Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
28e7fd62 | 3 | Copyright (C) 1994-2013 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c SS |
31 | #include "defs.h" |
32 | #include "bfd.h" | |
80626a55 | 33 | #include "elf-bfd.h" |
c906108c SS |
34 | #include "symtab.h" |
35 | #include "gdbtypes.h" | |
c906108c | 36 | #include "objfiles.h" |
fa8f86ff | 37 | #include "dwarf2.h" |
c906108c SS |
38 | #include "buildsym.h" |
39 | #include "demangle.h" | |
50f182aa | 40 | #include "gdb-demangle.h" |
c906108c | 41 | #include "expression.h" |
d5166ae1 | 42 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 43 | #include "macrotab.h" |
c906108c SS |
44 | #include "language.h" |
45 | #include "complaints.h" | |
357e46e7 | 46 | #include "bcache.h" |
4c2df51b DJ |
47 | #include "dwarf2expr.h" |
48 | #include "dwarf2loc.h" | |
9219021c | 49 | #include "cp-support.h" |
72bf9492 | 50 | #include "hashtab.h" |
ae038cb0 DJ |
51 | #include "command.h" |
52 | #include "gdbcmd.h" | |
edb3359d | 53 | #include "block.h" |
ff013f42 | 54 | #include "addrmap.h" |
94af9270 KS |
55 | #include "typeprint.h" |
56 | #include "jv-lang.h" | |
ccefe4c4 | 57 | #include "psympriv.h" |
9291a0cd TT |
58 | #include "exceptions.h" |
59 | #include "gdb_stat.h" | |
96d19272 | 60 | #include "completer.h" |
34eaf542 | 61 | #include "vec.h" |
98bfdba5 | 62 | #include "c-lang.h" |
a766d390 | 63 | #include "go-lang.h" |
98bfdba5 | 64 | #include "valprint.h" |
3019eac3 | 65 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 66 | #include "gdb/gdb-index.h" |
60d5a603 | 67 | #include <ctype.h> |
cbb099e8 | 68 | #include "gdb_bfd.h" |
4357ac6c | 69 | #include "f-lang.h" |
05cba821 | 70 | #include "source.h" |
614c279d | 71 | #include "filestuff.h" |
dc294be5 | 72 | #include "build-id.h" |
4c2df51b | 73 | |
c906108c SS |
74 | #include <fcntl.h> |
75 | #include "gdb_string.h" | |
4bdf3d34 | 76 | #include "gdb_assert.h" |
c906108c | 77 | #include <sys/types.h> |
d8151005 | 78 | |
34eaf542 TT |
79 | typedef struct symbol *symbolp; |
80 | DEF_VEC_P (symbolp); | |
81 | ||
45cfd468 DE |
82 | /* When non-zero, print basic high level tracing messages. |
83 | This is in contrast to the low level DIE reading of dwarf2_die_debug. */ | |
84 | static int dwarf2_read_debug = 0; | |
85 | ||
d97bc12b | 86 | /* When non-zero, dump DIEs after they are read in. */ |
ccce17b0 | 87 | static unsigned int dwarf2_die_debug = 0; |
d97bc12b | 88 | |
900e11f9 JK |
89 | /* When non-zero, cross-check physname against demangler. */ |
90 | static int check_physname = 0; | |
91 | ||
481860b3 | 92 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 93 | static int use_deprecated_index_sections = 0; |
481860b3 | 94 | |
6502dd73 DJ |
95 | static const struct objfile_data *dwarf2_objfile_data_key; |
96 | ||
f1e6e072 TT |
97 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
98 | ||
99 | static int dwarf2_locexpr_index; | |
100 | static int dwarf2_loclist_index; | |
101 | static int dwarf2_locexpr_block_index; | |
102 | static int dwarf2_loclist_block_index; | |
103 | ||
73869dc2 DE |
104 | /* A descriptor for dwarf sections. |
105 | ||
106 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
107 | scanned. BUFFER, READIN are filled in later when the section is read. | |
108 | If the section contained compressed data then SIZE is updated to record | |
109 | the uncompressed size of the section. | |
110 | ||
111 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
112 | creating the concept of virtual sections contained within a real section. | |
113 | In DWP V2 the sections of the input DWO files are concatenated together | |
114 | into one section, but section offsets are kept relative to the original | |
115 | input section. | |
116 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
117 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
118 | describe the virtual section. */ | |
119 | ||
dce234bc PP |
120 | struct dwarf2_section_info |
121 | { | |
73869dc2 DE |
122 | union |
123 | { | |
e5aa3347 | 124 | /* If this is a real section, the bfd section. */ |
73869dc2 DE |
125 | asection *asection; |
126 | /* If this is a virtual section, pointer to the containing ("real") | |
e5aa3347 | 127 | section. */ |
73869dc2 DE |
128 | struct dwarf2_section_info *containing_section; |
129 | } s; | |
19ac8c2e | 130 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 131 | const gdb_byte *buffer; |
73869dc2 | 132 | /* The size of the section, real or virtual. */ |
dce234bc | 133 | bfd_size_type size; |
73869dc2 DE |
134 | /* If this is a virtual section, the offset in the real section. |
135 | Only valid if is_virtual. */ | |
136 | bfd_size_type virtual_offset; | |
be391dca | 137 | /* True if we have tried to read this section. */ |
73869dc2 DE |
138 | char readin; |
139 | /* True if this is a virtual section, False otherwise. | |
140 | This specifies which of s.asection and s.containing_section to use. */ | |
141 | char is_virtual; | |
dce234bc PP |
142 | }; |
143 | ||
8b70b953 TT |
144 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
145 | DEF_VEC_O (dwarf2_section_info_def); | |
146 | ||
9291a0cd TT |
147 | /* All offsets in the index are of this type. It must be |
148 | architecture-independent. */ | |
149 | typedef uint32_t offset_type; | |
150 | ||
151 | DEF_VEC_I (offset_type); | |
152 | ||
156942c7 DE |
153 | /* Ensure only legit values are used. */ |
154 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
155 | do { \ | |
156 | gdb_assert ((unsigned int) (value) <= 1); \ | |
157 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
158 | } while (0) | |
159 | ||
160 | /* Ensure only legit values are used. */ | |
161 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
162 | do { \ | |
163 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
164 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
165 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
166 | } while (0) | |
167 | ||
168 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
169 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
170 | do { \ | |
171 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
172 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
173 | } while (0) | |
174 | ||
9291a0cd TT |
175 | /* A description of the mapped index. The file format is described in |
176 | a comment by the code that writes the index. */ | |
177 | struct mapped_index | |
178 | { | |
559a7a62 JK |
179 | /* Index data format version. */ |
180 | int version; | |
181 | ||
9291a0cd TT |
182 | /* The total length of the buffer. */ |
183 | off_t total_size; | |
b11b1f88 | 184 | |
9291a0cd TT |
185 | /* A pointer to the address table data. */ |
186 | const gdb_byte *address_table; | |
b11b1f88 | 187 | |
9291a0cd TT |
188 | /* Size of the address table data in bytes. */ |
189 | offset_type address_table_size; | |
b11b1f88 | 190 | |
3876f04e DE |
191 | /* The symbol table, implemented as a hash table. */ |
192 | const offset_type *symbol_table; | |
b11b1f88 | 193 | |
9291a0cd | 194 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 195 | offset_type symbol_table_slots; |
b11b1f88 | 196 | |
9291a0cd TT |
197 | /* A pointer to the constant pool. */ |
198 | const char *constant_pool; | |
199 | }; | |
200 | ||
95554aad TT |
201 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
202 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
203 | ||
9cdd5dbd DE |
204 | /* Collection of data recorded per objfile. |
205 | This hangs off of dwarf2_objfile_data_key. */ | |
206 | ||
6502dd73 DJ |
207 | struct dwarf2_per_objfile |
208 | { | |
dce234bc PP |
209 | struct dwarf2_section_info info; |
210 | struct dwarf2_section_info abbrev; | |
211 | struct dwarf2_section_info line; | |
dce234bc PP |
212 | struct dwarf2_section_info loc; |
213 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 214 | struct dwarf2_section_info macro; |
dce234bc PP |
215 | struct dwarf2_section_info str; |
216 | struct dwarf2_section_info ranges; | |
3019eac3 | 217 | struct dwarf2_section_info addr; |
dce234bc PP |
218 | struct dwarf2_section_info frame; |
219 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 220 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 221 | |
8b70b953 TT |
222 | VEC (dwarf2_section_info_def) *types; |
223 | ||
be391dca TT |
224 | /* Back link. */ |
225 | struct objfile *objfile; | |
226 | ||
d467dd73 | 227 | /* Table of all the compilation units. This is used to locate |
10b3939b | 228 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
229 | struct dwarf2_per_cu_data **all_comp_units; |
230 | ||
231 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
232 | int n_comp_units; | |
233 | ||
1fd400ff | 234 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 235 | int n_type_units; |
1fd400ff | 236 | |
a2ce51a0 DE |
237 | /* The .debug_types-related CUs (TUs). |
238 | This is stored in malloc space because we may realloc it. */ | |
b4dd5633 | 239 | struct signatured_type **all_type_units; |
1fd400ff | 240 | |
f4dc4d17 DE |
241 | /* The number of entries in all_type_unit_groups. */ |
242 | int n_type_unit_groups; | |
243 | ||
244 | /* Table of type unit groups. | |
245 | This exists to make it easy to iterate over all CUs and TU groups. */ | |
246 | struct type_unit_group **all_type_unit_groups; | |
247 | ||
248 | /* Table of struct type_unit_group objects. | |
249 | The hash key is the DW_AT_stmt_list value. */ | |
250 | htab_t type_unit_groups; | |
72dca2f5 | 251 | |
348e048f DE |
252 | /* A table mapping .debug_types signatures to its signatured_type entry. |
253 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
254 | htab_t signatured_types; | |
255 | ||
f4dc4d17 DE |
256 | /* Type unit statistics, to see how well the scaling improvements |
257 | are doing. */ | |
258 | struct tu_stats | |
259 | { | |
260 | int nr_uniq_abbrev_tables; | |
261 | int nr_symtabs; | |
262 | int nr_symtab_sharers; | |
263 | int nr_stmt_less_type_units; | |
264 | } tu_stats; | |
265 | ||
266 | /* A chain of compilation units that are currently read in, so that | |
267 | they can be freed later. */ | |
268 | struct dwarf2_per_cu_data *read_in_chain; | |
269 | ||
3019eac3 DE |
270 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
271 | This is NULL if the table hasn't been allocated yet. */ | |
272 | htab_t dwo_files; | |
273 | ||
80626a55 DE |
274 | /* Non-zero if we've check for whether there is a DWP file. */ |
275 | int dwp_checked; | |
276 | ||
277 | /* The DWP file if there is one, or NULL. */ | |
278 | struct dwp_file *dwp_file; | |
279 | ||
36586728 TT |
280 | /* The shared '.dwz' file, if one exists. This is used when the |
281 | original data was compressed using 'dwz -m'. */ | |
282 | struct dwz_file *dwz_file; | |
283 | ||
72dca2f5 FR |
284 | /* A flag indicating wether this objfile has a section loaded at a |
285 | VMA of 0. */ | |
286 | int has_section_at_zero; | |
9291a0cd | 287 | |
ae2de4f8 DE |
288 | /* True if we are using the mapped index, |
289 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
290 | unsigned char using_index; |
291 | ||
ae2de4f8 | 292 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 293 | struct mapped_index *index_table; |
98bfdba5 | 294 | |
7b9f3c50 | 295 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
296 | TUs typically share line table entries with a CU, so we maintain a |
297 | separate table of all line table entries to support the sharing. | |
298 | Note that while there can be way more TUs than CUs, we've already | |
299 | sorted all the TUs into "type unit groups", grouped by their | |
300 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
301 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
302 | htab_t quick_file_names_table; |
303 | ||
98bfdba5 PA |
304 | /* Set during partial symbol reading, to prevent queueing of full |
305 | symbols. */ | |
306 | int reading_partial_symbols; | |
673bfd45 | 307 | |
dee91e82 | 308 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 309 | This is NULL if not allocated yet. |
02142a6c | 310 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
dee91e82 | 311 | htab_t die_type_hash; |
95554aad TT |
312 | |
313 | /* The CUs we recently read. */ | |
314 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
6502dd73 DJ |
315 | }; |
316 | ||
317 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 318 | |
251d32d9 | 319 | /* Default names of the debugging sections. */ |
c906108c | 320 | |
233a11ab CS |
321 | /* Note that if the debugging section has been compressed, it might |
322 | have a name like .zdebug_info. */ | |
323 | ||
9cdd5dbd DE |
324 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
325 | { | |
251d32d9 TG |
326 | { ".debug_info", ".zdebug_info" }, |
327 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
328 | { ".debug_line", ".zdebug_line" }, | |
329 | { ".debug_loc", ".zdebug_loc" }, | |
330 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 331 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
332 | { ".debug_str", ".zdebug_str" }, |
333 | { ".debug_ranges", ".zdebug_ranges" }, | |
334 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 335 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
336 | { ".debug_frame", ".zdebug_frame" }, |
337 | { ".eh_frame", NULL }, | |
24d3216f TT |
338 | { ".gdb_index", ".zgdb_index" }, |
339 | 23 | |
251d32d9 | 340 | }; |
c906108c | 341 | |
80626a55 | 342 | /* List of DWO/DWP sections. */ |
3019eac3 | 343 | |
80626a55 | 344 | static const struct dwop_section_names |
3019eac3 DE |
345 | { |
346 | struct dwarf2_section_names abbrev_dwo; | |
347 | struct dwarf2_section_names info_dwo; | |
348 | struct dwarf2_section_names line_dwo; | |
349 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
350 | struct dwarf2_section_names macinfo_dwo; |
351 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
352 | struct dwarf2_section_names str_dwo; |
353 | struct dwarf2_section_names str_offsets_dwo; | |
354 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
355 | struct dwarf2_section_names cu_index; |
356 | struct dwarf2_section_names tu_index; | |
3019eac3 | 357 | } |
80626a55 | 358 | dwop_section_names = |
3019eac3 DE |
359 | { |
360 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
361 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
362 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
363 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
364 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
365 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
366 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
367 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
368 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
369 | { ".debug_cu_index", ".zdebug_cu_index" }, |
370 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
371 | }; |
372 | ||
c906108c SS |
373 | /* local data types */ |
374 | ||
107d2387 AC |
375 | /* The data in a compilation unit header, after target2host |
376 | translation, looks like this. */ | |
c906108c | 377 | struct comp_unit_head |
a738430d | 378 | { |
c764a876 | 379 | unsigned int length; |
a738430d | 380 | short version; |
a738430d MK |
381 | unsigned char addr_size; |
382 | unsigned char signed_addr_p; | |
b64f50a1 | 383 | sect_offset abbrev_offset; |
57349743 | 384 | |
a738430d MK |
385 | /* Size of file offsets; either 4 or 8. */ |
386 | unsigned int offset_size; | |
57349743 | 387 | |
a738430d MK |
388 | /* Size of the length field; either 4 or 12. */ |
389 | unsigned int initial_length_size; | |
57349743 | 390 | |
a738430d MK |
391 | /* Offset to the first byte of this compilation unit header in the |
392 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 393 | sect_offset offset; |
57349743 | 394 | |
d00adf39 DE |
395 | /* Offset to first die in this cu from the start of the cu. |
396 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 397 | cu_offset first_die_offset; |
a738430d | 398 | }; |
c906108c | 399 | |
3da10d80 KS |
400 | /* Type used for delaying computation of method physnames. |
401 | See comments for compute_delayed_physnames. */ | |
402 | struct delayed_method_info | |
403 | { | |
404 | /* The type to which the method is attached, i.e., its parent class. */ | |
405 | struct type *type; | |
406 | ||
407 | /* The index of the method in the type's function fieldlists. */ | |
408 | int fnfield_index; | |
409 | ||
410 | /* The index of the method in the fieldlist. */ | |
411 | int index; | |
412 | ||
413 | /* The name of the DIE. */ | |
414 | const char *name; | |
415 | ||
416 | /* The DIE associated with this method. */ | |
417 | struct die_info *die; | |
418 | }; | |
419 | ||
420 | typedef struct delayed_method_info delayed_method_info; | |
421 | DEF_VEC_O (delayed_method_info); | |
422 | ||
e7c27a73 DJ |
423 | /* Internal state when decoding a particular compilation unit. */ |
424 | struct dwarf2_cu | |
425 | { | |
426 | /* The objfile containing this compilation unit. */ | |
427 | struct objfile *objfile; | |
428 | ||
d00adf39 | 429 | /* The header of the compilation unit. */ |
e7c27a73 | 430 | struct comp_unit_head header; |
e142c38c | 431 | |
d00adf39 DE |
432 | /* Base address of this compilation unit. */ |
433 | CORE_ADDR base_address; | |
434 | ||
435 | /* Non-zero if base_address has been set. */ | |
436 | int base_known; | |
437 | ||
e142c38c DJ |
438 | /* The language we are debugging. */ |
439 | enum language language; | |
440 | const struct language_defn *language_defn; | |
441 | ||
b0f35d58 DL |
442 | const char *producer; |
443 | ||
e142c38c DJ |
444 | /* The generic symbol table building routines have separate lists for |
445 | file scope symbols and all all other scopes (local scopes). So | |
446 | we need to select the right one to pass to add_symbol_to_list(). | |
447 | We do it by keeping a pointer to the correct list in list_in_scope. | |
448 | ||
449 | FIXME: The original dwarf code just treated the file scope as the | |
450 | first local scope, and all other local scopes as nested local | |
451 | scopes, and worked fine. Check to see if we really need to | |
452 | distinguish these in buildsym.c. */ | |
453 | struct pending **list_in_scope; | |
454 | ||
433df2d4 DE |
455 | /* The abbrev table for this CU. |
456 | Normally this points to the abbrev table in the objfile. | |
457 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
458 | struct abbrev_table *abbrev_table; | |
72bf9492 | 459 | |
b64f50a1 JK |
460 | /* Hash table holding all the loaded partial DIEs |
461 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
462 | htab_t partial_dies; |
463 | ||
464 | /* Storage for things with the same lifetime as this read-in compilation | |
465 | unit, including partial DIEs. */ | |
466 | struct obstack comp_unit_obstack; | |
467 | ||
ae038cb0 DJ |
468 | /* When multiple dwarf2_cu structures are living in memory, this field |
469 | chains them all together, so that they can be released efficiently. | |
470 | We will probably also want a generation counter so that most-recently-used | |
471 | compilation units are cached... */ | |
472 | struct dwarf2_per_cu_data *read_in_chain; | |
473 | ||
69d751e3 | 474 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
475 | struct dwarf2_per_cu_data *per_cu; |
476 | ||
477 | /* How many compilation units ago was this CU last referenced? */ | |
478 | int last_used; | |
479 | ||
b64f50a1 JK |
480 | /* A hash table of DIE cu_offset for following references with |
481 | die_info->offset.sect_off as hash. */ | |
51545339 | 482 | htab_t die_hash; |
10b3939b DJ |
483 | |
484 | /* Full DIEs if read in. */ | |
485 | struct die_info *dies; | |
486 | ||
487 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
488 | units referenced by this one. Only set during full symbol processing; | |
489 | partial symbol tables do not have dependencies. */ | |
490 | htab_t dependencies; | |
491 | ||
cb1df416 DJ |
492 | /* Header data from the line table, during full symbol processing. */ |
493 | struct line_header *line_header; | |
494 | ||
3da10d80 KS |
495 | /* A list of methods which need to have physnames computed |
496 | after all type information has been read. */ | |
497 | VEC (delayed_method_info) *method_list; | |
498 | ||
96408a79 SA |
499 | /* To be copied to symtab->call_site_htab. */ |
500 | htab_t call_site_htab; | |
501 | ||
034e5797 DE |
502 | /* Non-NULL if this CU came from a DWO file. |
503 | There is an invariant here that is important to remember: | |
504 | Except for attributes copied from the top level DIE in the "main" | |
505 | (or "stub") file in preparation for reading the DWO file | |
506 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
507 | Either there isn't a DWO file (in which case this is NULL and the point | |
508 | is moot), or there is and either we're not going to read it (in which | |
509 | case this is NULL) or there is and we are reading it (in which case this | |
510 | is non-NULL). */ | |
3019eac3 DE |
511 | struct dwo_unit *dwo_unit; |
512 | ||
513 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
514 | (zero is a valid value though). | |
515 | Note this value comes from the stub CU/TU's DIE. */ | |
516 | ULONGEST addr_base; | |
517 | ||
2e3cf129 DE |
518 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
519 | (zero is a valid value though). | |
520 | Note this value comes from the stub CU/TU's DIE. | |
521 | Also note that the value is zero in the non-DWO case so this value can | |
ab435259 DE |
522 | be used without needing to know whether DWO files are in use or not. |
523 | N.B. This does not apply to DW_AT_ranges appearing in | |
524 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
525 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
526 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
527 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
528 | ULONGEST ranges_base; |
529 | ||
ae038cb0 DJ |
530 | /* Mark used when releasing cached dies. */ |
531 | unsigned int mark : 1; | |
532 | ||
8be455d7 JK |
533 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
534 | This test is imperfect as there may exist optimized debug code not using | |
535 | any location list and still facing inlining issues if handled as | |
536 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 537 | unsigned int has_loclist : 1; |
ba919b58 | 538 | |
1b80a9fa JK |
539 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
540 | if all the producer_is_* fields are valid. This information is cached | |
541 | because profiling CU expansion showed excessive time spent in | |
542 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
543 | unsigned int checked_producer : 1; |
544 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 545 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 546 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
547 | |
548 | /* When set, the file that we're processing is known to have | |
549 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
550 | this information, but later versions do. */ | |
551 | ||
552 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
553 | }; |
554 | ||
10b3939b DJ |
555 | /* Persistent data held for a compilation unit, even when not |
556 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 557 | read_symtab_private field of the psymtab. */ |
10b3939b | 558 | |
ae038cb0 DJ |
559 | struct dwarf2_per_cu_data |
560 | { | |
36586728 | 561 | /* The start offset and length of this compilation unit. |
45452591 | 562 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
563 | initial_length_size. |
564 | If the DIE refers to a DWO file, this is always of the original die, | |
565 | not the DWO file. */ | |
b64f50a1 | 566 | sect_offset offset; |
36586728 | 567 | unsigned int length; |
ae038cb0 DJ |
568 | |
569 | /* Flag indicating this compilation unit will be read in before | |
570 | any of the current compilation units are processed. */ | |
c764a876 | 571 | unsigned int queued : 1; |
ae038cb0 | 572 | |
0d99eb77 DE |
573 | /* This flag will be set when reading partial DIEs if we need to load |
574 | absolutely all DIEs for this compilation unit, instead of just the ones | |
575 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
576 | hash table and don't find it. */ |
577 | unsigned int load_all_dies : 1; | |
578 | ||
0186c6a7 DE |
579 | /* Non-zero if this CU is from .debug_types. |
580 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
581 | this is non-zero. */ | |
3019eac3 DE |
582 | unsigned int is_debug_types : 1; |
583 | ||
36586728 TT |
584 | /* Non-zero if this CU is from the .dwz file. */ |
585 | unsigned int is_dwz : 1; | |
586 | ||
a2ce51a0 DE |
587 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
588 | This flag is only valid if is_debug_types is true. | |
589 | We can't read a CU directly from a DWO file: There are required | |
590 | attributes in the stub. */ | |
591 | unsigned int reading_dwo_directly : 1; | |
592 | ||
7ee85ab1 DE |
593 | /* Non-zero if the TU has been read. |
594 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
595 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
596 | fetching them from random other DWOs (due to comdat folding). | |
597 | If the TU has already been read, the optimization is unnecessary | |
598 | (and unwise - we don't want to change where gdb thinks the TU lives | |
599 | "midflight"). | |
600 | This flag is only valid if is_debug_types is true. */ | |
601 | unsigned int tu_read : 1; | |
602 | ||
3019eac3 DE |
603 | /* The section this CU/TU lives in. |
604 | If the DIE refers to a DWO file, this is always the original die, | |
605 | not the DWO file. */ | |
8a0459fd | 606 | struct dwarf2_section_info *section; |
348e048f | 607 | |
17ea53c3 JK |
608 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
609 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 610 | struct dwarf2_cu *cu; |
1c379e20 | 611 | |
9cdd5dbd DE |
612 | /* The corresponding objfile. |
613 | Normally we can get the objfile from dwarf2_per_objfile. | |
614 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
615 | struct objfile *objfile; |
616 | ||
617 | /* When using partial symbol tables, the 'psymtab' field is active. | |
618 | Otherwise the 'quick' field is active. */ | |
619 | union | |
620 | { | |
621 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 622 | or NULL for unread partial units. */ |
9291a0cd TT |
623 | struct partial_symtab *psymtab; |
624 | ||
625 | /* Data needed by the "quick" functions. */ | |
626 | struct dwarf2_per_cu_quick_data *quick; | |
627 | } v; | |
95554aad | 628 | |
796a7ff8 DE |
629 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
630 | while reading psymtabs, used to compute the psymtab dependencies, | |
631 | and then cleared. Then it is filled in again while reading full | |
632 | symbols, and only deleted when the objfile is destroyed. | |
633 | ||
634 | This is also used to work around a difference between the way gold | |
635 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
636 | is a gold bug. For symbols coming from TUs, gold records in the index | |
637 | the CU that includes the TU instead of the TU itself. This breaks | |
638 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
639 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
640 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
641 | we need to look in TU Z to find X. Fortunately, this is akin to | |
642 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
643 | .gdb_index version <=7 this also records the TUs that the CU referred | |
644 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
645 | indices so we only pay a price for gold generated indices. |
646 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 647 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
648 | }; |
649 | ||
348e048f DE |
650 | /* Entry in the signatured_types hash table. */ |
651 | ||
652 | struct signatured_type | |
653 | { | |
42e7ad6c | 654 | /* The "per_cu" object of this type. |
ac9ec31b | 655 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
656 | N.B.: This is the first member so that it's easy to convert pointers |
657 | between them. */ | |
658 | struct dwarf2_per_cu_data per_cu; | |
659 | ||
3019eac3 | 660 | /* The type's signature. */ |
348e048f DE |
661 | ULONGEST signature; |
662 | ||
3019eac3 | 663 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
664 | If this TU is a DWO stub and the definition lives in a DWO file |
665 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
666 | cu_offset type_offset_in_tu; |
667 | ||
668 | /* Offset in the section of the type's DIE. | |
669 | If the definition lives in a DWO file, this is the offset in the | |
670 | .debug_types.dwo section. | |
671 | The value is zero until the actual value is known. | |
672 | Zero is otherwise not a valid section offset. */ | |
673 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
674 | |
675 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
676 | can share them. This points to the containing symtab. */ | |
677 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
678 | |
679 | /* The type. | |
680 | The first time we encounter this type we fully read it in and install it | |
681 | in the symbol tables. Subsequent times we only need the type. */ | |
682 | struct type *type; | |
a2ce51a0 DE |
683 | |
684 | /* Containing DWO unit. | |
685 | This field is valid iff per_cu.reading_dwo_directly. */ | |
686 | struct dwo_unit *dwo_unit; | |
348e048f DE |
687 | }; |
688 | ||
0186c6a7 DE |
689 | typedef struct signatured_type *sig_type_ptr; |
690 | DEF_VEC_P (sig_type_ptr); | |
691 | ||
094b34ac DE |
692 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
693 | This includes type_unit_group and quick_file_names. */ | |
694 | ||
695 | struct stmt_list_hash | |
696 | { | |
697 | /* The DWO unit this table is from or NULL if there is none. */ | |
698 | struct dwo_unit *dwo_unit; | |
699 | ||
700 | /* Offset in .debug_line or .debug_line.dwo. */ | |
701 | sect_offset line_offset; | |
702 | }; | |
703 | ||
f4dc4d17 DE |
704 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
705 | an object of this type. */ | |
706 | ||
707 | struct type_unit_group | |
708 | { | |
0186c6a7 | 709 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
710 | To simplify things we create an artificial CU that "includes" all the |
711 | type units using this stmt_list so that the rest of the code still has | |
712 | a "per_cu" handle on the symtab. | |
713 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 714 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
715 | struct dwarf2_per_cu_data per_cu; |
716 | ||
0186c6a7 DE |
717 | /* The TUs that share this DW_AT_stmt_list entry. |
718 | This is added to while parsing type units to build partial symtabs, | |
719 | and is deleted afterwards and not used again. */ | |
720 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 DE |
721 | |
722 | /* The primary symtab. | |
094b34ac DE |
723 | Type units in a group needn't all be defined in the same source file, |
724 | so we create an essentially anonymous symtab as the primary symtab. */ | |
f4dc4d17 DE |
725 | struct symtab *primary_symtab; |
726 | ||
094b34ac DE |
727 | /* The data used to construct the hash key. */ |
728 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
729 | |
730 | /* The number of symtabs from the line header. | |
731 | The value here must match line_header.num_file_names. */ | |
732 | unsigned int num_symtabs; | |
733 | ||
734 | /* The symbol tables for this TU (obtained from the files listed in | |
735 | DW_AT_stmt_list). | |
736 | WARNING: The order of entries here must match the order of entries | |
737 | in the line header. After the first TU using this type_unit_group, the | |
738 | line header for the subsequent TUs is recreated from this. This is done | |
739 | because we need to use the same symtabs for each TU using the same | |
740 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
741 | there's no guarantee the line header doesn't have duplicate entries. */ | |
742 | struct symtab **symtabs; | |
743 | }; | |
744 | ||
73869dc2 | 745 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
746 | |
747 | struct dwo_sections | |
748 | { | |
749 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
750 | struct dwarf2_section_info line; |
751 | struct dwarf2_section_info loc; | |
09262596 DE |
752 | struct dwarf2_section_info macinfo; |
753 | struct dwarf2_section_info macro; | |
3019eac3 DE |
754 | struct dwarf2_section_info str; |
755 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
756 | /* In the case of a virtual DWO file, these two are unused. */ |
757 | struct dwarf2_section_info info; | |
3019eac3 DE |
758 | VEC (dwarf2_section_info_def) *types; |
759 | }; | |
760 | ||
c88ee1f0 | 761 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
762 | |
763 | struct dwo_unit | |
764 | { | |
765 | /* Backlink to the containing struct dwo_file. */ | |
766 | struct dwo_file *dwo_file; | |
767 | ||
768 | /* The "id" that distinguishes this CU/TU. | |
769 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
770 | Since signatures came first, we stick with it for consistency. */ | |
771 | ULONGEST signature; | |
772 | ||
773 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 774 | struct dwarf2_section_info *section; |
3019eac3 | 775 | |
19ac8c2e | 776 | /* Same as dwarf2_per_cu_data:{offset,length} but in the DWO section. */ |
3019eac3 DE |
777 | sect_offset offset; |
778 | unsigned int length; | |
779 | ||
780 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
781 | cu_offset type_offset_in_tu; | |
782 | }; | |
783 | ||
73869dc2 DE |
784 | /* include/dwarf2.h defines the DWP section codes. |
785 | It defines a max value but it doesn't define a min value, which we | |
786 | use for error checking, so provide one. */ | |
787 | ||
788 | enum dwp_v2_section_ids | |
789 | { | |
790 | DW_SECT_MIN = 1 | |
791 | }; | |
792 | ||
80626a55 | 793 | /* Data for one DWO file. |
57d63ce2 DE |
794 | |
795 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
796 | appears in a DWP file). DWP files don't really have DWO files per se - | |
797 | comdat folding of types "loses" the DWO file they came from, and from | |
798 | a high level view DWP files appear to contain a mass of random types. | |
799 | However, to maintain consistency with the non-DWP case we pretend DWP | |
800 | files contain virtual DWO files, and we assign each TU with one virtual | |
801 | DWO file (generally based on the line and abbrev section offsets - | |
802 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
803 | |
804 | struct dwo_file | |
805 | { | |
0ac5b59e | 806 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
807 | For virtual DWO files the name is constructed from the section offsets |
808 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
809 | from related CU+TUs. */ | |
0ac5b59e DE |
810 | const char *dwo_name; |
811 | ||
812 | /* The DW_AT_comp_dir attribute. */ | |
813 | const char *comp_dir; | |
3019eac3 | 814 | |
80626a55 DE |
815 | /* The bfd, when the file is open. Otherwise this is NULL. |
816 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
817 | bfd *dbfd; | |
3019eac3 | 818 | |
73869dc2 DE |
819 | /* The sections that make up this DWO file. |
820 | Remember that for virtual DWO files in DWP V2, these are virtual | |
821 | sections (for lack of a better name). */ | |
3019eac3 DE |
822 | struct dwo_sections sections; |
823 | ||
19c3d4c9 DE |
824 | /* The CU in the file. |
825 | We only support one because having more than one requires hacking the | |
826 | dwo_name of each to match, which is highly unlikely to happen. | |
827 | Doing this means all TUs can share comp_dir: We also assume that | |
828 | DW_AT_comp_dir across all TUs in a DWO file will be identical. */ | |
829 | struct dwo_unit *cu; | |
3019eac3 DE |
830 | |
831 | /* Table of TUs in the file. | |
832 | Each element is a struct dwo_unit. */ | |
833 | htab_t tus; | |
834 | }; | |
835 | ||
80626a55 DE |
836 | /* These sections are what may appear in a DWP file. */ |
837 | ||
838 | struct dwp_sections | |
839 | { | |
73869dc2 | 840 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
841 | struct dwarf2_section_info str; |
842 | struct dwarf2_section_info cu_index; | |
843 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
844 | |
845 | /* These are only used by DWP version 2 files. | |
846 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
847 | sections are referenced by section number, and are not recorded here. | |
848 | In DWP version 2 there is at most one copy of all these sections, each | |
849 | section being (effectively) comprised of the concatenation of all of the | |
850 | individual sections that exist in the version 1 format. | |
851 | To keep the code simple we treat each of these concatenated pieces as a | |
852 | section itself (a virtual section?). */ | |
853 | struct dwarf2_section_info abbrev; | |
854 | struct dwarf2_section_info info; | |
855 | struct dwarf2_section_info line; | |
856 | struct dwarf2_section_info loc; | |
857 | struct dwarf2_section_info macinfo; | |
858 | struct dwarf2_section_info macro; | |
859 | struct dwarf2_section_info str_offsets; | |
860 | struct dwarf2_section_info types; | |
80626a55 DE |
861 | }; |
862 | ||
73869dc2 DE |
863 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
864 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 865 | |
73869dc2 | 866 | struct virtual_v1_dwo_sections |
80626a55 DE |
867 | { |
868 | struct dwarf2_section_info abbrev; | |
869 | struct dwarf2_section_info line; | |
870 | struct dwarf2_section_info loc; | |
871 | struct dwarf2_section_info macinfo; | |
872 | struct dwarf2_section_info macro; | |
873 | struct dwarf2_section_info str_offsets; | |
874 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 875 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
876 | struct dwarf2_section_info info_or_types; |
877 | }; | |
878 | ||
73869dc2 DE |
879 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
880 | In version 2, the sections of the DWO files are concatenated together | |
881 | and stored in one section of that name. Thus each ELF section contains | |
882 | several "virtual" sections. */ | |
883 | ||
884 | struct virtual_v2_dwo_sections | |
885 | { | |
886 | bfd_size_type abbrev_offset; | |
887 | bfd_size_type abbrev_size; | |
888 | ||
889 | bfd_size_type line_offset; | |
890 | bfd_size_type line_size; | |
891 | ||
892 | bfd_size_type loc_offset; | |
893 | bfd_size_type loc_size; | |
894 | ||
895 | bfd_size_type macinfo_offset; | |
896 | bfd_size_type macinfo_size; | |
897 | ||
898 | bfd_size_type macro_offset; | |
899 | bfd_size_type macro_size; | |
900 | ||
901 | bfd_size_type str_offsets_offset; | |
902 | bfd_size_type str_offsets_size; | |
903 | ||
904 | /* Each DWP hash table entry records one CU or one TU. | |
905 | That is recorded here, and copied to dwo_unit.section. */ | |
906 | bfd_size_type info_or_types_offset; | |
907 | bfd_size_type info_or_types_size; | |
908 | }; | |
909 | ||
80626a55 DE |
910 | /* Contents of DWP hash tables. */ |
911 | ||
912 | struct dwp_hash_table | |
913 | { | |
73869dc2 | 914 | uint32_t version, nr_columns; |
80626a55 | 915 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
916 | const gdb_byte *hash_table, *unit_table; |
917 | union | |
918 | { | |
919 | struct | |
920 | { | |
921 | const gdb_byte *indices; | |
922 | } v1; | |
923 | struct | |
924 | { | |
925 | /* This is indexed by column number and gives the id of the section | |
926 | in that column. */ | |
927 | #define MAX_NR_V2_DWO_SECTIONS \ | |
928 | (1 /* .debug_info or .debug_types */ \ | |
929 | + 1 /* .debug_abbrev */ \ | |
930 | + 1 /* .debug_line */ \ | |
931 | + 1 /* .debug_loc */ \ | |
932 | + 1 /* .debug_str_offsets */ \ | |
933 | + 1 /* .debug_macro or .debug_macinfo */) | |
934 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
935 | const gdb_byte *offsets; | |
936 | const gdb_byte *sizes; | |
937 | } v2; | |
938 | } section_pool; | |
80626a55 DE |
939 | }; |
940 | ||
941 | /* Data for one DWP file. */ | |
942 | ||
943 | struct dwp_file | |
944 | { | |
945 | /* Name of the file. */ | |
946 | const char *name; | |
947 | ||
73869dc2 DE |
948 | /* File format version. */ |
949 | int version; | |
950 | ||
93417882 | 951 | /* The bfd. */ |
80626a55 DE |
952 | bfd *dbfd; |
953 | ||
954 | /* Section info for this file. */ | |
955 | struct dwp_sections sections; | |
956 | ||
57d63ce2 | 957 | /* Table of CUs in the file. */ |
80626a55 DE |
958 | const struct dwp_hash_table *cus; |
959 | ||
960 | /* Table of TUs in the file. */ | |
961 | const struct dwp_hash_table *tus; | |
962 | ||
19ac8c2e DE |
963 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
964 | htab_t loaded_cus; | |
965 | htab_t loaded_tus; | |
80626a55 | 966 | |
73869dc2 DE |
967 | /* Table to map ELF section numbers to their sections. |
968 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
969 | unsigned int num_sections; |
970 | asection **elf_sections; | |
971 | }; | |
972 | ||
36586728 TT |
973 | /* This represents a '.dwz' file. */ |
974 | ||
975 | struct dwz_file | |
976 | { | |
977 | /* A dwz file can only contain a few sections. */ | |
978 | struct dwarf2_section_info abbrev; | |
979 | struct dwarf2_section_info info; | |
980 | struct dwarf2_section_info str; | |
981 | struct dwarf2_section_info line; | |
982 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 983 | struct dwarf2_section_info gdb_index; |
36586728 TT |
984 | |
985 | /* The dwz's BFD. */ | |
986 | bfd *dwz_bfd; | |
987 | }; | |
988 | ||
0963b4bd MS |
989 | /* Struct used to pass misc. parameters to read_die_and_children, et |
990 | al. which are used for both .debug_info and .debug_types dies. | |
991 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 992 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
993 | |
994 | struct die_reader_specs | |
995 | { | |
a32a8923 | 996 | /* The bfd of die_section. */ |
93311388 DE |
997 | bfd* abfd; |
998 | ||
999 | /* The CU of the DIE we are parsing. */ | |
1000 | struct dwarf2_cu *cu; | |
1001 | ||
80626a55 | 1002 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1003 | struct dwo_file *dwo_file; |
1004 | ||
dee91e82 | 1005 | /* The section the die comes from. |
3019eac3 | 1006 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1007 | struct dwarf2_section_info *die_section; |
1008 | ||
1009 | /* die_section->buffer. */ | |
d521ce57 | 1010 | const gdb_byte *buffer; |
f664829e DE |
1011 | |
1012 | /* The end of the buffer. */ | |
1013 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1014 | |
1015 | /* The value of the DW_AT_comp_dir attribute. */ | |
1016 | const char *comp_dir; | |
93311388 DE |
1017 | }; |
1018 | ||
fd820528 | 1019 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1020 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1021 | const gdb_byte *info_ptr, |
dee91e82 DE |
1022 | struct die_info *comp_unit_die, |
1023 | int has_children, | |
1024 | void *data); | |
1025 | ||
debd256d JB |
1026 | /* The line number information for a compilation unit (found in the |
1027 | .debug_line section) begins with a "statement program header", | |
1028 | which contains the following information. */ | |
1029 | struct line_header | |
1030 | { | |
1031 | unsigned int total_length; | |
1032 | unsigned short version; | |
1033 | unsigned int header_length; | |
1034 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 1035 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
1036 | unsigned char default_is_stmt; |
1037 | int line_base; | |
1038 | unsigned char line_range; | |
1039 | unsigned char opcode_base; | |
1040 | ||
1041 | /* standard_opcode_lengths[i] is the number of operands for the | |
1042 | standard opcode whose value is i. This means that | |
1043 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1044 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
1045 | unsigned char *standard_opcode_lengths; | |
1046 | ||
1047 | /* The include_directories table. NOTE! These strings are not | |
1048 | allocated with xmalloc; instead, they are pointers into | |
1049 | debug_line_buffer. If you try to free them, `free' will get | |
1050 | indigestion. */ | |
1051 | unsigned int num_include_dirs, include_dirs_size; | |
d521ce57 | 1052 | const char **include_dirs; |
debd256d JB |
1053 | |
1054 | /* The file_names table. NOTE! These strings are not allocated | |
1055 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
1056 | Don't try to free them directly. */ | |
1057 | unsigned int num_file_names, file_names_size; | |
1058 | struct file_entry | |
c906108c | 1059 | { |
d521ce57 | 1060 | const char *name; |
debd256d JB |
1061 | unsigned int dir_index; |
1062 | unsigned int mod_time; | |
1063 | unsigned int length; | |
aaa75496 | 1064 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 1065 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
1066 | } *file_names; |
1067 | ||
1068 | /* The start and end of the statement program following this | |
6502dd73 | 1069 | header. These point into dwarf2_per_objfile->line_buffer. */ |
d521ce57 | 1070 | const gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 1071 | }; |
c906108c SS |
1072 | |
1073 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 1074 | need this much information. */ |
c906108c SS |
1075 | struct partial_die_info |
1076 | { | |
72bf9492 | 1077 | /* Offset of this DIE. */ |
b64f50a1 | 1078 | sect_offset offset; |
72bf9492 DJ |
1079 | |
1080 | /* DWARF-2 tag for this DIE. */ | |
1081 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1082 | ||
72bf9492 DJ |
1083 | /* Assorted flags describing the data found in this DIE. */ |
1084 | unsigned int has_children : 1; | |
1085 | unsigned int is_external : 1; | |
1086 | unsigned int is_declaration : 1; | |
1087 | unsigned int has_type : 1; | |
1088 | unsigned int has_specification : 1; | |
1089 | unsigned int has_pc_info : 1; | |
481860b3 | 1090 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
1091 | |
1092 | /* Flag set if the SCOPE field of this structure has been | |
1093 | computed. */ | |
1094 | unsigned int scope_set : 1; | |
1095 | ||
fa4028e9 JB |
1096 | /* Flag set if the DIE has a byte_size attribute. */ |
1097 | unsigned int has_byte_size : 1; | |
1098 | ||
98bfdba5 PA |
1099 | /* Flag set if any of the DIE's children are template arguments. */ |
1100 | unsigned int has_template_arguments : 1; | |
1101 | ||
abc72ce4 DE |
1102 | /* Flag set if fixup_partial_die has been called on this die. */ |
1103 | unsigned int fixup_called : 1; | |
1104 | ||
36586728 TT |
1105 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1106 | unsigned int is_dwz : 1; | |
1107 | ||
1108 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1109 | unsigned int spec_is_dwz : 1; | |
1110 | ||
72bf9492 | 1111 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1112 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1113 | const char *name; |
72bf9492 | 1114 | |
abc72ce4 DE |
1115 | /* The linkage name, if present. */ |
1116 | const char *linkage_name; | |
1117 | ||
72bf9492 DJ |
1118 | /* The scope to prepend to our children. This is generally |
1119 | allocated on the comp_unit_obstack, so will disappear | |
1120 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1121 | const char *scope; |
72bf9492 | 1122 | |
95554aad TT |
1123 | /* Some data associated with the partial DIE. The tag determines |
1124 | which field is live. */ | |
1125 | union | |
1126 | { | |
1127 | /* The location description associated with this DIE, if any. */ | |
1128 | struct dwarf_block *locdesc; | |
1129 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
1130 | sect_offset offset; | |
1131 | } d; | |
72bf9492 DJ |
1132 | |
1133 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1134 | CORE_ADDR lowpc; |
1135 | CORE_ADDR highpc; | |
72bf9492 | 1136 | |
93311388 | 1137 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1138 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1139 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1140 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1141 | const gdb_byte *sibling; |
72bf9492 DJ |
1142 | |
1143 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1144 | DW_AT_specification (or DW_AT_abstract_origin or | |
1145 | DW_AT_extension). */ | |
b64f50a1 | 1146 | sect_offset spec_offset; |
72bf9492 DJ |
1147 | |
1148 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1149 | if any. */ | |
1150 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1151 | }; |
1152 | ||
0963b4bd | 1153 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1154 | struct abbrev_info |
1155 | { | |
1156 | unsigned int number; /* number identifying abbrev */ | |
1157 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1158 | unsigned short has_children; /* boolean */ |
1159 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1160 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1161 | struct abbrev_info *next; /* next in chain */ | |
1162 | }; | |
1163 | ||
1164 | struct attr_abbrev | |
1165 | { | |
9d25dd43 DE |
1166 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1167 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
1168 | }; |
1169 | ||
433df2d4 DE |
1170 | /* Size of abbrev_table.abbrev_hash_table. */ |
1171 | #define ABBREV_HASH_SIZE 121 | |
1172 | ||
1173 | /* Top level data structure to contain an abbreviation table. */ | |
1174 | ||
1175 | struct abbrev_table | |
1176 | { | |
f4dc4d17 DE |
1177 | /* Where the abbrev table came from. |
1178 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1179 | sect_offset offset; |
1180 | ||
1181 | /* Storage for the abbrev table. */ | |
1182 | struct obstack abbrev_obstack; | |
1183 | ||
1184 | /* Hash table of abbrevs. | |
1185 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1186 | It could be statically allocated, but the previous code didn't so we | |
1187 | don't either. */ | |
1188 | struct abbrev_info **abbrevs; | |
1189 | }; | |
1190 | ||
0963b4bd | 1191 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1192 | struct attribute |
1193 | { | |
9d25dd43 | 1194 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1195 | ENUM_BITFIELD(dwarf_form) form : 15; |
1196 | ||
1197 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1198 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1199 | here for better struct attribute alignment. */ | |
1200 | unsigned int string_is_canonical : 1; | |
1201 | ||
b60c80d6 DJ |
1202 | union |
1203 | { | |
15d034d0 | 1204 | const char *str; |
b60c80d6 | 1205 | struct dwarf_block *blk; |
43bbcdc2 PH |
1206 | ULONGEST unsnd; |
1207 | LONGEST snd; | |
b60c80d6 | 1208 | CORE_ADDR addr; |
ac9ec31b | 1209 | ULONGEST signature; |
b60c80d6 DJ |
1210 | } |
1211 | u; | |
1212 | }; | |
1213 | ||
0963b4bd | 1214 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1215 | struct die_info |
1216 | { | |
76815b17 DE |
1217 | /* DWARF-2 tag for this DIE. */ |
1218 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1219 | ||
1220 | /* Number of attributes */ | |
98bfdba5 PA |
1221 | unsigned char num_attrs; |
1222 | ||
1223 | /* True if we're presently building the full type name for the | |
1224 | type derived from this DIE. */ | |
1225 | unsigned char building_fullname : 1; | |
76815b17 DE |
1226 | |
1227 | /* Abbrev number */ | |
1228 | unsigned int abbrev; | |
1229 | ||
93311388 | 1230 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1231 | sect_offset offset; |
78ba4af6 JB |
1232 | |
1233 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1234 | points to this die's parent; CHILD points to the first child of | |
1235 | this node; and all the children of a given node are chained | |
4950bc1c | 1236 | together via their SIBLING fields. */ |
639d11d3 DC |
1237 | struct die_info *child; /* Its first child, if any. */ |
1238 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1239 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1240 | |
b60c80d6 DJ |
1241 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1242 | zero, but it's not common and zero-sized arrays are not | |
1243 | sufficiently portable C. */ | |
1244 | struct attribute attrs[1]; | |
c906108c SS |
1245 | }; |
1246 | ||
0963b4bd | 1247 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1248 | |
1249 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1250 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1251 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1252 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1253 | #define DW_SND(attr) ((attr)->u.snd) | |
1254 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1255 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1256 | |
0963b4bd | 1257 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1258 | struct dwarf_block |
1259 | { | |
56eb65bd | 1260 | size_t size; |
1d6edc3c JK |
1261 | |
1262 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1263 | const gdb_byte *data; |
c906108c SS |
1264 | }; |
1265 | ||
c906108c SS |
1266 | #ifndef ATTR_ALLOC_CHUNK |
1267 | #define ATTR_ALLOC_CHUNK 4 | |
1268 | #endif | |
1269 | ||
c906108c SS |
1270 | /* Allocate fields for structs, unions and enums in this size. */ |
1271 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1272 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1273 | #endif | |
1274 | ||
c906108c SS |
1275 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1276 | but this would require a corresponding change in unpack_field_as_long | |
1277 | and friends. */ | |
1278 | static int bits_per_byte = 8; | |
1279 | ||
1280 | /* The routines that read and process dies for a C struct or C++ class | |
1281 | pass lists of data member fields and lists of member function fields | |
1282 | in an instance of a field_info structure, as defined below. */ | |
1283 | struct field_info | |
c5aa993b | 1284 | { |
0963b4bd | 1285 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
1286 | struct nextfield |
1287 | { | |
1288 | struct nextfield *next; | |
1289 | int accessibility; | |
1290 | int virtuality; | |
1291 | struct field field; | |
1292 | } | |
7d0ccb61 | 1293 | *fields, *baseclasses; |
c906108c | 1294 | |
7d0ccb61 | 1295 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1296 | int nfields; |
c906108c | 1297 | |
c5aa993b JM |
1298 | /* Number of baseclasses. */ |
1299 | int nbaseclasses; | |
c906108c | 1300 | |
c5aa993b JM |
1301 | /* Set if the accesibility of one of the fields is not public. */ |
1302 | int non_public_fields; | |
c906108c | 1303 | |
c5aa993b JM |
1304 | /* Member function fields array, entries are allocated in the order they |
1305 | are encountered in the object file. */ | |
1306 | struct nextfnfield | |
1307 | { | |
1308 | struct nextfnfield *next; | |
1309 | struct fn_field fnfield; | |
1310 | } | |
1311 | *fnfields; | |
c906108c | 1312 | |
c5aa993b JM |
1313 | /* Member function fieldlist array, contains name of possibly overloaded |
1314 | member function, number of overloaded member functions and a pointer | |
1315 | to the head of the member function field chain. */ | |
1316 | struct fnfieldlist | |
1317 | { | |
15d034d0 | 1318 | const char *name; |
c5aa993b JM |
1319 | int length; |
1320 | struct nextfnfield *head; | |
1321 | } | |
1322 | *fnfieldlists; | |
c906108c | 1323 | |
c5aa993b JM |
1324 | /* Number of entries in the fnfieldlists array. */ |
1325 | int nfnfields; | |
98751a41 JK |
1326 | |
1327 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1328 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1329 | struct typedef_field_list | |
1330 | { | |
1331 | struct typedef_field field; | |
1332 | struct typedef_field_list *next; | |
1333 | } | |
1334 | *typedef_field_list; | |
1335 | unsigned typedef_field_list_count; | |
c5aa993b | 1336 | }; |
c906108c | 1337 | |
10b3939b DJ |
1338 | /* One item on the queue of compilation units to read in full symbols |
1339 | for. */ | |
1340 | struct dwarf2_queue_item | |
1341 | { | |
1342 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1343 | enum language pretend_language; |
10b3939b DJ |
1344 | struct dwarf2_queue_item *next; |
1345 | }; | |
1346 | ||
1347 | /* The current queue. */ | |
1348 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1349 | ||
ae038cb0 DJ |
1350 | /* Loaded secondary compilation units are kept in memory until they |
1351 | have not been referenced for the processing of this many | |
1352 | compilation units. Set this to zero to disable caching. Cache | |
1353 | sizes of up to at least twenty will improve startup time for | |
1354 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
1355 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
1356 | static void |
1357 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
1358 | struct cmd_list_element *c, const char *value) | |
1359 | { | |
3e43a32a MS |
1360 | fprintf_filtered (file, _("The upper bound on the age of cached " |
1361 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
1362 | value); |
1363 | } | |
4390d890 | 1364 | \f |
c906108c SS |
1365 | /* local function prototypes */ |
1366 | ||
a32a8923 DE |
1367 | static const char *get_section_name (const struct dwarf2_section_info *); |
1368 | ||
1369 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1370 | ||
4efb68b1 | 1371 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1372 | |
918dd910 JK |
1373 | static void dwarf2_find_base_address (struct die_info *die, |
1374 | struct dwarf2_cu *cu); | |
1375 | ||
0018ea6f DE |
1376 | static struct partial_symtab *create_partial_symtab |
1377 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1378 | ||
c67a9c90 | 1379 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1380 | |
72bf9492 DJ |
1381 | static void scan_partial_symbols (struct partial_die_info *, |
1382 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1383 | int, struct dwarf2_cu *); |
c906108c | 1384 | |
72bf9492 DJ |
1385 | static void add_partial_symbol (struct partial_die_info *, |
1386 | struct dwarf2_cu *); | |
63d06c5c | 1387 | |
72bf9492 DJ |
1388 | static void add_partial_namespace (struct partial_die_info *pdi, |
1389 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1390 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1391 | |
5d7cb8df JK |
1392 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1393 | CORE_ADDR *highpc, int need_pc, | |
1394 | struct dwarf2_cu *cu); | |
1395 | ||
72bf9492 DJ |
1396 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1397 | struct dwarf2_cu *cu); | |
91c24f0a | 1398 | |
bc30ff58 JB |
1399 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1400 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1401 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1402 | |
257e7a09 YQ |
1403 | static void dwarf2_read_symtab (struct partial_symtab *, |
1404 | struct objfile *); | |
c906108c | 1405 | |
a14ed312 | 1406 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1407 | |
433df2d4 DE |
1408 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1409 | (const struct abbrev_table *, unsigned int); | |
1410 | ||
1411 | static struct abbrev_table *abbrev_table_read_table | |
1412 | (struct dwarf2_section_info *, sect_offset); | |
1413 | ||
1414 | static void abbrev_table_free (struct abbrev_table *); | |
1415 | ||
f4dc4d17 DE |
1416 | static void abbrev_table_free_cleanup (void *); |
1417 | ||
dee91e82 DE |
1418 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1419 | struct dwarf2_section_info *); | |
c906108c | 1420 | |
f3dd6933 | 1421 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1422 | |
d521ce57 | 1423 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1424 | |
dee91e82 | 1425 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1426 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1427 | |
d521ce57 TT |
1428 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1429 | struct partial_die_info *, | |
1430 | struct abbrev_info *, | |
1431 | unsigned int, | |
1432 | const gdb_byte *); | |
c906108c | 1433 | |
36586728 | 1434 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1435 | struct dwarf2_cu *); |
72bf9492 DJ |
1436 | |
1437 | static void fixup_partial_die (struct partial_die_info *, | |
1438 | struct dwarf2_cu *); | |
1439 | ||
d521ce57 TT |
1440 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1441 | struct attribute *, struct attr_abbrev *, | |
1442 | const gdb_byte *); | |
a8329558 | 1443 | |
a1855c1d | 1444 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1445 | |
a1855c1d | 1446 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1447 | |
a1855c1d | 1448 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1449 | |
a1855c1d | 1450 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1451 | |
a1855c1d | 1452 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1453 | |
d521ce57 | 1454 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1455 | unsigned int *); |
c906108c | 1456 | |
d521ce57 | 1457 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1458 | |
1459 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1460 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1461 | unsigned int *, unsigned int *); |
613e1657 | 1462 | |
d521ce57 TT |
1463 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1464 | const struct comp_unit_head *, | |
c764a876 DE |
1465 | unsigned int *); |
1466 | ||
d521ce57 | 1467 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1468 | |
f4dc4d17 DE |
1469 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1470 | sect_offset); | |
1471 | ||
d521ce57 | 1472 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1473 | |
d521ce57 | 1474 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1475 | |
d521ce57 TT |
1476 | static const char *read_indirect_string (bfd *, const gdb_byte *, |
1477 | const struct comp_unit_head *, | |
1478 | unsigned int *); | |
4bdf3d34 | 1479 | |
d521ce57 | 1480 | static const char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
36586728 | 1481 | |
d521ce57 | 1482 | static ULONGEST read_unsigned_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1483 | |
d521ce57 | 1484 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1485 | |
d521ce57 TT |
1486 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1487 | const gdb_byte *, | |
3019eac3 DE |
1488 | unsigned int *); |
1489 | ||
d521ce57 TT |
1490 | static const char *read_str_index (const struct die_reader_specs *reader, |
1491 | struct dwarf2_cu *cu, ULONGEST str_index); | |
3019eac3 | 1492 | |
e142c38c | 1493 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1494 | |
e142c38c DJ |
1495 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1496 | struct dwarf2_cu *); | |
c906108c | 1497 | |
348e048f | 1498 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1499 | unsigned int); |
348e048f | 1500 | |
05cf31d1 JB |
1501 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1502 | struct dwarf2_cu *cu); | |
1503 | ||
e142c38c | 1504 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1505 | |
e142c38c | 1506 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1507 | struct dwarf2_cu **); |
63d06c5c | 1508 | |
debd256d JB |
1509 | static void free_line_header (struct line_header *lh); |
1510 | ||
3019eac3 DE |
1511 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1512 | struct dwarf2_cu *cu); | |
debd256d | 1513 | |
f3f5162e DE |
1514 | static void dwarf_decode_lines (struct line_header *, const char *, |
1515 | struct dwarf2_cu *, struct partial_symtab *, | |
1516 | int); | |
c906108c | 1517 | |
d521ce57 | 1518 | static void dwarf2_start_subfile (const char *, const char *, const char *); |
c906108c | 1519 | |
f4dc4d17 | 1520 | static void dwarf2_start_symtab (struct dwarf2_cu *, |
15d034d0 | 1521 | const char *, const char *, CORE_ADDR); |
f4dc4d17 | 1522 | |
a14ed312 | 1523 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1524 | struct dwarf2_cu *); |
c906108c | 1525 | |
34eaf542 TT |
1526 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1527 | struct dwarf2_cu *, struct symbol *); | |
1528 | ||
ff39bb5e | 1529 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1530 | struct dwarf2_cu *); |
c906108c | 1531 | |
ff39bb5e | 1532 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1533 | struct type *type, |
1534 | const char *name, | |
1535 | struct obstack *obstack, | |
12df843f | 1536 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1537 | const gdb_byte **bytes, |
98bfdba5 | 1538 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1539 | |
e7c27a73 | 1540 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1541 | |
b4ba55a1 JB |
1542 | static int need_gnat_info (struct dwarf2_cu *); |
1543 | ||
3e43a32a MS |
1544 | static struct type *die_descriptive_type (struct die_info *, |
1545 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1546 | |
1547 | static void set_descriptive_type (struct type *, struct die_info *, | |
1548 | struct dwarf2_cu *); | |
1549 | ||
e7c27a73 DJ |
1550 | static struct type *die_containing_type (struct die_info *, |
1551 | struct dwarf2_cu *); | |
c906108c | 1552 | |
ff39bb5e | 1553 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1554 | struct dwarf2_cu *); |
c906108c | 1555 | |
f792889a | 1556 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1557 | |
673bfd45 DE |
1558 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1559 | ||
0d5cff50 | 1560 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1561 | |
6e70227d | 1562 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1563 | const char *suffix, int physname, |
1564 | struct dwarf2_cu *cu); | |
63d06c5c | 1565 | |
e7c27a73 | 1566 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1567 | |
348e048f DE |
1568 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1569 | ||
e7c27a73 | 1570 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1571 | |
e7c27a73 | 1572 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1573 | |
96408a79 SA |
1574 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1575 | ||
ff013f42 JK |
1576 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1577 | struct dwarf2_cu *, struct partial_symtab *); | |
1578 | ||
a14ed312 | 1579 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1580 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1581 | struct partial_symtab *); | |
c906108c | 1582 | |
fae299cd DC |
1583 | static void get_scope_pc_bounds (struct die_info *, |
1584 | CORE_ADDR *, CORE_ADDR *, | |
1585 | struct dwarf2_cu *); | |
1586 | ||
801e3a5b JB |
1587 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1588 | CORE_ADDR, struct dwarf2_cu *); | |
1589 | ||
a14ed312 | 1590 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1591 | struct dwarf2_cu *); |
c906108c | 1592 | |
a14ed312 | 1593 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1594 | struct type *, struct dwarf2_cu *); |
c906108c | 1595 | |
a14ed312 | 1596 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1597 | struct die_info *, struct type *, |
e7c27a73 | 1598 | struct dwarf2_cu *); |
c906108c | 1599 | |
a14ed312 | 1600 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1601 | struct type *, |
1602 | struct dwarf2_cu *); | |
c906108c | 1603 | |
134d01f1 | 1604 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1605 | |
e7c27a73 | 1606 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1607 | |
e7c27a73 | 1608 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1609 | |
5d7cb8df JK |
1610 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1611 | ||
27aa8d6a SW |
1612 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1613 | ||
f55ee35c JK |
1614 | static struct type *read_module_type (struct die_info *die, |
1615 | struct dwarf2_cu *cu); | |
1616 | ||
38d518c9 | 1617 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1618 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1619 | |
134d01f1 | 1620 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1621 | |
e7c27a73 | 1622 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1623 | |
6e70227d | 1624 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1625 | struct dwarf2_cu *); |
1626 | ||
bf6af496 | 1627 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1628 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1629 | struct die_info *); |
639d11d3 | 1630 | |
dee91e82 | 1631 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1632 | const gdb_byte *info_ptr, |
1633 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1634 | struct die_info *parent); |
1635 | ||
d521ce57 TT |
1636 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1637 | struct die_info **, const gdb_byte *, | |
1638 | int *, int); | |
3019eac3 | 1639 | |
d521ce57 TT |
1640 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1641 | struct die_info **, const gdb_byte *, | |
1642 | int *); | |
93311388 | 1643 | |
e7c27a73 | 1644 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1645 | |
15d034d0 TT |
1646 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1647 | struct obstack *); | |
71c25dea | 1648 | |
15d034d0 | 1649 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1650 | |
15d034d0 | 1651 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1652 | struct die_info *die, |
1653 | struct dwarf2_cu *cu); | |
1654 | ||
ca69b9e6 DE |
1655 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1656 | struct dwarf2_cu *cu); | |
1657 | ||
e142c38c | 1658 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1659 | struct dwarf2_cu **); |
9219021c | 1660 | |
f39c6ffd | 1661 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1662 | |
f39c6ffd | 1663 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1664 | |
f39c6ffd | 1665 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1666 | |
a14ed312 | 1667 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1668 | |
f39c6ffd | 1669 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1670 | |
f9aca02d | 1671 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1672 | |
d97bc12b DE |
1673 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1674 | ||
1675 | static void dump_die_for_error (struct die_info *); | |
1676 | ||
1677 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1678 | struct die_info *); | |
c906108c | 1679 | |
d97bc12b | 1680 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1681 | |
51545339 | 1682 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1683 | struct dwarf2_cu *); |
c906108c | 1684 | |
ff39bb5e | 1685 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1686 | |
ff39bb5e | 1687 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1688 | |
348e048f | 1689 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1690 | const struct attribute *, |
348e048f DE |
1691 | struct dwarf2_cu **); |
1692 | ||
10b3939b | 1693 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1694 | const struct attribute *, |
f2f0e013 | 1695 | struct dwarf2_cu **); |
c906108c | 1696 | |
348e048f | 1697 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1698 | const struct attribute *, |
348e048f DE |
1699 | struct dwarf2_cu **); |
1700 | ||
ac9ec31b DE |
1701 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1702 | struct dwarf2_cu *); | |
1703 | ||
1704 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1705 | const struct attribute *, |
ac9ec31b DE |
1706 | struct dwarf2_cu *); |
1707 | ||
e5fe5e75 | 1708 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1709 | |
52dc124a | 1710 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1711 | |
f4dc4d17 | 1712 | static struct type_unit_group *get_type_unit_group |
ff39bb5e | 1713 | (struct dwarf2_cu *, const struct attribute *); |
f4dc4d17 DE |
1714 | |
1715 | static void build_type_unit_groups (die_reader_func_ftype *, void *); | |
1716 | ||
c906108c SS |
1717 | /* memory allocation interface */ |
1718 | ||
7b5a2f43 | 1719 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1720 | |
b60c80d6 | 1721 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1722 | |
09262596 | 1723 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, |
15d034d0 | 1724 | const char *, int); |
2e276125 | 1725 | |
6e5a29e1 | 1726 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1727 | |
6e5a29e1 | 1728 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1729 | |
6e5a29e1 | 1730 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1731 | |
6e5a29e1 | 1732 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1733 | |
8cf6f0b1 TT |
1734 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1735 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1736 | const struct attribute *attr); |
8cf6f0b1 | 1737 | |
ff39bb5e | 1738 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1739 | struct symbol *sym, |
f1e6e072 TT |
1740 | struct dwarf2_cu *cu, |
1741 | int is_block); | |
4c2df51b | 1742 | |
d521ce57 TT |
1743 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1744 | const gdb_byte *info_ptr, | |
1745 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1746 | |
72bf9492 DJ |
1747 | static void free_stack_comp_unit (void *); |
1748 | ||
72bf9492 DJ |
1749 | static hashval_t partial_die_hash (const void *item); |
1750 | ||
1751 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1752 | ||
ae038cb0 | 1753 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1754 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1755 | |
9816fde3 | 1756 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1757 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1758 | |
1759 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1760 | struct die_info *comp_unit_die, |
1761 | enum language pretend_language); | |
93311388 | 1762 | |
68dc6402 | 1763 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1764 | |
1765 | static void free_cached_comp_units (void *); | |
1766 | ||
1767 | static void age_cached_comp_units (void); | |
1768 | ||
dee91e82 | 1769 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1770 | |
f792889a DJ |
1771 | static struct type *set_die_type (struct die_info *, struct type *, |
1772 | struct dwarf2_cu *); | |
1c379e20 | 1773 | |
ae038cb0 DJ |
1774 | static void create_all_comp_units (struct objfile *); |
1775 | ||
0e50663e | 1776 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1777 | |
95554aad TT |
1778 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1779 | enum language); | |
10b3939b | 1780 | |
95554aad TT |
1781 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1782 | enum language); | |
10b3939b | 1783 | |
f4dc4d17 DE |
1784 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1785 | enum language); | |
1786 | ||
10b3939b DJ |
1787 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1788 | struct dwarf2_per_cu_data *); | |
1789 | ||
ae038cb0 DJ |
1790 | static void dwarf2_mark (struct dwarf2_cu *); |
1791 | ||
1792 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1793 | ||
b64f50a1 | 1794 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1795 | struct dwarf2_per_cu_data *); |
673bfd45 | 1796 | |
f792889a | 1797 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1798 | |
9291a0cd TT |
1799 | static void dwarf2_release_queue (void *dummy); |
1800 | ||
95554aad TT |
1801 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1802 | enum language pretend_language); | |
1803 | ||
a0f42c21 | 1804 | static void process_queue (void); |
9291a0cd TT |
1805 | |
1806 | static void find_file_and_directory (struct die_info *die, | |
1807 | struct dwarf2_cu *cu, | |
15d034d0 | 1808 | const char **name, const char **comp_dir); |
9291a0cd TT |
1809 | |
1810 | static char *file_full_name (int file, struct line_header *lh, | |
1811 | const char *comp_dir); | |
1812 | ||
d521ce57 | 1813 | static const gdb_byte *read_and_check_comp_unit_head |
36586728 TT |
1814 | (struct comp_unit_head *header, |
1815 | struct dwarf2_section_info *section, | |
d521ce57 | 1816 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
36586728 TT |
1817 | int is_debug_types_section); |
1818 | ||
fd820528 | 1819 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1820 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1821 | int use_existing_cu, int keep, | |
3019eac3 DE |
1822 | die_reader_func_ftype *die_reader_func, void *data); |
1823 | ||
dee91e82 DE |
1824 | static void init_cutu_and_read_dies_simple |
1825 | (struct dwarf2_per_cu_data *this_cu, | |
1826 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1827 | |
673bfd45 | 1828 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1829 | |
3019eac3 DE |
1830 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1831 | ||
57d63ce2 DE |
1832 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
1833 | (struct dwp_file *dwp_file, const char *comp_dir, | |
1834 | ULONGEST signature, int is_debug_types); | |
a2ce51a0 DE |
1835 | |
1836 | static struct dwp_file *get_dwp_file (void); | |
1837 | ||
3019eac3 | 1838 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1839 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1840 | |
1841 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1842 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1843 | |
89e63ee4 DE |
1844 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1845 | ||
3019eac3 DE |
1846 | static void free_dwo_file_cleanup (void *); |
1847 | ||
95554aad TT |
1848 | static void process_cu_includes (void); |
1849 | ||
1b80a9fa | 1850 | static void check_producer (struct dwarf2_cu *cu); |
4390d890 DE |
1851 | \f |
1852 | /* Various complaints about symbol reading that don't abort the process. */ | |
1853 | ||
1854 | static void | |
1855 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1856 | { | |
1857 | complaint (&symfile_complaints, | |
1858 | _("statement list doesn't fit in .debug_line section")); | |
1859 | } | |
1860 | ||
1861 | static void | |
1862 | dwarf2_debug_line_missing_file_complaint (void) | |
1863 | { | |
1864 | complaint (&symfile_complaints, | |
1865 | _(".debug_line section has line data without a file")); | |
1866 | } | |
1867 | ||
1868 | static void | |
1869 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1870 | { | |
1871 | complaint (&symfile_complaints, | |
1872 | _(".debug_line section has line " | |
1873 | "program sequence without an end")); | |
1874 | } | |
1875 | ||
1876 | static void | |
1877 | dwarf2_complex_location_expr_complaint (void) | |
1878 | { | |
1879 | complaint (&symfile_complaints, _("location expression too complex")); | |
1880 | } | |
1881 | ||
1882 | static void | |
1883 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1884 | int arg3) | |
1885 | { | |
1886 | complaint (&symfile_complaints, | |
1887 | _("const value length mismatch for '%s', got %d, expected %d"), | |
1888 | arg1, arg2, arg3); | |
1889 | } | |
1890 | ||
1891 | static void | |
1892 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1893 | { | |
1894 | complaint (&symfile_complaints, | |
1895 | _("debug info runs off end of %s section" | |
1896 | " [in module %s]"), | |
a32a8923 DE |
1897 | get_section_name (section), |
1898 | get_section_file_name (section)); | |
4390d890 | 1899 | } |
1b80a9fa | 1900 | |
4390d890 DE |
1901 | static void |
1902 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1903 | { | |
1904 | complaint (&symfile_complaints, | |
1905 | _("macro debug info contains a " | |
1906 | "malformed macro definition:\n`%s'"), | |
1907 | arg1); | |
1908 | } | |
1909 | ||
1910 | static void | |
1911 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1912 | { | |
1913 | complaint (&symfile_complaints, | |
1914 | _("invalid attribute class or form for '%s' in '%s'"), | |
1915 | arg1, arg2); | |
1916 | } | |
1917 | \f | |
9291a0cd TT |
1918 | #if WORDS_BIGENDIAN |
1919 | ||
1920 | /* Convert VALUE between big- and little-endian. */ | |
1921 | static offset_type | |
1922 | byte_swap (offset_type value) | |
1923 | { | |
1924 | offset_type result; | |
1925 | ||
1926 | result = (value & 0xff) << 24; | |
1927 | result |= (value & 0xff00) << 8; | |
1928 | result |= (value & 0xff0000) >> 8; | |
1929 | result |= (value & 0xff000000) >> 24; | |
1930 | return result; | |
1931 | } | |
1932 | ||
1933 | #define MAYBE_SWAP(V) byte_swap (V) | |
1934 | ||
1935 | #else | |
1936 | #define MAYBE_SWAP(V) (V) | |
1937 | #endif /* WORDS_BIGENDIAN */ | |
1938 | ||
1939 | /* The suffix for an index file. */ | |
1940 | #define INDEX_SUFFIX ".gdb-index" | |
1941 | ||
c906108c | 1942 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1943 | information and return true if we have enough to do something. |
1944 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1945 | ELF names are used. */ | |
c906108c SS |
1946 | |
1947 | int | |
251d32d9 TG |
1948 | dwarf2_has_info (struct objfile *objfile, |
1949 | const struct dwarf2_debug_sections *names) | |
c906108c | 1950 | { |
be391dca TT |
1951 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1952 | if (!dwarf2_per_objfile) | |
1953 | { | |
1954 | /* Initialize per-objfile state. */ | |
1955 | struct dwarf2_per_objfile *data | |
1956 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1957 | |
be391dca TT |
1958 | memset (data, 0, sizeof (*data)); |
1959 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1960 | dwarf2_per_objfile = data; | |
6502dd73 | 1961 | |
251d32d9 TG |
1962 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1963 | (void *) names); | |
be391dca TT |
1964 | dwarf2_per_objfile->objfile = objfile; |
1965 | } | |
73869dc2 DE |
1966 | return (!dwarf2_per_objfile->info.is_virtual |
1967 | && dwarf2_per_objfile->info.s.asection != NULL | |
1968 | && !dwarf2_per_objfile->abbrev.is_virtual | |
1969 | && dwarf2_per_objfile->abbrev.s.asection != NULL); | |
1970 | } | |
1971 | ||
1972 | /* Return the containing section of virtual section SECTION. */ | |
1973 | ||
1974 | static struct dwarf2_section_info * | |
1975 | get_containing_section (const struct dwarf2_section_info *section) | |
1976 | { | |
1977 | gdb_assert (section->is_virtual); | |
1978 | return section->s.containing_section; | |
c906108c SS |
1979 | } |
1980 | ||
a32a8923 DE |
1981 | /* Return the bfd owner of SECTION. */ |
1982 | ||
1983 | static struct bfd * | |
1984 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
1985 | { | |
73869dc2 DE |
1986 | if (section->is_virtual) |
1987 | { | |
1988 | section = get_containing_section (section); | |
1989 | gdb_assert (!section->is_virtual); | |
1990 | } | |
1991 | return section->s.asection->owner; | |
a32a8923 DE |
1992 | } |
1993 | ||
1994 | /* Return the bfd section of SECTION. | |
1995 | Returns NULL if the section is not present. */ | |
1996 | ||
1997 | static asection * | |
1998 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
1999 | { | |
73869dc2 DE |
2000 | if (section->is_virtual) |
2001 | { | |
2002 | section = get_containing_section (section); | |
2003 | gdb_assert (!section->is_virtual); | |
2004 | } | |
2005 | return section->s.asection; | |
a32a8923 DE |
2006 | } |
2007 | ||
2008 | /* Return the name of SECTION. */ | |
2009 | ||
2010 | static const char * | |
2011 | get_section_name (const struct dwarf2_section_info *section) | |
2012 | { | |
2013 | asection *sectp = get_section_bfd_section (section); | |
2014 | ||
2015 | gdb_assert (sectp != NULL); | |
2016 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2017 | } | |
2018 | ||
2019 | /* Return the name of the file SECTION is in. */ | |
2020 | ||
2021 | static const char * | |
2022 | get_section_file_name (const struct dwarf2_section_info *section) | |
2023 | { | |
2024 | bfd *abfd = get_section_bfd_owner (section); | |
2025 | ||
2026 | return bfd_get_filename (abfd); | |
2027 | } | |
2028 | ||
2029 | /* Return the id of SECTION. | |
2030 | Returns 0 if SECTION doesn't exist. */ | |
2031 | ||
2032 | static int | |
2033 | get_section_id (const struct dwarf2_section_info *section) | |
2034 | { | |
2035 | asection *sectp = get_section_bfd_section (section); | |
2036 | ||
2037 | if (sectp == NULL) | |
2038 | return 0; | |
2039 | return sectp->id; | |
2040 | } | |
2041 | ||
2042 | /* Return the flags of SECTION. | |
73869dc2 | 2043 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2044 | |
2045 | static int | |
2046 | get_section_flags (const struct dwarf2_section_info *section) | |
2047 | { | |
2048 | asection *sectp = get_section_bfd_section (section); | |
2049 | ||
2050 | gdb_assert (sectp != NULL); | |
2051 | return bfd_get_section_flags (sectp->owner, sectp); | |
2052 | } | |
2053 | ||
251d32d9 TG |
2054 | /* When loading sections, we look either for uncompressed section or for |
2055 | compressed section names. */ | |
233a11ab CS |
2056 | |
2057 | static int | |
251d32d9 TG |
2058 | section_is_p (const char *section_name, |
2059 | const struct dwarf2_section_names *names) | |
233a11ab | 2060 | { |
251d32d9 TG |
2061 | if (names->normal != NULL |
2062 | && strcmp (section_name, names->normal) == 0) | |
2063 | return 1; | |
2064 | if (names->compressed != NULL | |
2065 | && strcmp (section_name, names->compressed) == 0) | |
2066 | return 1; | |
2067 | return 0; | |
233a11ab CS |
2068 | } |
2069 | ||
c906108c SS |
2070 | /* This function is mapped across the sections and remembers the |
2071 | offset and size of each of the debugging sections we are interested | |
2072 | in. */ | |
2073 | ||
2074 | static void | |
251d32d9 | 2075 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 2076 | { |
251d32d9 | 2077 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 2078 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
2079 | |
2080 | if (vnames == NULL) | |
2081 | names = &dwarf2_elf_names; | |
2082 | else | |
2083 | names = (const struct dwarf2_debug_sections *) vnames; | |
2084 | ||
dc7650b8 JK |
2085 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2086 | { | |
2087 | } | |
2088 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 2089 | { |
73869dc2 | 2090 | dwarf2_per_objfile->info.s.asection = sectp; |
dce234bc | 2091 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); |
c906108c | 2092 | } |
251d32d9 | 2093 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 2094 | { |
73869dc2 | 2095 | dwarf2_per_objfile->abbrev.s.asection = sectp; |
dce234bc | 2096 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); |
c906108c | 2097 | } |
251d32d9 | 2098 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 2099 | { |
73869dc2 | 2100 | dwarf2_per_objfile->line.s.asection = sectp; |
dce234bc | 2101 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); |
c906108c | 2102 | } |
251d32d9 | 2103 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 2104 | { |
73869dc2 | 2105 | dwarf2_per_objfile->loc.s.asection = sectp; |
dce234bc | 2106 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); |
c906108c | 2107 | } |
251d32d9 | 2108 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 2109 | { |
73869dc2 | 2110 | dwarf2_per_objfile->macinfo.s.asection = sectp; |
dce234bc | 2111 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); |
c906108c | 2112 | } |
cf2c3c16 TT |
2113 | else if (section_is_p (sectp->name, &names->macro)) |
2114 | { | |
73869dc2 | 2115 | dwarf2_per_objfile->macro.s.asection = sectp; |
cf2c3c16 TT |
2116 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); |
2117 | } | |
251d32d9 | 2118 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 2119 | { |
73869dc2 | 2120 | dwarf2_per_objfile->str.s.asection = sectp; |
dce234bc | 2121 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); |
c906108c | 2122 | } |
3019eac3 DE |
2123 | else if (section_is_p (sectp->name, &names->addr)) |
2124 | { | |
73869dc2 | 2125 | dwarf2_per_objfile->addr.s.asection = sectp; |
3019eac3 DE |
2126 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); |
2127 | } | |
251d32d9 | 2128 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 2129 | { |
73869dc2 | 2130 | dwarf2_per_objfile->frame.s.asection = sectp; |
dce234bc | 2131 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2132 | } |
251d32d9 | 2133 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 2134 | { |
73869dc2 | 2135 | dwarf2_per_objfile->eh_frame.s.asection = sectp; |
dc7650b8 | 2136 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2137 | } |
251d32d9 | 2138 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 2139 | { |
73869dc2 | 2140 | dwarf2_per_objfile->ranges.s.asection = sectp; |
dce234bc | 2141 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); |
af34e669 | 2142 | } |
251d32d9 | 2143 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 2144 | { |
8b70b953 TT |
2145 | struct dwarf2_section_info type_section; |
2146 | ||
2147 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 2148 | type_section.s.asection = sectp; |
8b70b953 TT |
2149 | type_section.size = bfd_get_section_size (sectp); |
2150 | ||
2151 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
2152 | &type_section); | |
348e048f | 2153 | } |
251d32d9 | 2154 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd | 2155 | { |
73869dc2 | 2156 | dwarf2_per_objfile->gdb_index.s.asection = sectp; |
9291a0cd TT |
2157 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); |
2158 | } | |
dce234bc | 2159 | |
72dca2f5 FR |
2160 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
2161 | && bfd_section_vma (abfd, sectp) == 0) | |
2162 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
2163 | } |
2164 | ||
fceca515 DE |
2165 | /* A helper function that decides whether a section is empty, |
2166 | or not present. */ | |
9e0ac564 TT |
2167 | |
2168 | static int | |
19ac8c2e | 2169 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2170 | { |
73869dc2 DE |
2171 | if (section->is_virtual) |
2172 | return section->size == 0; | |
2173 | return section->s.asection == NULL || section->size == 0; | |
9e0ac564 TT |
2174 | } |
2175 | ||
3019eac3 DE |
2176 | /* Read the contents of the section INFO. |
2177 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2178 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2179 | of the DWO file. | |
dce234bc | 2180 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2181 | |
dce234bc PP |
2182 | static void |
2183 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2184 | { |
a32a8923 | 2185 | asection *sectp; |
3019eac3 | 2186 | bfd *abfd; |
dce234bc | 2187 | gdb_byte *buf, *retbuf; |
c906108c | 2188 | |
be391dca TT |
2189 | if (info->readin) |
2190 | return; | |
dce234bc | 2191 | info->buffer = NULL; |
be391dca | 2192 | info->readin = 1; |
188dd5d6 | 2193 | |
9e0ac564 | 2194 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2195 | return; |
c906108c | 2196 | |
a32a8923 | 2197 | sectp = get_section_bfd_section (info); |
3019eac3 | 2198 | |
73869dc2 DE |
2199 | /* If this is a virtual section we need to read in the real one first. */ |
2200 | if (info->is_virtual) | |
2201 | { | |
2202 | struct dwarf2_section_info *containing_section = | |
2203 | get_containing_section (info); | |
2204 | ||
2205 | gdb_assert (sectp != NULL); | |
2206 | if ((sectp->flags & SEC_RELOC) != 0) | |
2207 | { | |
2208 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2209 | " supported in section %s [in module %s]"), | |
2210 | get_section_name (info), get_section_file_name (info)); | |
2211 | } | |
2212 | dwarf2_read_section (objfile, containing_section); | |
2213 | /* Other code should have already caught virtual sections that don't | |
2214 | fit. */ | |
2215 | gdb_assert (info->virtual_offset + info->size | |
2216 | <= containing_section->size); | |
2217 | /* If the real section is empty or there was a problem reading the | |
2218 | section we shouldn't get here. */ | |
2219 | gdb_assert (containing_section->buffer != NULL); | |
2220 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2221 | return; | |
2222 | } | |
2223 | ||
4bf44c1c TT |
2224 | /* If the section has relocations, we must read it ourselves. |
2225 | Otherwise we attach it to the BFD. */ | |
2226 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2227 | { |
d521ce57 | 2228 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2229 | return; |
dce234bc | 2230 | } |
dce234bc | 2231 | |
4bf44c1c TT |
2232 | buf = obstack_alloc (&objfile->objfile_obstack, info->size); |
2233 | info->buffer = buf; | |
dce234bc PP |
2234 | |
2235 | /* When debugging .o files, we may need to apply relocations; see | |
2236 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2237 | We never compress sections in .o files, so we only need to | |
2238 | try this when the section is not compressed. */ | |
ac8035ab | 2239 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2240 | if (retbuf != NULL) |
2241 | { | |
2242 | info->buffer = retbuf; | |
2243 | return; | |
2244 | } | |
2245 | ||
a32a8923 DE |
2246 | abfd = get_section_bfd_owner (info); |
2247 | gdb_assert (abfd != NULL); | |
2248 | ||
dce234bc PP |
2249 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2250 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2251 | { |
2252 | error (_("Dwarf Error: Can't read DWARF data" | |
2253 | " in section %s [in module %s]"), | |
2254 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2255 | } | |
dce234bc PP |
2256 | } |
2257 | ||
9e0ac564 TT |
2258 | /* A helper function that returns the size of a section in a safe way. |
2259 | If you are positive that the section has been read before using the | |
2260 | size, then it is safe to refer to the dwarf2_section_info object's | |
2261 | "size" field directly. In other cases, you must call this | |
2262 | function, because for compressed sections the size field is not set | |
2263 | correctly until the section has been read. */ | |
2264 | ||
2265 | static bfd_size_type | |
2266 | dwarf2_section_size (struct objfile *objfile, | |
2267 | struct dwarf2_section_info *info) | |
2268 | { | |
2269 | if (!info->readin) | |
2270 | dwarf2_read_section (objfile, info); | |
2271 | return info->size; | |
2272 | } | |
2273 | ||
dce234bc | 2274 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2275 | SECTION_NAME. */ |
af34e669 | 2276 | |
dce234bc | 2277 | void |
3017a003 TG |
2278 | dwarf2_get_section_info (struct objfile *objfile, |
2279 | enum dwarf2_section_enum sect, | |
d521ce57 | 2280 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2281 | bfd_size_type *sizep) |
2282 | { | |
2283 | struct dwarf2_per_objfile *data | |
2284 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
2285 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
2286 | |
2287 | /* We may see an objfile without any DWARF, in which case we just | |
2288 | return nothing. */ | |
2289 | if (data == NULL) | |
2290 | { | |
2291 | *sectp = NULL; | |
2292 | *bufp = NULL; | |
2293 | *sizep = 0; | |
2294 | return; | |
2295 | } | |
3017a003 TG |
2296 | switch (sect) |
2297 | { | |
2298 | case DWARF2_DEBUG_FRAME: | |
2299 | info = &data->frame; | |
2300 | break; | |
2301 | case DWARF2_EH_FRAME: | |
2302 | info = &data->eh_frame; | |
2303 | break; | |
2304 | default: | |
2305 | gdb_assert_not_reached ("unexpected section"); | |
2306 | } | |
dce234bc | 2307 | |
9e0ac564 | 2308 | dwarf2_read_section (objfile, info); |
dce234bc | 2309 | |
a32a8923 | 2310 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2311 | *bufp = info->buffer; |
2312 | *sizep = info->size; | |
2313 | } | |
2314 | ||
36586728 TT |
2315 | /* A helper function to find the sections for a .dwz file. */ |
2316 | ||
2317 | static void | |
2318 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2319 | { | |
2320 | struct dwz_file *dwz_file = arg; | |
2321 | ||
2322 | /* Note that we only support the standard ELF names, because .dwz | |
2323 | is ELF-only (at the time of writing). */ | |
2324 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2325 | { | |
73869dc2 | 2326 | dwz_file->abbrev.s.asection = sectp; |
36586728 TT |
2327 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2328 | } | |
2329 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2330 | { | |
73869dc2 | 2331 | dwz_file->info.s.asection = sectp; |
36586728 TT |
2332 | dwz_file->info.size = bfd_get_section_size (sectp); |
2333 | } | |
2334 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2335 | { | |
73869dc2 | 2336 | dwz_file->str.s.asection = sectp; |
36586728 TT |
2337 | dwz_file->str.size = bfd_get_section_size (sectp); |
2338 | } | |
2339 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2340 | { | |
73869dc2 | 2341 | dwz_file->line.s.asection = sectp; |
36586728 TT |
2342 | dwz_file->line.size = bfd_get_section_size (sectp); |
2343 | } | |
2344 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2345 | { | |
73869dc2 | 2346 | dwz_file->macro.s.asection = sectp; |
36586728 TT |
2347 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2348 | } | |
2ec9a5e0 TT |
2349 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2350 | { | |
73869dc2 | 2351 | dwz_file->gdb_index.s.asection = sectp; |
2ec9a5e0 TT |
2352 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2353 | } | |
36586728 TT |
2354 | } |
2355 | ||
4db1a1dc TT |
2356 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2357 | there is no .gnu_debugaltlink section in the file. Error if there | |
2358 | is such a section but the file cannot be found. */ | |
36586728 TT |
2359 | |
2360 | static struct dwz_file * | |
2361 | dwarf2_get_dwz_file (void) | |
2362 | { | |
4db1a1dc TT |
2363 | bfd *dwz_bfd; |
2364 | char *data; | |
36586728 TT |
2365 | struct cleanup *cleanup; |
2366 | const char *filename; | |
2367 | struct dwz_file *result; | |
acd13123 | 2368 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2369 | size_t buildid_len; |
2370 | bfd_byte *buildid; | |
36586728 TT |
2371 | |
2372 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2373 | return dwarf2_per_objfile->dwz_file; | |
2374 | ||
4db1a1dc TT |
2375 | bfd_set_error (bfd_error_no_error); |
2376 | data = bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
acd13123 | 2377 | &buildid_len_arg, &buildid); |
4db1a1dc TT |
2378 | if (data == NULL) |
2379 | { | |
2380 | if (bfd_get_error () == bfd_error_no_error) | |
2381 | return NULL; | |
2382 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2383 | bfd_errmsg (bfd_get_error ())); | |
2384 | } | |
36586728 | 2385 | cleanup = make_cleanup (xfree, data); |
dc294be5 | 2386 | make_cleanup (xfree, buildid); |
36586728 | 2387 | |
acd13123 TT |
2388 | buildid_len = (size_t) buildid_len_arg; |
2389 | ||
f9d83a0b | 2390 | filename = (const char *) data; |
36586728 TT |
2391 | if (!IS_ABSOLUTE_PATH (filename)) |
2392 | { | |
4262abfb | 2393 | char *abs = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); |
36586728 TT |
2394 | char *rel; |
2395 | ||
2396 | make_cleanup (xfree, abs); | |
2397 | abs = ldirname (abs); | |
2398 | make_cleanup (xfree, abs); | |
2399 | ||
2400 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2401 | make_cleanup (xfree, rel); | |
2402 | filename = rel; | |
2403 | } | |
2404 | ||
dc294be5 TT |
2405 | /* First try the file name given in the section. If that doesn't |
2406 | work, try to use the build-id instead. */ | |
36586728 | 2407 | dwz_bfd = gdb_bfd_open (filename, gnutarget, -1); |
dc294be5 | 2408 | if (dwz_bfd != NULL) |
36586728 | 2409 | { |
dc294be5 TT |
2410 | if (!build_id_verify (dwz_bfd, buildid_len, buildid)) |
2411 | { | |
2412 | gdb_bfd_unref (dwz_bfd); | |
2413 | dwz_bfd = NULL; | |
2414 | } | |
36586728 TT |
2415 | } |
2416 | ||
dc294be5 TT |
2417 | if (dwz_bfd == NULL) |
2418 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2419 | ||
2420 | if (dwz_bfd == NULL) | |
2421 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2422 | objfile_name (dwarf2_per_objfile->objfile)); | |
2423 | ||
36586728 TT |
2424 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
2425 | struct dwz_file); | |
2426 | result->dwz_bfd = dwz_bfd; | |
2427 | ||
2428 | bfd_map_over_sections (dwz_bfd, locate_dwz_sections, result); | |
2429 | ||
2430 | do_cleanups (cleanup); | |
2431 | ||
8d2cc612 | 2432 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2433 | return result; |
2434 | } | |
9291a0cd | 2435 | \f |
7b9f3c50 DE |
2436 | /* DWARF quick_symbols_functions support. */ |
2437 | ||
2438 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2439 | unique line tables, so we maintain a separate table of all .debug_line | |
2440 | derived entries to support the sharing. | |
2441 | All the quick functions need is the list of file names. We discard the | |
2442 | line_header when we're done and don't need to record it here. */ | |
2443 | struct quick_file_names | |
2444 | { | |
094b34ac DE |
2445 | /* The data used to construct the hash key. */ |
2446 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2447 | |
2448 | /* The number of entries in file_names, real_names. */ | |
2449 | unsigned int num_file_names; | |
2450 | ||
2451 | /* The file names from the line table, after being run through | |
2452 | file_full_name. */ | |
2453 | const char **file_names; | |
2454 | ||
2455 | /* The file names from the line table after being run through | |
2456 | gdb_realpath. These are computed lazily. */ | |
2457 | const char **real_names; | |
2458 | }; | |
2459 | ||
2460 | /* When using the index (and thus not using psymtabs), each CU has an | |
2461 | object of this type. This is used to hold information needed by | |
2462 | the various "quick" methods. */ | |
2463 | struct dwarf2_per_cu_quick_data | |
2464 | { | |
2465 | /* The file table. This can be NULL if there was no file table | |
2466 | or it's currently not read in. | |
2467 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2468 | struct quick_file_names *file_names; | |
2469 | ||
2470 | /* The corresponding symbol table. This is NULL if symbols for this | |
2471 | CU have not yet been read. */ | |
2472 | struct symtab *symtab; | |
2473 | ||
2474 | /* A temporary mark bit used when iterating over all CUs in | |
2475 | expand_symtabs_matching. */ | |
2476 | unsigned int mark : 1; | |
2477 | ||
2478 | /* True if we've tried to read the file table and found there isn't one. | |
2479 | There will be no point in trying to read it again next time. */ | |
2480 | unsigned int no_file_data : 1; | |
2481 | }; | |
2482 | ||
094b34ac DE |
2483 | /* Utility hash function for a stmt_list_hash. */ |
2484 | ||
2485 | static hashval_t | |
2486 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2487 | { | |
2488 | hashval_t v = 0; | |
2489 | ||
2490 | if (stmt_list_hash->dwo_unit != NULL) | |
2491 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2492 | v += stmt_list_hash->line_offset.sect_off; | |
2493 | return v; | |
2494 | } | |
2495 | ||
2496 | /* Utility equality function for a stmt_list_hash. */ | |
2497 | ||
2498 | static int | |
2499 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2500 | const struct stmt_list_hash *rhs) | |
2501 | { | |
2502 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2503 | return 0; | |
2504 | if (lhs->dwo_unit != NULL | |
2505 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2506 | return 0; | |
2507 | ||
2508 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2509 | } | |
2510 | ||
7b9f3c50 DE |
2511 | /* Hash function for a quick_file_names. */ |
2512 | ||
2513 | static hashval_t | |
2514 | hash_file_name_entry (const void *e) | |
2515 | { | |
2516 | const struct quick_file_names *file_data = e; | |
2517 | ||
094b34ac | 2518 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2519 | } |
2520 | ||
2521 | /* Equality function for a quick_file_names. */ | |
2522 | ||
2523 | static int | |
2524 | eq_file_name_entry (const void *a, const void *b) | |
2525 | { | |
2526 | const struct quick_file_names *ea = a; | |
2527 | const struct quick_file_names *eb = b; | |
2528 | ||
094b34ac | 2529 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2530 | } |
2531 | ||
2532 | /* Delete function for a quick_file_names. */ | |
2533 | ||
2534 | static void | |
2535 | delete_file_name_entry (void *e) | |
2536 | { | |
2537 | struct quick_file_names *file_data = e; | |
2538 | int i; | |
2539 | ||
2540 | for (i = 0; i < file_data->num_file_names; ++i) | |
2541 | { | |
2542 | xfree ((void*) file_data->file_names[i]); | |
2543 | if (file_data->real_names) | |
2544 | xfree ((void*) file_data->real_names[i]); | |
2545 | } | |
2546 | ||
2547 | /* The space for the struct itself lives on objfile_obstack, | |
2548 | so we don't free it here. */ | |
2549 | } | |
2550 | ||
2551 | /* Create a quick_file_names hash table. */ | |
2552 | ||
2553 | static htab_t | |
2554 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2555 | { | |
2556 | return htab_create_alloc (nr_initial_entries, | |
2557 | hash_file_name_entry, eq_file_name_entry, | |
2558 | delete_file_name_entry, xcalloc, xfree); | |
2559 | } | |
9291a0cd | 2560 | |
918dd910 JK |
2561 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2562 | have to be created afterwards. You should call age_cached_comp_units after | |
2563 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2564 | ||
2565 | static void | |
2566 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2567 | { | |
3019eac3 | 2568 | if (per_cu->is_debug_types) |
e5fe5e75 | 2569 | load_full_type_unit (per_cu); |
918dd910 | 2570 | else |
95554aad | 2571 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2572 | |
918dd910 | 2573 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2574 | |
2575 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2576 | } |
2577 | ||
a0f42c21 | 2578 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2579 | |
9291a0cd | 2580 | static void |
a0f42c21 | 2581 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2582 | { |
2583 | struct cleanup *back_to; | |
2584 | ||
f4dc4d17 DE |
2585 | /* Skip type_unit_groups, reading the type units they contain |
2586 | is handled elsewhere. */ | |
2587 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2588 | return; | |
2589 | ||
9291a0cd TT |
2590 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2591 | ||
95554aad TT |
2592 | if (dwarf2_per_objfile->using_index |
2593 | ? per_cu->v.quick->symtab == NULL | |
2594 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
2595 | { | |
2596 | queue_comp_unit (per_cu, language_minimal); | |
2597 | load_cu (per_cu); | |
89e63ee4 DE |
2598 | |
2599 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2600 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2601 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2602 | if (!per_cu->is_debug_types | |
2603 | && per_cu->cu->dwo_unit != NULL | |
2604 | && dwarf2_per_objfile->index_table != NULL | |
2605 | && dwarf2_per_objfile->index_table->version <= 7 | |
2606 | /* DWP files aren't supported yet. */ | |
2607 | && get_dwp_file () == NULL) | |
2608 | queue_and_load_all_dwo_tus (per_cu); | |
95554aad | 2609 | } |
9291a0cd | 2610 | |
a0f42c21 | 2611 | process_queue (); |
9291a0cd TT |
2612 | |
2613 | /* Age the cache, releasing compilation units that have not | |
2614 | been used recently. */ | |
2615 | age_cached_comp_units (); | |
2616 | ||
2617 | do_cleanups (back_to); | |
2618 | } | |
2619 | ||
2620 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2621 | the objfile from which this CU came. Returns the resulting symbol | |
2622 | table. */ | |
2fdf6df6 | 2623 | |
9291a0cd | 2624 | static struct symtab * |
a0f42c21 | 2625 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2626 | { |
95554aad | 2627 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
2628 | if (!per_cu->v.quick->symtab) |
2629 | { | |
2630 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2631 | increment_reading_symtab (); | |
a0f42c21 | 2632 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2633 | process_cu_includes (); |
9291a0cd TT |
2634 | do_cleanups (back_to); |
2635 | } | |
2636 | return per_cu->v.quick->symtab; | |
2637 | } | |
2638 | ||
f4dc4d17 DE |
2639 | /* Return the CU given its index. |
2640 | ||
2641 | This is intended for loops like: | |
2642 | ||
2643 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2644 | + dwarf2_per_objfile->n_type_units); ++i) | |
2645 | { | |
2646 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2647 | ||
2648 | ...; | |
2649 | } | |
2650 | */ | |
2fdf6df6 | 2651 | |
1fd400ff TT |
2652 | static struct dwarf2_per_cu_data * |
2653 | dw2_get_cu (int index) | |
2654 | { | |
2655 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2656 | { | |
f4dc4d17 | 2657 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2658 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2659 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2660 | } |
2661 | ||
2662 | return dwarf2_per_objfile->all_comp_units[index]; | |
2663 | } | |
2664 | ||
2665 | /* Return the primary CU given its index. | |
2666 | The difference between this function and dw2_get_cu is in the handling | |
2667 | of type units (TUs). Here we return the type_unit_group object. | |
2668 | ||
2669 | This is intended for loops like: | |
2670 | ||
2671 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2672 | + dwarf2_per_objfile->n_type_unit_groups); ++i) | |
2673 | { | |
2674 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); | |
2675 | ||
2676 | ...; | |
2677 | } | |
2678 | */ | |
2679 | ||
2680 | static struct dwarf2_per_cu_data * | |
2681 | dw2_get_primary_cu (int index) | |
2682 | { | |
2683 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2684 | { | |
1fd400ff | 2685 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2686 | gdb_assert (index < dwarf2_per_objfile->n_type_unit_groups); |
2687 | return &dwarf2_per_objfile->all_type_unit_groups[index]->per_cu; | |
1fd400ff | 2688 | } |
f4dc4d17 | 2689 | |
1fd400ff TT |
2690 | return dwarf2_per_objfile->all_comp_units[index]; |
2691 | } | |
2692 | ||
2ec9a5e0 TT |
2693 | /* A helper for create_cus_from_index that handles a given list of |
2694 | CUs. */ | |
2fdf6df6 | 2695 | |
74a0d9f6 | 2696 | static void |
2ec9a5e0 TT |
2697 | create_cus_from_index_list (struct objfile *objfile, |
2698 | const gdb_byte *cu_list, offset_type n_elements, | |
2699 | struct dwarf2_section_info *section, | |
2700 | int is_dwz, | |
2701 | int base_offset) | |
9291a0cd TT |
2702 | { |
2703 | offset_type i; | |
9291a0cd | 2704 | |
2ec9a5e0 | 2705 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2706 | { |
2707 | struct dwarf2_per_cu_data *the_cu; | |
2708 | ULONGEST offset, length; | |
2709 | ||
74a0d9f6 JK |
2710 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2711 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2712 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2713 | cu_list += 2 * 8; |
2714 | ||
2715 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2716 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2717 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2718 | the_cu->length = length; |
2719 | the_cu->objfile = objfile; | |
8a0459fd | 2720 | the_cu->section = section; |
9291a0cd TT |
2721 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2722 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2723 | the_cu->is_dwz = is_dwz; |
2724 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2725 | } |
9291a0cd TT |
2726 | } |
2727 | ||
2ec9a5e0 | 2728 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2729 | the CU objects for this objfile. */ |
2ec9a5e0 | 2730 | |
74a0d9f6 | 2731 | static void |
2ec9a5e0 TT |
2732 | create_cus_from_index (struct objfile *objfile, |
2733 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2734 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2735 | { | |
2736 | struct dwz_file *dwz; | |
2737 | ||
2738 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
2739 | dwarf2_per_objfile->all_comp_units | |
