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" |
4c2df51b | 72 | |
c906108c SS |
73 | #include <fcntl.h> |
74 | #include "gdb_string.h" | |
4bdf3d34 | 75 | #include "gdb_assert.h" |
c906108c | 76 | #include <sys/types.h> |
d8151005 | 77 | |
34eaf542 TT |
78 | typedef struct symbol *symbolp; |
79 | DEF_VEC_P (symbolp); | |
80 | ||
45cfd468 DE |
81 | /* When non-zero, print basic high level tracing messages. |
82 | This is in contrast to the low level DIE reading of dwarf2_die_debug. */ | |
83 | static int dwarf2_read_debug = 0; | |
84 | ||
d97bc12b | 85 | /* When non-zero, dump DIEs after they are read in. */ |
ccce17b0 | 86 | static unsigned int dwarf2_die_debug = 0; |
d97bc12b | 87 | |
900e11f9 JK |
88 | /* When non-zero, cross-check physname against demangler. */ |
89 | static int check_physname = 0; | |
90 | ||
481860b3 | 91 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 92 | static int use_deprecated_index_sections = 0; |
481860b3 | 93 | |
6502dd73 DJ |
94 | static const struct objfile_data *dwarf2_objfile_data_key; |
95 | ||
f1e6e072 TT |
96 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
97 | ||
98 | static int dwarf2_locexpr_index; | |
99 | static int dwarf2_loclist_index; | |
100 | static int dwarf2_locexpr_block_index; | |
101 | static int dwarf2_loclist_block_index; | |
102 | ||
73869dc2 DE |
103 | /* A descriptor for dwarf sections. |
104 | ||
105 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
106 | scanned. BUFFER, READIN are filled in later when the section is read. | |
107 | If the section contained compressed data then SIZE is updated to record | |
108 | the uncompressed size of the section. | |
109 | ||
110 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
111 | creating the concept of virtual sections contained within a real section. | |
112 | In DWP V2 the sections of the input DWO files are concatenated together | |
113 | into one section, but section offsets are kept relative to the original | |
114 | input section. | |
115 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
116 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
117 | describe the virtual section. */ | |
118 | ||
dce234bc PP |
119 | struct dwarf2_section_info |
120 | { | |
73869dc2 DE |
121 | union |
122 | { | |
e5aa3347 | 123 | /* If this is a real section, the bfd section. */ |
73869dc2 DE |
124 | asection *asection; |
125 | /* If this is a virtual section, pointer to the containing ("real") | |
e5aa3347 | 126 | section. */ |
73869dc2 DE |
127 | struct dwarf2_section_info *containing_section; |
128 | } s; | |
19ac8c2e | 129 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 130 | const gdb_byte *buffer; |
73869dc2 | 131 | /* The size of the section, real or virtual. */ |
dce234bc | 132 | bfd_size_type size; |
73869dc2 DE |
133 | /* If this is a virtual section, the offset in the real section. |
134 | Only valid if is_virtual. */ | |
135 | bfd_size_type virtual_offset; | |
be391dca | 136 | /* True if we have tried to read this section. */ |
73869dc2 DE |
137 | char readin; |
138 | /* True if this is a virtual section, False otherwise. | |
139 | This specifies which of s.asection and s.containing_section to use. */ | |
140 | char is_virtual; | |
dce234bc PP |
141 | }; |
142 | ||
8b70b953 TT |
143 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
144 | DEF_VEC_O (dwarf2_section_info_def); | |
145 | ||
9291a0cd TT |
146 | /* All offsets in the index are of this type. It must be |
147 | architecture-independent. */ | |
148 | typedef uint32_t offset_type; | |
149 | ||
150 | DEF_VEC_I (offset_type); | |
151 | ||
156942c7 DE |
152 | /* Ensure only legit values are used. */ |
153 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
154 | do { \ | |
155 | gdb_assert ((unsigned int) (value) <= 1); \ | |
156 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
157 | } while (0) | |
158 | ||
159 | /* Ensure only legit values are used. */ | |
160 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
161 | do { \ | |
162 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
163 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
164 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
165 | } while (0) | |
166 | ||
167 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
168 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
169 | do { \ | |
170 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
171 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
172 | } while (0) | |
173 | ||
9291a0cd TT |
174 | /* A description of the mapped index. The file format is described in |
175 | a comment by the code that writes the index. */ | |
176 | struct mapped_index | |
177 | { | |
559a7a62 JK |
178 | /* Index data format version. */ |
179 | int version; | |
180 | ||
9291a0cd TT |
181 | /* The total length of the buffer. */ |
182 | off_t total_size; | |
b11b1f88 | 183 | |
9291a0cd TT |
184 | /* A pointer to the address table data. */ |
185 | const gdb_byte *address_table; | |
b11b1f88 | 186 | |
9291a0cd TT |
187 | /* Size of the address table data in bytes. */ |
188 | offset_type address_table_size; | |
b11b1f88 | 189 | |
3876f04e DE |
190 | /* The symbol table, implemented as a hash table. */ |
191 | const offset_type *symbol_table; | |
b11b1f88 | 192 | |
9291a0cd | 193 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 194 | offset_type symbol_table_slots; |
b11b1f88 | 195 | |
9291a0cd TT |
196 | /* A pointer to the constant pool. */ |
197 | const char *constant_pool; | |
198 | }; | |
199 | ||
95554aad TT |
200 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
201 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
202 | ||
9cdd5dbd DE |
203 | /* Collection of data recorded per objfile. |
204 | This hangs off of dwarf2_objfile_data_key. */ | |
205 | ||
6502dd73 DJ |
206 | struct dwarf2_per_objfile |
207 | { | |
dce234bc PP |
208 | struct dwarf2_section_info info; |
209 | struct dwarf2_section_info abbrev; | |
210 | struct dwarf2_section_info line; | |
dce234bc PP |
211 | struct dwarf2_section_info loc; |
212 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 213 | struct dwarf2_section_info macro; |
dce234bc PP |
214 | struct dwarf2_section_info str; |
215 | struct dwarf2_section_info ranges; | |
3019eac3 | 216 | struct dwarf2_section_info addr; |
dce234bc PP |
217 | struct dwarf2_section_info frame; |
218 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 219 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 220 | |
8b70b953 TT |
221 | VEC (dwarf2_section_info_def) *types; |
222 | ||
be391dca TT |
223 | /* Back link. */ |
224 | struct objfile *objfile; | |
225 | ||
d467dd73 | 226 | /* Table of all the compilation units. This is used to locate |
10b3939b | 227 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
228 | struct dwarf2_per_cu_data **all_comp_units; |
229 | ||
230 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
231 | int n_comp_units; | |
232 | ||
1fd400ff | 233 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 234 | int n_type_units; |
1fd400ff | 235 | |
a2ce51a0 DE |
236 | /* The .debug_types-related CUs (TUs). |
237 | This is stored in malloc space because we may realloc it. */ | |
b4dd5633 | 238 | struct signatured_type **all_type_units; |
1fd400ff | 239 | |
f4dc4d17 DE |
240 | /* The number of entries in all_type_unit_groups. */ |
241 | int n_type_unit_groups; | |
242 | ||
243 | /* Table of type unit groups. | |
244 | This exists to make it easy to iterate over all CUs and TU groups. */ | |
245 | struct type_unit_group **all_type_unit_groups; | |
246 | ||
247 | /* Table of struct type_unit_group objects. | |
248 | The hash key is the DW_AT_stmt_list value. */ | |
249 | htab_t type_unit_groups; | |
72dca2f5 | 250 | |
348e048f DE |
251 | /* A table mapping .debug_types signatures to its signatured_type entry. |
252 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
253 | htab_t signatured_types; | |
254 | ||
f4dc4d17 DE |
255 | /* Type unit statistics, to see how well the scaling improvements |
256 | are doing. */ | |
257 | struct tu_stats | |
258 | { | |
259 | int nr_uniq_abbrev_tables; | |
260 | int nr_symtabs; | |
261 | int nr_symtab_sharers; | |
262 | int nr_stmt_less_type_units; | |
263 | } tu_stats; | |
264 | ||
265 | /* A chain of compilation units that are currently read in, so that | |
266 | they can be freed later. */ | |
267 | struct dwarf2_per_cu_data *read_in_chain; | |
268 | ||
3019eac3 DE |
269 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
270 | This is NULL if the table hasn't been allocated yet. */ | |
271 | htab_t dwo_files; | |
272 | ||
80626a55 DE |
273 | /* Non-zero if we've check for whether there is a DWP file. */ |
274 | int dwp_checked; | |
275 | ||
276 | /* The DWP file if there is one, or NULL. */ | |
277 | struct dwp_file *dwp_file; | |
278 | ||
36586728 TT |
279 | /* The shared '.dwz' file, if one exists. This is used when the |
280 | original data was compressed using 'dwz -m'. */ | |
281 | struct dwz_file *dwz_file; | |
282 | ||
72dca2f5 FR |
283 | /* A flag indicating wether this objfile has a section loaded at a |
284 | VMA of 0. */ | |
285 | int has_section_at_zero; | |
9291a0cd | 286 | |
ae2de4f8 DE |
287 | /* True if we are using the mapped index, |
288 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
289 | unsigned char using_index; |
290 | ||
ae2de4f8 | 291 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 292 | struct mapped_index *index_table; |
98bfdba5 | 293 | |
7b9f3c50 | 294 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
295 | TUs typically share line table entries with a CU, so we maintain a |
296 | separate table of all line table entries to support the sharing. | |
297 | Note that while there can be way more TUs than CUs, we've already | |
298 | sorted all the TUs into "type unit groups", grouped by their | |
299 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
300 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
301 | htab_t quick_file_names_table; |
302 | ||
98bfdba5 PA |
303 | /* Set during partial symbol reading, to prevent queueing of full |
304 | symbols. */ | |
305 | int reading_partial_symbols; | |
673bfd45 | 306 | |
dee91e82 | 307 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 308 | This is NULL if not allocated yet. |
02142a6c | 309 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
dee91e82 | 310 | htab_t die_type_hash; |
95554aad TT |
311 | |
312 | /* The CUs we recently read. */ | |
313 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
6502dd73 DJ |
314 | }; |
315 | ||
316 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 317 | |
251d32d9 | 318 | /* Default names of the debugging sections. */ |
c906108c | 319 | |
233a11ab CS |
320 | /* Note that if the debugging section has been compressed, it might |
321 | have a name like .zdebug_info. */ | |
322 | ||
9cdd5dbd DE |
323 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
324 | { | |
251d32d9 TG |
325 | { ".debug_info", ".zdebug_info" }, |
326 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
327 | { ".debug_line", ".zdebug_line" }, | |
328 | { ".debug_loc", ".zdebug_loc" }, | |
329 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 330 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
331 | { ".debug_str", ".zdebug_str" }, |
332 | { ".debug_ranges", ".zdebug_ranges" }, | |
333 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 334 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
335 | { ".debug_frame", ".zdebug_frame" }, |
336 | { ".eh_frame", NULL }, | |
24d3216f TT |
337 | { ".gdb_index", ".zgdb_index" }, |
338 | 23 | |
251d32d9 | 339 | }; |
c906108c | 340 | |
80626a55 | 341 | /* List of DWO/DWP sections. */ |
3019eac3 | 342 | |
80626a55 | 343 | static const struct dwop_section_names |
3019eac3 DE |
344 | { |
345 | struct dwarf2_section_names abbrev_dwo; | |
346 | struct dwarf2_section_names info_dwo; | |
347 | struct dwarf2_section_names line_dwo; | |
348 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
349 | struct dwarf2_section_names macinfo_dwo; |
350 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
351 | struct dwarf2_section_names str_dwo; |
352 | struct dwarf2_section_names str_offsets_dwo; | |
353 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
354 | struct dwarf2_section_names cu_index; |
355 | struct dwarf2_section_names tu_index; | |
3019eac3 | 356 | } |
80626a55 | 357 | dwop_section_names = |
3019eac3 DE |
358 | { |
359 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
360 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
361 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
362 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
363 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
364 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
365 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
366 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
367 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
368 | { ".debug_cu_index", ".zdebug_cu_index" }, |
369 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
370 | }; |
371 | ||
c906108c SS |
372 | /* local data types */ |
373 | ||
107d2387 AC |
374 | /* The data in a compilation unit header, after target2host |
375 | translation, looks like this. */ | |
c906108c | 376 | struct comp_unit_head |
a738430d | 377 | { |
c764a876 | 378 | unsigned int length; |
a738430d | 379 | short version; |
a738430d MK |
380 | unsigned char addr_size; |
381 | unsigned char signed_addr_p; | |
b64f50a1 | 382 | sect_offset abbrev_offset; |
57349743 | 383 | |
a738430d MK |
384 | /* Size of file offsets; either 4 or 8. */ |
385 | unsigned int offset_size; | |
57349743 | 386 | |
a738430d MK |
387 | /* Size of the length field; either 4 or 12. */ |
388 | unsigned int initial_length_size; | |
57349743 | 389 | |
a738430d MK |
390 | /* Offset to the first byte of this compilation unit header in the |
391 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 392 | sect_offset offset; |
57349743 | 393 | |
d00adf39 DE |
394 | /* Offset to first die in this cu from the start of the cu. |
395 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 396 | cu_offset first_die_offset; |
a738430d | 397 | }; |
c906108c | 398 | |
3da10d80 KS |
399 | /* Type used for delaying computation of method physnames. |
400 | See comments for compute_delayed_physnames. */ | |
401 | struct delayed_method_info | |
402 | { | |
403 | /* The type to which the method is attached, i.e., its parent class. */ | |
404 | struct type *type; | |
405 | ||
406 | /* The index of the method in the type's function fieldlists. */ | |
407 | int fnfield_index; | |
408 | ||
409 | /* The index of the method in the fieldlist. */ | |
410 | int index; | |
411 | ||
412 | /* The name of the DIE. */ | |
413 | const char *name; | |
414 | ||
415 | /* The DIE associated with this method. */ | |
416 | struct die_info *die; | |
417 | }; | |
418 | ||
419 | typedef struct delayed_method_info delayed_method_info; | |
420 | DEF_VEC_O (delayed_method_info); | |
421 | ||
e7c27a73 DJ |
422 | /* Internal state when decoding a particular compilation unit. */ |
423 | struct dwarf2_cu | |
424 | { | |
425 | /* The objfile containing this compilation unit. */ | |
426 | struct objfile *objfile; | |
427 | ||
d00adf39 | 428 | /* The header of the compilation unit. */ |
e7c27a73 | 429 | struct comp_unit_head header; |
e142c38c | 430 | |
d00adf39 DE |
431 | /* Base address of this compilation unit. */ |
432 | CORE_ADDR base_address; | |
433 | ||
434 | /* Non-zero if base_address has been set. */ | |
435 | int base_known; | |
436 | ||
e142c38c DJ |
437 | /* The language we are debugging. */ |
438 | enum language language; | |
439 | const struct language_defn *language_defn; | |
440 | ||
b0f35d58 DL |
441 | const char *producer; |
442 | ||
e142c38c DJ |
443 | /* The generic symbol table building routines have separate lists for |
444 | file scope symbols and all all other scopes (local scopes). So | |
445 | we need to select the right one to pass to add_symbol_to_list(). | |
446 | We do it by keeping a pointer to the correct list in list_in_scope. | |
447 | ||
448 | FIXME: The original dwarf code just treated the file scope as the | |
449 | first local scope, and all other local scopes as nested local | |
450 | scopes, and worked fine. Check to see if we really need to | |
451 | distinguish these in buildsym.c. */ | |
452 | struct pending **list_in_scope; | |
453 | ||
433df2d4 DE |
454 | /* The abbrev table for this CU. |
455 | Normally this points to the abbrev table in the objfile. | |
456 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
457 | struct abbrev_table *abbrev_table; | |
72bf9492 | 458 | |
b64f50a1 JK |
459 | /* Hash table holding all the loaded partial DIEs |
460 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
461 | htab_t partial_dies; |
462 | ||
463 | /* Storage for things with the same lifetime as this read-in compilation | |
464 | unit, including partial DIEs. */ | |
465 | struct obstack comp_unit_obstack; | |
466 | ||
ae038cb0 DJ |
467 | /* When multiple dwarf2_cu structures are living in memory, this field |
468 | chains them all together, so that they can be released efficiently. | |
469 | We will probably also want a generation counter so that most-recently-used | |
470 | compilation units are cached... */ | |
471 | struct dwarf2_per_cu_data *read_in_chain; | |
472 | ||
69d751e3 | 473 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
474 | struct dwarf2_per_cu_data *per_cu; |
475 | ||
476 | /* How many compilation units ago was this CU last referenced? */ | |
477 | int last_used; | |
478 | ||
b64f50a1 JK |
479 | /* A hash table of DIE cu_offset for following references with |
480 | die_info->offset.sect_off as hash. */ | |
51545339 | 481 | htab_t die_hash; |
10b3939b DJ |
482 | |
483 | /* Full DIEs if read in. */ | |
484 | struct die_info *dies; | |
485 | ||
486 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
487 | units referenced by this one. Only set during full symbol processing; | |
488 | partial symbol tables do not have dependencies. */ | |
489 | htab_t dependencies; | |
490 | ||
cb1df416 DJ |
491 | /* Header data from the line table, during full symbol processing. */ |
492 | struct line_header *line_header; | |
493 | ||
3da10d80 KS |
494 | /* A list of methods which need to have physnames computed |
495 | after all type information has been read. */ | |
496 | VEC (delayed_method_info) *method_list; | |
497 | ||
96408a79 SA |
498 | /* To be copied to symtab->call_site_htab. */ |
499 | htab_t call_site_htab; | |
500 | ||
034e5797 DE |
501 | /* Non-NULL if this CU came from a DWO file. |
502 | There is an invariant here that is important to remember: | |
503 | Except for attributes copied from the top level DIE in the "main" | |
504 | (or "stub") file in preparation for reading the DWO file | |
505 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
506 | Either there isn't a DWO file (in which case this is NULL and the point | |
507 | is moot), or there is and either we're not going to read it (in which | |
508 | case this is NULL) or there is and we are reading it (in which case this | |
509 | is non-NULL). */ | |
3019eac3 DE |
510 | struct dwo_unit *dwo_unit; |
511 | ||
512 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
513 | (zero is a valid value though). | |
514 | Note this value comes from the stub CU/TU's DIE. */ | |
515 | ULONGEST addr_base; | |
516 | ||
2e3cf129 DE |
517 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
518 | (zero is a valid value though). | |
519 | Note this value comes from the stub CU/TU's DIE. | |
520 | Also note that the value is zero in the non-DWO case so this value can | |
ab435259 DE |
521 | be used without needing to know whether DWO files are in use or not. |
522 | N.B. This does not apply to DW_AT_ranges appearing in | |
523 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
524 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
525 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
526 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
527 | ULONGEST ranges_base; |
528 | ||
ae038cb0 DJ |
529 | /* Mark used when releasing cached dies. */ |
530 | unsigned int mark : 1; | |
531 | ||
8be455d7 JK |
532 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
533 | This test is imperfect as there may exist optimized debug code not using | |
534 | any location list and still facing inlining issues if handled as | |
535 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 536 | unsigned int has_loclist : 1; |
ba919b58 | 537 | |
1b80a9fa JK |
538 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
539 | if all the producer_is_* fields are valid. This information is cached | |
540 | because profiling CU expansion showed excessive time spent in | |
541 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
542 | unsigned int checked_producer : 1; |
543 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 544 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 545 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
546 | |
547 | /* When set, the file that we're processing is known to have | |
548 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
549 | this information, but later versions do. */ | |
550 | ||
551 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
552 | }; |
553 | ||
10b3939b DJ |
554 | /* Persistent data held for a compilation unit, even when not |
555 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 556 | read_symtab_private field of the psymtab. */ |
10b3939b | 557 | |
ae038cb0 DJ |
558 | struct dwarf2_per_cu_data |
559 | { | |
36586728 | 560 | /* The start offset and length of this compilation unit. |
45452591 | 561 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
562 | initial_length_size. |
563 | If the DIE refers to a DWO file, this is always of the original die, | |
564 | not the DWO file. */ | |
b64f50a1 | 565 | sect_offset offset; |
36586728 | 566 | unsigned int length; |
ae038cb0 DJ |
567 | |
568 | /* Flag indicating this compilation unit will be read in before | |
569 | any of the current compilation units are processed. */ | |
c764a876 | 570 | unsigned int queued : 1; |
ae038cb0 | 571 | |
0d99eb77 DE |
572 | /* This flag will be set when reading partial DIEs if we need to load |
573 | absolutely all DIEs for this compilation unit, instead of just the ones | |
574 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
575 | hash table and don't find it. */ |
576 | unsigned int load_all_dies : 1; | |
577 | ||
0186c6a7 DE |
578 | /* Non-zero if this CU is from .debug_types. |
579 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
580 | this is non-zero. */ | |
3019eac3 DE |
581 | unsigned int is_debug_types : 1; |
582 | ||
36586728 TT |
583 | /* Non-zero if this CU is from the .dwz file. */ |
584 | unsigned int is_dwz : 1; | |
585 | ||
a2ce51a0 DE |
586 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
587 | This flag is only valid if is_debug_types is true. | |
588 | We can't read a CU directly from a DWO file: There are required | |
589 | attributes in the stub. */ | |
590 | unsigned int reading_dwo_directly : 1; | |
591 | ||
7ee85ab1 DE |
592 | /* Non-zero if the TU has been read. |
593 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
594 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
595 | fetching them from random other DWOs (due to comdat folding). | |
596 | If the TU has already been read, the optimization is unnecessary | |
597 | (and unwise - we don't want to change where gdb thinks the TU lives | |
598 | "midflight"). | |
599 | This flag is only valid if is_debug_types is true. */ | |
600 | unsigned int tu_read : 1; | |
601 | ||
3019eac3 DE |
602 | /* The section this CU/TU lives in. |
603 | If the DIE refers to a DWO file, this is always the original die, | |
604 | not the DWO file. */ | |
8a0459fd | 605 | struct dwarf2_section_info *section; |
348e048f | 606 | |
17ea53c3 JK |
607 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
608 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 609 | struct dwarf2_cu *cu; |
1c379e20 | 610 | |
9cdd5dbd DE |
611 | /* The corresponding objfile. |
612 | Normally we can get the objfile from dwarf2_per_objfile. | |
613 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
614 | struct objfile *objfile; |
615 | ||
616 | /* When using partial symbol tables, the 'psymtab' field is active. | |
617 | Otherwise the 'quick' field is active. */ | |
618 | union | |
619 | { | |
620 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 621 | or NULL for unread partial units. */ |
9291a0cd TT |
622 | struct partial_symtab *psymtab; |
623 | ||
624 | /* Data needed by the "quick" functions. */ | |
625 | struct dwarf2_per_cu_quick_data *quick; | |
626 | } v; | |
95554aad | 627 | |
796a7ff8 DE |
628 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
629 | while reading psymtabs, used to compute the psymtab dependencies, | |
630 | and then cleared. Then it is filled in again while reading full | |
631 | symbols, and only deleted when the objfile is destroyed. | |
632 | ||
633 | This is also used to work around a difference between the way gold | |
634 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
635 | is a gold bug. For symbols coming from TUs, gold records in the index | |
636 | the CU that includes the TU instead of the TU itself. This breaks | |
637 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
638 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
639 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
640 | we need to look in TU Z to find X. Fortunately, this is akin to | |
641 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
642 | .gdb_index version <=7 this also records the TUs that the CU referred | |
643 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
644 | indices so we only pay a price for gold generated indices. |
645 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 646 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
647 | }; |
648 | ||
348e048f DE |
649 | /* Entry in the signatured_types hash table. */ |
650 | ||
651 | struct signatured_type | |
652 | { | |
42e7ad6c | 653 | /* The "per_cu" object of this type. |
ac9ec31b | 654 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
655 | N.B.: This is the first member so that it's easy to convert pointers |
656 | between them. */ | |
657 | struct dwarf2_per_cu_data per_cu; | |
658 | ||
3019eac3 | 659 | /* The type's signature. */ |
348e048f DE |
660 | ULONGEST signature; |
661 | ||
3019eac3 | 662 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
663 | If this TU is a DWO stub and the definition lives in a DWO file |
664 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
665 | cu_offset type_offset_in_tu; |
666 | ||
667 | /* Offset in the section of the type's DIE. | |
668 | If the definition lives in a DWO file, this is the offset in the | |
669 | .debug_types.dwo section. | |
670 | The value is zero until the actual value is known. | |
671 | Zero is otherwise not a valid section offset. */ | |
672 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
673 | |
674 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
675 | can share them. This points to the containing symtab. */ | |
676 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
677 | |
678 | /* The type. | |
679 | The first time we encounter this type we fully read it in and install it | |
680 | in the symbol tables. Subsequent times we only need the type. */ | |
681 | struct type *type; | |
a2ce51a0 DE |
682 | |
683 | /* Containing DWO unit. | |
684 | This field is valid iff per_cu.reading_dwo_directly. */ | |
685 | struct dwo_unit *dwo_unit; | |
348e048f DE |
686 | }; |
687 | ||
0186c6a7 DE |
688 | typedef struct signatured_type *sig_type_ptr; |
689 | DEF_VEC_P (sig_type_ptr); | |
690 | ||
094b34ac DE |
691 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
692 | This includes type_unit_group and quick_file_names. */ | |
693 | ||
694 | struct stmt_list_hash | |
695 | { | |
696 | /* The DWO unit this table is from or NULL if there is none. */ | |
697 | struct dwo_unit *dwo_unit; | |
698 | ||
699 | /* Offset in .debug_line or .debug_line.dwo. */ | |
700 | sect_offset line_offset; | |
701 | }; | |
702 | ||
f4dc4d17 DE |
703 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
704 | an object of this type. */ | |
705 | ||
706 | struct type_unit_group | |
707 | { | |
0186c6a7 | 708 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
709 | To simplify things we create an artificial CU that "includes" all the |
710 | type units using this stmt_list so that the rest of the code still has | |
711 | a "per_cu" handle on the symtab. | |
712 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 713 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
714 | struct dwarf2_per_cu_data per_cu; |
715 | ||
0186c6a7 DE |
716 | /* The TUs that share this DW_AT_stmt_list entry. |
717 | This is added to while parsing type units to build partial symtabs, | |
718 | and is deleted afterwards and not used again. */ | |
719 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 DE |
720 | |
721 | /* The primary symtab. | |
094b34ac DE |
722 | Type units in a group needn't all be defined in the same source file, |
723 | so we create an essentially anonymous symtab as the primary symtab. */ | |
f4dc4d17 DE |
724 | struct symtab *primary_symtab; |
725 | ||
094b34ac DE |
726 | /* The data used to construct the hash key. */ |
727 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
728 | |
729 | /* The number of symtabs from the line header. | |
730 | The value here must match line_header.num_file_names. */ | |
731 | unsigned int num_symtabs; | |
732 | ||
733 | /* The symbol tables for this TU (obtained from the files listed in | |
734 | DW_AT_stmt_list). | |
735 | WARNING: The order of entries here must match the order of entries | |
736 | in the line header. After the first TU using this type_unit_group, the | |
737 | line header for the subsequent TUs is recreated from this. This is done | |
738 | because we need to use the same symtabs for each TU using the same | |
739 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
740 | there's no guarantee the line header doesn't have duplicate entries. */ | |
741 | struct symtab **symtabs; | |
742 | }; | |
743 | ||
73869dc2 | 744 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
745 | |
746 | struct dwo_sections | |
747 | { | |
748 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
749 | struct dwarf2_section_info line; |
750 | struct dwarf2_section_info loc; | |
09262596 DE |
751 | struct dwarf2_section_info macinfo; |
752 | struct dwarf2_section_info macro; | |
3019eac3 DE |
753 | struct dwarf2_section_info str; |
754 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
755 | /* In the case of a virtual DWO file, these two are unused. */ |
756 | struct dwarf2_section_info info; | |
3019eac3 DE |
757 | VEC (dwarf2_section_info_def) *types; |
758 | }; | |
759 | ||
c88ee1f0 | 760 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
761 | |
762 | struct dwo_unit | |
763 | { | |
764 | /* Backlink to the containing struct dwo_file. */ | |
765 | struct dwo_file *dwo_file; | |
766 | ||
767 | /* The "id" that distinguishes this CU/TU. | |
768 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
769 | Since signatures came first, we stick with it for consistency. */ | |
770 | ULONGEST signature; | |
771 | ||
772 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 773 | struct dwarf2_section_info *section; |
3019eac3 | 774 | |
19ac8c2e | 775 | /* Same as dwarf2_per_cu_data:{offset,length} but in the DWO section. */ |
3019eac3 DE |
776 | sect_offset offset; |
777 | unsigned int length; | |
778 | ||
779 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
780 | cu_offset type_offset_in_tu; | |
781 | }; | |
782 | ||
73869dc2 DE |
783 | /* include/dwarf2.h defines the DWP section codes. |
784 | It defines a max value but it doesn't define a min value, which we | |
785 | use for error checking, so provide one. */ | |
786 | ||
787 | enum dwp_v2_section_ids | |
788 | { | |
789 | DW_SECT_MIN = 1 | |
790 | }; | |
791 | ||
80626a55 | 792 | /* Data for one DWO file. |
57d63ce2 DE |
793 | |
794 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
795 | appears in a DWP file). DWP files don't really have DWO files per se - | |
796 | comdat folding of types "loses" the DWO file they came from, and from | |
797 | a high level view DWP files appear to contain a mass of random types. | |
798 | However, to maintain consistency with the non-DWP case we pretend DWP | |
799 | files contain virtual DWO files, and we assign each TU with one virtual | |
800 | DWO file (generally based on the line and abbrev section offsets - | |
801 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
802 | |
803 | struct dwo_file | |
804 | { | |
0ac5b59e | 805 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
806 | For virtual DWO files the name is constructed from the section offsets |
807 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
808 | from related CU+TUs. */ | |
0ac5b59e DE |
809 | const char *dwo_name; |
810 | ||
811 | /* The DW_AT_comp_dir attribute. */ | |
812 | const char *comp_dir; | |
3019eac3 | 813 | |
80626a55 DE |
814 | /* The bfd, when the file is open. Otherwise this is NULL. |
815 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
816 | bfd *dbfd; | |
3019eac3 | 817 | |
73869dc2 DE |
818 | /* The sections that make up this DWO file. |
819 | Remember that for virtual DWO files in DWP V2, these are virtual | |
820 | sections (for lack of a better name). */ | |
3019eac3 DE |
821 | struct dwo_sections sections; |
822 | ||
19c3d4c9 DE |
823 | /* The CU in the file. |
824 | We only support one because having more than one requires hacking the | |
825 | dwo_name of each to match, which is highly unlikely to happen. | |
826 | Doing this means all TUs can share comp_dir: We also assume that | |
827 | DW_AT_comp_dir across all TUs in a DWO file will be identical. */ | |
828 | struct dwo_unit *cu; | |
3019eac3 DE |
829 | |
830 | /* Table of TUs in the file. | |
831 | Each element is a struct dwo_unit. */ | |
832 | htab_t tus; | |
833 | }; | |
834 | ||
80626a55 DE |
835 | /* These sections are what may appear in a DWP file. */ |
836 | ||
837 | struct dwp_sections | |
838 | { | |
73869dc2 | 839 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
840 | struct dwarf2_section_info str; |
841 | struct dwarf2_section_info cu_index; | |
842 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
843 | |
844 | /* These are only used by DWP version 2 files. | |
845 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
846 | sections are referenced by section number, and are not recorded here. | |
847 | In DWP version 2 there is at most one copy of all these sections, each | |
848 | section being (effectively) comprised of the concatenation of all of the | |
849 | individual sections that exist in the version 1 format. | |
850 | To keep the code simple we treat each of these concatenated pieces as a | |
851 | section itself (a virtual section?). */ | |
852 | struct dwarf2_section_info abbrev; | |
853 | struct dwarf2_section_info info; | |
854 | struct dwarf2_section_info line; | |
855 | struct dwarf2_section_info loc; | |
856 | struct dwarf2_section_info macinfo; | |
857 | struct dwarf2_section_info macro; | |
858 | struct dwarf2_section_info str_offsets; | |
859 | struct dwarf2_section_info types; | |
80626a55 DE |
860 | }; |
861 | ||
73869dc2 DE |
862 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
863 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 864 | |
73869dc2 | 865 | struct virtual_v1_dwo_sections |
80626a55 DE |
866 | { |
867 | struct dwarf2_section_info abbrev; | |
868 | struct dwarf2_section_info line; | |
869 | struct dwarf2_section_info loc; | |
870 | struct dwarf2_section_info macinfo; | |
871 | struct dwarf2_section_info macro; | |
872 | struct dwarf2_section_info str_offsets; | |
873 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 874 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
875 | struct dwarf2_section_info info_or_types; |
876 | }; | |
877 | ||
73869dc2 DE |
878 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
879 | In version 2, the sections of the DWO files are concatenated together | |
880 | and stored in one section of that name. Thus each ELF section contains | |
881 | several "virtual" sections. */ | |
882 | ||
883 | struct virtual_v2_dwo_sections | |
884 | { | |
885 | bfd_size_type abbrev_offset; | |
886 | bfd_size_type abbrev_size; | |
887 | ||
888 | bfd_size_type line_offset; | |
889 | bfd_size_type line_size; | |
890 | ||
891 | bfd_size_type loc_offset; | |
892 | bfd_size_type loc_size; | |
893 | ||
894 | bfd_size_type macinfo_offset; | |
895 | bfd_size_type macinfo_size; | |
896 | ||
897 | bfd_size_type macro_offset; | |
898 | bfd_size_type macro_size; | |
899 | ||
900 | bfd_size_type str_offsets_offset; | |
901 | bfd_size_type str_offsets_size; | |
902 | ||
903 | /* Each DWP hash table entry records one CU or one TU. | |
904 | That is recorded here, and copied to dwo_unit.section. */ | |
905 | bfd_size_type info_or_types_offset; | |
906 | bfd_size_type info_or_types_size; | |
907 | }; | |
908 | ||
80626a55 DE |
909 | /* Contents of DWP hash tables. */ |
910 | ||
911 | struct dwp_hash_table | |
912 | { | |
73869dc2 | 913 | uint32_t version, nr_columns; |
80626a55 | 914 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
915 | const gdb_byte *hash_table, *unit_table; |
916 | union | |
917 | { | |
918 | struct | |
919 | { | |
920 | const gdb_byte *indices; | |
921 | } v1; | |
922 | struct | |
923 | { | |
924 | /* This is indexed by column number and gives the id of the section | |
925 | in that column. */ | |
926 | #define MAX_NR_V2_DWO_SECTIONS \ | |
927 | (1 /* .debug_info or .debug_types */ \ | |
928 | + 1 /* .debug_abbrev */ \ | |
929 | + 1 /* .debug_line */ \ | |
930 | + 1 /* .debug_loc */ \ | |
931 | + 1 /* .debug_str_offsets */ \ | |
932 | + 1 /* .debug_macro or .debug_macinfo */) | |
933 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
934 | const gdb_byte *offsets; | |
935 | const gdb_byte *sizes; | |
936 | } v2; | |
937 | } section_pool; | |
80626a55 DE |
938 | }; |
939 | ||
940 | /* Data for one DWP file. */ | |
941 | ||
942 | struct dwp_file | |
943 | { | |
944 | /* Name of the file. */ | |
945 | const char *name; | |
946 | ||
73869dc2 DE |
947 | /* File format version. */ |
948 | int version; | |
949 | ||
93417882 | 950 | /* The bfd. */ |
80626a55 DE |
951 | bfd *dbfd; |
952 | ||
953 | /* Section info for this file. */ | |
954 | struct dwp_sections sections; | |
955 | ||
57d63ce2 | 956 | /* Table of CUs in the file. */ |
80626a55 DE |
957 | const struct dwp_hash_table *cus; |
958 | ||
959 | /* Table of TUs in the file. */ | |
960 | const struct dwp_hash_table *tus; | |
961 | ||
19ac8c2e DE |
962 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
963 | htab_t loaded_cus; | |
964 | htab_t loaded_tus; | |
80626a55 | 965 | |
73869dc2 DE |
966 | /* Table to map ELF section numbers to their sections. |
967 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
968 | unsigned int num_sections; |
969 | asection **elf_sections; | |
970 | }; | |
971 | ||
36586728 TT |
972 | /* This represents a '.dwz' file. */ |
973 | ||
974 | struct dwz_file | |
975 | { | |
976 | /* A dwz file can only contain a few sections. */ | |
977 | struct dwarf2_section_info abbrev; | |
978 | struct dwarf2_section_info info; | |
979 | struct dwarf2_section_info str; | |
980 | struct dwarf2_section_info line; | |
981 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 982 | struct dwarf2_section_info gdb_index; |
36586728 TT |
983 | |
984 | /* The dwz's BFD. */ | |
985 | bfd *dwz_bfd; | |
986 | }; | |
987 | ||
0963b4bd MS |
988 | /* Struct used to pass misc. parameters to read_die_and_children, et |
989 | al. which are used for both .debug_info and .debug_types dies. | |
990 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 991 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
992 | |
993 | struct die_reader_specs | |
994 | { | |
a32a8923 | 995 | /* The bfd of die_section. */ |
93311388 DE |
996 | bfd* abfd; |
997 | ||
998 | /* The CU of the DIE we are parsing. */ | |
999 | struct dwarf2_cu *cu; | |
1000 | ||
80626a55 | 1001 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1002 | struct dwo_file *dwo_file; |
1003 | ||
dee91e82 | 1004 | /* The section the die comes from. |
3019eac3 | 1005 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1006 | struct dwarf2_section_info *die_section; |
1007 | ||
1008 | /* die_section->buffer. */ | |
d521ce57 | 1009 | const gdb_byte *buffer; |
f664829e DE |
1010 | |
1011 | /* The end of the buffer. */ | |
1012 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1013 | |
1014 | /* The value of the DW_AT_comp_dir attribute. */ | |
1015 | const char *comp_dir; | |
93311388 DE |
1016 | }; |
1017 | ||
fd820528 | 1018 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1019 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1020 | const gdb_byte *info_ptr, |
dee91e82 DE |
1021 | struct die_info *comp_unit_die, |
1022 | int has_children, | |
1023 | void *data); | |
1024 | ||
debd256d JB |
1025 | /* The line number information for a compilation unit (found in the |
1026 | .debug_line section) begins with a "statement program header", | |
1027 | which contains the following information. */ | |
1028 | struct line_header | |
1029 | { | |
1030 | unsigned int total_length; | |
1031 | unsigned short version; | |
1032 | unsigned int header_length; | |
1033 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 1034 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
1035 | unsigned char default_is_stmt; |
1036 | int line_base; | |
1037 | unsigned char line_range; | |
1038 | unsigned char opcode_base; | |
1039 | ||
1040 | /* standard_opcode_lengths[i] is the number of operands for the | |
1041 | standard opcode whose value is i. This means that | |
1042 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1043 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
1044 | unsigned char *standard_opcode_lengths; | |
1045 | ||
1046 | /* The include_directories table. NOTE! These strings are not | |
1047 | allocated with xmalloc; instead, they are pointers into | |
1048 | debug_line_buffer. If you try to free them, `free' will get | |
1049 | indigestion. */ | |
1050 | unsigned int num_include_dirs, include_dirs_size; | |
d521ce57 | 1051 | const char **include_dirs; |
debd256d JB |
1052 | |
1053 | /* The file_names table. NOTE! These strings are not allocated | |
1054 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
1055 | Don't try to free them directly. */ | |
1056 | unsigned int num_file_names, file_names_size; | |
1057 | struct file_entry | |
c906108c | 1058 | { |
d521ce57 | 1059 | const char *name; |
debd256d JB |
1060 | unsigned int dir_index; |
1061 | unsigned int mod_time; | |
1062 | unsigned int length; | |
aaa75496 | 1063 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 1064 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
1065 | } *file_names; |
1066 | ||
1067 | /* The start and end of the statement program following this | |
6502dd73 | 1068 | header. These point into dwarf2_per_objfile->line_buffer. */ |
d521ce57 | 1069 | const gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 1070 | }; |
c906108c SS |
1071 | |
1072 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 1073 | need this much information. */ |
c906108c SS |
1074 | struct partial_die_info |
1075 | { | |
72bf9492 | 1076 | /* Offset of this DIE. */ |
b64f50a1 | 1077 | sect_offset offset; |
72bf9492 DJ |
1078 | |
1079 | /* DWARF-2 tag for this DIE. */ | |
1080 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1081 | ||
72bf9492 DJ |
1082 | /* Assorted flags describing the data found in this DIE. */ |
1083 | unsigned int has_children : 1; | |
1084 | unsigned int is_external : 1; | |
1085 | unsigned int is_declaration : 1; | |
1086 | unsigned int has_type : 1; | |
1087 | unsigned int has_specification : 1; | |
1088 | unsigned int has_pc_info : 1; | |
481860b3 | 1089 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
1090 | |
1091 | /* Flag set if the SCOPE field of this structure has been | |
1092 | computed. */ | |
1093 | unsigned int scope_set : 1; | |
1094 | ||
fa4028e9 JB |
1095 | /* Flag set if the DIE has a byte_size attribute. */ |
1096 | unsigned int has_byte_size : 1; | |
1097 | ||
98bfdba5 PA |
1098 | /* Flag set if any of the DIE's children are template arguments. */ |
1099 | unsigned int has_template_arguments : 1; | |
1100 | ||
abc72ce4 DE |
1101 | /* Flag set if fixup_partial_die has been called on this die. */ |
1102 | unsigned int fixup_called : 1; | |
1103 | ||
36586728 TT |
1104 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1105 | unsigned int is_dwz : 1; | |
1106 | ||
1107 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1108 | unsigned int spec_is_dwz : 1; | |
1109 | ||
72bf9492 | 1110 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1111 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1112 | const char *name; |
72bf9492 | 1113 | |
abc72ce4 DE |
1114 | /* The linkage name, if present. */ |
1115 | const char *linkage_name; | |
1116 | ||
72bf9492 DJ |
1117 | /* The scope to prepend to our children. This is generally |
1118 | allocated on the comp_unit_obstack, so will disappear | |
1119 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1120 | const char *scope; |
72bf9492 | 1121 | |
95554aad TT |
1122 | /* Some data associated with the partial DIE. The tag determines |
1123 | which field is live. */ | |
1124 | union | |
1125 | { | |
1126 | /* The location description associated with this DIE, if any. */ | |
1127 | struct dwarf_block *locdesc; | |
1128 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
1129 | sect_offset offset; | |
1130 | } d; | |
72bf9492 DJ |
1131 | |
1132 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1133 | CORE_ADDR lowpc; |
1134 | CORE_ADDR highpc; | |
72bf9492 | 1135 | |
93311388 | 1136 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1137 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1138 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1139 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1140 | const gdb_byte *sibling; |
72bf9492 DJ |
1141 | |
1142 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1143 | DW_AT_specification (or DW_AT_abstract_origin or | |
1144 | DW_AT_extension). */ | |
b64f50a1 | 1145 | sect_offset spec_offset; |
72bf9492 DJ |
1146 | |
1147 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1148 | if any. */ | |
1149 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1150 | }; |
1151 | ||
0963b4bd | 1152 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1153 | struct abbrev_info |
1154 | { | |
1155 | unsigned int number; /* number identifying abbrev */ | |
1156 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1157 | unsigned short has_children; /* boolean */ |
1158 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1159 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1160 | struct abbrev_info *next; /* next in chain */ | |
1161 | }; | |
1162 | ||
1163 | struct attr_abbrev | |
1164 | { | |
9d25dd43 DE |
1165 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1166 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
1167 | }; |
1168 | ||
433df2d4 DE |
1169 | /* Size of abbrev_table.abbrev_hash_table. */ |
1170 | #define ABBREV_HASH_SIZE 121 | |
1171 | ||
1172 | /* Top level data structure to contain an abbreviation table. */ | |
1173 | ||
1174 | struct abbrev_table | |
1175 | { | |
f4dc4d17 DE |
1176 | /* Where the abbrev table came from. |
1177 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1178 | sect_offset offset; |
1179 | ||
1180 | /* Storage for the abbrev table. */ | |
1181 | struct obstack abbrev_obstack; | |
1182 | ||
1183 | /* Hash table of abbrevs. | |
1184 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1185 | It could be statically allocated, but the previous code didn't so we | |
1186 | don't either. */ | |
1187 | struct abbrev_info **abbrevs; | |
1188 | }; | |
1189 | ||
0963b4bd | 1190 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1191 | struct attribute |
1192 | { | |
9d25dd43 | 1193 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1194 | ENUM_BITFIELD(dwarf_form) form : 15; |
1195 | ||
1196 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1197 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1198 | here for better struct attribute alignment. */ | |
1199 | unsigned int string_is_canonical : 1; | |
1200 | ||
b60c80d6 DJ |
1201 | union |
1202 | { | |
15d034d0 | 1203 | const char *str; |
b60c80d6 | 1204 | struct dwarf_block *blk; |
43bbcdc2 PH |
1205 | ULONGEST unsnd; |
1206 | LONGEST snd; | |
b60c80d6 | 1207 | CORE_ADDR addr; |
ac9ec31b | 1208 | ULONGEST signature; |
b60c80d6 DJ |
1209 | } |
1210 | u; | |
1211 | }; | |
1212 | ||
0963b4bd | 1213 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1214 | struct die_info |
1215 | { | |
76815b17 DE |
1216 | /* DWARF-2 tag for this DIE. */ |
1217 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1218 | ||
1219 | /* Number of attributes */ | |
98bfdba5 PA |
1220 | unsigned char num_attrs; |
1221 | ||
1222 | /* True if we're presently building the full type name for the | |
1223 | type derived from this DIE. */ | |
1224 | unsigned char building_fullname : 1; | |
76815b17 DE |
1225 | |
1226 | /* Abbrev number */ | |
1227 | unsigned int abbrev; | |
1228 | ||
93311388 | 1229 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1230 | sect_offset offset; |
78ba4af6 JB |
1231 | |
1232 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1233 | points to this die's parent; CHILD points to the first child of | |
1234 | this node; and all the children of a given node are chained | |
4950bc1c | 1235 | together via their SIBLING fields. */ |
639d11d3 DC |
1236 | struct die_info *child; /* Its first child, if any. */ |
1237 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1238 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1239 | |
b60c80d6 DJ |
1240 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1241 | zero, but it's not common and zero-sized arrays are not | |
1242 | sufficiently portable C. */ | |
1243 | struct attribute attrs[1]; | |
c906108c SS |
1244 | }; |
1245 | ||
0963b4bd | 1246 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1247 | |
1248 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1249 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1250 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1251 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1252 | #define DW_SND(attr) ((attr)->u.snd) | |
1253 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1254 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1255 | |
0963b4bd | 1256 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1257 | struct dwarf_block |
1258 | { | |
56eb65bd | 1259 | size_t size; |
1d6edc3c JK |
1260 | |
1261 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1262 | const gdb_byte *data; |
c906108c SS |
1263 | }; |
1264 | ||
c906108c SS |
1265 | #ifndef ATTR_ALLOC_CHUNK |
1266 | #define ATTR_ALLOC_CHUNK 4 | |
1267 | #endif | |
1268 | ||
c906108c SS |
1269 | /* Allocate fields for structs, unions and enums in this size. */ |
1270 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1271 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1272 | #endif | |
1273 | ||
c906108c SS |
1274 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1275 | but this would require a corresponding change in unpack_field_as_long | |
1276 | and friends. */ | |
1277 | static int bits_per_byte = 8; | |
1278 | ||
1279 | /* The routines that read and process dies for a C struct or C++ class | |
1280 | pass lists of data member fields and lists of member function fields | |
1281 | in an instance of a field_info structure, as defined below. */ | |
1282 | struct field_info | |
c5aa993b | 1283 | { |
0963b4bd | 1284 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
1285 | struct nextfield |
1286 | { | |
1287 | struct nextfield *next; | |
1288 | int accessibility; | |
1289 | int virtuality; | |
1290 | struct field field; | |
1291 | } | |
7d0ccb61 | 1292 | *fields, *baseclasses; |
c906108c | 1293 | |
7d0ccb61 | 1294 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1295 | int nfields; |
c906108c | 1296 | |
c5aa993b JM |
1297 | /* Number of baseclasses. */ |
1298 | int nbaseclasses; | |
c906108c | 1299 | |
c5aa993b JM |
1300 | /* Set if the accesibility of one of the fields is not public. */ |
1301 | int non_public_fields; | |
c906108c | 1302 | |
c5aa993b JM |
1303 | /* Member function fields array, entries are allocated in the order they |
1304 | are encountered in the object file. */ | |
1305 | struct nextfnfield | |
1306 | { | |
1307 | struct nextfnfield *next; | |
1308 | struct fn_field fnfield; | |
1309 | } | |
1310 | *fnfields; | |
c906108c | 1311 | |
c5aa993b JM |
1312 | /* Member function fieldlist array, contains name of possibly overloaded |
1313 | member function, number of overloaded member functions and a pointer | |
1314 | to the head of the member function field chain. */ | |
1315 | struct fnfieldlist | |
1316 | { | |
15d034d0 | 1317 | const char *name; |
c5aa993b JM |
1318 | int length; |
1319 | struct nextfnfield *head; | |
1320 | } | |
1321 | *fnfieldlists; | |
c906108c | 1322 | |
c5aa993b JM |
1323 | /* Number of entries in the fnfieldlists array. */ |
1324 | int nfnfields; | |
98751a41 JK |
1325 | |
1326 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1327 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1328 | struct typedef_field_list | |
1329 | { | |
1330 | struct typedef_field field; | |
1331 | struct typedef_field_list *next; | |
1332 | } | |
1333 | *typedef_field_list; | |
1334 | unsigned typedef_field_list_count; | |
c5aa993b | 1335 | }; |
c906108c | 1336 | |
10b3939b DJ |
1337 | /* One item on the queue of compilation units to read in full symbols |
1338 | for. */ | |
1339 | struct dwarf2_queue_item | |
1340 | { | |
1341 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1342 | enum language pretend_language; |
10b3939b DJ |
1343 | struct dwarf2_queue_item *next; |
1344 | }; | |
1345 | ||
1346 | /* The current queue. */ | |
1347 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1348 | ||
ae038cb0 DJ |
1349 | /* Loaded secondary compilation units are kept in memory until they |
1350 | have not been referenced for the processing of this many | |
1351 | compilation units. Set this to zero to disable caching. Cache | |
1352 | sizes of up to at least twenty will improve startup time for | |
1353 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
1354 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
1355 | static void |
1356 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
1357 | struct cmd_list_element *c, const char *value) | |
1358 | { | |
3e43a32a MS |
1359 | fprintf_filtered (file, _("The upper bound on the age of cached " |
1360 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
1361 | value); |
1362 | } | |
4390d890 | 1363 | \f |
c906108c SS |
1364 | /* local function prototypes */ |
1365 | ||
a32a8923 DE |
1366 | static const char *get_section_name (const struct dwarf2_section_info *); |
1367 | ||
1368 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1369 | ||
4efb68b1 | 1370 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1371 | |
918dd910 JK |
1372 | static void dwarf2_find_base_address (struct die_info *die, |
1373 | struct dwarf2_cu *cu); | |
1374 | ||
0018ea6f DE |
1375 | static struct partial_symtab *create_partial_symtab |
1376 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1377 | ||
c67a9c90 | 1378 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1379 | |
72bf9492 DJ |
1380 | static void scan_partial_symbols (struct partial_die_info *, |
1381 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1382 | int, struct dwarf2_cu *); |
c906108c | 1383 | |
72bf9492 DJ |
1384 | static void add_partial_symbol (struct partial_die_info *, |
1385 | struct dwarf2_cu *); | |
63d06c5c | 1386 | |
72bf9492 DJ |
1387 | static void add_partial_namespace (struct partial_die_info *pdi, |
1388 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1389 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1390 | |
5d7cb8df JK |
1391 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1392 | CORE_ADDR *highpc, int need_pc, | |
1393 | struct dwarf2_cu *cu); | |
1394 | ||
72bf9492 DJ |
1395 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1396 | struct dwarf2_cu *cu); | |
91c24f0a | 1397 | |
bc30ff58 JB |
1398 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1399 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1400 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1401 | |
257e7a09 YQ |
1402 | static void dwarf2_read_symtab (struct partial_symtab *, |
1403 | struct objfile *); | |
c906108c | 1404 | |
a14ed312 | 1405 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1406 | |
433df2d4 DE |
1407 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1408 | (const struct abbrev_table *, unsigned int); | |
1409 | ||
1410 | static struct abbrev_table *abbrev_table_read_table | |
1411 | (struct dwarf2_section_info *, sect_offset); | |
1412 | ||
1413 | static void abbrev_table_free (struct abbrev_table *); | |
1414 | ||
f4dc4d17 DE |
1415 | static void abbrev_table_free_cleanup (void *); |
1416 | ||
dee91e82 DE |
1417 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1418 | struct dwarf2_section_info *); | |
c906108c | 1419 | |
f3dd6933 | 1420 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1421 | |
d521ce57 | 1422 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1423 | |
dee91e82 | 1424 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1425 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1426 | |
d521ce57 TT |
1427 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1428 | struct partial_die_info *, | |
1429 | struct abbrev_info *, | |
1430 | unsigned int, | |
1431 | const gdb_byte *); | |
c906108c | 1432 | |
36586728 | 1433 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1434 | struct dwarf2_cu *); |
72bf9492 DJ |
1435 | |
1436 | static void fixup_partial_die (struct partial_die_info *, | |
1437 | struct dwarf2_cu *); | |
1438 | ||
d521ce57 TT |
1439 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1440 | struct attribute *, struct attr_abbrev *, | |
1441 | const gdb_byte *); | |
a8329558 | 1442 | |
a1855c1d | 1443 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1444 | |
a1855c1d | 1445 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1446 | |
a1855c1d | 1447 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1448 | |
a1855c1d | 1449 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1450 | |
a1855c1d | 1451 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1452 | |
d521ce57 | 1453 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1454 | unsigned int *); |
c906108c | 1455 | |
d521ce57 | 1456 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1457 | |
1458 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1459 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1460 | unsigned int *, unsigned int *); |
613e1657 | 1461 | |
d521ce57 TT |
1462 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1463 | const struct comp_unit_head *, | |
c764a876 DE |
1464 | unsigned int *); |
1465 | ||
d521ce57 | 1466 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1467 | |
f4dc4d17 DE |
1468 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1469 | sect_offset); | |
1470 | ||
d521ce57 | 1471 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1472 | |
d521ce57 | 1473 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1474 | |
d521ce57 TT |
1475 | static const char *read_indirect_string (bfd *, const gdb_byte *, |
1476 | const struct comp_unit_head *, | |
1477 | unsigned int *); | |
4bdf3d34 | 1478 | |
d521ce57 | 1479 | static const char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
36586728 | 1480 | |
d521ce57 | 1481 | static ULONGEST read_unsigned_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1482 | |
d521ce57 | 1483 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1484 | |
d521ce57 TT |
1485 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1486 | const gdb_byte *, | |
3019eac3 DE |
1487 | unsigned int *); |
1488 | ||
d521ce57 TT |
1489 | static const char *read_str_index (const struct die_reader_specs *reader, |
1490 | struct dwarf2_cu *cu, ULONGEST str_index); | |
3019eac3 | 1491 | |
e142c38c | 1492 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1493 | |
e142c38c DJ |
1494 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1495 | struct dwarf2_cu *); | |
c906108c | 1496 | |
348e048f | 1497 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1498 | unsigned int); |
348e048f | 1499 | |
05cf31d1 JB |
1500 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1501 | struct dwarf2_cu *cu); | |
1502 | ||
e142c38c | 1503 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1504 | |
e142c38c | 1505 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1506 | struct dwarf2_cu **); |
63d06c5c | 1507 | |
debd256d JB |
1508 | static void free_line_header (struct line_header *lh); |
1509 | ||
3019eac3 DE |
1510 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1511 | struct dwarf2_cu *cu); | |
debd256d | 1512 | |
f3f5162e DE |
1513 | static void dwarf_decode_lines (struct line_header *, const char *, |
1514 | struct dwarf2_cu *, struct partial_symtab *, | |
1515 | int); | |
c906108c | 1516 | |
d521ce57 | 1517 | static void dwarf2_start_subfile (const char *, const char *, const char *); |
c906108c | 1518 | |
f4dc4d17 | 1519 | static void dwarf2_start_symtab (struct dwarf2_cu *, |
15d034d0 | 1520 | const char *, const char *, CORE_ADDR); |
f4dc4d17 | 1521 | |
a14ed312 | 1522 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1523 | struct dwarf2_cu *); |
c906108c | 1524 | |
34eaf542 TT |
1525 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1526 | struct dwarf2_cu *, struct symbol *); | |
1527 | ||
ff39bb5e | 1528 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1529 | struct dwarf2_cu *); |
c906108c | 1530 | |
ff39bb5e | 1531 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1532 | struct type *type, |
1533 | const char *name, | |
1534 | struct obstack *obstack, | |
12df843f | 1535 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1536 | const gdb_byte **bytes, |
98bfdba5 | 1537 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1538 | |
e7c27a73 | 1539 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1540 | |
b4ba55a1 JB |
1541 | static int need_gnat_info (struct dwarf2_cu *); |
1542 | ||
3e43a32a MS |
1543 | static struct type *die_descriptive_type (struct die_info *, |
1544 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1545 | |
1546 | static void set_descriptive_type (struct type *, struct die_info *, | |
1547 | struct dwarf2_cu *); | |
1548 | ||
e7c27a73 DJ |
1549 | static struct type *die_containing_type (struct die_info *, |
1550 | struct dwarf2_cu *); | |
c906108c | 1551 | |
ff39bb5e | 1552 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1553 | struct dwarf2_cu *); |
c906108c | 1554 | |
f792889a | 1555 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1556 | |
673bfd45 DE |
1557 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1558 | ||
0d5cff50 | 1559 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1560 | |
6e70227d | 1561 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1562 | const char *suffix, int physname, |
1563 | struct dwarf2_cu *cu); | |
63d06c5c | 1564 | |
e7c27a73 | 1565 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1566 | |
348e048f DE |
1567 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1568 | ||
e7c27a73 | 1569 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1570 | |
e7c27a73 | 1571 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1572 | |
96408a79 SA |
1573 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1574 | ||
ff013f42 JK |
1575 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1576 | struct dwarf2_cu *, struct partial_symtab *); | |
1577 | ||
a14ed312 | 1578 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1579 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1580 | struct partial_symtab *); | |
c906108c | 1581 | |
fae299cd DC |
1582 | static void get_scope_pc_bounds (struct die_info *, |
1583 | CORE_ADDR *, CORE_ADDR *, | |
1584 | struct dwarf2_cu *); | |
1585 | ||
801e3a5b JB |
1586 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1587 | CORE_ADDR, struct dwarf2_cu *); | |
1588 | ||
a14ed312 | 1589 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1590 | struct dwarf2_cu *); |
c906108c | 1591 | |
a14ed312 | 1592 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1593 | struct type *, struct dwarf2_cu *); |
c906108c | 1594 | |
a14ed312 | 1595 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1596 | struct die_info *, struct type *, |
e7c27a73 | 1597 | struct dwarf2_cu *); |
c906108c | 1598 | |
a14ed312 | 1599 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1600 | struct type *, |
1601 | struct dwarf2_cu *); | |
c906108c | 1602 | |
134d01f1 | 1603 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1604 | |
e7c27a73 | 1605 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1606 | |
e7c27a73 | 1607 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1608 | |
5d7cb8df JK |
1609 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1610 | ||
27aa8d6a SW |
1611 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1612 | ||
f55ee35c JK |
1613 | static struct type *read_module_type (struct die_info *die, |
1614 | struct dwarf2_cu *cu); | |
1615 | ||
38d518c9 | 1616 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1617 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1618 | |
134d01f1 | 1619 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1620 | |
e7c27a73 | 1621 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1622 | |
6e70227d | 1623 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1624 | struct dwarf2_cu *); |
1625 | ||
bf6af496 | 1626 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1627 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1628 | struct die_info *); |
639d11d3 | 1629 | |
dee91e82 | 1630 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1631 | const gdb_byte *info_ptr, |
1632 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1633 | struct die_info *parent); |
1634 | ||
d521ce57 TT |
1635 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1636 | struct die_info **, const gdb_byte *, | |
1637 | int *, int); | |
3019eac3 | 1638 | |
d521ce57 TT |
1639 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1640 | struct die_info **, const gdb_byte *, | |
1641 | int *); | |
93311388 | 1642 | |
e7c27a73 | 1643 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1644 | |
15d034d0 TT |
1645 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1646 | struct obstack *); | |
71c25dea | 1647 | |
15d034d0 | 1648 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1649 | |
15d034d0 | 1650 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1651 | struct die_info *die, |
1652 | struct dwarf2_cu *cu); | |
1653 | ||
ca69b9e6 DE |
1654 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1655 | struct dwarf2_cu *cu); | |
1656 | ||
e142c38c | 1657 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1658 | struct dwarf2_cu **); |
9219021c | 1659 | |
f39c6ffd | 1660 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1661 | |
f39c6ffd | 1662 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1663 | |
f39c6ffd | 1664 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1665 | |
a14ed312 | 1666 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1667 | |
f39c6ffd | 1668 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1669 | |
f9aca02d | 1670 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1671 | |
d97bc12b DE |
1672 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1673 | ||
1674 | static void dump_die_for_error (struct die_info *); | |
1675 | ||
1676 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1677 | struct die_info *); | |
c906108c | 1678 | |
d97bc12b | 1679 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1680 | |
51545339 | 1681 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1682 | struct dwarf2_cu *); |
c906108c | 1683 | |
ff39bb5e | 1684 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1685 | |
ff39bb5e | 1686 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1687 | |
348e048f | 1688 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1689 | const struct attribute *, |
348e048f DE |
1690 | struct dwarf2_cu **); |
1691 | ||
10b3939b | 1692 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1693 | const struct attribute *, |
f2f0e013 | 1694 | struct dwarf2_cu **); |
c906108c | 1695 | |
348e048f | 1696 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1697 | const struct attribute *, |
348e048f DE |
1698 | struct dwarf2_cu **); |
1699 | ||
ac9ec31b DE |
1700 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1701 | struct dwarf2_cu *); | |
1702 | ||
1703 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1704 | const struct attribute *, |
ac9ec31b DE |
1705 | struct dwarf2_cu *); |
1706 | ||
e5fe5e75 | 1707 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1708 | |
52dc124a | 1709 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1710 | |
f4dc4d17 | 1711 | static struct type_unit_group *get_type_unit_group |
ff39bb5e | 1712 | (struct dwarf2_cu *, const struct attribute *); |
f4dc4d17 DE |
1713 | |
1714 | static void build_type_unit_groups (die_reader_func_ftype *, void *); | |
1715 | ||
c906108c SS |
1716 | /* memory allocation interface */ |
1717 | ||
7b5a2f43 | 1718 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1719 | |
b60c80d6 | 1720 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1721 | |
09262596 | 1722 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, |
15d034d0 | 1723 | const char *, int); |
2e276125 | 1724 | |
6e5a29e1 | 1725 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1726 | |
6e5a29e1 | 1727 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1728 | |
6e5a29e1 | 1729 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1730 | |
6e5a29e1 | 1731 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1732 | |
8cf6f0b1 TT |
1733 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1734 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1735 | const struct attribute *attr); |
8cf6f0b1 | 1736 | |
ff39bb5e | 1737 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1738 | struct symbol *sym, |
f1e6e072 TT |
1739 | struct dwarf2_cu *cu, |
1740 | int is_block); | |
4c2df51b | 1741 | |
d521ce57 TT |
1742 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1743 | const gdb_byte *info_ptr, | |
1744 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1745 | |
72bf9492 DJ |
1746 | static void free_stack_comp_unit (void *); |
1747 | ||
72bf9492 DJ |
1748 | static hashval_t partial_die_hash (const void *item); |
1749 | ||
1750 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1751 | ||
ae038cb0 | 1752 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1753 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1754 | |
9816fde3 | 1755 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1756 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1757 | |
1758 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1759 | struct die_info *comp_unit_die, |
1760 | enum language pretend_language); | |
93311388 | 1761 | |
68dc6402 | 1762 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1763 | |
1764 | static void free_cached_comp_units (void *); | |
1765 | ||
1766 | static void age_cached_comp_units (void); | |
1767 | ||
dee91e82 | 1768 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1769 | |
f792889a DJ |
1770 | static struct type *set_die_type (struct die_info *, struct type *, |
1771 | struct dwarf2_cu *); | |
1c379e20 | 1772 | |
ae038cb0 DJ |
1773 | static void create_all_comp_units (struct objfile *); |
1774 | ||
0e50663e | 1775 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1776 | |
95554aad TT |
1777 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1778 | enum language); | |
10b3939b | 1779 | |
95554aad TT |
1780 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1781 | enum language); | |
10b3939b | 1782 | |
f4dc4d17 DE |
1783 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1784 | enum language); | |
1785 | ||
10b3939b DJ |
1786 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1787 | struct dwarf2_per_cu_data *); | |
1788 | ||
ae038cb0 DJ |
1789 | static void dwarf2_mark (struct dwarf2_cu *); |
1790 | ||
1791 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1792 | ||
b64f50a1 | 1793 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1794 | struct dwarf2_per_cu_data *); |
673bfd45 | 1795 | |
f792889a | 1796 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1797 | |
9291a0cd TT |
1798 | static void dwarf2_release_queue (void *dummy); |
1799 | ||
95554aad TT |
1800 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1801 | enum language pretend_language); | |
1802 | ||
a0f42c21 | 1803 | static void process_queue (void); |
9291a0cd TT |
1804 | |
1805 | static void find_file_and_directory (struct die_info *die, | |
1806 | struct dwarf2_cu *cu, | |
15d034d0 | 1807 | const char **name, const char **comp_dir); |
9291a0cd TT |
1808 | |
1809 | static char *file_full_name (int file, struct line_header *lh, | |
1810 | const char *comp_dir); | |
1811 | ||
d521ce57 | 1812 | static const gdb_byte *read_and_check_comp_unit_head |
36586728 TT |
1813 | (struct comp_unit_head *header, |
1814 | struct dwarf2_section_info *section, | |
d521ce57 | 1815 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
36586728 TT |
1816 | int is_debug_types_section); |
1817 | ||
fd820528 | 1818 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1819 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1820 | int use_existing_cu, int keep, | |
3019eac3 DE |
1821 | die_reader_func_ftype *die_reader_func, void *data); |
1822 | ||
dee91e82 DE |
1823 | static void init_cutu_and_read_dies_simple |
1824 | (struct dwarf2_per_cu_data *this_cu, | |
1825 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1826 | |
673bfd45 | 1827 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1828 | |
3019eac3 DE |
1829 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1830 | ||
57d63ce2 DE |
1831 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
1832 | (struct dwp_file *dwp_file, const char *comp_dir, | |
1833 | ULONGEST signature, int is_debug_types); | |
a2ce51a0 DE |
1834 | |
1835 | static struct dwp_file *get_dwp_file (void); | |
1836 | ||
3019eac3 | 1837 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1838 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1839 | |
1840 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1841 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1842 | |
89e63ee4 DE |
1843 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1844 | ||
3019eac3 DE |
1845 | static void free_dwo_file_cleanup (void *); |
1846 | ||
95554aad TT |
1847 | static void process_cu_includes (void); |
1848 | ||
1b80a9fa | 1849 | static void check_producer (struct dwarf2_cu *cu); |
4390d890 DE |
1850 | \f |
1851 | /* Various complaints about symbol reading that don't abort the process. */ | |
1852 | ||
1853 | static void | |
1854 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1855 | { | |
1856 | complaint (&symfile_complaints, | |
1857 | _("statement list doesn't fit in .debug_line section")); | |
1858 | } | |
1859 | ||
1860 | static void | |
1861 | dwarf2_debug_line_missing_file_complaint (void) | |
1862 | { | |
1863 | complaint (&symfile_complaints, | |
1864 | _(".debug_line section has line data without a file")); | |
1865 | } | |
1866 | ||
1867 | static void | |
1868 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1869 | { | |
1870 | complaint (&symfile_complaints, | |
1871 | _(".debug_line section has line " | |
1872 | "program sequence without an end")); | |
1873 | } | |
1874 | ||
1875 | static void | |
1876 | dwarf2_complex_location_expr_complaint (void) | |
1877 | { | |
1878 | complaint (&symfile_complaints, _("location expression too complex")); | |
1879 | } | |
1880 | ||
1881 | static void | |
1882 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1883 | int arg3) | |
1884 | { | |
1885 | complaint (&symfile_complaints, | |
1886 | _("const value length mismatch for '%s', got %d, expected %d"), | |
1887 | arg1, arg2, arg3); | |
1888 | } | |
1889 | ||
1890 | static void | |
1891 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1892 | { | |
1893 | complaint (&symfile_complaints, | |
1894 | _("debug info runs off end of %s section" | |
1895 | " [in module %s]"), | |
a32a8923 DE |
1896 | get_section_name (section), |
1897 | get_section_file_name (section)); | |
4390d890 | 1898 | } |
1b80a9fa | 1899 | |
4390d890 DE |
1900 | static void |
1901 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1902 | { | |
1903 | complaint (&symfile_complaints, | |
1904 | _("macro debug info contains a " | |
1905 | "malformed macro definition:\n`%s'"), | |
1906 | arg1); | |
1907 | } | |
1908 | ||
1909 | static void | |
1910 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1911 | { | |
1912 | complaint (&symfile_complaints, | |
1913 | _("invalid attribute class or form for '%s' in '%s'"), | |
1914 | arg1, arg2); | |
1915 | } | |
1916 | \f | |
9291a0cd TT |
1917 | #if WORDS_BIGENDIAN |
1918 | ||
1919 | /* Convert VALUE between big- and little-endian. */ | |
1920 | static offset_type | |
1921 | byte_swap (offset_type value) | |
1922 | { | |
1923 | offset_type result; | |
1924 | ||
1925 | result = (value & 0xff) << 24; | |
1926 | result |= (value & 0xff00) << 8; | |
1927 | result |= (value & 0xff0000) >> 8; | |
1928 | result |= (value & 0xff000000) >> 24; | |
1929 | return result; | |
1930 | } | |
1931 | ||
1932 | #define MAYBE_SWAP(V) byte_swap (V) | |
1933 | ||
1934 | #else | |
1935 | #define MAYBE_SWAP(V) (V) | |
1936 | #endif /* WORDS_BIGENDIAN */ | |
1937 | ||
1938 | /* The suffix for an index file. */ | |
1939 | #define INDEX_SUFFIX ".gdb-index" | |
1940 | ||
c906108c | 1941 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1942 | information and return true if we have enough to do something. |
1943 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1944 | ELF names are used. */ | |
c906108c SS |
1945 | |
1946 | int | |
251d32d9 TG |
1947 | dwarf2_has_info (struct objfile *objfile, |
1948 | const struct dwarf2_debug_sections *names) | |
c906108c | 1949 | { |
be391dca TT |
1950 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1951 | if (!dwarf2_per_objfile) | |
1952 | { | |
1953 | /* Initialize per-objfile state. */ | |
1954 | struct dwarf2_per_objfile *data | |
1955 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1956 | |
be391dca TT |
1957 | memset (data, 0, sizeof (*data)); |
1958 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1959 | dwarf2_per_objfile = data; | |
6502dd73 | 1960 | |
251d32d9 TG |
1961 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1962 | (void *) names); | |
be391dca TT |
1963 | dwarf2_per_objfile->objfile = objfile; |
1964 | } | |
73869dc2 DE |
1965 | return (!dwarf2_per_objfile->info.is_virtual |
1966 | && dwarf2_per_objfile->info.s.asection != NULL | |
1967 | && !dwarf2_per_objfile->abbrev.is_virtual | |
1968 | && dwarf2_per_objfile->abbrev.s.asection != NULL); | |
1969 | } | |
1970 | ||
1971 | /* Return the containing section of virtual section SECTION. */ | |
1972 | ||
1973 | static struct dwarf2_section_info * | |
1974 | get_containing_section (const struct dwarf2_section_info *section) | |
1975 | { | |
1976 | gdb_assert (section->is_virtual); | |
1977 | return section->s.containing_section; | |
c906108c SS |
1978 | } |
1979 | ||
a32a8923 DE |
1980 | /* Return the bfd owner of SECTION. */ |
1981 | ||
1982 | static struct bfd * | |
1983 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
1984 | { | |
73869dc2 DE |
1985 | if (section->is_virtual) |
1986 | { | |
1987 | section = get_containing_section (section); | |
1988 | gdb_assert (!section->is_virtual); | |
1989 | } | |
1990 | return section->s.asection->owner; | |
a32a8923 DE |
1991 | } |
1992 | ||
1993 | /* Return the bfd section of SECTION. | |
1994 | Returns NULL if the section is not present. */ | |
1995 | ||
1996 | static asection * | |
1997 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
1998 | { | |
73869dc2 DE |
1999 | if (section->is_virtual) |
2000 | { | |
2001 | section = get_containing_section (section); | |
2002 | gdb_assert (!section->is_virtual); | |
2003 | } | |
2004 | return section->s.asection; | |
a32a8923 DE |
2005 | } |
2006 | ||
2007 | /* Return the name of SECTION. */ | |
2008 | ||
2009 | static const char * | |
2010 | get_section_name (const struct dwarf2_section_info *section) | |
2011 | { | |
2012 | asection *sectp = get_section_bfd_section (section); | |
2013 | ||
2014 | gdb_assert (sectp != NULL); | |
2015 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2016 | } | |
2017 | ||
2018 | /* Return the name of the file SECTION is in. */ | |
2019 | ||
2020 | static const char * | |
2021 | get_section_file_name (const struct dwarf2_section_info *section) | |
2022 | { | |
2023 | bfd *abfd = get_section_bfd_owner (section); | |
2024 | ||
2025 | return bfd_get_filename (abfd); | |
2026 | } | |
2027 | ||
2028 | /* Return the id of SECTION. | |
2029 | Returns 0 if SECTION doesn't exist. */ | |
2030 | ||
2031 | static int | |
2032 | get_section_id (const struct dwarf2_section_info *section) | |
2033 | { | |
2034 | asection *sectp = get_section_bfd_section (section); | |
2035 | ||
2036 | if (sectp == NULL) | |
2037 | return 0; | |
2038 | return sectp->id; | |
2039 | } | |
2040 | ||
2041 | /* Return the flags of SECTION. | |
73869dc2 | 2042 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2043 | |
2044 | static int | |
2045 | get_section_flags (const struct dwarf2_section_info *section) | |
2046 | { | |
2047 | asection *sectp = get_section_bfd_section (section); | |
2048 | ||
2049 | gdb_assert (sectp != NULL); | |
2050 | return bfd_get_section_flags (sectp->owner, sectp); | |
2051 | } | |
2052 | ||
251d32d9 TG |
2053 | /* When loading sections, we look either for uncompressed section or for |
2054 | compressed section names. */ | |
233a11ab CS |
2055 | |
2056 | static int | |
251d32d9 TG |
2057 | section_is_p (const char *section_name, |
2058 | const struct dwarf2_section_names *names) | |
233a11ab | 2059 | { |
251d32d9 TG |
2060 | if (names->normal != NULL |
2061 | && strcmp (section_name, names->normal) == 0) | |
2062 | return 1; | |
2063 | if (names->compressed != NULL | |
2064 | && strcmp (section_name, names->compressed) == 0) | |
2065 | return 1; | |
2066 | return 0; | |
233a11ab CS |
2067 | } |
2068 | ||
c906108c SS |
2069 | /* This function is mapped across the sections and remembers the |
2070 | offset and size of each of the debugging sections we are interested | |
2071 | in. */ | |
2072 | ||
2073 | static void | |
251d32d9 | 2074 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 2075 | { |
251d32d9 | 2076 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 2077 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
2078 | |
2079 | if (vnames == NULL) | |
2080 | names = &dwarf2_elf_names; | |
2081 | else | |
2082 | names = (const struct dwarf2_debug_sections *) vnames; | |
2083 | ||
dc7650b8 JK |
2084 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2085 | { | |
2086 | } | |
2087 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 2088 | { |
73869dc2 | 2089 | dwarf2_per_objfile->info.s.asection = sectp; |
dce234bc | 2090 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); |
c906108c | 2091 | } |
251d32d9 | 2092 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 2093 | { |
73869dc2 | 2094 | dwarf2_per_objfile->abbrev.s.asection = sectp; |
dce234bc | 2095 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); |
c906108c | 2096 | } |
251d32d9 | 2097 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 2098 | { |
73869dc2 | 2099 | dwarf2_per_objfile->line.s.asection = sectp; |
dce234bc | 2100 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); |
c906108c | 2101 | } |
251d32d9 | 2102 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 2103 | { |
73869dc2 | 2104 | dwarf2_per_objfile->loc.s.asection = sectp; |
dce234bc | 2105 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); |
c906108c | 2106 | } |
251d32d9 | 2107 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 2108 | { |
73869dc2 | 2109 | dwarf2_per_objfile->macinfo.s.asection = sectp; |
dce234bc | 2110 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); |
c906108c | 2111 | } |
cf2c3c16 TT |
2112 | else if (section_is_p (sectp->name, &names->macro)) |
2113 | { | |
73869dc2 | 2114 | dwarf2_per_objfile->macro.s.asection = sectp; |
cf2c3c16 TT |
2115 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); |
2116 | } | |
251d32d9 | 2117 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 2118 | { |
73869dc2 | 2119 | dwarf2_per_objfile->str.s.asection = sectp; |
dce234bc | 2120 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); |
c906108c | 2121 | } |
3019eac3 DE |
2122 | else if (section_is_p (sectp->name, &names->addr)) |
2123 | { | |
73869dc2 | 2124 | dwarf2_per_objfile->addr.s.asection = sectp; |
3019eac3 DE |
2125 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); |
2126 | } | |
251d32d9 | 2127 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 2128 | { |
73869dc2 | 2129 | dwarf2_per_objfile->frame.s.asection = sectp; |
dce234bc | 2130 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2131 | } |
251d32d9 | 2132 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 2133 | { |
73869dc2 | 2134 | dwarf2_per_objfile->eh_frame.s.asection = sectp; |
dc7650b8 | 2135 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2136 | } |
251d32d9 | 2137 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 2138 | { |
73869dc2 | 2139 | dwarf2_per_objfile->ranges.s.asection = sectp; |
dce234bc | 2140 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); |
af34e669 | 2141 | } |
251d32d9 | 2142 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 2143 | { |
8b70b953 TT |
2144 | struct dwarf2_section_info type_section; |
2145 | ||
2146 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 2147 | type_section.s.asection = sectp; |
8b70b953 TT |
2148 | type_section.size = bfd_get_section_size (sectp); |
2149 | ||
2150 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
2151 | &type_section); | |
348e048f | 2152 | } |
251d32d9 | 2153 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd | 2154 | { |
73869dc2 | 2155 | dwarf2_per_objfile->gdb_index.s.asection = sectp; |
9291a0cd TT |
2156 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); |
2157 | } | |
dce234bc | 2158 | |
72dca2f5 FR |
2159 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
2160 | && bfd_section_vma (abfd, sectp) == 0) | |
2161 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
2162 | } |
2163 | ||
fceca515 DE |
2164 | /* A helper function that decides whether a section is empty, |
2165 | or not present. */ | |
9e0ac564 TT |
2166 | |
2167 | static int | |
19ac8c2e | 2168 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2169 | { |
73869dc2 DE |
2170 | if (section->is_virtual) |
2171 | return section->size == 0; | |
2172 | return section->s.asection == NULL || section->size == 0; | |
9e0ac564 TT |
2173 | } |
2174 | ||
3019eac3 DE |
2175 | /* Read the contents of the section INFO. |
2176 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2177 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2178 | of the DWO file. | |
dce234bc | 2179 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2180 | |
dce234bc PP |
2181 | static void |
2182 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2183 | { |
a32a8923 | 2184 | asection *sectp; |
3019eac3 | 2185 | bfd *abfd; |
dce234bc | 2186 | gdb_byte *buf, *retbuf; |
c906108c | 2187 | |
be391dca TT |
2188 | if (info->readin) |
2189 | return; | |
dce234bc | 2190 | info->buffer = NULL; |
be391dca | 2191 | info->readin = 1; |
188dd5d6 | 2192 | |
9e0ac564 | 2193 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2194 | return; |
c906108c | 2195 | |
a32a8923 | 2196 | sectp = get_section_bfd_section (info); |
3019eac3 | 2197 | |
73869dc2 DE |
2198 | /* If this is a virtual section we need to read in the real one first. */ |
2199 | if (info->is_virtual) | |
2200 | { | |
2201 | struct dwarf2_section_info *containing_section = | |
2202 | get_containing_section (info); | |
2203 | ||
2204 | gdb_assert (sectp != NULL); | |
2205 | if ((sectp->flags & SEC_RELOC) != 0) | |
2206 | { | |
2207 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2208 | " supported in section %s [in module %s]"), | |
2209 | get_section_name (info), get_section_file_name (info)); | |
2210 | } | |
2211 | dwarf2_read_section (objfile, containing_section); | |
2212 | /* Other code should have already caught virtual sections that don't | |
2213 | fit. */ | |
2214 | gdb_assert (info->virtual_offset + info->size | |
2215 | <= containing_section->size); | |
2216 | /* If the real section is empty or there was a problem reading the | |
2217 | section we shouldn't get here. */ | |
2218 | gdb_assert (containing_section->buffer != NULL); | |
2219 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2220 | return; | |
2221 | } | |
2222 | ||
4bf44c1c TT |
2223 | /* If the section has relocations, we must read it ourselves. |
2224 | Otherwise we attach it to the BFD. */ | |
2225 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2226 | { |
d521ce57 | 2227 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2228 | return; |
dce234bc | 2229 | } |
dce234bc | 2230 | |
4bf44c1c TT |
2231 | buf = obstack_alloc (&objfile->objfile_obstack, info->size); |
2232 | info->buffer = buf; | |
dce234bc PP |
2233 | |
2234 | /* When debugging .o files, we may need to apply relocations; see | |
2235 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2236 | We never compress sections in .o files, so we only need to | |
2237 | try this when the section is not compressed. */ | |
ac8035ab | 2238 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2239 | if (retbuf != NULL) |
2240 | { | |
2241 | info->buffer = retbuf; | |
2242 | return; | |
2243 | } | |
2244 | ||
a32a8923 DE |
2245 | abfd = get_section_bfd_owner (info); |
2246 | gdb_assert (abfd != NULL); | |
2247 | ||
dce234bc PP |
2248 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2249 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2250 | { |
2251 | error (_("Dwarf Error: Can't read DWARF data" | |
2252 | " in section %s [in module %s]"), | |
2253 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2254 | } | |
dce234bc PP |
2255 | } |
2256 | ||
9e0ac564 TT |
2257 | /* A helper function that returns the size of a section in a safe way. |
2258 | If you are positive that the section has been read before using the | |
2259 | size, then it is safe to refer to the dwarf2_section_info object's | |
2260 | "size" field directly. In other cases, you must call this | |
2261 | function, because for compressed sections the size field is not set | |
2262 | correctly until the section has been read. */ | |
2263 | ||
2264 | static bfd_size_type | |
2265 | dwarf2_section_size (struct objfile *objfile, | |
2266 | struct dwarf2_section_info *info) | |
2267 | { | |
2268 | if (!info->readin) | |
2269 | dwarf2_read_section (objfile, info); | |
2270 | return info->size; | |
2271 | } | |
2272 | ||
dce234bc | 2273 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2274 | SECTION_NAME. */ |
af34e669 | 2275 | |
dce234bc | 2276 | void |
3017a003 TG |
2277 | dwarf2_get_section_info (struct objfile *objfile, |
2278 | enum dwarf2_section_enum sect, | |
d521ce57 | 2279 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2280 | bfd_size_type *sizep) |
2281 | { | |
2282 | struct dwarf2_per_objfile *data | |
2283 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
2284 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
2285 | |
2286 | /* We may see an objfile without any DWARF, in which case we just | |
2287 | return nothing. */ | |
2288 | if (data == NULL) | |
2289 | { | |
2290 | *sectp = NULL; | |
2291 | *bufp = NULL; | |
2292 | *sizep = 0; | |
2293 | return; | |
2294 | } | |
3017a003 TG |
2295 | switch (sect) |
2296 | { | |
2297 | case DWARF2_DEBUG_FRAME: | |
2298 | info = &data->frame; | |
2299 | break; | |
2300 | case DWARF2_EH_FRAME: | |
2301 | info = &data->eh_frame; | |
2302 | break; | |
2303 | default: | |
2304 | gdb_assert_not_reached ("unexpected section"); | |
2305 | } | |
dce234bc | 2306 | |
9e0ac564 | 2307 | dwarf2_read_section (objfile, info); |
dce234bc | 2308 | |
a32a8923 | 2309 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2310 | *bufp = info->buffer; |
2311 | *sizep = info->size; | |
2312 | } | |
2313 | ||
36586728 TT |
2314 | /* A helper function to find the sections for a .dwz file. */ |
2315 | ||
2316 | static void | |
2317 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2318 | { | |
2319 | struct dwz_file *dwz_file = arg; | |
2320 | ||
2321 | /* Note that we only support the standard ELF names, because .dwz | |
2322 | is ELF-only (at the time of writing). */ | |
2323 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2324 | { | |
73869dc2 | 2325 | dwz_file->abbrev.s.asection = sectp; |
36586728 TT |
2326 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2327 | } | |
2328 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2329 | { | |
73869dc2 | 2330 | dwz_file->info.s.asection = sectp; |
36586728 TT |
2331 | dwz_file->info.size = bfd_get_section_size (sectp); |
2332 | } | |
2333 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2334 | { | |
73869dc2 | 2335 | dwz_file->str.s.asection = sectp; |
36586728 TT |
2336 | dwz_file->str.size = bfd_get_section_size (sectp); |
2337 | } | |
2338 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2339 | { | |
73869dc2 | 2340 | dwz_file->line.s.asection = sectp; |
36586728 TT |
2341 | dwz_file->line.size = bfd_get_section_size (sectp); |
2342 | } | |
2343 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2344 | { | |
73869dc2 | 2345 | dwz_file->macro.s.asection = sectp; |
36586728 TT |
2346 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2347 | } | |
2ec9a5e0 TT |
2348 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2349 | { | |
73869dc2 | 2350 | dwz_file->gdb_index.s.asection = sectp; |
2ec9a5e0 TT |
2351 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2352 | } | |
36586728 TT |
2353 | } |
2354 | ||
4db1a1dc TT |
2355 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2356 | there is no .gnu_debugaltlink section in the file. Error if there | |
2357 | is such a section but the file cannot be found. */ | |
36586728 TT |
2358 | |
2359 | static struct dwz_file * | |
2360 | dwarf2_get_dwz_file (void) | |
2361 | { | |
4db1a1dc TT |
2362 | bfd *dwz_bfd; |
2363 | char *data; | |
36586728 TT |
2364 | struct cleanup *cleanup; |
2365 | const char *filename; | |
2366 | struct dwz_file *result; | |
4db1a1dc | 2367 | unsigned long buildid; |
36586728 TT |
2368 | |
2369 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2370 | return dwarf2_per_objfile->dwz_file; | |
2371 | ||
4db1a1dc TT |
2372 | bfd_set_error (bfd_error_no_error); |
2373 | data = bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2374 | &buildid); | |
2375 | if (data == NULL) | |
2376 | { | |
2377 | if (bfd_get_error () == bfd_error_no_error) | |
2378 | return NULL; | |
2379 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2380 | bfd_errmsg (bfd_get_error ())); | |
2381 | } | |
36586728 TT |
2382 | cleanup = make_cleanup (xfree, data); |
2383 | ||
f9d83a0b | 2384 | filename = (const char *) data; |
36586728 TT |
2385 | if (!IS_ABSOLUTE_PATH (filename)) |
2386 | { | |
4262abfb | 2387 | char *abs = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); |
36586728 TT |
2388 | char *rel; |
2389 | ||
2390 | make_cleanup (xfree, abs); | |
2391 | abs = ldirname (abs); | |
2392 | make_cleanup (xfree, abs); | |
2393 | ||
2394 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2395 | make_cleanup (xfree, rel); | |
2396 | filename = rel; | |
2397 | } | |
2398 | ||
2399 | /* The format is just a NUL-terminated file name, followed by the | |
2400 | build-id. For now, though, we ignore the build-id. */ | |
2401 | dwz_bfd = gdb_bfd_open (filename, gnutarget, -1); | |
2402 | if (dwz_bfd == NULL) | |
2403 | error (_("could not read '%s': %s"), filename, | |
2404 | bfd_errmsg (bfd_get_error ())); | |
2405 | ||
2406 | if (!bfd_check_format (dwz_bfd, bfd_object)) | |
2407 | { | |
2408 | gdb_bfd_unref (dwz_bfd); | |
2409 | error (_("file '%s' was not usable: %s"), filename, | |
2410 | bfd_errmsg (bfd_get_error ())); | |
2411 | } | |
2412 | ||
2413 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, | |
2414 | struct dwz_file); | |
2415 | result->dwz_bfd = dwz_bfd; | |
2416 | ||
2417 | bfd_map_over_sections (dwz_bfd, locate_dwz_sections, result); | |
2418 | ||
2419 | do_cleanups (cleanup); | |
2420 | ||
8d2cc612 | 2421 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2422 | return result; |
2423 | } | |
9291a0cd | 2424 | \f |
7b9f3c50 DE |
2425 | /* DWARF quick_symbols_functions support. */ |
2426 | ||
2427 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2428 | unique line tables, so we maintain a separate table of all .debug_line | |
2429 | derived entries to support the sharing. | |
2430 | All the quick functions need is the list of file names. We discard the | |
2431 | line_header when we're done and don't need to record it here. */ | |
2432 | struct quick_file_names | |
2433 | { | |
094b34ac DE |
2434 | /* The data used to construct the hash key. */ |
2435 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2436 | |
2437 | /* The number of entries in file_names, real_names. */ | |
2438 | unsigned int num_file_names; | |
2439 | ||
2440 | /* The file names from the line table, after being run through | |
2441 | file_full_name. */ | |
2442 | const char **file_names; | |
2443 | ||
2444 | /* The file names from the line table after being run through | |
2445 | gdb_realpath. These are computed lazily. */ | |
2446 | const char **real_names; | |
2447 | }; | |
2448 | ||
2449 | /* When using the index (and thus not using psymtabs), each CU has an | |
2450 | object of this type. This is used to hold information needed by | |
2451 | the various "quick" methods. */ | |
2452 | struct dwarf2_per_cu_quick_data | |
2453 | { | |
2454 | /* The file table. This can be NULL if there was no file table | |
2455 | or it's currently not read in. | |
2456 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2457 | struct quick_file_names *file_names; | |
2458 | ||
2459 | /* The corresponding symbol table. This is NULL if symbols for this | |
2460 | CU have not yet been read. */ | |
2461 | struct symtab *symtab; | |
2462 | ||
2463 | /* A temporary mark bit used when iterating over all CUs in | |
2464 | expand_symtabs_matching. */ | |
2465 | unsigned int mark : 1; | |
2466 | ||
2467 | /* True if we've tried to read the file table and found there isn't one. | |
2468 | There will be no point in trying to read it again next time. */ | |
2469 | unsigned int no_file_data : 1; | |
2470 | }; | |
2471 | ||
094b34ac DE |
2472 | /* Utility hash function for a stmt_list_hash. */ |
2473 | ||
2474 | static hashval_t | |
2475 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2476 | { | |
2477 | hashval_t v = 0; | |
2478 | ||
2479 | if (stmt_list_hash->dwo_unit != NULL) | |
2480 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2481 | v += stmt_list_hash->line_offset.sect_off; | |
2482 | return v; | |
2483 | } | |
2484 | ||
2485 | /* Utility equality function for a stmt_list_hash. */ | |
2486 | ||
2487 | static int | |
2488 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2489 | const struct stmt_list_hash *rhs) | |
2490 | { | |
2491 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2492 | return 0; | |
2493 | if (lhs->dwo_unit != NULL | |
2494 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2495 | return 0; | |
2496 | ||
2497 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2498 | } | |
2499 | ||
7b9f3c50 DE |
2500 | /* Hash function for a quick_file_names. */ |
2501 | ||
2502 | static hashval_t | |
2503 | hash_file_name_entry (const void *e) | |
2504 | { | |
2505 | const struct quick_file_names *file_data = e; | |
2506 | ||
094b34ac | 2507 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2508 | } |
2509 | ||
2510 | /* Equality function for a quick_file_names. */ | |
2511 | ||
2512 | static int | |
2513 | eq_file_name_entry (const void *a, const void *b) | |
2514 | { | |
2515 | const struct quick_file_names *ea = a; | |
2516 | const struct quick_file_names *eb = b; | |
2517 | ||
094b34ac | 2518 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2519 | } |
2520 | ||
2521 | /* Delete function for a quick_file_names. */ | |
2522 | ||
2523 | static void | |
2524 | delete_file_name_entry (void *e) | |
2525 | { | |
2526 | struct quick_file_names *file_data = e; | |
2527 | int i; | |
2528 | ||
2529 | for (i = 0; i < file_data->num_file_names; ++i) | |
2530 | { | |
2531 | xfree ((void*) file_data->file_names[i]); | |
2532 | if (file_data->real_names) | |
2533 | xfree ((void*) file_data->real_names[i]); | |
2534 | } | |
2535 | ||
2536 | /* The space for the struct itself lives on objfile_obstack, | |
2537 | so we don't free it here. */ | |
2538 | } | |
2539 | ||
2540 | /* Create a quick_file_names hash table. */ | |
2541 | ||
2542 | static htab_t | |
2543 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2544 | { | |
2545 | return htab_create_alloc (nr_initial_entries, | |
2546 | hash_file_name_entry, eq_file_name_entry, | |
2547 | delete_file_name_entry, xcalloc, xfree); | |
2548 | } | |
9291a0cd | 2549 | |
918dd910 JK |
2550 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2551 | have to be created afterwards. You should call age_cached_comp_units after | |
2552 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2553 | ||
2554 | static void | |
2555 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2556 | { | |
3019eac3 | 2557 | if (per_cu->is_debug_types) |
e5fe5e75 | 2558 | load_full_type_unit (per_cu); |
918dd910 | 2559 | else |
95554aad | 2560 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2561 | |
918dd910 | 2562 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2563 | |
2564 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2565 | } |
2566 | ||
a0f42c21 | 2567 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2568 | |
9291a0cd | 2569 | static void |
a0f42c21 | 2570 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2571 | { |
2572 | struct cleanup *back_to; | |
2573 | ||
f4dc4d17 DE |
2574 | /* Skip type_unit_groups, reading the type units they contain |
2575 | is handled elsewhere. */ | |
2576 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2577 | return; | |
2578 | ||
9291a0cd TT |
2579 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2580 | ||
95554aad TT |
2581 | if (dwarf2_per_objfile->using_index |
2582 | ? per_cu->v.quick->symtab == NULL | |
2583 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
2584 | { | |
2585 | queue_comp_unit (per_cu, language_minimal); | |
2586 | load_cu (per_cu); | |
89e63ee4 DE |
2587 | |
2588 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2589 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2590 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2591 | if (!per_cu->is_debug_types | |
2592 | && per_cu->cu->dwo_unit != NULL | |
2593 | && dwarf2_per_objfile->index_table != NULL | |
2594 | && dwarf2_per_objfile->index_table->version <= 7 | |
2595 | /* DWP files aren't supported yet. */ | |
2596 | && get_dwp_file () == NULL) | |
2597 | queue_and_load_all_dwo_tus (per_cu); | |
95554aad | 2598 | } |
9291a0cd | 2599 | |
a0f42c21 | 2600 | process_queue (); |
9291a0cd TT |
2601 | |
2602 | /* Age the cache, releasing compilation units that have not | |
2603 | been used recently. */ | |
2604 | age_cached_comp_units (); | |
2605 | ||
2606 | do_cleanups (back_to); | |
2607 | } | |
2608 | ||
2609 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2610 | the objfile from which this CU came. Returns the resulting symbol | |
2611 | table. */ | |
2fdf6df6 | 2612 | |
9291a0cd | 2613 | static struct symtab * |
a0f42c21 | 2614 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2615 | { |
95554aad | 2616 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
2617 | if (!per_cu->v.quick->symtab) |
2618 | { | |
2619 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2620 | increment_reading_symtab (); | |
a0f42c21 | 2621 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2622 | process_cu_includes (); |
9291a0cd TT |
2623 | do_cleanups (back_to); |
2624 | } | |
2625 | return per_cu->v.quick->symtab; | |
2626 | } | |
2627 | ||
f4dc4d17 DE |
2628 | /* Return the CU given its index. |
2629 | ||
2630 | This is intended for loops like: | |
2631 | ||
2632 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2633 | + dwarf2_per_objfile->n_type_units); ++i) | |
2634 | { | |
2635 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2636 | ||
2637 | ...; | |
2638 | } | |
2639 | */ | |
2fdf6df6 | 2640 | |
1fd400ff TT |
2641 | static struct dwarf2_per_cu_data * |
2642 | dw2_get_cu (int index) | |
2643 | { | |
2644 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2645 | { | |
f4dc4d17 | 2646 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2647 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2648 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2649 | } |
2650 | ||
2651 | return dwarf2_per_objfile->all_comp_units[index]; | |
2652 | } | |
2653 | ||
2654 | /* Return the primary CU given its index. | |
2655 | The difference between this function and dw2_get_cu is in the handling | |
2656 | of type units (TUs). Here we return the type_unit_group object. | |
2657 | ||
2658 | This is intended for loops like: | |
2659 | ||
2660 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2661 | + dwarf2_per_objfile->n_type_unit_groups); ++i) | |
2662 | { | |
2663 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); | |
2664 | ||
2665 | ...; | |
2666 | } | |
2667 | */ | |
2668 | ||
2669 | static struct dwarf2_per_cu_data * | |
2670 | dw2_get_primary_cu (int index) | |
2671 | { | |
2672 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2673 | { | |
1fd400ff | 2674 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2675 | gdb_assert (index < dwarf2_per_objfile->n_type_unit_groups); |
2676 | return &dwarf2_per_objfile->all_type_unit_groups[index]->per_cu; | |
1fd400ff | 2677 | } |
f4dc4d17 | 2678 | |
1fd400ff TT |
2679 | return dwarf2_per_objfile->all_comp_units[index]; |
2680 | } | |
2681 | ||
2ec9a5e0 TT |
2682 | /* A helper for create_cus_from_index that handles a given list of |
2683 | CUs. */ | |
2fdf6df6 | 2684 | |
74a0d9f6 | 2685 | static void |
2ec9a5e0 TT |
2686 | create_cus_from_index_list (struct objfile *objfile, |
2687 | const gdb_byte *cu_list, offset_type n_elements, | |
2688 | struct dwarf2_section_info *section, | |
2689 | int is_dwz, | |
2690 | int base_offset) | |
9291a0cd TT |
2691 | { |
2692 | offset_type i; | |
9291a0cd | 2693 | |
2ec9a5e0 | 2694 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2695 | { |
2696 | struct dwarf2_per_cu_data *the_cu; | |
2697 | ULONGEST offset, length; | |
2698 | ||
74a0d9f6 JK |
2699 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2700 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2701 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2702 | cu_list += 2 * 8; |
2703 | ||
2704 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2705 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2706 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2707 | the_cu->length = length; |
2708 | the_cu->objfile = objfile; | |
8a0459fd | 2709 | the_cu->section = section; |
9291a0cd TT |
2710 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2711 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2712 | the_cu->is_dwz = is_dwz; |
2713 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2714 | } |
9291a0cd TT |
2715 | } |
2716 | ||
2ec9a5e0 | 2717 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2718 | the CU objects for this objfile. */ |
2ec9a5e0 | 2719 | |
74a0d9f6 | 2720 | static void |
2ec9a5e0 TT |
2721 | create_cus_from_index (struct objfile *objfile, |
2722 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2723 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2724 | { | |
2725 | struct dwz_file *dwz; | |
2726 | ||
2727 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
2728 | dwarf2_per_objfile->all_comp_units | |
2729 | = obstack_alloc (&objfile->objfile_obstack, | |
2730 | dwarf2_per_objfile->n_comp_units | |
2731 | * sizeof (struct dwarf2_per_cu_data *)); | |
2732 | ||
74a0d9f6 JK |
2733 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2734 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2735 | |
2736 | if (dwz_elements == 0) | |
74a0d9f6 | 2737 | return; |
2ec9a5e0 TT |
2738 | |
2739 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2740 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2741 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2742 | } |
2743 | ||
1fd400ff | 2744 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2745 | |
74a0d9f6 | 2746 | static void |
673bfd45 | 2747 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2748 | struct dwarf2_section_info *section, |
673bfd45 DE |
2749 | const gdb_byte *bytes, |
2750 | offset_type elements) | |
1fd400ff TT |
2751 | { |
2752 | offset_type i; | |
673bfd45 | 2753 | htab_t sig_types_hash; |
1fd400ff | 2754 | |
d467dd73 DE |
2755 | dwarf2_per_objfile->n_type_units = elements / 3; |
2756 | dwarf2_per_objfile->all_type_units | |
a2ce51a0 DE |
2757 | = xmalloc (dwarf2_per_objfile->n_type_units |
2758 | * sizeof (struct signatured_type *)); | |
1fd400ff | 2759 | |
673bfd45 | 2760 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2761 | |
2762 | for (i = 0; i < elements; i += 3) | |
2763 | { | |
52dc124a DE |
2764 | struct signatured_type *sig_type; |
2765 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2766 | void **slot; |
2767 | ||
74a0d9f6 JK |
2768 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2769 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2770 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2771 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2772 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2773 | bytes += 3 * 8; | |
2774 | ||
