Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
32d0add0 | 3 | Copyright (C) 1994-2015 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c SS |
31 | #include "defs.h" |
32 | #include "bfd.h" | |
80626a55 | 33 | #include "elf-bfd.h" |
c906108c SS |
34 | #include "symtab.h" |
35 | #include "gdbtypes.h" | |
c906108c | 36 | #include "objfiles.h" |
fa8f86ff | 37 | #include "dwarf2.h" |
c906108c SS |
38 | #include "buildsym.h" |
39 | #include "demangle.h" | |
50f182aa | 40 | #include "gdb-demangle.h" |
c906108c | 41 | #include "expression.h" |
d5166ae1 | 42 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 43 | #include "macrotab.h" |
c906108c SS |
44 | #include "language.h" |
45 | #include "complaints.h" | |
357e46e7 | 46 | #include "bcache.h" |
4c2df51b DJ |
47 | #include "dwarf2expr.h" |
48 | #include "dwarf2loc.h" | |
9219021c | 49 | #include "cp-support.h" |
72bf9492 | 50 | #include "hashtab.h" |
ae038cb0 DJ |
51 | #include "command.h" |
52 | #include "gdbcmd.h" | |
edb3359d | 53 | #include "block.h" |
ff013f42 | 54 | #include "addrmap.h" |
94af9270 KS |
55 | #include "typeprint.h" |
56 | #include "jv-lang.h" | |
ccefe4c4 | 57 | #include "psympriv.h" |
53ce3c39 | 58 | #include <sys/stat.h> |
96d19272 | 59 | #include "completer.h" |
34eaf542 | 60 | #include "vec.h" |
98bfdba5 | 61 | #include "c-lang.h" |
a766d390 | 62 | #include "go-lang.h" |
98bfdba5 | 63 | #include "valprint.h" |
3019eac3 | 64 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 65 | #include "gdb/gdb-index.h" |
60d5a603 | 66 | #include <ctype.h> |
cbb099e8 | 67 | #include "gdb_bfd.h" |
4357ac6c | 68 | #include "f-lang.h" |
05cba821 | 69 | #include "source.h" |
614c279d | 70 | #include "filestuff.h" |
dc294be5 | 71 | #include "build-id.h" |
4c2df51b | 72 | |
c906108c | 73 | #include <fcntl.h> |
c906108c | 74 | #include <sys/types.h> |
d8151005 | 75 | |
34eaf542 TT |
76 | typedef struct symbol *symbolp; |
77 | DEF_VEC_P (symbolp); | |
78 | ||
73be47f5 DE |
79 | /* When == 1, print basic high level tracing messages. |
80 | When > 1, be more verbose. | |
b4f54984 DE |
81 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
82 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 83 | |
d97bc12b | 84 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 85 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 86 | |
27e0867f DE |
87 | /* When non-zero, dump line number entries as they are read in. */ |
88 | static unsigned int dwarf_line_debug = 0; | |
89 | ||
900e11f9 JK |
90 | /* When non-zero, cross-check physname against demangler. */ |
91 | static int check_physname = 0; | |
92 | ||
481860b3 | 93 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 94 | static int use_deprecated_index_sections = 0; |
481860b3 | 95 | |
6502dd73 DJ |
96 | static const struct objfile_data *dwarf2_objfile_data_key; |
97 | ||
f1e6e072 TT |
98 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
99 | ||
100 | static int dwarf2_locexpr_index; | |
101 | static int dwarf2_loclist_index; | |
102 | static int dwarf2_locexpr_block_index; | |
103 | static int dwarf2_loclist_block_index; | |
104 | ||
73869dc2 DE |
105 | /* A descriptor for dwarf sections. |
106 | ||
107 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
108 | scanned. BUFFER, READIN are filled in later when the section is read. | |
109 | If the section contained compressed data then SIZE is updated to record | |
110 | the uncompressed size of the section. | |
111 | ||
112 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
113 | creating the concept of virtual sections contained within a real section. | |
114 | In DWP V2 the sections of the input DWO files are concatenated together | |
115 | into one section, but section offsets are kept relative to the original | |
116 | input section. | |
117 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
118 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
119 | describe the virtual section. */ | |
120 | ||
dce234bc PP |
121 | struct dwarf2_section_info |
122 | { | |
73869dc2 DE |
123 | union |
124 | { | |
e5aa3347 | 125 | /* If this is a real section, the bfd section. */ |
73869dc2 DE |
126 | asection *asection; |
127 | /* If this is a virtual section, pointer to the containing ("real") | |
e5aa3347 | 128 | section. */ |
73869dc2 DE |
129 | struct dwarf2_section_info *containing_section; |
130 | } s; | |
19ac8c2e | 131 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 132 | const gdb_byte *buffer; |
73869dc2 | 133 | /* The size of the section, real or virtual. */ |
dce234bc | 134 | bfd_size_type size; |
73869dc2 DE |
135 | /* If this is a virtual section, the offset in the real section. |
136 | Only valid if is_virtual. */ | |
137 | bfd_size_type virtual_offset; | |
be391dca | 138 | /* True if we have tried to read this section. */ |
73869dc2 DE |
139 | char readin; |
140 | /* True if this is a virtual section, False otherwise. | |
141 | This specifies which of s.asection and s.containing_section to use. */ | |
142 | char is_virtual; | |
dce234bc PP |
143 | }; |
144 | ||
8b70b953 TT |
145 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
146 | DEF_VEC_O (dwarf2_section_info_def); | |
147 | ||
9291a0cd TT |
148 | /* All offsets in the index are of this type. It must be |
149 | architecture-independent. */ | |
150 | typedef uint32_t offset_type; | |
151 | ||
152 | DEF_VEC_I (offset_type); | |
153 | ||
156942c7 DE |
154 | /* Ensure only legit values are used. */ |
155 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
156 | do { \ | |
157 | gdb_assert ((unsigned int) (value) <= 1); \ | |
158 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
159 | } while (0) | |
160 | ||
161 | /* Ensure only legit values are used. */ | |
162 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
163 | do { \ | |
164 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
165 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
166 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
167 | } while (0) | |
168 | ||
169 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
170 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
171 | do { \ | |
172 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
173 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
174 | } while (0) | |
175 | ||
9291a0cd TT |
176 | /* A description of the mapped index. The file format is described in |
177 | a comment by the code that writes the index. */ | |
178 | struct mapped_index | |
179 | { | |
559a7a62 JK |
180 | /* Index data format version. */ |
181 | int version; | |
182 | ||
9291a0cd TT |
183 | /* The total length of the buffer. */ |
184 | off_t total_size; | |
b11b1f88 | 185 | |
9291a0cd TT |
186 | /* A pointer to the address table data. */ |
187 | const gdb_byte *address_table; | |
b11b1f88 | 188 | |
9291a0cd TT |
189 | /* Size of the address table data in bytes. */ |
190 | offset_type address_table_size; | |
b11b1f88 | 191 | |
3876f04e DE |
192 | /* The symbol table, implemented as a hash table. */ |
193 | const offset_type *symbol_table; | |
b11b1f88 | 194 | |
9291a0cd | 195 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 196 | offset_type symbol_table_slots; |
b11b1f88 | 197 | |
9291a0cd TT |
198 | /* A pointer to the constant pool. */ |
199 | const char *constant_pool; | |
200 | }; | |
201 | ||
95554aad TT |
202 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
203 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
204 | ||
52059ffd TT |
205 | struct tu_stats |
206 | { | |
207 | int nr_uniq_abbrev_tables; | |
208 | int nr_symtabs; | |
209 | int nr_symtab_sharers; | |
210 | int nr_stmt_less_type_units; | |
211 | int nr_all_type_units_reallocs; | |
212 | }; | |
213 | ||
9cdd5dbd DE |
214 | /* Collection of data recorded per objfile. |
215 | This hangs off of dwarf2_objfile_data_key. */ | |
216 | ||
6502dd73 DJ |
217 | struct dwarf2_per_objfile |
218 | { | |
dce234bc PP |
219 | struct dwarf2_section_info info; |
220 | struct dwarf2_section_info abbrev; | |
221 | struct dwarf2_section_info line; | |
dce234bc PP |
222 | struct dwarf2_section_info loc; |
223 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 224 | struct dwarf2_section_info macro; |
dce234bc PP |
225 | struct dwarf2_section_info str; |
226 | struct dwarf2_section_info ranges; | |
3019eac3 | 227 | struct dwarf2_section_info addr; |
dce234bc PP |
228 | struct dwarf2_section_info frame; |
229 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 230 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 231 | |
8b70b953 TT |
232 | VEC (dwarf2_section_info_def) *types; |
233 | ||
be391dca TT |
234 | /* Back link. */ |
235 | struct objfile *objfile; | |
236 | ||
d467dd73 | 237 | /* Table of all the compilation units. This is used to locate |
10b3939b | 238 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
239 | struct dwarf2_per_cu_data **all_comp_units; |
240 | ||
241 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
242 | int n_comp_units; | |
243 | ||
1fd400ff | 244 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 245 | int n_type_units; |
1fd400ff | 246 | |
6aa5f3a6 DE |
247 | /* The number of elements allocated in all_type_units. |
248 | If there are skeleton-less TUs, we add them to all_type_units lazily. */ | |
249 | int n_allocated_type_units; | |
250 | ||
a2ce51a0 DE |
251 | /* The .debug_types-related CUs (TUs). |
252 | This is stored in malloc space because we may realloc it. */ | |
b4dd5633 | 253 | struct signatured_type **all_type_units; |
1fd400ff | 254 | |
f4dc4d17 DE |
255 | /* Table of struct type_unit_group objects. |
256 | The hash key is the DW_AT_stmt_list value. */ | |
257 | htab_t type_unit_groups; | |
72dca2f5 | 258 | |
348e048f DE |
259 | /* A table mapping .debug_types signatures to its signatured_type entry. |
260 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
261 | htab_t signatured_types; | |
262 | ||
f4dc4d17 DE |
263 | /* Type unit statistics, to see how well the scaling improvements |
264 | are doing. */ | |
52059ffd | 265 | struct tu_stats tu_stats; |
f4dc4d17 DE |
266 | |
267 | /* A chain of compilation units that are currently read in, so that | |
268 | they can be freed later. */ | |
269 | struct dwarf2_per_cu_data *read_in_chain; | |
270 | ||
3019eac3 DE |
271 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
272 | This is NULL if the table hasn't been allocated yet. */ | |
273 | htab_t dwo_files; | |
274 | ||
80626a55 DE |
275 | /* Non-zero if we've check for whether there is a DWP file. */ |
276 | int dwp_checked; | |
277 | ||
278 | /* The DWP file if there is one, or NULL. */ | |
279 | struct dwp_file *dwp_file; | |
280 | ||
36586728 TT |
281 | /* The shared '.dwz' file, if one exists. This is used when the |
282 | original data was compressed using 'dwz -m'. */ | |
283 | struct dwz_file *dwz_file; | |
284 | ||
72dca2f5 FR |
285 | /* A flag indicating wether this objfile has a section loaded at a |
286 | VMA of 0. */ | |
287 | int has_section_at_zero; | |
9291a0cd | 288 | |
ae2de4f8 DE |
289 | /* True if we are using the mapped index, |
290 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
291 | unsigned char using_index; |
292 | ||
ae2de4f8 | 293 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 294 | struct mapped_index *index_table; |
98bfdba5 | 295 | |
7b9f3c50 | 296 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
297 | TUs typically share line table entries with a CU, so we maintain a |
298 | separate table of all line table entries to support the sharing. | |
299 | Note that while there can be way more TUs than CUs, we've already | |
300 | sorted all the TUs into "type unit groups", grouped by their | |
301 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
302 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
303 | htab_t quick_file_names_table; |
304 | ||
98bfdba5 PA |
305 | /* Set during partial symbol reading, to prevent queueing of full |
306 | symbols. */ | |
307 | int reading_partial_symbols; | |
673bfd45 | 308 | |
dee91e82 | 309 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 310 | This is NULL if not allocated yet. |
02142a6c | 311 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
dee91e82 | 312 | htab_t die_type_hash; |
95554aad TT |
313 | |
314 | /* The CUs we recently read. */ | |
315 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
527f3840 JK |
316 | |
317 | /* Table containing line_header indexed by offset and offset_in_dwz. */ | |
318 | htab_t line_header_hash; | |
6502dd73 DJ |
319 | }; |
320 | ||
321 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 322 | |
251d32d9 | 323 | /* Default names of the debugging sections. */ |
c906108c | 324 | |
233a11ab CS |
325 | /* Note that if the debugging section has been compressed, it might |
326 | have a name like .zdebug_info. */ | |
327 | ||
9cdd5dbd DE |
328 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
329 | { | |
251d32d9 TG |
330 | { ".debug_info", ".zdebug_info" }, |
331 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
332 | { ".debug_line", ".zdebug_line" }, | |
333 | { ".debug_loc", ".zdebug_loc" }, | |
334 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 335 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
336 | { ".debug_str", ".zdebug_str" }, |
337 | { ".debug_ranges", ".zdebug_ranges" }, | |
338 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 339 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
340 | { ".debug_frame", ".zdebug_frame" }, |
341 | { ".eh_frame", NULL }, | |
24d3216f TT |
342 | { ".gdb_index", ".zgdb_index" }, |
343 | 23 | |
251d32d9 | 344 | }; |
c906108c | 345 | |
80626a55 | 346 | /* List of DWO/DWP sections. */ |
3019eac3 | 347 | |
80626a55 | 348 | static const struct dwop_section_names |
3019eac3 DE |
349 | { |
350 | struct dwarf2_section_names abbrev_dwo; | |
351 | struct dwarf2_section_names info_dwo; | |
352 | struct dwarf2_section_names line_dwo; | |
353 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
354 | struct dwarf2_section_names macinfo_dwo; |
355 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
356 | struct dwarf2_section_names str_dwo; |
357 | struct dwarf2_section_names str_offsets_dwo; | |
358 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
359 | struct dwarf2_section_names cu_index; |
360 | struct dwarf2_section_names tu_index; | |
3019eac3 | 361 | } |
80626a55 | 362 | dwop_section_names = |
3019eac3 DE |
363 | { |
364 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
365 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
366 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
367 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
368 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
369 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
370 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
371 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
372 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
373 | { ".debug_cu_index", ".zdebug_cu_index" }, |
374 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
375 | }; |
376 | ||
c906108c SS |
377 | /* local data types */ |
378 | ||
107d2387 AC |
379 | /* The data in a compilation unit header, after target2host |
380 | translation, looks like this. */ | |
c906108c | 381 | struct comp_unit_head |
a738430d | 382 | { |
c764a876 | 383 | unsigned int length; |
a738430d | 384 | short version; |
a738430d MK |
385 | unsigned char addr_size; |
386 | unsigned char signed_addr_p; | |
b64f50a1 | 387 | sect_offset abbrev_offset; |
57349743 | 388 | |
a738430d MK |
389 | /* Size of file offsets; either 4 or 8. */ |
390 | unsigned int offset_size; | |
57349743 | 391 | |
a738430d MK |
392 | /* Size of the length field; either 4 or 12. */ |
393 | unsigned int initial_length_size; | |
57349743 | 394 | |
a738430d MK |
395 | /* Offset to the first byte of this compilation unit header in the |
396 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 397 | sect_offset offset; |
57349743 | 398 | |
d00adf39 DE |
399 | /* Offset to first die in this cu from the start of the cu. |
400 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 401 | cu_offset first_die_offset; |
a738430d | 402 | }; |
c906108c | 403 | |
3da10d80 KS |
404 | /* Type used for delaying computation of method physnames. |
405 | See comments for compute_delayed_physnames. */ | |
406 | struct delayed_method_info | |
407 | { | |
408 | /* The type to which the method is attached, i.e., its parent class. */ | |
409 | struct type *type; | |
410 | ||
411 | /* The index of the method in the type's function fieldlists. */ | |
412 | int fnfield_index; | |
413 | ||
414 | /* The index of the method in the fieldlist. */ | |
415 | int index; | |
416 | ||
417 | /* The name of the DIE. */ | |
418 | const char *name; | |
419 | ||
420 | /* The DIE associated with this method. */ | |
421 | struct die_info *die; | |
422 | }; | |
423 | ||
424 | typedef struct delayed_method_info delayed_method_info; | |
425 | DEF_VEC_O (delayed_method_info); | |
426 | ||
e7c27a73 DJ |
427 | /* Internal state when decoding a particular compilation unit. */ |
428 | struct dwarf2_cu | |
429 | { | |
430 | /* The objfile containing this compilation unit. */ | |
431 | struct objfile *objfile; | |
432 | ||
d00adf39 | 433 | /* The header of the compilation unit. */ |
e7c27a73 | 434 | struct comp_unit_head header; |
e142c38c | 435 | |
d00adf39 DE |
436 | /* Base address of this compilation unit. */ |
437 | CORE_ADDR base_address; | |
438 | ||
439 | /* Non-zero if base_address has been set. */ | |
440 | int base_known; | |
441 | ||
e142c38c DJ |
442 | /* The language we are debugging. */ |
443 | enum language language; | |
444 | const struct language_defn *language_defn; | |
445 | ||
b0f35d58 DL |
446 | const char *producer; |
447 | ||
e142c38c DJ |
448 | /* The generic symbol table building routines have separate lists for |
449 | file scope symbols and all all other scopes (local scopes). So | |
450 | we need to select the right one to pass to add_symbol_to_list(). | |
451 | We do it by keeping a pointer to the correct list in list_in_scope. | |
452 | ||
453 | FIXME: The original dwarf code just treated the file scope as the | |
454 | first local scope, and all other local scopes as nested local | |
455 | scopes, and worked fine. Check to see if we really need to | |
456 | distinguish these in buildsym.c. */ | |
457 | struct pending **list_in_scope; | |
458 | ||
433df2d4 DE |
459 | /* The abbrev table for this CU. |
460 | Normally this points to the abbrev table in the objfile. | |
461 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
462 | struct abbrev_table *abbrev_table; | |
72bf9492 | 463 | |
b64f50a1 JK |
464 | /* Hash table holding all the loaded partial DIEs |
465 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
466 | htab_t partial_dies; |
467 | ||
468 | /* Storage for things with the same lifetime as this read-in compilation | |
469 | unit, including partial DIEs. */ | |
470 | struct obstack comp_unit_obstack; | |
471 | ||
ae038cb0 DJ |
472 | /* When multiple dwarf2_cu structures are living in memory, this field |
473 | chains them all together, so that they can be released efficiently. | |
474 | We will probably also want a generation counter so that most-recently-used | |
475 | compilation units are cached... */ | |
476 | struct dwarf2_per_cu_data *read_in_chain; | |
477 | ||
69d751e3 | 478 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
479 | struct dwarf2_per_cu_data *per_cu; |
480 | ||
481 | /* How many compilation units ago was this CU last referenced? */ | |
482 | int last_used; | |
483 | ||
b64f50a1 JK |
484 | /* A hash table of DIE cu_offset for following references with |
485 | die_info->offset.sect_off as hash. */ | |
51545339 | 486 | htab_t die_hash; |
10b3939b DJ |
487 | |
488 | /* Full DIEs if read in. */ | |
489 | struct die_info *dies; | |
490 | ||
491 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
492 | units referenced by this one. Only set during full symbol processing; | |
493 | partial symbol tables do not have dependencies. */ | |
494 | htab_t dependencies; | |
495 | ||
cb1df416 DJ |
496 | /* Header data from the line table, during full symbol processing. */ |
497 | struct line_header *line_header; | |
498 | ||
3da10d80 KS |
499 | /* A list of methods which need to have physnames computed |
500 | after all type information has been read. */ | |
501 | VEC (delayed_method_info) *method_list; | |
502 | ||
96408a79 SA |
503 | /* To be copied to symtab->call_site_htab. */ |
504 | htab_t call_site_htab; | |
505 | ||
034e5797 DE |
506 | /* Non-NULL if this CU came from a DWO file. |
507 | There is an invariant here that is important to remember: | |
508 | Except for attributes copied from the top level DIE in the "main" | |
509 | (or "stub") file in preparation for reading the DWO file | |
510 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
511 | Either there isn't a DWO file (in which case this is NULL and the point | |
512 | is moot), or there is and either we're not going to read it (in which | |
513 | case this is NULL) or there is and we are reading it (in which case this | |
514 | is non-NULL). */ | |
3019eac3 DE |
515 | struct dwo_unit *dwo_unit; |
516 | ||
517 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
518 | (zero is a valid value though). | |
1dbab08b | 519 | Note this value comes from the Fission stub CU/TU's DIE. */ |
3019eac3 DE |
520 | ULONGEST addr_base; |
521 | ||
2e3cf129 DE |
522 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
523 | (zero is a valid value though). | |
1dbab08b | 524 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 525 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
526 | be used without needing to know whether DWO files are in use or not. |
527 | N.B. This does not apply to DW_AT_ranges appearing in | |
528 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
529 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
530 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
531 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
532 | ULONGEST ranges_base; |
533 | ||
ae038cb0 DJ |
534 | /* Mark used when releasing cached dies. */ |
535 | unsigned int mark : 1; | |
536 | ||
8be455d7 JK |
537 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
538 | This test is imperfect as there may exist optimized debug code not using | |
539 | any location list and still facing inlining issues if handled as | |
540 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 541 | unsigned int has_loclist : 1; |
ba919b58 | 542 | |
1b80a9fa JK |
543 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
544 | if all the producer_is_* fields are valid. This information is cached | |
545 | because profiling CU expansion showed excessive time spent in | |
546 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
547 | unsigned int checked_producer : 1; |
548 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 549 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 550 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
551 | |
552 | /* When set, the file that we're processing is known to have | |
553 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
554 | this information, but later versions do. */ | |
555 | ||
556 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
557 | }; |
558 | ||
10b3939b DJ |
559 | /* Persistent data held for a compilation unit, even when not |
560 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 561 | read_symtab_private field of the psymtab. */ |
10b3939b | 562 | |
ae038cb0 DJ |
563 | struct dwarf2_per_cu_data |
564 | { | |
36586728 | 565 | /* The start offset and length of this compilation unit. |
45452591 | 566 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
567 | initial_length_size. |
568 | If the DIE refers to a DWO file, this is always of the original die, | |
569 | not the DWO file. */ | |
b64f50a1 | 570 | sect_offset offset; |
36586728 | 571 | unsigned int length; |
ae038cb0 DJ |
572 | |
573 | /* Flag indicating this compilation unit will be read in before | |
574 | any of the current compilation units are processed. */ | |
c764a876 | 575 | unsigned int queued : 1; |
ae038cb0 | 576 | |
0d99eb77 DE |
577 | /* This flag will be set when reading partial DIEs if we need to load |
578 | absolutely all DIEs for this compilation unit, instead of just the ones | |
579 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
580 | hash table and don't find it. */ |
581 | unsigned int load_all_dies : 1; | |
582 | ||
0186c6a7 DE |
583 | /* Non-zero if this CU is from .debug_types. |
584 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
585 | this is non-zero. */ | |
3019eac3 DE |
586 | unsigned int is_debug_types : 1; |
587 | ||
36586728 TT |
588 | /* Non-zero if this CU is from the .dwz file. */ |
589 | unsigned int is_dwz : 1; | |
590 | ||
a2ce51a0 DE |
591 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
592 | This flag is only valid if is_debug_types is true. | |
593 | We can't read a CU directly from a DWO file: There are required | |
594 | attributes in the stub. */ | |
595 | unsigned int reading_dwo_directly : 1; | |
596 | ||
7ee85ab1 DE |
597 | /* Non-zero if the TU has been read. |
598 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
599 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
600 | fetching them from random other DWOs (due to comdat folding). | |
601 | If the TU has already been read, the optimization is unnecessary | |
602 | (and unwise - we don't want to change where gdb thinks the TU lives | |
603 | "midflight"). | |
604 | This flag is only valid if is_debug_types is true. */ | |
605 | unsigned int tu_read : 1; | |
606 | ||
3019eac3 DE |
607 | /* The section this CU/TU lives in. |
608 | If the DIE refers to a DWO file, this is always the original die, | |
609 | not the DWO file. */ | |
8a0459fd | 610 | struct dwarf2_section_info *section; |
348e048f | 611 | |
17ea53c3 JK |
612 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
613 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 614 | struct dwarf2_cu *cu; |
1c379e20 | 615 | |
9cdd5dbd DE |
616 | /* The corresponding objfile. |
617 | Normally we can get the objfile from dwarf2_per_objfile. | |
618 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
619 | struct objfile *objfile; |
620 | ||
fffbe6a8 YQ |
621 | /* When dwarf2_per_objfile->using_index is true, the 'quick' field |
622 | is active. Otherwise, the 'psymtab' field is active. */ | |
9291a0cd TT |
623 | union |
624 | { | |
625 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 626 | or NULL for unread partial units. */ |
9291a0cd TT |
627 | struct partial_symtab *psymtab; |
628 | ||
629 | /* Data needed by the "quick" functions. */ | |
630 | struct dwarf2_per_cu_quick_data *quick; | |
631 | } v; | |
95554aad | 632 | |
796a7ff8 DE |
633 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
634 | while reading psymtabs, used to compute the psymtab dependencies, | |
635 | and then cleared. Then it is filled in again while reading full | |
636 | symbols, and only deleted when the objfile is destroyed. | |
637 | ||
638 | This is also used to work around a difference between the way gold | |
639 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
640 | is a gold bug. For symbols coming from TUs, gold records in the index | |
641 | the CU that includes the TU instead of the TU itself. This breaks | |
642 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
643 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
644 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
645 | we need to look in TU Z to find X. Fortunately, this is akin to | |
646 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
647 | .gdb_index version <=7 this also records the TUs that the CU referred | |
648 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
649 | indices so we only pay a price for gold generated indices. |
650 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 651 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
652 | }; |
653 | ||
348e048f DE |
654 | /* Entry in the signatured_types hash table. */ |
655 | ||
656 | struct signatured_type | |
657 | { | |
42e7ad6c | 658 | /* The "per_cu" object of this type. |
ac9ec31b | 659 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
660 | N.B.: This is the first member so that it's easy to convert pointers |
661 | between them. */ | |
662 | struct dwarf2_per_cu_data per_cu; | |
663 | ||
3019eac3 | 664 | /* The type's signature. */ |
348e048f DE |
665 | ULONGEST signature; |
666 | ||
3019eac3 | 667 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
668 | If this TU is a DWO stub and the definition lives in a DWO file |
669 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
670 | cu_offset type_offset_in_tu; |
671 | ||
672 | /* Offset in the section of the type's DIE. | |
673 | If the definition lives in a DWO file, this is the offset in the | |
674 | .debug_types.dwo section. | |
675 | The value is zero until the actual value is known. | |
676 | Zero is otherwise not a valid section offset. */ | |
677 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
678 | |
679 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
680 | can share them. This points to the containing symtab. */ | |
681 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
682 | |
683 | /* The type. | |
684 | The first time we encounter this type we fully read it in and install it | |
685 | in the symbol tables. Subsequent times we only need the type. */ | |
686 | struct type *type; | |
a2ce51a0 DE |
687 | |
688 | /* Containing DWO unit. | |
689 | This field is valid iff per_cu.reading_dwo_directly. */ | |
690 | struct dwo_unit *dwo_unit; | |
348e048f DE |
691 | }; |
692 | ||
0186c6a7 DE |
693 | typedef struct signatured_type *sig_type_ptr; |
694 | DEF_VEC_P (sig_type_ptr); | |
695 | ||
094b34ac DE |
696 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
697 | This includes type_unit_group and quick_file_names. */ | |
698 | ||
699 | struct stmt_list_hash | |
700 | { | |
701 | /* The DWO unit this table is from or NULL if there is none. */ | |
702 | struct dwo_unit *dwo_unit; | |
703 | ||
704 | /* Offset in .debug_line or .debug_line.dwo. */ | |
705 | sect_offset line_offset; | |
706 | }; | |
707 | ||
f4dc4d17 DE |
708 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
709 | an object of this type. */ | |
710 | ||
711 | struct type_unit_group | |
712 | { | |
0186c6a7 | 713 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
714 | To simplify things we create an artificial CU that "includes" all the |
715 | type units using this stmt_list so that the rest of the code still has | |
716 | a "per_cu" handle on the symtab. | |
717 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 718 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
719 | struct dwarf2_per_cu_data per_cu; |
720 | ||
0186c6a7 DE |
721 | /* The TUs that share this DW_AT_stmt_list entry. |
722 | This is added to while parsing type units to build partial symtabs, | |
723 | and is deleted afterwards and not used again. */ | |
724 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 725 | |
43f3e411 | 726 | /* The compunit symtab. |
094b34ac | 727 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
728 | so we create an essentially anonymous symtab as the compunit symtab. */ |
729 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 730 | |
094b34ac DE |
731 | /* The data used to construct the hash key. */ |
732 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
733 | |
734 | /* The number of symtabs from the line header. | |
735 | The value here must match line_header.num_file_names. */ | |
736 | unsigned int num_symtabs; | |
737 | ||
738 | /* The symbol tables for this TU (obtained from the files listed in | |
739 | DW_AT_stmt_list). | |
740 | WARNING: The order of entries here must match the order of entries | |
741 | in the line header. After the first TU using this type_unit_group, the | |
742 | line header for the subsequent TUs is recreated from this. This is done | |
743 | because we need to use the same symtabs for each TU using the same | |
744 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
745 | there's no guarantee the line header doesn't have duplicate entries. */ | |
746 | struct symtab **symtabs; | |
747 | }; | |
748 | ||
73869dc2 | 749 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
750 | |
751 | struct dwo_sections | |
752 | { | |
753 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
754 | struct dwarf2_section_info line; |
755 | struct dwarf2_section_info loc; | |
09262596 DE |
756 | struct dwarf2_section_info macinfo; |
757 | struct dwarf2_section_info macro; | |
3019eac3 DE |
758 | struct dwarf2_section_info str; |
759 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
760 | /* In the case of a virtual DWO file, these two are unused. */ |
761 | struct dwarf2_section_info info; | |
3019eac3 DE |
762 | VEC (dwarf2_section_info_def) *types; |
763 | }; | |
764 | ||
c88ee1f0 | 765 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
766 | |
767 | struct dwo_unit | |
768 | { | |
769 | /* Backlink to the containing struct dwo_file. */ | |
770 | struct dwo_file *dwo_file; | |
771 | ||
772 | /* The "id" that distinguishes this CU/TU. | |
773 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
774 | Since signatures came first, we stick with it for consistency. */ | |
775 | ULONGEST signature; | |
776 | ||
777 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 778 | struct dwarf2_section_info *section; |
3019eac3 | 779 | |
19ac8c2e | 780 | /* Same as dwarf2_per_cu_data:{offset,length} but in the DWO section. */ |
3019eac3 DE |
781 | sect_offset offset; |
782 | unsigned int length; | |
783 | ||
784 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
785 | cu_offset type_offset_in_tu; | |
786 | }; | |
787 | ||
73869dc2 DE |
788 | /* include/dwarf2.h defines the DWP section codes. |
789 | It defines a max value but it doesn't define a min value, which we | |
790 | use for error checking, so provide one. */ | |
791 | ||
792 | enum dwp_v2_section_ids | |
793 | { | |
794 | DW_SECT_MIN = 1 | |
795 | }; | |
796 | ||
80626a55 | 797 | /* Data for one DWO file. |
57d63ce2 DE |
798 | |
799 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
800 | appears in a DWP file). DWP files don't really have DWO files per se - | |
801 | comdat folding of types "loses" the DWO file they came from, and from | |
802 | a high level view DWP files appear to contain a mass of random types. | |
803 | However, to maintain consistency with the non-DWP case we pretend DWP | |
804 | files contain virtual DWO files, and we assign each TU with one virtual | |
805 | DWO file (generally based on the line and abbrev section offsets - | |
806 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
807 | |
808 | struct dwo_file | |
809 | { | |
0ac5b59e | 810 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
811 | For virtual DWO files the name is constructed from the section offsets |
812 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
813 | from related CU+TUs. */ | |
0ac5b59e DE |
814 | const char *dwo_name; |
815 | ||
816 | /* The DW_AT_comp_dir attribute. */ | |
817 | const char *comp_dir; | |
3019eac3 | 818 | |
80626a55 DE |
819 | /* The bfd, when the file is open. Otherwise this is NULL. |
820 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
821 | bfd *dbfd; | |
3019eac3 | 822 | |
73869dc2 DE |
823 | /* The sections that make up this DWO file. |
824 | Remember that for virtual DWO files in DWP V2, these are virtual | |
825 | sections (for lack of a better name). */ | |
3019eac3 DE |
826 | struct dwo_sections sections; |
827 | ||
19c3d4c9 DE |
828 | /* The CU in the file. |
829 | We only support one because having more than one requires hacking the | |
830 | dwo_name of each to match, which is highly unlikely to happen. | |
831 | Doing this means all TUs can share comp_dir: We also assume that | |
832 | DW_AT_comp_dir across all TUs in a DWO file will be identical. */ | |
833 | struct dwo_unit *cu; | |
3019eac3 DE |
834 | |
835 | /* Table of TUs in the file. | |
836 | Each element is a struct dwo_unit. */ | |
837 | htab_t tus; | |
838 | }; | |
839 | ||
80626a55 DE |
840 | /* These sections are what may appear in a DWP file. */ |
841 | ||
842 | struct dwp_sections | |
843 | { | |
73869dc2 | 844 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
845 | struct dwarf2_section_info str; |
846 | struct dwarf2_section_info cu_index; | |
847 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
848 | |
849 | /* These are only used by DWP version 2 files. | |
850 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
851 | sections are referenced by section number, and are not recorded here. | |
852 | In DWP version 2 there is at most one copy of all these sections, each | |
853 | section being (effectively) comprised of the concatenation of all of the | |
854 | individual sections that exist in the version 1 format. | |
855 | To keep the code simple we treat each of these concatenated pieces as a | |
856 | section itself (a virtual section?). */ | |
857 | struct dwarf2_section_info abbrev; | |
858 | struct dwarf2_section_info info; | |
859 | struct dwarf2_section_info line; | |
860 | struct dwarf2_section_info loc; | |
861 | struct dwarf2_section_info macinfo; | |
862 | struct dwarf2_section_info macro; | |
863 | struct dwarf2_section_info str_offsets; | |
864 | struct dwarf2_section_info types; | |
80626a55 DE |
865 | }; |
866 | ||
73869dc2 DE |
867 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
868 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 869 | |
73869dc2 | 870 | struct virtual_v1_dwo_sections |
80626a55 DE |
871 | { |
872 | struct dwarf2_section_info abbrev; | |
873 | struct dwarf2_section_info line; | |
874 | struct dwarf2_section_info loc; | |
875 | struct dwarf2_section_info macinfo; | |
876 | struct dwarf2_section_info macro; | |
877 | struct dwarf2_section_info str_offsets; | |
878 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 879 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
880 | struct dwarf2_section_info info_or_types; |
881 | }; | |
882 | ||
73869dc2 DE |
883 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
884 | In version 2, the sections of the DWO files are concatenated together | |
885 | and stored in one section of that name. Thus each ELF section contains | |
886 | several "virtual" sections. */ | |
887 | ||
888 | struct virtual_v2_dwo_sections | |
889 | { | |
890 | bfd_size_type abbrev_offset; | |
891 | bfd_size_type abbrev_size; | |
892 | ||
893 | bfd_size_type line_offset; | |
894 | bfd_size_type line_size; | |
895 | ||
896 | bfd_size_type loc_offset; | |
897 | bfd_size_type loc_size; | |
898 | ||
899 | bfd_size_type macinfo_offset; | |
900 | bfd_size_type macinfo_size; | |
901 | ||
902 | bfd_size_type macro_offset; | |
903 | bfd_size_type macro_size; | |
904 | ||
905 | bfd_size_type str_offsets_offset; | |
906 | bfd_size_type str_offsets_size; | |
907 | ||
908 | /* Each DWP hash table entry records one CU or one TU. | |
909 | That is recorded here, and copied to dwo_unit.section. */ | |
910 | bfd_size_type info_or_types_offset; | |
911 | bfd_size_type info_or_types_size; | |
912 | }; | |
913 | ||
80626a55 DE |
914 | /* Contents of DWP hash tables. */ |
915 | ||
916 | struct dwp_hash_table | |
917 | { | |
73869dc2 | 918 | uint32_t version, nr_columns; |
80626a55 | 919 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
920 | const gdb_byte *hash_table, *unit_table; |
921 | union | |
922 | { | |
923 | struct | |
924 | { | |
925 | const gdb_byte *indices; | |
926 | } v1; | |
927 | struct | |
928 | { | |
929 | /* This is indexed by column number and gives the id of the section | |
930 | in that column. */ | |
931 | #define MAX_NR_V2_DWO_SECTIONS \ | |
932 | (1 /* .debug_info or .debug_types */ \ | |
933 | + 1 /* .debug_abbrev */ \ | |
934 | + 1 /* .debug_line */ \ | |
935 | + 1 /* .debug_loc */ \ | |
936 | + 1 /* .debug_str_offsets */ \ | |
937 | + 1 /* .debug_macro or .debug_macinfo */) | |
938 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
939 | const gdb_byte *offsets; | |
940 | const gdb_byte *sizes; | |
941 | } v2; | |
942 | } section_pool; | |
80626a55 DE |
943 | }; |
944 | ||
945 | /* Data for one DWP file. */ | |
946 | ||
947 | struct dwp_file | |
948 | { | |
949 | /* Name of the file. */ | |
950 | const char *name; | |
951 | ||
73869dc2 DE |
952 | /* File format version. */ |
953 | int version; | |
954 | ||
93417882 | 955 | /* The bfd. */ |
80626a55 DE |
956 | bfd *dbfd; |
957 | ||
958 | /* Section info for this file. */ | |
959 | struct dwp_sections sections; | |
960 | ||
57d63ce2 | 961 | /* Table of CUs in the file. */ |
80626a55 DE |
962 | const struct dwp_hash_table *cus; |
963 | ||
964 | /* Table of TUs in the file. */ | |
965 | const struct dwp_hash_table *tus; | |
966 | ||
19ac8c2e DE |
967 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
968 | htab_t loaded_cus; | |
969 | htab_t loaded_tus; | |
80626a55 | 970 | |
73869dc2 DE |
971 | /* Table to map ELF section numbers to their sections. |
972 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
973 | unsigned int num_sections; |
974 | asection **elf_sections; | |
975 | }; | |
976 | ||
36586728 TT |
977 | /* This represents a '.dwz' file. */ |
978 | ||
979 | struct dwz_file | |
980 | { | |
981 | /* A dwz file can only contain a few sections. */ | |
982 | struct dwarf2_section_info abbrev; | |
983 | struct dwarf2_section_info info; | |
984 | struct dwarf2_section_info str; | |
985 | struct dwarf2_section_info line; | |
986 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 987 | struct dwarf2_section_info gdb_index; |
36586728 TT |
988 | |
989 | /* The dwz's BFD. */ | |
990 | bfd *dwz_bfd; | |
991 | }; | |
992 | ||
0963b4bd MS |
993 | /* Struct used to pass misc. parameters to read_die_and_children, et |
994 | al. which are used for both .debug_info and .debug_types dies. | |
995 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 996 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
997 | |
998 | struct die_reader_specs | |
999 | { | |
a32a8923 | 1000 | /* The bfd of die_section. */ |
93311388 DE |
1001 | bfd* abfd; |
1002 | ||
1003 | /* The CU of the DIE we are parsing. */ | |
1004 | struct dwarf2_cu *cu; | |
1005 | ||
80626a55 | 1006 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1007 | struct dwo_file *dwo_file; |
1008 | ||
dee91e82 | 1009 | /* The section the die comes from. |
3019eac3 | 1010 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1011 | struct dwarf2_section_info *die_section; |
1012 | ||
1013 | /* die_section->buffer. */ | |
d521ce57 | 1014 | const gdb_byte *buffer; |
f664829e DE |
1015 | |
1016 | /* The end of the buffer. */ | |
1017 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1018 | |
1019 | /* The value of the DW_AT_comp_dir attribute. */ | |
1020 | const char *comp_dir; | |
93311388 DE |
1021 | }; |
1022 | ||
fd820528 | 1023 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1024 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1025 | const gdb_byte *info_ptr, |
dee91e82 DE |
1026 | struct die_info *comp_unit_die, |
1027 | int has_children, | |
1028 | void *data); | |
1029 | ||
52059ffd TT |
1030 | struct file_entry |
1031 | { | |
1032 | const char *name; | |
1033 | unsigned int dir_index; | |
1034 | unsigned int mod_time; | |
1035 | unsigned int length; | |
83769d0b DE |
1036 | /* Non-zero if referenced by the Line Number Program. */ |
1037 | int included_p; | |
1038 | /* The associated symbol table, if any. */ | |
1039 | struct symtab *symtab; | |
52059ffd TT |
1040 | }; |
1041 | ||
debd256d JB |
1042 | /* The line number information for a compilation unit (found in the |
1043 | .debug_line section) begins with a "statement program header", | |
1044 | which contains the following information. */ | |
1045 | struct line_header | |
1046 | { | |
527f3840 JK |
1047 | /* Offset of line number information in .debug_line section. */ |
1048 | sect_offset offset; | |
1049 | ||
1050 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
1051 | unsigned offset_in_dwz : 1; | |
1052 | ||
debd256d JB |
1053 | unsigned int total_length; |
1054 | unsigned short version; | |
1055 | unsigned int header_length; | |
1056 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 1057 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
1058 | unsigned char default_is_stmt; |
1059 | int line_base; | |
1060 | unsigned char line_range; | |
1061 | unsigned char opcode_base; | |
1062 | ||
1063 | /* standard_opcode_lengths[i] is the number of operands for the | |
1064 | standard opcode whose value is i. This means that | |
1065 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1066 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
1067 | unsigned char *standard_opcode_lengths; | |
1068 | ||
1069 | /* The include_directories table. NOTE! These strings are not | |
1070 | allocated with xmalloc; instead, they are pointers into | |
1071 | debug_line_buffer. If you try to free them, `free' will get | |
1072 | indigestion. */ | |
1073 | unsigned int num_include_dirs, include_dirs_size; | |
d521ce57 | 1074 | const char **include_dirs; |
debd256d JB |
1075 | |
1076 | /* The file_names table. NOTE! These strings are not allocated | |
1077 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
1078 | Don't try to free them directly. */ | |
1079 | unsigned int num_file_names, file_names_size; | |
52059ffd | 1080 | struct file_entry *file_names; |
debd256d JB |
1081 | |
1082 | /* The start and end of the statement program following this | |
6502dd73 | 1083 | header. These point into dwarf2_per_objfile->line_buffer. */ |
d521ce57 | 1084 | const gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 1085 | }; |
c906108c SS |
1086 | |
1087 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 1088 | need this much information. */ |
c906108c SS |
1089 | struct partial_die_info |
1090 | { | |
72bf9492 | 1091 | /* Offset of this DIE. */ |
b64f50a1 | 1092 | sect_offset offset; |
72bf9492 DJ |
1093 | |
1094 | /* DWARF-2 tag for this DIE. */ | |
1095 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1096 | ||
72bf9492 DJ |
1097 | /* Assorted flags describing the data found in this DIE. */ |
1098 | unsigned int has_children : 1; | |
1099 | unsigned int is_external : 1; | |
1100 | unsigned int is_declaration : 1; | |
1101 | unsigned int has_type : 1; | |
1102 | unsigned int has_specification : 1; | |
1103 | unsigned int has_pc_info : 1; | |
481860b3 | 1104 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
1105 | |
1106 | /* Flag set if the SCOPE field of this structure has been | |
1107 | computed. */ | |
1108 | unsigned int scope_set : 1; | |
1109 | ||
fa4028e9 JB |
1110 | /* Flag set if the DIE has a byte_size attribute. */ |
1111 | unsigned int has_byte_size : 1; | |
1112 | ||
ff908ebf AW |
1113 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1114 | unsigned int has_const_value : 1; | |
1115 | ||
98bfdba5 PA |
1116 | /* Flag set if any of the DIE's children are template arguments. */ |
1117 | unsigned int has_template_arguments : 1; | |
1118 | ||
abc72ce4 DE |
1119 | /* Flag set if fixup_partial_die has been called on this die. */ |
1120 | unsigned int fixup_called : 1; | |
1121 | ||
36586728 TT |
1122 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1123 | unsigned int is_dwz : 1; | |
1124 | ||
1125 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1126 | unsigned int spec_is_dwz : 1; | |
1127 | ||
72bf9492 | 1128 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1129 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1130 | const char *name; |
72bf9492 | 1131 | |
abc72ce4 DE |
1132 | /* The linkage name, if present. */ |
1133 | const char *linkage_name; | |
1134 | ||
72bf9492 DJ |
1135 | /* The scope to prepend to our children. This is generally |
1136 | allocated on the comp_unit_obstack, so will disappear | |
1137 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1138 | const char *scope; |
72bf9492 | 1139 | |
95554aad TT |
1140 | /* Some data associated with the partial DIE. The tag determines |
1141 | which field is live. */ | |
1142 | union | |
1143 | { | |
1144 | /* The location description associated with this DIE, if any. */ | |
1145 | struct dwarf_block *locdesc; | |
1146 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
1147 | sect_offset offset; | |
1148 | } d; | |
72bf9492 DJ |
1149 | |
1150 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1151 | CORE_ADDR lowpc; |
1152 | CORE_ADDR highpc; | |
72bf9492 | 1153 | |
93311388 | 1154 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1155 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1156 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1157 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1158 | const gdb_byte *sibling; |
72bf9492 DJ |
1159 | |
1160 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1161 | DW_AT_specification (or DW_AT_abstract_origin or | |
1162 | DW_AT_extension). */ | |
b64f50a1 | 1163 | sect_offset spec_offset; |
72bf9492 DJ |
1164 | |
1165 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1166 | if any. */ | |
1167 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1168 | }; |
1169 | ||
0963b4bd | 1170 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1171 | struct abbrev_info |
1172 | { | |
1173 | unsigned int number; /* number identifying abbrev */ | |
1174 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1175 | unsigned short has_children; /* boolean */ |
1176 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1177 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1178 | struct abbrev_info *next; /* next in chain */ | |
1179 | }; | |
1180 | ||
1181 | struct attr_abbrev | |
1182 | { | |
9d25dd43 DE |
1183 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1184 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
1185 | }; |
1186 | ||
433df2d4 DE |
1187 | /* Size of abbrev_table.abbrev_hash_table. */ |
1188 | #define ABBREV_HASH_SIZE 121 | |
1189 | ||
1190 | /* Top level data structure to contain an abbreviation table. */ | |
1191 | ||
1192 | struct abbrev_table | |
1193 | { | |
f4dc4d17 DE |
1194 | /* Where the abbrev table came from. |
1195 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1196 | sect_offset offset; |
1197 | ||
1198 | /* Storage for the abbrev table. */ | |
1199 | struct obstack abbrev_obstack; | |
1200 | ||
1201 | /* Hash table of abbrevs. | |
1202 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1203 | It could be statically allocated, but the previous code didn't so we | |
1204 | don't either. */ | |
1205 | struct abbrev_info **abbrevs; | |
1206 | }; | |
1207 | ||
0963b4bd | 1208 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1209 | struct attribute |
1210 | { | |
9d25dd43 | 1211 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1212 | ENUM_BITFIELD(dwarf_form) form : 15; |
1213 | ||
1214 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1215 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1216 | here for better struct attribute alignment. */ | |
1217 | unsigned int string_is_canonical : 1; | |
1218 | ||
b60c80d6 DJ |
