Commit | Line | Data |
---|---|---|
c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
32d0add0 | 3 | Copyright (C) 1994-2015 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" |
53ce3c39 | 58 | #include <sys/stat.h> |
96d19272 | 59 | #include "completer.h" |
34eaf542 | 60 | #include "vec.h" |
98bfdba5 | 61 | #include "c-lang.h" |
a766d390 | 62 | #include "go-lang.h" |
98bfdba5 | 63 | #include "valprint.h" |
3019eac3 | 64 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 65 | #include "gdb/gdb-index.h" |
60d5a603 | 66 | #include <ctype.h> |
cbb099e8 | 67 | #include "gdb_bfd.h" |
4357ac6c | 68 | #include "f-lang.h" |
05cba821 | 69 | #include "source.h" |
614c279d | 70 | #include "filestuff.h" |
dc294be5 | 71 | #include "build-id.h" |
4c2df51b | 72 | |
c906108c | 73 | #include <fcntl.h> |
c906108c | 74 | #include <sys/types.h> |
d8151005 | 75 | |
34eaf542 TT |
76 | typedef struct symbol *symbolp; |
77 | DEF_VEC_P (symbolp); | |
78 | ||
73be47f5 DE |
79 | /* When == 1, print basic high level tracing messages. |
80 | When > 1, be more verbose. | |
45cfd468 | 81 | This is in contrast to the low level DIE reading of dwarf2_die_debug. */ |
73be47f5 | 82 | static unsigned int dwarf2_read_debug = 0; |
45cfd468 | 83 | |
d97bc12b | 84 | /* When non-zero, dump DIEs after they are read in. */ |
ccce17b0 | 85 | static unsigned int dwarf2_die_debug = 0; |
d97bc12b | 86 | |
900e11f9 JK |
87 | /* When non-zero, cross-check physname against demangler. */ |
88 | static int check_physname = 0; | |
89 | ||
481860b3 | 90 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 91 | static int use_deprecated_index_sections = 0; |
481860b3 | 92 | |
6502dd73 DJ |
93 | static const struct objfile_data *dwarf2_objfile_data_key; |
94 | ||
f1e6e072 TT |
95 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
96 | ||
97 | static int dwarf2_locexpr_index; | |
98 | static int dwarf2_loclist_index; | |
99 | static int dwarf2_locexpr_block_index; | |
100 | static int dwarf2_loclist_block_index; | |
101 | ||
73869dc2 DE |
102 | /* A descriptor for dwarf sections. |
103 | ||
104 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
105 | scanned. BUFFER, READIN are filled in later when the section is read. | |
106 | If the section contained compressed data then SIZE is updated to record | |
107 | the uncompressed size of the section. | |
108 | ||
109 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
110 | creating the concept of virtual sections contained within a real section. | |
111 | In DWP V2 the sections of the input DWO files are concatenated together | |
112 | into one section, but section offsets are kept relative to the original | |
113 | input section. | |
114 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
115 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
116 | describe the virtual section. */ | |
117 | ||
dce234bc PP |
118 | struct dwarf2_section_info |
119 | { | |
73869dc2 DE |
120 | union |
121 | { | |
e5aa3347 | 122 | /* If this is a real section, the bfd section. */ |
73869dc2 DE |
123 | asection *asection; |
124 | /* If this is a virtual section, pointer to the containing ("real") | |
e5aa3347 | 125 | section. */ |
73869dc2 DE |
126 | struct dwarf2_section_info *containing_section; |
127 | } s; | |
19ac8c2e | 128 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 129 | const gdb_byte *buffer; |
73869dc2 | 130 | /* The size of the section, real or virtual. */ |
dce234bc | 131 | bfd_size_type size; |
73869dc2 DE |
132 | /* If this is a virtual section, the offset in the real section. |
133 | Only valid if is_virtual. */ | |
134 | bfd_size_type virtual_offset; | |
be391dca | 135 | /* True if we have tried to read this section. */ |
73869dc2 DE |
136 | char readin; |
137 | /* True if this is a virtual section, False otherwise. | |
138 | This specifies which of s.asection and s.containing_section to use. */ | |
139 | char is_virtual; | |
dce234bc PP |
140 | }; |
141 | ||
8b70b953 TT |
142 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
143 | DEF_VEC_O (dwarf2_section_info_def); | |
144 | ||
9291a0cd TT |
145 | /* All offsets in the index are of this type. It must be |
146 | architecture-independent. */ | |
147 | typedef uint32_t offset_type; | |
148 | ||
149 | DEF_VEC_I (offset_type); | |
150 | ||
156942c7 DE |
151 | /* Ensure only legit values are used. */ |
152 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
153 | do { \ | |
154 | gdb_assert ((unsigned int) (value) <= 1); \ | |
155 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
156 | } while (0) | |
157 | ||
158 | /* Ensure only legit values are used. */ | |
159 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
160 | do { \ | |
161 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
162 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
163 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
164 | } while (0) | |
165 | ||
166 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
167 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
168 | do { \ | |
169 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
170 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
171 | } while (0) | |
172 | ||
9291a0cd TT |
173 | /* A description of the mapped index. The file format is described in |
174 | a comment by the code that writes the index. */ | |
175 | struct mapped_index | |
176 | { | |
559a7a62 JK |
177 | /* Index data format version. */ |
178 | int version; | |
179 | ||
9291a0cd TT |
180 | /* The total length of the buffer. */ |
181 | off_t total_size; | |
b11b1f88 | 182 | |
9291a0cd TT |
183 | /* A pointer to the address table data. */ |
184 | const gdb_byte *address_table; | |
b11b1f88 | 185 | |
9291a0cd TT |
186 | /* Size of the address table data in bytes. */ |
187 | offset_type address_table_size; | |
b11b1f88 | 188 | |
3876f04e DE |
189 | /* The symbol table, implemented as a hash table. */ |
190 | const offset_type *symbol_table; | |
b11b1f88 | 191 | |
9291a0cd | 192 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 193 | offset_type symbol_table_slots; |
b11b1f88 | 194 | |
9291a0cd TT |
195 | /* A pointer to the constant pool. */ |
196 | const char *constant_pool; | |
197 | }; | |
198 | ||
95554aad TT |
199 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
200 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
201 | ||
52059ffd TT |
202 | struct tu_stats |
203 | { | |
204 | int nr_uniq_abbrev_tables; | |
205 | int nr_symtabs; | |
206 | int nr_symtab_sharers; | |
207 | int nr_stmt_less_type_units; | |
208 | int nr_all_type_units_reallocs; | |
209 | }; | |
210 | ||
9cdd5dbd DE |
211 | /* Collection of data recorded per objfile. |
212 | This hangs off of dwarf2_objfile_data_key. */ | |
213 | ||
6502dd73 DJ |
214 | struct dwarf2_per_objfile |
215 | { | |
dce234bc PP |
216 | struct dwarf2_section_info info; |
217 | struct dwarf2_section_info abbrev; | |
218 | struct dwarf2_section_info line; | |
dce234bc PP |
219 | struct dwarf2_section_info loc; |
220 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 221 | struct dwarf2_section_info macro; |
dce234bc PP |
222 | struct dwarf2_section_info str; |
223 | struct dwarf2_section_info ranges; | |
3019eac3 | 224 | struct dwarf2_section_info addr; |
dce234bc PP |
225 | struct dwarf2_section_info frame; |
226 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 227 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 228 | |
8b70b953 TT |
229 | VEC (dwarf2_section_info_def) *types; |
230 | ||
be391dca TT |
231 | /* Back link. */ |
232 | struct objfile *objfile; | |
233 | ||
d467dd73 | 234 | /* Table of all the compilation units. This is used to locate |
10b3939b | 235 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
236 | struct dwarf2_per_cu_data **all_comp_units; |
237 | ||
238 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
239 | int n_comp_units; | |
240 | ||
1fd400ff | 241 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 242 | int n_type_units; |
1fd400ff | 243 | |
6aa5f3a6 DE |
244 | /* The number of elements allocated in all_type_units. |
245 | If there are skeleton-less TUs, we add them to all_type_units lazily. */ | |
246 | int n_allocated_type_units; | |
247 | ||
a2ce51a0 DE |
248 | /* The .debug_types-related CUs (TUs). |
249 | This is stored in malloc space because we may realloc it. */ | |
b4dd5633 | 250 | struct signatured_type **all_type_units; |
1fd400ff | 251 | |
f4dc4d17 DE |
252 | /* Table of struct type_unit_group objects. |
253 | The hash key is the DW_AT_stmt_list value. */ | |
254 | htab_t type_unit_groups; | |
72dca2f5 | 255 | |
348e048f DE |
256 | /* A table mapping .debug_types signatures to its signatured_type entry. |
257 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
258 | htab_t signatured_types; | |
259 | ||
f4dc4d17 DE |
260 | /* Type unit statistics, to see how well the scaling improvements |
261 | are doing. */ | |
52059ffd | 262 | struct tu_stats tu_stats; |
f4dc4d17 DE |
263 | |
264 | /* A chain of compilation units that are currently read in, so that | |
265 | they can be freed later. */ | |
266 | struct dwarf2_per_cu_data *read_in_chain; | |
267 | ||
3019eac3 DE |
268 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
269 | This is NULL if the table hasn't been allocated yet. */ | |
270 | htab_t dwo_files; | |
271 | ||
80626a55 DE |
272 | /* Non-zero if we've check for whether there is a DWP file. */ |
273 | int dwp_checked; | |
274 | ||
275 | /* The DWP file if there is one, or NULL. */ | |
276 | struct dwp_file *dwp_file; | |
277 | ||
36586728 TT |
278 | /* The shared '.dwz' file, if one exists. This is used when the |
279 | original data was compressed using 'dwz -m'. */ | |
280 | struct dwz_file *dwz_file; | |
281 | ||
72dca2f5 FR |
282 | /* A flag indicating wether this objfile has a section loaded at a |
283 | VMA of 0. */ | |
284 | int has_section_at_zero; | |
9291a0cd | 285 | |
ae2de4f8 DE |
286 | /* True if we are using the mapped index, |
287 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
288 | unsigned char using_index; |
289 | ||
ae2de4f8 | 290 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 291 | struct mapped_index *index_table; |
98bfdba5 | 292 | |
7b9f3c50 | 293 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
294 | TUs typically share line table entries with a CU, so we maintain a |
295 | separate table of all line table entries to support the sharing. | |
296 | Note that while there can be way more TUs than CUs, we've already | |
297 | sorted all the TUs into "type unit groups", grouped by their | |
298 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
299 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
300 | htab_t quick_file_names_table; |
301 | ||
98bfdba5 PA |
302 | /* Set during partial symbol reading, to prevent queueing of full |
303 | symbols. */ | |
304 | int reading_partial_symbols; | |
673bfd45 | 305 | |
dee91e82 | 306 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 307 | This is NULL if not allocated yet. |
02142a6c | 308 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
dee91e82 | 309 | htab_t die_type_hash; |
95554aad TT |
310 | |
311 | /* The CUs we recently read. */ | |
312 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
527f3840 JK |
313 | |
314 | /* Table containing line_header indexed by offset and offset_in_dwz. */ | |
315 | htab_t line_header_hash; | |
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). | |
1dbab08b | 516 | Note this value comes from the Fission stub CU/TU's DIE. */ |
3019eac3 DE |
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). | |
1dbab08b | 521 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 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 | ||
fffbe6a8 YQ |
618 | /* When dwarf2_per_objfile->using_index is true, the 'quick' field |
619 | is active. Otherwise, the 'psymtab' field is active. */ | |
9291a0cd TT |
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 | 722 | |
43f3e411 | 723 | /* The compunit symtab. |
094b34ac | 724 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
725 | so we create an essentially anonymous symtab as the compunit symtab. */ |
726 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 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 | ||
52059ffd TT |
1027 | struct file_entry |
1028 | { | |
1029 | const char *name; | |
1030 | unsigned int dir_index; | |
1031 | unsigned int mod_time; | |
1032 | unsigned int length; | |
1033 | int included_p; /* Non-zero if referenced by the Line Number Program. */ | |
1034 | struct symtab *symtab; /* The associated symbol table, if any. */ | |
1035 | }; | |
1036 | ||
debd256d JB |
1037 | /* The line number information for a compilation unit (found in the |
1038 | .debug_line section) begins with a "statement program header", | |
1039 | which contains the following information. */ | |
1040 | struct line_header | |
1041 | { | |
527f3840 JK |
1042 | /* Offset of line number information in .debug_line section. */ |
1043 | sect_offset offset; | |
1044 | ||
1045 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
1046 | unsigned offset_in_dwz : 1; | |
1047 | ||
debd256d JB |
1048 | unsigned int total_length; |
1049 | unsigned short version; | |
1050 | unsigned int header_length; | |
1051 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 1052 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
1053 | unsigned char default_is_stmt; |
1054 | int line_base; | |
1055 | unsigned char line_range; | |
1056 | unsigned char opcode_base; | |
1057 | ||
1058 | /* standard_opcode_lengths[i] is the number of operands for the | |
1059 | standard opcode whose value is i. This means that | |
1060 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1061 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
1062 | unsigned char *standard_opcode_lengths; | |
1063 | ||
1064 | /* The include_directories table. NOTE! These strings are not | |
1065 | allocated with xmalloc; instead, they are pointers into | |
1066 | debug_line_buffer. If you try to free them, `free' will get | |
1067 | indigestion. */ | |
1068 | unsigned int num_include_dirs, include_dirs_size; | |
d521ce57 | 1069 | const char **include_dirs; |
debd256d JB |
1070 | |
1071 | /* The file_names table. NOTE! These strings are not allocated | |
1072 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
1073 | Don't try to free them directly. */ | |
1074 | unsigned int num_file_names, file_names_size; | |
52059ffd | 1075 | struct file_entry *file_names; |
debd256d JB |
1076 | |
1077 | /* The start and end of the statement program following this | |
6502dd73 | 1078 | header. These point into dwarf2_per_objfile->line_buffer. */ |
d521ce57 | 1079 | const gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 1080 | }; |
c906108c SS |
1081 | |
1082 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 1083 | need this much information. */ |
c906108c SS |
1084 | struct partial_die_info |
1085 | { | |
72bf9492 | 1086 | /* Offset of this DIE. */ |
b64f50a1 | 1087 | sect_offset offset; |
72bf9492 DJ |
1088 | |
1089 | /* DWARF-2 tag for this DIE. */ | |
1090 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1091 | ||
72bf9492 DJ |
1092 | /* Assorted flags describing the data found in this DIE. */ |
1093 | unsigned int has_children : 1; | |
1094 | unsigned int is_external : 1; | |
1095 | unsigned int is_declaration : 1; | |
1096 | unsigned int has_type : 1; | |
1097 | unsigned int has_specification : 1; | |
1098 | unsigned int has_pc_info : 1; | |
481860b3 | 1099 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
1100 | |
1101 | /* Flag set if the SCOPE field of this structure has been | |
1102 | computed. */ | |
1103 | unsigned int scope_set : 1; | |
1104 | ||
fa4028e9 JB |
1105 | /* Flag set if the DIE has a byte_size attribute. */ |
1106 | unsigned int has_byte_size : 1; | |
1107 | ||
ff908ebf AW |
1108 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1109 | unsigned int has_const_value : 1; | |
1110 | ||
98bfdba5 PA |
1111 | /* Flag set if any of the DIE's children are template arguments. */ |
1112 | unsigned int has_template_arguments : 1; | |
1113 | ||
abc72ce4 DE |
1114 | /* Flag set if fixup_partial_die has been called on this die. */ |
1115 | unsigned int fixup_called : 1; | |
1116 | ||
36586728 TT |
1117 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1118 | unsigned int is_dwz : 1; | |
1119 | ||
1120 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1121 | unsigned int spec_is_dwz : 1; | |
1122 | ||
72bf9492 | 1123 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1124 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1125 | const char *name; |
72bf9492 | 1126 | |
abc72ce4 DE |
1127 | /* The linkage name, if present. */ |
1128 | const char *linkage_name; | |
1129 | ||
72bf9492 DJ |
1130 | /* The scope to prepend to our children. This is generally |
1131 | allocated on the comp_unit_obstack, so will disappear | |
1132 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1133 | const char *scope; |
72bf9492 | 1134 | |
95554aad TT |
1135 | /* Some data associated with the partial DIE. The tag determines |
1136 | which field is live. */ | |
1137 | union | |
1138 | { | |
1139 | /* The location description associated with this DIE, if any. */ | |
1140 | struct dwarf_block *locdesc; | |
1141 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
1142 | sect_offset offset; | |
1143 | } d; | |
72bf9492 DJ |
1144 | |
1145 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1146 | CORE_ADDR lowpc; |
1147 | CORE_ADDR highpc; | |
72bf9492 | 1148 | |
93311388 | 1149 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1150 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1151 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1152 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1153 | const gdb_byte *sibling; |
72bf9492 DJ |
1154 | |
1155 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1156 | DW_AT_specification (or DW_AT_abstract_origin or | |
1157 | DW_AT_extension). */ | |
b64f50a1 | 1158 | sect_offset spec_offset; |
72bf9492 DJ |
1159 | |
1160 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1161 | if any. */ | |
1162 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1163 | }; |
1164 | ||
0963b4bd | 1165 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1166 | struct abbrev_info |
1167 | { | |
1168 | unsigned int number; /* number identifying abbrev */ | |
1169 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1170 | unsigned short has_children; /* boolean */ |
1171 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1172 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1173 | struct abbrev_info *next; /* next in chain */ | |
1174 | }; | |
1175 | ||
1176 | struct attr_abbrev | |
1177 | { | |
9d25dd43 DE |
1178 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1179 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
1180 | }; |
1181 | ||
433df2d4 DE |
1182 | /* Size of abbrev_table.abbrev_hash_table. */ |
1183 | #define ABBREV_HASH_SIZE 121 | |
1184 | ||
1185 | /* Top level data structure to contain an abbreviation table. */ | |
1186 | ||
1187 | struct abbrev_table | |
1188 | { | |
f4dc4d17 DE |
1189 | /* Where the abbrev table came from. |
1190 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1191 | sect_offset offset; |
1192 | ||
1193 | /* Storage for the abbrev table. */ | |
1194 | struct obstack abbrev_obstack; | |
1195 | ||
1196 | /* Hash table of abbrevs. | |
1197 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1198 | It could be statically allocated, but the previous code didn't so we | |
1199 | don't either. */ | |
1200 | struct abbrev_info **abbrevs; | |
1201 | }; | |
1202 | ||
0963b4bd | 1203 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1204 | struct attribute |
1205 | { | |
9d25dd43 | 1206 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1207 | ENUM_BITFIELD(dwarf_form) form : 15; |
1208 | ||
1209 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1210 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1211 | here for better struct attribute alignment. */ | |
1212 | unsigned int string_is_canonical : 1; | |
1213 | ||
b60c80d6 DJ |
1214 | union |
1215 | { | |
15d034d0 | 1216 | const char *str; |
b60c80d6 | 1217 | struct dwarf_block *blk; |
43bbcdc2 PH |
1218 | ULONGEST unsnd; |
1219 | LONGEST snd; | |
b60c80d6 | 1220 | CORE_ADDR addr; |
ac9ec31b | 1221 | ULONGEST signature; |
b60c80d6 DJ |
1222 | } |
1223 | u; | |
1224 | }; | |
1225 | ||
0963b4bd | 1226 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1227 | struct die_info |
1228 | { | |
76815b17 DE |
1229 | /* DWARF-2 tag for this DIE. */ |
1230 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1231 | ||
1232 | /* Number of attributes */ | |
98bfdba5 PA |
1233 | unsigned char num_attrs; |
1234 | ||
1235 | /* True if we're presently building the full type name for the | |
1236 | type derived from this DIE. */ | |
1237 | unsigned char building_fullname : 1; | |
76815b17 | 1238 | |
adde2bff DE |
1239 | /* True if this die is in process. PR 16581. */ |
1240 | unsigned char in_process : 1; | |
1241 | ||
76815b17 DE |
1242 | /* Abbrev number */ |
1243 | unsigned int abbrev; | |
1244 | ||
93311388 | 1245 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1246 | sect_offset offset; |
78ba4af6 JB |
1247 | |
1248 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1249 | points to this die's parent; CHILD points to the first child of | |
1250 | this node; and all the children of a given node are chained | |
4950bc1c | 1251 | together via their SIBLING fields. */ |
639d11d3 DC |
1252 | struct die_info *child; /* Its first child, if any. */ |
1253 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1254 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1255 | |
b60c80d6 DJ |
1256 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1257 | zero, but it's not common and zero-sized arrays are not | |
1258 | sufficiently portable C. */ | |
1259 | struct attribute attrs[1]; | |
c906108c SS |
1260 | }; |
1261 | ||
0963b4bd | 1262 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1263 | |
1264 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1265 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1266 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1267 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1268 | #define DW_SND(attr) ((attr)->u.snd) | |
1269 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1270 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1271 | |
0963b4bd | 1272 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1273 | struct dwarf_block |
1274 | { | |
56eb65bd | 1275 | size_t size; |
1d6edc3c JK |
1276 | |
1277 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1278 | const gdb_byte *data; |
c906108c SS |
1279 | }; |
1280 | ||
c906108c SS |
1281 | #ifndef ATTR_ALLOC_CHUNK |
1282 | #define ATTR_ALLOC_CHUNK 4 | |
1283 | #endif | |
1284 | ||
c906108c SS |
1285 | /* Allocate fields for structs, unions and enums in this size. */ |
1286 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1287 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1288 | #endif | |
1289 | ||
c906108c SS |
1290 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1291 | but this would require a corresponding change in unpack_field_as_long | |
1292 | and friends. */ | |
1293 | static int bits_per_byte = 8; | |
1294 | ||
52059ffd TT |
1295 | struct nextfield |
1296 | { | |
1297 | struct nextfield *next; | |
1298 | int accessibility; | |
1299 | int virtuality; | |
1300 | struct field field; | |
1301 | }; | |
1302 | ||
1303 | struct nextfnfield | |
1304 | { | |
1305 | struct nextfnfield *next; | |
1306 | struct fn_field fnfield; | |
1307 | }; | |
1308 | ||
1309 | struct fnfieldlist | |
1310 | { | |
1311 | const char *name; | |
1312 | int length; | |
1313 | struct nextfnfield *head; | |
1314 | }; | |
1315 | ||
1316 | struct typedef_field_list | |
1317 | { | |
1318 | struct typedef_field field; | |
1319 | struct typedef_field_list *next; | |
1320 | }; | |
1321 | ||
c906108c SS |
1322 | /* The routines that read and process dies for a C struct or C++ class |
1323 | pass lists of data member fields and lists of member function fields | |
1324 | in an instance of a field_info structure, as defined below. */ | |
1325 | struct field_info | |
c5aa993b | 1326 | { |
0963b4bd | 1327 | /* List of data member and baseclasses fields. */ |
52059ffd | 1328 | struct nextfield *fields, *baseclasses; |
c906108c | 1329 | |
7d0ccb61 | 1330 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1331 | int nfields; |
c906108c | 1332 | |
c5aa993b JM |
1333 | /* Number of baseclasses. */ |
1334 | int nbaseclasses; | |
c906108c | 1335 | |
c5aa993b JM |
1336 | /* Set if the accesibility of one of the fields is not public. */ |
1337 | int non_public_fields; | |
c906108c | 1338 | |
c5aa993b JM |
1339 | /* Member function fields array, entries are allocated in the order they |
1340 | are encountered in the object file. */ | |
52059ffd | 1341 | struct nextfnfield *fnfields; |
c906108c | 1342 | |
c5aa993b JM |
1343 | /* Member function fieldlist array, contains name of possibly overloaded |
1344 | member function, number of overloaded member functions and a pointer | |
1345 | to the head of the member function field chain. */ | |
52059ffd | 1346 | struct fnfieldlist *fnfieldlists; |
c906108c | 1347 | |
c5aa993b JM |
1348 | /* Number of entries in the fnfieldlists array. */ |
1349 | int nfnfields; | |
98751a41 JK |
1350 | |
1351 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1352 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
52059ffd | 1353 | struct typedef_field_list *typedef_field_list; |
98751a41 | 1354 | unsigned typedef_field_list_count; |
c5aa993b | 1355 | }; |
c906108c | 1356 | |
10b3939b DJ |
1357 | /* One item on the queue of compilation units to read in full symbols |
1358 | for. */ | |
1359 | struct dwarf2_queue_item | |
1360 | { | |
1361 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1362 | enum language pretend_language; |
10b3939b DJ |
1363 | struct dwarf2_queue_item *next; |
1364 | }; | |
1365 | ||
1366 | /* The current queue. */ | |
1367 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1368 | ||
ae038cb0 DJ |
1369 | /* Loaded secondary compilation units are kept in memory until they |
1370 | have not been referenced for the processing of this many | |
1371 | compilation units. Set this to zero to disable caching. Cache | |
1372 | sizes of up to at least twenty will improve startup time for | |
1373 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
1374 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
1375 | static void |
1376 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
1377 | struct cmd_list_element *c, const char *value) | |
1378 | { | |
3e43a32a MS |
1379 | fprintf_filtered (file, _("The upper bound on the age of cached " |
1380 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
1381 | value); |
1382 | } | |
4390d890 | 1383 | \f |
c906108c SS |
1384 | /* local function prototypes */ |
1385 | ||
a32a8923 DE |
1386 | static const char *get_section_name (const struct dwarf2_section_info *); |
1387 | ||
1388 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1389 | ||
4efb68b1 | 1390 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1391 | |
918dd910 JK |
1392 | static void dwarf2_find_base_address (struct die_info *die, |
1393 | struct dwarf2_cu *cu); | |
1394 | ||
0018ea6f DE |
1395 | static struct partial_symtab *create_partial_symtab |
1396 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1397 | ||
c67a9c90 | 1398 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1399 | |
72bf9492 DJ |
1400 | static void scan_partial_symbols (struct partial_die_info *, |
1401 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1402 | int, struct dwarf2_cu *); |
c906108c | 1403 | |
72bf9492 DJ |
1404 | static void add_partial_symbol (struct partial_die_info *, |
1405 | struct dwarf2_cu *); | |
63d06c5c | 1406 | |
72bf9492 DJ |
1407 | static void add_partial_namespace (struct partial_die_info *pdi, |
1408 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1409 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1410 | |
5d7cb8df | 1411 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1412 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1413 | struct dwarf2_cu *cu); |
1414 | ||
72bf9492 DJ |
1415 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1416 | struct dwarf2_cu *cu); | |
91c24f0a | 1417 | |
bc30ff58 JB |
1418 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1419 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1420 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1421 | |
257e7a09 YQ |
1422 | static void dwarf2_read_symtab (struct partial_symtab *, |
1423 | struct objfile *); | |
c906108c | 1424 | |
a14ed312 | 1425 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1426 | |
433df2d4 DE |
1427 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1428 | (const struct abbrev_table *, unsigned int); | |
1429 | ||
1430 | static struct abbrev_table *abbrev_table_read_table | |
1431 | (struct dwarf2_section_info *, sect_offset); | |
1432 | ||
1433 | static void abbrev_table_free (struct abbrev_table *); | |
1434 | ||
f4dc4d17 DE |
1435 | static void abbrev_table_free_cleanup (void *); |
1436 | ||
dee91e82 DE |
1437 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1438 | struct dwarf2_section_info *); | |
c906108c | 1439 | |
f3dd6933 | 1440 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1441 | |
d521ce57 | 1442 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1443 | |
dee91e82 | 1444 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1445 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1446 | |
d521ce57 TT |
1447 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1448 | struct partial_die_info *, | |
1449 | struct abbrev_info *, | |
1450 | unsigned int, | |
1451 | const gdb_byte *); | |
c906108c | 1452 | |
36586728 | 1453 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1454 | struct dwarf2_cu *); |
72bf9492 DJ |
1455 | |
1456 | static void fixup_partial_die (struct partial_die_info *, | |
1457 | struct dwarf2_cu *); | |
1458 | ||
d521ce57 TT |
1459 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1460 | struct attribute *, struct attr_abbrev *, | |
1461 | const gdb_byte *); | |
a8329558 | 1462 | |
a1855c1d | 1463 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1464 | |
a1855c1d | 1465 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1466 | |
a1855c1d | 1467 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1468 | |
a1855c1d | 1469 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1470 | |
a1855c1d | 1471 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1472 | |
d521ce57 | 1473 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1474 | unsigned int *); |
c906108c | 1475 | |
d521ce57 | 1476 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1477 | |
1478 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1479 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1480 | unsigned int *, unsigned int *); |
613e1657 | 1481 | |
d521ce57 TT |
1482 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1483 | const struct comp_unit_head *, | |
c764a876 DE |
1484 | unsigned int *); |
1485 | ||
d521ce57 | 1486 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1487 | |
f4dc4d17 DE |
1488 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1489 | sect_offset); | |
1490 | ||
d521ce57 | 1491 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1492 | |
d521ce57 | 1493 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1494 | |
d521ce57 TT |
1495 | static const char *read_indirect_string (bfd *, const gdb_byte *, |
1496 | const struct comp_unit_head *, | |
1497 | unsigned int *); | |
4bdf3d34 | 1498 | |
d521ce57 | 1499 | static const char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
36586728 | 1500 | |
d521ce57 | 1501 | static ULONGEST read_unsigned_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1502 | |
d521ce57 | 1503 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1504 | |
d521ce57 TT |
1505 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1506 | const gdb_byte *, | |
3019eac3 DE |
1507 | unsigned int *); |
1508 | ||
d521ce57 | 1509 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1510 | ULONGEST str_index); |
3019eac3 | 1511 | |
e142c38c | 1512 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1513 | |
e142c38c DJ |
1514 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1515 | struct dwarf2_cu *); | |
c906108c | 1516 | |
348e048f | 1517 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1518 | unsigned int); |
348e048f | 1519 | |
05cf31d1 JB |
1520 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1521 | struct dwarf2_cu *cu); | |
1522 | ||
e142c38c | 1523 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1524 | |
e142c38c | 1525 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1526 | struct dwarf2_cu **); |
63d06c5c | 1527 | |
debd256d JB |
1528 | static void free_line_header (struct line_header *lh); |
1529 | ||
3019eac3 DE |
1530 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1531 | struct dwarf2_cu *cu); | |
debd256d | 1532 | |
f3f5162e | 1533 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1534 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1535 | CORE_ADDR, int decode_mapping); |
c906108c | 1536 | |
4d663531 | 1537 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1538 | |
43f3e411 DE |
1539 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1540 | const char *, const char *, | |
1541 | CORE_ADDR); | |
f4dc4d17 | 1542 | |
a14ed312 | 1543 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1544 | struct dwarf2_cu *); |
c906108c | 1545 | |
34eaf542 TT |
1546 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1547 | struct dwarf2_cu *, struct symbol *); | |
1548 | ||
ff39bb5e | 1549 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1550 | struct dwarf2_cu *); |
c906108c | 1551 | |
ff39bb5e | 1552 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1553 | struct type *type, |
1554 | const char *name, | |
1555 | struct obstack *obstack, | |
12df843f | 1556 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1557 | const gdb_byte **bytes, |
98bfdba5 | 1558 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1559 | |
e7c27a73 | 1560 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1561 | |
b4ba55a1 JB |
1562 | static int need_gnat_info (struct dwarf2_cu *); |
1563 | ||
3e43a32a MS |
1564 | static struct type *die_descriptive_type (struct die_info *, |
1565 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1566 | |
1567 | static void set_descriptive_type (struct type *, struct die_info *, | |
1568 | struct dwarf2_cu *); | |
1569 | ||
e7c27a73 DJ |
1570 | static struct type *die_containing_type (struct die_info *, |
1571 | struct dwarf2_cu *); | |
c906108c | 1572 | |
ff39bb5e | 1573 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1574 | struct dwarf2_cu *); |
c906108c | 1575 | |
f792889a | 1576 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1577 | |
673bfd45 DE |
1578 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1579 | ||
0d5cff50 | 1580 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1581 | |
6e70227d | 1582 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1583 | const char *suffix, int physname, |
1584 | struct dwarf2_cu *cu); | |
63d06c5c | 1585 | |
e7c27a73 | 1586 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1587 | |
348e048f DE |
1588 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1589 | ||
e7c27a73 | 1590 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1591 | |
e7c27a73 | 1592 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1593 | |
96408a79 SA |
1594 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1595 | ||
ff013f42 JK |
1596 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1597 | struct dwarf2_cu *, struct partial_symtab *); | |
1598 | ||
a14ed312 | 1599 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1600 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1601 | struct partial_symtab *); | |
c906108c | 1602 | |
fae299cd DC |
1603 | static void get_scope_pc_bounds (struct die_info *, |
1604 | CORE_ADDR *, CORE_ADDR *, | |
1605 | struct dwarf2_cu *); | |
1606 | ||
801e3a5b JB |
1607 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1608 | CORE_ADDR, struct dwarf2_cu *); | |
1609 | ||
a14ed312 | 1610 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1611 | struct dwarf2_cu *); |
c906108c | 1612 | |
a14ed312 | 1613 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1614 | struct type *, struct dwarf2_cu *); |
c906108c | 1615 | |
a14ed312 | 1616 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1617 | struct die_info *, struct type *, |
e7c27a73 | 1618 | struct dwarf2_cu *); |
c906108c | 1619 | |
a14ed312 | 1620 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1621 | struct type *, |
1622 | struct dwarf2_cu *); | |
c906108c | 1623 | |
134d01f1 | 1624 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1625 | |
e7c27a73 | 1626 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1627 | |
e7c27a73 | 1628 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1629 | |
5d7cb8df JK |
1630 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1631 | ||
27aa8d6a SW |
1632 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1633 | ||
74921315 KS |
1634 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1635 | ||
f55ee35c JK |
1636 | static struct type *read_module_type (struct die_info *die, |
1637 | struct dwarf2_cu *cu); | |
1638 | ||
38d518c9 | 1639 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1640 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1641 | |
134d01f1 | 1642 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1643 | |
e7c27a73 | 1644 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1645 | |
6e70227d | 1646 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1647 | struct dwarf2_cu *); |
1648 | ||
bf6af496 | 1649 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1650 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1651 | struct die_info *); |
639d11d3 | 1652 | |
dee91e82 | 1653 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1654 | const gdb_byte *info_ptr, |
1655 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1656 | struct die_info *parent); |
1657 | ||
d521ce57 TT |
1658 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1659 | struct die_info **, const gdb_byte *, | |
1660 | int *, int); | |
3019eac3 | 1661 | |
d521ce57 TT |
1662 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1663 | struct die_info **, const gdb_byte *, | |
1664 | int *); | |
93311388 | 1665 | |
e7c27a73 | 1666 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1667 | |
15d034d0 TT |
1668 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1669 | struct obstack *); | |
71c25dea | 1670 | |
15d034d0 | 1671 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1672 | |
15d034d0 | 1673 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1674 | struct die_info *die, |
1675 | struct dwarf2_cu *cu); | |
1676 | ||
ca69b9e6 DE |
1677 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1678 | struct dwarf2_cu *cu); | |
1679 | ||
e142c38c | 1680 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1681 | struct dwarf2_cu **); |
9219021c | 1682 | |
f39c6ffd | 1683 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1684 | |
f39c6ffd | 1685 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1686 | |
f39c6ffd | 1687 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1688 | |
a14ed312 | 1689 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1690 | |
f39c6ffd | 1691 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1692 | |
f9aca02d | 1693 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1694 | |
d97bc12b DE |
1695 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1696 | ||
1697 | static void dump_die_for_error (struct die_info *); | |
1698 | ||
1699 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1700 | struct die_info *); | |
c906108c | 1701 | |
d97bc12b | 1702 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1703 | |
51545339 | 1704 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1705 | struct dwarf2_cu *); |
c906108c | 1706 | |
ff39bb5e | 1707 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1708 | |
ff39bb5e | 1709 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1710 | |
348e048f | 1711 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1712 | const struct attribute *, |
348e048f DE |
1713 | struct dwarf2_cu **); |
1714 | ||
10b3939b | 1715 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1716 | const struct attribute *, |
f2f0e013 | 1717 | struct dwarf2_cu **); |
c906108c | 1718 | |
348e048f | 1719 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1720 | const struct attribute *, |
348e048f DE |
1721 | struct dwarf2_cu **); |
1722 | ||
ac9ec31b DE |
1723 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1724 | struct dwarf2_cu *); | |
1725 | ||
1726 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1727 | const struct attribute *, |
ac9ec31b DE |
1728 | struct dwarf2_cu *); |
1729 | ||
e5fe5e75 | 1730 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1731 | |
52dc124a | 1732 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1733 | |
c906108c SS |
1734 | /* memory allocation interface */ |
1735 | ||
7b5a2f43 | 1736 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1737 | |
b60c80d6 | 1738 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1739 | |
43f3e411 | 1740 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1741 | |
6e5a29e1 | 1742 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1743 | |
6e5a29e1 | 1744 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1745 | |
6e5a29e1 | 1746 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1747 | |
6e5a29e1 | 1748 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1749 | |
8cf6f0b1 TT |
1750 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1751 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1752 | const struct attribute *attr); |
8cf6f0b1 | 1753 | |
ff39bb5e | 1754 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1755 | struct symbol *sym, |
f1e6e072 TT |
1756 | struct dwarf2_cu *cu, |
1757 | int is_block); | |
4c2df51b | 1758 | |
d521ce57 TT |
1759 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1760 | const gdb_byte *info_ptr, | |
1761 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1762 | |
72bf9492 DJ |
1763 | static void free_stack_comp_unit (void *); |
1764 | ||
72bf9492 DJ |
1765 | static hashval_t partial_die_hash (const void *item); |
1766 | ||
1767 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1768 | ||
ae038cb0 | 1769 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1770 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1771 | |
9816fde3 | 1772 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1773 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1774 | |
1775 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1776 | struct die_info *comp_unit_die, |
1777 | enum language pretend_language); | |
93311388 | 1778 | |
68dc6402 | 1779 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1780 | |
1781 | static void free_cached_comp_units (void *); | |
1782 | ||
1783 | static void age_cached_comp_units (void); | |
1784 | ||
dee91e82 | 1785 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1786 | |
f792889a DJ |
1787 | static struct type *set_die_type (struct die_info *, struct type *, |
1788 | struct dwarf2_cu *); | |
1c379e20 | 1789 | |
ae038cb0 DJ |
1790 | static void create_all_comp_units (struct objfile *); |
1791 | ||
0e50663e | 1792 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1793 | |
95554aad TT |
1794 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1795 | enum language); | |
10b3939b | 1796 | |
95554aad TT |
1797 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1798 | enum language); | |
10b3939b | 1799 | |
f4dc4d17 DE |
1800 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1801 | enum language); | |
1802 | ||
10b3939b DJ |
1803 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1804 | struct dwarf2_per_cu_data *); | |
1805 | ||
ae038cb0 DJ |
1806 | static void dwarf2_mark (struct dwarf2_cu *); |
1807 | ||
1808 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1809 | ||
b64f50a1 | 1810 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1811 | struct dwarf2_per_cu_data *); |
673bfd45 | 1812 | |
f792889a | 1813 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1814 | |
9291a0cd TT |
1815 | static void dwarf2_release_queue (void *dummy); |
1816 | ||
95554aad TT |
1817 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1818 | enum language pretend_language); | |
1819 | ||
a0f42c21 | 1820 | static void process_queue (void); |
9291a0cd TT |
1821 | |
1822 | static void find_file_and_directory (struct die_info *die, | |
1823 | struct dwarf2_cu *cu, | |
15d034d0 | 1824 | const char **name, const char **comp_dir); |
9291a0cd TT |
1825 | |
1826 | static char *file_full_name (int file, struct line_header *lh, | |
1827 | const char *comp_dir); | |
1828 | ||
d521ce57 | 1829 | static const gdb_byte *read_and_check_comp_unit_head |
36586728 TT |
1830 | (struct comp_unit_head *header, |
1831 | struct dwarf2_section_info *section, | |
d521ce57 | 1832 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
36586728 TT |
1833 | int is_debug_types_section); |
1834 | ||
fd820528 | 1835 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1836 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1837 | int use_existing_cu, int keep, | |
3019eac3 DE |
1838 | die_reader_func_ftype *die_reader_func, void *data); |
1839 | ||
dee91e82 DE |
1840 | static void init_cutu_and_read_dies_simple |
1841 | (struct dwarf2_per_cu_data *this_cu, | |
1842 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1843 | |
673bfd45 | 1844 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1845 | |
3019eac3 DE |
1846 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1847 | ||
57d63ce2 DE |
1848 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
1849 | (struct dwp_file *dwp_file, const char *comp_dir, | |
1850 | ULONGEST signature, int is_debug_types); | |
a2ce51a0 DE |
1851 | |
1852 | static struct dwp_file *get_dwp_file (void); | |
1853 | ||
3019eac3 | 1854 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1855 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1856 | |
1857 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1858 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1859 | |
89e63ee4 DE |
1860 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1861 | ||
3019eac3 DE |
1862 | static void free_dwo_file_cleanup (void *); |
1863 | ||
95554aad TT |
1864 | static void process_cu_includes (void); |
1865 | ||
1b80a9fa | 1866 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1867 | |
1868 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1869 | \f |
1870 | /* Various complaints about symbol reading that don't abort the process. */ | |
1871 | ||
1872 | static void | |
1873 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1874 | { | |
1875 | complaint (&symfile_complaints, | |
1876 | _("statement list doesn't fit in .debug_line section")); | |
1877 | } | |
1878 | ||
1879 | static void | |
1880 | dwarf2_debug_line_missing_file_complaint (void) | |
1881 | { | |
1882 | complaint (&symfile_complaints, | |
1883 | _(".debug_line section has line data without a file")); | |
1884 | } | |
1885 | ||
1886 | static void | |
1887 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1888 | { | |
1889 | complaint (&symfile_complaints, | |
1890 | _(".debug_line section has line " | |
1891 | "program sequence without an end")); | |
1892 | } | |
1893 | ||
1894 | static void | |
1895 | dwarf2_complex_location_expr_complaint (void) | |
1896 | { | |
1897 | complaint (&symfile_complaints, _("location expression too complex")); | |
1898 | } | |
1899 | ||
1900 | static void | |
1901 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1902 | int arg3) | |
1903 | { | |
1904 | complaint (&symfile_complaints, | |
1905 | _("const value length mismatch for '%s', got %d, expected %d"), | |
1906 | arg1, arg2, arg3); | |
1907 | } | |
1908 | ||
1909 | static void | |
1910 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1911 | { | |
1912 | complaint (&symfile_complaints, | |
1913 | _("debug info runs off end of %s section" | |
1914 | " [in module %s]"), | |
a32a8923 DE |
1915 | get_section_name (section), |
1916 | get_section_file_name (section)); | |
4390d890 | 1917 | } |
1b80a9fa | 1918 | |
4390d890 DE |
1919 | static void |
1920 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1921 | { | |
1922 | complaint (&symfile_complaints, | |
1923 | _("macro debug info contains a " | |
1924 | "malformed macro definition:\n`%s'"), | |
1925 | arg1); | |
1926 | } | |
1927 | ||
1928 | static void | |
1929 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1930 | { | |
1931 | complaint (&symfile_complaints, | |
1932 | _("invalid attribute class or form for '%s' in '%s'"), | |
1933 | arg1, arg2); | |
1934 | } | |
527f3840 JK |
1935 | |
1936 | /* Hash function for line_header_hash. */ | |
1937 | ||
1938 | static hashval_t | |
1939 | line_header_hash (const struct line_header *ofs) | |
1940 | { | |
1941 | return ofs->offset.sect_off ^ ofs->offset_in_dwz; | |
1942 | } | |
1943 | ||
1944 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1945 | ||
1946 | static hashval_t | |
1947 | line_header_hash_voidp (const void *item) | |
1948 | { | |
1949 | const struct line_header *ofs = item; | |
1950 | ||
1951 | return line_header_hash (ofs); | |
1952 | } | |
1953 | ||
1954 | /* Equality function for line_header_hash. */ | |
1955 | ||
1956 | static int | |
1957 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1958 | { | |
1959 | const struct line_header *ofs_lhs = item_lhs; | |
1960 | const struct line_header *ofs_rhs = item_rhs; | |
1961 | ||
1962 | return (ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off | |
1963 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); | |
1964 | } | |
1965 | ||
4390d890 | 1966 | \f |
9291a0cd TT |
1967 | #if WORDS_BIGENDIAN |
1968 | ||
1969 | /* Convert VALUE between big- and little-endian. */ | |
1970 | static offset_type | |
1971 | byte_swap (offset_type value) | |
1972 | { | |
1973 | offset_type result; | |
1974 | ||
1975 | result = (value & 0xff) << 24; | |
1976 | result |= (value & 0xff00) << 8; | |
1977 | result |= (value & 0xff0000) >> 8; | |
1978 | result |= (value & 0xff000000) >> 24; | |
1979 | return result; | |
1980 | } | |
1981 | ||
1982 | #define MAYBE_SWAP(V) byte_swap (V) | |
1983 | ||
1984 | #else | |
1985 | #define MAYBE_SWAP(V) (V) | |
1986 | #endif /* WORDS_BIGENDIAN */ | |
1987 | ||
31aa7e4e JB |
1988 | /* Read the given attribute value as an address, taking the attribute's |
1989 | form into account. */ | |
1990 | ||
1991 | static CORE_ADDR | |
1992 | attr_value_as_address (struct attribute *attr) | |
1993 | { | |
1994 | CORE_ADDR addr; | |
1995 | ||
1996 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
1997 | { | |
1998 | /* Aside from a few clearly defined exceptions, attributes that | |
1999 | contain an address must always be in DW_FORM_addr form. | |
2000 | Unfortunately, some compilers happen to be violating this | |
2001 | requirement by encoding addresses using other forms, such | |
2002 | as DW_FORM_data4 for example. For those broken compilers, | |
2003 | we try to do our best, without any guarantee of success, | |
2004 | to interpret the address correctly. It would also be nice | |
2005 | to generate a complaint, but that would require us to maintain | |
2006 | a list of legitimate cases where a non-address form is allowed, | |
2007 | as well as update callers to pass in at least the CU's DWARF | |
2008 | version. This is more overhead than what we're willing to | |
2009 | expand for a pretty rare case. */ | |
2010 | addr = DW_UNSND (attr); | |
2011 | } | |
2012 | else | |
2013 | addr = DW_ADDR (attr); | |
2014 | ||
2015 | return addr; | |
2016 | } | |
2017 | ||
9291a0cd TT |
2018 | /* The suffix for an index file. */ |
2019 | #define INDEX_SUFFIX ".gdb-index" | |
2020 | ||
c906108c | 2021 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2022 | information and return true if we have enough to do something. |
2023 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2024 | ELF names are used. */ | |
c906108c SS |
2025 | |
2026 | int | |
251d32d9 TG |
2027 | dwarf2_has_info (struct objfile *objfile, |
2028 | const struct dwarf2_debug_sections *names) | |
c906108c | 2029 | { |
be391dca TT |
2030 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
2031 | if (!dwarf2_per_objfile) | |
2032 | { | |
2033 | /* Initialize per-objfile state. */ | |
2034 | struct dwarf2_per_objfile *data | |
2035 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 2036 | |
be391dca TT |
2037 | memset (data, 0, sizeof (*data)); |
2038 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
2039 | dwarf2_per_objfile = data; | |
6502dd73 | 2040 | |
251d32d9 TG |
2041 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
2042 | (void *) names); | |
be391dca TT |
2043 | dwarf2_per_objfile->objfile = objfile; |
2044 | } | |
73869dc2 DE |
2045 | return (!dwarf2_per_objfile->info.is_virtual |
2046 | && dwarf2_per_objfile->info.s.asection != NULL | |
2047 | && !dwarf2_per_objfile->abbrev.is_virtual | |
2048 | && dwarf2_per_objfile->abbrev.s.asection != NULL); | |
2049 | } | |
2050 | ||
2051 | /* Return the containing section of virtual section SECTION. */ | |
2052 | ||
2053 | static struct dwarf2_section_info * | |
2054 | get_containing_section (const struct dwarf2_section_info *section) | |
2055 | { | |
2056 | gdb_assert (section->is_virtual); | |
2057 | return section->s.containing_section; | |
c906108c SS |
2058 | } |
2059 | ||
a32a8923 DE |
2060 | /* Return the bfd owner of SECTION. */ |
2061 | ||
2062 | static struct bfd * | |
2063 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2064 | { | |
73869dc2 DE |
2065 | if (section->is_virtual) |
2066 | { | |
2067 | section = get_containing_section (section); | |
2068 | gdb_assert (!section->is_virtual); | |
2069 | } | |
2070 | return section->s.asection->owner; | |
a32a8923 DE |
2071 | } |
2072 | ||
2073 | /* Return the bfd section of SECTION. | |
2074 | Returns NULL if the section is not present. */ | |
2075 | ||
2076 | static asection * | |
2077 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2078 | { | |
73869dc2 DE |
2079 | if (section->is_virtual) |
2080 | { | |
2081 | section = get_containing_section (section); | |
2082 | gdb_assert (!section->is_virtual); | |
2083 | } | |
2084 | return section->s.asection; | |
a32a8923 DE |
2085 | } |
2086 | ||
2087 | /* Return the name of SECTION. */ | |
2088 | ||
2089 | static const char * | |
2090 | get_section_name (const struct dwarf2_section_info *section) | |
2091 | { | |
2092 | asection *sectp = get_section_bfd_section (section); | |
2093 | ||
2094 | gdb_assert (sectp != NULL); | |
2095 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2096 | } | |
2097 | ||
2098 | /* Return the name of the file SECTION is in. */ | |
2099 | ||
2100 | static const char * | |
2101 | get_section_file_name (const struct dwarf2_section_info *section) | |
2102 | { | |
2103 | bfd *abfd = get_section_bfd_owner (section); | |
2104 | ||
2105 | return bfd_get_filename (abfd); | |
2106 | } | |
2107 | ||
2108 | /* Return the id of SECTION. | |
2109 | Returns 0 if SECTION doesn't exist. */ | |
2110 | ||
2111 | static int | |
2112 | get_section_id (const struct dwarf2_section_info *section) | |
2113 | { | |
2114 | asection *sectp = get_section_bfd_section (section); | |
2115 | ||
2116 | if (sectp == NULL) | |
2117 | return 0; | |
2118 | return sectp->id; | |
2119 | } | |
2120 | ||
2121 | /* Return the flags of SECTION. | |
73869dc2 | 2122 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2123 | |
2124 | static int | |
2125 | get_section_flags (const struct dwarf2_section_info *section) | |
2126 | { | |
2127 | asection *sectp = get_section_bfd_section (section); | |
2128 | ||
2129 | gdb_assert (sectp != NULL); | |
2130 | return bfd_get_section_flags (sectp->owner, sectp); | |
2131 | } | |
2132 | ||
251d32d9 TG |
2133 | /* When loading sections, we look either for uncompressed section or for |
2134 | compressed section names. */ | |
233a11ab CS |
2135 | |
2136 | static int | |
251d32d9 TG |
2137 | section_is_p (const char *section_name, |
2138 | const struct dwarf2_section_names *names) | |
233a11ab | 2139 | { |
251d32d9 TG |
2140 | if (names->normal != NULL |
2141 | && strcmp (section_name, names->normal) == 0) | |
2142 | return 1; | |
2143 | if (names->compressed != NULL | |
2144 | && strcmp (section_name, names->compressed) == 0) | |
2145 | return 1; | |
2146 | return 0; | |
233a11ab CS |
2147 | } |
2148 | ||
c906108c SS |
2149 | /* This function is mapped across the sections and remembers the |
2150 | offset and size of each of the debugging sections we are interested | |
2151 | in. */ | |
2152 | ||
2153 | static void | |
251d32d9 | 2154 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 2155 | { |
251d32d9 | 2156 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 2157 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
2158 | |
2159 | if (vnames == NULL) | |
2160 | names = &dwarf2_elf_names; | |
2161 | else | |
2162 | names = (const struct dwarf2_debug_sections *) vnames; | |
2163 | ||
dc7650b8 JK |
2164 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2165 | { | |
2166 | } | |
2167 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 2168 | { |
73869dc2 | 2169 | dwarf2_per_objfile->info.s.asection = sectp; |
dce234bc | 2170 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); |
c906108c | 2171 | } |
251d32d9 | 2172 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 2173 | { |
73869dc2 | 2174 | dwarf2_per_objfile->abbrev.s.asection = sectp; |
dce234bc | 2175 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); |
c906108c | 2176 | } |
251d32d9 | 2177 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 2178 | { |
73869dc2 | 2179 | dwarf2_per_objfile->line.s.asection = sectp; |
dce234bc | 2180 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); |
c906108c | 2181 | } |
251d32d9 | 2182 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 2183 | { |
73869dc2 | 2184 | dwarf2_per_objfile->loc.s.asection = sectp; |
dce234bc | 2185 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); |
c906108c | 2186 | } |
251d32d9 | 2187 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 2188 | { |
73869dc2 | 2189 | dwarf2_per_objfile->macinfo.s.asection = sectp; |
dce234bc | 2190 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); |
c906108c | 2191 | } |
cf2c3c16 TT |
2192 | else if (section_is_p (sectp->name, &names->macro)) |
2193 | { | |
73869dc2 | 2194 | dwarf2_per_objfile->macro.s.asection = sectp; |
cf2c3c16 TT |
2195 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); |
2196 | } | |
251d32d9 | 2197 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 2198 | { |
73869dc2 | 2199 | dwarf2_per_objfile->str.s.asection = sectp; |
dce234bc | 2200 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); |
c906108c | 2201 | } |
3019eac3 DE |
2202 | else if (section_is_p (sectp->name, &names->addr)) |
2203 | { | |
73869dc2 | 2204 | dwarf2_per_objfile->addr.s.asection = sectp; |
3019eac3 DE |
2205 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); |
2206 | } | |
251d32d9 | 2207 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 2208 | { |
73869dc2 | 2209 | dwarf2_per_objfile->frame.s.asection = sectp; |
dce234bc | 2210 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2211 | } |
251d32d9 | 2212 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 2213 | { |
73869dc2 | 2214 | dwarf2_per_objfile->eh_frame.s.asection = sectp; |
dc7650b8 | 2215 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2216 | } |
251d32d9 | 2217 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 2218 | { |
73869dc2 | 2219 | dwarf2_per_objfile->ranges.s.asection = sectp; |
dce234bc | 2220 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); |
af34e669 | 2221 | } |
251d32d9 | 2222 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 2223 | { |
8b70b953 TT |
2224 | struct dwarf2_section_info type_section; |
2225 | ||
2226 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 2227 | type_section.s.asection = sectp; |
8b70b953 TT |
2228 | type_section.size = bfd_get_section_size (sectp); |
2229 | ||
2230 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
2231 | &type_section); | |
348e048f | 2232 | } |
251d32d9 | 2233 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd | 2234 | { |
73869dc2 | 2235 | dwarf2_per_objfile->gdb_index.s.asection = sectp; |
9291a0cd TT |
2236 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); |
2237 | } | |
dce234bc | 2238 | |
72dca2f5 FR |
2239 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
2240 | && bfd_section_vma (abfd, sectp) == 0) | |
2241 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
2242 | } |
2243 | ||
fceca515 DE |
2244 | /* A helper function that decides whether a section is empty, |
2245 | or not present. */ | |
9e0ac564 TT |
2246 | |
2247 | static int | |
19ac8c2e | 2248 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2249 | { |
73869dc2 DE |
2250 | if (section->is_virtual) |
2251 | return section->size == 0; | |
2252 | return section->s.asection == NULL || section->size == 0; | |
9e0ac564 TT |
2253 | } |
2254 | ||
3019eac3 DE |
2255 | /* Read the contents of the section INFO. |
2256 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2257 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2258 | of the DWO file. | |
dce234bc | 2259 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2260 | |
dce234bc PP |
2261 | static void |
2262 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2263 | { |
a32a8923 | 2264 | asection *sectp; |
3019eac3 | 2265 | bfd *abfd; |
dce234bc | 2266 | gdb_byte *buf, *retbuf; |
c906108c | 2267 | |
be391dca TT |
2268 | if (info->readin) |
2269 | return; | |
dce234bc | 2270 | info->buffer = NULL; |
be391dca | 2271 | info->readin = 1; |
188dd5d6 | 2272 | |
9e0ac564 | 2273 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2274 | return; |
c906108c | 2275 | |
a32a8923 | 2276 | sectp = get_section_bfd_section (info); |
3019eac3 | 2277 | |
73869dc2 DE |
2278 | /* If this is a virtual section we need to read in the real one first. */ |
2279 | if (info->is_virtual) | |
2280 | { | |
2281 | struct dwarf2_section_info *containing_section = | |
2282 | get_containing_section (info); | |
2283 | ||
2284 | gdb_assert (sectp != NULL); | |
2285 | if ((sectp->flags & SEC_RELOC) != 0) | |
2286 | { | |
2287 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2288 | " supported in section %s [in module %s]"), | |
2289 | get_section_name (info), get_section_file_name (info)); | |
2290 | } | |
2291 | dwarf2_read_section (objfile, containing_section); | |
2292 | /* Other code should have already caught virtual sections that don't | |
2293 | fit. */ | |
2294 | gdb_assert (info->virtual_offset + info->size | |
2295 | <= containing_section->size); | |
2296 | /* If the real section is empty or there was a problem reading the | |
2297 | section we shouldn't get here. */ | |
2298 | gdb_assert (containing_section->buffer != NULL); | |
2299 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2300 | return; | |
2301 | } | |
2302 | ||
4bf44c1c TT |
2303 | /* If the section has relocations, we must read it ourselves. |
2304 | Otherwise we attach it to the BFD. */ | |
2305 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2306 | { |
d521ce57 | 2307 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2308 | return; |
dce234bc | 2309 | } |
dce234bc | 2310 | |
4bf44c1c TT |
2311 | buf = obstack_alloc (&objfile->objfile_obstack, info->size); |
2312 | info->buffer = buf; | |
dce234bc PP |
2313 | |
2314 | /* When debugging .o files, we may need to apply relocations; see | |
2315 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2316 | We never compress sections in .o files, so we only need to | |
2317 | try this when the section is not compressed. */ | |
ac8035ab | 2318 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2319 | if (retbuf != NULL) |
2320 | { | |
2321 | info->buffer = retbuf; | |
2322 | return; | |
2323 | } | |
2324 | ||
a32a8923 DE |
2325 | abfd = get_section_bfd_owner (info); |
2326 | gdb_assert (abfd != NULL); | |
2327 | ||
dce234bc PP |
2328 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2329 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2330 | { |
2331 | error (_("Dwarf Error: Can't read DWARF data" | |
2332 | " in section %s [in module %s]"), | |
2333 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2334 | } | |
dce234bc PP |
2335 | } |
2336 | ||
9e0ac564 TT |
2337 | /* A helper function that returns the size of a section in a safe way. |
2338 | If you are positive that the section has been read before using the | |
2339 | size, then it is safe to refer to the dwarf2_section_info object's | |
2340 | "size" field directly. In other cases, you must call this | |
2341 | function, because for compressed sections the size field is not set | |
2342 | correctly until the section has been read. */ | |
2343 | ||
2344 | static bfd_size_type | |
2345 | dwarf2_section_size (struct objfile *objfile, | |
2346 | struct dwarf2_section_info *info) | |
2347 | { | |
2348 | if (!info->readin) | |
2349 | dwarf2_read_section (objfile, info); | |
2350 | return info->size; | |
2351 | } | |
2352 | ||
dce234bc | 2353 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2354 | SECTION_NAME. */ |
af34e669 | 2355 | |
dce234bc | 2356 | void |
3017a003 TG |
2357 | dwarf2_get_section_info (struct objfile *objfile, |
2358 | enum dwarf2_section_enum sect, | |
d521ce57 | 2359 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2360 | bfd_size_type *sizep) |
2361 | { | |
2362 | struct dwarf2_per_objfile *data | |
2363 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
2364 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
2365 | |
2366 | /* We may see an objfile without any DWARF, in which case we just | |
2367 | return nothing. */ | |
2368 | if (data == NULL) | |
2369 | { | |
2370 | *sectp = NULL; | |
2371 | *bufp = NULL; | |
2372 | *sizep = 0; | |
2373 | return; | |
2374 | } | |
3017a003 TG |
2375 | switch (sect) |
2376 | { | |
2377 | case DWARF2_DEBUG_FRAME: | |
2378 | info = &data->frame; | |
2379 | break; | |
2380 | case DWARF2_EH_FRAME: | |
2381 | info = &data->eh_frame; | |
2382 | break; | |
2383 | default: | |
2384 | gdb_assert_not_reached ("unexpected section"); | |
2385 | } | |
dce234bc | 2386 | |
9e0ac564 | 2387 | dwarf2_read_section (objfile, info); |
dce234bc | 2388 | |
a32a8923 | 2389 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2390 | *bufp = info->buffer; |
2391 | *sizep = info->size; | |
2392 | } | |
2393 | ||
36586728 TT |
2394 | /* A helper function to find the sections for a .dwz file. */ |
2395 | ||
2396 | static void | |
2397 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2398 | { | |
2399 | struct dwz_file *dwz_file = arg; | |
2400 | ||
2401 | /* Note that we only support the standard ELF names, because .dwz | |
2402 | is ELF-only (at the time of writing). */ | |
2403 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2404 | { | |
73869dc2 | 2405 | dwz_file->abbrev.s.asection = sectp; |
36586728 TT |
2406 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2407 | } | |
2408 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2409 | { | |
73869dc2 | 2410 | dwz_file->info.s.asection = sectp; |
36586728 TT |
2411 | dwz_file->info.size = bfd_get_section_size (sectp); |
2412 | } | |
2413 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2414 | { | |
73869dc2 | 2415 | dwz_file->str.s.asection = sectp; |
36586728 TT |
2416 | dwz_file->str.size = bfd_get_section_size (sectp); |
2417 | } | |
2418 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2419 | { | |
73869dc2 | 2420 | dwz_file->line.s.asection = sectp; |
36586728 TT |
2421 | dwz_file->line.size = bfd_get_section_size (sectp); |
2422 | } | |
2423 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2424 | { | |
73869dc2 | 2425 | dwz_file->macro.s.asection = sectp; |
36586728 TT |
2426 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2427 | } | |
2ec9a5e0 TT |
2428 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2429 | { | |
73869dc2 | 2430 | dwz_file->gdb_index.s.asection = sectp; |
2ec9a5e0 TT |
2431 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2432 | } | |
36586728 TT |
2433 | } |
2434 | ||
4db1a1dc TT |
2435 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2436 | there is no .gnu_debugaltlink section in the file. Error if there | |
2437 | is such a section but the file cannot be found. */ | |
36586728 TT |
2438 | |
2439 | static struct dwz_file * | |
2440 | dwarf2_get_dwz_file (void) | |
2441 | { | |
4db1a1dc TT |
2442 | bfd *dwz_bfd; |
2443 | char *data; | |
36586728 TT |
2444 | struct cleanup *cleanup; |
2445 | const char *filename; | |
2446 | struct dwz_file *result; | |
acd13123 | 2447 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2448 | size_t buildid_len; |
2449 | bfd_byte *buildid; | |
36586728 TT |
2450 | |
2451 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2452 | return dwarf2_per_objfile->dwz_file; | |
2453 | ||
4db1a1dc TT |
2454 | bfd_set_error (bfd_error_no_error); |
2455 | data = bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
acd13123 | 2456 | &buildid_len_arg, &buildid); |
4db1a1dc TT |
2457 | if (data == NULL) |
2458 | { | |
2459 | if (bfd_get_error () == bfd_error_no_error) | |
2460 | return NULL; | |
2461 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2462 | bfd_errmsg (bfd_get_error ())); | |
2463 | } | |
36586728 | 2464 | cleanup = make_cleanup (xfree, data); |
dc294be5 | 2465 | make_cleanup (xfree, buildid); |
36586728 | 2466 | |
acd13123 TT |
2467 | buildid_len = (size_t) buildid_len_arg; |
2468 | ||
f9d83a0b | 2469 | filename = (const char *) data; |
36586728 TT |
2470 | if (!IS_ABSOLUTE_PATH (filename)) |
2471 | { | |
4262abfb | 2472 | char *abs = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); |
36586728 TT |
2473 | char *rel; |
2474 | ||
2475 | make_cleanup (xfree, abs); | |
2476 | abs = ldirname (abs); | |
2477 | make_cleanup (xfree, abs); | |
2478 | ||
2479 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2480 | make_cleanup (xfree, rel); | |
2481 | filename = rel; | |
2482 | } | |
2483 | ||
dc294be5 TT |
2484 | /* First try the file name given in the section. If that doesn't |
2485 | work, try to use the build-id instead. */ | |
36586728 | 2486 | dwz_bfd = gdb_bfd_open (filename, gnutarget, -1); |
dc294be5 | 2487 | if (dwz_bfd != NULL) |
36586728 | 2488 | { |
dc294be5 TT |
2489 | if (!build_id_verify (dwz_bfd, buildid_len, buildid)) |
2490 | { | |
2491 | gdb_bfd_unref (dwz_bfd); | |
2492 | dwz_bfd = NULL; | |
2493 | } | |
36586728 TT |
2494 | } |
2495 | ||
dc294be5 TT |
2496 | if (dwz_bfd == NULL) |
2497 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2498 | ||
2499 | if (dwz_bfd == NULL) | |
2500 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2501 | objfile_name (dwarf2_per_objfile->objfile)); | |
2502 | ||
36586728 TT |
2503 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
2504 | struct dwz_file); | |
2505 | result->dwz_bfd = dwz_bfd; | |
2506 | ||
2507 | bfd_map_over_sections (dwz_bfd, locate_dwz_sections, result); | |
2508 | ||
2509 | do_cleanups (cleanup); | |
2510 | ||
13aaf454 | 2511 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, dwz_bfd); |
8d2cc612 | 2512 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2513 | return result; |
2514 | } | |
9291a0cd | 2515 | \f |
7b9f3c50 DE |
2516 | /* DWARF quick_symbols_functions support. */ |
2517 | ||
2518 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2519 | unique line tables, so we maintain a separate table of all .debug_line | |
2520 | derived entries to support the sharing. | |
2521 | All the quick functions need is the list of file names. We discard the | |
2522 | line_header when we're done and don't need to record it here. */ | |
2523 | struct quick_file_names | |
2524 | { | |
094b34ac DE |
2525 | /* The data used to construct the hash key. */ |
2526 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2527 | |
2528 | /* The number of entries in file_names, real_names. */ | |
2529 | unsigned int num_file_names; | |
2530 | ||
2531 | /* The file names from the line table, after being run through | |
2532 | file_full_name. */ | |
2533 | const char **file_names; | |
2534 | ||
2535 | /* The file names from the line table after being run through | |
2536 | gdb_realpath. These are computed lazily. */ | |
2537 | const char **real_names; | |
2538 | }; | |
2539 | ||
2540 | /* When using the index (and thus not using psymtabs), each CU has an | |
2541 | object of this type. This is used to hold information needed by | |
2542 | the various "quick" methods. */ | |
2543 | struct dwarf2_per_cu_quick_data | |
2544 | { | |
2545 | /* The file table. This can be NULL if there was no file table | |
2546 | or it's currently not read in. | |
2547 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2548 | struct quick_file_names *file_names; | |
2549 | ||
2550 | /* The corresponding symbol table. This is NULL if symbols for this | |
2551 | CU have not yet been read. */ | |
43f3e411 | 2552 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2553 | |
2554 | /* A temporary mark bit used when iterating over all CUs in | |
2555 | expand_symtabs_matching. */ | |
2556 | unsigned int mark : 1; | |
2557 | ||
2558 | /* True if we've tried to read the file table and found there isn't one. | |
2559 | There will be no point in trying to read it again next time. */ | |
2560 | unsigned int no_file_data : 1; | |
2561 | }; | |
2562 | ||
094b34ac DE |
2563 | /* Utility hash function for a stmt_list_hash. */ |
2564 | ||
2565 | static hashval_t | |
2566 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2567 | { | |
2568 | hashval_t v = 0; | |
2569 | ||
2570 | if (stmt_list_hash->dwo_unit != NULL) | |
2571 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2572 | v += stmt_list_hash->line_offset.sect_off; | |
2573 | return v; | |
2574 | } | |
2575 | ||
2576 | /* Utility equality function for a stmt_list_hash. */ | |
2577 | ||
2578 | static int | |
2579 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2580 | const struct stmt_list_hash *rhs) | |
2581 | { | |
2582 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2583 | return 0; | |
2584 | if (lhs->dwo_unit != NULL | |
2585 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2586 | return 0; | |
2587 | ||
2588 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2589 | } | |
2590 | ||
7b9f3c50 DE |
2591 | /* Hash function for a quick_file_names. */ |
2592 | ||
2593 | static hashval_t | |
2594 | hash_file_name_entry (const void *e) | |
2595 | { | |
2596 | const struct quick_file_names *file_data = e; | |
2597 | ||
094b34ac | 2598 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2599 | } |
2600 | ||
2601 | /* Equality function for a quick_file_names. */ | |
2602 | ||
2603 | static int | |
2604 | eq_file_name_entry (const void *a, const void *b) | |
2605 | { | |
2606 | const struct quick_file_names *ea = a; | |
2607 | const struct quick_file_names *eb = b; | |
2608 | ||
094b34ac | 2609 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2610 | } |
2611 | ||
2612 | /* Delete function for a quick_file_names. */ | |
2613 | ||
2614 | static void | |
2615 | delete_file_name_entry (void *e) | |
2616 | { | |
2617 | struct quick_file_names *file_data = e; | |
2618 | int i; | |
2619 | ||
2620 | for (i = 0; i < file_data->num_file_names; ++i) | |
2621 | { | |
2622 | xfree ((void*) file_data->file_names[i]); | |
2623 | if (file_data->real_names) | |
2624 | xfree ((void*) file_data->real_names[i]); | |
2625 | } | |
2626 | ||
2627 | /* The space for the struct itself lives on objfile_obstack, | |
2628 | so we don't free it here. */ | |
2629 | } | |
2630 | ||
2631 | /* Create a quick_file_names hash table. */ | |
2632 | ||
2633 | static htab_t | |
2634 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2635 | { | |
2636 | return htab_create_alloc (nr_initial_entries, | |
2637 | hash_file_name_entry, eq_file_name_entry, | |
2638 | delete_file_name_entry, xcalloc, xfree); | |
2639 | } | |
9291a0cd | 2640 | |
918dd910 JK |
2641 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2642 | have to be created afterwards. You should call age_cached_comp_units after | |
2643 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2644 | ||
2645 | static void | |
2646 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2647 | { | |
3019eac3 | 2648 | if (per_cu->is_debug_types) |
e5fe5e75 | 2649 | load_full_type_unit (per_cu); |
918dd910 | 2650 | else |
95554aad | 2651 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2652 | |
918dd910 | 2653 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2654 | |
2655 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2656 | } |
2657 | ||
a0f42c21 | 2658 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2659 | |
9291a0cd | 2660 | static void |
a0f42c21 | 2661 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2662 | { |
2663 | struct cleanup *back_to; | |
2664 | ||
f4dc4d17 DE |
2665 | /* Skip type_unit_groups, reading the type units they contain |
2666 | is handled elsewhere. */ | |
2667 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2668 | return; | |
2669 | ||
9291a0cd TT |
2670 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2671 | ||
95554aad | 2672 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2673 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2674 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2675 | { | |
2676 | queue_comp_unit (per_cu, language_minimal); | |
2677 | load_cu (per_cu); | |
89e63ee4 DE |
2678 | |
2679 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2680 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2681 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2682 | if (!per_cu->is_debug_types | |
2683 | && per_cu->cu->dwo_unit != NULL | |
2684 | && dwarf2_per_objfile->index_table != NULL | |
2685 | && dwarf2_per_objfile->index_table->version <= 7 | |
2686 | /* DWP files aren't supported yet. */ | |
2687 | && get_dwp_file () == NULL) | |
2688 | queue_and_load_all_dwo_tus (per_cu); | |
95554aad | 2689 | } |
9291a0cd | 2690 | |
a0f42c21 | 2691 | process_queue (); |
9291a0cd TT |
2692 | |
2693 | /* Age the cache, releasing compilation units that have not | |
2694 | been used recently. */ | |
2695 | age_cached_comp_units (); | |
2696 | ||
2697 | do_cleanups (back_to); | |
2698 | } | |
2699 | ||
2700 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2701 | the objfile from which this CU came. Returns the resulting symbol | |
2702 | table. */ | |
2fdf6df6 | 2703 | |
43f3e411 | 2704 | static struct compunit_symtab * |
a0f42c21 | 2705 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2706 | { |
95554aad | 2707 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2708 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
2709 | { |
2710 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2711 | increment_reading_symtab (); | |
a0f42c21 | 2712 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2713 | process_cu_includes (); |
9291a0cd TT |
2714 | do_cleanups (back_to); |
2715 | } | |
f194fefb | 2716 | |
43f3e411 | 2717 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2718 | } |
2719 | ||
8832e7e3 | 2720 | /* Return the CU/TU given its index. |
f4dc4d17 DE |
2721 | |
2722 | This is intended for loops like: | |
2723 | ||
2724 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2725 | + dwarf2_per_objfile->n_type_units); ++i) | |
2726 | { | |
8832e7e3 | 2727 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
f4dc4d17 DE |
2728 | |
2729 | ...; | |
2730 | } | |
2731 | */ | |
2fdf6df6 | 2732 | |
1fd400ff | 2733 | static struct dwarf2_per_cu_data * |
8832e7e3 | 2734 | dw2_get_cutu (int index) |
1fd400ff TT |
2735 | { |
2736 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2737 | { | |
f4dc4d17 | 2738 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2739 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2740 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2741 | } |
2742 | ||
2743 | return dwarf2_per_objfile->all_comp_units[index]; | |
2744 | } | |
2745 | ||
8832e7e3 DE |
2746 | /* Return the CU given its index. |
2747 | This differs from dw2_get_cutu in that it's for when you know INDEX | |
2748 | refers to a CU. */ | |
f4dc4d17 DE |
2749 | |
2750 | static struct dwarf2_per_cu_data * | |
8832e7e3 | 2751 | dw2_get_cu (int index) |
f4dc4d17 | 2752 | { |
8832e7e3 | 2753 | gdb_assert (index >= 0 && index < dwarf2_per_objfile->n_comp_units); |
f4dc4d17 | 2754 | |
1fd400ff TT |
2755 | return dwarf2_per_objfile->all_comp_units[index]; |
2756 | } | |
2757 | ||
2ec9a5e0 TT |
2758 | /* A helper for create_cus_from_index that handles a given list of |
2759 | CUs. */ | |
2fdf6df6 | 2760 | |
74a0d9f6 | 2761 | static void |
2ec9a5e0 TT |
2762 | create_cus_from_index_list (struct objfile *objfile, |
2763 | const gdb_byte *cu_list, offset_type n_elements, | |
2764 | struct dwarf2_section_info *section, | |
2765 | int is_dwz, | |
2766 | int base_offset) | |
9291a0cd TT |
2767 | { |
2768 | offset_type i; | |
9291a0cd | 2769 | |
2ec9a5e0 | 2770 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2771 | { |
2772 | struct dwarf2_per_cu_data *the_cu; | |
2773 | ULONGEST offset, length; | |
2774 | ||
74a0d9f6 JK |
2775 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2776 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2777 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2778 | cu_list += 2 * 8; |
2779 | ||
2780 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2781 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2782 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2783 | the_cu->length = length; |
2784 | the_cu->objfile = objfile; | |
8a0459fd | 2785 | the_cu->section = section; |
9291a0cd TT |
2786 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2787 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2788 | the_cu->is_dwz = is_dwz; |
2789 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2790 | } |
9291a0cd TT |
2791 | } |
2792 | ||
2ec9a5e0 | 2793 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2794 | the CU objects for this objfile. */ |
2ec9a5e0 | 2795 | |
74a0d9f6 | 2796 | static void |
2ec9a5e0 TT |
2797 | create_cus_from_index (struct objfile *objfile, |
2798 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2799 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2800 | { | |
2801 | struct dwz_file *dwz; | |
2802 | ||
2803 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
2804 | dwarf2_per_objfile->all_comp_units | |
2805 | = obstack_alloc (&objfile->objfile_obstack, | |
2806 | dwarf2_per_objfile->n_comp_units | |
2807 | * sizeof (struct dwarf2_per_cu_data *)); | |
2808 | ||
74a0d9f6 JK |
2809 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2810 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2811 | |
2812 | if (dwz_elements == 0) | |
74a0d9f6 | 2813 | return; |
2ec9a5e0 TT |
2814 | |
2815 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2816 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2817 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2818 | } |
2819 | ||
1fd400ff | 2820 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2821 | |
74a0d9f6 | 2822 | static void |
673bfd45 | 2823 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2824 | struct dwarf2_section_info *section, |
673bfd45 DE |
2825 | const gdb_byte *bytes, |
2826 | offset_type elements) | |
1fd400ff TT |
2827 | { |
2828 | offset_type i; | |
673bfd45 | 2829 | htab_t sig_types_hash; |
1fd400ff | 2830 | |
6aa5f3a6 DE |
2831 | dwarf2_per_objfile->n_type_units |
2832 | = dwarf2_per_objfile->n_allocated_type_units | |
2833 | = elements / 3; | |
d467dd73 | 2834 | dwarf2_per_objfile->all_type_units |
a2ce51a0 DE |
2835 | = xmalloc (dwarf2_per_objfile->n_type_units |
2836 | * sizeof (struct signatured_type *)); | |
1fd400ff | 2837 | |
673bfd45 | 2838 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2839 | |
2840 | for (i = 0; i < elements; i += 3) | |
2841 | { | |
52dc124a DE |
2842 | struct signatured_type *sig_type; |
2843 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2844 | void **slot; |
2845 | ||
74a0d9f6 JK |
2846 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2847 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2848 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2849 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2850 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2851 | bytes += 3 * 8; | |
2852 | ||
52dc124a | 2853 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2854 | struct signatured_type); |
52dc124a | 2855 | sig_type->signature = signature; |
3019eac3 DE |
2856 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2857 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 2858 | sig_type->per_cu.section = section; |
52dc124a DE |
2859 | sig_type->per_cu.offset.sect_off = offset; |
2860 | sig_type->per_cu.objfile = objfile; | |
2861 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2862 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2863 | struct dwarf2_per_cu_quick_data); | |
2864 | ||
52dc124a DE |
2865 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2866 | *slot = sig_type; | |
1fd400ff | 2867 | |
b4dd5633 | 2868 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2869 | } |
2870 | ||
673bfd45 | 2871 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2872 | } |
2873 | ||
9291a0cd TT |
2874 | /* Read the address map data from the mapped index, and use it to |
2875 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2876 | |
9291a0cd TT |
2877 | static void |
2878 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2879 | { | |
3e29f34a | 2880 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd TT |
2881 | const gdb_byte *iter, *end; |
2882 | struct obstack temp_obstack; | |
2883 | struct addrmap *mutable_map; | |
2884 | struct cleanup *cleanup; | |
2885 | CORE_ADDR baseaddr; | |
2886 | ||
2887 | obstack_init (&temp_obstack); | |
2888 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2889 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2890 | ||
2891 | iter = index->address_table; | |
2892 | end = iter + index->address_table_size; | |
2893 | ||
2894 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2895 | ||
2896 | while (iter < end) | |
2897 | { | |
2898 | ULONGEST hi, lo, cu_index; | |
2899 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2900 | iter += 8; | |
2901 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2902 | iter += 8; | |
2903 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2904 | iter += 4; | |
f652bce2 | 2905 | |
24a55014 | 2906 | if (lo > hi) |
f652bce2 | 2907 | { |
24a55014 DE |
2908 | complaint (&symfile_complaints, |
2909 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 2910 | hex_string (lo), hex_string (hi)); |
24a55014 | 2911 | continue; |
f652bce2 | 2912 | } |
24a55014 DE |
2913 | |
2914 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
2915 | { |
2916 | complaint (&symfile_complaints, | |
2917 | _(".gdb_index address table has invalid CU number %u"), | |
2918 | (unsigned) cu_index); | |
24a55014 | 2919 | continue; |
f652bce2 | 2920 | } |
24a55014 | 2921 | |
3e29f34a MR |
2922 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
2923 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
2924 | addrmap_set_empty (mutable_map, lo, hi - 1, dw2_get_cutu (cu_index)); | |
9291a0cd TT |
2925 | } |
2926 | ||
2927 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2928 | &objfile->objfile_obstack); | |
2929 | do_cleanups (cleanup); | |
2930 | } | |
2931 | ||
59d7bcaf JK |
2932 | /* The hash function for strings in the mapped index. This is the same as |
2933 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2934 | implementation. This is necessary because the hash function is tied to the | |
2935 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2936 | SYMBOL_HASH_NEXT. |
2937 | ||
2938 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2939 | |
9291a0cd | 2940 | static hashval_t |
559a7a62 | 2941 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2942 | { |
2943 | const unsigned char *str = (const unsigned char *) p; | |
2944 | hashval_t r = 0; | |
2945 | unsigned char c; | |
2946 | ||
2947 | while ((c = *str++) != 0) | |
559a7a62 JK |
2948 | { |
2949 | if (index_version >= 5) | |
2950 | c = tolower (c); | |
2951 | r = r * 67 + c - 113; | |
2952 | } | |
9291a0cd TT |
2953 | |
2954 | return r; | |
2955 | } | |
2956 | ||
2957 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2958 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2959 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2960 | |
9291a0cd TT |
2961 | static int |
2962 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2963 | offset_type **vec_out) | |
2964 | { | |
0cf03b49 JK |
2965 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2966 | offset_type hash; | |
9291a0cd | 2967 | offset_type slot, step; |
559a7a62 | 2968 | int (*cmp) (const char *, const char *); |
9291a0cd | 2969 | |
0cf03b49 JK |
2970 | if (current_language->la_language == language_cplus |
2971 | || current_language->la_language == language_java | |
2972 | || current_language->la_language == language_fortran) | |
2973 | { | |
2974 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2975 | not contain any. */ | |
a8719064 | 2976 | |
72998fb3 | 2977 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2978 | { |
72998fb3 | 2979 | char *without_params = cp_remove_params (name); |
0cf03b49 | 2980 | |
72998fb3 DE |
2981 | if (without_params != NULL) |
2982 | { | |
2983 | make_cleanup (xfree, without_params); | |
2984 | name = without_params; | |
2985 | } | |
0cf03b49 JK |
2986 | } |
2987 | } | |
2988 | ||
559a7a62 | 2989 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2990 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2991 | simulate our NAME being searched is also lowercased. */ |
2992 | hash = mapped_index_string_hash ((index->version == 4 | |
2993 | && case_sensitivity == case_sensitive_off | |
2994 | ? 5 : index->version), | |
2995 | name); | |
2996 | ||
3876f04e DE |
2997 | slot = hash & (index->symbol_table_slots - 1); |
2998 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2999 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3000 | |
3001 | for (;;) | |
3002 | { | |
3003 | /* Convert a slot number to an offset into the table. */ | |
3004 | offset_type i = 2 * slot; | |
3005 | const char *str; | |
3876f04e | 3006 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
3007 | { |
3008 | do_cleanups (back_to); | |
3009 | return 0; | |
3010 | } | |
9291a0cd | 3011 | |
3876f04e | 3012 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 3013 | if (!cmp (name, str)) |
9291a0cd TT |
3014 | { |
3015 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 3016 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 3017 | do_cleanups (back_to); |
9291a0cd TT |
3018 | return 1; |
3019 | } | |
3020 | ||
3876f04e | 3021 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
3022 | } |
3023 | } | |
3024 | ||
2ec9a5e0 TT |
3025 | /* A helper function that reads the .gdb_index from SECTION and fills |
3026 | in MAP. FILENAME is the name of the file containing the section; | |
3027 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
3028 | ok to use deprecated sections. | |
3029 | ||
3030 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3031 | out parameters that are filled in with information about the CU and | |
3032 | TU lists in the section. | |
3033 | ||
3034 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3035 | |
9291a0cd | 3036 | static int |
2ec9a5e0 TT |
3037 | read_index_from_section (struct objfile *objfile, |
3038 | const char *filename, | |
3039 | int deprecated_ok, | |
3040 | struct dwarf2_section_info *section, | |
3041 | struct mapped_index *map, | |
3042 | const gdb_byte **cu_list, | |
3043 | offset_type *cu_list_elements, | |
3044 | const gdb_byte **types_list, | |
3045 | offset_type *types_list_elements) | |
9291a0cd | 3046 | { |
948f8e3d | 3047 | const gdb_byte *addr; |
2ec9a5e0 | 3048 | offset_type version; |
b3b272e1 | 3049 | offset_type *metadata; |
1fd400ff | 3050 | int i; |
9291a0cd | 3051 | |
2ec9a5e0 | 3052 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3053 | return 0; |
82430852 JK |
3054 | |
3055 | /* Older elfutils strip versions could keep the section in the main | |
3056 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3057 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3058 | return 0; |
3059 | ||
2ec9a5e0 | 3060 | dwarf2_read_section (objfile, section); |
9291a0cd | 3061 | |
2ec9a5e0 | 3062 | addr = section->buffer; |
9291a0cd | 3063 | /* Version check. */ |
1fd400ff | 3064 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3065 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3066 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3067 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3068 | indices. */ |
831adc1f | 3069 | if (version < 4) |
481860b3 GB |
3070 | { |
3071 | static int warning_printed = 0; | |
3072 | if (!warning_printed) | |
3073 | { | |
3074 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3075 | filename); |
481860b3 GB |
3076 | warning_printed = 1; |
3077 | } | |
3078 | return 0; | |
3079 | } | |
3080 | /* Index version 4 uses a different hash function than index version | |
3081 | 5 and later. | |
3082 | ||
3083 | Versions earlier than 6 did not emit psymbols for inlined | |
3084 | functions. Using these files will cause GDB not to be able to | |
3085 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3086 | indices unless the user has done |
3087 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3088 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3089 | { |
3090 | static int warning_printed = 0; | |
3091 | if (!warning_printed) | |
3092 | { | |
e615022a DE |
3093 | warning (_("\ |
3094 | Skipping deprecated .gdb_index section in %s.\n\ | |
3095 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3096 | to use the section anyway."), | |
2ec9a5e0 | 3097 | filename); |
481860b3 GB |
3098 | warning_printed = 1; |
3099 | } | |
3100 | return 0; | |
3101 | } | |
796a7ff8 | 3102 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3103 | of the TU (for symbols coming from TUs), |
3104 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3105 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3106 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3107 | These are just performance bugs, and we can't distinguish gdb-generated | |
3108 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3109 | |
481860b3 | 3110 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3111 | longer backward compatible. */ |
796a7ff8 | 3112 | if (version > 8) |
594e8718 | 3113 | return 0; |
9291a0cd | 3114 | |
559a7a62 | 3115 | map->version = version; |
2ec9a5e0 | 3116 | map->total_size = section->size; |
9291a0cd TT |
3117 | |
3118 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3119 | |
3120 | i = 0; | |
2ec9a5e0 TT |
3121 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3122 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3123 | / 8); | |
1fd400ff TT |
3124 | ++i; |
3125 | ||
2ec9a5e0 TT |
3126 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3127 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3128 | - MAYBE_SWAP (metadata[i])) | |
3129 | / 8); | |
987d643c | 3130 | ++i; |
1fd400ff TT |
3131 | |
3132 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3133 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3134 | - MAYBE_SWAP (metadata[i])); | |
3135 | ++i; | |
3136 | ||
3876f04e DE |
3137 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3138 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3139 | - MAYBE_SWAP (metadata[i])) | |
3140 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3141 | ++i; |
9291a0cd | 3142 | |
f9d83a0b | 3143 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3144 | |
2ec9a5e0 TT |
3145 | return 1; |
3146 | } | |
3147 | ||
3148 | ||
3149 | /* Read the index file. If everything went ok, initialize the "quick" | |
3150 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
3151 | ||
3152 | static int | |
3153 | dwarf2_read_index (struct objfile *objfile) | |
3154 | { | |
3155 | struct mapped_index local_map, *map; | |
3156 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3157 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3158 | struct dwz_file *dwz; |
2ec9a5e0 | 3159 | |
4262abfb | 3160 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3161 | use_deprecated_index_sections, |
3162 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3163 | &cu_list, &cu_list_elements, | |
3164 | &types_list, &types_list_elements)) | |
3165 | return 0; | |
3166 | ||
0fefef59 | 3167 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3168 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3169 | return 0; |
3170 | ||
2ec9a5e0 TT |
3171 | /* If there is a .dwz file, read it so we can get its CU list as |
3172 | well. */ | |
4db1a1dc TT |
3173 | dwz = dwarf2_get_dwz_file (); |
3174 | if (dwz != NULL) | |
2ec9a5e0 | 3175 | { |
2ec9a5e0 TT |
3176 | struct mapped_index dwz_map; |
3177 | const gdb_byte *dwz_types_ignore; | |
3178 | offset_type dwz_types_elements_ignore; | |
3179 | ||
3180 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3181 | 1, | |
3182 | &dwz->gdb_index, &dwz_map, | |
3183 | &dwz_list, &dwz_list_elements, | |
3184 | &dwz_types_ignore, | |
3185 | &dwz_types_elements_ignore)) | |
3186 | { | |
3187 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3188 | bfd_get_filename (dwz->dwz_bfd)); | |
3189 | return 0; | |
3190 | } | |
3191 | } | |
3192 | ||
74a0d9f6 JK |
3193 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3194 | dwz_list_elements); | |
1fd400ff | 3195 | |
8b70b953 TT |
3196 | if (types_list_elements) |
3197 | { | |
3198 | struct dwarf2_section_info *section; | |
3199 | ||
3200 | /* We can only handle a single .debug_types when we have an | |
3201 | index. */ | |
3202 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3203 | return 0; | |
3204 | ||
3205 | section = VEC_index (dwarf2_section_info_def, | |
3206 | dwarf2_per_objfile->types, 0); | |
3207 | ||
74a0d9f6 JK |
3208 | create_signatured_type_table_from_index (objfile, section, types_list, |
3209 | types_list_elements); | |
8b70b953 | 3210 | } |
9291a0cd | 3211 | |
2ec9a5e0 TT |
3212 | create_addrmap_from_index (objfile, &local_map); |
3213 | ||
3214 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
3215 | *map = local_map; | |
9291a0cd TT |
3216 | |
3217 | dwarf2_per_objfile->index_table = map; | |
3218 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3219 | dwarf2_per_objfile->quick_file_names_table = |
3220 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3221 | |
3222 | return 1; | |
3223 | } | |
3224 | ||
3225 | /* A helper for the "quick" functions which sets the global | |
3226 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3227 | |
9291a0cd TT |
3228 | static void |
3229 | dw2_setup (struct objfile *objfile) | |
3230 | { | |
3231 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
3232 | gdb_assert (dwarf2_per_objfile); | |
3233 | } | |
3234 | ||
dee91e82 | 3235 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3236 | |
dee91e82 DE |
3237 | static void |
3238 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3239 | const gdb_byte *info_ptr, |
dee91e82 DE |
3240 | struct die_info *comp_unit_die, |
3241 | int has_children, | |
3242 | void *data) | |
9291a0cd | 3243 | { |
dee91e82 DE |
3244 | struct dwarf2_cu *cu = reader->cu; |
3245 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3246 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3247 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 3248 | struct line_header *lh; |
9291a0cd | 3249 | struct attribute *attr; |
dee91e82 | 3250 | int i; |
15d034d0 | 3251 | const char *name, *comp_dir; |
7b9f3c50 DE |
3252 | void **slot; |
3253 | struct quick_file_names *qfn; | |
3254 | unsigned int line_offset; | |
9291a0cd | 3255 | |
0186c6a7 DE |
3256 | gdb_assert (! this_cu->is_debug_types); |
3257 | ||
07261596 TT |
3258 | /* Our callers never want to match partial units -- instead they |
3259 | will match the enclosing full CU. */ | |
3260 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3261 | { | |
3262 | this_cu->v.quick->no_file_data = 1; | |
3263 | return; | |
3264 | } | |
3265 | ||
0186c6a7 | 3266 | lh_cu = this_cu; |
7b9f3c50 DE |
3267 | lh = NULL; |
3268 | slot = NULL; | |
3269 | line_offset = 0; | |
dee91e82 DE |
3270 | |
3271 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
3272 | if (attr) |
3273 | { | |
7b9f3c50 DE |
3274 | struct quick_file_names find_entry; |
3275 | ||
3276 | line_offset = DW_UNSND (attr); | |
3277 | ||
3278 | /* We may have already read in this line header (TU line header sharing). | |
3279 | If we have we're done. */ | |
094b34ac DE |
3280 | find_entry.hash.dwo_unit = cu->dwo_unit; |
3281 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3282 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3283 | &find_entry, INSERT); | |
3284 | if (*slot != NULL) | |
3285 | { | |
094b34ac | 3286 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 3287 | return; |
7b9f3c50 DE |
3288 | } |
3289 | ||
3019eac3 | 3290 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3291 | } |
3292 | if (lh == NULL) | |
3293 | { | |
094b34ac | 3294 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3295 | return; |
9291a0cd TT |
3296 | } |
3297 | ||
7b9f3c50 | 3298 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
3299 | qfn->hash.dwo_unit = cu->dwo_unit; |
3300 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3301 | gdb_assert (slot != NULL); |
3302 | *slot = qfn; | |
9291a0cd | 3303 | |
dee91e82 | 3304 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 3305 | |
7b9f3c50 DE |
3306 | qfn->num_file_names = lh->num_file_names; |
3307 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
3308 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 3309 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
3310 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
3311 | qfn->real_names = NULL; | |
9291a0cd | 3312 | |
7b9f3c50 | 3313 | free_line_header (lh); |
7b9f3c50 | 3314 | |
094b34ac | 3315 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3316 | } |
3317 | ||
3318 | /* A helper for the "quick" functions which attempts to read the line | |
3319 | table for THIS_CU. */ | |
3320 | ||
3321 | static struct quick_file_names * | |
e4a48d9d | 3322 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3323 | { |
0186c6a7 DE |
3324 | /* This should never be called for TUs. */ |
3325 | gdb_assert (! this_cu->is_debug_types); | |
3326 | /* Nor type unit groups. */ | |
3327 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3328 | |
dee91e82 DE |
3329 | if (this_cu->v.quick->file_names != NULL) |
3330 | return this_cu->v.quick->file_names; | |
3331 | /* If we know there is no line data, no point in looking again. */ | |
3332 | if (this_cu->v.quick->no_file_data) | |
3333 | return NULL; | |
3334 | ||
0186c6a7 | 3335 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3336 | |
3337 | if (this_cu->v.quick->no_file_data) | |
3338 | return NULL; | |
3339 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3340 | } |
3341 | ||
3342 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3343 | real path for a given file name from the line table. */ |
2fdf6df6 | 3344 | |
9291a0cd | 3345 | static const char * |
7b9f3c50 DE |
3346 | dw2_get_real_path (struct objfile *objfile, |
3347 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3348 | { |
7b9f3c50 DE |
3349 | if (qfn->real_names == NULL) |
3350 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3351 | qfn->num_file_names, const char *); |
9291a0cd | 3352 | |
7b9f3c50 DE |
3353 | if (qfn->real_names[index] == NULL) |
3354 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 3355 | |
7b9f3c50 | 3356 | return qfn->real_names[index]; |
9291a0cd TT |
3357 | } |
3358 | ||
3359 | static struct symtab * | |
3360 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3361 | { | |
43f3e411 | 3362 | struct compunit_symtab *cust; |
9291a0cd | 3363 | int index; |
ae2de4f8 | 3364 | |
9291a0cd TT |
3365 | dw2_setup (objfile); |
3366 | index = dwarf2_per_objfile->n_comp_units - 1; | |
43f3e411 DE |
3367 | cust = dw2_instantiate_symtab (dw2_get_cutu (index)); |
3368 | if (cust == NULL) | |
3369 | return NULL; | |
3370 | return compunit_primary_filetab (cust); | |
9291a0cd TT |
3371 | } |
3372 | ||
7b9f3c50 DE |
3373 | /* Traversal function for dw2_forget_cached_source_info. */ |
3374 | ||
3375 | static int | |
3376 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3377 | { |
7b9f3c50 | 3378 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3379 | |
7b9f3c50 | 3380 | if (file_data->real_names) |
9291a0cd | 3381 | { |
7b9f3c50 | 3382 | int i; |
9291a0cd | 3383 | |
7b9f3c50 | 3384 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3385 | { |
7b9f3c50 DE |
3386 | xfree ((void*) file_data->real_names[i]); |
3387 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3388 | } |
3389 | } | |
7b9f3c50 DE |
3390 | |
3391 | return 1; | |
3392 | } | |
3393 | ||
3394 | static void | |
3395 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3396 | { | |
3397 | dw2_setup (objfile); | |
3398 | ||
3399 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3400 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3401 | } |
3402 | ||
f8eba3c6 TT |
3403 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3404 | the symtabs and calls the iterator. */ | |
3405 | ||
3406 | static int | |
3407 | dw2_map_expand_apply (struct objfile *objfile, | |
3408 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3409 | const char *name, const char *real_path, |
f8eba3c6 TT |
3410 | int (*callback) (struct symtab *, void *), |
3411 | void *data) | |
3412 | { | |
43f3e411 | 3413 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3414 | |
3415 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3416 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3417 | return 0; |
3418 | ||
3419 | /* This may expand more than one symtab, and we want to iterate over | |
3420 | all of them. */ | |
a0f42c21 | 3421 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3422 | |
f5b95b50 | 3423 | return iterate_over_some_symtabs (name, real_path, callback, data, |
43f3e411 | 3424 | objfile->compunit_symtabs, last_made); |
f8eba3c6 TT |
3425 | } |
3426 | ||
3427 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3428 | ||
9291a0cd | 3429 | static int |
f8eba3c6 | 3430 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3431 | const char *real_path, |
f8eba3c6 TT |
3432 | int (*callback) (struct symtab *, void *), |
3433 | void *data) | |
9291a0cd TT |
3434 | { |
3435 | int i; | |
c011a4f4 | 3436 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3437 | |
3438 | dw2_setup (objfile); | |
ae2de4f8 | 3439 | |
848e3e78 DE |
3440 | /* The rule is CUs specify all the files, including those used by |
3441 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3442 | |
848e3e78 | 3443 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3444 | { |
3445 | int j; | |
8832e7e3 | 3446 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3447 | struct quick_file_names *file_data; |
9291a0cd | 3448 | |
3d7bb9d9 | 3449 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3450 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3451 | continue; |
3452 | ||
e4a48d9d | 3453 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3454 | if (file_data == NULL) |
9291a0cd TT |
3455 | continue; |
3456 | ||
7b9f3c50 | 3457 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3458 | { |
7b9f3c50 | 3459 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3460 | const char *this_real_name; |
9291a0cd | 3461 | |
af529f8f | 3462 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3463 | { |
f5b95b50 | 3464 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3465 | callback, data)) |
3466 | return 1; | |
288e77a7 | 3467 | continue; |
4aac40c8 | 3468 | } |
9291a0cd | 3469 | |
c011a4f4 DE |
3470 | /* Before we invoke realpath, which can get expensive when many |
3471 | files are involved, do a quick comparison of the basenames. */ | |
3472 | if (! basenames_may_differ | |
3473 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3474 | continue; | |
3475 | ||
da235a7c JK |
3476 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3477 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3478 | { |
da235a7c JK |
3479 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3480 | callback, data)) | |
3481 | return 1; | |
288e77a7 | 3482 | continue; |
da235a7c | 3483 | } |
9291a0cd | 3484 | |
da235a7c JK |
3485 | if (real_path != NULL) |
3486 | { | |
af529f8f JK |
3487 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3488 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3489 | if (this_real_name != NULL |
af529f8f | 3490 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3491 | { |
f5b95b50 | 3492 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3493 | callback, data)) |
3494 | return 1; | |
288e77a7 | 3495 | continue; |
9291a0cd TT |
3496 | } |
3497 | } | |
3498 | } | |
3499 | } | |
3500 | ||
9291a0cd TT |
3501 | return 0; |
3502 | } | |
3503 | ||
da51c347 DE |
3504 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3505 | ||
3506 | struct dw2_symtab_iterator | |
9291a0cd | 3507 | { |
da51c347 DE |
3508 | /* The internalized form of .gdb_index. */ |
3509 | struct mapped_index *index; | |
3510 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3511 | int want_specific_block; | |
3512 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3513 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3514 | int block_index; | |
3515 | /* The kind of symbol we're looking for. */ | |
3516 | domain_enum domain; | |
3517 | /* The list of CUs from the index entry of the symbol, | |
3518 | or NULL if not found. */ | |
3519 | offset_type *vec; | |
3520 | /* The next element in VEC to look at. */ | |
3521 | int next; | |
3522 | /* The number of elements in VEC, or zero if there is no match. */ | |
3523 | int length; | |
8943b874 DE |
3524 | /* Have we seen a global version of the symbol? |
3525 | If so we can ignore all further global instances. | |
3526 | This is to work around gold/15646, inefficient gold-generated | |
3527 | indices. */ | |
3528 | int global_seen; | |
da51c347 | 3529 | }; |
9291a0cd | 3530 | |
da51c347 DE |
3531 | /* Initialize the index symtab iterator ITER. |
3532 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3533 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3534 | |
9291a0cd | 3535 | static void |
da51c347 DE |
3536 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3537 | struct mapped_index *index, | |
3538 | int want_specific_block, | |
3539 | int block_index, | |
3540 | domain_enum domain, | |
3541 | const char *name) | |
3542 | { | |
3543 | iter->index = index; | |
3544 | iter->want_specific_block = want_specific_block; | |
3545 | iter->block_index = block_index; | |
3546 | iter->domain = domain; | |
3547 | iter->next = 0; | |
8943b874 | 3548 | iter->global_seen = 0; |
da51c347 DE |
3549 | |
3550 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3551 | iter->length = MAYBE_SWAP (*iter->vec); | |
3552 | else | |
3553 | { | |
3554 | iter->vec = NULL; | |
3555 | iter->length = 0; | |
3556 | } | |
3557 | } | |
3558 | ||
3559 | /* Return the next matching CU or NULL if there are no more. */ | |
3560 | ||
3561 | static struct dwarf2_per_cu_data * | |
3562 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3563 | { | |
3564 | for ( ; iter->next < iter->length; ++iter->next) | |
3565 | { | |
3566 | offset_type cu_index_and_attrs = | |
3567 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3568 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 3569 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