52dc124a | 2775 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2776 | struct signatured_type); |
52dc124a | 2777 | sig_type->signature = signature; |
3019eac3 DE |
2778 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2779 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 2780 | sig_type->per_cu.section = section; |
52dc124a DE |
2781 | sig_type->per_cu.offset.sect_off = offset; |
2782 | sig_type->per_cu.objfile = objfile; | |
2783 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2784 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2785 | struct dwarf2_per_cu_quick_data); | |
2786 | ||
52dc124a DE |
2787 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2788 | *slot = sig_type; | |
1fd400ff | 2789 | |
b4dd5633 | 2790 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2791 | } |
2792 | ||
673bfd45 | 2793 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2794 | } |
2795 | ||
9291a0cd TT |
2796 | /* Read the address map data from the mapped index, and use it to |
2797 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2798 | |
9291a0cd TT |
2799 | static void |
2800 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2801 | { | |
2802 | const gdb_byte *iter, *end; | |
2803 | struct obstack temp_obstack; | |
2804 | struct addrmap *mutable_map; | |
2805 | struct cleanup *cleanup; | |
2806 | CORE_ADDR baseaddr; | |
2807 | ||
2808 | obstack_init (&temp_obstack); | |
2809 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2810 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2811 | ||
2812 | iter = index->address_table; | |
2813 | end = iter + index->address_table_size; | |
2814 | ||
2815 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2816 | ||
2817 | while (iter < end) | |
2818 | { | |
2819 | ULONGEST hi, lo, cu_index; | |
2820 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2821 | iter += 8; | |
2822 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2823 | iter += 8; | |
2824 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2825 | iter += 4; | |
f652bce2 | 2826 | |
24a55014 | 2827 | if (lo > hi) |
f652bce2 | 2828 | { |
24a55014 DE |
2829 | complaint (&symfile_complaints, |
2830 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 2831 | hex_string (lo), hex_string (hi)); |
24a55014 | 2832 | continue; |
f652bce2 | 2833 | } |
24a55014 DE |
2834 | |
2835 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
2836 | { |
2837 | complaint (&symfile_complaints, | |
2838 | _(".gdb_index address table has invalid CU number %u"), | |
2839 | (unsigned) cu_index); | |
24a55014 | 2840 | continue; |
f652bce2 | 2841 | } |
24a55014 DE |
2842 | |
2843 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
2844 | dw2_get_cu (cu_index)); | |
9291a0cd TT |
2845 | } |
2846 | ||
2847 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2848 | &objfile->objfile_obstack); | |
2849 | do_cleanups (cleanup); | |
2850 | } | |
2851 | ||
59d7bcaf JK |
2852 | /* The hash function for strings in the mapped index. This is the same as |
2853 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2854 | implementation. This is necessary because the hash function is tied to the | |
2855 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2856 | SYMBOL_HASH_NEXT. |
2857 | ||
2858 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2859 | |
9291a0cd | 2860 | static hashval_t |
559a7a62 | 2861 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2862 | { |
2863 | const unsigned char *str = (const unsigned char *) p; | |
2864 | hashval_t r = 0; | |
2865 | unsigned char c; | |
2866 | ||
2867 | while ((c = *str++) != 0) | |
559a7a62 JK |
2868 | { |
2869 | if (index_version >= 5) | |
2870 | c = tolower (c); | |
2871 | r = r * 67 + c - 113; | |
2872 | } | |
9291a0cd TT |
2873 | |
2874 | return r; | |
2875 | } | |
2876 | ||
2877 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2878 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2879 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2880 | |
9291a0cd TT |
2881 | static int |
2882 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2883 | offset_type **vec_out) | |
2884 | { | |
0cf03b49 JK |
2885 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2886 | offset_type hash; | |
9291a0cd | 2887 | offset_type slot, step; |
559a7a62 | 2888 | int (*cmp) (const char *, const char *); |
9291a0cd | 2889 | |
0cf03b49 JK |
2890 | if (current_language->la_language == language_cplus |
2891 | || current_language->la_language == language_java | |
2892 | || current_language->la_language == language_fortran) | |
2893 | { | |
2894 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2895 | not contain any. */ | |
2896 | const char *paren = strchr (name, '('); | |
2897 | ||
2898 | if (paren) | |
2899 | { | |
2900 | char *dup; | |
2901 | ||
2902 | dup = xmalloc (paren - name + 1); | |
2903 | memcpy (dup, name, paren - name); | |
2904 | dup[paren - name] = 0; | |
2905 | ||
2906 | make_cleanup (xfree, dup); | |
2907 | name = dup; | |
2908 | } | |
2909 | } | |
2910 | ||
559a7a62 | 2911 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2912 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2913 | simulate our NAME being searched is also lowercased. */ |
2914 | hash = mapped_index_string_hash ((index->version == 4 | |
2915 | && case_sensitivity == case_sensitive_off | |
2916 | ? 5 : index->version), | |
2917 | name); | |
2918 | ||
3876f04e DE |
2919 | slot = hash & (index->symbol_table_slots - 1); |
2920 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2921 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2922 | |
2923 | for (;;) | |
2924 | { | |
2925 | /* Convert a slot number to an offset into the table. */ | |
2926 | offset_type i = 2 * slot; | |
2927 | const char *str; | |
3876f04e | 2928 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2929 | { |
2930 | do_cleanups (back_to); | |
2931 | return 0; | |
2932 | } | |
9291a0cd | 2933 | |
3876f04e | 2934 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2935 | if (!cmp (name, str)) |
9291a0cd TT |
2936 | { |
2937 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2938 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2939 | do_cleanups (back_to); |
9291a0cd TT |
2940 | return 1; |
2941 | } | |
2942 | ||
3876f04e | 2943 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2944 | } |
2945 | } | |
2946 | ||
2ec9a5e0 TT |
2947 | /* A helper function that reads the .gdb_index from SECTION and fills |
2948 | in MAP. FILENAME is the name of the file containing the section; | |
2949 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
2950 | ok to use deprecated sections. | |
2951 | ||
2952 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2953 | out parameters that are filled in with information about the CU and | |
2954 | TU lists in the section. | |
2955 | ||
2956 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 2957 | |
9291a0cd | 2958 | static int |
2ec9a5e0 TT |
2959 | read_index_from_section (struct objfile *objfile, |
2960 | const char *filename, | |
2961 | int deprecated_ok, | |
2962 | struct dwarf2_section_info *section, | |
2963 | struct mapped_index *map, | |
2964 | const gdb_byte **cu_list, | |
2965 | offset_type *cu_list_elements, | |
2966 | const gdb_byte **types_list, | |
2967 | offset_type *types_list_elements) | |
9291a0cd | 2968 | { |
948f8e3d | 2969 | const gdb_byte *addr; |
2ec9a5e0 | 2970 | offset_type version; |
b3b272e1 | 2971 | offset_type *metadata; |
1fd400ff | 2972 | int i; |
9291a0cd | 2973 | |
2ec9a5e0 | 2974 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 2975 | return 0; |
82430852 JK |
2976 | |
2977 | /* Older elfutils strip versions could keep the section in the main | |
2978 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 2979 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
2980 | return 0; |
2981 | ||
2ec9a5e0 | 2982 | dwarf2_read_section (objfile, section); |
9291a0cd | 2983 | |
2ec9a5e0 | 2984 | addr = section->buffer; |
9291a0cd | 2985 | /* Version check. */ |
1fd400ff | 2986 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2987 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2988 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2989 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2990 | indices. */ |
831adc1f | 2991 | if (version < 4) |
481860b3 GB |
2992 | { |
2993 | static int warning_printed = 0; | |
2994 | if (!warning_printed) | |
2995 | { | |
2996 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2997 | filename); |
481860b3 GB |
2998 | warning_printed = 1; |
2999 | } | |
3000 | return 0; | |
3001 | } | |
3002 | /* Index version 4 uses a different hash function than index version | |
3003 | 5 and later. | |
3004 | ||
3005 | Versions earlier than 6 did not emit psymbols for inlined | |
3006 | functions. Using these files will cause GDB not to be able to | |
3007 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3008 | indices unless the user has done |
3009 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3010 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3011 | { |
3012 | static int warning_printed = 0; | |
3013 | if (!warning_printed) | |
3014 | { | |
e615022a DE |
3015 | warning (_("\ |
3016 | Skipping deprecated .gdb_index section in %s.\n\ | |
3017 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3018 | to use the section anyway."), | |
2ec9a5e0 | 3019 | filename); |
481860b3 GB |
3020 | warning_printed = 1; |
3021 | } | |
3022 | return 0; | |
3023 | } | |
796a7ff8 DE |
3024 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
3025 | of the TU (for symbols coming from TUs). It's just a performance bug, and | |
3026 | we can't distinguish gdb-generated indices from gold-generated ones, so | |
3027 | nothing to do here. */ | |
3028 | ||
481860b3 | 3029 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3030 | longer backward compatible. */ |
796a7ff8 | 3031 | if (version > 8) |
594e8718 | 3032 | return 0; |
9291a0cd | 3033 | |
559a7a62 | 3034 | map->version = version; |
2ec9a5e0 | 3035 | map->total_size = section->size; |
9291a0cd TT |
3036 | |
3037 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3038 | |
3039 | i = 0; | |
2ec9a5e0 TT |
3040 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3041 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3042 | / 8); | |
1fd400ff TT |
3043 | ++i; |
3044 | ||
2ec9a5e0 TT |
3045 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3046 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3047 | - MAYBE_SWAP (metadata[i])) | |
3048 | / 8); | |
987d643c | 3049 | ++i; |
1fd400ff TT |
3050 | |
3051 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3052 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3053 | - MAYBE_SWAP (metadata[i])); | |
3054 | ++i; | |
3055 | ||
3876f04e DE |
3056 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3057 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3058 | - MAYBE_SWAP (metadata[i])) | |
3059 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3060 | ++i; |
9291a0cd | 3061 | |
f9d83a0b | 3062 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3063 | |
2ec9a5e0 TT |
3064 | return 1; |
3065 | } | |
3066 | ||
3067 | ||
3068 | /* Read the index file. If everything went ok, initialize the "quick" | |
3069 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
3070 | ||
3071 | static int | |
3072 | dwarf2_read_index (struct objfile *objfile) | |
3073 | { | |
3074 | struct mapped_index local_map, *map; | |
3075 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3076 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3077 | struct dwz_file *dwz; |
2ec9a5e0 | 3078 | |
4262abfb | 3079 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3080 | use_deprecated_index_sections, |
3081 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3082 | &cu_list, &cu_list_elements, | |
3083 | &types_list, &types_list_elements)) | |
3084 | return 0; | |
3085 | ||
0fefef59 | 3086 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3087 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3088 | return 0; |
3089 | ||
2ec9a5e0 TT |
3090 | /* If there is a .dwz file, read it so we can get its CU list as |
3091 | well. */ | |
4db1a1dc TT |
3092 | dwz = dwarf2_get_dwz_file (); |
3093 | if (dwz != NULL) | |
2ec9a5e0 | 3094 | { |
2ec9a5e0 TT |
3095 | struct mapped_index dwz_map; |
3096 | const gdb_byte *dwz_types_ignore; | |
3097 | offset_type dwz_types_elements_ignore; | |
3098 | ||
3099 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3100 | 1, | |
3101 | &dwz->gdb_index, &dwz_map, | |
3102 | &dwz_list, &dwz_list_elements, | |
3103 | &dwz_types_ignore, | |
3104 | &dwz_types_elements_ignore)) | |
3105 | { | |
3106 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3107 | bfd_get_filename (dwz->dwz_bfd)); | |
3108 | return 0; | |
3109 | } | |
3110 | } | |
3111 | ||
74a0d9f6 JK |
3112 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3113 | dwz_list_elements); | |
1fd400ff | 3114 | |
8b70b953 TT |
3115 | if (types_list_elements) |
3116 | { | |
3117 | struct dwarf2_section_info *section; | |
3118 | ||
3119 | /* We can only handle a single .debug_types when we have an | |
3120 | index. */ | |
3121 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3122 | return 0; | |
3123 | ||
3124 | section = VEC_index (dwarf2_section_info_def, | |
3125 | dwarf2_per_objfile->types, 0); | |
3126 | ||
74a0d9f6 JK |
3127 | create_signatured_type_table_from_index (objfile, section, types_list, |
3128 | types_list_elements); | |
8b70b953 | 3129 | } |
9291a0cd | 3130 | |
2ec9a5e0 TT |
3131 | create_addrmap_from_index (objfile, &local_map); |
3132 | ||
3133 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
3134 | *map = local_map; | |
9291a0cd TT |
3135 | |
3136 | dwarf2_per_objfile->index_table = map; | |
3137 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3138 | dwarf2_per_objfile->quick_file_names_table = |
3139 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3140 | |
3141 | return 1; | |
3142 | } | |
3143 | ||
3144 | /* A helper for the "quick" functions which sets the global | |
3145 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3146 | |
9291a0cd TT |
3147 | static void |
3148 | dw2_setup (struct objfile *objfile) | |
3149 | { | |
3150 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
3151 | gdb_assert (dwarf2_per_objfile); | |
3152 | } | |
3153 | ||
dee91e82 | 3154 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3155 | |
dee91e82 DE |
3156 | static void |
3157 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3158 | const gdb_byte *info_ptr, |
dee91e82 DE |
3159 | struct die_info *comp_unit_die, |
3160 | int has_children, | |
3161 | void *data) | |
9291a0cd | 3162 | { |
dee91e82 DE |
3163 | struct dwarf2_cu *cu = reader->cu; |
3164 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3165 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3166 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 3167 | struct line_header *lh; |
9291a0cd | 3168 | struct attribute *attr; |
dee91e82 | 3169 | int i; |
15d034d0 | 3170 | const char *name, *comp_dir; |
7b9f3c50 DE |
3171 | void **slot; |
3172 | struct quick_file_names *qfn; | |
3173 | unsigned int line_offset; | |
9291a0cd | 3174 | |
0186c6a7 DE |
3175 | gdb_assert (! this_cu->is_debug_types); |
3176 | ||
07261596 TT |
3177 | /* Our callers never want to match partial units -- instead they |
3178 | will match the enclosing full CU. */ | |
3179 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3180 | { | |
3181 | this_cu->v.quick->no_file_data = 1; | |
3182 | return; | |
3183 | } | |
3184 | ||
0186c6a7 | 3185 | lh_cu = this_cu; |
7b9f3c50 DE |
3186 | lh = NULL; |
3187 | slot = NULL; | |
3188 | line_offset = 0; | |
dee91e82 DE |
3189 | |
3190 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
3191 | if (attr) |
3192 | { | |
7b9f3c50 DE |
3193 | struct quick_file_names find_entry; |
3194 | ||
3195 | line_offset = DW_UNSND (attr); | |
3196 | ||
3197 | /* We may have already read in this line header (TU line header sharing). | |
3198 | If we have we're done. */ | |
094b34ac DE |
3199 | find_entry.hash.dwo_unit = cu->dwo_unit; |
3200 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3201 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3202 | &find_entry, INSERT); | |
3203 | if (*slot != NULL) | |
3204 | { | |
094b34ac | 3205 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 3206 | return; |
7b9f3c50 DE |
3207 | } |
3208 | ||
3019eac3 | 3209 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3210 | } |
3211 | if (lh == NULL) | |
3212 | { | |
094b34ac | 3213 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3214 | return; |
9291a0cd TT |
3215 | } |
3216 | ||
7b9f3c50 | 3217 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
3218 | qfn->hash.dwo_unit = cu->dwo_unit; |
3219 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3220 | gdb_assert (slot != NULL); |
3221 | *slot = qfn; | |
9291a0cd | 3222 | |
dee91e82 | 3223 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 3224 | |
7b9f3c50 DE |
3225 | qfn->num_file_names = lh->num_file_names; |
3226 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
3227 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 3228 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
3229 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
3230 | qfn->real_names = NULL; | |
9291a0cd | 3231 | |
7b9f3c50 | 3232 | free_line_header (lh); |
7b9f3c50 | 3233 | |
094b34ac | 3234 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3235 | } |
3236 | ||
3237 | /* A helper for the "quick" functions which attempts to read the line | |
3238 | table for THIS_CU. */ | |
3239 | ||
3240 | static struct quick_file_names * | |
e4a48d9d | 3241 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3242 | { |
0186c6a7 DE |
3243 | /* This should never be called for TUs. */ |
3244 | gdb_assert (! this_cu->is_debug_types); | |
3245 | /* Nor type unit groups. */ | |
3246 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3247 | |
dee91e82 DE |
3248 | if (this_cu->v.quick->file_names != NULL) |
3249 | return this_cu->v.quick->file_names; | |
3250 | /* If we know there is no line data, no point in looking again. */ | |
3251 | if (this_cu->v.quick->no_file_data) | |
3252 | return NULL; | |
3253 | ||
0186c6a7 | 3254 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3255 | |
3256 | if (this_cu->v.quick->no_file_data) | |
3257 | return NULL; | |
3258 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3259 | } |
3260 | ||
3261 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3262 | real path for a given file name from the line table. */ |
2fdf6df6 | 3263 | |
9291a0cd | 3264 | static const char * |
7b9f3c50 DE |
3265 | dw2_get_real_path (struct objfile *objfile, |
3266 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3267 | { |
7b9f3c50 DE |
3268 | if (qfn->real_names == NULL) |
3269 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
3270 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 3271 | |
7b9f3c50 DE |
3272 | if (qfn->real_names[index] == NULL) |
3273 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 3274 | |
7b9f3c50 | 3275 | return qfn->real_names[index]; |
9291a0cd TT |
3276 | } |
3277 | ||
3278 | static struct symtab * | |
3279 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3280 | { | |
3281 | int index; | |
ae2de4f8 | 3282 | |
9291a0cd TT |
3283 | dw2_setup (objfile); |
3284 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 3285 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
3286 | } |
3287 | ||
7b9f3c50 DE |
3288 | /* Traversal function for dw2_forget_cached_source_info. */ |
3289 | ||
3290 | static int | |
3291 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3292 | { |
7b9f3c50 | 3293 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3294 | |
7b9f3c50 | 3295 | if (file_data->real_names) |
9291a0cd | 3296 | { |
7b9f3c50 | 3297 | int i; |
9291a0cd | 3298 | |
7b9f3c50 | 3299 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3300 | { |
7b9f3c50 DE |
3301 | xfree ((void*) file_data->real_names[i]); |
3302 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3303 | } |
3304 | } | |
7b9f3c50 DE |
3305 | |
3306 | return 1; | |
3307 | } | |
3308 | ||
3309 | static void | |
3310 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3311 | { | |
3312 | dw2_setup (objfile); | |
3313 | ||
3314 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3315 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3316 | } |
3317 | ||
f8eba3c6 TT |
3318 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3319 | the symtabs and calls the iterator. */ | |
3320 | ||
3321 | static int | |
3322 | dw2_map_expand_apply (struct objfile *objfile, | |
3323 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3324 | const char *name, const char *real_path, |
f8eba3c6 TT |
3325 | int (*callback) (struct symtab *, void *), |
3326 | void *data) | |
3327 | { | |
3328 | struct symtab *last_made = objfile->symtabs; | |
3329 | ||
3330 | /* Don't visit already-expanded CUs. */ | |
3331 | if (per_cu->v.quick->symtab) | |
3332 | return 0; | |
3333 | ||
3334 | /* This may expand more than one symtab, and we want to iterate over | |
3335 | all of them. */ | |
a0f42c21 | 3336 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3337 | |
f5b95b50 | 3338 | return iterate_over_some_symtabs (name, real_path, callback, data, |
f8eba3c6 TT |
3339 | objfile->symtabs, last_made); |
3340 | } | |
3341 | ||
3342 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3343 | ||
9291a0cd | 3344 | static int |
f8eba3c6 | 3345 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3346 | const char *real_path, |
f8eba3c6 TT |
3347 | int (*callback) (struct symtab *, void *), |
3348 | void *data) | |
9291a0cd TT |
3349 | { |
3350 | int i; | |
c011a4f4 | 3351 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3352 | |
3353 | dw2_setup (objfile); | |
ae2de4f8 | 3354 | |
848e3e78 DE |
3355 | /* The rule is CUs specify all the files, including those used by |
3356 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3357 | |
848e3e78 | 3358 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3359 | { |
3360 | int j; | |
f4dc4d17 | 3361 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3362 | struct quick_file_names *file_data; |
9291a0cd | 3363 | |
3d7bb9d9 | 3364 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3365 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3366 | continue; |
3367 | ||
e4a48d9d | 3368 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3369 | if (file_data == NULL) |
9291a0cd TT |
3370 | continue; |
3371 | ||
7b9f3c50 | 3372 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3373 | { |
7b9f3c50 | 3374 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3375 | const char *this_real_name; |
9291a0cd | 3376 | |
af529f8f | 3377 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3378 | { |
f5b95b50 | 3379 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3380 | callback, data)) |
3381 | return 1; | |
288e77a7 | 3382 | continue; |
4aac40c8 | 3383 | } |
9291a0cd | 3384 | |
c011a4f4 DE |
3385 | /* Before we invoke realpath, which can get expensive when many |
3386 | files are involved, do a quick comparison of the basenames. */ | |
3387 | if (! basenames_may_differ | |
3388 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3389 | continue; | |
3390 | ||
da235a7c JK |
3391 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3392 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3393 | { |
da235a7c JK |
3394 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3395 | callback, data)) | |
3396 | return 1; | |
288e77a7 | 3397 | continue; |
da235a7c | 3398 | } |
9291a0cd | 3399 | |
da235a7c JK |
3400 | if (real_path != NULL) |
3401 | { | |
af529f8f JK |
3402 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3403 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3404 | if (this_real_name != NULL |
af529f8f | 3405 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3406 | { |
f5b95b50 | 3407 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3408 | callback, data)) |
3409 | return 1; | |
288e77a7 | 3410 | continue; |
9291a0cd TT |
3411 | } |
3412 | } | |
3413 | } | |
3414 | } | |
3415 | ||
9291a0cd TT |
3416 | return 0; |
3417 | } | |
3418 | ||
da51c347 DE |
3419 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3420 | ||
3421 | struct dw2_symtab_iterator | |
9291a0cd | 3422 | { |
da51c347 DE |
3423 | /* The internalized form of .gdb_index. */ |
3424 | struct mapped_index *index; | |
3425 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3426 | int want_specific_block; | |
3427 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3428 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3429 | int block_index; | |
3430 | /* The kind of symbol we're looking for. */ | |
3431 | domain_enum domain; | |
3432 | /* The list of CUs from the index entry of the symbol, | |
3433 | or NULL if not found. */ | |
3434 | offset_type *vec; | |
3435 | /* The next element in VEC to look at. */ | |
3436 | int next; | |
3437 | /* The number of elements in VEC, or zero if there is no match. */ | |
3438 | int length; | |
3439 | }; | |
9291a0cd | 3440 | |
da51c347 DE |
3441 | /* Initialize the index symtab iterator ITER. |
3442 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3443 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3444 | |
9291a0cd | 3445 | static void |
da51c347 DE |
3446 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3447 | struct mapped_index *index, | |
3448 | int want_specific_block, | |
3449 | int block_index, | |
3450 | domain_enum domain, | |
3451 | const char *name) | |
3452 | { | |
3453 | iter->index = index; | |
3454 | iter->want_specific_block = want_specific_block; | |
3455 | iter->block_index = block_index; | |
3456 | iter->domain = domain; | |
3457 | iter->next = 0; | |
3458 | ||
3459 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3460 | iter->length = MAYBE_SWAP (*iter->vec); | |
3461 | else | |
3462 | { | |
3463 | iter->vec = NULL; | |
3464 | iter->length = 0; | |
3465 | } | |
3466 | } | |
3467 | ||
3468 | /* Return the next matching CU or NULL if there are no more. */ | |
3469 | ||
3470 | static struct dwarf2_per_cu_data * | |
3471 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3472 | { | |
3473 | for ( ; iter->next < iter->length; ++iter->next) | |
3474 | { | |
3475 | offset_type cu_index_and_attrs = | |
3476 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3477 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 3478 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
3479 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3480 | /* This value is only valid for index versions >= 7. */ | |
3481 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3482 | gdb_index_symbol_kind symbol_kind = | |
3483 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3484 | /* Only check the symbol attributes if they're present. | |
3485 | Indices prior to version 7 don't record them, | |
3486 | and indices >= 7 may elide them for certain symbols | |
3487 | (gold does this). */ | |
3488 | int attrs_valid = | |
3489 | (iter->index->version >= 7 | |
3490 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3491 | ||
3190f0c6 DE |
3492 | /* Don't crash on bad data. */ |
3493 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3494 | + dwarf2_per_objfile->n_type_units)) | |
3495 | { | |
3496 | complaint (&symfile_complaints, | |
3497 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3498 | " [in module %s]"), |
3499 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3500 | continue; |
3501 | } | |
3502 | ||
3503 | per_cu = dw2_get_cu (cu_index); | |
3504 | ||
da51c347 DE |
3505 | /* Skip if already read in. */ |
3506 | if (per_cu->v.quick->symtab) | |
3507 | continue; | |
3508 | ||
3509 | if (attrs_valid | |
3510 | && iter->want_specific_block | |
3511 | && want_static != is_static) | |
3512 | continue; | |
3513 | ||
3514 | /* Only check the symbol's kind if it has one. */ | |
3515 | if (attrs_valid) | |
3516 | { | |
3517 | switch (iter->domain) | |
3518 | { | |
3519 | case VAR_DOMAIN: | |
3520 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3521 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3522 | /* Some types are also in VAR_DOMAIN. */ | |
3523 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3524 | continue; | |
3525 | break; | |
3526 | case STRUCT_DOMAIN: | |
3527 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3528 | continue; | |
3529 | break; | |
3530 | case LABEL_DOMAIN: | |
3531 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3532 | continue; | |
3533 | break; | |
3534 | default: | |
3535 | break; | |
3536 | } | |
3537 | } | |
3538 | ||
3539 | ++iter->next; | |
3540 | return per_cu; | |
3541 | } | |
3542 | ||
3543 | return NULL; | |
3544 | } | |
3545 | ||
3546 | static struct symtab * | |
3547 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
3548 | const char *name, domain_enum domain) | |
9291a0cd | 3549 | { |
da51c347 | 3550 | struct symtab *stab_best = NULL; |
156942c7 DE |
3551 | struct mapped_index *index; |
3552 | ||
9291a0cd TT |
3553 | dw2_setup (objfile); |
3554 | ||
156942c7 DE |
3555 | index = dwarf2_per_objfile->index_table; |
3556 | ||
da51c347 | 3557 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3558 | if (index) |
9291a0cd | 3559 | { |
da51c347 DE |
3560 | struct dw2_symtab_iterator iter; |
3561 | struct dwarf2_per_cu_data *per_cu; | |
3562 | ||
3563 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3564 | |
da51c347 | 3565 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3566 | { |
da51c347 DE |
3567 | struct symbol *sym = NULL; |
3568 | struct symtab *stab = dw2_instantiate_symtab (per_cu); | |
3569 | ||
3570 | /* Some caution must be observed with overloaded functions | |
3571 | and methods, since the index will not contain any overload | |
3572 | information (but NAME might contain it). */ | |
3573 | if (stab->primary) | |
9291a0cd | 3574 | { |
da51c347 DE |
3575 | struct blockvector *bv = BLOCKVECTOR (stab); |
3576 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
156942c7 | 3577 | |
da51c347 DE |
3578 | sym = lookup_block_symbol (block, name, domain); |
3579 | } | |
1fd400ff | 3580 | |
da51c347 DE |
3581 | if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) |
3582 | { | |
3583 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
3584 | return stab; | |
3585 | ||
3586 | stab_best = stab; | |
9291a0cd | 3587 | } |
da51c347 DE |
3588 | |
3589 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3590 | } |
3591 | } | |
9291a0cd | 3592 | |
da51c347 | 3593 | return stab_best; |
9291a0cd TT |
3594 | } |
3595 | ||
3596 | static void | |
3597 | dw2_print_stats (struct objfile *objfile) | |
3598 | { | |
e4a48d9d | 3599 | int i, total, count; |
9291a0cd TT |
3600 | |
3601 | dw2_setup (objfile); | |
e4a48d9d | 3602 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3603 | count = 0; |
e4a48d9d | 3604 | for (i = 0; i < total; ++i) |
9291a0cd | 3605 | { |
e254ef6a | 3606 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3607 | |
e254ef6a | 3608 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
3609 | ++count; |
3610 | } | |
e4a48d9d | 3611 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3612 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3613 | } | |
3614 | ||
779bd270 DE |
3615 | /* This dumps minimal information about the index. |
3616 | It is called via "mt print objfiles". | |
3617 | One use is to verify .gdb_index has been loaded by the | |
3618 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3619 | ||
9291a0cd TT |
3620 | static void |
3621 | dw2_dump (struct objfile *objfile) | |
3622 | { | |
779bd270 DE |
3623 | dw2_setup (objfile); |
3624 | gdb_assert (dwarf2_per_objfile->using_index); | |
3625 | printf_filtered (".gdb_index:"); | |
3626 | if (dwarf2_per_objfile->index_table != NULL) | |
3627 | { | |
3628 | printf_filtered (" version %d\n", | |
3629 | dwarf2_per_objfile->index_table->version); | |
3630 | } | |
3631 | else | |
3632 | printf_filtered (" faked for \"readnow\"\n"); | |
3633 | printf_filtered ("\n"); | |
9291a0cd TT |
3634 | } |
3635 | ||
3636 | static void | |
3189cb12 DE |
3637 | dw2_relocate (struct objfile *objfile, |
3638 | const struct section_offsets *new_offsets, | |
3639 | const struct section_offsets *delta) | |
9291a0cd TT |
3640 | { |
3641 | /* There's nothing to relocate here. */ | |
3642 | } | |
3643 | ||
3644 | static void | |
3645 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3646 | const char *func_name) | |
3647 | { | |
da51c347 DE |
3648 | struct mapped_index *index; |
3649 | ||
3650 | dw2_setup (objfile); | |
3651 | ||
3652 | index = dwarf2_per_objfile->index_table; | |
3653 | ||
3654 | /* index is NULL if OBJF_READNOW. */ | |
3655 | if (index) | |
3656 | { | |
3657 | struct dw2_symtab_iterator iter; | |
3658 | struct dwarf2_per_cu_data *per_cu; | |
3659 | ||
3660 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3661 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3662 | func_name); | |
3663 | ||
3664 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3665 | dw2_instantiate_symtab (per_cu); | |
3666 | } | |
9291a0cd TT |
3667 | } |
3668 | ||
3669 | static void | |
3670 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3671 | { | |
3672 | int i; | |
3673 | ||
3674 | dw2_setup (objfile); | |
1fd400ff TT |
3675 | |
3676 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3677 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3678 | { |
e254ef6a | 3679 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3680 | |
a0f42c21 | 3681 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3682 | } |
3683 | } | |
3684 | ||
3685 | static void | |
652a8996 JK |
3686 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3687 | const char *fullname) | |
9291a0cd TT |
3688 | { |
3689 | int i; | |
3690 | ||
3691 | dw2_setup (objfile); | |
d4637a04 DE |
3692 | |
3693 | /* We don't need to consider type units here. | |
3694 | This is only called for examining code, e.g. expand_line_sal. | |
3695 | There can be an order of magnitude (or more) more type units | |
3696 | than comp units, and we avoid them if we can. */ | |
3697 | ||
3698 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3699 | { |
3700 | int j; | |
e254ef6a | 3701 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3702 | struct quick_file_names *file_data; |
9291a0cd | 3703 | |
3d7bb9d9 | 3704 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3705 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3706 | continue; |
3707 | ||
e4a48d9d | 3708 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3709 | if (file_data == NULL) |
9291a0cd TT |
3710 | continue; |
3711 | ||
7b9f3c50 | 3712 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3713 | { |
652a8996 JK |
3714 | const char *this_fullname = file_data->file_names[j]; |
3715 | ||
3716 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3717 | { |
a0f42c21 | 3718 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3719 | break; |
3720 | } | |
3721 | } | |
3722 | } | |
3723 | } | |
3724 | ||
9291a0cd | 3725 | static void |
ade7ed9e DE |
3726 | dw2_map_matching_symbols (struct objfile *objfile, |
3727 | const char * name, domain_enum namespace, | |
3728 | int global, | |
40658b94 PH |
3729 | int (*callback) (struct block *, |
3730 | struct symbol *, void *), | |
2edb89d3 JK |
3731 | void *data, symbol_compare_ftype *match, |
3732 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3733 | { |
40658b94 | 3734 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3735 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3736 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3737 | } |
3738 | ||
3739 | static void | |
f8eba3c6 TT |
3740 | dw2_expand_symtabs_matching |
3741 | (struct objfile *objfile, | |
fbd9ab74 | 3742 | int (*file_matcher) (const char *, void *, int basenames), |
e078317b | 3743 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
3744 | enum search_domain kind, |
3745 | void *data) | |
9291a0cd TT |
3746 | { |
3747 | int i; | |
3748 | offset_type iter; | |
4b5246aa | 3749 | struct mapped_index *index; |
9291a0cd TT |
3750 | |
3751 | dw2_setup (objfile); | |
ae2de4f8 DE |
3752 | |
3753 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3754 | if (!dwarf2_per_objfile->index_table) |
3755 | return; | |
4b5246aa | 3756 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3757 | |
7b08b9eb | 3758 | if (file_matcher != NULL) |
24c79950 TT |
3759 | { |
3760 | struct cleanup *cleanup; | |
3761 | htab_t visited_found, visited_not_found; | |
3762 | ||
3763 | visited_found = htab_create_alloc (10, | |
3764 | htab_hash_pointer, htab_eq_pointer, | |
3765 | NULL, xcalloc, xfree); | |
3766 | cleanup = make_cleanup_htab_delete (visited_found); | |
3767 | visited_not_found = htab_create_alloc (10, | |
3768 | htab_hash_pointer, htab_eq_pointer, | |
3769 | NULL, xcalloc, xfree); | |
3770 | make_cleanup_htab_delete (visited_not_found); | |
3771 | ||
848e3e78 DE |
3772 | /* The rule is CUs specify all the files, including those used by |
3773 | any TU, so there's no need to scan TUs here. */ | |
3774 | ||
3775 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3776 | { |
3777 | int j; | |
f4dc4d17 | 3778 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
24c79950 TT |
3779 | struct quick_file_names *file_data; |
3780 | void **slot; | |
7b08b9eb | 3781 | |
24c79950 | 3782 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3783 | |
24c79950 TT |
3784 | /* We only need to look at symtabs not already expanded. */ |
3785 | if (per_cu->v.quick->symtab) | |
3786 | continue; | |
7b08b9eb | 3787 | |
e4a48d9d | 3788 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3789 | if (file_data == NULL) |
3790 | continue; | |
7b08b9eb | 3791 | |
24c79950 TT |
3792 | if (htab_find (visited_not_found, file_data) != NULL) |
3793 | continue; | |
3794 | else if (htab_find (visited_found, file_data) != NULL) | |
3795 | { | |
3796 | per_cu->v.quick->mark = 1; | |
3797 | continue; | |
3798 | } | |
3799 | ||
3800 | for (j = 0; j < file_data->num_file_names; ++j) | |
3801 | { | |
da235a7c JK |
3802 | const char *this_real_name; |
3803 | ||
fbd9ab74 | 3804 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3805 | { |
3806 | per_cu->v.quick->mark = 1; | |
3807 | break; | |
3808 | } | |
da235a7c JK |
3809 | |
3810 | /* Before we invoke realpath, which can get expensive when many | |
3811 | files are involved, do a quick comparison of the basenames. */ | |
3812 | if (!basenames_may_differ | |
3813 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3814 | data, 1)) | |
3815 | continue; | |
3816 | ||
3817 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3818 | if (file_matcher (this_real_name, data, 0)) | |
3819 | { | |
3820 | per_cu->v.quick->mark = 1; | |
3821 | break; | |
3822 | } | |
24c79950 TT |
3823 | } |
3824 | ||
3825 | slot = htab_find_slot (per_cu->v.quick->mark | |
3826 | ? visited_found | |
3827 | : visited_not_found, | |
3828 | file_data, INSERT); | |
3829 | *slot = file_data; | |
3830 | } | |
3831 | ||
3832 | do_cleanups (cleanup); | |
3833 | } | |
9291a0cd | 3834 | |
3876f04e | 3835 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3836 | { |
3837 | offset_type idx = 2 * iter; | |
3838 | const char *name; | |
3839 | offset_type *vec, vec_len, vec_idx; | |
3840 | ||
3876f04e | 3841 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3842 | continue; |
3843 | ||
3876f04e | 3844 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3845 | |
e078317b | 3846 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
3847 | continue; |
3848 | ||
3849 | /* The name was matched, now expand corresponding CUs that were | |
3850 | marked. */ | |
4b5246aa | 3851 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3852 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3853 | vec_len = MAYBE_SWAP (vec[0]); |
3854 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3855 | { | |
e254ef6a | 3856 | struct dwarf2_per_cu_data *per_cu; |
156942c7 DE |
3857 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
3858 | gdb_index_symbol_kind symbol_kind = | |
3859 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3860 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 DE |
3861 | /* Only check the symbol attributes if they're present. |
3862 | Indices prior to version 7 don't record them, | |
3863 | and indices >= 7 may elide them for certain symbols | |
3864 | (gold does this). */ | |
3865 | int attrs_valid = | |
3866 | (index->version >= 7 | |
3867 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3868 | ||
3869 | /* Only check the symbol's kind if it has one. */ | |
3870 | if (attrs_valid) | |
156942c7 DE |
3871 | { |
3872 | switch (kind) | |
3873 | { | |
3874 | case VARIABLES_DOMAIN: | |
3875 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3876 | continue; | |
3877 | break; | |
3878 | case FUNCTIONS_DOMAIN: | |
3879 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3880 | continue; | |
3881 | break; | |
3882 | case TYPES_DOMAIN: | |
3883 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3884 | continue; | |
3885 | break; | |
3886 | default: | |
3887 | break; | |
3888 | } | |
3889 | } | |
3890 | ||
3190f0c6 DE |
3891 | /* Don't crash on bad data. */ |
3892 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3893 | + dwarf2_per_objfile->n_type_units)) | |
3894 | { | |
3895 | complaint (&symfile_complaints, | |
3896 | _(".gdb_index entry has bad CU index" | |
4262abfb | 3897 | " [in module %s]"), objfile_name (objfile)); |
3190f0c6 DE |
3898 | continue; |
3899 | } | |
3900 | ||
156942c7 | 3901 | per_cu = dw2_get_cu (cu_index); |
7b08b9eb | 3902 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 3903 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3904 | } |
3905 | } | |
3906 | } | |
3907 | ||
9703b513 TT |
3908 | /* A helper for dw2_find_pc_sect_symtab which finds the most specific |
3909 | symtab. */ | |
3910 | ||
3911 | static struct symtab * | |
3912 | recursively_find_pc_sect_symtab (struct symtab *symtab, CORE_ADDR pc) | |
3913 | { | |
3914 | int i; | |
3915 | ||
3916 | if (BLOCKVECTOR (symtab) != NULL | |
3917 | && blockvector_contains_pc (BLOCKVECTOR (symtab), pc)) | |
3918 | return symtab; | |
3919 | ||
a3ec0bb1 DE |
3920 | if (symtab->includes == NULL) |
3921 | return NULL; | |
3922 | ||
9703b513 TT |
3923 | for (i = 0; symtab->includes[i]; ++i) |
3924 | { | |
a3ec0bb1 | 3925 | struct symtab *s = symtab->includes[i]; |
9703b513 TT |
3926 | |
3927 | s = recursively_find_pc_sect_symtab (s, pc); | |
3928 | if (s != NULL) | |
3929 | return s; | |
3930 | } | |
3931 | ||
3932 | return NULL; | |
3933 | } | |
3934 | ||
9291a0cd TT |
3935 | static struct symtab * |
3936 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
3937 | struct minimal_symbol *msymbol, | |
3938 | CORE_ADDR pc, | |
3939 | struct obj_section *section, | |
3940 | int warn_if_readin) | |
3941 | { | |
3942 | struct dwarf2_per_cu_data *data; | |
9703b513 | 3943 | struct symtab *result; |
9291a0cd TT |
3944 | |
3945 | dw2_setup (objfile); | |
3946 | ||
3947 | if (!objfile->psymtabs_addrmap) | |
3948 | return NULL; | |
3949 | ||
3950 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3951 | if (!data) | |
3952 | return NULL; | |
3953 | ||
3954 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3955 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3956 | paddress (get_objfile_arch (objfile), pc)); |
3957 | ||
9703b513 TT |
3958 | result = recursively_find_pc_sect_symtab (dw2_instantiate_symtab (data), pc); |
3959 | gdb_assert (result != NULL); | |
3960 | return result; | |
9291a0cd TT |
3961 | } |
3962 | ||
9291a0cd | 3963 | static void |
44b13c5a | 3964 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 3965 | void *data, int need_fullname) |
9291a0cd TT |
3966 | { |
3967 | int i; | |
24c79950 TT |
3968 | struct cleanup *cleanup; |
3969 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
3970 | NULL, xcalloc, xfree); | |
9291a0cd | 3971 | |
24c79950 | 3972 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 3973 | dw2_setup (objfile); |
ae2de4f8 | 3974 | |
848e3e78 DE |
3975 | /* The rule is CUs specify all the files, including those used by |
3976 | any TU, so there's no need to scan TUs here. | |
3977 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 3978 | |
848e3e78 | 3979 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 TT |
3980 | { |
3981 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3982 | ||
3983 | if (per_cu->v.quick->symtab) | |
3984 | { | |
3985 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3986 | INSERT); | |
3987 | ||
3988 | *slot = per_cu->v.quick->file_names; | |
3989 | } | |
3990 | } | |
3991 | ||
848e3e78 | 3992 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3993 | { |
3994 | int j; | |
f4dc4d17 | 3995 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3996 | struct quick_file_names *file_data; |
24c79950 | 3997 | void **slot; |
9291a0cd | 3998 | |
3d7bb9d9 | 3999 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 4000 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
4001 | continue; |
4002 | ||
e4a48d9d | 4003 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4004 | if (file_data == NULL) |
9291a0cd TT |
4005 | continue; |
4006 | ||
24c79950 TT |
4007 | slot = htab_find_slot (visited, file_data, INSERT); |
4008 | if (*slot) | |
4009 | { | |
4010 | /* Already visited. */ | |
4011 | continue; | |
4012 | } | |
4013 | *slot = file_data; | |
4014 | ||
7b9f3c50 | 4015 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4016 | { |
74e2f255 DE |
4017 | const char *this_real_name; |
4018 | ||
4019 | if (need_fullname) | |
4020 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4021 | else | |
4022 | this_real_name = NULL; | |
7b9f3c50 | 4023 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
4024 | } |
4025 | } | |
24c79950 TT |
4026 | |
4027 | do_cleanups (cleanup); | |
9291a0cd TT |
4028 | } |
4029 | ||
4030 | static int | |
4031 | dw2_has_symbols (struct objfile *objfile) | |
4032 | { | |
4033 | return 1; | |
4034 | } | |
4035 | ||
4036 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4037 | { | |
4038 | dw2_has_symbols, | |
4039 | dw2_find_last_source_symtab, | |
4040 | dw2_forget_cached_source_info, | |
f8eba3c6 | 4041 | dw2_map_symtabs_matching_filename, |
9291a0cd | 4042 | dw2_lookup_symbol, |
9291a0cd TT |
4043 | dw2_print_stats, |
4044 | dw2_dump, | |
4045 | dw2_relocate, | |
4046 | dw2_expand_symtabs_for_function, | |
4047 | dw2_expand_all_symtabs, | |
652a8996 | 4048 | dw2_expand_symtabs_with_fullname, |
40658b94 | 4049 | dw2_map_matching_symbols, |
9291a0cd TT |
4050 | dw2_expand_symtabs_matching, |
4051 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
4052 | dw2_map_symbol_filenames |
4053 | }; | |
4054 | ||
4055 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
4056 | file will use psymtabs, or 1 if using the GNU index. */ | |
4057 | ||
4058 | int | |
4059 | dwarf2_initialize_objfile (struct objfile *objfile) | |
4060 | { | |
4061 | /* If we're about to read full symbols, don't bother with the | |
4062 | indices. In this case we also don't care if some other debug | |
4063 | format is making psymtabs, because they are all about to be | |
4064 | expanded anyway. */ | |
4065 | if ((objfile->flags & OBJF_READNOW)) | |
4066 | { | |
4067 | int i; | |
4068 | ||
4069 | dwarf2_per_objfile->using_index = 1; | |
4070 | create_all_comp_units (objfile); | |
0e50663e | 4071 | create_all_type_units (objfile); |
7b9f3c50 DE |
4072 | dwarf2_per_objfile->quick_file_names_table = |
4073 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 4074 | |
1fd400ff | 4075 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 4076 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4077 | { |
e254ef6a | 4078 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 4079 | |
e254ef6a DE |
4080 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
4081 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
4082 | } |
4083 | ||
4084 | /* Return 1 so that gdb sees the "quick" functions. However, | |
4085 | these functions will be no-ops because we will have expanded | |
4086 | all symtabs. */ | |
4087 | return 1; | |
4088 | } | |
4089 | ||
4090 | if (dwarf2_read_index (objfile)) | |
4091 | return 1; | |
4092 | ||
9291a0cd TT |
4093 | return 0; |
4094 | } | |
4095 | ||
4096 | \f | |
4097 | ||
dce234bc PP |
4098 | /* Build a partial symbol table. */ |
4099 | ||
4100 | void | |
f29dff0a | 4101 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 4102 | { |
c9bf0622 TT |
4103 | volatile struct gdb_exception except; |
4104 | ||
f29dff0a | 4105 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
4106 | { |
4107 | init_psymbol_list (objfile, 1024); | |
4108 | } | |
4109 | ||
c9bf0622 TT |
4110 | TRY_CATCH (except, RETURN_MASK_ERROR) |
4111 | { | |
4112 | /* This isn't really ideal: all the data we allocate on the | |
4113 | objfile's obstack is still uselessly kept around. However, | |
4114 | freeing it seems unsafe. */ | |
4115 | struct cleanup *cleanups = make_cleanup_discard_psymtabs (objfile); | |
4116 | ||
4117 | dwarf2_build_psymtabs_hard (objfile); | |
4118 | discard_cleanups (cleanups); | |
4119 | } | |
4120 | if (except.reason < 0) | |
4121 | exception_print (gdb_stderr, except); | |
c906108c | 4122 | } |
c906108c | 4123 | |
1ce1cefd DE |
4124 | /* Return the total length of the CU described by HEADER. */ |
4125 | ||
4126 | static unsigned int | |
4127 | get_cu_length (const struct comp_unit_head *header) | |
4128 | { | |
4129 | return header->initial_length_size + header->length; | |
4130 | } | |
4131 | ||
45452591 DE |
4132 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
4133 | ||
4134 | static inline int | |
b64f50a1 | 4135 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 4136 | { |
b64f50a1 | 4137 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 4138 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 4139 | |
b64f50a1 | 4140 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
4141 | } |
4142 | ||
3b80fe9b DE |
4143 | /* Find the base address of the compilation unit for range lists and |
4144 | location lists. It will normally be specified by DW_AT_low_pc. | |
4145 | In DWARF-3 draft 4, the base address could be overridden by | |
4146 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
4147 | compilation units with discontinuous ranges. */ | |
4148 | ||
4149 | static void | |
4150 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
4151 | { | |
4152 | struct attribute *attr; | |
4153 | ||
4154 | cu->base_known = 0; | |
4155 | cu->base_address = 0; | |
4156 | ||
4157 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
4158 | if (attr) | |
4159 | { | |
4160 | cu->base_address = DW_ADDR (attr); | |
4161 | cu->base_known = 1; | |
4162 | } | |
4163 | else | |
4164 | { | |
4165 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4166 | if (attr) | |
4167 | { | |
4168 | cu->base_address = DW_ADDR (attr); | |
4169 | cu->base_known = 1; | |
4170 | } | |
4171 | } | |
4172 | } | |
4173 | ||
93311388 DE |
4174 | /* Read in the comp unit header information from the debug_info at info_ptr. |
4175 | NOTE: This leaves members offset, first_die_offset to be filled in | |
4176 | by the caller. */ | |
107d2387 | 4177 | |
d521ce57 | 4178 | static const gdb_byte * |
107d2387 | 4179 | read_comp_unit_head (struct comp_unit_head *cu_header, |
d521ce57 | 4180 | const gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
4181 | { |
4182 | int signed_addr; | |
891d2f0b | 4183 | unsigned int bytes_read; |
c764a876 DE |
4184 | |
4185 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
4186 | cu_header->initial_length_size = bytes_read; | |
4187 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 4188 | info_ptr += bytes_read; |
107d2387 AC |
4189 | cu_header->version = read_2_bytes (abfd, info_ptr); |
4190 | info_ptr += 2; | |
b64f50a1 JK |
4191 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
4192 | &bytes_read); | |
613e1657 | 4193 | info_ptr += bytes_read; |
107d2387 AC |
4194 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
4195 | info_ptr += 1; | |
4196 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
4197 | if (signed_addr < 0) | |
8e65ff28 | 4198 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4199 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 4200 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 4201 | |
107d2387 AC |
4202 | return info_ptr; |
4203 | } | |
4204 | ||
36586728 TT |
4205 | /* Helper function that returns the proper abbrev section for |
4206 | THIS_CU. */ | |
4207 | ||
4208 | static struct dwarf2_section_info * | |
4209 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
4210 | { | |
4211 | struct dwarf2_section_info *abbrev; | |
4212 | ||
4213 | if (this_cu->is_dwz) | |
4214 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
4215 | else | |
4216 | abbrev = &dwarf2_per_objfile->abbrev; | |
4217 | ||
4218 | return abbrev; | |
4219 | } | |
4220 | ||
9ff913ba DE |
4221 | /* Subroutine of read_and_check_comp_unit_head and |
4222 | read_and_check_type_unit_head to simplify them. | |
4223 | Perform various error checking on the header. */ | |
4224 | ||
4225 | static void | |
4226 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
4227 | struct dwarf2_section_info *section, |
4228 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 4229 | { |
a32a8923 DE |
4230 | bfd *abfd = get_section_bfd_owner (section); |
4231 | const char *filename = get_section_file_name (section); | |
9ff913ba DE |
4232 | |
4233 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
4234 | error (_("Dwarf Error: wrong version in compilation unit header " | |
4235 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
4236 | filename); | |
4237 | ||
b64f50a1 | 4238 | if (header->abbrev_offset.sect_off |
36586728 | 4239 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
4240 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
4241 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 4242 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
4243 | filename); |
4244 | ||
4245 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
4246 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4247 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4248 | > section->size) |
4249 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4250 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4251 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4252 | filename); |
4253 | } | |
4254 | ||
4255 | /* Read in a CU/TU header and perform some basic error checking. | |
4256 | The contents of the header are stored in HEADER. | |
4257 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4258 | |
d521ce57 | 4259 | static const gdb_byte * |
9ff913ba DE |
4260 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4261 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4262 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4263 | const gdb_byte *info_ptr, |
9ff913ba | 4264 | int is_debug_types_section) |
72bf9492 | 4265 | { |
d521ce57 | 4266 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4267 | bfd *abfd = get_section_bfd_owner (section); |
72bf9492 | 4268 | |
b64f50a1 | 4269 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4270 | |
72bf9492 DJ |
4271 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
4272 | ||
460c1c54 CC |
4273 | /* If we're reading a type unit, skip over the signature and |
4274 | type_offset fields. */ | |
b0df02fd | 4275 | if (is_debug_types_section) |
460c1c54 CC |
4276 | info_ptr += 8 /*signature*/ + header->offset_size; |
4277 | ||
b64f50a1 | 4278 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 4279 | |
4bdcc0c1 | 4280 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
4281 | |
4282 | return info_ptr; | |
4283 | } | |
4284 | ||
348e048f DE |
4285 | /* Read in the types comp unit header information from .debug_types entry at |
4286 | types_ptr. The result is a pointer to one past the end of the header. */ | |
4287 | ||
d521ce57 | 4288 | static const gdb_byte * |
9ff913ba DE |
4289 | read_and_check_type_unit_head (struct comp_unit_head *header, |
4290 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4291 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4292 | const gdb_byte *info_ptr, |
dee91e82 DE |
4293 | ULONGEST *signature, |
4294 | cu_offset *type_offset_in_tu) | |
348e048f | 4295 | { |
d521ce57 | 4296 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4297 | bfd *abfd = get_section_bfd_owner (section); |
348e048f | 4298 | |
b64f50a1 | 4299 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 4300 | |
9ff913ba | 4301 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 4302 | |
9ff913ba DE |
4303 | /* If we're reading a type unit, skip over the signature and |
4304 | type_offset fields. */ | |
4305 | if (signature != NULL) | |
4306 | *signature = read_8_bytes (abfd, info_ptr); | |
4307 | info_ptr += 8; | |
dee91e82 DE |
4308 | if (type_offset_in_tu != NULL) |
4309 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
4310 | header->offset_size); | |
9ff913ba DE |
4311 | info_ptr += header->offset_size; |
4312 | ||
b64f50a1 | 4313 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4314 | |
4bdcc0c1 | 4315 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4316 | |
4317 | return info_ptr; | |
348e048f DE |
4318 | } |
4319 | ||
f4dc4d17 DE |
4320 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4321 | ||
4322 | static sect_offset | |
4323 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4324 | sect_offset offset) | |
4325 | { | |
a32a8923 | 4326 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 4327 | const gdb_byte *info_ptr; |
f4dc4d17 DE |
4328 | unsigned int length, initial_length_size, offset_size; |
4329 | sect_offset abbrev_offset; | |
4330 | ||
4331 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4332 | info_ptr = section->buffer + offset.sect_off; | |
4333 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
4334 | offset_size = initial_length_size == 4 ? 4 : 8; | |
4335 | info_ptr += initial_length_size + 2 /*version*/; | |
4336 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
4337 | return abbrev_offset; | |
4338 | } | |
4339 | ||
aaa75496 JB |
4340 | /* Allocate a new partial symtab for file named NAME and mark this new |
4341 | partial symtab as being an include of PST. */ | |
4342 | ||
4343 | static void | |
d521ce57 | 4344 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
4345 | struct objfile *objfile) |
4346 | { | |
4347 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4348 | ||
fbd9ab74 JK |
4349 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4350 | { | |
4351 | /* It shares objfile->objfile_obstack. */ | |
4352 | subpst->dirname = pst->dirname; | |
4353 | } | |
4354 | ||
aaa75496 JB |
4355 | subpst->section_offsets = pst->section_offsets; |
4356 | subpst->textlow = 0; | |
4357 | subpst->texthigh = 0; | |
4358 | ||
4359 | subpst->dependencies = (struct partial_symtab **) | |
4360 | obstack_alloc (&objfile->objfile_obstack, | |
4361 | sizeof (struct partial_symtab *)); | |
4362 | subpst->dependencies[0] = pst; | |
4363 | subpst->number_of_dependencies = 1; | |
4364 | ||
4365 | subpst->globals_offset = 0; | |
4366 | subpst->n_global_syms = 0; | |
4367 | subpst->statics_offset = 0; | |
4368 | subpst->n_static_syms = 0; | |
4369 | subpst->symtab = NULL; | |
4370 | subpst->read_symtab = pst->read_symtab; | |
4371 | subpst->readin = 0; | |
4372 | ||
4373 | /* No private part is necessary for include psymtabs. This property | |
4374 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4375 | the regular ones. */ |
58a9656e | 4376 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4377 | } |
4378 | ||
4379 | /* Read the Line Number Program data and extract the list of files | |
4380 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4381 | partial symtab for each of these included files. */ |
aaa75496 JB |
4382 | |
4383 | static void | |
4384 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4385 | struct die_info *die, |
4386 | struct partial_symtab *pst) | |
aaa75496 | 4387 | { |
d85a05f0 DJ |
4388 | struct line_header *lh = NULL; |
4389 | struct attribute *attr; | |
aaa75496 | 4390 | |
d85a05f0 DJ |
4391 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4392 | if (attr) | |
3019eac3 | 4393 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4394 | if (lh == NULL) |
4395 | return; /* No linetable, so no includes. */ | |
4396 | ||
c6da4cef | 4397 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 4398 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
4399 | |
4400 | free_line_header (lh); | |
4401 | } | |
4402 | ||
348e048f | 4403 | static hashval_t |
52dc124a | 4404 | hash_signatured_type (const void *item) |
348e048f | 4405 | { |
52dc124a | 4406 | const struct signatured_type *sig_type = item; |
9a619af0 | 4407 | |
348e048f | 4408 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4409 | return sig_type->signature; |
348e048f DE |
4410 | } |
4411 | ||
4412 | static int | |
52dc124a | 4413 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
4414 | { |
4415 | const struct signatured_type *lhs = item_lhs; | |
4416 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4417 | |
348e048f DE |
4418 | return lhs->signature == rhs->signature; |
4419 | } | |
4420 | ||
1fd400ff TT |
4421 | /* Allocate a hash table for signatured types. */ |
4422 | ||
4423 | static htab_t | |
673bfd45 | 4424 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4425 | { |
4426 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4427 | hash_signatured_type, |
4428 | eq_signatured_type, | |
1fd400ff TT |
4429 | NULL, |
4430 | &objfile->objfile_obstack, | |
4431 | hashtab_obstack_allocate, | |
4432 | dummy_obstack_deallocate); | |
4433 | } | |
4434 | ||
d467dd73 | 4435 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4436 | |
4437 | static int | |
d467dd73 | 4438 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4439 | { |
4440 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4441 | struct signatured_type ***datap = datum; |
1fd400ff | 4442 | |
b4dd5633 | 4443 | **datap = sigt; |
1fd400ff TT |
4444 | ++*datap; |
4445 | ||
4446 | return 1; | |
4447 | } | |
4448 | ||
c88ee1f0 DE |
4449 | /* Create the hash table of all entries in the .debug_types |
4450 | (or .debug_types.dwo) section(s). | |
4451 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4452 | otherwise it is NULL. | |
4453 | ||
4454 | The result is a pointer to the hash table or NULL if there are no types. | |
4455 | ||
4456 | Note: This function processes DWO files only, not DWP files. */ | |
348e048f | 4457 | |
3019eac3 DE |
4458 | static htab_t |
4459 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4460 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4461 | { |
3019eac3 | 4462 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4463 | htab_t types_htab = NULL; |
8b70b953 TT |
4464 | int ix; |
4465 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4466 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4467 | |
3019eac3 DE |
4468 | if (VEC_empty (dwarf2_section_info_def, types)) |
4469 | return NULL; | |
348e048f | 4470 | |
4bdcc0c1 DE |
4471 | abbrev_section = (dwo_file != NULL |
4472 | ? &dwo_file->sections.abbrev | |
4473 | : &dwarf2_per_objfile->abbrev); | |
4474 | ||
09406207 DE |
4475 | if (dwarf2_read_debug) |
4476 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
4477 | dwo_file ? ".dwo" : "", | |
a32a8923 | 4478 | get_section_file_name (abbrev_section)); |
09406207 | 4479 | |
8b70b953 | 4480 | for (ix = 0; |
3019eac3 | 4481 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4482 | ++ix) |
4483 | { | |
3019eac3 | 4484 | bfd *abfd; |
d521ce57 | 4485 | const gdb_byte *info_ptr, *end_ptr; |
348e048f | 4486 | |
8b70b953 TT |
4487 | dwarf2_read_section (objfile, section); |
4488 | info_ptr = section->buffer; | |
348e048f | 4489 | |
8b70b953 TT |
4490 | if (info_ptr == NULL) |
4491 | continue; | |
348e048f | 4492 | |
3019eac3 | 4493 | /* We can't set abfd until now because the section may be empty or |
a32a8923 DE |
4494 | not present, in which case the bfd is unknown. */ |
4495 | abfd = get_section_bfd_owner (section); | |
3019eac3 | 4496 | |
dee91e82 DE |
4497 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4498 | because we don't need to read any dies: the signature is in the | |
4499 | header. */ | |
8b70b953 TT |
4500 | |
4501 | end_ptr = info_ptr + section->size; | |
4502 | while (info_ptr < end_ptr) | |
4503 | { | |
b64f50a1 | 4504 | sect_offset offset; |
3019eac3 | 4505 | cu_offset type_offset_in_tu; |
8b70b953 | 4506 | ULONGEST signature; |
52dc124a | 4507 | struct signatured_type *sig_type; |
3019eac3 | 4508 | struct dwo_unit *dwo_tu; |
8b70b953 | 4509 | void **slot; |
d521ce57 | 4510 | const gdb_byte *ptr = info_ptr; |
9ff913ba | 4511 | struct comp_unit_head header; |
dee91e82 | 4512 | unsigned int length; |
348e048f | 4513 | |
b64f50a1 | 4514 | offset.sect_off = ptr - section->buffer; |
348e048f | 4515 | |
8b70b953 | 4516 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4517 | table, but we don't need anything else just yet. */ |
348e048f | 4518 | |
4bdcc0c1 DE |
4519 | ptr = read_and_check_type_unit_head (&header, section, |
4520 | abbrev_section, ptr, | |
3019eac3 | 4521 | &signature, &type_offset_in_tu); |
6caca83c | 4522 | |
1ce1cefd | 4523 | length = get_cu_length (&header); |
dee91e82 | 4524 | |
6caca83c | 4525 | /* Skip dummy type units. */ |
dee91e82 DE |
4526 | if (ptr >= info_ptr + length |
4527 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4528 | { |
1ce1cefd | 4529 | info_ptr += length; |
6caca83c CC |
4530 | continue; |
4531 | } | |
8b70b953 | 4532 | |
0349ea22 DE |
4533 | if (types_htab == NULL) |
4534 | { | |
4535 | if (dwo_file) | |
4536 | types_htab = allocate_dwo_unit_table (objfile); | |
4537 | else | |
4538 | types_htab = allocate_signatured_type_table (objfile); | |
4539 | } | |
4540 | ||
3019eac3 DE |
4541 | if (dwo_file) |
4542 | { | |
4543 | sig_type = NULL; | |
4544 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4545 | struct dwo_unit); | |
4546 | dwo_tu->dwo_file = dwo_file; | |
4547 | dwo_tu->signature = signature; | |
4548 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
8a0459fd | 4549 | dwo_tu->section = section; |
3019eac3 DE |
4550 | dwo_tu->offset = offset; |
4551 | dwo_tu->length = length; | |
4552 | } | |
4553 | else | |
4554 | { | |
4555 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4556 | The real type_offset is in the DWO file. */ | |
4557 | dwo_tu = NULL; | |
4558 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4559 | struct signatured_type); | |
4560 | sig_type->signature = signature; | |
4561 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4562 | sig_type->per_cu.objfile = objfile; | |
4563 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 4564 | sig_type->per_cu.section = section; |
3019eac3 DE |
4565 | sig_type->per_cu.offset = offset; |
4566 | sig_type->per_cu.length = length; | |
4567 | } | |
8b70b953 | 4568 | |
3019eac3 DE |
4569 | slot = htab_find_slot (types_htab, |
4570 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4571 | INSERT); | |
8b70b953 TT |
4572 | gdb_assert (slot != NULL); |
4573 | if (*slot != NULL) | |
4574 | { | |
3019eac3 DE |
4575 | sect_offset dup_offset; |
4576 | ||
4577 | if (dwo_file) | |
4578 | { | |
4579 | const struct dwo_unit *dup_tu = *slot; | |
4580 | ||
4581 | dup_offset = dup_tu->offset; | |
4582 | } | |
4583 | else | |
4584 | { | |
4585 | const struct signatured_type *dup_tu = *slot; | |
4586 | ||
4587 | dup_offset = dup_tu->per_cu.offset; | |
4588 | } | |
b3c8eb43 | 4589 | |
8b70b953 | 4590 | complaint (&symfile_complaints, |
c88ee1f0 | 4591 | _("debug type entry at offset 0x%x is duplicate to" |
4031ecc5 | 4592 | " the entry at offset 0x%x, signature %s"), |
3019eac3 | 4593 | offset.sect_off, dup_offset.sect_off, |
4031ecc5 | 4594 | hex_string (signature)); |
8b70b953 | 4595 | } |
3019eac3 | 4596 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4597 | |
09406207 | 4598 | if (dwarf2_read_debug) |
4031ecc5 | 4599 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", |
b64f50a1 | 4600 | offset.sect_off, |
4031ecc5 | 4601 | hex_string (signature)); |
348e048f | 4602 | |
dee91e82 | 4603 | info_ptr += length; |
8b70b953 | 4604 | } |
348e048f DE |
4605 | } |
4606 | ||
3019eac3 DE |
4607 | return types_htab; |
4608 | } | |
4609 | ||
4610 | /* Create the hash table of all entries in the .debug_types section, | |
4611 | and initialize all_type_units. | |
4612 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4613 | otherwise non-zero. */ | |
4614 | ||
4615 | static int | |
4616 | create_all_type_units (struct objfile *objfile) | |
4617 | { | |
4618 | htab_t types_htab; | |
b4dd5633 | 4619 | struct signatured_type **iter; |
3019eac3 DE |
4620 | |
4621 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4622 | if (types_htab == NULL) | |
4623 | { | |
4624 | dwarf2_per_objfile->signatured_types = NULL; | |
4625 | return 0; | |
4626 | } | |
4627 | ||
348e048f DE |
4628 | dwarf2_per_objfile->signatured_types = types_htab; |
4629 | ||
d467dd73 DE |
4630 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
4631 | dwarf2_per_objfile->all_type_units | |
a2ce51a0 DE |
4632 | = xmalloc (dwarf2_per_objfile->n_type_units |
4633 | * sizeof (struct signatured_type *)); | |
d467dd73 DE |
4634 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4635 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4636 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4637 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4638 | |
348e048f DE |
4639 | return 1; |
4640 | } | |
4641 | ||
a2ce51a0 DE |
4642 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
4643 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
4644 | ||
4645 | static void | |
4646 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
4647 | struct signatured_type *sig_entry, | |
4648 | struct dwo_unit *dwo_entry) | |
4649 | { | |
7ee85ab1 | 4650 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
4651 | gdb_assert (! sig_entry->per_cu.queued); |
4652 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
4653 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
4654 | gdb_assert (sig_entry->per_cu.v.quick->symtab == NULL); | |
4655 | gdb_assert (sig_entry->signature == dwo_entry->signature); | |
4656 | gdb_assert (sig_entry->type_offset_in_section.sect_off == 0); | |
4657 | gdb_assert (sig_entry->type_unit_group == NULL); | |
7ee85ab1 DE |
4658 | gdb_assert (sig_entry->dwo_unit == NULL); |
4659 | ||
4660 | sig_entry->per_cu.section = dwo_entry->section; | |
4661 | sig_entry->per_cu.offset = dwo_entry->offset; | |
4662 | sig_entry->per_cu.length = dwo_entry->length; | |
4663 | sig_entry->per_cu.reading_dwo_directly = 1; | |
4664 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
4665 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
4666 | sig_entry->dwo_unit = dwo_entry; | |
4667 | } | |
4668 | ||
4669 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
4670 | If we haven't read the TU yet, create the signatured_type data structure |
4671 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
4672 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
4673 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
4674 | containing that CU. Otherwise we could end up reading several other DWO | |
4675 | files (due to comdat folding) to process the transitive closure of all the | |
4676 | mentioned TUs, and that can be slow. The current DWO file will have every | |
4677 | type signature that it needs. | |
a2ce51a0 DE |
4678 | We only do this for .gdb_index because in the psymtab case we already have |
4679 | to read all the DWOs to build the type unit groups. */ | |
4680 | ||
4681 | static struct signatured_type * | |
4682 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4683 | { | |
4684 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4685 | struct dwo_file *dwo_file; | |
4686 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
4687 | struct signatured_type find_sig_entry, *sig_entry; | |
4688 | ||
4689 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4690 | ||
4691 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the | |
4692 | dwo_unit of the TU itself. */ | |
4693 | dwo_file = cu->dwo_unit->dwo_file; | |
4694 | ||
4695 | /* We only ever need to read in one copy of a signatured type. | |
4696 | Just use the global signatured_types array. If this is the first time | |
4697 | we're reading this type, replace the recorded data from .gdb_index with | |
4698 | this TU. */ | |
4699 | ||
4700 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4701 | return NULL; | |
4702 | find_sig_entry.signature = sig; | |
4703 | sig_entry = htab_find (dwarf2_per_objfile->signatured_types, &find_sig_entry); | |
4704 | if (sig_entry == NULL) | |
4705 | return NULL; | |
7ee85ab1 DE |
4706 | |
4707 | /* We can get here with the TU already read, *or* in the process of being | |
4708 | read. Don't reassign it if that's the case. Also note that if the TU is | |
4709 | already being read, it may not have come from a DWO, the program may be | |
4710 | a mix of Fission-compiled code and non-Fission-compiled code. */ | |
a2ce51a0 | 4711 | /* Have we already tried to read this TU? */ |
7ee85ab1 | 4712 | if (sig_entry->per_cu.tu_read) |
a2ce51a0 DE |
4713 | return sig_entry; |
4714 | ||
4715 | /* Ok, this is the first time we're reading this TU. */ | |
4716 | if (dwo_file->tus == NULL) | |
4717 | return NULL; | |
4718 | find_dwo_entry.signature = sig; | |
4719 | dwo_entry = htab_find (dwo_file->tus, &find_dwo_entry); | |
4720 | if (dwo_entry == NULL) | |
4721 | return NULL; | |
4722 | ||
4723 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); | |
89e63ee4 | 4724 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
4725 | return sig_entry; |
4726 | } | |
4727 | ||
4728 | /* Subroutine of lookup_dwp_signatured_type. | |
4729 | Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. */ | |
4730 | ||
4731 | static struct signatured_type * | |
4732 | add_type_unit (ULONGEST sig) | |
4733 | { | |
4734 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4735 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
4736 | struct signatured_type *sig_type; | |
4737 | void **slot; | |
4738 | ||
4739 | ++n_type_units; | |
4740 | dwarf2_per_objfile->all_type_units = | |
4741 | xrealloc (dwarf2_per_objfile->all_type_units, | |
4742 | n_type_units * sizeof (struct signatured_type *)); | |
4743 | dwarf2_per_objfile->n_type_units = n_type_units; | |
4744 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4745 | struct signatured_type); | |
4746 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
4747 | sig_type->signature = sig; | |
4748 | sig_type->per_cu.is_debug_types = 1; | |
4749 | sig_type->per_cu.v.quick = | |
4750 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4751 | struct dwarf2_per_cu_quick_data); | |
4752 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4753 | sig_type, INSERT); | |
4754 | gdb_assert (*slot == NULL); | |
4755 | *slot = sig_type; | |
4756 | /* The rest of sig_type must be filled in by the caller. */ | |
4757 | return sig_type; | |
4758 | } | |
4759 | ||
4760 | /* Subroutine of lookup_signatured_type. | |
4761 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
4762 | then try the DWP file. | |
4763 | Normally this "can't happen", but if there's a bug in signature | |
4764 | generation and/or the DWP file is built incorrectly, it can happen. | |
4765 | Using the type directly from the DWP file means we don't have the stub | |
4766 | which has some useful attributes (e.g., DW_AT_comp_dir), but they're | |
4767 | not critical. [Eventually the stub may go away for type units anyway.] */ | |
4768 | ||
4769 | static struct signatured_type * | |
4770 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4771 | { | |
4772 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4773 | struct dwp_file *dwp_file = get_dwp_file (); | |
4774 | struct dwo_unit *dwo_entry; | |
4775 | struct signatured_type find_sig_entry, *sig_entry; | |
4776 | ||
4777 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4778 | gdb_assert (dwp_file != NULL); | |
4779 | ||
4780 | if (dwarf2_per_objfile->signatured_types != NULL) | |
4781 | { | |
4782 | find_sig_entry.signature = sig; | |
4783 | sig_entry = htab_find (dwarf2_per_objfile->signatured_types, | |
4784 | &find_sig_entry); | |
4785 | if (sig_entry != NULL) | |
4786 | return sig_entry; | |
4787 | } | |
4788 | ||
4789 | /* This is the "shouldn't happen" case. | |
4790 | Try the DWP file and hope for the best. */ | |
4791 | if (dwp_file->tus == NULL) | |
4792 | return NULL; | |
57d63ce2 DE |
4793 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
4794 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
4795 | if (dwo_entry == NULL) |
4796 | return NULL; | |
4797 | ||
4798 | sig_entry = add_type_unit (sig); | |
4799 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); | |
4800 | ||
4801 | /* The caller will signal a complaint if we return NULL. | |
4802 | Here we don't return NULL but we still want to complain. */ | |
4803 | complaint (&symfile_complaints, | |
4804 | _("Bad type signature %s referenced by %s at 0x%x," | |
4805 | " coping by using copy in DWP [in module %s]"), | |
4806 | hex_string (sig), | |
4807 | cu->per_cu->is_debug_types ? "TU" : "CU", | |
4808 | cu->per_cu->offset.sect_off, | |
4262abfb | 4809 | objfile_name (objfile)); |
a2ce51a0 DE |
4810 | |
4811 | return sig_entry; | |
4812 | } | |
4813 | ||
380bca97 | 4814 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
4815 | Returns NULL if signature SIG is not present in the table. |
4816 | It is up to the caller to complain about this. */ | |
348e048f DE |
4817 | |
4818 | static struct signatured_type * | |
a2ce51a0 | 4819 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 4820 | { |
a2ce51a0 DE |
4821 | if (cu->dwo_unit |
4822 | && dwarf2_per_objfile->using_index) | |
4823 | { | |
4824 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
4825 | These cases require special processing. */ | |
4826 | if (get_dwp_file () == NULL) | |
4827 | return lookup_dwo_signatured_type (cu, sig); | |
4828 | else | |
4829 | return lookup_dwp_signatured_type (cu, sig); | |
4830 | } | |
4831 | else | |
4832 | { | |
4833 | struct signatured_type find_entry, *entry; | |
348e048f | 4834 | |
a2ce51a0 DE |
4835 | if (dwarf2_per_objfile->signatured_types == NULL) |
4836 | return NULL; | |
4837 | find_entry.signature = sig; | |
4838 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
4839 | return entry; | |
4840 | } | |
348e048f | 4841 | } |
42e7ad6c DE |
4842 | \f |
4843 | /* Low level DIE reading support. */ | |
348e048f | 4844 | |
d85a05f0 DJ |
4845 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
4846 | ||
4847 | static void | |
4848 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 4849 | struct dwarf2_cu *cu, |
3019eac3 DE |
4850 | struct dwarf2_section_info *section, |
4851 | struct dwo_file *dwo_file) | |
d85a05f0 | 4852 | { |
fceca515 | 4853 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 4854 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 4855 | reader->cu = cu; |
3019eac3 | 4856 | reader->dwo_file = dwo_file; |
dee91e82 DE |
4857 | reader->die_section = section; |
4858 | reader->buffer = section->buffer; | |
f664829e | 4859 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 4860 | reader->comp_dir = NULL; |
d85a05f0 DJ |
4861 | } |
4862 | ||
b0c7bfa9 DE |
4863 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
4864 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
4865 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
4866 | already. | |
4867 | ||
4868 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
4869 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
4870 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
4871 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
4872 | attribute of the referencing CU. Exactly one of STUB_COMP_UNIT_DIE and | |
4873 | COMP_DIR must be non-NULL. | |
b0c7bfa9 DE |
4874 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
4875 | are filled in with the info of the DIE from the DWO file. | |
4876 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
4877 | provided an abbrev table to use. | |
4878 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
4879 | ||
4880 | static int | |
4881 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
4882 | struct dwo_unit *dwo_unit, | |
4883 | int abbrev_table_provided, | |
4884 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 4885 | const char *stub_comp_dir, |
b0c7bfa9 | 4886 | struct die_reader_specs *result_reader, |
d521ce57 | 4887 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
4888 | struct die_info **result_comp_unit_die, |
4889 | int *result_has_children) | |
4890 | { | |
4891 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4892 | struct dwarf2_cu *cu = this_cu->cu; | |
4893 | struct dwarf2_section_info *section; | |
4894 | bfd *abfd; | |
d521ce57 | 4895 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
4896 | const char *comp_dir_string; |
4897 | ULONGEST signature; /* Or dwo_id. */ | |
4898 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
4899 | int i,num_extra_attrs; | |
4900 | struct dwarf2_section_info *dwo_abbrev_section; | |
4901 | struct attribute *attr; | |
a2ce51a0 | 4902 | struct attribute comp_dir_attr; |
b0c7bfa9 DE |
4903 | struct die_info *comp_unit_die; |
4904 | ||
a2ce51a0 DE |
4905 | /* Both can't be provided. */ |
4906 | gdb_assert (! (stub_comp_unit_die && stub_comp_dir)); | |
4907 | ||
b0c7bfa9 DE |
4908 | /* These attributes aren't processed until later: |
4909 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
4910 | However, the attribute is found in the stub which we won't have later. | |
4911 | In order to not impose this complication on the rest of the code, | |
4912 | we read them here and copy them to the DWO CU/TU die. */ | |
4913 | ||
4914 | stmt_list = NULL; | |
4915 | low_pc = NULL; | |
4916 | high_pc = NULL; | |
4917 | ranges = NULL; | |
4918 | comp_dir = NULL; | |
4919 | ||
4920 | if (stub_comp_unit_die != NULL) | |
4921 | { | |
4922 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
4923 | DWO file. */ | |
4924 | if (! this_cu->is_debug_types) | |
4925 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
4926 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
4927 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
4928 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
4929 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
4930 | ||
4931 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
4932 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
4933 | cu->addr_base = 0; | |
4934 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
4935 | if (attr) | |
4936 | cu->addr_base = DW_UNSND (attr); | |
4937 | ||
4938 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
4939 | We need the value before we can process DW_AT_ranges. */ | |
4940 | cu->ranges_base = 0; | |
4941 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
4942 | if (attr) | |
4943 | cu->ranges_base = DW_UNSND (attr); | |
4944 | } | |
a2ce51a0 DE |
4945 | else if (stub_comp_dir != NULL) |
4946 | { | |
4947 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
4948 | comp_dir = (struct attribute *) | |
4949 | obstack_alloc (&cu->comp_unit_obstack, sizeof (*comp_dir)); | |
4950 | comp_dir->name = DW_AT_comp_dir; | |
4951 | comp_dir->form = DW_FORM_string; | |
4952 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
4953 | DW_STRING (comp_dir) = stub_comp_dir; | |
4954 | } | |
b0c7bfa9 DE |
4955 | |
4956 | /* Set up for reading the DWO CU/TU. */ | |
4957 | cu->dwo_unit = dwo_unit; | |
4958 | section = dwo_unit->section; | |
4959 | dwarf2_read_section (objfile, section); | |
a32a8923 | 4960 | abfd = get_section_bfd_owner (section); |
b0c7bfa9 DE |
4961 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
4962 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; | |
4963 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
4964 | ||
4965 | if (this_cu->is_debug_types) | |
4966 | { | |
4967 | ULONGEST header_signature; | |
4968 | cu_offset type_offset_in_tu; | |
4969 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; | |
4970 | ||
4971 | info_ptr = read_and_check_type_unit_head (&cu->header, section, | |
4972 | dwo_abbrev_section, | |
4973 | info_ptr, | |
4974 | &header_signature, | |
4975 | &type_offset_in_tu); | |
a2ce51a0 DE |
4976 | /* This is not an assert because it can be caused by bad debug info. */ |
4977 | if (sig_type->signature != header_signature) | |
4978 | { | |
4979 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
4980 | " TU at offset 0x%x [in module %s]"), | |
4981 | hex_string (sig_type->signature), | |
4982 | hex_string (header_signature), | |
4983 | dwo_unit->offset.sect_off, | |
4984 | bfd_get_filename (abfd)); | |
4985 | } | |
b0c7bfa9 DE |
4986 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
4987 | /* For DWOs coming from DWP files, we don't know the CU length | |
4988 | nor the type's offset in the TU until now. */ | |
4989 | dwo_unit->length = get_cu_length (&cu->header); | |
4990 | dwo_unit->type_offset_in_tu = type_offset_in_tu; | |
4991 | ||
4992 | /* Establish the type offset that can be used to lookup the type. | |
4993 | For DWO files, we don't know it until now. */ | |
4994 | sig_type->type_offset_in_section.sect_off = | |
4995 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
4996 | } | |
4997 | else | |
4998 | { | |
4999 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
5000 | dwo_abbrev_section, | |
5001 | info_ptr, 0); | |
5002 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
5003 | /* For DWOs coming from DWP files, we don't know the CU length | |
5004 | until now. */ | |
5005 | dwo_unit->length = get_cu_length (&cu->header); | |
5006 | } | |
5007 | ||
02142a6c DE |
5008 | /* Replace the CU's original abbrev table with the DWO's. |
5009 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
5010 | if (abbrev_table_provided) |
5011 | { | |
5012 | /* Don't free the provided abbrev table, the caller of | |
5013 | init_cutu_and_read_dies owns it. */ | |
5014 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5015 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
5016 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5017 | } | |
5018 | else | |
5019 | { | |
5020 | dwarf2_free_abbrev_table (cu); | |
5021 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5022 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
5023 | } |
5024 | ||
5025 | /* Read in the die, but leave space to copy over the attributes | |
5026 | from the stub. This has the benefit of simplifying the rest of | |
5027 | the code - all the work to maintain the illusion of a single | |
5028 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
5029 | num_extra_attrs = ((stmt_list != NULL) | |
5030 | + (low_pc != NULL) | |
5031 | + (high_pc != NULL) | |
5032 | + (ranges != NULL) | |
5033 | + (comp_dir != NULL)); | |
5034 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
5035 | result_has_children, num_extra_attrs); | |
5036 | ||
5037 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
5038 | comp_unit_die = *result_comp_unit_die; | |
5039 | i = comp_unit_die->num_attrs; | |
5040 | if (stmt_list != NULL) | |
5041 | comp_unit_die->attrs[i++] = *stmt_list; | |
5042 | if (low_pc != NULL) | |
5043 | comp_unit_die->attrs[i++] = *low_pc; | |
5044 | if (high_pc != NULL) | |
5045 | comp_unit_die->attrs[i++] = *high_pc; | |
5046 | if (ranges != NULL) | |
5047 | comp_unit_die->attrs[i++] = *ranges; | |
5048 | if (comp_dir != NULL) | |
5049 | comp_unit_die->attrs[i++] = *comp_dir; | |
5050 | comp_unit_die->num_attrs += num_extra_attrs; | |
5051 | ||
bf6af496 DE |
5052 | if (dwarf2_die_debug) |
5053 | { | |
5054 | fprintf_unfiltered (gdb_stdlog, | |
5055 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 5056 | get_section_name (section), |
bf6af496 DE |
5057 | (unsigned) (begin_info_ptr - section->buffer), |
5058 | bfd_get_filename (abfd)); | |
5059 | dump_die (comp_unit_die, dwarf2_die_debug); | |
5060 | } | |
5061 | ||
a2ce51a0 DE |
5062 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
5063 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
5064 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
5065 | to get it via circuitous means. Blech. */ | |
5066 | if (comp_dir != NULL) | |
5067 | result_reader->comp_dir = DW_STRING (comp_dir); | |
5068 | ||
b0c7bfa9 DE |
5069 | /* Skip dummy compilation units. */ |
5070 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
5071 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
5072 | return 0; | |
5073 | ||
5074 | *result_info_ptr = info_ptr; | |
5075 | return 1; | |
5076 | } | |
5077 | ||
5078 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
5079 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 5080 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
5081 | |
5082 | static struct dwo_unit * | |
5083 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
5084 | struct die_info *comp_unit_die) | |
5085 | { | |
5086 | struct dwarf2_cu *cu = this_cu->cu; | |
5087 | struct attribute *attr; | |
5088 | ULONGEST signature; | |
5089 | struct dwo_unit *dwo_unit; | |
5090 | const char *comp_dir, *dwo_name; | |
5091 | ||
a2ce51a0 DE |
5092 | gdb_assert (cu != NULL); |
5093 | ||
b0c7bfa9 DE |
5094 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
5095 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
5096 | gdb_assert (attr != NULL); | |
5097 | dwo_name = DW_STRING (attr); | |
5098 | comp_dir = NULL; | |
5099 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5100 | if (attr) | |
5101 | comp_dir = DW_STRING (attr); | |
5102 | ||
5103 | if (this_cu->is_debug_types) | |
5104 | { | |
5105 | struct signatured_type *sig_type; | |
5106 | ||
5107 | /* Since this_cu is the first member of struct signatured_type, | |
5108 | we can go from a pointer to one to a pointer to the other. */ | |
5109 | sig_type = (struct signatured_type *) this_cu; | |
5110 | signature = sig_type->signature; | |
5111 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
5112 | } | |
5113 | else | |
5114 | { | |
5115 | struct attribute *attr; | |
5116 | ||
5117 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
5118 | if (! attr) | |
5119 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
5120 | " [in module %s]"), | |
4262abfb | 5121 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
5122 | signature = DW_UNSND (attr); |
5123 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
5124 | signature); | |
5125 | } | |
5126 | ||
b0c7bfa9 DE |
5127 | return dwo_unit; |
5128 | } | |
5129 | ||
a2ce51a0 DE |
5130 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
5131 | Read a TU directly from a DWO file, bypassing the stub. */ | |
5132 | ||
5133 | static void | |
5134 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, int keep, | |
5135 | die_reader_func_ftype *die_reader_func, | |
5136 | void *data) | |
5137 | { | |
5138 | struct dwarf2_cu *cu; | |
5139 | struct signatured_type *sig_type; | |
5140 | struct cleanup *cleanups, *free_cu_cleanup; | |
5141 | struct die_reader_specs reader; | |
5142 | const gdb_byte *info_ptr; | |
5143 | struct die_info *comp_unit_die; | |
5144 | int has_children; | |
5145 | ||
5146 | /* Verify we can do the following downcast, and that we have the | |
5147 | data we need. */ | |
5148 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
5149 | sig_type = (struct signatured_type *) this_cu; | |
5150 | gdb_assert (sig_type->dwo_unit != NULL); | |
5151 | ||
5152 | cleanups = make_cleanup (null_cleanup, NULL); | |
5153 | ||
5154 | gdb_assert (this_cu->cu == NULL); | |
5155 | cu = xmalloc (sizeof (*cu)); | |
5156 | init_one_comp_unit (cu, this_cu); | |
5157 | /* If an error occurs while loading, release our storage. */ | |
5158 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
5159 | ||
5160 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
5161 | 0 /* abbrev_table_provided */, | |
5162 | NULL /* stub_comp_unit_die */, | |
5163 | sig_type->dwo_unit->dwo_file->comp_dir, | |
5164 | &reader, &info_ptr, | |
5165 | &comp_unit_die, &has_children) == 0) | |
5166 | { | |
5167 | /* Dummy die. */ | |
5168 | do_cleanups (cleanups); | |
5169 | return; | |
5170 | } | |
5171 | ||
5172 | /* All the "real" work is done here. */ | |
5173 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5174 | ||
5175 | /* This duplicates some code in init_cutu_and_read_dies, | |
5176 | but the alternative is making the latter more complex. | |
5177 | This function is only for the special case of using DWO files directly: | |
5178 | no point in overly complicating the general case just to handle this. */ | |
5179 | if (keep) | |
5180 | { | |
5181 | /* We've successfully allocated this compilation unit. Let our | |
5182 | caller clean it up when finished with it. */ | |
5183 | discard_cleanups (free_cu_cleanup); | |
5184 | ||
5185 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
5186 | So we have to manually free the abbrev table. */ | |
5187 | dwarf2_free_abbrev_table (cu); | |
5188 | ||
5189 | /* Link this CU into read_in_chain. */ | |
5190 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5191 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5192 | } | |
5193 | else | |
5194 | do_cleanups (free_cu_cleanup); | |
5195 | ||
5196 | do_cleanups (cleanups); | |
5197 | } | |
5198 | ||
fd820528 | 5199 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 5200 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 5201 | |
f4dc4d17 DE |
5202 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
5203 | Otherwise the table specified in the comp unit header is read in and used. | |
5204 | This is an optimization for when we already have the abbrev table. | |
5205 | ||
dee91e82 DE |
5206 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
5207 | Otherwise, a new CU is allocated with xmalloc. | |
5208 | ||
5209 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
5210 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
5211 | ||
5212 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 5213 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 5214 | |
70221824 | 5215 | static void |
fd820528 | 5216 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 5217 | struct abbrev_table *abbrev_table, |
fd820528 DE |
5218 | int use_existing_cu, int keep, |
5219 | die_reader_func_ftype *die_reader_func, | |
5220 | void *data) | |
c906108c | 5221 | { |
dee91e82 | 5222 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 5223 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5224 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5225 | struct dwarf2_cu *cu; |
d521ce57 | 5226 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 5227 | struct die_reader_specs reader; |
d85a05f0 | 5228 | struct die_info *comp_unit_die; |
dee91e82 | 5229 | int has_children; |
d85a05f0 | 5230 | struct attribute *attr; |
365156ad | 5231 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 5232 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 5233 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
5234 | /* Non-zero if CU currently points to a DWO file and we need to |
5235 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 5236 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 5237 | int rereading_dwo_cu = 0; |
c906108c | 5238 | |
09406207 DE |
5239 | if (dwarf2_die_debug) |
5240 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5241 | this_cu->is_debug_types ? "type" : "comp", | |
5242 | this_cu->offset.sect_off); | |
5243 | ||
dee91e82 DE |
5244 | if (use_existing_cu) |
5245 | gdb_assert (keep); | |
23745b47 | 5246 | |
a2ce51a0 DE |
5247 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
5248 | file (instead of going through the stub), short-circuit all of this. */ | |
5249 | if (this_cu->reading_dwo_directly) | |
5250 | { | |
5251 | /* Narrow down the scope of possibilities to have to understand. */ | |
5252 | gdb_assert (this_cu->is_debug_types); | |
5253 | gdb_assert (abbrev_table == NULL); | |
5254 | gdb_assert (!use_existing_cu); | |
5255 | init_tu_and_read_dwo_dies (this_cu, keep, die_reader_func, data); | |
5256 | return; | |
5257 | } | |
5258 | ||
dee91e82 DE |
5259 | cleanups = make_cleanup (null_cleanup, NULL); |
5260 | ||
5261 | /* This is cheap if the section is already read in. */ | |
5262 | dwarf2_read_section (objfile, section); | |
5263 | ||
5264 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
5265 | |
5266 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
5267 | |
5268 | if (use_existing_cu && this_cu->cu != NULL) | |
5269 | { | |
5270 | cu = this_cu->cu; | |
42e7ad6c DE |
5271 | |
5272 | /* If this CU is from a DWO file we need to start over, we need to | |
5273 | refetch the attributes from the skeleton CU. | |
5274 | This could be optimized by retrieving those attributes from when we | |
5275 | were here the first time: the previous comp_unit_die was stored in | |
5276 | comp_unit_obstack. But there's no data yet that we need this | |
5277 | optimization. */ | |
5278 | if (cu->dwo_unit != NULL) | |
5279 | rereading_dwo_cu = 1; | |
dee91e82 DE |
5280 | } |
5281 | else | |
5282 | { | |
5283 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5284 | gdb_assert (this_cu->cu == NULL); | |
5285 | ||
5286 | cu = xmalloc (sizeof (*cu)); | |
5287 | init_one_comp_unit (cu, this_cu); | |
5288 | ||
5289 | /* If an error occurs while loading, release our storage. */ | |
365156ad | 5290 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 5291 | } |
dee91e82 | 5292 | |
b0c7bfa9 | 5293 | /* Get the header. */ |
42e7ad6c DE |
5294 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
5295 | { | |
5296 | /* We already have the header, there's no need to read it in again. */ | |
5297 | info_ptr += cu->header.first_die_offset.cu_off; | |
5298 | } | |
5299 | else | |
5300 | { | |
3019eac3 | 5301 | if (this_cu->is_debug_types) |
dee91e82 DE |
5302 | { |
5303 | ULONGEST signature; | |
42e7ad6c | 5304 | cu_offset type_offset_in_tu; |
dee91e82 | 5305 | |
4bdcc0c1 DE |
5306 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
5307 | abbrev_section, info_ptr, | |
42e7ad6c DE |
5308 | &signature, |
5309 | &type_offset_in_tu); | |
dee91e82 | 5310 | |
42e7ad6c DE |
5311 | /* Since per_cu is the first member of struct signatured_type, |
5312 | we can go from a pointer to one to a pointer to the other. */ | |
5313 | sig_type = (struct signatured_type *) this_cu; | |
5314 | gdb_assert (sig_type->signature == signature); | |
5315 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
5316 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
5317 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
5318 | ||
42e7ad6c DE |
5319 | /* LENGTH has not been set yet for type units if we're |
5320 | using .gdb_index. */ | |
1ce1cefd | 5321 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
5322 | |
5323 | /* Establish the type offset that can be used to lookup the type. */ | |
5324 | sig_type->type_offset_in_section.sect_off = | |
5325 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
5326 | } |
5327 | else | |
5328 | { | |
4bdcc0c1 DE |
5329 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
5330 | abbrev_section, | |
5331 | info_ptr, 0); | |
dee91e82 DE |
5332 | |
5333 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 5334 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
5335 | } |
5336 | } | |
10b3939b | 5337 | |
6caca83c | 5338 | /* Skip dummy compilation units. */ |
dee91e82 | 5339 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
5340 | || peek_abbrev_code (abfd, info_ptr) == 0) |
5341 | { | |
dee91e82 | 5342 | do_cleanups (cleanups); |
21b2bd31 | 5343 | return; |
6caca83c CC |
5344 | } |
5345 | ||
433df2d4 DE |
5346 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
5347 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
5348 | done. Note that it's important that if the CU had an abbrev table |
5349 | on entry we don't free it when we're done: Somewhere up the call stack | |
5350 | it may be in use. */ | |
f4dc4d17 DE |
5351 | if (abbrev_table != NULL) |
5352 | { | |
5353 | gdb_assert (cu->abbrev_table == NULL); | |
5354 | gdb_assert (cu->header.abbrev_offset.sect_off | |
5355 | == abbrev_table->offset.sect_off); | |
5356 | cu->abbrev_table = abbrev_table; | |
5357 | } | |
5358 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 5359 | { |
4bdcc0c1 | 5360 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
5361 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5362 | } | |
42e7ad6c DE |
5363 | else if (rereading_dwo_cu) |
5364 | { | |
5365 | dwarf2_free_abbrev_table (cu); | |
5366 | dwarf2_read_abbrevs (cu, abbrev_section); | |
5367 | } | |
af703f96 | 5368 | |
dee91e82 | 5369 | /* Read the top level CU/TU die. */ |
3019eac3 | 5370 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 5371 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 5372 | |
b0c7bfa9 DE |
5373 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
5374 | from the DWO file. | |
5375 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
5376 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
5377 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5378 | if (attr) | |
5379 | { | |
3019eac3 | 5380 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 5381 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
5382 | |
5383 | if (has_children) | |
6a506a2d DE |
5384 | { |
5385 | complaint (&symfile_complaints, | |
5386 | _("compilation unit with DW_AT_GNU_dwo_name" | |
5387 | " has children (offset 0x%x) [in module %s]"), | |
5388 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
5389 | } | |
b0c7bfa9 | 5390 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 5391 | if (dwo_unit != NULL) |
3019eac3 | 5392 | { |
6a506a2d DE |
5393 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
5394 | abbrev_table != NULL, | |
a2ce51a0 | 5395 | comp_unit_die, NULL, |
6a506a2d DE |
5396 | &reader, &info_ptr, |
5397 | &dwo_comp_unit_die, &has_children) == 0) | |
5398 | { | |
5399 | /* Dummy die. */ | |
5400 | do_cleanups (cleanups); | |
5401 | return; | |
5402 | } | |
5403 | comp_unit_die = dwo_comp_unit_die; | |
5404 | } | |
5405 | else | |
5406 | { | |
5407 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
5408 | the stub. A complaint has already been logged. There's | |
5409 | not much more we can do except pass on the stub DIE to | |
5410 | die_reader_func. We don't want to throw an error on bad | |
5411 | debug info. */ | |
3019eac3 DE |
5412 | } |
5413 | } | |
5414 | ||
b0c7bfa9 | 5415 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
5416 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
5417 | ||
b0c7bfa9 | 5418 | /* Done, clean up. */ |
365156ad | 5419 | if (free_cu_cleanup != NULL) |
348e048f | 5420 | { |
365156ad TT |
5421 | if (keep) |
5422 | { | |
5423 | /* We've successfully allocated this compilation unit. Let our | |
5424 | caller clean it up when finished with it. */ | |
5425 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 5426 | |
365156ad TT |
5427 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5428 | So we have to manually free the abbrev table. */ | |
5429 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 5430 | |
365156ad TT |
5431 | /* Link this CU into read_in_chain. */ |
5432 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5433 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5434 | } | |
5435 | else | |
5436 | do_cleanups (free_cu_cleanup); | |
348e048f | 5437 | } |
365156ad TT |
5438 | |
5439 | do_cleanups (cleanups); | |
dee91e82 DE |
5440 | } |
5441 | ||
3019eac3 DE |
5442 | /* Read CU/TU THIS_CU in section SECTION, |
5443 | but do not follow DW_AT_GNU_dwo_name if present. | |
80626a55 DE |
5444 | DWOP_FILE, if non-NULL, is the DWO/DWP file to read (the caller is assumed |
5445 | to have already done the lookup to find the DWO/DWP file). | |
dee91e82 DE |
5446 | |
5447 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 5448 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
5449 | |
5450 | We fill in THIS_CU->length. | |
5451 | ||
5452 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
5453 | linker) then DIE_READER_FUNC will not get called. | |
5454 | ||
5455 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5456 | This is done in order to not leave THIS_CU->cu in a state where we have |
5457 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
5458 | |
5459 | static void | |
5460 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
5461 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 5462 | struct dwo_file *dwo_file, |
dee91e82 DE |
5463 | die_reader_func_ftype *die_reader_func, |
5464 | void *data) | |
5465 | { | |
5466 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 5467 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5468 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5469 | struct dwarf2_cu cu; |
d521ce57 | 5470 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
5471 | struct die_reader_specs reader; |
5472 | struct cleanup *cleanups; | |
5473 | struct die_info *comp_unit_die; | |
5474 | int has_children; | |
5475 | ||
09406207 DE |
5476 | if (dwarf2_die_debug) |
5477 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5478 | this_cu->is_debug_types ? "type" : "comp", | |
5479 | this_cu->offset.sect_off); | |
5480 | ||
dee91e82 DE |
5481 | gdb_assert (this_cu->cu == NULL); |
5482 | ||
dee91e82 DE |
5483 | /* This is cheap if the section is already read in. */ |
5484 | dwarf2_read_section (objfile, section); | |
5485 | ||
5486 | init_one_comp_unit (&cu, this_cu); | |
5487 | ||
5488 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
5489 | ||
5490 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
5491 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
5492 | abbrev_section, info_ptr, | |
3019eac3 | 5493 | this_cu->is_debug_types); |
dee91e82 | 5494 | |
1ce1cefd | 5495 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
5496 | |
5497 | /* Skip dummy compilation units. */ | |
5498 | if (info_ptr >= begin_info_ptr + this_cu->length | |
5499 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 5500 | { |
dee91e82 | 5501 | do_cleanups (cleanups); |
21b2bd31 | 5502 | return; |
93311388 | 5503 | } |
72bf9492 | 5504 | |
dee91e82 DE |
5505 | dwarf2_read_abbrevs (&cu, abbrev_section); |
5506 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
5507 | ||
3019eac3 | 5508 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
5509 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
5510 | ||
5511 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5512 | ||
5513 | do_cleanups (cleanups); | |
5514 | } | |
5515 | ||
3019eac3 DE |
5516 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
5517 | does not lookup the specified DWO file. | |
5518 | This cannot be used to read DWO files. | |
dee91e82 DE |
5519 | |
5520 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5521 | This is done in order to not leave THIS_CU->cu in a state where we have |
5522 | to care whether it refers to the "main" CU or the DWO CU. | |
5523 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
5524 | |
5525 | static void | |
5526 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
5527 | die_reader_func_ftype *die_reader_func, | |
5528 | void *data) | |
5529 | { | |
5530 | init_cutu_and_read_dies_no_follow (this_cu, | |
36586728 | 5531 | get_abbrev_section_for_cu (this_cu), |
3019eac3 | 5532 | NULL, |
dee91e82 DE |
5533 | die_reader_func, data); |
5534 | } | |
0018ea6f DE |
5535 | \f |
5536 | /* Type Unit Groups. | |
dee91e82 | 5537 | |
0018ea6f DE |
5538 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
5539 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
5540 | so that all types coming from the same compilation (.o file) are grouped | |
5541 | together. A future step could be to put the types in the same symtab as | |
5542 | the CU the types ultimately came from. */ | |
ff013f42 | 5543 | |
f4dc4d17 DE |
5544 | static hashval_t |
5545 | hash_type_unit_group (const void *item) | |
5546 | { | |
094b34ac | 5547 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 5548 | |
094b34ac | 5549 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5550 | } |
348e048f DE |
5551 | |
5552 | static int | |
f4dc4d17 | 5553 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5554 | { |
f4dc4d17 DE |
5555 | const struct type_unit_group *lhs = item_lhs; |
5556 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 5557 | |
094b34ac | 5558 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5559 | } |
348e048f | 5560 | |
f4dc4d17 DE |
5561 | /* Allocate a hash table for type unit groups. */ |
5562 | ||
5563 | static htab_t | |
5564 | allocate_type_unit_groups_table (void) | |
5565 | { | |
5566 | return htab_create_alloc_ex (3, | |
5567 | hash_type_unit_group, | |
5568 | eq_type_unit_group, | |
5569 | NULL, | |
5570 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5571 | hashtab_obstack_allocate, | |
5572 | dummy_obstack_deallocate); | |
5573 | } | |
dee91e82 | 5574 | |
f4dc4d17 DE |
5575 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5576 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5577 | of any one psymtab grow too big. */ | |
5578 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5579 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5580 | |
094b34ac | 5581 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5582 | Create the type_unit_group object used to hold one or more TUs. */ |
5583 | ||
5584 | static struct type_unit_group * | |
094b34ac | 5585 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5586 | { |
5587 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5588 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5589 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5590 | |
5591 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5592 | struct type_unit_group); | |
094b34ac | 5593 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 5594 | per_cu->objfile = objfile; |
f4dc4d17 | 5595 | |
094b34ac DE |
5596 | if (dwarf2_per_objfile->using_index) |
5597 | { | |
5598 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5599 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
5600 | } |
5601 | else | |
5602 | { | |
5603 | unsigned int line_offset = line_offset_struct.sect_off; | |
5604 | struct partial_symtab *pst; | |
5605 | char *name; | |
5606 | ||
5607 | /* Give the symtab a useful name for debug purposes. */ | |
5608 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5609 | name = xstrprintf ("<type_units_%d>", | |
5610 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5611 | else | |
5612 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5613 | ||
5614 | pst = create_partial_symtab (per_cu, name); | |
5615 | pst->anonymous = 1; | |