1219 | union |
1220 | { | |
15d034d0 | 1221 | const char *str; |
b60c80d6 | 1222 | struct dwarf_block *blk; |
43bbcdc2 PH |
1223 | ULONGEST unsnd; |
1224 | LONGEST snd; | |
b60c80d6 | 1225 | CORE_ADDR addr; |
ac9ec31b | 1226 | ULONGEST signature; |
b60c80d6 DJ |
1227 | } |
1228 | u; | |
1229 | }; | |
1230 | ||
0963b4bd | 1231 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1232 | struct die_info |
1233 | { | |
76815b17 DE |
1234 | /* DWARF-2 tag for this DIE. */ |
1235 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1236 | ||
1237 | /* Number of attributes */ | |
98bfdba5 PA |
1238 | unsigned char num_attrs; |
1239 | ||
1240 | /* True if we're presently building the full type name for the | |
1241 | type derived from this DIE. */ | |
1242 | unsigned char building_fullname : 1; | |
76815b17 | 1243 | |
adde2bff DE |
1244 | /* True if this die is in process. PR 16581. */ |
1245 | unsigned char in_process : 1; | |
1246 | ||
76815b17 DE |
1247 | /* Abbrev number */ |
1248 | unsigned int abbrev; | |
1249 | ||
93311388 | 1250 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1251 | sect_offset offset; |
78ba4af6 JB |
1252 | |
1253 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1254 | points to this die's parent; CHILD points to the first child of | |
1255 | this node; and all the children of a given node are chained | |
4950bc1c | 1256 | together via their SIBLING fields. */ |
639d11d3 DC |
1257 | struct die_info *child; /* Its first child, if any. */ |
1258 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1259 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1260 | |
b60c80d6 DJ |
1261 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1262 | zero, but it's not common and zero-sized arrays are not | |
1263 | sufficiently portable C. */ | |
1264 | struct attribute attrs[1]; | |
c906108c SS |
1265 | }; |
1266 | ||
0963b4bd | 1267 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1268 | |
1269 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1270 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1271 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1272 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1273 | #define DW_SND(attr) ((attr)->u.snd) | |
1274 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1275 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1276 | |
0963b4bd | 1277 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1278 | struct dwarf_block |
1279 | { | |
56eb65bd | 1280 | size_t size; |
1d6edc3c JK |
1281 | |
1282 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1283 | const gdb_byte *data; |
c906108c SS |
1284 | }; |
1285 | ||
c906108c SS |
1286 | #ifndef ATTR_ALLOC_CHUNK |
1287 | #define ATTR_ALLOC_CHUNK 4 | |
1288 | #endif | |
1289 | ||
c906108c SS |
1290 | /* Allocate fields for structs, unions and enums in this size. */ |
1291 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1292 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1293 | #endif | |
1294 | ||
c906108c SS |
1295 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1296 | but this would require a corresponding change in unpack_field_as_long | |
1297 | and friends. */ | |
1298 | static int bits_per_byte = 8; | |
1299 | ||
52059ffd TT |
1300 | struct nextfield |
1301 | { | |
1302 | struct nextfield *next; | |
1303 | int accessibility; | |
1304 | int virtuality; | |
1305 | struct field field; | |
1306 | }; | |
1307 | ||
1308 | struct nextfnfield | |
1309 | { | |
1310 | struct nextfnfield *next; | |
1311 | struct fn_field fnfield; | |
1312 | }; | |
1313 | ||
1314 | struct fnfieldlist | |
1315 | { | |
1316 | const char *name; | |
1317 | int length; | |
1318 | struct nextfnfield *head; | |
1319 | }; | |
1320 | ||
1321 | struct typedef_field_list | |
1322 | { | |
1323 | struct typedef_field field; | |
1324 | struct typedef_field_list *next; | |
1325 | }; | |
1326 | ||
c906108c SS |
1327 | /* The routines that read and process dies for a C struct or C++ class |
1328 | pass lists of data member fields and lists of member function fields | |
1329 | in an instance of a field_info structure, as defined below. */ | |
1330 | struct field_info | |
c5aa993b | 1331 | { |
0963b4bd | 1332 | /* List of data member and baseclasses fields. */ |
52059ffd | 1333 | struct nextfield *fields, *baseclasses; |
c906108c | 1334 | |
7d0ccb61 | 1335 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1336 | int nfields; |
c906108c | 1337 | |
c5aa993b JM |
1338 | /* Number of baseclasses. */ |
1339 | int nbaseclasses; | |
c906108c | 1340 | |
c5aa993b JM |
1341 | /* Set if the accesibility of one of the fields is not public. */ |
1342 | int non_public_fields; | |
c906108c | 1343 | |
c5aa993b JM |
1344 | /* Member function fields array, entries are allocated in the order they |
1345 | are encountered in the object file. */ | |
52059ffd | 1346 | struct nextfnfield *fnfields; |
c906108c | 1347 | |
c5aa993b JM |
1348 | /* Member function fieldlist array, contains name of possibly overloaded |
1349 | member function, number of overloaded member functions and a pointer | |
1350 | to the head of the member function field chain. */ | |
52059ffd | 1351 | struct fnfieldlist *fnfieldlists; |
c906108c | 1352 | |
c5aa993b JM |
1353 | /* Number of entries in the fnfieldlists array. */ |
1354 | int nfnfields; | |
98751a41 JK |
1355 | |
1356 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1357 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
52059ffd | 1358 | struct typedef_field_list *typedef_field_list; |
98751a41 | 1359 | unsigned typedef_field_list_count; |
c5aa993b | 1360 | }; |
c906108c | 1361 | |
10b3939b DJ |
1362 | /* One item on the queue of compilation units to read in full symbols |
1363 | for. */ | |
1364 | struct dwarf2_queue_item | |
1365 | { | |
1366 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1367 | enum language pretend_language; |
10b3939b DJ |
1368 | struct dwarf2_queue_item *next; |
1369 | }; | |
1370 | ||
1371 | /* The current queue. */ | |
1372 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1373 | ||
ae038cb0 DJ |
1374 | /* Loaded secondary compilation units are kept in memory until they |
1375 | have not been referenced for the processing of this many | |
1376 | compilation units. Set this to zero to disable caching. Cache | |
1377 | sizes of up to at least twenty will improve startup time for | |
1378 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1379 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1380 | static void |
b4f54984 DE |
1381 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1382 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1383 | { |
3e43a32a | 1384 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1385 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1386 | value); |
1387 | } | |
4390d890 | 1388 | \f |
c906108c SS |
1389 | /* local function prototypes */ |
1390 | ||
a32a8923 DE |
1391 | static const char *get_section_name (const struct dwarf2_section_info *); |
1392 | ||
1393 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1394 | ||
4efb68b1 | 1395 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1396 | |
918dd910 JK |
1397 | static void dwarf2_find_base_address (struct die_info *die, |
1398 | struct dwarf2_cu *cu); | |
1399 | ||
0018ea6f DE |
1400 | static struct partial_symtab *create_partial_symtab |
1401 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1402 | ||
c67a9c90 | 1403 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1404 | |
72bf9492 DJ |
1405 | static void scan_partial_symbols (struct partial_die_info *, |
1406 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1407 | int, struct dwarf2_cu *); |
c906108c | 1408 | |
72bf9492 DJ |
1409 | static void add_partial_symbol (struct partial_die_info *, |
1410 | struct dwarf2_cu *); | |
63d06c5c | 1411 | |
72bf9492 DJ |
1412 | static void add_partial_namespace (struct partial_die_info *pdi, |
1413 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1414 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1415 | |
5d7cb8df | 1416 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1417 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1418 | struct dwarf2_cu *cu); |
1419 | ||
72bf9492 DJ |
1420 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1421 | struct dwarf2_cu *cu); | |
91c24f0a | 1422 | |
bc30ff58 JB |
1423 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1424 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1425 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1426 | |
257e7a09 YQ |
1427 | static void dwarf2_read_symtab (struct partial_symtab *, |
1428 | struct objfile *); | |
c906108c | 1429 | |
a14ed312 | 1430 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1431 | |
433df2d4 DE |
1432 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1433 | (const struct abbrev_table *, unsigned int); | |
1434 | ||
1435 | static struct abbrev_table *abbrev_table_read_table | |
1436 | (struct dwarf2_section_info *, sect_offset); | |
1437 | ||
1438 | static void abbrev_table_free (struct abbrev_table *); | |
1439 | ||
f4dc4d17 DE |
1440 | static void abbrev_table_free_cleanup (void *); |
1441 | ||
dee91e82 DE |
1442 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1443 | struct dwarf2_section_info *); | |
c906108c | 1444 | |
f3dd6933 | 1445 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1446 | |
d521ce57 | 1447 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1448 | |
dee91e82 | 1449 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1450 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1451 | |
d521ce57 TT |
1452 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1453 | struct partial_die_info *, | |
1454 | struct abbrev_info *, | |
1455 | unsigned int, | |
1456 | const gdb_byte *); | |
c906108c | 1457 | |
36586728 | 1458 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1459 | struct dwarf2_cu *); |
72bf9492 DJ |
1460 | |
1461 | static void fixup_partial_die (struct partial_die_info *, | |
1462 | struct dwarf2_cu *); | |
1463 | ||
d521ce57 TT |
1464 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1465 | struct attribute *, struct attr_abbrev *, | |
1466 | const gdb_byte *); | |
a8329558 | 1467 | |
a1855c1d | 1468 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1469 | |
a1855c1d | 1470 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1471 | |
a1855c1d | 1472 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1473 | |
a1855c1d | 1474 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1475 | |
a1855c1d | 1476 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1477 | |
d521ce57 | 1478 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1479 | unsigned int *); |
c906108c | 1480 | |
d521ce57 | 1481 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1482 | |
1483 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1484 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1485 | unsigned int *, unsigned int *); |
613e1657 | 1486 | |
d521ce57 TT |
1487 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1488 | const struct comp_unit_head *, | |
c764a876 DE |
1489 | unsigned int *); |
1490 | ||
d521ce57 | 1491 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1492 | |
f4dc4d17 DE |
1493 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1494 | sect_offset); | |
1495 | ||
d521ce57 | 1496 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1497 | |
d521ce57 | 1498 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1499 | |
d521ce57 TT |
1500 | static const char *read_indirect_string (bfd *, const gdb_byte *, |
1501 | const struct comp_unit_head *, | |
1502 | unsigned int *); | |
4bdf3d34 | 1503 | |
d521ce57 | 1504 | static const char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
36586728 | 1505 | |
d521ce57 | 1506 | static ULONGEST read_unsigned_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1507 | |
d521ce57 | 1508 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1509 | |
d521ce57 TT |
1510 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1511 | const gdb_byte *, | |
3019eac3 DE |
1512 | unsigned int *); |
1513 | ||
d521ce57 | 1514 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1515 | ULONGEST str_index); |
3019eac3 | 1516 | |
e142c38c | 1517 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1518 | |
e142c38c DJ |
1519 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1520 | struct dwarf2_cu *); | |
c906108c | 1521 | |
348e048f | 1522 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1523 | unsigned int); |
348e048f | 1524 | |
05cf31d1 JB |
1525 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1526 | struct dwarf2_cu *cu); | |
1527 | ||
e142c38c | 1528 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1529 | |
e142c38c | 1530 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1531 | struct dwarf2_cu **); |
63d06c5c | 1532 | |
debd256d JB |
1533 | static void free_line_header (struct line_header *lh); |
1534 | ||
3019eac3 DE |
1535 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1536 | struct dwarf2_cu *cu); | |
debd256d | 1537 | |
f3f5162e | 1538 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1539 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1540 | CORE_ADDR, int decode_mapping); |
c906108c | 1541 | |
4d663531 | 1542 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1543 | |
43f3e411 DE |
1544 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1545 | const char *, const char *, | |
1546 | CORE_ADDR); | |
f4dc4d17 | 1547 | |
a14ed312 | 1548 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1549 | struct dwarf2_cu *); |
c906108c | 1550 | |
34eaf542 TT |
1551 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1552 | struct dwarf2_cu *, struct symbol *); | |
1553 | ||
ff39bb5e | 1554 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1555 | struct dwarf2_cu *); |
c906108c | 1556 | |
ff39bb5e | 1557 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1558 | struct type *type, |
1559 | const char *name, | |
1560 | struct obstack *obstack, | |
12df843f | 1561 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1562 | const gdb_byte **bytes, |
98bfdba5 | 1563 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1564 | |
e7c27a73 | 1565 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1566 | |
b4ba55a1 JB |
1567 | static int need_gnat_info (struct dwarf2_cu *); |
1568 | ||
3e43a32a MS |
1569 | static struct type *die_descriptive_type (struct die_info *, |
1570 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1571 | |
1572 | static void set_descriptive_type (struct type *, struct die_info *, | |
1573 | struct dwarf2_cu *); | |
1574 | ||
e7c27a73 DJ |
1575 | static struct type *die_containing_type (struct die_info *, |
1576 | struct dwarf2_cu *); | |
c906108c | 1577 | |
ff39bb5e | 1578 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1579 | struct dwarf2_cu *); |
c906108c | 1580 | |
f792889a | 1581 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1582 | |
673bfd45 DE |
1583 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1584 | ||
0d5cff50 | 1585 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1586 | |
6e70227d | 1587 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1588 | const char *suffix, int physname, |
1589 | struct dwarf2_cu *cu); | |
63d06c5c | 1590 | |
e7c27a73 | 1591 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1592 | |
348e048f DE |
1593 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1594 | ||
e7c27a73 | 1595 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1596 | |
e7c27a73 | 1597 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1598 | |
96408a79 SA |
1599 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1600 | ||
ff013f42 JK |
1601 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1602 | struct dwarf2_cu *, struct partial_symtab *); | |
1603 | ||
a14ed312 | 1604 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1605 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1606 | struct partial_symtab *); | |
c906108c | 1607 | |
fae299cd DC |
1608 | static void get_scope_pc_bounds (struct die_info *, |
1609 | CORE_ADDR *, CORE_ADDR *, | |
1610 | struct dwarf2_cu *); | |
1611 | ||
801e3a5b JB |
1612 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1613 | CORE_ADDR, struct dwarf2_cu *); | |
1614 | ||
a14ed312 | 1615 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1616 | struct dwarf2_cu *); |
c906108c | 1617 | |
a14ed312 | 1618 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1619 | struct type *, struct dwarf2_cu *); |
c906108c | 1620 | |
a14ed312 | 1621 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1622 | struct die_info *, struct type *, |
e7c27a73 | 1623 | struct dwarf2_cu *); |
c906108c | 1624 | |
a14ed312 | 1625 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1626 | struct type *, |
1627 | struct dwarf2_cu *); | |
c906108c | 1628 | |
134d01f1 | 1629 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1630 | |
e7c27a73 | 1631 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1632 | |
e7c27a73 | 1633 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1634 | |
5d7cb8df JK |
1635 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1636 | ||
27aa8d6a SW |
1637 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1638 | ||
74921315 KS |
1639 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1640 | ||
f55ee35c JK |
1641 | static struct type *read_module_type (struct die_info *die, |
1642 | struct dwarf2_cu *cu); | |
1643 | ||
38d518c9 | 1644 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1645 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1646 | |
134d01f1 | 1647 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1648 | |
e7c27a73 | 1649 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1650 | |
6e70227d | 1651 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1652 | struct dwarf2_cu *); |
1653 | ||
bf6af496 | 1654 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1655 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1656 | struct die_info *); |
639d11d3 | 1657 | |
dee91e82 | 1658 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1659 | const gdb_byte *info_ptr, |
1660 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1661 | struct die_info *parent); |
1662 | ||
d521ce57 TT |
1663 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1664 | struct die_info **, const gdb_byte *, | |
1665 | int *, int); | |
3019eac3 | 1666 | |
d521ce57 TT |
1667 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1668 | struct die_info **, const gdb_byte *, | |
1669 | int *); | |
93311388 | 1670 | |
e7c27a73 | 1671 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1672 | |
15d034d0 TT |
1673 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1674 | struct obstack *); | |
71c25dea | 1675 | |
15d034d0 | 1676 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1677 | |
15d034d0 | 1678 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1679 | struct die_info *die, |
1680 | struct dwarf2_cu *cu); | |
1681 | ||
ca69b9e6 DE |
1682 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1683 | struct dwarf2_cu *cu); | |
1684 | ||
e142c38c | 1685 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1686 | struct dwarf2_cu **); |
9219021c | 1687 | |
f39c6ffd | 1688 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1689 | |
f39c6ffd | 1690 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1691 | |
f39c6ffd | 1692 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1693 | |
a14ed312 | 1694 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1695 | |
f39c6ffd | 1696 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1697 | |
f9aca02d | 1698 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1699 | |
d97bc12b DE |
1700 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1701 | ||
1702 | static void dump_die_for_error (struct die_info *); | |
1703 | ||
1704 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1705 | struct die_info *); | |
c906108c | 1706 | |
d97bc12b | 1707 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1708 | |
51545339 | 1709 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1710 | struct dwarf2_cu *); |
c906108c | 1711 | |
ff39bb5e | 1712 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1713 | |
ff39bb5e | 1714 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1715 | |
348e048f | 1716 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1717 | const struct attribute *, |
348e048f DE |
1718 | struct dwarf2_cu **); |
1719 | ||
10b3939b | 1720 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1721 | const struct attribute *, |
f2f0e013 | 1722 | struct dwarf2_cu **); |
c906108c | 1723 | |
348e048f | 1724 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1725 | const struct attribute *, |
348e048f DE |
1726 | struct dwarf2_cu **); |
1727 | ||
ac9ec31b DE |
1728 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1729 | struct dwarf2_cu *); | |
1730 | ||
1731 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1732 | const struct attribute *, |
ac9ec31b DE |
1733 | struct dwarf2_cu *); |
1734 | ||
e5fe5e75 | 1735 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1736 | |
52dc124a | 1737 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1738 | |
c906108c SS |
1739 | /* memory allocation interface */ |
1740 | ||
7b5a2f43 | 1741 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1742 | |
b60c80d6 | 1743 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1744 | |
43f3e411 | 1745 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1746 | |
6e5a29e1 | 1747 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1748 | |
6e5a29e1 | 1749 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1750 | |
6e5a29e1 | 1751 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1752 | |
6e5a29e1 | 1753 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1754 | |
8cf6f0b1 TT |
1755 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1756 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1757 | const struct attribute *attr); |
8cf6f0b1 | 1758 | |
ff39bb5e | 1759 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1760 | struct symbol *sym, |
f1e6e072 TT |
1761 | struct dwarf2_cu *cu, |
1762 | int is_block); | |
4c2df51b | 1763 | |
d521ce57 TT |
1764 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1765 | const gdb_byte *info_ptr, | |
1766 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1767 | |
72bf9492 DJ |
1768 | static void free_stack_comp_unit (void *); |
1769 | ||
72bf9492 DJ |
1770 | static hashval_t partial_die_hash (const void *item); |
1771 | ||
1772 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1773 | ||
ae038cb0 | 1774 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1775 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1776 | |
9816fde3 | 1777 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1778 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1779 | |
1780 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1781 | struct die_info *comp_unit_die, |
1782 | enum language pretend_language); | |
93311388 | 1783 | |
68dc6402 | 1784 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1785 | |
1786 | static void free_cached_comp_units (void *); | |
1787 | ||
1788 | static void age_cached_comp_units (void); | |
1789 | ||
dee91e82 | 1790 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1791 | |
f792889a DJ |
1792 | static struct type *set_die_type (struct die_info *, struct type *, |
1793 | struct dwarf2_cu *); | |
1c379e20 | 1794 | |
ae038cb0 DJ |
1795 | static void create_all_comp_units (struct objfile *); |
1796 | ||
0e50663e | 1797 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1798 | |
95554aad TT |
1799 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1800 | enum language); | |
10b3939b | 1801 | |
95554aad TT |
1802 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1803 | enum language); | |
10b3939b | 1804 | |
f4dc4d17 DE |
1805 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1806 | enum language); | |
1807 | ||
10b3939b DJ |
1808 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1809 | struct dwarf2_per_cu_data *); | |
1810 | ||
ae038cb0 DJ |
1811 | static void dwarf2_mark (struct dwarf2_cu *); |
1812 | ||
1813 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1814 | ||
b64f50a1 | 1815 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1816 | struct dwarf2_per_cu_data *); |
673bfd45 | 1817 | |
f792889a | 1818 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1819 | |
9291a0cd TT |
1820 | static void dwarf2_release_queue (void *dummy); |
1821 | ||
95554aad TT |
1822 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1823 | enum language pretend_language); | |
1824 | ||
a0f42c21 | 1825 | static void process_queue (void); |
9291a0cd TT |
1826 | |
1827 | static void find_file_and_directory (struct die_info *die, | |
1828 | struct dwarf2_cu *cu, | |
15d034d0 | 1829 | const char **name, const char **comp_dir); |
9291a0cd TT |
1830 | |
1831 | static char *file_full_name (int file, struct line_header *lh, | |
1832 | const char *comp_dir); | |
1833 | ||
d521ce57 | 1834 | static const gdb_byte *read_and_check_comp_unit_head |
36586728 TT |
1835 | (struct comp_unit_head *header, |
1836 | struct dwarf2_section_info *section, | |
d521ce57 | 1837 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
36586728 TT |
1838 | int is_debug_types_section); |
1839 | ||
fd820528 | 1840 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1841 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1842 | int use_existing_cu, int keep, | |
3019eac3 DE |
1843 | die_reader_func_ftype *die_reader_func, void *data); |
1844 | ||
dee91e82 DE |
1845 | static void init_cutu_and_read_dies_simple |
1846 | (struct dwarf2_per_cu_data *this_cu, | |
1847 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1848 | |
673bfd45 | 1849 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1850 | |
3019eac3 DE |
1851 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1852 | ||
57d63ce2 DE |
1853 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
1854 | (struct dwp_file *dwp_file, const char *comp_dir, | |
1855 | ULONGEST signature, int is_debug_types); | |
a2ce51a0 DE |
1856 | |
1857 | static struct dwp_file *get_dwp_file (void); | |
1858 | ||
3019eac3 | 1859 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1860 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1861 | |
1862 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1863 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1864 | |
89e63ee4 DE |
1865 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1866 | ||
3019eac3 DE |
1867 | static void free_dwo_file_cleanup (void *); |
1868 | ||
95554aad TT |
1869 | static void process_cu_includes (void); |
1870 | ||
1b80a9fa | 1871 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1872 | |
1873 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1874 | \f |
1875 | /* Various complaints about symbol reading that don't abort the process. */ | |
1876 | ||
1877 | static void | |
1878 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1879 | { | |
1880 | complaint (&symfile_complaints, | |
1881 | _("statement list doesn't fit in .debug_line section")); | |
1882 | } | |
1883 | ||
1884 | static void | |
1885 | dwarf2_debug_line_missing_file_complaint (void) | |
1886 | { | |
1887 | complaint (&symfile_complaints, | |
1888 | _(".debug_line section has line data without a file")); | |
1889 | } | |
1890 | ||
1891 | static void | |
1892 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1893 | { | |
1894 | complaint (&symfile_complaints, | |
1895 | _(".debug_line section has line " | |
1896 | "program sequence without an end")); | |
1897 | } | |
1898 | ||
1899 | static void | |
1900 | dwarf2_complex_location_expr_complaint (void) | |
1901 | { | |
1902 | complaint (&symfile_complaints, _("location expression too complex")); | |
1903 | } | |
1904 | ||
1905 | static void | |
1906 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1907 | int arg3) | |
1908 | { | |
1909 | complaint (&symfile_complaints, | |
1910 | _("const value length mismatch for '%s', got %d, expected %d"), | |
1911 | arg1, arg2, arg3); | |
1912 | } | |
1913 | ||
1914 | static void | |
1915 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1916 | { | |
1917 | complaint (&symfile_complaints, | |
1918 | _("debug info runs off end of %s section" | |
1919 | " [in module %s]"), | |
a32a8923 DE |
1920 | get_section_name (section), |
1921 | get_section_file_name (section)); | |
4390d890 | 1922 | } |
1b80a9fa | 1923 | |
4390d890 DE |
1924 | static void |
1925 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1926 | { | |
1927 | complaint (&symfile_complaints, | |
1928 | _("macro debug info contains a " | |
1929 | "malformed macro definition:\n`%s'"), | |
1930 | arg1); | |
1931 | } | |
1932 | ||
1933 | static void | |
1934 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1935 | { | |
1936 | complaint (&symfile_complaints, | |
1937 | _("invalid attribute class or form for '%s' in '%s'"), | |
1938 | arg1, arg2); | |
1939 | } | |
527f3840 JK |
1940 | |
1941 | /* Hash function for line_header_hash. */ | |
1942 | ||
1943 | static hashval_t | |
1944 | line_header_hash (const struct line_header *ofs) | |
1945 | { | |
1946 | return ofs->offset.sect_off ^ ofs->offset_in_dwz; | |
1947 | } | |
1948 | ||
1949 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1950 | ||
1951 | static hashval_t | |
1952 | line_header_hash_voidp (const void *item) | |
1953 | { | |
1954 | const struct line_header *ofs = item; | |
1955 | ||
1956 | return line_header_hash (ofs); | |
1957 | } | |
1958 | ||
1959 | /* Equality function for line_header_hash. */ | |
1960 | ||
1961 | static int | |
1962 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1963 | { | |
1964 | const struct line_header *ofs_lhs = item_lhs; | |
1965 | const struct line_header *ofs_rhs = item_rhs; | |
1966 | ||
1967 | return (ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off | |
1968 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); | |
1969 | } | |
1970 | ||
4390d890 | 1971 | \f |
9291a0cd TT |
1972 | #if WORDS_BIGENDIAN |
1973 | ||
1974 | /* Convert VALUE between big- and little-endian. */ | |
1975 | static offset_type | |
1976 | byte_swap (offset_type value) | |
1977 | { | |
1978 | offset_type result; | |
1979 | ||
1980 | result = (value & 0xff) << 24; | |
1981 | result |= (value & 0xff00) << 8; | |
1982 | result |= (value & 0xff0000) >> 8; | |
1983 | result |= (value & 0xff000000) >> 24; | |
1984 | return result; | |
1985 | } | |
1986 | ||
1987 | #define MAYBE_SWAP(V) byte_swap (V) | |
1988 | ||
1989 | #else | |
1990 | #define MAYBE_SWAP(V) (V) | |
1991 | #endif /* WORDS_BIGENDIAN */ | |
1992 | ||
31aa7e4e JB |
1993 | /* Read the given attribute value as an address, taking the attribute's |
1994 | form into account. */ | |
1995 | ||
1996 | static CORE_ADDR | |
1997 | attr_value_as_address (struct attribute *attr) | |
1998 | { | |
1999 | CORE_ADDR addr; | |
2000 | ||
2001 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2002 | { | |
2003 | /* Aside from a few clearly defined exceptions, attributes that | |
2004 | contain an address must always be in DW_FORM_addr form. | |
2005 | Unfortunately, some compilers happen to be violating this | |
2006 | requirement by encoding addresses using other forms, such | |
2007 | as DW_FORM_data4 for example. For those broken compilers, | |
2008 | we try to do our best, without any guarantee of success, | |
2009 | to interpret the address correctly. It would also be nice | |
2010 | to generate a complaint, but that would require us to maintain | |
2011 | a list of legitimate cases where a non-address form is allowed, | |
2012 | as well as update callers to pass in at least the CU's DWARF | |
2013 | version. This is more overhead than what we're willing to | |
2014 | expand for a pretty rare case. */ | |
2015 | addr = DW_UNSND (attr); | |
2016 | } | |
2017 | else | |
2018 | addr = DW_ADDR (attr); | |
2019 | ||
2020 | return addr; | |
2021 | } | |
2022 | ||
9291a0cd TT |
2023 | /* The suffix for an index file. */ |
2024 | #define INDEX_SUFFIX ".gdb-index" | |
2025 | ||
c906108c | 2026 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2027 | information and return true if we have enough to do something. |
2028 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2029 | ELF names are used. */ | |
c906108c SS |
2030 | |
2031 | int | |
251d32d9 TG |
2032 | dwarf2_has_info (struct objfile *objfile, |
2033 | const struct dwarf2_debug_sections *names) | |
c906108c | 2034 | { |
be391dca TT |
2035 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
2036 | if (!dwarf2_per_objfile) | |
2037 | { | |
2038 | /* Initialize per-objfile state. */ | |
2039 | struct dwarf2_per_objfile *data | |
2040 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 2041 | |
be391dca TT |
2042 | memset (data, 0, sizeof (*data)); |
2043 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
2044 | dwarf2_per_objfile = data; | |
6502dd73 | 2045 | |
251d32d9 TG |
2046 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
2047 | (void *) names); | |
be391dca TT |
2048 | dwarf2_per_objfile->objfile = objfile; |
2049 | } | |
73869dc2 DE |
2050 | return (!dwarf2_per_objfile->info.is_virtual |
2051 | && dwarf2_per_objfile->info.s.asection != NULL | |
2052 | && !dwarf2_per_objfile->abbrev.is_virtual | |
2053 | && dwarf2_per_objfile->abbrev.s.asection != NULL); | |
2054 | } | |
2055 | ||
2056 | /* Return the containing section of virtual section SECTION. */ | |
2057 | ||
2058 | static struct dwarf2_section_info * | |
2059 | get_containing_section (const struct dwarf2_section_info *section) | |
2060 | { | |
2061 | gdb_assert (section->is_virtual); | |
2062 | return section->s.containing_section; | |
c906108c SS |
2063 | } |
2064 | ||
a32a8923 DE |
2065 | /* Return the bfd owner of SECTION. */ |
2066 | ||
2067 | static struct bfd * | |
2068 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2069 | { | |
73869dc2 DE |
2070 | if (section->is_virtual) |
2071 | { | |
2072 | section = get_containing_section (section); | |
2073 | gdb_assert (!section->is_virtual); | |
2074 | } | |
2075 | return section->s.asection->owner; | |
a32a8923 DE |
2076 | } |
2077 | ||
2078 | /* Return the bfd section of SECTION. | |
2079 | Returns NULL if the section is not present. */ | |
2080 | ||
2081 | static asection * | |
2082 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2083 | { | |
73869dc2 DE |
2084 | if (section->is_virtual) |
2085 | { | |
2086 | section = get_containing_section (section); | |
2087 | gdb_assert (!section->is_virtual); | |
2088 | } | |
2089 | return section->s.asection; | |
a32a8923 DE |
2090 | } |
2091 | ||
2092 | /* Return the name of SECTION. */ | |
2093 | ||
2094 | static const char * | |
2095 | get_section_name (const struct dwarf2_section_info *section) | |
2096 | { | |
2097 | asection *sectp = get_section_bfd_section (section); | |
2098 | ||
2099 | gdb_assert (sectp != NULL); | |
2100 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2101 | } | |
2102 | ||
2103 | /* Return the name of the file SECTION is in. */ | |
2104 | ||
2105 | static const char * | |
2106 | get_section_file_name (const struct dwarf2_section_info *section) | |
2107 | { | |
2108 | bfd *abfd = get_section_bfd_owner (section); | |
2109 | ||
2110 | return bfd_get_filename (abfd); | |
2111 | } | |
2112 | ||
2113 | /* Return the id of SECTION. | |
2114 | Returns 0 if SECTION doesn't exist. */ | |
2115 | ||
2116 | static int | |
2117 | get_section_id (const struct dwarf2_section_info *section) | |
2118 | { | |
2119 | asection *sectp = get_section_bfd_section (section); | |
2120 | ||
2121 | if (sectp == NULL) | |
2122 | return 0; | |
2123 | return sectp->id; | |
2124 | } | |
2125 | ||
2126 | /* Return the flags of SECTION. | |
73869dc2 | 2127 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2128 | |
2129 | static int | |
2130 | get_section_flags (const struct dwarf2_section_info *section) | |
2131 | { | |
2132 | asection *sectp = get_section_bfd_section (section); | |
2133 | ||
2134 | gdb_assert (sectp != NULL); | |
2135 | return bfd_get_section_flags (sectp->owner, sectp); | |
2136 | } | |
2137 | ||
251d32d9 TG |
2138 | /* When loading sections, we look either for uncompressed section or for |
2139 | compressed section names. */ | |
233a11ab CS |
2140 | |
2141 | static int | |
251d32d9 TG |
2142 | section_is_p (const char *section_name, |
2143 | const struct dwarf2_section_names *names) | |
233a11ab | 2144 | { |
251d32d9 TG |
2145 | if (names->normal != NULL |
2146 | && strcmp (section_name, names->normal) == 0) | |
2147 | return 1; | |
2148 | if (names->compressed != NULL | |
2149 | && strcmp (section_name, names->compressed) == 0) | |
2150 | return 1; | |
2151 | return 0; | |
233a11ab CS |
2152 | } |
2153 | ||
c906108c SS |
2154 | /* This function is mapped across the sections and remembers the |
2155 | offset and size of each of the debugging sections we are interested | |
2156 | in. */ | |
2157 | ||
2158 | static void | |
251d32d9 | 2159 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 2160 | { |
251d32d9 | 2161 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 2162 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
2163 | |
2164 | if (vnames == NULL) | |
2165 | names = &dwarf2_elf_names; | |
2166 | else | |
2167 | names = (const struct dwarf2_debug_sections *) vnames; | |
2168 | ||
dc7650b8 JK |
2169 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2170 | { | |
2171 | } | |
2172 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 2173 | { |
73869dc2 | 2174 | dwarf2_per_objfile->info.s.asection = sectp; |
dce234bc | 2175 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); |
c906108c | 2176 | } |
251d32d9 | 2177 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 2178 | { |
73869dc2 | 2179 | dwarf2_per_objfile->abbrev.s.asection = sectp; |
dce234bc | 2180 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); |
c906108c | 2181 | } |
251d32d9 | 2182 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 2183 | { |
73869dc2 | 2184 | dwarf2_per_objfile->line.s.asection = sectp; |
dce234bc | 2185 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); |
c906108c | 2186 | } |
251d32d9 | 2187 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 2188 | { |
73869dc2 | 2189 | dwarf2_per_objfile->loc.s.asection = sectp; |
dce234bc | 2190 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); |
c906108c | 2191 | } |
251d32d9 | 2192 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 2193 | { |
73869dc2 | 2194 | dwarf2_per_objfile->macinfo.s.asection = sectp; |
dce234bc | 2195 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); |
c906108c | 2196 | } |
cf2c3c16 TT |
2197 | else if (section_is_p (sectp->name, &names->macro)) |
2198 | { | |
73869dc2 | 2199 | dwarf2_per_objfile->macro.s.asection = sectp; |
cf2c3c16 TT |
2200 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); |
2201 | } | |
251d32d9 | 2202 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 2203 | { |
73869dc2 | 2204 | dwarf2_per_objfile->str.s.asection = sectp; |
dce234bc | 2205 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); |
c906108c | 2206 | } |
3019eac3 DE |
2207 | else if (section_is_p (sectp->name, &names->addr)) |
2208 | { | |
73869dc2 | 2209 | dwarf2_per_objfile->addr.s.asection = sectp; |
3019eac3 DE |
2210 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); |
2211 | } | |
251d32d9 | 2212 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 2213 | { |
73869dc2 | 2214 | dwarf2_per_objfile->frame.s.asection = sectp; |
dce234bc | 2215 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2216 | } |
251d32d9 | 2217 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 2218 | { |
73869dc2 | 2219 | dwarf2_per_objfile->eh_frame.s.asection = sectp; |
dc7650b8 | 2220 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2221 | } |
251d32d9 | 2222 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 2223 | { |
73869dc2 | 2224 | dwarf2_per_objfile->ranges.s.asection = sectp; |
dce234bc | 2225 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); |
af34e669 | 2226 | } |
251d32d9 | 2227 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 2228 | { |
8b70b953 TT |
2229 | struct dwarf2_section_info type_section; |
2230 | ||
2231 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 2232 | type_section.s.asection = sectp; |
8b70b953 TT |
2233 | type_section.size = bfd_get_section_size (sectp); |
2234 | ||
2235 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
2236 | &type_section); | |
348e048f | 2237 | } |
251d32d9 | 2238 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd | 2239 | { |
73869dc2 | 2240 | dwarf2_per_objfile->gdb_index.s.asection = sectp; |
9291a0cd TT |
2241 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); |
2242 | } | |
dce234bc | 2243 | |
b4e1fd61 | 2244 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 FR |
2245 | && bfd_section_vma (abfd, sectp) == 0) |
2246 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
2247 | } |
2248 | ||
fceca515 DE |
2249 | /* A helper function that decides whether a section is empty, |
2250 | or not present. */ | |
9e0ac564 TT |
2251 | |
2252 | static int | |
19ac8c2e | 2253 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2254 | { |
73869dc2 DE |
2255 | if (section->is_virtual) |
2256 | return section->size == 0; | |
2257 | return section->s.asection == NULL || section->size == 0; | |
9e0ac564 TT |
2258 | } |
2259 | ||
3019eac3 DE |
2260 | /* Read the contents of the section INFO. |
2261 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2262 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2263 | of the DWO file. | |
dce234bc | 2264 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2265 | |
dce234bc PP |
2266 | static void |
2267 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2268 | { |
a32a8923 | 2269 | asection *sectp; |
3019eac3 | 2270 | bfd *abfd; |
dce234bc | 2271 | gdb_byte *buf, *retbuf; |
c906108c | 2272 | |
be391dca TT |
2273 | if (info->readin) |
2274 | return; | |
dce234bc | 2275 | info->buffer = NULL; |
be391dca | 2276 | info->readin = 1; |
188dd5d6 | 2277 | |
9e0ac564 | 2278 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2279 | return; |
c906108c | 2280 | |
a32a8923 | 2281 | sectp = get_section_bfd_section (info); |
3019eac3 | 2282 | |
73869dc2 DE |
2283 | /* If this is a virtual section we need to read in the real one first. */ |
2284 | if (info->is_virtual) | |
2285 | { | |
2286 | struct dwarf2_section_info *containing_section = | |
2287 | get_containing_section (info); | |
2288 | ||
2289 | gdb_assert (sectp != NULL); | |
2290 | if ((sectp->flags & SEC_RELOC) != 0) | |
2291 | { | |
2292 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2293 | " supported in section %s [in module %s]"), | |
2294 | get_section_name (info), get_section_file_name (info)); | |
2295 | } | |
2296 | dwarf2_read_section (objfile, containing_section); | |
2297 | /* Other code should have already caught virtual sections that don't | |
2298 | fit. */ | |
2299 | gdb_assert (info->virtual_offset + info->size | |
2300 | <= containing_section->size); | |
2301 | /* If the real section is empty or there was a problem reading the | |
2302 | section we shouldn't get here. */ | |
2303 | gdb_assert (containing_section->buffer != NULL); | |
2304 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2305 | return; | |
2306 | } | |
2307 | ||
4bf44c1c TT |
2308 | /* If the section has relocations, we must read it ourselves. |
2309 | Otherwise we attach it to the BFD. */ | |
2310 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2311 | { |
d521ce57 | 2312 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2313 | return; |
dce234bc | 2314 | } |
dce234bc | 2315 | |
4bf44c1c TT |
2316 | buf = obstack_alloc (&objfile->objfile_obstack, info->size); |
2317 | info->buffer = buf; | |
dce234bc PP |
2318 | |
2319 | /* When debugging .o files, we may need to apply relocations; see | |
2320 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2321 | We never compress sections in .o files, so we only need to | |
2322 | try this when the section is not compressed. */ | |
ac8035ab | 2323 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2324 | if (retbuf != NULL) |
2325 | { | |
2326 | info->buffer = retbuf; | |
2327 | return; | |
2328 | } | |
2329 | ||
a32a8923 DE |
2330 | abfd = get_section_bfd_owner (info); |
2331 | gdb_assert (abfd != NULL); | |
2332 | ||
dce234bc PP |
2333 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2334 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2335 | { |
2336 | error (_("Dwarf Error: Can't read DWARF data" | |
2337 | " in section %s [in module %s]"), | |
2338 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2339 | } | |
dce234bc PP |
2340 | } |
2341 | ||
9e0ac564 TT |
2342 | /* A helper function that returns the size of a section in a safe way. |
2343 | If you are positive that the section has been read before using the | |
2344 | size, then it is safe to refer to the dwarf2_section_info object's | |
2345 | "size" field directly. In other cases, you must call this | |
2346 | function, because for compressed sections the size field is not set | |
2347 | correctly until the section has been read. */ | |
2348 | ||
2349 | static bfd_size_type | |
2350 | dwarf2_section_size (struct objfile *objfile, | |
2351 | struct dwarf2_section_info *info) | |
2352 | { | |
2353 | if (!info->readin) | |
2354 | dwarf2_read_section (objfile, info); | |
2355 | return info->size; | |
2356 | } | |
2357 | ||
dce234bc | 2358 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2359 | SECTION_NAME. */ |
af34e669 | 2360 | |
dce234bc | 2361 | void |
3017a003 TG |
2362 | dwarf2_get_section_info (struct objfile *objfile, |
2363 | enum dwarf2_section_enum sect, | |
d521ce57 | 2364 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2365 | bfd_size_type *sizep) |
2366 | { | |
2367 | struct dwarf2_per_objfile *data | |
2368 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
2369 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
2370 | |
2371 | /* We may see an objfile without any DWARF, in which case we just | |
2372 | return nothing. */ | |
2373 | if (data == NULL) | |
2374 | { | |
2375 | *sectp = NULL; | |
2376 | *bufp = NULL; | |
2377 | *sizep = 0; | |
2378 | return; | |
2379 | } | |
3017a003 TG |
2380 | switch (sect) |
2381 | { | |
2382 | case DWARF2_DEBUG_FRAME: | |
2383 | info = &data->frame; | |
2384 | break; | |
2385 | case DWARF2_EH_FRAME: | |
2386 | info = &data->eh_frame; | |
2387 | break; | |
2388 | default: | |
2389 | gdb_assert_not_reached ("unexpected section"); | |
2390 | } | |
dce234bc | 2391 | |
9e0ac564 | 2392 | dwarf2_read_section (objfile, info); |
dce234bc | 2393 | |
a32a8923 | 2394 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2395 | *bufp = info->buffer; |
2396 | *sizep = info->size; | |
2397 | } | |
2398 | ||
36586728 TT |
2399 | /* A helper function to find the sections for a .dwz file. */ |
2400 | ||
2401 | static void | |
2402 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2403 | { | |
2404 | struct dwz_file *dwz_file = arg; | |
2405 | ||
2406 | /* Note that we only support the standard ELF names, because .dwz | |
2407 | is ELF-only (at the time of writing). */ | |
2408 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2409 | { | |
73869dc2 | 2410 | dwz_file->abbrev.s.asection = sectp; |
36586728 TT |
2411 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2412 | } | |
2413 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2414 | { | |
73869dc2 | 2415 | dwz_file->info.s.asection = sectp; |
36586728 TT |
2416 | dwz_file->info.size = bfd_get_section_size (sectp); |
2417 | } | |
2418 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2419 | { | |
73869dc2 | 2420 | dwz_file->str.s.asection = sectp; |
36586728 TT |
2421 | dwz_file->str.size = bfd_get_section_size (sectp); |
2422 | } | |
2423 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2424 | { | |
73869dc2 | 2425 | dwz_file->line.s.asection = sectp; |
36586728 TT |
2426 | dwz_file->line.size = bfd_get_section_size (sectp); |
2427 | } | |
2428 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2429 | { | |
73869dc2 | 2430 | dwz_file->macro.s.asection = sectp; |
36586728 TT |
2431 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2432 | } | |
2ec9a5e0 TT |
2433 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2434 | { | |
73869dc2 | 2435 | dwz_file->gdb_index.s.asection = sectp; |
2ec9a5e0 TT |
2436 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2437 | } | |
36586728 TT |
2438 | } |
2439 | ||
4db1a1dc TT |
2440 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2441 | there is no .gnu_debugaltlink section in the file. Error if there | |
2442 | is such a section but the file cannot be found. */ | |
36586728 TT |
2443 | |
2444 | static struct dwz_file * | |
2445 | dwarf2_get_dwz_file (void) | |
2446 | { | |
4db1a1dc TT |
2447 | bfd *dwz_bfd; |
2448 | char *data; | |
36586728 TT |
2449 | struct cleanup *cleanup; |
2450 | const char *filename; | |
2451 | struct dwz_file *result; | |
acd13123 | 2452 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2453 | size_t buildid_len; |
2454 | bfd_byte *buildid; | |
36586728 TT |
2455 | |
2456 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2457 | return dwarf2_per_objfile->dwz_file; | |
2458 | ||
4db1a1dc TT |
2459 | bfd_set_error (bfd_error_no_error); |
2460 | data = bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
acd13123 | 2461 | &buildid_len_arg, &buildid); |
4db1a1dc TT |
2462 | if (data == NULL) |
2463 | { | |
2464 | if (bfd_get_error () == bfd_error_no_error) | |
2465 | return NULL; | |
2466 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2467 | bfd_errmsg (bfd_get_error ())); | |
2468 | } | |
36586728 | 2469 | cleanup = make_cleanup (xfree, data); |
dc294be5 | 2470 | make_cleanup (xfree, buildid); |
36586728 | 2471 | |
acd13123 TT |
2472 | buildid_len = (size_t) buildid_len_arg; |
2473 | ||
f9d83a0b | 2474 | filename = (const char *) data; |
36586728 TT |
2475 | if (!IS_ABSOLUTE_PATH (filename)) |
2476 | { | |
4262abfb | 2477 | char *abs = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); |
36586728 TT |
2478 | char *rel; |
2479 | ||
2480 | make_cleanup (xfree, abs); | |
2481 | abs = ldirname (abs); | |
2482 | make_cleanup (xfree, abs); | |
2483 | ||
2484 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2485 | make_cleanup (xfree, rel); | |
2486 | filename = rel; | |
2487 | } | |
2488 | ||
dc294be5 TT |
2489 | /* First try the file name given in the section. If that doesn't |
2490 | work, try to use the build-id instead. */ | |
36586728 | 2491 | dwz_bfd = gdb_bfd_open (filename, gnutarget, -1); |
dc294be5 | 2492 | if (dwz_bfd != NULL) |
36586728 | 2493 | { |
dc294be5 TT |
2494 | if (!build_id_verify (dwz_bfd, buildid_len, buildid)) |
2495 | { | |
2496 | gdb_bfd_unref (dwz_bfd); | |
2497 | dwz_bfd = NULL; | |
2498 | } | |
36586728 TT |
2499 | } |
2500 | ||
dc294be5 TT |
2501 | if (dwz_bfd == NULL) |
2502 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2503 | ||
2504 | if (dwz_bfd == NULL) | |
2505 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2506 | objfile_name (dwarf2_per_objfile->objfile)); | |