2740 | = obstack_alloc (&objfile->objfile_obstack, | |
2741 | dwarf2_per_objfile->n_comp_units | |
2742 | * sizeof (struct dwarf2_per_cu_data *)); | |
2743 | ||
74a0d9f6 JK |
2744 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2745 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2746 | |
2747 | if (dwz_elements == 0) | |
74a0d9f6 | 2748 | return; |
2ec9a5e0 TT |
2749 | |
2750 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2751 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2752 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2753 | } |
2754 | ||
1fd400ff | 2755 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2756 | |
74a0d9f6 | 2757 | static void |
673bfd45 | 2758 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2759 | struct dwarf2_section_info *section, |
673bfd45 DE |
2760 | const gdb_byte *bytes, |
2761 | offset_type elements) | |
1fd400ff TT |
2762 | { |
2763 | offset_type i; | |
673bfd45 | 2764 | htab_t sig_types_hash; |
1fd400ff | 2765 | |
d467dd73 DE |
2766 | dwarf2_per_objfile->n_type_units = elements / 3; |
2767 | dwarf2_per_objfile->all_type_units | |
a2ce51a0 DE |
2768 | = xmalloc (dwarf2_per_objfile->n_type_units |
2769 | * sizeof (struct signatured_type *)); | |
1fd400ff | 2770 | |
673bfd45 | 2771 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2772 | |
2773 | for (i = 0; i < elements; i += 3) | |
2774 | { | |
52dc124a DE |
2775 | struct signatured_type *sig_type; |
2776 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2777 | void **slot; |
2778 | ||
74a0d9f6 JK |
2779 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2780 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2781 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2782 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2783 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2784 | bytes += 3 * 8; | |
2785 | ||
52dc124a | 2786 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2787 | struct signatured_type); |
52dc124a | 2788 | sig_type->signature = signature; |
3019eac3 DE |
2789 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2790 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 2791 | sig_type->per_cu.section = section; |
52dc124a DE |
2792 | sig_type->per_cu.offset.sect_off = offset; |
2793 | sig_type->per_cu.objfile = objfile; | |
2794 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2795 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2796 | struct dwarf2_per_cu_quick_data); | |
2797 | ||
52dc124a DE |
2798 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2799 | *slot = sig_type; | |
1fd400ff | 2800 | |
b4dd5633 | 2801 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2802 | } |
2803 | ||
673bfd45 | 2804 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2805 | } |
2806 | ||
9291a0cd TT |
2807 | /* Read the address map data from the mapped index, and use it to |
2808 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2809 | |
9291a0cd TT |
2810 | static void |
2811 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2812 | { | |
2813 | const gdb_byte *iter, *end; | |
2814 | struct obstack temp_obstack; | |
2815 | struct addrmap *mutable_map; | |
2816 | struct cleanup *cleanup; | |
2817 | CORE_ADDR baseaddr; | |
2818 | ||
2819 | obstack_init (&temp_obstack); | |
2820 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2821 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2822 | ||
2823 | iter = index->address_table; | |
2824 | end = iter + index->address_table_size; | |
2825 | ||
2826 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2827 | ||
2828 | while (iter < end) | |
2829 | { | |
2830 | ULONGEST hi, lo, cu_index; | |
2831 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2832 | iter += 8; | |
2833 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2834 | iter += 8; | |
2835 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2836 | iter += 4; | |
f652bce2 | 2837 | |
24a55014 | 2838 | if (lo > hi) |
f652bce2 | 2839 | { |
24a55014 DE |
2840 | complaint (&symfile_complaints, |
2841 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 2842 | hex_string (lo), hex_string (hi)); |
24a55014 | 2843 | continue; |
f652bce2 | 2844 | } |
24a55014 DE |
2845 | |
2846 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
2847 | { |
2848 | complaint (&symfile_complaints, | |
2849 | _(".gdb_index address table has invalid CU number %u"), | |
2850 | (unsigned) cu_index); | |
24a55014 | 2851 | continue; |
f652bce2 | 2852 | } |
24a55014 DE |
2853 | |
2854 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
2855 | dw2_get_cu (cu_index)); | |
9291a0cd TT |
2856 | } |
2857 | ||
2858 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2859 | &objfile->objfile_obstack); | |
2860 | do_cleanups (cleanup); | |
2861 | } | |
2862 | ||
59d7bcaf JK |
2863 | /* The hash function for strings in the mapped index. This is the same as |
2864 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2865 | implementation. This is necessary because the hash function is tied to the | |
2866 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2867 | SYMBOL_HASH_NEXT. |
2868 | ||
2869 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2870 | |
9291a0cd | 2871 | static hashval_t |
559a7a62 | 2872 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2873 | { |
2874 | const unsigned char *str = (const unsigned char *) p; | |
2875 | hashval_t r = 0; | |
2876 | unsigned char c; | |
2877 | ||
2878 | while ((c = *str++) != 0) | |
559a7a62 JK |
2879 | { |
2880 | if (index_version >= 5) | |
2881 | c = tolower (c); | |
2882 | r = r * 67 + c - 113; | |
2883 | } | |
9291a0cd TT |
2884 | |
2885 | return r; | |
2886 | } | |
2887 | ||
2888 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2889 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2890 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2891 | |
9291a0cd TT |
2892 | static int |
2893 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2894 | offset_type **vec_out) | |
2895 | { | |
0cf03b49 JK |
2896 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2897 | offset_type hash; | |
9291a0cd | 2898 | offset_type slot, step; |
559a7a62 | 2899 | int (*cmp) (const char *, const char *); |
9291a0cd | 2900 | |
0cf03b49 JK |
2901 | if (current_language->la_language == language_cplus |
2902 | || current_language->la_language == language_java | |
2903 | || current_language->la_language == language_fortran) | |
2904 | { | |
2905 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2906 | not contain any. */ | |
2907 | const char *paren = strchr (name, '('); | |
2908 | ||
2909 | if (paren) | |
2910 | { | |
2911 | char *dup; | |
2912 | ||
2913 | dup = xmalloc (paren - name + 1); | |
2914 | memcpy (dup, name, paren - name); | |
2915 | dup[paren - name] = 0; | |
2916 | ||
2917 | make_cleanup (xfree, dup); | |
2918 | name = dup; | |
2919 | } | |
2920 | } | |
2921 | ||
559a7a62 | 2922 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2923 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2924 | simulate our NAME being searched is also lowercased. */ |
2925 | hash = mapped_index_string_hash ((index->version == 4 | |
2926 | && case_sensitivity == case_sensitive_off | |
2927 | ? 5 : index->version), | |
2928 | name); | |
2929 | ||
3876f04e DE |
2930 | slot = hash & (index->symbol_table_slots - 1); |
2931 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2932 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2933 | |
2934 | for (;;) | |
2935 | { | |
2936 | /* Convert a slot number to an offset into the table. */ | |
2937 | offset_type i = 2 * slot; | |
2938 | const char *str; | |
3876f04e | 2939 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2940 | { |
2941 | do_cleanups (back_to); | |
2942 | return 0; | |
2943 | } | |
9291a0cd | 2944 | |
3876f04e | 2945 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2946 | if (!cmp (name, str)) |
9291a0cd TT |
2947 | { |
2948 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2949 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2950 | do_cleanups (back_to); |
9291a0cd TT |
2951 | return 1; |
2952 | } | |
2953 | ||
3876f04e | 2954 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2955 | } |
2956 | } | |
2957 | ||
2ec9a5e0 TT |
2958 | /* A helper function that reads the .gdb_index from SECTION and fills |
2959 | in MAP. FILENAME is the name of the file containing the section; | |
2960 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
2961 | ok to use deprecated sections. | |
2962 | ||
2963 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2964 | out parameters that are filled in with information about the CU and | |
2965 | TU lists in the section. | |
2966 | ||
2967 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 2968 | |
9291a0cd | 2969 | static int |
2ec9a5e0 TT |
2970 | read_index_from_section (struct objfile *objfile, |
2971 | const char *filename, | |
2972 | int deprecated_ok, | |
2973 | struct dwarf2_section_info *section, | |
2974 | struct mapped_index *map, | |
2975 | const gdb_byte **cu_list, | |
2976 | offset_type *cu_list_elements, | |
2977 | const gdb_byte **types_list, | |
2978 | offset_type *types_list_elements) | |
9291a0cd | 2979 | { |
948f8e3d | 2980 | const gdb_byte *addr; |
2ec9a5e0 | 2981 | offset_type version; |
b3b272e1 | 2982 | offset_type *metadata; |
1fd400ff | 2983 | int i; |
9291a0cd | 2984 | |
2ec9a5e0 | 2985 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 2986 | return 0; |
82430852 JK |
2987 | |
2988 | /* Older elfutils strip versions could keep the section in the main | |
2989 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 2990 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
2991 | return 0; |
2992 | ||
2ec9a5e0 | 2993 | dwarf2_read_section (objfile, section); |
9291a0cd | 2994 | |
2ec9a5e0 | 2995 | addr = section->buffer; |
9291a0cd | 2996 | /* Version check. */ |
1fd400ff | 2997 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2998 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2999 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3000 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3001 | indices. */ |
831adc1f | 3002 | if (version < 4) |
481860b3 GB |
3003 | { |
3004 | static int warning_printed = 0; | |
3005 | if (!warning_printed) | |
3006 | { | |
3007 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3008 | filename); |
481860b3 GB |
3009 | warning_printed = 1; |
3010 | } | |
3011 | return 0; | |
3012 | } | |
3013 | /* Index version 4 uses a different hash function than index version | |
3014 | 5 and later. | |
3015 | ||
3016 | Versions earlier than 6 did not emit psymbols for inlined | |
3017 | functions. Using these files will cause GDB not to be able to | |
3018 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3019 | indices unless the user has done |
3020 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3021 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3022 | { |
3023 | static int warning_printed = 0; | |
3024 | if (!warning_printed) | |
3025 | { | |
e615022a DE |
3026 | warning (_("\ |
3027 | Skipping deprecated .gdb_index section in %s.\n\ | |
3028 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3029 | to use the section anyway."), | |
2ec9a5e0 | 3030 | filename); |
481860b3 GB |
3031 | warning_printed = 1; |
3032 | } | |
3033 | return 0; | |
3034 | } | |
796a7ff8 DE |
3035 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
3036 | of the TU (for symbols coming from TUs). It's just a performance bug, and | |
3037 | we can't distinguish gdb-generated indices from gold-generated ones, so | |
3038 | nothing to do here. */ | |
3039 | ||
481860b3 | 3040 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3041 | longer backward compatible. */ |
796a7ff8 | 3042 | if (version > 8) |
594e8718 | 3043 | return 0; |
9291a0cd | 3044 | |
559a7a62 | 3045 | map->version = version; |
2ec9a5e0 | 3046 | map->total_size = section->size; |
9291a0cd TT |
3047 | |
3048 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3049 | |
3050 | i = 0; | |
2ec9a5e0 TT |
3051 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3052 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3053 | / 8); | |
1fd400ff TT |
3054 | ++i; |
3055 | ||
2ec9a5e0 TT |
3056 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3057 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3058 | - MAYBE_SWAP (metadata[i])) | |
3059 | / 8); | |
987d643c | 3060 | ++i; |
1fd400ff TT |
3061 | |
3062 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3063 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3064 | - MAYBE_SWAP (metadata[i])); | |
3065 | ++i; | |
3066 | ||
3876f04e DE |
3067 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3068 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3069 | - MAYBE_SWAP (metadata[i])) | |
3070 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3071 | ++i; |
9291a0cd | 3072 | |
f9d83a0b | 3073 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3074 | |
2ec9a5e0 TT |
3075 | return 1; |
3076 | } | |
3077 | ||
3078 | ||
3079 | /* Read the index file. If everything went ok, initialize the "quick" | |
3080 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
3081 | ||
3082 | static int | |
3083 | dwarf2_read_index (struct objfile *objfile) | |
3084 | { | |
3085 | struct mapped_index local_map, *map; | |
3086 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3087 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3088 | struct dwz_file *dwz; |
2ec9a5e0 | 3089 | |
4262abfb | 3090 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3091 | use_deprecated_index_sections, |
3092 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3093 | &cu_list, &cu_list_elements, | |
3094 | &types_list, &types_list_elements)) | |
3095 | return 0; | |
3096 | ||
0fefef59 | 3097 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3098 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3099 | return 0; |
3100 | ||
2ec9a5e0 TT |
3101 | /* If there is a .dwz file, read it so we can get its CU list as |
3102 | well. */ | |
4db1a1dc TT |
3103 | dwz = dwarf2_get_dwz_file (); |
3104 | if (dwz != NULL) | |
2ec9a5e0 | 3105 | { |
2ec9a5e0 TT |
3106 | struct mapped_index dwz_map; |
3107 | const gdb_byte *dwz_types_ignore; | |
3108 | offset_type dwz_types_elements_ignore; | |
3109 | ||
3110 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3111 | 1, | |
3112 | &dwz->gdb_index, &dwz_map, | |
3113 | &dwz_list, &dwz_list_elements, | |
3114 | &dwz_types_ignore, | |
3115 | &dwz_types_elements_ignore)) | |
3116 | { | |
3117 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3118 | bfd_get_filename (dwz->dwz_bfd)); | |
3119 | return 0; | |
3120 | } | |
3121 | } | |
3122 | ||
74a0d9f6 JK |
3123 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3124 | dwz_list_elements); | |
1fd400ff | 3125 | |
8b70b953 TT |
3126 | if (types_list_elements) |
3127 | { | |
3128 | struct dwarf2_section_info *section; | |
3129 | ||
3130 | /* We can only handle a single .debug_types when we have an | |
3131 | index. */ | |
3132 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3133 | return 0; | |
3134 | ||
3135 | section = VEC_index (dwarf2_section_info_def, | |
3136 | dwarf2_per_objfile->types, 0); | |
3137 | ||
74a0d9f6 JK |
3138 | create_signatured_type_table_from_index (objfile, section, types_list, |
3139 | types_list_elements); | |
8b70b953 | 3140 | } |
9291a0cd | 3141 | |
2ec9a5e0 TT |
3142 | create_addrmap_from_index (objfile, &local_map); |
3143 | ||
3144 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
3145 | *map = local_map; | |
9291a0cd TT |
3146 | |
3147 | dwarf2_per_objfile->index_table = map; | |
3148 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3149 | dwarf2_per_objfile->quick_file_names_table = |
3150 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3151 | |
3152 | return 1; | |
3153 | } | |
3154 | ||
3155 | /* A helper for the "quick" functions which sets the global | |
3156 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3157 | |
9291a0cd TT |
3158 | static void |
3159 | dw2_setup (struct objfile *objfile) | |
3160 | { | |
3161 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
3162 | gdb_assert (dwarf2_per_objfile); | |
3163 | } | |
3164 | ||
dee91e82 | 3165 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3166 | |
dee91e82 DE |
3167 | static void |
3168 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3169 | const gdb_byte *info_ptr, |
dee91e82 DE |
3170 | struct die_info *comp_unit_die, |
3171 | int has_children, | |
3172 | void *data) | |
9291a0cd | 3173 | { |
dee91e82 DE |
3174 | struct dwarf2_cu *cu = reader->cu; |
3175 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3176 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3177 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 3178 | struct line_header *lh; |
9291a0cd | 3179 | struct attribute *attr; |
dee91e82 | 3180 | int i; |
15d034d0 | 3181 | const char *name, *comp_dir; |
7b9f3c50 DE |
3182 | void **slot; |
3183 | struct quick_file_names *qfn; | |
3184 | unsigned int line_offset; | |
9291a0cd | 3185 | |
0186c6a7 DE |
3186 | gdb_assert (! this_cu->is_debug_types); |
3187 | ||
07261596 TT |
3188 | /* Our callers never want to match partial units -- instead they |
3189 | will match the enclosing full CU. */ | |
3190 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3191 | { | |
3192 | this_cu->v.quick->no_file_data = 1; | |
3193 | return; | |
3194 | } | |
3195 | ||
0186c6a7 | 3196 | lh_cu = this_cu; |
7b9f3c50 DE |
3197 | lh = NULL; |
3198 | slot = NULL; | |
3199 | line_offset = 0; | |
dee91e82 DE |
3200 | |
3201 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
3202 | if (attr) |
3203 | { | |
7b9f3c50 DE |
3204 | struct quick_file_names find_entry; |
3205 | ||
3206 | line_offset = DW_UNSND (attr); | |
3207 | ||
3208 | /* We may have already read in this line header (TU line header sharing). | |
3209 | If we have we're done. */ | |
094b34ac DE |
3210 | find_entry.hash.dwo_unit = cu->dwo_unit; |
3211 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3212 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3213 | &find_entry, INSERT); | |
3214 | if (*slot != NULL) | |
3215 | { | |
094b34ac | 3216 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 3217 | return; |
7b9f3c50 DE |
3218 | } |
3219 | ||
3019eac3 | 3220 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3221 | } |
3222 | if (lh == NULL) | |
3223 | { | |
094b34ac | 3224 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3225 | return; |
9291a0cd TT |
3226 | } |
3227 | ||
7b9f3c50 | 3228 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
3229 | qfn->hash.dwo_unit = cu->dwo_unit; |
3230 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3231 | gdb_assert (slot != NULL); |
3232 | *slot = qfn; | |
9291a0cd | 3233 | |
dee91e82 | 3234 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 3235 | |
7b9f3c50 DE |
3236 | qfn->num_file_names = lh->num_file_names; |
3237 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
3238 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 3239 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
3240 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
3241 | qfn->real_names = NULL; | |
9291a0cd | 3242 | |
7b9f3c50 | 3243 | free_line_header (lh); |
7b9f3c50 | 3244 | |
094b34ac | 3245 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3246 | } |
3247 | ||
3248 | /* A helper for the "quick" functions which attempts to read the line | |
3249 | table for THIS_CU. */ | |
3250 | ||
3251 | static struct quick_file_names * | |
e4a48d9d | 3252 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3253 | { |
0186c6a7 DE |
3254 | /* This should never be called for TUs. */ |
3255 | gdb_assert (! this_cu->is_debug_types); | |
3256 | /* Nor type unit groups. */ | |
3257 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3258 | |
dee91e82 DE |
3259 | if (this_cu->v.quick->file_names != NULL) |
3260 | return this_cu->v.quick->file_names; | |
3261 | /* If we know there is no line data, no point in looking again. */ | |
3262 | if (this_cu->v.quick->no_file_data) | |
3263 | return NULL; | |
3264 | ||
0186c6a7 | 3265 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3266 | |
3267 | if (this_cu->v.quick->no_file_data) | |
3268 | return NULL; | |
3269 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3270 | } |
3271 | ||
3272 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3273 | real path for a given file name from the line table. */ |
2fdf6df6 | 3274 | |
9291a0cd | 3275 | static const char * |
7b9f3c50 DE |
3276 | dw2_get_real_path (struct objfile *objfile, |
3277 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3278 | { |
7b9f3c50 DE |
3279 | if (qfn->real_names == NULL) |
3280 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
3281 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 3282 | |
7b9f3c50 DE |
3283 | if (qfn->real_names[index] == NULL) |
3284 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 3285 | |
7b9f3c50 | 3286 | return qfn->real_names[index]; |
9291a0cd TT |
3287 | } |
3288 | ||
3289 | static struct symtab * | |
3290 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3291 | { | |
3292 | int index; | |
ae2de4f8 | 3293 | |
9291a0cd TT |
3294 | dw2_setup (objfile); |
3295 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 3296 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
3297 | } |
3298 | ||
7b9f3c50 DE |
3299 | /* Traversal function for dw2_forget_cached_source_info. */ |
3300 | ||
3301 | static int | |
3302 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3303 | { |
7b9f3c50 | 3304 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3305 | |
7b9f3c50 | 3306 | if (file_data->real_names) |
9291a0cd | 3307 | { |
7b9f3c50 | 3308 | int i; |
9291a0cd | 3309 | |
7b9f3c50 | 3310 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3311 | { |
7b9f3c50 DE |
3312 | xfree ((void*) file_data->real_names[i]); |
3313 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3314 | } |
3315 | } | |
7b9f3c50 DE |
3316 | |
3317 | return 1; | |
3318 | } | |
3319 | ||
3320 | static void | |
3321 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3322 | { | |
3323 | dw2_setup (objfile); | |
3324 | ||
3325 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3326 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3327 | } |
3328 | ||
f8eba3c6 TT |
3329 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3330 | the symtabs and calls the iterator. */ | |
3331 | ||
3332 | static int | |
3333 | dw2_map_expand_apply (struct objfile *objfile, | |
3334 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3335 | const char *name, const char *real_path, |
f8eba3c6 TT |
3336 | int (*callback) (struct symtab *, void *), |
3337 | void *data) | |
3338 | { | |
3339 | struct symtab *last_made = objfile->symtabs; | |
3340 | ||
3341 | /* Don't visit already-expanded CUs. */ | |
3342 | if (per_cu->v.quick->symtab) | |
3343 | return 0; | |
3344 | ||
3345 | /* This may expand more than one symtab, and we want to iterate over | |
3346 | all of them. */ | |
a0f42c21 | 3347 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3348 | |
f5b95b50 | 3349 | return iterate_over_some_symtabs (name, real_path, callback, data, |
f8eba3c6 TT |
3350 | objfile->symtabs, last_made); |
3351 | } | |
3352 | ||
3353 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3354 | ||
9291a0cd | 3355 | static int |
f8eba3c6 | 3356 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3357 | const char *real_path, |
f8eba3c6 TT |
3358 | int (*callback) (struct symtab *, void *), |
3359 | void *data) | |
9291a0cd TT |
3360 | { |
3361 | int i; | |
c011a4f4 | 3362 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3363 | |
3364 | dw2_setup (objfile); | |
ae2de4f8 | 3365 | |
848e3e78 DE |
3366 | /* The rule is CUs specify all the files, including those used by |
3367 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3368 | |
848e3e78 | 3369 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3370 | { |
3371 | int j; | |
f4dc4d17 | 3372 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3373 | struct quick_file_names *file_data; |
9291a0cd | 3374 | |
3d7bb9d9 | 3375 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3376 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3377 | continue; |
3378 | ||
e4a48d9d | 3379 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3380 | if (file_data == NULL) |
9291a0cd TT |
3381 | continue; |
3382 | ||
7b9f3c50 | 3383 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3384 | { |
7b9f3c50 | 3385 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3386 | const char *this_real_name; |
9291a0cd | 3387 | |
af529f8f | 3388 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3389 | { |
f5b95b50 | 3390 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3391 | callback, data)) |
3392 | return 1; | |
288e77a7 | 3393 | continue; |
4aac40c8 | 3394 | } |
9291a0cd | 3395 | |
c011a4f4 DE |
3396 | /* Before we invoke realpath, which can get expensive when many |
3397 | files are involved, do a quick comparison of the basenames. */ | |
3398 | if (! basenames_may_differ | |
3399 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3400 | continue; | |
3401 | ||
da235a7c JK |
3402 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3403 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3404 | { |
da235a7c JK |
3405 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3406 | callback, data)) | |
3407 | return 1; | |
288e77a7 | 3408 | continue; |
da235a7c | 3409 | } |
9291a0cd | 3410 | |
da235a7c JK |
3411 | if (real_path != NULL) |
3412 | { | |
af529f8f JK |
3413 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3414 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3415 | if (this_real_name != NULL |
af529f8f | 3416 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3417 | { |
f5b95b50 | 3418 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3419 | callback, data)) |
3420 | return 1; | |
288e77a7 | 3421 | continue; |
9291a0cd TT |
3422 | } |
3423 | } | |
3424 | } | |
3425 | } | |
3426 | ||
9291a0cd TT |
3427 | return 0; |
3428 | } | |
3429 | ||
da51c347 DE |
3430 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3431 | ||
3432 | struct dw2_symtab_iterator | |
9291a0cd | 3433 | { |
da51c347 DE |
3434 | /* The internalized form of .gdb_index. */ |
3435 | struct mapped_index *index; | |
3436 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3437 | int want_specific_block; | |
3438 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3439 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3440 | int block_index; | |
3441 | /* The kind of symbol we're looking for. */ | |
3442 | domain_enum domain; | |
3443 | /* The list of CUs from the index entry of the symbol, | |
3444 | or NULL if not found. */ | |
3445 | offset_type *vec; | |
3446 | /* The next element in VEC to look at. */ | |
3447 | int next; | |
3448 | /* The number of elements in VEC, or zero if there is no match. */ | |
3449 | int length; | |
3450 | }; | |
9291a0cd | 3451 | |
da51c347 DE |
3452 | /* Initialize the index symtab iterator ITER. |
3453 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3454 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3455 | |
9291a0cd | 3456 | static void |
da51c347 DE |
3457 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3458 | struct mapped_index *index, | |
3459 | int want_specific_block, | |
3460 | int block_index, | |
3461 | domain_enum domain, | |
3462 | const char *name) | |
3463 | { | |
3464 | iter->index = index; | |
3465 | iter->want_specific_block = want_specific_block; | |
3466 | iter->block_index = block_index; | |
3467 | iter->domain = domain; | |
3468 | iter->next = 0; | |
3469 | ||
3470 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3471 | iter->length = MAYBE_SWAP (*iter->vec); | |
3472 | else | |
3473 | { | |
3474 | iter->vec = NULL; | |
3475 | iter->length = 0; | |
3476 | } | |
3477 | } | |
3478 | ||
3479 | /* Return the next matching CU or NULL if there are no more. */ | |
3480 | ||
3481 | static struct dwarf2_per_cu_data * | |
3482 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3483 | { | |
3484 | for ( ; iter->next < iter->length; ++iter->next) | |
3485 | { | |
3486 | offset_type cu_index_and_attrs = | |
3487 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3488 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 3489 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
3490 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3491 | /* This value is only valid for index versions >= 7. */ | |
3492 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3493 | gdb_index_symbol_kind symbol_kind = | |
3494 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3495 | /* Only check the symbol attributes if they're present. | |
3496 | Indices prior to version 7 don't record them, | |
3497 | and indices >= 7 may elide them for certain symbols | |
3498 | (gold does this). */ | |
3499 | int attrs_valid = | |
3500 | (iter->index->version >= 7 | |
3501 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3502 | ||
3190f0c6 DE |
3503 | /* Don't crash on bad data. */ |
3504 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3505 | + dwarf2_per_objfile->n_type_units)) | |
3506 | { | |
3507 | complaint (&symfile_complaints, | |
3508 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3509 | " [in module %s]"), |
3510 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3511 | continue; |
3512 | } | |
3513 | ||
3514 | per_cu = dw2_get_cu (cu_index); | |
3515 | ||
da51c347 DE |
3516 | /* Skip if already read in. */ |
3517 | if (per_cu->v.quick->symtab) | |
3518 | continue; | |
3519 | ||
3520 | if (attrs_valid | |
3521 | && iter->want_specific_block | |
3522 | && want_static != is_static) | |
3523 | continue; | |
3524 | ||
3525 | /* Only check the symbol's kind if it has one. */ | |
3526 | if (attrs_valid) | |
3527 | { | |
3528 | switch (iter->domain) | |
3529 | { | |
3530 | case VAR_DOMAIN: | |
3531 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3532 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3533 | /* Some types are also in VAR_DOMAIN. */ | |
3534 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3535 | continue; | |
3536 | break; | |
3537 | case STRUCT_DOMAIN: | |
3538 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3539 | continue; | |
3540 | break; | |
3541 | case LABEL_DOMAIN: | |
3542 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3543 | continue; | |
3544 | break; | |
3545 | default: | |
3546 | break; | |
3547 | } | |
3548 | } | |
3549 | ||
3550 | ++iter->next; | |
3551 | return per_cu; | |
3552 | } | |
3553 | ||
3554 | return NULL; | |
3555 | } | |
3556 | ||
3557 | static struct symtab * | |
3558 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
3559 | const char *name, domain_enum domain) | |
9291a0cd | 3560 | { |
da51c347 | 3561 | struct symtab *stab_best = NULL; |
156942c7 DE |
3562 | struct mapped_index *index; |
3563 | ||
9291a0cd TT |
3564 | dw2_setup (objfile); |
3565 | ||
156942c7 DE |
3566 | index = dwarf2_per_objfile->index_table; |
3567 | ||
da51c347 | 3568 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3569 | if (index) |
9291a0cd | 3570 | { |
da51c347 DE |
3571 | struct dw2_symtab_iterator iter; |
3572 | struct dwarf2_per_cu_data *per_cu; | |
3573 | ||
3574 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3575 | |
da51c347 | 3576 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3577 | { |
da51c347 DE |
3578 | struct symbol *sym = NULL; |
3579 | struct symtab *stab = dw2_instantiate_symtab (per_cu); | |
3580 | ||
3581 | /* Some caution must be observed with overloaded functions | |
3582 | and methods, since the index will not contain any overload | |
3583 | information (but NAME might contain it). */ | |
3584 | if (stab->primary) | |
9291a0cd | 3585 | { |
da51c347 DE |
3586 | struct blockvector *bv = BLOCKVECTOR (stab); |
3587 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
156942c7 | 3588 | |
da51c347 DE |
3589 | sym = lookup_block_symbol (block, name, domain); |
3590 | } | |
1fd400ff | 3591 | |
da51c347 DE |
3592 | if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) |
3593 | { | |
3594 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
3595 | return stab; | |
3596 | ||
3597 | stab_best = stab; | |
9291a0cd | 3598 | } |
da51c347 DE |
3599 | |
3600 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3601 | } |
3602 | } | |
9291a0cd | 3603 | |
da51c347 | 3604 | return stab_best; |
9291a0cd TT |
3605 | } |
3606 | ||
3607 | static void | |
3608 | dw2_print_stats (struct objfile *objfile) | |
3609 | { | |
e4a48d9d | 3610 | int i, total, count; |
9291a0cd TT |
3611 | |
3612 | dw2_setup (objfile); | |
e4a48d9d | 3613 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3614 | count = 0; |
e4a48d9d | 3615 | for (i = 0; i < total; ++i) |
9291a0cd | 3616 | { |
e254ef6a | 3617 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3618 | |
e254ef6a | 3619 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
3620 | ++count; |
3621 | } | |
e4a48d9d | 3622 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3623 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3624 | } | |
3625 | ||
779bd270 DE |
3626 | /* This dumps minimal information about the index. |
3627 | It is called via "mt print objfiles". | |
3628 | One use is to verify .gdb_index has been loaded by the | |
3629 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3630 | ||
9291a0cd TT |
3631 | static void |
3632 | dw2_dump (struct objfile *objfile) | |
3633 | { | |
779bd270 DE |
3634 | dw2_setup (objfile); |
3635 | gdb_assert (dwarf2_per_objfile->using_index); | |
3636 | printf_filtered (".gdb_index:"); | |
3637 | if (dwarf2_per_objfile->index_table != NULL) | |
3638 | { | |
3639 | printf_filtered (" version %d\n", | |
3640 | dwarf2_per_objfile->index_table->version); | |
3641 | } | |
3642 | else | |
3643 | printf_filtered (" faked for \"readnow\"\n"); | |
3644 | printf_filtered ("\n"); | |
9291a0cd TT |
3645 | } |
3646 | ||
3647 | static void | |
3189cb12 DE |
3648 | dw2_relocate (struct objfile *objfile, |
3649 | const struct section_offsets *new_offsets, | |
3650 | const struct section_offsets *delta) | |
9291a0cd TT |
3651 | { |
3652 | /* There's nothing to relocate here. */ | |
3653 | } | |
3654 | ||
3655 | static void | |
3656 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3657 | const char *func_name) | |
3658 | { | |
da51c347 DE |
3659 | struct mapped_index *index; |
3660 | ||
3661 | dw2_setup (objfile); | |
3662 | ||
3663 | index = dwarf2_per_objfile->index_table; | |
3664 | ||
3665 | /* index is NULL if OBJF_READNOW. */ | |
3666 | if (index) | |
3667 | { | |
3668 | struct dw2_symtab_iterator iter; | |
3669 | struct dwarf2_per_cu_data *per_cu; | |
3670 | ||
3671 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3672 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3673 | func_name); | |
3674 | ||
3675 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3676 | dw2_instantiate_symtab (per_cu); | |
3677 | } | |
9291a0cd TT |
3678 | } |
3679 | ||
3680 | static void | |
3681 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3682 | { | |
3683 | int i; | |
3684 | ||
3685 | dw2_setup (objfile); | |
1fd400ff TT |
3686 | |
3687 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3688 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3689 | { |
e254ef6a | 3690 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3691 | |
a0f42c21 | 3692 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3693 | } |
3694 | } | |
3695 | ||
3696 | static void | |
652a8996 JK |
3697 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3698 | const char *fullname) | |
9291a0cd TT |
3699 | { |
3700 | int i; | |
3701 | ||
3702 | dw2_setup (objfile); | |
d4637a04 DE |
3703 | |
3704 | /* We don't need to consider type units here. | |
3705 | This is only called for examining code, e.g. expand_line_sal. | |
3706 | There can be an order of magnitude (or more) more type units | |
3707 | than comp units, and we avoid them if we can. */ | |
3708 | ||
3709 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3710 | { |
3711 | int j; | |
e254ef6a | 3712 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3713 | struct quick_file_names *file_data; |
9291a0cd | 3714 | |
3d7bb9d9 | 3715 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3716 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3717 | continue; |
3718 | ||
e4a48d9d | 3719 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3720 | if (file_data == NULL) |
9291a0cd TT |
3721 | continue; |
3722 | ||
7b9f3c50 | 3723 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3724 | { |
652a8996 JK |
3725 | const char *this_fullname = file_data->file_names[j]; |
3726 | ||
3727 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3728 | { |
a0f42c21 | 3729 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3730 | break; |
3731 | } | |
3732 | } | |
3733 | } | |
3734 | } | |
3735 | ||
9291a0cd | 3736 | static void |
ade7ed9e DE |
3737 | dw2_map_matching_symbols (struct objfile *objfile, |
3738 | const char * name, domain_enum namespace, | |
3739 | int global, | |
40658b94 PH |
3740 | int (*callback) (struct block *, |
3741 | struct symbol *, void *), | |
2edb89d3 JK |
3742 | void *data, symbol_compare_ftype *match, |
3743 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3744 | { |
40658b94 | 3745 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3746 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3747 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3748 | } |
3749 | ||
3750 | static void | |
f8eba3c6 TT |
3751 | dw2_expand_symtabs_matching |
3752 | (struct objfile *objfile, | |
fbd9ab74 | 3753 | int (*file_matcher) (const char *, void *, int basenames), |
e078317b | 3754 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
3755 | enum search_domain kind, |
3756 | void *data) | |
9291a0cd TT |
3757 | { |
3758 | int i; | |
3759 | offset_type iter; | |
4b5246aa | 3760 | struct mapped_index *index; |
9291a0cd TT |
3761 | |
3762 | dw2_setup (objfile); | |
ae2de4f8 DE |
3763 | |
3764 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3765 | if (!dwarf2_per_objfile->index_table) |
3766 | return; | |
4b5246aa | 3767 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3768 | |
7b08b9eb | 3769 | if (file_matcher != NULL) |
24c79950 TT |
3770 | { |
3771 | struct cleanup *cleanup; | |
3772 | htab_t visited_found, visited_not_found; | |
3773 | ||
3774 | visited_found = htab_create_alloc (10, | |
3775 | htab_hash_pointer, htab_eq_pointer, | |
3776 | NULL, xcalloc, xfree); | |
3777 | cleanup = make_cleanup_htab_delete (visited_found); | |
3778 | visited_not_found = htab_create_alloc (10, | |
3779 | htab_hash_pointer, htab_eq_pointer, | |
3780 | NULL, xcalloc, xfree); | |
3781 | make_cleanup_htab_delete (visited_not_found); | |
3782 | ||
848e3e78 DE |
3783 | /* The rule is CUs specify all the files, including those used by |
3784 | any TU, so there's no need to scan TUs here. */ | |
3785 | ||
3786 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3787 | { |
3788 | int j; | |
f4dc4d17 | 3789 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
24c79950 TT |
3790 | struct quick_file_names *file_data; |
3791 | void **slot; | |
7b08b9eb | 3792 | |
24c79950 | 3793 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3794 | |
24c79950 TT |
3795 | /* We only need to look at symtabs not already expanded. */ |
3796 | if (per_cu->v.quick->symtab) | |
3797 | continue; | |
7b08b9eb | 3798 | |
e4a48d9d | 3799 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3800 | if (file_data == NULL) |
3801 | continue; | |
7b08b9eb | 3802 | |
24c79950 TT |
3803 | if (htab_find (visited_not_found, file_data) != NULL) |
3804 | continue; | |
3805 | else if (htab_find (visited_found, file_data) != NULL) | |
3806 | { | |
3807 | per_cu->v.quick->mark = 1; | |
3808 | continue; | |
3809 | } | |
3810 | ||
3811 | for (j = 0; j < file_data->num_file_names; ++j) | |
3812 | { | |
da235a7c JK |
3813 | const char *this_real_name; |
3814 | ||
fbd9ab74 | 3815 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3816 | { |
3817 | per_cu->v.quick->mark = 1; | |
3818 | break; | |
3819 | } | |
da235a7c JK |
3820 | |
3821 | /* Before we invoke realpath, which can get expensive when many | |
3822 | files are involved, do a quick comparison of the basenames. */ | |
3823 | if (!basenames_may_differ | |
3824 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3825 | data, 1)) | |
3826 | continue; | |
3827 | ||
3828 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3829 | if (file_matcher (this_real_name, data, 0)) | |
3830 | { | |
3831 | per_cu->v.quick->mark = 1; | |
3832 | break; | |
3833 | } | |
24c79950 TT |
3834 | } |
3835 | ||
3836 | slot = htab_find_slot (per_cu->v.quick->mark | |
3837 | ? visited_found | |
3838 | : visited_not_found, | |
3839 | file_data, INSERT); | |
3840 | *slot = file_data; | |
3841 | } | |
3842 | ||
3843 | do_cleanups (cleanup); | |
3844 | } | |
9291a0cd | 3845 | |
3876f04e | 3846 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3847 | { |
3848 | offset_type idx = 2 * iter; | |
3849 | const char *name; | |
3850 | offset_type *vec, vec_len, vec_idx; | |
3851 | ||
3876f04e | 3852 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3853 | continue; |
3854 | ||
3876f04e | 3855 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3856 | |
e078317b | 3857 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
3858 | continue; |
3859 | ||
3860 | /* The name was matched, now expand corresponding CUs that were | |
3861 | marked. */ | |
4b5246aa | 3862 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3863 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3864 | vec_len = MAYBE_SWAP (vec[0]); |
3865 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3866 | { | |
e254ef6a | 3867 | struct dwarf2_per_cu_data *per_cu; |
156942c7 DE |
3868 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
3869 | gdb_index_symbol_kind symbol_kind = | |
3870 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3871 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 DE |
3872 | /* Only check the symbol attributes if they're present. |
3873 | Indices prior to version 7 don't record them, | |
3874 | and indices >= 7 may elide them for certain symbols | |
3875 | (gold does this). */ | |
3876 | int attrs_valid = | |
3877 | (index->version >= 7 | |
3878 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3879 | ||
3880 | /* Only check the symbol's kind if it has one. */ | |
3881 | if (attrs_valid) | |
156942c7 DE |
3882 | { |
3883 | switch (kind) | |
3884 | { | |
3885 | case VARIABLES_DOMAIN: | |
3886 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3887 | continue; | |
3888 | break; | |
3889 | case FUNCTIONS_DOMAIN: | |
3890 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3891 | continue; | |
3892 | break; | |
3893 | case TYPES_DOMAIN: | |
3894 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3895 | continue; | |
3896 | break; | |
3897 | default: | |
3898 | break; | |
3899 | } | |
3900 | } | |
3901 | ||
3190f0c6 DE |
3902 | /* Don't crash on bad data. */ |
3903 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3904 | + dwarf2_per_objfile->n_type_units)) | |
3905 | { | |
3906 | complaint (&symfile_complaints, | |
3907 | _(".gdb_index entry has bad CU index" | |
4262abfb | 3908 | " [in module %s]"), objfile_name (objfile)); |
3190f0c6 DE |
3909 | continue; |
3910 | } | |
3911 | ||
156942c7 | 3912 | per_cu = dw2_get_cu (cu_index); |
7b08b9eb | 3913 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 3914 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3915 | } |
3916 | } | |
3917 | } | |
3918 | ||
9703b513 TT |
3919 | /* A helper for dw2_find_pc_sect_symtab which finds the most specific |
3920 | symtab. */ | |
3921 | ||
3922 | static struct symtab * | |
3923 | recursively_find_pc_sect_symtab (struct symtab *symtab, CORE_ADDR pc) | |
3924 | { | |
3925 | int i; | |
3926 | ||
3927 | if (BLOCKVECTOR (symtab) != NULL | |
3928 | && blockvector_contains_pc (BLOCKVECTOR (symtab), pc)) | |
3929 | return symtab; | |
3930 | ||
a3ec0bb1 DE |
3931 | if (symtab->includes == NULL) |
3932 | return NULL; | |
3933 | ||
9703b513 TT |
3934 | for (i = 0; symtab->includes[i]; ++i) |
3935 | { | |
a3ec0bb1 | 3936 | struct symtab *s = symtab->includes[i]; |
9703b513 TT |
3937 | |
3938 | s = recursively_find_pc_sect_symtab (s, pc); | |
3939 | if (s != NULL) | |
3940 | return s; | |
3941 | } | |
3942 | ||
3943 | return NULL; | |
3944 | } | |
3945 | ||
9291a0cd TT |
3946 | static struct symtab * |
3947 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
3948 | struct minimal_symbol *msymbol, | |
3949 | CORE_ADDR pc, | |
3950 | struct obj_section *section, | |
3951 | int warn_if_readin) | |
3952 | { | |
3953 | struct dwarf2_per_cu_data *data; | |
9703b513 | 3954 | struct symtab *result; |
9291a0cd TT |
3955 | |
3956 | dw2_setup (objfile); | |
3957 | ||
3958 | if (!objfile->psymtabs_addrmap) | |
3959 | return NULL; | |
3960 | ||
3961 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3962 | if (!data) | |
3963 | return NULL; | |
3964 | ||
3965 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3966 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3967 | paddress (get_objfile_arch (objfile), pc)); |
3968 | ||
9703b513 TT |
3969 | result = recursively_find_pc_sect_symtab (dw2_instantiate_symtab (data), pc); |
3970 | gdb_assert (result != NULL); | |
3971 | return result; | |
9291a0cd TT |
3972 | } |
3973 | ||
9291a0cd | 3974 | static void |
44b13c5a | 3975 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 3976 | void *data, int need_fullname) |
9291a0cd TT |
3977 | { |
3978 | int i; | |
24c79950 TT |
3979 | struct cleanup *cleanup; |
3980 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
3981 | NULL, xcalloc, xfree); | |
9291a0cd | 3982 | |
24c79950 | 3983 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 3984 | dw2_setup (objfile); |
ae2de4f8 | 3985 | |
848e3e78 DE |
3986 | /* The rule is CUs specify all the files, including those used by |
3987 | any TU, so there's no need to scan TUs here. | |
3988 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 3989 | |
848e3e78 | 3990 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 TT |
3991 | { |
3992 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3993 | ||
3994 | if (per_cu->v.quick->symtab) | |
3995 | { | |
3996 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3997 | INSERT); | |
3998 | ||
3999 | *slot = per_cu->v.quick->file_names; | |
4000 | } | |
4001 | } | |
4002 | ||
848e3e78 | 4003 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4004 | { |
4005 | int j; | |
f4dc4d17 | 4006 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 4007 | struct quick_file_names *file_data; |
24c79950 | 4008 | void **slot; |
9291a0cd | 4009 | |
3d7bb9d9 | 4010 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 4011 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
4012 | continue; |
4013 | ||
e4a48d9d | 4014 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4015 | if (file_data == NULL) |
9291a0cd TT |
4016 | continue; |
4017 | ||
24c79950 TT |
4018 | slot = htab_find_slot (visited, file_data, INSERT); |
4019 | if (*slot) | |
4020 | { | |
4021 | /* Already visited. */ | |
4022 | continue; | |
4023 | } | |
4024 | *slot = file_data; | |
4025 | ||
7b9f3c50 | 4026 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4027 | { |
74e2f255 DE |
4028 | const char *this_real_name; |
4029 | ||
4030 | if (need_fullname) | |
4031 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4032 | else | |
4033 | this_real_name = NULL; | |
7b9f3c50 | 4034 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
4035 | } |
4036 | } | |
24c79950 TT |
4037 | |
4038 | do_cleanups (cleanup); | |
9291a0cd TT |
4039 | } |
4040 | ||
4041 | static int | |
4042 | dw2_has_symbols (struct objfile *objfile) | |
4043 | { | |
4044 | return 1; | |
4045 | } | |
4046 | ||
4047 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4048 | { | |
4049 | dw2_has_symbols, | |
4050 | dw2_find_last_source_symtab, | |
4051 | dw2_forget_cached_source_info, | |
f8eba3c6 | 4052 | dw2_map_symtabs_matching_filename, |
9291a0cd | 4053 | dw2_lookup_symbol, |
9291a0cd TT |
4054 | dw2_print_stats, |
4055 | dw2_dump, | |
4056 | dw2_relocate, | |
4057 | dw2_expand_symtabs_for_function, | |
4058 | dw2_expand_all_symtabs, | |
652a8996 | 4059 | dw2_expand_symtabs_with_fullname, |
40658b94 | 4060 | dw2_map_matching_symbols, |
9291a0cd TT |
4061 | dw2_expand_symtabs_matching, |
4062 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
4063 | dw2_map_symbol_filenames |
4064 | }; | |
4065 | ||
4066 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
4067 | file will use psymtabs, or 1 if using the GNU index. */ | |
4068 | ||
4069 | int | |
4070 | dwarf2_initialize_objfile (struct objfile *objfile) | |
4071 | { | |
4072 | /* If we're about to read full symbols, don't bother with the | |
4073 | indices. In this case we also don't care if some other debug | |
4074 | format is making psymtabs, because they are all about to be | |
4075 | expanded anyway. */ | |
4076 | if ((objfile->flags & OBJF_READNOW)) | |
4077 | { | |
4078 | int i; | |
4079 | ||
4080 | dwarf2_per_objfile->using_index = 1; | |
4081 | create_all_comp_units (objfile); | |
0e50663e | 4082 | create_all_type_units (objfile); |
7b9f3c50 DE |
4083 | dwarf2_per_objfile->quick_file_names_table = |
4084 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 4085 | |
1fd400ff | 4086 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 4087 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4088 | { |
e254ef6a | 4089 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 4090 | |
e254ef6a DE |
4091 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
4092 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
4093 | } |
4094 | ||
4095 | /* Return 1 so that gdb sees the "quick" functions. However, | |
4096 | these functions will be no-ops because we will have expanded | |
4097 | all symtabs. */ | |
4098 | return 1; | |
4099 | } | |
4100 | ||
4101 | if (dwarf2_read_index (objfile)) | |
4102 | return 1; | |
4103 | ||
9291a0cd TT |
4104 | return 0; |
4105 | } | |
4106 | ||
4107 | \f | |
4108 | ||
dce234bc PP |
4109 | /* Build a partial symbol table. */ |
4110 | ||
4111 | void | |
f29dff0a | 4112 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 4113 | { |
c9bf0622 TT |
4114 | volatile struct gdb_exception except; |
4115 | ||
f29dff0a | 4116 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
4117 | { |
4118 | init_psymbol_list (objfile, 1024); | |
4119 | } | |
4120 | ||
c9bf0622 TT |
4121 | TRY_CATCH (except, RETURN_MASK_ERROR) |
4122 | { | |
4123 | /* This isn't really ideal: all the data we allocate on the | |
4124 | objfile's obstack is still uselessly kept around. However, | |
4125 | freeing it seems unsafe. */ | |
4126 | struct cleanup *cleanups = make_cleanup_discard_psymtabs (objfile); | |
4127 | ||
4128 | dwarf2_build_psymtabs_hard (objfile); | |
4129 | discard_cleanups (cleanups); | |
4130 | } | |
4131 | if (except.reason < 0) | |
4132 | exception_print (gdb_stderr, except); | |
c906108c | 4133 | } |
c906108c | 4134 | |
1ce1cefd DE |
4135 | /* Return the total length of the CU described by HEADER. */ |
4136 | ||
4137 | static unsigned int | |
4138 | get_cu_length (const struct comp_unit_head *header) | |
4139 | { | |
4140 | return header->initial_length_size + header->length; | |
4141 | } | |
4142 | ||
45452591 DE |
4143 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
4144 | ||
4145 | static inline int | |
b64f50a1 | 4146 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 4147 | { |
b64f50a1 | 4148 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 4149 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 4150 | |
b64f50a1 | 4151 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
4152 | } |
4153 | ||
3b80fe9b DE |
4154 | /* Find the base address of the compilation unit for range lists and |
4155 | location lists. It will normally be specified by DW_AT_low_pc. | |
4156 | In DWARF-3 draft 4, the base address could be overridden by | |
4157 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
4158 | compilation units with discontinuous ranges. */ | |
4159 | ||
4160 | static void | |
4161 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
4162 | { | |
4163 | struct attribute *attr; | |
4164 | ||
4165 | cu->base_known = 0; | |
4166 | cu->base_address = 0; | |
4167 | ||
4168 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
4169 | if (attr) | |
4170 | { | |
4171 | cu->base_address = DW_ADDR (attr); | |
4172 | cu->base_known = 1; | |
4173 | } | |
4174 | else | |
4175 | { | |
4176 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4177 | if (attr) | |
4178 | { | |
4179 | cu->base_address = DW_ADDR (attr); | |
4180 | cu->base_known = 1; | |
4181 | } | |
4182 | } | |
4183 | } | |
4184 | ||
93311388 DE |
4185 | /* Read in the comp unit header information from the debug_info at info_ptr. |
4186 | NOTE: This leaves members offset, first_die_offset to be filled in | |
4187 | by the caller. */ | |
107d2387 | 4188 | |
d521ce57 | 4189 | static const gdb_byte * |
107d2387 | 4190 | read_comp_unit_head (struct comp_unit_head *cu_header, |
d521ce57 | 4191 | const gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
4192 | { |
4193 | int signed_addr; | |
891d2f0b | 4194 | unsigned int bytes_read; |
c764a876 DE |
4195 | |
4196 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
4197 | cu_header->initial_length_size = bytes_read; | |
4198 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 4199 | info_ptr += bytes_read; |
107d2387 AC |
4200 | cu_header->version = read_2_bytes (abfd, info_ptr); |
4201 | info_ptr += 2; | |
b64f50a1 JK |
4202 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
4203 | &bytes_read); | |
613e1657 | 4204 | info_ptr += bytes_read; |
107d2387 AC |
4205 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
4206 | info_ptr += 1; | |
4207 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
4208 | if (signed_addr < 0) | |
8e65ff28 | 4209 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4210 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 4211 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 4212 | |
107d2387 AC |
4213 | return info_ptr; |
4214 | } | |
4215 | ||
36586728 TT |
4216 | /* Helper function that returns the proper abbrev section for |
4217 | THIS_CU. */ | |
4218 | ||
4219 | static struct dwarf2_section_info * | |
4220 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
4221 | { | |
4222 | struct dwarf2_section_info *abbrev; | |
4223 | ||
4224 | if (this_cu->is_dwz) | |
4225 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
4226 | else | |
4227 | abbrev = &dwarf2_per_objfile->abbrev; | |
4228 | ||
4229 | return abbrev; | |
4230 | } | |
4231 | ||
9ff913ba DE |
4232 | /* Subroutine of read_and_check_comp_unit_head and |
4233 | read_and_check_type_unit_head to simplify them. | |
4234 | Perform various error checking on the header. */ | |
4235 | ||
4236 | static void | |
4237 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
4238 | struct dwarf2_section_info *section, |
4239 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 4240 | { |
a32a8923 DE |
4241 | bfd *abfd = get_section_bfd_owner (section); |
4242 | const char *filename = get_section_file_name (section); | |
9ff913ba DE |
4243 | |
4244 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
4245 | error (_("Dwarf Error: wrong version in compilation unit header " | |
4246 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
4247 | filename); | |
4248 | ||
b64f50a1 | 4249 | if (header->abbrev_offset.sect_off |
36586728 | 4250 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
4251 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
4252 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 4253 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
4254 | filename); |
4255 | ||
4256 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
4257 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4258 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4259 | > section->size) |
4260 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4261 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4262 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4263 | filename); |
4264 | } | |
4265 | ||
4266 | /* Read in a CU/TU header and perform some basic error checking. | |
4267 | The contents of the header are stored in HEADER. | |
4268 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4269 | |
d521ce57 | 4270 | static const gdb_byte * |
9ff913ba DE |
4271 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4272 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4273 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4274 | const gdb_byte *info_ptr, |
9ff913ba | 4275 | int is_debug_types_section) |
72bf9492 | 4276 | { |
d521ce57 | 4277 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4278 | bfd *abfd = get_section_bfd_owner (section); |
72bf9492 | 4279 | |
b64f50a1 | 4280 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4281 | |
72bf9492 DJ |
4282 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
4283 | ||
460c1c54 CC |
4284 | /* If we're reading a type unit, skip over the signature and |
4285 | type_offset fields. */ | |
b0df02fd | 4286 | if (is_debug_types_section) |
460c1c54 CC |
4287 | info_ptr += 8 /*signature*/ + header->offset_size; |
4288 | ||
b64f50a1 | 4289 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 4290 | |
4bdcc0c1 | 4291 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
4292 | |
4293 | return info_ptr; | |
4294 | } | |
4295 | ||
348e048f DE |
4296 | /* Read in the types comp unit header information from .debug_types entry at |
4297 | types_ptr. The result is a pointer to one past the end of the header. */ | |
4298 | ||
d521ce57 | 4299 | static const gdb_byte * |
9ff913ba DE |
4300 | read_and_check_type_unit_head (struct comp_unit_head *header, |
4301 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4302 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4303 | const gdb_byte *info_ptr, |
dee91e82 DE |
4304 | ULONGEST *signature, |
4305 | cu_offset *type_offset_in_tu) | |
348e048f | 4306 | { |
d521ce57 | 4307 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4308 | bfd *abfd = get_section_bfd_owner (section); |
348e048f | 4309 | |
b64f50a1 | 4310 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 4311 | |
9ff913ba | 4312 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 4313 | |
9ff913ba DE |
4314 | /* If we're reading a type unit, skip over the signature and |
4315 | type_offset fields. */ | |
4316 | if (signature != NULL) | |
4317 | *signature = read_8_bytes (abfd, info_ptr); | |
4318 | info_ptr += 8; | |
dee91e82 DE |
4319 | if (type_offset_in_tu != NULL) |
4320 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
4321 | header->offset_size); | |
9ff913ba DE |
4322 | info_ptr += header->offset_size; |
4323 | ||
b64f50a1 | 4324 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4325 | |
4bdcc0c1 | 4326 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4327 | |
4328 | return info_ptr; | |
348e048f DE |
4329 | } |
4330 | ||
f4dc4d17 DE |
4331 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4332 | ||
4333 | static sect_offset | |
4334 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4335 | sect_offset offset) | |
4336 | { | |
a32a8923 | 4337 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 4338 | const gdb_byte *info_ptr; |
f4dc4d17 DE |
4339 | unsigned int length, initial_length_size, offset_size; |
4340 | sect_offset abbrev_offset; | |
4341 | ||
4342 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4343 | info_ptr = section->buffer + offset.sect_off; | |
4344 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
4345 | offset_size = initial_length_size == 4 ? 4 : 8; | |
4346 | info_ptr += initial_length_size + 2 /*version*/; | |
4347 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
4348 | return abbrev_offset; | |
4349 | } | |
4350 | ||
aaa75496 JB |
4351 | /* Allocate a new partial symtab for file named NAME and mark this new |
4352 | partial symtab as being an include of PST. */ | |
4353 | ||
4354 | static void | |
d521ce57 | 4355 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
4356 | struct objfile *objfile) |
4357 | { | |
4358 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4359 | ||
fbd9ab74 JK |
4360 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4361 | { | |
4362 | /* It shares objfile->objfile_obstack. */ | |
4363 | subpst->dirname = pst->dirname; | |
4364 | } | |
4365 | ||
aaa75496 JB |
4366 | subpst->section_offsets = pst->section_offsets; |
4367 | subpst->textlow = 0; | |
4368 | subpst->texthigh = 0; | |
4369 | ||
4370 | subpst->dependencies = (struct partial_symtab **) | |
4371 | obstack_alloc (&objfile->objfile_obstack, | |
4372 | sizeof (struct partial_symtab *)); | |
4373 | subpst->dependencies[0] = pst; | |
4374 | subpst->number_of_dependencies = 1; | |
4375 | ||
4376 | subpst->globals_offset = 0; | |
4377 | subpst->n_global_syms = 0; | |
4378 | subpst->statics_offset = 0; | |
4379 | subpst->n_static_syms = 0; | |
4380 | subpst->symtab = NULL; | |
4381 | subpst->read_symtab = pst->read_symtab; | |
4382 | subpst->readin = 0; | |
4383 | ||
4384 | /* No private part is necessary for include psymtabs. This property | |
4385 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4386 | the regular ones. */ |
58a9656e | 4387 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4388 | } |
4389 | ||
4390 | /* Read the Line Number Program data and extract the list of files | |
4391 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4392 | partial symtab for each of these included files. */ |
aaa75496 JB |
4393 | |
4394 | static void | |
4395 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4396 | struct die_info *die, |
4397 | struct partial_symtab *pst) | |
aaa75496 | 4398 | { |
d85a05f0 DJ |
4399 | struct line_header *lh = NULL; |
4400 | struct attribute *attr; | |
aaa75496 | 4401 | |
d85a05f0 DJ |
4402 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4403 | if (attr) | |
3019eac3 | 4404 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4405 | if (lh == NULL) |
4406 | return; /* No linetable, so no includes. */ | |
4407 | ||
c6da4cef | 4408 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 4409 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
4410 | |
4411 | free_line_header (lh); | |
4412 | } | |
4413 | ||
348e048f | 4414 | static hashval_t |
52dc124a | 4415 | hash_signatured_type (const void *item) |
348e048f | 4416 | { |
52dc124a | 4417 | const struct signatured_type *sig_type = item; |
9a619af0 | 4418 | |
348e048f | 4419 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4420 | return sig_type->signature; |
348e048f DE |
4421 | } |
4422 | ||
4423 | static int | |
52dc124a | 4424 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
4425 | { |
4426 | const struct signatured_type *lhs = item_lhs; | |
4427 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4428 | |
348e048f DE |
4429 | return lhs->signature == rhs->signature; |
4430 | } | |
4431 | ||
1fd400ff TT |
4432 | /* Allocate a hash table for signatured types. */ |
4433 | ||
4434 | static htab_t | |
673bfd45 | 4435 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4436 | { |
4437 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4438 | hash_signatured_type, |
4439 | eq_signatured_type, | |
1fd400ff TT |
4440 | NULL, |
4441 | &objfile->objfile_obstack, | |
4442 | hashtab_obstack_allocate, | |
4443 | dummy_obstack_deallocate); | |
4444 | } | |
4445 | ||
d467dd73 | 4446 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4447 | |
4448 | static int | |
d467dd73 | 4449 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4450 | { |
4451 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4452 | struct signatured_type ***datap = datum; |
1fd400ff | 4453 | |
b4dd5633 | 4454 | **datap = sigt; |
1fd400ff TT |
4455 | ++*datap; |
4456 | ||
4457 | return 1; | |
4458 | } | |
4459 | ||
c88ee1f0 DE |
4460 | /* Create the hash table of all entries in the .debug_types |
4461 | (or .debug_types.dwo) section(s). | |
4462 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4463 | otherwise it is NULL. | |
4464 | ||
4465 | The result is a pointer to the hash table or NULL if there are no types. | |
4466 | ||
4467 | Note: This function processes DWO files only, not DWP files. */ | |
348e048f | 4468 | |
3019eac3 DE |
4469 | static htab_t |
4470 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4471 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4472 | { |
3019eac3 | 4473 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4474 | htab_t types_htab = NULL; |
8b70b953 TT |
4475 | int ix; |
4476 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4477 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4478 | |
3019eac3 DE |
4479 | if (VEC_empty (dwarf2_section_info_def, types)) |
4480 | return NULL; | |
348e048f | 4481 | |
4bdcc0c1 DE |
4482 | abbrev_section = (dwo_file != NULL |
4483 | ? &dwo_file->sections.abbrev | |
4484 | : &dwarf2_per_objfile->abbrev); | |
4485 | ||
09406207 DE |
4486 | if (dwarf2_read_debug) |
4487 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
4488 | dwo_file ? ".dwo" : "", | |
a32a8923 | 4489 | get_section_file_name (abbrev_section)); |
09406207 | 4490 | |
8b70b953 | 4491 | for (ix = 0; |
3019eac3 | 4492 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4493 | ++ix) |
4494 | { | |
3019eac3 | 4495 | bfd *abfd; |
d521ce57 | 4496 | const gdb_byte *info_ptr, *end_ptr; |
348e048f | 4497 | |
8b70b953 TT |
4498 | dwarf2_read_section (objfile, section); |
4499 | info_ptr = section->buffer; | |
348e048f | 4500 | |
8b70b953 TT |
4501 | if (info_ptr == NULL) |
4502 | continue; | |
348e048f | 4503 | |
3019eac3 | 4504 | /* We can't set abfd until now because the section may be empty or |
a32a8923 DE |
4505 | not present, in which case the bfd is unknown. */ |
4506 | abfd = get_section_bfd_owner (section); | |
3019eac3 | 4507 | |
dee91e82 DE |
4508 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4509 | because we don't need to read any dies: the signature is in the | |
4510 | header. */ | |
8b70b953 TT |
4511 | |
4512 | end_ptr = info_ptr + section->size; | |
4513 | while (info_ptr < end_ptr) | |
4514 | { | |
b64f50a1 | 4515 | sect_offset offset; |
3019eac3 | 4516 | cu_offset type_offset_in_tu; |
8b70b953 | 4517 | ULONGEST signature; |
52dc124a | 4518 | struct signatured_type *sig_type; |
3019eac3 | 4519 | struct dwo_unit *dwo_tu; |
8b70b953 | 4520 | void **slot; |
d521ce57 | 4521 | const gdb_byte *ptr = info_ptr; |
9ff913ba | 4522 | struct comp_unit_head header; |
dee91e82 | 4523 | unsigned int length; |
348e048f | 4524 | |
b64f50a1 | 4525 | offset.sect_off = ptr - section->buffer; |
348e048f | 4526 | |
8b70b953 | 4527 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4528 | table, but we don't need anything else just yet. */ |
348e048f | 4529 | |
4bdcc0c1 DE |
4530 | ptr = read_and_check_type_unit_head (&header, section, |
4531 | abbrev_section, ptr, | |
3019eac3 | 4532 | &signature, &type_offset_in_tu); |
6caca83c | 4533 | |
1ce1cefd | 4534 | length = get_cu_length (&header); |
dee91e82 | 4535 | |
6caca83c | 4536 | /* Skip dummy type units. */ |
dee91e82 DE |
4537 | if (ptr >= info_ptr + length |
4538 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4539 | { |
1ce1cefd | 4540 | info_ptr += length; |
6caca83c CC |
4541 | continue; |
4542 | } | |
8b70b953 | 4543 | |
0349ea22 DE |
4544 | if (types_htab == NULL) |
4545 | { | |
4546 | if (dwo_file) | |
4547 | types_htab = allocate_dwo_unit_table (objfile); | |
4548 | else | |
4549 | types_htab = allocate_signatured_type_table (objfile); | |
4550 | } | |
4551 | ||
3019eac3 DE |
4552 | if (dwo_file) |
4553 | { | |
4554 | sig_type = NULL; | |
4555 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4556 | struct dwo_unit); | |
4557 | dwo_tu->dwo_file = dwo_file; | |
4558 | dwo_tu->signature = signature; | |
4559 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
8a0459fd | 4560 | dwo_tu->section = section; |
3019eac3 DE |
4561 | dwo_tu->offset = offset; |
4562 | dwo_tu->length = length; | |
4563 | } | |
4564 | else | |
4565 | { | |
4566 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4567 | The real type_offset is in the DWO file. */ | |
4568 | dwo_tu = NULL; | |
4569 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4570 | struct signatured_type); | |
4571 | sig_type->signature = signature; | |
4572 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4573 | sig_type->per_cu.objfile = objfile; | |
4574 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 4575 | sig_type->per_cu.section = section; |
3019eac3 DE |
4576 | sig_type->per_cu.offset = offset; |
4577 | sig_type->per_cu.length = length; | |
4578 | } | |
8b70b953 | 4579 | |
3019eac3 DE |
4580 | slot = htab_find_slot (types_htab, |
4581 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4582 | INSERT); | |
8b70b953 TT |
4583 | gdb_assert (slot != NULL); |
4584 | if (*slot != NULL) | |
4585 | { | |
3019eac3 DE |
4586 | sect_offset dup_offset; |
4587 | ||
4588 | if (dwo_file) | |
4589 | { | |
4590 | const struct dwo_unit *dup_tu = *slot; | |
4591 | ||
4592 | dup_offset = dup_tu->offset; | |
4593 | } | |
4594 | else | |
4595 | { | |
4596 | const struct signatured_type *dup_tu = *slot; | |
4597 | ||
4598 | dup_offset = dup_tu->per_cu.offset; | |
4599 | } | |
b3c8eb43 | 4600 | |
8b70b953 | 4601 | complaint (&symfile_complaints, |
c88ee1f0 | 4602 | _("debug type entry at offset 0x%x is duplicate to" |
4031ecc5 | 4603 | " the entry at offset 0x%x, signature %s"), |
3019eac3 | 4604 | offset.sect_off, dup_offset.sect_off, |
4031ecc5 | 4605 | hex_string (signature)); |
8b70b953 | 4606 | } |
3019eac3 | 4607 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4608 | |
09406207 | 4609 | if (dwarf2_read_debug) |
4031ecc5 | 4610 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", |
b64f50a1 | 4611 | offset.sect_off, |
4031ecc5 | 4612 | hex_string (signature)); |
348e048f | 4613 | |
dee91e82 | 4614 | info_ptr += length; |
8b70b953 | 4615 | } |
348e048f DE |
4616 | } |
4617 | ||
3019eac3 DE |
4618 | return types_htab; |
4619 | } | |
4620 | ||
4621 | /* Create the hash table of all entries in the .debug_types section, | |
4622 | and initialize all_type_units. | |
4623 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4624 | otherwise non-zero. */ | |
4625 | ||
4626 | static int | |
4627 | create_all_type_units (struct objfile *objfile) | |
4628 | { | |
4629 | htab_t types_htab; | |
b4dd5633 | 4630 | struct signatured_type **iter; |
3019eac3 DE |
4631 | |
4632 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4633 | if (types_htab == NULL) | |
4634 | { | |
4635 | dwarf2_per_objfile->signatured_types = NULL; | |
4636 | return 0; | |
4637 | } | |
4638 | ||
348e048f DE |
4639 | dwarf2_per_objfile->signatured_types = types_htab; |
4640 | ||
d467dd73 DE |
4641 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
4642 | dwarf2_per_objfile->all_type_units | |
a2ce51a0 DE |
4643 | = xmalloc (dwarf2_per_objfile->n_type_units |
4644 | * sizeof (struct signatured_type *)); | |
d467dd73 DE |
4645 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4646 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4647 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4648 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4649 | |
348e048f DE |
4650 | return 1; |
4651 | } | |
4652 | ||
a2ce51a0 DE |
4653 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
4654 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
4655 | ||
4656 | static void | |
4657 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
4658 | struct signatured_type *sig_entry, | |
4659 | struct dwo_unit *dwo_entry) | |
4660 | { | |
7ee85ab1 | 4661 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
4662 | gdb_assert (! sig_entry->per_cu.queued); |
4663 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
4664 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
4665 | gdb_assert (sig_entry->per_cu.v.quick->symtab == NULL); | |
4666 | gdb_assert (sig_entry->signature == dwo_entry->signature); | |
4667 | gdb_assert (sig_entry->type_offset_in_section.sect_off == 0); | |
4668 | gdb_assert (sig_entry->type_unit_group == NULL); | |
7ee85ab1 DE |
4669 | gdb_assert (sig_entry->dwo_unit == NULL); |
4670 | ||
4671 | sig_entry->per_cu.section = dwo_entry->section; | |
4672 | sig_entry->per_cu.offset = dwo_entry->offset; | |
4673 | sig_entry->per_cu.length = dwo_entry->length; | |
4674 | sig_entry->per_cu.reading_dwo_directly = 1; | |
4675 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
4676 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
4677 | sig_entry->dwo_unit = dwo_entry; | |
4678 | } | |
4679 | ||
4680 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
4681 | If we haven't read the TU yet, create the signatured_type data structure |
4682 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
4683 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
4684 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
4685 | containing that CU. Otherwise we could end up reading several other DWO | |
4686 | files (due to comdat folding) to process the transitive closure of all the | |
4687 | mentioned TUs, and that can be slow. The current DWO file will have every | |
4688 | type signature that it needs. | |
a2ce51a0 DE |
4689 | We only do this for .gdb_index because in the psymtab case we already have |
4690 | to read all the DWOs to build the type unit groups. */ | |
4691 | ||
4692 | static struct signatured_type * | |
4693 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4694 | { | |
4695 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4696 | struct dwo_file *dwo_file; | |
4697 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
4698 | struct signatured_type find_sig_entry, *sig_entry; | |
4699 | ||
4700 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4701 | ||
4702 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the | |
4703 | dwo_unit of the TU itself. */ | |
4704 | dwo_file = cu->dwo_unit->dwo_file; | |
4705 | ||
4706 | /* We only ever need to read in one copy of a signatured type. | |
4707 | Just use the global signatured_types array. If this is the first time | |
4708 | we're reading this type, replace the recorded data from .gdb_index with | |
4709 | this TU. */ | |
4710 | ||
4711 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4712 | return NULL; | |
4713 | find_sig_entry.signature = sig; | |
4714 | sig_entry = htab_find (dwarf2_per_objfile->signatured_types, &find_sig_entry); | |
4715 | if (sig_entry == NULL) | |
4716 | return NULL; | |
7ee85ab1 DE |
4717 | |
4718 | /* We can get here with the TU already read, *or* in the process of being | |
4719 | read. Don't reassign it if that's the case. Also note that if the TU is | |
4720 | already being read, it may not have come from a DWO, the program may be | |
4721 | a mix of Fission-compiled code and non-Fission-compiled code. */ | |
a2ce51a0 | 4722 | /* Have we already tried to read this TU? */ |
7ee85ab1 | 4723 | if (sig_entry->per_cu.tu_read) |
a2ce51a0 DE |
4724 | return sig_entry; |
4725 | ||
4726 | /* Ok, this is the first time we're reading this TU. */ | |
4727 | if (dwo_file->tus == NULL) | |
4728 | return NULL; | |
4729 | find_dwo_entry.signature = sig; | |
4730 | dwo_entry = htab_find (dwo_file->tus, &find_dwo_entry); | |
4731 | if (dwo_entry == NULL) | |
4732 | return NULL; | |
4733 | ||
4734 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); | |
89e63ee4 | 4735 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
4736 | return sig_entry; |
4737 | } | |
4738 | ||
4739 | /* Subroutine of lookup_dwp_signatured_type. | |
4740 | Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. */ | |
4741 | ||
4742 | static struct signatured_type * | |
4743 | add_type_unit (ULONGEST sig) | |
4744 | { | |
4745 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4746 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
4747 | struct signatured_type *sig_type; | |
4748 | void **slot; | |
4749 | ||
4750 | ++n_type_units; | |
4751 | dwarf2_per_objfile->all_type_units = | |
4752 | xrealloc (dwarf2_per_objfile->all_type_units, | |
4753 | n_type_units * sizeof (struct signatured_type *)); | |
4754 | dwarf2_per_objfile->n_type_units = n_type_units; | |
4755 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4756 | struct signatured_type); | |
4757 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
4758 | sig_type->signature = sig; | |
4759 | sig_type->per_cu.is_debug_types = 1; | |
4760 | sig_type->per_cu.v.quick = | |
4761 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4762 | struct dwarf2_per_cu_quick_data); | |
4763 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4764 | sig_type, INSERT); | |
4765 | gdb_assert (*slot == NULL); | |
4766 | *slot = sig_type; | |
4767 | /* The rest of sig_type must be filled in by the caller. */ | |
4768 | return sig_type; | |
4769 | } | |
4770 | ||
4771 | /* Subroutine of lookup_signatured_type. | |
4772 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
4773 | then try the DWP file. | |
4774 | Normally this "can't happen", but if there's a bug in signature | |
4775 | generation and/or the DWP file is built incorrectly, it can happen. | |
4776 | Using the type directly from the DWP file means we don't have the stub | |
4777 | which has some useful attributes (e.g., DW_AT_comp_dir), but they're | |
4778 | not critical. [Eventually the stub may go away for type units anyway.] */ | |
4779 | ||
4780 | static struct signatured_type * | |
4781 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4782 | { | |
4783 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4784 | struct dwp_file *dwp_file = get_dwp_file (); | |
4785 | struct dwo_unit *dwo_entry; | |
4786 | struct signatured_type find_sig_entry, *sig_entry; | |
4787 | ||
4788 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4789 | gdb_assert (dwp_file != NULL); | |
4790 | ||
4791 | if (dwarf2_per_objfile->signatured_types != NULL) | |
4792 | { | |
4793 | find_sig_entry.signature = sig; | |
4794 | sig_entry = htab_find (dwarf2_per_objfile->signatured_types, | |
4795 | &find_sig_entry); | |
4796 | if (sig_entry != NULL) | |
4797 | return sig_entry; | |
4798 | } | |
4799 | ||
4800 | /* This is the "shouldn't happen" case. | |
4801 | Try the DWP file and hope for the best. */ | |
4802 | if (dwp_file->tus == NULL) | |
4803 | return NULL; | |
57d63ce2 DE |
4804 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
4805 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
4806 | if (dwo_entry == NULL) |
4807 | return NULL; | |
4808 | ||
4809 | sig_entry = add_type_unit (sig); | |
4810 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); | |
4811 | ||
4812 | /* The caller will signal a complaint if we return NULL. | |
4813 | Here we don't return NULL but we still want to complain. */ | |
4814 | complaint (&symfile_complaints, | |
4815 | _("Bad type signature %s referenced by %s at 0x%x," | |
4816 | " coping by using copy in DWP [in module %s]"), | |
4817 | hex_string (sig), | |
4818 | cu->per_cu->is_debug_types ? "TU" : "CU", | |
4819 | cu->per_cu->offset.sect_off, | |
4262abfb | 4820 | objfile_name (objfile)); |
a2ce51a0 DE |
4821 | |
4822 | return sig_entry; | |
4823 | } | |
4824 | ||
380bca97 | 4825 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
4826 | Returns NULL if signature SIG is not present in the table. |
4827 | It is up to the caller to complain about this. */ | |
348e048f DE |
4828 | |
4829 | static struct signatured_type * | |
a2ce51a0 | 4830 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 4831 | { |
a2ce51a0 DE |
4832 | if (cu->dwo_unit |
4833 | && dwarf2_per_objfile->using_index) | |
4834 | { | |
4835 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
4836 | These cases require special processing. */ | |
4837 | if (get_dwp_file () == NULL) | |
4838 | return lookup_dwo_signatured_type (cu, sig); | |
4839 | else | |
4840 | return lookup_dwp_signatured_type (cu, sig); | |
4841 | } | |
4842 | else | |
4843 | { | |
4844 | struct signatured_type find_entry, *entry; | |
348e048f | 4845 | |
a2ce51a0 DE |
4846 | if (dwarf2_per_objfile->signatured_types == NULL) |
4847 | return NULL; | |
4848 | find_entry.signature = sig; | |
4849 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
4850 | return entry; | |
4851 | } | |
348e048f | 4852 | } |
42e7ad6c DE |
4853 | \f |
4854 | /* Low level DIE reading support. */ | |
348e048f | 4855 | |
d85a05f0 DJ |
4856 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
4857 | ||
4858 | static void | |
4859 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 4860 | struct dwarf2_cu *cu, |
3019eac3 DE |
4861 | struct dwarf2_section_info *section, |
4862 | struct dwo_file *dwo_file) | |
d85a05f0 | 4863 | { |
fceca515 | 4864 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 4865 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 4866 | reader->cu = cu; |
3019eac3 | 4867 | reader->dwo_file = dwo_file; |
dee91e82 DE |
4868 | reader->die_section = section; |
4869 | reader->buffer = section->buffer; | |
f664829e | 4870 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 4871 | reader->comp_dir = NULL; |
d85a05f0 DJ |
4872 | } |
4873 | ||
b0c7bfa9 DE |
4874 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
4875 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
4876 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
4877 | already. | |
4878 | ||
4879 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
4880 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
4881 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
4882 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
4883 | attribute of the referencing CU. Exactly one of STUB_COMP_UNIT_DIE and | |
4884 | COMP_DIR must be non-NULL. | |
b0c7bfa9 DE |
4885 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
4886 | are filled in with the info of the DIE from the DWO file. | |
4887 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
4888 | provided an abbrev table to use. | |
4889 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
4890 | ||
4891 | static int | |
4892 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
4893 | struct dwo_unit *dwo_unit, | |
4894 | int abbrev_table_provided, | |
4895 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 4896 | const char *stub_comp_dir, |
b0c7bfa9 | 4897 | struct die_reader_specs *result_reader, |
d521ce57 | 4898 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
4899 | struct die_info **result_comp_unit_die, |
4900 | int *result_has_children) | |
4901 | { | |
4902 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4903 | struct dwarf2_cu *cu = this_cu->cu; | |
4904 | struct dwarf2_section_info *section; | |
4905 | bfd *abfd; | |
d521ce57 | 4906 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
4907 | const char *comp_dir_string; |
4908 | ULONGEST signature; /* Or dwo_id. */ | |
4909 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
4910 | int i,num_extra_attrs; | |
4911 | struct dwarf2_section_info *dwo_abbrev_section; | |
4912 | struct attribute *attr; | |
a2ce51a0 | 4913 | struct attribute comp_dir_attr; |
b0c7bfa9 DE |
4914 | struct die_info *comp_unit_die; |
4915 | ||
a2ce51a0 DE |
4916 | /* Both can't be provided. */ |
4917 | gdb_assert (! (stub_comp_unit_die && stub_comp_dir)); | |
4918 | ||
b0c7bfa9 DE |
4919 | /* These attributes aren't processed until later: |
4920 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
4921 | However, the attribute is found in the stub which we won't have later. | |
4922 | In order to not impose this complication on the rest of the code, | |
4923 | we read them here and copy them to the DWO CU/TU die. */ | |
4924 | ||
4925 | stmt_list = NULL; | |
4926 | low_pc = NULL; | |
4927 | high_pc = NULL; | |
4928 | ranges = NULL; | |
4929 | comp_dir = NULL; | |
4930 | ||
4931 | if (stub_comp_unit_die != NULL) | |
4932 | { | |
4933 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
4934 | DWO file. */ | |
4935 | if (! this_cu->is_debug_types) | |
4936 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
4937 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
4938 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
4939 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
4940 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
4941 | ||
4942 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
4943 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
4944 | cu->addr_base = 0; | |
4945 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
4946 | if (attr) | |
4947 | cu->addr_base = DW_UNSND (attr); | |
4948 | ||
4949 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
4950 | We need the value before we can process DW_AT_ranges. */ | |
4951 | cu->ranges_base = 0; | |
4952 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
4953 | if (attr) | |
4954 | cu->ranges_base = DW_UNSND (attr); | |
4955 | } | |
a2ce51a0 DE |
4956 | else if (stub_comp_dir != NULL) |
4957 | { | |
4958 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
4959 | comp_dir = (struct attribute *) | |
4960 | obstack_alloc (&cu->comp_unit_obstack, sizeof (*comp_dir)); | |
4961 | comp_dir->name = DW_AT_comp_dir; | |
4962 | comp_dir->form = DW_FORM_string; | |
4963 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
4964 | DW_STRING (comp_dir) = stub_comp_dir; | |
4965 | } | |
b0c7bfa9 DE |
4966 | |
4967 | /* Set up for reading the DWO CU/TU. */ | |
4968 | cu->dwo_unit = dwo_unit; | |
4969 | section = dwo_unit->section; | |
4970 | dwarf2_read_section (objfile, section); | |
a32a8923 | 4971 | abfd = get_section_bfd_owner (section); |
b0c7bfa9 DE |
4972 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
4973 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; | |
4974 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
4975 | ||
4976 | if (this_cu->is_debug_types) | |
4977 | { | |
4978 | ULONGEST header_signature; | |
4979 | cu_offset type_offset_in_tu; | |
4980 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; | |
4981 | ||
4982 | info_ptr = read_and_check_type_unit_head (&cu->header, section, | |
4983 | dwo_abbrev_section, | |
4984 | info_ptr, | |
4985 | &header_signature, | |
4986 | &type_offset_in_tu); | |
a2ce51a0 DE |
4987 | /* This is not an assert because it can be caused by bad debug info. */ |
4988 | if (sig_type->signature != header_signature) | |
4989 | { | |
4990 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
4991 | " TU at offset 0x%x [in module %s]"), | |
4992 | hex_string (sig_type->signature), | |
4993 | hex_string (header_signature), | |
4994 | dwo_unit->offset.sect_off, | |
4995 | bfd_get_filename (abfd)); | |
4996 | } | |
b0c7bfa9 DE |
4997 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
4998 | /* For DWOs coming from DWP files, we don't know the CU length | |
4999 | nor the type's offset in the TU until now. */ | |
5000 | dwo_unit->length = get_cu_length (&cu->header); | |
5001 | dwo_unit->type_offset_in_tu = type_offset_in_tu; | |
5002 | ||
5003 | /* Establish the type offset that can be used to lookup the type. | |
5004 | For DWO files, we don't know it until now. */ | |
5005 | sig_type->type_offset_in_section.sect_off = | |
5006 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
5007 | } | |
5008 | else | |
5009 | { | |
5010 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
5011 | dwo_abbrev_section, | |
5012 | info_ptr, 0); | |
5013 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
5014 | /* For DWOs coming from DWP files, we don't know the CU length | |
5015 | until now. */ | |
5016 | dwo_unit->length = get_cu_length (&cu->header); | |
5017 | } | |
5018 | ||
02142a6c DE |
5019 | /* Replace the CU's original abbrev table with the DWO's. |
5020 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
5021 | if (abbrev_table_provided) |
5022 | { | |
5023 | /* Don't free the provided abbrev table, the caller of | |
5024 | init_cutu_and_read_dies owns it. */ | |
5025 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5026 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
5027 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5028 | } | |
5029 | else | |
5030 | { | |
5031 | dwarf2_free_abbrev_table (cu); | |
5032 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5033 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
5034 | } |
5035 | ||
5036 | /* Read in the die, but leave space to copy over the attributes | |
5037 | from the stub. This has the benefit of simplifying the rest of | |
5038 | the code - all the work to maintain the illusion of a single | |
5039 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
5040 | num_extra_attrs = ((stmt_list != NULL) | |
5041 | + (low_pc != NULL) | |
5042 | + (high_pc != NULL) | |
5043 | + (ranges != NULL) | |
5044 | + (comp_dir != NULL)); | |
5045 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
5046 | result_has_children, num_extra_attrs); | |
5047 | ||
5048 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
5049 | comp_unit_die = *result_comp_unit_die; | |
5050 | i = comp_unit_die->num_attrs; | |
5051 | if (stmt_list != NULL) | |
5052 | comp_unit_die->attrs[i++] = *stmt_list; | |
5053 | if (low_pc != NULL) | |
5054 | comp_unit_die->attrs[i++] = *low_pc; | |
5055 | if (high_pc != NULL) | |
5056 | comp_unit_die->attrs[i++] = *high_pc; | |
5057 | if (ranges != NULL) | |
5058 | comp_unit_die->attrs[i++] = *ranges; | |
5059 | if (comp_dir != NULL) | |
5060 | comp_unit_die->attrs[i++] = *comp_dir; | |
5061 | comp_unit_die->num_attrs += num_extra_attrs; | |
5062 | ||
bf6af496 DE |
5063 | if (dwarf2_die_debug) |
5064 | { | |
5065 | fprintf_unfiltered (gdb_stdlog, | |
5066 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 5067 | get_section_name (section), |
bf6af496 DE |
5068 | (unsigned) (begin_info_ptr - section->buffer), |
5069 | bfd_get_filename (abfd)); | |
5070 | dump_die (comp_unit_die, dwarf2_die_debug); | |
5071 | } | |
5072 | ||
a2ce51a0 DE |
5073 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
5074 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
5075 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
5076 | to get it via circuitous means. Blech. */ | |
5077 | if (comp_dir != NULL) | |
5078 | result_reader->comp_dir = DW_STRING (comp_dir); | |
5079 | ||
b0c7bfa9 DE |
5080 | /* Skip dummy compilation units. */ |
5081 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
5082 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
5083 | return 0; | |
5084 | ||
5085 | *result_info_ptr = info_ptr; | |
5086 | return 1; | |
5087 | } | |
5088 | ||
5089 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
5090 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 5091 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
5092 | |
5093 | static struct dwo_unit * | |
5094 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
5095 | struct die_info *comp_unit_die) | |
5096 | { | |
5097 | struct dwarf2_cu *cu = this_cu->cu; | |
5098 | struct attribute *attr; | |
5099 | ULONGEST signature; | |
5100 | struct dwo_unit *dwo_unit; | |
5101 | const char *comp_dir, *dwo_name; | |
5102 | ||
a2ce51a0 DE |
5103 | gdb_assert (cu != NULL); |
5104 | ||
b0c7bfa9 DE |
5105 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
5106 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
5107 | gdb_assert (attr != NULL); | |
5108 | dwo_name = DW_STRING (attr); | |
5109 | comp_dir = NULL; | |
5110 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5111 | if (attr) | |
5112 | comp_dir = DW_STRING (attr); | |
5113 | ||
5114 | if (this_cu->is_debug_types) | |
5115 | { | |
5116 | struct signatured_type *sig_type; | |
5117 | ||
5118 | /* Since this_cu is the first member of struct signatured_type, | |
5119 | we can go from a pointer to one to a pointer to the other. */ | |
5120 | sig_type = (struct signatured_type *) this_cu; | |
5121 | signature = sig_type->signature; | |
5122 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
5123 | } | |
5124 | else | |
5125 | { | |
5126 | struct attribute *attr; | |
5127 | ||
5128 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
5129 | if (! attr) | |
5130 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
5131 | " [in module %s]"), | |
4262abfb | 5132 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
5133 | signature = DW_UNSND (attr); |
5134 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
5135 | signature); | |
5136 | } | |
5137 | ||
b0c7bfa9 DE |
5138 | return dwo_unit; |
5139 | } | |
5140 | ||
a2ce51a0 DE |
5141 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
5142 | Read a TU directly from a DWO file, bypassing the stub. */ | |
5143 | ||
5144 | static void | |
5145 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, int keep, | |
5146 | die_reader_func_ftype *die_reader_func, | |
5147 | void *data) | |
5148 | { | |
5149 | struct dwarf2_cu *cu; | |
5150 | struct signatured_type *sig_type; | |
5151 | struct cleanup *cleanups, *free_cu_cleanup; | |
5152 | struct die_reader_specs reader; | |
5153 | const gdb_byte *info_ptr; | |
5154 | struct die_info *comp_unit_die; | |
5155 | int has_children; | |
5156 | ||
5157 | /* Verify we can do the following downcast, and that we have the | |
5158 | data we need. */ | |
5159 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
5160 | sig_type = (struct signatured_type *) this_cu; | |
5161 | gdb_assert (sig_type->dwo_unit != NULL); | |
5162 | ||
5163 | cleanups = make_cleanup (null_cleanup, NULL); | |
5164 | ||
5165 | gdb_assert (this_cu->cu == NULL); | |
5166 | cu = xmalloc (sizeof (*cu)); | |
5167 | init_one_comp_unit (cu, this_cu); | |
5168 | /* If an error occurs while loading, release our storage. */ | |
5169 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
5170 | ||
5171 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
5172 | 0 /* abbrev_table_provided */, | |
5173 | NULL /* stub_comp_unit_die */, | |
5174 | sig_type->dwo_unit->dwo_file->comp_dir, | |
5175 | &reader, &info_ptr, | |
5176 | &comp_unit_die, &has_children) == 0) | |
5177 | { | |
5178 | /* Dummy die. */ | |
5179 | do_cleanups (cleanups); | |
5180 | return; | |
5181 | } | |
5182 | ||
5183 | /* All the "real" work is done here. */ | |
5184 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5185 | ||
5186 | /* This duplicates some code in init_cutu_and_read_dies, | |
5187 | but the alternative is making the latter more complex. | |
5188 | This function is only for the special case of using DWO files directly: | |
5189 | no point in overly complicating the general case just to handle this. */ | |
5190 | if (keep) | |
5191 | { | |
5192 | /* We've successfully allocated this compilation unit. Let our | |
5193 | caller clean it up when finished with it. */ | |
5194 | discard_cleanups (free_cu_cleanup); | |
5195 | ||
5196 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
5197 | So we have to manually free the abbrev table. */ | |
5198 | dwarf2_free_abbrev_table (cu); | |
5199 | ||
5200 | /* Link this CU into read_in_chain. */ | |
5201 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5202 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5203 | } | |
5204 | else | |
5205 | do_cleanups (free_cu_cleanup); | |
5206 | ||
5207 | do_cleanups (cleanups); | |
5208 | } | |
5209 | ||
fd820528 | 5210 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 5211 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 5212 | |
f4dc4d17 DE |
5213 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
5214 | Otherwise the table specified in the comp unit header is read in and used. | |
5215 | This is an optimization for when we already have the abbrev table. | |
5216 | ||
dee91e82 DE |
5217 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
5218 | Otherwise, a new CU is allocated with xmalloc. | |
5219 | ||
5220 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
5221 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
5222 | ||
5223 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 5224 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 5225 | |
70221824 | 5226 | static void |
fd820528 | 5227 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 5228 | struct abbrev_table *abbrev_table, |
fd820528 DE |
5229 | int use_existing_cu, int keep, |
5230 | die_reader_func_ftype *die_reader_func, | |
5231 | void *data) | |
c906108c | 5232 | { |
dee91e82 | 5233 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 5234 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5235 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5236 | struct dwarf2_cu *cu; |
d521ce57 | 5237 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 5238 | struct die_reader_specs reader; |
d85a05f0 | 5239 | struct die_info *comp_unit_die; |
dee91e82 | 5240 | int has_children; |
d85a05f0 | 5241 | struct attribute *attr; |
365156ad | 5242 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 5243 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 5244 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
5245 | /* Non-zero if CU currently points to a DWO file and we need to |
5246 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 5247 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 5248 | int rereading_dwo_cu = 0; |
c906108c | 5249 | |
09406207 DE |
5250 | if (dwarf2_die_debug) |
5251 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5252 | this_cu->is_debug_types ? "type" : "comp", | |
5253 | this_cu->offset.sect_off); | |
5254 | ||
dee91e82 DE |
5255 | if (use_existing_cu) |
5256 | gdb_assert (keep); | |
23745b47 | 5257 | |
a2ce51a0 DE |
5258 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
5259 | file (instead of going through the stub), short-circuit all of this. */ | |
5260 | if (this_cu->reading_dwo_directly) | |
5261 | { | |
5262 | /* Narrow down the scope of possibilities to have to understand. */ | |
5263 | gdb_assert (this_cu->is_debug_types); | |
5264 | gdb_assert (abbrev_table == NULL); | |
5265 | gdb_assert (!use_existing_cu); | |
5266 | init_tu_and_read_dwo_dies (this_cu, keep, die_reader_func, data); | |
5267 | return; | |
5268 | } | |
5269 | ||
dee91e82 DE |
5270 | cleanups = make_cleanup (null_cleanup, NULL); |
5271 | ||
5272 | /* This is cheap if the section is already read in. */ | |
5273 | dwarf2_read_section (objfile, section); | |
5274 | ||
5275 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
5276 | |
5277 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
5278 | |
5279 | if (use_existing_cu && this_cu->cu != NULL) | |
5280 | { | |
5281 | cu = this_cu->cu; | |
42e7ad6c DE |
5282 | |
5283 | /* If this CU is from a DWO file we need to start over, we need to | |
5284 | refetch the attributes from the skeleton CU. | |
5285 | This could be optimized by retrieving those attributes from when we | |
5286 | were here the first time: the previous comp_unit_die was stored in | |
5287 | comp_unit_obstack. But there's no data yet that we need this | |
5288 | optimization. */ | |
5289 | if (cu->dwo_unit != NULL) | |
5290 | rereading_dwo_cu = 1; | |
dee91e82 DE |
5291 | } |
5292 | else | |
5293 | { | |
5294 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5295 | gdb_assert (this_cu->cu == NULL); | |
5296 | ||
5297 | cu = xmalloc (sizeof (*cu)); | |
5298 | init_one_comp_unit (cu, this_cu); | |
5299 | ||
5300 | /* If an error occurs while loading, release our storage. */ | |
365156ad | 5301 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 5302 | } |
dee91e82 | 5303 | |
b0c7bfa9 | 5304 | /* Get the header. */ |
42e7ad6c DE |
5305 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
5306 | { | |
5307 | /* We already have the header, there's no need to read it in again. */ | |
5308 | info_ptr += cu->header.first_die_offset.cu_off; | |
5309 | } | |
5310 | else | |
5311 | { | |
3019eac3 | 5312 | if (this_cu->is_debug_types) |
dee91e82 DE |
5313 | { |
5314 | ULONGEST signature; | |
42e7ad6c | 5315 | cu_offset type_offset_in_tu; |
dee91e82 | 5316 | |
4bdcc0c1 DE |
5317 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
5318 | abbrev_section, info_ptr, | |
42e7ad6c DE |
5319 | &signature, |
5320 | &type_offset_in_tu); | |
dee91e82 | 5321 | |
42e7ad6c DE |
5322 | /* Since per_cu is the first member of struct signatured_type, |
5323 | we can go from a pointer to one to a pointer to the other. */ | |
5324 | sig_type = (struct signatured_type *) this_cu; | |
5325 | gdb_assert (sig_type->signature == signature); | |
5326 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
5327 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
5328 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
5329 | ||
42e7ad6c DE |
5330 | /* LENGTH has not been set yet for type units if we're |
5331 | using .gdb_index. */ | |
1ce1cefd | 5332 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
5333 | |
5334 | /* Establish the type offset that can be used to lookup the type. */ | |
5335 | sig_type->type_offset_in_section.sect_off = | |
5336 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
5337 | } |
5338 | else | |
5339 | { | |
4bdcc0c1 DE |
5340 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
5341 | abbrev_section, | |
5342 | info_ptr, 0); | |
dee91e82 DE |
5343 | |
5344 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 5345 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
5346 | } |
5347 | } | |
10b3939b | 5348 | |
6caca83c | 5349 | /* Skip dummy compilation units. */ |
dee91e82 | 5350 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
5351 | || peek_abbrev_code (abfd, info_ptr) == 0) |
5352 | { | |
dee91e82 | 5353 | do_cleanups (cleanups); |
21b2bd31 | 5354 | return; |
6caca83c CC |
5355 | } |
5356 | ||
433df2d4 DE |
5357 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
5358 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
5359 | done. Note that it's important that if the CU had an abbrev table |
5360 | on entry we don't free it when we're done: Somewhere up the call stack | |
5361 | it may be in use. */ | |
f4dc4d17 DE |
5362 | if (abbrev_table != NULL) |
5363 | { | |
5364 | gdb_assert (cu->abbrev_table == NULL); | |
5365 | gdb_assert (cu->header.abbrev_offset.sect_off | |
5366 | == abbrev_table->offset.sect_off); | |
5367 | cu->abbrev_table = abbrev_table; | |
5368 | } | |
5369 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 5370 | { |
4bdcc0c1 | 5371 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
5372 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5373 | } | |
42e7ad6c DE |
5374 | else if (rereading_dwo_cu) |
5375 | { | |
5376 | dwarf2_free_abbrev_table (cu); | |
5377 | dwarf2_read_abbrevs (cu, abbrev_section); | |
5378 | } | |
af703f96 | 5379 | |
dee91e82 | 5380 | /* Read the top level CU/TU die. */ |
3019eac3 | 5381 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 5382 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 5383 | |
b0c7bfa9 DE |
5384 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
5385 | from the DWO file. | |
5386 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
5387 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
5388 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5389 | if (attr) | |
5390 | { | |
3019eac3 | 5391 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 5392 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
5393 | |
5394 | if (has_children) | |
6a506a2d DE |
5395 | { |
5396 | complaint (&symfile_complaints, | |
5397 | _("compilation unit with DW_AT_GNU_dwo_name" | |
5398 | " has children (offset 0x%x) [in module %s]"), | |
5399 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
5400 | } | |
b0c7bfa9 | 5401 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 5402 | if (dwo_unit != NULL) |
3019eac3 | 5403 | { |
6a506a2d DE |
5404 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
5405 | abbrev_table != NULL, | |
a2ce51a0 | 5406 | comp_unit_die, NULL, |
6a506a2d DE |
5407 | &reader, &info_ptr, |
5408 | &dwo_comp_unit_die, &has_children) == 0) | |
5409 | { | |
5410 | /* Dummy die. */ | |
5411 | do_cleanups (cleanups); | |
5412 | return; | |
5413 | } | |
5414 | comp_unit_die = dwo_comp_unit_die; | |
5415 | } | |
5416 | else | |
5417 | { | |
5418 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
5419 | the stub. A complaint has already been logged. There's | |
5420 | not much more we can do except pass on the stub DIE to | |
5421 | die_reader_func. We don't want to throw an error on bad | |
5422 | debug info. */ | |
3019eac3 DE |
5423 | } |
5424 | } | |
5425 | ||
b0c7bfa9 | 5426 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
5427 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
5428 | ||
b0c7bfa9 | 5429 | /* Done, clean up. */ |
365156ad | 5430 | if (free_cu_cleanup != NULL) |
348e048f | 5431 | { |
365156ad TT |
5432 | if (keep) |
5433 | { | |
5434 | /* We've successfully allocated this compilation unit. Let our | |
5435 | caller clean it up when finished with it. */ | |
5436 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 5437 | |
365156ad TT |
5438 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5439 | So we have to manually free the abbrev table. */ | |
5440 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 5441 | |
365156ad TT |
5442 | /* Link this CU into read_in_chain. */ |
5443 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5444 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5445 | } | |
5446 | else | |
5447 | do_cleanups (free_cu_cleanup); | |
348e048f | 5448 | } |
365156ad TT |
5449 | |
5450 | do_cleanups (cleanups); | |
dee91e82 DE |
5451 | } |
5452 | ||
3019eac3 DE |
5453 | /* Read CU/TU THIS_CU in section SECTION, |
5454 | but do not follow DW_AT_GNU_dwo_name if present. | |
80626a55 DE |
5455 | DWOP_FILE, if non-NULL, is the DWO/DWP file to read (the caller is assumed |
5456 | to have already done the lookup to find the DWO/DWP file). | |
dee91e82 DE |
5457 | |
5458 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 5459 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
5460 | |
5461 | We fill in THIS_CU->length. | |
5462 | ||
5463 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
5464 | linker) then DIE_READER_FUNC will not get called. | |
5465 | ||
5466 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5467 | This is done in order to not leave THIS_CU->cu in a state where we have |
5468 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
5469 | |
5470 | static void | |
5471 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
5472 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 5473 | struct dwo_file *dwo_file, |
dee91e82 DE |
5474 | die_reader_func_ftype *die_reader_func, |
5475 | void *data) | |
5476 | { | |
5477 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 5478 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5479 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5480 | struct dwarf2_cu cu; |
d521ce57 | 5481 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
5482 | struct die_reader_specs reader; |
5483 | struct cleanup *cleanups; | |
5484 | struct die_info *comp_unit_die; | |
5485 | int has_children; | |
5486 | ||
09406207 DE |
5487 | if (dwarf2_die_debug) |
5488 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5489 | this_cu->is_debug_types ? "type" : "comp", | |
5490 | this_cu->offset.sect_off); | |
5491 | ||
dee91e82 DE |
5492 | gdb_assert (this_cu->cu == NULL); |
5493 | ||
dee91e82 DE |
5494 | /* This is cheap if the section is already read in. */ |
5495 | dwarf2_read_section (objfile, section); | |
5496 | ||
5497 | init_one_comp_unit (&cu, this_cu); | |
5498 | ||
5499 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
5500 | ||
5501 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
5502 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
5503 | abbrev_section, info_ptr, | |
3019eac3 | 5504 | this_cu->is_debug_types); |
dee91e82 | 5505 | |
1ce1cefd | 5506 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
5507 | |
5508 | /* Skip dummy compilation units. */ | |
5509 | if (info_ptr >= begin_info_ptr + this_cu->length | |
5510 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 5511 | { |
dee91e82 | 5512 | do_cleanups (cleanups); |
21b2bd31 | 5513 | return; |
93311388 | 5514 | } |
72bf9492 | 5515 | |
dee91e82 DE |
5516 | dwarf2_read_abbrevs (&cu, abbrev_section); |
5517 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
5518 | ||
3019eac3 | 5519 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
5520 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
5521 | ||
5522 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5523 | ||
5524 | do_cleanups (cleanups); | |
5525 | } | |
5526 | ||
3019eac3 DE |
5527 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
5528 | does not lookup the specified DWO file. | |
5529 | This cannot be used to read DWO files. | |
dee91e82 DE |
5530 | |
5531 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5532 | This is done in order to not leave THIS_CU->cu in a state where we have |
5533 | to care whether it refers to the "main" CU or the DWO CU. | |
5534 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
5535 | |
5536 | static void | |
5537 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
5538 | die_reader_func_ftype *die_reader_func, | |
5539 | void *data) | |
5540 | { | |
5541 | init_cutu_and_read_dies_no_follow (this_cu, | |
36586728 | 5542 | get_abbrev_section_for_cu (this_cu), |
3019eac3 | 5543 | NULL, |
dee91e82 DE |
5544 | die_reader_func, data); |
5545 | } | |
0018ea6f DE |
5546 | \f |
5547 | /* Type Unit Groups. | |
dee91e82 | 5548 | |
0018ea6f DE |
5549 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
5550 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
5551 | so that all types coming from the same compilation (.o file) are grouped | |
5552 | together. A future step could be to put the types in the same symtab as | |
5553 | the CU the types ultimately came from. */ | |
ff013f42 | 5554 | |
f4dc4d17 DE |
5555 | static hashval_t |
5556 | hash_type_unit_group (const void *item) | |
5557 | { | |
094b34ac | 5558 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 5559 | |
094b34ac | 5560 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5561 | } |
348e048f DE |
5562 | |
5563 | static int | |
f4dc4d17 | 5564 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5565 | { |
f4dc4d17 DE |
5566 | const struct type_unit_group *lhs = item_lhs; |
5567 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 5568 | |
094b34ac | 5569 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5570 | } |
348e048f | 5571 | |
f4dc4d17 DE |
5572 | /* Allocate a hash table for type unit groups. */ |
5573 | ||
5574 | static htab_t | |
5575 | allocate_type_unit_groups_table (void) | |
5576 | { | |
5577 | return htab_create_alloc_ex (3, | |
5578 | hash_type_unit_group, | |
5579 | eq_type_unit_group, | |
5580 | NULL, | |
5581 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5582 | hashtab_obstack_allocate, | |
5583 | dummy_obstack_deallocate); | |
5584 | } | |
dee91e82 | 5585 | |
f4dc4d17 DE |
5586 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5587 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5588 | of any one psymtab grow too big. */ | |