3570 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3571 | /* This value is only valid for index versions >= 7. */ | |
3572 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3573 | gdb_index_symbol_kind symbol_kind = | |
3574 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3575 | /* Only check the symbol attributes if they're present. | |
3576 | Indices prior to version 7 don't record them, | |
3577 | and indices >= 7 may elide them for certain symbols | |
3578 | (gold does this). */ | |
3579 | int attrs_valid = | |
3580 | (iter->index->version >= 7 | |
3581 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3582 | ||
3190f0c6 DE |
3583 | /* Don't crash on bad data. */ |
3584 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3585 | + dwarf2_per_objfile->n_type_units)) | |
3586 | { | |
3587 | complaint (&symfile_complaints, | |
3588 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3589 | " [in module %s]"), |
3590 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3591 | continue; |
3592 | } | |
3593 | ||
8832e7e3 | 3594 | per_cu = dw2_get_cutu (cu_index); |
3190f0c6 | 3595 | |
da51c347 | 3596 | /* Skip if already read in. */ |
43f3e411 | 3597 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3598 | continue; |
3599 | ||
8943b874 DE |
3600 | /* Check static vs global. */ |
3601 | if (attrs_valid) | |
3602 | { | |
3603 | if (iter->want_specific_block | |
3604 | && want_static != is_static) | |
3605 | continue; | |
3606 | /* Work around gold/15646. */ | |
3607 | if (!is_static && iter->global_seen) | |
3608 | continue; | |
3609 | if (!is_static) | |
3610 | iter->global_seen = 1; | |
3611 | } | |
da51c347 DE |
3612 | |
3613 | /* Only check the symbol's kind if it has one. */ | |
3614 | if (attrs_valid) | |
3615 | { | |
3616 | switch (iter->domain) | |
3617 | { | |
3618 | case VAR_DOMAIN: | |
3619 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3620 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3621 | /* Some types are also in VAR_DOMAIN. */ | |
3622 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3623 | continue; | |
3624 | break; | |
3625 | case STRUCT_DOMAIN: | |
3626 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3627 | continue; | |
3628 | break; | |
3629 | case LABEL_DOMAIN: | |
3630 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3631 | continue; | |
3632 | break; | |
3633 | default: | |
3634 | break; | |
3635 | } | |
3636 | } | |
3637 | ||
3638 | ++iter->next; | |
3639 | return per_cu; | |
3640 | } | |
3641 | ||
3642 | return NULL; | |
3643 | } | |
3644 | ||
43f3e411 | 3645 | static struct compunit_symtab * |
da51c347 DE |
3646 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
3647 | const char *name, domain_enum domain) | |
9291a0cd | 3648 | { |
43f3e411 | 3649 | struct compunit_symtab *stab_best = NULL; |
156942c7 DE |
3650 | struct mapped_index *index; |
3651 | ||
9291a0cd TT |
3652 | dw2_setup (objfile); |
3653 | ||
156942c7 DE |
3654 | index = dwarf2_per_objfile->index_table; |
3655 | ||
da51c347 | 3656 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3657 | if (index) |
9291a0cd | 3658 | { |
da51c347 DE |
3659 | struct dw2_symtab_iterator iter; |
3660 | struct dwarf2_per_cu_data *per_cu; | |
3661 | ||
3662 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3663 | |
da51c347 | 3664 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3665 | { |
da51c347 | 3666 | struct symbol *sym = NULL; |
43f3e411 DE |
3667 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); |
3668 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
f194fefb | 3669 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 DE |
3670 | |
3671 | /* Some caution must be observed with overloaded functions | |
3672 | and methods, since the index will not contain any overload | |
3673 | information (but NAME might contain it). */ | |
f194fefb | 3674 | sym = block_lookup_symbol (block, name, domain); |
1fd400ff | 3675 | |
da51c347 DE |
3676 | if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) |
3677 | { | |
3678 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
3679 | return stab; | |
3680 | ||
3681 | stab_best = stab; | |
9291a0cd | 3682 | } |
da51c347 DE |
3683 | |
3684 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3685 | } |
3686 | } | |
9291a0cd | 3687 | |
da51c347 | 3688 | return stab_best; |
9291a0cd TT |
3689 | } |
3690 | ||
3691 | static void | |
3692 | dw2_print_stats (struct objfile *objfile) | |
3693 | { | |
e4a48d9d | 3694 | int i, total, count; |
9291a0cd TT |
3695 | |
3696 | dw2_setup (objfile); | |
e4a48d9d | 3697 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3698 | count = 0; |
e4a48d9d | 3699 | for (i = 0; i < total; ++i) |
9291a0cd | 3700 | { |
8832e7e3 | 3701 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3702 | |
43f3e411 | 3703 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3704 | ++count; |
3705 | } | |
e4a48d9d | 3706 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3707 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3708 | } | |
3709 | ||
779bd270 DE |
3710 | /* This dumps minimal information about the index. |
3711 | It is called via "mt print objfiles". | |
3712 | One use is to verify .gdb_index has been loaded by the | |
3713 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3714 | ||
9291a0cd TT |
3715 | static void |
3716 | dw2_dump (struct objfile *objfile) | |
3717 | { | |
779bd270 DE |
3718 | dw2_setup (objfile); |
3719 | gdb_assert (dwarf2_per_objfile->using_index); | |
3720 | printf_filtered (".gdb_index:"); | |
3721 | if (dwarf2_per_objfile->index_table != NULL) | |
3722 | { | |
3723 | printf_filtered (" version %d\n", | |
3724 | dwarf2_per_objfile->index_table->version); | |
3725 | } | |
3726 | else | |
3727 | printf_filtered (" faked for \"readnow\"\n"); | |
3728 | printf_filtered ("\n"); | |
9291a0cd TT |
3729 | } |
3730 | ||
3731 | static void | |
3189cb12 DE |
3732 | dw2_relocate (struct objfile *objfile, |
3733 | const struct section_offsets *new_offsets, | |
3734 | const struct section_offsets *delta) | |
9291a0cd TT |
3735 | { |
3736 | /* There's nothing to relocate here. */ | |
3737 | } | |
3738 | ||
3739 | static void | |
3740 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3741 | const char *func_name) | |
3742 | { | |
da51c347 DE |
3743 | struct mapped_index *index; |
3744 | ||
3745 | dw2_setup (objfile); | |
3746 | ||
3747 | index = dwarf2_per_objfile->index_table; | |
3748 | ||
3749 | /* index is NULL if OBJF_READNOW. */ | |
3750 | if (index) | |
3751 | { | |
3752 | struct dw2_symtab_iterator iter; | |
3753 | struct dwarf2_per_cu_data *per_cu; | |
3754 | ||
3755 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3756 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3757 | func_name); | |
3758 | ||
3759 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3760 | dw2_instantiate_symtab (per_cu); | |
3761 | } | |
9291a0cd TT |
3762 | } |
3763 | ||
3764 | static void | |
3765 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3766 | { | |
3767 | int i; | |
3768 | ||
3769 | dw2_setup (objfile); | |
1fd400ff TT |
3770 | |
3771 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3772 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3773 | { |
8832e7e3 | 3774 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3775 | |
a0f42c21 | 3776 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3777 | } |
3778 | } | |
3779 | ||
3780 | static void | |
652a8996 JK |
3781 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3782 | const char *fullname) | |
9291a0cd TT |
3783 | { |
3784 | int i; | |
3785 | ||
3786 | dw2_setup (objfile); | |
d4637a04 DE |
3787 | |
3788 | /* We don't need to consider type units here. | |
3789 | This is only called for examining code, e.g. expand_line_sal. | |
3790 | There can be an order of magnitude (or more) more type units | |
3791 | than comp units, and we avoid them if we can. */ | |
3792 | ||
3793 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3794 | { |
3795 | int j; | |
8832e7e3 | 3796 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
7b9f3c50 | 3797 | struct quick_file_names *file_data; |
9291a0cd | 3798 | |
3d7bb9d9 | 3799 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3800 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3801 | continue; |
3802 | ||
e4a48d9d | 3803 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3804 | if (file_data == NULL) |
9291a0cd TT |
3805 | continue; |
3806 | ||
7b9f3c50 | 3807 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3808 | { |
652a8996 JK |
3809 | const char *this_fullname = file_data->file_names[j]; |
3810 | ||
3811 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3812 | { |
a0f42c21 | 3813 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3814 | break; |
3815 | } | |
3816 | } | |
3817 | } | |
3818 | } | |
3819 | ||
9291a0cd | 3820 | static void |
ade7ed9e | 3821 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 3822 | const char * name, domain_enum domain, |
ade7ed9e | 3823 | int global, |
40658b94 PH |
3824 | int (*callback) (struct block *, |
3825 | struct symbol *, void *), | |
2edb89d3 JK |
3826 | void *data, symbol_compare_ftype *match, |
3827 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3828 | { |
40658b94 | 3829 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3830 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3831 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3832 | } |
3833 | ||
3834 | static void | |
f8eba3c6 TT |
3835 | dw2_expand_symtabs_matching |
3836 | (struct objfile *objfile, | |
206f2a57 DE |
3837 | expand_symtabs_file_matcher_ftype *file_matcher, |
3838 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, | |
276d885b | 3839 | expand_symtabs_exp_notify_ftype *expansion_notify, |
f8eba3c6 TT |
3840 | enum search_domain kind, |
3841 | void *data) | |
9291a0cd TT |
3842 | { |
3843 | int i; | |
3844 | offset_type iter; | |
4b5246aa | 3845 | struct mapped_index *index; |
9291a0cd TT |
3846 | |
3847 | dw2_setup (objfile); | |
ae2de4f8 DE |
3848 | |
3849 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3850 | if (!dwarf2_per_objfile->index_table) |
3851 | return; | |
4b5246aa | 3852 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3853 | |
7b08b9eb | 3854 | if (file_matcher != NULL) |
24c79950 TT |
3855 | { |
3856 | struct cleanup *cleanup; | |
3857 | htab_t visited_found, visited_not_found; | |
3858 | ||
3859 | visited_found = htab_create_alloc (10, | |
3860 | htab_hash_pointer, htab_eq_pointer, | |
3861 | NULL, xcalloc, xfree); | |
3862 | cleanup = make_cleanup_htab_delete (visited_found); | |
3863 | visited_not_found = htab_create_alloc (10, | |
3864 | htab_hash_pointer, htab_eq_pointer, | |
3865 | NULL, xcalloc, xfree); | |
3866 | make_cleanup_htab_delete (visited_not_found); | |
3867 | ||
848e3e78 DE |
3868 | /* The rule is CUs specify all the files, including those used by |
3869 | any TU, so there's no need to scan TUs here. */ | |
3870 | ||
3871 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3872 | { |
3873 | int j; | |
8832e7e3 | 3874 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
24c79950 TT |
3875 | struct quick_file_names *file_data; |
3876 | void **slot; | |
7b08b9eb | 3877 | |
24c79950 | 3878 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3879 | |
24c79950 | 3880 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3881 | if (per_cu->v.quick->compunit_symtab) |
24c79950 | 3882 | continue; |
7b08b9eb | 3883 | |
e4a48d9d | 3884 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3885 | if (file_data == NULL) |
3886 | continue; | |
7b08b9eb | 3887 | |
24c79950 TT |
3888 | if (htab_find (visited_not_found, file_data) != NULL) |
3889 | continue; | |
3890 | else if (htab_find (visited_found, file_data) != NULL) | |
3891 | { | |
3892 | per_cu->v.quick->mark = 1; | |
3893 | continue; | |
3894 | } | |
3895 | ||
3896 | for (j = 0; j < file_data->num_file_names; ++j) | |
3897 | { | |
da235a7c JK |
3898 | const char *this_real_name; |
3899 | ||
fbd9ab74 | 3900 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3901 | { |
3902 | per_cu->v.quick->mark = 1; | |
3903 | break; | |
3904 | } | |
da235a7c JK |
3905 | |
3906 | /* Before we invoke realpath, which can get expensive when many | |
3907 | files are involved, do a quick comparison of the basenames. */ | |
3908 | if (!basenames_may_differ | |
3909 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3910 | data, 1)) | |
3911 | continue; | |
3912 | ||
3913 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3914 | if (file_matcher (this_real_name, data, 0)) | |
3915 | { | |
3916 | per_cu->v.quick->mark = 1; | |
3917 | break; | |
3918 | } | |
24c79950 TT |
3919 | } |
3920 | ||
3921 | slot = htab_find_slot (per_cu->v.quick->mark | |
3922 | ? visited_found | |
3923 | : visited_not_found, | |
3924 | file_data, INSERT); | |
3925 | *slot = file_data; | |
3926 | } | |
3927 | ||
3928 | do_cleanups (cleanup); | |
3929 | } | |
9291a0cd | 3930 | |
3876f04e | 3931 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3932 | { |
3933 | offset_type idx = 2 * iter; | |
3934 | const char *name; | |
3935 | offset_type *vec, vec_len, vec_idx; | |
8943b874 | 3936 | int global_seen = 0; |
9291a0cd | 3937 | |
3876f04e | 3938 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3939 | continue; |
3940 | ||
3876f04e | 3941 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3942 | |
206f2a57 | 3943 | if (! (*symbol_matcher) (name, data)) |
9291a0cd TT |
3944 | continue; |
3945 | ||
3946 | /* The name was matched, now expand corresponding CUs that were | |
3947 | marked. */ | |
4b5246aa | 3948 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3949 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3950 | vec_len = MAYBE_SWAP (vec[0]); |
3951 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3952 | { | |
e254ef6a | 3953 | struct dwarf2_per_cu_data *per_cu; |
156942c7 | 3954 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
8943b874 DE |
3955 | /* This value is only valid for index versions >= 7. */ |
3956 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
156942c7 DE |
3957 | gdb_index_symbol_kind symbol_kind = |
3958 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3959 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 DE |
3960 | /* Only check the symbol attributes if they're present. |
3961 | Indices prior to version 7 don't record them, | |
3962 | and indices >= 7 may elide them for certain symbols | |
3963 | (gold does this). */ | |
3964 | int attrs_valid = | |
3965 | (index->version >= 7 | |
3966 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3967 | ||
8943b874 DE |
3968 | /* Work around gold/15646. */ |
3969 | if (attrs_valid) | |
3970 | { | |
3971 | if (!is_static && global_seen) | |
3972 | continue; | |
3973 | if (!is_static) | |
3974 | global_seen = 1; | |
3975 | } | |
3976 | ||
3190f0c6 DE |
3977 | /* Only check the symbol's kind if it has one. */ |
3978 | if (attrs_valid) | |
156942c7 DE |
3979 | { |
3980 | switch (kind) | |
3981 | { | |
3982 | case VARIABLES_DOMAIN: | |
3983 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3984 | continue; | |
3985 | break; | |
3986 | case FUNCTIONS_DOMAIN: | |
3987 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3988 | continue; | |
3989 | break; | |
3990 | case TYPES_DOMAIN: | |
3991 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3992 | continue; | |
3993 | break; | |
3994 | default: | |
3995 | break; | |
3996 | } | |
3997 | } | |
3998 | ||
3190f0c6 DE |
3999 | /* Don't crash on bad data. */ |
4000 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
4001 | + dwarf2_per_objfile->n_type_units)) | |
4002 | { | |
4003 | complaint (&symfile_complaints, | |
4004 | _(".gdb_index entry has bad CU index" | |
4262abfb | 4005 | " [in module %s]"), objfile_name (objfile)); |
3190f0c6 DE |
4006 | continue; |
4007 | } | |
4008 | ||
8832e7e3 | 4009 | per_cu = dw2_get_cutu (cu_index); |
7b08b9eb | 4010 | if (file_matcher == NULL || per_cu->v.quick->mark) |
276d885b GB |
4011 | { |
4012 | int symtab_was_null = | |
4013 | (per_cu->v.quick->compunit_symtab == NULL); | |
4014 | ||
4015 | dw2_instantiate_symtab (per_cu); | |
4016 | ||
4017 | if (expansion_notify != NULL | |
4018 | && symtab_was_null | |
4019 | && per_cu->v.quick->compunit_symtab != NULL) | |
4020 | { | |
4021 | expansion_notify (per_cu->v.quick->compunit_symtab, | |
4022 | data); | |
4023 | } | |
4024 | } | |
9291a0cd TT |
4025 | } |
4026 | } | |
4027 | } | |
4028 | ||
43f3e411 | 4029 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific |
9703b513 TT |
4030 | symtab. */ |
4031 | ||
43f3e411 DE |
4032 | static struct compunit_symtab * |
4033 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4034 | CORE_ADDR pc) | |
9703b513 TT |
4035 | { |
4036 | int i; | |
4037 | ||
43f3e411 DE |
4038 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL |
4039 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4040 | return cust; | |
9703b513 | 4041 | |
43f3e411 | 4042 | if (cust->includes == NULL) |
a3ec0bb1 DE |
4043 | return NULL; |
4044 | ||
43f3e411 | 4045 | for (i = 0; cust->includes[i]; ++i) |
9703b513 | 4046 | { |
43f3e411 | 4047 | struct compunit_symtab *s = cust->includes[i]; |
9703b513 | 4048 | |
43f3e411 | 4049 | s = recursively_find_pc_sect_compunit_symtab (s, pc); |
9703b513 TT |
4050 | if (s != NULL) |
4051 | return s; | |
4052 | } | |
4053 | ||
4054 | return NULL; | |
4055 | } | |
4056 | ||
43f3e411 DE |
4057 | static struct compunit_symtab * |
4058 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4059 | struct bound_minimal_symbol msymbol, | |
4060 | CORE_ADDR pc, | |
4061 | struct obj_section *section, | |
4062 | int warn_if_readin) | |
9291a0cd TT |
4063 | { |
4064 | struct dwarf2_per_cu_data *data; | |
43f3e411 | 4065 | struct compunit_symtab *result; |
9291a0cd TT |
4066 | |
4067 | dw2_setup (objfile); | |
4068 | ||
4069 | if (!objfile->psymtabs_addrmap) | |
4070 | return NULL; | |
4071 | ||
4072 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
4073 | if (!data) | |
4074 | return NULL; | |
4075 | ||
43f3e411 | 4076 | if (warn_if_readin && data->v.quick->compunit_symtab) |
abebb8b0 | 4077 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
4078 | paddress (get_objfile_arch (objfile), pc)); |
4079 | ||
43f3e411 DE |
4080 | result |
4081 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
4082 | pc); | |
9703b513 TT |
4083 | gdb_assert (result != NULL); |
4084 | return result; | |
9291a0cd TT |
4085 | } |
4086 | ||
9291a0cd | 4087 | static void |
44b13c5a | 4088 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 4089 | void *data, int need_fullname) |
9291a0cd TT |
4090 | { |
4091 | int i; | |
24c79950 TT |
4092 | struct cleanup *cleanup; |
4093 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
4094 | NULL, xcalloc, xfree); | |
9291a0cd | 4095 | |
24c79950 | 4096 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 4097 | dw2_setup (objfile); |
ae2de4f8 | 4098 | |
848e3e78 DE |
4099 | /* The rule is CUs specify all the files, including those used by |
4100 | any TU, so there's no need to scan TUs here. | |
4101 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 4102 | |
848e3e78 | 4103 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 | 4104 | { |
8832e7e3 | 4105 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
24c79950 | 4106 | |
43f3e411 | 4107 | if (per_cu->v.quick->compunit_symtab) |
24c79950 TT |
4108 | { |
4109 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
4110 | INSERT); | |
4111 | ||
4112 | *slot = per_cu->v.quick->file_names; | |
4113 | } | |
4114 | } | |
4115 | ||
848e3e78 | 4116 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4117 | { |
4118 | int j; | |
8832e7e3 | 4119 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 4120 | struct quick_file_names *file_data; |
24c79950 | 4121 | void **slot; |
9291a0cd | 4122 | |
3d7bb9d9 | 4123 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4124 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4125 | continue; |
4126 | ||
e4a48d9d | 4127 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4128 | if (file_data == NULL) |
9291a0cd TT |
4129 | continue; |
4130 | ||
24c79950 TT |
4131 | slot = htab_find_slot (visited, file_data, INSERT); |
4132 | if (*slot) | |
4133 | { | |
4134 | /* Already visited. */ | |
4135 | continue; | |
4136 | } | |
4137 | *slot = file_data; | |
4138 | ||
7b9f3c50 | 4139 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4140 | { |
74e2f255 DE |
4141 | const char *this_real_name; |
4142 | ||
4143 | if (need_fullname) | |
4144 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4145 | else | |
4146 | this_real_name = NULL; | |
7b9f3c50 | 4147 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
4148 | } |
4149 | } | |
24c79950 TT |
4150 | |
4151 | do_cleanups (cleanup); | |
9291a0cd TT |
4152 | } |
4153 | ||
4154 | static int | |
4155 | dw2_has_symbols (struct objfile *objfile) | |
4156 | { | |
4157 | return 1; | |
4158 | } | |
4159 | ||
4160 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4161 | { | |
4162 | dw2_has_symbols, | |
4163 | dw2_find_last_source_symtab, | |
4164 | dw2_forget_cached_source_info, | |
f8eba3c6 | 4165 | dw2_map_symtabs_matching_filename, |
9291a0cd | 4166 | dw2_lookup_symbol, |
9291a0cd TT |
4167 | dw2_print_stats, |
4168 | dw2_dump, | |
4169 | dw2_relocate, | |
4170 | dw2_expand_symtabs_for_function, | |
4171 | dw2_expand_all_symtabs, | |
652a8996 | 4172 | dw2_expand_symtabs_with_fullname, |
40658b94 | 4173 | dw2_map_matching_symbols, |
9291a0cd | 4174 | dw2_expand_symtabs_matching, |
43f3e411 | 4175 | dw2_find_pc_sect_compunit_symtab, |
9291a0cd TT |
4176 | dw2_map_symbol_filenames |
4177 | }; | |
4178 | ||
4179 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
4180 | file will use psymtabs, or 1 if using the GNU index. */ | |
4181 | ||
4182 | int | |
4183 | dwarf2_initialize_objfile (struct objfile *objfile) | |
4184 | { | |
4185 | /* If we're about to read full symbols, don't bother with the | |
4186 | indices. In this case we also don't care if some other debug | |
4187 | format is making psymtabs, because they are all about to be | |
4188 | expanded anyway. */ | |
4189 | if ((objfile->flags & OBJF_READNOW)) | |
4190 | { | |
4191 | int i; | |
4192 | ||
4193 | dwarf2_per_objfile->using_index = 1; | |
4194 | create_all_comp_units (objfile); | |
0e50663e | 4195 | create_all_type_units (objfile); |
7b9f3c50 DE |
4196 | dwarf2_per_objfile->quick_file_names_table = |
4197 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 4198 | |
1fd400ff | 4199 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 4200 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4201 | { |
8832e7e3 | 4202 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 4203 | |
e254ef6a DE |
4204 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
4205 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
4206 | } |
4207 | ||
4208 | /* Return 1 so that gdb sees the "quick" functions. However, | |
4209 | these functions will be no-ops because we will have expanded | |
4210 | all symtabs. */ | |
4211 | return 1; | |
4212 | } | |
4213 | ||
4214 | if (dwarf2_read_index (objfile)) | |
4215 | return 1; | |
4216 | ||
9291a0cd TT |
4217 | return 0; |
4218 | } | |
4219 | ||
4220 | \f | |
4221 | ||
dce234bc PP |
4222 | /* Build a partial symbol table. */ |
4223 | ||
4224 | void | |
f29dff0a | 4225 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 4226 | { |
c9bf0622 | 4227 | |
f29dff0a | 4228 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
4229 | { |
4230 | init_psymbol_list (objfile, 1024); | |
4231 | } | |
4232 | ||
492d29ea | 4233 | TRY |
c9bf0622 TT |
4234 | { |
4235 | /* This isn't really ideal: all the data we allocate on the | |
4236 | objfile's obstack is still uselessly kept around. However, | |
4237 | freeing it seems unsafe. */ | |
4238 | struct cleanup *cleanups = make_cleanup_discard_psymtabs (objfile); | |
4239 | ||
4240 | dwarf2_build_psymtabs_hard (objfile); | |
4241 | discard_cleanups (cleanups); | |
4242 | } | |
492d29ea PA |
4243 | CATCH (except, RETURN_MASK_ERROR) |
4244 | { | |
4245 | exception_print (gdb_stderr, except); | |
4246 | } | |
4247 | END_CATCH | |
c906108c | 4248 | } |
c906108c | 4249 | |
1ce1cefd DE |
4250 | /* Return the total length of the CU described by HEADER. */ |
4251 | ||
4252 | static unsigned int | |
4253 | get_cu_length (const struct comp_unit_head *header) | |
4254 | { | |
4255 | return header->initial_length_size + header->length; | |
4256 | } | |
4257 | ||
45452591 DE |
4258 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
4259 | ||
4260 | static inline int | |
b64f50a1 | 4261 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 4262 | { |
b64f50a1 | 4263 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 4264 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 4265 | |
b64f50a1 | 4266 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
4267 | } |
4268 | ||
3b80fe9b DE |
4269 | /* Find the base address of the compilation unit for range lists and |
4270 | location lists. It will normally be specified by DW_AT_low_pc. | |
4271 | In DWARF-3 draft 4, the base address could be overridden by | |
4272 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
4273 | compilation units with discontinuous ranges. */ | |
4274 | ||
4275 | static void | |
4276 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
4277 | { | |
4278 | struct attribute *attr; | |
4279 | ||
4280 | cu->base_known = 0; | |
4281 | cu->base_address = 0; | |
4282 | ||
4283 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
4284 | if (attr) | |
4285 | { | |
31aa7e4e | 4286 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4287 | cu->base_known = 1; |
4288 | } | |
4289 | else | |
4290 | { | |
4291 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4292 | if (attr) | |
4293 | { | |
31aa7e4e | 4294 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4295 | cu->base_known = 1; |
4296 | } | |
4297 | } | |
4298 | } | |
4299 | ||
93311388 DE |
4300 | /* Read in the comp unit header information from the debug_info at info_ptr. |
4301 | NOTE: This leaves members offset, first_die_offset to be filled in | |
4302 | by the caller. */ | |
107d2387 | 4303 | |
d521ce57 | 4304 | static const gdb_byte * |
107d2387 | 4305 | read_comp_unit_head (struct comp_unit_head *cu_header, |
d521ce57 | 4306 | const gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
4307 | { |
4308 | int signed_addr; | |
891d2f0b | 4309 | unsigned int bytes_read; |
c764a876 DE |
4310 | |
4311 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
4312 | cu_header->initial_length_size = bytes_read; | |
4313 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 4314 | info_ptr += bytes_read; |
107d2387 AC |
4315 | cu_header->version = read_2_bytes (abfd, info_ptr); |
4316 | info_ptr += 2; | |
b64f50a1 JK |
4317 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
4318 | &bytes_read); | |
613e1657 | 4319 | info_ptr += bytes_read; |
107d2387 AC |
4320 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
4321 | info_ptr += 1; | |
4322 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
4323 | if (signed_addr < 0) | |
8e65ff28 | 4324 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4325 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 4326 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 4327 | |
107d2387 AC |
4328 | return info_ptr; |
4329 | } | |
4330 | ||
36586728 TT |
4331 | /* Helper function that returns the proper abbrev section for |
4332 | THIS_CU. */ | |
4333 | ||
4334 | static struct dwarf2_section_info * | |
4335 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
4336 | { | |
4337 | struct dwarf2_section_info *abbrev; | |
4338 | ||
4339 | if (this_cu->is_dwz) | |
4340 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
4341 | else | |
4342 | abbrev = &dwarf2_per_objfile->abbrev; | |
4343 | ||
4344 | return abbrev; | |
4345 | } | |
4346 | ||
9ff913ba DE |
4347 | /* Subroutine of read_and_check_comp_unit_head and |
4348 | read_and_check_type_unit_head to simplify them. | |
4349 | Perform various error checking on the header. */ | |
4350 | ||
4351 | static void | |
4352 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
4353 | struct dwarf2_section_info *section, |
4354 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 4355 | { |
a32a8923 DE |
4356 | bfd *abfd = get_section_bfd_owner (section); |
4357 | const char *filename = get_section_file_name (section); | |
9ff913ba DE |
4358 | |
4359 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
4360 | error (_("Dwarf Error: wrong version in compilation unit header " | |
4361 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
4362 | filename); | |
4363 | ||
b64f50a1 | 4364 | if (header->abbrev_offset.sect_off |
36586728 | 4365 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
4366 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
4367 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 4368 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
4369 | filename); |
4370 | ||
4371 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
4372 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4373 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4374 | > section->size) |
4375 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4376 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4377 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4378 | filename); |
4379 | } | |
4380 | ||
4381 | /* Read in a CU/TU header and perform some basic error checking. | |
4382 | The contents of the header are stored in HEADER. | |
4383 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4384 | |
d521ce57 | 4385 | static const gdb_byte * |
9ff913ba DE |
4386 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4387 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4388 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4389 | const gdb_byte *info_ptr, |
9ff913ba | 4390 | int is_debug_types_section) |
72bf9492 | 4391 | { |
d521ce57 | 4392 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4393 | bfd *abfd = get_section_bfd_owner (section); |
72bf9492 | 4394 | |
b64f50a1 | 4395 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4396 | |
72bf9492 DJ |
4397 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
4398 | ||
460c1c54 CC |
4399 | /* If we're reading a type unit, skip over the signature and |
4400 | type_offset fields. */ | |
b0df02fd | 4401 | if (is_debug_types_section) |
460c1c54 CC |
4402 | info_ptr += 8 /*signature*/ + header->offset_size; |
4403 | ||
b64f50a1 | 4404 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 4405 | |
4bdcc0c1 | 4406 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
4407 | |
4408 | return info_ptr; | |
4409 | } | |
4410 | ||
348e048f DE |
4411 | /* Read in the types comp unit header information from .debug_types entry at |
4412 | types_ptr. The result is a pointer to one past the end of the header. */ | |
4413 | ||
d521ce57 | 4414 | static const gdb_byte * |
9ff913ba DE |
4415 | read_and_check_type_unit_head (struct comp_unit_head *header, |
4416 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4417 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4418 | const gdb_byte *info_ptr, |
dee91e82 DE |
4419 | ULONGEST *signature, |
4420 | cu_offset *type_offset_in_tu) | |
348e048f | 4421 | { |
d521ce57 | 4422 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4423 | bfd *abfd = get_section_bfd_owner (section); |
348e048f | 4424 | |
b64f50a1 | 4425 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 4426 | |
9ff913ba | 4427 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 4428 | |
9ff913ba DE |
4429 | /* If we're reading a type unit, skip over the signature and |
4430 | type_offset fields. */ | |
4431 | if (signature != NULL) | |
4432 | *signature = read_8_bytes (abfd, info_ptr); | |
4433 | info_ptr += 8; | |
dee91e82 DE |
4434 | if (type_offset_in_tu != NULL) |
4435 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
4436 | header->offset_size); | |
9ff913ba DE |
4437 | info_ptr += header->offset_size; |
4438 | ||
b64f50a1 | 4439 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4440 | |
4bdcc0c1 | 4441 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4442 | |
4443 | return info_ptr; | |
348e048f DE |
4444 | } |
4445 | ||
f4dc4d17 DE |
4446 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4447 | ||
4448 | static sect_offset | |
4449 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4450 | sect_offset offset) | |
4451 | { | |
a32a8923 | 4452 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 4453 | const gdb_byte *info_ptr; |
f4dc4d17 DE |
4454 | unsigned int length, initial_length_size, offset_size; |
4455 | sect_offset abbrev_offset; | |
4456 | ||
4457 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4458 | info_ptr = section->buffer + offset.sect_off; | |
4459 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
4460 | offset_size = initial_length_size == 4 ? 4 : 8; | |
4461 | info_ptr += initial_length_size + 2 /*version*/; | |
4462 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
4463 | return abbrev_offset; | |
4464 | } | |
4465 | ||
aaa75496 JB |
4466 | /* Allocate a new partial symtab for file named NAME and mark this new |
4467 | partial symtab as being an include of PST. */ | |
4468 | ||
4469 | static void | |
d521ce57 | 4470 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
4471 | struct objfile *objfile) |
4472 | { | |
4473 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4474 | ||
fbd9ab74 JK |
4475 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4476 | { | |
4477 | /* It shares objfile->objfile_obstack. */ | |
4478 | subpst->dirname = pst->dirname; | |
4479 | } | |
4480 | ||
aaa75496 JB |
4481 | subpst->section_offsets = pst->section_offsets; |
4482 | subpst->textlow = 0; | |
4483 | subpst->texthigh = 0; | |
4484 | ||
4485 | subpst->dependencies = (struct partial_symtab **) | |
4486 | obstack_alloc (&objfile->objfile_obstack, | |
4487 | sizeof (struct partial_symtab *)); | |
4488 | subpst->dependencies[0] = pst; | |
4489 | subpst->number_of_dependencies = 1; | |
4490 | ||
4491 | subpst->globals_offset = 0; | |
4492 | subpst->n_global_syms = 0; | |
4493 | subpst->statics_offset = 0; | |
4494 | subpst->n_static_syms = 0; | |
43f3e411 | 4495 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
4496 | subpst->read_symtab = pst->read_symtab; |
4497 | subpst->readin = 0; | |
4498 | ||
4499 | /* No private part is necessary for include psymtabs. This property | |
4500 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4501 | the regular ones. */ |
58a9656e | 4502 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4503 | } |
4504 | ||
4505 | /* Read the Line Number Program data and extract the list of files | |
4506 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4507 | partial symtab for each of these included files. */ |
aaa75496 JB |
4508 | |
4509 | static void | |
4510 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4511 | struct die_info *die, |
4512 | struct partial_symtab *pst) | |
aaa75496 | 4513 | { |
d85a05f0 DJ |
4514 | struct line_header *lh = NULL; |
4515 | struct attribute *attr; | |
aaa75496 | 4516 | |
d85a05f0 DJ |
4517 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4518 | if (attr) | |
3019eac3 | 4519 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4520 | if (lh == NULL) |
4521 | return; /* No linetable, so no includes. */ | |
4522 | ||
c6da4cef | 4523 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
527f3840 | 4524 | dwarf_decode_lines (lh, pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
4525 | |
4526 | free_line_header (lh); | |
4527 | } | |
4528 | ||
348e048f | 4529 | static hashval_t |
52dc124a | 4530 | hash_signatured_type (const void *item) |
348e048f | 4531 | { |
52dc124a | 4532 | const struct signatured_type *sig_type = item; |
9a619af0 | 4533 | |
348e048f | 4534 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4535 | return sig_type->signature; |
348e048f DE |
4536 | } |
4537 | ||
4538 | static int | |
52dc124a | 4539 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
4540 | { |
4541 | const struct signatured_type *lhs = item_lhs; | |
4542 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4543 | |
348e048f DE |
4544 | return lhs->signature == rhs->signature; |
4545 | } | |
4546 | ||
1fd400ff TT |
4547 | /* Allocate a hash table for signatured types. */ |
4548 | ||
4549 | static htab_t | |
673bfd45 | 4550 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4551 | { |
4552 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4553 | hash_signatured_type, |
4554 | eq_signatured_type, | |
1fd400ff TT |
4555 | NULL, |
4556 | &objfile->objfile_obstack, | |
4557 | hashtab_obstack_allocate, | |
4558 | dummy_obstack_deallocate); | |
4559 | } | |
4560 | ||
d467dd73 | 4561 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4562 | |
4563 | static int | |
d467dd73 | 4564 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4565 | { |
4566 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4567 | struct signatured_type ***datap = datum; |
1fd400ff | 4568 | |
b4dd5633 | 4569 | **datap = sigt; |
1fd400ff TT |
4570 | ++*datap; |
4571 | ||
4572 | return 1; | |
4573 | } | |
4574 | ||
c88ee1f0 DE |
4575 | /* Create the hash table of all entries in the .debug_types |
4576 | (or .debug_types.dwo) section(s). | |
4577 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4578 | otherwise it is NULL. | |
4579 | ||
4580 | The result is a pointer to the hash table or NULL if there are no types. | |
4581 | ||
4582 | Note: This function processes DWO files only, not DWP files. */ | |
348e048f | 4583 | |
3019eac3 DE |
4584 | static htab_t |
4585 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4586 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4587 | { |
3019eac3 | 4588 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4589 | htab_t types_htab = NULL; |
8b70b953 TT |
4590 | int ix; |
4591 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4592 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4593 | |
3019eac3 DE |
4594 | if (VEC_empty (dwarf2_section_info_def, types)) |
4595 | return NULL; | |
348e048f | 4596 | |
4bdcc0c1 DE |
4597 | abbrev_section = (dwo_file != NULL |
4598 | ? &dwo_file->sections.abbrev | |
4599 | : &dwarf2_per_objfile->abbrev); | |
4600 | ||
09406207 DE |
4601 | if (dwarf2_read_debug) |
4602 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
4603 | dwo_file ? ".dwo" : "", | |
a32a8923 | 4604 | get_section_file_name (abbrev_section)); |
09406207 | 4605 | |
8b70b953 | 4606 | for (ix = 0; |
3019eac3 | 4607 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4608 | ++ix) |
4609 | { | |
3019eac3 | 4610 | bfd *abfd; |
d521ce57 | 4611 | const gdb_byte *info_ptr, *end_ptr; |
348e048f | 4612 | |
8b70b953 TT |
4613 | dwarf2_read_section (objfile, section); |
4614 | info_ptr = section->buffer; | |
348e048f | 4615 | |
8b70b953 TT |
4616 | if (info_ptr == NULL) |
4617 | continue; | |
348e048f | 4618 | |
3019eac3 | 4619 | /* We can't set abfd until now because the section may be empty or |
a32a8923 DE |
4620 | not present, in which case the bfd is unknown. */ |
4621 | abfd = get_section_bfd_owner (section); | |
3019eac3 | 4622 | |
dee91e82 DE |
4623 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4624 | because we don't need to read any dies: the signature is in the | |
4625 | header. */ | |
8b70b953 TT |
4626 | |
4627 | end_ptr = info_ptr + section->size; | |
4628 | while (info_ptr < end_ptr) | |
4629 | { | |
b64f50a1 | 4630 | sect_offset offset; |
3019eac3 | 4631 | cu_offset type_offset_in_tu; |
8b70b953 | 4632 | ULONGEST signature; |
52dc124a | 4633 | struct signatured_type *sig_type; |
3019eac3 | 4634 | struct dwo_unit *dwo_tu; |
8b70b953 | 4635 | void **slot; |
d521ce57 | 4636 | const gdb_byte *ptr = info_ptr; |
9ff913ba | 4637 | struct comp_unit_head header; |
dee91e82 | 4638 | unsigned int length; |
348e048f | 4639 | |
b64f50a1 | 4640 | offset.sect_off = ptr - section->buffer; |
348e048f | 4641 | |
8b70b953 | 4642 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4643 | table, but we don't need anything else just yet. */ |
348e048f | 4644 | |
4bdcc0c1 DE |
4645 | ptr = read_and_check_type_unit_head (&header, section, |
4646 | abbrev_section, ptr, | |
3019eac3 | 4647 | &signature, &type_offset_in_tu); |
6caca83c | 4648 | |
1ce1cefd | 4649 | length = get_cu_length (&header); |
dee91e82 | 4650 | |
6caca83c | 4651 | /* Skip dummy type units. */ |
dee91e82 DE |
4652 | if (ptr >= info_ptr + length |
4653 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4654 | { |
1ce1cefd | 4655 | info_ptr += length; |
6caca83c CC |
4656 | continue; |
4657 | } | |
8b70b953 | 4658 | |
0349ea22 DE |
4659 | if (types_htab == NULL) |
4660 | { | |
4661 | if (dwo_file) | |
4662 | types_htab = allocate_dwo_unit_table (objfile); | |
4663 | else | |
4664 | types_htab = allocate_signatured_type_table (objfile); | |
4665 | } | |
4666 | ||
3019eac3 DE |
4667 | if (dwo_file) |
4668 | { | |
4669 | sig_type = NULL; | |
4670 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4671 | struct dwo_unit); | |
4672 | dwo_tu->dwo_file = dwo_file; | |
4673 | dwo_tu->signature = signature; | |
4674 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
8a0459fd | 4675 | dwo_tu->section = section; |
3019eac3 DE |
4676 | dwo_tu->offset = offset; |
4677 | dwo_tu->length = length; | |
4678 | } | |
4679 | else | |
4680 | { | |
4681 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4682 | The real type_offset is in the DWO file. */ | |
4683 | dwo_tu = NULL; | |
4684 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4685 | struct signatured_type); | |
4686 | sig_type->signature = signature; | |
4687 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4688 | sig_type->per_cu.objfile = objfile; | |
4689 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 4690 | sig_type->per_cu.section = section; |
3019eac3 DE |
4691 | sig_type->per_cu.offset = offset; |
4692 | sig_type->per_cu.length = length; | |
4693 | } | |
8b70b953 | 4694 | |
3019eac3 DE |
4695 | slot = htab_find_slot (types_htab, |
4696 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4697 | INSERT); | |
8b70b953 TT |
4698 | gdb_assert (slot != NULL); |
4699 | if (*slot != NULL) | |
4700 | { | |
3019eac3 DE |
4701 | sect_offset dup_offset; |
4702 | ||
4703 | if (dwo_file) | |
4704 | { | |
4705 | const struct dwo_unit *dup_tu = *slot; | |
4706 | ||
4707 | dup_offset = dup_tu->offset; | |
4708 | } | |
4709 | else | |
4710 | { | |
4711 | const struct signatured_type *dup_tu = *slot; | |
4712 | ||
4713 | dup_offset = dup_tu->per_cu.offset; | |
4714 | } | |
b3c8eb43 | 4715 | |
8b70b953 | 4716 | complaint (&symfile_complaints, |
c88ee1f0 | 4717 | _("debug type entry at offset 0x%x is duplicate to" |
4031ecc5 | 4718 | " the entry at offset 0x%x, signature %s"), |
3019eac3 | 4719 | offset.sect_off, dup_offset.sect_off, |
4031ecc5 | 4720 | hex_string (signature)); |
8b70b953 | 4721 | } |
3019eac3 | 4722 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4723 | |
73be47f5 | 4724 | if (dwarf2_read_debug > 1) |
4031ecc5 | 4725 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", |
b64f50a1 | 4726 | offset.sect_off, |
4031ecc5 | 4727 | hex_string (signature)); |
348e048f | 4728 | |
dee91e82 | 4729 | info_ptr += length; |
8b70b953 | 4730 | } |
348e048f DE |
4731 | } |
4732 | ||
3019eac3 DE |
4733 | return types_htab; |
4734 | } | |
4735 | ||
4736 | /* Create the hash table of all entries in the .debug_types section, | |
4737 | and initialize all_type_units. | |
4738 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4739 | otherwise non-zero. */ | |
4740 | ||
4741 | static int | |
4742 | create_all_type_units (struct objfile *objfile) | |
4743 | { | |
4744 | htab_t types_htab; | |
b4dd5633 | 4745 | struct signatured_type **iter; |
3019eac3 DE |
4746 | |
4747 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4748 | if (types_htab == NULL) | |
4749 | { | |
4750 | dwarf2_per_objfile->signatured_types = NULL; | |
4751 | return 0; | |
4752 | } | |
4753 | ||
348e048f DE |
4754 | dwarf2_per_objfile->signatured_types = types_htab; |
4755 | ||
6aa5f3a6 DE |
4756 | dwarf2_per_objfile->n_type_units |
4757 | = dwarf2_per_objfile->n_allocated_type_units | |
4758 | = htab_elements (types_htab); | |
d467dd73 | 4759 | dwarf2_per_objfile->all_type_units |
a2ce51a0 DE |
4760 | = xmalloc (dwarf2_per_objfile->n_type_units |
4761 | * sizeof (struct signatured_type *)); | |
d467dd73 DE |
4762 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4763 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4764 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4765 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4766 | |
348e048f DE |
4767 | return 1; |
4768 | } | |
4769 | ||
6aa5f3a6 DE |
4770 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
4771 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
4772 | Otherwise we find one. */ | |
4773 | ||
4774 | static struct signatured_type * | |
4775 | add_type_unit (ULONGEST sig, void **slot) | |
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 | ||
4781 | gdb_assert (n_type_units <= dwarf2_per_objfile->n_allocated_type_units); | |
4782 | ++n_type_units; | |
4783 | if (n_type_units > dwarf2_per_objfile->n_allocated_type_units) | |
4784 | { | |
4785 | if (dwarf2_per_objfile->n_allocated_type_units == 0) | |
4786 | dwarf2_per_objfile->n_allocated_type_units = 1; | |
4787 | dwarf2_per_objfile->n_allocated_type_units *= 2; | |
4788 | dwarf2_per_objfile->all_type_units | |
4789 | = xrealloc (dwarf2_per_objfile->all_type_units, | |
4790 | dwarf2_per_objfile->n_allocated_type_units | |
4791 | * sizeof (struct signatured_type *)); | |
4792 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
4793 | } | |
4794 | dwarf2_per_objfile->n_type_units = n_type_units; | |
4795 | ||
4796 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4797 | struct signatured_type); | |
4798 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
4799 | sig_type->signature = sig; | |
4800 | sig_type->per_cu.is_debug_types = 1; | |
4801 | if (dwarf2_per_objfile->using_index) | |
4802 | { | |
4803 | sig_type->per_cu.v.quick = | |
4804 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4805 | struct dwarf2_per_cu_quick_data); | |
4806 | } | |
4807 | ||
4808 | if (slot == NULL) | |
4809 | { | |
4810 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4811 | sig_type, INSERT); | |
4812 | } | |
4813 | gdb_assert (*slot == NULL); | |
4814 | *slot = sig_type; | |
4815 | /* The rest of sig_type must be filled in by the caller. */ | |
4816 | return sig_type; | |
4817 | } | |
4818 | ||
a2ce51a0 DE |
4819 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
4820 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
4821 | ||
4822 | static void | |
4823 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
4824 | struct signatured_type *sig_entry, | |
4825 | struct dwo_unit *dwo_entry) | |
4826 | { | |
7ee85ab1 | 4827 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
4828 | gdb_assert (! sig_entry->per_cu.queued); |
4829 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
4830 | if (dwarf2_per_objfile->using_index) |
4831 | { | |
4832 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 4833 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
4834 | } |
4835 | else | |
4836 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 DE |
4837 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
4838 | gdb_assert (sig_entry->type_offset_in_section.sect_off == 0); | |
4839 | gdb_assert (sig_entry->type_unit_group == NULL); | |
7ee85ab1 DE |
4840 | gdb_assert (sig_entry->dwo_unit == NULL); |
4841 | ||
4842 | sig_entry->per_cu.section = dwo_entry->section; | |
4843 | sig_entry->per_cu.offset = dwo_entry->offset; | |
4844 | sig_entry->per_cu.length = dwo_entry->length; | |
4845 | sig_entry->per_cu.reading_dwo_directly = 1; | |
4846 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
4847 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
4848 | sig_entry->dwo_unit = dwo_entry; | |
4849 | } | |
4850 | ||
4851 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
4852 | If we haven't read the TU yet, create the signatured_type data structure |
4853 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
4854 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
4855 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
4856 | containing that CU. Otherwise we could end up reading several other DWO | |
4857 | files (due to comdat folding) to process the transitive closure of all the | |
4858 | mentioned TUs, and that can be slow. The current DWO file will have every | |
4859 | type signature that it needs. | |
a2ce51a0 DE |
4860 | We only do this for .gdb_index because in the psymtab case we already have |
4861 | to read all the DWOs to build the type unit groups. */ | |
4862 | ||
4863 | static struct signatured_type * | |
4864 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4865 | { | |
4866 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4867 | struct dwo_file *dwo_file; | |
4868 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
4869 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 4870 | void **slot; |
a2ce51a0 DE |
4871 | |
4872 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4873 | ||
6aa5f3a6 DE |
4874 | /* If TU skeletons have been removed then we may not have read in any |
4875 | TUs yet. */ | |
4876 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4877 | { | |
4878 | dwarf2_per_objfile->signatured_types | |
4879 | = allocate_signatured_type_table (objfile); | |
4880 | } | |
a2ce51a0 DE |
4881 | |
4882 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
4883 | Use the global signatured_types array to do our own comdat-folding |
4884 | of types. If this is the first time we're reading this TU, and | |
4885 | the TU has an entry in .gdb_index, replace the recorded data from | |
4886 | .gdb_index with this TU. */ | |
a2ce51a0 | 4887 | |
a2ce51a0 | 4888 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
4889 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
4890 | &find_sig_entry, INSERT); | |
4891 | sig_entry = *slot; | |
7ee85ab1 DE |
4892 | |
4893 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
4894 | read. Don't reassign the global entry to point to this DWO if that's |
4895 | the case. Also note that if the TU is already being read, it may not | |
4896 | have come from a DWO, the program may be a mix of Fission-compiled | |
4897 | code and non-Fission-compiled code. */ | |
4898 | ||
4899 | /* Have we already tried to read this TU? | |
4900 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
4901 | needn't exist in the global table yet). */ | |
4902 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
4903 | return sig_entry; |
4904 | ||
6aa5f3a6 DE |
4905 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
4906 | dwo_unit of the TU itself. */ | |
4907 | dwo_file = cu->dwo_unit->dwo_file; | |
4908 | ||
a2ce51a0 DE |
4909 | /* Ok, this is the first time we're reading this TU. */ |
4910 | if (dwo_file->tus == NULL) | |
4911 | return NULL; | |
4912 | find_dwo_entry.signature = sig; | |
4913 | dwo_entry = htab_find (dwo_file->tus, &find_dwo_entry); | |
4914 | if (dwo_entry == NULL) | |
4915 | return NULL; | |
4916 | ||
6aa5f3a6 DE |
4917 | /* If the global table doesn't have an entry for this TU, add one. */ |
4918 | if (sig_entry == NULL) | |
4919 | sig_entry = add_type_unit (sig, slot); | |
4920 | ||
a2ce51a0 | 4921 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
89e63ee4 | 4922 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
4923 | return sig_entry; |
4924 | } | |
4925 | ||
a2ce51a0 DE |
4926 | /* Subroutine of lookup_signatured_type. |
4927 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
4928 | then try the DWP file. If the TU stub (skeleton) has been removed then |
4929 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
4930 | |
4931 | static struct signatured_type * | |
4932 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4933 | { | |
4934 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4935 | struct dwp_file *dwp_file = get_dwp_file (); | |
4936 | struct dwo_unit *dwo_entry; | |
4937 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 4938 | void **slot; |
a2ce51a0 DE |
4939 | |
4940 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4941 | gdb_assert (dwp_file != NULL); | |
4942 | ||
6aa5f3a6 DE |
4943 | /* If TU skeletons have been removed then we may not have read in any |
4944 | TUs yet. */ | |
4945 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 4946 | { |
6aa5f3a6 DE |
4947 | dwarf2_per_objfile->signatured_types |
4948 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
4949 | } |
4950 | ||
6aa5f3a6 DE |
4951 | find_sig_entry.signature = sig; |
4952 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4953 | &find_sig_entry, INSERT); | |
4954 | sig_entry = *slot; | |
4955 | ||
4956 | /* Have we already tried to read this TU? | |
4957 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
4958 | needn't exist in the global table yet). */ | |
4959 | if (sig_entry != NULL) | |
4960 | return sig_entry; | |
4961 | ||
a2ce51a0 DE |
4962 | if (dwp_file->tus == NULL) |
4963 | return NULL; | |
57d63ce2 DE |
4964 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
4965 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
4966 | if (dwo_entry == NULL) |
4967 | return NULL; | |
4968 | ||
6aa5f3a6 | 4969 | sig_entry = add_type_unit (sig, slot); |
a2ce51a0 DE |
4970 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
4971 | ||
a2ce51a0 DE |
4972 | return sig_entry; |
4973 | } | |
4974 | ||
380bca97 | 4975 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
4976 | Returns NULL if signature SIG is not present in the table. |
4977 | It is up to the caller to complain about this. */ | |
348e048f DE |
4978 | |
4979 | static struct signatured_type * | |
a2ce51a0 | 4980 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 4981 | { |
a2ce51a0 DE |
4982 | if (cu->dwo_unit |
4983 | && dwarf2_per_objfile->using_index) | |
4984 | { | |
4985 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
4986 | These cases require special processing. */ | |
4987 | if (get_dwp_file () == NULL) | |
4988 | return lookup_dwo_signatured_type (cu, sig); | |
4989 | else | |
4990 | return lookup_dwp_signatured_type (cu, sig); | |
4991 | } | |
4992 | else | |
4993 | { | |
4994 | struct signatured_type find_entry, *entry; | |
348e048f | 4995 | |
a2ce51a0 DE |
4996 | if (dwarf2_per_objfile->signatured_types == NULL) |
4997 | return NULL; | |
4998 | find_entry.signature = sig; | |
4999 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
5000 | return entry; | |
5001 | } | |
348e048f | 5002 | } |
42e7ad6c DE |
5003 | \f |
5004 | /* Low level DIE reading support. */ | |
348e048f | 5005 | |
d85a05f0 DJ |
5006 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
5007 | ||
5008 | static void | |
5009 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 5010 | struct dwarf2_cu *cu, |
3019eac3 DE |
5011 | struct dwarf2_section_info *section, |
5012 | struct dwo_file *dwo_file) | |
d85a05f0 | 5013 | { |
fceca515 | 5014 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 5015 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 5016 | reader->cu = cu; |
3019eac3 | 5017 | reader->dwo_file = dwo_file; |
dee91e82 DE |
5018 | reader->die_section = section; |
5019 | reader->buffer = section->buffer; | |
f664829e | 5020 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 5021 | reader->comp_dir = NULL; |
d85a05f0 DJ |
5022 | } |
5023 | ||
b0c7bfa9 DE |
5024 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
5025 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
5026 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
5027 | already. | |
5028 | ||
5029 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
5030 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
5031 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
5032 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
5033 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
5034 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
5035 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
5036 | are filled in with the info of the DIE from the DWO file. | |
5037 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
5038 | provided an abbrev table to use. | |
5039 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
5040 | ||
5041 | static int | |
5042 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
5043 | struct dwo_unit *dwo_unit, | |
5044 | int abbrev_table_provided, | |
5045 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 5046 | const char *stub_comp_dir, |
b0c7bfa9 | 5047 | struct die_reader_specs *result_reader, |
d521ce57 | 5048 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
5049 | struct die_info **result_comp_unit_die, |
5050 | int *result_has_children) | |
5051 | { | |
5052 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5053 | struct dwarf2_cu *cu = this_cu->cu; | |
5054 | struct dwarf2_section_info *section; | |
5055 | bfd *abfd; | |
d521ce57 | 5056 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
5057 | ULONGEST signature; /* Or dwo_id. */ |
5058 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
5059 | int i,num_extra_attrs; | |
5060 | struct dwarf2_section_info *dwo_abbrev_section; | |
5061 | struct attribute *attr; | |
5062 | struct die_info *comp_unit_die; | |
5063 | ||
b0aeadb3 DE |
5064 | /* At most one of these may be provided. */ |
5065 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 5066 | |
b0c7bfa9 DE |
5067 | /* These attributes aren't processed until later: |
5068 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
5069 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
5070 | referenced later. However, these attributes are found in the stub | |
5071 | which we won't have later. In order to not impose this complication | |
5072 | on the rest of the code, we read them here and copy them to the | |
5073 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
5074 | |
5075 | stmt_list = NULL; | |
5076 | low_pc = NULL; | |
5077 | high_pc = NULL; | |
5078 | ranges = NULL; | |
5079 | comp_dir = NULL; | |
5080 | ||
5081 | if (stub_comp_unit_die != NULL) | |
5082 | { | |
5083 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
5084 | DWO file. */ | |
5085 | if (! this_cu->is_debug_types) | |
5086 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
5087 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
5088 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
5089 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
5090 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
5091 | ||
5092 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
5093 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
5094 | cu->addr_base = 0; | |
5095 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
5096 | if (attr) | |
5097 | cu->addr_base = DW_UNSND (attr); | |
5098 | ||
5099 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
5100 | We need the value before we can process DW_AT_ranges. */ | |
5101 | cu->ranges_base = 0; | |
5102 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
5103 | if (attr) | |
5104 | cu->ranges_base = DW_UNSND (attr); | |
5105 | } | |
a2ce51a0 DE |
5106 | else if (stub_comp_dir != NULL) |
5107 | { | |
5108 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
5109 | comp_dir = (struct attribute *) | |
5110 | obstack_alloc (&cu->comp_unit_obstack, sizeof (*comp_dir)); | |
5111 | comp_dir->name = DW_AT_comp_dir; | |
5112 | comp_dir->form = DW_FORM_string; | |
5113 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
5114 | DW_STRING (comp_dir) = stub_comp_dir; | |
5115 | } | |
b0c7bfa9 DE |
5116 | |
5117 | /* Set up for reading the DWO CU/TU. */ | |
5118 | cu->dwo_unit = dwo_unit; | |
5119 | section = dwo_unit->section; | |
5120 | dwarf2_read_section (objfile, section); | |
a32a8923 | 5121 | abfd = get_section_bfd_owner (section); |
b0c7bfa9 DE |
5122 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
5123 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; | |
5124 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
5125 | ||
5126 | if (this_cu->is_debug_types) | |
5127 | { | |
5128 | ULONGEST header_signature; | |
5129 | cu_offset type_offset_in_tu; | |
5130 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; | |
5131 | ||
5132 | info_ptr = read_and_check_type_unit_head (&cu->header, section, | |
5133 | dwo_abbrev_section, | |
5134 | info_ptr, | |
5135 | &header_signature, | |
5136 | &type_offset_in_tu); | |
a2ce51a0 DE |
5137 | /* This is not an assert because it can be caused by bad debug info. */ |
5138 | if (sig_type->signature != header_signature) | |
5139 | { | |
5140 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
5141 | " TU at offset 0x%x [in module %s]"), | |
5142 | hex_string (sig_type->signature), | |
5143 | hex_string (header_signature), | |
5144 | dwo_unit->offset.sect_off, | |
5145 | bfd_get_filename (abfd)); | |
5146 | } | |
b0c7bfa9 DE |
5147 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
5148 | /* For DWOs coming from DWP files, we don't know the CU length | |
5149 | nor the type's offset in the TU until now. */ | |
5150 | dwo_unit->length = get_cu_length (&cu->header); | |
5151 | dwo_unit->type_offset_in_tu = type_offset_in_tu; | |
5152 | ||
5153 | /* Establish the type offset that can be used to lookup the type. | |
5154 | For DWO files, we don't know it until now. */ | |
5155 | sig_type->type_offset_in_section.sect_off = | |
5156 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
5157 | } | |
5158 | else | |
5159 | { | |
5160 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
5161 | dwo_abbrev_section, | |
5162 | info_ptr, 0); | |
5163 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
5164 | /* For DWOs coming from DWP files, we don't know the CU length | |
5165 | until now. */ | |
5166 | dwo_unit->length = get_cu_length (&cu->header); | |
5167 | } | |
5168 | ||
02142a6c DE |
5169 | /* Replace the CU's original abbrev table with the DWO's. |
5170 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
5171 | if (abbrev_table_provided) |
5172 | { | |
5173 | /* Don't free the provided abbrev table, the caller of | |
5174 | init_cutu_and_read_dies owns it. */ | |
5175 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5176 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
5177 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5178 | } | |
5179 | else | |
5180 | { | |
5181 | dwarf2_free_abbrev_table (cu); | |
5182 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5183 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
5184 | } |
5185 | ||
5186 | /* Read in the die, but leave space to copy over the attributes | |
5187 | from the stub. This has the benefit of simplifying the rest of | |
5188 | the code - all the work to maintain the illusion of a single | |
5189 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
5190 | num_extra_attrs = ((stmt_list != NULL) | |
5191 | + (low_pc != NULL) | |
5192 | + (high_pc != NULL) | |
5193 | + (ranges != NULL) | |
5194 | + (comp_dir != NULL)); | |
5195 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
5196 | result_has_children, num_extra_attrs); | |
5197 | ||
5198 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
5199 | comp_unit_die = *result_comp_unit_die; | |
5200 | i = comp_unit_die->num_attrs; | |
5201 | if (stmt_list != NULL) | |
5202 | comp_unit_die->attrs[i++] = *stmt_list; | |
5203 | if (low_pc != NULL) | |
5204 | comp_unit_die->attrs[i++] = *low_pc; | |
5205 | if (high_pc != NULL) | |
5206 | comp_unit_die->attrs[i++] = *high_pc; | |
5207 | if (ranges != NULL) | |
5208 | comp_unit_die->attrs[i++] = *ranges; | |
5209 | if (comp_dir != NULL) | |
5210 | comp_unit_die->attrs[i++] = *comp_dir; | |
5211 | comp_unit_die->num_attrs += num_extra_attrs; | |
5212 | ||
bf6af496 DE |
5213 | if (dwarf2_die_debug) |
5214 | { | |
5215 | fprintf_unfiltered (gdb_stdlog, | |
5216 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 5217 | get_section_name (section), |
bf6af496 DE |
5218 | (unsigned) (begin_info_ptr - section->buffer), |
5219 | bfd_get_filename (abfd)); | |
5220 | dump_die (comp_unit_die, dwarf2_die_debug); | |
5221 | } | |
5222 | ||
a2ce51a0 DE |
5223 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
5224 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
5225 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
5226 | to get it via circuitous means. Blech. */ | |
5227 | if (comp_dir != NULL) | |
5228 | result_reader->comp_dir = DW_STRING (comp_dir); | |
5229 | ||
b0c7bfa9 DE |
5230 | /* Skip dummy compilation units. */ |
5231 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
5232 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
5233 | return 0; | |
5234 | ||
5235 | *result_info_ptr = info_ptr; | |
5236 | return 1; | |
5237 | } | |
5238 | ||
5239 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
5240 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 5241 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
5242 | |
5243 | static struct dwo_unit * | |
5244 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
5245 | struct die_info *comp_unit_die) | |
5246 | { | |
5247 | struct dwarf2_cu *cu = this_cu->cu; | |
5248 | struct attribute *attr; | |
5249 | ULONGEST signature; | |
5250 | struct dwo_unit *dwo_unit; | |
5251 | const char *comp_dir, *dwo_name; | |
5252 | ||
a2ce51a0 DE |
5253 | gdb_assert (cu != NULL); |
5254 | ||
b0c7bfa9 DE |
5255 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
5256 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
5257 | gdb_assert (attr != NULL); | |
5258 | dwo_name = DW_STRING (attr); | |
5259 | comp_dir = NULL; | |
5260 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5261 | if (attr) | |
5262 | comp_dir = DW_STRING (attr); | |
5263 | ||
5264 | if (this_cu->is_debug_types) | |
5265 | { | |
5266 | struct signatured_type *sig_type; | |
5267 | ||
5268 | /* Since this_cu is the first member of struct signatured_type, | |
5269 | we can go from a pointer to one to a pointer to the other. */ | |
5270 | sig_type = (struct signatured_type *) this_cu; | |
5271 | signature = sig_type->signature; | |
5272 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
5273 | } | |
5274 | else | |
5275 | { | |
5276 | struct attribute *attr; | |
5277 | ||
5278 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
5279 | if (! attr) | |
5280 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
5281 | " [in module %s]"), | |
4262abfb | 5282 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
5283 | signature = DW_UNSND (attr); |
5284 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
5285 | signature); | |
5286 | } | |
5287 | ||
b0c7bfa9 DE |
5288 | return dwo_unit; |
5289 | } | |
5290 | ||
a2ce51a0 | 5291 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 DE |
5292 | See it for a description of the parameters. |
5293 | Read a TU directly from a DWO file, bypassing the stub. | |
5294 | ||
5295 | Note: This function could be a little bit simpler if we shared cleanups | |
5296 | with our caller, init_cutu_and_read_dies. That's generally a fragile thing | |
5297 | to do, so we keep this function self-contained. Or we could move this | |
5298 | into our caller, but it's complex enough already. */ | |
a2ce51a0 DE |
5299 | |
5300 | static void | |
6aa5f3a6 DE |
5301 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
5302 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
5303 | die_reader_func_ftype *die_reader_func, |
5304 | void *data) | |
5305 | { | |
5306 | struct dwarf2_cu *cu; | |
5307 | struct signatured_type *sig_type; | |
6aa5f3a6 | 5308 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
a2ce51a0 DE |
5309 | struct die_reader_specs reader; |
5310 | const gdb_byte *info_ptr; | |
5311 | struct die_info *comp_unit_die; | |
5312 | int has_children; | |
5313 | ||
5314 | /* Verify we can do the following downcast, and that we have the | |
5315 | data we need. */ | |
5316 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
5317 | sig_type = (struct signatured_type *) this_cu; | |
5318 | gdb_assert (sig_type->dwo_unit != NULL); | |
5319 | ||
5320 | cleanups = make_cleanup (null_cleanup, NULL); | |
5321 | ||
6aa5f3a6 DE |
5322 | if (use_existing_cu && this_cu->cu != NULL) |
5323 | { | |
5324 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
5325 | cu = this_cu->cu; | |
5326 | /* There's no need to do the rereading_dwo_cu handling that | |
5327 | init_cutu_and_read_dies does since we don't read the stub. */ | |
5328 | } | |
5329 | else | |
5330 | { | |
5331 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5332 | gdb_assert (this_cu->cu == NULL); | |
5333 | cu = xmalloc (sizeof (*cu)); | |
5334 | init_one_comp_unit (cu, this_cu); | |
5335 | /* If an error occurs while loading, release our storage. */ | |
5336 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
5337 | } | |
5338 | ||
5339 | /* A future optimization, if needed, would be to use an existing | |
5340 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
5341 | could share abbrev tables. */ | |
a2ce51a0 DE |
5342 | |
5343 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
5344 | 0 /* abbrev_table_provided */, | |
5345 | NULL /* stub_comp_unit_die */, | |
5346 | sig_type->dwo_unit->dwo_file->comp_dir, | |
5347 | &reader, &info_ptr, | |
5348 | &comp_unit_die, &has_children) == 0) | |
5349 | { | |
5350 | /* Dummy die. */ | |
5351 | do_cleanups (cleanups); | |
5352 | return; | |
5353 | } | |
5354 | ||
5355 | /* All the "real" work is done here. */ | |
5356 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5357 | ||
6aa5f3a6 | 5358 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
5359 | but the alternative is making the latter more complex. |
5360 | This function is only for the special case of using DWO files directly: | |
5361 | no point in overly complicating the general case just to handle this. */ | |
6aa5f3a6 | 5362 | if (free_cu_cleanup != NULL) |
a2ce51a0 | 5363 | { |
6aa5f3a6 DE |
5364 | if (keep) |
5365 | { | |
5366 | /* We've successfully allocated this compilation unit. Let our | |
5367 | caller clean it up when finished with it. */ | |
5368 | discard_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5369 | |
6aa5f3a6 DE |
5370 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5371 | So we have to manually free the abbrev table. */ | |
5372 | dwarf2_free_abbrev_table (cu); | |
a2ce51a0 | 5373 | |
6aa5f3a6 DE |
5374 | /* Link this CU into read_in_chain. */ |
5375 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5376 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5377 | } | |
5378 | else | |
5379 | do_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5380 | } |
a2ce51a0 DE |
5381 | |
5382 | do_cleanups (cleanups); | |
5383 | } | |
5384 | ||
fd820528 | 5385 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 5386 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 5387 | |
f4dc4d17 DE |
5388 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
5389 | Otherwise the table specified in the comp unit header is read in and used. | |
5390 | This is an optimization for when we already have the abbrev table. | |
5391 | ||
dee91e82 DE |
5392 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
5393 | Otherwise, a new CU is allocated with xmalloc. | |
5394 | ||
5395 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
5396 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
5397 | ||
5398 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 5399 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 5400 | |
70221824 | 5401 | static void |
fd820528 | 5402 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 5403 | struct abbrev_table *abbrev_table, |
fd820528 DE |
5404 | int use_existing_cu, int keep, |
5405 | die_reader_func_ftype *die_reader_func, | |
5406 | void *data) | |
c906108c | 5407 | { |
dee91e82 | 5408 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 5409 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5410 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5411 | struct dwarf2_cu *cu; |
d521ce57 | 5412 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 5413 | struct die_reader_specs reader; |
d85a05f0 | 5414 | struct die_info *comp_unit_die; |
dee91e82 | 5415 | int has_children; |
d85a05f0 | 5416 | struct attribute *attr; |
365156ad | 5417 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 5418 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 5419 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
5420 | /* Non-zero if CU currently points to a DWO file and we need to |
5421 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 5422 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 5423 | int rereading_dwo_cu = 0; |
c906108c | 5424 | |
09406207 DE |
5425 | if (dwarf2_die_debug) |
5426 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5427 | this_cu->is_debug_types ? "type" : "comp", | |
5428 | this_cu->offset.sect_off); | |
5429 | ||
dee91e82 DE |
5430 | if (use_existing_cu) |
5431 | gdb_assert (keep); | |
23745b47 | 5432 | |
a2ce51a0 DE |
5433 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
5434 | file (instead of going through the stub), short-circuit all of this. */ | |
5435 | if (this_cu->reading_dwo_directly) | |
5436 | { | |
5437 | /* Narrow down the scope of possibilities to have to understand. */ | |
5438 | gdb_assert (this_cu->is_debug_types); | |
5439 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
5440 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
5441 | die_reader_func, data); | |
a2ce51a0 DE |
5442 | return; |
5443 | } | |
5444 | ||
dee91e82 DE |
5445 | cleanups = make_cleanup (null_cleanup, NULL); |
5446 | ||
5447 | /* This is cheap if the section is already read in. */ | |
5448 | dwarf2_read_section (objfile, section); | |
5449 | ||
5450 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
5451 | |
5452 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
5453 | |
5454 | if (use_existing_cu && this_cu->cu != NULL) | |
5455 | { | |
5456 | cu = this_cu->cu; | |
42e7ad6c DE |
5457 | /* If this CU is from a DWO file we need to start over, we need to |
5458 | refetch the attributes from the skeleton CU. | |
5459 | This could be optimized by retrieving those attributes from when we | |
5460 | were here the first time: the previous comp_unit_die was stored in | |
5461 | comp_unit_obstack. But there's no data yet that we need this | |
5462 | optimization. */ | |
5463 | if (cu->dwo_unit != NULL) | |
5464 | rereading_dwo_cu = 1; | |
dee91e82 DE |
5465 | } |
5466 | else | |
5467 | { | |
5468 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5469 | gdb_assert (this_cu->cu == NULL); | |
dee91e82 DE |
5470 | cu = xmalloc (sizeof (*cu)); |
5471 | init_one_comp_unit (cu, this_cu); | |
dee91e82 | 5472 | /* If an error occurs while loading, release our storage. */ |
365156ad | 5473 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 5474 | } |
dee91e82 | 5475 | |
b0c7bfa9 | 5476 | /* Get the header. */ |
42e7ad6c DE |
5477 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
5478 | { | |
5479 | /* We already have the header, there's no need to read it in again. */ | |
5480 | info_ptr += cu->header.first_die_offset.cu_off; | |
5481 | } | |
5482 | else | |
5483 | { | |
3019eac3 | 5484 | if (this_cu->is_debug_types) |
dee91e82 DE |
5485 | { |
5486 | ULONGEST signature; | |
42e7ad6c | 5487 | cu_offset type_offset_in_tu; |
dee91e82 | 5488 | |
4bdcc0c1 DE |
5489 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
5490 | abbrev_section, info_ptr, | |
42e7ad6c DE |
5491 | &signature, |
5492 | &type_offset_in_tu); | |
dee91e82 | 5493 | |
42e7ad6c DE |
5494 | /* Since per_cu is the first member of struct signatured_type, |
5495 | we can go from a pointer to one to a pointer to the other. */ | |
5496 | sig_type = (struct signatured_type *) this_cu; | |
5497 | gdb_assert (sig_type->signature == signature); | |
5498 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
5499 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
5500 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
5501 | ||
42e7ad6c DE |
5502 | /* LENGTH has not been set yet for type units if we're |
5503 | using .gdb_index. */ | |
1ce1cefd | 5504 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
5505 | |
5506 | /* Establish the type offset that can be used to lookup the type. */ | |
5507 | sig_type->type_offset_in_section.sect_off = | |
5508 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
5509 | } |
5510 | else | |
5511 | { | |
4bdcc0c1 DE |
5512 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
5513 | abbrev_section, | |
5514 | info_ptr, 0); | |
dee91e82 DE |
5515 | |
5516 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 5517 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
5518 | } |
5519 | } | |
10b3939b | 5520 | |
6caca83c | 5521 | /* Skip dummy compilation units. */ |
dee91e82 | 5522 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
5523 | || peek_abbrev_code (abfd, info_ptr) == 0) |
5524 | { | |
dee91e82 | 5525 | do_cleanups (cleanups); |
21b2bd31 | 5526 | return; |
6caca83c CC |
5527 | } |
5528 | ||
433df2d4 DE |
5529 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
5530 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
5531 | done. Note that it's important that if the CU had an abbrev table |
5532 | on entry we don't free it when we're done: Somewhere up the call stack | |
5533 | it may be in use. */ | |
f4dc4d17 DE |
5534 | if (abbrev_table != NULL) |
5535 | { | |
5536 | gdb_assert (cu->abbrev_table == NULL); | |
5537 | gdb_assert (cu->header.abbrev_offset.sect_off | |
5538 | == abbrev_table->offset.sect_off); | |
5539 | cu->abbrev_table = abbrev_table; | |
5540 | } | |
5541 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 5542 | { |
4bdcc0c1 | 5543 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
5544 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5545 | } | |
42e7ad6c DE |
5546 | else if (rereading_dwo_cu) |
5547 | { | |
5548 | dwarf2_free_abbrev_table (cu); | |
5549 | dwarf2_read_abbrevs (cu, abbrev_section); | |
5550 | } | |
af703f96 | 5551 | |
dee91e82 | 5552 | /* Read the top level CU/TU die. */ |
3019eac3 | 5553 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 5554 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 5555 | |
b0c7bfa9 DE |
5556 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
5557 | from the DWO file. | |
5558 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
5559 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
5560 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5561 | if (attr) | |
5562 | { | |
3019eac3 | 5563 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 5564 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
5565 | |
5566 | if (has_children) | |
6a506a2d DE |
5567 | { |
5568 | complaint (&symfile_complaints, | |
5569 | _("compilation unit with DW_AT_GNU_dwo_name" | |
5570 | " has children (offset 0x%x) [in module %s]"), | |
5571 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
5572 | } | |
b0c7bfa9 | 5573 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 5574 | if (dwo_unit != NULL) |
3019eac3 | 5575 | { |
6a506a2d DE |
5576 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
5577 | abbrev_table != NULL, | |
a2ce51a0 | 5578 | comp_unit_die, NULL, |
6a506a2d DE |
5579 | &reader, &info_ptr, |
5580 | &dwo_comp_unit_die, &has_children) == 0) | |
5581 | { | |
5582 | /* Dummy die. */ | |
5583 | do_cleanups (cleanups); | |
5584 | return; | |
5585 | } | |
5586 | comp_unit_die = dwo_comp_unit_die; | |
5587 | } | |
5588 | else | |
5589 | { | |
5590 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
5591 | the stub. A complaint has already been logged. There's | |
5592 | not much more we can do except pass on the stub DIE to | |
5593 | die_reader_func. We don't want to throw an error on bad | |
5594 | debug info. */ | |
3019eac3 DE |
5595 | } |
5596 | } | |
5597 | ||
b0c7bfa9 | 5598 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
5599 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
5600 | ||
b0c7bfa9 | 5601 | /* Done, clean up. */ |
365156ad | 5602 | if (free_cu_cleanup != NULL) |
348e048f | 5603 | { |
365156ad TT |
5604 | if (keep) |
5605 | { | |
5606 | /* We've successfully allocated this compilation unit. Let our | |
5607 | caller clean it up when finished with it. */ | |
5608 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 5609 | |
365156ad TT |
5610 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5611 | So we have to manually free the abbrev table. */ | |
5612 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 5613 | |
365156ad TT |
5614 | /* Link this CU into read_in_chain. */ |
5615 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5616 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5617 | } | |
5618 | else | |
5619 | do_cleanups (free_cu_cleanup); | |
348e048f | 5620 | } |
365156ad TT |
5621 | |
5622 | do_cleanups (cleanups); | |
dee91e82 DE |
5623 | } |
5624 | ||
33e80786 DE |
5625 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
5626 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
5627 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
5628 | |
5629 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 5630 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
5631 | |
5632 | We fill in THIS_CU->length. | |
5633 | ||
5634 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
5635 | linker) then DIE_READER_FUNC will not get called. | |
5636 | ||
5637 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5638 | This is done in order to not leave THIS_CU->cu in a state where we have |
5639 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
5640 | |
5641 | static void | |
5642 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 5643 | struct dwo_file *dwo_file, |
dee91e82 DE |
5644 | die_reader_func_ftype *die_reader_func, |
5645 | void *data) | |
5646 | { | |
5647 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 5648 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5649 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 5650 | struct dwarf2_section_info *abbrev_section; |
dee91e82 | 5651 | struct dwarf2_cu cu; |
d521ce57 | 5652 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
5653 | struct die_reader_specs reader; |
5654 | struct cleanup *cleanups; | |
5655 | struct die_info *comp_unit_die; | |
5656 | int has_children; | |
5657 | ||
09406207 DE |
5658 | if (dwarf2_die_debug) |
5659 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5660 | this_cu->is_debug_types ? "type" : "comp", | |
5661 | this_cu->offset.sect_off); | |
5662 | ||
dee91e82 DE |
5663 | gdb_assert (this_cu->cu == NULL); |
5664 | ||
33e80786 DE |
5665 | abbrev_section = (dwo_file != NULL |
5666 | ? &dwo_file->sections.abbrev | |
5667 | : get_abbrev_section_for_cu (this_cu)); | |
5668 | ||
dee91e82 DE |
5669 | /* This is cheap if the section is already read in. */ |
5670 | dwarf2_read_section (objfile, section); | |
5671 | ||
5672 | init_one_comp_unit (&cu, this_cu); | |
5673 | ||
5674 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
5675 | ||
5676 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
5677 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
5678 | abbrev_section, info_ptr, | |
3019eac3 | 5679 | this_cu->is_debug_types); |
dee91e82 | 5680 | |
1ce1cefd | 5681 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
5682 | |
5683 | /* Skip dummy compilation units. */ | |
5684 | if (info_ptr >= begin_info_ptr + this_cu->length | |
5685 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 5686 | { |
dee91e82 | 5687 | do_cleanups (cleanups); |
21b2bd31 | 5688 | return; |
93311388 | 5689 | } |
72bf9492 | 5690 | |
dee91e82 DE |
5691 | dwarf2_read_abbrevs (&cu, abbrev_section); |
5692 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
5693 | ||
3019eac3 | 5694 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
5695 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
5696 | ||
5697 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5698 | ||
5699 | do_cleanups (cleanups); | |
5700 | } | |
5701 | ||
3019eac3 DE |
5702 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
5703 | does not lookup the specified DWO file. | |
5704 | This cannot be used to read DWO files. | |
dee91e82 DE |
5705 | |
5706 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5707 | This is done in order to not leave THIS_CU->cu in a state where we have |
5708 | to care whether it refers to the "main" CU or the DWO CU. | |
5709 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
5710 | |
5711 | static void | |
5712 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
5713 | die_reader_func_ftype *die_reader_func, | |
5714 | void *data) | |
5715 | { | |
33e80786 | 5716 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 5717 | } |
0018ea6f DE |
5718 | \f |
5719 | /* Type Unit Groups. | |
dee91e82 | 5720 | |
0018ea6f DE |
5721 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
5722 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
5723 | so that all types coming from the same compilation (.o file) are grouped | |
5724 | together. A future step could be to put the types in the same symtab as | |
5725 | the CU the types ultimately came from. */ | |
ff013f42 | 5726 | |
f4dc4d17 DE |
5727 | static hashval_t |
5728 | hash_type_unit_group (const void *item) | |
5729 | { | |
094b34ac | 5730 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 5731 | |
094b34ac | 5732 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5733 | } |
348e048f DE |
5734 | |
5735 | static int | |
f4dc4d17 | 5736 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5737 | { |
f4dc4d17 DE |
5738 | const struct type_unit_group *lhs = item_lhs; |
5739 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 5740 | |
094b34ac | 5741 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5742 | } |
348e048f | 5743 | |
f4dc4d17 DE |
5744 | /* Allocate a hash table for type unit groups. */ |
5745 | ||
5746 | static htab_t | |
5747 | allocate_type_unit_groups_table (void) | |
5748 | { | |
5749 | return htab_create_alloc_ex (3, | |
5750 | hash_type_unit_group, | |
5751 | eq_type_unit_group, | |
5752 | NULL, | |
5753 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5754 | hashtab_obstack_allocate, | |
5755 | dummy_obstack_deallocate); | |
5756 | } | |
dee91e82 | 5757 | |
f4dc4d17 DE |
5758 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5759 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5760 | of any one psymtab grow too big. */ | |
5761 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5762 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5763 | |
094b34ac | 5764 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5765 | Create the type_unit_group object used to hold one or more TUs. */ |
5766 | ||
5767 | static struct type_unit_group * | |
094b34ac | 5768 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5769 | { |
5770 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5771 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5772 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5773 | |
5774 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5775 | struct type_unit_group); | |
094b34ac | 5776 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 5777 | per_cu->objfile = objfile; |
f4dc4d17 | 5778 | |
094b34ac DE |
5779 | if (dwarf2_per_objfile->using_index) |
5780 | { | |
5781 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5782 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
5783 | } |
5784 | else | |
5785 | { | |
5786 | unsigned int line_offset = line_offset_struct.sect_off; | |
5787 | struct partial_symtab *pst; | |
5788 | char *name; | |
5789 | ||
5790 | /* Give the symtab a useful name for debug purposes. */ | |
5791 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5792 | name = xstrprintf ("<type_units_%d>", | |
5793 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5794 | else | |
5795 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5796 | ||
5797 | pst = create_partial_symtab (per_cu, name); | |
5798 | pst->anonymous = 1; | |
f4dc4d17 | 5799 | |
094b34ac DE |
5800 | xfree (name); |
5801 | } | |
f4dc4d17 | 5802 | |
094b34ac DE |
5803 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5804 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5805 | |
5806 | return tu_group; | |
5807 | } | |
5808 | ||
094b34ac DE |
5809 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5810 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5811 | |
5812 | static struct type_unit_group * | |
ff39bb5e | 5813 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
5814 | { |
5815 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5816 | struct type_unit_group *tu_group; | |
5817 | void **slot; | |
5818 | unsigned int line_offset; | |
5819 | struct type_unit_group type_unit_group_for_lookup; | |
5820 | ||
5821 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5822 | { | |
5823 | dwarf2_per_objfile->type_unit_groups = | |
5824 | allocate_type_unit_groups_table (); | |
5825 | } | |
5826 | ||
5827 | /* Do we need to create a new group, or can we use an existing one? */ | |
5828 | ||
5829 | if (stmt_list) | |
5830 | { | |
5831 | line_offset = DW_UNSND (stmt_list); | |
5832 | ++tu_stats->nr_symtab_sharers; | |
5833 | } | |
5834 | else | |
5835 | { | |
5836 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5837 | We can do various things here like create one group per TU or | |
5838 | spread them over multiple groups to split up the expansion work. | |
5839 | To avoid worst case scenarios (too many groups or too large groups) | |
5840 | we, umm, group them in bunches. */ | |
5841 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5842 | | (tu_stats->nr_stmt_less_type_units | |
5843 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5844 | ++tu_stats->nr_stmt_less_type_units; | |
5845 | } | |
5846 | ||
094b34ac DE |
5847 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5848 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5849 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5850 | &type_unit_group_for_lookup, INSERT); | |
5851 | if (*slot != NULL) | |
5852 | { | |
5853 | tu_group = *slot; | |
5854 | gdb_assert (tu_group != NULL); | |
5855 | } | |
5856 | else | |
5857 | { | |
5858 | sect_offset line_offset_struct; | |
5859 | ||
5860 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5861 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5862 | *slot = tu_group; |
5863 | ++tu_stats->nr_symtabs; | |
5864 | } | |
5865 | ||
5866 | return tu_group; | |
5867 | } | |
0018ea6f DE |
5868 | \f |
5869 | /* Partial symbol tables. */ | |
5870 | ||
5871 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5872 | ||
5873 | The caller must fill in the following details: | |
5874 | dirname, textlow, texthigh. */ | |
5875 | ||
5876 | static struct partial_symtab * | |
5877 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5878 | { | |
5879 | struct objfile *objfile = per_cu->objfile; | |
5880 | struct partial_symtab *pst; | |
5881 | ||
5882 | pst = start_psymtab_common (objfile, objfile->section_offsets, | |
5883 | name, 0, | |
5884 | objfile->global_psymbols.next, | |
5885 | objfile->static_psymbols.next); | |
5886 | ||
5887 | pst->psymtabs_addrmap_supported = 1; | |
5888 | ||
5889 | /* This is the glue that links PST into GDB's symbol API. */ | |
5890 | pst->read_symtab_private = per_cu; | |
5891 | pst->read_symtab = dwarf2_read_symtab; | |
5892 | per_cu->v.psymtab = pst; | |
5893 | ||
5894 | return pst; | |
5895 | } | |
5896 | ||
b93601f3 TT |
5897 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
5898 | type. */ | |
5899 | ||
5900 | struct process_psymtab_comp_unit_data | |
5901 | { | |
5902 | /* True if we are reading a DW_TAG_partial_unit. */ | |
5903 | ||
5904 | int want_partial_unit; | |
5905 | ||
5906 | /* The "pretend" language that is used if the CU doesn't declare a | |
5907 | language. */ | |
5908 | ||
5909 | enum language pretend_language; | |
5910 | }; | |
5911 | ||
0018ea6f DE |
5912 | /* die_reader_func for process_psymtab_comp_unit. */ |
5913 | ||
5914 | static void | |
5915 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 5916 | const gdb_byte *info_ptr, |
0018ea6f DE |
5917 | struct die_info *comp_unit_die, |
5918 | int has_children, | |
5919 | void *data) | |
5920 | { | |
5921 | struct dwarf2_cu *cu = reader->cu; | |
5922 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 5923 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f DE |
5924 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
5925 | struct attribute *attr; | |
5926 | CORE_ADDR baseaddr; | |
5927 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
5928 | struct partial_symtab *pst; | |
5929 | int has_pc_info; | |
5930 | const char *filename; | |
b93601f3 | 5931 | struct process_psymtab_comp_unit_data *info = data; |
0018ea6f | 5932 | |
b93601f3 | 5933 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
5934 | return; |
5935 | ||
5936 | gdb_assert (! per_cu->is_debug_types); | |
5937 | ||
b93601f3 | 5938 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
5939 | |
5940 | cu->list_in_scope = &file_symbols; | |
5941 | ||
5942 | /* Allocate a new partial symbol table structure. */ | |
5943 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
5944 | if (attr == NULL || !DW_STRING (attr)) | |
5945 | filename = ""; | |
5946 | else | |
5947 | filename = DW_STRING (attr); | |
5948 | ||
5949 | pst = create_partial_symtab (per_cu, filename); | |
5950 | ||
5951 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
5952 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5953 | if (attr != NULL) | |
5954 | pst->dirname = DW_STRING (attr); | |
5955 | ||
5956 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5957 | ||
5958 | dwarf2_find_base_address (comp_unit_die, cu); | |
5959 | ||
5960 | /* Possibly set the default values of LOWPC and HIGHPC from | |
5961 | `DW_AT_ranges'. */ | |
5962 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, | |
5963 | &best_highpc, cu, pst); | |
5964 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
5965 | /* Store the contiguous range if it is not empty; it can be empty for | |
5966 | CUs with no code. */ | |
5967 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
5968 | gdbarch_adjust_dwarf2_addr (gdbarch, |
5969 | best_lowpc + baseaddr), | |
5970 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
5971 | best_highpc + baseaddr) - 1, | |
5972 | pst); | |
0018ea6f DE |
5973 | |
5974 | /* Check if comp unit has_children. | |
5975 | If so, read the rest of the partial symbols from this comp unit. | |
5976 | If not, there's no more debug_info for this comp unit. */ | |
5977 | if (has_children) | |
5978 | { | |
5979 | struct partial_die_info *first_die; | |
5980 | CORE_ADDR lowpc, highpc; | |
5981 | ||
5982 | lowpc = ((CORE_ADDR) -1); | |
5983 | highpc = ((CORE_ADDR) 0); | |
5984 | ||
5985 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5986 | ||
5987 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
5988 | ! has_pc_info, cu); | |
5989 | ||
5990 | /* If we didn't find a lowpc, set it to highpc to avoid | |
5991 | complaints from `maint check'. */ | |
5992 | if (lowpc == ((CORE_ADDR) -1)) | |
5993 | lowpc = highpc; | |
5994 | ||
5995 | /* If the compilation unit didn't have an explicit address range, | |
5996 | then use the information extracted from its child dies. */ | |
5997 | if (! has_pc_info) | |
5998 | { | |
5999 | best_lowpc = lowpc; | |
6000 | best_highpc = highpc; | |
6001 | } | |
6002 | } | |
3e29f34a MR |
6003 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
6004 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f DE |
6005 | |
6006 | pst->n_global_syms = objfile->global_psymbols.next - | |
6007 | (objfile->global_psymbols.list + pst->globals_offset); | |
6008 | pst->n_static_syms = objfile->static_psymbols.next - | |
6009 | (objfile->static_psymbols.list + pst->statics_offset); | |
6010 | sort_pst_symbols (objfile, pst); | |
6011 | ||
6012 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
6013 | { | |
6014 | int i; | |
6015 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6016 | struct dwarf2_per_cu_data *iter; | |
6017 | ||
6018 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
6019 | post-pass. */ | |
6020 | pst->number_of_dependencies = len; | |
6021 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6022 | len * sizeof (struct symtab *)); | |
6023 | for (i = 0; | |
6024 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6025 | i, iter); | |
6026 | ++i) | |
6027 | pst->dependencies[i] = iter->v.psymtab; | |
6028 | ||
6029 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6030 | } | |
6031 | ||
6032 | /* Get the list of files included in the current compilation unit, | |
6033 | and build a psymtab for each of them. */ | |
6034 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
6035 | ||
6036 | if (dwarf2_read_debug) | |
6037 | { | |
6038 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6039 | ||
6040 | fprintf_unfiltered (gdb_stdlog, | |
6041 | "Psymtab for %s unit @0x%x: %s - %s" | |
6042 | ", %d global, %d static syms\n", | |
6043 | per_cu->is_debug_types ? "type" : "comp", | |
6044 | per_cu->offset.sect_off, | |
6045 | paddress (gdbarch, pst->textlow), | |
6046 | paddress (gdbarch, pst->texthigh), | |
6047 | pst->n_global_syms, pst->n_static_syms); | |
6048 | } | |
6049 | } | |
6050 | ||
6051 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6052 | Process compilation unit THIS_CU for a psymtab. */ | |
6053 | ||
6054 | static void | |
6055 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
6056 | int want_partial_unit, |
6057 | enum language pretend_language) | |
0018ea6f | 6058 | { |
b93601f3 TT |
6059 | struct process_psymtab_comp_unit_data info; |
6060 | ||
0018ea6f DE |
6061 | /* If this compilation unit was already read in, free the |
6062 | cached copy in order to read it in again. This is | |
6063 | necessary because we skipped some symbols when we first | |
6064 | read in the compilation unit (see load_partial_dies). | |
6065 | This problem could be avoided, but the benefit is unclear. */ | |
6066 | if (this_cu->cu != NULL) | |
6067 | free_one_cached_comp_unit (this_cu); | |
6068 | ||
6069 | gdb_assert (! this_cu->is_debug_types); | |
b93601f3 TT |
6070 | info.want_partial_unit = want_partial_unit; |
6071 | info.pretend_language = pretend_language; | |
0018ea6f DE |
6072 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
6073 | process_psymtab_comp_unit_reader, | |
b93601f3 | 6074 | &info); |
0018ea6f DE |
6075 | |
6076 | /* Age out any secondary CUs. */ | |
6077 | age_cached_comp_units (); | |
6078 | } | |
f4dc4d17 DE |
6079 | |
6080 | /* Reader function for build_type_psymtabs. */ | |
6081 | ||
6082 | static void | |
6083 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6084 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
6085 | struct die_info *type_unit_die, |
6086 | int has_children, | |
6087 | void *data) | |
6088 | { | |
6089 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6090 | struct dwarf2_cu *cu = reader->cu; | |
6091 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 6092 | struct signatured_type *sig_type; |
f4dc4d17 DE |
6093 | struct type_unit_group *tu_group; |
6094 | struct attribute *attr; | |
6095 | struct partial_die_info *first_die; | |
6096 | CORE_ADDR lowpc, highpc; | |
6097 | struct partial_symtab *pst; | |
6098 | ||
6099 | gdb_assert (data == NULL); | |
0186c6a7 DE |
6100 | gdb_assert (per_cu->is_debug_types); |
6101 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
6102 | |
6103 | if (! has_children) | |
6104 | return; | |
6105 | ||
6106 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 6107 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 6108 | |
0186c6a7 | 6109 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
6110 | |
6111 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
6112 | cu->list_in_scope = &file_symbols; | |
6113 | pst = create_partial_symtab (per_cu, ""); | |
6114 | pst->anonymous = 1; | |
6115 | ||
6116 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6117 | ||
6118 | lowpc = (CORE_ADDR) -1; | |
6119 | highpc = (CORE_ADDR) 0; | |
6120 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
6121 | ||
6122 | pst->n_global_syms = objfile->global_psymbols.next - | |
6123 | (objfile->global_psymbols.list + pst->globals_offset); | |
6124 | pst->n_static_syms = objfile->static_psymbols.next - | |
6125 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 6126 | sort_pst_symbols (objfile, pst); |
f4dc4d17 DE |
6127 | } |
6128 | ||
73051182 DE |
6129 | /* Struct used to sort TUs by their abbreviation table offset. */ |
6130 | ||
6131 | struct tu_abbrev_offset | |
6132 | { | |
6133 | struct signatured_type *sig_type; | |
6134 | sect_offset abbrev_offset; | |
6135 | }; | |
6136 | ||
6137 | /* Helper routine for build_type_psymtabs_1, passed to qsort. */ | |
6138 | ||
6139 | static int | |
6140 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
6141 | { | |
6142 | const struct tu_abbrev_offset * const *a = ap; | |
6143 | const struct tu_abbrev_offset * const *b = bp; | |
6144 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
6145 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
6146 | ||
6147 | return (aoff > boff) - (aoff < boff); | |
6148 | } | |
6149 | ||
6150 | /* Efficiently read all the type units. | |
6151 | This does the bulk of the work for build_type_psymtabs. | |
6152 | ||
6153 | The efficiency is because we sort TUs by the abbrev table they use and | |
6154 | only read each abbrev table once. In one program there are 200K TUs | |
6155 | sharing 8K abbrev tables. | |
6156 | ||
6157 | The main purpose of this function is to support building the | |
6158 | dwarf2_per_objfile->type_unit_groups table. | |
6159 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
6160 | can collapse the search space by grouping them by stmt_list. | |
6161 | The savings can be significant, in the same program from above the 200K TUs | |
6162 | share 8K stmt_list tables. | |
6163 | ||
6164 | FUNC is expected to call get_type_unit_group, which will create the | |
6165 | struct type_unit_group if necessary and add it to | |
6166 | dwarf2_per_objfile->type_unit_groups. */ | |
6167 | ||
6168 | static void | |
6169 | build_type_psymtabs_1 (void) | |
6170 | { | |
6171 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6172 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6173 | struct cleanup *cleanups; | |
6174 | struct abbrev_table *abbrev_table; | |
6175 | sect_offset abbrev_offset; | |
6176 | struct tu_abbrev_offset *sorted_by_abbrev; | |
6177 | struct type_unit_group **iter; | |
6178 | int i; | |
6179 | ||
6180 | /* It's up to the caller to not call us multiple times. */ | |
6181 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
6182 | ||
6183 | if (dwarf2_per_objfile->n_type_units == 0) | |
6184 | return; | |
6185 | ||
6186 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
6187 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
6188 | read each abbrev table in. | |
6189 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
6190 | This is simpler and efficient enough for now. | |
6191 | ||
6192 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
6193 | symtab to use). Typically TUs with the same abbrev offset have the same | |
6194 | stmt_list value too so in practice this should work well. | |
6195 | ||
6196 | The basic algorithm here is: | |
6197 | ||
6198 | sort TUs by abbrev table | |
6199 | for each TU with same abbrev table: | |
6200 | read abbrev table if first user | |
6201 | read TU top level DIE | |
6202 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
6203 | call FUNC */ | |
6204 | ||
6205 | if (dwarf2_read_debug) | |
6206 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); | |
6207 | ||
6208 | /* Sort in a separate table to maintain the order of all_type_units | |
6209 | for .gdb_index: TU indices directly index all_type_units. */ | |
6210 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
6211 | dwarf2_per_objfile->n_type_units); | |
6212 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6213 | { | |
6214 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
6215 | ||
6216 | sorted_by_abbrev[i].sig_type = sig_type; | |
6217 | sorted_by_abbrev[i].abbrev_offset = | |
6218 | read_abbrev_offset (sig_type->per_cu.section, | |
6219 | sig_type->per_cu.offset); | |
6220 | } | |
6221 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
6222 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
6223 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
6224 | ||
6225 | abbrev_offset.sect_off = ~(unsigned) 0; | |
6226 | abbrev_table = NULL; | |
6227 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
6228 | ||
6229 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6230 | { | |
6231 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
6232 | ||
6233 | /* Switch to the next abbrev table if necessary. */ | |
6234 | if (abbrev_table == NULL | |
6235 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
6236 | { | |
6237 | if (abbrev_table != NULL) | |
6238 | { | |
6239 | abbrev_table_free (abbrev_table); | |
6240 | /* Reset to NULL in case abbrev_table_read_table throws | |
6241 | an error: abbrev_table_free_cleanup will get called. */ | |
6242 | abbrev_table = NULL; | |
6243 | } | |
6244 | abbrev_offset = tu->abbrev_offset; | |
6245 | abbrev_table = | |
6246 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
6247 | abbrev_offset); | |
6248 | ++tu_stats->nr_uniq_abbrev_tables; | |
6249 | } | |
6250 | ||
6251 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
6252 | build_type_psymtabs_reader, NULL); | |
6253 | } | |
6254 | ||
73051182 | 6255 | do_cleanups (cleanups); |
6aa5f3a6 | 6256 | } |
73051182 | 6257 | |
6aa5f3a6 DE |
6258 | /* Print collected type unit statistics. */ |
6259 | ||
6260 | static void | |
6261 | print_tu_stats (void) | |
6262 | { | |
6263 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6264 | ||
6265 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
6266 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
6267 | dwarf2_per_objfile->n_type_units); | |
6268 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
6269 | tu_stats->nr_uniq_abbrev_tables); | |
6270 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
6271 | tu_stats->nr_symtabs); | |
6272 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
6273 | tu_stats->nr_symtab_sharers); | |
6274 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
6275 | tu_stats->nr_stmt_less_type_units); | |
6276 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
6277 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
6278 | } |
6279 | ||
f4dc4d17 DE |
6280 | /* Traversal function for build_type_psymtabs. */ |
6281 | ||
6282 | static int | |
6283 | build_type_psymtab_dependencies (void **slot, void *info) | |
6284 | { | |
6285 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6286 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 6287 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 6288 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
6289 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
6290 | struct signatured_type *iter; | |
f4dc4d17 DE |
6291 | int i; |
6292 | ||
6293 | gdb_assert (len > 0); | |
0186c6a7 | 6294 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
6295 | |
6296 | pst->number_of_dependencies = len; | |
6297 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6298 | len * sizeof (struct psymtab *)); | |
6299 | for (i = 0; | |
0186c6a7 | 6300 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
6301 | ++i) |
6302 | { | |
0186c6a7 DE |
6303 | gdb_assert (iter->per_cu.is_debug_types); |
6304 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 6305 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
6306 | } |
6307 | ||
0186c6a7 | 6308 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
6309 | |
6310 | return 1; | |
6311 | } | |
6312 | ||
6313 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6314 | Build partial symbol tables for the .debug_types comp-units. */ | |
6315 | ||
6316 | static void | |
6317 | build_type_psymtabs (struct objfile *objfile) | |
6318 | { | |
0e50663e | 6319 | if (! create_all_type_units (objfile)) |
348e048f DE |
6320 | return; |
6321 | ||
73051182 | 6322 | build_type_psymtabs_1 (); |
6aa5f3a6 | 6323 | } |
f4dc4d17 | 6324 | |
6aa5f3a6 DE |
6325 | /* Traversal function for process_skeletonless_type_unit. |
6326 | Read a TU in a DWO file and build partial symbols for it. */ | |
6327 | ||
6328 | static int | |
6329 | process_skeletonless_type_unit (void **slot, void *info) | |
6330 | { | |
6331 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
6332 | struct objfile *objfile = info; | |
6333 | struct signatured_type find_entry, *entry; | |
6334 | ||
6335 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
6336 | ||
6337 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6338 | { | |
6339 | dwarf2_per_objfile->signatured_types | |
6340 | = allocate_signatured_type_table (objfile); | |
6341 | } | |
6342 | ||
6343 | find_entry.signature = dwo_unit->signature; | |
6344 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
6345 | INSERT); | |
6346 | /* If we've already seen this type there's nothing to do. What's happening | |
6347 | is we're doing our own version of comdat-folding here. */ | |
6348 | if (*slot != NULL) | |
6349 | return 1; | |
6350 | ||
6351 | /* This does the job that create_all_type_units would have done for | |
6352 | this TU. */ | |
6353 | entry = add_type_unit (dwo_unit->signature, slot); | |
6354 | fill_in_sig_entry_from_dwo_entry (objfile, entry, dwo_unit); | |
6355 | *slot = entry; | |
6356 | ||
6357 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6358 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
6359 | build_type_psymtabs_reader, NULL); | |
6360 | ||
6361 | return 1; | |
6362 | } | |
6363 | ||
6364 | /* Traversal function for process_skeletonless_type_units. */ | |
6365 | ||
6366 | static int | |
6367 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
6368 | { | |
6369 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
6370 | ||
6371 | if (dwo_file->tus != NULL) | |
6372 | { | |
6373 | htab_traverse_noresize (dwo_file->tus, | |
6374 | process_skeletonless_type_unit, info); | |
6375 | } | |
6376 | ||
6377 | return 1; | |
6378 | } | |
6379 | ||
6380 | /* Scan all TUs of DWO files, verifying we've processed them. | |
6381 | This is needed in case a TU was emitted without its skeleton. | |
6382 | Note: This can't be done until we know what all the DWO files are. */ | |
6383 | ||
6384 | static void | |
6385 | process_skeletonless_type_units (struct objfile *objfile) | |
6386 | { | |
6387 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
6388 | if (get_dwp_file () == NULL | |
6389 | && dwarf2_per_objfile->dwo_files != NULL) | |
6390 | { | |
6391 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
6392 | process_dwo_file_for_skeletonless_type_units, | |
6393 | objfile); | |
6394 | } | |
348e048f DE |
6395 | } |
6396 | ||
60606b2c TT |
6397 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
6398 | ||
6399 | static void | |
6400 | psymtabs_addrmap_cleanup (void *o) | |
6401 | { | |
6402 | struct objfile *objfile = o; | |
ec61707d | 6403 | |
60606b2c TT |
6404 | objfile->psymtabs_addrmap = NULL; |
6405 | } | |
6406 | ||
95554aad TT |
6407 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
6408 | ||
6409 | static void | |
6410 | set_partial_user (struct objfile *objfile) | |
6411 | { | |
6412 | int i; | |
6413 | ||
6414 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
6415 | { | |
8832e7e3 | 6416 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
95554aad TT |
6417 | struct partial_symtab *pst = per_cu->v.psymtab; |
6418 | int j; | |
6419 | ||
36586728 TT |
6420 | if (pst == NULL) |
6421 | continue; | |
6422 | ||
95554aad TT |
6423 | for (j = 0; j < pst->number_of_dependencies; ++j) |
6424 | { | |
6425 | /* Set the 'user' field only if it is not already set. */ | |
6426 | if (pst->dependencies[j]->user == NULL) | |
6427 | pst->dependencies[j]->user = pst; | |
6428 | } | |
6429 | } | |
6430 | } | |