2507 | ||
36586728 TT |
2508 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
2509 | struct dwz_file); | |
2510 | result->dwz_bfd = dwz_bfd; | |
2511 | ||
2512 | bfd_map_over_sections (dwz_bfd, locate_dwz_sections, result); | |
2513 | ||
2514 | do_cleanups (cleanup); | |
2515 | ||
13aaf454 | 2516 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, dwz_bfd); |
8d2cc612 | 2517 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2518 | return result; |
2519 | } | |
9291a0cd | 2520 | \f |
7b9f3c50 DE |
2521 | /* DWARF quick_symbols_functions support. */ |
2522 | ||
2523 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2524 | unique line tables, so we maintain a separate table of all .debug_line | |
2525 | derived entries to support the sharing. | |
2526 | All the quick functions need is the list of file names. We discard the | |
2527 | line_header when we're done and don't need to record it here. */ | |
2528 | struct quick_file_names | |
2529 | { | |
094b34ac DE |
2530 | /* The data used to construct the hash key. */ |
2531 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2532 | |
2533 | /* The number of entries in file_names, real_names. */ | |
2534 | unsigned int num_file_names; | |
2535 | ||
2536 | /* The file names from the line table, after being run through | |
2537 | file_full_name. */ | |
2538 | const char **file_names; | |
2539 | ||
2540 | /* The file names from the line table after being run through | |
2541 | gdb_realpath. These are computed lazily. */ | |
2542 | const char **real_names; | |
2543 | }; | |
2544 | ||
2545 | /* When using the index (and thus not using psymtabs), each CU has an | |
2546 | object of this type. This is used to hold information needed by | |
2547 | the various "quick" methods. */ | |
2548 | struct dwarf2_per_cu_quick_data | |
2549 | { | |
2550 | /* The file table. This can be NULL if there was no file table | |
2551 | or it's currently not read in. | |
2552 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2553 | struct quick_file_names *file_names; | |
2554 | ||
2555 | /* The corresponding symbol table. This is NULL if symbols for this | |
2556 | CU have not yet been read. */ | |
43f3e411 | 2557 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2558 | |
2559 | /* A temporary mark bit used when iterating over all CUs in | |
2560 | expand_symtabs_matching. */ | |
2561 | unsigned int mark : 1; | |
2562 | ||
2563 | /* True if we've tried to read the file table and found there isn't one. | |
2564 | There will be no point in trying to read it again next time. */ | |
2565 | unsigned int no_file_data : 1; | |
2566 | }; | |
2567 | ||
094b34ac DE |
2568 | /* Utility hash function for a stmt_list_hash. */ |
2569 | ||
2570 | static hashval_t | |
2571 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2572 | { | |
2573 | hashval_t v = 0; | |
2574 | ||
2575 | if (stmt_list_hash->dwo_unit != NULL) | |
2576 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2577 | v += stmt_list_hash->line_offset.sect_off; | |
2578 | return v; | |
2579 | } | |
2580 | ||
2581 | /* Utility equality function for a stmt_list_hash. */ | |
2582 | ||
2583 | static int | |
2584 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2585 | const struct stmt_list_hash *rhs) | |
2586 | { | |
2587 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2588 | return 0; | |
2589 | if (lhs->dwo_unit != NULL | |
2590 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2591 | return 0; | |
2592 | ||
2593 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2594 | } | |
2595 | ||
7b9f3c50 DE |
2596 | /* Hash function for a quick_file_names. */ |
2597 | ||
2598 | static hashval_t | |
2599 | hash_file_name_entry (const void *e) | |
2600 | { | |
2601 | const struct quick_file_names *file_data = e; | |
2602 | ||
094b34ac | 2603 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2604 | } |
2605 | ||
2606 | /* Equality function for a quick_file_names. */ | |
2607 | ||
2608 | static int | |
2609 | eq_file_name_entry (const void *a, const void *b) | |
2610 | { | |
2611 | const struct quick_file_names *ea = a; | |
2612 | const struct quick_file_names *eb = b; | |
2613 | ||
094b34ac | 2614 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2615 | } |
2616 | ||
2617 | /* Delete function for a quick_file_names. */ | |
2618 | ||
2619 | static void | |
2620 | delete_file_name_entry (void *e) | |
2621 | { | |
2622 | struct quick_file_names *file_data = e; | |
2623 | int i; | |
2624 | ||
2625 | for (i = 0; i < file_data->num_file_names; ++i) | |
2626 | { | |
2627 | xfree ((void*) file_data->file_names[i]); | |
2628 | if (file_data->real_names) | |
2629 | xfree ((void*) file_data->real_names[i]); | |
2630 | } | |
2631 | ||
2632 | /* The space for the struct itself lives on objfile_obstack, | |
2633 | so we don't free it here. */ | |
2634 | } | |
2635 | ||
2636 | /* Create a quick_file_names hash table. */ | |
2637 | ||
2638 | static htab_t | |
2639 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2640 | { | |
2641 | return htab_create_alloc (nr_initial_entries, | |
2642 | hash_file_name_entry, eq_file_name_entry, | |
2643 | delete_file_name_entry, xcalloc, xfree); | |
2644 | } | |
9291a0cd | 2645 | |
918dd910 JK |
2646 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2647 | have to be created afterwards. You should call age_cached_comp_units after | |
2648 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2649 | ||
2650 | static void | |
2651 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2652 | { | |
3019eac3 | 2653 | if (per_cu->is_debug_types) |
e5fe5e75 | 2654 | load_full_type_unit (per_cu); |
918dd910 | 2655 | else |
95554aad | 2656 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2657 | |
918dd910 | 2658 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2659 | |
2660 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2661 | } |
2662 | ||
a0f42c21 | 2663 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2664 | |
9291a0cd | 2665 | static void |
a0f42c21 | 2666 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2667 | { |
2668 | struct cleanup *back_to; | |
2669 | ||
f4dc4d17 DE |
2670 | /* Skip type_unit_groups, reading the type units they contain |
2671 | is handled elsewhere. */ | |
2672 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2673 | return; | |
2674 | ||
9291a0cd TT |
2675 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2676 | ||
95554aad | 2677 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2678 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2679 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2680 | { | |
2681 | queue_comp_unit (per_cu, language_minimal); | |
2682 | load_cu (per_cu); | |
89e63ee4 DE |
2683 | |
2684 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2685 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2686 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2687 | if (!per_cu->is_debug_types | |
2688 | && per_cu->cu->dwo_unit != NULL | |
2689 | && dwarf2_per_objfile->index_table != NULL | |
2690 | && dwarf2_per_objfile->index_table->version <= 7 | |
2691 | /* DWP files aren't supported yet. */ | |
2692 | && get_dwp_file () == NULL) | |
2693 | queue_and_load_all_dwo_tus (per_cu); | |
95554aad | 2694 | } |
9291a0cd | 2695 | |
a0f42c21 | 2696 | process_queue (); |
9291a0cd TT |
2697 | |
2698 | /* Age the cache, releasing compilation units that have not | |
2699 | been used recently. */ | |
2700 | age_cached_comp_units (); | |
2701 | ||
2702 | do_cleanups (back_to); | |
2703 | } | |
2704 | ||
2705 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2706 | the objfile from which this CU came. Returns the resulting symbol | |
2707 | table. */ | |
2fdf6df6 | 2708 | |
43f3e411 | 2709 | static struct compunit_symtab * |
a0f42c21 | 2710 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2711 | { |
95554aad | 2712 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2713 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
2714 | { |
2715 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2716 | increment_reading_symtab (); | |
a0f42c21 | 2717 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2718 | process_cu_includes (); |
9291a0cd TT |
2719 | do_cleanups (back_to); |
2720 | } | |
f194fefb | 2721 | |
43f3e411 | 2722 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2723 | } |
2724 | ||
8832e7e3 | 2725 | /* Return the CU/TU given its index. |
f4dc4d17 DE |
2726 | |
2727 | This is intended for loops like: | |
2728 | ||
2729 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2730 | + dwarf2_per_objfile->n_type_units); ++i) | |
2731 | { | |
8832e7e3 | 2732 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
f4dc4d17 DE |
2733 | |
2734 | ...; | |
2735 | } | |
2736 | */ | |
2fdf6df6 | 2737 | |
1fd400ff | 2738 | static struct dwarf2_per_cu_data * |
8832e7e3 | 2739 | dw2_get_cutu (int index) |
1fd400ff TT |
2740 | { |
2741 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2742 | { | |
f4dc4d17 | 2743 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2744 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2745 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2746 | } |
2747 | ||
2748 | return dwarf2_per_objfile->all_comp_units[index]; | |
2749 | } | |
2750 | ||
8832e7e3 DE |
2751 | /* Return the CU given its index. |
2752 | This differs from dw2_get_cutu in that it's for when you know INDEX | |
2753 | refers to a CU. */ | |
f4dc4d17 DE |
2754 | |
2755 | static struct dwarf2_per_cu_data * | |
8832e7e3 | 2756 | dw2_get_cu (int index) |
f4dc4d17 | 2757 | { |
8832e7e3 | 2758 | gdb_assert (index >= 0 && index < dwarf2_per_objfile->n_comp_units); |
f4dc4d17 | 2759 | |
1fd400ff TT |
2760 | return dwarf2_per_objfile->all_comp_units[index]; |
2761 | } | |
2762 | ||
2ec9a5e0 TT |
2763 | /* A helper for create_cus_from_index that handles a given list of |
2764 | CUs. */ | |
2fdf6df6 | 2765 | |
74a0d9f6 | 2766 | static void |
2ec9a5e0 TT |
2767 | create_cus_from_index_list (struct objfile *objfile, |
2768 | const gdb_byte *cu_list, offset_type n_elements, | |
2769 | struct dwarf2_section_info *section, | |
2770 | int is_dwz, | |
2771 | int base_offset) | |
9291a0cd TT |
2772 | { |
2773 | offset_type i; | |
9291a0cd | 2774 | |
2ec9a5e0 | 2775 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2776 | { |
2777 | struct dwarf2_per_cu_data *the_cu; | |
2778 | ULONGEST offset, length; | |
2779 | ||
74a0d9f6 JK |
2780 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2781 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2782 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2783 | cu_list += 2 * 8; |
2784 | ||
2785 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2786 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2787 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2788 | the_cu->length = length; |
2789 | the_cu->objfile = objfile; | |
8a0459fd | 2790 | the_cu->section = section; |
9291a0cd TT |
2791 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2792 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2793 | the_cu->is_dwz = is_dwz; |
2794 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2795 | } |
9291a0cd TT |
2796 | } |
2797 | ||
2ec9a5e0 | 2798 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2799 | the CU objects for this objfile. */ |
2ec9a5e0 | 2800 | |
74a0d9f6 | 2801 | static void |
2ec9a5e0 TT |
2802 | create_cus_from_index (struct objfile *objfile, |
2803 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2804 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2805 | { | |
2806 | struct dwz_file *dwz; | |
2807 | ||
2808 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
2809 | dwarf2_per_objfile->all_comp_units | |
2810 | = obstack_alloc (&objfile->objfile_obstack, | |
2811 | dwarf2_per_objfile->n_comp_units | |
2812 | * sizeof (struct dwarf2_per_cu_data *)); | |
2813 | ||
74a0d9f6 JK |
2814 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2815 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2816 | |
2817 | if (dwz_elements == 0) | |
74a0d9f6 | 2818 | return; |
2ec9a5e0 TT |
2819 | |
2820 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2821 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2822 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2823 | } |
2824 | ||
1fd400ff | 2825 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2826 | |
74a0d9f6 | 2827 | static void |
673bfd45 | 2828 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2829 | struct dwarf2_section_info *section, |
673bfd45 DE |
2830 | const gdb_byte *bytes, |
2831 | offset_type elements) | |
1fd400ff TT |
2832 | { |
2833 | offset_type i; | |
673bfd45 | 2834 | htab_t sig_types_hash; |
1fd400ff | 2835 | |
6aa5f3a6 DE |
2836 | dwarf2_per_objfile->n_type_units |
2837 | = dwarf2_per_objfile->n_allocated_type_units | |
2838 | = elements / 3; | |
d467dd73 | 2839 | dwarf2_per_objfile->all_type_units |
a2ce51a0 DE |
2840 | = xmalloc (dwarf2_per_objfile->n_type_units |
2841 | * sizeof (struct signatured_type *)); | |
1fd400ff | 2842 | |
673bfd45 | 2843 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2844 | |
2845 | for (i = 0; i < elements; i += 3) | |
2846 | { | |
52dc124a DE |
2847 | struct signatured_type *sig_type; |
2848 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2849 | void **slot; |
2850 | ||
74a0d9f6 JK |
2851 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2852 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2853 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2854 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2855 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2856 | bytes += 3 * 8; | |
2857 | ||
52dc124a | 2858 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2859 | struct signatured_type); |
52dc124a | 2860 | sig_type->signature = signature; |
3019eac3 DE |
2861 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2862 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 2863 | sig_type->per_cu.section = section; |
52dc124a DE |
2864 | sig_type->per_cu.offset.sect_off = offset; |
2865 | sig_type->per_cu.objfile = objfile; | |
2866 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2867 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2868 | struct dwarf2_per_cu_quick_data); | |
2869 | ||
52dc124a DE |
2870 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2871 | *slot = sig_type; | |
1fd400ff | 2872 | |
b4dd5633 | 2873 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2874 | } |
2875 | ||
673bfd45 | 2876 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2877 | } |
2878 | ||
9291a0cd TT |
2879 | /* Read the address map data from the mapped index, and use it to |
2880 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2881 | |
9291a0cd TT |
2882 | static void |
2883 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2884 | { | |
3e29f34a | 2885 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd TT |
2886 | const gdb_byte *iter, *end; |
2887 | struct obstack temp_obstack; | |
2888 | struct addrmap *mutable_map; | |
2889 | struct cleanup *cleanup; | |
2890 | CORE_ADDR baseaddr; | |
2891 | ||
2892 | obstack_init (&temp_obstack); | |
2893 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2894 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2895 | ||
2896 | iter = index->address_table; | |
2897 | end = iter + index->address_table_size; | |
2898 | ||
2899 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2900 | ||
2901 | while (iter < end) | |
2902 | { | |
2903 | ULONGEST hi, lo, cu_index; | |
2904 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2905 | iter += 8; | |
2906 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2907 | iter += 8; | |
2908 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2909 | iter += 4; | |
f652bce2 | 2910 | |
24a55014 | 2911 | if (lo > hi) |
f652bce2 | 2912 | { |
24a55014 DE |
2913 | complaint (&symfile_complaints, |
2914 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 2915 | hex_string (lo), hex_string (hi)); |
24a55014 | 2916 | continue; |
f652bce2 | 2917 | } |
24a55014 DE |
2918 | |
2919 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
2920 | { |
2921 | complaint (&symfile_complaints, | |
2922 | _(".gdb_index address table has invalid CU number %u"), | |
2923 | (unsigned) cu_index); | |
24a55014 | 2924 | continue; |
f652bce2 | 2925 | } |
24a55014 | 2926 | |
3e29f34a MR |
2927 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
2928 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
2929 | addrmap_set_empty (mutable_map, lo, hi - 1, dw2_get_cutu (cu_index)); | |
9291a0cd TT |
2930 | } |
2931 | ||
2932 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2933 | &objfile->objfile_obstack); | |
2934 | do_cleanups (cleanup); | |
2935 | } | |
2936 | ||
59d7bcaf JK |
2937 | /* The hash function for strings in the mapped index. This is the same as |
2938 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2939 | implementation. This is necessary because the hash function is tied to the | |
2940 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2941 | SYMBOL_HASH_NEXT. |
2942 | ||
2943 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2944 | |
9291a0cd | 2945 | static hashval_t |
559a7a62 | 2946 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2947 | { |
2948 | const unsigned char *str = (const unsigned char *) p; | |
2949 | hashval_t r = 0; | |
2950 | unsigned char c; | |
2951 | ||
2952 | while ((c = *str++) != 0) | |
559a7a62 JK |
2953 | { |
2954 | if (index_version >= 5) | |
2955 | c = tolower (c); | |
2956 | r = r * 67 + c - 113; | |
2957 | } | |
9291a0cd TT |
2958 | |
2959 | return r; | |
2960 | } | |
2961 | ||
2962 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2963 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2964 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2965 | |
9291a0cd TT |
2966 | static int |
2967 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2968 | offset_type **vec_out) | |
2969 | { | |
0cf03b49 JK |
2970 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2971 | offset_type hash; | |
9291a0cd | 2972 | offset_type slot, step; |
559a7a62 | 2973 | int (*cmp) (const char *, const char *); |
9291a0cd | 2974 | |
0cf03b49 JK |
2975 | if (current_language->la_language == language_cplus |
2976 | || current_language->la_language == language_java | |
45280282 IB |
2977 | || current_language->la_language == language_fortran |
2978 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2979 | { |
2980 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2981 | not contain any. */ | |
a8719064 | 2982 | |
72998fb3 | 2983 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2984 | { |
72998fb3 | 2985 | char *without_params = cp_remove_params (name); |
0cf03b49 | 2986 | |
72998fb3 DE |
2987 | if (without_params != NULL) |
2988 | { | |
2989 | make_cleanup (xfree, without_params); | |
2990 | name = without_params; | |
2991 | } | |
0cf03b49 JK |
2992 | } |
2993 | } | |
2994 | ||
559a7a62 | 2995 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2996 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2997 | simulate our NAME being searched is also lowercased. */ |
2998 | hash = mapped_index_string_hash ((index->version == 4 | |
2999 | && case_sensitivity == case_sensitive_off | |
3000 | ? 5 : index->version), | |
3001 | name); | |
3002 | ||
3876f04e DE |
3003 | slot = hash & (index->symbol_table_slots - 1); |
3004 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 3005 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3006 | |
3007 | for (;;) | |
3008 | { | |
3009 | /* Convert a slot number to an offset into the table. */ | |
3010 | offset_type i = 2 * slot; | |
3011 | const char *str; | |
3876f04e | 3012 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
3013 | { |
3014 | do_cleanups (back_to); | |
3015 | return 0; | |
3016 | } | |
9291a0cd | 3017 | |
3876f04e | 3018 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 3019 | if (!cmp (name, str)) |
9291a0cd TT |
3020 | { |
3021 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 3022 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 3023 | do_cleanups (back_to); |
9291a0cd TT |
3024 | return 1; |
3025 | } | |
3026 | ||
3876f04e | 3027 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
3028 | } |
3029 | } | |
3030 | ||
2ec9a5e0 TT |
3031 | /* A helper function that reads the .gdb_index from SECTION and fills |
3032 | in MAP. FILENAME is the name of the file containing the section; | |
3033 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
3034 | ok to use deprecated sections. | |
3035 | ||
3036 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3037 | out parameters that are filled in with information about the CU and | |
3038 | TU lists in the section. | |
3039 | ||
3040 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3041 | |
9291a0cd | 3042 | static int |
2ec9a5e0 TT |
3043 | read_index_from_section (struct objfile *objfile, |
3044 | const char *filename, | |
3045 | int deprecated_ok, | |
3046 | struct dwarf2_section_info *section, | |
3047 | struct mapped_index *map, | |
3048 | const gdb_byte **cu_list, | |
3049 | offset_type *cu_list_elements, | |
3050 | const gdb_byte **types_list, | |
3051 | offset_type *types_list_elements) | |
9291a0cd | 3052 | { |
948f8e3d | 3053 | const gdb_byte *addr; |
2ec9a5e0 | 3054 | offset_type version; |
b3b272e1 | 3055 | offset_type *metadata; |
1fd400ff | 3056 | int i; |
9291a0cd | 3057 | |
2ec9a5e0 | 3058 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3059 | return 0; |
82430852 JK |
3060 | |
3061 | /* Older elfutils strip versions could keep the section in the main | |
3062 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3063 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3064 | return 0; |
3065 | ||
2ec9a5e0 | 3066 | dwarf2_read_section (objfile, section); |
9291a0cd | 3067 | |
2ec9a5e0 | 3068 | addr = section->buffer; |
9291a0cd | 3069 | /* Version check. */ |
1fd400ff | 3070 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3071 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3072 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3073 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3074 | indices. */ |
831adc1f | 3075 | if (version < 4) |
481860b3 GB |
3076 | { |
3077 | static int warning_printed = 0; | |
3078 | if (!warning_printed) | |
3079 | { | |
3080 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3081 | filename); |
481860b3 GB |
3082 | warning_printed = 1; |
3083 | } | |
3084 | return 0; | |
3085 | } | |
3086 | /* Index version 4 uses a different hash function than index version | |
3087 | 5 and later. | |
3088 | ||
3089 | Versions earlier than 6 did not emit psymbols for inlined | |
3090 | functions. Using these files will cause GDB not to be able to | |
3091 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3092 | indices unless the user has done |
3093 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3094 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3095 | { |
3096 | static int warning_printed = 0; | |
3097 | if (!warning_printed) | |
3098 | { | |
e615022a DE |
3099 | warning (_("\ |
3100 | Skipping deprecated .gdb_index section in %s.\n\ | |
3101 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3102 | to use the section anyway."), | |
2ec9a5e0 | 3103 | filename); |
481860b3 GB |
3104 | warning_printed = 1; |
3105 | } | |
3106 | return 0; | |
3107 | } | |
796a7ff8 | 3108 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3109 | of the TU (for symbols coming from TUs), |
3110 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3111 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3112 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3113 | These are just performance bugs, and we can't distinguish gdb-generated | |
3114 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3115 | |
481860b3 | 3116 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3117 | longer backward compatible. */ |
796a7ff8 | 3118 | if (version > 8) |
594e8718 | 3119 | return 0; |
9291a0cd | 3120 | |
559a7a62 | 3121 | map->version = version; |
2ec9a5e0 | 3122 | map->total_size = section->size; |
9291a0cd TT |
3123 | |
3124 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3125 | |
3126 | i = 0; | |
2ec9a5e0 TT |
3127 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3128 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3129 | / 8); | |
1fd400ff TT |
3130 | ++i; |
3131 | ||
2ec9a5e0 TT |
3132 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3133 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3134 | - MAYBE_SWAP (metadata[i])) | |
3135 | / 8); | |
987d643c | 3136 | ++i; |
1fd400ff TT |
3137 | |
3138 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3139 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3140 | - MAYBE_SWAP (metadata[i])); | |
3141 | ++i; | |
3142 | ||
3876f04e DE |
3143 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3144 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3145 | - MAYBE_SWAP (metadata[i])) | |
3146 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3147 | ++i; |
9291a0cd | 3148 | |
f9d83a0b | 3149 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3150 | |
2ec9a5e0 TT |
3151 | return 1; |
3152 | } | |
3153 | ||
3154 | ||
3155 | /* Read the index file. If everything went ok, initialize the "quick" | |
3156 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
3157 | ||
3158 | static int | |
3159 | dwarf2_read_index (struct objfile *objfile) | |
3160 | { | |
3161 | struct mapped_index local_map, *map; | |
3162 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3163 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3164 | struct dwz_file *dwz; |
2ec9a5e0 | 3165 | |
4262abfb | 3166 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3167 | use_deprecated_index_sections, |
3168 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3169 | &cu_list, &cu_list_elements, | |
3170 | &types_list, &types_list_elements)) | |
3171 | return 0; | |
3172 | ||
0fefef59 | 3173 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3174 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3175 | return 0; |
3176 | ||
2ec9a5e0 TT |
3177 | /* If there is a .dwz file, read it so we can get its CU list as |
3178 | well. */ | |
4db1a1dc TT |
3179 | dwz = dwarf2_get_dwz_file (); |
3180 | if (dwz != NULL) | |
2ec9a5e0 | 3181 | { |
2ec9a5e0 TT |
3182 | struct mapped_index dwz_map; |
3183 | const gdb_byte *dwz_types_ignore; | |
3184 | offset_type dwz_types_elements_ignore; | |
3185 | ||
3186 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3187 | 1, | |
3188 | &dwz->gdb_index, &dwz_map, | |
3189 | &dwz_list, &dwz_list_elements, | |
3190 | &dwz_types_ignore, | |
3191 | &dwz_types_elements_ignore)) | |
3192 | { | |
3193 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3194 | bfd_get_filename (dwz->dwz_bfd)); | |
3195 | return 0; | |
3196 | } | |
3197 | } | |
3198 | ||
74a0d9f6 JK |
3199 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3200 | dwz_list_elements); | |
1fd400ff | 3201 | |
8b70b953 TT |
3202 | if (types_list_elements) |
3203 | { | |
3204 | struct dwarf2_section_info *section; | |
3205 | ||
3206 | /* We can only handle a single .debug_types when we have an | |
3207 | index. */ | |
3208 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3209 | return 0; | |
3210 | ||
3211 | section = VEC_index (dwarf2_section_info_def, | |
3212 | dwarf2_per_objfile->types, 0); | |
3213 | ||
74a0d9f6 JK |
3214 | create_signatured_type_table_from_index (objfile, section, types_list, |
3215 | types_list_elements); | |
8b70b953 | 3216 | } |
9291a0cd | 3217 | |
2ec9a5e0 TT |
3218 | create_addrmap_from_index (objfile, &local_map); |
3219 | ||
3220 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
3221 | *map = local_map; | |
9291a0cd TT |
3222 | |
3223 | dwarf2_per_objfile->index_table = map; | |
3224 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3225 | dwarf2_per_objfile->quick_file_names_table = |
3226 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3227 | |
3228 | return 1; | |
3229 | } | |
3230 | ||
3231 | /* A helper for the "quick" functions which sets the global | |
3232 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3233 | |
9291a0cd TT |
3234 | static void |
3235 | dw2_setup (struct objfile *objfile) | |
3236 | { | |
3237 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
3238 | gdb_assert (dwarf2_per_objfile); | |
3239 | } | |
3240 | ||
dee91e82 | 3241 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3242 | |
dee91e82 DE |
3243 | static void |
3244 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3245 | const gdb_byte *info_ptr, |
dee91e82 DE |
3246 | struct die_info *comp_unit_die, |
3247 | int has_children, | |
3248 | void *data) | |
9291a0cd | 3249 | { |
dee91e82 DE |
3250 | struct dwarf2_cu *cu = reader->cu; |
3251 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3252 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3253 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 3254 | struct line_header *lh; |
9291a0cd | 3255 | struct attribute *attr; |
dee91e82 | 3256 | int i; |
15d034d0 | 3257 | const char *name, *comp_dir; |
7b9f3c50 DE |
3258 | void **slot; |
3259 | struct quick_file_names *qfn; | |
3260 | unsigned int line_offset; | |
9291a0cd | 3261 | |
0186c6a7 DE |
3262 | gdb_assert (! this_cu->is_debug_types); |
3263 | ||
07261596 TT |
3264 | /* Our callers never want to match partial units -- instead they |
3265 | will match the enclosing full CU. */ | |
3266 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3267 | { | |
3268 | this_cu->v.quick->no_file_data = 1; | |
3269 | return; | |
3270 | } | |
3271 | ||
0186c6a7 | 3272 | lh_cu = this_cu; |
7b9f3c50 DE |
3273 | lh = NULL; |
3274 | slot = NULL; | |
3275 | line_offset = 0; | |
dee91e82 DE |
3276 | |
3277 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
3278 | if (attr) |
3279 | { | |
7b9f3c50 DE |
3280 | struct quick_file_names find_entry; |
3281 | ||
3282 | line_offset = DW_UNSND (attr); | |
3283 | ||
3284 | /* We may have already read in this line header (TU line header sharing). | |
3285 | If we have we're done. */ | |
094b34ac DE |
3286 | find_entry.hash.dwo_unit = cu->dwo_unit; |
3287 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3288 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3289 | &find_entry, INSERT); | |
3290 | if (*slot != NULL) | |
3291 | { | |
094b34ac | 3292 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 3293 | return; |
7b9f3c50 DE |
3294 | } |
3295 | ||
3019eac3 | 3296 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3297 | } |
3298 | if (lh == NULL) | |
3299 | { | |
094b34ac | 3300 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3301 | return; |
9291a0cd TT |
3302 | } |
3303 | ||
7b9f3c50 | 3304 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
3305 | qfn->hash.dwo_unit = cu->dwo_unit; |
3306 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3307 | gdb_assert (slot != NULL); |
3308 | *slot = qfn; | |
9291a0cd | 3309 | |
dee91e82 | 3310 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 3311 | |
7b9f3c50 DE |
3312 | qfn->num_file_names = lh->num_file_names; |
3313 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
3314 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 3315 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
3316 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
3317 | qfn->real_names = NULL; | |
9291a0cd | 3318 | |
7b9f3c50 | 3319 | free_line_header (lh); |
7b9f3c50 | 3320 | |
094b34ac | 3321 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3322 | } |
3323 | ||
3324 | /* A helper for the "quick" functions which attempts to read the line | |
3325 | table for THIS_CU. */ | |
3326 | ||
3327 | static struct quick_file_names * | |
e4a48d9d | 3328 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3329 | { |
0186c6a7 DE |
3330 | /* This should never be called for TUs. */ |
3331 | gdb_assert (! this_cu->is_debug_types); | |
3332 | /* Nor type unit groups. */ | |
3333 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3334 | |
dee91e82 DE |
3335 | if (this_cu->v.quick->file_names != NULL) |
3336 | return this_cu->v.quick->file_names; | |
3337 | /* If we know there is no line data, no point in looking again. */ | |
3338 | if (this_cu->v.quick->no_file_data) | |
3339 | return NULL; | |
3340 | ||
0186c6a7 | 3341 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3342 | |
3343 | if (this_cu->v.quick->no_file_data) | |
3344 | return NULL; | |
3345 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3346 | } |
3347 | ||
3348 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3349 | real path for a given file name from the line table. */ |
2fdf6df6 | 3350 | |
9291a0cd | 3351 | static const char * |
7b9f3c50 DE |
3352 | dw2_get_real_path (struct objfile *objfile, |
3353 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3354 | { |
7b9f3c50 DE |
3355 | if (qfn->real_names == NULL) |
3356 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3357 | qfn->num_file_names, const char *); |
9291a0cd | 3358 | |
7b9f3c50 DE |
3359 | if (qfn->real_names[index] == NULL) |
3360 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 3361 | |
7b9f3c50 | 3362 | return qfn->real_names[index]; |
9291a0cd TT |
3363 | } |
3364 | ||
3365 | static struct symtab * | |
3366 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3367 | { | |
43f3e411 | 3368 | struct compunit_symtab *cust; |
9291a0cd | 3369 | int index; |
ae2de4f8 | 3370 | |
9291a0cd TT |
3371 | dw2_setup (objfile); |
3372 | index = dwarf2_per_objfile->n_comp_units - 1; | |
43f3e411 DE |
3373 | cust = dw2_instantiate_symtab (dw2_get_cutu (index)); |
3374 | if (cust == NULL) | |
3375 | return NULL; | |
3376 | return compunit_primary_filetab (cust); | |
9291a0cd TT |
3377 | } |
3378 | ||
7b9f3c50 DE |
3379 | /* Traversal function for dw2_forget_cached_source_info. */ |
3380 | ||
3381 | static int | |
3382 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3383 | { |
7b9f3c50 | 3384 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3385 | |
7b9f3c50 | 3386 | if (file_data->real_names) |
9291a0cd | 3387 | { |
7b9f3c50 | 3388 | int i; |
9291a0cd | 3389 | |
7b9f3c50 | 3390 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3391 | { |
7b9f3c50 DE |
3392 | xfree ((void*) file_data->real_names[i]); |
3393 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3394 | } |
3395 | } | |
7b9f3c50 DE |
3396 | |
3397 | return 1; | |
3398 | } | |
3399 | ||
3400 | static void | |
3401 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3402 | { | |
3403 | dw2_setup (objfile); | |
3404 | ||
3405 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3406 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3407 | } |
3408 | ||
f8eba3c6 TT |
3409 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3410 | the symtabs and calls the iterator. */ | |
3411 | ||
3412 | static int | |
3413 | dw2_map_expand_apply (struct objfile *objfile, | |
3414 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3415 | const char *name, const char *real_path, |
f8eba3c6 TT |
3416 | int (*callback) (struct symtab *, void *), |
3417 | void *data) | |
3418 | { | |
43f3e411 | 3419 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3420 | |
3421 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3422 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3423 | return 0; |
3424 | ||
3425 | /* This may expand more than one symtab, and we want to iterate over | |
3426 | all of them. */ | |
a0f42c21 | 3427 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3428 | |
f5b95b50 | 3429 | return iterate_over_some_symtabs (name, real_path, callback, data, |
43f3e411 | 3430 | objfile->compunit_symtabs, last_made); |
f8eba3c6 TT |
3431 | } |
3432 | ||
3433 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3434 | ||
9291a0cd | 3435 | static int |
f8eba3c6 | 3436 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3437 | const char *real_path, |
f8eba3c6 TT |
3438 | int (*callback) (struct symtab *, void *), |
3439 | void *data) | |
9291a0cd TT |
3440 | { |
3441 | int i; | |
c011a4f4 | 3442 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3443 | |
3444 | dw2_setup (objfile); | |
ae2de4f8 | 3445 | |
848e3e78 DE |
3446 | /* The rule is CUs specify all the files, including those used by |
3447 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3448 | |
848e3e78 | 3449 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3450 | { |
3451 | int j; | |
8832e7e3 | 3452 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3453 | struct quick_file_names *file_data; |
9291a0cd | 3454 | |
3d7bb9d9 | 3455 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3456 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3457 | continue; |
3458 | ||
e4a48d9d | 3459 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3460 | if (file_data == NULL) |
9291a0cd TT |
3461 | continue; |
3462 | ||
7b9f3c50 | 3463 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3464 | { |
7b9f3c50 | 3465 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3466 | const char *this_real_name; |
9291a0cd | 3467 | |
af529f8f | 3468 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3469 | { |
f5b95b50 | 3470 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3471 | callback, data)) |
3472 | return 1; | |
288e77a7 | 3473 | continue; |
4aac40c8 | 3474 | } |
9291a0cd | 3475 | |
c011a4f4 DE |
3476 | /* Before we invoke realpath, which can get expensive when many |
3477 | files are involved, do a quick comparison of the basenames. */ | |
3478 | if (! basenames_may_differ | |
3479 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3480 | continue; | |
3481 | ||
da235a7c JK |
3482 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3483 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3484 | { |
da235a7c JK |
3485 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3486 | callback, data)) | |
3487 | return 1; | |
288e77a7 | 3488 | continue; |
da235a7c | 3489 | } |
9291a0cd | 3490 | |
da235a7c JK |
3491 | if (real_path != NULL) |
3492 | { | |
af529f8f JK |
3493 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3494 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3495 | if (this_real_name != NULL |
af529f8f | 3496 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3497 | { |
f5b95b50 | 3498 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3499 | callback, data)) |
3500 | return 1; | |
288e77a7 | 3501 | continue; |
9291a0cd TT |
3502 | } |
3503 | } | |
3504 | } | |
3505 | } | |
3506 | ||
9291a0cd TT |
3507 | return 0; |
3508 | } | |
3509 | ||
da51c347 DE |
3510 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3511 | ||
3512 | struct dw2_symtab_iterator | |
9291a0cd | 3513 | { |
da51c347 DE |
3514 | /* The internalized form of .gdb_index. */ |
3515 | struct mapped_index *index; | |
3516 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3517 | int want_specific_block; | |
3518 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3519 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3520 | int block_index; | |
3521 | /* The kind of symbol we're looking for. */ | |
3522 | domain_enum domain; | |
3523 | /* The list of CUs from the index entry of the symbol, | |
3524 | or NULL if not found. */ | |
3525 | offset_type *vec; | |
3526 | /* The next element in VEC to look at. */ | |
3527 | int next; | |
3528 | /* The number of elements in VEC, or zero if there is no match. */ | |
3529 | int length; | |
8943b874 DE |
3530 | /* Have we seen a global version of the symbol? |
3531 | If so we can ignore all further global instances. | |
3532 | This is to work around gold/15646, inefficient gold-generated | |
3533 | indices. */ | |
3534 | int global_seen; | |
da51c347 | 3535 | }; |
9291a0cd | 3536 | |
da51c347 DE |
3537 | /* Initialize the index symtab iterator ITER. |
3538 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3539 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3540 | |
9291a0cd | 3541 | static void |
da51c347 DE |
3542 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3543 | struct mapped_index *index, | |
3544 | int want_specific_block, | |
3545 | int block_index, | |
3546 | domain_enum domain, | |
3547 | const char *name) | |
3548 | { | |
3549 | iter->index = index; | |
3550 | iter->want_specific_block = want_specific_block; | |
3551 | iter->block_index = block_index; | |
3552 | iter->domain = domain; | |
3553 | iter->next = 0; | |
8943b874 | 3554 | iter->global_seen = 0; |
da51c347 DE |
3555 | |
3556 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3557 | iter->length = MAYBE_SWAP (*iter->vec); | |
3558 | else | |
3559 | { | |
3560 | iter->vec = NULL; | |
3561 | iter->length = 0; | |
3562 | } | |
3563 | } | |
3564 | ||
3565 | /* Return the next matching CU or NULL if there are no more. */ | |
3566 | ||
3567 | static struct dwarf2_per_cu_data * | |
3568 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3569 | { | |
3570 | for ( ; iter->next < iter->length; ++iter->next) | |
3571 | { | |
3572 | offset_type cu_index_and_attrs = | |
3573 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3574 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 3575 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
3576 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3577 | /* This value is only valid for index versions >= 7. */ | |
3578 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3579 | gdb_index_symbol_kind symbol_kind = | |
3580 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3581 | /* Only check the symbol attributes if they're present. | |
3582 | Indices prior to version 7 don't record them, | |
3583 | and indices >= 7 may elide them for certain symbols | |
3584 | (gold does this). */ | |
3585 | int attrs_valid = | |
3586 | (iter->index->version >= 7 | |
3587 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3588 | ||
3190f0c6 DE |
3589 | /* Don't crash on bad data. */ |
3590 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3591 | + dwarf2_per_objfile->n_type_units)) | |
3592 | { | |
3593 | complaint (&symfile_complaints, | |
3594 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3595 | " [in module %s]"), |
3596 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3597 | continue; |
3598 | } | |
3599 | ||
8832e7e3 | 3600 | per_cu = dw2_get_cutu (cu_index); |
3190f0c6 | 3601 | |
da51c347 | 3602 | /* Skip if already read in. */ |
43f3e411 | 3603 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3604 | continue; |
3605 | ||
8943b874 DE |
3606 | /* Check static vs global. */ |
3607 | if (attrs_valid) | |
3608 | { | |
3609 | if (iter->want_specific_block | |
3610 | && want_static != is_static) | |
3611 | continue; | |
3612 | /* Work around gold/15646. */ | |
3613 | if (!is_static && iter->global_seen) | |
3614 | continue; | |
3615 | if (!is_static) | |
3616 | iter->global_seen = 1; | |
3617 | } | |
da51c347 DE |
3618 | |
3619 | /* Only check the symbol's kind if it has one. */ | |
3620 | if (attrs_valid) | |
3621 | { | |
3622 | switch (iter->domain) | |
3623 | { | |
3624 | case VAR_DOMAIN: | |
3625 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3626 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3627 | /* Some types are also in VAR_DOMAIN. */ | |
3628 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3629 | continue; | |
3630 | break; | |
3631 | case STRUCT_DOMAIN: | |
3632 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3633 | continue; | |
3634 | break; | |
3635 | case LABEL_DOMAIN: | |
3636 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3637 | continue; | |
3638 | break; | |
3639 | default: | |
3640 | break; | |
3641 | } | |
3642 | } | |
3643 | ||
3644 | ++iter->next; | |
3645 | return per_cu; | |
3646 | } | |
3647 | ||
3648 | return NULL; | |
3649 | } | |
3650 | ||
43f3e411 | 3651 | static struct compunit_symtab * |
da51c347 DE |
3652 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
3653 | const char *name, domain_enum domain) | |
9291a0cd | 3654 | { |
43f3e411 | 3655 | struct compunit_symtab *stab_best = NULL; |
156942c7 DE |
3656 | struct mapped_index *index; |
3657 | ||
9291a0cd TT |
3658 | dw2_setup (objfile); |
3659 | ||
156942c7 DE |
3660 | index = dwarf2_per_objfile->index_table; |
3661 | ||
da51c347 | 3662 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3663 | if (index) |
9291a0cd | 3664 | { |
da51c347 DE |
3665 | struct dw2_symtab_iterator iter; |
3666 | struct dwarf2_per_cu_data *per_cu; | |
3667 | ||
3668 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3669 | |
da51c347 | 3670 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3671 | { |
b2e2f908 | 3672 | struct symbol *sym, *with_opaque = NULL; |
43f3e411 DE |
3673 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); |
3674 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
f194fefb | 3675 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3676 | |
b2e2f908 DE |
3677 | sym = block_find_symbol (block, name, domain, |
3678 | block_find_non_opaque_type_preferred, | |
3679 | &with_opaque); | |
3680 | ||
da51c347 DE |
3681 | /* Some caution must be observed with overloaded functions |
3682 | and methods, since the index will not contain any overload | |
3683 | information (but NAME might contain it). */ | |
da51c347 | 3684 | |
b2e2f908 DE |
3685 | if (sym != NULL |
3686 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
3687 | return stab; | |
3688 | if (with_opaque != NULL | |
3689 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
3690 | stab_best = stab; | |
da51c347 DE |
3691 | |
3692 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3693 | } |
3694 | } | |
9291a0cd | 3695 | |
da51c347 | 3696 | return stab_best; |
9291a0cd TT |
3697 | } |
3698 | ||
3699 | static void | |
3700 | dw2_print_stats (struct objfile *objfile) | |
3701 | { | |
e4a48d9d | 3702 | int i, total, count; |
9291a0cd TT |
3703 | |
3704 | dw2_setup (objfile); | |
e4a48d9d | 3705 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3706 | count = 0; |
e4a48d9d | 3707 | for (i = 0; i < total; ++i) |
9291a0cd | 3708 | { |
8832e7e3 | 3709 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3710 | |
43f3e411 | 3711 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3712 | ++count; |
3713 | } | |
e4a48d9d | 3714 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3715 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3716 | } | |
3717 | ||
779bd270 DE |
3718 | /* This dumps minimal information about the index. |
3719 | It is called via "mt print objfiles". | |
3720 | One use is to verify .gdb_index has been loaded by the | |
3721 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3722 | ||
9291a0cd TT |
3723 | static void |
3724 | dw2_dump (struct objfile *objfile) | |
3725 | { | |
779bd270 DE |
3726 | dw2_setup (objfile); |
3727 | gdb_assert (dwarf2_per_objfile->using_index); | |
3728 | printf_filtered (".gdb_index:"); | |
3729 | if (dwarf2_per_objfile->index_table != NULL) | |
3730 | { | |
3731 | printf_filtered (" version %d\n", | |
3732 | dwarf2_per_objfile->index_table->version); | |
3733 | } | |
3734 | else | |
3735 | printf_filtered (" faked for \"readnow\"\n"); | |
3736 | printf_filtered ("\n"); | |
9291a0cd TT |
3737 | } |
3738 | ||
3739 | static void | |
3189cb12 DE |
3740 | dw2_relocate (struct objfile *objfile, |
3741 | const struct section_offsets *new_offsets, | |
3742 | const struct section_offsets *delta) | |
9291a0cd TT |
3743 | { |
3744 | /* There's nothing to relocate here. */ | |
3745 | } | |
3746 | ||
3747 | static void | |
3748 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3749 | const char *func_name) | |
3750 | { | |
da51c347 DE |
3751 | struct mapped_index *index; |
3752 | ||
3753 | dw2_setup (objfile); | |
3754 | ||
3755 | index = dwarf2_per_objfile->index_table; | |
3756 | ||
3757 | /* index is NULL if OBJF_READNOW. */ | |
3758 | if (index) | |
3759 | { | |
3760 | struct dw2_symtab_iterator iter; | |
3761 | struct dwarf2_per_cu_data *per_cu; | |
3762 | ||
3763 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3764 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3765 | func_name); | |
3766 | ||
3767 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3768 | dw2_instantiate_symtab (per_cu); | |
3769 | } | |
9291a0cd TT |
3770 | } |
3771 | ||
3772 | static void | |
3773 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3774 | { | |
3775 | int i; | |
3776 | ||
3777 | dw2_setup (objfile); | |
1fd400ff TT |
3778 | |
3779 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3780 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3781 | { |
8832e7e3 | 3782 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3783 | |
a0f42c21 | 3784 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3785 | } |
3786 | } | |
3787 | ||
3788 | static void | |
652a8996 JK |
3789 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3790 | const char *fullname) | |
9291a0cd TT |
3791 | { |
3792 | int i; | |
3793 | ||
3794 | dw2_setup (objfile); | |
d4637a04 DE |
3795 | |
3796 | /* We don't need to consider type units here. | |
3797 | This is only called for examining code, e.g. expand_line_sal. | |
3798 | There can be an order of magnitude (or more) more type units | |
3799 | than comp units, and we avoid them if we can. */ | |
3800 | ||
3801 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3802 | { |
3803 | int j; | |
8832e7e3 | 3804 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
7b9f3c50 | 3805 | struct quick_file_names *file_data; |
9291a0cd | 3806 | |
3d7bb9d9 | 3807 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3808 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3809 | continue; |
3810 | ||
e4a48d9d | 3811 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3812 | if (file_data == NULL) |
9291a0cd TT |
3813 | continue; |
3814 | ||
7b9f3c50 | 3815 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3816 | { |
652a8996 JK |
3817 | const char *this_fullname = file_data->file_names[j]; |
3818 | ||
3819 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3820 | { |
a0f42c21 | 3821 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3822 | break; |
3823 | } | |
3824 | } | |
3825 | } | |
3826 | } | |
3827 | ||
9291a0cd | 3828 | static void |
ade7ed9e | 3829 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 3830 | const char * name, domain_enum domain, |
ade7ed9e | 3831 | int global, |
40658b94 PH |
3832 | int (*callback) (struct block *, |
3833 | struct symbol *, void *), | |
2edb89d3 JK |
3834 | void *data, symbol_compare_ftype *match, |
3835 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3836 | { |
40658b94 | 3837 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3838 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3839 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3840 | } |
3841 | ||
3842 | static void | |
f8eba3c6 TT |
3843 | dw2_expand_symtabs_matching |
3844 | (struct objfile *objfile, | |
206f2a57 DE |
3845 | expand_symtabs_file_matcher_ftype *file_matcher, |
3846 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, | |
276d885b | 3847 | expand_symtabs_exp_notify_ftype *expansion_notify, |
f8eba3c6 TT |
3848 | enum search_domain kind, |
3849 | void *data) | |
9291a0cd TT |
3850 | { |
3851 | int i; | |