f4dc4d17 | 5616 | |
094b34ac DE |
5617 | xfree (name); |
5618 | } | |
f4dc4d17 | 5619 | |
094b34ac DE |
5620 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5621 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5622 | |
5623 | return tu_group; | |
5624 | } | |
5625 | ||
094b34ac DE |
5626 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5627 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5628 | |
5629 | static struct type_unit_group * | |
ff39bb5e | 5630 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
5631 | { |
5632 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5633 | struct type_unit_group *tu_group; | |
5634 | void **slot; | |
5635 | unsigned int line_offset; | |
5636 | struct type_unit_group type_unit_group_for_lookup; | |
5637 | ||
5638 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5639 | { | |
5640 | dwarf2_per_objfile->type_unit_groups = | |
5641 | allocate_type_unit_groups_table (); | |
5642 | } | |
5643 | ||
5644 | /* Do we need to create a new group, or can we use an existing one? */ | |
5645 | ||
5646 | if (stmt_list) | |
5647 | { | |
5648 | line_offset = DW_UNSND (stmt_list); | |
5649 | ++tu_stats->nr_symtab_sharers; | |
5650 | } | |
5651 | else | |
5652 | { | |
5653 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5654 | We can do various things here like create one group per TU or | |
5655 | spread them over multiple groups to split up the expansion work. | |
5656 | To avoid worst case scenarios (too many groups or too large groups) | |
5657 | we, umm, group them in bunches. */ | |
5658 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5659 | | (tu_stats->nr_stmt_less_type_units | |
5660 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5661 | ++tu_stats->nr_stmt_less_type_units; | |
5662 | } | |
5663 | ||
094b34ac DE |
5664 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5665 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5666 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5667 | &type_unit_group_for_lookup, INSERT); | |
5668 | if (*slot != NULL) | |
5669 | { | |
5670 | tu_group = *slot; | |
5671 | gdb_assert (tu_group != NULL); | |
5672 | } | |
5673 | else | |
5674 | { | |
5675 | sect_offset line_offset_struct; | |
5676 | ||
5677 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5678 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5679 | *slot = tu_group; |
5680 | ++tu_stats->nr_symtabs; | |
5681 | } | |
5682 | ||
5683 | return tu_group; | |
5684 | } | |
5685 | ||
5686 | /* Struct used to sort TUs by their abbreviation table offset. */ | |
5687 | ||
5688 | struct tu_abbrev_offset | |
5689 | { | |
5690 | struct signatured_type *sig_type; | |
5691 | sect_offset abbrev_offset; | |
5692 | }; | |
5693 | ||
5694 | /* Helper routine for build_type_unit_groups, passed to qsort. */ | |
5695 | ||
5696 | static int | |
5697 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
5698 | { | |
5699 | const struct tu_abbrev_offset * const *a = ap; | |
5700 | const struct tu_abbrev_offset * const *b = bp; | |
5701 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
5702 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
5703 | ||
5704 | return (aoff > boff) - (aoff < boff); | |
5705 | } | |
5706 | ||
5707 | /* A helper function to add a type_unit_group to a table. */ | |
5708 | ||
5709 | static int | |
5710 | add_type_unit_group_to_table (void **slot, void *datum) | |
5711 | { | |
5712 | struct type_unit_group *tu_group = *slot; | |
5713 | struct type_unit_group ***datap = datum; | |
5714 | ||
5715 | **datap = tu_group; | |
5716 | ++*datap; | |
5717 | ||
5718 | return 1; | |
5719 | } | |
5720 | ||
5721 | /* Efficiently read all the type units, calling init_cutu_and_read_dies on | |
5722 | each one passing FUNC,DATA. | |
5723 | ||
5724 | The efficiency is because we sort TUs by the abbrev table they use and | |
5725 | only read each abbrev table once. In one program there are 200K TUs | |
5726 | sharing 8K abbrev tables. | |
5727 | ||
5728 | The main purpose of this function is to support building the | |
5729 | dwarf2_per_objfile->type_unit_groups table. | |
5730 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
5731 | can collapse the search space by grouping them by stmt_list. | |
5732 | The savings can be significant, in the same program from above the 200K TUs | |
5733 | share 8K stmt_list tables. | |
5734 | ||
5735 | FUNC is expected to call get_type_unit_group, which will create the | |
5736 | struct type_unit_group if necessary and add it to | |
5737 | dwarf2_per_objfile->type_unit_groups. */ | |
5738 | ||
5739 | static void | |
5740 | build_type_unit_groups (die_reader_func_ftype *func, void *data) | |
5741 | { | |
5742 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5743 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5744 | struct cleanup *cleanups; | |
5745 | struct abbrev_table *abbrev_table; | |
5746 | sect_offset abbrev_offset; | |
5747 | struct tu_abbrev_offset *sorted_by_abbrev; | |
5748 | struct type_unit_group **iter; | |
5749 | int i; | |
5750 | ||
5751 | /* It's up to the caller to not call us multiple times. */ | |
5752 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
5753 | ||
5754 | if (dwarf2_per_objfile->n_type_units == 0) | |
5755 | return; | |
5756 | ||
5757 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
5758 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
5759 | read each abbrev table in. | |
5760 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
5761 | This is simpler and efficient enough for now. | |
5762 | ||
5763 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
5764 | symtab to use). Typically TUs with the same abbrev offset have the same | |
5765 | stmt_list value too so in practice this should work well. | |
5766 | ||
5767 | The basic algorithm here is: | |
5768 | ||
5769 | sort TUs by abbrev table | |
5770 | for each TU with same abbrev table: | |
5771 | read abbrev table if first user | |
5772 | read TU top level DIE | |
5773 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
5774 | call FUNC */ | |
5775 | ||
5776 | if (dwarf2_read_debug) | |
5777 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); | |
5778 | ||
5779 | /* Sort in a separate table to maintain the order of all_type_units | |
5780 | for .gdb_index: TU indices directly index all_type_units. */ | |
5781 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
5782 | dwarf2_per_objfile->n_type_units); | |
5783 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5784 | { | |
5785 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
5786 | ||
5787 | sorted_by_abbrev[i].sig_type = sig_type; | |
5788 | sorted_by_abbrev[i].abbrev_offset = | |
8a0459fd | 5789 | read_abbrev_offset (sig_type->per_cu.section, |
f4dc4d17 DE |
5790 | sig_type->per_cu.offset); |
5791 | } | |
5792 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
5793 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
5794 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
5795 | ||
094b34ac DE |
5796 | /* Note: In the .gdb_index case, get_type_unit_group may have already been |
5797 | called any number of times, so we don't reset tu_stats here. */ | |
5798 | ||
f4dc4d17 DE |
5799 | abbrev_offset.sect_off = ~(unsigned) 0; |
5800 | abbrev_table = NULL; | |
5801 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
5802 | ||
5803 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5804 | { | |
5805 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
5806 | ||
5807 | /* Switch to the next abbrev table if necessary. */ | |
5808 | if (abbrev_table == NULL | |
5809 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
5810 | { | |
5811 | if (abbrev_table != NULL) | |
5812 | { | |
5813 | abbrev_table_free (abbrev_table); | |
5814 | /* Reset to NULL in case abbrev_table_read_table throws | |
5815 | an error: abbrev_table_free_cleanup will get called. */ | |
5816 | abbrev_table = NULL; | |
5817 | } | |
5818 | abbrev_offset = tu->abbrev_offset; | |
5819 | abbrev_table = | |
5820 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
5821 | abbrev_offset); | |
5822 | ++tu_stats->nr_uniq_abbrev_tables; | |
5823 | } | |
5824 | ||
5825 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
5826 | func, data); | |
5827 | } | |
5828 | ||
a2ce51a0 DE |
5829 | /* type_unit_groups can be NULL if there is an error in the debug info. |
5830 | Just create an empty table so the rest of gdb doesn't have to watch | |
5831 | for this error case. */ | |
5832 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5833 | { | |
5834 | dwarf2_per_objfile->type_unit_groups = | |
5835 | allocate_type_unit_groups_table (); | |
5836 | dwarf2_per_objfile->n_type_unit_groups = 0; | |
5837 | } | |
5838 | ||
f4dc4d17 DE |
5839 | /* Create a vector of pointers to primary type units to make it easy to |
5840 | iterate over them and CUs. See dw2_get_primary_cu. */ | |
5841 | dwarf2_per_objfile->n_type_unit_groups = | |
5842 | htab_elements (dwarf2_per_objfile->type_unit_groups); | |
5843 | dwarf2_per_objfile->all_type_unit_groups = | |
5844 | obstack_alloc (&objfile->objfile_obstack, | |
5845 | dwarf2_per_objfile->n_type_unit_groups | |
5846 | * sizeof (struct type_unit_group *)); | |
5847 | iter = &dwarf2_per_objfile->all_type_unit_groups[0]; | |
5848 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5849 | add_type_unit_group_to_table, &iter); | |
5850 | gdb_assert (iter - &dwarf2_per_objfile->all_type_unit_groups[0] | |
5851 | == dwarf2_per_objfile->n_type_unit_groups); | |
5852 | ||
5853 | do_cleanups (cleanups); | |
5854 | ||
5855 | if (dwarf2_read_debug) | |
5856 | { | |
5857 | fprintf_unfiltered (gdb_stdlog, "Done building type unit groups:\n"); | |
5858 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
5859 | dwarf2_per_objfile->n_type_units); | |
5860 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
5861 | tu_stats->nr_uniq_abbrev_tables); | |
5862 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
5863 | tu_stats->nr_symtabs); | |
5864 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
5865 | tu_stats->nr_symtab_sharers); | |
5866 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
5867 | tu_stats->nr_stmt_less_type_units); | |
5868 | } | |
5869 | } | |
0018ea6f DE |
5870 | \f |
5871 | /* Partial symbol tables. */ | |
5872 | ||
5873 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5874 | ||
5875 | The caller must fill in the following details: | |
5876 | dirname, textlow, texthigh. */ | |
5877 | ||
5878 | static struct partial_symtab * | |
5879 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5880 | { | |
5881 | struct objfile *objfile = per_cu->objfile; | |
5882 | struct partial_symtab *pst; | |
5883 | ||
5884 | pst = start_psymtab_common (objfile, objfile->section_offsets, | |
5885 | name, 0, | |
5886 | objfile->global_psymbols.next, | |
5887 | objfile->static_psymbols.next); | |
5888 | ||
5889 | pst->psymtabs_addrmap_supported = 1; | |
5890 | ||
5891 | /* This is the glue that links PST into GDB's symbol API. */ | |
5892 | pst->read_symtab_private = per_cu; | |
5893 | pst->read_symtab = dwarf2_read_symtab; | |
5894 | per_cu->v.psymtab = pst; | |
5895 | ||
5896 | return pst; | |
5897 | } | |
5898 | ||
b93601f3 TT |
5899 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
5900 | type. */ | |
5901 | ||
5902 | struct process_psymtab_comp_unit_data | |
5903 | { | |
5904 | /* True if we are reading a DW_TAG_partial_unit. */ | |
5905 | ||
5906 | int want_partial_unit; | |
5907 | ||
5908 | /* The "pretend" language that is used if the CU doesn't declare a | |
5909 | language. */ | |
5910 | ||
5911 | enum language pretend_language; | |
5912 | }; | |
5913 | ||
0018ea6f DE |
5914 | /* die_reader_func for process_psymtab_comp_unit. */ |
5915 | ||
5916 | static void | |
5917 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 5918 | const gdb_byte *info_ptr, |
0018ea6f DE |
5919 | struct die_info *comp_unit_die, |
5920 | int has_children, | |
5921 | void *data) | |
5922 | { | |
5923 | struct dwarf2_cu *cu = reader->cu; | |
5924 | struct objfile *objfile = cu->objfile; | |
5925 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
5926 | struct attribute *attr; | |
5927 | CORE_ADDR baseaddr; | |
5928 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
5929 | struct partial_symtab *pst; | |
5930 | int has_pc_info; | |
5931 | const char *filename; | |
b93601f3 | 5932 | struct process_psymtab_comp_unit_data *info = data; |
0018ea6f | 5933 | |
b93601f3 | 5934 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
5935 | return; |
5936 | ||
5937 | gdb_assert (! per_cu->is_debug_types); | |
5938 | ||
b93601f3 | 5939 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
5940 | |
5941 | cu->list_in_scope = &file_symbols; | |
5942 | ||
5943 | /* Allocate a new partial symbol table structure. */ | |
5944 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
5945 | if (attr == NULL || !DW_STRING (attr)) | |
5946 | filename = ""; | |
5947 | else | |
5948 | filename = DW_STRING (attr); | |
5949 | ||
5950 | pst = create_partial_symtab (per_cu, filename); | |
5951 | ||
5952 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
5953 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5954 | if (attr != NULL) | |
5955 | pst->dirname = DW_STRING (attr); | |
5956 | ||
5957 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5958 | ||
5959 | dwarf2_find_base_address (comp_unit_die, cu); | |
5960 | ||
5961 | /* Possibly set the default values of LOWPC and HIGHPC from | |
5962 | `DW_AT_ranges'. */ | |
5963 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, | |
5964 | &best_highpc, cu, pst); | |
5965 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
5966 | /* Store the contiguous range if it is not empty; it can be empty for | |
5967 | CUs with no code. */ | |
5968 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
5969 | best_lowpc + baseaddr, | |
5970 | best_highpc + baseaddr - 1, pst); | |
5971 | ||
5972 | /* Check if comp unit has_children. | |
5973 | If so, read the rest of the partial symbols from this comp unit. | |
5974 | If not, there's no more debug_info for this comp unit. */ | |
5975 | if (has_children) | |
5976 | { | |
5977 | struct partial_die_info *first_die; | |
5978 | CORE_ADDR lowpc, highpc; | |
5979 | ||
5980 | lowpc = ((CORE_ADDR) -1); | |
5981 | highpc = ((CORE_ADDR) 0); | |
5982 | ||
5983 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5984 | ||
5985 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
5986 | ! has_pc_info, cu); | |
5987 | ||
5988 | /* If we didn't find a lowpc, set it to highpc to avoid | |
5989 | complaints from `maint check'. */ | |
5990 | if (lowpc == ((CORE_ADDR) -1)) | |
5991 | lowpc = highpc; | |
5992 | ||
5993 | /* If the compilation unit didn't have an explicit address range, | |
5994 | then use the information extracted from its child dies. */ | |
5995 | if (! has_pc_info) | |
5996 | { | |
5997 | best_lowpc = lowpc; | |
5998 | best_highpc = highpc; | |
5999 | } | |
6000 | } | |
6001 | pst->textlow = best_lowpc + baseaddr; | |
6002 | pst->texthigh = best_highpc + baseaddr; | |
6003 | ||
6004 | pst->n_global_syms = objfile->global_psymbols.next - | |
6005 | (objfile->global_psymbols.list + pst->globals_offset); | |
6006 | pst->n_static_syms = objfile->static_psymbols.next - | |
6007 | (objfile->static_psymbols.list + pst->statics_offset); | |
6008 | sort_pst_symbols (objfile, pst); | |
6009 | ||
6010 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
6011 | { | |
6012 | int i; | |
6013 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6014 | struct dwarf2_per_cu_data *iter; | |
6015 | ||
6016 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
6017 | post-pass. */ | |
6018 | pst->number_of_dependencies = len; | |
6019 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6020 | len * sizeof (struct symtab *)); | |
6021 | for (i = 0; | |
6022 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6023 | i, iter); | |
6024 | ++i) | |
6025 | pst->dependencies[i] = iter->v.psymtab; | |
6026 | ||
6027 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6028 | } | |
6029 | ||
6030 | /* Get the list of files included in the current compilation unit, | |
6031 | and build a psymtab for each of them. */ | |
6032 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
6033 | ||
6034 | if (dwarf2_read_debug) | |
6035 | { | |
6036 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6037 | ||
6038 | fprintf_unfiltered (gdb_stdlog, | |
6039 | "Psymtab for %s unit @0x%x: %s - %s" | |
6040 | ", %d global, %d static syms\n", | |
6041 | per_cu->is_debug_types ? "type" : "comp", | |
6042 | per_cu->offset.sect_off, | |
6043 | paddress (gdbarch, pst->textlow), | |
6044 | paddress (gdbarch, pst->texthigh), | |
6045 | pst->n_global_syms, pst->n_static_syms); | |
6046 | } | |
6047 | } | |
6048 | ||
6049 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6050 | Process compilation unit THIS_CU for a psymtab. */ | |
6051 | ||
6052 | static void | |
6053 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
6054 | int want_partial_unit, |
6055 | enum language pretend_language) | |
0018ea6f | 6056 | { |
b93601f3 TT |
6057 | struct process_psymtab_comp_unit_data info; |
6058 | ||
0018ea6f DE |
6059 | /* If this compilation unit was already read in, free the |
6060 | cached copy in order to read it in again. This is | |
6061 | necessary because we skipped some symbols when we first | |
6062 | read in the compilation unit (see load_partial_dies). | |
6063 | This problem could be avoided, but the benefit is unclear. */ | |
6064 | if (this_cu->cu != NULL) | |
6065 | free_one_cached_comp_unit (this_cu); | |
6066 | ||
6067 | gdb_assert (! this_cu->is_debug_types); | |
b93601f3 TT |
6068 | info.want_partial_unit = want_partial_unit; |
6069 | info.pretend_language = pretend_language; | |
0018ea6f DE |
6070 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
6071 | process_psymtab_comp_unit_reader, | |
b93601f3 | 6072 | &info); |
0018ea6f DE |
6073 | |
6074 | /* Age out any secondary CUs. */ | |
6075 | age_cached_comp_units (); | |
6076 | } | |
f4dc4d17 DE |
6077 | |
6078 | /* Reader function for build_type_psymtabs. */ | |
6079 | ||
6080 | static void | |
6081 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6082 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
6083 | struct die_info *type_unit_die, |
6084 | int has_children, | |
6085 | void *data) | |
6086 | { | |
6087 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6088 | struct dwarf2_cu *cu = reader->cu; | |
6089 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 6090 | struct signatured_type *sig_type; |
f4dc4d17 DE |
6091 | struct type_unit_group *tu_group; |
6092 | struct attribute *attr; | |
6093 | struct partial_die_info *first_die; | |
6094 | CORE_ADDR lowpc, highpc; | |
6095 | struct partial_symtab *pst; | |
6096 | ||
6097 | gdb_assert (data == NULL); | |
0186c6a7 DE |
6098 | gdb_assert (per_cu->is_debug_types); |
6099 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
6100 | |
6101 | if (! has_children) | |
6102 | return; | |
6103 | ||
6104 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 6105 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 6106 | |
0186c6a7 | 6107 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
6108 | |
6109 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
6110 | cu->list_in_scope = &file_symbols; | |
6111 | pst = create_partial_symtab (per_cu, ""); | |
6112 | pst->anonymous = 1; | |
6113 | ||
6114 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6115 | ||
6116 | lowpc = (CORE_ADDR) -1; | |
6117 | highpc = (CORE_ADDR) 0; | |
6118 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
6119 | ||
6120 | pst->n_global_syms = objfile->global_psymbols.next - | |
6121 | (objfile->global_psymbols.list + pst->globals_offset); | |
6122 | pst->n_static_syms = objfile->static_psymbols.next - | |
6123 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 6124 | sort_pst_symbols (objfile, pst); |
f4dc4d17 DE |
6125 | } |
6126 | ||
6127 | /* Traversal function for build_type_psymtabs. */ | |
6128 | ||
6129 | static int | |
6130 | build_type_psymtab_dependencies (void **slot, void *info) | |
6131 | { | |
6132 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6133 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 6134 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 6135 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
6136 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
6137 | struct signatured_type *iter; | |
f4dc4d17 DE |
6138 | int i; |
6139 | ||
6140 | gdb_assert (len > 0); | |
0186c6a7 | 6141 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
6142 | |
6143 | pst->number_of_dependencies = len; | |
6144 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6145 | len * sizeof (struct psymtab *)); | |
6146 | for (i = 0; | |
0186c6a7 | 6147 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
6148 | ++i) |
6149 | { | |
0186c6a7 DE |
6150 | gdb_assert (iter->per_cu.is_debug_types); |
6151 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 6152 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
6153 | } |
6154 | ||
0186c6a7 | 6155 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
6156 | |
6157 | return 1; | |
6158 | } | |
6159 | ||
6160 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6161 | Build partial symbol tables for the .debug_types comp-units. */ | |
6162 | ||
6163 | static void | |
6164 | build_type_psymtabs (struct objfile *objfile) | |
6165 | { | |
0e50663e | 6166 | if (! create_all_type_units (objfile)) |
348e048f DE |
6167 | return; |
6168 | ||
f4dc4d17 DE |
6169 | build_type_unit_groups (build_type_psymtabs_reader, NULL); |
6170 | ||
6171 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
6172 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
6173 | build_type_psymtab_dependencies, NULL); | |
348e048f DE |
6174 | } |
6175 | ||
60606b2c TT |
6176 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
6177 | ||
6178 | static void | |
6179 | psymtabs_addrmap_cleanup (void *o) | |
6180 | { | |
6181 | struct objfile *objfile = o; | |
ec61707d | 6182 | |
60606b2c TT |
6183 | objfile->psymtabs_addrmap = NULL; |
6184 | } | |
6185 | ||
95554aad TT |
6186 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
6187 | ||
6188 | static void | |
6189 | set_partial_user (struct objfile *objfile) | |
6190 | { | |
6191 | int i; | |
6192 | ||
6193 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
6194 | { | |
6195 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
6196 | struct partial_symtab *pst = per_cu->v.psymtab; | |
6197 | int j; | |
6198 | ||
36586728 TT |
6199 | if (pst == NULL) |
6200 | continue; | |
6201 | ||
95554aad TT |
6202 | for (j = 0; j < pst->number_of_dependencies; ++j) |
6203 | { | |
6204 | /* Set the 'user' field only if it is not already set. */ | |
6205 | if (pst->dependencies[j]->user == NULL) | |
6206 | pst->dependencies[j]->user = pst; | |
6207 | } | |
6208 | } | |
6209 | } | |
6210 | ||
93311388 DE |
6211 | /* Build the partial symbol table by doing a quick pass through the |
6212 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 6213 | |
93311388 | 6214 | static void |
c67a9c90 | 6215 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 6216 | { |
60606b2c TT |
6217 | struct cleanup *back_to, *addrmap_cleanup; |
6218 | struct obstack temp_obstack; | |
21b2bd31 | 6219 | int i; |
93311388 | 6220 | |
45cfd468 DE |
6221 | if (dwarf2_read_debug) |
6222 | { | |
6223 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 6224 | objfile_name (objfile)); |
45cfd468 DE |
6225 | } |
6226 | ||
98bfdba5 PA |
6227 | dwarf2_per_objfile->reading_partial_symbols = 1; |
6228 | ||
be391dca | 6229 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 6230 | |
93311388 DE |
6231 | /* Any cached compilation units will be linked by the per-objfile |
6232 | read_in_chain. Make sure to free them when we're done. */ | |
6233 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 6234 | |
348e048f DE |
6235 | build_type_psymtabs (objfile); |
6236 | ||
93311388 | 6237 | create_all_comp_units (objfile); |
c906108c | 6238 | |
60606b2c TT |
6239 | /* Create a temporary address map on a temporary obstack. We later |
6240 | copy this to the final obstack. */ | |
6241 | obstack_init (&temp_obstack); | |
6242 | make_cleanup_obstack_free (&temp_obstack); | |
6243 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
6244 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 6245 | |
21b2bd31 | 6246 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 6247 | { |
21b2bd31 | 6248 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 6249 | |
b93601f3 | 6250 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 6251 | } |
ff013f42 | 6252 | |
95554aad TT |
6253 | set_partial_user (objfile); |
6254 | ||
ff013f42 JK |
6255 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
6256 | &objfile->objfile_obstack); | |
60606b2c | 6257 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 6258 | |
ae038cb0 | 6259 | do_cleanups (back_to); |
45cfd468 DE |
6260 | |
6261 | if (dwarf2_read_debug) | |
6262 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
4262abfb | 6263 | objfile_name (objfile)); |
ae038cb0 DJ |
6264 | } |
6265 | ||
3019eac3 | 6266 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
6267 | |
6268 | static void | |
dee91e82 | 6269 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 6270 | const gdb_byte *info_ptr, |
dee91e82 DE |
6271 | struct die_info *comp_unit_die, |
6272 | int has_children, | |
6273 | void *data) | |
ae038cb0 | 6274 | { |
dee91e82 | 6275 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 6276 | |
95554aad | 6277 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 6278 | |
ae038cb0 DJ |
6279 | /* Check if comp unit has_children. |
6280 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 6281 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 6282 | if (has_children) |
dee91e82 DE |
6283 | load_partial_dies (reader, info_ptr, 0); |
6284 | } | |
98bfdba5 | 6285 | |
dee91e82 DE |
6286 | /* Load the partial DIEs for a secondary CU into memory. |
6287 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 6288 | |
dee91e82 DE |
6289 | static void |
6290 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
6291 | { | |
f4dc4d17 DE |
6292 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6293 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
6294 | } |
6295 | ||
ae038cb0 | 6296 | static void |
36586728 TT |
6297 | read_comp_units_from_section (struct objfile *objfile, |
6298 | struct dwarf2_section_info *section, | |
6299 | unsigned int is_dwz, | |
6300 | int *n_allocated, | |
6301 | int *n_comp_units, | |
6302 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 6303 | { |
d521ce57 | 6304 | const gdb_byte *info_ptr; |
a32a8923 | 6305 | bfd *abfd = get_section_bfd_owner (section); |
be391dca | 6306 | |
bf6af496 DE |
6307 | if (dwarf2_read_debug) |
6308 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", | |
a32a8923 DE |
6309 | get_section_name (section), |
6310 | get_section_file_name (section)); | |
bf6af496 | 6311 | |
36586728 | 6312 | dwarf2_read_section (objfile, section); |
ae038cb0 | 6313 | |
36586728 | 6314 | info_ptr = section->buffer; |
6e70227d | 6315 | |
36586728 | 6316 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 6317 | { |
c764a876 | 6318 | unsigned int length, initial_length_size; |
ae038cb0 | 6319 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 6320 | sect_offset offset; |
ae038cb0 | 6321 | |
36586728 | 6322 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
6323 | |
6324 | /* Read just enough information to find out where the next | |
6325 | compilation unit is. */ | |
36586728 | 6326 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
6327 | |
6328 | /* Save the compilation unit for later lookup. */ | |
6329 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
6330 | sizeof (struct dwarf2_per_cu_data)); | |
6331 | memset (this_cu, 0, sizeof (*this_cu)); | |
6332 | this_cu->offset = offset; | |
c764a876 | 6333 | this_cu->length = length + initial_length_size; |
36586728 | 6334 | this_cu->is_dwz = is_dwz; |
9291a0cd | 6335 | this_cu->objfile = objfile; |
8a0459fd | 6336 | this_cu->section = section; |
ae038cb0 | 6337 | |
36586728 | 6338 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 6339 | { |
36586728 TT |
6340 | *n_allocated *= 2; |
6341 | *all_comp_units = xrealloc (*all_comp_units, | |
6342 | *n_allocated | |
6343 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 6344 | } |
36586728 TT |
6345 | (*all_comp_units)[*n_comp_units] = this_cu; |
6346 | ++*n_comp_units; | |
ae038cb0 DJ |
6347 | |
6348 | info_ptr = info_ptr + this_cu->length; | |
6349 | } | |
36586728 TT |
6350 | } |
6351 | ||
6352 | /* Create a list of all compilation units in OBJFILE. | |
6353 | This is only done for -readnow and building partial symtabs. */ | |
6354 | ||
6355 | static void | |
6356 | create_all_comp_units (struct objfile *objfile) | |
6357 | { | |
6358 | int n_allocated; | |
6359 | int n_comp_units; | |
6360 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 6361 | struct dwz_file *dwz; |
36586728 TT |
6362 | |
6363 | n_comp_units = 0; | |
6364 | n_allocated = 10; | |
6365 | all_comp_units = xmalloc (n_allocated | |
6366 | * sizeof (struct dwarf2_per_cu_data *)); | |
6367 | ||
6368 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
6369 | &n_allocated, &n_comp_units, &all_comp_units); | |
6370 | ||
4db1a1dc TT |
6371 | dwz = dwarf2_get_dwz_file (); |
6372 | if (dwz != NULL) | |
6373 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
6374 | &n_allocated, &n_comp_units, | |
6375 | &all_comp_units); | |
ae038cb0 DJ |
6376 | |
6377 | dwarf2_per_objfile->all_comp_units | |
6378 | = obstack_alloc (&objfile->objfile_obstack, | |
6379 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6380 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
6381 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6382 | xfree (all_comp_units); | |
6383 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
6384 | } |
6385 | ||
5734ee8b DJ |
6386 | /* Process all loaded DIEs for compilation unit CU, starting at |
6387 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
6388 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
6389 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
6390 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
6391 | and record the covered ranges in the addrmap. */ | |
c906108c | 6392 | |
72bf9492 DJ |
6393 | static void |
6394 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 6395 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 6396 | { |
72bf9492 | 6397 | struct partial_die_info *pdi; |
c906108c | 6398 | |
91c24f0a DC |
6399 | /* Now, march along the PDI's, descending into ones which have |
6400 | interesting children but skipping the children of the other ones, | |
6401 | until we reach the end of the compilation unit. */ | |
c906108c | 6402 | |
72bf9492 | 6403 | pdi = first_die; |
91c24f0a | 6404 | |
72bf9492 DJ |
6405 | while (pdi != NULL) |
6406 | { | |
6407 | fixup_partial_die (pdi, cu); | |
c906108c | 6408 | |
f55ee35c | 6409 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
6410 | children, so we need to look at them. Ditto for anonymous |
6411 | enums. */ | |
933c6fe4 | 6412 | |
72bf9492 | 6413 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
6414 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
6415 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 6416 | { |
72bf9492 | 6417 | switch (pdi->tag) |
c906108c SS |
6418 | { |
6419 | case DW_TAG_subprogram: | |
5734ee8b | 6420 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 6421 | break; |
72929c62 | 6422 | case DW_TAG_constant: |
c906108c SS |
6423 | case DW_TAG_variable: |
6424 | case DW_TAG_typedef: | |
91c24f0a | 6425 | case DW_TAG_union_type: |
72bf9492 | 6426 | if (!pdi->is_declaration) |
63d06c5c | 6427 | { |
72bf9492 | 6428 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
6429 | } |
6430 | break; | |
c906108c | 6431 | case DW_TAG_class_type: |
680b30c7 | 6432 | case DW_TAG_interface_type: |
c906108c | 6433 | case DW_TAG_structure_type: |
72bf9492 | 6434 | if (!pdi->is_declaration) |
c906108c | 6435 | { |
72bf9492 | 6436 | add_partial_symbol (pdi, cu); |
c906108c SS |
6437 | } |
6438 | break; | |
91c24f0a | 6439 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
6440 | if (!pdi->is_declaration) |
6441 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
6442 | break; |
6443 | case DW_TAG_base_type: | |
a02abb62 | 6444 | case DW_TAG_subrange_type: |
c906108c | 6445 | /* File scope base type definitions are added to the partial |
c5aa993b | 6446 | symbol table. */ |
72bf9492 | 6447 | add_partial_symbol (pdi, cu); |
c906108c | 6448 | break; |
d9fa45fe | 6449 | case DW_TAG_namespace: |
5734ee8b | 6450 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 6451 | break; |
5d7cb8df JK |
6452 | case DW_TAG_module: |
6453 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
6454 | break; | |
95554aad TT |
6455 | case DW_TAG_imported_unit: |
6456 | { | |
6457 | struct dwarf2_per_cu_data *per_cu; | |
6458 | ||
f4dc4d17 DE |
6459 | /* For now we don't handle imported units in type units. */ |
6460 | if (cu->per_cu->is_debug_types) | |
6461 | { | |
6462 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6463 | " supported in type units [in module %s]"), | |
4262abfb | 6464 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
6465 | } |
6466 | ||
95554aad | 6467 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 6468 | pdi->is_dwz, |
95554aad TT |
6469 | cu->objfile); |
6470 | ||
6471 | /* Go read the partial unit, if needed. */ | |
6472 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 6473 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 6474 | |
f4dc4d17 | 6475 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 6476 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
6477 | } |
6478 | break; | |
c906108c SS |
6479 | default: |
6480 | break; | |
6481 | } | |
6482 | } | |
6483 | ||
72bf9492 DJ |
6484 | /* If the die has a sibling, skip to the sibling. */ |
6485 | ||
6486 | pdi = pdi->die_sibling; | |
6487 | } | |
6488 | } | |
6489 | ||
6490 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 6491 | |
72bf9492 | 6492 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
6493 | name is concatenated with "::" and the partial DIE's name. For |
6494 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
6495 | Enumerators are an exception; they use the scope of their parent |
6496 | enumeration type, i.e. the name of the enumeration type is not | |
6497 | prepended to the enumerator. | |
91c24f0a | 6498 | |
72bf9492 DJ |
6499 | There are two complexities. One is DW_AT_specification; in this |
6500 | case "parent" means the parent of the target of the specification, | |
6501 | instead of the direct parent of the DIE. The other is compilers | |
6502 | which do not emit DW_TAG_namespace; in this case we try to guess | |
6503 | the fully qualified name of structure types from their members' | |
6504 | linkage names. This must be done using the DIE's children rather | |
6505 | than the children of any DW_AT_specification target. We only need | |
6506 | to do this for structures at the top level, i.e. if the target of | |
6507 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
6508 | have a parent. */ | |
6509 | ||
6510 | /* Compute the scope prefix associated with PDI's parent, in | |
6511 | compilation unit CU. The result will be allocated on CU's | |
6512 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
6513 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 6514 | static const char * |
72bf9492 DJ |
6515 | partial_die_parent_scope (struct partial_die_info *pdi, |
6516 | struct dwarf2_cu *cu) | |
6517 | { | |
15d034d0 | 6518 | const char *grandparent_scope; |
72bf9492 | 6519 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 6520 | |
72bf9492 DJ |
6521 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
6522 | then this means the parent of the specification DIE. */ | |
6523 | ||
6524 | real_pdi = pdi; | |
72bf9492 | 6525 | while (real_pdi->has_specification) |
36586728 TT |
6526 | real_pdi = find_partial_die (real_pdi->spec_offset, |
6527 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
6528 | |
6529 | parent = real_pdi->die_parent; | |
6530 | if (parent == NULL) | |
6531 | return NULL; | |
6532 | ||
6533 | if (parent->scope_set) | |
6534 | return parent->scope; | |
6535 | ||
6536 | fixup_partial_die (parent, cu); | |
6537 | ||
10b3939b | 6538 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 6539 | |
acebe513 UW |
6540 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
6541 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
6542 | Work around this problem here. */ | |
6543 | if (cu->language == language_cplus | |
6e70227d | 6544 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
6545 | && strcmp (parent->name, "::") == 0 |
6546 | && grandparent_scope == NULL) | |
6547 | { | |
6548 | parent->scope = NULL; | |
6549 | parent->scope_set = 1; | |
6550 | return NULL; | |
6551 | } | |
6552 | ||
9c6c53f7 SA |
6553 | if (pdi->tag == DW_TAG_enumerator) |
6554 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
6555 | parent->scope = grandparent_scope; | |
6556 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 6557 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
6558 | || parent->tag == DW_TAG_structure_type |
6559 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 6560 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
6561 | || parent->tag == DW_TAG_union_type |
6562 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
6563 | { |
6564 | if (grandparent_scope == NULL) | |
6565 | parent->scope = parent->name; | |
6566 | else | |
3e43a32a MS |
6567 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
6568 | grandparent_scope, | |
f55ee35c | 6569 | parent->name, 0, cu); |
72bf9492 | 6570 | } |
72bf9492 DJ |
6571 | else |
6572 | { | |
6573 | /* FIXME drow/2004-04-01: What should we be doing with | |
6574 | function-local names? For partial symbols, we should probably be | |
6575 | ignoring them. */ | |
6576 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6577 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 6578 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 6579 | parent->scope = grandparent_scope; |
c906108c SS |
6580 | } |
6581 | ||
72bf9492 DJ |
6582 | parent->scope_set = 1; |
6583 | return parent->scope; | |
6584 | } | |
6585 | ||
6586 | /* Return the fully scoped name associated with PDI, from compilation unit | |
6587 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 6588 | |
72bf9492 DJ |
6589 | static char * |
6590 | partial_die_full_name (struct partial_die_info *pdi, | |
6591 | struct dwarf2_cu *cu) | |
6592 | { | |
15d034d0 | 6593 | const char *parent_scope; |
72bf9492 | 6594 | |
98bfdba5 PA |
6595 | /* If this is a template instantiation, we can not work out the |
6596 | template arguments from partial DIEs. So, unfortunately, we have | |
6597 | to go through the full DIEs. At least any work we do building | |
6598 | types here will be reused if full symbols are loaded later. */ | |
6599 | if (pdi->has_template_arguments) | |
6600 | { | |
6601 | fixup_partial_die (pdi, cu); | |
6602 | ||
6603 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
6604 | { | |
6605 | struct die_info *die; | |
6606 | struct attribute attr; | |
6607 | struct dwarf2_cu *ref_cu = cu; | |
6608 | ||
b64f50a1 | 6609 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
6610 | attr.name = 0; |
6611 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 6612 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
6613 | die = follow_die_ref (NULL, &attr, &ref_cu); |
6614 | ||
6615 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
6616 | } | |
6617 | } | |
6618 | ||
72bf9492 DJ |
6619 | parent_scope = partial_die_parent_scope (pdi, cu); |
6620 | if (parent_scope == NULL) | |
6621 | return NULL; | |
6622 | else | |
f55ee35c | 6623 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
6624 | } |
6625 | ||
6626 | static void | |
72bf9492 | 6627 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 6628 | { |
e7c27a73 | 6629 | struct objfile *objfile = cu->objfile; |
c906108c | 6630 | CORE_ADDR addr = 0; |
15d034d0 | 6631 | const char *actual_name = NULL; |
e142c38c | 6632 | CORE_ADDR baseaddr; |
15d034d0 | 6633 | char *built_actual_name; |
e142c38c DJ |
6634 | |
6635 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6636 | |
15d034d0 TT |
6637 | built_actual_name = partial_die_full_name (pdi, cu); |
6638 | if (built_actual_name != NULL) | |
6639 | actual_name = built_actual_name; | |
63d06c5c | 6640 | |
72bf9492 DJ |
6641 | if (actual_name == NULL) |
6642 | actual_name = pdi->name; | |
6643 | ||
c906108c SS |
6644 | switch (pdi->tag) |
6645 | { | |
6646 | case DW_TAG_subprogram: | |
2cfa0c8d | 6647 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 6648 | { |
2cfa0c8d JB |
6649 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
6650 | of the global scope. But in Ada, we want to be able to access | |
6651 | nested procedures globally. So all Ada subprograms are stored | |
6652 | in the global scope. */ | |
f47fb265 | 6653 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 6654 | mst_text, objfile); */ |
f47fb265 | 6655 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6656 | built_actual_name != NULL, |
f47fb265 MS |
6657 | VAR_DOMAIN, LOC_BLOCK, |
6658 | &objfile->global_psymbols, | |
6659 | 0, pdi->lowpc + baseaddr, | |
6660 | cu->language, objfile); | |
c906108c SS |
6661 | } |
6662 | else | |
6663 | { | |
f47fb265 | 6664 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 6665 | mst_file_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->static_psymbols, | |
6670 | 0, pdi->lowpc + baseaddr, | |
6671 | cu->language, objfile); | |
c906108c SS |
6672 | } |
6673 | break; | |
72929c62 JB |
6674 | case DW_TAG_constant: |
6675 | { | |
6676 | struct psymbol_allocation_list *list; | |
6677 | ||
6678 | if (pdi->is_external) | |
6679 | list = &objfile->global_psymbols; | |
6680 | else | |
6681 | list = &objfile->static_psymbols; | |
f47fb265 | 6682 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6683 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
f47fb265 | 6684 | list, 0, 0, cu->language, objfile); |
72929c62 JB |
6685 | } |
6686 | break; | |
c906108c | 6687 | case DW_TAG_variable: |
95554aad TT |
6688 | if (pdi->d.locdesc) |
6689 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 6690 | |
95554aad | 6691 | if (pdi->d.locdesc |
caac4577 JG |
6692 | && addr == 0 |
6693 | && !dwarf2_per_objfile->has_section_at_zero) | |
6694 | { | |
6695 | /* A global or static variable may also have been stripped | |
6696 | out by the linker if unused, in which case its address | |
6697 | will be nullified; do not add such variables into partial | |
6698 | symbol table then. */ | |
6699 | } | |
6700 | else if (pdi->is_external) | |
c906108c SS |
6701 | { |
6702 | /* Global Variable. | |
6703 | Don't enter into the minimal symbol tables as there is | |
6704 | a minimal symbol table entry from the ELF symbols already. | |
6705 | Enter into partial symbol table if it has a location | |
6706 | descriptor or a type. | |
6707 | If the location descriptor is missing, new_symbol will create | |
6708 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
6709 | be determined from the minimal symbol table whenever the variable | |
6710 | is referenced. | |
6711 | The address for the partial symbol table entry is not | |
6712 | used by GDB, but it comes in handy for debugging partial symbol | |
6713 | table building. */ | |
6714 | ||
95554aad | 6715 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 6716 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6717 | built_actual_name != NULL, |
f47fb265 MS |
6718 | VAR_DOMAIN, LOC_STATIC, |
6719 | &objfile->global_psymbols, | |
6720 | 0, addr + baseaddr, | |
6721 | cu->language, objfile); | |
c906108c SS |
6722 | } |
6723 | else | |
6724 | { | |
0963b4bd | 6725 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 6726 | if (pdi->d.locdesc == NULL) |
decbce07 | 6727 | { |
15d034d0 | 6728 | xfree (built_actual_name); |
decbce07 MS |
6729 | return; |
6730 | } | |
f47fb265 | 6731 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 6732 | mst_file_data, objfile); */ |
f47fb265 | 6733 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6734 | built_actual_name != NULL, |
f47fb265 MS |
6735 | VAR_DOMAIN, LOC_STATIC, |
6736 | &objfile->static_psymbols, | |
6737 | 0, addr + baseaddr, | |
6738 | cu->language, objfile); | |
c906108c SS |
6739 | } |
6740 | break; | |
6741 | case DW_TAG_typedef: | |
6742 | case DW_TAG_base_type: | |
a02abb62 | 6743 | case DW_TAG_subrange_type: |
38d518c9 | 6744 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6745 | built_actual_name != NULL, |
176620f1 | 6746 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 6747 | &objfile->static_psymbols, |
e142c38c | 6748 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6749 | break; |
72bf9492 DJ |
6750 | case DW_TAG_namespace: |
6751 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 6752 | built_actual_name != NULL, |
72bf9492 DJ |
6753 | VAR_DOMAIN, LOC_TYPEDEF, |
6754 | &objfile->global_psymbols, | |
6755 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
6756 | break; | |
c906108c | 6757 | case DW_TAG_class_type: |
680b30c7 | 6758 | case DW_TAG_interface_type: |
c906108c SS |
6759 | case DW_TAG_structure_type: |
6760 | case DW_TAG_union_type: | |
6761 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
6762 | /* Skip external references. The DWARF standard says in the section |
6763 | about "Structure, Union, and Class Type Entries": "An incomplete | |
6764 | structure, union or class type is represented by a structure, | |
6765 | union or class entry that does not have a byte size attribute | |
6766 | and that has a DW_AT_declaration attribute." */ | |
6767 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 6768 | { |
15d034d0 | 6769 | xfree (built_actual_name); |
decbce07 MS |
6770 | return; |
6771 | } | |
fa4028e9 | 6772 | |
63d06c5c DC |
6773 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
6774 | static vs. global. */ | |
38d518c9 | 6775 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6776 | built_actual_name != NULL, |
176620f1 | 6777 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
6778 | (cu->language == language_cplus |
6779 | || cu->language == language_java) | |
63d06c5c DC |
6780 | ? &objfile->global_psymbols |
6781 | : &objfile->static_psymbols, | |
e142c38c | 6782 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6783 | |
c906108c SS |
6784 | break; |
6785 | case DW_TAG_enumerator: | |
38d518c9 | 6786 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6787 | built_actual_name != NULL, |
176620f1 | 6788 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
6789 | (cu->language == language_cplus |
6790 | || cu->language == language_java) | |
f6fe98ef DJ |
6791 | ? &objfile->global_psymbols |
6792 | : &objfile->static_psymbols, | |
e142c38c | 6793 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
6794 | break; |
6795 | default: | |
6796 | break; | |
6797 | } | |
5c4e30ca | 6798 | |
15d034d0 | 6799 | xfree (built_actual_name); |
c906108c SS |
6800 | } |
6801 | ||
5c4e30ca DC |
6802 | /* Read a partial die corresponding to a namespace; also, add a symbol |
6803 | corresponding to that namespace to the symbol table. NAMESPACE is | |
6804 | the name of the enclosing namespace. */ | |
91c24f0a | 6805 | |
72bf9492 DJ |
6806 | static void |
6807 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 6808 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 6809 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 6810 | { |
72bf9492 | 6811 | /* Add a symbol for the namespace. */ |
e7c27a73 | 6812 | |
72bf9492 | 6813 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
6814 | |
6815 | /* Now scan partial symbols in that namespace. */ | |
6816 | ||
91c24f0a | 6817 | if (pdi->has_children) |
5734ee8b | 6818 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
6819 | } |
6820 | ||
5d7cb8df JK |
6821 | /* Read a partial die corresponding to a Fortran module. */ |
6822 | ||
6823 | static void | |
6824 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
6825 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
6826 | { | |
f55ee35c | 6827 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
6828 | |
6829 | if (pdi->has_children) | |
6830 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
6831 | } | |
6832 | ||
bc30ff58 JB |
6833 | /* Read a partial die corresponding to a subprogram and create a partial |
6834 | symbol for that subprogram. When the CU language allows it, this | |
6835 | routine also defines a partial symbol for each nested subprogram | |
6836 | that this subprogram contains. | |
6e70227d | 6837 | |
bc30ff58 JB |
6838 | DIE my also be a lexical block, in which case we simply search |
6839 | recursively for suprograms defined inside that lexical block. | |
6840 | Again, this is only performed when the CU language allows this | |
6841 | type of definitions. */ | |
6842 | ||
6843 | static void | |
6844 | add_partial_subprogram (struct partial_die_info *pdi, | |
6845 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 6846 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
6847 | { |
6848 | if (pdi->tag == DW_TAG_subprogram) | |
6849 | { | |
6850 | if (pdi->has_pc_info) | |
6851 | { | |
6852 | if (pdi->lowpc < *lowpc) | |
6853 | *lowpc = pdi->lowpc; | |
6854 | if (pdi->highpc > *highpc) | |
6855 | *highpc = pdi->highpc; | |
5734ee8b DJ |
6856 | if (need_pc) |
6857 | { | |
6858 | CORE_ADDR baseaddr; | |
6859 | struct objfile *objfile = cu->objfile; | |
6860 | ||
6861 | baseaddr = ANOFFSET (objfile->section_offsets, | |
6862 | SECT_OFF_TEXT (objfile)); | |
6863 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
6864 | pdi->lowpc + baseaddr, |
6865 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 6866 | cu->per_cu->v.psymtab); |
5734ee8b | 6867 | } |
481860b3 GB |
6868 | } |
6869 | ||
6870 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
6871 | { | |
bc30ff58 | 6872 | if (!pdi->is_declaration) |
e8d05480 JB |
6873 | /* Ignore subprogram DIEs that do not have a name, they are |
6874 | illegal. Do not emit a complaint at this point, we will | |
6875 | do so when we convert this psymtab into a symtab. */ | |
6876 | if (pdi->name) | |
6877 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
6878 | } |
6879 | } | |
6e70227d | 6880 | |
bc30ff58 JB |
6881 | if (! pdi->has_children) |
6882 | return; | |
6883 | ||
6884 | if (cu->language == language_ada) | |
6885 | { | |
6886 | pdi = pdi->die_child; | |
6887 | while (pdi != NULL) | |
6888 | { | |
6889 | fixup_partial_die (pdi, cu); | |
6890 | if (pdi->tag == DW_TAG_subprogram | |
6891 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 6892 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
6893 | pdi = pdi->die_sibling; |
6894 | } | |
6895 | } | |
6896 | } | |
6897 | ||
91c24f0a DC |
6898 | /* Read a partial die corresponding to an enumeration type. */ |
6899 | ||
72bf9492 DJ |
6900 | static void |
6901 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
6902 | struct dwarf2_cu *cu) | |
91c24f0a | 6903 | { |
72bf9492 | 6904 | struct partial_die_info *pdi; |
91c24f0a DC |
6905 | |
6906 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
6907 | add_partial_symbol (enum_pdi, cu); |
6908 | ||
6909 | pdi = enum_pdi->die_child; | |
6910 | while (pdi) | |
91c24f0a | 6911 | { |
72bf9492 | 6912 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 6913 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 6914 | else |
72bf9492 DJ |
6915 | add_partial_symbol (pdi, cu); |
6916 | pdi = pdi->die_sibling; | |
91c24f0a | 6917 | } |
91c24f0a DC |
6918 | } |
6919 | ||
6caca83c CC |
6920 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
6921 | ||
6922 | static unsigned int | |
d521ce57 | 6923 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
6924 | { |
6925 | unsigned int bytes_read; | |
6926 | ||
6927 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6928 | } | |
6929 | ||
4bb7a0a7 DJ |
6930 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
6931 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
6932 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
6933 | the initial number. */ | |
6934 | ||
6935 | static struct abbrev_info * | |
d521ce57 | 6936 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 6937 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
6938 | { |
6939 | bfd *abfd = cu->objfile->obfd; | |
6940 | unsigned int abbrev_number; | |
6941 | struct abbrev_info *abbrev; | |
6942 | ||
6943 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
6944 | ||
6945 | if (abbrev_number == 0) | |
6946 | return NULL; | |
6947 | ||
433df2d4 | 6948 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
6949 | if (!abbrev) |
6950 | { | |
3e43a32a MS |
6951 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
6952 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
6953 | } |
6954 | ||
6955 | return abbrev; | |
6956 | } | |
6957 | ||
93311388 DE |
6958 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6959 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
6960 | DIE. Any children of the skipped DIEs will also be skipped. */ |
6961 | ||
d521ce57 TT |
6962 | static const gdb_byte * |
6963 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 6964 | { |
dee91e82 | 6965 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
6966 | struct abbrev_info *abbrev; |
6967 | unsigned int bytes_read; | |
6968 | ||
6969 | while (1) | |
6970 | { | |
6971 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
6972 | if (abbrev == NULL) | |
6973 | return info_ptr + bytes_read; | |
6974 | else | |
dee91e82 | 6975 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
6976 | } |
6977 | } | |
6978 | ||
93311388 DE |
6979 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6980 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
6981 | abbrev corresponding to that skipped uleb128 should be passed in |
6982 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
6983 | children. */ | |
6984 | ||
d521ce57 TT |
6985 | static const gdb_byte * |
6986 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 6987 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
6988 | { |
6989 | unsigned int bytes_read; | |
6990 | struct attribute attr; | |
dee91e82 DE |
6991 | bfd *abfd = reader->abfd; |
6992 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 6993 | const gdb_byte *buffer = reader->buffer; |
f664829e | 6994 | const gdb_byte *buffer_end = reader->buffer_end; |
d521ce57 | 6995 | const gdb_byte *start_info_ptr = info_ptr; |
4bb7a0a7 DJ |
6996 | unsigned int form, i; |
6997 | ||
6998 | for (i = 0; i < abbrev->num_attrs; i++) | |
6999 | { | |
7000 | /* The only abbrev we care about is DW_AT_sibling. */ | |
7001 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
7002 | { | |
dee91e82 | 7003 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 7004 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
7005 | complaint (&symfile_complaints, |
7006 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 7007 | else |
b64f50a1 | 7008 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
7009 | } |
7010 | ||
7011 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
7012 | form = abbrev->attrs[i].form; | |
7013 | skip_attribute: | |
7014 | switch (form) | |
7015 | { | |
4bb7a0a7 | 7016 | case DW_FORM_ref_addr: |
ae411497 TT |
7017 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
7018 | and later it is offset sized. */ | |
7019 | if (cu->header.version == 2) | |
7020 | info_ptr += cu->header.addr_size; | |
7021 | else | |
7022 | info_ptr += cu->header.offset_size; | |
7023 | break; | |
36586728 TT |
7024 | case DW_FORM_GNU_ref_alt: |
7025 | info_ptr += cu->header.offset_size; | |
7026 | break; | |
ae411497 | 7027 | case DW_FORM_addr: |
4bb7a0a7 DJ |
7028 | info_ptr += cu->header.addr_size; |
7029 | break; | |
7030 | case DW_FORM_data1: | |
7031 | case DW_FORM_ref1: | |
7032 | case DW_FORM_flag: | |
7033 | info_ptr += 1; | |
7034 | break; | |
2dc7f7b3 TT |
7035 | case DW_FORM_flag_present: |
7036 | break; | |
4bb7a0a7 DJ |
7037 | case DW_FORM_data2: |
7038 | case DW_FORM_ref2: | |
7039 | info_ptr += 2; | |
7040 | break; | |
7041 | case DW_FORM_data4: | |
7042 | case DW_FORM_ref4: | |
7043 | info_ptr += 4; | |
7044 | break; | |
7045 | case DW_FORM_data8: | |
7046 | case DW_FORM_ref8: | |
55f1336d | 7047 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
7048 | info_ptr += 8; |
7049 | break; | |
7050 | case DW_FORM_string: | |
9b1c24c8 | 7051 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
7052 | info_ptr += bytes_read; |
7053 | break; | |
2dc7f7b3 | 7054 | case DW_FORM_sec_offset: |
4bb7a0a7 | 7055 | case DW_FORM_strp: |
36586728 | 7056 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
7057 | info_ptr += cu->header.offset_size; |
7058 | break; | |
2dc7f7b3 | 7059 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
7060 | case DW_FORM_block: |
7061 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7062 | info_ptr += bytes_read; | |
7063 | break; | |
7064 | case DW_FORM_block1: | |
7065 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
7066 | break; | |
7067 | case DW_FORM_block2: | |
7068 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
7069 | break; | |
7070 | case DW_FORM_block4: | |
7071 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
7072 | break; | |
7073 | case DW_FORM_sdata: | |
7074 | case DW_FORM_udata: | |
7075 | case DW_FORM_ref_udata: | |
3019eac3 DE |
7076 | case DW_FORM_GNU_addr_index: |
7077 | case DW_FORM_GNU_str_index: | |
d521ce57 | 7078 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
7079 | break; |
7080 | case DW_FORM_indirect: | |
7081 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7082 | info_ptr += bytes_read; | |
7083 | /* We need to continue parsing from here, so just go back to | |
7084 | the top. */ | |
7085 | goto skip_attribute; | |
7086 | ||
7087 | default: | |
3e43a32a MS |
7088 | error (_("Dwarf Error: Cannot handle %s " |
7089 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
7090 | dwarf_form_name (form), |
7091 | bfd_get_filename (abfd)); | |
7092 | } | |
7093 | } | |
7094 | ||
7095 | if (abbrev->has_children) | |
dee91e82 | 7096 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
7097 | else |
7098 | return info_ptr; | |
7099 | } | |
7100 | ||
93311388 | 7101 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 7102 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 7103 | |
d521ce57 | 7104 | static const gdb_byte * |
dee91e82 DE |
7105 | locate_pdi_sibling (const struct die_reader_specs *reader, |
7106 | struct partial_die_info *orig_pdi, | |
d521ce57 | 7107 | const gdb_byte *info_ptr) |
91c24f0a DC |
7108 | { |
7109 | /* Do we know the sibling already? */ | |
72bf9492 | 7110 | |
91c24f0a DC |
7111 | if (orig_pdi->sibling) |
7112 | return orig_pdi->sibling; | |
7113 | ||
7114 | /* Are there any children to deal with? */ | |
7115 | ||
7116 | if (!orig_pdi->has_children) | |
7117 | return info_ptr; | |
7118 | ||
4bb7a0a7 | 7119 | /* Skip the children the long way. */ |
91c24f0a | 7120 | |
dee91e82 | 7121 | return skip_children (reader, info_ptr); |
91c24f0a DC |
7122 | } |
7123 | ||
257e7a09 | 7124 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 7125 | not NULL. */ |
c906108c SS |
7126 | |
7127 | static void | |
257e7a09 YQ |
7128 | dwarf2_read_symtab (struct partial_symtab *self, |
7129 | struct objfile *objfile) | |
c906108c | 7130 | { |
257e7a09 | 7131 | if (self->readin) |
c906108c | 7132 | { |
442e4d9c | 7133 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 7134 | self->filename); |
442e4d9c YQ |
7135 | } |
7136 | else | |
7137 | { | |
7138 | if (info_verbose) | |
c906108c | 7139 | { |
442e4d9c | 7140 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 7141 | self->filename); |
442e4d9c | 7142 | gdb_flush (gdb_stdout); |
c906108c | 7143 | } |
c906108c | 7144 | |
442e4d9c YQ |
7145 | /* Restore our global data. */ |
7146 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10b3939b | 7147 | |
442e4d9c YQ |
7148 | /* If this psymtab is constructed from a debug-only objfile, the |
7149 | has_section_at_zero flag will not necessarily be correct. We | |
7150 | can get the correct value for this flag by looking at the data | |
7151 | associated with the (presumably stripped) associated objfile. */ | |
7152 | if (objfile->separate_debug_objfile_backlink) | |
7153 | { | |
7154 | struct dwarf2_per_objfile *dpo_backlink | |
7155 | = objfile_data (objfile->separate_debug_objfile_backlink, | |
7156 | dwarf2_objfile_data_key); | |
9a619af0 | 7157 | |
442e4d9c YQ |
7158 | dwarf2_per_objfile->has_section_at_zero |
7159 | = dpo_backlink->has_section_at_zero; | |
7160 | } | |
b2ab525c | 7161 | |
442e4d9c | 7162 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 7163 | |
257e7a09 | 7164 | psymtab_to_symtab_1 (self); |
c906108c | 7165 | |
442e4d9c YQ |
7166 | /* Finish up the debug error message. */ |
7167 | if (info_verbose) | |
7168 | printf_filtered (_("done.\n")); | |
c906108c | 7169 | } |
95554aad TT |
7170 | |
7171 | process_cu_includes (); | |
c906108c | 7172 | } |
9cdd5dbd DE |
7173 | \f |
7174 | /* Reading in full CUs. */ | |
c906108c | 7175 | |
10b3939b DJ |
7176 | /* Add PER_CU to the queue. */ |
7177 | ||
7178 | static void | |
95554aad TT |
7179 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7180 | enum language pretend_language) | |
10b3939b DJ |
7181 | { |
7182 | struct dwarf2_queue_item *item; | |
7183 | ||
7184 | per_cu->queued = 1; | |
7185 | item = xmalloc (sizeof (*item)); | |
7186 | item->per_cu = per_cu; | |
95554aad | 7187 | item->pretend_language = pretend_language; |
10b3939b DJ |
7188 | item->next = NULL; |
7189 | ||
7190 | if (dwarf2_queue == NULL) | |
7191 | dwarf2_queue = item; | |
7192 | else | |
7193 | dwarf2_queue_tail->next = item; | |
7194 | ||
7195 | dwarf2_queue_tail = item; | |
7196 | } | |
7197 | ||
89e63ee4 DE |
7198 | /* If PER_CU is not yet queued, add it to the queue. |
7199 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
7200 | dependency. | |
0907af0c | 7201 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
7202 | meaning either PER_CU is already queued or it is already loaded. |
7203 | ||
7204 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
7205 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
7206 | |
7207 | static int | |
89e63ee4 | 7208 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
7209 | struct dwarf2_per_cu_data *per_cu, |
7210 | enum language pretend_language) | |
7211 | { | |
7212 | /* We may arrive here during partial symbol reading, if we need full | |
7213 | DIEs to process an unusual case (e.g. template arguments). Do | |
7214 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
7215 | if (dwarf2_per_objfile->reading_partial_symbols) | |
7216 | { | |
7217 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
7218 | return 1; | |
7219 | return 0; | |
7220 | } | |
7221 | ||
7222 | /* Mark the dependence relation so that we don't flush PER_CU | |
7223 | too early. */ | |
89e63ee4 DE |
7224 | if (dependent_cu != NULL) |
7225 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
7226 | |
7227 | /* If it's already on the queue, we have nothing to do. */ | |
7228 | if (per_cu->queued) | |
7229 | return 0; | |
7230 | ||
7231 | /* If the compilation unit is already loaded, just mark it as | |
7232 | used. */ | |
7233 | if (per_cu->cu != NULL) | |
7234 | { | |
7235 | per_cu->cu->last_used = 0; | |
7236 | return 0; | |
7237 | } | |
7238 | ||
7239 | /* Add it to the queue. */ | |
7240 | queue_comp_unit (per_cu, pretend_language); | |
7241 | ||
7242 | return 1; | |
7243 | } | |
7244 | ||
10b3939b DJ |
7245 | /* Process the queue. */ |
7246 | ||
7247 | static void | |
a0f42c21 | 7248 | process_queue (void) |
10b3939b DJ |
7249 | { |
7250 | struct dwarf2_queue_item *item, *next_item; | |
7251 | ||
45cfd468 DE |
7252 | if (dwarf2_read_debug) |
7253 | { | |
7254 | fprintf_unfiltered (gdb_stdlog, | |
7255 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 7256 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
7257 | } |
7258 | ||
03dd20cc DJ |
7259 | /* The queue starts out with one item, but following a DIE reference |
7260 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
7261 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
7262 | { | |
9291a0cd TT |
7263 | if (dwarf2_per_objfile->using_index |
7264 | ? !item->per_cu->v.quick->symtab | |
7265 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
f4dc4d17 DE |
7266 | { |
7267 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
247f5c4f | 7268 | char buf[100]; |
f4dc4d17 | 7269 | |
247f5c4f | 7270 | if (per_cu->is_debug_types) |
f4dc4d17 | 7271 | { |
247f5c4f DE |
7272 | struct signatured_type *sig_type = |
7273 | (struct signatured_type *) per_cu; | |
7274 | ||
7275 | sprintf (buf, "TU %s at offset 0x%x", | |
7276 | hex_string (sig_type->signature), per_cu->offset.sect_off); | |
f4dc4d17 | 7277 | } |
247f5c4f DE |
7278 | else |
7279 | sprintf (buf, "CU at offset 0x%x", per_cu->offset.sect_off); | |
7280 | ||
7281 | if (dwarf2_read_debug) | |
7282 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); | |
f4dc4d17 DE |
7283 | |
7284 | if (per_cu->is_debug_types) | |
7285 | process_full_type_unit (per_cu, item->pretend_language); | |
7286 | else | |
7287 | process_full_comp_unit (per_cu, item->pretend_language); | |
7288 | ||
7289 | if (dwarf2_read_debug) | |
247f5c4f | 7290 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 7291 | } |
10b3939b DJ |
7292 | |
7293 | item->per_cu->queued = 0; | |
7294 | next_item = item->next; | |
7295 | xfree (item); | |
7296 | } | |
7297 | ||
7298 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
7299 | |
7300 | if (dwarf2_read_debug) | |
7301 | { | |
7302 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 7303 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 7304 | } |
10b3939b DJ |
7305 | } |
7306 | ||
7307 | /* Free all allocated queue entries. This function only releases anything if | |
7308 | an error was thrown; if the queue was processed then it would have been | |
7309 | freed as we went along. */ | |
7310 | ||
7311 | static void | |
7312 | dwarf2_release_queue (void *dummy) | |
7313 | { | |
7314 | struct dwarf2_queue_item *item, *last; | |
7315 | ||
7316 | item = dwarf2_queue; | |
7317 | while (item) | |
7318 | { | |
7319 | /* Anything still marked queued is likely to be in an | |
7320 | inconsistent state, so discard it. */ | |
7321 | if (item->per_cu->queued) | |
7322 | { | |
7323 | if (item->per_cu->cu != NULL) | |
dee91e82 | 7324 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
7325 | item->per_cu->queued = 0; |
7326 | } | |
7327 | ||
7328 | last = item; | |
7329 | item = item->next; | |
7330 | xfree (last); | |
7331 | } | |
7332 | ||
7333 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
7334 | } | |
7335 | ||
7336 | /* Read in full symbols for PST, and anything it depends on. */ | |
7337 | ||
c906108c | 7338 | static void |
fba45db2 | 7339 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 7340 | { |
10b3939b | 7341 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
7342 | int i; |
7343 | ||
95554aad TT |
7344 | if (pst->readin) |
7345 | return; | |
7346 | ||
aaa75496 | 7347 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
7348 | if (!pst->dependencies[i]->readin |
7349 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
7350 | { |
7351 | /* Inform about additional files that need to be read in. */ | |
7352 | if (info_verbose) | |
7353 | { | |
a3f17187 | 7354 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
7355 | fputs_filtered (" ", gdb_stdout); |
7356 | wrap_here (""); | |
7357 | fputs_filtered ("and ", gdb_stdout); | |
7358 | wrap_here (""); | |
7359 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 7360 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
7361 | gdb_flush (gdb_stdout); |
7362 | } | |
7363 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
7364 | } | |
7365 | ||
e38df1d0 | 7366 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
7367 | |
7368 | if (per_cu == NULL) | |
aaa75496 JB |
7369 | { |
7370 | /* It's an include file, no symbols to read for it. | |
7371 | Everything is in the parent symtab. */ | |
7372 | pst->readin = 1; | |
7373 | return; | |
7374 | } | |
c906108c | 7375 | |
a0f42c21 | 7376 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
7377 | } |
7378 | ||
dee91e82 DE |
7379 | /* Trivial hash function for die_info: the hash value of a DIE |
7380 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 7381 | |
dee91e82 DE |
7382 | static hashval_t |
7383 | die_hash (const void *item) | |
10b3939b | 7384 | { |
dee91e82 | 7385 | const struct die_info *die = item; |
6502dd73 | 7386 | |
dee91e82 DE |
7387 | return die->offset.sect_off; |
7388 | } | |
63d06c5c | 7389 | |
dee91e82 DE |
7390 | /* Trivial comparison function for die_info structures: two DIEs |
7391 | are equal if they have the same offset. */ | |
98bfdba5 | 7392 | |
dee91e82 DE |
7393 | static int |
7394 | die_eq (const void *item_lhs, const void *item_rhs) | |
7395 | { | |
7396 | const struct die_info *die_lhs = item_lhs; | |
7397 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 7398 | |
dee91e82 DE |
7399 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
7400 | } | |
c906108c | 7401 | |
dee91e82 DE |
7402 | /* die_reader_func for load_full_comp_unit. |
7403 | This is identical to read_signatured_type_reader, | |
7404 | but is kept separate for now. */ | |
c906108c | 7405 | |
dee91e82 DE |
7406 | static void |
7407 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7408 | const gdb_byte *info_ptr, |
dee91e82 DE |
7409 | struct die_info *comp_unit_die, |
7410 | int has_children, | |
7411 | void *data) | |
7412 | { | |
7413 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 7414 | enum language *language_ptr = data; |
6caca83c | 7415 | |
dee91e82 DE |
7416 | gdb_assert (cu->die_hash == NULL); |
7417 | cu->die_hash = | |
7418 | htab_create_alloc_ex (cu->header.length / 12, | |
7419 | die_hash, | |
7420 | die_eq, | |
7421 | NULL, | |
7422 | &cu->comp_unit_obstack, | |
7423 | hashtab_obstack_allocate, | |
7424 | dummy_obstack_deallocate); | |
e142c38c | 7425 | |
dee91e82 DE |
7426 | if (has_children) |
7427 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
7428 | &info_ptr, comp_unit_die); | |
7429 | cu->dies = comp_unit_die; | |
7430 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
7431 | |
7432 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 7433 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 7434 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
7435 | or we won't be able to build types correctly. |
7436 | Similarly, if we do not read the producer, we can not apply | |
7437 | producer-specific interpretation. */ | |
95554aad | 7438 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 7439 | } |
10b3939b | 7440 | |
dee91e82 | 7441 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 7442 | |
dee91e82 | 7443 | static void |
95554aad TT |
7444 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
7445 | enum language pretend_language) | |
dee91e82 | 7446 | { |
3019eac3 | 7447 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 7448 | |
f4dc4d17 DE |
7449 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
7450 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
7451 | } |
7452 | ||
3da10d80 KS |
7453 | /* Add a DIE to the delayed physname list. */ |
7454 | ||
7455 | static void | |
7456 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
7457 | const char *name, struct die_info *die, | |
7458 | struct dwarf2_cu *cu) | |
7459 | { | |
7460 | struct delayed_method_info mi; | |
7461 | mi.type = type; | |
7462 | mi.fnfield_index = fnfield_index; | |
7463 | mi.index = index; | |
7464 | mi.name = name; | |
7465 | mi.die = die; | |
7466 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
7467 | } | |
7468 | ||
7469 | /* A cleanup for freeing the delayed method list. */ | |
7470 | ||
7471 | static void | |
7472 | free_delayed_list (void *ptr) | |
7473 | { | |
7474 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
7475 | if (cu->method_list != NULL) | |
7476 | { | |
7477 | VEC_free (delayed_method_info, cu->method_list); | |
7478 | cu->method_list = NULL; | |
7479 | } | |
7480 | } | |
7481 | ||
7482 | /* Compute the physnames of any methods on the CU's method list. | |
7483 | ||
7484 | The computation of method physnames is delayed in order to avoid the | |
7485 | (bad) condition that one of the method's formal parameters is of an as yet | |
7486 | incomplete type. */ | |
7487 | ||
7488 | static void | |
7489 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
7490 | { | |
7491 | int i; | |
7492 | struct delayed_method_info *mi; | |
7493 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
7494 | { | |
1d06ead6 | 7495 | const char *physname; |
3da10d80 KS |
7496 | struct fn_fieldlist *fn_flp |
7497 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 7498 | physname = dwarf2_physname (mi->name, mi->die, cu); |
3da10d80 KS |
7499 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
7500 | } | |
7501 | } | |
7502 | ||
a766d390 DE |
7503 | /* Go objects should be embedded in a DW_TAG_module DIE, |
7504 | and it's not clear if/how imported objects will appear. | |
7505 | To keep Go support simple until that's worked out, | |
7506 | go back through what we've read and create something usable. | |
7507 | We could do this while processing each DIE, and feels kinda cleaner, | |
7508 | but that way is more invasive. | |
7509 | This is to, for example, allow the user to type "p var" or "b main" | |
7510 | without having to specify the package name, and allow lookups | |
7511 | of module.object to work in contexts that use the expression | |
7512 | parser. */ | |
7513 | ||
7514 | static void | |
7515 | fixup_go_packaging (struct dwarf2_cu *cu) | |
7516 | { | |
7517 | char *package_name = NULL; | |
7518 | struct pending *list; | |
7519 | int i; | |
7520 | ||
7521 | for (list = global_symbols; list != NULL; list = list->next) | |
7522 | { | |
7523 | for (i = 0; i < list->nsyms; ++i) | |
7524 | { | |
7525 | struct symbol *sym = list->symbol[i]; | |
7526 | ||
7527 | if (SYMBOL_LANGUAGE (sym) == language_go | |
7528 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
7529 | { | |
7530 | char *this_package_name = go_symbol_package_name (sym); | |
7531 | ||
7532 | if (this_package_name == NULL) | |
7533 | continue; | |
7534 | if (package_name == NULL) | |
7535 | package_name = this_package_name; | |
7536 | else | |
7537 | { | |
7538 | if (strcmp (package_name, this_package_name) != 0) | |
7539 | complaint (&symfile_complaints, | |
7540 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
210bbc17 | 7541 | (SYMBOL_SYMTAB (sym) |
05cba821 | 7542 | ? symtab_to_filename_for_display (SYMBOL_SYMTAB (sym)) |
4262abfb | 7543 | : objfile_name (cu->objfile)), |
a766d390 DE |
7544 | this_package_name, package_name); |
7545 | xfree (this_package_name); | |
7546 | } | |
7547 | } | |
7548 | } | |
7549 | } | |
7550 | ||
7551 | if (package_name != NULL) | |
7552 | { | |
7553 | struct objfile *objfile = cu->objfile; | |
10f0c4bb TT |
7554 | const char *saved_package_name = obstack_copy0 (&objfile->objfile_obstack, |
7555 | package_name, | |
7556 | strlen (package_name)); | |
a766d390 | 7557 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, |
86f62fd7 | 7558 | saved_package_name, objfile); |
a766d390 DE |
7559 | struct symbol *sym; |
7560 | ||
7561 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7562 | ||
e623cf5d | 7563 | sym = allocate_symbol (objfile); |
f85f34ed | 7564 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
7565 | SYMBOL_SET_NAMES (sym, saved_package_name, |
7566 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
7567 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
7568 | e.g., "main" finds the "main" module and not C's main(). */ | |
7569 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 7570 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
7571 | SYMBOL_TYPE (sym) = type; |
7572 | ||
7573 | add_symbol_to_list (sym, &global_symbols); | |
7574 | ||
7575 | xfree (package_name); | |
7576 | } | |
7577 | } | |
7578 | ||
95554aad TT |
7579 | /* Return the symtab for PER_CU. This works properly regardless of |
7580 | whether we're using the index or psymtabs. */ | |
7581 | ||
7582 | static struct symtab * | |
7583 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
7584 | { | |
7585 | return (dwarf2_per_objfile->using_index | |
7586 | ? per_cu->v.quick->symtab | |
7587 | : per_cu->v.psymtab->symtab); | |
7588 | } | |
7589 | ||
7590 | /* A helper function for computing the list of all symbol tables | |
7591 | included by PER_CU. */ | |
7592 | ||
7593 | static void | |
ec94af83 DE |
7594 | recursively_compute_inclusions (VEC (symtab_ptr) **result, |
7595 | htab_t all_children, htab_t all_type_symtabs, | |
f9125b6c TT |
7596 | struct dwarf2_per_cu_data *per_cu, |
7597 | struct symtab *immediate_parent) | |
95554aad TT |
7598 | { |
7599 | void **slot; | |
7600 | int ix; | |
ec94af83 | 7601 | struct symtab *symtab; |
95554aad TT |
7602 | struct dwarf2_per_cu_data *iter; |
7603 | ||
7604 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
7605 | if (*slot != NULL) | |
7606 | { | |
7607 | /* This inclusion and its children have been processed. */ | |
7608 | return; | |
7609 | } | |
7610 | ||
7611 | *slot = per_cu; | |
7612 | /* Only add a CU if it has a symbol table. */ | |
ec94af83 DE |
7613 | symtab = get_symtab (per_cu); |
7614 | if (symtab != NULL) | |
7615 | { | |
7616 | /* If this is a type unit only add its symbol table if we haven't | |
7617 | seen it yet (type unit per_cu's can share symtabs). */ | |
7618 | if (per_cu->is_debug_types) | |
7619 | { | |
7620 | slot = htab_find_slot (all_type_symtabs, symtab, INSERT); | |
7621 | if (*slot == NULL) | |
7622 | { | |
7623 | *slot = symtab; | |
7624 | VEC_safe_push (symtab_ptr, *result, symtab); | |
f9125b6c TT |
7625 | if (symtab->user == NULL) |
7626 | symtab->user = immediate_parent; | |
ec94af83 DE |
7627 | } |
7628 | } | |
7629 | else | |
f9125b6c TT |
7630 | { |
7631 | VEC_safe_push (symtab_ptr, *result, symtab); | |
7632 | if (symtab->user == NULL) | |
7633 | symtab->user = immediate_parent; | |
7634 | } | |
ec94af83 | 7635 | } |
95554aad TT |
7636 | |
7637 | for (ix = 0; | |
796a7ff8 | 7638 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 7639 | ++ix) |
ec94af83 DE |
7640 | { |
7641 | recursively_compute_inclusions (result, all_children, | |
f9125b6c | 7642 | all_type_symtabs, iter, symtab); |
ec94af83 | 7643 | } |
95554aad TT |
7644 | } |
7645 | ||
7646 | /* Compute the symtab 'includes' fields for the symtab related to | |
7647 | PER_CU. */ | |
7648 | ||
7649 | static void | |
7650 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
7651 | { | |
f4dc4d17 DE |
7652 | gdb_assert (! per_cu->is_debug_types); |
7653 | ||
796a7ff8 | 7654 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
7655 | { |
7656 | int ix, len; | |
ec94af83 DE |
7657 | struct dwarf2_per_cu_data *per_cu_iter; |
7658 | struct symtab *symtab_iter; | |
7659 | VEC (symtab_ptr) *result_symtabs = NULL; | |
7660 | htab_t all_children, all_type_symtabs; | |
95554aad TT |
7661 | struct symtab *symtab = get_symtab (per_cu); |
7662 | ||
7663 | /* If we don't have a symtab, we can just skip this case. */ | |
7664 | if (symtab == NULL) | |
7665 | return; | |
7666 | ||
7667 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
7668 | NULL, xcalloc, xfree); | |
ec94af83 DE |
7669 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
7670 | NULL, xcalloc, xfree); | |
95554aad TT |
7671 | |
7672 | for (ix = 0; | |
796a7ff8 | 7673 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 7674 | ix, per_cu_iter); |
95554aad | 7675 | ++ix) |
ec94af83 DE |
7676 | { |
7677 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c TT |
7678 | all_type_symtabs, per_cu_iter, |
7679 | symtab); | |
ec94af83 | 7680 | } |
95554aad | 7681 | |
ec94af83 DE |
7682 | /* Now we have a transitive closure of all the included symtabs. */ |
7683 | len = VEC_length (symtab_ptr, result_symtabs); | |
95554aad TT |
7684 | symtab->includes |
7685 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
7686 | (len + 1) * sizeof (struct symtab *)); | |
7687 | for (ix = 0; | |
ec94af83 | 7688 | VEC_iterate (symtab_ptr, result_symtabs, ix, symtab_iter); |
95554aad | 7689 | ++ix) |
ec94af83 | 7690 | symtab->includes[ix] = symtab_iter; |
95554aad TT |
7691 | symtab->includes[len] = NULL; |
7692 | ||
ec94af83 | 7693 | VEC_free (symtab_ptr, result_symtabs); |
95554aad | 7694 | htab_delete (all_children); |
ec94af83 | 7695 | htab_delete (all_type_symtabs); |
95554aad TT |
7696 | } |
7697 | } | |
7698 | ||
7699 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
7700 | read. */ | |
7701 | ||
7702 | static void | |
7703 | process_cu_includes (void) | |
7704 | { | |
7705 | int ix; | |
7706 | struct dwarf2_per_cu_data *iter; | |
7707 | ||
7708 | for (ix = 0; | |
7709 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
7710 | ix, iter); | |
7711 | ++ix) | |
f4dc4d17 DE |
7712 | { |
7713 | if (! iter->is_debug_types) | |
7714 | compute_symtab_includes (iter); | |
7715 | } | |
95554aad TT |
7716 | |
7717 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
7718 | } | |
7719 | ||
9cdd5dbd | 7720 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
7721 | already been loaded into memory. */ |
7722 | ||
7723 | static void | |
95554aad TT |
7724 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7725 | enum language pretend_language) | |
10b3939b | 7726 | { |
10b3939b | 7727 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 7728 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
7729 | CORE_ADDR lowpc, highpc; |
7730 | struct symtab *symtab; | |
3da10d80 | 7731 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 7732 | CORE_ADDR baseaddr; |
4359dff1 | 7733 | struct block *static_block; |
10b3939b DJ |
7734 | |
7735 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7736 | ||
10b3939b DJ |
7737 | buildsym_init (); |
7738 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 7739 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
7740 | |
7741 | cu->list_in_scope = &file_symbols; | |
c906108c | 7742 | |
95554aad TT |
7743 | cu->language = pretend_language; |
7744 | cu->language_defn = language_def (cu->language); | |
7745 | ||
c906108c | 7746 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 7747 | process_die (cu->dies, cu); |
c906108c | 7748 | |
a766d390 DE |
7749 | /* For now fudge the Go package. */ |
7750 | if (cu->language == language_go) | |
7751 | fixup_go_packaging (cu); | |
7752 | ||
3da10d80 KS |
7753 | /* Now that we have processed all the DIEs in the CU, all the types |
7754 | should be complete, and it should now be safe to compute all of the | |
7755 | physnames. */ | |
7756 | compute_delayed_physnames (cu); | |
7757 | do_cleanups (delayed_list_cleanup); | |
7758 | ||
fae299cd DC |
7759 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
7760 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
7761 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 7762 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 7763 | |
36586728 | 7764 | static_block |
ff546935 | 7765 | = end_symtab_get_static_block (highpc + baseaddr, objfile, 0, 1); |
4359dff1 JK |
7766 | |
7767 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
7768 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
7769 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
7770 | addrmap to help ensure it has an accurate map of pc values belonging to | |
7771 | this comp unit. */ | |
7772 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
7773 | ||
7774 | symtab = end_symtab_from_static_block (static_block, objfile, | |
7775 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 7776 | |
8be455d7 | 7777 | if (symtab != NULL) |
c906108c | 7778 | { |
df15bd07 | 7779 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 7780 | |
8be455d7 JK |
7781 | /* Set symtab language to language from DW_AT_language. If the |
7782 | compilation is from a C file generated by language preprocessors, do | |
7783 | not set the language if it was already deduced by start_subfile. */ | |
7784 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7785 | symtab->language = cu->language; | |
7786 | ||
7787 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
7788 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
7789 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
7790 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
7791 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
7792 | |
7793 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
7794 | needed, it would be wrong due to missing DW_AT_producer there. | |
7795 | ||
7796 | Still one can confuse GDB by using non-standard GCC compilation | |
7797 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
7798 | */ | |
ab260dad | 7799 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 7800 | symtab->locations_valid = 1; |
e0d00bc7 JK |
7801 | |
7802 | if (gcc_4_minor >= 5) | |
7803 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
7804 | |
7805 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 7806 | } |
9291a0cd TT |
7807 | |
7808 | if (dwarf2_per_objfile->using_index) | |
7809 | per_cu->v.quick->symtab = symtab; | |
7810 | else | |
7811 | { | |
7812 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7813 | pst->symtab = symtab; | |
7814 | pst->readin = 1; | |
7815 | } | |
c906108c | 7816 | |
95554aad TT |
7817 | /* Push it for inclusion processing later. */ |
7818 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
7819 | ||
c906108c | 7820 | do_cleanups (back_to); |
f4dc4d17 | 7821 | } |
45cfd468 | 7822 | |
f4dc4d17 DE |
7823 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
7824 | already been loaded into memory. */ | |
7825 | ||
7826 | static void | |
7827 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
7828 | enum language pretend_language) | |
7829 | { | |
7830 | struct dwarf2_cu *cu = per_cu->cu; | |
7831 | struct objfile *objfile = per_cu->objfile; | |
7832 | struct symtab *symtab; | |
7833 | struct cleanup *back_to, *delayed_list_cleanup; | |
0186c6a7 DE |
7834 | struct signatured_type *sig_type; |
7835 | ||
7836 | gdb_assert (per_cu->is_debug_types); | |
7837 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
7838 | |
7839 | buildsym_init (); | |
7840 | back_to = make_cleanup (really_free_pendings, NULL); | |
7841 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
7842 | ||
7843 | cu->list_in_scope = &file_symbols; | |
7844 | ||
7845 | cu->language = pretend_language; | |
7846 | cu->language_defn = language_def (cu->language); | |
7847 | ||
7848 | /* The symbol tables are set up in read_type_unit_scope. */ | |
7849 | process_die (cu->dies, cu); | |
7850 | ||
7851 | /* For now fudge the Go package. */ | |
7852 | if (cu->language == language_go) | |
7853 | fixup_go_packaging (cu); | |
7854 | ||
7855 | /* Now that we have processed all the DIEs in the CU, all the types | |
7856 | should be complete, and it should now be safe to compute all of the | |
7857 | physnames. */ | |
7858 | compute_delayed_physnames (cu); | |
7859 | do_cleanups (delayed_list_cleanup); | |
7860 | ||
7861 | /* TUs share symbol tables. | |
7862 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
7863 | of it with end_expandable_symtab. Otherwise, complete the addition of |
7864 | this TU's symbols to the existing symtab. */ | |
0186c6a7 | 7865 | if (sig_type->type_unit_group->primary_symtab == NULL) |
45cfd468 | 7866 | { |
f4dc4d17 | 7867 | symtab = end_expandable_symtab (0, objfile, SECT_OFF_TEXT (objfile)); |
0186c6a7 | 7868 | sig_type->type_unit_group->primary_symtab = symtab; |
f4dc4d17 DE |
7869 | |
7870 | if (symtab != NULL) | |
7871 | { | |
7872 | /* Set symtab language to language from DW_AT_language. If the | |
7873 | compilation is from a C file generated by language preprocessors, | |
7874 | do not set the language if it was already deduced by | |
7875 | start_subfile. */ | |
7876 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7877 | symtab->language = cu->language; | |
7878 | } | |
7879 | } | |
7880 | else | |
7881 | { | |
7882 | augment_type_symtab (objfile, | |
0186c6a7 DE |
7883 | sig_type->type_unit_group->primary_symtab); |
7884 | symtab = sig_type->type_unit_group->primary_symtab; | |
f4dc4d17 DE |
7885 | } |
7886 | ||
7887 | if (dwarf2_per_objfile->using_index) | |
7888 | per_cu->v.quick->symtab = symtab; | |
7889 | else | |
7890 | { | |
7891 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7892 | pst->symtab = symtab; | |
7893 | pst->readin = 1; | |
45cfd468 | 7894 | } |
f4dc4d17 DE |
7895 | |
7896 | do_cleanups (back_to); | |
c906108c SS |
7897 | } |
7898 | ||
95554aad TT |
7899 | /* Process an imported unit DIE. */ |
7900 | ||
7901 | static void | |
7902 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
7903 | { | |
7904 | struct attribute *attr; | |
7905 | ||
f4dc4d17 DE |
7906 | /* For now we don't handle imported units in type units. */ |
7907 | if (cu->per_cu->is_debug_types) | |
7908 | { | |
7909 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7910 | " supported in type units [in module %s]"), | |
4262abfb | 7911 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
7912 | } |
7913 | ||
95554aad TT |
7914 | attr = dwarf2_attr (die, DW_AT_import, cu); |
7915 | if (attr != NULL) | |
7916 | { | |
7917 | struct dwarf2_per_cu_data *per_cu; | |
7918 | struct symtab *imported_symtab; | |
7919 | sect_offset offset; | |
36586728 | 7920 | int is_dwz; |
95554aad TT |
7921 | |
7922 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
7923 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
7924 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad | 7925 | |
69d751e3 | 7926 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
7927 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
7928 | load_full_comp_unit (per_cu, cu->language); | |
7929 | ||
796a7ff8 | 7930 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
7931 | per_cu); |
7932 | } | |
7933 | } | |
7934 | ||
c906108c SS |
7935 | /* Process a die and its children. */ |
7936 | ||
7937 | static void | |
e7c27a73 | 7938 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7939 | { |
7940 | switch (die->tag) | |
7941 | { | |
7942 | case DW_TAG_padding: | |
7943 | break; | |
7944 | case DW_TAG_compile_unit: | |
95554aad | 7945 | case DW_TAG_partial_unit: |
e7c27a73 | 7946 | read_file_scope (die, cu); |
c906108c | 7947 | break; |
348e048f DE |
7948 | case DW_TAG_type_unit: |
7949 | read_type_unit_scope (die, cu); | |
7950 | break; | |
c906108c | 7951 | case DW_TAG_subprogram: |
c906108c | 7952 | case DW_TAG_inlined_subroutine: |
edb3359d | 7953 | read_func_scope (die, cu); |
c906108c SS |
7954 | break; |
7955 | case DW_TAG_lexical_block: | |
14898363 L |
7956 | case DW_TAG_try_block: |
7957 | case DW_TAG_catch_block: | |
e7c27a73 | 7958 | read_lexical_block_scope (die, cu); |
c906108c | 7959 | break; |
96408a79 SA |
7960 | case DW_TAG_GNU_call_site: |
7961 | read_call_site_scope (die, cu); | |
7962 | break; | |
c906108c | 7963 | case DW_TAG_class_type: |
680b30c7 | 7964 | case DW_TAG_interface_type: |
c906108c SS |
7965 | case DW_TAG_structure_type: |
7966 | case DW_TAG_union_type: | |
134d01f1 | 7967 | process_structure_scope (die, cu); |
c906108c SS |
7968 | break; |
7969 | case DW_TAG_enumeration_type: | |
134d01f1 | 7970 | process_enumeration_scope (die, cu); |
c906108c | 7971 | break; |
134d01f1 | 7972 | |
f792889a DJ |
7973 | /* These dies have a type, but processing them does not create |
7974 | a symbol or recurse to process the children. Therefore we can | |
7975 | read them on-demand through read_type_die. */ | |
c906108c | 7976 | case DW_TAG_subroutine_type: |
72019c9c | 7977 | case DW_TAG_set_type: |
c906108c | 7978 | case DW_TAG_array_type: |
c906108c | 7979 | case DW_TAG_pointer_type: |
c906108c | 7980 | case DW_TAG_ptr_to_member_type: |
c906108c | 7981 | case DW_TAG_reference_type: |
c906108c | 7982 | case DW_TAG_string_type: |
c906108c | 7983 | break; |
134d01f1 | 7984 | |
c906108c | 7985 | case DW_TAG_base_type: |
a02abb62 | 7986 | case DW_TAG_subrange_type: |
cb249c71 | 7987 | case DW_TAG_typedef: |
134d01f1 DJ |
7988 | /* Add a typedef symbol for the type definition, if it has a |
7989 | DW_AT_name. */ | |
f792889a | 7990 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 7991 | break; |
c906108c | 7992 | case DW_TAG_common_block: |
e7c27a73 | 7993 | read_common_block (die, cu); |
c906108c SS |
7994 | break; |
7995 | case DW_TAG_common_inclusion: | |
7996 | break; | |
d9fa45fe | 7997 | case DW_TAG_namespace: |
4d4ec4e5 | 7998 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 7999 | read_namespace (die, cu); |
d9fa45fe | 8000 | break; |
5d7cb8df | 8001 | case DW_TAG_module: |
4d4ec4e5 | 8002 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
8003 | read_module (die, cu); |
8004 | break; | |
d9fa45fe DC |
8005 | case DW_TAG_imported_declaration: |
8006 | case DW_TAG_imported_module: | |
4d4ec4e5 | 8007 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
8008 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
8009 | || cu->language != language_fortran)) | |
8010 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
8011 | dwarf_tag_name (die->tag)); | |
8012 | read_import_statement (die, cu); | |
d9fa45fe | 8013 | break; |
95554aad TT |
8014 | |
8015 | case DW_TAG_imported_unit: | |
8016 | process_imported_unit_die (die, cu); | |
8017 | break; | |
8018 | ||
c906108c | 8019 | default: |
e7c27a73 | 8020 | new_symbol (die, NULL, cu); |
c906108c SS |
8021 | break; |
8022 | } | |
8023 | } | |
ca69b9e6 DE |
8024 | \f |
8025 | /* DWARF name computation. */ | |
c906108c | 8026 | |
94af9270 KS |
8027 | /* A helper function for dwarf2_compute_name which determines whether DIE |
8028 | needs to have the name of the scope prepended to the name listed in the | |
8029 | die. */ | |
8030 | ||
8031 | static int | |
8032 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8033 | { | |
1c809c68 TT |
8034 | struct attribute *attr; |
8035 | ||
94af9270 KS |
8036 | switch (die->tag) |
8037 | { | |
8038 | case DW_TAG_namespace: | |
8039 | case DW_TAG_typedef: | |
8040 | case DW_TAG_class_type: | |
8041 | case DW_TAG_interface_type: | |
8042 | case DW_TAG_structure_type: | |
8043 | case DW_TAG_union_type: | |
8044 | case DW_TAG_enumeration_type: | |
8045 | case DW_TAG_enumerator: | |
8046 | case DW_TAG_subprogram: | |
8047 | case DW_TAG_member: | |
8048 | return 1; | |
8049 | ||
8050 | case DW_TAG_variable: | |
c2b0a229 | 8051 | case DW_TAG_constant: |
94af9270 KS |
8052 | /* We only need to prefix "globally" visible variables. These include |
8053 | any variable marked with DW_AT_external or any variable that | |
8054 | lives in a namespace. [Variables in anonymous namespaces | |
8055 | require prefixing, but they are not DW_AT_external.] */ | |
8056 | ||
8057 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
8058 | { | |
8059 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 8060 | |
94af9270 KS |
8061 | return die_needs_namespace (die_specification (die, &spec_cu), |
8062 | spec_cu); | |
8063 | } | |
8064 | ||
1c809c68 | 8065 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
8066 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
8067 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
8068 | return 0; |
8069 | /* A variable in a lexical block of some kind does not need a | |
8070 | namespace, even though in C++ such variables may be external | |
8071 | and have a mangled name. */ | |
8072 | if (die->parent->tag == DW_TAG_lexical_block | |
8073 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
8074 | || die->parent->tag == DW_TAG_catch_block |
8075 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
8076 | return 0; |
8077 | return 1; | |
94af9270 KS |
8078 | |
8079 | default: | |
8080 | return 0; | |
8081 | } | |
8082 | } | |
8083 | ||
98bfdba5 PA |
8084 | /* Retrieve the last character from a mem_file. */ |
8085 | ||
8086 | static void | |
8087 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
8088 | { | |
8089 | char *last_char_p = (char *) object; | |
8090 | ||
8091 | if (length > 0) | |
8092 | *last_char_p = buffer[length - 1]; | |
8093 | } | |
8094 | ||
94af9270 | 8095 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
8096 | compute the physname for the object, which include a method's: |
8097 | - formal parameters (C++/Java), | |
8098 | - receiver type (Go), | |
8099 | - return type (Java). | |
8100 | ||
8101 | The term "physname" is a bit confusing. | |
8102 | For C++, for example, it is the demangled name. | |
8103 | For Go, for example, it's the mangled name. | |
94af9270 | 8104 | |
af6b7be1 JB |
8105 | For Ada, return the DIE's linkage name rather than the fully qualified |
8106 | name. PHYSNAME is ignored.. | |
8107 | ||
94af9270 KS |
8108 | The result is allocated on the objfile_obstack and canonicalized. */ |
8109 | ||
8110 | static const char * | |
15d034d0 TT |
8111 | dwarf2_compute_name (const char *name, |
8112 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
8113 | int physname) |
8114 | { | |
bb5ed363 DE |
8115 | struct objfile *objfile = cu->objfile; |
8116 | ||
94af9270 KS |
8117 | if (name == NULL) |
8118 | name = dwarf2_name (die, cu); | |
8119 | ||
f55ee35c JK |
8120 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
8121 | compute it by typename_concat inside GDB. */ | |
8122 | if (cu->language == language_ada | |
8123 | || (cu->language == language_fortran && physname)) | |
8124 | { | |
8125 | /* For Ada unit, we prefer the linkage name over the name, as | |
8126 | the former contains the exported name, which the user expects | |
8127 | to be able to reference. Ideally, we want the user to be able | |
8128 | to reference this entity using either natural or linkage name, | |
8129 | but we haven't started looking at this enhancement yet. */ | |
8130 | struct attribute *attr; | |
8131 | ||
8132 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8133 | if (attr == NULL) | |
8134 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8135 | if (attr && DW_STRING (attr)) | |
8136 | return DW_STRING (attr); | |
8137 | } | |
8138 | ||
94af9270 KS |
8139 | /* These are the only languages we know how to qualify names in. */ |
8140 | if (name != NULL | |
f55ee35c JK |
8141 | && (cu->language == language_cplus || cu->language == language_java |
8142 | || cu->language == language_fortran)) | |
94af9270 KS |
8143 | { |
8144 | if (die_needs_namespace (die, cu)) | |
8145 | { | |
8146 | long length; | |
0d5cff50 | 8147 | const char *prefix; |
94af9270 KS |
8148 | struct ui_file *buf; |
8149 | ||
8150 | prefix = determine_prefix (die, cu); | |
8151 | buf = mem_fileopen (); | |
8152 | if (*prefix != '\0') | |
8153 | { | |
f55ee35c JK |
8154 | char *prefixed_name = typename_concat (NULL, prefix, name, |
8155 | physname, cu); | |
9a619af0 | 8156 | |
94af9270 KS |
8157 | fputs_unfiltered (prefixed_name, buf); |
8158 | xfree (prefixed_name); | |
8159 | } | |
8160 | else | |
62d5b8da | 8161 | fputs_unfiltered (name, buf); |
94af9270 | 8162 | |
98bfdba5 PA |
8163 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
8164 | as children with DW_TAG_template_type_param or | |
8165 | DW_TAG_value_type_param. If the latter, add them to the name | |
8166 | here. If the name already has template parameters, then | |
8167 | skip this step; some versions of GCC emit both, and | |
8168 | it is more efficient to use the pre-computed name. | |
8169 | ||
8170 | Something to keep in mind about this process: it is very | |
8171 | unlikely, or in some cases downright impossible, to produce | |
8172 | something that will match the mangled name of a function. | |
8173 | If the definition of the function has the same debug info, | |
8174 | we should be able to match up with it anyway. But fallbacks | |
8175 | using the minimal symbol, for instance to find a method | |
8176 | implemented in a stripped copy of libstdc++, will not work. | |
8177 | If we do not have debug info for the definition, we will have to | |
8178 | match them up some other way. | |
8179 | ||
8180 | When we do name matching there is a related problem with function | |
8181 | templates; two instantiated function templates are allowed to | |
8182 | differ only by their return types, which we do not add here. */ | |
8183 | ||
8184 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
8185 | { | |
8186 | struct attribute *attr; | |
8187 | struct die_info *child; | |
8188 | int first = 1; | |
8189 | ||
8190 | die->building_fullname = 1; | |
8191 | ||
8192 | for (child = die->child; child != NULL; child = child->sibling) | |
8193 | { | |
8194 | struct type *type; | |
12df843f | 8195 | LONGEST value; |
d521ce57 | 8196 | const gdb_byte *bytes; |
98bfdba5 PA |
8197 | struct dwarf2_locexpr_baton *baton; |
8198 | struct value *v; | |
8199 | ||
8200 | if (child->tag != DW_TAG_template_type_param | |
8201 | && child->tag != DW_TAG_template_value_param) | |
8202 | continue; | |
8203 | ||
8204 | if (first) | |
8205 | { | |
8206 | fputs_unfiltered ("<", buf); | |
8207 | first = 0; | |
8208 | } | |
8209 | else | |
8210 | fputs_unfiltered (", ", buf); | |
8211 | ||
8212 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
8213 | if (attr == NULL) | |
8214 | { | |
8215 | complaint (&symfile_complaints, | |
8216 | _("template parameter missing DW_AT_type")); | |
8217 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
8218 | continue; | |
8219 | } | |
8220 | type = die_type (child, cu); | |
8221 | ||
8222 | if (child->tag == DW_TAG_template_type_param) | |
8223 | { | |
79d43c61 | 8224 | c_print_type (type, "", buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
8225 | continue; |
8226 | } | |
8227 | ||
8228 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
8229 | if (attr == NULL) | |
8230 | { | |
8231 | complaint (&symfile_complaints, | |
3e43a32a MS |
8232 | _("template parameter missing " |
8233 | "DW_AT_const_value")); | |
98bfdba5 PA |
8234 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
8235 | continue; | |
8236 | } | |
8237 | ||
8238 | dwarf2_const_value_attr (attr, type, name, | |
8239 | &cu->comp_unit_obstack, cu, | |
8240 | &value, &bytes, &baton); | |
8241 | ||
8242 | if (TYPE_NOSIGN (type)) | |
8243 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
8244 | changed, this can use value_print instead. */ | |
8245 | c_printchar (value, type, buf); | |
8246 | else | |
8247 | { | |
8248 | struct value_print_options opts; | |
8249 | ||
8250 | if (baton != NULL) | |
8251 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
8252 | baton->data, | |
8253 | baton->size, | |
8254 | baton->per_cu); | |
8255 | else if (bytes != NULL) | |
8256 | { | |
8257 | v = allocate_value (type); | |
8258 | memcpy (value_contents_writeable (v), bytes, | |
8259 | TYPE_LENGTH (type)); | |
8260 | } | |
8261 | else | |
8262 | v = value_from_longest (type, value); | |
8263 | ||
3e43a32a MS |
8264 | /* Specify decimal so that we do not depend on |
8265 | the radix. */ | |
98bfdba5 PA |
8266 | get_formatted_print_options (&opts, 'd'); |
8267 | opts.raw = 1; | |
8268 | value_print (v, buf, &opts); | |
8269 | release_value (v); | |
8270 | value_free (v); | |
8271 | } | |
8272 | } | |
8273 | ||
8274 | die->building_fullname = 0; | |
8275 | ||
8276 | if (!first) | |
8277 | { | |
8278 | /* Close the argument list, with a space if necessary | |
8279 | (nested templates). */ | |
8280 | char last_char = '\0'; | |
8281 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
8282 | if (last_char == '>') | |
8283 | fputs_unfiltered (" >", buf); | |
8284 | else | |
8285 | fputs_unfiltered (">", buf); | |
8286 | } | |
8287 | } | |
8288 | ||
94af9270 KS |
8289 | /* For Java and C++ methods, append formal parameter type |
8290 | information, if PHYSNAME. */ | |
6e70227d | 8291 | |
94af9270 KS |
8292 | if (physname && die->tag == DW_TAG_subprogram |
8293 | && (cu->language == language_cplus | |
8294 | || cu->language == language_java)) | |
8295 | { | |
8296 | struct type *type = read_type_die (die, cu); | |
8297 | ||
79d43c61 TT |
8298 | c_type_print_args (type, buf, 1, cu->language, |
8299 | &type_print_raw_options); | |
94af9270 KS |
8300 | |
8301 | if (cu->language == language_java) | |
8302 | { | |
8303 | /* For java, we must append the return type to method | |
0963b4bd | 8304 | names. */ |
94af9270 KS |
8305 | if (die->tag == DW_TAG_subprogram) |
8306 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
79d43c61 | 8307 | 0, 0, &type_print_raw_options); |
94af9270 KS |
8308 | } |
8309 | else if (cu->language == language_cplus) | |
8310 | { | |
60430eff DJ |
8311 | /* Assume that an artificial first parameter is |
8312 | "this", but do not crash if it is not. RealView | |
8313 | marks unnamed (and thus unused) parameters as | |
8314 | artificial; there is no way to differentiate | |
8315 | the two cases. */ | |
94af9270 KS |
8316 | if (TYPE_NFIELDS (type) > 0 |
8317 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 8318 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
8319 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
8320 | 0)))) | |
94af9270 KS |
8321 | fputs_unfiltered (" const", buf); |
8322 | } | |
8323 | } | |
8324 | ||
bb5ed363 | 8325 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
8326 | &length); |
8327 | ui_file_delete (buf); | |
8328 | ||
8329 | if (cu->language == language_cplus) | |
8330 | { | |
15d034d0 | 8331 | const char *cname |
94af9270 | 8332 | = dwarf2_canonicalize_name (name, cu, |
bb5ed363 | 8333 | &objfile->objfile_obstack); |
9a619af0 | 8334 | |
94af9270 KS |
8335 | if (cname != NULL) |
8336 | name = cname; | |
8337 | } | |
8338 | } | |
8339 | } | |
8340 | ||
8341 | return name; | |
8342 | } | |
8343 | ||
0114d602 DJ |
8344 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
8345 | If scope qualifiers are appropriate they will be added. The result | |
8346 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
8347 | not have a name. NAME may either be from a previous call to |
8348 | dwarf2_name or NULL. | |
8349 | ||
0963b4bd | 8350 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
8351 | |
8352 | static const char * | |
15d034d0 | 8353 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 8354 | { |
94af9270 KS |
8355 | return dwarf2_compute_name (name, die, cu, 0); |
8356 | } | |
0114d602 | 8357 | |
94af9270 KS |
8358 | /* Construct a physname for the given DIE in CU. NAME may either be |
8359 | from a previous call to dwarf2_name or NULL. The result will be | |
8360 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
8361 | name. | |
0114d602 | 8362 | |
94af9270 | 8363 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 8364 | |
94af9270 | 8365 | static const char * |
15d034d0 | 8366 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 8367 | { |
bb5ed363 | 8368 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
8369 | struct attribute *attr; |
8370 | const char *retval, *mangled = NULL, *canon = NULL; | |
8371 | struct cleanup *back_to; | |
8372 | int need_copy = 1; | |
8373 | ||
8374 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
8375 | on its own. */ | |
8376 | if (!die_needs_namespace (die, cu)) | |
8377 | return dwarf2_compute_name (name, die, cu, 1); | |
8378 | ||
8379 | back_to = make_cleanup (null_cleanup, NULL); | |
8380 | ||
8381 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8382 | if (!attr) | |
8383 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8384 | ||
8385 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
8386 | has computed. */ | |
8387 | if (attr && DW_STRING (attr)) | |
8388 | { | |
8389 | char *demangled; | |
8390 | ||
8391 | mangled = DW_STRING (attr); | |
8392 | ||
8393 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
8394 | type. It is easier for GDB users to search for such functions as | |
8395 | `name(params)' than `long name(params)'. In such case the minimal | |
8396 | symbol names do not match the full symbol names but for template | |
8397 | functions there is never a need to look up their definition from their | |
8398 | declaration so the only disadvantage remains the minimal symbol | |
8399 | variant `long name(params)' does not have the proper inferior type. | |
8400 | */ | |
8401 | ||
a766d390 DE |
8402 | if (cu->language == language_go) |
8403 | { | |
8404 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
8405 | new_symbol_full assumes we return the mangled name. | |
8406 | This just undoes that lie until things are cleaned up. */ | |
8407 | demangled = NULL; | |
8408 | } | |
8409 | else | |
8410 | { | |
8de20a37 TT |
8411 | demangled = gdb_demangle (mangled, |
8412 | (DMGL_PARAMS | DMGL_ANSI | |
8413 | | (cu->language == language_java | |
8414 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
8415 | : DMGL_RET_DROP))); | |
a766d390 | 8416 | } |
900e11f9 JK |
8417 | if (demangled) |
8418 | { | |
8419 | make_cleanup (xfree, demangled); | |
8420 | canon = demangled; | |
8421 | } | |
8422 | else | |
8423 | { | |
8424 | canon = mangled; | |
8425 | need_copy = 0; | |
8426 | } | |
8427 | } | |
8428 | ||
8429 | if (canon == NULL || check_physname) | |
8430 | { | |
8431 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
8432 | ||
8433 | if (canon != NULL && strcmp (physname, canon) != 0) | |
8434 | { | |
8435 | /* It may not mean a bug in GDB. The compiler could also | |
8436 | compute DW_AT_linkage_name incorrectly. But in such case | |
8437 | GDB would need to be bug-to-bug compatible. */ | |
8438 | ||
8439 | complaint (&symfile_complaints, | |
8440 | _("Computed physname <%s> does not match demangled <%s> " | |
8441 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
4262abfb JK |
8442 | physname, canon, mangled, die->offset.sect_off, |
8443 | objfile_name (objfile)); | |
900e11f9 JK |
8444 | |
8445 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
8446 | is available here - over computed PHYSNAME. It is safer | |
8447 | against both buggy GDB and buggy compilers. */ | |
8448 | ||
8449 | retval = canon; | |
8450 | } | |
8451 | else | |
8452 | { | |
8453 | retval = physname; | |
8454 | need_copy = 0; | |
8455 | } | |
8456 | } | |
8457 | else | |
8458 | retval = canon; | |
8459 | ||
8460 | if (need_copy) | |
10f0c4bb | 8461 | retval = obstack_copy0 (&objfile->objfile_obstack, retval, strlen (retval)); |
900e11f9 JK |
8462 | |
8463 | do_cleanups (back_to); | |
8464 | return retval; | |
0114d602 DJ |
8465 | } |
8466 | ||
27aa8d6a SW |
8467 | /* Read the import statement specified by the given die and record it. */ |