6431 | ||
93311388 DE |
6432 | /* Build the partial symbol table by doing a quick pass through the |
6433 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 6434 | |
93311388 | 6435 | static void |
c67a9c90 | 6436 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 6437 | { |
60606b2c TT |
6438 | struct cleanup *back_to, *addrmap_cleanup; |
6439 | struct obstack temp_obstack; | |
21b2bd31 | 6440 | int i; |
93311388 | 6441 | |
45cfd468 DE |
6442 | if (dwarf2_read_debug) |
6443 | { | |
6444 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 6445 | objfile_name (objfile)); |
45cfd468 DE |
6446 | } |
6447 | ||
98bfdba5 PA |
6448 | dwarf2_per_objfile->reading_partial_symbols = 1; |
6449 | ||
be391dca | 6450 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 6451 | |
93311388 DE |
6452 | /* Any cached compilation units will be linked by the per-objfile |
6453 | read_in_chain. Make sure to free them when we're done. */ | |
6454 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 6455 | |
348e048f DE |
6456 | build_type_psymtabs (objfile); |
6457 | ||
93311388 | 6458 | create_all_comp_units (objfile); |
c906108c | 6459 | |
60606b2c TT |
6460 | /* Create a temporary address map on a temporary obstack. We later |
6461 | copy this to the final obstack. */ | |
6462 | obstack_init (&temp_obstack); | |
6463 | make_cleanup_obstack_free (&temp_obstack); | |
6464 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
6465 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 6466 | |
21b2bd31 | 6467 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 6468 | { |
8832e7e3 | 6469 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
aaa75496 | 6470 | |
b93601f3 | 6471 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 6472 | } |
ff013f42 | 6473 | |
6aa5f3a6 DE |
6474 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
6475 | process_skeletonless_type_units (objfile); | |
6476 | ||
6477 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
6478 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
6479 | { | |
6480 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
6481 | build_type_psymtab_dependencies, NULL); | |
6482 | } | |
6483 | ||
6484 | if (dwarf2_read_debug) | |
6485 | print_tu_stats (); | |
6486 | ||
95554aad TT |
6487 | set_partial_user (objfile); |
6488 | ||
ff013f42 JK |
6489 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
6490 | &objfile->objfile_obstack); | |
60606b2c | 6491 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 6492 | |
ae038cb0 | 6493 | do_cleanups (back_to); |
45cfd468 DE |
6494 | |
6495 | if (dwarf2_read_debug) | |
6496 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
4262abfb | 6497 | objfile_name (objfile)); |
ae038cb0 DJ |
6498 | } |
6499 | ||
3019eac3 | 6500 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
6501 | |
6502 | static void | |
dee91e82 | 6503 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 6504 | const gdb_byte *info_ptr, |
dee91e82 DE |
6505 | struct die_info *comp_unit_die, |
6506 | int has_children, | |
6507 | void *data) | |
ae038cb0 | 6508 | { |
dee91e82 | 6509 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 6510 | |
95554aad | 6511 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 6512 | |
ae038cb0 DJ |
6513 | /* Check if comp unit has_children. |
6514 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 6515 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 6516 | if (has_children) |
dee91e82 DE |
6517 | load_partial_dies (reader, info_ptr, 0); |
6518 | } | |
98bfdba5 | 6519 | |
dee91e82 DE |
6520 | /* Load the partial DIEs for a secondary CU into memory. |
6521 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 6522 | |
dee91e82 DE |
6523 | static void |
6524 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
6525 | { | |
f4dc4d17 DE |
6526 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6527 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
6528 | } |
6529 | ||
ae038cb0 | 6530 | static void |
36586728 TT |
6531 | read_comp_units_from_section (struct objfile *objfile, |
6532 | struct dwarf2_section_info *section, | |
6533 | unsigned int is_dwz, | |
6534 | int *n_allocated, | |
6535 | int *n_comp_units, | |
6536 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 6537 | { |
d521ce57 | 6538 | const gdb_byte *info_ptr; |
a32a8923 | 6539 | bfd *abfd = get_section_bfd_owner (section); |
be391dca | 6540 | |
bf6af496 DE |
6541 | if (dwarf2_read_debug) |
6542 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", | |
a32a8923 DE |
6543 | get_section_name (section), |
6544 | get_section_file_name (section)); | |
bf6af496 | 6545 | |
36586728 | 6546 | dwarf2_read_section (objfile, section); |
ae038cb0 | 6547 | |
36586728 | 6548 | info_ptr = section->buffer; |
6e70227d | 6549 | |
36586728 | 6550 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 6551 | { |
c764a876 | 6552 | unsigned int length, initial_length_size; |
ae038cb0 | 6553 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 6554 | sect_offset offset; |
ae038cb0 | 6555 | |
36586728 | 6556 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
6557 | |
6558 | /* Read just enough information to find out where the next | |
6559 | compilation unit is. */ | |
36586728 | 6560 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
6561 | |
6562 | /* Save the compilation unit for later lookup. */ | |
6563 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
6564 | sizeof (struct dwarf2_per_cu_data)); | |
6565 | memset (this_cu, 0, sizeof (*this_cu)); | |
6566 | this_cu->offset = offset; | |
c764a876 | 6567 | this_cu->length = length + initial_length_size; |
36586728 | 6568 | this_cu->is_dwz = is_dwz; |
9291a0cd | 6569 | this_cu->objfile = objfile; |
8a0459fd | 6570 | this_cu->section = section; |
ae038cb0 | 6571 | |
36586728 | 6572 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 6573 | { |
36586728 TT |
6574 | *n_allocated *= 2; |
6575 | *all_comp_units = xrealloc (*all_comp_units, | |
6576 | *n_allocated | |
6577 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 6578 | } |
36586728 TT |
6579 | (*all_comp_units)[*n_comp_units] = this_cu; |
6580 | ++*n_comp_units; | |
ae038cb0 DJ |
6581 | |
6582 | info_ptr = info_ptr + this_cu->length; | |
6583 | } | |
36586728 TT |
6584 | } |
6585 | ||
6586 | /* Create a list of all compilation units in OBJFILE. | |
6587 | This is only done for -readnow and building partial symtabs. */ | |
6588 | ||
6589 | static void | |
6590 | create_all_comp_units (struct objfile *objfile) | |
6591 | { | |
6592 | int n_allocated; | |
6593 | int n_comp_units; | |
6594 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 6595 | struct dwz_file *dwz; |
36586728 TT |
6596 | |
6597 | n_comp_units = 0; | |
6598 | n_allocated = 10; | |
6599 | all_comp_units = xmalloc (n_allocated | |
6600 | * sizeof (struct dwarf2_per_cu_data *)); | |
6601 | ||
6602 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
6603 | &n_allocated, &n_comp_units, &all_comp_units); | |
6604 | ||
4db1a1dc TT |
6605 | dwz = dwarf2_get_dwz_file (); |
6606 | if (dwz != NULL) | |
6607 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
6608 | &n_allocated, &n_comp_units, | |
6609 | &all_comp_units); | |
ae038cb0 DJ |
6610 | |
6611 | dwarf2_per_objfile->all_comp_units | |
6612 | = obstack_alloc (&objfile->objfile_obstack, | |
6613 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6614 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
6615 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6616 | xfree (all_comp_units); | |
6617 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
6618 | } |
6619 | ||
5734ee8b | 6620 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 6621 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 6622 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
6623 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
6624 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 6625 | |
72bf9492 DJ |
6626 | static void |
6627 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
6628 | CORE_ADDR *highpc, int set_addrmap, |
6629 | struct dwarf2_cu *cu) | |
c906108c | 6630 | { |
72bf9492 | 6631 | struct partial_die_info *pdi; |
c906108c | 6632 | |
91c24f0a DC |
6633 | /* Now, march along the PDI's, descending into ones which have |
6634 | interesting children but skipping the children of the other ones, | |
6635 | until we reach the end of the compilation unit. */ | |
c906108c | 6636 | |
72bf9492 | 6637 | pdi = first_die; |
91c24f0a | 6638 | |
72bf9492 DJ |
6639 | while (pdi != NULL) |
6640 | { | |
6641 | fixup_partial_die (pdi, cu); | |
c906108c | 6642 | |
f55ee35c | 6643 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
6644 | children, so we need to look at them. Ditto for anonymous |
6645 | enums. */ | |
933c6fe4 | 6646 | |
72bf9492 | 6647 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
6648 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
6649 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 6650 | { |
72bf9492 | 6651 | switch (pdi->tag) |
c906108c SS |
6652 | { |
6653 | case DW_TAG_subprogram: | |
cdc07690 | 6654 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 6655 | break; |
72929c62 | 6656 | case DW_TAG_constant: |
c906108c SS |
6657 | case DW_TAG_variable: |
6658 | case DW_TAG_typedef: | |
91c24f0a | 6659 | case DW_TAG_union_type: |
72bf9492 | 6660 | if (!pdi->is_declaration) |
63d06c5c | 6661 | { |
72bf9492 | 6662 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
6663 | } |
6664 | break; | |
c906108c | 6665 | case DW_TAG_class_type: |
680b30c7 | 6666 | case DW_TAG_interface_type: |
c906108c | 6667 | case DW_TAG_structure_type: |
72bf9492 | 6668 | if (!pdi->is_declaration) |
c906108c | 6669 | { |
72bf9492 | 6670 | add_partial_symbol (pdi, cu); |
c906108c SS |
6671 | } |
6672 | break; | |
91c24f0a | 6673 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
6674 | if (!pdi->is_declaration) |
6675 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
6676 | break; |
6677 | case DW_TAG_base_type: | |
a02abb62 | 6678 | case DW_TAG_subrange_type: |
c906108c | 6679 | /* File scope base type definitions are added to the partial |
c5aa993b | 6680 | symbol table. */ |
72bf9492 | 6681 | add_partial_symbol (pdi, cu); |
c906108c | 6682 | break; |
d9fa45fe | 6683 | case DW_TAG_namespace: |
cdc07690 | 6684 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 6685 | break; |
5d7cb8df | 6686 | case DW_TAG_module: |
cdc07690 | 6687 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 6688 | break; |
95554aad TT |
6689 | case DW_TAG_imported_unit: |
6690 | { | |
6691 | struct dwarf2_per_cu_data *per_cu; | |
6692 | ||
f4dc4d17 DE |
6693 | /* For now we don't handle imported units in type units. */ |
6694 | if (cu->per_cu->is_debug_types) | |
6695 | { | |
6696 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6697 | " supported in type units [in module %s]"), | |
4262abfb | 6698 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
6699 | } |
6700 | ||
95554aad | 6701 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 6702 | pdi->is_dwz, |
95554aad TT |
6703 | cu->objfile); |
6704 | ||
6705 | /* Go read the partial unit, if needed. */ | |
6706 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 6707 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 6708 | |
f4dc4d17 | 6709 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 6710 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
6711 | } |
6712 | break; | |
74921315 KS |
6713 | case DW_TAG_imported_declaration: |
6714 | add_partial_symbol (pdi, cu); | |
6715 | break; | |
c906108c SS |
6716 | default: |
6717 | break; | |
6718 | } | |
6719 | } | |
6720 | ||
72bf9492 DJ |
6721 | /* If the die has a sibling, skip to the sibling. */ |
6722 | ||
6723 | pdi = pdi->die_sibling; | |
6724 | } | |
6725 | } | |
6726 | ||
6727 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 6728 | |
72bf9492 | 6729 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
6730 | name is concatenated with "::" and the partial DIE's name. For |
6731 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
6732 | Enumerators are an exception; they use the scope of their parent |
6733 | enumeration type, i.e. the name of the enumeration type is not | |
6734 | prepended to the enumerator. | |
91c24f0a | 6735 | |
72bf9492 DJ |
6736 | There are two complexities. One is DW_AT_specification; in this |
6737 | case "parent" means the parent of the target of the specification, | |
6738 | instead of the direct parent of the DIE. The other is compilers | |
6739 | which do not emit DW_TAG_namespace; in this case we try to guess | |
6740 | the fully qualified name of structure types from their members' | |
6741 | linkage names. This must be done using the DIE's children rather | |
6742 | than the children of any DW_AT_specification target. We only need | |
6743 | to do this for structures at the top level, i.e. if the target of | |
6744 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
6745 | have a parent. */ | |
6746 | ||
6747 | /* Compute the scope prefix associated with PDI's parent, in | |
6748 | compilation unit CU. The result will be allocated on CU's | |
6749 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
6750 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 6751 | static const char * |
72bf9492 DJ |
6752 | partial_die_parent_scope (struct partial_die_info *pdi, |
6753 | struct dwarf2_cu *cu) | |
6754 | { | |
15d034d0 | 6755 | const char *grandparent_scope; |
72bf9492 | 6756 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 6757 | |
72bf9492 DJ |
6758 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
6759 | then this means the parent of the specification DIE. */ | |
6760 | ||
6761 | real_pdi = pdi; | |
72bf9492 | 6762 | while (real_pdi->has_specification) |
36586728 TT |
6763 | real_pdi = find_partial_die (real_pdi->spec_offset, |
6764 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
6765 | |
6766 | parent = real_pdi->die_parent; | |
6767 | if (parent == NULL) | |
6768 | return NULL; | |
6769 | ||
6770 | if (parent->scope_set) | |
6771 | return parent->scope; | |
6772 | ||
6773 | fixup_partial_die (parent, cu); | |
6774 | ||
10b3939b | 6775 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 6776 | |
acebe513 UW |
6777 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
6778 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
6779 | Work around this problem here. */ | |
6780 | if (cu->language == language_cplus | |
6e70227d | 6781 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
6782 | && strcmp (parent->name, "::") == 0 |
6783 | && grandparent_scope == NULL) | |
6784 | { | |
6785 | parent->scope = NULL; | |
6786 | parent->scope_set = 1; | |
6787 | return NULL; | |
6788 | } | |
6789 | ||
9c6c53f7 SA |
6790 | if (pdi->tag == DW_TAG_enumerator) |
6791 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
6792 | parent->scope = grandparent_scope; | |
6793 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 6794 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
6795 | || parent->tag == DW_TAG_structure_type |
6796 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 6797 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
6798 | || parent->tag == DW_TAG_union_type |
6799 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
6800 | { |
6801 | if (grandparent_scope == NULL) | |
6802 | parent->scope = parent->name; | |
6803 | else | |
3e43a32a MS |
6804 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
6805 | grandparent_scope, | |
f55ee35c | 6806 | parent->name, 0, cu); |
72bf9492 | 6807 | } |
72bf9492 DJ |
6808 | else |
6809 | { | |
6810 | /* FIXME drow/2004-04-01: What should we be doing with | |
6811 | function-local names? For partial symbols, we should probably be | |
6812 | ignoring them. */ | |
6813 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6814 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 6815 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 6816 | parent->scope = grandparent_scope; |
c906108c SS |
6817 | } |
6818 | ||
72bf9492 DJ |
6819 | parent->scope_set = 1; |
6820 | return parent->scope; | |
6821 | } | |
6822 | ||
6823 | /* Return the fully scoped name associated with PDI, from compilation unit | |
6824 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 6825 | |
72bf9492 DJ |
6826 | static char * |
6827 | partial_die_full_name (struct partial_die_info *pdi, | |
6828 | struct dwarf2_cu *cu) | |
6829 | { | |
15d034d0 | 6830 | const char *parent_scope; |
72bf9492 | 6831 | |
98bfdba5 PA |
6832 | /* If this is a template instantiation, we can not work out the |
6833 | template arguments from partial DIEs. So, unfortunately, we have | |
6834 | to go through the full DIEs. At least any work we do building | |
6835 | types here will be reused if full symbols are loaded later. */ | |
6836 | if (pdi->has_template_arguments) | |
6837 | { | |
6838 | fixup_partial_die (pdi, cu); | |
6839 | ||
6840 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
6841 | { | |
6842 | struct die_info *die; | |
6843 | struct attribute attr; | |
6844 | struct dwarf2_cu *ref_cu = cu; | |
6845 | ||
b64f50a1 | 6846 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
6847 | attr.name = 0; |
6848 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 6849 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
6850 | die = follow_die_ref (NULL, &attr, &ref_cu); |
6851 | ||
6852 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
6853 | } | |
6854 | } | |
6855 | ||
72bf9492 DJ |
6856 | parent_scope = partial_die_parent_scope (pdi, cu); |
6857 | if (parent_scope == NULL) | |
6858 | return NULL; | |
6859 | else | |
f55ee35c | 6860 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
6861 | } |
6862 | ||
6863 | static void | |
72bf9492 | 6864 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 6865 | { |
e7c27a73 | 6866 | struct objfile *objfile = cu->objfile; |
3e29f34a | 6867 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 6868 | CORE_ADDR addr = 0; |
15d034d0 | 6869 | const char *actual_name = NULL; |
e142c38c | 6870 | CORE_ADDR baseaddr; |
15d034d0 | 6871 | char *built_actual_name; |
e142c38c DJ |
6872 | |
6873 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6874 | |
15d034d0 TT |
6875 | built_actual_name = partial_die_full_name (pdi, cu); |
6876 | if (built_actual_name != NULL) | |
6877 | actual_name = built_actual_name; | |
63d06c5c | 6878 | |
72bf9492 DJ |
6879 | if (actual_name == NULL) |
6880 | actual_name = pdi->name; | |
6881 | ||
c906108c SS |
6882 | switch (pdi->tag) |
6883 | { | |
6884 | case DW_TAG_subprogram: | |
3e29f34a | 6885 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 6886 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 6887 | { |
2cfa0c8d JB |
6888 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
6889 | of the global scope. But in Ada, we want to be able to access | |
6890 | nested procedures globally. So all Ada subprograms are stored | |
6891 | in the global scope. */ | |
3e29f34a MR |
6892 | /* prim_record_minimal_symbol (actual_name, addr, mst_text, |
6893 | objfile); */ | |
f47fb265 | 6894 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6895 | built_actual_name != NULL, |
f47fb265 MS |
6896 | VAR_DOMAIN, LOC_BLOCK, |
6897 | &objfile->global_psymbols, | |
3e29f34a | 6898 | 0, addr, cu->language, objfile); |
c906108c SS |
6899 | } |
6900 | else | |
6901 | { | |
3e29f34a MR |
6902 | /* prim_record_minimal_symbol (actual_name, addr, mst_file_text, |
6903 | objfile); */ | |
f47fb265 | 6904 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6905 | built_actual_name != NULL, |
f47fb265 MS |
6906 | VAR_DOMAIN, LOC_BLOCK, |
6907 | &objfile->static_psymbols, | |
3e29f34a | 6908 | 0, addr, cu->language, objfile); |
c906108c SS |
6909 | } |
6910 | break; | |
72929c62 JB |
6911 | case DW_TAG_constant: |
6912 | { | |
6913 | struct psymbol_allocation_list *list; | |
6914 | ||
6915 | if (pdi->is_external) | |
6916 | list = &objfile->global_psymbols; | |
6917 | else | |
6918 | list = &objfile->static_psymbols; | |
f47fb265 | 6919 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6920 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
f47fb265 | 6921 | list, 0, 0, cu->language, objfile); |
72929c62 JB |
6922 | } |
6923 | break; | |
c906108c | 6924 | case DW_TAG_variable: |
95554aad TT |
6925 | if (pdi->d.locdesc) |
6926 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 6927 | |
95554aad | 6928 | if (pdi->d.locdesc |
caac4577 JG |
6929 | && addr == 0 |
6930 | && !dwarf2_per_objfile->has_section_at_zero) | |
6931 | { | |
6932 | /* A global or static variable may also have been stripped | |
6933 | out by the linker if unused, in which case its address | |
6934 | will be nullified; do not add such variables into partial | |
6935 | symbol table then. */ | |
6936 | } | |
6937 | else if (pdi->is_external) | |
c906108c SS |
6938 | { |
6939 | /* Global Variable. | |
6940 | Don't enter into the minimal symbol tables as there is | |
6941 | a minimal symbol table entry from the ELF symbols already. | |
6942 | Enter into partial symbol table if it has a location | |
6943 | descriptor or a type. | |
6944 | If the location descriptor is missing, new_symbol will create | |
6945 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
6946 | be determined from the minimal symbol table whenever the variable | |
6947 | is referenced. | |
6948 | The address for the partial symbol table entry is not | |
6949 | used by GDB, but it comes in handy for debugging partial symbol | |
6950 | table building. */ | |
6951 | ||
95554aad | 6952 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 6953 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6954 | built_actual_name != NULL, |
f47fb265 MS |
6955 | VAR_DOMAIN, LOC_STATIC, |
6956 | &objfile->global_psymbols, | |
6957 | 0, addr + baseaddr, | |
6958 | cu->language, objfile); | |
c906108c SS |
6959 | } |
6960 | else | |
6961 | { | |
ff908ebf AW |
6962 | int has_loc = pdi->d.locdesc != NULL; |
6963 | ||
6964 | /* Static Variable. Skip symbols whose value we cannot know (those | |
6965 | without location descriptors or constant values). */ | |
6966 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 6967 | { |
15d034d0 | 6968 | xfree (built_actual_name); |
decbce07 MS |
6969 | return; |
6970 | } | |
ff908ebf | 6971 | |
f47fb265 | 6972 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 6973 | mst_file_data, objfile); */ |
f47fb265 | 6974 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6975 | built_actual_name != NULL, |
f47fb265 MS |
6976 | VAR_DOMAIN, LOC_STATIC, |
6977 | &objfile->static_psymbols, | |
ff908ebf AW |
6978 | 0, |
6979 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, | |
f47fb265 | 6980 | cu->language, objfile); |
c906108c SS |
6981 | } |
6982 | break; | |
6983 | case DW_TAG_typedef: | |
6984 | case DW_TAG_base_type: | |
a02abb62 | 6985 | case DW_TAG_subrange_type: |
38d518c9 | 6986 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6987 | built_actual_name != NULL, |
176620f1 | 6988 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 6989 | &objfile->static_psymbols, |
e142c38c | 6990 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6991 | break; |
74921315 | 6992 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
6993 | case DW_TAG_namespace: |
6994 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 6995 | built_actual_name != NULL, |
72bf9492 DJ |
6996 | VAR_DOMAIN, LOC_TYPEDEF, |
6997 | &objfile->global_psymbols, | |
6998 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
6999 | break; | |
530e8392 KB |
7000 | case DW_TAG_module: |
7001 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
7002 | built_actual_name != NULL, | |
7003 | MODULE_DOMAIN, LOC_TYPEDEF, | |
7004 | &objfile->global_psymbols, | |
7005 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
7006 | break; | |
c906108c | 7007 | case DW_TAG_class_type: |
680b30c7 | 7008 | case DW_TAG_interface_type: |
c906108c SS |
7009 | case DW_TAG_structure_type: |
7010 | case DW_TAG_union_type: | |
7011 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
7012 | /* Skip external references. The DWARF standard says in the section |
7013 | about "Structure, Union, and Class Type Entries": "An incomplete | |
7014 | structure, union or class type is represented by a structure, | |
7015 | union or class entry that does not have a byte size attribute | |
7016 | and that has a DW_AT_declaration attribute." */ | |
7017 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 7018 | { |
15d034d0 | 7019 | xfree (built_actual_name); |
decbce07 MS |
7020 | return; |
7021 | } | |
fa4028e9 | 7022 | |
63d06c5c DC |
7023 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
7024 | static vs. global. */ | |
38d518c9 | 7025 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7026 | built_actual_name != NULL, |
176620f1 | 7027 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
7028 | (cu->language == language_cplus |
7029 | || cu->language == language_java) | |
63d06c5c DC |
7030 | ? &objfile->global_psymbols |
7031 | : &objfile->static_psymbols, | |
e142c38c | 7032 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 7033 | |
c906108c SS |
7034 | break; |
7035 | case DW_TAG_enumerator: | |
38d518c9 | 7036 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7037 | built_actual_name != NULL, |
176620f1 | 7038 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
7039 | (cu->language == language_cplus |
7040 | || cu->language == language_java) | |
f6fe98ef DJ |
7041 | ? &objfile->global_psymbols |
7042 | : &objfile->static_psymbols, | |
e142c38c | 7043 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
7044 | break; |
7045 | default: | |
7046 | break; | |
7047 | } | |
5c4e30ca | 7048 | |
15d034d0 | 7049 | xfree (built_actual_name); |
c906108c SS |
7050 | } |
7051 | ||
5c4e30ca DC |
7052 | /* Read a partial die corresponding to a namespace; also, add a symbol |
7053 | corresponding to that namespace to the symbol table. NAMESPACE is | |
7054 | the name of the enclosing namespace. */ | |
91c24f0a | 7055 | |
72bf9492 DJ |
7056 | static void |
7057 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 7058 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 7059 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 7060 | { |
72bf9492 | 7061 | /* Add a symbol for the namespace. */ |
e7c27a73 | 7062 | |
72bf9492 | 7063 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
7064 | |
7065 | /* Now scan partial symbols in that namespace. */ | |
7066 | ||
91c24f0a | 7067 | if (pdi->has_children) |
cdc07690 | 7068 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
7069 | } |
7070 | ||
5d7cb8df JK |
7071 | /* Read a partial die corresponding to a Fortran module. */ |
7072 | ||
7073 | static void | |
7074 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 7075 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 7076 | { |
530e8392 KB |
7077 | /* Add a symbol for the namespace. */ |
7078 | ||
7079 | add_partial_symbol (pdi, cu); | |
7080 | ||
f55ee35c | 7081 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
7082 | |
7083 | if (pdi->has_children) | |
cdc07690 | 7084 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
7085 | } |
7086 | ||
bc30ff58 JB |
7087 | /* Read a partial die corresponding to a subprogram and create a partial |
7088 | symbol for that subprogram. When the CU language allows it, this | |
7089 | routine also defines a partial symbol for each nested subprogram | |
cdc07690 | 7090 | that this subprogram contains. If SET_ADDRMAP is true, record the |
428fc5fc YQ |
7091 | covered ranges in the addrmap. Set *LOWPC and *HIGHPC to the lowest |
7092 | and highest PC values found in PDI. | |
6e70227d | 7093 | |
cdc07690 YQ |
7094 | PDI may also be a lexical block, in which case we simply search |
7095 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
7096 | Again, this is only performed when the CU language allows this |
7097 | type of definitions. */ | |
7098 | ||
7099 | static void | |
7100 | add_partial_subprogram (struct partial_die_info *pdi, | |
7101 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 7102 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 JB |
7103 | { |
7104 | if (pdi->tag == DW_TAG_subprogram) | |
7105 | { | |
7106 | if (pdi->has_pc_info) | |
7107 | { | |
7108 | if (pdi->lowpc < *lowpc) | |
7109 | *lowpc = pdi->lowpc; | |
7110 | if (pdi->highpc > *highpc) | |
7111 | *highpc = pdi->highpc; | |
cdc07690 | 7112 | if (set_addrmap) |
5734ee8b | 7113 | { |
5734ee8b | 7114 | struct objfile *objfile = cu->objfile; |
3e29f34a MR |
7115 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
7116 | CORE_ADDR baseaddr; | |
7117 | CORE_ADDR highpc; | |
7118 | CORE_ADDR lowpc; | |
5734ee8b DJ |
7119 | |
7120 | baseaddr = ANOFFSET (objfile->section_offsets, | |
7121 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
7122 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
7123 | pdi->lowpc + baseaddr); | |
7124 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
7125 | pdi->highpc + baseaddr); | |
7126 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 7127 | cu->per_cu->v.psymtab); |
5734ee8b | 7128 | } |
481860b3 GB |
7129 | } |
7130 | ||
7131 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
7132 | { | |
bc30ff58 | 7133 | if (!pdi->is_declaration) |
e8d05480 JB |
7134 | /* Ignore subprogram DIEs that do not have a name, they are |
7135 | illegal. Do not emit a complaint at this point, we will | |
7136 | do so when we convert this psymtab into a symtab. */ | |
7137 | if (pdi->name) | |
7138 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
7139 | } |
7140 | } | |
6e70227d | 7141 | |
bc30ff58 JB |
7142 | if (! pdi->has_children) |
7143 | return; | |
7144 | ||
7145 | if (cu->language == language_ada) | |
7146 | { | |
7147 | pdi = pdi->die_child; | |
7148 | while (pdi != NULL) | |
7149 | { | |
7150 | fixup_partial_die (pdi, cu); | |
7151 | if (pdi->tag == DW_TAG_subprogram | |
7152 | || pdi->tag == DW_TAG_lexical_block) | |
cdc07690 | 7153 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
7154 | pdi = pdi->die_sibling; |
7155 | } | |
7156 | } | |
7157 | } | |
7158 | ||
91c24f0a DC |
7159 | /* Read a partial die corresponding to an enumeration type. */ |
7160 | ||
72bf9492 DJ |
7161 | static void |
7162 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
7163 | struct dwarf2_cu *cu) | |
91c24f0a | 7164 | { |
72bf9492 | 7165 | struct partial_die_info *pdi; |
91c24f0a DC |
7166 | |
7167 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
7168 | add_partial_symbol (enum_pdi, cu); |
7169 | ||
7170 | pdi = enum_pdi->die_child; | |
7171 | while (pdi) | |
91c24f0a | 7172 | { |
72bf9492 | 7173 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 7174 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 7175 | else |
72bf9492 DJ |
7176 | add_partial_symbol (pdi, cu); |
7177 | pdi = pdi->die_sibling; | |
91c24f0a | 7178 | } |
91c24f0a DC |
7179 | } |
7180 | ||
6caca83c CC |
7181 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
7182 | ||
7183 | static unsigned int | |
d521ce57 | 7184 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
7185 | { |
7186 | unsigned int bytes_read; | |
7187 | ||
7188 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7189 | } | |
7190 | ||
4bb7a0a7 DJ |
7191 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
7192 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
7193 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
7194 | the initial number. */ | |
7195 | ||
7196 | static struct abbrev_info * | |
d521ce57 | 7197 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 7198 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
7199 | { |
7200 | bfd *abfd = cu->objfile->obfd; | |
7201 | unsigned int abbrev_number; | |
7202 | struct abbrev_info *abbrev; | |
7203 | ||
7204 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
7205 | ||
7206 | if (abbrev_number == 0) | |
7207 | return NULL; | |
7208 | ||
433df2d4 | 7209 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
7210 | if (!abbrev) |
7211 | { | |
422b9917 DE |
7212 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
7213 | " at offset 0x%x [in module %s]"), | |
7214 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", | |
7215 | cu->header.offset.sect_off, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
7216 | } |
7217 | ||
7218 | return abbrev; | |
7219 | } | |
7220 | ||
93311388 DE |
7221 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7222 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
7223 | DIE. Any children of the skipped DIEs will also be skipped. */ |
7224 | ||
d521ce57 TT |
7225 | static const gdb_byte * |
7226 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 7227 | { |
dee91e82 | 7228 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
7229 | struct abbrev_info *abbrev; |
7230 | unsigned int bytes_read; | |
7231 | ||
7232 | while (1) | |
7233 | { | |
7234 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
7235 | if (abbrev == NULL) | |
7236 | return info_ptr + bytes_read; | |
7237 | else | |
dee91e82 | 7238 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
7239 | } |
7240 | } | |
7241 | ||
93311388 DE |
7242 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7243 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
7244 | abbrev corresponding to that skipped uleb128 should be passed in |
7245 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
7246 | children. */ | |
7247 | ||
d521ce57 TT |
7248 | static const gdb_byte * |
7249 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 7250 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
7251 | { |
7252 | unsigned int bytes_read; | |
7253 | struct attribute attr; | |
dee91e82 DE |
7254 | bfd *abfd = reader->abfd; |
7255 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 7256 | const gdb_byte *buffer = reader->buffer; |
f664829e | 7257 | const gdb_byte *buffer_end = reader->buffer_end; |
d521ce57 | 7258 | const gdb_byte *start_info_ptr = info_ptr; |
4bb7a0a7 DJ |
7259 | unsigned int form, i; |
7260 | ||
7261 | for (i = 0; i < abbrev->num_attrs; i++) | |
7262 | { | |
7263 | /* The only abbrev we care about is DW_AT_sibling. */ | |
7264 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
7265 | { | |
dee91e82 | 7266 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 7267 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
7268 | complaint (&symfile_complaints, |
7269 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 7270 | else |
b9502d3f WN |
7271 | { |
7272 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
7273 | const gdb_byte *sibling_ptr = buffer + off; | |
7274 | ||
7275 | if (sibling_ptr < info_ptr) | |
7276 | complaint (&symfile_complaints, | |
7277 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
7278 | else if (sibling_ptr > reader->buffer_end) |
7279 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
7280 | else |
7281 | return sibling_ptr; | |
7282 | } | |
4bb7a0a7 DJ |
7283 | } |
7284 | ||
7285 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
7286 | form = abbrev->attrs[i].form; | |
7287 | skip_attribute: | |
7288 | switch (form) | |
7289 | { | |
4bb7a0a7 | 7290 | case DW_FORM_ref_addr: |
ae411497 TT |
7291 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
7292 | and later it is offset sized. */ | |
7293 | if (cu->header.version == 2) | |
7294 | info_ptr += cu->header.addr_size; | |
7295 | else | |
7296 | info_ptr += cu->header.offset_size; | |
7297 | break; | |
36586728 TT |
7298 | case DW_FORM_GNU_ref_alt: |
7299 | info_ptr += cu->header.offset_size; | |
7300 | break; | |
ae411497 | 7301 | case DW_FORM_addr: |
4bb7a0a7 DJ |
7302 | info_ptr += cu->header.addr_size; |
7303 | break; | |
7304 | case DW_FORM_data1: | |
7305 | case DW_FORM_ref1: | |
7306 | case DW_FORM_flag: | |
7307 | info_ptr += 1; | |
7308 | break; | |
2dc7f7b3 TT |
7309 | case DW_FORM_flag_present: |
7310 | break; | |
4bb7a0a7 DJ |
7311 | case DW_FORM_data2: |
7312 | case DW_FORM_ref2: | |
7313 | info_ptr += 2; | |
7314 | break; | |
7315 | case DW_FORM_data4: | |
7316 | case DW_FORM_ref4: | |
7317 | info_ptr += 4; | |
7318 | break; | |
7319 | case DW_FORM_data8: | |
7320 | case DW_FORM_ref8: | |
55f1336d | 7321 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
7322 | info_ptr += 8; |
7323 | break; | |
7324 | case DW_FORM_string: | |
9b1c24c8 | 7325 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
7326 | info_ptr += bytes_read; |
7327 | break; | |
2dc7f7b3 | 7328 | case DW_FORM_sec_offset: |
4bb7a0a7 | 7329 | case DW_FORM_strp: |
36586728 | 7330 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
7331 | info_ptr += cu->header.offset_size; |
7332 | break; | |
2dc7f7b3 | 7333 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
7334 | case DW_FORM_block: |
7335 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7336 | info_ptr += bytes_read; | |
7337 | break; | |
7338 | case DW_FORM_block1: | |
7339 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
7340 | break; | |
7341 | case DW_FORM_block2: | |
7342 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
7343 | break; | |
7344 | case DW_FORM_block4: | |
7345 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
7346 | break; | |
7347 | case DW_FORM_sdata: | |
7348 | case DW_FORM_udata: | |
7349 | case DW_FORM_ref_udata: | |
3019eac3 DE |
7350 | case DW_FORM_GNU_addr_index: |
7351 | case DW_FORM_GNU_str_index: | |
d521ce57 | 7352 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
7353 | break; |
7354 | case DW_FORM_indirect: | |
7355 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7356 | info_ptr += bytes_read; | |
7357 | /* We need to continue parsing from here, so just go back to | |
7358 | the top. */ | |
7359 | goto skip_attribute; | |
7360 | ||
7361 | default: | |
3e43a32a MS |
7362 | error (_("Dwarf Error: Cannot handle %s " |
7363 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
7364 | dwarf_form_name (form), |
7365 | bfd_get_filename (abfd)); | |
7366 | } | |
7367 | } | |
7368 | ||
7369 | if (abbrev->has_children) | |
dee91e82 | 7370 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
7371 | else |
7372 | return info_ptr; | |
7373 | } | |
7374 | ||
93311388 | 7375 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 7376 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 7377 | |
d521ce57 | 7378 | static const gdb_byte * |
dee91e82 DE |
7379 | locate_pdi_sibling (const struct die_reader_specs *reader, |
7380 | struct partial_die_info *orig_pdi, | |
d521ce57 | 7381 | const gdb_byte *info_ptr) |
91c24f0a DC |
7382 | { |
7383 | /* Do we know the sibling already? */ | |
72bf9492 | 7384 | |
91c24f0a DC |
7385 | if (orig_pdi->sibling) |
7386 | return orig_pdi->sibling; | |
7387 | ||
7388 | /* Are there any children to deal with? */ | |
7389 | ||
7390 | if (!orig_pdi->has_children) | |
7391 | return info_ptr; | |
7392 | ||
4bb7a0a7 | 7393 | /* Skip the children the long way. */ |
91c24f0a | 7394 | |
dee91e82 | 7395 | return skip_children (reader, info_ptr); |
91c24f0a DC |
7396 | } |
7397 | ||
257e7a09 | 7398 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 7399 | not NULL. */ |
c906108c SS |
7400 | |
7401 | static void | |
257e7a09 YQ |
7402 | dwarf2_read_symtab (struct partial_symtab *self, |
7403 | struct objfile *objfile) | |
c906108c | 7404 | { |
257e7a09 | 7405 | if (self->readin) |
c906108c | 7406 | { |
442e4d9c | 7407 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 7408 | self->filename); |
442e4d9c YQ |
7409 | } |
7410 | else | |
7411 | { | |
7412 | if (info_verbose) | |
c906108c | 7413 | { |
442e4d9c | 7414 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 7415 | self->filename); |
442e4d9c | 7416 | gdb_flush (gdb_stdout); |
c906108c | 7417 | } |
c906108c | 7418 | |
442e4d9c YQ |
7419 | /* Restore our global data. */ |
7420 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10b3939b | 7421 | |
442e4d9c YQ |
7422 | /* If this psymtab is constructed from a debug-only objfile, the |
7423 | has_section_at_zero flag will not necessarily be correct. We | |
7424 | can get the correct value for this flag by looking at the data | |
7425 | associated with the (presumably stripped) associated objfile. */ | |
7426 | if (objfile->separate_debug_objfile_backlink) | |
7427 | { | |
7428 | struct dwarf2_per_objfile *dpo_backlink | |
7429 | = objfile_data (objfile->separate_debug_objfile_backlink, | |
7430 | dwarf2_objfile_data_key); | |
9a619af0 | 7431 | |
442e4d9c YQ |
7432 | dwarf2_per_objfile->has_section_at_zero |
7433 | = dpo_backlink->has_section_at_zero; | |
7434 | } | |
b2ab525c | 7435 | |
442e4d9c | 7436 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 7437 | |
257e7a09 | 7438 | psymtab_to_symtab_1 (self); |
c906108c | 7439 | |
442e4d9c YQ |
7440 | /* Finish up the debug error message. */ |
7441 | if (info_verbose) | |
7442 | printf_filtered (_("done.\n")); | |
c906108c | 7443 | } |
95554aad TT |
7444 | |
7445 | process_cu_includes (); | |
c906108c | 7446 | } |
9cdd5dbd DE |
7447 | \f |
7448 | /* Reading in full CUs. */ | |
c906108c | 7449 | |
10b3939b DJ |
7450 | /* Add PER_CU to the queue. */ |
7451 | ||
7452 | static void | |
95554aad TT |
7453 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7454 | enum language pretend_language) | |
10b3939b DJ |
7455 | { |
7456 | struct dwarf2_queue_item *item; | |
7457 | ||
7458 | per_cu->queued = 1; | |
7459 | item = xmalloc (sizeof (*item)); | |
7460 | item->per_cu = per_cu; | |
95554aad | 7461 | item->pretend_language = pretend_language; |
10b3939b DJ |
7462 | item->next = NULL; |
7463 | ||
7464 | if (dwarf2_queue == NULL) | |
7465 | dwarf2_queue = item; | |
7466 | else | |
7467 | dwarf2_queue_tail->next = item; | |
7468 | ||
7469 | dwarf2_queue_tail = item; | |
7470 | } | |
7471 | ||
89e63ee4 DE |
7472 | /* If PER_CU is not yet queued, add it to the queue. |
7473 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
7474 | dependency. | |
0907af0c | 7475 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
7476 | meaning either PER_CU is already queued or it is already loaded. |
7477 | ||
7478 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
7479 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
7480 | |
7481 | static int | |
89e63ee4 | 7482 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
7483 | struct dwarf2_per_cu_data *per_cu, |
7484 | enum language pretend_language) | |
7485 | { | |
7486 | /* We may arrive here during partial symbol reading, if we need full | |
7487 | DIEs to process an unusual case (e.g. template arguments). Do | |
7488 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
7489 | if (dwarf2_per_objfile->reading_partial_symbols) | |
7490 | { | |
7491 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
7492 | return 1; | |
7493 | return 0; | |
7494 | } | |
7495 | ||
7496 | /* Mark the dependence relation so that we don't flush PER_CU | |
7497 | too early. */ | |
89e63ee4 DE |
7498 | if (dependent_cu != NULL) |
7499 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
7500 | |
7501 | /* If it's already on the queue, we have nothing to do. */ | |
7502 | if (per_cu->queued) | |
7503 | return 0; | |
7504 | ||
7505 | /* If the compilation unit is already loaded, just mark it as | |
7506 | used. */ | |
7507 | if (per_cu->cu != NULL) | |
7508 | { | |
7509 | per_cu->cu->last_used = 0; | |
7510 | return 0; | |
7511 | } | |
7512 | ||
7513 | /* Add it to the queue. */ | |
7514 | queue_comp_unit (per_cu, pretend_language); | |
7515 | ||
7516 | return 1; | |
7517 | } | |
7518 | ||
10b3939b DJ |
7519 | /* Process the queue. */ |
7520 | ||
7521 | static void | |
a0f42c21 | 7522 | process_queue (void) |
10b3939b DJ |
7523 | { |
7524 | struct dwarf2_queue_item *item, *next_item; | |
7525 | ||
45cfd468 DE |
7526 | if (dwarf2_read_debug) |
7527 | { | |
7528 | fprintf_unfiltered (gdb_stdlog, | |
7529 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 7530 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
7531 | } |
7532 | ||
03dd20cc DJ |
7533 | /* The queue starts out with one item, but following a DIE reference |
7534 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
7535 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
7536 | { | |
9291a0cd | 7537 | if (dwarf2_per_objfile->using_index |
43f3e411 | 7538 | ? !item->per_cu->v.quick->compunit_symtab |
9291a0cd | 7539 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) |
f4dc4d17 DE |
7540 | { |
7541 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 7542 | unsigned int debug_print_threshold; |
247f5c4f | 7543 | char buf[100]; |
f4dc4d17 | 7544 | |
247f5c4f | 7545 | if (per_cu->is_debug_types) |
f4dc4d17 | 7546 | { |
247f5c4f DE |
7547 | struct signatured_type *sig_type = |
7548 | (struct signatured_type *) per_cu; | |
7549 | ||
7550 | sprintf (buf, "TU %s at offset 0x%x", | |
73be47f5 DE |
7551 | hex_string (sig_type->signature), |
7552 | per_cu->offset.sect_off); | |
7553 | /* There can be 100s of TUs. | |
7554 | Only print them in verbose mode. */ | |
7555 | debug_print_threshold = 2; | |
f4dc4d17 | 7556 | } |
247f5c4f | 7557 | else |
73be47f5 DE |
7558 | { |
7559 | sprintf (buf, "CU at offset 0x%x", per_cu->offset.sect_off); | |
7560 | debug_print_threshold = 1; | |
7561 | } | |
247f5c4f | 7562 | |
73be47f5 | 7563 | if (dwarf2_read_debug >= debug_print_threshold) |
247f5c4f | 7564 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
7565 | |
7566 | if (per_cu->is_debug_types) | |
7567 | process_full_type_unit (per_cu, item->pretend_language); | |
7568 | else | |
7569 | process_full_comp_unit (per_cu, item->pretend_language); | |
7570 | ||
73be47f5 | 7571 | if (dwarf2_read_debug >= debug_print_threshold) |
247f5c4f | 7572 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 7573 | } |
10b3939b DJ |
7574 | |
7575 | item->per_cu->queued = 0; | |
7576 | next_item = item->next; | |
7577 | xfree (item); | |
7578 | } | |
7579 | ||
7580 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
7581 | |
7582 | if (dwarf2_read_debug) | |
7583 | { | |
7584 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 7585 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 7586 | } |
10b3939b DJ |
7587 | } |
7588 | ||
7589 | /* Free all allocated queue entries. This function only releases anything if | |
7590 | an error was thrown; if the queue was processed then it would have been | |
7591 | freed as we went along. */ | |
7592 | ||
7593 | static void | |
7594 | dwarf2_release_queue (void *dummy) | |
7595 | { | |
7596 | struct dwarf2_queue_item *item, *last; | |
7597 | ||
7598 | item = dwarf2_queue; | |
7599 | while (item) | |
7600 | { | |
7601 | /* Anything still marked queued is likely to be in an | |
7602 | inconsistent state, so discard it. */ | |
7603 | if (item->per_cu->queued) | |
7604 | { | |
7605 | if (item->per_cu->cu != NULL) | |
dee91e82 | 7606 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
7607 | item->per_cu->queued = 0; |
7608 | } | |
7609 | ||
7610 | last = item; | |
7611 | item = item->next; | |
7612 | xfree (last); | |
7613 | } | |
7614 | ||
7615 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
7616 | } | |
7617 | ||
7618 | /* Read in full symbols for PST, and anything it depends on. */ | |
7619 | ||
c906108c | 7620 | static void |
fba45db2 | 7621 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 7622 | { |
10b3939b | 7623 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
7624 | int i; |
7625 | ||
95554aad TT |
7626 | if (pst->readin) |
7627 | return; | |
7628 | ||
aaa75496 | 7629 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
7630 | if (!pst->dependencies[i]->readin |
7631 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
7632 | { |
7633 | /* Inform about additional files that need to be read in. */ | |
7634 | if (info_verbose) | |
7635 | { | |
a3f17187 | 7636 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
7637 | fputs_filtered (" ", gdb_stdout); |
7638 | wrap_here (""); | |
7639 | fputs_filtered ("and ", gdb_stdout); | |
7640 | wrap_here (""); | |
7641 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 7642 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
7643 | gdb_flush (gdb_stdout); |
7644 | } | |
7645 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
7646 | } | |
7647 | ||
e38df1d0 | 7648 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
7649 | |
7650 | if (per_cu == NULL) | |
aaa75496 JB |
7651 | { |
7652 | /* It's an include file, no symbols to read for it. | |
7653 | Everything is in the parent symtab. */ | |
7654 | pst->readin = 1; | |
7655 | return; | |
7656 | } | |
c906108c | 7657 | |
a0f42c21 | 7658 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
7659 | } |
7660 | ||
dee91e82 DE |
7661 | /* Trivial hash function for die_info: the hash value of a DIE |
7662 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 7663 | |
dee91e82 DE |
7664 | static hashval_t |
7665 | die_hash (const void *item) | |
10b3939b | 7666 | { |
dee91e82 | 7667 | const struct die_info *die = item; |
6502dd73 | 7668 | |
dee91e82 DE |
7669 | return die->offset.sect_off; |
7670 | } | |
63d06c5c | 7671 | |
dee91e82 DE |
7672 | /* Trivial comparison function for die_info structures: two DIEs |
7673 | are equal if they have the same offset. */ | |
98bfdba5 | 7674 | |
dee91e82 DE |
7675 | static int |
7676 | die_eq (const void *item_lhs, const void *item_rhs) | |
7677 | { | |
7678 | const struct die_info *die_lhs = item_lhs; | |
7679 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 7680 | |
dee91e82 DE |
7681 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
7682 | } | |
c906108c | 7683 | |
dee91e82 DE |
7684 | /* die_reader_func for load_full_comp_unit. |
7685 | This is identical to read_signatured_type_reader, | |
7686 | but is kept separate for now. */ | |
c906108c | 7687 | |
dee91e82 DE |
7688 | static void |
7689 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7690 | const gdb_byte *info_ptr, |
dee91e82 DE |
7691 | struct die_info *comp_unit_die, |
7692 | int has_children, | |
7693 | void *data) | |
7694 | { | |
7695 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 7696 | enum language *language_ptr = data; |
6caca83c | 7697 | |
dee91e82 DE |
7698 | gdb_assert (cu->die_hash == NULL); |
7699 | cu->die_hash = | |
7700 | htab_create_alloc_ex (cu->header.length / 12, | |
7701 | die_hash, | |
7702 | die_eq, | |
7703 | NULL, | |
7704 | &cu->comp_unit_obstack, | |
7705 | hashtab_obstack_allocate, | |
7706 | dummy_obstack_deallocate); | |
e142c38c | 7707 | |
dee91e82 DE |
7708 | if (has_children) |
7709 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
7710 | &info_ptr, comp_unit_die); | |
7711 | cu->dies = comp_unit_die; | |
7712 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
7713 | |
7714 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 7715 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 7716 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
7717 | or we won't be able to build types correctly. |
7718 | Similarly, if we do not read the producer, we can not apply | |
7719 | producer-specific interpretation. */ | |
95554aad | 7720 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 7721 | } |
10b3939b | 7722 | |
dee91e82 | 7723 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 7724 | |
dee91e82 | 7725 | static void |
95554aad TT |
7726 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
7727 | enum language pretend_language) | |
dee91e82 | 7728 | { |
3019eac3 | 7729 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 7730 | |
f4dc4d17 DE |
7731 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
7732 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
7733 | } |
7734 | ||
3da10d80 KS |
7735 | /* Add a DIE to the delayed physname list. */ |
7736 | ||
7737 | static void | |
7738 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
7739 | const char *name, struct die_info *die, | |
7740 | struct dwarf2_cu *cu) | |
7741 | { | |
7742 | struct delayed_method_info mi; | |
7743 | mi.type = type; | |
7744 | mi.fnfield_index = fnfield_index; | |
7745 | mi.index = index; | |
7746 | mi.name = name; | |
7747 | mi.die = die; | |
7748 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
7749 | } | |
7750 | ||
7751 | /* A cleanup for freeing the delayed method list. */ | |
7752 | ||
7753 | static void | |
7754 | free_delayed_list (void *ptr) | |
7755 | { | |
7756 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
7757 | if (cu->method_list != NULL) | |
7758 | { | |
7759 | VEC_free (delayed_method_info, cu->method_list); | |
7760 | cu->method_list = NULL; | |
7761 | } | |
7762 | } | |
7763 | ||
7764 | /* Compute the physnames of any methods on the CU's method list. | |
7765 | ||
7766 | The computation of method physnames is delayed in order to avoid the | |
7767 | (bad) condition that one of the method's formal parameters is of an as yet | |
7768 | incomplete type. */ | |
7769 | ||
7770 | static void | |
7771 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
7772 | { | |
7773 | int i; | |
7774 | struct delayed_method_info *mi; | |
7775 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
7776 | { | |
1d06ead6 | 7777 | const char *physname; |
3da10d80 KS |
7778 | struct fn_fieldlist *fn_flp |
7779 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 7780 | physname = dwarf2_physname (mi->name, mi->die, cu); |
005e54bb DE |
7781 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi->index) |
7782 | = physname ? physname : ""; | |
3da10d80 KS |
7783 | } |
7784 | } | |
7785 | ||
a766d390 DE |
7786 | /* Go objects should be embedded in a DW_TAG_module DIE, |
7787 | and it's not clear if/how imported objects will appear. | |
7788 | To keep Go support simple until that's worked out, | |
7789 | go back through what we've read and create something usable. | |
7790 | We could do this while processing each DIE, and feels kinda cleaner, | |
7791 | but that way is more invasive. | |
7792 | This is to, for example, allow the user to type "p var" or "b main" | |
7793 | without having to specify the package name, and allow lookups | |
7794 | of module.object to work in contexts that use the expression | |
7795 | parser. */ | |
7796 | ||
7797 | static void | |
7798 | fixup_go_packaging (struct dwarf2_cu *cu) | |
7799 | { | |
7800 | char *package_name = NULL; | |
7801 | struct pending *list; | |
7802 | int i; | |
7803 | ||
7804 | for (list = global_symbols; list != NULL; list = list->next) | |
7805 | { | |
7806 | for (i = 0; i < list->nsyms; ++i) | |
7807 | { | |
7808 | struct symbol *sym = list->symbol[i]; | |
7809 | ||
7810 | if (SYMBOL_LANGUAGE (sym) == language_go | |
7811 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
7812 | { | |
7813 | char *this_package_name = go_symbol_package_name (sym); | |
7814 | ||
7815 | if (this_package_name == NULL) | |
7816 | continue; | |
7817 | if (package_name == NULL) | |
7818 | package_name = this_package_name; | |
7819 | else | |
7820 | { | |
7821 | if (strcmp (package_name, this_package_name) != 0) | |
7822 | complaint (&symfile_complaints, | |
7823 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
7824 | (symbol_symtab (sym) != NULL |
7825 | ? symtab_to_filename_for_display | |
7826 | (symbol_symtab (sym)) | |
4262abfb | 7827 | : objfile_name (cu->objfile)), |
a766d390 DE |
7828 | this_package_name, package_name); |
7829 | xfree (this_package_name); | |
7830 | } | |
7831 | } | |
7832 | } | |
7833 | } | |
7834 | ||
7835 | if (package_name != NULL) | |
7836 | { | |
7837 | struct objfile *objfile = cu->objfile; | |
34a68019 TT |
7838 | const char *saved_package_name |
7839 | = obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
7840 | package_name, | |
7841 | strlen (package_name)); | |
a766d390 | 7842 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, |
86f62fd7 | 7843 | saved_package_name, objfile); |
a766d390 DE |
7844 | struct symbol *sym; |
7845 | ||
7846 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7847 | ||
e623cf5d | 7848 | sym = allocate_symbol (objfile); |
f85f34ed | 7849 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
7850 | SYMBOL_SET_NAMES (sym, saved_package_name, |
7851 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
7852 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
7853 | e.g., "main" finds the "main" module and not C's main(). */ | |
7854 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 7855 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
7856 | SYMBOL_TYPE (sym) = type; |
7857 | ||
7858 | add_symbol_to_list (sym, &global_symbols); | |
7859 | ||
7860 | xfree (package_name); | |
7861 | } | |
7862 | } | |
7863 | ||
95554aad TT |
7864 | /* Return the symtab for PER_CU. This works properly regardless of |
7865 | whether we're using the index or psymtabs. */ | |
7866 | ||
43f3e411 DE |
7867 | static struct compunit_symtab * |
7868 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad TT |
7869 | { |
7870 | return (dwarf2_per_objfile->using_index | |
43f3e411 DE |
7871 | ? per_cu->v.quick->compunit_symtab |
7872 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
7873 | } |
7874 | ||
7875 | /* A helper function for computing the list of all symbol tables | |
7876 | included by PER_CU. */ | |
7877 | ||
7878 | static void | |
43f3e411 | 7879 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 7880 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 7881 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 7882 | struct compunit_symtab *immediate_parent) |
95554aad TT |
7883 | { |
7884 | void **slot; | |
7885 | int ix; | |
43f3e411 | 7886 | struct compunit_symtab *cust; |
95554aad TT |
7887 | struct dwarf2_per_cu_data *iter; |
7888 | ||
7889 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
7890 | if (*slot != NULL) | |
7891 | { | |
7892 | /* This inclusion and its children have been processed. */ | |
7893 | return; | |
7894 | } | |
7895 | ||
7896 | *slot = per_cu; | |
7897 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
7898 | cust = get_compunit_symtab (per_cu); |
7899 | if (cust != NULL) | |
ec94af83 DE |
7900 | { |
7901 | /* If this is a type unit only add its symbol table if we haven't | |
7902 | seen it yet (type unit per_cu's can share symtabs). */ | |
7903 | if (per_cu->is_debug_types) | |
7904 | { | |
43f3e411 | 7905 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
7906 | if (*slot == NULL) |
7907 | { | |
43f3e411 DE |
7908 | *slot = cust; |
7909 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
7910 | if (cust->user == NULL) | |
7911 | cust->user = immediate_parent; | |
ec94af83 DE |
7912 | } |
7913 | } | |
7914 | else | |
f9125b6c | 7915 | { |
43f3e411 DE |
7916 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
7917 | if (cust->user == NULL) | |
7918 | cust->user = immediate_parent; | |
f9125b6c | 7919 | } |
ec94af83 | 7920 | } |
95554aad TT |
7921 | |
7922 | for (ix = 0; | |
796a7ff8 | 7923 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 7924 | ++ix) |
ec94af83 DE |
7925 | { |
7926 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 7927 | all_type_symtabs, iter, cust); |
ec94af83 | 7928 | } |
95554aad TT |
7929 | } |
7930 | ||
43f3e411 | 7931 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
7932 | PER_CU. */ |
7933 | ||
7934 | static void | |
43f3e411 | 7935 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 7936 | { |
f4dc4d17 DE |
7937 | gdb_assert (! per_cu->is_debug_types); |
7938 | ||
796a7ff8 | 7939 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
7940 | { |
7941 | int ix, len; | |
ec94af83 | 7942 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
7943 | struct compunit_symtab *compunit_symtab_iter; |
7944 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 7945 | htab_t all_children, all_type_symtabs; |
43f3e411 | 7946 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
7947 | |
7948 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 7949 | if (cust == NULL) |
95554aad TT |
7950 | return; |
7951 | ||
7952 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
7953 | NULL, xcalloc, xfree); | |
ec94af83 DE |
7954 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
7955 | NULL, xcalloc, xfree); | |
95554aad TT |
7956 | |
7957 | for (ix = 0; | |
796a7ff8 | 7958 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 7959 | ix, per_cu_iter); |
95554aad | 7960 | ++ix) |
ec94af83 DE |
7961 | { |
7962 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 7963 | all_type_symtabs, per_cu_iter, |
43f3e411 | 7964 | cust); |
ec94af83 | 7965 | } |
95554aad | 7966 | |
ec94af83 | 7967 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
7968 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
7969 | cust->includes | |
95554aad TT |
7970 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, |
7971 | (len + 1) * sizeof (struct symtab *)); | |
7972 | for (ix = 0; | |
43f3e411 DE |
7973 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
7974 | compunit_symtab_iter); | |
95554aad | 7975 | ++ix) |
43f3e411 DE |
7976 | cust->includes[ix] = compunit_symtab_iter; |
7977 | cust->includes[len] = NULL; | |
95554aad | 7978 | |
43f3e411 | 7979 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 7980 | htab_delete (all_children); |
ec94af83 | 7981 | htab_delete (all_type_symtabs); |
95554aad TT |
7982 | } |
7983 | } | |
7984 | ||
7985 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
7986 | read. */ | |
7987 | ||
7988 | static void | |
7989 | process_cu_includes (void) | |
7990 | { | |
7991 | int ix; | |
7992 | struct dwarf2_per_cu_data *iter; | |
7993 | ||
7994 | for (ix = 0; | |
7995 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
7996 | ix, iter); | |
7997 | ++ix) | |
f4dc4d17 DE |
7998 | { |
7999 | if (! iter->is_debug_types) | |
43f3e411 | 8000 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 8001 | } |
95554aad TT |
8002 | |
8003 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
8004 | } | |
8005 | ||
9cdd5dbd | 8006 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
8007 | already been loaded into memory. */ |
8008 | ||
8009 | static void | |
95554aad TT |
8010 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8011 | enum language pretend_language) | |
10b3939b | 8012 | { |
10b3939b | 8013 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 8014 | struct objfile *objfile = per_cu->objfile; |
3e29f34a | 8015 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 8016 | CORE_ADDR lowpc, highpc; |
43f3e411 | 8017 | struct compunit_symtab *cust; |
3da10d80 | 8018 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 8019 | CORE_ADDR baseaddr; |
4359dff1 | 8020 | struct block *static_block; |
3e29f34a | 8021 | CORE_ADDR addr; |
10b3939b DJ |
8022 | |
8023 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8024 | ||
10b3939b DJ |
8025 | buildsym_init (); |
8026 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 8027 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
8028 | |
8029 | cu->list_in_scope = &file_symbols; | |
c906108c | 8030 | |
95554aad TT |
8031 | cu->language = pretend_language; |
8032 | cu->language_defn = language_def (cu->language); | |
8033 | ||
c906108c | 8034 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 8035 | process_die (cu->dies, cu); |
c906108c | 8036 | |
a766d390 DE |
8037 | /* For now fudge the Go package. */ |
8038 | if (cu->language == language_go) | |
8039 | fixup_go_packaging (cu); | |
8040 | ||
3da10d80 KS |
8041 | /* Now that we have processed all the DIEs in the CU, all the types |
8042 | should be complete, and it should now be safe to compute all of the | |
8043 | physnames. */ | |
8044 | compute_delayed_physnames (cu); | |
8045 | do_cleanups (delayed_list_cleanup); | |
8046 | ||
fae299cd DC |
8047 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
8048 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
8049 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 8050 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 8051 | |
3e29f34a MR |
8052 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
8053 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
8054 | |
8055 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
8056 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
8057 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
8058 | addrmap to help ensure it has an accurate map of pc values belonging to | |
8059 | this comp unit. */ | |
8060 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
8061 | ||
43f3e411 DE |
8062 | cust = end_symtab_from_static_block (static_block, |
8063 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 8064 | |
43f3e411 | 8065 | if (cust != NULL) |
c906108c | 8066 | { |
df15bd07 | 8067 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 8068 | |
8be455d7 JK |
8069 | /* Set symtab language to language from DW_AT_language. If the |
8070 | compilation is from a C file generated by language preprocessors, do | |
8071 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 DE |
8072 | if (!(cu->language == language_c |
8073 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
8074 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
8be455d7 JK |
8075 | |
8076 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
8077 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
8078 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
8079 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
8080 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
8081 | |
8082 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
8083 | needed, it would be wrong due to missing DW_AT_producer there. | |
8084 | ||
8085 | Still one can confuse GDB by using non-standard GCC compilation | |
8086 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
8087 | */ | |
ab260dad | 8088 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 8089 | cust->locations_valid = 1; |
e0d00bc7 JK |
8090 | |
8091 | if (gcc_4_minor >= 5) | |
43f3e411 | 8092 | cust->epilogue_unwind_valid = 1; |
96408a79 | 8093 | |
43f3e411 | 8094 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 8095 | } |
9291a0cd TT |
8096 | |
8097 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8098 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
8099 | else |
8100 | { | |
8101 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8102 | pst->compunit_symtab = cust; |
9291a0cd TT |
8103 | pst->readin = 1; |
8104 | } | |
c906108c | 8105 | |
95554aad TT |
8106 | /* Push it for inclusion processing later. */ |
8107 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
8108 | ||
c906108c | 8109 | do_cleanups (back_to); |
f4dc4d17 | 8110 | } |
45cfd468 | 8111 | |
f4dc4d17 DE |
8112 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
8113 | already been loaded into memory. */ | |
8114 | ||
8115 | static void | |
8116 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
8117 | enum language pretend_language) | |
8118 | { | |
8119 | struct dwarf2_cu *cu = per_cu->cu; | |
8120 | struct objfile *objfile = per_cu->objfile; | |
43f3e411 | 8121 | struct compunit_symtab *cust; |
f4dc4d17 | 8122 | struct cleanup *back_to, *delayed_list_cleanup; |
0186c6a7 DE |
8123 | struct signatured_type *sig_type; |
8124 | ||
8125 | gdb_assert (per_cu->is_debug_types); | |
8126 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8127 | |
8128 | buildsym_init (); | |
8129 | back_to = make_cleanup (really_free_pendings, NULL); | |
8130 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
8131 | ||
8132 | cu->list_in_scope = &file_symbols; | |
8133 | ||
8134 | cu->language = pretend_language; | |
8135 | cu->language_defn = language_def (cu->language); | |
8136 | ||
8137 | /* The symbol tables are set up in read_type_unit_scope. */ | |
8138 | process_die (cu->dies, cu); | |
8139 | ||
8140 | /* For now fudge the Go package. */ | |
8141 | if (cu->language == language_go) | |
8142 | fixup_go_packaging (cu); | |
8143 | ||
8144 | /* Now that we have processed all the DIEs in the CU, all the types | |
8145 | should be complete, and it should now be safe to compute all of the | |
8146 | physnames. */ | |
8147 | compute_delayed_physnames (cu); | |
8148 | do_cleanups (delayed_list_cleanup); | |
8149 | ||
8150 | /* TUs share symbol tables. | |
8151 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
8152 | of it with end_expandable_symtab. Otherwise, complete the addition of |
8153 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 8154 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 8155 | { |
43f3e411 DE |
8156 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
8157 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 8158 | |
43f3e411 | 8159 | if (cust != NULL) |
f4dc4d17 DE |
8160 | { |
8161 | /* Set symtab language to language from DW_AT_language. If the | |
8162 | compilation is from a C file generated by language preprocessors, | |
8163 | do not set the language if it was already deduced by | |
8164 | start_subfile. */ | |
43f3e411 DE |
8165 | if (!(cu->language == language_c |
8166 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
8167 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
8168 | } |
8169 | } | |
8170 | else | |
8171 | { | |
0ab9ce85 | 8172 | augment_type_symtab (); |
43f3e411 | 8173 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
8174 | } |
8175 | ||
8176 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8177 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
8178 | else |
8179 | { | |
8180 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8181 | pst->compunit_symtab = cust; |
f4dc4d17 | 8182 | pst->readin = 1; |
45cfd468 | 8183 | } |
f4dc4d17 DE |
8184 | |
8185 | do_cleanups (back_to); | |
c906108c SS |
8186 | } |
8187 | ||
95554aad TT |
8188 | /* Process an imported unit DIE. */ |
8189 | ||
8190 | static void | |
8191 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
8192 | { | |
8193 | struct attribute *attr; | |
8194 | ||
f4dc4d17 DE |
8195 | /* For now we don't handle imported units in type units. */ |
8196 | if (cu->per_cu->is_debug_types) | |
8197 | { | |
8198 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8199 | " supported in type units [in module %s]"), | |
4262abfb | 8200 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
8201 | } |
8202 | ||
95554aad TT |
8203 | attr = dwarf2_attr (die, DW_AT_import, cu); |
8204 | if (attr != NULL) | |
8205 | { | |
8206 | struct dwarf2_per_cu_data *per_cu; | |
8207 | struct symtab *imported_symtab; | |
8208 | sect_offset offset; | |
36586728 | 8209 | int is_dwz; |
95554aad TT |
8210 | |
8211 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
8212 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
8213 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad | 8214 | |
69d751e3 | 8215 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
8216 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
8217 | load_full_comp_unit (per_cu, cu->language); | |
8218 | ||
796a7ff8 | 8219 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
8220 | per_cu); |
8221 | } | |
8222 | } | |
8223 | ||
adde2bff DE |
8224 | /* Reset the in_process bit of a die. */ |
8225 | ||
8226 | static void | |
8227 | reset_die_in_process (void *arg) | |
8228 | { | |
8229 | struct die_info *die = arg; | |
8c3cb9fa | 8230 | |
adde2bff DE |
8231 | die->in_process = 0; |
8232 | } | |
8233 | ||
c906108c SS |
8234 | /* Process a die and its children. */ |
8235 | ||
8236 | static void | |
e7c27a73 | 8237 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8238 | { |
adde2bff DE |
8239 | struct cleanup *in_process; |
8240 | ||
8241 | /* We should only be processing those not already in process. */ | |
8242 | gdb_assert (!die->in_process); | |
8243 | ||
8244 | die->in_process = 1; | |
8245 | in_process = make_cleanup (reset_die_in_process,die); | |
8246 | ||
c906108c SS |
8247 | switch (die->tag) |
8248 | { | |
8249 | case DW_TAG_padding: | |
8250 | break; | |
8251 | case DW_TAG_compile_unit: | |
95554aad | 8252 | case DW_TAG_partial_unit: |
e7c27a73 | 8253 | read_file_scope (die, cu); |
c906108c | 8254 | break; |
348e048f DE |
8255 | case DW_TAG_type_unit: |
8256 | read_type_unit_scope (die, cu); | |
8257 | break; | |
c906108c | 8258 | case DW_TAG_subprogram: |
c906108c | 8259 | case DW_TAG_inlined_subroutine: |
edb3359d | 8260 | read_func_scope (die, cu); |
c906108c SS |
8261 | break; |
8262 | case DW_TAG_lexical_block: | |
14898363 L |
8263 | case DW_TAG_try_block: |
8264 | case DW_TAG_catch_block: | |
e7c27a73 | 8265 | read_lexical_block_scope (die, cu); |
c906108c | 8266 | break; |
96408a79 SA |
8267 | case DW_TAG_GNU_call_site: |
8268 | read_call_site_scope (die, cu); | |
8269 | break; | |
c906108c | 8270 | case DW_TAG_class_type: |
680b30c7 | 8271 | case DW_TAG_interface_type: |
c906108c SS |
8272 | case DW_TAG_structure_type: |
8273 | case DW_TAG_union_type: | |
134d01f1 | 8274 | process_structure_scope (die, cu); |
c906108c SS |
8275 | break; |
8276 | case DW_TAG_enumeration_type: | |
134d01f1 | 8277 | process_enumeration_scope (die, cu); |
c906108c | 8278 | break; |
134d01f1 | 8279 | |
f792889a DJ |
8280 | /* These dies have a type, but processing them does not create |
8281 | a symbol or recurse to process the children. Therefore we can | |
8282 | read them on-demand through read_type_die. */ | |
c906108c | 8283 | case DW_TAG_subroutine_type: |
72019c9c | 8284 | case DW_TAG_set_type: |
c906108c | 8285 | case DW_TAG_array_type: |
c906108c | 8286 | case DW_TAG_pointer_type: |
c906108c | 8287 | case DW_TAG_ptr_to_member_type: |
c906108c | 8288 | case DW_TAG_reference_type: |
c906108c | 8289 | case DW_TAG_string_type: |
c906108c | 8290 | break; |
134d01f1 | 8291 | |
c906108c | 8292 | case DW_TAG_base_type: |
a02abb62 | 8293 | case DW_TAG_subrange_type: |
cb249c71 | 8294 | case DW_TAG_typedef: |
134d01f1 DJ |
8295 | /* Add a typedef symbol for the type definition, if it has a |
8296 | DW_AT_name. */ | |
f792889a | 8297 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 8298 | break; |
c906108c | 8299 | case DW_TAG_common_block: |
e7c27a73 | 8300 | read_common_block (die, cu); |
c906108c SS |
8301 | break; |
8302 | case DW_TAG_common_inclusion: | |
8303 | break; | |
d9fa45fe | 8304 | case DW_TAG_namespace: |
4d4ec4e5 | 8305 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 8306 | read_namespace (die, cu); |
d9fa45fe | 8307 | break; |
5d7cb8df | 8308 | case DW_TAG_module: |
4d4ec4e5 | 8309 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
8310 | read_module (die, cu); |
8311 | break; | |
d9fa45fe | 8312 | case DW_TAG_imported_declaration: |
74921315 KS |
8313 | cu->processing_has_namespace_info = 1; |
8314 | if (read_namespace_alias (die, cu)) | |
8315 | break; | |
8316 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 8317 | case DW_TAG_imported_module: |
4d4ec4e5 | 8318 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
8319 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
8320 | || cu->language != language_fortran)) | |
8321 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
8322 | dwarf_tag_name (die->tag)); | |
8323 | read_import_statement (die, cu); | |
d9fa45fe | 8324 | break; |
95554aad TT |
8325 | |
8326 | case DW_TAG_imported_unit: | |
8327 | process_imported_unit_die (die, cu); | |
8328 | break; | |
8329 | ||
c906108c | 8330 | default: |
e7c27a73 | 8331 | new_symbol (die, NULL, cu); |
c906108c SS |
8332 | break; |
8333 | } | |
adde2bff DE |
8334 | |
8335 | do_cleanups (in_process); | |
c906108c | 8336 | } |
ca69b9e6 DE |
8337 | \f |
8338 | /* DWARF name computation. */ | |
c906108c | 8339 | |
94af9270 KS |
8340 | /* A helper function for dwarf2_compute_name which determines whether DIE |
8341 | needs to have the name of the scope prepended to the name listed in the | |
8342 | die. */ | |
8343 | ||
8344 | static int | |
8345 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8346 | { | |
1c809c68 TT |
8347 | struct attribute *attr; |
8348 | ||
94af9270 KS |
8349 | switch (die->tag) |
8350 | { | |
8351 | case DW_TAG_namespace: | |
8352 | case DW_TAG_typedef: | |
8353 | case DW_TAG_class_type: | |
8354 | case DW_TAG_interface_type: | |
8355 | case DW_TAG_structure_type: | |
8356 | case DW_TAG_union_type: | |
8357 | case DW_TAG_enumeration_type: | |
8358 | case DW_TAG_enumerator: | |
8359 | case DW_TAG_subprogram: | |
8360 | case DW_TAG_member: | |
74921315 | 8361 | case DW_TAG_imported_declaration: |
94af9270 KS |
8362 | return 1; |
8363 | ||
8364 | case DW_TAG_variable: | |
c2b0a229 | 8365 | case DW_TAG_constant: |
94af9270 KS |
8366 | /* We only need to prefix "globally" visible variables. These include |
8367 | any variable marked with DW_AT_external or any variable that | |
8368 | lives in a namespace. [Variables in anonymous namespaces | |
8369 | require prefixing, but they are not DW_AT_external.] */ | |
8370 | ||
8371 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
8372 | { | |
8373 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 8374 | |
94af9270 KS |
8375 | return die_needs_namespace (die_specification (die, &spec_cu), |
8376 | spec_cu); | |
8377 | } | |
8378 | ||
1c809c68 | 8379 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
8380 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
8381 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
8382 | return 0; |
8383 | /* A variable in a lexical block of some kind does not need a | |
8384 | namespace, even though in C++ such variables may be external | |
8385 | and have a mangled name. */ | |
8386 | if (die->parent->tag == DW_TAG_lexical_block | |
8387 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
8388 | || die->parent->tag == DW_TAG_catch_block |
8389 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
8390 | return 0; |
8391 | return 1; | |
94af9270 KS |
8392 | |
8393 | default: | |
8394 | return 0; | |
8395 | } | |
8396 | } | |
8397 | ||
98bfdba5 PA |
8398 | /* Retrieve the last character from a mem_file. */ |
8399 | ||
8400 | static void | |
8401 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
8402 | { | |
8403 | char *last_char_p = (char *) object; | |
8404 | ||
8405 | if (length > 0) | |
8406 | *last_char_p = buffer[length - 1]; | |
8407 | } | |
8408 | ||
94af9270 | 8409 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
8410 | compute the physname for the object, which include a method's: |
8411 | - formal parameters (C++/Java), | |
8412 | - receiver type (Go), | |
8413 | - return type (Java). | |
8414 | ||
8415 | The term "physname" is a bit confusing. | |
8416 | For C++, for example, it is the demangled name. | |
8417 | For Go, for example, it's the mangled name. | |
94af9270 | 8418 | |
af6b7be1 JB |
8419 | For Ada, return the DIE's linkage name rather than the fully qualified |
8420 | name. PHYSNAME is ignored.. | |
8421 | ||
94af9270 KS |
8422 | The result is allocated on the objfile_obstack and canonicalized. */ |
8423 | ||
8424 | static const char * | |
15d034d0 TT |
8425 | dwarf2_compute_name (const char *name, |
8426 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
8427 | int physname) |
8428 | { | |
bb5ed363 DE |
8429 | struct objfile *objfile = cu->objfile; |
8430 | ||
94af9270 KS |
8431 | if (name == NULL) |
8432 | name = dwarf2_name (die, cu); | |
8433 | ||
f55ee35c JK |
8434 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
8435 | compute it by typename_concat inside GDB. */ | |
8436 | if (cu->language == language_ada | |
8437 | || (cu->language == language_fortran && physname)) | |
8438 | { | |
8439 | /* For Ada unit, we prefer the linkage name over the name, as | |
8440 | the former contains the exported name, which the user expects | |
8441 | to be able to reference. Ideally, we want the user to be able | |
8442 | to reference this entity using either natural or linkage name, | |
8443 | but we haven't started looking at this enhancement yet. */ | |
8444 | struct attribute *attr; | |
8445 | ||
8446 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8447 | if (attr == NULL) | |
8448 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8449 | if (attr && DW_STRING (attr)) | |
8450 | return DW_STRING (attr); | |
8451 | } | |
8452 | ||
94af9270 KS |
8453 | /* These are the only languages we know how to qualify names in. */ |
8454 | if (name != NULL | |
f55ee35c JK |
8455 | && (cu->language == language_cplus || cu->language == language_java |
8456 | || cu->language == language_fortran)) | |
94af9270 KS |
8457 | { |
8458 | if (die_needs_namespace (die, cu)) | |
8459 | { | |
8460 | long length; | |
0d5cff50 | 8461 | const char *prefix; |
94af9270 | 8462 | struct ui_file *buf; |
34a68019 TT |
8463 | char *intermediate_name; |
8464 | const char *canonical_name = NULL; | |
94af9270 KS |
8465 | |
8466 | prefix = determine_prefix (die, cu); | |
8467 | buf = mem_fileopen (); | |
8468 | if (*prefix != '\0') | |
8469 | { | |
f55ee35c JK |
8470 | char *prefixed_name = typename_concat (NULL, prefix, name, |
8471 | physname, cu); | |
9a619af0 | 8472 | |
94af9270 KS |
8473 | fputs_unfiltered (prefixed_name, buf); |
8474 | xfree (prefixed_name); | |
8475 | } | |
8476 | else | |
62d5b8da | 8477 | fputs_unfiltered (name, buf); |
94af9270 | 8478 | |
98bfdba5 PA |
8479 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
8480 | as children with DW_TAG_template_type_param or | |
8481 | DW_TAG_value_type_param. If the latter, add them to the name | |
8482 | here. If the name already has template parameters, then | |
8483 | skip this step; some versions of GCC emit both, and | |
8484 | it is more efficient to use the pre-computed name. | |
8485 | ||
8486 | Something to keep in mind about this process: it is very | |
8487 | unlikely, or in some cases downright impossible, to produce | |
8488 | something that will match the mangled name of a function. | |
8489 | If the definition of the function has the same debug info, | |
8490 | we should be able to match up with it anyway. But fallbacks | |
8491 | using the minimal symbol, for instance to find a method | |
8492 | implemented in a stripped copy of libstdc++, will not work. | |
8493 | If we do not have debug info for the definition, we will have to | |
8494 | match them up some other way. | |
8495 | ||
8496 | When we do name matching there is a related problem with function | |
8497 | templates; two instantiated function templates are allowed to | |
8498 | differ only by their return types, which we do not add here. */ | |
8499 | ||
8500 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
8501 | { | |
8502 | struct attribute *attr; | |
8503 | struct die_info *child; | |
8504 | int first = 1; | |
8505 | ||
8506 | die->building_fullname = 1; | |
8507 | ||
8508 | for (child = die->child; child != NULL; child = child->sibling) | |
8509 | { | |
8510 | struct type *type; | |
12df843f | 8511 | LONGEST value; |
d521ce57 | 8512 | const gdb_byte *bytes; |
98bfdba5 PA |
8513 | struct dwarf2_locexpr_baton *baton; |
8514 | struct value *v; | |
8515 | ||
8516 | if (child->tag != DW_TAG_template_type_param | |
8517 | && child->tag != DW_TAG_template_value_param) | |
8518 | continue; | |
8519 | ||
8520 | if (first) | |
8521 | { | |
8522 | fputs_unfiltered ("<", buf); | |
8523 | first = 0; | |
8524 | } | |
8525 | else | |
8526 | fputs_unfiltered (", ", buf); | |
8527 | ||
8528 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
8529 | if (attr == NULL) | |
8530 | { | |
8531 | complaint (&symfile_complaints, | |
8532 | _("template parameter missing DW_AT_type")); | |
8533 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
8534 | continue; | |
8535 | } | |
8536 | type = die_type (child, cu); | |
8537 | ||
8538 | if (child->tag == DW_TAG_template_type_param) | |
8539 | { | |
79d43c61 | 8540 | c_print_type (type, "", buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
8541 | continue; |
8542 | } | |
8543 | ||
8544 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
8545 | if (attr == NULL) | |
8546 | { | |
8547 | complaint (&symfile_complaints, | |
3e43a32a MS |
8548 | _("template parameter missing " |
8549 | "DW_AT_const_value")); | |
98bfdba5 PA |
8550 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
8551 | continue; | |
8552 | } | |
8553 | ||
8554 | dwarf2_const_value_attr (attr, type, name, | |
8555 | &cu->comp_unit_obstack, cu, | |
8556 | &value, &bytes, &baton); | |
8557 | ||
8558 | if (TYPE_NOSIGN (type)) | |
8559 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
8560 | changed, this can use value_print instead. */ | |
8561 | c_printchar (value, type, buf); | |
8562 | else | |
8563 | { | |
8564 | struct value_print_options opts; | |
8565 | ||
8566 | if (baton != NULL) | |
8567 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
8568 | baton->data, | |
8569 | baton->size, | |
8570 | baton->per_cu); | |
8571 | else if (bytes != NULL) | |
8572 | { | |
8573 | v = allocate_value (type); | |
8574 | memcpy (value_contents_writeable (v), bytes, | |
8575 | TYPE_LENGTH (type)); | |
8576 | } | |
8577 | else | |
8578 | v = value_from_longest (type, value); | |
8579 | ||
3e43a32a MS |
8580 | /* Specify decimal so that we do not depend on |
8581 | the radix. */ | |
98bfdba5 PA |
8582 | get_formatted_print_options (&opts, 'd'); |
8583 | opts.raw = 1; | |
8584 | value_print (v, buf, &opts); | |
8585 | release_value (v); | |
8586 | value_free (v); | |
8587 | } | |
8588 | } | |
8589 | ||
8590 | die->building_fullname = 0; | |
8591 | ||
8592 | if (!first) | |
8593 | { | |
8594 | /* Close the argument list, with a space if necessary | |
8595 | (nested templates). */ | |
8596 | char last_char = '\0'; | |
8597 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
8598 | if (last_char == '>') | |
8599 | fputs_unfiltered (" >", buf); | |
8600 | else | |
8601 | fputs_unfiltered (">", buf); | |
8602 | } | |
8603 | } | |
8604 | ||
94af9270 KS |
8605 | /* For Java and C++ methods, append formal parameter type |
8606 | information, if PHYSNAME. */ | |
6e70227d | 8607 | |
94af9270 KS |
8608 | if (physname && die->tag == DW_TAG_subprogram |
8609 | && (cu->language == language_cplus | |
8610 | || cu->language == language_java)) | |
8611 | { | |
8612 | struct type *type = read_type_die (die, cu); | |
8613 | ||
79d43c61 TT |
8614 | c_type_print_args (type, buf, 1, cu->language, |
8615 | &type_print_raw_options); | |
94af9270 KS |
8616 | |
8617 | if (cu->language == language_java) | |
8618 | { | |
8619 | /* For java, we must append the return type to method | |
0963b4bd | 8620 | names. */ |
94af9270 KS |
8621 | if (die->tag == DW_TAG_subprogram) |
8622 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
79d43c61 | 8623 | 0, 0, &type_print_raw_options); |
94af9270 KS |
8624 | } |
8625 | else if (cu->language == language_cplus) | |
8626 | { | |
60430eff DJ |
8627 | /* Assume that an artificial first parameter is |
8628 | "this", but do not crash if it is not. RealView | |
8629 | marks unnamed (and thus unused) parameters as | |
8630 | artificial; there is no way to differentiate | |
8631 | the two cases. */ | |
94af9270 KS |
8632 | if (TYPE_NFIELDS (type) > 0 |
8633 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 8634 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
8635 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
8636 | 0)))) | |
94af9270 KS |
8637 | fputs_unfiltered (" const", buf); |
8638 | } | |
8639 | } | |
8640 | ||
34a68019 | 8641 | intermediate_name = ui_file_xstrdup (buf, &length); |
94af9270 KS |
8642 | ui_file_delete (buf); |
8643 | ||
8644 | if (cu->language == language_cplus) | |
34a68019 TT |
8645 | canonical_name |
8646 | = dwarf2_canonicalize_name (intermediate_name, cu, | |
8647 | &objfile->per_bfd->storage_obstack); | |
8648 | ||
8649 | /* If we only computed INTERMEDIATE_NAME, or if | |
8650 | INTERMEDIATE_NAME is already canonical, then we need to | |
8651 | copy it to the appropriate obstack. */ | |
8652 | if (canonical_name == NULL || canonical_name == intermediate_name) | |
8653 | name = obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
8654 | intermediate_name, | |
8655 | strlen (intermediate_name)); | |
8656 | else | |
8657 | name = canonical_name; | |
9a619af0 | 8658 | |
34a68019 | 8659 | xfree (intermediate_name); |
94af9270 KS |
8660 | } |
8661 | } | |
8662 | ||
8663 | return name; | |
8664 | } | |
8665 | ||
0114d602 DJ |
8666 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
8667 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 8668 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
8669 | not have a name. NAME may either be from a previous call to |
8670 | dwarf2_name or NULL. | |
8671 | ||
0963b4bd | 8672 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
8673 | |
8674 | static const char * | |
15d034d0 | 8675 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 8676 | { |
94af9270 KS |
8677 | return dwarf2_compute_name (name, die, cu, 0); |
8678 | } | |
0114d602 | 8679 | |
94af9270 KS |
8680 | /* Construct a physname for the given DIE in CU. NAME may either be |
8681 | from a previous call to dwarf2_name or NULL. The result will be | |
8682 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
8683 | name. | |
0114d602 | 8684 | |
94af9270 | 8685 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 8686 | |
94af9270 | 8687 | static const char * |
15d034d0 | 8688 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 8689 | { |
bb5ed363 | 8690 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
8691 | struct attribute *attr; |
8692 | const char *retval, *mangled = NULL, *canon = NULL; | |
8693 | struct cleanup *back_to; | |
8694 | int need_copy = 1; | |
8695 | ||
8696 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
8697 | on its own. */ | |
8698 | if (!die_needs_namespace (die, cu)) | |
8699 | return dwarf2_compute_name (name, die, cu, 1); | |
8700 | ||
8701 | back_to = make_cleanup (null_cleanup, NULL); | |
8702 | ||
8703 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8704 | if (!attr) | |
8705 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8706 | ||
8707 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
8708 | has computed. */ | |
8709 | if (attr && DW_STRING (attr)) | |
8710 | { | |
8711 | char *demangled; | |
8712 | ||
8713 | mangled = DW_STRING (attr); | |
8714 | ||
8715 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
8716 | type. It is easier for GDB users to search for such functions as | |
8717 | `name(params)' than `long name(params)'. In such case the minimal | |
8718 | symbol names do not match the full symbol names but for template | |
8719 | functions there is never a need to look up their definition from their | |
8720 | declaration so the only disadvantage remains the minimal symbol | |
8721 | variant `long name(params)' does not have the proper inferior type. | |
8722 | */ | |
8723 | ||
a766d390 DE |
8724 | if (cu->language == language_go) |
8725 | { | |
8726 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
8727 | new_symbol_full assumes we return the mangled name. | |
8728 | This just undoes that lie until things are cleaned up. */ | |
8729 | demangled = NULL; | |
8730 | } | |
8731 | else | |
8732 | { | |
8de20a37 TT |
8733 | demangled = gdb_demangle (mangled, |
8734 | (DMGL_PARAMS | DMGL_ANSI | |
8735 | | (cu->language == language_java | |
8736 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
8737 | : DMGL_RET_DROP))); | |
a766d390 | 8738 | } |
900e11f9 JK |
8739 | if (demangled) |
8740 | { | |
8741 | make_cleanup (xfree, demangled); | |
8742 | canon = demangled; | |
8743 | } | |
8744 | else | |
8745 | { | |
8746 | canon = mangled; | |
8747 | need_copy = 0; | |
8748 | } | |
8749 | } | |
8750 | ||
8751 | if (canon == NULL || check_physname) | |
8752 | { | |
8753 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
8754 | ||
8755 | if (canon != NULL && strcmp (physname, canon) != 0) | |
8756 | { | |
8757 | /* It may not mean a bug in GDB. The compiler could also | |
8758 | compute DW_AT_linkage_name incorrectly. But in such case | |
8759 | GDB would need to be bug-to-bug compatible. */ | |
8760 | ||
8761 | complaint (&symfile_complaints, | |
8762 | _("Computed physname <%s> does not match demangled <%s> " | |
8763 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
4262abfb JK |
8764 | physname, canon, mangled, die->offset.sect_off, |
8765 | objfile_name (objfile)); | |
900e11f9 JK |
8766 | |
8767 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
8768 | is available here - over computed PHYSNAME. It is safer | |
8769 | against both buggy GDB and buggy compilers. */ | |
8770 | ||
8771 | retval = canon; | |
8772 | } | |
8773 | else | |
8774 | { | |
8775 | retval = physname; | |
8776 | need_copy = 0; | |
8777 | } | |
8778 | } | |
8779 | else | |
8780 | retval = canon; | |
8781 | ||
8782 | if (need_copy) | |
34a68019 TT |
8783 | retval = obstack_copy0 (&objfile->per_bfd->storage_obstack, |
8784 | retval, strlen (retval)); | |
900e11f9 JK |
8785 | |
8786 | do_cleanups (back_to); | |
8787 | return retval; | |
0114d602 DJ |
8788 | } |
8789 | ||
74921315 KS |
8790 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
8791 | a new symbol for it. | |
8792 | ||
8793 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
8794 | ||
8795 | static int | |
8796 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
8797 | { | |
8798 | struct attribute *attr; | |
8799 | ||
8800 | /* If the die does not have a name, this is not a namespace | |
8801 | alias. */ | |
8802 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8803 | if (attr != NULL) | |
8804 | { | |
8805 | int num; | |
8806 | struct die_info *d = die; | |
8807 | struct dwarf2_cu *imported_cu = cu; | |
8808 | ||
8809 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
8810 | keep inspecting DIEs until we hit the underlying import. */ | |
8811 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
8812 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
8813 | { | |
8814 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
8815 | if (attr == NULL) | |
8816 | break; | |
8817 | ||
8818 | d = follow_die_ref (d, attr, &imported_cu); | |
8819 | if (d->tag != DW_TAG_imported_declaration) | |
8820 | break; | |
8821 | } | |
8822 | ||
8823 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
8824 | { | |
8825 | complaint (&symfile_complaints, | |
8826 | _("DIE at 0x%x has too many recursively imported " | |
8827 | "declarations"), d->offset.sect_off); | |
8828 | return 0; | |
8829 | } | |
8830 | ||
8831 | if (attr != NULL) | |
8832 | { | |
8833 | struct type *type; | |
8834 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
8835 | ||
8836 | type = get_die_type_at_offset (offset, cu->per_cu); | |
8837 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
8838 | { | |
8839 | /* This declaration is a global namespace alias. Add | |
8840 | a symbol for it whose type is the aliased namespace. */ | |
8841 | new_symbol (die, type, cu); | |
8842 | return 1; | |
8843 | } | |
8844 | } | |
8845 | } | |
8846 | ||
8847 | return 0; | |
8848 | } | |
8849 | ||
27aa8d6a SW |
8850 | /* Read the import statement specified by the given die and record it. */ |
8851 | ||
8852 | static void | |
8853 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
8854 | { | |
bb5ed363 | 8855 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 8856 | struct attribute *import_attr; |
32019081 | 8857 | struct die_info *imported_die, *child_die; |
de4affc9 | 8858 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 8859 | const char *imported_name; |
794684b6 | 8860 | const char *imported_name_prefix; |
13387711 SW |
8861 | const char *canonical_name; |
8862 | const char *import_alias; | |
8863 | const char *imported_declaration = NULL; | |
794684b6 | 8864 | const char *import_prefix; |
32019081 JK |
8865 | VEC (const_char_ptr) *excludes = NULL; |
8866 | struct cleanup *cleanups; | |
13387711 | 8867 | |
27aa8d6a SW |
8868 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
8869 | if (import_attr == NULL) | |
8870 | { | |
8871 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8872 | dwarf_tag_name (die->tag)); | |
8873 | return; | |
8874 | } | |
8875 | ||
de4affc9 CC |
8876 | imported_cu = cu; |
8877 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
8878 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
8879 | if (imported_name == NULL) |
8880 | { | |
8881 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
8882 | ||
8883 | The import in the following code: | |
8884 | namespace A | |
8885 | { | |
8886 | typedef int B; | |
8887 | } | |
8888 | ||
8889 | int main () | |
8890 | { | |
8891 | using A::B; | |
8892 | B b; | |
8893 | return b; | |
8894 | } | |
8895 | ||
8896 | ... | |
8897 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
8898 | <52> DW_AT_decl_file : 1 | |
8899 | <53> DW_AT_decl_line : 6 | |
8900 | <54> DW_AT_import : <0x75> | |
8901 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
8902 | <59> DW_AT_name : B | |
8903 | <5b> DW_AT_decl_file : 1 | |
8904 | <5c> DW_AT_decl_line : 2 | |
8905 | <5d> DW_AT_type : <0x6e> | |
8906 | ... | |
8907 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
8908 | <76> DW_AT_byte_size : 4 | |
8909 | <77> DW_AT_encoding : 5 (signed) | |
8910 | ||
8911 | imports the wrong die ( 0x75 instead of 0x58 ). | |
8912 | This case will be ignored until the gcc bug is fixed. */ | |
8913 | return; | |
8914 | } | |
8915 | ||
82856980 SW |
8916 | /* Figure out the local name after import. */ |
8917 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 8918 | |
794684b6 SW |
8919 | /* Figure out where the statement is being imported to. */ |
8920 | import_prefix = determine_prefix (die, cu); | |
8921 | ||
8922 | /* Figure out what the scope of the imported die is and prepend it | |
8923 | to the name of the imported die. */ | |
de4affc9 | 8924 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 8925 | |
f55ee35c JK |
8926 | if (imported_die->tag != DW_TAG_namespace |
8927 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 8928 | { |
13387711 SW |
8929 | imported_declaration = imported_name; |
8930 | canonical_name = imported_name_prefix; | |
794684b6 | 8931 | } |
13387711 | 8932 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 TT |
8933 | canonical_name = obconcat (&objfile->objfile_obstack, |
8934 | imported_name_prefix, "::", imported_name, | |
8935 | (char *) NULL); | |
13387711 SW |
8936 | else |
8937 | canonical_name = imported_name; | |
794684b6 | 8938 | |
32019081 JK |
8939 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
8940 | ||
8941 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
8942 | for (child_die = die->child; child_die && child_die->tag; | |
8943 | child_die = sibling_die (child_die)) | |
8944 | { | |
8945 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
8946 | represented by an imported module entry with an import attribute | |
8947 | referring to the module and owned entries corresponding to those | |
8948 | entities that are renamed as part of being imported. */ | |
8949 | ||
8950 | if (child_die->tag != DW_TAG_imported_declaration) | |
8951 | { | |
8952 | complaint (&symfile_complaints, | |
8953 | _("child DW_TAG_imported_declaration expected " | |
8954 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 8955 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8956 | continue; |
8957 | } | |
8958 | ||
8959 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
8960 | if (import_attr == NULL) | |
8961 | { | |
8962 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8963 | dwarf_tag_name (child_die->tag)); | |
8964 | continue; | |
8965 | } | |
8966 | ||
8967 | imported_cu = cu; | |
8968 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
8969 | &imported_cu); | |
8970 | imported_name = dwarf2_name (imported_die, imported_cu); | |
8971 | if (imported_name == NULL) | |
8972 | { | |
8973 | complaint (&symfile_complaints, | |
8974 | _("child DW_TAG_imported_declaration has unknown " | |
8975 | "imported name - DIE at 0x%x [in module %s]"), | |
4262abfb | 8976 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8977 | continue; |
8978 | } | |
8979 | ||
8980 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
8981 | ||
8982 | process_die (child_die, cu); | |
8983 | } | |
8984 | ||
c0cc3a76 SW |
8985 | cp_add_using_directive (import_prefix, |
8986 | canonical_name, | |
8987 | import_alias, | |
13387711 | 8988 | imported_declaration, |
32019081 | 8989 | excludes, |
12aaed36 | 8990 | 0, |
bb5ed363 | 8991 | &objfile->objfile_obstack); |
32019081 JK |
8992 | |
8993 | do_cleanups (cleanups); | |
27aa8d6a SW |
8994 | } |
8995 | ||
f4dc4d17 | 8996 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 8997 | |
cb1df416 DJ |
8998 | static void |
8999 | free_cu_line_header (void *arg) | |
9000 | { | |
9001 | struct dwarf2_cu *cu = arg; | |
9002 | ||
9003 | free_line_header (cu->line_header); | |
9004 | cu->line_header = NULL; | |
9005 | } | |
9006 | ||
1b80a9fa JK |
9007 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
9008 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
9009 | this, it was first present in GCC release 4.3.0. */ | |
9010 | ||
9011 | static int | |
9012 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
9013 | { | |
9014 | if (!cu->checked_producer) | |
9015 | check_producer (cu); | |
9016 | ||
9017 | return cu->producer_is_gcc_lt_4_3; | |
9018 | } | |
9019 | ||
9291a0cd TT |
9020 | static void |
9021 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 9022 | const char **name, const char **comp_dir) |
9291a0cd TT |
9023 | { |
9024 | struct attribute *attr; | |
9025 | ||
9026 | *name = NULL; | |
9027 | *comp_dir = NULL; | |
9028 | ||
9029 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
9030 | is not a source language identifier. */ | |
9031 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
9032 | if (attr) | |
9033 | { | |
9034 | *name = DW_STRING (attr); | |
9035 | } | |
9036 | ||
9037 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
9038 | if (attr) | |
9039 | *comp_dir = DW_STRING (attr); | |
1b80a9fa JK |
9040 | else if (producer_is_gcc_lt_4_3 (cu) && *name != NULL |
9041 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 9042 | { |
15d034d0 TT |
9043 | char *d = ldirname (*name); |
9044 | ||
9045 | *comp_dir = d; | |
9046 | if (d != NULL) | |
9047 | make_cleanup (xfree, d); | |
9291a0cd TT |
9048 | } |
9049 | if (*comp_dir != NULL) | |
9050 | { | |
9051 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
9052 | directory, get rid of it. */ | |
9053 | char *cp = strchr (*comp_dir, ':'); | |
9054 | ||
9055 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
9056 | *comp_dir = cp + 1; | |
9057 | } | |
9058 | ||
9059 | if (*name == NULL) | |
9060 | *name = "<unknown>"; | |
9061 | } | |
9062 | ||
f4dc4d17 DE |
9063 | /* Handle DW_AT_stmt_list for a compilation unit. |
9064 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
9065 | COMP_DIR is the compilation directory. LOWPC is passed to |
9066 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
9067 | |
9068 | static void | |
9069 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 9070 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 9071 | { |
527f3840 | 9072 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 9073 | struct attribute *attr; |
527f3840 JK |
9074 | unsigned int line_offset; |
9075 | struct line_header line_header_local; | |
9076 | hashval_t line_header_local_hash; | |
9077 | unsigned u; | |
9078 | void **slot; | |
9079 | int decode_mapping; | |
2ab95328 | 9080 | |
f4dc4d17 DE |
9081 | gdb_assert (! cu->per_cu->is_debug_types); |
9082 | ||
2ab95328 | 9083 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
9084 | if (attr == NULL) |
9085 | return; | |
9086 | ||
9087 | line_offset = DW_UNSND (attr); | |
9088 | ||
9089 | /* The line header hash table is only created if needed (it exists to | |
9090 | prevent redundant reading of the line table for partial_units). | |
9091 | If we're given a partial_unit, we'll need it. If we're given a | |
9092 | compile_unit, then use the line header hash table if it's already | |
9093 | created, but don't create one just yet. */ | |
9094 | ||
9095 | if (dwarf2_per_objfile->line_header_hash == NULL | |
9096 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 9097 | { |
527f3840 JK |
9098 | dwarf2_per_objfile->line_header_hash |
9099 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
9100 | line_header_eq_voidp, | |
9101 | free_line_header_voidp, | |
9102 | &objfile->objfile_obstack, | |
9103 | hashtab_obstack_allocate, | |
9104 | dummy_obstack_deallocate); | |
9105 | } | |
2ab95328 | 9106 | |
527f3840 JK |
9107 | line_header_local.offset.sect_off = line_offset; |
9108 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; | |
9109 | line_header_local_hash = line_header_hash (&line_header_local); | |
9110 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
9111 | { | |
9112 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9113 | &line_header_local, | |
9114 | line_header_local_hash, NO_INSERT); | |
9115 | ||
9116 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
9117 | is not present in *SLOT (since if there is something in *SLOT then | |
9118 | it will be for a partial_unit). */ | |
9119 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 9120 | { |
527f3840 JK |
9121 | gdb_assert (*slot != NULL); |
9122 | cu->line_header = *slot; | |
9123 | return; | |
dee91e82 | 9124 | } |
2ab95328 | 9125 | } |
527f3840 JK |
9126 | |
9127 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
9128 | We always have to call also dwarf_decode_lines for it. */ | |
9129 | cu->line_header = dwarf_decode_line_header (line_offset, cu); | |
9130 | if (cu->line_header == NULL) | |
9131 | return; | |
9132 | ||
9133 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
9134 | slot = NULL; | |
9135 | else | |
9136 | { | |
9137 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9138 | &line_header_local, | |
9139 | line_header_local_hash, INSERT); | |
9140 | gdb_assert (slot != NULL); | |
9141 | } | |
9142 | if (slot != NULL && *slot == NULL) | |
9143 | { | |
9144 | /* This newly decoded line number information unit will be owned | |
9145 | by line_header_hash hash table. */ | |
9146 | *slot = cu->line_header; | |
9147 | } | |
9148 | else | |
9149 | { | |
9150 | /* We cannot free any current entry in (*slot) as that struct line_header | |
9151 | may be already used by multiple CUs. Create only temporary decoded | |
9152 | line_header for this CU - it may happen at most once for each line | |
9153 | number information unit. And if we're not using line_header_hash | |
9154 | then this is what we want as well. */ | |
9155 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
9156 | make_cleanup (free_cu_line_header, cu); | |
9157 | } | |
9158 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
9159 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
9160 | decode_mapping); | |
2ab95328 TT |
9161 | } |
9162 | ||
95554aad | 9163 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 9164 | |
c906108c | 9165 | static void |
e7c27a73 | 9166 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9167 | { |
dee91e82 | 9168 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 9169 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
debd256d | 9170 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 9171 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
9172 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
9173 | struct attribute *attr; | |
15d034d0 TT |
9174 | const char *name = NULL; |
9175 | const char *comp_dir = NULL; | |
c906108c SS |
9176 | struct die_info *child_die; |
9177 | bfd *abfd = objfile->obfd; | |
e142c38c | 9178 | CORE_ADDR baseaddr; |
6e70227d | 9179 | |
e142c38c | 9180 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 9181 | |
fae299cd | 9182 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
9183 | |
9184 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
9185 | from finish_block. */ | |
2acceee2 | 9186 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 9187 | lowpc = highpc; |
3e29f34a | 9188 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 9189 | |
9291a0cd | 9190 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 9191 | |
95554aad | 9192 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 9193 | |
f4b8a18d KW |
9194 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
9195 | standardised yet. As a workaround for the language detection we fall | |
9196 | back to the DW_AT_producer string. */ | |
9197 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
9198 | cu->language = language_opencl; | |
9199 | ||
3019eac3 DE |
9200 | /* Similar hack for Go. */ |
9201 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
9202 | set_cu_language (DW_LANG_Go, cu); | |
9203 | ||
f4dc4d17 | 9204 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
9205 | |
9206 | /* Decode line number information if present. We do this before | |
9207 | processing child DIEs, so that the line header table is available | |
9208 | for DW_AT_decl_file. */ | |
c3b7b696 | 9209 | handle_DW_AT_stmt_list (die, cu, comp_dir, lowpc); |
3019eac3 DE |
9210 | |
9211 | /* Process all dies in compilation unit. */ | |
9212 | if (die->child != NULL) | |
9213 | { | |
9214 | child_die = die->child; | |
9215 | while (child_die && child_die->tag) | |
9216 | { | |
9217 | process_die (child_die, cu); | |
9218 | child_die = sibling_die (child_die); | |
9219 | } | |
9220 | } | |
9221 | ||
9222 | /* Decode macro information, if present. Dwarf 2 macro information | |
9223 | refers to information in the line number info statement program | |
9224 | header, so we can only read it if we've read the header | |
9225 | successfully. */ | |
9226 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
9227 | if (attr && cu->line_header) | |
9228 | { | |
9229 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
9230 | complaint (&symfile_complaints, | |
9231 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
9232 | ||
43f3e411 | 9233 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
9234 | } |
9235 | else | |
9236 | { | |
9237 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
9238 | if (attr && cu->line_header) | |
9239 | { | |
9240 | unsigned int macro_offset = DW_UNSND (attr); | |
9241 | ||
43f3e411 | 9242 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
9243 | } |
9244 | } | |
9245 | ||
9246 | do_cleanups (back_to); | |
9247 | } | |
9248 | ||
f4dc4d17 DE |
9249 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
9250 | Create the set of symtabs used by this TU, or if this TU is sharing | |
9251 | symtabs with another TU and the symtabs have already been created | |
9252 | then restore those symtabs in the line header. | |
9253 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
9254 | |
9255 | static void | |
f4dc4d17 | 9256 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 9257 | { |
f4dc4d17 DE |
9258 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9259 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
9260 | struct type_unit_group *tu_group; | |
9261 | int first_time; | |
9262 | struct line_header *lh; | |
3019eac3 | 9263 | struct attribute *attr; |
f4dc4d17 | 9264 | unsigned int i, line_offset; |
0186c6a7 | 9265 | struct signatured_type *sig_type; |
3019eac3 | 9266 | |
f4dc4d17 | 9267 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 9268 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 9269 | |
f4dc4d17 | 9270 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 9271 | |
f4dc4d17 | 9272 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 9273 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
9274 | if (sig_type->type_unit_group == NULL) |
9275 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
9276 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
9277 | |
9278 | /* If we've already processed this stmt_list there's no real need to | |
9279 | do it again, we could fake it and just recreate the part we need | |
9280 | (file name,index -> symtab mapping). If data shows this optimization | |
9281 | is useful we can do it then. */ | |
43f3e411 | 9282 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
9283 | |
9284 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
9285 | debug info. */ | |
9286 | lh = NULL; | |
9287 | if (attr != NULL) | |
3019eac3 | 9288 | { |
f4dc4d17 DE |
9289 | line_offset = DW_UNSND (attr); |
9290 | lh = dwarf_decode_line_header (line_offset, cu); | |
9291 | } | |
9292 | if (lh == NULL) | |
9293 | { | |
9294 | if (first_time) | |
9295 | dwarf2_start_symtab (cu, "", NULL, 0); | |
9296 | else | |
9297 | { | |
9298 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 9299 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 9300 | } |
f4dc4d17 | 9301 | return; |
3019eac3 DE |
9302 | } |
9303 | ||
f4dc4d17 DE |
9304 | cu->line_header = lh; |