5589 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5590 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5591 | |
094b34ac | 5592 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5593 | Create the type_unit_group object used to hold one or more TUs. */ |
5594 | ||
5595 | static struct type_unit_group * | |
094b34ac | 5596 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5597 | { |
5598 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5599 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5600 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5601 | |
5602 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5603 | struct type_unit_group); | |
094b34ac | 5604 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 5605 | per_cu->objfile = objfile; |
f4dc4d17 | 5606 | |
094b34ac DE |
5607 | if (dwarf2_per_objfile->using_index) |
5608 | { | |
5609 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5610 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
5611 | } |
5612 | else | |
5613 | { | |
5614 | unsigned int line_offset = line_offset_struct.sect_off; | |
5615 | struct partial_symtab *pst; | |
5616 | char *name; | |
5617 | ||
5618 | /* Give the symtab a useful name for debug purposes. */ | |
5619 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5620 | name = xstrprintf ("<type_units_%d>", | |
5621 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5622 | else | |
5623 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5624 | ||
5625 | pst = create_partial_symtab (per_cu, name); | |
5626 | pst->anonymous = 1; | |
f4dc4d17 | 5627 | |
094b34ac DE |
5628 | xfree (name); |
5629 | } | |
f4dc4d17 | 5630 | |
094b34ac DE |
5631 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5632 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5633 | |
5634 | return tu_group; | |
5635 | } | |
5636 | ||
094b34ac DE |
5637 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5638 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5639 | |
5640 | static struct type_unit_group * | |
ff39bb5e | 5641 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
5642 | { |
5643 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5644 | struct type_unit_group *tu_group; | |
5645 | void **slot; | |
5646 | unsigned int line_offset; | |
5647 | struct type_unit_group type_unit_group_for_lookup; | |
5648 | ||
5649 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5650 | { | |
5651 | dwarf2_per_objfile->type_unit_groups = | |
5652 | allocate_type_unit_groups_table (); | |
5653 | } | |
5654 | ||
5655 | /* Do we need to create a new group, or can we use an existing one? */ | |
5656 | ||
5657 | if (stmt_list) | |
5658 | { | |
5659 | line_offset = DW_UNSND (stmt_list); | |
5660 | ++tu_stats->nr_symtab_sharers; | |
5661 | } | |
5662 | else | |
5663 | { | |
5664 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5665 | We can do various things here like create one group per TU or | |
5666 | spread them over multiple groups to split up the expansion work. | |
5667 | To avoid worst case scenarios (too many groups or too large groups) | |
5668 | we, umm, group them in bunches. */ | |
5669 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5670 | | (tu_stats->nr_stmt_less_type_units | |
5671 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5672 | ++tu_stats->nr_stmt_less_type_units; | |
5673 | } | |
5674 | ||
094b34ac DE |
5675 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5676 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5677 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5678 | &type_unit_group_for_lookup, INSERT); | |
5679 | if (*slot != NULL) | |
5680 | { | |
5681 | tu_group = *slot; | |
5682 | gdb_assert (tu_group != NULL); | |
5683 | } | |
5684 | else | |
5685 | { | |
5686 | sect_offset line_offset_struct; | |
5687 | ||
5688 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5689 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5690 | *slot = tu_group; |
5691 | ++tu_stats->nr_symtabs; | |
5692 | } | |
5693 | ||
5694 | return tu_group; | |
5695 | } | |
5696 | ||
5697 | /* Struct used to sort TUs by their abbreviation table offset. */ | |
5698 | ||
5699 | struct tu_abbrev_offset | |
5700 | { | |
5701 | struct signatured_type *sig_type; | |
5702 | sect_offset abbrev_offset; | |
5703 | }; | |
5704 | ||
5705 | /* Helper routine for build_type_unit_groups, passed to qsort. */ | |
5706 | ||
5707 | static int | |
5708 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
5709 | { | |
5710 | const struct tu_abbrev_offset * const *a = ap; | |
5711 | const struct tu_abbrev_offset * const *b = bp; | |
5712 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
5713 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
5714 | ||
5715 | return (aoff > boff) - (aoff < boff); | |
5716 | } | |
5717 | ||
5718 | /* A helper function to add a type_unit_group to a table. */ | |
5719 | ||
5720 | static int | |
5721 | add_type_unit_group_to_table (void **slot, void *datum) | |
5722 | { | |
5723 | struct type_unit_group *tu_group = *slot; | |
5724 | struct type_unit_group ***datap = datum; | |
5725 | ||
5726 | **datap = tu_group; | |
5727 | ++*datap; | |
5728 | ||
5729 | return 1; | |
5730 | } | |
5731 | ||
5732 | /* Efficiently read all the type units, calling init_cutu_and_read_dies on | |
5733 | each one passing FUNC,DATA. | |
5734 | ||
5735 | The efficiency is because we sort TUs by the abbrev table they use and | |
5736 | only read each abbrev table once. In one program there are 200K TUs | |
5737 | sharing 8K abbrev tables. | |
5738 | ||
5739 | The main purpose of this function is to support building the | |
5740 | dwarf2_per_objfile->type_unit_groups table. | |
5741 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
5742 | can collapse the search space by grouping them by stmt_list. | |
5743 | The savings can be significant, in the same program from above the 200K TUs | |
5744 | share 8K stmt_list tables. | |
5745 | ||
5746 | FUNC is expected to call get_type_unit_group, which will create the | |
5747 | struct type_unit_group if necessary and add it to | |
5748 | dwarf2_per_objfile->type_unit_groups. */ | |
5749 | ||
5750 | static void | |
5751 | build_type_unit_groups (die_reader_func_ftype *func, void *data) | |
5752 | { | |
5753 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5754 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5755 | struct cleanup *cleanups; | |
5756 | struct abbrev_table *abbrev_table; | |
5757 | sect_offset abbrev_offset; | |
5758 | struct tu_abbrev_offset *sorted_by_abbrev; | |
5759 | struct type_unit_group **iter; | |
5760 | int i; | |
5761 | ||
5762 | /* It's up to the caller to not call us multiple times. */ | |
5763 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
5764 | ||
5765 | if (dwarf2_per_objfile->n_type_units == 0) | |
5766 | return; | |
5767 | ||
5768 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
5769 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
5770 | read each abbrev table in. | |
5771 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
5772 | This is simpler and efficient enough for now. | |
5773 | ||
5774 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
5775 | symtab to use). Typically TUs with the same abbrev offset have the same | |
5776 | stmt_list value too so in practice this should work well. | |
5777 | ||
5778 | The basic algorithm here is: | |
5779 | ||
5780 | sort TUs by abbrev table | |
5781 | for each TU with same abbrev table: | |
5782 | read abbrev table if first user | |
5783 | read TU top level DIE | |
5784 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
5785 | call FUNC */ | |
5786 | ||
5787 | if (dwarf2_read_debug) | |
5788 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); | |
5789 | ||
5790 | /* Sort in a separate table to maintain the order of all_type_units | |
5791 | for .gdb_index: TU indices directly index all_type_units. */ | |
5792 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
5793 | dwarf2_per_objfile->n_type_units); | |
5794 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5795 | { | |
5796 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
5797 | ||
5798 | sorted_by_abbrev[i].sig_type = sig_type; | |
5799 | sorted_by_abbrev[i].abbrev_offset = | |
8a0459fd | 5800 | read_abbrev_offset (sig_type->per_cu.section, |
f4dc4d17 DE |
5801 | sig_type->per_cu.offset); |
5802 | } | |
5803 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
5804 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
5805 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
5806 | ||
094b34ac DE |
5807 | /* Note: In the .gdb_index case, get_type_unit_group may have already been |
5808 | called any number of times, so we don't reset tu_stats here. */ | |
5809 | ||
f4dc4d17 DE |
5810 | abbrev_offset.sect_off = ~(unsigned) 0; |
5811 | abbrev_table = NULL; | |
5812 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
5813 | ||
5814 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5815 | { | |
5816 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
5817 | ||
5818 | /* Switch to the next abbrev table if necessary. */ | |
5819 | if (abbrev_table == NULL | |
5820 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
5821 | { | |
5822 | if (abbrev_table != NULL) | |
5823 | { | |
5824 | abbrev_table_free (abbrev_table); | |
5825 | /* Reset to NULL in case abbrev_table_read_table throws | |
5826 | an error: abbrev_table_free_cleanup will get called. */ | |
5827 | abbrev_table = NULL; | |
5828 | } | |
5829 | abbrev_offset = tu->abbrev_offset; | |
5830 | abbrev_table = | |
5831 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
5832 | abbrev_offset); | |
5833 | ++tu_stats->nr_uniq_abbrev_tables; | |
5834 | } | |
5835 | ||
5836 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
5837 | func, data); | |
5838 | } | |
5839 | ||
a2ce51a0 DE |
5840 | /* type_unit_groups can be NULL if there is an error in the debug info. |
5841 | Just create an empty table so the rest of gdb doesn't have to watch | |
5842 | for this error case. */ | |
5843 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5844 | { | |
5845 | dwarf2_per_objfile->type_unit_groups = | |
5846 | allocate_type_unit_groups_table (); | |
5847 | dwarf2_per_objfile->n_type_unit_groups = 0; | |
5848 | } | |
5849 | ||
f4dc4d17 DE |
5850 | /* Create a vector of pointers to primary type units to make it easy to |
5851 | iterate over them and CUs. See dw2_get_primary_cu. */ | |
5852 | dwarf2_per_objfile->n_type_unit_groups = | |
5853 | htab_elements (dwarf2_per_objfile->type_unit_groups); | |
5854 | dwarf2_per_objfile->all_type_unit_groups = | |
5855 | obstack_alloc (&objfile->objfile_obstack, | |
5856 | dwarf2_per_objfile->n_type_unit_groups | |
5857 | * sizeof (struct type_unit_group *)); | |
5858 | iter = &dwarf2_per_objfile->all_type_unit_groups[0]; | |
5859 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5860 | add_type_unit_group_to_table, &iter); | |
5861 | gdb_assert (iter - &dwarf2_per_objfile->all_type_unit_groups[0] | |
5862 | == dwarf2_per_objfile->n_type_unit_groups); | |
5863 | ||
5864 | do_cleanups (cleanups); | |
5865 | ||
5866 | if (dwarf2_read_debug) | |
5867 | { | |
5868 | fprintf_unfiltered (gdb_stdlog, "Done building type unit groups:\n"); | |
5869 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
5870 | dwarf2_per_objfile->n_type_units); | |
5871 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
5872 | tu_stats->nr_uniq_abbrev_tables); | |
5873 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
5874 | tu_stats->nr_symtabs); | |
5875 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
5876 | tu_stats->nr_symtab_sharers); | |
5877 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
5878 | tu_stats->nr_stmt_less_type_units); | |
5879 | } | |
5880 | } | |
0018ea6f DE |
5881 | \f |
5882 | /* Partial symbol tables. */ | |
5883 | ||
5884 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5885 | ||
5886 | The caller must fill in the following details: | |
5887 | dirname, textlow, texthigh. */ | |
5888 | ||
5889 | static struct partial_symtab * | |
5890 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5891 | { | |
5892 | struct objfile *objfile = per_cu->objfile; | |
5893 | struct partial_symtab *pst; | |
5894 | ||
5895 | pst = start_psymtab_common (objfile, objfile->section_offsets, | |
5896 | name, 0, | |
5897 | objfile->global_psymbols.next, | |
5898 | objfile->static_psymbols.next); | |
5899 | ||
5900 | pst->psymtabs_addrmap_supported = 1; | |
5901 | ||
5902 | /* This is the glue that links PST into GDB's symbol API. */ | |
5903 | pst->read_symtab_private = per_cu; | |
5904 | pst->read_symtab = dwarf2_read_symtab; | |
5905 | per_cu->v.psymtab = pst; | |
5906 | ||
5907 | return pst; | |
5908 | } | |
5909 | ||
b93601f3 TT |
5910 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
5911 | type. */ | |
5912 | ||
5913 | struct process_psymtab_comp_unit_data | |
5914 | { | |
5915 | /* True if we are reading a DW_TAG_partial_unit. */ | |
5916 | ||
5917 | int want_partial_unit; | |
5918 | ||
5919 | /* The "pretend" language that is used if the CU doesn't declare a | |
5920 | language. */ | |
5921 | ||
5922 | enum language pretend_language; | |
5923 | }; | |
5924 | ||
0018ea6f DE |
5925 | /* die_reader_func for process_psymtab_comp_unit. */ |
5926 | ||
5927 | static void | |
5928 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 5929 | const gdb_byte *info_ptr, |
0018ea6f DE |
5930 | struct die_info *comp_unit_die, |
5931 | int has_children, | |
5932 | void *data) | |
5933 | { | |
5934 | struct dwarf2_cu *cu = reader->cu; | |
5935 | struct objfile *objfile = cu->objfile; | |
5936 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
5937 | struct attribute *attr; | |
5938 | CORE_ADDR baseaddr; | |
5939 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
5940 | struct partial_symtab *pst; | |
5941 | int has_pc_info; | |
5942 | const char *filename; | |
b93601f3 | 5943 | struct process_psymtab_comp_unit_data *info = data; |
0018ea6f | 5944 | |
b93601f3 | 5945 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
5946 | return; |
5947 | ||
5948 | gdb_assert (! per_cu->is_debug_types); | |
5949 | ||
b93601f3 | 5950 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
5951 | |
5952 | cu->list_in_scope = &file_symbols; | |
5953 | ||
5954 | /* Allocate a new partial symbol table structure. */ | |
5955 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
5956 | if (attr == NULL || !DW_STRING (attr)) | |
5957 | filename = ""; | |
5958 | else | |
5959 | filename = DW_STRING (attr); | |
5960 | ||
5961 | pst = create_partial_symtab (per_cu, filename); | |
5962 | ||
5963 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
5964 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5965 | if (attr != NULL) | |
5966 | pst->dirname = DW_STRING (attr); | |
5967 | ||
5968 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5969 | ||
5970 | dwarf2_find_base_address (comp_unit_die, cu); | |
5971 | ||
5972 | /* Possibly set the default values of LOWPC and HIGHPC from | |
5973 | `DW_AT_ranges'. */ | |
5974 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, | |
5975 | &best_highpc, cu, pst); | |
5976 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
5977 | /* Store the contiguous range if it is not empty; it can be empty for | |
5978 | CUs with no code. */ | |
5979 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
5980 | best_lowpc + baseaddr, | |
5981 | best_highpc + baseaddr - 1, pst); | |
5982 | ||
5983 | /* Check if comp unit has_children. | |
5984 | If so, read the rest of the partial symbols from this comp unit. | |
5985 | If not, there's no more debug_info for this comp unit. */ | |
5986 | if (has_children) | |
5987 | { | |
5988 | struct partial_die_info *first_die; | |
5989 | CORE_ADDR lowpc, highpc; | |
5990 | ||
5991 | lowpc = ((CORE_ADDR) -1); | |
5992 | highpc = ((CORE_ADDR) 0); | |
5993 | ||
5994 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5995 | ||
5996 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
5997 | ! has_pc_info, cu); | |
5998 | ||
5999 | /* If we didn't find a lowpc, set it to highpc to avoid | |
6000 | complaints from `maint check'. */ | |
6001 | if (lowpc == ((CORE_ADDR) -1)) | |
6002 | lowpc = highpc; | |
6003 | ||
6004 | /* If the compilation unit didn't have an explicit address range, | |
6005 | then use the information extracted from its child dies. */ | |
6006 | if (! has_pc_info) | |
6007 | { | |
6008 | best_lowpc = lowpc; | |
6009 | best_highpc = highpc; | |
6010 | } | |
6011 | } | |
6012 | pst->textlow = best_lowpc + baseaddr; | |
6013 | pst->texthigh = best_highpc + baseaddr; | |
6014 | ||
6015 | pst->n_global_syms = objfile->global_psymbols.next - | |
6016 | (objfile->global_psymbols.list + pst->globals_offset); | |
6017 | pst->n_static_syms = objfile->static_psymbols.next - | |
6018 | (objfile->static_psymbols.list + pst->statics_offset); | |
6019 | sort_pst_symbols (objfile, pst); | |
6020 | ||
6021 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
6022 | { | |
6023 | int i; | |
6024 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6025 | struct dwarf2_per_cu_data *iter; | |
6026 | ||
6027 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
6028 | post-pass. */ | |
6029 | pst->number_of_dependencies = len; | |
6030 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6031 | len * sizeof (struct symtab *)); | |
6032 | for (i = 0; | |
6033 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6034 | i, iter); | |
6035 | ++i) | |
6036 | pst->dependencies[i] = iter->v.psymtab; | |
6037 | ||
6038 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6039 | } | |
6040 | ||
6041 | /* Get the list of files included in the current compilation unit, | |
6042 | and build a psymtab for each of them. */ | |
6043 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
6044 | ||
6045 | if (dwarf2_read_debug) | |
6046 | { | |
6047 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6048 | ||
6049 | fprintf_unfiltered (gdb_stdlog, | |
6050 | "Psymtab for %s unit @0x%x: %s - %s" | |
6051 | ", %d global, %d static syms\n", | |
6052 | per_cu->is_debug_types ? "type" : "comp", | |
6053 | per_cu->offset.sect_off, | |
6054 | paddress (gdbarch, pst->textlow), | |
6055 | paddress (gdbarch, pst->texthigh), | |
6056 | pst->n_global_syms, pst->n_static_syms); | |
6057 | } | |
6058 | } | |
6059 | ||
6060 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6061 | Process compilation unit THIS_CU for a psymtab. */ | |
6062 | ||
6063 | static void | |
6064 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
6065 | int want_partial_unit, |
6066 | enum language pretend_language) | |
0018ea6f | 6067 | { |
b93601f3 TT |
6068 | struct process_psymtab_comp_unit_data info; |
6069 | ||
0018ea6f DE |
6070 | /* If this compilation unit was already read in, free the |
6071 | cached copy in order to read it in again. This is | |
6072 | necessary because we skipped some symbols when we first | |
6073 | read in the compilation unit (see load_partial_dies). | |
6074 | This problem could be avoided, but the benefit is unclear. */ | |
6075 | if (this_cu->cu != NULL) | |
6076 | free_one_cached_comp_unit (this_cu); | |
6077 | ||
6078 | gdb_assert (! this_cu->is_debug_types); | |
b93601f3 TT |
6079 | info.want_partial_unit = want_partial_unit; |
6080 | info.pretend_language = pretend_language; | |
0018ea6f DE |
6081 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
6082 | process_psymtab_comp_unit_reader, | |
b93601f3 | 6083 | &info); |
0018ea6f DE |
6084 | |
6085 | /* Age out any secondary CUs. */ | |
6086 | age_cached_comp_units (); | |
6087 | } | |
f4dc4d17 DE |
6088 | |
6089 | /* Reader function for build_type_psymtabs. */ | |
6090 | ||
6091 | static void | |
6092 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6093 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
6094 | struct die_info *type_unit_die, |
6095 | int has_children, | |
6096 | void *data) | |
6097 | { | |
6098 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6099 | struct dwarf2_cu *cu = reader->cu; | |
6100 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 6101 | struct signatured_type *sig_type; |
f4dc4d17 DE |
6102 | struct type_unit_group *tu_group; |
6103 | struct attribute *attr; | |
6104 | struct partial_die_info *first_die; | |
6105 | CORE_ADDR lowpc, highpc; | |
6106 | struct partial_symtab *pst; | |
6107 | ||
6108 | gdb_assert (data == NULL); | |
0186c6a7 DE |
6109 | gdb_assert (per_cu->is_debug_types); |
6110 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
6111 | |
6112 | if (! has_children) | |
6113 | return; | |
6114 | ||
6115 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 6116 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 6117 | |
0186c6a7 | 6118 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
6119 | |
6120 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
6121 | cu->list_in_scope = &file_symbols; | |
6122 | pst = create_partial_symtab (per_cu, ""); | |
6123 | pst->anonymous = 1; | |
6124 | ||
6125 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6126 | ||
6127 | lowpc = (CORE_ADDR) -1; | |
6128 | highpc = (CORE_ADDR) 0; | |
6129 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
6130 | ||
6131 | pst->n_global_syms = objfile->global_psymbols.next - | |
6132 | (objfile->global_psymbols.list + pst->globals_offset); | |
6133 | pst->n_static_syms = objfile->static_psymbols.next - | |
6134 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 6135 | sort_pst_symbols (objfile, pst); |
f4dc4d17 DE |
6136 | } |
6137 | ||
6138 | /* Traversal function for build_type_psymtabs. */ | |
6139 | ||
6140 | static int | |
6141 | build_type_psymtab_dependencies (void **slot, void *info) | |
6142 | { | |
6143 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6144 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 6145 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 6146 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
6147 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
6148 | struct signatured_type *iter; | |
f4dc4d17 DE |
6149 | int i; |
6150 | ||
6151 | gdb_assert (len > 0); | |
0186c6a7 | 6152 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
6153 | |
6154 | pst->number_of_dependencies = len; | |
6155 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6156 | len * sizeof (struct psymtab *)); | |
6157 | for (i = 0; | |
0186c6a7 | 6158 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
6159 | ++i) |
6160 | { | |
0186c6a7 DE |
6161 | gdb_assert (iter->per_cu.is_debug_types); |
6162 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 6163 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
6164 | } |
6165 | ||
0186c6a7 | 6166 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
6167 | |
6168 | return 1; | |
6169 | } | |
6170 | ||
6171 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6172 | Build partial symbol tables for the .debug_types comp-units. */ | |
6173 | ||
6174 | static void | |
6175 | build_type_psymtabs (struct objfile *objfile) | |
6176 | { | |
0e50663e | 6177 | if (! create_all_type_units (objfile)) |
348e048f DE |
6178 | return; |
6179 | ||
f4dc4d17 DE |
6180 | build_type_unit_groups (build_type_psymtabs_reader, NULL); |
6181 | ||
6182 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
6183 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
6184 | build_type_psymtab_dependencies, NULL); | |
348e048f DE |
6185 | } |
6186 | ||
60606b2c TT |
6187 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
6188 | ||
6189 | static void | |
6190 | psymtabs_addrmap_cleanup (void *o) | |
6191 | { | |
6192 | struct objfile *objfile = o; | |
ec61707d | 6193 | |
60606b2c TT |
6194 | objfile->psymtabs_addrmap = NULL; |
6195 | } | |
6196 | ||
95554aad TT |
6197 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
6198 | ||
6199 | static void | |
6200 | set_partial_user (struct objfile *objfile) | |
6201 | { | |
6202 | int i; | |
6203 | ||
6204 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
6205 | { | |
6206 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
6207 | struct partial_symtab *pst = per_cu->v.psymtab; | |
6208 | int j; | |
6209 | ||
36586728 TT |
6210 | if (pst == NULL) |
6211 | continue; | |
6212 | ||
95554aad TT |
6213 | for (j = 0; j < pst->number_of_dependencies; ++j) |
6214 | { | |
6215 | /* Set the 'user' field only if it is not already set. */ | |
6216 | if (pst->dependencies[j]->user == NULL) | |
6217 | pst->dependencies[j]->user = pst; | |
6218 | } | |
6219 | } | |
6220 | } | |
6221 | ||
93311388 DE |
6222 | /* Build the partial symbol table by doing a quick pass through the |
6223 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 6224 | |
93311388 | 6225 | static void |
c67a9c90 | 6226 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 6227 | { |
60606b2c TT |
6228 | struct cleanup *back_to, *addrmap_cleanup; |
6229 | struct obstack temp_obstack; | |
21b2bd31 | 6230 | int i; |
93311388 | 6231 | |
45cfd468 DE |
6232 | if (dwarf2_read_debug) |
6233 | { | |
6234 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 6235 | objfile_name (objfile)); |
45cfd468 DE |
6236 | } |
6237 | ||
98bfdba5 PA |
6238 | dwarf2_per_objfile->reading_partial_symbols = 1; |
6239 | ||
be391dca | 6240 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 6241 | |
93311388 DE |
6242 | /* Any cached compilation units will be linked by the per-objfile |
6243 | read_in_chain. Make sure to free them when we're done. */ | |
6244 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 6245 | |
348e048f DE |
6246 | build_type_psymtabs (objfile); |
6247 | ||
93311388 | 6248 | create_all_comp_units (objfile); |
c906108c | 6249 | |
60606b2c TT |
6250 | /* Create a temporary address map on a temporary obstack. We later |
6251 | copy this to the final obstack. */ | |
6252 | obstack_init (&temp_obstack); | |
6253 | make_cleanup_obstack_free (&temp_obstack); | |
6254 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
6255 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 6256 | |
21b2bd31 | 6257 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 6258 | { |
21b2bd31 | 6259 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 6260 | |
b93601f3 | 6261 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 6262 | } |
ff013f42 | 6263 | |
95554aad TT |
6264 | set_partial_user (objfile); |
6265 | ||
ff013f42 JK |
6266 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
6267 | &objfile->objfile_obstack); | |
60606b2c | 6268 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 6269 | |
ae038cb0 | 6270 | do_cleanups (back_to); |
45cfd468 DE |
6271 | |
6272 | if (dwarf2_read_debug) | |
6273 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
4262abfb | 6274 | objfile_name (objfile)); |
ae038cb0 DJ |
6275 | } |
6276 | ||
3019eac3 | 6277 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
6278 | |
6279 | static void | |
dee91e82 | 6280 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 6281 | const gdb_byte *info_ptr, |
dee91e82 DE |
6282 | struct die_info *comp_unit_die, |
6283 | int has_children, | |
6284 | void *data) | |
ae038cb0 | 6285 | { |
dee91e82 | 6286 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 6287 | |
95554aad | 6288 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 6289 | |
ae038cb0 DJ |
6290 | /* Check if comp unit has_children. |
6291 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 6292 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 6293 | if (has_children) |
dee91e82 DE |
6294 | load_partial_dies (reader, info_ptr, 0); |
6295 | } | |
98bfdba5 | 6296 | |
dee91e82 DE |
6297 | /* Load the partial DIEs for a secondary CU into memory. |
6298 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 6299 | |
dee91e82 DE |
6300 | static void |
6301 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
6302 | { | |
f4dc4d17 DE |
6303 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6304 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
6305 | } |
6306 | ||
ae038cb0 | 6307 | static void |
36586728 TT |
6308 | read_comp_units_from_section (struct objfile *objfile, |
6309 | struct dwarf2_section_info *section, | |
6310 | unsigned int is_dwz, | |
6311 | int *n_allocated, | |
6312 | int *n_comp_units, | |
6313 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 6314 | { |
d521ce57 | 6315 | const gdb_byte *info_ptr; |
a32a8923 | 6316 | bfd *abfd = get_section_bfd_owner (section); |
be391dca | 6317 | |
bf6af496 DE |
6318 | if (dwarf2_read_debug) |
6319 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", | |
a32a8923 DE |
6320 | get_section_name (section), |
6321 | get_section_file_name (section)); | |
bf6af496 | 6322 | |
36586728 | 6323 | dwarf2_read_section (objfile, section); |
ae038cb0 | 6324 | |
36586728 | 6325 | info_ptr = section->buffer; |
6e70227d | 6326 | |
36586728 | 6327 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 6328 | { |
c764a876 | 6329 | unsigned int length, initial_length_size; |
ae038cb0 | 6330 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 6331 | sect_offset offset; |
ae038cb0 | 6332 | |
36586728 | 6333 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
6334 | |
6335 | /* Read just enough information to find out where the next | |
6336 | compilation unit is. */ | |
36586728 | 6337 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
6338 | |
6339 | /* Save the compilation unit for later lookup. */ | |
6340 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
6341 | sizeof (struct dwarf2_per_cu_data)); | |
6342 | memset (this_cu, 0, sizeof (*this_cu)); | |
6343 | this_cu->offset = offset; | |
c764a876 | 6344 | this_cu->length = length + initial_length_size; |
36586728 | 6345 | this_cu->is_dwz = is_dwz; |
9291a0cd | 6346 | this_cu->objfile = objfile; |
8a0459fd | 6347 | this_cu->section = section; |
ae038cb0 | 6348 | |
36586728 | 6349 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 6350 | { |
36586728 TT |
6351 | *n_allocated *= 2; |
6352 | *all_comp_units = xrealloc (*all_comp_units, | |
6353 | *n_allocated | |
6354 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 6355 | } |
36586728 TT |
6356 | (*all_comp_units)[*n_comp_units] = this_cu; |
6357 | ++*n_comp_units; | |
ae038cb0 DJ |
6358 | |
6359 | info_ptr = info_ptr + this_cu->length; | |
6360 | } | |
36586728 TT |
6361 | } |
6362 | ||
6363 | /* Create a list of all compilation units in OBJFILE. | |
6364 | This is only done for -readnow and building partial symtabs. */ | |
6365 | ||
6366 | static void | |
6367 | create_all_comp_units (struct objfile *objfile) | |
6368 | { | |
6369 | int n_allocated; | |
6370 | int n_comp_units; | |
6371 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 6372 | struct dwz_file *dwz; |
36586728 TT |
6373 | |
6374 | n_comp_units = 0; | |
6375 | n_allocated = 10; | |
6376 | all_comp_units = xmalloc (n_allocated | |
6377 | * sizeof (struct dwarf2_per_cu_data *)); | |
6378 | ||
6379 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
6380 | &n_allocated, &n_comp_units, &all_comp_units); | |
6381 | ||
4db1a1dc TT |
6382 | dwz = dwarf2_get_dwz_file (); |
6383 | if (dwz != NULL) | |
6384 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
6385 | &n_allocated, &n_comp_units, | |
6386 | &all_comp_units); | |
ae038cb0 DJ |
6387 | |
6388 | dwarf2_per_objfile->all_comp_units | |
6389 | = obstack_alloc (&objfile->objfile_obstack, | |
6390 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6391 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
6392 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6393 | xfree (all_comp_units); | |
6394 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
6395 | } |
6396 | ||
5734ee8b DJ |
6397 | /* Process all loaded DIEs for compilation unit CU, starting at |
6398 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
6399 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
6400 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
6401 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
6402 | and record the covered ranges in the addrmap. */ | |
c906108c | 6403 | |
72bf9492 DJ |
6404 | static void |
6405 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 6406 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 6407 | { |
72bf9492 | 6408 | struct partial_die_info *pdi; |
c906108c | 6409 | |
91c24f0a DC |
6410 | /* Now, march along the PDI's, descending into ones which have |
6411 | interesting children but skipping the children of the other ones, | |
6412 | until we reach the end of the compilation unit. */ | |
c906108c | 6413 | |
72bf9492 | 6414 | pdi = first_die; |
91c24f0a | 6415 | |
72bf9492 DJ |
6416 | while (pdi != NULL) |
6417 | { | |
6418 | fixup_partial_die (pdi, cu); | |
c906108c | 6419 | |
f55ee35c | 6420 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
6421 | children, so we need to look at them. Ditto for anonymous |
6422 | enums. */ | |
933c6fe4 | 6423 | |
72bf9492 | 6424 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
6425 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
6426 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 6427 | { |
72bf9492 | 6428 | switch (pdi->tag) |
c906108c SS |
6429 | { |
6430 | case DW_TAG_subprogram: | |
5734ee8b | 6431 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 6432 | break; |
72929c62 | 6433 | case DW_TAG_constant: |
c906108c SS |
6434 | case DW_TAG_variable: |
6435 | case DW_TAG_typedef: | |
91c24f0a | 6436 | case DW_TAG_union_type: |
72bf9492 | 6437 | if (!pdi->is_declaration) |
63d06c5c | 6438 | { |
72bf9492 | 6439 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
6440 | } |
6441 | break; | |
c906108c | 6442 | case DW_TAG_class_type: |
680b30c7 | 6443 | case DW_TAG_interface_type: |
c906108c | 6444 | case DW_TAG_structure_type: |
72bf9492 | 6445 | if (!pdi->is_declaration) |
c906108c | 6446 | { |
72bf9492 | 6447 | add_partial_symbol (pdi, cu); |
c906108c SS |
6448 | } |
6449 | break; | |
91c24f0a | 6450 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
6451 | if (!pdi->is_declaration) |
6452 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
6453 | break; |
6454 | case DW_TAG_base_type: | |
a02abb62 | 6455 | case DW_TAG_subrange_type: |
c906108c | 6456 | /* File scope base type definitions are added to the partial |
c5aa993b | 6457 | symbol table. */ |
72bf9492 | 6458 | add_partial_symbol (pdi, cu); |
c906108c | 6459 | break; |
d9fa45fe | 6460 | case DW_TAG_namespace: |
5734ee8b | 6461 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 6462 | break; |
5d7cb8df JK |
6463 | case DW_TAG_module: |
6464 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
6465 | break; | |
95554aad TT |
6466 | case DW_TAG_imported_unit: |
6467 | { | |
6468 | struct dwarf2_per_cu_data *per_cu; | |
6469 | ||
f4dc4d17 DE |
6470 | /* For now we don't handle imported units in type units. */ |
6471 | if (cu->per_cu->is_debug_types) | |
6472 | { | |
6473 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6474 | " supported in type units [in module %s]"), | |
4262abfb | 6475 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
6476 | } |
6477 | ||
95554aad | 6478 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 6479 | pdi->is_dwz, |
95554aad TT |
6480 | cu->objfile); |
6481 | ||
6482 | /* Go read the partial unit, if needed. */ | |
6483 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 6484 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 6485 | |
f4dc4d17 | 6486 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 6487 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
6488 | } |
6489 | break; | |
c906108c SS |
6490 | default: |
6491 | break; | |
6492 | } | |
6493 | } | |
6494 | ||
72bf9492 DJ |
6495 | /* If the die has a sibling, skip to the sibling. */ |
6496 | ||
6497 | pdi = pdi->die_sibling; | |
6498 | } | |
6499 | } | |
6500 | ||
6501 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 6502 | |
72bf9492 | 6503 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
6504 | name is concatenated with "::" and the partial DIE's name. For |
6505 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
6506 | Enumerators are an exception; they use the scope of their parent |
6507 | enumeration type, i.e. the name of the enumeration type is not | |
6508 | prepended to the enumerator. | |
91c24f0a | 6509 | |
72bf9492 DJ |
6510 | There are two complexities. One is DW_AT_specification; in this |
6511 | case "parent" means the parent of the target of the specification, | |
6512 | instead of the direct parent of the DIE. The other is compilers | |
6513 | which do not emit DW_TAG_namespace; in this case we try to guess | |
6514 | the fully qualified name of structure types from their members' | |
6515 | linkage names. This must be done using the DIE's children rather | |
6516 | than the children of any DW_AT_specification target. We only need | |
6517 | to do this for structures at the top level, i.e. if the target of | |
6518 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
6519 | have a parent. */ | |
6520 | ||
6521 | /* Compute the scope prefix associated with PDI's parent, in | |
6522 | compilation unit CU. The result will be allocated on CU's | |
6523 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
6524 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 6525 | static const char * |
72bf9492 DJ |
6526 | partial_die_parent_scope (struct partial_die_info *pdi, |
6527 | struct dwarf2_cu *cu) | |
6528 | { | |
15d034d0 | 6529 | const char *grandparent_scope; |
72bf9492 | 6530 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 6531 | |
72bf9492 DJ |
6532 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
6533 | then this means the parent of the specification DIE. */ | |
6534 | ||
6535 | real_pdi = pdi; | |
72bf9492 | 6536 | while (real_pdi->has_specification) |
36586728 TT |
6537 | real_pdi = find_partial_die (real_pdi->spec_offset, |
6538 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
6539 | |
6540 | parent = real_pdi->die_parent; | |
6541 | if (parent == NULL) | |
6542 | return NULL; | |
6543 | ||
6544 | if (parent->scope_set) | |
6545 | return parent->scope; | |
6546 | ||
6547 | fixup_partial_die (parent, cu); | |
6548 | ||
10b3939b | 6549 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 6550 | |
acebe513 UW |
6551 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
6552 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
6553 | Work around this problem here. */ | |
6554 | if (cu->language == language_cplus | |
6e70227d | 6555 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
6556 | && strcmp (parent->name, "::") == 0 |
6557 | && grandparent_scope == NULL) | |
6558 | { | |
6559 | parent->scope = NULL; | |
6560 | parent->scope_set = 1; | |
6561 | return NULL; | |
6562 | } | |
6563 | ||
9c6c53f7 SA |
6564 | if (pdi->tag == DW_TAG_enumerator) |
6565 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
6566 | parent->scope = grandparent_scope; | |
6567 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 6568 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
6569 | || parent->tag == DW_TAG_structure_type |
6570 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 6571 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
6572 | || parent->tag == DW_TAG_union_type |
6573 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
6574 | { |
6575 | if (grandparent_scope == NULL) | |
6576 | parent->scope = parent->name; | |
6577 | else | |
3e43a32a MS |
6578 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
6579 | grandparent_scope, | |
f55ee35c | 6580 | parent->name, 0, cu); |
72bf9492 | 6581 | } |
72bf9492 DJ |
6582 | else |
6583 | { | |
6584 | /* FIXME drow/2004-04-01: What should we be doing with | |
6585 | function-local names? For partial symbols, we should probably be | |
6586 | ignoring them. */ | |
6587 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6588 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 6589 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 6590 | parent->scope = grandparent_scope; |
c906108c SS |
6591 | } |
6592 | ||
72bf9492 DJ |
6593 | parent->scope_set = 1; |
6594 | return parent->scope; | |
6595 | } | |
6596 | ||
6597 | /* Return the fully scoped name associated with PDI, from compilation unit | |
6598 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 6599 | |
72bf9492 DJ |
6600 | static char * |
6601 | partial_die_full_name (struct partial_die_info *pdi, | |
6602 | struct dwarf2_cu *cu) | |
6603 | { | |
15d034d0 | 6604 | const char *parent_scope; |
72bf9492 | 6605 | |
98bfdba5 PA |
6606 | /* If this is a template instantiation, we can not work out the |
6607 | template arguments from partial DIEs. So, unfortunately, we have | |
6608 | to go through the full DIEs. At least any work we do building | |
6609 | types here will be reused if full symbols are loaded later. */ | |
6610 | if (pdi->has_template_arguments) | |
6611 | { | |
6612 | fixup_partial_die (pdi, cu); | |
6613 | ||
6614 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
6615 | { | |
6616 | struct die_info *die; | |
6617 | struct attribute attr; | |
6618 | struct dwarf2_cu *ref_cu = cu; | |
6619 | ||
b64f50a1 | 6620 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
6621 | attr.name = 0; |
6622 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 6623 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
6624 | die = follow_die_ref (NULL, &attr, &ref_cu); |
6625 | ||
6626 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
6627 | } | |
6628 | } | |
6629 | ||
72bf9492 DJ |
6630 | parent_scope = partial_die_parent_scope (pdi, cu); |
6631 | if (parent_scope == NULL) | |
6632 | return NULL; | |
6633 | else | |
f55ee35c | 6634 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
6635 | } |
6636 | ||
6637 | static void | |
72bf9492 | 6638 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 6639 | { |
e7c27a73 | 6640 | struct objfile *objfile = cu->objfile; |
c906108c | 6641 | CORE_ADDR addr = 0; |
15d034d0 | 6642 | const char *actual_name = NULL; |
e142c38c | 6643 | CORE_ADDR baseaddr; |
15d034d0 | 6644 | char *built_actual_name; |
e142c38c DJ |
6645 | |
6646 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6647 | |
15d034d0 TT |
6648 | built_actual_name = partial_die_full_name (pdi, cu); |
6649 | if (built_actual_name != NULL) | |
6650 | actual_name = built_actual_name; | |
63d06c5c | 6651 | |
72bf9492 DJ |
6652 | if (actual_name == NULL) |
6653 | actual_name = pdi->name; | |
6654 | ||
c906108c SS |
6655 | switch (pdi->tag) |
6656 | { | |
6657 | case DW_TAG_subprogram: | |
2cfa0c8d | 6658 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 6659 | { |
2cfa0c8d JB |
6660 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
6661 | of the global scope. But in Ada, we want to be able to access | |
6662 | nested procedures globally. So all Ada subprograms are stored | |
6663 | in the global scope. */ | |
f47fb265 | 6664 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 6665 | mst_text, objfile); */ |
f47fb265 | 6666 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6667 | built_actual_name != NULL, |
f47fb265 MS |
6668 | VAR_DOMAIN, LOC_BLOCK, |
6669 | &objfile->global_psymbols, | |
6670 | 0, pdi->lowpc + baseaddr, | |
6671 | cu->language, objfile); | |
c906108c SS |
6672 | } |
6673 | else | |
6674 | { | |
f47fb265 | 6675 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 6676 | mst_file_text, objfile); */ |
f47fb265 | 6677 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6678 | built_actual_name != NULL, |
f47fb265 MS |
6679 | VAR_DOMAIN, LOC_BLOCK, |
6680 | &objfile->static_psymbols, | |
6681 | 0, pdi->lowpc + baseaddr, | |
6682 | cu->language, objfile); | |
c906108c SS |
6683 | } |
6684 | break; | |
72929c62 JB |
6685 | case DW_TAG_constant: |
6686 | { | |
6687 | struct psymbol_allocation_list *list; | |
6688 | ||
6689 | if (pdi->is_external) | |
6690 | list = &objfile->global_psymbols; | |
6691 | else | |
6692 | list = &objfile->static_psymbols; | |
f47fb265 | 6693 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6694 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
f47fb265 | 6695 | list, 0, 0, cu->language, objfile); |
72929c62 JB |
6696 | } |
6697 | break; | |
c906108c | 6698 | case DW_TAG_variable: |
95554aad TT |
6699 | if (pdi->d.locdesc) |
6700 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 6701 | |
95554aad | 6702 | if (pdi->d.locdesc |
caac4577 JG |
6703 | && addr == 0 |
6704 | && !dwarf2_per_objfile->has_section_at_zero) | |
6705 | { | |
6706 | /* A global or static variable may also have been stripped | |
6707 | out by the linker if unused, in which case its address | |
6708 | will be nullified; do not add such variables into partial | |
6709 | symbol table then. */ | |
6710 | } | |
6711 | else if (pdi->is_external) | |
c906108c SS |
6712 | { |
6713 | /* Global Variable. | |
6714 | Don't enter into the minimal symbol tables as there is | |
6715 | a minimal symbol table entry from the ELF symbols already. | |
6716 | Enter into partial symbol table if it has a location | |
6717 | descriptor or a type. | |
6718 | If the location descriptor is missing, new_symbol will create | |
6719 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
6720 | be determined from the minimal symbol table whenever the variable | |
6721 | is referenced. | |
6722 | The address for the partial symbol table entry is not | |
6723 | used by GDB, but it comes in handy for debugging partial symbol | |
6724 | table building. */ | |
6725 | ||
95554aad | 6726 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 6727 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6728 | built_actual_name != NULL, |
f47fb265 MS |
6729 | VAR_DOMAIN, LOC_STATIC, |
6730 | &objfile->global_psymbols, | |
6731 | 0, addr + baseaddr, | |
6732 | cu->language, objfile); | |
c906108c SS |
6733 | } |
6734 | else | |
6735 | { | |
0963b4bd | 6736 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 6737 | if (pdi->d.locdesc == NULL) |
decbce07 | 6738 | { |
15d034d0 | 6739 | xfree (built_actual_name); |
decbce07 MS |
6740 | return; |
6741 | } | |
f47fb265 | 6742 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 6743 | mst_file_data, objfile); */ |
f47fb265 | 6744 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6745 | built_actual_name != NULL, |
f47fb265 MS |
6746 | VAR_DOMAIN, LOC_STATIC, |
6747 | &objfile->static_psymbols, | |
6748 | 0, addr + baseaddr, | |
6749 | cu->language, objfile); | |
c906108c SS |
6750 | } |
6751 | break; | |
6752 | case DW_TAG_typedef: | |
6753 | case DW_TAG_base_type: | |
a02abb62 | 6754 | case DW_TAG_subrange_type: |
38d518c9 | 6755 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6756 | built_actual_name != NULL, |
176620f1 | 6757 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 6758 | &objfile->static_psymbols, |
e142c38c | 6759 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6760 | break; |
72bf9492 DJ |
6761 | case DW_TAG_namespace: |
6762 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 6763 | built_actual_name != NULL, |
72bf9492 DJ |
6764 | VAR_DOMAIN, LOC_TYPEDEF, |
6765 | &objfile->global_psymbols, | |
6766 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
6767 | break; | |
c906108c | 6768 | case DW_TAG_class_type: |
680b30c7 | 6769 | case DW_TAG_interface_type: |
c906108c SS |
6770 | case DW_TAG_structure_type: |
6771 | case DW_TAG_union_type: | |
6772 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
6773 | /* Skip external references. The DWARF standard says in the section |
6774 | about "Structure, Union, and Class Type Entries": "An incomplete | |
6775 | structure, union or class type is represented by a structure, | |
6776 | union or class entry that does not have a byte size attribute | |
6777 | and that has a DW_AT_declaration attribute." */ | |
6778 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 6779 | { |
15d034d0 | 6780 | xfree (built_actual_name); |
decbce07 MS |
6781 | return; |
6782 | } | |
fa4028e9 | 6783 | |
63d06c5c DC |
6784 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
6785 | static vs. global. */ | |
38d518c9 | 6786 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6787 | built_actual_name != NULL, |
176620f1 | 6788 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
6789 | (cu->language == language_cplus |
6790 | || cu->language == language_java) | |
63d06c5c DC |
6791 | ? &objfile->global_psymbols |
6792 | : &objfile->static_psymbols, | |
e142c38c | 6793 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6794 | |
c906108c SS |
6795 | break; |
6796 | case DW_TAG_enumerator: | |
38d518c9 | 6797 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6798 | built_actual_name != NULL, |
176620f1 | 6799 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
6800 | (cu->language == language_cplus |
6801 | || cu->language == language_java) | |
f6fe98ef DJ |
6802 | ? &objfile->global_psymbols |
6803 | : &objfile->static_psymbols, | |
e142c38c | 6804 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
6805 | break; |
6806 | default: | |
6807 | break; | |
6808 | } | |
5c4e30ca | 6809 | |
15d034d0 | 6810 | xfree (built_actual_name); |
c906108c SS |
6811 | } |
6812 | ||
5c4e30ca DC |
6813 | /* Read a partial die corresponding to a namespace; also, add a symbol |
6814 | corresponding to that namespace to the symbol table. NAMESPACE is | |
6815 | the name of the enclosing namespace. */ | |
91c24f0a | 6816 | |
72bf9492 DJ |
6817 | static void |
6818 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 6819 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 6820 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 6821 | { |
72bf9492 | 6822 | /* Add a symbol for the namespace. */ |
e7c27a73 | 6823 | |
72bf9492 | 6824 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
6825 | |
6826 | /* Now scan partial symbols in that namespace. */ | |
6827 | ||
91c24f0a | 6828 | if (pdi->has_children) |
5734ee8b | 6829 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
6830 | } |
6831 | ||
5d7cb8df JK |
6832 | /* Read a partial die corresponding to a Fortran module. */ |
6833 | ||
6834 | static void | |
6835 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
6836 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
6837 | { | |
f55ee35c | 6838 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
6839 | |
6840 | if (pdi->has_children) | |
6841 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
6842 | } | |
6843 | ||
bc30ff58 JB |
6844 | /* Read a partial die corresponding to a subprogram and create a partial |
6845 | symbol for that subprogram. When the CU language allows it, this | |
6846 | routine also defines a partial symbol for each nested subprogram | |
6847 | that this subprogram contains. | |
6e70227d | 6848 | |
bc30ff58 JB |
6849 | DIE my also be a lexical block, in which case we simply search |
6850 | recursively for suprograms defined inside that lexical block. | |
6851 | Again, this is only performed when the CU language allows this | |
6852 | type of definitions. */ | |
6853 | ||
6854 | static void | |
6855 | add_partial_subprogram (struct partial_die_info *pdi, | |
6856 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 6857 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
6858 | { |
6859 | if (pdi->tag == DW_TAG_subprogram) | |
6860 | { | |
6861 | if (pdi->has_pc_info) | |
6862 | { | |
6863 | if (pdi->lowpc < *lowpc) | |
6864 | *lowpc = pdi->lowpc; | |
6865 | if (pdi->highpc > *highpc) | |
6866 | *highpc = pdi->highpc; | |
5734ee8b DJ |
6867 | if (need_pc) |
6868 | { | |
6869 | CORE_ADDR baseaddr; | |
6870 | struct objfile *objfile = cu->objfile; | |
6871 | ||
6872 | baseaddr = ANOFFSET (objfile->section_offsets, | |
6873 | SECT_OFF_TEXT (objfile)); | |
6874 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
6875 | pdi->lowpc + baseaddr, |
6876 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 6877 | cu->per_cu->v.psymtab); |
5734ee8b | 6878 | } |
481860b3 GB |
6879 | } |
6880 | ||
6881 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
6882 | { | |
bc30ff58 | 6883 | if (!pdi->is_declaration) |
e8d05480 JB |
6884 | /* Ignore subprogram DIEs that do not have a name, they are |
6885 | illegal. Do not emit a complaint at this point, we will | |
6886 | do so when we convert this psymtab into a symtab. */ | |
6887 | if (pdi->name) | |
6888 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
6889 | } |
6890 | } | |
6e70227d | 6891 | |
bc30ff58 JB |
6892 | if (! pdi->has_children) |
6893 | return; | |
6894 | ||
6895 | if (cu->language == language_ada) | |
6896 | { | |
6897 | pdi = pdi->die_child; | |
6898 | while (pdi != NULL) | |
6899 | { | |
6900 | fixup_partial_die (pdi, cu); | |
6901 | if (pdi->tag == DW_TAG_subprogram | |
6902 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 6903 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
6904 | pdi = pdi->die_sibling; |
6905 | } | |
6906 | } | |
6907 | } | |
6908 | ||
91c24f0a DC |
6909 | /* Read a partial die corresponding to an enumeration type. */ |
6910 | ||
72bf9492 DJ |
6911 | static void |
6912 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
6913 | struct dwarf2_cu *cu) | |
91c24f0a | 6914 | { |
72bf9492 | 6915 | struct partial_die_info *pdi; |
91c24f0a DC |
6916 | |
6917 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
6918 | add_partial_symbol (enum_pdi, cu); |
6919 | ||
6920 | pdi = enum_pdi->die_child; | |
6921 | while (pdi) | |
91c24f0a | 6922 | { |
72bf9492 | 6923 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 6924 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 6925 | else |
72bf9492 DJ |
6926 | add_partial_symbol (pdi, cu); |
6927 | pdi = pdi->die_sibling; | |
91c24f0a | 6928 | } |
91c24f0a DC |
6929 | } |
6930 | ||
6caca83c CC |
6931 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
6932 | ||
6933 | static unsigned int | |
d521ce57 | 6934 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
6935 | { |
6936 | unsigned int bytes_read; | |
6937 | ||
6938 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6939 | } | |
6940 | ||
4bb7a0a7 DJ |
6941 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
6942 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
6943 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
6944 | the initial number. */ | |
6945 | ||
6946 | static struct abbrev_info * | |
d521ce57 | 6947 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 6948 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
6949 | { |
6950 | bfd *abfd = cu->objfile->obfd; | |
6951 | unsigned int abbrev_number; | |
6952 | struct abbrev_info *abbrev; | |
6953 | ||
6954 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
6955 | ||
6956 | if (abbrev_number == 0) | |
6957 | return NULL; | |
6958 | ||
433df2d4 | 6959 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
6960 | if (!abbrev) |
6961 | { | |
3e43a32a MS |
6962 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
6963 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
6964 | } |
6965 | ||
6966 | return abbrev; | |
6967 | } | |
6968 | ||
93311388 DE |
6969 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6970 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
6971 | DIE. Any children of the skipped DIEs will also be skipped. */ |
6972 | ||
d521ce57 TT |
6973 | static const gdb_byte * |
6974 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 6975 | { |
dee91e82 | 6976 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
6977 | struct abbrev_info *abbrev; |
6978 | unsigned int bytes_read; | |
6979 | ||
6980 | while (1) | |
6981 | { | |
6982 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
6983 | if (abbrev == NULL) | |
6984 | return info_ptr + bytes_read; | |
6985 | else | |
dee91e82 | 6986 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
6987 | } |
6988 | } | |
6989 | ||
93311388 DE |
6990 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6991 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
6992 | abbrev corresponding to that skipped uleb128 should be passed in |
6993 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
6994 | children. */ | |
6995 | ||
d521ce57 TT |
6996 | static const gdb_byte * |
6997 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 6998 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
6999 | { |
7000 | unsigned int bytes_read; | |
7001 | struct attribute attr; | |
dee91e82 DE |
7002 | bfd *abfd = reader->abfd; |
7003 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 7004 | const gdb_byte *buffer = reader->buffer; |
f664829e | 7005 | const gdb_byte *buffer_end = reader->buffer_end; |
d521ce57 | 7006 | const gdb_byte *start_info_ptr = info_ptr; |
4bb7a0a7 DJ |
7007 | unsigned int form, i; |
7008 | ||
7009 | for (i = 0; i < abbrev->num_attrs; i++) | |
7010 | { | |
7011 | /* The only abbrev we care about is DW_AT_sibling. */ | |
7012 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
7013 | { | |
dee91e82 | 7014 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 7015 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
7016 | complaint (&symfile_complaints, |
7017 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 7018 | else |
b64f50a1 | 7019 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
7020 | } |
7021 | ||
7022 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
7023 | form = abbrev->attrs[i].form; | |
7024 | skip_attribute: | |
7025 | switch (form) | |
7026 | { | |
4bb7a0a7 | 7027 | case DW_FORM_ref_addr: |
ae411497 TT |
7028 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
7029 | and later it is offset sized. */ | |
7030 | if (cu->header.version == 2) | |
7031 | info_ptr += cu->header.addr_size; | |
7032 | else | |
7033 | info_ptr += cu->header.offset_size; | |
7034 | break; | |
36586728 TT |
7035 | case DW_FORM_GNU_ref_alt: |
7036 | info_ptr += cu->header.offset_size; | |
7037 | break; | |
ae411497 | 7038 | case DW_FORM_addr: |
4bb7a0a7 DJ |
7039 | info_ptr += cu->header.addr_size; |
7040 | break; | |
7041 | case DW_FORM_data1: | |
7042 | case DW_FORM_ref1: | |
7043 | case DW_FORM_flag: | |
7044 | info_ptr += 1; | |
7045 | break; | |
2dc7f7b3 TT |
7046 | case DW_FORM_flag_present: |
7047 | break; | |
4bb7a0a7 DJ |
7048 | case DW_FORM_data2: |
7049 | case DW_FORM_ref2: | |
7050 | info_ptr += 2; | |
7051 | break; | |
7052 | case DW_FORM_data4: | |
7053 | case DW_FORM_ref4: | |
7054 | info_ptr += 4; | |
7055 | break; | |
7056 | case DW_FORM_data8: | |
7057 | case DW_FORM_ref8: | |
55f1336d | 7058 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
7059 | info_ptr += 8; |
7060 | break; | |
7061 | case DW_FORM_string: | |
9b1c24c8 | 7062 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
7063 | info_ptr += bytes_read; |
7064 | break; | |
2dc7f7b3 | 7065 | case DW_FORM_sec_offset: |
4bb7a0a7 | 7066 | case DW_FORM_strp: |
36586728 | 7067 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
7068 | info_ptr += cu->header.offset_size; |
7069 | break; | |
2dc7f7b3 | 7070 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
7071 | case DW_FORM_block: |
7072 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7073 | info_ptr += bytes_read; | |
7074 | break; | |
7075 | case DW_FORM_block1: | |
7076 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
7077 | break; | |
7078 | case DW_FORM_block2: | |
7079 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
7080 | break; | |
7081 | case DW_FORM_block4: | |
7082 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
7083 | break; | |
7084 | case DW_FORM_sdata: | |
7085 | case DW_FORM_udata: | |
7086 | case DW_FORM_ref_udata: | |
3019eac3 DE |
7087 | case DW_FORM_GNU_addr_index: |
7088 | case DW_FORM_GNU_str_index: | |
d521ce57 | 7089 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
7090 | break; |
7091 | case DW_FORM_indirect: | |
7092 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7093 | info_ptr += bytes_read; | |
7094 | /* We need to continue parsing from here, so just go back to | |
7095 | the top. */ | |
7096 | goto skip_attribute; | |
7097 | ||
7098 | default: | |
3e43a32a MS |
7099 | error (_("Dwarf Error: Cannot handle %s " |
7100 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
7101 | dwarf_form_name (form), |
7102 | bfd_get_filename (abfd)); | |
7103 | } | |
7104 | } | |
7105 | ||
7106 | if (abbrev->has_children) | |
dee91e82 | 7107 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
7108 | else |
7109 | return info_ptr; | |
7110 | } | |
7111 | ||
93311388 | 7112 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 7113 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 7114 | |
d521ce57 | 7115 | static const gdb_byte * |
dee91e82 DE |
7116 | locate_pdi_sibling (const struct die_reader_specs *reader, |
7117 | struct partial_die_info *orig_pdi, | |
d521ce57 | 7118 | const gdb_byte *info_ptr) |
91c24f0a DC |
7119 | { |
7120 | /* Do we know the sibling already? */ | |
72bf9492 | 7121 | |
91c24f0a DC |
7122 | if (orig_pdi->sibling) |
7123 | return orig_pdi->sibling; | |
7124 | ||
7125 | /* Are there any children to deal with? */ | |
7126 | ||
7127 | if (!orig_pdi->has_children) | |
7128 | return info_ptr; | |
7129 | ||
4bb7a0a7 | 7130 | /* Skip the children the long way. */ |
91c24f0a | 7131 | |
dee91e82 | 7132 | return skip_children (reader, info_ptr); |
91c24f0a DC |
7133 | } |
7134 | ||
257e7a09 | 7135 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 7136 | not NULL. */ |
c906108c SS |
7137 | |
7138 | static void | |
257e7a09 YQ |
7139 | dwarf2_read_symtab (struct partial_symtab *self, |
7140 | struct objfile *objfile) | |
c906108c | 7141 | { |
257e7a09 | 7142 | if (self->readin) |
c906108c | 7143 | { |
442e4d9c | 7144 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 7145 | self->filename); |
442e4d9c YQ |
7146 | } |
7147 | else | |
7148 | { | |
7149 | if (info_verbose) | |
c906108c | 7150 | { |
442e4d9c | 7151 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 7152 | self->filename); |
442e4d9c | 7153 | gdb_flush (gdb_stdout); |
c906108c | 7154 | } |
c906108c | 7155 | |
442e4d9c YQ |
7156 | /* Restore our global data. */ |
7157 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10b3939b | 7158 | |
442e4d9c YQ |
7159 | /* If this psymtab is constructed from a debug-only objfile, the |
7160 | has_section_at_zero flag will not necessarily be correct. We | |
7161 | can get the correct value for this flag by looking at the data | |
7162 | associated with the (presumably stripped) associated objfile. */ | |
7163 | if (objfile->separate_debug_objfile_backlink) | |
7164 | { | |
7165 | struct dwarf2_per_objfile *dpo_backlink | |
7166 | = objfile_data (objfile->separate_debug_objfile_backlink, | |
7167 | dwarf2_objfile_data_key); | |
9a619af0 | 7168 | |
442e4d9c YQ |
7169 | dwarf2_per_objfile->has_section_at_zero |
7170 | = dpo_backlink->has_section_at_zero; | |
7171 | } | |
b2ab525c | 7172 | |
442e4d9c | 7173 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 7174 | |
257e7a09 | 7175 | psymtab_to_symtab_1 (self); |
c906108c | 7176 | |
442e4d9c YQ |
7177 | /* Finish up the debug error message. */ |
7178 | if (info_verbose) | |
7179 | printf_filtered (_("done.\n")); | |
c906108c | 7180 | } |
95554aad TT |
7181 | |
7182 | process_cu_includes (); | |
c906108c | 7183 | } |
9cdd5dbd DE |
7184 | \f |
7185 | /* Reading in full CUs. */ | |
c906108c | 7186 | |
10b3939b DJ |
7187 | /* Add PER_CU to the queue. */ |
7188 | ||
7189 | static void | |
95554aad TT |
7190 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7191 | enum language pretend_language) | |
10b3939b DJ |
7192 | { |
7193 | struct dwarf2_queue_item *item; | |
7194 | ||
7195 | per_cu->queued = 1; | |
7196 | item = xmalloc (sizeof (*item)); | |
7197 | item->per_cu = per_cu; | |
95554aad | 7198 | item->pretend_language = pretend_language; |
10b3939b DJ |
7199 | item->next = NULL; |
7200 | ||
7201 | if (dwarf2_queue == NULL) | |
7202 | dwarf2_queue = item; | |
7203 | else | |
7204 | dwarf2_queue_tail->next = item; | |
7205 | ||
7206 | dwarf2_queue_tail = item; | |
7207 | } | |
7208 | ||
89e63ee4 DE |
7209 | /* If PER_CU is not yet queued, add it to the queue. |
7210 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
7211 | dependency. | |
0907af0c | 7212 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
7213 | meaning either PER_CU is already queued or it is already loaded. |
7214 | ||
7215 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
7216 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
7217 | |
7218 | static int | |
89e63ee4 | 7219 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
7220 | struct dwarf2_per_cu_data *per_cu, |
7221 | enum language pretend_language) | |
7222 | { | |
7223 | /* We may arrive here during partial symbol reading, if we need full | |
7224 | DIEs to process an unusual case (e.g. template arguments). Do | |
7225 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
7226 | if (dwarf2_per_objfile->reading_partial_symbols) | |
7227 | { | |
7228 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
7229 | return 1; | |
7230 | return 0; | |
7231 | } | |
7232 | ||
7233 | /* Mark the dependence relation so that we don't flush PER_CU | |
7234 | too early. */ | |
89e63ee4 DE |
7235 | if (dependent_cu != NULL) |
7236 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
7237 | |
7238 | /* If it's already on the queue, we have nothing to do. */ | |
7239 | if (per_cu->queued) | |
7240 | return 0; | |
7241 | ||
7242 | /* If the compilation unit is already loaded, just mark it as | |
7243 | used. */ | |
7244 | if (per_cu->cu != NULL) | |
7245 | { | |
7246 | per_cu->cu->last_used = 0; | |
7247 | return 0; | |
7248 | } | |
7249 | ||
7250 | /* Add it to the queue. */ | |
7251 | queue_comp_unit (per_cu, pretend_language); | |
7252 | ||
7253 | return 1; | |
7254 | } | |
7255 | ||
10b3939b DJ |
7256 | /* Process the queue. */ |
7257 | ||
7258 | static void | |
a0f42c21 | 7259 | process_queue (void) |
10b3939b DJ |
7260 | { |
7261 | struct dwarf2_queue_item *item, *next_item; | |
7262 | ||
45cfd468 DE |
7263 | if (dwarf2_read_debug) |
7264 | { | |
7265 | fprintf_unfiltered (gdb_stdlog, | |
7266 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 7267 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
7268 | } |
7269 | ||
03dd20cc DJ |
7270 | /* The queue starts out with one item, but following a DIE reference |
7271 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
7272 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
7273 | { | |
9291a0cd TT |
7274 | if (dwarf2_per_objfile->using_index |
7275 | ? !item->per_cu->v.quick->symtab | |
7276 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
f4dc4d17 DE |
7277 | { |
7278 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
247f5c4f | 7279 | char buf[100]; |
f4dc4d17 | 7280 | |
247f5c4f | 7281 | if (per_cu->is_debug_types) |
f4dc4d17 | 7282 | { |
247f5c4f DE |
7283 | struct signatured_type *sig_type = |
7284 | (struct signatured_type *) per_cu; | |
7285 | ||
7286 | sprintf (buf, "TU %s at offset 0x%x", | |
7287 | hex_string (sig_type->signature), per_cu->offset.sect_off); | |
f4dc4d17 | 7288 | } |
247f5c4f DE |
7289 | else |
7290 | sprintf (buf, "CU at offset 0x%x", per_cu->offset.sect_off); | |
7291 | ||
7292 | if (dwarf2_read_debug) | |
7293 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); | |
f4dc4d17 DE |
7294 | |
7295 | if (per_cu->is_debug_types) | |
7296 | process_full_type_unit (per_cu, item->pretend_language); | |
7297 | else | |
7298 | process_full_comp_unit (per_cu, item->pretend_language); | |
7299 | ||
7300 | if (dwarf2_read_debug) | |
247f5c4f | 7301 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 7302 | } |
10b3939b DJ |
7303 | |
7304 | item->per_cu->queued = 0; | |
7305 | next_item = item->next; | |
7306 | xfree (item); | |
7307 | } | |
7308 | ||
7309 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
7310 | |
7311 | if (dwarf2_read_debug) | |
7312 | { | |
7313 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 7314 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 7315 | } |
10b3939b DJ |
7316 | } |
7317 | ||
7318 | /* Free all allocated queue entries. This function only releases anything if | |
7319 | an error was thrown; if the queue was processed then it would have been | |
7320 | freed as we went along. */ | |
7321 | ||
7322 | static void | |
7323 | dwarf2_release_queue (void *dummy) | |
7324 | { | |
7325 | struct dwarf2_queue_item *item, *last; | |
7326 | ||
7327 | item = dwarf2_queue; | |
7328 | while (item) | |
7329 | { | |
7330 | /* Anything still marked queued is likely to be in an | |
7331 | inconsistent state, so discard it. */ | |
7332 | if (item->per_cu->queued) | |
7333 | { | |
7334 | if (item->per_cu->cu != NULL) | |
dee91e82 | 7335 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
7336 | item->per_cu->queued = 0; |
7337 | } | |
7338 | ||
7339 | last = item; | |
7340 | item = item->next; | |
7341 | xfree (last); | |
7342 | } | |
7343 | ||
7344 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
7345 | } | |
7346 | ||
7347 | /* Read in full symbols for PST, and anything it depends on. */ | |
7348 | ||
c906108c | 7349 | static void |
fba45db2 | 7350 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 7351 | { |
10b3939b | 7352 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
7353 | int i; |
7354 | ||
95554aad TT |
7355 | if (pst->readin) |
7356 | return; | |
7357 | ||
aaa75496 | 7358 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
7359 | if (!pst->dependencies[i]->readin |
7360 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
7361 | { |
7362 | /* Inform about additional files that need to be read in. */ | |
7363 | if (info_verbose) | |
7364 | { | |
a3f17187 | 7365 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
7366 | fputs_filtered (" ", gdb_stdout); |
7367 | wrap_here (""); | |
7368 | fputs_filtered ("and ", gdb_stdout); | |
7369 | wrap_here (""); | |
7370 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 7371 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
7372 | gdb_flush (gdb_stdout); |
7373 | } | |
7374 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
7375 | } | |
7376 | ||
e38df1d0 | 7377 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
7378 | |
7379 | if (per_cu == NULL) | |
aaa75496 JB |
7380 | { |
7381 | /* It's an include file, no symbols to read for it. | |
7382 | Everything is in the parent symtab. */ | |
7383 | pst->readin = 1; | |
7384 | return; | |
7385 | } | |
c906108c | 7386 | |
a0f42c21 | 7387 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
7388 | } |
7389 | ||
dee91e82 DE |
7390 | /* Trivial hash function for die_info: the hash value of a DIE |
7391 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 7392 | |
dee91e82 DE |
7393 | static hashval_t |
7394 | die_hash (const void *item) | |
10b3939b | 7395 | { |
dee91e82 | 7396 | const struct die_info *die = item; |
6502dd73 | 7397 | |
dee91e82 DE |
7398 | return die->offset.sect_off; |
7399 | } | |
63d06c5c | 7400 | |
dee91e82 DE |
7401 | /* Trivial comparison function for die_info structures: two DIEs |
7402 | are equal if they have the same offset. */ | |
98bfdba5 | 7403 | |
dee91e82 DE |
7404 | static int |
7405 | die_eq (const void *item_lhs, const void *item_rhs) | |
7406 | { | |
7407 | const struct die_info *die_lhs = item_lhs; | |
7408 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 7409 | |
dee91e82 DE |
7410 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
7411 | } | |
c906108c | 7412 | |
dee91e82 DE |
7413 | /* die_reader_func for load_full_comp_unit. |
7414 | This is identical to read_signatured_type_reader, | |
7415 | but is kept separate for now. */ | |
c906108c | 7416 | |
dee91e82 DE |
7417 | static void |
7418 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7419 | const gdb_byte *info_ptr, |
dee91e82 DE |
7420 | struct die_info *comp_unit_die, |
7421 | int has_children, | |
7422 | void *data) | |
7423 | { | |
7424 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 7425 | enum language *language_ptr = data; |
6caca83c | 7426 | |
dee91e82 DE |
7427 | gdb_assert (cu->die_hash == NULL); |
7428 | cu->die_hash = | |
7429 | htab_create_alloc_ex (cu->header.length / 12, | |
7430 | die_hash, | |
7431 | die_eq, | |
7432 | NULL, | |
7433 | &cu->comp_unit_obstack, | |
7434 | hashtab_obstack_allocate, | |
7435 | dummy_obstack_deallocate); | |
e142c38c | 7436 | |
dee91e82 DE |
7437 | if (has_children) |
7438 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
7439 | &info_ptr, comp_unit_die); | |
7440 | cu->dies = comp_unit_die; | |
7441 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
7442 | |
7443 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 7444 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 7445 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
7446 | or we won't be able to build types correctly. |
7447 | Similarly, if we do not read the producer, we can not apply | |
7448 | producer-specific interpretation. */ | |
95554aad | 7449 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 7450 | } |
10b3939b | 7451 | |
dee91e82 | 7452 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 7453 | |
dee91e82 | 7454 | static void |
95554aad TT |
7455 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
7456 | enum language pretend_language) | |
dee91e82 | 7457 | { |
3019eac3 | 7458 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 7459 | |
f4dc4d17 DE |
7460 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
7461 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
7462 | } |
7463 | ||
3da10d80 KS |
7464 | /* Add a DIE to the delayed physname list. */ |
7465 | ||
7466 | static void | |
7467 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
7468 | const char *name, struct die_info *die, | |
7469 | struct dwarf2_cu *cu) | |
7470 | { | |
7471 | struct delayed_method_info mi; | |
7472 | mi.type = type; | |
7473 | mi.fnfield_index = fnfield_index; | |
7474 | mi.index = index; | |
7475 | mi.name = name; | |
7476 | mi.die = die; | |
7477 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
7478 | } | |
7479 | ||
7480 | /* A cleanup for freeing the delayed method list. */ | |
7481 | ||
7482 | static void | |
7483 | free_delayed_list (void *ptr) | |
7484 | { | |
7485 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
7486 | if (cu->method_list != NULL) | |
7487 | { | |
7488 | VEC_free (delayed_method_info, cu->method_list); | |
7489 | cu->method_list = NULL; | |
7490 | } | |
7491 | } | |
7492 | ||
7493 | /* Compute the physnames of any methods on the CU's method list. | |
7494 | ||
7495 | The computation of method physnames is delayed in order to avoid the | |
7496 | (bad) condition that one of the method's formal parameters is of an as yet | |
7497 | incomplete type. */ | |
7498 | ||
7499 | static void | |
7500 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
7501 | { | |
7502 | int i; | |
7503 | struct delayed_method_info *mi; | |
7504 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
7505 | { | |
1d06ead6 | 7506 | const char *physname; |
3da10d80 KS |
7507 | struct fn_fieldlist *fn_flp |
7508 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 7509 | physname = dwarf2_physname (mi->name, mi->die, cu); |
3da10d80 KS |
7510 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
7511 | } | |
7512 | } | |
7513 | ||
a766d390 DE |
7514 | /* Go objects should be embedded in a DW_TAG_module DIE, |
7515 | and it's not clear if/how imported objects will appear. | |
7516 | To keep Go support simple until that's worked out, | |
7517 | go back through what we've read and create something usable. | |
7518 | We could do this while processing each DIE, and feels kinda cleaner, | |
7519 | but that way is more invasive. | |
7520 | This is to, for example, allow the user to type "p var" or "b main" | |
7521 | without having to specify the package name, and allow lookups | |
7522 | of module.object to work in contexts that use the expression | |
7523 | parser. */ | |
7524 | ||
7525 | static void | |
7526 | fixup_go_packaging (struct dwarf2_cu *cu) | |
7527 | { | |
7528 | char *package_name = NULL; | |
7529 | struct pending *list; | |
7530 | int i; | |
7531 | ||
7532 | for (list = global_symbols; list != NULL; list = list->next) | |
7533 | { | |
7534 | for (i = 0; i < list->nsyms; ++i) | |
7535 | { | |
7536 | struct symbol *sym = list->symbol[i]; | |
7537 | ||
7538 | if (SYMBOL_LANGUAGE (sym) == language_go | |
7539 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
7540 | { | |
7541 | char *this_package_name = go_symbol_package_name (sym); | |
7542 | ||
7543 | if (this_package_name == NULL) | |
7544 | continue; | |
7545 | if (package_name == NULL) | |
7546 | package_name = this_package_name; | |
7547 | else | |
7548 | { | |
7549 | if (strcmp (package_name, this_package_name) != 0) | |
7550 | complaint (&symfile_complaints, | |
7551 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
210bbc17 | 7552 | (SYMBOL_SYMTAB (sym) |
05cba821 | 7553 | ? symtab_to_filename_for_display (SYMBOL_SYMTAB (sym)) |
4262abfb | 7554 | : objfile_name (cu->objfile)), |
a766d390 DE |
7555 | this_package_name, package_name); |
7556 | xfree (this_package_name); | |
7557 | } | |
7558 | } | |
7559 | } | |
7560 | } | |
7561 | ||
7562 | if (package_name != NULL) | |
7563 | { | |
7564 | struct objfile *objfile = cu->objfile; | |
10f0c4bb TT |
7565 | const char *saved_package_name = obstack_copy0 (&objfile->objfile_obstack, |
7566 | package_name, | |
7567 | strlen (package_name)); | |
a766d390 | 7568 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, |
86f62fd7 | 7569 | saved_package_name, objfile); |
a766d390 DE |
7570 | struct symbol *sym; |
7571 | ||
7572 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7573 | ||
e623cf5d | 7574 | sym = allocate_symbol (objfile); |
f85f34ed | 7575 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
7576 | SYMBOL_SET_NAMES (sym, saved_package_name, |
7577 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
7578 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
7579 | e.g., "main" finds the "main" module and not C's main(). */ | |
7580 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 7581 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
7582 | SYMBOL_TYPE (sym) = type; |
7583 | ||
7584 | add_symbol_to_list (sym, &global_symbols); | |
7585 | ||
7586 | xfree (package_name); | |
7587 | } | |
7588 | } | |
7589 | ||
95554aad TT |
7590 | /* Return the symtab for PER_CU. This works properly regardless of |
7591 | whether we're using the index or psymtabs. */ | |
7592 | ||
7593 | static struct symtab * | |
7594 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
7595 | { | |
7596 | return (dwarf2_per_objfile->using_index | |
7597 | ? per_cu->v.quick->symtab | |
7598 | : per_cu->v.psymtab->symtab); | |
7599 | } | |
7600 | ||
7601 | /* A helper function for computing the list of all symbol tables | |
7602 | included by PER_CU. */ | |
7603 | ||
7604 | static void | |
ec94af83 DE |
7605 | recursively_compute_inclusions (VEC (symtab_ptr) **result, |
7606 | htab_t all_children, htab_t all_type_symtabs, | |
f9125b6c TT |
7607 | struct dwarf2_per_cu_data *per_cu, |
7608 | struct symtab *immediate_parent) | |
95554aad TT |
7609 | { |
7610 | void **slot; | |
7611 | int ix; | |
ec94af83 | 7612 | struct symtab *symtab; |
95554aad TT |
7613 | struct dwarf2_per_cu_data *iter; |
7614 | ||
7615 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
7616 | if (*slot != NULL) | |
7617 | { | |
7618 | /* This inclusion and its children have been processed. */ | |
7619 | return; | |
7620 | } | |
7621 | ||
7622 | *slot = per_cu; | |
7623 | /* Only add a CU if it has a symbol table. */ | |
ec94af83 DE |
7624 | symtab = get_symtab (per_cu); |
7625 | if (symtab != NULL) | |
7626 | { | |
7627 | /* If this is a type unit only add its symbol table if we haven't | |
7628 | seen it yet (type unit per_cu's can share symtabs). */ | |
7629 | if (per_cu->is_debug_types) | |
7630 | { | |
7631 | slot = htab_find_slot (all_type_symtabs, symtab, INSERT); | |
7632 | if (*slot == NULL) | |
7633 | { | |
7634 | *slot = symtab; | |
7635 | VEC_safe_push (symtab_ptr, *result, symtab); | |
f9125b6c TT |
7636 | if (symtab->user == NULL) |
7637 | symtab->user = immediate_parent; | |
ec94af83 DE |
7638 | } |
7639 | } | |
7640 | else | |
f9125b6c TT |
7641 | { |
7642 | VEC_safe_push (symtab_ptr, *result, symtab); | |
7643 | if (symtab->user == NULL) | |
7644 | symtab->user = immediate_parent; | |
7645 | } | |
ec94af83 | 7646 | } |
95554aad TT |
7647 | |
7648 | for (ix = 0; | |
796a7ff8 | 7649 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 7650 | ++ix) |
ec94af83 DE |
7651 | { |
7652 | recursively_compute_inclusions (result, all_children, | |
f9125b6c | 7653 | all_type_symtabs, iter, symtab); |
ec94af83 | 7654 | } |
95554aad TT |
7655 | } |
7656 | ||
7657 | /* Compute the symtab 'includes' fields for the symtab related to | |
7658 | PER_CU. */ | |
7659 | ||
7660 | static void | |
7661 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
7662 | { | |
f4dc4d17 DE |
7663 | gdb_assert (! per_cu->is_debug_types); |
7664 | ||
796a7ff8 | 7665 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
7666 | { |
7667 | int ix, len; | |
ec94af83 DE |
7668 | struct dwarf2_per_cu_data *per_cu_iter; |
7669 | struct symtab *symtab_iter; | |
7670 | VEC (symtab_ptr) *result_symtabs = NULL; | |
7671 | htab_t all_children, all_type_symtabs; | |
95554aad TT |
7672 | struct symtab *symtab = get_symtab (per_cu); |
7673 | ||
7674 | /* If we don't have a symtab, we can just skip this case. */ | |
7675 | if (symtab == NULL) | |
7676 | return; | |
7677 | ||
7678 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
7679 | NULL, xcalloc, xfree); | |
ec94af83 DE |
7680 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
7681 | NULL, xcalloc, xfree); | |
95554aad TT |
7682 | |
7683 | for (ix = 0; | |
796a7ff8 | 7684 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 7685 | ix, per_cu_iter); |
95554aad | 7686 | ++ix) |
ec94af83 DE |
7687 | { |
7688 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c TT |
7689 | all_type_symtabs, per_cu_iter, |
7690 | symtab); | |
ec94af83 | 7691 | } |
95554aad | 7692 | |
ec94af83 DE |
7693 | /* Now we have a transitive closure of all the included symtabs. */ |
7694 | len = VEC_length (symtab_ptr, result_symtabs); | |
95554aad TT |
7695 | symtab->includes |
7696 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
7697 | (len + 1) * sizeof (struct symtab *)); | |
7698 | for (ix = 0; | |
ec94af83 | 7699 | VEC_iterate (symtab_ptr, result_symtabs, ix, symtab_iter); |
95554aad | 7700 | ++ix) |
ec94af83 | 7701 | symtab->includes[ix] = symtab_iter; |
95554aad TT |
7702 | symtab->includes[len] = NULL; |
7703 | ||
ec94af83 | 7704 | VEC_free (symtab_ptr, result_symtabs); |
95554aad | 7705 | htab_delete (all_children); |
ec94af83 | 7706 | htab_delete (all_type_symtabs); |
95554aad TT |
7707 | } |
7708 | } | |
7709 | ||
7710 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
7711 | read. */ | |
7712 | ||
7713 | static void | |
7714 | process_cu_includes (void) | |
7715 | { | |
7716 | int ix; | |
7717 | struct dwarf2_per_cu_data *iter; | |
7718 | ||
7719 | for (ix = 0; | |
7720 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
7721 | ix, iter); | |
7722 | ++ix) | |
f4dc4d17 DE |
7723 | { |
7724 | if (! iter->is_debug_types) | |
7725 | compute_symtab_includes (iter); | |
7726 | } | |
95554aad TT |
7727 | |
7728 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
7729 | } | |
7730 | ||
9cdd5dbd | 7731 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
7732 | already been loaded into memory. */ |
7733 | ||
7734 | static void | |
95554aad TT |
7735 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7736 | enum language pretend_language) | |
10b3939b | 7737 | { |
10b3939b | 7738 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 7739 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
7740 | CORE_ADDR lowpc, highpc; |
7741 | struct symtab *symtab; | |
3da10d80 | 7742 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 7743 | CORE_ADDR baseaddr; |
4359dff1 | 7744 | struct block *static_block; |
10b3939b DJ |
7745 | |
7746 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7747 | ||
10b3939b DJ |
7748 | buildsym_init (); |
7749 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 7750 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
7751 | |
7752 | cu->list_in_scope = &file_symbols; | |
c906108c | 7753 | |
95554aad TT |
7754 | cu->language = pretend_language; |
7755 | cu->language_defn = language_def (cu->language); | |
7756 | ||
c906108c | 7757 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 7758 | process_die (cu->dies, cu); |
c906108c | 7759 | |
a766d390 DE |
7760 | /* For now fudge the Go package. */ |
7761 | if (cu->language == language_go) | |
7762 | fixup_go_packaging (cu); | |
7763 | ||
3da10d80 KS |
7764 | /* Now that we have processed all the DIEs in the CU, all the types |
7765 | should be complete, and it should now be safe to compute all of the | |
7766 | physnames. */ | |
7767 | compute_delayed_physnames (cu); | |
7768 | do_cleanups (delayed_list_cleanup); | |
7769 | ||
fae299cd DC |
7770 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
7771 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
7772 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 7773 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 7774 | |
36586728 | 7775 | static_block |
ff546935 | 7776 | = end_symtab_get_static_block (highpc + baseaddr, objfile, 0, 1); |
4359dff1 JK |
7777 | |
7778 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
7779 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
7780 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
7781 | addrmap to help ensure it has an accurate map of pc values belonging to | |
7782 | this comp unit. */ | |
7783 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
7784 | ||
7785 | symtab = end_symtab_from_static_block (static_block, objfile, | |
7786 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 7787 | |
8be455d7 | 7788 | if (symtab != NULL) |
c906108c | 7789 | { |
df15bd07 | 7790 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 7791 | |
8be455d7 JK |
7792 | /* Set symtab language to language from DW_AT_language. If the |
7793 | compilation is from a C file generated by language preprocessors, do | |
7794 | not set the language if it was already deduced by start_subfile. */ | |
7795 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7796 | symtab->language = cu->language; | |
7797 | ||
7798 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
7799 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
7800 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
7801 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
7802 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
7803 | |
7804 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
7805 | needed, it would be wrong due to missing DW_AT_producer there. | |
7806 | ||
7807 | Still one can confuse GDB by using non-standard GCC compilation | |
7808 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
7809 | */ | |
ab260dad | 7810 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 7811 | symtab->locations_valid = 1; |
e0d00bc7 JK |
7812 | |
7813 | if (gcc_4_minor >= 5) | |
7814 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
7815 | |
7816 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 7817 | } |
9291a0cd TT |
7818 | |
7819 | if (dwarf2_per_objfile->using_index) | |
7820 | per_cu->v.quick->symtab = symtab; | |
7821 | else | |
7822 | { | |
7823 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7824 | pst->symtab = symtab; | |
7825 | pst->readin = 1; | |
7826 | } | |
c906108c | 7827 | |
95554aad TT |
7828 | /* Push it for inclusion processing later. */ |
7829 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
7830 | ||
c906108c | 7831 | do_cleanups (back_to); |
f4dc4d17 | 7832 | } |
45cfd468 | 7833 | |
f4dc4d17 DE |
7834 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
7835 | already been loaded into memory. */ | |
7836 | ||
7837 | static void | |
7838 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
7839 | enum language pretend_language) | |
7840 | { | |
7841 | struct dwarf2_cu *cu = per_cu->cu; | |
7842 | struct objfile *objfile = per_cu->objfile; | |
7843 | struct symtab *symtab; | |
7844 | struct cleanup *back_to, *delayed_list_cleanup; | |
0186c6a7 DE |
7845 | struct signatured_type *sig_type; |
7846 | ||
7847 | gdb_assert (per_cu->is_debug_types); | |
7848 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
7849 | |
7850 | buildsym_init (); | |
7851 | back_to = make_cleanup (really_free_pendings, NULL); | |
7852 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
7853 | ||
7854 | cu->list_in_scope = &file_symbols; | |
7855 | ||
7856 | cu->language = pretend_language; | |
7857 | cu->language_defn = language_def (cu->language); | |
7858 | ||
7859 | /* The symbol tables are set up in read_type_unit_scope. */ | |
7860 | process_die (cu->dies, cu); | |
7861 | ||
7862 | /* For now fudge the Go package. */ | |
7863 | if (cu->language == language_go) | |
7864 | fixup_go_packaging (cu); | |
7865 | ||
7866 | /* Now that we have processed all the DIEs in the CU, all the types | |
7867 | should be complete, and it should now be safe to compute all of the | |
7868 | physnames. */ | |
7869 | compute_delayed_physnames (cu); | |
7870 | do_cleanups (delayed_list_cleanup); | |
7871 | ||
7872 | /* TUs share symbol tables. | |
7873 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
7874 | of it with end_expandable_symtab. Otherwise, complete the addition of |
7875 | this TU's symbols to the existing symtab. */ | |
0186c6a7 | 7876 | if (sig_type->type_unit_group->primary_symtab == NULL) |
45cfd468 | 7877 | { |
f4dc4d17 | 7878 | symtab = end_expandable_symtab (0, objfile, SECT_OFF_TEXT (objfile)); |
0186c6a7 | 7879 | sig_type->type_unit_group->primary_symtab = symtab; |
f4dc4d17 DE |
7880 | |
7881 | if (symtab != NULL) | |
7882 | { | |
7883 | /* Set symtab language to language from DW_AT_language. If the | |
7884 | compilation is from a C file generated by language preprocessors, | |
7885 | do not set the language if it was already deduced by | |
7886 | start_subfile. */ | |
7887 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7888 | symtab->language = cu->language; | |
7889 | } | |
7890 | } | |
7891 | else | |
7892 | { | |
7893 | augment_type_symtab (objfile, | |
0186c6a7 DE |
7894 | sig_type->type_unit_group->primary_symtab); |
7895 | symtab = sig_type->type_unit_group->primary_symtab; | |
f4dc4d17 DE |
7896 | } |
7897 | ||
7898 | if (dwarf2_per_objfile->using_index) | |
7899 | per_cu->v.quick->symtab = symtab; | |
7900 | else | |
7901 | { | |
7902 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7903 | pst->symtab = symtab; | |
7904 | pst->readin = 1; | |
45cfd468 | 7905 | } |
f4dc4d17 DE |
7906 | |
7907 | do_cleanups (back_to); | |
c906108c SS |
7908 | } |
7909 | ||
95554aad TT |
7910 | /* Process an imported unit DIE. */ |
7911 | ||
7912 | static void | |
7913 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
7914 | { | |
7915 | struct attribute *attr; | |
7916 | ||
f4dc4d17 DE |
7917 | /* For now we don't handle imported units in type units. */ |
7918 | if (cu->per_cu->is_debug_types) | |
7919 | { | |
7920 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7921 | " supported in type units [in module %s]"), | |
4262abfb | 7922 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
7923 | } |
7924 | ||
95554aad TT |
7925 | attr = dwarf2_attr (die, DW_AT_import, cu); |
7926 | if (attr != NULL) | |
7927 | { | |
7928 | struct dwarf2_per_cu_data *per_cu; | |
7929 | struct symtab *imported_symtab; | |
7930 | sect_offset offset; | |
36586728 | 7931 | int is_dwz; |
95554aad TT |
7932 | |
7933 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
7934 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
7935 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad | 7936 | |
69d751e3 | 7937 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
7938 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
7939 | load_full_comp_unit (per_cu, cu->language); | |
7940 | ||
796a7ff8 | 7941 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
7942 | per_cu); |
7943 | } | |
7944 | } | |
7945 | ||
c906108c SS |
7946 | /* Process a die and its children. */ |
7947 | ||
7948 | static void | |
e7c27a73 | 7949 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7950 | { |
7951 | switch (die->tag) | |
7952 | { | |
7953 | case DW_TAG_padding: | |
7954 | break; | |
7955 | case DW_TAG_compile_unit: | |
95554aad | 7956 | case DW_TAG_partial_unit: |
e7c27a73 | 7957 | read_file_scope (die, cu); |
c906108c | 7958 | break; |
348e048f DE |
7959 | case DW_TAG_type_unit: |
7960 | read_type_unit_scope (die, cu); | |
7961 | break; | |
c906108c | 7962 | case DW_TAG_subprogram: |
c906108c | 7963 | case DW_TAG_inlined_subroutine: |
edb3359d | 7964 | read_func_scope (die, cu); |
c906108c SS |
7965 | break; |
7966 | case DW_TAG_lexical_block: | |
14898363 L |
7967 | case DW_TAG_try_block: |
7968 | case DW_TAG_catch_block: | |
e7c27a73 | 7969 | read_lexical_block_scope (die, cu); |
c906108c | 7970 | break; |
96408a79 SA |
7971 | case DW_TAG_GNU_call_site: |
7972 | read_call_site_scope (die, cu); | |
7973 | break; | |
c906108c | 7974 | case DW_TAG_class_type: |
680b30c7 | 7975 | case DW_TAG_interface_type: |
c906108c SS |
7976 | case DW_TAG_structure_type: |
7977 | case DW_TAG_union_type: | |
134d01f1 | 7978 | process_structure_scope (die, cu); |
c906108c SS |
7979 | break; |
7980 | case DW_TAG_enumeration_type: | |
134d01f1 | 7981 | process_enumeration_scope (die, cu); |
c906108c | 7982 | break; |
134d01f1 | 7983 | |
f792889a DJ |
7984 | /* These dies have a type, but processing them does not create |
7985 | a symbol or recurse to process the children. Therefore we can | |
7986 | read them on-demand through read_type_die. */ | |
c906108c | 7987 | case DW_TAG_subroutine_type: |
72019c9c | 7988 | case DW_TAG_set_type: |
c906108c | 7989 | case DW_TAG_array_type: |
c906108c | 7990 | case DW_TAG_pointer_type: |
c906108c | 7991 | case DW_TAG_ptr_to_member_type: |
c906108c | 7992 | case DW_TAG_reference_type: |
c906108c | 7993 | case DW_TAG_string_type: |
c906108c | 7994 | break; |
134d01f1 | 7995 | |
c906108c | 7996 | case DW_TAG_base_type: |
a02abb62 | 7997 | case DW_TAG_subrange_type: |
cb249c71 | 7998 | case DW_TAG_typedef: |
134d01f1 DJ |
7999 | /* Add a typedef symbol for the type definition, if it has a |
8000 | DW_AT_name. */ | |
f792889a | 8001 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 8002 | break; |
c906108c | 8003 | case DW_TAG_common_block: |
e7c27a73 | 8004 | read_common_block (die, cu); |
c906108c SS |
8005 | break; |
8006 | case DW_TAG_common_inclusion: | |
8007 | break; | |
d9fa45fe | 8008 | case DW_TAG_namespace: |
4d4ec4e5 | 8009 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 8010 | read_namespace (die, cu); |
d9fa45fe | 8011 | break; |
5d7cb8df | 8012 | case DW_TAG_module: |
4d4ec4e5 | 8013 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
8014 | read_module (die, cu); |
8015 | break; | |
d9fa45fe DC |
8016 | case DW_TAG_imported_declaration: |
8017 | case DW_TAG_imported_module: | |
4d4ec4e5 | 8018 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
8019 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
8020 | || cu->language != language_fortran)) | |
8021 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
8022 | dwarf_tag_name (die->tag)); | |
8023 | read_import_statement (die, cu); | |
d9fa45fe | 8024 | break; |
95554aad TT |
8025 | |
8026 | case DW_TAG_imported_unit: | |
8027 | process_imported_unit_die (die, cu); | |
8028 | break; | |
8029 | ||
c906108c | 8030 | default: |
e7c27a73 | 8031 | new_symbol (die, NULL, cu); |
c906108c SS |
8032 | break; |
8033 | } | |
8034 | } | |
ca69b9e6 DE |
8035 | \f |
8036 | /* DWARF name computation. */ | |
c906108c | 8037 | |
94af9270 KS |
8038 | /* A helper function for dwarf2_compute_name which determines whether DIE |
8039 | needs to have the name of the scope prepended to the name listed in the | |
8040 | die. */ | |
8041 | ||
8042 | static int | |
8043 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8044 | { | |
1c809c68 TT |
8045 | struct attribute *attr; |
8046 | ||
94af9270 KS |
8047 | switch (die->tag) |
8048 | { | |
8049 | case DW_TAG_namespace: | |
8050 | case DW_TAG_typedef: | |
8051 | case DW_TAG_class_type: | |
8052 | case DW_TAG_interface_type: | |
8053 | case DW_TAG_structure_type: | |
8054 | case DW_TAG_union_type: | |
8055 | case DW_TAG_enumeration_type: | |
8056 | case DW_TAG_enumerator: | |
8057 | case DW_TAG_subprogram: | |
8058 | case DW_TAG_member: | |
8059 | return 1; | |
8060 | ||
8061 | case DW_TAG_variable: | |
c2b0a229 | 8062 | case DW_TAG_constant: |
94af9270 KS |
8063 | /* We only need to prefix "globally" visible variables. These include |
8064 | any variable marked with DW_AT_external or any variable that | |
8065 | lives in a namespace. [Variables in anonymous namespaces | |
8066 | require prefixing, but they are not DW_AT_external.] */ | |
8067 | ||
8068 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
8069 | { | |
8070 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 8071 | |
94af9270 KS |
8072 | return die_needs_namespace (die_specification (die, &spec_cu), |
8073 | spec_cu); | |
8074 | } | |
8075 | ||
1c809c68 | 8076 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
8077 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
8078 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
8079 | return 0; |
8080 | /* A variable in a lexical block of some kind does not need a | |
8081 | namespace, even though in C++ such variables may be external | |
8082 | and have a mangled name. */ | |
8083 | if (die->parent->tag == DW_TAG_lexical_block | |
8084 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
8085 | || die->parent->tag == DW_TAG_catch_block |
8086 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
8087 | return 0; |
8088 | return 1; | |
94af9270 KS |
8089 | |
8090 | default: | |
8091 | return 0; | |
8092 | } | |
8093 | } | |
8094 | ||
98bfdba5 PA |
8095 | /* Retrieve the last character from a mem_file. */ |
8096 | ||
8097 | static void | |
8098 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
8099 | { | |
8100 | char *last_char_p = (char *) object; | |
8101 | ||
8102 | if (length > 0) | |
8103 | *last_char_p = buffer[length - 1]; | |
8104 | } | |
8105 | ||
94af9270 | 8106 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
8107 | compute the physname for the object, which include a method's: |
8108 | - formal parameters (C++/Java), | |
8109 | - receiver type (Go), | |
8110 | - return type (Java). | |
8111 | ||
8112 | The term "physname" is a bit confusing. | |
8113 | For C++, for example, it is the demangled name. | |
8114 | For Go, for example, it's the mangled name. | |
94af9270 | 8115 | |
af6b7be1 JB |
8116 | For Ada, return the DIE's linkage name rather than the fully qualified |
8117 | name. PHYSNAME is ignored.. | |
8118 | ||
94af9270 KS |
8119 | The result is allocated on the objfile_obstack and canonicalized. */ |
8120 | ||
8121 | static const char * | |
15d034d0 TT |
8122 | dwarf2_compute_name (const char *name, |
8123 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
8124 | int physname) |
8125 | { | |
bb5ed363 DE |
8126 | struct objfile *objfile = cu->objfile; |
8127 | ||
94af9270 KS |
8128 | if (name == NULL) |
8129 | name = dwarf2_name (die, cu); | |
8130 | ||
f55ee35c JK |
8131 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
8132 | compute it by typename_concat inside GDB. */ | |
8133 | if (cu->language == language_ada | |
8134 | || (cu->language == language_fortran && physname)) | |
8135 | { | |
8136 | /* For Ada unit, we prefer the linkage name over the name, as | |
8137 | the former contains the exported name, which the user expects | |
8138 | to be able to reference. Ideally, we want the user to be able | |
8139 | to reference this entity using either natural or linkage name, | |
8140 | but we haven't started looking at this enhancement yet. */ | |
8141 | struct attribute *attr; | |
8142 | ||
8143 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8144 | if (attr == NULL) | |
8145 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8146 | if (attr && DW_STRING (attr)) | |
8147 | return DW_STRING (attr); | |
8148 | } | |
8149 | ||
94af9270 KS |
8150 | /* These are the only languages we know how to qualify names in. */ |
8151 | if (name != NULL | |
f55ee35c JK |
8152 | && (cu->language == language_cplus || cu->language == language_java |
8153 | || cu->language == language_fortran)) | |
94af9270 KS |
8154 | { |
8155 | if (die_needs_namespace (die, cu)) | |
8156 | { | |
8157 | long length; | |
0d5cff50 | 8158 | const char *prefix; |
94af9270 KS |
8159 | struct ui_file *buf; |
8160 | ||
8161 | prefix = determine_prefix (die, cu); | |
8162 | buf = mem_fileopen (); | |
8163 | if (*prefix != '\0') | |
8164 | { | |
f55ee35c JK |
8165 | char *prefixed_name = typename_concat (NULL, prefix, name, |
8166 | physname, cu); | |
9a619af0 | 8167 | |
94af9270 KS |
8168 | fputs_unfiltered (prefixed_name, buf); |
8169 | xfree (prefixed_name); | |
8170 | } | |
8171 | else | |
62d5b8da | 8172 | fputs_unfiltered (name, buf); |
94af9270 | 8173 | |
98bfdba5 PA |
8174 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
8175 | as children with DW_TAG_template_type_param or | |
8176 | DW_TAG_value_type_param. If the latter, add them to the name | |
8177 | here. If the name already has template parameters, then | |
8178 | skip this step; some versions of GCC emit both, and | |
8179 | it is more efficient to use the pre-computed name. | |
8180 | ||
8181 | Something to keep in mind about this process: it is very | |
8182 | unlikely, or in some cases downright impossible, to produce | |
8183 | something that will match the mangled name of a function. | |
8184 | If the definition of the function has the same debug info, | |
8185 | we should be able to match up with it anyway. But fallbacks | |
8186 | using the minimal symbol, for instance to find a method | |
8187 | implemented in a stripped copy of libstdc++, will not work. | |
8188 | If we do not have debug info for the definition, we will have to | |
8189 | match them up some other way. | |
8190 | ||
8191 | When we do name matching there is a related problem with function | |
8192 | templates; two instantiated function templates are allowed to | |
8193 | differ only by their return types, which we do not add here. */ | |
8194 | ||
8195 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
8196 | { | |
8197 | struct attribute *attr; | |
8198 | struct die_info *child; | |
8199 | int first = 1; | |
8200 | ||
8201 | die->building_fullname = 1; | |
8202 | ||
8203 | for (child = die->child; child != NULL; child = child->sibling) | |
8204 | { | |
8205 | struct type *type; | |
12df843f | 8206 | LONGEST value; |
d521ce57 | 8207 | const gdb_byte *bytes; |
98bfdba5 PA |
8208 | struct dwarf2_locexpr_baton *baton; |
8209 | struct value *v; | |
8210 | ||
8211 | if (child->tag != DW_TAG_template_type_param | |
8212 | && child->tag != DW_TAG_template_value_param) | |
8213 | continue; | |
8214 | ||
8215 | if (first) | |
8216 | { | |
8217 | fputs_unfiltered ("<", buf); | |
8218 | first = 0; | |
8219 | } | |
8220 | else | |
8221 | fputs_unfiltered (", ", buf); | |
8222 | ||
8223 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
8224 | if (attr == NULL) | |
8225 | { | |
8226 | complaint (&symfile_complaints, | |
8227 | _("template parameter missing DW_AT_type")); | |
8228 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
8229 | continue; | |
8230 | } | |
8231 | type = die_type (child, cu); | |
8232 | ||
8233 | if (child->tag == DW_TAG_template_type_param) | |
8234 | { | |
79d43c61 | 8235 | c_print_type (type, "", buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
8236 | continue; |
8237 | } | |
8238 | ||
8239 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
8240 | if (attr == NULL) | |
8241 | { | |
8242 | complaint (&symfile_complaints, | |
3e43a32a MS |
8243 | _("template parameter missing " |
8244 | "DW_AT_const_value")); | |
98bfdba5 PA |
8245 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
8246 | continue; | |
8247 | } | |
8248 | ||
8249 | dwarf2_const_value_attr (attr, type, name, | |
8250 | &cu->comp_unit_obstack, cu, | |
8251 | &value, &bytes, &baton); | |
8252 | ||
8253 | if (TYPE_NOSIGN (type)) | |
8254 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
8255 | changed, this can use value_print instead. */ | |
8256 | c_printchar (value, type, buf); | |
8257 | else | |
8258 | { | |
8259 | struct value_print_options opts; | |
8260 | ||
8261 | if (baton != NULL) | |
8262 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
8263 | baton->data, | |
8264 | baton->size, | |
8265 | baton->per_cu); | |
8266 | else if (bytes != NULL) | |
8267 | { | |
8268 | v = allocate_value (type); | |
8269 | memcpy (value_contents_writeable (v), bytes, | |
8270 | TYPE_LENGTH (type)); | |
8271 | } | |
8272 | else | |
8273 | v = value_from_longest (type, value); | |
8274 | ||
3e43a32a MS |
8275 | /* Specify decimal so that we do not depend on |
8276 | the radix. */ | |
98bfdba5 PA |
8277 | get_formatted_print_options (&opts, 'd'); |
8278 | opts.raw = 1; | |
8279 | value_print (v, buf, &opts); | |
8280 | release_value (v); | |
8281 | value_free (v); | |
8282 | } | |
8283 | } | |
8284 | ||
8285 | die->building_fullname = 0; | |
8286 | ||
8287 | if (!first) | |
8288 | { | |
8289 | /* Close the argument list, with a space if necessary | |
8290 | (nested templates). */ | |
8291 | char last_char = '\0'; | |
8292 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
8293 | if (last_char == '>') | |
8294 | fputs_unfiltered (" >", buf); | |
8295 | else | |
8296 | fputs_unfiltered (">", buf); | |
8297 | } | |
8298 | } | |
8299 | ||
94af9270 KS |
8300 | /* For Java and C++ methods, append formal parameter type |
8301 | information, if PHYSNAME. */ | |
6e70227d | 8302 | |
94af9270 KS |
8303 | if (physname && die->tag == DW_TAG_subprogram |
8304 | && (cu->language == language_cplus | |
8305 | || cu->language == language_java)) | |
8306 | { | |
8307 | struct type *type = read_type_die (die, cu); | |
8308 | ||
79d43c61 TT |
8309 | c_type_print_args (type, buf, 1, cu->language, |
8310 | &type_print_raw_options); | |
94af9270 KS |
8311 | |
8312 | if (cu->language == language_java) | |
8313 | { | |
8314 | /* For java, we must append the return type to method | |
0963b4bd | 8315 | names. */ |
94af9270 KS |
8316 | if (die->tag == DW_TAG_subprogram) |
8317 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
79d43c61 | 8318 | 0, 0, &type_print_raw_options); |
94af9270 KS |
8319 | } |
8320 | else if (cu->language == language_cplus) | |
8321 | { | |
60430eff DJ |
8322 | /* Assume that an artificial first parameter is |
8323 | "this", but do not crash if it is not. RealView | |
8324 | marks unnamed (and thus unused) parameters as | |
8325 | artificial; there is no way to differentiate | |
8326 | the two cases. */ | |
94af9270 KS |
8327 | if (TYPE_NFIELDS (type) > 0 |
8328 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 8329 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
8330 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
8331 | 0)))) | |
94af9270 KS |
8332 | fputs_unfiltered (" const", buf); |
8333 | } | |
8334 | } | |
8335 | ||
bb5ed363 | 8336 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
8337 | &length); |
8338 | ui_file_delete (buf); | |
8339 | ||
8340 | if (cu->language == language_cplus) | |
8341 | { | |
15d034d0 | 8342 | const char *cname |
94af9270 | 8343 | = dwarf2_canonicalize_name (name, cu, |
bb5ed363 | 8344 | &objfile->objfile_obstack); |
9a619af0 | 8345 | |
94af9270 KS |
8346 | if (cname != NULL) |
8347 | name = cname; | |
8348 | } | |
8349 | } | |
8350 | } | |
8351 | ||
8352 | return name; | |
8353 | } | |
8354 | ||
0114d602 DJ |
8355 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
8356 | If scope qualifiers are appropriate they will be added. The result | |
8357 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
8358 | not have a name. NAME may either be from a previous call to |
8359 | dwarf2_name or NULL. | |
8360 | ||
0963b4bd | 8361 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
8362 | |
8363 | static const char * | |
15d034d0 | 8364 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 8365 | { |
94af9270 KS |
8366 | return dwarf2_compute_name (name, die, cu, 0); |
8367 | } | |
0114d602 | 8368 | |
94af9270 KS |
8369 | /* Construct a physname for the given DIE in CU. NAME may either be |
8370 | from a previous call to dwarf2_name or NULL. The result will be | |
8371 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
8372 | name. | |
0114d602 | 8373 | |
94af9270 | 8374 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 8375 | |
94af9270 | 8376 | static const char * |
15d034d0 | 8377 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 8378 | { |
bb5ed363 | 8379 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
8380 | struct attribute *attr; |
8381 | const char *retval, *mangled = NULL, *canon = NULL; | |
8382 | struct cleanup *back_to; | |
8383 | int need_copy = 1; | |
8384 | ||
8385 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
8386 | on its own. */ | |
8387 | if (!die_needs_namespace (die, cu)) | |
8388 | return dwarf2_compute_name (name, die, cu, 1); | |
8389 | ||
8390 | back_to = make_cleanup (null_cleanup, NULL); | |
8391 | ||
8392 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8393 | if (!attr) | |
8394 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8395 | ||
8396 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
8397 | has computed. */ | |
8398 | if (attr && DW_STRING (attr)) | |
8399 | { | |
8400 | char *demangled; | |
8401 | ||
8402 | mangled = DW_STRING (attr); | |
8403 | ||
8404 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
8405 | type. It is easier for GDB users to search for such functions as | |
8406 | `name(params)' than `long name(params)'. In such case the minimal | |
8407 | symbol names do not match the full symbol names but for template | |
8408 | functions there is never a need to look up their definition from their | |
8409 | declaration so the only disadvantage remains the minimal symbol | |
8410 | variant `long name(params)' does not have the proper inferior type. | |
8411 | */ | |
8412 | ||
a766d390 DE |
8413 | if (cu->language == language_go) |
8414 | { | |
8415 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
8416 | new_symbol_full assumes we return the mangled name. | |
8417 | This just undoes that lie until things are cleaned up. */ | |
8418 | demangled = NULL; | |
8419 | } | |
8420 | else | |
8421 | { | |
8de20a37 TT |
8422 | demangled = gdb_demangle (mangled, |
8423 | (DMGL_PARAMS | DMGL_ANSI | |
8424 | | (cu->language == language_java | |
8425 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
8426 | : DMGL_RET_DROP))); | |
a766d390 | 8427 | } |
900e11f9 JK |
8428 | if (demangled) |
8429 | { | |
8430 | make_cleanup (xfree, demangled); | |
8431 | canon = demangled; | |
8432 | } | |
8433 | else | |
8434 | { | |
8435 | canon = mangled; | |
8436 | need_copy = 0; | |
8437 | } | |
8438 | } | |