8468 | ||
8469 | static void | |
8470 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
8471 | { | |
bb5ed363 | 8472 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 8473 | struct attribute *import_attr; |
32019081 | 8474 | struct die_info *imported_die, *child_die; |
de4affc9 | 8475 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 8476 | const char *imported_name; |
794684b6 | 8477 | const char *imported_name_prefix; |
13387711 SW |
8478 | const char *canonical_name; |
8479 | const char *import_alias; | |
8480 | const char *imported_declaration = NULL; | |
794684b6 | 8481 | const char *import_prefix; |
32019081 JK |
8482 | VEC (const_char_ptr) *excludes = NULL; |
8483 | struct cleanup *cleanups; | |
13387711 | 8484 | |
27aa8d6a SW |
8485 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
8486 | if (import_attr == NULL) | |
8487 | { | |
8488 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8489 | dwarf_tag_name (die->tag)); | |
8490 | return; | |
8491 | } | |
8492 | ||
de4affc9 CC |
8493 | imported_cu = cu; |
8494 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
8495 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
8496 | if (imported_name == NULL) |
8497 | { | |
8498 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
8499 | ||
8500 | The import in the following code: | |
8501 | namespace A | |
8502 | { | |
8503 | typedef int B; | |
8504 | } | |
8505 | ||
8506 | int main () | |
8507 | { | |
8508 | using A::B; | |
8509 | B b; | |
8510 | return b; | |
8511 | } | |
8512 | ||
8513 | ... | |
8514 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
8515 | <52> DW_AT_decl_file : 1 | |
8516 | <53> DW_AT_decl_line : 6 | |
8517 | <54> DW_AT_import : <0x75> | |
8518 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
8519 | <59> DW_AT_name : B | |
8520 | <5b> DW_AT_decl_file : 1 | |
8521 | <5c> DW_AT_decl_line : 2 | |
8522 | <5d> DW_AT_type : <0x6e> | |
8523 | ... | |
8524 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
8525 | <76> DW_AT_byte_size : 4 | |
8526 | <77> DW_AT_encoding : 5 (signed) | |
8527 | ||
8528 | imports the wrong die ( 0x75 instead of 0x58 ). | |
8529 | This case will be ignored until the gcc bug is fixed. */ | |
8530 | return; | |
8531 | } | |
8532 | ||
82856980 SW |
8533 | /* Figure out the local name after import. */ |
8534 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 8535 | |
794684b6 SW |
8536 | /* Figure out where the statement is being imported to. */ |
8537 | import_prefix = determine_prefix (die, cu); | |
8538 | ||
8539 | /* Figure out what the scope of the imported die is and prepend it | |
8540 | to the name of the imported die. */ | |
de4affc9 | 8541 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 8542 | |
f55ee35c JK |
8543 | if (imported_die->tag != DW_TAG_namespace |
8544 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 8545 | { |
13387711 SW |
8546 | imported_declaration = imported_name; |
8547 | canonical_name = imported_name_prefix; | |
794684b6 | 8548 | } |
13387711 | 8549 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 TT |
8550 | canonical_name = obconcat (&objfile->objfile_obstack, |
8551 | imported_name_prefix, "::", imported_name, | |
8552 | (char *) NULL); | |
13387711 SW |
8553 | else |
8554 | canonical_name = imported_name; | |
794684b6 | 8555 | |
32019081 JK |
8556 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
8557 | ||
8558 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
8559 | for (child_die = die->child; child_die && child_die->tag; | |
8560 | child_die = sibling_die (child_die)) | |
8561 | { | |
8562 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
8563 | represented by an imported module entry with an import attribute | |
8564 | referring to the module and owned entries corresponding to those | |
8565 | entities that are renamed as part of being imported. */ | |
8566 | ||
8567 | if (child_die->tag != DW_TAG_imported_declaration) | |
8568 | { | |
8569 | complaint (&symfile_complaints, | |
8570 | _("child DW_TAG_imported_declaration expected " | |
8571 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 8572 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8573 | continue; |
8574 | } | |
8575 | ||
8576 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
8577 | if (import_attr == NULL) | |
8578 | { | |
8579 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8580 | dwarf_tag_name (child_die->tag)); | |
8581 | continue; | |
8582 | } | |
8583 | ||
8584 | imported_cu = cu; | |
8585 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
8586 | &imported_cu); | |
8587 | imported_name = dwarf2_name (imported_die, imported_cu); | |
8588 | if (imported_name == NULL) | |
8589 | { | |
8590 | complaint (&symfile_complaints, | |
8591 | _("child DW_TAG_imported_declaration has unknown " | |
8592 | "imported name - DIE at 0x%x [in module %s]"), | |
4262abfb | 8593 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8594 | continue; |
8595 | } | |
8596 | ||
8597 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
8598 | ||
8599 | process_die (child_die, cu); | |
8600 | } | |
8601 | ||
c0cc3a76 SW |
8602 | cp_add_using_directive (import_prefix, |
8603 | canonical_name, | |
8604 | import_alias, | |
13387711 | 8605 | imported_declaration, |
32019081 | 8606 | excludes, |
12aaed36 | 8607 | 0, |
bb5ed363 | 8608 | &objfile->objfile_obstack); |
32019081 JK |
8609 | |
8610 | do_cleanups (cleanups); | |
27aa8d6a SW |
8611 | } |
8612 | ||
f4dc4d17 | 8613 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 8614 | |
cb1df416 DJ |
8615 | static void |
8616 | free_cu_line_header (void *arg) | |
8617 | { | |
8618 | struct dwarf2_cu *cu = arg; | |
8619 | ||
8620 | free_line_header (cu->line_header); | |
8621 | cu->line_header = NULL; | |
8622 | } | |
8623 | ||
1b80a9fa JK |
8624 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
8625 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
8626 | this, it was first present in GCC release 4.3.0. */ | |
8627 | ||
8628 | static int | |
8629 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
8630 | { | |
8631 | if (!cu->checked_producer) | |
8632 | check_producer (cu); | |
8633 | ||
8634 | return cu->producer_is_gcc_lt_4_3; | |
8635 | } | |
8636 | ||
9291a0cd TT |
8637 | static void |
8638 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 8639 | const char **name, const char **comp_dir) |
9291a0cd TT |
8640 | { |
8641 | struct attribute *attr; | |
8642 | ||
8643 | *name = NULL; | |
8644 | *comp_dir = NULL; | |
8645 | ||
8646 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
8647 | is not a source language identifier. */ | |
8648 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8649 | if (attr) | |
8650 | { | |
8651 | *name = DW_STRING (attr); | |
8652 | } | |
8653 | ||
8654 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
8655 | if (attr) | |
8656 | *comp_dir = DW_STRING (attr); | |
1b80a9fa JK |
8657 | else if (producer_is_gcc_lt_4_3 (cu) && *name != NULL |
8658 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 8659 | { |
15d034d0 TT |
8660 | char *d = ldirname (*name); |
8661 | ||
8662 | *comp_dir = d; | |
8663 | if (d != NULL) | |
8664 | make_cleanup (xfree, d); | |
9291a0cd TT |
8665 | } |
8666 | if (*comp_dir != NULL) | |
8667 | { | |
8668 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
8669 | directory, get rid of it. */ | |
8670 | char *cp = strchr (*comp_dir, ':'); | |
8671 | ||
8672 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
8673 | *comp_dir = cp + 1; | |
8674 | } | |
8675 | ||
8676 | if (*name == NULL) | |
8677 | *name = "<unknown>"; | |
8678 | } | |
8679 | ||
f4dc4d17 DE |
8680 | /* Handle DW_AT_stmt_list for a compilation unit. |
8681 | DIE is the DW_TAG_compile_unit die for CU. | |
f3f5162e DE |
8682 | COMP_DIR is the compilation directory. |
8683 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
8684 | |
8685 | static void | |
8686 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
b385a60d | 8687 | const char *comp_dir) /* ARI: editCase function */ |
2ab95328 TT |
8688 | { |
8689 | struct attribute *attr; | |
2ab95328 | 8690 | |
f4dc4d17 DE |
8691 | gdb_assert (! cu->per_cu->is_debug_types); |
8692 | ||
2ab95328 TT |
8693 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
8694 | if (attr) | |
8695 | { | |
8696 | unsigned int line_offset = DW_UNSND (attr); | |
8697 | struct line_header *line_header | |
3019eac3 | 8698 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
8699 | |
8700 | if (line_header) | |
dee91e82 DE |
8701 | { |
8702 | cu->line_header = line_header; | |
8703 | make_cleanup (free_cu_line_header, cu); | |
f4dc4d17 | 8704 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, 1); |
dee91e82 | 8705 | } |
2ab95328 TT |
8706 | } |
8707 | } | |
8708 | ||
95554aad | 8709 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 8710 | |
c906108c | 8711 | static void |
e7c27a73 | 8712 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8713 | { |
dee91e82 | 8714 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 8715 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 8716 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
8717 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
8718 | struct attribute *attr; | |
15d034d0 TT |
8719 | const char *name = NULL; |
8720 | const char *comp_dir = NULL; | |
c906108c SS |
8721 | struct die_info *child_die; |
8722 | bfd *abfd = objfile->obfd; | |
e142c38c | 8723 | CORE_ADDR baseaddr; |
6e70227d | 8724 | |
e142c38c | 8725 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 8726 | |
fae299cd | 8727 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
8728 | |
8729 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
8730 | from finish_block. */ | |
2acceee2 | 8731 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
8732 | lowpc = highpc; |
8733 | lowpc += baseaddr; | |
8734 | highpc += baseaddr; | |
8735 | ||
9291a0cd | 8736 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 8737 | |
95554aad | 8738 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 8739 | |
f4b8a18d KW |
8740 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
8741 | standardised yet. As a workaround for the language detection we fall | |
8742 | back to the DW_AT_producer string. */ | |
8743 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
8744 | cu->language = language_opencl; | |
8745 | ||
3019eac3 DE |
8746 | /* Similar hack for Go. */ |
8747 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
8748 | set_cu_language (DW_LANG_Go, cu); | |
8749 | ||
f4dc4d17 | 8750 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
8751 | |
8752 | /* Decode line number information if present. We do this before | |
8753 | processing child DIEs, so that the line header table is available | |
8754 | for DW_AT_decl_file. */ | |
f4dc4d17 | 8755 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
3019eac3 DE |
8756 | |
8757 | /* Process all dies in compilation unit. */ | |
8758 | if (die->child != NULL) | |
8759 | { | |
8760 | child_die = die->child; | |
8761 | while (child_die && child_die->tag) | |
8762 | { | |
8763 | process_die (child_die, cu); | |
8764 | child_die = sibling_die (child_die); | |
8765 | } | |
8766 | } | |
8767 | ||
8768 | /* Decode macro information, if present. Dwarf 2 macro information | |
8769 | refers to information in the line number info statement program | |
8770 | header, so we can only read it if we've read the header | |
8771 | successfully. */ | |
8772 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
8773 | if (attr && cu->line_header) | |
8774 | { | |
8775 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
8776 | complaint (&symfile_complaints, | |
8777 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
8778 | ||
09262596 | 8779 | dwarf_decode_macros (cu, DW_UNSND (attr), comp_dir, 1); |
3019eac3 DE |
8780 | } |
8781 | else | |
8782 | { | |
8783 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
8784 | if (attr && cu->line_header) | |
8785 | { | |
8786 | unsigned int macro_offset = DW_UNSND (attr); | |
8787 | ||
09262596 | 8788 | dwarf_decode_macros (cu, macro_offset, comp_dir, 0); |
3019eac3 DE |
8789 | } |
8790 | } | |
8791 | ||
8792 | do_cleanups (back_to); | |
8793 | } | |
8794 | ||
f4dc4d17 DE |
8795 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
8796 | Create the set of symtabs used by this TU, or if this TU is sharing | |
8797 | symtabs with another TU and the symtabs have already been created | |
8798 | then restore those symtabs in the line header. | |
8799 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
8800 | |
8801 | static void | |
f4dc4d17 | 8802 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 8803 | { |
f4dc4d17 DE |
8804 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8805 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
8806 | struct type_unit_group *tu_group; | |
8807 | int first_time; | |
8808 | struct line_header *lh; | |
3019eac3 | 8809 | struct attribute *attr; |
f4dc4d17 | 8810 | unsigned int i, line_offset; |
0186c6a7 | 8811 | struct signatured_type *sig_type; |
3019eac3 | 8812 | |
f4dc4d17 | 8813 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 8814 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 8815 | |
f4dc4d17 | 8816 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 8817 | |
f4dc4d17 | 8818 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 8819 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
8820 | if (sig_type->type_unit_group == NULL) |
8821 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
8822 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
8823 | |
8824 | /* If we've already processed this stmt_list there's no real need to | |
8825 | do it again, we could fake it and just recreate the part we need | |
8826 | (file name,index -> symtab mapping). If data shows this optimization | |
8827 | is useful we can do it then. */ | |
8828 | first_time = tu_group->primary_symtab == NULL; | |
8829 | ||
8830 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
8831 | debug info. */ | |
8832 | lh = NULL; | |
8833 | if (attr != NULL) | |
3019eac3 | 8834 | { |
f4dc4d17 DE |
8835 | line_offset = DW_UNSND (attr); |
8836 | lh = dwarf_decode_line_header (line_offset, cu); | |
8837 | } | |
8838 | if (lh == NULL) | |
8839 | { | |
8840 | if (first_time) | |
8841 | dwarf2_start_symtab (cu, "", NULL, 0); | |
8842 | else | |
8843 | { | |
8844 | gdb_assert (tu_group->symtabs == NULL); | |
8845 | restart_symtab (0); | |
8846 | } | |
8847 | /* Note: The primary symtab will get allocated at the end. */ | |
8848 | return; | |
3019eac3 DE |
8849 | } |
8850 | ||
f4dc4d17 DE |
8851 | cu->line_header = lh; |
8852 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 8853 | |
f4dc4d17 DE |
8854 | if (first_time) |
8855 | { | |
8856 | dwarf2_start_symtab (cu, "", NULL, 0); | |
3019eac3 | 8857 | |
f4dc4d17 DE |
8858 | tu_group->num_symtabs = lh->num_file_names; |
8859 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 8860 | |
f4dc4d17 DE |
8861 | for (i = 0; i < lh->num_file_names; ++i) |
8862 | { | |
d521ce57 | 8863 | const char *dir = NULL; |
f4dc4d17 | 8864 | struct file_entry *fe = &lh->file_names[i]; |
3019eac3 | 8865 | |
f4dc4d17 DE |
8866 | if (fe->dir_index) |
8867 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8868 | dwarf2_start_subfile (fe->name, dir, NULL); | |
3019eac3 | 8869 | |
f4dc4d17 DE |
8870 | /* Note: We don't have to watch for the main subfile here, type units |
8871 | don't have DW_AT_name. */ | |
3019eac3 | 8872 | |
f4dc4d17 DE |
8873 | if (current_subfile->symtab == NULL) |
8874 | { | |
8875 | /* NOTE: start_subfile will recognize when it's been passed | |
8876 | a file it has already seen. So we can't assume there's a | |
8877 | simple mapping from lh->file_names to subfiles, | |
8878 | lh->file_names may contain dups. */ | |
8879 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
8880 | objfile); | |
8881 | } | |
8882 | ||
8883 | fe->symtab = current_subfile->symtab; | |
8884 | tu_group->symtabs[i] = fe->symtab; | |
8885 | } | |
8886 | } | |
8887 | else | |
3019eac3 | 8888 | { |
f4dc4d17 DE |
8889 | restart_symtab (0); |
8890 | ||
8891 | for (i = 0; i < lh->num_file_names; ++i) | |
8892 | { | |
8893 | struct file_entry *fe = &lh->file_names[i]; | |
8894 | ||
8895 | fe->symtab = tu_group->symtabs[i]; | |
8896 | } | |
3019eac3 DE |
8897 | } |
8898 | ||
f4dc4d17 DE |
8899 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
8900 | so they don't have a "real" (so to speak) symtab anyway. | |
8901 | There is later code that will assign the main symtab to all symbols | |
8902 | that don't have one. We need to handle the case of a symbol with a | |
8903 | missing symtab (DW_AT_decl_file) anyway. */ | |
8904 | } | |
3019eac3 | 8905 | |
f4dc4d17 DE |
8906 | /* Process DW_TAG_type_unit. |
8907 | For TUs we want to skip the first top level sibling if it's not the | |
8908 | actual type being defined by this TU. In this case the first top | |
8909 | level sibling is there to provide context only. */ | |
3019eac3 | 8910 | |
f4dc4d17 DE |
8911 | static void |
8912 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
8913 | { | |
8914 | struct die_info *child_die; | |
3019eac3 | 8915 | |
f4dc4d17 DE |
8916 | prepare_one_comp_unit (cu, die, language_minimal); |
8917 | ||
8918 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
8919 | We do this before processing child DIEs, so that the line header table | |
8920 | is available for DW_AT_decl_file. */ | |
8921 | setup_type_unit_groups (die, cu); | |
8922 | ||
8923 | if (die->child != NULL) | |
8924 | { | |
8925 | child_die = die->child; | |
8926 | while (child_die && child_die->tag) | |
8927 | { | |
8928 | process_die (child_die, cu); | |
8929 | child_die = sibling_die (child_die); | |
8930 | } | |
8931 | } | |
3019eac3 DE |
8932 | } |
8933 | \f | |
80626a55 DE |
8934 | /* DWO/DWP files. |
8935 | ||
8936 | http://gcc.gnu.org/wiki/DebugFission | |
8937 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
8938 | ||
8939 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
8940 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
8941 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
8942 | |
8943 | static hashval_t | |
8944 | hash_dwo_file (const void *item) | |
8945 | { | |
8946 | const struct dwo_file *dwo_file = item; | |
a2ce51a0 | 8947 | hashval_t hash; |
3019eac3 | 8948 | |
a2ce51a0 DE |
8949 | hash = htab_hash_string (dwo_file->dwo_name); |
8950 | if (dwo_file->comp_dir != NULL) | |
8951 | hash += htab_hash_string (dwo_file->comp_dir); | |
8952 | return hash; | |
3019eac3 DE |
8953 | } |
8954 | ||
8955 | static int | |
8956 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
8957 | { | |
8958 | const struct dwo_file *lhs = item_lhs; | |
8959 | const struct dwo_file *rhs = item_rhs; | |
8960 | ||
a2ce51a0 DE |
8961 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
8962 | return 0; | |
8963 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
8964 | return lhs->comp_dir == rhs->comp_dir; | |
8965 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
8966 | } |
8967 | ||
8968 | /* Allocate a hash table for DWO files. */ | |
8969 | ||
8970 | static htab_t | |
8971 | allocate_dwo_file_hash_table (void) | |
8972 | { | |
8973 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8974 | ||
8975 | return htab_create_alloc_ex (41, | |
8976 | hash_dwo_file, | |
8977 | eq_dwo_file, | |
8978 | NULL, | |
8979 | &objfile->objfile_obstack, | |
8980 | hashtab_obstack_allocate, | |
8981 | dummy_obstack_deallocate); | |
8982 | } | |
8983 | ||
80626a55 DE |
8984 | /* Lookup DWO file DWO_NAME. */ |
8985 | ||
8986 | static void ** | |
0ac5b59e | 8987 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
8988 | { |
8989 | struct dwo_file find_entry; | |
8990 | void **slot; | |
8991 | ||
8992 | if (dwarf2_per_objfile->dwo_files == NULL) | |
8993 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
8994 | ||
8995 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
8996 | find_entry.dwo_name = dwo_name; |
8997 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
8998 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
8999 | ||
9000 | return slot; | |
9001 | } | |
9002 | ||
3019eac3 DE |
9003 | static hashval_t |
9004 | hash_dwo_unit (const void *item) | |
9005 | { | |
9006 | const struct dwo_unit *dwo_unit = item; | |
9007 | ||
9008 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
9009 | return dwo_unit->signature; | |
9010 | } | |
9011 | ||
9012 | static int | |
9013 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
9014 | { | |
9015 | const struct dwo_unit *lhs = item_lhs; | |
9016 | const struct dwo_unit *rhs = item_rhs; | |
9017 | ||
9018 | /* The signature is assumed to be unique within the DWO file. | |
9019 | So while object file CU dwo_id's always have the value zero, | |
9020 | that's OK, assuming each object file DWO file has only one CU, | |
9021 | and that's the rule for now. */ | |
9022 | return lhs->signature == rhs->signature; | |
9023 | } | |
9024 | ||
9025 | /* Allocate a hash table for DWO CUs,TUs. | |
9026 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
9027 | ||
9028 | static htab_t | |
9029 | allocate_dwo_unit_table (struct objfile *objfile) | |
9030 | { | |
9031 | /* Start out with a pretty small number. | |
9032 | Generally DWO files contain only one CU and maybe some TUs. */ | |
9033 | return htab_create_alloc_ex (3, | |
9034 | hash_dwo_unit, | |
9035 | eq_dwo_unit, | |
9036 | NULL, | |
9037 | &objfile->objfile_obstack, | |
9038 | hashtab_obstack_allocate, | |
9039 | dummy_obstack_deallocate); | |
9040 | } | |
9041 | ||
80626a55 | 9042 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 9043 | |
19c3d4c9 | 9044 | struct create_dwo_cu_data |
3019eac3 DE |
9045 | { |
9046 | struct dwo_file *dwo_file; | |
19c3d4c9 | 9047 | struct dwo_unit dwo_unit; |
3019eac3 DE |
9048 | }; |
9049 | ||
19c3d4c9 | 9050 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
9051 | |
9052 | static void | |
19c3d4c9 DE |
9053 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
9054 | const gdb_byte *info_ptr, | |
9055 | struct die_info *comp_unit_die, | |
9056 | int has_children, | |
9057 | void *datap) | |
3019eac3 DE |
9058 | { |
9059 | struct dwarf2_cu *cu = reader->cu; | |
9060 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9061 | sect_offset offset = cu->per_cu->offset; | |
8a0459fd | 9062 | struct dwarf2_section_info *section = cu->per_cu->section; |
19c3d4c9 | 9063 | struct create_dwo_cu_data *data = datap; |
3019eac3 | 9064 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 9065 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 9066 | struct attribute *attr; |
3019eac3 DE |
9067 | |
9068 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
9069 | if (attr == NULL) | |
9070 | { | |
19c3d4c9 DE |
9071 | complaint (&symfile_complaints, |
9072 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
9073 | " its dwo_id [in module %s]"), | |
9074 | offset.sect_off, dwo_file->dwo_name); | |
3019eac3 DE |
9075 | return; |
9076 | } | |
9077 | ||
3019eac3 DE |
9078 | dwo_unit->dwo_file = dwo_file; |
9079 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 9080 | dwo_unit->section = section; |
3019eac3 DE |
9081 | dwo_unit->offset = offset; |
9082 | dwo_unit->length = cu->per_cu->length; | |
9083 | ||
09406207 | 9084 | if (dwarf2_read_debug) |
4031ecc5 DE |
9085 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9086 | offset.sect_off, hex_string (dwo_unit->signature)); | |
3019eac3 DE |
9087 | } |
9088 | ||
19c3d4c9 DE |
9089 | /* Create the dwo_unit for the lone CU in DWO_FILE. |
9090 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 | 9091 | |
19c3d4c9 DE |
9092 | static struct dwo_unit * |
9093 | create_dwo_cu (struct dwo_file *dwo_file) | |
3019eac3 DE |
9094 | { |
9095 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9096 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
9097 | bfd *abfd; | |
9098 | htab_t cu_htab; | |
d521ce57 | 9099 | const gdb_byte *info_ptr, *end_ptr; |
19c3d4c9 DE |
9100 | struct create_dwo_cu_data create_dwo_cu_data; |
9101 | struct dwo_unit *dwo_unit; | |
3019eac3 DE |
9102 | |
9103 | dwarf2_read_section (objfile, section); | |
9104 | info_ptr = section->buffer; | |
9105 | ||
9106 | if (info_ptr == NULL) | |
9107 | return NULL; | |
9108 | ||
9109 | /* We can't set abfd until now because the section may be empty or | |
9110 | not present, in which case section->asection will be NULL. */ | |
a32a8923 | 9111 | abfd = get_section_bfd_owner (section); |
3019eac3 | 9112 | |
09406207 | 9113 | if (dwarf2_read_debug) |
19c3d4c9 DE |
9114 | { |
9115 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
a32a8923 DE |
9116 | get_section_name (section), |
9117 | get_section_file_name (section)); | |
19c3d4c9 | 9118 | } |
3019eac3 | 9119 | |
19c3d4c9 DE |
9120 | create_dwo_cu_data.dwo_file = dwo_file; |
9121 | dwo_unit = NULL; | |
3019eac3 DE |
9122 | |
9123 | end_ptr = info_ptr + section->size; | |
9124 | while (info_ptr < end_ptr) | |
9125 | { | |
9126 | struct dwarf2_per_cu_data per_cu; | |
9127 | ||
19c3d4c9 DE |
9128 | memset (&create_dwo_cu_data.dwo_unit, 0, |
9129 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
9130 | memset (&per_cu, 0, sizeof (per_cu)); |
9131 | per_cu.objfile = objfile; | |
9132 | per_cu.is_debug_types = 0; | |
9133 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 9134 | per_cu.section = section; |
3019eac3 DE |
9135 | |
9136 | init_cutu_and_read_dies_no_follow (&per_cu, | |
9137 | &dwo_file->sections.abbrev, | |
9138 | dwo_file, | |
19c3d4c9 DE |
9139 | create_dwo_cu_reader, |
9140 | &create_dwo_cu_data); | |
9141 | ||
9142 | if (create_dwo_cu_data.dwo_unit.dwo_file != NULL) | |
9143 | { | |
9144 | /* If we've already found one, complain. We only support one | |
9145 | because having more than one requires hacking the dwo_name of | |
9146 | each to match, which is highly unlikely to happen. */ | |
9147 | if (dwo_unit != NULL) | |
9148 | { | |
9149 | complaint (&symfile_complaints, | |
9150 | _("Multiple CUs in DWO file %s [in module %s]"), | |
4262abfb | 9151 | dwo_file->dwo_name, objfile_name (objfile)); |
19c3d4c9 DE |
9152 | break; |
9153 | } | |
9154 | ||
9155 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9156 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
9157 | } | |
3019eac3 DE |
9158 | |
9159 | info_ptr += per_cu.length; | |
9160 | } | |
9161 | ||
19c3d4c9 | 9162 | return dwo_unit; |
3019eac3 DE |
9163 | } |
9164 | ||
80626a55 DE |
9165 | /* DWP file .debug_{cu,tu}_index section format: |
9166 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
9167 | ||
d2415c6c DE |
9168 | DWP Version 1: |
9169 | ||
80626a55 DE |
9170 | Both index sections have the same format, and serve to map a 64-bit |
9171 | signature to a set of section numbers. Each section begins with a header, | |
9172 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
9173 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
9174 | aligned at 8-byte boundaries in the file. | |
9175 | ||
d2415c6c DE |
9176 | The index section header consists of: |
9177 | ||
9178 | V, 32 bit version number | |
9179 | -, 32 bits unused | |
9180 | N, 32 bit number of compilation units or type units in the index | |
9181 | M, 32 bit number of slots in the hash table | |
80626a55 | 9182 | |
d2415c6c | 9183 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 9184 | |
d2415c6c DE |
9185 | The hash table begins at offset 16 in the section, and consists of an array |
9186 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
9187 | order of the application binary). Unused slots in the hash table are 0. | |
9188 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 9189 | |
d2415c6c DE |
9190 | The parallel table begins immediately after the hash table |
9191 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
9192 | array of 32-bit indexes (using the byte order of the application binary), | |
9193 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
9194 | table contains a 32-bit index into the pool of section numbers. For unused | |
9195 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 9196 | |
73869dc2 DE |
9197 | The pool of section numbers begins immediately following the hash table |
9198 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
9199 | section numbers consists of an array of 32-bit words (using the byte order | |
9200 | of the application binary). Each item in the array is indexed starting | |
9201 | from 0. The hash table entry provides the index of the first section | |
9202 | number in the set. Additional section numbers in the set follow, and the | |
9203 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
9204 | ||
9205 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
9206 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
9207 | be the second entry. Other members of the set may follow in any order. | |
9208 | ||
9209 | --- | |
9210 | ||
9211 | DWP Version 2: | |
9212 | ||
9213 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
9214 | and the entries in the index tables are now offsets into these sections. | |
9215 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
9216 | section. | |
9217 | ||
9218 | Index Section Contents: | |
9219 | Header | |
9220 | Hash Table of Signatures dwp_hash_table.hash_table | |
9221 | Parallel Table of Indices dwp_hash_table.unit_table | |
9222 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
9223 | Table of Section Sizes dwp_hash_table.v2.sizes | |
9224 | ||
9225 | The index section header consists of: | |
9226 | ||
9227 | V, 32 bit version number | |
9228 | L, 32 bit number of columns in the table of section offsets | |
9229 | N, 32 bit number of compilation units or type units in the index | |
9230 | M, 32 bit number of slots in the hash table | |
9231 | ||
9232 | Numbers are recorded using the byte order of the application binary. | |
9233 | ||
9234 | The hash table has the same format as version 1. | |
9235 | The parallel table of indices has the same format as version 1, | |
9236 | except that the entries are origin-1 indices into the table of sections | |
9237 | offsets and the table of section sizes. | |
9238 | ||
9239 | The table of offsets begins immediately following the parallel table | |
9240 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
9241 | a two-dimensional array of 32-bit words (using the byte order of the | |
9242 | application binary), with L columns and N+1 rows, in row-major order. | |
9243 | Each row in the array is indexed starting from 0. The first row provides | |
9244 | a key to the remaining rows: each column in this row provides an identifier | |
9245 | for a debug section, and the offsets in the same column of subsequent rows | |
9246 | refer to that section. The section identifiers are: | |
9247 | ||
9248 | DW_SECT_INFO 1 .debug_info.dwo | |
9249 | DW_SECT_TYPES 2 .debug_types.dwo | |
9250 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
9251 | DW_SECT_LINE 4 .debug_line.dwo | |
9252 | DW_SECT_LOC 5 .debug_loc.dwo | |
9253 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
9254 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
9255 | DW_SECT_MACRO 8 .debug_macro.dwo | |
9256 | ||
9257 | The offsets provided by the CU and TU index sections are the base offsets | |
9258 | for the contributions made by each CU or TU to the corresponding section | |
9259 | in the package file. Each CU and TU header contains an abbrev_offset | |
9260 | field, used to find the abbreviations table for that CU or TU within the | |
9261 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
9262 | be interpreted as relative to the base offset given in the index section. | |
9263 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
9264 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
9265 | and offsets into other debug sections obtained from DWARF attributes should | |
9266 | also be interpreted as relative to the corresponding base offset. | |
9267 | ||
9268 | The table of sizes begins immediately following the table of offsets. | |
9269 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
9270 | with L columns and N rows, in row-major order. Each row in the array is | |
9271 | indexed starting from 1 (row 0 is shared by the two tables). | |
9272 | ||
9273 | --- | |
9274 | ||
9275 | Hash table lookup is handled the same in version 1 and 2: | |
9276 | ||
9277 | We assume that N and M will not exceed 2^32 - 1. | |
9278 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
9279 | ||
d2415c6c DE |
9280 | Given a 64-bit compilation unit signature or a type signature S, an entry |
9281 | in the hash table is located as follows: | |
80626a55 | 9282 | |
d2415c6c DE |
9283 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
9284 | the low-order k bits all set to 1. | |
80626a55 | 9285 | |
d2415c6c | 9286 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 9287 | |
d2415c6c DE |
9288 | 3) If the hash table entry at index H matches the signature, use that |
9289 | entry. If the hash table entry at index H is unused (all zeroes), | |
9290 | terminate the search: the signature is not present in the table. | |
80626a55 | 9291 | |
d2415c6c | 9292 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 9293 | |
d2415c6c | 9294 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 9295 | to stop at an unused slot or find the match. */ |
80626a55 DE |
9296 | |
9297 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
9298 | .debug_{info,types}.dwo in DWP_FILE. | |
9299 | Returns NULL if there isn't one. | |
9300 | Note: This function processes DWP files only, not DWO files. */ | |
9301 | ||
9302 | static struct dwp_hash_table * | |
9303 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
9304 | { | |
9305 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9306 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 9307 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 9308 | struct dwarf2_section_info *index; |
73869dc2 | 9309 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
9310 | struct dwp_hash_table *htab; |
9311 | ||
9312 | if (is_debug_types) | |
9313 | index = &dwp_file->sections.tu_index; | |
9314 | else | |
9315 | index = &dwp_file->sections.cu_index; | |
9316 | ||
9317 | if (dwarf2_section_empty_p (index)) | |
9318 | return NULL; | |
9319 | dwarf2_read_section (objfile, index); | |
9320 | ||
9321 | index_ptr = index->buffer; | |
9322 | index_end = index_ptr + index->size; | |
9323 | ||
9324 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
9325 | index_ptr += 4; |
9326 | if (version == 2) | |
9327 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
9328 | else | |
9329 | nr_columns = 0; | |
9330 | index_ptr += 4; | |
80626a55 DE |
9331 | nr_units = read_4_bytes (dbfd, index_ptr); |
9332 | index_ptr += 4; | |
9333 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
9334 | index_ptr += 4; | |
9335 | ||
73869dc2 | 9336 | if (version != 1 && version != 2) |
80626a55 | 9337 | { |
21aa081e | 9338 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 9339 | " [in module %s]"), |
21aa081e | 9340 | pulongest (version), dwp_file->name); |
80626a55 DE |
9341 | } |
9342 | if (nr_slots != (nr_slots & -nr_slots)) | |
9343 | { | |
21aa081e | 9344 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 9345 | " is not power of 2 [in module %s]"), |
21aa081e | 9346 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
9347 | } |
9348 | ||
9349 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
9350 | htab->version = version; |
9351 | htab->nr_columns = nr_columns; | |
80626a55 DE |
9352 | htab->nr_units = nr_units; |
9353 | htab->nr_slots = nr_slots; | |
9354 | htab->hash_table = index_ptr; | |
9355 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
9356 | |
9357 | /* Exit early if the table is empty. */ | |
9358 | if (nr_slots == 0 || nr_units == 0 | |
9359 | || (version == 2 && nr_columns == 0)) | |
9360 | { | |
9361 | /* All must be zero. */ | |
9362 | if (nr_slots != 0 || nr_units != 0 | |
9363 | || (version == 2 && nr_columns != 0)) | |
9364 | { | |
9365 | complaint (&symfile_complaints, | |
9366 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
9367 | " all zero [in modules %s]"), | |
9368 | dwp_file->name); | |
9369 | } | |
9370 | return htab; | |
9371 | } | |
9372 | ||
9373 | if (version == 1) | |
9374 | { | |
9375 | htab->section_pool.v1.indices = | |
9376 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9377 | /* It's harder to decide whether the section is too small in v1. | |
9378 | V1 is deprecated anyway so we punt. */ | |
9379 | } | |
9380 | else | |
9381 | { | |
9382 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9383 | int *ids = htab->section_pool.v2.section_ids; | |
9384 | /* Reverse map for error checking. */ | |
9385 | int ids_seen[DW_SECT_MAX + 1]; | |
9386 | int i; | |
9387 | ||
9388 | if (nr_columns < 2) | |
9389 | { | |
9390 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
9391 | " in section table [in module %s]"), | |
9392 | dwp_file->name); | |
9393 | } | |
9394 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
9395 | { | |
9396 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
9397 | " in section table [in module %s]"), | |
9398 | dwp_file->name); | |
9399 | } | |
9400 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9401 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9402 | for (i = 0; i < nr_columns; ++i) | |
9403 | { | |
9404 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
9405 | ||
9406 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
9407 | { | |
9408 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
9409 | " in section table [in module %s]"), | |
9410 | id, dwp_file->name); | |
9411 | } | |
9412 | if (ids_seen[id] != -1) | |
9413 | { | |
9414 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
9415 | " id %d in section table [in module %s]"), | |
9416 | id, dwp_file->name); | |
9417 | } | |
9418 | ids_seen[id] = i; | |
9419 | ids[i] = id; | |
9420 | } | |
9421 | /* Must have exactly one info or types section. */ | |
9422 | if (((ids_seen[DW_SECT_INFO] != -1) | |
9423 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
9424 | != 1) | |
9425 | { | |
9426 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
9427 | " DWO info/types section [in module %s]"), | |
9428 | dwp_file->name); | |
9429 | } | |
9430 | /* Must have an abbrev section. */ | |
9431 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
9432 | { | |
9433 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
9434 | " section [in module %s]"), | |
9435 | dwp_file->name); | |
9436 | } | |
9437 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
9438 | htab->section_pool.v2.sizes = | |
9439 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
9440 | * nr_units * nr_columns); | |
9441 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
9442 | * nr_units * nr_columns)) | |
9443 | > index_end) | |
9444 | { | |
9445 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
9446 | " [in module %s]"), | |
9447 | dwp_file->name); | |
9448 | } | |
9449 | } | |
80626a55 DE |
9450 | |
9451 | return htab; | |
9452 | } | |
9453 | ||
9454 | /* Update SECTIONS with the data from SECTP. | |
9455 | ||
9456 | This function is like the other "locate" section routines that are | |
9457 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 9458 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
9459 | |
9460 | The result is non-zero for success, or zero if an error was found. */ | |
9461 | ||
9462 | static int | |
73869dc2 DE |
9463 | locate_v1_virtual_dwo_sections (asection *sectp, |
9464 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
9465 | { |
9466 | const struct dwop_section_names *names = &dwop_section_names; | |
9467 | ||
9468 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
9469 | { | |
9470 | /* There can be only one. */ | |
73869dc2 | 9471 | if (sections->abbrev.s.asection != NULL) |
80626a55 | 9472 | return 0; |
73869dc2 | 9473 | sections->abbrev.s.asection = sectp; |
80626a55 DE |
9474 | sections->abbrev.size = bfd_get_section_size (sectp); |
9475 | } | |
9476 | else if (section_is_p (sectp->name, &names->info_dwo) | |
9477 | || section_is_p (sectp->name, &names->types_dwo)) | |
9478 | { | |
9479 | /* There can be only one. */ | |
73869dc2 | 9480 | if (sections->info_or_types.s.asection != NULL) |
80626a55 | 9481 | return 0; |
73869dc2 | 9482 | sections->info_or_types.s.asection = sectp; |
80626a55 DE |
9483 | sections->info_or_types.size = bfd_get_section_size (sectp); |
9484 | } | |
9485 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
9486 | { | |
9487 | /* There can be only one. */ | |
73869dc2 | 9488 | if (sections->line.s.asection != NULL) |
80626a55 | 9489 | return 0; |
73869dc2 | 9490 | sections->line.s.asection = sectp; |
80626a55 DE |
9491 | sections->line.size = bfd_get_section_size (sectp); |
9492 | } | |
9493 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
9494 | { | |
9495 | /* There can be only one. */ | |
73869dc2 | 9496 | if (sections->loc.s.asection != NULL) |
80626a55 | 9497 | return 0; |
73869dc2 | 9498 | sections->loc.s.asection = sectp; |
80626a55 DE |
9499 | sections->loc.size = bfd_get_section_size (sectp); |
9500 | } | |
9501 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
9502 | { | |
9503 | /* There can be only one. */ | |
73869dc2 | 9504 | if (sections->macinfo.s.asection != NULL) |
80626a55 | 9505 | return 0; |
73869dc2 | 9506 | sections->macinfo.s.asection = sectp; |
80626a55 DE |
9507 | sections->macinfo.size = bfd_get_section_size (sectp); |
9508 | } | |
9509 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
9510 | { | |
9511 | /* There can be only one. */ | |
73869dc2 | 9512 | if (sections->macro.s.asection != NULL) |
80626a55 | 9513 | return 0; |
73869dc2 | 9514 | sections->macro.s.asection = sectp; |
80626a55 DE |
9515 | sections->macro.size = bfd_get_section_size (sectp); |
9516 | } | |
9517 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
9518 | { | |
9519 | /* There can be only one. */ | |
73869dc2 | 9520 | if (sections->str_offsets.s.asection != NULL) |
80626a55 | 9521 | return 0; |
73869dc2 | 9522 | sections->str_offsets.s.asection = sectp; |
80626a55 DE |
9523 | sections->str_offsets.size = bfd_get_section_size (sectp); |
9524 | } | |
9525 | else | |
9526 | { | |
9527 | /* No other kind of section is valid. */ | |
9528 | return 0; | |
9529 | } | |
9530 | ||
9531 | return 1; | |
9532 | } | |
9533 | ||
73869dc2 DE |
9534 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
9535 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9536 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9537 | This is for DWP version 1 files. */ | |
80626a55 DE |
9538 | |
9539 | static struct dwo_unit * | |
73869dc2 DE |
9540 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
9541 | uint32_t unit_index, | |
9542 | const char *comp_dir, | |
9543 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
9544 | { |
9545 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
9546 | const struct dwp_hash_table *dwp_htab = |
9547 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
9548 | bfd *dbfd = dwp_file->dbfd; |
9549 | const char *kind = is_debug_types ? "TU" : "CU"; | |
9550 | struct dwo_file *dwo_file; | |
9551 | struct dwo_unit *dwo_unit; | |
73869dc2 | 9552 | struct virtual_v1_dwo_sections sections; |
80626a55 DE |
9553 | void **dwo_file_slot; |
9554 | char *virtual_dwo_name; | |
9555 | struct dwarf2_section_info *cutu; | |
9556 | struct cleanup *cleanups; | |
9557 | int i; | |
9558 | ||
73869dc2 DE |
9559 | gdb_assert (dwp_file->version == 1); |
9560 | ||
80626a55 DE |
9561 | if (dwarf2_read_debug) |
9562 | { | |
73869dc2 | 9563 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 9564 | kind, |
73869dc2 | 9565 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
9566 | dwp_file->name); |
9567 | } | |
9568 | ||
19ac8c2e | 9569 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
9570 | Put a limit on the number of sections we look for so that bad data |
9571 | doesn't cause us to loop forever. */ | |
9572 | ||
73869dc2 | 9573 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
9574 | (1 /* .debug_info or .debug_types */ \ |
9575 | + 1 /* .debug_abbrev */ \ | |
9576 | + 1 /* .debug_line */ \ | |
9577 | + 1 /* .debug_loc */ \ | |
9578 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 9579 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
9580 | + 1 /* trailing zero */) |
9581 | ||
9582 | memset (§ions, 0, sizeof (sections)); | |
9583 | cleanups = make_cleanup (null_cleanup, 0); | |
9584 | ||
73869dc2 | 9585 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
9586 | { |
9587 | asection *sectp; | |
9588 | uint32_t section_nr = | |
9589 | read_4_bytes (dbfd, | |
73869dc2 DE |
9590 | dwp_htab->section_pool.v1.indices |
9591 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
9592 | |
9593 | if (section_nr == 0) | |
9594 | break; | |
9595 | if (section_nr >= dwp_file->num_sections) | |
9596 | { | |
9597 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
9598 | " [in module %s]"), | |
9599 | dwp_file->name); | |
9600 | } | |
9601 | ||
9602 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 9603 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
9604 | { |
9605 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
9606 | " [in module %s]"), | |
9607 | dwp_file->name); | |
9608 | } | |
9609 | } | |
9610 | ||
9611 | if (i < 2 | |
a32a8923 DE |
9612 | || dwarf2_section_empty_p (§ions.info_or_types) |
9613 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
9614 | { |
9615 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
9616 | " [in module %s]"), | |
9617 | dwp_file->name); | |
9618 | } | |
73869dc2 | 9619 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
9620 | { |
9621 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
9622 | " [in module %s]"), | |
9623 | dwp_file->name); | |
9624 | } | |
9625 | ||
9626 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
9627 | have dwo_unit "live" in that. At least for now. | |
9628 | ||
9629 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 9630 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
9631 | file, we can combine them back into a virtual DWO file to save space |
9632 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
9633 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
9634 | ||
2792b94d PM |
9635 | virtual_dwo_name = |
9636 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
a32a8923 DE |
9637 | get_section_id (§ions.abbrev), |
9638 | get_section_id (§ions.line), | |
9639 | get_section_id (§ions.loc), | |
9640 | get_section_id (§ions.str_offsets)); | |
80626a55 DE |
9641 | make_cleanup (xfree, virtual_dwo_name); |
9642 | /* Can we use an existing virtual DWO file? */ | |
0ac5b59e | 9643 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); |
80626a55 DE |
9644 | /* Create one if necessary. */ |
9645 | if (*dwo_file_slot == NULL) | |
9646 | { | |
9647 | if (dwarf2_read_debug) | |
9648 | { | |
9649 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
9650 | virtual_dwo_name); | |
9651 | } | |
9652 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
9653 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, |
9654 | virtual_dwo_name, | |
9655 | strlen (virtual_dwo_name)); | |
9656 | dwo_file->comp_dir = comp_dir; | |
80626a55 DE |
9657 | dwo_file->sections.abbrev = sections.abbrev; |
9658 | dwo_file->sections.line = sections.line; | |
9659 | dwo_file->sections.loc = sections.loc; | |
9660 | dwo_file->sections.macinfo = sections.macinfo; | |
9661 | dwo_file->sections.macro = sections.macro; | |
9662 | dwo_file->sections.str_offsets = sections.str_offsets; | |
9663 | /* The "str" section is global to the entire DWP file. */ | |
9664 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 9665 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
9666 | there's no need to record it in dwo_file. |
9667 | Also, we can't simply record type sections in dwo_file because | |
9668 | we record a pointer into the vector in dwo_unit. As we collect more | |
9669 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
9670 | for it, invalidating all copies of pointers into the previous |
9671 | contents. */ | |
80626a55 DE |
9672 | *dwo_file_slot = dwo_file; |
9673 | } | |
9674 | else | |
9675 | { | |
9676 | if (dwarf2_read_debug) | |
9677 | { | |
9678 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
9679 | virtual_dwo_name); | |
9680 | } | |
9681 | dwo_file = *dwo_file_slot; | |
9682 | } | |
9683 | do_cleanups (cleanups); | |
9684 | ||
9685 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9686 | dwo_unit->dwo_file = dwo_file; | |
9687 | dwo_unit->signature = signature; | |
8a0459fd DE |
9688 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, |
9689 | sizeof (struct dwarf2_section_info)); | |
9690 | *dwo_unit->section = sections.info_or_types; | |
57d63ce2 | 9691 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
9692 | |
9693 | return dwo_unit; | |
9694 | } | |
9695 | ||
73869dc2 DE |
9696 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
9697 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
9698 | piece within that section used by a TU/CU, return a virtual section | |
9699 | of just that piece. */ | |
9700 | ||
9701 | static struct dwarf2_section_info | |
9702 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
9703 | bfd_size_type offset, bfd_size_type size) | |
9704 | { | |
9705 | struct dwarf2_section_info result; | |
9706 | asection *sectp; | |
9707 | ||
9708 | gdb_assert (section != NULL); | |
9709 | gdb_assert (!section->is_virtual); | |
9710 | ||
9711 | memset (&result, 0, sizeof (result)); | |
9712 | result.s.containing_section = section; | |
9713 | result.is_virtual = 1; | |
9714 | ||
9715 | if (size == 0) | |
9716 | return result; | |
9717 | ||
9718 | sectp = get_section_bfd_section (section); | |
9719 | ||
9720 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
9721 | bounds of the real section. This is a pretty-rare event, so just | |
9722 | flag an error (easier) instead of a warning and trying to cope. */ | |
9723 | if (sectp == NULL | |
9724 | || offset + size > bfd_get_section_size (sectp)) | |
9725 | { | |
9726 | bfd *abfd = sectp->owner; | |
9727 | ||
9728 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" | |
9729 | " in section %s [in module %s]"), | |
9730 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
9731 | objfile_name (dwarf2_per_objfile->objfile)); | |
9732 | } | |
9733 | ||
9734 | result.virtual_offset = offset; | |
9735 | result.size = size; | |
9736 | return result; | |
9737 | } | |
9738 | ||
9739 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
9740 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9741 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9742 | This is for DWP version 2 files. */ | |
9743 | ||
9744 | static struct dwo_unit * | |
9745 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
9746 | uint32_t unit_index, | |
9747 | const char *comp_dir, | |
9748 | ULONGEST signature, int is_debug_types) | |
9749 | { | |
9750 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9751 | const struct dwp_hash_table *dwp_htab = | |
9752 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
9753 | bfd *dbfd = dwp_file->dbfd; | |
9754 | const char *kind = is_debug_types ? "TU" : "CU"; | |
9755 | struct dwo_file *dwo_file; | |
9756 | struct dwo_unit *dwo_unit; | |
9757 | struct virtual_v2_dwo_sections sections; | |
9758 | void **dwo_file_slot; | |
9759 | char *virtual_dwo_name; | |
9760 | struct dwarf2_section_info *cutu; | |
9761 | struct cleanup *cleanups; | |
9762 | int i; | |
9763 | ||
9764 | gdb_assert (dwp_file->version == 2); | |
9765 | ||
9766 | if (dwarf2_read_debug) | |
9767 | { | |
9768 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
9769 | kind, | |
9770 | pulongest (unit_index), hex_string (signature), | |
9771 | dwp_file->name); | |
9772 | } | |
9773 | ||
9774 | /* Fetch the section offsets of this DWO unit. */ | |
9775 | ||
9776 | memset (§ions, 0, sizeof (sections)); | |
9777 | cleanups = make_cleanup (null_cleanup, 0); | |
9778 | ||
9779 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
9780 | { | |
9781 | uint32_t offset = read_4_bytes (dbfd, | |
9782 | dwp_htab->section_pool.v2.offsets | |
9783 | + (((unit_index - 1) * dwp_htab->nr_columns | |
9784 | + i) | |
9785 | * sizeof (uint32_t))); | |
9786 | uint32_t size = read_4_bytes (dbfd, | |
9787 | dwp_htab->section_pool.v2.sizes | |
9788 | + (((unit_index - 1) * dwp_htab->nr_columns | |
9789 | + i) | |
9790 | * sizeof (uint32_t))); | |
9791 | ||
9792 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
9793 | { | |
9794 | case DW_SECT_INFO: | |
9795 | case DW_SECT_TYPES: | |
9796 | sections.info_or_types_offset = offset; | |
9797 | sections.info_or_types_size = size; | |
9798 | break; | |
9799 | case DW_SECT_ABBREV: | |
9800 | sections.abbrev_offset = offset; | |
9801 | sections.abbrev_size = size; | |
9802 | break; | |
9803 | case DW_SECT_LINE: | |
9804 | sections.line_offset = offset; | |
9805 | sections.line_size = size; | |
9806 | break; | |
9807 | case DW_SECT_LOC: | |
9808 | sections.loc_offset = offset; | |
9809 | sections.loc_size = size; | |
9810 | break; | |
9811 | case DW_SECT_STR_OFFSETS: | |
9812 | sections.str_offsets_offset = offset; | |
9813 | sections.str_offsets_size = size; | |
9814 | break; | |
9815 | case DW_SECT_MACINFO: | |
9816 | sections.macinfo_offset = offset; | |
9817 | sections.macinfo_size = size; | |
9818 | break; | |
9819 | case DW_SECT_MACRO: | |
9820 | sections.macro_offset = offset; | |
9821 | sections.macro_size = size; | |
9822 | break; | |
9823 | } | |
9824 | } | |
9825 | ||
9826 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
9827 | have dwo_unit "live" in that. At least for now. | |
9828 | ||
9829 | The DWP file can be made up of a random collection of CUs and TUs. | |
9830 | However, for each CU + set of TUs that came from the same original DWO | |
9831 | file, we can combine them back into a virtual DWO file to save space | |
9832 | (fewer struct dwo_file objects to allocate). Remember that for really | |
9833 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
9834 | ||
9835 | virtual_dwo_name = | |
9836 | xstrprintf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
9837 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
9838 | (long) (sections.line_size ? sections.line_offset : 0), | |
9839 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
9840 | (long) (sections.str_offsets_size | |
9841 | ? sections.str_offsets_offset : 0)); | |
9842 | make_cleanup (xfree, virtual_dwo_name); | |
9843 | /* Can we use an existing virtual DWO file? */ | |
9844 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); | |
9845 | /* Create one if necessary. */ | |
9846 | if (*dwo_file_slot == NULL) | |
9847 | { | |
9848 | if (dwarf2_read_debug) | |
9849 | { | |
9850 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
9851 | virtual_dwo_name); | |
9852 | } | |
9853 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
9854 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, | |
9855 | virtual_dwo_name, | |
9856 | strlen (virtual_dwo_name)); | |
9857 | dwo_file->comp_dir = comp_dir; | |
9858 | dwo_file->sections.abbrev = | |
9859 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
9860 | sections.abbrev_offset, sections.abbrev_size); | |
9861 | dwo_file->sections.line = | |
9862 | create_dwp_v2_section (&dwp_file->sections.line, | |
9863 | sections.line_offset, sections.line_size); | |
9864 | dwo_file->sections.loc = | |
9865 | create_dwp_v2_section (&dwp_file->sections.loc, | |
9866 | sections.loc_offset, sections.loc_size); | |
9867 | dwo_file->sections.macinfo = | |
9868 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
9869 | sections.macinfo_offset, sections.macinfo_size); | |
9870 | dwo_file->sections.macro = | |
9871 | create_dwp_v2_section (&dwp_file->sections.macro, | |
9872 | sections.macro_offset, sections.macro_size); | |
9873 | dwo_file->sections.str_offsets = | |
9874 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
9875 | sections.str_offsets_offset, | |
9876 | sections.str_offsets_size); | |
9877 | /* The "str" section is global to the entire DWP file. */ | |
9878 | dwo_file->sections.str = dwp_file->sections.str; | |
9879 | /* The info or types section is assigned below to dwo_unit, | |
9880 | there's no need to record it in dwo_file. | |
9881 | Also, we can't simply record type sections in dwo_file because | |
9882 | we record a pointer into the vector in dwo_unit. As we collect more | |
9883 | types we'll grow the vector and eventually have to reallocate space | |
9884 | for it, invalidating all copies of pointers into the previous | |
9885 | contents. */ | |
9886 | *dwo_file_slot = dwo_file; | |
9887 | } | |
9888 | else | |
9889 | { | |
9890 | if (dwarf2_read_debug) | |
9891 | { | |
9892 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
9893 | virtual_dwo_name); | |
9894 | } | |
9895 | dwo_file = *dwo_file_slot; | |
9896 | } | |
9897 | do_cleanups (cleanups); | |
9898 | ||
9899 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9900 | dwo_unit->dwo_file = dwo_file; | |
9901 | dwo_unit->signature = signature; | |
9902 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, | |
9903 | sizeof (struct dwarf2_section_info)); | |
9904 | *dwo_unit->section = create_dwp_v2_section (is_debug_types | |
9905 | ? &dwp_file->sections.types | |
9906 | : &dwp_file->sections.info, | |
9907 | sections.info_or_types_offset, | |
9908 | sections.info_or_types_size); | |
9909 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
9910 | ||
9911 | return dwo_unit; | |
9912 | } | |
9913 | ||
57d63ce2 DE |
9914 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
9915 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
9916 | |
9917 | static struct dwo_unit * | |
57d63ce2 DE |
9918 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
9919 | ULONGEST signature, int is_debug_types) | |
80626a55 | 9920 | { |
57d63ce2 DE |
9921 | const struct dwp_hash_table *dwp_htab = |
9922 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 9923 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 9924 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
9925 | uint32_t hash = signature & mask; |
9926 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
9927 | unsigned int i; | |
9928 | void **slot; | |
9929 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
9930 | ||
9931 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
9932 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
9933 | slot = htab_find_slot (is_debug_types |
9934 | ? dwp_file->loaded_tus | |
9935 | : dwp_file->loaded_cus, | |
9936 | &find_dwo_cu, INSERT); | |
80626a55 DE |
9937 | |
9938 | if (*slot != NULL) | |
9939 | return *slot; | |
9940 | ||
9941 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 9942 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
9943 | { |
9944 | ULONGEST signature_in_table; | |
9945 | ||
9946 | signature_in_table = | |
57d63ce2 | 9947 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
9948 | if (signature_in_table == signature) |
9949 | { | |
57d63ce2 DE |
9950 | uint32_t unit_index = |
9951 | read_4_bytes (dbfd, | |
9952 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 9953 | |
73869dc2 DE |
9954 | if (dwp_file->version == 1) |
9955 | { | |
9956 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
9957 | comp_dir, signature, | |
9958 | is_debug_types); | |
9959 | } | |
9960 | else | |
9961 | { | |
9962 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
9963 | comp_dir, signature, | |
9964 | is_debug_types); | |
9965 | } | |
80626a55 DE |
9966 | return *slot; |
9967 | } | |
9968 | if (signature_in_table == 0) | |
9969 | return NULL; | |
9970 | hash = (hash + hash2) & mask; | |
9971 | } | |
9972 | ||
9973 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
9974 | " [in module %s]"), | |
9975 | dwp_file->name); | |
9976 | } | |
9977 | ||
ab5088bf | 9978 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
9979 | Open the file specified by FILE_NAME and hand it off to BFD for |
9980 | preliminary analysis. Return a newly initialized bfd *, which | |
9981 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 9982 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
9983 | SEARCH_CWD is true if the current directory is to be searched. |
9984 | It will be searched before debug-file-directory. | |
9985 | If unable to find/open the file, return NULL. | |
3019eac3 DE |
9986 | NOTE: This function is derived from symfile_bfd_open. */ |
9987 | ||
9988 | static bfd * | |
6ac97d4c | 9989 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 DE |
9990 | { |
9991 | bfd *sym_bfd; | |
80626a55 | 9992 | int desc, flags; |
3019eac3 | 9993 | char *absolute_name; |
9c02c129 DE |
9994 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
9995 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
9996 | to debug_file_directory. */ | |
9997 | char *search_path; | |
9998 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
9999 | ||
6ac97d4c DE |
10000 | if (search_cwd) |
10001 | { | |
10002 | if (*debug_file_directory != '\0') | |
10003 | search_path = concat (".", dirname_separator_string, | |
10004 | debug_file_directory, NULL); | |
10005 | else | |
10006 | search_path = xstrdup ("."); | |
10007 | } | |
9c02c129 | 10008 | else |
6ac97d4c | 10009 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 10010 | |
492c0ab7 | 10011 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
10012 | if (is_dwp) |
10013 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 10014 | desc = openp (search_path, flags, file_name, |
3019eac3 | 10015 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 10016 | xfree (search_path); |
3019eac3 DE |
10017 | if (desc < 0) |
10018 | return NULL; | |
10019 | ||
bb397797 | 10020 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
a4453b7e | 10021 | xfree (absolute_name); |
9c02c129 DE |
10022 | if (sym_bfd == NULL) |
10023 | return NULL; | |
3019eac3 DE |
10024 | bfd_set_cacheable (sym_bfd, 1); |
10025 | ||
10026 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
10027 | { | |
cbb099e8 | 10028 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
10029 | return NULL; |
10030 | } | |
10031 | ||
3019eac3 DE |
10032 | return sym_bfd; |
10033 | } | |
10034 | ||
ab5088bf | 10035 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
10036 | COMP_DIR is the DW_AT_comp_dir attribute. |
10037 | The result is the bfd handle of the file. | |
10038 | If there is a problem finding or opening the file, return NULL. | |
10039 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10040 | same as symfile_bfd_open. */ | |
10041 | ||
10042 | static bfd * | |
ab5088bf | 10043 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 DE |
10044 | { |
10045 | bfd *abfd; | |
3019eac3 | 10046 | |
80626a55 | 10047 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 10048 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
10049 | |
10050 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
10051 | ||
10052 | if (comp_dir != NULL) | |
10053 | { | |
80626a55 | 10054 | char *path_to_try = concat (comp_dir, SLASH_STRING, file_name, NULL); |
3019eac3 DE |
10055 | |
10056 | /* NOTE: If comp_dir is a relative path, this will also try the | |
10057 | search path, which seems useful. */ | |
6ac97d4c | 10058 | abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10059 | xfree (path_to_try); |
10060 | if (abfd != NULL) | |
10061 | return abfd; | |
10062 | } | |
10063 | ||
10064 | /* That didn't work, try debug-file-directory, which, despite its name, | |
10065 | is a list of paths. */ | |
10066 | ||
10067 | if (*debug_file_directory == '\0') | |
10068 | return NULL; | |
10069 | ||
6ac97d4c | 10070 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10071 | } |
10072 | ||
80626a55 DE |
10073 | /* This function is mapped across the sections and remembers the offset and |
10074 | size of each of the DWO debugging sections we are interested in. */ | |
10075 | ||
10076 | static void | |
10077 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
10078 | { | |
10079 | struct dwo_sections *dwo_sections = dwo_sections_ptr; | |
10080 | const struct dwop_section_names *names = &dwop_section_names; | |
10081 | ||
10082 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10083 | { | |
73869dc2 | 10084 | dwo_sections->abbrev.s.asection = sectp; |
80626a55 DE |
10085 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
10086 | } | |
10087 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10088 | { | |
73869dc2 | 10089 | dwo_sections->info.s.asection = sectp; |
80626a55 DE |
10090 | dwo_sections->info.size = bfd_get_section_size (sectp); |
10091 | } | |
10092 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10093 | { | |
73869dc2 | 10094 | dwo_sections->line.s.asection = sectp; |
80626a55 DE |
10095 | dwo_sections->line.size = bfd_get_section_size (sectp); |
10096 | } | |
10097 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10098 | { | |
73869dc2 | 10099 | dwo_sections->loc.s.asection = sectp; |
80626a55 DE |
10100 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
10101 | } | |
10102 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10103 | { | |
73869dc2 | 10104 | dwo_sections->macinfo.s.asection = sectp; |
80626a55 DE |
10105 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
10106 | } | |
10107 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10108 | { | |
73869dc2 | 10109 | dwo_sections->macro.s.asection = sectp; |
80626a55 DE |
10110 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
10111 | } | |
10112 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
10113 | { | |
73869dc2 | 10114 | dwo_sections->str.s.asection = sectp; |
80626a55 DE |
10115 | dwo_sections->str.size = bfd_get_section_size (sectp); |
10116 | } | |
10117 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10118 | { | |
73869dc2 | 10119 | dwo_sections->str_offsets.s.asection = sectp; |
80626a55 DE |
10120 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
10121 | } | |
10122 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10123 | { | |
10124 | struct dwarf2_section_info type_section; | |
10125 | ||
10126 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 10127 | type_section.s.asection = sectp; |
80626a55 DE |
10128 | type_section.size = bfd_get_section_size (sectp); |
10129 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
10130 | &type_section); | |
10131 | } | |
10132 | } | |
10133 | ||
ab5088bf | 10134 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 10135 | by PER_CU. This is for the non-DWP case. |
80626a55 | 10136 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
10137 | |
10138 | static struct dwo_file * | |
0ac5b59e DE |
10139 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
10140 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
10141 | { |
10142 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10143 | struct dwo_file *dwo_file; |
10144 | bfd *dbfd; | |
3019eac3 DE |
10145 | struct cleanup *cleanups; |
10146 | ||
ab5088bf | 10147 | dbfd = open_dwo_file (dwo_name, comp_dir); |
80626a55 DE |
10148 | if (dbfd == NULL) |
10149 | { | |
10150 | if (dwarf2_read_debug) | |
10151 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); | |
10152 | return NULL; | |
10153 | } | |
10154 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10155 | dwo_file->dwo_name = dwo_name; |
10156 | dwo_file->comp_dir = comp_dir; | |
80626a55 | 10157 | dwo_file->dbfd = dbfd; |
3019eac3 DE |
10158 | |
10159 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
10160 | ||
80626a55 | 10161 | bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections); |
3019eac3 | 10162 | |
19c3d4c9 | 10163 | dwo_file->cu = create_dwo_cu (dwo_file); |
3019eac3 DE |
10164 | |
10165 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
10166 | dwo_file->sections.types); | |
10167 | ||
10168 | discard_cleanups (cleanups); | |
10169 | ||
80626a55 DE |
10170 | if (dwarf2_read_debug) |
10171 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); | |
10172 | ||
3019eac3 DE |
10173 | return dwo_file; |
10174 | } | |
10175 | ||
80626a55 | 10176 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
10177 | size of each of the DWP debugging sections common to version 1 and 2 that |
10178 | we are interested in. */ | |
3019eac3 | 10179 | |
80626a55 | 10180 | static void |
73869dc2 DE |
10181 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
10182 | void *dwp_file_ptr) | |
3019eac3 | 10183 | { |
80626a55 DE |
10184 | struct dwp_file *dwp_file = dwp_file_ptr; |
10185 | const struct dwop_section_names *names = &dwop_section_names; | |
10186 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 10187 | |
80626a55 | 10188 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 10189 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
10190 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
10191 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 10192 | |
80626a55 DE |
10193 | /* Look for specific sections that we need. */ |
10194 | if (section_is_p (sectp->name, &names->str_dwo)) | |
10195 | { | |
73869dc2 | 10196 | dwp_file->sections.str.s.asection = sectp; |
80626a55 DE |
10197 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
10198 | } | |
10199 | else if (section_is_p (sectp->name, &names->cu_index)) | |
10200 | { | |
73869dc2 | 10201 | dwp_file->sections.cu_index.s.asection = sectp; |
80626a55 DE |
10202 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
10203 | } | |
10204 | else if (section_is_p (sectp->name, &names->tu_index)) | |
10205 | { | |
73869dc2 | 10206 | dwp_file->sections.tu_index.s.asection = sectp; |
80626a55 DE |
10207 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
10208 | } | |
10209 | } | |
3019eac3 | 10210 | |
73869dc2 DE |
10211 | /* This function is mapped across the sections and remembers the offset and |
10212 | size of each of the DWP version 2 debugging sections that we are interested | |
10213 | in. This is split into a separate function because we don't know if we | |
10214 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
10215 | ||
10216 | static void | |
10217 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
10218 | { | |
10219 | struct dwp_file *dwp_file = dwp_file_ptr; | |
10220 | const struct dwop_section_names *names = &dwop_section_names; | |
10221 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
10222 | ||
10223 | /* Record the ELF section number for later lookup: this is what the | |
10224 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
10225 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
10226 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
10227 | ||
10228 | /* Look for specific sections that we need. */ | |
10229 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10230 | { | |
10231 | dwp_file->sections.abbrev.s.asection = sectp; | |
10232 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
10233 | } | |
10234 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10235 | { | |
10236 | dwp_file->sections.info.s.asection = sectp; | |
10237 | dwp_file->sections.info.size = bfd_get_section_size (sectp); | |
10238 | } | |
10239 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10240 | { | |
10241 | dwp_file->sections.line.s.asection = sectp; | |
10242 | dwp_file->sections.line.size = bfd_get_section_size (sectp); | |
10243 | } | |
10244 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10245 | { | |
10246 | dwp_file->sections.loc.s.asection = sectp; | |
10247 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); | |
10248 | } | |
10249 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10250 | { | |
10251 | dwp_file->sections.macinfo.s.asection = sectp; | |
10252 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); | |
10253 | } | |
10254 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10255 | { | |
10256 | dwp_file->sections.macro.s.asection = sectp; | |
10257 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); | |
10258 | } | |
10259 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10260 | { | |
10261 | dwp_file->sections.str_offsets.s.asection = sectp; | |
10262 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
10263 | } | |
10264 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10265 | { | |
10266 | dwp_file->sections.types.s.asection = sectp; | |
10267 | dwp_file->sections.types.size = bfd_get_section_size (sectp); | |
10268 | } | |
10269 | } | |
10270 | ||
80626a55 | 10271 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10272 | |
80626a55 DE |
10273 | static hashval_t |
10274 | hash_dwp_loaded_cutus (const void *item) | |
10275 | { | |
10276 | const struct dwo_unit *dwo_unit = item; | |
3019eac3 | 10277 | |
80626a55 DE |
10278 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
10279 | return dwo_unit->signature; | |
3019eac3 DE |
10280 | } |
10281 | ||
80626a55 | 10282 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10283 | |
80626a55 DE |
10284 | static int |
10285 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 10286 | { |
80626a55 DE |
10287 | const struct dwo_unit *dua = a; |
10288 | const struct dwo_unit *dub = b; | |
3019eac3 | 10289 | |
80626a55 DE |
10290 | return dua->signature == dub->signature; |
10291 | } | |
3019eac3 | 10292 | |
80626a55 | 10293 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10294 | |
80626a55 DE |
10295 | static htab_t |
10296 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
10297 | { | |
10298 | return htab_create_alloc_ex (3, | |
10299 | hash_dwp_loaded_cutus, | |
10300 | eq_dwp_loaded_cutus, | |
10301 | NULL, | |
10302 | &objfile->objfile_obstack, | |
10303 | hashtab_obstack_allocate, | |
10304 | dummy_obstack_deallocate); | |
10305 | } | |
3019eac3 | 10306 | |
ab5088bf DE |
10307 | /* Try to open DWP file FILE_NAME. |
10308 | The result is the bfd handle of the file. | |
10309 | If there is a problem finding or opening the file, return NULL. | |
10310 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10311 | same as symfile_bfd_open. */ | |
10312 | ||
10313 | static bfd * | |
10314 | open_dwp_file (const char *file_name) | |
10315 | { | |
6ac97d4c DE |
10316 | bfd *abfd; |
10317 | ||
10318 | abfd = try_open_dwop_file (file_name, 1 /*is_dwp*/, 1 /*search_cwd*/); | |
10319 | if (abfd != NULL) | |
10320 | return abfd; | |
10321 | ||
10322 | /* Work around upstream bug 15652. | |
10323 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
10324 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
10325 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
10326 | of the executable's path may have discarded the needed info. | |
10327 | [IWBN if the dwp file name was recorded in the executable, akin to | |
10328 | .gnu_debuglink, but that doesn't exist yet.] | |
10329 | Strip the directory from FILE_NAME and search again. */ | |
10330 | if (*debug_file_directory != '\0') | |
10331 | { | |
10332 | /* Don't implicitly search the current directory here. | |
10333 | If the user wants to search "." to handle this case, | |
10334 | it must be added to debug-file-directory. */ | |
10335 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
10336 | 0 /*search_cwd*/); | |
10337 | } | |
10338 | ||
10339 | return NULL; | |
ab5088bf DE |
10340 | } |
10341 | ||
80626a55 DE |
10342 | /* Initialize the use of the DWP file for the current objfile. |
10343 | By convention the name of the DWP file is ${objfile}.dwp. | |
10344 | The result is NULL if it can't be found. */ | |
a766d390 | 10345 | |
80626a55 | 10346 | static struct dwp_file * |
ab5088bf | 10347 | open_and_init_dwp_file (void) |
80626a55 DE |
10348 | { |
10349 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10350 | struct dwp_file *dwp_file; | |
10351 | char *dwp_name; | |
10352 | bfd *dbfd; | |
10353 | struct cleanup *cleanups; | |
10354 | ||
82bf32bc JK |
10355 | /* Try to find first .dwp for the binary file before any symbolic links |
10356 | resolving. */ | |
10357 | dwp_name = xstrprintf ("%s.dwp", objfile->original_name); | |
80626a55 DE |
10358 | cleanups = make_cleanup (xfree, dwp_name); |
10359 | ||
ab5088bf | 10360 | dbfd = open_dwp_file (dwp_name); |
82bf32bc JK |
10361 | if (dbfd == NULL |
10362 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
10363 | { | |
10364 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
10365 | dwp_name = xstrprintf ("%s.dwp", objfile_name (objfile)); | |
10366 | make_cleanup (xfree, dwp_name); | |
10367 | dbfd = open_dwp_file (dwp_name); | |
10368 | } | |
10369 | ||
80626a55 DE |
10370 | if (dbfd == NULL) |
10371 | { | |
10372 | if (dwarf2_read_debug) | |
10373 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); | |
10374 | do_cleanups (cleanups); | |
10375 | return NULL; | |
3019eac3 | 10376 | } |
80626a55 | 10377 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
93417882 | 10378 | dwp_file->name = bfd_get_filename (dbfd); |
80626a55 DE |
10379 | dwp_file->dbfd = dbfd; |
10380 | do_cleanups (cleanups); | |
c906108c | 10381 | |
80626a55 DE |
10382 | /* +1: section 0 is unused */ |
10383 | dwp_file->num_sections = bfd_count_sections (dbfd) + 1; | |
10384 | dwp_file->elf_sections = | |
10385 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
10386 | dwp_file->num_sections, asection *); | |
10387 | ||
73869dc2 | 10388 | bfd_map_over_sections (dbfd, dwarf2_locate_common_dwp_sections, dwp_file); |
80626a55 DE |
10389 | |
10390 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
10391 | ||
10392 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
10393 | ||
73869dc2 DE |
10394 | /* The DWP file version is stored in the hash table. Oh well. */ |
10395 | if (dwp_file->cus->version != dwp_file->tus->version) | |
10396 | { | |
10397 | /* Technically speaking, we should try to limp along, but this is | |
10398 | pretty bizarre. */ | |
10399 | error (_("Dwarf Error: DWP file CU version %d doesn't match" | |
10400 | " TU version %d [in DWP file %s]"), | |
10401 | dwp_file->cus->version, dwp_file->tus->version, dwp_name); | |
10402 | } | |
10403 | dwp_file->version = dwp_file->cus->version; | |
10404 | ||
10405 | if (dwp_file->version == 2) | |
10406 | bfd_map_over_sections (dbfd, dwarf2_locate_v2_dwp_sections, dwp_file); | |
10407 | ||
19ac8c2e DE |
10408 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
10409 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 10410 | |
80626a55 DE |
10411 | if (dwarf2_read_debug) |
10412 | { | |
10413 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
10414 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
10415 | " %s CUs, %s TUs\n", |
10416 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
10417 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
10418 | } |
10419 | ||
10420 | return dwp_file; | |
3019eac3 | 10421 | } |
c906108c | 10422 | |
ab5088bf DE |
10423 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
10424 | ||
10425 | static struct dwp_file * | |
10426 | get_dwp_file (void) | |
10427 | { | |
10428 | if (! dwarf2_per_objfile->dwp_checked) | |
10429 | { | |
10430 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
10431 | dwarf2_per_objfile->dwp_checked = 1; | |
10432 | } | |
10433 | return dwarf2_per_objfile->dwp_file; | |
10434 | } | |
10435 | ||
80626a55 DE |
10436 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
10437 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
10438 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 10439 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
10440 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
10441 | ||
10442 | This is called, for example, when wanting to read a variable with a | |
10443 | complex location. Therefore we don't want to do file i/o for every call. | |
10444 | Therefore we don't want to look for a DWO file on every call. | |
10445 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
10446 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
10447 | for a DWO file. | |
10448 | ||
1c658ad5 | 10449 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 10450 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 10451 | |
3019eac3 | 10452 | static struct dwo_unit * |
80626a55 DE |
10453 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
10454 | const char *dwo_name, const char *comp_dir, | |
10455 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
10456 | { |
10457 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10458 | const char *kind = is_debug_types ? "TU" : "CU"; |
10459 | void **dwo_file_slot; | |
3019eac3 | 10460 | struct dwo_file *dwo_file; |
80626a55 | 10461 | struct dwp_file *dwp_file; |
cb1df416 | 10462 | |
6a506a2d DE |
10463 | /* First see if there's a DWP file. |
10464 | If we have a DWP file but didn't find the DWO inside it, don't | |
10465 | look for the original DWO file. It makes gdb behave differently | |
10466 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 10467 | |
ab5088bf | 10468 | dwp_file = get_dwp_file (); |
80626a55 | 10469 | if (dwp_file != NULL) |
cf2c3c16 | 10470 | { |
80626a55 DE |
10471 | const struct dwp_hash_table *dwp_htab = |
10472 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10473 | ||
10474 | if (dwp_htab != NULL) | |
10475 | { | |
10476 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
10477 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
10478 | signature, is_debug_types); | |
80626a55 DE |
10479 | |
10480 | if (dwo_cutu != NULL) | |
10481 | { | |
10482 | if (dwarf2_read_debug) | |
10483 | { | |
10484 | fprintf_unfiltered (gdb_stdlog, | |
10485 | "Virtual DWO %s %s found: @%s\n", | |
10486 | kind, hex_string (signature), | |
10487 | host_address_to_string (dwo_cutu)); | |
10488 | } | |
10489 | return dwo_cutu; | |
10490 | } | |
10491 | } | |
10492 | } | |
6a506a2d | 10493 | else |
80626a55 | 10494 | { |
6a506a2d | 10495 | /* No DWP file, look for the DWO file. */ |
80626a55 | 10496 | |
6a506a2d DE |
10497 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
10498 | if (*dwo_file_slot == NULL) | |
80626a55 | 10499 | { |
6a506a2d DE |
10500 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
10501 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 10502 | } |
6a506a2d DE |
10503 | /* NOTE: This will be NULL if unable to open the file. */ |
10504 | dwo_file = *dwo_file_slot; | |
3019eac3 | 10505 | |
6a506a2d | 10506 | if (dwo_file != NULL) |
19c3d4c9 | 10507 | { |
6a506a2d DE |
10508 | struct dwo_unit *dwo_cutu = NULL; |
10509 | ||
10510 | if (is_debug_types && dwo_file->tus) | |
10511 | { | |
10512 | struct dwo_unit find_dwo_cutu; | |
10513 | ||
10514 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
10515 | find_dwo_cutu.signature = signature; | |
10516 | dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu); | |
10517 | } | |
10518 | else if (!is_debug_types && dwo_file->cu) | |
80626a55 | 10519 | { |
6a506a2d DE |
10520 | if (signature == dwo_file->cu->signature) |
10521 | dwo_cutu = dwo_file->cu; | |
10522 | } | |
10523 | ||
10524 | if (dwo_cutu != NULL) | |
10525 | { | |
10526 | if (dwarf2_read_debug) | |
10527 | { | |
10528 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
10529 | kind, dwo_name, hex_string (signature), | |
10530 | host_address_to_string (dwo_cutu)); | |
10531 | } | |
10532 | return dwo_cutu; | |
80626a55 DE |
10533 | } |
10534 | } | |
2e276125 | 10535 | } |
9cdd5dbd | 10536 | |
80626a55 DE |
10537 | /* We didn't find it. This could mean a dwo_id mismatch, or |
10538 | someone deleted the DWO/DWP file, or the search path isn't set up | |
10539 | correctly to find the file. */ | |
10540 | ||
10541 | if (dwarf2_read_debug) | |
10542 | { | |
10543 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
10544 | kind, dwo_name, hex_string (signature)); | |
10545 | } | |
3019eac3 | 10546 | |
6656a72d DE |
10547 | /* This is a warning and not a complaint because it can be caused by |
10548 | pilot error (e.g., user accidentally deleting the DWO). */ | |
10549 | warning (_("Could not find DWO %s %s(%s) referenced by %s at offset 0x%x" | |
10550 | " [in module %s]"), | |
10551 | kind, dwo_name, hex_string (signature), | |
10552 | this_unit->is_debug_types ? "TU" : "CU", | |
4262abfb | 10553 | this_unit->offset.sect_off, objfile_name (objfile)); |
3019eac3 | 10554 | return NULL; |
5fb290d7 DJ |
10555 | } |
10556 | ||
80626a55 DE |
10557 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
10558 | See lookup_dwo_cutu_unit for details. */ | |
10559 | ||
10560 | static struct dwo_unit * | |
10561 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
10562 | const char *dwo_name, const char *comp_dir, | |
10563 | ULONGEST signature) | |
10564 | { | |
10565 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
10566 | } | |
10567 | ||
10568 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
10569 | See lookup_dwo_cutu_unit for details. */ | |
10570 | ||
10571 | static struct dwo_unit * | |
10572 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
10573 | const char *dwo_name, const char *comp_dir) | |
10574 | { | |
10575 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
10576 | } | |
10577 | ||
89e63ee4 DE |
10578 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
10579 | ||
10580 | static int | |
10581 | queue_and_load_dwo_tu (void **slot, void *info) | |
10582 | { | |
10583 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
10584 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
10585 | ULONGEST signature = dwo_unit->signature; | |
10586 | struct signatured_type *sig_type = | |
10587 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
10588 | ||
10589 | if (sig_type != NULL) | |
10590 | { | |
10591 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
10592 | ||
10593 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
10594 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
10595 | while processing PER_CU. */ | |
10596 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
10597 | load_full_type_unit (sig_cu); | |
10598 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
10599 | } | |
10600 | ||
10601 | return 1; | |
10602 | } | |
10603 | ||
10604 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
10605 | The DWO may have the only definition of the type, though it may not be | |
10606 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
10607 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
10608 | ||
10609 | static void | |
10610 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
10611 | { | |
10612 | struct dwo_unit *dwo_unit; | |
10613 | struct dwo_file *dwo_file; | |
10614 | ||
10615 | gdb_assert (!per_cu->is_debug_types); | |
10616 | gdb_assert (get_dwp_file () == NULL); | |
10617 | gdb_assert (per_cu->cu != NULL); | |
10618 | ||
10619 | dwo_unit = per_cu->cu->dwo_unit; | |
10620 | gdb_assert (dwo_unit != NULL); | |
10621 | ||
10622 | dwo_file = dwo_unit->dwo_file; | |
10623 | if (dwo_file->tus != NULL) | |
10624 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
10625 | } | |
10626 | ||
3019eac3 DE |
10627 | /* Free all resources associated with DWO_FILE. |
10628 | Close the DWO file and munmap the sections. | |
10629 | All memory should be on the objfile obstack. */ | |
348e048f DE |
10630 | |
10631 | static void | |
3019eac3 | 10632 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 10633 | { |
3019eac3 DE |
10634 | int ix; |
10635 | struct dwarf2_section_info *section; | |
348e048f | 10636 | |
5c6fa7ab | 10637 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 10638 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 10639 | |
3019eac3 DE |
10640 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
10641 | } | |
348e048f | 10642 | |
3019eac3 | 10643 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 10644 | |
3019eac3 DE |
10645 | static void |
10646 | free_dwo_file_cleanup (void *arg) | |
10647 | { | |
10648 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
10649 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 10650 | |
3019eac3 DE |
10651 | free_dwo_file (dwo_file, objfile); |
10652 | } | |
348e048f | 10653 | |
3019eac3 | 10654 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 10655 | |
3019eac3 DE |
10656 | static int |
10657 | free_dwo_file_from_slot (void **slot, void *info) | |
10658 | { | |
10659 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
10660 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 10661 | |
3019eac3 | 10662 | free_dwo_file (dwo_file, objfile); |
348e048f | 10663 | |
3019eac3 DE |
10664 | return 1; |
10665 | } | |
348e048f | 10666 | |
3019eac3 | 10667 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 10668 | |
3019eac3 DE |
10669 | static void |
10670 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
10671 | { | |
10672 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 10673 | } |
3019eac3 DE |
10674 | \f |
10675 | /* Read in various DIEs. */ | |
348e048f | 10676 | |
d389af10 JK |
10677 | /* qsort helper for inherit_abstract_dies. */ |
10678 | ||
10679 | static int | |
10680 | unsigned_int_compar (const void *ap, const void *bp) | |
10681 | { | |
10682 | unsigned int a = *(unsigned int *) ap; | |
10683 | unsigned int b = *(unsigned int *) bp; | |
10684 | ||
10685 | return (a > b) - (b > a); | |
10686 | } | |
10687 | ||
10688 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
10689 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
10690 | already referenced by DW_AT_abstract_origin from the children of the | |
10691 | current DIE. */ | |
d389af10 JK |
10692 | |
10693 | static void | |
10694 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
10695 | { | |
10696 | struct die_info *child_die; | |
10697 | unsigned die_children_count; | |
10698 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
10699 | sect_offset *offsets; |
10700 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
10701 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
10702 | struct die_info *origin_die; | |
10703 | /* Iterator of the ORIGIN_DIE children. */ | |
10704 | struct die_info *origin_child_die; | |
10705 | struct cleanup *cleanups; | |
10706 | struct attribute *attr; | |
cd02d79d PA |
10707 | struct dwarf2_cu *origin_cu; |
10708 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
10709 | |
10710 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
10711 | if (!attr) | |
10712 | return; | |
10713 | ||
cd02d79d PA |
10714 | /* Note that following die references may follow to a die in a |
10715 | different cu. */ | |
10716 | ||
10717 | origin_cu = cu; | |
10718 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
10719 | ||
10720 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
10721 | symbols in. */ | |
10722 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
10723 | origin_cu->list_in_scope = cu->list_in_scope; | |
10724 | ||
edb3359d DJ |
10725 | if (die->tag != origin_die->tag |
10726 | && !(die->tag == DW_TAG_inlined_subroutine | |
10727 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
10728 | complaint (&symfile_complaints, |
10729 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 10730 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
10731 | |
10732 | child_die = die->child; | |
10733 | die_children_count = 0; | |
10734 | while (child_die && child_die->tag) | |
10735 | { | |
10736 | child_die = sibling_die (child_die); | |
10737 | die_children_count++; | |
10738 | } | |
10739 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
10740 | cleanups = make_cleanup (xfree, offsets); | |
10741 | ||
10742 | offsets_end = offsets; | |
10743 | child_die = die->child; | |
10744 | while (child_die && child_die->tag) | |
10745 | { | |
c38f313d DJ |
10746 | /* For each CHILD_DIE, find the corresponding child of |
10747 | ORIGIN_DIE. If there is more than one layer of | |
10748 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
10749 | but GCC versions at least through 4.4 generate this (GCC PR | |
10750 | 40573). */ | |
10751 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 10752 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 10753 | |
c38f313d DJ |
10754 | while (1) |
10755 | { | |
cd02d79d PA |
10756 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
10757 | child_origin_cu); | |
c38f313d DJ |
10758 | if (attr == NULL) |
10759 | break; | |
cd02d79d PA |
10760 | child_origin_die = follow_die_ref (child_origin_die, attr, |
10761 | &child_origin_cu); | |
c38f313d DJ |
10762 | } |
10763 | ||
d389af10 JK |
10764 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
10765 | counterpart may exist. */ | |
c38f313d | 10766 | if (child_origin_die != child_die) |
d389af10 | 10767 | { |
edb3359d DJ |
10768 | if (child_die->tag != child_origin_die->tag |
10769 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
10770 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
10771 | complaint (&symfile_complaints, |
10772 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
10773 | "different tags"), child_die->offset.sect_off, |
10774 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
10775 | if (child_origin_die->parent != origin_die) |
10776 | complaint (&symfile_complaints, | |
10777 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
10778 | "different parents"), child_die->offset.sect_off, |
10779 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
10780 | else |
10781 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
10782 | } |
10783 | child_die = sibling_die (child_die); | |
10784 | } | |
10785 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
10786 | unsigned_int_compar); | |
10787 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 10788 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
10789 | complaint (&symfile_complaints, |
10790 | _("Multiple children of DIE 0x%x refer " | |
10791 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 10792 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
10793 | |
10794 | offsetp = offsets; | |
10795 | origin_child_die = origin_die->child; | |
10796 | while (origin_child_die && origin_child_die->tag) | |
10797 | { | |
10798 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
10799 | while (offsetp < offsets_end |
10800 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 10801 | offsetp++; |
b64f50a1 JK |
10802 | if (offsetp >= offsets_end |
10803 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
10804 | { |
10805 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 10806 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
10807 | } |
10808 | origin_child_die = sibling_die (origin_child_die); | |
10809 | } | |
cd02d79d | 10810 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
10811 | |
10812 | do_cleanups (cleanups); | |
10813 | } | |
10814 | ||
c906108c | 10815 | static void |
e7c27a73 | 10816 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10817 | { |
e7c27a73 | 10818 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 10819 | struct context_stack *new; |
c906108c SS |
10820 | CORE_ADDR lowpc; |
10821 | CORE_ADDR highpc; | |
10822 | struct die_info *child_die; | |
edb3359d | 10823 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 10824 | const char *name; |
e142c38c | 10825 | CORE_ADDR baseaddr; |
801e3a5b | 10826 | struct block *block; |
edb3359d | 10827 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
10828 | VEC (symbolp) *template_args = NULL; |
10829 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
10830 | |
10831 | if (inlined_func) | |
10832 | { | |
10833 | /* If we do not have call site information, we can't show the | |
10834 | caller of this inlined function. That's too confusing, so | |
10835 | only use the scope for local variables. */ | |
10836 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
10837 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
10838 | if (call_line == NULL || call_file == NULL) | |
10839 | { | |
10840 | read_lexical_block_scope (die, cu); | |
10841 | return; | |
10842 | } | |
10843 | } | |
c906108c | 10844 | |
e142c38c DJ |
10845 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
10846 | ||
94af9270 | 10847 | name = dwarf2_name (die, cu); |
c906108c | 10848 | |
e8d05480 JB |
10849 | /* Ignore functions with missing or empty names. These are actually |
10850 | illegal according to the DWARF standard. */ | |
10851 | if (name == NULL) | |
10852 | { | |
10853 | complaint (&symfile_complaints, | |
b64f50a1 JK |
10854 | _("missing name for subprogram DIE at %d"), |
10855 | die->offset.sect_off); | |
e8d05480 JB |
10856 | return; |
10857 | } | |
10858 | ||
10859 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
10860 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
10861 | { | |
ae4d0c03 PM |
10862 | attr = dwarf2_attr (die, DW_AT_external, cu); |
10863 | if (!attr || !DW_UNSND (attr)) | |
10864 | complaint (&symfile_complaints, | |
3e43a32a MS |
10865 | _("cannot get low and high bounds " |
10866 | "for subprogram DIE at %d"), | |
b64f50a1 | 10867 | die->offset.sect_off); |
e8d05480 JB |
10868 | return; |
10869 | } | |
c906108c SS |
10870 | |
10871 | lowpc += baseaddr; | |
10872 | highpc += baseaddr; | |
10873 | ||
34eaf542 TT |
10874 | /* If we have any template arguments, then we must allocate a |
10875 | different sort of symbol. */ | |
10876 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
10877 | { | |
10878 | if (child_die->tag == DW_TAG_template_type_param | |
10879 | || child_die->tag == DW_TAG_template_value_param) | |
10880 | { | |
e623cf5d | 10881 | templ_func = allocate_template_symbol (objfile); |
34eaf542 TT |
10882 | templ_func->base.is_cplus_template_function = 1; |
10883 | break; | |
10884 | } | |
10885 | } | |
10886 | ||
c906108c | 10887 | new = push_context (0, lowpc); |
34eaf542 TT |
10888 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
10889 | (struct symbol *) templ_func); | |
4c2df51b | 10890 | |
4cecd739 DJ |
10891 | /* If there is a location expression for DW_AT_frame_base, record |
10892 | it. */ | |
e142c38c | 10893 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 10894 | if (attr) |
f1e6e072 | 10895 | dwarf2_symbol_mark_computed (attr, new->name, cu, 1); |
4c2df51b | 10896 | |
e142c38c | 10897 | cu->list_in_scope = &local_symbols; |
c906108c | 10898 | |
639d11d3 | 10899 | if (die->child != NULL) |
c906108c | 10900 | { |
639d11d3 | 10901 | child_die = die->child; |
c906108c SS |
10902 | while (child_die && child_die->tag) |
10903 | { | |
34eaf542 TT |
10904 | if (child_die->tag == DW_TAG_template_type_param |
10905 | || child_die->tag == DW_TAG_template_value_param) | |
10906 | { | |
10907 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
10908 | ||
f1078f66 DJ |
10909 | if (arg != NULL) |
10910 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
10911 | } |
10912 | else | |
10913 | process_die (child_die, cu); | |
c906108c SS |
10914 | child_die = sibling_die (child_die); |
10915 | } | |
10916 | } | |
10917 | ||
d389af10 JK |
10918 | inherit_abstract_dies (die, cu); |
10919 | ||
4a811a97 UW |
10920 | /* If we have a DW_AT_specification, we might need to import using |
10921 | directives from the context of the specification DIE. See the | |
10922 | comment in determine_prefix. */ | |
10923 | if (cu->language == language_cplus | |
10924 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
10925 | { | |
10926 | struct dwarf2_cu *spec_cu = cu; | |
10927 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
10928 | ||
10929 | while (spec_die) | |
10930 | { | |
10931 | child_die = spec_die->child; | |
10932 | while (child_die && child_die->tag) | |
10933 | { | |
10934 | if (child_die->tag == DW_TAG_imported_module) | |
10935 | process_die (child_die, spec_cu); | |
10936 | child_die = sibling_die (child_die); | |
10937 | } | |
10938 | ||
10939 | /* In some cases, GCC generates specification DIEs that | |
10940 | themselves contain DW_AT_specification attributes. */ | |
10941 | spec_die = die_specification (spec_die, &spec_cu); | |
10942 | } | |
10943 | } | |
10944 | ||
c906108c SS |
10945 | new = pop_context (); |
10946 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
10947 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
10948 | lowpc, highpc, objfile); | |
10949 | ||
df8a16a1 | 10950 | /* For C++, set the block's scope. */ |
195a3f6c | 10951 | if ((cu->language == language_cplus || cu->language == language_fortran) |
4d4ec4e5 | 10952 | && cu->processing_has_namespace_info) |
195a3f6c TT |
10953 | block_set_scope (block, determine_prefix (die, cu), |
10954 | &objfile->objfile_obstack); | |
df8a16a1 | 10955 | |
801e3a5b JB |
10956 | /* If we have address ranges, record them. */ |
10957 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 10958 | |
34eaf542 TT |
10959 | /* Attach template arguments to function. */ |
10960 | if (! VEC_empty (symbolp, template_args)) | |
10961 | { | |
10962 | gdb_assert (templ_func != NULL); | |
10963 | ||
10964 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
10965 | templ_func->template_arguments | |
10966 | = obstack_alloc (&objfile->objfile_obstack, | |
10967 | (templ_func->n_template_arguments | |
10968 | * sizeof (struct symbol *))); | |
10969 | memcpy (templ_func->template_arguments, | |
10970 | VEC_address (symbolp, template_args), | |
10971 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
10972 | VEC_free (symbolp, template_args); | |
10973 | } | |
10974 | ||
208d8187 JB |
10975 | /* In C++, we can have functions nested inside functions (e.g., when |
10976 | a function declares a class that has methods). This means that | |
10977 | when we finish processing a function scope, we may need to go | |
10978 | back to building a containing block's symbol lists. */ | |
10979 | local_symbols = new->locals; | |
27aa8d6a | 10980 | using_directives = new->using_directives; |
208d8187 | 10981 | |
921e78cf JB |
10982 | /* If we've finished processing a top-level function, subsequent |
10983 | symbols go in the file symbol list. */ | |
10984 | if (outermost_context_p ()) | |
e142c38c | 10985 | cu->list_in_scope = &file_symbols; |
c906108c SS |
10986 | } |
10987 | ||
10988 | /* Process all the DIES contained within a lexical block scope. Start | |
10989 | a new scope, process the dies, and then close the scope. */ | |
10990 | ||
10991 | static void | |
e7c27a73 | 10992 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10993 | { |
e7c27a73 | 10994 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 10995 | struct context_stack *new; |
c906108c SS |
10996 | CORE_ADDR lowpc, highpc; |
10997 | struct die_info *child_die; | |
e142c38c DJ |
10998 | CORE_ADDR baseaddr; |
10999 | ||
11000 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
11001 | |
11002 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
11003 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
11004 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 11005 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 11006 | describe ranges. */ |
d85a05f0 | 11007 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
11008 | return; |
11009 | lowpc += baseaddr; | |
11010 | highpc += baseaddr; | |
11011 | ||
11012 | push_context (0, lowpc); | |
639d11d3 | 11013 | if (die->child != NULL) |
c906108c | 11014 | { |
639d11d3 | 11015 | child_die = die->child; |
c906108c SS |
11016 | while (child_die && child_die->tag) |
11017 | { | |
e7c27a73 | 11018 | process_die (child_die, cu); |
c906108c SS |
11019 | child_die = sibling_die (child_die); |
11020 | } | |
11021 | } | |
11022 | new = pop_context (); | |
11023 | ||
8540c487 | 11024 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 11025 | { |
801e3a5b JB |
11026 | struct block *block |
11027 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
11028 | highpc, objfile); | |
11029 | ||
11030 | /* Note that recording ranges after traversing children, as we | |
11031 | do here, means that recording a parent's ranges entails | |
11032 | walking across all its children's ranges as they appear in | |
11033 | the address map, which is quadratic behavior. | |
11034 | ||
11035 | It would be nicer to record the parent's ranges before | |
11036 | traversing its children, simply overriding whatever you find | |
11037 | there. But since we don't even decide whether to create a | |
11038 | block until after we've traversed its children, that's hard | |
11039 | to do. */ | |
11040 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
11041 | } |
11042 | local_symbols = new->locals; | |
27aa8d6a | 11043 | using_directives = new->using_directives; |
c906108c SS |
11044 | } |
11045 | ||
96408a79 SA |
11046 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
11047 | ||
11048 | static void | |
11049 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11050 | { | |
11051 | struct objfile *objfile = cu->objfile; | |
11052 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11053 | CORE_ADDR pc, baseaddr; | |
11054 | struct attribute *attr; | |
11055 | struct call_site *call_site, call_site_local; | |
11056 | void **slot; | |
11057 | int nparams; | |
11058 | struct die_info *child_die; | |
11059 | ||
11060 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
11061 | ||
11062 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
11063 | if (!attr) | |
11064 | { | |
11065 | complaint (&symfile_complaints, | |
11066 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
11067 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11068 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11069 | return; |
11070 | } | |
11071 | pc = DW_ADDR (attr) + baseaddr; | |
11072 | ||
11073 | if (cu->call_site_htab == NULL) | |
11074 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
11075 | NULL, &objfile->objfile_obstack, | |
11076 | hashtab_obstack_allocate, NULL); | |
11077 | call_site_local.pc = pc; | |
11078 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
11079 | if (*slot != NULL) | |
11080 | { | |
11081 | complaint (&symfile_complaints, | |
11082 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
11083 | "DIE 0x%x [in module %s]"), | |
4262abfb JK |
11084 | paddress (gdbarch, pc), die->offset.sect_off, |
11085 | objfile_name (objfile)); | |
96408a79 SA |
11086 | return; |
11087 | } | |
11088 | ||
11089 | /* Count parameters at the caller. */ | |
11090 | ||
11091 | nparams = 0; | |
11092 | for (child_die = die->child; child_die && child_die->tag; | |
11093 | child_die = sibling_die (child_die)) | |
11094 | { | |
11095 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11096 | { | |
11097 | complaint (&symfile_complaints, | |
11098 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
11099 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb JK |
11100 | child_die->tag, child_die->offset.sect_off, |
11101 | objfile_name (objfile)); | |
96408a79 SA |
11102 | continue; |
11103 | } | |
11104 | ||
11105 | nparams++; | |
11106 | } | |
11107 | ||
11108 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
11109 | (sizeof (*call_site) | |
11110 | + (sizeof (*call_site->parameter) | |
11111 | * (nparams - 1)))); | |
11112 | *slot = call_site; | |
11113 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
11114 | call_site->pc = pc; | |
11115 | ||
11116 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
11117 | { | |
11118 | struct die_info *func_die; | |
11119 | ||
11120 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
11121 | for (func_die = die->parent; | |
11122 | func_die && func_die->tag != DW_TAG_subprogram | |
11123 | && func_die->tag != DW_TAG_subroutine_type; | |
11124 | func_die = func_die->parent); | |
11125 | ||
11126 | /* DW_AT_GNU_all_call_sites is a superset | |
11127 | of DW_AT_GNU_all_tail_call_sites. */ | |
11128 | if (func_die | |
11129 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
11130 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
11131 | { | |
11132 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
11133 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
11134 | both the initial caller containing the real return address PC and | |
11135 | the final callee containing the current PC of a chain of tail | |
11136 | calls do not need to have the tail call list complete. But any | |
11137 | function candidate for a virtual tail call frame searched via | |
11138 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
11139 | determined unambiguously. */ | |
11140 | } | |
11141 | else | |
11142 | { | |
11143 | struct type *func_type = NULL; | |
11144 | ||
11145 | if (func_die) | |
11146 | func_type = get_die_type (func_die, cu); | |
11147 | if (func_type != NULL) | |
11148 | { | |
11149 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
11150 | ||
11151 | /* Enlist this call site to the function. */ | |
11152 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
11153 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
11154 | } | |
11155 | else | |
11156 | complaint (&symfile_complaints, | |
11157 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
11158 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11159 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11160 | } |
11161 | } | |
11162 | ||
11163 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
11164 | if (attr == NULL) | |
11165 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11166 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
11167 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
11168 | /* Keep NULL DWARF_BLOCK. */; | |
11169 | else if (attr_form_is_block (attr)) | |
11170 | { | |
11171 | struct dwarf2_locexpr_baton *dlbaton; | |
11172 | ||
11173 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
11174 | dlbaton->data = DW_BLOCK (attr)->data; | |
11175 | dlbaton->size = DW_BLOCK (attr)->size; | |
11176 | dlbaton->per_cu = cu->per_cu; | |
11177 | ||
11178 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
11179 | } | |
7771576e | 11180 | else if (attr_form_is_ref (attr)) |
96408a79 | 11181 | { |
96408a79 SA |
11182 | struct dwarf2_cu *target_cu = cu; |
11183 | struct die_info *target_die; | |
11184 | ||
ac9ec31b | 11185 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
11186 | gdb_assert (target_cu->objfile == objfile); |
11187 | if (die_is_declaration (target_die, target_cu)) | |
11188 | { | |
9112db09 JK |
11189 | const char *target_physname = NULL; |
11190 | struct attribute *target_attr; | |
11191 | ||
11192 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
11193 | target_attr = dwarf2_attr (target_die, DW_AT_linkage_name, target_cu); | |
11194 | if (target_attr == NULL) | |
11195 | target_attr = dwarf2_attr (target_die, DW_AT_MIPS_linkage_name, | |
11196 | target_cu); | |
11197 | if (target_attr != NULL && DW_STRING (target_attr) != NULL) | |
11198 | target_physname = DW_STRING (target_attr); | |
11199 | else | |
11200 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
96408a79 SA |
11201 | if (target_physname == NULL) |
11202 | complaint (&symfile_complaints, | |
11203 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11204 | "physname, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11205 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11206 | else |