9305 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 9306 | |
f4dc4d17 DE |
9307 | if (first_time) |
9308 | { | |
43f3e411 | 9309 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 9310 | |
f4dc4d17 DE |
9311 | tu_group->num_symtabs = lh->num_file_names; |
9312 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 9313 | |
f4dc4d17 DE |
9314 | for (i = 0; i < lh->num_file_names; ++i) |
9315 | { | |
d521ce57 | 9316 | const char *dir = NULL; |
f4dc4d17 | 9317 | struct file_entry *fe = &lh->file_names[i]; |
3019eac3 | 9318 | |
f4dc4d17 DE |
9319 | if (fe->dir_index) |
9320 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4d663531 | 9321 | dwarf2_start_subfile (fe->name, dir); |
3019eac3 | 9322 | |
f4dc4d17 DE |
9323 | if (current_subfile->symtab == NULL) |
9324 | { | |
9325 | /* NOTE: start_subfile will recognize when it's been passed | |
9326 | a file it has already seen. So we can't assume there's a | |
43f3e411 | 9327 | simple mapping from lh->file_names to subfiles, plus |
f4dc4d17 | 9328 | lh->file_names may contain dups. */ |
43f3e411 DE |
9329 | current_subfile->symtab |
9330 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
9331 | } |
9332 | ||
9333 | fe->symtab = current_subfile->symtab; | |
9334 | tu_group->symtabs[i] = fe->symtab; | |
9335 | } | |
9336 | } | |
9337 | else | |
3019eac3 | 9338 | { |
0ab9ce85 | 9339 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 DE |
9340 | |
9341 | for (i = 0; i < lh->num_file_names; ++i) | |
9342 | { | |
9343 | struct file_entry *fe = &lh->file_names[i]; | |
9344 | ||
9345 | fe->symtab = tu_group->symtabs[i]; | |
9346 | } | |
3019eac3 DE |
9347 | } |
9348 | ||
f4dc4d17 DE |
9349 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
9350 | so they don't have a "real" (so to speak) symtab anyway. | |
9351 | There is later code that will assign the main symtab to all symbols | |
9352 | that don't have one. We need to handle the case of a symbol with a | |
9353 | missing symtab (DW_AT_decl_file) anyway. */ | |
9354 | } | |
3019eac3 | 9355 | |
f4dc4d17 DE |
9356 | /* Process DW_TAG_type_unit. |
9357 | For TUs we want to skip the first top level sibling if it's not the | |
9358 | actual type being defined by this TU. In this case the first top | |
9359 | level sibling is there to provide context only. */ | |
3019eac3 | 9360 | |
f4dc4d17 DE |
9361 | static void |
9362 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9363 | { | |
9364 | struct die_info *child_die; | |
3019eac3 | 9365 | |
f4dc4d17 DE |
9366 | prepare_one_comp_unit (cu, die, language_minimal); |
9367 | ||
9368 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
9369 | We do this before processing child DIEs, so that the line header table | |
9370 | is available for DW_AT_decl_file. */ | |
9371 | setup_type_unit_groups (die, cu); | |
9372 | ||
9373 | if (die->child != NULL) | |
9374 | { | |
9375 | child_die = die->child; | |
9376 | while (child_die && child_die->tag) | |
9377 | { | |
9378 | process_die (child_die, cu); | |
9379 | child_die = sibling_die (child_die); | |
9380 | } | |
9381 | } | |
3019eac3 DE |
9382 | } |
9383 | \f | |
80626a55 DE |
9384 | /* DWO/DWP files. |
9385 | ||
9386 | http://gcc.gnu.org/wiki/DebugFission | |
9387 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
9388 | ||
9389 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
9390 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
9391 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
9392 | |
9393 | static hashval_t | |
9394 | hash_dwo_file (const void *item) | |
9395 | { | |
9396 | const struct dwo_file *dwo_file = item; | |
a2ce51a0 | 9397 | hashval_t hash; |
3019eac3 | 9398 | |
a2ce51a0 DE |
9399 | hash = htab_hash_string (dwo_file->dwo_name); |
9400 | if (dwo_file->comp_dir != NULL) | |
9401 | hash += htab_hash_string (dwo_file->comp_dir); | |
9402 | return hash; | |
3019eac3 DE |
9403 | } |
9404 | ||
9405 | static int | |
9406 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
9407 | { | |
9408 | const struct dwo_file *lhs = item_lhs; | |
9409 | const struct dwo_file *rhs = item_rhs; | |
9410 | ||
a2ce51a0 DE |
9411 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
9412 | return 0; | |
9413 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
9414 | return lhs->comp_dir == rhs->comp_dir; | |
9415 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
9416 | } |
9417 | ||
9418 | /* Allocate a hash table for DWO files. */ | |
9419 | ||
9420 | static htab_t | |
9421 | allocate_dwo_file_hash_table (void) | |
9422 | { | |
9423 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9424 | ||
9425 | return htab_create_alloc_ex (41, | |
9426 | hash_dwo_file, | |
9427 | eq_dwo_file, | |
9428 | NULL, | |
9429 | &objfile->objfile_obstack, | |
9430 | hashtab_obstack_allocate, | |
9431 | dummy_obstack_deallocate); | |
9432 | } | |
9433 | ||
80626a55 DE |
9434 | /* Lookup DWO file DWO_NAME. */ |
9435 | ||
9436 | static void ** | |
0ac5b59e | 9437 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
9438 | { |
9439 | struct dwo_file find_entry; | |
9440 | void **slot; | |
9441 | ||
9442 | if (dwarf2_per_objfile->dwo_files == NULL) | |
9443 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
9444 | ||
9445 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
9446 | find_entry.dwo_name = dwo_name; |
9447 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
9448 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
9449 | ||
9450 | return slot; | |
9451 | } | |
9452 | ||
3019eac3 DE |
9453 | static hashval_t |
9454 | hash_dwo_unit (const void *item) | |
9455 | { | |
9456 | const struct dwo_unit *dwo_unit = item; | |
9457 | ||
9458 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
9459 | return dwo_unit->signature; | |
9460 | } | |
9461 | ||
9462 | static int | |
9463 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
9464 | { | |
9465 | const struct dwo_unit *lhs = item_lhs; | |
9466 | const struct dwo_unit *rhs = item_rhs; | |
9467 | ||
9468 | /* The signature is assumed to be unique within the DWO file. | |
9469 | So while object file CU dwo_id's always have the value zero, | |
9470 | that's OK, assuming each object file DWO file has only one CU, | |
9471 | and that's the rule for now. */ | |
9472 | return lhs->signature == rhs->signature; | |
9473 | } | |
9474 | ||
9475 | /* Allocate a hash table for DWO CUs,TUs. | |
9476 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
9477 | ||
9478 | static htab_t | |
9479 | allocate_dwo_unit_table (struct objfile *objfile) | |
9480 | { | |
9481 | /* Start out with a pretty small number. | |
9482 | Generally DWO files contain only one CU and maybe some TUs. */ | |
9483 | return htab_create_alloc_ex (3, | |
9484 | hash_dwo_unit, | |
9485 | eq_dwo_unit, | |
9486 | NULL, | |
9487 | &objfile->objfile_obstack, | |
9488 | hashtab_obstack_allocate, | |
9489 | dummy_obstack_deallocate); | |
9490 | } | |
9491 | ||
80626a55 | 9492 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 9493 | |
19c3d4c9 | 9494 | struct create_dwo_cu_data |
3019eac3 DE |
9495 | { |
9496 | struct dwo_file *dwo_file; | |
19c3d4c9 | 9497 | struct dwo_unit dwo_unit; |
3019eac3 DE |
9498 | }; |
9499 | ||
19c3d4c9 | 9500 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
9501 | |
9502 | static void | |
19c3d4c9 DE |
9503 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
9504 | const gdb_byte *info_ptr, | |
9505 | struct die_info *comp_unit_die, | |
9506 | int has_children, | |
9507 | void *datap) | |
3019eac3 DE |
9508 | { |
9509 | struct dwarf2_cu *cu = reader->cu; | |
9510 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9511 | sect_offset offset = cu->per_cu->offset; | |
8a0459fd | 9512 | struct dwarf2_section_info *section = cu->per_cu->section; |
19c3d4c9 | 9513 | struct create_dwo_cu_data *data = datap; |
3019eac3 | 9514 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 9515 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 9516 | struct attribute *attr; |
3019eac3 DE |
9517 | |
9518 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
9519 | if (attr == NULL) | |
9520 | { | |
19c3d4c9 DE |
9521 | complaint (&symfile_complaints, |
9522 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
9523 | " its dwo_id [in module %s]"), | |
9524 | offset.sect_off, dwo_file->dwo_name); | |
3019eac3 DE |
9525 | return; |
9526 | } | |
9527 | ||
3019eac3 DE |
9528 | dwo_unit->dwo_file = dwo_file; |
9529 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 9530 | dwo_unit->section = section; |
3019eac3 DE |
9531 | dwo_unit->offset = offset; |
9532 | dwo_unit->length = cu->per_cu->length; | |
9533 | ||
09406207 | 9534 | if (dwarf2_read_debug) |
4031ecc5 DE |
9535 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9536 | offset.sect_off, hex_string (dwo_unit->signature)); | |
3019eac3 DE |
9537 | } |
9538 | ||
19c3d4c9 DE |
9539 | /* Create the dwo_unit for the lone CU in DWO_FILE. |
9540 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 | 9541 | |
19c3d4c9 DE |
9542 | static struct dwo_unit * |
9543 | create_dwo_cu (struct dwo_file *dwo_file) | |
3019eac3 DE |
9544 | { |
9545 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9546 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
9547 | bfd *abfd; | |
9548 | htab_t cu_htab; | |
d521ce57 | 9549 | const gdb_byte *info_ptr, *end_ptr; |
19c3d4c9 DE |
9550 | struct create_dwo_cu_data create_dwo_cu_data; |
9551 | struct dwo_unit *dwo_unit; | |
3019eac3 DE |
9552 | |
9553 | dwarf2_read_section (objfile, section); | |
9554 | info_ptr = section->buffer; | |
9555 | ||
9556 | if (info_ptr == NULL) | |
9557 | return NULL; | |
9558 | ||
9559 | /* We can't set abfd until now because the section may be empty or | |
9560 | not present, in which case section->asection will be NULL. */ | |
a32a8923 | 9561 | abfd = get_section_bfd_owner (section); |
3019eac3 | 9562 | |
09406207 | 9563 | if (dwarf2_read_debug) |
19c3d4c9 DE |
9564 | { |
9565 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
a32a8923 DE |
9566 | get_section_name (section), |
9567 | get_section_file_name (section)); | |
19c3d4c9 | 9568 | } |
3019eac3 | 9569 | |
19c3d4c9 DE |
9570 | create_dwo_cu_data.dwo_file = dwo_file; |
9571 | dwo_unit = NULL; | |
3019eac3 DE |
9572 | |
9573 | end_ptr = info_ptr + section->size; | |
9574 | while (info_ptr < end_ptr) | |
9575 | { | |
9576 | struct dwarf2_per_cu_data per_cu; | |
9577 | ||
19c3d4c9 DE |
9578 | memset (&create_dwo_cu_data.dwo_unit, 0, |
9579 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
9580 | memset (&per_cu, 0, sizeof (per_cu)); |
9581 | per_cu.objfile = objfile; | |
9582 | per_cu.is_debug_types = 0; | |
9583 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 9584 | per_cu.section = section; |
3019eac3 | 9585 | |
33e80786 | 9586 | init_cutu_and_read_dies_no_follow (&per_cu, dwo_file, |
19c3d4c9 DE |
9587 | create_dwo_cu_reader, |
9588 | &create_dwo_cu_data); | |
9589 | ||
9590 | if (create_dwo_cu_data.dwo_unit.dwo_file != NULL) | |
9591 | { | |
9592 | /* If we've already found one, complain. We only support one | |
9593 | because having more than one requires hacking the dwo_name of | |
9594 | each to match, which is highly unlikely to happen. */ | |
9595 | if (dwo_unit != NULL) | |
9596 | { | |
9597 | complaint (&symfile_complaints, | |
9598 | _("Multiple CUs in DWO file %s [in module %s]"), | |
4262abfb | 9599 | dwo_file->dwo_name, objfile_name (objfile)); |
19c3d4c9 DE |
9600 | break; |
9601 | } | |
9602 | ||
9603 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9604 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
9605 | } | |
3019eac3 DE |
9606 | |
9607 | info_ptr += per_cu.length; | |
9608 | } | |
9609 | ||
19c3d4c9 | 9610 | return dwo_unit; |
3019eac3 DE |
9611 | } |
9612 | ||
80626a55 DE |
9613 | /* DWP file .debug_{cu,tu}_index section format: |
9614 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
9615 | ||
d2415c6c DE |
9616 | DWP Version 1: |
9617 | ||
80626a55 DE |
9618 | Both index sections have the same format, and serve to map a 64-bit |
9619 | signature to a set of section numbers. Each section begins with a header, | |
9620 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
9621 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
9622 | aligned at 8-byte boundaries in the file. | |
9623 | ||
d2415c6c DE |
9624 | The index section header consists of: |
9625 | ||
9626 | V, 32 bit version number | |
9627 | -, 32 bits unused | |
9628 | N, 32 bit number of compilation units or type units in the index | |
9629 | M, 32 bit number of slots in the hash table | |
80626a55 | 9630 | |
d2415c6c | 9631 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 9632 | |
d2415c6c DE |
9633 | The hash table begins at offset 16 in the section, and consists of an array |
9634 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
9635 | order of the application binary). Unused slots in the hash table are 0. | |
9636 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 9637 | |
d2415c6c DE |
9638 | The parallel table begins immediately after the hash table |
9639 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
9640 | array of 32-bit indexes (using the byte order of the application binary), | |
9641 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
9642 | table contains a 32-bit index into the pool of section numbers. For unused | |
9643 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 9644 | |
73869dc2 DE |
9645 | The pool of section numbers begins immediately following the hash table |
9646 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
9647 | section numbers consists of an array of 32-bit words (using the byte order | |
9648 | of the application binary). Each item in the array is indexed starting | |
9649 | from 0. The hash table entry provides the index of the first section | |
9650 | number in the set. Additional section numbers in the set follow, and the | |
9651 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
9652 | ||
9653 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
9654 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
9655 | be the second entry. Other members of the set may follow in any order. | |
9656 | ||
9657 | --- | |
9658 | ||
9659 | DWP Version 2: | |
9660 | ||
9661 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
9662 | and the entries in the index tables are now offsets into these sections. | |
9663 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
9664 | section. | |
9665 | ||
9666 | Index Section Contents: | |
9667 | Header | |
9668 | Hash Table of Signatures dwp_hash_table.hash_table | |
9669 | Parallel Table of Indices dwp_hash_table.unit_table | |
9670 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
9671 | Table of Section Sizes dwp_hash_table.v2.sizes | |
9672 | ||
9673 | The index section header consists of: | |
9674 | ||
9675 | V, 32 bit version number | |
9676 | L, 32 bit number of columns in the table of section offsets | |
9677 | N, 32 bit number of compilation units or type units in the index | |
9678 | M, 32 bit number of slots in the hash table | |
9679 | ||
9680 | Numbers are recorded using the byte order of the application binary. | |
9681 | ||
9682 | The hash table has the same format as version 1. | |
9683 | The parallel table of indices has the same format as version 1, | |
9684 | except that the entries are origin-1 indices into the table of sections | |
9685 | offsets and the table of section sizes. | |
9686 | ||
9687 | The table of offsets begins immediately following the parallel table | |
9688 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
9689 | a two-dimensional array of 32-bit words (using the byte order of the | |
9690 | application binary), with L columns and N+1 rows, in row-major order. | |
9691 | Each row in the array is indexed starting from 0. The first row provides | |
9692 | a key to the remaining rows: each column in this row provides an identifier | |
9693 | for a debug section, and the offsets in the same column of subsequent rows | |
9694 | refer to that section. The section identifiers are: | |
9695 | ||
9696 | DW_SECT_INFO 1 .debug_info.dwo | |
9697 | DW_SECT_TYPES 2 .debug_types.dwo | |
9698 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
9699 | DW_SECT_LINE 4 .debug_line.dwo | |
9700 | DW_SECT_LOC 5 .debug_loc.dwo | |
9701 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
9702 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
9703 | DW_SECT_MACRO 8 .debug_macro.dwo | |
9704 | ||
9705 | The offsets provided by the CU and TU index sections are the base offsets | |
9706 | for the contributions made by each CU or TU to the corresponding section | |
9707 | in the package file. Each CU and TU header contains an abbrev_offset | |
9708 | field, used to find the abbreviations table for that CU or TU within the | |
9709 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
9710 | be interpreted as relative to the base offset given in the index section. | |
9711 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
9712 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
9713 | and offsets into other debug sections obtained from DWARF attributes should | |
9714 | also be interpreted as relative to the corresponding base offset. | |
9715 | ||
9716 | The table of sizes begins immediately following the table of offsets. | |
9717 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
9718 | with L columns and N rows, in row-major order. Each row in the array is | |
9719 | indexed starting from 1 (row 0 is shared by the two tables). | |
9720 | ||
9721 | --- | |
9722 | ||
9723 | Hash table lookup is handled the same in version 1 and 2: | |
9724 | ||
9725 | We assume that N and M will not exceed 2^32 - 1. | |
9726 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
9727 | ||
d2415c6c DE |
9728 | Given a 64-bit compilation unit signature or a type signature S, an entry |
9729 | in the hash table is located as follows: | |
80626a55 | 9730 | |
d2415c6c DE |
9731 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
9732 | the low-order k bits all set to 1. | |
80626a55 | 9733 | |
d2415c6c | 9734 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 9735 | |
d2415c6c DE |
9736 | 3) If the hash table entry at index H matches the signature, use that |
9737 | entry. If the hash table entry at index H is unused (all zeroes), | |
9738 | terminate the search: the signature is not present in the table. | |
80626a55 | 9739 | |
d2415c6c | 9740 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 9741 | |
d2415c6c | 9742 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 9743 | to stop at an unused slot or find the match. */ |
80626a55 DE |
9744 | |
9745 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
9746 | .debug_{info,types}.dwo in DWP_FILE. | |
9747 | Returns NULL if there isn't one. | |
9748 | Note: This function processes DWP files only, not DWO files. */ | |
9749 | ||
9750 | static struct dwp_hash_table * | |
9751 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
9752 | { | |
9753 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9754 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 9755 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 9756 | struct dwarf2_section_info *index; |
73869dc2 | 9757 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
9758 | struct dwp_hash_table *htab; |
9759 | ||
9760 | if (is_debug_types) | |
9761 | index = &dwp_file->sections.tu_index; | |
9762 | else | |
9763 | index = &dwp_file->sections.cu_index; | |
9764 | ||
9765 | if (dwarf2_section_empty_p (index)) | |
9766 | return NULL; | |
9767 | dwarf2_read_section (objfile, index); | |
9768 | ||
9769 | index_ptr = index->buffer; | |
9770 | index_end = index_ptr + index->size; | |
9771 | ||
9772 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
9773 | index_ptr += 4; |
9774 | if (version == 2) | |
9775 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
9776 | else | |
9777 | nr_columns = 0; | |
9778 | index_ptr += 4; | |
80626a55 DE |
9779 | nr_units = read_4_bytes (dbfd, index_ptr); |
9780 | index_ptr += 4; | |
9781 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
9782 | index_ptr += 4; | |
9783 | ||
73869dc2 | 9784 | if (version != 1 && version != 2) |
80626a55 | 9785 | { |
21aa081e | 9786 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 9787 | " [in module %s]"), |
21aa081e | 9788 | pulongest (version), dwp_file->name); |
80626a55 DE |
9789 | } |
9790 | if (nr_slots != (nr_slots & -nr_slots)) | |
9791 | { | |
21aa081e | 9792 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 9793 | " is not power of 2 [in module %s]"), |
21aa081e | 9794 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
9795 | } |
9796 | ||
9797 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
9798 | htab->version = version; |
9799 | htab->nr_columns = nr_columns; | |
80626a55 DE |
9800 | htab->nr_units = nr_units; |
9801 | htab->nr_slots = nr_slots; | |
9802 | htab->hash_table = index_ptr; | |
9803 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
9804 | |
9805 | /* Exit early if the table is empty. */ | |
9806 | if (nr_slots == 0 || nr_units == 0 | |
9807 | || (version == 2 && nr_columns == 0)) | |
9808 | { | |
9809 | /* All must be zero. */ | |
9810 | if (nr_slots != 0 || nr_units != 0 | |
9811 | || (version == 2 && nr_columns != 0)) | |
9812 | { | |
9813 | complaint (&symfile_complaints, | |
9814 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
9815 | " all zero [in modules %s]"), | |
9816 | dwp_file->name); | |
9817 | } | |
9818 | return htab; | |
9819 | } | |
9820 | ||
9821 | if (version == 1) | |
9822 | { | |
9823 | htab->section_pool.v1.indices = | |
9824 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9825 | /* It's harder to decide whether the section is too small in v1. | |
9826 | V1 is deprecated anyway so we punt. */ | |
9827 | } | |
9828 | else | |
9829 | { | |
9830 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9831 | int *ids = htab->section_pool.v2.section_ids; | |
9832 | /* Reverse map for error checking. */ | |
9833 | int ids_seen[DW_SECT_MAX + 1]; | |
9834 | int i; | |
9835 | ||
9836 | if (nr_columns < 2) | |
9837 | { | |
9838 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
9839 | " in section table [in module %s]"), | |
9840 | dwp_file->name); | |
9841 | } | |
9842 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
9843 | { | |
9844 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
9845 | " in section table [in module %s]"), | |
9846 | dwp_file->name); | |
9847 | } | |
9848 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9849 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9850 | for (i = 0; i < nr_columns; ++i) | |
9851 | { | |
9852 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
9853 | ||
9854 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
9855 | { | |
9856 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
9857 | " in section table [in module %s]"), | |
9858 | id, dwp_file->name); | |
9859 | } | |
9860 | if (ids_seen[id] != -1) | |
9861 | { | |
9862 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
9863 | " id %d in section table [in module %s]"), | |
9864 | id, dwp_file->name); | |
9865 | } | |
9866 | ids_seen[id] = i; | |
9867 | ids[i] = id; | |
9868 | } | |
9869 | /* Must have exactly one info or types section. */ | |
9870 | if (((ids_seen[DW_SECT_INFO] != -1) | |
9871 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
9872 | != 1) | |
9873 | { | |
9874 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
9875 | " DWO info/types section [in module %s]"), | |
9876 | dwp_file->name); | |
9877 | } | |
9878 | /* Must have an abbrev section. */ | |
9879 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
9880 | { | |
9881 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
9882 | " section [in module %s]"), | |
9883 | dwp_file->name); | |
9884 | } | |
9885 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
9886 | htab->section_pool.v2.sizes = | |
9887 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
9888 | * nr_units * nr_columns); | |
9889 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
9890 | * nr_units * nr_columns)) | |
9891 | > index_end) | |
9892 | { | |
9893 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
9894 | " [in module %s]"), | |
9895 | dwp_file->name); | |
9896 | } | |
9897 | } | |
80626a55 DE |
9898 | |
9899 | return htab; | |
9900 | } | |
9901 | ||
9902 | /* Update SECTIONS with the data from SECTP. | |
9903 | ||
9904 | This function is like the other "locate" section routines that are | |
9905 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 9906 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
9907 | |
9908 | The result is non-zero for success, or zero if an error was found. */ | |
9909 | ||
9910 | static int | |
73869dc2 DE |
9911 | locate_v1_virtual_dwo_sections (asection *sectp, |
9912 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
9913 | { |
9914 | const struct dwop_section_names *names = &dwop_section_names; | |
9915 | ||
9916 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
9917 | { | |
9918 | /* There can be only one. */ | |
73869dc2 | 9919 | if (sections->abbrev.s.asection != NULL) |
80626a55 | 9920 | return 0; |
73869dc2 | 9921 | sections->abbrev.s.asection = sectp; |
80626a55 DE |
9922 | sections->abbrev.size = bfd_get_section_size (sectp); |
9923 | } | |
9924 | else if (section_is_p (sectp->name, &names->info_dwo) | |
9925 | || section_is_p (sectp->name, &names->types_dwo)) | |
9926 | { | |
9927 | /* There can be only one. */ | |
73869dc2 | 9928 | if (sections->info_or_types.s.asection != NULL) |
80626a55 | 9929 | return 0; |
73869dc2 | 9930 | sections->info_or_types.s.asection = sectp; |
80626a55 DE |
9931 | sections->info_or_types.size = bfd_get_section_size (sectp); |
9932 | } | |
9933 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
9934 | { | |
9935 | /* There can be only one. */ | |
73869dc2 | 9936 | if (sections->line.s.asection != NULL) |
80626a55 | 9937 | return 0; |
73869dc2 | 9938 | sections->line.s.asection = sectp; |
80626a55 DE |
9939 | sections->line.size = bfd_get_section_size (sectp); |
9940 | } | |
9941 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
9942 | { | |
9943 | /* There can be only one. */ | |
73869dc2 | 9944 | if (sections->loc.s.asection != NULL) |
80626a55 | 9945 | return 0; |
73869dc2 | 9946 | sections->loc.s.asection = sectp; |
80626a55 DE |
9947 | sections->loc.size = bfd_get_section_size (sectp); |
9948 | } | |
9949 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
9950 | { | |
9951 | /* There can be only one. */ | |
73869dc2 | 9952 | if (sections->macinfo.s.asection != NULL) |
80626a55 | 9953 | return 0; |
73869dc2 | 9954 | sections->macinfo.s.asection = sectp; |
80626a55 DE |
9955 | sections->macinfo.size = bfd_get_section_size (sectp); |
9956 | } | |
9957 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
9958 | { | |
9959 | /* There can be only one. */ | |
73869dc2 | 9960 | if (sections->macro.s.asection != NULL) |
80626a55 | 9961 | return 0; |
73869dc2 | 9962 | sections->macro.s.asection = sectp; |
80626a55 DE |
9963 | sections->macro.size = bfd_get_section_size (sectp); |
9964 | } | |
9965 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
9966 | { | |
9967 | /* There can be only one. */ | |
73869dc2 | 9968 | if (sections->str_offsets.s.asection != NULL) |
80626a55 | 9969 | return 0; |
73869dc2 | 9970 | sections->str_offsets.s.asection = sectp; |
80626a55 DE |
9971 | sections->str_offsets.size = bfd_get_section_size (sectp); |
9972 | } | |
9973 | else | |
9974 | { | |
9975 | /* No other kind of section is valid. */ | |
9976 | return 0; | |
9977 | } | |
9978 | ||
9979 | return 1; | |
9980 | } | |
9981 | ||
73869dc2 DE |
9982 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
9983 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9984 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9985 | This is for DWP version 1 files. */ | |
80626a55 DE |
9986 | |
9987 | static struct dwo_unit * | |
73869dc2 DE |
9988 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
9989 | uint32_t unit_index, | |
9990 | const char *comp_dir, | |
9991 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
9992 | { |
9993 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
9994 | const struct dwp_hash_table *dwp_htab = |
9995 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
9996 | bfd *dbfd = dwp_file->dbfd; |
9997 | const char *kind = is_debug_types ? "TU" : "CU"; | |
9998 | struct dwo_file *dwo_file; | |
9999 | struct dwo_unit *dwo_unit; | |
73869dc2 | 10000 | struct virtual_v1_dwo_sections sections; |
80626a55 DE |
10001 | void **dwo_file_slot; |
10002 | char *virtual_dwo_name; | |
10003 | struct dwarf2_section_info *cutu; | |
10004 | struct cleanup *cleanups; | |
10005 | int i; | |
10006 | ||
73869dc2 DE |
10007 | gdb_assert (dwp_file->version == 1); |
10008 | ||
80626a55 DE |
10009 | if (dwarf2_read_debug) |
10010 | { | |
73869dc2 | 10011 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 10012 | kind, |
73869dc2 | 10013 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
10014 | dwp_file->name); |
10015 | } | |
10016 | ||
19ac8c2e | 10017 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
10018 | Put a limit on the number of sections we look for so that bad data |
10019 | doesn't cause us to loop forever. */ | |
10020 | ||
73869dc2 | 10021 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
10022 | (1 /* .debug_info or .debug_types */ \ |
10023 | + 1 /* .debug_abbrev */ \ | |
10024 | + 1 /* .debug_line */ \ | |
10025 | + 1 /* .debug_loc */ \ | |
10026 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 10027 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
10028 | + 1 /* trailing zero */) |
10029 | ||
10030 | memset (§ions, 0, sizeof (sections)); | |
10031 | cleanups = make_cleanup (null_cleanup, 0); | |
10032 | ||
73869dc2 | 10033 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
10034 | { |
10035 | asection *sectp; | |
10036 | uint32_t section_nr = | |
10037 | read_4_bytes (dbfd, | |
73869dc2 DE |
10038 | dwp_htab->section_pool.v1.indices |
10039 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
10040 | |
10041 | if (section_nr == 0) | |
10042 | break; | |
10043 | if (section_nr >= dwp_file->num_sections) | |
10044 | { | |
10045 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
10046 | " [in module %s]"), | |
10047 | dwp_file->name); | |
10048 | } | |
10049 | ||
10050 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 10051 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
10052 | { |
10053 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
10054 | " [in module %s]"), | |
10055 | dwp_file->name); | |
10056 | } | |
10057 | } | |
10058 | ||
10059 | if (i < 2 | |
a32a8923 DE |
10060 | || dwarf2_section_empty_p (§ions.info_or_types) |
10061 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
10062 | { |
10063 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
10064 | " [in module %s]"), | |
10065 | dwp_file->name); | |
10066 | } | |
73869dc2 | 10067 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
10068 | { |
10069 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
10070 | " [in module %s]"), | |
10071 | dwp_file->name); | |
10072 | } | |
10073 | ||
10074 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10075 | have dwo_unit "live" in that. At least for now. | |
10076 | ||
10077 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 10078 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
10079 | file, we can combine them back into a virtual DWO file to save space |
10080 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
10081 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
10082 | ||
2792b94d PM |
10083 | virtual_dwo_name = |
10084 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
a32a8923 DE |
10085 | get_section_id (§ions.abbrev), |
10086 | get_section_id (§ions.line), | |
10087 | get_section_id (§ions.loc), | |
10088 | get_section_id (§ions.str_offsets)); | |
80626a55 DE |
10089 | make_cleanup (xfree, virtual_dwo_name); |
10090 | /* Can we use an existing virtual DWO file? */ | |
0ac5b59e | 10091 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); |
80626a55 DE |
10092 | /* Create one if necessary. */ |
10093 | if (*dwo_file_slot == NULL) | |
10094 | { | |
10095 | if (dwarf2_read_debug) | |
10096 | { | |
10097 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10098 | virtual_dwo_name); | |
10099 | } | |
10100 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10101 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, |
10102 | virtual_dwo_name, | |
10103 | strlen (virtual_dwo_name)); | |
10104 | dwo_file->comp_dir = comp_dir; | |
80626a55 DE |
10105 | dwo_file->sections.abbrev = sections.abbrev; |
10106 | dwo_file->sections.line = sections.line; | |
10107 | dwo_file->sections.loc = sections.loc; | |
10108 | dwo_file->sections.macinfo = sections.macinfo; | |
10109 | dwo_file->sections.macro = sections.macro; | |
10110 | dwo_file->sections.str_offsets = sections.str_offsets; | |
10111 | /* The "str" section is global to the entire DWP file. */ | |
10112 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 10113 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
10114 | there's no need to record it in dwo_file. |
10115 | Also, we can't simply record type sections in dwo_file because | |
10116 | we record a pointer into the vector in dwo_unit. As we collect more | |
10117 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
10118 | for it, invalidating all copies of pointers into the previous |
10119 | contents. */ | |
80626a55 DE |
10120 | *dwo_file_slot = dwo_file; |
10121 | } | |
10122 | else | |
10123 | { | |
10124 | if (dwarf2_read_debug) | |
10125 | { | |
10126 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10127 | virtual_dwo_name); | |
10128 | } | |
10129 | dwo_file = *dwo_file_slot; | |
10130 | } | |
10131 | do_cleanups (cleanups); | |
10132 | ||
10133 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10134 | dwo_unit->dwo_file = dwo_file; | |
10135 | dwo_unit->signature = signature; | |
8a0459fd DE |
10136 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, |
10137 | sizeof (struct dwarf2_section_info)); | |
10138 | *dwo_unit->section = sections.info_or_types; | |
57d63ce2 | 10139 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
10140 | |
10141 | return dwo_unit; | |
10142 | } | |
10143 | ||
73869dc2 DE |
10144 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
10145 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
10146 | piece within that section used by a TU/CU, return a virtual section | |
10147 | of just that piece. */ | |
10148 | ||
10149 | static struct dwarf2_section_info | |
10150 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
10151 | bfd_size_type offset, bfd_size_type size) | |
10152 | { | |
10153 | struct dwarf2_section_info result; | |
10154 | asection *sectp; | |
10155 | ||
10156 | gdb_assert (section != NULL); | |
10157 | gdb_assert (!section->is_virtual); | |
10158 | ||
10159 | memset (&result, 0, sizeof (result)); | |
10160 | result.s.containing_section = section; | |
10161 | result.is_virtual = 1; | |
10162 | ||
10163 | if (size == 0) | |
10164 | return result; | |
10165 | ||
10166 | sectp = get_section_bfd_section (section); | |
10167 | ||
10168 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
10169 | bounds of the real section. This is a pretty-rare event, so just | |
10170 | flag an error (easier) instead of a warning and trying to cope. */ | |
10171 | if (sectp == NULL | |
10172 | || offset + size > bfd_get_section_size (sectp)) | |
10173 | { | |
10174 | bfd *abfd = sectp->owner; | |
10175 | ||
10176 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" | |
10177 | " in section %s [in module %s]"), | |
10178 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
10179 | objfile_name (dwarf2_per_objfile->objfile)); | |
10180 | } | |
10181 | ||
10182 | result.virtual_offset = offset; | |
10183 | result.size = size; | |
10184 | return result; | |
10185 | } | |
10186 | ||
10187 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
10188 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
10189 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
10190 | This is for DWP version 2 files. */ | |
10191 | ||
10192 | static struct dwo_unit * | |
10193 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
10194 | uint32_t unit_index, | |
10195 | const char *comp_dir, | |
10196 | ULONGEST signature, int is_debug_types) | |
10197 | { | |
10198 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10199 | const struct dwp_hash_table *dwp_htab = | |
10200 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10201 | bfd *dbfd = dwp_file->dbfd; | |
10202 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10203 | struct dwo_file *dwo_file; | |
10204 | struct dwo_unit *dwo_unit; | |
10205 | struct virtual_v2_dwo_sections sections; | |
10206 | void **dwo_file_slot; | |
10207 | char *virtual_dwo_name; | |
10208 | struct dwarf2_section_info *cutu; | |
10209 | struct cleanup *cleanups; | |
10210 | int i; | |
10211 | ||
10212 | gdb_assert (dwp_file->version == 2); | |
10213 | ||
10214 | if (dwarf2_read_debug) | |
10215 | { | |
10216 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
10217 | kind, | |
10218 | pulongest (unit_index), hex_string (signature), | |
10219 | dwp_file->name); | |
10220 | } | |
10221 | ||
10222 | /* Fetch the section offsets of this DWO unit. */ | |
10223 | ||
10224 | memset (§ions, 0, sizeof (sections)); | |
10225 | cleanups = make_cleanup (null_cleanup, 0); | |
10226 | ||
10227 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
10228 | { | |
10229 | uint32_t offset = read_4_bytes (dbfd, | |
10230 | dwp_htab->section_pool.v2.offsets | |
10231 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10232 | + i) | |
10233 | * sizeof (uint32_t))); | |
10234 | uint32_t size = read_4_bytes (dbfd, | |
10235 | dwp_htab->section_pool.v2.sizes | |
10236 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10237 | + i) | |
10238 | * sizeof (uint32_t))); | |
10239 | ||
10240 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
10241 | { | |
10242 | case DW_SECT_INFO: | |
10243 | case DW_SECT_TYPES: | |
10244 | sections.info_or_types_offset = offset; | |
10245 | sections.info_or_types_size = size; | |
10246 | break; | |
10247 | case DW_SECT_ABBREV: | |
10248 | sections.abbrev_offset = offset; | |
10249 | sections.abbrev_size = size; | |
10250 | break; | |
10251 | case DW_SECT_LINE: | |
10252 | sections.line_offset = offset; | |
10253 | sections.line_size = size; | |
10254 | break; | |
10255 | case DW_SECT_LOC: | |
10256 | sections.loc_offset = offset; | |
10257 | sections.loc_size = size; | |
10258 | break; | |
10259 | case DW_SECT_STR_OFFSETS: | |
10260 | sections.str_offsets_offset = offset; | |
10261 | sections.str_offsets_size = size; | |
10262 | break; | |
10263 | case DW_SECT_MACINFO: | |
10264 | sections.macinfo_offset = offset; | |
10265 | sections.macinfo_size = size; | |
10266 | break; | |
10267 | case DW_SECT_MACRO: | |
10268 | sections.macro_offset = offset; | |
10269 | sections.macro_size = size; | |
10270 | break; | |
10271 | } | |
10272 | } | |
10273 | ||
10274 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10275 | have dwo_unit "live" in that. At least for now. | |
10276 | ||
10277 | The DWP file can be made up of a random collection of CUs and TUs. | |
10278 | However, for each CU + set of TUs that came from the same original DWO | |
10279 | file, we can combine them back into a virtual DWO file to save space | |
10280 | (fewer struct dwo_file objects to allocate). Remember that for really | |
10281 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
10282 | ||
10283 | virtual_dwo_name = | |
10284 | xstrprintf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
10285 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
10286 | (long) (sections.line_size ? sections.line_offset : 0), | |
10287 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
10288 | (long) (sections.str_offsets_size | |
10289 | ? sections.str_offsets_offset : 0)); | |
10290 | make_cleanup (xfree, virtual_dwo_name); | |
10291 | /* Can we use an existing virtual DWO file? */ | |
10292 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); | |
10293 | /* Create one if necessary. */ | |
10294 | if (*dwo_file_slot == NULL) | |
10295 | { | |
10296 | if (dwarf2_read_debug) | |
10297 | { | |
10298 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10299 | virtual_dwo_name); | |
10300 | } | |
10301 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
10302 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, | |
10303 | virtual_dwo_name, | |
10304 | strlen (virtual_dwo_name)); | |
10305 | dwo_file->comp_dir = comp_dir; | |
10306 | dwo_file->sections.abbrev = | |
10307 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
10308 | sections.abbrev_offset, sections.abbrev_size); | |
10309 | dwo_file->sections.line = | |
10310 | create_dwp_v2_section (&dwp_file->sections.line, | |
10311 | sections.line_offset, sections.line_size); | |
10312 | dwo_file->sections.loc = | |
10313 | create_dwp_v2_section (&dwp_file->sections.loc, | |
10314 | sections.loc_offset, sections.loc_size); | |
10315 | dwo_file->sections.macinfo = | |
10316 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
10317 | sections.macinfo_offset, sections.macinfo_size); | |
10318 | dwo_file->sections.macro = | |
10319 | create_dwp_v2_section (&dwp_file->sections.macro, | |
10320 | sections.macro_offset, sections.macro_size); | |
10321 | dwo_file->sections.str_offsets = | |
10322 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
10323 | sections.str_offsets_offset, | |
10324 | sections.str_offsets_size); | |
10325 | /* The "str" section is global to the entire DWP file. */ | |
10326 | dwo_file->sections.str = dwp_file->sections.str; | |
10327 | /* The info or types section is assigned below to dwo_unit, | |
10328 | there's no need to record it in dwo_file. | |
10329 | Also, we can't simply record type sections in dwo_file because | |
10330 | we record a pointer into the vector in dwo_unit. As we collect more | |
10331 | types we'll grow the vector and eventually have to reallocate space | |
10332 | for it, invalidating all copies of pointers into the previous | |
10333 | contents. */ | |
10334 | *dwo_file_slot = dwo_file; | |
10335 | } | |
10336 | else | |
10337 | { | |
10338 | if (dwarf2_read_debug) | |
10339 | { | |
10340 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10341 | virtual_dwo_name); | |
10342 | } | |
10343 | dwo_file = *dwo_file_slot; | |
10344 | } | |
10345 | do_cleanups (cleanups); | |
10346 | ||
10347 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10348 | dwo_unit->dwo_file = dwo_file; | |
10349 | dwo_unit->signature = signature; | |
10350 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, | |
10351 | sizeof (struct dwarf2_section_info)); | |
10352 | *dwo_unit->section = create_dwp_v2_section (is_debug_types | |
10353 | ? &dwp_file->sections.types | |
10354 | : &dwp_file->sections.info, | |
10355 | sections.info_or_types_offset, | |
10356 | sections.info_or_types_size); | |
10357 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
10358 | ||
10359 | return dwo_unit; | |
10360 | } | |
10361 | ||
57d63ce2 DE |
10362 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
10363 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
10364 | |
10365 | static struct dwo_unit * | |
57d63ce2 DE |
10366 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
10367 | ULONGEST signature, int is_debug_types) | |
80626a55 | 10368 | { |
57d63ce2 DE |
10369 | const struct dwp_hash_table *dwp_htab = |
10370 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 10371 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 10372 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
10373 | uint32_t hash = signature & mask; |
10374 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
10375 | unsigned int i; | |
10376 | void **slot; | |
10377 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
10378 | ||
10379 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
10380 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
10381 | slot = htab_find_slot (is_debug_types |
10382 | ? dwp_file->loaded_tus | |
10383 | : dwp_file->loaded_cus, | |
10384 | &find_dwo_cu, INSERT); | |
80626a55 DE |
10385 | |
10386 | if (*slot != NULL) | |
10387 | return *slot; | |
10388 | ||
10389 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 10390 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
10391 | { |
10392 | ULONGEST signature_in_table; | |
10393 | ||
10394 | signature_in_table = | |
57d63ce2 | 10395 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
10396 | if (signature_in_table == signature) |
10397 | { | |
57d63ce2 DE |
10398 | uint32_t unit_index = |
10399 | read_4_bytes (dbfd, | |
10400 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 10401 | |
73869dc2 DE |
10402 | if (dwp_file->version == 1) |
10403 | { | |
10404 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
10405 | comp_dir, signature, | |
10406 | is_debug_types); | |
10407 | } | |
10408 | else | |
10409 | { | |
10410 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
10411 | comp_dir, signature, | |
10412 | is_debug_types); | |
10413 | } | |
80626a55 DE |
10414 | return *slot; |
10415 | } | |
10416 | if (signature_in_table == 0) | |
10417 | return NULL; | |
10418 | hash = (hash + hash2) & mask; | |
10419 | } | |
10420 | ||
10421 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
10422 | " [in module %s]"), | |
10423 | dwp_file->name); | |
10424 | } | |
10425 | ||
ab5088bf | 10426 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
10427 | Open the file specified by FILE_NAME and hand it off to BFD for |
10428 | preliminary analysis. Return a newly initialized bfd *, which | |
10429 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 10430 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
10431 | SEARCH_CWD is true if the current directory is to be searched. |
10432 | It will be searched before debug-file-directory. | |
13aaf454 DE |
10433 | If successful, the file is added to the bfd include table of the |
10434 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 10435 | If unable to find/open the file, return NULL. |
3019eac3 DE |
10436 | NOTE: This function is derived from symfile_bfd_open. */ |
10437 | ||
10438 | static bfd * | |
6ac97d4c | 10439 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 DE |
10440 | { |
10441 | bfd *sym_bfd; | |
80626a55 | 10442 | int desc, flags; |
3019eac3 | 10443 | char *absolute_name; |
9c02c129 DE |
10444 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
10445 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
10446 | to debug_file_directory. */ | |
10447 | char *search_path; | |
10448 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
10449 | ||
6ac97d4c DE |
10450 | if (search_cwd) |
10451 | { | |
10452 | if (*debug_file_directory != '\0') | |
10453 | search_path = concat (".", dirname_separator_string, | |
10454 | debug_file_directory, NULL); | |
10455 | else | |
10456 | search_path = xstrdup ("."); | |
10457 | } | |
9c02c129 | 10458 | else |
6ac97d4c | 10459 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 10460 | |
492c0ab7 | 10461 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
10462 | if (is_dwp) |
10463 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 10464 | desc = openp (search_path, flags, file_name, |
3019eac3 | 10465 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 10466 | xfree (search_path); |
3019eac3 DE |
10467 | if (desc < 0) |
10468 | return NULL; | |
10469 | ||
bb397797 | 10470 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
a4453b7e | 10471 | xfree (absolute_name); |
9c02c129 DE |
10472 | if (sym_bfd == NULL) |
10473 | return NULL; | |
3019eac3 DE |
10474 | bfd_set_cacheable (sym_bfd, 1); |
10475 | ||
10476 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
10477 | { | |
cbb099e8 | 10478 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
10479 | return NULL; |
10480 | } | |
10481 | ||
13aaf454 DE |
10482 | /* Success. Record the bfd as having been included by the objfile's bfd. |
10483 | This is important because things like demangled_names_hash lives in the | |
10484 | objfile's per_bfd space and may have references to things like symbol | |
10485 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
10486 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd); | |
10487 | ||
3019eac3 DE |
10488 | return sym_bfd; |
10489 | } | |
10490 | ||
ab5088bf | 10491 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
10492 | COMP_DIR is the DW_AT_comp_dir attribute. |
10493 | The result is the bfd handle of the file. | |
10494 | If there is a problem finding or opening the file, return NULL. | |
10495 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10496 | same as symfile_bfd_open. */ | |
10497 | ||
10498 | static bfd * | |
ab5088bf | 10499 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 DE |
10500 | { |
10501 | bfd *abfd; | |
3019eac3 | 10502 | |
80626a55 | 10503 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 10504 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
10505 | |
10506 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
10507 | ||
10508 | if (comp_dir != NULL) | |
10509 | { | |
80626a55 | 10510 | char *path_to_try = concat (comp_dir, SLASH_STRING, file_name, NULL); |
3019eac3 DE |
10511 | |
10512 | /* NOTE: If comp_dir is a relative path, this will also try the | |
10513 | search path, which seems useful. */ | |
6ac97d4c | 10514 | abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10515 | xfree (path_to_try); |
10516 | if (abfd != NULL) | |
10517 | return abfd; | |
10518 | } | |
10519 | ||
10520 | /* That didn't work, try debug-file-directory, which, despite its name, | |
10521 | is a list of paths. */ | |
10522 | ||
10523 | if (*debug_file_directory == '\0') | |
10524 | return NULL; | |
10525 | ||
6ac97d4c | 10526 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10527 | } |
10528 | ||
80626a55 DE |
10529 | /* This function is mapped across the sections and remembers the offset and |
10530 | size of each of the DWO debugging sections we are interested in. */ | |
10531 | ||
10532 | static void | |
10533 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
10534 | { | |
10535 | struct dwo_sections *dwo_sections = dwo_sections_ptr; | |
10536 | const struct dwop_section_names *names = &dwop_section_names; | |
10537 | ||
10538 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10539 | { | |
73869dc2 | 10540 | dwo_sections->abbrev.s.asection = sectp; |
80626a55 DE |
10541 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
10542 | } | |
10543 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10544 | { | |
73869dc2 | 10545 | dwo_sections->info.s.asection = sectp; |
80626a55 DE |
10546 | dwo_sections->info.size = bfd_get_section_size (sectp); |
10547 | } | |
10548 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10549 | { | |
73869dc2 | 10550 | dwo_sections->line.s.asection = sectp; |
80626a55 DE |
10551 | dwo_sections->line.size = bfd_get_section_size (sectp); |
10552 | } | |
10553 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10554 | { | |
73869dc2 | 10555 | dwo_sections->loc.s.asection = sectp; |
80626a55 DE |
10556 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
10557 | } | |
10558 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10559 | { | |
73869dc2 | 10560 | dwo_sections->macinfo.s.asection = sectp; |
80626a55 DE |
10561 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
10562 | } | |
10563 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10564 | { | |
73869dc2 | 10565 | dwo_sections->macro.s.asection = sectp; |
80626a55 DE |
10566 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
10567 | } | |
10568 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
10569 | { | |
73869dc2 | 10570 | dwo_sections->str.s.asection = sectp; |
80626a55 DE |
10571 | dwo_sections->str.size = bfd_get_section_size (sectp); |
10572 | } | |
10573 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10574 | { | |
73869dc2 | 10575 | dwo_sections->str_offsets.s.asection = sectp; |
80626a55 DE |
10576 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
10577 | } | |
10578 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10579 | { | |
10580 | struct dwarf2_section_info type_section; | |
10581 | ||
10582 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 10583 | type_section.s.asection = sectp; |
80626a55 DE |
10584 | type_section.size = bfd_get_section_size (sectp); |
10585 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
10586 | &type_section); | |
10587 | } | |
10588 | } | |
10589 | ||
ab5088bf | 10590 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 10591 | by PER_CU. This is for the non-DWP case. |
80626a55 | 10592 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
10593 | |
10594 | static struct dwo_file * | |
0ac5b59e DE |
10595 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
10596 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
10597 | { |
10598 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10599 | struct dwo_file *dwo_file; |
10600 | bfd *dbfd; | |
3019eac3 DE |
10601 | struct cleanup *cleanups; |
10602 | ||
ab5088bf | 10603 | dbfd = open_dwo_file (dwo_name, comp_dir); |
80626a55 DE |
10604 | if (dbfd == NULL) |
10605 | { | |
10606 | if (dwarf2_read_debug) | |
10607 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); | |
10608 | return NULL; | |
10609 | } | |
10610 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10611 | dwo_file->dwo_name = dwo_name; |
10612 | dwo_file->comp_dir = comp_dir; | |
80626a55 | 10613 | dwo_file->dbfd = dbfd; |
3019eac3 DE |
10614 | |
10615 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
10616 | ||
80626a55 | 10617 | bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections); |
3019eac3 | 10618 | |
19c3d4c9 | 10619 | dwo_file->cu = create_dwo_cu (dwo_file); |
3019eac3 DE |
10620 | |
10621 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
10622 | dwo_file->sections.types); | |
10623 | ||
10624 | discard_cleanups (cleanups); | |
10625 | ||
80626a55 DE |
10626 | if (dwarf2_read_debug) |
10627 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); | |
10628 | ||
3019eac3 DE |
10629 | return dwo_file; |
10630 | } | |
10631 | ||
80626a55 | 10632 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
10633 | size of each of the DWP debugging sections common to version 1 and 2 that |
10634 | we are interested in. */ | |
3019eac3 | 10635 | |
80626a55 | 10636 | static void |
73869dc2 DE |
10637 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
10638 | void *dwp_file_ptr) | |
3019eac3 | 10639 | { |
80626a55 DE |
10640 | struct dwp_file *dwp_file = dwp_file_ptr; |
10641 | const struct dwop_section_names *names = &dwop_section_names; | |
10642 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 10643 | |
80626a55 | 10644 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 10645 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
10646 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
10647 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 10648 | |
80626a55 DE |
10649 | /* Look for specific sections that we need. */ |
10650 | if (section_is_p (sectp->name, &names->str_dwo)) | |
10651 | { | |
73869dc2 | 10652 | dwp_file->sections.str.s.asection = sectp; |
80626a55 DE |
10653 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
10654 | } | |
10655 | else if (section_is_p (sectp->name, &names->cu_index)) | |
10656 | { | |
73869dc2 | 10657 | dwp_file->sections.cu_index.s.asection = sectp; |
80626a55 DE |
10658 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
10659 | } | |
10660 | else if (section_is_p (sectp->name, &names->tu_index)) | |
10661 | { | |
73869dc2 | 10662 | dwp_file->sections.tu_index.s.asection = sectp; |
80626a55 DE |
10663 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
10664 | } | |
10665 | } | |
3019eac3 | 10666 | |
73869dc2 DE |
10667 | /* This function is mapped across the sections and remembers the offset and |
10668 | size of each of the DWP version 2 debugging sections that we are interested | |
10669 | in. This is split into a separate function because we don't know if we | |
10670 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
10671 | ||
10672 | static void | |
10673 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
10674 | { | |
10675 | struct dwp_file *dwp_file = dwp_file_ptr; | |
10676 | const struct dwop_section_names *names = &dwop_section_names; | |
10677 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
10678 | ||
10679 | /* Record the ELF section number for later lookup: this is what the | |
10680 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
10681 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
10682 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
10683 | ||
10684 | /* Look for specific sections that we need. */ | |
10685 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10686 | { | |
10687 | dwp_file->sections.abbrev.s.asection = sectp; | |
10688 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
10689 | } | |
10690 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10691 | { | |
10692 | dwp_file->sections.info.s.asection = sectp; | |
10693 | dwp_file->sections.info.size = bfd_get_section_size (sectp); | |
10694 | } | |
10695 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10696 | { | |
10697 | dwp_file->sections.line.s.asection = sectp; | |
10698 | dwp_file->sections.line.size = bfd_get_section_size (sectp); | |
10699 | } | |
10700 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10701 | { | |
10702 | dwp_file->sections.loc.s.asection = sectp; | |
10703 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); | |
10704 | } | |
10705 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10706 | { | |
10707 | dwp_file->sections.macinfo.s.asection = sectp; | |
10708 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); | |
10709 | } | |
10710 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10711 | { | |
10712 | dwp_file->sections.macro.s.asection = sectp; | |
10713 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); | |
10714 | } | |
10715 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10716 | { | |
10717 | dwp_file->sections.str_offsets.s.asection = sectp; | |
10718 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
10719 | } | |
10720 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10721 | { | |
10722 | dwp_file->sections.types.s.asection = sectp; | |
10723 | dwp_file->sections.types.size = bfd_get_section_size (sectp); | |
10724 | } | |
10725 | } | |
10726 | ||
80626a55 | 10727 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10728 | |
80626a55 DE |
10729 | static hashval_t |
10730 | hash_dwp_loaded_cutus (const void *item) | |
10731 | { | |
10732 | const struct dwo_unit *dwo_unit = item; | |
3019eac3 | 10733 | |
80626a55 DE |
10734 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
10735 | return dwo_unit->signature; | |
3019eac3 DE |
10736 | } |
10737 | ||
80626a55 | 10738 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10739 | |
80626a55 DE |
10740 | static int |
10741 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 10742 | { |
80626a55 DE |
10743 | const struct dwo_unit *dua = a; |
10744 | const struct dwo_unit *dub = b; | |
3019eac3 | 10745 | |
80626a55 DE |
10746 | return dua->signature == dub->signature; |
10747 | } | |
3019eac3 | 10748 | |
80626a55 | 10749 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10750 | |
80626a55 DE |
10751 | static htab_t |
10752 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
10753 | { | |
10754 | return htab_create_alloc_ex (3, | |
10755 | hash_dwp_loaded_cutus, | |
10756 | eq_dwp_loaded_cutus, | |
10757 | NULL, | |
10758 | &objfile->objfile_obstack, | |
10759 | hashtab_obstack_allocate, | |
10760 | dummy_obstack_deallocate); | |
10761 | } | |
3019eac3 | 10762 | |
ab5088bf DE |
10763 | /* Try to open DWP file FILE_NAME. |
10764 | The result is the bfd handle of the file. | |
10765 | If there is a problem finding or opening the file, return NULL. | |
10766 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10767 | same as symfile_bfd_open. */ | |
10768 | ||
10769 | static bfd * | |
10770 | open_dwp_file (const char *file_name) | |
10771 | { | |
6ac97d4c DE |
10772 | bfd *abfd; |
10773 | ||
10774 | abfd = try_open_dwop_file (file_name, 1 /*is_dwp*/, 1 /*search_cwd*/); | |
10775 | if (abfd != NULL) | |
10776 | return abfd; | |
10777 | ||
10778 | /* Work around upstream bug 15652. | |
10779 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
10780 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
10781 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
10782 | of the executable's path may have discarded the needed info. | |
10783 | [IWBN if the dwp file name was recorded in the executable, akin to | |
10784 | .gnu_debuglink, but that doesn't exist yet.] | |
10785 | Strip the directory from FILE_NAME and search again. */ | |
10786 | if (*debug_file_directory != '\0') | |
10787 | { | |
10788 | /* Don't implicitly search the current directory here. | |
10789 | If the user wants to search "." to handle this case, | |
10790 | it must be added to debug-file-directory. */ | |
10791 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
10792 | 0 /*search_cwd*/); | |
10793 | } | |
10794 | ||
10795 | return NULL; | |
ab5088bf DE |
10796 | } |
10797 | ||
80626a55 DE |
10798 | /* Initialize the use of the DWP file for the current objfile. |
10799 | By convention the name of the DWP file is ${objfile}.dwp. | |
10800 | The result is NULL if it can't be found. */ | |
a766d390 | 10801 | |
80626a55 | 10802 | static struct dwp_file * |
ab5088bf | 10803 | open_and_init_dwp_file (void) |
80626a55 DE |
10804 | { |
10805 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10806 | struct dwp_file *dwp_file; | |
10807 | char *dwp_name; | |
10808 | bfd *dbfd; | |
10809 | struct cleanup *cleanups; | |
10810 | ||
82bf32bc JK |
10811 | /* Try to find first .dwp for the binary file before any symbolic links |
10812 | resolving. */ | |
10813 | dwp_name = xstrprintf ("%s.dwp", objfile->original_name); | |
80626a55 DE |
10814 | cleanups = make_cleanup (xfree, dwp_name); |
10815 | ||
ab5088bf | 10816 | dbfd = open_dwp_file (dwp_name); |
82bf32bc JK |
10817 | if (dbfd == NULL |
10818 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
10819 | { | |
10820 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
10821 | dwp_name = xstrprintf ("%s.dwp", objfile_name (objfile)); | |
10822 | make_cleanup (xfree, dwp_name); | |
10823 | dbfd = open_dwp_file (dwp_name); | |
10824 | } | |
10825 | ||
80626a55 DE |
10826 | if (dbfd == NULL) |
10827 | { | |
10828 | if (dwarf2_read_debug) | |
10829 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); | |
10830 | do_cleanups (cleanups); | |
10831 | return NULL; | |
3019eac3 | 10832 | } |
80626a55 | 10833 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
93417882 | 10834 | dwp_file->name = bfd_get_filename (dbfd); |
80626a55 DE |
10835 | dwp_file->dbfd = dbfd; |
10836 | do_cleanups (cleanups); | |
c906108c | 10837 | |
80626a55 DE |
10838 | /* +1: section 0 is unused */ |
10839 | dwp_file->num_sections = bfd_count_sections (dbfd) + 1; | |
10840 | dwp_file->elf_sections = | |
10841 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
10842 | dwp_file->num_sections, asection *); | |
10843 | ||
73869dc2 | 10844 | bfd_map_over_sections (dbfd, dwarf2_locate_common_dwp_sections, dwp_file); |
80626a55 DE |
10845 | |
10846 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
10847 | ||
10848 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
10849 | ||
73869dc2 DE |
10850 | /* The DWP file version is stored in the hash table. Oh well. */ |
10851 | if (dwp_file->cus->version != dwp_file->tus->version) | |
10852 | { | |
10853 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 10854 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 10855 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
10856 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
10857 | " TU version %s [in DWP file %s]"), | |
10858 | pulongest (dwp_file->cus->version), | |
10859 | pulongest (dwp_file->tus->version), dwp_name); | |
73869dc2 DE |
10860 | } |
10861 | dwp_file->version = dwp_file->cus->version; | |
10862 | ||
10863 | if (dwp_file->version == 2) | |
10864 | bfd_map_over_sections (dbfd, dwarf2_locate_v2_dwp_sections, dwp_file); | |
10865 | ||
19ac8c2e DE |
10866 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
10867 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 10868 | |
80626a55 DE |
10869 | if (dwarf2_read_debug) |
10870 | { | |
10871 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
10872 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
10873 | " %s CUs, %s TUs\n", |
10874 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
10875 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
10876 | } |
10877 | ||
10878 | return dwp_file; | |
3019eac3 | 10879 | } |
c906108c | 10880 | |
ab5088bf DE |
10881 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
10882 | ||
10883 | static struct dwp_file * | |
10884 | get_dwp_file (void) | |
10885 | { | |
10886 | if (! dwarf2_per_objfile->dwp_checked) | |
10887 | { | |
10888 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
10889 | dwarf2_per_objfile->dwp_checked = 1; | |
10890 | } | |
10891 | return dwarf2_per_objfile->dwp_file; | |
10892 | } | |
10893 | ||
80626a55 DE |
10894 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
10895 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
10896 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 10897 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
10898 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
10899 | ||
10900 | This is called, for example, when wanting to read a variable with a | |
10901 | complex location. Therefore we don't want to do file i/o for every call. | |
10902 | Therefore we don't want to look for a DWO file on every call. | |
10903 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
10904 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
10905 | for a DWO file. | |
10906 | ||
1c658ad5 | 10907 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 10908 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 10909 | |
3019eac3 | 10910 | static struct dwo_unit * |
80626a55 DE |
10911 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
10912 | const char *dwo_name, const char *comp_dir, | |
10913 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
10914 | { |
10915 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10916 | const char *kind = is_debug_types ? "TU" : "CU"; |
10917 | void **dwo_file_slot; | |
3019eac3 | 10918 | struct dwo_file *dwo_file; |
80626a55 | 10919 | struct dwp_file *dwp_file; |
cb1df416 | 10920 | |
6a506a2d DE |
10921 | /* First see if there's a DWP file. |
10922 | If we have a DWP file but didn't find the DWO inside it, don't | |
10923 | look for the original DWO file. It makes gdb behave differently | |
10924 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 10925 | |
ab5088bf | 10926 | dwp_file = get_dwp_file (); |
80626a55 | 10927 | if (dwp_file != NULL) |
cf2c3c16 | 10928 | { |
80626a55 DE |
10929 | const struct dwp_hash_table *dwp_htab = |
10930 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10931 | ||
10932 | if (dwp_htab != NULL) | |
10933 | { | |
10934 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
10935 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
10936 | signature, is_debug_types); | |
80626a55 DE |
10937 | |
10938 | if (dwo_cutu != NULL) | |
10939 | { | |
10940 | if (dwarf2_read_debug) | |
10941 | { | |
10942 | fprintf_unfiltered (gdb_stdlog, | |
10943 | "Virtual DWO %s %s found: @%s\n", | |
10944 | kind, hex_string (signature), | |
10945 | host_address_to_string (dwo_cutu)); | |
10946 | } | |
10947 | return dwo_cutu; | |
10948 | } | |
10949 | } | |
10950 | } | |
6a506a2d | 10951 | else |
80626a55 | 10952 | { |
6a506a2d | 10953 | /* No DWP file, look for the DWO file. */ |
80626a55 | 10954 | |
6a506a2d DE |
10955 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
10956 | if (*dwo_file_slot == NULL) | |
80626a55 | 10957 | { |
6a506a2d DE |
10958 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
10959 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 10960 | } |
6a506a2d DE |
10961 | /* NOTE: This will be NULL if unable to open the file. */ |
10962 | dwo_file = *dwo_file_slot; | |
3019eac3 | 10963 | |
6a506a2d | 10964 | if (dwo_file != NULL) |
19c3d4c9 | 10965 | { |
6a506a2d DE |
10966 | struct dwo_unit *dwo_cutu = NULL; |
10967 | ||
10968 | if (is_debug_types && dwo_file->tus) | |
10969 | { | |
10970 | struct dwo_unit find_dwo_cutu; | |
10971 | ||
10972 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
10973 | find_dwo_cutu.signature = signature; | |
10974 | dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu); | |
10975 | } | |
10976 | else if (!is_debug_types && dwo_file->cu) | |
80626a55 | 10977 | { |
6a506a2d DE |
10978 | if (signature == dwo_file->cu->signature) |
10979 | dwo_cutu = dwo_file->cu; | |
10980 | } | |
10981 | ||
10982 | if (dwo_cutu != NULL) | |
10983 | { | |
10984 | if (dwarf2_read_debug) | |
10985 | { | |
10986 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
10987 | kind, dwo_name, hex_string (signature), | |
10988 | host_address_to_string (dwo_cutu)); | |
10989 | } | |
10990 | return dwo_cutu; | |
80626a55 DE |
10991 | } |
10992 | } | |
2e276125 | 10993 | } |
9cdd5dbd | 10994 | |
80626a55 DE |
10995 | /* We didn't find it. This could mean a dwo_id mismatch, or |
10996 | someone deleted the DWO/DWP file, or the search path isn't set up | |
10997 | correctly to find the file. */ | |
10998 | ||
10999 | if (dwarf2_read_debug) | |
11000 | { | |
11001 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
11002 | kind, dwo_name, hex_string (signature)); | |
11003 | } | |
3019eac3 | 11004 | |
6656a72d DE |
11005 | /* This is a warning and not a complaint because it can be caused by |
11006 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
11007 | { |
11008 | /* Print the name of the DWP file if we looked there, helps the user | |
11009 | better diagnose the problem. */ | |
11010 | char *dwp_text = NULL; | |
11011 | struct cleanup *cleanups; | |
11012 | ||
11013 | if (dwp_file != NULL) | |
11014 | dwp_text = xstrprintf (" [in DWP file %s]", lbasename (dwp_file->name)); | |
11015 | cleanups = make_cleanup (xfree, dwp_text); | |
11016 | ||
11017 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset 0x%x" | |
11018 | " [in module %s]"), | |
11019 | kind, dwo_name, hex_string (signature), | |
11020 | dwp_text != NULL ? dwp_text : "", | |
11021 | this_unit->is_debug_types ? "TU" : "CU", | |
11022 | this_unit->offset.sect_off, objfile_name (objfile)); | |
11023 | ||
11024 | do_cleanups (cleanups); | |
11025 | } | |
3019eac3 | 11026 | return NULL; |
5fb290d7 DJ |
11027 | } |
11028 | ||
80626a55 DE |
11029 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
11030 | See lookup_dwo_cutu_unit for details. */ | |
11031 | ||
11032 | static struct dwo_unit * | |
11033 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
11034 | const char *dwo_name, const char *comp_dir, | |
11035 | ULONGEST signature) | |
11036 | { | |
11037 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
11038 | } | |
11039 | ||
11040 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
11041 | See lookup_dwo_cutu_unit for details. */ | |
11042 | ||
11043 | static struct dwo_unit * | |
11044 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
11045 | const char *dwo_name, const char *comp_dir) | |
11046 | { | |
11047 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
11048 | } | |
11049 | ||
89e63ee4 DE |
11050 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
11051 | ||
11052 | static int | |
11053 | queue_and_load_dwo_tu (void **slot, void *info) | |
11054 | { | |
11055 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
11056 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
11057 | ULONGEST signature = dwo_unit->signature; | |
11058 | struct signatured_type *sig_type = | |
11059 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
11060 | ||
11061 | if (sig_type != NULL) | |
11062 | { | |
11063 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
11064 | ||
11065 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
11066 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
11067 | while processing PER_CU. */ | |
11068 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
11069 | load_full_type_unit (sig_cu); | |
11070 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
11071 | } | |
11072 | ||
11073 | return 1; | |
11074 | } | |
11075 | ||
11076 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
11077 | The DWO may have the only definition of the type, though it may not be | |
11078 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
11079 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
11080 | ||
11081 | static void | |
11082 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
11083 | { | |
11084 | struct dwo_unit *dwo_unit; | |
11085 | struct dwo_file *dwo_file; | |
11086 | ||
11087 | gdb_assert (!per_cu->is_debug_types); | |
11088 | gdb_assert (get_dwp_file () == NULL); | |
11089 | gdb_assert (per_cu->cu != NULL); | |
11090 | ||
11091 | dwo_unit = per_cu->cu->dwo_unit; | |
11092 | gdb_assert (dwo_unit != NULL); | |
11093 | ||
11094 | dwo_file = dwo_unit->dwo_file; | |
11095 | if (dwo_file->tus != NULL) | |
11096 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
11097 | } | |
11098 | ||
3019eac3 DE |
11099 | /* Free all resources associated with DWO_FILE. |
11100 | Close the DWO file and munmap the sections. | |
11101 | All memory should be on the objfile obstack. */ | |
348e048f DE |
11102 | |
11103 | static void | |
3019eac3 | 11104 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 11105 | { |
3019eac3 DE |
11106 | int ix; |
11107 | struct dwarf2_section_info *section; | |
348e048f | 11108 | |
5c6fa7ab | 11109 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 11110 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 11111 | |
3019eac3 DE |
11112 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
11113 | } | |
348e048f | 11114 | |
3019eac3 | 11115 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 11116 | |
3019eac3 DE |
11117 | static void |
11118 | free_dwo_file_cleanup (void *arg) | |
11119 | { | |
11120 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
11121 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 11122 | |
3019eac3 DE |
11123 | free_dwo_file (dwo_file, objfile); |
11124 | } | |
348e048f | 11125 | |
3019eac3 | 11126 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 11127 | |
3019eac3 DE |
11128 | static int |
11129 | free_dwo_file_from_slot (void **slot, void *info) | |
11130 | { | |
11131 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
11132 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 11133 | |
3019eac3 | 11134 | free_dwo_file (dwo_file, objfile); |
348e048f | 11135 | |
3019eac3 DE |
11136 | return 1; |
11137 | } | |
348e048f | 11138 | |
3019eac3 | 11139 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 11140 | |
3019eac3 DE |
11141 | static void |
11142 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
11143 | { | |
11144 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 11145 | } |
3019eac3 DE |
11146 | \f |
11147 | /* Read in various DIEs. */ | |
348e048f | 11148 | |
d389af10 JK |
11149 | /* qsort helper for inherit_abstract_dies. */ |
11150 | ||
11151 | static int | |
11152 | unsigned_int_compar (const void *ap, const void *bp) | |
11153 | { | |
11154 | unsigned int a = *(unsigned int *) ap; | |
11155 | unsigned int b = *(unsigned int *) bp; | |
11156 | ||
11157 | return (a > b) - (b > a); | |
11158 | } | |
11159 | ||
11160 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
11161 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
11162 | already referenced by DW_AT_abstract_origin from the children of the | |
11163 | current DIE. */ | |
d389af10 JK |
11164 | |
11165 | static void | |
11166 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
11167 | { | |
11168 | struct die_info *child_die; | |
11169 | unsigned die_children_count; | |
11170 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
11171 | sect_offset *offsets; |
11172 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
11173 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
11174 | struct die_info *origin_die; | |
11175 | /* Iterator of the ORIGIN_DIE children. */ | |
11176 | struct die_info *origin_child_die; | |
11177 | struct cleanup *cleanups; | |
11178 | struct attribute *attr; | |
cd02d79d PA |
11179 | struct dwarf2_cu *origin_cu; |
11180 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
11181 | |
11182 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11183 | if (!attr) | |
11184 | return; | |
11185 | ||
cd02d79d PA |
11186 | /* Note that following die references may follow to a die in a |
11187 | different cu. */ | |
11188 | ||
11189 | origin_cu = cu; | |
11190 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
11191 | ||
11192 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
11193 | symbols in. */ | |
11194 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
11195 | origin_cu->list_in_scope = cu->list_in_scope; | |
11196 | ||
edb3359d DJ |
11197 | if (die->tag != origin_die->tag |
11198 | && !(die->tag == DW_TAG_inlined_subroutine | |
11199 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11200 | complaint (&symfile_complaints, |
11201 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 11202 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
11203 | |
11204 | child_die = die->child; | |
11205 | die_children_count = 0; | |
11206 | while (child_die && child_die->tag) | |
11207 | { | |
11208 | child_die = sibling_die (child_die); | |
11209 | die_children_count++; | |
11210 | } | |
11211 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
11212 | cleanups = make_cleanup (xfree, offsets); | |
11213 | ||
11214 | offsets_end = offsets; | |
11215 | child_die = die->child; | |
11216 | while (child_die && child_die->tag) | |
11217 | { | |
c38f313d DJ |
11218 | /* For each CHILD_DIE, find the corresponding child of |
11219 | ORIGIN_DIE. If there is more than one layer of | |
11220 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
11221 | but GCC versions at least through 4.4 generate this (GCC PR | |
11222 | 40573). */ | |
11223 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 11224 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 11225 | |
c38f313d DJ |
11226 | while (1) |
11227 | { | |
cd02d79d PA |
11228 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
11229 | child_origin_cu); | |
c38f313d DJ |
11230 | if (attr == NULL) |
11231 | break; | |
cd02d79d PA |
11232 | child_origin_die = follow_die_ref (child_origin_die, attr, |
11233 | &child_origin_cu); | |
c38f313d DJ |
11234 | } |
11235 | ||
d389af10 JK |
11236 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
11237 | counterpart may exist. */ | |
c38f313d | 11238 | if (child_origin_die != child_die) |
d389af10 | 11239 | { |
edb3359d DJ |
11240 | if (child_die->tag != child_origin_die->tag |
11241 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
11242 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11243 | complaint (&symfile_complaints, |
11244 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11245 | "different tags"), child_die->offset.sect_off, |
11246 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11247 | if (child_origin_die->parent != origin_die) |
11248 | complaint (&symfile_complaints, | |
11249 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11250 | "different parents"), child_die->offset.sect_off, |
11251 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11252 | else |
11253 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
11254 | } |
11255 | child_die = sibling_die (child_die); | |
11256 | } | |
11257 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
11258 | unsigned_int_compar); | |
11259 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 11260 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
11261 | complaint (&symfile_complaints, |
11262 | _("Multiple children of DIE 0x%x refer " | |
11263 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 11264 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
11265 | |
11266 | offsetp = offsets; | |
11267 | origin_child_die = origin_die->child; | |
11268 | while (origin_child_die && origin_child_die->tag) | |
11269 | { | |
11270 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
11271 | while (offsetp < offsets_end |
11272 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 11273 | offsetp++; |
b64f50a1 JK |
11274 | if (offsetp >= offsets_end |
11275 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 | 11276 | { |
adde2bff DE |
11277 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
11278 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
11279 | This can happen with mutually referenced abstract_origins. | |
11280 | PR 16581. */ | |
11281 | if (!origin_child_die->in_process) | |
11282 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
11283 | } |
11284 | origin_child_die = sibling_die (origin_child_die); | |
11285 | } | |
cd02d79d | 11286 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
11287 | |
11288 | do_cleanups (cleanups); | |
11289 | } | |
11290 | ||
c906108c | 11291 | static void |
e7c27a73 | 11292 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11293 | { |
e7c27a73 | 11294 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11295 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11296 | struct context_stack *newobj; |
c906108c SS |
11297 | CORE_ADDR lowpc; |
11298 | CORE_ADDR highpc; | |
11299 | struct die_info *child_die; | |
edb3359d | 11300 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 11301 | const char *name; |
e142c38c | 11302 | CORE_ADDR baseaddr; |
801e3a5b | 11303 | struct block *block; |
edb3359d | 11304 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
11305 | VEC (symbolp) *template_args = NULL; |
11306 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
11307 | |
11308 | if (inlined_func) | |
11309 | { | |
11310 | /* If we do not have call site information, we can't show the | |
11311 | caller of this inlined function. That's too confusing, so | |
11312 | only use the scope for local variables. */ | |
11313 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
11314 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
11315 | if (call_line == NULL || call_file == NULL) | |
11316 | { | |
11317 | read_lexical_block_scope (die, cu); | |
11318 | return; | |
11319 | } | |
11320 | } | |
c906108c | 11321 | |
e142c38c DJ |
11322 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
11323 | ||
94af9270 | 11324 | name = dwarf2_name (die, cu); |
c906108c | 11325 | |
e8d05480 JB |
11326 | /* Ignore functions with missing or empty names. These are actually |
11327 | illegal according to the DWARF standard. */ | |
11328 | if (name == NULL) | |
11329 | { | |
11330 | complaint (&symfile_complaints, | |
b64f50a1 JK |
11331 | _("missing name for subprogram DIE at %d"), |
11332 | die->offset.sect_off); | |
e8d05480 JB |
11333 | return; |
11334 | } | |
11335 | ||
11336 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
11337 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
11338 | { | |
ae4d0c03 PM |
11339 | attr = dwarf2_attr (die, DW_AT_external, cu); |
11340 | if (!attr || !DW_UNSND (attr)) | |
11341 | complaint (&symfile_complaints, | |
3e43a32a MS |
11342 | _("cannot get low and high bounds " |
11343 | "for subprogram DIE at %d"), | |
b64f50a1 | 11344 | die->offset.sect_off); |
e8d05480 JB |
11345 | return; |
11346 | } | |
c906108c | 11347 | |
3e29f34a MR |
11348 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11349 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 11350 | |
34eaf542 TT |
11351 | /* If we have any template arguments, then we must allocate a |
11352 | different sort of symbol. */ | |
11353 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
11354 | { | |
11355 | if (child_die->tag == DW_TAG_template_type_param | |
11356 | || child_die->tag == DW_TAG_template_value_param) | |
11357 | { | |
e623cf5d | 11358 | templ_func = allocate_template_symbol (objfile); |
34eaf542 TT |
11359 | templ_func->base.is_cplus_template_function = 1; |
11360 | break; | |
11361 | } | |
11362 | } | |
11363 | ||
fe978cb0 PA |
11364 | newobj = push_context (0, lowpc); |
11365 | newobj->name = new_symbol_full (die, read_type_die (die, cu), cu, | |
34eaf542 | 11366 | (struct symbol *) templ_func); |
4c2df51b | 11367 | |
4cecd739 DJ |
11368 | /* If there is a location expression for DW_AT_frame_base, record |
11369 | it. */ | |
e142c38c | 11370 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 11371 | if (attr) |
fe978cb0 | 11372 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 11373 | |
e142c38c | 11374 | cu->list_in_scope = &local_symbols; |
c906108c | 11375 | |
639d11d3 | 11376 | if (die->child != NULL) |
c906108c | 11377 | { |
639d11d3 | 11378 | child_die = die->child; |
c906108c SS |
11379 | while (child_die && child_die->tag) |
11380 | { | |
34eaf542 TT |
11381 | if (child_die->tag == DW_TAG_template_type_param |
11382 | || child_die->tag == DW_TAG_template_value_param) | |
11383 | { | |
11384 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
11385 | ||
f1078f66 DJ |
11386 | if (arg != NULL) |
11387 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
11388 | } |
11389 | else | |
11390 | process_die (child_die, cu); | |
c906108c SS |
11391 | child_die = sibling_die (child_die); |
11392 | } | |
11393 | } | |
11394 | ||
d389af10 JK |
11395 | inherit_abstract_dies (die, cu); |
11396 | ||
4a811a97 UW |
11397 | /* If we have a DW_AT_specification, we might need to import using |
11398 | directives from the context of the specification DIE. See the | |
11399 | comment in determine_prefix. */ | |
11400 | if (cu->language == language_cplus | |
11401 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
11402 | { | |
11403 | struct dwarf2_cu *spec_cu = cu; | |
11404 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
11405 | ||
11406 | while (spec_die) | |
11407 | { | |
11408 | child_die = spec_die->child; | |
11409 | while (child_die && child_die->tag) | |
11410 | { | |
11411 | if (child_die->tag == DW_TAG_imported_module) | |
11412 | process_die (child_die, spec_cu); | |
11413 | child_die = sibling_die (child_die); | |
11414 | } | |
11415 | ||
11416 | /* In some cases, GCC generates specification DIEs that | |
11417 | themselves contain DW_AT_specification attributes. */ | |
11418 | spec_die = die_specification (spec_die, &spec_cu); | |
11419 | } | |
11420 | } | |
11421 | ||
fe978cb0 | 11422 | newobj = pop_context (); |
c906108c | 11423 | /* Make a block for the local symbols within. */ |
fe978cb0 | 11424 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
4d663531 | 11425 | lowpc, highpc); |
801e3a5b | 11426 | |
df8a16a1 | 11427 | /* For C++, set the block's scope. */ |
195a3f6c | 11428 | if ((cu->language == language_cplus || cu->language == language_fortran) |
4d4ec4e5 | 11429 | && cu->processing_has_namespace_info) |
195a3f6c TT |
11430 | block_set_scope (block, determine_prefix (die, cu), |
11431 | &objfile->objfile_obstack); | |
df8a16a1 | 11432 | |
801e3a5b JB |
11433 | /* If we have address ranges, record them. */ |
11434 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 11435 | |
fe978cb0 | 11436 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 11437 | |
34eaf542 TT |
11438 | /* Attach template arguments to function. */ |
11439 | if (! VEC_empty (symbolp, template_args)) | |
11440 | { | |
11441 | gdb_assert (templ_func != NULL); | |
11442 | ||
11443 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
11444 | templ_func->template_arguments | |
11445 | = obstack_alloc (&objfile->objfile_obstack, | |
11446 | (templ_func->n_template_arguments | |
11447 | * sizeof (struct symbol *))); | |
11448 | memcpy (templ_func->template_arguments, | |
11449 | VEC_address (symbolp, template_args), | |
11450 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
11451 | VEC_free (symbolp, template_args); | |
11452 | } | |
11453 | ||
208d8187 JB |
11454 | /* In C++, we can have functions nested inside functions (e.g., when |
11455 | a function declares a class that has methods). This means that | |
11456 | when we finish processing a function scope, we may need to go | |
11457 | back to building a containing block's symbol lists. */ | |
fe978cb0 PA |
11458 | local_symbols = newobj->locals; |
11459 | using_directives = newobj->using_directives; | |
208d8187 | 11460 | |
921e78cf JB |
11461 | /* If we've finished processing a top-level function, subsequent |
11462 | symbols go in the file symbol list. */ | |
11463 | if (outermost_context_p ()) | |
e142c38c | 11464 | cu->list_in_scope = &file_symbols; |
c906108c SS |
11465 | } |
11466 | ||
11467 | /* Process all the DIES contained within a lexical block scope. Start | |
11468 | a new scope, process the dies, and then close the scope. */ | |
11469 | ||
11470 | static void | |
e7c27a73 | 11471 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11472 | { |
e7c27a73 | 11473 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11474 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11475 | struct context_stack *newobj; |
c906108c SS |
11476 | CORE_ADDR lowpc, highpc; |
11477 | struct die_info *child_die; | |
e142c38c DJ |
11478 | CORE_ADDR baseaddr; |
11479 | ||
11480 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
11481 | |
11482 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
11483 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
11484 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 11485 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 11486 | describe ranges. */ |
d85a05f0 | 11487 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c | 11488 | return; |
3e29f34a MR |
11489 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11490 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
11491 | |
11492 | push_context (0, lowpc); | |
639d11d3 | 11493 | if (die->child != NULL) |
c906108c | 11494 | { |
639d11d3 | 11495 | child_die = die->child; |
c906108c SS |
11496 | while (child_die && child_die->tag) |
11497 | { | |
e7c27a73 | 11498 | process_die (child_die, cu); |
c906108c SS |
11499 | child_die = sibling_die (child_die); |
11500 | } | |
11501 | } | |
fe978cb0 | 11502 | newobj = pop_context (); |
c906108c | 11503 | |
8540c487 | 11504 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 11505 | { |
801e3a5b | 11506 | struct block *block |
fe978cb0 PA |
11507 | = finish_block (0, &local_symbols, newobj->old_blocks, |
11508 | newobj->start_addr, highpc); | |
801e3a5b JB |
11509 | |
11510 | /* Note that recording ranges after traversing children, as we | |
11511 | do here, means that recording a parent's ranges entails | |
11512 | walking across all its children's ranges as they appear in | |
11513 | the address map, which is quadratic behavior. | |
11514 | ||
11515 | It would be nicer to record the parent's ranges before | |
11516 | traversing its children, simply overriding whatever you find | |
11517 | there. But since we don't even decide whether to create a | |
11518 | block until after we've traversed its children, that's hard | |
11519 | to do. */ | |
11520 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 11521 | } |
fe978cb0 PA |
11522 | local_symbols = newobj->locals; |
11523 | using_directives = newobj->using_directives; | |
c906108c SS |
11524 | } |
11525 | ||
96408a79 SA |
11526 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
11527 | ||
11528 | static void | |
11529 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11530 | { | |
11531 | struct objfile *objfile = cu->objfile; | |
11532 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11533 | CORE_ADDR pc, baseaddr; | |
11534 | struct attribute *attr; | |
11535 | struct call_site *call_site, call_site_local; | |
11536 | void **slot; | |
11537 | int nparams; | |
11538 | struct die_info *child_die; | |
11539 | ||
11540 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
11541 | ||
11542 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
11543 | if (!attr) | |
11544 | { | |
11545 | complaint (&symfile_complaints, | |
11546 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
11547 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11548 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11549 | return; |
11550 | } | |
31aa7e4e | 11551 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 11552 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
11553 | |
11554 | if (cu->call_site_htab == NULL) | |
11555 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
11556 | NULL, &objfile->objfile_obstack, | |
11557 | hashtab_obstack_allocate, NULL); | |
11558 | call_site_local.pc = pc; | |
11559 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
11560 | if (*slot != NULL) | |
11561 | { | |
11562 | complaint (&symfile_complaints, | |
11563 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
11564 | "DIE 0x%x [in module %s]"), | |
4262abfb JK |
11565 | paddress (gdbarch, pc), die->offset.sect_off, |
11566 | objfile_name (objfile)); | |
96408a79 SA |
11567 | return; |
11568 | } | |
11569 | ||
11570 | /* Count parameters at the caller. */ | |
11571 | ||
11572 | nparams = 0; | |
11573 | for (child_die = die->child; child_die && child_die->tag; | |
11574 | child_die = sibling_die (child_die)) | |
11575 | { | |
11576 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11577 | { | |
11578 | complaint (&symfile_complaints, | |
11579 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
11580 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb JK |
11581 | child_die->tag, child_die->offset.sect_off, |
11582 | objfile_name (objfile)); | |
96408a79 SA |
11583 | continue; |
11584 | } | |
11585 | ||
11586 | nparams++; | |
11587 | } | |
11588 | ||
11589 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
11590 | (sizeof (*call_site) | |
11591 | + (sizeof (*call_site->parameter) | |
11592 | * (nparams - 1)))); | |
11593 | *slot = call_site; | |
11594 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
11595 | call_site->pc = pc; | |
11596 | ||
11597 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
11598 | { | |
11599 | struct die_info *func_die; | |
11600 | ||
11601 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
11602 | for (func_die = die->parent; | |
11603 | func_die && func_die->tag != DW_TAG_subprogram | |
11604 | && func_die->tag != DW_TAG_subroutine_type; | |
11605 | func_die = func_die->parent); | |
11606 | ||
11607 | /* DW_AT_GNU_all_call_sites is a superset | |
11608 | of DW_AT_GNU_all_tail_call_sites. */ | |
11609 | if (func_die | |
11610 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
11611 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
11612 | { | |
11613 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
11614 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
11615 | both the initial caller containing the real return address PC and | |
11616 | the final callee containing the current PC of a chain of tail | |
11617 | calls do not need to have the tail call list complete. But any | |
11618 | function candidate for a virtual tail call frame searched via | |
11619 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
11620 | determined unambiguously. */ | |
11621 | } | |
11622 | else | |
11623 | { | |
11624 | struct type *func_type = NULL; | |
11625 | ||
11626 | if (func_die) | |
11627 | func_type = get_die_type (func_die, cu); | |
11628 | if (func_type != NULL) | |
11629 | { | |
11630 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
11631 | ||
11632 | /* Enlist this call site to the function. */ | |
11633 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
11634 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
11635 | } | |
11636 | else | |
11637 | complaint (&symfile_complaints, | |
11638 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
11639 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11640 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11641 | } |
11642 | } | |
11643 | ||
11644 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
11645 | if (attr == NULL) | |
11646 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11647 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
11648 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
11649 | /* Keep NULL DWARF_BLOCK. */; | |
11650 | else if (attr_form_is_block (attr)) | |
11651 | { | |
11652 | struct dwarf2_locexpr_baton *dlbaton; | |
11653 | ||
11654 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
11655 | dlbaton->data = DW_BLOCK (attr)->data; | |
11656 | dlbaton->size = DW_BLOCK (attr)->size; | |
11657 | dlbaton->per_cu = cu->per_cu; | |
11658 | ||
11659 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
11660 | } | |
7771576e | 11661 | else if (attr_form_is_ref (attr)) |
96408a79 | 11662 | { |
96408a79 SA |
11663 | struct dwarf2_cu *target_cu = cu; |
11664 | struct die_info *target_die; | |
11665 | ||
ac9ec31b | 11666 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
11667 | gdb_assert (target_cu->objfile == objfile); |
11668 | if (die_is_declaration (target_die, target_cu)) | |
11669 | { | |
9112db09 JK |
11670 | const char *target_physname = NULL; |
11671 | struct attribute *target_attr; | |
11672 | ||
11673 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
11674 | target_attr = dwarf2_attr (target_die, DW_AT_linkage_name, target_cu); | |
11675 | if (target_attr == NULL) | |
11676 | target_attr = dwarf2_attr (target_die, DW_AT_MIPS_linkage_name, | |
11677 | target_cu); | |
11678 | if (target_attr != NULL && DW_STRING (target_attr) != NULL) | |
11679 | target_physname = DW_STRING (target_attr); | |
11680 | else | |
11681 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
96408a79 SA |
11682 | if (target_physname == NULL) |
11683 | complaint (&symfile_complaints, | |
11684 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11685 | "physname, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11686 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11687 | else |
7d455152 | 11688 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
11689 | } |
11690 | else | |
11691 | { | |
11692 | CORE_ADDR lowpc; | |
11693 | ||
11694 | /* DW_AT_entry_pc should be preferred. */ | |
11695 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
11696 | complaint (&symfile_complaints, | |
11697 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11698 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11699 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11700 | else |
3e29f34a MR |
11701 | { |
11702 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
11703 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
11704 | } | |
96408a79 SA |
11705 | } |
11706 | } | |
11707 | else | |
11708 | complaint (&symfile_complaints, | |
11709 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
11710 | "block nor reference, for DIE 0x%x [in module %s]"), | |
4262abfb | 11711 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11712 | |
11713 | call_site->per_cu = cu->per_cu; | |
11714 | ||
11715 | for (child_die = die->child; | |
11716 | child_die && child_die->tag; | |
11717 | child_die = sibling_die (child_die)) | |
11718 | { | |
96408a79 | 11719 | struct call_site_parameter *parameter; |
1788b2d3 | 11720 | struct attribute *loc, *origin; |
96408a79 SA |
11721 | |
11722 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11723 | { | |
11724 | /* Already printed the complaint above. */ | |
11725 | continue; | |
11726 | } | |
11727 | ||
11728 | gdb_assert (call_site->parameter_count < nparams); | |
11729 | parameter = &call_site->parameter[call_site->parameter_count]; | |
11730 | ||
1788b2d3 JK |
11731 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
11732 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
11733 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 11734 | |
24c5c679 | 11735 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 | 11736 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
7771576e | 11737 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 JK |
11738 | { |
11739 | sect_offset offset; | |
11740 | ||
11741 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
11742 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
11743 | if (!offset_in_cu_p (&cu->header, offset)) |
11744 | { | |
11745 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
11746 | binding can be done only inside one CU. Such referenced DIE | |
11747 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
11748 | complaint (&symfile_complaints, | |
11749 | _("DW_AT_abstract_origin offset is not in CU for " | |
11750 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11751 | "[in module %s]"), | |
4262abfb | 11752 | child_die->offset.sect_off, objfile_name (objfile)); |
d76b7dbc JK |
11753 | continue; |
11754 | } | |
1788b2d3 JK |
11755 | parameter->u.param_offset.cu_off = (offset.sect_off |
11756 | - cu->header.offset.sect_off); | |
11757 | } | |
11758 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
11759 | { |
11760 | complaint (&symfile_complaints, | |
11761 | _("No DW_FORM_block* DW_AT_location for " | |
11762 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11763 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11764 | continue; |
11765 | } | |
24c5c679 | 11766 | else |
96408a79 | 11767 | { |
24c5c679 JK |
11768 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
11769 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
11770 | if (parameter->u.dwarf_reg != -1) | |
11771 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
11772 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
11773 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
11774 | ¶meter->u.fb_offset)) | |
11775 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
11776 | else | |
11777 | { | |
11778 | complaint (&symfile_complaints, | |
11779 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
11780 | "for DW_FORM_block* DW_AT_location is supported for " | |
11781 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11782 | "[in module %s]"), | |
4262abfb | 11783 | child_die->offset.sect_off, objfile_name (objfile)); |
24c5c679 JK |
11784 | continue; |
11785 | } | |
96408a79 SA |
11786 | } |
11787 | ||
11788 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
11789 | if (!attr_form_is_block (attr)) | |
11790 | { | |
11791 | complaint (&symfile_complaints, | |
11792 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
11793 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11794 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11795 | continue; |
11796 | } | |
11797 | parameter->value = DW_BLOCK (attr)->data; | |
11798 | parameter->value_size = DW_BLOCK (attr)->size; | |
11799 | ||
11800 | /* Parameters are not pre-cleared by memset above. */ | |
11801 | parameter->data_value = NULL; | |
11802 | parameter->data_value_size = 0; | |
11803 | call_site->parameter_count++; | |
11804 | ||
11805 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
11806 | if (attr) | |
11807 | { | |
11808 | if (!attr_form_is_block (attr)) | |
11809 | complaint (&symfile_complaints, | |
11810 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
11811 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11812 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11813 | else |
11814 | { | |
11815 | parameter->data_value = DW_BLOCK (attr)->data; | |
11816 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
11817 | } | |
11818 | } | |
11819 | } | |
11820 | } | |
11821 | ||
43039443 | 11822 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
11823 | Return 1 if the attributes are present and valid, otherwise, return 0. |
11824 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
11825 | |
11826 | static int | |
11827 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
11828 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
11829 | struct partial_symtab *ranges_pst) | |
43039443 JK |
11830 | { |
11831 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 11832 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
43039443 JK |
11833 | struct comp_unit_head *cu_header = &cu->header; |
11834 | bfd *obfd = objfile->obfd; | |
11835 | unsigned int addr_size = cu_header->addr_size; | |
11836 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11837 | /* Base address selection entry. */ | |
11838 | CORE_ADDR base; | |
11839 | int found_base; | |
11840 | unsigned int dummy; | |
d521ce57 | 11841 | const gdb_byte *buffer; |
43039443 JK |
11842 | CORE_ADDR marker; |
11843 | int low_set; | |
11844 | CORE_ADDR low = 0; | |
11845 | CORE_ADDR high = 0; | |
ff013f42 | 11846 | CORE_ADDR baseaddr; |
43039443 | 11847 | |
d00adf39 DE |
11848 | found_base = cu->base_known; |
11849 | base = cu->base_address; | |
43039443 | 11850 | |
be391dca | 11851 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11852 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
11853 | { |
11854 | complaint (&symfile_complaints, | |
11855 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
11856 | offset); | |
11857 | return 0; | |
11858 | } | |
dce234bc | 11859 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
11860 | |
11861 | /* Read in the largest possible address. */ | |
11862 | marker = read_address (obfd, buffer, cu, &dummy); | |
11863 | if ((marker & mask) == mask) | |
11864 | { | |
11865 | /* If we found the largest possible address, then | |
11866 | read the base address. */ | |
11867 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11868 | buffer += 2 * addr_size; | |
11869 | offset += 2 * addr_size; | |
11870 | found_base = 1; | |
11871 | } | |
11872 | ||
11873 | low_set = 0; | |
11874 | ||
e7030f15 | 11875 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 11876 | |
43039443 JK |
11877 | while (1) |
11878 | { | |
11879 | CORE_ADDR range_beginning, range_end; | |
11880 | ||
11881 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
11882 | buffer += addr_size; | |
11883 | range_end = read_address (obfd, buffer, cu, &dummy); | |
11884 | buffer += addr_size; | |
11885 | offset += 2 * addr_size; | |
11886 | ||
11887 | /* An end of list marker is a pair of zero addresses. */ | |
11888 | if (range_beginning == 0 && range_end == 0) | |
11889 | /* Found the end of list entry. */ | |
11890 | break; | |
11891 | ||
11892 | /* Each base address selection entry is a pair of 2 values. | |
11893 | The first is the largest possible address, the second is | |
11894 | the base address. Check for a base address here. */ | |
11895 | if ((range_beginning & mask) == mask) | |
11896 | { | |
11897 | /* If we found the largest possible address, then | |
11898 | read the base address. */ | |
11899 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11900 | found_base = 1; | |
11901 | continue; | |
11902 | } | |
11903 | ||
11904 | if (!found_base) | |
11905 | { | |
11906 | /* We have no valid base address for the ranges | |
11907 | data. */ | |
11908 | complaint (&symfile_complaints, | |
11909 | _("Invalid .debug_ranges data (no base address)")); | |
11910 | return 0; | |
11911 | } | |
11912 | ||
9277c30c UW |
11913 | if (range_beginning > range_end) |
11914 | { | |
11915 | /* Inverted range entries are invalid. */ | |
11916 | complaint (&symfile_complaints, | |
11917 | _("Invalid .debug_ranges data (inverted range)")); | |
11918 | return 0; | |
11919 | } | |
11920 | ||
11921 | /* Empty range entries have no effect. */ | |
11922 | if (range_beginning == range_end) | |
11923 | continue; | |
11924 | ||
43039443 JK |
11925 | range_beginning += base; |
11926 | range_end += base; | |
11927 | ||
01093045 DE |
11928 | /* A not-uncommon case of bad debug info. |
11929 | Don't pollute the addrmap with bad data. */ | |
11930 | if (range_beginning + baseaddr == 0 | |
11931 | && !dwarf2_per_objfile->has_section_at_zero) | |
11932 | { | |
11933 | complaint (&symfile_complaints, | |
11934 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11935 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11936 | continue; |
11937 | } | |
11938 | ||
9277c30c | 11939 | if (ranges_pst != NULL) |
3e29f34a MR |
11940 | { |
11941 | CORE_ADDR lowpc; | |
11942 | CORE_ADDR highpc; | |
11943 | ||
11944 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
11945 | range_beginning + baseaddr); | |
11946 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
11947 | range_end + baseaddr); | |
11948 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
11949 | ranges_pst); | |
11950 | } | |
ff013f42 | 11951 | |
43039443 JK |
11952 | /* FIXME: This is recording everything as a low-high |
11953 | segment of consecutive addresses. We should have a | |
11954 | data structure for discontiguous block ranges | |
11955 | instead. */ | |
11956 | if (! low_set) | |
11957 | { | |
11958 | low = range_beginning; | |
11959 | high = range_end; | |
11960 | low_set = 1; | |
11961 | } | |
11962 | else | |
11963 | { | |
11964 | if (range_beginning < low) | |
11965 | low = range_beginning; | |
11966 | if (range_end > high) | |
11967 | high = range_end; | |
11968 | } | |
11969 | } | |
11970 | ||
11971 | if (! low_set) | |
11972 | /* If the first entry is an end-of-list marker, the range | |
11973 | describes an empty scope, i.e. no instructions. */ | |
11974 | return 0; | |
11975 | ||
11976 | if (low_return) | |
11977 | *low_return = low; | |
11978 | if (high_return) | |
11979 | *high_return = high; | |
11980 | return 1; | |
11981 | } | |
11982 | ||
af34e669 DJ |
11983 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
11984 | are present and valid, otherwise, return 0. Return -1 if the range is | |
11985 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 11986 | |
c906108c | 11987 | static int |
af34e669 | 11988 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
11989 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
11990 | struct partial_symtab *pst) | |
c906108c SS |
11991 | { |
11992 | struct attribute *attr; | |
91da1414 | 11993 | struct attribute *attr_high; |
af34e669 DJ |
11994 | CORE_ADDR low = 0; |
11995 | CORE_ADDR high = 0; | |
11996 | int ret = 0; | |
c906108c | 11997 | |
91da1414 MW |
11998 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
11999 | if (attr_high) | |
af34e669 | 12000 | { |
e142c38c | 12001 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 12002 | if (attr) |
91da1414 | 12003 | { |
31aa7e4e JB |
12004 | low = attr_value_as_address (attr); |
12005 | high = attr_value_as_address (attr_high); | |
12006 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12007 | high += low; | |
91da1414 | 12008 | } |
af34e669 DJ |
12009 | else |
12010 | /* Found high w/o low attribute. */ | |
12011 | return 0; | |
12012 | ||
12013 | /* Found consecutive range of addresses. */ | |
12014 | ret = 1; | |
12015 | } | |
c906108c | 12016 | else |
af34e669 | 12017 | { |
e142c38c | 12018 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
12019 | if (attr != NULL) |
12020 | { | |
ab435259 DE |
12021 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12022 | We take advantage of the fact that DW_AT_ranges does not appear | |
12023 | in DW_TAG_compile_unit of DWO files. */ | |
12024 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
12025 | unsigned int ranges_offset = (DW_UNSND (attr) | |
12026 | + (need_ranges_base | |
12027 | ? cu->ranges_base | |
12028 | : 0)); | |
2e3cf129 | 12029 | |
af34e669 | 12030 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 12031 | .debug_ranges section. */ |
2e3cf129 | 12032 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 12033 | return 0; |
43039443 | 12034 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
12035 | ret = -1; |
12036 | } | |
12037 | } | |
c906108c | 12038 | |
9373cf26 JK |
12039 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
12040 | if (high <= low) | |
c906108c SS |
12041 | return 0; |
12042 | ||
12043 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
12044 | eliminate duplicate copies of functions and vtables and such. | |