8439 | ||
8440 | if (canon == NULL || check_physname) | |
8441 | { | |
8442 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
8443 | ||
8444 | if (canon != NULL && strcmp (physname, canon) != 0) | |
8445 | { | |
8446 | /* It may not mean a bug in GDB. The compiler could also | |
8447 | compute DW_AT_linkage_name incorrectly. But in such case | |
8448 | GDB would need to be bug-to-bug compatible. */ | |
8449 | ||
8450 | complaint (&symfile_complaints, | |
8451 | _("Computed physname <%s> does not match demangled <%s> " | |
8452 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
4262abfb JK |
8453 | physname, canon, mangled, die->offset.sect_off, |
8454 | objfile_name (objfile)); | |
900e11f9 JK |
8455 | |
8456 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
8457 | is available here - over computed PHYSNAME. It is safer | |
8458 | against both buggy GDB and buggy compilers. */ | |
8459 | ||
8460 | retval = canon; | |
8461 | } | |
8462 | else | |
8463 | { | |
8464 | retval = physname; | |
8465 | need_copy = 0; | |
8466 | } | |
8467 | } | |
8468 | else | |
8469 | retval = canon; | |
8470 | ||
8471 | if (need_copy) | |
10f0c4bb | 8472 | retval = obstack_copy0 (&objfile->objfile_obstack, retval, strlen (retval)); |
900e11f9 JK |
8473 | |
8474 | do_cleanups (back_to); | |
8475 | return retval; | |
0114d602 DJ |
8476 | } |
8477 | ||
27aa8d6a SW |
8478 | /* Read the import statement specified by the given die and record it. */ |
8479 | ||
8480 | static void | |
8481 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
8482 | { | |
bb5ed363 | 8483 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 8484 | struct attribute *import_attr; |
32019081 | 8485 | struct die_info *imported_die, *child_die; |
de4affc9 | 8486 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 8487 | const char *imported_name; |
794684b6 | 8488 | const char *imported_name_prefix; |
13387711 SW |
8489 | const char *canonical_name; |
8490 | const char *import_alias; | |
8491 | const char *imported_declaration = NULL; | |
794684b6 | 8492 | const char *import_prefix; |
32019081 JK |
8493 | VEC (const_char_ptr) *excludes = NULL; |
8494 | struct cleanup *cleanups; | |
13387711 | 8495 | |
27aa8d6a SW |
8496 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
8497 | if (import_attr == NULL) | |
8498 | { | |
8499 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8500 | dwarf_tag_name (die->tag)); | |
8501 | return; | |
8502 | } | |
8503 | ||
de4affc9 CC |
8504 | imported_cu = cu; |
8505 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
8506 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
8507 | if (imported_name == NULL) |
8508 | { | |
8509 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
8510 | ||
8511 | The import in the following code: | |
8512 | namespace A | |
8513 | { | |
8514 | typedef int B; | |
8515 | } | |
8516 | ||
8517 | int main () | |
8518 | { | |
8519 | using A::B; | |
8520 | B b; | |
8521 | return b; | |
8522 | } | |
8523 | ||
8524 | ... | |
8525 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
8526 | <52> DW_AT_decl_file : 1 | |
8527 | <53> DW_AT_decl_line : 6 | |
8528 | <54> DW_AT_import : <0x75> | |
8529 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
8530 | <59> DW_AT_name : B | |
8531 | <5b> DW_AT_decl_file : 1 | |
8532 | <5c> DW_AT_decl_line : 2 | |
8533 | <5d> DW_AT_type : <0x6e> | |
8534 | ... | |
8535 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
8536 | <76> DW_AT_byte_size : 4 | |
8537 | <77> DW_AT_encoding : 5 (signed) | |
8538 | ||
8539 | imports the wrong die ( 0x75 instead of 0x58 ). | |
8540 | This case will be ignored until the gcc bug is fixed. */ | |
8541 | return; | |
8542 | } | |
8543 | ||
82856980 SW |
8544 | /* Figure out the local name after import. */ |
8545 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 8546 | |
794684b6 SW |
8547 | /* Figure out where the statement is being imported to. */ |
8548 | import_prefix = determine_prefix (die, cu); | |
8549 | ||
8550 | /* Figure out what the scope of the imported die is and prepend it | |
8551 | to the name of the imported die. */ | |
de4affc9 | 8552 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 8553 | |
f55ee35c JK |
8554 | if (imported_die->tag != DW_TAG_namespace |
8555 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 8556 | { |
13387711 SW |
8557 | imported_declaration = imported_name; |
8558 | canonical_name = imported_name_prefix; | |
794684b6 | 8559 | } |
13387711 | 8560 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 TT |
8561 | canonical_name = obconcat (&objfile->objfile_obstack, |
8562 | imported_name_prefix, "::", imported_name, | |
8563 | (char *) NULL); | |
13387711 SW |
8564 | else |
8565 | canonical_name = imported_name; | |
794684b6 | 8566 | |
32019081 JK |
8567 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
8568 | ||
8569 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
8570 | for (child_die = die->child; child_die && child_die->tag; | |
8571 | child_die = sibling_die (child_die)) | |
8572 | { | |
8573 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
8574 | represented by an imported module entry with an import attribute | |
8575 | referring to the module and owned entries corresponding to those | |
8576 | entities that are renamed as part of being imported. */ | |
8577 | ||
8578 | if (child_die->tag != DW_TAG_imported_declaration) | |
8579 | { | |
8580 | complaint (&symfile_complaints, | |
8581 | _("child DW_TAG_imported_declaration expected " | |
8582 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 8583 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8584 | continue; |
8585 | } | |
8586 | ||
8587 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
8588 | if (import_attr == NULL) | |
8589 | { | |
8590 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8591 | dwarf_tag_name (child_die->tag)); | |
8592 | continue; | |
8593 | } | |
8594 | ||
8595 | imported_cu = cu; | |
8596 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
8597 | &imported_cu); | |
8598 | imported_name = dwarf2_name (imported_die, imported_cu); | |
8599 | if (imported_name == NULL) | |
8600 | { | |
8601 | complaint (&symfile_complaints, | |
8602 | _("child DW_TAG_imported_declaration has unknown " | |
8603 | "imported name - DIE at 0x%x [in module %s]"), | |
4262abfb | 8604 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8605 | continue; |
8606 | } | |
8607 | ||
8608 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
8609 | ||
8610 | process_die (child_die, cu); | |
8611 | } | |
8612 | ||
c0cc3a76 SW |
8613 | cp_add_using_directive (import_prefix, |
8614 | canonical_name, | |
8615 | import_alias, | |
13387711 | 8616 | imported_declaration, |
32019081 | 8617 | excludes, |
12aaed36 | 8618 | 0, |
bb5ed363 | 8619 | &objfile->objfile_obstack); |
32019081 JK |
8620 | |
8621 | do_cleanups (cleanups); | |
27aa8d6a SW |
8622 | } |
8623 | ||
f4dc4d17 | 8624 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 8625 | |
cb1df416 DJ |
8626 | static void |
8627 | free_cu_line_header (void *arg) | |
8628 | { | |
8629 | struct dwarf2_cu *cu = arg; | |
8630 | ||
8631 | free_line_header (cu->line_header); | |
8632 | cu->line_header = NULL; | |
8633 | } | |
8634 | ||
1b80a9fa JK |
8635 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
8636 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
8637 | this, it was first present in GCC release 4.3.0. */ | |
8638 | ||
8639 | static int | |
8640 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
8641 | { | |
8642 | if (!cu->checked_producer) | |
8643 | check_producer (cu); | |
8644 | ||
8645 | return cu->producer_is_gcc_lt_4_3; | |
8646 | } | |
8647 | ||
9291a0cd TT |
8648 | static void |
8649 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 8650 | const char **name, const char **comp_dir) |
9291a0cd TT |
8651 | { |
8652 | struct attribute *attr; | |
8653 | ||
8654 | *name = NULL; | |
8655 | *comp_dir = NULL; | |
8656 | ||
8657 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
8658 | is not a source language identifier. */ | |
8659 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8660 | if (attr) | |
8661 | { | |
8662 | *name = DW_STRING (attr); | |
8663 | } | |
8664 | ||
8665 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
8666 | if (attr) | |
8667 | *comp_dir = DW_STRING (attr); | |
1b80a9fa JK |
8668 | else if (producer_is_gcc_lt_4_3 (cu) && *name != NULL |
8669 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 8670 | { |
15d034d0 TT |
8671 | char *d = ldirname (*name); |
8672 | ||
8673 | *comp_dir = d; | |
8674 | if (d != NULL) | |
8675 | make_cleanup (xfree, d); | |
9291a0cd TT |
8676 | } |
8677 | if (*comp_dir != NULL) | |
8678 | { | |
8679 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
8680 | directory, get rid of it. */ | |
8681 | char *cp = strchr (*comp_dir, ':'); | |
8682 | ||
8683 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
8684 | *comp_dir = cp + 1; | |
8685 | } | |
8686 | ||
8687 | if (*name == NULL) | |
8688 | *name = "<unknown>"; | |
8689 | } | |
8690 | ||
f4dc4d17 DE |
8691 | /* Handle DW_AT_stmt_list for a compilation unit. |
8692 | DIE is the DW_TAG_compile_unit die for CU. | |
f3f5162e DE |
8693 | COMP_DIR is the compilation directory. |
8694 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
8695 | |
8696 | static void | |
8697 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
b385a60d | 8698 | const char *comp_dir) /* ARI: editCase function */ |
2ab95328 TT |
8699 | { |
8700 | struct attribute *attr; | |
2ab95328 | 8701 | |
f4dc4d17 DE |
8702 | gdb_assert (! cu->per_cu->is_debug_types); |
8703 | ||
2ab95328 TT |
8704 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
8705 | if (attr) | |
8706 | { | |
8707 | unsigned int line_offset = DW_UNSND (attr); | |
8708 | struct line_header *line_header | |
3019eac3 | 8709 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
8710 | |
8711 | if (line_header) | |
dee91e82 DE |
8712 | { |
8713 | cu->line_header = line_header; | |
8714 | make_cleanup (free_cu_line_header, cu); | |
f4dc4d17 | 8715 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, 1); |
dee91e82 | 8716 | } |
2ab95328 TT |
8717 | } |
8718 | } | |
8719 | ||
95554aad | 8720 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 8721 | |
c906108c | 8722 | static void |
e7c27a73 | 8723 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8724 | { |
dee91e82 | 8725 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 8726 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 8727 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
8728 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
8729 | struct attribute *attr; | |
15d034d0 TT |
8730 | const char *name = NULL; |
8731 | const char *comp_dir = NULL; | |
c906108c SS |
8732 | struct die_info *child_die; |
8733 | bfd *abfd = objfile->obfd; | |
e142c38c | 8734 | CORE_ADDR baseaddr; |
6e70227d | 8735 | |
e142c38c | 8736 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 8737 | |
fae299cd | 8738 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
8739 | |
8740 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
8741 | from finish_block. */ | |
2acceee2 | 8742 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
8743 | lowpc = highpc; |
8744 | lowpc += baseaddr; | |
8745 | highpc += baseaddr; | |
8746 | ||
9291a0cd | 8747 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 8748 | |
95554aad | 8749 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 8750 | |
f4b8a18d KW |
8751 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
8752 | standardised yet. As a workaround for the language detection we fall | |
8753 | back to the DW_AT_producer string. */ | |
8754 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
8755 | cu->language = language_opencl; | |
8756 | ||
3019eac3 DE |
8757 | /* Similar hack for Go. */ |
8758 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
8759 | set_cu_language (DW_LANG_Go, cu); | |
8760 | ||
f4dc4d17 | 8761 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
8762 | |
8763 | /* Decode line number information if present. We do this before | |
8764 | processing child DIEs, so that the line header table is available | |
8765 | for DW_AT_decl_file. */ | |
f4dc4d17 | 8766 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
3019eac3 DE |
8767 | |
8768 | /* Process all dies in compilation unit. */ | |
8769 | if (die->child != NULL) | |
8770 | { | |
8771 | child_die = die->child; | |
8772 | while (child_die && child_die->tag) | |
8773 | { | |
8774 | process_die (child_die, cu); | |
8775 | child_die = sibling_die (child_die); | |
8776 | } | |
8777 | } | |
8778 | ||
8779 | /* Decode macro information, if present. Dwarf 2 macro information | |
8780 | refers to information in the line number info statement program | |
8781 | header, so we can only read it if we've read the header | |
8782 | successfully. */ | |
8783 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
8784 | if (attr && cu->line_header) | |
8785 | { | |
8786 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
8787 | complaint (&symfile_complaints, | |
8788 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
8789 | ||
09262596 | 8790 | dwarf_decode_macros (cu, DW_UNSND (attr), comp_dir, 1); |
3019eac3 DE |
8791 | } |
8792 | else | |
8793 | { | |
8794 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
8795 | if (attr && cu->line_header) | |
8796 | { | |
8797 | unsigned int macro_offset = DW_UNSND (attr); | |
8798 | ||
09262596 | 8799 | dwarf_decode_macros (cu, macro_offset, comp_dir, 0); |
3019eac3 DE |
8800 | } |
8801 | } | |
8802 | ||
8803 | do_cleanups (back_to); | |
8804 | } | |
8805 | ||
f4dc4d17 DE |
8806 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
8807 | Create the set of symtabs used by this TU, or if this TU is sharing | |
8808 | symtabs with another TU and the symtabs have already been created | |
8809 | then restore those symtabs in the line header. | |
8810 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
8811 | |
8812 | static void | |
f4dc4d17 | 8813 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 8814 | { |
f4dc4d17 DE |
8815 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8816 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
8817 | struct type_unit_group *tu_group; | |
8818 | int first_time; | |
8819 | struct line_header *lh; | |
3019eac3 | 8820 | struct attribute *attr; |
f4dc4d17 | 8821 | unsigned int i, line_offset; |
0186c6a7 | 8822 | struct signatured_type *sig_type; |
3019eac3 | 8823 | |
f4dc4d17 | 8824 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 8825 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 8826 | |
f4dc4d17 | 8827 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 8828 | |
f4dc4d17 | 8829 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 8830 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
8831 | if (sig_type->type_unit_group == NULL) |
8832 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
8833 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
8834 | |
8835 | /* If we've already processed this stmt_list there's no real need to | |
8836 | do it again, we could fake it and just recreate the part we need | |
8837 | (file name,index -> symtab mapping). If data shows this optimization | |
8838 | is useful we can do it then. */ | |
8839 | first_time = tu_group->primary_symtab == NULL; | |
8840 | ||
8841 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
8842 | debug info. */ | |
8843 | lh = NULL; | |
8844 | if (attr != NULL) | |
3019eac3 | 8845 | { |
f4dc4d17 DE |
8846 | line_offset = DW_UNSND (attr); |
8847 | lh = dwarf_decode_line_header (line_offset, cu); | |
8848 | } | |
8849 | if (lh == NULL) | |
8850 | { | |
8851 | if (first_time) | |
8852 | dwarf2_start_symtab (cu, "", NULL, 0); | |
8853 | else | |
8854 | { | |
8855 | gdb_assert (tu_group->symtabs == NULL); | |
8856 | restart_symtab (0); | |
8857 | } | |
8858 | /* Note: The primary symtab will get allocated at the end. */ | |
8859 | return; | |
3019eac3 DE |
8860 | } |
8861 | ||
f4dc4d17 DE |
8862 | cu->line_header = lh; |
8863 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 8864 | |
f4dc4d17 DE |
8865 | if (first_time) |
8866 | { | |
8867 | dwarf2_start_symtab (cu, "", NULL, 0); | |
3019eac3 | 8868 | |
f4dc4d17 DE |
8869 | tu_group->num_symtabs = lh->num_file_names; |
8870 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 8871 | |
f4dc4d17 DE |
8872 | for (i = 0; i < lh->num_file_names; ++i) |
8873 | { | |
d521ce57 | 8874 | const char *dir = NULL; |
f4dc4d17 | 8875 | struct file_entry *fe = &lh->file_names[i]; |
3019eac3 | 8876 | |
f4dc4d17 DE |
8877 | if (fe->dir_index) |
8878 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8879 | dwarf2_start_subfile (fe->name, dir, NULL); | |
3019eac3 | 8880 | |
f4dc4d17 DE |
8881 | /* Note: We don't have to watch for the main subfile here, type units |
8882 | don't have DW_AT_name. */ | |
3019eac3 | 8883 | |
f4dc4d17 DE |
8884 | if (current_subfile->symtab == NULL) |
8885 | { | |
8886 | /* NOTE: start_subfile will recognize when it's been passed | |
8887 | a file it has already seen. So we can't assume there's a | |
8888 | simple mapping from lh->file_names to subfiles, | |
8889 | lh->file_names may contain dups. */ | |
8890 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
8891 | objfile); | |
8892 | } | |
8893 | ||
8894 | fe->symtab = current_subfile->symtab; | |
8895 | tu_group->symtabs[i] = fe->symtab; | |
8896 | } | |
8897 | } | |
8898 | else | |
3019eac3 | 8899 | { |
f4dc4d17 DE |
8900 | restart_symtab (0); |
8901 | ||
8902 | for (i = 0; i < lh->num_file_names; ++i) | |
8903 | { | |
8904 | struct file_entry *fe = &lh->file_names[i]; | |
8905 | ||
8906 | fe->symtab = tu_group->symtabs[i]; | |
8907 | } | |
3019eac3 DE |
8908 | } |
8909 | ||
f4dc4d17 DE |
8910 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
8911 | so they don't have a "real" (so to speak) symtab anyway. | |
8912 | There is later code that will assign the main symtab to all symbols | |
8913 | that don't have one. We need to handle the case of a symbol with a | |
8914 | missing symtab (DW_AT_decl_file) anyway. */ | |
8915 | } | |
3019eac3 | 8916 | |
f4dc4d17 DE |
8917 | /* Process DW_TAG_type_unit. |
8918 | For TUs we want to skip the first top level sibling if it's not the | |
8919 | actual type being defined by this TU. In this case the first top | |
8920 | level sibling is there to provide context only. */ | |
3019eac3 | 8921 | |
f4dc4d17 DE |
8922 | static void |
8923 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
8924 | { | |
8925 | struct die_info *child_die; | |
3019eac3 | 8926 | |
f4dc4d17 DE |
8927 | prepare_one_comp_unit (cu, die, language_minimal); |
8928 | ||
8929 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
8930 | We do this before processing child DIEs, so that the line header table | |
8931 | is available for DW_AT_decl_file. */ | |
8932 | setup_type_unit_groups (die, cu); | |
8933 | ||
8934 | if (die->child != NULL) | |
8935 | { | |
8936 | child_die = die->child; | |
8937 | while (child_die && child_die->tag) | |
8938 | { | |
8939 | process_die (child_die, cu); | |
8940 | child_die = sibling_die (child_die); | |
8941 | } | |
8942 | } | |
3019eac3 DE |
8943 | } |
8944 | \f | |
80626a55 DE |
8945 | /* DWO/DWP files. |
8946 | ||
8947 | http://gcc.gnu.org/wiki/DebugFission | |
8948 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
8949 | ||
8950 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
8951 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
8952 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
8953 | |
8954 | static hashval_t | |
8955 | hash_dwo_file (const void *item) | |
8956 | { | |
8957 | const struct dwo_file *dwo_file = item; | |
a2ce51a0 | 8958 | hashval_t hash; |
3019eac3 | 8959 | |
a2ce51a0 DE |
8960 | hash = htab_hash_string (dwo_file->dwo_name); |
8961 | if (dwo_file->comp_dir != NULL) | |
8962 | hash += htab_hash_string (dwo_file->comp_dir); | |
8963 | return hash; | |
3019eac3 DE |
8964 | } |
8965 | ||
8966 | static int | |
8967 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
8968 | { | |
8969 | const struct dwo_file *lhs = item_lhs; | |
8970 | const struct dwo_file *rhs = item_rhs; | |
8971 | ||
a2ce51a0 DE |
8972 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
8973 | return 0; | |
8974 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
8975 | return lhs->comp_dir == rhs->comp_dir; | |
8976 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
8977 | } |
8978 | ||
8979 | /* Allocate a hash table for DWO files. */ | |
8980 | ||
8981 | static htab_t | |
8982 | allocate_dwo_file_hash_table (void) | |
8983 | { | |
8984 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8985 | ||
8986 | return htab_create_alloc_ex (41, | |
8987 | hash_dwo_file, | |
8988 | eq_dwo_file, | |
8989 | NULL, | |
8990 | &objfile->objfile_obstack, | |
8991 | hashtab_obstack_allocate, | |
8992 | dummy_obstack_deallocate); | |
8993 | } | |
8994 | ||
80626a55 DE |
8995 | /* Lookup DWO file DWO_NAME. */ |
8996 | ||
8997 | static void ** | |
0ac5b59e | 8998 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
8999 | { |
9000 | struct dwo_file find_entry; | |
9001 | void **slot; | |
9002 | ||
9003 | if (dwarf2_per_objfile->dwo_files == NULL) | |
9004 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
9005 | ||
9006 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
9007 | find_entry.dwo_name = dwo_name; |
9008 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
9009 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
9010 | ||
9011 | return slot; | |
9012 | } | |
9013 | ||
3019eac3 DE |
9014 | static hashval_t |
9015 | hash_dwo_unit (const void *item) | |
9016 | { | |
9017 | const struct dwo_unit *dwo_unit = item; | |
9018 | ||
9019 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
9020 | return dwo_unit->signature; | |
9021 | } | |
9022 | ||
9023 | static int | |
9024 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
9025 | { | |
9026 | const struct dwo_unit *lhs = item_lhs; | |
9027 | const struct dwo_unit *rhs = item_rhs; | |
9028 | ||
9029 | /* The signature is assumed to be unique within the DWO file. | |
9030 | So while object file CU dwo_id's always have the value zero, | |
9031 | that's OK, assuming each object file DWO file has only one CU, | |
9032 | and that's the rule for now. */ | |
9033 | return lhs->signature == rhs->signature; | |
9034 | } | |
9035 | ||
9036 | /* Allocate a hash table for DWO CUs,TUs. | |
9037 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
9038 | ||
9039 | static htab_t | |
9040 | allocate_dwo_unit_table (struct objfile *objfile) | |
9041 | { | |
9042 | /* Start out with a pretty small number. | |
9043 | Generally DWO files contain only one CU and maybe some TUs. */ | |
9044 | return htab_create_alloc_ex (3, | |
9045 | hash_dwo_unit, | |
9046 | eq_dwo_unit, | |
9047 | NULL, | |
9048 | &objfile->objfile_obstack, | |
9049 | hashtab_obstack_allocate, | |
9050 | dummy_obstack_deallocate); | |
9051 | } | |
9052 | ||
80626a55 | 9053 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 9054 | |
19c3d4c9 | 9055 | struct create_dwo_cu_data |
3019eac3 DE |
9056 | { |
9057 | struct dwo_file *dwo_file; | |
19c3d4c9 | 9058 | struct dwo_unit dwo_unit; |
3019eac3 DE |
9059 | }; |
9060 | ||
19c3d4c9 | 9061 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
9062 | |
9063 | static void | |
19c3d4c9 DE |
9064 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
9065 | const gdb_byte *info_ptr, | |
9066 | struct die_info *comp_unit_die, | |
9067 | int has_children, | |
9068 | void *datap) | |
3019eac3 DE |
9069 | { |
9070 | struct dwarf2_cu *cu = reader->cu; | |
9071 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9072 | sect_offset offset = cu->per_cu->offset; | |
8a0459fd | 9073 | struct dwarf2_section_info *section = cu->per_cu->section; |
19c3d4c9 | 9074 | struct create_dwo_cu_data *data = datap; |
3019eac3 | 9075 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 9076 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 9077 | struct attribute *attr; |
3019eac3 DE |
9078 | |
9079 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
9080 | if (attr == NULL) | |
9081 | { | |
19c3d4c9 DE |
9082 | complaint (&symfile_complaints, |
9083 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
9084 | " its dwo_id [in module %s]"), | |
9085 | offset.sect_off, dwo_file->dwo_name); | |
3019eac3 DE |
9086 | return; |
9087 | } | |
9088 | ||
3019eac3 DE |
9089 | dwo_unit->dwo_file = dwo_file; |
9090 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 9091 | dwo_unit->section = section; |
3019eac3 DE |
9092 | dwo_unit->offset = offset; |
9093 | dwo_unit->length = cu->per_cu->length; | |
9094 | ||
09406207 | 9095 | if (dwarf2_read_debug) |
4031ecc5 DE |
9096 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9097 | offset.sect_off, hex_string (dwo_unit->signature)); | |
3019eac3 DE |
9098 | } |
9099 | ||
19c3d4c9 DE |
9100 | /* Create the dwo_unit for the lone CU in DWO_FILE. |
9101 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 | 9102 | |
19c3d4c9 DE |
9103 | static struct dwo_unit * |
9104 | create_dwo_cu (struct dwo_file *dwo_file) | |
3019eac3 DE |
9105 | { |
9106 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9107 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
9108 | bfd *abfd; | |
9109 | htab_t cu_htab; | |
d521ce57 | 9110 | const gdb_byte *info_ptr, *end_ptr; |
19c3d4c9 DE |
9111 | struct create_dwo_cu_data create_dwo_cu_data; |
9112 | struct dwo_unit *dwo_unit; | |
3019eac3 DE |
9113 | |
9114 | dwarf2_read_section (objfile, section); | |
9115 | info_ptr = section->buffer; | |
9116 | ||
9117 | if (info_ptr == NULL) | |
9118 | return NULL; | |
9119 | ||
9120 | /* We can't set abfd until now because the section may be empty or | |
9121 | not present, in which case section->asection will be NULL. */ | |
a32a8923 | 9122 | abfd = get_section_bfd_owner (section); |
3019eac3 | 9123 | |
09406207 | 9124 | if (dwarf2_read_debug) |
19c3d4c9 DE |
9125 | { |
9126 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
a32a8923 DE |
9127 | get_section_name (section), |
9128 | get_section_file_name (section)); | |
19c3d4c9 | 9129 | } |
3019eac3 | 9130 | |
19c3d4c9 DE |
9131 | create_dwo_cu_data.dwo_file = dwo_file; |
9132 | dwo_unit = NULL; | |
3019eac3 DE |
9133 | |
9134 | end_ptr = info_ptr + section->size; | |
9135 | while (info_ptr < end_ptr) | |
9136 | { | |
9137 | struct dwarf2_per_cu_data per_cu; | |
9138 | ||
19c3d4c9 DE |
9139 | memset (&create_dwo_cu_data.dwo_unit, 0, |
9140 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
9141 | memset (&per_cu, 0, sizeof (per_cu)); |
9142 | per_cu.objfile = objfile; | |
9143 | per_cu.is_debug_types = 0; | |
9144 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 9145 | per_cu.section = section; |
3019eac3 DE |
9146 | |
9147 | init_cutu_and_read_dies_no_follow (&per_cu, | |
9148 | &dwo_file->sections.abbrev, | |
9149 | dwo_file, | |
19c3d4c9 DE |
9150 | create_dwo_cu_reader, |
9151 | &create_dwo_cu_data); | |
9152 | ||
9153 | if (create_dwo_cu_data.dwo_unit.dwo_file != NULL) | |
9154 | { | |
9155 | /* If we've already found one, complain. We only support one | |
9156 | because having more than one requires hacking the dwo_name of | |
9157 | each to match, which is highly unlikely to happen. */ | |
9158 | if (dwo_unit != NULL) | |
9159 | { | |
9160 | complaint (&symfile_complaints, | |
9161 | _("Multiple CUs in DWO file %s [in module %s]"), | |
4262abfb | 9162 | dwo_file->dwo_name, objfile_name (objfile)); |
19c3d4c9 DE |
9163 | break; |
9164 | } | |
9165 | ||
9166 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9167 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
9168 | } | |
3019eac3 DE |
9169 | |
9170 | info_ptr += per_cu.length; | |
9171 | } | |
9172 | ||
19c3d4c9 | 9173 | return dwo_unit; |
3019eac3 DE |
9174 | } |
9175 | ||
80626a55 DE |
9176 | /* DWP file .debug_{cu,tu}_index section format: |
9177 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
9178 | ||
d2415c6c DE |
9179 | DWP Version 1: |
9180 | ||
80626a55 DE |
9181 | Both index sections have the same format, and serve to map a 64-bit |
9182 | signature to a set of section numbers. Each section begins with a header, | |
9183 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
9184 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
9185 | aligned at 8-byte boundaries in the file. | |
9186 | ||
d2415c6c DE |
9187 | The index section header consists of: |
9188 | ||
9189 | V, 32 bit version number | |
9190 | -, 32 bits unused | |
9191 | N, 32 bit number of compilation units or type units in the index | |
9192 | M, 32 bit number of slots in the hash table | |
80626a55 | 9193 | |
d2415c6c | 9194 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 9195 | |
d2415c6c DE |
9196 | The hash table begins at offset 16 in the section, and consists of an array |
9197 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
9198 | order of the application binary). Unused slots in the hash table are 0. | |
9199 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 9200 | |
d2415c6c DE |
9201 | The parallel table begins immediately after the hash table |
9202 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
9203 | array of 32-bit indexes (using the byte order of the application binary), | |
9204 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
9205 | table contains a 32-bit index into the pool of section numbers. For unused | |
9206 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 9207 | |
73869dc2 DE |
9208 | The pool of section numbers begins immediately following the hash table |
9209 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
9210 | section numbers consists of an array of 32-bit words (using the byte order | |
9211 | of the application binary). Each item in the array is indexed starting | |
9212 | from 0. The hash table entry provides the index of the first section | |
9213 | number in the set. Additional section numbers in the set follow, and the | |
9214 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
9215 | ||
9216 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
9217 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
9218 | be the second entry. Other members of the set may follow in any order. | |
9219 | ||
9220 | --- | |
9221 | ||
9222 | DWP Version 2: | |
9223 | ||
9224 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
9225 | and the entries in the index tables are now offsets into these sections. | |
9226 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
9227 | section. | |
9228 | ||
9229 | Index Section Contents: | |
9230 | Header | |
9231 | Hash Table of Signatures dwp_hash_table.hash_table | |
9232 | Parallel Table of Indices dwp_hash_table.unit_table | |
9233 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
9234 | Table of Section Sizes dwp_hash_table.v2.sizes | |
9235 | ||
9236 | The index section header consists of: | |
9237 | ||
9238 | V, 32 bit version number | |
9239 | L, 32 bit number of columns in the table of section offsets | |
9240 | N, 32 bit number of compilation units or type units in the index | |
9241 | M, 32 bit number of slots in the hash table | |
9242 | ||
9243 | Numbers are recorded using the byte order of the application binary. | |
9244 | ||
9245 | The hash table has the same format as version 1. | |
9246 | The parallel table of indices has the same format as version 1, | |
9247 | except that the entries are origin-1 indices into the table of sections | |
9248 | offsets and the table of section sizes. | |
9249 | ||
9250 | The table of offsets begins immediately following the parallel table | |
9251 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
9252 | a two-dimensional array of 32-bit words (using the byte order of the | |
9253 | application binary), with L columns and N+1 rows, in row-major order. | |
9254 | Each row in the array is indexed starting from 0. The first row provides | |
9255 | a key to the remaining rows: each column in this row provides an identifier | |
9256 | for a debug section, and the offsets in the same column of subsequent rows | |
9257 | refer to that section. The section identifiers are: | |
9258 | ||
9259 | DW_SECT_INFO 1 .debug_info.dwo | |
9260 | DW_SECT_TYPES 2 .debug_types.dwo | |
9261 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
9262 | DW_SECT_LINE 4 .debug_line.dwo | |
9263 | DW_SECT_LOC 5 .debug_loc.dwo | |
9264 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
9265 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
9266 | DW_SECT_MACRO 8 .debug_macro.dwo | |
9267 | ||
9268 | The offsets provided by the CU and TU index sections are the base offsets | |
9269 | for the contributions made by each CU or TU to the corresponding section | |
9270 | in the package file. Each CU and TU header contains an abbrev_offset | |
9271 | field, used to find the abbreviations table for that CU or TU within the | |
9272 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
9273 | be interpreted as relative to the base offset given in the index section. | |
9274 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
9275 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
9276 | and offsets into other debug sections obtained from DWARF attributes should | |
9277 | also be interpreted as relative to the corresponding base offset. | |
9278 | ||
9279 | The table of sizes begins immediately following the table of offsets. | |
9280 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
9281 | with L columns and N rows, in row-major order. Each row in the array is | |
9282 | indexed starting from 1 (row 0 is shared by the two tables). | |
9283 | ||
9284 | --- | |
9285 | ||
9286 | Hash table lookup is handled the same in version 1 and 2: | |
9287 | ||
9288 | We assume that N and M will not exceed 2^32 - 1. | |
9289 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
9290 | ||
d2415c6c DE |
9291 | Given a 64-bit compilation unit signature or a type signature S, an entry |
9292 | in the hash table is located as follows: | |
80626a55 | 9293 | |
d2415c6c DE |
9294 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
9295 | the low-order k bits all set to 1. | |
80626a55 | 9296 | |
d2415c6c | 9297 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 9298 | |
d2415c6c DE |
9299 | 3) If the hash table entry at index H matches the signature, use that |
9300 | entry. If the hash table entry at index H is unused (all zeroes), | |
9301 | terminate the search: the signature is not present in the table. | |
80626a55 | 9302 | |
d2415c6c | 9303 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 9304 | |
d2415c6c | 9305 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 9306 | to stop at an unused slot or find the match. */ |
80626a55 DE |
9307 | |
9308 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
9309 | .debug_{info,types}.dwo in DWP_FILE. | |
9310 | Returns NULL if there isn't one. | |
9311 | Note: This function processes DWP files only, not DWO files. */ | |
9312 | ||
9313 | static struct dwp_hash_table * | |
9314 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
9315 | { | |
9316 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9317 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 9318 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 9319 | struct dwarf2_section_info *index; |
73869dc2 | 9320 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
9321 | struct dwp_hash_table *htab; |
9322 | ||
9323 | if (is_debug_types) | |
9324 | index = &dwp_file->sections.tu_index; | |
9325 | else | |
9326 | index = &dwp_file->sections.cu_index; | |
9327 | ||
9328 | if (dwarf2_section_empty_p (index)) | |
9329 | return NULL; | |
9330 | dwarf2_read_section (objfile, index); | |
9331 | ||
9332 | index_ptr = index->buffer; | |
9333 | index_end = index_ptr + index->size; | |
9334 | ||
9335 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
9336 | index_ptr += 4; |
9337 | if (version == 2) | |
9338 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
9339 | else | |
9340 | nr_columns = 0; | |
9341 | index_ptr += 4; | |
80626a55 DE |
9342 | nr_units = read_4_bytes (dbfd, index_ptr); |
9343 | index_ptr += 4; | |
9344 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
9345 | index_ptr += 4; | |
9346 | ||
73869dc2 | 9347 | if (version != 1 && version != 2) |
80626a55 | 9348 | { |
21aa081e | 9349 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 9350 | " [in module %s]"), |
21aa081e | 9351 | pulongest (version), dwp_file->name); |
80626a55 DE |
9352 | } |
9353 | if (nr_slots != (nr_slots & -nr_slots)) | |
9354 | { | |
21aa081e | 9355 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 9356 | " is not power of 2 [in module %s]"), |
21aa081e | 9357 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
9358 | } |
9359 | ||
9360 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
9361 | htab->version = version; |
9362 | htab->nr_columns = nr_columns; | |
80626a55 DE |
9363 | htab->nr_units = nr_units; |
9364 | htab->nr_slots = nr_slots; | |
9365 | htab->hash_table = index_ptr; | |
9366 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
9367 | |
9368 | /* Exit early if the table is empty. */ | |
9369 | if (nr_slots == 0 || nr_units == 0 | |
9370 | || (version == 2 && nr_columns == 0)) | |
9371 | { | |
9372 | /* All must be zero. */ | |
9373 | if (nr_slots != 0 || nr_units != 0 | |
9374 | || (version == 2 && nr_columns != 0)) | |
9375 | { | |
9376 | complaint (&symfile_complaints, | |
9377 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
9378 | " all zero [in modules %s]"), | |
9379 | dwp_file->name); | |
9380 | } | |
9381 | return htab; | |
9382 | } | |
9383 | ||
9384 | if (version == 1) | |
9385 | { | |
9386 | htab->section_pool.v1.indices = | |
9387 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9388 | /* It's harder to decide whether the section is too small in v1. | |
9389 | V1 is deprecated anyway so we punt. */ | |
9390 | } | |
9391 | else | |
9392 | { | |
9393 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9394 | int *ids = htab->section_pool.v2.section_ids; | |
9395 | /* Reverse map for error checking. */ | |
9396 | int ids_seen[DW_SECT_MAX + 1]; | |
9397 | int i; | |
9398 | ||
9399 | if (nr_columns < 2) | |
9400 | { | |
9401 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
9402 | " in section table [in module %s]"), | |
9403 | dwp_file->name); | |
9404 | } | |
9405 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
9406 | { | |
9407 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
9408 | " in section table [in module %s]"), | |
9409 | dwp_file->name); | |
9410 | } | |
9411 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9412 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9413 | for (i = 0; i < nr_columns; ++i) | |
9414 | { | |
9415 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
9416 | ||
9417 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
9418 | { | |
9419 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
9420 | " in section table [in module %s]"), | |
9421 | id, dwp_file->name); | |
9422 | } | |
9423 | if (ids_seen[id] != -1) | |
9424 | { | |
9425 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
9426 | " id %d in section table [in module %s]"), | |
9427 | id, dwp_file->name); | |
9428 | } | |
9429 | ids_seen[id] = i; | |
9430 | ids[i] = id; | |
9431 | } | |
9432 | /* Must have exactly one info or types section. */ | |
9433 | if (((ids_seen[DW_SECT_INFO] != -1) | |
9434 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
9435 | != 1) | |
9436 | { | |
9437 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
9438 | " DWO info/types section [in module %s]"), | |
9439 | dwp_file->name); | |
9440 | } | |
9441 | /* Must have an abbrev section. */ | |
9442 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
9443 | { | |
9444 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
9445 | " section [in module %s]"), | |
9446 | dwp_file->name); | |
9447 | } | |
9448 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
9449 | htab->section_pool.v2.sizes = | |
9450 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
9451 | * nr_units * nr_columns); | |
9452 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
9453 | * nr_units * nr_columns)) | |
9454 | > index_end) | |
9455 | { | |
9456 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
9457 | " [in module %s]"), | |
9458 | dwp_file->name); | |
9459 | } | |
9460 | } | |
80626a55 DE |
9461 | |
9462 | return htab; | |
9463 | } | |
9464 | ||
9465 | /* Update SECTIONS with the data from SECTP. | |
9466 | ||
9467 | This function is like the other "locate" section routines that are | |
9468 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 9469 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
9470 | |
9471 | The result is non-zero for success, or zero if an error was found. */ | |
9472 | ||
9473 | static int | |
73869dc2 DE |
9474 | locate_v1_virtual_dwo_sections (asection *sectp, |
9475 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
9476 | { |
9477 | const struct dwop_section_names *names = &dwop_section_names; | |
9478 | ||
9479 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
9480 | { | |
9481 | /* There can be only one. */ | |
73869dc2 | 9482 | if (sections->abbrev.s.asection != NULL) |
80626a55 | 9483 | return 0; |
73869dc2 | 9484 | sections->abbrev.s.asection = sectp; |
80626a55 DE |
9485 | sections->abbrev.size = bfd_get_section_size (sectp); |
9486 | } | |
9487 | else if (section_is_p (sectp->name, &names->info_dwo) | |
9488 | || section_is_p (sectp->name, &names->types_dwo)) | |
9489 | { | |
9490 | /* There can be only one. */ | |
73869dc2 | 9491 | if (sections->info_or_types.s.asection != NULL) |
80626a55 | 9492 | return 0; |
73869dc2 | 9493 | sections->info_or_types.s.asection = sectp; |
80626a55 DE |
9494 | sections->info_or_types.size = bfd_get_section_size (sectp); |
9495 | } | |
9496 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
9497 | { | |
9498 | /* There can be only one. */ | |
73869dc2 | 9499 | if (sections->line.s.asection != NULL) |
80626a55 | 9500 | return 0; |
73869dc2 | 9501 | sections->line.s.asection = sectp; |
80626a55 DE |
9502 | sections->line.size = bfd_get_section_size (sectp); |
9503 | } | |
9504 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
9505 | { | |
9506 | /* There can be only one. */ | |
73869dc2 | 9507 | if (sections->loc.s.asection != NULL) |
80626a55 | 9508 | return 0; |
73869dc2 | 9509 | sections->loc.s.asection = sectp; |
80626a55 DE |
9510 | sections->loc.size = bfd_get_section_size (sectp); |
9511 | } | |
9512 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
9513 | { | |
9514 | /* There can be only one. */ | |
73869dc2 | 9515 | if (sections->macinfo.s.asection != NULL) |
80626a55 | 9516 | return 0; |
73869dc2 | 9517 | sections->macinfo.s.asection = sectp; |
80626a55 DE |
9518 | sections->macinfo.size = bfd_get_section_size (sectp); |
9519 | } | |
9520 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
9521 | { | |
9522 | /* There can be only one. */ | |
73869dc2 | 9523 | if (sections->macro.s.asection != NULL) |
80626a55 | 9524 | return 0; |
73869dc2 | 9525 | sections->macro.s.asection = sectp; |
80626a55 DE |
9526 | sections->macro.size = bfd_get_section_size (sectp); |
9527 | } | |
9528 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
9529 | { | |
9530 | /* There can be only one. */ | |
73869dc2 | 9531 | if (sections->str_offsets.s.asection != NULL) |
80626a55 | 9532 | return 0; |
73869dc2 | 9533 | sections->str_offsets.s.asection = sectp; |
80626a55 DE |
9534 | sections->str_offsets.size = bfd_get_section_size (sectp); |
9535 | } | |
9536 | else | |
9537 | { | |
9538 | /* No other kind of section is valid. */ | |
9539 | return 0; | |
9540 | } | |
9541 | ||
9542 | return 1; | |
9543 | } | |
9544 | ||
73869dc2 DE |
9545 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
9546 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9547 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9548 | This is for DWP version 1 files. */ | |
80626a55 DE |
9549 | |
9550 | static struct dwo_unit * | |
73869dc2 DE |
9551 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
9552 | uint32_t unit_index, | |
9553 | const char *comp_dir, | |
9554 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
9555 | { |
9556 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
9557 | const struct dwp_hash_table *dwp_htab = |
9558 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
9559 | bfd *dbfd = dwp_file->dbfd; |
9560 | const char *kind = is_debug_types ? "TU" : "CU"; | |
9561 | struct dwo_file *dwo_file; | |
9562 | struct dwo_unit *dwo_unit; | |
73869dc2 | 9563 | struct virtual_v1_dwo_sections sections; |
80626a55 DE |
9564 | void **dwo_file_slot; |
9565 | char *virtual_dwo_name; | |
9566 | struct dwarf2_section_info *cutu; | |
9567 | struct cleanup *cleanups; | |
9568 | int i; | |
9569 | ||
73869dc2 DE |
9570 | gdb_assert (dwp_file->version == 1); |
9571 | ||
80626a55 DE |
9572 | if (dwarf2_read_debug) |
9573 | { | |
73869dc2 | 9574 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 9575 | kind, |
73869dc2 | 9576 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
9577 | dwp_file->name); |
9578 | } | |
9579 | ||
19ac8c2e | 9580 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
9581 | Put a limit on the number of sections we look for so that bad data |
9582 | doesn't cause us to loop forever. */ | |
9583 | ||
73869dc2 | 9584 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
9585 | (1 /* .debug_info or .debug_types */ \ |
9586 | + 1 /* .debug_abbrev */ \ | |
9587 | + 1 /* .debug_line */ \ | |
9588 | + 1 /* .debug_loc */ \ | |
9589 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 9590 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
9591 | + 1 /* trailing zero */) |
9592 | ||
9593 | memset (§ions, 0, sizeof (sections)); | |
9594 | cleanups = make_cleanup (null_cleanup, 0); | |
9595 | ||
73869dc2 | 9596 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
9597 | { |
9598 | asection *sectp; | |
9599 | uint32_t section_nr = | |
9600 | read_4_bytes (dbfd, | |
73869dc2 DE |
9601 | dwp_htab->section_pool.v1.indices |
9602 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
9603 | |
9604 | if (section_nr == 0) | |
9605 | break; | |
9606 | if (section_nr >= dwp_file->num_sections) | |
9607 | { | |
9608 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
9609 | " [in module %s]"), | |
9610 | dwp_file->name); | |
9611 | } | |
9612 | ||
9613 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 9614 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
9615 | { |
9616 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
9617 | " [in module %s]"), | |
9618 | dwp_file->name); | |
9619 | } | |
9620 | } | |
9621 | ||
9622 | if (i < 2 | |
a32a8923 DE |
9623 | || dwarf2_section_empty_p (§ions.info_or_types) |
9624 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
9625 | { |
9626 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
9627 | " [in module %s]"), | |
9628 | dwp_file->name); | |
9629 | } | |
73869dc2 | 9630 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
9631 | { |
9632 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
9633 | " [in module %s]"), | |
9634 | dwp_file->name); | |
9635 | } | |
9636 | ||
9637 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
9638 | have dwo_unit "live" in that. At least for now. | |
9639 | ||
9640 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 9641 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
9642 | file, we can combine them back into a virtual DWO file to save space |
9643 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
9644 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
9645 | ||
2792b94d PM |
9646 | virtual_dwo_name = |
9647 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
a32a8923 DE |
9648 | get_section_id (§ions.abbrev), |
9649 | get_section_id (§ions.line), | |
9650 | get_section_id (§ions.loc), | |
9651 | get_section_id (§ions.str_offsets)); | |
80626a55 DE |
9652 | make_cleanup (xfree, virtual_dwo_name); |
9653 | /* Can we use an existing virtual DWO file? */ | |
0ac5b59e | 9654 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); |
80626a55 DE |
9655 | /* Create one if necessary. */ |
9656 | if (*dwo_file_slot == NULL) | |
9657 | { | |
9658 | if (dwarf2_read_debug) | |
9659 | { | |
9660 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
9661 | virtual_dwo_name); | |
9662 | } | |
9663 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
9664 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, |
9665 | virtual_dwo_name, | |
9666 | strlen (virtual_dwo_name)); | |
9667 | dwo_file->comp_dir = comp_dir; | |
80626a55 DE |
9668 | dwo_file->sections.abbrev = sections.abbrev; |
9669 | dwo_file->sections.line = sections.line; | |
9670 | dwo_file->sections.loc = sections.loc; | |
9671 | dwo_file->sections.macinfo = sections.macinfo; | |
9672 | dwo_file->sections.macro = sections.macro; | |
9673 | dwo_file->sections.str_offsets = sections.str_offsets; | |
9674 | /* The "str" section is global to the entire DWP file. */ | |
9675 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 9676 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
9677 | there's no need to record it in dwo_file. |
9678 | Also, we can't simply record type sections in dwo_file because | |
9679 | we record a pointer into the vector in dwo_unit. As we collect more | |
9680 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
9681 | for it, invalidating all copies of pointers into the previous |
9682 | contents. */ | |
80626a55 DE |
9683 | *dwo_file_slot = dwo_file; |
9684 | } | |
9685 | else | |
9686 | { | |
9687 | if (dwarf2_read_debug) | |
9688 | { | |
9689 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
9690 | virtual_dwo_name); | |
9691 | } | |
9692 | dwo_file = *dwo_file_slot; | |
9693 | } | |
9694 | do_cleanups (cleanups); | |
9695 | ||
9696 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9697 | dwo_unit->dwo_file = dwo_file; | |
9698 | dwo_unit->signature = signature; | |
8a0459fd DE |
9699 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, |
9700 | sizeof (struct dwarf2_section_info)); | |
9701 | *dwo_unit->section = sections.info_or_types; | |
57d63ce2 | 9702 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
9703 | |
9704 | return dwo_unit; | |
9705 | } | |
9706 | ||
73869dc2 DE |
9707 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
9708 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
9709 | piece within that section used by a TU/CU, return a virtual section | |
9710 | of just that piece. */ | |
9711 | ||
9712 | static struct dwarf2_section_info | |
9713 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
9714 | bfd_size_type offset, bfd_size_type size) | |
9715 | { | |
9716 | struct dwarf2_section_info result; | |
9717 | asection *sectp; | |
9718 | ||
9719 | gdb_assert (section != NULL); | |
9720 | gdb_assert (!section->is_virtual); | |
9721 | ||
9722 | memset (&result, 0, sizeof (result)); | |
9723 | result.s.containing_section = section; | |
9724 | result.is_virtual = 1; | |
9725 | ||
9726 | if (size == 0) | |
9727 | return result; | |
9728 | ||
9729 | sectp = get_section_bfd_section (section); | |
9730 | ||
9731 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
9732 | bounds of the real section. This is a pretty-rare event, so just | |
9733 | flag an error (easier) instead of a warning and trying to cope. */ | |
9734 | if (sectp == NULL | |
9735 | || offset + size > bfd_get_section_size (sectp)) | |
9736 | { | |
9737 | bfd *abfd = sectp->owner; | |
9738 | ||
9739 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" | |
9740 | " in section %s [in module %s]"), | |
9741 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
9742 | objfile_name (dwarf2_per_objfile->objfile)); | |
9743 | } | |
9744 | ||
9745 | result.virtual_offset = offset; | |
9746 | result.size = size; | |
9747 | return result; | |
9748 | } | |
9749 | ||
9750 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
9751 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9752 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9753 | This is for DWP version 2 files. */ | |
9754 | ||
9755 | static struct dwo_unit * | |
9756 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
9757 | uint32_t unit_index, | |
9758 | const char *comp_dir, | |
9759 | ULONGEST signature, int is_debug_types) | |
9760 | { | |
9761 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9762 | const struct dwp_hash_table *dwp_htab = | |
9763 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
9764 | bfd *dbfd = dwp_file->dbfd; | |
9765 | const char *kind = is_debug_types ? "TU" : "CU"; | |
9766 | struct dwo_file *dwo_file; | |
9767 | struct dwo_unit *dwo_unit; | |
9768 | struct virtual_v2_dwo_sections sections; | |
9769 | void **dwo_file_slot; | |
9770 | char *virtual_dwo_name; | |
9771 | struct dwarf2_section_info *cutu; | |
9772 | struct cleanup *cleanups; | |
9773 | int i; | |
9774 | ||
9775 | gdb_assert (dwp_file->version == 2); | |
9776 | ||
9777 | if (dwarf2_read_debug) | |
9778 | { | |
9779 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
9780 | kind, | |
9781 | pulongest (unit_index), hex_string (signature), | |
9782 | dwp_file->name); | |
9783 | } | |
9784 | ||
9785 | /* Fetch the section offsets of this DWO unit. */ | |
9786 | ||
9787 | memset (§ions, 0, sizeof (sections)); | |
9788 | cleanups = make_cleanup (null_cleanup, 0); | |
9789 | ||
9790 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
9791 | { | |
9792 | uint32_t offset = read_4_bytes (dbfd, | |
9793 | dwp_htab->section_pool.v2.offsets | |
9794 | + (((unit_index - 1) * dwp_htab->nr_columns | |
9795 | + i) | |
9796 | * sizeof (uint32_t))); | |
9797 | uint32_t size = read_4_bytes (dbfd, | |
9798 | dwp_htab->section_pool.v2.sizes | |
9799 | + (((unit_index - 1) * dwp_htab->nr_columns | |
9800 | + i) | |
9801 | * sizeof (uint32_t))); | |
9802 | ||
9803 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
9804 | { | |
9805 | case DW_SECT_INFO: | |
9806 | case DW_SECT_TYPES: | |
9807 | sections.info_or_types_offset = offset; | |
9808 | sections.info_or_types_size = size; | |
9809 | break; | |
9810 | case DW_SECT_ABBREV: | |
9811 | sections.abbrev_offset = offset; | |
9812 | sections.abbrev_size = size; | |
9813 | break; | |
9814 | case DW_SECT_LINE: | |
9815 | sections.line_offset = offset; | |
9816 | sections.line_size = size; | |
9817 | break; | |
9818 | case DW_SECT_LOC: | |
9819 | sections.loc_offset = offset; | |
9820 | sections.loc_size = size; | |
9821 | break; | |
9822 | case DW_SECT_STR_OFFSETS: | |
9823 | sections.str_offsets_offset = offset; | |
9824 | sections.str_offsets_size = size; | |
9825 | break; | |
9826 | case DW_SECT_MACINFO: | |
9827 | sections.macinfo_offset = offset; | |
9828 | sections.macinfo_size = size; | |
9829 | break; | |
9830 | case DW_SECT_MACRO: | |
9831 | sections.macro_offset = offset; | |
9832 | sections.macro_size = size; | |
9833 | break; | |
9834 | } | |
9835 | } | |
9836 | ||
9837 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
9838 | have dwo_unit "live" in that. At least for now. | |
9839 | ||
9840 | The DWP file can be made up of a random collection of CUs and TUs. | |
9841 | However, for each CU + set of TUs that came from the same original DWO | |
9842 | file, we can combine them back into a virtual DWO file to save space | |
9843 | (fewer struct dwo_file objects to allocate). Remember that for really | |
9844 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
9845 | ||
9846 | virtual_dwo_name = | |
9847 | xstrprintf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
9848 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
9849 | (long) (sections.line_size ? sections.line_offset : 0), | |
9850 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
9851 | (long) (sections.str_offsets_size | |
9852 | ? sections.str_offsets_offset : 0)); | |
9853 | make_cleanup (xfree, virtual_dwo_name); | |
9854 | /* Can we use an existing virtual DWO file? */ | |
9855 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); | |
9856 | /* Create one if necessary. */ | |
9857 | if (*dwo_file_slot == NULL) | |
9858 | { | |
9859 | if (dwarf2_read_debug) | |
9860 | { | |
9861 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
9862 | virtual_dwo_name); | |
9863 | } | |
9864 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
9865 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, | |
9866 | virtual_dwo_name, | |
9867 | strlen (virtual_dwo_name)); | |
9868 | dwo_file->comp_dir = comp_dir; | |
9869 | dwo_file->sections.abbrev = | |
9870 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
9871 | sections.abbrev_offset, sections.abbrev_size); | |
9872 | dwo_file->sections.line = | |
9873 | create_dwp_v2_section (&dwp_file->sections.line, | |
9874 | sections.line_offset, sections.line_size); | |
9875 | dwo_file->sections.loc = | |
9876 | create_dwp_v2_section (&dwp_file->sections.loc, | |
9877 | sections.loc_offset, sections.loc_size); | |
9878 | dwo_file->sections.macinfo = | |
9879 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
9880 | sections.macinfo_offset, sections.macinfo_size); | |
9881 | dwo_file->sections.macro = | |
9882 | create_dwp_v2_section (&dwp_file->sections.macro, | |
9883 | sections.macro_offset, sections.macro_size); | |
9884 | dwo_file->sections.str_offsets = | |
9885 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
9886 | sections.str_offsets_offset, | |
9887 | sections.str_offsets_size); | |
9888 | /* The "str" section is global to the entire DWP file. */ | |
9889 | dwo_file->sections.str = dwp_file->sections.str; | |
9890 | /* The info or types section is assigned below to dwo_unit, | |
9891 | there's no need to record it in dwo_file. | |
9892 | Also, we can't simply record type sections in dwo_file because | |
9893 | we record a pointer into the vector in dwo_unit. As we collect more | |
9894 | types we'll grow the vector and eventually have to reallocate space | |
9895 | for it, invalidating all copies of pointers into the previous | |
9896 | contents. */ | |
9897 | *dwo_file_slot = dwo_file; | |
9898 | } | |
9899 | else | |
9900 | { | |
9901 | if (dwarf2_read_debug) | |
9902 | { | |
9903 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
9904 | virtual_dwo_name); | |
9905 | } | |
9906 | dwo_file = *dwo_file_slot; | |
9907 | } | |
9908 | do_cleanups (cleanups); | |
9909 | ||
9910 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9911 | dwo_unit->dwo_file = dwo_file; | |
9912 | dwo_unit->signature = signature; | |
9913 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, | |
9914 | sizeof (struct dwarf2_section_info)); | |
9915 | *dwo_unit->section = create_dwp_v2_section (is_debug_types | |
9916 | ? &dwp_file->sections.types | |
9917 | : &dwp_file->sections.info, | |
9918 | sections.info_or_types_offset, | |
9919 | sections.info_or_types_size); | |
9920 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
9921 | ||
9922 | return dwo_unit; | |
9923 | } | |
9924 | ||
57d63ce2 DE |
9925 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
9926 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
9927 | |
9928 | static struct dwo_unit * | |
57d63ce2 DE |
9929 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
9930 | ULONGEST signature, int is_debug_types) | |
80626a55 | 9931 | { |
57d63ce2 DE |
9932 | const struct dwp_hash_table *dwp_htab = |
9933 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 9934 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 9935 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
9936 | uint32_t hash = signature & mask; |
9937 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
9938 | unsigned int i; | |
9939 | void **slot; | |
9940 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
9941 | ||
9942 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
9943 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
9944 | slot = htab_find_slot (is_debug_types |
9945 | ? dwp_file->loaded_tus | |
9946 | : dwp_file->loaded_cus, | |
9947 | &find_dwo_cu, INSERT); | |
80626a55 DE |
9948 | |
9949 | if (*slot != NULL) | |
9950 | return *slot; | |
9951 | ||
9952 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 9953 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
9954 | { |
9955 | ULONGEST signature_in_table; | |
9956 | ||
9957 | signature_in_table = | |
57d63ce2 | 9958 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
9959 | if (signature_in_table == signature) |
9960 | { | |
57d63ce2 DE |
9961 | uint32_t unit_index = |
9962 | read_4_bytes (dbfd, | |
9963 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 9964 | |
73869dc2 DE |
9965 | if (dwp_file->version == 1) |
9966 | { | |
9967 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
9968 | comp_dir, signature, | |
9969 | is_debug_types); | |
9970 | } | |
9971 | else | |
9972 | { | |
9973 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
9974 | comp_dir, signature, | |
9975 | is_debug_types); | |
9976 | } | |
80626a55 DE |
9977 | return *slot; |
9978 | } | |
9979 | if (signature_in_table == 0) | |
9980 | return NULL; | |
9981 | hash = (hash + hash2) & mask; | |
9982 | } | |
9983 | ||
9984 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
9985 | " [in module %s]"), | |
9986 | dwp_file->name); | |
9987 | } | |
9988 | ||
ab5088bf | 9989 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
9990 | Open the file specified by FILE_NAME and hand it off to BFD for |
9991 | preliminary analysis. Return a newly initialized bfd *, which | |
9992 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 9993 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
9994 | SEARCH_CWD is true if the current directory is to be searched. |
9995 | It will be searched before debug-file-directory. | |
9996 | If unable to find/open the file, return NULL. | |
3019eac3 DE |
9997 | NOTE: This function is derived from symfile_bfd_open. */ |
9998 | ||
9999 | static bfd * | |
6ac97d4c | 10000 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 DE |
10001 | { |
10002 | bfd *sym_bfd; | |
80626a55 | 10003 | int desc, flags; |
3019eac3 | 10004 | char *absolute_name; |
9c02c129 DE |
10005 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
10006 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
10007 | to debug_file_directory. */ | |
10008 | char *search_path; | |
10009 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
10010 | ||
6ac97d4c DE |
10011 | if (search_cwd) |
10012 | { | |
10013 | if (*debug_file_directory != '\0') | |
10014 | search_path = concat (".", dirname_separator_string, | |
10015 | debug_file_directory, NULL); | |
10016 | else | |
10017 | search_path = xstrdup ("."); | |
10018 | } | |
9c02c129 | 10019 | else |
6ac97d4c | 10020 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 10021 | |
492c0ab7 | 10022 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
10023 | if (is_dwp) |
10024 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 10025 | desc = openp (search_path, flags, file_name, |
3019eac3 | 10026 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 10027 | xfree (search_path); |
3019eac3 DE |
10028 | if (desc < 0) |
10029 | return NULL; | |
10030 | ||
bb397797 | 10031 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
a4453b7e | 10032 | xfree (absolute_name); |
9c02c129 DE |
10033 | if (sym_bfd == NULL) |
10034 | return NULL; | |
3019eac3 DE |
10035 | bfd_set_cacheable (sym_bfd, 1); |
10036 | ||
10037 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
10038 | { | |
cbb099e8 | 10039 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
10040 | return NULL; |
10041 | } | |
10042 | ||
3019eac3 DE |
10043 | return sym_bfd; |
10044 | } | |
10045 | ||
ab5088bf | 10046 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
10047 | COMP_DIR is the DW_AT_comp_dir attribute. |
10048 | The result is the bfd handle of the file. | |
10049 | If there is a problem finding or opening the file, return NULL. | |
10050 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10051 | same as symfile_bfd_open. */ | |
10052 | ||
10053 | static bfd * | |
ab5088bf | 10054 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 DE |
10055 | { |
10056 | bfd *abfd; | |
3019eac3 | 10057 | |
80626a55 | 10058 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 10059 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
10060 | |
10061 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
10062 | ||
10063 | if (comp_dir != NULL) | |
10064 | { | |
80626a55 | 10065 | char *path_to_try = concat (comp_dir, SLASH_STRING, file_name, NULL); |
3019eac3 DE |
10066 | |
10067 | /* NOTE: If comp_dir is a relative path, this will also try the | |
10068 | search path, which seems useful. */ | |
6ac97d4c | 10069 | abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10070 | xfree (path_to_try); |
10071 | if (abfd != NULL) | |
10072 | return abfd; | |
10073 | } | |
10074 | ||
10075 | /* That didn't work, try debug-file-directory, which, despite its name, | |
10076 | is a list of paths. */ | |
10077 | ||
10078 | if (*debug_file_directory == '\0') | |
10079 | return NULL; | |
10080 | ||
6ac97d4c | 10081 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10082 | } |
10083 | ||
80626a55 DE |
10084 | /* This function is mapped across the sections and remembers the offset and |
10085 | size of each of the DWO debugging sections we are interested in. */ | |
10086 | ||
10087 | static void | |
10088 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
10089 | { | |
10090 | struct dwo_sections *dwo_sections = dwo_sections_ptr; | |
10091 | const struct dwop_section_names *names = &dwop_section_names; | |
10092 | ||
10093 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10094 | { | |
73869dc2 | 10095 | dwo_sections->abbrev.s.asection = sectp; |
80626a55 DE |
10096 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
10097 | } | |
10098 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10099 | { | |
73869dc2 | 10100 | dwo_sections->info.s.asection = sectp; |
80626a55 DE |
10101 | dwo_sections->info.size = bfd_get_section_size (sectp); |
10102 | } | |
10103 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10104 | { | |
73869dc2 | 10105 | dwo_sections->line.s.asection = sectp; |
80626a55 DE |
10106 | dwo_sections->line.size = bfd_get_section_size (sectp); |
10107 | } | |
10108 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10109 | { | |
73869dc2 | 10110 | dwo_sections->loc.s.asection = sectp; |
80626a55 DE |
10111 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
10112 | } | |
10113 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10114 | { | |
73869dc2 | 10115 | dwo_sections->macinfo.s.asection = sectp; |
80626a55 DE |
10116 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
10117 | } | |
10118 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10119 | { | |
73869dc2 | 10120 | dwo_sections->macro.s.asection = sectp; |
80626a55 DE |
10121 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
10122 | } | |
10123 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
10124 | { | |
73869dc2 | 10125 | dwo_sections->str.s.asection = sectp; |
80626a55 DE |
10126 | dwo_sections->str.size = bfd_get_section_size (sectp); |
10127 | } | |
10128 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10129 | { | |
73869dc2 | 10130 | dwo_sections->str_offsets.s.asection = sectp; |
80626a55 DE |
10131 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
10132 | } | |
10133 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10134 | { | |
10135 | struct dwarf2_section_info type_section; | |
10136 | ||
10137 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 10138 | type_section.s.asection = sectp; |
80626a55 DE |
10139 | type_section.size = bfd_get_section_size (sectp); |
10140 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
10141 | &type_section); | |
10142 | } | |
10143 | } | |
10144 | ||
ab5088bf | 10145 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 10146 | by PER_CU. This is for the non-DWP case. |
80626a55 | 10147 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
10148 | |
10149 | static struct dwo_file * | |
0ac5b59e DE |
10150 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
10151 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
10152 | { |
10153 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10154 | struct dwo_file *dwo_file; |
10155 | bfd *dbfd; | |
3019eac3 DE |
10156 | struct cleanup *cleanups; |
10157 | ||
ab5088bf | 10158 | dbfd = open_dwo_file (dwo_name, comp_dir); |
80626a55 DE |
10159 | if (dbfd == NULL) |
10160 | { | |
10161 | if (dwarf2_read_debug) | |
10162 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); | |
10163 | return NULL; | |
10164 | } | |
10165 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10166 | dwo_file->dwo_name = dwo_name; |
10167 | dwo_file->comp_dir = comp_dir; | |
80626a55 | 10168 | dwo_file->dbfd = dbfd; |
3019eac3 DE |
10169 | |
10170 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
10171 | ||
80626a55 | 10172 | bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections); |
3019eac3 | 10173 | |
19c3d4c9 | 10174 | dwo_file->cu = create_dwo_cu (dwo_file); |
3019eac3 DE |
10175 | |
10176 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
10177 | dwo_file->sections.types); | |
10178 | ||
10179 | discard_cleanups (cleanups); | |
10180 | ||
80626a55 DE |
10181 | if (dwarf2_read_debug) |
10182 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); | |
10183 | ||
3019eac3 DE |
10184 | return dwo_file; |
10185 | } | |
10186 | ||
80626a55 | 10187 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
10188 | size of each of the DWP debugging sections common to version 1 and 2 that |
10189 | we are interested in. */ | |
3019eac3 | 10190 | |
80626a55 | 10191 | static void |
73869dc2 DE |
10192 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
10193 | void *dwp_file_ptr) | |
3019eac3 | 10194 | { |
80626a55 DE |
10195 | struct dwp_file *dwp_file = dwp_file_ptr; |
10196 | const struct dwop_section_names *names = &dwop_section_names; | |
10197 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 10198 | |
80626a55 | 10199 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 10200 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
10201 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
10202 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 10203 | |
80626a55 DE |
10204 | /* Look for specific sections that we need. */ |
10205 | if (section_is_p (sectp->name, &names->str_dwo)) | |
10206 | { | |
73869dc2 | 10207 | dwp_file->sections.str.s.asection = sectp; |
80626a55 DE |
10208 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
10209 | } | |
10210 | else if (section_is_p (sectp->name, &names->cu_index)) | |
10211 | { | |
73869dc2 | 10212 | dwp_file->sections.cu_index.s.asection = sectp; |
80626a55 DE |
10213 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
10214 | } | |
10215 | else if (section_is_p (sectp->name, &names->tu_index)) | |
10216 | { | |
73869dc2 | 10217 | dwp_file->sections.tu_index.s.asection = sectp; |
80626a55 DE |
10218 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
10219 | } | |
10220 | } | |
3019eac3 | 10221 | |
73869dc2 DE |
10222 | /* This function is mapped across the sections and remembers the offset and |
10223 | size of each of the DWP version 2 debugging sections that we are interested | |
10224 | in. This is split into a separate function because we don't know if we | |
10225 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
10226 | ||
10227 | static void | |
10228 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
10229 | { | |
10230 | struct dwp_file *dwp_file = dwp_file_ptr; | |
10231 | const struct dwop_section_names *names = &dwop_section_names; | |
10232 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
10233 | ||
10234 | /* Record the ELF section number for later lookup: this is what the | |
10235 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
10236 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
10237 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
10238 | ||
10239 | /* Look for specific sections that we need. */ | |
10240 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10241 | { | |
10242 | dwp_file->sections.abbrev.s.asection = sectp; | |
10243 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
10244 | } | |
10245 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10246 | { | |
10247 | dwp_file->sections.info.s.asection = sectp; | |
10248 | dwp_file->sections.info.size = bfd_get_section_size (sectp); | |
10249 | } | |
10250 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10251 | { | |
10252 | dwp_file->sections.line.s.asection = sectp; | |
10253 | dwp_file->sections.line.size = bfd_get_section_size (sectp); | |
10254 | } | |
10255 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10256 | { | |
10257 | dwp_file->sections.loc.s.asection = sectp; | |
10258 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); | |
10259 | } | |
10260 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10261 | { | |
10262 | dwp_file->sections.macinfo.s.asection = sectp; | |
10263 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); | |
10264 | } | |
10265 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10266 | { | |
10267 | dwp_file->sections.macro.s.asection = sectp; | |
10268 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); | |
10269 | } | |
10270 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10271 | { | |
10272 | dwp_file->sections.str_offsets.s.asection = sectp; | |
10273 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
10274 | } | |
10275 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10276 | { | |
10277 | dwp_file->sections.types.s.asection = sectp; | |
10278 | dwp_file->sections.types.size = bfd_get_section_size (sectp); | |
10279 | } | |
10280 | } | |
10281 | ||
80626a55 | 10282 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10283 | |
80626a55 DE |
10284 | static hashval_t |
10285 | hash_dwp_loaded_cutus (const void *item) | |
10286 | { | |
10287 | const struct dwo_unit *dwo_unit = item; | |
3019eac3 | 10288 | |
80626a55 DE |
10289 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
10290 | return dwo_unit->signature; | |
3019eac3 DE |
10291 | } |
10292 | ||
80626a55 | 10293 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10294 | |
80626a55 DE |
10295 | static int |
10296 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 10297 | { |
80626a55 DE |
10298 | const struct dwo_unit *dua = a; |
10299 | const struct dwo_unit *dub = b; | |
3019eac3 | 10300 | |
80626a55 DE |
10301 | return dua->signature == dub->signature; |
10302 | } | |
3019eac3 | 10303 | |
80626a55 | 10304 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10305 | |
80626a55 DE |
10306 | static htab_t |
10307 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
10308 | { | |
10309 | return htab_create_alloc_ex (3, | |
10310 | hash_dwp_loaded_cutus, | |
10311 | eq_dwp_loaded_cutus, | |
10312 | NULL, | |
10313 | &objfile->objfile_obstack, | |
10314 | hashtab_obstack_allocate, | |
10315 | dummy_obstack_deallocate); | |
10316 | } | |
3019eac3 | 10317 | |
ab5088bf DE |
10318 | /* Try to open DWP file FILE_NAME. |
10319 | The result is the bfd handle of the file. | |
10320 | If there is a problem finding or opening the file, return NULL. | |
10321 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10322 | same as symfile_bfd_open. */ | |
10323 | ||
10324 | static bfd * | |
10325 | open_dwp_file (const char *file_name) | |
10326 | { | |
6ac97d4c DE |
10327 | bfd *abfd; |
10328 | ||
10329 | abfd = try_open_dwop_file (file_name, 1 /*is_dwp*/, 1 /*search_cwd*/); | |
10330 | if (abfd != NULL) | |
10331 | return abfd; | |
10332 | ||
10333 | /* Work around upstream bug 15652. | |
10334 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
10335 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
10336 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
10337 | of the executable's path may have discarded the needed info. | |
10338 | [IWBN if the dwp file name was recorded in the executable, akin to | |
10339 | .gnu_debuglink, but that doesn't exist yet.] | |
10340 | Strip the directory from FILE_NAME and search again. */ | |
10341 | if (*debug_file_directory != '\0') | |
10342 | { | |
10343 | /* Don't implicitly search the current directory here. | |
10344 | If the user wants to search "." to handle this case, | |
10345 | it must be added to debug-file-directory. */ | |
10346 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
10347 | 0 /*search_cwd*/); | |
10348 | } | |
10349 | ||
10350 | return NULL; | |
ab5088bf DE |
10351 | } |
10352 | ||
80626a55 DE |
10353 | /* Initialize the use of the DWP file for the current objfile. |
10354 | By convention the name of the DWP file is ${objfile}.dwp. | |
10355 | The result is NULL if it can't be found. */ | |
a766d390 | 10356 | |
80626a55 | 10357 | static struct dwp_file * |
ab5088bf | 10358 | open_and_init_dwp_file (void) |
80626a55 DE |
10359 | { |
10360 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10361 | struct dwp_file *dwp_file; | |
10362 | char *dwp_name; | |
10363 | bfd *dbfd; | |
10364 | struct cleanup *cleanups; | |
10365 | ||
82bf32bc JK |
10366 | /* Try to find first .dwp for the binary file before any symbolic links |
10367 | resolving. */ | |
10368 | dwp_name = xstrprintf ("%s.dwp", objfile->original_name); | |
80626a55 DE |
10369 | cleanups = make_cleanup (xfree, dwp_name); |
10370 | ||
ab5088bf | 10371 | dbfd = open_dwp_file (dwp_name); |
82bf32bc JK |
10372 | if (dbfd == NULL |
10373 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
10374 | { | |
10375 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
10376 | dwp_name = xstrprintf ("%s.dwp", objfile_name (objfile)); | |
10377 | make_cleanup (xfree, dwp_name); | |
10378 | dbfd = open_dwp_file (dwp_name); | |
10379 | } | |
10380 | ||
80626a55 DE |
10381 | if (dbfd == NULL) |
10382 | { | |
10383 | if (dwarf2_read_debug) | |
10384 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); | |
10385 | do_cleanups (cleanups); | |
10386 | return NULL; | |
3019eac3 | 10387 | } |
80626a55 | 10388 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
93417882 | 10389 | dwp_file->name = bfd_get_filename (dbfd); |
80626a55 DE |
10390 | dwp_file->dbfd = dbfd; |
10391 | do_cleanups (cleanups); | |
c906108c | 10392 | |
80626a55 DE |
10393 | /* +1: section 0 is unused */ |
10394 | dwp_file->num_sections = bfd_count_sections (dbfd) + 1; | |
10395 | dwp_file->elf_sections = | |
10396 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
10397 | dwp_file->num_sections, asection *); | |
10398 | ||
73869dc2 | 10399 | bfd_map_over_sections (dbfd, dwarf2_locate_common_dwp_sections, dwp_file); |
80626a55 DE |
10400 | |
10401 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
10402 | ||
10403 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
10404 | ||
73869dc2 DE |
10405 | /* The DWP file version is stored in the hash table. Oh well. */ |
10406 | if (dwp_file->cus->version != dwp_file->tus->version) | |
10407 | { | |
10408 | /* Technically speaking, we should try to limp along, but this is | |
10409 | pretty bizarre. */ | |
10410 | error (_("Dwarf Error: DWP file CU version %d doesn't match" | |
10411 | " TU version %d [in DWP file %s]"), | |
10412 | dwp_file->cus->version, dwp_file->tus->version, dwp_name); | |
10413 | } | |
10414 | dwp_file->version = dwp_file->cus->version; | |
10415 | ||
10416 | if (dwp_file->version == 2) | |
10417 | bfd_map_over_sections (dbfd, dwarf2_locate_v2_dwp_sections, dwp_file); | |
10418 | ||
19ac8c2e DE |
10419 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
10420 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 10421 | |
80626a55 DE |
10422 | if (dwarf2_read_debug) |
10423 | { | |
10424 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
10425 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
10426 | " %s CUs, %s TUs\n", |
10427 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
10428 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
10429 | } |
10430 | ||
10431 | return dwp_file; | |
3019eac3 | 10432 | } |
c906108c | 10433 | |
ab5088bf DE |
10434 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
10435 | ||
10436 | static struct dwp_file * | |
10437 | get_dwp_file (void) | |
10438 | { | |
10439 | if (! dwarf2_per_objfile->dwp_checked) | |
10440 | { | |
10441 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
10442 | dwarf2_per_objfile->dwp_checked = 1; | |
10443 | } | |
10444 | return dwarf2_per_objfile->dwp_file; | |
10445 | } | |
10446 | ||
80626a55 DE |
10447 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
10448 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
10449 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 10450 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
10451 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
10452 | ||
10453 | This is called, for example, when wanting to read a variable with a | |
10454 | complex location. Therefore we don't want to do file i/o for every call. | |
10455 | Therefore we don't want to look for a DWO file on every call. | |
10456 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
10457 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
10458 | for a DWO file. | |
10459 | ||
1c658ad5 | 10460 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 10461 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 10462 | |
3019eac3 | 10463 | static struct dwo_unit * |
80626a55 DE |
10464 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
10465 | const char *dwo_name, const char *comp_dir, | |
10466 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
10467 | { |
10468 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10469 | const char *kind = is_debug_types ? "TU" : "CU"; |
10470 | void **dwo_file_slot; | |
3019eac3 | 10471 | struct dwo_file *dwo_file; |
80626a55 | 10472 | struct dwp_file *dwp_file; |
cb1df416 | 10473 | |
6a506a2d DE |
10474 | /* First see if there's a DWP file. |
10475 | If we have a DWP file but didn't find the DWO inside it, don't | |
10476 | look for the original DWO file. It makes gdb behave differently | |
10477 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 10478 | |
ab5088bf | 10479 | dwp_file = get_dwp_file (); |
80626a55 | 10480 | if (dwp_file != NULL) |
cf2c3c16 | 10481 | { |
80626a55 DE |
10482 | const struct dwp_hash_table *dwp_htab = |
10483 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10484 | ||
10485 | if (dwp_htab != NULL) | |
10486 | { | |
10487 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
10488 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
10489 | signature, is_debug_types); | |
80626a55 DE |
10490 | |
10491 | if (dwo_cutu != NULL) | |
10492 | { | |
10493 | if (dwarf2_read_debug) | |
10494 | { | |
10495 | fprintf_unfiltered (gdb_stdlog, | |
10496 | "Virtual DWO %s %s found: @%s\n", | |
10497 | kind, hex_string (signature), | |
10498 | host_address_to_string (dwo_cutu)); | |
10499 | } | |
10500 | return dwo_cutu; | |
10501 | } | |
10502 | } | |
10503 | } | |
6a506a2d | 10504 | else |
80626a55 | 10505 | { |
6a506a2d | 10506 | /* No DWP file, look for the DWO file. */ |
80626a55 | 10507 | |
6a506a2d DE |
10508 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
10509 | if (*dwo_file_slot == NULL) | |
80626a55 | 10510 | { |
6a506a2d DE |
10511 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
10512 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 10513 | } |
6a506a2d DE |
10514 | /* NOTE: This will be NULL if unable to open the file. */ |
10515 | dwo_file = *dwo_file_slot; | |
3019eac3 | 10516 | |
6a506a2d | 10517 | if (dwo_file != NULL) |
19c3d4c9 | 10518 | { |
6a506a2d DE |
10519 | struct dwo_unit *dwo_cutu = NULL; |
10520 | ||
10521 | if (is_debug_types && dwo_file->tus) | |
10522 | { | |
10523 | struct dwo_unit find_dwo_cutu; | |
10524 | ||
10525 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
10526 | find_dwo_cutu.signature = signature; | |
10527 | dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu); | |
10528 | } | |
10529 | else if (!is_debug_types && dwo_file->cu) | |
80626a55 | 10530 | { |
6a506a2d DE |
10531 | if (signature == dwo_file->cu->signature) |
10532 | dwo_cutu = dwo_file->cu; | |
10533 | } | |
10534 | ||
10535 | if (dwo_cutu != NULL) | |
10536 | { | |
10537 | if (dwarf2_read_debug) | |
10538 | { | |
10539 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
10540 | kind, dwo_name, hex_string (signature), | |
10541 | host_address_to_string (dwo_cutu)); | |
10542 | } | |
10543 | return dwo_cutu; | |
80626a55 DE |
10544 | } |
10545 | } | |
2e276125 | 10546 | } |
9cdd5dbd | 10547 | |
80626a55 DE |
10548 | /* We didn't find it. This could mean a dwo_id mismatch, or |
10549 | someone deleted the DWO/DWP file, or the search path isn't set up | |
10550 | correctly to find the file. */ | |
10551 | ||
10552 | if (dwarf2_read_debug) | |
10553 | { | |
10554 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
10555 | kind, dwo_name, hex_string (signature)); | |
10556 | } | |
3019eac3 | 10557 | |
6656a72d DE |
10558 | /* This is a warning and not a complaint because it can be caused by |
10559 | pilot error (e.g., user accidentally deleting the DWO). */ | |
10560 | warning (_("Could not find DWO %s %s(%s) referenced by %s at offset 0x%x" | |
10561 | " [in module %s]"), | |
10562 | kind, dwo_name, hex_string (signature), | |
10563 | this_unit->is_debug_types ? "TU" : "CU", | |
4262abfb | 10564 | this_unit->offset.sect_off, objfile_name (objfile)); |
3019eac3 | 10565 | return NULL; |
5fb290d7 DJ |
10566 | } |
10567 | ||
80626a55 DE |
10568 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
10569 | See lookup_dwo_cutu_unit for details. */ | |
10570 | ||
10571 | static struct dwo_unit * | |
10572 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
10573 | const char *dwo_name, const char *comp_dir, | |
10574 | ULONGEST signature) | |
10575 | { | |
10576 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
10577 | } | |
10578 | ||
10579 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
10580 | See lookup_dwo_cutu_unit for details. */ | |
10581 | ||
10582 | static struct dwo_unit * | |
10583 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
10584 | const char *dwo_name, const char *comp_dir) | |
10585 | { | |
10586 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
10587 | } | |
10588 | ||
89e63ee4 DE |
10589 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
10590 | ||
10591 | static int | |
10592 | queue_and_load_dwo_tu (void **slot, void *info) | |
10593 | { | |
10594 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
10595 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
10596 | ULONGEST signature = dwo_unit->signature; | |
10597 | struct signatured_type *sig_type = | |
10598 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
10599 | ||
10600 | if (sig_type != NULL) | |
10601 | { | |
10602 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
10603 | ||
10604 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
10605 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
10606 | while processing PER_CU. */ | |
10607 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
10608 | load_full_type_unit (sig_cu); | |
10609 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
10610 | } | |
10611 | ||
10612 | return 1; | |
10613 | } | |
10614 | ||
10615 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
10616 | The DWO may have the only definition of the type, though it may not be | |
10617 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
10618 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
10619 | ||
10620 | static void | |
10621 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
10622 | { | |
10623 | struct dwo_unit *dwo_unit; | |
10624 | struct dwo_file *dwo_file; | |
10625 | ||
10626 | gdb_assert (!per_cu->is_debug_types); | |
10627 | gdb_assert (get_dwp_file () == NULL); | |
10628 | gdb_assert (per_cu->cu != NULL); | |
10629 | ||
10630 | dwo_unit = per_cu->cu->dwo_unit; | |
10631 | gdb_assert (dwo_unit != NULL); | |
10632 | ||
10633 | dwo_file = dwo_unit->dwo_file; | |
10634 | if (dwo_file->tus != NULL) | |
10635 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
10636 | } | |
10637 | ||
3019eac3 DE |
10638 | /* Free all resources associated with DWO_FILE. |
10639 | Close the DWO file and munmap the sections. | |
10640 | All memory should be on the objfile obstack. */ | |
348e048f DE |
10641 | |
10642 | static void | |
3019eac3 | 10643 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 10644 | { |
3019eac3 DE |
10645 | int ix; |
10646 | struct dwarf2_section_info *section; | |
348e048f | 10647 | |
5c6fa7ab | 10648 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 10649 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 10650 | |
3019eac3 DE |
10651 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
10652 | } | |
348e048f | 10653 | |
3019eac3 | 10654 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 10655 | |
3019eac3 DE |
10656 | static void |
10657 | free_dwo_file_cleanup (void *arg) | |
10658 | { | |
10659 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
10660 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 10661 | |
3019eac3 DE |
10662 | free_dwo_file (dwo_file, objfile); |
10663 | } | |
348e048f | 10664 | |
3019eac3 | 10665 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 10666 | |
3019eac3 DE |
10667 | static int |
10668 | free_dwo_file_from_slot (void **slot, void *info) | |
10669 | { | |
10670 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
10671 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 10672 | |
3019eac3 | 10673 | free_dwo_file (dwo_file, objfile); |
348e048f | 10674 | |
3019eac3 DE |
10675 | return 1; |
10676 | } | |
348e048f | 10677 | |
3019eac3 | 10678 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 10679 | |
3019eac3 DE |
10680 | static void |
10681 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
10682 | { | |
10683 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 10684 | } |
3019eac3 DE |
10685 | \f |
10686 | /* Read in various DIEs. */ | |
348e048f | 10687 | |
d389af10 JK |
10688 | /* qsort helper for inherit_abstract_dies. */ |
10689 | ||
10690 | static int | |
10691 | unsigned_int_compar (const void *ap, const void *bp) | |
10692 | { | |
10693 | unsigned int a = *(unsigned int *) ap; | |
10694 | unsigned int b = *(unsigned int *) bp; | |
10695 | ||
10696 | return (a > b) - (b > a); | |
10697 | } | |
10698 | ||
10699 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
10700 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
10701 | already referenced by DW_AT_abstract_origin from the children of the | |
10702 | current DIE. */ | |
d389af10 JK |
10703 | |
10704 | static void | |
10705 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
10706 | { | |
10707 | struct die_info *child_die; | |
10708 | unsigned die_children_count; | |
10709 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
10710 | sect_offset *offsets; |
10711 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
10712 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
10713 | struct die_info *origin_die; | |
10714 | /* Iterator of the ORIGIN_DIE children. */ | |
10715 | struct die_info *origin_child_die; | |
10716 | struct cleanup *cleanups; | |
10717 | struct attribute *attr; | |
cd02d79d PA |
10718 | struct dwarf2_cu *origin_cu; |
10719 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
10720 | |
10721 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
10722 | if (!attr) | |
10723 | return; | |
10724 | ||
cd02d79d PA |
10725 | /* Note that following die references may follow to a die in a |
10726 | different cu. */ | |
10727 | ||
10728 | origin_cu = cu; | |
10729 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
10730 | ||
10731 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
10732 | symbols in. */ | |
10733 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
10734 | origin_cu->list_in_scope = cu->list_in_scope; | |
10735 | ||
edb3359d DJ |
10736 | if (die->tag != origin_die->tag |
10737 | && !(die->tag == DW_TAG_inlined_subroutine | |
10738 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
10739 | complaint (&symfile_complaints, |
10740 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 10741 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
10742 | |
10743 | child_die = die->child; | |
10744 | die_children_count = 0; | |
10745 | while (child_die && child_die->tag) | |
10746 | { | |
10747 | child_die = sibling_die (child_die); | |
10748 | die_children_count++; | |
10749 | } | |
10750 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
10751 | cleanups = make_cleanup (xfree, offsets); | |
10752 | ||
10753 | offsets_end = offsets; | |
10754 | child_die = die->child; | |
10755 | while (child_die && child_die->tag) | |
10756 | { | |
c38f313d DJ |
10757 | /* For each CHILD_DIE, find the corresponding child of |
10758 | ORIGIN_DIE. If there is more than one layer of | |
10759 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
10760 | but GCC versions at least through 4.4 generate this (GCC PR | |
10761 | 40573). */ | |
10762 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 10763 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 10764 | |
c38f313d DJ |
10765 | while (1) |
10766 | { | |
cd02d79d PA |
10767 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
10768 | child_origin_cu); | |
c38f313d DJ |
10769 | if (attr == NULL) |
10770 | break; | |
cd02d79d PA |
10771 | child_origin_die = follow_die_ref (child_origin_die, attr, |
10772 | &child_origin_cu); | |
c38f313d DJ |
10773 | } |
10774 | ||
d389af10 JK |
10775 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
10776 | counterpart may exist. */ | |
c38f313d | 10777 | if (child_origin_die != child_die) |
d389af10 | 10778 | { |
edb3359d DJ |
10779 | if (child_die->tag != child_origin_die->tag |
10780 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
10781 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
10782 | complaint (&symfile_complaints, |
10783 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
10784 | "different tags"), child_die->offset.sect_off, |
10785 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
10786 | if (child_origin_die->parent != origin_die) |
10787 | complaint (&symfile_complaints, | |
10788 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
10789 | "different parents"), child_die->offset.sect_off, |
10790 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
10791 | else |
10792 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
10793 | } |
10794 | child_die = sibling_die (child_die); | |
10795 | } | |
10796 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
10797 | unsigned_int_compar); | |
10798 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 10799 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
10800 | complaint (&symfile_complaints, |
10801 | _("Multiple children of DIE 0x%x refer " | |
10802 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 10803 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
10804 | |
10805 | offsetp = offsets; | |
10806 | origin_child_die = origin_die->child; | |
10807 | while (origin_child_die && origin_child_die->tag) | |
10808 | { | |
10809 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
10810 | while (offsetp < offsets_end |
10811 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 10812 | offsetp++; |
b64f50a1 JK |
10813 | if (offsetp >= offsets_end |
10814 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
10815 | { |
10816 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 10817 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
10818 | } |
10819 | origin_child_die = sibling_die (origin_child_die); | |
10820 | } | |
cd02d79d | 10821 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
10822 | |
10823 | do_cleanups (cleanups); | |
10824 | } | |
10825 | ||
c906108c | 10826 | static void |
e7c27a73 | 10827 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10828 | { |
e7c27a73 | 10829 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 10830 | struct context_stack *new; |
c906108c SS |
10831 | CORE_ADDR lowpc; |
10832 | CORE_ADDR highpc; | |
10833 | struct die_info *child_die; | |
edb3359d | 10834 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 10835 | const char *name; |
e142c38c | 10836 | CORE_ADDR baseaddr; |
801e3a5b | 10837 | struct block *block; |
edb3359d | 10838 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
10839 | VEC (symbolp) *template_args = NULL; |
10840 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
10841 | |
10842 | if (inlined_func) | |
10843 | { | |
10844 | /* If we do not have call site information, we can't show the | |
10845 | caller of this inlined function. That's too confusing, so | |
10846 | only use the scope for local variables. */ | |
10847 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
10848 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
10849 | if (call_line == NULL || call_file == NULL) | |
10850 | { | |
10851 | read_lexical_block_scope (die, cu); | |
10852 | return; | |
10853 | } | |
10854 | } | |
c906108c | 10855 | |
e142c38c DJ |
10856 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
10857 | ||
94af9270 | 10858 | name = dwarf2_name (die, cu); |
c906108c | 10859 | |
e8d05480 JB |
10860 | /* Ignore functions with missing or empty names. These are actually |
10861 | illegal according to the DWARF standard. */ | |
10862 | if (name == NULL) | |
10863 | { | |
10864 | complaint (&symfile_complaints, | |
b64f50a1 JK |
10865 | _("missing name for subprogram DIE at %d"), |
10866 | die->offset.sect_off); | |
e8d05480 JB |
10867 | return; |
10868 | } | |
10869 | ||
10870 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
10871 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
10872 | { | |
ae4d0c03 PM |
10873 | attr = dwarf2_attr (die, DW_AT_external, cu); |
10874 | if (!attr || !DW_UNSND (attr)) | |
10875 | complaint (&symfile_complaints, | |
3e43a32a MS |
10876 | _("cannot get low and high bounds " |
10877 | "for subprogram DIE at %d"), | |
b64f50a1 | 10878 | die->offset.sect_off); |
e8d05480 JB |
10879 | return; |
10880 | } | |
c906108c SS |
10881 | |
10882 | lowpc += baseaddr; | |
10883 | highpc += baseaddr; | |
10884 | ||
34eaf542 TT |
10885 | /* If we have any template arguments, then we must allocate a |
10886 | different sort of symbol. */ | |
10887 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
10888 | { | |
10889 | if (child_die->tag == DW_TAG_template_type_param | |
10890 | || child_die->tag == DW_TAG_template_value_param) | |
10891 | { | |
e623cf5d | 10892 | templ_func = allocate_template_symbol (objfile); |
34eaf542 TT |
10893 | templ_func->base.is_cplus_template_function = 1; |
10894 | break; | |
10895 | } | |
10896 | } | |
10897 | ||
c906108c | 10898 | new = push_context (0, lowpc); |
34eaf542 TT |
10899 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
10900 | (struct symbol *) templ_func); | |
4c2df51b | 10901 | |
4cecd739 DJ |
10902 | /* If there is a location expression for DW_AT_frame_base, record |
10903 | it. */ | |
e142c38c | 10904 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 10905 | if (attr) |
f1e6e072 | 10906 | dwarf2_symbol_mark_computed (attr, new->name, cu, 1); |
4c2df51b | 10907 | |
e142c38c | 10908 | cu->list_in_scope = &local_symbols; |
c906108c | 10909 | |
639d11d3 | 10910 | if (die->child != NULL) |
c906108c | 10911 | { |
639d11d3 | 10912 | child_die = die->child; |
c906108c SS |
10913 | while (child_die && child_die->tag) |
10914 | { | |
34eaf542 TT |
10915 | if (child_die->tag == DW_TAG_template_type_param |
10916 | || child_die->tag == DW_TAG_template_value_param) | |
10917 | { | |
10918 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
10919 | ||
f1078f66 DJ |
10920 | if (arg != NULL) |
10921 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
10922 | } |
10923 | else | |
10924 | process_die (child_die, cu); | |
c906108c SS |
10925 | child_die = sibling_die (child_die); |
10926 | } | |
10927 | } | |
10928 | ||
d389af10 JK |
10929 | inherit_abstract_dies (die, cu); |
10930 | ||
4a811a97 UW |
10931 | /* If we have a DW_AT_specification, we might need to import using |
10932 | directives from the context of the specification DIE. See the | |
10933 | comment in determine_prefix. */ | |
10934 | if (cu->language == language_cplus | |
10935 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
10936 | { | |
10937 | struct dwarf2_cu *spec_cu = cu; | |
10938 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
10939 | ||
10940 | while (spec_die) | |
10941 | { | |
10942 | child_die = spec_die->child; | |
10943 | while (child_die && child_die->tag) | |
10944 | { | |
10945 | if (child_die->tag == DW_TAG_imported_module) | |
10946 | process_die (child_die, spec_cu); | |
10947 | child_die = sibling_die (child_die); | |
10948 | } | |
10949 | ||
10950 | /* In some cases, GCC generates specification DIEs that | |
10951 | themselves contain DW_AT_specification attributes. */ | |
10952 | spec_die = die_specification (spec_die, &spec_cu); | |
10953 | } | |
10954 | } | |
10955 | ||
c906108c SS |
10956 | new = pop_context (); |
10957 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
10958 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
10959 | lowpc, highpc, objfile); | |
10960 | ||
df8a16a1 | 10961 | /* For C++, set the block's scope. */ |
195a3f6c | 10962 | if ((cu->language == language_cplus || cu->language == language_fortran) |
4d4ec4e5 | 10963 | && cu->processing_has_namespace_info) |
195a3f6c TT |
10964 | block_set_scope (block, determine_prefix (die, cu), |
10965 | &objfile->objfile_obstack); | |
df8a16a1 | 10966 | |
801e3a5b JB |
10967 | /* If we have address ranges, record them. */ |
10968 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 10969 | |
34eaf542 TT |
10970 | /* Attach template arguments to function. */ |
10971 | if (! VEC_empty (symbolp, template_args)) | |
10972 | { | |
10973 | gdb_assert (templ_func != NULL); | |
10974 | ||
10975 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
10976 | templ_func->template_arguments | |
10977 | = obstack_alloc (&objfile->objfile_obstack, | |
10978 | (templ_func->n_template_arguments | |
10979 | * sizeof (struct symbol *))); | |
10980 | memcpy (templ_func->template_arguments, | |
10981 | VEC_address (symbolp, template_args), | |
10982 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
10983 | VEC_free (symbolp, template_args); | |
10984 | } | |
10985 | ||
208d8187 JB |
10986 | /* In C++, we can have functions nested inside functions (e.g., when |
10987 | a function declares a class that has methods). This means that | |
10988 | when we finish processing a function scope, we may need to go | |
10989 | back to building a containing block's symbol lists. */ | |
10990 | local_symbols = new->locals; | |
27aa8d6a | 10991 | using_directives = new->using_directives; |
208d8187 | 10992 | |
921e78cf JB |
10993 | /* If we've finished processing a top-level function, subsequent |
10994 | symbols go in the file symbol list. */ | |
10995 | if (outermost_context_p ()) | |
e142c38c | 10996 | cu->list_in_scope = &file_symbols; |
c906108c SS |
10997 | } |
10998 | ||
10999 | /* Process all the DIES contained within a lexical block scope. Start | |
11000 | a new scope, process the dies, and then close the scope. */ | |
11001 | ||
11002 | static void | |
e7c27a73 | 11003 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11004 | { |
e7c27a73 | 11005 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 11006 | struct context_stack *new; |
c906108c SS |
11007 | CORE_ADDR lowpc, highpc; |
11008 | struct die_info *child_die; | |
e142c38c DJ |
11009 | CORE_ADDR baseaddr; |
11010 | ||
11011 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
11012 | |
11013 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
11014 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
11015 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 11016 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 11017 | describe ranges. */ |
d85a05f0 | 11018 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
11019 | return; |
11020 | lowpc += baseaddr; | |
11021 | highpc += baseaddr; | |
11022 | ||
11023 | push_context (0, lowpc); | |
639d11d3 | 11024 | if (die->child != NULL) |
c906108c | 11025 | { |
639d11d3 | 11026 | child_die = die->child; |
c906108c SS |
11027 | while (child_die && child_die->tag) |
11028 | { | |
e7c27a73 | 11029 | process_die (child_die, cu); |
c906108c SS |
11030 | child_die = sibling_die (child_die); |
11031 | } | |
11032 | } | |
11033 | new = pop_context (); | |
11034 | ||
8540c487 | 11035 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 11036 | { |
801e3a5b JB |
11037 | struct block *block |
11038 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
11039 | highpc, objfile); | |
11040 | ||
11041 | /* Note that recording ranges after traversing children, as we | |
11042 | do here, means that recording a parent's ranges entails | |
11043 | walking across all its children's ranges as they appear in | |
11044 | the address map, which is quadratic behavior. | |
11045 | ||
11046 | It would be nicer to record the parent's ranges before | |
11047 | traversing its children, simply overriding whatever you find | |
11048 | there. But since we don't even decide whether to create a | |
11049 | block until after we've traversed its children, that's hard | |
11050 | to do. */ | |
11051 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
11052 | } |
11053 | local_symbols = new->locals; | |
27aa8d6a | 11054 | using_directives = new->using_directives; |
c906108c SS |
11055 | } |
11056 | ||
96408a79 SA |
11057 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
11058 | ||
11059 | static void | |
11060 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11061 | { | |
11062 | struct objfile *objfile = cu->objfile; | |
11063 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11064 | CORE_ADDR pc, baseaddr; | |
11065 | struct attribute *attr; | |
11066 | struct call_site *call_site, call_site_local; | |
11067 | void **slot; | |
11068 | int nparams; | |
11069 | struct die_info *child_die; | |
11070 | ||
11071 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
11072 | ||
11073 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
11074 | if (!attr) | |
11075 | { | |
11076 | complaint (&symfile_complaints, | |
11077 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
11078 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11079 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11080 | return; |
11081 | } | |
11082 | pc = DW_ADDR (attr) + baseaddr; | |
11083 | ||
11084 | if (cu->call_site_htab == NULL) | |
11085 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
11086 | NULL, &objfile->objfile_obstack, | |
11087 | hashtab_obstack_allocate, NULL); | |
11088 | call_site_local.pc = pc; | |
11089 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
11090 | if (*slot != NULL) | |
11091 | { | |
11092 | complaint (&symfile_complaints, | |
11093 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
11094 | "DIE 0x%x [in module %s]"), | |
4262abfb JK |
11095 | paddress (gdbarch, pc), die->offset.sect_off, |
11096 | objfile_name (objfile)); | |
96408a79 SA |
11097 | return; |
11098 | } | |
11099 | ||
11100 | /* Count parameters at the caller. */ | |
11101 | ||
11102 | nparams = 0; | |
11103 | for (child_die = die->child; child_die && child_die->tag; | |
11104 | child_die = sibling_die (child_die)) | |
11105 | { | |
11106 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11107 | { | |
11108 | complaint (&symfile_complaints, | |
11109 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
11110 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb JK |
11111 | child_die->tag, child_die->offset.sect_off, |
11112 | objfile_name (objfile)); | |
96408a79 SA |
11113 | continue; |
11114 | } | |
11115 | ||
11116 | nparams++; | |
11117 | } | |
11118 | ||
11119 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
11120 | (sizeof (*call_site) | |
11121 | + (sizeof (*call_site->parameter) | |
11122 | * (nparams - 1)))); | |
11123 | *slot = call_site; | |
11124 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
11125 | call_site->pc = pc; | |
11126 | ||
11127 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
11128 | { | |
11129 | struct die_info *func_die; | |
11130 | ||
11131 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
11132 | for (func_die = die->parent; | |
11133 | func_die && func_die->tag != DW_TAG_subprogram | |
11134 | && func_die->tag != DW_TAG_subroutine_type; | |
11135 | func_die = func_die->parent); | |
11136 | ||
11137 | /* DW_AT_GNU_all_call_sites is a superset | |
11138 | of DW_AT_GNU_all_tail_call_sites. */ | |
11139 | if (func_die | |
11140 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
11141 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
11142 | { | |
11143 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
11144 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
11145 | both the initial caller containing the real return address PC and | |
11146 | the final callee containing the current PC of a chain of tail | |
11147 | calls do not need to have the tail call list complete. But any | |
11148 | function candidate for a virtual tail call frame searched via | |
11149 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
11150 | determined unambiguously. */ | |
11151 | } | |
11152 | else | |
11153 | { | |
11154 | struct type *func_type = NULL; | |
11155 | ||
11156 | if (func_die) | |
11157 | func_type = get_die_type (func_die, cu); | |
11158 | if (func_type != NULL) | |
11159 | { | |
11160 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
11161 | ||
11162 | /* Enlist this call site to the function. */ | |
11163 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
11164 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
11165 | } | |
11166 | else | |
11167 | complaint (&symfile_complaints, | |
11168 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
11169 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11170 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11171 | } |
11172 | } | |
11173 | ||
11174 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
11175 | if (attr == NULL) | |
11176 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11177 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
11178 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
11179 | /* Keep NULL DWARF_BLOCK. */; | |
11180 | else if (attr_form_is_block (attr)) | |
11181 | { | |
11182 | struct dwarf2_locexpr_baton *dlbaton; | |
11183 | ||
11184 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
11185 | dlbaton->data = DW_BLOCK (attr)->data; | |
11186 | dlbaton->size = DW_BLOCK (attr)->size; | |
11187 | dlbaton->per_cu = cu->per_cu; | |
11188 | ||
11189 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
11190 | } | |
7771576e | 11191 | else if (attr_form_is_ref (attr)) |
96408a79 | 11192 | { |
96408a79 SA |