3852 | offset_type iter; | |
4b5246aa | 3853 | struct mapped_index *index; |
9291a0cd TT |
3854 | |
3855 | dw2_setup (objfile); | |
ae2de4f8 DE |
3856 | |
3857 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3858 | if (!dwarf2_per_objfile->index_table) |
3859 | return; | |
4b5246aa | 3860 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3861 | |
7b08b9eb | 3862 | if (file_matcher != NULL) |
24c79950 TT |
3863 | { |
3864 | struct cleanup *cleanup; | |
3865 | htab_t visited_found, visited_not_found; | |
3866 | ||
3867 | visited_found = htab_create_alloc (10, | |
3868 | htab_hash_pointer, htab_eq_pointer, | |
3869 | NULL, xcalloc, xfree); | |
3870 | cleanup = make_cleanup_htab_delete (visited_found); | |
3871 | visited_not_found = htab_create_alloc (10, | |
3872 | htab_hash_pointer, htab_eq_pointer, | |
3873 | NULL, xcalloc, xfree); | |
3874 | make_cleanup_htab_delete (visited_not_found); | |
3875 | ||
848e3e78 DE |
3876 | /* The rule is CUs specify all the files, including those used by |
3877 | any TU, so there's no need to scan TUs here. */ | |
3878 | ||
3879 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3880 | { |
3881 | int j; | |
8832e7e3 | 3882 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
24c79950 TT |
3883 | struct quick_file_names *file_data; |
3884 | void **slot; | |
7b08b9eb | 3885 | |
61d96d7e DE |
3886 | QUIT; |
3887 | ||
24c79950 | 3888 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3889 | |
24c79950 | 3890 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3891 | if (per_cu->v.quick->compunit_symtab) |
24c79950 | 3892 | continue; |
7b08b9eb | 3893 | |
e4a48d9d | 3894 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3895 | if (file_data == NULL) |
3896 | continue; | |
7b08b9eb | 3897 | |
24c79950 TT |
3898 | if (htab_find (visited_not_found, file_data) != NULL) |
3899 | continue; | |
3900 | else if (htab_find (visited_found, file_data) != NULL) | |
3901 | { | |
3902 | per_cu->v.quick->mark = 1; | |
3903 | continue; | |
3904 | } | |
3905 | ||
3906 | for (j = 0; j < file_data->num_file_names; ++j) | |
3907 | { | |
da235a7c JK |
3908 | const char *this_real_name; |
3909 | ||
fbd9ab74 | 3910 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3911 | { |
3912 | per_cu->v.quick->mark = 1; | |
3913 | break; | |
3914 | } | |
da235a7c JK |
3915 | |
3916 | /* Before we invoke realpath, which can get expensive when many | |
3917 | files are involved, do a quick comparison of the basenames. */ | |
3918 | if (!basenames_may_differ | |
3919 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3920 | data, 1)) | |
3921 | continue; | |
3922 | ||
3923 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3924 | if (file_matcher (this_real_name, data, 0)) | |
3925 | { | |
3926 | per_cu->v.quick->mark = 1; | |
3927 | break; | |
3928 | } | |
24c79950 TT |
3929 | } |
3930 | ||
3931 | slot = htab_find_slot (per_cu->v.quick->mark | |
3932 | ? visited_found | |
3933 | : visited_not_found, | |
3934 | file_data, INSERT); | |
3935 | *slot = file_data; | |
3936 | } | |
3937 | ||
3938 | do_cleanups (cleanup); | |
3939 | } | |
9291a0cd | 3940 | |
3876f04e | 3941 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3942 | { |
3943 | offset_type idx = 2 * iter; | |
3944 | const char *name; | |
3945 | offset_type *vec, vec_len, vec_idx; | |
8943b874 | 3946 | int global_seen = 0; |
9291a0cd | 3947 | |
61d96d7e DE |
3948 | QUIT; |
3949 | ||
3876f04e | 3950 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3951 | continue; |
3952 | ||
3876f04e | 3953 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3954 | |
206f2a57 | 3955 | if (! (*symbol_matcher) (name, data)) |
9291a0cd TT |
3956 | continue; |
3957 | ||
3958 | /* The name was matched, now expand corresponding CUs that were | |
3959 | marked. */ | |
4b5246aa | 3960 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3961 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3962 | vec_len = MAYBE_SWAP (vec[0]); |
3963 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3964 | { | |
e254ef6a | 3965 | struct dwarf2_per_cu_data *per_cu; |
156942c7 | 3966 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
8943b874 DE |
3967 | /* This value is only valid for index versions >= 7. */ |
3968 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
156942c7 DE |
3969 | gdb_index_symbol_kind symbol_kind = |
3970 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3971 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 DE |
3972 | /* Only check the symbol attributes if they're present. |
3973 | Indices prior to version 7 don't record them, | |
3974 | and indices >= 7 may elide them for certain symbols | |
3975 | (gold does this). */ | |
3976 | int attrs_valid = | |
3977 | (index->version >= 7 | |
3978 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3979 | ||
8943b874 DE |
3980 | /* Work around gold/15646. */ |
3981 | if (attrs_valid) | |
3982 | { | |
3983 | if (!is_static && global_seen) | |
3984 | continue; | |
3985 | if (!is_static) | |
3986 | global_seen = 1; | |
3987 | } | |
3988 | ||
3190f0c6 DE |
3989 | /* Only check the symbol's kind if it has one. */ |
3990 | if (attrs_valid) | |
156942c7 DE |
3991 | { |
3992 | switch (kind) | |
3993 | { | |
3994 | case VARIABLES_DOMAIN: | |
3995 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3996 | continue; | |
3997 | break; | |
3998 | case FUNCTIONS_DOMAIN: | |
3999 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
4000 | continue; | |
4001 | break; | |
4002 | case TYPES_DOMAIN: | |
4003 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4004 | continue; | |
4005 | break; | |
4006 | default: | |
4007 | break; | |
4008 | } | |
4009 | } | |
4010 | ||
3190f0c6 DE |
4011 | /* Don't crash on bad data. */ |
4012 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
4013 | + dwarf2_per_objfile->n_type_units)) | |
4014 | { | |
4015 | complaint (&symfile_complaints, | |
4016 | _(".gdb_index entry has bad CU index" | |
4262abfb | 4017 | " [in module %s]"), objfile_name (objfile)); |
3190f0c6 DE |
4018 | continue; |
4019 | } | |
4020 | ||
8832e7e3 | 4021 | per_cu = dw2_get_cutu (cu_index); |
7b08b9eb | 4022 | if (file_matcher == NULL || per_cu->v.quick->mark) |
276d885b GB |
4023 | { |
4024 | int symtab_was_null = | |
4025 | (per_cu->v.quick->compunit_symtab == NULL); | |
4026 | ||
4027 | dw2_instantiate_symtab (per_cu); | |
4028 | ||
4029 | if (expansion_notify != NULL | |
4030 | && symtab_was_null | |
4031 | && per_cu->v.quick->compunit_symtab != NULL) | |
4032 | { | |
4033 | expansion_notify (per_cu->v.quick->compunit_symtab, | |
4034 | data); | |
4035 | } | |
4036 | } | |
9291a0cd TT |
4037 | } |
4038 | } | |
4039 | } | |
4040 | ||
43f3e411 | 4041 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific |
9703b513 TT |
4042 | symtab. */ |
4043 | ||
43f3e411 DE |
4044 | static struct compunit_symtab * |
4045 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4046 | CORE_ADDR pc) | |
9703b513 TT |
4047 | { |
4048 | int i; | |
4049 | ||
43f3e411 DE |
4050 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL |
4051 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4052 | return cust; | |
9703b513 | 4053 | |
43f3e411 | 4054 | if (cust->includes == NULL) |
a3ec0bb1 DE |
4055 | return NULL; |
4056 | ||
43f3e411 | 4057 | for (i = 0; cust->includes[i]; ++i) |
9703b513 | 4058 | { |
43f3e411 | 4059 | struct compunit_symtab *s = cust->includes[i]; |
9703b513 | 4060 | |
43f3e411 | 4061 | s = recursively_find_pc_sect_compunit_symtab (s, pc); |
9703b513 TT |
4062 | if (s != NULL) |
4063 | return s; | |
4064 | } | |
4065 | ||
4066 | return NULL; | |
4067 | } | |
4068 | ||
43f3e411 DE |
4069 | static struct compunit_symtab * |
4070 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4071 | struct bound_minimal_symbol msymbol, | |
4072 | CORE_ADDR pc, | |
4073 | struct obj_section *section, | |
4074 | int warn_if_readin) | |
9291a0cd TT |
4075 | { |
4076 | struct dwarf2_per_cu_data *data; | |
43f3e411 | 4077 | struct compunit_symtab *result; |
9291a0cd TT |
4078 | |
4079 | dw2_setup (objfile); | |
4080 | ||
4081 | if (!objfile->psymtabs_addrmap) | |
4082 | return NULL; | |
4083 | ||
4084 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
4085 | if (!data) | |
4086 | return NULL; | |
4087 | ||
43f3e411 | 4088 | if (warn_if_readin && data->v.quick->compunit_symtab) |
abebb8b0 | 4089 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
4090 | paddress (get_objfile_arch (objfile), pc)); |
4091 | ||
43f3e411 DE |
4092 | result |
4093 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
4094 | pc); | |
9703b513 TT |
4095 | gdb_assert (result != NULL); |
4096 | return result; | |
9291a0cd TT |
4097 | } |
4098 | ||
9291a0cd | 4099 | static void |
44b13c5a | 4100 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 4101 | void *data, int need_fullname) |
9291a0cd TT |
4102 | { |
4103 | int i; | |
24c79950 TT |
4104 | struct cleanup *cleanup; |
4105 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
4106 | NULL, xcalloc, xfree); | |
9291a0cd | 4107 | |
24c79950 | 4108 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 4109 | dw2_setup (objfile); |
ae2de4f8 | 4110 | |
848e3e78 DE |
4111 | /* The rule is CUs specify all the files, including those used by |
4112 | any TU, so there's no need to scan TUs here. | |
4113 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 4114 | |
848e3e78 | 4115 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 | 4116 | { |
8832e7e3 | 4117 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
24c79950 | 4118 | |
43f3e411 | 4119 | if (per_cu->v.quick->compunit_symtab) |
24c79950 TT |
4120 | { |
4121 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
4122 | INSERT); | |
4123 | ||
4124 | *slot = per_cu->v.quick->file_names; | |
4125 | } | |
4126 | } | |
4127 | ||
848e3e78 | 4128 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4129 | { |
4130 | int j; | |
8832e7e3 | 4131 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 4132 | struct quick_file_names *file_data; |
24c79950 | 4133 | void **slot; |
9291a0cd | 4134 | |
3d7bb9d9 | 4135 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4136 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4137 | continue; |
4138 | ||
e4a48d9d | 4139 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4140 | if (file_data == NULL) |
9291a0cd TT |
4141 | continue; |
4142 | ||
24c79950 TT |
4143 | slot = htab_find_slot (visited, file_data, INSERT); |
4144 | if (*slot) | |
4145 | { | |
4146 | /* Already visited. */ | |
4147 | continue; | |
4148 | } | |
4149 | *slot = file_data; | |
4150 | ||
7b9f3c50 | 4151 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4152 | { |
74e2f255 DE |
4153 | const char *this_real_name; |
4154 | ||
4155 | if (need_fullname) | |
4156 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4157 | else | |
4158 | this_real_name = NULL; | |
7b9f3c50 | 4159 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
4160 | } |
4161 | } | |
24c79950 TT |
4162 | |
4163 | do_cleanups (cleanup); | |
9291a0cd TT |
4164 | } |
4165 | ||
4166 | static int | |
4167 | dw2_has_symbols (struct objfile *objfile) | |
4168 | { | |
4169 | return 1; | |
4170 | } | |
4171 | ||
4172 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4173 | { | |
4174 | dw2_has_symbols, | |
4175 | dw2_find_last_source_symtab, | |
4176 | dw2_forget_cached_source_info, | |
f8eba3c6 | 4177 | dw2_map_symtabs_matching_filename, |
9291a0cd | 4178 | dw2_lookup_symbol, |
9291a0cd TT |
4179 | dw2_print_stats, |
4180 | dw2_dump, | |
4181 | dw2_relocate, | |
4182 | dw2_expand_symtabs_for_function, | |
4183 | dw2_expand_all_symtabs, | |
652a8996 | 4184 | dw2_expand_symtabs_with_fullname, |
40658b94 | 4185 | dw2_map_matching_symbols, |
9291a0cd | 4186 | dw2_expand_symtabs_matching, |
43f3e411 | 4187 | dw2_find_pc_sect_compunit_symtab, |
9291a0cd TT |
4188 | dw2_map_symbol_filenames |
4189 | }; | |
4190 | ||
4191 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
4192 | file will use psymtabs, or 1 if using the GNU index. */ | |
4193 | ||
4194 | int | |
4195 | dwarf2_initialize_objfile (struct objfile *objfile) | |
4196 | { | |
4197 | /* If we're about to read full symbols, don't bother with the | |
4198 | indices. In this case we also don't care if some other debug | |
4199 | format is making psymtabs, because they are all about to be | |
4200 | expanded anyway. */ | |
4201 | if ((objfile->flags & OBJF_READNOW)) | |
4202 | { | |
4203 | int i; | |
4204 | ||
4205 | dwarf2_per_objfile->using_index = 1; | |
4206 | create_all_comp_units (objfile); | |
0e50663e | 4207 | create_all_type_units (objfile); |
7b9f3c50 DE |
4208 | dwarf2_per_objfile->quick_file_names_table = |
4209 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 4210 | |
1fd400ff | 4211 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 4212 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4213 | { |
8832e7e3 | 4214 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 4215 | |
e254ef6a DE |
4216 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
4217 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
4218 | } |
4219 | ||
4220 | /* Return 1 so that gdb sees the "quick" functions. However, | |
4221 | these functions will be no-ops because we will have expanded | |
4222 | all symtabs. */ | |
4223 | return 1; | |
4224 | } | |
4225 | ||
4226 | if (dwarf2_read_index (objfile)) | |
4227 | return 1; | |
4228 | ||
9291a0cd TT |
4229 | return 0; |
4230 | } | |
4231 | ||
4232 | \f | |
4233 | ||
dce234bc PP |
4234 | /* Build a partial symbol table. */ |
4235 | ||
4236 | void | |
f29dff0a | 4237 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 4238 | { |
c9bf0622 | 4239 | |
f29dff0a | 4240 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
4241 | { |
4242 | init_psymbol_list (objfile, 1024); | |
4243 | } | |
4244 | ||
492d29ea | 4245 | TRY |
c9bf0622 TT |
4246 | { |
4247 | /* This isn't really ideal: all the data we allocate on the | |
4248 | objfile's obstack is still uselessly kept around. However, | |
4249 | freeing it seems unsafe. */ | |
4250 | struct cleanup *cleanups = make_cleanup_discard_psymtabs (objfile); | |
4251 | ||
4252 | dwarf2_build_psymtabs_hard (objfile); | |
4253 | discard_cleanups (cleanups); | |
4254 | } | |
492d29ea PA |
4255 | CATCH (except, RETURN_MASK_ERROR) |
4256 | { | |
4257 | exception_print (gdb_stderr, except); | |
4258 | } | |
4259 | END_CATCH | |
c906108c | 4260 | } |
c906108c | 4261 | |
1ce1cefd DE |
4262 | /* Return the total length of the CU described by HEADER. */ |
4263 | ||
4264 | static unsigned int | |
4265 | get_cu_length (const struct comp_unit_head *header) | |
4266 | { | |
4267 | return header->initial_length_size + header->length; | |
4268 | } | |
4269 | ||
45452591 DE |
4270 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
4271 | ||
4272 | static inline int | |
b64f50a1 | 4273 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 4274 | { |
b64f50a1 | 4275 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 4276 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 4277 | |
b64f50a1 | 4278 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
4279 | } |
4280 | ||
3b80fe9b DE |
4281 | /* Find the base address of the compilation unit for range lists and |
4282 | location lists. It will normally be specified by DW_AT_low_pc. | |
4283 | In DWARF-3 draft 4, the base address could be overridden by | |
4284 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
4285 | compilation units with discontinuous ranges. */ | |
4286 | ||
4287 | static void | |
4288 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
4289 | { | |
4290 | struct attribute *attr; | |
4291 | ||
4292 | cu->base_known = 0; | |
4293 | cu->base_address = 0; | |
4294 | ||
4295 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
4296 | if (attr) | |
4297 | { | |
31aa7e4e | 4298 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4299 | cu->base_known = 1; |
4300 | } | |
4301 | else | |
4302 | { | |
4303 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4304 | if (attr) | |
4305 | { | |
31aa7e4e | 4306 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4307 | cu->base_known = 1; |
4308 | } | |
4309 | } | |
4310 | } | |
4311 | ||
93311388 DE |
4312 | /* Read in the comp unit header information from the debug_info at info_ptr. |
4313 | NOTE: This leaves members offset, first_die_offset to be filled in | |
4314 | by the caller. */ | |
107d2387 | 4315 | |
d521ce57 | 4316 | static const gdb_byte * |
107d2387 | 4317 | read_comp_unit_head (struct comp_unit_head *cu_header, |
d521ce57 | 4318 | const gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
4319 | { |
4320 | int signed_addr; | |
891d2f0b | 4321 | unsigned int bytes_read; |
c764a876 DE |
4322 | |
4323 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
4324 | cu_header->initial_length_size = bytes_read; | |
4325 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 4326 | info_ptr += bytes_read; |
107d2387 AC |
4327 | cu_header->version = read_2_bytes (abfd, info_ptr); |
4328 | info_ptr += 2; | |
b64f50a1 JK |
4329 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
4330 | &bytes_read); | |
613e1657 | 4331 | info_ptr += bytes_read; |
107d2387 AC |
4332 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
4333 | info_ptr += 1; | |
4334 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
4335 | if (signed_addr < 0) | |
8e65ff28 | 4336 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4337 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 4338 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 4339 | |
107d2387 AC |
4340 | return info_ptr; |
4341 | } | |
4342 | ||
36586728 TT |
4343 | /* Helper function that returns the proper abbrev section for |
4344 | THIS_CU. */ | |
4345 | ||
4346 | static struct dwarf2_section_info * | |
4347 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
4348 | { | |
4349 | struct dwarf2_section_info *abbrev; | |
4350 | ||
4351 | if (this_cu->is_dwz) | |
4352 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
4353 | else | |
4354 | abbrev = &dwarf2_per_objfile->abbrev; | |
4355 | ||
4356 | return abbrev; | |
4357 | } | |
4358 | ||
9ff913ba DE |
4359 | /* Subroutine of read_and_check_comp_unit_head and |
4360 | read_and_check_type_unit_head to simplify them. | |
4361 | Perform various error checking on the header. */ | |
4362 | ||
4363 | static void | |
4364 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
4365 | struct dwarf2_section_info *section, |
4366 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 4367 | { |
a32a8923 DE |
4368 | bfd *abfd = get_section_bfd_owner (section); |
4369 | const char *filename = get_section_file_name (section); | |
9ff913ba DE |
4370 | |
4371 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
4372 | error (_("Dwarf Error: wrong version in compilation unit header " | |
4373 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
4374 | filename); | |
4375 | ||
b64f50a1 | 4376 | if (header->abbrev_offset.sect_off |
36586728 | 4377 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
4378 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
4379 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 4380 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
4381 | filename); |
4382 | ||
4383 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
4384 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4385 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4386 | > section->size) |
4387 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4388 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4389 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4390 | filename); |
4391 | } | |
4392 | ||
4393 | /* Read in a CU/TU header and perform some basic error checking. | |
4394 | The contents of the header are stored in HEADER. | |
4395 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4396 | |
d521ce57 | 4397 | static const gdb_byte * |
9ff913ba DE |
4398 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4399 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4400 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4401 | const gdb_byte *info_ptr, |
9ff913ba | 4402 | int is_debug_types_section) |
72bf9492 | 4403 | { |
d521ce57 | 4404 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4405 | bfd *abfd = get_section_bfd_owner (section); |
72bf9492 | 4406 | |
b64f50a1 | 4407 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4408 | |
72bf9492 DJ |
4409 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
4410 | ||
460c1c54 CC |
4411 | /* If we're reading a type unit, skip over the signature and |
4412 | type_offset fields. */ | |
b0df02fd | 4413 | if (is_debug_types_section) |
460c1c54 CC |
4414 | info_ptr += 8 /*signature*/ + header->offset_size; |
4415 | ||
b64f50a1 | 4416 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 4417 | |
4bdcc0c1 | 4418 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
4419 | |
4420 | return info_ptr; | |
4421 | } | |
4422 | ||
348e048f DE |
4423 | /* Read in the types comp unit header information from .debug_types entry at |
4424 | types_ptr. The result is a pointer to one past the end of the header. */ | |
4425 | ||
d521ce57 | 4426 | static const gdb_byte * |
9ff913ba DE |
4427 | read_and_check_type_unit_head (struct comp_unit_head *header, |
4428 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4429 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4430 | const gdb_byte *info_ptr, |
dee91e82 DE |
4431 | ULONGEST *signature, |
4432 | cu_offset *type_offset_in_tu) | |
348e048f | 4433 | { |
d521ce57 | 4434 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4435 | bfd *abfd = get_section_bfd_owner (section); |
348e048f | 4436 | |
b64f50a1 | 4437 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 4438 | |
9ff913ba | 4439 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 4440 | |
9ff913ba DE |
4441 | /* If we're reading a type unit, skip over the signature and |
4442 | type_offset fields. */ | |
4443 | if (signature != NULL) | |
4444 | *signature = read_8_bytes (abfd, info_ptr); | |
4445 | info_ptr += 8; | |
dee91e82 DE |
4446 | if (type_offset_in_tu != NULL) |
4447 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
4448 | header->offset_size); | |
9ff913ba DE |
4449 | info_ptr += header->offset_size; |
4450 | ||
b64f50a1 | 4451 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4452 | |
4bdcc0c1 | 4453 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4454 | |
4455 | return info_ptr; | |
348e048f DE |
4456 | } |
4457 | ||
f4dc4d17 DE |
4458 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4459 | ||
4460 | static sect_offset | |
4461 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4462 | sect_offset offset) | |
4463 | { | |
a32a8923 | 4464 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 4465 | const gdb_byte *info_ptr; |
f4dc4d17 DE |
4466 | unsigned int length, initial_length_size, offset_size; |
4467 | sect_offset abbrev_offset; | |
4468 | ||
4469 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4470 | info_ptr = section->buffer + offset.sect_off; | |
4471 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
4472 | offset_size = initial_length_size == 4 ? 4 : 8; | |
4473 | info_ptr += initial_length_size + 2 /*version*/; | |
4474 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
4475 | return abbrev_offset; | |
4476 | } | |
4477 | ||
aaa75496 JB |
4478 | /* Allocate a new partial symtab for file named NAME and mark this new |
4479 | partial symtab as being an include of PST. */ | |
4480 | ||
4481 | static void | |
d521ce57 | 4482 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
4483 | struct objfile *objfile) |
4484 | { | |
4485 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4486 | ||
fbd9ab74 JK |
4487 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4488 | { | |
4489 | /* It shares objfile->objfile_obstack. */ | |
4490 | subpst->dirname = pst->dirname; | |
4491 | } | |
4492 | ||
aaa75496 JB |
4493 | subpst->textlow = 0; |
4494 | subpst->texthigh = 0; | |
4495 | ||
4496 | subpst->dependencies = (struct partial_symtab **) | |
4497 | obstack_alloc (&objfile->objfile_obstack, | |
4498 | sizeof (struct partial_symtab *)); | |
4499 | subpst->dependencies[0] = pst; | |
4500 | subpst->number_of_dependencies = 1; | |
4501 | ||
4502 | subpst->globals_offset = 0; | |
4503 | subpst->n_global_syms = 0; | |
4504 | subpst->statics_offset = 0; | |
4505 | subpst->n_static_syms = 0; | |
43f3e411 | 4506 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
4507 | subpst->read_symtab = pst->read_symtab; |
4508 | subpst->readin = 0; | |
4509 | ||
4510 | /* No private part is necessary for include psymtabs. This property | |
4511 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4512 | the regular ones. */ |
58a9656e | 4513 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4514 | } |
4515 | ||
4516 | /* Read the Line Number Program data and extract the list of files | |
4517 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4518 | partial symtab for each of these included files. */ |
aaa75496 JB |
4519 | |
4520 | static void | |
4521 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4522 | struct die_info *die, |
4523 | struct partial_symtab *pst) | |
aaa75496 | 4524 | { |
d85a05f0 DJ |
4525 | struct line_header *lh = NULL; |
4526 | struct attribute *attr; | |
aaa75496 | 4527 | |
d85a05f0 DJ |
4528 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4529 | if (attr) | |
3019eac3 | 4530 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4531 | if (lh == NULL) |
4532 | return; /* No linetable, so no includes. */ | |
4533 | ||
c6da4cef | 4534 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
527f3840 | 4535 | dwarf_decode_lines (lh, pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
4536 | |
4537 | free_line_header (lh); | |
4538 | } | |
4539 | ||
348e048f | 4540 | static hashval_t |
52dc124a | 4541 | hash_signatured_type (const void *item) |
348e048f | 4542 | { |
52dc124a | 4543 | const struct signatured_type *sig_type = item; |
9a619af0 | 4544 | |
348e048f | 4545 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4546 | return sig_type->signature; |
348e048f DE |
4547 | } |
4548 | ||
4549 | static int | |
52dc124a | 4550 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
4551 | { |
4552 | const struct signatured_type *lhs = item_lhs; | |
4553 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4554 | |
348e048f DE |
4555 | return lhs->signature == rhs->signature; |
4556 | } | |
4557 | ||
1fd400ff TT |
4558 | /* Allocate a hash table for signatured types. */ |
4559 | ||
4560 | static htab_t | |
673bfd45 | 4561 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4562 | { |
4563 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4564 | hash_signatured_type, |
4565 | eq_signatured_type, | |
1fd400ff TT |
4566 | NULL, |
4567 | &objfile->objfile_obstack, | |
4568 | hashtab_obstack_allocate, | |
4569 | dummy_obstack_deallocate); | |
4570 | } | |
4571 | ||
d467dd73 | 4572 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4573 | |
4574 | static int | |
d467dd73 | 4575 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4576 | { |
4577 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4578 | struct signatured_type ***datap = datum; |
1fd400ff | 4579 | |
b4dd5633 | 4580 | **datap = sigt; |
1fd400ff TT |
4581 | ++*datap; |
4582 | ||
4583 | return 1; | |
4584 | } | |
4585 | ||
c88ee1f0 DE |
4586 | /* Create the hash table of all entries in the .debug_types |
4587 | (or .debug_types.dwo) section(s). | |
4588 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4589 | otherwise it is NULL. | |
4590 | ||
4591 | The result is a pointer to the hash table or NULL if there are no types. | |
4592 | ||
4593 | Note: This function processes DWO files only, not DWP files. */ | |
348e048f | 4594 | |
3019eac3 DE |
4595 | static htab_t |
4596 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4597 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4598 | { |
3019eac3 | 4599 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4600 | htab_t types_htab = NULL; |
8b70b953 TT |
4601 | int ix; |
4602 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4603 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4604 | |
3019eac3 DE |
4605 | if (VEC_empty (dwarf2_section_info_def, types)) |
4606 | return NULL; | |
348e048f | 4607 | |
4bdcc0c1 DE |
4608 | abbrev_section = (dwo_file != NULL |
4609 | ? &dwo_file->sections.abbrev | |
4610 | : &dwarf2_per_objfile->abbrev); | |
4611 | ||
b4f54984 | 4612 | if (dwarf_read_debug) |
09406207 DE |
4613 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", |
4614 | dwo_file ? ".dwo" : "", | |
a32a8923 | 4615 | get_section_file_name (abbrev_section)); |
09406207 | 4616 | |
8b70b953 | 4617 | for (ix = 0; |
3019eac3 | 4618 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4619 | ++ix) |
4620 | { | |
3019eac3 | 4621 | bfd *abfd; |
d521ce57 | 4622 | const gdb_byte *info_ptr, *end_ptr; |
348e048f | 4623 | |
8b70b953 TT |
4624 | dwarf2_read_section (objfile, section); |
4625 | info_ptr = section->buffer; | |
348e048f | 4626 | |
8b70b953 TT |
4627 | if (info_ptr == NULL) |
4628 | continue; | |
348e048f | 4629 | |
3019eac3 | 4630 | /* We can't set abfd until now because the section may be empty or |
a32a8923 DE |
4631 | not present, in which case the bfd is unknown. */ |
4632 | abfd = get_section_bfd_owner (section); | |
3019eac3 | 4633 | |
dee91e82 DE |
4634 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4635 | because we don't need to read any dies: the signature is in the | |
4636 | header. */ | |
8b70b953 TT |
4637 | |
4638 | end_ptr = info_ptr + section->size; | |
4639 | while (info_ptr < end_ptr) | |
4640 | { | |
b64f50a1 | 4641 | sect_offset offset; |
3019eac3 | 4642 | cu_offset type_offset_in_tu; |
8b70b953 | 4643 | ULONGEST signature; |
52dc124a | 4644 | struct signatured_type *sig_type; |
3019eac3 | 4645 | struct dwo_unit *dwo_tu; |
8b70b953 | 4646 | void **slot; |
d521ce57 | 4647 | const gdb_byte *ptr = info_ptr; |
9ff913ba | 4648 | struct comp_unit_head header; |
dee91e82 | 4649 | unsigned int length; |
348e048f | 4650 | |
b64f50a1 | 4651 | offset.sect_off = ptr - section->buffer; |
348e048f | 4652 | |
8b70b953 | 4653 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4654 | table, but we don't need anything else just yet. */ |
348e048f | 4655 | |
4bdcc0c1 DE |
4656 | ptr = read_and_check_type_unit_head (&header, section, |
4657 | abbrev_section, ptr, | |
3019eac3 | 4658 | &signature, &type_offset_in_tu); |
6caca83c | 4659 | |
1ce1cefd | 4660 | length = get_cu_length (&header); |
dee91e82 | 4661 | |
6caca83c | 4662 | /* Skip dummy type units. */ |
dee91e82 DE |
4663 | if (ptr >= info_ptr + length |
4664 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4665 | { |
1ce1cefd | 4666 | info_ptr += length; |
6caca83c CC |
4667 | continue; |
4668 | } | |
8b70b953 | 4669 | |
0349ea22 DE |
4670 | if (types_htab == NULL) |
4671 | { | |
4672 | if (dwo_file) | |
4673 | types_htab = allocate_dwo_unit_table (objfile); | |
4674 | else | |
4675 | types_htab = allocate_signatured_type_table (objfile); | |
4676 | } | |
4677 | ||
3019eac3 DE |
4678 | if (dwo_file) |
4679 | { | |
4680 | sig_type = NULL; | |
4681 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4682 | struct dwo_unit); | |
4683 | dwo_tu->dwo_file = dwo_file; | |
4684 | dwo_tu->signature = signature; | |
4685 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
8a0459fd | 4686 | dwo_tu->section = section; |
3019eac3 DE |
4687 | dwo_tu->offset = offset; |
4688 | dwo_tu->length = length; | |
4689 | } | |
4690 | else | |
4691 | { | |
4692 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4693 | The real type_offset is in the DWO file. */ | |
4694 | dwo_tu = NULL; | |
4695 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4696 | struct signatured_type); | |
4697 | sig_type->signature = signature; | |
4698 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4699 | sig_type->per_cu.objfile = objfile; | |
4700 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 4701 | sig_type->per_cu.section = section; |
3019eac3 DE |
4702 | sig_type->per_cu.offset = offset; |
4703 | sig_type->per_cu.length = length; | |
4704 | } | |
8b70b953 | 4705 | |
3019eac3 DE |
4706 | slot = htab_find_slot (types_htab, |
4707 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4708 | INSERT); | |
8b70b953 TT |
4709 | gdb_assert (slot != NULL); |
4710 | if (*slot != NULL) | |
4711 | { | |
3019eac3 DE |
4712 | sect_offset dup_offset; |
4713 | ||
4714 | if (dwo_file) | |
4715 | { | |
4716 | const struct dwo_unit *dup_tu = *slot; | |
4717 | ||
4718 | dup_offset = dup_tu->offset; | |
4719 | } | |
4720 | else | |
4721 | { | |
4722 | const struct signatured_type *dup_tu = *slot; | |
4723 | ||
4724 | dup_offset = dup_tu->per_cu.offset; | |
4725 | } | |
b3c8eb43 | 4726 | |
8b70b953 | 4727 | complaint (&symfile_complaints, |
c88ee1f0 | 4728 | _("debug type entry at offset 0x%x is duplicate to" |
4031ecc5 | 4729 | " the entry at offset 0x%x, signature %s"), |
3019eac3 | 4730 | offset.sect_off, dup_offset.sect_off, |
4031ecc5 | 4731 | hex_string (signature)); |
8b70b953 | 4732 | } |
3019eac3 | 4733 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4734 | |
b4f54984 | 4735 | if (dwarf_read_debug > 1) |
4031ecc5 | 4736 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", |
b64f50a1 | 4737 | offset.sect_off, |
4031ecc5 | 4738 | hex_string (signature)); |
348e048f | 4739 | |
dee91e82 | 4740 | info_ptr += length; |
8b70b953 | 4741 | } |
348e048f DE |
4742 | } |
4743 | ||
3019eac3 DE |
4744 | return types_htab; |
4745 | } | |
4746 | ||
4747 | /* Create the hash table of all entries in the .debug_types section, | |
4748 | and initialize all_type_units. | |
4749 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4750 | otherwise non-zero. */ | |
4751 | ||
4752 | static int | |
4753 | create_all_type_units (struct objfile *objfile) | |
4754 | { | |
4755 | htab_t types_htab; | |
b4dd5633 | 4756 | struct signatured_type **iter; |
3019eac3 DE |
4757 | |
4758 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4759 | if (types_htab == NULL) | |
4760 | { | |
4761 | dwarf2_per_objfile->signatured_types = NULL; | |
4762 | return 0; | |
4763 | } | |
4764 | ||
348e048f DE |
4765 | dwarf2_per_objfile->signatured_types = types_htab; |
4766 | ||
6aa5f3a6 DE |
4767 | dwarf2_per_objfile->n_type_units |
4768 | = dwarf2_per_objfile->n_allocated_type_units | |
4769 | = htab_elements (types_htab); | |
d467dd73 | 4770 | dwarf2_per_objfile->all_type_units |
a2ce51a0 DE |
4771 | = xmalloc (dwarf2_per_objfile->n_type_units |
4772 | * sizeof (struct signatured_type *)); | |
d467dd73 DE |
4773 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4774 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4775 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4776 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4777 | |
348e048f DE |
4778 | return 1; |
4779 | } | |
4780 | ||
6aa5f3a6 DE |
4781 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
4782 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
4783 | Otherwise we find one. */ | |
4784 | ||
4785 | static struct signatured_type * | |
4786 | add_type_unit (ULONGEST sig, void **slot) | |
4787 | { | |
4788 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4789 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
4790 | struct signatured_type *sig_type; | |
4791 | ||
4792 | gdb_assert (n_type_units <= dwarf2_per_objfile->n_allocated_type_units); | |
4793 | ++n_type_units; | |
4794 | if (n_type_units > dwarf2_per_objfile->n_allocated_type_units) | |
4795 | { | |
4796 | if (dwarf2_per_objfile->n_allocated_type_units == 0) | |
4797 | dwarf2_per_objfile->n_allocated_type_units = 1; | |
4798 | dwarf2_per_objfile->n_allocated_type_units *= 2; | |
4799 | dwarf2_per_objfile->all_type_units | |
4800 | = xrealloc (dwarf2_per_objfile->all_type_units, | |
4801 | dwarf2_per_objfile->n_allocated_type_units | |
4802 | * sizeof (struct signatured_type *)); | |
4803 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
4804 | } | |
4805 | dwarf2_per_objfile->n_type_units = n_type_units; | |
4806 | ||
4807 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4808 | struct signatured_type); | |
4809 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
4810 | sig_type->signature = sig; | |
4811 | sig_type->per_cu.is_debug_types = 1; | |
4812 | if (dwarf2_per_objfile->using_index) | |
4813 | { | |
4814 | sig_type->per_cu.v.quick = | |
4815 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4816 | struct dwarf2_per_cu_quick_data); | |
4817 | } | |
4818 | ||
4819 | if (slot == NULL) | |
4820 | { | |
4821 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4822 | sig_type, INSERT); | |
4823 | } | |
4824 | gdb_assert (*slot == NULL); | |
4825 | *slot = sig_type; | |
4826 | /* The rest of sig_type must be filled in by the caller. */ | |
4827 | return sig_type; | |
4828 | } | |
4829 | ||
a2ce51a0 DE |
4830 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
4831 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
4832 | ||
4833 | static void | |
4834 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
4835 | struct signatured_type *sig_entry, | |
4836 | struct dwo_unit *dwo_entry) | |
4837 | { | |
7ee85ab1 | 4838 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
4839 | gdb_assert (! sig_entry->per_cu.queued); |
4840 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
4841 | if (dwarf2_per_objfile->using_index) |
4842 | { | |
4843 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 4844 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
4845 | } |
4846 | else | |
4847 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 DE |
4848 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
4849 | gdb_assert (sig_entry->type_offset_in_section.sect_off == 0); | |
4850 | gdb_assert (sig_entry->type_unit_group == NULL); | |
7ee85ab1 DE |
4851 | gdb_assert (sig_entry->dwo_unit == NULL); |
4852 | ||
4853 | sig_entry->per_cu.section = dwo_entry->section; | |
4854 | sig_entry->per_cu.offset = dwo_entry->offset; | |
4855 | sig_entry->per_cu.length = dwo_entry->length; | |
4856 | sig_entry->per_cu.reading_dwo_directly = 1; | |
4857 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
4858 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
4859 | sig_entry->dwo_unit = dwo_entry; | |
4860 | } | |
4861 | ||
4862 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
4863 | If we haven't read the TU yet, create the signatured_type data structure |
4864 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
4865 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
4866 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
4867 | containing that CU. Otherwise we could end up reading several other DWO | |
4868 | files (due to comdat folding) to process the transitive closure of all the | |
4869 | mentioned TUs, and that can be slow. The current DWO file will have every | |
4870 | type signature that it needs. | |
a2ce51a0 DE |
4871 | We only do this for .gdb_index because in the psymtab case we already have |
4872 | to read all the DWOs to build the type unit groups. */ | |
4873 | ||
4874 | static struct signatured_type * | |
4875 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4876 | { | |
4877 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4878 | struct dwo_file *dwo_file; | |
4879 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
4880 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 4881 | void **slot; |
a2ce51a0 DE |
4882 | |
4883 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4884 | ||
6aa5f3a6 DE |
4885 | /* If TU skeletons have been removed then we may not have read in any |
4886 | TUs yet. */ | |
4887 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4888 | { | |
4889 | dwarf2_per_objfile->signatured_types | |
4890 | = allocate_signatured_type_table (objfile); | |
4891 | } | |
a2ce51a0 DE |
4892 | |
4893 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
4894 | Use the global signatured_types array to do our own comdat-folding |
4895 | of types. If this is the first time we're reading this TU, and | |
4896 | the TU has an entry in .gdb_index, replace the recorded data from | |
4897 | .gdb_index with this TU. */ | |
a2ce51a0 | 4898 | |
a2ce51a0 | 4899 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
4900 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
4901 | &find_sig_entry, INSERT); | |
4902 | sig_entry = *slot; | |
7ee85ab1 DE |
4903 | |
4904 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
4905 | read. Don't reassign the global entry to point to this DWO if that's |
4906 | the case. Also note that if the TU is already being read, it may not | |
4907 | have come from a DWO, the program may be a mix of Fission-compiled | |
4908 | code and non-Fission-compiled code. */ | |
4909 | ||
4910 | /* Have we already tried to read this TU? | |
4911 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
4912 | needn't exist in the global table yet). */ | |
4913 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
4914 | return sig_entry; |
4915 | ||
6aa5f3a6 DE |
4916 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
4917 | dwo_unit of the TU itself. */ | |
4918 | dwo_file = cu->dwo_unit->dwo_file; | |
4919 | ||
a2ce51a0 DE |
4920 | /* Ok, this is the first time we're reading this TU. */ |
4921 | if (dwo_file->tus == NULL) | |
4922 | return NULL; | |
4923 | find_dwo_entry.signature = sig; | |
4924 | dwo_entry = htab_find (dwo_file->tus, &find_dwo_entry); | |
4925 | if (dwo_entry == NULL) | |
4926 | return NULL; | |
4927 | ||
6aa5f3a6 DE |
4928 | /* If the global table doesn't have an entry for this TU, add one. */ |
4929 | if (sig_entry == NULL) | |
4930 | sig_entry = add_type_unit (sig, slot); | |
4931 | ||
a2ce51a0 | 4932 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
89e63ee4 | 4933 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
4934 | return sig_entry; |
4935 | } | |
4936 | ||
a2ce51a0 DE |
4937 | /* Subroutine of lookup_signatured_type. |
4938 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
4939 | then try the DWP file. If the TU stub (skeleton) has been removed then |
4940 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
4941 | |
4942 | static struct signatured_type * | |
4943 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4944 | { | |
4945 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4946 | struct dwp_file *dwp_file = get_dwp_file (); | |
4947 | struct dwo_unit *dwo_entry; | |
4948 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 4949 | void **slot; |
a2ce51a0 DE |
4950 | |
4951 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4952 | gdb_assert (dwp_file != NULL); | |
4953 | ||
6aa5f3a6 DE |
4954 | /* If TU skeletons have been removed then we may not have read in any |
4955 | TUs yet. */ | |
4956 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 4957 | { |
6aa5f3a6 DE |
4958 | dwarf2_per_objfile->signatured_types |
4959 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
4960 | } |
4961 | ||
6aa5f3a6 DE |
4962 | find_sig_entry.signature = sig; |
4963 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4964 | &find_sig_entry, INSERT); | |
4965 | sig_entry = *slot; | |
4966 | ||
4967 | /* Have we already tried to read this TU? | |
4968 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
4969 | needn't exist in the global table yet). */ | |
4970 | if (sig_entry != NULL) | |
4971 | return sig_entry; | |
4972 | ||
a2ce51a0 DE |
4973 | if (dwp_file->tus == NULL) |
4974 | return NULL; | |
57d63ce2 DE |
4975 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
4976 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
4977 | if (dwo_entry == NULL) |
4978 | return NULL; | |
4979 | ||
6aa5f3a6 | 4980 | sig_entry = add_type_unit (sig, slot); |
a2ce51a0 DE |
4981 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
4982 | ||
a2ce51a0 DE |
4983 | return sig_entry; |
4984 | } | |
4985 | ||
380bca97 | 4986 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
4987 | Returns NULL if signature SIG is not present in the table. |
4988 | It is up to the caller to complain about this. */ | |
348e048f DE |
4989 | |
4990 | static struct signatured_type * | |
a2ce51a0 | 4991 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 4992 | { |
a2ce51a0 DE |
4993 | if (cu->dwo_unit |
4994 | && dwarf2_per_objfile->using_index) | |
4995 | { | |
4996 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
4997 | These cases require special processing. */ | |
4998 | if (get_dwp_file () == NULL) | |
4999 | return lookup_dwo_signatured_type (cu, sig); | |
5000 | else | |
5001 | return lookup_dwp_signatured_type (cu, sig); | |
5002 | } | |
5003 | else | |
5004 | { | |
5005 | struct signatured_type find_entry, *entry; | |
348e048f | 5006 | |
a2ce51a0 DE |
5007 | if (dwarf2_per_objfile->signatured_types == NULL) |
5008 | return NULL; | |
5009 | find_entry.signature = sig; | |
5010 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
5011 | return entry; | |
5012 | } | |
348e048f | 5013 | } |
42e7ad6c DE |
5014 | \f |
5015 | /* Low level DIE reading support. */ | |
348e048f | 5016 | |
d85a05f0 DJ |
5017 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
5018 | ||
5019 | static void | |
5020 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 5021 | struct dwarf2_cu *cu, |
3019eac3 DE |
5022 | struct dwarf2_section_info *section, |
5023 | struct dwo_file *dwo_file) | |
d85a05f0 | 5024 | { |
fceca515 | 5025 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 5026 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 5027 | reader->cu = cu; |
3019eac3 | 5028 | reader->dwo_file = dwo_file; |
dee91e82 DE |
5029 | reader->die_section = section; |
5030 | reader->buffer = section->buffer; | |
f664829e | 5031 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 5032 | reader->comp_dir = NULL; |
d85a05f0 DJ |
5033 | } |
5034 | ||
b0c7bfa9 DE |
5035 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
5036 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
5037 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
5038 | already. | |
5039 | ||
5040 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
5041 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
5042 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
5043 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
5044 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
5045 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
5046 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
5047 | are filled in with the info of the DIE from the DWO file. | |
5048 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
5049 | provided an abbrev table to use. | |
5050 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
5051 | ||
5052 | static int | |
5053 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
5054 | struct dwo_unit *dwo_unit, | |
5055 | int abbrev_table_provided, | |
5056 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 5057 | const char *stub_comp_dir, |
b0c7bfa9 | 5058 | struct die_reader_specs *result_reader, |
d521ce57 | 5059 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
5060 | struct die_info **result_comp_unit_die, |
5061 | int *result_has_children) | |
5062 | { | |
5063 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5064 | struct dwarf2_cu *cu = this_cu->cu; | |
5065 | struct dwarf2_section_info *section; | |
5066 | bfd *abfd; | |
d521ce57 | 5067 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
5068 | ULONGEST signature; /* Or dwo_id. */ |
5069 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
5070 | int i,num_extra_attrs; | |
5071 | struct dwarf2_section_info *dwo_abbrev_section; | |
5072 | struct attribute *attr; | |
5073 | struct die_info *comp_unit_die; | |
5074 | ||
b0aeadb3 DE |
5075 | /* At most one of these may be provided. */ |
5076 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 5077 | |
b0c7bfa9 DE |
5078 | /* These attributes aren't processed until later: |
5079 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
5080 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
5081 | referenced later. However, these attributes are found in the stub | |
5082 | which we won't have later. In order to not impose this complication | |
5083 | on the rest of the code, we read them here and copy them to the | |
5084 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
5085 | |
5086 | stmt_list = NULL; | |
5087 | low_pc = NULL; | |
5088 | high_pc = NULL; | |
5089 | ranges = NULL; | |
5090 | comp_dir = NULL; | |
5091 | ||
5092 | if (stub_comp_unit_die != NULL) | |
5093 | { | |
5094 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
5095 | DWO file. */ | |
5096 | if (! this_cu->is_debug_types) | |
5097 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
5098 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
5099 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
5100 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
5101 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
5102 | ||
5103 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
5104 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
5105 | cu->addr_base = 0; | |
5106 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
5107 | if (attr) | |
5108 | cu->addr_base = DW_UNSND (attr); | |
5109 | ||
5110 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
5111 | We need the value before we can process DW_AT_ranges. */ | |
5112 | cu->ranges_base = 0; | |
5113 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
5114 | if (attr) | |
5115 | cu->ranges_base = DW_UNSND (attr); | |
5116 | } | |
a2ce51a0 DE |
5117 | else if (stub_comp_dir != NULL) |
5118 | { | |
5119 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
5120 | comp_dir = (struct attribute *) | |
5121 | obstack_alloc (&cu->comp_unit_obstack, sizeof (*comp_dir)); | |
5122 | comp_dir->name = DW_AT_comp_dir; | |
5123 | comp_dir->form = DW_FORM_string; | |
5124 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
5125 | DW_STRING (comp_dir) = stub_comp_dir; | |
5126 | } | |
b0c7bfa9 DE |
5127 | |
5128 | /* Set up for reading the DWO CU/TU. */ | |
5129 | cu->dwo_unit = dwo_unit; | |
5130 | section = dwo_unit->section; | |
5131 | dwarf2_read_section (objfile, section); | |
a32a8923 | 5132 | abfd = get_section_bfd_owner (section); |
b0c7bfa9 DE |
5133 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
5134 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; | |
5135 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
5136 | ||
5137 | if (this_cu->is_debug_types) | |
5138 | { | |
5139 | ULONGEST header_signature; | |
5140 | cu_offset type_offset_in_tu; | |
5141 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; | |
5142 | ||
5143 | info_ptr = read_and_check_type_unit_head (&cu->header, section, | |
5144 | dwo_abbrev_section, | |
5145 | info_ptr, | |
5146 | &header_signature, | |
5147 | &type_offset_in_tu); | |
a2ce51a0 DE |
5148 | /* This is not an assert because it can be caused by bad debug info. */ |
5149 | if (sig_type->signature != header_signature) | |
5150 | { | |
5151 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