7d455152 | 11207 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
11208 | } |
11209 | else | |
11210 | { | |
11211 | CORE_ADDR lowpc; | |
11212 | ||
11213 | /* DW_AT_entry_pc should be preferred. */ | |
11214 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
11215 | complaint (&symfile_complaints, | |
11216 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11217 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11218 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11219 | else |
11220 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
11221 | } | |
11222 | } | |
11223 | else | |
11224 | complaint (&symfile_complaints, | |
11225 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
11226 | "block nor reference, for DIE 0x%x [in module %s]"), | |
4262abfb | 11227 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11228 | |
11229 | call_site->per_cu = cu->per_cu; | |
11230 | ||
11231 | for (child_die = die->child; | |
11232 | child_die && child_die->tag; | |
11233 | child_die = sibling_die (child_die)) | |
11234 | { | |
96408a79 | 11235 | struct call_site_parameter *parameter; |
1788b2d3 | 11236 | struct attribute *loc, *origin; |
96408a79 SA |
11237 | |
11238 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11239 | { | |
11240 | /* Already printed the complaint above. */ | |
11241 | continue; | |
11242 | } | |
11243 | ||
11244 | gdb_assert (call_site->parameter_count < nparams); | |
11245 | parameter = &call_site->parameter[call_site->parameter_count]; | |
11246 | ||
1788b2d3 JK |
11247 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
11248 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
11249 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 11250 | |
24c5c679 | 11251 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 | 11252 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
7771576e | 11253 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 JK |
11254 | { |
11255 | sect_offset offset; | |
11256 | ||
11257 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
11258 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
11259 | if (!offset_in_cu_p (&cu->header, offset)) |
11260 | { | |
11261 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
11262 | binding can be done only inside one CU. Such referenced DIE | |
11263 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
11264 | complaint (&symfile_complaints, | |
11265 | _("DW_AT_abstract_origin offset is not in CU for " | |
11266 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11267 | "[in module %s]"), | |
4262abfb | 11268 | child_die->offset.sect_off, objfile_name (objfile)); |
d76b7dbc JK |
11269 | continue; |
11270 | } | |
1788b2d3 JK |
11271 | parameter->u.param_offset.cu_off = (offset.sect_off |
11272 | - cu->header.offset.sect_off); | |
11273 | } | |
11274 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
11275 | { |
11276 | complaint (&symfile_complaints, | |
11277 | _("No DW_FORM_block* DW_AT_location for " | |
11278 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11279 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11280 | continue; |
11281 | } | |
24c5c679 | 11282 | else |
96408a79 | 11283 | { |
24c5c679 JK |
11284 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
11285 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
11286 | if (parameter->u.dwarf_reg != -1) | |
11287 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
11288 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
11289 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
11290 | ¶meter->u.fb_offset)) | |
11291 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
11292 | else | |
11293 | { | |
11294 | complaint (&symfile_complaints, | |
11295 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
11296 | "for DW_FORM_block* DW_AT_location is supported for " | |
11297 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11298 | "[in module %s]"), | |
4262abfb | 11299 | child_die->offset.sect_off, objfile_name (objfile)); |
24c5c679 JK |
11300 | continue; |
11301 | } | |
96408a79 SA |
11302 | } |
11303 | ||
11304 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
11305 | if (!attr_form_is_block (attr)) | |
11306 | { | |
11307 | complaint (&symfile_complaints, | |
11308 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
11309 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11310 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11311 | continue; |
11312 | } | |
11313 | parameter->value = DW_BLOCK (attr)->data; | |
11314 | parameter->value_size = DW_BLOCK (attr)->size; | |
11315 | ||
11316 | /* Parameters are not pre-cleared by memset above. */ | |
11317 | parameter->data_value = NULL; | |
11318 | parameter->data_value_size = 0; | |
11319 | call_site->parameter_count++; | |
11320 | ||
11321 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
11322 | if (attr) | |
11323 | { | |
11324 | if (!attr_form_is_block (attr)) | |
11325 | complaint (&symfile_complaints, | |
11326 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
11327 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11328 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11329 | else |
11330 | { | |
11331 | parameter->data_value = DW_BLOCK (attr)->data; | |
11332 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
11333 | } | |
11334 | } | |
11335 | } | |
11336 | } | |
11337 | ||
43039443 | 11338 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
11339 | Return 1 if the attributes are present and valid, otherwise, return 0. |
11340 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
11341 | |
11342 | static int | |
11343 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
11344 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
11345 | struct partial_symtab *ranges_pst) | |
43039443 JK |
11346 | { |
11347 | struct objfile *objfile = cu->objfile; | |
11348 | struct comp_unit_head *cu_header = &cu->header; | |
11349 | bfd *obfd = objfile->obfd; | |
11350 | unsigned int addr_size = cu_header->addr_size; | |
11351 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11352 | /* Base address selection entry. */ | |
11353 | CORE_ADDR base; | |
11354 | int found_base; | |
11355 | unsigned int dummy; | |
d521ce57 | 11356 | const gdb_byte *buffer; |
43039443 JK |
11357 | CORE_ADDR marker; |
11358 | int low_set; | |
11359 | CORE_ADDR low = 0; | |
11360 | CORE_ADDR high = 0; | |
ff013f42 | 11361 | CORE_ADDR baseaddr; |
43039443 | 11362 | |
d00adf39 DE |
11363 | found_base = cu->base_known; |
11364 | base = cu->base_address; | |
43039443 | 11365 | |
be391dca | 11366 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11367 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
11368 | { |
11369 | complaint (&symfile_complaints, | |
11370 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
11371 | offset); | |
11372 | return 0; | |
11373 | } | |
dce234bc | 11374 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
11375 | |
11376 | /* Read in the largest possible address. */ | |
11377 | marker = read_address (obfd, buffer, cu, &dummy); | |
11378 | if ((marker & mask) == mask) | |
11379 | { | |
11380 | /* If we found the largest possible address, then | |
11381 | read the base address. */ | |
11382 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11383 | buffer += 2 * addr_size; | |
11384 | offset += 2 * addr_size; | |
11385 | found_base = 1; | |
11386 | } | |
11387 | ||
11388 | low_set = 0; | |
11389 | ||
e7030f15 | 11390 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 11391 | |
43039443 JK |
11392 | while (1) |
11393 | { | |
11394 | CORE_ADDR range_beginning, range_end; | |
11395 | ||
11396 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
11397 | buffer += addr_size; | |
11398 | range_end = read_address (obfd, buffer, cu, &dummy); | |
11399 | buffer += addr_size; | |
11400 | offset += 2 * addr_size; | |
11401 | ||
11402 | /* An end of list marker is a pair of zero addresses. */ | |
11403 | if (range_beginning == 0 && range_end == 0) | |
11404 | /* Found the end of list entry. */ | |
11405 | break; | |
11406 | ||
11407 | /* Each base address selection entry is a pair of 2 values. | |
11408 | The first is the largest possible address, the second is | |
11409 | the base address. Check for a base address here. */ | |
11410 | if ((range_beginning & mask) == mask) | |
11411 | { | |
11412 | /* If we found the largest possible address, then | |
11413 | read the base address. */ | |
11414 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11415 | found_base = 1; | |
11416 | continue; | |
11417 | } | |
11418 | ||
11419 | if (!found_base) | |
11420 | { | |
11421 | /* We have no valid base address for the ranges | |
11422 | data. */ | |
11423 | complaint (&symfile_complaints, | |
11424 | _("Invalid .debug_ranges data (no base address)")); | |
11425 | return 0; | |
11426 | } | |
11427 | ||
9277c30c UW |
11428 | if (range_beginning > range_end) |
11429 | { | |
11430 | /* Inverted range entries are invalid. */ | |
11431 | complaint (&symfile_complaints, | |
11432 | _("Invalid .debug_ranges data (inverted range)")); | |
11433 | return 0; | |
11434 | } | |
11435 | ||
11436 | /* Empty range entries have no effect. */ | |
11437 | if (range_beginning == range_end) | |
11438 | continue; | |
11439 | ||
43039443 JK |
11440 | range_beginning += base; |
11441 | range_end += base; | |
11442 | ||
01093045 DE |
11443 | /* A not-uncommon case of bad debug info. |
11444 | Don't pollute the addrmap with bad data. */ | |
11445 | if (range_beginning + baseaddr == 0 | |
11446 | && !dwarf2_per_objfile->has_section_at_zero) | |
11447 | { | |
11448 | complaint (&symfile_complaints, | |
11449 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11450 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11451 | continue; |
11452 | } | |
11453 | ||
9277c30c | 11454 | if (ranges_pst != NULL) |
ff013f42 | 11455 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
11456 | range_beginning + baseaddr, |
11457 | range_end - 1 + baseaddr, | |
ff013f42 JK |
11458 | ranges_pst); |
11459 | ||
43039443 JK |
11460 | /* FIXME: This is recording everything as a low-high |
11461 | segment of consecutive addresses. We should have a | |
11462 | data structure for discontiguous block ranges | |
11463 | instead. */ | |
11464 | if (! low_set) | |
11465 | { | |
11466 | low = range_beginning; | |
11467 | high = range_end; | |
11468 | low_set = 1; | |
11469 | } | |
11470 | else | |
11471 | { | |
11472 | if (range_beginning < low) | |
11473 | low = range_beginning; | |
11474 | if (range_end > high) | |
11475 | high = range_end; | |
11476 | } | |
11477 | } | |
11478 | ||
11479 | if (! low_set) | |
11480 | /* If the first entry is an end-of-list marker, the range | |
11481 | describes an empty scope, i.e. no instructions. */ | |
11482 | return 0; | |
11483 | ||
11484 | if (low_return) | |
11485 | *low_return = low; | |
11486 | if (high_return) | |
11487 | *high_return = high; | |
11488 | return 1; | |
11489 | } | |
11490 | ||
af34e669 DJ |
11491 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
11492 | are present and valid, otherwise, return 0. Return -1 if the range is | |
11493 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 11494 | |
c906108c | 11495 | static int |
af34e669 | 11496 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
11497 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
11498 | struct partial_symtab *pst) | |
c906108c SS |
11499 | { |
11500 | struct attribute *attr; | |
91da1414 | 11501 | struct attribute *attr_high; |
af34e669 DJ |
11502 | CORE_ADDR low = 0; |
11503 | CORE_ADDR high = 0; | |
11504 | int ret = 0; | |
c906108c | 11505 | |
91da1414 MW |
11506 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
11507 | if (attr_high) | |
af34e669 | 11508 | { |
e142c38c | 11509 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 11510 | if (attr) |
91da1414 MW |
11511 | { |
11512 | low = DW_ADDR (attr); | |
3019eac3 DE |
11513 | if (attr_high->form == DW_FORM_addr |
11514 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
11515 | high = DW_ADDR (attr_high); |
11516 | else | |
11517 | high = low + DW_UNSND (attr_high); | |
11518 | } | |
af34e669 DJ |
11519 | else |
11520 | /* Found high w/o low attribute. */ | |
11521 | return 0; | |
11522 | ||
11523 | /* Found consecutive range of addresses. */ | |
11524 | ret = 1; | |
11525 | } | |
c906108c | 11526 | else |
af34e669 | 11527 | { |
e142c38c | 11528 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
11529 | if (attr != NULL) |
11530 | { | |
ab435259 DE |
11531 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
11532 | We take advantage of the fact that DW_AT_ranges does not appear | |
11533 | in DW_TAG_compile_unit of DWO files. */ | |
11534 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
11535 | unsigned int ranges_offset = (DW_UNSND (attr) | |
11536 | + (need_ranges_base | |
11537 | ? cu->ranges_base | |
11538 | : 0)); | |
2e3cf129 | 11539 | |
af34e669 | 11540 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 11541 | .debug_ranges section. */ |
2e3cf129 | 11542 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 11543 | return 0; |
43039443 | 11544 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
11545 | ret = -1; |
11546 | } | |
11547 | } | |
c906108c | 11548 | |
9373cf26 JK |
11549 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
11550 | if (high <= low) | |
c906108c SS |
11551 | return 0; |
11552 | ||
11553 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
11554 | eliminate duplicate copies of functions and vtables and such. | |
11555 | The linker will arbitrarily choose one and discard the others. | |
11556 | The AT_*_pc values for such functions refer to local labels in | |
11557 | these sections. If the section from that file was discarded, the | |
11558 | labels are not in the output, so the relocs get a value of 0. | |
11559 | If this is a discarded function, mark the pc bounds as invalid, | |
11560 | so that GDB will ignore it. */ | |
72dca2f5 | 11561 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
11562 | return 0; |
11563 | ||
11564 | *lowpc = low; | |
96408a79 SA |
11565 | if (highpc) |
11566 | *highpc = high; | |
af34e669 | 11567 | return ret; |
c906108c SS |
11568 | } |
11569 | ||
b084d499 JB |
11570 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
11571 | its low and high PC addresses. Do nothing if these addresses could not | |
11572 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
11573 | and HIGHPC to the high address if greater than HIGHPC. */ | |
11574 | ||
11575 | static void | |
11576 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
11577 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
11578 | struct dwarf2_cu *cu) | |
11579 | { | |
11580 | CORE_ADDR low, high; | |
11581 | struct die_info *child = die->child; | |
11582 | ||
d85a05f0 | 11583 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
11584 | { |
11585 | *lowpc = min (*lowpc, low); | |
11586 | *highpc = max (*highpc, high); | |
11587 | } | |
11588 | ||
11589 | /* If the language does not allow nested subprograms (either inside | |
11590 | subprograms or lexical blocks), we're done. */ | |
11591 | if (cu->language != language_ada) | |
11592 | return; | |
6e70227d | 11593 | |
b084d499 JB |
11594 | /* Check all the children of the given DIE. If it contains nested |
11595 | subprograms, then check their pc bounds. Likewise, we need to | |
11596 | check lexical blocks as well, as they may also contain subprogram | |
11597 | definitions. */ | |
11598 | while (child && child->tag) | |
11599 | { | |
11600 | if (child->tag == DW_TAG_subprogram | |
11601 | || child->tag == DW_TAG_lexical_block) | |
11602 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
11603 | child = sibling_die (child); | |
11604 | } | |
11605 | } | |
11606 | ||
fae299cd DC |
11607 | /* Get the low and high pc's represented by the scope DIE, and store |
11608 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
11609 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
11610 | ||
11611 | static void | |
11612 | get_scope_pc_bounds (struct die_info *die, | |
11613 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
11614 | struct dwarf2_cu *cu) | |
11615 | { | |
11616 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
11617 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
11618 | CORE_ADDR current_low, current_high; | |
11619 | ||
d85a05f0 | 11620 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
11621 | { |
11622 | best_low = current_low; | |
11623 | best_high = current_high; | |
11624 | } | |
11625 | else | |
11626 | { | |
11627 | struct die_info *child = die->child; | |
11628 | ||
11629 | while (child && child->tag) | |
11630 | { | |
11631 | switch (child->tag) { | |
11632 | case DW_TAG_subprogram: | |
b084d499 | 11633 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
11634 | break; |
11635 | case DW_TAG_namespace: | |
f55ee35c | 11636 | case DW_TAG_module: |
fae299cd DC |
11637 | /* FIXME: carlton/2004-01-16: Should we do this for |
11638 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
11639 | that current GCC's always emit the DIEs corresponding | |
11640 | to definitions of methods of classes as children of a | |
11641 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
11642 | the DIEs giving the declarations, which could be | |
11643 | anywhere). But I don't see any reason why the | |
11644 | standards says that they have to be there. */ | |
11645 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
11646 | ||
11647 | if (current_low != ((CORE_ADDR) -1)) | |
11648 | { | |
11649 | best_low = min (best_low, current_low); | |
11650 | best_high = max (best_high, current_high); | |
11651 | } | |
11652 | break; | |
11653 | default: | |
0963b4bd | 11654 | /* Ignore. */ |
fae299cd DC |
11655 | break; |
11656 | } | |
11657 | ||
11658 | child = sibling_die (child); | |
11659 | } | |
11660 | } | |
11661 | ||
11662 | *lowpc = best_low; | |
11663 | *highpc = best_high; | |
11664 | } | |
11665 | ||
801e3a5b JB |
11666 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
11667 | in DIE. */ | |
380bca97 | 11668 | |
801e3a5b JB |
11669 | static void |
11670 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
11671 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
11672 | { | |
bb5ed363 | 11673 | struct objfile *objfile = cu->objfile; |
801e3a5b | 11674 | struct attribute *attr; |
91da1414 | 11675 | struct attribute *attr_high; |
801e3a5b | 11676 | |
91da1414 MW |
11677 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
11678 | if (attr_high) | |
801e3a5b | 11679 | { |
801e3a5b JB |
11680 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
11681 | if (attr) | |
11682 | { | |
11683 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 11684 | CORE_ADDR high; |
3019eac3 DE |
11685 | if (attr_high->form == DW_FORM_addr |
11686 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
11687 | high = DW_ADDR (attr_high); |
11688 | else | |
11689 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 11690 | |
801e3a5b JB |
11691 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
11692 | } | |
11693 | } | |
11694 | ||
11695 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
11696 | if (attr) | |
11697 | { | |
bb5ed363 | 11698 | bfd *obfd = objfile->obfd; |
ab435259 DE |
11699 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
11700 | We take advantage of the fact that DW_AT_ranges does not appear | |
11701 | in DW_TAG_compile_unit of DWO files. */ | |
11702 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
11703 | |
11704 | /* The value of the DW_AT_ranges attribute is the offset of the | |
11705 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
11706 | unsigned long offset = (DW_UNSND (attr) |
11707 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 11708 | const gdb_byte *buffer; |
801e3a5b JB |
11709 | |
11710 | /* For some target architectures, but not others, the | |
11711 | read_address function sign-extends the addresses it returns. | |
11712 | To recognize base address selection entries, we need a | |
11713 | mask. */ | |
11714 | unsigned int addr_size = cu->header.addr_size; | |
11715 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11716 | ||
11717 | /* The base address, to which the next pair is relative. Note | |
11718 | that this 'base' is a DWARF concept: most entries in a range | |
11719 | list are relative, to reduce the number of relocs against the | |
11720 | debugging information. This is separate from this function's | |
11721 | 'baseaddr' argument, which GDB uses to relocate debugging | |
11722 | information from a shared library based on the address at | |
11723 | which the library was loaded. */ | |
d00adf39 DE |
11724 | CORE_ADDR base = cu->base_address; |
11725 | int base_known = cu->base_known; | |
801e3a5b | 11726 | |
d62bfeaf | 11727 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11728 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
11729 | { |
11730 | complaint (&symfile_complaints, | |
11731 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
11732 | offset); | |
11733 | return; | |
11734 | } | |
d62bfeaf | 11735 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
11736 | |
11737 | for (;;) | |
11738 | { | |
11739 | unsigned int bytes_read; | |
11740 | CORE_ADDR start, end; | |
11741 | ||
11742 | start = read_address (obfd, buffer, cu, &bytes_read); | |
11743 | buffer += bytes_read; | |
11744 | end = read_address (obfd, buffer, cu, &bytes_read); | |
11745 | buffer += bytes_read; | |
11746 | ||
11747 | /* Did we find the end of the range list? */ | |
11748 | if (start == 0 && end == 0) | |
11749 | break; | |
11750 | ||
11751 | /* Did we find a base address selection entry? */ | |
11752 | else if ((start & base_select_mask) == base_select_mask) | |
11753 | { | |
11754 | base = end; | |
11755 | base_known = 1; | |
11756 | } | |
11757 | ||
11758 | /* We found an ordinary address range. */ | |
11759 | else | |
11760 | { | |
11761 | if (!base_known) | |
11762 | { | |
11763 | complaint (&symfile_complaints, | |
3e43a32a MS |
11764 | _("Invalid .debug_ranges data " |
11765 | "(no base address)")); | |
801e3a5b JB |
11766 | return; |
11767 | } | |
11768 | ||
9277c30c UW |
11769 | if (start > end) |
11770 | { | |
11771 | /* Inverted range entries are invalid. */ | |
11772 | complaint (&symfile_complaints, | |
11773 | _("Invalid .debug_ranges data " | |
11774 | "(inverted range)")); | |
11775 | return; | |
11776 | } | |
11777 | ||
11778 | /* Empty range entries have no effect. */ | |
11779 | if (start == end) | |
11780 | continue; | |
11781 | ||
01093045 DE |
11782 | start += base + baseaddr; |
11783 | end += base + baseaddr; | |
11784 | ||
11785 | /* A not-uncommon case of bad debug info. | |
11786 | Don't pollute the addrmap with bad data. */ | |
11787 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
11788 | { | |
11789 | complaint (&symfile_complaints, | |
11790 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11791 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11792 | continue; |
11793 | } | |
11794 | ||
11795 | record_block_range (block, start, end - 1); | |
801e3a5b JB |
11796 | } |
11797 | } | |
11798 | } | |
11799 | } | |
11800 | ||
685b1105 JK |
11801 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
11802 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 11803 | |
685b1105 JK |
11804 | static void |
11805 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
11806 | { |
11807 | const char *cs; | |
11808 | int major, minor, release; | |
11809 | ||
11810 | if (cu->producer == NULL) | |
11811 | { | |
11812 | /* For unknown compilers expect their behavior is DWARF version | |
11813 | compliant. | |
11814 | ||
11815 | GCC started to support .debug_types sections by -gdwarf-4 since | |
11816 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
11817 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
11818 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
11819 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 11820 | } |
685b1105 | 11821 | else if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) == 0) |
60d5a603 | 11822 | { |
685b1105 JK |
11823 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
11824 | ||
ba919b58 TT |
11825 | cs = &cu->producer[strlen ("GNU ")]; |
11826 | while (*cs && !isdigit (*cs)) | |
11827 | cs++; | |
11828 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
11829 | { | |
11830 | /* Not recognized as GCC. */ | |
11831 | } | |
11832 | else | |
1b80a9fa JK |
11833 | { |
11834 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); | |
11835 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
11836 | } | |
685b1105 JK |
11837 | } |
11838 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
11839 | cu->producer_is_icc = 1; | |
11840 | else | |
11841 | { | |
11842 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
11843 | compliant. */ | |
60d5a603 JK |
11844 | } |
11845 | ||
ba919b58 | 11846 | cu->checked_producer = 1; |
685b1105 | 11847 | } |
ba919b58 | 11848 | |
685b1105 JK |
11849 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
11850 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
11851 | during 4.6.0 experimental. */ | |
11852 | ||
11853 | static int | |
11854 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
11855 | { | |
11856 | if (!cu->checked_producer) | |
11857 | check_producer (cu); | |
11858 | ||
11859 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
11860 | } |
11861 | ||
11862 | /* Return the default accessibility type if it is not overriden by | |
11863 | DW_AT_accessibility. */ | |
11864 | ||
11865 | static enum dwarf_access_attribute | |
11866 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
11867 | { | |
11868 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
11869 | { | |
11870 | /* The default DWARF 2 accessibility for members is public, the default | |
11871 | accessibility for inheritance is private. */ | |
11872 | ||
11873 | if (die->tag != DW_TAG_inheritance) | |
11874 | return DW_ACCESS_public; | |
11875 | else | |
11876 | return DW_ACCESS_private; | |
11877 | } | |
11878 | else | |
11879 | { | |
11880 | /* DWARF 3+ defines the default accessibility a different way. The same | |
11881 | rules apply now for DW_TAG_inheritance as for the members and it only | |
11882 | depends on the container kind. */ | |
11883 | ||
11884 | if (die->parent->tag == DW_TAG_class_type) | |
11885 | return DW_ACCESS_private; | |
11886 | else | |
11887 | return DW_ACCESS_public; | |
11888 | } | |
11889 | } | |
11890 | ||
74ac6d43 TT |
11891 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
11892 | offset. If the attribute was not found return 0, otherwise return | |
11893 | 1. If it was found but could not properly be handled, set *OFFSET | |
11894 | to 0. */ | |
11895 | ||
11896 | static int | |
11897 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
11898 | LONGEST *offset) | |
11899 | { | |
11900 | struct attribute *attr; | |
11901 | ||
11902 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
11903 | if (attr != NULL) | |
11904 | { | |
11905 | *offset = 0; | |
11906 | ||
11907 | /* Note that we do not check for a section offset first here. | |
11908 | This is because DW_AT_data_member_location is new in DWARF 4, | |
11909 | so if we see it, we can assume that a constant form is really | |
11910 | a constant and not a section offset. */ | |
11911 | if (attr_form_is_constant (attr)) | |
11912 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
11913 | else if (attr_form_is_section_offset (attr)) | |
11914 | dwarf2_complex_location_expr_complaint (); | |
11915 | else if (attr_form_is_block (attr)) | |
11916 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
11917 | else | |
11918 | dwarf2_complex_location_expr_complaint (); | |
11919 | ||
11920 | return 1; | |
11921 | } | |
11922 | ||
11923 | return 0; | |
11924 | } | |
11925 | ||
c906108c SS |
11926 | /* Add an aggregate field to the field list. */ |
11927 | ||
11928 | static void | |
107d2387 | 11929 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 11930 | struct dwarf2_cu *cu) |
6e70227d | 11931 | { |
e7c27a73 | 11932 | struct objfile *objfile = cu->objfile; |
5e2b427d | 11933 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
11934 | struct nextfield *new_field; |
11935 | struct attribute *attr; | |
11936 | struct field *fp; | |
15d034d0 | 11937 | const char *fieldname = ""; |
c906108c SS |
11938 | |
11939 | /* Allocate a new field list entry and link it in. */ | |
11940 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 11941 | make_cleanup (xfree, new_field); |
c906108c | 11942 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
11943 | |
11944 | if (die->tag == DW_TAG_inheritance) | |
11945 | { | |
11946 | new_field->next = fip->baseclasses; | |
11947 | fip->baseclasses = new_field; | |
11948 | } | |
11949 | else | |
11950 | { | |
11951 | new_field->next = fip->fields; | |
11952 | fip->fields = new_field; | |
11953 | } | |
c906108c SS |
11954 | fip->nfields++; |
11955 | ||
e142c38c | 11956 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
11957 | if (attr) |
11958 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
11959 | else |
11960 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
11961 | if (new_field->accessibility != DW_ACCESS_public) |
11962 | fip->non_public_fields = 1; | |
60d5a603 | 11963 | |
e142c38c | 11964 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
11965 | if (attr) |
11966 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
11967 | else |
11968 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
11969 | |
11970 | fp = &new_field->field; | |
a9a9bd0f | 11971 | |
e142c38c | 11972 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 11973 | { |
74ac6d43 TT |
11974 | LONGEST offset; |
11975 | ||
a9a9bd0f | 11976 | /* Data member other than a C++ static data member. */ |
6e70227d | 11977 | |
c906108c | 11978 | /* Get type of field. */ |
e7c27a73 | 11979 | fp->type = die_type (die, cu); |
c906108c | 11980 | |
d6a843b5 | 11981 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 11982 | |
c906108c | 11983 | /* Get bit size of field (zero if none). */ |
e142c38c | 11984 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
11985 | if (attr) |
11986 | { | |
11987 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
11988 | } | |
11989 | else | |
11990 | { | |
11991 | FIELD_BITSIZE (*fp) = 0; | |
11992 | } | |
11993 | ||
11994 | /* Get bit offset of field. */ | |
74ac6d43 TT |
11995 | if (handle_data_member_location (die, cu, &offset)) |
11996 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 11997 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
11998 | if (attr) |
11999 | { | |
5e2b427d | 12000 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
12001 | { |
12002 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
12003 | additional bit offset from the MSB of the containing |
12004 | anonymous object to the MSB of the field. We don't | |
12005 | have to do anything special since we don't need to | |
12006 | know the size of the anonymous object. */ | |
f41f5e61 | 12007 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
12008 | } |
12009 | else | |
12010 | { | |
12011 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
12012 | MSB of the anonymous object, subtract off the number of |
12013 | bits from the MSB of the field to the MSB of the | |
12014 | object, and then subtract off the number of bits of | |
12015 | the field itself. The result is the bit offset of | |
12016 | the LSB of the field. */ | |
c906108c SS |
12017 | int anonymous_size; |
12018 | int bit_offset = DW_UNSND (attr); | |
12019 | ||
e142c38c | 12020 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12021 | if (attr) |
12022 | { | |
12023 | /* The size of the anonymous object containing | |
12024 | the bit field is explicit, so use the | |
12025 | indicated size (in bytes). */ | |
12026 | anonymous_size = DW_UNSND (attr); | |
12027 | } | |
12028 | else | |
12029 | { | |
12030 | /* The size of the anonymous object containing | |
12031 | the bit field must be inferred from the type | |
12032 | attribute of the data member containing the | |
12033 | bit field. */ | |
12034 | anonymous_size = TYPE_LENGTH (fp->type); | |
12035 | } | |
f41f5e61 PA |
12036 | SET_FIELD_BITPOS (*fp, |
12037 | (FIELD_BITPOS (*fp) | |
12038 | + anonymous_size * bits_per_byte | |
12039 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
12040 | } |
12041 | } | |
12042 | ||
12043 | /* Get name of field. */ | |
39cbfefa DJ |
12044 | fieldname = dwarf2_name (die, cu); |
12045 | if (fieldname == NULL) | |
12046 | fieldname = ""; | |
d8151005 DJ |
12047 | |
12048 | /* The name is already allocated along with this objfile, so we don't | |
12049 | need to duplicate it for the type. */ | |
12050 | fp->name = fieldname; | |
c906108c SS |
12051 | |
12052 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 12053 | pointer or virtual base class pointer) to private. */ |
e142c38c | 12054 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 12055 | { |
d48cc9dd | 12056 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
12057 | new_field->accessibility = DW_ACCESS_private; |
12058 | fip->non_public_fields = 1; | |
12059 | } | |
12060 | } | |
a9a9bd0f | 12061 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 12062 | { |
a9a9bd0f DC |
12063 | /* C++ static member. */ |
12064 | ||
12065 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
12066 | is a declaration, but all versions of G++ as of this writing | |
12067 | (so through at least 3.2.1) incorrectly generate | |
12068 | DW_TAG_variable tags. */ | |
6e70227d | 12069 | |
ff355380 | 12070 | const char *physname; |
c906108c | 12071 | |
a9a9bd0f | 12072 | /* Get name of field. */ |
39cbfefa DJ |
12073 | fieldname = dwarf2_name (die, cu); |
12074 | if (fieldname == NULL) | |
c906108c SS |
12075 | return; |
12076 | ||
254e6b9e | 12077 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
12078 | if (attr |
12079 | /* Only create a symbol if this is an external value. | |
12080 | new_symbol checks this and puts the value in the global symbol | |
12081 | table, which we want. If it is not external, new_symbol | |
12082 | will try to put the value in cu->list_in_scope which is wrong. */ | |
12083 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
12084 | { |
12085 | /* A static const member, not much different than an enum as far as | |
12086 | we're concerned, except that we can support more types. */ | |
12087 | new_symbol (die, NULL, cu); | |
12088 | } | |
12089 | ||
2df3850c | 12090 | /* Get physical name. */ |
ff355380 | 12091 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 12092 | |
d8151005 DJ |
12093 | /* The name is already allocated along with this objfile, so we don't |
12094 | need to duplicate it for the type. */ | |
12095 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 12096 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 12097 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
12098 | } |
12099 | else if (die->tag == DW_TAG_inheritance) | |
12100 | { | |
74ac6d43 | 12101 | LONGEST offset; |
d4b96c9a | 12102 | |
74ac6d43 TT |
12103 | /* C++ base class field. */ |
12104 | if (handle_data_member_location (die, cu, &offset)) | |
12105 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 12106 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 12107 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
12108 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
12109 | fip->nbaseclasses++; | |
12110 | } | |
12111 | } | |
12112 | ||
98751a41 JK |
12113 | /* Add a typedef defined in the scope of the FIP's class. */ |
12114 | ||
12115 | static void | |
12116 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
12117 | struct dwarf2_cu *cu) | |
6e70227d | 12118 | { |
98751a41 | 12119 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
12120 | struct typedef_field_list *new_field; |
12121 | struct attribute *attr; | |
12122 | struct typedef_field *fp; | |
12123 | char *fieldname = ""; | |
12124 | ||
12125 | /* Allocate a new field list entry and link it in. */ | |
12126 | new_field = xzalloc (sizeof (*new_field)); | |
12127 | make_cleanup (xfree, new_field); | |
12128 | ||
12129 | gdb_assert (die->tag == DW_TAG_typedef); | |
12130 | ||
12131 | fp = &new_field->field; | |
12132 | ||
12133 | /* Get name of field. */ | |
12134 | fp->name = dwarf2_name (die, cu); | |
12135 | if (fp->name == NULL) | |
12136 | return; | |
12137 | ||
12138 | fp->type = read_type_die (die, cu); | |
12139 | ||
12140 | new_field->next = fip->typedef_field_list; | |
12141 | fip->typedef_field_list = new_field; | |
12142 | fip->typedef_field_list_count++; | |
12143 | } | |
12144 | ||
c906108c SS |
12145 | /* Create the vector of fields, and attach it to the type. */ |
12146 | ||
12147 | static void | |
fba45db2 | 12148 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12149 | struct dwarf2_cu *cu) |
c906108c SS |
12150 | { |
12151 | int nfields = fip->nfields; | |
12152 | ||
12153 | /* Record the field count, allocate space for the array of fields, | |
12154 | and create blank accessibility bitfields if necessary. */ | |
12155 | TYPE_NFIELDS (type) = nfields; | |
12156 | TYPE_FIELDS (type) = (struct field *) | |
12157 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
12158 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
12159 | ||
b4ba55a1 | 12160 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
12161 | { |
12162 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12163 | ||
12164 | TYPE_FIELD_PRIVATE_BITS (type) = | |
12165 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12166 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
12167 | ||
12168 | TYPE_FIELD_PROTECTED_BITS (type) = | |
12169 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12170 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
12171 | ||
774b6a14 TT |
12172 | TYPE_FIELD_IGNORE_BITS (type) = |
12173 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12174 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
12175 | } |
12176 | ||
12177 | /* If the type has baseclasses, allocate and clear a bit vector for | |
12178 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 12179 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
12180 | { |
12181 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 12182 | unsigned char *pointer; |
c906108c SS |
12183 | |
12184 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
12185 | pointer = TYPE_ALLOC (type, num_bytes); |
12186 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
12187 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
12188 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
12189 | } | |
12190 | ||
3e43a32a MS |
12191 | /* Copy the saved-up fields into the field vector. Start from the head of |
12192 | the list, adding to the tail of the field array, so that they end up in | |
12193 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
12194 | while (nfields-- > 0) |
12195 | { | |
7d0ccb61 DJ |
12196 | struct nextfield *fieldp; |
12197 | ||
12198 | if (fip->fields) | |
12199 | { | |
12200 | fieldp = fip->fields; | |
12201 | fip->fields = fieldp->next; | |
12202 | } | |
12203 | else | |
12204 | { | |
12205 | fieldp = fip->baseclasses; | |
12206 | fip->baseclasses = fieldp->next; | |
12207 | } | |
12208 | ||
12209 | TYPE_FIELD (type, nfields) = fieldp->field; | |
12210 | switch (fieldp->accessibility) | |
c906108c | 12211 | { |
c5aa993b | 12212 | case DW_ACCESS_private: |
b4ba55a1 JB |
12213 | if (cu->language != language_ada) |
12214 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 12215 | break; |
c906108c | 12216 | |
c5aa993b | 12217 | case DW_ACCESS_protected: |
b4ba55a1 JB |
12218 | if (cu->language != language_ada) |
12219 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 12220 | break; |
c906108c | 12221 | |
c5aa993b JM |
12222 | case DW_ACCESS_public: |
12223 | break; | |
c906108c | 12224 | |
c5aa993b JM |
12225 | default: |
12226 | /* Unknown accessibility. Complain and treat it as public. */ | |
12227 | { | |
e2e0b3e5 | 12228 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 12229 | fieldp->accessibility); |
c5aa993b JM |
12230 | } |
12231 | break; | |
c906108c SS |
12232 | } |
12233 | if (nfields < fip->nbaseclasses) | |
12234 | { | |
7d0ccb61 | 12235 | switch (fieldp->virtuality) |
c906108c | 12236 | { |
c5aa993b JM |
12237 | case DW_VIRTUALITY_virtual: |
12238 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 12239 | if (cu->language == language_ada) |
a73c6dcd | 12240 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
12241 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
12242 | break; | |
c906108c SS |
12243 | } |
12244 | } | |
c906108c SS |
12245 | } |
12246 | } | |
12247 | ||
7d27a96d TT |
12248 | /* Return true if this member function is a constructor, false |
12249 | otherwise. */ | |
12250 | ||
12251 | static int | |
12252 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
12253 | { | |
12254 | const char *fieldname; | |
12255 | const char *typename; | |
12256 | int len; | |
12257 | ||
12258 | if (die->parent == NULL) | |
12259 | return 0; | |
12260 | ||
12261 | if (die->parent->tag != DW_TAG_structure_type | |
12262 | && die->parent->tag != DW_TAG_union_type | |
12263 | && die->parent->tag != DW_TAG_class_type) | |
12264 | return 0; | |
12265 | ||
12266 | fieldname = dwarf2_name (die, cu); | |
12267 | typename = dwarf2_name (die->parent, cu); | |
12268 | if (fieldname == NULL || typename == NULL) | |
12269 | return 0; | |
12270 | ||
12271 | len = strlen (fieldname); | |
12272 | return (strncmp (fieldname, typename, len) == 0 | |
12273 | && (typename[len] == '\0' || typename[len] == '<')); | |
12274 | } | |
12275 | ||
c906108c SS |
12276 | /* Add a member function to the proper fieldlist. */ |
12277 | ||
12278 | static void | |
107d2387 | 12279 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12280 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 12281 | { |
e7c27a73 | 12282 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12283 | struct attribute *attr; |
12284 | struct fnfieldlist *flp; | |
12285 | int i; | |
12286 | struct fn_field *fnp; | |
15d034d0 | 12287 | const char *fieldname; |
c906108c | 12288 | struct nextfnfield *new_fnfield; |
f792889a | 12289 | struct type *this_type; |
60d5a603 | 12290 | enum dwarf_access_attribute accessibility; |
c906108c | 12291 | |
b4ba55a1 | 12292 | if (cu->language == language_ada) |
a73c6dcd | 12293 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 12294 | |
2df3850c | 12295 | /* Get name of member function. */ |
39cbfefa DJ |
12296 | fieldname = dwarf2_name (die, cu); |
12297 | if (fieldname == NULL) | |
2df3850c | 12298 | return; |
c906108c | 12299 | |
c906108c SS |
12300 | /* Look up member function name in fieldlist. */ |
12301 | for (i = 0; i < fip->nfnfields; i++) | |
12302 | { | |
27bfe10e | 12303 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
12304 | break; |
12305 | } | |
12306 | ||
12307 | /* Create new list element if necessary. */ | |
12308 | if (i < fip->nfnfields) | |
12309 | flp = &fip->fnfieldlists[i]; | |
12310 | else | |
12311 | { | |
12312 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
12313 | { | |
12314 | fip->fnfieldlists = (struct fnfieldlist *) | |
12315 | xrealloc (fip->fnfieldlists, | |
12316 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 12317 | * sizeof (struct fnfieldlist)); |
c906108c | 12318 | if (fip->nfnfields == 0) |
c13c43fd | 12319 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
12320 | } |
12321 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
12322 | flp->name = fieldname; | |
12323 | flp->length = 0; | |
12324 | flp->head = NULL; | |
3da10d80 | 12325 | i = fip->nfnfields++; |
c906108c SS |
12326 | } |
12327 | ||
12328 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 12329 | entry. */ |
c906108c | 12330 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 12331 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
12332 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
12333 | new_fnfield->next = flp->head; | |
12334 | flp->head = new_fnfield; | |
12335 | flp->length++; | |
12336 | ||
12337 | /* Fill in the member function field info. */ | |
12338 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
12339 | |
12340 | /* Delay processing of the physname until later. */ | |
12341 | if (cu->language == language_cplus || cu->language == language_java) | |
12342 | { | |
12343 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
12344 | die, cu); | |
12345 | } | |
12346 | else | |
12347 | { | |
1d06ead6 | 12348 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
12349 | fnp->physname = physname ? physname : ""; |
12350 | } | |
12351 | ||
c906108c | 12352 | fnp->type = alloc_type (objfile); |
f792889a DJ |
12353 | this_type = read_type_die (die, cu); |
12354 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 12355 | { |
f792889a | 12356 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 12357 | |
f792889a | 12358 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
12359 | of the method itself (TYPE_CODE_METHOD). */ |
12360 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
12361 | TYPE_TARGET_TYPE (this_type), |
12362 | TYPE_FIELDS (this_type), | |
12363 | TYPE_NFIELDS (this_type), | |
12364 | TYPE_VARARGS (this_type)); | |
c906108c SS |
12365 | |
12366 | /* Handle static member functions. | |
c5aa993b | 12367 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
12368 | member functions. G++ helps GDB by marking the first |
12369 | parameter for non-static member functions (which is the this | |
12370 | pointer) as artificial. We obtain this information from | |
12371 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 12372 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
12373 | fnp->voffset = VOFFSET_STATIC; |
12374 | } | |
12375 | else | |
e2e0b3e5 | 12376 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 12377 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
12378 | |
12379 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 12380 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 12381 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 12382 | |
3e43a32a MS |
12383 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
12384 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
12385 | |
12386 | /* Get accessibility. */ | |
e142c38c | 12387 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 12388 | if (attr) |
60d5a603 JK |
12389 | accessibility = DW_UNSND (attr); |
12390 | else | |
12391 | accessibility = dwarf2_default_access_attribute (die, cu); | |
12392 | switch (accessibility) | |
c906108c | 12393 | { |
60d5a603 JK |
12394 | case DW_ACCESS_private: |
12395 | fnp->is_private = 1; | |
12396 | break; | |
12397 | case DW_ACCESS_protected: | |
12398 | fnp->is_protected = 1; | |
12399 | break; | |
c906108c SS |
12400 | } |
12401 | ||
b02dede2 | 12402 | /* Check for artificial methods. */ |
e142c38c | 12403 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
12404 | if (attr && DW_UNSND (attr) != 0) |
12405 | fnp->is_artificial = 1; | |
12406 | ||
7d27a96d TT |
12407 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
12408 | ||
0d564a31 | 12409 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
12410 | function. For older versions of GCC, this is an offset in the |
12411 | appropriate virtual table, as specified by DW_AT_containing_type. | |
12412 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
12413 | to the object address. */ |
12414 | ||
e142c38c | 12415 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 12416 | if (attr) |
8e19ed76 | 12417 | { |
aec5aa8b | 12418 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 12419 | { |
aec5aa8b TT |
12420 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
12421 | { | |
12422 | /* Old-style GCC. */ | |
12423 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
12424 | } | |
12425 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12426 | || (DW_BLOCK (attr)->size > 1 | |
12427 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
12428 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
12429 | { | |
12430 | struct dwarf_block blk; | |
12431 | int offset; | |
12432 | ||
12433 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12434 | ? 1 : 2); | |
12435 | blk.size = DW_BLOCK (attr)->size - offset; | |
12436 | blk.data = DW_BLOCK (attr)->data + offset; | |
12437 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
12438 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
12439 | dwarf2_complex_location_expr_complaint (); | |
12440 | else | |
12441 | fnp->voffset /= cu->header.addr_size; | |
12442 | fnp->voffset += 2; | |
12443 | } | |
12444 | else | |
12445 | dwarf2_complex_location_expr_complaint (); | |
12446 | ||
12447 | if (!fnp->fcontext) | |
12448 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
12449 | } | |
3690dd37 | 12450 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 12451 | { |
4d3c2250 | 12452 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
12453 | } |
12454 | else | |
12455 | { | |
4d3c2250 KB |
12456 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
12457 | fieldname); | |
8e19ed76 | 12458 | } |
0d564a31 | 12459 | } |
d48cc9dd DJ |
12460 | else |
12461 | { | |
12462 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
12463 | if (attr && DW_UNSND (attr)) | |
12464 | { | |
12465 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
12466 | complaint (&symfile_complaints, | |
3e43a32a MS |
12467 | _("Member function \"%s\" (offset %d) is virtual " |
12468 | "but the vtable offset is not specified"), | |
b64f50a1 | 12469 | fieldname, die->offset.sect_off); |
9655fd1a | 12470 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
12471 | TYPE_CPLUS_DYNAMIC (type) = 1; |
12472 | } | |
12473 | } | |
c906108c SS |
12474 | } |
12475 | ||
12476 | /* Create the vector of member function fields, and attach it to the type. */ | |
12477 | ||
12478 | static void | |
fba45db2 | 12479 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12480 | struct dwarf2_cu *cu) |
c906108c SS |
12481 | { |
12482 | struct fnfieldlist *flp; | |
c906108c SS |
12483 | int i; |
12484 | ||
b4ba55a1 | 12485 | if (cu->language == language_ada) |
a73c6dcd | 12486 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 12487 | |
c906108c SS |
12488 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
12489 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
12490 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
12491 | ||
12492 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
12493 | { | |
12494 | struct nextfnfield *nfp = flp->head; | |
12495 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
12496 | int k; | |
12497 | ||
12498 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
12499 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
12500 | fn_flp->fn_fields = (struct fn_field *) | |
12501 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
12502 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 12503 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
12504 | } |
12505 | ||
12506 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
12507 | } |
12508 | ||
1168df01 JB |
12509 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
12510 | language, zero otherwise. */ | |
12511 | static int | |
12512 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
12513 | { | |
12514 | static const char vptr[] = "_vptr"; | |
987504bb | 12515 | static const char vtable[] = "vtable"; |
1168df01 | 12516 | |
987504bb JJ |
12517 | /* Look for the C++ and Java forms of the vtable. */ |
12518 | if ((cu->language == language_java | |
12519 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
12520 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
12521 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
12522 | return 1; |
12523 | ||
12524 | return 0; | |
12525 | } | |
12526 | ||
c0dd20ea | 12527 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
12528 | functions, with the ABI-specified layout. If TYPE describes |
12529 | such a structure, smash it into a member function type. | |
61049d3b DJ |
12530 | |
12531 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
12532 | This is GCC PR debug/28767. */ | |
c0dd20ea | 12533 | |
0b92b5bb TT |
12534 | static void |
12535 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 12536 | { |
0b92b5bb | 12537 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
12538 | |
12539 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
12540 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
12541 | return; | |
c0dd20ea DJ |
12542 | |
12543 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
12544 | if (TYPE_FIELD_NAME (type, 0) == NULL |
12545 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
12546 | || TYPE_FIELD_NAME (type, 1) == NULL | |
12547 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
12548 | return; | |
c0dd20ea DJ |
12549 | |
12550 | /* Find the type of the method. */ | |
0b92b5bb | 12551 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
12552 | if (pfn_type == NULL |
12553 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
12554 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 12555 | return; |
c0dd20ea DJ |
12556 | |
12557 | /* Look for the "this" argument. */ | |
12558 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
12559 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 12560 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 12561 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 12562 | return; |
c0dd20ea DJ |
12563 | |
12564 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
12565 | new_type = alloc_type (objfile); |
12566 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
12567 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
12568 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 12569 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 12570 | } |
1168df01 | 12571 | |
685b1105 JK |
12572 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
12573 | (icc). */ | |
12574 | ||
12575 | static int | |
12576 | producer_is_icc (struct dwarf2_cu *cu) | |
12577 | { | |
12578 | if (!cu->checked_producer) | |
12579 | check_producer (cu); | |
12580 | ||
12581 | return cu->producer_is_icc; | |
12582 | } | |
12583 | ||
c906108c | 12584 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
12585 | (definition) to create a type for the structure or union. Fill in |
12586 | the type's name and general properties; the members will not be | |
3d1d5ea3 | 12587 | processed until process_structure_scope. |
c906108c | 12588 | |
c767944b DJ |
12589 | NOTE: we need to call these functions regardless of whether or not the |
12590 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
12591 | structure or union. This gets the type entered into our set of |
12592 | user defined types. | |
12593 | ||
12594 | However, if the structure is incomplete (an opaque struct/union) | |
12595 | then suppress creating a symbol table entry for it since gdb only | |
12596 | wants to find the one with the complete definition. Note that if | |
12597 | it is complete, we just call new_symbol, which does it's own | |
12598 | checking about whether the struct/union is anonymous or not (and | |
12599 | suppresses creating a symbol table entry itself). */ | |
12600 | ||
f792889a | 12601 | static struct type * |
134d01f1 | 12602 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12603 | { |
e7c27a73 | 12604 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12605 | struct type *type; |
12606 | struct attribute *attr; | |
15d034d0 | 12607 | const char *name; |
c906108c | 12608 | |
348e048f DE |
12609 | /* If the definition of this type lives in .debug_types, read that type. |
12610 | Don't follow DW_AT_specification though, that will take us back up | |
12611 | the chain and we want to go down. */ | |
45e58e77 | 12612 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
12613 | if (attr) |
12614 | { | |
ac9ec31b | 12615 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 12616 | |
ac9ec31b | 12617 | /* The type's CU may not be the same as CU. |
02142a6c | 12618 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
12619 | return set_die_type (die, type, cu); |
12620 | } | |
12621 | ||
c0dd20ea | 12622 | type = alloc_type (objfile); |
c906108c | 12623 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 12624 | |
39cbfefa DJ |
12625 | name = dwarf2_name (die, cu); |
12626 | if (name != NULL) | |
c906108c | 12627 | { |
987504bb JJ |
12628 | if (cu->language == language_cplus |
12629 | || cu->language == language_java) | |
63d06c5c | 12630 | { |
15d034d0 | 12631 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
12632 | |
12633 | /* dwarf2_full_name might have already finished building the DIE's | |
12634 | type. If so, there is no need to continue. */ | |
12635 | if (get_die_type (die, cu) != NULL) | |
12636 | return get_die_type (die, cu); | |
12637 | ||
12638 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
12639 | if (die->tag == DW_TAG_structure_type |
12640 | || die->tag == DW_TAG_class_type) | |
12641 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
12642 | } |
12643 | else | |
12644 | { | |
d8151005 DJ |
12645 | /* The name is already allocated along with this objfile, so |
12646 | we don't need to duplicate it for the type. */ | |
7d455152 | 12647 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
12648 | if (die->tag == DW_TAG_class_type) |
12649 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 12650 | } |
c906108c SS |
12651 | } |
12652 | ||
12653 | if (die->tag == DW_TAG_structure_type) | |
12654 | { | |
12655 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
12656 | } | |
12657 | else if (die->tag == DW_TAG_union_type) | |
12658 | { | |
12659 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
12660 | } | |
12661 | else | |
12662 | { | |
c906108c SS |
12663 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
12664 | } | |
12665 | ||
0cc2414c TT |
12666 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
12667 | TYPE_DECLARED_CLASS (type) = 1; | |
12668 | ||
e142c38c | 12669 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12670 | if (attr) |
12671 | { | |
12672 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
12673 | } | |
12674 | else | |
12675 | { | |
12676 | TYPE_LENGTH (type) = 0; | |
12677 | } | |
12678 | ||
685b1105 JK |
12679 | if (producer_is_icc (cu)) |
12680 | { | |
12681 | /* ICC does not output the required DW_AT_declaration | |
12682 | on incomplete types, but gives them a size of zero. */ | |
12683 | } | |
12684 | else | |
12685 | TYPE_STUB_SUPPORTED (type) = 1; | |
12686 | ||
dc718098 | 12687 | if (die_is_declaration (die, cu)) |
876cecd0 | 12688 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
12689 | else if (attr == NULL && die->child == NULL |
12690 | && producer_is_realview (cu->producer)) | |
12691 | /* RealView does not output the required DW_AT_declaration | |
12692 | on incomplete types. */ | |
12693 | TYPE_STUB (type) = 1; | |
dc718098 | 12694 | |
c906108c SS |
12695 | /* We need to add the type field to the die immediately so we don't |
12696 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 12697 | type within the structure itself. */ |
1c379e20 | 12698 | set_die_type (die, type, cu); |
c906108c | 12699 | |
7e314c57 JK |
12700 | /* set_die_type should be already done. */ |
12701 | set_descriptive_type (type, die, cu); | |
12702 | ||
c767944b DJ |
12703 | return type; |
12704 | } | |
12705 | ||
12706 | /* Finish creating a structure or union type, including filling in | |
12707 | its members and creating a symbol for it. */ | |
12708 | ||
12709 | static void | |
12710 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
12711 | { | |
12712 | struct objfile *objfile = cu->objfile; | |
12713 | struct die_info *child_die = die->child; | |
12714 | struct type *type; | |
12715 | ||
12716 | type = get_die_type (die, cu); | |
12717 | if (type == NULL) | |
12718 | type = read_structure_type (die, cu); | |
12719 | ||
e142c38c | 12720 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
12721 | { |
12722 | struct field_info fi; | |
12723 | struct die_info *child_die; | |
34eaf542 | 12724 | VEC (symbolp) *template_args = NULL; |
c767944b | 12725 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
12726 | |
12727 | memset (&fi, 0, sizeof (struct field_info)); | |
12728 | ||
639d11d3 | 12729 | child_die = die->child; |
c906108c SS |
12730 | |
12731 | while (child_die && child_die->tag) | |
12732 | { | |
a9a9bd0f DC |
12733 | if (child_die->tag == DW_TAG_member |
12734 | || child_die->tag == DW_TAG_variable) | |
c906108c | 12735 | { |
a9a9bd0f DC |
12736 | /* NOTE: carlton/2002-11-05: A C++ static data member |
12737 | should be a DW_TAG_member that is a declaration, but | |
12738 | all versions of G++ as of this writing (so through at | |
12739 | least 3.2.1) incorrectly generate DW_TAG_variable | |
12740 | tags for them instead. */ | |
e7c27a73 | 12741 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 12742 | } |
8713b1b1 | 12743 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 12744 | { |
0963b4bd | 12745 | /* C++ member function. */ |
e7c27a73 | 12746 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
12747 | } |
12748 | else if (child_die->tag == DW_TAG_inheritance) | |
12749 | { | |
12750 | /* C++ base class field. */ | |
e7c27a73 | 12751 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 12752 | } |
98751a41 JK |
12753 | else if (child_die->tag == DW_TAG_typedef) |
12754 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
12755 | else if (child_die->tag == DW_TAG_template_type_param |
12756 | || child_die->tag == DW_TAG_template_value_param) | |
12757 | { | |
12758 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
12759 | ||
f1078f66 DJ |
12760 | if (arg != NULL) |
12761 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
12762 | } |
12763 | ||
c906108c SS |
12764 | child_die = sibling_die (child_die); |
12765 | } | |
12766 | ||
34eaf542 TT |
12767 | /* Attach template arguments to type. */ |
12768 | if (! VEC_empty (symbolp, template_args)) | |
12769 | { | |
12770 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12771 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12772 | = VEC_length (symbolp, template_args); | |
12773 | TYPE_TEMPLATE_ARGUMENTS (type) | |
12774 | = obstack_alloc (&objfile->objfile_obstack, | |
12775 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12776 | * sizeof (struct symbol *))); | |
12777 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
12778 | VEC_address (symbolp, template_args), | |
12779 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12780 | * sizeof (struct symbol *))); | |
12781 | VEC_free (symbolp, template_args); | |
12782 | } | |
12783 | ||
c906108c SS |
12784 | /* Attach fields and member functions to the type. */ |
12785 | if (fi.nfields) | |
e7c27a73 | 12786 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
12787 | if (fi.nfnfields) |
12788 | { | |
e7c27a73 | 12789 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 12790 | |
c5aa993b | 12791 | /* Get the type which refers to the base class (possibly this |
c906108c | 12792 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
12793 | class from the DW_AT_containing_type attribute. This use of |
12794 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 12795 | |
e142c38c | 12796 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 12797 | { |
e7c27a73 | 12798 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
12799 | |
12800 | TYPE_VPTR_BASETYPE (type) = t; | |
12801 | if (type == t) | |
12802 | { | |
c906108c SS |
12803 | int i; |
12804 | ||
12805 | /* Our own class provides vtbl ptr. */ | |
12806 | for (i = TYPE_NFIELDS (t) - 1; | |
12807 | i >= TYPE_N_BASECLASSES (t); | |
12808 | --i) | |
12809 | { | |
0d5cff50 | 12810 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 12811 | |
1168df01 | 12812 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
12813 | { |
12814 | TYPE_VPTR_FIELDNO (type) = i; | |
12815 | break; | |
12816 | } | |
12817 | } | |
12818 | ||
12819 | /* Complain if virtual function table field not found. */ | |
12820 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 12821 | complaint (&symfile_complaints, |
3e43a32a MS |
12822 | _("virtual function table pointer " |
12823 | "not found when defining class '%s'"), | |
4d3c2250 KB |
12824 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
12825 | ""); | |
c906108c SS |
12826 | } |
12827 | else | |
12828 | { | |
12829 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
12830 | } | |
12831 | } | |
f6235d4c EZ |
12832 | else if (cu->producer |
12833 | && strncmp (cu->producer, | |
12834 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
12835 | { | |
12836 | /* The IBM XLC compiler does not provide direct indication | |
12837 | of the containing type, but the vtable pointer is | |
12838 | always named __vfp. */ | |
12839 | ||
12840 | int i; | |
12841 | ||
12842 | for (i = TYPE_NFIELDS (type) - 1; | |
12843 | i >= TYPE_N_BASECLASSES (type); | |
12844 | --i) | |
12845 | { | |
12846 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
12847 | { | |
12848 | TYPE_VPTR_FIELDNO (type) = i; | |
12849 | TYPE_VPTR_BASETYPE (type) = type; | |
12850 | break; | |
12851 | } | |
12852 | } | |
12853 | } | |
c906108c | 12854 | } |
98751a41 JK |
12855 | |
12856 | /* Copy fi.typedef_field_list linked list elements content into the | |
12857 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
12858 | if (fi.typedef_field_list) | |
12859 | { | |
12860 | int i = fi.typedef_field_list_count; | |
12861 | ||
a0d7a4ff | 12862 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
12863 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
12864 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
12865 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
12866 | ||
12867 | /* Reverse the list order to keep the debug info elements order. */ | |
12868 | while (--i >= 0) | |
12869 | { | |
12870 | struct typedef_field *dest, *src; | |
6e70227d | 12871 | |
98751a41 JK |
12872 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
12873 | src = &fi.typedef_field_list->field; | |
12874 | fi.typedef_field_list = fi.typedef_field_list->next; | |
12875 | *dest = *src; | |
12876 | } | |
12877 | } | |
c767944b DJ |
12878 | |
12879 | do_cleanups (back_to); | |
eb2a6f42 TT |
12880 | |
12881 | if (HAVE_CPLUS_STRUCT (type)) | |
12882 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 12883 | } |
63d06c5c | 12884 | |
bb5ed363 | 12885 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 12886 | |
90aeadfc DC |
12887 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
12888 | snapshots) has been known to create a die giving a declaration | |
12889 | for a class that has, as a child, a die giving a definition for a | |
12890 | nested class. So we have to process our children even if the | |
12891 | current die is a declaration. Normally, of course, a declaration | |
12892 | won't have any children at all. */ | |
134d01f1 | 12893 | |
90aeadfc DC |
12894 | while (child_die != NULL && child_die->tag) |
12895 | { | |
12896 | if (child_die->tag == DW_TAG_member | |
12897 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
12898 | || child_die->tag == DW_TAG_inheritance |
12899 | || child_die->tag == DW_TAG_template_value_param | |
12900 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 12901 | { |
90aeadfc | 12902 | /* Do nothing. */ |
134d01f1 | 12903 | } |
90aeadfc DC |
12904 | else |
12905 | process_die (child_die, cu); | |
134d01f1 | 12906 | |
90aeadfc | 12907 | child_die = sibling_die (child_die); |
134d01f1 DJ |
12908 | } |
12909 | ||
fa4028e9 JB |
12910 | /* Do not consider external references. According to the DWARF standard, |
12911 | these DIEs are identified by the fact that they have no byte_size | |
12912 | attribute, and a declaration attribute. */ | |
12913 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
12914 | || !die_is_declaration (die, cu)) | |
c767944b | 12915 | new_symbol (die, type, cu); |
134d01f1 DJ |
12916 | } |
12917 | ||
12918 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
12919 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 12920 | |
f792889a | 12921 | static struct type * |
134d01f1 | 12922 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12923 | { |
e7c27a73 | 12924 | struct objfile *objfile = cu->objfile; |
c906108c | 12925 | struct type *type; |
c906108c | 12926 | struct attribute *attr; |
0114d602 | 12927 | const char *name; |
134d01f1 | 12928 | |
348e048f DE |
12929 | /* If the definition of this type lives in .debug_types, read that type. |
12930 | Don't follow DW_AT_specification though, that will take us back up | |
12931 | the chain and we want to go down. */ | |
45e58e77 | 12932 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
12933 | if (attr) |
12934 | { | |
ac9ec31b | 12935 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 12936 | |
ac9ec31b | 12937 | /* The type's CU may not be the same as CU. |
02142a6c | 12938 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
12939 | return set_die_type (die, type, cu); |
12940 | } | |
12941 | ||
c906108c SS |
12942 | type = alloc_type (objfile); |
12943 | ||
12944 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 12945 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 12946 | if (name != NULL) |
7d455152 | 12947 | TYPE_TAG_NAME (type) = name; |
c906108c | 12948 | |
e142c38c | 12949 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12950 | if (attr) |
12951 | { | |
12952 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
12953 | } | |
12954 | else | |
12955 | { | |
12956 | TYPE_LENGTH (type) = 0; | |
12957 | } | |
12958 | ||
137033e9 JB |
12959 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
12960 | declared as private in the package spec, and then defined only | |
12961 | inside the package body. Such types are known as Taft Amendment | |
12962 | Types. When another package uses such a type, an incomplete DIE | |
12963 | may be generated by the compiler. */ | |
02eb380e | 12964 | if (die_is_declaration (die, cu)) |
876cecd0 | 12965 | TYPE_STUB (type) = 1; |
02eb380e | 12966 | |
f792889a | 12967 | return set_die_type (die, type, cu); |
134d01f1 DJ |
12968 | } |
12969 | ||
12970 | /* Given a pointer to a die which begins an enumeration, process all | |
12971 | the dies that define the members of the enumeration, and create the | |
12972 | symbol for the enumeration type. | |
12973 | ||
12974 | NOTE: We reverse the order of the element list. */ | |
12975 | ||
12976 | static void | |
12977 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
12978 | { | |
f792889a | 12979 | struct type *this_type; |
134d01f1 | 12980 | |
f792889a DJ |
12981 | this_type = get_die_type (die, cu); |
12982 | if (this_type == NULL) | |
12983 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 12984 | |
639d11d3 | 12985 | if (die->child != NULL) |
c906108c | 12986 | { |
9dc481d3 DE |
12987 | struct die_info *child_die; |
12988 | struct symbol *sym; | |
12989 | struct field *fields = NULL; | |
12990 | int num_fields = 0; | |
12991 | int unsigned_enum = 1; | |
15d034d0 | 12992 | const char *name; |
cafec441 TT |
12993 | int flag_enum = 1; |
12994 | ULONGEST mask = 0; | |
9dc481d3 | 12995 | |
639d11d3 | 12996 | child_die = die->child; |
c906108c SS |
12997 | while (child_die && child_die->tag) |
12998 | { | |
12999 | if (child_die->tag != DW_TAG_enumerator) | |
13000 | { | |
e7c27a73 | 13001 | process_die (child_die, cu); |
c906108c SS |
13002 | } |
13003 | else | |
13004 | { | |
39cbfefa DJ |
13005 | name = dwarf2_name (child_die, cu); |
13006 | if (name) | |
c906108c | 13007 | { |
f792889a | 13008 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 13009 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
13010 | { |
13011 | unsigned_enum = 0; | |
13012 | flag_enum = 0; | |
13013 | } | |
13014 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
13015 | flag_enum = 0; | |
13016 | else | |
13017 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
13018 | |
13019 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13020 | { | |
13021 | fields = (struct field *) | |
13022 | xrealloc (fields, | |
13023 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13024 | * sizeof (struct field)); |
c906108c SS |
13025 | } |
13026 | ||
3567439c | 13027 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 13028 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 13029 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
13030 | FIELD_BITSIZE (fields[num_fields]) = 0; |
13031 | ||
13032 | num_fields++; | |
13033 | } | |
13034 | } | |
13035 | ||
13036 | child_die = sibling_die (child_die); | |
13037 | } | |
13038 | ||
13039 | if (num_fields) | |
13040 | { | |
f792889a DJ |
13041 | TYPE_NFIELDS (this_type) = num_fields; |
13042 | TYPE_FIELDS (this_type) = (struct field *) | |
13043 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
13044 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 13045 | sizeof (struct field) * num_fields); |
b8c9b27d | 13046 | xfree (fields); |
c906108c SS |
13047 | } |
13048 | if (unsigned_enum) | |
876cecd0 | 13049 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
13050 | if (flag_enum) |
13051 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 13052 | } |
134d01f1 | 13053 | |
6c83ed52 TT |
13054 | /* If we are reading an enum from a .debug_types unit, and the enum |
13055 | is a declaration, and the enum is not the signatured type in the | |
13056 | unit, then we do not want to add a symbol for it. Adding a | |
13057 | symbol would in some cases obscure the true definition of the | |
13058 | enum, giving users an incomplete type when the definition is | |
13059 | actually available. Note that we do not want to do this for all | |
13060 | enums which are just declarations, because C++0x allows forward | |
13061 | enum declarations. */ | |
3019eac3 | 13062 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
13063 | && die_is_declaration (die, cu)) |
13064 | { | |
52dc124a | 13065 | struct signatured_type *sig_type; |
6c83ed52 | 13066 | |
c0f78cd4 | 13067 | sig_type = (struct signatured_type *) cu->per_cu; |
3019eac3 DE |
13068 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
13069 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
13070 | return; |
13071 | } | |
13072 | ||
f792889a | 13073 | new_symbol (die, this_type, cu); |
c906108c SS |
13074 | } |
13075 | ||
13076 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
13077 | the DIE's type field. For now, this only handles one dimensional | |
13078 | arrays. */ | |
13079 | ||
f792889a | 13080 | static struct type * |
e7c27a73 | 13081 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13082 | { |
e7c27a73 | 13083 | struct objfile *objfile = cu->objfile; |
c906108c | 13084 | struct die_info *child_die; |
7e314c57 | 13085 | struct type *type; |
c906108c SS |
13086 | struct type *element_type, *range_type, *index_type; |
13087 | struct type **range_types = NULL; | |
13088 | struct attribute *attr; | |
13089 | int ndim = 0; | |
13090 | struct cleanup *back_to; | |
15d034d0 | 13091 | const char *name; |
c906108c | 13092 | |
e7c27a73 | 13093 | element_type = die_type (die, cu); |
c906108c | 13094 | |
7e314c57 JK |
13095 | /* The die_type call above may have already set the type for this DIE. */ |
13096 | type = get_die_type (die, cu); | |
13097 | if (type) | |
13098 | return type; | |
13099 | ||
c906108c SS |
13100 | /* Irix 6.2 native cc creates array types without children for |
13101 | arrays with unspecified length. */ | |
639d11d3 | 13102 | if (die->child == NULL) |
c906108c | 13103 | { |
46bf5051 | 13104 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 13105 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
13106 | type = create_array_type (NULL, element_type, range_type); |
13107 | return set_die_type (die, type, cu); | |
c906108c SS |
13108 | } |
13109 | ||
13110 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 13111 | child_die = die->child; |
c906108c SS |
13112 | while (child_die && child_die->tag) |
13113 | { | |
13114 | if (child_die->tag == DW_TAG_subrange_type) | |
13115 | { | |
f792889a | 13116 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 13117 | |
f792889a | 13118 | if (child_type != NULL) |
a02abb62 | 13119 | { |
0963b4bd MS |
13120 | /* The range type was succesfully read. Save it for the |
13121 | array type creation. */ | |
a02abb62 JB |
13122 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
13123 | { | |
13124 | range_types = (struct type **) | |
13125 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
13126 | * sizeof (struct type *)); | |
13127 | if (ndim == 0) | |
13128 | make_cleanup (free_current_contents, &range_types); | |
13129 | } | |
f792889a | 13130 | range_types[ndim++] = child_type; |
a02abb62 | 13131 | } |
c906108c SS |
13132 | } |
13133 | child_die = sibling_die (child_die); | |
13134 | } | |
13135 | ||
13136 | /* Dwarf2 dimensions are output from left to right, create the | |
13137 | necessary array types in backwards order. */ | |
7ca2d3a3 | 13138 | |
c906108c | 13139 | type = element_type; |
7ca2d3a3 DL |
13140 | |
13141 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
13142 | { | |
13143 | int i = 0; | |
9a619af0 | 13144 | |
7ca2d3a3 DL |
13145 | while (i < ndim) |
13146 | type = create_array_type (NULL, type, range_types[i++]); | |
13147 | } | |
13148 | else | |
13149 | { | |
13150 | while (ndim-- > 0) | |
13151 | type = create_array_type (NULL, type, range_types[ndim]); | |
13152 | } | |
c906108c | 13153 | |
f5f8a009 EZ |
13154 | /* Understand Dwarf2 support for vector types (like they occur on |
13155 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
13156 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
13157 | custom vendor extension. The main difference between a regular | |
13158 | array and the vector variant is that vectors are passed by value | |
13159 | to functions. */ | |
e142c38c | 13160 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 13161 | if (attr) |
ea37ba09 | 13162 | make_vector_type (type); |
f5f8a009 | 13163 | |
dbc98a8b KW |
13164 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
13165 | implementation may choose to implement triple vectors using this | |
13166 | attribute. */ | |
13167 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
13168 | if (attr) | |
13169 | { | |
13170 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
13171 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13172 | else | |
3e43a32a MS |
13173 | complaint (&symfile_complaints, |
13174 | _("DW_AT_byte_size for array type smaller " | |
13175 | "than the total size of elements")); | |
dbc98a8b KW |
13176 | } |
13177 | ||
39cbfefa DJ |
13178 | name = dwarf2_name (die, cu); |
13179 | if (name) | |
13180 | TYPE_NAME (type) = name; | |
6e70227d | 13181 | |
0963b4bd | 13182 | /* Install the type in the die. */ |
7e314c57 JK |
13183 | set_die_type (die, type, cu); |
13184 | ||
13185 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
13186 | set_descriptive_type (type, die, cu); |
13187 | ||
c906108c SS |
13188 | do_cleanups (back_to); |
13189 | ||
7e314c57 | 13190 | return type; |
c906108c SS |
13191 | } |
13192 | ||
7ca2d3a3 | 13193 | static enum dwarf_array_dim_ordering |
6e70227d | 13194 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
13195 | { |
13196 | struct attribute *attr; | |
13197 | ||
13198 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
13199 | ||
13200 | if (attr) return DW_SND (attr); | |
13201 | ||
0963b4bd MS |
13202 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
13203 | opposite order to the dwarf2 specification, but data is still | |
13204 | laid out as per normal fortran. | |
7ca2d3a3 | 13205 | |
0963b4bd MS |
13206 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
13207 | version checking. */ | |
7ca2d3a3 | 13208 | |
905e0470 PM |
13209 | if (cu->language == language_fortran |
13210 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
13211 | { |
13212 | return DW_ORD_row_major; | |
13213 | } | |
13214 | ||
6e70227d | 13215 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
13216 | { |
13217 | case array_column_major: | |
13218 | return DW_ORD_col_major; | |
13219 | case array_row_major: | |
13220 | default: | |
13221 | return DW_ORD_row_major; | |
13222 | }; | |
13223 | } | |
13224 | ||
72019c9c | 13225 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 13226 | the DIE's type field. */ |
72019c9c | 13227 | |
f792889a | 13228 | static struct type * |
72019c9c GM |
13229 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
13230 | { | |
7e314c57 JK |
13231 | struct type *domain_type, *set_type; |
13232 | struct attribute *attr; | |
f792889a | 13233 | |
7e314c57 JK |
13234 | domain_type = die_type (die, cu); |
13235 | ||
13236 | /* The die_type call above may have already set the type for this DIE. */ | |
13237 | set_type = get_die_type (die, cu); | |
13238 | if (set_type) | |
13239 | return set_type; | |
13240 | ||
13241 | set_type = create_set_type (NULL, domain_type); | |
13242 | ||
13243 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
13244 | if (attr) |
13245 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 13246 | |
f792889a | 13247 | return set_die_type (die, set_type, cu); |
72019c9c | 13248 | } |
7ca2d3a3 | 13249 | |
0971de02 TT |
13250 | /* A helper for read_common_block that creates a locexpr baton. |
13251 | SYM is the symbol which we are marking as computed. | |
13252 | COMMON_DIE is the DIE for the common block. | |
13253 | COMMON_LOC is the location expression attribute for the common | |
13254 | block itself. | |
13255 | MEMBER_LOC is the location expression attribute for the particular | |
13256 | member of the common block that we are processing. | |
13257 | CU is the CU from which the above come. */ | |
13258 | ||
13259 | static void | |
13260 | mark_common_block_symbol_computed (struct symbol *sym, | |
13261 | struct die_info *common_die, | |
13262 | struct attribute *common_loc, | |
13263 | struct attribute *member_loc, | |
13264 | struct dwarf2_cu *cu) | |
13265 | { | |
13266 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13267 | struct dwarf2_locexpr_baton *baton; | |
13268 | gdb_byte *ptr; | |
13269 | unsigned int cu_off; | |
13270 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
13271 | LONGEST offset = 0; | |
13272 | ||
13273 | gdb_assert (common_loc && member_loc); | |
13274 | gdb_assert (attr_form_is_block (common_loc)); | |
13275 | gdb_assert (attr_form_is_block (member_loc) | |
13276 | || attr_form_is_constant (member_loc)); | |
13277 | ||
13278 | baton = obstack_alloc (&objfile->objfile_obstack, | |
13279 | sizeof (struct dwarf2_locexpr_baton)); | |
13280 | baton->per_cu = cu->per_cu; | |
13281 | gdb_assert (baton->per_cu); | |
13282 | ||
13283 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
13284 | ||
13285 | if (attr_form_is_constant (member_loc)) | |
13286 | { | |
13287 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
13288 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
13289 | } | |
13290 | else | |
13291 | baton->size += DW_BLOCK (member_loc)->size; | |
13292 | ||
13293 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
13294 | baton->data = ptr; | |
13295 | ||
13296 | *ptr++ = DW_OP_call4; | |
13297 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
13298 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
13299 | ptr += 4; | |
13300 | ||
13301 | if (attr_form_is_constant (member_loc)) | |
13302 | { | |
13303 | *ptr++ = DW_OP_addr; | |
13304 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
13305 | ptr += cu->header.addr_size; | |
13306 | } | |
13307 | else | |
13308 | { | |
13309 | /* We have to copy the data here, because DW_OP_call4 will only | |
13310 | use a DW_AT_location attribute. */ | |
13311 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
13312 | ptr += DW_BLOCK (member_loc)->size; | |
13313 | } | |
13314 | ||
13315 | *ptr++ = DW_OP_plus; | |
13316 | gdb_assert (ptr - baton->data == baton->size); | |
13317 | ||
0971de02 | 13318 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 13319 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
13320 | } |
13321 | ||
4357ac6c TT |
13322 | /* Create appropriate locally-scoped variables for all the |
13323 | DW_TAG_common_block entries. Also create a struct common_block | |
13324 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
13325 | is used to sepate the common blocks name namespace from regular | |
13326 | variable names. */ | |
c906108c SS |
13327 | |
13328 | static void | |
e7c27a73 | 13329 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13330 | { |
0971de02 TT |
13331 | struct attribute *attr; |
13332 | ||
13333 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13334 | if (attr) | |
13335 | { | |
13336 | /* Support the .debug_loc offsets. */ | |
13337 | if (attr_form_is_block (attr)) | |
13338 | { | |
13339 | /* Ok. */ | |
13340 | } | |
13341 | else if (attr_form_is_section_offset (attr)) | |
13342 | { | |
13343 | dwarf2_complex_location_expr_complaint (); | |
13344 | attr = NULL; | |
13345 | } | |
13346 | else | |
13347 | { | |
13348 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
13349 | "common block member"); | |
13350 | attr = NULL; | |
13351 | } | |
13352 | } | |
13353 | ||
639d11d3 | 13354 | if (die->child != NULL) |
c906108c | 13355 | { |
4357ac6c TT |
13356 | struct objfile *objfile = cu->objfile; |
13357 | struct die_info *child_die; | |
13358 | size_t n_entries = 0, size; | |
13359 | struct common_block *common_block; | |
13360 | struct symbol *sym; | |
74ac6d43 | 13361 | |
4357ac6c TT |
13362 | for (child_die = die->child; |
13363 | child_die && child_die->tag; | |
13364 | child_die = sibling_die (child_die)) | |
13365 | ++n_entries; | |
13366 | ||
13367 | size = (sizeof (struct common_block) | |
13368 | + (n_entries - 1) * sizeof (struct symbol *)); | |
13369 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
13370 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
13371 | common_block->n_entries = 0; | |
13372 | ||
13373 | for (child_die = die->child; | |
13374 | child_die && child_die->tag; | |
13375 | child_die = sibling_die (child_die)) | |
13376 | { | |
13377 | /* Create the symbol in the DW_TAG_common_block block in the current | |
13378 | symbol scope. */ | |
e7c27a73 | 13379 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
13380 | if (sym != NULL) |
13381 | { | |
13382 | struct attribute *member_loc; | |
13383 | ||
13384 | common_block->contents[common_block->n_entries++] = sym; | |
13385 | ||
13386 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
13387 | cu); | |
13388 | if (member_loc) | |
13389 | { | |
13390 | /* GDB has handled this for a long time, but it is | |
13391 | not specified by DWARF. It seems to have been | |
13392 | emitted by gfortran at least as recently as: | |
13393 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
13394 | complaint (&symfile_complaints, | |
13395 | _("Variable in common block has " | |
13396 | "DW_AT_data_member_location " | |
13397 | "- DIE at 0x%x [in module %s]"), | |
4262abfb JK |
13398 | child_die->offset.sect_off, |
13399 | objfile_name (cu->objfile)); | |
0971de02 TT |
13400 | |
13401 | if (attr_form_is_section_offset (member_loc)) | |
13402 | dwarf2_complex_location_expr_complaint (); | |
13403 | else if (attr_form_is_constant (member_loc) | |
13404 | || attr_form_is_block (member_loc)) | |
13405 | { | |
13406 | if (attr) | |
13407 | mark_common_block_symbol_computed (sym, die, attr, | |
13408 | member_loc, cu); | |
13409 | } | |
13410 | else | |
13411 | dwarf2_complex_location_expr_complaint (); | |
13412 | } | |
13413 | } | |
c906108c | 13414 | } |
4357ac6c TT |
13415 | |
13416 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
13417 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
13418 | } |
13419 | } | |
13420 | ||
0114d602 | 13421 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 13422 | |
0114d602 DJ |
13423 | static struct type * |
13424 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 13425 | { |
e7c27a73 | 13426 | struct objfile *objfile = cu->objfile; |
0114d602 | 13427 | const char *previous_prefix, *name; |
9219021c | 13428 | int is_anonymous; |
0114d602 DJ |
13429 | struct type *type; |
13430 | ||
13431 | /* For extensions, reuse the type of the original namespace. */ | |
13432 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
13433 | { | |
13434 | struct die_info *ext_die; | |
13435 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 13436 | |
0114d602 DJ |
13437 | ext_die = dwarf2_extension (die, &ext_cu); |
13438 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
13439 | |
13440 | /* EXT_CU may not be the same as CU. | |
02142a6c | 13441 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
13442 | return set_die_type (die, type, cu); |
13443 | } | |
9219021c | 13444 | |
e142c38c | 13445 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
13446 | |
13447 | /* Now build the name of the current namespace. */ | |
13448 | ||
0114d602 DJ |
13449 | previous_prefix = determine_prefix (die, cu); |
13450 | if (previous_prefix[0] != '\0') | |
13451 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 13452 | previous_prefix, name, 0, cu); |
0114d602 DJ |
13453 | |
13454 | /* Create the type. */ | |
13455 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
13456 | objfile); | |
abee88f2 | 13457 | TYPE_NAME (type) = name; |
0114d602 DJ |
13458 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
13459 | ||
60531b24 | 13460 | return set_die_type (die, type, cu); |
0114d602 DJ |
13461 | } |
13462 | ||
13463 | /* Read a C++ namespace. */ | |
13464 | ||
13465 | static void | |
13466 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
13467 | { | |
13468 | struct objfile *objfile = cu->objfile; | |
0114d602 | 13469 | int is_anonymous; |
9219021c | 13470 | |
5c4e30ca DC |
13471 | /* Add a symbol associated to this if we haven't seen the namespace |
13472 | before. Also, add a using directive if it's an anonymous | |
13473 | namespace. */ | |
9219021c | 13474 | |
f2f0e013 | 13475 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
13476 | { |
13477 | struct type *type; | |
13478 | ||
0114d602 | 13479 | type = read_type_die (die, cu); |
e7c27a73 | 13480 | new_symbol (die, type, cu); |
5c4e30ca | 13481 | |
e8e80198 | 13482 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 13483 | if (is_anonymous) |
0114d602 DJ |
13484 | { |
13485 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 13486 | |
c0cc3a76 | 13487 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
12aaed36 | 13488 | NULL, NULL, 0, &objfile->objfile_obstack); |
0114d602 | 13489 | } |
5c4e30ca | 13490 | } |
9219021c | 13491 | |
639d11d3 | 13492 | if (die->child != NULL) |
d9fa45fe | 13493 | { |
639d11d3 | 13494 | struct die_info *child_die = die->child; |
6e70227d | 13495 | |
d9fa45fe DC |
13496 | while (child_die && child_die->tag) |
13497 | { | |
e7c27a73 | 13498 | process_die (child_die, cu); |
d9fa45fe DC |
13499 | child_die = sibling_die (child_die); |
13500 | } | |
13501 | } | |
38d518c9 EZ |
13502 | } |
13503 | ||
f55ee35c JK |
13504 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
13505 | imported module. Still we need that type as local Fortran "use ... only" | |
13506 | declaration imports depend on the created type in determine_prefix. */ | |
13507 | ||
13508 | static struct type * | |
13509 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
13510 | { | |
13511 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 13512 | const char *module_name; |
f55ee35c JK |
13513 | struct type *type; |
13514 | ||
13515 | module_name = dwarf2_name (die, cu); | |
13516 | if (!module_name) | |
3e43a32a MS |
13517 | complaint (&symfile_complaints, |
13518 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 13519 | die->offset.sect_off); |
f55ee35c JK |
13520 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
13521 | ||
13522 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
13523 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
13524 | ||
13525 | return set_die_type (die, type, cu); | |
13526 | } | |
13527 | ||
5d7cb8df JK |
13528 | /* Read a Fortran module. */ |
13529 | ||
13530 | static void | |
13531 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
13532 | { | |
13533 | struct die_info *child_die = die->child; | |
13534 | ||
5d7cb8df JK |
13535 | while (child_die && child_die->tag) |
13536 | { | |
13537 | process_die (child_die, cu); | |
13538 | child_die = sibling_die (child_die); | |
13539 | } | |
13540 | } | |
13541 | ||
38d518c9 EZ |
13542 | /* Return the name of the namespace represented by DIE. Set |
13543 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
13544 | namespace. */ | |
13545 | ||
13546 | static const char * | |
e142c38c | 13547 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
13548 | { |
13549 | struct die_info *current_die; | |
13550 | const char *name = NULL; | |
13551 | ||
13552 | /* Loop through the extensions until we find a name. */ | |
13553 | ||
13554 | for (current_die = die; | |
13555 | current_die != NULL; | |
f2f0e013 | 13556 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 13557 | { |
e142c38c | 13558 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
13559 | if (name != NULL) |
13560 | break; | |
13561 | } | |
13562 | ||
13563 | /* Is it an anonymous namespace? */ | |
13564 | ||
13565 | *is_anonymous = (name == NULL); | |
13566 | if (*is_anonymous) | |
2b1dbab0 | 13567 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
13568 | |
13569 | return name; | |
d9fa45fe DC |
13570 | } |
13571 | ||
c906108c SS |
13572 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
13573 | the user defined type vector. */ | |
13574 | ||
f792889a | 13575 | static struct type * |
e7c27a73 | 13576 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13577 | { |
5e2b427d | 13578 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 13579 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 13580 | struct type *type; |
8b2dbe47 KB |
13581 | struct attribute *attr_byte_size; |
13582 | struct attribute *attr_address_class; | |
13583 | int byte_size, addr_class; | |
7e314c57 JK |
13584 | struct type *target_type; |
13585 | ||
13586 | target_type = die_type (die, cu); | |
c906108c | 13587 | |
7e314c57 JK |
13588 | /* The die_type call above may have already set the type for this DIE. */ |
13589 | type = get_die_type (die, cu); | |
13590 | if (type) | |
13591 | return type; | |
13592 | ||
13593 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 13594 | |
e142c38c | 13595 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
13596 | if (attr_byte_size) |
13597 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 13598 | else |
8b2dbe47 KB |
13599 | byte_size = cu_header->addr_size; |
13600 | ||
e142c38c | 13601 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
13602 | if (attr_address_class) |
13603 | addr_class = DW_UNSND (attr_address_class); | |
13604 | else | |
13605 | addr_class = DW_ADDR_none; | |
13606 | ||
13607 | /* If the pointer size or address class is different than the | |
13608 | default, create a type variant marked as such and set the | |
13609 | length accordingly. */ | |
13610 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 13611 | { |
5e2b427d | 13612 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
13613 | { |
13614 | int type_flags; | |
13615 | ||
849957d9 | 13616 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 13617 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
13618 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
13619 | == 0); | |
8b2dbe47 KB |
13620 | type = make_type_with_address_space (type, type_flags); |
13621 | } | |
13622 | else if (TYPE_LENGTH (type) != byte_size) | |
13623 | { | |
3e43a32a MS |
13624 | complaint (&symfile_complaints, |
13625 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 13626 | } |
6e70227d | 13627 | else |
9a619af0 MS |
13628 | { |
13629 | /* Should we also complain about unhandled address classes? */ | |
13630 | } | |
c906108c | 13631 | } |
8b2dbe47 KB |
13632 | |
13633 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 13634 | return set_die_type (die, type, cu); |
c906108c SS |
13635 | } |
13636 | ||
13637 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
13638 | the user defined type vector. */ | |
13639 | ||
f792889a | 13640 | static struct type * |
e7c27a73 | 13641 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
13642 | { |
13643 | struct type *type; | |
13644 | struct type *to_type; | |
13645 | struct type *domain; | |
13646 | ||
e7c27a73 DJ |
13647 | to_type = die_type (die, cu); |
13648 | domain = die_containing_type (die, cu); | |
0d5de010 | 13649 | |
7e314c57 JK |
13650 | /* The calls above may have already set the type for this DIE. */ |
13651 | type = get_die_type (die, cu); | |
13652 | if (type) | |
13653 | return type; | |
13654 | ||
0d5de010 DJ |
13655 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
13656 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
13657 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
13658 | { | |
13659 | struct type *new_type = alloc_type (cu->objfile); | |
13660 | ||
13661 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
13662 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
13663 | TYPE_VARARGS (to_type)); | |
13664 | type = lookup_methodptr_type (new_type); | |
13665 | } | |
0d5de010 DJ |
13666 | else |
13667 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 13668 | |
f792889a | 13669 | return set_die_type (die, type, cu); |
c906108c SS |
13670 | } |
13671 | ||
13672 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
13673 | the user defined type vector. */ | |
13674 | ||
f792889a | 13675 | static struct type * |
e7c27a73 | 13676 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13677 | { |
e7c27a73 | 13678 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 13679 | struct type *type, *target_type; |
c906108c SS |
13680 | struct attribute *attr; |
13681 | ||
7e314c57 JK |
13682 | target_type = die_type (die, cu); |
13683 | ||
13684 | /* The die_type call above may have already set the type for this DIE. */ | |
13685 | type = get_die_type (die, cu); | |
13686 | if (type) | |
13687 | return type; | |
13688 | ||
13689 | type = lookup_reference_type (target_type); | |
e142c38c | 13690 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13691 | if (attr) |
13692 | { | |
13693 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13694 | } | |
13695 | else | |
13696 | { | |
107d2387 | 13697 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 13698 | } |
f792889a | 13699 | return set_die_type (die, type, cu); |
c906108c SS |
13700 | } |
13701 | ||
f792889a | 13702 | static struct type * |
e7c27a73 | 13703 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13704 | { |
f792889a | 13705 | struct type *base_type, *cv_type; |
c906108c | 13706 | |
e7c27a73 | 13707 | base_type = die_type (die, cu); |
7e314c57 JK |
13708 | |
13709 | /* The die_type call above may have already set the type for this DIE. */ | |
13710 | cv_type = get_die_type (die, cu); | |
13711 | if (cv_type) | |
13712 | return cv_type; | |
13713 | ||
2f608a3a KW |
13714 | /* In case the const qualifier is applied to an array type, the element type |
13715 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
13716 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
13717 | { | |
13718 | struct type *el_type, *inner_array; | |
13719 | ||
13720 | base_type = copy_type (base_type); | |
13721 | inner_array = base_type; | |
13722 | ||
13723 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
13724 | { | |
13725 | TYPE_TARGET_TYPE (inner_array) = | |
13726 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
13727 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
13728 | } | |
13729 | ||
13730 | el_type = TYPE_TARGET_TYPE (inner_array); | |
13731 | TYPE_TARGET_TYPE (inner_array) = | |
13732 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
13733 | ||
13734 | return set_die_type (die, base_type, cu); | |
13735 | } | |
13736 | ||
f792889a DJ |
13737 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
13738 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
13739 | } |
13740 | ||
f792889a | 13741 | static struct type * |
e7c27a73 | 13742 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13743 | { |
f792889a | 13744 | struct type *base_type, *cv_type; |
c906108c | 13745 | |
e7c27a73 | 13746 | base_type = die_type (die, cu); |
7e314c57 JK |
13747 | |
13748 | /* The die_type call above may have already set the type for this DIE. */ | |
13749 | cv_type = get_die_type (die, cu); | |
13750 | if (cv_type) | |
13751 | return cv_type; | |
13752 | ||
f792889a DJ |
13753 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
13754 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
13755 | } |
13756 | ||
06d66ee9 TT |
13757 | /* Handle DW_TAG_restrict_type. */ |
13758 | ||
13759 | static struct type * | |
13760 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
13761 | { | |
13762 | struct type *base_type, *cv_type; | |
13763 | ||
13764 | base_type = die_type (die, cu); | |
13765 | ||
13766 | /* The die_type call above may have already set the type for this DIE. */ | |
13767 | cv_type = get_die_type (die, cu); | |
13768 | if (cv_type) | |
13769 | return cv_type; | |
13770 | ||
13771 | cv_type = make_restrict_type (base_type); | |
13772 | return set_die_type (die, cv_type, cu); | |
13773 | } | |
13774 | ||
c906108c SS |
13775 | /* Extract all information from a DW_TAG_string_type DIE and add to |
13776 | the user defined type vector. It isn't really a user defined type, | |
13777 | but it behaves like one, with other DIE's using an AT_user_def_type | |
13778 | attribute to reference it. */ | |
13779 | ||
f792889a | 13780 | static struct type * |
e7c27a73 | 13781 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13782 | { |
e7c27a73 | 13783 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 13784 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13785 | struct type *type, *range_type, *index_type, *char_type; |
13786 | struct attribute *attr; | |
13787 | unsigned int length; | |
13788 | ||
e142c38c | 13789 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
13790 | if (attr) |
13791 | { | |
13792 | length = DW_UNSND (attr); | |
13793 | } | |
13794 | else | |
13795 | { | |
0963b4bd | 13796 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 13797 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
13798 | if (attr) |
13799 | { | |
13800 | length = DW_UNSND (attr); | |
13801 | } | |
13802 | else | |
13803 | { | |
13804 | length = 1; | |
13805 | } | |
c906108c | 13806 | } |
6ccb9162 | 13807 | |
46bf5051 | 13808 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 13809 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
13810 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
13811 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 13812 | |
f792889a | 13813 | return set_die_type (die, type, cu); |
c906108c SS |
13814 | } |
13815 | ||
4d804846 JB |
13816 | /* Assuming that DIE corresponds to a function, returns nonzero |
13817 | if the function is prototyped. */ | |
13818 | ||
13819 | static int | |
13820 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
13821 | { | |
13822 | struct attribute *attr; | |
13823 | ||
13824 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
13825 | if (attr && (DW_UNSND (attr) != 0)) | |
13826 | return 1; | |
13827 | ||
13828 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
13829 | is only meaninful for C, but the concept also extends to other | |
13830 | languages that allow unprototyped functions (Eg: Objective C). | |
13831 | For all other languages, assume that functions are always | |
13832 | prototyped. */ | |
13833 | if (cu->language != language_c | |
13834 | && cu->language != language_objc | |
13835 | && cu->language != language_opencl) | |
13836 | return 1; | |
13837 | ||
13838 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
13839 | prototyped and unprototyped functions; default to prototyped, | |
13840 | since that is more common in modern code (and RealView warns | |
13841 | about unprototyped functions). */ | |
13842 | if (producer_is_realview (cu->producer)) | |
13843 | return 1; | |
13844 | ||
13845 | return 0; | |
13846 | } | |
13847 | ||
c906108c SS |
13848 | /* Handle DIES due to C code like: |
13849 | ||
13850 | struct foo | |
c5aa993b JM |
13851 | { |
13852 | int (*funcp)(int a, long l); | |
13853 | int b; | |
13854 | }; | |
c906108c | 13855 | |
0963b4bd | 13856 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 13857 | |
f792889a | 13858 | static struct type * |
e7c27a73 | 13859 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13860 | { |
bb5ed363 | 13861 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
13862 | struct type *type; /* Type that this function returns. */ |
13863 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
13864 | struct attribute *attr; |
13865 | ||
e7c27a73 | 13866 | type = die_type (die, cu); |
7e314c57 JK |
13867 | |
13868 | /* The die_type call above may have already set the type for this DIE. */ | |
13869 | ftype = get_die_type (die, cu); | |
13870 | if (ftype) | |
13871 | return ftype; | |
13872 | ||
0c8b41f1 | 13873 | ftype = lookup_function_type (type); |
c906108c | 13874 | |
4d804846 | 13875 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 13876 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 13877 | |
c055b101 CV |
13878 | /* Store the calling convention in the type if it's available in |
13879 | the subroutine die. Otherwise set the calling convention to | |
13880 | the default value DW_CC_normal. */ | |
13881 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
13882 | if (attr) |
13883 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
13884 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
13885 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
13886 | else | |
13887 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
13888 | |
13889 | /* We need to add the subroutine type to the die immediately so | |
13890 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 13891 | declared as the same subroutine type. */ |
76c10ea2 | 13892 | set_die_type (die, ftype, cu); |
6e70227d | 13893 | |
639d11d3 | 13894 | if (die->child != NULL) |
c906108c | 13895 | { |
bb5ed363 | 13896 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 13897 | struct die_info *child_die; |
8072405b | 13898 | int nparams, iparams; |
c906108c SS |
13899 | |
13900 | /* Count the number of parameters. | |
13901 | FIXME: GDB currently ignores vararg functions, but knows about | |
13902 | vararg member functions. */ | |
8072405b | 13903 | nparams = 0; |
639d11d3 | 13904 | child_die = die->child; |
c906108c SS |
13905 | while (child_die && child_die->tag) |
13906 | { | |
13907 | if (child_die->tag == DW_TAG_formal_parameter) | |
13908 | nparams++; | |
13909 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 13910 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
13911 | child_die = sibling_die (child_die); |
13912 | } | |
13913 | ||
13914 | /* Allocate storage for parameters and fill them in. */ | |
13915 | TYPE_NFIELDS (ftype) = nparams; | |
13916 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 13917 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 13918 | |
8072405b JK |
13919 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
13920 | even if we error out during the parameters reading below. */ | |
13921 | for (iparams = 0; iparams < nparams; iparams++) | |
13922 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
13923 | ||
13924 | iparams = 0; | |
639d11d3 | 13925 | child_die = die->child; |
c906108c SS |
13926 | while (child_die && child_die->tag) |
13927 | { | |
13928 | if (child_die->tag == DW_TAG_formal_parameter) | |
13929 | { | |
3ce3b1ba PA |
13930 | struct type *arg_type; |
13931 | ||
13932 | /* DWARF version 2 has no clean way to discern C++ | |
13933 | static and non-static member functions. G++ helps | |
13934 | GDB by marking the first parameter for non-static | |
13935 | member functions (which is the this pointer) as | |
13936 | artificial. We pass this information to | |
13937 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
13938 | ||
13939 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
13940 | 4.5 does not yet generate. */ | |
e142c38c | 13941 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
13942 | if (attr) |
13943 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
13944 | else | |
418835cc KS |
13945 | { |
13946 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
13947 | ||
13948 | /* GCC/43521: In java, the formal parameter | |
13949 | "this" is sometimes not marked with DW_AT_artificial. */ | |
13950 | if (cu->language == language_java) | |
13951 | { | |
13952 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 13953 | |
418835cc KS |
13954 | if (name && !strcmp (name, "this")) |
13955 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
13956 | } | |
13957 | } | |
3ce3b1ba PA |
13958 | arg_type = die_type (child_die, cu); |
13959 | ||
13960 | /* RealView does not mark THIS as const, which the testsuite | |
13961 | expects. GCC marks THIS as const in method definitions, | |
13962 | but not in the class specifications (GCC PR 43053). */ | |
13963 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
13964 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
13965 | { | |
13966 | int is_this = 0; | |
13967 | struct dwarf2_cu *arg_cu = cu; | |
13968 | const char *name = dwarf2_name (child_die, cu); | |
13969 | ||
13970 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
13971 | if (attr) | |
13972 | { | |
13973 | /* If the compiler emits this, use it. */ | |
13974 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
13975 | is_this = 1; | |
13976 | } | |
13977 | else if (name && strcmp (name, "this") == 0) | |
13978 | /* Function definitions will have the argument names. */ | |
13979 | is_this = 1; | |
13980 | else if (name == NULL && iparams == 0) | |
13981 | /* Declarations may not have the names, so like | |
13982 | elsewhere in GDB, assume an artificial first | |
13983 | argument is "this". */ | |
13984 | is_this = 1; | |
13985 | ||
13986 | if (is_this) | |
13987 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
13988 | arg_type, 0); | |
13989 | } | |
13990 | ||
13991 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
13992 | iparams++; |
13993 | } | |
13994 | child_die = sibling_die (child_die); | |
13995 | } | |
13996 | } | |
13997 | ||
76c10ea2 | 13998 | return ftype; |
c906108c SS |
13999 | } |
14000 | ||
f792889a | 14001 | static struct type * |
e7c27a73 | 14002 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14003 | { |