11193 | struct dwarf2_cu *target_cu = cu; |
11194 | struct die_info *target_die; | |
11195 | ||
ac9ec31b | 11196 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
11197 | gdb_assert (target_cu->objfile == objfile); |
11198 | if (die_is_declaration (target_die, target_cu)) | |
11199 | { | |
9112db09 JK |
11200 | const char *target_physname = NULL; |
11201 | struct attribute *target_attr; | |
11202 | ||
11203 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
11204 | target_attr = dwarf2_attr (target_die, DW_AT_linkage_name, target_cu); | |
11205 | if (target_attr == NULL) | |
11206 | target_attr = dwarf2_attr (target_die, DW_AT_MIPS_linkage_name, | |
11207 | target_cu); | |
11208 | if (target_attr != NULL && DW_STRING (target_attr) != NULL) | |
11209 | target_physname = DW_STRING (target_attr); | |
11210 | else | |
11211 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
96408a79 SA |
11212 | if (target_physname == NULL) |
11213 | complaint (&symfile_complaints, | |
11214 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11215 | "physname, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11216 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11217 | else |
7d455152 | 11218 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
11219 | } |
11220 | else | |
11221 | { | |
11222 | CORE_ADDR lowpc; | |
11223 | ||
11224 | /* DW_AT_entry_pc should be preferred. */ | |
11225 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
11226 | complaint (&symfile_complaints, | |
11227 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11228 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11229 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11230 | else |
11231 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
11232 | } | |
11233 | } | |
11234 | else | |
11235 | complaint (&symfile_complaints, | |
11236 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
11237 | "block nor reference, for DIE 0x%x [in module %s]"), | |
4262abfb | 11238 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11239 | |
11240 | call_site->per_cu = cu->per_cu; | |
11241 | ||
11242 | for (child_die = die->child; | |
11243 | child_die && child_die->tag; | |
11244 | child_die = sibling_die (child_die)) | |
11245 | { | |
96408a79 | 11246 | struct call_site_parameter *parameter; |
1788b2d3 | 11247 | struct attribute *loc, *origin; |
96408a79 SA |
11248 | |
11249 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11250 | { | |
11251 | /* Already printed the complaint above. */ | |
11252 | continue; | |
11253 | } | |
11254 | ||
11255 | gdb_assert (call_site->parameter_count < nparams); | |
11256 | parameter = &call_site->parameter[call_site->parameter_count]; | |
11257 | ||
1788b2d3 JK |
11258 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
11259 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
11260 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 11261 | |
24c5c679 | 11262 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 | 11263 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
7771576e | 11264 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 JK |
11265 | { |
11266 | sect_offset offset; | |
11267 | ||
11268 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
11269 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
11270 | if (!offset_in_cu_p (&cu->header, offset)) |
11271 | { | |
11272 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
11273 | binding can be done only inside one CU. Such referenced DIE | |
11274 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
11275 | complaint (&symfile_complaints, | |
11276 | _("DW_AT_abstract_origin offset is not in CU for " | |
11277 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11278 | "[in module %s]"), | |
4262abfb | 11279 | child_die->offset.sect_off, objfile_name (objfile)); |
d76b7dbc JK |
11280 | continue; |
11281 | } | |
1788b2d3 JK |
11282 | parameter->u.param_offset.cu_off = (offset.sect_off |
11283 | - cu->header.offset.sect_off); | |
11284 | } | |
11285 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
11286 | { |
11287 | complaint (&symfile_complaints, | |
11288 | _("No DW_FORM_block* DW_AT_location for " | |
11289 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11290 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11291 | continue; |
11292 | } | |
24c5c679 | 11293 | else |
96408a79 | 11294 | { |
24c5c679 JK |
11295 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
11296 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
11297 | if (parameter->u.dwarf_reg != -1) | |
11298 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
11299 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
11300 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
11301 | ¶meter->u.fb_offset)) | |
11302 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
11303 | else | |
11304 | { | |
11305 | complaint (&symfile_complaints, | |
11306 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
11307 | "for DW_FORM_block* DW_AT_location is supported for " | |
11308 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11309 | "[in module %s]"), | |
4262abfb | 11310 | child_die->offset.sect_off, objfile_name (objfile)); |
24c5c679 JK |
11311 | continue; |
11312 | } | |
96408a79 SA |
11313 | } |
11314 | ||
11315 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
11316 | if (!attr_form_is_block (attr)) | |
11317 | { | |
11318 | complaint (&symfile_complaints, | |
11319 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
11320 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11321 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11322 | continue; |
11323 | } | |
11324 | parameter->value = DW_BLOCK (attr)->data; | |
11325 | parameter->value_size = DW_BLOCK (attr)->size; | |
11326 | ||
11327 | /* Parameters are not pre-cleared by memset above. */ | |
11328 | parameter->data_value = NULL; | |
11329 | parameter->data_value_size = 0; | |
11330 | call_site->parameter_count++; | |
11331 | ||
11332 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
11333 | if (attr) | |
11334 | { | |
11335 | if (!attr_form_is_block (attr)) | |
11336 | complaint (&symfile_complaints, | |
11337 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
11338 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11339 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11340 | else |
11341 | { | |
11342 | parameter->data_value = DW_BLOCK (attr)->data; | |
11343 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
11344 | } | |
11345 | } | |
11346 | } | |
11347 | } | |
11348 | ||
43039443 | 11349 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
11350 | Return 1 if the attributes are present and valid, otherwise, return 0. |
11351 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
11352 | |
11353 | static int | |
11354 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
11355 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
11356 | struct partial_symtab *ranges_pst) | |
43039443 JK |
11357 | { |
11358 | struct objfile *objfile = cu->objfile; | |
11359 | struct comp_unit_head *cu_header = &cu->header; | |
11360 | bfd *obfd = objfile->obfd; | |
11361 | unsigned int addr_size = cu_header->addr_size; | |
11362 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11363 | /* Base address selection entry. */ | |
11364 | CORE_ADDR base; | |
11365 | int found_base; | |
11366 | unsigned int dummy; | |
d521ce57 | 11367 | const gdb_byte *buffer; |
43039443 JK |
11368 | CORE_ADDR marker; |
11369 | int low_set; | |
11370 | CORE_ADDR low = 0; | |
11371 | CORE_ADDR high = 0; | |
ff013f42 | 11372 | CORE_ADDR baseaddr; |
43039443 | 11373 | |
d00adf39 DE |
11374 | found_base = cu->base_known; |
11375 | base = cu->base_address; | |
43039443 | 11376 | |
be391dca | 11377 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11378 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
11379 | { |
11380 | complaint (&symfile_complaints, | |
11381 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
11382 | offset); | |
11383 | return 0; | |
11384 | } | |
dce234bc | 11385 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
11386 | |
11387 | /* Read in the largest possible address. */ | |
11388 | marker = read_address (obfd, buffer, cu, &dummy); | |
11389 | if ((marker & mask) == mask) | |
11390 | { | |
11391 | /* If we found the largest possible address, then | |
11392 | read the base address. */ | |
11393 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11394 | buffer += 2 * addr_size; | |
11395 | offset += 2 * addr_size; | |
11396 | found_base = 1; | |
11397 | } | |
11398 | ||
11399 | low_set = 0; | |
11400 | ||
e7030f15 | 11401 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 11402 | |
43039443 JK |
11403 | while (1) |
11404 | { | |
11405 | CORE_ADDR range_beginning, range_end; | |
11406 | ||
11407 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
11408 | buffer += addr_size; | |
11409 | range_end = read_address (obfd, buffer, cu, &dummy); | |
11410 | buffer += addr_size; | |
11411 | offset += 2 * addr_size; | |
11412 | ||
11413 | /* An end of list marker is a pair of zero addresses. */ | |
11414 | if (range_beginning == 0 && range_end == 0) | |
11415 | /* Found the end of list entry. */ | |
11416 | break; | |
11417 | ||
11418 | /* Each base address selection entry is a pair of 2 values. | |
11419 | The first is the largest possible address, the second is | |
11420 | the base address. Check for a base address here. */ | |
11421 | if ((range_beginning & mask) == mask) | |
11422 | { | |
11423 | /* If we found the largest possible address, then | |
11424 | read the base address. */ | |
11425 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11426 | found_base = 1; | |
11427 | continue; | |
11428 | } | |
11429 | ||
11430 | if (!found_base) | |
11431 | { | |
11432 | /* We have no valid base address for the ranges | |
11433 | data. */ | |
11434 | complaint (&symfile_complaints, | |
11435 | _("Invalid .debug_ranges data (no base address)")); | |
11436 | return 0; | |
11437 | } | |
11438 | ||
9277c30c UW |
11439 | if (range_beginning > range_end) |
11440 | { | |
11441 | /* Inverted range entries are invalid. */ | |
11442 | complaint (&symfile_complaints, | |
11443 | _("Invalid .debug_ranges data (inverted range)")); | |
11444 | return 0; | |
11445 | } | |
11446 | ||
11447 | /* Empty range entries have no effect. */ | |
11448 | if (range_beginning == range_end) | |
11449 | continue; | |
11450 | ||
43039443 JK |
11451 | range_beginning += base; |
11452 | range_end += base; | |
11453 | ||
01093045 DE |
11454 | /* A not-uncommon case of bad debug info. |
11455 | Don't pollute the addrmap with bad data. */ | |
11456 | if (range_beginning + baseaddr == 0 | |
11457 | && !dwarf2_per_objfile->has_section_at_zero) | |
11458 | { | |
11459 | complaint (&symfile_complaints, | |
11460 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11461 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11462 | continue; |
11463 | } | |
11464 | ||
9277c30c | 11465 | if (ranges_pst != NULL) |
ff013f42 | 11466 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
11467 | range_beginning + baseaddr, |
11468 | range_end - 1 + baseaddr, | |
ff013f42 JK |
11469 | ranges_pst); |
11470 | ||
43039443 JK |
11471 | /* FIXME: This is recording everything as a low-high |
11472 | segment of consecutive addresses. We should have a | |
11473 | data structure for discontiguous block ranges | |
11474 | instead. */ | |
11475 | if (! low_set) | |
11476 | { | |
11477 | low = range_beginning; | |
11478 | high = range_end; | |
11479 | low_set = 1; | |
11480 | } | |
11481 | else | |
11482 | { | |
11483 | if (range_beginning < low) | |
11484 | low = range_beginning; | |
11485 | if (range_end > high) | |
11486 | high = range_end; | |
11487 | } | |
11488 | } | |
11489 | ||
11490 | if (! low_set) | |
11491 | /* If the first entry is an end-of-list marker, the range | |
11492 | describes an empty scope, i.e. no instructions. */ | |
11493 | return 0; | |
11494 | ||
11495 | if (low_return) | |
11496 | *low_return = low; | |
11497 | if (high_return) | |
11498 | *high_return = high; | |
11499 | return 1; | |
11500 | } | |
11501 | ||
af34e669 DJ |
11502 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
11503 | are present and valid, otherwise, return 0. Return -1 if the range is | |
11504 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 11505 | |
c906108c | 11506 | static int |
af34e669 | 11507 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
11508 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
11509 | struct partial_symtab *pst) | |
c906108c SS |
11510 | { |
11511 | struct attribute *attr; | |
91da1414 | 11512 | struct attribute *attr_high; |
af34e669 DJ |
11513 | CORE_ADDR low = 0; |
11514 | CORE_ADDR high = 0; | |
11515 | int ret = 0; | |
c906108c | 11516 | |
91da1414 MW |
11517 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
11518 | if (attr_high) | |
af34e669 | 11519 | { |
e142c38c | 11520 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 11521 | if (attr) |
91da1414 MW |
11522 | { |
11523 | low = DW_ADDR (attr); | |
3019eac3 DE |
11524 | if (attr_high->form == DW_FORM_addr |
11525 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
11526 | high = DW_ADDR (attr_high); |
11527 | else | |
11528 | high = low + DW_UNSND (attr_high); | |
11529 | } | |
af34e669 DJ |
11530 | else |
11531 | /* Found high w/o low attribute. */ | |
11532 | return 0; | |
11533 | ||
11534 | /* Found consecutive range of addresses. */ | |
11535 | ret = 1; | |
11536 | } | |
c906108c | 11537 | else |
af34e669 | 11538 | { |
e142c38c | 11539 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
11540 | if (attr != NULL) |
11541 | { | |
ab435259 DE |
11542 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
11543 | We take advantage of the fact that DW_AT_ranges does not appear | |
11544 | in DW_TAG_compile_unit of DWO files. */ | |
11545 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
11546 | unsigned int ranges_offset = (DW_UNSND (attr) | |
11547 | + (need_ranges_base | |
11548 | ? cu->ranges_base | |
11549 | : 0)); | |
2e3cf129 | 11550 | |
af34e669 | 11551 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 11552 | .debug_ranges section. */ |
2e3cf129 | 11553 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 11554 | return 0; |
43039443 | 11555 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
11556 | ret = -1; |
11557 | } | |
11558 | } | |
c906108c | 11559 | |
9373cf26 JK |
11560 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
11561 | if (high <= low) | |
c906108c SS |
11562 | return 0; |
11563 | ||
11564 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
11565 | eliminate duplicate copies of functions and vtables and such. | |
11566 | The linker will arbitrarily choose one and discard the others. | |
11567 | The AT_*_pc values for such functions refer to local labels in | |
11568 | these sections. If the section from that file was discarded, the | |
11569 | labels are not in the output, so the relocs get a value of 0. | |
11570 | If this is a discarded function, mark the pc bounds as invalid, | |
11571 | so that GDB will ignore it. */ | |
72dca2f5 | 11572 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
11573 | return 0; |
11574 | ||
11575 | *lowpc = low; | |
96408a79 SA |
11576 | if (highpc) |
11577 | *highpc = high; | |
af34e669 | 11578 | return ret; |
c906108c SS |
11579 | } |
11580 | ||
b084d499 JB |
11581 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
11582 | its low and high PC addresses. Do nothing if these addresses could not | |
11583 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
11584 | and HIGHPC to the high address if greater than HIGHPC. */ | |
11585 | ||
11586 | static void | |
11587 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
11588 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
11589 | struct dwarf2_cu *cu) | |
11590 | { | |
11591 | CORE_ADDR low, high; | |
11592 | struct die_info *child = die->child; | |
11593 | ||
d85a05f0 | 11594 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
11595 | { |
11596 | *lowpc = min (*lowpc, low); | |
11597 | *highpc = max (*highpc, high); | |
11598 | } | |
11599 | ||
11600 | /* If the language does not allow nested subprograms (either inside | |
11601 | subprograms or lexical blocks), we're done. */ | |
11602 | if (cu->language != language_ada) | |
11603 | return; | |
6e70227d | 11604 | |
b084d499 JB |
11605 | /* Check all the children of the given DIE. If it contains nested |
11606 | subprograms, then check their pc bounds. Likewise, we need to | |
11607 | check lexical blocks as well, as they may also contain subprogram | |
11608 | definitions. */ | |
11609 | while (child && child->tag) | |
11610 | { | |
11611 | if (child->tag == DW_TAG_subprogram | |
11612 | || child->tag == DW_TAG_lexical_block) | |
11613 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
11614 | child = sibling_die (child); | |
11615 | } | |
11616 | } | |
11617 | ||
fae299cd DC |
11618 | /* Get the low and high pc's represented by the scope DIE, and store |
11619 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
11620 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
11621 | ||
11622 | static void | |
11623 | get_scope_pc_bounds (struct die_info *die, | |
11624 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
11625 | struct dwarf2_cu *cu) | |
11626 | { | |
11627 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
11628 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
11629 | CORE_ADDR current_low, current_high; | |
11630 | ||
d85a05f0 | 11631 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
11632 | { |
11633 | best_low = current_low; | |
11634 | best_high = current_high; | |
11635 | } | |
11636 | else | |
11637 | { | |
11638 | struct die_info *child = die->child; | |
11639 | ||
11640 | while (child && child->tag) | |
11641 | { | |
11642 | switch (child->tag) { | |
11643 | case DW_TAG_subprogram: | |
b084d499 | 11644 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
11645 | break; |
11646 | case DW_TAG_namespace: | |
f55ee35c | 11647 | case DW_TAG_module: |
fae299cd DC |
11648 | /* FIXME: carlton/2004-01-16: Should we do this for |
11649 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
11650 | that current GCC's always emit the DIEs corresponding | |
11651 | to definitions of methods of classes as children of a | |
11652 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
11653 | the DIEs giving the declarations, which could be | |
11654 | anywhere). But I don't see any reason why the | |
11655 | standards says that they have to be there. */ | |
11656 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
11657 | ||
11658 | if (current_low != ((CORE_ADDR) -1)) | |
11659 | { | |
11660 | best_low = min (best_low, current_low); | |
11661 | best_high = max (best_high, current_high); | |
11662 | } | |
11663 | break; | |
11664 | default: | |
0963b4bd | 11665 | /* Ignore. */ |
fae299cd DC |
11666 | break; |
11667 | } | |
11668 | ||
11669 | child = sibling_die (child); | |
11670 | } | |
11671 | } | |
11672 | ||
11673 | *lowpc = best_low; | |
11674 | *highpc = best_high; | |
11675 | } | |
11676 | ||
801e3a5b JB |
11677 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
11678 | in DIE. */ | |
380bca97 | 11679 | |
801e3a5b JB |
11680 | static void |
11681 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
11682 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
11683 | { | |
bb5ed363 | 11684 | struct objfile *objfile = cu->objfile; |
801e3a5b | 11685 | struct attribute *attr; |
91da1414 | 11686 | struct attribute *attr_high; |
801e3a5b | 11687 | |
91da1414 MW |
11688 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
11689 | if (attr_high) | |
801e3a5b | 11690 | { |
801e3a5b JB |
11691 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
11692 | if (attr) | |
11693 | { | |
11694 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 11695 | CORE_ADDR high; |
3019eac3 DE |
11696 | if (attr_high->form == DW_FORM_addr |
11697 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
11698 | high = DW_ADDR (attr_high); |
11699 | else | |
11700 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 11701 | |
801e3a5b JB |
11702 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
11703 | } | |
11704 | } | |
11705 | ||
11706 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
11707 | if (attr) | |
11708 | { | |
bb5ed363 | 11709 | bfd *obfd = objfile->obfd; |
ab435259 DE |
11710 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
11711 | We take advantage of the fact that DW_AT_ranges does not appear | |
11712 | in DW_TAG_compile_unit of DWO files. */ | |
11713 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
11714 | |
11715 | /* The value of the DW_AT_ranges attribute is the offset of the | |
11716 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
11717 | unsigned long offset = (DW_UNSND (attr) |
11718 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 11719 | const gdb_byte *buffer; |
801e3a5b JB |
11720 | |
11721 | /* For some target architectures, but not others, the | |
11722 | read_address function sign-extends the addresses it returns. | |
11723 | To recognize base address selection entries, we need a | |
11724 | mask. */ | |
11725 | unsigned int addr_size = cu->header.addr_size; | |
11726 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11727 | ||
11728 | /* The base address, to which the next pair is relative. Note | |
11729 | that this 'base' is a DWARF concept: most entries in a range | |
11730 | list are relative, to reduce the number of relocs against the | |
11731 | debugging information. This is separate from this function's | |
11732 | 'baseaddr' argument, which GDB uses to relocate debugging | |
11733 | information from a shared library based on the address at | |
11734 | which the library was loaded. */ | |
d00adf39 DE |
11735 | CORE_ADDR base = cu->base_address; |
11736 | int base_known = cu->base_known; | |
801e3a5b | 11737 | |
d62bfeaf | 11738 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11739 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
11740 | { |
11741 | complaint (&symfile_complaints, | |
11742 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
11743 | offset); | |
11744 | return; | |
11745 | } | |
d62bfeaf | 11746 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
11747 | |
11748 | for (;;) | |
11749 | { | |
11750 | unsigned int bytes_read; | |
11751 | CORE_ADDR start, end; | |
11752 | ||
11753 | start = read_address (obfd, buffer, cu, &bytes_read); | |
11754 | buffer += bytes_read; | |
11755 | end = read_address (obfd, buffer, cu, &bytes_read); | |
11756 | buffer += bytes_read; | |
11757 | ||
11758 | /* Did we find the end of the range list? */ | |
11759 | if (start == 0 && end == 0) | |
11760 | break; | |
11761 | ||
11762 | /* Did we find a base address selection entry? */ | |
11763 | else if ((start & base_select_mask) == base_select_mask) | |
11764 | { | |
11765 | base = end; | |
11766 | base_known = 1; | |
11767 | } | |
11768 | ||
11769 | /* We found an ordinary address range. */ | |
11770 | else | |
11771 | { | |
11772 | if (!base_known) | |
11773 | { | |
11774 | complaint (&symfile_complaints, | |
3e43a32a MS |
11775 | _("Invalid .debug_ranges data " |
11776 | "(no base address)")); | |
801e3a5b JB |
11777 | return; |
11778 | } | |
11779 | ||
9277c30c UW |
11780 | if (start > end) |
11781 | { | |
11782 | /* Inverted range entries are invalid. */ | |
11783 | complaint (&symfile_complaints, | |
11784 | _("Invalid .debug_ranges data " | |
11785 | "(inverted range)")); | |
11786 | return; | |
11787 | } | |
11788 | ||
11789 | /* Empty range entries have no effect. */ | |
11790 | if (start == end) | |
11791 | continue; | |
11792 | ||
01093045 DE |
11793 | start += base + baseaddr; |
11794 | end += base + baseaddr; | |
11795 | ||
11796 | /* A not-uncommon case of bad debug info. | |
11797 | Don't pollute the addrmap with bad data. */ | |
11798 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
11799 | { | |
11800 | complaint (&symfile_complaints, | |
11801 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11802 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11803 | continue; |
11804 | } | |
11805 | ||
11806 | record_block_range (block, start, end - 1); | |
801e3a5b JB |
11807 | } |
11808 | } | |
11809 | } | |
11810 | } | |
11811 | ||
685b1105 JK |
11812 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
11813 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 11814 | |
685b1105 JK |
11815 | static void |
11816 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
11817 | { |
11818 | const char *cs; | |
11819 | int major, minor, release; | |
11820 | ||
11821 | if (cu->producer == NULL) | |
11822 | { | |
11823 | /* For unknown compilers expect their behavior is DWARF version | |
11824 | compliant. | |
11825 | ||
11826 | GCC started to support .debug_types sections by -gdwarf-4 since | |
11827 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
11828 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
11829 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
11830 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 11831 | } |
685b1105 | 11832 | else if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) == 0) |
60d5a603 | 11833 | { |
685b1105 JK |
11834 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
11835 | ||
ba919b58 TT |
11836 | cs = &cu->producer[strlen ("GNU ")]; |
11837 | while (*cs && !isdigit (*cs)) | |
11838 | cs++; | |
11839 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
11840 | { | |
11841 | /* Not recognized as GCC. */ | |
11842 | } | |
11843 | else | |
1b80a9fa JK |
11844 | { |
11845 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); | |
11846 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
11847 | } | |
685b1105 JK |
11848 | } |
11849 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
11850 | cu->producer_is_icc = 1; | |
11851 | else | |
11852 | { | |
11853 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
11854 | compliant. */ | |
60d5a603 JK |
11855 | } |
11856 | ||
ba919b58 | 11857 | cu->checked_producer = 1; |
685b1105 | 11858 | } |
ba919b58 | 11859 | |
685b1105 JK |
11860 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
11861 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
11862 | during 4.6.0 experimental. */ | |
11863 | ||
11864 | static int | |
11865 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
11866 | { | |
11867 | if (!cu->checked_producer) | |
11868 | check_producer (cu); | |
11869 | ||
11870 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
11871 | } |
11872 | ||
11873 | /* Return the default accessibility type if it is not overriden by | |
11874 | DW_AT_accessibility. */ | |
11875 | ||
11876 | static enum dwarf_access_attribute | |
11877 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
11878 | { | |
11879 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
11880 | { | |
11881 | /* The default DWARF 2 accessibility for members is public, the default | |
11882 | accessibility for inheritance is private. */ | |
11883 | ||
11884 | if (die->tag != DW_TAG_inheritance) | |
11885 | return DW_ACCESS_public; | |
11886 | else | |
11887 | return DW_ACCESS_private; | |
11888 | } | |
11889 | else | |
11890 | { | |
11891 | /* DWARF 3+ defines the default accessibility a different way. The same | |
11892 | rules apply now for DW_TAG_inheritance as for the members and it only | |
11893 | depends on the container kind. */ | |
11894 | ||
11895 | if (die->parent->tag == DW_TAG_class_type) | |
11896 | return DW_ACCESS_private; | |
11897 | else | |
11898 | return DW_ACCESS_public; | |
11899 | } | |
11900 | } | |
11901 | ||
74ac6d43 TT |
11902 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
11903 | offset. If the attribute was not found return 0, otherwise return | |
11904 | 1. If it was found but could not properly be handled, set *OFFSET | |
11905 | to 0. */ | |
11906 | ||
11907 | static int | |
11908 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
11909 | LONGEST *offset) | |
11910 | { | |
11911 | struct attribute *attr; | |
11912 | ||
11913 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
11914 | if (attr != NULL) | |
11915 | { | |
11916 | *offset = 0; | |
11917 | ||
11918 | /* Note that we do not check for a section offset first here. | |
11919 | This is because DW_AT_data_member_location is new in DWARF 4, | |
11920 | so if we see it, we can assume that a constant form is really | |
11921 | a constant and not a section offset. */ | |
11922 | if (attr_form_is_constant (attr)) | |
11923 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
11924 | else if (attr_form_is_section_offset (attr)) | |
11925 | dwarf2_complex_location_expr_complaint (); | |
11926 | else if (attr_form_is_block (attr)) | |
11927 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
11928 | else | |
11929 | dwarf2_complex_location_expr_complaint (); | |
11930 | ||
11931 | return 1; | |
11932 | } | |
11933 | ||
11934 | return 0; | |
11935 | } | |
11936 | ||
c906108c SS |
11937 | /* Add an aggregate field to the field list. */ |
11938 | ||
11939 | static void | |
107d2387 | 11940 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 11941 | struct dwarf2_cu *cu) |
6e70227d | 11942 | { |
e7c27a73 | 11943 | struct objfile *objfile = cu->objfile; |
5e2b427d | 11944 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
11945 | struct nextfield *new_field; |
11946 | struct attribute *attr; | |
11947 | struct field *fp; | |
15d034d0 | 11948 | const char *fieldname = ""; |
c906108c SS |
11949 | |
11950 | /* Allocate a new field list entry and link it in. */ | |
11951 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 11952 | make_cleanup (xfree, new_field); |
c906108c | 11953 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
11954 | |
11955 | if (die->tag == DW_TAG_inheritance) | |
11956 | { | |
11957 | new_field->next = fip->baseclasses; | |
11958 | fip->baseclasses = new_field; | |
11959 | } | |
11960 | else | |
11961 | { | |
11962 | new_field->next = fip->fields; | |
11963 | fip->fields = new_field; | |
11964 | } | |
c906108c SS |
11965 | fip->nfields++; |
11966 | ||
e142c38c | 11967 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
11968 | if (attr) |
11969 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
11970 | else |
11971 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
11972 | if (new_field->accessibility != DW_ACCESS_public) |
11973 | fip->non_public_fields = 1; | |
60d5a603 | 11974 | |
e142c38c | 11975 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
11976 | if (attr) |
11977 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
11978 | else |
11979 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
11980 | |
11981 | fp = &new_field->field; | |
a9a9bd0f | 11982 | |
e142c38c | 11983 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 11984 | { |
74ac6d43 TT |
11985 | LONGEST offset; |
11986 | ||
a9a9bd0f | 11987 | /* Data member other than a C++ static data member. */ |
6e70227d | 11988 | |
c906108c | 11989 | /* Get type of field. */ |
e7c27a73 | 11990 | fp->type = die_type (die, cu); |
c906108c | 11991 | |
d6a843b5 | 11992 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 11993 | |
c906108c | 11994 | /* Get bit size of field (zero if none). */ |
e142c38c | 11995 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
11996 | if (attr) |
11997 | { | |
11998 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
11999 | } | |
12000 | else | |
12001 | { | |
12002 | FIELD_BITSIZE (*fp) = 0; | |
12003 | } | |
12004 | ||
12005 | /* Get bit offset of field. */ | |
74ac6d43 TT |
12006 | if (handle_data_member_location (die, cu, &offset)) |
12007 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 12008 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
12009 | if (attr) |
12010 | { | |
5e2b427d | 12011 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
12012 | { |
12013 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
12014 | additional bit offset from the MSB of the containing |
12015 | anonymous object to the MSB of the field. We don't | |
12016 | have to do anything special since we don't need to | |
12017 | know the size of the anonymous object. */ | |
f41f5e61 | 12018 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
12019 | } |
12020 | else | |
12021 | { | |
12022 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
12023 | MSB of the anonymous object, subtract off the number of |
12024 | bits from the MSB of the field to the MSB of the | |
12025 | object, and then subtract off the number of bits of | |
12026 | the field itself. The result is the bit offset of | |
12027 | the LSB of the field. */ | |
c906108c SS |
12028 | int anonymous_size; |
12029 | int bit_offset = DW_UNSND (attr); | |
12030 | ||
e142c38c | 12031 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12032 | if (attr) |
12033 | { | |
12034 | /* The size of the anonymous object containing | |
12035 | the bit field is explicit, so use the | |
12036 | indicated size (in bytes). */ | |
12037 | anonymous_size = DW_UNSND (attr); | |
12038 | } | |
12039 | else | |
12040 | { | |
12041 | /* The size of the anonymous object containing | |
12042 | the bit field must be inferred from the type | |
12043 | attribute of the data member containing the | |
12044 | bit field. */ | |
12045 | anonymous_size = TYPE_LENGTH (fp->type); | |
12046 | } | |
f41f5e61 PA |
12047 | SET_FIELD_BITPOS (*fp, |
12048 | (FIELD_BITPOS (*fp) | |
12049 | + anonymous_size * bits_per_byte | |
12050 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
12051 | } |
12052 | } | |
12053 | ||
12054 | /* Get name of field. */ | |
39cbfefa DJ |
12055 | fieldname = dwarf2_name (die, cu); |
12056 | if (fieldname == NULL) | |
12057 | fieldname = ""; | |
d8151005 DJ |
12058 | |
12059 | /* The name is already allocated along with this objfile, so we don't | |
12060 | need to duplicate it for the type. */ | |
12061 | fp->name = fieldname; | |
c906108c SS |
12062 | |
12063 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 12064 | pointer or virtual base class pointer) to private. */ |
e142c38c | 12065 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 12066 | { |
d48cc9dd | 12067 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
12068 | new_field->accessibility = DW_ACCESS_private; |
12069 | fip->non_public_fields = 1; | |
12070 | } | |
12071 | } | |
a9a9bd0f | 12072 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 12073 | { |
a9a9bd0f DC |
12074 | /* C++ static member. */ |
12075 | ||
12076 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
12077 | is a declaration, but all versions of G++ as of this writing | |
12078 | (so through at least 3.2.1) incorrectly generate | |
12079 | DW_TAG_variable tags. */ | |
6e70227d | 12080 | |
ff355380 | 12081 | const char *physname; |
c906108c | 12082 | |
a9a9bd0f | 12083 | /* Get name of field. */ |
39cbfefa DJ |
12084 | fieldname = dwarf2_name (die, cu); |
12085 | if (fieldname == NULL) | |
c906108c SS |
12086 | return; |
12087 | ||
254e6b9e | 12088 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
12089 | if (attr |
12090 | /* Only create a symbol if this is an external value. | |
12091 | new_symbol checks this and puts the value in the global symbol | |
12092 | table, which we want. If it is not external, new_symbol | |
12093 | will try to put the value in cu->list_in_scope which is wrong. */ | |
12094 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
12095 | { |
12096 | /* A static const member, not much different than an enum as far as | |
12097 | we're concerned, except that we can support more types. */ | |
12098 | new_symbol (die, NULL, cu); | |
12099 | } | |
12100 | ||
2df3850c | 12101 | /* Get physical name. */ |
ff355380 | 12102 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 12103 | |
d8151005 DJ |
12104 | /* The name is already allocated along with this objfile, so we don't |
12105 | need to duplicate it for the type. */ | |
12106 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 12107 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 12108 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
12109 | } |
12110 | else if (die->tag == DW_TAG_inheritance) | |
12111 | { | |
74ac6d43 | 12112 | LONGEST offset; |
d4b96c9a | 12113 | |
74ac6d43 TT |
12114 | /* C++ base class field. */ |
12115 | if (handle_data_member_location (die, cu, &offset)) | |
12116 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 12117 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 12118 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
12119 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
12120 | fip->nbaseclasses++; | |
12121 | } | |
12122 | } | |
12123 | ||
98751a41 JK |
12124 | /* Add a typedef defined in the scope of the FIP's class. */ |
12125 | ||
12126 | static void | |
12127 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
12128 | struct dwarf2_cu *cu) | |
6e70227d | 12129 | { |
98751a41 | 12130 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
12131 | struct typedef_field_list *new_field; |
12132 | struct attribute *attr; | |
12133 | struct typedef_field *fp; | |
12134 | char *fieldname = ""; | |
12135 | ||
12136 | /* Allocate a new field list entry and link it in. */ | |
12137 | new_field = xzalloc (sizeof (*new_field)); | |
12138 | make_cleanup (xfree, new_field); | |
12139 | ||
12140 | gdb_assert (die->tag == DW_TAG_typedef); | |
12141 | ||
12142 | fp = &new_field->field; | |
12143 | ||
12144 | /* Get name of field. */ | |
12145 | fp->name = dwarf2_name (die, cu); | |
12146 | if (fp->name == NULL) | |
12147 | return; | |
12148 | ||
12149 | fp->type = read_type_die (die, cu); | |
12150 | ||
12151 | new_field->next = fip->typedef_field_list; | |
12152 | fip->typedef_field_list = new_field; | |
12153 | fip->typedef_field_list_count++; | |
12154 | } | |
12155 | ||
c906108c SS |
12156 | /* Create the vector of fields, and attach it to the type. */ |
12157 | ||
12158 | static void | |
fba45db2 | 12159 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12160 | struct dwarf2_cu *cu) |
c906108c SS |
12161 | { |
12162 | int nfields = fip->nfields; | |
12163 | ||
12164 | /* Record the field count, allocate space for the array of fields, | |
12165 | and create blank accessibility bitfields if necessary. */ | |
12166 | TYPE_NFIELDS (type) = nfields; | |
12167 | TYPE_FIELDS (type) = (struct field *) | |
12168 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
12169 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
12170 | ||
b4ba55a1 | 12171 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
12172 | { |
12173 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12174 | ||
12175 | TYPE_FIELD_PRIVATE_BITS (type) = | |
12176 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12177 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
12178 | ||
12179 | TYPE_FIELD_PROTECTED_BITS (type) = | |
12180 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12181 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
12182 | ||
774b6a14 TT |
12183 | TYPE_FIELD_IGNORE_BITS (type) = |
12184 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12185 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
12186 | } |
12187 | ||
12188 | /* If the type has baseclasses, allocate and clear a bit vector for | |
12189 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 12190 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
12191 | { |
12192 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 12193 | unsigned char *pointer; |
c906108c SS |
12194 | |
12195 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
12196 | pointer = TYPE_ALLOC (type, num_bytes); |
12197 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
12198 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
12199 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
12200 | } | |
12201 | ||
3e43a32a MS |
12202 | /* Copy the saved-up fields into the field vector. Start from the head of |
12203 | the list, adding to the tail of the field array, so that they end up in | |
12204 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
12205 | while (nfields-- > 0) |
12206 | { | |
7d0ccb61 DJ |
12207 | struct nextfield *fieldp; |
12208 | ||
12209 | if (fip->fields) | |
12210 | { | |
12211 | fieldp = fip->fields; | |
12212 | fip->fields = fieldp->next; | |
12213 | } | |
12214 | else | |
12215 | { | |
12216 | fieldp = fip->baseclasses; | |
12217 | fip->baseclasses = fieldp->next; | |
12218 | } | |
12219 | ||
12220 | TYPE_FIELD (type, nfields) = fieldp->field; | |
12221 | switch (fieldp->accessibility) | |
c906108c | 12222 | { |
c5aa993b | 12223 | case DW_ACCESS_private: |
b4ba55a1 JB |
12224 | if (cu->language != language_ada) |
12225 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 12226 | break; |
c906108c | 12227 | |
c5aa993b | 12228 | case DW_ACCESS_protected: |
b4ba55a1 JB |
12229 | if (cu->language != language_ada) |
12230 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 12231 | break; |
c906108c | 12232 | |
c5aa993b JM |
12233 | case DW_ACCESS_public: |
12234 | break; | |
c906108c | 12235 | |
c5aa993b JM |
12236 | default: |
12237 | /* Unknown accessibility. Complain and treat it as public. */ | |
12238 | { | |
e2e0b3e5 | 12239 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 12240 | fieldp->accessibility); |
c5aa993b JM |
12241 | } |
12242 | break; | |
c906108c SS |
12243 | } |
12244 | if (nfields < fip->nbaseclasses) | |
12245 | { | |
7d0ccb61 | 12246 | switch (fieldp->virtuality) |
c906108c | 12247 | { |
c5aa993b JM |
12248 | case DW_VIRTUALITY_virtual: |
12249 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 12250 | if (cu->language == language_ada) |
a73c6dcd | 12251 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
12252 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
12253 | break; | |
c906108c SS |
12254 | } |
12255 | } | |
c906108c SS |
12256 | } |
12257 | } | |
12258 | ||
7d27a96d TT |
12259 | /* Return true if this member function is a constructor, false |
12260 | otherwise. */ | |
12261 | ||
12262 | static int | |
12263 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
12264 | { | |
12265 | const char *fieldname; | |
12266 | const char *typename; | |
12267 | int len; | |
12268 | ||
12269 | if (die->parent == NULL) | |
12270 | return 0; | |
12271 | ||
12272 | if (die->parent->tag != DW_TAG_structure_type | |
12273 | && die->parent->tag != DW_TAG_union_type | |
12274 | && die->parent->tag != DW_TAG_class_type) | |
12275 | return 0; | |
12276 | ||
12277 | fieldname = dwarf2_name (die, cu); | |
12278 | typename = dwarf2_name (die->parent, cu); | |
12279 | if (fieldname == NULL || typename == NULL) | |
12280 | return 0; | |
12281 | ||
12282 | len = strlen (fieldname); | |
12283 | return (strncmp (fieldname, typename, len) == 0 | |
12284 | && (typename[len] == '\0' || typename[len] == '<')); | |
12285 | } | |
12286 | ||
c906108c SS |
12287 | /* Add a member function to the proper fieldlist. */ |
12288 | ||
12289 | static void | |
107d2387 | 12290 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12291 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 12292 | { |
e7c27a73 | 12293 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12294 | struct attribute *attr; |
12295 | struct fnfieldlist *flp; | |
12296 | int i; | |
12297 | struct fn_field *fnp; | |
15d034d0 | 12298 | const char *fieldname; |
c906108c | 12299 | struct nextfnfield *new_fnfield; |
f792889a | 12300 | struct type *this_type; |
60d5a603 | 12301 | enum dwarf_access_attribute accessibility; |
c906108c | 12302 | |
b4ba55a1 | 12303 | if (cu->language == language_ada) |
a73c6dcd | 12304 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 12305 | |
2df3850c | 12306 | /* Get name of member function. */ |
39cbfefa DJ |
12307 | fieldname = dwarf2_name (die, cu); |
12308 | if (fieldname == NULL) | |
2df3850c | 12309 | return; |
c906108c | 12310 | |
c906108c SS |
12311 | /* Look up member function name in fieldlist. */ |
12312 | for (i = 0; i < fip->nfnfields; i++) | |
12313 | { | |
27bfe10e | 12314 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
12315 | break; |
12316 | } | |
12317 | ||
12318 | /* Create new list element if necessary. */ | |
12319 | if (i < fip->nfnfields) | |
12320 | flp = &fip->fnfieldlists[i]; | |
12321 | else | |
12322 | { | |
12323 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
12324 | { | |
12325 | fip->fnfieldlists = (struct fnfieldlist *) | |
12326 | xrealloc (fip->fnfieldlists, | |
12327 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 12328 | * sizeof (struct fnfieldlist)); |
c906108c | 12329 | if (fip->nfnfields == 0) |
c13c43fd | 12330 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
12331 | } |
12332 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
12333 | flp->name = fieldname; | |
12334 | flp->length = 0; | |
12335 | flp->head = NULL; | |
3da10d80 | 12336 | i = fip->nfnfields++; |
c906108c SS |
12337 | } |
12338 | ||
12339 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 12340 | entry. */ |
c906108c | 12341 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 12342 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
12343 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
12344 | new_fnfield->next = flp->head; | |
12345 | flp->head = new_fnfield; | |
12346 | flp->length++; | |
12347 | ||
12348 | /* Fill in the member function field info. */ | |
12349 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
12350 | |
12351 | /* Delay processing of the physname until later. */ | |
12352 | if (cu->language == language_cplus || cu->language == language_java) | |
12353 | { | |
12354 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
12355 | die, cu); | |
12356 | } | |
12357 | else | |
12358 | { | |
1d06ead6 | 12359 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
12360 | fnp->physname = physname ? physname : ""; |
12361 | } | |
12362 | ||
c906108c | 12363 | fnp->type = alloc_type (objfile); |
f792889a DJ |
12364 | this_type = read_type_die (die, cu); |
12365 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 12366 | { |
f792889a | 12367 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 12368 | |
f792889a | 12369 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
12370 | of the method itself (TYPE_CODE_METHOD). */ |
12371 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
12372 | TYPE_TARGET_TYPE (this_type), |
12373 | TYPE_FIELDS (this_type), | |
12374 | TYPE_NFIELDS (this_type), | |
12375 | TYPE_VARARGS (this_type)); | |
c906108c SS |
12376 | |
12377 | /* Handle static member functions. | |
c5aa993b | 12378 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
12379 | member functions. G++ helps GDB by marking the first |
12380 | parameter for non-static member functions (which is the this | |
12381 | pointer) as artificial. We obtain this information from | |
12382 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 12383 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
12384 | fnp->voffset = VOFFSET_STATIC; |
12385 | } | |
12386 | else | |
e2e0b3e5 | 12387 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 12388 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
12389 | |
12390 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 12391 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 12392 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 12393 | |
3e43a32a MS |
12394 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
12395 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
12396 | |
12397 | /* Get accessibility. */ | |
e142c38c | 12398 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 12399 | if (attr) |
60d5a603 JK |
12400 | accessibility = DW_UNSND (attr); |
12401 | else | |
12402 | accessibility = dwarf2_default_access_attribute (die, cu); | |
12403 | switch (accessibility) | |
c906108c | 12404 | { |
60d5a603 JK |
12405 | case DW_ACCESS_private: |
12406 | fnp->is_private = 1; | |
12407 | break; | |
12408 | case DW_ACCESS_protected: | |
12409 | fnp->is_protected = 1; | |
12410 | break; | |
c906108c SS |
12411 | } |
12412 | ||
b02dede2 | 12413 | /* Check for artificial methods. */ |
e142c38c | 12414 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
12415 | if (attr && DW_UNSND (attr) != 0) |
12416 | fnp->is_artificial = 1; | |
12417 | ||
7d27a96d TT |
12418 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
12419 | ||
0d564a31 | 12420 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
12421 | function. For older versions of GCC, this is an offset in the |
12422 | appropriate virtual table, as specified by DW_AT_containing_type. | |
12423 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
12424 | to the object address. */ |
12425 | ||
e142c38c | 12426 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 12427 | if (attr) |
8e19ed76 | 12428 | { |
aec5aa8b | 12429 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 12430 | { |
aec5aa8b TT |
12431 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
12432 | { | |
12433 | /* Old-style GCC. */ | |
12434 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
12435 | } | |
12436 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12437 | || (DW_BLOCK (attr)->size > 1 | |
12438 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
12439 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
12440 | { | |
12441 | struct dwarf_block blk; | |
12442 | int offset; | |
12443 | ||
12444 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12445 | ? 1 : 2); | |
12446 | blk.size = DW_BLOCK (attr)->size - offset; | |
12447 | blk.data = DW_BLOCK (attr)->data + offset; | |
12448 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
12449 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
12450 | dwarf2_complex_location_expr_complaint (); | |
12451 | else | |
12452 | fnp->voffset /= cu->header.addr_size; | |
12453 | fnp->voffset += 2; | |
12454 | } | |
12455 | else | |
12456 | dwarf2_complex_location_expr_complaint (); | |
12457 | ||
12458 | if (!fnp->fcontext) | |
12459 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
12460 | } | |
3690dd37 | 12461 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 12462 | { |
4d3c2250 | 12463 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
12464 | } |
12465 | else | |
12466 | { | |
4d3c2250 KB |
12467 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
12468 | fieldname); | |
8e19ed76 | 12469 | } |
0d564a31 | 12470 | } |
d48cc9dd DJ |
12471 | else |
12472 | { | |
12473 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
12474 | if (attr && DW_UNSND (attr)) | |
12475 | { | |
12476 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
12477 | complaint (&symfile_complaints, | |
3e43a32a MS |
12478 | _("Member function \"%s\" (offset %d) is virtual " |
12479 | "but the vtable offset is not specified"), | |
b64f50a1 | 12480 | fieldname, die->offset.sect_off); |
9655fd1a | 12481 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
12482 | TYPE_CPLUS_DYNAMIC (type) = 1; |
12483 | } | |
12484 | } | |
c906108c SS |
12485 | } |
12486 | ||
12487 | /* Create the vector of member function fields, and attach it to the type. */ | |
12488 | ||
12489 | static void | |
fba45db2 | 12490 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12491 | struct dwarf2_cu *cu) |
c906108c SS |
12492 | { |
12493 | struct fnfieldlist *flp; | |
c906108c SS |
12494 | int i; |
12495 | ||
b4ba55a1 | 12496 | if (cu->language == language_ada) |
a73c6dcd | 12497 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 12498 | |
c906108c SS |
12499 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
12500 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
12501 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
12502 | ||
12503 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
12504 | { | |
12505 | struct nextfnfield *nfp = flp->head; | |
12506 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
12507 | int k; | |
12508 | ||
12509 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
12510 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
12511 | fn_flp->fn_fields = (struct fn_field *) | |
12512 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
12513 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 12514 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
12515 | } |
12516 | ||
12517 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
12518 | } |
12519 | ||
1168df01 JB |
12520 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
12521 | language, zero otherwise. */ | |
12522 | static int | |
12523 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
12524 | { | |
12525 | static const char vptr[] = "_vptr"; | |
987504bb | 12526 | static const char vtable[] = "vtable"; |
1168df01 | 12527 | |
987504bb JJ |
12528 | /* Look for the C++ and Java forms of the vtable. */ |
12529 | if ((cu->language == language_java | |
12530 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
12531 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
12532 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
12533 | return 1; |
12534 | ||
12535 | return 0; | |
12536 | } | |
12537 | ||
c0dd20ea | 12538 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
12539 | functions, with the ABI-specified layout. If TYPE describes |
12540 | such a structure, smash it into a member function type. | |
61049d3b DJ |
12541 | |
12542 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
12543 | This is GCC PR debug/28767. */ | |
c0dd20ea | 12544 | |
0b92b5bb TT |
12545 | static void |
12546 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 12547 | { |
0b92b5bb | 12548 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
12549 | |
12550 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
12551 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
12552 | return; | |
c0dd20ea DJ |
12553 | |
12554 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
12555 | if (TYPE_FIELD_NAME (type, 0) == NULL |
12556 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
12557 | || TYPE_FIELD_NAME (type, 1) == NULL | |
12558 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
12559 | return; | |
c0dd20ea DJ |
12560 | |
12561 | /* Find the type of the method. */ | |
0b92b5bb | 12562 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
12563 | if (pfn_type == NULL |
12564 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
12565 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 12566 | return; |
c0dd20ea DJ |
12567 | |
12568 | /* Look for the "this" argument. */ | |
12569 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
12570 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 12571 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 12572 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 12573 | return; |
c0dd20ea DJ |
12574 | |
12575 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
12576 | new_type = alloc_type (objfile); |
12577 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
12578 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
12579 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 12580 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 12581 | } |
1168df01 | 12582 | |
685b1105 JK |
12583 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
12584 | (icc). */ | |
12585 | ||
12586 | static int | |
12587 | producer_is_icc (struct dwarf2_cu *cu) | |
12588 | { | |
12589 | if (!cu->checked_producer) | |
12590 | check_producer (cu); | |
12591 | ||
12592 | return cu->producer_is_icc; | |
12593 | } | |
12594 | ||
c906108c | 12595 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
12596 | (definition) to create a type for the structure or union. Fill in |
12597 | the type's name and general properties; the members will not be | |
3d1d5ea3 | 12598 | processed until process_structure_scope. |
c906108c | 12599 | |
c767944b DJ |
12600 | NOTE: we need to call these functions regardless of whether or not the |
12601 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
12602 | structure or union. This gets the type entered into our set of |
12603 | user defined types. | |
12604 | ||
12605 | However, if the structure is incomplete (an opaque struct/union) | |
12606 | then suppress creating a symbol table entry for it since gdb only | |
12607 | wants to find the one with the complete definition. Note that if | |
12608 | it is complete, we just call new_symbol, which does it's own | |
12609 | checking about whether the struct/union is anonymous or not (and | |
12610 | suppresses creating a symbol table entry itself). */ | |
12611 | ||
f792889a | 12612 | static struct type * |
134d01f1 | 12613 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12614 | { |
e7c27a73 | 12615 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12616 | struct type *type; |
12617 | struct attribute *attr; | |
15d034d0 | 12618 | const char *name; |
c906108c | 12619 | |
348e048f DE |
12620 | /* If the definition of this type lives in .debug_types, read that type. |
12621 | Don't follow DW_AT_specification though, that will take us back up | |
12622 | the chain and we want to go down. */ | |
45e58e77 | 12623 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
12624 | if (attr) |
12625 | { | |
ac9ec31b | 12626 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 12627 | |
ac9ec31b | 12628 | /* The type's CU may not be the same as CU. |
02142a6c | 12629 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
12630 | return set_die_type (die, type, cu); |
12631 | } | |
12632 | ||
c0dd20ea | 12633 | type = alloc_type (objfile); |
c906108c | 12634 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 12635 | |
39cbfefa DJ |
12636 | name = dwarf2_name (die, cu); |
12637 | if (name != NULL) | |
c906108c | 12638 | { |
987504bb JJ |
12639 | if (cu->language == language_cplus |
12640 | || cu->language == language_java) | |
63d06c5c | 12641 | { |
15d034d0 | 12642 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
12643 | |
12644 | /* dwarf2_full_name might have already finished building the DIE's | |
12645 | type. If so, there is no need to continue. */ | |
12646 | if (get_die_type (die, cu) != NULL) | |
12647 | return get_die_type (die, cu); | |
12648 | ||
12649 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
12650 | if (die->tag == DW_TAG_structure_type |
12651 | || die->tag == DW_TAG_class_type) | |
12652 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
12653 | } |
12654 | else | |
12655 | { | |
d8151005 DJ |
12656 | /* The name is already allocated along with this objfile, so |
12657 | we don't need to duplicate it for the type. */ | |
7d455152 | 12658 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
12659 | if (die->tag == DW_TAG_class_type) |
12660 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 12661 | } |
c906108c SS |
12662 | } |
12663 | ||
12664 | if (die->tag == DW_TAG_structure_type) | |
12665 | { | |
12666 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
12667 | } | |
12668 | else if (die->tag == DW_TAG_union_type) | |
12669 | { | |
12670 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
12671 | } | |
12672 | else | |
12673 | { | |
c906108c SS |
12674 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
12675 | } | |
12676 | ||
0cc2414c TT |
12677 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
12678 | TYPE_DECLARED_CLASS (type) = 1; | |
12679 | ||
e142c38c | 12680 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12681 | if (attr) |
12682 | { | |
12683 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
12684 | } | |
12685 | else | |
12686 | { | |
12687 | TYPE_LENGTH (type) = 0; | |
12688 | } | |
12689 | ||
685b1105 JK |
12690 | if (producer_is_icc (cu)) |
12691 | { | |
12692 | /* ICC does not output the required DW_AT_declaration | |
12693 | on incomplete types, but gives them a size of zero. */ | |
12694 | } | |
12695 | else | |
12696 | TYPE_STUB_SUPPORTED (type) = 1; | |
12697 | ||
dc718098 | 12698 | if (die_is_declaration (die, cu)) |
876cecd0 | 12699 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
12700 | else if (attr == NULL && die->child == NULL |
12701 | && producer_is_realview (cu->producer)) | |
12702 | /* RealView does not output the required DW_AT_declaration | |
12703 | on incomplete types. */ | |
12704 | TYPE_STUB (type) = 1; | |
dc718098 | 12705 | |
c906108c SS |
12706 | /* We need to add the type field to the die immediately so we don't |
12707 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 12708 | type within the structure itself. */ |
1c379e20 | 12709 | set_die_type (die, type, cu); |
c906108c | 12710 | |
7e314c57 JK |
12711 | /* set_die_type should be already done. */ |
12712 | set_descriptive_type (type, die, cu); | |
12713 | ||
c767944b DJ |
12714 | return type; |
12715 | } | |
12716 | ||
12717 | /* Finish creating a structure or union type, including filling in | |
12718 | its members and creating a symbol for it. */ | |
12719 | ||
12720 | static void | |
12721 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
12722 | { | |
12723 | struct objfile *objfile = cu->objfile; | |
12724 | struct die_info *child_die = die->child; | |
12725 | struct type *type; | |
12726 | ||
12727 | type = get_die_type (die, cu); | |
12728 | if (type == NULL) | |
12729 | type = read_structure_type (die, cu); | |
12730 | ||
e142c38c | 12731 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
12732 | { |
12733 | struct field_info fi; | |
12734 | struct die_info *child_die; | |
34eaf542 | 12735 | VEC (symbolp) *template_args = NULL; |
c767944b | 12736 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
12737 | |
12738 | memset (&fi, 0, sizeof (struct field_info)); | |
12739 | ||
639d11d3 | 12740 | child_die = die->child; |
c906108c SS |
12741 | |
12742 | while (child_die && child_die->tag) | |
12743 | { | |
a9a9bd0f DC |
12744 | if (child_die->tag == DW_TAG_member |
12745 | || child_die->tag == DW_TAG_variable) | |
c906108c | 12746 | { |
a9a9bd0f DC |
12747 | /* NOTE: carlton/2002-11-05: A C++ static data member |
12748 | should be a DW_TAG_member that is a declaration, but | |
12749 | all versions of G++ as of this writing (so through at | |
12750 | least 3.2.1) incorrectly generate DW_TAG_variable | |
12751 | tags for them instead. */ | |
e7c27a73 | 12752 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 12753 | } |
8713b1b1 | 12754 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 12755 | { |
0963b4bd | 12756 | /* C++ member function. */ |
e7c27a73 | 12757 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
12758 | } |
12759 | else if (child_die->tag == DW_TAG_inheritance) | |
12760 | { | |
12761 | /* C++ base class field. */ | |
e7c27a73 | 12762 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 12763 | } |
98751a41 JK |
12764 | else if (child_die->tag == DW_TAG_typedef) |
12765 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
12766 | else if (child_die->tag == DW_TAG_template_type_param |
12767 | || child_die->tag == DW_TAG_template_value_param) | |
12768 | { | |
12769 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
12770 | ||
f1078f66 DJ |
12771 | if (arg != NULL) |
12772 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
12773 | } |
12774 | ||
c906108c SS |
12775 | child_die = sibling_die (child_die); |
12776 | } | |
12777 | ||
34eaf542 TT |
12778 | /* Attach template arguments to type. */ |
12779 | if (! VEC_empty (symbolp, template_args)) | |
12780 | { | |
12781 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12782 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12783 | = VEC_length (symbolp, template_args); | |
12784 | TYPE_TEMPLATE_ARGUMENTS (type) | |
12785 | = obstack_alloc (&objfile->objfile_obstack, | |
12786 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12787 | * sizeof (struct symbol *))); | |
12788 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
12789 | VEC_address (symbolp, template_args), | |
12790 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12791 | * sizeof (struct symbol *))); | |
12792 | VEC_free (symbolp, template_args); | |
12793 | } | |
12794 | ||
c906108c SS |
12795 | /* Attach fields and member functions to the type. */ |
12796 | if (fi.nfields) | |
e7c27a73 | 12797 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
12798 | if (fi.nfnfields) |
12799 | { | |
e7c27a73 | 12800 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 12801 | |
c5aa993b | 12802 | /* Get the type which refers to the base class (possibly this |
c906108c | 12803 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
12804 | class from the DW_AT_containing_type attribute. This use of |
12805 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 12806 | |
e142c38c | 12807 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 12808 | { |
e7c27a73 | 12809 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
12810 | |
12811 | TYPE_VPTR_BASETYPE (type) = t; | |
12812 | if (type == t) | |
12813 | { | |
c906108c SS |
12814 | int i; |
12815 | ||
12816 | /* Our own class provides vtbl ptr. */ | |
12817 | for (i = TYPE_NFIELDS (t) - 1; | |
12818 | i >= TYPE_N_BASECLASSES (t); | |
12819 | --i) | |
12820 | { | |
0d5cff50 | 12821 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 12822 | |
1168df01 | 12823 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
12824 | { |
12825 | TYPE_VPTR_FIELDNO (type) = i; | |
12826 | break; | |
12827 | } | |
12828 | } | |
12829 | ||
12830 | /* Complain if virtual function table field not found. */ | |
12831 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 12832 | complaint (&symfile_complaints, |
3e43a32a MS |
12833 | _("virtual function table pointer " |
12834 | "not found when defining class '%s'"), | |
4d3c2250 KB |
12835 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
12836 | ""); | |
c906108c SS |
12837 | } |
12838 | else | |
12839 | { | |
12840 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
12841 | } | |
12842 | } | |
f6235d4c EZ |
12843 | else if (cu->producer |
12844 | && strncmp (cu->producer, | |
12845 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
12846 | { | |
12847 | /* The IBM XLC compiler does not provide direct indication | |
12848 | of the containing type, but the vtable pointer is | |
12849 | always named __vfp. */ | |
12850 | ||
12851 | int i; | |
12852 | ||
12853 | for (i = TYPE_NFIELDS (type) - 1; | |
12854 | i >= TYPE_N_BASECLASSES (type); | |
12855 | --i) | |
12856 | { | |
12857 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
12858 | { | |
12859 | TYPE_VPTR_FIELDNO (type) = i; | |
12860 | TYPE_VPTR_BASETYPE (type) = type; | |
12861 | break; | |
12862 | } | |
12863 | } | |
12864 | } | |
c906108c | 12865 | } |
98751a41 JK |
12866 | |
12867 | /* Copy fi.typedef_field_list linked list elements content into the | |
12868 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
12869 | if (fi.typedef_field_list) | |
12870 | { | |
12871 | int i = fi.typedef_field_list_count; | |
12872 | ||
a0d7a4ff | 12873 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
12874 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
12875 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
12876 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
12877 | ||
12878 | /* Reverse the list order to keep the debug info elements order. */ | |
12879 | while (--i >= 0) | |
12880 | { | |
12881 | struct typedef_field *dest, *src; | |
6e70227d | 12882 | |
98751a41 JK |
12883 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
12884 | src = &fi.typedef_field_list->field; | |
12885 | fi.typedef_field_list = fi.typedef_field_list->next; | |
12886 | *dest = *src; | |
12887 | } | |
12888 | } | |
c767944b DJ |
12889 | |
12890 | do_cleanups (back_to); | |
eb2a6f42 TT |
12891 | |
12892 | if (HAVE_CPLUS_STRUCT (type)) | |
12893 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 12894 | } |
63d06c5c | 12895 | |
bb5ed363 | 12896 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 12897 | |
90aeadfc DC |
12898 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
12899 | snapshots) has been known to create a die giving a declaration | |
12900 | for a class that has, as a child, a die giving a definition for a | |
12901 | nested class. So we have to process our children even if the | |
12902 | current die is a declaration. Normally, of course, a declaration | |
12903 | won't have any children at all. */ | |
134d01f1 | 12904 | |
90aeadfc DC |
12905 | while (child_die != NULL && child_die->tag) |
12906 | { | |
12907 | if (child_die->tag == DW_TAG_member | |
12908 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
12909 | || child_die->tag == DW_TAG_inheritance |
12910 | || child_die->tag == DW_TAG_template_value_param | |
12911 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 12912 | { |
90aeadfc | 12913 | /* Do nothing. */ |
134d01f1 | 12914 | } |
90aeadfc DC |
12915 | else |
12916 | process_die (child_die, cu); | |
134d01f1 | 12917 | |
90aeadfc | 12918 | child_die = sibling_die (child_die); |
134d01f1 DJ |
12919 | } |
12920 | ||
fa4028e9 JB |
12921 | /* Do not consider external references. According to the DWARF standard, |
12922 | these DIEs are identified by the fact that they have no byte_size | |
12923 | attribute, and a declaration attribute. */ | |
12924 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
12925 | || !die_is_declaration (die, cu)) | |
c767944b | 12926 | new_symbol (die, type, cu); |
134d01f1 DJ |
12927 | } |
12928 | ||
12929 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
12930 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 12931 | |
f792889a | 12932 | static struct type * |
134d01f1 | 12933 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12934 | { |
e7c27a73 | 12935 | struct objfile *objfile = cu->objfile; |
c906108c | 12936 | struct type *type; |
c906108c | 12937 | struct attribute *attr; |
0114d602 | 12938 | const char *name; |
134d01f1 | 12939 | |
348e048f DE |
12940 | /* If the definition of this type lives in .debug_types, read that type. |
12941 | Don't follow DW_AT_specification though, that will take us back up | |
12942 | the chain and we want to go down. */ | |
45e58e77 | 12943 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
12944 | if (attr) |
12945 | { | |
ac9ec31b | 12946 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 12947 | |
ac9ec31b | 12948 | /* The type's CU may not be the same as CU. |
02142a6c | 12949 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
12950 | return set_die_type (die, type, cu); |
12951 | } | |
12952 | ||
c906108c SS |
12953 | type = alloc_type (objfile); |
12954 | ||
12955 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 12956 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 12957 | if (name != NULL) |
7d455152 | 12958 | TYPE_TAG_NAME (type) = name; |
c906108c | 12959 | |
e142c38c | 12960 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12961 | if (attr) |
12962 | { | |
12963 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
12964 | } | |
12965 | else | |
12966 | { | |
12967 | TYPE_LENGTH (type) = 0; | |
12968 | } | |
12969 | ||
137033e9 JB |
12970 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
12971 | declared as private in the package spec, and then defined only | |
12972 | inside the package body. Such types are known as Taft Amendment | |
12973 | Types. When another package uses such a type, an incomplete DIE | |
12974 | may be generated by the compiler. */ | |
02eb380e | 12975 | if (die_is_declaration (die, cu)) |
876cecd0 | 12976 | TYPE_STUB (type) = 1; |
02eb380e | 12977 | |
f792889a | 12978 | return set_die_type (die, type, cu); |
134d01f1 DJ |
12979 | } |
12980 | ||
12981 | /* Given a pointer to a die which begins an enumeration, process all | |
12982 | the dies that define the members of the enumeration, and create the | |
12983 | symbol for the enumeration type. | |
12984 | ||
12985 | NOTE: We reverse the order of the element list. */ | |
12986 | ||
12987 | static void | |
12988 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
12989 | { | |
f792889a | 12990 | struct type *this_type; |
134d01f1 | 12991 | |
f792889a DJ |
12992 | this_type = get_die_type (die, cu); |
12993 | if (this_type == NULL) | |
12994 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 12995 | |
639d11d3 | 12996 | if (die->child != NULL) |
c906108c | 12997 | { |
9dc481d3 DE |
12998 | struct die_info *child_die; |
12999 | struct symbol *sym; | |
13000 | struct field *fields = NULL; | |
13001 | int num_fields = 0; | |
13002 | int unsigned_enum = 1; | |
15d034d0 | 13003 | const char *name; |
cafec441 TT |
13004 | int flag_enum = 1; |
13005 | ULONGEST mask = 0; | |
9dc481d3 | 13006 | |
639d11d3 | 13007 | child_die = die->child; |
c906108c SS |
13008 | while (child_die && child_die->tag) |
13009 | { | |
13010 | if (child_die->tag != DW_TAG_enumerator) | |
13011 | { | |
e7c27a73 | 13012 | process_die (child_die, cu); |
c906108c SS |
13013 | } |
13014 | else | |
13015 | { | |
39cbfefa DJ |
13016 | name = dwarf2_name (child_die, cu); |
13017 | if (name) | |
c906108c | 13018 | { |
f792889a | 13019 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 13020 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
13021 | { |
13022 | unsigned_enum = 0; | |
13023 | flag_enum = 0; | |
13024 | } | |
13025 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
13026 | flag_enum = 0; | |
13027 | else | |
13028 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
13029 | |
13030 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13031 | { | |
13032 | fields = (struct field *) | |
13033 | xrealloc (fields, | |
13034 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13035 | * sizeof (struct field)); |
c906108c SS |
13036 | } |
13037 | ||
3567439c | 13038 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 13039 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 13040 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
13041 | FIELD_BITSIZE (fields[num_fields]) = 0; |
13042 | ||
13043 | num_fields++; | |
13044 | } | |
13045 | } | |
13046 | ||
13047 | child_die = sibling_die (child_die); | |
13048 | } | |
13049 | ||
13050 | if (num_fields) | |
13051 | { | |
f792889a DJ |
13052 | TYPE_NFIELDS (this_type) = num_fields; |
13053 | TYPE_FIELDS (this_type) = (struct field *) | |
13054 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
13055 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 13056 | sizeof (struct field) * num_fields); |
b8c9b27d | 13057 | xfree (fields); |
c906108c SS |
13058 | } |
13059 | if (unsigned_enum) | |
876cecd0 | 13060 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
13061 | if (flag_enum) |
13062 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 13063 | } |
134d01f1 | 13064 | |
6c83ed52 TT |
13065 | /* If we are reading an enum from a .debug_types unit, and the enum |
13066 | is a declaration, and the enum is not the signatured type in the | |
13067 | unit, then we do not want to add a symbol for it. Adding a | |
13068 | symbol would in some cases obscure the true definition of the | |
13069 | enum, giving users an incomplete type when the definition is | |
13070 | actually available. Note that we do not want to do this for all | |
13071 | enums which are just declarations, because C++0x allows forward | |
13072 | enum declarations. */ | |
3019eac3 | 13073 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
13074 | && die_is_declaration (die, cu)) |
13075 | { | |
52dc124a | 13076 | struct signatured_type *sig_type; |
6c83ed52 | 13077 | |
c0f78cd4 | 13078 | sig_type = (struct signatured_type *) cu->per_cu; |
3019eac3 DE |
13079 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
13080 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
13081 | return; |
13082 | } | |
13083 | ||
f792889a | 13084 | new_symbol (die, this_type, cu); |
c906108c SS |
13085 | } |
13086 | ||
13087 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
13088 | the DIE's type field. For now, this only handles one dimensional | |
13089 | arrays. */ | |
13090 | ||
f792889a | 13091 | static struct type * |
e7c27a73 | 13092 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13093 | { |
e7c27a73 | 13094 | struct objfile *objfile = cu->objfile; |
c906108c | 13095 | struct die_info *child_die; |
7e314c57 | 13096 | struct type *type; |
c906108c SS |
13097 | struct type *element_type, *range_type, *index_type; |
13098 | struct type **range_types = NULL; | |
13099 | struct attribute *attr; | |
13100 | int ndim = 0; | |
13101 | struct cleanup *back_to; | |
15d034d0 | 13102 | const char *name; |
c906108c | 13103 | |
e7c27a73 | 13104 | element_type = die_type (die, cu); |
c906108c | 13105 | |
7e314c57 JK |
13106 | /* The die_type call above may have already set the type for this DIE. */ |
13107 | type = get_die_type (die, cu); | |
13108 | if (type) | |
13109 | return type; | |
13110 | ||
c906108c SS |
13111 | /* Irix 6.2 native cc creates array types without children for |
13112 | arrays with unspecified length. */ | |
639d11d3 | 13113 | if (die->child == NULL) |
c906108c | 13114 | { |
46bf5051 | 13115 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 13116 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
13117 | type = create_array_type (NULL, element_type, range_type); |
13118 | return set_die_type (die, type, cu); | |
c906108c SS |
13119 | } |
13120 | ||
13121 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 13122 | child_die = die->child; |
c906108c SS |
13123 | while (child_die && child_die->tag) |
13124 | { | |
13125 | if (child_die->tag == DW_TAG_subrange_type) | |
13126 | { | |
f792889a | 13127 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 13128 | |
f792889a | 13129 | if (child_type != NULL) |
a02abb62 | 13130 | { |
0963b4bd MS |
13131 | /* The range type was succesfully read. Save it for the |
13132 | array type creation. */ | |
a02abb62 JB |
13133 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
13134 | { | |
13135 | range_types = (struct type **) | |
13136 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
13137 | * sizeof (struct type *)); | |
13138 | if (ndim == 0) | |
13139 | make_cleanup (free_current_contents, &range_types); | |
13140 | } | |
f792889a | 13141 | range_types[ndim++] = child_type; |
a02abb62 | 13142 | } |
c906108c SS |
13143 | } |
13144 | child_die = sibling_die (child_die); | |
13145 | } | |
13146 | ||
13147 | /* Dwarf2 dimensions are output from left to right, create the | |
13148 | necessary array types in backwards order. */ | |
7ca2d3a3 | 13149 | |
c906108c | 13150 | type = element_type; |
7ca2d3a3 DL |
13151 | |
13152 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
13153 | { | |
13154 | int i = 0; | |
9a619af0 | 13155 | |
7ca2d3a3 DL |
13156 | while (i < ndim) |
13157 | type = create_array_type (NULL, type, range_types[i++]); | |
13158 | } | |
13159 | else | |
13160 | { | |
13161 | while (ndim-- > 0) | |
13162 | type = create_array_type (NULL, type, range_types[ndim]); | |
13163 | } | |
c906108c | 13164 | |
f5f8a009 EZ |
13165 | /* Understand Dwarf2 support for vector types (like they occur on |
13166 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
13167 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
13168 | custom vendor extension. The main difference between a regular | |
13169 | array and the vector variant is that vectors are passed by value | |
13170 | to functions. */ | |
e142c38c | 13171 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 13172 | if (attr) |
ea37ba09 | 13173 | make_vector_type (type); |
f5f8a009 | 13174 | |
dbc98a8b KW |
13175 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
13176 | implementation may choose to implement triple vectors using this | |
13177 | attribute. */ | |
13178 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
13179 | if (attr) | |
13180 | { | |
13181 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
13182 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13183 | else | |
3e43a32a MS |
13184 | complaint (&symfile_complaints, |
13185 | _("DW_AT_byte_size for array type smaller " | |
13186 | "than the total size of elements")); | |
dbc98a8b KW |
13187 | } |
13188 | ||
39cbfefa DJ |
13189 | name = dwarf2_name (die, cu); |
13190 | if (name) | |
13191 | TYPE_NAME (type) = name; | |
6e70227d | 13192 | |
0963b4bd | 13193 | /* Install the type in the die. */ |
7e314c57 JK |
13194 | set_die_type (die, type, cu); |
13195 | ||
13196 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
13197 | set_descriptive_type (type, die, cu); |
13198 | ||
c906108c SS |
13199 | do_cleanups (back_to); |
13200 | ||
7e314c57 | 13201 | return type; |
c906108c SS |
13202 | } |
13203 | ||
7ca2d3a3 | 13204 | static enum dwarf_array_dim_ordering |
6e70227d | 13205 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
13206 | { |
13207 | struct attribute *attr; | |
13208 | ||
13209 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
13210 | ||
13211 | if (attr) return DW_SND (attr); | |
13212 | ||
0963b4bd MS |
13213 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
13214 | opposite order to the dwarf2 specification, but data is still | |
13215 | laid out as per normal fortran. | |
7ca2d3a3 | 13216 | |
0963b4bd MS |
13217 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
13218 | version checking. */ | |
7ca2d3a3 | 13219 | |
905e0470 PM |
13220 | if (cu->language == language_fortran |
13221 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
13222 | { |
13223 | return DW_ORD_row_major; | |
13224 | } | |
13225 | ||
6e70227d | 13226 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
13227 | { |
13228 | case array_column_major: | |
13229 | return DW_ORD_col_major; | |
13230 | case array_row_major: | |
13231 | default: | |
13232 | return DW_ORD_row_major; | |
13233 | }; | |
13234 | } | |
13235 | ||
72019c9c | 13236 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 13237 | the DIE's type field. */ |
72019c9c | 13238 | |
f792889a | 13239 | static struct type * |
72019c9c GM |
13240 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
13241 | { | |
7e314c57 JK |
13242 | struct type *domain_type, *set_type; |
13243 | struct attribute *attr; | |
f792889a | 13244 | |
7e314c57 JK |
13245 | domain_type = die_type (die, cu); |
13246 | ||
13247 | /* The die_type call above may have already set the type for this DIE. */ | |
13248 | set_type = get_die_type (die, cu); | |
13249 | if (set_type) | |
13250 | return set_type; | |
13251 | ||
13252 | set_type = create_set_type (NULL, domain_type); | |
13253 | ||
13254 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
13255 | if (attr) |
13256 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 13257 | |
f792889a | 13258 | return set_die_type (die, set_type, cu); |
72019c9c | 13259 | } |
7ca2d3a3 | 13260 | |
0971de02 TT |
13261 | /* A helper for read_common_block that creates a locexpr baton. |
13262 | SYM is the symbol which we are marking as computed. | |
13263 | COMMON_DIE is the DIE for the common block. | |
13264 | COMMON_LOC is the location expression attribute for the common | |
13265 | block itself. | |
13266 | MEMBER_LOC is the location expression attribute for the particular | |
13267 | member of the common block that we are processing. | |
13268 | CU is the CU from which the above come. */ | |
13269 | ||
13270 | static void | |
13271 | mark_common_block_symbol_computed (struct symbol *sym, | |
13272 | struct die_info *common_die, | |
13273 | struct attribute *common_loc, | |
13274 | struct attribute *member_loc, | |
13275 | struct dwarf2_cu *cu) | |
13276 | { | |
13277 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13278 | struct dwarf2_locexpr_baton *baton; | |
13279 | gdb_byte *ptr; | |
13280 | unsigned int cu_off; | |
13281 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
13282 | LONGEST offset = 0; | |
13283 | ||
13284 | gdb_assert (common_loc && member_loc); | |
13285 | gdb_assert (attr_form_is_block (common_loc)); | |
13286 | gdb_assert (attr_form_is_block (member_loc) | |
13287 | || attr_form_is_constant (member_loc)); | |
13288 | ||
13289 | baton = obstack_alloc (&objfile->objfile_obstack, | |
13290 | sizeof (struct dwarf2_locexpr_baton)); | |
13291 | baton->per_cu = cu->per_cu; | |
13292 | gdb_assert (baton->per_cu); | |
13293 | ||
13294 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
13295 | ||
13296 | if (attr_form_is_constant (member_loc)) | |
13297 | { | |
13298 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
13299 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
13300 | } | |
13301 | else | |
13302 | baton->size += DW_BLOCK (member_loc)->size; | |
13303 | ||
13304 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
13305 | baton->data = ptr; | |
13306 | ||
13307 | *ptr++ = DW_OP_call4; | |
13308 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
13309 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
13310 | ptr += 4; | |
13311 | ||
13312 | if (attr_form_is_constant (member_loc)) | |
13313 | { | |
13314 | *ptr++ = DW_OP_addr; | |
13315 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
13316 | ptr += cu->header.addr_size; | |
13317 | } | |
13318 | else | |
13319 | { | |
13320 | /* We have to copy the data here, because DW_OP_call4 will only | |
13321 | use a DW_AT_location attribute. */ | |
13322 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
13323 | ptr += DW_BLOCK (member_loc)->size; | |
13324 | } | |
13325 | ||
13326 | *ptr++ = DW_OP_plus; | |
13327 | gdb_assert (ptr - baton->data == baton->size); | |
13328 | ||
0971de02 | 13329 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 13330 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
13331 | } |
13332 | ||
4357ac6c TT |
13333 | /* Create appropriate locally-scoped variables for all the |
13334 | DW_TAG_common_block entries. Also create a struct common_block | |
13335 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
13336 | is used to sepate the common blocks name namespace from regular | |
13337 | variable names. */ | |
c906108c SS |
13338 | |
13339 | static void | |
e7c27a73 | 13340 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13341 | { |
0971de02 TT |
13342 | struct attribute *attr; |
13343 | ||
13344 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13345 | if (attr) | |
13346 | { | |
13347 | /* Support the .debug_loc offsets. */ | |
13348 | if (attr_form_is_block (attr)) | |
13349 | { | |
13350 | /* Ok. */ | |
13351 | } | |
13352 | else if (attr_form_is_section_offset (attr)) | |
13353 | { | |
13354 | dwarf2_complex_location_expr_complaint (); | |
13355 | attr = NULL; | |
13356 | } | |
13357 | else | |
13358 | { | |
13359 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
13360 | "common block member"); | |
13361 | attr = NULL; | |
13362 | } | |
13363 | } | |
13364 | ||
639d11d3 | 13365 | if (die->child != NULL) |
c906108c | 13366 | { |
4357ac6c TT |
13367 | struct objfile *objfile = cu->objfile; |
13368 | struct die_info *child_die; | |
13369 | size_t n_entries = 0, size; | |
13370 | struct common_block *common_block; | |
13371 | struct symbol *sym; | |
74ac6d43 | 13372 | |
4357ac6c TT |
13373 | for (child_die = die->child; |
13374 | child_die && child_die->tag; | |
13375 | child_die = sibling_die (child_die)) | |
13376 | ++n_entries; | |
13377 | ||
13378 | size = (sizeof (struct common_block) | |
13379 | + (n_entries - 1) * sizeof (struct symbol *)); | |
13380 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
13381 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
13382 | common_block->n_entries = 0; | |
13383 | ||
13384 | for (child_die = die->child; | |
13385 | child_die && child_die->tag; | |
13386 | child_die = sibling_die (child_die)) | |
13387 | { | |
13388 | /* Create the symbol in the DW_TAG_common_block block in the current | |
13389 | symbol scope. */ | |
e7c27a73 | 13390 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
13391 | if (sym != NULL) |
13392 | { | |
13393 | struct attribute *member_loc; | |
13394 | ||
13395 | common_block->contents[common_block->n_entries++] = sym; | |
13396 | ||
13397 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
13398 | cu); | |
13399 | if (member_loc) | |
13400 | { | |
13401 | /* GDB has handled this for a long time, but it is | |
13402 | not specified by DWARF. It seems to have been | |
13403 | emitted by gfortran at least as recently as: | |
13404 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
13405 | complaint (&symfile_complaints, | |
13406 | _("Variable in common block has " | |
13407 | "DW_AT_data_member_location " | |
13408 | "- DIE at 0x%x [in module %s]"), | |
4262abfb JK |
13409 | child_die->offset.sect_off, |
13410 | objfile_name (cu->objfile)); | |
0971de02 TT |
13411 | |
13412 | if (attr_form_is_section_offset (member_loc)) | |
13413 | dwarf2_complex_location_expr_complaint (); | |
13414 | else if (attr_form_is_constant (member_loc) | |
13415 | || attr_form_is_block (member_loc)) | |
13416 | { | |
13417 | if (attr) | |
13418 | mark_common_block_symbol_computed (sym, die, attr, | |
13419 | member_loc, cu); | |
13420 | } | |
13421 | else | |
13422 | dwarf2_complex_location_expr_complaint (); | |
13423 | } | |
13424 | } | |
c906108c | 13425 | } |
4357ac6c TT |
13426 | |
13427 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
13428 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
13429 | } |
13430 | } | |
13431 | ||
0114d602 | 13432 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 13433 | |
0114d602 DJ |
13434 | static struct type * |
13435 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 13436 | { |
e7c27a73 | 13437 | struct objfile *objfile = cu->objfile; |
0114d602 | 13438 | const char *previous_prefix, *name; |
9219021c | 13439 | int is_anonymous; |
0114d602 DJ |
13440 | struct type *type; |
13441 | ||
13442 | /* For extensions, reuse the type of the original namespace. */ | |
13443 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
13444 | { | |
13445 | struct die_info *ext_die; | |
13446 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 13447 | |
0114d602 DJ |
13448 | ext_die = dwarf2_extension (die, &ext_cu); |
13449 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
13450 | |
13451 | /* EXT_CU may not be the same as CU. | |
02142a6c | 13452 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
13453 | return set_die_type (die, type, cu); |
13454 | } | |
9219021c | 13455 | |
e142c38c | 13456 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
13457 | |
13458 | /* Now build the name of the current namespace. */ | |
13459 | ||
0114d602 DJ |
13460 | previous_prefix = determine_prefix (die, cu); |
13461 | if (previous_prefix[0] != '\0') | |
13462 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 13463 | previous_prefix, name, 0, cu); |
0114d602 DJ |
13464 | |
13465 | /* Create the type. */ | |
13466 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
13467 | objfile); | |
abee88f2 | 13468 | TYPE_NAME (type) = name; |
0114d602 DJ |
13469 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
13470 | ||
60531b24 | 13471 | return set_die_type (die, type, cu); |
0114d602 DJ |
13472 | } |
13473 | ||
13474 | /* Read a C++ namespace. */ | |
13475 | ||
13476 | static void | |
13477 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
13478 | { | |
13479 | struct objfile *objfile = cu->objfile; | |
0114d602 | 13480 | int is_anonymous; |
9219021c | 13481 | |
5c4e30ca DC |
13482 | /* Add a symbol associated to this if we haven't seen the namespace |
13483 | before. Also, add a using directive if it's an anonymous | |
13484 | namespace. */ | |
9219021c | 13485 | |
f2f0e013 | 13486 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
13487 | { |
13488 | struct type *type; | |
13489 | ||
0114d602 | 13490 | type = read_type_die (die, cu); |
e7c27a73 | 13491 | new_symbol (die, type, cu); |
5c4e30ca | 13492 | |
e8e80198 | 13493 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 13494 | if (is_anonymous) |
0114d602 DJ |
13495 | { |
13496 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 13497 | |
c0cc3a76 | 13498 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
12aaed36 | 13499 | NULL, NULL, 0, &objfile->objfile_obstack); |
0114d602 | 13500 | } |
5c4e30ca | 13501 | } |
9219021c | 13502 | |
639d11d3 | 13503 | if (die->child != NULL) |
d9fa45fe | 13504 | { |
639d11d3 | 13505 | struct die_info *child_die = die->child; |
6e70227d | 13506 | |
d9fa45fe DC |
13507 | while (child_die && child_die->tag) |
13508 | { | |
e7c27a73 | 13509 | process_die (child_die, cu); |
d9fa45fe DC |
13510 | child_die = sibling_die (child_die); |
13511 | } | |
13512 | } | |
38d518c9 EZ |
13513 | } |
13514 | ||
f55ee35c JK |
13515 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
13516 | imported module. Still we need that type as local Fortran "use ... only" | |
13517 | declaration imports depend on the created type in determine_prefix. */ | |
13518 | ||
13519 | static struct type * | |
13520 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
13521 | { | |
13522 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 13523 | const char *module_name; |
f55ee35c JK |
13524 | struct type *type; |
13525 | ||
13526 | module_name = dwarf2_name (die, cu); | |
13527 | if (!module_name) | |
3e43a32a MS |
13528 | complaint (&symfile_complaints, |
13529 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 13530 | die->offset.sect_off); |
f55ee35c JK |
13531 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
13532 | ||
13533 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
13534 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
13535 | ||
13536 | return set_die_type (die, type, cu); | |
13537 | } | |
13538 | ||
5d7cb8df JK |
13539 | /* Read a Fortran module. */ |
13540 | ||
13541 | static void | |
13542 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
13543 | { | |
13544 | struct die_info *child_die = die->child; | |
13545 | ||
5d7cb8df JK |
13546 | while (child_die && child_die->tag) |
13547 | { | |
13548 | process_die (child_die, cu); | |
13549 | child_die = sibling_die (child_die); | |
13550 | } | |
13551 | } | |
13552 | ||
38d518c9 EZ |
13553 | /* Return the name of the namespace represented by DIE. Set |
13554 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
13555 | namespace. */ | |
13556 | ||
13557 | static const char * | |
e142c38c | 13558 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
13559 | { |
13560 | struct die_info *current_die; | |
13561 | const char *name = NULL; | |
13562 | ||
13563 | /* Loop through the extensions until we find a name. */ | |
13564 | ||
13565 | for (current_die = die; | |
13566 | current_die != NULL; | |
f2f0e013 | 13567 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 13568 | { |
e142c38c | 13569 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
13570 | if (name != NULL) |
13571 | break; | |
13572 | } | |
13573 | ||
13574 | /* Is it an anonymous namespace? */ | |
13575 | ||
13576 | *is_anonymous = (name == NULL); | |
13577 | if (*is_anonymous) | |
2b1dbab0 | 13578 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
13579 | |
13580 | return name; | |
d9fa45fe DC |
13581 | } |
13582 | ||
c906108c SS |
13583 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
13584 | the user defined type vector. */ | |
13585 | ||
f792889a | 13586 | static struct type * |
e7c27a73 | 13587 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13588 | { |
5e2b427d | 13589 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 13590 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 13591 | struct type *type; |
8b2dbe47 KB |
13592 | struct attribute *attr_byte_size; |
13593 | struct attribute *attr_address_class; | |
13594 | int byte_size, addr_class; | |
7e314c57 JK |
13595 | struct type *target_type; |
13596 | ||
13597 | target_type = die_type (die, cu); | |
c906108c | 13598 | |
7e314c57 JK |
13599 | /* The die_type call above may have already set the type for this DIE. */ |
13600 | type = get_die_type (die, cu); | |
13601 | if (type) | |
13602 | return type; | |
13603 | ||
13604 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 13605 | |
e142c38c | 13606 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
13607 | if (attr_byte_size) |
13608 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 13609 | else |
8b2dbe47 KB |
13610 | byte_size = cu_header->addr_size; |
13611 | ||
e142c38c | 13612 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
13613 | if (attr_address_class) |
13614 | addr_class = DW_UNSND (attr_address_class); | |
13615 | else | |
13616 | addr_class = DW_ADDR_none; | |
13617 | ||
13618 | /* If the pointer size or address class is different than the | |
13619 | default, create a type variant marked as such and set the | |
13620 | length accordingly. */ | |
13621 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 13622 | { |
5e2b427d | 13623 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
13624 | { |
13625 | int type_flags; | |
13626 | ||
849957d9 | 13627 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 13628 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
13629 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
13630 | == 0); | |
8b2dbe47 KB |
13631 | type = make_type_with_address_space (type, type_flags); |
13632 | } | |
13633 | else if (TYPE_LENGTH (type) != byte_size) | |
13634 | { | |
3e43a32a MS |
13635 | complaint (&symfile_complaints, |
13636 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 13637 | } |
6e70227d | 13638 | else |
9a619af0 MS |
13639 | { |
13640 | /* Should we also complain about unhandled address classes? */ | |
13641 | } | |
c906108c | 13642 | } |
8b2dbe47 KB |
13643 | |
13644 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 13645 | return set_die_type (die, type, cu); |
c906108c SS |
13646 | } |
13647 | ||
13648 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
13649 | the user defined type vector. */ | |
13650 | ||
f792889a | 13651 | static struct type * |
e7c27a73 | 13652 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
13653 | { |
13654 | struct type *type; | |
13655 | struct type *to_type; | |
13656 | struct type *domain; | |
13657 | ||
e7c27a73 DJ |
13658 | to_type = die_type (die, cu); |
13659 | domain = die_containing_type (die, cu); | |
0d5de010 | 13660 | |
7e314c57 JK |
13661 | /* The calls above may have already set the type for this DIE. */ |
13662 | type = get_die_type (die, cu); | |
13663 | if (type) | |
13664 | return type; | |
13665 | ||
0d5de010 DJ |
13666 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
13667 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
13668 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
13669 | { | |
13670 | struct type *new_type = alloc_type (cu->objfile); | |
13671 | ||
13672 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
13673 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
13674 | TYPE_VARARGS (to_type)); | |
13675 | type = lookup_methodptr_type (new_type); | |
13676 | } | |
0d5de010 DJ |
13677 | else |
13678 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 13679 | |
f792889a | 13680 | return set_die_type (die, type, cu); |
c906108c SS |
13681 | } |
13682 | ||
13683 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
13684 | the user defined type vector. */ | |
13685 | ||
f792889a | 13686 | static struct type * |
e7c27a73 | 13687 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13688 | { |
e7c27a73 | 13689 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 13690 | struct type *type, *target_type; |
c906108c SS |
13691 | struct attribute *attr; |
13692 | ||
7e314c57 JK |
13693 | target_type = die_type (die, cu); |
13694 | ||
13695 | /* The die_type call above may have already set the type for this DIE. */ | |
13696 | type = get_die_type (die, cu); | |
13697 | if (type) | |
13698 | return type; | |
13699 | ||
13700 | type = lookup_reference_type (target_type); | |
e142c38c | 13701 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13702 | if (attr) |
13703 | { | |
13704 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13705 | } | |
13706 | else | |
13707 | { | |
107d2387 | 13708 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 13709 | } |
f792889a | 13710 | return set_die_type (die, type, cu); |
c906108c SS |
13711 | } |
13712 | ||
f792889a | 13713 | static struct type * |
e7c27a73 | 13714 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13715 | { |
f792889a | 13716 | struct type *base_type, *cv_type; |
c906108c | 13717 | |
e7c27a73 | 13718 | base_type = die_type (die, cu); |
7e314c57 JK |
13719 | |
13720 | /* The die_type call above may have already set the type for this DIE. */ | |
13721 | cv_type = get_die_type (die, cu); | |
13722 | if (cv_type) | |
13723 | return cv_type; | |
13724 | ||
2f608a3a KW |
13725 | /* In case the const qualifier is applied to an array type, the element type |
13726 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
13727 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
13728 | { | |
13729 | struct type *el_type, *inner_array; | |
13730 | ||
13731 | base_type = copy_type (base_type); | |
13732 | inner_array = base_type; | |
13733 | ||
13734 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
13735 | { | |
13736 | TYPE_TARGET_TYPE (inner_array) = | |
13737 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
13738 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
13739 | } | |
13740 | ||
13741 | el_type = TYPE_TARGET_TYPE (inner_array); | |
13742 | TYPE_TARGET_TYPE (inner_array) = | |
13743 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
13744 | ||
13745 | return set_die_type (die, base_type, cu); | |
13746 | } | |
13747 | ||
f792889a DJ |
13748 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
13749 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
13750 | } |
13751 | ||
f792889a | 13752 | static struct type * |
e7c27a73 | 13753 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13754 | { |
f792889a | 13755 | struct type *base_type, *cv_type; |
c906108c | 13756 | |
e7c27a73 | 13757 | base_type = die_type (die, cu); |
7e314c57 JK |
13758 | |
13759 | /* The die_type call above may have already set the type for this DIE. */ | |
13760 | cv_type = get_die_type (die, cu); | |
13761 | if (cv_type) | |
13762 | return cv_type; | |
13763 | ||
f792889a DJ |
13764 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
13765 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
13766 | } |
13767 | ||
06d66ee9 TT |
13768 | /* Handle DW_TAG_restrict_type. */ |
13769 | ||
13770 | static struct type * | |
13771 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
13772 | { | |
13773 | struct type *base_type, *cv_type; | |
13774 | ||
13775 | base_type = die_type (die, cu); | |
13776 | ||
13777 | /* The die_type call above may have already set the type for this DIE. */ | |
13778 | cv_type = get_die_type (die, cu); | |
13779 | if (cv_type) | |
13780 | return cv_type; | |
13781 | ||
13782 | cv_type = make_restrict_type (base_type); | |
13783 | return set_die_type (die, cv_type, cu); | |
13784 | } | |
13785 | ||
c906108c SS |
13786 | /* Extract all information from a DW_TAG_string_type DIE and add to |
13787 | the user defined type vector. It isn't really a user defined type, | |
13788 | but it behaves like one, with other DIE's using an AT_user_def_type | |
13789 | attribute to reference it. */ | |
13790 | ||
f792889a | 13791 | static struct type * |
e7c27a73 | 13792 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13793 | { |
e7c27a73 | 13794 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 13795 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13796 | struct type *type, *range_type, *index_type, *char_type; |
13797 | struct attribute *attr; | |
13798 | unsigned int length; | |
13799 | ||
e142c38c | 13800 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
13801 | if (attr) |
13802 | { | |
13803 | length = DW_UNSND (attr); | |
13804 | } | |
13805 | else | |
13806 | { | |
0963b4bd | 13807 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 13808 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
13809 | if (attr) |
13810 | { | |
13811 | length = DW_UNSND (attr); | |
13812 | } | |
13813 | else | |
13814 | { | |
13815 | length = 1; | |
13816 | } | |
c906108c | 13817 | } |
6ccb9162 | 13818 | |
46bf5051 | 13819 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 13820 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
13821 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
13822 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 13823 | |
f792889a | 13824 | return set_die_type (die, type, cu); |
c906108c SS |
13825 | } |
13826 | ||
4d804846 JB |
13827 | /* Assuming that DIE corresponds to a function, returns nonzero |
13828 | if the function is prototyped. */ | |
13829 | ||
13830 | static int | |
13831 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
13832 | { | |
13833 | struct attribute *attr; | |
13834 | ||
13835 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
13836 | if (attr && (DW_UNSND (attr) != 0)) | |
13837 | return 1; | |
13838 | ||
13839 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
13840 | is only meaninful for C, but the concept also extends to other | |
13841 | languages that allow unprototyped functions (Eg: Objective C). | |
13842 | For all other languages, assume that functions are always | |
13843 | prototyped. */ | |
13844 | if (cu->language != language_c | |
13845 | && cu->language != language_objc | |
13846 | && cu->language != language_opencl) | |
13847 | return 1; | |
13848 | ||
13849 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
13850 | prototyped and unprototyped functions; default to prototyped, | |
13851 | since that is more common in modern code (and RealView warns | |
13852 | about unprototyped functions). */ | |
13853 | if (producer_is_realview (cu->producer)) | |
13854 | return 1; | |
13855 | ||
13856 | return 0; | |
13857 | } | |
13858 | ||
c906108c SS |
13859 | /* Handle DIES due to C code like: |
13860 | ||
13861 | struct foo | |
c5aa993b JM |
13862 | { |
13863 | int (*funcp)(int a, long l); | |
13864 | int b; | |
13865 | }; | |
c906108c | 13866 | |
0963b4bd | 13867 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 13868 | |
f792889a | 13869 | static struct type * |
e7c27a73 | 13870 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13871 | { |
bb5ed363 | 13872 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
13873 | struct type *type; /* Type that this function returns. */ |
13874 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
13875 | struct attribute *attr; |
13876 | ||
e7c27a73 | 13877 | type = die_type (die, cu); |
7e314c57 JK |
13878 | |
13879 | /* The die_type call above may have already set the type for this DIE. */ | |
13880 | ftype = get_die_type (die, cu); | |
13881 | if (ftype) | |
13882 | return ftype; | |
13883 | ||
0c8b41f1 | 13884 | ftype = lookup_function_type (type); |
c906108c | 13885 | |
4d804846 | 13886 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 13887 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 13888 | |
c055b101 CV |
13889 | /* Store the calling convention in the type if it's available in |
13890 | the subroutine die. Otherwise set the calling convention to | |
13891 | the default value DW_CC_normal. */ | |
13892 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
13893 | if (attr) |
13894 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
13895 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
13896 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
13897 | else | |
13898 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
13899 | |
13900 | /* We need to add the subroutine type to the die immediately so | |
13901 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 13902 | declared as the same subroutine type. */ |
76c10ea2 | 13903 | set_die_type (die, ftype, cu); |
6e70227d | 13904 | |
639d11d3 | 13905 | if (die->child != NULL) |
c906108c | 13906 | { |
bb5ed363 | 13907 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 13908 | struct die_info *child_die; |
8072405b | 13909 | int nparams, iparams; |
c906108c SS |
13910 | |
13911 | /* Count the number of parameters. | |
13912 | FIXME: GDB currently ignores vararg functions, but knows about | |
13913 | vararg member functions. */ | |
8072405b | 13914 | nparams = 0; |
639d11d3 | 13915 | child_die = die->child; |
c906108c SS |
13916 | while (child_die && child_die->tag) |
13917 | { | |
13918 | if (child_die->tag == DW_TAG_formal_parameter) | |
13919 | nparams++; | |
13920 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 13921 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
13922 | child_die = sibling_die (child_die); |
13923 | } | |
13924 | ||
13925 | /* Allocate storage for parameters and fill them in. */ | |
13926 | TYPE_NFIELDS (ftype) = nparams; | |
13927 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 13928 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 13929 | |
8072405b JK |
13930 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
13931 | even if we error out during the parameters reading below. */ | |
13932 | for (iparams = 0; iparams < nparams; iparams++) | |
13933 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
13934 | ||
13935 | iparams = 0; | |
639d11d3 | 13936 | child_die = die->child; |
c906108c SS |
13937 | while (child_die && child_die->tag) |
13938 | { | |
13939 | if (child_die->tag == DW_TAG_formal_parameter) | |
13940 | { | |
3ce3b1ba PA |
13941 | struct type *arg_type; |
13942 | ||
13943 | /* DWARF version 2 has no clean way to discern C++ | |
13944 | static and non-static member functions. G++ helps | |
13945 | GDB by marking the first parameter for non-static | |
13946 | member functions (which is the this pointer) as | |
13947 | artificial. We pass this information to | |
13948 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
13949 | ||
13950 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
13951 | 4.5 does not yet generate. */ | |
e142c38c | 13952 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
13953 | if (attr) |
13954 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
13955 | else | |
418835cc KS |
13956 | { |
13957 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
13958 | ||
13959 | /* GCC/43521: In java, the formal parameter | |
13960 | "this" is sometimes not marked with DW_AT_artificial. */ | |
13961 | if (cu->language == language_java) | |
13962 | { | |
13963 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 13964 | |
418835cc KS |
13965 | if (name && !strcmp (name, "this")) |
13966 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
13967 | } | |
13968 | } | |
3ce3b1ba PA |
13969 | arg_type = die_type (child_die, cu); |
13970 | ||
13971 | /* RealView does not mark THIS as const, which the testsuite | |
13972 | expects. GCC marks THIS as const in method definitions, | |
13973 | but not in the class specifications (GCC PR 43053). */ | |
13974 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
13975 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
13976 | { | |
13977 | int is_this = 0; | |
13978 | struct dwarf2_cu *arg_cu = cu; | |
13979 | const char *name = dwarf2_name (child_die, cu); | |
13980 | ||
13981 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
13982 | if (attr) | |
13983 | { | |
13984 | /* If the compiler emits this, use it. */ | |
13985 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
13986 | is_this = 1; | |
13987 | } | |