5152 | " TU at offset 0x%x [in module %s]"), | |
5153 | hex_string (sig_type->signature), | |
5154 | hex_string (header_signature), | |
5155 | dwo_unit->offset.sect_off, | |
5156 | bfd_get_filename (abfd)); | |
5157 | } | |
b0c7bfa9 DE |
5158 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
5159 | /* For DWOs coming from DWP files, we don't know the CU length | |
5160 | nor the type's offset in the TU until now. */ | |
5161 | dwo_unit->length = get_cu_length (&cu->header); | |
5162 | dwo_unit->type_offset_in_tu = type_offset_in_tu; | |
5163 | ||
5164 | /* Establish the type offset that can be used to lookup the type. | |
5165 | For DWO files, we don't know it until now. */ | |
5166 | sig_type->type_offset_in_section.sect_off = | |
5167 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
5168 | } | |
5169 | else | |
5170 | { | |
5171 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
5172 | dwo_abbrev_section, | |
5173 | info_ptr, 0); | |
5174 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
5175 | /* For DWOs coming from DWP files, we don't know the CU length | |
5176 | until now. */ | |
5177 | dwo_unit->length = get_cu_length (&cu->header); | |
5178 | } | |
5179 | ||
02142a6c DE |
5180 | /* Replace the CU's original abbrev table with the DWO's. |
5181 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
5182 | if (abbrev_table_provided) |
5183 | { | |
5184 | /* Don't free the provided abbrev table, the caller of | |
5185 | init_cutu_and_read_dies owns it. */ | |
5186 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5187 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
5188 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5189 | } | |
5190 | else | |
5191 | { | |
5192 | dwarf2_free_abbrev_table (cu); | |
5193 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5194 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
5195 | } |
5196 | ||
5197 | /* Read in the die, but leave space to copy over the attributes | |
5198 | from the stub. This has the benefit of simplifying the rest of | |
5199 | the code - all the work to maintain the illusion of a single | |
5200 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
5201 | num_extra_attrs = ((stmt_list != NULL) | |
5202 | + (low_pc != NULL) | |
5203 | + (high_pc != NULL) | |
5204 | + (ranges != NULL) | |
5205 | + (comp_dir != NULL)); | |
5206 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
5207 | result_has_children, num_extra_attrs); | |
5208 | ||
5209 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
5210 | comp_unit_die = *result_comp_unit_die; | |
5211 | i = comp_unit_die->num_attrs; | |
5212 | if (stmt_list != NULL) | |
5213 | comp_unit_die->attrs[i++] = *stmt_list; | |
5214 | if (low_pc != NULL) | |
5215 | comp_unit_die->attrs[i++] = *low_pc; | |
5216 | if (high_pc != NULL) | |
5217 | comp_unit_die->attrs[i++] = *high_pc; | |
5218 | if (ranges != NULL) | |
5219 | comp_unit_die->attrs[i++] = *ranges; | |
5220 | if (comp_dir != NULL) | |
5221 | comp_unit_die->attrs[i++] = *comp_dir; | |
5222 | comp_unit_die->num_attrs += num_extra_attrs; | |
5223 | ||
b4f54984 | 5224 | if (dwarf_die_debug) |
bf6af496 DE |
5225 | { |
5226 | fprintf_unfiltered (gdb_stdlog, | |
5227 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 5228 | get_section_name (section), |
bf6af496 DE |
5229 | (unsigned) (begin_info_ptr - section->buffer), |
5230 | bfd_get_filename (abfd)); | |
b4f54984 | 5231 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
5232 | } |
5233 | ||
a2ce51a0 DE |
5234 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
5235 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
5236 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
5237 | to get it via circuitous means. Blech. */ | |
5238 | if (comp_dir != NULL) | |
5239 | result_reader->comp_dir = DW_STRING (comp_dir); | |
5240 | ||
b0c7bfa9 DE |
5241 | /* Skip dummy compilation units. */ |
5242 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
5243 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
5244 | return 0; | |
5245 | ||
5246 | *result_info_ptr = info_ptr; | |
5247 | return 1; | |
5248 | } | |
5249 | ||
5250 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
5251 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 5252 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
5253 | |
5254 | static struct dwo_unit * | |
5255 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
5256 | struct die_info *comp_unit_die) | |
5257 | { | |
5258 | struct dwarf2_cu *cu = this_cu->cu; | |
5259 | struct attribute *attr; | |
5260 | ULONGEST signature; | |
5261 | struct dwo_unit *dwo_unit; | |
5262 | const char *comp_dir, *dwo_name; | |
5263 | ||
a2ce51a0 DE |
5264 | gdb_assert (cu != NULL); |
5265 | ||
b0c7bfa9 DE |
5266 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
5267 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
5268 | gdb_assert (attr != NULL); | |
5269 | dwo_name = DW_STRING (attr); | |
5270 | comp_dir = NULL; | |
5271 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5272 | if (attr) | |
5273 | comp_dir = DW_STRING (attr); | |
5274 | ||
5275 | if (this_cu->is_debug_types) | |
5276 | { | |
5277 | struct signatured_type *sig_type; | |
5278 | ||
5279 | /* Since this_cu is the first member of struct signatured_type, | |
5280 | we can go from a pointer to one to a pointer to the other. */ | |
5281 | sig_type = (struct signatured_type *) this_cu; | |
5282 | signature = sig_type->signature; | |
5283 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
5284 | } | |
5285 | else | |
5286 | { | |
5287 | struct attribute *attr; | |
5288 | ||
5289 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
5290 | if (! attr) | |
5291 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
5292 | " [in module %s]"), | |
4262abfb | 5293 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
5294 | signature = DW_UNSND (attr); |
5295 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
5296 | signature); | |
5297 | } | |
5298 | ||
b0c7bfa9 DE |
5299 | return dwo_unit; |
5300 | } | |
5301 | ||
a2ce51a0 | 5302 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 DE |
5303 | See it for a description of the parameters. |
5304 | Read a TU directly from a DWO file, bypassing the stub. | |
5305 | ||
5306 | Note: This function could be a little bit simpler if we shared cleanups | |
5307 | with our caller, init_cutu_and_read_dies. That's generally a fragile thing | |
5308 | to do, so we keep this function self-contained. Or we could move this | |
5309 | into our caller, but it's complex enough already. */ | |
a2ce51a0 DE |
5310 | |
5311 | static void | |
6aa5f3a6 DE |
5312 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
5313 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
5314 | die_reader_func_ftype *die_reader_func, |
5315 | void *data) | |
5316 | { | |
5317 | struct dwarf2_cu *cu; | |
5318 | struct signatured_type *sig_type; | |
6aa5f3a6 | 5319 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
a2ce51a0 DE |
5320 | struct die_reader_specs reader; |
5321 | const gdb_byte *info_ptr; | |
5322 | struct die_info *comp_unit_die; | |
5323 | int has_children; | |
5324 | ||
5325 | /* Verify we can do the following downcast, and that we have the | |
5326 | data we need. */ | |
5327 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
5328 | sig_type = (struct signatured_type *) this_cu; | |
5329 | gdb_assert (sig_type->dwo_unit != NULL); | |
5330 | ||
5331 | cleanups = make_cleanup (null_cleanup, NULL); | |
5332 | ||
6aa5f3a6 DE |
5333 | if (use_existing_cu && this_cu->cu != NULL) |
5334 | { | |
5335 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
5336 | cu = this_cu->cu; | |
5337 | /* There's no need to do the rereading_dwo_cu handling that | |
5338 | init_cutu_and_read_dies does since we don't read the stub. */ | |
5339 | } | |
5340 | else | |
5341 | { | |
5342 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5343 | gdb_assert (this_cu->cu == NULL); | |
5344 | cu = xmalloc (sizeof (*cu)); | |
5345 | init_one_comp_unit (cu, this_cu); | |
5346 | /* If an error occurs while loading, release our storage. */ | |
5347 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
5348 | } | |
5349 | ||
5350 | /* A future optimization, if needed, would be to use an existing | |
5351 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
5352 | could share abbrev tables. */ | |
a2ce51a0 DE |
5353 | |
5354 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
5355 | 0 /* abbrev_table_provided */, | |
5356 | NULL /* stub_comp_unit_die */, | |
5357 | sig_type->dwo_unit->dwo_file->comp_dir, | |
5358 | &reader, &info_ptr, | |
5359 | &comp_unit_die, &has_children) == 0) | |
5360 | { | |
5361 | /* Dummy die. */ | |
5362 | do_cleanups (cleanups); | |
5363 | return; | |
5364 | } | |
5365 | ||
5366 | /* All the "real" work is done here. */ | |
5367 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5368 | ||
6aa5f3a6 | 5369 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
5370 | but the alternative is making the latter more complex. |
5371 | This function is only for the special case of using DWO files directly: | |
5372 | no point in overly complicating the general case just to handle this. */ | |
6aa5f3a6 | 5373 | if (free_cu_cleanup != NULL) |
a2ce51a0 | 5374 | { |
6aa5f3a6 DE |
5375 | if (keep) |
5376 | { | |
5377 | /* We've successfully allocated this compilation unit. Let our | |
5378 | caller clean it up when finished with it. */ | |
5379 | discard_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5380 | |
6aa5f3a6 DE |
5381 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5382 | So we have to manually free the abbrev table. */ | |
5383 | dwarf2_free_abbrev_table (cu); | |
a2ce51a0 | 5384 | |
6aa5f3a6 DE |
5385 | /* Link this CU into read_in_chain. */ |
5386 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5387 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5388 | } | |
5389 | else | |
5390 | do_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5391 | } |
a2ce51a0 DE |
5392 | |
5393 | do_cleanups (cleanups); | |
5394 | } | |
5395 | ||
fd820528 | 5396 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 5397 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 5398 | |
f4dc4d17 DE |
5399 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
5400 | Otherwise the table specified in the comp unit header is read in and used. | |
5401 | This is an optimization for when we already have the abbrev table. | |
5402 | ||
dee91e82 DE |
5403 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
5404 | Otherwise, a new CU is allocated with xmalloc. | |
5405 | ||
5406 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
5407 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
5408 | ||
5409 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 5410 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 5411 | |
70221824 | 5412 | static void |
fd820528 | 5413 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 5414 | struct abbrev_table *abbrev_table, |
fd820528 DE |
5415 | int use_existing_cu, int keep, |
5416 | die_reader_func_ftype *die_reader_func, | |
5417 | void *data) | |
c906108c | 5418 | { |
dee91e82 | 5419 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 5420 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5421 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5422 | struct dwarf2_cu *cu; |
d521ce57 | 5423 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 5424 | struct die_reader_specs reader; |
d85a05f0 | 5425 | struct die_info *comp_unit_die; |
dee91e82 | 5426 | int has_children; |
d85a05f0 | 5427 | struct attribute *attr; |
365156ad | 5428 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 5429 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 5430 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
5431 | /* Non-zero if CU currently points to a DWO file and we need to |
5432 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 5433 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 5434 | int rereading_dwo_cu = 0; |
c906108c | 5435 | |
b4f54984 | 5436 | if (dwarf_die_debug) |
09406207 DE |
5437 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
5438 | this_cu->is_debug_types ? "type" : "comp", | |
5439 | this_cu->offset.sect_off); | |
5440 | ||
dee91e82 DE |
5441 | if (use_existing_cu) |
5442 | gdb_assert (keep); | |
23745b47 | 5443 | |
a2ce51a0 DE |
5444 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
5445 | file (instead of going through the stub), short-circuit all of this. */ | |
5446 | if (this_cu->reading_dwo_directly) | |
5447 | { | |
5448 | /* Narrow down the scope of possibilities to have to understand. */ | |
5449 | gdb_assert (this_cu->is_debug_types); | |
5450 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
5451 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
5452 | die_reader_func, data); | |
a2ce51a0 DE |
5453 | return; |
5454 | } | |
5455 | ||
dee91e82 DE |
5456 | cleanups = make_cleanup (null_cleanup, NULL); |
5457 | ||
5458 | /* This is cheap if the section is already read in. */ | |
5459 | dwarf2_read_section (objfile, section); | |
5460 | ||
5461 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
5462 | |
5463 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
5464 | |
5465 | if (use_existing_cu && this_cu->cu != NULL) | |
5466 | { | |
5467 | cu = this_cu->cu; | |
42e7ad6c DE |
5468 | /* If this CU is from a DWO file we need to start over, we need to |
5469 | refetch the attributes from the skeleton CU. | |
5470 | This could be optimized by retrieving those attributes from when we | |
5471 | were here the first time: the previous comp_unit_die was stored in | |
5472 | comp_unit_obstack. But there's no data yet that we need this | |
5473 | optimization. */ | |
5474 | if (cu->dwo_unit != NULL) | |
5475 | rereading_dwo_cu = 1; | |
dee91e82 DE |
5476 | } |
5477 | else | |
5478 | { | |
5479 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5480 | gdb_assert (this_cu->cu == NULL); | |
dee91e82 DE |
5481 | cu = xmalloc (sizeof (*cu)); |
5482 | init_one_comp_unit (cu, this_cu); | |
dee91e82 | 5483 | /* If an error occurs while loading, release our storage. */ |
365156ad | 5484 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 5485 | } |
dee91e82 | 5486 | |
b0c7bfa9 | 5487 | /* Get the header. */ |
42e7ad6c DE |
5488 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
5489 | { | |
5490 | /* We already have the header, there's no need to read it in again. */ | |
5491 | info_ptr += cu->header.first_die_offset.cu_off; | |
5492 | } | |
5493 | else | |
5494 | { | |
3019eac3 | 5495 | if (this_cu->is_debug_types) |
dee91e82 DE |
5496 | { |
5497 | ULONGEST signature; | |
42e7ad6c | 5498 | cu_offset type_offset_in_tu; |
dee91e82 | 5499 | |
4bdcc0c1 DE |
5500 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
5501 | abbrev_section, info_ptr, | |
42e7ad6c DE |
5502 | &signature, |
5503 | &type_offset_in_tu); | |
dee91e82 | 5504 | |
42e7ad6c DE |
5505 | /* Since per_cu is the first member of struct signatured_type, |
5506 | we can go from a pointer to one to a pointer to the other. */ | |
5507 | sig_type = (struct signatured_type *) this_cu; | |
5508 | gdb_assert (sig_type->signature == signature); | |
5509 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
5510 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
5511 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
5512 | ||
42e7ad6c DE |
5513 | /* LENGTH has not been set yet for type units if we're |
5514 | using .gdb_index. */ | |
1ce1cefd | 5515 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
5516 | |
5517 | /* Establish the type offset that can be used to lookup the type. */ | |
5518 | sig_type->type_offset_in_section.sect_off = | |
5519 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
5520 | } |
5521 | else | |
5522 | { | |
4bdcc0c1 DE |
5523 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
5524 | abbrev_section, | |
5525 | info_ptr, 0); | |
dee91e82 DE |
5526 | |
5527 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 5528 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
5529 | } |
5530 | } | |
10b3939b | 5531 | |
6caca83c | 5532 | /* Skip dummy compilation units. */ |
dee91e82 | 5533 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
5534 | || peek_abbrev_code (abfd, info_ptr) == 0) |
5535 | { | |
dee91e82 | 5536 | do_cleanups (cleanups); |
21b2bd31 | 5537 | return; |
6caca83c CC |
5538 | } |
5539 | ||
433df2d4 DE |
5540 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
5541 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
5542 | done. Note that it's important that if the CU had an abbrev table |
5543 | on entry we don't free it when we're done: Somewhere up the call stack | |
5544 | it may be in use. */ | |
f4dc4d17 DE |
5545 | if (abbrev_table != NULL) |
5546 | { | |
5547 | gdb_assert (cu->abbrev_table == NULL); | |
5548 | gdb_assert (cu->header.abbrev_offset.sect_off | |
5549 | == abbrev_table->offset.sect_off); | |
5550 | cu->abbrev_table = abbrev_table; | |
5551 | } | |
5552 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 5553 | { |
4bdcc0c1 | 5554 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
5555 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5556 | } | |
42e7ad6c DE |
5557 | else if (rereading_dwo_cu) |
5558 | { | |
5559 | dwarf2_free_abbrev_table (cu); | |
5560 | dwarf2_read_abbrevs (cu, abbrev_section); | |
5561 | } | |
af703f96 | 5562 | |
dee91e82 | 5563 | /* Read the top level CU/TU die. */ |
3019eac3 | 5564 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 5565 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 5566 | |
b0c7bfa9 DE |
5567 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
5568 | from the DWO file. | |
5569 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
5570 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
5571 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5572 | if (attr) | |
5573 | { | |
3019eac3 | 5574 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 5575 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
5576 | |
5577 | if (has_children) | |
6a506a2d DE |
5578 | { |
5579 | complaint (&symfile_complaints, | |
5580 | _("compilation unit with DW_AT_GNU_dwo_name" | |
5581 | " has children (offset 0x%x) [in module %s]"), | |
5582 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
5583 | } | |
b0c7bfa9 | 5584 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 5585 | if (dwo_unit != NULL) |
3019eac3 | 5586 | { |
6a506a2d DE |
5587 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
5588 | abbrev_table != NULL, | |
a2ce51a0 | 5589 | comp_unit_die, NULL, |
6a506a2d DE |
5590 | &reader, &info_ptr, |
5591 | &dwo_comp_unit_die, &has_children) == 0) | |
5592 | { | |
5593 | /* Dummy die. */ | |
5594 | do_cleanups (cleanups); | |
5595 | return; | |
5596 | } | |
5597 | comp_unit_die = dwo_comp_unit_die; | |
5598 | } | |
5599 | else | |
5600 | { | |
5601 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
5602 | the stub. A complaint has already been logged. There's | |
5603 | not much more we can do except pass on the stub DIE to | |
5604 | die_reader_func. We don't want to throw an error on bad | |
5605 | debug info. */ | |
3019eac3 DE |
5606 | } |
5607 | } | |
5608 | ||
b0c7bfa9 | 5609 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
5610 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
5611 | ||
b0c7bfa9 | 5612 | /* Done, clean up. */ |
365156ad | 5613 | if (free_cu_cleanup != NULL) |
348e048f | 5614 | { |
365156ad TT |
5615 | if (keep) |
5616 | { | |
5617 | /* We've successfully allocated this compilation unit. Let our | |
5618 | caller clean it up when finished with it. */ | |
5619 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 5620 | |
365156ad TT |
5621 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5622 | So we have to manually free the abbrev table. */ | |
5623 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 5624 | |
365156ad TT |
5625 | /* Link this CU into read_in_chain. */ |
5626 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5627 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5628 | } | |
5629 | else | |
5630 | do_cleanups (free_cu_cleanup); | |
348e048f | 5631 | } |
365156ad TT |
5632 | |
5633 | do_cleanups (cleanups); | |
dee91e82 DE |
5634 | } |
5635 | ||
33e80786 DE |
5636 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
5637 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
5638 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
5639 | |
5640 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 5641 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
5642 | |
5643 | We fill in THIS_CU->length. | |
5644 | ||
5645 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
5646 | linker) then DIE_READER_FUNC will not get called. | |
5647 | ||
5648 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5649 | This is done in order to not leave THIS_CU->cu in a state where we have |
5650 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
5651 | |
5652 | static void | |
5653 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 5654 | struct dwo_file *dwo_file, |
dee91e82 DE |
5655 | die_reader_func_ftype *die_reader_func, |
5656 | void *data) | |
5657 | { | |
5658 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 5659 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5660 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 5661 | struct dwarf2_section_info *abbrev_section; |
dee91e82 | 5662 | struct dwarf2_cu cu; |
d521ce57 | 5663 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
5664 | struct die_reader_specs reader; |
5665 | struct cleanup *cleanups; | |
5666 | struct die_info *comp_unit_die; | |
5667 | int has_children; | |
5668 | ||
b4f54984 | 5669 | if (dwarf_die_debug) |
09406207 DE |
5670 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
5671 | this_cu->is_debug_types ? "type" : "comp", | |
5672 | this_cu->offset.sect_off); | |
5673 | ||
dee91e82 DE |
5674 | gdb_assert (this_cu->cu == NULL); |
5675 | ||
33e80786 DE |
5676 | abbrev_section = (dwo_file != NULL |
5677 | ? &dwo_file->sections.abbrev | |
5678 | : get_abbrev_section_for_cu (this_cu)); | |
5679 | ||
dee91e82 DE |
5680 | /* This is cheap if the section is already read in. */ |
5681 | dwarf2_read_section (objfile, section); | |
5682 | ||
5683 | init_one_comp_unit (&cu, this_cu); | |
5684 | ||
5685 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
5686 | ||
5687 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
5688 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
5689 | abbrev_section, info_ptr, | |
3019eac3 | 5690 | this_cu->is_debug_types); |
dee91e82 | 5691 | |
1ce1cefd | 5692 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
5693 | |
5694 | /* Skip dummy compilation units. */ | |
5695 | if (info_ptr >= begin_info_ptr + this_cu->length | |
5696 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 5697 | { |
dee91e82 | 5698 | do_cleanups (cleanups); |
21b2bd31 | 5699 | return; |
93311388 | 5700 | } |
72bf9492 | 5701 | |
dee91e82 DE |
5702 | dwarf2_read_abbrevs (&cu, abbrev_section); |
5703 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
5704 | ||
3019eac3 | 5705 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
5706 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
5707 | ||
5708 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5709 | ||
5710 | do_cleanups (cleanups); | |
5711 | } | |
5712 | ||
3019eac3 DE |
5713 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
5714 | does not lookup the specified DWO file. | |
5715 | This cannot be used to read DWO files. | |
dee91e82 DE |
5716 | |
5717 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5718 | This is done in order to not leave THIS_CU->cu in a state where we have |
5719 | to care whether it refers to the "main" CU or the DWO CU. | |
5720 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
5721 | |
5722 | static void | |
5723 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
5724 | die_reader_func_ftype *die_reader_func, | |
5725 | void *data) | |
5726 | { | |
33e80786 | 5727 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 5728 | } |
0018ea6f DE |
5729 | \f |
5730 | /* Type Unit Groups. | |
dee91e82 | 5731 | |
0018ea6f DE |
5732 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
5733 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
5734 | so that all types coming from the same compilation (.o file) are grouped | |
5735 | together. A future step could be to put the types in the same symtab as | |
5736 | the CU the types ultimately came from. */ | |
ff013f42 | 5737 | |
f4dc4d17 DE |
5738 | static hashval_t |
5739 | hash_type_unit_group (const void *item) | |
5740 | { | |
094b34ac | 5741 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 5742 | |
094b34ac | 5743 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5744 | } |
348e048f DE |
5745 | |
5746 | static int | |
f4dc4d17 | 5747 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5748 | { |
f4dc4d17 DE |
5749 | const struct type_unit_group *lhs = item_lhs; |
5750 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 5751 | |
094b34ac | 5752 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5753 | } |
348e048f | 5754 | |
f4dc4d17 DE |
5755 | /* Allocate a hash table for type unit groups. */ |
5756 | ||
5757 | static htab_t | |
5758 | allocate_type_unit_groups_table (void) | |
5759 | { | |
5760 | return htab_create_alloc_ex (3, | |
5761 | hash_type_unit_group, | |
5762 | eq_type_unit_group, | |
5763 | NULL, | |
5764 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5765 | hashtab_obstack_allocate, | |
5766 | dummy_obstack_deallocate); | |
5767 | } | |
dee91e82 | 5768 | |
f4dc4d17 DE |
5769 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5770 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5771 | of any one psymtab grow too big. */ | |
5772 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5773 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5774 | |
094b34ac | 5775 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5776 | Create the type_unit_group object used to hold one or more TUs. */ |
5777 | ||
5778 | static struct type_unit_group * | |
094b34ac | 5779 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5780 | { |
5781 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5782 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5783 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5784 | |
5785 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5786 | struct type_unit_group); | |
094b34ac | 5787 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 5788 | per_cu->objfile = objfile; |
f4dc4d17 | 5789 | |
094b34ac DE |
5790 | if (dwarf2_per_objfile->using_index) |
5791 | { | |
5792 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5793 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
5794 | } |
5795 | else | |
5796 | { | |
5797 | unsigned int line_offset = line_offset_struct.sect_off; | |
5798 | struct partial_symtab *pst; | |
5799 | char *name; | |
5800 | ||
5801 | /* Give the symtab a useful name for debug purposes. */ | |
5802 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5803 | name = xstrprintf ("<type_units_%d>", | |
5804 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5805 | else | |
5806 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5807 | ||
5808 | pst = create_partial_symtab (per_cu, name); | |
5809 | pst->anonymous = 1; | |
f4dc4d17 | 5810 | |
094b34ac DE |
5811 | xfree (name); |
5812 | } | |
f4dc4d17 | 5813 | |
094b34ac DE |
5814 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5815 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5816 | |
5817 | return tu_group; | |
5818 | } | |
5819 | ||
094b34ac DE |
5820 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5821 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5822 | |
5823 | static struct type_unit_group * | |
ff39bb5e | 5824 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
5825 | { |
5826 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5827 | struct type_unit_group *tu_group; | |
5828 | void **slot; | |
5829 | unsigned int line_offset; | |
5830 | struct type_unit_group type_unit_group_for_lookup; | |
5831 | ||
5832 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5833 | { | |
5834 | dwarf2_per_objfile->type_unit_groups = | |
5835 | allocate_type_unit_groups_table (); | |
5836 | } | |
5837 | ||
5838 | /* Do we need to create a new group, or can we use an existing one? */ | |
5839 | ||
5840 | if (stmt_list) | |
5841 | { | |
5842 | line_offset = DW_UNSND (stmt_list); | |
5843 | ++tu_stats->nr_symtab_sharers; | |
5844 | } | |
5845 | else | |
5846 | { | |
5847 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5848 | We can do various things here like create one group per TU or | |
5849 | spread them over multiple groups to split up the expansion work. | |
5850 | To avoid worst case scenarios (too many groups or too large groups) | |
5851 | we, umm, group them in bunches. */ | |
5852 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5853 | | (tu_stats->nr_stmt_less_type_units | |
5854 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5855 | ++tu_stats->nr_stmt_less_type_units; | |
5856 | } | |
5857 | ||
094b34ac DE |
5858 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5859 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5860 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5861 | &type_unit_group_for_lookup, INSERT); | |
5862 | if (*slot != NULL) | |
5863 | { | |
5864 | tu_group = *slot; | |
5865 | gdb_assert (tu_group != NULL); | |
5866 | } | |
5867 | else | |
5868 | { | |
5869 | sect_offset line_offset_struct; | |
5870 | ||
5871 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5872 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5873 | *slot = tu_group; |
5874 | ++tu_stats->nr_symtabs; | |
5875 | } | |
5876 | ||
5877 | return tu_group; | |
5878 | } | |
0018ea6f DE |
5879 | \f |
5880 | /* Partial symbol tables. */ | |
5881 | ||
5882 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5883 | ||
5884 | The caller must fill in the following details: | |
5885 | dirname, textlow, texthigh. */ | |
5886 | ||
5887 | static struct partial_symtab * | |
5888 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5889 | { | |
5890 | struct objfile *objfile = per_cu->objfile; | |
5891 | struct partial_symtab *pst; | |
5892 | ||
18a94d75 | 5893 | pst = start_psymtab_common (objfile, name, 0, |
0018ea6f DE |
5894 | objfile->global_psymbols.next, |
5895 | objfile->static_psymbols.next); | |
5896 | ||
5897 | pst->psymtabs_addrmap_supported = 1; | |
5898 | ||
5899 | /* This is the glue that links PST into GDB's symbol API. */ | |
5900 | pst->read_symtab_private = per_cu; | |
5901 | pst->read_symtab = dwarf2_read_symtab; | |
5902 | per_cu->v.psymtab = pst; | |
5903 | ||
5904 | return pst; | |
5905 | } | |
5906 | ||
b93601f3 TT |
5907 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
5908 | type. */ | |
5909 | ||
5910 | struct process_psymtab_comp_unit_data | |
5911 | { | |
5912 | /* True if we are reading a DW_TAG_partial_unit. */ | |
5913 | ||
5914 | int want_partial_unit; | |
5915 | ||
5916 | /* The "pretend" language that is used if the CU doesn't declare a | |
5917 | language. */ | |
5918 | ||
5919 | enum language pretend_language; | |
5920 | }; | |
5921 | ||
0018ea6f DE |
5922 | /* die_reader_func for process_psymtab_comp_unit. */ |
5923 | ||
5924 | static void | |
5925 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 5926 | const gdb_byte *info_ptr, |
0018ea6f DE |
5927 | struct die_info *comp_unit_die, |
5928 | int has_children, | |
5929 | void *data) | |
5930 | { | |
5931 | struct dwarf2_cu *cu = reader->cu; | |
5932 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 5933 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f DE |
5934 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
5935 | struct attribute *attr; | |
5936 | CORE_ADDR baseaddr; | |
5937 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
5938 | struct partial_symtab *pst; | |
5939 | int has_pc_info; | |
5940 | const char *filename; | |
b93601f3 | 5941 | struct process_psymtab_comp_unit_data *info = data; |
0018ea6f | 5942 | |
b93601f3 | 5943 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
5944 | return; |
5945 | ||
5946 | gdb_assert (! per_cu->is_debug_types); | |
5947 | ||
b93601f3 | 5948 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
5949 | |
5950 | cu->list_in_scope = &file_symbols; | |
5951 | ||
5952 | /* Allocate a new partial symbol table structure. */ | |
5953 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
5954 | if (attr == NULL || !DW_STRING (attr)) | |
5955 | filename = ""; | |
5956 | else | |
5957 | filename = DW_STRING (attr); | |
5958 | ||
5959 | pst = create_partial_symtab (per_cu, filename); | |
5960 | ||
5961 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
5962 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5963 | if (attr != NULL) | |
5964 | pst->dirname = DW_STRING (attr); | |
5965 | ||
5966 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5967 | ||
5968 | dwarf2_find_base_address (comp_unit_die, cu); | |
5969 | ||
5970 | /* Possibly set the default values of LOWPC and HIGHPC from | |
5971 | `DW_AT_ranges'. */ | |
5972 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, | |
5973 | &best_highpc, cu, pst); | |
5974 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
5975 | /* Store the contiguous range if it is not empty; it can be empty for | |
5976 | CUs with no code. */ | |
5977 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
5978 | gdbarch_adjust_dwarf2_addr (gdbarch, |
5979 | best_lowpc + baseaddr), | |
5980 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
5981 | best_highpc + baseaddr) - 1, | |
5982 | pst); | |
0018ea6f DE |
5983 | |
5984 | /* Check if comp unit has_children. | |
5985 | If so, read the rest of the partial symbols from this comp unit. | |
5986 | If not, there's no more debug_info for this comp unit. */ | |
5987 | if (has_children) | |
5988 | { | |
5989 | struct partial_die_info *first_die; | |
5990 | CORE_ADDR lowpc, highpc; | |
5991 | ||
5992 | lowpc = ((CORE_ADDR) -1); | |
5993 | highpc = ((CORE_ADDR) 0); | |
5994 | ||
5995 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5996 | ||
5997 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
5998 | ! has_pc_info, cu); | |
5999 | ||
6000 | /* If we didn't find a lowpc, set it to highpc to avoid | |
6001 | complaints from `maint check'. */ | |
6002 | if (lowpc == ((CORE_ADDR) -1)) | |
6003 | lowpc = highpc; | |
6004 | ||
6005 | /* If the compilation unit didn't have an explicit address range, | |
6006 | then use the information extracted from its child dies. */ | |
6007 | if (! has_pc_info) | |
6008 | { | |
6009 | best_lowpc = lowpc; | |
6010 | best_highpc = highpc; | |
6011 | } | |
6012 | } | |
3e29f34a MR |
6013 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
6014 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f DE |
6015 | |
6016 | pst->n_global_syms = objfile->global_psymbols.next - | |
6017 | (objfile->global_psymbols.list + pst->globals_offset); | |
6018 | pst->n_static_syms = objfile->static_psymbols.next - | |
6019 | (objfile->static_psymbols.list + pst->statics_offset); | |
6020 | sort_pst_symbols (objfile, pst); | |
6021 | ||
6022 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
6023 | { | |
6024 | int i; | |
6025 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6026 | struct dwarf2_per_cu_data *iter; | |
6027 | ||
6028 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
6029 | post-pass. */ | |
6030 | pst->number_of_dependencies = len; | |
6031 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6032 | len * sizeof (struct symtab *)); | |
6033 | for (i = 0; | |
6034 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6035 | i, iter); | |
6036 | ++i) | |
6037 | pst->dependencies[i] = iter->v.psymtab; | |
6038 | ||
6039 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6040 | } | |
6041 | ||
6042 | /* Get the list of files included in the current compilation unit, | |
6043 | and build a psymtab for each of them. */ | |
6044 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
6045 | ||
b4f54984 | 6046 | if (dwarf_read_debug) |
0018ea6f DE |
6047 | { |
6048 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6049 | ||
6050 | fprintf_unfiltered (gdb_stdlog, | |
6051 | "Psymtab for %s unit @0x%x: %s - %s" | |
6052 | ", %d global, %d static syms\n", | |
6053 | per_cu->is_debug_types ? "type" : "comp", | |
6054 | per_cu->offset.sect_off, | |
6055 | paddress (gdbarch, pst->textlow), | |
6056 | paddress (gdbarch, pst->texthigh), | |
6057 | pst->n_global_syms, pst->n_static_syms); | |
6058 | } | |
6059 | } | |
6060 | ||
6061 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6062 | Process compilation unit THIS_CU for a psymtab. */ | |
6063 | ||
6064 | static void | |
6065 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
6066 | int want_partial_unit, |
6067 | enum language pretend_language) | |
0018ea6f | 6068 | { |
b93601f3 TT |
6069 | struct process_psymtab_comp_unit_data info; |
6070 | ||
0018ea6f DE |
6071 | /* If this compilation unit was already read in, free the |
6072 | cached copy in order to read it in again. This is | |
6073 | necessary because we skipped some symbols when we first | |
6074 | read in the compilation unit (see load_partial_dies). | |
6075 | This problem could be avoided, but the benefit is unclear. */ | |
6076 | if (this_cu->cu != NULL) | |
6077 | free_one_cached_comp_unit (this_cu); | |
6078 | ||
6079 | gdb_assert (! this_cu->is_debug_types); | |
b93601f3 TT |
6080 | info.want_partial_unit = want_partial_unit; |
6081 | info.pretend_language = pretend_language; | |
0018ea6f DE |
6082 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
6083 | process_psymtab_comp_unit_reader, | |
b93601f3 | 6084 | &info); |
0018ea6f DE |
6085 | |
6086 | /* Age out any secondary CUs. */ | |
6087 | age_cached_comp_units (); | |
6088 | } | |
f4dc4d17 DE |
6089 | |
6090 | /* Reader function for build_type_psymtabs. */ | |
6091 | ||
6092 | static void | |
6093 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6094 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
6095 | struct die_info *type_unit_die, |
6096 | int has_children, | |
6097 | void *data) | |
6098 | { | |
6099 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6100 | struct dwarf2_cu *cu = reader->cu; | |
6101 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 6102 | struct signatured_type *sig_type; |
f4dc4d17 DE |
6103 | struct type_unit_group *tu_group; |
6104 | struct attribute *attr; | |
6105 | struct partial_die_info *first_die; | |
6106 | CORE_ADDR lowpc, highpc; | |
6107 | struct partial_symtab *pst; | |
6108 | ||
6109 | gdb_assert (data == NULL); | |
0186c6a7 DE |
6110 | gdb_assert (per_cu->is_debug_types); |
6111 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
6112 | |
6113 | if (! has_children) | |
6114 | return; | |
6115 | ||
6116 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 6117 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 6118 | |
0186c6a7 | 6119 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
6120 | |
6121 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
6122 | cu->list_in_scope = &file_symbols; | |
6123 | pst = create_partial_symtab (per_cu, ""); | |
6124 | pst->anonymous = 1; | |
6125 | ||
6126 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6127 | ||
6128 | lowpc = (CORE_ADDR) -1; | |
6129 | highpc = (CORE_ADDR) 0; | |
6130 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
6131 | ||
6132 | pst->n_global_syms = objfile->global_psymbols.next - | |
6133 | (objfile->global_psymbols.list + pst->globals_offset); | |
6134 | pst->n_static_syms = objfile->static_psymbols.next - | |
6135 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 6136 | sort_pst_symbols (objfile, pst); |
f4dc4d17 DE |
6137 | } |
6138 | ||
73051182 DE |
6139 | /* Struct used to sort TUs by their abbreviation table offset. */ |
6140 | ||
6141 | struct tu_abbrev_offset | |
6142 | { | |
6143 | struct signatured_type *sig_type; | |
6144 | sect_offset abbrev_offset; | |
6145 | }; | |
6146 | ||
6147 | /* Helper routine for build_type_psymtabs_1, passed to qsort. */ | |
6148 | ||
6149 | static int | |
6150 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
6151 | { | |
6152 | const struct tu_abbrev_offset * const *a = ap; | |
6153 | const struct tu_abbrev_offset * const *b = bp; | |
6154 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
6155 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
6156 | ||
6157 | return (aoff > boff) - (aoff < boff); | |
6158 | } | |
6159 | ||
6160 | /* Efficiently read all the type units. | |
6161 | This does the bulk of the work for build_type_psymtabs. | |
6162 | ||
6163 | The efficiency is because we sort TUs by the abbrev table they use and | |
6164 | only read each abbrev table once. In one program there are 200K TUs | |
6165 | sharing 8K abbrev tables. | |
6166 | ||
6167 | The main purpose of this function is to support building the | |
6168 | dwarf2_per_objfile->type_unit_groups table. | |
6169 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
6170 | can collapse the search space by grouping them by stmt_list. | |
6171 | The savings can be significant, in the same program from above the 200K TUs | |
6172 | share 8K stmt_list tables. | |
6173 | ||
6174 | FUNC is expected to call get_type_unit_group, which will create the | |
6175 | struct type_unit_group if necessary and add it to | |
6176 | dwarf2_per_objfile->type_unit_groups. */ | |
6177 | ||
6178 | static void | |
6179 | build_type_psymtabs_1 (void) | |
6180 | { | |
6181 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6182 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6183 | struct cleanup *cleanups; | |
6184 | struct abbrev_table *abbrev_table; | |
6185 | sect_offset abbrev_offset; | |
6186 | struct tu_abbrev_offset *sorted_by_abbrev; | |
6187 | struct type_unit_group **iter; | |
6188 | int i; | |
6189 | ||
6190 | /* It's up to the caller to not call us multiple times. */ | |
6191 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
6192 | ||
6193 | if (dwarf2_per_objfile->n_type_units == 0) | |
6194 | return; | |
6195 | ||
6196 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
6197 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
6198 | read each abbrev table in. | |
6199 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
6200 | This is simpler and efficient enough for now. | |
6201 | ||
6202 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
6203 | symtab to use). Typically TUs with the same abbrev offset have the same | |
6204 | stmt_list value too so in practice this should work well. | |
6205 | ||
6206 | The basic algorithm here is: | |
6207 | ||
6208 | sort TUs by abbrev table | |
6209 | for each TU with same abbrev table: | |
6210 | read abbrev table if first user | |
6211 | read TU top level DIE | |
6212 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
6213 | call FUNC */ | |
6214 | ||
b4f54984 | 6215 | if (dwarf_read_debug) |
73051182 DE |
6216 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
6217 | ||
6218 | /* Sort in a separate table to maintain the order of all_type_units | |
6219 | for .gdb_index: TU indices directly index all_type_units. */ | |
6220 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
6221 | dwarf2_per_objfile->n_type_units); | |
6222 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6223 | { | |
6224 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
6225 | ||
6226 | sorted_by_abbrev[i].sig_type = sig_type; | |
6227 | sorted_by_abbrev[i].abbrev_offset = | |
6228 | read_abbrev_offset (sig_type->per_cu.section, | |
6229 | sig_type->per_cu.offset); | |
6230 | } | |
6231 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
6232 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
6233 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
6234 | ||
6235 | abbrev_offset.sect_off = ~(unsigned) 0; | |
6236 | abbrev_table = NULL; | |
6237 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
6238 | ||
6239 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6240 | { | |
6241 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
6242 | ||
6243 | /* Switch to the next abbrev table if necessary. */ | |
6244 | if (abbrev_table == NULL | |
6245 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
6246 | { | |
6247 | if (abbrev_table != NULL) | |
6248 | { | |
6249 | abbrev_table_free (abbrev_table); | |
6250 | /* Reset to NULL in case abbrev_table_read_table throws | |
6251 | an error: abbrev_table_free_cleanup will get called. */ | |
6252 | abbrev_table = NULL; | |
6253 | } | |
6254 | abbrev_offset = tu->abbrev_offset; | |
6255 | abbrev_table = | |
6256 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
6257 | abbrev_offset); | |
6258 | ++tu_stats->nr_uniq_abbrev_tables; | |
6259 | } | |
6260 | ||
6261 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
6262 | build_type_psymtabs_reader, NULL); | |
6263 | } | |
6264 | ||
73051182 | 6265 | do_cleanups (cleanups); |
6aa5f3a6 | 6266 | } |
73051182 | 6267 | |
6aa5f3a6 DE |
6268 | /* Print collected type unit statistics. */ |
6269 | ||
6270 | static void | |
6271 | print_tu_stats (void) | |
6272 | { | |
6273 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6274 | ||
6275 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
6276 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
6277 | dwarf2_per_objfile->n_type_units); | |
6278 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
6279 | tu_stats->nr_uniq_abbrev_tables); | |
6280 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
6281 | tu_stats->nr_symtabs); | |
6282 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
6283 | tu_stats->nr_symtab_sharers); | |
6284 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
6285 | tu_stats->nr_stmt_less_type_units); | |
6286 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
6287 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
6288 | } |
6289 | ||
f4dc4d17 DE |
6290 | /* Traversal function for build_type_psymtabs. */ |
6291 | ||
6292 | static int | |
6293 | build_type_psymtab_dependencies (void **slot, void *info) | |
6294 | { | |
6295 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6296 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 6297 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 6298 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
6299 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
6300 | struct signatured_type *iter; | |
f4dc4d17 DE |
6301 | int i; |
6302 | ||
6303 | gdb_assert (len > 0); | |
0186c6a7 | 6304 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
6305 | |
6306 | pst->number_of_dependencies = len; | |
6307 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6308 | len * sizeof (struct psymtab *)); | |
6309 | for (i = 0; | |
0186c6a7 | 6310 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
6311 | ++i) |
6312 | { | |
0186c6a7 DE |
6313 | gdb_assert (iter->per_cu.is_debug_types); |
6314 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 6315 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
6316 | } |
6317 | ||
0186c6a7 | 6318 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
6319 | |
6320 | return 1; | |
6321 | } | |
6322 | ||
6323 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6324 | Build partial symbol tables for the .debug_types comp-units. */ | |
6325 | ||
6326 | static void | |
6327 | build_type_psymtabs (struct objfile *objfile) | |
6328 | { | |
0e50663e | 6329 | if (! create_all_type_units (objfile)) |
348e048f DE |
6330 | return; |
6331 | ||
73051182 | 6332 | build_type_psymtabs_1 (); |
6aa5f3a6 | 6333 | } |
f4dc4d17 | 6334 | |
6aa5f3a6 DE |
6335 | /* Traversal function for process_skeletonless_type_unit. |
6336 | Read a TU in a DWO file and build partial symbols for it. */ | |
6337 | ||
6338 | static int | |
6339 | process_skeletonless_type_unit (void **slot, void *info) | |
6340 | { | |
6341 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
6342 | struct objfile *objfile = info; | |
6343 | struct signatured_type find_entry, *entry; | |
6344 | ||
6345 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
6346 | ||
6347 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6348 | { | |
6349 | dwarf2_per_objfile->signatured_types | |
6350 | = allocate_signatured_type_table (objfile); | |
6351 | } | |
6352 | ||
6353 | find_entry.signature = dwo_unit->signature; | |
6354 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
6355 | INSERT); | |
6356 | /* If we've already seen this type there's nothing to do. What's happening | |
6357 | is we're doing our own version of comdat-folding here. */ | |
6358 | if (*slot != NULL) | |
6359 | return 1; | |
6360 | ||
6361 | /* This does the job that create_all_type_units would have done for | |
6362 | this TU. */ | |
6363 | entry = add_type_unit (dwo_unit->signature, slot); | |
6364 | fill_in_sig_entry_from_dwo_entry (objfile, entry, dwo_unit); | |
6365 | *slot = entry; | |
6366 | ||
6367 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6368 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
6369 | build_type_psymtabs_reader, NULL); | |
6370 | ||
6371 | return 1; | |
6372 | } | |
6373 | ||
6374 | /* Traversal function for process_skeletonless_type_units. */ | |
6375 | ||
6376 | static int | |
6377 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
6378 | { | |
6379 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
6380 | ||
6381 | if (dwo_file->tus != NULL) | |
6382 | { | |
6383 | htab_traverse_noresize (dwo_file->tus, | |
6384 | process_skeletonless_type_unit, info); | |
6385 | } | |
6386 | ||
6387 | return 1; | |
6388 | } | |
6389 | ||
6390 | /* Scan all TUs of DWO files, verifying we've processed them. | |
6391 | This is needed in case a TU was emitted without its skeleton. | |
6392 | Note: This can't be done until we know what all the DWO files are. */ | |
6393 | ||
6394 | static void | |
6395 | process_skeletonless_type_units (struct objfile *objfile) | |
6396 | { | |
6397 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
6398 | if (get_dwp_file () == NULL | |
6399 | && dwarf2_per_objfile->dwo_files != NULL) | |
6400 | { | |
6401 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
6402 | process_dwo_file_for_skeletonless_type_units, | |
6403 | objfile); | |
6404 | } | |
348e048f DE |
6405 | } |
6406 | ||
60606b2c TT |
6407 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
6408 | ||
6409 | static void | |
6410 | psymtabs_addrmap_cleanup (void *o) | |
6411 | { | |
6412 | struct objfile *objfile = o; | |
ec61707d | 6413 | |
60606b2c TT |
6414 | objfile->psymtabs_addrmap = NULL; |
6415 | } | |
6416 | ||
95554aad TT |
6417 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
6418 | ||
6419 | static void | |
6420 | set_partial_user (struct objfile *objfile) | |
6421 | { | |
6422 | int i; | |
6423 | ||
6424 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
6425 | { | |
8832e7e3 | 6426 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
95554aad TT |
6427 | struct partial_symtab *pst = per_cu->v.psymtab; |