e7c27a73 | 14004 | struct objfile *objfile = cu->objfile; |
0114d602 | 14005 | const char *name = NULL; |
3c8e0968 | 14006 | struct type *this_type, *target_type; |
c906108c | 14007 | |
94af9270 | 14008 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 14009 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 | 14010 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
abee88f2 | 14011 | TYPE_NAME (this_type) = name; |
f792889a | 14012 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
14013 | target_type = die_type (die, cu); |
14014 | if (target_type != this_type) | |
14015 | TYPE_TARGET_TYPE (this_type) = target_type; | |
14016 | else | |
14017 | { | |
14018 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
14019 | spec and cause infinite loops in GDB. */ | |
14020 | complaint (&symfile_complaints, | |
14021 | _("Self-referential DW_TAG_typedef " | |
14022 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14023 | die->offset.sect_off, objfile_name (objfile)); |
3c8e0968 DE |
14024 | TYPE_TARGET_TYPE (this_type) = NULL; |
14025 | } | |
f792889a | 14026 | return this_type; |
c906108c SS |
14027 | } |
14028 | ||
14029 | /* Find a representation of a given base type and install | |
14030 | it in the TYPE field of the die. */ | |
14031 | ||
f792889a | 14032 | static struct type * |
e7c27a73 | 14033 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14034 | { |
e7c27a73 | 14035 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14036 | struct type *type; |
14037 | struct attribute *attr; | |
14038 | int encoding = 0, size = 0; | |
15d034d0 | 14039 | const char *name; |
6ccb9162 UW |
14040 | enum type_code code = TYPE_CODE_INT; |
14041 | int type_flags = 0; | |
14042 | struct type *target_type = NULL; | |
c906108c | 14043 | |
e142c38c | 14044 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
14045 | if (attr) |
14046 | { | |
14047 | encoding = DW_UNSND (attr); | |
14048 | } | |
e142c38c | 14049 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14050 | if (attr) |
14051 | { | |
14052 | size = DW_UNSND (attr); | |
14053 | } | |
39cbfefa | 14054 | name = dwarf2_name (die, cu); |
6ccb9162 | 14055 | if (!name) |
c906108c | 14056 | { |
6ccb9162 UW |
14057 | complaint (&symfile_complaints, |
14058 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 14059 | } |
6ccb9162 UW |
14060 | |
14061 | switch (encoding) | |
c906108c | 14062 | { |
6ccb9162 UW |
14063 | case DW_ATE_address: |
14064 | /* Turn DW_ATE_address into a void * pointer. */ | |
14065 | code = TYPE_CODE_PTR; | |
14066 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14067 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
14068 | break; | |
14069 | case DW_ATE_boolean: | |
14070 | code = TYPE_CODE_BOOL; | |
14071 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14072 | break; | |
14073 | case DW_ATE_complex_float: | |
14074 | code = TYPE_CODE_COMPLEX; | |
14075 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
14076 | break; | |
14077 | case DW_ATE_decimal_float: | |
14078 | code = TYPE_CODE_DECFLOAT; | |
14079 | break; | |
14080 | case DW_ATE_float: | |
14081 | code = TYPE_CODE_FLT; | |
14082 | break; | |
14083 | case DW_ATE_signed: | |
14084 | break; | |
14085 | case DW_ATE_unsigned: | |
14086 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
14087 | if (cu->language == language_fortran |
14088 | && name | |
14089 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
14090 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
14091 | break; |
14092 | case DW_ATE_signed_char: | |
6e70227d | 14093 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14094 | || cu->language == language_pascal |
14095 | || cu->language == language_fortran) | |
6ccb9162 UW |
14096 | code = TYPE_CODE_CHAR; |
14097 | break; | |
14098 | case DW_ATE_unsigned_char: | |
868a0084 | 14099 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14100 | || cu->language == language_pascal |
14101 | || cu->language == language_fortran) | |
6ccb9162 UW |
14102 | code = TYPE_CODE_CHAR; |
14103 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14104 | break; | |
75079b2b TT |
14105 | case DW_ATE_UTF: |
14106 | /* We just treat this as an integer and then recognize the | |
14107 | type by name elsewhere. */ | |
14108 | break; | |
14109 | ||
6ccb9162 UW |
14110 | default: |
14111 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
14112 | dwarf_type_encoding_name (encoding)); | |
14113 | break; | |
c906108c | 14114 | } |
6ccb9162 | 14115 | |
0114d602 DJ |
14116 | type = init_type (code, size, type_flags, NULL, objfile); |
14117 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
14118 | TYPE_TARGET_TYPE (type) = target_type; |
14119 | ||
0114d602 | 14120 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 14121 | TYPE_NOSIGN (type) = 1; |
0114d602 | 14122 | |
f792889a | 14123 | return set_die_type (die, type, cu); |
c906108c SS |
14124 | } |
14125 | ||
a02abb62 JB |
14126 | /* Read the given DW_AT_subrange DIE. */ |
14127 | ||
f792889a | 14128 | static struct type * |
a02abb62 JB |
14129 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
14130 | { | |
4c9ad8c2 | 14131 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
14132 | struct type *range_type; |
14133 | struct attribute *attr; | |
4fae6e18 JK |
14134 | LONGEST low, high; |
14135 | int low_default_is_valid; | |
15d034d0 | 14136 | const char *name; |
43bbcdc2 | 14137 | LONGEST negative_mask; |
e77813c8 | 14138 | |
4c9ad8c2 TT |
14139 | orig_base_type = die_type (die, cu); |
14140 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
14141 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
14142 | creating the range type, but we use the result of check_typedef | |
14143 | when examining properties of the type. */ | |
14144 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 14145 | |
7e314c57 JK |
14146 | /* The die_type call above may have already set the type for this DIE. */ |
14147 | range_type = get_die_type (die, cu); | |
14148 | if (range_type) | |
14149 | return range_type; | |
14150 | ||
4fae6e18 JK |
14151 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
14152 | omitting DW_AT_lower_bound. */ | |
14153 | switch (cu->language) | |
6e70227d | 14154 | { |
4fae6e18 JK |
14155 | case language_c: |
14156 | case language_cplus: | |
14157 | low = 0; | |
14158 | low_default_is_valid = 1; | |
14159 | break; | |
14160 | case language_fortran: | |
14161 | low = 1; | |
14162 | low_default_is_valid = 1; | |
14163 | break; | |
14164 | case language_d: | |
14165 | case language_java: | |
14166 | case language_objc: | |
14167 | low = 0; | |
14168 | low_default_is_valid = (cu->header.version >= 4); | |
14169 | break; | |
14170 | case language_ada: | |
14171 | case language_m2: | |
14172 | case language_pascal: | |
a02abb62 | 14173 | low = 1; |
4fae6e18 JK |
14174 | low_default_is_valid = (cu->header.version >= 4); |
14175 | break; | |
14176 | default: | |
14177 | low = 0; | |
14178 | low_default_is_valid = 0; | |
14179 | break; | |
a02abb62 JB |
14180 | } |
14181 | ||
dd5e6932 DJ |
14182 | /* FIXME: For variable sized arrays either of these could be |
14183 | a variable rather than a constant value. We'll allow it, | |
14184 | but we don't know how to handle it. */ | |
e142c38c | 14185 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 14186 | if (attr) |
4fae6e18 JK |
14187 | low = dwarf2_get_attr_constant_value (attr, low); |
14188 | else if (!low_default_is_valid) | |
14189 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
14190 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14191 | die->offset.sect_off, objfile_name (cu->objfile)); |
a02abb62 | 14192 | |
e142c38c | 14193 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 14194 | if (attr) |
6e70227d | 14195 | { |
7771576e | 14196 | if (attr_form_is_block (attr) || attr_form_is_ref (attr)) |
a02abb62 JB |
14197 | { |
14198 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 14199 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
14200 | FIXME: GDB does not yet know how to handle dynamic |
14201 | arrays properly, treat them as arrays with unspecified | |
14202 | length for now. | |
14203 | ||
14204 | FIXME: jimb/2003-09-22: GDB does not really know | |
14205 | how to handle arrays of unspecified length | |
14206 | either; we just represent them as zero-length | |
14207 | arrays. Choose an appropriate upper bound given | |
14208 | the lower bound we've computed above. */ | |
14209 | high = low - 1; | |
14210 | } | |
14211 | else | |
14212 | high = dwarf2_get_attr_constant_value (attr, 1); | |
14213 | } | |
e77813c8 PM |
14214 | else |
14215 | { | |
14216 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
14217 | if (attr) | |
14218 | { | |
14219 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
14220 | high = low + count - 1; | |
14221 | } | |
c2ff108b JK |
14222 | else |
14223 | { | |
14224 | /* Unspecified array length. */ | |
14225 | high = low - 1; | |
14226 | } | |
e77813c8 PM |
14227 | } |
14228 | ||
14229 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
14230 | without specifying a base type. | |
14231 | In that case, the base type must be set to the type of | |
14232 | the lower bound, upper bound or count, in that order, if any of these | |
14233 | three attributes references an object that has a type. | |
14234 | If no base type is found, the Dwarf-2 specifications say that | |
14235 | a signed integer type of size equal to the size of an address should | |
14236 | be used. | |
14237 | For the following C code: `extern char gdb_int [];' | |
14238 | GCC produces an empty range DIE. | |
14239 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 14240 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
14241 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
14242 | { | |
14243 | struct objfile *objfile = cu->objfile; | |
14244 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
14245 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
14246 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
14247 | ||
14248 | /* Test "int", "long int", and "long long int" objfile types, | |
14249 | and select the first one having a size above or equal to the | |
14250 | architecture address size. */ | |
14251 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14252 | base_type = int_type; | |
14253 | else | |
14254 | { | |
14255 | int_type = objfile_type (objfile)->builtin_long; | |
14256 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14257 | base_type = int_type; | |
14258 | else | |
14259 | { | |
14260 | int_type = objfile_type (objfile)->builtin_long_long; | |
14261 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14262 | base_type = int_type; | |
14263 | } | |
14264 | } | |
14265 | } | |
a02abb62 | 14266 | |
6e70227d | 14267 | negative_mask = |
43bbcdc2 PH |
14268 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
14269 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
14270 | low |= negative_mask; | |
14271 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
14272 | high |= negative_mask; | |
14273 | ||
4c9ad8c2 | 14274 | range_type = create_range_type (NULL, orig_base_type, low, high); |
a02abb62 | 14275 | |
bbb0eef6 JK |
14276 | /* Mark arrays with dynamic length at least as an array of unspecified |
14277 | length. GDB could check the boundary but before it gets implemented at | |
14278 | least allow accessing the array elements. */ | |
d48323d8 | 14279 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
14280 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
14281 | ||
c2ff108b JK |
14282 | /* Ada expects an empty array on no boundary attributes. */ |
14283 | if (attr == NULL && cu->language != language_ada) | |
14284 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
14285 | ||
39cbfefa DJ |
14286 | name = dwarf2_name (die, cu); |
14287 | if (name) | |
14288 | TYPE_NAME (range_type) = name; | |
6e70227d | 14289 | |
e142c38c | 14290 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
14291 | if (attr) |
14292 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
14293 | ||
7e314c57 JK |
14294 | set_die_type (die, range_type, cu); |
14295 | ||
14296 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
14297 | set_descriptive_type (range_type, die, cu); |
14298 | ||
7e314c57 | 14299 | return range_type; |
a02abb62 | 14300 | } |
6e70227d | 14301 | |
f792889a | 14302 | static struct type * |
81a17f79 JB |
14303 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
14304 | { | |
14305 | struct type *type; | |
81a17f79 | 14306 | |
81a17f79 JB |
14307 | /* For now, we only support the C meaning of an unspecified type: void. */ |
14308 | ||
0114d602 DJ |
14309 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
14310 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 14311 | |
f792889a | 14312 | return set_die_type (die, type, cu); |
81a17f79 | 14313 | } |
a02abb62 | 14314 | |
639d11d3 DC |
14315 | /* Read a single die and all its descendents. Set the die's sibling |
14316 | field to NULL; set other fields in the die correctly, and set all | |
14317 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
14318 | location of the info_ptr after reading all of those dies. PARENT | |
14319 | is the parent of the die in question. */ | |
14320 | ||
14321 | static struct die_info * | |
dee91e82 | 14322 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
14323 | const gdb_byte *info_ptr, |
14324 | const gdb_byte **new_info_ptr, | |
dee91e82 | 14325 | struct die_info *parent) |
639d11d3 DC |
14326 | { |
14327 | struct die_info *die; | |
d521ce57 | 14328 | const gdb_byte *cur_ptr; |
639d11d3 DC |
14329 | int has_children; |
14330 | ||
bf6af496 | 14331 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
14332 | if (die == NULL) |
14333 | { | |
14334 | *new_info_ptr = cur_ptr; | |
14335 | return NULL; | |
14336 | } | |
93311388 | 14337 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
14338 | |
14339 | if (has_children) | |
bf6af496 | 14340 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
14341 | else |
14342 | { | |
14343 | die->child = NULL; | |
14344 | *new_info_ptr = cur_ptr; | |
14345 | } | |
14346 | ||
14347 | die->sibling = NULL; | |
14348 | die->parent = parent; | |
14349 | return die; | |
14350 | } | |
14351 | ||
14352 | /* Read a die, all of its descendents, and all of its siblings; set | |
14353 | all of the fields of all of the dies correctly. Arguments are as | |
14354 | in read_die_and_children. */ | |
14355 | ||
14356 | static struct die_info * | |
bf6af496 | 14357 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
14358 | const gdb_byte *info_ptr, |
14359 | const gdb_byte **new_info_ptr, | |
bf6af496 | 14360 | struct die_info *parent) |
639d11d3 DC |
14361 | { |
14362 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 14363 | const gdb_byte *cur_ptr; |
639d11d3 | 14364 | |
c906108c | 14365 | cur_ptr = info_ptr; |
639d11d3 DC |
14366 | first_die = last_sibling = NULL; |
14367 | ||
14368 | while (1) | |
c906108c | 14369 | { |
639d11d3 | 14370 | struct die_info *die |
dee91e82 | 14371 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 14372 | |
1d325ec1 | 14373 | if (die == NULL) |
c906108c | 14374 | { |
639d11d3 DC |
14375 | *new_info_ptr = cur_ptr; |
14376 | return first_die; | |
c906108c | 14377 | } |
1d325ec1 DJ |
14378 | |
14379 | if (!first_die) | |
14380 | first_die = die; | |
c906108c | 14381 | else |
1d325ec1 DJ |
14382 | last_sibling->sibling = die; |
14383 | ||
14384 | last_sibling = die; | |
c906108c | 14385 | } |
c906108c SS |
14386 | } |
14387 | ||
bf6af496 DE |
14388 | /* Read a die, all of its descendents, and all of its siblings; set |
14389 | all of the fields of all of the dies correctly. Arguments are as | |
14390 | in read_die_and_children. | |
14391 | This the main entry point for reading a DIE and all its children. */ | |
14392 | ||
14393 | static struct die_info * | |
14394 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
14395 | const gdb_byte *info_ptr, |
14396 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
14397 | struct die_info *parent) |
14398 | { | |
14399 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
14400 | new_info_ptr, parent); | |
14401 | ||
14402 | if (dwarf2_die_debug) | |
14403 | { | |
14404 | fprintf_unfiltered (gdb_stdlog, | |
14405 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 14406 | get_section_name (reader->die_section), |
bf6af496 DE |
14407 | (unsigned) (info_ptr - reader->die_section->buffer), |
14408 | bfd_get_filename (reader->abfd)); | |
14409 | dump_die (die, dwarf2_die_debug); | |
14410 | } | |
14411 | ||
14412 | return die; | |
14413 | } | |
14414 | ||
3019eac3 DE |
14415 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
14416 | attributes. | |
14417 | The caller is responsible for filling in the extra attributes | |
14418 | and updating (*DIEP)->num_attrs. | |
14419 | Set DIEP to point to a newly allocated die with its information, | |
14420 | except for its child, sibling, and parent fields. | |
14421 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 14422 | |
d521ce57 | 14423 | static const gdb_byte * |
3019eac3 | 14424 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 14425 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 14426 | int *has_children, int num_extra_attrs) |
93311388 | 14427 | { |
b64f50a1 JK |
14428 | unsigned int abbrev_number, bytes_read, i; |
14429 | sect_offset offset; | |
93311388 DE |
14430 | struct abbrev_info *abbrev; |
14431 | struct die_info *die; | |
14432 | struct dwarf2_cu *cu = reader->cu; | |
14433 | bfd *abfd = reader->abfd; | |
14434 | ||
b64f50a1 | 14435 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
14436 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
14437 | info_ptr += bytes_read; | |
14438 | if (!abbrev_number) | |
14439 | { | |
14440 | *diep = NULL; | |
14441 | *has_children = 0; | |
14442 | return info_ptr; | |
14443 | } | |
14444 | ||
433df2d4 | 14445 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 14446 | if (!abbrev) |
348e048f DE |
14447 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
14448 | abbrev_number, | |
14449 | bfd_get_filename (abfd)); | |
14450 | ||
3019eac3 | 14451 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
14452 | die->offset = offset; |
14453 | die->tag = abbrev->tag; | |
14454 | die->abbrev = abbrev_number; | |
14455 | ||
3019eac3 DE |
14456 | /* Make the result usable. |
14457 | The caller needs to update num_attrs after adding the extra | |
14458 | attributes. */ | |
93311388 DE |
14459 | die->num_attrs = abbrev->num_attrs; |
14460 | ||
14461 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
14462 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
14463 | info_ptr); | |
93311388 DE |
14464 | |
14465 | *diep = die; | |
14466 | *has_children = abbrev->has_children; | |
14467 | return info_ptr; | |
14468 | } | |
14469 | ||
3019eac3 DE |
14470 | /* Read a die and all its attributes. |
14471 | Set DIEP to point to a newly allocated die with its information, | |
14472 | except for its child, sibling, and parent fields. | |
14473 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
14474 | ||
d521ce57 | 14475 | static const gdb_byte * |
3019eac3 | 14476 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 14477 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
14478 | int *has_children) |
14479 | { | |
d521ce57 | 14480 | const gdb_byte *result; |
bf6af496 DE |
14481 | |
14482 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
14483 | ||
14484 | if (dwarf2_die_debug) | |
14485 | { | |
14486 | fprintf_unfiltered (gdb_stdlog, | |
14487 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 14488 | get_section_name (reader->die_section), |
bf6af496 DE |
14489 | (unsigned) (info_ptr - reader->die_section->buffer), |
14490 | bfd_get_filename (reader->abfd)); | |
14491 | dump_die (*diep, dwarf2_die_debug); | |
14492 | } | |
14493 | ||
14494 | return result; | |
3019eac3 | 14495 | } |
433df2d4 DE |
14496 | \f |
14497 | /* Abbreviation tables. | |
3019eac3 | 14498 | |
433df2d4 | 14499 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
14500 | stored in a separate .debug_abbrev section. Before we read any |
14501 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
14502 | in a hash table. */ |
14503 | ||
14504 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
14505 | ||
14506 | static struct abbrev_info * | |
14507 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
14508 | { | |
14509 | struct abbrev_info *abbrev; | |
14510 | ||
14511 | abbrev = (struct abbrev_info *) | |
14512 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
14513 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
14514 | return abbrev; | |
14515 | } | |
14516 | ||
14517 | /* Add an abbreviation to the table. */ | |
c906108c SS |
14518 | |
14519 | static void | |
433df2d4 DE |
14520 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
14521 | unsigned int abbrev_number, | |
14522 | struct abbrev_info *abbrev) | |
14523 | { | |
14524 | unsigned int hash_number; | |
14525 | ||
14526 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
14527 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
14528 | abbrev_table->abbrevs[hash_number] = abbrev; | |
14529 | } | |
dee91e82 | 14530 | |
433df2d4 DE |
14531 | /* Look up an abbrev in the table. |
14532 | Returns NULL if the abbrev is not found. */ | |
14533 | ||
14534 | static struct abbrev_info * | |
14535 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
14536 | unsigned int abbrev_number) | |
c906108c | 14537 | { |
433df2d4 DE |
14538 | unsigned int hash_number; |
14539 | struct abbrev_info *abbrev; | |
14540 | ||
14541 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
14542 | abbrev = abbrev_table->abbrevs[hash_number]; | |
14543 | ||
14544 | while (abbrev) | |
14545 | { | |
14546 | if (abbrev->number == abbrev_number) | |
14547 | return abbrev; | |
14548 | abbrev = abbrev->next; | |
14549 | } | |
14550 | return NULL; | |
14551 | } | |
14552 | ||
14553 | /* Read in an abbrev table. */ | |
14554 | ||
14555 | static struct abbrev_table * | |
14556 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
14557 | sect_offset offset) | |
14558 | { | |
14559 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 14560 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 14561 | struct abbrev_table *abbrev_table; |
d521ce57 | 14562 | const gdb_byte *abbrev_ptr; |
c906108c SS |
14563 | struct abbrev_info *cur_abbrev; |
14564 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 14565 | unsigned int abbrev_form; |
f3dd6933 DJ |
14566 | struct attr_abbrev *cur_attrs; |
14567 | unsigned int allocated_attrs; | |
c906108c | 14568 | |
433df2d4 | 14569 | abbrev_table = XMALLOC (struct abbrev_table); |
f4dc4d17 | 14570 | abbrev_table->offset = offset; |
433df2d4 DE |
14571 | obstack_init (&abbrev_table->abbrev_obstack); |
14572 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
14573 | (ABBREV_HASH_SIZE | |
14574 | * sizeof (struct abbrev_info *))); | |
14575 | memset (abbrev_table->abbrevs, 0, | |
14576 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 14577 | |
433df2d4 DE |
14578 | dwarf2_read_section (objfile, section); |
14579 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
14580 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
14581 | abbrev_ptr += bytes_read; | |
14582 | ||
f3dd6933 DJ |
14583 | allocated_attrs = ATTR_ALLOC_CHUNK; |
14584 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 14585 | |
0963b4bd | 14586 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
14587 | while (abbrev_number) |
14588 | { | |
433df2d4 | 14589 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
14590 | |
14591 | /* read in abbrev header */ | |
14592 | cur_abbrev->number = abbrev_number; | |
14593 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14594 | abbrev_ptr += bytes_read; | |
14595 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
14596 | abbrev_ptr += 1; | |
14597 | ||
14598 | /* now read in declarations */ | |
14599 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14600 | abbrev_ptr += bytes_read; | |
14601 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14602 | abbrev_ptr += bytes_read; | |
14603 | while (abbrev_name) | |
14604 | { | |
f3dd6933 | 14605 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 14606 | { |
f3dd6933 DJ |
14607 | allocated_attrs += ATTR_ALLOC_CHUNK; |
14608 | cur_attrs | |
14609 | = xrealloc (cur_attrs, (allocated_attrs | |
14610 | * sizeof (struct attr_abbrev))); | |
c906108c | 14611 | } |
ae038cb0 | 14612 | |
f3dd6933 DJ |
14613 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
14614 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
14615 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
14616 | abbrev_ptr += bytes_read; | |
14617 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14618 | abbrev_ptr += bytes_read; | |
14619 | } | |
14620 | ||
433df2d4 | 14621 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
14622 | (cur_abbrev->num_attrs |
14623 | * sizeof (struct attr_abbrev))); | |
14624 | memcpy (cur_abbrev->attrs, cur_attrs, | |
14625 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
14626 | ||
433df2d4 | 14627 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
14628 | |
14629 | /* Get next abbreviation. | |
14630 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
14631 | always properly terminated with an abbrev number of 0. |
14632 | Exit loop if we encounter an abbreviation which we have | |
14633 | already read (which means we are about to read the abbreviations | |
14634 | for the next compile unit) or if the end of the abbreviation | |
14635 | table is reached. */ | |
433df2d4 | 14636 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
14637 | break; |
14638 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14639 | abbrev_ptr += bytes_read; | |
433df2d4 | 14640 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
14641 | break; |
14642 | } | |
f3dd6933 DJ |
14643 | |
14644 | xfree (cur_attrs); | |
433df2d4 | 14645 | return abbrev_table; |
c906108c SS |
14646 | } |
14647 | ||
433df2d4 | 14648 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 14649 | |
c906108c | 14650 | static void |
433df2d4 | 14651 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 14652 | { |
433df2d4 DE |
14653 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
14654 | xfree (abbrev_table); | |
c906108c SS |
14655 | } |
14656 | ||
f4dc4d17 DE |
14657 | /* Same as abbrev_table_free but as a cleanup. |
14658 | We pass in a pointer to the pointer to the table so that we can | |
14659 | set the pointer to NULL when we're done. It also simplifies | |
14660 | build_type_unit_groups. */ | |
14661 | ||
14662 | static void | |
14663 | abbrev_table_free_cleanup (void *table_ptr) | |
14664 | { | |
14665 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
14666 | ||
14667 | if (*abbrev_table_ptr != NULL) | |
14668 | abbrev_table_free (*abbrev_table_ptr); | |
14669 | *abbrev_table_ptr = NULL; | |
14670 | } | |
14671 | ||
433df2d4 DE |
14672 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
14673 | ||
14674 | static void | |
14675 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
14676 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 14677 | { |
433df2d4 DE |
14678 | cu->abbrev_table = |
14679 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
14680 | } | |
c906108c | 14681 | |
433df2d4 | 14682 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 14683 | |
433df2d4 DE |
14684 | static void |
14685 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
14686 | { | |
14687 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 14688 | |
a2ce51a0 DE |
14689 | if (cu->abbrev_table != NULL) |
14690 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
14691 | /* Set this to NULL so that we SEGV if we try to read it later, |
14692 | and also because free_comp_unit verifies this is NULL. */ | |
14693 | cu->abbrev_table = NULL; | |
14694 | } | |
14695 | \f | |
72bf9492 DJ |
14696 | /* Returns nonzero if TAG represents a type that we might generate a partial |
14697 | symbol for. */ | |
14698 | ||
14699 | static int | |
14700 | is_type_tag_for_partial (int tag) | |
14701 | { | |
14702 | switch (tag) | |
14703 | { | |
14704 | #if 0 | |
14705 | /* Some types that would be reasonable to generate partial symbols for, | |
14706 | that we don't at present. */ | |
14707 | case DW_TAG_array_type: | |
14708 | case DW_TAG_file_type: | |
14709 | case DW_TAG_ptr_to_member_type: | |
14710 | case DW_TAG_set_type: | |
14711 | case DW_TAG_string_type: | |
14712 | case DW_TAG_subroutine_type: | |
14713 | #endif | |
14714 | case DW_TAG_base_type: | |
14715 | case DW_TAG_class_type: | |
680b30c7 | 14716 | case DW_TAG_interface_type: |
72bf9492 DJ |
14717 | case DW_TAG_enumeration_type: |
14718 | case DW_TAG_structure_type: | |
14719 | case DW_TAG_subrange_type: | |
14720 | case DW_TAG_typedef: | |
14721 | case DW_TAG_union_type: | |
14722 | return 1; | |
14723 | default: | |
14724 | return 0; | |
14725 | } | |
14726 | } | |
14727 | ||
14728 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
14729 | ||
14730 | static struct partial_die_info * | |
dee91e82 | 14731 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 14732 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 14733 | { |
dee91e82 | 14734 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 14735 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
14736 | struct partial_die_info *part_die; |
14737 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
14738 | struct abbrev_info *abbrev; | |
14739 | unsigned int bytes_read; | |
5afb4e99 | 14740 | unsigned int load_all = 0; |
72bf9492 DJ |
14741 | int nesting_level = 1; |
14742 | ||
14743 | parent_die = NULL; | |
14744 | last_die = NULL; | |
14745 | ||
7adf1e79 DE |
14746 | gdb_assert (cu->per_cu != NULL); |
14747 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
14748 | load_all = 1; |
14749 | ||
72bf9492 DJ |
14750 | cu->partial_dies |
14751 | = htab_create_alloc_ex (cu->header.length / 12, | |
14752 | partial_die_hash, | |
14753 | partial_die_eq, | |
14754 | NULL, | |
14755 | &cu->comp_unit_obstack, | |
14756 | hashtab_obstack_allocate, | |
14757 | dummy_obstack_deallocate); | |
14758 | ||
14759 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
14760 | sizeof (struct partial_die_info)); | |
14761 | ||
14762 | while (1) | |
14763 | { | |
14764 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
14765 | ||
14766 | /* A NULL abbrev means the end of a series of children. */ | |
14767 | if (abbrev == NULL) | |
14768 | { | |
14769 | if (--nesting_level == 0) | |
14770 | { | |
14771 | /* PART_DIE was probably the last thing allocated on the | |
14772 | comp_unit_obstack, so we could call obstack_free | |
14773 | here. We don't do that because the waste is small, | |
14774 | and will be cleaned up when we're done with this | |
14775 | compilation unit. This way, we're also more robust | |
14776 | against other users of the comp_unit_obstack. */ | |
14777 | return first_die; | |
14778 | } | |
14779 | info_ptr += bytes_read; | |
14780 | last_die = parent_die; | |
14781 | parent_die = parent_die->die_parent; | |
14782 | continue; | |
14783 | } | |
14784 | ||
98bfdba5 PA |
14785 | /* Check for template arguments. We never save these; if |
14786 | they're seen, we just mark the parent, and go on our way. */ | |
14787 | if (parent_die != NULL | |
14788 | && cu->language == language_cplus | |
14789 | && (abbrev->tag == DW_TAG_template_type_param | |
14790 | || abbrev->tag == DW_TAG_template_value_param)) | |
14791 | { | |
14792 | parent_die->has_template_arguments = 1; | |
14793 | ||
14794 | if (!load_all) | |
14795 | { | |
14796 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 14797 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
14798 | continue; |
14799 | } | |
14800 | } | |
14801 | ||
0d99eb77 | 14802 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
14803 | Skip their other children. */ |
14804 | if (!load_all | |
14805 | && cu->language == language_cplus | |
14806 | && parent_die != NULL | |
14807 | && parent_die->tag == DW_TAG_subprogram) | |
14808 | { | |
dee91e82 | 14809 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
14810 | continue; |
14811 | } | |
14812 | ||
5afb4e99 DJ |
14813 | /* Check whether this DIE is interesting enough to save. Normally |
14814 | we would not be interested in members here, but there may be | |
14815 | later variables referencing them via DW_AT_specification (for | |
14816 | static members). */ | |
14817 | if (!load_all | |
14818 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 14819 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
14820 | && abbrev->tag != DW_TAG_enumerator |
14821 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 14822 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 14823 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 14824 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 14825 | && abbrev->tag != DW_TAG_module |
95554aad TT |
14826 | && abbrev->tag != DW_TAG_member |
14827 | && abbrev->tag != DW_TAG_imported_unit) | |
72bf9492 DJ |
14828 | { |
14829 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 14830 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
14831 | continue; |
14832 | } | |
14833 | ||
dee91e82 DE |
14834 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
14835 | info_ptr); | |
72bf9492 DJ |
14836 | |
14837 | /* This two-pass algorithm for processing partial symbols has a | |
14838 | high cost in cache pressure. Thus, handle some simple cases | |
14839 | here which cover the majority of C partial symbols. DIEs | |
14840 | which neither have specification tags in them, nor could have | |
14841 | specification tags elsewhere pointing at them, can simply be | |
14842 | processed and discarded. | |
14843 | ||
14844 | This segment is also optional; scan_partial_symbols and | |
14845 | add_partial_symbol will handle these DIEs if we chain | |
14846 | them in normally. When compilers which do not emit large | |
14847 | quantities of duplicate debug information are more common, | |
14848 | this code can probably be removed. */ | |
14849 | ||
14850 | /* Any complete simple types at the top level (pretty much all | |
14851 | of them, for a language without namespaces), can be processed | |
14852 | directly. */ | |
14853 | if (parent_die == NULL | |
14854 | && part_die->has_specification == 0 | |
14855 | && part_die->is_declaration == 0 | |
d8228535 | 14856 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
14857 | || part_die->tag == DW_TAG_base_type |
14858 | || part_die->tag == DW_TAG_subrange_type)) | |
14859 | { | |
14860 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 14861 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 14862 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
14863 | &objfile->static_psymbols, |
14864 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 14865 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
14866 | continue; |
14867 | } | |
14868 | ||
d8228535 JK |
14869 | /* The exception for DW_TAG_typedef with has_children above is |
14870 | a workaround of GCC PR debug/47510. In the case of this complaint | |
14871 | type_name_no_tag_or_error will error on such types later. | |
14872 | ||
14873 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
14874 | it could not find the child DIEs referenced later, this is checked | |
14875 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
14876 | ||
14877 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
14878 | complaint (&symfile_complaints, | |
14879 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
14880 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14881 | part_die->offset.sect_off, objfile_name (objfile)); |
d8228535 | 14882 | |
72bf9492 DJ |
14883 | /* If we're at the second level, and we're an enumerator, and |
14884 | our parent has no specification (meaning possibly lives in a | |
14885 | namespace elsewhere), then we can add the partial symbol now | |
14886 | instead of queueing it. */ | |
14887 | if (part_die->tag == DW_TAG_enumerator | |
14888 | && parent_die != NULL | |
14889 | && parent_die->die_parent == NULL | |
14890 | && parent_die->tag == DW_TAG_enumeration_type | |
14891 | && parent_die->has_specification == 0) | |
14892 | { | |
14893 | if (part_die->name == NULL) | |
3e43a32a MS |
14894 | complaint (&symfile_complaints, |
14895 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 14896 | else if (building_psymtab) |
04a679b8 | 14897 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 14898 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
14899 | (cu->language == language_cplus |
14900 | || cu->language == language_java) | |
bb5ed363 DE |
14901 | ? &objfile->global_psymbols |
14902 | : &objfile->static_psymbols, | |
14903 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 14904 | |
dee91e82 | 14905 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
14906 | continue; |
14907 | } | |
14908 | ||
14909 | /* We'll save this DIE so link it in. */ | |
14910 | part_die->die_parent = parent_die; | |
14911 | part_die->die_sibling = NULL; | |
14912 | part_die->die_child = NULL; | |
14913 | ||
14914 | if (last_die && last_die == parent_die) | |
14915 | last_die->die_child = part_die; | |
14916 | else if (last_die) | |
14917 | last_die->die_sibling = part_die; | |
14918 | ||
14919 | last_die = part_die; | |
14920 | ||
14921 | if (first_die == NULL) | |
14922 | first_die = part_die; | |
14923 | ||
14924 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
14925 | find interesting need to be in the hash table, because we | |
14926 | also have the parent/sibling/child chains; only those that we | |
14927 | might refer to by offset later during partial symbol reading. | |
14928 | ||
14929 | For now this means things that might have be the target of a | |
14930 | DW_AT_specification, DW_AT_abstract_origin, or | |
14931 | DW_AT_extension. DW_AT_extension will refer only to | |
14932 | namespaces; DW_AT_abstract_origin refers to functions (and | |
14933 | many things under the function DIE, but we do not recurse | |
14934 | into function DIEs during partial symbol reading) and | |
14935 | possibly variables as well; DW_AT_specification refers to | |
14936 | declarations. Declarations ought to have the DW_AT_declaration | |
14937 | flag. It happens that GCC forgets to put it in sometimes, but | |
14938 | only for functions, not for types. | |
14939 | ||
14940 | Adding more things than necessary to the hash table is harmless | |
14941 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
14942 | wasted time in find_partial_die, when we reread the compilation |
14943 | unit with load_all_dies set. */ | |
72bf9492 | 14944 | |
5afb4e99 | 14945 | if (load_all |
72929c62 | 14946 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 14947 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
14948 | || abbrev->tag == DW_TAG_variable |
14949 | || abbrev->tag == DW_TAG_namespace | |
14950 | || part_die->is_declaration) | |
14951 | { | |
14952 | void **slot; | |
14953 | ||
14954 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 14955 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
14956 | *slot = part_die; |
14957 | } | |
14958 | ||
14959 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
14960 | sizeof (struct partial_die_info)); | |
14961 | ||
14962 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 14963 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
14964 | languages we have to, so that we can get at method physnames |
14965 | to infer fully qualified class names, for DW_AT_specification, | |
14966 | and for C++ template arguments. For C++, we also look one level | |
14967 | inside functions to find template arguments (if the name of the | |
14968 | function does not already contain the template arguments). | |
bc30ff58 JB |
14969 | |
14970 | For Ada, we need to scan the children of subprograms and lexical | |
14971 | blocks as well because Ada allows the definition of nested | |
14972 | entities that could be interesting for the debugger, such as | |
14973 | nested subprograms for instance. */ | |
72bf9492 | 14974 | if (last_die->has_children |
5afb4e99 DJ |
14975 | && (load_all |
14976 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 14977 | || last_die->tag == DW_TAG_module |
72bf9492 | 14978 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
14979 | || (cu->language == language_cplus |
14980 | && last_die->tag == DW_TAG_subprogram | |
14981 | && (last_die->name == NULL | |
14982 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
14983 | || (cu->language != language_c |
14984 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 14985 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 14986 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
14987 | || last_die->tag == DW_TAG_union_type)) |
14988 | || (cu->language == language_ada | |
14989 | && (last_die->tag == DW_TAG_subprogram | |
14990 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
14991 | { |
14992 | nesting_level++; | |
14993 | parent_die = last_die; | |
14994 | continue; | |
14995 | } | |
14996 | ||
14997 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 14998 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
14999 | |
15000 | /* Back to the top, do it again. */ | |
15001 | } | |
15002 | } | |
15003 | ||
c906108c SS |
15004 | /* Read a minimal amount of information into the minimal die structure. */ |
15005 | ||
d521ce57 | 15006 | static const gdb_byte * |
dee91e82 DE |
15007 | read_partial_die (const struct die_reader_specs *reader, |
15008 | struct partial_die_info *part_die, | |
15009 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 15010 | const gdb_byte *info_ptr) |
c906108c | 15011 | { |
dee91e82 | 15012 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15013 | struct objfile *objfile = cu->objfile; |
d521ce57 | 15014 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 15015 | unsigned int i; |
c906108c | 15016 | struct attribute attr; |
c5aa993b | 15017 | int has_low_pc_attr = 0; |
c906108c | 15018 | int has_high_pc_attr = 0; |
91da1414 | 15019 | int high_pc_relative = 0; |
c906108c | 15020 | |
72bf9492 | 15021 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 15022 | |
b64f50a1 | 15023 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
15024 | |
15025 | info_ptr += abbrev_len; | |
15026 | ||
15027 | if (abbrev == NULL) | |
15028 | return info_ptr; | |
15029 | ||
c906108c SS |
15030 | part_die->tag = abbrev->tag; |
15031 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
15032 | |
15033 | for (i = 0; i < abbrev->num_attrs; ++i) | |
15034 | { | |
dee91e82 | 15035 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
15036 | |
15037 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 15038 | partial symbol table. */ |
c906108c SS |
15039 | switch (attr.name) |
15040 | { | |
15041 | case DW_AT_name: | |
71c25dea TT |
15042 | switch (part_die->tag) |
15043 | { | |
15044 | case DW_TAG_compile_unit: | |
95554aad | 15045 | case DW_TAG_partial_unit: |
348e048f | 15046 | case DW_TAG_type_unit: |
71c25dea TT |
15047 | /* Compilation units have a DW_AT_name that is a filename, not |
15048 | a source language identifier. */ | |
15049 | case DW_TAG_enumeration_type: | |
15050 | case DW_TAG_enumerator: | |
15051 | /* These tags always have simple identifiers already; no need | |
15052 | to canonicalize them. */ | |
15053 | part_die->name = DW_STRING (&attr); | |
15054 | break; | |
15055 | default: | |
15056 | part_die->name | |
15057 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 15058 | &objfile->objfile_obstack); |
71c25dea TT |
15059 | break; |
15060 | } | |
c906108c | 15061 | break; |
31ef98ae | 15062 | case DW_AT_linkage_name: |
c906108c | 15063 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
15064 | /* Note that both forms of linkage name might appear. We |
15065 | assume they will be the same, and we only store the last | |
15066 | one we see. */ | |
94af9270 KS |
15067 | if (cu->language == language_ada) |
15068 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 15069 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
15070 | break; |
15071 | case DW_AT_low_pc: | |
15072 | has_low_pc_attr = 1; | |
15073 | part_die->lowpc = DW_ADDR (&attr); | |
15074 | break; | |
15075 | case DW_AT_high_pc: | |
15076 | has_high_pc_attr = 1; | |
3019eac3 DE |
15077 | if (attr.form == DW_FORM_addr |
15078 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
15079 | part_die->highpc = DW_ADDR (&attr); |
15080 | else | |
15081 | { | |
15082 | high_pc_relative = 1; | |
15083 | part_die->highpc = DW_UNSND (&attr); | |
15084 | } | |
c906108c SS |
15085 | break; |
15086 | case DW_AT_location: | |
0963b4bd | 15087 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
15088 | if (attr_form_is_block (&attr)) |
15089 | { | |
95554aad | 15090 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 15091 | } |
3690dd37 | 15092 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 15093 | { |
4d3c2250 | 15094 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15095 | } |
15096 | else | |
15097 | { | |
4d3c2250 KB |
15098 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
15099 | "partial symbol information"); | |
8e19ed76 | 15100 | } |
c906108c | 15101 | break; |
c906108c SS |
15102 | case DW_AT_external: |
15103 | part_die->is_external = DW_UNSND (&attr); | |
15104 | break; | |
15105 | case DW_AT_declaration: | |
15106 | part_die->is_declaration = DW_UNSND (&attr); | |
15107 | break; | |
15108 | case DW_AT_type: | |
15109 | part_die->has_type = 1; | |
15110 | break; | |
15111 | case DW_AT_abstract_origin: | |
15112 | case DW_AT_specification: | |
72bf9492 DJ |
15113 | case DW_AT_extension: |
15114 | part_die->has_specification = 1; | |
c764a876 | 15115 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
15116 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
15117 | || cu->per_cu->is_dwz); | |
c906108c SS |
15118 | break; |
15119 | case DW_AT_sibling: | |
15120 | /* Ignore absolute siblings, they might point outside of | |
15121 | the current compile unit. */ | |
15122 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
15123 | complaint (&symfile_complaints, |
15124 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 15125 | else |
b64f50a1 | 15126 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 15127 | break; |
fa4028e9 JB |
15128 | case DW_AT_byte_size: |
15129 | part_die->has_byte_size = 1; | |
15130 | break; | |
68511cec CES |
15131 | case DW_AT_calling_convention: |
15132 | /* DWARF doesn't provide a way to identify a program's source-level | |
15133 | entry point. DW_AT_calling_convention attributes are only meant | |
15134 | to describe functions' calling conventions. | |
15135 | ||
15136 | However, because it's a necessary piece of information in | |
15137 | Fortran, and because DW_CC_program is the only piece of debugging | |
15138 | information whose definition refers to a 'main program' at all, | |
15139 | several compilers have begun marking Fortran main programs with | |
15140 | DW_CC_program --- even when those functions use the standard | |
15141 | calling conventions. | |
15142 | ||
15143 | So until DWARF specifies a way to provide this information and | |
15144 | compilers pick up the new representation, we'll support this | |
15145 | practice. */ | |
15146 | if (DW_UNSND (&attr) == DW_CC_program | |
15147 | && cu->language == language_fortran) | |
01f8c46d JK |
15148 | { |
15149 | set_main_name (part_die->name); | |
15150 | ||
15151 | /* As this DIE has a static linkage the name would be difficult | |
15152 | to look up later. */ | |
15153 | language_of_main = language_fortran; | |
15154 | } | |
68511cec | 15155 | break; |
481860b3 GB |
15156 | case DW_AT_inline: |
15157 | if (DW_UNSND (&attr) == DW_INL_inlined | |
15158 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
15159 | part_die->may_be_inlined = 1; | |
15160 | break; | |
95554aad TT |
15161 | |
15162 | case DW_AT_import: | |
15163 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
15164 | { |
15165 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
15166 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
15167 | || cu->per_cu->is_dwz); | |
15168 | } | |
95554aad TT |
15169 | break; |
15170 | ||
c906108c SS |
15171 | default: |
15172 | break; | |
15173 | } | |
15174 | } | |
15175 | ||
91da1414 MW |
15176 | if (high_pc_relative) |
15177 | part_die->highpc += part_die->lowpc; | |
15178 | ||
9373cf26 JK |
15179 | if (has_low_pc_attr && has_high_pc_attr) |
15180 | { | |
15181 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
15182 | eliminate duplicate copies of functions and vtables and such. | |
15183 | The linker will arbitrarily choose one and discard the others. | |
15184 | The AT_*_pc values for such functions refer to local labels in | |
15185 | these sections. If the section from that file was discarded, the | |
15186 | labels are not in the output, so the relocs get a value of 0. | |
15187 | If this is a discarded function, mark the pc bounds as invalid, | |
15188 | so that GDB will ignore it. */ | |
15189 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
15190 | { | |
bb5ed363 | 15191 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15192 | |
15193 | complaint (&symfile_complaints, | |
15194 | _("DW_AT_low_pc %s is zero " | |
15195 | "for DIE at 0x%x [in module %s]"), | |
15196 | paddress (gdbarch, part_die->lowpc), | |
4262abfb | 15197 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15198 | } |
15199 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
15200 | else if (part_die->lowpc >= part_die->highpc) | |
15201 | { | |
bb5ed363 | 15202 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15203 | |
15204 | complaint (&symfile_complaints, | |
15205 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
15206 | "for DIE at 0x%x [in module %s]"), | |
15207 | paddress (gdbarch, part_die->lowpc), | |
15208 | paddress (gdbarch, part_die->highpc), | |
4262abfb | 15209 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15210 | } |
15211 | else | |
15212 | part_die->has_pc_info = 1; | |
15213 | } | |
85cbf3d3 | 15214 | |
c906108c SS |
15215 | return info_ptr; |
15216 | } | |
15217 | ||
72bf9492 DJ |
15218 | /* Find a cached partial DIE at OFFSET in CU. */ |
15219 | ||
15220 | static struct partial_die_info * | |
b64f50a1 | 15221 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
15222 | { |
15223 | struct partial_die_info *lookup_die = NULL; | |
15224 | struct partial_die_info part_die; | |
15225 | ||
15226 | part_die.offset = offset; | |
b64f50a1 JK |
15227 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
15228 | offset.sect_off); | |
72bf9492 | 15229 | |
72bf9492 DJ |
15230 | return lookup_die; |
15231 | } | |
15232 | ||
348e048f DE |
15233 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
15234 | except in the case of .debug_types DIEs which do not reference | |
15235 | outside their CU (they do however referencing other types via | |
55f1336d | 15236 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
15237 | |
15238 | static struct partial_die_info * | |
36586728 | 15239 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 15240 | { |
bb5ed363 | 15241 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
15242 | struct dwarf2_per_cu_data *per_cu = NULL; |
15243 | struct partial_die_info *pd = NULL; | |
72bf9492 | 15244 | |
36586728 TT |
15245 | if (offset_in_dwz == cu->per_cu->is_dwz |
15246 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
15247 | { |
15248 | pd = find_partial_die_in_comp_unit (offset, cu); | |
15249 | if (pd != NULL) | |
15250 | return pd; | |
0d99eb77 DE |
15251 | /* We missed recording what we needed. |
15252 | Load all dies and try again. */ | |
15253 | per_cu = cu->per_cu; | |
5afb4e99 | 15254 | } |
0d99eb77 DE |
15255 | else |
15256 | { | |
15257 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 15258 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
15259 | { |
15260 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
15261 | " external reference to offset 0x%lx [in module %s].\n"), | |
15262 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
15263 | bfd_get_filename (objfile->obfd)); | |
15264 | } | |
36586728 TT |
15265 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
15266 | objfile); | |
72bf9492 | 15267 | |
0d99eb77 DE |
15268 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
15269 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 15270 | |
0d99eb77 DE |
15271 | per_cu->cu->last_used = 0; |
15272 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
15273 | } | |
5afb4e99 | 15274 | |
dee91e82 DE |
15275 | /* If we didn't find it, and not all dies have been loaded, |
15276 | load them all and try again. */ | |
15277 | ||
5afb4e99 DJ |
15278 | if (pd == NULL && per_cu->load_all_dies == 0) |
15279 | { | |
5afb4e99 | 15280 | per_cu->load_all_dies = 1; |
fd820528 DE |
15281 | |
15282 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
15283 | THIS_CU->cu may already be in use. So we can't just free it and | |
15284 | replace its DIEs with the ones we read in. Instead, we leave those | |
15285 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
15286 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
15287 | set. */ | |
dee91e82 | 15288 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
15289 | |
15290 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
15291 | } | |
15292 | ||
15293 | if (pd == NULL) | |
15294 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
15295 | _("could not find partial DIE 0x%x " |
15296 | "in cache [from module %s]\n"), | |
b64f50a1 | 15297 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 15298 | return pd; |
72bf9492 DJ |
15299 | } |
15300 | ||
abc72ce4 DE |
15301 | /* See if we can figure out if the class lives in a namespace. We do |
15302 | this by looking for a member function; its demangled name will | |
15303 | contain namespace info, if there is any. */ | |
15304 | ||
15305 | static void | |
15306 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
15307 | struct dwarf2_cu *cu) | |
15308 | { | |
15309 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
15310 | what template types look like, because the demangler | |
15311 | frequently doesn't give the same name as the debug info. We | |
15312 | could fix this by only using the demangled name to get the | |
15313 | prefix (but see comment in read_structure_type). */ | |
15314 | ||
15315 | struct partial_die_info *real_pdi; | |
15316 | struct partial_die_info *child_pdi; | |
15317 | ||
15318 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
15319 | we should not do this. We'll prepend the parent's fully qualified | |
15320 | name when we create the partial symbol. */ | |
15321 | ||
15322 | real_pdi = struct_pdi; | |
15323 | while (real_pdi->has_specification) | |
36586728 TT |
15324 | real_pdi = find_partial_die (real_pdi->spec_offset, |
15325 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
15326 | |
15327 | if (real_pdi->die_parent != NULL) | |
15328 | return; | |
15329 | ||
15330 | for (child_pdi = struct_pdi->die_child; | |
15331 | child_pdi != NULL; | |
15332 | child_pdi = child_pdi->die_sibling) | |
15333 | { | |
15334 | if (child_pdi->tag == DW_TAG_subprogram | |
15335 | && child_pdi->linkage_name != NULL) | |
15336 | { | |
15337 | char *actual_class_name | |
15338 | = language_class_name_from_physname (cu->language_defn, | |
15339 | child_pdi->linkage_name); | |
15340 | if (actual_class_name != NULL) | |
15341 | { | |
15342 | struct_pdi->name | |
10f0c4bb TT |
15343 | = obstack_copy0 (&cu->objfile->objfile_obstack, |
15344 | actual_class_name, | |
15345 | strlen (actual_class_name)); | |
abc72ce4 DE |
15346 | xfree (actual_class_name); |
15347 | } | |
15348 | break; | |
15349 | } | |
15350 | } | |
15351 | } | |
15352 | ||
72bf9492 DJ |
15353 | /* Adjust PART_DIE before generating a symbol for it. This function |
15354 | may set the is_external flag or change the DIE's name. */ | |
15355 | ||
15356 | static void | |
15357 | fixup_partial_die (struct partial_die_info *part_die, | |
15358 | struct dwarf2_cu *cu) | |
15359 | { | |
abc72ce4 DE |
15360 | /* Once we've fixed up a die, there's no point in doing so again. |
15361 | This also avoids a memory leak if we were to call | |
15362 | guess_partial_die_structure_name multiple times. */ | |
15363 | if (part_die->fixup_called) | |
15364 | return; | |
15365 | ||
72bf9492 DJ |
15366 | /* If we found a reference attribute and the DIE has no name, try |
15367 | to find a name in the referred to DIE. */ | |
15368 | ||
15369 | if (part_die->name == NULL && part_die->has_specification) | |
15370 | { | |
15371 | struct partial_die_info *spec_die; | |
72bf9492 | 15372 | |
36586728 TT |
15373 | spec_die = find_partial_die (part_die->spec_offset, |
15374 | part_die->spec_is_dwz, cu); | |
72bf9492 | 15375 | |
10b3939b | 15376 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
15377 | |
15378 | if (spec_die->name) | |
15379 | { | |
15380 | part_die->name = spec_die->name; | |
15381 | ||
15382 | /* Copy DW_AT_external attribute if it is set. */ | |
15383 | if (spec_die->is_external) | |
15384 | part_die->is_external = spec_die->is_external; | |
15385 | } | |
15386 | } | |
15387 | ||
15388 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
15389 | |
15390 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 15391 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 15392 | |
abc72ce4 DE |
15393 | /* If there is no parent die to provide a namespace, and there are |
15394 | children, see if we can determine the namespace from their linkage | |
122d1940 | 15395 | name. */ |
abc72ce4 | 15396 | if (cu->language == language_cplus |
8b70b953 | 15397 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
15398 | && part_die->die_parent == NULL |
15399 | && part_die->has_children | |
15400 | && (part_die->tag == DW_TAG_class_type | |
15401 | || part_die->tag == DW_TAG_structure_type | |
15402 | || part_die->tag == DW_TAG_union_type)) | |
15403 | guess_partial_die_structure_name (part_die, cu); | |
15404 | ||
53832f31 TT |
15405 | /* GCC might emit a nameless struct or union that has a linkage |
15406 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
15407 | if (part_die->name == NULL | |
96408a79 SA |
15408 | && (part_die->tag == DW_TAG_class_type |
15409 | || part_die->tag == DW_TAG_interface_type | |
15410 | || part_die->tag == DW_TAG_structure_type | |
15411 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
15412 | && part_die->linkage_name != NULL) |
15413 | { | |
15414 | char *demangled; | |
15415 | ||
8de20a37 | 15416 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
15417 | if (demangled) |
15418 | { | |
96408a79 SA |
15419 | const char *base; |
15420 | ||
15421 | /* Strip any leading namespaces/classes, keep only the base name. | |
15422 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
15423 | base = strrchr (demangled, ':'); | |
15424 | if (base && base > demangled && base[-1] == ':') | |
15425 | base++; | |
15426 | else | |
15427 | base = demangled; | |
15428 | ||
10f0c4bb TT |
15429 | part_die->name = obstack_copy0 (&cu->objfile->objfile_obstack, |
15430 | base, strlen (base)); | |
53832f31 TT |
15431 | xfree (demangled); |
15432 | } | |
15433 | } | |
15434 | ||
abc72ce4 | 15435 | part_die->fixup_called = 1; |
72bf9492 DJ |
15436 | } |
15437 | ||
a8329558 | 15438 | /* Read an attribute value described by an attribute form. */ |
c906108c | 15439 | |
d521ce57 | 15440 | static const gdb_byte * |
dee91e82 DE |
15441 | read_attribute_value (const struct die_reader_specs *reader, |
15442 | struct attribute *attr, unsigned form, | |
d521ce57 | 15443 | const gdb_byte *info_ptr) |
c906108c | 15444 | { |
dee91e82 DE |
15445 | struct dwarf2_cu *cu = reader->cu; |
15446 | bfd *abfd = reader->abfd; | |
e7c27a73 | 15447 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
15448 | unsigned int bytes_read; |
15449 | struct dwarf_block *blk; | |
15450 | ||
a8329558 KW |
15451 | attr->form = form; |
15452 | switch (form) | |
c906108c | 15453 | { |
c906108c | 15454 | case DW_FORM_ref_addr: |
ae411497 | 15455 | if (cu->header.version == 2) |
4568ecf9 | 15456 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 15457 | else |
4568ecf9 DE |
15458 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
15459 | &cu->header, &bytes_read); | |
ae411497 TT |
15460 | info_ptr += bytes_read; |
15461 | break; | |
36586728 TT |
15462 | case DW_FORM_GNU_ref_alt: |
15463 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
15464 | info_ptr += bytes_read; | |
15465 | break; | |
ae411497 | 15466 | case DW_FORM_addr: |
e7c27a73 | 15467 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 15468 | info_ptr += bytes_read; |
c906108c SS |
15469 | break; |
15470 | case DW_FORM_block2: | |
7b5a2f43 | 15471 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15472 | blk->size = read_2_bytes (abfd, info_ptr); |
15473 | info_ptr += 2; | |
15474 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15475 | info_ptr += blk->size; | |
15476 | DW_BLOCK (attr) = blk; | |
15477 | break; | |
15478 | case DW_FORM_block4: | |
7b5a2f43 | 15479 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15480 | blk->size = read_4_bytes (abfd, info_ptr); |
15481 | info_ptr += 4; | |
15482 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15483 | info_ptr += blk->size; | |
15484 | DW_BLOCK (attr) = blk; | |
15485 | break; | |
15486 | case DW_FORM_data2: | |
15487 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
15488 | info_ptr += 2; | |
15489 | break; | |
15490 | case DW_FORM_data4: | |
15491 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
15492 | info_ptr += 4; | |
15493 | break; | |
15494 | case DW_FORM_data8: | |
15495 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
15496 | info_ptr += 8; | |
15497 | break; | |
2dc7f7b3 TT |
15498 | case DW_FORM_sec_offset: |
15499 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
15500 | info_ptr += bytes_read; | |
15501 | break; | |
c906108c | 15502 | case DW_FORM_string: |
9b1c24c8 | 15503 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 15504 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
15505 | info_ptr += bytes_read; |
15506 | break; | |
4bdf3d34 | 15507 | case DW_FORM_strp: |
36586728 TT |
15508 | if (!cu->per_cu->is_dwz) |
15509 | { | |
15510 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
15511 | &bytes_read); | |
15512 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15513 | info_ptr += bytes_read; | |
15514 | break; | |
15515 | } | |
15516 | /* FALLTHROUGH */ | |
15517 | case DW_FORM_GNU_strp_alt: | |
15518 | { | |
15519 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
15520 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
15521 | &bytes_read); | |
15522 | ||
15523 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
15524 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15525 | info_ptr += bytes_read; | |
15526 | } | |
4bdf3d34 | 15527 | break; |
2dc7f7b3 | 15528 | case DW_FORM_exprloc: |
c906108c | 15529 | case DW_FORM_block: |
7b5a2f43 | 15530 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15531 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15532 | info_ptr += bytes_read; | |
15533 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15534 | info_ptr += blk->size; | |
15535 | DW_BLOCK (attr) = blk; | |
15536 | break; | |
15537 | case DW_FORM_block1: | |
7b5a2f43 | 15538 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15539 | blk->size = read_1_byte (abfd, info_ptr); |
15540 | info_ptr += 1; | |
15541 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15542 | info_ptr += blk->size; | |
15543 | DW_BLOCK (attr) = blk; | |
15544 | break; | |
15545 | case DW_FORM_data1: | |
15546 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
15547 | info_ptr += 1; | |
15548 | break; | |
15549 | case DW_FORM_flag: | |
15550 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
15551 | info_ptr += 1; | |
15552 | break; | |
2dc7f7b3 TT |
15553 | case DW_FORM_flag_present: |
15554 | DW_UNSND (attr) = 1; | |
15555 | break; | |
c906108c SS |
15556 | case DW_FORM_sdata: |
15557 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
15558 | info_ptr += bytes_read; | |
15559 | break; | |
15560 | case DW_FORM_udata: | |
15561 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
15562 | info_ptr += bytes_read; | |
15563 | break; | |
15564 | case DW_FORM_ref1: | |
4568ecf9 DE |
15565 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15566 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
15567 | info_ptr += 1; |
15568 | break; | |
15569 | case DW_FORM_ref2: | |
4568ecf9 DE |
15570 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15571 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
15572 | info_ptr += 2; |
15573 | break; | |
15574 | case DW_FORM_ref4: | |
4568ecf9 DE |
15575 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15576 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
15577 | info_ptr += 4; |
15578 | break; | |
613e1657 | 15579 | case DW_FORM_ref8: |
4568ecf9 DE |
15580 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15581 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
15582 | info_ptr += 8; |
15583 | break; | |
55f1336d | 15584 | case DW_FORM_ref_sig8: |
ac9ec31b | 15585 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
15586 | info_ptr += 8; |
15587 | break; | |
c906108c | 15588 | case DW_FORM_ref_udata: |
4568ecf9 DE |
15589 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15590 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
15591 | info_ptr += bytes_read; |
15592 | break; | |
c906108c | 15593 | case DW_FORM_indirect: |
a8329558 KW |
15594 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15595 | info_ptr += bytes_read; | |
dee91e82 | 15596 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 15597 | break; |
3019eac3 DE |
15598 | case DW_FORM_GNU_addr_index: |
15599 | if (reader->dwo_file == NULL) | |
15600 | { | |
15601 | /* For now flag a hard error. | |
15602 | Later we can turn this into a complaint. */ | |
15603 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
15604 | dwarf_form_name (form), | |
15605 | bfd_get_filename (abfd)); | |
15606 | } | |
15607 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
15608 | info_ptr += bytes_read; | |
15609 | break; | |
15610 | case DW_FORM_GNU_str_index: | |
15611 | if (reader->dwo_file == NULL) | |
15612 | { | |
15613 | /* For now flag a hard error. | |
15614 | Later we can turn this into a complaint if warranted. */ | |
15615 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
15616 | dwarf_form_name (form), | |
15617 | bfd_get_filename (abfd)); | |
15618 | } | |
15619 | { | |
15620 | ULONGEST str_index = | |
15621 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
15622 | ||
15623 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
15624 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15625 | info_ptr += bytes_read; | |
15626 | } | |
15627 | break; | |
c906108c | 15628 | default: |
8a3fe4f8 | 15629 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
15630 | dwarf_form_name (form), |
15631 | bfd_get_filename (abfd)); | |
c906108c | 15632 | } |
28e94949 | 15633 | |
36586728 | 15634 | /* Super hack. */ |
7771576e | 15635 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
15636 | attr->form = DW_FORM_GNU_ref_alt; |
15637 | ||
28e94949 JB |
15638 | /* We have seen instances where the compiler tried to emit a byte |
15639 | size attribute of -1 which ended up being encoded as an unsigned | |
15640 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
15641 | an object of this size seems pretty unlikely so we can relatively | |
15642 | safely treat these cases as if the size attribute was invalid and | |
15643 | treat them as zero by default. */ | |
15644 | if (attr->name == DW_AT_byte_size | |
15645 | && form == DW_FORM_data4 | |
15646 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
15647 | { |
15648 | complaint | |
15649 | (&symfile_complaints, | |
43bbcdc2 PH |
15650 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
15651 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
15652 | DW_UNSND (attr) = 0; |
15653 | } | |
28e94949 | 15654 | |
c906108c SS |
15655 | return info_ptr; |
15656 | } | |
15657 | ||
a8329558 KW |
15658 | /* Read an attribute described by an abbreviated attribute. */ |
15659 | ||
d521ce57 | 15660 | static const gdb_byte * |
dee91e82 DE |
15661 | read_attribute (const struct die_reader_specs *reader, |
15662 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 15663 | const gdb_byte *info_ptr) |
a8329558 KW |
15664 | { |
15665 | attr->name = abbrev->name; | |
dee91e82 | 15666 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
15667 | } |
15668 | ||
0963b4bd | 15669 | /* Read dwarf information from a buffer. */ |
c906108c SS |
15670 | |
15671 | static unsigned int | |
a1855c1d | 15672 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 15673 | { |
fe1b8b76 | 15674 | return bfd_get_8 (abfd, buf); |
c906108c SS |
15675 | } |
15676 | ||
15677 | static int | |
a1855c1d | 15678 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 15679 | { |
fe1b8b76 | 15680 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
15681 | } |
15682 | ||
15683 | static unsigned int | |
a1855c1d | 15684 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15685 | { |
fe1b8b76 | 15686 | return bfd_get_16 (abfd, buf); |
c906108c SS |
15687 | } |
15688 | ||
21ae7a4d | 15689 | static int |
a1855c1d | 15690 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
15691 | { |
15692 | return bfd_get_signed_16 (abfd, buf); | |
15693 | } | |
15694 | ||
c906108c | 15695 | static unsigned int |
a1855c1d | 15696 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15697 | { |
fe1b8b76 | 15698 | return bfd_get_32 (abfd, buf); |
c906108c SS |
15699 | } |
15700 | ||
21ae7a4d | 15701 | static int |
a1855c1d | 15702 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
15703 | { |
15704 | return bfd_get_signed_32 (abfd, buf); | |
15705 | } | |
15706 | ||
93311388 | 15707 | static ULONGEST |
a1855c1d | 15708 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15709 | { |
fe1b8b76 | 15710 | return bfd_get_64 (abfd, buf); |
c906108c SS |
15711 | } |
15712 | ||
15713 | static CORE_ADDR | |
d521ce57 | 15714 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 15715 | unsigned int *bytes_read) |
c906108c | 15716 | { |
e7c27a73 | 15717 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
15718 | CORE_ADDR retval = 0; |
15719 | ||
107d2387 | 15720 | if (cu_header->signed_addr_p) |
c906108c | 15721 | { |
107d2387 AC |
15722 | switch (cu_header->addr_size) |
15723 | { | |
15724 | case 2: | |
fe1b8b76 | 15725 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
15726 | break; |
15727 | case 4: | |
fe1b8b76 | 15728 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
15729 | break; |
15730 | case 8: | |
fe1b8b76 | 15731 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
15732 | break; |
15733 | default: | |
8e65ff28 | 15734 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 15735 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 15736 | bfd_get_filename (abfd)); |
107d2387 AC |
15737 | } |
15738 | } | |
15739 | else | |
15740 | { | |
15741 | switch (cu_header->addr_size) | |
15742 | { | |
15743 | case 2: | |
fe1b8b76 | 15744 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
15745 | break; |
15746 | case 4: | |
fe1b8b76 | 15747 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
15748 | break; |
15749 | case 8: | |
fe1b8b76 | 15750 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
15751 | break; |
15752 | default: | |
8e65ff28 | 15753 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
15754 | _("read_address: bad switch, " |
15755 | "unsigned [in module %s]"), | |
659b0389 | 15756 | bfd_get_filename (abfd)); |
107d2387 | 15757 | } |
c906108c | 15758 | } |
64367e0a | 15759 | |
107d2387 AC |
15760 | *bytes_read = cu_header->addr_size; |
15761 | return retval; | |
c906108c SS |
15762 | } |
15763 | ||
f7ef9339 | 15764 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
15765 | specification allows the initial length to take up either 4 bytes |
15766 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
15767 | bytes describe the length and all offsets will be 8 bytes in length | |
15768 | instead of 4. | |
15769 | ||
f7ef9339 KB |
15770 | An older, non-standard 64-bit format is also handled by this |
15771 | function. The older format in question stores the initial length | |
15772 | as an 8-byte quantity without an escape value. Lengths greater | |
15773 | than 2^32 aren't very common which means that the initial 4 bytes | |
15774 | is almost always zero. Since a length value of zero doesn't make | |
15775 | sense for the 32-bit format, this initial zero can be considered to | |
15776 | be an escape value which indicates the presence of the older 64-bit | |
15777 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
15778 | greater than 4GB. If it becomes necessary to handle lengths |
15779 | somewhat larger than 4GB, we could allow other small values (such | |
15780 | as the non-sensical values of 1, 2, and 3) to also be used as | |
15781 | escape values indicating the presence of the old format. | |
f7ef9339 | 15782 | |
917c78fc MK |
15783 | The value returned via bytes_read should be used to increment the |
15784 | relevant pointer after calling read_initial_length(). | |
c764a876 | 15785 | |
613e1657 KB |
15786 | [ Note: read_initial_length() and read_offset() are based on the |
15787 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 15788 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
15789 | from: |
15790 | ||
f7ef9339 | 15791 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 15792 | |
613e1657 KB |
15793 | This document is only a draft and is subject to change. (So beware.) |
15794 | ||
f7ef9339 | 15795 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
15796 | determined empirically by examining 64-bit ELF files produced by |
15797 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
15798 | |
15799 | - Kevin, July 16, 2002 | |
613e1657 KB |
15800 | ] */ |
15801 | ||
15802 | static LONGEST | |
d521ce57 | 15803 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 15804 | { |
fe1b8b76 | 15805 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 15806 | |
dd373385 | 15807 | if (length == 0xffffffff) |
613e1657 | 15808 | { |
fe1b8b76 | 15809 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 15810 | *bytes_read = 12; |
613e1657 | 15811 | } |
dd373385 | 15812 | else if (length == 0) |
f7ef9339 | 15813 | { |
dd373385 | 15814 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 15815 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 15816 | *bytes_read = 8; |
f7ef9339 | 15817 | } |
613e1657 KB |
15818 | else |
15819 | { | |
15820 | *bytes_read = 4; | |
613e1657 KB |
15821 | } |
15822 | ||
c764a876 DE |
15823 | return length; |
15824 | } | |
dd373385 | 15825 | |
c764a876 DE |
15826 | /* Cover function for read_initial_length. |
15827 | Returns the length of the object at BUF, and stores the size of the | |
15828 | initial length in *BYTES_READ and stores the size that offsets will be in | |
15829 | *OFFSET_SIZE. | |
15830 | If the initial length size is not equivalent to that specified in | |
15831 | CU_HEADER then issue a complaint. | |
15832 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 15833 | |
c764a876 | 15834 | static LONGEST |
d521ce57 | 15835 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
15836 | const struct comp_unit_head *cu_header, |
15837 | unsigned int *bytes_read, | |
15838 | unsigned int *offset_size) | |
15839 | { | |
15840 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
15841 | ||
15842 | gdb_assert (cu_header->initial_length_size == 4 | |
15843 | || cu_header->initial_length_size == 8 | |
15844 | || cu_header->initial_length_size == 12); | |
15845 | ||
15846 | if (cu_header->initial_length_size != *bytes_read) | |
15847 | complaint (&symfile_complaints, | |
15848 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 15849 | |
c764a876 | 15850 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 15851 | return length; |
613e1657 KB |
15852 | } |
15853 | ||
15854 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 15855 | given by cu_header->offset_size. */ |
613e1657 KB |
15856 | |
15857 | static LONGEST | |
d521ce57 TT |
15858 | read_offset (bfd *abfd, const gdb_byte *buf, |
15859 | const struct comp_unit_head *cu_header, | |
891d2f0b | 15860 | unsigned int *bytes_read) |
c764a876 DE |
15861 | { |
15862 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 15863 | |
c764a876 DE |
15864 | *bytes_read = cu_header->offset_size; |
15865 | return offset; | |
15866 | } | |
15867 | ||
15868 | /* Read an offset from the data stream. */ | |
15869 | ||
15870 | static LONGEST | |
d521ce57 | 15871 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
15872 | { |
15873 | LONGEST retval = 0; | |
15874 | ||
c764a876 | 15875 | switch (offset_size) |
613e1657 KB |
15876 | { |
15877 | case 4: | |
fe1b8b76 | 15878 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
15879 | break; |
15880 | case 8: | |
fe1b8b76 | 15881 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
15882 | break; |
15883 | default: | |
8e65ff28 | 15884 | internal_error (__FILE__, __LINE__, |
c764a876 | 15885 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 15886 | bfd_get_filename (abfd)); |
613e1657 KB |
15887 | } |
15888 | ||
917c78fc | 15889 | return retval; |
613e1657 KB |
15890 | } |
15891 | ||
d521ce57 TT |
15892 | static const gdb_byte * |
15893 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
15894 | { |
15895 | /* If the size of a host char is 8 bits, we can return a pointer | |
15896 | to the buffer, otherwise we have to copy the data to a buffer | |
15897 | allocated on the temporary obstack. */ | |
4bdf3d34 | 15898 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 15899 | return buf; |
c906108c SS |
15900 | } |
15901 | ||
d521ce57 TT |
15902 | static const char * |
15903 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
15904 | unsigned int *bytes_read_ptr) | |
c906108c SS |
15905 | { |
15906 | /* If the size of a host char is 8 bits, we can return a pointer | |
15907 | to the string, otherwise we have to copy the string to a buffer | |
15908 | allocated on the temporary obstack. */ | |
4bdf3d34 | 15909 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
15910 | if (*buf == '\0') |
15911 | { | |
15912 | *bytes_read_ptr = 1; | |
15913 | return NULL; | |
15914 | } | |
d521ce57 TT |
15915 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
15916 | return (const char *) buf; | |
4bdf3d34 JJ |
15917 | } |
15918 | ||
d521ce57 | 15919 | static const char * |
cf2c3c16 | 15920 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 15921 | { |
be391dca | 15922 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 15923 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
15924 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
15925 | bfd_get_filename (abfd)); | |
dce234bc | 15926 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
15927 | error (_("DW_FORM_strp pointing outside of " |
15928 | ".debug_str section [in module %s]"), | |
15929 | bfd_get_filename (abfd)); | |
4bdf3d34 | 15930 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 15931 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 15932 | return NULL; |
d521ce57 | 15933 | return (const char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
15934 | } |
15935 | ||
36586728 TT |
15936 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
15937 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
15938 | the string consists of a single NUL byte, return NULL; otherwise | |
15939 | return a pointer to the string. */ | |
15940 | ||
d521ce57 | 15941 | static const char * |
36586728 TT |
15942 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
15943 | { | |
15944 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
15945 | ||
15946 | if (dwz->str.buffer == NULL) | |
15947 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
15948 | "section [in module %s]"), | |
15949 | bfd_get_filename (dwz->dwz_bfd)); | |
15950 | if (str_offset >= dwz->str.size) | |
15951 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
15952 | ".debug_str section [in module %s]"), | |
15953 | bfd_get_filename (dwz->dwz_bfd)); | |
15954 | gdb_assert (HOST_CHAR_BIT == 8); | |
15955 | if (dwz->str.buffer[str_offset] == '\0') | |
15956 | return NULL; | |
d521ce57 | 15957 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
15958 | } |
15959 | ||
d521ce57 TT |
15960 | static const char * |
15961 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
15962 | const struct comp_unit_head *cu_header, |
15963 | unsigned int *bytes_read_ptr) | |
15964 | { | |
15965 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
15966 | ||
15967 | return read_indirect_string_at_offset (abfd, str_offset); | |
15968 | } | |
15969 | ||
12df843f | 15970 | static ULONGEST |
d521ce57 TT |
15971 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
15972 | unsigned int *bytes_read_ptr) | |
c906108c | 15973 | { |
12df843f | 15974 | ULONGEST result; |
ce5d95e1 | 15975 | unsigned int num_read; |
c906108c SS |
15976 | int i, shift; |
15977 | unsigned char byte; | |
15978 | ||
15979 | result = 0; | |
15980 | shift = 0; | |
15981 | num_read = 0; | |
15982 | i = 0; | |
15983 | while (1) | |
15984 | { | |
fe1b8b76 | 15985 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
15986 | buf++; |
15987 | num_read++; | |
12df843f | 15988 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
15989 | if ((byte & 128) == 0) |
15990 | { | |
15991 | break; | |
15992 | } | |
15993 | shift += 7; | |
15994 | } | |
15995 | *bytes_read_ptr = num_read; | |
15996 | return result; | |
15997 | } | |
15998 | ||
12df843f | 15999 | static LONGEST |
d521ce57 TT |
16000 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
16001 | unsigned int *bytes_read_ptr) | |
c906108c | 16002 | { |
12df843f | 16003 | LONGEST result; |
77e0b926 | 16004 | int i, shift, num_read; |
c906108c SS |
16005 | unsigned char byte; |
16006 | ||
16007 | result = 0; | |
16008 | shift = 0; | |
c906108c SS |
16009 | num_read = 0; |
16010 | i = 0; | |
16011 | while (1) | |
16012 | { | |
fe1b8b76 | 16013 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16014 | buf++; |
16015 | num_read++; | |
12df843f | 16016 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
16017 | shift += 7; |
16018 | if ((byte & 128) == 0) | |
16019 | { | |
16020 | break; | |
16021 | } | |
16022 | } | |
77e0b926 | 16023 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 16024 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
16025 | *bytes_read_ptr = num_read; |
16026 | return result; | |
16027 | } | |
16028 | ||
3019eac3 DE |
16029 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
16030 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
16031 | ADDR_SIZE is the size of addresses from the CU header. */ | |
16032 | ||
16033 | static CORE_ADDR | |
16034 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
16035 | { | |
16036 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
16037 | bfd *abfd = objfile->obfd; | |
16038 | const gdb_byte *info_ptr; | |
16039 | ||
16040 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
16041 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
16042 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 16043 | objfile_name (objfile)); |
3019eac3 DE |
16044 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
16045 | error (_("DW_FORM_addr_index pointing outside of " | |
16046 | ".debug_addr section [in module %s]"), | |
4262abfb | 16047 | objfile_name (objfile)); |
3019eac3 DE |
16048 | info_ptr = (dwarf2_per_objfile->addr.buffer |
16049 | + addr_base + addr_index * addr_size); | |
16050 | if (addr_size == 4) | |
16051 | return bfd_get_32 (abfd, info_ptr); | |
16052 | else | |
16053 | return bfd_get_64 (abfd, info_ptr); | |
16054 | } | |
16055 | ||
16056 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
16057 | ||
16058 | static CORE_ADDR | |
16059 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
16060 | { | |
16061 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
16062 | } | |
16063 | ||
16064 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
16065 | ||
16066 | static CORE_ADDR | |
d521ce57 | 16067 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
16068 | unsigned int *bytes_read) |
16069 | { | |
16070 | bfd *abfd = cu->objfile->obfd; | |
16071 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
16072 | ||
16073 | return read_addr_index (cu, addr_index); | |
16074 | } | |
16075 | ||
16076 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
16077 | back to dwarf2_read_addr_index. */ | |
16078 | ||
16079 | struct dwarf2_read_addr_index_data | |
16080 | { | |
16081 | ULONGEST addr_base; | |
16082 | int addr_size; | |
16083 | }; | |
16084 | ||
16085 | /* die_reader_func for dwarf2_read_addr_index. */ | |
16086 | ||
16087 | static void | |
16088 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 16089 | const gdb_byte *info_ptr, |
3019eac3 DE |
16090 | struct die_info *comp_unit_die, |
16091 | int has_children, | |
16092 | void *data) | |
16093 | { | |
16094 | struct dwarf2_cu *cu = reader->cu; | |
16095 | struct dwarf2_read_addr_index_data *aidata = | |
16096 | (struct dwarf2_read_addr_index_data *) data; | |
16097 | ||
16098 | aidata->addr_base = cu->addr_base; | |
16099 | aidata->addr_size = cu->header.addr_size; | |
16100 | } | |
16101 | ||
16102 | /* Given an index in .debug_addr, fetch the value. | |
16103 | NOTE: This can be called during dwarf expression evaluation, | |
16104 | long after the debug information has been read, and thus per_cu->cu | |
16105 | may no longer exist. */ | |
16106 | ||
16107 | CORE_ADDR | |
16108 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
16109 | unsigned int addr_index) | |
16110 | { | |
16111 | struct objfile *objfile = per_cu->objfile; | |
16112 | struct dwarf2_cu *cu = per_cu->cu; | |
16113 | ULONGEST addr_base; | |
16114 | int addr_size; | |
16115 | ||
16116 | /* This is intended to be called from outside this file. */ | |
16117 | dw2_setup (objfile); | |
16118 | ||
16119 | /* We need addr_base and addr_size. | |
16120 | If we don't have PER_CU->cu, we have to get it. | |
16121 | Nasty, but the alternative is storing the needed info in PER_CU, | |
16122 | which at this point doesn't seem justified: it's not clear how frequently | |
16123 | it would get used and it would increase the size of every PER_CU. | |
16124 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
16125 | so we're not in uncharted territory here. | |
16126 | Alas we need to be a bit more complicated as addr_base is contained | |
16127 | in the DIE. | |
16128 | ||
16129 | We don't need to read the entire CU(/TU). | |
16130 | We just need the header and top level die. | |
a1b64ce1 | 16131 | |
3019eac3 | 16132 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 16133 | For now we skip this optimization. */ |
3019eac3 DE |
16134 | |
16135 | if (cu != NULL) | |
16136 | { | |
16137 | addr_base = cu->addr_base; | |
16138 | addr_size = cu->header.addr_size; | |
16139 | } | |
16140 | else | |
16141 | { | |
16142 | struct dwarf2_read_addr_index_data aidata; | |
16143 | ||
a1b64ce1 DE |
16144 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
16145 | we need addr_base. */ | |
16146 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
16147 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
16148 | addr_base = aidata.addr_base; |
16149 | addr_size = aidata.addr_size; | |
16150 | } | |
16151 | ||
16152 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
16153 | } | |
16154 | ||
57d63ce2 DE |
16155 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
16156 | This is only used by the Fission support. */ | |
3019eac3 | 16157 | |
d521ce57 | 16158 | static const char * |
3019eac3 DE |
16159 | read_str_index (const struct die_reader_specs *reader, |
16160 | struct dwarf2_cu *cu, ULONGEST str_index) | |
16161 | { | |
16162 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4262abfb | 16163 | const char *dwo_name = objfile_name (objfile); |
3019eac3 | 16164 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
16165 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
16166 | struct dwarf2_section_info *str_offsets_section = | |
16167 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 16168 | const gdb_byte *info_ptr; |
3019eac3 | 16169 | ULONGEST str_offset; |
57d63ce2 | 16170 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 16171 | |
73869dc2 DE |
16172 | dwarf2_read_section (objfile, str_section); |
16173 | dwarf2_read_section (objfile, str_offsets_section); | |
16174 | if (str_section->buffer == NULL) | |
57d63ce2 | 16175 | error (_("%s used without .debug_str.dwo section" |
3019eac3 | 16176 | " in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16177 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16178 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 16179 | error (_("%s used without .debug_str_offsets.dwo section" |
3019eac3 | 16180 | " in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16181 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16182 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 16183 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
3019eac3 | 16184 | " section in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16185 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16186 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
16187 | + str_index * cu->header.offset_size); |
16188 | if (cu->header.offset_size == 4) | |
16189 | str_offset = bfd_get_32 (abfd, info_ptr); | |
16190 | else | |
16191 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 16192 | if (str_offset >= str_section->size) |
57d63ce2 | 16193 | error (_("Offset from %s pointing outside of" |
3019eac3 | 16194 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16195 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16196 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
16197 | } |
16198 | ||
3019eac3 DE |
16199 | /* Return the length of an LEB128 number in BUF. */ |
16200 | ||
16201 | static int | |
16202 | leb128_size (const gdb_byte *buf) | |
16203 | { | |
16204 | const gdb_byte *begin = buf; | |
16205 | gdb_byte byte; | |
16206 | ||
16207 | while (1) | |
16208 | { | |
16209 | byte = *buf++; | |
16210 | if ((byte & 128) == 0) | |
16211 | return buf - begin; | |
16212 | } | |
16213 | } | |
16214 | ||
c906108c | 16215 | static void |
e142c38c | 16216 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
16217 | { |
16218 | switch (lang) | |
16219 | { | |
16220 | case DW_LANG_C89: | |
76bee0cc | 16221 | case DW_LANG_C99: |
c906108c | 16222 | case DW_LANG_C: |
d1be3247 | 16223 | case DW_LANG_UPC: |
e142c38c | 16224 | cu->language = language_c; |
c906108c SS |
16225 | break; |
16226 | case DW_LANG_C_plus_plus: | |
e142c38c | 16227 | cu->language = language_cplus; |
c906108c | 16228 | break; |
6aecb9c2 JB |
16229 | case DW_LANG_D: |
16230 | cu->language = language_d; | |
16231 | break; | |
c906108c SS |
16232 | case DW_LANG_Fortran77: |
16233 | case DW_LANG_Fortran90: | |
b21b22e0 | 16234 | case DW_LANG_Fortran95: |
e142c38c | 16235 | cu->language = language_fortran; |
c906108c | 16236 | break; |
a766d390 DE |
16237 | case DW_LANG_Go: |
16238 | cu->language = language_go; | |
16239 | break; | |
c906108c | 16240 | case DW_LANG_Mips_Assembler: |
e142c38c | 16241 | cu->language = language_asm; |
c906108c | 16242 | break; |
bebd888e | 16243 | case DW_LANG_Java: |
e142c38c | 16244 | cu->language = language_java; |
bebd888e | 16245 | break; |
c906108c | 16246 | case DW_LANG_Ada83: |
8aaf0b47 | 16247 | case DW_LANG_Ada95: |
bc5f45f8 JB |
16248 | cu->language = language_ada; |
16249 | break; | |
72019c9c GM |
16250 | case DW_LANG_Modula2: |
16251 | cu->language = language_m2; | |
16252 | break; | |
fe8e67fd PM |
16253 | case DW_LANG_Pascal83: |
16254 | cu->language = language_pascal; | |
16255 | break; | |
22566fbd DJ |
16256 | case DW_LANG_ObjC: |
16257 | cu->language = language_objc; | |
16258 | break; | |
c906108c SS |
16259 | case DW_LANG_Cobol74: |
16260 | case DW_LANG_Cobol85: | |
c906108c | 16261 | default: |
e142c38c | 16262 | cu->language = language_minimal; |
c906108c SS |
16263 | break; |
16264 | } | |
e142c38c | 16265 | cu->language_defn = language_def (cu->language); |
c906108c SS |
16266 | } |
16267 | ||
16268 | /* Return the named attribute or NULL if not there. */ | |
16269 | ||
16270 | static struct attribute * | |
e142c38c | 16271 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 16272 | { |
a48e046c | 16273 | for (;;) |
c906108c | 16274 | { |
a48e046c TT |
16275 | unsigned int i; |
16276 | struct attribute *spec = NULL; | |
16277 | ||
16278 | for (i = 0; i < die->num_attrs; ++i) | |
16279 | { | |
16280 | if (die->attrs[i].name == name) | |
16281 | return &die->attrs[i]; | |
16282 | if (die->attrs[i].name == DW_AT_specification | |
16283 | || die->attrs[i].name == DW_AT_abstract_origin) | |
16284 | spec = &die->attrs[i]; | |
16285 | } | |
16286 | ||
16287 | if (!spec) | |
16288 | break; | |
c906108c | 16289 | |
f2f0e013 | 16290 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 16291 | } |
c5aa993b | 16292 | |
c906108c SS |
16293 | return NULL; |
16294 | } | |
16295 | ||
348e048f DE |
16296 | /* Return the named attribute or NULL if not there, |
16297 | but do not follow DW_AT_specification, etc. | |
16298 | This is for use in contexts where we're reading .debug_types dies. | |
16299 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
16300 | back up the chain, and we want to go down. */ | |
16301 | ||
16302 | static struct attribute * | |
45e58e77 | 16303 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
16304 | { |
16305 | unsigned int i; | |
16306 | ||
16307 | for (i = 0; i < die->num_attrs; ++i) | |
16308 | if (die->attrs[i].name == name) | |
16309 | return &die->attrs[i]; | |
16310 | ||
16311 | return NULL; | |
16312 | } | |
16313 | ||
05cf31d1 JB |
16314 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
16315 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 16316 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
16317 | |
16318 | static int | |
16319 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
16320 | { | |
16321 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16322 | ||
16323 | return (attr && DW_UNSND (attr)); | |
16324 | } | |
16325 | ||
3ca72b44 | 16326 | static int |
e142c38c | 16327 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 16328 | { |
05cf31d1 JB |
16329 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
16330 | which value is non-zero. However, we have to be careful with | |
16331 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
16332 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
16333 | end up accidently finding a declaration attribute that belongs | |
16334 | to a different DIE referenced by the specification attribute, | |
16335 | even though the given DIE does not have a declaration attribute. */ | |
16336 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
16337 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
16338 | } |
16339 | ||
63d06c5c | 16340 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 16341 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
16342 | containing the return value on output. If there is no |
16343 | specification, but there is an abstract origin, that is | |
16344 | returned. */ | |
63d06c5c DC |
16345 | |
16346 | static struct die_info * | |
f2f0e013 | 16347 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 16348 | { |
f2f0e013 DJ |
16349 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
16350 | *spec_cu); | |
63d06c5c | 16351 | |
edb3359d DJ |
16352 | if (spec_attr == NULL) |
16353 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
16354 | ||
63d06c5c DC |
16355 | if (spec_attr == NULL) |
16356 | return NULL; | |
16357 | else | |
f2f0e013 | 16358 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 16359 | } |
c906108c | 16360 | |
debd256d | 16361 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
16362 | refers to. |
16363 | NOTE: This is also used as a "cleanup" function. */ | |
16364 | ||
debd256d JB |
16365 | static void |
16366 | free_line_header (struct line_header *lh) | |
16367 | { | |
16368 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 16369 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
16370 | |
16371 | /* Remember that all the lh->file_names[i].name pointers are | |
16372 | pointers into debug_line_buffer, and don't need to be freed. */ | |
16373 | if (lh->file_names) | |
a8bc7b56 | 16374 | xfree (lh->file_names); |
debd256d JB |
16375 | |
16376 | /* Similarly for the include directory names. */ | |
16377 | if (lh->include_dirs) | |
a8bc7b56 | 16378 | xfree (lh->include_dirs); |
debd256d | 16379 | |
a8bc7b56 | 16380 | xfree (lh); |
debd256d JB |
16381 | } |
16382 | ||
debd256d | 16383 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 16384 | |
debd256d | 16385 | static void |
d521ce57 | 16386 | add_include_dir (struct line_header *lh, const char *include_dir) |
c906108c | 16387 | { |
debd256d JB |
16388 | /* Grow the array if necessary. */ |
16389 | if (lh->include_dirs_size == 0) | |
c5aa993b | 16390 | { |
debd256d JB |
16391 | lh->include_dirs_size = 1; /* for testing */ |
16392 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
16393 | * sizeof (*lh->include_dirs)); | |
16394 | } | |
16395 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
16396 | { | |
16397 | lh->include_dirs_size *= 2; | |
16398 | lh->include_dirs = xrealloc (lh->include_dirs, | |
16399 | (lh->include_dirs_size | |
16400 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 16401 | } |
c906108c | 16402 | |
debd256d JB |
16403 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
16404 | } | |
6e70227d | 16405 | |
debd256d | 16406 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 16407 | |
debd256d JB |
16408 | static void |
16409 | add_file_name (struct line_header *lh, | |
d521ce57 | 16410 | const char *name, |
debd256d JB |
16411 | unsigned int dir_index, |
16412 | unsigned int mod_time, | |
16413 | unsigned int length) | |
16414 | { | |
16415 | struct file_entry *fe; | |
16416 | ||
16417 | /* Grow the array if necessary. */ | |
16418 | if (lh->file_names_size == 0) | |
16419 | { | |
16420 | lh->file_names_size = 1; /* for testing */ | |
16421 | lh->file_names = xmalloc (lh->file_names_size | |
16422 | * sizeof (*lh->file_names)); | |
16423 | } | |
16424 | else if (lh->num_file_names >= lh->file_names_size) | |
16425 | { | |
16426 | lh->file_names_size *= 2; | |
16427 | lh->file_names = xrealloc (lh->file_names, | |
16428 | (lh->file_names_size | |
16429 | * sizeof (*lh->file_names))); | |
16430 | } | |
16431 | ||
16432 | fe = &lh->file_names[lh->num_file_names++]; | |
16433 | fe->name = name; | |
16434 | fe->dir_index = dir_index; | |
16435 | fe->mod_time = mod_time; | |
16436 | fe->length = length; | |
aaa75496 | 16437 | fe->included_p = 0; |
cb1df416 | 16438 | fe->symtab = NULL; |
debd256d | 16439 | } |
6e70227d | 16440 | |
36586728 TT |
16441 | /* A convenience function to find the proper .debug_line section for a |
16442 | CU. */ | |
16443 | ||
16444 | static struct dwarf2_section_info * | |
16445 | get_debug_line_section (struct dwarf2_cu *cu) | |
16446 | { | |
16447 | struct dwarf2_section_info *section; | |
16448 | ||
16449 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
16450 | DWO file. */ | |
16451 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
16452 | section = &cu->dwo_unit->dwo_file->sections.line; | |
16453 | else if (cu->per_cu->is_dwz) | |
16454 | { | |
16455 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
16456 | ||
16457 | section = &dwz->line; | |
16458 | } | |
16459 | else | |
16460 | section = &dwarf2_per_objfile->line; | |
16461 | ||
16462 | return section; | |
16463 | } | |
16464 | ||
debd256d | 16465 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 16466 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 16467 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
16468 | |
16469 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
16470 | the returned object point into the dwarf line section buffer, |
16471 | and must not be freed. */ | |
ae2de4f8 | 16472 | |
debd256d | 16473 | static struct line_header * |
3019eac3 | 16474 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
16475 | { |
16476 | struct cleanup *back_to; | |
16477 | struct line_header *lh; | |
d521ce57 | 16478 | const gdb_byte *line_ptr; |
c764a876 | 16479 | unsigned int bytes_read, offset_size; |
debd256d | 16480 | int i; |
d521ce57 | 16481 | const char *cur_dir, *cur_file; |
3019eac3 DE |
16482 | struct dwarf2_section_info *section; |
16483 | bfd *abfd; | |
16484 | ||
36586728 | 16485 | section = get_debug_line_section (cu); |
3019eac3 DE |
16486 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
16487 | if (section->buffer == NULL) | |
debd256d | 16488 | { |
3019eac3 DE |
16489 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
16490 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
16491 | else | |
16492 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
16493 | return 0; |
16494 | } | |
16495 | ||
fceca515 DE |
16496 | /* We can't do this until we know the section is non-empty. |
16497 | Only then do we know we have such a section. */ | |
a32a8923 | 16498 | abfd = get_section_bfd_owner (section); |
fceca515 | 16499 | |
a738430d MK |
16500 | /* Make sure that at least there's room for the total_length field. |
16501 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 16502 | if (offset + 4 >= section->size) |
debd256d | 16503 | { |
4d3c2250 | 16504 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
16505 | return 0; |
16506 | } | |
16507 | ||
16508 | lh = xmalloc (sizeof (*lh)); | |
16509 | memset (lh, 0, sizeof (*lh)); | |
16510 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
16511 | (void *) lh); | |
16512 | ||
3019eac3 | 16513 | line_ptr = section->buffer + offset; |
debd256d | 16514 | |
a738430d | 16515 | /* Read in the header. */ |
6e70227d | 16516 | lh->total_length = |
c764a876 DE |
16517 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
16518 | &bytes_read, &offset_size); | |
debd256d | 16519 | line_ptr += bytes_read; |
3019eac3 | 16520 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 16521 | { |
4d3c2250 | 16522 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
2f324bf6 | 16523 | do_cleanups (back_to); |
debd256d JB |
16524 | return 0; |
16525 | } | |
16526 | lh->statement_program_end = line_ptr + lh->total_length; | |
16527 | lh->version = read_2_bytes (abfd, line_ptr); | |
16528 | line_ptr += 2; | |
c764a876 DE |
16529 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
16530 | line_ptr += offset_size; | |
debd256d JB |
16531 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
16532 | line_ptr += 1; | |
2dc7f7b3 TT |
16533 | if (lh->version >= 4) |
16534 | { | |
16535 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
16536 | line_ptr += 1; | |
16537 | } | |
16538 | else | |
16539 | lh->maximum_ops_per_instruction = 1; | |
16540 | ||
16541 | if (lh->maximum_ops_per_instruction == 0) | |
16542 | { | |
16543 | lh->maximum_ops_per_instruction = 1; | |
16544 | complaint (&symfile_complaints, | |
3e43a32a MS |
16545 | _("invalid maximum_ops_per_instruction " |
16546 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
16547 | } |
16548 | ||
debd256d JB |
16549 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
16550 | line_ptr += 1; | |
16551 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
16552 | line_ptr += 1; | |
16553 | lh->line_range = read_1_byte (abfd, line_ptr); | |
16554 | line_ptr += 1; | |
16555 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
16556 | line_ptr += 1; | |
16557 | lh->standard_opcode_lengths | |
fe1b8b76 | 16558 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
16559 | |
16560 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
16561 | for (i = 1; i < lh->opcode_base; ++i) | |
16562 | { | |
16563 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
16564 | line_ptr += 1; | |
16565 | } | |
16566 | ||
a738430d | 16567 | /* Read directory table. */ |
9b1c24c8 | 16568 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
16569 | { |
16570 | line_ptr += bytes_read; | |
16571 | add_include_dir (lh, cur_dir); | |
16572 | } | |
16573 | line_ptr += bytes_read; | |
16574 | ||
a738430d | 16575 | /* Read file name table. */ |
9b1c24c8 | 16576 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
16577 | { |
16578 | unsigned int dir_index, mod_time, length; | |
16579 | ||
16580 | line_ptr += bytes_read; | |
16581 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16582 | line_ptr += bytes_read; | |
16583 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16584 | line_ptr += bytes_read; | |
16585 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16586 | line_ptr += bytes_read; | |
16587 | ||
16588 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
16589 | } | |
16590 | line_ptr += bytes_read; | |
6e70227d | 16591 | lh->statement_program_start = line_ptr; |
debd256d | 16592 | |
3019eac3 | 16593 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 16594 | complaint (&symfile_complaints, |
3e43a32a MS |
16595 | _("line number info header doesn't " |
16596 | "fit in `.debug_line' section")); | |
debd256d JB |
16597 | |
16598 | discard_cleanups (back_to); | |
16599 | return lh; | |
16600 | } | |
c906108c | 16601 | |
c6da4cef DE |
16602 | /* Subroutine of dwarf_decode_lines to simplify it. |
16603 | Return the file name of the psymtab for included file FILE_INDEX | |
16604 | in line header LH of PST. | |
16605 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
16606 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
16607 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
16608 | ||
16609 | The function creates dangling cleanup registration. */ | |
c6da4cef | 16610 | |
d521ce57 | 16611 | static const char * |
c6da4cef DE |
16612 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
16613 | const struct partial_symtab *pst, | |
16614 | const char *comp_dir) | |
16615 | { | |
16616 | const struct file_entry fe = lh->file_names [file_index]; | |
d521ce57 TT |
16617 | const char *include_name = fe.name; |
16618 | const char *include_name_to_compare = include_name; | |
16619 | const char *dir_name = NULL; | |
72b9f47f TT |
16620 | const char *pst_filename; |
16621 | char *copied_name = NULL; | |
c6da4cef DE |
16622 | int file_is_pst; |
16623 | ||
16624 | if (fe.dir_index) | |
16625 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
16626 | ||
16627 | if (!IS_ABSOLUTE_PATH (include_name) | |
16628 | && (dir_name != NULL || comp_dir != NULL)) | |
16629 | { | |
16630 | /* Avoid creating a duplicate psymtab for PST. | |
16631 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
16632 | Before we do the comparison, however, we need to account | |
16633 | for DIR_NAME and COMP_DIR. | |
16634 | First prepend dir_name (if non-NULL). If we still don't | |
16635 | have an absolute path prepend comp_dir (if non-NULL). | |
16636 | However, the directory we record in the include-file's | |
16637 | psymtab does not contain COMP_DIR (to match the | |
16638 | corresponding symtab(s)). | |
16639 | ||
16640 | Example: | |
16641 | ||
16642 | bash$ cd /tmp | |
16643 | bash$ gcc -g ./hello.c | |
16644 | include_name = "hello.c" | |
16645 | dir_name = "." | |
16646 | DW_AT_comp_dir = comp_dir = "/tmp" | |
16647 | DW_AT_name = "./hello.c" */ | |
16648 | ||
16649 | if (dir_name != NULL) | |
16650 | { | |
d521ce57 TT |
16651 | char *tem = concat (dir_name, SLASH_STRING, |
16652 | include_name, (char *)NULL); | |
16653 | ||
16654 | make_cleanup (xfree, tem); | |
16655 | include_name = tem; | |
c6da4cef | 16656 | include_name_to_compare = include_name; |
c6da4cef DE |
16657 | } |
16658 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
16659 | { | |
d521ce57 TT |
16660 | char *tem = concat (comp_dir, SLASH_STRING, |
16661 | include_name, (char *)NULL); | |
16662 | ||
16663 | make_cleanup (xfree, tem); | |
16664 | include_name_to_compare = tem; | |
c6da4cef DE |
16665 | } |
16666 | } | |
16667 | ||
16668 | pst_filename = pst->filename; | |
16669 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
16670 | { | |
72b9f47f TT |
16671 | copied_name = concat (pst->dirname, SLASH_STRING, |
16672 | pst_filename, (char *)NULL); | |
16673 | pst_filename = copied_name; | |
c6da4cef DE |
16674 | } |
16675 | ||
1e3fad37 | 16676 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 16677 | |
72b9f47f TT |
16678 | if (copied_name != NULL) |
16679 | xfree (copied_name); | |
c6da4cef DE |
16680 | |
16681 | if (file_is_pst) | |
16682 | return NULL; | |
16683 | return include_name; | |
16684 | } | |
16685 | ||
c91513d8 PP |
16686 | /* Ignore this record_line request. */ |
16687 | ||
16688 | static void | |
16689 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
16690 | { | |
16691 | return; | |
16692 | } | |
16693 | ||
f3f5162e DE |
16694 | /* Subroutine of dwarf_decode_lines to simplify it. |
16695 | Process the line number information in LH. */ | |
debd256d | 16696 | |
c906108c | 16697 | static void |
f3f5162e DE |
16698 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
16699 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 16700 | { |
d521ce57 TT |
16701 | const gdb_byte *line_ptr, *extended_end; |
16702 | const gdb_byte *line_end; | |
a8c50c1f | 16703 | unsigned int bytes_read, extended_len; |
c906108c | 16704 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
16705 | CORE_ADDR baseaddr; |
16706 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 16707 | bfd *abfd = objfile->obfd; |
fbf65064 | 16708 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 16709 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 16710 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
16711 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
16712 | = record_line; | |
e142c38c DJ |
16713 | |
16714 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 16715 | |
debd256d JB |
16716 | line_ptr = lh->statement_program_start; |
16717 | line_end = lh->statement_program_end; | |
c906108c SS |
16718 | |
16719 | /* Read the statement sequences until there's nothing left. */ | |
16720 | while (line_ptr < line_end) | |
16721 | { | |
16722 | /* state machine registers */ | |
16723 | CORE_ADDR address = 0; | |
16724 | unsigned int file = 1; | |
16725 | unsigned int line = 1; | |
16726 | unsigned int column = 0; | |
debd256d | 16727 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
16728 | int basic_block = 0; |