13988 | else if (name && strcmp (name, "this") == 0) | |
13989 | /* Function definitions will have the argument names. */ | |
13990 | is_this = 1; | |
13991 | else if (name == NULL && iparams == 0) | |
13992 | /* Declarations may not have the names, so like | |
13993 | elsewhere in GDB, assume an artificial first | |
13994 | argument is "this". */ | |
13995 | is_this = 1; | |
13996 | ||
13997 | if (is_this) | |
13998 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
13999 | arg_type, 0); | |
14000 | } | |
14001 | ||
14002 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
14003 | iparams++; |
14004 | } | |
14005 | child_die = sibling_die (child_die); | |
14006 | } | |
14007 | } | |
14008 | ||
76c10ea2 | 14009 | return ftype; |
c906108c SS |
14010 | } |
14011 | ||
f792889a | 14012 | static struct type * |
e7c27a73 | 14013 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14014 | { |
e7c27a73 | 14015 | struct objfile *objfile = cu->objfile; |
0114d602 | 14016 | const char *name = NULL; |
3c8e0968 | 14017 | struct type *this_type, *target_type; |
c906108c | 14018 | |
94af9270 | 14019 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 14020 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 | 14021 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
abee88f2 | 14022 | TYPE_NAME (this_type) = name; |
f792889a | 14023 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
14024 | target_type = die_type (die, cu); |
14025 | if (target_type != this_type) | |
14026 | TYPE_TARGET_TYPE (this_type) = target_type; | |
14027 | else | |
14028 | { | |
14029 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
14030 | spec and cause infinite loops in GDB. */ | |
14031 | complaint (&symfile_complaints, | |
14032 | _("Self-referential DW_TAG_typedef " | |
14033 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14034 | die->offset.sect_off, objfile_name (objfile)); |
3c8e0968 DE |
14035 | TYPE_TARGET_TYPE (this_type) = NULL; |
14036 | } | |
f792889a | 14037 | return this_type; |
c906108c SS |
14038 | } |
14039 | ||
14040 | /* Find a representation of a given base type and install | |
14041 | it in the TYPE field of the die. */ | |
14042 | ||
f792889a | 14043 | static struct type * |
e7c27a73 | 14044 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14045 | { |
e7c27a73 | 14046 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14047 | struct type *type; |
14048 | struct attribute *attr; | |
14049 | int encoding = 0, size = 0; | |
15d034d0 | 14050 | const char *name; |
6ccb9162 UW |
14051 | enum type_code code = TYPE_CODE_INT; |
14052 | int type_flags = 0; | |
14053 | struct type *target_type = NULL; | |
c906108c | 14054 | |
e142c38c | 14055 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
14056 | if (attr) |
14057 | { | |
14058 | encoding = DW_UNSND (attr); | |
14059 | } | |
e142c38c | 14060 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14061 | if (attr) |
14062 | { | |
14063 | size = DW_UNSND (attr); | |
14064 | } | |
39cbfefa | 14065 | name = dwarf2_name (die, cu); |
6ccb9162 | 14066 | if (!name) |
c906108c | 14067 | { |
6ccb9162 UW |
14068 | complaint (&symfile_complaints, |
14069 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 14070 | } |
6ccb9162 UW |
14071 | |
14072 | switch (encoding) | |
c906108c | 14073 | { |
6ccb9162 UW |
14074 | case DW_ATE_address: |
14075 | /* Turn DW_ATE_address into a void * pointer. */ | |
14076 | code = TYPE_CODE_PTR; | |
14077 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14078 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
14079 | break; | |
14080 | case DW_ATE_boolean: | |
14081 | code = TYPE_CODE_BOOL; | |
14082 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14083 | break; | |
14084 | case DW_ATE_complex_float: | |
14085 | code = TYPE_CODE_COMPLEX; | |
14086 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
14087 | break; | |
14088 | case DW_ATE_decimal_float: | |
14089 | code = TYPE_CODE_DECFLOAT; | |
14090 | break; | |
14091 | case DW_ATE_float: | |
14092 | code = TYPE_CODE_FLT; | |
14093 | break; | |
14094 | case DW_ATE_signed: | |
14095 | break; | |
14096 | case DW_ATE_unsigned: | |
14097 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
14098 | if (cu->language == language_fortran |
14099 | && name | |
14100 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
14101 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
14102 | break; |
14103 | case DW_ATE_signed_char: | |
6e70227d | 14104 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14105 | || cu->language == language_pascal |
14106 | || cu->language == language_fortran) | |
6ccb9162 UW |
14107 | code = TYPE_CODE_CHAR; |
14108 | break; | |
14109 | case DW_ATE_unsigned_char: | |
868a0084 | 14110 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14111 | || cu->language == language_pascal |
14112 | || cu->language == language_fortran) | |
6ccb9162 UW |
14113 | code = TYPE_CODE_CHAR; |
14114 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14115 | break; | |
75079b2b TT |
14116 | case DW_ATE_UTF: |
14117 | /* We just treat this as an integer and then recognize the | |
14118 | type by name elsewhere. */ | |
14119 | break; | |
14120 | ||
6ccb9162 UW |
14121 | default: |
14122 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
14123 | dwarf_type_encoding_name (encoding)); | |
14124 | break; | |
c906108c | 14125 | } |
6ccb9162 | 14126 | |
0114d602 DJ |
14127 | type = init_type (code, size, type_flags, NULL, objfile); |
14128 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
14129 | TYPE_TARGET_TYPE (type) = target_type; |
14130 | ||
0114d602 | 14131 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 14132 | TYPE_NOSIGN (type) = 1; |
0114d602 | 14133 | |
f792889a | 14134 | return set_die_type (die, type, cu); |
c906108c SS |
14135 | } |
14136 | ||
a02abb62 JB |
14137 | /* Read the given DW_AT_subrange DIE. */ |
14138 | ||
f792889a | 14139 | static struct type * |
a02abb62 JB |
14140 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
14141 | { | |
4c9ad8c2 | 14142 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
14143 | struct type *range_type; |
14144 | struct attribute *attr; | |
4fae6e18 JK |
14145 | LONGEST low, high; |
14146 | int low_default_is_valid; | |
15d034d0 | 14147 | const char *name; |
43bbcdc2 | 14148 | LONGEST negative_mask; |
e77813c8 | 14149 | |
4c9ad8c2 TT |
14150 | orig_base_type = die_type (die, cu); |
14151 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
14152 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
14153 | creating the range type, but we use the result of check_typedef | |
14154 | when examining properties of the type. */ | |
14155 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 14156 | |
7e314c57 JK |
14157 | /* The die_type call above may have already set the type for this DIE. */ |
14158 | range_type = get_die_type (die, cu); | |
14159 | if (range_type) | |
14160 | return range_type; | |
14161 | ||
4fae6e18 JK |
14162 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
14163 | omitting DW_AT_lower_bound. */ | |
14164 | switch (cu->language) | |
6e70227d | 14165 | { |
4fae6e18 JK |
14166 | case language_c: |
14167 | case language_cplus: | |
14168 | low = 0; | |
14169 | low_default_is_valid = 1; | |
14170 | break; | |
14171 | case language_fortran: | |
14172 | low = 1; | |
14173 | low_default_is_valid = 1; | |
14174 | break; | |
14175 | case language_d: | |
14176 | case language_java: | |
14177 | case language_objc: | |
14178 | low = 0; | |
14179 | low_default_is_valid = (cu->header.version >= 4); | |
14180 | break; | |
14181 | case language_ada: | |
14182 | case language_m2: | |
14183 | case language_pascal: | |
a02abb62 | 14184 | low = 1; |
4fae6e18 JK |
14185 | low_default_is_valid = (cu->header.version >= 4); |
14186 | break; | |
14187 | default: | |
14188 | low = 0; | |
14189 | low_default_is_valid = 0; | |
14190 | break; | |
a02abb62 JB |
14191 | } |
14192 | ||
dd5e6932 DJ |
14193 | /* FIXME: For variable sized arrays either of these could be |
14194 | a variable rather than a constant value. We'll allow it, | |
14195 | but we don't know how to handle it. */ | |
e142c38c | 14196 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 14197 | if (attr) |
4fae6e18 JK |
14198 | low = dwarf2_get_attr_constant_value (attr, low); |
14199 | else if (!low_default_is_valid) | |
14200 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
14201 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14202 | die->offset.sect_off, objfile_name (cu->objfile)); |
a02abb62 | 14203 | |
e142c38c | 14204 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 14205 | if (attr) |
6e70227d | 14206 | { |
7771576e | 14207 | if (attr_form_is_block (attr) || attr_form_is_ref (attr)) |
a02abb62 JB |
14208 | { |
14209 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 14210 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
14211 | FIXME: GDB does not yet know how to handle dynamic |
14212 | arrays properly, treat them as arrays with unspecified | |
14213 | length for now. | |
14214 | ||
14215 | FIXME: jimb/2003-09-22: GDB does not really know | |
14216 | how to handle arrays of unspecified length | |
14217 | either; we just represent them as zero-length | |
14218 | arrays. Choose an appropriate upper bound given | |
14219 | the lower bound we've computed above. */ | |
14220 | high = low - 1; | |
14221 | } | |
14222 | else | |
14223 | high = dwarf2_get_attr_constant_value (attr, 1); | |
14224 | } | |
e77813c8 PM |
14225 | else |
14226 | { | |
14227 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
14228 | if (attr) | |
14229 | { | |
14230 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
14231 | high = low + count - 1; | |
14232 | } | |
c2ff108b JK |
14233 | else |
14234 | { | |
14235 | /* Unspecified array length. */ | |
14236 | high = low - 1; | |
14237 | } | |
e77813c8 PM |
14238 | } |
14239 | ||
14240 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
14241 | without specifying a base type. | |
14242 | In that case, the base type must be set to the type of | |
14243 | the lower bound, upper bound or count, in that order, if any of these | |
14244 | three attributes references an object that has a type. | |
14245 | If no base type is found, the Dwarf-2 specifications say that | |
14246 | a signed integer type of size equal to the size of an address should | |
14247 | be used. | |
14248 | For the following C code: `extern char gdb_int [];' | |
14249 | GCC produces an empty range DIE. | |
14250 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 14251 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
14252 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
14253 | { | |
14254 | struct objfile *objfile = cu->objfile; | |
14255 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
14256 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
14257 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
14258 | ||
14259 | /* Test "int", "long int", and "long long int" objfile types, | |
14260 | and select the first one having a size above or equal to the | |
14261 | architecture address size. */ | |
14262 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14263 | base_type = int_type; | |
14264 | else | |
14265 | { | |
14266 | int_type = objfile_type (objfile)->builtin_long; | |
14267 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14268 | base_type = int_type; | |
14269 | else | |
14270 | { | |
14271 | int_type = objfile_type (objfile)->builtin_long_long; | |
14272 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14273 | base_type = int_type; | |
14274 | } | |
14275 | } | |
14276 | } | |
a02abb62 | 14277 | |
6e70227d | 14278 | negative_mask = |
43bbcdc2 PH |
14279 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
14280 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
14281 | low |= negative_mask; | |
14282 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
14283 | high |= negative_mask; | |
14284 | ||
4c9ad8c2 | 14285 | range_type = create_range_type (NULL, orig_base_type, low, high); |
a02abb62 | 14286 | |
bbb0eef6 JK |
14287 | /* Mark arrays with dynamic length at least as an array of unspecified |
14288 | length. GDB could check the boundary but before it gets implemented at | |
14289 | least allow accessing the array elements. */ | |
d48323d8 | 14290 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
14291 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
14292 | ||
c2ff108b JK |
14293 | /* Ada expects an empty array on no boundary attributes. */ |
14294 | if (attr == NULL && cu->language != language_ada) | |
14295 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
14296 | ||
39cbfefa DJ |
14297 | name = dwarf2_name (die, cu); |
14298 | if (name) | |
14299 | TYPE_NAME (range_type) = name; | |
6e70227d | 14300 | |
e142c38c | 14301 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
14302 | if (attr) |
14303 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
14304 | ||
7e314c57 JK |
14305 | set_die_type (die, range_type, cu); |
14306 | ||
14307 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
14308 | set_descriptive_type (range_type, die, cu); |
14309 | ||
7e314c57 | 14310 | return range_type; |
a02abb62 | 14311 | } |
6e70227d | 14312 | |
f792889a | 14313 | static struct type * |
81a17f79 JB |
14314 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
14315 | { | |
14316 | struct type *type; | |
81a17f79 | 14317 | |
81a17f79 JB |
14318 | /* For now, we only support the C meaning of an unspecified type: void. */ |
14319 | ||
0114d602 DJ |
14320 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
14321 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 14322 | |
f792889a | 14323 | return set_die_type (die, type, cu); |
81a17f79 | 14324 | } |
a02abb62 | 14325 | |
639d11d3 DC |
14326 | /* Read a single die and all its descendents. Set the die's sibling |
14327 | field to NULL; set other fields in the die correctly, and set all | |
14328 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
14329 | location of the info_ptr after reading all of those dies. PARENT | |
14330 | is the parent of the die in question. */ | |
14331 | ||
14332 | static struct die_info * | |
dee91e82 | 14333 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
14334 | const gdb_byte *info_ptr, |
14335 | const gdb_byte **new_info_ptr, | |
dee91e82 | 14336 | struct die_info *parent) |
639d11d3 DC |
14337 | { |
14338 | struct die_info *die; | |
d521ce57 | 14339 | const gdb_byte *cur_ptr; |
639d11d3 DC |
14340 | int has_children; |
14341 | ||
bf6af496 | 14342 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
14343 | if (die == NULL) |
14344 | { | |
14345 | *new_info_ptr = cur_ptr; | |
14346 | return NULL; | |
14347 | } | |
93311388 | 14348 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
14349 | |
14350 | if (has_children) | |
bf6af496 | 14351 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
14352 | else |
14353 | { | |
14354 | die->child = NULL; | |
14355 | *new_info_ptr = cur_ptr; | |
14356 | } | |
14357 | ||
14358 | die->sibling = NULL; | |
14359 | die->parent = parent; | |
14360 | return die; | |
14361 | } | |
14362 | ||
14363 | /* Read a die, all of its descendents, and all of its siblings; set | |
14364 | all of the fields of all of the dies correctly. Arguments are as | |
14365 | in read_die_and_children. */ | |
14366 | ||
14367 | static struct die_info * | |
bf6af496 | 14368 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
14369 | const gdb_byte *info_ptr, |
14370 | const gdb_byte **new_info_ptr, | |
bf6af496 | 14371 | struct die_info *parent) |
639d11d3 DC |
14372 | { |
14373 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 14374 | const gdb_byte *cur_ptr; |
639d11d3 | 14375 | |
c906108c | 14376 | cur_ptr = info_ptr; |
639d11d3 DC |
14377 | first_die = last_sibling = NULL; |
14378 | ||
14379 | while (1) | |
c906108c | 14380 | { |
639d11d3 | 14381 | struct die_info *die |
dee91e82 | 14382 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 14383 | |
1d325ec1 | 14384 | if (die == NULL) |
c906108c | 14385 | { |
639d11d3 DC |
14386 | *new_info_ptr = cur_ptr; |
14387 | return first_die; | |
c906108c | 14388 | } |
1d325ec1 DJ |
14389 | |
14390 | if (!first_die) | |
14391 | first_die = die; | |
c906108c | 14392 | else |
1d325ec1 DJ |
14393 | last_sibling->sibling = die; |
14394 | ||
14395 | last_sibling = die; | |
c906108c | 14396 | } |
c906108c SS |
14397 | } |
14398 | ||
bf6af496 DE |
14399 | /* Read a die, all of its descendents, and all of its siblings; set |
14400 | all of the fields of all of the dies correctly. Arguments are as | |
14401 | in read_die_and_children. | |
14402 | This the main entry point for reading a DIE and all its children. */ | |
14403 | ||
14404 | static struct die_info * | |
14405 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
14406 | const gdb_byte *info_ptr, |
14407 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
14408 | struct die_info *parent) |
14409 | { | |
14410 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
14411 | new_info_ptr, parent); | |
14412 | ||
14413 | if (dwarf2_die_debug) | |
14414 | { | |
14415 | fprintf_unfiltered (gdb_stdlog, | |
14416 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 14417 | get_section_name (reader->die_section), |
bf6af496 DE |
14418 | (unsigned) (info_ptr - reader->die_section->buffer), |
14419 | bfd_get_filename (reader->abfd)); | |
14420 | dump_die (die, dwarf2_die_debug); | |
14421 | } | |
14422 | ||
14423 | return die; | |
14424 | } | |
14425 | ||
3019eac3 DE |
14426 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
14427 | attributes. | |
14428 | The caller is responsible for filling in the extra attributes | |
14429 | and updating (*DIEP)->num_attrs. | |
14430 | Set DIEP to point to a newly allocated die with its information, | |
14431 | except for its child, sibling, and parent fields. | |
14432 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 14433 | |
d521ce57 | 14434 | static const gdb_byte * |
3019eac3 | 14435 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 14436 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 14437 | int *has_children, int num_extra_attrs) |
93311388 | 14438 | { |
b64f50a1 JK |
14439 | unsigned int abbrev_number, bytes_read, i; |
14440 | sect_offset offset; | |
93311388 DE |
14441 | struct abbrev_info *abbrev; |
14442 | struct die_info *die; | |
14443 | struct dwarf2_cu *cu = reader->cu; | |
14444 | bfd *abfd = reader->abfd; | |
14445 | ||
b64f50a1 | 14446 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
14447 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
14448 | info_ptr += bytes_read; | |
14449 | if (!abbrev_number) | |
14450 | { | |
14451 | *diep = NULL; | |
14452 | *has_children = 0; | |
14453 | return info_ptr; | |
14454 | } | |
14455 | ||
433df2d4 | 14456 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 14457 | if (!abbrev) |
348e048f DE |
14458 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
14459 | abbrev_number, | |
14460 | bfd_get_filename (abfd)); | |
14461 | ||
3019eac3 | 14462 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
14463 | die->offset = offset; |
14464 | die->tag = abbrev->tag; | |
14465 | die->abbrev = abbrev_number; | |
14466 | ||
3019eac3 DE |
14467 | /* Make the result usable. |
14468 | The caller needs to update num_attrs after adding the extra | |
14469 | attributes. */ | |
93311388 DE |
14470 | die->num_attrs = abbrev->num_attrs; |
14471 | ||
14472 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
14473 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
14474 | info_ptr); | |
93311388 DE |
14475 | |
14476 | *diep = die; | |
14477 | *has_children = abbrev->has_children; | |
14478 | return info_ptr; | |
14479 | } | |
14480 | ||
3019eac3 DE |
14481 | /* Read a die and all its attributes. |
14482 | Set DIEP to point to a newly allocated die with its information, | |
14483 | except for its child, sibling, and parent fields. | |
14484 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
14485 | ||
d521ce57 | 14486 | static const gdb_byte * |
3019eac3 | 14487 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 14488 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
14489 | int *has_children) |
14490 | { | |
d521ce57 | 14491 | const gdb_byte *result; |
bf6af496 DE |
14492 | |
14493 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
14494 | ||
14495 | if (dwarf2_die_debug) | |
14496 | { | |
14497 | fprintf_unfiltered (gdb_stdlog, | |
14498 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 14499 | get_section_name (reader->die_section), |
bf6af496 DE |
14500 | (unsigned) (info_ptr - reader->die_section->buffer), |
14501 | bfd_get_filename (reader->abfd)); | |
14502 | dump_die (*diep, dwarf2_die_debug); | |
14503 | } | |
14504 | ||
14505 | return result; | |
3019eac3 | 14506 | } |
433df2d4 DE |
14507 | \f |
14508 | /* Abbreviation tables. | |
3019eac3 | 14509 | |
433df2d4 | 14510 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
14511 | stored in a separate .debug_abbrev section. Before we read any |
14512 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
14513 | in a hash table. */ |
14514 | ||
14515 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
14516 | ||
14517 | static struct abbrev_info * | |
14518 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
14519 | { | |
14520 | struct abbrev_info *abbrev; | |
14521 | ||
14522 | abbrev = (struct abbrev_info *) | |
14523 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
14524 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
14525 | return abbrev; | |
14526 | } | |
14527 | ||
14528 | /* Add an abbreviation to the table. */ | |
c906108c SS |
14529 | |
14530 | static void | |
433df2d4 DE |
14531 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
14532 | unsigned int abbrev_number, | |
14533 | struct abbrev_info *abbrev) | |
14534 | { | |
14535 | unsigned int hash_number; | |
14536 | ||
14537 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
14538 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
14539 | abbrev_table->abbrevs[hash_number] = abbrev; | |
14540 | } | |
dee91e82 | 14541 | |
433df2d4 DE |
14542 | /* Look up an abbrev in the table. |
14543 | Returns NULL if the abbrev is not found. */ | |
14544 | ||
14545 | static struct abbrev_info * | |
14546 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
14547 | unsigned int abbrev_number) | |
c906108c | 14548 | { |
433df2d4 DE |
14549 | unsigned int hash_number; |
14550 | struct abbrev_info *abbrev; | |
14551 | ||
14552 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
14553 | abbrev = abbrev_table->abbrevs[hash_number]; | |
14554 | ||
14555 | while (abbrev) | |
14556 | { | |
14557 | if (abbrev->number == abbrev_number) | |
14558 | return abbrev; | |
14559 | abbrev = abbrev->next; | |
14560 | } | |
14561 | return NULL; | |
14562 | } | |
14563 | ||
14564 | /* Read in an abbrev table. */ | |
14565 | ||
14566 | static struct abbrev_table * | |
14567 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
14568 | sect_offset offset) | |
14569 | { | |
14570 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 14571 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 14572 | struct abbrev_table *abbrev_table; |
d521ce57 | 14573 | const gdb_byte *abbrev_ptr; |
c906108c SS |
14574 | struct abbrev_info *cur_abbrev; |
14575 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 14576 | unsigned int abbrev_form; |
f3dd6933 DJ |
14577 | struct attr_abbrev *cur_attrs; |
14578 | unsigned int allocated_attrs; | |
c906108c | 14579 | |
433df2d4 | 14580 | abbrev_table = XMALLOC (struct abbrev_table); |
f4dc4d17 | 14581 | abbrev_table->offset = offset; |
433df2d4 DE |
14582 | obstack_init (&abbrev_table->abbrev_obstack); |
14583 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
14584 | (ABBREV_HASH_SIZE | |
14585 | * sizeof (struct abbrev_info *))); | |
14586 | memset (abbrev_table->abbrevs, 0, | |
14587 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 14588 | |
433df2d4 DE |
14589 | dwarf2_read_section (objfile, section); |
14590 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
14591 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
14592 | abbrev_ptr += bytes_read; | |
14593 | ||
f3dd6933 DJ |
14594 | allocated_attrs = ATTR_ALLOC_CHUNK; |
14595 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 14596 | |
0963b4bd | 14597 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
14598 | while (abbrev_number) |
14599 | { | |
433df2d4 | 14600 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
14601 | |
14602 | /* read in abbrev header */ | |
14603 | cur_abbrev->number = abbrev_number; | |
14604 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14605 | abbrev_ptr += bytes_read; | |
14606 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
14607 | abbrev_ptr += 1; | |
14608 | ||
14609 | /* now read in declarations */ | |
14610 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14611 | abbrev_ptr += bytes_read; | |
14612 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14613 | abbrev_ptr += bytes_read; | |
14614 | while (abbrev_name) | |
14615 | { | |
f3dd6933 | 14616 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 14617 | { |
f3dd6933 DJ |
14618 | allocated_attrs += ATTR_ALLOC_CHUNK; |
14619 | cur_attrs | |
14620 | = xrealloc (cur_attrs, (allocated_attrs | |
14621 | * sizeof (struct attr_abbrev))); | |
c906108c | 14622 | } |
ae038cb0 | 14623 | |
f3dd6933 DJ |
14624 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
14625 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
14626 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
14627 | abbrev_ptr += bytes_read; | |
14628 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14629 | abbrev_ptr += bytes_read; | |
14630 | } | |
14631 | ||
433df2d4 | 14632 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
14633 | (cur_abbrev->num_attrs |
14634 | * sizeof (struct attr_abbrev))); | |
14635 | memcpy (cur_abbrev->attrs, cur_attrs, | |
14636 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
14637 | ||
433df2d4 | 14638 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
14639 | |
14640 | /* Get next abbreviation. | |
14641 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
14642 | always properly terminated with an abbrev number of 0. |
14643 | Exit loop if we encounter an abbreviation which we have | |
14644 | already read (which means we are about to read the abbreviations | |
14645 | for the next compile unit) or if the end of the abbreviation | |
14646 | table is reached. */ | |
433df2d4 | 14647 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
14648 | break; |
14649 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14650 | abbrev_ptr += bytes_read; | |
433df2d4 | 14651 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
14652 | break; |
14653 | } | |
f3dd6933 DJ |
14654 | |
14655 | xfree (cur_attrs); | |
433df2d4 | 14656 | return abbrev_table; |
c906108c SS |
14657 | } |
14658 | ||
433df2d4 | 14659 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 14660 | |
c906108c | 14661 | static void |
433df2d4 | 14662 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 14663 | { |
433df2d4 DE |
14664 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
14665 | xfree (abbrev_table); | |
c906108c SS |
14666 | } |
14667 | ||
f4dc4d17 DE |
14668 | /* Same as abbrev_table_free but as a cleanup. |
14669 | We pass in a pointer to the pointer to the table so that we can | |
14670 | set the pointer to NULL when we're done. It also simplifies | |
14671 | build_type_unit_groups. */ | |
14672 | ||
14673 | static void | |
14674 | abbrev_table_free_cleanup (void *table_ptr) | |
14675 | { | |
14676 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
14677 | ||
14678 | if (*abbrev_table_ptr != NULL) | |
14679 | abbrev_table_free (*abbrev_table_ptr); | |
14680 | *abbrev_table_ptr = NULL; | |
14681 | } | |
14682 | ||
433df2d4 DE |
14683 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
14684 | ||
14685 | static void | |
14686 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
14687 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 14688 | { |
433df2d4 DE |
14689 | cu->abbrev_table = |
14690 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
14691 | } | |
c906108c | 14692 | |
433df2d4 | 14693 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 14694 | |
433df2d4 DE |
14695 | static void |
14696 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
14697 | { | |
14698 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 14699 | |
a2ce51a0 DE |
14700 | if (cu->abbrev_table != NULL) |
14701 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
14702 | /* Set this to NULL so that we SEGV if we try to read it later, |
14703 | and also because free_comp_unit verifies this is NULL. */ | |
14704 | cu->abbrev_table = NULL; | |
14705 | } | |
14706 | \f | |
72bf9492 DJ |
14707 | /* Returns nonzero if TAG represents a type that we might generate a partial |
14708 | symbol for. */ | |
14709 | ||
14710 | static int | |
14711 | is_type_tag_for_partial (int tag) | |
14712 | { | |
14713 | switch (tag) | |
14714 | { | |
14715 | #if 0 | |
14716 | /* Some types that would be reasonable to generate partial symbols for, | |
14717 | that we don't at present. */ | |
14718 | case DW_TAG_array_type: | |
14719 | case DW_TAG_file_type: | |
14720 | case DW_TAG_ptr_to_member_type: | |
14721 | case DW_TAG_set_type: | |
14722 | case DW_TAG_string_type: | |
14723 | case DW_TAG_subroutine_type: | |
14724 | #endif | |
14725 | case DW_TAG_base_type: | |
14726 | case DW_TAG_class_type: | |
680b30c7 | 14727 | case DW_TAG_interface_type: |
72bf9492 DJ |
14728 | case DW_TAG_enumeration_type: |
14729 | case DW_TAG_structure_type: | |
14730 | case DW_TAG_subrange_type: | |
14731 | case DW_TAG_typedef: | |
14732 | case DW_TAG_union_type: | |
14733 | return 1; | |
14734 | default: | |
14735 | return 0; | |
14736 | } | |
14737 | } | |
14738 | ||
14739 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
14740 | ||
14741 | static struct partial_die_info * | |
dee91e82 | 14742 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 14743 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 14744 | { |
dee91e82 | 14745 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 14746 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
14747 | struct partial_die_info *part_die; |
14748 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
14749 | struct abbrev_info *abbrev; | |
14750 | unsigned int bytes_read; | |
5afb4e99 | 14751 | unsigned int load_all = 0; |
72bf9492 DJ |
14752 | int nesting_level = 1; |
14753 | ||
14754 | parent_die = NULL; | |
14755 | last_die = NULL; | |
14756 | ||
7adf1e79 DE |
14757 | gdb_assert (cu->per_cu != NULL); |
14758 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
14759 | load_all = 1; |
14760 | ||
72bf9492 DJ |
14761 | cu->partial_dies |
14762 | = htab_create_alloc_ex (cu->header.length / 12, | |
14763 | partial_die_hash, | |
14764 | partial_die_eq, | |
14765 | NULL, | |
14766 | &cu->comp_unit_obstack, | |
14767 | hashtab_obstack_allocate, | |
14768 | dummy_obstack_deallocate); | |
14769 | ||
14770 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
14771 | sizeof (struct partial_die_info)); | |
14772 | ||
14773 | while (1) | |
14774 | { | |
14775 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
14776 | ||
14777 | /* A NULL abbrev means the end of a series of children. */ | |
14778 | if (abbrev == NULL) | |
14779 | { | |
14780 | if (--nesting_level == 0) | |
14781 | { | |
14782 | /* PART_DIE was probably the last thing allocated on the | |
14783 | comp_unit_obstack, so we could call obstack_free | |
14784 | here. We don't do that because the waste is small, | |
14785 | and will be cleaned up when we're done with this | |
14786 | compilation unit. This way, we're also more robust | |
14787 | against other users of the comp_unit_obstack. */ | |
14788 | return first_die; | |
14789 | } | |
14790 | info_ptr += bytes_read; | |
14791 | last_die = parent_die; | |
14792 | parent_die = parent_die->die_parent; | |
14793 | continue; | |
14794 | } | |
14795 | ||
98bfdba5 PA |
14796 | /* Check for template arguments. We never save these; if |
14797 | they're seen, we just mark the parent, and go on our way. */ | |
14798 | if (parent_die != NULL | |
14799 | && cu->language == language_cplus | |
14800 | && (abbrev->tag == DW_TAG_template_type_param | |
14801 | || abbrev->tag == DW_TAG_template_value_param)) | |
14802 | { | |
14803 | parent_die->has_template_arguments = 1; | |
14804 | ||
14805 | if (!load_all) | |
14806 | { | |
14807 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 14808 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
14809 | continue; |
14810 | } | |
14811 | } | |
14812 | ||
0d99eb77 | 14813 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
14814 | Skip their other children. */ |
14815 | if (!load_all | |
14816 | && cu->language == language_cplus | |
14817 | && parent_die != NULL | |
14818 | && parent_die->tag == DW_TAG_subprogram) | |
14819 | { | |
dee91e82 | 14820 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
14821 | continue; |
14822 | } | |
14823 | ||
5afb4e99 DJ |
14824 | /* Check whether this DIE is interesting enough to save. Normally |
14825 | we would not be interested in members here, but there may be | |
14826 | later variables referencing them via DW_AT_specification (for | |
14827 | static members). */ | |
14828 | if (!load_all | |
14829 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 14830 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
14831 | && abbrev->tag != DW_TAG_enumerator |
14832 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 14833 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 14834 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 14835 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 14836 | && abbrev->tag != DW_TAG_module |
95554aad TT |
14837 | && abbrev->tag != DW_TAG_member |
14838 | && abbrev->tag != DW_TAG_imported_unit) | |
72bf9492 DJ |
14839 | { |
14840 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 14841 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
14842 | continue; |
14843 | } | |
14844 | ||
dee91e82 DE |
14845 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
14846 | info_ptr); | |
72bf9492 DJ |
14847 | |
14848 | /* This two-pass algorithm for processing partial symbols has a | |
14849 | high cost in cache pressure. Thus, handle some simple cases | |
14850 | here which cover the majority of C partial symbols. DIEs | |
14851 | which neither have specification tags in them, nor could have | |
14852 | specification tags elsewhere pointing at them, can simply be | |
14853 | processed and discarded. | |
14854 | ||
14855 | This segment is also optional; scan_partial_symbols and | |
14856 | add_partial_symbol will handle these DIEs if we chain | |
14857 | them in normally. When compilers which do not emit large | |
14858 | quantities of duplicate debug information are more common, | |
14859 | this code can probably be removed. */ | |
14860 | ||
14861 | /* Any complete simple types at the top level (pretty much all | |
14862 | of them, for a language without namespaces), can be processed | |
14863 | directly. */ | |
14864 | if (parent_die == NULL | |
14865 | && part_die->has_specification == 0 | |
14866 | && part_die->is_declaration == 0 | |
d8228535 | 14867 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
14868 | || part_die->tag == DW_TAG_base_type |
14869 | || part_die->tag == DW_TAG_subrange_type)) | |
14870 | { | |
14871 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 14872 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 14873 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
14874 | &objfile->static_psymbols, |
14875 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 14876 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
14877 | continue; |
14878 | } | |
14879 | ||
d8228535 JK |
14880 | /* The exception for DW_TAG_typedef with has_children above is |
14881 | a workaround of GCC PR debug/47510. In the case of this complaint | |
14882 | type_name_no_tag_or_error will error on such types later. | |
14883 | ||
14884 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
14885 | it could not find the child DIEs referenced later, this is checked | |
14886 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
14887 | ||
14888 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
14889 | complaint (&symfile_complaints, | |
14890 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
14891 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14892 | part_die->offset.sect_off, objfile_name (objfile)); |
d8228535 | 14893 | |
72bf9492 DJ |
14894 | /* If we're at the second level, and we're an enumerator, and |
14895 | our parent has no specification (meaning possibly lives in a | |
14896 | namespace elsewhere), then we can add the partial symbol now | |
14897 | instead of queueing it. */ | |
14898 | if (part_die->tag == DW_TAG_enumerator | |
14899 | && parent_die != NULL | |
14900 | && parent_die->die_parent == NULL | |
14901 | && parent_die->tag == DW_TAG_enumeration_type | |
14902 | && parent_die->has_specification == 0) | |
14903 | { | |
14904 | if (part_die->name == NULL) | |
3e43a32a MS |
14905 | complaint (&symfile_complaints, |
14906 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 14907 | else if (building_psymtab) |
04a679b8 | 14908 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 14909 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
14910 | (cu->language == language_cplus |
14911 | || cu->language == language_java) | |
bb5ed363 DE |
14912 | ? &objfile->global_psymbols |
14913 | : &objfile->static_psymbols, | |
14914 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 14915 | |
dee91e82 | 14916 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
14917 | continue; |
14918 | } | |
14919 | ||
14920 | /* We'll save this DIE so link it in. */ | |
14921 | part_die->die_parent = parent_die; | |
14922 | part_die->die_sibling = NULL; | |
14923 | part_die->die_child = NULL; | |
14924 | ||
14925 | if (last_die && last_die == parent_die) | |
14926 | last_die->die_child = part_die; | |
14927 | else if (last_die) | |
14928 | last_die->die_sibling = part_die; | |
14929 | ||
14930 | last_die = part_die; | |
14931 | ||
14932 | if (first_die == NULL) | |
14933 | first_die = part_die; | |
14934 | ||
14935 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
14936 | find interesting need to be in the hash table, because we | |
14937 | also have the parent/sibling/child chains; only those that we | |
14938 | might refer to by offset later during partial symbol reading. | |
14939 | ||
14940 | For now this means things that might have be the target of a | |
14941 | DW_AT_specification, DW_AT_abstract_origin, or | |
14942 | DW_AT_extension. DW_AT_extension will refer only to | |
14943 | namespaces; DW_AT_abstract_origin refers to functions (and | |
14944 | many things under the function DIE, but we do not recurse | |
14945 | into function DIEs during partial symbol reading) and | |
14946 | possibly variables as well; DW_AT_specification refers to | |
14947 | declarations. Declarations ought to have the DW_AT_declaration | |
14948 | flag. It happens that GCC forgets to put it in sometimes, but | |
14949 | only for functions, not for types. | |
14950 | ||
14951 | Adding more things than necessary to the hash table is harmless | |
14952 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
14953 | wasted time in find_partial_die, when we reread the compilation |
14954 | unit with load_all_dies set. */ | |
72bf9492 | 14955 | |
5afb4e99 | 14956 | if (load_all |
72929c62 | 14957 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 14958 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
14959 | || abbrev->tag == DW_TAG_variable |
14960 | || abbrev->tag == DW_TAG_namespace | |
14961 | || part_die->is_declaration) | |
14962 | { | |
14963 | void **slot; | |
14964 | ||
14965 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 14966 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
14967 | *slot = part_die; |
14968 | } | |
14969 | ||
14970 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
14971 | sizeof (struct partial_die_info)); | |
14972 | ||
14973 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 14974 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
14975 | languages we have to, so that we can get at method physnames |
14976 | to infer fully qualified class names, for DW_AT_specification, | |
14977 | and for C++ template arguments. For C++, we also look one level | |
14978 | inside functions to find template arguments (if the name of the | |
14979 | function does not already contain the template arguments). | |
bc30ff58 JB |
14980 | |
14981 | For Ada, we need to scan the children of subprograms and lexical | |
14982 | blocks as well because Ada allows the definition of nested | |
14983 | entities that could be interesting for the debugger, such as | |
14984 | nested subprograms for instance. */ | |
72bf9492 | 14985 | if (last_die->has_children |
5afb4e99 DJ |
14986 | && (load_all |
14987 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 14988 | || last_die->tag == DW_TAG_module |
72bf9492 | 14989 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
14990 | || (cu->language == language_cplus |
14991 | && last_die->tag == DW_TAG_subprogram | |
14992 | && (last_die->name == NULL | |
14993 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
14994 | || (cu->language != language_c |
14995 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 14996 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 14997 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
14998 | || last_die->tag == DW_TAG_union_type)) |
14999 | || (cu->language == language_ada | |
15000 | && (last_die->tag == DW_TAG_subprogram | |
15001 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
15002 | { |
15003 | nesting_level++; | |
15004 | parent_die = last_die; | |
15005 | continue; | |
15006 | } | |
15007 | ||
15008 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15009 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
15010 | |
15011 | /* Back to the top, do it again. */ | |
15012 | } | |
15013 | } | |
15014 | ||
c906108c SS |
15015 | /* Read a minimal amount of information into the minimal die structure. */ |
15016 | ||
d521ce57 | 15017 | static const gdb_byte * |
dee91e82 DE |
15018 | read_partial_die (const struct die_reader_specs *reader, |
15019 | struct partial_die_info *part_die, | |
15020 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 15021 | const gdb_byte *info_ptr) |
c906108c | 15022 | { |
dee91e82 | 15023 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15024 | struct objfile *objfile = cu->objfile; |
d521ce57 | 15025 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 15026 | unsigned int i; |
c906108c | 15027 | struct attribute attr; |
c5aa993b | 15028 | int has_low_pc_attr = 0; |
c906108c | 15029 | int has_high_pc_attr = 0; |
91da1414 | 15030 | int high_pc_relative = 0; |
c906108c | 15031 | |
72bf9492 | 15032 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 15033 | |
b64f50a1 | 15034 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
15035 | |
15036 | info_ptr += abbrev_len; | |
15037 | ||
15038 | if (abbrev == NULL) | |
15039 | return info_ptr; | |
15040 | ||
c906108c SS |
15041 | part_die->tag = abbrev->tag; |
15042 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
15043 | |
15044 | for (i = 0; i < abbrev->num_attrs; ++i) | |
15045 | { | |
dee91e82 | 15046 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
15047 | |
15048 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 15049 | partial symbol table. */ |
c906108c SS |
15050 | switch (attr.name) |
15051 | { | |
15052 | case DW_AT_name: | |
71c25dea TT |
15053 | switch (part_die->tag) |
15054 | { | |
15055 | case DW_TAG_compile_unit: | |
95554aad | 15056 | case DW_TAG_partial_unit: |
348e048f | 15057 | case DW_TAG_type_unit: |
71c25dea TT |
15058 | /* Compilation units have a DW_AT_name that is a filename, not |
15059 | a source language identifier. */ | |
15060 | case DW_TAG_enumeration_type: | |
15061 | case DW_TAG_enumerator: | |
15062 | /* These tags always have simple identifiers already; no need | |
15063 | to canonicalize them. */ | |
15064 | part_die->name = DW_STRING (&attr); | |
15065 | break; | |
15066 | default: | |
15067 | part_die->name | |
15068 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 15069 | &objfile->objfile_obstack); |
71c25dea TT |
15070 | break; |
15071 | } | |
c906108c | 15072 | break; |
31ef98ae | 15073 | case DW_AT_linkage_name: |
c906108c | 15074 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
15075 | /* Note that both forms of linkage name might appear. We |
15076 | assume they will be the same, and we only store the last | |
15077 | one we see. */ | |
94af9270 KS |
15078 | if (cu->language == language_ada) |
15079 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 15080 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
15081 | break; |
15082 | case DW_AT_low_pc: | |
15083 | has_low_pc_attr = 1; | |
15084 | part_die->lowpc = DW_ADDR (&attr); | |
15085 | break; | |
15086 | case DW_AT_high_pc: | |
15087 | has_high_pc_attr = 1; | |
3019eac3 DE |
15088 | if (attr.form == DW_FORM_addr |
15089 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
15090 | part_die->highpc = DW_ADDR (&attr); |
15091 | else | |
15092 | { | |
15093 | high_pc_relative = 1; | |
15094 | part_die->highpc = DW_UNSND (&attr); | |
15095 | } | |
c906108c SS |
15096 | break; |
15097 | case DW_AT_location: | |
0963b4bd | 15098 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
15099 | if (attr_form_is_block (&attr)) |
15100 | { | |
95554aad | 15101 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 15102 | } |
3690dd37 | 15103 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 15104 | { |
4d3c2250 | 15105 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15106 | } |
15107 | else | |
15108 | { | |
4d3c2250 KB |
15109 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
15110 | "partial symbol information"); | |
8e19ed76 | 15111 | } |
c906108c | 15112 | break; |
c906108c SS |
15113 | case DW_AT_external: |
15114 | part_die->is_external = DW_UNSND (&attr); | |
15115 | break; | |
15116 | case DW_AT_declaration: | |
15117 | part_die->is_declaration = DW_UNSND (&attr); | |
15118 | break; | |
15119 | case DW_AT_type: | |
15120 | part_die->has_type = 1; | |
15121 | break; | |
15122 | case DW_AT_abstract_origin: | |
15123 | case DW_AT_specification: | |
72bf9492 DJ |
15124 | case DW_AT_extension: |
15125 | part_die->has_specification = 1; | |
c764a876 | 15126 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
15127 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
15128 | || cu->per_cu->is_dwz); | |
c906108c SS |
15129 | break; |
15130 | case DW_AT_sibling: | |
15131 | /* Ignore absolute siblings, they might point outside of | |
15132 | the current compile unit. */ | |
15133 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
15134 | complaint (&symfile_complaints, |
15135 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 15136 | else |
b64f50a1 | 15137 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 15138 | break; |
fa4028e9 JB |
15139 | case DW_AT_byte_size: |
15140 | part_die->has_byte_size = 1; | |
15141 | break; | |
68511cec CES |
15142 | case DW_AT_calling_convention: |
15143 | /* DWARF doesn't provide a way to identify a program's source-level | |
15144 | entry point. DW_AT_calling_convention attributes are only meant | |
15145 | to describe functions' calling conventions. | |
15146 | ||
15147 | However, because it's a necessary piece of information in | |
15148 | Fortran, and because DW_CC_program is the only piece of debugging | |
15149 | information whose definition refers to a 'main program' at all, | |
15150 | several compilers have begun marking Fortran main programs with | |
15151 | DW_CC_program --- even when those functions use the standard | |
15152 | calling conventions. | |
15153 | ||
15154 | So until DWARF specifies a way to provide this information and | |
15155 | compilers pick up the new representation, we'll support this | |
15156 | practice. */ | |
15157 | if (DW_UNSND (&attr) == DW_CC_program | |
15158 | && cu->language == language_fortran) | |
01f8c46d JK |
15159 | { |
15160 | set_main_name (part_die->name); | |
15161 | ||
15162 | /* As this DIE has a static linkage the name would be difficult | |
15163 | to look up later. */ | |
15164 | language_of_main = language_fortran; | |
15165 | } | |
68511cec | 15166 | break; |
481860b3 GB |
15167 | case DW_AT_inline: |
15168 | if (DW_UNSND (&attr) == DW_INL_inlined | |
15169 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
15170 | part_die->may_be_inlined = 1; | |
15171 | break; | |
95554aad TT |
15172 | |
15173 | case DW_AT_import: | |
15174 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
15175 | { |
15176 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
15177 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
15178 | || cu->per_cu->is_dwz); | |
15179 | } | |
95554aad TT |
15180 | break; |
15181 | ||
c906108c SS |
15182 | default: |
15183 | break; | |
15184 | } | |
15185 | } | |
15186 | ||
91da1414 MW |
15187 | if (high_pc_relative) |
15188 | part_die->highpc += part_die->lowpc; | |
15189 | ||
9373cf26 JK |
15190 | if (has_low_pc_attr && has_high_pc_attr) |
15191 | { | |
15192 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
15193 | eliminate duplicate copies of functions and vtables and such. | |
15194 | The linker will arbitrarily choose one and discard the others. | |
15195 | The AT_*_pc values for such functions refer to local labels in | |
15196 | these sections. If the section from that file was discarded, the | |
15197 | labels are not in the output, so the relocs get a value of 0. | |
15198 | If this is a discarded function, mark the pc bounds as invalid, | |
15199 | so that GDB will ignore it. */ | |
15200 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
15201 | { | |
bb5ed363 | 15202 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15203 | |
15204 | complaint (&symfile_complaints, | |
15205 | _("DW_AT_low_pc %s is zero " | |
15206 | "for DIE at 0x%x [in module %s]"), | |
15207 | paddress (gdbarch, part_die->lowpc), | |
4262abfb | 15208 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15209 | } |
15210 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
15211 | else if (part_die->lowpc >= part_die->highpc) | |
15212 | { | |
bb5ed363 | 15213 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15214 | |
15215 | complaint (&symfile_complaints, | |
15216 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
15217 | "for DIE at 0x%x [in module %s]"), | |
15218 | paddress (gdbarch, part_die->lowpc), | |
15219 | paddress (gdbarch, part_die->highpc), | |
4262abfb | 15220 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15221 | } |
15222 | else | |
15223 | part_die->has_pc_info = 1; | |
15224 | } | |
85cbf3d3 | 15225 | |
c906108c SS |
15226 | return info_ptr; |
15227 | } | |
15228 | ||
72bf9492 DJ |
15229 | /* Find a cached partial DIE at OFFSET in CU. */ |
15230 | ||
15231 | static struct partial_die_info * | |
b64f50a1 | 15232 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
15233 | { |
15234 | struct partial_die_info *lookup_die = NULL; | |
15235 | struct partial_die_info part_die; | |
15236 | ||
15237 | part_die.offset = offset; | |
b64f50a1 JK |
15238 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
15239 | offset.sect_off); | |
72bf9492 | 15240 | |
72bf9492 DJ |
15241 | return lookup_die; |
15242 | } | |
15243 | ||
348e048f DE |
15244 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
15245 | except in the case of .debug_types DIEs which do not reference | |
15246 | outside their CU (they do however referencing other types via | |
55f1336d | 15247 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
15248 | |
15249 | static struct partial_die_info * | |
36586728 | 15250 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 15251 | { |
bb5ed363 | 15252 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
15253 | struct dwarf2_per_cu_data *per_cu = NULL; |
15254 | struct partial_die_info *pd = NULL; | |
72bf9492 | 15255 | |
36586728 TT |
15256 | if (offset_in_dwz == cu->per_cu->is_dwz |
15257 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
15258 | { |
15259 | pd = find_partial_die_in_comp_unit (offset, cu); | |
15260 | if (pd != NULL) | |
15261 | return pd; | |
0d99eb77 DE |
15262 | /* We missed recording what we needed. |
15263 | Load all dies and try again. */ | |
15264 | per_cu = cu->per_cu; | |
5afb4e99 | 15265 | } |
0d99eb77 DE |
15266 | else |
15267 | { | |
15268 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 15269 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
15270 | { |
15271 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
15272 | " external reference to offset 0x%lx [in module %s].\n"), | |
15273 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
15274 | bfd_get_filename (objfile->obfd)); | |
15275 | } | |
36586728 TT |
15276 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
15277 | objfile); | |
72bf9492 | 15278 | |
0d99eb77 DE |
15279 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
15280 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 15281 | |
0d99eb77 DE |
15282 | per_cu->cu->last_used = 0; |
15283 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
15284 | } | |
5afb4e99 | 15285 | |
dee91e82 DE |
15286 | /* If we didn't find it, and not all dies have been loaded, |
15287 | load them all and try again. */ | |
15288 | ||
5afb4e99 DJ |
15289 | if (pd == NULL && per_cu->load_all_dies == 0) |
15290 | { | |
5afb4e99 | 15291 | per_cu->load_all_dies = 1; |
fd820528 DE |
15292 | |
15293 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
15294 | THIS_CU->cu may already be in use. So we can't just free it and | |
15295 | replace its DIEs with the ones we read in. Instead, we leave those | |
15296 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
15297 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
15298 | set. */ | |
dee91e82 | 15299 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
15300 | |
15301 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
15302 | } | |
15303 | ||
15304 | if (pd == NULL) | |
15305 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
15306 | _("could not find partial DIE 0x%x " |
15307 | "in cache [from module %s]\n"), | |
b64f50a1 | 15308 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 15309 | return pd; |
72bf9492 DJ |
15310 | } |
15311 | ||
abc72ce4 DE |
15312 | /* See if we can figure out if the class lives in a namespace. We do |
15313 | this by looking for a member function; its demangled name will | |
15314 | contain namespace info, if there is any. */ | |
15315 | ||
15316 | static void | |
15317 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
15318 | struct dwarf2_cu *cu) | |
15319 | { | |
15320 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
15321 | what template types look like, because the demangler | |
15322 | frequently doesn't give the same name as the debug info. We | |
15323 | could fix this by only using the demangled name to get the | |
15324 | prefix (but see comment in read_structure_type). */ | |
15325 | ||
15326 | struct partial_die_info *real_pdi; | |
15327 | struct partial_die_info *child_pdi; | |
15328 | ||
15329 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
15330 | we should not do this. We'll prepend the parent's fully qualified | |
15331 | name when we create the partial symbol. */ | |
15332 | ||
15333 | real_pdi = struct_pdi; | |
15334 | while (real_pdi->has_specification) | |
36586728 TT |
15335 | real_pdi = find_partial_die (real_pdi->spec_offset, |
15336 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
15337 | |
15338 | if (real_pdi->die_parent != NULL) | |
15339 | return; | |
15340 | ||
15341 | for (child_pdi = struct_pdi->die_child; | |
15342 | child_pdi != NULL; | |
15343 | child_pdi = child_pdi->die_sibling) | |
15344 | { | |
15345 | if (child_pdi->tag == DW_TAG_subprogram | |
15346 | && child_pdi->linkage_name != NULL) | |
15347 | { | |
15348 | char *actual_class_name | |
15349 | = language_class_name_from_physname (cu->language_defn, | |
15350 | child_pdi->linkage_name); | |
15351 | if (actual_class_name != NULL) | |
15352 | { | |
15353 | struct_pdi->name | |
10f0c4bb TT |
15354 | = obstack_copy0 (&cu->objfile->objfile_obstack, |
15355 | actual_class_name, | |
15356 | strlen (actual_class_name)); | |
abc72ce4 DE |
15357 | xfree (actual_class_name); |
15358 | } | |
15359 | break; | |
15360 | } | |
15361 | } | |
15362 | } | |
15363 | ||
72bf9492 DJ |
15364 | /* Adjust PART_DIE before generating a symbol for it. This function |
15365 | may set the is_external flag or change the DIE's name. */ | |
15366 | ||
15367 | static void | |
15368 | fixup_partial_die (struct partial_die_info *part_die, | |
15369 | struct dwarf2_cu *cu) | |
15370 | { | |
abc72ce4 DE |
15371 | /* Once we've fixed up a die, there's no point in doing so again. |
15372 | This also avoids a memory leak if we were to call | |
15373 | guess_partial_die_structure_name multiple times. */ | |
15374 | if (part_die->fixup_called) | |
15375 | return; | |
15376 | ||
72bf9492 DJ |
15377 | /* If we found a reference attribute and the DIE has no name, try |
15378 | to find a name in the referred to DIE. */ | |
15379 | ||
15380 | if (part_die->name == NULL && part_die->has_specification) | |
15381 | { | |
15382 | struct partial_die_info *spec_die; | |
72bf9492 | 15383 | |
36586728 TT |
15384 | spec_die = find_partial_die (part_die->spec_offset, |
15385 | part_die->spec_is_dwz, cu); | |
72bf9492 | 15386 | |
10b3939b | 15387 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
15388 | |
15389 | if (spec_die->name) | |
15390 | { | |
15391 | part_die->name = spec_die->name; | |
15392 | ||
15393 | /* Copy DW_AT_external attribute if it is set. */ | |
15394 | if (spec_die->is_external) | |
15395 | part_die->is_external = spec_die->is_external; | |
15396 | } | |
15397 | } | |
15398 | ||
15399 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
15400 | |
15401 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 15402 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 15403 | |
abc72ce4 DE |
15404 | /* If there is no parent die to provide a namespace, and there are |
15405 | children, see if we can determine the namespace from their linkage | |
122d1940 | 15406 | name. */ |
abc72ce4 | 15407 | if (cu->language == language_cplus |
8b70b953 | 15408 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
15409 | && part_die->die_parent == NULL |
15410 | && part_die->has_children | |
15411 | && (part_die->tag == DW_TAG_class_type | |
15412 | || part_die->tag == DW_TAG_structure_type | |
15413 | || part_die->tag == DW_TAG_union_type)) | |
15414 | guess_partial_die_structure_name (part_die, cu); | |
15415 | ||
53832f31 TT |
15416 | /* GCC might emit a nameless struct or union that has a linkage |
15417 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
15418 | if (part_die->name == NULL | |
96408a79 SA |
15419 | && (part_die->tag == DW_TAG_class_type |
15420 | || part_die->tag == DW_TAG_interface_type | |
15421 | || part_die->tag == DW_TAG_structure_type | |
15422 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
15423 | && part_die->linkage_name != NULL) |
15424 | { | |
15425 | char *demangled; | |
15426 | ||
8de20a37 | 15427 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
15428 | if (demangled) |
15429 | { | |
96408a79 SA |
15430 | const char *base; |
15431 | ||
15432 | /* Strip any leading namespaces/classes, keep only the base name. | |
15433 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
15434 | base = strrchr (demangled, ':'); | |
15435 | if (base && base > demangled && base[-1] == ':') | |
15436 | base++; | |
15437 | else | |
15438 | base = demangled; | |
15439 | ||
10f0c4bb TT |
15440 | part_die->name = obstack_copy0 (&cu->objfile->objfile_obstack, |
15441 | base, strlen (base)); | |
53832f31 TT |
15442 | xfree (demangled); |
15443 | } | |
15444 | } | |
15445 | ||
abc72ce4 | 15446 | part_die->fixup_called = 1; |
72bf9492 DJ |
15447 | } |
15448 | ||
a8329558 | 15449 | /* Read an attribute value described by an attribute form. */ |
c906108c | 15450 | |
d521ce57 | 15451 | static const gdb_byte * |
dee91e82 DE |
15452 | read_attribute_value (const struct die_reader_specs *reader, |
15453 | struct attribute *attr, unsigned form, | |
d521ce57 | 15454 | const gdb_byte *info_ptr) |
c906108c | 15455 | { |
dee91e82 DE |
15456 | struct dwarf2_cu *cu = reader->cu; |
15457 | bfd *abfd = reader->abfd; | |
e7c27a73 | 15458 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
15459 | unsigned int bytes_read; |
15460 | struct dwarf_block *blk; | |
15461 | ||
a8329558 KW |
15462 | attr->form = form; |
15463 | switch (form) | |
c906108c | 15464 | { |
c906108c | 15465 | case DW_FORM_ref_addr: |
ae411497 | 15466 | if (cu->header.version == 2) |
4568ecf9 | 15467 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 15468 | else |
4568ecf9 DE |
15469 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
15470 | &cu->header, &bytes_read); | |
ae411497 TT |
15471 | info_ptr += bytes_read; |
15472 | break; | |
36586728 TT |
15473 | case DW_FORM_GNU_ref_alt: |
15474 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
15475 | info_ptr += bytes_read; | |
15476 | break; | |
ae411497 | 15477 | case DW_FORM_addr: |
e7c27a73 | 15478 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 15479 | info_ptr += bytes_read; |
c906108c SS |
15480 | break; |
15481 | case DW_FORM_block2: | |
7b5a2f43 | 15482 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15483 | blk->size = read_2_bytes (abfd, info_ptr); |
15484 | info_ptr += 2; | |
15485 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15486 | info_ptr += blk->size; | |
15487 | DW_BLOCK (attr) = blk; | |
15488 | break; | |
15489 | case DW_FORM_block4: | |
7b5a2f43 | 15490 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15491 | blk->size = read_4_bytes (abfd, info_ptr); |
15492 | info_ptr += 4; | |
15493 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15494 | info_ptr += blk->size; | |
15495 | DW_BLOCK (attr) = blk; | |
15496 | break; | |
15497 | case DW_FORM_data2: | |
15498 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
15499 | info_ptr += 2; | |
15500 | break; | |
15501 | case DW_FORM_data4: | |
15502 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
15503 | info_ptr += 4; | |
15504 | break; | |
15505 | case DW_FORM_data8: | |
15506 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
15507 | info_ptr += 8; | |
15508 | break; | |
2dc7f7b3 TT |
15509 | case DW_FORM_sec_offset: |
15510 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
15511 | info_ptr += bytes_read; | |
15512 | break; | |
c906108c | 15513 | case DW_FORM_string: |
9b1c24c8 | 15514 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 15515 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
15516 | info_ptr += bytes_read; |
15517 | break; | |
4bdf3d34 | 15518 | case DW_FORM_strp: |
36586728 TT |
15519 | if (!cu->per_cu->is_dwz) |
15520 | { | |
15521 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
15522 | &bytes_read); | |
15523 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15524 | info_ptr += bytes_read; | |
15525 | break; | |
15526 | } | |
15527 | /* FALLTHROUGH */ | |
15528 | case DW_FORM_GNU_strp_alt: | |
15529 | { | |
15530 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
15531 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
15532 | &bytes_read); | |
15533 | ||
15534 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
15535 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15536 | info_ptr += bytes_read; | |
15537 | } | |
4bdf3d34 | 15538 | break; |
2dc7f7b3 | 15539 | case DW_FORM_exprloc: |
c906108c | 15540 | case DW_FORM_block: |
7b5a2f43 | 15541 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15542 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15543 | info_ptr += bytes_read; | |
15544 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15545 | info_ptr += blk->size; | |
15546 | DW_BLOCK (attr) = blk; | |
15547 | break; | |
15548 | case DW_FORM_block1: | |
7b5a2f43 | 15549 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15550 | blk->size = read_1_byte (abfd, info_ptr); |
15551 | info_ptr += 1; | |
15552 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15553 | info_ptr += blk->size; | |
15554 | DW_BLOCK (attr) = blk; | |
15555 | break; | |
15556 | case DW_FORM_data1: | |
15557 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
15558 | info_ptr += 1; | |
15559 | break; | |
15560 | case DW_FORM_flag: | |
15561 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
15562 | info_ptr += 1; | |
15563 | break; | |
2dc7f7b3 TT |
15564 | case DW_FORM_flag_present: |
15565 | DW_UNSND (attr) = 1; | |
15566 | break; | |
c906108c SS |
15567 | case DW_FORM_sdata: |
15568 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
15569 | info_ptr += bytes_read; | |
15570 | break; | |
15571 | case DW_FORM_udata: | |
15572 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
15573 | info_ptr += bytes_read; | |
15574 | break; | |
15575 | case DW_FORM_ref1: | |
4568ecf9 DE |
15576 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15577 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
15578 | info_ptr += 1; |
15579 | break; | |
15580 | case DW_FORM_ref2: | |
4568ecf9 DE |
15581 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15582 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
15583 | info_ptr += 2; |
15584 | break; | |
15585 | case DW_FORM_ref4: | |
4568ecf9 DE |
15586 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15587 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
15588 | info_ptr += 4; |
15589 | break; | |
613e1657 | 15590 | case DW_FORM_ref8: |
4568ecf9 DE |
15591 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15592 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
15593 | info_ptr += 8; |
15594 | break; | |
55f1336d | 15595 | case DW_FORM_ref_sig8: |
ac9ec31b | 15596 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
15597 | info_ptr += 8; |
15598 | break; | |
c906108c | 15599 | case DW_FORM_ref_udata: |
4568ecf9 DE |
15600 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15601 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
15602 | info_ptr += bytes_read; |
15603 | break; | |
c906108c | 15604 | case DW_FORM_indirect: |
a8329558 KW |
15605 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15606 | info_ptr += bytes_read; | |
dee91e82 | 15607 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 15608 | break; |
3019eac3 DE |
15609 | case DW_FORM_GNU_addr_index: |
15610 | if (reader->dwo_file == NULL) | |
15611 | { | |
15612 | /* For now flag a hard error. | |
15613 | Later we can turn this into a complaint. */ | |
15614 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
15615 | dwarf_form_name (form), | |
15616 | bfd_get_filename (abfd)); | |
15617 | } | |
15618 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
15619 | info_ptr += bytes_read; | |
15620 | break; | |
15621 | case DW_FORM_GNU_str_index: | |
15622 | if (reader->dwo_file == NULL) | |
15623 | { | |
15624 | /* For now flag a hard error. | |
15625 | Later we can turn this into a complaint if warranted. */ | |
15626 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
15627 | dwarf_form_name (form), | |
15628 | bfd_get_filename (abfd)); | |
15629 | } | |
15630 | { | |
15631 | ULONGEST str_index = | |
15632 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
15633 | ||
15634 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
15635 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15636 | info_ptr += bytes_read; | |
15637 | } | |
15638 | break; | |
c906108c | 15639 | default: |
8a3fe4f8 | 15640 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
15641 | dwarf_form_name (form), |
15642 | bfd_get_filename (abfd)); | |
c906108c | 15643 | } |
28e94949 | 15644 | |
36586728 | 15645 | /* Super hack. */ |
7771576e | 15646 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
15647 | attr->form = DW_FORM_GNU_ref_alt; |
15648 | ||
28e94949 JB |
15649 | /* We have seen instances where the compiler tried to emit a byte |
15650 | size attribute of -1 which ended up being encoded as an unsigned | |
15651 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
15652 | an object of this size seems pretty unlikely so we can relatively | |
15653 | safely treat these cases as if the size attribute was invalid and | |
15654 | treat them as zero by default. */ | |
15655 | if (attr->name == DW_AT_byte_size | |
15656 | && form == DW_FORM_data4 | |
15657 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
15658 | { |
15659 | complaint | |
15660 | (&symfile_complaints, | |
43bbcdc2 PH |
15661 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
15662 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
15663 | DW_UNSND (attr) = 0; |
15664 | } | |
28e94949 | 15665 | |
c906108c SS |
15666 | return info_ptr; |
15667 | } | |
15668 | ||
a8329558 KW |
15669 | /* Read an attribute described by an abbreviated attribute. */ |
15670 | ||
d521ce57 | 15671 | static const gdb_byte * |
dee91e82 DE |
15672 | read_attribute (const struct die_reader_specs *reader, |
15673 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 15674 | const gdb_byte *info_ptr) |
a8329558 KW |
15675 | { |
15676 | attr->name = abbrev->name; | |
dee91e82 | 15677 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
15678 | } |
15679 | ||
0963b4bd | 15680 | /* Read dwarf information from a buffer. */ |
c906108c SS |
15681 | |
15682 | static unsigned int | |
a1855c1d | 15683 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 15684 | { |
fe1b8b76 | 15685 | return bfd_get_8 (abfd, buf); |
c906108c SS |
15686 | } |
15687 | ||
15688 | static int | |
a1855c1d | 15689 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 15690 | { |
fe1b8b76 | 15691 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
15692 | } |
15693 | ||
15694 | static unsigned int | |
a1855c1d | 15695 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15696 | { |
fe1b8b76 | 15697 | return bfd_get_16 (abfd, buf); |
c906108c SS |
15698 | } |
15699 | ||
21ae7a4d | 15700 | static int |
a1855c1d | 15701 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
15702 | { |
15703 | return bfd_get_signed_16 (abfd, buf); | |
15704 | } | |
15705 | ||
c906108c | 15706 | static unsigned int |
a1855c1d | 15707 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15708 | { |
fe1b8b76 | 15709 | return bfd_get_32 (abfd, buf); |
c906108c SS |
15710 | } |
15711 | ||
21ae7a4d | 15712 | static int |
a1855c1d | 15713 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
15714 | { |
15715 | return bfd_get_signed_32 (abfd, buf); | |
15716 | } | |
15717 | ||
93311388 | 15718 | static ULONGEST |
a1855c1d | 15719 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15720 | { |
fe1b8b76 | 15721 | return bfd_get_64 (abfd, buf); |
c906108c SS |
15722 | } |
15723 | ||
15724 | static CORE_ADDR | |
d521ce57 | 15725 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 15726 | unsigned int *bytes_read) |
c906108c | 15727 | { |
e7c27a73 | 15728 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
15729 | CORE_ADDR retval = 0; |
15730 | ||
107d2387 | 15731 | if (cu_header->signed_addr_p) |
c906108c | 15732 | { |
107d2387 AC |
15733 | switch (cu_header->addr_size) |
15734 | { | |
15735 | case 2: | |
fe1b8b76 | 15736 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
15737 | break; |
15738 | case 4: | |
fe1b8b76 | 15739 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
15740 | break; |
15741 | case 8: | |
fe1b8b76 | 15742 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
15743 | break; |
15744 | default: | |
8e65ff28 | 15745 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 15746 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 15747 | bfd_get_filename (abfd)); |
107d2387 AC |
15748 | } |
15749 | } | |
15750 | else | |
15751 | { | |
15752 | switch (cu_header->addr_size) | |
15753 | { | |
15754 | case 2: | |
fe1b8b76 | 15755 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
15756 | break; |
15757 | case 4: | |
fe1b8b76 | 15758 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
15759 | break; |
15760 | case 8: | |
fe1b8b76 | 15761 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
15762 | break; |
15763 | default: | |
8e65ff28 | 15764 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
15765 | _("read_address: bad switch, " |
15766 | "unsigned [in module %s]"), | |
659b0389 | 15767 | bfd_get_filename (abfd)); |
107d2387 | 15768 | } |
c906108c | 15769 | } |
64367e0a | 15770 | |
107d2387 AC |
15771 | *bytes_read = cu_header->addr_size; |
15772 | return retval; | |
c906108c SS |
15773 | } |
15774 | ||
f7ef9339 | 15775 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
15776 | specification allows the initial length to take up either 4 bytes |
15777 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
15778 | bytes describe the length and all offsets will be 8 bytes in length | |
15779 | instead of 4. | |
15780 | ||
f7ef9339 KB |
15781 | An older, non-standard 64-bit format is also handled by this |
15782 | function. The older format in question stores the initial length | |
15783 | as an 8-byte quantity without an escape value. Lengths greater | |
15784 | than 2^32 aren't very common which means that the initial 4 bytes | |
15785 | is almost always zero. Since a length value of zero doesn't make | |
15786 | sense for the 32-bit format, this initial zero can be considered to | |
15787 | be an escape value which indicates the presence of the older 64-bit | |
15788 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
15789 | greater than 4GB. If it becomes necessary to handle lengths |
15790 | somewhat larger than 4GB, we could allow other small values (such | |
15791 | as the non-sensical values of 1, 2, and 3) to also be used as | |
15792 | escape values indicating the presence of the old format. | |
f7ef9339 | 15793 | |
917c78fc MK |
15794 | The value returned via bytes_read should be used to increment the |
15795 | relevant pointer after calling read_initial_length(). | |
c764a876 | 15796 | |
613e1657 KB |
15797 | [ Note: read_initial_length() and read_offset() are based on the |
15798 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 15799 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
15800 | from: |
15801 | ||
f7ef9339 | 15802 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 15803 | |
613e1657 KB |
15804 | This document is only a draft and is subject to change. (So beware.) |
15805 | ||
f7ef9339 | 15806 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
15807 | determined empirically by examining 64-bit ELF files produced by |
15808 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
15809 | |
15810 | - Kevin, July 16, 2002 | |
613e1657 KB |
15811 | ] */ |
15812 | ||
15813 | static LONGEST | |
d521ce57 | 15814 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 15815 | { |
fe1b8b76 | 15816 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 15817 | |
dd373385 | 15818 | if (length == 0xffffffff) |
613e1657 | 15819 | { |
fe1b8b76 | 15820 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 15821 | *bytes_read = 12; |
613e1657 | 15822 | } |
dd373385 | 15823 | else if (length == 0) |
f7ef9339 | 15824 | { |
dd373385 | 15825 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 15826 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 15827 | *bytes_read = 8; |
f7ef9339 | 15828 | } |
613e1657 KB |
15829 | else |
15830 | { | |
15831 | *bytes_read = 4; | |
613e1657 KB |
15832 | } |
15833 | ||
c764a876 DE |
15834 | return length; |
15835 | } | |
dd373385 | 15836 | |
c764a876 DE |
15837 | /* Cover function for read_initial_length. |
15838 | Returns the length of the object at BUF, and stores the size of the | |
15839 | initial length in *BYTES_READ and stores the size that offsets will be in | |
15840 | *OFFSET_SIZE. | |
15841 | If the initial length size is not equivalent to that specified in | |
15842 | CU_HEADER then issue a complaint. | |
15843 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 15844 | |
c764a876 | 15845 | static LONGEST |
d521ce57 | 15846 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
15847 | const struct comp_unit_head *cu_header, |
15848 | unsigned int *bytes_read, | |
15849 | unsigned int *offset_size) | |
15850 | { | |
15851 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
15852 | ||
15853 | gdb_assert (cu_header->initial_length_size == 4 | |
15854 | || cu_header->initial_length_size == 8 | |
15855 | || cu_header->initial_length_size == 12); | |
15856 | ||
15857 | if (cu_header->initial_length_size != *bytes_read) | |
15858 | complaint (&symfile_complaints, | |
15859 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 15860 | |
c764a876 | 15861 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 15862 | return length; |
613e1657 KB |
15863 | } |
15864 | ||
15865 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 15866 | given by cu_header->offset_size. */ |
613e1657 KB |
15867 | |
15868 | static LONGEST | |
d521ce57 TT |
15869 | read_offset (bfd *abfd, const gdb_byte *buf, |
15870 | const struct comp_unit_head *cu_header, | |
891d2f0b | 15871 | unsigned int *bytes_read) |
c764a876 DE |
15872 | { |
15873 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 15874 | |
c764a876 DE |
15875 | *bytes_read = cu_header->offset_size; |
15876 | return offset; | |
15877 | } | |
15878 | ||
15879 | /* Read an offset from the data stream. */ | |
15880 | ||
15881 | static LONGEST | |
d521ce57 | 15882 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
15883 | { |
15884 | LONGEST retval = 0; | |
15885 | ||
c764a876 | 15886 | switch (offset_size) |
613e1657 KB |
15887 | { |
15888 | case 4: | |
fe1b8b76 | 15889 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
15890 | break; |
15891 | case 8: | |
fe1b8b76 | 15892 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
15893 | break; |
15894 | default: | |
8e65ff28 | 15895 | internal_error (__FILE__, __LINE__, |
c764a876 | 15896 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 15897 | bfd_get_filename (abfd)); |
613e1657 KB |
15898 | } |
15899 | ||
917c78fc | 15900 | return retval; |
613e1657 KB |
15901 | } |
15902 | ||
d521ce57 TT |
15903 | static const gdb_byte * |
15904 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
15905 | { |
15906 | /* If the size of a host char is 8 bits, we can return a pointer | |
15907 | to the buffer, otherwise we have to copy the data to a buffer | |
15908 | allocated on the temporary obstack. */ | |
4bdf3d34 | 15909 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 15910 | return buf; |
c906108c SS |
15911 | } |
15912 | ||
d521ce57 TT |
15913 | static const char * |
15914 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
15915 | unsigned int *bytes_read_ptr) | |
c906108c SS |
15916 | { |
15917 | /* If the size of a host char is 8 bits, we can return a pointer | |
15918 | to the string, otherwise we have to copy the string to a buffer | |
15919 | allocated on the temporary obstack. */ | |
4bdf3d34 | 15920 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
15921 | if (*buf == '\0') |
15922 | { | |
15923 | *bytes_read_ptr = 1; | |
15924 | return NULL; | |
15925 | } | |
d521ce57 TT |
15926 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
15927 | return (const char *) buf; | |
4bdf3d34 JJ |
15928 | } |
15929 | ||
d521ce57 | 15930 | static const char * |
cf2c3c16 | 15931 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 15932 | { |
be391dca | 15933 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 15934 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
15935 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
15936 | bfd_get_filename (abfd)); | |
dce234bc | 15937 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
15938 | error (_("DW_FORM_strp pointing outside of " |
15939 | ".debug_str section [in module %s]"), | |
15940 | bfd_get_filename (abfd)); | |
4bdf3d34 | 15941 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 15942 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 15943 | return NULL; |
d521ce57 | 15944 | return (const char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
15945 | } |
15946 | ||
36586728 TT |
15947 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
15948 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
15949 | the string consists of a single NUL byte, return NULL; otherwise | |
15950 | return a pointer to the string. */ | |
15951 | ||
d521ce57 | 15952 | static const char * |
36586728 TT |
15953 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
15954 | { | |
15955 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
15956 | ||
15957 | if (dwz->str.buffer == NULL) | |
15958 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
15959 | "section [in module %s]"), | |
15960 | bfd_get_filename (dwz->dwz_bfd)); | |
15961 | if (str_offset >= dwz->str.size) | |
15962 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
15963 | ".debug_str section [in module %s]"), | |
15964 | bfd_get_filename (dwz->dwz_bfd)); | |
15965 | gdb_assert (HOST_CHAR_BIT == 8); | |
15966 | if (dwz->str.buffer[str_offset] == '\0') | |
15967 | return NULL; | |
d521ce57 | 15968 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
15969 | } |
15970 | ||
d521ce57 TT |
15971 | static const char * |
15972 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
15973 | const struct comp_unit_head *cu_header, |
15974 | unsigned int *bytes_read_ptr) | |
15975 | { | |
15976 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
15977 | ||
15978 | return read_indirect_string_at_offset (abfd, str_offset); | |
15979 | } | |
15980 | ||
12df843f | 15981 | static ULONGEST |
d521ce57 TT |
15982 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
15983 | unsigned int *bytes_read_ptr) | |
c906108c | 15984 | { |
12df843f | 15985 | ULONGEST result; |
ce5d95e1 | 15986 | unsigned int num_read; |
c906108c SS |
15987 | int i, shift; |
15988 | unsigned char byte; | |
15989 | ||
15990 | result = 0; | |
15991 | shift = 0; | |
15992 | num_read = 0; | |
15993 | i = 0; | |
15994 | while (1) | |
15995 | { | |
fe1b8b76 | 15996 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
15997 | buf++; |
15998 | num_read++; | |
12df843f | 15999 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
16000 | if ((byte & 128) == 0) |
16001 | { | |
16002 | break; | |
16003 | } | |
16004 | shift += 7; | |
16005 | } | |
16006 | *bytes_read_ptr = num_read; | |
16007 | return result; | |
16008 | } | |
16009 | ||
12df843f | 16010 | static LONGEST |
d521ce57 TT |
16011 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
16012 | unsigned int *bytes_read_ptr) | |
c906108c | 16013 | { |
12df843f | 16014 | LONGEST result; |
77e0b926 | 16015 | int i, shift, num_read; |
c906108c SS |
16016 | unsigned char byte; |
16017 | ||
16018 | result = 0; | |
16019 | shift = 0; | |
c906108c SS |
16020 | num_read = 0; |
16021 | i = 0; | |
16022 | while (1) | |
16023 | { | |
fe1b8b76 | 16024 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16025 | buf++; |
16026 | num_read++; | |
12df843f | 16027 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
16028 | shift += 7; |
16029 | if ((byte & 128) == 0) | |
16030 | { | |
16031 | break; | |
16032 | } | |
16033 | } | |
77e0b926 | 16034 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 16035 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
16036 | *bytes_read_ptr = num_read; |
16037 | return result; | |
16038 | } | |
16039 | ||
3019eac3 DE |
16040 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
16041 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
16042 | ADDR_SIZE is the size of addresses from the CU header. */ | |
16043 | ||
16044 | static CORE_ADDR | |
16045 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
16046 | { | |
16047 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
16048 | bfd *abfd = objfile->obfd; | |
16049 | const gdb_byte *info_ptr; | |
16050 | ||
16051 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
16052 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
16053 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 16054 | objfile_name (objfile)); |
3019eac3 DE |
16055 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
16056 | error (_("DW_FORM_addr_index pointing outside of " | |
16057 | ".debug_addr section [in module %s]"), | |
4262abfb | 16058 | objfile_name (objfile)); |
3019eac3 DE |
16059 | info_ptr = (dwarf2_per_objfile->addr.buffer |
16060 | + addr_base + addr_index * addr_size); | |
16061 | if (addr_size == 4) | |
16062 | return bfd_get_32 (abfd, info_ptr); | |
16063 | else | |
16064 | return bfd_get_64 (abfd, info_ptr); | |
16065 | } | |
16066 | ||
16067 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
16068 | ||
16069 | static CORE_ADDR | |
16070 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
16071 | { | |
16072 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
16073 | } | |
16074 | ||
16075 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
16076 | ||
16077 | static CORE_ADDR | |
d521ce57 | 16078 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
16079 | unsigned int *bytes_read) |
16080 | { | |
16081 | bfd *abfd = cu->objfile->obfd; | |
16082 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
16083 | ||
16084 | return read_addr_index (cu, addr_index); | |
16085 | } | |
16086 | ||
16087 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
16088 | back to dwarf2_read_addr_index. */ | |
16089 | ||
16090 | struct dwarf2_read_addr_index_data | |
16091 | { | |
16092 | ULONGEST addr_base; | |
16093 | int addr_size; | |
16094 | }; | |
16095 | ||
16096 | /* die_reader_func for dwarf2_read_addr_index. */ | |
16097 | ||
16098 | static void | |
16099 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 16100 | const gdb_byte *info_ptr, |
3019eac3 DE |
16101 | struct die_info *comp_unit_die, |
16102 | int has_children, | |
16103 | void *data) | |
16104 | { | |
16105 | struct dwarf2_cu *cu = reader->cu; | |
16106 | struct dwarf2_read_addr_index_data *aidata = | |
16107 | (struct dwarf2_read_addr_index_data *) data; | |
16108 | ||
16109 | aidata->addr_base = cu->addr_base; | |
16110 | aidata->addr_size = cu->header.addr_size; | |
16111 | } | |
16112 | ||
16113 | /* Given an index in .debug_addr, fetch the value. | |
16114 | NOTE: This can be called during dwarf expression evaluation, | |
16115 | long after the debug information has been read, and thus per_cu->cu | |
16116 | may no longer exist. */ | |
16117 | ||
16118 | CORE_ADDR | |
16119 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
16120 | unsigned int addr_index) | |
16121 | { | |
16122 | struct objfile *objfile = per_cu->objfile; | |
16123 | struct dwarf2_cu *cu = per_cu->cu; | |
16124 | ULONGEST addr_base; | |
16125 | int addr_size; | |
16126 | ||
16127 | /* This is intended to be called from outside this file. */ | |
16128 | dw2_setup (objfile); | |
16129 | ||
16130 | /* We need addr_base and addr_size. | |
16131 | If we don't have PER_CU->cu, we have to get it. | |
16132 | Nasty, but the alternative is storing the needed info in PER_CU, | |
16133 | which at this point doesn't seem justified: it's not clear how frequently | |
16134 | it would get used and it would increase the size of every PER_CU. | |
16135 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
16136 | so we're not in uncharted territory here. | |
16137 | Alas we need to be a bit more complicated as addr_base is contained | |
16138 | in the DIE. | |
16139 | ||
16140 | We don't need to read the entire CU(/TU). | |
16141 | We just need the header and top level die. | |
a1b64ce1 | 16142 | |
3019eac3 | 16143 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 16144 | For now we skip this optimization. */ |
3019eac3 DE |
16145 | |
16146 | if (cu != NULL) | |
16147 | { | |
16148 | addr_base = cu->addr_base; | |
16149 | addr_size = cu->header.addr_size; | |
16150 | } | |
16151 | else | |
16152 | { | |
16153 | struct dwarf2_read_addr_index_data aidata; | |
16154 | ||
a1b64ce1 DE |
16155 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
16156 | we need addr_base. */ | |
16157 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
16158 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
16159 | addr_base = aidata.addr_base; |
16160 | addr_size = aidata.addr_size; | |
16161 | } | |
16162 | ||
16163 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
16164 | } | |
16165 | ||
57d63ce2 DE |
16166 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
16167 | This is only used by the Fission support. */ | |
3019eac3 | 16168 | |
d521ce57 | 16169 | static const char * |
3019eac3 DE |
16170 | read_str_index (const struct die_reader_specs *reader, |
16171 | struct dwarf2_cu *cu, ULONGEST str_index) | |
16172 | { | |
16173 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4262abfb | 16174 | const char *dwo_name = objfile_name (objfile); |
3019eac3 | 16175 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
16176 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
16177 | struct dwarf2_section_info *str_offsets_section = | |
16178 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 16179 | const gdb_byte *info_ptr; |
3019eac3 | 16180 | ULONGEST str_offset; |
57d63ce2 | 16181 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 16182 | |
73869dc2 DE |
16183 | dwarf2_read_section (objfile, str_section); |
16184 | dwarf2_read_section (objfile, str_offsets_section); | |
16185 | if (str_section->buffer == NULL) | |
57d63ce2 | 16186 | error (_("%s used without .debug_str.dwo section" |
3019eac3 | 16187 | " in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16188 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16189 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 16190 | error (_("%s used without .debug_str_offsets.dwo section" |
3019eac3 | 16191 | " in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16192 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16193 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 16194 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
3019eac3 | 16195 | " section in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16196 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16197 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
16198 | + str_index * cu->header.offset_size); |
16199 | if (cu->header.offset_size == 4) | |
16200 | str_offset = bfd_get_32 (abfd, info_ptr); | |
16201 | else | |
16202 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 16203 | if (str_offset >= str_section->size) |
57d63ce2 | 16204 | error (_("Offset from %s pointing outside of" |
3019eac3 | 16205 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16206 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16207 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
16208 | } |
16209 | ||
3019eac3 DE |
16210 | /* Return the length of an LEB128 number in BUF. */ |
16211 | ||
16212 | static int | |
16213 | leb128_size (const gdb_byte *buf) | |
16214 | { | |
16215 | const gdb_byte *begin = buf; | |
16216 | gdb_byte byte; | |
16217 | ||
16218 | while (1) | |
16219 | { | |
16220 | byte = *buf++; | |
16221 | if ((byte & 128) == 0) | |
16222 | return buf - begin; | |
16223 | } | |
16224 | } | |
16225 | ||
c906108c | 16226 | static void |
e142c38c | 16227 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
16228 | { |
16229 | switch (lang) | |
16230 | { | |
16231 | case DW_LANG_C89: | |
76bee0cc | 16232 | case DW_LANG_C99: |
c906108c | 16233 | case DW_LANG_C: |
d1be3247 | 16234 | case DW_LANG_UPC: |
e142c38c | 16235 | cu->language = language_c; |
c906108c SS |
16236 | break; |
16237 | case DW_LANG_C_plus_plus: | |
e142c38c | 16238 | cu->language = language_cplus; |
c906108c | 16239 | break; |
6aecb9c2 JB |
16240 | case DW_LANG_D: |
16241 | cu->language = language_d; | |
16242 | break; | |
c906108c SS |
16243 | case DW_LANG_Fortran77: |
16244 | case DW_LANG_Fortran90: | |
b21b22e0 | 16245 | case DW_LANG_Fortran95: |
e142c38c | 16246 | cu->language = language_fortran; |
c906108c | 16247 | break; |
a766d390 DE |
16248 | case DW_LANG_Go: |
16249 | cu->language = language_go; | |
16250 | break; | |
c906108c | 16251 | case DW_LANG_Mips_Assembler: |
e142c38c | 16252 | cu->language = language_asm; |
c906108c | 16253 | break; |
bebd888e | 16254 | case DW_LANG_Java: |
e142c38c | 16255 | cu->language = language_java; |
bebd888e | 16256 | break; |
c906108c | 16257 | case DW_LANG_Ada83: |
8aaf0b47 | 16258 | case DW_LANG_Ada95: |
bc5f45f8 JB |
16259 | cu->language = language_ada; |
16260 | break; | |
72019c9c GM |
16261 | case DW_LANG_Modula2: |
16262 | cu->language = language_m2; | |
16263 | break; | |
fe8e67fd PM |
16264 | case DW_LANG_Pascal83: |
16265 | cu->language = language_pascal; | |
16266 | break; | |
22566fbd DJ |
16267 | case DW_LANG_ObjC: |
16268 | cu->language = language_objc; | |
16269 | break; | |
c906108c SS |
16270 | case DW_LANG_Cobol74: |
16271 | case DW_LANG_Cobol85: | |
c906108c | 16272 | default: |
e142c38c | 16273 | cu->language = language_minimal; |
c906108c SS |
16274 | break; |
16275 | } | |
e142c38c | 16276 | cu->language_defn = language_def (cu->language); |
c906108c SS |
16277 | } |
16278 | ||
16279 | /* Return the named attribute or NULL if not there. */ | |
16280 | ||
16281 | static struct attribute * | |
e142c38c | 16282 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 16283 | { |
a48e046c | 16284 | for (;;) |
c906108c | 16285 | { |
a48e046c TT |
16286 | unsigned int i; |
16287 | struct attribute *spec = NULL; | |
16288 | ||
16289 | for (i = 0; i < die->num_attrs; ++i) | |
16290 | { | |
16291 | if (die->attrs[i].name == name) | |
16292 | return &die->attrs[i]; | |
16293 | if (die->attrs[i].name == DW_AT_specification | |
16294 | || die->attrs[i].name == DW_AT_abstract_origin) | |
16295 | spec = &die->attrs[i]; | |
16296 | } | |
16297 | ||
16298 | if (!spec) | |
16299 | break; | |
c906108c | 16300 | |
f2f0e013 | 16301 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 16302 | } |
c5aa993b | 16303 | |
c906108c SS |
16304 | return NULL; |
16305 | } | |
16306 | ||
348e048f DE |
16307 | /* Return the named attribute or NULL if not there, |
16308 | but do not follow DW_AT_specification, etc. | |
16309 | This is for use in contexts where we're reading .debug_types dies. | |
16310 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
16311 | back up the chain, and we want to go down. */ | |
16312 | ||
16313 | static struct attribute * | |
45e58e77 | 16314 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
16315 | { |
16316 | unsigned int i; | |
16317 | ||
16318 | for (i = 0; i < die->num_attrs; ++i) | |
16319 | if (die->attrs[i].name == name) | |
16320 | return &die->attrs[i]; | |
16321 | ||
16322 | return NULL; | |
16323 | } | |
16324 | ||
05cf31d1 JB |
16325 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
16326 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 16327 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
16328 | |
16329 | static int | |
16330 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
16331 | { | |
16332 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16333 | ||
16334 | return (attr && DW_UNSND (attr)); | |
16335 | } | |
16336 | ||
3ca72b44 | 16337 | static int |
e142c38c | 16338 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 16339 | { |
05cf31d1 JB |
16340 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
16341 | which value is non-zero. However, we have to be careful with | |
16342 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
16343 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
16344 | end up accidently finding a declaration attribute that belongs | |
16345 | to a different DIE referenced by the specification attribute, | |
16346 | even though the given DIE does not have a declaration attribute. */ | |
16347 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
16348 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
16349 | } |
16350 | ||
63d06c5c | 16351 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 16352 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
16353 | containing the return value on output. If there is no |
16354 | specification, but there is an abstract origin, that is | |
16355 | returned. */ | |
63d06c5c DC |
16356 | |
16357 | static struct die_info * | |
f2f0e013 | 16358 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 16359 | { |
f2f0e013 DJ |
16360 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
16361 | *spec_cu); | |
63d06c5c | 16362 | |
edb3359d DJ |
16363 | if (spec_attr == NULL) |
16364 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
16365 | ||
63d06c5c DC |
16366 | if (spec_attr == NULL) |
16367 | return NULL; | |
16368 | else | |
f2f0e013 | 16369 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 16370 | } |
c906108c | 16371 | |
debd256d | 16372 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
16373 | refers to. |
16374 | NOTE: This is also used as a "cleanup" function. */ | |
16375 | ||
debd256d JB |
16376 | static void |
16377 | free_line_header (struct line_header *lh) | |
16378 | { | |
16379 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 16380 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
16381 | |
16382 | /* Remember that all the lh->file_names[i].name pointers are | |
16383 | pointers into debug_line_buffer, and don't need to be freed. */ | |
16384 | if (lh->file_names) | |
a8bc7b56 | 16385 | xfree (lh->file_names); |
debd256d JB |
16386 | |
16387 | /* Similarly for the include directory names. */ | |
16388 | if (lh->include_dirs) | |
a8bc7b56 | 16389 | xfree (lh->include_dirs); |
debd256d | 16390 | |
a8bc7b56 | 16391 | xfree (lh); |
debd256d JB |
16392 | } |
16393 | ||
debd256d | 16394 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 16395 | |
debd256d | 16396 | static void |
d521ce57 | 16397 | add_include_dir (struct line_header *lh, const char *include_dir) |
c906108c | 16398 | { |
debd256d JB |
16399 | /* Grow the array if necessary. */ |
16400 | if (lh->include_dirs_size == 0) | |
c5aa993b | 16401 | { |
debd256d JB |
16402 | lh->include_dirs_size = 1; /* for testing */ |
16403 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
16404 | * sizeof (*lh->include_dirs)); | |
16405 | } | |
16406 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
16407 | { | |
16408 | lh->include_dirs_size *= 2; | |
16409 | lh->include_dirs = xrealloc (lh->include_dirs, | |
16410 | (lh->include_dirs_size | |
16411 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 16412 | } |
c906108c | 16413 | |
debd256d JB |
16414 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
16415 | } | |
6e70227d | 16416 | |
debd256d | 16417 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 16418 | |
debd256d JB |
16419 | static void |
16420 | add_file_name (struct line_header *lh, | |
d521ce57 | 16421 | const char *name, |
debd256d JB |
16422 | unsigned int dir_index, |
16423 | unsigned int mod_time, | |
16424 | unsigned int length) | |
16425 | { | |
16426 | struct file_entry *fe; | |
16427 | ||
16428 | /* Grow the array if necessary. */ | |
16429 | if (lh->file_names_size == 0) | |
16430 | { | |
16431 | lh->file_names_size = 1; /* for testing */ | |
16432 | lh->file_names = xmalloc (lh->file_names_size | |
16433 | * sizeof (*lh->file_names)); | |
16434 | } | |
16435 | else if (lh->num_file_names >= lh->file_names_size) | |
16436 | { | |
16437 | lh->file_names_size *= 2; | |
16438 | lh->file_names = xrealloc (lh->file_names, | |
16439 | (lh->file_names_size | |
16440 | * sizeof (*lh->file_names))); | |
16441 | } | |
16442 | ||
16443 | fe = &lh->file_names[lh->num_file_names++]; | |
16444 | fe->name = name; | |
16445 | fe->dir_index = dir_index; | |
16446 | fe->mod_time = mod_time; | |
16447 | fe->length = length; | |
aaa75496 | 16448 | fe->included_p = 0; |
cb1df416 | 16449 | fe->symtab = NULL; |
debd256d | 16450 | } |
6e70227d | 16451 | |
36586728 TT |
16452 | /* A convenience function to find the proper .debug_line section for a |
16453 | CU. */ | |
16454 | ||
16455 | static struct dwarf2_section_info * | |
16456 | get_debug_line_section (struct dwarf2_cu *cu) | |
16457 | { | |
16458 | struct dwarf2_section_info *section; | |
16459 | ||
16460 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
16461 | DWO file. */ | |
16462 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
16463 | section = &cu->dwo_unit->dwo_file->sections.line; | |
16464 | else if (cu->per_cu->is_dwz) | |
16465 | { | |
16466 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
16467 | ||
16468 | section = &dwz->line; | |
16469 | } | |
16470 | else | |
16471 | section = &dwarf2_per_objfile->line; | |
16472 | ||
16473 | return section; | |
16474 | } | |
16475 | ||
debd256d | 16476 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 16477 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 16478 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
16479 | |
16480 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
16481 | the returned object point into the dwarf line section buffer, |
16482 | and must not be freed. */ | |
ae2de4f8 | 16483 | |
debd256d | 16484 | static struct line_header * |
3019eac3 | 16485 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
16486 | { |
16487 | struct cleanup *back_to; | |
16488 | struct line_header *lh; | |
d521ce57 | 16489 | const gdb_byte *line_ptr; |
c764a876 | 16490 | unsigned int bytes_read, offset_size; |
debd256d | 16491 | int i; |
d521ce57 | 16492 | const char *cur_dir, *cur_file; |
3019eac3 DE |
16493 | struct dwarf2_section_info *section; |
16494 | bfd *abfd; | |
16495 | ||
36586728 | 16496 | section = get_debug_line_section (cu); |
3019eac3 DE |
16497 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
16498 | if (section->buffer == NULL) | |
debd256d | 16499 | { |
3019eac3 DE |
16500 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
16501 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
16502 | else | |
16503 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
16504 | return 0; |
16505 | } | |
16506 | ||
fceca515 DE |
16507 | /* We can't do this until we know the section is non-empty. |
16508 | Only then do we know we have such a section. */ | |
a32a8923 | 16509 | abfd = get_section_bfd_owner (section); |
fceca515 | 16510 | |
a738430d MK |
16511 | /* Make sure that at least there's room for the total_length field. |
16512 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 16513 | if (offset + 4 >= section->size) |
debd256d | 16514 | { |
4d3c2250 | 16515 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
16516 | return 0; |
16517 | } | |
16518 | ||
16519 | lh = xmalloc (sizeof (*lh)); | |
16520 | memset (lh, 0, sizeof (*lh)); | |
16521 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
16522 | (void *) lh); | |
16523 | ||
3019eac3 | 16524 | line_ptr = section->buffer + offset; |
debd256d | 16525 | |
a738430d | 16526 | /* Read in the header. */ |
6e70227d | 16527 | lh->total_length = |
c764a876 DE |
16528 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
16529 | &bytes_read, &offset_size); | |
debd256d | 16530 | line_ptr += bytes_read; |
3019eac3 | 16531 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 16532 | { |
4d3c2250 | 16533 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
2f324bf6 | 16534 | do_cleanups (back_to); |
debd256d JB |
16535 | return 0; |
16536 | } | |
16537 | lh->statement_program_end = line_ptr + lh->total_length; | |
16538 | lh->version = read_2_bytes (abfd, line_ptr); | |
16539 | line_ptr += 2; | |
c764a876 DE |
16540 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
16541 | line_ptr += offset_size; | |
debd256d JB |
16542 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
16543 | line_ptr += 1; | |
2dc7f7b3 TT |
16544 | if (lh->version >= 4) |
16545 | { | |
16546 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
16547 | line_ptr += 1; | |
16548 | } | |
16549 | else | |
16550 | lh->maximum_ops_per_instruction = 1; | |
16551 | ||
16552 | if (lh->maximum_ops_per_instruction == 0) | |
16553 | { | |
16554 | lh->maximum_ops_per_instruction = 1; | |
16555 | complaint (&symfile_complaints, | |
3e43a32a MS |
16556 | _("invalid maximum_ops_per_instruction " |
16557 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
16558 | } |
16559 | ||
debd256d JB |
16560 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
16561 | line_ptr += 1; | |
16562 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
16563 | line_ptr += 1; | |
16564 | lh->line_range = read_1_byte (abfd, line_ptr); | |
16565 | line_ptr += 1; | |
16566 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
16567 | line_ptr += 1; | |
16568 | lh->standard_opcode_lengths | |
fe1b8b76 | 16569 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
16570 | |
16571 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
16572 | for (i = 1; i < lh->opcode_base; ++i) | |
16573 | { | |
16574 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
16575 | line_ptr += 1; | |
16576 | } | |
16577 | ||
a738430d | 16578 | /* Read directory table. */ |
9b1c24c8 | 16579 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
16580 | { |
16581 | line_ptr += bytes_read; | |
16582 | add_include_dir (lh, cur_dir); | |
16583 | } | |
16584 | line_ptr += bytes_read; | |
16585 | ||
a738430d | 16586 | /* Read file name table. */ |
9b1c24c8 | 16587 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
16588 | { |
16589 | unsigned int dir_index, mod_time, length; | |
16590 | ||
16591 | line_ptr += bytes_read; | |
16592 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16593 | line_ptr += bytes_read; | |
16594 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16595 | line_ptr += bytes_read; | |
16596 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16597 | line_ptr += bytes_read; | |
16598 | ||
16599 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
16600 | } | |
16601 | line_ptr += bytes_read; | |
6e70227d | 16602 | lh->statement_program_start = line_ptr; |
debd256d | 16603 | |
3019eac3 | 16604 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 16605 | complaint (&symfile_complaints, |
3e43a32a MS |
16606 | _("line number info header doesn't " |
16607 | "fit in `.debug_line' section")); | |
debd256d JB |
16608 | |
16609 | discard_cleanups (back_to); | |
16610 | return lh; | |
16611 | } | |
c906108c | 16612 | |
c6da4cef DE |
16613 | /* Subroutine of dwarf_decode_lines to simplify it. |
16614 | Return the file name of the psymtab for included file FILE_INDEX | |
16615 | in line header LH of PST. | |
16616 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
16617 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
16618 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
16619 | ||
16620 | The function creates dangling cleanup registration. */ | |
c6da4cef | 16621 | |
d521ce57 | 16622 | static const char * |
c6da4cef DE |
16623 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
16624 | const struct partial_symtab *pst, | |
16625 | const char *comp_dir) | |
16626 | { | |
16627 | const struct file_entry fe = lh->file_names [file_index]; | |
d521ce57 TT |
16628 | const char *include_name = fe.name; |
16629 | const char *include_name_to_compare = include_name; | |
16630 | const char *dir_name = NULL; | |
72b9f47f TT |
16631 | const char *pst_filename; |
16632 | char *copied_name = NULL; | |
c6da4cef DE |
16633 | int file_is_pst; |
16634 | ||
16635 | if (fe.dir_index) | |
16636 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
16637 | ||
16638 | if (!IS_ABSOLUTE_PATH (include_name) | |
16639 | && (dir_name != NULL || comp_dir != NULL)) | |
16640 | { | |
16641 | /* Avoid creating a duplicate psymtab for PST. | |
16642 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
16643 | Before we do the comparison, however, we need to account | |
16644 | for DIR_NAME and COMP_DIR. | |
16645 | First prepend dir_name (if non-NULL). If we still don't | |
16646 | have an absolute path prepend comp_dir (if non-NULL). | |
16647 | However, the directory we record in the include-file's | |
16648 | psymtab does not contain COMP_DIR (to match the | |
16649 | corresponding symtab(s)). | |
16650 | ||
16651 | Example: | |
16652 | ||
16653 | bash$ cd /tmp | |
16654 | bash$ gcc -g ./hello.c | |
16655 | include_name = "hello.c" | |
16656 | dir_name = "." | |
16657 | DW_AT_comp_dir = comp_dir = "/tmp" | |
16658 | DW_AT_name = "./hello.c" */ | |
16659 | ||
16660 | if (dir_name != NULL) | |
16661 | { | |
d521ce57 TT |
16662 | char *tem = concat (dir_name, SLASH_STRING, |
16663 | include_name, (char *)NULL); | |
16664 | ||
16665 | make_cleanup (xfree, tem); | |
16666 | include_name = tem; | |
c6da4cef | 16667 | include_name_to_compare = include_name; |
c6da4cef DE |
16668 | } |
16669 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
16670 | { | |
d521ce57 TT |
16671 | char *tem = concat (comp_dir, SLASH_STRING, |
16672 | include_name, (char *)NULL); | |
16673 | ||
16674 | make_cleanup (xfree, tem); | |
16675 | include_name_to_compare = tem; | |
c6da4cef DE |
16676 | } |
16677 | } | |
16678 | ||
16679 | pst_filename = pst->filename; | |
16680 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
16681 | { | |
72b9f47f TT |
16682 | copied_name = concat (pst->dirname, SLASH_STRING, |
16683 | pst_filename, (char *)NULL); | |
16684 | pst_filename = copied_name; | |
c6da4cef DE |
16685 | } |
16686 | ||
1e3fad37 | 16687 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 16688 | |
72b9f47f TT |
16689 | if (copied_name != NULL) |
16690 | xfree (copied_name); | |
c6da4cef DE |
16691 | |
16692 | if (file_is_pst) | |
16693 | return NULL; | |
16694 | return include_name; | |
16695 | } | |
16696 | ||
c91513d8 PP |
16697 | /* Ignore this record_line request. */ |
16698 | ||
16699 | static void | |
16700 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
16701 | { | |
16702 | return; | |
16703 | } | |
16704 | ||
f3f5162e DE |
16705 | /* Subroutine of dwarf_decode_lines to simplify it. |
16706 | Process the line number information in LH. */ | |
debd256d | 16707 | |
c906108c | 16708 | static void |
f3f5162e DE |
16709 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
16710 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 16711 | { |
d521ce57 TT |
16712 | const gdb_byte *line_ptr, *extended_end; |
16713 | const gdb_byte *line_end; | |
a8c50c1f | 16714 | unsigned int bytes_read, extended_len; |
c906108c | 16715 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
16716 | CORE_ADDR baseaddr; |
16717 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 16718 | bfd *abfd = objfile->obfd; |
fbf65064 | 16719 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 16720 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 16721 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
16722 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
16723 | = record_line; | |
e142c38c DJ |
16724 | |