6428 | int j; | |
6429 | ||
36586728 TT |
6430 | if (pst == NULL) |
6431 | continue; | |
6432 | ||
95554aad TT |
6433 | for (j = 0; j < pst->number_of_dependencies; ++j) |
6434 | { | |
6435 | /* Set the 'user' field only if it is not already set. */ | |
6436 | if (pst->dependencies[j]->user == NULL) | |
6437 | pst->dependencies[j]->user = pst; | |
6438 | } | |
6439 | } | |
6440 | } | |
6441 | ||
93311388 DE |
6442 | /* Build the partial symbol table by doing a quick pass through the |
6443 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 6444 | |
93311388 | 6445 | static void |
c67a9c90 | 6446 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 6447 | { |
60606b2c TT |
6448 | struct cleanup *back_to, *addrmap_cleanup; |
6449 | struct obstack temp_obstack; | |
21b2bd31 | 6450 | int i; |
93311388 | 6451 | |
b4f54984 | 6452 | if (dwarf_read_debug) |
45cfd468 DE |
6453 | { |
6454 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 6455 | objfile_name (objfile)); |
45cfd468 DE |
6456 | } |
6457 | ||
98bfdba5 PA |
6458 | dwarf2_per_objfile->reading_partial_symbols = 1; |
6459 | ||
be391dca | 6460 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 6461 | |
93311388 DE |
6462 | /* Any cached compilation units will be linked by the per-objfile |
6463 | read_in_chain. Make sure to free them when we're done. */ | |
6464 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 6465 | |
348e048f DE |
6466 | build_type_psymtabs (objfile); |
6467 | ||
93311388 | 6468 | create_all_comp_units (objfile); |
c906108c | 6469 | |
60606b2c TT |
6470 | /* Create a temporary address map on a temporary obstack. We later |
6471 | copy this to the final obstack. */ | |
6472 | obstack_init (&temp_obstack); | |
6473 | make_cleanup_obstack_free (&temp_obstack); | |
6474 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
6475 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 6476 | |
21b2bd31 | 6477 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 6478 | { |
8832e7e3 | 6479 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
aaa75496 | 6480 | |
b93601f3 | 6481 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 6482 | } |
ff013f42 | 6483 | |
6aa5f3a6 DE |
6484 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
6485 | process_skeletonless_type_units (objfile); | |
6486 | ||
6487 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
6488 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
6489 | { | |
6490 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
6491 | build_type_psymtab_dependencies, NULL); | |
6492 | } | |
6493 | ||
b4f54984 | 6494 | if (dwarf_read_debug) |
6aa5f3a6 DE |
6495 | print_tu_stats (); |
6496 | ||
95554aad TT |
6497 | set_partial_user (objfile); |
6498 | ||
ff013f42 JK |
6499 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
6500 | &objfile->objfile_obstack); | |
60606b2c | 6501 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 6502 | |
ae038cb0 | 6503 | do_cleanups (back_to); |
45cfd468 | 6504 | |
b4f54984 | 6505 | if (dwarf_read_debug) |
45cfd468 | 6506 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 6507 | objfile_name (objfile)); |
ae038cb0 DJ |
6508 | } |
6509 | ||
3019eac3 | 6510 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
6511 | |
6512 | static void | |
dee91e82 | 6513 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 6514 | const gdb_byte *info_ptr, |
dee91e82 DE |
6515 | struct die_info *comp_unit_die, |
6516 | int has_children, | |
6517 | void *data) | |
ae038cb0 | 6518 | { |
dee91e82 | 6519 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 6520 | |
95554aad | 6521 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 6522 | |
ae038cb0 DJ |
6523 | /* Check if comp unit has_children. |
6524 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 6525 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 6526 | if (has_children) |
dee91e82 DE |
6527 | load_partial_dies (reader, info_ptr, 0); |
6528 | } | |
98bfdba5 | 6529 | |
dee91e82 DE |
6530 | /* Load the partial DIEs for a secondary CU into memory. |
6531 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 6532 | |
dee91e82 DE |
6533 | static void |
6534 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
6535 | { | |
f4dc4d17 DE |
6536 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6537 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
6538 | } |
6539 | ||
ae038cb0 | 6540 | static void |
36586728 TT |
6541 | read_comp_units_from_section (struct objfile *objfile, |
6542 | struct dwarf2_section_info *section, | |
6543 | unsigned int is_dwz, | |
6544 | int *n_allocated, | |
6545 | int *n_comp_units, | |
6546 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 6547 | { |
d521ce57 | 6548 | const gdb_byte *info_ptr; |
a32a8923 | 6549 | bfd *abfd = get_section_bfd_owner (section); |
be391dca | 6550 | |
b4f54984 | 6551 | if (dwarf_read_debug) |
bf6af496 | 6552 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
6553 | get_section_name (section), |
6554 | get_section_file_name (section)); | |
bf6af496 | 6555 | |
36586728 | 6556 | dwarf2_read_section (objfile, section); |
ae038cb0 | 6557 | |
36586728 | 6558 | info_ptr = section->buffer; |
6e70227d | 6559 | |
36586728 | 6560 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 6561 | { |
c764a876 | 6562 | unsigned int length, initial_length_size; |
ae038cb0 | 6563 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 6564 | sect_offset offset; |
ae038cb0 | 6565 | |
36586728 | 6566 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
6567 | |
6568 | /* Read just enough information to find out where the next | |
6569 | compilation unit is. */ | |
36586728 | 6570 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
6571 | |
6572 | /* Save the compilation unit for later lookup. */ | |
6573 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
6574 | sizeof (struct dwarf2_per_cu_data)); | |
6575 | memset (this_cu, 0, sizeof (*this_cu)); | |
6576 | this_cu->offset = offset; | |
c764a876 | 6577 | this_cu->length = length + initial_length_size; |
36586728 | 6578 | this_cu->is_dwz = is_dwz; |
9291a0cd | 6579 | this_cu->objfile = objfile; |
8a0459fd | 6580 | this_cu->section = section; |
ae038cb0 | 6581 | |
36586728 | 6582 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 6583 | { |
36586728 TT |
6584 | *n_allocated *= 2; |
6585 | *all_comp_units = xrealloc (*all_comp_units, | |
6586 | *n_allocated | |
6587 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 6588 | } |
36586728 TT |
6589 | (*all_comp_units)[*n_comp_units] = this_cu; |
6590 | ++*n_comp_units; | |
ae038cb0 DJ |
6591 | |
6592 | info_ptr = info_ptr + this_cu->length; | |
6593 | } | |
36586728 TT |
6594 | } |
6595 | ||
6596 | /* Create a list of all compilation units in OBJFILE. | |
6597 | This is only done for -readnow and building partial symtabs. */ | |
6598 | ||
6599 | static void | |
6600 | create_all_comp_units (struct objfile *objfile) | |
6601 | { | |
6602 | int n_allocated; | |
6603 | int n_comp_units; | |
6604 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 6605 | struct dwz_file *dwz; |
36586728 TT |
6606 | |
6607 | n_comp_units = 0; | |
6608 | n_allocated = 10; | |
6609 | all_comp_units = xmalloc (n_allocated | |
6610 | * sizeof (struct dwarf2_per_cu_data *)); | |
6611 | ||
6612 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
6613 | &n_allocated, &n_comp_units, &all_comp_units); | |
6614 | ||
4db1a1dc TT |
6615 | dwz = dwarf2_get_dwz_file (); |
6616 | if (dwz != NULL) | |
6617 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
6618 | &n_allocated, &n_comp_units, | |
6619 | &all_comp_units); | |
ae038cb0 DJ |
6620 | |
6621 | dwarf2_per_objfile->all_comp_units | |
6622 | = obstack_alloc (&objfile->objfile_obstack, | |
6623 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6624 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
6625 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6626 | xfree (all_comp_units); | |
6627 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
6628 | } |
6629 | ||
5734ee8b | 6630 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 6631 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 6632 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
6633 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
6634 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 6635 | |
72bf9492 DJ |
6636 | static void |
6637 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
6638 | CORE_ADDR *highpc, int set_addrmap, |
6639 | struct dwarf2_cu *cu) | |
c906108c | 6640 | { |
72bf9492 | 6641 | struct partial_die_info *pdi; |
c906108c | 6642 | |
91c24f0a DC |
6643 | /* Now, march along the PDI's, descending into ones which have |
6644 | interesting children but skipping the children of the other ones, | |
6645 | until we reach the end of the compilation unit. */ | |
c906108c | 6646 | |
72bf9492 | 6647 | pdi = first_die; |
91c24f0a | 6648 | |
72bf9492 DJ |
6649 | while (pdi != NULL) |
6650 | { | |
6651 | fixup_partial_die (pdi, cu); | |
c906108c | 6652 | |
f55ee35c | 6653 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
6654 | children, so we need to look at them. Ditto for anonymous |
6655 | enums. */ | |
933c6fe4 | 6656 | |
72bf9492 | 6657 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
6658 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
6659 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 6660 | { |
72bf9492 | 6661 | switch (pdi->tag) |
c906108c SS |
6662 | { |
6663 | case DW_TAG_subprogram: | |
cdc07690 | 6664 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 6665 | break; |
72929c62 | 6666 | case DW_TAG_constant: |
c906108c SS |
6667 | case DW_TAG_variable: |
6668 | case DW_TAG_typedef: | |
91c24f0a | 6669 | case DW_TAG_union_type: |
72bf9492 | 6670 | if (!pdi->is_declaration) |
63d06c5c | 6671 | { |
72bf9492 | 6672 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
6673 | } |
6674 | break; | |
c906108c | 6675 | case DW_TAG_class_type: |
680b30c7 | 6676 | case DW_TAG_interface_type: |
c906108c | 6677 | case DW_TAG_structure_type: |
72bf9492 | 6678 | if (!pdi->is_declaration) |
c906108c | 6679 | { |
72bf9492 | 6680 | add_partial_symbol (pdi, cu); |
c906108c SS |
6681 | } |
6682 | break; | |
91c24f0a | 6683 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
6684 | if (!pdi->is_declaration) |
6685 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
6686 | break; |
6687 | case DW_TAG_base_type: | |
a02abb62 | 6688 | case DW_TAG_subrange_type: |
c906108c | 6689 | /* File scope base type definitions are added to the partial |
c5aa993b | 6690 | symbol table. */ |
72bf9492 | 6691 | add_partial_symbol (pdi, cu); |
c906108c | 6692 | break; |
d9fa45fe | 6693 | case DW_TAG_namespace: |
cdc07690 | 6694 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 6695 | break; |
5d7cb8df | 6696 | case DW_TAG_module: |
cdc07690 | 6697 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 6698 | break; |
95554aad TT |
6699 | case DW_TAG_imported_unit: |
6700 | { | |
6701 | struct dwarf2_per_cu_data *per_cu; | |
6702 | ||
f4dc4d17 DE |
6703 | /* For now we don't handle imported units in type units. */ |
6704 | if (cu->per_cu->is_debug_types) | |
6705 | { | |
6706 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6707 | " supported in type units [in module %s]"), | |
4262abfb | 6708 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
6709 | } |
6710 | ||
95554aad | 6711 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 6712 | pdi->is_dwz, |
95554aad TT |
6713 | cu->objfile); |
6714 | ||
6715 | /* Go read the partial unit, if needed. */ | |
6716 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 6717 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 6718 | |
f4dc4d17 | 6719 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 6720 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
6721 | } |
6722 | break; | |
74921315 KS |
6723 | case DW_TAG_imported_declaration: |
6724 | add_partial_symbol (pdi, cu); | |
6725 | break; | |
c906108c SS |
6726 | default: |
6727 | break; | |
6728 | } | |
6729 | } | |
6730 | ||
72bf9492 DJ |
6731 | /* If the die has a sibling, skip to the sibling. */ |
6732 | ||
6733 | pdi = pdi->die_sibling; | |
6734 | } | |
6735 | } | |
6736 | ||
6737 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 6738 | |
72bf9492 | 6739 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
6740 | name is concatenated with "::" and the partial DIE's name. For |
6741 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
6742 | Enumerators are an exception; they use the scope of their parent |
6743 | enumeration type, i.e. the name of the enumeration type is not | |
6744 | prepended to the enumerator. | |
91c24f0a | 6745 | |
72bf9492 DJ |
6746 | There are two complexities. One is DW_AT_specification; in this |
6747 | case "parent" means the parent of the target of the specification, | |
6748 | instead of the direct parent of the DIE. The other is compilers | |
6749 | which do not emit DW_TAG_namespace; in this case we try to guess | |
6750 | the fully qualified name of structure types from their members' | |
6751 | linkage names. This must be done using the DIE's children rather | |
6752 | than the children of any DW_AT_specification target. We only need | |
6753 | to do this for structures at the top level, i.e. if the target of | |
6754 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
6755 | have a parent. */ | |
6756 | ||
6757 | /* Compute the scope prefix associated with PDI's parent, in | |
6758 | compilation unit CU. The result will be allocated on CU's | |
6759 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
6760 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 6761 | static const char * |
72bf9492 DJ |
6762 | partial_die_parent_scope (struct partial_die_info *pdi, |
6763 | struct dwarf2_cu *cu) | |
6764 | { | |
15d034d0 | 6765 | const char *grandparent_scope; |
72bf9492 | 6766 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 6767 | |
72bf9492 DJ |
6768 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
6769 | then this means the parent of the specification DIE. */ | |
6770 | ||
6771 | real_pdi = pdi; | |
72bf9492 | 6772 | while (real_pdi->has_specification) |
36586728 TT |
6773 | real_pdi = find_partial_die (real_pdi->spec_offset, |
6774 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
6775 | |
6776 | parent = real_pdi->die_parent; | |
6777 | if (parent == NULL) | |
6778 | return NULL; | |
6779 | ||
6780 | if (parent->scope_set) | |
6781 | return parent->scope; | |
6782 | ||
6783 | fixup_partial_die (parent, cu); | |
6784 | ||
10b3939b | 6785 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 6786 | |
acebe513 UW |
6787 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
6788 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
6789 | Work around this problem here. */ | |
6790 | if (cu->language == language_cplus | |
6e70227d | 6791 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
6792 | && strcmp (parent->name, "::") == 0 |
6793 | && grandparent_scope == NULL) | |
6794 | { | |
6795 | parent->scope = NULL; | |
6796 | parent->scope_set = 1; | |
6797 | return NULL; | |
6798 | } | |
6799 | ||
9c6c53f7 SA |
6800 | if (pdi->tag == DW_TAG_enumerator) |
6801 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
6802 | parent->scope = grandparent_scope; | |
6803 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 6804 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
6805 | || parent->tag == DW_TAG_structure_type |
6806 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 6807 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
6808 | || parent->tag == DW_TAG_union_type |
6809 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
6810 | { |
6811 | if (grandparent_scope == NULL) | |
6812 | parent->scope = parent->name; | |
6813 | else | |
3e43a32a MS |
6814 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
6815 | grandparent_scope, | |
f55ee35c | 6816 | parent->name, 0, cu); |
72bf9492 | 6817 | } |
72bf9492 DJ |
6818 | else |
6819 | { | |
6820 | /* FIXME drow/2004-04-01: What should we be doing with | |
6821 | function-local names? For partial symbols, we should probably be | |
6822 | ignoring them. */ | |
6823 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6824 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 6825 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 6826 | parent->scope = grandparent_scope; |
c906108c SS |
6827 | } |
6828 | ||
72bf9492 DJ |
6829 | parent->scope_set = 1; |
6830 | return parent->scope; | |
6831 | } | |
6832 | ||
6833 | /* Return the fully scoped name associated with PDI, from compilation unit | |
6834 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 6835 | |
72bf9492 DJ |
6836 | static char * |
6837 | partial_die_full_name (struct partial_die_info *pdi, | |
6838 | struct dwarf2_cu *cu) | |
6839 | { | |
15d034d0 | 6840 | const char *parent_scope; |
72bf9492 | 6841 | |
98bfdba5 PA |
6842 | /* If this is a template instantiation, we can not work out the |
6843 | template arguments from partial DIEs. So, unfortunately, we have | |
6844 | to go through the full DIEs. At least any work we do building | |
6845 | types here will be reused if full symbols are loaded later. */ | |
6846 | if (pdi->has_template_arguments) | |
6847 | { | |
6848 | fixup_partial_die (pdi, cu); | |
6849 | ||
6850 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
6851 | { | |
6852 | struct die_info *die; | |
6853 | struct attribute attr; | |
6854 | struct dwarf2_cu *ref_cu = cu; | |
6855 | ||
b64f50a1 | 6856 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
6857 | attr.name = 0; |
6858 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 6859 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
6860 | die = follow_die_ref (NULL, &attr, &ref_cu); |
6861 | ||
6862 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
6863 | } | |
6864 | } | |
6865 | ||
72bf9492 DJ |
6866 | parent_scope = partial_die_parent_scope (pdi, cu); |
6867 | if (parent_scope == NULL) | |
6868 | return NULL; | |
6869 | else | |
f55ee35c | 6870 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
6871 | } |
6872 | ||
6873 | static void | |
72bf9492 | 6874 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 6875 | { |
e7c27a73 | 6876 | struct objfile *objfile = cu->objfile; |
3e29f34a | 6877 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 6878 | CORE_ADDR addr = 0; |
15d034d0 | 6879 | const char *actual_name = NULL; |
e142c38c | 6880 | CORE_ADDR baseaddr; |
15d034d0 | 6881 | char *built_actual_name; |
e142c38c DJ |
6882 | |
6883 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6884 | |
15d034d0 TT |
6885 | built_actual_name = partial_die_full_name (pdi, cu); |
6886 | if (built_actual_name != NULL) | |
6887 | actual_name = built_actual_name; | |
63d06c5c | 6888 | |
72bf9492 DJ |
6889 | if (actual_name == NULL) |
6890 | actual_name = pdi->name; | |
6891 | ||
c906108c SS |
6892 | switch (pdi->tag) |
6893 | { | |
6894 | case DW_TAG_subprogram: | |
3e29f34a | 6895 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 6896 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 6897 | { |
2cfa0c8d JB |
6898 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
6899 | of the global scope. But in Ada, we want to be able to access | |
6900 | nested procedures globally. So all Ada subprograms are stored | |
6901 | in the global scope. */ | |
3e29f34a MR |
6902 | /* prim_record_minimal_symbol (actual_name, addr, mst_text, |
6903 | objfile); */ | |
f47fb265 | 6904 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6905 | built_actual_name != NULL, |
f47fb265 MS |
6906 | VAR_DOMAIN, LOC_BLOCK, |
6907 | &objfile->global_psymbols, | |
3e29f34a | 6908 | 0, addr, cu->language, objfile); |
c906108c SS |
6909 | } |
6910 | else | |
6911 | { | |
3e29f34a MR |
6912 | /* prim_record_minimal_symbol (actual_name, addr, mst_file_text, |
6913 | objfile); */ | |
f47fb265 | 6914 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6915 | built_actual_name != NULL, |
f47fb265 MS |
6916 | VAR_DOMAIN, LOC_BLOCK, |
6917 | &objfile->static_psymbols, | |
3e29f34a | 6918 | 0, addr, cu->language, objfile); |
c906108c SS |
6919 | } |
6920 | break; | |
72929c62 JB |
6921 | case DW_TAG_constant: |
6922 | { | |
6923 | struct psymbol_allocation_list *list; | |
6924 | ||
6925 | if (pdi->is_external) | |
6926 | list = &objfile->global_psymbols; | |
6927 | else | |
6928 | list = &objfile->static_psymbols; | |
f47fb265 | 6929 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6930 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
f47fb265 | 6931 | list, 0, 0, cu->language, objfile); |
72929c62 JB |
6932 | } |
6933 | break; | |
c906108c | 6934 | case DW_TAG_variable: |
95554aad TT |
6935 | if (pdi->d.locdesc) |
6936 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 6937 | |
95554aad | 6938 | if (pdi->d.locdesc |
caac4577 JG |
6939 | && addr == 0 |
6940 | && !dwarf2_per_objfile->has_section_at_zero) | |
6941 | { | |
6942 | /* A global or static variable may also have been stripped | |
6943 | out by the linker if unused, in which case its address | |
6944 | will be nullified; do not add such variables into partial | |
6945 | symbol table then. */ | |
6946 | } | |
6947 | else if (pdi->is_external) | |
c906108c SS |
6948 | { |
6949 | /* Global Variable. | |
6950 | Don't enter into the minimal symbol tables as there is | |
6951 | a minimal symbol table entry from the ELF symbols already. | |
6952 | Enter into partial symbol table if it has a location | |
6953 | descriptor or a type. | |
6954 | If the location descriptor is missing, new_symbol will create | |
6955 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
6956 | be determined from the minimal symbol table whenever the variable | |
6957 | is referenced. | |
6958 | The address for the partial symbol table entry is not | |
6959 | used by GDB, but it comes in handy for debugging partial symbol | |
6960 | table building. */ | |
6961 | ||
95554aad | 6962 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 6963 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6964 | built_actual_name != NULL, |
f47fb265 MS |
6965 | VAR_DOMAIN, LOC_STATIC, |
6966 | &objfile->global_psymbols, | |
6967 | 0, addr + baseaddr, | |
6968 | cu->language, objfile); | |
c906108c SS |
6969 | } |
6970 | else | |
6971 | { | |
ff908ebf AW |
6972 | int has_loc = pdi->d.locdesc != NULL; |
6973 | ||
6974 | /* Static Variable. Skip symbols whose value we cannot know (those | |
6975 | without location descriptors or constant values). */ | |
6976 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 6977 | { |
15d034d0 | 6978 | xfree (built_actual_name); |
decbce07 MS |
6979 | return; |
6980 | } | |
ff908ebf | 6981 | |
f47fb265 | 6982 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 6983 | mst_file_data, objfile); */ |
f47fb265 | 6984 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6985 | built_actual_name != NULL, |
f47fb265 MS |
6986 | VAR_DOMAIN, LOC_STATIC, |
6987 | &objfile->static_psymbols, | |
ff908ebf AW |
6988 | 0, |
6989 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, | |
f47fb265 | 6990 | cu->language, objfile); |
c906108c SS |
6991 | } |
6992 | break; | |
6993 | case DW_TAG_typedef: | |
6994 | case DW_TAG_base_type: | |
a02abb62 | 6995 | case DW_TAG_subrange_type: |
38d518c9 | 6996 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6997 | built_actual_name != NULL, |
176620f1 | 6998 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 6999 | &objfile->static_psymbols, |
e142c38c | 7000 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 7001 | break; |
74921315 | 7002 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
7003 | case DW_TAG_namespace: |
7004 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 7005 | built_actual_name != NULL, |
72bf9492 DJ |
7006 | VAR_DOMAIN, LOC_TYPEDEF, |
7007 | &objfile->global_psymbols, | |
7008 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
7009 | break; | |
530e8392 KB |
7010 | case DW_TAG_module: |
7011 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
7012 | built_actual_name != NULL, | |
7013 | MODULE_DOMAIN, LOC_TYPEDEF, | |
7014 | &objfile->global_psymbols, | |
7015 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
7016 | break; | |
c906108c | 7017 | case DW_TAG_class_type: |
680b30c7 | 7018 | case DW_TAG_interface_type: |
c906108c SS |
7019 | case DW_TAG_structure_type: |
7020 | case DW_TAG_union_type: | |
7021 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
7022 | /* Skip external references. The DWARF standard says in the section |
7023 | about "Structure, Union, and Class Type Entries": "An incomplete | |
7024 | structure, union or class type is represented by a structure, | |
7025 | union or class entry that does not have a byte size attribute | |
7026 | and that has a DW_AT_declaration attribute." */ | |
7027 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 7028 | { |
15d034d0 | 7029 | xfree (built_actual_name); |
decbce07 MS |
7030 | return; |
7031 | } | |
fa4028e9 | 7032 | |
63d06c5c DC |
7033 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
7034 | static vs. global. */ | |
38d518c9 | 7035 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7036 | built_actual_name != NULL, |
176620f1 | 7037 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
7038 | (cu->language == language_cplus |
7039 | || cu->language == language_java) | |
63d06c5c DC |
7040 | ? &objfile->global_psymbols |
7041 | : &objfile->static_psymbols, | |
e142c38c | 7042 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 7043 | |
c906108c SS |
7044 | break; |
7045 | case DW_TAG_enumerator: | |
38d518c9 | 7046 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7047 | built_actual_name != NULL, |
176620f1 | 7048 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
7049 | (cu->language == language_cplus |
7050 | || cu->language == language_java) | |
f6fe98ef DJ |
7051 | ? &objfile->global_psymbols |
7052 | : &objfile->static_psymbols, | |
e142c38c | 7053 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
7054 | break; |
7055 | default: | |
7056 | break; | |
7057 | } | |
5c4e30ca | 7058 | |
15d034d0 | 7059 | xfree (built_actual_name); |
c906108c SS |
7060 | } |
7061 | ||
5c4e30ca DC |
7062 | /* Read a partial die corresponding to a namespace; also, add a symbol |
7063 | corresponding to that namespace to the symbol table. NAMESPACE is | |
7064 | the name of the enclosing namespace. */ | |
91c24f0a | 7065 | |
72bf9492 DJ |
7066 | static void |
7067 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 7068 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 7069 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 7070 | { |
72bf9492 | 7071 | /* Add a symbol for the namespace. */ |
e7c27a73 | 7072 | |
72bf9492 | 7073 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
7074 | |
7075 | /* Now scan partial symbols in that namespace. */ | |
7076 | ||
91c24f0a | 7077 | if (pdi->has_children) |
cdc07690 | 7078 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
7079 | } |
7080 | ||
5d7cb8df JK |
7081 | /* Read a partial die corresponding to a Fortran module. */ |
7082 | ||
7083 | static void | |
7084 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 7085 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 7086 | { |
530e8392 KB |
7087 | /* Add a symbol for the namespace. */ |
7088 | ||
7089 | add_partial_symbol (pdi, cu); | |
7090 | ||
f55ee35c | 7091 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
7092 | |
7093 | if (pdi->has_children) | |
cdc07690 | 7094 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
7095 | } |
7096 | ||
bc30ff58 JB |
7097 | /* Read a partial die corresponding to a subprogram and create a partial |
7098 | symbol for that subprogram. When the CU language allows it, this | |
7099 | routine also defines a partial symbol for each nested subprogram | |
cdc07690 | 7100 | that this subprogram contains. If SET_ADDRMAP is true, record the |
428fc5fc YQ |
7101 | covered ranges in the addrmap. Set *LOWPC and *HIGHPC to the lowest |
7102 | and highest PC values found in PDI. | |
6e70227d | 7103 | |
cdc07690 YQ |
7104 | PDI may also be a lexical block, in which case we simply search |
7105 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
7106 | Again, this is only performed when the CU language allows this |
7107 | type of definitions. */ | |
7108 | ||
7109 | static void | |
7110 | add_partial_subprogram (struct partial_die_info *pdi, | |
7111 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 7112 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 JB |
7113 | { |
7114 | if (pdi->tag == DW_TAG_subprogram) | |
7115 | { | |
7116 | if (pdi->has_pc_info) | |
7117 | { | |
7118 | if (pdi->lowpc < *lowpc) | |
7119 | *lowpc = pdi->lowpc; | |
7120 | if (pdi->highpc > *highpc) | |
7121 | *highpc = pdi->highpc; | |
cdc07690 | 7122 | if (set_addrmap) |
5734ee8b | 7123 | { |
5734ee8b | 7124 | struct objfile *objfile = cu->objfile; |
3e29f34a MR |
7125 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
7126 | CORE_ADDR baseaddr; | |
7127 | CORE_ADDR highpc; | |
7128 | CORE_ADDR lowpc; | |
5734ee8b DJ |
7129 | |
7130 | baseaddr = ANOFFSET (objfile->section_offsets, | |
7131 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
7132 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
7133 | pdi->lowpc + baseaddr); | |
7134 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
7135 | pdi->highpc + baseaddr); | |
7136 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 7137 | cu->per_cu->v.psymtab); |
5734ee8b | 7138 | } |
481860b3 GB |
7139 | } |
7140 | ||
7141 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
7142 | { | |
bc30ff58 | 7143 | if (!pdi->is_declaration) |
e8d05480 JB |
7144 | /* Ignore subprogram DIEs that do not have a name, they are |
7145 | illegal. Do not emit a complaint at this point, we will | |
7146 | do so when we convert this psymtab into a symtab. */ | |
7147 | if (pdi->name) | |
7148 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
7149 | } |
7150 | } | |
6e70227d | 7151 | |
bc30ff58 JB |
7152 | if (! pdi->has_children) |
7153 | return; | |
7154 | ||
7155 | if (cu->language == language_ada) | |
7156 | { | |
7157 | pdi = pdi->die_child; | |
7158 | while (pdi != NULL) | |
7159 | { | |
7160 | fixup_partial_die (pdi, cu); | |
7161 | if (pdi->tag == DW_TAG_subprogram | |
7162 | || pdi->tag == DW_TAG_lexical_block) | |
cdc07690 | 7163 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
7164 | pdi = pdi->die_sibling; |
7165 | } | |
7166 | } | |
7167 | } | |
7168 | ||
91c24f0a DC |
7169 | /* Read a partial die corresponding to an enumeration type. */ |
7170 | ||
72bf9492 DJ |
7171 | static void |
7172 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
7173 | struct dwarf2_cu *cu) | |
91c24f0a | 7174 | { |
72bf9492 | 7175 | struct partial_die_info *pdi; |
91c24f0a DC |
7176 | |
7177 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
7178 | add_partial_symbol (enum_pdi, cu); |
7179 | ||
7180 | pdi = enum_pdi->die_child; | |
7181 | while (pdi) | |
91c24f0a | 7182 | { |
72bf9492 | 7183 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 7184 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 7185 | else |
72bf9492 DJ |
7186 | add_partial_symbol (pdi, cu); |
7187 | pdi = pdi->die_sibling; | |
91c24f0a | 7188 | } |
91c24f0a DC |
7189 | } |
7190 | ||
6caca83c CC |
7191 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
7192 | ||
7193 | static unsigned int | |
d521ce57 | 7194 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
7195 | { |
7196 | unsigned int bytes_read; | |
7197 | ||
7198 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7199 | } | |
7200 | ||
4bb7a0a7 DJ |
7201 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
7202 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
7203 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
7204 | the initial number. */ | |
7205 | ||
7206 | static struct abbrev_info * | |
d521ce57 | 7207 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 7208 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
7209 | { |
7210 | bfd *abfd = cu->objfile->obfd; | |
7211 | unsigned int abbrev_number; | |
7212 | struct abbrev_info *abbrev; | |
7213 | ||
7214 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
7215 | ||
7216 | if (abbrev_number == 0) | |
7217 | return NULL; | |
7218 | ||
433df2d4 | 7219 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
7220 | if (!abbrev) |
7221 | { | |
422b9917 DE |
7222 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
7223 | " at offset 0x%x [in module %s]"), | |
7224 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", | |
7225 | cu->header.offset.sect_off, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
7226 | } |
7227 | ||
7228 | return abbrev; | |
7229 | } | |
7230 | ||
93311388 DE |
7231 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7232 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
7233 | DIE. Any children of the skipped DIEs will also be skipped. */ |
7234 | ||
d521ce57 TT |
7235 | static const gdb_byte * |
7236 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 7237 | { |
dee91e82 | 7238 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
7239 | struct abbrev_info *abbrev; |
7240 | unsigned int bytes_read; | |
7241 | ||
7242 | while (1) | |
7243 | { | |
7244 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
7245 | if (abbrev == NULL) | |
7246 | return info_ptr + bytes_read; | |
7247 | else | |
dee91e82 | 7248 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
7249 | } |
7250 | } | |
7251 | ||
93311388 DE |
7252 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7253 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
7254 | abbrev corresponding to that skipped uleb128 should be passed in |
7255 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
7256 | children. */ | |
7257 | ||
d521ce57 TT |
7258 | static const gdb_byte * |
7259 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 7260 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
7261 | { |
7262 | unsigned int bytes_read; | |
7263 | struct attribute attr; | |
dee91e82 DE |
7264 | bfd *abfd = reader->abfd; |
7265 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 7266 | const gdb_byte *buffer = reader->buffer; |
f664829e | 7267 | const gdb_byte *buffer_end = reader->buffer_end; |
d521ce57 | 7268 | const gdb_byte *start_info_ptr = info_ptr; |
4bb7a0a7 DJ |
7269 | unsigned int form, i; |
7270 | ||
7271 | for (i = 0; i < abbrev->num_attrs; i++) | |
7272 | { | |
7273 | /* The only abbrev we care about is DW_AT_sibling. */ | |
7274 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
7275 | { | |
dee91e82 | 7276 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 7277 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
7278 | complaint (&symfile_complaints, |
7279 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 7280 | else |
b9502d3f WN |
7281 | { |
7282 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
7283 | const gdb_byte *sibling_ptr = buffer + off; | |
7284 | ||
7285 | if (sibling_ptr < info_ptr) | |
7286 | complaint (&symfile_complaints, | |
7287 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
7288 | else if (sibling_ptr > reader->buffer_end) |
7289 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
7290 | else |
7291 | return sibling_ptr; | |
7292 | } | |
4bb7a0a7 DJ |
7293 | } |
7294 | ||
7295 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
7296 | form = abbrev->attrs[i].form; | |
7297 | skip_attribute: | |
7298 | switch (form) | |
7299 | { | |
4bb7a0a7 | 7300 | case DW_FORM_ref_addr: |
ae411497 TT |
7301 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
7302 | and later it is offset sized. */ | |
7303 | if (cu->header.version == 2) | |
7304 | info_ptr += cu->header.addr_size; | |
7305 | else | |
7306 | info_ptr += cu->header.offset_size; | |
7307 | break; | |
36586728 TT |
7308 | case DW_FORM_GNU_ref_alt: |
7309 | info_ptr += cu->header.offset_size; | |
7310 | break; | |
ae411497 | 7311 | case DW_FORM_addr: |
4bb7a0a7 DJ |
7312 | info_ptr += cu->header.addr_size; |
7313 | break; | |
7314 | case DW_FORM_data1: | |
7315 | case DW_FORM_ref1: | |
7316 | case DW_FORM_flag: | |
7317 | info_ptr += 1; | |
7318 | break; | |
2dc7f7b3 TT |
7319 | case DW_FORM_flag_present: |
7320 | break; | |
4bb7a0a7 DJ |
7321 | case DW_FORM_data2: |
7322 | case DW_FORM_ref2: | |
7323 | info_ptr += 2; | |
7324 | break; | |
7325 | case DW_FORM_data4: | |
7326 | case DW_FORM_ref4: | |
7327 | info_ptr += 4; | |
7328 | break; | |
7329 | case DW_FORM_data8: | |
7330 | case DW_FORM_ref8: | |
55f1336d | 7331 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
7332 | info_ptr += 8; |
7333 | break; | |
7334 | case DW_FORM_string: | |
9b1c24c8 | 7335 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
7336 | info_ptr += bytes_read; |
7337 | break; | |
2dc7f7b3 | 7338 | case DW_FORM_sec_offset: |
4bb7a0a7 | 7339 | case DW_FORM_strp: |
36586728 | 7340 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
7341 | info_ptr += cu->header.offset_size; |
7342 | break; | |
2dc7f7b3 | 7343 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
7344 | case DW_FORM_block: |
7345 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7346 | info_ptr += bytes_read; | |
7347 | break; | |
7348 | case DW_FORM_block1: | |
7349 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
7350 | break; | |
7351 | case DW_FORM_block2: | |
7352 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
7353 | break; | |
7354 | case DW_FORM_block4: | |
7355 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
7356 | break; | |
7357 | case DW_FORM_sdata: | |
7358 | case DW_FORM_udata: | |
7359 | case DW_FORM_ref_udata: | |
3019eac3 DE |
7360 | case DW_FORM_GNU_addr_index: |
7361 | case DW_FORM_GNU_str_index: | |
d521ce57 | 7362 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
7363 | break; |
7364 | case DW_FORM_indirect: | |
7365 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7366 | info_ptr += bytes_read; | |
7367 | /* We need to continue parsing from here, so just go back to | |
7368 | the top. */ | |
7369 | goto skip_attribute; | |
7370 | ||
7371 | default: | |
3e43a32a MS |
7372 | error (_("Dwarf Error: Cannot handle %s " |
7373 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
7374 | dwarf_form_name (form), |
7375 | bfd_get_filename (abfd)); | |
7376 | } | |
7377 | } | |
7378 | ||
7379 | if (abbrev->has_children) | |
dee91e82 | 7380 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
7381 | else |
7382 | return info_ptr; | |
7383 | } | |
7384 | ||
93311388 | 7385 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 7386 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 7387 | |
d521ce57 | 7388 | static const gdb_byte * |
dee91e82 DE |
7389 | locate_pdi_sibling (const struct die_reader_specs *reader, |
7390 | struct partial_die_info *orig_pdi, | |
d521ce57 | 7391 | const gdb_byte *info_ptr) |
91c24f0a DC |
7392 | { |
7393 | /* Do we know the sibling already? */ | |
72bf9492 | 7394 | |
91c24f0a DC |
7395 | if (orig_pdi->sibling) |
7396 | return orig_pdi->sibling; | |
7397 | ||
7398 | /* Are there any children to deal with? */ | |
7399 | ||
7400 | if (!orig_pdi->has_children) | |
7401 | return info_ptr; | |
7402 | ||
4bb7a0a7 | 7403 | /* Skip the children the long way. */ |
91c24f0a | 7404 | |
dee91e82 | 7405 | return skip_children (reader, info_ptr); |
91c24f0a DC |
7406 | } |
7407 | ||
257e7a09 | 7408 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 7409 | not NULL. */ |
c906108c SS |
7410 | |
7411 | static void | |
257e7a09 YQ |
7412 | dwarf2_read_symtab (struct partial_symtab *self, |
7413 | struct objfile *objfile) | |
c906108c | 7414 | { |
257e7a09 | 7415 | if (self->readin) |
c906108c | 7416 | { |
442e4d9c | 7417 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 7418 | self->filename); |
442e4d9c YQ |
7419 | } |
7420 | else | |
7421 | { | |
7422 | if (info_verbose) | |
c906108c | 7423 | { |
442e4d9c | 7424 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 7425 | self->filename); |
442e4d9c | 7426 | gdb_flush (gdb_stdout); |
c906108c | 7427 | } |
c906108c | 7428 | |
442e4d9c YQ |
7429 | /* Restore our global data. */ |
7430 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10b3939b | 7431 | |
442e4d9c YQ |
7432 | /* If this psymtab is constructed from a debug-only objfile, the |
7433 | has_section_at_zero flag will not necessarily be correct. We | |
7434 | can get the correct value for this flag by looking at the data | |
7435 | associated with the (presumably stripped) associated objfile. */ | |
7436 | if (objfile->separate_debug_objfile_backlink) | |
7437 | { | |
7438 | struct dwarf2_per_objfile *dpo_backlink | |
7439 | = objfile_data (objfile->separate_debug_objfile_backlink, | |
7440 | dwarf2_objfile_data_key); | |
9a619af0 | 7441 | |
442e4d9c YQ |
7442 | dwarf2_per_objfile->has_section_at_zero |
7443 | = dpo_backlink->has_section_at_zero; | |
7444 | } | |
b2ab525c | 7445 | |
442e4d9c | 7446 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 7447 | |
257e7a09 | 7448 | psymtab_to_symtab_1 (self); |
c906108c | 7449 | |
442e4d9c YQ |
7450 | /* Finish up the debug error message. */ |
7451 | if (info_verbose) | |
7452 | printf_filtered (_("done.\n")); | |
c906108c | 7453 | } |
95554aad TT |
7454 | |
7455 | process_cu_includes (); | |
c906108c | 7456 | } |
9cdd5dbd DE |
7457 | \f |
7458 | /* Reading in full CUs. */ | |
c906108c | 7459 | |
10b3939b DJ |
7460 | /* Add PER_CU to the queue. */ |
7461 | ||
7462 | static void | |
95554aad TT |
7463 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7464 | enum language pretend_language) | |
10b3939b DJ |
7465 | { |
7466 | struct dwarf2_queue_item *item; | |
7467 | ||
7468 | per_cu->queued = 1; | |
7469 | item = xmalloc (sizeof (*item)); | |
7470 | item->per_cu = per_cu; | |
95554aad | 7471 | item->pretend_language = pretend_language; |
10b3939b DJ |
7472 | item->next = NULL; |
7473 | ||
7474 | if (dwarf2_queue == NULL) | |
7475 | dwarf2_queue = item; | |
7476 | else | |
7477 | dwarf2_queue_tail->next = item; | |
7478 | ||
7479 | dwarf2_queue_tail = item; | |
7480 | } | |
7481 | ||
89e63ee4 DE |
7482 | /* If PER_CU is not yet queued, add it to the queue. |
7483 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
7484 | dependency. | |
0907af0c | 7485 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
7486 | meaning either PER_CU is already queued or it is already loaded. |
7487 | ||
7488 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
7489 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
7490 | |
7491 | static int | |
89e63ee4 | 7492 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
7493 | struct dwarf2_per_cu_data *per_cu, |
7494 | enum language pretend_language) | |
7495 | { | |
7496 | /* We may arrive here during partial symbol reading, if we need full | |
7497 | DIEs to process an unusual case (e.g. template arguments). Do | |
7498 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
7499 | if (dwarf2_per_objfile->reading_partial_symbols) | |
7500 | { | |
7501 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
7502 | return 1; | |
7503 | return 0; | |
7504 | } | |
7505 | ||
7506 | /* Mark the dependence relation so that we don't flush PER_CU | |
7507 | too early. */ | |
89e63ee4 DE |
7508 | if (dependent_cu != NULL) |
7509 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
7510 | |
7511 | /* If it's already on the queue, we have nothing to do. */ | |
7512 | if (per_cu->queued) | |
7513 | return 0; | |
7514 | ||
7515 | /* If the compilation unit is already loaded, just mark it as | |
7516 | used. */ | |
7517 | if (per_cu->cu != NULL) | |
7518 | { | |
7519 | per_cu->cu->last_used = 0; | |
7520 | return 0; | |
7521 | } | |
7522 | ||
7523 | /* Add it to the queue. */ | |
7524 | queue_comp_unit (per_cu, pretend_language); | |
7525 | ||
7526 | return 1; | |
7527 | } | |
7528 | ||
10b3939b DJ |
7529 | /* Process the queue. */ |
7530 | ||
7531 | static void | |
a0f42c21 | 7532 | process_queue (void) |
10b3939b DJ |
7533 | { |
7534 | struct dwarf2_queue_item *item, *next_item; | |
7535 | ||
b4f54984 | 7536 | if (dwarf_read_debug) |
45cfd468 DE |
7537 | { |
7538 | fprintf_unfiltered (gdb_stdlog, | |
7539 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 7540 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
7541 | } |
7542 | ||
03dd20cc DJ |
7543 | /* The queue starts out with one item, but following a DIE reference |
7544 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
7545 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
7546 | { | |
9291a0cd | 7547 | if (dwarf2_per_objfile->using_index |
43f3e411 | 7548 | ? !item->per_cu->v.quick->compunit_symtab |
9291a0cd | 7549 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) |
f4dc4d17 DE |
7550 | { |
7551 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 7552 | unsigned int debug_print_threshold; |
247f5c4f | 7553 | char buf[100]; |
f4dc4d17 | 7554 | |
247f5c4f | 7555 | if (per_cu->is_debug_types) |
f4dc4d17 | 7556 | { |
247f5c4f DE |
7557 | struct signatured_type *sig_type = |
7558 | (struct signatured_type *) per_cu; | |
7559 | ||
7560 | sprintf (buf, "TU %s at offset 0x%x", | |
73be47f5 DE |
7561 | hex_string (sig_type->signature), |
7562 | per_cu->offset.sect_off); | |
7563 | /* There can be 100s of TUs. | |
7564 | Only print them in verbose mode. */ | |
7565 | debug_print_threshold = 2; | |
f4dc4d17 | 7566 | } |
247f5c4f | 7567 | else |
73be47f5 DE |
7568 | { |
7569 | sprintf (buf, "CU at offset 0x%x", per_cu->offset.sect_off); | |
7570 | debug_print_threshold = 1; | |
7571 | } | |
247f5c4f | 7572 | |
b4f54984 | 7573 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 7574 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
7575 | |
7576 | if (per_cu->is_debug_types) | |
7577 | process_full_type_unit (per_cu, item->pretend_language); | |
7578 | else | |
7579 | process_full_comp_unit (per_cu, item->pretend_language); | |
7580 | ||
b4f54984 | 7581 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 7582 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 7583 | } |
10b3939b DJ |
7584 | |
7585 | item->per_cu->queued = 0; | |
7586 | next_item = item->next; | |
7587 | xfree (item); | |
7588 | } | |
7589 | ||
7590 | dwarf2_queue_tail = NULL; | |
45cfd468 | 7591 | |
b4f54984 | 7592 | if (dwarf_read_debug) |
45cfd468 DE |
7593 | { |
7594 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 7595 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 7596 | } |
10b3939b DJ |
7597 | } |
7598 | ||
7599 | /* Free all allocated queue entries. This function only releases anything if | |
7600 | an error was thrown; if the queue was processed then it would have been | |
7601 | freed as we went along. */ | |
7602 | ||
7603 | static void | |
7604 | dwarf2_release_queue (void *dummy) | |
7605 | { | |
7606 | struct dwarf2_queue_item *item, *last; | |
7607 | ||
7608 | item = dwarf2_queue; | |
7609 | while (item) | |
7610 | { | |
7611 | /* Anything still marked queued is likely to be in an | |
7612 | inconsistent state, so discard it. */ | |
7613 | if (item->per_cu->queued) | |
7614 | { | |
7615 | if (item->per_cu->cu != NULL) | |
dee91e82 | 7616 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
7617 | item->per_cu->queued = 0; |
7618 | } | |
7619 | ||
7620 | last = item; | |
7621 | item = item->next; | |
7622 | xfree (last); | |
7623 | } | |
7624 | ||
7625 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
7626 | } | |
7627 | ||
7628 | /* Read in full symbols for PST, and anything it depends on. */ | |
7629 | ||
c906108c | 7630 | static void |
fba45db2 | 7631 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 7632 | { |
10b3939b | 7633 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
7634 | int i; |
7635 | ||
95554aad TT |
7636 | if (pst->readin) |
7637 | return; | |
7638 | ||
aaa75496 | 7639 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
7640 | if (!pst->dependencies[i]->readin |
7641 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
7642 | { |
7643 | /* Inform about additional files that need to be read in. */ | |
7644 | if (info_verbose) | |
7645 | { | |
a3f17187 | 7646 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
7647 | fputs_filtered (" ", gdb_stdout); |
7648 | wrap_here (""); | |
7649 | fputs_filtered ("and ", gdb_stdout); | |
7650 | wrap_here (""); | |
7651 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 7652 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
7653 | gdb_flush (gdb_stdout); |
7654 | } | |
7655 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
7656 | } | |
7657 | ||
e38df1d0 | 7658 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
7659 | |
7660 | if (per_cu == NULL) | |
aaa75496 JB |
7661 | { |
7662 | /* It's an include file, no symbols to read for it. | |
7663 | Everything is in the parent symtab. */ | |
7664 | pst->readin = 1; | |
7665 | return; | |
7666 | } | |
c906108c | 7667 | |
a0f42c21 | 7668 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
7669 | } |
7670 | ||
dee91e82 DE |
7671 | /* Trivial hash function for die_info: the hash value of a DIE |
7672 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 7673 | |
dee91e82 DE |
7674 | static hashval_t |
7675 | die_hash (const void *item) | |
10b3939b | 7676 | { |
dee91e82 | 7677 | const struct die_info *die = item; |
6502dd73 | 7678 | |
dee91e82 DE |
7679 | return die->offset.sect_off; |
7680 | } | |
63d06c5c | 7681 | |
dee91e82 DE |
7682 | /* Trivial comparison function for die_info structures: two DIEs |
7683 | are equal if they have the same offset. */ | |
98bfdba5 | 7684 | |
dee91e82 DE |
7685 | static int |
7686 | die_eq (const void *item_lhs, const void *item_rhs) | |
7687 | { | |
7688 | const struct die_info *die_lhs = item_lhs; | |
7689 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 7690 | |
dee91e82 DE |
7691 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
7692 | } | |
c906108c | 7693 | |
dee91e82 DE |
7694 | /* die_reader_func for load_full_comp_unit. |
7695 | This is identical to read_signatured_type_reader, | |
7696 | but is kept separate for now. */ | |
c906108c | 7697 | |
dee91e82 DE |
7698 | static void |
7699 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7700 | const gdb_byte *info_ptr, |
dee91e82 DE |
7701 | struct die_info *comp_unit_die, |
7702 | int has_children, | |
7703 | void *data) | |
7704 | { | |
7705 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 7706 | enum language *language_ptr = data; |
6caca83c | 7707 | |
dee91e82 DE |
7708 | gdb_assert (cu->die_hash == NULL); |
7709 | cu->die_hash = | |
7710 | htab_create_alloc_ex (cu->header.length / 12, | |
7711 | die_hash, | |
7712 | die_eq, | |
7713 | NULL, | |
7714 | &cu->comp_unit_obstack, | |
7715 | hashtab_obstack_allocate, | |
7716 | dummy_obstack_deallocate); | |
e142c38c | 7717 | |
dee91e82 DE |
7718 | if (has_children) |
7719 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
7720 | &info_ptr, comp_unit_die); | |
7721 | cu->dies = comp_unit_die; | |
7722 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
7723 | |
7724 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 7725 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 7726 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