16729 | int end_sequence = 0; | |
fbf65064 | 16730 | CORE_ADDR addr; |
2dc7f7b3 | 16731 | unsigned char op_index = 0; |
c906108c | 16732 | |
aaa75496 | 16733 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 16734 | { |
aaa75496 | 16735 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
16736 | /* lh->include_dirs and lh->file_names are 0-based, but the |
16737 | directory and file name numbers in the statement program | |
16738 | are 1-based. */ | |
16739 | struct file_entry *fe = &lh->file_names[file - 1]; | |
d521ce57 | 16740 | const char *dir = NULL; |
a738430d | 16741 | |
debd256d JB |
16742 | if (fe->dir_index) |
16743 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
16744 | |
16745 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
16746 | } |
16747 | ||
a738430d | 16748 | /* Decode the table. */ |
c5aa993b | 16749 | while (!end_sequence) |
c906108c SS |
16750 | { |
16751 | op_code = read_1_byte (abfd, line_ptr); | |
16752 | line_ptr += 1; | |
59205f5a JB |
16753 | if (line_ptr > line_end) |
16754 | { | |
16755 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
16756 | break; | |
16757 | } | |
9aa1fe7e | 16758 | |
debd256d | 16759 | if (op_code >= lh->opcode_base) |
6e70227d | 16760 | { |
a738430d | 16761 | /* Special operand. */ |
debd256d | 16762 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
16763 | address += (((op_index + (adj_opcode / lh->line_range)) |
16764 | / lh->maximum_ops_per_instruction) | |
16765 | * lh->minimum_instruction_length); | |
16766 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
16767 | % lh->maximum_ops_per_instruction); | |
debd256d | 16768 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 16769 | if (lh->num_file_names < file || file == 0) |
25e43795 | 16770 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
16771 | /* For now we ignore lines not starting on an |
16772 | instruction boundary. */ | |
16773 | else if (op_index == 0) | |
25e43795 DJ |
16774 | { |
16775 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 16776 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
16777 | { |
16778 | if (last_subfile != current_subfile) | |
16779 | { | |
16780 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
16781 | if (last_subfile) | |
c91513d8 | 16782 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
16783 | last_subfile = current_subfile; |
16784 | } | |
25e43795 | 16785 | /* Append row to matrix using current values. */ |
7019d805 | 16786 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 16787 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 16788 | } |
25e43795 | 16789 | } |
ca5f395d | 16790 | basic_block = 0; |
9aa1fe7e GK |
16791 | } |
16792 | else switch (op_code) | |
c906108c SS |
16793 | { |
16794 | case DW_LNS_extended_op: | |
3e43a32a MS |
16795 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
16796 | &bytes_read); | |
473b7be6 | 16797 | line_ptr += bytes_read; |
a8c50c1f | 16798 | extended_end = line_ptr + extended_len; |
c906108c SS |
16799 | extended_op = read_1_byte (abfd, line_ptr); |
16800 | line_ptr += 1; | |
16801 | switch (extended_op) | |
16802 | { | |
16803 | case DW_LNE_end_sequence: | |
c91513d8 | 16804 | p_record_line = record_line; |
c906108c | 16805 | end_sequence = 1; |
c906108c SS |
16806 | break; |
16807 | case DW_LNE_set_address: | |
e7c27a73 | 16808 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
16809 | |
16810 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
16811 | { | |
16812 | /* This line table is for a function which has been | |
16813 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
16814 | ||
16815 | long line_offset | |
36586728 | 16816 | = line_ptr - get_debug_line_section (cu)->buffer; |
c91513d8 PP |
16817 | |
16818 | complaint (&symfile_complaints, | |
16819 | _(".debug_line address at offset 0x%lx is 0 " | |
16820 | "[in module %s]"), | |
4262abfb | 16821 | line_offset, objfile_name (objfile)); |
c91513d8 PP |
16822 | p_record_line = noop_record_line; |
16823 | } | |
16824 | ||
2dc7f7b3 | 16825 | op_index = 0; |
107d2387 AC |
16826 | line_ptr += bytes_read; |
16827 | address += baseaddr; | |
c906108c SS |
16828 | break; |
16829 | case DW_LNE_define_file: | |
debd256d | 16830 | { |
d521ce57 | 16831 | const char *cur_file; |
debd256d | 16832 | unsigned int dir_index, mod_time, length; |
6e70227d | 16833 | |
3e43a32a MS |
16834 | cur_file = read_direct_string (abfd, line_ptr, |
16835 | &bytes_read); | |
debd256d JB |
16836 | line_ptr += bytes_read; |
16837 | dir_index = | |
16838 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16839 | line_ptr += bytes_read; | |
16840 | mod_time = | |
16841 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16842 | line_ptr += bytes_read; | |
16843 | length = | |
16844 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16845 | line_ptr += bytes_read; | |
16846 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
16847 | } | |
c906108c | 16848 | break; |
d0c6ba3d CC |
16849 | case DW_LNE_set_discriminator: |
16850 | /* The discriminator is not interesting to the debugger; | |
16851 | just ignore it. */ | |
16852 | line_ptr = extended_end; | |
16853 | break; | |
c906108c | 16854 | default: |
4d3c2250 | 16855 | complaint (&symfile_complaints, |
e2e0b3e5 | 16856 | _("mangled .debug_line section")); |
debd256d | 16857 | return; |
c906108c | 16858 | } |
a8c50c1f DJ |
16859 | /* Make sure that we parsed the extended op correctly. If e.g. |
16860 | we expected a different address size than the producer used, | |
16861 | we may have read the wrong number of bytes. */ | |
16862 | if (line_ptr != extended_end) | |
16863 | { | |
16864 | complaint (&symfile_complaints, | |
16865 | _("mangled .debug_line section")); | |
16866 | return; | |
16867 | } | |
c906108c SS |
16868 | break; |
16869 | case DW_LNS_copy: | |
59205f5a | 16870 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
16871 | dwarf2_debug_line_missing_file_complaint (); |
16872 | else | |
366da635 | 16873 | { |
25e43795 | 16874 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 16875 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
16876 | { |
16877 | if (last_subfile != current_subfile) | |
16878 | { | |
16879 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
16880 | if (last_subfile) | |
c91513d8 | 16881 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
16882 | last_subfile = current_subfile; |
16883 | } | |
7019d805 | 16884 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 16885 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 16886 | } |
366da635 | 16887 | } |
c906108c SS |
16888 | basic_block = 0; |
16889 | break; | |
16890 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
16891 | { |
16892 | CORE_ADDR adjust | |
16893 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16894 | ||
16895 | address += (((op_index + adjust) | |
16896 | / lh->maximum_ops_per_instruction) | |
16897 | * lh->minimum_instruction_length); | |
16898 | op_index = ((op_index + adjust) | |
16899 | % lh->maximum_ops_per_instruction); | |
16900 | line_ptr += bytes_read; | |
16901 | } | |
c906108c SS |
16902 | break; |
16903 | case DW_LNS_advance_line: | |
16904 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
16905 | line_ptr += bytes_read; | |
16906 | break; | |
16907 | case DW_LNS_set_file: | |
debd256d | 16908 | { |
a738430d MK |
16909 | /* The arrays lh->include_dirs and lh->file_names are |
16910 | 0-based, but the directory and file name numbers in | |
16911 | the statement program are 1-based. */ | |
debd256d | 16912 | struct file_entry *fe; |
d521ce57 | 16913 | const char *dir = NULL; |
a738430d | 16914 | |
debd256d JB |
16915 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
16916 | line_ptr += bytes_read; | |
59205f5a | 16917 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
16918 | dwarf2_debug_line_missing_file_complaint (); |
16919 | else | |
16920 | { | |
16921 | fe = &lh->file_names[file - 1]; | |
16922 | if (fe->dir_index) | |
16923 | dir = lh->include_dirs[fe->dir_index - 1]; | |
16924 | if (!decode_for_pst_p) | |
16925 | { | |
16926 | last_subfile = current_subfile; | |
16927 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
16928 | } | |
16929 | } | |
debd256d | 16930 | } |
c906108c SS |
16931 | break; |
16932 | case DW_LNS_set_column: | |
16933 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16934 | line_ptr += bytes_read; | |
16935 | break; | |
16936 | case DW_LNS_negate_stmt: | |
16937 | is_stmt = (!is_stmt); | |
16938 | break; | |
16939 | case DW_LNS_set_basic_block: | |
16940 | basic_block = 1; | |
16941 | break; | |
c2c6d25f JM |
16942 | /* Add to the address register of the state machine the |
16943 | address increment value corresponding to special opcode | |
a738430d MK |
16944 | 255. I.e., this value is scaled by the minimum |
16945 | instruction length since special opcode 255 would have | |
b021a221 | 16946 | scaled the increment. */ |
c906108c | 16947 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
16948 | { |
16949 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
16950 | ||
16951 | address += (((op_index + adjust) | |
16952 | / lh->maximum_ops_per_instruction) | |
16953 | * lh->minimum_instruction_length); | |
16954 | op_index = ((op_index + adjust) | |
16955 | % lh->maximum_ops_per_instruction); | |
16956 | } | |
c906108c SS |
16957 | break; |
16958 | case DW_LNS_fixed_advance_pc: | |
16959 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 16960 | op_index = 0; |
c906108c SS |
16961 | line_ptr += 2; |
16962 | break; | |
9aa1fe7e | 16963 | default: |
a738430d MK |
16964 | { |
16965 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 16966 | int i; |
a738430d | 16967 | |
debd256d | 16968 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
16969 | { |
16970 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16971 | line_ptr += bytes_read; | |
16972 | } | |
16973 | } | |
c906108c SS |
16974 | } |
16975 | } | |
59205f5a JB |
16976 | if (lh->num_file_names < file || file == 0) |
16977 | dwarf2_debug_line_missing_file_complaint (); | |
16978 | else | |
16979 | { | |
16980 | lh->file_names[file - 1].included_p = 1; | |
16981 | if (!decode_for_pst_p) | |
fbf65064 UW |
16982 | { |
16983 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 16984 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 16985 | } |
59205f5a | 16986 | } |
c906108c | 16987 | } |
f3f5162e DE |
16988 | } |
16989 | ||
16990 | /* Decode the Line Number Program (LNP) for the given line_header | |
16991 | structure and CU. The actual information extracted and the type | |
16992 | of structures created from the LNP depends on the value of PST. | |
16993 | ||
16994 | 1. If PST is NULL, then this procedure uses the data from the program | |
16995 | to create all necessary symbol tables, and their linetables. | |
16996 | ||
16997 | 2. If PST is not NULL, this procedure reads the program to determine | |
16998 | the list of files included by the unit represented by PST, and | |
16999 | builds all the associated partial symbol tables. | |
17000 | ||
17001 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17002 | It is used for relative paths in the line table. | |
17003 | NOTE: When processing partial symtabs (pst != NULL), | |
17004 | comp_dir == pst->dirname. | |
17005 | ||
17006 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
17007 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
17008 | symtab we don't use it in the name of the psymtabs we create. | |
17009 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
17010 | A good testcase for this is mb-inline.exp. */ | |
17011 | ||
17012 | static void | |
17013 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
17014 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
17015 | int want_line_info) | |
17016 | { | |
17017 | struct objfile *objfile = cu->objfile; | |
17018 | const int decode_for_pst_p = (pst != NULL); | |
17019 | struct subfile *first_subfile = current_subfile; | |
17020 | ||
17021 | if (want_line_info) | |
17022 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
17023 | |
17024 | if (decode_for_pst_p) | |
17025 | { | |
17026 | int file_index; | |
17027 | ||
17028 | /* Now that we're done scanning the Line Header Program, we can | |
17029 | create the psymtab of each included file. */ | |
17030 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
17031 | if (lh->file_names[file_index].included_p == 1) | |
17032 | { | |
d521ce57 | 17033 | const char *include_name = |
c6da4cef DE |
17034 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
17035 | if (include_name != NULL) | |
aaa75496 JB |
17036 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
17037 | } | |
17038 | } | |
cb1df416 DJ |
17039 | else |
17040 | { | |
17041 | /* Make sure a symtab is created for every file, even files | |
17042 | which contain only variables (i.e. no code with associated | |
17043 | line numbers). */ | |
cb1df416 | 17044 | int i; |
cb1df416 DJ |
17045 | |
17046 | for (i = 0; i < lh->num_file_names; i++) | |
17047 | { | |
d521ce57 | 17048 | const char *dir = NULL; |
f3f5162e | 17049 | struct file_entry *fe; |
9a619af0 | 17050 | |
cb1df416 DJ |
17051 | fe = &lh->file_names[i]; |
17052 | if (fe->dir_index) | |
17053 | dir = lh->include_dirs[fe->dir_index - 1]; | |
17054 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
17055 | ||
17056 | /* Skip the main file; we don't need it, and it must be | |
17057 | allocated last, so that it will show up before the | |
17058 | non-primary symtabs in the objfile's symtab list. */ | |
17059 | if (current_subfile == first_subfile) | |
17060 | continue; | |
17061 | ||
17062 | if (current_subfile->symtab == NULL) | |
17063 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 17064 | objfile); |
cb1df416 DJ |
17065 | fe->symtab = current_subfile->symtab; |
17066 | } | |
17067 | } | |
c906108c SS |
17068 | } |
17069 | ||
17070 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
17071 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
17072 | or NULL if not known. COMP_DIR is the compilation directory for the |
17073 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
17074 | This routine tries to keep line numbers from identical absolute and |
17075 | relative file names in a common subfile. | |
17076 | ||
17077 | Using the `list' example from the GDB testsuite, which resides in | |
17078 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
17079 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
17080 | ||
c5aa993b JM |
17081 | DW_AT_name: /srcdir/list0.c |
17082 | DW_AT_comp_dir: /compdir | |
357e46e7 | 17083 | files.files[0].name: list0.h |
c5aa993b | 17084 | files.files[0].dir: /srcdir |
357e46e7 | 17085 | files.files[1].name: list0.c |
c5aa993b | 17086 | files.files[1].dir: /srcdir |
c906108c SS |
17087 | |
17088 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
17089 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
17090 | start_subfile will ensure that this happens provided that we pass the | |
17091 | concatenation of files.files[1].dir and files.files[1].name as the | |
17092 | subfile's name. */ | |
c906108c SS |
17093 | |
17094 | static void | |
d521ce57 | 17095 | dwarf2_start_subfile (const char *filename, const char *dirname, |
3e43a32a | 17096 | const char *comp_dir) |
c906108c | 17097 | { |
d521ce57 | 17098 | char *copy = NULL; |
4f1520fb FR |
17099 | |
17100 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
17101 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
17102 | second argument to start_subfile. To be consistent, we do the | |
17103 | same here. In order not to lose the line information directory, | |
17104 | we concatenate it to the filename when it makes sense. | |
17105 | Note that the Dwarf3 standard says (speaking of filenames in line | |
17106 | information): ``The directory index is ignored for file names | |
17107 | that represent full path names''. Thus ignoring dirname in the | |
17108 | `else' branch below isn't an issue. */ | |
c906108c | 17109 | |
d5166ae1 | 17110 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
17111 | { |
17112 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
17113 | filename = copy; | |
17114 | } | |
c906108c | 17115 | |
d521ce57 | 17116 | start_subfile (filename, comp_dir); |
4f1520fb | 17117 | |
d521ce57 TT |
17118 | if (copy != NULL) |
17119 | xfree (copy); | |
c906108c SS |
17120 | } |
17121 | ||
f4dc4d17 DE |
17122 | /* Start a symtab for DWARF. |
17123 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
17124 | ||
17125 | static void | |
17126 | dwarf2_start_symtab (struct dwarf2_cu *cu, | |
15d034d0 | 17127 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 DE |
17128 | { |
17129 | start_symtab (name, comp_dir, low_pc); | |
17130 | record_debugformat ("DWARF 2"); | |
17131 | record_producer (cu->producer); | |
17132 | ||
17133 | /* We assume that we're processing GCC output. */ | |
17134 | processing_gcc_compilation = 2; | |
17135 | ||
4d4ec4e5 | 17136 | cu->processing_has_namespace_info = 0; |
f4dc4d17 DE |
17137 | } |
17138 | ||
4c2df51b DJ |
17139 | static void |
17140 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 17141 | struct dwarf2_cu *cu) |
4c2df51b | 17142 | { |
e7c27a73 DJ |
17143 | struct objfile *objfile = cu->objfile; |
17144 | struct comp_unit_head *cu_header = &cu->header; | |
17145 | ||
4c2df51b DJ |
17146 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
17147 | code here to turn a symbol with DW_AT_external and a | |
17148 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
17149 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
17150 | with some versions of binutils) where shared libraries could have | |
17151 | relocations against symbols in their debug information - the | |
17152 | minimal symbol would have the right address, but the debug info | |
17153 | would not. It's no longer necessary, because we will explicitly | |
17154 | apply relocations when we read in the debug information now. */ | |
17155 | ||
17156 | /* A DW_AT_location attribute with no contents indicates that a | |
17157 | variable has been optimized away. */ | |
17158 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
17159 | { | |
f1e6e072 | 17160 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
17161 | return; |
17162 | } | |
17163 | ||
17164 | /* Handle one degenerate form of location expression specially, to | |
17165 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
17166 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
17167 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
17168 | |
17169 | if (attr_form_is_block (attr) | |
3019eac3 DE |
17170 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
17171 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
17172 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
17173 | && (DW_BLOCK (attr)->size | |
17174 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 17175 | { |
891d2f0b | 17176 | unsigned int dummy; |
4c2df51b | 17177 | |
3019eac3 DE |
17178 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
17179 | SYMBOL_VALUE_ADDRESS (sym) = | |
17180 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
17181 | else | |
17182 | SYMBOL_VALUE_ADDRESS (sym) = | |
17183 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 17184 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
17185 | fixup_symbol_section (sym, objfile); |
17186 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
17187 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
17188 | return; |
17189 | } | |
17190 | ||
17191 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
17192 | expression evaluator, and use LOC_COMPUTED only when necessary | |
17193 | (i.e. when the value of a register or memory location is | |
17194 | referenced, or a thread-local block, etc.). Then again, it might | |
17195 | not be worthwhile. I'm assuming that it isn't unless performance | |
17196 | or memory numbers show me otherwise. */ | |
17197 | ||
f1e6e072 | 17198 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 17199 | |
f1e6e072 | 17200 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 17201 | cu->has_loclist = 1; |
4c2df51b DJ |
17202 | } |
17203 | ||
c906108c SS |
17204 | /* Given a pointer to a DWARF information entry, figure out if we need |
17205 | to make a symbol table entry for it, and if so, create a new entry | |
17206 | and return a pointer to it. | |
17207 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
17208 | used the passed type. |
17209 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
17210 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
17211 | |
17212 | static struct symbol * | |
34eaf542 TT |
17213 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
17214 | struct symbol *space) | |
c906108c | 17215 | { |
e7c27a73 | 17216 | struct objfile *objfile = cu->objfile; |
c906108c | 17217 | struct symbol *sym = NULL; |
15d034d0 | 17218 | const char *name; |
c906108c SS |
17219 | struct attribute *attr = NULL; |
17220 | struct attribute *attr2 = NULL; | |
e142c38c | 17221 | CORE_ADDR baseaddr; |
e37fd15a SW |
17222 | struct pending **list_to_add = NULL; |
17223 | ||
edb3359d | 17224 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
17225 | |
17226 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 17227 | |
94af9270 | 17228 | name = dwarf2_name (die, cu); |
c906108c SS |
17229 | if (name) |
17230 | { | |
94af9270 | 17231 | const char *linkagename; |
34eaf542 | 17232 | int suppress_add = 0; |
94af9270 | 17233 | |
34eaf542 TT |
17234 | if (space) |
17235 | sym = space; | |
17236 | else | |
e623cf5d | 17237 | sym = allocate_symbol (objfile); |
c906108c | 17238 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
17239 | |
17240 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 17241 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
17242 | linkagename = dwarf2_physname (name, die, cu); |
17243 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 17244 | |
f55ee35c JK |
17245 | /* Fortran does not have mangling standard and the mangling does differ |
17246 | between gfortran, iFort etc. */ | |
17247 | if (cu->language == language_fortran | |
b250c185 | 17248 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 17249 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 17250 | dwarf2_full_name (name, die, cu), |
29df156d | 17251 | NULL); |
f55ee35c | 17252 | |
c906108c | 17253 | /* Default assumptions. |
c5aa993b | 17254 | Use the passed type or decode it from the die. */ |
176620f1 | 17255 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 17256 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
17257 | if (type != NULL) |
17258 | SYMBOL_TYPE (sym) = type; | |
17259 | else | |
e7c27a73 | 17260 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
17261 | attr = dwarf2_attr (die, |
17262 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
17263 | cu); | |
c906108c SS |
17264 | if (attr) |
17265 | { | |
17266 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
17267 | } | |
cb1df416 | 17268 | |
edb3359d DJ |
17269 | attr = dwarf2_attr (die, |
17270 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
17271 | cu); | |
cb1df416 DJ |
17272 | if (attr) |
17273 | { | |
17274 | int file_index = DW_UNSND (attr); | |
9a619af0 | 17275 | |
cb1df416 DJ |
17276 | if (cu->line_header == NULL |
17277 | || file_index > cu->line_header->num_file_names) | |
17278 | complaint (&symfile_complaints, | |
17279 | _("file index out of range")); | |
1c3d648d | 17280 | else if (file_index > 0) |
cb1df416 DJ |
17281 | { |
17282 | struct file_entry *fe; | |
9a619af0 | 17283 | |
cb1df416 DJ |
17284 | fe = &cu->line_header->file_names[file_index - 1]; |
17285 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
17286 | } | |
17287 | } | |
17288 | ||
c906108c SS |
17289 | switch (die->tag) |
17290 | { | |
17291 | case DW_TAG_label: | |
e142c38c | 17292 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
17293 | if (attr) |
17294 | { | |
17295 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
17296 | } | |
0f5238ed TT |
17297 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
17298 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 17299 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 17300 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
17301 | break; |
17302 | case DW_TAG_subprogram: | |
17303 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
17304 | finish_block. */ | |
f1e6e072 | 17305 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 17306 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
17307 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
17308 | || cu->language == language_ada) | |
c906108c | 17309 | { |
2cfa0c8d JB |
17310 | /* Subprograms marked external are stored as a global symbol. |
17311 | Ada subprograms, whether marked external or not, are always | |
17312 | stored as a global symbol, because we want to be able to | |
17313 | access them globally. For instance, we want to be able | |
17314 | to break on a nested subprogram without having to | |
17315 | specify the context. */ | |
e37fd15a | 17316 | list_to_add = &global_symbols; |
c906108c SS |
17317 | } |
17318 | else | |
17319 | { | |
e37fd15a | 17320 | list_to_add = cu->list_in_scope; |
c906108c SS |
17321 | } |
17322 | break; | |
edb3359d DJ |
17323 | case DW_TAG_inlined_subroutine: |
17324 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
17325 | finish_block. */ | |
f1e6e072 | 17326 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 17327 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 17328 | list_to_add = cu->list_in_scope; |
edb3359d | 17329 | break; |
34eaf542 TT |
17330 | case DW_TAG_template_value_param: |
17331 | suppress_add = 1; | |
17332 | /* Fall through. */ | |
72929c62 | 17333 | case DW_TAG_constant: |
c906108c | 17334 | case DW_TAG_variable: |
254e6b9e | 17335 | case DW_TAG_member: |
0963b4bd MS |
17336 | /* Compilation with minimal debug info may result in |
17337 | variables with missing type entries. Change the | |
17338 | misleading `void' type to something sensible. */ | |
c906108c | 17339 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 17340 | SYMBOL_TYPE (sym) |
46bf5051 | 17341 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 17342 | |
e142c38c | 17343 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
17344 | /* In the case of DW_TAG_member, we should only be called for |
17345 | static const members. */ | |
17346 | if (die->tag == DW_TAG_member) | |
17347 | { | |
3863f96c DE |
17348 | /* dwarf2_add_field uses die_is_declaration, |
17349 | so we do the same. */ | |
254e6b9e DE |
17350 | gdb_assert (die_is_declaration (die, cu)); |
17351 | gdb_assert (attr); | |
17352 | } | |
c906108c SS |
17353 | if (attr) |
17354 | { | |
e7c27a73 | 17355 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 17356 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 17357 | if (!suppress_add) |
34eaf542 TT |
17358 | { |
17359 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 17360 | list_to_add = &global_symbols; |
34eaf542 | 17361 | else |
e37fd15a | 17362 | list_to_add = cu->list_in_scope; |
34eaf542 | 17363 | } |
c906108c SS |
17364 | break; |
17365 | } | |
e142c38c | 17366 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
17367 | if (attr) |
17368 | { | |
e7c27a73 | 17369 | var_decode_location (attr, sym, cu); |
e142c38c | 17370 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
17371 | |
17372 | /* Fortran explicitly imports any global symbols to the local | |
17373 | scope by DW_TAG_common_block. */ | |
17374 | if (cu->language == language_fortran && die->parent | |
17375 | && die->parent->tag == DW_TAG_common_block) | |
17376 | attr2 = NULL; | |
17377 | ||
caac4577 JG |
17378 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
17379 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
17380 | && !dwarf2_per_objfile->has_section_at_zero) | |
17381 | { | |
17382 | /* When a static variable is eliminated by the linker, | |
17383 | the corresponding debug information is not stripped | |
17384 | out, but the variable address is set to null; | |
17385 | do not add such variables into symbol table. */ | |
17386 | } | |
17387 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 17388 | { |
f55ee35c JK |
17389 | /* Workaround gfortran PR debug/40040 - it uses |
17390 | DW_AT_location for variables in -fPIC libraries which may | |
17391 | get overriden by other libraries/executable and get | |
17392 | a different address. Resolve it by the minimal symbol | |
17393 | which may come from inferior's executable using copy | |
17394 | relocation. Make this workaround only for gfortran as for | |
17395 | other compilers GDB cannot guess the minimal symbol | |
17396 | Fortran mangling kind. */ | |
17397 | if (cu->language == language_fortran && die->parent | |
17398 | && die->parent->tag == DW_TAG_module | |
17399 | && cu->producer | |
17400 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
f1e6e072 | 17401 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 17402 | |
1c809c68 TT |
17403 | /* A variable with DW_AT_external is never static, |
17404 | but it may be block-scoped. */ | |
17405 | list_to_add = (cu->list_in_scope == &file_symbols | |
17406 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 17407 | } |
c906108c | 17408 | else |
e37fd15a | 17409 | list_to_add = cu->list_in_scope; |
c906108c SS |
17410 | } |
17411 | else | |
17412 | { | |
17413 | /* We do not know the address of this symbol. | |
c5aa993b JM |
17414 | If it is an external symbol and we have type information |
17415 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
17416 | The address of the variable will then be determined from | |
17417 | the minimal symbol table whenever the variable is | |
17418 | referenced. */ | |
e142c38c | 17419 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
17420 | |
17421 | /* Fortran explicitly imports any global symbols to the local | |
17422 | scope by DW_TAG_common_block. */ | |
17423 | if (cu->language == language_fortran && die->parent | |
17424 | && die->parent->tag == DW_TAG_common_block) | |
17425 | { | |
17426 | /* SYMBOL_CLASS doesn't matter here because | |
17427 | read_common_block is going to reset it. */ | |
17428 | if (!suppress_add) | |
17429 | list_to_add = cu->list_in_scope; | |
17430 | } | |
17431 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
17432 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 17433 | { |
0fe7935b DJ |
17434 | /* A variable with DW_AT_external is never static, but it |
17435 | may be block-scoped. */ | |
17436 | list_to_add = (cu->list_in_scope == &file_symbols | |
17437 | ? &global_symbols : cu->list_in_scope); | |
17438 | ||
f1e6e072 | 17439 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 17440 | } |
442ddf59 JK |
17441 | else if (!die_is_declaration (die, cu)) |
17442 | { | |
17443 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
17444 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
17445 | if (!suppress_add) |
17446 | list_to_add = cu->list_in_scope; | |
442ddf59 | 17447 | } |
c906108c SS |
17448 | } |
17449 | break; | |
17450 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
17451 | /* If we are inside a function, mark this as an argument. If |
17452 | not, we might be looking at an argument to an inlined function | |
17453 | when we do not have enough information to show inlined frames; | |
17454 | pretend it's a local variable in that case so that the user can | |
17455 | still see it. */ | |
17456 | if (context_stack_depth > 0 | |
17457 | && context_stack[context_stack_depth - 1].name != NULL) | |
17458 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 17459 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
17460 | if (attr) |
17461 | { | |
e7c27a73 | 17462 | var_decode_location (attr, sym, cu); |
c906108c | 17463 | } |
e142c38c | 17464 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
17465 | if (attr) |
17466 | { | |
e7c27a73 | 17467 | dwarf2_const_value (attr, sym, cu); |
c906108c | 17468 | } |
f346a30d | 17469 | |
e37fd15a | 17470 | list_to_add = cu->list_in_scope; |
c906108c SS |
17471 | break; |
17472 | case DW_TAG_unspecified_parameters: | |
17473 | /* From varargs functions; gdb doesn't seem to have any | |
17474 | interest in this information, so just ignore it for now. | |
17475 | (FIXME?) */ | |
17476 | break; | |
34eaf542 TT |
17477 | case DW_TAG_template_type_param: |
17478 | suppress_add = 1; | |
17479 | /* Fall through. */ | |
c906108c | 17480 | case DW_TAG_class_type: |
680b30c7 | 17481 | case DW_TAG_interface_type: |
c906108c SS |
17482 | case DW_TAG_structure_type: |
17483 | case DW_TAG_union_type: | |
72019c9c | 17484 | case DW_TAG_set_type: |
c906108c | 17485 | case DW_TAG_enumeration_type: |
f1e6e072 | 17486 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 17487 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 17488 | |
63d06c5c | 17489 | { |
987504bb | 17490 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
17491 | really ever be static objects: otherwise, if you try |
17492 | to, say, break of a class's method and you're in a file | |
17493 | which doesn't mention that class, it won't work unless | |
17494 | the check for all static symbols in lookup_symbol_aux | |
17495 | saves you. See the OtherFileClass tests in | |
17496 | gdb.c++/namespace.exp. */ | |
17497 | ||
e37fd15a | 17498 | if (!suppress_add) |
34eaf542 | 17499 | { |
34eaf542 TT |
17500 | list_to_add = (cu->list_in_scope == &file_symbols |
17501 | && (cu->language == language_cplus | |
17502 | || cu->language == language_java) | |
17503 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 17504 | |
64382290 TT |
17505 | /* The semantics of C++ state that "struct foo { |
17506 | ... }" also defines a typedef for "foo". A Java | |
17507 | class declaration also defines a typedef for the | |
17508 | class. */ | |
17509 | if (cu->language == language_cplus | |
17510 | || cu->language == language_java | |
17511 | || cu->language == language_ada) | |
17512 | { | |
17513 | /* The symbol's name is already allocated along | |
17514 | with this objfile, so we don't need to | |
17515 | duplicate it for the type. */ | |
17516 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
17517 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
17518 | } | |
63d06c5c DC |
17519 | } |
17520 | } | |
c906108c SS |
17521 | break; |
17522 | case DW_TAG_typedef: | |
f1e6e072 | 17523 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 17524 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 17525 | list_to_add = cu->list_in_scope; |
63d06c5c | 17526 | break; |
c906108c | 17527 | case DW_TAG_base_type: |
a02abb62 | 17528 | case DW_TAG_subrange_type: |
f1e6e072 | 17529 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 17530 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 17531 | list_to_add = cu->list_in_scope; |
c906108c SS |
17532 | break; |
17533 | case DW_TAG_enumerator: | |
e142c38c | 17534 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
17535 | if (attr) |
17536 | { | |
e7c27a73 | 17537 | dwarf2_const_value (attr, sym, cu); |
c906108c | 17538 | } |
63d06c5c DC |
17539 | { |
17540 | /* NOTE: carlton/2003-11-10: See comment above in the | |
17541 | DW_TAG_class_type, etc. block. */ | |
17542 | ||
e142c38c | 17543 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
17544 | && (cu->language == language_cplus |
17545 | || cu->language == language_java) | |
e142c38c | 17546 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 17547 | } |
c906108c | 17548 | break; |
5c4e30ca | 17549 | case DW_TAG_namespace: |
f1e6e072 | 17550 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 17551 | list_to_add = &global_symbols; |
5c4e30ca | 17552 | break; |
4357ac6c | 17553 | case DW_TAG_common_block: |
f1e6e072 | 17554 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
17555 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
17556 | add_symbol_to_list (sym, cu->list_in_scope); | |
17557 | break; | |
c906108c SS |
17558 | default: |
17559 | /* Not a tag we recognize. Hopefully we aren't processing | |
17560 | trash data, but since we must specifically ignore things | |
17561 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 17562 | this point. */ |
e2e0b3e5 | 17563 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 17564 | dwarf_tag_name (die->tag)); |
c906108c SS |
17565 | break; |
17566 | } | |
df8a16a1 | 17567 | |
e37fd15a SW |
17568 | if (suppress_add) |
17569 | { | |
17570 | sym->hash_next = objfile->template_symbols; | |
17571 | objfile->template_symbols = sym; | |
17572 | list_to_add = NULL; | |
17573 | } | |
17574 | ||
17575 | if (list_to_add != NULL) | |
17576 | add_symbol_to_list (sym, list_to_add); | |
17577 | ||
df8a16a1 DJ |
17578 | /* For the benefit of old versions of GCC, check for anonymous |
17579 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 17580 | if (!cu->processing_has_namespace_info |
94af9270 | 17581 | && cu->language == language_cplus) |
a10964d1 | 17582 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
17583 | } |
17584 | return (sym); | |
17585 | } | |
17586 | ||
34eaf542 TT |
17587 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
17588 | ||
17589 | static struct symbol * | |
17590 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
17591 | { | |
17592 | return new_symbol_full (die, type, cu, NULL); | |
17593 | } | |
17594 | ||
98bfdba5 PA |
17595 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
17596 | zero-extend it as appropriate for the symbol's type. The DWARF | |
17597 | standard (v4) is not entirely clear about the meaning of using | |
17598 | DW_FORM_dataN for a constant with a signed type, where the type is | |
17599 | wider than the data. The conclusion of a discussion on the DWARF | |
17600 | list was that this is unspecified. We choose to always zero-extend | |
17601 | because that is the interpretation long in use by GCC. */ | |
c906108c | 17602 | |
98bfdba5 | 17603 | static gdb_byte * |
ff39bb5e | 17604 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 17605 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 17606 | { |
e7c27a73 | 17607 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
17608 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
17609 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
17610 | LONGEST l = DW_UNSND (attr); |
17611 | ||
17612 | if (bits < sizeof (*value) * 8) | |
17613 | { | |
17614 | l &= ((LONGEST) 1 << bits) - 1; | |
17615 | *value = l; | |
17616 | } | |
17617 | else if (bits == sizeof (*value) * 8) | |
17618 | *value = l; | |
17619 | else | |
17620 | { | |
17621 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
17622 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
17623 | return bytes; | |
17624 | } | |
17625 | ||
17626 | return NULL; | |
17627 | } | |
17628 | ||
17629 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
17630 | the value does not fit in *VALUE, set *BYTES - either already | |
17631 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
17632 | or, set *BATON, if we translated the constant to a location | |
17633 | expression. */ | |
17634 | ||
17635 | static void | |
ff39bb5e | 17636 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
17637 | const char *name, struct obstack *obstack, |
17638 | struct dwarf2_cu *cu, | |
d521ce57 | 17639 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
17640 | struct dwarf2_locexpr_baton **baton) |
17641 | { | |
17642 | struct objfile *objfile = cu->objfile; | |
17643 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 17644 | struct dwarf_block *blk; |
98bfdba5 PA |
17645 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
17646 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
17647 | ||
17648 | *value = 0; | |
17649 | *bytes = NULL; | |
17650 | *baton = NULL; | |
c906108c SS |
17651 | |
17652 | switch (attr->form) | |
17653 | { | |
17654 | case DW_FORM_addr: | |
3019eac3 | 17655 | case DW_FORM_GNU_addr_index: |
ac56253d | 17656 | { |
ac56253d TT |
17657 | gdb_byte *data; |
17658 | ||
98bfdba5 PA |
17659 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
17660 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 17661 | cu_header->addr_size, |
98bfdba5 | 17662 | TYPE_LENGTH (type)); |
ac56253d TT |
17663 | /* Symbols of this form are reasonably rare, so we just |
17664 | piggyback on the existing location code rather than writing | |
17665 | a new implementation of symbol_computed_ops. */ | |
7919a973 | 17666 | *baton = obstack_alloc (obstack, sizeof (struct dwarf2_locexpr_baton)); |
98bfdba5 PA |
17667 | (*baton)->per_cu = cu->per_cu; |
17668 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 17669 | |
98bfdba5 | 17670 | (*baton)->size = 2 + cu_header->addr_size; |
7919a973 | 17671 | data = obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 17672 | (*baton)->data = data; |
ac56253d TT |
17673 | |
17674 | data[0] = DW_OP_addr; | |
17675 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
17676 | byte_order, DW_ADDR (attr)); | |
17677 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 17678 | } |
c906108c | 17679 | break; |
4ac36638 | 17680 | case DW_FORM_string: |
93b5768b | 17681 | case DW_FORM_strp: |
3019eac3 | 17682 | case DW_FORM_GNU_str_index: |
36586728 | 17683 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
17684 | /* DW_STRING is already allocated on the objfile obstack, point |
17685 | directly to it. */ | |
d521ce57 | 17686 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 17687 | break; |
c906108c SS |
17688 | case DW_FORM_block1: |
17689 | case DW_FORM_block2: | |
17690 | case DW_FORM_block4: | |
17691 | case DW_FORM_block: | |
2dc7f7b3 | 17692 | case DW_FORM_exprloc: |
c906108c | 17693 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
17694 | if (TYPE_LENGTH (type) != blk->size) |
17695 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
17696 | TYPE_LENGTH (type)); | |
17697 | *bytes = blk->data; | |
c906108c | 17698 | break; |
2df3850c JM |
17699 | |
17700 | /* The DW_AT_const_value attributes are supposed to carry the | |
17701 | symbol's value "represented as it would be on the target | |
17702 | architecture." By the time we get here, it's already been | |
17703 | converted to host endianness, so we just need to sign- or | |
17704 | zero-extend it as appropriate. */ | |
17705 | case DW_FORM_data1: | |
3aef2284 | 17706 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 17707 | break; |
c906108c | 17708 | case DW_FORM_data2: |
3aef2284 | 17709 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 17710 | break; |
c906108c | 17711 | case DW_FORM_data4: |
3aef2284 | 17712 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 17713 | break; |
c906108c | 17714 | case DW_FORM_data8: |
3aef2284 | 17715 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
17716 | break; |
17717 | ||
c906108c | 17718 | case DW_FORM_sdata: |
98bfdba5 | 17719 | *value = DW_SND (attr); |
2df3850c JM |
17720 | break; |
17721 | ||
c906108c | 17722 | case DW_FORM_udata: |
98bfdba5 | 17723 | *value = DW_UNSND (attr); |
c906108c | 17724 | break; |
2df3850c | 17725 | |
c906108c | 17726 | default: |
4d3c2250 | 17727 | complaint (&symfile_complaints, |
e2e0b3e5 | 17728 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 17729 | dwarf_form_name (attr->form)); |
98bfdba5 | 17730 | *value = 0; |
c906108c SS |
17731 | break; |
17732 | } | |
17733 | } | |
17734 | ||
2df3850c | 17735 | |
98bfdba5 PA |
17736 | /* Copy constant value from an attribute to a symbol. */ |
17737 | ||
2df3850c | 17738 | static void |
ff39bb5e | 17739 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 17740 | struct dwarf2_cu *cu) |
2df3850c | 17741 | { |
98bfdba5 PA |
17742 | struct objfile *objfile = cu->objfile; |
17743 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 17744 | LONGEST value; |
d521ce57 | 17745 | const gdb_byte *bytes; |
98bfdba5 | 17746 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 17747 | |
98bfdba5 PA |
17748 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
17749 | SYMBOL_PRINT_NAME (sym), | |
17750 | &objfile->objfile_obstack, cu, | |
17751 | &value, &bytes, &baton); | |
2df3850c | 17752 | |
98bfdba5 PA |
17753 | if (baton != NULL) |
17754 | { | |
98bfdba5 | 17755 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17756 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
17757 | } |
17758 | else if (bytes != NULL) | |
17759 | { | |
17760 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 17761 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
17762 | } |
17763 | else | |
17764 | { | |
17765 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 17766 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 17767 | } |
2df3850c JM |
17768 | } |
17769 | ||
c906108c SS |
17770 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
17771 | ||
17772 | static struct type * | |
e7c27a73 | 17773 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17774 | { |
c906108c | 17775 | struct attribute *type_attr; |
c906108c | 17776 | |
e142c38c | 17777 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
17778 | if (!type_attr) |
17779 | { | |
17780 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 17781 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 17782 | } |
348e048f | 17783 | |
673bfd45 | 17784 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
17785 | } |
17786 | ||
b4ba55a1 JB |
17787 | /* True iff CU's producer generates GNAT Ada auxiliary information |
17788 | that allows to find parallel types through that information instead | |
17789 | of having to do expensive parallel lookups by type name. */ | |
17790 | ||
17791 | static int | |
17792 | need_gnat_info (struct dwarf2_cu *cu) | |
17793 | { | |
17794 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
17795 | of GNAT produces this auxiliary information, without any indication | |
17796 | that it is produced. Part of enhancing the FSF version of GNAT | |
17797 | to produce that information will be to put in place an indicator | |
17798 | that we can use in order to determine whether the descriptive type | |
17799 | info is available or not. One suggestion that has been made is | |
17800 | to use a new attribute, attached to the CU die. For now, assume | |
17801 | that the descriptive type info is not available. */ | |
17802 | return 0; | |
17803 | } | |
17804 | ||
b4ba55a1 JB |
17805 | /* Return the auxiliary type of the die in question using its |
17806 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
17807 | attribute is not present. */ | |
17808 | ||
17809 | static struct type * | |
17810 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
17811 | { | |
b4ba55a1 | 17812 | struct attribute *type_attr; |
b4ba55a1 JB |
17813 | |
17814 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
17815 | if (!type_attr) | |
17816 | return NULL; | |
17817 | ||
673bfd45 | 17818 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
17819 | } |
17820 | ||
17821 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
17822 | descriptive type accordingly. */ | |
17823 | ||
17824 | static void | |
17825 | set_descriptive_type (struct type *type, struct die_info *die, | |
17826 | struct dwarf2_cu *cu) | |
17827 | { | |
17828 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
17829 | ||
17830 | if (descriptive_type) | |
17831 | { | |
17832 | ALLOCATE_GNAT_AUX_TYPE (type); | |
17833 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
17834 | } | |
17835 | } | |
17836 | ||
c906108c SS |
17837 | /* Return the containing type of the die in question using its |
17838 | DW_AT_containing_type attribute. */ | |
17839 | ||
17840 | static struct type * | |
e7c27a73 | 17841 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17842 | { |
c906108c | 17843 | struct attribute *type_attr; |
c906108c | 17844 | |
e142c38c | 17845 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
17846 | if (!type_attr) |
17847 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 17848 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 17849 | |
673bfd45 | 17850 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
17851 | } |
17852 | ||
ac9ec31b DE |
17853 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
17854 | ||
17855 | static struct type * | |
17856 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
17857 | { | |
17858 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
17859 | char *message, *saved; | |
17860 | ||
17861 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 17862 | objfile_name (objfile), |
ac9ec31b DE |
17863 | cu->header.offset.sect_off, |
17864 | die->offset.sect_off); | |
17865 | saved = obstack_copy0 (&objfile->objfile_obstack, | |
17866 | message, strlen (message)); | |
17867 | xfree (message); | |
17868 | ||
17869 | return init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); | |
17870 | } | |
17871 | ||
673bfd45 | 17872 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
17873 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
17874 | DW_AT_containing_type. | |
673bfd45 DE |
17875 | If there is no type substitute an error marker. */ |
17876 | ||
c906108c | 17877 | static struct type * |
ff39bb5e | 17878 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 17879 | struct dwarf2_cu *cu) |
c906108c | 17880 | { |
bb5ed363 | 17881 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
17882 | struct type *this_type; |
17883 | ||
ac9ec31b DE |
17884 | gdb_assert (attr->name == DW_AT_type |
17885 | || attr->name == DW_AT_GNAT_descriptive_type | |
17886 | || attr->name == DW_AT_containing_type); | |
17887 | ||
673bfd45 DE |
17888 | /* First see if we have it cached. */ |
17889 | ||
36586728 TT |
17890 | if (attr->form == DW_FORM_GNU_ref_alt) |
17891 | { | |
17892 | struct dwarf2_per_cu_data *per_cu; | |
17893 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
17894 | ||
17895 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
17896 | this_type = get_die_type_at_offset (offset, per_cu); | |
17897 | } | |
7771576e | 17898 | else if (attr_form_is_ref (attr)) |
673bfd45 | 17899 | { |
b64f50a1 | 17900 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
17901 | |
17902 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
17903 | } | |
55f1336d | 17904 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 17905 | { |
ac9ec31b | 17906 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 17907 | |
ac9ec31b | 17908 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
17909 | } |
17910 | else | |
17911 | { | |
ac9ec31b DE |
17912 | complaint (&symfile_complaints, |
17913 | _("Dwarf Error: Bad type attribute %s in DIE" | |
17914 | " at 0x%x [in module %s]"), | |
17915 | dwarf_attr_name (attr->name), die->offset.sect_off, | |
4262abfb | 17916 | objfile_name (objfile)); |
ac9ec31b | 17917 | return build_error_marker_type (cu, die); |
673bfd45 DE |
17918 | } |
17919 | ||
17920 | /* If not cached we need to read it in. */ | |
17921 | ||
17922 | if (this_type == NULL) | |
17923 | { | |
ac9ec31b | 17924 | struct die_info *type_die = NULL; |
673bfd45 DE |
17925 | struct dwarf2_cu *type_cu = cu; |
17926 | ||
7771576e | 17927 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
17928 | type_die = follow_die_ref (die, attr, &type_cu); |
17929 | if (type_die == NULL) | |
17930 | return build_error_marker_type (cu, die); | |
17931 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
17932 | from an inter-CU reference and the type's CU got expanded before |
17933 | ours. */ | |
ac9ec31b | 17934 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
17935 | } |
17936 | ||
17937 | /* If we still don't have a type use an error marker. */ | |
17938 | ||
17939 | if (this_type == NULL) | |
ac9ec31b | 17940 | return build_error_marker_type (cu, die); |
673bfd45 | 17941 | |
f792889a | 17942 | return this_type; |
c906108c SS |
17943 | } |
17944 | ||
673bfd45 DE |
17945 | /* Return the type in DIE, CU. |
17946 | Returns NULL for invalid types. | |
17947 | ||
02142a6c | 17948 | This first does a lookup in die_type_hash, |
673bfd45 DE |
17949 | and only reads the die in if necessary. |
17950 | ||
17951 | NOTE: This can be called when reading in partial or full symbols. */ | |
17952 | ||
f792889a | 17953 | static struct type * |
e7c27a73 | 17954 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17955 | { |
f792889a DJ |
17956 | struct type *this_type; |
17957 | ||
17958 | this_type = get_die_type (die, cu); | |
17959 | if (this_type) | |
17960 | return this_type; | |
17961 | ||
673bfd45 DE |
17962 | return read_type_die_1 (die, cu); |
17963 | } | |
17964 | ||
17965 | /* Read the type in DIE, CU. | |
17966 | Returns NULL for invalid types. */ | |
17967 | ||
17968 | static struct type * | |
17969 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
17970 | { | |
17971 | struct type *this_type = NULL; | |
17972 | ||
c906108c SS |
17973 | switch (die->tag) |
17974 | { | |
17975 | case DW_TAG_class_type: | |
680b30c7 | 17976 | case DW_TAG_interface_type: |
c906108c SS |
17977 | case DW_TAG_structure_type: |
17978 | case DW_TAG_union_type: | |
f792889a | 17979 | this_type = read_structure_type (die, cu); |
c906108c SS |
17980 | break; |
17981 | case DW_TAG_enumeration_type: | |
f792889a | 17982 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
17983 | break; |
17984 | case DW_TAG_subprogram: | |
17985 | case DW_TAG_subroutine_type: | |
edb3359d | 17986 | case DW_TAG_inlined_subroutine: |
f792889a | 17987 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
17988 | break; |
17989 | case DW_TAG_array_type: | |
f792889a | 17990 | this_type = read_array_type (die, cu); |
c906108c | 17991 | break; |
72019c9c | 17992 | case DW_TAG_set_type: |
f792889a | 17993 | this_type = read_set_type (die, cu); |
72019c9c | 17994 | break; |
c906108c | 17995 | case DW_TAG_pointer_type: |
f792889a | 17996 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
17997 | break; |
17998 | case DW_TAG_ptr_to_member_type: | |
f792889a | 17999 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
18000 | break; |
18001 | case DW_TAG_reference_type: | |
f792889a | 18002 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
18003 | break; |
18004 | case DW_TAG_const_type: | |
f792889a | 18005 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
18006 | break; |
18007 | case DW_TAG_volatile_type: | |
f792889a | 18008 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 18009 | break; |
06d66ee9 TT |
18010 | case DW_TAG_restrict_type: |
18011 | this_type = read_tag_restrict_type (die, cu); | |
18012 | break; | |
c906108c | 18013 | case DW_TAG_string_type: |
f792889a | 18014 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
18015 | break; |
18016 | case DW_TAG_typedef: | |
f792889a | 18017 | this_type = read_typedef (die, cu); |
c906108c | 18018 | break; |
a02abb62 | 18019 | case DW_TAG_subrange_type: |
f792889a | 18020 | this_type = read_subrange_type (die, cu); |
a02abb62 | 18021 | break; |
c906108c | 18022 | case DW_TAG_base_type: |
f792889a | 18023 | this_type = read_base_type (die, cu); |
c906108c | 18024 | break; |
81a17f79 | 18025 | case DW_TAG_unspecified_type: |
f792889a | 18026 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 18027 | break; |
0114d602 DJ |
18028 | case DW_TAG_namespace: |
18029 | this_type = read_namespace_type (die, cu); | |
18030 | break; | |
f55ee35c JK |
18031 | case DW_TAG_module: |
18032 | this_type = read_module_type (die, cu); | |
18033 | break; | |
c906108c | 18034 | default: |
3e43a32a MS |
18035 | complaint (&symfile_complaints, |
18036 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 18037 | dwarf_tag_name (die->tag)); |
c906108c SS |
18038 | break; |
18039 | } | |
63d06c5c | 18040 | |
f792889a | 18041 | return this_type; |
63d06c5c DC |
18042 | } |
18043 | ||
abc72ce4 DE |
18044 | /* See if we can figure out if the class lives in a namespace. We do |
18045 | this by looking for a member function; its demangled name will | |
18046 | contain namespace info, if there is any. | |
18047 | Return the computed name or NULL. | |
18048 | Space for the result is allocated on the objfile's obstack. | |
18049 | This is the full-die version of guess_partial_die_structure_name. | |
18050 | In this case we know DIE has no useful parent. */ | |
18051 | ||
18052 | static char * | |
18053 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
18054 | { | |
18055 | struct die_info *spec_die; | |
18056 | struct dwarf2_cu *spec_cu; | |
18057 | struct die_info *child; | |
18058 | ||
18059 | spec_cu = cu; | |
18060 | spec_die = die_specification (die, &spec_cu); | |
18061 | if (spec_die != NULL) | |
18062 | { | |
18063 | die = spec_die; | |
18064 | cu = spec_cu; | |
18065 | } | |
18066 | ||
18067 | for (child = die->child; | |
18068 | child != NULL; | |
18069 | child = child->sibling) | |
18070 | { | |
18071 | if (child->tag == DW_TAG_subprogram) | |
18072 | { | |
18073 | struct attribute *attr; | |
18074 | ||
18075 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
18076 | if (attr == NULL) | |
18077 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
18078 | if (attr != NULL) | |
18079 | { | |
18080 | char *actual_name | |
18081 | = language_class_name_from_physname (cu->language_defn, | |
18082 | DW_STRING (attr)); | |
18083 | char *name = NULL; | |
18084 | ||
18085 | if (actual_name != NULL) | |
18086 | { | |
15d034d0 | 18087 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
18088 | |
18089 | if (die_name != NULL | |
18090 | && strcmp (die_name, actual_name) != 0) | |
18091 | { | |
18092 | /* Strip off the class name from the full name. | |
18093 | We want the prefix. */ | |
18094 | int die_name_len = strlen (die_name); | |
18095 | int actual_name_len = strlen (actual_name); | |
18096 | ||
18097 | /* Test for '::' as a sanity check. */ | |
18098 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
18099 | && actual_name[actual_name_len |
18100 | - die_name_len - 1] == ':') | |
abc72ce4 | 18101 | name = |
10f0c4bb TT |
18102 | obstack_copy0 (&cu->objfile->objfile_obstack, |
18103 | actual_name, | |
18104 | actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
18105 | } |
18106 | } | |
18107 | xfree (actual_name); | |
18108 | return name; | |
18109 | } | |
18110 | } | |
18111 | } | |
18112 | ||
18113 | return NULL; | |
18114 | } | |
18115 | ||
96408a79 SA |
18116 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
18117 | prefix part in such case. See | |
18118 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
18119 | ||
18120 | static char * | |
18121 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
18122 | { | |
18123 | struct attribute *attr; | |
18124 | char *base; | |
18125 | ||
18126 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
18127 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
18128 | return NULL; | |
18129 | ||
18130 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
18131 | if (attr != NULL && DW_STRING (attr) != NULL) | |
18132 | return NULL; | |
18133 | ||
18134 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
18135 | if (attr == NULL) | |
18136 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
18137 | if (attr == NULL || DW_STRING (attr) == NULL) | |
18138 | return NULL; | |
18139 | ||
18140 | /* dwarf2_name had to be already called. */ | |
18141 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
18142 | ||
18143 | /* Strip the base name, keep any leading namespaces/classes. */ | |
18144 | base = strrchr (DW_STRING (attr), ':'); | |
18145 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
18146 | return ""; | |
18147 | ||
10f0c4bb TT |
18148 | return obstack_copy0 (&cu->objfile->objfile_obstack, |
18149 | DW_STRING (attr), &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
18150 | } |
18151 | ||
fdde2d81 | 18152 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 18153 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 18154 | |
0114d602 DJ |
18155 | For example, if we're within the method foo() in the following |
18156 | code: | |
18157 | ||
18158 | namespace N { | |
18159 | class C { | |
18160 | void foo () { | |
18161 | } | |
18162 | }; | |
18163 | } | |
18164 | ||
18165 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 18166 | |
0d5cff50 | 18167 | static const char * |
e142c38c | 18168 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 18169 | { |
0114d602 DJ |
18170 | struct die_info *parent, *spec_die; |
18171 | struct dwarf2_cu *spec_cu; | |
18172 | struct type *parent_type; | |
96408a79 | 18173 | char *retval; |
63d06c5c | 18174 | |
f55ee35c JK |
18175 | if (cu->language != language_cplus && cu->language != language_java |
18176 | && cu->language != language_fortran) | |
0114d602 DJ |
18177 | return ""; |
18178 | ||
96408a79 SA |
18179 | retval = anonymous_struct_prefix (die, cu); |
18180 | if (retval) | |
18181 | return retval; | |
18182 | ||
0114d602 DJ |
18183 | /* We have to be careful in the presence of DW_AT_specification. |
18184 | For example, with GCC 3.4, given the code | |
18185 | ||
18186 | namespace N { | |
18187 | void foo() { | |
18188 | // Definition of N::foo. | |
18189 | } | |
18190 | } | |
18191 | ||
18192 | then we'll have a tree of DIEs like this: | |
18193 | ||
18194 | 1: DW_TAG_compile_unit | |
18195 | 2: DW_TAG_namespace // N | |
18196 | 3: DW_TAG_subprogram // declaration of N::foo | |
18197 | 4: DW_TAG_subprogram // definition of N::foo | |
18198 | DW_AT_specification // refers to die #3 | |
18199 | ||
18200 | Thus, when processing die #4, we have to pretend that we're in | |
18201 | the context of its DW_AT_specification, namely the contex of die | |
18202 | #3. */ | |
18203 | spec_cu = cu; | |
18204 | spec_die = die_specification (die, &spec_cu); | |
18205 | if (spec_die == NULL) | |
18206 | parent = die->parent; | |
18207 | else | |
63d06c5c | 18208 | { |
0114d602 DJ |
18209 | parent = spec_die->parent; |
18210 | cu = spec_cu; | |
63d06c5c | 18211 | } |
0114d602 DJ |
18212 | |
18213 | if (parent == NULL) | |
18214 | return ""; | |
98bfdba5 PA |
18215 | else if (parent->building_fullname) |
18216 | { | |
18217 | const char *name; | |
18218 | const char *parent_name; | |
18219 | ||
18220 | /* It has been seen on RealView 2.2 built binaries, | |
18221 | DW_TAG_template_type_param types actually _defined_ as | |
18222 | children of the parent class: | |
18223 | ||
18224 | enum E {}; | |
18225 | template class <class Enum> Class{}; | |
18226 | Class<enum E> class_e; | |
18227 | ||
18228 | 1: DW_TAG_class_type (Class) | |
18229 | 2: DW_TAG_enumeration_type (E) | |
18230 | 3: DW_TAG_enumerator (enum1:0) | |
18231 | 3: DW_TAG_enumerator (enum2:1) | |
18232 | ... | |
18233 | 2: DW_TAG_template_type_param | |
18234 | DW_AT_type DW_FORM_ref_udata (E) | |
18235 | ||
18236 | Besides being broken debug info, it can put GDB into an | |
18237 | infinite loop. Consider: | |
18238 | ||
18239 | When we're building the full name for Class<E>, we'll start | |
18240 | at Class, and go look over its template type parameters, | |
18241 | finding E. We'll then try to build the full name of E, and | |
18242 | reach here. We're now trying to build the full name of E, | |
18243 | and look over the parent DIE for containing scope. In the | |
18244 | broken case, if we followed the parent DIE of E, we'd again | |
18245 | find Class, and once again go look at its template type | |
18246 | arguments, etc., etc. Simply don't consider such parent die | |
18247 | as source-level parent of this die (it can't be, the language | |
18248 | doesn't allow it), and break the loop here. */ | |
18249 | name = dwarf2_name (die, cu); | |
18250 | parent_name = dwarf2_name (parent, cu); | |
18251 | complaint (&symfile_complaints, | |
18252 | _("template param type '%s' defined within parent '%s'"), | |
18253 | name ? name : "<unknown>", | |
18254 | parent_name ? parent_name : "<unknown>"); | |
18255 | return ""; | |
18256 | } | |
63d06c5c | 18257 | else |
0114d602 DJ |
18258 | switch (parent->tag) |
18259 | { | |
63d06c5c | 18260 | case DW_TAG_namespace: |
0114d602 | 18261 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
18262 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
18263 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
18264 | Work around this problem here. */ | |
18265 | if (cu->language == language_cplus | |
18266 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
18267 | return ""; | |
0114d602 DJ |
18268 | /* We give a name to even anonymous namespaces. */ |
18269 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 18270 | case DW_TAG_class_type: |
680b30c7 | 18271 | case DW_TAG_interface_type: |
63d06c5c | 18272 | case DW_TAG_structure_type: |
0114d602 | 18273 | case DW_TAG_union_type: |
f55ee35c | 18274 | case DW_TAG_module: |
0114d602 DJ |
18275 | parent_type = read_type_die (parent, cu); |
18276 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
18277 | return TYPE_TAG_NAME (parent_type); | |
18278 | else | |
18279 | /* An anonymous structure is only allowed non-static data | |
18280 | members; no typedefs, no member functions, et cetera. | |
18281 | So it does not need a prefix. */ | |
18282 | return ""; | |
abc72ce4 | 18283 | case DW_TAG_compile_unit: |
95554aad | 18284 | case DW_TAG_partial_unit: |
abc72ce4 DE |
18285 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
18286 | if (cu->language == language_cplus | |
8b70b953 | 18287 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
18288 | && die->child != NULL |
18289 | && (die->tag == DW_TAG_class_type | |
18290 | || die->tag == DW_TAG_structure_type | |
18291 | || die->tag == DW_TAG_union_type)) | |
18292 | { | |
18293 | char *name = guess_full_die_structure_name (die, cu); | |
18294 | if (name != NULL) | |
18295 | return name; | |
18296 | } | |
18297 | return ""; | |
63d06c5c | 18298 | default: |
8176b9b8 | 18299 | return determine_prefix (parent, cu); |
63d06c5c | 18300 | } |
63d06c5c DC |
18301 | } |
18302 | ||
3e43a32a MS |
18303 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
18304 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
18305 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
18306 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
18307 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 18308 | |
f55ee35c | 18309 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
18310 | |
18311 | static char * | |
f55ee35c JK |
18312 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
18313 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 18314 | { |
f55ee35c | 18315 | const char *lead = ""; |
5c315b68 | 18316 | const char *sep; |
63d06c5c | 18317 | |
3e43a32a MS |
18318 | if (suffix == NULL || suffix[0] == '\0' |
18319 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
18320 | sep = ""; |
18321 | else if (cu->language == language_java) | |
18322 | sep = "."; | |
f55ee35c JK |
18323 | else if (cu->language == language_fortran && physname) |
18324 | { | |
18325 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
18326 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
18327 | ||
18328 | lead = "__"; | |
18329 | sep = "_MOD_"; | |
18330 | } | |
987504bb JJ |
18331 | else |
18332 | sep = "::"; | |
63d06c5c | 18333 | |
6dd47d34 DE |
18334 | if (prefix == NULL) |
18335 | prefix = ""; | |
18336 | if (suffix == NULL) | |
18337 | suffix = ""; | |
18338 | ||
987504bb JJ |
18339 | if (obs == NULL) |
18340 | { | |
3e43a32a MS |
18341 | char *retval |
18342 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 18343 | |
f55ee35c JK |
18344 | strcpy (retval, lead); |
18345 | strcat (retval, prefix); | |
6dd47d34 DE |
18346 | strcat (retval, sep); |
18347 | strcat (retval, suffix); | |
63d06c5c DC |
18348 | return retval; |
18349 | } | |
987504bb JJ |
18350 | else |
18351 | { | |
18352 | /* We have an obstack. */ | |
f55ee35c | 18353 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 18354 | } |
63d06c5c DC |
18355 | } |
18356 | ||
c906108c SS |
18357 | /* Return sibling of die, NULL if no sibling. */ |
18358 | ||
f9aca02d | 18359 | static struct die_info * |
fba45db2 | 18360 | sibling_die (struct die_info *die) |
c906108c | 18361 | { |
639d11d3 | 18362 | return die->sibling; |
c906108c SS |
18363 | } |
18364 | ||
71c25dea TT |
18365 | /* Get name of a die, return NULL if not found. */ |
18366 | ||
15d034d0 TT |
18367 | static const char * |
18368 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
18369 | struct obstack *obstack) |
18370 | { | |
18371 | if (name && cu->language == language_cplus) | |
18372 | { | |
18373 | char *canon_name = cp_canonicalize_string (name); | |
18374 | ||
18375 | if (canon_name != NULL) | |
18376 | { | |
18377 | if (strcmp (canon_name, name) != 0) | |
10f0c4bb | 18378 | name = obstack_copy0 (obstack, canon_name, strlen (canon_name)); |
71c25dea TT |
18379 | xfree (canon_name); |
18380 | } | |
18381 | } | |
18382 | ||
18383 | return name; | |
c906108c SS |
18384 | } |
18385 | ||
9219021c DC |
18386 | /* Get name of a die, return NULL if not found. */ |
18387 | ||
15d034d0 | 18388 | static const char * |
e142c38c | 18389 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
18390 | { |
18391 | struct attribute *attr; | |
18392 | ||
e142c38c | 18393 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
18394 | if ((!attr || !DW_STRING (attr)) |
18395 | && die->tag != DW_TAG_class_type | |
18396 | && die->tag != DW_TAG_interface_type | |
18397 | && die->tag != DW_TAG_structure_type | |
18398 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
18399 | return NULL; |
18400 | ||
18401 | switch (die->tag) | |
18402 | { | |
18403 | case DW_TAG_compile_unit: | |
95554aad | 18404 | case DW_TAG_partial_unit: |
71c25dea TT |
18405 | /* Compilation units have a DW_AT_name that is a filename, not |
18406 | a source language identifier. */ | |
18407 | case DW_TAG_enumeration_type: | |
18408 | case DW_TAG_enumerator: | |
18409 | /* These tags always have simple identifiers already; no need | |
18410 | to canonicalize them. */ | |
18411 | return DW_STRING (attr); | |
907af001 | 18412 | |
418835cc KS |
18413 | case DW_TAG_subprogram: |
18414 | /* Java constructors will all be named "<init>", so return | |
18415 | the class name when we see this special case. */ | |
18416 | if (cu->language == language_java | |
18417 | && DW_STRING (attr) != NULL | |
18418 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
18419 | { | |
18420 | struct dwarf2_cu *spec_cu = cu; | |
18421 | struct die_info *spec_die; | |
18422 | ||
18423 | /* GCJ will output '<init>' for Java constructor names. | |
18424 | For this special case, return the name of the parent class. */ | |
18425 | ||
18426 | /* GCJ may output suprogram DIEs with AT_specification set. | |
18427 | If so, use the name of the specified DIE. */ | |
18428 | spec_die = die_specification (die, &spec_cu); | |
18429 | if (spec_die != NULL) | |
18430 | return dwarf2_name (spec_die, spec_cu); | |
18431 | ||
18432 | do | |
18433 | { | |
18434 | die = die->parent; | |
18435 | if (die->tag == DW_TAG_class_type) | |
18436 | return dwarf2_name (die, cu); | |
18437 | } | |
95554aad TT |
18438 | while (die->tag != DW_TAG_compile_unit |
18439 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 18440 | } |
907af001 UW |
18441 | break; |
18442 | ||
18443 | case DW_TAG_class_type: | |
18444 | case DW_TAG_interface_type: | |
18445 | case DW_TAG_structure_type: | |
18446 | case DW_TAG_union_type: | |
18447 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
18448 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
18449 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
18450 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
18451 | if (attr && DW_STRING (attr) |
18452 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
18453 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 18454 | return NULL; |
53832f31 TT |
18455 | |
18456 | /* GCC might emit a nameless typedef that has a linkage name. See | |
18457 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
18458 | if (!attr || DW_STRING (attr) == NULL) | |
18459 | { | |
df5c6c50 | 18460 | char *demangled = NULL; |
53832f31 TT |
18461 | |
18462 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
18463 | if (attr == NULL) | |
18464 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
18465 | ||
18466 | if (attr == NULL || DW_STRING (attr) == NULL) | |
18467 | return NULL; | |
18468 | ||
df5c6c50 JK |
18469 | /* Avoid demangling DW_STRING (attr) the second time on a second |
18470 | call for the same DIE. */ | |
18471 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 18472 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
18473 | |
18474 | if (demangled) | |
18475 | { | |
96408a79 SA |
18476 | char *base; |
18477 | ||
53832f31 | 18478 | /* FIXME: we already did this for the partial symbol... */ |
10f0c4bb TT |
18479 | DW_STRING (attr) = obstack_copy0 (&cu->objfile->objfile_obstack, |
18480 | demangled, strlen (demangled)); | |
53832f31 TT |
18481 | DW_STRING_IS_CANONICAL (attr) = 1; |
18482 | xfree (demangled); | |
96408a79 SA |
18483 | |
18484 | /* Strip any leading namespaces/classes, keep only the base name. | |
18485 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
18486 | base = strrchr (DW_STRING (attr), ':'); | |
18487 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
18488 | return &base[1]; | |
18489 | else | |
18490 | return DW_STRING (attr); | |
53832f31 TT |
18491 | } |
18492 | } | |
907af001 UW |
18493 | break; |
18494 | ||
71c25dea | 18495 | default: |
907af001 UW |
18496 | break; |
18497 | } | |
18498 | ||
18499 | if (!DW_STRING_IS_CANONICAL (attr)) | |
18500 | { | |
18501 | DW_STRING (attr) | |
18502 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
18503 | &cu->objfile->objfile_obstack); | |
18504 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 18505 | } |
907af001 | 18506 | return DW_STRING (attr); |
9219021c DC |
18507 | } |
18508 | ||
18509 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
18510 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
18511 | containing the return value on output. */ | |
9219021c DC |
18512 | |
18513 | static struct die_info * | |
f2f0e013 | 18514 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
18515 | { |
18516 | struct attribute *attr; | |
9219021c | 18517 | |
f2f0e013 | 18518 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
18519 | if (attr == NULL) |
18520 | return NULL; | |
18521 | ||
f2f0e013 | 18522 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
18523 | } |
18524 | ||
c906108c SS |
18525 | /* Convert a DIE tag into its string name. */ |
18526 | ||
f39c6ffd | 18527 | static const char * |
aa1ee363 | 18528 | dwarf_tag_name (unsigned tag) |
c906108c | 18529 | { |
f39c6ffd TT |
18530 | const char *name = get_DW_TAG_name (tag); |
18531 | ||
18532 | if (name == NULL) | |
18533 | return "DW_TAG_<unknown>"; | |
18534 | ||
18535 | return name; | |
c906108c SS |
18536 | } |
18537 | ||
18538 | /* Convert a DWARF attribute code into its string name. */ | |
18539 | ||
f39c6ffd | 18540 | static const char * |
aa1ee363 | 18541 | dwarf_attr_name (unsigned attr) |
c906108c | 18542 | { |
f39c6ffd TT |
18543 | const char *name; |
18544 | ||
c764a876 | 18545 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
18546 | if (attr == DW_AT_MIPS_fde) |
18547 | return "DW_AT_MIPS_fde"; | |
18548 | #else | |
18549 | if (attr == DW_AT_HP_block_index) | |
18550 | return "DW_AT_HP_block_index"; | |
c764a876 | 18551 | #endif |
f39c6ffd TT |
18552 | |
18553 | name = get_DW_AT_name (attr); | |
18554 | ||
18555 | if (name == NULL) | |
18556 | return "DW_AT_<unknown>"; | |
18557 | ||
18558 | return name; | |
c906108c SS |
18559 | } |
18560 | ||
18561 | /* Convert a DWARF value form code into its string name. */ | |
18562 | ||
f39c6ffd | 18563 | static const char * |
aa1ee363 | 18564 | dwarf_form_name (unsigned form) |
c906108c | 18565 | { |
f39c6ffd TT |
18566 | const char *name = get_DW_FORM_name (form); |
18567 | ||
18568 | if (name == NULL) | |
18569 | return "DW_FORM_<unknown>"; | |
18570 | ||
18571 | return name; | |
c906108c SS |
18572 | } |
18573 | ||
18574 | static char * | |
fba45db2 | 18575 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
18576 | { |
18577 | if (mybool) | |
18578 | return "TRUE"; | |
18579 | else | |
18580 | return "FALSE"; | |
18581 | } | |
18582 | ||
18583 | /* Convert a DWARF type code into its string name. */ | |
18584 | ||
f39c6ffd | 18585 | static const char * |
aa1ee363 | 18586 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 18587 | { |
f39c6ffd | 18588 | const char *name = get_DW_ATE_name (enc); |
c906108c | 18589 | |
f39c6ffd TT |
18590 | if (name == NULL) |
18591 | return "DW_ATE_<unknown>"; | |
c906108c | 18592 | |
f39c6ffd | 18593 | return name; |
c906108c | 18594 | } |
c906108c | 18595 | |
f9aca02d | 18596 | static void |
d97bc12b | 18597 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
18598 | { |
18599 | unsigned int i; | |
18600 | ||
d97bc12b DE |
18601 | print_spaces (indent, f); |
18602 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 18603 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
18604 | |
18605 | if (die->parent != NULL) | |
18606 | { | |
18607 | print_spaces (indent, f); | |
18608 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 18609 | die->parent->offset.sect_off); |
d97bc12b DE |
18610 | } |
18611 | ||
18612 | print_spaces (indent, f); | |
18613 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 18614 | dwarf_bool_name (die->child != NULL)); |
c906108c | 18615 | |
d97bc12b DE |
18616 | print_spaces (indent, f); |
18617 | fprintf_unfiltered (f, " attributes:\n"); | |
18618 | ||
c906108c SS |
18619 | for (i = 0; i < die->num_attrs; ++i) |
18620 | { | |
d97bc12b DE |
18621 | print_spaces (indent, f); |
18622 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
18623 | dwarf_attr_name (die->attrs[i].name), |
18624 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 18625 | |
c906108c SS |
18626 | switch (die->attrs[i].form) |
18627 | { | |
c906108c | 18628 | case DW_FORM_addr: |
3019eac3 | 18629 | case DW_FORM_GNU_addr_index: |
d97bc12b | 18630 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 18631 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
18632 | break; |
18633 | case DW_FORM_block2: | |
18634 | case DW_FORM_block4: | |
18635 | case DW_FORM_block: | |
18636 | case DW_FORM_block1: | |
56eb65bd SP |
18637 | fprintf_unfiltered (f, "block: size %s", |
18638 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 18639 | break; |
2dc7f7b3 | 18640 | case DW_FORM_exprloc: |
56eb65bd SP |
18641 | fprintf_unfiltered (f, "expression: size %s", |
18642 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 18643 | break; |
4568ecf9 DE |
18644 | case DW_FORM_ref_addr: |
18645 | fprintf_unfiltered (f, "ref address: "); | |
18646 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
18647 | break; | |
36586728 TT |
18648 | case DW_FORM_GNU_ref_alt: |
18649 | fprintf_unfiltered (f, "alt ref address: "); | |
18650 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
18651 | break; | |
10b3939b DJ |
18652 | case DW_FORM_ref1: |
18653 | case DW_FORM_ref2: | |
18654 | case DW_FORM_ref4: | |
4568ecf9 DE |
18655 | case DW_FORM_ref8: |
18656 | case DW_FORM_ref_udata: | |
d97bc12b | 18657 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 18658 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 18659 | break; |
c906108c SS |
18660 | case DW_FORM_data1: |
18661 | case DW_FORM_data2: | |
18662 | case DW_FORM_data4: | |
ce5d95e1 | 18663 | case DW_FORM_data8: |
c906108c SS |
18664 | case DW_FORM_udata: |
18665 | case DW_FORM_sdata: | |
43bbcdc2 PH |
18666 | fprintf_unfiltered (f, "constant: %s", |
18667 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 18668 | break; |
2dc7f7b3 TT |
18669 | case DW_FORM_sec_offset: |
18670 | fprintf_unfiltered (f, "section offset: %s", | |
18671 | pulongest (DW_UNSND (&die->attrs[i]))); | |
18672 | break; | |
55f1336d | 18673 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
18674 | fprintf_unfiltered (f, "signature: %s", |
18675 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 18676 | break; |
c906108c | 18677 | case DW_FORM_string: |
4bdf3d34 | 18678 | case DW_FORM_strp: |
3019eac3 | 18679 | case DW_FORM_GNU_str_index: |
36586728 | 18680 | case DW_FORM_GNU_strp_alt: |
8285870a | 18681 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 18682 | DW_STRING (&die->attrs[i]) |
8285870a JK |
18683 | ? DW_STRING (&die->attrs[i]) : "", |
18684 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
18685 | break; |
18686 | case DW_FORM_flag: | |
18687 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 18688 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 18689 | else |
d97bc12b | 18690 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 18691 | break; |
2dc7f7b3 TT |
18692 | case DW_FORM_flag_present: |
18693 | fprintf_unfiltered (f, "flag: TRUE"); | |
18694 | break; | |
a8329558 | 18695 | case DW_FORM_indirect: |
0963b4bd MS |
18696 | /* The reader will have reduced the indirect form to |
18697 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
18698 | fprintf_unfiltered (f, |
18699 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 18700 | break; |
c906108c | 18701 | default: |
d97bc12b | 18702 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 18703 | die->attrs[i].form); |
d97bc12b | 18704 | break; |
c906108c | 18705 | } |
d97bc12b | 18706 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
18707 | } |
18708 | } | |
18709 | ||
f9aca02d | 18710 | static void |
d97bc12b | 18711 | dump_die_for_error (struct die_info *die) |
c906108c | 18712 | { |
d97bc12b DE |
18713 | dump_die_shallow (gdb_stderr, 0, die); |
18714 | } | |
18715 | ||
18716 | static void | |
18717 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
18718 | { | |
18719 | int indent = level * 4; | |
18720 | ||
18721 | gdb_assert (die != NULL); | |
18722 | ||
18723 | if (level >= max_level) | |
18724 | return; | |
18725 | ||
18726 | dump_die_shallow (f, indent, die); | |
18727 | ||
18728 | if (die->child != NULL) | |
c906108c | 18729 | { |
d97bc12b DE |
18730 | print_spaces (indent, f); |
18731 | fprintf_unfiltered (f, " Children:"); | |
18732 | if (level + 1 < max_level) | |
18733 | { | |
18734 | fprintf_unfiltered (f, "\n"); | |
18735 | dump_die_1 (f, level + 1, max_level, die->child); | |
18736 | } | |
18737 | else | |
18738 | { | |
3e43a32a MS |
18739 | fprintf_unfiltered (f, |
18740 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
18741 | } |
18742 | } | |
18743 | ||
18744 | if (die->sibling != NULL && level > 0) | |
18745 | { | |
18746 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
18747 | } |
18748 | } | |
18749 | ||
d97bc12b DE |
18750 | /* This is called from the pdie macro in gdbinit.in. |
18751 | It's not static so gcc will keep a copy callable from gdb. */ | |
18752 | ||
18753 | void | |
18754 | dump_die (struct die_info *die, int max_level) | |
18755 | { | |
18756 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
18757 | } | |
18758 | ||
f9aca02d | 18759 | static void |
51545339 | 18760 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18761 | { |
51545339 | 18762 | void **slot; |
c906108c | 18763 | |
b64f50a1 JK |
18764 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
18765 | INSERT); | |
51545339 DJ |
18766 | |
18767 | *slot = die; | |
c906108c SS |
18768 | } |
18769 | ||
b64f50a1 JK |
18770 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
18771 | required kind. */ | |
18772 | ||
18773 | static sect_offset | |
ff39bb5e | 18774 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 18775 | { |
4568ecf9 | 18776 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 18777 | |
7771576e | 18778 | if (attr_form_is_ref (attr)) |
b64f50a1 | 18779 | return retval; |
93311388 | 18780 | |
b64f50a1 | 18781 | retval.sect_off = 0; |
93311388 DE |
18782 | complaint (&symfile_complaints, |
18783 | _("unsupported die ref attribute form: '%s'"), | |
18784 | dwarf_form_name (attr->form)); | |
b64f50a1 | 18785 | return retval; |
c906108c SS |
18786 | } |
18787 | ||
43bbcdc2 PH |
18788 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
18789 | * the value held by the attribute is not constant. */ | |
a02abb62 | 18790 | |
43bbcdc2 | 18791 | static LONGEST |
ff39bb5e | 18792 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 JB |
18793 | { |
18794 | if (attr->form == DW_FORM_sdata) | |
18795 | return DW_SND (attr); | |
18796 | else if (attr->form == DW_FORM_udata | |
18797 | || attr->form == DW_FORM_data1 | |
18798 | || attr->form == DW_FORM_data2 | |
18799 | || attr->form == DW_FORM_data4 | |
18800 | || attr->form == DW_FORM_data8) | |
18801 | return DW_UNSND (attr); | |
18802 | else | |
18803 | { | |
3e43a32a MS |
18804 | complaint (&symfile_complaints, |
18805 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
18806 | dwarf_form_name (attr->form)); |
18807 | return default_value; | |
18808 | } | |
18809 | } | |
18810 | ||
348e048f DE |
18811 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
18812 | On entry *REF_CU is the CU of SRC_DIE. | |
18813 | On exit *REF_CU is the CU of the result. */ | |
18814 | ||
18815 | static struct die_info * | |
ff39bb5e | 18816 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
18817 | struct dwarf2_cu **ref_cu) |
18818 | { | |
18819 | struct die_info *die; | |
18820 | ||
7771576e | 18821 | if (attr_form_is_ref (attr)) |
348e048f | 18822 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 18823 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
18824 | die = follow_die_sig (src_die, attr, ref_cu); |
18825 | else | |
18826 | { | |
18827 | dump_die_for_error (src_die); | |
18828 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 18829 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
18830 | } |
18831 | ||
18832 | return die; | |
03dd20cc DJ |
18833 | } |
18834 | ||
5c631832 | 18835 | /* Follow reference OFFSET. |
673bfd45 DE |
18836 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
18837 | On exit *REF_CU is the CU of the result. | |
18838 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 18839 | |
f9aca02d | 18840 | static struct die_info * |
36586728 TT |
18841 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
18842 | struct dwarf2_cu **ref_cu) | |
c906108c | 18843 | { |
10b3939b | 18844 | struct die_info temp_die; |
f2f0e013 | 18845 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 18846 | |
348e048f DE |
18847 | gdb_assert (cu->per_cu != NULL); |
18848 | ||
98bfdba5 PA |
18849 | target_cu = cu; |
18850 | ||
3019eac3 | 18851 | if (cu->per_cu->is_debug_types) |
348e048f DE |
18852 | { |
18853 | /* .debug_types CUs cannot reference anything outside their CU. | |
18854 | If they need to, they have to reference a signatured type via | |
55f1336d | 18855 | DW_FORM_ref_sig8. */ |
348e048f | 18856 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 18857 | return NULL; |
348e048f | 18858 | } |
36586728 TT |
18859 | else if (offset_in_dwz != cu->per_cu->is_dwz |
18860 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
18861 | { |
18862 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 18863 | |
36586728 TT |
18864 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
18865 | cu->objfile); | |
03dd20cc DJ |
18866 | |
18867 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
18868 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
18869 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 18870 | |
10b3939b DJ |
18871 | target_cu = per_cu->cu; |
18872 | } | |
98bfdba5 PA |
18873 | else if (cu->dies == NULL) |
18874 | { | |
18875 | /* We're loading full DIEs during partial symbol reading. */ | |
18876 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 18877 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 18878 | } |
c906108c | 18879 | |
f2f0e013 | 18880 | *ref_cu = target_cu; |
51545339 | 18881 | temp_die.offset = offset; |
b64f50a1 | 18882 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 18883 | } |
10b3939b | 18884 | |
5c631832 JK |
18885 | /* Follow reference attribute ATTR of SRC_DIE. |
18886 | On entry *REF_CU is the CU of SRC_DIE. | |
18887 | On exit *REF_CU is the CU of the result. */ | |
18888 | ||
18889 | static struct die_info * | |
ff39bb5e | 18890 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
18891 | struct dwarf2_cu **ref_cu) |
18892 | { | |
b64f50a1 | 18893 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
18894 | struct dwarf2_cu *cu = *ref_cu; |
18895 | struct die_info *die; | |
18896 | ||
36586728 TT |
18897 | die = follow_die_offset (offset, |
18898 | (attr->form == DW_FORM_GNU_ref_alt | |
18899 | || cu->per_cu->is_dwz), | |
18900 | ref_cu); | |
5c631832 JK |
18901 | if (!die) |
18902 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
18903 | "at 0x%x [in module %s]"), | |
4262abfb JK |
18904 | offset.sect_off, src_die->offset.sect_off, |
18905 | objfile_name (cu->objfile)); | |
348e048f | 18906 | |
5c631832 JK |
18907 | return die; |
18908 | } | |
18909 | ||
d83e736b JK |
18910 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
18911 | Returned value is intended for DW_OP_call*. Returned | |
18912 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
18913 | |
18914 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
18915 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
18916 | struct dwarf2_per_cu_data *per_cu, | |
18917 | CORE_ADDR (*get_frame_pc) (void *baton), | |
18918 | void *baton) | |
5c631832 | 18919 | { |
918dd910 | 18920 | struct dwarf2_cu *cu; |
5c631832 JK |
18921 | struct die_info *die; |
18922 | struct attribute *attr; | |
18923 | struct dwarf2_locexpr_baton retval; | |
18924 | ||
8cf6f0b1 TT |
18925 | dw2_setup (per_cu->objfile); |
18926 | ||
918dd910 JK |
18927 | if (per_cu->cu == NULL) |
18928 | load_cu (per_cu); | |
18929 | cu = per_cu->cu; | |
18930 | ||
36586728 | 18931 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
18932 | if (!die) |
18933 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 18934 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
18935 | |
18936 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
18937 | if (!attr) | |
18938 | { | |
e103e986 JK |
18939 | /* DWARF: "If there is no such attribute, then there is no effect.". |
18940 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 18941 | |
e103e986 | 18942 | retval.data = NULL; |
5c631832 JK |
18943 | retval.size = 0; |
18944 | } | |
8cf6f0b1 TT |
18945 | else if (attr_form_is_section_offset (attr)) |
18946 | { | |
18947 | struct dwarf2_loclist_baton loclist_baton; | |
18948 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
18949 | size_t size; | |
18950 | ||
18951 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
18952 | ||
18953 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
18954 | &size, pc); | |
18955 | retval.size = size; | |
18956 | } | |
5c631832 JK |
18957 | else |
18958 | { | |
18959 | if (!attr_form_is_block (attr)) | |
18960 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
18961 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
4262abfb | 18962 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
18963 | |
18964 | retval.data = DW_BLOCK (attr)->data; | |
18965 | retval.size = DW_BLOCK (attr)->size; | |
18966 | } | |
18967 | retval.per_cu = cu->per_cu; | |
918dd910 | 18968 | |
918dd910 JK |
18969 | age_cached_comp_units (); |
18970 | ||
5c631832 | 18971 | return retval; |
348e048f DE |
18972 | } |
18973 | ||
8b9737bf TT |
18974 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
18975 | offset. */ | |
18976 | ||
18977 | struct dwarf2_locexpr_baton | |
18978 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
18979 | struct dwarf2_per_cu_data *per_cu, | |
18980 | CORE_ADDR (*get_frame_pc) (void *baton), | |
18981 | void *baton) | |
18982 | { | |
18983 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
18984 | ||
18985 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
18986 | } | |
18987 | ||
b6807d98 TT |
18988 | /* Write a constant of a given type as target-ordered bytes into |
18989 | OBSTACK. */ | |
18990 | ||
18991 | static const gdb_byte * | |
18992 | write_constant_as_bytes (struct obstack *obstack, | |
18993 | enum bfd_endian byte_order, | |
18994 | struct type *type, | |
18995 | ULONGEST value, | |
18996 | LONGEST *len) | |
18997 | { | |
18998 | gdb_byte *result; | |
18999 | ||
19000 | *len = TYPE_LENGTH (type); | |
19001 | result = obstack_alloc (obstack, *len); | |
19002 | store_unsigned_integer (result, *len, byte_order, value); | |
19003 | ||
19004 | return result; | |
19005 | } | |
19006 | ||
19007 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
19008 | pointer to the constant bytes and set LEN to the length of the | |
19009 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
19010 | does not have a DW_AT_const_value, return NULL. */ | |
19011 | ||
19012 | const gdb_byte * | |
19013 | dwarf2_fetch_constant_bytes (sect_offset offset, | |
19014 | struct dwarf2_per_cu_data *per_cu, | |
19015 | struct obstack *obstack, | |
19016 | LONGEST *len) | |
19017 | { | |
19018 | struct dwarf2_cu *cu; | |
19019 | struct die_info *die; | |
19020 | struct attribute *attr; | |
19021 | const gdb_byte *result = NULL; | |
19022 | struct type *type; | |
19023 | LONGEST value; | |
19024 | enum bfd_endian byte_order; | |
19025 | ||
19026 | dw2_setup (per_cu->objfile); | |
19027 | ||
19028 | if (per_cu->cu == NULL) | |
19029 | load_cu (per_cu); | |
19030 | cu = per_cu->cu; | |
19031 | ||
19032 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); | |
19033 | if (!die) | |
19034 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 19035 | offset.sect_off, objfile_name (per_cu->objfile)); |
b6807d98 TT |
19036 | |
19037 | ||
19038 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
19039 | if (attr == NULL) | |
19040 | return NULL; | |
19041 | ||
19042 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
19043 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
19044 | ||
19045 | switch (attr->form) | |
19046 | { | |
19047 | case DW_FORM_addr: | |
19048 | case DW_FORM_GNU_addr_index: | |
19049 | { | |
19050 | gdb_byte *tem; | |
19051 | ||
19052 | *len = cu->header.addr_size; | |
19053 | tem = obstack_alloc (obstack, *len); | |
19054 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); | |
19055 | result = tem; | |
19056 | } | |
19057 | break; | |
19058 | case DW_FORM_string: | |
19059 | case DW_FORM_strp: | |
19060 | case DW_FORM_GNU_str_index: | |
19061 | case DW_FORM_GNU_strp_alt: | |
19062 | /* DW_STRING is already allocated on the objfile obstack, point | |
19063 | directly to it. */ | |
19064 | result = (const gdb_byte *) DW_STRING (attr); | |
19065 | *len = strlen (DW_STRING (attr)); | |
19066 | break; | |
19067 | case DW_FORM_block1: | |
19068 | case DW_FORM_block2: | |
19069 | case DW_FORM_block4: | |
19070 | case DW_FORM_block: | |
19071 | case DW_FORM_exprloc: | |
19072 | result = DW_BLOCK (attr)->data; | |
19073 | *len = DW_BLOCK (attr)->size; | |
19074 | break; | |
19075 | ||
19076 | /* The DW_AT_const_value attributes are supposed to carry the | |
19077 | symbol's value "represented as it would be on the target | |
19078 | architecture." By the time we get here, it's already been | |
19079 | converted to host endianness, so we just need to sign- or | |
19080 | zero-extend it as appropriate. */ | |
19081 | case DW_FORM_data1: | |
19082 | type = die_type (die, cu); | |
19083 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
19084 | if (result == NULL) | |
19085 | result = write_constant_as_bytes (obstack, byte_order, | |
19086 | type, value, len); | |
19087 | break; | |
19088 | case DW_FORM_data2: | |
19089 | type = die_type (die, cu); | |
19090 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
19091 | if (result == NULL) | |
19092 | result = write_constant_as_bytes (obstack, byte_order, | |
19093 | type, value, len); | |
19094 | break; | |
19095 | case DW_FORM_data4: | |
19096 | type = die_type (die, cu); | |
19097 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
19098 | if (result == NULL) | |
19099 | result = write_constant_as_bytes (obstack, byte_order, | |
19100 | type, value, len); | |
19101 | break; | |
19102 | case DW_FORM_data8: | |
19103 | type = die_type (die, cu); | |
19104 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
19105 | if (result == NULL) | |
19106 | result = write_constant_as_bytes (obstack, byte_order, | |
19107 | type, value, len); | |
19108 | break; | |
19109 | ||
19110 | case DW_FORM_sdata: | |
19111 | type = die_type (die, cu); | |
19112 | result = write_constant_as_bytes (obstack, byte_order, | |
19113 | type, DW_SND (attr), len); | |
19114 | break; | |
19115 | ||
19116 | case DW_FORM_udata: | |
19117 | type = die_type (die, cu); | |
19118 | result = write_constant_as_bytes (obstack, byte_order, | |
19119 | type, DW_UNSND (attr), len); | |
19120 | break; | |
19121 | ||
19122 | default: | |
19123 | complaint (&symfile_complaints, | |
19124 | _("unsupported const value attribute form: '%s'"), | |
19125 | dwarf_form_name (attr->form)); | |
19126 | break; | |
19127 | } | |
19128 | ||
19129 | return result; | |
19130 | } | |
19131 | ||
8a9b8146 TT |
19132 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
19133 | PER_CU. */ | |
19134 | ||
19135 | struct type * | |
b64f50a1 | 19136 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
19137 | struct dwarf2_per_cu_data *per_cu) |
19138 | { | |
b64f50a1 JK |
19139 | sect_offset die_offset_sect; |
19140 | ||
8a9b8146 | 19141 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
19142 | |
19143 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
19144 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
19145 | } |
19146 | ||
ac9ec31b | 19147 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 19148 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
19149 | On exit *REF_CU is the CU of the result. |
19150 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
19151 | |
19152 | static struct die_info * | |
ac9ec31b DE |
19153 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
19154 | struct dwarf2_cu **ref_cu) | |
348e048f DE |
19155 | { |
19156 | struct objfile *objfile = (*ref_cu)->objfile; | |
19157 | struct die_info temp_die; | |
348e048f DE |
19158 | struct dwarf2_cu *sig_cu; |
19159 | struct die_info *die; | |
19160 | ||
ac9ec31b DE |
19161 | /* While it might be nice to assert sig_type->type == NULL here, |
19162 | we can get here for DW_AT_imported_declaration where we need | |
19163 | the DIE not the type. */ | |
348e048f DE |
19164 | |
19165 | /* If necessary, add it to the queue and load its DIEs. */ | |
19166 | ||
95554aad | 19167 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 19168 | read_signatured_type (sig_type); |
348e048f | 19169 | |
348e048f | 19170 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 19171 | gdb_assert (sig_cu != NULL); |
3019eac3 DE |
19172 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
19173 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
19174 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
19175 | temp_die.offset.sect_off); | |
348e048f DE |
19176 | if (die) |
19177 | { | |
796a7ff8 DE |
19178 | /* For .gdb_index version 7 keep track of included TUs. |
19179 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
19180 | if (dwarf2_per_objfile->index_table != NULL | |
19181 | && dwarf2_per_objfile->index_table->version <= 7) | |
19182 | { | |
19183 | VEC_safe_push (dwarf2_per_cu_ptr, | |
19184 | (*ref_cu)->per_cu->imported_symtabs, | |
19185 | sig_cu->per_cu); | |
19186 | } | |
19187 | ||
348e048f DE |
19188 | *ref_cu = sig_cu; |
19189 | return die; | |
19190 | } | |
19191 | ||
ac9ec31b DE |
19192 | return NULL; |
19193 | } | |
19194 | ||
19195 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
19196 | On entry *REF_CU is the CU of SRC_DIE. | |
19197 | On exit *REF_CU is the CU of the result. | |
19198 | The result is the DIE of the type. | |
19199 | If the referenced type cannot be found an error is thrown. */ | |
19200 | ||
19201 | static struct die_info * | |
ff39bb5e | 19202 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
19203 | struct dwarf2_cu **ref_cu) |
19204 | { | |
19205 | ULONGEST signature = DW_SIGNATURE (attr); | |
19206 | struct signatured_type *sig_type; | |
19207 | struct die_info *die; | |
19208 | ||
19209 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
19210 | ||
a2ce51a0 | 19211 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
19212 | /* sig_type will be NULL if the signatured type is missing from |
19213 | the debug info. */ | |
19214 | if (sig_type == NULL) | |
19215 | { | |
19216 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
19217 | " from DIE at 0x%x [in module %s]"), | |
19218 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 19219 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
19220 | } |
19221 | ||
19222 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
19223 | if (die == NULL) | |
19224 | { | |
19225 | dump_die_for_error (src_die); | |
19226 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
19227 | " from DIE at 0x%x [in module %s]"), | |
19228 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 19229 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
19230 | } |
19231 | ||
19232 | return die; | |
19233 | } | |
19234 | ||
19235 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
19236 | reading in and processing the type unit if necessary. */ | |
19237 | ||
19238 | static struct type * | |
19239 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
19240 | struct dwarf2_cu *cu) | |
19241 | { | |
19242 | struct signatured_type *sig_type; | |
19243 | struct dwarf2_cu *type_cu; | |
19244 | struct die_info *type_die; | |
19245 | struct type *type; | |
19246 | ||
a2ce51a0 | 19247 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
19248 | /* sig_type will be NULL if the signatured type is missing from |
19249 | the debug info. */ | |
19250 | if (sig_type == NULL) | |
19251 | { | |
19252 | complaint (&symfile_complaints, | |
19253 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
19254 | " from DIE at 0x%x [in module %s]"), | |
19255 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19256 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19257 | return build_error_marker_type (cu, die); |
19258 | } | |
19259 | ||
19260 | /* If we already know the type we're done. */ | |
19261 | if (sig_type->type != NULL) | |
19262 | return sig_type->type; | |
19263 | ||
19264 | type_cu = cu; | |
19265 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
19266 | if (type_die != NULL) | |
19267 | { | |
19268 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
19269 | is created. This is important, for example, because for c++ classes | |
19270 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
19271 | type = read_type_die (type_die, type_cu); | |
19272 | if (type == NULL) | |
19273 | { | |
19274 | complaint (&symfile_complaints, | |
19275 | _("Dwarf Error: Cannot build signatured type %s" | |
19276 | " referenced from DIE at 0x%x [in module %s]"), | |
19277 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19278 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19279 | type = build_error_marker_type (cu, die); |
19280 | } | |
19281 | } | |
19282 | else | |
19283 | { | |
19284 | complaint (&symfile_complaints, | |
19285 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
19286 | " from DIE at 0x%x [in module %s]"), | |
19287 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19288 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19289 | type = build_error_marker_type (cu, die); |
19290 | } | |
19291 | sig_type->type = type; | |
19292 | ||
19293 | return type; | |
19294 | } | |
19295 | ||
19296 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
19297 | reading in and processing the type unit if necessary. */ | |
19298 | ||
19299 | static struct type * | |
ff39bb5e | 19300 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 19301 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
19302 | { |
19303 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 19304 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
19305 | { |
19306 | struct dwarf2_cu *type_cu = cu; | |
19307 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
19308 | ||
19309 | return read_type_die (type_die, type_cu); | |
19310 | } | |
19311 | else if (attr->form == DW_FORM_ref_sig8) | |
19312 | { | |
19313 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
19314 | } | |
19315 | else | |
19316 | { | |
19317 | complaint (&symfile_complaints, | |
19318 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
19319 | " at 0x%x [in module %s]"), | |
19320 | dwarf_form_name (attr->form), die->offset.sect_off, | |
4262abfb | 19321 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19322 | return build_error_marker_type (cu, die); |
19323 | } | |
348e048f DE |
19324 | } |
19325 | ||
e5fe5e75 | 19326 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
19327 | |
19328 | static void | |
e5fe5e75 | 19329 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 19330 | { |
52dc124a | 19331 | struct signatured_type *sig_type; |
348e048f | 19332 | |
f4dc4d17 DE |
19333 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
19334 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
19335 | ||
6721b2ec DE |
19336 | /* We have the per_cu, but we need the signatured_type. |
19337 | Fortunately this is an easy translation. */ | |
19338 | gdb_assert (per_cu->is_debug_types); | |
19339 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 19340 | |
6721b2ec | 19341 | gdb_assert (per_cu->cu == NULL); |
348e048f | 19342 | |
52dc124a | 19343 | read_signatured_type (sig_type); |
348e048f | 19344 | |
6721b2ec | 19345 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
19346 | } |
19347 | ||
dee91e82 DE |
19348 | /* die_reader_func for read_signatured_type. |
19349 | This is identical to load_full_comp_unit_reader, | |
19350 | but is kept separate for now. */ | |
348e048f DE |
19351 | |
19352 | static void | |
dee91e82 | 19353 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 19354 | const gdb_byte *info_ptr, |
dee91e82 DE |
19355 | struct die_info *comp_unit_die, |
19356 | int has_children, | |
19357 | void *data) | |
348e048f | 19358 | { |
dee91e82 | 19359 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 19360 | |
dee91e82 DE |
19361 | gdb_assert (cu->die_hash == NULL); |
19362 | cu->die_hash = | |
19363 | htab_create_alloc_ex (cu->header.length / 12, | |
19364 | die_hash, | |
19365 | die_eq, | |
19366 | NULL, | |
19367 | &cu->comp_unit_obstack, | |
19368 | hashtab_obstack_allocate, | |
19369 | dummy_obstack_deallocate); | |
348e048f | 19370 | |
dee91e82 DE |
19371 | if (has_children) |
19372 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
19373 | &info_ptr, comp_unit_die); | |
19374 | cu->dies = comp_unit_die; | |
19375 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
19376 | |
19377 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 19378 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 19379 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
19380 | or we won't be able to build types correctly. |
19381 | Similarly, if we do not read the producer, we can not apply | |
19382 | producer-specific interpretation. */ | |
95554aad | 19383 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 19384 | } |
348e048f | 19385 | |
3019eac3 DE |
19386 | /* Read in a signatured type and build its CU and DIEs. |
19387 | If the type is a stub for the real type in a DWO file, | |
19388 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
19389 | |
19390 | static void | |
19391 | read_signatured_type (struct signatured_type *sig_type) | |
19392 | { | |
19393 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 19394 | |
3019eac3 | 19395 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 19396 | gdb_assert (per_cu->cu == NULL); |
348e048f | 19397 | |
f4dc4d17 DE |
19398 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
19399 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 19400 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
19401 | } |
19402 | ||
c906108c SS |
19403 | /* Decode simple location descriptions. |
19404 | Given a pointer to a dwarf block that defines a location, compute | |
19405 | the location and return the value. | |
19406 | ||
4cecd739 DJ |
19407 | NOTE drow/2003-11-18: This function is called in two situations |
19408 | now: for the address of static or global variables (partial symbols | |
19409 | only) and for offsets into structures which are expected to be | |
19410 | (more or less) constant. The partial symbol case should go away, | |
19411 | and only the constant case should remain. That will let this | |
19412 | function complain more accurately. A few special modes are allowed | |
19413 | without complaint for global variables (for instance, global | |
19414 | register values and thread-local values). | |
c906108c SS |
19415 | |
19416 | A location description containing no operations indicates that the | |
4cecd739 | 19417 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
19418 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
19419 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
19420 | complaint. |
19421 | ||
19422 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
19423 | |
19424 | static CORE_ADDR | |
e7c27a73 | 19425 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 19426 | { |
e7c27a73 | 19427 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
19428 | size_t i; |
19429 | size_t size = blk->size; | |
d521ce57 | 19430 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
19431 | CORE_ADDR stack[64]; |
19432 | int stacki; | |
19433 | unsigned int bytes_read, unsnd; | |
19434 | gdb_byte op; | |
c906108c | 19435 | |
21ae7a4d JK |
19436 | i = 0; |
19437 | stacki = 0; | |
19438 | stack[stacki] = 0; | |
19439 | stack[++stacki] = 0; | |
19440 | ||
19441 | while (i < size) | |
19442 | { | |
19443 | op = data[i++]; | |
19444 | switch (op) | |
19445 | { | |
19446 | case DW_OP_lit0: | |
19447 | case DW_OP_lit1: | |
19448 | case DW_OP_lit2: | |
19449 | case DW_OP_lit3: | |
19450 | case DW_OP_lit4: | |
19451 | case DW_OP_lit5: | |
19452 | case DW_OP_lit6: | |
19453 | case DW_OP_lit7: | |
19454 | case DW_OP_lit8: | |
19455 | case DW_OP_lit9: | |
19456 | case DW_OP_lit10: | |
19457 | case DW_OP_lit11: | |
19458 | case DW_OP_lit12: | |
19459 | case DW_OP_lit13: | |
19460 | case DW_OP_lit14: | |
19461 | case DW_OP_lit15: | |
19462 | case DW_OP_lit16: | |
19463 | case DW_OP_lit17: | |
19464 | case DW_OP_lit18: | |
19465 | case DW_OP_lit19: | |
19466 | case DW_OP_lit20: | |
19467 | case DW_OP_lit21: | |
19468 | case DW_OP_lit22: | |
19469 | case DW_OP_lit23: | |
19470 | case DW_OP_lit24: | |
19471 | case DW_OP_lit25: | |
19472 | case DW_OP_lit26: | |
19473 | case DW_OP_lit27: | |
19474 | case DW_OP_lit28: | |
19475 | case DW_OP_lit29: | |
19476 | case DW_OP_lit30: | |
19477 | case DW_OP_lit31: | |
19478 | stack[++stacki] = op - DW_OP_lit0; | |
19479 | break; | |
f1bea926 | 19480 | |
21ae7a4d JK |