16725 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 16726 | |
debd256d JB |
16727 | line_ptr = lh->statement_program_start; |
16728 | line_end = lh->statement_program_end; | |
c906108c SS |
16729 | |
16730 | /* Read the statement sequences until there's nothing left. */ | |
16731 | while (line_ptr < line_end) | |
16732 | { | |
16733 | /* state machine registers */ | |
16734 | CORE_ADDR address = 0; | |
16735 | unsigned int file = 1; | |
16736 | unsigned int line = 1; | |
16737 | unsigned int column = 0; | |
debd256d | 16738 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
16739 | int basic_block = 0; |
16740 | int end_sequence = 0; | |
fbf65064 | 16741 | CORE_ADDR addr; |
2dc7f7b3 | 16742 | unsigned char op_index = 0; |
c906108c | 16743 | |
aaa75496 | 16744 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 16745 | { |
aaa75496 | 16746 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
16747 | /* lh->include_dirs and lh->file_names are 0-based, but the |
16748 | directory and file name numbers in the statement program | |
16749 | are 1-based. */ | |
16750 | struct file_entry *fe = &lh->file_names[file - 1]; | |
d521ce57 | 16751 | const char *dir = NULL; |
a738430d | 16752 | |
debd256d JB |
16753 | if (fe->dir_index) |
16754 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
16755 | |
16756 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
16757 | } |
16758 | ||
a738430d | 16759 | /* Decode the table. */ |
c5aa993b | 16760 | while (!end_sequence) |
c906108c SS |
16761 | { |
16762 | op_code = read_1_byte (abfd, line_ptr); | |
16763 | line_ptr += 1; | |
59205f5a JB |
16764 | if (line_ptr > line_end) |
16765 | { | |
16766 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
16767 | break; | |
16768 | } | |
9aa1fe7e | 16769 | |
debd256d | 16770 | if (op_code >= lh->opcode_base) |
6e70227d | 16771 | { |
a738430d | 16772 | /* Special operand. */ |
debd256d | 16773 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
16774 | address += (((op_index + (adj_opcode / lh->line_range)) |
16775 | / lh->maximum_ops_per_instruction) | |
16776 | * lh->minimum_instruction_length); | |
16777 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
16778 | % lh->maximum_ops_per_instruction); | |
debd256d | 16779 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 16780 | if (lh->num_file_names < file || file == 0) |
25e43795 | 16781 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
16782 | /* For now we ignore lines not starting on an |
16783 | instruction boundary. */ | |
16784 | else if (op_index == 0) | |
25e43795 DJ |
16785 | { |
16786 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 16787 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
16788 | { |
16789 | if (last_subfile != current_subfile) | |
16790 | { | |
16791 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
16792 | if (last_subfile) | |
c91513d8 | 16793 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
16794 | last_subfile = current_subfile; |
16795 | } | |
25e43795 | 16796 | /* Append row to matrix using current values. */ |
7019d805 | 16797 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 16798 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 16799 | } |
25e43795 | 16800 | } |
ca5f395d | 16801 | basic_block = 0; |
9aa1fe7e GK |
16802 | } |
16803 | else switch (op_code) | |
c906108c SS |
16804 | { |
16805 | case DW_LNS_extended_op: | |
3e43a32a MS |
16806 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
16807 | &bytes_read); | |
473b7be6 | 16808 | line_ptr += bytes_read; |
a8c50c1f | 16809 | extended_end = line_ptr + extended_len; |
c906108c SS |
16810 | extended_op = read_1_byte (abfd, line_ptr); |
16811 | line_ptr += 1; | |
16812 | switch (extended_op) | |
16813 | { | |
16814 | case DW_LNE_end_sequence: | |
c91513d8 | 16815 | p_record_line = record_line; |
c906108c | 16816 | end_sequence = 1; |
c906108c SS |
16817 | break; |
16818 | case DW_LNE_set_address: | |
e7c27a73 | 16819 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
16820 | |
16821 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
16822 | { | |
16823 | /* This line table is for a function which has been | |
16824 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
16825 | ||
16826 | long line_offset | |
36586728 | 16827 | = line_ptr - get_debug_line_section (cu)->buffer; |
c91513d8 PP |
16828 | |
16829 | complaint (&symfile_complaints, | |
16830 | _(".debug_line address at offset 0x%lx is 0 " | |
16831 | "[in module %s]"), | |
4262abfb | 16832 | line_offset, objfile_name (objfile)); |
c91513d8 PP |
16833 | p_record_line = noop_record_line; |
16834 | } | |
16835 | ||
2dc7f7b3 | 16836 | op_index = 0; |
107d2387 AC |
16837 | line_ptr += bytes_read; |
16838 | address += baseaddr; | |
c906108c SS |
16839 | break; |
16840 | case DW_LNE_define_file: | |
debd256d | 16841 | { |
d521ce57 | 16842 | const char *cur_file; |
debd256d | 16843 | unsigned int dir_index, mod_time, length; |
6e70227d | 16844 | |
3e43a32a MS |
16845 | cur_file = read_direct_string (abfd, line_ptr, |
16846 | &bytes_read); | |
debd256d JB |
16847 | line_ptr += bytes_read; |
16848 | dir_index = | |
16849 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16850 | line_ptr += bytes_read; | |
16851 | mod_time = | |
16852 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16853 | line_ptr += bytes_read; | |
16854 | length = | |
16855 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16856 | line_ptr += bytes_read; | |
16857 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
16858 | } | |
c906108c | 16859 | break; |
d0c6ba3d CC |
16860 | case DW_LNE_set_discriminator: |
16861 | /* The discriminator is not interesting to the debugger; | |
16862 | just ignore it. */ | |
16863 | line_ptr = extended_end; | |
16864 | break; | |
c906108c | 16865 | default: |
4d3c2250 | 16866 | complaint (&symfile_complaints, |
e2e0b3e5 | 16867 | _("mangled .debug_line section")); |
debd256d | 16868 | return; |
c906108c | 16869 | } |
a8c50c1f DJ |
16870 | /* Make sure that we parsed the extended op correctly. If e.g. |
16871 | we expected a different address size than the producer used, | |
16872 | we may have read the wrong number of bytes. */ | |
16873 | if (line_ptr != extended_end) | |
16874 | { | |
16875 | complaint (&symfile_complaints, | |
16876 | _("mangled .debug_line section")); | |
16877 | return; | |
16878 | } | |
c906108c SS |
16879 | break; |
16880 | case DW_LNS_copy: | |
59205f5a | 16881 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
16882 | dwarf2_debug_line_missing_file_complaint (); |
16883 | else | |
366da635 | 16884 | { |
25e43795 | 16885 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 16886 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
16887 | { |
16888 | if (last_subfile != current_subfile) | |
16889 | { | |
16890 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
16891 | if (last_subfile) | |
c91513d8 | 16892 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
16893 | last_subfile = current_subfile; |
16894 | } | |
7019d805 | 16895 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 16896 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 16897 | } |
366da635 | 16898 | } |
c906108c SS |
16899 | basic_block = 0; |
16900 | break; | |
16901 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
16902 | { |
16903 | CORE_ADDR adjust | |
16904 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16905 | ||
16906 | address += (((op_index + adjust) | |
16907 | / lh->maximum_ops_per_instruction) | |
16908 | * lh->minimum_instruction_length); | |
16909 | op_index = ((op_index + adjust) | |
16910 | % lh->maximum_ops_per_instruction); | |
16911 | line_ptr += bytes_read; | |
16912 | } | |
c906108c SS |
16913 | break; |
16914 | case DW_LNS_advance_line: | |
16915 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
16916 | line_ptr += bytes_read; | |
16917 | break; | |
16918 | case DW_LNS_set_file: | |
debd256d | 16919 | { |
a738430d MK |
16920 | /* The arrays lh->include_dirs and lh->file_names are |
16921 | 0-based, but the directory and file name numbers in | |
16922 | the statement program are 1-based. */ | |
debd256d | 16923 | struct file_entry *fe; |
d521ce57 | 16924 | const char *dir = NULL; |
a738430d | 16925 | |
debd256d JB |
16926 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
16927 | line_ptr += bytes_read; | |
59205f5a | 16928 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
16929 | dwarf2_debug_line_missing_file_complaint (); |
16930 | else | |
16931 | { | |
16932 | fe = &lh->file_names[file - 1]; | |
16933 | if (fe->dir_index) | |
16934 | dir = lh->include_dirs[fe->dir_index - 1]; | |
16935 | if (!decode_for_pst_p) | |
16936 | { | |
16937 | last_subfile = current_subfile; | |
16938 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
16939 | } | |
16940 | } | |
debd256d | 16941 | } |
c906108c SS |
16942 | break; |
16943 | case DW_LNS_set_column: | |
16944 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16945 | line_ptr += bytes_read; | |
16946 | break; | |
16947 | case DW_LNS_negate_stmt: | |
16948 | is_stmt = (!is_stmt); | |
16949 | break; | |
16950 | case DW_LNS_set_basic_block: | |
16951 | basic_block = 1; | |
16952 | break; | |
c2c6d25f JM |
16953 | /* Add to the address register of the state machine the |
16954 | address increment value corresponding to special opcode | |
a738430d MK |
16955 | 255. I.e., this value is scaled by the minimum |
16956 | instruction length since special opcode 255 would have | |
b021a221 | 16957 | scaled the increment. */ |
c906108c | 16958 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
16959 | { |
16960 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
16961 | ||
16962 | address += (((op_index + adjust) | |
16963 | / lh->maximum_ops_per_instruction) | |
16964 | * lh->minimum_instruction_length); | |
16965 | op_index = ((op_index + adjust) | |
16966 | % lh->maximum_ops_per_instruction); | |
16967 | } | |
c906108c SS |
16968 | break; |
16969 | case DW_LNS_fixed_advance_pc: | |
16970 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 16971 | op_index = 0; |
c906108c SS |
16972 | line_ptr += 2; |
16973 | break; | |
9aa1fe7e | 16974 | default: |
a738430d MK |
16975 | { |
16976 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 16977 | int i; |
a738430d | 16978 | |
debd256d | 16979 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
16980 | { |
16981 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16982 | line_ptr += bytes_read; | |
16983 | } | |
16984 | } | |
c906108c SS |
16985 | } |
16986 | } | |
59205f5a JB |
16987 | if (lh->num_file_names < file || file == 0) |
16988 | dwarf2_debug_line_missing_file_complaint (); | |
16989 | else | |
16990 | { | |
16991 | lh->file_names[file - 1].included_p = 1; | |
16992 | if (!decode_for_pst_p) | |
fbf65064 UW |
16993 | { |
16994 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 16995 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 16996 | } |
59205f5a | 16997 | } |
c906108c | 16998 | } |
f3f5162e DE |
16999 | } |
17000 | ||
17001 | /* Decode the Line Number Program (LNP) for the given line_header | |
17002 | structure and CU. The actual information extracted and the type | |
17003 | of structures created from the LNP depends on the value of PST. | |
17004 | ||
17005 | 1. If PST is NULL, then this procedure uses the data from the program | |
17006 | to create all necessary symbol tables, and their linetables. | |
17007 | ||
17008 | 2. If PST is not NULL, this procedure reads the program to determine | |
17009 | the list of files included by the unit represented by PST, and | |
17010 | builds all the associated partial symbol tables. | |
17011 | ||
17012 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17013 | It is used for relative paths in the line table. | |
17014 | NOTE: When processing partial symtabs (pst != NULL), | |
17015 | comp_dir == pst->dirname. | |
17016 | ||
17017 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
17018 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
17019 | symtab we don't use it in the name of the psymtabs we create. | |
17020 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
17021 | A good testcase for this is mb-inline.exp. */ | |
17022 | ||
17023 | static void | |
17024 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
17025 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
17026 | int want_line_info) | |
17027 | { | |
17028 | struct objfile *objfile = cu->objfile; | |
17029 | const int decode_for_pst_p = (pst != NULL); | |
17030 | struct subfile *first_subfile = current_subfile; | |
17031 | ||
17032 | if (want_line_info) | |
17033 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
17034 | |
17035 | if (decode_for_pst_p) | |
17036 | { | |
17037 | int file_index; | |
17038 | ||
17039 | /* Now that we're done scanning the Line Header Program, we can | |
17040 | create the psymtab of each included file. */ | |
17041 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
17042 | if (lh->file_names[file_index].included_p == 1) | |
17043 | { | |
d521ce57 | 17044 | const char *include_name = |
c6da4cef DE |
17045 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
17046 | if (include_name != NULL) | |
aaa75496 JB |
17047 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
17048 | } | |
17049 | } | |
cb1df416 DJ |
17050 | else |
17051 | { | |
17052 | /* Make sure a symtab is created for every file, even files | |
17053 | which contain only variables (i.e. no code with associated | |
17054 | line numbers). */ | |
cb1df416 | 17055 | int i; |
cb1df416 DJ |
17056 | |
17057 | for (i = 0; i < lh->num_file_names; i++) | |
17058 | { | |
d521ce57 | 17059 | const char *dir = NULL; |
f3f5162e | 17060 | struct file_entry *fe; |
9a619af0 | 17061 | |
cb1df416 DJ |
17062 | fe = &lh->file_names[i]; |
17063 | if (fe->dir_index) | |
17064 | dir = lh->include_dirs[fe->dir_index - 1]; | |
17065 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
17066 | ||
17067 | /* Skip the main file; we don't need it, and it must be | |
17068 | allocated last, so that it will show up before the | |
17069 | non-primary symtabs in the objfile's symtab list. */ | |
17070 | if (current_subfile == first_subfile) | |
17071 | continue; | |
17072 | ||
17073 | if (current_subfile->symtab == NULL) | |
17074 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 17075 | objfile); |
cb1df416 DJ |
17076 | fe->symtab = current_subfile->symtab; |
17077 | } | |
17078 | } | |
c906108c SS |
17079 | } |
17080 | ||
17081 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
17082 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
17083 | or NULL if not known. COMP_DIR is the compilation directory for the |
17084 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
17085 | This routine tries to keep line numbers from identical absolute and |
17086 | relative file names in a common subfile. | |
17087 | ||
17088 | Using the `list' example from the GDB testsuite, which resides in | |
17089 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
17090 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
17091 | ||
c5aa993b JM |
17092 | DW_AT_name: /srcdir/list0.c |
17093 | DW_AT_comp_dir: /compdir | |
357e46e7 | 17094 | files.files[0].name: list0.h |
c5aa993b | 17095 | files.files[0].dir: /srcdir |
357e46e7 | 17096 | files.files[1].name: list0.c |
c5aa993b | 17097 | files.files[1].dir: /srcdir |
c906108c SS |
17098 | |
17099 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
17100 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
17101 | start_subfile will ensure that this happens provided that we pass the | |
17102 | concatenation of files.files[1].dir and files.files[1].name as the | |
17103 | subfile's name. */ | |
c906108c SS |
17104 | |
17105 | static void | |
d521ce57 | 17106 | dwarf2_start_subfile (const char *filename, const char *dirname, |
3e43a32a | 17107 | const char *comp_dir) |
c906108c | 17108 | { |
d521ce57 | 17109 | char *copy = NULL; |
4f1520fb FR |
17110 | |
17111 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
17112 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
17113 | second argument to start_subfile. To be consistent, we do the | |
17114 | same here. In order not to lose the line information directory, | |
17115 | we concatenate it to the filename when it makes sense. | |
17116 | Note that the Dwarf3 standard says (speaking of filenames in line | |
17117 | information): ``The directory index is ignored for file names | |
17118 | that represent full path names''. Thus ignoring dirname in the | |
17119 | `else' branch below isn't an issue. */ | |
c906108c | 17120 | |
d5166ae1 | 17121 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
17122 | { |
17123 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
17124 | filename = copy; | |
17125 | } | |
c906108c | 17126 | |
d521ce57 | 17127 | start_subfile (filename, comp_dir); |
4f1520fb | 17128 | |
d521ce57 TT |
17129 | if (copy != NULL) |
17130 | xfree (copy); | |
c906108c SS |
17131 | } |
17132 | ||
f4dc4d17 DE |
17133 | /* Start a symtab for DWARF. |
17134 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
17135 | ||
17136 | static void | |
17137 | dwarf2_start_symtab (struct dwarf2_cu *cu, | |
15d034d0 | 17138 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 DE |
17139 | { |
17140 | start_symtab (name, comp_dir, low_pc); | |
17141 | record_debugformat ("DWARF 2"); | |
17142 | record_producer (cu->producer); | |
17143 | ||
17144 | /* We assume that we're processing GCC output. */ | |
17145 | processing_gcc_compilation = 2; | |
17146 | ||
4d4ec4e5 | 17147 | cu->processing_has_namespace_info = 0; |
f4dc4d17 DE |
17148 | } |
17149 | ||
4c2df51b DJ |
17150 | static void |
17151 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 17152 | struct dwarf2_cu *cu) |
4c2df51b | 17153 | { |
e7c27a73 DJ |
17154 | struct objfile *objfile = cu->objfile; |
17155 | struct comp_unit_head *cu_header = &cu->header; | |
17156 | ||
4c2df51b DJ |
17157 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
17158 | code here to turn a symbol with DW_AT_external and a | |
17159 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
17160 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
17161 | with some versions of binutils) where shared libraries could have | |
17162 | relocations against symbols in their debug information - the | |
17163 | minimal symbol would have the right address, but the debug info | |
17164 | would not. It's no longer necessary, because we will explicitly | |
17165 | apply relocations when we read in the debug information now. */ | |
17166 | ||
17167 | /* A DW_AT_location attribute with no contents indicates that a | |
17168 | variable has been optimized away. */ | |
17169 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
17170 | { | |
f1e6e072 | 17171 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
17172 | return; |
17173 | } | |
17174 | ||
17175 | /* Handle one degenerate form of location expression specially, to | |
17176 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
17177 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
17178 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
17179 | |
17180 | if (attr_form_is_block (attr) | |
3019eac3 DE |
17181 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
17182 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
17183 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
17184 | && (DW_BLOCK (attr)->size | |
17185 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 17186 | { |
891d2f0b | 17187 | unsigned int dummy; |
4c2df51b | 17188 | |
3019eac3 DE |
17189 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
17190 | SYMBOL_VALUE_ADDRESS (sym) = | |
17191 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
17192 | else | |
17193 | SYMBOL_VALUE_ADDRESS (sym) = | |
17194 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 17195 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
17196 | fixup_symbol_section (sym, objfile); |
17197 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
17198 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
17199 | return; |
17200 | } | |
17201 | ||
17202 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
17203 | expression evaluator, and use LOC_COMPUTED only when necessary | |
17204 | (i.e. when the value of a register or memory location is | |
17205 | referenced, or a thread-local block, etc.). Then again, it might | |
17206 | not be worthwhile. I'm assuming that it isn't unless performance | |
17207 | or memory numbers show me otherwise. */ | |
17208 | ||
f1e6e072 | 17209 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 17210 | |
f1e6e072 | 17211 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 17212 | cu->has_loclist = 1; |
4c2df51b DJ |
17213 | } |
17214 | ||
c906108c SS |
17215 | /* Given a pointer to a DWARF information entry, figure out if we need |
17216 | to make a symbol table entry for it, and if so, create a new entry | |
17217 | and return a pointer to it. | |
17218 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
17219 | used the passed type. |
17220 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
17221 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
17222 | |
17223 | static struct symbol * | |
34eaf542 TT |
17224 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
17225 | struct symbol *space) | |
c906108c | 17226 | { |
e7c27a73 | 17227 | struct objfile *objfile = cu->objfile; |
c906108c | 17228 | struct symbol *sym = NULL; |
15d034d0 | 17229 | const char *name; |
c906108c SS |
17230 | struct attribute *attr = NULL; |
17231 | struct attribute *attr2 = NULL; | |
e142c38c | 17232 | CORE_ADDR baseaddr; |
e37fd15a SW |
17233 | struct pending **list_to_add = NULL; |
17234 | ||
edb3359d | 17235 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
17236 | |
17237 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 17238 | |
94af9270 | 17239 | name = dwarf2_name (die, cu); |
c906108c SS |
17240 | if (name) |
17241 | { | |
94af9270 | 17242 | const char *linkagename; |
34eaf542 | 17243 | int suppress_add = 0; |
94af9270 | 17244 | |
34eaf542 TT |
17245 | if (space) |
17246 | sym = space; | |
17247 | else | |
e623cf5d | 17248 | sym = allocate_symbol (objfile); |
c906108c | 17249 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
17250 | |
17251 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 17252 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
17253 | linkagename = dwarf2_physname (name, die, cu); |
17254 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 17255 | |
f55ee35c JK |
17256 | /* Fortran does not have mangling standard and the mangling does differ |
17257 | between gfortran, iFort etc. */ | |
17258 | if (cu->language == language_fortran | |
b250c185 | 17259 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 17260 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 17261 | dwarf2_full_name (name, die, cu), |
29df156d | 17262 | NULL); |
f55ee35c | 17263 | |
c906108c | 17264 | /* Default assumptions. |
c5aa993b | 17265 | Use the passed type or decode it from the die. */ |
176620f1 | 17266 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 17267 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
17268 | if (type != NULL) |
17269 | SYMBOL_TYPE (sym) = type; | |
17270 | else | |
e7c27a73 | 17271 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
17272 | attr = dwarf2_attr (die, |
17273 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
17274 | cu); | |
c906108c SS |
17275 | if (attr) |
17276 | { | |
17277 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
17278 | } | |
cb1df416 | 17279 | |
edb3359d DJ |
17280 | attr = dwarf2_attr (die, |
17281 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
17282 | cu); | |
cb1df416 DJ |
17283 | if (attr) |
17284 | { | |
17285 | int file_index = DW_UNSND (attr); | |
9a619af0 | 17286 | |
cb1df416 DJ |
17287 | if (cu->line_header == NULL |
17288 | || file_index > cu->line_header->num_file_names) | |
17289 | complaint (&symfile_complaints, | |
17290 | _("file index out of range")); | |
1c3d648d | 17291 | else if (file_index > 0) |
cb1df416 DJ |
17292 | { |
17293 | struct file_entry *fe; | |
9a619af0 | 17294 | |
cb1df416 DJ |
17295 | fe = &cu->line_header->file_names[file_index - 1]; |
17296 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
17297 | } | |
17298 | } | |
17299 | ||
c906108c SS |
17300 | switch (die->tag) |
17301 | { | |
17302 | case DW_TAG_label: | |
e142c38c | 17303 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
17304 | if (attr) |
17305 | { | |
17306 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
17307 | } | |
0f5238ed TT |
17308 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
17309 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 17310 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 17311 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
17312 | break; |
17313 | case DW_TAG_subprogram: | |
17314 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
17315 | finish_block. */ | |
f1e6e072 | 17316 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 17317 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
17318 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
17319 | || cu->language == language_ada) | |
c906108c | 17320 | { |
2cfa0c8d JB |
17321 | /* Subprograms marked external are stored as a global symbol. |
17322 | Ada subprograms, whether marked external or not, are always | |
17323 | stored as a global symbol, because we want to be able to | |
17324 | access them globally. For instance, we want to be able | |
17325 | to break on a nested subprogram without having to | |
17326 | specify the context. */ | |
e37fd15a | 17327 | list_to_add = &global_symbols; |
c906108c SS |
17328 | } |
17329 | else | |
17330 | { | |
e37fd15a | 17331 | list_to_add = cu->list_in_scope; |
c906108c SS |
17332 | } |
17333 | break; | |
edb3359d DJ |
17334 | case DW_TAG_inlined_subroutine: |
17335 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
17336 | finish_block. */ | |
f1e6e072 | 17337 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 17338 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 17339 | list_to_add = cu->list_in_scope; |
edb3359d | 17340 | break; |
34eaf542 TT |
17341 | case DW_TAG_template_value_param: |
17342 | suppress_add = 1; | |
17343 | /* Fall through. */ | |
72929c62 | 17344 | case DW_TAG_constant: |
c906108c | 17345 | case DW_TAG_variable: |
254e6b9e | 17346 | case DW_TAG_member: |
0963b4bd MS |
17347 | /* Compilation with minimal debug info may result in |
17348 | variables with missing type entries. Change the | |
17349 | misleading `void' type to something sensible. */ | |
c906108c | 17350 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 17351 | SYMBOL_TYPE (sym) |
46bf5051 | 17352 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 17353 | |
e142c38c | 17354 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
17355 | /* In the case of DW_TAG_member, we should only be called for |
17356 | static const members. */ | |
17357 | if (die->tag == DW_TAG_member) | |
17358 | { | |
3863f96c DE |
17359 | /* dwarf2_add_field uses die_is_declaration, |
17360 | so we do the same. */ | |
254e6b9e DE |
17361 | gdb_assert (die_is_declaration (die, cu)); |
17362 | gdb_assert (attr); | |
17363 | } | |
c906108c SS |
17364 | if (attr) |
17365 | { | |
e7c27a73 | 17366 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 17367 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 17368 | if (!suppress_add) |
34eaf542 TT |
17369 | { |
17370 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 17371 | list_to_add = &global_symbols; |
34eaf542 | 17372 | else |
e37fd15a | 17373 | list_to_add = cu->list_in_scope; |
34eaf542 | 17374 | } |
c906108c SS |
17375 | break; |
17376 | } | |
e142c38c | 17377 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
17378 | if (attr) |
17379 | { | |
e7c27a73 | 17380 | var_decode_location (attr, sym, cu); |
e142c38c | 17381 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
17382 | |
17383 | /* Fortran explicitly imports any global symbols to the local | |
17384 | scope by DW_TAG_common_block. */ | |
17385 | if (cu->language == language_fortran && die->parent | |
17386 | && die->parent->tag == DW_TAG_common_block) | |
17387 | attr2 = NULL; | |
17388 | ||
caac4577 JG |
17389 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
17390 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
17391 | && !dwarf2_per_objfile->has_section_at_zero) | |
17392 | { | |
17393 | /* When a static variable is eliminated by the linker, | |
17394 | the corresponding debug information is not stripped | |
17395 | out, but the variable address is set to null; | |
17396 | do not add such variables into symbol table. */ | |
17397 | } | |
17398 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 17399 | { |
f55ee35c JK |
17400 | /* Workaround gfortran PR debug/40040 - it uses |
17401 | DW_AT_location for variables in -fPIC libraries which may | |
17402 | get overriden by other libraries/executable and get | |
17403 | a different address. Resolve it by the minimal symbol | |
17404 | which may come from inferior's executable using copy | |
17405 | relocation. Make this workaround only for gfortran as for | |
17406 | other compilers GDB cannot guess the minimal symbol | |
17407 | Fortran mangling kind. */ | |
17408 | if (cu->language == language_fortran && die->parent | |
17409 | && die->parent->tag == DW_TAG_module | |
17410 | && cu->producer | |
17411 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
f1e6e072 | 17412 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 17413 | |
1c809c68 TT |
17414 | /* A variable with DW_AT_external is never static, |
17415 | but it may be block-scoped. */ | |
17416 | list_to_add = (cu->list_in_scope == &file_symbols | |
17417 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 17418 | } |
c906108c | 17419 | else |
e37fd15a | 17420 | list_to_add = cu->list_in_scope; |
c906108c SS |
17421 | } |
17422 | else | |
17423 | { | |
17424 | /* We do not know the address of this symbol. | |
c5aa993b JM |
17425 | If it is an external symbol and we have type information |
17426 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
17427 | The address of the variable will then be determined from | |
17428 | the minimal symbol table whenever the variable is | |
17429 | referenced. */ | |
e142c38c | 17430 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
17431 | |
17432 | /* Fortran explicitly imports any global symbols to the local | |
17433 | scope by DW_TAG_common_block. */ | |
17434 | if (cu->language == language_fortran && die->parent | |
17435 | && die->parent->tag == DW_TAG_common_block) | |
17436 | { | |
17437 | /* SYMBOL_CLASS doesn't matter here because | |
17438 | read_common_block is going to reset it. */ | |
17439 | if (!suppress_add) | |
17440 | list_to_add = cu->list_in_scope; | |
17441 | } | |
17442 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
17443 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 17444 | { |
0fe7935b DJ |
17445 | /* A variable with DW_AT_external is never static, but it |
17446 | may be block-scoped. */ | |
17447 | list_to_add = (cu->list_in_scope == &file_symbols | |
17448 | ? &global_symbols : cu->list_in_scope); | |
17449 | ||
f1e6e072 | 17450 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 17451 | } |
442ddf59 JK |
17452 | else if (!die_is_declaration (die, cu)) |
17453 | { | |
17454 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
17455 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
17456 | if (!suppress_add) |
17457 | list_to_add = cu->list_in_scope; | |
442ddf59 | 17458 | } |
c906108c SS |
17459 | } |
17460 | break; | |
17461 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
17462 | /* If we are inside a function, mark this as an argument. If |
17463 | not, we might be looking at an argument to an inlined function | |
17464 | when we do not have enough information to show inlined frames; | |
17465 | pretend it's a local variable in that case so that the user can | |
17466 | still see it. */ | |
17467 | if (context_stack_depth > 0 | |
17468 | && context_stack[context_stack_depth - 1].name != NULL) | |
17469 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 17470 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
17471 | if (attr) |
17472 | { | |
e7c27a73 | 17473 | var_decode_location (attr, sym, cu); |
c906108c | 17474 | } |
e142c38c | 17475 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
17476 | if (attr) |
17477 | { | |
e7c27a73 | 17478 | dwarf2_const_value (attr, sym, cu); |
c906108c | 17479 | } |
f346a30d | 17480 | |
e37fd15a | 17481 | list_to_add = cu->list_in_scope; |
c906108c SS |
17482 | break; |
17483 | case DW_TAG_unspecified_parameters: | |
17484 | /* From varargs functions; gdb doesn't seem to have any | |
17485 | interest in this information, so just ignore it for now. | |
17486 | (FIXME?) */ | |
17487 | break; | |
34eaf542 TT |
17488 | case DW_TAG_template_type_param: |
17489 | suppress_add = 1; | |
17490 | /* Fall through. */ | |
c906108c | 17491 | case DW_TAG_class_type: |
680b30c7 | 17492 | case DW_TAG_interface_type: |
c906108c SS |
17493 | case DW_TAG_structure_type: |
17494 | case DW_TAG_union_type: | |
72019c9c | 17495 | case DW_TAG_set_type: |
c906108c | 17496 | case DW_TAG_enumeration_type: |
f1e6e072 | 17497 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 17498 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 17499 | |
63d06c5c | 17500 | { |
987504bb | 17501 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
17502 | really ever be static objects: otherwise, if you try |
17503 | to, say, break of a class's method and you're in a file | |
17504 | which doesn't mention that class, it won't work unless | |
17505 | the check for all static symbols in lookup_symbol_aux | |
17506 | saves you. See the OtherFileClass tests in | |
17507 | gdb.c++/namespace.exp. */ | |
17508 | ||
e37fd15a | 17509 | if (!suppress_add) |
34eaf542 | 17510 | { |
34eaf542 TT |
17511 | list_to_add = (cu->list_in_scope == &file_symbols |
17512 | && (cu->language == language_cplus | |
17513 | || cu->language == language_java) | |
17514 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 17515 | |
64382290 TT |
17516 | /* The semantics of C++ state that "struct foo { |
17517 | ... }" also defines a typedef for "foo". A Java | |
17518 | class declaration also defines a typedef for the | |
17519 | class. */ | |
17520 | if (cu->language == language_cplus | |
17521 | || cu->language == language_java | |
17522 | || cu->language == language_ada) | |
17523 | { | |
17524 | /* The symbol's name is already allocated along | |
17525 | with this objfile, so we don't need to | |
17526 | duplicate it for the type. */ | |
17527 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
17528 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
17529 | } | |
63d06c5c DC |
17530 | } |
17531 | } | |
c906108c SS |
17532 | break; |
17533 | case DW_TAG_typedef: | |
f1e6e072 | 17534 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 17535 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 17536 | list_to_add = cu->list_in_scope; |
63d06c5c | 17537 | break; |
c906108c | 17538 | case DW_TAG_base_type: |
a02abb62 | 17539 | case DW_TAG_subrange_type: |
f1e6e072 | 17540 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 17541 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 17542 | list_to_add = cu->list_in_scope; |
c906108c SS |
17543 | break; |
17544 | case DW_TAG_enumerator: | |
e142c38c | 17545 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
17546 | if (attr) |
17547 | { | |
e7c27a73 | 17548 | dwarf2_const_value (attr, sym, cu); |
c906108c | 17549 | } |
63d06c5c DC |
17550 | { |
17551 | /* NOTE: carlton/2003-11-10: See comment above in the | |
17552 | DW_TAG_class_type, etc. block. */ | |
17553 | ||
e142c38c | 17554 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
17555 | && (cu->language == language_cplus |
17556 | || cu->language == language_java) | |
e142c38c | 17557 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 17558 | } |
c906108c | 17559 | break; |
5c4e30ca | 17560 | case DW_TAG_namespace: |
f1e6e072 | 17561 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 17562 | list_to_add = &global_symbols; |
5c4e30ca | 17563 | break; |
4357ac6c | 17564 | case DW_TAG_common_block: |
f1e6e072 | 17565 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
17566 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
17567 | add_symbol_to_list (sym, cu->list_in_scope); | |
17568 | break; | |
c906108c SS |
17569 | default: |
17570 | /* Not a tag we recognize. Hopefully we aren't processing | |
17571 | trash data, but since we must specifically ignore things | |
17572 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 17573 | this point. */ |
e2e0b3e5 | 17574 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 17575 | dwarf_tag_name (die->tag)); |
c906108c SS |
17576 | break; |
17577 | } | |
df8a16a1 | 17578 | |
e37fd15a SW |
17579 | if (suppress_add) |
17580 | { | |
17581 | sym->hash_next = objfile->template_symbols; | |
17582 | objfile->template_symbols = sym; | |
17583 | list_to_add = NULL; | |
17584 | } | |
17585 | ||
17586 | if (list_to_add != NULL) | |
17587 | add_symbol_to_list (sym, list_to_add); | |
17588 | ||
df8a16a1 DJ |
17589 | /* For the benefit of old versions of GCC, check for anonymous |
17590 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 17591 | if (!cu->processing_has_namespace_info |
94af9270 | 17592 | && cu->language == language_cplus) |
a10964d1 | 17593 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
17594 | } |
17595 | return (sym); | |
17596 | } | |
17597 | ||
34eaf542 TT |
17598 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
17599 | ||
17600 | static struct symbol * | |
17601 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
17602 | { | |
17603 | return new_symbol_full (die, type, cu, NULL); | |
17604 | } | |
17605 | ||
98bfdba5 PA |
17606 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
17607 | zero-extend it as appropriate for the symbol's type. The DWARF | |
17608 | standard (v4) is not entirely clear about the meaning of using | |
17609 | DW_FORM_dataN for a constant with a signed type, where the type is | |
17610 | wider than the data. The conclusion of a discussion on the DWARF | |
17611 | list was that this is unspecified. We choose to always zero-extend | |
17612 | because that is the interpretation long in use by GCC. */ | |
c906108c | 17613 | |
98bfdba5 | 17614 | static gdb_byte * |
ff39bb5e | 17615 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 17616 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 17617 | { |
e7c27a73 | 17618 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
17619 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
17620 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
17621 | LONGEST l = DW_UNSND (attr); |
17622 | ||
17623 | if (bits < sizeof (*value) * 8) | |
17624 | { | |
17625 | l &= ((LONGEST) 1 << bits) - 1; | |
17626 | *value = l; | |
17627 | } | |
17628 | else if (bits == sizeof (*value) * 8) | |
17629 | *value = l; | |
17630 | else | |
17631 | { | |
17632 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
17633 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
17634 | return bytes; | |
17635 | } | |
17636 | ||
17637 | return NULL; | |
17638 | } | |
17639 | ||
17640 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
17641 | the value does not fit in *VALUE, set *BYTES - either already | |
17642 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
17643 | or, set *BATON, if we translated the constant to a location | |
17644 | expression. */ | |
17645 | ||
17646 | static void | |
ff39bb5e | 17647 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
17648 | const char *name, struct obstack *obstack, |
17649 | struct dwarf2_cu *cu, | |
d521ce57 | 17650 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
17651 | struct dwarf2_locexpr_baton **baton) |
17652 | { | |
17653 | struct objfile *objfile = cu->objfile; | |
17654 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 17655 | struct dwarf_block *blk; |
98bfdba5 PA |
17656 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
17657 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
17658 | ||
17659 | *value = 0; | |
17660 | *bytes = NULL; | |
17661 | *baton = NULL; | |
c906108c SS |
17662 | |
17663 | switch (attr->form) | |
17664 | { | |
17665 | case DW_FORM_addr: | |
3019eac3 | 17666 | case DW_FORM_GNU_addr_index: |
ac56253d | 17667 | { |
ac56253d TT |
17668 | gdb_byte *data; |
17669 | ||
98bfdba5 PA |
17670 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
17671 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 17672 | cu_header->addr_size, |
98bfdba5 | 17673 | TYPE_LENGTH (type)); |
ac56253d TT |
17674 | /* Symbols of this form are reasonably rare, so we just |
17675 | piggyback on the existing location code rather than writing | |
17676 | a new implementation of symbol_computed_ops. */ | |
7919a973 | 17677 | *baton = obstack_alloc (obstack, sizeof (struct dwarf2_locexpr_baton)); |
98bfdba5 PA |
17678 | (*baton)->per_cu = cu->per_cu; |
17679 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 17680 | |
98bfdba5 | 17681 | (*baton)->size = 2 + cu_header->addr_size; |
7919a973 | 17682 | data = obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 17683 | (*baton)->data = data; |
ac56253d TT |
17684 | |
17685 | data[0] = DW_OP_addr; | |
17686 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
17687 | byte_order, DW_ADDR (attr)); | |
17688 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 17689 | } |
c906108c | 17690 | break; |
4ac36638 | 17691 | case DW_FORM_string: |
93b5768b | 17692 | case DW_FORM_strp: |
3019eac3 | 17693 | case DW_FORM_GNU_str_index: |
36586728 | 17694 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
17695 | /* DW_STRING is already allocated on the objfile obstack, point |
17696 | directly to it. */ | |
d521ce57 | 17697 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 17698 | break; |
c906108c SS |
17699 | case DW_FORM_block1: |
17700 | case DW_FORM_block2: | |
17701 | case DW_FORM_block4: | |
17702 | case DW_FORM_block: | |
2dc7f7b3 | 17703 | case DW_FORM_exprloc: |
c906108c | 17704 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
17705 | if (TYPE_LENGTH (type) != blk->size) |
17706 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
17707 | TYPE_LENGTH (type)); | |
17708 | *bytes = blk->data; | |
c906108c | 17709 | break; |
2df3850c JM |
17710 | |
17711 | /* The DW_AT_const_value attributes are supposed to carry the | |
17712 | symbol's value "represented as it would be on the target | |
17713 | architecture." By the time we get here, it's already been | |
17714 | converted to host endianness, so we just need to sign- or | |
17715 | zero-extend it as appropriate. */ | |
17716 | case DW_FORM_data1: | |
3aef2284 | 17717 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 17718 | break; |
c906108c | 17719 | case DW_FORM_data2: |
3aef2284 | 17720 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 17721 | break; |
c906108c | 17722 | case DW_FORM_data4: |
3aef2284 | 17723 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 17724 | break; |
c906108c | 17725 | case DW_FORM_data8: |
3aef2284 | 17726 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
17727 | break; |
17728 | ||
c906108c | 17729 | case DW_FORM_sdata: |
98bfdba5 | 17730 | *value = DW_SND (attr); |
2df3850c JM |
17731 | break; |
17732 | ||
c906108c | 17733 | case DW_FORM_udata: |
98bfdba5 | 17734 | *value = DW_UNSND (attr); |
c906108c | 17735 | break; |
2df3850c | 17736 | |
c906108c | 17737 | default: |
4d3c2250 | 17738 | complaint (&symfile_complaints, |
e2e0b3e5 | 17739 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 17740 | dwarf_form_name (attr->form)); |
98bfdba5 | 17741 | *value = 0; |
c906108c SS |
17742 | break; |
17743 | } | |
17744 | } | |
17745 | ||
2df3850c | 17746 | |
98bfdba5 PA |
17747 | /* Copy constant value from an attribute to a symbol. */ |
17748 | ||
2df3850c | 17749 | static void |
ff39bb5e | 17750 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 17751 | struct dwarf2_cu *cu) |
2df3850c | 17752 | { |
98bfdba5 PA |
17753 | struct objfile *objfile = cu->objfile; |
17754 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 17755 | LONGEST value; |
d521ce57 | 17756 | const gdb_byte *bytes; |
98bfdba5 | 17757 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 17758 | |
98bfdba5 PA |
17759 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
17760 | SYMBOL_PRINT_NAME (sym), | |
17761 | &objfile->objfile_obstack, cu, | |
17762 | &value, &bytes, &baton); | |
2df3850c | 17763 | |
98bfdba5 PA |
17764 | if (baton != NULL) |
17765 | { | |
98bfdba5 | 17766 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17767 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
17768 | } |
17769 | else if (bytes != NULL) | |
17770 | { | |
17771 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 17772 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
17773 | } |
17774 | else | |
17775 | { | |
17776 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 17777 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 17778 | } |
2df3850c JM |
17779 | } |
17780 | ||
c906108c SS |
17781 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
17782 | ||
17783 | static struct type * | |
e7c27a73 | 17784 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17785 | { |
c906108c | 17786 | struct attribute *type_attr; |
c906108c | 17787 | |
e142c38c | 17788 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
17789 | if (!type_attr) |
17790 | { | |
17791 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 17792 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 17793 | } |
348e048f | 17794 | |
673bfd45 | 17795 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
17796 | } |
17797 | ||
b4ba55a1 JB |
17798 | /* True iff CU's producer generates GNAT Ada auxiliary information |
17799 | that allows to find parallel types through that information instead | |
17800 | of having to do expensive parallel lookups by type name. */ | |
17801 | ||
17802 | static int | |
17803 | need_gnat_info (struct dwarf2_cu *cu) | |
17804 | { | |
17805 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
17806 | of GNAT produces this auxiliary information, without any indication | |
17807 | that it is produced. Part of enhancing the FSF version of GNAT | |
17808 | to produce that information will be to put in place an indicator | |
17809 | that we can use in order to determine whether the descriptive type | |
17810 | info is available or not. One suggestion that has been made is | |
17811 | to use a new attribute, attached to the CU die. For now, assume | |
17812 | that the descriptive type info is not available. */ | |
17813 | return 0; | |
17814 | } | |
17815 | ||
b4ba55a1 JB |
17816 | /* Return the auxiliary type of the die in question using its |
17817 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
17818 | attribute is not present. */ | |
17819 | ||
17820 | static struct type * | |
17821 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
17822 | { | |
b4ba55a1 | 17823 | struct attribute *type_attr; |
b4ba55a1 JB |
17824 | |
17825 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
17826 | if (!type_attr) | |
17827 | return NULL; | |
17828 | ||
673bfd45 | 17829 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
17830 | } |
17831 | ||
17832 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
17833 | descriptive type accordingly. */ | |
17834 | ||
17835 | static void | |
17836 | set_descriptive_type (struct type *type, struct die_info *die, | |
17837 | struct dwarf2_cu *cu) | |
17838 | { | |
17839 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
17840 | ||
17841 | if (descriptive_type) | |
17842 | { | |
17843 | ALLOCATE_GNAT_AUX_TYPE (type); | |
17844 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
17845 | } | |
17846 | } | |
17847 | ||
c906108c SS |
17848 | /* Return the containing type of the die in question using its |
17849 | DW_AT_containing_type attribute. */ | |
17850 | ||
17851 | static struct type * | |
e7c27a73 | 17852 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17853 | { |
c906108c | 17854 | struct attribute *type_attr; |
c906108c | 17855 | |
e142c38c | 17856 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
17857 | if (!type_attr) |
17858 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 17859 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 17860 | |
673bfd45 | 17861 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
17862 | } |
17863 | ||
ac9ec31b DE |
17864 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
17865 | ||
17866 | static struct type * | |
17867 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
17868 | { | |
17869 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
17870 | char *message, *saved; | |
17871 | ||
17872 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 17873 | objfile_name (objfile), |
ac9ec31b DE |
17874 | cu->header.offset.sect_off, |
17875 | die->offset.sect_off); | |
17876 | saved = obstack_copy0 (&objfile->objfile_obstack, | |
17877 | message, strlen (message)); | |
17878 | xfree (message); | |
17879 | ||
17880 | return init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); | |
17881 | } | |
17882 | ||
673bfd45 | 17883 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
17884 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
17885 | DW_AT_containing_type. | |
673bfd45 DE |
17886 | If there is no type substitute an error marker. */ |
17887 | ||
c906108c | 17888 | static struct type * |
ff39bb5e | 17889 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 17890 | struct dwarf2_cu *cu) |
c906108c | 17891 | { |
bb5ed363 | 17892 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
17893 | struct type *this_type; |
17894 | ||
ac9ec31b DE |
17895 | gdb_assert (attr->name == DW_AT_type |
17896 | || attr->name == DW_AT_GNAT_descriptive_type | |
17897 | || attr->name == DW_AT_containing_type); | |
17898 | ||
673bfd45 DE |
17899 | /* First see if we have it cached. */ |
17900 | ||
36586728 TT |
17901 | if (attr->form == DW_FORM_GNU_ref_alt) |
17902 | { | |
17903 | struct dwarf2_per_cu_data *per_cu; | |
17904 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
17905 | ||
17906 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
17907 | this_type = get_die_type_at_offset (offset, per_cu); | |
17908 | } | |
7771576e | 17909 | else if (attr_form_is_ref (attr)) |
673bfd45 | 17910 | { |
b64f50a1 | 17911 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
17912 | |
17913 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
17914 | } | |
55f1336d | 17915 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 17916 | { |
ac9ec31b | 17917 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 17918 | |
ac9ec31b | 17919 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
17920 | } |
17921 | else | |
17922 | { | |
ac9ec31b DE |
17923 | complaint (&symfile_complaints, |
17924 | _("Dwarf Error: Bad type attribute %s in DIE" | |
17925 | " at 0x%x [in module %s]"), | |
17926 | dwarf_attr_name (attr->name), die->offset.sect_off, | |
4262abfb | 17927 | objfile_name (objfile)); |
ac9ec31b | 17928 | return build_error_marker_type (cu, die); |
673bfd45 DE |
17929 | } |
17930 | ||
17931 | /* If not cached we need to read it in. */ | |
17932 | ||
17933 | if (this_type == NULL) | |
17934 | { | |
ac9ec31b | 17935 | struct die_info *type_die = NULL; |
673bfd45 DE |
17936 | struct dwarf2_cu *type_cu = cu; |
17937 | ||
7771576e | 17938 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
17939 | type_die = follow_die_ref (die, attr, &type_cu); |
17940 | if (type_die == NULL) | |
17941 | return build_error_marker_type (cu, die); | |
17942 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
17943 | from an inter-CU reference and the type's CU got expanded before |
17944 | ours. */ | |
ac9ec31b | 17945 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
17946 | } |
17947 | ||
17948 | /* If we still don't have a type use an error marker. */ | |
17949 | ||
17950 | if (this_type == NULL) | |
ac9ec31b | 17951 | return build_error_marker_type (cu, die); |
673bfd45 | 17952 | |
f792889a | 17953 | return this_type; |
c906108c SS |
17954 | } |
17955 | ||
673bfd45 DE |
17956 | /* Return the type in DIE, CU. |
17957 | Returns NULL for invalid types. | |
17958 | ||
02142a6c | 17959 | This first does a lookup in die_type_hash, |
673bfd45 DE |
17960 | and only reads the die in if necessary. |
17961 | ||
17962 | NOTE: This can be called when reading in partial or full symbols. */ | |
17963 | ||
f792889a | 17964 | static struct type * |
e7c27a73 | 17965 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17966 | { |
f792889a DJ |
17967 | struct type *this_type; |
17968 | ||
17969 | this_type = get_die_type (die, cu); | |
17970 | if (this_type) | |
17971 | return this_type; | |
17972 | ||
673bfd45 DE |
17973 | return read_type_die_1 (die, cu); |
17974 | } | |
17975 | ||
17976 | /* Read the type in DIE, CU. | |
17977 | Returns NULL for invalid types. */ | |
17978 | ||
17979 | static struct type * | |
17980 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
17981 | { | |
17982 | struct type *this_type = NULL; | |
17983 | ||
c906108c SS |
17984 | switch (die->tag) |
17985 | { | |
17986 | case DW_TAG_class_type: | |
680b30c7 | 17987 | case DW_TAG_interface_type: |
c906108c SS |
17988 | case DW_TAG_structure_type: |
17989 | case DW_TAG_union_type: | |
f792889a | 17990 | this_type = read_structure_type (die, cu); |
c906108c SS |
17991 | break; |
17992 | case DW_TAG_enumeration_type: | |
f792889a | 17993 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
17994 | break; |
17995 | case DW_TAG_subprogram: | |
17996 | case DW_TAG_subroutine_type: | |
edb3359d | 17997 | case DW_TAG_inlined_subroutine: |
f792889a | 17998 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
17999 | break; |
18000 | case DW_TAG_array_type: | |
f792889a | 18001 | this_type = read_array_type (die, cu); |
c906108c | 18002 | break; |
72019c9c | 18003 | case DW_TAG_set_type: |
f792889a | 18004 | this_type = read_set_type (die, cu); |
72019c9c | 18005 | break; |
c906108c | 18006 | case DW_TAG_pointer_type: |
f792889a | 18007 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
18008 | break; |
18009 | case DW_TAG_ptr_to_member_type: | |
f792889a | 18010 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
18011 | break; |
18012 | case DW_TAG_reference_type: | |
f792889a | 18013 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
18014 | break; |
18015 | case DW_TAG_const_type: | |
f792889a | 18016 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
18017 | break; |
18018 | case DW_TAG_volatile_type: | |
f792889a | 18019 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 18020 | break; |
06d66ee9 TT |
18021 | case DW_TAG_restrict_type: |
18022 | this_type = read_tag_restrict_type (die, cu); | |
18023 | break; | |
c906108c | 18024 | case DW_TAG_string_type: |
f792889a | 18025 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
18026 | break; |
18027 | case DW_TAG_typedef: | |
f792889a | 18028 | this_type = read_typedef (die, cu); |
c906108c | 18029 | break; |
a02abb62 | 18030 | case DW_TAG_subrange_type: |
f792889a | 18031 | this_type = read_subrange_type (die, cu); |
a02abb62 | 18032 | break; |
c906108c | 18033 | case DW_TAG_base_type: |
f792889a | 18034 | this_type = read_base_type (die, cu); |
c906108c | 18035 | break; |
81a17f79 | 18036 | case DW_TAG_unspecified_type: |
f792889a | 18037 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 18038 | break; |
0114d602 DJ |
18039 | case DW_TAG_namespace: |
18040 | this_type = read_namespace_type (die, cu); | |
18041 | break; | |
f55ee35c JK |
18042 | case DW_TAG_module: |
18043 | this_type = read_module_type (die, cu); | |
18044 | break; | |
c906108c | 18045 | default: |
3e43a32a MS |
18046 | complaint (&symfile_complaints, |
18047 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 18048 | dwarf_tag_name (die->tag)); |
c906108c SS |
18049 | break; |
18050 | } | |
63d06c5c | 18051 | |
f792889a | 18052 | return this_type; |
63d06c5c DC |
18053 | } |
18054 | ||
abc72ce4 DE |
18055 | /* See if we can figure out if the class lives in a namespace. We do |
18056 | this by looking for a member function; its demangled name will | |
18057 | contain namespace info, if there is any. | |
18058 | Return the computed name or NULL. | |
18059 | Space for the result is allocated on the objfile's obstack. | |
18060 | This is the full-die version of guess_partial_die_structure_name. | |
18061 | In this case we know DIE has no useful parent. */ | |
18062 | ||
18063 | static char * | |
18064 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
18065 | { | |
18066 | struct die_info *spec_die; | |
18067 | struct dwarf2_cu *spec_cu; | |
18068 | struct die_info *child; | |
18069 | ||
18070 | spec_cu = cu; | |
18071 | spec_die = die_specification (die, &spec_cu); | |
18072 | if (spec_die != NULL) | |
18073 | { | |
18074 | die = spec_die; | |
18075 | cu = spec_cu; | |
18076 | } | |
18077 | ||
18078 | for (child = die->child; | |
18079 | child != NULL; | |
18080 | child = child->sibling) | |
18081 | { | |
18082 | if (child->tag == DW_TAG_subprogram) | |
18083 | { | |
18084 | struct attribute *attr; | |
18085 | ||
18086 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
18087 | if (attr == NULL) | |
18088 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
18089 | if (attr != NULL) | |
18090 | { | |
18091 | char *actual_name | |
18092 | = language_class_name_from_physname (cu->language_defn, | |
18093 | DW_STRING (attr)); | |
18094 | char *name = NULL; | |
18095 | ||
18096 | if (actual_name != NULL) | |
18097 | { | |
15d034d0 | 18098 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
18099 | |
18100 | if (die_name != NULL | |
18101 | && strcmp (die_name, actual_name) != 0) | |
18102 | { | |
18103 | /* Strip off the class name from the full name. | |
18104 | We want the prefix. */ | |
18105 | int die_name_len = strlen (die_name); | |
18106 | int actual_name_len = strlen (actual_name); | |
18107 | ||
18108 | /* Test for '::' as a sanity check. */ | |
18109 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
18110 | && actual_name[actual_name_len |
18111 | - die_name_len - 1] == ':') | |
abc72ce4 | 18112 | name = |
10f0c4bb TT |
18113 | obstack_copy0 (&cu->objfile->objfile_obstack, |
18114 | actual_name, | |
18115 | actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
18116 | } |
18117 | } | |
18118 | xfree (actual_name); | |
18119 | return name; | |
18120 | } | |
18121 | } | |
18122 | } | |
18123 | ||
18124 | return NULL; | |
18125 | } | |
18126 | ||
96408a79 SA |
18127 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
18128 | prefix part in such case. See | |
18129 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
18130 | ||
18131 | static char * | |
18132 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
18133 | { | |
18134 | struct attribute *attr; | |
18135 | char *base; | |
18136 | ||
18137 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
18138 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
18139 | return NULL; | |
18140 | ||
18141 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
18142 | if (attr != NULL && DW_STRING (attr) != NULL) | |
18143 | return NULL; | |
18144 | ||
18145 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
18146 | if (attr == NULL) | |
18147 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
18148 | if (attr == NULL || DW_STRING (attr) == NULL) | |
18149 | return NULL; | |
18150 | ||
18151 | /* dwarf2_name had to be already called. */ | |
18152 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
18153 | ||
18154 | /* Strip the base name, keep any leading namespaces/classes. */ | |
18155 | base = strrchr (DW_STRING (attr), ':'); | |
18156 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
18157 | return ""; | |
18158 | ||
10f0c4bb TT |
18159 | return obstack_copy0 (&cu->objfile->objfile_obstack, |
18160 | DW_STRING (attr), &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
18161 | } |
18162 | ||
fdde2d81 | 18163 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 18164 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 18165 | |
0114d602 DJ |
18166 | For example, if we're within the method foo() in the following |
18167 | code: | |
18168 | ||
18169 | namespace N { | |
18170 | class C { | |
18171 | void foo () { | |
18172 | } | |
18173 | }; | |
18174 | } | |
18175 | ||
18176 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 18177 | |
0d5cff50 | 18178 | static const char * |
e142c38c | 18179 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 18180 | { |
0114d602 DJ |
18181 | struct die_info *parent, *spec_die; |
18182 | struct dwarf2_cu *spec_cu; | |
18183 | struct type *parent_type; | |
96408a79 | 18184 | char *retval; |
63d06c5c | 18185 | |
f55ee35c JK |
18186 | if (cu->language != language_cplus && cu->language != language_java |
18187 | && cu->language != language_fortran) | |
0114d602 DJ |
18188 | return ""; |
18189 | ||
96408a79 SA |
18190 | retval = anonymous_struct_prefix (die, cu); |
18191 | if (retval) | |
18192 | return retval; | |
18193 | ||
0114d602 DJ |
18194 | /* We have to be careful in the presence of DW_AT_specification. |
18195 | For example, with GCC 3.4, given the code | |
18196 | ||
18197 | namespace N { | |
18198 | void foo() { | |
18199 | // Definition of N::foo. | |
18200 | } | |
18201 | } | |
18202 | ||
18203 | then we'll have a tree of DIEs like this: | |
18204 | ||
18205 | 1: DW_TAG_compile_unit | |
18206 | 2: DW_TAG_namespace // N | |
18207 | 3: DW_TAG_subprogram // declaration of N::foo | |
18208 | 4: DW_TAG_subprogram // definition of N::foo | |
18209 | DW_AT_specification // refers to die #3 | |
18210 | ||
18211 | Thus, when processing die #4, we have to pretend that we're in | |
18212 | the context of its DW_AT_specification, namely the contex of die | |
18213 | #3. */ | |
18214 | spec_cu = cu; | |
18215 | spec_die = die_specification (die, &spec_cu); | |
18216 | if (spec_die == NULL) | |
18217 | parent = die->parent; | |
18218 | else | |
63d06c5c | 18219 | { |
0114d602 DJ |
18220 | parent = spec_die->parent; |
18221 | cu = spec_cu; | |
63d06c5c | 18222 | } |
0114d602 DJ |
18223 | |
18224 | if (parent == NULL) | |
18225 | return ""; | |
98bfdba5 PA |
18226 | else if (parent->building_fullname) |
18227 | { | |
18228 | const char *name; | |
18229 | const char *parent_name; | |
18230 | ||
18231 | /* It has been seen on RealView 2.2 built binaries, | |
18232 | DW_TAG_template_type_param types actually _defined_ as | |
18233 | children of the parent class: | |
18234 | ||
18235 | enum E {}; | |
18236 | template class <class Enum> Class{}; | |
18237 | Class<enum E> class_e; | |
18238 | ||
18239 | 1: DW_TAG_class_type (Class) | |
18240 | 2: DW_TAG_enumeration_type (E) | |
18241 | 3: DW_TAG_enumerator (enum1:0) | |
18242 | 3: DW_TAG_enumerator (enum2:1) | |
18243 | ... | |
18244 | 2: DW_TAG_template_type_param | |
18245 | DW_AT_type DW_FORM_ref_udata (E) | |
18246 | ||
18247 | Besides being broken debug info, it can put GDB into an | |
18248 | infinite loop. Consider: | |
18249 | ||
18250 | When we're building the full name for Class<E>, we'll start | |
18251 | at Class, and go look over its template type parameters, | |
18252 | finding E. We'll then try to build the full name of E, and | |
18253 | reach here. We're now trying to build the full name of E, | |
18254 | and look over the parent DIE for containing scope. In the | |
18255 | broken case, if we followed the parent DIE of E, we'd again | |
18256 | find Class, and once again go look at its template type | |
18257 | arguments, etc., etc. Simply don't consider such parent die | |
18258 | as source-level parent of this die (it can't be, the language | |
18259 | doesn't allow it), and break the loop here. */ | |
18260 | name = dwarf2_name (die, cu); | |
18261 | parent_name = dwarf2_name (parent, cu); | |
18262 | complaint (&symfile_complaints, | |
18263 | _("template param type '%s' defined within parent '%s'"), | |
18264 | name ? name : "<unknown>", | |
18265 | parent_name ? parent_name : "<unknown>"); | |
18266 | return ""; | |
18267 | } | |
63d06c5c | 18268 | else |
0114d602 DJ |
18269 | switch (parent->tag) |
18270 | { | |
63d06c5c | 18271 | case DW_TAG_namespace: |
0114d602 | 18272 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
18273 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
18274 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
18275 | Work around this problem here. */ | |
18276 | if (cu->language == language_cplus | |
18277 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
18278 | return ""; | |
0114d602 DJ |
18279 | /* We give a name to even anonymous namespaces. */ |
18280 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 18281 | case DW_TAG_class_type: |
680b30c7 | 18282 | case DW_TAG_interface_type: |
63d06c5c | 18283 | case DW_TAG_structure_type: |
0114d602 | 18284 | case DW_TAG_union_type: |
f55ee35c | 18285 | case DW_TAG_module: |
0114d602 DJ |
18286 | parent_type = read_type_die (parent, cu); |
18287 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
18288 | return TYPE_TAG_NAME (parent_type); | |
18289 | else | |
18290 | /* An anonymous structure is only allowed non-static data | |
18291 | members; no typedefs, no member functions, et cetera. | |
18292 | So it does not need a prefix. */ | |
18293 | return ""; | |
abc72ce4 | 18294 | case DW_TAG_compile_unit: |
95554aad | 18295 | case DW_TAG_partial_unit: |
abc72ce4 DE |
18296 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
18297 | if (cu->language == language_cplus | |
8b70b953 | 18298 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
18299 | && die->child != NULL |
18300 | && (die->tag == DW_TAG_class_type | |
18301 | || die->tag == DW_TAG_structure_type | |
18302 | || die->tag == DW_TAG_union_type)) | |
18303 | { | |
18304 | char *name = guess_full_die_structure_name (die, cu); | |
18305 | if (name != NULL) | |
18306 | return name; | |
18307 | } | |
18308 | return ""; | |
63d06c5c | 18309 | default: |
8176b9b8 | 18310 | return determine_prefix (parent, cu); |
63d06c5c | 18311 | } |
63d06c5c DC |
18312 | } |
18313 | ||
3e43a32a MS |
18314 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
18315 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
18316 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
18317 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
18318 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 18319 | |
f55ee35c | 18320 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
18321 | |
18322 | static char * | |
f55ee35c JK |
18323 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
18324 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 18325 | { |
f55ee35c | 18326 | const char *lead = ""; |
5c315b68 | 18327 | const char *sep; |
63d06c5c | 18328 | |
3e43a32a MS |
18329 | if (suffix == NULL || suffix[0] == '\0' |
18330 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
18331 | sep = ""; |
18332 | else if (cu->language == language_java) | |
18333 | sep = "."; | |
f55ee35c JK |
18334 | else if (cu->language == language_fortran && physname) |
18335 | { | |
18336 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
18337 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
18338 | ||
18339 | lead = "__"; | |
18340 | sep = "_MOD_"; | |
18341 | } | |
987504bb JJ |
18342 | else |
18343 | sep = "::"; | |
63d06c5c | 18344 | |
6dd47d34 DE |
18345 | if (prefix == NULL) |
18346 | prefix = ""; | |
18347 | if (suffix == NULL) | |
18348 | suffix = ""; | |
18349 | ||
987504bb JJ |
18350 | if (obs == NULL) |
18351 | { | |
3e43a32a MS |
18352 | char *retval |
18353 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 18354 | |
f55ee35c JK |
18355 | strcpy (retval, lead); |
18356 | strcat (retval, prefix); | |
6dd47d34 DE |
18357 | strcat (retval, sep); |
18358 | strcat (retval, suffix); | |
63d06c5c DC |
18359 | return retval; |
18360 | } | |
987504bb JJ |
18361 | else |
18362 | { | |
18363 | /* We have an obstack. */ | |
f55ee35c | 18364 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 18365 | } |
63d06c5c DC |
18366 | } |
18367 | ||
c906108c SS |
18368 | /* Return sibling of die, NULL if no sibling. */ |
18369 | ||
f9aca02d | 18370 | static struct die_info * |
fba45db2 | 18371 | sibling_die (struct die_info *die) |
c906108c | 18372 | { |
639d11d3 | 18373 | return die->sibling; |
c906108c SS |
18374 | } |
18375 | ||
71c25dea TT |
18376 | /* Get name of a die, return NULL if not found. */ |
18377 | ||
15d034d0 TT |
18378 | static const char * |
18379 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
18380 | struct obstack *obstack) |
18381 | { | |
18382 | if (name && cu->language == language_cplus) | |
18383 | { | |
18384 | char *canon_name = cp_canonicalize_string (name); | |
18385 | ||
18386 | if (canon_name != NULL) | |
18387 | { | |
18388 | if (strcmp (canon_name, name) != 0) | |
10f0c4bb | 18389 | name = obstack_copy0 (obstack, canon_name, strlen (canon_name)); |
71c25dea TT |
18390 | xfree (canon_name); |
18391 | } | |
18392 | } | |
18393 | ||
18394 | return name; | |
c906108c SS |
18395 | } |
18396 | ||
9219021c DC |
18397 | /* Get name of a die, return NULL if not found. */ |
18398 | ||
15d034d0 | 18399 | static const char * |
e142c38c | 18400 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
18401 | { |
18402 | struct attribute *attr; | |
18403 | ||
e142c38c | 18404 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
18405 | if ((!attr || !DW_STRING (attr)) |
18406 | && die->tag != DW_TAG_class_type | |
18407 | && die->tag != DW_TAG_interface_type | |
18408 | && die->tag != DW_TAG_structure_type | |
18409 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
18410 | return NULL; |
18411 | ||
18412 | switch (die->tag) | |
18413 | { | |
18414 | case DW_TAG_compile_unit: | |
95554aad | 18415 | case DW_TAG_partial_unit: |
71c25dea TT |
18416 | /* Compilation units have a DW_AT_name that is a filename, not |
18417 | a source language identifier. */ | |
18418 | case DW_TAG_enumeration_type: | |
18419 | case DW_TAG_enumerator: | |
18420 | /* These tags always have simple identifiers already; no need | |
18421 | to canonicalize them. */ | |
18422 | return DW_STRING (attr); | |
907af001 | 18423 | |
418835cc KS |
18424 | case DW_TAG_subprogram: |
18425 | /* Java constructors will all be named "<init>", so return | |
18426 | the class name when we see this special case. */ | |
18427 | if (cu->language == language_java | |
18428 | && DW_STRING (attr) != NULL | |
18429 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
18430 | { | |
18431 | struct dwarf2_cu *spec_cu = cu; | |
18432 | struct die_info *spec_die; | |
18433 | ||
18434 | /* GCJ will output '<init>' for Java constructor names. | |
18435 | For this special case, return the name of the parent class. */ | |
18436 | ||
18437 | /* GCJ may output suprogram DIEs with AT_specification set. | |
18438 | If so, use the name of the specified DIE. */ | |
18439 | spec_die = die_specification (die, &spec_cu); | |
18440 | if (spec_die != NULL) | |
18441 | return dwarf2_name (spec_die, spec_cu); | |
18442 | ||
18443 | do | |
18444 | { | |
18445 | die = die->parent; | |
18446 | if (die->tag == DW_TAG_class_type) | |
18447 | return dwarf2_name (die, cu); | |
18448 | } | |
95554aad TT |
18449 | while (die->tag != DW_TAG_compile_unit |
18450 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 18451 | } |
907af001 UW |
18452 | break; |
18453 | ||
18454 | case DW_TAG_class_type: | |
18455 | case DW_TAG_interface_type: | |
18456 | case DW_TAG_structure_type: | |
18457 | case DW_TAG_union_type: | |
18458 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
18459 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
18460 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
18461 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
18462 | if (attr && DW_STRING (attr) |
18463 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
18464 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 18465 | return NULL; |
53832f31 TT |
18466 | |
18467 | /* GCC might emit a nameless typedef that has a linkage name. See | |
18468 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
18469 | if (!attr || DW_STRING (attr) == NULL) | |
18470 | { | |
df5c6c50 | 18471 | char *demangled = NULL; |
53832f31 TT |
18472 | |
18473 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
18474 | if (attr == NULL) | |
18475 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
18476 | ||
18477 | if (attr == NULL || DW_STRING (attr) == NULL) | |
18478 | return NULL; | |
18479 | ||
df5c6c50 JK |
18480 | /* Avoid demangling DW_STRING (attr) the second time on a second |
18481 | call for the same DIE. */ | |
18482 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 18483 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
18484 | |
18485 | if (demangled) | |
18486 | { | |
96408a79 SA |
18487 | char *base; |
18488 | ||
53832f31 | 18489 | /* FIXME: we already did this for the partial symbol... */ |
10f0c4bb TT |
18490 | DW_STRING (attr) = obstack_copy0 (&cu->objfile->objfile_obstack, |
18491 | demangled, strlen (demangled)); | |
53832f31 TT |
18492 | DW_STRING_IS_CANONICAL (attr) = 1; |
18493 | xfree (demangled); | |
96408a79 SA |
18494 | |
18495 | /* Strip any leading namespaces/classes, keep only the base name. | |
18496 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
18497 | base = strrchr (DW_STRING (attr), ':'); | |
18498 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
18499 | return &base[1]; | |
18500 | else | |
18501 | return DW_STRING (attr); | |
53832f31 TT |
18502 | } |
18503 | } | |
907af001 UW |
18504 | break; |
18505 | ||
71c25dea | 18506 | default: |
907af001 UW |
18507 | break; |
18508 | } | |
18509 | ||
18510 | if (!DW_STRING_IS_CANONICAL (attr)) | |
18511 | { | |
18512 | DW_STRING (attr) | |
18513 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
18514 | &cu->objfile->objfile_obstack); | |
18515 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 18516 | } |
907af001 | 18517 | return DW_STRING (attr); |
9219021c DC |
18518 | } |
18519 | ||
18520 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
18521 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
18522 | containing the return value on output. */ | |
9219021c DC |
18523 | |
18524 | static struct die_info * | |
f2f0e013 | 18525 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
18526 | { |
18527 | struct attribute *attr; | |
9219021c | 18528 | |
f2f0e013 | 18529 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
18530 | if (attr == NULL) |
18531 | return NULL; | |
18532 | ||
f2f0e013 | 18533 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
18534 | } |
18535 | ||
c906108c SS |
18536 | /* Convert a DIE tag into its string name. */ |
18537 | ||
f39c6ffd | 18538 | static const char * |
aa1ee363 | 18539 | dwarf_tag_name (unsigned tag) |
c906108c | 18540 | { |
f39c6ffd TT |
18541 | const char *name = get_DW_TAG_name (tag); |
18542 | ||
18543 | if (name == NULL) | |
18544 | return "DW_TAG_<unknown>"; | |
18545 | ||
18546 | return name; | |
c906108c SS |
18547 | } |
18548 | ||
18549 | /* Convert a DWARF attribute code into its string name. */ | |
18550 | ||
f39c6ffd | 18551 | static const char * |
aa1ee363 | 18552 | dwarf_attr_name (unsigned attr) |
c906108c | 18553 | { |
f39c6ffd TT |
18554 | const char *name; |
18555 | ||
c764a876 | 18556 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
18557 | if (attr == DW_AT_MIPS_fde) |
18558 | return "DW_AT_MIPS_fde"; | |
18559 | #else | |
18560 | if (attr == DW_AT_HP_block_index) | |
18561 | return "DW_AT_HP_block_index"; | |
c764a876 | 18562 | #endif |
f39c6ffd TT |
18563 | |
18564 | name = get_DW_AT_name (attr); | |
18565 | ||
18566 | if (name == NULL) | |
18567 | return "DW_AT_<unknown>"; | |
18568 | ||
18569 | return name; | |
c906108c SS |
18570 | } |
18571 | ||
18572 | /* Convert a DWARF value form code into its string name. */ | |
18573 | ||
f39c6ffd | 18574 | static const char * |
aa1ee363 | 18575 | dwarf_form_name (unsigned form) |
c906108c | 18576 | { |
f39c6ffd TT |
18577 | const char *name = get_DW_FORM_name (form); |
18578 | ||
18579 | if (name == NULL) | |
18580 | return "DW_FORM_<unknown>"; | |
18581 | ||
18582 | return name; | |
c906108c SS |
18583 | } |
18584 | ||
18585 | static char * | |
fba45db2 | 18586 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
18587 | { |
18588 | if (mybool) | |
18589 | return "TRUE"; | |
18590 | else | |
18591 | return "FALSE"; | |
18592 | } | |
18593 | ||
18594 | /* Convert a DWARF type code into its string name. */ | |
18595 | ||
f39c6ffd | 18596 | static const char * |
aa1ee363 | 18597 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 18598 | { |
f39c6ffd | 18599 | const char *name = get_DW_ATE_name (enc); |
c906108c | 18600 | |
f39c6ffd TT |
18601 | if (name == NULL) |
18602 | return "DW_ATE_<unknown>"; | |
c906108c | 18603 | |
f39c6ffd | 18604 | return name; |
c906108c | 18605 | } |
c906108c | 18606 | |
f9aca02d | 18607 | static void |
d97bc12b | 18608 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
18609 | { |
18610 | unsigned int i; | |
18611 | ||
d97bc12b DE |
18612 | print_spaces (indent, f); |
18613 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 18614 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
18615 | |
18616 | if (die->parent != NULL) | |
18617 | { | |
18618 | print_spaces (indent, f); | |
18619 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 18620 | die->parent->offset.sect_off); |
d97bc12b DE |
18621 | } |
18622 | ||
18623 | print_spaces (indent, f); | |
18624 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 18625 | dwarf_bool_name (die->child != NULL)); |
c906108c | 18626 | |
d97bc12b DE |
18627 | print_spaces (indent, f); |
18628 | fprintf_unfiltered (f, " attributes:\n"); | |
18629 | ||
c906108c SS |
18630 | for (i = 0; i < die->num_attrs; ++i) |
18631 | { | |
d97bc12b DE |
18632 | print_spaces (indent, f); |
18633 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
18634 | dwarf_attr_name (die->attrs[i].name), |
18635 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 18636 | |
c906108c SS |
18637 | switch (die->attrs[i].form) |
18638 | { | |
c906108c | 18639 | case DW_FORM_addr: |
3019eac3 | 18640 | case DW_FORM_GNU_addr_index: |
d97bc12b | 18641 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 18642 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
18643 | break; |
18644 | case DW_FORM_block2: | |
18645 | case DW_FORM_block4: | |
18646 | case DW_FORM_block: | |
18647 | case DW_FORM_block1: | |
56eb65bd SP |
18648 | fprintf_unfiltered (f, "block: size %s", |
18649 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 18650 | break; |
2dc7f7b3 | 18651 | case DW_FORM_exprloc: |
56eb65bd SP |
18652 | fprintf_unfiltered (f, "expression: size %s", |
18653 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 18654 | break; |
4568ecf9 DE |
18655 | case DW_FORM_ref_addr: |
18656 | fprintf_unfiltered (f, "ref address: "); | |
18657 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
18658 | break; | |
36586728 TT |
18659 | case DW_FORM_GNU_ref_alt: |
18660 | fprintf_unfiltered (f, "alt ref address: "); | |
18661 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
18662 | break; | |
10b3939b DJ |
18663 | case DW_FORM_ref1: |
18664 | case DW_FORM_ref2: | |
18665 | case DW_FORM_ref4: | |
4568ecf9 DE |
18666 | case DW_FORM_ref8: |
18667 | case DW_FORM_ref_udata: | |
d97bc12b | 18668 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 18669 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 18670 | break; |
c906108c SS |
18671 | case DW_FORM_data1: |
18672 | case DW_FORM_data2: | |
18673 | case DW_FORM_data4: | |
ce5d95e1 | 18674 | case DW_FORM_data8: |
c906108c SS |
18675 | case DW_FORM_udata: |
18676 | case DW_FORM_sdata: | |
43bbcdc2 PH |
18677 | fprintf_unfiltered (f, "constant: %s", |
18678 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 18679 | break; |
2dc7f7b3 TT |
18680 | case DW_FORM_sec_offset: |
18681 | fprintf_unfiltered (f, "section offset: %s", | |
18682 | pulongest (DW_UNSND (&die->attrs[i]))); | |
18683 | break; | |
55f1336d | 18684 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
18685 | fprintf_unfiltered (f, "signature: %s", |
18686 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 18687 | break; |
c906108c | 18688 | case DW_FORM_string: |
4bdf3d34 | 18689 | case DW_FORM_strp: |
3019eac3 | 18690 | case DW_FORM_GNU_str_index: |
36586728 | 18691 | case DW_FORM_GNU_strp_alt: |
8285870a | 18692 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 18693 | DW_STRING (&die->attrs[i]) |
8285870a JK |
18694 | ? DW_STRING (&die->attrs[i]) : "", |
18695 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
18696 | break; |
18697 | case DW_FORM_flag: | |
18698 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 18699 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 18700 | else |
d97bc12b | 18701 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 18702 | break; |
2dc7f7b3 TT |
18703 | case DW_FORM_flag_present: |
18704 | fprintf_unfiltered (f, "flag: TRUE"); | |
18705 | break; | |
a8329558 | 18706 | case DW_FORM_indirect: |
0963b4bd MS |
18707 | /* The reader will have reduced the indirect form to |
18708 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
18709 | fprintf_unfiltered (f, |
18710 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 18711 | break; |
c906108c | 18712 | default: |
d97bc12b | 18713 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 18714 | die->attrs[i].form); |
d97bc12b | 18715 | break; |
c906108c | 18716 | } |
d97bc12b | 18717 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
18718 | } |
18719 | } | |
18720 | ||
f9aca02d | 18721 | static void |
d97bc12b | 18722 | dump_die_for_error (struct die_info *die) |
c906108c | 18723 | { |
d97bc12b DE |
18724 | dump_die_shallow (gdb_stderr, 0, die); |
18725 | } | |
18726 | ||
18727 | static void | |
18728 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
18729 | { | |
18730 | int indent = level * 4; | |
18731 | ||
18732 | gdb_assert (die != NULL); | |
18733 | ||
18734 | if (level >= max_level) | |
18735 | return; | |
18736 | ||
18737 | dump_die_shallow (f, indent, die); | |
18738 | ||
18739 | if (die->child != NULL) | |
c906108c | 18740 | { |
d97bc12b DE |
18741 | print_spaces (indent, f); |
18742 | fprintf_unfiltered (f, " Children:"); | |
18743 | if (level + 1 < max_level) | |
18744 | { | |
18745 | fprintf_unfiltered (f, "\n"); | |
18746 | dump_die_1 (f, level + 1, max_level, die->child); | |
18747 | } | |
18748 | else | |
18749 | { | |
3e43a32a MS |
18750 | fprintf_unfiltered (f, |
18751 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
18752 | } |
18753 | } | |
18754 | ||
18755 | if (die->sibling != NULL && level > 0) | |
18756 | { | |
18757 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
18758 | } |
18759 | } | |
18760 | ||
d97bc12b DE |
18761 | /* This is called from the pdie macro in gdbinit.in. |
18762 | It's not static so gcc will keep a copy callable from gdb. */ | |
18763 | ||
18764 | void | |
18765 | dump_die (struct die_info *die, int max_level) | |
18766 | { | |
18767 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
18768 | } | |
18769 | ||
f9aca02d | 18770 | static void |
51545339 | 18771 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18772 | { |
51545339 | 18773 | void **slot; |
c906108c | 18774 | |
b64f50a1 JK |
18775 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
18776 | INSERT); | |
51545339 DJ |
18777 | |
18778 | *slot = die; | |
c906108c SS |
18779 | } |
18780 | ||
b64f50a1 JK |
18781 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
18782 | required kind. */ | |
18783 | ||
18784 | static sect_offset | |
ff39bb5e | 18785 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 18786 | { |
4568ecf9 | 18787 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 18788 | |
7771576e | 18789 | if (attr_form_is_ref (attr)) |
b64f50a1 | 18790 | return retval; |
93311388 | 18791 | |
b64f50a1 | 18792 | retval.sect_off = 0; |
93311388 DE |
18793 | complaint (&symfile_complaints, |
18794 | _("unsupported die ref attribute form: '%s'"), | |
18795 | dwarf_form_name (attr->form)); | |
b64f50a1 | 18796 | return retval; |
c906108c SS |
18797 | } |
18798 | ||
43bbcdc2 PH |
18799 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
18800 | * the value held by the attribute is not constant. */ | |
a02abb62 | 18801 | |
43bbcdc2 | 18802 | static LONGEST |
ff39bb5e | 18803 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 JB |
18804 | { |
18805 | if (attr->form == DW_FORM_sdata) | |
18806 | return DW_SND (attr); | |
18807 | else if (attr->form == DW_FORM_udata | |
18808 | || attr->form == DW_FORM_data1 | |
18809 | || attr->form == DW_FORM_data2 | |
18810 | || attr->form == DW_FORM_data4 | |
18811 | || attr->form == DW_FORM_data8) | |
18812 | return DW_UNSND (attr); | |
18813 | else | |
18814 | { | |
3e43a32a MS |
18815 | complaint (&symfile_complaints, |
18816 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
18817 | dwarf_form_name (attr->form)); |
18818 | return default_value; | |
18819 | } | |
18820 | } | |
18821 | ||
348e048f DE |
18822 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
18823 | On entry *REF_CU is the CU of SRC_DIE. | |
18824 | On exit *REF_CU is the CU of the result. */ | |
18825 | ||
18826 | static struct die_info * | |
ff39bb5e | 18827 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
18828 | struct dwarf2_cu **ref_cu) |
18829 | { | |
18830 | struct die_info *die; | |
18831 | ||
7771576e | 18832 | if (attr_form_is_ref (attr)) |
348e048f | 18833 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 18834 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
18835 | die = follow_die_sig (src_die, attr, ref_cu); |
18836 | else | |
18837 | { | |
18838 | dump_die_for_error (src_die); | |
18839 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 18840 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
18841 | } |
18842 | ||
18843 | return die; | |
03dd20cc DJ |
18844 | } |
18845 | ||
5c631832 | 18846 | /* Follow reference OFFSET. |
673bfd45 DE |
18847 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
18848 | On exit *REF_CU is the CU of the result. | |
18849 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 18850 | |
f9aca02d | 18851 | static struct die_info * |
36586728 TT |
18852 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
18853 | struct dwarf2_cu **ref_cu) | |
c906108c | 18854 | { |
10b3939b | 18855 | struct die_info temp_die; |
f2f0e013 | 18856 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 18857 | |
348e048f DE |
18858 | gdb_assert (cu->per_cu != NULL); |
18859 | ||
98bfdba5 PA |
18860 | target_cu = cu; |
18861 | ||
3019eac3 | 18862 | if (cu->per_cu->is_debug_types) |
348e048f DE |
18863 | { |
18864 | /* .debug_types CUs cannot reference anything outside their CU. | |
18865 | If they need to, they have to reference a signatured type via | |
55f1336d | 18866 | DW_FORM_ref_sig8. */ |
348e048f | 18867 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 18868 | return NULL; |
348e048f | 18869 | } |
36586728 TT |
18870 | else if (offset_in_dwz != cu->per_cu->is_dwz |
18871 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
18872 | { |
18873 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 18874 | |
36586728 TT |
18875 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
18876 | cu->objfile); | |
03dd20cc DJ |
18877 | |
18878 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
18879 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
18880 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 18881 | |
10b3939b DJ |
18882 | target_cu = per_cu->cu; |
18883 | } | |
98bfdba5 PA |
18884 | else if (cu->dies == NULL) |
18885 | { | |
18886 | /* We're loading full DIEs during partial symbol reading. */ | |
18887 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 18888 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 18889 | } |
c906108c | 18890 | |
f2f0e013 | 18891 | *ref_cu = target_cu; |
51545339 | 18892 | temp_die.offset = offset; |
b64f50a1 | 18893 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 18894 | } |
10b3939b | 18895 | |
5c631832 JK |
18896 | /* Follow reference attribute ATTR of SRC_DIE. |
18897 | On entry *REF_CU is the CU of SRC_DIE. | |
18898 | On exit *REF_CU is the CU of the result. */ | |
18899 | ||
18900 | static struct die_info * | |
ff39bb5e | 18901 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
18902 | struct dwarf2_cu **ref_cu) |
18903 | { | |
b64f50a1 | 18904 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
18905 | struct dwarf2_cu *cu = *ref_cu; |
18906 | struct die_info *die; | |
18907 | ||
36586728 TT |
18908 | die = follow_die_offset (offset, |
18909 | (attr->form == DW_FORM_GNU_ref_alt | |
18910 | || cu->per_cu->is_dwz), | |
18911 | ref_cu); | |
5c631832 JK |
18912 | if (!die) |
18913 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
18914 | "at 0x%x [in module %s]"), | |
4262abfb JK |
18915 | offset.sect_off, src_die->offset.sect_off, |
18916 | objfile_name (cu->objfile)); | |
348e048f | 18917 | |
5c631832 JK |
18918 | return die; |
18919 | } | |
18920 | ||
d83e736b JK |
18921 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
18922 | Returned value is intended for DW_OP_call*. Returned | |
18923 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
18924 | |
18925 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
18926 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
18927 | struct dwarf2_per_cu_data *per_cu, | |
18928 | CORE_ADDR (*get_frame_pc) (void *baton), | |
18929 | void *baton) | |
5c631832 | 18930 | { |
918dd910 | 18931 | struct dwarf2_cu *cu; |
5c631832 JK |
18932 | struct die_info *die; |
18933 | struct attribute *attr; | |
18934 | struct dwarf2_locexpr_baton retval; | |
18935 | ||
8cf6f0b1 TT |
18936 | dw2_setup (per_cu->objfile); |
18937 | ||
918dd910 JK |
18938 | if (per_cu->cu == NULL) |
18939 | load_cu (per_cu); | |
18940 | cu = per_cu->cu; | |
18941 | ||
36586728 | 18942 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
18943 | if (!die) |
18944 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 18945 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
18946 | |
18947 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
18948 | if (!attr) | |
18949 | { | |
e103e986 JK |
18950 | /* DWARF: "If there is no such attribute, then there is no effect.". |
18951 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 18952 | |
e103e986 | 18953 | retval.data = NULL; |
5c631832 JK |
18954 | retval.size = 0; |
18955 | } | |
8cf6f0b1 TT |
18956 | else if (attr_form_is_section_offset (attr)) |
18957 | { | |
18958 | struct dwarf2_loclist_baton loclist_baton; | |
18959 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
18960 | size_t size; | |
18961 | ||
18962 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
18963 | ||
18964 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
18965 | &size, pc); | |
18966 | retval.size = size; | |
18967 | } | |
5c631832 JK |
18968 | else |
18969 | { | |
18970 | if (!attr_form_is_block (attr)) | |
18971 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
18972 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
4262abfb | 18973 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
18974 | |
18975 | retval.data = DW_BLOCK (attr)->data; | |
18976 | retval.size = DW_BLOCK (attr)->size; | |
18977 | } | |
18978 | retval.per_cu = cu->per_cu; | |
918dd910 | 18979 | |
918dd910 JK |
18980 | age_cached_comp_units (); |
18981 | ||
5c631832 | 18982 | return retval; |
348e048f DE |
18983 | } |
18984 | ||
8b9737bf TT |
18985 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
18986 | offset. */ | |
18987 | ||
18988 | struct dwarf2_locexpr_baton | |
18989 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
18990 | struct dwarf2_per_cu_data *per_cu, | |
18991 | CORE_ADDR (*get_frame_pc) (void *baton), | |
18992 | void *baton) | |
18993 | { | |
18994 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
18995 | ||
18996 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
18997 | } | |
18998 | ||
b6807d98 TT |
18999 | /* Write a constant of a given type as target-ordered bytes into |
19000 | OBSTACK. */ | |
19001 | ||
19002 | static const gdb_byte * | |
19003 | write_constant_as_bytes (struct obstack *obstack, | |
19004 | enum bfd_endian byte_order, | |
19005 | struct type *type, | |
19006 | ULONGEST value, | |
19007 | LONGEST *len) | |
19008 | { | |
19009 | gdb_byte *result; | |
19010 | ||
19011 | *len = TYPE_LENGTH (type); | |
19012 | result = obstack_alloc (obstack, *len); | |
19013 | store_unsigned_integer (result, *len, byte_order, value); | |
19014 | ||
19015 | return result; | |
19016 | } | |
19017 | ||
19018 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
19019 | pointer to the constant bytes and set LEN to the length of the | |
19020 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
19021 | does not have a DW_AT_const_value, return NULL. */ | |
19022 | ||
19023 | const gdb_byte * | |
19024 | dwarf2_fetch_constant_bytes (sect_offset offset, | |
19025 | struct dwarf2_per_cu_data *per_cu, | |
19026 | struct obstack *obstack, | |
19027 | LONGEST *len) | |
19028 | { | |
19029 | struct dwarf2_cu *cu; | |
19030 | struct die_info *die; | |
19031 | struct attribute *attr; | |
19032 | const gdb_byte *result = NULL; | |
19033 | struct type *type; | |
19034 | LONGEST value; | |
19035 | enum bfd_endian byte_order; | |
19036 | ||
19037 | dw2_setup (per_cu->objfile); | |
19038 | ||
19039 | if (per_cu->cu == NULL) | |
19040 | load_cu (per_cu); | |
19041 | cu = per_cu->cu; | |
19042 | ||
19043 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); | |
19044 | if (!die) | |
19045 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 19046 | offset.sect_off, objfile_name (per_cu->objfile)); |
b6807d98 TT |
19047 | |
19048 | ||
19049 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
19050 | if (attr == NULL) | |
19051 | return NULL; | |
19052 | ||
19053 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
19054 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
19055 | ||
19056 | switch (attr->form) | |
19057 | { | |
19058 | case DW_FORM_addr: | |
19059 | case DW_FORM_GNU_addr_index: | |
19060 | { | |
19061 | gdb_byte *tem; | |
19062 | ||
19063 | *len = cu->header.addr_size; | |
19064 | tem = obstack_alloc (obstack, *len); | |
19065 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); | |
19066 | result = tem; | |
19067 | } | |
19068 | break; | |
19069 | case DW_FORM_string: | |
19070 | case DW_FORM_strp: | |
19071 | case DW_FORM_GNU_str_index: | |
19072 | case DW_FORM_GNU_strp_alt: | |
19073 | /* DW_STRING is already allocated on the objfile obstack, point | |
19074 | directly to it. */ | |
19075 | result = (const gdb_byte *) DW_STRING (attr); | |
19076 | *len = strlen (DW_STRING (attr)); | |
19077 | break; | |
19078 | case DW_FORM_block1: | |
19079 | case DW_FORM_block2: | |
19080 | case DW_FORM_block4: | |
19081 | case DW_FORM_block: | |
19082 | case DW_FORM_exprloc: | |
19083 | result = DW_BLOCK (attr)->data; | |
19084 | *len = DW_BLOCK (attr)->size; | |
19085 | break; | |
19086 | ||
19087 | /* The DW_AT_const_value attributes are supposed to carry the | |
19088 | symbol's value "represented as it would be on the target | |
19089 | architecture." By the time we get here, it's already been | |
19090 | converted to host endianness, so we just need to sign- or | |
19091 | zero-extend it as appropriate. */ | |
19092 | case DW_FORM_data1: | |
19093 | type = die_type (die, cu); | |
19094 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
19095 | if (result == NULL) | |
19096 | result = write_constant_as_bytes (obstack, byte_order, | |
19097 | type, value, len); | |
19098 | break; | |
19099 | case DW_FORM_data2: | |
19100 | type = die_type (die, cu); | |
19101 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
19102 | if (result == NULL) | |
19103 | result = write_constant_as_bytes (obstack, byte_order, | |
19104 | type, value, len); | |
19105 | break; | |
19106 | case DW_FORM_data4: | |
19107 | type = die_type (die, cu); | |
19108 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
19109 | if (result == NULL) | |
19110 | result = write_constant_as_bytes (obstack, byte_order, | |
19111 | type, value, len); | |
19112 | break; | |
19113 | case DW_FORM_data8: | |
19114 | type = die_type (die, cu); | |
19115 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
19116 | if (result == NULL) | |
19117 | result = write_constant_as_bytes (obstack, byte_order, | |
19118 | type, value, len); | |
19119 | break; | |
19120 | ||
19121 | case DW_FORM_sdata: | |
19122 | type = die_type (die, cu); | |
19123 | result = write_constant_as_bytes (obstack, byte_order, | |
19124 | type, DW_SND (attr), len); | |
19125 | break; | |
19126 | ||
19127 | case DW_FORM_udata: | |
19128 | type = die_type (die, cu); | |
19129 | result = write_constant_as_bytes (obstack, byte_order, | |
19130 | type, DW_UNSND (attr), len); | |
19131 | break; | |
19132 | ||
19133 | default: | |
19134 | complaint (&symfile_complaints, | |
19135 | _("unsupported const value attribute form: '%s'"), | |
19136 | dwarf_form_name (attr->form)); | |
19137 | break; | |
19138 | } | |
19139 | ||
19140 | return result; | |
19141 | } | |
19142 | ||
8a9b8146 TT |
19143 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
19144 | PER_CU. */ | |
19145 | ||
19146 | struct type * | |
b64f50a1 | 19147 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
19148 | struct dwarf2_per_cu_data *per_cu) |
19149 | { | |
b64f50a1 JK |
19150 | sect_offset die_offset_sect; |
19151 | ||
8a9b8146 | 19152 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
19153 | |
19154 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
19155 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
19156 | } |
19157 | ||
ac9ec31b | 19158 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 19159 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
19160 | On exit *REF_CU is the CU of the result. |
19161 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
19162 | |
19163 | static struct die_info * | |
ac9ec31b DE |
19164 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
19165 | struct dwarf2_cu **ref_cu) | |
348e048f DE |
19166 | { |
19167 | struct objfile *objfile = (*ref_cu)->objfile; | |
19168 | struct die_info temp_die; | |
348e048f DE |
19169 | struct dwarf2_cu *sig_cu; |
19170 | struct die_info *die; | |
19171 | ||
ac9ec31b DE |
19172 | /* While it might be nice to assert sig_type->type == NULL here, |
19173 | we can get here for DW_AT_imported_declaration where we need | |
19174 | the DIE not the type. */ | |
348e048f DE |
19175 | |
19176 | /* If necessary, add it to the queue and load its DIEs. */ | |
19177 | ||
95554aad | 19178 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 19179 | read_signatured_type (sig_type); |
348e048f | 19180 | |
348e048f | 19181 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 19182 | gdb_assert (sig_cu != NULL); |
3019eac3 DE |
19183 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
19184 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
19185 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
19186 | temp_die.offset.sect_off); | |
348e048f DE |
19187 | if (die) |
19188 | { | |
796a7ff8 DE |
19189 | /* For .gdb_index version 7 keep track of included TUs. |
19190 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
19191 | if (dwarf2_per_objfile->index_table != NULL | |
19192 | && dwarf2_per_objfile->index_table->version <= 7) | |
19193 | { | |
19194 | VEC_safe_push (dwarf2_per_cu_ptr, | |
19195 | (*ref_cu)->per_cu->imported_symtabs, | |
19196 | sig_cu->per_cu); | |
19197 | } | |
19198 | ||
348e048f DE |
19199 | *ref_cu = sig_cu; |
19200 | return die; | |
19201 | } | |
19202 | ||
ac9ec31b DE |
19203 | return NULL; |
19204 | } | |
19205 | ||
19206 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
19207 | On entry *REF_CU is the CU of SRC_DIE. | |
19208 | On exit *REF_CU is the CU of the result. | |
19209 | The result is the DIE of the type. | |
19210 | If the referenced type cannot be found an error is thrown. */ | |
19211 | ||
19212 | static struct die_info * | |
ff39bb5e | 19213 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
19214 | struct dwarf2_cu **ref_cu) |
19215 | { | |
19216 | ULONGEST signature = DW_SIGNATURE (attr); | |
19217 | struct signatured_type *sig_type; | |
19218 | struct die_info *die; | |
19219 | ||
19220 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
19221 | ||
a2ce51a0 | 19222 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
19223 | /* sig_type will be NULL if the signatured type is missing from |
19224 | the debug info. */ | |
19225 | if (sig_type == NULL) | |
19226 | { | |
19227 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
19228 | " from DIE at 0x%x [in module %s]"), | |
19229 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 19230 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
19231 | } |
19232 | ||
19233 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
19234 | if (die == NULL) | |
19235 | { | |
19236 | dump_die_for_error (src_die); | |
19237 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
19238 | " from DIE at 0x%x [in module %s]"), | |
19239 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 19240 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
19241 | } |
19242 | ||
19243 | return die; | |
19244 | } | |
19245 | ||
19246 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
19247 | reading in and processing the type unit if necessary. */ | |
19248 | ||
19249 | static struct type * | |
19250 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
19251 | struct dwarf2_cu *cu) | |
19252 | { | |
19253 | struct signatured_type *sig_type; | |
19254 | struct dwarf2_cu *type_cu; | |
19255 | struct die_info *type_die; | |
19256 | struct type *type; | |
19257 | ||
a2ce51a0 | 19258 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
19259 | /* sig_type will be NULL if the signatured type is missing from |
19260 | the debug info. */ | |
19261 | if (sig_type == NULL) | |
19262 | { | |
19263 | complaint (&symfile_complaints, | |
19264 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
19265 | " from DIE at 0x%x [in module %s]"), | |
19266 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19267 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19268 | return build_error_marker_type (cu, die); |
19269 | } | |
19270 | ||
19271 | /* If we already know the type we're done. */ | |
19272 | if (sig_type->type != NULL) | |
19273 | return sig_type->type; | |
19274 | ||
19275 | type_cu = cu; | |
19276 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
19277 | if (type_die != NULL) | |
19278 | { | |
19279 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
19280 | is created. This is important, for example, because for c++ classes | |
19281 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
19282 | type = read_type_die (type_die, type_cu); | |
19283 | if (type == NULL) | |
19284 | { | |
19285 | complaint (&symfile_complaints, | |
19286 | _("Dwarf Error: Cannot build signatured type %s" | |
19287 | " referenced from DIE at 0x%x [in module %s]"), | |
19288 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19289 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19290 | type = build_error_marker_type (cu, die); |
19291 | } | |
19292 | } | |
19293 | else | |
19294 | { | |
19295 | complaint (&symfile_complaints, | |
19296 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
19297 | " from DIE at 0x%x [in module %s]"), | |
19298 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19299 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19300 | type = build_error_marker_type (cu, die); |
19301 | } | |
19302 | sig_type->type = type; | |
19303 | ||
19304 | return type; | |
19305 | } | |
19306 | ||
19307 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
19308 | reading in and processing the type unit if necessary. */ | |
19309 | ||
19310 | static struct type * | |
ff39bb5e | 19311 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 19312 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
19313 | { |
19314 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 19315 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
19316 | { |
19317 | struct dwarf2_cu *type_cu = cu; | |
19318 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
19319 | ||
19320 | return read_type_die (type_die, type_cu); | |
19321 | } | |
19322 | else if (attr->form == DW_FORM_ref_sig8) | |
19323 | { | |
19324 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
19325 | } | |
19326 | else | |
19327 | { | |
19328 | complaint (&symfile_complaints, | |
19329 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
19330 | " at 0x%x [in module %s]"), | |
19331 | dwarf_form_name (attr->form), die->offset.sect_off, | |
4262abfb | 19332 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19333 | return build_error_marker_type (cu, die); |
19334 | } | |
348e048f DE |
19335 | } |
19336 | ||
e5fe5e75 | 19337 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
19338 | |
19339 | static void | |
e5fe5e75 | 19340 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 19341 | { |
52dc124a | 19342 | struct signatured_type *sig_type; |
348e048f | 19343 | |
f4dc4d17 DE |
19344 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
19345 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
19346 | ||
6721b2ec DE |
19347 | /* We have the per_cu, but we need the signatured_type. |
19348 | Fortunately this is an easy translation. */ | |
19349 | gdb_assert (per_cu->is_debug_types); | |
19350 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 19351 | |
6721b2ec | 19352 | gdb_assert (per_cu->cu == NULL); |
348e048f | 19353 | |
52dc124a | 19354 | read_signatured_type (sig_type); |
348e048f | 19355 | |
6721b2ec | 19356 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
19357 | } |
19358 | ||
dee91e82 DE |
19359 | /* die_reader_func for read_signatured_type. |
19360 | This is identical to load_full_comp_unit_reader, | |
19361 | but is kept separate for now. */ | |
348e048f DE |
19362 | |
19363 | static void | |
dee91e82 | 19364 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 19365 | const gdb_byte *info_ptr, |
dee91e82 DE |
19366 | struct die_info *comp_unit_die, |
19367 | int has_children, | |
19368 | void *data) | |
348e048f | 19369 | { |
dee91e82 | 19370 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 19371 | |
dee91e82 DE |
19372 | gdb_assert (cu->die_hash == NULL); |
19373 | cu->die_hash = | |
19374 | htab_create_alloc_ex (cu->header.length / 12, | |
19375 | die_hash, | |
19376 | die_eq, | |
19377 | NULL, | |
19378 | &cu->comp_unit_obstack, | |
19379 | hashtab_obstack_allocate, | |
19380 | dummy_obstack_deallocate); | |
348e048f | 19381 | |
dee91e82 DE |
19382 | if (has_children) |
19383 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
19384 | &info_ptr, comp_unit_die); | |
19385 | cu->dies = comp_unit_die; | |
19386 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
19387 | |
19388 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 19389 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 19390 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
19391 | or we won't be able to build types correctly. |
19392 | Similarly, if we do not read the producer, we can not apply | |
19393 | producer-specific interpretation. */ | |
95554aad | 19394 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 19395 | } |
348e048f | 19396 | |
3019eac3 DE |
19397 | /* Read in a signatured type and build its CU and DIEs. |
19398 | If the type is a stub for the real type in a DWO file, | |
19399 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
19400 | |
19401 | static void | |
19402 | read_signatured_type (struct signatured_type *sig_type) | |
19403 | { | |
19404 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 19405 | |
3019eac3 | 19406 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 19407 | gdb_assert (per_cu->cu == NULL); |
348e048f | 19408 | |
f4dc4d17 DE |
19409 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
19410 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 19411 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
19412 | } |
19413 | ||
c906108c SS |
19414 | /* Decode simple location descriptions. |
19415 | Given a pointer to a dwarf block that defines a location, compute | |
19416 | the location and return the value. | |
19417 | ||
4cecd739 DJ |
19418 | NOTE drow/2003-11-18: This function is called in two situations |
19419 | now: for the address of static or global variables (partial symbols | |
19420 | only) and for offsets into structures which are expected to be | |
19421 | (more or less) constant. The partial symbol case should go away, | |
19422 | and only the constant case should remain. That will let this | |
19423 | function complain more accurately. A few special modes are allowed | |
19424 | without complaint for global variables (for instance, global | |
19425 | register values and thread-local values). | |
c906108c SS |
19426 | |
19427 | A location description containing no operations indicates that the | |
4cecd739 | 19428 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
19429 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
19430 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
19431 | complaint. |
19432 | ||
19433 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
19434 | |
19435 | static CORE_ADDR | |
e7c27a73 | 19436 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 19437 | { |
e7c27a73 | 19438 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
19439 | size_t i; |
19440 | size_t size = blk->size; | |
d521ce57 | 19441 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
19442 | CORE_ADDR stack[64]; |
19443 | int stacki; | |
19444 | unsigned int bytes_read, unsnd; | |
19445 | gdb_byte op; | |
c906108c | 19446 | |
21ae7a4d JK |
19447 | i = 0; |
19448 | stacki = 0; | |
19449 | stack[stacki] = 0; | |
19450 | stack[++stacki] = 0; | |
19451 | ||
19452 | while (i < size) | |
19453 | { | |
19454 | op = data[i++]; | |
19455 | switch (op) | |
19456 | { | |
19457 | case DW_OP_lit0: | |
19458 | case DW_OP_lit1: | |
19459 | case DW_OP_lit2: | |
19460 | case DW_OP_lit3: | |
19461 | case DW_OP_lit4: | |
19462 | case DW_OP_lit5: | |
19463 | case DW_OP_lit6: | |
19464 | case DW_OP_lit7: | |
19465 | case DW_OP_lit8: | |
19466 | case DW_OP_lit9: | |
19467 | case DW_OP_lit10: | |
19468 | case DW_OP_lit11: | |
19469 | case DW_OP_lit12: | |
19470 | case DW_OP_lit13: | |
19471 | case DW_OP_lit14: | |
19472 | case DW_OP_lit15: | |
19473 | case DW_OP_lit16: | |
19474 | case DW_OP_lit17: | |
19475 | case DW_OP_lit18: | |
19476 | case DW_OP_lit19: | |
19477 | case DW_OP_lit20: | |
19478 | case DW_OP_lit21: | |
19479 | case DW_OP_lit22: | |
19480 | case DW_OP_lit23: | |
19481 | case DW_OP_lit24: | |
19482 | case DW_OP_lit25: | |