7727 | or we won't be able to build types correctly. |
7728 | Similarly, if we do not read the producer, we can not apply | |
7729 | producer-specific interpretation. */ | |
95554aad | 7730 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 7731 | } |
10b3939b | 7732 | |
dee91e82 | 7733 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 7734 | |
dee91e82 | 7735 | static void |
95554aad TT |
7736 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
7737 | enum language pretend_language) | |
dee91e82 | 7738 | { |
3019eac3 | 7739 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 7740 | |
f4dc4d17 DE |
7741 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
7742 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
7743 | } |
7744 | ||
3da10d80 KS |
7745 | /* Add a DIE to the delayed physname list. */ |
7746 | ||
7747 | static void | |
7748 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
7749 | const char *name, struct die_info *die, | |
7750 | struct dwarf2_cu *cu) | |
7751 | { | |
7752 | struct delayed_method_info mi; | |
7753 | mi.type = type; | |
7754 | mi.fnfield_index = fnfield_index; | |
7755 | mi.index = index; | |
7756 | mi.name = name; | |
7757 | mi.die = die; | |
7758 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
7759 | } | |
7760 | ||
7761 | /* A cleanup for freeing the delayed method list. */ | |
7762 | ||
7763 | static void | |
7764 | free_delayed_list (void *ptr) | |
7765 | { | |
7766 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
7767 | if (cu->method_list != NULL) | |
7768 | { | |
7769 | VEC_free (delayed_method_info, cu->method_list); | |
7770 | cu->method_list = NULL; | |
7771 | } | |
7772 | } | |
7773 | ||
7774 | /* Compute the physnames of any methods on the CU's method list. | |
7775 | ||
7776 | The computation of method physnames is delayed in order to avoid the | |
7777 | (bad) condition that one of the method's formal parameters is of an as yet | |
7778 | incomplete type. */ | |
7779 | ||
7780 | static void | |
7781 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
7782 | { | |
7783 | int i; | |
7784 | struct delayed_method_info *mi; | |
7785 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
7786 | { | |
1d06ead6 | 7787 | const char *physname; |
3da10d80 KS |
7788 | struct fn_fieldlist *fn_flp |
7789 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 7790 | physname = dwarf2_physname (mi->name, mi->die, cu); |
005e54bb DE |
7791 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi->index) |
7792 | = physname ? physname : ""; | |
3da10d80 KS |
7793 | } |
7794 | } | |
7795 | ||
a766d390 DE |
7796 | /* Go objects should be embedded in a DW_TAG_module DIE, |
7797 | and it's not clear if/how imported objects will appear. | |
7798 | To keep Go support simple until that's worked out, | |
7799 | go back through what we've read and create something usable. | |
7800 | We could do this while processing each DIE, and feels kinda cleaner, | |
7801 | but that way is more invasive. | |
7802 | This is to, for example, allow the user to type "p var" or "b main" | |
7803 | without having to specify the package name, and allow lookups | |
7804 | of module.object to work in contexts that use the expression | |
7805 | parser. */ | |
7806 | ||
7807 | static void | |
7808 | fixup_go_packaging (struct dwarf2_cu *cu) | |
7809 | { | |
7810 | char *package_name = NULL; | |
7811 | struct pending *list; | |
7812 | int i; | |
7813 | ||
7814 | for (list = global_symbols; list != NULL; list = list->next) | |
7815 | { | |
7816 | for (i = 0; i < list->nsyms; ++i) | |
7817 | { | |
7818 | struct symbol *sym = list->symbol[i]; | |
7819 | ||
7820 | if (SYMBOL_LANGUAGE (sym) == language_go | |
7821 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
7822 | { | |
7823 | char *this_package_name = go_symbol_package_name (sym); | |
7824 | ||
7825 | if (this_package_name == NULL) | |
7826 | continue; | |
7827 | if (package_name == NULL) | |
7828 | package_name = this_package_name; | |
7829 | else | |
7830 | { | |
7831 | if (strcmp (package_name, this_package_name) != 0) | |
7832 | complaint (&symfile_complaints, | |
7833 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
7834 | (symbol_symtab (sym) != NULL |
7835 | ? symtab_to_filename_for_display | |
7836 | (symbol_symtab (sym)) | |
4262abfb | 7837 | : objfile_name (cu->objfile)), |
a766d390 DE |
7838 | this_package_name, package_name); |
7839 | xfree (this_package_name); | |
7840 | } | |
7841 | } | |
7842 | } | |
7843 | } | |
7844 | ||
7845 | if (package_name != NULL) | |
7846 | { | |
7847 | struct objfile *objfile = cu->objfile; | |
34a68019 TT |
7848 | const char *saved_package_name |
7849 | = obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
7850 | package_name, | |
7851 | strlen (package_name)); | |
a766d390 | 7852 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, |
86f62fd7 | 7853 | saved_package_name, objfile); |
a766d390 DE |
7854 | struct symbol *sym; |
7855 | ||
7856 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7857 | ||
e623cf5d | 7858 | sym = allocate_symbol (objfile); |
f85f34ed | 7859 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
7860 | SYMBOL_SET_NAMES (sym, saved_package_name, |
7861 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
7862 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
7863 | e.g., "main" finds the "main" module and not C's main(). */ | |
7864 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 7865 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
7866 | SYMBOL_TYPE (sym) = type; |
7867 | ||
7868 | add_symbol_to_list (sym, &global_symbols); | |
7869 | ||
7870 | xfree (package_name); | |
7871 | } | |
7872 | } | |
7873 | ||
95554aad TT |
7874 | /* Return the symtab for PER_CU. This works properly regardless of |
7875 | whether we're using the index or psymtabs. */ | |
7876 | ||
43f3e411 DE |
7877 | static struct compunit_symtab * |
7878 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad TT |
7879 | { |
7880 | return (dwarf2_per_objfile->using_index | |
43f3e411 DE |
7881 | ? per_cu->v.quick->compunit_symtab |
7882 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
7883 | } |
7884 | ||
7885 | /* A helper function for computing the list of all symbol tables | |
7886 | included by PER_CU. */ | |
7887 | ||
7888 | static void | |
43f3e411 | 7889 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 7890 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 7891 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 7892 | struct compunit_symtab *immediate_parent) |
95554aad TT |
7893 | { |
7894 | void **slot; | |
7895 | int ix; | |
43f3e411 | 7896 | struct compunit_symtab *cust; |
95554aad TT |
7897 | struct dwarf2_per_cu_data *iter; |
7898 | ||
7899 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
7900 | if (*slot != NULL) | |
7901 | { | |
7902 | /* This inclusion and its children have been processed. */ | |
7903 | return; | |
7904 | } | |
7905 | ||
7906 | *slot = per_cu; | |
7907 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
7908 | cust = get_compunit_symtab (per_cu); |
7909 | if (cust != NULL) | |
ec94af83 DE |
7910 | { |
7911 | /* If this is a type unit only add its symbol table if we haven't | |
7912 | seen it yet (type unit per_cu's can share symtabs). */ | |
7913 | if (per_cu->is_debug_types) | |
7914 | { | |
43f3e411 | 7915 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
7916 | if (*slot == NULL) |
7917 | { | |
43f3e411 DE |
7918 | *slot = cust; |
7919 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
7920 | if (cust->user == NULL) | |
7921 | cust->user = immediate_parent; | |
ec94af83 DE |
7922 | } |
7923 | } | |
7924 | else | |
f9125b6c | 7925 | { |
43f3e411 DE |
7926 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
7927 | if (cust->user == NULL) | |
7928 | cust->user = immediate_parent; | |
f9125b6c | 7929 | } |
ec94af83 | 7930 | } |
95554aad TT |
7931 | |
7932 | for (ix = 0; | |
796a7ff8 | 7933 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 7934 | ++ix) |
ec94af83 DE |
7935 | { |
7936 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 7937 | all_type_symtabs, iter, cust); |
ec94af83 | 7938 | } |
95554aad TT |
7939 | } |
7940 | ||
43f3e411 | 7941 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
7942 | PER_CU. */ |
7943 | ||
7944 | static void | |
43f3e411 | 7945 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 7946 | { |
f4dc4d17 DE |
7947 | gdb_assert (! per_cu->is_debug_types); |
7948 | ||
796a7ff8 | 7949 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
7950 | { |
7951 | int ix, len; | |
ec94af83 | 7952 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
7953 | struct compunit_symtab *compunit_symtab_iter; |
7954 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 7955 | htab_t all_children, all_type_symtabs; |
43f3e411 | 7956 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
7957 | |
7958 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 7959 | if (cust == NULL) |
95554aad TT |
7960 | return; |
7961 | ||
7962 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
7963 | NULL, xcalloc, xfree); | |
ec94af83 DE |
7964 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
7965 | NULL, xcalloc, xfree); | |
95554aad TT |
7966 | |
7967 | for (ix = 0; | |
796a7ff8 | 7968 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 7969 | ix, per_cu_iter); |
95554aad | 7970 | ++ix) |
ec94af83 DE |
7971 | { |
7972 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 7973 | all_type_symtabs, per_cu_iter, |
43f3e411 | 7974 | cust); |
ec94af83 | 7975 | } |
95554aad | 7976 | |
ec94af83 | 7977 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
7978 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
7979 | cust->includes | |
95554aad TT |
7980 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, |
7981 | (len + 1) * sizeof (struct symtab *)); | |
7982 | for (ix = 0; | |
43f3e411 DE |
7983 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
7984 | compunit_symtab_iter); | |
95554aad | 7985 | ++ix) |
43f3e411 DE |
7986 | cust->includes[ix] = compunit_symtab_iter; |
7987 | cust->includes[len] = NULL; | |
95554aad | 7988 | |
43f3e411 | 7989 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 7990 | htab_delete (all_children); |
ec94af83 | 7991 | htab_delete (all_type_symtabs); |
95554aad TT |
7992 | } |
7993 | } | |
7994 | ||
7995 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
7996 | read. */ | |
7997 | ||
7998 | static void | |
7999 | process_cu_includes (void) | |
8000 | { | |
8001 | int ix; | |
8002 | struct dwarf2_per_cu_data *iter; | |
8003 | ||
8004 | for (ix = 0; | |
8005 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
8006 | ix, iter); | |
8007 | ++ix) | |
f4dc4d17 DE |
8008 | { |
8009 | if (! iter->is_debug_types) | |
43f3e411 | 8010 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 8011 | } |
95554aad TT |
8012 | |
8013 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
8014 | } | |
8015 | ||
9cdd5dbd | 8016 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
8017 | already been loaded into memory. */ |
8018 | ||
8019 | static void | |
95554aad TT |
8020 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8021 | enum language pretend_language) | |
10b3939b | 8022 | { |
10b3939b | 8023 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 8024 | struct objfile *objfile = per_cu->objfile; |
3e29f34a | 8025 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 8026 | CORE_ADDR lowpc, highpc; |
43f3e411 | 8027 | struct compunit_symtab *cust; |
3da10d80 | 8028 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 8029 | CORE_ADDR baseaddr; |
4359dff1 | 8030 | struct block *static_block; |
3e29f34a | 8031 | CORE_ADDR addr; |
10b3939b DJ |
8032 | |
8033 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8034 | ||
10b3939b DJ |
8035 | buildsym_init (); |
8036 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 8037 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
8038 | |
8039 | cu->list_in_scope = &file_symbols; | |
c906108c | 8040 | |
95554aad TT |
8041 | cu->language = pretend_language; |
8042 | cu->language_defn = language_def (cu->language); | |
8043 | ||
c906108c | 8044 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 8045 | process_die (cu->dies, cu); |
c906108c | 8046 | |
a766d390 DE |
8047 | /* For now fudge the Go package. */ |
8048 | if (cu->language == language_go) | |
8049 | fixup_go_packaging (cu); | |
8050 | ||
3da10d80 KS |
8051 | /* Now that we have processed all the DIEs in the CU, all the types |
8052 | should be complete, and it should now be safe to compute all of the | |
8053 | physnames. */ | |
8054 | compute_delayed_physnames (cu); | |
8055 | do_cleanups (delayed_list_cleanup); | |
8056 | ||
fae299cd DC |
8057 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
8058 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
8059 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 8060 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 8061 | |
3e29f34a MR |
8062 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
8063 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
8064 | |
8065 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
8066 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
8067 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
8068 | addrmap to help ensure it has an accurate map of pc values belonging to | |
8069 | this comp unit. */ | |
8070 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
8071 | ||
43f3e411 DE |
8072 | cust = end_symtab_from_static_block (static_block, |
8073 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 8074 | |
43f3e411 | 8075 | if (cust != NULL) |
c906108c | 8076 | { |
df15bd07 | 8077 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 8078 | |
8be455d7 JK |
8079 | /* Set symtab language to language from DW_AT_language. If the |
8080 | compilation is from a C file generated by language preprocessors, do | |
8081 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 DE |
8082 | if (!(cu->language == language_c |
8083 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
8084 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
8be455d7 JK |
8085 | |
8086 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
8087 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
8088 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
8089 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
8090 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
8091 | |
8092 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
8093 | needed, it would be wrong due to missing DW_AT_producer there. | |
8094 | ||
8095 | Still one can confuse GDB by using non-standard GCC compilation | |
8096 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
8097 | */ | |
ab260dad | 8098 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 8099 | cust->locations_valid = 1; |
e0d00bc7 JK |
8100 | |
8101 | if (gcc_4_minor >= 5) | |
43f3e411 | 8102 | cust->epilogue_unwind_valid = 1; |
96408a79 | 8103 | |
43f3e411 | 8104 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 8105 | } |
9291a0cd TT |
8106 | |
8107 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8108 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
8109 | else |
8110 | { | |
8111 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8112 | pst->compunit_symtab = cust; |
9291a0cd TT |
8113 | pst->readin = 1; |
8114 | } | |
c906108c | 8115 | |
95554aad TT |
8116 | /* Push it for inclusion processing later. */ |
8117 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
8118 | ||
c906108c | 8119 | do_cleanups (back_to); |
f4dc4d17 | 8120 | } |
45cfd468 | 8121 | |
f4dc4d17 DE |
8122 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
8123 | already been loaded into memory. */ | |
8124 | ||
8125 | static void | |
8126 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
8127 | enum language pretend_language) | |
8128 | { | |
8129 | struct dwarf2_cu *cu = per_cu->cu; | |
8130 | struct objfile *objfile = per_cu->objfile; | |
43f3e411 | 8131 | struct compunit_symtab *cust; |
f4dc4d17 | 8132 | struct cleanup *back_to, *delayed_list_cleanup; |
0186c6a7 DE |
8133 | struct signatured_type *sig_type; |
8134 | ||
8135 | gdb_assert (per_cu->is_debug_types); | |
8136 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8137 | |
8138 | buildsym_init (); | |
8139 | back_to = make_cleanup (really_free_pendings, NULL); | |
8140 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
8141 | ||
8142 | cu->list_in_scope = &file_symbols; | |
8143 | ||
8144 | cu->language = pretend_language; | |
8145 | cu->language_defn = language_def (cu->language); | |
8146 | ||
8147 | /* The symbol tables are set up in read_type_unit_scope. */ | |
8148 | process_die (cu->dies, cu); | |
8149 | ||
8150 | /* For now fudge the Go package. */ | |
8151 | if (cu->language == language_go) | |
8152 | fixup_go_packaging (cu); | |
8153 | ||
8154 | /* Now that we have processed all the DIEs in the CU, all the types | |
8155 | should be complete, and it should now be safe to compute all of the | |
8156 | physnames. */ | |
8157 | compute_delayed_physnames (cu); | |
8158 | do_cleanups (delayed_list_cleanup); | |
8159 | ||
8160 | /* TUs share symbol tables. | |
8161 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
8162 | of it with end_expandable_symtab. Otherwise, complete the addition of |
8163 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 8164 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 8165 | { |
43f3e411 DE |
8166 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
8167 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 8168 | |
43f3e411 | 8169 | if (cust != NULL) |
f4dc4d17 DE |
8170 | { |
8171 | /* Set symtab language to language from DW_AT_language. If the | |
8172 | compilation is from a C file generated by language preprocessors, | |
8173 | do not set the language if it was already deduced by | |
8174 | start_subfile. */ | |
43f3e411 DE |
8175 | if (!(cu->language == language_c |
8176 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
8177 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
8178 | } |
8179 | } | |
8180 | else | |
8181 | { | |
0ab9ce85 | 8182 | augment_type_symtab (); |
43f3e411 | 8183 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
8184 | } |
8185 | ||
8186 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8187 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
8188 | else |
8189 | { | |
8190 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8191 | pst->compunit_symtab = cust; |
f4dc4d17 | 8192 | pst->readin = 1; |
45cfd468 | 8193 | } |
f4dc4d17 DE |
8194 | |
8195 | do_cleanups (back_to); | |
c906108c SS |
8196 | } |
8197 | ||
95554aad TT |
8198 | /* Process an imported unit DIE. */ |
8199 | ||
8200 | static void | |
8201 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
8202 | { | |
8203 | struct attribute *attr; | |
8204 | ||
f4dc4d17 DE |
8205 | /* For now we don't handle imported units in type units. */ |
8206 | if (cu->per_cu->is_debug_types) | |
8207 | { | |
8208 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8209 | " supported in type units [in module %s]"), | |
4262abfb | 8210 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
8211 | } |
8212 | ||
95554aad TT |
8213 | attr = dwarf2_attr (die, DW_AT_import, cu); |
8214 | if (attr != NULL) | |
8215 | { | |
8216 | struct dwarf2_per_cu_data *per_cu; | |
8217 | struct symtab *imported_symtab; | |
8218 | sect_offset offset; | |
36586728 | 8219 | int is_dwz; |
95554aad TT |
8220 | |
8221 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
8222 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
8223 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad | 8224 | |
69d751e3 | 8225 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
8226 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
8227 | load_full_comp_unit (per_cu, cu->language); | |
8228 | ||
796a7ff8 | 8229 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
8230 | per_cu); |
8231 | } | |
8232 | } | |
8233 | ||
adde2bff DE |
8234 | /* Reset the in_process bit of a die. */ |
8235 | ||
8236 | static void | |
8237 | reset_die_in_process (void *arg) | |
8238 | { | |
8239 | struct die_info *die = arg; | |
8c3cb9fa | 8240 | |
adde2bff DE |
8241 | die->in_process = 0; |
8242 | } | |
8243 | ||
c906108c SS |
8244 | /* Process a die and its children. */ |
8245 | ||
8246 | static void | |
e7c27a73 | 8247 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8248 | { |
adde2bff DE |
8249 | struct cleanup *in_process; |
8250 | ||
8251 | /* We should only be processing those not already in process. */ | |
8252 | gdb_assert (!die->in_process); | |
8253 | ||
8254 | die->in_process = 1; | |
8255 | in_process = make_cleanup (reset_die_in_process,die); | |
8256 | ||
c906108c SS |
8257 | switch (die->tag) |
8258 | { | |
8259 | case DW_TAG_padding: | |
8260 | break; | |
8261 | case DW_TAG_compile_unit: | |
95554aad | 8262 | case DW_TAG_partial_unit: |
e7c27a73 | 8263 | read_file_scope (die, cu); |
c906108c | 8264 | break; |
348e048f DE |
8265 | case DW_TAG_type_unit: |
8266 | read_type_unit_scope (die, cu); | |
8267 | break; | |
c906108c | 8268 | case DW_TAG_subprogram: |
c906108c | 8269 | case DW_TAG_inlined_subroutine: |
edb3359d | 8270 | read_func_scope (die, cu); |
c906108c SS |
8271 | break; |
8272 | case DW_TAG_lexical_block: | |
14898363 L |
8273 | case DW_TAG_try_block: |
8274 | case DW_TAG_catch_block: | |
e7c27a73 | 8275 | read_lexical_block_scope (die, cu); |
c906108c | 8276 | break; |
96408a79 SA |
8277 | case DW_TAG_GNU_call_site: |
8278 | read_call_site_scope (die, cu); | |
8279 | break; | |
c906108c | 8280 | case DW_TAG_class_type: |
680b30c7 | 8281 | case DW_TAG_interface_type: |
c906108c SS |
8282 | case DW_TAG_structure_type: |
8283 | case DW_TAG_union_type: | |
134d01f1 | 8284 | process_structure_scope (die, cu); |
c906108c SS |
8285 | break; |
8286 | case DW_TAG_enumeration_type: | |
134d01f1 | 8287 | process_enumeration_scope (die, cu); |
c906108c | 8288 | break; |
134d01f1 | 8289 | |
f792889a DJ |
8290 | /* These dies have a type, but processing them does not create |
8291 | a symbol or recurse to process the children. Therefore we can | |
8292 | read them on-demand through read_type_die. */ | |
c906108c | 8293 | case DW_TAG_subroutine_type: |
72019c9c | 8294 | case DW_TAG_set_type: |
c906108c | 8295 | case DW_TAG_array_type: |
c906108c | 8296 | case DW_TAG_pointer_type: |
c906108c | 8297 | case DW_TAG_ptr_to_member_type: |
c906108c | 8298 | case DW_TAG_reference_type: |
c906108c | 8299 | case DW_TAG_string_type: |
c906108c | 8300 | break; |
134d01f1 | 8301 | |
c906108c | 8302 | case DW_TAG_base_type: |
a02abb62 | 8303 | case DW_TAG_subrange_type: |
cb249c71 | 8304 | case DW_TAG_typedef: |
134d01f1 DJ |
8305 | /* Add a typedef symbol for the type definition, if it has a |
8306 | DW_AT_name. */ | |
f792889a | 8307 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 8308 | break; |
c906108c | 8309 | case DW_TAG_common_block: |
e7c27a73 | 8310 | read_common_block (die, cu); |
c906108c SS |
8311 | break; |
8312 | case DW_TAG_common_inclusion: | |
8313 | break; | |
d9fa45fe | 8314 | case DW_TAG_namespace: |
4d4ec4e5 | 8315 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 8316 | read_namespace (die, cu); |
d9fa45fe | 8317 | break; |
5d7cb8df | 8318 | case DW_TAG_module: |
4d4ec4e5 | 8319 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
8320 | read_module (die, cu); |
8321 | break; | |
d9fa45fe | 8322 | case DW_TAG_imported_declaration: |
74921315 KS |
8323 | cu->processing_has_namespace_info = 1; |
8324 | if (read_namespace_alias (die, cu)) | |
8325 | break; | |
8326 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 8327 | case DW_TAG_imported_module: |
4d4ec4e5 | 8328 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
8329 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
8330 | || cu->language != language_fortran)) | |
8331 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
8332 | dwarf_tag_name (die->tag)); | |
8333 | read_import_statement (die, cu); | |
d9fa45fe | 8334 | break; |
95554aad TT |
8335 | |
8336 | case DW_TAG_imported_unit: | |
8337 | process_imported_unit_die (die, cu); | |
8338 | break; | |
8339 | ||
c906108c | 8340 | default: |
e7c27a73 | 8341 | new_symbol (die, NULL, cu); |
c906108c SS |
8342 | break; |
8343 | } | |
adde2bff DE |
8344 | |
8345 | do_cleanups (in_process); | |
c906108c | 8346 | } |
ca69b9e6 DE |
8347 | \f |
8348 | /* DWARF name computation. */ | |
c906108c | 8349 | |
94af9270 KS |
8350 | /* A helper function for dwarf2_compute_name which determines whether DIE |
8351 | needs to have the name of the scope prepended to the name listed in the | |
8352 | die. */ | |
8353 | ||
8354 | static int | |
8355 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8356 | { | |
1c809c68 TT |
8357 | struct attribute *attr; |
8358 | ||
94af9270 KS |
8359 | switch (die->tag) |
8360 | { | |
8361 | case DW_TAG_namespace: | |
8362 | case DW_TAG_typedef: | |
8363 | case DW_TAG_class_type: | |
8364 | case DW_TAG_interface_type: | |
8365 | case DW_TAG_structure_type: | |
8366 | case DW_TAG_union_type: | |
8367 | case DW_TAG_enumeration_type: | |
8368 | case DW_TAG_enumerator: | |
8369 | case DW_TAG_subprogram: | |
08a76f8a | 8370 | case DW_TAG_inlined_subroutine: |
94af9270 | 8371 | case DW_TAG_member: |
74921315 | 8372 | case DW_TAG_imported_declaration: |
94af9270 KS |
8373 | return 1; |
8374 | ||
8375 | case DW_TAG_variable: | |
c2b0a229 | 8376 | case DW_TAG_constant: |
94af9270 KS |
8377 | /* We only need to prefix "globally" visible variables. These include |
8378 | any variable marked with DW_AT_external or any variable that | |
8379 | lives in a namespace. [Variables in anonymous namespaces | |
8380 | require prefixing, but they are not DW_AT_external.] */ | |
8381 | ||
8382 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
8383 | { | |
8384 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 8385 | |
94af9270 KS |
8386 | return die_needs_namespace (die_specification (die, &spec_cu), |
8387 | spec_cu); | |
8388 | } | |
8389 | ||
1c809c68 | 8390 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
8391 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
8392 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
8393 | return 0; |
8394 | /* A variable in a lexical block of some kind does not need a | |
8395 | namespace, even though in C++ such variables may be external | |
8396 | and have a mangled name. */ | |
8397 | if (die->parent->tag == DW_TAG_lexical_block | |
8398 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
8399 | || die->parent->tag == DW_TAG_catch_block |
8400 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
8401 | return 0; |
8402 | return 1; | |
94af9270 KS |
8403 | |
8404 | default: | |
8405 | return 0; | |
8406 | } | |
8407 | } | |
8408 | ||
98bfdba5 PA |
8409 | /* Retrieve the last character from a mem_file. */ |
8410 | ||
8411 | static void | |
8412 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
8413 | { | |
8414 | char *last_char_p = (char *) object; | |
8415 | ||
8416 | if (length > 0) | |
8417 | *last_char_p = buffer[length - 1]; | |
8418 | } | |
8419 | ||
94af9270 | 8420 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
8421 | compute the physname for the object, which include a method's: |
8422 | - formal parameters (C++/Java), | |
8423 | - receiver type (Go), | |
8424 | - return type (Java). | |
8425 | ||
8426 | The term "physname" is a bit confusing. | |
8427 | For C++, for example, it is the demangled name. | |
8428 | For Go, for example, it's the mangled name. | |
94af9270 | 8429 | |
af6b7be1 JB |
8430 | For Ada, return the DIE's linkage name rather than the fully qualified |
8431 | name. PHYSNAME is ignored.. | |
8432 | ||
94af9270 KS |
8433 | The result is allocated on the objfile_obstack and canonicalized. */ |
8434 | ||
8435 | static const char * | |
15d034d0 TT |
8436 | dwarf2_compute_name (const char *name, |
8437 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
8438 | int physname) |
8439 | { | |
bb5ed363 DE |
8440 | struct objfile *objfile = cu->objfile; |
8441 | ||
94af9270 KS |
8442 | if (name == NULL) |
8443 | name = dwarf2_name (die, cu); | |
8444 | ||
f55ee35c JK |
8445 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
8446 | compute it by typename_concat inside GDB. */ | |
8447 | if (cu->language == language_ada | |
8448 | || (cu->language == language_fortran && physname)) | |
8449 | { | |
8450 | /* For Ada unit, we prefer the linkage name over the name, as | |
8451 | the former contains the exported name, which the user expects | |
8452 | to be able to reference. Ideally, we want the user to be able | |
8453 | to reference this entity using either natural or linkage name, | |
8454 | but we haven't started looking at this enhancement yet. */ | |
8455 | struct attribute *attr; | |
8456 | ||
8457 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8458 | if (attr == NULL) | |
8459 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8460 | if (attr && DW_STRING (attr)) | |
8461 | return DW_STRING (attr); | |
8462 | } | |
8463 | ||
94af9270 KS |
8464 | /* These are the only languages we know how to qualify names in. */ |
8465 | if (name != NULL | |
f55ee35c | 8466 | && (cu->language == language_cplus || cu->language == language_java |
45280282 | 8467 | || cu->language == language_fortran || cu->language == language_d)) |
94af9270 KS |
8468 | { |
8469 | if (die_needs_namespace (die, cu)) | |
8470 | { | |
8471 | long length; | |
0d5cff50 | 8472 | const char *prefix; |
94af9270 | 8473 | struct ui_file *buf; |
34a68019 TT |
8474 | char *intermediate_name; |
8475 | const char *canonical_name = NULL; | |
94af9270 KS |
8476 | |
8477 | prefix = determine_prefix (die, cu); | |
8478 | buf = mem_fileopen (); | |
8479 | if (*prefix != '\0') | |
8480 | { | |
f55ee35c JK |
8481 | char *prefixed_name = typename_concat (NULL, prefix, name, |
8482 | physname, cu); | |
9a619af0 | 8483 | |
94af9270 KS |
8484 | fputs_unfiltered (prefixed_name, buf); |
8485 | xfree (prefixed_name); | |
8486 | } | |
8487 | else | |
62d5b8da | 8488 | fputs_unfiltered (name, buf); |
94af9270 | 8489 | |
98bfdba5 PA |
8490 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
8491 | as children with DW_TAG_template_type_param or | |
8492 | DW_TAG_value_type_param. If the latter, add them to the name | |
8493 | here. If the name already has template parameters, then | |
8494 | skip this step; some versions of GCC emit both, and | |
8495 | it is more efficient to use the pre-computed name. | |
8496 | ||
8497 | Something to keep in mind about this process: it is very | |
8498 | unlikely, or in some cases downright impossible, to produce | |
8499 | something that will match the mangled name of a function. | |
8500 | If the definition of the function has the same debug info, | |
8501 | we should be able to match up with it anyway. But fallbacks | |
8502 | using the minimal symbol, for instance to find a method | |
8503 | implemented in a stripped copy of libstdc++, will not work. | |
8504 | If we do not have debug info for the definition, we will have to | |
8505 | match them up some other way. | |
8506 | ||
8507 | When we do name matching there is a related problem with function | |
8508 | templates; two instantiated function templates are allowed to | |
8509 | differ only by their return types, which we do not add here. */ | |
8510 | ||
8511 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
8512 | { | |
8513 | struct attribute *attr; | |
8514 | struct die_info *child; | |
8515 | int first = 1; | |
8516 | ||
8517 | die->building_fullname = 1; | |
8518 | ||
8519 | for (child = die->child; child != NULL; child = child->sibling) | |
8520 | { | |
8521 | struct type *type; | |
12df843f | 8522 | LONGEST value; |
d521ce57 | 8523 | const gdb_byte *bytes; |
98bfdba5 PA |
8524 | struct dwarf2_locexpr_baton *baton; |
8525 | struct value *v; | |
8526 | ||
8527 | if (child->tag != DW_TAG_template_type_param | |
8528 | && child->tag != DW_TAG_template_value_param) | |
8529 | continue; | |
8530 | ||
8531 | if (first) | |
8532 | { | |
8533 | fputs_unfiltered ("<", buf); | |
8534 | first = 0; | |
8535 | } | |
8536 | else | |
8537 | fputs_unfiltered (", ", buf); | |
8538 | ||
8539 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
8540 | if (attr == NULL) | |
8541 | { | |
8542 | complaint (&symfile_complaints, | |
8543 | _("template parameter missing DW_AT_type")); | |
8544 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
8545 | continue; | |
8546 | } | |
8547 | type = die_type (child, cu); | |
8548 | ||
8549 | if (child->tag == DW_TAG_template_type_param) | |
8550 | { | |
79d43c61 | 8551 | c_print_type (type, "", buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
8552 | continue; |
8553 | } | |
8554 | ||
8555 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
8556 | if (attr == NULL) | |
8557 | { | |
8558 | complaint (&symfile_complaints, | |
3e43a32a MS |
8559 | _("template parameter missing " |
8560 | "DW_AT_const_value")); | |
98bfdba5 PA |
8561 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
8562 | continue; | |
8563 | } | |
8564 | ||
8565 | dwarf2_const_value_attr (attr, type, name, | |
8566 | &cu->comp_unit_obstack, cu, | |
8567 | &value, &bytes, &baton); | |
8568 | ||
8569 | if (TYPE_NOSIGN (type)) | |
8570 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
8571 | changed, this can use value_print instead. */ | |
8572 | c_printchar (value, type, buf); | |
8573 | else | |
8574 | { | |
8575 | struct value_print_options opts; | |
8576 | ||
8577 | if (baton != NULL) | |
8578 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
8579 | baton->data, | |
8580 | baton->size, | |
8581 | baton->per_cu); | |
8582 | else if (bytes != NULL) | |
8583 | { | |
8584 | v = allocate_value (type); | |
8585 | memcpy (value_contents_writeable (v), bytes, | |
8586 | TYPE_LENGTH (type)); | |
8587 | } | |
8588 | else | |
8589 | v = value_from_longest (type, value); | |
8590 | ||
3e43a32a MS |
8591 | /* Specify decimal so that we do not depend on |
8592 | the radix. */ | |
98bfdba5 PA |
8593 | get_formatted_print_options (&opts, 'd'); |
8594 | opts.raw = 1; | |
8595 | value_print (v, buf, &opts); | |
8596 | release_value (v); | |
8597 | value_free (v); | |
8598 | } | |
8599 | } | |
8600 | ||
8601 | die->building_fullname = 0; | |
8602 | ||
8603 | if (!first) | |
8604 | { | |
8605 | /* Close the argument list, with a space if necessary | |
8606 | (nested templates). */ | |
8607 | char last_char = '\0'; | |
8608 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
8609 | if (last_char == '>') | |
8610 | fputs_unfiltered (" >", buf); | |
8611 | else | |
8612 | fputs_unfiltered (">", buf); | |
8613 | } | |
8614 | } | |
8615 | ||
94af9270 KS |
8616 | /* For Java and C++ methods, append formal parameter type |
8617 | information, if PHYSNAME. */ | |
6e70227d | 8618 | |
94af9270 KS |
8619 | if (physname && die->tag == DW_TAG_subprogram |
8620 | && (cu->language == language_cplus | |
8621 | || cu->language == language_java)) | |
8622 | { | |
8623 | struct type *type = read_type_die (die, cu); | |
8624 | ||
79d43c61 TT |
8625 | c_type_print_args (type, buf, 1, cu->language, |
8626 | &type_print_raw_options); | |
94af9270 KS |
8627 | |
8628 | if (cu->language == language_java) | |
8629 | { | |
8630 | /* For java, we must append the return type to method | |
0963b4bd | 8631 | names. */ |
94af9270 KS |
8632 | if (die->tag == DW_TAG_subprogram) |
8633 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
79d43c61 | 8634 | 0, 0, &type_print_raw_options); |
94af9270 KS |
8635 | } |
8636 | else if (cu->language == language_cplus) | |
8637 | { | |
60430eff DJ |
8638 | /* Assume that an artificial first parameter is |
8639 | "this", but do not crash if it is not. RealView | |
8640 | marks unnamed (and thus unused) parameters as | |
8641 | artificial; there is no way to differentiate | |
8642 | the two cases. */ | |
94af9270 KS |
8643 | if (TYPE_NFIELDS (type) > 0 |
8644 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 8645 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
8646 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
8647 | 0)))) | |
94af9270 KS |
8648 | fputs_unfiltered (" const", buf); |
8649 | } | |
8650 | } | |
8651 | ||
34a68019 | 8652 | intermediate_name = ui_file_xstrdup (buf, &length); |
94af9270 KS |
8653 | ui_file_delete (buf); |
8654 | ||
8655 | if (cu->language == language_cplus) | |
34a68019 TT |
8656 | canonical_name |
8657 | = dwarf2_canonicalize_name (intermediate_name, cu, | |
8658 | &objfile->per_bfd->storage_obstack); | |
8659 | ||
8660 | /* If we only computed INTERMEDIATE_NAME, or if | |
8661 | INTERMEDIATE_NAME is already canonical, then we need to | |
8662 | copy it to the appropriate obstack. */ | |
8663 | if (canonical_name == NULL || canonical_name == intermediate_name) | |
8664 | name = obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
8665 | intermediate_name, | |
8666 | strlen (intermediate_name)); | |
8667 | else | |
8668 | name = canonical_name; | |
9a619af0 | 8669 | |
34a68019 | 8670 | xfree (intermediate_name); |
94af9270 KS |
8671 | } |
8672 | } | |
8673 | ||
8674 | return name; | |
8675 | } | |
8676 | ||
0114d602 DJ |
8677 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
8678 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 8679 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
8680 | not have a name. NAME may either be from a previous call to |
8681 | dwarf2_name or NULL. | |
8682 | ||
0963b4bd | 8683 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
8684 | |
8685 | static const char * | |
15d034d0 | 8686 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 8687 | { |
94af9270 KS |
8688 | return dwarf2_compute_name (name, die, cu, 0); |
8689 | } | |
0114d602 | 8690 | |
94af9270 KS |
8691 | /* Construct a physname for the given DIE in CU. NAME may either be |
8692 | from a previous call to dwarf2_name or NULL. The result will be | |
8693 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
8694 | name. | |
0114d602 | 8695 | |
94af9270 | 8696 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 8697 | |
94af9270 | 8698 | static const char * |
15d034d0 | 8699 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 8700 | { |
bb5ed363 | 8701 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
8702 | struct attribute *attr; |
8703 | const char *retval, *mangled = NULL, *canon = NULL; | |
8704 | struct cleanup *back_to; | |
8705 | int need_copy = 1; | |
8706 | ||
8707 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
8708 | on its own. */ | |
8709 | if (!die_needs_namespace (die, cu)) | |
8710 | return dwarf2_compute_name (name, die, cu, 1); | |
8711 | ||
8712 | back_to = make_cleanup (null_cleanup, NULL); | |
8713 | ||
8714 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8715 | if (!attr) | |
8716 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8717 | ||
8718 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
8719 | has computed. */ | |
8720 | if (attr && DW_STRING (attr)) | |
8721 | { | |
8722 | char *demangled; | |
8723 | ||
8724 | mangled = DW_STRING (attr); | |
8725 | ||
8726 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
8727 | type. It is easier for GDB users to search for such functions as | |
8728 | `name(params)' than `long name(params)'. In such case the minimal | |
8729 | symbol names do not match the full symbol names but for template | |
8730 | functions there is never a need to look up their definition from their | |
8731 | declaration so the only disadvantage remains the minimal symbol | |
8732 | variant `long name(params)' does not have the proper inferior type. | |
8733 | */ | |
8734 | ||
a766d390 DE |
8735 | if (cu->language == language_go) |
8736 | { | |
8737 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
8738 | new_symbol_full assumes we return the mangled name. | |
8739 | This just undoes that lie until things are cleaned up. */ | |
8740 | demangled = NULL; | |
8741 | } | |
8742 | else | |
8743 | { | |
8de20a37 TT |
8744 | demangled = gdb_demangle (mangled, |
8745 | (DMGL_PARAMS | DMGL_ANSI | |
8746 | | (cu->language == language_java | |
8747 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
8748 | : DMGL_RET_DROP))); | |
a766d390 | 8749 | } |
900e11f9 JK |
8750 | if (demangled) |
8751 | { | |
8752 | make_cleanup (xfree, demangled); | |
8753 | canon = demangled; | |
8754 | } | |
8755 | else | |
8756 | { | |
8757 | canon = mangled; | |
8758 | need_copy = 0; | |
8759 | } | |
8760 | } | |
8761 | ||
8762 | if (canon == NULL || check_physname) | |
8763 | { | |
8764 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
8765 | ||
8766 | if (canon != NULL && strcmp (physname, canon) != 0) | |
8767 | { | |
8768 | /* It may not mean a bug in GDB. The compiler could also | |
8769 | compute DW_AT_linkage_name incorrectly. But in such case | |
8770 | GDB would need to be bug-to-bug compatible. */ | |
8771 | ||
8772 | complaint (&symfile_complaints, | |
8773 | _("Computed physname <%s> does not match demangled <%s> " | |
8774 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
4262abfb JK |
8775 | physname, canon, mangled, die->offset.sect_off, |
8776 | objfile_name (objfile)); | |
900e11f9 JK |
8777 | |
8778 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
8779 | is available here - over computed PHYSNAME. It is safer | |
8780 | against both buggy GDB and buggy compilers. */ | |
8781 | ||
8782 | retval = canon; | |
8783 | } | |
8784 | else | |
8785 | { | |
8786 | retval = physname; | |
8787 | need_copy = 0; | |
8788 | } | |
8789 | } | |
8790 | else | |
8791 | retval = canon; | |
8792 | ||
8793 | if (need_copy) | |
34a68019 TT |
8794 | retval = obstack_copy0 (&objfile->per_bfd->storage_obstack, |
8795 | retval, strlen (retval)); | |
900e11f9 JK |
8796 | |
8797 | do_cleanups (back_to); | |
8798 | return retval; | |
0114d602 DJ |
8799 | } |
8800 | ||
74921315 KS |
8801 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
8802 | a new symbol for it. | |
8803 | ||
8804 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
8805 | ||
8806 | static int | |
8807 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
8808 | { | |
8809 | struct attribute *attr; | |
8810 | ||
8811 | /* If the die does not have a name, this is not a namespace | |
8812 | alias. */ | |
8813 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8814 | if (attr != NULL) | |
8815 | { | |
8816 | int num; | |
8817 | struct die_info *d = die; | |
8818 | struct dwarf2_cu *imported_cu = cu; | |
8819 | ||
8820 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
8821 | keep inspecting DIEs until we hit the underlying import. */ | |
8822 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
8823 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
8824 | { | |
8825 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
8826 | if (attr == NULL) | |
8827 | break; | |
8828 | ||
8829 | d = follow_die_ref (d, attr, &imported_cu); | |
8830 | if (d->tag != DW_TAG_imported_declaration) | |
8831 | break; | |
8832 | } | |
8833 | ||
8834 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
8835 | { | |
8836 | complaint (&symfile_complaints, | |
8837 | _("DIE at 0x%x has too many recursively imported " | |
8838 | "declarations"), d->offset.sect_off); | |
8839 | return 0; | |
8840 | } | |
8841 | ||
8842 | if (attr != NULL) | |
8843 | { | |
8844 | struct type *type; | |
8845 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
8846 | ||
8847 | type = get_die_type_at_offset (offset, cu->per_cu); | |
8848 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
8849 | { | |
8850 | /* This declaration is a global namespace alias. Add | |
8851 | a symbol for it whose type is the aliased namespace. */ | |
8852 | new_symbol (die, type, cu); | |
8853 | return 1; | |
8854 | } | |
8855 | } | |
8856 | } | |
8857 | ||
8858 | return 0; | |
8859 | } | |
8860 | ||
27aa8d6a SW |
8861 | /* Read the import statement specified by the given die and record it. */ |
8862 | ||
8863 | static void | |
8864 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
8865 | { | |
bb5ed363 | 8866 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 8867 | struct attribute *import_attr; |
32019081 | 8868 | struct die_info *imported_die, *child_die; |
de4affc9 | 8869 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 8870 | const char *imported_name; |
794684b6 | 8871 | const char *imported_name_prefix; |
13387711 SW |
8872 | const char *canonical_name; |
8873 | const char *import_alias; | |
8874 | const char *imported_declaration = NULL; | |
794684b6 | 8875 | const char *import_prefix; |
32019081 JK |
8876 | VEC (const_char_ptr) *excludes = NULL; |
8877 | struct cleanup *cleanups; | |
13387711 | 8878 | |
27aa8d6a SW |
8879 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
8880 | if (import_attr == NULL) | |
8881 | { | |
8882 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8883 | dwarf_tag_name (die->tag)); | |
8884 | return; | |
8885 | } | |
8886 | ||
de4affc9 CC |
8887 | imported_cu = cu; |
8888 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
8889 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
8890 | if (imported_name == NULL) |
8891 | { | |
8892 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
8893 | ||
8894 | The import in the following code: | |
8895 | namespace A | |
8896 | { | |
8897 | typedef int B; | |
8898 | } | |
8899 | ||
8900 | int main () | |
8901 | { | |
8902 | using A::B; | |
8903 | B b; | |
8904 | return b; | |
8905 | } | |
8906 | ||
8907 | ... | |
8908 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
8909 | <52> DW_AT_decl_file : 1 | |
8910 | <53> DW_AT_decl_line : 6 | |
8911 | <54> DW_AT_import : <0x75> | |
8912 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
8913 | <59> DW_AT_name : B | |
8914 | <5b> DW_AT_decl_file : 1 | |
8915 | <5c> DW_AT_decl_line : 2 | |
8916 | <5d> DW_AT_type : <0x6e> | |
8917 | ... | |
8918 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
8919 | <76> DW_AT_byte_size : 4 | |
8920 | <77> DW_AT_encoding : 5 (signed) | |
8921 | ||
8922 | imports the wrong die ( 0x75 instead of 0x58 ). | |
8923 | This case will be ignored until the gcc bug is fixed. */ | |
8924 | return; | |
8925 | } | |
8926 | ||
82856980 SW |
8927 | /* Figure out the local name after import. */ |
8928 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 8929 | |
794684b6 SW |
8930 | /* Figure out where the statement is being imported to. */ |
8931 | import_prefix = determine_prefix (die, cu); | |
8932 | ||
8933 | /* Figure out what the scope of the imported die is and prepend it | |
8934 | to the name of the imported die. */ | |
de4affc9 | 8935 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 8936 | |
f55ee35c JK |
8937 | if (imported_die->tag != DW_TAG_namespace |
8938 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 8939 | { |
13387711 SW |
8940 | imported_declaration = imported_name; |
8941 | canonical_name = imported_name_prefix; | |
794684b6 | 8942 | } |
13387711 | 8943 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 8944 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
8945 | imported_name_prefix, |
8946 | (cu->language == language_d ? "." : "::"), | |
8947 | imported_name, (char *) NULL); | |
13387711 SW |
8948 | else |
8949 | canonical_name = imported_name; | |
794684b6 | 8950 | |
32019081 JK |
8951 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
8952 | ||
8953 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
8954 | for (child_die = die->child; child_die && child_die->tag; | |
8955 | child_die = sibling_die (child_die)) | |
8956 | { | |
8957 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
8958 | represented by an imported module entry with an import attribute | |
8959 | referring to the module and owned entries corresponding to those | |
8960 | entities that are renamed as part of being imported. */ | |
8961 | ||
8962 | if (child_die->tag != DW_TAG_imported_declaration) | |
8963 | { | |
8964 | complaint (&symfile_complaints, | |
8965 | _("child DW_TAG_imported_declaration expected " | |
8966 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 8967 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8968 | continue; |
8969 | } | |
8970 | ||
8971 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
8972 | if (import_attr == NULL) | |
8973 | { | |
8974 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8975 | dwarf_tag_name (child_die->tag)); | |
8976 | continue; | |
8977 | } | |
8978 | ||
8979 | imported_cu = cu; | |
8980 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
8981 | &imported_cu); | |
8982 | imported_name = dwarf2_name (imported_die, imported_cu); | |
8983 | if (imported_name == NULL) | |
8984 | { | |
8985 | complaint (&symfile_complaints, | |
8986 | _("child DW_TAG_imported_declaration has unknown " | |
8987 | "imported name - DIE at 0x%x [in module %s]"), | |
4262abfb | 8988 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8989 | continue; |
8990 | } | |
8991 | ||
8992 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
8993 | ||
8994 | process_die (child_die, cu); | |
8995 | } | |
8996 | ||
c0cc3a76 SW |
8997 | cp_add_using_directive (import_prefix, |
8998 | canonical_name, | |
8999 | import_alias, | |
13387711 | 9000 | imported_declaration, |
32019081 | 9001 | excludes, |
12aaed36 | 9002 | 0, |
bb5ed363 | 9003 | &objfile->objfile_obstack); |
32019081 JK |
9004 | |
9005 | do_cleanups (cleanups); | |
27aa8d6a SW |
9006 | } |
9007 | ||
f4dc4d17 | 9008 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 9009 | |
cb1df416 DJ |
9010 | static void |
9011 | free_cu_line_header (void *arg) | |
9012 | { | |
9013 | struct dwarf2_cu *cu = arg; | |
9014 | ||
9015 | free_line_header (cu->line_header); | |
9016 | cu->line_header = NULL; | |
9017 | } | |
9018 | ||
1b80a9fa JK |
9019 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
9020 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
9021 | this, it was first present in GCC release 4.3.0. */ | |
9022 | ||
9023 | static int | |
9024 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
9025 | { | |
9026 | if (!cu->checked_producer) | |
9027 | check_producer (cu); | |
9028 | ||
9029 | return cu->producer_is_gcc_lt_4_3; | |
9030 | } | |
9031 | ||
9291a0cd TT |
9032 | static void |
9033 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 9034 | const char **name, const char **comp_dir) |
9291a0cd TT |
9035 | { |
9036 | struct attribute *attr; | |
9037 | ||
9038 | *name = NULL; | |
9039 | *comp_dir = NULL; | |
9040 | ||
9041 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
9042 | is not a source language identifier. */ | |
9043 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
9044 | if (attr) | |
9045 | { | |
9046 | *name = DW_STRING (attr); | |
9047 | } | |
9048 | ||
9049 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
9050 | if (attr) | |
9051 | *comp_dir = DW_STRING (attr); | |
1b80a9fa JK |
9052 | else if (producer_is_gcc_lt_4_3 (cu) && *name != NULL |
9053 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 9054 | { |
15d034d0 TT |
9055 | char *d = ldirname (*name); |