12045 | The linker will arbitrarily choose one and discard the others. | |
12046 | The AT_*_pc values for such functions refer to local labels in | |
12047 | these sections. If the section from that file was discarded, the | |
12048 | labels are not in the output, so the relocs get a value of 0. | |
12049 | If this is a discarded function, mark the pc bounds as invalid, | |
12050 | so that GDB will ignore it. */ | |
72dca2f5 | 12051 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
12052 | return 0; |
12053 | ||
12054 | *lowpc = low; | |
96408a79 SA |
12055 | if (highpc) |
12056 | *highpc = high; | |
af34e669 | 12057 | return ret; |
c906108c SS |
12058 | } |
12059 | ||
b084d499 JB |
12060 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
12061 | its low and high PC addresses. Do nothing if these addresses could not | |
12062 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
12063 | and HIGHPC to the high address if greater than HIGHPC. */ | |
12064 | ||
12065 | static void | |
12066 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
12067 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12068 | struct dwarf2_cu *cu) | |
12069 | { | |
12070 | CORE_ADDR low, high; | |
12071 | struct die_info *child = die->child; | |
12072 | ||
d85a05f0 | 12073 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
12074 | { |
12075 | *lowpc = min (*lowpc, low); | |
12076 | *highpc = max (*highpc, high); | |
12077 | } | |
12078 | ||
12079 | /* If the language does not allow nested subprograms (either inside | |
12080 | subprograms or lexical blocks), we're done. */ | |
12081 | if (cu->language != language_ada) | |
12082 | return; | |
6e70227d | 12083 | |
b084d499 JB |
12084 | /* Check all the children of the given DIE. If it contains nested |
12085 | subprograms, then check their pc bounds. Likewise, we need to | |
12086 | check lexical blocks as well, as they may also contain subprogram | |
12087 | definitions. */ | |
12088 | while (child && child->tag) | |
12089 | { | |
12090 | if (child->tag == DW_TAG_subprogram | |
12091 | || child->tag == DW_TAG_lexical_block) | |
12092 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
12093 | child = sibling_die (child); | |
12094 | } | |
12095 | } | |
12096 | ||
fae299cd DC |
12097 | /* Get the low and high pc's represented by the scope DIE, and store |
12098 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
12099 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
12100 | ||
12101 | static void | |
12102 | get_scope_pc_bounds (struct die_info *die, | |
12103 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12104 | struct dwarf2_cu *cu) | |
12105 | { | |
12106 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
12107 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
12108 | CORE_ADDR current_low, current_high; | |
12109 | ||
d85a05f0 | 12110 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
12111 | { |
12112 | best_low = current_low; | |
12113 | best_high = current_high; | |
12114 | } | |
12115 | else | |
12116 | { | |
12117 | struct die_info *child = die->child; | |
12118 | ||
12119 | while (child && child->tag) | |
12120 | { | |
12121 | switch (child->tag) { | |
12122 | case DW_TAG_subprogram: | |
b084d499 | 12123 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
12124 | break; |
12125 | case DW_TAG_namespace: | |
f55ee35c | 12126 | case DW_TAG_module: |
fae299cd DC |
12127 | /* FIXME: carlton/2004-01-16: Should we do this for |
12128 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
12129 | that current GCC's always emit the DIEs corresponding | |
12130 | to definitions of methods of classes as children of a | |
12131 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
12132 | the DIEs giving the declarations, which could be | |
12133 | anywhere). But I don't see any reason why the | |
12134 | standards says that they have to be there. */ | |
12135 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
12136 | ||
12137 | if (current_low != ((CORE_ADDR) -1)) | |
12138 | { | |
12139 | best_low = min (best_low, current_low); | |
12140 | best_high = max (best_high, current_high); | |
12141 | } | |
12142 | break; | |
12143 | default: | |
0963b4bd | 12144 | /* Ignore. */ |
fae299cd DC |
12145 | break; |
12146 | } | |
12147 | ||
12148 | child = sibling_die (child); | |
12149 | } | |
12150 | } | |
12151 | ||
12152 | *lowpc = best_low; | |
12153 | *highpc = best_high; | |
12154 | } | |
12155 | ||
801e3a5b JB |
12156 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
12157 | in DIE. */ | |
380bca97 | 12158 | |
801e3a5b JB |
12159 | static void |
12160 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
12161 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
12162 | { | |
bb5ed363 | 12163 | struct objfile *objfile = cu->objfile; |
3e29f34a | 12164 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 12165 | struct attribute *attr; |
91da1414 | 12166 | struct attribute *attr_high; |
801e3a5b | 12167 | |
91da1414 MW |
12168 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12169 | if (attr_high) | |
801e3a5b | 12170 | { |
801e3a5b JB |
12171 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
12172 | if (attr) | |
12173 | { | |
31aa7e4e JB |
12174 | CORE_ADDR low = attr_value_as_address (attr); |
12175 | CORE_ADDR high = attr_value_as_address (attr_high); | |
12176 | ||
12177 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12178 | high += low; | |
9a619af0 | 12179 | |
3e29f34a MR |
12180 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
12181 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
12182 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
12183 | } |
12184 | } | |
12185 | ||
12186 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
12187 | if (attr) | |
12188 | { | |
bb5ed363 | 12189 | bfd *obfd = objfile->obfd; |
ab435259 DE |
12190 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12191 | We take advantage of the fact that DW_AT_ranges does not appear | |
12192 | in DW_TAG_compile_unit of DWO files. */ | |
12193 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
12194 | |
12195 | /* The value of the DW_AT_ranges attribute is the offset of the | |
12196 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
12197 | unsigned long offset = (DW_UNSND (attr) |
12198 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 12199 | const gdb_byte *buffer; |
801e3a5b JB |
12200 | |
12201 | /* For some target architectures, but not others, the | |
12202 | read_address function sign-extends the addresses it returns. | |
12203 | To recognize base address selection entries, we need a | |
12204 | mask. */ | |
12205 | unsigned int addr_size = cu->header.addr_size; | |
12206 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12207 | ||
12208 | /* The base address, to which the next pair is relative. Note | |
12209 | that this 'base' is a DWARF concept: most entries in a range | |
12210 | list are relative, to reduce the number of relocs against the | |
12211 | debugging information. This is separate from this function's | |
12212 | 'baseaddr' argument, which GDB uses to relocate debugging | |
12213 | information from a shared library based on the address at | |
12214 | which the library was loaded. */ | |
d00adf39 DE |
12215 | CORE_ADDR base = cu->base_address; |
12216 | int base_known = cu->base_known; | |
801e3a5b | 12217 | |
d62bfeaf | 12218 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 12219 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
12220 | { |
12221 | complaint (&symfile_complaints, | |
12222 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
12223 | offset); | |
12224 | return; | |
12225 | } | |
d62bfeaf | 12226 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
12227 | |
12228 | for (;;) | |
12229 | { | |
12230 | unsigned int bytes_read; | |
12231 | CORE_ADDR start, end; | |
12232 | ||
12233 | start = read_address (obfd, buffer, cu, &bytes_read); | |
12234 | buffer += bytes_read; | |
12235 | end = read_address (obfd, buffer, cu, &bytes_read); | |
12236 | buffer += bytes_read; | |
12237 | ||
12238 | /* Did we find the end of the range list? */ | |
12239 | if (start == 0 && end == 0) | |
12240 | break; | |
12241 | ||
12242 | /* Did we find a base address selection entry? */ | |
12243 | else if ((start & base_select_mask) == base_select_mask) | |
12244 | { | |
12245 | base = end; | |
12246 | base_known = 1; | |
12247 | } | |
12248 | ||
12249 | /* We found an ordinary address range. */ | |
12250 | else | |
12251 | { | |
12252 | if (!base_known) | |
12253 | { | |
12254 | complaint (&symfile_complaints, | |
3e43a32a MS |
12255 | _("Invalid .debug_ranges data " |
12256 | "(no base address)")); | |
801e3a5b JB |
12257 | return; |
12258 | } | |
12259 | ||
9277c30c UW |
12260 | if (start > end) |
12261 | { | |
12262 | /* Inverted range entries are invalid. */ | |
12263 | complaint (&symfile_complaints, | |
12264 | _("Invalid .debug_ranges data " | |
12265 | "(inverted range)")); | |
12266 | return; | |
12267 | } | |
12268 | ||
12269 | /* Empty range entries have no effect. */ | |
12270 | if (start == end) | |
12271 | continue; | |
12272 | ||
01093045 DE |
12273 | start += base + baseaddr; |
12274 | end += base + baseaddr; | |
12275 | ||
12276 | /* A not-uncommon case of bad debug info. | |
12277 | Don't pollute the addrmap with bad data. */ | |
12278 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
12279 | { | |
12280 | complaint (&symfile_complaints, | |
12281 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 12282 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
12283 | continue; |
12284 | } | |
12285 | ||
3e29f34a MR |
12286 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
12287 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
01093045 | 12288 | record_block_range (block, start, end - 1); |
801e3a5b JB |
12289 | } |
12290 | } | |
12291 | } | |
12292 | } | |
12293 | ||
685b1105 JK |
12294 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
12295 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 12296 | |
685b1105 JK |
12297 | static void |
12298 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
12299 | { |
12300 | const char *cs; | |
38360086 | 12301 | int major, minor; |
60d5a603 JK |
12302 | |
12303 | if (cu->producer == NULL) | |
12304 | { | |
12305 | /* For unknown compilers expect their behavior is DWARF version | |
12306 | compliant. | |
12307 | ||
12308 | GCC started to support .debug_types sections by -gdwarf-4 since | |
12309 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
12310 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
12311 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
12312 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 12313 | } |
b1ffba5a | 12314 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 12315 | { |
38360086 MW |
12316 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
12317 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 12318 | } |
61012eef | 12319 | else if (startswith (cu->producer, "Intel(R) C")) |
685b1105 JK |
12320 | cu->producer_is_icc = 1; |
12321 | else | |
12322 | { | |
12323 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
12324 | compliant. */ | |
60d5a603 JK |
12325 | } |
12326 | ||
ba919b58 | 12327 | cu->checked_producer = 1; |
685b1105 | 12328 | } |
ba919b58 | 12329 | |
685b1105 JK |
12330 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
12331 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
12332 | during 4.6.0 experimental. */ | |
12333 | ||
12334 | static int | |
12335 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
12336 | { | |
12337 | if (!cu->checked_producer) | |
12338 | check_producer (cu); | |
12339 | ||
12340 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
12341 | } |
12342 | ||
12343 | /* Return the default accessibility type if it is not overriden by | |
12344 | DW_AT_accessibility. */ | |
12345 | ||
12346 | static enum dwarf_access_attribute | |
12347 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
12348 | { | |
12349 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
12350 | { | |
12351 | /* The default DWARF 2 accessibility for members is public, the default | |
12352 | accessibility for inheritance is private. */ | |
12353 | ||
12354 | if (die->tag != DW_TAG_inheritance) | |
12355 | return DW_ACCESS_public; | |
12356 | else | |
12357 | return DW_ACCESS_private; | |
12358 | } | |
12359 | else | |
12360 | { | |
12361 | /* DWARF 3+ defines the default accessibility a different way. The same | |
12362 | rules apply now for DW_TAG_inheritance as for the members and it only | |
12363 | depends on the container kind. */ | |
12364 | ||
12365 | if (die->parent->tag == DW_TAG_class_type) | |
12366 | return DW_ACCESS_private; | |
12367 | else | |
12368 | return DW_ACCESS_public; | |
12369 | } | |
12370 | } | |
12371 | ||
74ac6d43 TT |
12372 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
12373 | offset. If the attribute was not found return 0, otherwise return | |
12374 | 1. If it was found but could not properly be handled, set *OFFSET | |
12375 | to 0. */ | |
12376 | ||
12377 | static int | |
12378 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
12379 | LONGEST *offset) | |
12380 | { | |
12381 | struct attribute *attr; | |
12382 | ||
12383 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
12384 | if (attr != NULL) | |
12385 | { | |
12386 | *offset = 0; | |
12387 | ||
12388 | /* Note that we do not check for a section offset first here. | |
12389 | This is because DW_AT_data_member_location is new in DWARF 4, | |
12390 | so if we see it, we can assume that a constant form is really | |
12391 | a constant and not a section offset. */ | |
12392 | if (attr_form_is_constant (attr)) | |
12393 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
12394 | else if (attr_form_is_section_offset (attr)) | |
12395 | dwarf2_complex_location_expr_complaint (); | |
12396 | else if (attr_form_is_block (attr)) | |
12397 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
12398 | else | |
12399 | dwarf2_complex_location_expr_complaint (); | |
12400 | ||
12401 | return 1; | |
12402 | } | |
12403 | ||
12404 | return 0; | |
12405 | } | |
12406 | ||
c906108c SS |
12407 | /* Add an aggregate field to the field list. */ |
12408 | ||
12409 | static void | |
107d2387 | 12410 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12411 | struct dwarf2_cu *cu) |
6e70227d | 12412 | { |
e7c27a73 | 12413 | struct objfile *objfile = cu->objfile; |
5e2b427d | 12414 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12415 | struct nextfield *new_field; |
12416 | struct attribute *attr; | |
12417 | struct field *fp; | |
15d034d0 | 12418 | const char *fieldname = ""; |
c906108c SS |
12419 | |
12420 | /* Allocate a new field list entry and link it in. */ | |
12421 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 12422 | make_cleanup (xfree, new_field); |
c906108c | 12423 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
12424 | |
12425 | if (die->tag == DW_TAG_inheritance) | |
12426 | { | |
12427 | new_field->next = fip->baseclasses; | |
12428 | fip->baseclasses = new_field; | |
12429 | } | |
12430 | else | |
12431 | { | |
12432 | new_field->next = fip->fields; | |
12433 | fip->fields = new_field; | |
12434 | } | |
c906108c SS |
12435 | fip->nfields++; |
12436 | ||
e142c38c | 12437 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
12438 | if (attr) |
12439 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
12440 | else |
12441 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
12442 | if (new_field->accessibility != DW_ACCESS_public) |
12443 | fip->non_public_fields = 1; | |
60d5a603 | 12444 | |
e142c38c | 12445 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
12446 | if (attr) |
12447 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
12448 | else |
12449 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
12450 | |
12451 | fp = &new_field->field; | |
a9a9bd0f | 12452 | |
e142c38c | 12453 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 12454 | { |
74ac6d43 TT |
12455 | LONGEST offset; |
12456 | ||
a9a9bd0f | 12457 | /* Data member other than a C++ static data member. */ |
6e70227d | 12458 | |
c906108c | 12459 | /* Get type of field. */ |
e7c27a73 | 12460 | fp->type = die_type (die, cu); |
c906108c | 12461 | |
d6a843b5 | 12462 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 12463 | |
c906108c | 12464 | /* Get bit size of field (zero if none). */ |
e142c38c | 12465 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
12466 | if (attr) |
12467 | { | |
12468 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
12469 | } | |
12470 | else | |
12471 | { | |
12472 | FIELD_BITSIZE (*fp) = 0; | |
12473 | } | |
12474 | ||
12475 | /* Get bit offset of field. */ | |
74ac6d43 TT |
12476 | if (handle_data_member_location (die, cu, &offset)) |
12477 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 12478 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
12479 | if (attr) |
12480 | { | |
5e2b427d | 12481 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
12482 | { |
12483 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
12484 | additional bit offset from the MSB of the containing |
12485 | anonymous object to the MSB of the field. We don't | |
12486 | have to do anything special since we don't need to | |
12487 | know the size of the anonymous object. */ | |
f41f5e61 | 12488 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
12489 | } |
12490 | else | |
12491 | { | |
12492 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
12493 | MSB of the anonymous object, subtract off the number of |
12494 | bits from the MSB of the field to the MSB of the | |
12495 | object, and then subtract off the number of bits of | |
12496 | the field itself. The result is the bit offset of | |
12497 | the LSB of the field. */ | |
c906108c SS |
12498 | int anonymous_size; |
12499 | int bit_offset = DW_UNSND (attr); | |
12500 | ||
e142c38c | 12501 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12502 | if (attr) |
12503 | { | |
12504 | /* The size of the anonymous object containing | |
12505 | the bit field is explicit, so use the | |
12506 | indicated size (in bytes). */ | |
12507 | anonymous_size = DW_UNSND (attr); | |
12508 | } | |
12509 | else | |
12510 | { | |
12511 | /* The size of the anonymous object containing | |
12512 | the bit field must be inferred from the type | |
12513 | attribute of the data member containing the | |
12514 | bit field. */ | |
12515 | anonymous_size = TYPE_LENGTH (fp->type); | |
12516 | } | |
f41f5e61 PA |
12517 | SET_FIELD_BITPOS (*fp, |
12518 | (FIELD_BITPOS (*fp) | |
12519 | + anonymous_size * bits_per_byte | |
12520 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
12521 | } |
12522 | } | |
12523 | ||
12524 | /* Get name of field. */ | |
39cbfefa DJ |
12525 | fieldname = dwarf2_name (die, cu); |
12526 | if (fieldname == NULL) | |
12527 | fieldname = ""; | |
d8151005 DJ |
12528 | |
12529 | /* The name is already allocated along with this objfile, so we don't | |
12530 | need to duplicate it for the type. */ | |
12531 | fp->name = fieldname; | |
c906108c SS |
12532 | |
12533 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 12534 | pointer or virtual base class pointer) to private. */ |
e142c38c | 12535 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 12536 | { |
d48cc9dd | 12537 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
12538 | new_field->accessibility = DW_ACCESS_private; |
12539 | fip->non_public_fields = 1; | |
12540 | } | |
12541 | } | |
a9a9bd0f | 12542 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 12543 | { |
a9a9bd0f DC |
12544 | /* C++ static member. */ |
12545 | ||
12546 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
12547 | is a declaration, but all versions of G++ as of this writing | |
12548 | (so through at least 3.2.1) incorrectly generate | |
12549 | DW_TAG_variable tags. */ | |
6e70227d | 12550 | |
ff355380 | 12551 | const char *physname; |
c906108c | 12552 | |
a9a9bd0f | 12553 | /* Get name of field. */ |
39cbfefa DJ |
12554 | fieldname = dwarf2_name (die, cu); |
12555 | if (fieldname == NULL) | |
c906108c SS |
12556 | return; |
12557 | ||
254e6b9e | 12558 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
12559 | if (attr |
12560 | /* Only create a symbol if this is an external value. | |
12561 | new_symbol checks this and puts the value in the global symbol | |
12562 | table, which we want. If it is not external, new_symbol | |
12563 | will try to put the value in cu->list_in_scope which is wrong. */ | |
12564 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
12565 | { |
12566 | /* A static const member, not much different than an enum as far as | |
12567 | we're concerned, except that we can support more types. */ | |
12568 | new_symbol (die, NULL, cu); | |
12569 | } | |
12570 | ||
2df3850c | 12571 | /* Get physical name. */ |
ff355380 | 12572 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 12573 | |
d8151005 DJ |
12574 | /* The name is already allocated along with this objfile, so we don't |
12575 | need to duplicate it for the type. */ | |
12576 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 12577 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 12578 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
12579 | } |
12580 | else if (die->tag == DW_TAG_inheritance) | |
12581 | { | |
74ac6d43 | 12582 | LONGEST offset; |
d4b96c9a | 12583 | |
74ac6d43 TT |
12584 | /* C++ base class field. */ |
12585 | if (handle_data_member_location (die, cu, &offset)) | |
12586 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 12587 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 12588 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
12589 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
12590 | fip->nbaseclasses++; | |
12591 | } | |
12592 | } | |
12593 | ||
98751a41 JK |
12594 | /* Add a typedef defined in the scope of the FIP's class. */ |
12595 | ||
12596 | static void | |
12597 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
12598 | struct dwarf2_cu *cu) | |
6e70227d | 12599 | { |
98751a41 | 12600 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
12601 | struct typedef_field_list *new_field; |
12602 | struct attribute *attr; | |
12603 | struct typedef_field *fp; | |
12604 | char *fieldname = ""; | |
12605 | ||
12606 | /* Allocate a new field list entry and link it in. */ | |
12607 | new_field = xzalloc (sizeof (*new_field)); | |
12608 | make_cleanup (xfree, new_field); | |
12609 | ||
12610 | gdb_assert (die->tag == DW_TAG_typedef); | |
12611 | ||
12612 | fp = &new_field->field; | |
12613 | ||
12614 | /* Get name of field. */ | |
12615 | fp->name = dwarf2_name (die, cu); | |
12616 | if (fp->name == NULL) | |
12617 | return; | |
12618 | ||
12619 | fp->type = read_type_die (die, cu); | |
12620 | ||
12621 | new_field->next = fip->typedef_field_list; | |
12622 | fip->typedef_field_list = new_field; | |
12623 | fip->typedef_field_list_count++; | |
12624 | } | |
12625 | ||
c906108c SS |
12626 | /* Create the vector of fields, and attach it to the type. */ |
12627 | ||
12628 | static void | |
fba45db2 | 12629 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12630 | struct dwarf2_cu *cu) |
c906108c SS |
12631 | { |
12632 | int nfields = fip->nfields; | |
12633 | ||
12634 | /* Record the field count, allocate space for the array of fields, | |
12635 | and create blank accessibility bitfields if necessary. */ | |
12636 | TYPE_NFIELDS (type) = nfields; | |
12637 | TYPE_FIELDS (type) = (struct field *) | |
12638 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
12639 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
12640 | ||
b4ba55a1 | 12641 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
12642 | { |
12643 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12644 | ||
12645 | TYPE_FIELD_PRIVATE_BITS (type) = | |
12646 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12647 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
12648 | ||
12649 | TYPE_FIELD_PROTECTED_BITS (type) = | |
12650 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12651 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
12652 | ||
774b6a14 TT |
12653 | TYPE_FIELD_IGNORE_BITS (type) = |
12654 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12655 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
12656 | } |
12657 | ||
12658 | /* If the type has baseclasses, allocate and clear a bit vector for | |
12659 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 12660 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
12661 | { |
12662 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 12663 | unsigned char *pointer; |
c906108c SS |
12664 | |
12665 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
12666 | pointer = TYPE_ALLOC (type, num_bytes); |
12667 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
12668 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
12669 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
12670 | } | |
12671 | ||
3e43a32a MS |
12672 | /* Copy the saved-up fields into the field vector. Start from the head of |
12673 | the list, adding to the tail of the field array, so that they end up in | |
12674 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
12675 | while (nfields-- > 0) |
12676 | { | |
7d0ccb61 DJ |
12677 | struct nextfield *fieldp; |
12678 | ||
12679 | if (fip->fields) | |
12680 | { | |
12681 | fieldp = fip->fields; | |
12682 | fip->fields = fieldp->next; | |
12683 | } | |
12684 | else | |
12685 | { | |
12686 | fieldp = fip->baseclasses; | |
12687 | fip->baseclasses = fieldp->next; | |
12688 | } | |
12689 | ||
12690 | TYPE_FIELD (type, nfields) = fieldp->field; | |
12691 | switch (fieldp->accessibility) | |
c906108c | 12692 | { |
c5aa993b | 12693 | case DW_ACCESS_private: |
b4ba55a1 JB |
12694 | if (cu->language != language_ada) |
12695 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 12696 | break; |
c906108c | 12697 | |
c5aa993b | 12698 | case DW_ACCESS_protected: |
b4ba55a1 JB |
12699 | if (cu->language != language_ada) |
12700 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 12701 | break; |
c906108c | 12702 | |
c5aa993b JM |
12703 | case DW_ACCESS_public: |
12704 | break; | |
c906108c | 12705 | |
c5aa993b JM |
12706 | default: |
12707 | /* Unknown accessibility. Complain and treat it as public. */ | |
12708 | { | |
e2e0b3e5 | 12709 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 12710 | fieldp->accessibility); |
c5aa993b JM |
12711 | } |
12712 | break; | |
c906108c SS |
12713 | } |
12714 | if (nfields < fip->nbaseclasses) | |
12715 | { | |
7d0ccb61 | 12716 | switch (fieldp->virtuality) |
c906108c | 12717 | { |
c5aa993b JM |
12718 | case DW_VIRTUALITY_virtual: |
12719 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 12720 | if (cu->language == language_ada) |
a73c6dcd | 12721 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
12722 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
12723 | break; | |
c906108c SS |
12724 | } |
12725 | } | |
c906108c SS |
12726 | } |
12727 | } | |
12728 | ||
7d27a96d TT |
12729 | /* Return true if this member function is a constructor, false |
12730 | otherwise. */ | |
12731 | ||
12732 | static int | |
12733 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
12734 | { | |
12735 | const char *fieldname; | |
fe978cb0 | 12736 | const char *type_name; |
7d27a96d TT |
12737 | int len; |
12738 | ||
12739 | if (die->parent == NULL) | |
12740 | return 0; | |
12741 | ||
12742 | if (die->parent->tag != DW_TAG_structure_type | |
12743 | && die->parent->tag != DW_TAG_union_type | |
12744 | && die->parent->tag != DW_TAG_class_type) | |
12745 | return 0; | |
12746 | ||
12747 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
12748 | type_name = dwarf2_name (die->parent, cu); |
12749 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
12750 | return 0; |
12751 | ||
12752 | len = strlen (fieldname); | |
fe978cb0 PA |
12753 | return (strncmp (fieldname, type_name, len) == 0 |
12754 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
12755 | } |
12756 | ||
c906108c SS |
12757 | /* Add a member function to the proper fieldlist. */ |
12758 | ||
12759 | static void | |
107d2387 | 12760 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12761 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 12762 | { |
e7c27a73 | 12763 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12764 | struct attribute *attr; |
12765 | struct fnfieldlist *flp; | |
12766 | int i; | |
12767 | struct fn_field *fnp; | |
15d034d0 | 12768 | const char *fieldname; |
c906108c | 12769 | struct nextfnfield *new_fnfield; |
f792889a | 12770 | struct type *this_type; |
60d5a603 | 12771 | enum dwarf_access_attribute accessibility; |
c906108c | 12772 | |
b4ba55a1 | 12773 | if (cu->language == language_ada) |
a73c6dcd | 12774 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 12775 | |
2df3850c | 12776 | /* Get name of member function. */ |
39cbfefa DJ |
12777 | fieldname = dwarf2_name (die, cu); |
12778 | if (fieldname == NULL) | |
2df3850c | 12779 | return; |
c906108c | 12780 | |
c906108c SS |
12781 | /* Look up member function name in fieldlist. */ |
12782 | for (i = 0; i < fip->nfnfields; i++) | |
12783 | { | |
27bfe10e | 12784 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
12785 | break; |
12786 | } | |
12787 | ||
12788 | /* Create new list element if necessary. */ | |
12789 | if (i < fip->nfnfields) | |
12790 | flp = &fip->fnfieldlists[i]; | |
12791 | else | |
12792 | { | |
12793 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
12794 | { | |
12795 | fip->fnfieldlists = (struct fnfieldlist *) | |
12796 | xrealloc (fip->fnfieldlists, | |
12797 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 12798 | * sizeof (struct fnfieldlist)); |
c906108c | 12799 | if (fip->nfnfields == 0) |
c13c43fd | 12800 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
12801 | } |
12802 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
12803 | flp->name = fieldname; | |
12804 | flp->length = 0; | |
12805 | flp->head = NULL; | |
3da10d80 | 12806 | i = fip->nfnfields++; |
c906108c SS |
12807 | } |
12808 | ||
12809 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 12810 | entry. */ |
c906108c | 12811 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 12812 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
12813 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
12814 | new_fnfield->next = flp->head; | |
12815 | flp->head = new_fnfield; | |
12816 | flp->length++; | |
12817 | ||
12818 | /* Fill in the member function field info. */ | |
12819 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
12820 | |
12821 | /* Delay processing of the physname until later. */ | |
12822 | if (cu->language == language_cplus || cu->language == language_java) | |
12823 | { | |
12824 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
12825 | die, cu); | |
12826 | } | |
12827 | else | |
12828 | { | |
1d06ead6 | 12829 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
12830 | fnp->physname = physname ? physname : ""; |
12831 | } | |
12832 | ||
c906108c | 12833 | fnp->type = alloc_type (objfile); |
f792889a DJ |
12834 | this_type = read_type_die (die, cu); |
12835 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 12836 | { |
f792889a | 12837 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 12838 | |
f792889a | 12839 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
12840 | of the method itself (TYPE_CODE_METHOD). */ |
12841 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
12842 | TYPE_TARGET_TYPE (this_type), |
12843 | TYPE_FIELDS (this_type), | |
12844 | TYPE_NFIELDS (this_type), | |
12845 | TYPE_VARARGS (this_type)); | |
c906108c SS |
12846 | |
12847 | /* Handle static member functions. | |
c5aa993b | 12848 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
12849 | member functions. G++ helps GDB by marking the first |
12850 | parameter for non-static member functions (which is the this | |
12851 | pointer) as artificial. We obtain this information from | |
12852 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 12853 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
12854 | fnp->voffset = VOFFSET_STATIC; |
12855 | } | |
12856 | else | |
e2e0b3e5 | 12857 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 12858 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
12859 | |
12860 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 12861 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 12862 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 12863 | |
3e43a32a MS |
12864 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
12865 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
12866 | |
12867 | /* Get accessibility. */ | |
e142c38c | 12868 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 12869 | if (attr) |
60d5a603 JK |
12870 | accessibility = DW_UNSND (attr); |
12871 | else | |
12872 | accessibility = dwarf2_default_access_attribute (die, cu); | |
12873 | switch (accessibility) | |
c906108c | 12874 | { |
60d5a603 JK |
12875 | case DW_ACCESS_private: |
12876 | fnp->is_private = 1; | |
12877 | break; | |
12878 | case DW_ACCESS_protected: | |
12879 | fnp->is_protected = 1; | |
12880 | break; | |
c906108c SS |
12881 | } |
12882 | ||
b02dede2 | 12883 | /* Check for artificial methods. */ |
e142c38c | 12884 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
12885 | if (attr && DW_UNSND (attr) != 0) |
12886 | fnp->is_artificial = 1; | |
12887 | ||
7d27a96d TT |
12888 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
12889 | ||
0d564a31 | 12890 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
12891 | function. For older versions of GCC, this is an offset in the |
12892 | appropriate virtual table, as specified by DW_AT_containing_type. | |
12893 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
12894 | to the object address. */ |
12895 | ||
e142c38c | 12896 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 12897 | if (attr) |
8e19ed76 | 12898 | { |
aec5aa8b | 12899 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 12900 | { |
aec5aa8b TT |
12901 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
12902 | { | |
12903 | /* Old-style GCC. */ | |
12904 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
12905 | } | |
12906 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12907 | || (DW_BLOCK (attr)->size > 1 | |
12908 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
12909 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
12910 | { | |
12911 | struct dwarf_block blk; | |
12912 | int offset; | |
12913 | ||
12914 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12915 | ? 1 : 2); | |
12916 | blk.size = DW_BLOCK (attr)->size - offset; | |
12917 | blk.data = DW_BLOCK (attr)->data + offset; | |
12918 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
12919 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
12920 | dwarf2_complex_location_expr_complaint (); | |
12921 | else | |
12922 | fnp->voffset /= cu->header.addr_size; | |
12923 | fnp->voffset += 2; | |
12924 | } | |
12925 | else | |
12926 | dwarf2_complex_location_expr_complaint (); | |
12927 | ||
12928 | if (!fnp->fcontext) | |
7e993ebf KS |
12929 | { |
12930 | /* If there is no `this' field and no DW_AT_containing_type, | |
12931 | we cannot actually find a base class context for the | |
12932 | vtable! */ | |
12933 | if (TYPE_NFIELDS (this_type) == 0 | |
12934 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
12935 | { | |
12936 | complaint (&symfile_complaints, | |
12937 | _("cannot determine context for virtual member " | |
12938 | "function \"%s\" (offset %d)"), | |
12939 | fieldname, die->offset.sect_off); | |
12940 | } | |
12941 | else | |
12942 | { | |
12943 | fnp->fcontext | |
12944 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
12945 | } | |
12946 | } | |
aec5aa8b | 12947 | } |
3690dd37 | 12948 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 12949 | { |
4d3c2250 | 12950 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
12951 | } |
12952 | else | |
12953 | { | |
4d3c2250 KB |
12954 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
12955 | fieldname); | |
8e19ed76 | 12956 | } |
0d564a31 | 12957 | } |
d48cc9dd DJ |
12958 | else |
12959 | { | |
12960 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
12961 | if (attr && DW_UNSND (attr)) | |
12962 | { | |
12963 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
12964 | complaint (&symfile_complaints, | |
3e43a32a MS |
12965 | _("Member function \"%s\" (offset %d) is virtual " |
12966 | "but the vtable offset is not specified"), | |
b64f50a1 | 12967 | fieldname, die->offset.sect_off); |
9655fd1a | 12968 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
12969 | TYPE_CPLUS_DYNAMIC (type) = 1; |
12970 | } | |
12971 | } | |
c906108c SS |
12972 | } |
12973 | ||
12974 | /* Create the vector of member function fields, and attach it to the type. */ | |
12975 | ||
12976 | static void | |
fba45db2 | 12977 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12978 | struct dwarf2_cu *cu) |
c906108c SS |
12979 | { |
12980 | struct fnfieldlist *flp; | |
c906108c SS |
12981 | int i; |
12982 | ||
b4ba55a1 | 12983 | if (cu->language == language_ada) |
a73c6dcd | 12984 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 12985 | |
c906108c SS |
12986 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
12987 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
12988 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
12989 | ||
12990 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
12991 | { | |
12992 | struct nextfnfield *nfp = flp->head; | |
12993 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
12994 | int k; | |
12995 | ||
12996 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
12997 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
12998 | fn_flp->fn_fields = (struct fn_field *) | |
12999 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
13000 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 13001 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
13002 | } |
13003 | ||
13004 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
13005 | } |
13006 | ||
1168df01 JB |
13007 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
13008 | language, zero otherwise. */ | |
13009 | static int | |
13010 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
13011 | { | |
13012 | static const char vptr[] = "_vptr"; | |
987504bb | 13013 | static const char vtable[] = "vtable"; |
1168df01 | 13014 | |
987504bb JJ |
13015 | /* Look for the C++ and Java forms of the vtable. */ |
13016 | if ((cu->language == language_java | |
61012eef GB |
13017 | && startswith (name, vtable)) |
13018 | || (startswith (name, vptr) | |
987504bb | 13019 | && is_cplus_marker (name[sizeof (vptr) - 1]))) |
1168df01 JB |
13020 | return 1; |
13021 | ||
13022 | return 0; | |
13023 | } | |
13024 | ||
c0dd20ea | 13025 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
13026 | functions, with the ABI-specified layout. If TYPE describes |
13027 | such a structure, smash it into a member function type. | |
61049d3b DJ |
13028 | |
13029 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
13030 | This is GCC PR debug/28767. */ | |
c0dd20ea | 13031 | |
0b92b5bb TT |
13032 | static void |
13033 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 13034 | { |
09e2d7c7 | 13035 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
13036 | |
13037 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
13038 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
13039 | return; | |
c0dd20ea DJ |
13040 | |
13041 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
13042 | if (TYPE_FIELD_NAME (type, 0) == NULL |
13043 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
13044 | || TYPE_FIELD_NAME (type, 1) == NULL | |
13045 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
13046 | return; | |
c0dd20ea DJ |
13047 | |
13048 | /* Find the type of the method. */ | |
0b92b5bb | 13049 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
13050 | if (pfn_type == NULL |
13051 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
13052 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 13053 | return; |
c0dd20ea DJ |
13054 | |
13055 | /* Look for the "this" argument. */ | |
13056 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
13057 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 13058 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 13059 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 13060 | return; |
c0dd20ea | 13061 | |
09e2d7c7 | 13062 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 13063 | new_type = alloc_type (objfile); |
09e2d7c7 | 13064 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
13065 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
13066 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 13067 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 13068 | } |
1168df01 | 13069 | |
685b1105 JK |
13070 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
13071 | (icc). */ | |
13072 | ||
13073 | static int | |
13074 | producer_is_icc (struct dwarf2_cu *cu) | |
13075 | { | |
13076 | if (!cu->checked_producer) | |
13077 | check_producer (cu); | |
13078 | ||
13079 | return cu->producer_is_icc; | |
13080 | } | |
13081 | ||
c906108c | 13082 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
13083 | (definition) to create a type for the structure or union. Fill in |
13084 | the type's name and general properties; the members will not be | |
83655187 DE |
13085 | processed until process_structure_scope. A symbol table entry for |
13086 | the type will also not be done until process_structure_scope (assuming | |
13087 | the type has a name). | |
c906108c | 13088 | |
c767944b DJ |
13089 | NOTE: we need to call these functions regardless of whether or not the |
13090 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 13091 | structure or union. This gets the type entered into our set of |
83655187 | 13092 | user defined types. */ |
c906108c | 13093 | |
f792889a | 13094 | static struct type * |
134d01f1 | 13095 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13096 | { |
e7c27a73 | 13097 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13098 | struct type *type; |
13099 | struct attribute *attr; | |
15d034d0 | 13100 | const char *name; |
c906108c | 13101 | |
348e048f DE |
13102 | /* If the definition of this type lives in .debug_types, read that type. |
13103 | Don't follow DW_AT_specification though, that will take us back up | |
13104 | the chain and we want to go down. */ | |
45e58e77 | 13105 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13106 | if (attr) |
13107 | { | |
ac9ec31b | 13108 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13109 | |
ac9ec31b | 13110 | /* The type's CU may not be the same as CU. |
02142a6c | 13111 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13112 | return set_die_type (die, type, cu); |
13113 | } | |
13114 | ||
c0dd20ea | 13115 | type = alloc_type (objfile); |
c906108c | 13116 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 13117 | |
39cbfefa DJ |
13118 | name = dwarf2_name (die, cu); |
13119 | if (name != NULL) | |
c906108c | 13120 | { |
987504bb JJ |
13121 | if (cu->language == language_cplus |
13122 | || cu->language == language_java) | |
63d06c5c | 13123 | { |
15d034d0 | 13124 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
13125 | |
13126 | /* dwarf2_full_name might have already finished building the DIE's | |
13127 | type. If so, there is no need to continue. */ | |
13128 | if (get_die_type (die, cu) != NULL) | |
13129 | return get_die_type (die, cu); | |
13130 | ||
13131 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
13132 | if (die->tag == DW_TAG_structure_type |
13133 | || die->tag == DW_TAG_class_type) | |
13134 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
13135 | } |
13136 | else | |
13137 | { | |
d8151005 DJ |
13138 | /* The name is already allocated along with this objfile, so |
13139 | we don't need to duplicate it for the type. */ | |
7d455152 | 13140 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
13141 | if (die->tag == DW_TAG_class_type) |
13142 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 13143 | } |
c906108c SS |
13144 | } |
13145 | ||
13146 | if (die->tag == DW_TAG_structure_type) | |
13147 | { | |
13148 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
13149 | } | |
13150 | else if (die->tag == DW_TAG_union_type) | |
13151 | { | |
13152 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
13153 | } | |
13154 | else | |
13155 | { | |
4753d33b | 13156 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
13157 | } |
13158 | ||
0cc2414c TT |
13159 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
13160 | TYPE_DECLARED_CLASS (type) = 1; | |
13161 | ||
e142c38c | 13162 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13163 | if (attr) |
13164 | { | |
13165 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13166 | } | |
13167 | else | |
13168 | { | |
13169 | TYPE_LENGTH (type) = 0; | |
13170 | } | |
13171 | ||
422b1cb0 | 13172 | if (producer_is_icc (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 JK |
13173 | { |
13174 | /* ICC does not output the required DW_AT_declaration | |
13175 | on incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 13176 | TYPE_STUB (type) = 1; |
685b1105 JK |
13177 | } |
13178 | else | |
13179 | TYPE_STUB_SUPPORTED (type) = 1; | |
13180 | ||
dc718098 | 13181 | if (die_is_declaration (die, cu)) |
876cecd0 | 13182 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
13183 | else if (attr == NULL && die->child == NULL |
13184 | && producer_is_realview (cu->producer)) | |
13185 | /* RealView does not output the required DW_AT_declaration | |
13186 | on incomplete types. */ | |
13187 | TYPE_STUB (type) = 1; | |
dc718098 | 13188 | |
c906108c SS |
13189 | /* We need to add the type field to the die immediately so we don't |
13190 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 13191 | type within the structure itself. */ |
1c379e20 | 13192 | set_die_type (die, type, cu); |
c906108c | 13193 | |
7e314c57 JK |
13194 | /* set_die_type should be already done. */ |
13195 | set_descriptive_type (type, die, cu); | |
13196 | ||
c767944b DJ |
13197 | return type; |
13198 | } | |
13199 | ||
13200 | /* Finish creating a structure or union type, including filling in | |
13201 | its members and creating a symbol for it. */ | |
13202 | ||
13203 | static void | |
13204 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13205 | { | |
13206 | struct objfile *objfile = cu->objfile; | |
ca040673 | 13207 | struct die_info *child_die; |
c767944b DJ |
13208 | struct type *type; |
13209 | ||
13210 | type = get_die_type (die, cu); | |
13211 | if (type == NULL) | |
13212 | type = read_structure_type (die, cu); | |
13213 | ||
e142c38c | 13214 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
13215 | { |
13216 | struct field_info fi; | |
34eaf542 | 13217 | VEC (symbolp) *template_args = NULL; |
c767944b | 13218 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
13219 | |
13220 | memset (&fi, 0, sizeof (struct field_info)); | |
13221 | ||
639d11d3 | 13222 | child_die = die->child; |
c906108c SS |
13223 | |
13224 | while (child_die && child_die->tag) | |
13225 | { | |
a9a9bd0f DC |
13226 | if (child_die->tag == DW_TAG_member |
13227 | || child_die->tag == DW_TAG_variable) | |
c906108c | 13228 | { |
a9a9bd0f DC |
13229 | /* NOTE: carlton/2002-11-05: A C++ static data member |
13230 | should be a DW_TAG_member that is a declaration, but | |
13231 | all versions of G++ as of this writing (so through at | |
13232 | least 3.2.1) incorrectly generate DW_TAG_variable | |
13233 | tags for them instead. */ | |
e7c27a73 | 13234 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13235 | } |
8713b1b1 | 13236 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 13237 | { |
0963b4bd | 13238 | /* C++ member function. */ |
e7c27a73 | 13239 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
13240 | } |
13241 | else if (child_die->tag == DW_TAG_inheritance) | |
13242 | { | |
13243 | /* C++ base class field. */ | |
e7c27a73 | 13244 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13245 | } |
98751a41 JK |
13246 | else if (child_die->tag == DW_TAG_typedef) |
13247 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
13248 | else if (child_die->tag == DW_TAG_template_type_param |
13249 | || child_die->tag == DW_TAG_template_value_param) | |
13250 | { | |
13251 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13252 | ||
f1078f66 DJ |
13253 | if (arg != NULL) |
13254 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
13255 | } |
13256 | ||
c906108c SS |
13257 | child_die = sibling_die (child_die); |
13258 | } | |
13259 | ||
34eaf542 TT |
13260 | /* Attach template arguments to type. */ |
13261 | if (! VEC_empty (symbolp, template_args)) | |
13262 | { | |
13263 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
13264 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13265 | = VEC_length (symbolp, template_args); | |
13266 | TYPE_TEMPLATE_ARGUMENTS (type) | |
13267 | = obstack_alloc (&objfile->objfile_obstack, | |
13268 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13269 | * sizeof (struct symbol *))); | |
13270 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
13271 | VEC_address (symbolp, template_args), | |
13272 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13273 | * sizeof (struct symbol *))); | |
13274 | VEC_free (symbolp, template_args); | |
13275 | } | |
13276 | ||
c906108c SS |
13277 | /* Attach fields and member functions to the type. */ |
13278 | if (fi.nfields) | |
e7c27a73 | 13279 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
13280 | if (fi.nfnfields) |
13281 | { | |
e7c27a73 | 13282 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 13283 | |
c5aa993b | 13284 | /* Get the type which refers to the base class (possibly this |
c906108c | 13285 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
13286 | class from the DW_AT_containing_type attribute. This use of |
13287 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 13288 | |
e142c38c | 13289 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 13290 | { |
e7c27a73 | 13291 | struct type *t = die_containing_type (die, cu); |
c906108c | 13292 | |
ae6ae975 | 13293 | set_type_vptr_basetype (type, t); |
c906108c SS |
13294 | if (type == t) |
13295 | { | |
c906108c SS |
13296 | int i; |
13297 | ||
13298 | /* Our own class provides vtbl ptr. */ | |
13299 | for (i = TYPE_NFIELDS (t) - 1; | |
13300 | i >= TYPE_N_BASECLASSES (t); | |
13301 | --i) | |
13302 | { | |
0d5cff50 | 13303 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 13304 | |
1168df01 | 13305 | if (is_vtable_name (fieldname, cu)) |
c906108c | 13306 | { |
ae6ae975 | 13307 | set_type_vptr_fieldno (type, i); |
c906108c SS |
13308 | break; |
13309 | } | |
13310 | } | |
13311 | ||
13312 | /* Complain if virtual function table field not found. */ | |
13313 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 13314 | complaint (&symfile_complaints, |
3e43a32a MS |
13315 | _("virtual function table pointer " |
13316 | "not found when defining class '%s'"), | |
4d3c2250 KB |
13317 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
13318 | ""); | |
c906108c SS |
13319 | } |
13320 | else | |
13321 | { | |
ae6ae975 | 13322 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
13323 | } |
13324 | } | |
f6235d4c | 13325 | else if (cu->producer |
61012eef | 13326 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
13327 | { |
13328 | /* The IBM XLC compiler does not provide direct indication | |
13329 | of the containing type, but the vtable pointer is | |
13330 | always named __vfp. */ | |
13331 | ||
13332 | int i; | |
13333 | ||
13334 | for (i = TYPE_NFIELDS (type) - 1; | |
13335 | i >= TYPE_N_BASECLASSES (type); | |
13336 | --i) | |
13337 | { | |
13338 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
13339 | { | |
ae6ae975 DE |
13340 | set_type_vptr_fieldno (type, i); |
13341 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
13342 | break; |
13343 | } | |
13344 | } | |
13345 | } | |
c906108c | 13346 | } |
98751a41 JK |
13347 | |
13348 | /* Copy fi.typedef_field_list linked list elements content into the | |
13349 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
13350 | if (fi.typedef_field_list) | |
13351 | { | |
13352 | int i = fi.typedef_field_list_count; | |
13353 | ||
a0d7a4ff | 13354 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
13355 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
13356 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
13357 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
13358 | ||
13359 | /* Reverse the list order to keep the debug info elements order. */ | |
13360 | while (--i >= 0) | |
13361 | { | |
13362 | struct typedef_field *dest, *src; | |
6e70227d | 13363 | |
98751a41 JK |
13364 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
13365 | src = &fi.typedef_field_list->field; | |
13366 | fi.typedef_field_list = fi.typedef_field_list->next; | |
13367 | *dest = *src; | |
13368 | } | |
13369 | } | |
c767944b DJ |
13370 | |
13371 | do_cleanups (back_to); | |
eb2a6f42 TT |
13372 | |
13373 | if (HAVE_CPLUS_STRUCT (type)) | |
13374 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 13375 | } |
63d06c5c | 13376 | |
bb5ed363 | 13377 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 13378 | |
90aeadfc DC |
13379 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
13380 | snapshots) has been known to create a die giving a declaration | |
13381 | for a class that has, as a child, a die giving a definition for a | |
13382 | nested class. So we have to process our children even if the | |
13383 | current die is a declaration. Normally, of course, a declaration | |
13384 | won't have any children at all. */ | |
134d01f1 | 13385 | |
ca040673 DE |
13386 | child_die = die->child; |
13387 | ||
90aeadfc DC |
13388 | while (child_die != NULL && child_die->tag) |
13389 | { | |
13390 | if (child_die->tag == DW_TAG_member | |
13391 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
13392 | || child_die->tag == DW_TAG_inheritance |
13393 | || child_die->tag == DW_TAG_template_value_param | |
13394 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 13395 | { |
90aeadfc | 13396 | /* Do nothing. */ |
134d01f1 | 13397 | } |
90aeadfc DC |
13398 | else |
13399 | process_die (child_die, cu); | |
134d01f1 | 13400 | |
90aeadfc | 13401 | child_die = sibling_die (child_die); |
134d01f1 DJ |
13402 | } |
13403 | ||
fa4028e9 JB |
13404 | /* Do not consider external references. According to the DWARF standard, |
13405 | these DIEs are identified by the fact that they have no byte_size | |
13406 | attribute, and a declaration attribute. */ | |
13407 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
13408 | || !die_is_declaration (die, cu)) | |
c767944b | 13409 | new_symbol (die, type, cu); |
134d01f1 DJ |
13410 | } |
13411 | ||
55426c9d JB |
13412 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
13413 | update TYPE using some information only available in DIE's children. */ | |
13414 | ||
13415 | static void | |
13416 | update_enumeration_type_from_children (struct die_info *die, | |
13417 | struct type *type, | |
13418 | struct dwarf2_cu *cu) | |
13419 | { | |
13420 | struct obstack obstack; | |
60f7655a | 13421 | struct die_info *child_die; |
55426c9d JB |
13422 | int unsigned_enum = 1; |
13423 | int flag_enum = 1; | |
13424 | ULONGEST mask = 0; | |
13425 | struct cleanup *old_chain; | |
13426 | ||
13427 | obstack_init (&obstack); | |
13428 | old_chain = make_cleanup_obstack_free (&obstack); | |
13429 | ||
60f7655a DE |
13430 | for (child_die = die->child; |
13431 | child_die != NULL && child_die->tag; | |
13432 | child_die = sibling_die (child_die)) | |
55426c9d JB |
13433 | { |
13434 | struct attribute *attr; | |
13435 | LONGEST value; | |
13436 | const gdb_byte *bytes; | |
13437 | struct dwarf2_locexpr_baton *baton; | |
13438 | const char *name; | |
60f7655a | 13439 | |
55426c9d JB |
13440 | if (child_die->tag != DW_TAG_enumerator) |
13441 | continue; | |
13442 | ||
13443 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
13444 | if (attr == NULL) | |
13445 | continue; | |
13446 | ||
13447 | name = dwarf2_name (child_die, cu); | |
13448 | if (name == NULL) | |
13449 | name = "<anonymous enumerator>"; | |
13450 | ||
13451 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
13452 | &value, &bytes, &baton); | |
13453 | if (value < 0) | |
13454 | { | |
13455 | unsigned_enum = 0; | |
13456 | flag_enum = 0; | |
13457 | } | |
13458 | else if ((mask & value) != 0) | |
13459 | flag_enum = 0; | |
13460 | else | |
13461 | mask |= value; | |
13462 | ||
13463 | /* If we already know that the enum type is neither unsigned, nor | |
13464 | a flag type, no need to look at the rest of the enumerates. */ | |
13465 | if (!unsigned_enum && !flag_enum) | |
13466 | break; | |
55426c9d JB |
13467 | } |
13468 | ||
13469 | if (unsigned_enum) | |
13470 | TYPE_UNSIGNED (type) = 1; | |
13471 | if (flag_enum) | |
13472 | TYPE_FLAG_ENUM (type) = 1; | |
13473 | ||
13474 | do_cleanups (old_chain); | |
13475 | } | |
13476 | ||
134d01f1 DJ |
13477 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
13478 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 13479 | |
f792889a | 13480 | static struct type * |
134d01f1 | 13481 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13482 | { |
e7c27a73 | 13483 | struct objfile *objfile = cu->objfile; |
c906108c | 13484 | struct type *type; |
c906108c | 13485 | struct attribute *attr; |
0114d602 | 13486 | const char *name; |
134d01f1 | 13487 | |
348e048f DE |
13488 | /* If the definition of this type lives in .debug_types, read that type. |
13489 | Don't follow DW_AT_specification though, that will take us back up | |
13490 | the chain and we want to go down. */ | |
45e58e77 | 13491 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13492 | if (attr) |
13493 | { | |
ac9ec31b | 13494 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13495 | |
ac9ec31b | 13496 | /* The type's CU may not be the same as CU. |
02142a6c | 13497 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13498 | return set_die_type (die, type, cu); |
13499 | } | |
13500 | ||
c906108c SS |
13501 | type = alloc_type (objfile); |
13502 | ||
13503 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 13504 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 13505 | if (name != NULL) |
7d455152 | 13506 | TYPE_TAG_NAME (type) = name; |
c906108c | 13507 | |
0626fc76 TT |
13508 | attr = dwarf2_attr (die, DW_AT_type, cu); |
13509 | if (attr != NULL) | |
13510 | { | |
13511 | struct type *underlying_type = die_type (die, cu); | |
13512 | ||
13513 | TYPE_TARGET_TYPE (type) = underlying_type; | |
13514 | } | |
13515 | ||
e142c38c | 13516 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13517 | if (attr) |
13518 | { | |
13519 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13520 | } | |
13521 | else | |
13522 | { | |
13523 | TYPE_LENGTH (type) = 0; | |
13524 | } | |
13525 | ||
137033e9 JB |
13526 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
13527 | declared as private in the package spec, and then defined only | |
13528 | inside the package body. Such types are known as Taft Amendment | |
13529 | Types. When another package uses such a type, an incomplete DIE | |
13530 | may be generated by the compiler. */ | |
02eb380e | 13531 | if (die_is_declaration (die, cu)) |
876cecd0 | 13532 | TYPE_STUB (type) = 1; |
02eb380e | 13533 | |
0626fc76 TT |
13534 | /* Finish the creation of this type by using the enum's children. |
13535 | We must call this even when the underlying type has been provided | |
13536 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
13537 | update_enumeration_type_from_children (die, type, cu); |
13538 | ||
0626fc76 TT |
13539 | /* If this type has an underlying type that is not a stub, then we |
13540 | may use its attributes. We always use the "unsigned" attribute | |
13541 | in this situation, because ordinarily we guess whether the type | |
13542 | is unsigned -- but the guess can be wrong and the underlying type | |
13543 | can tell us the reality. However, we defer to a local size | |
13544 | attribute if one exists, because this lets the compiler override | |
13545 | the underlying type if needed. */ | |
13546 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
13547 | { | |
13548 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
13549 | if (TYPE_LENGTH (type) == 0) | |
13550 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
13551 | } | |
13552 | ||
3d567982 TT |
13553 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
13554 | ||
f792889a | 13555 | return set_die_type (die, type, cu); |
134d01f1 DJ |
13556 | } |
13557 | ||
13558 | /* Given a pointer to a die which begins an enumeration, process all | |
13559 | the dies that define the members of the enumeration, and create the | |
13560 | symbol for the enumeration type. | |
13561 | ||
13562 | NOTE: We reverse the order of the element list. */ | |
13563 | ||
13564 | static void | |
13565 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13566 | { | |
f792889a | 13567 | struct type *this_type; |
134d01f1 | 13568 | |
f792889a DJ |
13569 | this_type = get_die_type (die, cu); |
13570 | if (this_type == NULL) | |
13571 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 13572 | |
639d11d3 | 13573 | if (die->child != NULL) |
c906108c | 13574 | { |
9dc481d3 DE |
13575 | struct die_info *child_die; |
13576 | struct symbol *sym; | |
13577 | struct field *fields = NULL; | |
13578 | int num_fields = 0; | |
15d034d0 | 13579 | const char *name; |
9dc481d3 | 13580 | |
639d11d3 | 13581 | child_die = die->child; |
c906108c SS |
13582 | while (child_die && child_die->tag) |
13583 | { | |
13584 | if (child_die->tag != DW_TAG_enumerator) | |
13585 | { | |
e7c27a73 | 13586 | process_die (child_die, cu); |
c906108c SS |
13587 | } |
13588 | else | |
13589 | { | |
39cbfefa DJ |
13590 | name = dwarf2_name (child_die, cu); |
13591 | if (name) | |
c906108c | 13592 | { |
f792889a | 13593 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
13594 | |
13595 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13596 | { | |
13597 | fields = (struct field *) | |
13598 | xrealloc (fields, | |
13599 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13600 | * sizeof (struct field)); |
c906108c SS |
13601 | } |
13602 | ||
3567439c | 13603 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 13604 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 13605 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
13606 | FIELD_BITSIZE (fields[num_fields]) = 0; |
13607 | ||
13608 | num_fields++; | |
13609 | } | |
13610 | } | |
13611 | ||
13612 | child_die = sibling_die (child_die); | |
13613 | } | |
13614 | ||
13615 | if (num_fields) | |
13616 | { | |
f792889a DJ |
13617 | TYPE_NFIELDS (this_type) = num_fields; |
13618 | TYPE_FIELDS (this_type) = (struct field *) | |
13619 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
13620 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 13621 | sizeof (struct field) * num_fields); |
b8c9b27d | 13622 | xfree (fields); |
c906108c | 13623 | } |
c906108c | 13624 | } |
134d01f1 | 13625 | |
6c83ed52 TT |
13626 | /* If we are reading an enum from a .debug_types unit, and the enum |
13627 | is a declaration, and the enum is not the signatured type in the | |
13628 | unit, then we do not want to add a symbol for it. Adding a | |
13629 | symbol would in some cases obscure the true definition of the | |
13630 | enum, giving users an incomplete type when the definition is | |
13631 | actually available. Note that we do not want to do this for all | |
13632 | enums which are just declarations, because C++0x allows forward | |
13633 | enum declarations. */ | |
3019eac3 | 13634 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
13635 | && die_is_declaration (die, cu)) |
13636 | { | |
52dc124a | 13637 | struct signatured_type *sig_type; |
6c83ed52 | 13638 | |
c0f78cd4 | 13639 | sig_type = (struct signatured_type *) cu->per_cu; |
3019eac3 DE |
13640 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
13641 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
13642 | return; |
13643 | } | |
13644 | ||
f792889a | 13645 | new_symbol (die, this_type, cu); |
c906108c SS |
13646 | } |
13647 | ||
13648 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
13649 | the DIE's type field. For now, this only handles one dimensional | |
13650 | arrays. */ | |
13651 | ||
f792889a | 13652 | static struct type * |
e7c27a73 | 13653 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13654 | { |
e7c27a73 | 13655 | struct objfile *objfile = cu->objfile; |
c906108c | 13656 | struct die_info *child_die; |
7e314c57 | 13657 | struct type *type; |
c906108c SS |
13658 | struct type *element_type, *range_type, *index_type; |
13659 | struct type **range_types = NULL; | |
13660 | struct attribute *attr; | |
13661 | int ndim = 0; | |
13662 | struct cleanup *back_to; | |
15d034d0 | 13663 | const char *name; |
dc53a7ad | 13664 | unsigned int bit_stride = 0; |
c906108c | 13665 | |
e7c27a73 | 13666 | element_type = die_type (die, cu); |
c906108c | 13667 | |
7e314c57 JK |
13668 | /* The die_type call above may have already set the type for this DIE. */ |
13669 | type = get_die_type (die, cu); | |
13670 | if (type) | |
13671 | return type; | |
13672 | ||
dc53a7ad JB |
13673 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
13674 | if (attr != NULL) | |
13675 | bit_stride = DW_UNSND (attr) * 8; | |
13676 | ||
13677 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
13678 | if (attr != NULL) | |
13679 | bit_stride = DW_UNSND (attr); | |
13680 | ||
c906108c SS |
13681 | /* Irix 6.2 native cc creates array types without children for |
13682 | arrays with unspecified length. */ | |
639d11d3 | 13683 | if (die->child == NULL) |
c906108c | 13684 | { |
46bf5051 | 13685 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 13686 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad JB |
13687 | type = create_array_type_with_stride (NULL, element_type, range_type, |
13688 | bit_stride); | |
f792889a | 13689 | return set_die_type (die, type, cu); |
c906108c SS |
13690 | } |
13691 | ||
13692 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 13693 | child_die = die->child; |
c906108c SS |
13694 | while (child_die && child_die->tag) |
13695 | { | |
13696 | if (child_die->tag == DW_TAG_subrange_type) | |
13697 | { | |
f792889a | 13698 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 13699 | |
f792889a | 13700 | if (child_type != NULL) |
a02abb62 | 13701 | { |
0963b4bd MS |
13702 | /* The range type was succesfully read. Save it for the |
13703 | array type creation. */ | |
a02abb62 JB |
13704 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
13705 | { | |
13706 | range_types = (struct type **) | |
13707 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
13708 | * sizeof (struct type *)); | |
13709 | if (ndim == 0) | |
13710 | make_cleanup (free_current_contents, &range_types); | |
13711 | } | |
f792889a | 13712 | range_types[ndim++] = child_type; |
a02abb62 | 13713 | } |
c906108c SS |
13714 | } |
13715 | child_die = sibling_die (child_die); | |
13716 | } | |
13717 | ||
13718 | /* Dwarf2 dimensions are output from left to right, create the | |
13719 | necessary array types in backwards order. */ | |
7ca2d3a3 | 13720 | |
c906108c | 13721 | type = element_type; |
7ca2d3a3 DL |
13722 | |
13723 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
13724 | { | |
13725 | int i = 0; | |
9a619af0 | 13726 | |
7ca2d3a3 | 13727 | while (i < ndim) |
dc53a7ad JB |
13728 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
13729 | bit_stride); | |
7ca2d3a3 DL |
13730 | } |
13731 | else | |
13732 | { | |
13733 | while (ndim-- > 0) | |
dc53a7ad JB |
13734 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
13735 | bit_stride); | |
7ca2d3a3 | 13736 | } |
c906108c | 13737 | |
f5f8a009 EZ |
13738 | /* Understand Dwarf2 support for vector types (like they occur on |
13739 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
13740 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
13741 | custom vendor extension. The main difference between a regular | |
13742 | array and the vector variant is that vectors are passed by value | |
13743 | to functions. */ | |
e142c38c | 13744 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 13745 | if (attr) |
ea37ba09 | 13746 | make_vector_type (type); |
f5f8a009 | 13747 | |
dbc98a8b KW |
13748 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
13749 | implementation may choose to implement triple vectors using this | |
13750 | attribute. */ | |
13751 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
13752 | if (attr) | |
13753 | { | |
13754 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
13755 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13756 | else | |
3e43a32a MS |
13757 | complaint (&symfile_complaints, |
13758 | _("DW_AT_byte_size for array type smaller " | |
13759 | "than the total size of elements")); | |
dbc98a8b KW |
13760 | } |
13761 | ||
39cbfefa DJ |
13762 | name = dwarf2_name (die, cu); |
13763 | if (name) | |
13764 | TYPE_NAME (type) = name; | |
6e70227d | 13765 | |
0963b4bd | 13766 | /* Install the type in the die. */ |
7e314c57 JK |
13767 | set_die_type (die, type, cu); |
13768 | ||
13769 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
13770 | set_descriptive_type (type, die, cu); |
13771 | ||
c906108c SS |
13772 | do_cleanups (back_to); |
13773 | ||
7e314c57 | 13774 | return type; |
c906108c SS |
13775 | } |
13776 | ||
7ca2d3a3 | 13777 | static enum dwarf_array_dim_ordering |
6e70227d | 13778 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
13779 | { |
13780 | struct attribute *attr; | |
13781 | ||
13782 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
13783 | ||
13784 | if (attr) return DW_SND (attr); | |
13785 | ||
0963b4bd MS |
13786 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
13787 | opposite order to the dwarf2 specification, but data is still | |
13788 | laid out as per normal fortran. | |
7ca2d3a3 | 13789 | |
0963b4bd MS |
13790 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
13791 | version checking. */ | |
7ca2d3a3 | 13792 | |
905e0470 PM |
13793 | if (cu->language == language_fortran |
13794 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
13795 | { |
13796 | return DW_ORD_row_major; | |
13797 | } | |
13798 | ||
6e70227d | 13799 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
13800 | { |
13801 | case array_column_major: | |
13802 | return DW_ORD_col_major; | |
13803 | case array_row_major: | |
13804 | default: | |
13805 | return DW_ORD_row_major; | |
13806 | }; | |
13807 | } | |
13808 | ||
72019c9c | 13809 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 13810 | the DIE's type field. */ |
72019c9c | 13811 | |
f792889a | 13812 | static struct type * |
72019c9c GM |
13813 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
13814 | { | |
7e314c57 JK |
13815 | struct type *domain_type, *set_type; |
13816 | struct attribute *attr; | |
f792889a | 13817 | |
7e314c57 JK |
13818 | domain_type = die_type (die, cu); |
13819 | ||
13820 | /* The die_type call above may have already set the type for this DIE. */ | |
13821 | set_type = get_die_type (die, cu); | |
13822 | if (set_type) | |
13823 | return set_type; | |
13824 | ||
13825 | set_type = create_set_type (NULL, domain_type); | |
13826 | ||
13827 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
13828 | if (attr) |
13829 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 13830 | |
f792889a | 13831 | return set_die_type (die, set_type, cu); |
72019c9c | 13832 | } |
7ca2d3a3 | 13833 | |
0971de02 TT |
13834 | /* A helper for read_common_block that creates a locexpr baton. |
13835 | SYM is the symbol which we are marking as computed. | |
13836 | COMMON_DIE is the DIE for the common block. | |
13837 | COMMON_LOC is the location expression attribute for the common | |
13838 | block itself. | |
13839 | MEMBER_LOC is the location expression attribute for the particular | |
13840 | member of the common block that we are processing. | |
13841 | CU is the CU from which the above come. */ | |
13842 | ||
13843 | static void | |
13844 | mark_common_block_symbol_computed (struct symbol *sym, | |
13845 | struct die_info *common_die, | |
13846 | struct attribute *common_loc, | |
13847 | struct attribute *member_loc, | |
13848 | struct dwarf2_cu *cu) | |
13849 | { | |
13850 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13851 | struct dwarf2_locexpr_baton *baton; | |
13852 | gdb_byte *ptr; | |
13853 | unsigned int cu_off; | |
13854 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
13855 | LONGEST offset = 0; | |
13856 | ||
13857 | gdb_assert (common_loc && member_loc); | |
13858 | gdb_assert (attr_form_is_block (common_loc)); | |
13859 | gdb_assert (attr_form_is_block (member_loc) | |
13860 | || attr_form_is_constant (member_loc)); | |
13861 | ||
13862 | baton = obstack_alloc (&objfile->objfile_obstack, | |
13863 | sizeof (struct dwarf2_locexpr_baton)); | |
13864 | baton->per_cu = cu->per_cu; | |
13865 | gdb_assert (baton->per_cu); | |
13866 | ||
13867 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
13868 | ||
13869 | if (attr_form_is_constant (member_loc)) | |
13870 | { | |
13871 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
13872 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
13873 | } | |
13874 | else | |
13875 | baton->size += DW_BLOCK (member_loc)->size; | |
13876 | ||
13877 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
13878 | baton->data = ptr; | |
13879 | ||
13880 | *ptr++ = DW_OP_call4; | |
13881 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
13882 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
13883 | ptr += 4; | |
13884 | ||
13885 | if (attr_form_is_constant (member_loc)) | |
13886 | { | |
13887 | *ptr++ = DW_OP_addr; | |
13888 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
13889 | ptr += cu->header.addr_size; | |
13890 | } | |
13891 | else | |
13892 | { | |
13893 | /* We have to copy the data here, because DW_OP_call4 will only | |
13894 | use a DW_AT_location attribute. */ | |
13895 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
13896 | ptr += DW_BLOCK (member_loc)->size; | |
13897 | } | |
13898 | ||
13899 | *ptr++ = DW_OP_plus; | |
13900 | gdb_assert (ptr - baton->data == baton->size); | |
13901 | ||
0971de02 | 13902 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 13903 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
13904 | } |
13905 | ||
4357ac6c TT |
13906 | /* Create appropriate locally-scoped variables for all the |
13907 | DW_TAG_common_block entries. Also create a struct common_block | |
13908 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
13909 | is used to sepate the common blocks name namespace from regular | |
13910 | variable names. */ | |
c906108c SS |
13911 | |
13912 | static void | |
e7c27a73 | 13913 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13914 | { |
0971de02 TT |
13915 | struct attribute *attr; |
13916 | ||
13917 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13918 | if (attr) | |
13919 | { | |
13920 | /* Support the .debug_loc offsets. */ | |
13921 | if (attr_form_is_block (attr)) | |
13922 | { | |
13923 | /* Ok. */ | |
13924 | } | |
13925 | else if (attr_form_is_section_offset (attr)) | |
13926 | { | |
13927 | dwarf2_complex_location_expr_complaint (); | |
13928 | attr = NULL; | |
13929 | } | |
13930 | else | |
13931 | { | |
13932 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
13933 | "common block member"); | |
13934 | attr = NULL; | |
13935 | } | |
13936 | } | |
13937 | ||
639d11d3 | 13938 | if (die->child != NULL) |
c906108c | 13939 | { |
4357ac6c TT |
13940 | struct objfile *objfile = cu->objfile; |
13941 | struct die_info *child_die; | |
13942 | size_t n_entries = 0, size; | |
13943 | struct common_block *common_block; | |
13944 | struct symbol *sym; | |
74ac6d43 | 13945 | |
4357ac6c TT |
13946 | for (child_die = die->child; |
13947 | child_die && child_die->tag; | |
13948 | child_die = sibling_die (child_die)) | |
13949 | ++n_entries; | |
13950 | ||
13951 | size = (sizeof (struct common_block) | |
13952 | + (n_entries - 1) * sizeof (struct symbol *)); | |
13953 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
13954 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
13955 | common_block->n_entries = 0; | |
13956 | ||
13957 | for (child_die = die->child; | |
13958 | child_die && child_die->tag; | |
13959 | child_die = sibling_die (child_die)) | |
13960 | { | |
13961 | /* Create the symbol in the DW_TAG_common_block block in the current | |
13962 | symbol scope. */ | |
e7c27a73 | 13963 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
13964 | if (sym != NULL) |
13965 | { | |
13966 | struct attribute *member_loc; | |
13967 | ||
13968 | common_block->contents[common_block->n_entries++] = sym; | |
13969 | ||
13970 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
13971 | cu); | |
13972 | if (member_loc) | |
13973 | { | |
13974 | /* GDB has handled this for a long time, but it is | |
13975 | not specified by DWARF. It seems to have been | |
13976 | emitted by gfortran at least as recently as: | |
13977 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
13978 | complaint (&symfile_complaints, | |
13979 | _("Variable in common block has " | |
13980 | "DW_AT_data_member_location " | |
13981 | "- DIE at 0x%x [in module %s]"), | |
4262abfb JK |
13982 | child_die->offset.sect_off, |
13983 | objfile_name (cu->objfile)); | |
0971de02 TT |
13984 | |
13985 | if (attr_form_is_section_offset (member_loc)) | |
13986 | dwarf2_complex_location_expr_complaint (); | |
13987 | else if (attr_form_is_constant (member_loc) | |
13988 | || attr_form_is_block (member_loc)) | |
13989 | { | |
13990 | if (attr) | |
13991 | mark_common_block_symbol_computed (sym, die, attr, | |
13992 | member_loc, cu); | |
13993 | } | |
13994 | else | |
13995 | dwarf2_complex_location_expr_complaint (); | |
13996 | } | |
13997 | } | |
c906108c | 13998 | } |
4357ac6c TT |
13999 | |
14000 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
14001 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
14002 | } |
14003 | } | |
14004 | ||
0114d602 | 14005 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 14006 | |
0114d602 DJ |
14007 | static struct type * |
14008 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 14009 | { |
e7c27a73 | 14010 | struct objfile *objfile = cu->objfile; |
0114d602 | 14011 | const char *previous_prefix, *name; |
9219021c | 14012 | int is_anonymous; |
0114d602 DJ |
14013 | struct type *type; |
14014 | ||
14015 | /* For extensions, reuse the type of the original namespace. */ | |
14016 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
14017 | { | |
14018 | struct die_info *ext_die; | |
14019 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 14020 | |
0114d602 DJ |
14021 | ext_die = dwarf2_extension (die, &ext_cu); |
14022 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
14023 | |
14024 | /* EXT_CU may not be the same as CU. | |
02142a6c | 14025 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
14026 | return set_die_type (die, type, cu); |
14027 | } | |
9219021c | 14028 | |
e142c38c | 14029 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
14030 | |
14031 | /* Now build the name of the current namespace. */ | |
14032 | ||
0114d602 DJ |
14033 | previous_prefix = determine_prefix (die, cu); |
14034 | if (previous_prefix[0] != '\0') | |
14035 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 14036 | previous_prefix, name, 0, cu); |
0114d602 DJ |
14037 | |
14038 | /* Create the type. */ | |
14039 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
14040 | objfile); | |
abee88f2 | 14041 | TYPE_NAME (type) = name; |
0114d602 DJ |
14042 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
14043 | ||
60531b24 | 14044 | return set_die_type (die, type, cu); |
0114d602 DJ |
14045 | } |
14046 | ||
14047 | /* Read a C++ namespace. */ | |
14048 | ||
14049 | static void | |
14050 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
14051 | { | |
14052 | struct objfile *objfile = cu->objfile; | |
0114d602 | 14053 | int is_anonymous; |
9219021c | 14054 | |
5c4e30ca DC |
14055 | /* Add a symbol associated to this if we haven't seen the namespace |
14056 | before. Also, add a using directive if it's an anonymous | |
14057 | namespace. */ | |
9219021c | 14058 | |
f2f0e013 | 14059 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
14060 | { |
14061 | struct type *type; | |
14062 | ||
0114d602 | 14063 | type = read_type_die (die, cu); |
e7c27a73 | 14064 | new_symbol (die, type, cu); |
5c4e30ca | 14065 | |
e8e80198 | 14066 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 14067 | if (is_anonymous) |
0114d602 DJ |
14068 | { |
14069 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 14070 | |
c0cc3a76 | 14071 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
12aaed36 | 14072 | NULL, NULL, 0, &objfile->objfile_obstack); |
0114d602 | 14073 | } |
5c4e30ca | 14074 | } |
9219021c | 14075 | |
639d11d3 | 14076 | if (die->child != NULL) |
d9fa45fe | 14077 | { |
639d11d3 | 14078 | struct die_info *child_die = die->child; |
6e70227d | 14079 | |
d9fa45fe DC |
14080 | while (child_die && child_die->tag) |
14081 | { | |
e7c27a73 | 14082 | process_die (child_die, cu); |
d9fa45fe DC |
14083 | child_die = sibling_die (child_die); |
14084 | } | |
14085 | } | |
38d518c9 EZ |
14086 | } |
14087 | ||
f55ee35c JK |
14088 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
14089 | imported module. Still we need that type as local Fortran "use ... only" | |
14090 | declaration imports depend on the created type in determine_prefix. */ | |
14091 | ||
14092 | static struct type * | |
14093 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
14094 | { | |
14095 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 14096 | const char *module_name; |
f55ee35c JK |
14097 | struct type *type; |
14098 | ||
14099 | module_name = dwarf2_name (die, cu); | |
14100 | if (!module_name) | |
3e43a32a MS |
14101 | complaint (&symfile_complaints, |
14102 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 14103 | die->offset.sect_off); |
f55ee35c JK |
14104 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
14105 | ||
14106 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
14107 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
14108 | ||
14109 | return set_die_type (die, type, cu); | |
14110 | } | |
14111 | ||
5d7cb8df JK |
14112 | /* Read a Fortran module. */ |
14113 | ||
14114 | static void | |
14115 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
14116 | { | |
14117 | struct die_info *child_die = die->child; | |
530e8392 KB |
14118 | struct type *type; |
14119 | ||
14120 | type = read_type_die (die, cu); | |
14121 | new_symbol (die, type, cu); | |
5d7cb8df | 14122 | |
5d7cb8df JK |
14123 | while (child_die && child_die->tag) |
14124 | { | |
14125 | process_die (child_die, cu); | |
14126 | child_die = sibling_die (child_die); | |
14127 | } | |
14128 | } | |
14129 | ||
38d518c9 EZ |
14130 | /* Return the name of the namespace represented by DIE. Set |
14131 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
14132 | namespace. */ | |
14133 | ||
14134 | static const char * | |
e142c38c | 14135 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
14136 | { |
14137 | struct die_info *current_die; | |
14138 | const char *name = NULL; | |
14139 | ||
14140 | /* Loop through the extensions until we find a name. */ | |
14141 | ||
14142 | for (current_die = die; | |
14143 | current_die != NULL; | |
f2f0e013 | 14144 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 14145 | { |
96553a0c DE |
14146 | /* We don't use dwarf2_name here so that we can detect the absence |
14147 | of a name -> anonymous namespace. */ | |
14148 | struct attribute *attr = dwarf2_attr (die, DW_AT_name, cu); | |
14149 | ||
14150 | if (attr != NULL) | |
14151 | name = DW_STRING (attr); | |
38d518c9 EZ |
14152 | if (name != NULL) |
14153 | break; | |
14154 | } | |
14155 | ||
14156 | /* Is it an anonymous namespace? */ | |
14157 | ||
14158 | *is_anonymous = (name == NULL); | |
14159 | if (*is_anonymous) | |
2b1dbab0 | 14160 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
14161 | |
14162 | return name; | |
d9fa45fe DC |
14163 | } |
14164 | ||
c906108c SS |
14165 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
14166 | the user defined type vector. */ | |
14167 | ||
f792889a | 14168 | static struct type * |
e7c27a73 | 14169 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14170 | { |
5e2b427d | 14171 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 14172 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 14173 | struct type *type; |
8b2dbe47 KB |
14174 | struct attribute *attr_byte_size; |
14175 | struct attribute *attr_address_class; | |
14176 | int byte_size, addr_class; | |
7e314c57 JK |
14177 | struct type *target_type; |
14178 | ||
14179 | target_type = die_type (die, cu); | |
c906108c | 14180 | |
7e314c57 JK |
14181 | /* The die_type call above may have already set the type for this DIE. */ |
14182 | type = get_die_type (die, cu); | |
14183 | if (type) | |
14184 | return type; | |
14185 | ||
14186 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 14187 | |
e142c38c | 14188 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
14189 | if (attr_byte_size) |
14190 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 14191 | else |
8b2dbe47 KB |
14192 | byte_size = cu_header->addr_size; |
14193 | ||
e142c38c | 14194 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
14195 | if (attr_address_class) |
14196 | addr_class = DW_UNSND (attr_address_class); | |
14197 | else | |
14198 | addr_class = DW_ADDR_none; | |
14199 | ||
14200 | /* If the pointer size or address class is different than the | |
14201 | default, create a type variant marked as such and set the | |
14202 | length accordingly. */ | |
14203 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 14204 | { |
5e2b427d | 14205 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
14206 | { |
14207 | int type_flags; | |
14208 | ||
849957d9 | 14209 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 14210 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
14211 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
14212 | == 0); | |
8b2dbe47 KB |
14213 | type = make_type_with_address_space (type, type_flags); |
14214 | } | |
14215 | else if (TYPE_LENGTH (type) != byte_size) | |
14216 | { | |
3e43a32a MS |
14217 | complaint (&symfile_complaints, |
14218 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 14219 | } |
6e70227d | 14220 | else |
9a619af0 MS |
14221 | { |
14222 | /* Should we also complain about unhandled address classes? */ | |
14223 | } | |
c906108c | 14224 | } |
8b2dbe47 KB |
14225 | |
14226 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 14227 | return set_die_type (die, type, cu); |
c906108c SS |
14228 | } |
14229 | ||
14230 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
14231 | the user defined type vector. */ | |
14232 | ||
f792889a | 14233 | static struct type * |
e7c27a73 | 14234 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
14235 | { |
14236 | struct type *type; | |
14237 | struct type *to_type; | |
14238 | struct type *domain; | |
14239 | ||
e7c27a73 DJ |
14240 | to_type = die_type (die, cu); |
14241 | domain = die_containing_type (die, cu); | |
0d5de010 | 14242 | |
7e314c57 JK |
14243 | /* The calls above may have already set the type for this DIE. */ |
14244 | type = get_die_type (die, cu); | |
14245 | if (type) | |
14246 | return type; | |
14247 | ||
0d5de010 DJ |
14248 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
14249 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
14250 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
14251 | { | |
14252 | struct type *new_type = alloc_type (cu->objfile); | |
14253 | ||
14254 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
14255 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
14256 | TYPE_VARARGS (to_type)); | |
14257 | type = lookup_methodptr_type (new_type); | |
14258 | } | |
0d5de010 DJ |
14259 | else |
14260 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 14261 | |
f792889a | 14262 | return set_die_type (die, type, cu); |
c906108c SS |
14263 | } |
14264 | ||
14265 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
14266 | the user defined type vector. */ | |
14267 | ||
f792889a | 14268 | static struct type * |
e7c27a73 | 14269 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14270 | { |
e7c27a73 | 14271 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 14272 | struct type *type, *target_type; |
c906108c SS |
14273 | struct attribute *attr; |
14274 | ||
7e314c57 JK |
14275 | target_type = die_type (die, cu); |
14276 | ||
14277 | /* The die_type call above may have already set the type for this DIE. */ | |
14278 | type = get_die_type (die, cu); | |
14279 | if (type) | |
14280 | return type; | |
14281 | ||
14282 | type = lookup_reference_type (target_type); | |
e142c38c | 14283 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14284 | if (attr) |
14285 | { | |
14286 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
14287 | } | |
14288 | else | |
14289 | { | |
107d2387 | 14290 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 14291 | } |
f792889a | 14292 | return set_die_type (die, type, cu); |
c906108c SS |
14293 | } |
14294 | ||
cf363f18 MW |
14295 | /* Add the given cv-qualifiers to the element type of the array. GCC |
14296 | outputs DWARF type qualifiers that apply to an array, not the | |
14297 | element type. But GDB relies on the array element type to carry | |
14298 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
14299 | specification. */ | |
14300 | ||
14301 | static struct type * | |
14302 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
14303 | struct type *base_type, int cnst, int voltl) | |
14304 | { | |
14305 | struct type *el_type, *inner_array; | |
14306 | ||
14307 | base_type = copy_type (base_type); | |
14308 | inner_array = base_type; | |
14309 | ||
14310 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
14311 | { | |
14312 | TYPE_TARGET_TYPE (inner_array) = | |
14313 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
14314 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
14315 | } | |
14316 | ||
14317 | el_type = TYPE_TARGET_TYPE (inner_array); | |
14318 | cnst |= TYPE_CONST (el_type); | |
14319 | voltl |= TYPE_VOLATILE (el_type); | |
14320 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
14321 | ||
14322 | return set_die_type (die, base_type, cu); | |
14323 | } | |
14324 | ||
f792889a | 14325 | static struct type * |
e7c27a73 | 14326 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14327 | { |
f792889a | 14328 | struct type *base_type, *cv_type; |
c906108c | 14329 | |
e7c27a73 | 14330 | base_type = die_type (die, cu); |
7e314c57 JK |
14331 | |
14332 | /* The die_type call above may have already set the type for this DIE. */ | |
14333 | cv_type = get_die_type (die, cu); | |
14334 | if (cv_type) | |
14335 | return cv_type; | |
14336 | ||
2f608a3a KW |
14337 | /* In case the const qualifier is applied to an array type, the element type |
14338 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
14339 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 14340 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 14341 | |
f792889a DJ |
14342 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
14343 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14344 | } |
14345 | ||
f792889a | 14346 | static struct type * |
e7c27a73 | 14347 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14348 | { |
f792889a | 14349 | struct type *base_type, *cv_type; |
c906108c | 14350 | |
e7c27a73 | 14351 | base_type = die_type (die, cu); |
7e314c57 JK |
14352 | |
14353 | /* The die_type call above may have already set the type for this DIE. */ | |
14354 | cv_type = get_die_type (die, cu); | |
14355 | if (cv_type) | |
14356 | return cv_type; | |
14357 | ||
cf363f18 MW |
14358 | /* In case the volatile qualifier is applied to an array type, the |
14359 | element type is so qualified, not the array type (section 6.7.3 | |
14360 | of C99). */ | |
14361 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
14362 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
14363 | ||
f792889a DJ |
14364 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
14365 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14366 | } |
14367 | ||
06d66ee9 TT |
14368 | /* Handle DW_TAG_restrict_type. */ |
14369 | ||
14370 | static struct type * | |
14371 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
14372 | { | |
14373 | struct type *base_type, *cv_type; | |
14374 | ||
14375 | base_type = die_type (die, cu); | |
14376 | ||
14377 | /* The die_type call above may have already set the type for this DIE. */ | |
14378 | cv_type = get_die_type (die, cu); | |
14379 | if (cv_type) | |
14380 | return cv_type; | |
14381 | ||
14382 | cv_type = make_restrict_type (base_type); | |
14383 | return set_die_type (die, cv_type, cu); | |
14384 | } | |
14385 | ||
a2c2acaf MW |
14386 | /* Handle DW_TAG_atomic_type. */ |
14387 | ||
14388 | static struct type * | |
14389 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
14390 | { | |
14391 | struct type *base_type, *cv_type; | |
14392 | ||
14393 | base_type = die_type (die, cu); | |
14394 | ||
14395 | /* The die_type call above may have already set the type for this DIE. */ | |
14396 | cv_type = get_die_type (die, cu); | |
14397 | if (cv_type) | |
14398 | return cv_type; | |
14399 | ||
14400 | cv_type = make_atomic_type (base_type); | |
14401 | return set_die_type (die, cv_type, cu); | |
14402 | } | |
14403 | ||
c906108c SS |
14404 | /* Extract all information from a DW_TAG_string_type DIE and add to |
14405 | the user defined type vector. It isn't really a user defined type, | |
14406 | but it behaves like one, with other DIE's using an AT_user_def_type | |
14407 | attribute to reference it. */ | |
14408 | ||
f792889a | 14409 | static struct type * |
e7c27a73 | 14410 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14411 | { |
e7c27a73 | 14412 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 14413 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14414 | struct type *type, *range_type, *index_type, *char_type; |
14415 | struct attribute *attr; | |
14416 | unsigned int length; | |
14417 | ||
e142c38c | 14418 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
14419 | if (attr) |
14420 | { | |
14421 | length = DW_UNSND (attr); | |
14422 | } | |
14423 | else | |
14424 | { | |
0963b4bd | 14425 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 14426 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
14427 | if (attr) |
14428 | { | |
14429 | length = DW_UNSND (attr); | |
14430 | } | |
14431 | else | |
14432 | { | |
14433 | length = 1; | |
14434 | } | |
c906108c | 14435 | } |
6ccb9162 | 14436 | |
46bf5051 | 14437 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 14438 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
14439 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
14440 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 14441 | |
f792889a | 14442 | return set_die_type (die, type, cu); |
c906108c SS |
14443 | } |
14444 | ||
4d804846 JB |
14445 | /* Assuming that DIE corresponds to a function, returns nonzero |
14446 | if the function is prototyped. */ | |
14447 | ||
14448 | static int | |
14449 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
14450 | { | |
14451 | struct attribute *attr; | |
14452 | ||
14453 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
14454 | if (attr && (DW_UNSND (attr) != 0)) | |
14455 | return 1; | |
14456 | ||
14457 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
14458 | is only meaninful for C, but the concept also extends to other | |
14459 | languages that allow unprototyped functions (Eg: Objective C). | |
14460 | For all other languages, assume that functions are always | |
14461 | prototyped. */ | |
14462 | if (cu->language != language_c | |
14463 | && cu->language != language_objc | |
14464 | && cu->language != language_opencl) | |
14465 | return 1; | |
14466 | ||
14467 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
14468 | prototyped and unprototyped functions; default to prototyped, | |
14469 | since that is more common in modern code (and RealView warns | |
14470 | about unprototyped functions). */ | |
14471 | if (producer_is_realview (cu->producer)) | |
14472 | return 1; | |
14473 | ||
14474 | return 0; | |
14475 | } | |
14476 | ||
c906108c SS |
14477 | /* Handle DIES due to C code like: |
14478 | ||
14479 | struct foo | |
c5aa993b JM |
14480 | { |
14481 | int (*funcp)(int a, long l); | |
14482 | int b; | |
14483 | }; | |
c906108c | 14484 | |
0963b4bd | 14485 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 14486 | |
f792889a | 14487 | static struct type * |
e7c27a73 | 14488 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14489 | { |
bb5ed363 | 14490 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
14491 | struct type *type; /* Type that this function returns. */ |
14492 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
14493 | struct attribute *attr; |
14494 | ||
e7c27a73 | 14495 | type = die_type (die, cu); |
7e314c57 JK |
14496 | |
14497 | /* The die_type call above may have already set the type for this DIE. */ | |
14498 | ftype = get_die_type (die, cu); | |
14499 | if (ftype) | |
14500 | return ftype; | |
14501 | ||
0c8b41f1 | 14502 | ftype = lookup_function_type (type); |
c906108c | 14503 | |
4d804846 | 14504 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 14505 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 14506 | |
c055b101 CV |
14507 | /* Store the calling convention in the type if it's available in |
14508 | the subroutine die. Otherwise set the calling convention to | |
14509 | the default value DW_CC_normal. */ | |
14510 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
14511 | if (attr) |
14512 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
14513 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
14514 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
14515 | else | |
14516 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 14517 | |
743649fd MW |
14518 | /* Record whether the function returns normally to its caller or not |
14519 | if the DWARF producer set that information. */ | |
14520 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
14521 | if (attr && (DW_UNSND (attr) != 0)) | |
14522 | TYPE_NO_RETURN (ftype) = 1; | |
14523 | ||
76c10ea2 GM |
14524 | /* We need to add the subroutine type to the die immediately so |
14525 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 14526 | declared as the same subroutine type. */ |
76c10ea2 | 14527 | set_die_type (die, ftype, cu); |
6e70227d | 14528 | |
639d11d3 | 14529 | if (die->child != NULL) |
c906108c | 14530 | { |
bb5ed363 | 14531 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 14532 | struct die_info *child_die; |
8072405b | 14533 | int nparams, iparams; |
c906108c SS |
14534 | |
14535 | /* Count the number of parameters. | |
14536 | FIXME: GDB currently ignores vararg functions, but knows about | |
14537 | vararg member functions. */ | |
8072405b | 14538 | nparams = 0; |
639d11d3 | 14539 | child_die = die->child; |
c906108c SS |
14540 | while (child_die && child_die->tag) |
14541 | { | |
14542 | if (child_die->tag == DW_TAG_formal_parameter) | |
14543 | nparams++; | |
14544 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 14545 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
14546 | child_die = sibling_die (child_die); |
14547 | } | |
14548 | ||
14549 | /* Allocate storage for parameters and fill them in. */ | |
14550 | TYPE_NFIELDS (ftype) = nparams; | |
14551 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 14552 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 14553 | |
8072405b JK |
14554 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
14555 | even if we error out during the parameters reading below. */ | |
14556 | for (iparams = 0; iparams < nparams; iparams++) | |
14557 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
14558 | ||
14559 | iparams = 0; | |
639d11d3 | 14560 | child_die = die->child; |
c906108c SS |
14561 | while (child_die && child_die->tag) |
14562 | { | |
14563 | if (child_die->tag == DW_TAG_formal_parameter) | |
14564 | { | |
3ce3b1ba PA |
14565 | struct type *arg_type; |
14566 | ||
14567 | /* DWARF version 2 has no clean way to discern C++ | |
14568 | static and non-static member functions. G++ helps | |
14569 | GDB by marking the first parameter for non-static | |
14570 | member functions (which is the this pointer) as | |
14571 | artificial. We pass this information to | |
14572 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
14573 | ||
14574 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
14575 | 4.5 does not yet generate. */ | |
e142c38c | 14576 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
14577 | if (attr) |
14578 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
14579 | else | |
418835cc KS |
14580 | { |
14581 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
14582 | ||
14583 | /* GCC/43521: In java, the formal parameter | |
14584 | "this" is sometimes not marked with DW_AT_artificial. */ | |
14585 | if (cu->language == language_java) | |
14586 | { | |
14587 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 14588 | |
418835cc KS |
14589 | if (name && !strcmp (name, "this")) |
14590 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
14591 | } | |
14592 | } | |
3ce3b1ba PA |
14593 | arg_type = die_type (child_die, cu); |
14594 | ||
14595 | /* RealView does not mark THIS as const, which the testsuite | |
14596 | expects. GCC marks THIS as const in method definitions, | |
14597 | but not in the class specifications (GCC PR 43053). */ | |
14598 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
14599 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
14600 | { | |
14601 | int is_this = 0; | |
14602 | struct dwarf2_cu *arg_cu = cu; | |
14603 | const char *name = dwarf2_name (child_die, cu); | |
14604 | ||
14605 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
14606 | if (attr) | |
14607 | { | |
14608 | /* If the compiler emits this, use it. */ | |
14609 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
14610 | is_this = 1; | |
14611 | } | |
14612 | else if (name && strcmp (name, "this") == 0) | |
14613 | /* Function definitions will have the argument names. */ | |
14614 | is_this = 1; | |
14615 | else if (name == NULL && iparams == 0) | |
14616 | /* Declarations may not have the names, so like | |
14617 | elsewhere in GDB, assume an artificial first | |
14618 | argument is "this". */ | |
14619 | is_this = 1; | |
14620 | ||
14621 | if (is_this) | |
14622 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
14623 | arg_type, 0); | |
14624 | } | |
14625 | ||
14626 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
14627 | iparams++; |
14628 | } | |
14629 | child_die = sibling_die (child_die); | |
14630 | } | |
14631 | } | |
14632 | ||
76c10ea2 | 14633 | return ftype; |
c906108c SS |
14634 | } |
14635 | ||
f792889a | 14636 | static struct type * |
e7c27a73 | 14637 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14638 | { |
e7c27a73 | 14639 | struct objfile *objfile = cu->objfile; |
0114d602 | 14640 | const char *name = NULL; |
3c8e0968 | 14641 | struct type *this_type, *target_type; |
c906108c | 14642 | |
94af9270 | 14643 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 14644 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 | 14645 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
abee88f2 | 14646 | TYPE_NAME (this_type) = name; |
f792889a | 14647 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
14648 | target_type = die_type (die, cu); |
14649 | if (target_type != this_type) | |
14650 | TYPE_TARGET_TYPE (this_type) = target_type; | |
14651 | else | |
14652 | { | |
14653 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
14654 | spec and cause infinite loops in GDB. */ | |
14655 | complaint (&symfile_complaints, | |
14656 | _("Self-referential DW_TAG_typedef " | |
14657 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14658 | die->offset.sect_off, objfile_name (objfile)); |
3c8e0968 DE |
14659 | TYPE_TARGET_TYPE (this_type) = NULL; |
14660 | } | |
f792889a | 14661 | return this_type; |
c906108c SS |
14662 | } |
14663 | ||
14664 | /* Find a representation of a given base type and install | |
14665 | it in the TYPE field of the die. */ | |
14666 | ||
f792889a | 14667 | static struct type * |
e7c27a73 | 14668 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14669 | { |
e7c27a73 | 14670 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14671 | struct type *type; |
14672 | struct attribute *attr; | |
14673 | int encoding = 0, size = 0; | |
15d034d0 | 14674 | const char *name; |
6ccb9162 UW |
14675 | enum type_code code = TYPE_CODE_INT; |
14676 | int type_flags = 0; | |
14677 | struct type *target_type = NULL; | |
c906108c | 14678 | |
e142c38c | 14679 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
14680 | if (attr) |
14681 | { | |
14682 | encoding = DW_UNSND (attr); | |
14683 | } | |
e142c38c | 14684 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14685 | if (attr) |
14686 | { | |
14687 | size = DW_UNSND (attr); | |
14688 | } | |
39cbfefa | 14689 | name = dwarf2_name (die, cu); |
6ccb9162 | 14690 | if (!name) |
c906108c | 14691 | { |
6ccb9162 UW |
14692 | complaint (&symfile_complaints, |
14693 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 14694 | } |
6ccb9162 UW |
14695 | |
14696 | switch (encoding) | |
c906108c | 14697 | { |
6ccb9162 UW |
14698 | case DW_ATE_address: |
14699 | /* Turn DW_ATE_address into a void * pointer. */ | |
14700 | code = TYPE_CODE_PTR; | |
14701 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14702 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
14703 | break; | |
14704 | case DW_ATE_boolean: | |
14705 | code = TYPE_CODE_BOOL; | |
14706 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14707 | break; | |
14708 | case DW_ATE_complex_float: | |
14709 | code = TYPE_CODE_COMPLEX; | |
14710 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
14711 | break; | |
14712 | case DW_ATE_decimal_float: | |
14713 | code = TYPE_CODE_DECFLOAT; | |
14714 | break; | |
14715 | case DW_ATE_float: | |
14716 | code = TYPE_CODE_FLT; | |
14717 | break; | |
14718 | case DW_ATE_signed: | |
14719 | break; | |
14720 | case DW_ATE_unsigned: | |
14721 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
14722 | if (cu->language == language_fortran |
14723 | && name | |
61012eef | 14724 | && startswith (name, "character(")) |
3b2b8fea | 14725 | code = TYPE_CODE_CHAR; |
6ccb9162 UW |
14726 | break; |
14727 | case DW_ATE_signed_char: | |
6e70227d | 14728 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14729 | || cu->language == language_pascal |
14730 | || cu->language == language_fortran) | |
6ccb9162 UW |
14731 | code = TYPE_CODE_CHAR; |
14732 | break; | |
14733 | case DW_ATE_unsigned_char: | |
868a0084 | 14734 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14735 | || cu->language == language_pascal |
14736 | || cu->language == language_fortran) | |
6ccb9162 UW |
14737 | code = TYPE_CODE_CHAR; |
14738 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14739 | break; | |
75079b2b TT |
14740 | case DW_ATE_UTF: |
14741 | /* We just treat this as an integer and then recognize the | |
14742 | type by name elsewhere. */ | |
14743 | break; | |
14744 | ||
6ccb9162 UW |
14745 | default: |
14746 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
14747 | dwarf_type_encoding_name (encoding)); | |
14748 | break; | |
c906108c | 14749 | } |
6ccb9162 | 14750 | |
0114d602 DJ |
14751 | type = init_type (code, size, type_flags, NULL, objfile); |
14752 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
14753 | TYPE_TARGET_TYPE (type) = target_type; |
14754 | ||
0114d602 | 14755 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 14756 | TYPE_NOSIGN (type) = 1; |
0114d602 | 14757 | |
f792889a | 14758 | return set_die_type (die, type, cu); |
c906108c SS |
14759 | } |
14760 | ||
80180f79 SA |
14761 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
14762 | resulting value of the attribute into struct bound_prop. | |
14763 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
14764 | ||
14765 | static int | |
14766 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
14767 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
14768 | { | |
14769 | struct dwarf2_property_baton *baton; | |
14770 | struct obstack *obstack = &cu->objfile->objfile_obstack; | |
14771 | ||
14772 | if (attr == NULL || prop == NULL) | |
14773 | return 0; | |
14774 | ||
14775 | if (attr_form_is_block (attr)) | |
14776 | { | |
14777 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14778 | baton->referenced_type = NULL; | |
14779 | baton->locexpr.per_cu = cu->per_cu; | |
14780 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
14781 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
14782 | prop->data.baton = baton; | |
14783 | prop->kind = PROP_LOCEXPR; | |
14784 | gdb_assert (prop->data.baton != NULL); | |
14785 | } | |
14786 | else if (attr_form_is_ref (attr)) | |
14787 | { | |
14788 | struct dwarf2_cu *target_cu = cu; | |
14789 | struct die_info *target_die; | |
14790 | struct attribute *target_attr; | |
14791 | ||
14792 | target_die = follow_die_ref (die, attr, &target_cu); | |
14793 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
14794 | if (target_attr == NULL) |
14795 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
14796 | target_cu); | |
80180f79 SA |
14797 | if (target_attr == NULL) |
14798 | return 0; | |
14799 | ||
df25ebbd | 14800 | switch (target_attr->name) |
80180f79 | 14801 | { |
df25ebbd JB |
14802 | case DW_AT_location: |
14803 | if (attr_form_is_section_offset (target_attr)) | |
14804 | { | |
14805 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14806 | baton->referenced_type = die_type (target_die, target_cu); | |
14807 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
14808 | prop->data.baton = baton; | |
14809 | prop->kind = PROP_LOCLIST; | |
14810 | gdb_assert (prop->data.baton != NULL); | |
14811 | } | |
14812 | else if (attr_form_is_block (target_attr)) | |
14813 | { | |
14814 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14815 | baton->referenced_type = die_type (target_die, target_cu); | |
14816 | baton->locexpr.per_cu = cu->per_cu; | |
14817 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
14818 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
14819 | prop->data.baton = baton; | |
14820 | prop->kind = PROP_LOCEXPR; | |
14821 | gdb_assert (prop->data.baton != NULL); | |
14822 | } | |
14823 | else | |
14824 | { | |
14825 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
14826 | "dynamic property"); | |
14827 | return 0; | |
14828 | } | |
14829 | break; | |
14830 | case DW_AT_data_member_location: | |
14831 | { | |
14832 | LONGEST offset; | |
14833 | ||
14834 | if (!handle_data_member_location (target_die, target_cu, | |
14835 | &offset)) | |
14836 | return 0; | |
14837 | ||
14838 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14839 | baton->referenced_type = get_die_type (target_die->parent, | |
14840 | target_cu); | |
14841 | baton->offset_info.offset = offset; | |
14842 | baton->offset_info.type = die_type (target_die, target_cu); | |
14843 | prop->data.baton = baton; | |
14844 | prop->kind = PROP_ADDR_OFFSET; | |
14845 | break; | |
14846 | } | |
80180f79 SA |
14847 | } |
14848 | } | |
14849 | else if (attr_form_is_constant (attr)) | |
14850 | { | |
14851 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
14852 | prop->kind = PROP_CONST; | |
14853 | } | |
14854 | else | |
14855 | { | |
14856 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
14857 | dwarf2_name (die, cu)); | |
14858 | return 0; | |
14859 | } | |
14860 | ||
14861 | return 1; | |
14862 | } | |
14863 | ||
a02abb62 JB |
14864 | /* Read the given DW_AT_subrange DIE. */ |
14865 | ||