19483 | case DW_OP_lit26: | |
19484 | case DW_OP_lit27: | |
19485 | case DW_OP_lit28: | |
19486 | case DW_OP_lit29: | |
19487 | case DW_OP_lit30: | |
19488 | case DW_OP_lit31: | |
19489 | stack[++stacki] = op - DW_OP_lit0; | |
19490 | break; | |
f1bea926 | 19491 | |
21ae7a4d JK |
19492 | case DW_OP_reg0: |
19493 | case DW_OP_reg1: | |
19494 | case DW_OP_reg2: | |
19495 | case DW_OP_reg3: | |
19496 | case DW_OP_reg4: | |
19497 | case DW_OP_reg5: | |
19498 | case DW_OP_reg6: | |
19499 | case DW_OP_reg7: | |
19500 | case DW_OP_reg8: | |
19501 | case DW_OP_reg9: | |
19502 | case DW_OP_reg10: | |
19503 | case DW_OP_reg11: | |
19504 | case DW_OP_reg12: | |
19505 | case DW_OP_reg13: | |
19506 | case DW_OP_reg14: | |
19507 | case DW_OP_reg15: | |
19508 | case DW_OP_reg16: | |
19509 | case DW_OP_reg17: | |
19510 | case DW_OP_reg18: | |
19511 | case DW_OP_reg19: | |
19512 | case DW_OP_reg20: | |
19513 | case DW_OP_reg21: | |
19514 | case DW_OP_reg22: | |
19515 | case DW_OP_reg23: | |
19516 | case DW_OP_reg24: | |
19517 | case DW_OP_reg25: | |
19518 | case DW_OP_reg26: | |
19519 | case DW_OP_reg27: | |
19520 | case DW_OP_reg28: | |
19521 | case DW_OP_reg29: | |
19522 | case DW_OP_reg30: | |
19523 | case DW_OP_reg31: | |
19524 | stack[++stacki] = op - DW_OP_reg0; | |
19525 | if (i < size) | |
19526 | dwarf2_complex_location_expr_complaint (); | |
19527 | break; | |
c906108c | 19528 | |
21ae7a4d JK |
19529 | case DW_OP_regx: |
19530 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
19531 | i += bytes_read; | |
19532 | stack[++stacki] = unsnd; | |
19533 | if (i < size) | |
19534 | dwarf2_complex_location_expr_complaint (); | |
19535 | break; | |
c906108c | 19536 | |
21ae7a4d JK |
19537 | case DW_OP_addr: |
19538 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
19539 | cu, &bytes_read); | |
19540 | i += bytes_read; | |
19541 | break; | |
d53d4ac5 | 19542 | |
21ae7a4d JK |
19543 | case DW_OP_const1u: |
19544 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
19545 | i += 1; | |
19546 | break; | |
19547 | ||
19548 | case DW_OP_const1s: | |
19549 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
19550 | i += 1; | |
19551 | break; | |
19552 | ||
19553 | case DW_OP_const2u: | |
19554 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
19555 | i += 2; | |
19556 | break; | |
19557 | ||
19558 | case DW_OP_const2s: | |
19559 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
19560 | i += 2; | |
19561 | break; | |
d53d4ac5 | 19562 | |
21ae7a4d JK |
19563 | case DW_OP_const4u: |
19564 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
19565 | i += 4; | |
19566 | break; | |
19567 | ||
19568 | case DW_OP_const4s: | |
19569 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
19570 | i += 4; | |
19571 | break; | |
19572 | ||
585861ea JK |
19573 | case DW_OP_const8u: |
19574 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
19575 | i += 8; | |
19576 | break; | |
19577 | ||
21ae7a4d JK |
19578 | case DW_OP_constu: |
19579 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
19580 | &bytes_read); | |
19581 | i += bytes_read; | |
19582 | break; | |
19583 | ||
19584 | case DW_OP_consts: | |
19585 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
19586 | i += bytes_read; | |
19587 | break; | |
19588 | ||
19589 | case DW_OP_dup: | |
19590 | stack[stacki + 1] = stack[stacki]; | |
19591 | stacki++; | |
19592 | break; | |
19593 | ||
19594 | case DW_OP_plus: | |
19595 | stack[stacki - 1] += stack[stacki]; | |
19596 | stacki--; | |
19597 | break; | |
19598 | ||
19599 | case DW_OP_plus_uconst: | |
19600 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
19601 | &bytes_read); | |
19602 | i += bytes_read; | |
19603 | break; | |
19604 | ||
19605 | case DW_OP_minus: | |
19606 | stack[stacki - 1] -= stack[stacki]; | |
19607 | stacki--; | |
19608 | break; | |
19609 | ||
19610 | case DW_OP_deref: | |
19611 | /* If we're not the last op, then we definitely can't encode | |
19612 | this using GDB's address_class enum. This is valid for partial | |
19613 | global symbols, although the variable's address will be bogus | |
19614 | in the psymtab. */ | |
19615 | if (i < size) | |
19616 | dwarf2_complex_location_expr_complaint (); | |
19617 | break; | |
19618 | ||
19619 | case DW_OP_GNU_push_tls_address: | |
19620 | /* The top of the stack has the offset from the beginning | |
19621 | of the thread control block at which the variable is located. */ | |
19622 | /* Nothing should follow this operator, so the top of stack would | |
19623 | be returned. */ | |
19624 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
19625 | address will be bogus in the psymtab. Make it always at least |
19626 | non-zero to not look as a variable garbage collected by linker | |
19627 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
19628 | if (i < size) |
19629 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 19630 | stack[stacki]++; |
21ae7a4d JK |
19631 | break; |
19632 | ||
19633 | case DW_OP_GNU_uninit: | |
19634 | break; | |
19635 | ||
3019eac3 | 19636 | case DW_OP_GNU_addr_index: |
49f6c839 | 19637 | case DW_OP_GNU_const_index: |
3019eac3 DE |
19638 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
19639 | &bytes_read); | |
19640 | i += bytes_read; | |
19641 | break; | |
19642 | ||
21ae7a4d JK |
19643 | default: |
19644 | { | |
f39c6ffd | 19645 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
19646 | |
19647 | if (name) | |
19648 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
19649 | name); | |
19650 | else | |
19651 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
19652 | op); | |
19653 | } | |
19654 | ||
19655 | return (stack[stacki]); | |
d53d4ac5 | 19656 | } |
3c6e0cb3 | 19657 | |
21ae7a4d JK |
19658 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
19659 | outside of the allocated space. Also enforce minimum>0. */ | |
19660 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
19661 | { | |
19662 | complaint (&symfile_complaints, | |
19663 | _("location description stack overflow")); | |
19664 | return 0; | |
19665 | } | |
19666 | ||
19667 | if (stacki <= 0) | |
19668 | { | |
19669 | complaint (&symfile_complaints, | |
19670 | _("location description stack underflow")); | |
19671 | return 0; | |
19672 | } | |
19673 | } | |
19674 | return (stack[stacki]); | |
c906108c SS |
19675 | } |
19676 | ||
19677 | /* memory allocation interface */ | |
19678 | ||
c906108c | 19679 | static struct dwarf_block * |
7b5a2f43 | 19680 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
19681 | { |
19682 | struct dwarf_block *blk; | |
19683 | ||
19684 | blk = (struct dwarf_block *) | |
7b5a2f43 | 19685 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
19686 | return (blk); |
19687 | } | |
19688 | ||
c906108c | 19689 | static struct die_info * |
b60c80d6 | 19690 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
19691 | { |
19692 | struct die_info *die; | |
b60c80d6 DJ |
19693 | size_t size = sizeof (struct die_info); |
19694 | ||
19695 | if (num_attrs > 1) | |
19696 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 19697 | |
b60c80d6 | 19698 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
19699 | memset (die, 0, sizeof (struct die_info)); |
19700 | return (die); | |
19701 | } | |
2e276125 JB |
19702 | |
19703 | \f | |
19704 | /* Macro support. */ | |
19705 | ||
233d95b5 JK |
19706 | /* Return file name relative to the compilation directory of file number I in |
19707 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 19708 | responsible for freeing it. */ |
233d95b5 | 19709 | |
2e276125 | 19710 | static char * |
233d95b5 | 19711 | file_file_name (int file, struct line_header *lh) |
2e276125 | 19712 | { |
6a83a1e6 EZ |
19713 | /* Is the file number a valid index into the line header's file name |
19714 | table? Remember that file numbers start with one, not zero. */ | |
19715 | if (1 <= file && file <= lh->num_file_names) | |
19716 | { | |
19717 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 19718 | |
233d95b5 | 19719 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0) |
6a83a1e6 | 19720 | return xstrdup (fe->name); |
233d95b5 JK |
19721 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
19722 | fe->name, NULL); | |
6a83a1e6 | 19723 | } |
2e276125 JB |
19724 | else |
19725 | { | |
6a83a1e6 EZ |
19726 | /* The compiler produced a bogus file number. We can at least |
19727 | record the macro definitions made in the file, even if we | |
19728 | won't be able to find the file by name. */ | |
19729 | char fake_name[80]; | |
9a619af0 | 19730 | |
8c042590 PM |
19731 | xsnprintf (fake_name, sizeof (fake_name), |
19732 | "<bad macro file number %d>", file); | |
2e276125 | 19733 | |
6e70227d | 19734 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
19735 | _("bad file number in macro information (%d)"), |
19736 | file); | |
2e276125 | 19737 | |
6a83a1e6 | 19738 | return xstrdup (fake_name); |
2e276125 JB |
19739 | } |
19740 | } | |
19741 | ||
233d95b5 JK |
19742 | /* Return the full name of file number I in *LH's file name table. |
19743 | Use COMP_DIR as the name of the current directory of the | |
19744 | compilation. The result is allocated using xmalloc; the caller is | |
19745 | responsible for freeing it. */ | |
19746 | static char * | |
19747 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
19748 | { | |
19749 | /* Is the file number a valid index into the line header's file name | |
19750 | table? Remember that file numbers start with one, not zero. */ | |
19751 | if (1 <= file && file <= lh->num_file_names) | |
19752 | { | |
19753 | char *relative = file_file_name (file, lh); | |
19754 | ||
19755 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
19756 | return relative; | |
19757 | return reconcat (relative, comp_dir, SLASH_STRING, relative, NULL); | |
19758 | } | |
19759 | else | |
19760 | return file_file_name (file, lh); | |
19761 | } | |
19762 | ||
2e276125 JB |
19763 | |
19764 | static struct macro_source_file * | |
19765 | macro_start_file (int file, int line, | |
19766 | struct macro_source_file *current_file, | |
19767 | const char *comp_dir, | |
19768 | struct line_header *lh, struct objfile *objfile) | |
19769 | { | |
233d95b5 JK |
19770 | /* File name relative to the compilation directory of this source file. */ |
19771 | char *file_name = file_file_name (file, lh); | |
2e276125 | 19772 | |
2e276125 | 19773 | if (! current_file) |
abc9d0dc | 19774 | { |
fc474241 DE |
19775 | /* Note: We don't create a macro table for this compilation unit |
19776 | at all until we actually get a filename. */ | |
19777 | struct macro_table *macro_table = get_macro_table (objfile, comp_dir); | |
19778 | ||
abc9d0dc TT |
19779 | /* If we have no current file, then this must be the start_file |
19780 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
19781 | current_file = macro_set_main (macro_table, file_name); |
19782 | macro_define_special (macro_table); | |
abc9d0dc | 19783 | } |
2e276125 | 19784 | else |
233d95b5 | 19785 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 19786 | |
233d95b5 | 19787 | xfree (file_name); |
6e70227d | 19788 | |
2e276125 JB |
19789 | return current_file; |
19790 | } | |
19791 | ||
19792 | ||
19793 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
19794 | followed by a null byte. */ | |
19795 | static char * | |
19796 | copy_string (const char *buf, int len) | |
19797 | { | |
19798 | char *s = xmalloc (len + 1); | |
9a619af0 | 19799 | |
2e276125 JB |
19800 | memcpy (s, buf, len); |
19801 | s[len] = '\0'; | |
2e276125 JB |
19802 | return s; |
19803 | } | |
19804 | ||
19805 | ||
19806 | static const char * | |
19807 | consume_improper_spaces (const char *p, const char *body) | |
19808 | { | |
19809 | if (*p == ' ') | |
19810 | { | |
4d3c2250 | 19811 | complaint (&symfile_complaints, |
3e43a32a MS |
19812 | _("macro definition contains spaces " |
19813 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 19814 | body); |
2e276125 JB |
19815 | |
19816 | while (*p == ' ') | |
19817 | p++; | |
19818 | } | |
19819 | ||
19820 | return p; | |
19821 | } | |
19822 | ||
19823 | ||
19824 | static void | |
19825 | parse_macro_definition (struct macro_source_file *file, int line, | |
19826 | const char *body) | |
19827 | { | |
19828 | const char *p; | |
19829 | ||
19830 | /* The body string takes one of two forms. For object-like macro | |
19831 | definitions, it should be: | |
19832 | ||
19833 | <macro name> " " <definition> | |
19834 | ||
19835 | For function-like macro definitions, it should be: | |
19836 | ||
19837 | <macro name> "() " <definition> | |
19838 | or | |
19839 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
19840 | ||
19841 | Spaces may appear only where explicitly indicated, and in the | |
19842 | <definition>. | |
19843 | ||
19844 | The Dwarf 2 spec says that an object-like macro's name is always | |
19845 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 19846 | the space when the macro's definition is the empty string. |
2e276125 JB |
19847 | |
19848 | The Dwarf 2 spec says that there should be no spaces between the | |
19849 | formal arguments in a function-like macro's formal argument list, | |
19850 | but versions of GCC around March 2002 include spaces after the | |
19851 | commas. */ | |
19852 | ||
19853 | ||
19854 | /* Find the extent of the macro name. The macro name is terminated | |
19855 | by either a space or null character (for an object-like macro) or | |
19856 | an opening paren (for a function-like macro). */ | |
19857 | for (p = body; *p; p++) | |
19858 | if (*p == ' ' || *p == '(') | |
19859 | break; | |
19860 | ||
19861 | if (*p == ' ' || *p == '\0') | |
19862 | { | |
19863 | /* It's an object-like macro. */ | |
19864 | int name_len = p - body; | |
19865 | char *name = copy_string (body, name_len); | |
19866 | const char *replacement; | |
19867 | ||
19868 | if (*p == ' ') | |
19869 | replacement = body + name_len + 1; | |
19870 | else | |
19871 | { | |
4d3c2250 | 19872 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19873 | replacement = body + name_len; |
19874 | } | |
6e70227d | 19875 | |
2e276125 JB |
19876 | macro_define_object (file, line, name, replacement); |
19877 | ||
19878 | xfree (name); | |
19879 | } | |
19880 | else if (*p == '(') | |
19881 | { | |
19882 | /* It's a function-like macro. */ | |
19883 | char *name = copy_string (body, p - body); | |
19884 | int argc = 0; | |
19885 | int argv_size = 1; | |
19886 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
19887 | ||
19888 | p++; | |
19889 | ||
19890 | p = consume_improper_spaces (p, body); | |
19891 | ||
19892 | /* Parse the formal argument list. */ | |
19893 | while (*p && *p != ')') | |
19894 | { | |
19895 | /* Find the extent of the current argument name. */ | |
19896 | const char *arg_start = p; | |
19897 | ||
19898 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
19899 | p++; | |
19900 | ||
19901 | if (! *p || p == arg_start) | |
4d3c2250 | 19902 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19903 | else |
19904 | { | |
19905 | /* Make sure argv has room for the new argument. */ | |
19906 | if (argc >= argv_size) | |
19907 | { | |
19908 | argv_size *= 2; | |
19909 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
19910 | } | |
19911 | ||
19912 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
19913 | } | |
19914 | ||
19915 | p = consume_improper_spaces (p, body); | |
19916 | ||
19917 | /* Consume the comma, if present. */ | |
19918 | if (*p == ',') | |
19919 | { | |
19920 | p++; | |
19921 | ||
19922 | p = consume_improper_spaces (p, body); | |
19923 | } | |
19924 | } | |
19925 | ||
19926 | if (*p == ')') | |
19927 | { | |
19928 | p++; | |
19929 | ||
19930 | if (*p == ' ') | |
19931 | /* Perfectly formed definition, no complaints. */ | |
19932 | macro_define_function (file, line, name, | |
6e70227d | 19933 | argc, (const char **) argv, |
2e276125 JB |
19934 | p + 1); |
19935 | else if (*p == '\0') | |
19936 | { | |
19937 | /* Complain, but do define it. */ | |
4d3c2250 | 19938 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 19939 | macro_define_function (file, line, name, |
6e70227d | 19940 | argc, (const char **) argv, |
2e276125 JB |
19941 | p); |
19942 | } | |
19943 | else | |
19944 | /* Just complain. */ | |
4d3c2250 | 19945 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19946 | } |
19947 | else | |
19948 | /* Just complain. */ | |
4d3c2250 | 19949 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19950 | |
19951 | xfree (name); | |
19952 | { | |
19953 | int i; | |
19954 | ||
19955 | for (i = 0; i < argc; i++) | |
19956 | xfree (argv[i]); | |
19957 | } | |
19958 | xfree (argv); | |
19959 | } | |
19960 | else | |
4d3c2250 | 19961 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19962 | } |
19963 | ||
cf2c3c16 TT |
19964 | /* Skip some bytes from BYTES according to the form given in FORM. |
19965 | Returns the new pointer. */ | |
2e276125 | 19966 | |
d521ce57 TT |
19967 | static const gdb_byte * |
19968 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
19969 | enum dwarf_form form, |
19970 | unsigned int offset_size, | |
19971 | struct dwarf2_section_info *section) | |
2e276125 | 19972 | { |
cf2c3c16 | 19973 | unsigned int bytes_read; |
2e276125 | 19974 | |
cf2c3c16 | 19975 | switch (form) |
2e276125 | 19976 | { |
cf2c3c16 TT |
19977 | case DW_FORM_data1: |
19978 | case DW_FORM_flag: | |
19979 | ++bytes; | |
19980 | break; | |
19981 | ||
19982 | case DW_FORM_data2: | |
19983 | bytes += 2; | |
19984 | break; | |
19985 | ||
19986 | case DW_FORM_data4: | |
19987 | bytes += 4; | |
19988 | break; | |
19989 | ||
19990 | case DW_FORM_data8: | |
19991 | bytes += 8; | |
19992 | break; | |
19993 | ||
19994 | case DW_FORM_string: | |
19995 | read_direct_string (abfd, bytes, &bytes_read); | |
19996 | bytes += bytes_read; | |
19997 | break; | |
19998 | ||
19999 | case DW_FORM_sec_offset: | |
20000 | case DW_FORM_strp: | |
36586728 | 20001 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
20002 | bytes += offset_size; |
20003 | break; | |
20004 | ||
20005 | case DW_FORM_block: | |
20006 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
20007 | bytes += bytes_read; | |
20008 | break; | |
20009 | ||
20010 | case DW_FORM_block1: | |
20011 | bytes += 1 + read_1_byte (abfd, bytes); | |
20012 | break; | |
20013 | case DW_FORM_block2: | |
20014 | bytes += 2 + read_2_bytes (abfd, bytes); | |
20015 | break; | |
20016 | case DW_FORM_block4: | |
20017 | bytes += 4 + read_4_bytes (abfd, bytes); | |
20018 | break; | |
20019 | ||
20020 | case DW_FORM_sdata: | |
20021 | case DW_FORM_udata: | |
3019eac3 DE |
20022 | case DW_FORM_GNU_addr_index: |
20023 | case DW_FORM_GNU_str_index: | |
d521ce57 | 20024 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
20025 | if (bytes == NULL) |
20026 | { | |
20027 | dwarf2_section_buffer_overflow_complaint (section); | |
20028 | return NULL; | |
20029 | } | |
cf2c3c16 TT |
20030 | break; |
20031 | ||
20032 | default: | |
20033 | { | |
20034 | complain: | |
20035 | complaint (&symfile_complaints, | |
20036 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 20037 | form, get_section_name (section)); |
cf2c3c16 TT |
20038 | return NULL; |
20039 | } | |
2e276125 JB |
20040 | } |
20041 | ||
cf2c3c16 TT |
20042 | return bytes; |
20043 | } | |
757a13d0 | 20044 | |
cf2c3c16 TT |
20045 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
20046 | opcode. Returns an updated pointer to the macro data buffer; or, | |
20047 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 20048 | |
d521ce57 | 20049 | static const gdb_byte * |
cf2c3c16 | 20050 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
20051 | const gdb_byte **opcode_definitions, |
20052 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
20053 | bfd *abfd, |
20054 | unsigned int offset_size, | |
20055 | struct dwarf2_section_info *section) | |
20056 | { | |
20057 | unsigned int bytes_read, i; | |
20058 | unsigned long arg; | |
d521ce57 | 20059 | const gdb_byte *defn; |
2e276125 | 20060 | |
cf2c3c16 | 20061 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 20062 | { |
cf2c3c16 TT |
20063 | complaint (&symfile_complaints, |
20064 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
20065 | opcode); | |
20066 | return NULL; | |
20067 | } | |
2e276125 | 20068 | |
cf2c3c16 TT |
20069 | defn = opcode_definitions[opcode]; |
20070 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
20071 | defn += bytes_read; | |
2e276125 | 20072 | |
cf2c3c16 TT |
20073 | for (i = 0; i < arg; ++i) |
20074 | { | |
f664829e DE |
20075 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
20076 | section); | |
cf2c3c16 TT |
20077 | if (mac_ptr == NULL) |
20078 | { | |
20079 | /* skip_form_bytes already issued the complaint. */ | |
20080 | return NULL; | |
20081 | } | |
20082 | } | |
757a13d0 | 20083 | |
cf2c3c16 TT |
20084 | return mac_ptr; |
20085 | } | |
757a13d0 | 20086 | |
cf2c3c16 TT |
20087 | /* A helper function which parses the header of a macro section. |
20088 | If the macro section is the extended (for now called "GNU") type, | |
20089 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
20090 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 20091 | |
d521ce57 TT |
20092 | static const gdb_byte * |
20093 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 20094 | bfd *abfd, |
d521ce57 | 20095 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
20096 | unsigned int *offset_size, |
20097 | int section_is_gnu) | |
20098 | { | |
20099 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 20100 | |
cf2c3c16 TT |
20101 | if (section_is_gnu) |
20102 | { | |
20103 | unsigned int version, flags; | |
757a13d0 | 20104 | |
cf2c3c16 TT |
20105 | version = read_2_bytes (abfd, mac_ptr); |
20106 | if (version != 4) | |
20107 | { | |
20108 | complaint (&symfile_complaints, | |
20109 | _("unrecognized version `%d' in .debug_macro section"), | |
20110 | version); | |
20111 | return NULL; | |
20112 | } | |
20113 | mac_ptr += 2; | |
757a13d0 | 20114 | |
cf2c3c16 TT |
20115 | flags = read_1_byte (abfd, mac_ptr); |
20116 | ++mac_ptr; | |
20117 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 20118 | |
cf2c3c16 TT |
20119 | if ((flags & 2) != 0) |
20120 | /* We don't need the line table offset. */ | |
20121 | mac_ptr += *offset_size; | |
757a13d0 | 20122 | |
cf2c3c16 TT |
20123 | /* Vendor opcode descriptions. */ |
20124 | if ((flags & 4) != 0) | |
20125 | { | |
20126 | unsigned int i, count; | |
757a13d0 | 20127 | |
cf2c3c16 TT |
20128 | count = read_1_byte (abfd, mac_ptr); |
20129 | ++mac_ptr; | |
20130 | for (i = 0; i < count; ++i) | |
20131 | { | |
20132 | unsigned int opcode, bytes_read; | |
20133 | unsigned long arg; | |
20134 | ||
20135 | opcode = read_1_byte (abfd, mac_ptr); | |
20136 | ++mac_ptr; | |
20137 | opcode_definitions[opcode] = mac_ptr; | |
20138 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20139 | mac_ptr += bytes_read; | |
20140 | mac_ptr += arg; | |
20141 | } | |
757a13d0 | 20142 | } |
cf2c3c16 | 20143 | } |
757a13d0 | 20144 | |
cf2c3c16 TT |
20145 | return mac_ptr; |
20146 | } | |
757a13d0 | 20147 | |
cf2c3c16 | 20148 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 20149 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
20150 | |
20151 | static void | |
d521ce57 TT |
20152 | dwarf_decode_macro_bytes (bfd *abfd, |
20153 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 20154 | struct macro_source_file *current_file, |
15d034d0 | 20155 | struct line_header *lh, const char *comp_dir, |
cf2c3c16 | 20156 | struct dwarf2_section_info *section, |
36586728 | 20157 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 20158 | unsigned int offset_size, |
8fc3fc34 TT |
20159 | struct objfile *objfile, |
20160 | htab_t include_hash) | |
cf2c3c16 TT |
20161 | { |
20162 | enum dwarf_macro_record_type macinfo_type; | |
20163 | int at_commandline; | |
d521ce57 | 20164 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 20165 | |
cf2c3c16 TT |
20166 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
20167 | &offset_size, section_is_gnu); | |
20168 | if (mac_ptr == NULL) | |
20169 | { | |
20170 | /* We already issued a complaint. */ | |
20171 | return; | |
20172 | } | |
757a13d0 JK |
20173 | |
20174 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
20175 | GDB is still reading the definitions from command line. First | |
20176 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
20177 | to create CURRENT_FILE for the main source holding also the command line | |
20178 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
20179 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
20180 | ||
20181 | at_commandline = 1; | |
20182 | ||
20183 | do | |
20184 | { | |
20185 | /* Do we at least have room for a macinfo type byte? */ | |
20186 | if (mac_ptr >= mac_end) | |
20187 | { | |
f664829e | 20188 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
20189 | break; |
20190 | } | |
20191 | ||
20192 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
20193 | mac_ptr++; | |
20194 | ||
cf2c3c16 TT |
20195 | /* Note that we rely on the fact that the corresponding GNU and |
20196 | DWARF constants are the same. */ | |
757a13d0 JK |
20197 | switch (macinfo_type) |
20198 | { | |
20199 | /* A zero macinfo type indicates the end of the macro | |
20200 | information. */ | |
20201 | case 0: | |
20202 | break; | |
2e276125 | 20203 | |
cf2c3c16 TT |
20204 | case DW_MACRO_GNU_define: |
20205 | case DW_MACRO_GNU_undef: | |
20206 | case DW_MACRO_GNU_define_indirect: | |
20207 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
20208 | case DW_MACRO_GNU_define_indirect_alt: |
20209 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 20210 | { |
891d2f0b | 20211 | unsigned int bytes_read; |
2e276125 | 20212 | int line; |
d521ce57 | 20213 | const char *body; |
cf2c3c16 | 20214 | int is_define; |
2e276125 | 20215 | |
cf2c3c16 TT |
20216 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
20217 | mac_ptr += bytes_read; | |
20218 | ||
20219 | if (macinfo_type == DW_MACRO_GNU_define | |
20220 | || macinfo_type == DW_MACRO_GNU_undef) | |
20221 | { | |
20222 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
20223 | mac_ptr += bytes_read; | |
20224 | } | |
20225 | else | |
20226 | { | |
20227 | LONGEST str_offset; | |
20228 | ||
20229 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
20230 | mac_ptr += offset_size; | |
2e276125 | 20231 | |
36586728 | 20232 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
20233 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
20234 | || section_is_dwz) | |
36586728 TT |
20235 | { |
20236 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
20237 | ||
20238 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
20239 | } | |
20240 | else | |
20241 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
20242 | } |
20243 | ||
20244 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
20245 | || macinfo_type == DW_MACRO_GNU_define_indirect |
20246 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 20247 | if (! current_file) |
757a13d0 JK |
20248 | { |
20249 | /* DWARF violation as no main source is present. */ | |
20250 | complaint (&symfile_complaints, | |
20251 | _("debug info with no main source gives macro %s " | |
20252 | "on line %d: %s"), | |
cf2c3c16 TT |
20253 | is_define ? _("definition") : _("undefinition"), |
20254 | line, body); | |
757a13d0 JK |
20255 | break; |
20256 | } | |
3e43a32a MS |
20257 | if ((line == 0 && !at_commandline) |
20258 | || (line != 0 && at_commandline)) | |
4d3c2250 | 20259 | complaint (&symfile_complaints, |
757a13d0 JK |
20260 | _("debug info gives %s macro %s with %s line %d: %s"), |
20261 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 20262 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
20263 | line == 0 ? _("zero") : _("non-zero"), line, body); |
20264 | ||
cf2c3c16 | 20265 | if (is_define) |
757a13d0 | 20266 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
20267 | else |
20268 | { | |
20269 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
20270 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
20271 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
20272 | macro_undef (current_file, line, body); |
20273 | } | |
2e276125 JB |
20274 | } |
20275 | break; | |
20276 | ||
cf2c3c16 | 20277 | case DW_MACRO_GNU_start_file: |
2e276125 | 20278 | { |
891d2f0b | 20279 | unsigned int bytes_read; |
2e276125 JB |
20280 | int line, file; |
20281 | ||
20282 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20283 | mac_ptr += bytes_read; | |
20284 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20285 | mac_ptr += bytes_read; | |
20286 | ||
3e43a32a MS |
20287 | if ((line == 0 && !at_commandline) |
20288 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
20289 | complaint (&symfile_complaints, |
20290 | _("debug info gives source %d included " | |
20291 | "from %s at %s line %d"), | |
20292 | file, at_commandline ? _("command-line") : _("file"), | |
20293 | line == 0 ? _("zero") : _("non-zero"), line); | |
20294 | ||
20295 | if (at_commandline) | |
20296 | { | |
cf2c3c16 TT |
20297 | /* This DW_MACRO_GNU_start_file was executed in the |
20298 | pass one. */ | |
757a13d0 JK |
20299 | at_commandline = 0; |
20300 | } | |
20301 | else | |
20302 | current_file = macro_start_file (file, line, | |
20303 | current_file, comp_dir, | |
cf2c3c16 | 20304 | lh, objfile); |
2e276125 JB |
20305 | } |
20306 | break; | |
20307 | ||
cf2c3c16 | 20308 | case DW_MACRO_GNU_end_file: |
2e276125 | 20309 | if (! current_file) |
4d3c2250 | 20310 | complaint (&symfile_complaints, |
3e43a32a MS |
20311 | _("macro debug info has an unmatched " |
20312 | "`close_file' directive")); | |
2e276125 JB |
20313 | else |
20314 | { | |
20315 | current_file = current_file->included_by; | |
20316 | if (! current_file) | |
20317 | { | |
cf2c3c16 | 20318 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
20319 | |
20320 | /* GCC circa March 2002 doesn't produce the zero | |
20321 | type byte marking the end of the compilation | |
20322 | unit. Complain if it's not there, but exit no | |
20323 | matter what. */ | |
20324 | ||
20325 | /* Do we at least have room for a macinfo type byte? */ | |
20326 | if (mac_ptr >= mac_end) | |
20327 | { | |
f664829e | 20328 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
20329 | return; |
20330 | } | |
20331 | ||
20332 | /* We don't increment mac_ptr here, so this is just | |
20333 | a look-ahead. */ | |
20334 | next_type = read_1_byte (abfd, mac_ptr); | |
20335 | if (next_type != 0) | |
4d3c2250 | 20336 | complaint (&symfile_complaints, |
3e43a32a MS |
20337 | _("no terminating 0-type entry for " |
20338 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
20339 | |
20340 | return; | |
20341 | } | |
20342 | } | |
20343 | break; | |
20344 | ||
cf2c3c16 | 20345 | case DW_MACRO_GNU_transparent_include: |
36586728 | 20346 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
20347 | { |
20348 | LONGEST offset; | |
8fc3fc34 | 20349 | void **slot; |
a036ba48 TT |
20350 | bfd *include_bfd = abfd; |
20351 | struct dwarf2_section_info *include_section = section; | |
20352 | struct dwarf2_section_info alt_section; | |
d521ce57 | 20353 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 20354 | int is_dwz = section_is_dwz; |
d521ce57 | 20355 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
20356 | |
20357 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
20358 | mac_ptr += offset_size; | |
20359 | ||
a036ba48 TT |
20360 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
20361 | { | |
20362 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
20363 | ||
20364 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
20365 | &dwz->macro); | |
20366 | ||
a036ba48 | 20367 | include_section = &dwz->macro; |
a32a8923 | 20368 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
20369 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
20370 | is_dwz = 1; | |
20371 | } | |
20372 | ||
20373 | new_mac_ptr = include_section->buffer + offset; | |
20374 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
20375 | ||
8fc3fc34 TT |
20376 | if (*slot != NULL) |
20377 | { | |
20378 | /* This has actually happened; see | |
20379 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
20380 | complaint (&symfile_complaints, | |
20381 | _("recursive DW_MACRO_GNU_transparent_include in " | |
20382 | ".debug_macro section")); | |
20383 | } | |
20384 | else | |
20385 | { | |
d521ce57 | 20386 | *slot = (void *) new_mac_ptr; |
36586728 | 20387 | |
a036ba48 | 20388 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
36586728 | 20389 | include_mac_end, current_file, |
8fc3fc34 | 20390 | lh, comp_dir, |
36586728 | 20391 | section, section_is_gnu, is_dwz, |
8fc3fc34 TT |
20392 | offset_size, objfile, include_hash); |
20393 | ||
d521ce57 | 20394 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 20395 | } |
cf2c3c16 TT |
20396 | } |
20397 | break; | |
20398 | ||
2e276125 | 20399 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
20400 | if (!section_is_gnu) |
20401 | { | |
20402 | unsigned int bytes_read; | |
20403 | int constant; | |
2e276125 | 20404 | |
cf2c3c16 TT |
20405 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
20406 | mac_ptr += bytes_read; | |
20407 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20408 | mac_ptr += bytes_read; | |
2e276125 | 20409 | |
cf2c3c16 TT |
20410 | /* We don't recognize any vendor extensions. */ |
20411 | break; | |
20412 | } | |
20413 | /* FALLTHROUGH */ | |
20414 | ||
20415 | default: | |
20416 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 20417 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
20418 | section); |
20419 | if (mac_ptr == NULL) | |
20420 | return; | |
20421 | break; | |
2e276125 | 20422 | } |
757a13d0 | 20423 | } while (macinfo_type != 0); |
2e276125 | 20424 | } |
8e19ed76 | 20425 | |
cf2c3c16 | 20426 | static void |
09262596 | 20427 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
15d034d0 | 20428 | const char *comp_dir, int section_is_gnu) |
cf2c3c16 | 20429 | { |
bb5ed363 | 20430 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
20431 | struct line_header *lh = cu->line_header; |
20432 | bfd *abfd; | |
d521ce57 | 20433 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
20434 | struct macro_source_file *current_file = 0; |
20435 | enum dwarf_macro_record_type macinfo_type; | |
20436 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 20437 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 TT |
20438 | struct cleanup *cleanup; |
20439 | htab_t include_hash; | |
20440 | void **slot; | |
09262596 DE |
20441 | struct dwarf2_section_info *section; |
20442 | const char *section_name; | |
20443 | ||
20444 | if (cu->dwo_unit != NULL) | |
20445 | { | |
20446 | if (section_is_gnu) | |
20447 | { | |
20448 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
20449 | section_name = ".debug_macro.dwo"; | |
20450 | } | |
20451 | else | |
20452 | { | |
20453 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
20454 | section_name = ".debug_macinfo.dwo"; | |
20455 | } | |
20456 | } | |
20457 | else | |
20458 | { | |
20459 | if (section_is_gnu) | |
20460 | { | |
20461 | section = &dwarf2_per_objfile->macro; | |
20462 | section_name = ".debug_macro"; | |
20463 | } | |
20464 | else | |
20465 | { | |
20466 | section = &dwarf2_per_objfile->macinfo; | |
20467 | section_name = ".debug_macinfo"; | |
20468 | } | |
20469 | } | |
cf2c3c16 | 20470 | |
bb5ed363 | 20471 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
20472 | if (section->buffer == NULL) |
20473 | { | |
fceca515 | 20474 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
20475 | return; |
20476 | } | |
a32a8923 | 20477 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
20478 | |
20479 | /* First pass: Find the name of the base filename. | |
20480 | This filename is needed in order to process all macros whose definition | |
20481 | (or undefinition) comes from the command line. These macros are defined | |
20482 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
20483 | associated to the base file. | |
20484 | ||
20485 | To determine the base file name, we scan the macro definitions until we | |
20486 | reach the first DW_MACINFO_start_file entry. We then initialize | |
20487 | CURRENT_FILE accordingly so that any macro definition found before the | |
20488 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
20489 | ||
20490 | mac_ptr = section->buffer + offset; | |
20491 | mac_end = section->buffer + section->size; | |
20492 | ||
20493 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
20494 | &offset_size, section_is_gnu); | |
20495 | if (mac_ptr == NULL) | |
20496 | { | |
20497 | /* We already issued a complaint. */ | |
20498 | return; | |
20499 | } | |
20500 | ||
20501 | do | |
20502 | { | |
20503 | /* Do we at least have room for a macinfo type byte? */ | |
20504 | if (mac_ptr >= mac_end) | |
20505 | { | |
20506 | /* Complaint is printed during the second pass as GDB will probably | |
20507 | stop the first pass earlier upon finding | |
20508 | DW_MACINFO_start_file. */ | |
20509 | break; | |
20510 | } | |
20511 | ||
20512 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
20513 | mac_ptr++; | |
20514 | ||
20515 | /* Note that we rely on the fact that the corresponding GNU and | |
20516 | DWARF constants are the same. */ | |
20517 | switch (macinfo_type) | |
20518 | { | |
20519 | /* A zero macinfo type indicates the end of the macro | |
20520 | information. */ | |
20521 | case 0: | |
20522 | break; | |
20523 | ||
20524 | case DW_MACRO_GNU_define: | |
20525 | case DW_MACRO_GNU_undef: | |
20526 | /* Only skip the data by MAC_PTR. */ | |
20527 | { | |
20528 | unsigned int bytes_read; | |
20529 | ||
20530 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20531 | mac_ptr += bytes_read; | |
20532 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20533 | mac_ptr += bytes_read; | |
20534 | } | |
20535 | break; | |
20536 | ||
20537 | case DW_MACRO_GNU_start_file: | |
20538 | { | |
20539 | unsigned int bytes_read; | |
20540 | int line, file; | |
20541 | ||
20542 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20543 | mac_ptr += bytes_read; | |
20544 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20545 | mac_ptr += bytes_read; | |
20546 | ||
20547 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 20548 | comp_dir, lh, objfile); |
cf2c3c16 TT |
20549 | } |
20550 | break; | |
20551 | ||
20552 | case DW_MACRO_GNU_end_file: | |
20553 | /* No data to skip by MAC_PTR. */ | |
20554 | break; | |
20555 | ||
20556 | case DW_MACRO_GNU_define_indirect: | |
20557 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
20558 | case DW_MACRO_GNU_define_indirect_alt: |
20559 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
20560 | { |
20561 | unsigned int bytes_read; | |
20562 | ||
20563 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20564 | mac_ptr += bytes_read; | |
20565 | mac_ptr += offset_size; | |
20566 | } | |
20567 | break; | |
20568 | ||
20569 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 20570 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
20571 | /* Note that, according to the spec, a transparent include |
20572 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
20573 | skip this opcode. */ | |
20574 | mac_ptr += offset_size; | |
20575 | break; | |
20576 | ||
20577 | case DW_MACINFO_vendor_ext: | |
20578 | /* Only skip the data by MAC_PTR. */ | |
20579 | if (!section_is_gnu) | |
20580 | { | |
20581 | unsigned int bytes_read; | |
20582 | ||
20583 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20584 | mac_ptr += bytes_read; | |
20585 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20586 | mac_ptr += bytes_read; | |
20587 | } | |
20588 | /* FALLTHROUGH */ | |
20589 | ||
20590 | default: | |
20591 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 20592 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
20593 | section); |
20594 | if (mac_ptr == NULL) | |
20595 | return; | |
20596 | break; | |
20597 | } | |
20598 | } while (macinfo_type != 0 && current_file == NULL); | |
20599 | ||
20600 | /* Second pass: Process all entries. | |
20601 | ||
20602 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
20603 | command-line macro definitions/undefinitions. This flag is unset when we | |
20604 | reach the first DW_MACINFO_start_file entry. */ | |
20605 | ||
8fc3fc34 TT |
20606 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
20607 | NULL, xcalloc, xfree); | |
20608 | cleanup = make_cleanup_htab_delete (include_hash); | |
20609 | mac_ptr = section->buffer + offset; | |
20610 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
d521ce57 | 20611 | *slot = (void *) mac_ptr; |
8fc3fc34 | 20612 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
36586728 TT |
20613 | current_file, lh, comp_dir, section, |
20614 | section_is_gnu, 0, | |
8fc3fc34 TT |
20615 | offset_size, objfile, include_hash); |
20616 | do_cleanups (cleanup); | |
cf2c3c16 TT |
20617 | } |
20618 | ||
8e19ed76 | 20619 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 20620 | if so return true else false. */ |
380bca97 | 20621 | |
8e19ed76 | 20622 | static int |
6e5a29e1 | 20623 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
20624 | { |
20625 | return (attr == NULL ? 0 : | |
20626 | attr->form == DW_FORM_block1 | |
20627 | || attr->form == DW_FORM_block2 | |
20628 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
20629 | || attr->form == DW_FORM_block |
20630 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 20631 | } |
4c2df51b | 20632 | |
c6a0999f JB |
20633 | /* Return non-zero if ATTR's value is a section offset --- classes |
20634 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
20635 | You may use DW_UNSND (attr) to retrieve such offsets. | |
20636 | ||
20637 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
20638 | may have a value that belongs to more than one of these classes; it | |
20639 | would be ambiguous if we did, because we use the same forms for all | |
20640 | of them. */ | |
380bca97 | 20641 | |
3690dd37 | 20642 | static int |
6e5a29e1 | 20643 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
20644 | { |
20645 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
20646 | || attr->form == DW_FORM_data8 |
20647 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
20648 | } |
20649 | ||
3690dd37 JB |
20650 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
20651 | zero otherwise. When this function returns true, you can apply | |
20652 | dwarf2_get_attr_constant_value to it. | |
20653 | ||
20654 | However, note that for some attributes you must check | |
20655 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
20656 | and DW_FORM_data8 are members of both the constant class, and of | |
20657 | the classes that contain offsets into other debug sections | |
20658 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
20659 | that, if an attribute's can be either a constant or one of the | |
20660 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
20661 | taken as section offsets, not constants. */ | |
380bca97 | 20662 | |
3690dd37 | 20663 | static int |
6e5a29e1 | 20664 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
20665 | { |
20666 | switch (attr->form) | |
20667 | { | |
20668 | case DW_FORM_sdata: | |
20669 | case DW_FORM_udata: | |
20670 | case DW_FORM_data1: | |
20671 | case DW_FORM_data2: | |
20672 | case DW_FORM_data4: | |
20673 | case DW_FORM_data8: | |
20674 | return 1; | |
20675 | default: | |
20676 | return 0; | |
20677 | } | |
20678 | } | |
20679 | ||
7771576e SA |
20680 | |
20681 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
20682 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
20683 | ||
20684 | static int | |
6e5a29e1 | 20685 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
20686 | { |
20687 | switch (attr->form) | |
20688 | { | |
20689 | case DW_FORM_ref_addr: | |
20690 | case DW_FORM_ref1: | |
20691 | case DW_FORM_ref2: | |
20692 | case DW_FORM_ref4: | |
20693 | case DW_FORM_ref8: | |
20694 | case DW_FORM_ref_udata: | |
20695 | case DW_FORM_GNU_ref_alt: | |
20696 | return 1; | |
20697 | default: | |
20698 | return 0; | |
20699 | } | |
20700 | } | |
20701 | ||
3019eac3 DE |
20702 | /* Return the .debug_loc section to use for CU. |
20703 | For DWO files use .debug_loc.dwo. */ | |
20704 | ||
20705 | static struct dwarf2_section_info * | |
20706 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
20707 | { | |
20708 | if (cu->dwo_unit) | |
20709 | return &cu->dwo_unit->dwo_file->sections.loc; | |
20710 | return &dwarf2_per_objfile->loc; | |
20711 | } | |
20712 | ||
8cf6f0b1 TT |
20713 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
20714 | ||
20715 | static void | |
20716 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
20717 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 20718 | const struct attribute *attr) |
8cf6f0b1 | 20719 | { |
3019eac3 DE |
20720 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
20721 | ||
20722 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
20723 | |
20724 | baton->per_cu = cu->per_cu; | |
20725 | gdb_assert (baton->per_cu); | |
20726 | /* We don't know how long the location list is, but make sure we | |
20727 | don't run off the edge of the section. */ | |
3019eac3 DE |
20728 | baton->size = section->size - DW_UNSND (attr); |
20729 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 20730 | baton->base_address = cu->base_address; |
f664829e | 20731 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
20732 | } |
20733 | ||
4c2df51b | 20734 | static void |
ff39bb5e | 20735 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 20736 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 20737 | { |
bb5ed363 | 20738 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 20739 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 20740 | |
3690dd37 | 20741 | if (attr_form_is_section_offset (attr) |
3019eac3 | 20742 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
20743 | the section. If so, fall through to the complaint in the |
20744 | other branch. */ | |
3019eac3 | 20745 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 20746 | { |
0d53c4c4 | 20747 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 20748 | |
bb5ed363 | 20749 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 20750 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 20751 | |
8cf6f0b1 | 20752 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 20753 | |
d00adf39 | 20754 | if (cu->base_known == 0) |
0d53c4c4 | 20755 | complaint (&symfile_complaints, |
3e43a32a MS |
20756 | _("Location list used without " |
20757 | "specifying the CU base address.")); | |
4c2df51b | 20758 | |
f1e6e072 TT |
20759 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
20760 | ? dwarf2_loclist_block_index | |
20761 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
20762 | SYMBOL_LOCATION_BATON (sym) = baton; |
20763 | } | |
20764 | else | |
20765 | { | |
20766 | struct dwarf2_locexpr_baton *baton; | |
20767 | ||
bb5ed363 | 20768 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 20769 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
20770 | baton->per_cu = cu->per_cu; |
20771 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
20772 | |
20773 | if (attr_form_is_block (attr)) | |
20774 | { | |
20775 | /* Note that we're just copying the block's data pointer | |
20776 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
20777 | info_buffer for SYM's objfile; right now we never release |
20778 | that buffer, but when we do clean up properly this may | |
20779 | need to change. */ | |
0d53c4c4 DJ |
20780 | baton->size = DW_BLOCK (attr)->size; |
20781 | baton->data = DW_BLOCK (attr)->data; | |
20782 | } | |
20783 | else | |
20784 | { | |
20785 | dwarf2_invalid_attrib_class_complaint ("location description", | |
20786 | SYMBOL_NATURAL_NAME (sym)); | |
20787 | baton->size = 0; | |
0d53c4c4 | 20788 | } |
6e70227d | 20789 | |
f1e6e072 TT |
20790 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
20791 | ? dwarf2_locexpr_block_index | |
20792 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
20793 | SYMBOL_LOCATION_BATON (sym) = baton; |
20794 | } | |
4c2df51b | 20795 | } |
6502dd73 | 20796 | |
9aa1f1e3 TT |
20797 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
20798 | came from a separate debuginfo file, then the master objfile is | |
20799 | returned. */ | |
ae0d2f24 UW |
20800 | |
20801 | struct objfile * | |
20802 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
20803 | { | |
9291a0cd | 20804 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
20805 | |
20806 | /* Return the master objfile, so that we can report and look up the | |
20807 | correct file containing this variable. */ | |
20808 | if (objfile->separate_debug_objfile_backlink) | |
20809 | objfile = objfile->separate_debug_objfile_backlink; | |
20810 | ||
20811 | return objfile; | |
20812 | } | |
20813 | ||
96408a79 SA |
20814 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
20815 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
20816 | CU_HEADERP first. */ | |
20817 | ||
20818 | static const struct comp_unit_head * | |
20819 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
20820 | struct dwarf2_per_cu_data *per_cu) | |
20821 | { | |
d521ce57 | 20822 | const gdb_byte *info_ptr; |
96408a79 SA |
20823 | |
20824 | if (per_cu->cu) | |
20825 | return &per_cu->cu->header; | |
20826 | ||
8a0459fd | 20827 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
20828 | |
20829 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 20830 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
20831 | |
20832 | return cu_headerp; | |
20833 | } | |
20834 | ||
ae0d2f24 UW |
20835 | /* Return the address size given in the compilation unit header for CU. */ |
20836 | ||
98714339 | 20837 | int |
ae0d2f24 UW |
20838 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
20839 | { | |
96408a79 SA |
20840 | struct comp_unit_head cu_header_local; |
20841 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 20842 | |
96408a79 SA |
20843 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
20844 | ||
20845 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
20846 | } |
20847 | ||
9eae7c52 TT |
20848 | /* Return the offset size given in the compilation unit header for CU. */ |
20849 | ||
20850 | int | |
20851 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
20852 | { | |
96408a79 SA |
20853 | struct comp_unit_head cu_header_local; |
20854 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 20855 | |
96408a79 SA |
20856 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
20857 | ||
20858 | return cu_headerp->offset_size; | |
20859 | } | |
20860 | ||
20861 | /* See its dwarf2loc.h declaration. */ | |
20862 | ||
20863 | int | |
20864 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
20865 | { | |
20866 | struct comp_unit_head cu_header_local; | |
20867 | const struct comp_unit_head *cu_headerp; | |
20868 | ||
20869 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
20870 | ||
20871 | if (cu_headerp->version == 2) | |
20872 | return cu_headerp->addr_size; | |
20873 | else | |
20874 | return cu_headerp->offset_size; | |
181cebd4 JK |
20875 | } |
20876 | ||
9aa1f1e3 TT |
20877 | /* Return the text offset of the CU. The returned offset comes from |
20878 | this CU's objfile. If this objfile came from a separate debuginfo | |
20879 | file, then the offset may be different from the corresponding | |
20880 | offset in the parent objfile. */ | |
20881 | ||
20882 | CORE_ADDR | |
20883 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
20884 | { | |
bb3fa9d0 | 20885 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
20886 | |
20887 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
20888 | } | |
20889 | ||
348e048f DE |
20890 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
20891 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
20892 | |
20893 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 20894 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 20895 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
20896 | struct objfile *objfile) |
20897 | { | |
20898 | struct dwarf2_per_cu_data *this_cu; | |
20899 | int low, high; | |
36586728 | 20900 | const sect_offset *cu_off; |
ae038cb0 | 20901 | |
ae038cb0 DJ |
20902 | low = 0; |
20903 | high = dwarf2_per_objfile->n_comp_units - 1; | |
20904 | while (high > low) | |
20905 | { | |
36586728 | 20906 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 20907 | int mid = low + (high - low) / 2; |
9a619af0 | 20908 | |
36586728 TT |
20909 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
20910 | cu_off = &mid_cu->offset; | |
20911 | if (mid_cu->is_dwz > offset_in_dwz | |
20912 | || (mid_cu->is_dwz == offset_in_dwz | |
20913 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
20914 | high = mid; |
20915 | else | |
20916 | low = mid + 1; | |
20917 | } | |
20918 | gdb_assert (low == high); | |
36586728 TT |
20919 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
20920 | cu_off = &this_cu->offset; | |
20921 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 20922 | { |
36586728 | 20923 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
20924 | error (_("Dwarf Error: could not find partial DIE containing " |
20925 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 20926 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 20927 | |
b64f50a1 JK |
20928 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
20929 | <= offset.sect_off); | |
ae038cb0 DJ |
20930 | return dwarf2_per_objfile->all_comp_units[low-1]; |
20931 | } | |
20932 | else | |
20933 | { | |
20934 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
20935 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
20936 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
20937 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
20938 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
20939 | return this_cu; |
20940 | } | |
20941 | } | |
20942 | ||
23745b47 | 20943 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 20944 | |
9816fde3 | 20945 | static void |
23745b47 | 20946 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 20947 | { |
9816fde3 | 20948 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
20949 | per_cu->cu = cu; |
20950 | cu->per_cu = per_cu; | |
20951 | cu->objfile = per_cu->objfile; | |
93311388 | 20952 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
20953 | } |
20954 | ||
20955 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
20956 | ||
20957 | static void | |
95554aad TT |
20958 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
20959 | enum language pretend_language) | |
9816fde3 JK |
20960 | { |
20961 | struct attribute *attr; | |
20962 | ||
20963 | /* Set the language we're debugging. */ | |
20964 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
20965 | if (attr) | |
20966 | set_cu_language (DW_UNSND (attr), cu); | |
20967 | else | |
9cded63f | 20968 | { |
95554aad | 20969 | cu->language = pretend_language; |
9cded63f TT |
20970 | cu->language_defn = language_def (cu->language); |
20971 | } | |
dee91e82 DE |
20972 | |
20973 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
20974 | if (attr) | |
20975 | cu->producer = DW_STRING (attr); | |
93311388 DE |
20976 | } |
20977 | ||
ae038cb0 DJ |
20978 | /* Release one cached compilation unit, CU. We unlink it from the tree |
20979 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
20980 | the caller is responsible for that. |
20981 | NOTE: DATA is a void * because this function is also used as a | |
20982 | cleanup routine. */ | |
ae038cb0 DJ |
20983 | |
20984 | static void | |
68dc6402 | 20985 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
20986 | { |
20987 | struct dwarf2_cu *cu = data; | |
20988 | ||
23745b47 DE |
20989 | gdb_assert (cu->per_cu != NULL); |
20990 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
20991 | cu->per_cu = NULL; |
20992 | ||
20993 | obstack_free (&cu->comp_unit_obstack, NULL); | |
20994 | ||
20995 | xfree (cu); | |
20996 | } | |
20997 | ||
72bf9492 | 20998 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 20999 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 21000 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
21001 | |
21002 | static void | |
21003 | free_stack_comp_unit (void *data) | |
21004 | { | |
21005 | struct dwarf2_cu *cu = data; | |
21006 | ||
23745b47 DE |
21007 | gdb_assert (cu->per_cu != NULL); |
21008 | cu->per_cu->cu = NULL; | |
21009 | cu->per_cu = NULL; | |
21010 | ||
72bf9492 DJ |
21011 | obstack_free (&cu->comp_unit_obstack, NULL); |
21012 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
21013 | } |
21014 | ||
21015 | /* Free all cached compilation units. */ | |
21016 | ||
21017 | static void | |
21018 | free_cached_comp_units (void *data) | |
21019 | { | |
21020 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21021 | ||
21022 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21023 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21024 | while (per_cu != NULL) | |
21025 | { | |
21026 | struct dwarf2_per_cu_data *next_cu; | |
21027 | ||
21028 | next_cu = per_cu->cu->read_in_chain; | |
21029 | ||
68dc6402 | 21030 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21031 | *last_chain = next_cu; |
21032 | ||
21033 | per_cu = next_cu; | |
21034 | } | |
21035 | } | |
21036 | ||
21037 | /* Increase the age counter on each cached compilation unit, and free | |
21038 | any that are too old. */ | |
21039 | ||
21040 | static void | |
21041 | age_cached_comp_units (void) | |
21042 | { | |
21043 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21044 | ||
21045 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
21046 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21047 | while (per_cu != NULL) | |
21048 | { | |
21049 | per_cu->cu->last_used ++; | |
21050 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
21051 | dwarf2_mark (per_cu->cu); | |
21052 | per_cu = per_cu->cu->read_in_chain; | |
21053 | } | |
21054 | ||
21055 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21056 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21057 | while (per_cu != NULL) | |
21058 | { | |
21059 | struct dwarf2_per_cu_data *next_cu; | |
21060 | ||
21061 | next_cu = per_cu->cu->read_in_chain; | |
21062 | ||
21063 | if (!per_cu->cu->mark) | |
21064 | { | |
68dc6402 | 21065 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21066 | *last_chain = next_cu; |
21067 | } | |
21068 | else | |
21069 | last_chain = &per_cu->cu->read_in_chain; | |
21070 | ||
21071 | per_cu = next_cu; | |
21072 | } | |
21073 | } | |
21074 | ||
21075 | /* Remove a single compilation unit from the cache. */ | |
21076 | ||
21077 | static void | |
dee91e82 | 21078 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
21079 | { |
21080 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21081 | ||
21082 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21083 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21084 | while (per_cu != NULL) | |
21085 | { | |
21086 | struct dwarf2_per_cu_data *next_cu; | |
21087 | ||
21088 | next_cu = per_cu->cu->read_in_chain; | |
21089 | ||
dee91e82 | 21090 | if (per_cu == target_per_cu) |
ae038cb0 | 21091 | { |
68dc6402 | 21092 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 21093 | per_cu->cu = NULL; |
ae038cb0 DJ |
21094 | *last_chain = next_cu; |
21095 | break; | |
21096 | } | |
21097 | else | |
21098 | last_chain = &per_cu->cu->read_in_chain; | |
21099 | ||
21100 | per_cu = next_cu; | |
21101 | } | |
21102 | } | |
21103 | ||
fe3e1990 DJ |
21104 | /* Release all extra memory associated with OBJFILE. */ |
21105 | ||
21106 | void | |
21107 | dwarf2_free_objfile (struct objfile *objfile) | |
21108 | { | |
21109 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
21110 | ||
21111 | if (dwarf2_per_objfile == NULL) | |
21112 | return; | |
21113 | ||
21114 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
21115 | free_cached_comp_units (NULL); | |
21116 | ||
7b9f3c50 DE |
21117 | if (dwarf2_per_objfile->quick_file_names_table) |
21118 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 21119 | |
fe3e1990 DJ |
21120 | /* Everything else should be on the objfile obstack. */ |
21121 | } | |
21122 | ||
dee91e82 DE |
21123 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
21124 | We store these in a hash table separate from the DIEs, and preserve them | |
21125 | when the DIEs are flushed out of cache. | |
21126 | ||
21127 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 21128 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
21129 | or the type may come from a DWO file. Furthermore, while it's more logical |
21130 | to use per_cu->section+offset, with Fission the section with the data is in | |
21131 | the DWO file but we don't know that section at the point we need it. | |
21132 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
21133 | because we can enter the lookup routine, get_die_type_at_offset, from | |
21134 | outside this file, and thus won't necessarily have PER_CU->cu. | |
21135 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 21136 | |
dee91e82 | 21137 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 21138 | { |
dee91e82 | 21139 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 21140 | sect_offset offset; |
1c379e20 DJ |
21141 | struct type *type; |
21142 | }; | |
21143 | ||
dee91e82 | 21144 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
21145 | |
21146 | static hashval_t | |
dee91e82 | 21147 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 21148 | { |
dee91e82 | 21149 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 21150 | |
dee91e82 | 21151 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
21152 | } |
21153 | ||
dee91e82 | 21154 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
21155 | |
21156 | static int | |
dee91e82 | 21157 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 21158 | { |
dee91e82 DE |
21159 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
21160 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 21161 | |
dee91e82 DE |
21162 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
21163 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
21164 | } |
21165 | ||
21166 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
21167 | table if necessary. For convenience, return TYPE. |
21168 | ||
21169 | The DIEs reading must have careful ordering to: | |
21170 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
21171 | reading current DIE. | |
21172 | * Not trying to dereference contents of still incompletely read in types | |
21173 | while reading in other DIEs. | |
21174 | * Enable referencing still incompletely read in types just by a pointer to | |
21175 | the type without accessing its fields. | |
21176 | ||
21177 | Therefore caller should follow these rules: | |
21178 | * Try to fetch any prerequisite types we may need to build this DIE type | |
21179 | before building the type and calling set_die_type. | |
e71ec853 | 21180 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
21181 | possible before fetching more types to complete the current type. |
21182 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 21183 | |
f792889a | 21184 | static struct type * |
1c379e20 DJ |
21185 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
21186 | { | |
dee91e82 | 21187 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 21188 | struct objfile *objfile = cu->objfile; |
1c379e20 | 21189 | |
b4ba55a1 JB |
21190 | /* For Ada types, make sure that the gnat-specific data is always |
21191 | initialized (if not already set). There are a few types where | |
21192 | we should not be doing so, because the type-specific area is | |
21193 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
21194 | where the type-specific area is used to store the floatformat). | |
21195 | But this is not a problem, because the gnat-specific information | |
21196 | is actually not needed for these types. */ | |
21197 | if (need_gnat_info (cu) | |
21198 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
21199 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
21200 | && !HAVE_GNAT_AUX_INFO (type)) | |
21201 | INIT_GNAT_SPECIFIC (type); | |
21202 | ||
dee91e82 | 21203 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 21204 | { |
dee91e82 DE |
21205 | dwarf2_per_objfile->die_type_hash = |
21206 | htab_create_alloc_ex (127, | |
21207 | per_cu_offset_and_type_hash, | |
21208 | per_cu_offset_and_type_eq, | |
21209 | NULL, | |
21210 | &objfile->objfile_obstack, | |
21211 | hashtab_obstack_allocate, | |
21212 | dummy_obstack_deallocate); | |
f792889a | 21213 | } |
1c379e20 | 21214 | |
dee91e82 | 21215 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
21216 | ofs.offset = die->offset; |
21217 | ofs.type = type; | |
dee91e82 DE |
21218 | slot = (struct dwarf2_per_cu_offset_and_type **) |
21219 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
21220 | if (*slot) |
21221 | complaint (&symfile_complaints, | |
21222 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 21223 | die->offset.sect_off); |
673bfd45 | 21224 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 21225 | **slot = ofs; |
f792889a | 21226 | return type; |
1c379e20 DJ |
21227 | } |
21228 | ||
02142a6c DE |
21229 | /* Look up the type for the die at OFFSET in PER_CU in die_type_hash, |
21230 | or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
21231 | |
21232 | static struct type * | |
b64f50a1 | 21233 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 21234 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 21235 | { |
dee91e82 | 21236 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 21237 | |
dee91e82 | 21238 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 21239 | return NULL; |
1c379e20 | 21240 | |
dee91e82 | 21241 | ofs.per_cu = per_cu; |
673bfd45 | 21242 | ofs.offset = offset; |
dee91e82 | 21243 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
21244 | if (slot) |
21245 | return slot->type; | |
21246 | else | |
21247 | return NULL; | |
21248 | } | |
21249 | ||
02142a6c | 21250 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
21251 | or return NULL if DIE does not have a saved type. */ |
21252 | ||
21253 | static struct type * | |
21254 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
21255 | { | |
21256 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
21257 | } | |
21258 | ||
10b3939b DJ |
21259 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
21260 | ||
21261 | static void | |
21262 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
21263 | struct dwarf2_per_cu_data *ref_per_cu) | |
21264 | { | |
21265 | void **slot; | |
21266 | ||
21267 | if (cu->dependencies == NULL) | |
21268 | cu->dependencies | |
21269 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
21270 | NULL, &cu->comp_unit_obstack, | |
21271 | hashtab_obstack_allocate, | |
21272 | dummy_obstack_deallocate); | |
21273 | ||
21274 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
21275 | if (*slot == NULL) | |
21276 | *slot = ref_per_cu; | |
21277 | } | |
1c379e20 | 21278 | |
f504f079 DE |
21279 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
21280 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
21281 | cache that we must keep because we are keeping CU. */ |
21282 | ||
10b3939b DJ |
21283 | static int |
21284 | dwarf2_mark_helper (void **slot, void *data) | |
21285 | { | |
21286 | struct dwarf2_per_cu_data *per_cu; | |
21287 | ||
21288 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
21289 | |
21290 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
21291 | reading of the chain. As such dependencies remain valid it is not much | |
21292 | useful to track and undo them during QUIT cleanups. */ | |
21293 | if (per_cu->cu == NULL) | |
21294 | return 1; | |
21295 | ||
10b3939b DJ |
21296 | if (per_cu->cu->mark) |
21297 | return 1; | |
21298 | per_cu->cu->mark = 1; | |
21299 | ||
21300 | if (per_cu->cu->dependencies != NULL) | |
21301 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
21302 | ||
21303 | return 1; | |
21304 | } | |
21305 | ||
f504f079 DE |
21306 | /* Set the mark field in CU and in every other compilation unit in the |
21307 | cache that we must keep because we are keeping CU. */ | |
21308 | ||
ae038cb0 DJ |
21309 | static void |
21310 | dwarf2_mark (struct dwarf2_cu *cu) | |
21311 | { | |
21312 | if (cu->mark) | |
21313 | return; | |
21314 | cu->mark = 1; | |
10b3939b DJ |
21315 | if (cu->dependencies != NULL) |
21316 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
21317 | } |
21318 | ||
21319 | static void | |
21320 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
21321 | { | |
21322 | while (per_cu) | |
21323 | { | |
21324 | per_cu->cu->mark = 0; | |
21325 | per_cu = per_cu->cu->read_in_chain; | |
21326 | } | |
72bf9492 DJ |
21327 | } |
21328 | ||
72bf9492 DJ |
21329 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
21330 | is its offset in .debug_info for this objfile. */ | |
21331 | ||
21332 | static hashval_t | |
21333 | partial_die_hash (const void *item) | |
21334 | { | |
21335 | const struct partial_die_info *part_die = item; | |
9a619af0 | 21336 | |
b64f50a1 | 21337 | return part_die->offset.sect_off; |
72bf9492 DJ |
21338 | } |
21339 | ||
21340 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
21341 | are equal if they have the same offset. */ | |
21342 | ||
21343 | static int | |
21344 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
21345 | { | |
21346 | const struct partial_die_info *part_die_lhs = item_lhs; | |
21347 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 21348 | |
b64f50a1 | 21349 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
21350 | } |
21351 | ||
ae038cb0 DJ |
21352 | static struct cmd_list_element *set_dwarf2_cmdlist; |
21353 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
21354 | ||
21355 | static void | |
21356 | set_dwarf2_cmd (char *args, int from_tty) | |
21357 | { | |
21358 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
21359 | } | |
21360 | ||
21361 | static void | |
21362 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 21363 | { |
ae038cb0 DJ |
21364 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
21365 | } | |
21366 | ||
4bf44c1c | 21367 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
21368 | |
21369 | static void | |
c1bd65d0 | 21370 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
21371 | { |
21372 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 21373 | int ix; |
8b70b953 | 21374 | |
626f2d1c TT |
21375 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
21376 | cleaning up. */ | |
21377 | dwarf2_per_objfile = NULL; | |
21378 | ||
59b0c7c1 JB |
21379 | for (ix = 0; ix < data->n_comp_units; ++ix) |
21380 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 21381 | |
59b0c7c1 | 21382 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 21383 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
21384 | data->all_type_units[ix]->per_cu.imported_symtabs); |
21385 | xfree (data->all_type_units); | |
95554aad | 21386 | |
8b70b953 | 21387 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
21388 | |
21389 | if (data->dwo_files) | |
21390 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
21391 | if (data->dwp_file) |
21392 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
21393 | |
21394 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
21395 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
21396 | } |
21397 | ||
21398 | \f | |
ae2de4f8 | 21399 | /* The "save gdb-index" command. */ |
9291a0cd TT |
21400 | |
21401 | /* The contents of the hash table we create when building the string | |
21402 | table. */ | |
21403 | struct strtab_entry | |
21404 | { | |
21405 | offset_type offset; | |
21406 | const char *str; | |
21407 | }; | |
21408 | ||
559a7a62 JK |
21409 | /* Hash function for a strtab_entry. |
21410 | ||
21411 | Function is used only during write_hash_table so no index format backward | |
21412 | compatibility is needed. */ | |
b89be57b | 21413 | |
9291a0cd TT |
21414 | static hashval_t |
21415 | hash_strtab_entry (const void *e) | |
21416 | { | |
21417 | const struct strtab_entry *entry = e; | |
559a7a62 | 21418 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
21419 | } |
21420 | ||
21421 | /* Equality function for a strtab_entry. */ | |
b89be57b | 21422 | |
9291a0cd TT |
21423 | static int |
21424 | eq_strtab_entry (const void *a, const void *b) | |
21425 | { | |
21426 | const struct strtab_entry *ea = a; | |
21427 | const struct strtab_entry *eb = b; | |
21428 | return !strcmp (ea->str, eb->str); | |
21429 | } | |
21430 | ||
21431 | /* Create a strtab_entry hash table. */ | |
b89be57b | 21432 | |
9291a0cd TT |
21433 | static htab_t |
21434 | create_strtab (void) | |
21435 | { | |
21436 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
21437 | xfree, xcalloc, xfree); | |
21438 | } | |
21439 | ||
21440 | /* Add a string to the constant pool. Return the string's offset in | |
21441 | host order. */ | |
b89be57b | 21442 | |
9291a0cd TT |
21443 | static offset_type |
21444 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
21445 | { | |
21446 | void **slot; | |
21447 | struct strtab_entry entry; | |
21448 | struct strtab_entry *result; | |
21449 | ||
21450 | entry.str = str; | |
21451 | slot = htab_find_slot (table, &entry, INSERT); | |
21452 | if (*slot) | |
21453 | result = *slot; | |
21454 | else | |
21455 | { | |
21456 | result = XNEW (struct strtab_entry); | |
21457 | result->offset = obstack_object_size (cpool); | |
21458 | result->str = str; | |
21459 | obstack_grow_str0 (cpool, str); | |
21460 | *slot = result; | |
21461 | } | |
21462 | return result->offset; | |
21463 | } | |
21464 | ||
21465 | /* An entry in the symbol table. */ | |
21466 | struct symtab_index_entry | |
21467 | { | |
21468 | /* The name of the symbol. */ | |
21469 | const char *name; | |
21470 | /* The offset of the name in the constant pool. */ | |
21471 | offset_type index_offset; | |
21472 | /* A sorted vector of the indices of all the CUs that hold an object | |
21473 | of this name. */ | |
21474 | VEC (offset_type) *cu_indices; | |
21475 | }; | |
21476 | ||
21477 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
21478 | struct mapped_symtab | |
21479 | { | |
21480 | offset_type n_elements; | |
21481 | offset_type size; | |
21482 | struct symtab_index_entry **data; | |
21483 | }; | |
21484 | ||
21485 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 21486 | |
9291a0cd TT |
21487 | static hashval_t |
21488 | hash_symtab_entry (const void *e) | |
21489 | { | |
21490 | const struct symtab_index_entry *entry = e; | |
21491 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
21492 | sizeof (offset_type) * VEC_length (offset_type, | |
21493 | entry->cu_indices), | |
21494 | 0); | |
21495 | } | |
21496 | ||
21497 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 21498 | |
9291a0cd TT |
21499 | static int |
21500 | eq_symtab_entry (const void *a, const void *b) | |
21501 | { | |
21502 | const struct symtab_index_entry *ea = a; | |
21503 | const struct symtab_index_entry *eb = b; | |
21504 | int len = VEC_length (offset_type, ea->cu_indices); | |
21505 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
21506 | return 0; | |
21507 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
21508 | VEC_address (offset_type, eb->cu_indices), | |
21509 | sizeof (offset_type) * len); | |
21510 | } | |
21511 | ||
21512 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 21513 | |
9291a0cd TT |
21514 | static void |
21515 | delete_symtab_entry (void *p) | |
21516 | { | |
21517 | struct symtab_index_entry *entry = p; | |
21518 | VEC_free (offset_type, entry->cu_indices); | |
21519 | xfree (entry); | |
21520 | } | |
21521 | ||
21522 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 21523 | |
9291a0cd | 21524 | static htab_t |
3876f04e | 21525 | create_symbol_hash_table (void) |
9291a0cd TT |
21526 | { |
21527 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
21528 | delete_symtab_entry, xcalloc, xfree); | |
21529 | } | |
21530 | ||
21531 | /* Create a new mapped symtab object. */ | |
b89be57b | 21532 | |
9291a0cd TT |
21533 | static struct mapped_symtab * |
21534 | create_mapped_symtab (void) | |
21535 | { | |
21536 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
21537 | symtab->n_elements = 0; | |
21538 | symtab->size = 1024; | |
21539 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
21540 | return symtab; | |
21541 | } | |
21542 | ||
21543 | /* Destroy a mapped_symtab. */ | |
b89be57b | 21544 | |
9291a0cd TT |
21545 | static void |
21546 | cleanup_mapped_symtab (void *p) | |
21547 | { | |
21548 | struct mapped_symtab *symtab = p; | |
21549 | /* The contents of the array are freed when the other hash table is | |
21550 | destroyed. */ | |
21551 | xfree (symtab->data); | |
21552 | xfree (symtab); | |
21553 | } | |
21554 | ||
21555 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
21556 | the slot. |
21557 | ||
21558 | Function is used only during write_hash_table so no index format backward | |
21559 | compatibility is needed. */ | |
b89be57b | 21560 | |
9291a0cd TT |
21561 | static struct symtab_index_entry ** |
21562 | find_slot (struct mapped_symtab *symtab, const char *name) | |
21563 | { | |
559a7a62 | 21564 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
21565 | |
21566 | index = hash & (symtab->size - 1); | |
21567 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
21568 | ||
21569 | for (;;) | |
21570 | { | |
21571 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
21572 | return &symtab->data[index]; | |
21573 | index = (index + step) & (symtab->size - 1); | |
21574 | } | |
21575 | } | |
21576 | ||
21577 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 21578 | |
9291a0cd TT |
21579 | static void |
21580 | hash_expand (struct mapped_symtab *symtab) | |
21581 | { | |
21582 | offset_type old_size = symtab->size; | |
21583 | offset_type i; | |
21584 | struct symtab_index_entry **old_entries = symtab->data; | |
21585 | ||
21586 | symtab->size *= 2; | |
21587 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
21588 | ||
21589 | for (i = 0; i < old_size; ++i) | |
21590 | { | |
21591 | if (old_entries[i]) | |
21592 | { | |
21593 | struct symtab_index_entry **slot = find_slot (symtab, | |
21594 | old_entries[i]->name); | |
21595 | *slot = old_entries[i]; | |
21596 | } | |
21597 | } | |
21598 | ||
21599 | xfree (old_entries); | |
21600 | } | |
21601 | ||
156942c7 DE |
21602 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
21603 | CU_INDEX is the index of the CU in which the symbol appears. | |
21604 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 21605 | |
9291a0cd TT |
21606 | static void |
21607 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 21608 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
21609 | offset_type cu_index) |
21610 | { | |
21611 | struct symtab_index_entry **slot; | |
156942c7 | 21612 | offset_type cu_index_and_attrs; |
9291a0cd TT |
21613 | |
21614 | ++symtab->n_elements; | |
21615 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
21616 | hash_expand (symtab); | |
21617 | ||
21618 | slot = find_slot (symtab, name); | |
21619 | if (!*slot) | |
21620 | { | |
21621 | *slot = XNEW (struct symtab_index_entry); | |
21622 | (*slot)->name = name; | |
156942c7 | 21623 | /* index_offset is set later. */ |
9291a0cd TT |
21624 | (*slot)->cu_indices = NULL; |
21625 | } | |
156942c7 DE |
21626 | |
21627 | cu_index_and_attrs = 0; | |
21628 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
21629 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
21630 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
21631 | ||
21632 | /* We don't want to record an index value twice as we want to avoid the | |
21633 | duplication. | |
21634 | We process all global symbols and then all static symbols | |
21635 | (which would allow us to avoid the duplication by only having to check | |
21636 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
21637 | To keep things simple we don't worry about the duplication here and | |
21638 | sort and uniqufy the list after we've processed all symbols. */ | |
21639 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
21640 | } | |
21641 | ||
21642 | /* qsort helper routine for uniquify_cu_indices. */ | |
21643 | ||
21644 | static int | |
21645 | offset_type_compare (const void *ap, const void *bp) | |
21646 | { | |
21647 | offset_type a = *(offset_type *) ap; | |
21648 | offset_type b = *(offset_type *) bp; | |
21649 | ||
21650 | return (a > b) - (b > a); | |
21651 | } | |
21652 | ||
21653 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
21654 | ||
21655 | static void | |
21656 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
21657 | { | |
21658 | int i; | |
21659 | ||
21660 | for (i = 0; i < symtab->size; ++i) | |
21661 | { | |
21662 | struct symtab_index_entry *entry = symtab->data[i]; | |
21663 | ||
21664 | if (entry | |
21665 | && entry->cu_indices != NULL) | |
21666 | { | |
21667 | unsigned int next_to_insert, next_to_check; | |
21668 | offset_type last_value; | |
21669 | ||
21670 | qsort (VEC_address (offset_type, entry->cu_indices), | |
21671 | VEC_length (offset_type, entry->cu_indices), | |
21672 | sizeof (offset_type), offset_type_compare); | |
21673 | ||
21674 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
21675 | next_to_insert = 1; | |
21676 | for (next_to_check = 1; | |
21677 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
21678 | ++next_to_check) | |
21679 | { | |
21680 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
21681 | != last_value) | |
21682 | { | |
21683 | last_value = VEC_index (offset_type, entry->cu_indices, | |
21684 | next_to_check); | |
21685 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
21686 | last_value); | |
21687 | ++next_to_insert; | |
21688 | } | |
21689 | } | |
21690 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
21691 | } | |
21692 | } | |
9291a0cd TT |
21693 | } |
21694 | ||
21695 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 21696 | |
9291a0cd | 21697 | static offset_type |
3876f04e | 21698 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
21699 | struct symtab_index_entry *entry) |
21700 | { | |
21701 | void **slot; | |
21702 | ||
3876f04e | 21703 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
21704 | if (!*slot) |
21705 | { | |
21706 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
21707 | offset_type val = MAYBE_SWAP (len); | |
21708 | offset_type iter; | |
21709 | int i; | |
21710 | ||
21711 | *slot = entry; | |
21712 | entry->index_offset = obstack_object_size (cpool); | |
21713 | ||
21714 | obstack_grow (cpool, &val, sizeof (val)); | |
21715 | for (i = 0; | |
21716 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
21717 | ++i) | |
21718 | { | |
21719 | val = MAYBE_SWAP (iter); | |
21720 | obstack_grow (cpool, &val, sizeof (val)); | |
21721 | } | |
21722 | } | |
21723 | else | |
21724 | { | |
21725 | struct symtab_index_entry *old_entry = *slot; | |
21726 | entry->index_offset = old_entry->index_offset; | |
21727 | entry = old_entry; | |
21728 | } | |
21729 | return entry->index_offset; | |
21730 | } | |
21731 | ||
21732 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
21733 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 21734 | |
9291a0cd TT |
21735 | static void |
21736 | write_hash_table (struct mapped_symtab *symtab, | |
21737 | struct obstack *output, struct obstack *cpool) | |
21738 | { | |
21739 | offset_type i; | |
3876f04e | 21740 | htab_t symbol_hash_table; |
9291a0cd TT |
21741 | htab_t str_table; |
21742 | ||
3876f04e | 21743 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 21744 | str_table = create_strtab (); |
3876f04e | 21745 | |
9291a0cd TT |
21746 | /* We add all the index vectors to the constant pool first, to |
21747 | ensure alignment is ok. */ | |
21748 | for (i = 0; i < symtab->size; ++i) | |
21749 | { | |
21750 | if (symtab->data[i]) | |
3876f04e | 21751 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
21752 | } |
21753 | ||
21754 | /* Now write out the hash table. */ | |
21755 | for (i = 0; i < symtab->size; ++i) | |
21756 | { | |
21757 | offset_type str_off, vec_off; | |
21758 | ||
21759 | if (symtab->data[i]) | |
21760 | { | |
21761 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
21762 | vec_off = symtab->data[i]->index_offset; | |
21763 | } | |
21764 | else | |
21765 | { | |
21766 | /* While 0 is a valid constant pool index, it is not valid | |
21767 | to have 0 for both offsets. */ | |
21768 | str_off = 0; | |
21769 | vec_off = 0; | |
21770 | } | |
21771 | ||
21772 | str_off = MAYBE_SWAP (str_off); | |
21773 | vec_off = MAYBE_SWAP (vec_off); | |
21774 | ||
21775 | obstack_grow (output, &str_off, sizeof (str_off)); | |
21776 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
21777 | } | |
21778 | ||
21779 | htab_delete (str_table); | |
3876f04e | 21780 | htab_delete (symbol_hash_table); |
9291a0cd TT |
21781 | } |
21782 | ||
0a5429f6 DE |
21783 | /* Struct to map psymtab to CU index in the index file. */ |
21784 | struct psymtab_cu_index_map | |
21785 | { | |
21786 | struct partial_symtab *psymtab; | |
21787 | unsigned int cu_index; | |
21788 | }; | |
21789 | ||
21790 | static hashval_t | |
21791 | hash_psymtab_cu_index (const void *item) | |
21792 | { | |
21793 | const struct psymtab_cu_index_map *map = item; | |
21794 | ||
21795 | return htab_hash_pointer (map->psymtab); | |
21796 | } | |
21797 | ||
21798 | static int | |
21799 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
21800 | { | |
21801 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
21802 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
21803 | ||
21804 | return lhs->psymtab == rhs->psymtab; | |
21805 | } | |
21806 | ||
21807 | /* Helper struct for building the address table. */ | |
21808 | struct addrmap_index_data | |
21809 | { | |
21810 | struct objfile *objfile; | |
21811 | struct obstack *addr_obstack; | |
21812 | htab_t cu_index_htab; | |
21813 | ||
21814 | /* Non-zero if the previous_* fields are valid. | |
21815 | We can't write an entry until we see the next entry (since it is only then | |
21816 | that we know the end of the entry). */ | |
21817 | int previous_valid; | |
21818 | /* Index of the CU in the table of all CUs in the index file. */ | |
21819 | unsigned int previous_cu_index; | |
0963b4bd | 21820 | /* Start address of the CU. */ |
0a5429f6 DE |
21821 | CORE_ADDR previous_cu_start; |
21822 | }; | |
21823 | ||
21824 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 21825 | |
9291a0cd | 21826 | static void |
0a5429f6 DE |
21827 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
21828 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 21829 | { |
0a5429f6 | 21830 | offset_type cu_index_to_write; |
948f8e3d | 21831 | gdb_byte addr[8]; |
9291a0cd TT |
21832 | CORE_ADDR baseaddr; |
21833 | ||
21834 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
21835 | ||
0a5429f6 DE |
21836 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
21837 | obstack_grow (obstack, addr, 8); | |
21838 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
21839 | obstack_grow (obstack, addr, 8); | |
21840 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
21841 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
21842 | } | |
21843 | ||
21844 | /* Worker function for traversing an addrmap to build the address table. */ | |
21845 | ||
21846 | static int | |
21847 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
21848 | { | |
21849 | struct addrmap_index_data *data = datap; | |
21850 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
21851 | |
21852 | if (data->previous_valid) | |
21853 | add_address_entry (data->objfile, data->addr_obstack, | |
21854 | data->previous_cu_start, start_addr, | |
21855 | data->previous_cu_index); | |
21856 | ||
21857 | data->previous_cu_start = start_addr; | |
21858 | if (pst != NULL) | |
21859 | { | |
21860 | struct psymtab_cu_index_map find_map, *map; | |
21861 | find_map.psymtab = pst; | |
21862 | map = htab_find (data->cu_index_htab, &find_map); | |
21863 | gdb_assert (map != NULL); | |
21864 | data->previous_cu_index = map->cu_index; | |
21865 | data->previous_valid = 1; | |
21866 | } | |
21867 | else | |
21868 | data->previous_valid = 0; | |
21869 | ||
21870 | return 0; | |
21871 | } | |
21872 | ||
21873 | /* Write OBJFILE's address map to OBSTACK. | |
21874 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
21875 | in the index file. */ | |
21876 | ||
21877 | static void | |
21878 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
21879 | htab_t cu_index_htab) | |
21880 | { | |
21881 | struct addrmap_index_data addrmap_index_data; | |
21882 | ||
21883 | /* When writing the address table, we have to cope with the fact that | |
21884 | the addrmap iterator only provides the start of a region; we have to | |
21885 | wait until the next invocation to get the start of the next region. */ | |
21886 | ||
21887 | addrmap_index_data.objfile = objfile; | |
21888 | addrmap_index_data.addr_obstack = obstack; | |
21889 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
21890 | addrmap_index_data.previous_valid = 0; | |
21891 | ||
21892 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
21893 | &addrmap_index_data); | |
21894 | ||
21895 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
21896 | is valid, but we should still handle it. | |
21897 | The end address is recorded as the start of the next region, but that | |
21898 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
21899 | anyway. */ | |
21900 | if (addrmap_index_data.previous_valid) | |
21901 | add_address_entry (objfile, obstack, | |
21902 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
21903 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
21904 | } |
21905 | ||
156942c7 DE |
21906 | /* Return the symbol kind of PSYM. */ |
21907 | ||
21908 | static gdb_index_symbol_kind | |
21909 | symbol_kind (struct partial_symbol *psym) | |
21910 | { | |
21911 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
21912 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
21913 | ||
21914 | switch (domain) | |
21915 | { | |
21916 | case VAR_DOMAIN: | |
21917 | switch (aclass) | |
21918 | { | |
21919 | case LOC_BLOCK: | |
21920 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
21921 | case LOC_TYPEDEF: | |
21922 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
21923 | case LOC_COMPUTED: | |
21924 | case LOC_CONST_BYTES: | |
21925 | case LOC_OPTIMIZED_OUT: | |
21926 | case LOC_STATIC: | |
21927 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
21928 | case LOC_CONST: | |
21929 | /* Note: It's currently impossible to recognize psyms as enum values | |
21930 | short of reading the type info. For now punt. */ | |
21931 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
21932 | default: | |
21933 | /* There are other LOC_FOO values that one might want to classify | |
21934 | as variables, but dwarf2read.c doesn't currently use them. */ | |
21935 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
21936 | } | |
21937 | case STRUCT_DOMAIN: | |
21938 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
21939 | default: | |
21940 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
21941 | } | |
21942 | } | |
21943 | ||
9291a0cd | 21944 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 21945 | |
9291a0cd TT |
21946 | static void |
21947 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 21948 | htab_t psyms_seen, |
9291a0cd TT |
21949 | struct partial_symbol **psymp, |
21950 | int count, | |
987d643c TT |
21951 | offset_type cu_index, |
21952 | int is_static) | |
9291a0cd TT |
21953 | { |
21954 | for (; count-- > 0; ++psymp) | |
21955 | { | |
156942c7 DE |
21956 | struct partial_symbol *psym = *psymp; |
21957 | void **slot; | |
987d643c | 21958 | |
156942c7 | 21959 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 21960 | error (_("Ada is not currently supported by the index")); |
987d643c | 21961 | |
987d643c | 21962 | /* Only add a given psymbol once. */ |
156942c7 | 21963 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
21964 | if (!*slot) |
21965 | { | |
156942c7 DE |
21966 | gdb_index_symbol_kind kind = symbol_kind (psym); |
21967 | ||
21968 | *slot = psym; | |
21969 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
21970 | is_static, kind, cu_index); | |
987d643c | 21971 | } |
9291a0cd TT |
21972 | } |
21973 | } | |
21974 | ||
21975 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
21976 | exception if there is an error. */ | |
b89be57b | 21977 | |
9291a0cd TT |
21978 | static void |
21979 | write_obstack (FILE *file, struct obstack *obstack) | |
21980 | { | |
21981 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
21982 | file) | |
21983 | != obstack_object_size (obstack)) | |
21984 | error (_("couldn't data write to file")); | |
21985 | } | |
21986 | ||
21987 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 21988 | |
9291a0cd TT |
21989 | static void |
21990 | unlink_if_set (void *p) | |
21991 | { | |
21992 | char **filename = p; | |
21993 | if (*filename) | |
21994 | unlink (*filename); | |
21995 | } | |
21996 | ||
1fd400ff TT |
21997 | /* A helper struct used when iterating over debug_types. */ |
21998 | struct signatured_type_index_data | |
21999 | { | |
22000 | struct objfile *objfile; | |
22001 | struct mapped_symtab *symtab; | |
22002 | struct obstack *types_list; | |
987d643c | 22003 | htab_t psyms_seen; |
1fd400ff TT |
22004 | int cu_index; |
22005 | }; | |
22006 | ||
22007 | /* A helper function that writes a single signatured_type to an | |
22008 | obstack. */ | |
b89be57b | 22009 | |
1fd400ff TT |
22010 | static int |
22011 | write_one_signatured_type (void **slot, void *d) | |
22012 | { | |
22013 | struct signatured_type_index_data *info = d; | |
22014 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
0186c6a7 | 22015 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
22016 | gdb_byte val[8]; |
22017 | ||
22018 | write_psymbols (info->symtab, | |
987d643c | 22019 | info->psyms_seen, |
3e43a32a MS |
22020 | info->objfile->global_psymbols.list |
22021 | + psymtab->globals_offset, | |
987d643c TT |
22022 | psymtab->n_global_syms, info->cu_index, |
22023 | 0); | |
1fd400ff | 22024 | write_psymbols (info->symtab, |
987d643c | 22025 | info->psyms_seen, |
3e43a32a MS |
22026 | info->objfile->static_psymbols.list |
22027 | + psymtab->statics_offset, | |
987d643c TT |
22028 | psymtab->n_static_syms, info->cu_index, |
22029 | 1); | |
1fd400ff | 22030 | |
b64f50a1 JK |
22031 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22032 | entry->per_cu.offset.sect_off); | |
1fd400ff | 22033 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
22034 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22035 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
22036 | obstack_grow (info->types_list, val, 8); |
22037 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
22038 | obstack_grow (info->types_list, val, 8); | |
22039 | ||
22040 | ++info->cu_index; | |
22041 | ||
22042 | return 1; | |
22043 | } | |
22044 | ||
95554aad TT |
22045 | /* Recurse into all "included" dependencies and write their symbols as |
22046 | if they appeared in this psymtab. */ | |
22047 | ||
22048 | static void | |
22049 | recursively_write_psymbols (struct objfile *objfile, | |
22050 | struct partial_symtab *psymtab, | |
22051 | struct mapped_symtab *symtab, | |
22052 | htab_t psyms_seen, | |
22053 | offset_type cu_index) | |
22054 | { | |
22055 | int i; | |
22056 | ||
22057 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
22058 | if (psymtab->dependencies[i]->user != NULL) | |
22059 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
22060 | symtab, psyms_seen, cu_index); | |
22061 | ||
22062 | write_psymbols (symtab, | |
22063 | psyms_seen, | |
22064 | objfile->global_psymbols.list + psymtab->globals_offset, | |
22065 | psymtab->n_global_syms, cu_index, | |
22066 | 0); | |
22067 | write_psymbols (symtab, | |
22068 | psyms_seen, | |
22069 | objfile->static_psymbols.list + psymtab->statics_offset, | |
22070 | psymtab->n_static_syms, cu_index, | |
22071 | 1); | |
22072 | } | |
22073 | ||
9291a0cd | 22074 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 22075 | |
9291a0cd TT |
22076 | static void |
22077 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
22078 | { | |
22079 | struct cleanup *cleanup; | |
22080 | char *filename, *cleanup_filename; | |
1fd400ff TT |
22081 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
22082 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
22083 | int i; |
22084 | FILE *out_file; | |
22085 | struct mapped_symtab *symtab; | |
22086 | offset_type val, size_of_contents, total_len; | |
22087 | struct stat st; | |
987d643c | 22088 | htab_t psyms_seen; |
0a5429f6 DE |
22089 | htab_t cu_index_htab; |
22090 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 22091 | |
9291a0cd TT |
22092 | if (dwarf2_per_objfile->using_index) |
22093 | error (_("Cannot use an index to create the index")); | |
22094 | ||
8b70b953 TT |
22095 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
22096 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
22097 | ||
260b681b DE |
22098 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
22099 | return; | |
22100 | ||
4262abfb JK |
22101 | if (stat (objfile_name (objfile), &st) < 0) |
22102 | perror_with_name (objfile_name (objfile)); | |
9291a0cd | 22103 | |
4262abfb | 22104 | filename = concat (dir, SLASH_STRING, lbasename (objfile_name (objfile)), |
9291a0cd TT |
22105 | INDEX_SUFFIX, (char *) NULL); |
22106 | cleanup = make_cleanup (xfree, filename); | |
22107 | ||
614c279d | 22108 | out_file = gdb_fopen_cloexec (filename, "wb"); |
9291a0cd TT |
22109 | if (!out_file) |
22110 | error (_("Can't open `%s' for writing"), filename); | |
22111 | ||
22112 | cleanup_filename = filename; | |
22113 | make_cleanup (unlink_if_set, &cleanup_filename); | |
22114 | ||
22115 | symtab = create_mapped_symtab (); | |
22116 | make_cleanup (cleanup_mapped_symtab, symtab); | |
22117 | ||
22118 | obstack_init (&addr_obstack); | |
22119 | make_cleanup_obstack_free (&addr_obstack); | |
22120 | ||
22121 | obstack_init (&cu_list); | |
22122 | make_cleanup_obstack_free (&cu_list); | |
22123 | ||
1fd400ff TT |
22124 | obstack_init (&types_cu_list); |
22125 | make_cleanup_obstack_free (&types_cu_list); | |
22126 | ||
987d643c TT |
22127 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
22128 | NULL, xcalloc, xfree); | |
96408a79 | 22129 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 22130 | |
0a5429f6 DE |
22131 | /* While we're scanning CU's create a table that maps a psymtab pointer |
22132 | (which is what addrmap records) to its index (which is what is recorded | |
22133 | in the index file). This will later be needed to write the address | |
22134 | table. */ | |
22135 | cu_index_htab = htab_create_alloc (100, | |
22136 | hash_psymtab_cu_index, | |
22137 | eq_psymtab_cu_index, | |
22138 | NULL, xcalloc, xfree); | |
96408a79 | 22139 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
22140 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
22141 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
22142 | * dwarf2_per_objfile->n_comp_units); | |
22143 | make_cleanup (xfree, psymtab_cu_index_map); | |
22144 | ||
22145 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
22146 | work here. Also, the debug_types entries do not appear in |
22147 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
22148 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
22149 | { | |
3e43a32a MS |
22150 | struct dwarf2_per_cu_data *per_cu |
22151 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 22152 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 22153 | gdb_byte val[8]; |
0a5429f6 DE |
22154 | struct psymtab_cu_index_map *map; |
22155 | void **slot; | |
9291a0cd | 22156 | |
92fac807 JK |
22157 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
22158 | It may be referenced from a local scope but in such case it does not | |
22159 | need to be present in .gdb_index. */ | |
22160 | if (psymtab == NULL) | |
22161 | continue; | |
22162 | ||
95554aad TT |
22163 | if (psymtab->user == NULL) |
22164 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 22165 | |
0a5429f6 DE |
22166 | map = &psymtab_cu_index_map[i]; |
22167 | map->psymtab = psymtab; | |
22168 | map->cu_index = i; | |
22169 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
22170 | gdb_assert (slot != NULL); | |
22171 | gdb_assert (*slot == NULL); | |
22172 | *slot = map; | |
9291a0cd | 22173 | |
b64f50a1 JK |
22174 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22175 | per_cu->offset.sect_off); | |
9291a0cd | 22176 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 22177 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
22178 | obstack_grow (&cu_list, val, 8); |
22179 | } | |
22180 | ||
0a5429f6 DE |
22181 | /* Dump the address map. */ |
22182 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
22183 | ||
1fd400ff TT |
22184 | /* Write out the .debug_type entries, if any. */ |
22185 | if (dwarf2_per_objfile->signatured_types) | |
22186 | { | |
22187 | struct signatured_type_index_data sig_data; | |
22188 | ||
22189 | sig_data.objfile = objfile; | |
22190 | sig_data.symtab = symtab; | |
22191 | sig_data.types_list = &types_cu_list; | |
987d643c | 22192 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
22193 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
22194 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
22195 | write_one_signatured_type, &sig_data); | |
22196 | } | |
22197 | ||
156942c7 DE |
22198 | /* Now that we've processed all symbols we can shrink their cu_indices |
22199 | lists. */ | |
22200 | uniquify_cu_indices (symtab); | |
22201 | ||
9291a0cd TT |
22202 | obstack_init (&constant_pool); |
22203 | make_cleanup_obstack_free (&constant_pool); | |
22204 | obstack_init (&symtab_obstack); | |
22205 | make_cleanup_obstack_free (&symtab_obstack); | |
22206 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
22207 | ||
22208 | obstack_init (&contents); | |
22209 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 22210 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
22211 | total_len = size_of_contents; |
22212 | ||
22213 | /* The version number. */ | |
796a7ff8 | 22214 | val = MAYBE_SWAP (8); |
9291a0cd TT |
22215 | obstack_grow (&contents, &val, sizeof (val)); |
22216 | ||
22217 | /* The offset of the CU list from the start of the file. */ | |
22218 | val = MAYBE_SWAP (total_len); | |
22219 | obstack_grow (&contents, &val, sizeof (val)); | |
22220 | total_len += obstack_object_size (&cu_list); | |
22221 | ||
1fd400ff TT |
22222 | /* The offset of the types CU list from the start of the file. */ |
22223 | val = MAYBE_SWAP (total_len); | |
22224 | obstack_grow (&contents, &val, sizeof (val)); | |
22225 | total_len += obstack_object_size (&types_cu_list); | |
22226 | ||
9291a0cd TT |
22227 | /* The offset of the address table from the start of the file. */ |
22228 | val = MAYBE_SWAP (total_len); | |
22229 | obstack_grow (&contents, &val, sizeof (val)); | |
22230 | total_len += obstack_object_size (&addr_obstack); | |
22231 | ||
22232 | /* The offset of the symbol table from the start of the file. */ | |
22233 | val = MAYBE_SWAP (total_len); | |
22234 | obstack_grow (&contents, &val, sizeof (val)); | |
22235 | total_len += obstack_object_size (&symtab_obstack); | |
22236 | ||
22237 | /* The offset of the constant pool from the start of the file. */ | |
22238 | val = MAYBE_SWAP (total_len); | |
22239 | obstack_grow (&contents, &val, sizeof (val)); | |
22240 | total_len += obstack_object_size (&constant_pool); | |
22241 | ||
22242 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
22243 | ||
22244 | write_obstack (out_file, &contents); | |
22245 | write_obstack (out_file, &cu_list); | |
1fd400ff | 22246 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
22247 | write_obstack (out_file, &addr_obstack); |
22248 | write_obstack (out_file, &symtab_obstack); | |
22249 | write_obstack (out_file, &constant_pool); | |
22250 | ||
22251 | fclose (out_file); | |
22252 | ||
22253 | /* We want to keep the file, so we set cleanup_filename to NULL | |
22254 | here. See unlink_if_set. */ | |
22255 | cleanup_filename = NULL; | |
22256 | ||
22257 | do_cleanups (cleanup); | |
22258 | } | |
22259 | ||
90476074 TT |
22260 | /* Implementation of the `save gdb-index' command. |
22261 | ||
22262 | Note that the file format used by this command is documented in the | |
22263 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 22264 | |
9291a0cd TT |
22265 | static void |
22266 | save_gdb_index_command (char *arg, int from_tty) | |
22267 | { | |
22268 | struct objfile *objfile; | |
22269 | ||
22270 | if (!arg || !*arg) | |
96d19272 | 22271 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
22272 | |
22273 | ALL_OBJFILES (objfile) | |
22274 | { | |
22275 | struct stat st; | |
22276 | ||
22277 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 22278 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
22279 | continue; |
22280 | ||
22281 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
22282 | if (dwarf2_per_objfile) | |
22283 | { | |
22284 | volatile struct gdb_exception except; | |
22285 | ||
22286 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
22287 | { | |
22288 | write_psymtabs_to_index (objfile, arg); | |
22289 | } | |
22290 | if (except.reason < 0) | |
22291 | exception_fprintf (gdb_stderr, except, | |
22292 | _("Error while writing index for `%s': "), | |
4262abfb | 22293 | objfile_name (objfile)); |
9291a0cd TT |
22294 | } |
22295 | } | |
dce234bc PP |
22296 | } |
22297 | ||
9291a0cd TT |
22298 | \f |
22299 | ||
9eae7c52 TT |
22300 | int dwarf2_always_disassemble; |
22301 | ||
22302 | static void | |
22303 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
22304 | struct cmd_list_element *c, const char *value) | |
22305 | { | |
3e43a32a MS |
22306 | fprintf_filtered (file, |
22307 | _("Whether to always disassemble " | |
22308 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
22309 | value); |
22310 | } | |
22311 | ||
900e11f9 JK |
22312 | static void |
22313 | show_check_physname (struct ui_file *file, int from_tty, | |
22314 | struct cmd_list_element *c, const char *value) | |
22315 | { | |
22316 | fprintf_filtered (file, | |
22317 | _("Whether to check \"physname\" is %s.\n"), | |
22318 | value); | |
22319 | } | |
22320 | ||
6502dd73 DJ |
22321 | void _initialize_dwarf2_read (void); |
22322 | ||
22323 | void | |
22324 | _initialize_dwarf2_read (void) | |
22325 | { | |
96d19272 JK |
22326 | struct cmd_list_element *c; |
22327 | ||
dce234bc | 22328 | dwarf2_objfile_data_key |
c1bd65d0 | 22329 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 22330 | |
1bedd215 AC |
22331 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
22332 | Set DWARF 2 specific variables.\n\ | |
22333 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
22334 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
22335 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
22336 | ||
1bedd215 AC |
22337 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
22338 | Show DWARF 2 specific variables\n\ | |
22339 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
22340 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
22341 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
22342 | ||
22343 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
22344 | &dwarf2_max_cache_age, _("\ |
22345 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
22346 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
22347 | A higher limit means that cached compilation units will be stored\n\ | |
22348 | in memory longer, and more total memory will be used. Zero disables\n\ | |
22349 | caching, which can slow down startup."), | |
2c5b56ce | 22350 | NULL, |
920d2a44 | 22351 | show_dwarf2_max_cache_age, |
2c5b56ce | 22352 | &set_dwarf2_cmdlist, |
ae038cb0 | 22353 | &show_dwarf2_cmdlist); |
d97bc12b | 22354 | |
9eae7c52 TT |
22355 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
22356 | &dwarf2_always_disassemble, _("\ | |
22357 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
22358 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
22359 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
22360 | syntax. When disabled, expressions will be printed in a more\n\ | |
22361 | conversational style, when possible."), | |
22362 | NULL, | |
22363 | show_dwarf2_always_disassemble, | |
22364 | &set_dwarf2_cmdlist, | |
22365 | &show_dwarf2_cmdlist); | |
22366 | ||
45cfd468 DE |
22367 | add_setshow_boolean_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
22368 | Set debugging of the dwarf2 reader."), _("\ | |
22369 | Show debugging of the dwarf2 reader."), _("\ | |
22370 | When enabled, debugging messages are printed during dwarf2 reading\n\ | |
22371 | and symtab expansion."), | |
22372 | NULL, | |
22373 | NULL, | |
22374 | &setdebuglist, &showdebuglist); | |
22375 | ||
ccce17b0 | 22376 | add_setshow_zuinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
d97bc12b DE |
22377 | Set debugging of the dwarf2 DIE reader."), _("\ |
22378 | Show debugging of the dwarf2 DIE reader."), _("\ | |
22379 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
22380 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
22381 | NULL, |
22382 | NULL, | |
22383 | &setdebuglist, &showdebuglist); | |
9291a0cd | 22384 | |
900e11f9 JK |
22385 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
22386 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
22387 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
22388 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
22389 | the demangler."), | |
22390 | NULL, show_check_physname, | |
22391 | &setdebuglist, &showdebuglist); | |
22392 | ||
e615022a DE |
22393 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
22394 | no_class, &use_deprecated_index_sections, _("\ | |
22395 | Set whether to use deprecated gdb_index sections."), _("\ | |
22396 | Show whether to use deprecated gdb_index sections."), _("\ | |
22397 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
22398 | Normally they are ignored either because of a missing feature or\n\ | |
22399 | performance issue.\n\ | |
22400 | Warning: This option must be enabled before gdb reads the file."), | |
22401 | NULL, | |
22402 | NULL, | |
22403 | &setlist, &showlist); | |
22404 | ||
96d19272 | 22405 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 22406 | _("\ |
fc1a9d6e | 22407 | Save a gdb-index file.\n\ |
11570e71 | 22408 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
22409 | &save_cmdlist); |
22410 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
22411 | |
22412 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
22413 | &dwarf2_locexpr_funcs); | |
22414 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
22415 | &dwarf2_loclist_funcs); | |
22416 | ||
22417 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
22418 | &dwarf2_block_frame_base_locexpr_funcs); | |
22419 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
22420 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 22421 | } |