19481 | case DW_OP_reg0: |
19482 | case DW_OP_reg1: | |
19483 | case DW_OP_reg2: | |
19484 | case DW_OP_reg3: | |
19485 | case DW_OP_reg4: | |
19486 | case DW_OP_reg5: | |
19487 | case DW_OP_reg6: | |
19488 | case DW_OP_reg7: | |
19489 | case DW_OP_reg8: | |
19490 | case DW_OP_reg9: | |
19491 | case DW_OP_reg10: | |
19492 | case DW_OP_reg11: | |
19493 | case DW_OP_reg12: | |
19494 | case DW_OP_reg13: | |
19495 | case DW_OP_reg14: | |
19496 | case DW_OP_reg15: | |
19497 | case DW_OP_reg16: | |
19498 | case DW_OP_reg17: | |
19499 | case DW_OP_reg18: | |
19500 | case DW_OP_reg19: | |
19501 | case DW_OP_reg20: | |
19502 | case DW_OP_reg21: | |
19503 | case DW_OP_reg22: | |
19504 | case DW_OP_reg23: | |
19505 | case DW_OP_reg24: | |
19506 | case DW_OP_reg25: | |
19507 | case DW_OP_reg26: | |
19508 | case DW_OP_reg27: | |
19509 | case DW_OP_reg28: | |
19510 | case DW_OP_reg29: | |
19511 | case DW_OP_reg30: | |
19512 | case DW_OP_reg31: | |
19513 | stack[++stacki] = op - DW_OP_reg0; | |
19514 | if (i < size) | |
19515 | dwarf2_complex_location_expr_complaint (); | |
19516 | break; | |
c906108c | 19517 | |
21ae7a4d JK |
19518 | case DW_OP_regx: |
19519 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
19520 | i += bytes_read; | |
19521 | stack[++stacki] = unsnd; | |
19522 | if (i < size) | |
19523 | dwarf2_complex_location_expr_complaint (); | |
19524 | break; | |
c906108c | 19525 | |
21ae7a4d JK |
19526 | case DW_OP_addr: |
19527 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
19528 | cu, &bytes_read); | |
19529 | i += bytes_read; | |
19530 | break; | |
d53d4ac5 | 19531 | |
21ae7a4d JK |
19532 | case DW_OP_const1u: |
19533 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
19534 | i += 1; | |
19535 | break; | |
19536 | ||
19537 | case DW_OP_const1s: | |
19538 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
19539 | i += 1; | |
19540 | break; | |
19541 | ||
19542 | case DW_OP_const2u: | |
19543 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
19544 | i += 2; | |
19545 | break; | |
19546 | ||
19547 | case DW_OP_const2s: | |
19548 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
19549 | i += 2; | |
19550 | break; | |
d53d4ac5 | 19551 | |
21ae7a4d JK |
19552 | case DW_OP_const4u: |
19553 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
19554 | i += 4; | |
19555 | break; | |
19556 | ||
19557 | case DW_OP_const4s: | |
19558 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
19559 | i += 4; | |
19560 | break; | |
19561 | ||
585861ea JK |
19562 | case DW_OP_const8u: |
19563 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
19564 | i += 8; | |
19565 | break; | |
19566 | ||
21ae7a4d JK |
19567 | case DW_OP_constu: |
19568 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
19569 | &bytes_read); | |
19570 | i += bytes_read; | |
19571 | break; | |
19572 | ||
19573 | case DW_OP_consts: | |
19574 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
19575 | i += bytes_read; | |
19576 | break; | |
19577 | ||
19578 | case DW_OP_dup: | |
19579 | stack[stacki + 1] = stack[stacki]; | |
19580 | stacki++; | |
19581 | break; | |
19582 | ||
19583 | case DW_OP_plus: | |
19584 | stack[stacki - 1] += stack[stacki]; | |
19585 | stacki--; | |
19586 | break; | |
19587 | ||
19588 | case DW_OP_plus_uconst: | |
19589 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
19590 | &bytes_read); | |
19591 | i += bytes_read; | |
19592 | break; | |
19593 | ||
19594 | case DW_OP_minus: | |
19595 | stack[stacki - 1] -= stack[stacki]; | |
19596 | stacki--; | |
19597 | break; | |
19598 | ||
19599 | case DW_OP_deref: | |
19600 | /* If we're not the last op, then we definitely can't encode | |
19601 | this using GDB's address_class enum. This is valid for partial | |
19602 | global symbols, although the variable's address will be bogus | |
19603 | in the psymtab. */ | |
19604 | if (i < size) | |
19605 | dwarf2_complex_location_expr_complaint (); | |
19606 | break; | |
19607 | ||
19608 | case DW_OP_GNU_push_tls_address: | |
19609 | /* The top of the stack has the offset from the beginning | |
19610 | of the thread control block at which the variable is located. */ | |
19611 | /* Nothing should follow this operator, so the top of stack would | |
19612 | be returned. */ | |
19613 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
19614 | address will be bogus in the psymtab. Make it always at least |
19615 | non-zero to not look as a variable garbage collected by linker | |
19616 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
19617 | if (i < size) |
19618 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 19619 | stack[stacki]++; |
21ae7a4d JK |
19620 | break; |
19621 | ||
19622 | case DW_OP_GNU_uninit: | |
19623 | break; | |
19624 | ||
3019eac3 | 19625 | case DW_OP_GNU_addr_index: |
49f6c839 | 19626 | case DW_OP_GNU_const_index: |
3019eac3 DE |
19627 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
19628 | &bytes_read); | |
19629 | i += bytes_read; | |
19630 | break; | |
19631 | ||
21ae7a4d JK |
19632 | default: |
19633 | { | |
f39c6ffd | 19634 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
19635 | |
19636 | if (name) | |
19637 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
19638 | name); | |
19639 | else | |
19640 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
19641 | op); | |
19642 | } | |
19643 | ||
19644 | return (stack[stacki]); | |
d53d4ac5 | 19645 | } |
3c6e0cb3 | 19646 | |
21ae7a4d JK |
19647 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
19648 | outside of the allocated space. Also enforce minimum>0. */ | |
19649 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
19650 | { | |
19651 | complaint (&symfile_complaints, | |
19652 | _("location description stack overflow")); | |
19653 | return 0; | |
19654 | } | |
19655 | ||
19656 | if (stacki <= 0) | |
19657 | { | |
19658 | complaint (&symfile_complaints, | |
19659 | _("location description stack underflow")); | |
19660 | return 0; | |
19661 | } | |
19662 | } | |
19663 | return (stack[stacki]); | |
c906108c SS |
19664 | } |
19665 | ||
19666 | /* memory allocation interface */ | |
19667 | ||
c906108c | 19668 | static struct dwarf_block * |
7b5a2f43 | 19669 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
19670 | { |
19671 | struct dwarf_block *blk; | |
19672 | ||
19673 | blk = (struct dwarf_block *) | |
7b5a2f43 | 19674 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
19675 | return (blk); |
19676 | } | |
19677 | ||
c906108c | 19678 | static struct die_info * |
b60c80d6 | 19679 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
19680 | { |
19681 | struct die_info *die; | |
b60c80d6 DJ |
19682 | size_t size = sizeof (struct die_info); |
19683 | ||
19684 | if (num_attrs > 1) | |
19685 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 19686 | |
b60c80d6 | 19687 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
19688 | memset (die, 0, sizeof (struct die_info)); |
19689 | return (die); | |
19690 | } | |
2e276125 JB |
19691 | |
19692 | \f | |
19693 | /* Macro support. */ | |
19694 | ||
233d95b5 JK |
19695 | /* Return file name relative to the compilation directory of file number I in |
19696 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 19697 | responsible for freeing it. */ |
233d95b5 | 19698 | |
2e276125 | 19699 | static char * |
233d95b5 | 19700 | file_file_name (int file, struct line_header *lh) |
2e276125 | 19701 | { |
6a83a1e6 EZ |
19702 | /* Is the file number a valid index into the line header's file name |
19703 | table? Remember that file numbers start with one, not zero. */ | |
19704 | if (1 <= file && file <= lh->num_file_names) | |
19705 | { | |
19706 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 19707 | |
233d95b5 | 19708 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0) |
6a83a1e6 | 19709 | return xstrdup (fe->name); |
233d95b5 JK |
19710 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
19711 | fe->name, NULL); | |
6a83a1e6 | 19712 | } |
2e276125 JB |
19713 | else |
19714 | { | |
6a83a1e6 EZ |
19715 | /* The compiler produced a bogus file number. We can at least |
19716 | record the macro definitions made in the file, even if we | |
19717 | won't be able to find the file by name. */ | |
19718 | char fake_name[80]; | |
9a619af0 | 19719 | |
8c042590 PM |
19720 | xsnprintf (fake_name, sizeof (fake_name), |
19721 | "<bad macro file number %d>", file); | |
2e276125 | 19722 | |
6e70227d | 19723 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
19724 | _("bad file number in macro information (%d)"), |
19725 | file); | |
2e276125 | 19726 | |
6a83a1e6 | 19727 | return xstrdup (fake_name); |
2e276125 JB |
19728 | } |
19729 | } | |
19730 | ||
233d95b5 JK |
19731 | /* Return the full name of file number I in *LH's file name table. |
19732 | Use COMP_DIR as the name of the current directory of the | |
19733 | compilation. The result is allocated using xmalloc; the caller is | |
19734 | responsible for freeing it. */ | |
19735 | static char * | |
19736 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
19737 | { | |
19738 | /* Is the file number a valid index into the line header's file name | |
19739 | table? Remember that file numbers start with one, not zero. */ | |
19740 | if (1 <= file && file <= lh->num_file_names) | |
19741 | { | |
19742 | char *relative = file_file_name (file, lh); | |
19743 | ||
19744 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
19745 | return relative; | |
19746 | return reconcat (relative, comp_dir, SLASH_STRING, relative, NULL); | |
19747 | } | |
19748 | else | |
19749 | return file_file_name (file, lh); | |
19750 | } | |
19751 | ||
2e276125 JB |
19752 | |
19753 | static struct macro_source_file * | |
19754 | macro_start_file (int file, int line, | |
19755 | struct macro_source_file *current_file, | |
19756 | const char *comp_dir, | |
19757 | struct line_header *lh, struct objfile *objfile) | |
19758 | { | |
233d95b5 JK |
19759 | /* File name relative to the compilation directory of this source file. */ |
19760 | char *file_name = file_file_name (file, lh); | |
2e276125 | 19761 | |
2e276125 | 19762 | if (! current_file) |
abc9d0dc | 19763 | { |
fc474241 DE |
19764 | /* Note: We don't create a macro table for this compilation unit |
19765 | at all until we actually get a filename. */ | |
19766 | struct macro_table *macro_table = get_macro_table (objfile, comp_dir); | |
19767 | ||
abc9d0dc TT |
19768 | /* If we have no current file, then this must be the start_file |
19769 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
19770 | current_file = macro_set_main (macro_table, file_name); |
19771 | macro_define_special (macro_table); | |
abc9d0dc | 19772 | } |
2e276125 | 19773 | else |
233d95b5 | 19774 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 19775 | |
233d95b5 | 19776 | xfree (file_name); |
6e70227d | 19777 | |
2e276125 JB |
19778 | return current_file; |
19779 | } | |
19780 | ||
19781 | ||
19782 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
19783 | followed by a null byte. */ | |
19784 | static char * | |
19785 | copy_string (const char *buf, int len) | |
19786 | { | |
19787 | char *s = xmalloc (len + 1); | |
9a619af0 | 19788 | |
2e276125 JB |
19789 | memcpy (s, buf, len); |
19790 | s[len] = '\0'; | |
2e276125 JB |
19791 | return s; |
19792 | } | |
19793 | ||
19794 | ||
19795 | static const char * | |
19796 | consume_improper_spaces (const char *p, const char *body) | |
19797 | { | |
19798 | if (*p == ' ') | |
19799 | { | |
4d3c2250 | 19800 | complaint (&symfile_complaints, |
3e43a32a MS |
19801 | _("macro definition contains spaces " |
19802 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 19803 | body); |
2e276125 JB |
19804 | |
19805 | while (*p == ' ') | |
19806 | p++; | |
19807 | } | |
19808 | ||
19809 | return p; | |
19810 | } | |
19811 | ||
19812 | ||
19813 | static void | |
19814 | parse_macro_definition (struct macro_source_file *file, int line, | |
19815 | const char *body) | |
19816 | { | |
19817 | const char *p; | |
19818 | ||
19819 | /* The body string takes one of two forms. For object-like macro | |
19820 | definitions, it should be: | |
19821 | ||
19822 | <macro name> " " <definition> | |
19823 | ||
19824 | For function-like macro definitions, it should be: | |
19825 | ||
19826 | <macro name> "() " <definition> | |
19827 | or | |
19828 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
19829 | ||
19830 | Spaces may appear only where explicitly indicated, and in the | |
19831 | <definition>. | |
19832 | ||
19833 | The Dwarf 2 spec says that an object-like macro's name is always | |
19834 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 19835 | the space when the macro's definition is the empty string. |
2e276125 JB |
19836 | |
19837 | The Dwarf 2 spec says that there should be no spaces between the | |
19838 | formal arguments in a function-like macro's formal argument list, | |
19839 | but versions of GCC around March 2002 include spaces after the | |
19840 | commas. */ | |
19841 | ||
19842 | ||
19843 | /* Find the extent of the macro name. The macro name is terminated | |
19844 | by either a space or null character (for an object-like macro) or | |
19845 | an opening paren (for a function-like macro). */ | |
19846 | for (p = body; *p; p++) | |
19847 | if (*p == ' ' || *p == '(') | |
19848 | break; | |
19849 | ||
19850 | if (*p == ' ' || *p == '\0') | |
19851 | { | |
19852 | /* It's an object-like macro. */ | |
19853 | int name_len = p - body; | |
19854 | char *name = copy_string (body, name_len); | |
19855 | const char *replacement; | |
19856 | ||
19857 | if (*p == ' ') | |
19858 | replacement = body + name_len + 1; | |
19859 | else | |
19860 | { | |
4d3c2250 | 19861 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19862 | replacement = body + name_len; |
19863 | } | |
6e70227d | 19864 | |
2e276125 JB |
19865 | macro_define_object (file, line, name, replacement); |
19866 | ||
19867 | xfree (name); | |
19868 | } | |
19869 | else if (*p == '(') | |
19870 | { | |
19871 | /* It's a function-like macro. */ | |
19872 | char *name = copy_string (body, p - body); | |
19873 | int argc = 0; | |
19874 | int argv_size = 1; | |
19875 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
19876 | ||
19877 | p++; | |
19878 | ||
19879 | p = consume_improper_spaces (p, body); | |
19880 | ||
19881 | /* Parse the formal argument list. */ | |
19882 | while (*p && *p != ')') | |
19883 | { | |
19884 | /* Find the extent of the current argument name. */ | |
19885 | const char *arg_start = p; | |
19886 | ||
19887 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
19888 | p++; | |
19889 | ||
19890 | if (! *p || p == arg_start) | |
4d3c2250 | 19891 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19892 | else |
19893 | { | |
19894 | /* Make sure argv has room for the new argument. */ | |
19895 | if (argc >= argv_size) | |
19896 | { | |
19897 | argv_size *= 2; | |
19898 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
19899 | } | |
19900 | ||
19901 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
19902 | } | |
19903 | ||
19904 | p = consume_improper_spaces (p, body); | |
19905 | ||
19906 | /* Consume the comma, if present. */ | |
19907 | if (*p == ',') | |
19908 | { | |
19909 | p++; | |
19910 | ||
19911 | p = consume_improper_spaces (p, body); | |
19912 | } | |
19913 | } | |
19914 | ||
19915 | if (*p == ')') | |
19916 | { | |
19917 | p++; | |
19918 | ||
19919 | if (*p == ' ') | |
19920 | /* Perfectly formed definition, no complaints. */ | |
19921 | macro_define_function (file, line, name, | |
6e70227d | 19922 | argc, (const char **) argv, |
2e276125 JB |
19923 | p + 1); |
19924 | else if (*p == '\0') | |
19925 | { | |
19926 | /* Complain, but do define it. */ | |
4d3c2250 | 19927 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 19928 | macro_define_function (file, line, name, |
6e70227d | 19929 | argc, (const char **) argv, |
2e276125 JB |
19930 | p); |
19931 | } | |
19932 | else | |
19933 | /* Just complain. */ | |
4d3c2250 | 19934 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19935 | } |
19936 | else | |
19937 | /* Just complain. */ | |
4d3c2250 | 19938 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19939 | |
19940 | xfree (name); | |
19941 | { | |
19942 | int i; | |
19943 | ||
19944 | for (i = 0; i < argc; i++) | |
19945 | xfree (argv[i]); | |
19946 | } | |
19947 | xfree (argv); | |
19948 | } | |
19949 | else | |
4d3c2250 | 19950 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
19951 | } |
19952 | ||
cf2c3c16 TT |
19953 | /* Skip some bytes from BYTES according to the form given in FORM. |
19954 | Returns the new pointer. */ | |
2e276125 | 19955 | |
d521ce57 TT |
19956 | static const gdb_byte * |
19957 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
19958 | enum dwarf_form form, |
19959 | unsigned int offset_size, | |
19960 | struct dwarf2_section_info *section) | |
2e276125 | 19961 | { |
cf2c3c16 | 19962 | unsigned int bytes_read; |
2e276125 | 19963 | |
cf2c3c16 | 19964 | switch (form) |
2e276125 | 19965 | { |
cf2c3c16 TT |
19966 | case DW_FORM_data1: |
19967 | case DW_FORM_flag: | |
19968 | ++bytes; | |
19969 | break; | |
19970 | ||
19971 | case DW_FORM_data2: | |
19972 | bytes += 2; | |
19973 | break; | |
19974 | ||
19975 | case DW_FORM_data4: | |
19976 | bytes += 4; | |
19977 | break; | |
19978 | ||
19979 | case DW_FORM_data8: | |
19980 | bytes += 8; | |
19981 | break; | |
19982 | ||
19983 | case DW_FORM_string: | |
19984 | read_direct_string (abfd, bytes, &bytes_read); | |
19985 | bytes += bytes_read; | |
19986 | break; | |
19987 | ||
19988 | case DW_FORM_sec_offset: | |
19989 | case DW_FORM_strp: | |
36586728 | 19990 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
19991 | bytes += offset_size; |
19992 | break; | |
19993 | ||
19994 | case DW_FORM_block: | |
19995 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
19996 | bytes += bytes_read; | |
19997 | break; | |
19998 | ||
19999 | case DW_FORM_block1: | |
20000 | bytes += 1 + read_1_byte (abfd, bytes); | |
20001 | break; | |
20002 | case DW_FORM_block2: | |
20003 | bytes += 2 + read_2_bytes (abfd, bytes); | |
20004 | break; | |
20005 | case DW_FORM_block4: | |
20006 | bytes += 4 + read_4_bytes (abfd, bytes); | |
20007 | break; | |
20008 | ||
20009 | case DW_FORM_sdata: | |
20010 | case DW_FORM_udata: | |
3019eac3 DE |
20011 | case DW_FORM_GNU_addr_index: |
20012 | case DW_FORM_GNU_str_index: | |
d521ce57 | 20013 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
20014 | if (bytes == NULL) |
20015 | { | |
20016 | dwarf2_section_buffer_overflow_complaint (section); | |
20017 | return NULL; | |
20018 | } | |
cf2c3c16 TT |
20019 | break; |
20020 | ||
20021 | default: | |
20022 | { | |
20023 | complain: | |
20024 | complaint (&symfile_complaints, | |
20025 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 20026 | form, get_section_name (section)); |
cf2c3c16 TT |
20027 | return NULL; |
20028 | } | |
2e276125 JB |
20029 | } |
20030 | ||
cf2c3c16 TT |
20031 | return bytes; |
20032 | } | |
757a13d0 | 20033 | |
cf2c3c16 TT |
20034 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
20035 | opcode. Returns an updated pointer to the macro data buffer; or, | |
20036 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 20037 | |
d521ce57 | 20038 | static const gdb_byte * |
cf2c3c16 | 20039 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
20040 | const gdb_byte **opcode_definitions, |
20041 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
20042 | bfd *abfd, |
20043 | unsigned int offset_size, | |
20044 | struct dwarf2_section_info *section) | |
20045 | { | |
20046 | unsigned int bytes_read, i; | |
20047 | unsigned long arg; | |
d521ce57 | 20048 | const gdb_byte *defn; |
2e276125 | 20049 | |
cf2c3c16 | 20050 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 20051 | { |
cf2c3c16 TT |
20052 | complaint (&symfile_complaints, |
20053 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
20054 | opcode); | |
20055 | return NULL; | |
20056 | } | |
2e276125 | 20057 | |
cf2c3c16 TT |
20058 | defn = opcode_definitions[opcode]; |
20059 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
20060 | defn += bytes_read; | |
2e276125 | 20061 | |
cf2c3c16 TT |
20062 | for (i = 0; i < arg; ++i) |
20063 | { | |
f664829e DE |
20064 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
20065 | section); | |
cf2c3c16 TT |
20066 | if (mac_ptr == NULL) |
20067 | { | |
20068 | /* skip_form_bytes already issued the complaint. */ | |
20069 | return NULL; | |
20070 | } | |
20071 | } | |
757a13d0 | 20072 | |
cf2c3c16 TT |
20073 | return mac_ptr; |
20074 | } | |
757a13d0 | 20075 | |
cf2c3c16 TT |
20076 | /* A helper function which parses the header of a macro section. |
20077 | If the macro section is the extended (for now called "GNU") type, | |
20078 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
20079 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 20080 | |
d521ce57 TT |
20081 | static const gdb_byte * |
20082 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 20083 | bfd *abfd, |
d521ce57 | 20084 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
20085 | unsigned int *offset_size, |
20086 | int section_is_gnu) | |
20087 | { | |
20088 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 20089 | |
cf2c3c16 TT |
20090 | if (section_is_gnu) |
20091 | { | |
20092 | unsigned int version, flags; | |
757a13d0 | 20093 | |
cf2c3c16 TT |
20094 | version = read_2_bytes (abfd, mac_ptr); |
20095 | if (version != 4) | |
20096 | { | |
20097 | complaint (&symfile_complaints, | |
20098 | _("unrecognized version `%d' in .debug_macro section"), | |
20099 | version); | |
20100 | return NULL; | |
20101 | } | |
20102 | mac_ptr += 2; | |
757a13d0 | 20103 | |
cf2c3c16 TT |
20104 | flags = read_1_byte (abfd, mac_ptr); |
20105 | ++mac_ptr; | |
20106 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 20107 | |
cf2c3c16 TT |
20108 | if ((flags & 2) != 0) |
20109 | /* We don't need the line table offset. */ | |
20110 | mac_ptr += *offset_size; | |
757a13d0 | 20111 | |
cf2c3c16 TT |
20112 | /* Vendor opcode descriptions. */ |
20113 | if ((flags & 4) != 0) | |
20114 | { | |
20115 | unsigned int i, count; | |
757a13d0 | 20116 | |
cf2c3c16 TT |
20117 | count = read_1_byte (abfd, mac_ptr); |
20118 | ++mac_ptr; | |
20119 | for (i = 0; i < count; ++i) | |
20120 | { | |
20121 | unsigned int opcode, bytes_read; | |
20122 | unsigned long arg; | |
20123 | ||
20124 | opcode = read_1_byte (abfd, mac_ptr); | |
20125 | ++mac_ptr; | |
20126 | opcode_definitions[opcode] = mac_ptr; | |
20127 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20128 | mac_ptr += bytes_read; | |
20129 | mac_ptr += arg; | |
20130 | } | |
757a13d0 | 20131 | } |
cf2c3c16 | 20132 | } |
757a13d0 | 20133 | |
cf2c3c16 TT |
20134 | return mac_ptr; |
20135 | } | |
757a13d0 | 20136 | |
cf2c3c16 | 20137 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 20138 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
20139 | |
20140 | static void | |
d521ce57 TT |
20141 | dwarf_decode_macro_bytes (bfd *abfd, |
20142 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 20143 | struct macro_source_file *current_file, |
15d034d0 | 20144 | struct line_header *lh, const char *comp_dir, |
cf2c3c16 | 20145 | struct dwarf2_section_info *section, |
36586728 | 20146 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 20147 | unsigned int offset_size, |
8fc3fc34 TT |
20148 | struct objfile *objfile, |
20149 | htab_t include_hash) | |
cf2c3c16 TT |
20150 | { |
20151 | enum dwarf_macro_record_type macinfo_type; | |
20152 | int at_commandline; | |
d521ce57 | 20153 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 20154 | |
cf2c3c16 TT |
20155 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
20156 | &offset_size, section_is_gnu); | |
20157 | if (mac_ptr == NULL) | |
20158 | { | |
20159 | /* We already issued a complaint. */ | |
20160 | return; | |
20161 | } | |
757a13d0 JK |
20162 | |
20163 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
20164 | GDB is still reading the definitions from command line. First | |
20165 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
20166 | to create CURRENT_FILE for the main source holding also the command line | |
20167 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
20168 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
20169 | ||
20170 | at_commandline = 1; | |
20171 | ||
20172 | do | |
20173 | { | |
20174 | /* Do we at least have room for a macinfo type byte? */ | |
20175 | if (mac_ptr >= mac_end) | |
20176 | { | |
f664829e | 20177 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
20178 | break; |
20179 | } | |
20180 | ||
20181 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
20182 | mac_ptr++; | |
20183 | ||
cf2c3c16 TT |
20184 | /* Note that we rely on the fact that the corresponding GNU and |
20185 | DWARF constants are the same. */ | |
757a13d0 JK |
20186 | switch (macinfo_type) |
20187 | { | |
20188 | /* A zero macinfo type indicates the end of the macro | |
20189 | information. */ | |
20190 | case 0: | |
20191 | break; | |
2e276125 | 20192 | |
cf2c3c16 TT |
20193 | case DW_MACRO_GNU_define: |
20194 | case DW_MACRO_GNU_undef: | |
20195 | case DW_MACRO_GNU_define_indirect: | |
20196 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
20197 | case DW_MACRO_GNU_define_indirect_alt: |
20198 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 20199 | { |
891d2f0b | 20200 | unsigned int bytes_read; |
2e276125 | 20201 | int line; |
d521ce57 | 20202 | const char *body; |
cf2c3c16 | 20203 | int is_define; |
2e276125 | 20204 | |
cf2c3c16 TT |
20205 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
20206 | mac_ptr += bytes_read; | |
20207 | ||
20208 | if (macinfo_type == DW_MACRO_GNU_define | |
20209 | || macinfo_type == DW_MACRO_GNU_undef) | |
20210 | { | |
20211 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
20212 | mac_ptr += bytes_read; | |
20213 | } | |
20214 | else | |
20215 | { | |
20216 | LONGEST str_offset; | |
20217 | ||
20218 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
20219 | mac_ptr += offset_size; | |
2e276125 | 20220 | |
36586728 | 20221 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
20222 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
20223 | || section_is_dwz) | |
36586728 TT |
20224 | { |
20225 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
20226 | ||
20227 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
20228 | } | |
20229 | else | |
20230 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
20231 | } |
20232 | ||
20233 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
20234 | || macinfo_type == DW_MACRO_GNU_define_indirect |
20235 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 20236 | if (! current_file) |
757a13d0 JK |
20237 | { |
20238 | /* DWARF violation as no main source is present. */ | |
20239 | complaint (&symfile_complaints, | |
20240 | _("debug info with no main source gives macro %s " | |
20241 | "on line %d: %s"), | |
cf2c3c16 TT |
20242 | is_define ? _("definition") : _("undefinition"), |
20243 | line, body); | |
757a13d0 JK |
20244 | break; |
20245 | } | |
3e43a32a MS |
20246 | if ((line == 0 && !at_commandline) |
20247 | || (line != 0 && at_commandline)) | |
4d3c2250 | 20248 | complaint (&symfile_complaints, |
757a13d0 JK |
20249 | _("debug info gives %s macro %s with %s line %d: %s"), |
20250 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 20251 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
20252 | line == 0 ? _("zero") : _("non-zero"), line, body); |
20253 | ||
cf2c3c16 | 20254 | if (is_define) |
757a13d0 | 20255 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
20256 | else |
20257 | { | |
20258 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
20259 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
20260 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
20261 | macro_undef (current_file, line, body); |
20262 | } | |
2e276125 JB |
20263 | } |
20264 | break; | |
20265 | ||
cf2c3c16 | 20266 | case DW_MACRO_GNU_start_file: |
2e276125 | 20267 | { |
891d2f0b | 20268 | unsigned int bytes_read; |
2e276125 JB |
20269 | int line, file; |
20270 | ||
20271 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20272 | mac_ptr += bytes_read; | |
20273 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20274 | mac_ptr += bytes_read; | |
20275 | ||
3e43a32a MS |
20276 | if ((line == 0 && !at_commandline) |
20277 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
20278 | complaint (&symfile_complaints, |
20279 | _("debug info gives source %d included " | |
20280 | "from %s at %s line %d"), | |
20281 | file, at_commandline ? _("command-line") : _("file"), | |
20282 | line == 0 ? _("zero") : _("non-zero"), line); | |
20283 | ||
20284 | if (at_commandline) | |
20285 | { | |
cf2c3c16 TT |
20286 | /* This DW_MACRO_GNU_start_file was executed in the |
20287 | pass one. */ | |
757a13d0 JK |
20288 | at_commandline = 0; |
20289 | } | |
20290 | else | |
20291 | current_file = macro_start_file (file, line, | |
20292 | current_file, comp_dir, | |
cf2c3c16 | 20293 | lh, objfile); |
2e276125 JB |
20294 | } |
20295 | break; | |
20296 | ||
cf2c3c16 | 20297 | case DW_MACRO_GNU_end_file: |
2e276125 | 20298 | if (! current_file) |
4d3c2250 | 20299 | complaint (&symfile_complaints, |
3e43a32a MS |
20300 | _("macro debug info has an unmatched " |
20301 | "`close_file' directive")); | |
2e276125 JB |
20302 | else |
20303 | { | |
20304 | current_file = current_file->included_by; | |
20305 | if (! current_file) | |
20306 | { | |
cf2c3c16 | 20307 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
20308 | |
20309 | /* GCC circa March 2002 doesn't produce the zero | |
20310 | type byte marking the end of the compilation | |
20311 | unit. Complain if it's not there, but exit no | |
20312 | matter what. */ | |
20313 | ||
20314 | /* Do we at least have room for a macinfo type byte? */ | |
20315 | if (mac_ptr >= mac_end) | |
20316 | { | |
f664829e | 20317 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
20318 | return; |
20319 | } | |
20320 | ||
20321 | /* We don't increment mac_ptr here, so this is just | |
20322 | a look-ahead. */ | |
20323 | next_type = read_1_byte (abfd, mac_ptr); | |
20324 | if (next_type != 0) | |
4d3c2250 | 20325 | complaint (&symfile_complaints, |
3e43a32a MS |
20326 | _("no terminating 0-type entry for " |
20327 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
20328 | |
20329 | return; | |
20330 | } | |
20331 | } | |
20332 | break; | |
20333 | ||
cf2c3c16 | 20334 | case DW_MACRO_GNU_transparent_include: |
36586728 | 20335 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
20336 | { |
20337 | LONGEST offset; | |
8fc3fc34 | 20338 | void **slot; |
a036ba48 TT |
20339 | bfd *include_bfd = abfd; |
20340 | struct dwarf2_section_info *include_section = section; | |
20341 | struct dwarf2_section_info alt_section; | |
d521ce57 | 20342 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 20343 | int is_dwz = section_is_dwz; |
d521ce57 | 20344 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
20345 | |
20346 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
20347 | mac_ptr += offset_size; | |
20348 | ||
a036ba48 TT |
20349 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
20350 | { | |
20351 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
20352 | ||
20353 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
20354 | &dwz->macro); | |
20355 | ||
a036ba48 | 20356 | include_section = &dwz->macro; |
a32a8923 | 20357 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
20358 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
20359 | is_dwz = 1; | |
20360 | } | |
20361 | ||
20362 | new_mac_ptr = include_section->buffer + offset; | |
20363 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
20364 | ||
8fc3fc34 TT |
20365 | if (*slot != NULL) |
20366 | { | |
20367 | /* This has actually happened; see | |
20368 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
20369 | complaint (&symfile_complaints, | |
20370 | _("recursive DW_MACRO_GNU_transparent_include in " | |
20371 | ".debug_macro section")); | |
20372 | } | |
20373 | else | |
20374 | { | |
d521ce57 | 20375 | *slot = (void *) new_mac_ptr; |
36586728 | 20376 | |
a036ba48 | 20377 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
36586728 | 20378 | include_mac_end, current_file, |
8fc3fc34 | 20379 | lh, comp_dir, |
36586728 | 20380 | section, section_is_gnu, is_dwz, |
8fc3fc34 TT |
20381 | offset_size, objfile, include_hash); |
20382 | ||
d521ce57 | 20383 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 20384 | } |
cf2c3c16 TT |
20385 | } |
20386 | break; | |
20387 | ||
2e276125 | 20388 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
20389 | if (!section_is_gnu) |
20390 | { | |
20391 | unsigned int bytes_read; | |
20392 | int constant; | |
2e276125 | 20393 | |
cf2c3c16 TT |
20394 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
20395 | mac_ptr += bytes_read; | |
20396 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20397 | mac_ptr += bytes_read; | |
2e276125 | 20398 | |
cf2c3c16 TT |
20399 | /* We don't recognize any vendor extensions. */ |
20400 | break; | |
20401 | } | |
20402 | /* FALLTHROUGH */ | |
20403 | ||
20404 | default: | |
20405 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 20406 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
20407 | section); |
20408 | if (mac_ptr == NULL) | |
20409 | return; | |
20410 | break; | |
2e276125 | 20411 | } |
757a13d0 | 20412 | } while (macinfo_type != 0); |
2e276125 | 20413 | } |
8e19ed76 | 20414 | |
cf2c3c16 | 20415 | static void |
09262596 | 20416 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
15d034d0 | 20417 | const char *comp_dir, int section_is_gnu) |
cf2c3c16 | 20418 | { |
bb5ed363 | 20419 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
20420 | struct line_header *lh = cu->line_header; |
20421 | bfd *abfd; | |
d521ce57 | 20422 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
20423 | struct macro_source_file *current_file = 0; |
20424 | enum dwarf_macro_record_type macinfo_type; | |
20425 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 20426 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 TT |
20427 | struct cleanup *cleanup; |
20428 | htab_t include_hash; | |
20429 | void **slot; | |
09262596 DE |
20430 | struct dwarf2_section_info *section; |
20431 | const char *section_name; | |
20432 | ||
20433 | if (cu->dwo_unit != NULL) | |
20434 | { | |
20435 | if (section_is_gnu) | |
20436 | { | |
20437 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
20438 | section_name = ".debug_macro.dwo"; | |
20439 | } | |
20440 | else | |
20441 | { | |
20442 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
20443 | section_name = ".debug_macinfo.dwo"; | |
20444 | } | |
20445 | } | |
20446 | else | |
20447 | { | |
20448 | if (section_is_gnu) | |
20449 | { | |
20450 | section = &dwarf2_per_objfile->macro; | |
20451 | section_name = ".debug_macro"; | |
20452 | } | |
20453 | else | |
20454 | { | |
20455 | section = &dwarf2_per_objfile->macinfo; | |
20456 | section_name = ".debug_macinfo"; | |
20457 | } | |
20458 | } | |
cf2c3c16 | 20459 | |
bb5ed363 | 20460 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
20461 | if (section->buffer == NULL) |
20462 | { | |
fceca515 | 20463 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
20464 | return; |
20465 | } | |
a32a8923 | 20466 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
20467 | |
20468 | /* First pass: Find the name of the base filename. | |
20469 | This filename is needed in order to process all macros whose definition | |
20470 | (or undefinition) comes from the command line. These macros are defined | |
20471 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
20472 | associated to the base file. | |
20473 | ||
20474 | To determine the base file name, we scan the macro definitions until we | |
20475 | reach the first DW_MACINFO_start_file entry. We then initialize | |
20476 | CURRENT_FILE accordingly so that any macro definition found before the | |
20477 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
20478 | ||
20479 | mac_ptr = section->buffer + offset; | |
20480 | mac_end = section->buffer + section->size; | |
20481 | ||
20482 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
20483 | &offset_size, section_is_gnu); | |
20484 | if (mac_ptr == NULL) | |
20485 | { | |
20486 | /* We already issued a complaint. */ | |
20487 | return; | |
20488 | } | |
20489 | ||
20490 | do | |
20491 | { | |
20492 | /* Do we at least have room for a macinfo type byte? */ | |
20493 | if (mac_ptr >= mac_end) | |
20494 | { | |
20495 | /* Complaint is printed during the second pass as GDB will probably | |
20496 | stop the first pass earlier upon finding | |
20497 | DW_MACINFO_start_file. */ | |
20498 | break; | |
20499 | } | |
20500 | ||
20501 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
20502 | mac_ptr++; | |
20503 | ||
20504 | /* Note that we rely on the fact that the corresponding GNU and | |
20505 | DWARF constants are the same. */ | |
20506 | switch (macinfo_type) | |
20507 | { | |
20508 | /* A zero macinfo type indicates the end of the macro | |
20509 | information. */ | |
20510 | case 0: | |
20511 | break; | |
20512 | ||
20513 | case DW_MACRO_GNU_define: | |
20514 | case DW_MACRO_GNU_undef: | |
20515 | /* Only skip the data by MAC_PTR. */ | |
20516 | { | |
20517 | unsigned int bytes_read; | |
20518 | ||
20519 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20520 | mac_ptr += bytes_read; | |
20521 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20522 | mac_ptr += bytes_read; | |
20523 | } | |
20524 | break; | |
20525 | ||
20526 | case DW_MACRO_GNU_start_file: | |
20527 | { | |
20528 | unsigned int bytes_read; | |
20529 | int line, file; | |
20530 | ||
20531 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20532 | mac_ptr += bytes_read; | |
20533 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20534 | mac_ptr += bytes_read; | |
20535 | ||
20536 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 20537 | comp_dir, lh, objfile); |
cf2c3c16 TT |
20538 | } |
20539 | break; | |
20540 | ||
20541 | case DW_MACRO_GNU_end_file: | |
20542 | /* No data to skip by MAC_PTR. */ | |
20543 | break; | |
20544 | ||
20545 | case DW_MACRO_GNU_define_indirect: | |
20546 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
20547 | case DW_MACRO_GNU_define_indirect_alt: |
20548 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
20549 | { |
20550 | unsigned int bytes_read; | |
20551 | ||
20552 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20553 | mac_ptr += bytes_read; | |
20554 | mac_ptr += offset_size; | |
20555 | } | |
20556 | break; | |
20557 | ||
20558 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 20559 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
20560 | /* Note that, according to the spec, a transparent include |
20561 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
20562 | skip this opcode. */ | |
20563 | mac_ptr += offset_size; | |
20564 | break; | |
20565 | ||
20566 | case DW_MACINFO_vendor_ext: | |
20567 | /* Only skip the data by MAC_PTR. */ | |
20568 | if (!section_is_gnu) | |
20569 | { | |
20570 | unsigned int bytes_read; | |
20571 | ||
20572 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20573 | mac_ptr += bytes_read; | |
20574 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20575 | mac_ptr += bytes_read; | |
20576 | } | |
20577 | /* FALLTHROUGH */ | |
20578 | ||
20579 | default: | |
20580 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 20581 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
20582 | section); |
20583 | if (mac_ptr == NULL) | |
20584 | return; | |
20585 | break; | |
20586 | } | |
20587 | } while (macinfo_type != 0 && current_file == NULL); | |
20588 | ||
20589 | /* Second pass: Process all entries. | |
20590 | ||
20591 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
20592 | command-line macro definitions/undefinitions. This flag is unset when we | |
20593 | reach the first DW_MACINFO_start_file entry. */ | |
20594 | ||
8fc3fc34 TT |
20595 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
20596 | NULL, xcalloc, xfree); | |
20597 | cleanup = make_cleanup_htab_delete (include_hash); | |
20598 | mac_ptr = section->buffer + offset; | |
20599 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
d521ce57 | 20600 | *slot = (void *) mac_ptr; |
8fc3fc34 | 20601 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
36586728 TT |
20602 | current_file, lh, comp_dir, section, |
20603 | section_is_gnu, 0, | |
8fc3fc34 TT |
20604 | offset_size, objfile, include_hash); |
20605 | do_cleanups (cleanup); | |
cf2c3c16 TT |
20606 | } |
20607 | ||
8e19ed76 | 20608 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 20609 | if so return true else false. */ |
380bca97 | 20610 | |
8e19ed76 | 20611 | static int |
6e5a29e1 | 20612 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
20613 | { |
20614 | return (attr == NULL ? 0 : | |
20615 | attr->form == DW_FORM_block1 | |
20616 | || attr->form == DW_FORM_block2 | |
20617 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
20618 | || attr->form == DW_FORM_block |
20619 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 20620 | } |
4c2df51b | 20621 | |
c6a0999f JB |
20622 | /* Return non-zero if ATTR's value is a section offset --- classes |
20623 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
20624 | You may use DW_UNSND (attr) to retrieve such offsets. | |
20625 | ||
20626 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
20627 | may have a value that belongs to more than one of these classes; it | |
20628 | would be ambiguous if we did, because we use the same forms for all | |
20629 | of them. */ | |
380bca97 | 20630 | |
3690dd37 | 20631 | static int |
6e5a29e1 | 20632 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
20633 | { |
20634 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
20635 | || attr->form == DW_FORM_data8 |
20636 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
20637 | } |
20638 | ||
3690dd37 JB |
20639 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
20640 | zero otherwise. When this function returns true, you can apply | |
20641 | dwarf2_get_attr_constant_value to it. | |
20642 | ||
20643 | However, note that for some attributes you must check | |
20644 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
20645 | and DW_FORM_data8 are members of both the constant class, and of | |
20646 | the classes that contain offsets into other debug sections | |
20647 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
20648 | that, if an attribute's can be either a constant or one of the | |
20649 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
20650 | taken as section offsets, not constants. */ | |
380bca97 | 20651 | |
3690dd37 | 20652 | static int |
6e5a29e1 | 20653 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
20654 | { |
20655 | switch (attr->form) | |
20656 | { | |
20657 | case DW_FORM_sdata: | |
20658 | case DW_FORM_udata: | |
20659 | case DW_FORM_data1: | |
20660 | case DW_FORM_data2: | |
20661 | case DW_FORM_data4: | |
20662 | case DW_FORM_data8: | |
20663 | return 1; | |
20664 | default: | |
20665 | return 0; | |
20666 | } | |
20667 | } | |
20668 | ||
7771576e SA |
20669 | |
20670 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
20671 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
20672 | ||
20673 | static int | |
6e5a29e1 | 20674 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
20675 | { |
20676 | switch (attr->form) | |
20677 | { | |
20678 | case DW_FORM_ref_addr: | |
20679 | case DW_FORM_ref1: | |
20680 | case DW_FORM_ref2: | |
20681 | case DW_FORM_ref4: | |
20682 | case DW_FORM_ref8: | |
20683 | case DW_FORM_ref_udata: | |
20684 | case DW_FORM_GNU_ref_alt: | |
20685 | return 1; | |
20686 | default: | |
20687 | return 0; | |
20688 | } | |
20689 | } | |
20690 | ||
3019eac3 DE |
20691 | /* Return the .debug_loc section to use for CU. |
20692 | For DWO files use .debug_loc.dwo. */ | |
20693 | ||
20694 | static struct dwarf2_section_info * | |
20695 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
20696 | { | |
20697 | if (cu->dwo_unit) | |
20698 | return &cu->dwo_unit->dwo_file->sections.loc; | |
20699 | return &dwarf2_per_objfile->loc; | |
20700 | } | |
20701 | ||
8cf6f0b1 TT |
20702 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
20703 | ||
20704 | static void | |
20705 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
20706 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 20707 | const struct attribute *attr) |
8cf6f0b1 | 20708 | { |
3019eac3 DE |
20709 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
20710 | ||
20711 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
20712 | |
20713 | baton->per_cu = cu->per_cu; | |
20714 | gdb_assert (baton->per_cu); | |
20715 | /* We don't know how long the location list is, but make sure we | |
20716 | don't run off the edge of the section. */ | |
3019eac3 DE |
20717 | baton->size = section->size - DW_UNSND (attr); |
20718 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 20719 | baton->base_address = cu->base_address; |
f664829e | 20720 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
20721 | } |
20722 | ||
4c2df51b | 20723 | static void |
ff39bb5e | 20724 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 20725 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 20726 | { |
bb5ed363 | 20727 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 20728 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 20729 | |
3690dd37 | 20730 | if (attr_form_is_section_offset (attr) |
3019eac3 | 20731 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
20732 | the section. If so, fall through to the complaint in the |
20733 | other branch. */ | |
3019eac3 | 20734 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 20735 | { |
0d53c4c4 | 20736 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 20737 | |
bb5ed363 | 20738 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 20739 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 20740 | |
8cf6f0b1 | 20741 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 20742 | |
d00adf39 | 20743 | if (cu->base_known == 0) |
0d53c4c4 | 20744 | complaint (&symfile_complaints, |
3e43a32a MS |
20745 | _("Location list used without " |
20746 | "specifying the CU base address.")); | |
4c2df51b | 20747 | |
f1e6e072 TT |
20748 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
20749 | ? dwarf2_loclist_block_index | |
20750 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
20751 | SYMBOL_LOCATION_BATON (sym) = baton; |
20752 | } | |
20753 | else | |
20754 | { | |
20755 | struct dwarf2_locexpr_baton *baton; | |
20756 | ||
bb5ed363 | 20757 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 20758 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
20759 | baton->per_cu = cu->per_cu; |
20760 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
20761 | |
20762 | if (attr_form_is_block (attr)) | |
20763 | { | |
20764 | /* Note that we're just copying the block's data pointer | |
20765 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
20766 | info_buffer for SYM's objfile; right now we never release |
20767 | that buffer, but when we do clean up properly this may | |
20768 | need to change. */ | |
0d53c4c4 DJ |
20769 | baton->size = DW_BLOCK (attr)->size; |
20770 | baton->data = DW_BLOCK (attr)->data; | |
20771 | } | |
20772 | else | |
20773 | { | |
20774 | dwarf2_invalid_attrib_class_complaint ("location description", | |
20775 | SYMBOL_NATURAL_NAME (sym)); | |
20776 | baton->size = 0; | |
0d53c4c4 | 20777 | } |
6e70227d | 20778 | |
f1e6e072 TT |
20779 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
20780 | ? dwarf2_locexpr_block_index | |
20781 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
20782 | SYMBOL_LOCATION_BATON (sym) = baton; |
20783 | } | |
4c2df51b | 20784 | } |
6502dd73 | 20785 | |
9aa1f1e3 TT |
20786 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
20787 | came from a separate debuginfo file, then the master objfile is | |
20788 | returned. */ | |
ae0d2f24 UW |
20789 | |
20790 | struct objfile * | |
20791 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
20792 | { | |
9291a0cd | 20793 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
20794 | |
20795 | /* Return the master objfile, so that we can report and look up the | |
20796 | correct file containing this variable. */ | |
20797 | if (objfile->separate_debug_objfile_backlink) | |
20798 | objfile = objfile->separate_debug_objfile_backlink; | |
20799 | ||
20800 | return objfile; | |
20801 | } | |
20802 | ||
96408a79 SA |
20803 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
20804 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
20805 | CU_HEADERP first. */ | |
20806 | ||
20807 | static const struct comp_unit_head * | |
20808 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
20809 | struct dwarf2_per_cu_data *per_cu) | |
20810 | { | |
d521ce57 | 20811 | const gdb_byte *info_ptr; |
96408a79 SA |
20812 | |
20813 | if (per_cu->cu) | |
20814 | return &per_cu->cu->header; | |
20815 | ||
8a0459fd | 20816 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
20817 | |
20818 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 20819 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
20820 | |
20821 | return cu_headerp; | |
20822 | } | |
20823 | ||
ae0d2f24 UW |
20824 | /* Return the address size given in the compilation unit header for CU. */ |
20825 | ||
98714339 | 20826 | int |
ae0d2f24 UW |
20827 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
20828 | { | |
96408a79 SA |
20829 | struct comp_unit_head cu_header_local; |
20830 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 20831 | |
96408a79 SA |
20832 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
20833 | ||
20834 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
20835 | } |
20836 | ||
9eae7c52 TT |
20837 | /* Return the offset size given in the compilation unit header for CU. */ |
20838 | ||
20839 | int | |
20840 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
20841 | { | |
96408a79 SA |
20842 | struct comp_unit_head cu_header_local; |
20843 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 20844 | |
96408a79 SA |
20845 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
20846 | ||
20847 | return cu_headerp->offset_size; | |
20848 | } | |
20849 | ||
20850 | /* See its dwarf2loc.h declaration. */ | |
20851 | ||
20852 | int | |
20853 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
20854 | { | |
20855 | struct comp_unit_head cu_header_local; | |
20856 | const struct comp_unit_head *cu_headerp; | |
20857 | ||
20858 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
20859 | ||
20860 | if (cu_headerp->version == 2) | |
20861 | return cu_headerp->addr_size; | |
20862 | else | |
20863 | return cu_headerp->offset_size; | |
181cebd4 JK |
20864 | } |
20865 | ||
9aa1f1e3 TT |
20866 | /* Return the text offset of the CU. The returned offset comes from |
20867 | this CU's objfile. If this objfile came from a separate debuginfo | |
20868 | file, then the offset may be different from the corresponding | |
20869 | offset in the parent objfile. */ | |
20870 | ||
20871 | CORE_ADDR | |
20872 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
20873 | { | |
bb3fa9d0 | 20874 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
20875 | |
20876 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
20877 | } | |
20878 | ||
348e048f DE |
20879 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
20880 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
20881 | |
20882 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 20883 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 20884 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
20885 | struct objfile *objfile) |
20886 | { | |
20887 | struct dwarf2_per_cu_data *this_cu; | |
20888 | int low, high; | |
36586728 | 20889 | const sect_offset *cu_off; |
ae038cb0 | 20890 | |
ae038cb0 DJ |
20891 | low = 0; |
20892 | high = dwarf2_per_objfile->n_comp_units - 1; | |
20893 | while (high > low) | |
20894 | { | |
36586728 | 20895 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 20896 | int mid = low + (high - low) / 2; |
9a619af0 | 20897 | |
36586728 TT |
20898 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
20899 | cu_off = &mid_cu->offset; | |
20900 | if (mid_cu->is_dwz > offset_in_dwz | |
20901 | || (mid_cu->is_dwz == offset_in_dwz | |
20902 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
20903 | high = mid; |
20904 | else | |
20905 | low = mid + 1; | |
20906 | } | |
20907 | gdb_assert (low == high); | |
36586728 TT |
20908 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
20909 | cu_off = &this_cu->offset; | |
20910 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 20911 | { |
36586728 | 20912 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
20913 | error (_("Dwarf Error: could not find partial DIE containing " |
20914 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 20915 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 20916 | |
b64f50a1 JK |
20917 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
20918 | <= offset.sect_off); | |
ae038cb0 DJ |
20919 | return dwarf2_per_objfile->all_comp_units[low-1]; |
20920 | } | |
20921 | else | |
20922 | { | |
20923 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
20924 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
20925 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
20926 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
20927 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
20928 | return this_cu; |
20929 | } | |
20930 | } | |
20931 | ||
23745b47 | 20932 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 20933 | |
9816fde3 | 20934 | static void |
23745b47 | 20935 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 20936 | { |
9816fde3 | 20937 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
20938 | per_cu->cu = cu; |
20939 | cu->per_cu = per_cu; | |
20940 | cu->objfile = per_cu->objfile; | |
93311388 | 20941 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
20942 | } |
20943 | ||
20944 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
20945 | ||
20946 | static void | |
95554aad TT |
20947 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
20948 | enum language pretend_language) | |
9816fde3 JK |
20949 | { |
20950 | struct attribute *attr; | |
20951 | ||
20952 | /* Set the language we're debugging. */ | |
20953 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
20954 | if (attr) | |
20955 | set_cu_language (DW_UNSND (attr), cu); | |
20956 | else | |
9cded63f | 20957 | { |
95554aad | 20958 | cu->language = pretend_language; |
9cded63f TT |
20959 | cu->language_defn = language_def (cu->language); |
20960 | } | |
dee91e82 DE |
20961 | |
20962 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
20963 | if (attr) | |
20964 | cu->producer = DW_STRING (attr); | |
93311388 DE |
20965 | } |
20966 | ||
ae038cb0 DJ |
20967 | /* Release one cached compilation unit, CU. We unlink it from the tree |
20968 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
20969 | the caller is responsible for that. |
20970 | NOTE: DATA is a void * because this function is also used as a | |
20971 | cleanup routine. */ | |
ae038cb0 DJ |
20972 | |
20973 | static void | |
68dc6402 | 20974 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
20975 | { |
20976 | struct dwarf2_cu *cu = data; | |
20977 | ||
23745b47 DE |
20978 | gdb_assert (cu->per_cu != NULL); |
20979 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
20980 | cu->per_cu = NULL; |
20981 | ||
20982 | obstack_free (&cu->comp_unit_obstack, NULL); | |
20983 | ||
20984 | xfree (cu); | |
20985 | } | |
20986 | ||
72bf9492 | 20987 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 20988 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 20989 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
20990 | |
20991 | static void | |
20992 | free_stack_comp_unit (void *data) | |
20993 | { | |
20994 | struct dwarf2_cu *cu = data; | |
20995 | ||
23745b47 DE |
20996 | gdb_assert (cu->per_cu != NULL); |
20997 | cu->per_cu->cu = NULL; | |
20998 | cu->per_cu = NULL; | |
20999 | ||
72bf9492 DJ |
21000 | obstack_free (&cu->comp_unit_obstack, NULL); |
21001 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
21002 | } |
21003 | ||
21004 | /* Free all cached compilation units. */ | |
21005 | ||
21006 | static void | |
21007 | free_cached_comp_units (void *data) | |
21008 | { | |
21009 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21010 | ||
21011 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21012 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21013 | while (per_cu != NULL) | |
21014 | { | |
21015 | struct dwarf2_per_cu_data *next_cu; | |
21016 | ||
21017 | next_cu = per_cu->cu->read_in_chain; | |
21018 | ||
68dc6402 | 21019 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21020 | *last_chain = next_cu; |
21021 | ||
21022 | per_cu = next_cu; | |
21023 | } | |
21024 | } | |
21025 | ||
21026 | /* Increase the age counter on each cached compilation unit, and free | |
21027 | any that are too old. */ | |
21028 | ||
21029 | static void | |
21030 | age_cached_comp_units (void) | |
21031 | { | |
21032 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21033 | ||
21034 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
21035 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21036 | while (per_cu != NULL) | |
21037 | { | |
21038 | per_cu->cu->last_used ++; | |
21039 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
21040 | dwarf2_mark (per_cu->cu); | |
21041 | per_cu = per_cu->cu->read_in_chain; | |
21042 | } | |
21043 | ||
21044 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21045 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21046 | while (per_cu != NULL) | |
21047 | { | |
21048 | struct dwarf2_per_cu_data *next_cu; | |
21049 | ||
21050 | next_cu = per_cu->cu->read_in_chain; | |
21051 | ||
21052 | if (!per_cu->cu->mark) | |
21053 | { | |
68dc6402 | 21054 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21055 | *last_chain = next_cu; |
21056 | } | |
21057 | else | |
21058 | last_chain = &per_cu->cu->read_in_chain; | |
21059 | ||
21060 | per_cu = next_cu; | |
21061 | } | |
21062 | } | |
21063 | ||
21064 | /* Remove a single compilation unit from the cache. */ | |
21065 | ||
21066 | static void | |
dee91e82 | 21067 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
21068 | { |
21069 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21070 | ||
21071 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21072 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21073 | while (per_cu != NULL) | |
21074 | { | |
21075 | struct dwarf2_per_cu_data *next_cu; | |
21076 | ||
21077 | next_cu = per_cu->cu->read_in_chain; | |
21078 | ||
dee91e82 | 21079 | if (per_cu == target_per_cu) |
ae038cb0 | 21080 | { |
68dc6402 | 21081 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 21082 | per_cu->cu = NULL; |
ae038cb0 DJ |
21083 | *last_chain = next_cu; |
21084 | break; | |
21085 | } | |
21086 | else | |
21087 | last_chain = &per_cu->cu->read_in_chain; | |
21088 | ||
21089 | per_cu = next_cu; | |
21090 | } | |
21091 | } | |
21092 | ||
fe3e1990 DJ |
21093 | /* Release all extra memory associated with OBJFILE. */ |
21094 | ||
21095 | void | |
21096 | dwarf2_free_objfile (struct objfile *objfile) | |
21097 | { | |
21098 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
21099 | ||
21100 | if (dwarf2_per_objfile == NULL) | |
21101 | return; | |
21102 | ||
21103 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
21104 | free_cached_comp_units (NULL); | |
21105 | ||
7b9f3c50 DE |
21106 | if (dwarf2_per_objfile->quick_file_names_table) |
21107 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 21108 | |
fe3e1990 DJ |
21109 | /* Everything else should be on the objfile obstack. */ |
21110 | } | |
21111 | ||
dee91e82 DE |
21112 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
21113 | We store these in a hash table separate from the DIEs, and preserve them | |
21114 | when the DIEs are flushed out of cache. | |
21115 | ||
21116 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 21117 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
21118 | or the type may come from a DWO file. Furthermore, while it's more logical |
21119 | to use per_cu->section+offset, with Fission the section with the data is in | |
21120 | the DWO file but we don't know that section at the point we need it. | |
21121 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
21122 | because we can enter the lookup routine, get_die_type_at_offset, from | |
21123 | outside this file, and thus won't necessarily have PER_CU->cu. | |
21124 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 21125 | |
dee91e82 | 21126 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 21127 | { |
dee91e82 | 21128 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 21129 | sect_offset offset; |
1c379e20 DJ |
21130 | struct type *type; |
21131 | }; | |
21132 | ||
dee91e82 | 21133 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
21134 | |
21135 | static hashval_t | |
dee91e82 | 21136 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 21137 | { |
dee91e82 | 21138 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 21139 | |
dee91e82 | 21140 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
21141 | } |
21142 | ||
dee91e82 | 21143 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
21144 | |
21145 | static int | |
dee91e82 | 21146 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 21147 | { |
dee91e82 DE |
21148 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
21149 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 21150 | |
dee91e82 DE |
21151 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
21152 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
21153 | } |
21154 | ||
21155 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
21156 | table if necessary. For convenience, return TYPE. |
21157 | ||
21158 | The DIEs reading must have careful ordering to: | |
21159 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
21160 | reading current DIE. | |
21161 | * Not trying to dereference contents of still incompletely read in types | |
21162 | while reading in other DIEs. | |
21163 | * Enable referencing still incompletely read in types just by a pointer to | |
21164 | the type without accessing its fields. | |
21165 | ||
21166 | Therefore caller should follow these rules: | |
21167 | * Try to fetch any prerequisite types we may need to build this DIE type | |
21168 | before building the type and calling set_die_type. | |
e71ec853 | 21169 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
21170 | possible before fetching more types to complete the current type. |
21171 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 21172 | |
f792889a | 21173 | static struct type * |
1c379e20 DJ |
21174 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
21175 | { | |
dee91e82 | 21176 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 21177 | struct objfile *objfile = cu->objfile; |
1c379e20 | 21178 | |
b4ba55a1 JB |
21179 | /* For Ada types, make sure that the gnat-specific data is always |
21180 | initialized (if not already set). There are a few types where | |
21181 | we should not be doing so, because the type-specific area is | |
21182 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
21183 | where the type-specific area is used to store the floatformat). | |
21184 | But this is not a problem, because the gnat-specific information | |
21185 | is actually not needed for these types. */ | |
21186 | if (need_gnat_info (cu) | |
21187 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
21188 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
21189 | && !HAVE_GNAT_AUX_INFO (type)) | |
21190 | INIT_GNAT_SPECIFIC (type); | |
21191 | ||
dee91e82 | 21192 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 21193 | { |
dee91e82 DE |
21194 | dwarf2_per_objfile->die_type_hash = |
21195 | htab_create_alloc_ex (127, | |
21196 | per_cu_offset_and_type_hash, | |
21197 | per_cu_offset_and_type_eq, | |
21198 | NULL, | |
21199 | &objfile->objfile_obstack, | |
21200 | hashtab_obstack_allocate, | |
21201 | dummy_obstack_deallocate); | |
f792889a | 21202 | } |
1c379e20 | 21203 | |
dee91e82 | 21204 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
21205 | ofs.offset = die->offset; |
21206 | ofs.type = type; | |
dee91e82 DE |
21207 | slot = (struct dwarf2_per_cu_offset_and_type **) |
21208 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
21209 | if (*slot) |
21210 | complaint (&symfile_complaints, | |
21211 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 21212 | die->offset.sect_off); |
673bfd45 | 21213 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 21214 | **slot = ofs; |
f792889a | 21215 | return type; |
1c379e20 DJ |
21216 | } |
21217 | ||
02142a6c DE |
21218 | /* Look up the type for the die at OFFSET in PER_CU in die_type_hash, |
21219 | or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
21220 | |
21221 | static struct type * | |
b64f50a1 | 21222 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 21223 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 21224 | { |
dee91e82 | 21225 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 21226 | |
dee91e82 | 21227 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 21228 | return NULL; |
1c379e20 | 21229 | |
dee91e82 | 21230 | ofs.per_cu = per_cu; |
673bfd45 | 21231 | ofs.offset = offset; |
dee91e82 | 21232 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
21233 | if (slot) |
21234 | return slot->type; | |
21235 | else | |
21236 | return NULL; | |
21237 | } | |
21238 | ||
02142a6c | 21239 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
21240 | or return NULL if DIE does not have a saved type. */ |
21241 | ||
21242 | static struct type * | |
21243 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
21244 | { | |
21245 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
21246 | } | |
21247 | ||
10b3939b DJ |
21248 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
21249 | ||
21250 | static void | |
21251 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
21252 | struct dwarf2_per_cu_data *ref_per_cu) | |
21253 | { | |
21254 | void **slot; | |
21255 | ||
21256 | if (cu->dependencies == NULL) | |
21257 | cu->dependencies | |
21258 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
21259 | NULL, &cu->comp_unit_obstack, | |
21260 | hashtab_obstack_allocate, | |
21261 | dummy_obstack_deallocate); | |
21262 | ||
21263 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
21264 | if (*slot == NULL) | |
21265 | *slot = ref_per_cu; | |
21266 | } | |
1c379e20 | 21267 | |
f504f079 DE |
21268 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
21269 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
21270 | cache that we must keep because we are keeping CU. */ |
21271 | ||
10b3939b DJ |
21272 | static int |
21273 | dwarf2_mark_helper (void **slot, void *data) | |
21274 | { | |
21275 | struct dwarf2_per_cu_data *per_cu; | |
21276 | ||
21277 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
21278 | |
21279 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
21280 | reading of the chain. As such dependencies remain valid it is not much | |
21281 | useful to track and undo them during QUIT cleanups. */ | |
21282 | if (per_cu->cu == NULL) | |
21283 | return 1; | |
21284 | ||
10b3939b DJ |
21285 | if (per_cu->cu->mark) |
21286 | return 1; | |
21287 | per_cu->cu->mark = 1; | |
21288 | ||
21289 | if (per_cu->cu->dependencies != NULL) | |
21290 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
21291 | ||
21292 | return 1; | |
21293 | } | |
21294 | ||
f504f079 DE |
21295 | /* Set the mark field in CU and in every other compilation unit in the |
21296 | cache that we must keep because we are keeping CU. */ | |
21297 | ||
ae038cb0 DJ |
21298 | static void |
21299 | dwarf2_mark (struct dwarf2_cu *cu) | |
21300 | { | |
21301 | if (cu->mark) | |
21302 | return; | |
21303 | cu->mark = 1; | |
10b3939b DJ |
21304 | if (cu->dependencies != NULL) |
21305 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
21306 | } |
21307 | ||
21308 | static void | |
21309 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
21310 | { | |
21311 | while (per_cu) | |
21312 | { | |
21313 | per_cu->cu->mark = 0; | |
21314 | per_cu = per_cu->cu->read_in_chain; | |
21315 | } | |
72bf9492 DJ |
21316 | } |
21317 | ||
72bf9492 DJ |
21318 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
21319 | is its offset in .debug_info for this objfile. */ | |
21320 | ||
21321 | static hashval_t | |
21322 | partial_die_hash (const void *item) | |
21323 | { | |
21324 | const struct partial_die_info *part_die = item; | |
9a619af0 | 21325 | |
b64f50a1 | 21326 | return part_die->offset.sect_off; |
72bf9492 DJ |
21327 | } |
21328 | ||
21329 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
21330 | are equal if they have the same offset. */ | |
21331 | ||
21332 | static int | |
21333 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
21334 | { | |
21335 | const struct partial_die_info *part_die_lhs = item_lhs; | |
21336 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 21337 | |
b64f50a1 | 21338 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
21339 | } |
21340 | ||
ae038cb0 DJ |
21341 | static struct cmd_list_element *set_dwarf2_cmdlist; |
21342 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
21343 | ||
21344 | static void | |
21345 | set_dwarf2_cmd (char *args, int from_tty) | |
21346 | { | |
21347 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
21348 | } | |
21349 | ||
21350 | static void | |
21351 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 21352 | { |
ae038cb0 DJ |
21353 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
21354 | } | |
21355 | ||
4bf44c1c | 21356 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
21357 | |
21358 | static void | |
c1bd65d0 | 21359 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
21360 | { |
21361 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 21362 | int ix; |
8b70b953 | 21363 | |
626f2d1c TT |
21364 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
21365 | cleaning up. */ | |
21366 | dwarf2_per_objfile = NULL; | |
21367 | ||
59b0c7c1 JB |
21368 | for (ix = 0; ix < data->n_comp_units; ++ix) |
21369 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 21370 | |
59b0c7c1 | 21371 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 21372 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
21373 | data->all_type_units[ix]->per_cu.imported_symtabs); |
21374 | xfree (data->all_type_units); | |
95554aad | 21375 | |
8b70b953 | 21376 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
21377 | |
21378 | if (data->dwo_files) | |
21379 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
21380 | if (data->dwp_file) |
21381 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
21382 | |
21383 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
21384 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
21385 | } |
21386 | ||
21387 | \f | |
ae2de4f8 | 21388 | /* The "save gdb-index" command. */ |
9291a0cd TT |
21389 | |
21390 | /* The contents of the hash table we create when building the string | |
21391 | table. */ | |
21392 | struct strtab_entry | |
21393 | { | |
21394 | offset_type offset; | |
21395 | const char *str; | |
21396 | }; | |
21397 | ||
559a7a62 JK |
21398 | /* Hash function for a strtab_entry. |
21399 | ||
21400 | Function is used only during write_hash_table so no index format backward | |
21401 | compatibility is needed. */ | |
b89be57b | 21402 | |
9291a0cd TT |
21403 | static hashval_t |
21404 | hash_strtab_entry (const void *e) | |
21405 | { | |
21406 | const struct strtab_entry *entry = e; | |
559a7a62 | 21407 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
21408 | } |
21409 | ||
21410 | /* Equality function for a strtab_entry. */ | |
b89be57b | 21411 | |
9291a0cd TT |
21412 | static int |
21413 | eq_strtab_entry (const void *a, const void *b) | |
21414 | { | |
21415 | const struct strtab_entry *ea = a; | |
21416 | const struct strtab_entry *eb = b; | |
21417 | return !strcmp (ea->str, eb->str); | |
21418 | } | |
21419 | ||
21420 | /* Create a strtab_entry hash table. */ | |
b89be57b | 21421 | |
9291a0cd TT |
21422 | static htab_t |
21423 | create_strtab (void) | |
21424 | { | |
21425 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
21426 | xfree, xcalloc, xfree); | |
21427 | } | |
21428 | ||
21429 | /* Add a string to the constant pool. Return the string's offset in | |
21430 | host order. */ | |
b89be57b | 21431 | |
9291a0cd TT |
21432 | static offset_type |
21433 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
21434 | { | |
21435 | void **slot; | |
21436 | struct strtab_entry entry; | |
21437 | struct strtab_entry *result; | |
21438 | ||
21439 | entry.str = str; | |
21440 | slot = htab_find_slot (table, &entry, INSERT); | |
21441 | if (*slot) | |
21442 | result = *slot; | |
21443 | else | |
21444 | { | |
21445 | result = XNEW (struct strtab_entry); | |
21446 | result->offset = obstack_object_size (cpool); | |
21447 | result->str = str; | |
21448 | obstack_grow_str0 (cpool, str); | |
21449 | *slot = result; | |
21450 | } | |
21451 | return result->offset; | |
21452 | } | |
21453 | ||
21454 | /* An entry in the symbol table. */ | |
21455 | struct symtab_index_entry | |
21456 | { | |
21457 | /* The name of the symbol. */ | |
21458 | const char *name; | |
21459 | /* The offset of the name in the constant pool. */ | |
21460 | offset_type index_offset; | |
21461 | /* A sorted vector of the indices of all the CUs that hold an object | |
21462 | of this name. */ | |
21463 | VEC (offset_type) *cu_indices; | |
21464 | }; | |
21465 | ||
21466 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
21467 | struct mapped_symtab | |
21468 | { | |
21469 | offset_type n_elements; | |
21470 | offset_type size; | |
21471 | struct symtab_index_entry **data; | |
21472 | }; | |
21473 | ||
21474 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 21475 | |
9291a0cd TT |
21476 | static hashval_t |
21477 | hash_symtab_entry (const void *e) | |
21478 | { | |
21479 | const struct symtab_index_entry *entry = e; | |
21480 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
21481 | sizeof (offset_type) * VEC_length (offset_type, | |
21482 | entry->cu_indices), | |
21483 | 0); | |
21484 | } | |
21485 | ||
21486 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 21487 | |
9291a0cd TT |
21488 | static int |
21489 | eq_symtab_entry (const void *a, const void *b) | |
21490 | { | |
21491 | const struct symtab_index_entry *ea = a; | |
21492 | const struct symtab_index_entry *eb = b; | |
21493 | int len = VEC_length (offset_type, ea->cu_indices); | |
21494 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
21495 | return 0; | |
21496 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
21497 | VEC_address (offset_type, eb->cu_indices), | |
21498 | sizeof (offset_type) * len); | |
21499 | } | |
21500 | ||
21501 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 21502 | |
9291a0cd TT |
21503 | static void |
21504 | delete_symtab_entry (void *p) | |
21505 | { | |
21506 | struct symtab_index_entry *entry = p; | |
21507 | VEC_free (offset_type, entry->cu_indices); | |
21508 | xfree (entry); | |
21509 | } | |
21510 | ||
21511 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 21512 | |
9291a0cd | 21513 | static htab_t |
3876f04e | 21514 | create_symbol_hash_table (void) |
9291a0cd TT |
21515 | { |
21516 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
21517 | delete_symtab_entry, xcalloc, xfree); | |
21518 | } | |
21519 | ||
21520 | /* Create a new mapped symtab object. */ | |
b89be57b | 21521 | |
9291a0cd TT |
21522 | static struct mapped_symtab * |
21523 | create_mapped_symtab (void) | |
21524 | { | |
21525 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
21526 | symtab->n_elements = 0; | |
21527 | symtab->size = 1024; | |
21528 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
21529 | return symtab; | |
21530 | } | |
21531 | ||
21532 | /* Destroy a mapped_symtab. */ | |
b89be57b | 21533 | |
9291a0cd TT |
21534 | static void |
21535 | cleanup_mapped_symtab (void *p) | |
21536 | { | |
21537 | struct mapped_symtab *symtab = p; | |
21538 | /* The contents of the array are freed when the other hash table is | |
21539 | destroyed. */ | |
21540 | xfree (symtab->data); | |
21541 | xfree (symtab); | |
21542 | } | |
21543 | ||
21544 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
21545 | the slot. |
21546 | ||
21547 | Function is used only during write_hash_table so no index format backward | |
21548 | compatibility is needed. */ | |
b89be57b | 21549 | |
9291a0cd TT |
21550 | static struct symtab_index_entry ** |
21551 | find_slot (struct mapped_symtab *symtab, const char *name) | |
21552 | { | |
559a7a62 | 21553 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
21554 | |
21555 | index = hash & (symtab->size - 1); | |
21556 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
21557 | ||
21558 | for (;;) | |
21559 | { | |
21560 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
21561 | return &symtab->data[index]; | |
21562 | index = (index + step) & (symtab->size - 1); | |
21563 | } | |
21564 | } | |
21565 | ||
21566 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 21567 | |
9291a0cd TT |
21568 | static void |
21569 | hash_expand (struct mapped_symtab *symtab) | |
21570 | { | |
21571 | offset_type old_size = symtab->size; | |
21572 | offset_type i; | |
21573 | struct symtab_index_entry **old_entries = symtab->data; | |
21574 | ||
21575 | symtab->size *= 2; | |
21576 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
21577 | ||
21578 | for (i = 0; i < old_size; ++i) | |
21579 | { | |
21580 | if (old_entries[i]) | |
21581 | { | |
21582 | struct symtab_index_entry **slot = find_slot (symtab, | |
21583 | old_entries[i]->name); | |
21584 | *slot = old_entries[i]; | |
21585 | } | |
21586 | } | |
21587 | ||
21588 | xfree (old_entries); | |
21589 | } | |
21590 | ||
156942c7 DE |
21591 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
21592 | CU_INDEX is the index of the CU in which the symbol appears. | |
21593 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 21594 | |
9291a0cd TT |
21595 | static void |
21596 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 21597 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
21598 | offset_type cu_index) |
21599 | { | |
21600 | struct symtab_index_entry **slot; | |
156942c7 | 21601 | offset_type cu_index_and_attrs; |
9291a0cd TT |
21602 | |
21603 | ++symtab->n_elements; | |
21604 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
21605 | hash_expand (symtab); | |
21606 | ||
21607 | slot = find_slot (symtab, name); | |
21608 | if (!*slot) | |
21609 | { | |
21610 | *slot = XNEW (struct symtab_index_entry); | |
21611 | (*slot)->name = name; | |
156942c7 | 21612 | /* index_offset is set later. */ |
9291a0cd TT |
21613 | (*slot)->cu_indices = NULL; |
21614 | } | |
156942c7 DE |
21615 | |
21616 | cu_index_and_attrs = 0; | |
21617 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
21618 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
21619 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
21620 | ||
21621 | /* We don't want to record an index value twice as we want to avoid the | |
21622 | duplication. | |
21623 | We process all global symbols and then all static symbols | |
21624 | (which would allow us to avoid the duplication by only having to check | |
21625 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
21626 | To keep things simple we don't worry about the duplication here and | |
21627 | sort and uniqufy the list after we've processed all symbols. */ | |
21628 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
21629 | } | |
21630 | ||
21631 | /* qsort helper routine for uniquify_cu_indices. */ | |
21632 | ||
21633 | static int | |
21634 | offset_type_compare (const void *ap, const void *bp) | |
21635 | { | |
21636 | offset_type a = *(offset_type *) ap; | |
21637 | offset_type b = *(offset_type *) bp; | |
21638 | ||
21639 | return (a > b) - (b > a); | |
21640 | } | |
21641 | ||
21642 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
21643 | ||
21644 | static void | |
21645 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
21646 | { | |
21647 | int i; | |
21648 | ||
21649 | for (i = 0; i < symtab->size; ++i) | |
21650 | { | |
21651 | struct symtab_index_entry *entry = symtab->data[i]; | |
21652 | ||
21653 | if (entry | |
21654 | && entry->cu_indices != NULL) | |
21655 | { | |
21656 | unsigned int next_to_insert, next_to_check; | |
21657 | offset_type last_value; | |
21658 | ||
21659 | qsort (VEC_address (offset_type, entry->cu_indices), | |
21660 | VEC_length (offset_type, entry->cu_indices), | |
21661 | sizeof (offset_type), offset_type_compare); | |
21662 | ||
21663 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
21664 | next_to_insert = 1; | |
21665 | for (next_to_check = 1; | |
21666 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
21667 | ++next_to_check) | |
21668 | { | |
21669 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
21670 | != last_value) | |
21671 | { | |
21672 | last_value = VEC_index (offset_type, entry->cu_indices, | |
21673 | next_to_check); | |
21674 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
21675 | last_value); | |
21676 | ++next_to_insert; | |
21677 | } | |
21678 | } | |
21679 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
21680 | } | |
21681 | } | |
9291a0cd TT |
21682 | } |
21683 | ||
21684 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 21685 | |
9291a0cd | 21686 | static offset_type |
3876f04e | 21687 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
21688 | struct symtab_index_entry *entry) |
21689 | { | |
21690 | void **slot; | |
21691 | ||
3876f04e | 21692 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
21693 | if (!*slot) |
21694 | { | |
21695 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
21696 | offset_type val = MAYBE_SWAP (len); | |
21697 | offset_type iter; | |
21698 | int i; | |
21699 | ||
21700 | *slot = entry; | |
21701 | entry->index_offset = obstack_object_size (cpool); | |
21702 | ||
21703 | obstack_grow (cpool, &val, sizeof (val)); | |
21704 | for (i = 0; | |
21705 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
21706 | ++i) | |
21707 | { | |
21708 | val = MAYBE_SWAP (iter); | |
21709 | obstack_grow (cpool, &val, sizeof (val)); | |
21710 | } | |
21711 | } | |
21712 | else | |
21713 | { | |
21714 | struct symtab_index_entry *old_entry = *slot; | |
21715 | entry->index_offset = old_entry->index_offset; | |
21716 | entry = old_entry; | |
21717 | } | |
21718 | return entry->index_offset; | |
21719 | } | |
21720 | ||
21721 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
21722 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 21723 | |
9291a0cd TT |
21724 | static void |
21725 | write_hash_table (struct mapped_symtab *symtab, | |
21726 | struct obstack *output, struct obstack *cpool) | |
21727 | { | |
21728 | offset_type i; | |
3876f04e | 21729 | htab_t symbol_hash_table; |
9291a0cd TT |
21730 | htab_t str_table; |
21731 | ||
3876f04e | 21732 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 21733 | str_table = create_strtab (); |
3876f04e | 21734 | |
9291a0cd TT |
21735 | /* We add all the index vectors to the constant pool first, to |
21736 | ensure alignment is ok. */ | |
21737 | for (i = 0; i < symtab->size; ++i) | |
21738 | { | |
21739 | if (symtab->data[i]) | |
3876f04e | 21740 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
21741 | } |
21742 | ||
21743 | /* Now write out the hash table. */ | |
21744 | for (i = 0; i < symtab->size; ++i) | |
21745 | { | |
21746 | offset_type str_off, vec_off; | |
21747 | ||
21748 | if (symtab->data[i]) | |
21749 | { | |
21750 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
21751 | vec_off = symtab->data[i]->index_offset; | |
21752 | } | |
21753 | else | |
21754 | { | |
21755 | /* While 0 is a valid constant pool index, it is not valid | |
21756 | to have 0 for both offsets. */ | |
21757 | str_off = 0; | |
21758 | vec_off = 0; | |
21759 | } | |
21760 | ||
21761 | str_off = MAYBE_SWAP (str_off); | |
21762 | vec_off = MAYBE_SWAP (vec_off); | |
21763 | ||
21764 | obstack_grow (output, &str_off, sizeof (str_off)); | |
21765 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
21766 | } | |
21767 | ||
21768 | htab_delete (str_table); | |
3876f04e | 21769 | htab_delete (symbol_hash_table); |
9291a0cd TT |
21770 | } |
21771 | ||
0a5429f6 DE |
21772 | /* Struct to map psymtab to CU index in the index file. */ |
21773 | struct psymtab_cu_index_map | |
21774 | { | |
21775 | struct partial_symtab *psymtab; | |
21776 | unsigned int cu_index; | |
21777 | }; | |
21778 | ||
21779 | static hashval_t | |
21780 | hash_psymtab_cu_index (const void *item) | |
21781 | { | |
21782 | const struct psymtab_cu_index_map *map = item; | |
21783 | ||
21784 | return htab_hash_pointer (map->psymtab); | |
21785 | } | |
21786 | ||
21787 | static int | |
21788 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
21789 | { | |
21790 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
21791 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
21792 | ||
21793 | return lhs->psymtab == rhs->psymtab; | |
21794 | } | |
21795 | ||
21796 | /* Helper struct for building the address table. */ | |
21797 | struct addrmap_index_data | |
21798 | { | |
21799 | struct objfile *objfile; | |
21800 | struct obstack *addr_obstack; | |
21801 | htab_t cu_index_htab; | |
21802 | ||
21803 | /* Non-zero if the previous_* fields are valid. | |
21804 | We can't write an entry until we see the next entry (since it is only then | |
21805 | that we know the end of the entry). */ | |
21806 | int previous_valid; | |
21807 | /* Index of the CU in the table of all CUs in the index file. */ | |
21808 | unsigned int previous_cu_index; | |
0963b4bd | 21809 | /* Start address of the CU. */ |
0a5429f6 DE |
21810 | CORE_ADDR previous_cu_start; |
21811 | }; | |
21812 | ||
21813 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 21814 | |
9291a0cd | 21815 | static void |
0a5429f6 DE |
21816 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
21817 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 21818 | { |
0a5429f6 | 21819 | offset_type cu_index_to_write; |
948f8e3d | 21820 | gdb_byte addr[8]; |
9291a0cd TT |
21821 | CORE_ADDR baseaddr; |
21822 | ||
21823 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
21824 | ||
0a5429f6 DE |
21825 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
21826 | obstack_grow (obstack, addr, 8); | |
21827 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
21828 | obstack_grow (obstack, addr, 8); | |
21829 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
21830 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
21831 | } | |
21832 | ||
21833 | /* Worker function for traversing an addrmap to build the address table. */ | |
21834 | ||
21835 | static int | |
21836 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
21837 | { | |
21838 | struct addrmap_index_data *data = datap; | |
21839 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
21840 | |
21841 | if (data->previous_valid) | |
21842 | add_address_entry (data->objfile, data->addr_obstack, | |
21843 | data->previous_cu_start, start_addr, | |
21844 | data->previous_cu_index); | |
21845 | ||
21846 | data->previous_cu_start = start_addr; | |
21847 | if (pst != NULL) | |
21848 | { | |
21849 | struct psymtab_cu_index_map find_map, *map; | |
21850 | find_map.psymtab = pst; | |
21851 | map = htab_find (data->cu_index_htab, &find_map); | |
21852 | gdb_assert (map != NULL); | |
21853 | data->previous_cu_index = map->cu_index; | |
21854 | data->previous_valid = 1; | |
21855 | } | |
21856 | else | |
21857 | data->previous_valid = 0; | |
21858 | ||
21859 | return 0; | |
21860 | } | |
21861 | ||
21862 | /* Write OBJFILE's address map to OBSTACK. | |
21863 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
21864 | in the index file. */ | |
21865 | ||
21866 | static void | |
21867 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
21868 | htab_t cu_index_htab) | |
21869 | { | |
21870 | struct addrmap_index_data addrmap_index_data; | |
21871 | ||
21872 | /* When writing the address table, we have to cope with the fact that | |
21873 | the addrmap iterator only provides the start of a region; we have to | |
21874 | wait until the next invocation to get the start of the next region. */ | |
21875 | ||
21876 | addrmap_index_data.objfile = objfile; | |
21877 | addrmap_index_data.addr_obstack = obstack; | |
21878 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
21879 | addrmap_index_data.previous_valid = 0; | |
21880 | ||
21881 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
21882 | &addrmap_index_data); | |
21883 | ||
21884 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
21885 | is valid, but we should still handle it. | |
21886 | The end address is recorded as the start of the next region, but that | |
21887 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
21888 | anyway. */ | |
21889 | if (addrmap_index_data.previous_valid) | |
21890 | add_address_entry (objfile, obstack, | |
21891 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
21892 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
21893 | } |
21894 | ||
156942c7 DE |
21895 | /* Return the symbol kind of PSYM. */ |
21896 | ||
21897 | static gdb_index_symbol_kind | |
21898 | symbol_kind (struct partial_symbol *psym) | |
21899 | { | |
21900 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
21901 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
21902 | ||
21903 | switch (domain) | |
21904 | { | |
21905 | case VAR_DOMAIN: | |
21906 | switch (aclass) | |
21907 | { | |
21908 | case LOC_BLOCK: | |
21909 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
21910 | case LOC_TYPEDEF: | |
21911 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
21912 | case LOC_COMPUTED: | |
21913 | case LOC_CONST_BYTES: | |
21914 | case LOC_OPTIMIZED_OUT: | |
21915 | case LOC_STATIC: | |
21916 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
21917 | case LOC_CONST: | |
21918 | /* Note: It's currently impossible to recognize psyms as enum values | |
21919 | short of reading the type info. For now punt. */ | |
21920 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
21921 | default: | |
21922 | /* There are other LOC_FOO values that one might want to classify | |
21923 | as variables, but dwarf2read.c doesn't currently use them. */ | |
21924 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
21925 | } | |
21926 | case STRUCT_DOMAIN: | |
21927 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
21928 | default: | |
21929 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
21930 | } | |
21931 | } | |
21932 | ||
9291a0cd | 21933 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 21934 | |
9291a0cd TT |
21935 | static void |
21936 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 21937 | htab_t psyms_seen, |
9291a0cd TT |
21938 | struct partial_symbol **psymp, |
21939 | int count, | |
987d643c TT |
21940 | offset_type cu_index, |
21941 | int is_static) | |
9291a0cd TT |
21942 | { |
21943 | for (; count-- > 0; ++psymp) | |
21944 | { | |
156942c7 DE |
21945 | struct partial_symbol *psym = *psymp; |
21946 | void **slot; | |
987d643c | 21947 | |
156942c7 | 21948 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 21949 | error (_("Ada is not currently supported by the index")); |
987d643c | 21950 | |
987d643c | 21951 | /* Only add a given psymbol once. */ |
156942c7 | 21952 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
21953 | if (!*slot) |
21954 | { | |
156942c7 DE |
21955 | gdb_index_symbol_kind kind = symbol_kind (psym); |
21956 | ||
21957 | *slot = psym; | |
21958 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
21959 | is_static, kind, cu_index); | |
987d643c | 21960 | } |
9291a0cd TT |
21961 | } |
21962 | } | |
21963 | ||
21964 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
21965 | exception if there is an error. */ | |
b89be57b | 21966 | |
9291a0cd TT |
21967 | static void |
21968 | write_obstack (FILE *file, struct obstack *obstack) | |
21969 | { | |
21970 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
21971 | file) | |
21972 | != obstack_object_size (obstack)) | |
21973 | error (_("couldn't data write to file")); | |
21974 | } | |
21975 | ||
21976 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 21977 | |
9291a0cd TT |
21978 | static void |
21979 | unlink_if_set (void *p) | |
21980 | { | |
21981 | char **filename = p; | |
21982 | if (*filename) | |
21983 | unlink (*filename); | |
21984 | } | |
21985 | ||
1fd400ff TT |
21986 | /* A helper struct used when iterating over debug_types. */ |
21987 | struct signatured_type_index_data | |
21988 | { | |
21989 | struct objfile *objfile; | |
21990 | struct mapped_symtab *symtab; | |
21991 | struct obstack *types_list; | |
987d643c | 21992 | htab_t psyms_seen; |
1fd400ff TT |
21993 | int cu_index; |
21994 | }; | |
21995 | ||
21996 | /* A helper function that writes a single signatured_type to an | |
21997 | obstack. */ | |
b89be57b | 21998 | |
1fd400ff TT |
21999 | static int |
22000 | write_one_signatured_type (void **slot, void *d) | |
22001 | { | |
22002 | struct signatured_type_index_data *info = d; | |
22003 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
0186c6a7 | 22004 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
22005 | gdb_byte val[8]; |
22006 | ||
22007 | write_psymbols (info->symtab, | |
987d643c | 22008 | info->psyms_seen, |
3e43a32a MS |
22009 | info->objfile->global_psymbols.list |
22010 | + psymtab->globals_offset, | |
987d643c TT |
22011 | psymtab->n_global_syms, info->cu_index, |
22012 | 0); | |
1fd400ff | 22013 | write_psymbols (info->symtab, |
987d643c | 22014 | info->psyms_seen, |
3e43a32a MS |
22015 | info->objfile->static_psymbols.list |
22016 | + psymtab->statics_offset, | |
987d643c TT |
22017 | psymtab->n_static_syms, info->cu_index, |
22018 | 1); | |
1fd400ff | 22019 | |
b64f50a1 JK |
22020 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22021 | entry->per_cu.offset.sect_off); | |
1fd400ff | 22022 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
22023 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22024 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
22025 | obstack_grow (info->types_list, val, 8); |
22026 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
22027 | obstack_grow (info->types_list, val, 8); | |
22028 | ||
22029 | ++info->cu_index; | |
22030 | ||
22031 | return 1; | |
22032 | } | |
22033 | ||
95554aad TT |
22034 | /* Recurse into all "included" dependencies and write their symbols as |
22035 | if they appeared in this psymtab. */ | |
22036 | ||
22037 | static void | |
22038 | recursively_write_psymbols (struct objfile *objfile, | |
22039 | struct partial_symtab *psymtab, | |
22040 | struct mapped_symtab *symtab, | |
22041 | htab_t psyms_seen, | |
22042 | offset_type cu_index) | |
22043 | { | |
22044 | int i; | |
22045 | ||
22046 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
22047 | if (psymtab->dependencies[i]->user != NULL) | |
22048 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
22049 | symtab, psyms_seen, cu_index); | |
22050 | ||
22051 | write_psymbols (symtab, | |
22052 | psyms_seen, | |
22053 | objfile->global_psymbols.list + psymtab->globals_offset, | |
22054 | psymtab->n_global_syms, cu_index, | |
22055 | 0); | |
22056 | write_psymbols (symtab, | |
22057 | psyms_seen, | |
22058 | objfile->static_psymbols.list + psymtab->statics_offset, | |
22059 | psymtab->n_static_syms, cu_index, | |
22060 | 1); | |
22061 | } | |
22062 | ||
9291a0cd | 22063 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 22064 | |
9291a0cd TT |
22065 | static void |
22066 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
22067 | { | |
22068 | struct cleanup *cleanup; | |
22069 | char *filename, *cleanup_filename; | |
1fd400ff TT |
22070 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
22071 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
22072 | int i; |
22073 | FILE *out_file; | |
22074 | struct mapped_symtab *symtab; | |
22075 | offset_type val, size_of_contents, total_len; | |
22076 | struct stat st; | |
987d643c | 22077 | htab_t psyms_seen; |
0a5429f6 DE |
22078 | htab_t cu_index_htab; |
22079 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 22080 | |
9291a0cd TT |
22081 | if (dwarf2_per_objfile->using_index) |
22082 | error (_("Cannot use an index to create the index")); | |
22083 | ||
8b70b953 TT |
22084 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
22085 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
22086 | ||
260b681b DE |
22087 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
22088 | return; | |
22089 | ||
4262abfb JK |
22090 | if (stat (objfile_name (objfile), &st) < 0) |
22091 | perror_with_name (objfile_name (objfile)); | |
9291a0cd | 22092 | |
4262abfb | 22093 | filename = concat (dir, SLASH_STRING, lbasename (objfile_name (objfile)), |
9291a0cd TT |
22094 | INDEX_SUFFIX, (char *) NULL); |
22095 | cleanup = make_cleanup (xfree, filename); | |
22096 | ||
614c279d | 22097 | out_file = gdb_fopen_cloexec (filename, "wb"); |
9291a0cd TT |
22098 | if (!out_file) |
22099 | error (_("Can't open `%s' for writing"), filename); | |
22100 | ||
22101 | cleanup_filename = filename; | |
22102 | make_cleanup (unlink_if_set, &cleanup_filename); | |
22103 | ||
22104 | symtab = create_mapped_symtab (); | |
22105 | make_cleanup (cleanup_mapped_symtab, symtab); | |
22106 | ||
22107 | obstack_init (&addr_obstack); | |
22108 | make_cleanup_obstack_free (&addr_obstack); | |
22109 | ||
22110 | obstack_init (&cu_list); | |
22111 | make_cleanup_obstack_free (&cu_list); | |
22112 | ||
1fd400ff TT |
22113 | obstack_init (&types_cu_list); |
22114 | make_cleanup_obstack_free (&types_cu_list); | |
22115 | ||
987d643c TT |
22116 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
22117 | NULL, xcalloc, xfree); | |
96408a79 | 22118 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 22119 | |
0a5429f6 DE |
22120 | /* While we're scanning CU's create a table that maps a psymtab pointer |
22121 | (which is what addrmap records) to its index (which is what is recorded | |
22122 | in the index file). This will later be needed to write the address | |
22123 | table. */ | |
22124 | cu_index_htab = htab_create_alloc (100, | |
22125 | hash_psymtab_cu_index, | |
22126 | eq_psymtab_cu_index, | |
22127 | NULL, xcalloc, xfree); | |
96408a79 | 22128 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
22129 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
22130 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
22131 | * dwarf2_per_objfile->n_comp_units); | |
22132 | make_cleanup (xfree, psymtab_cu_index_map); | |
22133 | ||
22134 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
22135 | work here. Also, the debug_types entries do not appear in |
22136 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
22137 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
22138 | { | |
3e43a32a MS |
22139 | struct dwarf2_per_cu_data *per_cu |
22140 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 22141 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 22142 | gdb_byte val[8]; |
0a5429f6 DE |
22143 | struct psymtab_cu_index_map *map; |
22144 | void **slot; | |
9291a0cd | 22145 | |
92fac807 JK |
22146 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
22147 | It may be referenced from a local scope but in such case it does not | |
22148 | need to be present in .gdb_index. */ | |
22149 | if (psymtab == NULL) | |
22150 | continue; | |
22151 | ||
95554aad TT |
22152 | if (psymtab->user == NULL) |
22153 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 22154 | |
0a5429f6 DE |
22155 | map = &psymtab_cu_index_map[i]; |
22156 | map->psymtab = psymtab; | |
22157 | map->cu_index = i; | |
22158 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
22159 | gdb_assert (slot != NULL); | |
22160 | gdb_assert (*slot == NULL); | |
22161 | *slot = map; | |
9291a0cd | 22162 | |
b64f50a1 JK |
22163 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22164 | per_cu->offset.sect_off); | |
9291a0cd | 22165 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 22166 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
22167 | obstack_grow (&cu_list, val, 8); |
22168 | } | |
22169 | ||
0a5429f6 DE |
22170 | /* Dump the address map. */ |
22171 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
22172 | ||
1fd400ff TT |
22173 | /* Write out the .debug_type entries, if any. */ |
22174 | if (dwarf2_per_objfile->signatured_types) | |
22175 | { | |
22176 | struct signatured_type_index_data sig_data; | |
22177 | ||
22178 | sig_data.objfile = objfile; | |
22179 | sig_data.symtab = symtab; | |
22180 | sig_data.types_list = &types_cu_list; | |
987d643c | 22181 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
22182 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
22183 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
22184 | write_one_signatured_type, &sig_data); | |
22185 | } | |
22186 | ||
156942c7 DE |
22187 | /* Now that we've processed all symbols we can shrink their cu_indices |
22188 | lists. */ | |
22189 | uniquify_cu_indices (symtab); | |
22190 | ||
9291a0cd TT |
22191 | obstack_init (&constant_pool); |
22192 | make_cleanup_obstack_free (&constant_pool); | |
22193 | obstack_init (&symtab_obstack); | |
22194 | make_cleanup_obstack_free (&symtab_obstack); | |
22195 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
22196 | ||
22197 | obstack_init (&contents); | |
22198 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 22199 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
22200 | total_len = size_of_contents; |
22201 | ||
22202 | /* The version number. */ | |
796a7ff8 | 22203 | val = MAYBE_SWAP (8); |
9291a0cd TT |
22204 | obstack_grow (&contents, &val, sizeof (val)); |
22205 | ||
22206 | /* The offset of the CU list from the start of the file. */ | |
22207 | val = MAYBE_SWAP (total_len); | |
22208 | obstack_grow (&contents, &val, sizeof (val)); | |
22209 | total_len += obstack_object_size (&cu_list); | |
22210 | ||
1fd400ff TT |
22211 | /* The offset of the types CU list from the start of the file. */ |
22212 | val = MAYBE_SWAP (total_len); | |
22213 | obstack_grow (&contents, &val, sizeof (val)); | |
22214 | total_len += obstack_object_size (&types_cu_list); | |
22215 | ||
9291a0cd TT |
22216 | /* The offset of the address table from the start of the file. */ |
22217 | val = MAYBE_SWAP (total_len); | |
22218 | obstack_grow (&contents, &val, sizeof (val)); | |
22219 | total_len += obstack_object_size (&addr_obstack); | |
22220 | ||
22221 | /* The offset of the symbol table from the start of the file. */ | |
22222 | val = MAYBE_SWAP (total_len); | |
22223 | obstack_grow (&contents, &val, sizeof (val)); | |
22224 | total_len += obstack_object_size (&symtab_obstack); | |
22225 | ||
22226 | /* The offset of the constant pool from the start of the file. */ | |
22227 | val = MAYBE_SWAP (total_len); | |
22228 | obstack_grow (&contents, &val, sizeof (val)); | |
22229 | total_len += obstack_object_size (&constant_pool); | |
22230 | ||
22231 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
22232 | ||
22233 | write_obstack (out_file, &contents); | |
22234 | write_obstack (out_file, &cu_list); | |
1fd400ff | 22235 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
22236 | write_obstack (out_file, &addr_obstack); |
22237 | write_obstack (out_file, &symtab_obstack); | |
22238 | write_obstack (out_file, &constant_pool); | |
22239 | ||
22240 | fclose (out_file); | |
22241 | ||
22242 | /* We want to keep the file, so we set cleanup_filename to NULL | |
22243 | here. See unlink_if_set. */ | |
22244 | cleanup_filename = NULL; | |
22245 | ||
22246 | do_cleanups (cleanup); | |
22247 | } | |
22248 | ||
90476074 TT |
22249 | /* Implementation of the `save gdb-index' command. |
22250 | ||
22251 | Note that the file format used by this command is documented in the | |
22252 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 22253 | |
9291a0cd TT |
22254 | static void |
22255 | save_gdb_index_command (char *arg, int from_tty) | |
22256 | { | |
22257 | struct objfile *objfile; | |
22258 | ||
22259 | if (!arg || !*arg) | |
96d19272 | 22260 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
22261 | |
22262 | ALL_OBJFILES (objfile) | |
22263 | { | |
22264 | struct stat st; | |
22265 | ||
22266 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 22267 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
22268 | continue; |
22269 | ||
22270 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
22271 | if (dwarf2_per_objfile) | |
22272 | { | |
22273 | volatile struct gdb_exception except; | |
22274 | ||
22275 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
22276 | { | |
22277 | write_psymtabs_to_index (objfile, arg); | |
22278 | } | |
22279 | if (except.reason < 0) | |
22280 | exception_fprintf (gdb_stderr, except, | |
22281 | _("Error while writing index for `%s': "), | |
4262abfb | 22282 | objfile_name (objfile)); |
9291a0cd TT |
22283 | } |
22284 | } | |
dce234bc PP |
22285 | } |
22286 | ||
9291a0cd TT |
22287 | \f |
22288 | ||
9eae7c52 TT |
22289 | int dwarf2_always_disassemble; |
22290 | ||
22291 | static void | |
22292 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
22293 | struct cmd_list_element *c, const char *value) | |
22294 | { | |
3e43a32a MS |
22295 | fprintf_filtered (file, |
22296 | _("Whether to always disassemble " | |
22297 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
22298 | value); |
22299 | } | |
22300 | ||
900e11f9 JK |
22301 | static void |
22302 | show_check_physname (struct ui_file *file, int from_tty, | |
22303 | struct cmd_list_element *c, const char *value) | |
22304 | { | |
22305 | fprintf_filtered (file, | |
22306 | _("Whether to check \"physname\" is %s.\n"), | |
22307 | value); | |
22308 | } | |
22309 | ||
6502dd73 DJ |
22310 | void _initialize_dwarf2_read (void); |
22311 | ||
22312 | void | |
22313 | _initialize_dwarf2_read (void) | |
22314 | { | |
96d19272 JK |
22315 | struct cmd_list_element *c; |
22316 | ||
dce234bc | 22317 | dwarf2_objfile_data_key |
c1bd65d0 | 22318 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 22319 | |
1bedd215 AC |
22320 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
22321 | Set DWARF 2 specific variables.\n\ | |
22322 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
22323 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
22324 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
22325 | ||
1bedd215 AC |
22326 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
22327 | Show DWARF 2 specific variables\n\ | |
22328 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
22329 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
22330 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
22331 | ||
22332 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
22333 | &dwarf2_max_cache_age, _("\ |
22334 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
22335 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
22336 | A higher limit means that cached compilation units will be stored\n\ | |
22337 | in memory longer, and more total memory will be used. Zero disables\n\ | |
22338 | caching, which can slow down startup."), | |
2c5b56ce | 22339 | NULL, |
920d2a44 | 22340 | show_dwarf2_max_cache_age, |
2c5b56ce | 22341 | &set_dwarf2_cmdlist, |
ae038cb0 | 22342 | &show_dwarf2_cmdlist); |
d97bc12b | 22343 | |
9eae7c52 TT |
22344 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
22345 | &dwarf2_always_disassemble, _("\ | |
22346 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
22347 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
22348 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
22349 | syntax. When disabled, expressions will be printed in a more\n\ | |
22350 | conversational style, when possible."), | |
22351 | NULL, | |
22352 | show_dwarf2_always_disassemble, | |
22353 | &set_dwarf2_cmdlist, | |
22354 | &show_dwarf2_cmdlist); | |
22355 | ||
45cfd468 DE |
22356 | add_setshow_boolean_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
22357 | Set debugging of the dwarf2 reader."), _("\ | |
22358 | Show debugging of the dwarf2 reader."), _("\ | |
22359 | When enabled, debugging messages are printed during dwarf2 reading\n\ | |
22360 | and symtab expansion."), | |
22361 | NULL, | |
22362 | NULL, | |
22363 | &setdebuglist, &showdebuglist); | |
22364 | ||
ccce17b0 | 22365 | add_setshow_zuinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
d97bc12b DE |
22366 | Set debugging of the dwarf2 DIE reader."), _("\ |
22367 | Show debugging of the dwarf2 DIE reader."), _("\ | |
22368 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
22369 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
22370 | NULL, |
22371 | NULL, | |
22372 | &setdebuglist, &showdebuglist); | |
9291a0cd | 22373 | |
900e11f9 JK |
22374 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
22375 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
22376 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
22377 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
22378 | the demangler."), | |
22379 | NULL, show_check_physname, | |
22380 | &setdebuglist, &showdebuglist); | |
22381 | ||
e615022a DE |
22382 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
22383 | no_class, &use_deprecated_index_sections, _("\ | |
22384 | Set whether to use deprecated gdb_index sections."), _("\ | |
22385 | Show whether to use deprecated gdb_index sections."), _("\ | |
22386 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
22387 | Normally they are ignored either because of a missing feature or\n\ | |
22388 | performance issue.\n\ | |
22389 | Warning: This option must be enabled before gdb reads the file."), | |
22390 | NULL, | |
22391 | NULL, | |
22392 | &setlist, &showlist); | |
22393 | ||
96d19272 | 22394 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 22395 | _("\ |
fc1a9d6e | 22396 | Save a gdb-index file.\n\ |
11570e71 | 22397 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
22398 | &save_cmdlist); |
22399 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
22400 | |
22401 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
22402 | &dwarf2_locexpr_funcs); | |
22403 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
22404 | &dwarf2_loclist_funcs); | |
22405 | ||
22406 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
22407 | &dwarf2_block_frame_base_locexpr_funcs); | |
22408 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
22409 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 22410 | } |