f792889a | 14866 | static struct type * |
a02abb62 JB |
14867 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
14868 | { | |
4c9ad8c2 | 14869 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
14870 | struct type *range_type; |
14871 | struct attribute *attr; | |
729efb13 | 14872 | struct dynamic_prop low, high; |
4fae6e18 | 14873 | int low_default_is_valid; |
c451ebe5 | 14874 | int high_bound_is_count = 0; |
15d034d0 | 14875 | const char *name; |
43bbcdc2 | 14876 | LONGEST negative_mask; |
e77813c8 | 14877 | |
4c9ad8c2 TT |
14878 | orig_base_type = die_type (die, cu); |
14879 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
14880 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
14881 | creating the range type, but we use the result of check_typedef | |
14882 | when examining properties of the type. */ | |
14883 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 14884 | |
7e314c57 JK |
14885 | /* The die_type call above may have already set the type for this DIE. */ |
14886 | range_type = get_die_type (die, cu); | |
14887 | if (range_type) | |
14888 | return range_type; | |
14889 | ||
729efb13 SA |
14890 | low.kind = PROP_CONST; |
14891 | high.kind = PROP_CONST; | |
14892 | high.data.const_val = 0; | |
14893 | ||
4fae6e18 JK |
14894 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
14895 | omitting DW_AT_lower_bound. */ | |
14896 | switch (cu->language) | |
6e70227d | 14897 | { |
4fae6e18 JK |
14898 | case language_c: |
14899 | case language_cplus: | |
729efb13 | 14900 | low.data.const_val = 0; |
4fae6e18 JK |
14901 | low_default_is_valid = 1; |
14902 | break; | |
14903 | case language_fortran: | |
729efb13 | 14904 | low.data.const_val = 1; |
4fae6e18 JK |
14905 | low_default_is_valid = 1; |
14906 | break; | |
14907 | case language_d: | |
14908 | case language_java: | |
14909 | case language_objc: | |
729efb13 | 14910 | low.data.const_val = 0; |
4fae6e18 JK |
14911 | low_default_is_valid = (cu->header.version >= 4); |
14912 | break; | |
14913 | case language_ada: | |
14914 | case language_m2: | |
14915 | case language_pascal: | |
729efb13 | 14916 | low.data.const_val = 1; |
4fae6e18 JK |
14917 | low_default_is_valid = (cu->header.version >= 4); |
14918 | break; | |
14919 | default: | |
729efb13 | 14920 | low.data.const_val = 0; |
4fae6e18 JK |
14921 | low_default_is_valid = 0; |
14922 | break; | |
a02abb62 JB |
14923 | } |
14924 | ||
e142c38c | 14925 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 14926 | if (attr) |
11c1ba78 | 14927 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
14928 | else if (!low_default_is_valid) |
14929 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
14930 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14931 | die->offset.sect_off, objfile_name (cu->objfile)); |
a02abb62 | 14932 | |
e142c38c | 14933 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 14934 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
14935 | { |
14936 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 14937 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 14938 | { |
c451ebe5 SA |
14939 | /* If bounds are constant do the final calculation here. */ |
14940 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
14941 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
14942 | else | |
14943 | high_bound_is_count = 1; | |
c2ff108b | 14944 | } |
e77813c8 PM |
14945 | } |
14946 | ||
14947 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
14948 | without specifying a base type. | |
14949 | In that case, the base type must be set to the type of | |
14950 | the lower bound, upper bound or count, in that order, if any of these | |
14951 | three attributes references an object that has a type. | |
14952 | If no base type is found, the Dwarf-2 specifications say that | |
14953 | a signed integer type of size equal to the size of an address should | |
14954 | be used. | |
14955 | For the following C code: `extern char gdb_int [];' | |
14956 | GCC produces an empty range DIE. | |
14957 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 14958 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
14959 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
14960 | { | |
14961 | struct objfile *objfile = cu->objfile; | |
14962 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
14963 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
14964 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
14965 | ||
14966 | /* Test "int", "long int", and "long long int" objfile types, | |
14967 | and select the first one having a size above or equal to the | |
14968 | architecture address size. */ | |
14969 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14970 | base_type = int_type; | |
14971 | else | |
14972 | { | |
14973 | int_type = objfile_type (objfile)->builtin_long; | |
14974 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14975 | base_type = int_type; | |
14976 | else | |
14977 | { | |
14978 | int_type = objfile_type (objfile)->builtin_long_long; | |
14979 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14980 | base_type = int_type; | |
14981 | } | |
14982 | } | |
14983 | } | |
a02abb62 | 14984 | |
dbb9c2b1 JB |
14985 | /* Normally, the DWARF producers are expected to use a signed |
14986 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
14987 | But this is unfortunately not always the case, as witnessed | |
14988 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
14989 | is used instead. To work around that ambiguity, we treat | |
14990 | the bounds as signed, and thus sign-extend their values, when | |
14991 | the base type is signed. */ | |
6e70227d | 14992 | negative_mask = |
43bbcdc2 | 14993 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
729efb13 SA |
14994 | if (low.kind == PROP_CONST |
14995 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
14996 | low.data.const_val |= negative_mask; | |
14997 | if (high.kind == PROP_CONST | |
14998 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
14999 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 15000 | |
729efb13 | 15001 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 15002 | |
c451ebe5 SA |
15003 | if (high_bound_is_count) |
15004 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
15005 | ||
c2ff108b JK |
15006 | /* Ada expects an empty array on no boundary attributes. */ |
15007 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 15008 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 15009 | |
39cbfefa DJ |
15010 | name = dwarf2_name (die, cu); |
15011 | if (name) | |
15012 | TYPE_NAME (range_type) = name; | |
6e70227d | 15013 | |
e142c38c | 15014 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
15015 | if (attr) |
15016 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
15017 | ||
7e314c57 JK |
15018 | set_die_type (die, range_type, cu); |
15019 | ||
15020 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
15021 | set_descriptive_type (range_type, die, cu); |
15022 | ||
7e314c57 | 15023 | return range_type; |
a02abb62 | 15024 | } |
6e70227d | 15025 | |
f792889a | 15026 | static struct type * |
81a17f79 JB |
15027 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
15028 | { | |
15029 | struct type *type; | |
81a17f79 | 15030 | |
81a17f79 JB |
15031 | /* For now, we only support the C meaning of an unspecified type: void. */ |
15032 | ||
0114d602 DJ |
15033 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
15034 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 15035 | |
f792889a | 15036 | return set_die_type (die, type, cu); |
81a17f79 | 15037 | } |
a02abb62 | 15038 | |
639d11d3 DC |
15039 | /* Read a single die and all its descendents. Set the die's sibling |
15040 | field to NULL; set other fields in the die correctly, and set all | |
15041 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
15042 | location of the info_ptr after reading all of those dies. PARENT | |
15043 | is the parent of the die in question. */ | |
15044 | ||
15045 | static struct die_info * | |
dee91e82 | 15046 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
15047 | const gdb_byte *info_ptr, |
15048 | const gdb_byte **new_info_ptr, | |
dee91e82 | 15049 | struct die_info *parent) |
639d11d3 DC |
15050 | { |
15051 | struct die_info *die; | |
d521ce57 | 15052 | const gdb_byte *cur_ptr; |
639d11d3 DC |
15053 | int has_children; |
15054 | ||
bf6af496 | 15055 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
15056 | if (die == NULL) |
15057 | { | |
15058 | *new_info_ptr = cur_ptr; | |
15059 | return NULL; | |
15060 | } | |
93311388 | 15061 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
15062 | |
15063 | if (has_children) | |
bf6af496 | 15064 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
15065 | else |
15066 | { | |
15067 | die->child = NULL; | |
15068 | *new_info_ptr = cur_ptr; | |
15069 | } | |
15070 | ||
15071 | die->sibling = NULL; | |
15072 | die->parent = parent; | |
15073 | return die; | |
15074 | } | |
15075 | ||
15076 | /* Read a die, all of its descendents, and all of its siblings; set | |
15077 | all of the fields of all of the dies correctly. Arguments are as | |
15078 | in read_die_and_children. */ | |
15079 | ||
15080 | static struct die_info * | |
bf6af496 | 15081 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
15082 | const gdb_byte *info_ptr, |
15083 | const gdb_byte **new_info_ptr, | |
bf6af496 | 15084 | struct die_info *parent) |
639d11d3 DC |
15085 | { |
15086 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 15087 | const gdb_byte *cur_ptr; |
639d11d3 | 15088 | |
c906108c | 15089 | cur_ptr = info_ptr; |
639d11d3 DC |
15090 | first_die = last_sibling = NULL; |
15091 | ||
15092 | while (1) | |
c906108c | 15093 | { |
639d11d3 | 15094 | struct die_info *die |
dee91e82 | 15095 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 15096 | |
1d325ec1 | 15097 | if (die == NULL) |
c906108c | 15098 | { |
639d11d3 DC |
15099 | *new_info_ptr = cur_ptr; |
15100 | return first_die; | |
c906108c | 15101 | } |
1d325ec1 DJ |
15102 | |
15103 | if (!first_die) | |
15104 | first_die = die; | |
c906108c | 15105 | else |
1d325ec1 DJ |
15106 | last_sibling->sibling = die; |
15107 | ||
15108 | last_sibling = die; | |
c906108c | 15109 | } |
c906108c SS |
15110 | } |
15111 | ||
bf6af496 DE |
15112 | /* Read a die, all of its descendents, and all of its siblings; set |
15113 | all of the fields of all of the dies correctly. Arguments are as | |
15114 | in read_die_and_children. | |
15115 | This the main entry point for reading a DIE and all its children. */ | |
15116 | ||
15117 | static struct die_info * | |
15118 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
15119 | const gdb_byte *info_ptr, |
15120 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
15121 | struct die_info *parent) |
15122 | { | |
15123 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
15124 | new_info_ptr, parent); | |
15125 | ||
15126 | if (dwarf2_die_debug) | |
15127 | { | |
15128 | fprintf_unfiltered (gdb_stdlog, | |
15129 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15130 | get_section_name (reader->die_section), |
bf6af496 DE |
15131 | (unsigned) (info_ptr - reader->die_section->buffer), |
15132 | bfd_get_filename (reader->abfd)); | |
15133 | dump_die (die, dwarf2_die_debug); | |
15134 | } | |
15135 | ||
15136 | return die; | |
15137 | } | |
15138 | ||
3019eac3 DE |
15139 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
15140 | attributes. | |
15141 | The caller is responsible for filling in the extra attributes | |
15142 | and updating (*DIEP)->num_attrs. | |
15143 | Set DIEP to point to a newly allocated die with its information, | |
15144 | except for its child, sibling, and parent fields. | |
15145 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 15146 | |
d521ce57 | 15147 | static const gdb_byte * |
3019eac3 | 15148 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 15149 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 15150 | int *has_children, int num_extra_attrs) |
93311388 | 15151 | { |
b64f50a1 JK |
15152 | unsigned int abbrev_number, bytes_read, i; |
15153 | sect_offset offset; | |
93311388 DE |
15154 | struct abbrev_info *abbrev; |
15155 | struct die_info *die; | |
15156 | struct dwarf2_cu *cu = reader->cu; | |
15157 | bfd *abfd = reader->abfd; | |
15158 | ||
b64f50a1 | 15159 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
15160 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15161 | info_ptr += bytes_read; | |
15162 | if (!abbrev_number) | |
15163 | { | |
15164 | *diep = NULL; | |
15165 | *has_children = 0; | |
15166 | return info_ptr; | |
15167 | } | |
15168 | ||
433df2d4 | 15169 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 15170 | if (!abbrev) |
348e048f DE |
15171 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
15172 | abbrev_number, | |
15173 | bfd_get_filename (abfd)); | |
15174 | ||
3019eac3 | 15175 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
15176 | die->offset = offset; |
15177 | die->tag = abbrev->tag; | |
15178 | die->abbrev = abbrev_number; | |
15179 | ||
3019eac3 DE |
15180 | /* Make the result usable. |
15181 | The caller needs to update num_attrs after adding the extra | |
15182 | attributes. */ | |
93311388 DE |
15183 | die->num_attrs = abbrev->num_attrs; |
15184 | ||
15185 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
15186 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
15187 | info_ptr); | |
93311388 DE |
15188 | |
15189 | *diep = die; | |
15190 | *has_children = abbrev->has_children; | |
15191 | return info_ptr; | |
15192 | } | |
15193 | ||
3019eac3 DE |
15194 | /* Read a die and all its attributes. |
15195 | Set DIEP to point to a newly allocated die with its information, | |
15196 | except for its child, sibling, and parent fields. | |
15197 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
15198 | ||
d521ce57 | 15199 | static const gdb_byte * |
3019eac3 | 15200 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 15201 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
15202 | int *has_children) |
15203 | { | |
d521ce57 | 15204 | const gdb_byte *result; |
bf6af496 DE |
15205 | |
15206 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
15207 | ||
15208 | if (dwarf2_die_debug) | |
15209 | { | |
15210 | fprintf_unfiltered (gdb_stdlog, | |
15211 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15212 | get_section_name (reader->die_section), |
bf6af496 DE |
15213 | (unsigned) (info_ptr - reader->die_section->buffer), |
15214 | bfd_get_filename (reader->abfd)); | |
15215 | dump_die (*diep, dwarf2_die_debug); | |
15216 | } | |
15217 | ||
15218 | return result; | |
3019eac3 | 15219 | } |
433df2d4 DE |
15220 | \f |
15221 | /* Abbreviation tables. | |
3019eac3 | 15222 | |
433df2d4 | 15223 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
15224 | stored in a separate .debug_abbrev section. Before we read any |
15225 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
15226 | in a hash table. */ |
15227 | ||
15228 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
15229 | ||
15230 | static struct abbrev_info * | |
15231 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
15232 | { | |
15233 | struct abbrev_info *abbrev; | |
15234 | ||
15235 | abbrev = (struct abbrev_info *) | |
15236 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
15237 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
15238 | return abbrev; | |
15239 | } | |
15240 | ||
15241 | /* Add an abbreviation to the table. */ | |
c906108c SS |
15242 | |
15243 | static void | |
433df2d4 DE |
15244 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
15245 | unsigned int abbrev_number, | |
15246 | struct abbrev_info *abbrev) | |
15247 | { | |
15248 | unsigned int hash_number; | |
15249 | ||
15250 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15251 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
15252 | abbrev_table->abbrevs[hash_number] = abbrev; | |
15253 | } | |
dee91e82 | 15254 | |
433df2d4 DE |
15255 | /* Look up an abbrev in the table. |
15256 | Returns NULL if the abbrev is not found. */ | |
15257 | ||
15258 | static struct abbrev_info * | |
15259 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
15260 | unsigned int abbrev_number) | |
c906108c | 15261 | { |
433df2d4 DE |
15262 | unsigned int hash_number; |
15263 | struct abbrev_info *abbrev; | |
15264 | ||
15265 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15266 | abbrev = abbrev_table->abbrevs[hash_number]; | |
15267 | ||
15268 | while (abbrev) | |
15269 | { | |
15270 | if (abbrev->number == abbrev_number) | |
15271 | return abbrev; | |
15272 | abbrev = abbrev->next; | |
15273 | } | |
15274 | return NULL; | |
15275 | } | |
15276 | ||
15277 | /* Read in an abbrev table. */ | |
15278 | ||
15279 | static struct abbrev_table * | |
15280 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
15281 | sect_offset offset) | |
15282 | { | |
15283 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 15284 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 15285 | struct abbrev_table *abbrev_table; |
d521ce57 | 15286 | const gdb_byte *abbrev_ptr; |
c906108c SS |
15287 | struct abbrev_info *cur_abbrev; |
15288 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 15289 | unsigned int abbrev_form; |
f3dd6933 DJ |
15290 | struct attr_abbrev *cur_attrs; |
15291 | unsigned int allocated_attrs; | |
c906108c | 15292 | |
70ba0933 | 15293 | abbrev_table = XNEW (struct abbrev_table); |
f4dc4d17 | 15294 | abbrev_table->offset = offset; |
433df2d4 DE |
15295 | obstack_init (&abbrev_table->abbrev_obstack); |
15296 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
15297 | (ABBREV_HASH_SIZE | |
15298 | * sizeof (struct abbrev_info *))); | |
15299 | memset (abbrev_table->abbrevs, 0, | |
15300 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 15301 | |
433df2d4 DE |
15302 | dwarf2_read_section (objfile, section); |
15303 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
15304 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15305 | abbrev_ptr += bytes_read; | |
15306 | ||
f3dd6933 DJ |
15307 | allocated_attrs = ATTR_ALLOC_CHUNK; |
15308 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 15309 | |
0963b4bd | 15310 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
15311 | while (abbrev_number) |
15312 | { | |
433df2d4 | 15313 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
15314 | |
15315 | /* read in abbrev header */ | |
15316 | cur_abbrev->number = abbrev_number; | |
15317 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15318 | abbrev_ptr += bytes_read; | |
15319 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
15320 | abbrev_ptr += 1; | |
15321 | ||
15322 | /* now read in declarations */ | |
15323 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15324 | abbrev_ptr += bytes_read; | |
15325 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15326 | abbrev_ptr += bytes_read; | |
15327 | while (abbrev_name) | |
15328 | { | |
f3dd6933 | 15329 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 15330 | { |
f3dd6933 DJ |
15331 | allocated_attrs += ATTR_ALLOC_CHUNK; |
15332 | cur_attrs | |
15333 | = xrealloc (cur_attrs, (allocated_attrs | |
15334 | * sizeof (struct attr_abbrev))); | |
c906108c | 15335 | } |
ae038cb0 | 15336 | |
f3dd6933 DJ |
15337 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
15338 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
15339 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15340 | abbrev_ptr += bytes_read; | |
15341 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15342 | abbrev_ptr += bytes_read; | |
15343 | } | |
15344 | ||
433df2d4 | 15345 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
15346 | (cur_abbrev->num_attrs |
15347 | * sizeof (struct attr_abbrev))); | |
15348 | memcpy (cur_abbrev->attrs, cur_attrs, | |
15349 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
15350 | ||
433df2d4 | 15351 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
15352 | |
15353 | /* Get next abbreviation. | |
15354 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
15355 | always properly terminated with an abbrev number of 0. |
15356 | Exit loop if we encounter an abbreviation which we have | |
15357 | already read (which means we are about to read the abbreviations | |
15358 | for the next compile unit) or if the end of the abbreviation | |
15359 | table is reached. */ | |
433df2d4 | 15360 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
15361 | break; |
15362 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15363 | abbrev_ptr += bytes_read; | |
433df2d4 | 15364 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
15365 | break; |
15366 | } | |
f3dd6933 DJ |
15367 | |
15368 | xfree (cur_attrs); | |
433df2d4 | 15369 | return abbrev_table; |
c906108c SS |
15370 | } |
15371 | ||
433df2d4 | 15372 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 15373 | |
c906108c | 15374 | static void |
433df2d4 | 15375 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 15376 | { |
433df2d4 DE |
15377 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
15378 | xfree (abbrev_table); | |
c906108c SS |
15379 | } |
15380 | ||
f4dc4d17 DE |
15381 | /* Same as abbrev_table_free but as a cleanup. |
15382 | We pass in a pointer to the pointer to the table so that we can | |
15383 | set the pointer to NULL when we're done. It also simplifies | |
73051182 | 15384 | build_type_psymtabs_1. */ |
f4dc4d17 DE |
15385 | |
15386 | static void | |
15387 | abbrev_table_free_cleanup (void *table_ptr) | |
15388 | { | |
15389 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
15390 | ||
15391 | if (*abbrev_table_ptr != NULL) | |
15392 | abbrev_table_free (*abbrev_table_ptr); | |
15393 | *abbrev_table_ptr = NULL; | |
15394 | } | |
15395 | ||
433df2d4 DE |
15396 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
15397 | ||
15398 | static void | |
15399 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
15400 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 15401 | { |
433df2d4 DE |
15402 | cu->abbrev_table = |
15403 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
15404 | } | |
c906108c | 15405 | |
433df2d4 | 15406 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 15407 | |
433df2d4 DE |
15408 | static void |
15409 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
15410 | { | |
15411 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 15412 | |
a2ce51a0 DE |
15413 | if (cu->abbrev_table != NULL) |
15414 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
15415 | /* Set this to NULL so that we SEGV if we try to read it later, |
15416 | and also because free_comp_unit verifies this is NULL. */ | |
15417 | cu->abbrev_table = NULL; | |
15418 | } | |
15419 | \f | |
72bf9492 DJ |
15420 | /* Returns nonzero if TAG represents a type that we might generate a partial |
15421 | symbol for. */ | |
15422 | ||
15423 | static int | |
15424 | is_type_tag_for_partial (int tag) | |
15425 | { | |
15426 | switch (tag) | |
15427 | { | |
15428 | #if 0 | |
15429 | /* Some types that would be reasonable to generate partial symbols for, | |
15430 | that we don't at present. */ | |
15431 | case DW_TAG_array_type: | |
15432 | case DW_TAG_file_type: | |
15433 | case DW_TAG_ptr_to_member_type: | |
15434 | case DW_TAG_set_type: | |
15435 | case DW_TAG_string_type: | |
15436 | case DW_TAG_subroutine_type: | |
15437 | #endif | |
15438 | case DW_TAG_base_type: | |
15439 | case DW_TAG_class_type: | |
680b30c7 | 15440 | case DW_TAG_interface_type: |
72bf9492 DJ |
15441 | case DW_TAG_enumeration_type: |
15442 | case DW_TAG_structure_type: | |
15443 | case DW_TAG_subrange_type: | |
15444 | case DW_TAG_typedef: | |
15445 | case DW_TAG_union_type: | |
15446 | return 1; | |
15447 | default: | |
15448 | return 0; | |
15449 | } | |
15450 | } | |
15451 | ||
15452 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
15453 | ||
15454 | static struct partial_die_info * | |
dee91e82 | 15455 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 15456 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 15457 | { |
dee91e82 | 15458 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15459 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
15460 | struct partial_die_info *part_die; |
15461 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
15462 | struct abbrev_info *abbrev; | |
15463 | unsigned int bytes_read; | |
5afb4e99 | 15464 | unsigned int load_all = 0; |
72bf9492 DJ |
15465 | int nesting_level = 1; |
15466 | ||
15467 | parent_die = NULL; | |
15468 | last_die = NULL; | |
15469 | ||
7adf1e79 DE |
15470 | gdb_assert (cu->per_cu != NULL); |
15471 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
15472 | load_all = 1; |
15473 | ||
72bf9492 DJ |
15474 | cu->partial_dies |
15475 | = htab_create_alloc_ex (cu->header.length / 12, | |
15476 | partial_die_hash, | |
15477 | partial_die_eq, | |
15478 | NULL, | |
15479 | &cu->comp_unit_obstack, | |
15480 | hashtab_obstack_allocate, | |
15481 | dummy_obstack_deallocate); | |
15482 | ||
15483 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
15484 | sizeof (struct partial_die_info)); | |
15485 | ||
15486 | while (1) | |
15487 | { | |
15488 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
15489 | ||
15490 | /* A NULL abbrev means the end of a series of children. */ | |
15491 | if (abbrev == NULL) | |
15492 | { | |
15493 | if (--nesting_level == 0) | |
15494 | { | |
15495 | /* PART_DIE was probably the last thing allocated on the | |
15496 | comp_unit_obstack, so we could call obstack_free | |
15497 | here. We don't do that because the waste is small, | |
15498 | and will be cleaned up when we're done with this | |
15499 | compilation unit. This way, we're also more robust | |
15500 | against other users of the comp_unit_obstack. */ | |
15501 | return first_die; | |
15502 | } | |
15503 | info_ptr += bytes_read; | |
15504 | last_die = parent_die; | |
15505 | parent_die = parent_die->die_parent; | |
15506 | continue; | |
15507 | } | |
15508 | ||
98bfdba5 PA |
15509 | /* Check for template arguments. We never save these; if |
15510 | they're seen, we just mark the parent, and go on our way. */ | |
15511 | if (parent_die != NULL | |
15512 | && cu->language == language_cplus | |
15513 | && (abbrev->tag == DW_TAG_template_type_param | |
15514 | || abbrev->tag == DW_TAG_template_value_param)) | |
15515 | { | |
15516 | parent_die->has_template_arguments = 1; | |
15517 | ||
15518 | if (!load_all) | |
15519 | { | |
15520 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 15521 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15522 | continue; |
15523 | } | |
15524 | } | |
15525 | ||
0d99eb77 | 15526 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
15527 | Skip their other children. */ |
15528 | if (!load_all | |
15529 | && cu->language == language_cplus | |
15530 | && parent_die != NULL | |
15531 | && parent_die->tag == DW_TAG_subprogram) | |
15532 | { | |
dee91e82 | 15533 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15534 | continue; |
15535 | } | |
15536 | ||
5afb4e99 DJ |
15537 | /* Check whether this DIE is interesting enough to save. Normally |
15538 | we would not be interested in members here, but there may be | |
15539 | later variables referencing them via DW_AT_specification (for | |
15540 | static members). */ | |
15541 | if (!load_all | |
15542 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 15543 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
15544 | && abbrev->tag != DW_TAG_enumerator |
15545 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 15546 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 15547 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 15548 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 15549 | && abbrev->tag != DW_TAG_module |
95554aad | 15550 | && abbrev->tag != DW_TAG_member |
74921315 KS |
15551 | && abbrev->tag != DW_TAG_imported_unit |
15552 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
15553 | { |
15554 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15555 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
15556 | continue; |
15557 | } | |
15558 | ||
dee91e82 DE |
15559 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
15560 | info_ptr); | |
72bf9492 DJ |
15561 | |
15562 | /* This two-pass algorithm for processing partial symbols has a | |
15563 | high cost in cache pressure. Thus, handle some simple cases | |
15564 | here which cover the majority of C partial symbols. DIEs | |
15565 | which neither have specification tags in them, nor could have | |
15566 | specification tags elsewhere pointing at them, can simply be | |
15567 | processed and discarded. | |
15568 | ||
15569 | This segment is also optional; scan_partial_symbols and | |
15570 | add_partial_symbol will handle these DIEs if we chain | |
15571 | them in normally. When compilers which do not emit large | |
15572 | quantities of duplicate debug information are more common, | |
15573 | this code can probably be removed. */ | |
15574 | ||
15575 | /* Any complete simple types at the top level (pretty much all | |
15576 | of them, for a language without namespaces), can be processed | |
15577 | directly. */ | |
15578 | if (parent_die == NULL | |
15579 | && part_die->has_specification == 0 | |
15580 | && part_die->is_declaration == 0 | |
d8228535 | 15581 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
15582 | || part_die->tag == DW_TAG_base_type |
15583 | || part_die->tag == DW_TAG_subrange_type)) | |
15584 | { | |
15585 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 15586 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15587 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
15588 | &objfile->static_psymbols, |
15589 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 15590 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15591 | continue; |
15592 | } | |
15593 | ||
d8228535 JK |
15594 | /* The exception for DW_TAG_typedef with has_children above is |
15595 | a workaround of GCC PR debug/47510. In the case of this complaint | |
15596 | type_name_no_tag_or_error will error on such types later. | |
15597 | ||
15598 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
15599 | it could not find the child DIEs referenced later, this is checked | |
15600 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
15601 | ||
15602 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
15603 | complaint (&symfile_complaints, | |
15604 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
15605 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 15606 | part_die->offset.sect_off, objfile_name (objfile)); |
d8228535 | 15607 | |
72bf9492 DJ |
15608 | /* If we're at the second level, and we're an enumerator, and |
15609 | our parent has no specification (meaning possibly lives in a | |
15610 | namespace elsewhere), then we can add the partial symbol now | |
15611 | instead of queueing it. */ | |
15612 | if (part_die->tag == DW_TAG_enumerator | |
15613 | && parent_die != NULL | |
15614 | && parent_die->die_parent == NULL | |
15615 | && parent_die->tag == DW_TAG_enumeration_type | |
15616 | && parent_die->has_specification == 0) | |
15617 | { | |
15618 | if (part_die->name == NULL) | |
3e43a32a MS |
15619 | complaint (&symfile_complaints, |
15620 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 15621 | else if (building_psymtab) |
04a679b8 | 15622 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15623 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
15624 | (cu->language == language_cplus |
15625 | || cu->language == language_java) | |
bb5ed363 DE |
15626 | ? &objfile->global_psymbols |
15627 | : &objfile->static_psymbols, | |
15628 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 15629 | |
dee91e82 | 15630 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15631 | continue; |
15632 | } | |
15633 | ||
15634 | /* We'll save this DIE so link it in. */ | |
15635 | part_die->die_parent = parent_die; | |
15636 | part_die->die_sibling = NULL; | |
15637 | part_die->die_child = NULL; | |
15638 | ||
15639 | if (last_die && last_die == parent_die) | |
15640 | last_die->die_child = part_die; | |
15641 | else if (last_die) | |
15642 | last_die->die_sibling = part_die; | |
15643 | ||
15644 | last_die = part_die; | |
15645 | ||
15646 | if (first_die == NULL) | |
15647 | first_die = part_die; | |
15648 | ||
15649 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
15650 | find interesting need to be in the hash table, because we | |
15651 | also have the parent/sibling/child chains; only those that we | |
15652 | might refer to by offset later during partial symbol reading. | |
15653 | ||
15654 | For now this means things that might have be the target of a | |
15655 | DW_AT_specification, DW_AT_abstract_origin, or | |
15656 | DW_AT_extension. DW_AT_extension will refer only to | |
15657 | namespaces; DW_AT_abstract_origin refers to functions (and | |
15658 | many things under the function DIE, but we do not recurse | |
15659 | into function DIEs during partial symbol reading) and | |
15660 | possibly variables as well; DW_AT_specification refers to | |
15661 | declarations. Declarations ought to have the DW_AT_declaration | |
15662 | flag. It happens that GCC forgets to put it in sometimes, but | |
15663 | only for functions, not for types. | |
15664 | ||
15665 | Adding more things than necessary to the hash table is harmless | |
15666 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
15667 | wasted time in find_partial_die, when we reread the compilation |
15668 | unit with load_all_dies set. */ | |
72bf9492 | 15669 | |
5afb4e99 | 15670 | if (load_all |
72929c62 | 15671 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 15672 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
15673 | || abbrev->tag == DW_TAG_variable |
15674 | || abbrev->tag == DW_TAG_namespace | |
15675 | || part_die->is_declaration) | |
15676 | { | |
15677 | void **slot; | |
15678 | ||
15679 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 15680 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
15681 | *slot = part_die; |
15682 | } | |
15683 | ||
15684 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
15685 | sizeof (struct partial_die_info)); | |
15686 | ||
15687 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 15688 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
15689 | languages we have to, so that we can get at method physnames |
15690 | to infer fully qualified class names, for DW_AT_specification, | |
15691 | and for C++ template arguments. For C++, we also look one level | |
15692 | inside functions to find template arguments (if the name of the | |
15693 | function does not already contain the template arguments). | |
bc30ff58 JB |
15694 | |
15695 | For Ada, we need to scan the children of subprograms and lexical | |
15696 | blocks as well because Ada allows the definition of nested | |
15697 | entities that could be interesting for the debugger, such as | |
15698 | nested subprograms for instance. */ | |
72bf9492 | 15699 | if (last_die->has_children |
5afb4e99 DJ |
15700 | && (load_all |
15701 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 15702 | || last_die->tag == DW_TAG_module |
72bf9492 | 15703 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
15704 | || (cu->language == language_cplus |
15705 | && last_die->tag == DW_TAG_subprogram | |
15706 | && (last_die->name == NULL | |
15707 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
15708 | || (cu->language != language_c |
15709 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 15710 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 15711 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
15712 | || last_die->tag == DW_TAG_union_type)) |
15713 | || (cu->language == language_ada | |
15714 | && (last_die->tag == DW_TAG_subprogram | |
15715 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
15716 | { |
15717 | nesting_level++; | |
15718 | parent_die = last_die; | |
15719 | continue; | |
15720 | } | |
15721 | ||
15722 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15723 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
15724 | |
15725 | /* Back to the top, do it again. */ | |
15726 | } | |
15727 | } | |
15728 | ||
c906108c SS |
15729 | /* Read a minimal amount of information into the minimal die structure. */ |
15730 | ||
d521ce57 | 15731 | static const gdb_byte * |
dee91e82 DE |
15732 | read_partial_die (const struct die_reader_specs *reader, |
15733 | struct partial_die_info *part_die, | |
15734 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 15735 | const gdb_byte *info_ptr) |
c906108c | 15736 | { |
dee91e82 | 15737 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15738 | struct objfile *objfile = cu->objfile; |
d521ce57 | 15739 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 15740 | unsigned int i; |
c906108c | 15741 | struct attribute attr; |
c5aa993b | 15742 | int has_low_pc_attr = 0; |
c906108c | 15743 | int has_high_pc_attr = 0; |
91da1414 | 15744 | int high_pc_relative = 0; |
c906108c | 15745 | |
72bf9492 | 15746 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 15747 | |
b64f50a1 | 15748 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
15749 | |
15750 | info_ptr += abbrev_len; | |
15751 | ||
15752 | if (abbrev == NULL) | |
15753 | return info_ptr; | |
15754 | ||
c906108c SS |
15755 | part_die->tag = abbrev->tag; |
15756 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
15757 | |
15758 | for (i = 0; i < abbrev->num_attrs; ++i) | |
15759 | { | |
dee91e82 | 15760 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
15761 | |
15762 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 15763 | partial symbol table. */ |
c906108c SS |
15764 | switch (attr.name) |
15765 | { | |
15766 | case DW_AT_name: | |
71c25dea TT |
15767 | switch (part_die->tag) |
15768 | { | |
15769 | case DW_TAG_compile_unit: | |
95554aad | 15770 | case DW_TAG_partial_unit: |
348e048f | 15771 | case DW_TAG_type_unit: |
71c25dea TT |
15772 | /* Compilation units have a DW_AT_name that is a filename, not |
15773 | a source language identifier. */ | |
15774 | case DW_TAG_enumeration_type: | |
15775 | case DW_TAG_enumerator: | |
15776 | /* These tags always have simple identifiers already; no need | |
15777 | to canonicalize them. */ | |
15778 | part_die->name = DW_STRING (&attr); | |
15779 | break; | |
15780 | default: | |
15781 | part_die->name | |
15782 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
34a68019 | 15783 | &objfile->per_bfd->storage_obstack); |
71c25dea TT |
15784 | break; |
15785 | } | |
c906108c | 15786 | break; |
31ef98ae | 15787 | case DW_AT_linkage_name: |
c906108c | 15788 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
15789 | /* Note that both forms of linkage name might appear. We |
15790 | assume they will be the same, and we only store the last | |
15791 | one we see. */ | |
94af9270 KS |
15792 | if (cu->language == language_ada) |
15793 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 15794 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
15795 | break; |
15796 | case DW_AT_low_pc: | |
15797 | has_low_pc_attr = 1; | |
31aa7e4e | 15798 | part_die->lowpc = attr_value_as_address (&attr); |
c906108c SS |
15799 | break; |
15800 | case DW_AT_high_pc: | |
15801 | has_high_pc_attr = 1; | |
31aa7e4e JB |
15802 | part_die->highpc = attr_value_as_address (&attr); |
15803 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) | |
15804 | high_pc_relative = 1; | |
c906108c SS |
15805 | break; |
15806 | case DW_AT_location: | |
0963b4bd | 15807 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
15808 | if (attr_form_is_block (&attr)) |
15809 | { | |
95554aad | 15810 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 15811 | } |
3690dd37 | 15812 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 15813 | { |
4d3c2250 | 15814 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15815 | } |
15816 | else | |
15817 | { | |
4d3c2250 KB |
15818 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
15819 | "partial symbol information"); | |
8e19ed76 | 15820 | } |
c906108c | 15821 | break; |
c906108c SS |
15822 | case DW_AT_external: |
15823 | part_die->is_external = DW_UNSND (&attr); | |
15824 | break; | |
15825 | case DW_AT_declaration: | |
15826 | part_die->is_declaration = DW_UNSND (&attr); | |
15827 | break; | |
15828 | case DW_AT_type: | |
15829 | part_die->has_type = 1; | |
15830 | break; | |
15831 | case DW_AT_abstract_origin: | |
15832 | case DW_AT_specification: | |
72bf9492 DJ |
15833 | case DW_AT_extension: |
15834 | part_die->has_specification = 1; | |
c764a876 | 15835 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
15836 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
15837 | || cu->per_cu->is_dwz); | |
c906108c SS |
15838 | break; |
15839 | case DW_AT_sibling: | |
15840 | /* Ignore absolute siblings, they might point outside of | |
15841 | the current compile unit. */ | |
15842 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
15843 | complaint (&symfile_complaints, |
15844 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 15845 | else |
b9502d3f WN |
15846 | { |
15847 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
15848 | const gdb_byte *sibling_ptr = buffer + off; | |
15849 | ||
15850 | if (sibling_ptr < info_ptr) | |
15851 | complaint (&symfile_complaints, | |
15852 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
15853 | else if (sibling_ptr > reader->buffer_end) |
15854 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
15855 | else |
15856 | part_die->sibling = sibling_ptr; | |
15857 | } | |
c906108c | 15858 | break; |
fa4028e9 JB |
15859 | case DW_AT_byte_size: |
15860 | part_die->has_byte_size = 1; | |
15861 | break; | |
ff908ebf AW |
15862 | case DW_AT_const_value: |
15863 | part_die->has_const_value = 1; | |
15864 | break; | |
68511cec CES |
15865 | case DW_AT_calling_convention: |
15866 | /* DWARF doesn't provide a way to identify a program's source-level | |
15867 | entry point. DW_AT_calling_convention attributes are only meant | |
15868 | to describe functions' calling conventions. | |
15869 | ||
15870 | However, because it's a necessary piece of information in | |
15871 | Fortran, and because DW_CC_program is the only piece of debugging | |
15872 | information whose definition refers to a 'main program' at all, | |
15873 | several compilers have begun marking Fortran main programs with | |
15874 | DW_CC_program --- even when those functions use the standard | |
15875 | calling conventions. | |
15876 | ||
15877 | So until DWARF specifies a way to provide this information and | |
15878 | compilers pick up the new representation, we'll support this | |
15879 | practice. */ | |
15880 | if (DW_UNSND (&attr) == DW_CC_program | |
15881 | && cu->language == language_fortran) | |
3d548a53 | 15882 | set_objfile_main_name (objfile, part_die->name, language_fortran); |
68511cec | 15883 | break; |
481860b3 GB |
15884 | case DW_AT_inline: |
15885 | if (DW_UNSND (&attr) == DW_INL_inlined | |
15886 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
15887 | part_die->may_be_inlined = 1; | |
15888 | break; | |
95554aad TT |
15889 | |
15890 | case DW_AT_import: | |
15891 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
15892 | { |
15893 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
15894 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
15895 | || cu->per_cu->is_dwz); | |
15896 | } | |
95554aad TT |
15897 | break; |
15898 | ||
c906108c SS |
15899 | default: |
15900 | break; | |
15901 | } | |
15902 | } | |
15903 | ||
91da1414 MW |
15904 | if (high_pc_relative) |
15905 | part_die->highpc += part_die->lowpc; | |
15906 | ||
9373cf26 JK |
15907 | if (has_low_pc_attr && has_high_pc_attr) |
15908 | { | |
15909 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
15910 | eliminate duplicate copies of functions and vtables and such. | |
15911 | The linker will arbitrarily choose one and discard the others. | |
15912 | The AT_*_pc values for such functions refer to local labels in | |
15913 | these sections. If the section from that file was discarded, the | |
15914 | labels are not in the output, so the relocs get a value of 0. | |
15915 | If this is a discarded function, mark the pc bounds as invalid, | |
15916 | so that GDB will ignore it. */ | |
15917 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
15918 | { | |
bb5ed363 | 15919 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15920 | |
15921 | complaint (&symfile_complaints, | |
15922 | _("DW_AT_low_pc %s is zero " | |
15923 | "for DIE at 0x%x [in module %s]"), | |
15924 | paddress (gdbarch, part_die->lowpc), | |
4262abfb | 15925 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15926 | } |
15927 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
15928 | else if (part_die->lowpc >= part_die->highpc) | |
15929 | { | |
bb5ed363 | 15930 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15931 | |
15932 | complaint (&symfile_complaints, | |
15933 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
15934 | "for DIE at 0x%x [in module %s]"), | |
15935 | paddress (gdbarch, part_die->lowpc), | |
15936 | paddress (gdbarch, part_die->highpc), | |
4262abfb | 15937 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15938 | } |
15939 | else | |
15940 | part_die->has_pc_info = 1; | |
15941 | } | |
85cbf3d3 | 15942 | |
c906108c SS |
15943 | return info_ptr; |
15944 | } | |
15945 | ||
72bf9492 DJ |
15946 | /* Find a cached partial DIE at OFFSET in CU. */ |
15947 | ||
15948 | static struct partial_die_info * | |
b64f50a1 | 15949 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
15950 | { |
15951 | struct partial_die_info *lookup_die = NULL; | |
15952 | struct partial_die_info part_die; | |
15953 | ||
15954 | part_die.offset = offset; | |
b64f50a1 JK |
15955 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
15956 | offset.sect_off); | |
72bf9492 | 15957 | |
72bf9492 DJ |
15958 | return lookup_die; |
15959 | } | |
15960 | ||
348e048f DE |
15961 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
15962 | except in the case of .debug_types DIEs which do not reference | |
15963 | outside their CU (they do however referencing other types via | |
55f1336d | 15964 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
15965 | |
15966 | static struct partial_die_info * | |
36586728 | 15967 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 15968 | { |
bb5ed363 | 15969 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
15970 | struct dwarf2_per_cu_data *per_cu = NULL; |
15971 | struct partial_die_info *pd = NULL; | |
72bf9492 | 15972 | |
36586728 TT |
15973 | if (offset_in_dwz == cu->per_cu->is_dwz |
15974 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
15975 | { |
15976 | pd = find_partial_die_in_comp_unit (offset, cu); | |
15977 | if (pd != NULL) | |
15978 | return pd; | |
0d99eb77 DE |
15979 | /* We missed recording what we needed. |
15980 | Load all dies and try again. */ | |
15981 | per_cu = cu->per_cu; | |
5afb4e99 | 15982 | } |
0d99eb77 DE |
15983 | else |
15984 | { | |
15985 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 15986 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
15987 | { |
15988 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
15989 | " external reference to offset 0x%lx [in module %s].\n"), | |
15990 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
15991 | bfd_get_filename (objfile->obfd)); | |
15992 | } | |
36586728 TT |
15993 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
15994 | objfile); | |
72bf9492 | 15995 | |
0d99eb77 DE |
15996 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
15997 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 15998 | |
0d99eb77 DE |
15999 | per_cu->cu->last_used = 0; |
16000 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
16001 | } | |
5afb4e99 | 16002 | |
dee91e82 DE |
16003 | /* If we didn't find it, and not all dies have been loaded, |
16004 | load them all and try again. */ | |
16005 | ||
5afb4e99 DJ |
16006 | if (pd == NULL && per_cu->load_all_dies == 0) |
16007 | { | |
5afb4e99 | 16008 | per_cu->load_all_dies = 1; |
fd820528 DE |
16009 | |
16010 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
16011 | THIS_CU->cu may already be in use. So we can't just free it and | |
16012 | replace its DIEs with the ones we read in. Instead, we leave those | |
16013 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
16014 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
16015 | set. */ | |
dee91e82 | 16016 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
16017 | |
16018 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
16019 | } | |
16020 | ||
16021 | if (pd == NULL) | |
16022 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
16023 | _("could not find partial DIE 0x%x " |
16024 | "in cache [from module %s]\n"), | |
b64f50a1 | 16025 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 16026 | return pd; |
72bf9492 DJ |
16027 | } |
16028 | ||
abc72ce4 DE |
16029 | /* See if we can figure out if the class lives in a namespace. We do |
16030 | this by looking for a member function; its demangled name will | |
16031 | contain namespace info, if there is any. */ | |
16032 | ||
16033 | static void | |
16034 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
16035 | struct dwarf2_cu *cu) | |
16036 | { | |
16037 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
16038 | what template types look like, because the demangler | |
16039 | frequently doesn't give the same name as the debug info. We | |
16040 | could fix this by only using the demangled name to get the | |
16041 | prefix (but see comment in read_structure_type). */ | |
16042 | ||
16043 | struct partial_die_info *real_pdi; | |
16044 | struct partial_die_info *child_pdi; | |
16045 | ||
16046 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
16047 | we should not do this. We'll prepend the parent's fully qualified | |
16048 | name when we create the partial symbol. */ | |
16049 | ||
16050 | real_pdi = struct_pdi; | |
16051 | while (real_pdi->has_specification) | |
36586728 TT |
16052 | real_pdi = find_partial_die (real_pdi->spec_offset, |
16053 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
16054 | |
16055 | if (real_pdi->die_parent != NULL) | |
16056 | return; | |
16057 | ||
16058 | for (child_pdi = struct_pdi->die_child; | |
16059 | child_pdi != NULL; | |
16060 | child_pdi = child_pdi->die_sibling) | |
16061 | { | |
16062 | if (child_pdi->tag == DW_TAG_subprogram | |
16063 | && child_pdi->linkage_name != NULL) | |
16064 | { | |
16065 | char *actual_class_name | |
16066 | = language_class_name_from_physname (cu->language_defn, | |
16067 | child_pdi->linkage_name); | |
16068 | if (actual_class_name != NULL) | |
16069 | { | |
16070 | struct_pdi->name | |
34a68019 | 16071 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb TT |
16072 | actual_class_name, |
16073 | strlen (actual_class_name)); | |
abc72ce4 DE |
16074 | xfree (actual_class_name); |
16075 | } | |
16076 | break; | |
16077 | } | |
16078 | } | |
16079 | } | |
16080 | ||
72bf9492 DJ |
16081 | /* Adjust PART_DIE before generating a symbol for it. This function |
16082 | may set the is_external flag or change the DIE's name. */ | |
16083 | ||
16084 | static void | |
16085 | fixup_partial_die (struct partial_die_info *part_die, | |
16086 | struct dwarf2_cu *cu) | |
16087 | { | |
abc72ce4 DE |
16088 | /* Once we've fixed up a die, there's no point in doing so again. |
16089 | This also avoids a memory leak if we were to call | |
16090 | guess_partial_die_structure_name multiple times. */ | |
16091 | if (part_die->fixup_called) | |
16092 | return; | |
16093 | ||
72bf9492 DJ |
16094 | /* If we found a reference attribute and the DIE has no name, try |
16095 | to find a name in the referred to DIE. */ | |
16096 | ||
16097 | if (part_die->name == NULL && part_die->has_specification) | |
16098 | { | |
16099 | struct partial_die_info *spec_die; | |
72bf9492 | 16100 | |
36586728 TT |
16101 | spec_die = find_partial_die (part_die->spec_offset, |
16102 | part_die->spec_is_dwz, cu); | |
72bf9492 | 16103 | |
10b3939b | 16104 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
16105 | |
16106 | if (spec_die->name) | |
16107 | { | |
16108 | part_die->name = spec_die->name; | |
16109 | ||
16110 | /* Copy DW_AT_external attribute if it is set. */ | |
16111 | if (spec_die->is_external) | |
16112 | part_die->is_external = spec_die->is_external; | |
16113 | } | |
16114 | } | |
16115 | ||
16116 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
16117 | |
16118 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 16119 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 16120 | |
abc72ce4 DE |
16121 | /* If there is no parent die to provide a namespace, and there are |
16122 | children, see if we can determine the namespace from their linkage | |
122d1940 | 16123 | name. */ |
abc72ce4 | 16124 | if (cu->language == language_cplus |
8b70b953 | 16125 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
16126 | && part_die->die_parent == NULL |
16127 | && part_die->has_children | |
16128 | && (part_die->tag == DW_TAG_class_type | |
16129 | || part_die->tag == DW_TAG_structure_type | |
16130 | || part_die->tag == DW_TAG_union_type)) | |
16131 | guess_partial_die_structure_name (part_die, cu); | |
16132 | ||
53832f31 TT |
16133 | /* GCC might emit a nameless struct or union that has a linkage |
16134 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
16135 | if (part_die->name == NULL | |
96408a79 SA |
16136 | && (part_die->tag == DW_TAG_class_type |
16137 | || part_die->tag == DW_TAG_interface_type | |
16138 | || part_die->tag == DW_TAG_structure_type | |
16139 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
16140 | && part_die->linkage_name != NULL) |
16141 | { | |
16142 | char *demangled; | |
16143 | ||
8de20a37 | 16144 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
16145 | if (demangled) |
16146 | { | |
96408a79 SA |
16147 | const char *base; |
16148 | ||
16149 | /* Strip any leading namespaces/classes, keep only the base name. | |
16150 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
16151 | base = strrchr (demangled, ':'); | |
16152 | if (base && base > demangled && base[-1] == ':') | |
16153 | base++; | |
16154 | else | |
16155 | base = demangled; | |
16156 | ||
34a68019 TT |
16157 | part_die->name |
16158 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
16159 | base, strlen (base)); | |
53832f31 TT |
16160 | xfree (demangled); |
16161 | } | |
16162 | } | |
16163 | ||
abc72ce4 | 16164 | part_die->fixup_called = 1; |
72bf9492 DJ |
16165 | } |
16166 | ||
a8329558 | 16167 | /* Read an attribute value described by an attribute form. */ |
c906108c | 16168 | |
d521ce57 | 16169 | static const gdb_byte * |
dee91e82 DE |
16170 | read_attribute_value (const struct die_reader_specs *reader, |
16171 | struct attribute *attr, unsigned form, | |
d521ce57 | 16172 | const gdb_byte *info_ptr) |
c906108c | 16173 | { |
dee91e82 | 16174 | struct dwarf2_cu *cu = reader->cu; |
3e29f34a MR |
16175 | struct objfile *objfile = cu->objfile; |
16176 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
dee91e82 | 16177 | bfd *abfd = reader->abfd; |
e7c27a73 | 16178 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16179 | unsigned int bytes_read; |
16180 | struct dwarf_block *blk; | |
16181 | ||
a8329558 KW |
16182 | attr->form = form; |
16183 | switch (form) | |
c906108c | 16184 | { |
c906108c | 16185 | case DW_FORM_ref_addr: |
ae411497 | 16186 | if (cu->header.version == 2) |
4568ecf9 | 16187 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 16188 | else |
4568ecf9 DE |
16189 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
16190 | &cu->header, &bytes_read); | |
ae411497 TT |
16191 | info_ptr += bytes_read; |
16192 | break; | |
36586728 TT |
16193 | case DW_FORM_GNU_ref_alt: |
16194 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16195 | info_ptr += bytes_read; | |
16196 | break; | |
ae411497 | 16197 | case DW_FORM_addr: |
e7c27a73 | 16198 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 16199 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 16200 | info_ptr += bytes_read; |
c906108c SS |
16201 | break; |
16202 | case DW_FORM_block2: | |
7b5a2f43 | 16203 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16204 | blk->size = read_2_bytes (abfd, info_ptr); |
16205 | info_ptr += 2; | |
16206 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16207 | info_ptr += blk->size; | |
16208 | DW_BLOCK (attr) = blk; | |
16209 | break; | |
16210 | case DW_FORM_block4: | |
7b5a2f43 | 16211 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16212 | blk->size = read_4_bytes (abfd, info_ptr); |
16213 | info_ptr += 4; | |
16214 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16215 | info_ptr += blk->size; | |
16216 | DW_BLOCK (attr) = blk; | |
16217 | break; | |
16218 | case DW_FORM_data2: | |
16219 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
16220 | info_ptr += 2; | |
16221 | break; | |
16222 | case DW_FORM_data4: | |
16223 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
16224 | info_ptr += 4; | |
16225 | break; | |
16226 | case DW_FORM_data8: | |
16227 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
16228 | info_ptr += 8; | |
16229 | break; | |
2dc7f7b3 TT |
16230 | case DW_FORM_sec_offset: |
16231 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16232 | info_ptr += bytes_read; | |
16233 | break; | |
c906108c | 16234 | case DW_FORM_string: |
9b1c24c8 | 16235 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 16236 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
16237 | info_ptr += bytes_read; |
16238 | break; | |
4bdf3d34 | 16239 | case DW_FORM_strp: |
36586728 TT |
16240 | if (!cu->per_cu->is_dwz) |
16241 | { | |
16242 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
16243 | &bytes_read); | |
16244 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16245 | info_ptr += bytes_read; | |
16246 | break; | |
16247 | } | |
16248 | /* FALLTHROUGH */ | |
16249 | case DW_FORM_GNU_strp_alt: | |
16250 | { | |
16251 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
16252 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
16253 | &bytes_read); | |
16254 | ||
16255 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
16256 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16257 | info_ptr += bytes_read; | |
16258 | } | |
4bdf3d34 | 16259 | break; |
2dc7f7b3 | 16260 | case DW_FORM_exprloc: |
c906108c | 16261 | case DW_FORM_block: |
7b5a2f43 | 16262 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16263 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16264 | info_ptr += bytes_read; | |
16265 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16266 | info_ptr += blk->size; | |
16267 | DW_BLOCK (attr) = blk; | |
16268 | break; | |
16269 | case DW_FORM_block1: | |
7b5a2f43 | 16270 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16271 | blk->size = read_1_byte (abfd, info_ptr); |
16272 | info_ptr += 1; | |
16273 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16274 | info_ptr += blk->size; | |
16275 | DW_BLOCK (attr) = blk; | |
16276 | break; | |
16277 | case DW_FORM_data1: | |
16278 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16279 | info_ptr += 1; | |
16280 | break; | |
16281 | case DW_FORM_flag: | |
16282 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16283 | info_ptr += 1; | |
16284 | break; | |
2dc7f7b3 TT |
16285 | case DW_FORM_flag_present: |
16286 | DW_UNSND (attr) = 1; | |
16287 | break; | |
c906108c SS |
16288 | case DW_FORM_sdata: |
16289 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
16290 | info_ptr += bytes_read; | |
16291 | break; | |
16292 | case DW_FORM_udata: | |
16293 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16294 | info_ptr += bytes_read; | |
16295 | break; | |
16296 | case DW_FORM_ref1: | |
4568ecf9 DE |
16297 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16298 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
16299 | info_ptr += 1; |
16300 | break; | |
16301 | case DW_FORM_ref2: | |
4568ecf9 DE |
16302 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16303 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
16304 | info_ptr += 2; |
16305 | break; | |
16306 | case DW_FORM_ref4: | |
4568ecf9 DE |
16307 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16308 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
16309 | info_ptr += 4; |
16310 | break; | |
613e1657 | 16311 | case DW_FORM_ref8: |
4568ecf9 DE |
16312 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16313 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
16314 | info_ptr += 8; |
16315 | break; | |
55f1336d | 16316 | case DW_FORM_ref_sig8: |
ac9ec31b | 16317 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
16318 | info_ptr += 8; |
16319 | break; | |
c906108c | 16320 | case DW_FORM_ref_udata: |
4568ecf9 DE |
16321 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16322 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
16323 | info_ptr += bytes_read; |
16324 | break; | |
c906108c | 16325 | case DW_FORM_indirect: |
a8329558 KW |
16326 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16327 | info_ptr += bytes_read; | |
dee91e82 | 16328 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 16329 | break; |
3019eac3 DE |
16330 | case DW_FORM_GNU_addr_index: |
16331 | if (reader->dwo_file == NULL) | |
16332 | { | |
16333 | /* For now flag a hard error. | |
16334 | Later we can turn this into a complaint. */ | |
16335 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16336 | dwarf_form_name (form), | |
16337 | bfd_get_filename (abfd)); | |
16338 | } | |
16339 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
16340 | info_ptr += bytes_read; | |
16341 | break; | |
16342 | case DW_FORM_GNU_str_index: | |
16343 | if (reader->dwo_file == NULL) | |
16344 | { | |
16345 | /* For now flag a hard error. | |
16346 | Later we can turn this into a complaint if warranted. */ | |
16347 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16348 | dwarf_form_name (form), | |
16349 | bfd_get_filename (abfd)); | |
16350 | } | |
16351 | { | |
16352 | ULONGEST str_index = | |
16353 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16354 | ||
342587c4 | 16355 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
16356 | DW_STRING_IS_CANONICAL (attr) = 0; |
16357 | info_ptr += bytes_read; | |
16358 | } | |
16359 | break; | |
c906108c | 16360 | default: |
8a3fe4f8 | 16361 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
16362 | dwarf_form_name (form), |
16363 | bfd_get_filename (abfd)); | |
c906108c | 16364 | } |
28e94949 | 16365 | |
36586728 | 16366 | /* Super hack. */ |
7771576e | 16367 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
16368 | attr->form = DW_FORM_GNU_ref_alt; |
16369 | ||
28e94949 JB |
16370 | /* We have seen instances where the compiler tried to emit a byte |
16371 | size attribute of -1 which ended up being encoded as an unsigned | |
16372 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
16373 | an object of this size seems pretty unlikely so we can relatively | |
16374 | safely treat these cases as if the size attribute was invalid and | |
16375 | treat them as zero by default. */ | |
16376 | if (attr->name == DW_AT_byte_size | |
16377 | && form == DW_FORM_data4 | |
16378 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
16379 | { |
16380 | complaint | |
16381 | (&symfile_complaints, | |
43bbcdc2 PH |
16382 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
16383 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
16384 | DW_UNSND (attr) = 0; |
16385 | } | |
28e94949 | 16386 | |
c906108c SS |
16387 | return info_ptr; |
16388 | } | |
16389 | ||
a8329558 KW |
16390 | /* Read an attribute described by an abbreviated attribute. */ |
16391 | ||
d521ce57 | 16392 | static const gdb_byte * |
dee91e82 DE |
16393 | read_attribute (const struct die_reader_specs *reader, |
16394 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 16395 | const gdb_byte *info_ptr) |
a8329558 KW |
16396 | { |
16397 | attr->name = abbrev->name; | |
dee91e82 | 16398 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
16399 | } |
16400 | ||
0963b4bd | 16401 | /* Read dwarf information from a buffer. */ |
c906108c SS |
16402 | |
16403 | static unsigned int | |
a1855c1d | 16404 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16405 | { |
fe1b8b76 | 16406 | return bfd_get_8 (abfd, buf); |
c906108c SS |
16407 | } |
16408 | ||
16409 | static int | |
a1855c1d | 16410 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16411 | { |
fe1b8b76 | 16412 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
16413 | } |
16414 | ||
16415 | static unsigned int | |
a1855c1d | 16416 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16417 | { |
fe1b8b76 | 16418 | return bfd_get_16 (abfd, buf); |
c906108c SS |
16419 | } |
16420 | ||
21ae7a4d | 16421 | static int |
a1855c1d | 16422 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16423 | { |
16424 | return bfd_get_signed_16 (abfd, buf); | |
16425 | } | |
16426 | ||
c906108c | 16427 | static unsigned int |
a1855c1d | 16428 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16429 | { |
fe1b8b76 | 16430 | return bfd_get_32 (abfd, buf); |
c906108c SS |
16431 | } |
16432 | ||
21ae7a4d | 16433 | static int |
a1855c1d | 16434 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16435 | { |
16436 | return bfd_get_signed_32 (abfd, buf); | |
16437 | } | |
16438 | ||
93311388 | 16439 | static ULONGEST |
a1855c1d | 16440 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16441 | { |
fe1b8b76 | 16442 | return bfd_get_64 (abfd, buf); |
c906108c SS |
16443 | } |
16444 | ||
16445 | static CORE_ADDR | |
d521ce57 | 16446 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 16447 | unsigned int *bytes_read) |
c906108c | 16448 | { |
e7c27a73 | 16449 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16450 | CORE_ADDR retval = 0; |
16451 | ||
107d2387 | 16452 | if (cu_header->signed_addr_p) |
c906108c | 16453 | { |
107d2387 AC |
16454 | switch (cu_header->addr_size) |
16455 | { | |
16456 | case 2: | |
fe1b8b76 | 16457 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
16458 | break; |
16459 | case 4: | |
fe1b8b76 | 16460 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
16461 | break; |
16462 | case 8: | |
fe1b8b76 | 16463 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
16464 | break; |
16465 | default: | |
8e65ff28 | 16466 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 16467 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 16468 | bfd_get_filename (abfd)); |
107d2387 AC |
16469 | } |
16470 | } | |
16471 | else | |
16472 | { | |
16473 | switch (cu_header->addr_size) | |
16474 | { | |
16475 | case 2: | |
fe1b8b76 | 16476 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
16477 | break; |
16478 | case 4: | |
fe1b8b76 | 16479 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
16480 | break; |
16481 | case 8: | |
fe1b8b76 | 16482 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
16483 | break; |
16484 | default: | |
8e65ff28 | 16485 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
16486 | _("read_address: bad switch, " |
16487 | "unsigned [in module %s]"), | |
659b0389 | 16488 | bfd_get_filename (abfd)); |
107d2387 | 16489 | } |
c906108c | 16490 | } |
64367e0a | 16491 | |
107d2387 AC |
16492 | *bytes_read = cu_header->addr_size; |
16493 | return retval; | |
c906108c SS |
16494 | } |
16495 | ||
f7ef9339 | 16496 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
16497 | specification allows the initial length to take up either 4 bytes |
16498 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
16499 | bytes describe the length and all offsets will be 8 bytes in length | |
16500 | instead of 4. | |
16501 | ||
f7ef9339 KB |
16502 | An older, non-standard 64-bit format is also handled by this |
16503 | function. The older format in question stores the initial length | |
16504 | as an 8-byte quantity without an escape value. Lengths greater | |
16505 | than 2^32 aren't very common which means that the initial 4 bytes | |
16506 | is almost always zero. Since a length value of zero doesn't make | |
16507 | sense for the 32-bit format, this initial zero can be considered to | |
16508 | be an escape value which indicates the presence of the older 64-bit | |
16509 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
16510 | greater than 4GB. If it becomes necessary to handle lengths |
16511 | somewhat larger than 4GB, we could allow other small values (such | |
16512 | as the non-sensical values of 1, 2, and 3) to also be used as | |
16513 | escape values indicating the presence of the old format. | |
f7ef9339 | 16514 | |
917c78fc MK |
16515 | The value returned via bytes_read should be used to increment the |
16516 | relevant pointer after calling read_initial_length(). | |
c764a876 | 16517 | |
613e1657 KB |
16518 | [ Note: read_initial_length() and read_offset() are based on the |
16519 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 16520 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
16521 | from: |
16522 | ||
f7ef9339 | 16523 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 16524 | |
613e1657 KB |
16525 | This document is only a draft and is subject to change. (So beware.) |
16526 | ||
f7ef9339 | 16527 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
16528 | determined empirically by examining 64-bit ELF files produced by |
16529 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
16530 | |
16531 | - Kevin, July 16, 2002 | |
613e1657 KB |
16532 | ] */ |
16533 | ||
16534 | static LONGEST | |
d521ce57 | 16535 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 16536 | { |
fe1b8b76 | 16537 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 16538 | |
dd373385 | 16539 | if (length == 0xffffffff) |
613e1657 | 16540 | { |
fe1b8b76 | 16541 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 16542 | *bytes_read = 12; |
613e1657 | 16543 | } |
dd373385 | 16544 | else if (length == 0) |
f7ef9339 | 16545 | { |
dd373385 | 16546 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 16547 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 16548 | *bytes_read = 8; |
f7ef9339 | 16549 | } |
613e1657 KB |
16550 | else |
16551 | { | |
16552 | *bytes_read = 4; | |
613e1657 KB |
16553 | } |
16554 | ||
c764a876 DE |
16555 | return length; |
16556 | } | |
dd373385 | 16557 | |
c764a876 DE |
16558 | /* Cover function for read_initial_length. |
16559 | Returns the length of the object at BUF, and stores the size of the | |
16560 | initial length in *BYTES_READ and stores the size that offsets will be in | |
16561 | *OFFSET_SIZE. | |
16562 | If the initial length size is not equivalent to that specified in | |
16563 | CU_HEADER then issue a complaint. | |
16564 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 16565 | |
c764a876 | 16566 | static LONGEST |
d521ce57 | 16567 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
16568 | const struct comp_unit_head *cu_header, |
16569 | unsigned int *bytes_read, | |
16570 | unsigned int *offset_size) | |
16571 | { | |
16572 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
16573 | ||
16574 | gdb_assert (cu_header->initial_length_size == 4 | |
16575 | || cu_header->initial_length_size == 8 | |
16576 | || cu_header->initial_length_size == 12); | |
16577 | ||
16578 | if (cu_header->initial_length_size != *bytes_read) | |
16579 | complaint (&symfile_complaints, | |
16580 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 16581 | |
c764a876 | 16582 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 16583 | return length; |
613e1657 KB |
16584 | } |
16585 | ||
16586 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 16587 | given by cu_header->offset_size. */ |
613e1657 KB |
16588 | |
16589 | static LONGEST | |
d521ce57 TT |
16590 | read_offset (bfd *abfd, const gdb_byte *buf, |
16591 | const struct comp_unit_head *cu_header, | |
891d2f0b | 16592 | unsigned int *bytes_read) |
c764a876 DE |
16593 | { |
16594 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 16595 | |
c764a876 DE |
16596 | *bytes_read = cu_header->offset_size; |
16597 | return offset; | |
16598 | } | |
16599 | ||
16600 | /* Read an offset from the data stream. */ | |
16601 | ||
16602 | static LONGEST | |
d521ce57 | 16603 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
16604 | { |
16605 | LONGEST retval = 0; | |
16606 | ||
c764a876 | 16607 | switch (offset_size) |
613e1657 KB |
16608 | { |
16609 | case 4: | |
fe1b8b76 | 16610 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
16611 | break; |
16612 | case 8: | |
fe1b8b76 | 16613 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
16614 | break; |
16615 | default: | |
8e65ff28 | 16616 | internal_error (__FILE__, __LINE__, |
c764a876 | 16617 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 16618 | bfd_get_filename (abfd)); |
613e1657 KB |
16619 | } |
16620 | ||
917c78fc | 16621 | return retval; |
613e1657 KB |
16622 | } |
16623 | ||
d521ce57 TT |
16624 | static const gdb_byte * |
16625 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
16626 | { |
16627 | /* If the size of a host char is 8 bits, we can return a pointer | |
16628 | to the buffer, otherwise we have to copy the data to a buffer | |
16629 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16630 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 16631 | return buf; |
c906108c SS |
16632 | } |
16633 | ||
d521ce57 TT |
16634 | static const char * |
16635 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
16636 | unsigned int *bytes_read_ptr) | |
c906108c SS |
16637 | { |
16638 | /* If the size of a host char is 8 bits, we can return a pointer | |
16639 | to the string, otherwise we have to copy the string to a buffer | |
16640 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16641 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
16642 | if (*buf == '\0') |
16643 | { | |
16644 | *bytes_read_ptr = 1; | |
16645 | return NULL; | |
16646 | } | |
d521ce57 TT |
16647 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
16648 | return (const char *) buf; | |
4bdf3d34 JJ |
16649 | } |
16650 | ||
d521ce57 | 16651 | static const char * |
cf2c3c16 | 16652 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 16653 | { |
be391dca | 16654 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 16655 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
16656 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
16657 | bfd_get_filename (abfd)); | |
dce234bc | 16658 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
16659 | error (_("DW_FORM_strp pointing outside of " |
16660 | ".debug_str section [in module %s]"), | |
16661 | bfd_get_filename (abfd)); | |
4bdf3d34 | 16662 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 16663 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 16664 | return NULL; |
d521ce57 | 16665 | return (const char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
16666 | } |
16667 | ||
36586728 TT |
16668 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
16669 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
16670 | the string consists of a single NUL byte, return NULL; otherwise | |
16671 | return a pointer to the string. */ | |
16672 | ||
d521ce57 | 16673 | static const char * |
36586728 TT |
16674 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
16675 | { | |
16676 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
16677 | ||
16678 | if (dwz->str.buffer == NULL) | |
16679 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
16680 | "section [in module %s]"), | |
16681 | bfd_get_filename (dwz->dwz_bfd)); | |
16682 | if (str_offset >= dwz->str.size) | |
16683 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
16684 | ".debug_str section [in module %s]"), | |
16685 | bfd_get_filename (dwz->dwz_bfd)); | |
16686 | gdb_assert (HOST_CHAR_BIT == 8); | |
16687 | if (dwz->str.buffer[str_offset] == '\0') | |
16688 | return NULL; | |
d521ce57 | 16689 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
16690 | } |
16691 | ||
d521ce57 TT |
16692 | static const char * |
16693 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
16694 | const struct comp_unit_head *cu_header, |
16695 | unsigned int *bytes_read_ptr) | |
16696 | { | |
16697 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
16698 | ||
16699 | return read_indirect_string_at_offset (abfd, str_offset); | |
16700 | } | |
16701 | ||
12df843f | 16702 | static ULONGEST |
d521ce57 TT |
16703 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
16704 | unsigned int *bytes_read_ptr) | |
c906108c | 16705 | { |
12df843f | 16706 | ULONGEST result; |
ce5d95e1 | 16707 | unsigned int num_read; |
c906108c SS |
16708 | int i, shift; |
16709 | unsigned char byte; | |
16710 | ||
16711 | result = 0; | |
16712 | shift = 0; | |
16713 | num_read = 0; | |
16714 | i = 0; | |
16715 | while (1) | |
16716 | { | |
fe1b8b76 | 16717 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16718 | buf++; |
16719 | num_read++; | |
12df843f | 16720 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
16721 | if ((byte & 128) == 0) |
16722 | { | |
16723 | break; | |
16724 | } | |
16725 | shift += 7; | |
16726 | } | |
16727 | *bytes_read_ptr = num_read; | |
16728 | return result; | |
16729 | } | |
16730 | ||
12df843f | 16731 | static LONGEST |
d521ce57 TT |
16732 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
16733 | unsigned int *bytes_read_ptr) | |
c906108c | 16734 | { |
12df843f | 16735 | LONGEST result; |
77e0b926 | 16736 | int i, shift, num_read; |
c906108c SS |
16737 | unsigned char byte; |
16738 | ||
16739 | result = 0; | |
16740 | shift = 0; | |
c906108c SS |
16741 | num_read = 0; |
16742 | i = 0; | |
16743 | while (1) | |
16744 | { | |
fe1b8b76 | 16745 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16746 | buf++; |
16747 | num_read++; | |
12df843f | 16748 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
16749 | shift += 7; |
16750 | if ((byte & 128) == 0) | |
16751 | { | |
16752 | break; | |
16753 | } | |
16754 | } | |
77e0b926 | 16755 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 16756 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
16757 | *bytes_read_ptr = num_read; |
16758 | return result; | |
16759 | } | |
16760 | ||
3019eac3 DE |
16761 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
16762 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
16763 | ADDR_SIZE is the size of addresses from the CU header. */ | |
16764 | ||
16765 | static CORE_ADDR | |
16766 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
16767 | { | |
16768 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
16769 | bfd *abfd = objfile->obfd; | |
16770 | const gdb_byte *info_ptr; | |
16771 | ||
16772 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
16773 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
16774 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 16775 | objfile_name (objfile)); |
3019eac3 DE |
16776 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
16777 | error (_("DW_FORM_addr_index pointing outside of " | |
16778 | ".debug_addr section [in module %s]"), | |
4262abfb | 16779 | objfile_name (objfile)); |
3019eac3 DE |
16780 | info_ptr = (dwarf2_per_objfile->addr.buffer |
16781 | + addr_base + addr_index * addr_size); | |
16782 | if (addr_size == 4) | |
16783 | return bfd_get_32 (abfd, info_ptr); | |
16784 | else | |
16785 | return bfd_get_64 (abfd, info_ptr); | |
16786 | } | |
16787 | ||
16788 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
16789 | ||
16790 | static CORE_ADDR | |
16791 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
16792 | { | |
16793 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
16794 | } | |
16795 | ||
16796 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
16797 | ||
16798 | static CORE_ADDR | |
d521ce57 | 16799 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
16800 | unsigned int *bytes_read) |
16801 | { | |
16802 | bfd *abfd = cu->objfile->obfd; | |
16803 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
16804 | ||
16805 | return read_addr_index (cu, addr_index); | |
16806 | } | |
16807 | ||
16808 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
16809 | back to dwarf2_read_addr_index. */ | |
16810 | ||
16811 | struct dwarf2_read_addr_index_data | |
16812 | { | |
16813 | ULONGEST addr_base; | |
16814 | int addr_size; | |
16815 | }; | |
16816 | ||
16817 | /* die_reader_func for dwarf2_read_addr_index. */ | |
16818 | ||
16819 | static void | |
16820 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 16821 | const gdb_byte *info_ptr, |
3019eac3 DE |
16822 | struct die_info *comp_unit_die, |
16823 | int has_children, | |
16824 | void *data) | |
16825 | { | |
16826 | struct dwarf2_cu *cu = reader->cu; | |
16827 | struct dwarf2_read_addr_index_data *aidata = | |
16828 | (struct dwarf2_read_addr_index_data *) data; | |
16829 | ||
16830 | aidata->addr_base = cu->addr_base; | |
16831 | aidata->addr_size = cu->header.addr_size; | |
16832 | } | |
16833 | ||
16834 | /* Given an index in .debug_addr, fetch the value. | |
16835 | NOTE: This can be called during dwarf expression evaluation, | |
16836 | long after the debug information has been read, and thus per_cu->cu | |
16837 | may no longer exist. */ | |
16838 | ||
16839 | CORE_ADDR | |
16840 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
16841 | unsigned int addr_index) | |
16842 | { | |
16843 | struct objfile *objfile = per_cu->objfile; | |
16844 | struct dwarf2_cu *cu = per_cu->cu; | |
16845 | ULONGEST addr_base; | |
16846 | int addr_size; | |
16847 | ||
16848 | /* This is intended to be called from outside this file. */ | |
16849 | dw2_setup (objfile); | |
16850 | ||
16851 | /* We need addr_base and addr_size. | |
16852 | If we don't have PER_CU->cu, we have to get it. | |
16853 | Nasty, but the alternative is storing the needed info in PER_CU, | |
16854 | which at this point doesn't seem justified: it's not clear how frequently | |
16855 | it would get used and it would increase the size of every PER_CU. | |
16856 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
16857 | so we're not in uncharted territory here. | |
16858 | Alas we need to be a bit more complicated as addr_base is contained | |
16859 | in the DIE. | |
16860 | ||
16861 | We don't need to read the entire CU(/TU). | |
16862 | We just need the header and top level die. | |
a1b64ce1 | 16863 | |
3019eac3 | 16864 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 16865 | For now we skip this optimization. */ |
3019eac3 DE |
16866 | |
16867 | if (cu != NULL) | |
16868 | { | |
16869 | addr_base = cu->addr_base; | |
16870 | addr_size = cu->header.addr_size; | |
16871 | } | |
16872 | else | |
16873 | { | |
16874 | struct dwarf2_read_addr_index_data aidata; | |
16875 | ||
a1b64ce1 DE |
16876 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
16877 | we need addr_base. */ | |
16878 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
16879 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
16880 | addr_base = aidata.addr_base; |
16881 | addr_size = aidata.addr_size; | |
16882 | } | |
16883 | ||
16884 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
16885 | } | |
16886 | ||
57d63ce2 DE |
16887 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
16888 | This is only used by the Fission support. */ | |
3019eac3 | 16889 | |
d521ce57 | 16890 | static const char * |
342587c4 | 16891 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 DE |
16892 | { |
16893 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
c5164cbc | 16894 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 16895 | bfd *abfd = objfile->obfd; |
342587c4 | 16896 | struct dwarf2_cu *cu = reader->cu; |
73869dc2 DE |
16897 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
16898 | struct dwarf2_section_info *str_offsets_section = | |
16899 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 16900 | const gdb_byte *info_ptr; |
3019eac3 | 16901 | ULONGEST str_offset; |
57d63ce2 | 16902 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 16903 | |
73869dc2 DE |
16904 | dwarf2_read_section (objfile, str_section); |
16905 | dwarf2_read_section (objfile, str_offsets_section); | |
16906 | if (str_section->buffer == NULL) | |
57d63ce2 | 16907 | error (_("%s used without .debug_str.dwo section" |
3019eac3 | 16908 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16909 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16910 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 16911 | error (_("%s used without .debug_str_offsets.dwo section" |
3019eac3 | 16912 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16913 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16914 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 16915 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
3019eac3 | 16916 | " section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16917 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16918 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
16919 | + str_index * cu->header.offset_size); |
16920 | if (cu->header.offset_size == 4) | |
16921 | str_offset = bfd_get_32 (abfd, info_ptr); | |
16922 | else | |
16923 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 16924 | if (str_offset >= str_section->size) |
57d63ce2 | 16925 | error (_("Offset from %s pointing outside of" |
3019eac3 | 16926 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16927 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16928 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
16929 | } |
16930 | ||
3019eac3 DE |
16931 | /* Return the length of an LEB128 number in BUF. */ |
16932 | ||
16933 | static int | |
16934 | leb128_size (const gdb_byte *buf) | |
16935 | { | |
16936 | const gdb_byte *begin = buf; | |
16937 | gdb_byte byte; | |
16938 | ||
16939 | while (1) | |
16940 | { | |
16941 | byte = *buf++; | |
16942 | if ((byte & 128) == 0) | |
16943 | return buf - begin; | |
16944 | } | |
16945 | } | |
16946 | ||
c906108c | 16947 | static void |
e142c38c | 16948 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
16949 | { |
16950 | switch (lang) | |
16951 | { | |
16952 | case DW_LANG_C89: | |
76bee0cc | 16953 | case DW_LANG_C99: |
0cfd832f | 16954 | case DW_LANG_C11: |
c906108c | 16955 | case DW_LANG_C: |
d1be3247 | 16956 | case DW_LANG_UPC: |
e142c38c | 16957 | cu->language = language_c; |
c906108c SS |
16958 | break; |
16959 | case DW_LANG_C_plus_plus: | |
0cfd832f MW |
16960 | case DW_LANG_C_plus_plus_11: |
16961 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 16962 | cu->language = language_cplus; |
c906108c | 16963 | break; |
6aecb9c2 JB |
16964 | case DW_LANG_D: |
16965 | cu->language = language_d; | |
16966 | break; | |
c906108c SS |
16967 | case DW_LANG_Fortran77: |
16968 | case DW_LANG_Fortran90: | |
b21b22e0 | 16969 | case DW_LANG_Fortran95: |
f7de9aab MW |
16970 | case DW_LANG_Fortran03: |
16971 | case DW_LANG_Fortran08: | |
e142c38c | 16972 | cu->language = language_fortran; |
c906108c | 16973 | break; |
a766d390 DE |
16974 | case DW_LANG_Go: |
16975 | cu->language = language_go; | |
16976 | break; | |
c906108c | 16977 | case DW_LANG_Mips_Assembler: |
e142c38c | 16978 | cu->language = language_asm; |
c906108c | 16979 | break; |
bebd888e | 16980 | case DW_LANG_Java: |
e142c38c | 16981 | cu->language = language_java; |
bebd888e | 16982 | break; |
c906108c | 16983 | case DW_LANG_Ada83: |
8aaf0b47 | 16984 | case DW_LANG_Ada95: |
bc5f45f8 JB |
16985 | cu->language = language_ada; |
16986 | break; | |
72019c9c GM |
16987 | case DW_LANG_Modula2: |
16988 | cu->language = language_m2; | |
16989 | break; | |
fe8e67fd PM |
16990 | case DW_LANG_Pascal83: |
16991 | cu->language = language_pascal; | |
16992 | break; | |
22566fbd DJ |
16993 | case DW_LANG_ObjC: |
16994 | cu->language = language_objc; | |
16995 | break; | |
c906108c SS |
16996 | case DW_LANG_Cobol74: |
16997 | case DW_LANG_Cobol85: | |
c906108c | 16998 | default: |
e142c38c | 16999 | cu->language = language_minimal; |
c906108c SS |
17000 | break; |
17001 | } | |
e142c38c | 17002 | cu->language_defn = language_def (cu->language); |
c906108c SS |
17003 | } |
17004 | ||
17005 | /* Return the named attribute or NULL if not there. */ | |
17006 | ||
17007 | static struct attribute * | |
e142c38c | 17008 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 17009 | { |
a48e046c | 17010 | for (;;) |
c906108c | 17011 | { |
a48e046c TT |
17012 | unsigned int i; |
17013 | struct attribute *spec = NULL; | |
17014 | ||
17015 | for (i = 0; i < die->num_attrs; ++i) | |
17016 | { | |
17017 | if (die->attrs[i].name == name) | |
17018 | return &die->attrs[i]; | |
17019 | if (die->attrs[i].name == DW_AT_specification | |
17020 | || die->attrs[i].name == DW_AT_abstract_origin) | |
17021 | spec = &die->attrs[i]; | |
17022 | } | |
17023 | ||
17024 | if (!spec) | |
17025 | break; | |
c906108c | 17026 | |
f2f0e013 | 17027 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 17028 | } |
c5aa993b | 17029 | |
c906108c SS |
17030 | return NULL; |
17031 | } | |
17032 | ||
348e048f DE |
17033 | /* Return the named attribute or NULL if not there, |
17034 | but do not follow DW_AT_specification, etc. | |
17035 | This is for use in contexts where we're reading .debug_types dies. | |
17036 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
17037 | back up the chain, and we want to go down. */ | |
17038 | ||
17039 | static struct attribute * | |
45e58e77 | 17040 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
17041 | { |
17042 | unsigned int i; | |
17043 | ||
17044 | for (i = 0; i < die->num_attrs; ++i) | |
17045 | if (die->attrs[i].name == name) | |
17046 | return &die->attrs[i]; | |
17047 | ||
17048 | return NULL; | |
17049 | } | |
17050 | ||
05cf31d1 JB |
17051 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
17052 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 17053 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
17054 | |
17055 | static int | |
17056 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
17057 | { | |
17058 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
17059 | ||
17060 | return (attr && DW_UNSND (attr)); | |
17061 | } | |
17062 | ||
3ca72b44 | 17063 | static int |
e142c38c | 17064 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 17065 | { |
05cf31d1 JB |
17066 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
17067 | which value is non-zero. However, we have to be careful with | |
17068 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
17069 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
17070 | end up accidently finding a declaration attribute that belongs | |
17071 | to a different DIE referenced by the specification attribute, | |
17072 | even though the given DIE does not have a declaration attribute. */ | |
17073 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
17074 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
17075 | } |
17076 | ||
63d06c5c | 17077 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 17078 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
17079 | containing the return value on output. If there is no |
17080 | specification, but there is an abstract origin, that is | |
17081 | returned. */ | |
63d06c5c DC |
17082 | |
17083 | static struct die_info * | |
f2f0e013 | 17084 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 17085 | { |
f2f0e013 DJ |
17086 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
17087 | *spec_cu); | |
63d06c5c | 17088 | |
edb3359d DJ |
17089 | if (spec_attr == NULL) |
17090 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
17091 | ||
63d06c5c DC |
17092 | if (spec_attr == NULL) |
17093 | return NULL; | |
17094 | else | |
f2f0e013 | 17095 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 17096 | } |
c906108c | 17097 | |
debd256d | 17098 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
17099 | refers to. |
17100 | NOTE: This is also used as a "cleanup" function. */ | |
17101 | ||
debd256d JB |
17102 | static void |
17103 | free_line_header (struct line_header *lh) | |
17104 | { | |
17105 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 17106 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
17107 | |
17108 | /* Remember that all the lh->file_names[i].name pointers are | |
17109 | pointers into debug_line_buffer, and don't need to be freed. */ | |
17110 | if (lh->file_names) | |
a8bc7b56 | 17111 | xfree (lh->file_names); |
debd256d JB |
17112 | |
17113 | /* Similarly for the include directory names. */ | |
17114 | if (lh->include_dirs) | |
a8bc7b56 | 17115 | xfree (lh->include_dirs); |
debd256d | 17116 | |
a8bc7b56 | 17117 | xfree (lh); |
debd256d JB |
17118 | } |
17119 | ||
527f3840 JK |
17120 | /* Stub for free_line_header to match void * callback types. */ |
17121 | ||
17122 | static void | |
17123 | free_line_header_voidp (void *arg) | |
17124 | { | |
17125 | struct line_header *lh = arg; | |
17126 | ||
17127 | free_line_header (lh); | |
17128 | } | |
17129 | ||
debd256d | 17130 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 17131 | |
debd256d | 17132 | static void |
d521ce57 | 17133 | add_include_dir (struct line_header *lh, const char *include_dir) |
c906108c | 17134 | { |
debd256d JB |
17135 | /* Grow the array if necessary. */ |
17136 | if (lh->include_dirs_size == 0) | |
c5aa993b | 17137 | { |
debd256d JB |
17138 | lh->include_dirs_size = 1; /* for testing */ |
17139 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
17140 | * sizeof (*lh->include_dirs)); | |
17141 | } | |
17142 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
17143 | { | |
17144 | lh->include_dirs_size *= 2; | |
17145 | lh->include_dirs = xrealloc (lh->include_dirs, | |
17146 | (lh->include_dirs_size | |
17147 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 17148 | } |
c906108c | 17149 | |
debd256d JB |
17150 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
17151 | } | |
6e70227d | 17152 | |
debd256d | 17153 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 17154 | |
debd256d JB |
17155 | static void |
17156 | add_file_name (struct line_header *lh, | |
d521ce57 | 17157 | const char *name, |
debd256d JB |
17158 | unsigned int dir_index, |
17159 | unsigned int mod_time, | |
17160 | unsigned int length) | |
17161 | { | |
17162 | struct file_entry *fe; | |
17163 | ||
17164 | /* Grow the array if necessary. */ | |
17165 | if (lh->file_names_size == 0) | |
17166 | { | |
17167 | lh->file_names_size = 1; /* for testing */ | |
17168 | lh->file_names = xmalloc (lh->file_names_size | |
17169 | * sizeof (*lh->file_names)); | |
17170 | } | |
17171 | else if (lh->num_file_names >= lh->file_names_size) | |
17172 | { | |
17173 | lh->file_names_size *= 2; | |
17174 | lh->file_names = xrealloc (lh->file_names, | |
17175 | (lh->file_names_size | |
17176 | * sizeof (*lh->file_names))); | |
17177 | } | |
17178 | ||
17179 | fe = &lh->file_names[lh->num_file_names++]; | |
17180 | fe->name = name; | |
17181 | fe->dir_index = dir_index; | |
17182 | fe->mod_time = mod_time; | |
17183 | fe->length = length; | |
aaa75496 | 17184 | fe->included_p = 0; |
cb1df416 | 17185 | fe->symtab = NULL; |
debd256d | 17186 | } |
6e70227d | 17187 | |
36586728 TT |
17188 | /* A convenience function to find the proper .debug_line section for a |
17189 | CU. */ | |
17190 | ||
17191 | static struct dwarf2_section_info * | |
17192 | get_debug_line_section (struct dwarf2_cu *cu) | |
17193 | { | |
17194 | struct dwarf2_section_info *section; | |
17195 | ||
17196 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
17197 | DWO file. */ | |
17198 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
17199 | section = &cu->dwo_unit->dwo_file->sections.line; | |
17200 | else if (cu->per_cu->is_dwz) | |
17201 | { | |
17202 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
17203 | ||
17204 | section = &dwz->line; | |
17205 | } | |
17206 | else | |
17207 | section = &dwarf2_per_objfile->line; | |
17208 | ||
17209 | return section; | |
17210 | } | |
17211 | ||
debd256d | 17212 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 17213 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 17214 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
17215 | Returns NULL if there is a problem reading the header, e.g., if it |
17216 | has a version we don't understand. | |
debd256d JB |
17217 | |
17218 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
17219 | the returned object point into the dwarf line section buffer, |
17220 | and must not be freed. */ | |
ae2de4f8 | 17221 | |
debd256d | 17222 | static struct line_header * |
3019eac3 | 17223 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
17224 | { |
17225 | struct cleanup *back_to; | |
17226 | struct line_header *lh; | |
d521ce57 | 17227 | const gdb_byte *line_ptr; |
c764a876 | 17228 | unsigned int bytes_read, offset_size; |
debd256d | 17229 | int i; |
d521ce57 | 17230 | const char *cur_dir, *cur_file; |
3019eac3 DE |
17231 | struct dwarf2_section_info *section; |
17232 | bfd *abfd; | |
17233 | ||
36586728 | 17234 | section = get_debug_line_section (cu); |
3019eac3 DE |
17235 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
17236 | if (section->buffer == NULL) | |
debd256d | 17237 | { |
3019eac3 DE |
17238 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
17239 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
17240 | else | |
17241 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
17242 | return 0; |
17243 | } | |
17244 | ||
fceca515 DE |
17245 | /* We can't do this until we know the section is non-empty. |
17246 | Only then do we know we have such a section. */ | |
a32a8923 | 17247 | abfd = get_section_bfd_owner (section); |
fceca515 | 17248 | |
a738430d MK |
17249 | /* Make sure that at least there's room for the total_length field. |
17250 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 17251 | if (offset + 4 >= section->size) |
debd256d | 17252 | { |
4d3c2250 | 17253 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
17254 | return 0; |
17255 | } | |
17256 | ||
17257 | lh = xmalloc (sizeof (*lh)); | |
17258 | memset (lh, 0, sizeof (*lh)); | |
17259 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
17260 | (void *) lh); | |
17261 | ||
527f3840 JK |
17262 | lh->offset.sect_off = offset; |
17263 | lh->offset_in_dwz = cu->per_cu->is_dwz; | |
17264 | ||
3019eac3 | 17265 | line_ptr = section->buffer + offset; |
debd256d | 17266 | |
a738430d | 17267 | /* Read in the header. */ |
6e70227d | 17268 | lh->total_length = |
c764a876 DE |
17269 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
17270 | &bytes_read, &offset_size); | |
debd256d | 17271 | line_ptr += bytes_read; |
3019eac3 | 17272 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 17273 | { |
4d3c2250 | 17274 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
2f324bf6 | 17275 | do_cleanups (back_to); |
debd256d JB |
17276 | return 0; |
17277 | } | |
17278 | lh->statement_program_end = line_ptr + lh->total_length; | |
17279 | lh->version = read_2_bytes (abfd, line_ptr); | |
17280 | line_ptr += 2; | |
cd366ee8 DE |
17281 | if (lh->version > 4) |
17282 | { | |
17283 | /* This is a version we don't understand. The format could have | |
17284 | changed in ways we don't handle properly so just punt. */ | |
17285 | complaint (&symfile_complaints, | |
17286 | _("unsupported version in .debug_line section")); | |
17287 | return NULL; | |
17288 | } | |
c764a876 DE |
17289 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
17290 | line_ptr += offset_size; | |
debd256d JB |
17291 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
17292 | line_ptr += 1; | |
2dc7f7b3 TT |
17293 | if (lh->version >= 4) |
17294 | { | |
17295 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
17296 | line_ptr += 1; | |
17297 | } | |
17298 | else | |
17299 | lh->maximum_ops_per_instruction = 1; | |
17300 | ||
17301 | if (lh->maximum_ops_per_instruction == 0) | |
17302 | { | |
17303 | lh->maximum_ops_per_instruction = 1; | |
17304 | complaint (&symfile_complaints, | |
3e43a32a MS |
17305 | _("invalid maximum_ops_per_instruction " |
17306 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
17307 | } |
17308 | ||
debd256d JB |
17309 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
17310 | line_ptr += 1; | |
17311 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
17312 | line_ptr += 1; | |
17313 | lh->line_range = read_1_byte (abfd, line_ptr); | |
17314 | line_ptr += 1; | |
17315 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
17316 | line_ptr += 1; | |
17317 | lh->standard_opcode_lengths | |
fe1b8b76 | 17318 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
17319 | |
17320 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
17321 | for (i = 1; i < lh->opcode_base; ++i) | |
17322 | { | |
17323 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
17324 | line_ptr += 1; | |
17325 | } | |
17326 | ||
a738430d | 17327 | /* Read directory table. */ |
9b1c24c8 | 17328 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
17329 | { |
17330 | line_ptr += bytes_read; | |
17331 | add_include_dir (lh, cur_dir); | |
17332 | } | |
17333 | line_ptr += bytes_read; | |
17334 | ||
a738430d | 17335 | /* Read file name table. */ |
9b1c24c8 | 17336 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
17337 | { |
17338 | unsigned int dir_index, mod_time, length; | |
17339 | ||
17340 | line_ptr += bytes_read; | |
17341 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17342 | line_ptr += bytes_read; | |
17343 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17344 | line_ptr += bytes_read; | |
17345 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17346 | line_ptr += bytes_read; | |
17347 | ||
17348 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
17349 | } | |
17350 | line_ptr += bytes_read; | |
6e70227d | 17351 | lh->statement_program_start = line_ptr; |
debd256d | 17352 | |
3019eac3 | 17353 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 17354 | complaint (&symfile_complaints, |
3e43a32a MS |
17355 | _("line number info header doesn't " |
17356 | "fit in `.debug_line' section")); | |
debd256d JB |
17357 | |
17358 | discard_cleanups (back_to); | |
17359 | return lh; | |
17360 | } | |
c906108c | 17361 | |
c6da4cef DE |
17362 | /* Subroutine of dwarf_decode_lines to simplify it. |
17363 | Return the file name of the psymtab for included file FILE_INDEX | |
17364 | in line header LH of PST. | |
17365 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17366 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
17367 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
17368 | ||
17369 | The function creates dangling cleanup registration. */ | |
c6da4cef | 17370 | |
d521ce57 | 17371 | static const char * |
c6da4cef DE |
17372 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
17373 | const struct partial_symtab *pst, | |
17374 | const char *comp_dir) | |
17375 | { | |
17376 | const struct file_entry fe = lh->file_names [file_index]; | |
d521ce57 TT |
17377 | const char *include_name = fe.name; |
17378 | const char *include_name_to_compare = include_name; | |
17379 | const char *dir_name = NULL; | |
72b9f47f TT |
17380 | const char *pst_filename; |
17381 | char *copied_name = NULL; | |
c6da4cef DE |
17382 | int file_is_pst; |
17383 | ||
17384 | if (fe.dir_index) | |
17385 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
17386 | ||
17387 | if (!IS_ABSOLUTE_PATH (include_name) | |
17388 | && (dir_name != NULL || comp_dir != NULL)) | |
17389 | { | |
17390 | /* Avoid creating a duplicate psymtab for PST. | |
17391 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
17392 | Before we do the comparison, however, we need to account | |
17393 | for DIR_NAME and COMP_DIR. | |
17394 | First prepend dir_name (if non-NULL). If we still don't | |
17395 | have an absolute path prepend comp_dir (if non-NULL). | |
17396 | However, the directory we record in the include-file's | |
17397 | psymtab does not contain COMP_DIR (to match the | |
17398 | corresponding symtab(s)). | |
17399 | ||
17400 | Example: | |
17401 | ||
17402 | bash$ cd /tmp | |
17403 | bash$ gcc -g ./hello.c | |
17404 | include_name = "hello.c" | |
17405 | dir_name = "." | |
17406 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
17407 | DW_AT_name = "./hello.c" |
17408 | ||
17409 | */ | |
c6da4cef DE |
17410 | |
17411 | if (dir_name != NULL) | |
17412 | { | |
d521ce57 TT |
17413 | char *tem = concat (dir_name, SLASH_STRING, |
17414 | include_name, (char *)NULL); | |
17415 | ||
17416 | make_cleanup (xfree, tem); | |
17417 | include_name = tem; | |
c6da4cef | 17418 | include_name_to_compare = include_name; |
c6da4cef DE |
17419 | } |
17420 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
17421 | { | |
d521ce57 TT |
17422 | char *tem = concat (comp_dir, SLASH_STRING, |
17423 | include_name, (char *)NULL); | |
17424 | ||
17425 | make_cleanup (xfree, tem); | |
17426 | include_name_to_compare = tem; | |
c6da4cef DE |
17427 | } |
17428 | } | |
17429 | ||
17430 | pst_filename = pst->filename; | |
17431 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
17432 | { | |
72b9f47f TT |
17433 | copied_name = concat (pst->dirname, SLASH_STRING, |
17434 | pst_filename, (char *)NULL); | |
17435 | pst_filename = copied_name; | |
c6da4cef DE |
17436 | } |
17437 | ||
1e3fad37 | 17438 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 17439 | |
72b9f47f TT |
17440 | if (copied_name != NULL) |
17441 | xfree (copied_name); | |
c6da4cef DE |
17442 | |
17443 | if (file_is_pst) | |
17444 | return NULL; | |
17445 | return include_name; | |
17446 | } | |
17447 | ||
c91513d8 PP |
17448 | /* Ignore this record_line request. */ |
17449 | ||
17450 | static void | |
17451 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
17452 | { | |
17453 | return; | |
17454 | } | |
17455 | ||
a05a36a5 DE |
17456 | /* Return non-zero if we should add LINE to the line number table. |
17457 | LINE is the line to add, LAST_LINE is the last line that was added, | |
17458 | LAST_SUBFILE is the subfile for LAST_LINE. | |
17459 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
17460 | had a non-zero discriminator. | |
17461 | ||
17462 | We have to be careful in the presence of discriminators. | |
17463 | E.g., for this line: | |
17464 | ||
17465 | for (i = 0; i < 100000; i++); | |
17466 | ||
17467 | clang can emit four line number entries for that one line, | |
17468 | each with a different discriminator. | |
17469 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
17470 | ||
17471 | However, we want gdb to coalesce all four entries into one. | |
17472 | Otherwise the user could stepi into the middle of the line and | |
17473 | gdb would get confused about whether the pc really was in the | |
17474 | middle of the line. | |
17475 | ||
17476 | Things are further complicated by the fact that two consecutive | |
17477 | line number entries for the same line is a heuristic used by gcc | |
17478 | to denote the end of the prologue. So we can't just discard duplicate | |
17479 | entries, we have to be selective about it. The heuristic we use is | |
17480 | that we only collapse consecutive entries for the same line if at least | |
17481 | one of those entries has a non-zero discriminator. PR 17276. | |
17482 | ||
17483 | Note: Addresses in the line number state machine can never go backwards | |
17484 | within one sequence, thus this coalescing is ok. */ | |
17485 | ||
17486 | static int | |
17487 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
17488 | int line_has_non_zero_discriminator, | |
17489 | struct subfile *last_subfile) | |
17490 | { | |
17491 | if (current_subfile != last_subfile) | |
17492 | return 1; | |
17493 | if (line != last_line) | |
17494 | return 1; | |
17495 | /* Same line for the same file that we've seen already. | |
17496 | As a last check, for pr 17276, only record the line if the line | |
17497 | has never had a non-zero discriminator. */ | |
17498 | if (!line_has_non_zero_discriminator) | |
17499 | return 1; | |
17500 | return 0; | |
17501 | } | |
17502 | ||
252a6764 DE |
17503 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
17504 | in the line table of subfile SUBFILE. */ | |
17505 | ||
17506 | static void | |
17507 | dwarf_record_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
17508 | unsigned int line, CORE_ADDR address, | |
17509 | record_line_ftype p_record_line) | |
17510 | { | |
17511 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
17512 | ||
d5962de5 | 17513 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
17514 | } |
17515 | ||
17516 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
17517 | Mark the end of a set of line number records. | |
17518 | The arguments are the same as for dwarf_record_line. | |
17519 | If SUBFILE is NULL the request is ignored. */ | |
17520 | ||
17521 | static void | |
17522 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
17523 | CORE_ADDR address, record_line_ftype p_record_line) | |
17524 | { | |
17525 | if (subfile != NULL) | |
17526 | dwarf_record_line (gdbarch, subfile, 0, address, p_record_line); | |
17527 | } | |
17528 | ||
f3f5162e DE |
17529 | /* Subroutine of dwarf_decode_lines to simplify it. |
17530 | Process the line number information in LH. */ | |
debd256d | 17531 | |
c906108c | 17532 | static void |
43f3e411 DE |
17533 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
17534 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 17535 | { |
d521ce57 TT |
17536 | const gdb_byte *line_ptr, *extended_end; |
17537 | const gdb_byte *line_end; | |
a8c50c1f | 17538 | unsigned int bytes_read, extended_len; |
699ca60a | 17539 | unsigned char op_code, extended_op; |
e142c38c DJ |
17540 | CORE_ADDR baseaddr; |
17541 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 17542 | bfd *abfd = objfile->obfd; |
fbf65064 | 17543 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
f3f5162e | 17544 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
17545 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
17546 | = record_line; | |
e142c38c DJ |
17547 | |
17548 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 17549 | |
debd256d JB |
17550 | line_ptr = lh->statement_program_start; |
17551 | line_end = lh->statement_program_end; | |
c906108c SS |
17552 | |
17553 | /* Read the statement sequences until there's nothing left. */ | |
17554 | while (line_ptr < line_end) | |
17555 | { | |
3e29f34a MR |
17556 | /* State machine registers. Call `gdbarch_adjust_dwarf2_line' |
17557 | on the initial 0 address as if there was a line entry for it | |
17558 | so that the backend has a chance to adjust it and also record | |
17559 | it in case it needs it. This is currently used by MIPS code, | |
17560 | cf. `mips_adjust_dwarf2_line'. */ | |
17561 | CORE_ADDR address = gdbarch_adjust_dwarf2_line (gdbarch, 0, 0); | |
c906108c SS |
17562 | unsigned int file = 1; |
17563 | unsigned int line = 1; | |
debd256d | 17564 | int is_stmt = lh->default_is_stmt; |
c906108c | 17565 | int end_sequence = 0; |
2dc7f7b3 | 17566 | unsigned char op_index = 0; |
a05a36a5 DE |
17567 | unsigned int discriminator = 0; |
17568 | /* The last line number that was recorded, used to coalesce | |
17569 | consecutive entries for the same line. This can happen, for | |
17570 | example, when discriminators are present. PR 17276. */ | |
17571 | unsigned int last_line = 0; | |
17572 | int line_has_non_zero_discriminator = 0; | |
c906108c | 17573 | |
aaa75496 | 17574 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 17575 | { |
aaa75496 | 17576 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
17577 | /* lh->include_dirs and lh->file_names are 0-based, but the |
17578 | directory and file name numbers in the statement program | |
17579 | are 1-based. */ | |
17580 | struct file_entry *fe = &lh->file_names[file - 1]; | |
d521ce57 | 17581 | const char *dir = NULL; |
a738430d | 17582 | |
debd256d JB |
17583 | if (fe->dir_index) |
17584 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb | 17585 | |
4d663531 | 17586 | dwarf2_start_subfile (fe->name, dir); |
c906108c SS |
17587 | } |
17588 | ||
a738430d | 17589 | /* Decode the table. */ |
c5aa993b | 17590 | while (!end_sequence) |
c906108c SS |
17591 | { |
17592 | op_code = read_1_byte (abfd, line_ptr); | |
17593 | line_ptr += 1; | |
59205f5a JB |
17594 | if (line_ptr > line_end) |
17595 | { | |
17596 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
17597 | break; | |
17598 | } | |
9aa1fe7e | 17599 | |
debd256d | 17600 | if (op_code >= lh->opcode_base) |
6e70227d | 17601 | { |
8e07a239 | 17602 | /* Special opcode. */ |
699ca60a | 17603 | unsigned char adj_opcode; |
3e29f34a | 17604 | CORE_ADDR addr_adj; |
a05a36a5 | 17605 | int line_delta; |
8e07a239 | 17606 | |
debd256d | 17607 | adj_opcode = op_code - lh->opcode_base; |
3e29f34a | 17608 | addr_adj = (((op_index + (adj_opcode / lh->line_range)) |
2dc7f7b3 TT |
17609 | / lh->maximum_ops_per_instruction) |
17610 | * lh->minimum_instruction_length); | |
3e29f34a | 17611 | address += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); |
2dc7f7b3 TT |
17612 | op_index = ((op_index + (adj_opcode / lh->line_range)) |
17613 | % lh->maximum_ops_per_instruction); | |
a05a36a5 DE |
17614 | line_delta = lh->line_base + (adj_opcode % lh->line_range); |
17615 | line += line_delta; | |
17616 | if (line_delta != 0) | |
17617 | line_has_non_zero_discriminator = discriminator != 0; | |
59205f5a | 17618 | if (lh->num_file_names < file || file == 0) |
25e43795 | 17619 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
17620 | /* For now we ignore lines not starting on an |
17621 | instruction boundary. */ | |
17622 | else if (op_index == 0) | |
25e43795 DJ |
17623 | { |
17624 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 17625 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
17626 | { |
17627 | if (last_subfile != current_subfile) | |
17628 | { | |
252a6764 DE |
17629 | dwarf_finish_line (gdbarch, last_subfile, |
17630 | address, p_record_line); | |
fbf65064 | 17631 | } |
a05a36a5 DE |
17632 | if (dwarf_record_line_p (line, last_line, |
17633 | line_has_non_zero_discriminator, | |
17634 | last_subfile)) | |
17635 | { | |
17636 | dwarf_record_line (gdbarch, current_subfile, | |
17637 | line, address, p_record_line); | |
17638 | } | |
17639 | last_subfile = current_subfile; | |
17640 | last_line = line; | |
366da635 | 17641 | } |
25e43795 | 17642 | } |
a05a36a5 | 17643 | discriminator = 0; |
9aa1fe7e GK |
17644 | } |
17645 | else switch (op_code) | |
c906108c SS |
17646 | { |
17647 | case DW_LNS_extended_op: | |
3e43a32a MS |
17648 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
17649 | &bytes_read); | |
473b7be6 | 17650 | line_ptr += bytes_read; |
a8c50c1f | 17651 | extended_end = line_ptr + extended_len; |
c906108c SS |
17652 | extended_op = read_1_byte (abfd, line_ptr); |
17653 | line_ptr += 1; | |
17654 | switch (extended_op) | |
17655 | { | |
17656 | case DW_LNE_end_sequence: | |
c91513d8 | 17657 | p_record_line = record_line; |
c906108c | 17658 | end_sequence = 1; |
c906108c SS |
17659 | break; |
17660 | case DW_LNE_set_address: | |
e7c27a73 | 17661 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 | 17662 | |
c3b7b696 YQ |
17663 | /* If address < lowpc then it's not a usable value, it's |
17664 | outside the pc range of the CU. However, we restrict | |
17665 | the test to only address values of zero to preserve | |
17666 | GDB's previous behaviour which is to handle the specific | |
17667 | case of a function being GC'd by the linker. */ | |
17668 | if (address == 0 && address < lowpc) | |
c91513d8 PP |
17669 | { |
17670 | /* This line table is for a function which has been | |
17671 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
17672 | ||
17673 | long line_offset | |
36586728 | 17674 | = line_ptr - get_debug_line_section (cu)->buffer; |
c91513d8 PP |
17675 | |
17676 | complaint (&symfile_complaints, | |
17677 | _(".debug_line address at offset 0x%lx is 0 " | |
17678 | "[in module %s]"), | |
4262abfb | 17679 | line_offset, objfile_name (objfile)); |
c91513d8 | 17680 | p_record_line = noop_record_line; |
37780ee5 DE |
17681 | /* Note: p_record_line is left as noop_record_line |
17682 | until we see DW_LNE_end_sequence. */ | |
c91513d8 PP |
17683 | } |
17684 | ||
2dc7f7b3 | 17685 | op_index = 0; |
107d2387 AC |
17686 | line_ptr += bytes_read; |
17687 | address += baseaddr; | |
3e29f34a | 17688 | address = gdbarch_adjust_dwarf2_line (gdbarch, address, 0); |
c906108c SS |
17689 | break; |
17690 | case DW_LNE_define_file: | |
debd256d | 17691 | { |
d521ce57 | 17692 | const char *cur_file; |
debd256d | 17693 | unsigned int dir_index, mod_time, length; |
6e70227d | 17694 | |
3e43a32a MS |
17695 | cur_file = read_direct_string (abfd, line_ptr, |
17696 | &bytes_read); | |
debd256d JB |
17697 | line_ptr += bytes_read; |
17698 | dir_index = | |
17699 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17700 | line_ptr += bytes_read; | |
17701 | mod_time = | |
17702 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17703 | line_ptr += bytes_read; | |
17704 | length = | |
17705 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17706 | line_ptr += bytes_read; | |
17707 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
17708 | } | |
c906108c | 17709 | break; |
d0c6ba3d CC |
17710 | case DW_LNE_set_discriminator: |
17711 | /* The discriminator is not interesting to the debugger; | |
a05a36a5 DE |
17712 | just ignore it. We still need to check its value though: |
17713 | if there are consecutive entries for the same | |
17714 | (non-prologue) line we want to coalesce them. | |
17715 | PR 17276. */ | |
17716 | discriminator = read_unsigned_leb128 (abfd, line_ptr, | |
17717 | &bytes_read); | |
17718 | line_has_non_zero_discriminator |= discriminator != 0; | |
17719 | line_ptr += bytes_read; | |
d0c6ba3d | 17720 | break; |
c906108c | 17721 | default: |
4d3c2250 | 17722 | complaint (&symfile_complaints, |
e2e0b3e5 | 17723 | _("mangled .debug_line section")); |
debd256d | 17724 | return; |
c906108c | 17725 | } |
a8c50c1f DJ |
17726 | /* Make sure that we parsed the extended op correctly. If e.g. |
17727 | we expected a different address size than the producer used, | |
17728 | we may have read the wrong number of bytes. */ | |
17729 | if (line_ptr != extended_end) | |
17730 | { | |
17731 | complaint (&symfile_complaints, | |
17732 | _("mangled .debug_line section")); | |
17733 | return; | |
17734 | } | |
c906108c SS |
17735 | break; |
17736 | case DW_LNS_copy: | |
59205f5a | 17737 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
17738 | dwarf2_debug_line_missing_file_complaint (); |
17739 | else | |
366da635 | 17740 | { |
25e43795 | 17741 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 17742 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
17743 | { |
17744 | if (last_subfile != current_subfile) | |
17745 | { | |
252a6764 DE |
17746 | dwarf_finish_line (gdbarch, last_subfile, |
17747 | address, p_record_line); | |
fbf65064 | 17748 | } |
a05a36a5 DE |
17749 | if (dwarf_record_line_p (line, last_line, |
17750 | line_has_non_zero_discriminator, | |
17751 | last_subfile)) | |
17752 | { | |
17753 | dwarf_record_line (gdbarch, current_subfile, | |
17754 | line, address, p_record_line); | |
17755 | } | |
17756 | last_subfile = current_subfile; | |
17757 | last_line = line; | |
fbf65064 | 17758 | } |
366da635 | 17759 | } |
a05a36a5 | 17760 | discriminator = 0; |
c906108c SS |
17761 | break; |
17762 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
17763 | { |
17764 | CORE_ADDR adjust | |
17765 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
3e29f34a | 17766 | CORE_ADDR addr_adj; |
2dc7f7b3 | 17767 | |
3e29f34a | 17768 | addr_adj = (((op_index + adjust) |
2dc7f7b3 TT |
17769 | / lh->maximum_ops_per_instruction) |
17770 | * lh->minimum_instruction_length); | |
3e29f34a | 17771 | address += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); |
2dc7f7b3 TT |
17772 | op_index = ((op_index + adjust) |
17773 | % lh->maximum_ops_per_instruction); | |
17774 | line_ptr += bytes_read; | |
17775 | } | |
c906108c SS |
17776 | break; |
17777 | case DW_LNS_advance_line: | |
a05a36a5 DE |
17778 | { |
17779 | int line_delta | |
17780 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
17781 | ||
17782 | line += line_delta; | |
17783 | if (line_delta != 0) | |
17784 | line_has_non_zero_discriminator = discriminator != 0; | |
17785 | line_ptr += bytes_read; | |
17786 | } | |
c906108c SS |
17787 | break; |
17788 | case DW_LNS_set_file: | |
debd256d | 17789 | { |
a738430d MK |
17790 | /* The arrays lh->include_dirs and lh->file_names are |
17791 | 0-based, but the directory and file name numbers in | |
17792 | the statement program are 1-based. */ | |
debd256d | 17793 | struct file_entry *fe; |
d521ce57 | 17794 | const char *dir = NULL; |
a738430d | 17795 | |
debd256d JB |
17796 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
17797 | line_ptr += bytes_read; | |
59205f5a | 17798 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
17799 | dwarf2_debug_line_missing_file_complaint (); |
17800 | else | |
17801 | { | |
17802 | fe = &lh->file_names[file - 1]; | |
17803 | if (fe->dir_index) | |
17804 | dir = lh->include_dirs[fe->dir_index - 1]; | |
17805 | if (!decode_for_pst_p) | |
17806 | { | |
17807 | last_subfile = current_subfile; | |
a05a36a5 | 17808 | line_has_non_zero_discriminator = discriminator != 0; |
4d663531 | 17809 | dwarf2_start_subfile (fe->name, dir); |
25e43795 DJ |
17810 | } |
17811 | } | |
debd256d | 17812 | } |
c906108c SS |
17813 | break; |
17814 | case DW_LNS_set_column: | |
0ad93d4f | 17815 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
17816 | line_ptr += bytes_read; |
17817 | break; | |
17818 | case DW_LNS_negate_stmt: | |
17819 | is_stmt = (!is_stmt); | |
17820 | break; | |
17821 | case DW_LNS_set_basic_block: | |
c906108c | 17822 | break; |
c2c6d25f JM |
17823 | /* Add to the address register of the state machine the |
17824 | address increment value corresponding to special opcode | |
a738430d MK |
17825 | 255. I.e., this value is scaled by the minimum |
17826 | instruction length since special opcode 255 would have | |
b021a221 | 17827 | scaled the increment. */ |
c906108c | 17828 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
17829 | { |
17830 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
3e29f34a | 17831 | CORE_ADDR addr_adj; |
2dc7f7b3 | 17832 | |
3e29f34a | 17833 | addr_adj = (((op_index + adjust) |
2dc7f7b3 TT |
17834 | / lh->maximum_ops_per_instruction) |
17835 | * lh->minimum_instruction_length); | |
3e29f34a | 17836 | address += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); |
2dc7f7b3 TT |
17837 | op_index = ((op_index + adjust) |
17838 | % lh->maximum_ops_per_instruction); | |
17839 | } | |
c906108c SS |
17840 | break; |
17841 | case DW_LNS_fixed_advance_pc: | |
3e29f34a MR |
17842 | { |
17843 | CORE_ADDR addr_adj; | |
17844 | ||
17845 | addr_adj = read_2_bytes (abfd, line_ptr); | |
17846 | address += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
17847 | op_index = 0; | |
17848 | line_ptr += 2; | |
17849 | } | |
c906108c | 17850 | break; |
9aa1fe7e | 17851 | default: |
a738430d MK |
17852 | { |
17853 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 17854 | int i; |
a738430d | 17855 | |
debd256d | 17856 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
17857 | { |
17858 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17859 | line_ptr += bytes_read; | |
17860 | } | |
17861 | } | |
c906108c SS |
17862 | } |
17863 | } | |
59205f5a JB |
17864 | if (lh->num_file_names < file || file == 0) |
17865 | dwarf2_debug_line_missing_file_complaint (); | |
17866 | else | |
17867 | { | |
17868 | lh->file_names[file - 1].included_p = 1; | |
17869 | if (!decode_for_pst_p) | |
fbf65064 | 17870 | { |
252a6764 DE |
17871 | dwarf_finish_line (gdbarch, current_subfile, address, |
17872 | p_record_line); | |
fbf65064 | 17873 | } |
59205f5a | 17874 | } |
c906108c | 17875 | } |
f3f5162e DE |
17876 | } |
17877 | ||
17878 | /* Decode the Line Number Program (LNP) for the given line_header | |
17879 | structure and CU. The actual information extracted and the type | |
17880 | of structures created from the LNP depends on the value of PST. | |
17881 | ||
17882 | 1. If PST is NULL, then this procedure uses the data from the program | |
17883 | to create all necessary symbol tables, and their linetables. | |
17884 | ||
17885 | 2. If PST is not NULL, this procedure reads the program to determine | |
17886 | the list of files included by the unit represented by PST, and | |
17887 | builds all the associated partial symbol tables. | |
17888 | ||
17889 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17890 | It is used for relative paths in the line table. | |
17891 | NOTE: When processing partial symtabs (pst != NULL), | |
17892 | comp_dir == pst->dirname. | |
17893 | ||
17894 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
17895 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
17896 | symtab we don't use it in the name of the psymtabs we create. | |
17897 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
17898 | A good testcase for this is mb-inline.exp. |
17899 | ||
527f3840 JK |
17900 | LOWPC is the lowest address in CU (or 0 if not known). |
17901 | ||
17902 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
17903 | for its PC<->lines mapping information. Otherwise only the filename | |
17904 | table is read in. */ | |
f3f5162e DE |
17905 | |
17906 | static void | |
17907 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 17908 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 17909 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e DE |
17910 | { |
17911 | struct objfile *objfile = cu->objfile; | |
17912 | const int decode_for_pst_p = (pst != NULL); | |
f3f5162e | 17913 | |
527f3840 JK |
17914 | if (decode_mapping) |
17915 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
17916 | |
17917 | if (decode_for_pst_p) | |
17918 | { | |
17919 | int file_index; | |
17920 | ||
17921 | /* Now that we're done scanning the Line Header Program, we can | |
17922 | create the psymtab of each included file. */ | |
17923 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
17924 | if (lh->file_names[file_index].included_p == 1) | |
17925 | { | |
d521ce57 | 17926 | const char *include_name = |
c6da4cef DE |
17927 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
17928 | if (include_name != NULL) | |
aaa75496 JB |
17929 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
17930 | } | |
17931 | } | |
cb1df416 DJ |
17932 | else |
17933 | { | |
17934 | /* Make sure a symtab is created for every file, even files | |
17935 | which contain only variables (i.e. no code with associated | |
17936 | line numbers). */ | |
43f3e411 | 17937 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 17938 | int i; |
cb1df416 DJ |
17939 | |
17940 | for (i = 0; i < lh->num_file_names; i++) | |
17941 | { | |
d521ce57 | 17942 | const char *dir = NULL; |
f3f5162e | 17943 | struct file_entry *fe; |
9a619af0 | 17944 | |
cb1df416 DJ |
17945 | fe = &lh->file_names[i]; |
17946 | if (fe->dir_index) | |
17947 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4d663531 | 17948 | dwarf2_start_subfile (fe->name, dir); |
cb1df416 | 17949 | |
cb1df416 | 17950 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
17951 | { |
17952 | current_subfile->symtab | |
17953 | = allocate_symtab (cust, current_subfile->name); | |
17954 | } | |
cb1df416 DJ |
17955 | fe->symtab = current_subfile->symtab; |
17956 | } | |
17957 | } | |
c906108c SS |
17958 | } |
17959 | ||
17960 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
17961 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 17962 | or NULL if not known. |
c906108c SS |
17963 | This routine tries to keep line numbers from identical absolute and |
17964 | relative file names in a common subfile. | |
17965 | ||
17966 | Using the `list' example from the GDB testsuite, which resides in | |
17967 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
17968 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
17969 | ||
c5aa993b | 17970 | DW_AT_name: /srcdir/list0.c |
4d663531 | 17971 | DW_AT_comp_dir: /compdir |
357e46e7 | 17972 | files.files[0].name: list0.h |
c5aa993b | 17973 | files.files[0].dir: /srcdir |
357e46e7 | 17974 | files.files[1].name: list0.c |
c5aa993b | 17975 | files.files[1].dir: /srcdir |
c906108c SS |
17976 | |
17977 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
17978 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
17979 | start_subfile will ensure that this happens provided that we pass the | |
17980 | concatenation of files.files[1].dir and files.files[1].name as the | |
17981 | subfile's name. */ | |
c906108c SS |
17982 | |
17983 | static void | |
4d663531 | 17984 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 17985 | { |
d521ce57 | 17986 | char *copy = NULL; |
4f1520fb | 17987 | |
4d663531 | 17988 | /* In order not to lose the line information directory, |
4f1520fb FR |
17989 | we concatenate it to the filename when it makes sense. |
17990 | Note that the Dwarf3 standard says (speaking of filenames in line | |
17991 | information): ``The directory index is ignored for file names | |
17992 | that represent full path names''. Thus ignoring dirname in the | |
17993 | `else' branch below isn't an issue. */ | |
c906108c | 17994 | |
d5166ae1 | 17995 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
17996 | { |
17997 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
17998 | filename = copy; | |
17999 | } | |
c906108c | 18000 | |
4d663531 | 18001 | start_subfile (filename); |
4f1520fb | 18002 | |
d521ce57 TT |
18003 | if (copy != NULL) |
18004 | xfree (copy); | |
c906108c SS |
18005 | } |
18006 | ||
f4dc4d17 DE |
18007 | /* Start a symtab for DWARF. |
18008 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
18009 | ||
43f3e411 | 18010 | static struct compunit_symtab * |
f4dc4d17 | 18011 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 18012 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 18013 | { |
43f3e411 DE |
18014 | struct compunit_symtab *cust |
18015 | = start_symtab (cu->objfile, name, comp_dir, low_pc); | |
18016 | ||
f4dc4d17 DE |
18017 | record_debugformat ("DWARF 2"); |
18018 | record_producer (cu->producer); | |
18019 | ||
18020 | /* We assume that we're processing GCC output. */ | |
18021 | processing_gcc_compilation = 2; | |
18022 | ||
4d4ec4e5 | 18023 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
18024 | |
18025 | return cust; | |
f4dc4d17 DE |
18026 | } |
18027 | ||
4c2df51b DJ |
18028 | static void |
18029 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 18030 | struct dwarf2_cu *cu) |
4c2df51b | 18031 | { |
e7c27a73 DJ |
18032 | struct objfile *objfile = cu->objfile; |
18033 | struct comp_unit_head *cu_header = &cu->header; | |
18034 | ||
4c2df51b DJ |
18035 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
18036 | code here to turn a symbol with DW_AT_external and a | |
18037 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
18038 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
18039 | with some versions of binutils) where shared libraries could have | |
18040 | relocations against symbols in their debug information - the | |
18041 | minimal symbol would have the right address, but the debug info | |
18042 | would not. It's no longer necessary, because we will explicitly | |
18043 | apply relocations when we read in the debug information now. */ | |
18044 | ||
18045 | /* A DW_AT_location attribute with no contents indicates that a | |
18046 | variable has been optimized away. */ | |
18047 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
18048 | { | |
f1e6e072 | 18049 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
18050 | return; |
18051 | } | |
18052 | ||
18053 | /* Handle one degenerate form of location expression specially, to | |
18054 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
18055 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
18056 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
18057 | |
18058 | if (attr_form_is_block (attr) | |
3019eac3 DE |
18059 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
18060 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
18061 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
18062 | && (DW_BLOCK (attr)->size | |
18063 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 18064 | { |
891d2f0b | 18065 | unsigned int dummy; |
4c2df51b | 18066 | |
3019eac3 DE |
18067 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
18068 | SYMBOL_VALUE_ADDRESS (sym) = | |
18069 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
18070 | else | |
18071 | SYMBOL_VALUE_ADDRESS (sym) = | |
18072 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 18073 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
18074 | fixup_symbol_section (sym, objfile); |
18075 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
18076 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
18077 | return; |
18078 | } | |
18079 | ||
18080 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
18081 | expression evaluator, and use LOC_COMPUTED only when necessary | |
18082 | (i.e. when the value of a register or memory location is | |
18083 | referenced, or a thread-local block, etc.). Then again, it might | |
18084 | not be worthwhile. I'm assuming that it isn't unless performance | |
18085 | or memory numbers show me otherwise. */ | |
18086 | ||
f1e6e072 | 18087 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 18088 | |
f1e6e072 | 18089 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 18090 | cu->has_loclist = 1; |
4c2df51b DJ |
18091 | } |
18092 | ||
c906108c SS |
18093 | /* Given a pointer to a DWARF information entry, figure out if we need |
18094 | to make a symbol table entry for it, and if so, create a new entry | |
18095 | and return a pointer to it. | |
18096 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
18097 | used the passed type. |
18098 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
18099 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
18100 | |
18101 | static struct symbol * | |
34eaf542 TT |
18102 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
18103 | struct symbol *space) | |
c906108c | 18104 | { |
e7c27a73 | 18105 | struct objfile *objfile = cu->objfile; |
3e29f34a | 18106 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 18107 | struct symbol *sym = NULL; |
15d034d0 | 18108 | const char *name; |
c906108c SS |
18109 | struct attribute *attr = NULL; |
18110 | struct attribute *attr2 = NULL; | |
e142c38c | 18111 | CORE_ADDR baseaddr; |
e37fd15a SW |
18112 | struct pending **list_to_add = NULL; |
18113 | ||
edb3359d | 18114 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
18115 | |
18116 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 18117 | |
94af9270 | 18118 | name = dwarf2_name (die, cu); |
c906108c SS |
18119 | if (name) |
18120 | { | |
94af9270 | 18121 | const char *linkagename; |
34eaf542 | 18122 | int suppress_add = 0; |
94af9270 | 18123 | |
34eaf542 TT |
18124 | if (space) |
18125 | sym = space; | |
18126 | else | |
e623cf5d | 18127 | sym = allocate_symbol (objfile); |
c906108c | 18128 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
18129 | |
18130 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 18131 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
18132 | linkagename = dwarf2_physname (name, die, cu); |
18133 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 18134 | |
f55ee35c JK |
18135 | /* Fortran does not have mangling standard and the mangling does differ |
18136 | between gfortran, iFort etc. */ | |
18137 | if (cu->language == language_fortran | |
b250c185 | 18138 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 18139 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 18140 | dwarf2_full_name (name, die, cu), |
29df156d | 18141 | NULL); |
f55ee35c | 18142 | |
c906108c | 18143 | /* Default assumptions. |
c5aa993b | 18144 | Use the passed type or decode it from the die. */ |
176620f1 | 18145 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 18146 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
18147 | if (type != NULL) |
18148 | SYMBOL_TYPE (sym) = type; | |
18149 | else | |
e7c27a73 | 18150 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
18151 | attr = dwarf2_attr (die, |
18152 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
18153 | cu); | |
c906108c SS |
18154 | if (attr) |
18155 | { | |
18156 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
18157 | } | |
cb1df416 | 18158 | |
edb3359d DJ |
18159 | attr = dwarf2_attr (die, |
18160 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
18161 | cu); | |
cb1df416 DJ |
18162 | if (attr) |
18163 | { | |
18164 | int file_index = DW_UNSND (attr); | |
9a619af0 | 18165 | |
cb1df416 DJ |
18166 | if (cu->line_header == NULL |
18167 | || file_index > cu->line_header->num_file_names) | |
18168 | complaint (&symfile_complaints, | |
18169 | _("file index out of range")); | |
1c3d648d | 18170 | else if (file_index > 0) |
cb1df416 DJ |
18171 | { |
18172 | struct file_entry *fe; | |
9a619af0 | 18173 | |
cb1df416 | 18174 | fe = &cu->line_header->file_names[file_index - 1]; |
08be3fe3 | 18175 | symbol_set_symtab (sym, fe->symtab); |
cb1df416 DJ |
18176 | } |
18177 | } | |
18178 | ||
c906108c SS |
18179 | switch (die->tag) |
18180 | { | |
18181 | case DW_TAG_label: | |
e142c38c | 18182 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 18183 | if (attr) |
3e29f34a MR |
18184 | { |
18185 | CORE_ADDR addr; | |
18186 | ||
18187 | addr = attr_value_as_address (attr); | |
18188 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
18189 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
18190 | } | |
0f5238ed TT |
18191 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
18192 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 18193 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 18194 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
18195 | break; |
18196 | case DW_TAG_subprogram: | |
18197 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18198 | finish_block. */ | |
f1e6e072 | 18199 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 18200 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
18201 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
18202 | || cu->language == language_ada) | |
c906108c | 18203 | { |
2cfa0c8d JB |
18204 | /* Subprograms marked external are stored as a global symbol. |
18205 | Ada subprograms, whether marked external or not, are always | |
18206 | stored as a global symbol, because we want to be able to | |
18207 | access them globally. For instance, we want to be able | |
18208 | to break on a nested subprogram without having to | |
18209 | specify the context. */ | |
e37fd15a | 18210 | list_to_add = &global_symbols; |
c906108c SS |
18211 | } |
18212 | else | |
18213 | { | |
e37fd15a | 18214 | list_to_add = cu->list_in_scope; |
c906108c SS |
18215 | } |
18216 | break; | |
edb3359d DJ |
18217 | case DW_TAG_inlined_subroutine: |
18218 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18219 | finish_block. */ | |
f1e6e072 | 18220 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 18221 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 18222 | list_to_add = cu->list_in_scope; |
edb3359d | 18223 | break; |
34eaf542 TT |
18224 | case DW_TAG_template_value_param: |
18225 | suppress_add = 1; | |
18226 | /* Fall through. */ | |
72929c62 | 18227 | case DW_TAG_constant: |
c906108c | 18228 | case DW_TAG_variable: |
254e6b9e | 18229 | case DW_TAG_member: |
0963b4bd MS |
18230 | /* Compilation with minimal debug info may result in |
18231 | variables with missing type entries. Change the | |
18232 | misleading `void' type to something sensible. */ | |
c906108c | 18233 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 18234 | SYMBOL_TYPE (sym) |
46bf5051 | 18235 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 18236 | |
e142c38c | 18237 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
18238 | /* In the case of DW_TAG_member, we should only be called for |
18239 | static const members. */ | |
18240 | if (die->tag == DW_TAG_member) | |
18241 | { | |
3863f96c DE |
18242 | /* dwarf2_add_field uses die_is_declaration, |
18243 | so we do the same. */ | |
254e6b9e DE |
18244 | gdb_assert (die_is_declaration (die, cu)); |
18245 | gdb_assert (attr); | |
18246 | } | |
c906108c SS |
18247 | if (attr) |
18248 | { | |
e7c27a73 | 18249 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 18250 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 18251 | if (!suppress_add) |
34eaf542 TT |
18252 | { |
18253 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 18254 | list_to_add = &global_symbols; |
34eaf542 | 18255 | else |
e37fd15a | 18256 | list_to_add = cu->list_in_scope; |
34eaf542 | 18257 | } |
c906108c SS |
18258 | break; |
18259 | } | |
e142c38c | 18260 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
18261 | if (attr) |
18262 | { | |
e7c27a73 | 18263 | var_decode_location (attr, sym, cu); |
e142c38c | 18264 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
18265 | |
18266 | /* Fortran explicitly imports any global symbols to the local | |
18267 | scope by DW_TAG_common_block. */ | |
18268 | if (cu->language == language_fortran && die->parent | |
18269 | && die->parent->tag == DW_TAG_common_block) | |
18270 | attr2 = NULL; | |
18271 | ||
caac4577 JG |
18272 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
18273 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
18274 | && !dwarf2_per_objfile->has_section_at_zero) | |
18275 | { | |
18276 | /* When a static variable is eliminated by the linker, | |
18277 | the corresponding debug information is not stripped | |
18278 | out, but the variable address is set to null; | |
18279 | do not add such variables into symbol table. */ | |
18280 | } | |
18281 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 18282 | { |
f55ee35c JK |
18283 | /* Workaround gfortran PR debug/40040 - it uses |
18284 | DW_AT_location for variables in -fPIC libraries which may | |
18285 | get overriden by other libraries/executable and get | |
18286 | a different address. Resolve it by the minimal symbol | |
18287 | which may come from inferior's executable using copy | |
18288 | relocation. Make this workaround only for gfortran as for | |
18289 | other compilers GDB cannot guess the minimal symbol | |
18290 | Fortran mangling kind. */ | |
18291 | if (cu->language == language_fortran && die->parent | |
18292 | && die->parent->tag == DW_TAG_module | |
18293 | && cu->producer | |
61012eef | 18294 | && startswith (cu->producer, "GNU Fortran ")) |
f1e6e072 | 18295 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 18296 | |
1c809c68 TT |
18297 | /* A variable with DW_AT_external is never static, |
18298 | but it may be block-scoped. */ | |
18299 | list_to_add = (cu->list_in_scope == &file_symbols | |
18300 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 18301 | } |
c906108c | 18302 | else |
e37fd15a | 18303 | list_to_add = cu->list_in_scope; |
c906108c SS |
18304 | } |
18305 | else | |
18306 | { | |
18307 | /* We do not know the address of this symbol. | |
c5aa993b JM |
18308 | If it is an external symbol and we have type information |
18309 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
18310 | The address of the variable will then be determined from | |
18311 | the minimal symbol table whenever the variable is | |
18312 | referenced. */ | |
e142c38c | 18313 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
18314 | |
18315 | /* Fortran explicitly imports any global symbols to the local | |
18316 | scope by DW_TAG_common_block. */ | |
18317 | if (cu->language == language_fortran && die->parent | |
18318 | && die->parent->tag == DW_TAG_common_block) | |
18319 | { | |
18320 | /* SYMBOL_CLASS doesn't matter here because | |
18321 | read_common_block is going to reset it. */ | |
18322 | if (!suppress_add) | |
18323 | list_to_add = cu->list_in_scope; | |
18324 | } | |
18325 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
18326 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 18327 | { |
0fe7935b DJ |
18328 | /* A variable with DW_AT_external is never static, but it |
18329 | may be block-scoped. */ | |
18330 | list_to_add = (cu->list_in_scope == &file_symbols | |
18331 | ? &global_symbols : cu->list_in_scope); | |
18332 | ||
f1e6e072 | 18333 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 18334 | } |
442ddf59 JK |
18335 | else if (!die_is_declaration (die, cu)) |
18336 | { | |
18337 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
18338 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
18339 | if (!suppress_add) |
18340 | list_to_add = cu->list_in_scope; | |
442ddf59 | 18341 | } |
c906108c SS |
18342 | } |
18343 | break; | |
18344 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
18345 | /* If we are inside a function, mark this as an argument. If |
18346 | not, we might be looking at an argument to an inlined function | |
18347 | when we do not have enough information to show inlined frames; | |
18348 | pretend it's a local variable in that case so that the user can | |
18349 | still see it. */ | |
18350 | if (context_stack_depth > 0 | |
18351 | && context_stack[context_stack_depth - 1].name != NULL) | |
18352 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 18353 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
18354 | if (attr) |
18355 | { | |
e7c27a73 | 18356 | var_decode_location (attr, sym, cu); |
c906108c | 18357 | } |
e142c38c | 18358 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
18359 | if (attr) |
18360 | { | |
e7c27a73 | 18361 | dwarf2_const_value (attr, sym, cu); |
c906108c | 18362 | } |
f346a30d | 18363 | |
e37fd15a | 18364 | list_to_add = cu->list_in_scope; |
c906108c SS |
18365 | break; |
18366 | case DW_TAG_unspecified_parameters: | |
18367 | /* From varargs functions; gdb doesn't seem to have any | |
18368 | interest in this information, so just ignore it for now. | |
18369 | (FIXME?) */ | |
18370 | break; | |
34eaf542 TT |
18371 | case DW_TAG_template_type_param: |
18372 | suppress_add = 1; | |
18373 | /* Fall through. */ | |
c906108c | 18374 | case DW_TAG_class_type: |
680b30c7 | 18375 | case DW_TAG_interface_type: |
c906108c SS |
18376 | case DW_TAG_structure_type: |
18377 | case DW_TAG_union_type: | |
72019c9c | 18378 | case DW_TAG_set_type: |
c906108c | 18379 | case DW_TAG_enumeration_type: |
f1e6e072 | 18380 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 18381 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 18382 | |
63d06c5c | 18383 | { |
987504bb | 18384 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
18385 | really ever be static objects: otherwise, if you try |
18386 | to, say, break of a class's method and you're in a file | |
18387 | which doesn't mention that class, it won't work unless | |
18388 | the check for all static symbols in lookup_symbol_aux | |
18389 | saves you. See the OtherFileClass tests in | |
18390 | gdb.c++/namespace.exp. */ | |
18391 | ||
e37fd15a | 18392 | if (!suppress_add) |
34eaf542 | 18393 | { |
34eaf542 TT |
18394 | list_to_add = (cu->list_in_scope == &file_symbols |
18395 | && (cu->language == language_cplus | |
18396 | || cu->language == language_java) | |
18397 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 18398 | |
64382290 TT |
18399 | /* The semantics of C++ state that "struct foo { |
18400 | ... }" also defines a typedef for "foo". A Java | |
18401 | class declaration also defines a typedef for the | |
18402 | class. */ | |
18403 | if (cu->language == language_cplus | |
18404 | || cu->language == language_java | |
18405 | || cu->language == language_ada) | |
18406 | { | |
18407 | /* The symbol's name is already allocated along | |
18408 | with this objfile, so we don't need to | |
18409 | duplicate it for the type. */ | |
18410 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
18411 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
18412 | } | |
63d06c5c DC |
18413 | } |
18414 | } | |
c906108c SS |
18415 | break; |
18416 | case DW_TAG_typedef: | |
f1e6e072 | 18417 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 18418 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 18419 | list_to_add = cu->list_in_scope; |
63d06c5c | 18420 | break; |
c906108c | 18421 | case DW_TAG_base_type: |
a02abb62 | 18422 | case DW_TAG_subrange_type: |
f1e6e072 | 18423 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 18424 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 18425 | list_to_add = cu->list_in_scope; |
c906108c SS |
18426 | break; |
18427 | case DW_TAG_enumerator: | |
e142c38c | 18428 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
18429 | if (attr) |
18430 | { | |
e7c27a73 | 18431 | dwarf2_const_value (attr, sym, cu); |
c906108c | 18432 | } |
63d06c5c DC |
18433 | { |
18434 | /* NOTE: carlton/2003-11-10: See comment above in the | |
18435 | DW_TAG_class_type, etc. block. */ | |
18436 | ||
e142c38c | 18437 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
18438 | && (cu->language == language_cplus |
18439 | || cu->language == language_java) | |
e142c38c | 18440 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 18441 | } |
c906108c | 18442 | break; |
74921315 | 18443 | case DW_TAG_imported_declaration: |
5c4e30ca | 18444 | case DW_TAG_namespace: |
f1e6e072 | 18445 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 18446 | list_to_add = &global_symbols; |
5c4e30ca | 18447 | break; |
530e8392 KB |
18448 | case DW_TAG_module: |
18449 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
18450 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
18451 | list_to_add = &global_symbols; | |
18452 | break; | |
4357ac6c | 18453 | case DW_TAG_common_block: |
f1e6e072 | 18454 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
18455 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
18456 | add_symbol_to_list (sym, cu->list_in_scope); | |
18457 | break; | |
c906108c SS |
18458 | default: |
18459 | /* Not a tag we recognize. Hopefully we aren't processing | |
18460 | trash data, but since we must specifically ignore things | |
18461 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 18462 | this point. */ |
e2e0b3e5 | 18463 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 18464 | dwarf_tag_name (die->tag)); |
c906108c SS |
18465 | break; |
18466 | } | |
df8a16a1 | 18467 | |
e37fd15a SW |
18468 | if (suppress_add) |
18469 | { | |
18470 | sym->hash_next = objfile->template_symbols; | |
18471 | objfile->template_symbols = sym; | |
18472 | list_to_add = NULL; | |
18473 | } | |
18474 | ||
18475 | if (list_to_add != NULL) | |
18476 | add_symbol_to_list (sym, list_to_add); | |
18477 | ||
df8a16a1 DJ |
18478 | /* For the benefit of old versions of GCC, check for anonymous |
18479 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 18480 | if (!cu->processing_has_namespace_info |
94af9270 | 18481 | && cu->language == language_cplus) |
a10964d1 | 18482 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
18483 | } |
18484 | return (sym); | |
18485 | } | |
18486 | ||
34eaf542 TT |
18487 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
18488 | ||
18489 | static struct symbol * | |
18490 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
18491 | { | |
18492 | return new_symbol_full (die, type, cu, NULL); | |
18493 | } | |
18494 | ||
98bfdba5 PA |
18495 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
18496 | zero-extend it as appropriate for the symbol's type. The DWARF | |
18497 | standard (v4) is not entirely clear about the meaning of using | |
18498 | DW_FORM_dataN for a constant with a signed type, where the type is | |
18499 | wider than the data. The conclusion of a discussion on the DWARF | |
18500 | list was that this is unspecified. We choose to always zero-extend | |
18501 | because that is the interpretation long in use by GCC. */ | |
c906108c | 18502 | |
98bfdba5 | 18503 | static gdb_byte * |
ff39bb5e | 18504 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 18505 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 18506 | { |
e7c27a73 | 18507 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
18508 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
18509 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
18510 | LONGEST l = DW_UNSND (attr); |
18511 | ||
18512 | if (bits < sizeof (*value) * 8) | |
18513 | { | |
18514 | l &= ((LONGEST) 1 << bits) - 1; | |
18515 | *value = l; | |
18516 | } | |
18517 | else if (bits == sizeof (*value) * 8) | |
18518 | *value = l; | |
18519 | else | |
18520 | { | |
18521 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
18522 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
18523 | return bytes; | |
18524 | } | |
18525 | ||
18526 | return NULL; | |
18527 | } | |
18528 | ||
18529 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
18530 | the value does not fit in *VALUE, set *BYTES - either already | |
18531 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
18532 | or, set *BATON, if we translated the constant to a location | |
18533 | expression. */ | |
18534 | ||
18535 | static void | |
ff39bb5e | 18536 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
18537 | const char *name, struct obstack *obstack, |
18538 | struct dwarf2_cu *cu, | |
d521ce57 | 18539 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
18540 | struct dwarf2_locexpr_baton **baton) |
18541 | { | |
18542 | struct objfile *objfile = cu->objfile; | |
18543 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 18544 | struct dwarf_block *blk; |
98bfdba5 PA |
18545 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
18546 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
18547 | ||
18548 | *value = 0; | |
18549 | *bytes = NULL; | |
18550 | *baton = NULL; | |
c906108c SS |
18551 | |
18552 | switch (attr->form) | |
18553 | { | |
18554 | case DW_FORM_addr: | |
3019eac3 | 18555 | case DW_FORM_GNU_addr_index: |
ac56253d | 18556 | { |
ac56253d TT |
18557 | gdb_byte *data; |
18558 | ||
98bfdba5 PA |
18559 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
18560 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 18561 | cu_header->addr_size, |
98bfdba5 | 18562 | TYPE_LENGTH (type)); |
ac56253d TT |
18563 | /* Symbols of this form are reasonably rare, so we just |
18564 | piggyback on the existing location code rather than writing | |
18565 | a new implementation of symbol_computed_ops. */ | |
7919a973 | 18566 | *baton = obstack_alloc (obstack, sizeof (struct dwarf2_locexpr_baton)); |
98bfdba5 PA |
18567 | (*baton)->per_cu = cu->per_cu; |
18568 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 18569 | |
98bfdba5 | 18570 | (*baton)->size = 2 + cu_header->addr_size; |
7919a973 | 18571 | data = obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 18572 | (*baton)->data = data; |
ac56253d TT |
18573 | |
18574 | data[0] = DW_OP_addr; | |
18575 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
18576 | byte_order, DW_ADDR (attr)); | |
18577 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 18578 | } |
c906108c | 18579 | break; |
4ac36638 | 18580 | case DW_FORM_string: |
93b5768b | 18581 | case DW_FORM_strp: |
3019eac3 | 18582 | case DW_FORM_GNU_str_index: |
36586728 | 18583 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
18584 | /* DW_STRING is already allocated on the objfile obstack, point |
18585 | directly to it. */ | |
d521ce57 | 18586 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 18587 | break; |
c906108c SS |
18588 | case DW_FORM_block1: |
18589 | case DW_FORM_block2: | |
18590 | case DW_FORM_block4: | |
18591 | case DW_FORM_block: | |
2dc7f7b3 | 18592 | case DW_FORM_exprloc: |
c906108c | 18593 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
18594 | if (TYPE_LENGTH (type) != blk->size) |
18595 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
18596 | TYPE_LENGTH (type)); | |
18597 | *bytes = blk->data; | |
c906108c | 18598 | break; |
2df3850c JM |
18599 | |
18600 | /* The DW_AT_const_value attributes are supposed to carry the | |
18601 | symbol's value "represented as it would be on the target | |
18602 | architecture." By the time we get here, it's already been | |
18603 | converted to host endianness, so we just need to sign- or | |
18604 | zero-extend it as appropriate. */ | |
18605 | case DW_FORM_data1: | |
3aef2284 | 18606 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 18607 | break; |
c906108c | 18608 | case DW_FORM_data2: |
3aef2284 | 18609 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 18610 | break; |
c906108c | 18611 | case DW_FORM_data4: |
3aef2284 | 18612 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 18613 | break; |
c906108c | 18614 | case DW_FORM_data8: |
3aef2284 | 18615 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
18616 | break; |
18617 | ||
c906108c | 18618 | case DW_FORM_sdata: |
98bfdba5 | 18619 | *value = DW_SND (attr); |
2df3850c JM |
18620 | break; |
18621 | ||
c906108c | 18622 | case DW_FORM_udata: |
98bfdba5 | 18623 | *value = DW_UNSND (attr); |
c906108c | 18624 | break; |
2df3850c | 18625 | |
c906108c | 18626 | default: |
4d3c2250 | 18627 | complaint (&symfile_complaints, |
e2e0b3e5 | 18628 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 18629 | dwarf_form_name (attr->form)); |
98bfdba5 | 18630 | *value = 0; |
c906108c SS |
18631 | break; |
18632 | } | |
18633 | } | |
18634 | ||
2df3850c | 18635 | |
98bfdba5 PA |
18636 | /* Copy constant value from an attribute to a symbol. */ |
18637 | ||
2df3850c | 18638 | static void |
ff39bb5e | 18639 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 18640 | struct dwarf2_cu *cu) |
2df3850c | 18641 | { |
98bfdba5 PA |
18642 | struct objfile *objfile = cu->objfile; |
18643 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 18644 | LONGEST value; |
d521ce57 | 18645 | const gdb_byte *bytes; |
98bfdba5 | 18646 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 18647 | |
98bfdba5 PA |
18648 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
18649 | SYMBOL_PRINT_NAME (sym), | |
18650 | &objfile->objfile_obstack, cu, | |
18651 | &value, &bytes, &baton); | |
2df3850c | 18652 | |
98bfdba5 PA |
18653 | if (baton != NULL) |
18654 | { | |
98bfdba5 | 18655 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 18656 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
18657 | } |
18658 | else if (bytes != NULL) | |
18659 | { | |
18660 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 18661 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
18662 | } |
18663 | else | |
18664 | { | |
18665 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 18666 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 18667 | } |
2df3850c JM |
18668 | } |
18669 | ||
c906108c SS |
18670 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
18671 | ||
18672 | static struct type * | |
e7c27a73 | 18673 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18674 | { |
c906108c | 18675 | struct attribute *type_attr; |
c906108c | 18676 | |
e142c38c | 18677 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
18678 | if (!type_attr) |
18679 | { | |
18680 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 18681 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 18682 | } |
348e048f | 18683 | |
673bfd45 | 18684 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
18685 | } |
18686 | ||
b4ba55a1 JB |
18687 | /* True iff CU's producer generates GNAT Ada auxiliary information |
18688 | that allows to find parallel types through that information instead | |
18689 | of having to do expensive parallel lookups by type name. */ | |
18690 | ||
18691 | static int | |
18692 | need_gnat_info (struct dwarf2_cu *cu) | |
18693 | { | |
18694 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
18695 | of GNAT produces this auxiliary information, without any indication | |
18696 | that it is produced. Part of enhancing the FSF version of GNAT | |
18697 | to produce that information will be to put in place an indicator | |
18698 | that we can use in order to determine whether the descriptive type | |
18699 | info is available or not. One suggestion that has been made is | |
18700 | to use a new attribute, attached to the CU die. For now, assume | |
18701 | that the descriptive type info is not available. */ | |
18702 | return 0; | |
18703 | } | |
18704 | ||
b4ba55a1 JB |
18705 | /* Return the auxiliary type of the die in question using its |
18706 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
18707 | attribute is not present. */ | |
18708 | ||
18709 | static struct type * | |
18710 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
18711 | { | |
b4ba55a1 | 18712 | struct attribute *type_attr; |
b4ba55a1 JB |
18713 | |
18714 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
18715 | if (!type_attr) | |
18716 | return NULL; | |
18717 | ||
673bfd45 | 18718 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
18719 | } |
18720 | ||
18721 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
18722 | descriptive type accordingly. */ | |
18723 | ||
18724 | static void | |
18725 | set_descriptive_type (struct type *type, struct die_info *die, | |
18726 | struct dwarf2_cu *cu) | |
18727 | { | |
18728 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
18729 | ||
18730 | if (descriptive_type) | |
18731 | { | |
18732 | ALLOCATE_GNAT_AUX_TYPE (type); | |
18733 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
18734 | } | |
18735 | } | |
18736 | ||
c906108c SS |
18737 | /* Return the containing type of the die in question using its |
18738 | DW_AT_containing_type attribute. */ | |
18739 | ||
18740 | static struct type * | |
e7c27a73 | 18741 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18742 | { |
c906108c | 18743 | struct attribute *type_attr; |
c906108c | 18744 | |
e142c38c | 18745 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
18746 | if (!type_attr) |
18747 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 18748 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 18749 | |
673bfd45 | 18750 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
18751 | } |
18752 | ||
ac9ec31b DE |
18753 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
18754 | ||
18755 | static struct type * | |
18756 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
18757 | { | |
18758 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18759 | char *message, *saved; | |
18760 | ||
18761 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 18762 | objfile_name (objfile), |
ac9ec31b DE |
18763 | cu->header.offset.sect_off, |
18764 | die->offset.sect_off); | |
18765 | saved = obstack_copy0 (&objfile->objfile_obstack, | |
18766 | message, strlen (message)); | |
18767 | xfree (message); | |
18768 | ||
18769 | return init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); | |
18770 | } | |
18771 | ||
673bfd45 | 18772 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
18773 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
18774 | DW_AT_containing_type. | |
673bfd45 DE |
18775 | If there is no type substitute an error marker. */ |
18776 | ||
c906108c | 18777 | static struct type * |
ff39bb5e | 18778 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 18779 | struct dwarf2_cu *cu) |
c906108c | 18780 | { |
bb5ed363 | 18781 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
18782 | struct type *this_type; |
18783 | ||
ac9ec31b DE |
18784 | gdb_assert (attr->name == DW_AT_type |
18785 | || attr->name == DW_AT_GNAT_descriptive_type | |
18786 | || attr->name == DW_AT_containing_type); | |
18787 | ||
673bfd45 DE |
18788 | /* First see if we have it cached. */ |
18789 | ||
36586728 TT |
18790 | if (attr->form == DW_FORM_GNU_ref_alt) |
18791 | { | |
18792 | struct dwarf2_per_cu_data *per_cu; | |
18793 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
18794 | ||
18795 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
18796 | this_type = get_die_type_at_offset (offset, per_cu); | |
18797 | } | |
7771576e | 18798 | else if (attr_form_is_ref (attr)) |
673bfd45 | 18799 | { |
b64f50a1 | 18800 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
18801 | |
18802 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
18803 | } | |
55f1336d | 18804 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 18805 | { |
ac9ec31b | 18806 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 18807 | |
ac9ec31b | 18808 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
18809 | } |
18810 | else | |
18811 | { | |
ac9ec31b DE |
18812 | complaint (&symfile_complaints, |
18813 | _("Dwarf Error: Bad type attribute %s in DIE" | |
18814 | " at 0x%x [in module %s]"), | |
18815 | dwarf_attr_name (attr->name), die->offset.sect_off, | |
4262abfb | 18816 | objfile_name (objfile)); |
ac9ec31b | 18817 | return build_error_marker_type (cu, die); |
673bfd45 DE |
18818 | } |
18819 | ||
18820 | /* If not cached we need to read it in. */ | |
18821 | ||
18822 | if (this_type == NULL) | |
18823 | { | |
ac9ec31b | 18824 | struct die_info *type_die = NULL; |
673bfd45 DE |
18825 | struct dwarf2_cu *type_cu = cu; |
18826 | ||
7771576e | 18827 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
18828 | type_die = follow_die_ref (die, attr, &type_cu); |
18829 | if (type_die == NULL) | |
18830 | return build_error_marker_type (cu, die); | |
18831 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
18832 | from an inter-CU reference and the type's CU got expanded before |
18833 | ours. */ | |
ac9ec31b | 18834 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
18835 | } |
18836 | ||
18837 | /* If we still don't have a type use an error marker. */ | |
18838 | ||
18839 | if (this_type == NULL) | |
ac9ec31b | 18840 | return build_error_marker_type (cu, die); |
673bfd45 | 18841 | |
f792889a | 18842 | return this_type; |
c906108c SS |
18843 | } |
18844 | ||
673bfd45 DE |
18845 | /* Return the type in DIE, CU. |
18846 | Returns NULL for invalid types. | |
18847 | ||
02142a6c | 18848 | This first does a lookup in die_type_hash, |
673bfd45 DE |
18849 | and only reads the die in if necessary. |
18850 | ||
18851 | NOTE: This can be called when reading in partial or full symbols. */ | |
18852 | ||
f792889a | 18853 | static struct type * |
e7c27a73 | 18854 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18855 | { |
f792889a DJ |
18856 | struct type *this_type; |
18857 | ||
18858 | this_type = get_die_type (die, cu); | |
18859 | if (this_type) | |
18860 | return this_type; | |
18861 | ||
673bfd45 DE |
18862 | return read_type_die_1 (die, cu); |
18863 | } | |
18864 | ||
18865 | /* Read the type in DIE, CU. | |
18866 | Returns NULL for invalid types. */ | |
18867 | ||
18868 | static struct type * | |
18869 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
18870 | { | |
18871 | struct type *this_type = NULL; | |
18872 | ||
c906108c SS |
18873 | switch (die->tag) |
18874 | { | |
18875 | case DW_TAG_class_type: | |
680b30c7 | 18876 | case DW_TAG_interface_type: |
c906108c SS |
18877 | case DW_TAG_structure_type: |
18878 | case DW_TAG_union_type: | |
f792889a | 18879 | this_type = read_structure_type (die, cu); |
c906108c SS |
18880 | break; |
18881 | case DW_TAG_enumeration_type: | |
f792889a | 18882 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
18883 | break; |
18884 | case DW_TAG_subprogram: | |
18885 | case DW_TAG_subroutine_type: | |
edb3359d | 18886 | case DW_TAG_inlined_subroutine: |
f792889a | 18887 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
18888 | break; |
18889 | case DW_TAG_array_type: | |
f792889a | 18890 | this_type = read_array_type (die, cu); |
c906108c | 18891 | break; |
72019c9c | 18892 | case DW_TAG_set_type: |
f792889a | 18893 | this_type = read_set_type (die, cu); |
72019c9c | 18894 | break; |
c906108c | 18895 | case DW_TAG_pointer_type: |
f792889a | 18896 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
18897 | break; |
18898 | case DW_TAG_ptr_to_member_type: | |
f792889a | 18899 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
18900 | break; |
18901 | case DW_TAG_reference_type: | |
f792889a | 18902 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
18903 | break; |
18904 | case DW_TAG_const_type: | |
f792889a | 18905 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
18906 | break; |
18907 | case DW_TAG_volatile_type: | |
f792889a | 18908 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 18909 | break; |
06d66ee9 TT |
18910 | case DW_TAG_restrict_type: |
18911 | this_type = read_tag_restrict_type (die, cu); | |
18912 | break; | |
c906108c | 18913 | case DW_TAG_string_type: |
f792889a | 18914 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
18915 | break; |
18916 | case DW_TAG_typedef: | |
f792889a | 18917 | this_type = read_typedef (die, cu); |
c906108c | 18918 | break; |
a02abb62 | 18919 | case DW_TAG_subrange_type: |
f792889a | 18920 | this_type = read_subrange_type (die, cu); |
a02abb62 | 18921 | break; |
c906108c | 18922 | case DW_TAG_base_type: |
f792889a | 18923 | this_type = read_base_type (die, cu); |
c906108c | 18924 | break; |
81a17f79 | 18925 | case DW_TAG_unspecified_type: |
f792889a | 18926 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 18927 | break; |
0114d602 DJ |
18928 | case DW_TAG_namespace: |
18929 | this_type = read_namespace_type (die, cu); | |
18930 | break; | |
f55ee35c JK |
18931 | case DW_TAG_module: |
18932 | this_type = read_module_type (die, cu); | |
18933 | break; | |
a2c2acaf MW |
18934 | case DW_TAG_atomic_type: |
18935 | this_type = read_tag_atomic_type (die, cu); | |
18936 | break; | |
c906108c | 18937 | default: |
3e43a32a MS |
18938 | complaint (&symfile_complaints, |
18939 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 18940 | dwarf_tag_name (die->tag)); |
c906108c SS |
18941 | break; |
18942 | } | |
63d06c5c | 18943 | |
f792889a | 18944 | return this_type; |
63d06c5c DC |
18945 | } |
18946 | ||
abc72ce4 DE |
18947 | /* See if we can figure out if the class lives in a namespace. We do |
18948 | this by looking for a member function; its demangled name will | |
18949 | contain namespace info, if there is any. | |
18950 | Return the computed name or NULL. | |
18951 | Space for the result is allocated on the objfile's obstack. | |
18952 | This is the full-die version of guess_partial_die_structure_name. | |
18953 | In this case we know DIE has no useful parent. */ | |
18954 | ||
18955 | static char * | |
18956 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
18957 | { | |
18958 | struct die_info *spec_die; | |
18959 | struct dwarf2_cu *spec_cu; | |
18960 | struct die_info *child; | |
18961 | ||
18962 | spec_cu = cu; | |
18963 | spec_die = die_specification (die, &spec_cu); | |
18964 | if (spec_die != NULL) | |
18965 | { | |
18966 | die = spec_die; | |
18967 | cu = spec_cu; | |
18968 | } | |
18969 | ||
18970 | for (child = die->child; | |
18971 | child != NULL; | |
18972 | child = child->sibling) | |
18973 | { | |
18974 | if (child->tag == DW_TAG_subprogram) | |
18975 | { | |
18976 | struct attribute *attr; | |
18977 | ||
18978 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
18979 | if (attr == NULL) | |
18980 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
18981 | if (attr != NULL) | |
18982 | { | |
18983 | char *actual_name | |
18984 | = language_class_name_from_physname (cu->language_defn, | |
18985 | DW_STRING (attr)); | |
18986 | char *name = NULL; | |
18987 | ||
18988 | if (actual_name != NULL) | |
18989 | { | |
15d034d0 | 18990 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
18991 | |
18992 | if (die_name != NULL | |
18993 | && strcmp (die_name, actual_name) != 0) | |
18994 | { | |
18995 | /* Strip off the class name from the full name. | |
18996 | We want the prefix. */ | |
18997 | int die_name_len = strlen (die_name); | |
18998 | int actual_name_len = strlen (actual_name); | |
18999 | ||
19000 | /* Test for '::' as a sanity check. */ | |
19001 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
19002 | && actual_name[actual_name_len |
19003 | - die_name_len - 1] == ':') | |
abc72ce4 | 19004 | name = |
34a68019 | 19005 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb TT |
19006 | actual_name, |
19007 | actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
19008 | } |
19009 | } | |
19010 | xfree (actual_name); | |
19011 | return name; | |
19012 | } | |
19013 | } | |
19014 | } | |
19015 | ||
19016 | return NULL; | |
19017 | } | |
19018 | ||
96408a79 SA |
19019 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
19020 | prefix part in such case. See | |
19021 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
19022 | ||
19023 | static char * | |
19024 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
19025 | { | |
19026 | struct attribute *attr; | |
19027 | char *base; | |
19028 | ||
19029 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
19030 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
19031 | return NULL; | |
19032 | ||
19033 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
19034 | if (attr != NULL && DW_STRING (attr) != NULL) | |
19035 | return NULL; | |
19036 | ||
19037 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
19038 | if (attr == NULL) | |
19039 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
19040 | if (attr == NULL || DW_STRING (attr) == NULL) | |
19041 | return NULL; | |
19042 | ||
19043 | /* dwarf2_name had to be already called. */ | |
19044 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
19045 | ||
19046 | /* Strip the base name, keep any leading namespaces/classes. */ | |
19047 | base = strrchr (DW_STRING (attr), ':'); | |
19048 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
19049 | return ""; | |
19050 | ||
34a68019 | 19051 | return obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb | 19052 | DW_STRING (attr), &base[-1] - DW_STRING (attr)); |
96408a79 SA |
19053 | } |
19054 | ||
fdde2d81 | 19055 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 19056 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 19057 | |
0114d602 DJ |
19058 | For example, if we're within the method foo() in the following |
19059 | code: | |
19060 | ||
19061 | namespace N { | |
19062 | class C { | |
19063 | void foo () { | |
19064 | } | |
19065 | }; | |
19066 | } | |
19067 | ||
19068 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 19069 | |
0d5cff50 | 19070 | static const char * |
e142c38c | 19071 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 19072 | { |
0114d602 DJ |
19073 | struct die_info *parent, *spec_die; |
19074 | struct dwarf2_cu *spec_cu; | |
19075 | struct type *parent_type; | |
96408a79 | 19076 | char *retval; |
63d06c5c | 19077 | |
f55ee35c JK |
19078 | if (cu->language != language_cplus && cu->language != language_java |
19079 | && cu->language != language_fortran) | |
0114d602 DJ |
19080 | return ""; |
19081 | ||
96408a79 SA |
19082 | retval = anonymous_struct_prefix (die, cu); |
19083 | if (retval) | |
19084 | return retval; | |
19085 | ||
0114d602 DJ |
19086 | /* We have to be careful in the presence of DW_AT_specification. |
19087 | For example, with GCC 3.4, given the code | |
19088 | ||
19089 | namespace N { | |
19090 | void foo() { | |
19091 | // Definition of N::foo. | |
19092 | } | |
19093 | } | |
19094 | ||
19095 | then we'll have a tree of DIEs like this: | |
19096 | ||
19097 | 1: DW_TAG_compile_unit | |
19098 | 2: DW_TAG_namespace // N | |
19099 | 3: DW_TAG_subprogram // declaration of N::foo | |
19100 | 4: DW_TAG_subprogram // definition of N::foo | |
19101 | DW_AT_specification // refers to die #3 | |
19102 | ||
19103 | Thus, when processing die #4, we have to pretend that we're in | |
19104 | the context of its DW_AT_specification, namely the contex of die | |
19105 | #3. */ | |
19106 | spec_cu = cu; | |
19107 | spec_die = die_specification (die, &spec_cu); | |
19108 | if (spec_die == NULL) | |
19109 | parent = die->parent; | |
19110 | else | |
63d06c5c | 19111 | { |
0114d602 DJ |
19112 | parent = spec_die->parent; |
19113 | cu = spec_cu; | |
63d06c5c | 19114 | } |
0114d602 DJ |
19115 | |
19116 | if (parent == NULL) | |
19117 | return ""; | |
98bfdba5 PA |
19118 | else if (parent->building_fullname) |
19119 | { | |
19120 | const char *name; | |
19121 | const char *parent_name; | |
19122 | ||
19123 | /* It has been seen on RealView 2.2 built binaries, | |
19124 | DW_TAG_template_type_param types actually _defined_ as | |
19125 | children of the parent class: | |
19126 | ||
19127 | enum E {}; | |
19128 | template class <class Enum> Class{}; | |
19129 | Class<enum E> class_e; | |
19130 | ||
19131 | 1: DW_TAG_class_type (Class) | |
19132 | 2: DW_TAG_enumeration_type (E) | |
19133 | 3: DW_TAG_enumerator (enum1:0) | |
19134 | 3: DW_TAG_enumerator (enum2:1) | |
19135 | ... | |
19136 | 2: DW_TAG_template_type_param | |
19137 | DW_AT_type DW_FORM_ref_udata (E) | |
19138 | ||
19139 | Besides being broken debug info, it can put GDB into an | |
19140 | infinite loop. Consider: | |
19141 | ||
19142 | When we're building the full name for Class<E>, we'll start | |
19143 | at Class, and go look over its template type parameters, | |
19144 | finding E. We'll then try to build the full name of E, and | |
19145 | reach here. We're now trying to build the full name of E, | |
19146 | and look over the parent DIE for containing scope. In the | |
19147 | broken case, if we followed the parent DIE of E, we'd again | |
19148 | find Class, and once again go look at its template type | |
19149 | arguments, etc., etc. Simply don't consider such parent die | |
19150 | as source-level parent of this die (it can't be, the language | |
19151 | doesn't allow it), and break the loop here. */ | |
19152 | name = dwarf2_name (die, cu); | |
19153 | parent_name = dwarf2_name (parent, cu); | |
19154 | complaint (&symfile_complaints, | |
19155 | _("template param type '%s' defined within parent '%s'"), | |
19156 | name ? name : "<unknown>", | |
19157 | parent_name ? parent_name : "<unknown>"); | |
19158 | return ""; | |
19159 | } | |
63d06c5c | 19160 | else |
0114d602 DJ |
19161 | switch (parent->tag) |
19162 | { | |
63d06c5c | 19163 | case DW_TAG_namespace: |
0114d602 | 19164 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
19165 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
19166 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
19167 | Work around this problem here. */ | |
19168 | if (cu->language == language_cplus | |
19169 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
19170 | return ""; | |
0114d602 DJ |
19171 | /* We give a name to even anonymous namespaces. */ |
19172 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 19173 | case DW_TAG_class_type: |
680b30c7 | 19174 | case DW_TAG_interface_type: |
63d06c5c | 19175 | case DW_TAG_structure_type: |
0114d602 | 19176 | case DW_TAG_union_type: |
f55ee35c | 19177 | case DW_TAG_module: |
0114d602 DJ |
19178 | parent_type = read_type_die (parent, cu); |
19179 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19180 | return TYPE_TAG_NAME (parent_type); | |
19181 | else | |
19182 | /* An anonymous structure is only allowed non-static data | |
19183 | members; no typedefs, no member functions, et cetera. | |
19184 | So it does not need a prefix. */ | |
19185 | return ""; | |
abc72ce4 | 19186 | case DW_TAG_compile_unit: |
95554aad | 19187 | case DW_TAG_partial_unit: |
abc72ce4 DE |
19188 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
19189 | if (cu->language == language_cplus | |
8b70b953 | 19190 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
19191 | && die->child != NULL |
19192 | && (die->tag == DW_TAG_class_type | |
19193 | || die->tag == DW_TAG_structure_type | |
19194 | || die->tag == DW_TAG_union_type)) | |
19195 | { | |
19196 | char *name = guess_full_die_structure_name (die, cu); | |
19197 | if (name != NULL) | |
19198 | return name; | |
19199 | } | |
19200 | return ""; | |
3d567982 TT |
19201 | case DW_TAG_enumeration_type: |
19202 | parent_type = read_type_die (parent, cu); | |
19203 | if (TYPE_DECLARED_CLASS (parent_type)) | |
19204 | { | |
19205 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19206 | return TYPE_TAG_NAME (parent_type); | |
19207 | return ""; | |
19208 | } | |
19209 | /* Fall through. */ | |
63d06c5c | 19210 | default: |
8176b9b8 | 19211 | return determine_prefix (parent, cu); |
63d06c5c | 19212 | } |
63d06c5c DC |
19213 | } |
19214 | ||
3e43a32a MS |
19215 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
19216 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
19217 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
19218 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
19219 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 19220 | |
f55ee35c | 19221 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
19222 | |
19223 | static char * | |
f55ee35c JK |
19224 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
19225 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 19226 | { |
f55ee35c | 19227 | const char *lead = ""; |
5c315b68 | 19228 | const char *sep; |
63d06c5c | 19229 | |
3e43a32a MS |
19230 | if (suffix == NULL || suffix[0] == '\0' |
19231 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
19232 | sep = ""; |
19233 | else if (cu->language == language_java) | |
19234 | sep = "."; | |
f55ee35c JK |
19235 | else if (cu->language == language_fortran && physname) |
19236 | { | |
19237 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
19238 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
19239 | ||
19240 | lead = "__"; | |
19241 | sep = "_MOD_"; | |
19242 | } | |
987504bb JJ |
19243 | else |
19244 | sep = "::"; | |
63d06c5c | 19245 | |
6dd47d34 DE |
19246 | if (prefix == NULL) |
19247 | prefix = ""; | |
19248 | if (suffix == NULL) | |
19249 | suffix = ""; | |
19250 | ||
987504bb JJ |
19251 | if (obs == NULL) |
19252 | { | |
3e43a32a MS |
19253 | char *retval |
19254 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 19255 | |
f55ee35c JK |
19256 | strcpy (retval, lead); |
19257 | strcat (retval, prefix); | |
6dd47d34 DE |
19258 | strcat (retval, sep); |
19259 | strcat (retval, suffix); | |
63d06c5c DC |
19260 | return retval; |
19261 | } | |
987504bb JJ |
19262 | else |
19263 | { | |
19264 | /* We have an obstack. */ | |
f55ee35c | 19265 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 19266 | } |
63d06c5c DC |
19267 | } |
19268 | ||
c906108c SS |
19269 | /* Return sibling of die, NULL if no sibling. */ |
19270 | ||
f9aca02d | 19271 | static struct die_info * |
fba45db2 | 19272 | sibling_die (struct die_info *die) |
c906108c | 19273 | { |
639d11d3 | 19274 | return die->sibling; |
c906108c SS |
19275 | } |
19276 | ||
71c25dea TT |
19277 | /* Get name of a die, return NULL if not found. */ |
19278 | ||
15d034d0 TT |
19279 | static const char * |
19280 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
19281 | struct obstack *obstack) |
19282 | { | |
19283 | if (name && cu->language == language_cplus) | |
19284 | { | |
19285 | char *canon_name = cp_canonicalize_string (name); | |
19286 | ||
19287 | if (canon_name != NULL) | |
19288 | { | |
19289 | if (strcmp (canon_name, name) != 0) | |
10f0c4bb | 19290 | name = obstack_copy0 (obstack, canon_name, strlen (canon_name)); |
71c25dea TT |
19291 | xfree (canon_name); |
19292 | } | |
19293 | } | |
19294 | ||
19295 | return name; | |
c906108c SS |
19296 | } |
19297 | ||
96553a0c DE |
19298 | /* Get name of a die, return NULL if not found. |
19299 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 19300 | |
15d034d0 | 19301 | static const char * |
e142c38c | 19302 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
19303 | { |
19304 | struct attribute *attr; | |
19305 | ||
e142c38c | 19306 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 19307 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 19308 | && die->tag != DW_TAG_namespace |
53832f31 TT |
19309 | && die->tag != DW_TAG_class_type |
19310 | && die->tag != DW_TAG_interface_type | |
19311 | && die->tag != DW_TAG_structure_type | |
19312 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
19313 | return NULL; |
19314 | ||
19315 | switch (die->tag) | |
19316 | { | |
19317 | case DW_TAG_compile_unit: | |
95554aad | 19318 | case DW_TAG_partial_unit: |
71c25dea TT |
19319 | /* Compilation units have a DW_AT_name that is a filename, not |
19320 | a source language identifier. */ | |
19321 | case DW_TAG_enumeration_type: | |
19322 | case DW_TAG_enumerator: | |
19323 | /* These tags always have simple identifiers already; no need | |
19324 | to canonicalize them. */ | |
19325 | return DW_STRING (attr); | |
907af001 | 19326 | |
96553a0c DE |
19327 | case DW_TAG_namespace: |
19328 | if (attr != NULL && DW_STRING (attr) != NULL) | |
19329 | return DW_STRING (attr); | |
19330 | return CP_ANONYMOUS_NAMESPACE_STR; | |
19331 | ||
418835cc KS |
19332 | case DW_TAG_subprogram: |
19333 | /* Java constructors will all be named "<init>", so return | |
19334 | the class name when we see this special case. */ | |
19335 | if (cu->language == language_java | |
19336 | && DW_STRING (attr) != NULL | |
19337 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
19338 | { | |
19339 | struct dwarf2_cu *spec_cu = cu; | |
19340 | struct die_info *spec_die; | |
19341 | ||
19342 | /* GCJ will output '<init>' for Java constructor names. | |
19343 | For this special case, return the name of the parent class. */ | |
19344 | ||
cdc07690 | 19345 | /* GCJ may output subprogram DIEs with AT_specification set. |
418835cc KS |
19346 | If so, use the name of the specified DIE. */ |
19347 | spec_die = die_specification (die, &spec_cu); | |
19348 | if (spec_die != NULL) | |
19349 | return dwarf2_name (spec_die, spec_cu); | |
19350 | ||
19351 | do | |
19352 | { | |
19353 | die = die->parent; | |
19354 | if (die->tag == DW_TAG_class_type) | |
19355 | return dwarf2_name (die, cu); | |
19356 | } | |
95554aad TT |
19357 | while (die->tag != DW_TAG_compile_unit |
19358 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 19359 | } |
907af001 UW |
19360 | break; |
19361 | ||
19362 | case DW_TAG_class_type: | |
19363 | case DW_TAG_interface_type: | |
19364 | case DW_TAG_structure_type: | |
19365 | case DW_TAG_union_type: | |
19366 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
19367 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
19368 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
19369 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 19370 | if (attr && DW_STRING (attr) |
61012eef GB |
19371 | && (startswith (DW_STRING (attr), "._") |
19372 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 19373 | return NULL; |
53832f31 TT |
19374 | |
19375 | /* GCC might emit a nameless typedef that has a linkage name. See | |
19376 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
19377 | if (!attr || DW_STRING (attr) == NULL) | |
19378 | { | |
df5c6c50 | 19379 | char *demangled = NULL; |
53832f31 TT |
19380 | |
19381 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
19382 | if (attr == NULL) | |
19383 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
19384 | ||
19385 | if (attr == NULL || DW_STRING (attr) == NULL) | |
19386 | return NULL; | |
19387 | ||
df5c6c50 JK |
19388 | /* Avoid demangling DW_STRING (attr) the second time on a second |
19389 | call for the same DIE. */ | |
19390 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 19391 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
19392 | |
19393 | if (demangled) | |
19394 | { | |
96408a79 SA |
19395 | char *base; |
19396 | ||
53832f31 | 19397 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 TT |
19398 | DW_STRING (attr) |
19399 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
19400 | demangled, strlen (demangled)); | |
53832f31 TT |
19401 | DW_STRING_IS_CANONICAL (attr) = 1; |
19402 | xfree (demangled); | |
96408a79 SA |
19403 | |
19404 | /* Strip any leading namespaces/classes, keep only the base name. | |
19405 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
19406 | base = strrchr (DW_STRING (attr), ':'); | |
19407 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
19408 | return &base[1]; | |
19409 | else | |
19410 | return DW_STRING (attr); | |
53832f31 TT |
19411 | } |
19412 | } | |
907af001 UW |
19413 | break; |
19414 | ||
71c25dea | 19415 | default: |
907af001 UW |
19416 | break; |
19417 | } | |
19418 | ||
19419 | if (!DW_STRING_IS_CANONICAL (attr)) | |
19420 | { | |
19421 | DW_STRING (attr) | |
19422 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
34a68019 | 19423 | &cu->objfile->per_bfd->storage_obstack); |
907af001 | 19424 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 19425 | } |
907af001 | 19426 | return DW_STRING (attr); |
9219021c DC |
19427 | } |
19428 | ||
19429 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
19430 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
19431 | containing the return value on output. */ | |
9219021c DC |
19432 | |
19433 | static struct die_info * | |
f2f0e013 | 19434 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
19435 | { |
19436 | struct attribute *attr; | |
9219021c | 19437 | |
f2f0e013 | 19438 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
19439 | if (attr == NULL) |
19440 | return NULL; | |
19441 | ||
f2f0e013 | 19442 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
19443 | } |
19444 | ||
c906108c SS |
19445 | /* Convert a DIE tag into its string name. */ |
19446 | ||
f39c6ffd | 19447 | static const char * |
aa1ee363 | 19448 | dwarf_tag_name (unsigned tag) |
c906108c | 19449 | { |
f39c6ffd TT |
19450 | const char *name = get_DW_TAG_name (tag); |
19451 | ||
19452 | if (name == NULL) | |
19453 | return "DW_TAG_<unknown>"; | |
19454 | ||
19455 | return name; | |
c906108c SS |
19456 | } |
19457 | ||
19458 | /* Convert a DWARF attribute code into its string name. */ | |
19459 | ||
f39c6ffd | 19460 | static const char * |
aa1ee363 | 19461 | dwarf_attr_name (unsigned attr) |
c906108c | 19462 | { |
f39c6ffd TT |
19463 | const char *name; |
19464 | ||
c764a876 | 19465 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
19466 | if (attr == DW_AT_MIPS_fde) |
19467 | return "DW_AT_MIPS_fde"; | |
19468 | #else | |
19469 | if (attr == DW_AT_HP_block_index) | |
19470 | return "DW_AT_HP_block_index"; | |
c764a876 | 19471 | #endif |
f39c6ffd TT |
19472 | |
19473 | name = get_DW_AT_name (attr); | |
19474 | ||
19475 | if (name == NULL) | |
19476 | return "DW_AT_<unknown>"; | |
19477 | ||
19478 | return name; | |
c906108c SS |
19479 | } |
19480 | ||
19481 | /* Convert a DWARF value form code into its string name. */ | |
19482 | ||
f39c6ffd | 19483 | static const char * |
aa1ee363 | 19484 | dwarf_form_name (unsigned form) |
c906108c | 19485 | { |
f39c6ffd TT |
19486 | const char *name = get_DW_FORM_name (form); |
19487 | ||
19488 | if (name == NULL) | |
19489 | return "DW_FORM_<unknown>"; | |
19490 | ||
19491 | return name; | |
c906108c SS |
19492 | } |
19493 | ||
19494 | static char * | |
fba45db2 | 19495 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
19496 | { |
19497 | if (mybool) | |
19498 | return "TRUE"; | |
19499 | else | |
19500 | return "FALSE"; | |
19501 | } | |
19502 | ||
19503 | /* Convert a DWARF type code into its string name. */ | |
19504 | ||
f39c6ffd | 19505 | static const char * |
aa1ee363 | 19506 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 19507 | { |
f39c6ffd | 19508 | const char *name = get_DW_ATE_name (enc); |
c906108c | 19509 | |
f39c6ffd TT |
19510 | if (name == NULL) |
19511 | return "DW_ATE_<unknown>"; | |
c906108c | 19512 | |
f39c6ffd | 19513 | return name; |
c906108c | 19514 | } |
c906108c | 19515 | |
f9aca02d | 19516 | static void |
d97bc12b | 19517 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
19518 | { |
19519 | unsigned int i; | |
19520 | ||
d97bc12b DE |
19521 | print_spaces (indent, f); |
19522 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 19523 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
19524 | |
19525 | if (die->parent != NULL) | |
19526 | { | |
19527 | print_spaces (indent, f); | |
19528 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 19529 | die->parent->offset.sect_off); |
d97bc12b DE |
19530 | } |
19531 | ||
19532 | print_spaces (indent, f); | |
19533 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 19534 | dwarf_bool_name (die->child != NULL)); |
c906108c | 19535 | |
d97bc12b DE |
19536 | print_spaces (indent, f); |
19537 | fprintf_unfiltered (f, " attributes:\n"); | |
19538 | ||
c906108c SS |
19539 | for (i = 0; i < die->num_attrs; ++i) |
19540 | { | |
d97bc12b DE |
19541 | print_spaces (indent, f); |
19542 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
19543 | dwarf_attr_name (die->attrs[i].name), |
19544 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 19545 | |
c906108c SS |
19546 | switch (die->attrs[i].form) |
19547 | { | |
c906108c | 19548 | case DW_FORM_addr: |
3019eac3 | 19549 | case DW_FORM_GNU_addr_index: |
d97bc12b | 19550 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 19551 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
19552 | break; |
19553 | case DW_FORM_block2: | |
19554 | case DW_FORM_block4: | |
19555 | case DW_FORM_block: | |
19556 | case DW_FORM_block1: | |
56eb65bd SP |
19557 | fprintf_unfiltered (f, "block: size %s", |
19558 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 19559 | break; |
2dc7f7b3 | 19560 | case DW_FORM_exprloc: |
56eb65bd SP |
19561 | fprintf_unfiltered (f, "expression: size %s", |
19562 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 19563 | break; |
4568ecf9 DE |
19564 | case DW_FORM_ref_addr: |
19565 | fprintf_unfiltered (f, "ref address: "); | |
19566 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
19567 | break; | |
36586728 TT |
19568 | case DW_FORM_GNU_ref_alt: |
19569 | fprintf_unfiltered (f, "alt ref address: "); | |
19570 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
19571 | break; | |
10b3939b DJ |
19572 | case DW_FORM_ref1: |
19573 | case DW_FORM_ref2: | |
19574 | case DW_FORM_ref4: | |
4568ecf9 DE |
19575 | case DW_FORM_ref8: |
19576 | case DW_FORM_ref_udata: | |
d97bc12b | 19577 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 19578 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 19579 | break; |
c906108c SS |
19580 | case DW_FORM_data1: |
19581 | case DW_FORM_data2: | |
19582 | case DW_FORM_data4: | |
ce5d95e1 | 19583 | case DW_FORM_data8: |
c906108c SS |
19584 | case DW_FORM_udata: |
19585 | case DW_FORM_sdata: | |
43bbcdc2 PH |
19586 | fprintf_unfiltered (f, "constant: %s", |
19587 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 19588 | break; |
2dc7f7b3 TT |
19589 | case DW_FORM_sec_offset: |
19590 | fprintf_unfiltered (f, "section offset: %s", | |
19591 | pulongest (DW_UNSND (&die->attrs[i]))); | |
19592 | break; | |
55f1336d | 19593 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
19594 | fprintf_unfiltered (f, "signature: %s", |
19595 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 19596 | break; |
c906108c | 19597 | case DW_FORM_string: |
4bdf3d34 | 19598 | case DW_FORM_strp: |
3019eac3 | 19599 | case DW_FORM_GNU_str_index: |
36586728 | 19600 | case DW_FORM_GNU_strp_alt: |
8285870a | 19601 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 19602 | DW_STRING (&die->attrs[i]) |
8285870a JK |
19603 | ? DW_STRING (&die->attrs[i]) : "", |
19604 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
19605 | break; |
19606 | case DW_FORM_flag: | |
19607 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 19608 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 19609 | else |
d97bc12b | 19610 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 19611 | break; |
2dc7f7b3 TT |
19612 | case DW_FORM_flag_present: |
19613 | fprintf_unfiltered (f, "flag: TRUE"); | |
19614 | break; | |
a8329558 | 19615 | case DW_FORM_indirect: |
0963b4bd MS |
19616 | /* The reader will have reduced the indirect form to |
19617 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
19618 | fprintf_unfiltered (f, |
19619 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 19620 | break; |
c906108c | 19621 | default: |
d97bc12b | 19622 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 19623 | die->attrs[i].form); |
d97bc12b | 19624 | break; |
c906108c | 19625 | } |
d97bc12b | 19626 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
19627 | } |
19628 | } | |
19629 | ||
f9aca02d | 19630 | static void |
d97bc12b | 19631 | dump_die_for_error (struct die_info *die) |
c906108c | 19632 | { |
d97bc12b DE |
19633 | dump_die_shallow (gdb_stderr, 0, die); |
19634 | } | |
19635 | ||
19636 | static void | |
19637 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
19638 | { | |
19639 | int indent = level * 4; | |
19640 | ||
19641 | gdb_assert (die != NULL); | |
19642 | ||
19643 | if (level >= max_level) | |
19644 | return; | |
19645 | ||
19646 | dump_die_shallow (f, indent, die); | |
19647 | ||
19648 | if (die->child != NULL) | |
c906108c | 19649 | { |
d97bc12b DE |
19650 | print_spaces (indent, f); |
19651 | fprintf_unfiltered (f, " Children:"); | |
19652 | if (level + 1 < max_level) | |
19653 | { | |
19654 | fprintf_unfiltered (f, "\n"); | |
19655 | dump_die_1 (f, level + 1, max_level, die->child); | |
19656 | } | |
19657 | else | |
19658 | { | |
3e43a32a MS |
19659 | fprintf_unfiltered (f, |
19660 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
19661 | } |
19662 | } | |
19663 | ||
19664 | if (die->sibling != NULL && level > 0) | |
19665 | { | |
19666 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
19667 | } |
19668 | } | |
19669 | ||
d97bc12b DE |
19670 | /* This is called from the pdie macro in gdbinit.in. |
19671 | It's not static so gcc will keep a copy callable from gdb. */ | |
19672 | ||
19673 | void | |
19674 | dump_die (struct die_info *die, int max_level) | |
19675 | { | |
19676 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
19677 | } | |
19678 | ||
f9aca02d | 19679 | static void |
51545339 | 19680 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19681 | { |
51545339 | 19682 | void **slot; |
c906108c | 19683 | |
b64f50a1 JK |
19684 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
19685 | INSERT); | |
51545339 DJ |
19686 | |
19687 | *slot = die; | |
c906108c SS |
19688 | } |
19689 | ||
b64f50a1 JK |
19690 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
19691 | required kind. */ | |
19692 | ||
19693 | static sect_offset | |
ff39bb5e | 19694 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 19695 | { |
4568ecf9 | 19696 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 19697 | |
7771576e | 19698 | if (attr_form_is_ref (attr)) |
b64f50a1 | 19699 | return retval; |
93311388 | 19700 | |
b64f50a1 | 19701 | retval.sect_off = 0; |
93311388 DE |
19702 | complaint (&symfile_complaints, |
19703 | _("unsupported die ref attribute form: '%s'"), | |
19704 | dwarf_form_name (attr->form)); | |
b64f50a1 | 19705 | return retval; |
c906108c SS |
19706 | } |
19707 | ||
43bbcdc2 PH |
19708 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
19709 | * the value held by the attribute is not constant. */ | |
a02abb62 | 19710 | |
43bbcdc2 | 19711 | static LONGEST |
ff39bb5e | 19712 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 JB |
19713 | { |
19714 | if (attr->form == DW_FORM_sdata) | |
19715 | return DW_SND (attr); | |
19716 | else if (attr->form == DW_FORM_udata | |
19717 | || attr->form == DW_FORM_data1 | |
19718 | || attr->form == DW_FORM_data2 | |
19719 | || attr->form == DW_FORM_data4 | |
19720 | || attr->form == DW_FORM_data8) | |
19721 | return DW_UNSND (attr); | |
19722 | else | |
19723 | { | |
3e43a32a MS |
19724 | complaint (&symfile_complaints, |
19725 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
19726 | dwarf_form_name (attr->form)); |
19727 | return default_value; | |
19728 | } | |
19729 | } | |
19730 | ||
348e048f DE |
19731 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
19732 | On entry *REF_CU is the CU of SRC_DIE. | |
19733 | On exit *REF_CU is the CU of the result. */ | |
19734 | ||
19735 | static struct die_info * | |
ff39bb5e | 19736 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
19737 | struct dwarf2_cu **ref_cu) |
19738 | { | |
19739 | struct die_info *die; | |
19740 | ||
7771576e | 19741 | if (attr_form_is_ref (attr)) |
348e048f | 19742 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 19743 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
19744 | die = follow_die_sig (src_die, attr, ref_cu); |
19745 | else | |
19746 | { | |
19747 | dump_die_for_error (src_die); | |
19748 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 19749 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
19750 | } |
19751 | ||
19752 | return die; | |
03dd20cc DJ |
19753 | } |
19754 | ||
5c631832 | 19755 | /* Follow reference OFFSET. |
673bfd45 DE |
19756 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
19757 | On exit *REF_CU is the CU of the result. | |
19758 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 19759 | |
f9aca02d | 19760 | static struct die_info * |
36586728 TT |
19761 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
19762 | struct dwarf2_cu **ref_cu) | |
c906108c | 19763 | { |
10b3939b | 19764 | struct die_info temp_die; |
f2f0e013 | 19765 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 19766 | |
348e048f DE |
19767 | gdb_assert (cu->per_cu != NULL); |
19768 | ||
98bfdba5 PA |
19769 | target_cu = cu; |
19770 | ||
3019eac3 | 19771 | if (cu->per_cu->is_debug_types) |
348e048f DE |
19772 | { |
19773 | /* .debug_types CUs cannot reference anything outside their CU. | |
19774 | If they need to, they have to reference a signatured type via | |
55f1336d | 19775 | DW_FORM_ref_sig8. */ |
348e048f | 19776 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 19777 | return NULL; |
348e048f | 19778 | } |
36586728 TT |
19779 | else if (offset_in_dwz != cu->per_cu->is_dwz |
19780 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
19781 | { |
19782 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 19783 | |
36586728 TT |
19784 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
19785 | cu->objfile); | |
03dd20cc DJ |
19786 | |
19787 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
19788 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
19789 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 19790 | |
10b3939b DJ |
19791 | target_cu = per_cu->cu; |
19792 | } | |
98bfdba5 PA |
19793 | else if (cu->dies == NULL) |
19794 | { | |
19795 | /* We're loading full DIEs during partial symbol reading. */ | |
19796 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 19797 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 19798 | } |
c906108c | 19799 | |
f2f0e013 | 19800 | *ref_cu = target_cu; |
51545339 | 19801 | temp_die.offset = offset; |
b64f50a1 | 19802 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 19803 | } |
10b3939b | 19804 | |
5c631832 JK |
19805 | /* Follow reference attribute ATTR of SRC_DIE. |
19806 | On entry *REF_CU is the CU of SRC_DIE. | |
19807 | On exit *REF_CU is the CU of the result. */ | |
19808 | ||
19809 | static struct die_info * | |
ff39bb5e | 19810 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
19811 | struct dwarf2_cu **ref_cu) |
19812 | { | |
b64f50a1 | 19813 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
19814 | struct dwarf2_cu *cu = *ref_cu; |
19815 | struct die_info *die; | |
19816 | ||
36586728 TT |
19817 | die = follow_die_offset (offset, |
19818 | (attr->form == DW_FORM_GNU_ref_alt | |
19819 | || cu->per_cu->is_dwz), | |
19820 | ref_cu); | |
5c631832 JK |
19821 | if (!die) |
19822 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
19823 | "at 0x%x [in module %s]"), | |
4262abfb JK |
19824 | offset.sect_off, src_die->offset.sect_off, |
19825 | objfile_name (cu->objfile)); | |
348e048f | 19826 | |
5c631832 JK |
19827 | return die; |
19828 | } | |
19829 | ||
d83e736b JK |
19830 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
19831 | Returned value is intended for DW_OP_call*. Returned | |
19832 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
19833 | |
19834 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
19835 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
19836 | struct dwarf2_per_cu_data *per_cu, | |
19837 | CORE_ADDR (*get_frame_pc) (void *baton), | |
19838 | void *baton) | |
5c631832 | 19839 | { |
918dd910 | 19840 | struct dwarf2_cu *cu; |
5c631832 JK |
19841 | struct die_info *die; |
19842 | struct attribute *attr; | |
19843 | struct dwarf2_locexpr_baton retval; | |
19844 | ||
8cf6f0b1 TT |
19845 | dw2_setup (per_cu->objfile); |
19846 | ||
918dd910 JK |
19847 | if (per_cu->cu == NULL) |
19848 | load_cu (per_cu); | |
19849 | cu = per_cu->cu; | |
19850 | ||
36586728 | 19851 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
19852 | if (!die) |
19853 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 19854 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
19855 | |
19856 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
19857 | if (!attr) | |
19858 | { | |
e103e986 JK |
19859 | /* DWARF: "If there is no such attribute, then there is no effect.". |
19860 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 19861 | |
e103e986 | 19862 | retval.data = NULL; |
5c631832 JK |
19863 | retval.size = 0; |
19864 | } | |
8cf6f0b1 TT |
19865 | else if (attr_form_is_section_offset (attr)) |
19866 | { | |
19867 | struct dwarf2_loclist_baton loclist_baton; | |
19868 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
19869 | size_t size; | |
19870 | ||
19871 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
19872 | ||
19873 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
19874 | &size, pc); | |
19875 | retval.size = size; | |
19876 | } | |
5c631832 JK |
19877 | else |
19878 | { | |
19879 | if (!attr_form_is_block (attr)) | |
19880 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
19881 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
4262abfb | 19882 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
19883 | |
19884 | retval.data = DW_BLOCK (attr)->data; | |
19885 | retval.size = DW_BLOCK (attr)->size; | |
19886 | } | |
19887 | retval.per_cu = cu->per_cu; | |
918dd910 | 19888 | |
918dd910 JK |
19889 | age_cached_comp_units (); |
19890 | ||
5c631832 | 19891 | return retval; |
348e048f DE |
19892 | } |
19893 | ||
8b9737bf TT |
19894 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
19895 | offset. */ | |
19896 | ||
19897 | struct dwarf2_locexpr_baton | |
19898 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
19899 | struct dwarf2_per_cu_data *per_cu, | |
19900 | CORE_ADDR (*get_frame_pc) (void *baton), | |
19901 | void *baton) | |
19902 | { | |
19903 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
19904 | ||
19905 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
19906 | } | |
19907 | ||
b6807d98 TT |
19908 | /* Write a constant of a given type as target-ordered bytes into |
19909 | OBSTACK. */ | |
19910 | ||
19911 | static const gdb_byte * | |
19912 | write_constant_as_bytes (struct obstack *obstack, | |
19913 | enum bfd_endian byte_order, | |
19914 | struct type *type, | |
19915 | ULONGEST value, | |
19916 | LONGEST *len) | |
19917 | { | |
19918 | gdb_byte *result; | |
19919 | ||
19920 | *len = TYPE_LENGTH (type); | |
19921 | result = obstack_alloc (obstack, *len); | |
19922 | store_unsigned_integer (result, *len, byte_order, value); | |
19923 | ||
19924 | return result; | |
19925 | } | |
19926 | ||
19927 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
19928 | pointer to the constant bytes and set LEN to the length of the | |
19929 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
19930 | does not have a DW_AT_const_value, return NULL. */ | |
19931 | ||
19932 | const gdb_byte * | |
19933 | dwarf2_fetch_constant_bytes (sect_offset offset, | |
19934 | struct dwarf2_per_cu_data *per_cu, | |
19935 | struct obstack *obstack, | |
19936 | LONGEST *len) | |
19937 | { | |
19938 | struct dwarf2_cu *cu; | |
19939 | struct die_info *die; | |
19940 | struct attribute *attr; | |
19941 | const gdb_byte *result = NULL; | |
19942 | struct type *type; | |
19943 | LONGEST value; | |
19944 | enum bfd_endian byte_order; | |
19945 | ||
19946 | dw2_setup (per_cu->objfile); | |
19947 | ||
19948 | if (per_cu->cu == NULL) | |
19949 | load_cu (per_cu); | |
19950 | cu = per_cu->cu; | |
19951 | ||
19952 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); | |
19953 | if (!die) | |
19954 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 19955 | offset.sect_off, objfile_name (per_cu->objfile)); |
b6807d98 TT |
19956 | |
19957 | ||
19958 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
19959 | if (attr == NULL) | |
19960 | return NULL; | |
19961 | ||
19962 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
19963 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
19964 | ||
19965 | switch (attr->form) | |
19966 | { | |
19967 | case DW_FORM_addr: | |
19968 | case DW_FORM_GNU_addr_index: | |
19969 | { | |
19970 | gdb_byte *tem; | |
19971 | ||
19972 | *len = cu->header.addr_size; | |
19973 | tem = obstack_alloc (obstack, *len); | |
19974 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); | |
19975 | result = tem; | |
19976 | } | |
19977 | break; | |
19978 | case DW_FORM_string: | |
19979 | case DW_FORM_strp: | |
19980 | case DW_FORM_GNU_str_index: | |
19981 | case DW_FORM_GNU_strp_alt: | |
19982 | /* DW_STRING is already allocated on the objfile obstack, point | |
19983 | directly to it. */ | |
19984 | result = (const gdb_byte *) DW_STRING (attr); | |
19985 | *len = strlen (DW_STRING (attr)); | |
19986 | break; | |
19987 | case DW_FORM_block1: | |
19988 | case DW_FORM_block2: | |
19989 | case DW_FORM_block4: | |
19990 | case DW_FORM_block: | |
19991 | case DW_FORM_exprloc: | |
19992 | result = DW_BLOCK (attr)->data; | |
19993 | *len = DW_BLOCK (attr)->size; | |
19994 | break; | |
19995 | ||
19996 | /* The DW_AT_const_value attributes are supposed to carry the | |
19997 | symbol's value "represented as it would be on the target | |
19998 | architecture." By the time we get here, it's already been | |
19999 | converted to host endianness, so we just need to sign- or | |
20000 | zero-extend it as appropriate. */ | |
20001 | case DW_FORM_data1: | |
20002 | type = die_type (die, cu); | |
20003 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
20004 | if (result == NULL) | |
20005 | result = write_constant_as_bytes (obstack, byte_order, | |
20006 | type, value, len); | |
20007 | break; | |
20008 | case DW_FORM_data2: | |
20009 | type = die_type (die, cu); | |
20010 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
20011 | if (result == NULL) | |
20012 | result = write_constant_as_bytes (obstack, byte_order, | |
20013 | type, value, len); | |
20014 | break; | |
20015 | case DW_FORM_data4: | |
20016 | type = die_type (die, cu); | |
20017 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
20018 | if (result == NULL) | |
20019 | result = write_constant_as_bytes (obstack, byte_order, | |
20020 | type, value, len); | |
20021 | break; | |
20022 | case DW_FORM_data8: | |
20023 | type = die_type (die, cu); | |
20024 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
20025 | if (result == NULL) | |
20026 | result = write_constant_as_bytes (obstack, byte_order, | |
20027 | type, value, len); | |
20028 | break; | |
20029 | ||
20030 | case DW_FORM_sdata: | |
20031 | type = die_type (die, cu); | |
20032 | result = write_constant_as_bytes (obstack, byte_order, | |
20033 | type, DW_SND (attr), len); | |
20034 | break; | |
20035 | ||
20036 | case DW_FORM_udata: | |
20037 | type = die_type (die, cu); | |
20038 | result = write_constant_as_bytes (obstack, byte_order, | |
20039 | type, DW_UNSND (attr), len); | |
20040 | break; | |
20041 | ||
20042 | default: | |
20043 | complaint (&symfile_complaints, | |
20044 | _("unsupported const value attribute form: '%s'"), | |
20045 | dwarf_form_name (attr->form)); | |
20046 | break; | |
20047 | } | |
20048 | ||
20049 | return result; | |
20050 | } | |
20051 | ||
8a9b8146 TT |
20052 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
20053 | PER_CU. */ | |
20054 | ||
20055 | struct type * | |
b64f50a1 | 20056 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
20057 | struct dwarf2_per_cu_data *per_cu) |
20058 | { | |
b64f50a1 JK |
20059 | sect_offset die_offset_sect; |
20060 | ||
8a9b8146 | 20061 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
20062 | |
20063 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
20064 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
20065 | } |
20066 | ||
ac9ec31b | 20067 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 20068 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
20069 | On exit *REF_CU is the CU of the result. |
20070 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
20071 | |
20072 | static struct die_info * | |
ac9ec31b DE |
20073 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
20074 | struct dwarf2_cu **ref_cu) | |
348e048f DE |
20075 | { |
20076 | struct objfile *objfile = (*ref_cu)->objfile; | |
20077 | struct die_info temp_die; | |
348e048f DE |
20078 | struct dwarf2_cu *sig_cu; |
20079 | struct die_info *die; | |
20080 | ||
ac9ec31b DE |
20081 | /* While it might be nice to assert sig_type->type == NULL here, |
20082 | we can get here for DW_AT_imported_declaration where we need | |
20083 | the DIE not the type. */ | |
348e048f DE |
20084 | |
20085 | /* If necessary, add it to the queue and load its DIEs. */ | |
20086 | ||
95554aad | 20087 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 20088 | read_signatured_type (sig_type); |
348e048f | 20089 | |
348e048f | 20090 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 20091 | gdb_assert (sig_cu != NULL); |
3019eac3 DE |
20092 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
20093 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
20094 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
20095 | temp_die.offset.sect_off); | |
348e048f DE |
20096 | if (die) |
20097 | { | |
796a7ff8 DE |
20098 | /* For .gdb_index version 7 keep track of included TUs. |
20099 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
20100 | if (dwarf2_per_objfile->index_table != NULL | |
20101 | && dwarf2_per_objfile->index_table->version <= 7) | |
20102 | { | |
20103 | VEC_safe_push (dwarf2_per_cu_ptr, | |
20104 | (*ref_cu)->per_cu->imported_symtabs, | |
20105 | sig_cu->per_cu); | |
20106 | } | |
20107 | ||
348e048f DE |
20108 | *ref_cu = sig_cu; |
20109 | return die; | |
20110 | } | |
20111 | ||
ac9ec31b DE |
20112 | return NULL; |
20113 | } | |
20114 | ||
20115 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
20116 | On entry *REF_CU is the CU of SRC_DIE. | |
20117 | On exit *REF_CU is the CU of the result. | |
20118 | The result is the DIE of the type. | |
20119 | If the referenced type cannot be found an error is thrown. */ | |
20120 | ||
20121 | static struct die_info * | |
ff39bb5e | 20122 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
20123 | struct dwarf2_cu **ref_cu) |
20124 | { | |
20125 | ULONGEST signature = DW_SIGNATURE (attr); | |
20126 | struct signatured_type *sig_type; | |
20127 | struct die_info *die; | |
20128 | ||
20129 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
20130 | ||
a2ce51a0 | 20131 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
20132 | /* sig_type will be NULL if the signatured type is missing from |
20133 | the debug info. */ | |
20134 | if (sig_type == NULL) | |
20135 | { | |
20136 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20137 | " from DIE at 0x%x [in module %s]"), | |
20138 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20139 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20140 | } |
20141 | ||
20142 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
20143 | if (die == NULL) | |
20144 | { | |
20145 | dump_die_for_error (src_die); | |
20146 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20147 | " from DIE at 0x%x [in module %s]"), | |
20148 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20149 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20150 | } |
20151 | ||
20152 | return die; | |
20153 | } | |
20154 | ||
20155 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
20156 | reading in and processing the type unit if necessary. */ | |
20157 | ||
20158 | static struct type * | |
20159 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
20160 | struct dwarf2_cu *cu) | |
20161 | { | |
20162 | struct signatured_type *sig_type; | |
20163 | struct dwarf2_cu *type_cu; | |
20164 | struct die_info *type_die; | |
20165 | struct type *type; | |
20166 | ||
a2ce51a0 | 20167 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
20168 | /* sig_type will be NULL if the signatured type is missing from |
20169 | the debug info. */ | |
20170 | if (sig_type == NULL) | |
20171 | { | |
20172 | complaint (&symfile_complaints, | |
20173 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20174 | " from DIE at 0x%x [in module %s]"), | |
20175 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20176 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20177 | return build_error_marker_type (cu, die); |
20178 | } | |
20179 | ||
20180 | /* If we already know the type we're done. */ | |
20181 | if (sig_type->type != NULL) | |
20182 | return sig_type->type; | |
20183 | ||
20184 | type_cu = cu; | |
20185 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
20186 | if (type_die != NULL) | |
20187 | { | |
20188 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
20189 | is created. This is important, for example, because for c++ classes | |
20190 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
20191 | type = read_type_die (type_die, type_cu); | |
20192 | if (type == NULL) | |
20193 | { | |
20194 | complaint (&symfile_complaints, | |
20195 | _("Dwarf Error: Cannot build signatured type %s" | |
20196 | " referenced from DIE at 0x%x [in module %s]"), | |
20197 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20198 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20199 | type = build_error_marker_type (cu, die); |
20200 | } | |
20201 | } | |
20202 | else | |
20203 | { | |
20204 | complaint (&symfile_complaints, | |
20205 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20206 | " from DIE at 0x%x [in module %s]"), | |
20207 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20208 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20209 | type = build_error_marker_type (cu, die); |
20210 | } | |
20211 | sig_type->type = type; | |
20212 | ||
20213 | return type; | |
20214 | } | |
20215 | ||
20216 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
20217 | reading in and processing the type unit if necessary. */ | |
20218 | ||
20219 | static struct type * | |
ff39bb5e | 20220 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 20221 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
20222 | { |
20223 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 20224 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
20225 | { |
20226 | struct dwarf2_cu *type_cu = cu; | |
20227 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
20228 | ||
20229 | return read_type_die (type_die, type_cu); | |
20230 | } | |
20231 | else if (attr->form == DW_FORM_ref_sig8) | |
20232 | { | |
20233 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
20234 | } | |
20235 | else | |
20236 | { | |
20237 | complaint (&symfile_complaints, | |
20238 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
20239 | " at 0x%x [in module %s]"), | |
20240 | dwarf_form_name (attr->form), die->offset.sect_off, | |
4262abfb | 20241 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20242 | return build_error_marker_type (cu, die); |
20243 | } | |
348e048f DE |
20244 | } |
20245 | ||
e5fe5e75 | 20246 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
20247 | |
20248 | static void | |
e5fe5e75 | 20249 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 20250 | { |
52dc124a | 20251 | struct signatured_type *sig_type; |
348e048f | 20252 | |
f4dc4d17 DE |
20253 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
20254 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
20255 | ||
6721b2ec DE |
20256 | /* We have the per_cu, but we need the signatured_type. |
20257 | Fortunately this is an easy translation. */ | |
20258 | gdb_assert (per_cu->is_debug_types); | |
20259 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 20260 | |
6721b2ec | 20261 | gdb_assert (per_cu->cu == NULL); |
348e048f | 20262 | |
52dc124a | 20263 | read_signatured_type (sig_type); |
348e048f | 20264 | |
6721b2ec | 20265 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
20266 | } |
20267 | ||
dee91e82 DE |
20268 | /* die_reader_func for read_signatured_type. |
20269 | This is identical to load_full_comp_unit_reader, | |
20270 | but is kept separate for now. */ | |
348e048f DE |
20271 | |
20272 | static void | |
dee91e82 | 20273 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 20274 | const gdb_byte *info_ptr, |
dee91e82 DE |
20275 | struct die_info *comp_unit_die, |
20276 | int has_children, | |
20277 | void *data) | |
348e048f | 20278 | { |
dee91e82 | 20279 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 20280 | |
dee91e82 DE |
20281 | gdb_assert (cu->die_hash == NULL); |
20282 | cu->die_hash = | |
20283 | htab_create_alloc_ex (cu->header.length / 12, | |
20284 | die_hash, | |
20285 | die_eq, | |
20286 | NULL, | |
20287 | &cu->comp_unit_obstack, | |
20288 | hashtab_obstack_allocate, | |
20289 | dummy_obstack_deallocate); | |
348e048f | 20290 | |
dee91e82 DE |
20291 | if (has_children) |
20292 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
20293 | &info_ptr, comp_unit_die); | |
20294 | cu->dies = comp_unit_die; | |
20295 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
20296 | |
20297 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 20298 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 20299 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
20300 | or we won't be able to build types correctly. |
20301 | Similarly, if we do not read the producer, we can not apply | |
20302 | producer-specific interpretation. */ | |
95554aad | 20303 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 20304 | } |
348e048f | 20305 | |
3019eac3 DE |
20306 | /* Read in a signatured type and build its CU and DIEs. |
20307 | If the type is a stub for the real type in a DWO file, | |
20308 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
20309 | |
20310 | static void | |
20311 | read_signatured_type (struct signatured_type *sig_type) | |
20312 | { | |
20313 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 20314 | |
3019eac3 | 20315 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 20316 | gdb_assert (per_cu->cu == NULL); |
348e048f | 20317 | |
f4dc4d17 DE |
20318 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
20319 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 20320 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
20321 | } |
20322 | ||
c906108c SS |
20323 | /* Decode simple location descriptions. |
20324 | Given a pointer to a dwarf block that defines a location, compute | |
20325 | the location and return the value. | |
20326 | ||
4cecd739 DJ |
20327 | NOTE drow/2003-11-18: This function is called in two situations |
20328 | now: for the address of static or global variables (partial symbols | |
20329 | only) and for offsets into structures which are expected to be | |
20330 | (more or less) constant. The partial symbol case should go away, | |
20331 | and only the constant case should remain. That will let this | |
20332 | function complain more accurately. A few special modes are allowed | |
20333 | without complaint for global variables (for instance, global | |
20334 | register values and thread-local values). | |
c906108c SS |
20335 | |
20336 | A location description containing no operations indicates that the | |
4cecd739 | 20337 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
20338 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
20339 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
20340 | complaint. |
20341 | ||
20342 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
20343 | |
20344 | static CORE_ADDR | |
e7c27a73 | 20345 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 20346 | { |
e7c27a73 | 20347 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
20348 | size_t i; |
20349 | size_t size = blk->size; | |
d521ce57 | 20350 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
20351 | CORE_ADDR stack[64]; |
20352 | int stacki; | |
20353 | unsigned int bytes_read, unsnd; | |
20354 | gdb_byte op; | |
c906108c | 20355 | |
21ae7a4d JK |
20356 | i = 0; |
20357 | stacki = 0; | |
20358 | stack[stacki] = 0; | |
20359 | stack[++stacki] = 0; | |
20360 | ||
20361 | while (i < size) | |
20362 | { | |
20363 | op = data[i++]; | |
20364 | switch (op) | |
20365 | { | |
20366 | case DW_OP_lit0: | |
20367 | case DW_OP_lit1: | |
20368 | case DW_OP_lit2: | |
20369 | case DW_OP_lit3: | |
20370 | case DW_OP_lit4: | |
20371 | case DW_OP_lit5: | |
20372 | case DW_OP_lit6: | |
20373 | case DW_OP_lit7: | |
20374 | case DW_OP_lit8: | |
20375 | case DW_OP_lit9: | |
20376 | case DW_OP_lit10: | |
20377 | case DW_OP_lit11: | |
20378 | case DW_OP_lit12: | |
20379 | case DW_OP_lit13: | |
20380 | case DW_OP_lit14: | |
20381 | case DW_OP_lit15: | |
20382 | case DW_OP_lit16: | |
20383 | case DW_OP_lit17: | |
20384 | case DW_OP_lit18: | |
20385 | case DW_OP_lit19: | |
20386 | case DW_OP_lit20: | |
20387 | case DW_OP_lit21: | |
20388 | case DW_OP_lit22: | |
20389 | case DW_OP_lit23: | |
20390 | case DW_OP_lit24: | |
20391 | case DW_OP_lit25: | |
20392 | case DW_OP_lit26: | |
20393 | case DW_OP_lit27: | |
20394 | case DW_OP_lit28: | |
20395 | case DW_OP_lit29: | |
20396 | case DW_OP_lit30: | |
20397 | case DW_OP_lit31: | |
20398 | stack[++stacki] = op - DW_OP_lit0; | |
20399 | break; | |
f1bea926 | 20400 | |
21ae7a4d JK |
20401 | case DW_OP_reg0: |
20402 | case DW_OP_reg1: | |
20403 | case DW_OP_reg2: | |
20404 | case DW_OP_reg3: | |
20405 | case DW_OP_reg4: | |
20406 | case DW_OP_reg5: | |
20407 | case DW_OP_reg6: | |
20408 | case DW_OP_reg7: | |
20409 | case DW_OP_reg8: | |
20410 | case DW_OP_reg9: | |
20411 | case DW_OP_reg10: | |
20412 | case DW_OP_reg11: | |
20413 | case DW_OP_reg12: | |
20414 | case DW_OP_reg13: | |
20415 | case DW_OP_reg14: | |
20416 | case DW_OP_reg15: | |
20417 | case DW_OP_reg16: | |
20418 | case DW_OP_reg17: | |
20419 | case DW_OP_reg18: | |
20420 | case DW_OP_reg19: | |
20421 | case DW_OP_reg20: | |
20422 | case DW_OP_reg21: | |
20423 | case DW_OP_reg22: | |
20424 | case DW_OP_reg23: | |
20425 | case DW_OP_reg24: | |
20426 | case DW_OP_reg25: | |
20427 | case DW_OP_reg26: | |
20428 | case DW_OP_reg27: | |
20429 | case DW_OP_reg28: | |
20430 | case DW_OP_reg29: | |
20431 | case DW_OP_reg30: | |
20432 | case DW_OP_reg31: | |
20433 | stack[++stacki] = op - DW_OP_reg0; | |
20434 | if (i < size) | |
20435 | dwarf2_complex_location_expr_complaint (); | |
20436 | break; | |
c906108c | 20437 | |
21ae7a4d JK |
20438 | case DW_OP_regx: |
20439 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
20440 | i += bytes_read; | |
20441 | stack[++stacki] = unsnd; | |
20442 | if (i < size) | |
20443 | dwarf2_complex_location_expr_complaint (); | |
20444 | break; | |
c906108c | 20445 | |
21ae7a4d JK |
20446 | case DW_OP_addr: |
20447 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
20448 | cu, &bytes_read); | |
20449 | i += bytes_read; | |
20450 | break; | |
d53d4ac5 | 20451 | |
21ae7a4d JK |
20452 | case DW_OP_const1u: |
20453 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
20454 | i += 1; | |
20455 | break; | |
20456 | ||
20457 | case DW_OP_const1s: | |
20458 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
20459 | i += 1; | |
20460 | break; | |
20461 | ||
20462 | case DW_OP_const2u: | |
20463 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
20464 | i += 2; | |
20465 | break; | |
20466 | ||
20467 | case DW_OP_const2s: | |
20468 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
20469 | i += 2; | |
20470 | break; | |
d53d4ac5 | 20471 | |
21ae7a4d JK |
20472 | case DW_OP_const4u: |
20473 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
20474 | i += 4; | |
20475 | break; | |
20476 | ||
20477 | case DW_OP_const4s: | |
20478 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
20479 | i += 4; | |
20480 | break; | |
20481 | ||
585861ea JK |
20482 | case DW_OP_const8u: |
20483 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
20484 | i += 8; | |
20485 | break; | |
20486 | ||
21ae7a4d JK |
20487 | case DW_OP_constu: |
20488 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
20489 | &bytes_read); | |
20490 | i += bytes_read; | |
20491 | break; | |
20492 | ||
20493 | case DW_OP_consts: | |
20494 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
20495 | i += bytes_read; | |
20496 | break; | |
20497 | ||
20498 | case DW_OP_dup: | |
20499 | stack[stacki + 1] = stack[stacki]; | |
20500 | stacki++; | |
20501 | break; | |
20502 | ||
20503 | case DW_OP_plus: | |
20504 | stack[stacki - 1] += stack[stacki]; | |
20505 | stacki--; | |
20506 | break; | |
20507 | ||
20508 | case DW_OP_plus_uconst: | |
20509 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
20510 | &bytes_read); | |
20511 | i += bytes_read; | |
20512 | break; | |
20513 | ||
20514 | case DW_OP_minus: | |
20515 | stack[stacki - 1] -= stack[stacki]; | |
20516 | stacki--; | |
20517 | break; | |
20518 | ||
20519 | case DW_OP_deref: | |
20520 | /* If we're not the last op, then we definitely can't encode | |
20521 | this using GDB's address_class enum. This is valid for partial | |
20522 | global symbols, although the variable's address will be bogus | |
20523 | in the psymtab. */ | |
20524 | if (i < size) | |
20525 | dwarf2_complex_location_expr_complaint (); | |
20526 | break; | |
20527 | ||
20528 | case DW_OP_GNU_push_tls_address: | |
20529 | /* The top of the stack has the offset from the beginning | |
20530 | of the thread control block at which the variable is located. */ | |
20531 | /* Nothing should follow this operator, so the top of stack would | |
20532 | be returned. */ | |
20533 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
20534 | address will be bogus in the psymtab. Make it always at least |
20535 | non-zero to not look as a variable garbage collected by linker | |
20536 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
20537 | if (i < size) |
20538 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 20539 | stack[stacki]++; |
21ae7a4d JK |
20540 | break; |
20541 | ||
20542 | case DW_OP_GNU_uninit: | |
20543 | break; | |
20544 | ||
3019eac3 | 20545 | case DW_OP_GNU_addr_index: |
49f6c839 | 20546 | case DW_OP_GNU_const_index: |
3019eac3 DE |
20547 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
20548 | &bytes_read); | |
20549 | i += bytes_read; | |
20550 | break; | |
20551 | ||
21ae7a4d JK |
20552 | default: |
20553 | { | |
f39c6ffd | 20554 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
20555 | |
20556 | if (name) | |
20557 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
20558 | name); | |
20559 | else | |
20560 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
20561 | op); | |
20562 | } | |
20563 | ||
20564 | return (stack[stacki]); | |
d53d4ac5 | 20565 | } |
3c6e0cb3 | 20566 | |
21ae7a4d JK |
20567 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
20568 | outside of the allocated space. Also enforce minimum>0. */ | |
20569 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
20570 | { | |
20571 | complaint (&symfile_complaints, | |
20572 | _("location description stack overflow")); | |
20573 | return 0; | |
20574 | } | |
20575 | ||
20576 | if (stacki <= 0) | |
20577 | { | |
20578 | complaint (&symfile_complaints, | |
20579 | _("location description stack underflow")); | |
20580 | return 0; | |
20581 | } | |
20582 | } | |
20583 | return (stack[stacki]); | |
c906108c SS |
20584 | } |
20585 | ||
20586 | /* memory allocation interface */ | |
20587 | ||
c906108c | 20588 | static struct dwarf_block * |
7b5a2f43 | 20589 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
20590 | { |
20591 | struct dwarf_block *blk; | |
20592 | ||
20593 | blk = (struct dwarf_block *) | |
7b5a2f43 | 20594 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
20595 | return (blk); |
20596 | } | |
20597 | ||
c906108c | 20598 | static struct die_info * |
b60c80d6 | 20599 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
20600 | { |
20601 | struct die_info *die; | |
b60c80d6 DJ |
20602 | size_t size = sizeof (struct die_info); |
20603 | ||
20604 | if (num_attrs > 1) | |
20605 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 20606 | |
b60c80d6 | 20607 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
20608 | memset (die, 0, sizeof (struct die_info)); |
20609 | return (die); | |
20610 | } | |
2e276125 JB |
20611 | |
20612 | \f | |
20613 | /* Macro support. */ | |
20614 | ||
233d95b5 JK |
20615 | /* Return file name relative to the compilation directory of file number I in |
20616 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 20617 | responsible for freeing it. */ |
233d95b5 | 20618 | |
2e276125 | 20619 | static char * |
233d95b5 | 20620 | file_file_name (int file, struct line_header *lh) |
2e276125 | 20621 | { |
6a83a1e6 EZ |
20622 | /* Is the file number a valid index into the line header's file name |
20623 | table? Remember that file numbers start with one, not zero. */ | |
20624 | if (1 <= file && file <= lh->num_file_names) | |
20625 | { | |
20626 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 20627 | |
233d95b5 | 20628 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0) |
6a83a1e6 | 20629 | return xstrdup (fe->name); |
233d95b5 JK |
20630 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
20631 | fe->name, NULL); | |
6a83a1e6 | 20632 | } |
2e276125 JB |
20633 | else |
20634 | { | |
6a83a1e6 EZ |
20635 | /* The compiler produced a bogus file number. We can at least |
20636 | record the macro definitions made in the file, even if we | |
20637 | won't be able to find the file by name. */ | |
20638 | char fake_name[80]; | |
9a619af0 | 20639 | |
8c042590 PM |
20640 | xsnprintf (fake_name, sizeof (fake_name), |
20641 | "<bad macro file number %d>", file); | |
2e276125 | 20642 | |
6e70227d | 20643 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
20644 | _("bad file number in macro information (%d)"), |
20645 | file); | |
2e276125 | 20646 | |
6a83a1e6 | 20647 | return xstrdup (fake_name); |
2e276125 JB |
20648 | } |
20649 | } | |
20650 | ||
233d95b5 JK |
20651 | /* Return the full name of file number I in *LH's file name table. |
20652 | Use COMP_DIR as the name of the current directory of the | |
20653 | compilation. The result is allocated using xmalloc; the caller is | |
20654 | responsible for freeing it. */ | |
20655 | static char * | |
20656 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
20657 | { | |
20658 | /* Is the file number a valid index into the line header's file name | |
20659 | table? Remember that file numbers start with one, not zero. */ | |
20660 | if (1 <= file && file <= lh->num_file_names) | |
20661 | { | |
20662 | char *relative = file_file_name (file, lh); | |
20663 | ||
20664 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
20665 | return relative; | |
20666 | return reconcat (relative, comp_dir, SLASH_STRING, relative, NULL); | |
20667 | } | |
20668 | else | |
20669 | return file_file_name (file, lh); | |
20670 | } | |
20671 | ||
2e276125 JB |
20672 | |
20673 | static struct macro_source_file * | |
20674 | macro_start_file (int file, int line, | |
20675 | struct macro_source_file *current_file, | |
43f3e411 | 20676 | struct line_header *lh) |
2e276125 | 20677 | { |
233d95b5 JK |
20678 | /* File name relative to the compilation directory of this source file. */ |
20679 | char *file_name = file_file_name (file, lh); | |
2e276125 | 20680 | |
2e276125 | 20681 | if (! current_file) |
abc9d0dc | 20682 | { |
fc474241 DE |
20683 | /* Note: We don't create a macro table for this compilation unit |
20684 | at all until we actually get a filename. */ | |
43f3e411 | 20685 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 20686 | |
abc9d0dc TT |
20687 | /* If we have no current file, then this must be the start_file |
20688 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
20689 | current_file = macro_set_main (macro_table, file_name); |
20690 | macro_define_special (macro_table); | |
abc9d0dc | 20691 | } |
2e276125 | 20692 | else |
233d95b5 | 20693 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 20694 | |
233d95b5 | 20695 | xfree (file_name); |
6e70227d | 20696 | |
2e276125 JB |
20697 | return current_file; |
20698 | } | |
20699 | ||
20700 | ||
20701 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
20702 | followed by a null byte. */ | |
20703 | static char * | |
20704 | copy_string (const char *buf, int len) | |
20705 | { | |
20706 | char *s = xmalloc (len + 1); | |
9a619af0 | 20707 | |
2e276125 JB |
20708 | memcpy (s, buf, len); |
20709 | s[len] = '\0'; | |
2e276125 JB |
20710 | return s; |
20711 | } | |
20712 | ||
20713 | ||
20714 | static const char * | |
20715 | consume_improper_spaces (const char *p, const char *body) | |
20716 | { | |
20717 | if (*p == ' ') | |
20718 | { | |
4d3c2250 | 20719 | complaint (&symfile_complaints, |
3e43a32a MS |
20720 | _("macro definition contains spaces " |
20721 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 20722 | body); |
2e276125 JB |
20723 | |
20724 | while (*p == ' ') | |
20725 | p++; | |
20726 | } | |
20727 | ||
20728 | return p; | |
20729 | } | |
20730 | ||
20731 | ||
20732 | static void | |
20733 | parse_macro_definition (struct macro_source_file *file, int line, | |
20734 | const char *body) | |
20735 | { | |
20736 | const char *p; | |
20737 | ||
20738 | /* The body string takes one of two forms. For object-like macro | |
20739 | definitions, it should be: | |
20740 | ||
20741 | <macro name> " " <definition> | |
20742 | ||
20743 | For function-like macro definitions, it should be: | |
20744 | ||
20745 | <macro name> "() " <definition> | |
20746 | or | |
20747 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
20748 | ||
20749 | Spaces may appear only where explicitly indicated, and in the | |
20750 | <definition>. | |
20751 | ||
20752 | The Dwarf 2 spec says that an object-like macro's name is always | |
20753 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 20754 | the space when the macro's definition is the empty string. |
2e276125 JB |
20755 | |
20756 | The Dwarf 2 spec says that there should be no spaces between the | |
20757 | formal arguments in a function-like macro's formal argument list, | |
20758 | but versions of GCC around March 2002 include spaces after the | |
20759 | commas. */ | |
20760 | ||
20761 | ||
20762 | /* Find the extent of the macro name. The macro name is terminated | |
20763 | by either a space or null character (for an object-like macro) or | |
20764 | an opening paren (for a function-like macro). */ | |
20765 | for (p = body; *p; p++) | |
20766 | if (*p == ' ' || *p == '(') | |
20767 | break; | |
20768 | ||
20769 | if (*p == ' ' || *p == '\0') | |
20770 | { | |
20771 | /* It's an object-like macro. */ | |
20772 | int name_len = p - body; | |
20773 | char *name = copy_string (body, name_len); | |
20774 | const char *replacement; | |
20775 | ||
20776 | if (*p == ' ') | |
20777 | replacement = body + name_len + 1; | |
20778 | else | |
20779 | { | |
4d3c2250 | 20780 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20781 | replacement = body + name_len; |
20782 | } | |
6e70227d | 20783 | |
2e276125 JB |
20784 | macro_define_object (file, line, name, replacement); |
20785 | ||
20786 | xfree (name); | |
20787 | } | |
20788 | else if (*p == '(') | |
20789 | { | |
20790 | /* It's a function-like macro. */ | |
20791 | char *name = copy_string (body, p - body); | |
20792 | int argc = 0; | |
20793 | int argv_size = 1; | |
20794 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
20795 | ||
20796 | p++; | |
20797 | ||
20798 | p = consume_improper_spaces (p, body); | |
20799 | ||
20800 | /* Parse the formal argument list. */ | |
20801 | while (*p && *p != ')') | |
20802 | { | |
20803 | /* Find the extent of the current argument name. */ | |
20804 | const char *arg_start = p; | |
20805 | ||
20806 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
20807 | p++; | |
20808 | ||
20809 | if (! *p || p == arg_start) | |
4d3c2250 | 20810 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20811 | else |
20812 | { | |
20813 | /* Make sure argv has room for the new argument. */ | |
20814 | if (argc >= argv_size) | |
20815 | { | |
20816 | argv_size *= 2; | |
20817 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
20818 | } | |
20819 | ||
20820 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
20821 | } | |
20822 | ||
20823 | p = consume_improper_spaces (p, body); | |
20824 | ||
20825 | /* Consume the comma, if present. */ | |
20826 | if (*p == ',') | |
20827 | { | |
20828 | p++; | |
20829 | ||
20830 | p = consume_improper_spaces (p, body); | |
20831 | } | |
20832 | } | |
20833 | ||
20834 | if (*p == ')') | |
20835 | { | |
20836 | p++; | |
20837 | ||
20838 | if (*p == ' ') | |
20839 | /* Perfectly formed definition, no complaints. */ | |
20840 | macro_define_function (file, line, name, | |
6e70227d | 20841 | argc, (const char **) argv, |
2e276125 JB |
20842 | p + 1); |
20843 | else if (*p == '\0') | |
20844 | { | |
20845 | /* Complain, but do define it. */ | |
4d3c2250 | 20846 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 20847 | macro_define_function (file, line, name, |
6e70227d | 20848 | argc, (const char **) argv, |
2e276125 JB |
20849 | p); |
20850 | } | |
20851 | else | |
20852 | /* Just complain. */ | |
4d3c2250 | 20853 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20854 | } |
20855 | else | |
20856 | /* Just complain. */ | |
4d3c2250 | 20857 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20858 | |
20859 | xfree (name); | |
20860 | { | |
20861 | int i; | |
20862 | ||
20863 | for (i = 0; i < argc; i++) | |
20864 | xfree (argv[i]); | |
20865 | } | |
20866 | xfree (argv); | |
20867 | } | |
20868 | else | |
4d3c2250 | 20869 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20870 | } |
20871 | ||
cf2c3c16 TT |
20872 | /* Skip some bytes from BYTES according to the form given in FORM. |
20873 | Returns the new pointer. */ | |
2e276125 | 20874 | |
d521ce57 TT |
20875 | static const gdb_byte * |
20876 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
20877 | enum dwarf_form form, |
20878 | unsigned int offset_size, | |
20879 | struct dwarf2_section_info *section) | |
2e276125 | 20880 | { |
cf2c3c16 | 20881 | unsigned int bytes_read; |
2e276125 | 20882 | |
cf2c3c16 | 20883 | switch (form) |
2e276125 | 20884 | { |
cf2c3c16 TT |
20885 | case DW_FORM_data1: |
20886 | case DW_FORM_flag: | |
20887 | ++bytes; | |
20888 | break; | |
20889 | ||
20890 | case DW_FORM_data2: | |
20891 | bytes += 2; | |
20892 | break; | |
20893 | ||
20894 | case DW_FORM_data4: | |
20895 | bytes += 4; | |
20896 | break; | |
20897 | ||
20898 | case DW_FORM_data8: | |
20899 | bytes += 8; | |
20900 | break; | |
20901 | ||
20902 | case DW_FORM_string: | |
20903 | read_direct_string (abfd, bytes, &bytes_read); | |
20904 | bytes += bytes_read; | |
20905 | break; | |
20906 | ||
20907 | case DW_FORM_sec_offset: | |
20908 | case DW_FORM_strp: | |
36586728 | 20909 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
20910 | bytes += offset_size; |
20911 | break; | |
20912 | ||
20913 | case DW_FORM_block: | |
20914 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
20915 | bytes += bytes_read; | |
20916 | break; | |
20917 | ||
20918 | case DW_FORM_block1: | |
20919 | bytes += 1 + read_1_byte (abfd, bytes); | |
20920 | break; | |
20921 | case DW_FORM_block2: | |
20922 | bytes += 2 + read_2_bytes (abfd, bytes); | |
20923 | break; | |
20924 | case DW_FORM_block4: | |
20925 | bytes += 4 + read_4_bytes (abfd, bytes); | |
20926 | break; | |
20927 | ||
20928 | case DW_FORM_sdata: | |
20929 | case DW_FORM_udata: | |
3019eac3 DE |
20930 | case DW_FORM_GNU_addr_index: |
20931 | case DW_FORM_GNU_str_index: | |
d521ce57 | 20932 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
20933 | if (bytes == NULL) |
20934 | { | |
20935 | dwarf2_section_buffer_overflow_complaint (section); | |
20936 | return NULL; | |
20937 | } | |
cf2c3c16 TT |
20938 | break; |
20939 | ||
20940 | default: | |
20941 | { | |
20942 | complain: | |
20943 | complaint (&symfile_complaints, | |
20944 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 20945 | form, get_section_name (section)); |
cf2c3c16 TT |
20946 | return NULL; |
20947 | } | |
2e276125 JB |
20948 | } |
20949 | ||
cf2c3c16 TT |
20950 | return bytes; |
20951 | } | |
757a13d0 | 20952 | |
cf2c3c16 TT |
20953 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
20954 | opcode. Returns an updated pointer to the macro data buffer; or, | |
20955 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 20956 | |
d521ce57 | 20957 | static const gdb_byte * |
cf2c3c16 | 20958 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
20959 | const gdb_byte **opcode_definitions, |
20960 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
20961 | bfd *abfd, |
20962 | unsigned int offset_size, | |
20963 | struct dwarf2_section_info *section) | |
20964 | { | |
20965 | unsigned int bytes_read, i; | |
20966 | unsigned long arg; | |
d521ce57 | 20967 | const gdb_byte *defn; |
2e276125 | 20968 | |
cf2c3c16 | 20969 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 20970 | { |
cf2c3c16 TT |
20971 | complaint (&symfile_complaints, |
20972 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
20973 | opcode); | |
20974 | return NULL; | |
20975 | } | |
2e276125 | 20976 | |
cf2c3c16 TT |
20977 | defn = opcode_definitions[opcode]; |
20978 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
20979 | defn += bytes_read; | |
2e276125 | 20980 | |
cf2c3c16 TT |
20981 | for (i = 0; i < arg; ++i) |
20982 | { | |
f664829e DE |
20983 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
20984 | section); | |
cf2c3c16 TT |
20985 | if (mac_ptr == NULL) |
20986 | { | |
20987 | /* skip_form_bytes already issued the complaint. */ | |
20988 | return NULL; | |
20989 | } | |
20990 | } | |
757a13d0 | 20991 | |
cf2c3c16 TT |
20992 | return mac_ptr; |
20993 | } | |
757a13d0 | 20994 | |
cf2c3c16 TT |
20995 | /* A helper function which parses the header of a macro section. |
20996 | If the macro section is the extended (for now called "GNU") type, | |
20997 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
20998 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 20999 | |
d521ce57 TT |
21000 | static const gdb_byte * |
21001 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 21002 | bfd *abfd, |
d521ce57 | 21003 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
21004 | unsigned int *offset_size, |
21005 | int section_is_gnu) | |
21006 | { | |
21007 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 21008 | |
cf2c3c16 TT |
21009 | if (section_is_gnu) |
21010 | { | |
21011 | unsigned int version, flags; | |
757a13d0 | 21012 | |
cf2c3c16 TT |
21013 | version = read_2_bytes (abfd, mac_ptr); |
21014 | if (version != 4) | |
21015 | { | |
21016 | complaint (&symfile_complaints, | |
21017 | _("unrecognized version `%d' in .debug_macro section"), | |
21018 | version); | |
21019 | return NULL; | |
21020 | } | |
21021 | mac_ptr += 2; | |
757a13d0 | 21022 | |
cf2c3c16 TT |
21023 | flags = read_1_byte (abfd, mac_ptr); |
21024 | ++mac_ptr; | |
21025 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 21026 | |
cf2c3c16 TT |
21027 | if ((flags & 2) != 0) |
21028 | /* We don't need the line table offset. */ | |
21029 | mac_ptr += *offset_size; | |
757a13d0 | 21030 | |
cf2c3c16 TT |
21031 | /* Vendor opcode descriptions. */ |
21032 | if ((flags & 4) != 0) | |
21033 | { | |
21034 | unsigned int i, count; | |
757a13d0 | 21035 | |
cf2c3c16 TT |
21036 | count = read_1_byte (abfd, mac_ptr); |
21037 | ++mac_ptr; | |
21038 | for (i = 0; i < count; ++i) | |
21039 | { | |
21040 | unsigned int opcode, bytes_read; | |
21041 | unsigned long arg; | |
21042 | ||
21043 | opcode = read_1_byte (abfd, mac_ptr); | |
21044 | ++mac_ptr; | |
21045 | opcode_definitions[opcode] = mac_ptr; | |
21046 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21047 | mac_ptr += bytes_read; | |
21048 | mac_ptr += arg; | |
21049 | } | |
757a13d0 | 21050 | } |
cf2c3c16 | 21051 | } |
757a13d0 | 21052 | |
cf2c3c16 TT |
21053 | return mac_ptr; |
21054 | } | |
757a13d0 | 21055 | |
cf2c3c16 | 21056 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 21057 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
21058 | |
21059 | static void | |
d521ce57 TT |
21060 | dwarf_decode_macro_bytes (bfd *abfd, |
21061 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 21062 | struct macro_source_file *current_file, |
43f3e411 | 21063 | struct line_header *lh, |
cf2c3c16 | 21064 | struct dwarf2_section_info *section, |
36586728 | 21065 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 21066 | unsigned int offset_size, |
8fc3fc34 | 21067 | htab_t include_hash) |
cf2c3c16 | 21068 | { |
4d663531 | 21069 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
21070 | enum dwarf_macro_record_type macinfo_type; |
21071 | int at_commandline; | |
d521ce57 | 21072 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 21073 | |
cf2c3c16 TT |
21074 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
21075 | &offset_size, section_is_gnu); | |
21076 | if (mac_ptr == NULL) | |
21077 | { | |
21078 | /* We already issued a complaint. */ | |
21079 | return; | |
21080 | } | |
757a13d0 JK |
21081 | |
21082 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
21083 | GDB is still reading the definitions from command line. First | |
21084 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
21085 | to create CURRENT_FILE for the main source holding also the command line | |
21086 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
21087 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
21088 | ||
21089 | at_commandline = 1; | |
21090 | ||
21091 | do | |
21092 | { | |
21093 | /* Do we at least have room for a macinfo type byte? */ | |
21094 | if (mac_ptr >= mac_end) | |
21095 | { | |
f664829e | 21096 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
21097 | break; |
21098 | } | |
21099 | ||
21100 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
21101 | mac_ptr++; | |
21102 | ||
cf2c3c16 TT |
21103 | /* Note that we rely on the fact that the corresponding GNU and |
21104 | DWARF constants are the same. */ | |
757a13d0 JK |
21105 | switch (macinfo_type) |
21106 | { | |
21107 | /* A zero macinfo type indicates the end of the macro | |
21108 | information. */ | |
21109 | case 0: | |
21110 | break; | |
2e276125 | 21111 | |
cf2c3c16 TT |
21112 | case DW_MACRO_GNU_define: |
21113 | case DW_MACRO_GNU_undef: | |
21114 | case DW_MACRO_GNU_define_indirect: | |
21115 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
21116 | case DW_MACRO_GNU_define_indirect_alt: |
21117 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 21118 | { |
891d2f0b | 21119 | unsigned int bytes_read; |
2e276125 | 21120 | int line; |
d521ce57 | 21121 | const char *body; |
cf2c3c16 | 21122 | int is_define; |
2e276125 | 21123 | |
cf2c3c16 TT |
21124 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
21125 | mac_ptr += bytes_read; | |
21126 | ||
21127 | if (macinfo_type == DW_MACRO_GNU_define | |
21128 | || macinfo_type == DW_MACRO_GNU_undef) | |
21129 | { | |
21130 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
21131 | mac_ptr += bytes_read; | |
21132 | } | |
21133 | else | |
21134 | { | |
21135 | LONGEST str_offset; | |
21136 | ||
21137 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21138 | mac_ptr += offset_size; | |
2e276125 | 21139 | |
36586728 | 21140 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
21141 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
21142 | || section_is_dwz) | |
36586728 TT |
21143 | { |
21144 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21145 | ||
21146 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
21147 | } | |
21148 | else | |
21149 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
21150 | } |
21151 | ||
21152 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
21153 | || macinfo_type == DW_MACRO_GNU_define_indirect |
21154 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 21155 | if (! current_file) |
757a13d0 JK |
21156 | { |
21157 | /* DWARF violation as no main source is present. */ | |
21158 | complaint (&symfile_complaints, | |
21159 | _("debug info with no main source gives macro %s " | |
21160 | "on line %d: %s"), | |
cf2c3c16 TT |
21161 | is_define ? _("definition") : _("undefinition"), |
21162 | line, body); | |
757a13d0 JK |
21163 | break; |
21164 | } | |
3e43a32a MS |
21165 | if ((line == 0 && !at_commandline) |
21166 | || (line != 0 && at_commandline)) | |
4d3c2250 | 21167 | complaint (&symfile_complaints, |
757a13d0 JK |
21168 | _("debug info gives %s macro %s with %s line %d: %s"), |
21169 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 21170 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
21171 | line == 0 ? _("zero") : _("non-zero"), line, body); |
21172 | ||
cf2c3c16 | 21173 | if (is_define) |
757a13d0 | 21174 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
21175 | else |
21176 | { | |
21177 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
21178 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
21179 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
21180 | macro_undef (current_file, line, body); |
21181 | } | |
2e276125 JB |
21182 | } |
21183 | break; | |
21184 | ||
cf2c3c16 | 21185 | case DW_MACRO_GNU_start_file: |
2e276125 | 21186 | { |
891d2f0b | 21187 | unsigned int bytes_read; |
2e276125 JB |
21188 | int line, file; |
21189 | ||
21190 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21191 | mac_ptr += bytes_read; | |
21192 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21193 | mac_ptr += bytes_read; | |
21194 | ||
3e43a32a MS |
21195 | if ((line == 0 && !at_commandline) |
21196 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
21197 | complaint (&symfile_complaints, |
21198 | _("debug info gives source %d included " | |
21199 | "from %s at %s line %d"), | |
21200 | file, at_commandline ? _("command-line") : _("file"), | |
21201 | line == 0 ? _("zero") : _("non-zero"), line); | |
21202 | ||
21203 | if (at_commandline) | |
21204 | { | |
cf2c3c16 TT |
21205 | /* This DW_MACRO_GNU_start_file was executed in the |
21206 | pass one. */ | |
757a13d0 JK |
21207 | at_commandline = 0; |
21208 | } | |
21209 | else | |
43f3e411 | 21210 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
21211 | } |
21212 | break; | |
21213 | ||
cf2c3c16 | 21214 | case DW_MACRO_GNU_end_file: |
2e276125 | 21215 | if (! current_file) |
4d3c2250 | 21216 | complaint (&symfile_complaints, |
3e43a32a MS |
21217 | _("macro debug info has an unmatched " |
21218 | "`close_file' directive")); | |
2e276125 JB |
21219 | else |
21220 | { | |
21221 | current_file = current_file->included_by; | |
21222 | if (! current_file) | |
21223 | { | |
cf2c3c16 | 21224 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
21225 | |
21226 | /* GCC circa March 2002 doesn't produce the zero | |
21227 | type byte marking the end of the compilation | |
21228 | unit. Complain if it's not there, but exit no | |
21229 | matter what. */ | |
21230 | ||
21231 | /* Do we at least have room for a macinfo type byte? */ | |
21232 | if (mac_ptr >= mac_end) | |
21233 | { | |
f664829e | 21234 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
21235 | return; |
21236 | } | |
21237 | ||
21238 | /* We don't increment mac_ptr here, so this is just | |
21239 | a look-ahead. */ | |
21240 | next_type = read_1_byte (abfd, mac_ptr); | |
21241 | if (next_type != 0) | |
4d3c2250 | 21242 | complaint (&symfile_complaints, |
3e43a32a MS |
21243 | _("no terminating 0-type entry for " |
21244 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
21245 | |
21246 | return; | |
21247 | } | |
21248 | } | |
21249 | break; | |
21250 | ||
cf2c3c16 | 21251 | case DW_MACRO_GNU_transparent_include: |
36586728 | 21252 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
21253 | { |
21254 | LONGEST offset; | |
8fc3fc34 | 21255 | void **slot; |
a036ba48 TT |
21256 | bfd *include_bfd = abfd; |
21257 | struct dwarf2_section_info *include_section = section; | |
21258 | struct dwarf2_section_info alt_section; | |
d521ce57 | 21259 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 21260 | int is_dwz = section_is_dwz; |
d521ce57 | 21261 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
21262 | |
21263 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21264 | mac_ptr += offset_size; | |
21265 | ||
a036ba48 TT |
21266 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
21267 | { | |
21268 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21269 | ||
4d663531 | 21270 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 21271 | |
a036ba48 | 21272 | include_section = &dwz->macro; |
a32a8923 | 21273 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
21274 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
21275 | is_dwz = 1; | |
21276 | } | |
21277 | ||
21278 | new_mac_ptr = include_section->buffer + offset; | |
21279 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
21280 | ||
8fc3fc34 TT |
21281 | if (*slot != NULL) |
21282 | { | |
21283 | /* This has actually happened; see | |
21284 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
21285 | complaint (&symfile_complaints, | |
21286 | _("recursive DW_MACRO_GNU_transparent_include in " | |
21287 | ".debug_macro section")); | |
21288 | } | |
21289 | else | |
21290 | { | |
d521ce57 | 21291 | *slot = (void *) new_mac_ptr; |
36586728 | 21292 | |
a036ba48 | 21293 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
43f3e411 | 21294 | include_mac_end, current_file, lh, |
36586728 | 21295 | section, section_is_gnu, is_dwz, |
4d663531 | 21296 | offset_size, include_hash); |
8fc3fc34 | 21297 | |
d521ce57 | 21298 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 21299 | } |
cf2c3c16 TT |
21300 | } |
21301 | break; | |
21302 | ||
2e276125 | 21303 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
21304 | if (!section_is_gnu) |
21305 | { | |
21306 | unsigned int bytes_read; | |
21307 | int constant; | |
2e276125 | 21308 | |
cf2c3c16 TT |
21309 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
21310 | mac_ptr += bytes_read; | |
21311 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21312 | mac_ptr += bytes_read; | |
2e276125 | 21313 | |
cf2c3c16 TT |
21314 | /* We don't recognize any vendor extensions. */ |
21315 | break; | |
21316 | } | |
21317 | /* FALLTHROUGH */ | |
21318 | ||
21319 | default: | |
21320 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 21321 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
21322 | section); |
21323 | if (mac_ptr == NULL) | |
21324 | return; | |
21325 | break; | |
2e276125 | 21326 | } |
757a13d0 | 21327 | } while (macinfo_type != 0); |
2e276125 | 21328 | } |
8e19ed76 | 21329 | |
cf2c3c16 | 21330 | static void |
09262596 | 21331 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 21332 | int section_is_gnu) |
cf2c3c16 | 21333 | { |
bb5ed363 | 21334 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
21335 | struct line_header *lh = cu->line_header; |
21336 | bfd *abfd; | |
d521ce57 | 21337 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
21338 | struct macro_source_file *current_file = 0; |
21339 | enum dwarf_macro_record_type macinfo_type; | |
21340 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 21341 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 TT |
21342 | struct cleanup *cleanup; |
21343 | htab_t include_hash; | |
21344 | void **slot; | |
09262596 DE |
21345 | struct dwarf2_section_info *section; |
21346 | const char *section_name; | |
21347 | ||
21348 | if (cu->dwo_unit != NULL) | |
21349 | { | |
21350 | if (section_is_gnu) | |
21351 | { | |
21352 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
21353 | section_name = ".debug_macro.dwo"; | |
21354 | } | |
21355 | else | |
21356 | { | |
21357 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
21358 | section_name = ".debug_macinfo.dwo"; | |
21359 | } | |
21360 | } | |
21361 | else | |
21362 | { | |
21363 | if (section_is_gnu) | |
21364 | { | |
21365 | section = &dwarf2_per_objfile->macro; | |
21366 | section_name = ".debug_macro"; | |
21367 | } | |
21368 | else | |
21369 | { | |
21370 | section = &dwarf2_per_objfile->macinfo; | |
21371 | section_name = ".debug_macinfo"; | |
21372 | } | |
21373 | } | |
cf2c3c16 | 21374 | |
bb5ed363 | 21375 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
21376 | if (section->buffer == NULL) |
21377 | { | |
fceca515 | 21378 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
21379 | return; |
21380 | } | |
a32a8923 | 21381 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
21382 | |
21383 | /* First pass: Find the name of the base filename. | |
21384 | This filename is needed in order to process all macros whose definition | |
21385 | (or undefinition) comes from the command line. These macros are defined | |
21386 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
21387 | associated to the base file. | |
21388 | ||
21389 | To determine the base file name, we scan the macro definitions until we | |
21390 | reach the first DW_MACINFO_start_file entry. We then initialize | |
21391 | CURRENT_FILE accordingly so that any macro definition found before the | |
21392 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
21393 | ||
21394 | mac_ptr = section->buffer + offset; | |
21395 | mac_end = section->buffer + section->size; | |
21396 | ||
21397 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
21398 | &offset_size, section_is_gnu); | |
21399 | if (mac_ptr == NULL) | |
21400 | { | |
21401 | /* We already issued a complaint. */ | |
21402 | return; | |
21403 | } | |
21404 | ||
21405 | do | |
21406 | { | |
21407 | /* Do we at least have room for a macinfo type byte? */ | |
21408 | if (mac_ptr >= mac_end) | |
21409 | { | |
21410 | /* Complaint is printed during the second pass as GDB will probably | |
21411 | stop the first pass earlier upon finding | |
21412 | DW_MACINFO_start_file. */ | |
21413 | break; | |
21414 | } | |
21415 | ||
21416 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
21417 | mac_ptr++; | |
21418 | ||
21419 | /* Note that we rely on the fact that the corresponding GNU and | |
21420 | DWARF constants are the same. */ | |
21421 | switch (macinfo_type) | |
21422 | { | |
21423 | /* A zero macinfo type indicates the end of the macro | |
21424 | information. */ | |
21425 | case 0: | |
21426 | break; | |
21427 | ||
21428 | case DW_MACRO_GNU_define: | |
21429 | case DW_MACRO_GNU_undef: | |
21430 | /* Only skip the data by MAC_PTR. */ | |
21431 | { | |
21432 | unsigned int bytes_read; | |
21433 | ||
21434 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21435 | mac_ptr += bytes_read; | |
21436 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21437 | mac_ptr += bytes_read; | |
21438 | } | |
21439 | break; | |
21440 | ||
21441 | case DW_MACRO_GNU_start_file: | |
21442 | { | |
21443 | unsigned int bytes_read; | |
21444 | int line, file; | |
21445 | ||
21446 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21447 | mac_ptr += bytes_read; | |
21448 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21449 | mac_ptr += bytes_read; | |
21450 | ||
43f3e411 | 21451 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
21452 | } |
21453 | break; | |
21454 | ||
21455 | case DW_MACRO_GNU_end_file: | |
21456 | /* No data to skip by MAC_PTR. */ | |
21457 | break; | |
21458 | ||
21459 | case DW_MACRO_GNU_define_indirect: | |
21460 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
21461 | case DW_MACRO_GNU_define_indirect_alt: |
21462 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
21463 | { |
21464 | unsigned int bytes_read; | |
21465 | ||
21466 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21467 | mac_ptr += bytes_read; | |
21468 | mac_ptr += offset_size; | |
21469 | } | |
21470 | break; | |
21471 | ||
21472 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 21473 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
21474 | /* Note that, according to the spec, a transparent include |
21475 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
21476 | skip this opcode. */ | |
21477 | mac_ptr += offset_size; | |
21478 | break; | |
21479 | ||
21480 | case DW_MACINFO_vendor_ext: | |
21481 | /* Only skip the data by MAC_PTR. */ | |
21482 | if (!section_is_gnu) | |
21483 | { | |
21484 | unsigned int bytes_read; | |
21485 | ||
21486 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21487 | mac_ptr += bytes_read; | |
21488 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21489 | mac_ptr += bytes_read; | |
21490 | } | |
21491 | /* FALLTHROUGH */ | |
21492 | ||
21493 | default: | |
21494 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 21495 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
21496 | section); |
21497 | if (mac_ptr == NULL) | |
21498 | return; | |
21499 | break; | |
21500 | } | |
21501 | } while (macinfo_type != 0 && current_file == NULL); | |
21502 | ||
21503 | /* Second pass: Process all entries. | |
21504 | ||
21505 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
21506 | command-line macro definitions/undefinitions. This flag is unset when we | |
21507 | reach the first DW_MACINFO_start_file entry. */ | |
21508 | ||
8fc3fc34 TT |
21509 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
21510 | NULL, xcalloc, xfree); | |
21511 | cleanup = make_cleanup_htab_delete (include_hash); | |
21512 | mac_ptr = section->buffer + offset; | |
21513 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
d521ce57 | 21514 | *slot = (void *) mac_ptr; |
8fc3fc34 | 21515 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
43f3e411 | 21516 | current_file, lh, section, |
4d663531 | 21517 | section_is_gnu, 0, offset_size, include_hash); |
8fc3fc34 | 21518 | do_cleanups (cleanup); |
cf2c3c16 TT |
21519 | } |
21520 | ||
8e19ed76 | 21521 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 21522 | if so return true else false. */ |
380bca97 | 21523 | |
8e19ed76 | 21524 | static int |
6e5a29e1 | 21525 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
21526 | { |
21527 | return (attr == NULL ? 0 : | |
21528 | attr->form == DW_FORM_block1 | |
21529 | || attr->form == DW_FORM_block2 | |
21530 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
21531 | || attr->form == DW_FORM_block |
21532 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 21533 | } |
4c2df51b | 21534 | |
c6a0999f JB |
21535 | /* Return non-zero if ATTR's value is a section offset --- classes |
21536 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
21537 | You may use DW_UNSND (attr) to retrieve such offsets. | |
21538 | ||
21539 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
21540 | may have a value that belongs to more than one of these classes; it | |
21541 | would be ambiguous if we did, because we use the same forms for all | |
21542 | of them. */ | |
380bca97 | 21543 | |
3690dd37 | 21544 | static int |
6e5a29e1 | 21545 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
21546 | { |
21547 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
21548 | || attr->form == DW_FORM_data8 |
21549 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
21550 | } |
21551 | ||
3690dd37 JB |
21552 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
21553 | zero otherwise. When this function returns true, you can apply | |
21554 | dwarf2_get_attr_constant_value to it. | |
21555 | ||
21556 | However, note that for some attributes you must check | |
21557 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
21558 | and DW_FORM_data8 are members of both the constant class, and of | |
21559 | the classes that contain offsets into other debug sections | |
21560 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
21561 | that, if an attribute's can be either a constant or one of the | |
21562 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
21563 | taken as section offsets, not constants. */ | |
380bca97 | 21564 | |
3690dd37 | 21565 | static int |
6e5a29e1 | 21566 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
21567 | { |
21568 | switch (attr->form) | |
21569 | { | |
21570 | case DW_FORM_sdata: | |
21571 | case DW_FORM_udata: | |
21572 | case DW_FORM_data1: | |
21573 | case DW_FORM_data2: | |
21574 | case DW_FORM_data4: | |
21575 | case DW_FORM_data8: | |
21576 | return 1; | |
21577 | default: | |
21578 | return 0; | |
21579 | } | |
21580 | } | |
21581 | ||
7771576e SA |
21582 | |
21583 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
21584 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
21585 | ||
21586 | static int | |
6e5a29e1 | 21587 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
21588 | { |
21589 | switch (attr->form) | |
21590 | { | |
21591 | case DW_FORM_ref_addr: | |
21592 | case DW_FORM_ref1: | |
21593 | case DW_FORM_ref2: | |
21594 | case DW_FORM_ref4: | |
21595 | case DW_FORM_ref8: | |
21596 | case DW_FORM_ref_udata: | |
21597 | case DW_FORM_GNU_ref_alt: | |
21598 | return 1; | |
21599 | default: | |
21600 | return 0; | |
21601 | } | |
21602 | } | |
21603 | ||
3019eac3 DE |
21604 | /* Return the .debug_loc section to use for CU. |
21605 | For DWO files use .debug_loc.dwo. */ | |
21606 | ||
21607 | static struct dwarf2_section_info * | |
21608 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
21609 | { | |
21610 | if (cu->dwo_unit) | |
21611 | return &cu->dwo_unit->dwo_file->sections.loc; | |
21612 | return &dwarf2_per_objfile->loc; | |
21613 | } | |
21614 | ||
8cf6f0b1 TT |
21615 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
21616 | ||
21617 | static void | |
21618 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
21619 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 21620 | const struct attribute *attr) |
8cf6f0b1 | 21621 | { |
3019eac3 DE |
21622 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
21623 | ||
21624 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
21625 | |
21626 | baton->per_cu = cu->per_cu; | |
21627 | gdb_assert (baton->per_cu); | |
21628 | /* We don't know how long the location list is, but make sure we | |
21629 | don't run off the edge of the section. */ | |
3019eac3 DE |
21630 | baton->size = section->size - DW_UNSND (attr); |
21631 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 21632 | baton->base_address = cu->base_address; |
f664829e | 21633 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
21634 | } |
21635 | ||
4c2df51b | 21636 | static void |
ff39bb5e | 21637 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 21638 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 21639 | { |
bb5ed363 | 21640 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 21641 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 21642 | |
3690dd37 | 21643 | if (attr_form_is_section_offset (attr) |
3019eac3 | 21644 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
21645 | the section. If so, fall through to the complaint in the |
21646 | other branch. */ | |
3019eac3 | 21647 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 21648 | { |
0d53c4c4 | 21649 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 21650 | |
bb5ed363 | 21651 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 21652 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 21653 | |
8cf6f0b1 | 21654 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 21655 | |
d00adf39 | 21656 | if (cu->base_known == 0) |
0d53c4c4 | 21657 | complaint (&symfile_complaints, |
3e43a32a MS |
21658 | _("Location list used without " |
21659 | "specifying the CU base address.")); | |
4c2df51b | 21660 | |
f1e6e072 TT |
21661 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
21662 | ? dwarf2_loclist_block_index | |
21663 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
21664 | SYMBOL_LOCATION_BATON (sym) = baton; |
21665 | } | |
21666 | else | |
21667 | { | |
21668 | struct dwarf2_locexpr_baton *baton; | |
21669 | ||
bb5ed363 | 21670 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 21671 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
21672 | baton->per_cu = cu->per_cu; |
21673 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
21674 | |
21675 | if (attr_form_is_block (attr)) | |
21676 | { | |
21677 | /* Note that we're just copying the block's data pointer | |
21678 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
21679 | info_buffer for SYM's objfile; right now we never release |
21680 | that buffer, but when we do clean up properly this may | |
21681 | need to change. */ | |
0d53c4c4 DJ |
21682 | baton->size = DW_BLOCK (attr)->size; |
21683 | baton->data = DW_BLOCK (attr)->data; | |
21684 | } | |
21685 | else | |
21686 | { | |
21687 | dwarf2_invalid_attrib_class_complaint ("location description", | |
21688 | SYMBOL_NATURAL_NAME (sym)); | |
21689 | baton->size = 0; | |
0d53c4c4 | 21690 | } |
6e70227d | 21691 | |
f1e6e072 TT |
21692 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
21693 | ? dwarf2_locexpr_block_index | |
21694 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
21695 | SYMBOL_LOCATION_BATON (sym) = baton; |
21696 | } | |
4c2df51b | 21697 | } |
6502dd73 | 21698 | |
9aa1f1e3 TT |
21699 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
21700 | came from a separate debuginfo file, then the master objfile is | |
21701 | returned. */ | |
ae0d2f24 UW |
21702 | |
21703 | struct objfile * | |
21704 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
21705 | { | |
9291a0cd | 21706 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
21707 | |
21708 | /* Return the master objfile, so that we can report and look up the | |
21709 | correct file containing this variable. */ | |
21710 | if (objfile->separate_debug_objfile_backlink) | |
21711 | objfile = objfile->separate_debug_objfile_backlink; | |
21712 | ||
21713 | return objfile; | |
21714 | } | |
21715 | ||
96408a79 SA |
21716 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
21717 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
21718 | CU_HEADERP first. */ | |
21719 | ||
21720 | static const struct comp_unit_head * | |
21721 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
21722 | struct dwarf2_per_cu_data *per_cu) | |
21723 | { | |
d521ce57 | 21724 | const gdb_byte *info_ptr; |
96408a79 SA |
21725 | |
21726 | if (per_cu->cu) | |
21727 | return &per_cu->cu->header; | |
21728 | ||
8a0459fd | 21729 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
21730 | |
21731 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 21732 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
21733 | |
21734 | return cu_headerp; | |
21735 | } | |
21736 | ||
ae0d2f24 UW |
21737 | /* Return the address size given in the compilation unit header for CU. */ |
21738 | ||
98714339 | 21739 | int |
ae0d2f24 UW |
21740 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
21741 | { | |
96408a79 SA |
21742 | struct comp_unit_head cu_header_local; |
21743 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 21744 | |
96408a79 SA |
21745 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
21746 | ||
21747 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
21748 | } |
21749 | ||
9eae7c52 TT |
21750 | /* Return the offset size given in the compilation unit header for CU. */ |
21751 | ||
21752 | int | |
21753 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
21754 | { | |
96408a79 SA |
21755 | struct comp_unit_head cu_header_local; |
21756 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 21757 | |
96408a79 SA |
21758 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
21759 | ||
21760 | return cu_headerp->offset_size; | |
21761 | } | |
21762 | ||
21763 | /* See its dwarf2loc.h declaration. */ | |
21764 | ||
21765 | int | |
21766 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
21767 | { | |
21768 | struct comp_unit_head cu_header_local; | |
21769 | const struct comp_unit_head *cu_headerp; | |
21770 | ||
21771 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
21772 | ||
21773 | if (cu_headerp->version == 2) | |
21774 | return cu_headerp->addr_size; | |
21775 | else | |
21776 | return cu_headerp->offset_size; | |
181cebd4 JK |
21777 | } |
21778 | ||
9aa1f1e3 TT |
21779 | /* Return the text offset of the CU. The returned offset comes from |
21780 | this CU's objfile. If this objfile came from a separate debuginfo | |
21781 | file, then the offset may be different from the corresponding | |
21782 | offset in the parent objfile. */ | |
21783 | ||
21784 | CORE_ADDR | |
21785 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
21786 | { | |
bb3fa9d0 | 21787 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
21788 | |
21789 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
21790 | } | |
21791 | ||
348e048f DE |
21792 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
21793 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
21794 | |
21795 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 21796 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 21797 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
21798 | struct objfile *objfile) |
21799 | { | |
21800 | struct dwarf2_per_cu_data *this_cu; | |
21801 | int low, high; | |
36586728 | 21802 | const sect_offset *cu_off; |
ae038cb0 | 21803 | |
ae038cb0 DJ |
21804 | low = 0; |
21805 | high = dwarf2_per_objfile->n_comp_units - 1; | |
21806 | while (high > low) | |
21807 | { | |
36586728 | 21808 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 21809 | int mid = low + (high - low) / 2; |
9a619af0 | 21810 | |
36586728 TT |
21811 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
21812 | cu_off = &mid_cu->offset; | |
21813 | if (mid_cu->is_dwz > offset_in_dwz | |
21814 | || (mid_cu->is_dwz == offset_in_dwz | |
21815 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
21816 | high = mid; |
21817 | else | |
21818 | low = mid + 1; | |
21819 | } | |
21820 | gdb_assert (low == high); | |
36586728 TT |
21821 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
21822 | cu_off = &this_cu->offset; | |
21823 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 21824 | { |
36586728 | 21825 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
21826 | error (_("Dwarf Error: could not find partial DIE containing " |
21827 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 21828 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 21829 | |
b64f50a1 JK |
21830 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
21831 | <= offset.sect_off); | |
ae038cb0 DJ |
21832 | return dwarf2_per_objfile->all_comp_units[low-1]; |
21833 | } | |
21834 | else | |
21835 | { | |
21836 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
21837 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
21838 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
21839 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
21840 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
21841 | return this_cu; |
21842 | } | |
21843 | } | |
21844 | ||
23745b47 | 21845 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 21846 | |
9816fde3 | 21847 | static void |
23745b47 | 21848 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 21849 | { |
9816fde3 | 21850 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
21851 | per_cu->cu = cu; |
21852 | cu->per_cu = per_cu; | |
21853 | cu->objfile = per_cu->objfile; | |
93311388 | 21854 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
21855 | } |
21856 | ||
21857 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
21858 | ||
21859 | static void | |
95554aad TT |
21860 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
21861 | enum language pretend_language) | |
9816fde3 JK |
21862 | { |
21863 | struct attribute *attr; | |
21864 | ||
21865 | /* Set the language we're debugging. */ | |
21866 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
21867 | if (attr) | |
21868 | set_cu_language (DW_UNSND (attr), cu); | |
21869 | else | |
9cded63f | 21870 | { |
95554aad | 21871 | cu->language = pretend_language; |
9cded63f TT |
21872 | cu->language_defn = language_def (cu->language); |
21873 | } | |
dee91e82 DE |
21874 | |
21875 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
21876 | if (attr) | |
21877 | cu->producer = DW_STRING (attr); | |
93311388 DE |
21878 | } |
21879 | ||
ae038cb0 DJ |
21880 | /* Release one cached compilation unit, CU. We unlink it from the tree |
21881 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
21882 | the caller is responsible for that. |
21883 | NOTE: DATA is a void * because this function is also used as a | |
21884 | cleanup routine. */ | |
ae038cb0 DJ |
21885 | |
21886 | static void | |
68dc6402 | 21887 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
21888 | { |
21889 | struct dwarf2_cu *cu = data; | |
21890 | ||
23745b47 DE |
21891 | gdb_assert (cu->per_cu != NULL); |
21892 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
21893 | cu->per_cu = NULL; |
21894 | ||
21895 | obstack_free (&cu->comp_unit_obstack, NULL); | |
21896 | ||
21897 | xfree (cu); | |
21898 | } | |
21899 | ||
72bf9492 | 21900 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 21901 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 21902 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
21903 | |
21904 | static void | |
21905 | free_stack_comp_unit (void *data) | |
21906 | { | |
21907 | struct dwarf2_cu *cu = data; | |
21908 | ||
23745b47 DE |
21909 | gdb_assert (cu->per_cu != NULL); |
21910 | cu->per_cu->cu = NULL; | |
21911 | cu->per_cu = NULL; | |
21912 | ||
72bf9492 DJ |
21913 | obstack_free (&cu->comp_unit_obstack, NULL); |
21914 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
21915 | } |
21916 | ||
21917 | /* Free all cached compilation units. */ | |
21918 | ||
21919 | static void | |
21920 | free_cached_comp_units (void *data) | |
21921 | { | |
21922 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21923 | ||
21924 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21925 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21926 | while (per_cu != NULL) | |
21927 | { | |
21928 | struct dwarf2_per_cu_data *next_cu; | |
21929 | ||
21930 | next_cu = per_cu->cu->read_in_chain; | |
21931 | ||
68dc6402 | 21932 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21933 | *last_chain = next_cu; |
21934 | ||
21935 | per_cu = next_cu; | |
21936 | } | |
21937 | } | |
21938 | ||
21939 | /* Increase the age counter on each cached compilation unit, and free | |
21940 | any that are too old. */ | |
21941 | ||
21942 | static void | |
21943 | age_cached_comp_units (void) | |
21944 | { | |
21945 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21946 | ||
21947 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
21948 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21949 | while (per_cu != NULL) | |
21950 | { | |
21951 | per_cu->cu->last_used ++; | |
21952 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
21953 | dwarf2_mark (per_cu->cu); | |
21954 | per_cu = per_cu->cu->read_in_chain; | |
21955 | } | |
21956 | ||
21957 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21958 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21959 | while (per_cu != NULL) | |
21960 | { | |
21961 | struct dwarf2_per_cu_data *next_cu; | |
21962 | ||
21963 | next_cu = per_cu->cu->read_in_chain; | |
21964 | ||
21965 | if (!per_cu->cu->mark) | |
21966 | { | |
68dc6402 | 21967 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21968 | *last_chain = next_cu; |
21969 | } | |
21970 | else | |
21971 | last_chain = &per_cu->cu->read_in_chain; | |
21972 | ||
21973 | per_cu = next_cu; | |
21974 | } | |
21975 | } | |
21976 | ||
21977 | /* Remove a single compilation unit from the cache. */ | |
21978 | ||
21979 | static void | |
dee91e82 | 21980 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
21981 | { |
21982 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21983 | ||
21984 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21985 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21986 | while (per_cu != NULL) | |
21987 | { | |
21988 | struct dwarf2_per_cu_data *next_cu; | |
21989 | ||
21990 | next_cu = per_cu->cu->read_in_chain; | |
21991 | ||
dee91e82 | 21992 | if (per_cu == target_per_cu) |
ae038cb0 | 21993 | { |
68dc6402 | 21994 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 21995 | per_cu->cu = NULL; |
ae038cb0 DJ |
21996 | *last_chain = next_cu; |
21997 | break; | |
21998 | } | |
21999 | else | |
22000 | last_chain = &per_cu->cu->read_in_chain; | |
22001 | ||
22002 | per_cu = next_cu; | |
22003 | } | |
22004 | } | |
22005 | ||
fe3e1990 DJ |
22006 | /* Release all extra memory associated with OBJFILE. */ |
22007 | ||
22008 | void | |
22009 | dwarf2_free_objfile (struct objfile *objfile) | |
22010 | { | |
22011 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
22012 | ||
22013 | if (dwarf2_per_objfile == NULL) | |
22014 | return; | |
22015 | ||
22016 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
22017 | free_cached_comp_units (NULL); | |
22018 | ||
7b9f3c50 DE |
22019 | if (dwarf2_per_objfile->quick_file_names_table) |
22020 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 22021 | |
527f3840 JK |
22022 | if (dwarf2_per_objfile->line_header_hash) |
22023 | htab_delete (dwarf2_per_objfile->line_header_hash); | |
22024 | ||
fe3e1990 DJ |
22025 | /* Everything else should be on the objfile obstack. */ |
22026 | } | |
22027 | ||
dee91e82 DE |
22028 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
22029 | We store these in a hash table separate from the DIEs, and preserve them | |
22030 | when the DIEs are flushed out of cache. | |
22031 | ||
22032 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 22033 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
22034 | or the type may come from a DWO file. Furthermore, while it's more logical |
22035 | to use per_cu->section+offset, with Fission the section with the data is in | |
22036 | the DWO file but we don't know that section at the point we need it. | |
22037 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
22038 | because we can enter the lookup routine, get_die_type_at_offset, from | |
22039 | outside this file, and thus won't necessarily have PER_CU->cu. | |
22040 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 22041 | |
dee91e82 | 22042 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 22043 | { |
dee91e82 | 22044 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 22045 | sect_offset offset; |
1c379e20 DJ |
22046 | struct type *type; |
22047 | }; | |
22048 | ||
dee91e82 | 22049 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22050 | |
22051 | static hashval_t | |
dee91e82 | 22052 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 22053 | { |
dee91e82 | 22054 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 22055 | |
dee91e82 | 22056 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
22057 | } |
22058 | ||
dee91e82 | 22059 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22060 | |
22061 | static int | |
dee91e82 | 22062 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 22063 | { |
dee91e82 DE |
22064 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
22065 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 22066 | |
dee91e82 DE |
22067 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
22068 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
22069 | } |
22070 | ||
22071 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
22072 | table if necessary. For convenience, return TYPE. |
22073 | ||
22074 | The DIEs reading must have careful ordering to: | |
22075 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
22076 | reading current DIE. | |
22077 | * Not trying to dereference contents of still incompletely read in types | |
22078 | while reading in other DIEs. | |
22079 | * Enable referencing still incompletely read in types just by a pointer to | |
22080 | the type without accessing its fields. | |
22081 | ||
22082 | Therefore caller should follow these rules: | |
22083 | * Try to fetch any prerequisite types we may need to build this DIE type | |
22084 | before building the type and calling set_die_type. | |
e71ec853 | 22085 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
22086 | possible before fetching more types to complete the current type. |
22087 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 22088 | |
f792889a | 22089 | static struct type * |
1c379e20 DJ |
22090 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
22091 | { | |
dee91e82 | 22092 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 22093 | struct objfile *objfile = cu->objfile; |
3cdcd0ce JB |
22094 | struct attribute *attr; |
22095 | struct dynamic_prop prop; | |
1c379e20 | 22096 | |
b4ba55a1 JB |
22097 | /* For Ada types, make sure that the gnat-specific data is always |
22098 | initialized (if not already set). There are a few types where | |
22099 | we should not be doing so, because the type-specific area is | |
22100 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
22101 | where the type-specific area is used to store the floatformat). | |
22102 | But this is not a problem, because the gnat-specific information | |
22103 | is actually not needed for these types. */ | |
22104 | if (need_gnat_info (cu) | |
22105 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
22106 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
22107 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
22108 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
22109 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
22110 | && !HAVE_GNAT_AUX_INFO (type)) |
22111 | INIT_GNAT_SPECIFIC (type); | |
22112 | ||
3cdcd0ce JB |
22113 | /* Read DW_AT_data_location and set in type. */ |
22114 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
22115 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
93a8e227 | 22116 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type, objfile); |
3cdcd0ce | 22117 | |
dee91e82 | 22118 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22119 | { |
dee91e82 DE |
22120 | dwarf2_per_objfile->die_type_hash = |
22121 | htab_create_alloc_ex (127, | |
22122 | per_cu_offset_and_type_hash, | |
22123 | per_cu_offset_and_type_eq, | |
22124 | NULL, | |
22125 | &objfile->objfile_obstack, | |
22126 | hashtab_obstack_allocate, | |
22127 | dummy_obstack_deallocate); | |
f792889a | 22128 | } |
1c379e20 | 22129 | |
dee91e82 | 22130 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
22131 | ofs.offset = die->offset; |
22132 | ofs.type = type; | |
dee91e82 DE |
22133 | slot = (struct dwarf2_per_cu_offset_and_type **) |
22134 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
22135 | if (*slot) |
22136 | complaint (&symfile_complaints, | |
22137 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 22138 | die->offset.sect_off); |
673bfd45 | 22139 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 22140 | **slot = ofs; |
f792889a | 22141 | return type; |
1c379e20 DJ |
22142 | } |
22143 | ||
02142a6c DE |
22144 | /* Look up the type for the die at OFFSET in PER_CU in die_type_hash, |
22145 | or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
22146 | |
22147 | static struct type * | |
b64f50a1 | 22148 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 22149 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 22150 | { |
dee91e82 | 22151 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 22152 | |
dee91e82 | 22153 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22154 | return NULL; |
1c379e20 | 22155 | |
dee91e82 | 22156 | ofs.per_cu = per_cu; |
673bfd45 | 22157 | ofs.offset = offset; |
dee91e82 | 22158 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
22159 | if (slot) |
22160 | return slot->type; | |
22161 | else | |
22162 | return NULL; | |
22163 | } | |
22164 | ||
02142a6c | 22165 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
22166 | or return NULL if DIE does not have a saved type. */ |
22167 | ||
22168 | static struct type * | |
22169 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
22170 | { | |
22171 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
22172 | } | |
22173 | ||
10b3939b DJ |
22174 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
22175 | ||
22176 | static void | |
22177 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
22178 | struct dwarf2_per_cu_data *ref_per_cu) | |
22179 | { | |
22180 | void **slot; | |
22181 | ||
22182 | if (cu->dependencies == NULL) | |
22183 | cu->dependencies | |
22184 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
22185 | NULL, &cu->comp_unit_obstack, | |
22186 | hashtab_obstack_allocate, | |
22187 | dummy_obstack_deallocate); | |
22188 | ||
22189 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
22190 | if (*slot == NULL) | |
22191 | *slot = ref_per_cu; | |
22192 | } | |
1c379e20 | 22193 | |
f504f079 DE |
22194 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
22195 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
22196 | cache that we must keep because we are keeping CU. */ |
22197 | ||
10b3939b DJ |
22198 | static int |
22199 | dwarf2_mark_helper (void **slot, void *data) | |
22200 | { | |
22201 | struct dwarf2_per_cu_data *per_cu; | |
22202 | ||
22203 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
22204 | |
22205 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
22206 | reading of the chain. As such dependencies remain valid it is not much | |
22207 | useful to track and undo them during QUIT cleanups. */ | |
22208 | if (per_cu->cu == NULL) | |
22209 | return 1; | |
22210 | ||
10b3939b DJ |
22211 | if (per_cu->cu->mark) |
22212 | return 1; | |
22213 | per_cu->cu->mark = 1; | |
22214 | ||
22215 | if (per_cu->cu->dependencies != NULL) | |
22216 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
22217 | ||
22218 | return 1; | |
22219 | } | |
22220 | ||
f504f079 DE |
22221 | /* Set the mark field in CU and in every other compilation unit in the |
22222 | cache that we must keep because we are keeping CU. */ | |
22223 | ||
ae038cb0 DJ |
22224 | static void |
22225 | dwarf2_mark (struct dwarf2_cu *cu) | |
22226 | { | |
22227 | if (cu->mark) | |
22228 | return; | |
22229 | cu->mark = 1; | |
10b3939b DJ |
22230 | if (cu->dependencies != NULL) |
22231 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
22232 | } |
22233 | ||
22234 | static void | |
22235 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
22236 | { | |
22237 | while (per_cu) | |
22238 | { | |
22239 | per_cu->cu->mark = 0; | |
22240 | per_cu = per_cu->cu->read_in_chain; | |
22241 | } | |
72bf9492 DJ |
22242 | } |
22243 | ||
72bf9492 DJ |
22244 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
22245 | is its offset in .debug_info for this objfile. */ | |
22246 | ||
22247 | static hashval_t | |
22248 | partial_die_hash (const void *item) | |
22249 | { | |
22250 | const struct partial_die_info *part_die = item; | |
9a619af0 | 22251 | |
b64f50a1 | 22252 | return part_die->offset.sect_off; |
72bf9492 DJ |
22253 | } |
22254 | ||
22255 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
22256 | are equal if they have the same offset. */ | |
22257 | ||
22258 | static int | |
22259 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
22260 | { | |
22261 | const struct partial_die_info *part_die_lhs = item_lhs; | |
22262 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 22263 | |
b64f50a1 | 22264 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
22265 | } |
22266 | ||
ae038cb0 DJ |
22267 | static struct cmd_list_element *set_dwarf2_cmdlist; |
22268 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
22269 | ||
22270 | static void | |
22271 | set_dwarf2_cmd (char *args, int from_tty) | |
22272 | { | |
635c7e8a TT |
22273 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", all_commands, |
22274 | gdb_stdout); | |
ae038cb0 DJ |
22275 | } |
22276 | ||
22277 | static void | |
22278 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 22279 | { |
ae038cb0 DJ |
22280 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
22281 | } | |
22282 | ||
4bf44c1c | 22283 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
22284 | |
22285 | static void | |
c1bd65d0 | 22286 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
22287 | { |
22288 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 22289 | int ix; |
8b70b953 | 22290 | |
626f2d1c TT |
22291 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
22292 | cleaning up. */ | |
22293 | dwarf2_per_objfile = NULL; | |
22294 | ||
59b0c7c1 JB |
22295 | for (ix = 0; ix < data->n_comp_units; ++ix) |
22296 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 22297 | |
59b0c7c1 | 22298 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 22299 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
22300 | data->all_type_units[ix]->per_cu.imported_symtabs); |
22301 | xfree (data->all_type_units); | |
95554aad | 22302 | |
8b70b953 | 22303 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
22304 | |
22305 | if (data->dwo_files) | |
22306 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
22307 | if (data->dwp_file) |
22308 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
22309 | |
22310 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
22311 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
22312 | } |
22313 | ||
22314 | \f | |
ae2de4f8 | 22315 | /* The "save gdb-index" command. */ |
9291a0cd TT |
22316 | |
22317 | /* The contents of the hash table we create when building the string | |
22318 | table. */ | |
22319 | struct strtab_entry | |
22320 | { | |
22321 | offset_type offset; | |
22322 | const char *str; | |
22323 | }; | |
22324 | ||
559a7a62 JK |
22325 | /* Hash function for a strtab_entry. |
22326 | ||
22327 | Function is used only during write_hash_table so no index format backward | |
22328 | compatibility is needed. */ | |
b89be57b | 22329 | |
9291a0cd TT |
22330 | static hashval_t |
22331 | hash_strtab_entry (const void *e) | |
22332 | { | |
22333 | const struct strtab_entry *entry = e; | |
559a7a62 | 22334 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
22335 | } |
22336 | ||
22337 | /* Equality function for a strtab_entry. */ | |
b89be57b | 22338 | |
9291a0cd TT |
22339 | static int |
22340 | eq_strtab_entry (const void *a, const void *b) | |
22341 | { | |
22342 | const struct strtab_entry *ea = a; | |
22343 | const struct strtab_entry *eb = b; | |
22344 | return !strcmp (ea->str, eb->str); | |
22345 | } | |
22346 | ||
22347 | /* Create a strtab_entry hash table. */ | |
b89be57b | 22348 | |
9291a0cd TT |
22349 | static htab_t |
22350 | create_strtab (void) | |
22351 | { | |
22352 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
22353 | xfree, xcalloc, xfree); | |
22354 | } | |
22355 | ||
22356 | /* Add a string to the constant pool. Return the string's offset in | |
22357 | host order. */ | |
b89be57b | 22358 | |
9291a0cd TT |
22359 | static offset_type |
22360 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
22361 | { | |
22362 | void **slot; | |
22363 | struct strtab_entry entry; | |
22364 | struct strtab_entry *result; | |
22365 | ||
22366 | entry.str = str; | |
22367 | slot = htab_find_slot (table, &entry, INSERT); | |
22368 | if (*slot) | |
22369 | result = *slot; | |
22370 | else | |
22371 | { | |
22372 | result = XNEW (struct strtab_entry); | |
22373 | result->offset = obstack_object_size (cpool); | |
22374 | result->str = str; | |
22375 | obstack_grow_str0 (cpool, str); | |
22376 | *slot = result; | |
22377 | } | |
22378 | return result->offset; | |
22379 | } | |
22380 | ||
22381 | /* An entry in the symbol table. */ | |
22382 | struct symtab_index_entry | |
22383 | { | |
22384 | /* The name of the symbol. */ | |
22385 | const char *name; | |
22386 | /* The offset of the name in the constant pool. */ | |
22387 | offset_type index_offset; | |
22388 | /* A sorted vector of the indices of all the CUs that hold an object | |
22389 | of this name. */ | |
22390 | VEC (offset_type) *cu_indices; | |
22391 | }; | |
22392 | ||
22393 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
22394 | struct mapped_symtab | |
22395 | { | |
22396 | offset_type n_elements; | |
22397 | offset_type size; | |
22398 | struct symtab_index_entry **data; | |
22399 | }; | |
22400 | ||
22401 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 22402 | |
9291a0cd TT |
22403 | static hashval_t |
22404 | hash_symtab_entry (const void *e) | |
22405 | { | |
22406 | const struct symtab_index_entry *entry = e; | |
22407 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
22408 | sizeof (offset_type) * VEC_length (offset_type, | |
22409 | entry->cu_indices), | |
22410 | 0); | |
22411 | } | |
22412 | ||
22413 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 22414 | |
9291a0cd TT |
22415 | static int |
22416 | eq_symtab_entry (const void *a, const void *b) | |
22417 | { | |
22418 | const struct symtab_index_entry *ea = a; | |
22419 | const struct symtab_index_entry *eb = b; | |
22420 | int len = VEC_length (offset_type, ea->cu_indices); | |
22421 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
22422 | return 0; | |
22423 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
22424 | VEC_address (offset_type, eb->cu_indices), | |
22425 | sizeof (offset_type) * len); | |
22426 | } | |
22427 | ||
22428 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 22429 | |
9291a0cd TT |
22430 | static void |
22431 | delete_symtab_entry (void *p) | |
22432 | { | |
22433 | struct symtab_index_entry *entry = p; | |
22434 | VEC_free (offset_type, entry->cu_indices); | |
22435 | xfree (entry); | |
22436 | } | |
22437 | ||
22438 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 22439 | |
9291a0cd | 22440 | static htab_t |
3876f04e | 22441 | create_symbol_hash_table (void) |
9291a0cd TT |
22442 | { |
22443 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
22444 | delete_symtab_entry, xcalloc, xfree); | |
22445 | } | |
22446 | ||
22447 | /* Create a new mapped symtab object. */ | |
b89be57b | 22448 | |
9291a0cd TT |
22449 | static struct mapped_symtab * |
22450 | create_mapped_symtab (void) | |
22451 | { | |
22452 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
22453 | symtab->n_elements = 0; | |
22454 | symtab->size = 1024; | |
22455 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
22456 | return symtab; | |
22457 | } | |
22458 | ||
22459 | /* Destroy a mapped_symtab. */ | |
b89be57b | 22460 | |
9291a0cd TT |
22461 | static void |
22462 | cleanup_mapped_symtab (void *p) | |
22463 | { | |
22464 | struct mapped_symtab *symtab = p; | |
22465 | /* The contents of the array are freed when the other hash table is | |
22466 | destroyed. */ | |
22467 | xfree (symtab->data); | |
22468 | xfree (symtab); | |
22469 | } | |
22470 | ||
22471 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
22472 | the slot. |
22473 | ||
22474 | Function is used only during write_hash_table so no index format backward | |
22475 | compatibility is needed. */ | |
b89be57b | 22476 | |
9291a0cd TT |
22477 | static struct symtab_index_entry ** |
22478 | find_slot (struct mapped_symtab *symtab, const char *name) | |
22479 | { | |
559a7a62 | 22480 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
22481 | |
22482 | index = hash & (symtab->size - 1); | |
22483 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
22484 | ||
22485 | for (;;) | |
22486 | { | |
22487 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
22488 | return &symtab->data[index]; | |
22489 | index = (index + step) & (symtab->size - 1); | |
22490 | } | |
22491 | } | |
22492 | ||
22493 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 22494 | |
9291a0cd TT |
22495 | static void |
22496 | hash_expand (struct mapped_symtab *symtab) | |
22497 | { | |
22498 | offset_type old_size = symtab->size; | |
22499 | offset_type i; | |
22500 | struct symtab_index_entry **old_entries = symtab->data; | |
22501 | ||
22502 | symtab->size *= 2; | |
22503 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
22504 | ||
22505 | for (i = 0; i < old_size; ++i) | |
22506 | { | |
22507 | if (old_entries[i]) | |
22508 | { | |
22509 | struct symtab_index_entry **slot = find_slot (symtab, | |
22510 | old_entries[i]->name); | |
22511 | *slot = old_entries[i]; | |
22512 | } | |
22513 | } | |
22514 | ||
22515 | xfree (old_entries); | |
22516 | } | |
22517 | ||
156942c7 DE |
22518 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
22519 | CU_INDEX is the index of the CU in which the symbol appears. | |
22520 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 22521 | |
9291a0cd TT |
22522 | static void |
22523 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 22524 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
22525 | offset_type cu_index) |
22526 | { | |
22527 | struct symtab_index_entry **slot; | |
156942c7 | 22528 | offset_type cu_index_and_attrs; |
9291a0cd TT |
22529 | |
22530 | ++symtab->n_elements; | |
22531 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
22532 | hash_expand (symtab); | |
22533 | ||
22534 | slot = find_slot (symtab, name); | |
22535 | if (!*slot) | |
22536 | { | |
22537 | *slot = XNEW (struct symtab_index_entry); | |
22538 | (*slot)->name = name; | |
156942c7 | 22539 | /* index_offset is set later. */ |
9291a0cd TT |
22540 | (*slot)->cu_indices = NULL; |
22541 | } | |
156942c7 DE |
22542 | |
22543 | cu_index_and_attrs = 0; | |
22544 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
22545 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
22546 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
22547 | ||
22548 | /* We don't want to record an index value twice as we want to avoid the | |
22549 | duplication. | |
22550 | We process all global symbols and then all static symbols | |
22551 | (which would allow us to avoid the duplication by only having to check | |
22552 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
22553 | To keep things simple we don't worry about the duplication here and | |
22554 | sort and uniqufy the list after we've processed all symbols. */ | |
22555 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
22556 | } | |
22557 | ||
22558 | /* qsort helper routine for uniquify_cu_indices. */ | |
22559 | ||
22560 | static int | |
22561 | offset_type_compare (const void *ap, const void *bp) | |
22562 | { | |
22563 | offset_type a = *(offset_type *) ap; | |
22564 | offset_type b = *(offset_type *) bp; | |
22565 | ||
22566 | return (a > b) - (b > a); | |
22567 | } | |
22568 | ||
22569 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
22570 | ||
22571 | static void | |
22572 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
22573 | { | |
22574 | int i; | |
22575 | ||
22576 | for (i = 0; i < symtab->size; ++i) | |
22577 | { | |
22578 | struct symtab_index_entry *entry = symtab->data[i]; | |
22579 | ||
22580 | if (entry | |
22581 | && entry->cu_indices != NULL) | |
22582 | { | |
22583 | unsigned int next_to_insert, next_to_check; | |
22584 | offset_type last_value; | |
22585 | ||
22586 | qsort (VEC_address (offset_type, entry->cu_indices), | |
22587 | VEC_length (offset_type, entry->cu_indices), | |
22588 | sizeof (offset_type), offset_type_compare); | |
22589 | ||
22590 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
22591 | next_to_insert = 1; | |
22592 | for (next_to_check = 1; | |
22593 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
22594 | ++next_to_check) | |
22595 | { | |
22596 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
22597 | != last_value) | |
22598 | { | |
22599 | last_value = VEC_index (offset_type, entry->cu_indices, | |
22600 | next_to_check); | |
22601 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
22602 | last_value); | |
22603 | ++next_to_insert; | |
22604 | } | |
22605 | } | |
22606 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
22607 | } | |
22608 | } | |
9291a0cd TT |
22609 | } |
22610 | ||
22611 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 22612 | |
9291a0cd | 22613 | static offset_type |
3876f04e | 22614 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
22615 | struct symtab_index_entry *entry) |
22616 | { | |
22617 | void **slot; | |
22618 | ||
3876f04e | 22619 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
22620 | if (!*slot) |
22621 | { | |
22622 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
22623 | offset_type val = MAYBE_SWAP (len); | |
22624 | offset_type iter; | |
22625 | int i; | |
22626 | ||
22627 | *slot = entry; | |
22628 | entry->index_offset = obstack_object_size (cpool); | |
22629 | ||
22630 | obstack_grow (cpool, &val, sizeof (val)); | |
22631 | for (i = 0; | |
22632 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
22633 | ++i) | |
22634 | { | |
22635 | val = MAYBE_SWAP (iter); | |
22636 | obstack_grow (cpool, &val, sizeof (val)); | |
22637 | } | |
22638 | } | |
22639 | else | |
22640 | { | |
22641 | struct symtab_index_entry *old_entry = *slot; | |
22642 | entry->index_offset = old_entry->index_offset; | |
22643 | entry = old_entry; | |
22644 | } | |
22645 | return entry->index_offset; | |
22646 | } | |
22647 | ||
22648 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
22649 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 22650 | |
9291a0cd TT |
22651 | static void |
22652 | write_hash_table (struct mapped_symtab *symtab, | |
22653 | struct obstack *output, struct obstack *cpool) | |
22654 | { | |
22655 | offset_type i; | |
3876f04e | 22656 | htab_t symbol_hash_table; |
9291a0cd TT |
22657 | htab_t str_table; |
22658 | ||
3876f04e | 22659 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 22660 | str_table = create_strtab (); |
3876f04e | 22661 | |
9291a0cd TT |
22662 | /* We add all the index vectors to the constant pool first, to |
22663 | ensure alignment is ok. */ | |
22664 | for (i = 0; i < symtab->size; ++i) | |
22665 | { | |
22666 | if (symtab->data[i]) | |
3876f04e | 22667 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
22668 | } |
22669 | ||
22670 | /* Now write out the hash table. */ | |
22671 | for (i = 0; i < symtab->size; ++i) | |
22672 | { | |
22673 | offset_type str_off, vec_off; | |
22674 | ||
22675 | if (symtab->data[i]) | |
22676 | { | |
22677 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
22678 | vec_off = symtab->data[i]->index_offset; | |
22679 | } | |
22680 | else | |
22681 | { | |
22682 | /* While 0 is a valid constant pool index, it is not valid | |
22683 | to have 0 for both offsets. */ | |
22684 | str_off = 0; | |
22685 | vec_off = 0; | |
22686 | } | |
22687 | ||
22688 | str_off = MAYBE_SWAP (str_off); | |
22689 | vec_off = MAYBE_SWAP (vec_off); | |
22690 | ||
22691 | obstack_grow (output, &str_off, sizeof (str_off)); | |
22692 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
22693 | } | |
22694 | ||
22695 | htab_delete (str_table); | |
3876f04e | 22696 | htab_delete (symbol_hash_table); |
9291a0cd TT |
22697 | } |
22698 | ||
0a5429f6 DE |
22699 | /* Struct to map psymtab to CU index in the index file. */ |
22700 | struct psymtab_cu_index_map | |
22701 | { | |
22702 | struct partial_symtab *psymtab; | |
22703 | unsigned int cu_index; | |
22704 | }; | |
22705 | ||
22706 | static hashval_t | |
22707 | hash_psymtab_cu_index (const void *item) | |
22708 | { | |
22709 | const struct psymtab_cu_index_map *map = item; | |
22710 | ||
22711 | return htab_hash_pointer (map->psymtab); | |
22712 | } | |
22713 | ||
22714 | static int | |
22715 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
22716 | { | |
22717 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
22718 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
22719 | ||
22720 | return lhs->psymtab == rhs->psymtab; | |
22721 | } | |
22722 | ||
22723 | /* Helper struct for building the address table. */ | |
22724 | struct addrmap_index_data | |
22725 | { | |
22726 | struct objfile *objfile; | |
22727 | struct obstack *addr_obstack; | |
22728 | htab_t cu_index_htab; | |
22729 | ||
22730 | /* Non-zero if the previous_* fields are valid. | |
22731 | We can't write an entry until we see the next entry (since it is only then | |
22732 | that we know the end of the entry). */ | |
22733 | int previous_valid; | |
22734 | /* Index of the CU in the table of all CUs in the index file. */ | |
22735 | unsigned int previous_cu_index; | |
0963b4bd | 22736 | /* Start address of the CU. */ |
0a5429f6 DE |
22737 | CORE_ADDR previous_cu_start; |
22738 | }; | |
22739 | ||
22740 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 22741 | |
9291a0cd | 22742 | static void |
0a5429f6 DE |
22743 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
22744 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 22745 | { |
0a5429f6 | 22746 | offset_type cu_index_to_write; |
948f8e3d | 22747 | gdb_byte addr[8]; |
9291a0cd TT |
22748 | CORE_ADDR baseaddr; |
22749 | ||
22750 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
22751 | ||
0a5429f6 DE |
22752 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
22753 | obstack_grow (obstack, addr, 8); | |
22754 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
22755 | obstack_grow (obstack, addr, 8); | |
22756 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
22757 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
22758 | } | |
22759 | ||
22760 | /* Worker function for traversing an addrmap to build the address table. */ | |
22761 | ||
22762 | static int | |
22763 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
22764 | { | |
22765 | struct addrmap_index_data *data = datap; | |
22766 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
22767 | |
22768 | if (data->previous_valid) | |
22769 | add_address_entry (data->objfile, data->addr_obstack, | |
22770 | data->previous_cu_start, start_addr, | |
22771 | data->previous_cu_index); | |
22772 | ||
22773 | data->previous_cu_start = start_addr; | |
22774 | if (pst != NULL) | |
22775 | { | |
22776 | struct psymtab_cu_index_map find_map, *map; | |
22777 | find_map.psymtab = pst; | |
22778 | map = htab_find (data->cu_index_htab, &find_map); | |
22779 | gdb_assert (map != NULL); | |
22780 | data->previous_cu_index = map->cu_index; | |
22781 | data->previous_valid = 1; | |
22782 | } | |
22783 | else | |
22784 | data->previous_valid = 0; | |
22785 | ||
22786 | return 0; | |
22787 | } | |
22788 | ||
22789 | /* Write OBJFILE's address map to OBSTACK. | |
22790 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
22791 | in the index file. */ | |
22792 | ||
22793 | static void | |
22794 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
22795 | htab_t cu_index_htab) | |
22796 | { | |
22797 | struct addrmap_index_data addrmap_index_data; | |
22798 | ||
22799 | /* When writing the address table, we have to cope with the fact that | |
22800 | the addrmap iterator only provides the start of a region; we have to | |
22801 | wait until the next invocation to get the start of the next region. */ | |
22802 | ||
22803 | addrmap_index_data.objfile = objfile; | |
22804 | addrmap_index_data.addr_obstack = obstack; | |
22805 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
22806 | addrmap_index_data.previous_valid = 0; | |
22807 | ||
22808 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
22809 | &addrmap_index_data); | |
22810 | ||
22811 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
22812 | is valid, but we should still handle it. | |
22813 | The end address is recorded as the start of the next region, but that | |
22814 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
22815 | anyway. */ | |
22816 | if (addrmap_index_data.previous_valid) | |
22817 | add_address_entry (objfile, obstack, | |
22818 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
22819 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
22820 | } |
22821 | ||
156942c7 DE |
22822 | /* Return the symbol kind of PSYM. */ |
22823 | ||
22824 | static gdb_index_symbol_kind | |
22825 | symbol_kind (struct partial_symbol *psym) | |
22826 | { | |
22827 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
22828 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
22829 | ||
22830 | switch (domain) | |
22831 | { | |
22832 | case VAR_DOMAIN: | |
22833 | switch (aclass) | |
22834 | { | |
22835 | case LOC_BLOCK: | |
22836 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
22837 | case LOC_TYPEDEF: | |
22838 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
22839 | case LOC_COMPUTED: | |
22840 | case LOC_CONST_BYTES: | |
22841 | case LOC_OPTIMIZED_OUT: | |
22842 | case LOC_STATIC: | |
22843 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
22844 | case LOC_CONST: | |
22845 | /* Note: It's currently impossible to recognize psyms as enum values | |
22846 | short of reading the type info. For now punt. */ | |
22847 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
22848 | default: | |
22849 | /* There are other LOC_FOO values that one might want to classify | |
22850 | as variables, but dwarf2read.c doesn't currently use them. */ | |
22851 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
22852 | } | |
22853 | case STRUCT_DOMAIN: | |
22854 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
22855 | default: | |
22856 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
22857 | } | |
22858 | } | |
22859 | ||
9291a0cd | 22860 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 22861 | |
9291a0cd TT |
22862 | static void |
22863 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 22864 | htab_t psyms_seen, |
9291a0cd TT |
22865 | struct partial_symbol **psymp, |
22866 | int count, | |
987d643c TT |
22867 | offset_type cu_index, |
22868 | int is_static) | |
9291a0cd TT |
22869 | { |
22870 | for (; count-- > 0; ++psymp) | |
22871 | { | |
156942c7 DE |
22872 | struct partial_symbol *psym = *psymp; |
22873 | void **slot; | |
987d643c | 22874 | |
156942c7 | 22875 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 22876 | error (_("Ada is not currently supported by the index")); |
987d643c | 22877 | |
987d643c | 22878 | /* Only add a given psymbol once. */ |
156942c7 | 22879 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
22880 | if (!*slot) |
22881 | { | |
156942c7 DE |
22882 | gdb_index_symbol_kind kind = symbol_kind (psym); |
22883 | ||
22884 | *slot = psym; | |
22885 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
22886 | is_static, kind, cu_index); | |
987d643c | 22887 | } |
9291a0cd TT |
22888 | } |
22889 | } | |
22890 | ||
22891 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
22892 | exception if there is an error. */ | |
b89be57b | 22893 | |
9291a0cd TT |
22894 | static void |
22895 | write_obstack (FILE *file, struct obstack *obstack) | |
22896 | { | |
22897 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
22898 | file) | |
22899 | != obstack_object_size (obstack)) | |
22900 | error (_("couldn't data write to file")); | |
22901 | } | |
22902 | ||
22903 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 22904 | |
9291a0cd TT |
22905 | static void |
22906 | unlink_if_set (void *p) | |
22907 | { | |
22908 | char **filename = p; | |
22909 | if (*filename) | |
22910 | unlink (*filename); | |
22911 | } | |
22912 | ||
1fd400ff TT |
22913 | /* A helper struct used when iterating over debug_types. */ |
22914 | struct signatured_type_index_data | |
22915 | { | |
22916 | struct objfile *objfile; | |
22917 | struct mapped_symtab *symtab; | |
22918 | struct obstack *types_list; | |
987d643c | 22919 | htab_t psyms_seen; |
1fd400ff TT |
22920 | int cu_index; |
22921 | }; | |
22922 | ||
22923 | /* A helper function that writes a single signatured_type to an | |
22924 | obstack. */ | |
b89be57b | 22925 | |
1fd400ff TT |
22926 | static int |
22927 | write_one_signatured_type (void **slot, void *d) | |
22928 | { | |
22929 | struct signatured_type_index_data *info = d; | |
22930 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
0186c6a7 | 22931 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
22932 | gdb_byte val[8]; |
22933 | ||
22934 | write_psymbols (info->symtab, | |
987d643c | 22935 | info->psyms_seen, |
3e43a32a MS |
22936 | info->objfile->global_psymbols.list |
22937 | + psymtab->globals_offset, | |
987d643c TT |
22938 | psymtab->n_global_syms, info->cu_index, |
22939 | 0); | |
1fd400ff | 22940 | write_psymbols (info->symtab, |
987d643c | 22941 | info->psyms_seen, |
3e43a32a MS |
22942 | info->objfile->static_psymbols.list |
22943 | + psymtab->statics_offset, | |
987d643c TT |
22944 | psymtab->n_static_syms, info->cu_index, |
22945 | 1); | |
1fd400ff | 22946 | |
b64f50a1 JK |
22947 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22948 | entry->per_cu.offset.sect_off); | |
1fd400ff | 22949 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
22950 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22951 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
22952 | obstack_grow (info->types_list, val, 8); |
22953 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
22954 | obstack_grow (info->types_list, val, 8); | |
22955 | ||
22956 | ++info->cu_index; | |
22957 | ||
22958 | return 1; | |
22959 | } | |
22960 | ||
95554aad TT |
22961 | /* Recurse into all "included" dependencies and write their symbols as |
22962 | if they appeared in this psymtab. */ | |
22963 | ||
22964 | static void | |
22965 | recursively_write_psymbols (struct objfile *objfile, | |
22966 | struct partial_symtab *psymtab, | |
22967 | struct mapped_symtab *symtab, | |
22968 | htab_t psyms_seen, | |
22969 | offset_type cu_index) | |
22970 | { | |
22971 | int i; | |
22972 | ||
22973 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
22974 | if (psymtab->dependencies[i]->user != NULL) | |
22975 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
22976 | symtab, psyms_seen, cu_index); | |
22977 | ||
22978 | write_psymbols (symtab, | |
22979 | psyms_seen, | |
22980 | objfile->global_psymbols.list + psymtab->globals_offset, | |
22981 | psymtab->n_global_syms, cu_index, | |
22982 | 0); | |
22983 | write_psymbols (symtab, | |
22984 | psyms_seen, | |
22985 | objfile->static_psymbols.list + psymtab->statics_offset, | |
22986 | psymtab->n_static_syms, cu_index, | |
22987 | 1); | |
22988 | } | |
22989 | ||
9291a0cd | 22990 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 22991 | |
9291a0cd TT |
22992 | static void |
22993 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
22994 | { | |
22995 | struct cleanup *cleanup; | |
22996 | char *filename, *cleanup_filename; | |
1fd400ff TT |
22997 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
22998 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
22999 | int i; |
23000 | FILE *out_file; | |
23001 | struct mapped_symtab *symtab; | |
23002 | offset_type val, size_of_contents, total_len; | |
23003 | struct stat st; | |
987d643c | 23004 | htab_t psyms_seen; |
0a5429f6 DE |
23005 | htab_t cu_index_htab; |
23006 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 23007 | |
9291a0cd TT |
23008 | if (dwarf2_per_objfile->using_index) |
23009 | error (_("Cannot use an index to create the index")); | |
23010 | ||
8b70b953 TT |
23011 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
23012 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
23013 | ||
260b681b DE |
23014 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
23015 | return; | |
23016 | ||
4262abfb JK |
23017 | if (stat (objfile_name (objfile), &st) < 0) |
23018 | perror_with_name (objfile_name (objfile)); | |
9291a0cd | 23019 | |
4262abfb | 23020 | filename = concat (dir, SLASH_STRING, lbasename (objfile_name (objfile)), |
9291a0cd TT |
23021 | INDEX_SUFFIX, (char *) NULL); |
23022 | cleanup = make_cleanup (xfree, filename); | |
23023 | ||
614c279d | 23024 | out_file = gdb_fopen_cloexec (filename, "wb"); |
9291a0cd TT |
23025 | if (!out_file) |
23026 | error (_("Can't open `%s' for writing"), filename); | |
23027 | ||
23028 | cleanup_filename = filename; | |
23029 | make_cleanup (unlink_if_set, &cleanup_filename); | |
23030 | ||
23031 | symtab = create_mapped_symtab (); | |
23032 | make_cleanup (cleanup_mapped_symtab, symtab); | |
23033 | ||
23034 | obstack_init (&addr_obstack); | |
23035 | make_cleanup_obstack_free (&addr_obstack); | |
23036 | ||
23037 | obstack_init (&cu_list); | |
23038 | make_cleanup_obstack_free (&cu_list); | |
23039 | ||
1fd400ff TT |
23040 | obstack_init (&types_cu_list); |
23041 | make_cleanup_obstack_free (&types_cu_list); | |
23042 | ||
987d643c TT |
23043 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
23044 | NULL, xcalloc, xfree); | |
96408a79 | 23045 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 23046 | |
0a5429f6 DE |
23047 | /* While we're scanning CU's create a table that maps a psymtab pointer |
23048 | (which is what addrmap records) to its index (which is what is recorded | |
23049 | in the index file). This will later be needed to write the address | |
23050 | table. */ | |
23051 | cu_index_htab = htab_create_alloc (100, | |
23052 | hash_psymtab_cu_index, | |
23053 | eq_psymtab_cu_index, | |
23054 | NULL, xcalloc, xfree); | |
96408a79 | 23055 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
23056 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
23057 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
23058 | * dwarf2_per_objfile->n_comp_units); | |
23059 | make_cleanup (xfree, psymtab_cu_index_map); | |
23060 | ||
23061 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
23062 | work here. Also, the debug_types entries do not appear in |
23063 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
23064 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
23065 | { | |
3e43a32a MS |
23066 | struct dwarf2_per_cu_data *per_cu |
23067 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 23068 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 23069 | gdb_byte val[8]; |
0a5429f6 DE |
23070 | struct psymtab_cu_index_map *map; |
23071 | void **slot; | |
9291a0cd | 23072 | |
92fac807 JK |
23073 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
23074 | It may be referenced from a local scope but in such case it does not | |
23075 | need to be present in .gdb_index. */ | |
23076 | if (psymtab == NULL) | |
23077 | continue; | |
23078 | ||
95554aad TT |
23079 | if (psymtab->user == NULL) |
23080 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 23081 | |
0a5429f6 DE |
23082 | map = &psymtab_cu_index_map[i]; |
23083 | map->psymtab = psymtab; | |
23084 | map->cu_index = i; | |
23085 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
23086 | gdb_assert (slot != NULL); | |
23087 | gdb_assert (*slot == NULL); | |
23088 | *slot = map; | |
9291a0cd | 23089 | |
b64f50a1 JK |
23090 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23091 | per_cu->offset.sect_off); | |
9291a0cd | 23092 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 23093 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
23094 | obstack_grow (&cu_list, val, 8); |
23095 | } | |
23096 | ||
0a5429f6 DE |
23097 | /* Dump the address map. */ |
23098 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
23099 | ||
1fd400ff TT |
23100 | /* Write out the .debug_type entries, if any. */ |
23101 | if (dwarf2_per_objfile->signatured_types) | |
23102 | { | |
23103 | struct signatured_type_index_data sig_data; | |
23104 | ||
23105 | sig_data.objfile = objfile; | |
23106 | sig_data.symtab = symtab; | |
23107 | sig_data.types_list = &types_cu_list; | |
987d643c | 23108 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
23109 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
23110 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
23111 | write_one_signatured_type, &sig_data); | |
23112 | } | |
23113 | ||
156942c7 DE |
23114 | /* Now that we've processed all symbols we can shrink their cu_indices |
23115 | lists. */ | |
23116 | uniquify_cu_indices (symtab); | |
23117 | ||
9291a0cd TT |
23118 | obstack_init (&constant_pool); |
23119 | make_cleanup_obstack_free (&constant_pool); | |
23120 | obstack_init (&symtab_obstack); | |
23121 | make_cleanup_obstack_free (&symtab_obstack); | |
23122 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
23123 | ||
23124 | obstack_init (&contents); | |
23125 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 23126 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
23127 | total_len = size_of_contents; |
23128 | ||
23129 | /* The version number. */ | |
796a7ff8 | 23130 | val = MAYBE_SWAP (8); |
9291a0cd TT |
23131 | obstack_grow (&contents, &val, sizeof (val)); |
23132 | ||
23133 | /* The offset of the CU list from the start of the file. */ | |
23134 | val = MAYBE_SWAP (total_len); | |
23135 | obstack_grow (&contents, &val, sizeof (val)); | |
23136 | total_len += obstack_object_size (&cu_list); | |
23137 | ||
1fd400ff TT |
23138 | /* The offset of the types CU list from the start of the file. */ |
23139 | val = MAYBE_SWAP (total_len); | |
23140 | obstack_grow (&contents, &val, sizeof (val)); | |
23141 | total_len += obstack_object_size (&types_cu_list); | |
23142 | ||
9291a0cd TT |
23143 | /* The offset of the address table from the start of the file. */ |
23144 | val = MAYBE_SWAP (total_len); | |
23145 | obstack_grow (&contents, &val, sizeof (val)); | |
23146 | total_len += obstack_object_size (&addr_obstack); | |
23147 | ||
23148 | /* The offset of the symbol table from the start of the file. */ | |
23149 | val = MAYBE_SWAP (total_len); | |
23150 | obstack_grow (&contents, &val, sizeof (val)); | |
23151 | total_len += obstack_object_size (&symtab_obstack); | |
23152 | ||
23153 | /* The offset of the constant pool from the start of the file. */ | |
23154 | val = MAYBE_SWAP (total_len); | |
23155 | obstack_grow (&contents, &val, sizeof (val)); | |
23156 | total_len += obstack_object_size (&constant_pool); | |
23157 | ||
23158 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
23159 | ||
23160 | write_obstack (out_file, &contents); | |
23161 | write_obstack (out_file, &cu_list); | |
1fd400ff | 23162 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
23163 | write_obstack (out_file, &addr_obstack); |
23164 | write_obstack (out_file, &symtab_obstack); | |
23165 | write_obstack (out_file, &constant_pool); | |
23166 | ||
23167 | fclose (out_file); | |
23168 | ||
23169 | /* We want to keep the file, so we set cleanup_filename to NULL | |
23170 | here. See unlink_if_set. */ | |
23171 | cleanup_filename = NULL; | |
23172 | ||
23173 | do_cleanups (cleanup); | |
23174 | } | |
23175 | ||
90476074 TT |
23176 | /* Implementation of the `save gdb-index' command. |
23177 | ||
23178 | Note that the file format used by this command is documented in the | |
23179 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 23180 | |
9291a0cd TT |
23181 | static void |
23182 | save_gdb_index_command (char *arg, int from_tty) | |
23183 | { | |
23184 | struct objfile *objfile; | |
23185 | ||
23186 | if (!arg || !*arg) | |
96d19272 | 23187 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
23188 | |
23189 | ALL_OBJFILES (objfile) | |
23190 | { | |
23191 | struct stat st; | |
23192 | ||
23193 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 23194 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
23195 | continue; |
23196 | ||
23197 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
23198 | if (dwarf2_per_objfile) | |
23199 | { | |
9291a0cd | 23200 | |
492d29ea | 23201 | TRY |
9291a0cd TT |
23202 | { |
23203 | write_psymtabs_to_index (objfile, arg); | |
23204 | } | |
492d29ea PA |
23205 | CATCH (except, RETURN_MASK_ERROR) |
23206 | { | |
23207 | exception_fprintf (gdb_stderr, except, | |
23208 | _("Error while writing index for `%s': "), | |
23209 | objfile_name (objfile)); | |
23210 | } | |
23211 | END_CATCH | |
9291a0cd TT |
23212 | } |
23213 | } | |
dce234bc PP |
23214 | } |
23215 | ||
9291a0cd TT |
23216 | \f |
23217 | ||
9eae7c52 TT |
23218 | int dwarf2_always_disassemble; |
23219 | ||
23220 | static void | |
23221 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
23222 | struct cmd_list_element *c, const char *value) | |
23223 | { | |
3e43a32a MS |
23224 | fprintf_filtered (file, |
23225 | _("Whether to always disassemble " | |
23226 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
23227 | value); |
23228 | } | |
23229 | ||
900e11f9 JK |
23230 | static void |
23231 | show_check_physname (struct ui_file *file, int from_tty, | |
23232 | struct cmd_list_element *c, const char *value) | |
23233 | { | |
23234 | fprintf_filtered (file, | |
23235 | _("Whether to check \"physname\" is %s.\n"), | |
23236 | value); | |
23237 | } | |
23238 | ||
6502dd73 DJ |
23239 | void _initialize_dwarf2_read (void); |
23240 | ||
23241 | void | |
23242 | _initialize_dwarf2_read (void) | |
23243 | { | |
96d19272 JK |
23244 | struct cmd_list_element *c; |
23245 | ||
dce234bc | 23246 | dwarf2_objfile_data_key |
c1bd65d0 | 23247 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 23248 | |
1bedd215 AC |
23249 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
23250 | Set DWARF 2 specific variables.\n\ | |
23251 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
23252 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
23253 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
23254 | ||
1bedd215 AC |
23255 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
23256 | Show DWARF 2 specific variables\n\ | |
23257 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
23258 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
23259 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
23260 | ||
23261 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
23262 | &dwarf2_max_cache_age, _("\ |
23263 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
23264 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
23265 | A higher limit means that cached compilation units will be stored\n\ | |
23266 | in memory longer, and more total memory will be used. Zero disables\n\ | |
23267 | caching, which can slow down startup."), | |
2c5b56ce | 23268 | NULL, |
920d2a44 | 23269 | show_dwarf2_max_cache_age, |
2c5b56ce | 23270 | &set_dwarf2_cmdlist, |
ae038cb0 | 23271 | &show_dwarf2_cmdlist); |
d97bc12b | 23272 | |
9eae7c52 TT |
23273 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
23274 | &dwarf2_always_disassemble, _("\ | |
23275 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
23276 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
23277 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
23278 | syntax. When disabled, expressions will be printed in a more\n\ | |
23279 | conversational style, when possible."), | |
23280 | NULL, | |
23281 | show_dwarf2_always_disassemble, | |
23282 | &set_dwarf2_cmdlist, | |
23283 | &show_dwarf2_cmdlist); | |
23284 | ||
73be47f5 | 23285 | add_setshow_zuinteger_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
45cfd468 DE |
23286 | Set debugging of the dwarf2 reader."), _("\ |
23287 | Show debugging of the dwarf2 reader."), _("\ | |
73be47f5 DE |
23288 | When enabled (non-zero), debugging messages are printed during dwarf2\n\ |
23289 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
23290 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
23291 | NULL, |
23292 | NULL, | |
23293 | &setdebuglist, &showdebuglist); | |
23294 | ||
ccce17b0 | 23295 | add_setshow_zuinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
d97bc12b DE |
23296 | Set debugging of the dwarf2 DIE reader."), _("\ |
23297 | Show debugging of the dwarf2 DIE reader."), _("\ | |
23298 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
23299 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
23300 | NULL, |
23301 | NULL, | |
23302 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23303 | |
900e11f9 JK |
23304 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
23305 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
23306 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
23307 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
23308 | the demangler."), | |
23309 | NULL, show_check_physname, | |
23310 | &setdebuglist, &showdebuglist); | |
23311 | ||
e615022a DE |
23312 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
23313 | no_class, &use_deprecated_index_sections, _("\ | |
23314 | Set whether to use deprecated gdb_index sections."), _("\ | |
23315 | Show whether to use deprecated gdb_index sections."), _("\ | |
23316 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
23317 | Normally they are ignored either because of a missing feature or\n\ | |
23318 | performance issue.\n\ | |
23319 | Warning: This option must be enabled before gdb reads the file."), | |
23320 | NULL, | |
23321 | NULL, | |
23322 | &setlist, &showlist); | |
23323 | ||
96d19272 | 23324 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 23325 | _("\ |
fc1a9d6e | 23326 | Save a gdb-index file.\n\ |
11570e71 | 23327 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
23328 | &save_cmdlist); |
23329 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
23330 | |
23331 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23332 | &dwarf2_locexpr_funcs); | |
23333 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23334 | &dwarf2_loclist_funcs); | |
23335 | ||
23336 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23337 | &dwarf2_block_frame_base_locexpr_funcs); | |
23338 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23339 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 23340 | } |