9056 | ||
9057 | *comp_dir = d; | |
9058 | if (d != NULL) | |
9059 | make_cleanup (xfree, d); | |
9291a0cd TT |
9060 | } |
9061 | if (*comp_dir != NULL) | |
9062 | { | |
9063 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
9064 | directory, get rid of it. */ | |
9065 | char *cp = strchr (*comp_dir, ':'); | |
9066 | ||
9067 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
9068 | *comp_dir = cp + 1; | |
9069 | } | |
9070 | ||
9071 | if (*name == NULL) | |
9072 | *name = "<unknown>"; | |
9073 | } | |
9074 | ||
f4dc4d17 DE |
9075 | /* Handle DW_AT_stmt_list for a compilation unit. |
9076 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
9077 | COMP_DIR is the compilation directory. LOWPC is passed to |
9078 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
9079 | |
9080 | static void | |
9081 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 9082 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 9083 | { |
527f3840 | 9084 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 9085 | struct attribute *attr; |
527f3840 JK |
9086 | unsigned int line_offset; |
9087 | struct line_header line_header_local; | |
9088 | hashval_t line_header_local_hash; | |
9089 | unsigned u; | |
9090 | void **slot; | |
9091 | int decode_mapping; | |
2ab95328 | 9092 | |
f4dc4d17 DE |
9093 | gdb_assert (! cu->per_cu->is_debug_types); |
9094 | ||
2ab95328 | 9095 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
9096 | if (attr == NULL) |
9097 | return; | |
9098 | ||
9099 | line_offset = DW_UNSND (attr); | |
9100 | ||
9101 | /* The line header hash table is only created if needed (it exists to | |
9102 | prevent redundant reading of the line table for partial_units). | |
9103 | If we're given a partial_unit, we'll need it. If we're given a | |
9104 | compile_unit, then use the line header hash table if it's already | |
9105 | created, but don't create one just yet. */ | |
9106 | ||
9107 | if (dwarf2_per_objfile->line_header_hash == NULL | |
9108 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 9109 | { |
527f3840 JK |
9110 | dwarf2_per_objfile->line_header_hash |
9111 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
9112 | line_header_eq_voidp, | |
9113 | free_line_header_voidp, | |
9114 | &objfile->objfile_obstack, | |
9115 | hashtab_obstack_allocate, | |
9116 | dummy_obstack_deallocate); | |
9117 | } | |
2ab95328 | 9118 | |
527f3840 JK |
9119 | line_header_local.offset.sect_off = line_offset; |
9120 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; | |
9121 | line_header_local_hash = line_header_hash (&line_header_local); | |
9122 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
9123 | { | |
9124 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9125 | &line_header_local, | |
9126 | line_header_local_hash, NO_INSERT); | |
9127 | ||
9128 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
9129 | is not present in *SLOT (since if there is something in *SLOT then | |
9130 | it will be for a partial_unit). */ | |
9131 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 9132 | { |
527f3840 JK |
9133 | gdb_assert (*slot != NULL); |
9134 | cu->line_header = *slot; | |
9135 | return; | |
dee91e82 | 9136 | } |
2ab95328 | 9137 | } |
527f3840 JK |
9138 | |
9139 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
9140 | We always have to call also dwarf_decode_lines for it. */ | |
9141 | cu->line_header = dwarf_decode_line_header (line_offset, cu); | |
9142 | if (cu->line_header == NULL) | |
9143 | return; | |
9144 | ||
9145 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
9146 | slot = NULL; | |
9147 | else | |
9148 | { | |
9149 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9150 | &line_header_local, | |
9151 | line_header_local_hash, INSERT); | |
9152 | gdb_assert (slot != NULL); | |
9153 | } | |
9154 | if (slot != NULL && *slot == NULL) | |
9155 | { | |
9156 | /* This newly decoded line number information unit will be owned | |
9157 | by line_header_hash hash table. */ | |
9158 | *slot = cu->line_header; | |
9159 | } | |
9160 | else | |
9161 | { | |
9162 | /* We cannot free any current entry in (*slot) as that struct line_header | |
9163 | may be already used by multiple CUs. Create only temporary decoded | |
9164 | line_header for this CU - it may happen at most once for each line | |
9165 | number information unit. And if we're not using line_header_hash | |
9166 | then this is what we want as well. */ | |
9167 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
9168 | make_cleanup (free_cu_line_header, cu); | |
9169 | } | |
9170 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
9171 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
9172 | decode_mapping); | |
2ab95328 TT |
9173 | } |
9174 | ||
95554aad | 9175 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 9176 | |
c906108c | 9177 | static void |
e7c27a73 | 9178 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9179 | { |
dee91e82 | 9180 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 9181 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
debd256d | 9182 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 9183 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
9184 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
9185 | struct attribute *attr; | |
15d034d0 TT |
9186 | const char *name = NULL; |
9187 | const char *comp_dir = NULL; | |
c906108c SS |
9188 | struct die_info *child_die; |
9189 | bfd *abfd = objfile->obfd; | |
e142c38c | 9190 | CORE_ADDR baseaddr; |
6e70227d | 9191 | |
e142c38c | 9192 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 9193 | |
fae299cd | 9194 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
9195 | |
9196 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
9197 | from finish_block. */ | |
2acceee2 | 9198 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 9199 | lowpc = highpc; |
3e29f34a | 9200 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 9201 | |
9291a0cd | 9202 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 9203 | |
95554aad | 9204 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 9205 | |
f4b8a18d KW |
9206 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
9207 | standardised yet. As a workaround for the language detection we fall | |
9208 | back to the DW_AT_producer string. */ | |
9209 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
9210 | cu->language = language_opencl; | |
9211 | ||
3019eac3 DE |
9212 | /* Similar hack for Go. */ |
9213 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
9214 | set_cu_language (DW_LANG_Go, cu); | |
9215 | ||
f4dc4d17 | 9216 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
9217 | |
9218 | /* Decode line number information if present. We do this before | |
9219 | processing child DIEs, so that the line header table is available | |
9220 | for DW_AT_decl_file. */ | |
c3b7b696 | 9221 | handle_DW_AT_stmt_list (die, cu, comp_dir, lowpc); |
3019eac3 DE |
9222 | |
9223 | /* Process all dies in compilation unit. */ | |
9224 | if (die->child != NULL) | |
9225 | { | |
9226 | child_die = die->child; | |
9227 | while (child_die && child_die->tag) | |
9228 | { | |
9229 | process_die (child_die, cu); | |
9230 | child_die = sibling_die (child_die); | |
9231 | } | |
9232 | } | |
9233 | ||
9234 | /* Decode macro information, if present. Dwarf 2 macro information | |
9235 | refers to information in the line number info statement program | |
9236 | header, so we can only read it if we've read the header | |
9237 | successfully. */ | |
9238 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
9239 | if (attr && cu->line_header) | |
9240 | { | |
9241 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
9242 | complaint (&symfile_complaints, | |
9243 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
9244 | ||
43f3e411 | 9245 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
9246 | } |
9247 | else | |
9248 | { | |
9249 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
9250 | if (attr && cu->line_header) | |
9251 | { | |
9252 | unsigned int macro_offset = DW_UNSND (attr); | |
9253 | ||
43f3e411 | 9254 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
9255 | } |
9256 | } | |
9257 | ||
9258 | do_cleanups (back_to); | |
9259 | } | |
9260 | ||
f4dc4d17 DE |
9261 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
9262 | Create the set of symtabs used by this TU, or if this TU is sharing | |
9263 | symtabs with another TU and the symtabs have already been created | |
9264 | then restore those symtabs in the line header. | |
9265 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
9266 | |
9267 | static void | |
f4dc4d17 | 9268 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 9269 | { |
f4dc4d17 DE |
9270 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9271 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
9272 | struct type_unit_group *tu_group; | |
9273 | int first_time; | |
9274 | struct line_header *lh; | |
3019eac3 | 9275 | struct attribute *attr; |
f4dc4d17 | 9276 | unsigned int i, line_offset; |
0186c6a7 | 9277 | struct signatured_type *sig_type; |
3019eac3 | 9278 | |
f4dc4d17 | 9279 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 9280 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 9281 | |
f4dc4d17 | 9282 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 9283 | |
f4dc4d17 | 9284 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 9285 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
9286 | if (sig_type->type_unit_group == NULL) |
9287 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
9288 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
9289 | |
9290 | /* If we've already processed this stmt_list there's no real need to | |
9291 | do it again, we could fake it and just recreate the part we need | |
9292 | (file name,index -> symtab mapping). If data shows this optimization | |
9293 | is useful we can do it then. */ | |
43f3e411 | 9294 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
9295 | |
9296 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
9297 | debug info. */ | |
9298 | lh = NULL; | |
9299 | if (attr != NULL) | |
3019eac3 | 9300 | { |
f4dc4d17 DE |
9301 | line_offset = DW_UNSND (attr); |
9302 | lh = dwarf_decode_line_header (line_offset, cu); | |
9303 | } | |
9304 | if (lh == NULL) | |
9305 | { | |
9306 | if (first_time) | |
9307 | dwarf2_start_symtab (cu, "", NULL, 0); | |
9308 | else | |
9309 | { | |
9310 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 9311 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 9312 | } |
f4dc4d17 | 9313 | return; |
3019eac3 DE |
9314 | } |
9315 | ||
f4dc4d17 DE |
9316 | cu->line_header = lh; |
9317 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 9318 | |
f4dc4d17 DE |
9319 | if (first_time) |
9320 | { | |
43f3e411 | 9321 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 9322 | |
f4dc4d17 DE |
9323 | tu_group->num_symtabs = lh->num_file_names; |
9324 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 9325 | |
f4dc4d17 DE |
9326 | for (i = 0; i < lh->num_file_names; ++i) |
9327 | { | |
d521ce57 | 9328 | const char *dir = NULL; |
f4dc4d17 | 9329 | struct file_entry *fe = &lh->file_names[i]; |
3019eac3 | 9330 | |
afa6c9ab | 9331 | if (fe->dir_index && lh->include_dirs != NULL) |
f4dc4d17 | 9332 | dir = lh->include_dirs[fe->dir_index - 1]; |
4d663531 | 9333 | dwarf2_start_subfile (fe->name, dir); |
3019eac3 | 9334 | |
f4dc4d17 DE |
9335 | if (current_subfile->symtab == NULL) |
9336 | { | |
9337 | /* NOTE: start_subfile will recognize when it's been passed | |
9338 | a file it has already seen. So we can't assume there's a | |
43f3e411 | 9339 | simple mapping from lh->file_names to subfiles, plus |
f4dc4d17 | 9340 | lh->file_names may contain dups. */ |
43f3e411 DE |
9341 | current_subfile->symtab |
9342 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
9343 | } |
9344 | ||
9345 | fe->symtab = current_subfile->symtab; | |
9346 | tu_group->symtabs[i] = fe->symtab; | |
9347 | } | |
9348 | } | |
9349 | else | |
3019eac3 | 9350 | { |
0ab9ce85 | 9351 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 DE |
9352 | |
9353 | for (i = 0; i < lh->num_file_names; ++i) | |
9354 | { | |
9355 | struct file_entry *fe = &lh->file_names[i]; | |
9356 | ||
9357 | fe->symtab = tu_group->symtabs[i]; | |
9358 | } | |
3019eac3 DE |
9359 | } |
9360 | ||
f4dc4d17 DE |
9361 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
9362 | so they don't have a "real" (so to speak) symtab anyway. | |
9363 | There is later code that will assign the main symtab to all symbols | |
9364 | that don't have one. We need to handle the case of a symbol with a | |
9365 | missing symtab (DW_AT_decl_file) anyway. */ | |
9366 | } | |
3019eac3 | 9367 | |
f4dc4d17 DE |
9368 | /* Process DW_TAG_type_unit. |
9369 | For TUs we want to skip the first top level sibling if it's not the | |
9370 | actual type being defined by this TU. In this case the first top | |
9371 | level sibling is there to provide context only. */ | |
3019eac3 | 9372 | |
f4dc4d17 DE |
9373 | static void |
9374 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9375 | { | |
9376 | struct die_info *child_die; | |
3019eac3 | 9377 | |
f4dc4d17 DE |
9378 | prepare_one_comp_unit (cu, die, language_minimal); |
9379 | ||
9380 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
9381 | We do this before processing child DIEs, so that the line header table | |
9382 | is available for DW_AT_decl_file. */ | |
9383 | setup_type_unit_groups (die, cu); | |
9384 | ||
9385 | if (die->child != NULL) | |
9386 | { | |
9387 | child_die = die->child; | |
9388 | while (child_die && child_die->tag) | |
9389 | { | |
9390 | process_die (child_die, cu); | |
9391 | child_die = sibling_die (child_die); | |
9392 | } | |
9393 | } | |
3019eac3 DE |
9394 | } |
9395 | \f | |
80626a55 DE |
9396 | /* DWO/DWP files. |
9397 | ||
9398 | http://gcc.gnu.org/wiki/DebugFission | |
9399 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
9400 | ||
9401 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
9402 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
9403 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
9404 | |
9405 | static hashval_t | |
9406 | hash_dwo_file (const void *item) | |
9407 | { | |
9408 | const struct dwo_file *dwo_file = item; | |
a2ce51a0 | 9409 | hashval_t hash; |
3019eac3 | 9410 | |
a2ce51a0 DE |
9411 | hash = htab_hash_string (dwo_file->dwo_name); |
9412 | if (dwo_file->comp_dir != NULL) | |
9413 | hash += htab_hash_string (dwo_file->comp_dir); | |
9414 | return hash; | |
3019eac3 DE |
9415 | } |
9416 | ||
9417 | static int | |
9418 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
9419 | { | |
9420 | const struct dwo_file *lhs = item_lhs; | |
9421 | const struct dwo_file *rhs = item_rhs; | |
9422 | ||
a2ce51a0 DE |
9423 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
9424 | return 0; | |
9425 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
9426 | return lhs->comp_dir == rhs->comp_dir; | |
9427 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
9428 | } |
9429 | ||
9430 | /* Allocate a hash table for DWO files. */ | |
9431 | ||
9432 | static htab_t | |
9433 | allocate_dwo_file_hash_table (void) | |
9434 | { | |
9435 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9436 | ||
9437 | return htab_create_alloc_ex (41, | |
9438 | hash_dwo_file, | |
9439 | eq_dwo_file, | |
9440 | NULL, | |
9441 | &objfile->objfile_obstack, | |
9442 | hashtab_obstack_allocate, | |
9443 | dummy_obstack_deallocate); | |
9444 | } | |
9445 | ||
80626a55 DE |
9446 | /* Lookup DWO file DWO_NAME. */ |
9447 | ||
9448 | static void ** | |
0ac5b59e | 9449 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
9450 | { |
9451 | struct dwo_file find_entry; | |
9452 | void **slot; | |
9453 | ||
9454 | if (dwarf2_per_objfile->dwo_files == NULL) | |
9455 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
9456 | ||
9457 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
9458 | find_entry.dwo_name = dwo_name; |
9459 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
9460 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
9461 | ||
9462 | return slot; | |
9463 | } | |
9464 | ||
3019eac3 DE |
9465 | static hashval_t |
9466 | hash_dwo_unit (const void *item) | |
9467 | { | |
9468 | const struct dwo_unit *dwo_unit = item; | |
9469 | ||
9470 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
9471 | return dwo_unit->signature; | |
9472 | } | |
9473 | ||
9474 | static int | |
9475 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
9476 | { | |
9477 | const struct dwo_unit *lhs = item_lhs; | |
9478 | const struct dwo_unit *rhs = item_rhs; | |
9479 | ||
9480 | /* The signature is assumed to be unique within the DWO file. | |
9481 | So while object file CU dwo_id's always have the value zero, | |
9482 | that's OK, assuming each object file DWO file has only one CU, | |
9483 | and that's the rule for now. */ | |
9484 | return lhs->signature == rhs->signature; | |
9485 | } | |
9486 | ||
9487 | /* Allocate a hash table for DWO CUs,TUs. | |
9488 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
9489 | ||
9490 | static htab_t | |
9491 | allocate_dwo_unit_table (struct objfile *objfile) | |
9492 | { | |
9493 | /* Start out with a pretty small number. | |
9494 | Generally DWO files contain only one CU and maybe some TUs. */ | |
9495 | return htab_create_alloc_ex (3, | |
9496 | hash_dwo_unit, | |
9497 | eq_dwo_unit, | |
9498 | NULL, | |
9499 | &objfile->objfile_obstack, | |
9500 | hashtab_obstack_allocate, | |
9501 | dummy_obstack_deallocate); | |
9502 | } | |
9503 | ||
80626a55 | 9504 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 9505 | |
19c3d4c9 | 9506 | struct create_dwo_cu_data |
3019eac3 DE |
9507 | { |
9508 | struct dwo_file *dwo_file; | |
19c3d4c9 | 9509 | struct dwo_unit dwo_unit; |
3019eac3 DE |
9510 | }; |
9511 | ||
19c3d4c9 | 9512 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
9513 | |
9514 | static void | |
19c3d4c9 DE |
9515 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
9516 | const gdb_byte *info_ptr, | |
9517 | struct die_info *comp_unit_die, | |
9518 | int has_children, | |
9519 | void *datap) | |
3019eac3 DE |
9520 | { |
9521 | struct dwarf2_cu *cu = reader->cu; | |
9522 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9523 | sect_offset offset = cu->per_cu->offset; | |
8a0459fd | 9524 | struct dwarf2_section_info *section = cu->per_cu->section; |
19c3d4c9 | 9525 | struct create_dwo_cu_data *data = datap; |
3019eac3 | 9526 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 9527 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 9528 | struct attribute *attr; |
3019eac3 DE |
9529 | |
9530 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
9531 | if (attr == NULL) | |
9532 | { | |
19c3d4c9 DE |
9533 | complaint (&symfile_complaints, |
9534 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
9535 | " its dwo_id [in module %s]"), | |
9536 | offset.sect_off, dwo_file->dwo_name); | |
3019eac3 DE |
9537 | return; |
9538 | } | |
9539 | ||
3019eac3 DE |
9540 | dwo_unit->dwo_file = dwo_file; |
9541 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 9542 | dwo_unit->section = section; |
3019eac3 DE |
9543 | dwo_unit->offset = offset; |
9544 | dwo_unit->length = cu->per_cu->length; | |
9545 | ||
b4f54984 | 9546 | if (dwarf_read_debug) |
4031ecc5 DE |
9547 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9548 | offset.sect_off, hex_string (dwo_unit->signature)); | |
3019eac3 DE |
9549 | } |
9550 | ||
19c3d4c9 DE |
9551 | /* Create the dwo_unit for the lone CU in DWO_FILE. |
9552 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 | 9553 | |
19c3d4c9 DE |
9554 | static struct dwo_unit * |
9555 | create_dwo_cu (struct dwo_file *dwo_file) | |
3019eac3 DE |
9556 | { |
9557 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9558 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
9559 | bfd *abfd; | |
9560 | htab_t cu_htab; | |
d521ce57 | 9561 | const gdb_byte *info_ptr, *end_ptr; |
19c3d4c9 DE |
9562 | struct create_dwo_cu_data create_dwo_cu_data; |
9563 | struct dwo_unit *dwo_unit; | |
3019eac3 DE |
9564 | |
9565 | dwarf2_read_section (objfile, section); | |
9566 | info_ptr = section->buffer; | |
9567 | ||
9568 | if (info_ptr == NULL) | |
9569 | return NULL; | |
9570 | ||
9571 | /* We can't set abfd until now because the section may be empty or | |
9572 | not present, in which case section->asection will be NULL. */ | |
a32a8923 | 9573 | abfd = get_section_bfd_owner (section); |
3019eac3 | 9574 | |
b4f54984 | 9575 | if (dwarf_read_debug) |
19c3d4c9 DE |
9576 | { |
9577 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
a32a8923 DE |
9578 | get_section_name (section), |
9579 | get_section_file_name (section)); | |
19c3d4c9 | 9580 | } |
3019eac3 | 9581 | |
19c3d4c9 DE |
9582 | create_dwo_cu_data.dwo_file = dwo_file; |
9583 | dwo_unit = NULL; | |
3019eac3 DE |
9584 | |
9585 | end_ptr = info_ptr + section->size; | |
9586 | while (info_ptr < end_ptr) | |
9587 | { | |
9588 | struct dwarf2_per_cu_data per_cu; | |
9589 | ||
19c3d4c9 DE |
9590 | memset (&create_dwo_cu_data.dwo_unit, 0, |
9591 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
9592 | memset (&per_cu, 0, sizeof (per_cu)); |
9593 | per_cu.objfile = objfile; | |
9594 | per_cu.is_debug_types = 0; | |
9595 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 9596 | per_cu.section = section; |
3019eac3 | 9597 | |
33e80786 | 9598 | init_cutu_and_read_dies_no_follow (&per_cu, dwo_file, |
19c3d4c9 DE |
9599 | create_dwo_cu_reader, |
9600 | &create_dwo_cu_data); | |
9601 | ||
9602 | if (create_dwo_cu_data.dwo_unit.dwo_file != NULL) | |
9603 | { | |
9604 | /* If we've already found one, complain. We only support one | |
9605 | because having more than one requires hacking the dwo_name of | |
9606 | each to match, which is highly unlikely to happen. */ | |
9607 | if (dwo_unit != NULL) | |
9608 | { | |
9609 | complaint (&symfile_complaints, | |
9610 | _("Multiple CUs in DWO file %s [in module %s]"), | |
4262abfb | 9611 | dwo_file->dwo_name, objfile_name (objfile)); |
19c3d4c9 DE |
9612 | break; |
9613 | } | |
9614 | ||
9615 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9616 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
9617 | } | |
3019eac3 DE |
9618 | |
9619 | info_ptr += per_cu.length; | |
9620 | } | |
9621 | ||
19c3d4c9 | 9622 | return dwo_unit; |
3019eac3 DE |
9623 | } |
9624 | ||
80626a55 DE |
9625 | /* DWP file .debug_{cu,tu}_index section format: |
9626 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
9627 | ||
d2415c6c DE |
9628 | DWP Version 1: |
9629 | ||
80626a55 DE |
9630 | Both index sections have the same format, and serve to map a 64-bit |
9631 | signature to a set of section numbers. Each section begins with a header, | |
9632 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
9633 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
9634 | aligned at 8-byte boundaries in the file. | |
9635 | ||
d2415c6c DE |
9636 | The index section header consists of: |
9637 | ||
9638 | V, 32 bit version number | |
9639 | -, 32 bits unused | |
9640 | N, 32 bit number of compilation units or type units in the index | |
9641 | M, 32 bit number of slots in the hash table | |
80626a55 | 9642 | |
d2415c6c | 9643 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 9644 | |
d2415c6c DE |
9645 | The hash table begins at offset 16 in the section, and consists of an array |
9646 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
9647 | order of the application binary). Unused slots in the hash table are 0. | |
9648 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 9649 | |
d2415c6c DE |
9650 | The parallel table begins immediately after the hash table |
9651 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
9652 | array of 32-bit indexes (using the byte order of the application binary), | |
9653 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
9654 | table contains a 32-bit index into the pool of section numbers. For unused | |
9655 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 9656 | |
73869dc2 DE |
9657 | The pool of section numbers begins immediately following the hash table |
9658 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
9659 | section numbers consists of an array of 32-bit words (using the byte order | |
9660 | of the application binary). Each item in the array is indexed starting | |
9661 | from 0. The hash table entry provides the index of the first section | |
9662 | number in the set. Additional section numbers in the set follow, and the | |
9663 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
9664 | ||
9665 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
9666 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
9667 | be the second entry. Other members of the set may follow in any order. | |
9668 | ||
9669 | --- | |
9670 | ||
9671 | DWP Version 2: | |
9672 | ||
9673 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
9674 | and the entries in the index tables are now offsets into these sections. | |
9675 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
9676 | section. | |
9677 | ||
9678 | Index Section Contents: | |
9679 | Header | |
9680 | Hash Table of Signatures dwp_hash_table.hash_table | |
9681 | Parallel Table of Indices dwp_hash_table.unit_table | |
9682 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
9683 | Table of Section Sizes dwp_hash_table.v2.sizes | |
9684 | ||
9685 | The index section header consists of: | |
9686 | ||
9687 | V, 32 bit version number | |
9688 | L, 32 bit number of columns in the table of section offsets | |
9689 | N, 32 bit number of compilation units or type units in the index | |
9690 | M, 32 bit number of slots in the hash table | |
9691 | ||
9692 | Numbers are recorded using the byte order of the application binary. | |
9693 | ||
9694 | The hash table has the same format as version 1. | |
9695 | The parallel table of indices has the same format as version 1, | |
9696 | except that the entries are origin-1 indices into the table of sections | |
9697 | offsets and the table of section sizes. | |
9698 | ||
9699 | The table of offsets begins immediately following the parallel table | |
9700 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
9701 | a two-dimensional array of 32-bit words (using the byte order of the | |
9702 | application binary), with L columns and N+1 rows, in row-major order. | |
9703 | Each row in the array is indexed starting from 0. The first row provides | |
9704 | a key to the remaining rows: each column in this row provides an identifier | |
9705 | for a debug section, and the offsets in the same column of subsequent rows | |
9706 | refer to that section. The section identifiers are: | |
9707 | ||
9708 | DW_SECT_INFO 1 .debug_info.dwo | |
9709 | DW_SECT_TYPES 2 .debug_types.dwo | |
9710 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
9711 | DW_SECT_LINE 4 .debug_line.dwo | |
9712 | DW_SECT_LOC 5 .debug_loc.dwo | |
9713 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
9714 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
9715 | DW_SECT_MACRO 8 .debug_macro.dwo | |
9716 | ||
9717 | The offsets provided by the CU and TU index sections are the base offsets | |
9718 | for the contributions made by each CU or TU to the corresponding section | |
9719 | in the package file. Each CU and TU header contains an abbrev_offset | |
9720 | field, used to find the abbreviations table for that CU or TU within the | |
9721 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
9722 | be interpreted as relative to the base offset given in the index section. | |
9723 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
9724 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
9725 | and offsets into other debug sections obtained from DWARF attributes should | |
9726 | also be interpreted as relative to the corresponding base offset. | |
9727 | ||
9728 | The table of sizes begins immediately following the table of offsets. | |
9729 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
9730 | with L columns and N rows, in row-major order. Each row in the array is | |
9731 | indexed starting from 1 (row 0 is shared by the two tables). | |
9732 | ||
9733 | --- | |
9734 | ||
9735 | Hash table lookup is handled the same in version 1 and 2: | |
9736 | ||
9737 | We assume that N and M will not exceed 2^32 - 1. | |
9738 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
9739 | ||
d2415c6c DE |
9740 | Given a 64-bit compilation unit signature or a type signature S, an entry |
9741 | in the hash table is located as follows: | |
80626a55 | 9742 | |
d2415c6c DE |
9743 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
9744 | the low-order k bits all set to 1. | |
80626a55 | 9745 | |
d2415c6c | 9746 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 9747 | |
d2415c6c DE |
9748 | 3) If the hash table entry at index H matches the signature, use that |
9749 | entry. If the hash table entry at index H is unused (all zeroes), | |
9750 | terminate the search: the signature is not present in the table. | |
80626a55 | 9751 | |
d2415c6c | 9752 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 9753 | |
d2415c6c | 9754 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 9755 | to stop at an unused slot or find the match. */ |
80626a55 DE |
9756 | |
9757 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
9758 | .debug_{info,types}.dwo in DWP_FILE. | |
9759 | Returns NULL if there isn't one. | |
9760 | Note: This function processes DWP files only, not DWO files. */ | |
9761 | ||
9762 | static struct dwp_hash_table * | |
9763 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
9764 | { | |
9765 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9766 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 9767 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 9768 | struct dwarf2_section_info *index; |
73869dc2 | 9769 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
9770 | struct dwp_hash_table *htab; |
9771 | ||
9772 | if (is_debug_types) | |
9773 | index = &dwp_file->sections.tu_index; | |
9774 | else | |
9775 | index = &dwp_file->sections.cu_index; | |
9776 | ||
9777 | if (dwarf2_section_empty_p (index)) | |
9778 | return NULL; | |
9779 | dwarf2_read_section (objfile, index); | |
9780 | ||
9781 | index_ptr = index->buffer; | |
9782 | index_end = index_ptr + index->size; | |
9783 | ||
9784 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
9785 | index_ptr += 4; |
9786 | if (version == 2) | |
9787 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
9788 | else | |
9789 | nr_columns = 0; | |
9790 | index_ptr += 4; | |
80626a55 DE |
9791 | nr_units = read_4_bytes (dbfd, index_ptr); |
9792 | index_ptr += 4; | |
9793 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
9794 | index_ptr += 4; | |
9795 | ||
73869dc2 | 9796 | if (version != 1 && version != 2) |
80626a55 | 9797 | { |
21aa081e | 9798 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 9799 | " [in module %s]"), |
21aa081e | 9800 | pulongest (version), dwp_file->name); |
80626a55 DE |
9801 | } |
9802 | if (nr_slots != (nr_slots & -nr_slots)) | |
9803 | { | |
21aa081e | 9804 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 9805 | " is not power of 2 [in module %s]"), |
21aa081e | 9806 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
9807 | } |
9808 | ||
9809 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
9810 | htab->version = version; |
9811 | htab->nr_columns = nr_columns; | |
80626a55 DE |
9812 | htab->nr_units = nr_units; |
9813 | htab->nr_slots = nr_slots; | |
9814 | htab->hash_table = index_ptr; | |
9815 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
9816 | |
9817 | /* Exit early if the table is empty. */ | |
9818 | if (nr_slots == 0 || nr_units == 0 | |
9819 | || (version == 2 && nr_columns == 0)) | |
9820 | { | |
9821 | /* All must be zero. */ | |
9822 | if (nr_slots != 0 || nr_units != 0 | |
9823 | || (version == 2 && nr_columns != 0)) | |
9824 | { | |
9825 | complaint (&symfile_complaints, | |
9826 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
9827 | " all zero [in modules %s]"), | |
9828 | dwp_file->name); | |
9829 | } | |
9830 | return htab; | |
9831 | } | |
9832 | ||
9833 | if (version == 1) | |
9834 | { | |
9835 | htab->section_pool.v1.indices = | |
9836 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9837 | /* It's harder to decide whether the section is too small in v1. | |
9838 | V1 is deprecated anyway so we punt. */ | |
9839 | } | |
9840 | else | |
9841 | { | |
9842 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9843 | int *ids = htab->section_pool.v2.section_ids; | |
9844 | /* Reverse map for error checking. */ | |
9845 | int ids_seen[DW_SECT_MAX + 1]; | |
9846 | int i; | |
9847 | ||
9848 | if (nr_columns < 2) | |
9849 | { | |
9850 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
9851 | " in section table [in module %s]"), | |
9852 | dwp_file->name); | |
9853 | } | |
9854 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
9855 | { | |
9856 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
9857 | " in section table [in module %s]"), | |
9858 | dwp_file->name); | |
9859 | } | |
9860 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9861 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9862 | for (i = 0; i < nr_columns; ++i) | |
9863 | { | |
9864 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
9865 | ||
9866 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
9867 | { | |
9868 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
9869 | " in section table [in module %s]"), | |
9870 | id, dwp_file->name); | |
9871 | } | |
9872 | if (ids_seen[id] != -1) | |
9873 | { | |
9874 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
9875 | " id %d in section table [in module %s]"), | |
9876 | id, dwp_file->name); | |
9877 | } | |
9878 | ids_seen[id] = i; | |
9879 | ids[i] = id; | |
9880 | } | |
9881 | /* Must have exactly one info or types section. */ | |
9882 | if (((ids_seen[DW_SECT_INFO] != -1) | |
9883 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
9884 | != 1) | |
9885 | { | |
9886 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
9887 | " DWO info/types section [in module %s]"), | |
9888 | dwp_file->name); | |
9889 | } | |
9890 | /* Must have an abbrev section. */ | |
9891 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
9892 | { | |
9893 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
9894 | " section [in module %s]"), | |
9895 | dwp_file->name); | |
9896 | } | |
9897 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
9898 | htab->section_pool.v2.sizes = | |
9899 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
9900 | * nr_units * nr_columns); | |
9901 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
9902 | * nr_units * nr_columns)) | |
9903 | > index_end) | |
9904 | { | |
9905 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
9906 | " [in module %s]"), | |
9907 | dwp_file->name); | |
9908 | } | |
9909 | } | |
80626a55 DE |
9910 | |
9911 | return htab; | |
9912 | } | |
9913 | ||
9914 | /* Update SECTIONS with the data from SECTP. | |
9915 | ||
9916 | This function is like the other "locate" section routines that are | |
9917 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 9918 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
9919 | |
9920 | The result is non-zero for success, or zero if an error was found. */ | |
9921 | ||
9922 | static int | |
73869dc2 DE |
9923 | locate_v1_virtual_dwo_sections (asection *sectp, |
9924 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
9925 | { |
9926 | const struct dwop_section_names *names = &dwop_section_names; | |
9927 | ||
9928 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
9929 | { | |
9930 | /* There can be only one. */ | |
73869dc2 | 9931 | if (sections->abbrev.s.asection != NULL) |
80626a55 | 9932 | return 0; |
73869dc2 | 9933 | sections->abbrev.s.asection = sectp; |
80626a55 DE |
9934 | sections->abbrev.size = bfd_get_section_size (sectp); |
9935 | } | |
9936 | else if (section_is_p (sectp->name, &names->info_dwo) | |
9937 | || section_is_p (sectp->name, &names->types_dwo)) | |
9938 | { | |
9939 | /* There can be only one. */ | |
73869dc2 | 9940 | if (sections->info_or_types.s.asection != NULL) |
80626a55 | 9941 | return 0; |
73869dc2 | 9942 | sections->info_or_types.s.asection = sectp; |
80626a55 DE |
9943 | sections->info_or_types.size = bfd_get_section_size (sectp); |
9944 | } | |
9945 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
9946 | { | |
9947 | /* There can be only one. */ | |
73869dc2 | 9948 | if (sections->line.s.asection != NULL) |
80626a55 | 9949 | return 0; |
73869dc2 | 9950 | sections->line.s.asection = sectp; |
80626a55 DE |
9951 | sections->line.size = bfd_get_section_size (sectp); |
9952 | } | |
9953 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
9954 | { | |
9955 | /* There can be only one. */ | |
73869dc2 | 9956 | if (sections->loc.s.asection != NULL) |
80626a55 | 9957 | return 0; |
73869dc2 | 9958 | sections->loc.s.asection = sectp; |
80626a55 DE |
9959 | sections->loc.size = bfd_get_section_size (sectp); |
9960 | } | |
9961 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
9962 | { | |
9963 | /* There can be only one. */ | |
73869dc2 | 9964 | if (sections->macinfo.s.asection != NULL) |
80626a55 | 9965 | return 0; |
73869dc2 | 9966 | sections->macinfo.s.asection = sectp; |
80626a55 DE |
9967 | sections->macinfo.size = bfd_get_section_size (sectp); |
9968 | } | |
9969 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
9970 | { | |
9971 | /* There can be only one. */ | |
73869dc2 | 9972 | if (sections->macro.s.asection != NULL) |
80626a55 | 9973 | return 0; |
73869dc2 | 9974 | sections->macro.s.asection = sectp; |
80626a55 DE |
9975 | sections->macro.size = bfd_get_section_size (sectp); |
9976 | } | |
9977 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
9978 | { | |
9979 | /* There can be only one. */ | |
73869dc2 | 9980 | if (sections->str_offsets.s.asection != NULL) |
80626a55 | 9981 | return 0; |
73869dc2 | 9982 | sections->str_offsets.s.asection = sectp; |
80626a55 DE |
9983 | sections->str_offsets.size = bfd_get_section_size (sectp); |
9984 | } | |
9985 | else | |
9986 | { | |
9987 | /* No other kind of section is valid. */ | |
9988 | return 0; | |
9989 | } | |
9990 | ||
9991 | return 1; | |
9992 | } | |
9993 | ||
73869dc2 DE |
9994 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
9995 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9996 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9997 | This is for DWP version 1 files. */ | |
80626a55 DE |
9998 | |
9999 | static struct dwo_unit * | |
73869dc2 DE |
10000 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
10001 | uint32_t unit_index, | |
10002 | const char *comp_dir, | |
10003 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
10004 | { |
10005 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
10006 | const struct dwp_hash_table *dwp_htab = |
10007 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
10008 | bfd *dbfd = dwp_file->dbfd; |
10009 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10010 | struct dwo_file *dwo_file; | |
10011 | struct dwo_unit *dwo_unit; | |
73869dc2 | 10012 | struct virtual_v1_dwo_sections sections; |
80626a55 DE |
10013 | void **dwo_file_slot; |
10014 | char *virtual_dwo_name; | |
10015 | struct dwarf2_section_info *cutu; | |
10016 | struct cleanup *cleanups; | |
10017 | int i; | |
10018 | ||
73869dc2 DE |
10019 | gdb_assert (dwp_file->version == 1); |
10020 | ||
b4f54984 | 10021 | if (dwarf_read_debug) |
80626a55 | 10022 | { |
73869dc2 | 10023 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 10024 | kind, |
73869dc2 | 10025 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
10026 | dwp_file->name); |
10027 | } | |
10028 | ||
19ac8c2e | 10029 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
10030 | Put a limit on the number of sections we look for so that bad data |
10031 | doesn't cause us to loop forever. */ | |
10032 | ||
73869dc2 | 10033 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
10034 | (1 /* .debug_info or .debug_types */ \ |
10035 | + 1 /* .debug_abbrev */ \ | |
10036 | + 1 /* .debug_line */ \ | |
10037 | + 1 /* .debug_loc */ \ | |
10038 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 10039 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
10040 | + 1 /* trailing zero */) |
10041 | ||
10042 | memset (§ions, 0, sizeof (sections)); | |
10043 | cleanups = make_cleanup (null_cleanup, 0); | |
10044 | ||
73869dc2 | 10045 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
10046 | { |
10047 | asection *sectp; | |
10048 | uint32_t section_nr = | |
10049 | read_4_bytes (dbfd, | |
73869dc2 DE |
10050 | dwp_htab->section_pool.v1.indices |
10051 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
10052 | |
10053 | if (section_nr == 0) | |
10054 | break; | |
10055 | if (section_nr >= dwp_file->num_sections) | |
10056 | { | |
10057 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
10058 | " [in module %s]"), | |
10059 | dwp_file->name); | |
10060 | } | |
10061 | ||
10062 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 10063 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
10064 | { |
10065 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
10066 | " [in module %s]"), | |
10067 | dwp_file->name); | |
10068 | } | |
10069 | } | |
10070 | ||
10071 | if (i < 2 | |
a32a8923 DE |
10072 | || dwarf2_section_empty_p (§ions.info_or_types) |
10073 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
10074 | { |
10075 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
10076 | " [in module %s]"), | |
10077 | dwp_file->name); | |
10078 | } | |
73869dc2 | 10079 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
10080 | { |
10081 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
10082 | " [in module %s]"), | |
10083 | dwp_file->name); | |
10084 | } | |
10085 | ||
10086 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10087 | have dwo_unit "live" in that. At least for now. | |
10088 | ||
10089 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 10090 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
10091 | file, we can combine them back into a virtual DWO file to save space |
10092 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
10093 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
10094 | ||
2792b94d PM |
10095 | virtual_dwo_name = |
10096 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
a32a8923 DE |
10097 | get_section_id (§ions.abbrev), |
10098 | get_section_id (§ions.line), | |
10099 | get_section_id (§ions.loc), | |
10100 | get_section_id (§ions.str_offsets)); | |
80626a55 DE |
10101 | make_cleanup (xfree, virtual_dwo_name); |
10102 | /* Can we use an existing virtual DWO file? */ | |
0ac5b59e | 10103 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); |
80626a55 DE |
10104 | /* Create one if necessary. */ |
10105 | if (*dwo_file_slot == NULL) | |
10106 | { | |
b4f54984 | 10107 | if (dwarf_read_debug) |
80626a55 DE |
10108 | { |
10109 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10110 | virtual_dwo_name); | |
10111 | } | |
10112 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10113 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, |
10114 | virtual_dwo_name, | |
10115 | strlen (virtual_dwo_name)); | |
10116 | dwo_file->comp_dir = comp_dir; | |
80626a55 DE |
10117 | dwo_file->sections.abbrev = sections.abbrev; |
10118 | dwo_file->sections.line = sections.line; | |
10119 | dwo_file->sections.loc = sections.loc; | |
10120 | dwo_file->sections.macinfo = sections.macinfo; | |
10121 | dwo_file->sections.macro = sections.macro; | |
10122 | dwo_file->sections.str_offsets = sections.str_offsets; | |
10123 | /* The "str" section is global to the entire DWP file. */ | |
10124 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 10125 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
10126 | there's no need to record it in dwo_file. |
10127 | Also, we can't simply record type sections in dwo_file because | |
10128 | we record a pointer into the vector in dwo_unit. As we collect more | |
10129 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
10130 | for it, invalidating all copies of pointers into the previous |
10131 | contents. */ | |
80626a55 DE |
10132 | *dwo_file_slot = dwo_file; |
10133 | } | |
10134 | else | |
10135 | { | |
b4f54984 | 10136 | if (dwarf_read_debug) |
80626a55 DE |
10137 | { |
10138 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10139 | virtual_dwo_name); | |
10140 | } | |
10141 | dwo_file = *dwo_file_slot; | |
10142 | } | |
10143 | do_cleanups (cleanups); | |
10144 | ||
10145 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10146 | dwo_unit->dwo_file = dwo_file; | |
10147 | dwo_unit->signature = signature; | |
8a0459fd DE |
10148 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, |
10149 | sizeof (struct dwarf2_section_info)); | |
10150 | *dwo_unit->section = sections.info_or_types; | |
57d63ce2 | 10151 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
10152 | |
10153 | return dwo_unit; | |
10154 | } | |
10155 | ||
73869dc2 DE |
10156 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
10157 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
10158 | piece within that section used by a TU/CU, return a virtual section | |
10159 | of just that piece. */ | |
10160 | ||
10161 | static struct dwarf2_section_info | |
10162 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
10163 | bfd_size_type offset, bfd_size_type size) | |
10164 | { | |
10165 | struct dwarf2_section_info result; | |
10166 | asection *sectp; | |
10167 | ||
10168 | gdb_assert (section != NULL); | |
10169 | gdb_assert (!section->is_virtual); | |
10170 | ||
10171 | memset (&result, 0, sizeof (result)); | |
10172 | result.s.containing_section = section; | |
10173 | result.is_virtual = 1; | |
10174 | ||
10175 | if (size == 0) | |
10176 | return result; | |
10177 | ||
10178 | sectp = get_section_bfd_section (section); | |
10179 | ||
10180 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
10181 | bounds of the real section. This is a pretty-rare event, so just | |
10182 | flag an error (easier) instead of a warning and trying to cope. */ | |
10183 | if (sectp == NULL | |
10184 | || offset + size > bfd_get_section_size (sectp)) | |
10185 | { | |
10186 | bfd *abfd = sectp->owner; | |
10187 | ||
10188 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" | |
10189 | " in section %s [in module %s]"), | |
10190 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
10191 | objfile_name (dwarf2_per_objfile->objfile)); | |
10192 | } | |
10193 | ||
10194 | result.virtual_offset = offset; | |
10195 | result.size = size; | |
10196 | return result; | |
10197 | } | |
10198 | ||
10199 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
10200 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
10201 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
10202 | This is for DWP version 2 files. */ | |
10203 | ||
10204 | static struct dwo_unit * | |
10205 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
10206 | uint32_t unit_index, | |
10207 | const char *comp_dir, | |
10208 | ULONGEST signature, int is_debug_types) | |
10209 | { | |
10210 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10211 | const struct dwp_hash_table *dwp_htab = | |
10212 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10213 | bfd *dbfd = dwp_file->dbfd; | |
10214 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10215 | struct dwo_file *dwo_file; | |
10216 | struct dwo_unit *dwo_unit; | |
10217 | struct virtual_v2_dwo_sections sections; | |
10218 | void **dwo_file_slot; | |
10219 | char *virtual_dwo_name; | |
10220 | struct dwarf2_section_info *cutu; | |
10221 | struct cleanup *cleanups; | |
10222 | int i; | |
10223 | ||
10224 | gdb_assert (dwp_file->version == 2); | |
10225 | ||
b4f54984 | 10226 | if (dwarf_read_debug) |
73869dc2 DE |
10227 | { |
10228 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
10229 | kind, | |
10230 | pulongest (unit_index), hex_string (signature), | |
10231 | dwp_file->name); | |
10232 | } | |
10233 | ||
10234 | /* Fetch the section offsets of this DWO unit. */ | |
10235 | ||
10236 | memset (§ions, 0, sizeof (sections)); | |
10237 | cleanups = make_cleanup (null_cleanup, 0); | |
10238 | ||
10239 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
10240 | { | |
10241 | uint32_t offset = read_4_bytes (dbfd, | |
10242 | dwp_htab->section_pool.v2.offsets | |
10243 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10244 | + i) | |
10245 | * sizeof (uint32_t))); | |
10246 | uint32_t size = read_4_bytes (dbfd, | |
10247 | dwp_htab->section_pool.v2.sizes | |
10248 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10249 | + i) | |
10250 | * sizeof (uint32_t))); | |
10251 | ||
10252 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
10253 | { | |
10254 | case DW_SECT_INFO: | |
10255 | case DW_SECT_TYPES: | |
10256 | sections.info_or_types_offset = offset; | |
10257 | sections.info_or_types_size = size; | |
10258 | break; | |
10259 | case DW_SECT_ABBREV: | |
10260 | sections.abbrev_offset = offset; | |
10261 | sections.abbrev_size = size; | |
10262 | break; | |
10263 | case DW_SECT_LINE: | |
10264 | sections.line_offset = offset; | |
10265 | sections.line_size = size; | |
10266 | break; | |
10267 | case DW_SECT_LOC: | |
10268 | sections.loc_offset = offset; | |
10269 | sections.loc_size = size; | |
10270 | break; | |
10271 | case DW_SECT_STR_OFFSETS: | |
10272 | sections.str_offsets_offset = offset; | |
10273 | sections.str_offsets_size = size; | |
10274 | break; | |
10275 | case DW_SECT_MACINFO: | |
10276 | sections.macinfo_offset = offset; | |
10277 | sections.macinfo_size = size; | |
10278 | break; | |
10279 | case DW_SECT_MACRO: | |
10280 | sections.macro_offset = offset; | |
10281 | sections.macro_size = size; | |
10282 | break; | |
10283 | } | |
10284 | } | |
10285 | ||
10286 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10287 | have dwo_unit "live" in that. At least for now. | |
10288 | ||
10289 | The DWP file can be made up of a random collection of CUs and TUs. | |
10290 | However, for each CU + set of TUs that came from the same original DWO | |
10291 | file, we can combine them back into a virtual DWO file to save space | |
10292 | (fewer struct dwo_file objects to allocate). Remember that for really | |
10293 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
10294 | ||
10295 | virtual_dwo_name = | |
10296 | xstrprintf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
10297 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
10298 | (long) (sections.line_size ? sections.line_offset : 0), | |
10299 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
10300 | (long) (sections.str_offsets_size | |
10301 | ? sections.str_offsets_offset : 0)); | |
10302 | make_cleanup (xfree, virtual_dwo_name); | |
10303 | /* Can we use an existing virtual DWO file? */ | |
10304 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); | |
10305 | /* Create one if necessary. */ | |
10306 | if (*dwo_file_slot == NULL) | |
10307 | { | |
b4f54984 | 10308 | if (dwarf_read_debug) |
73869dc2 DE |
10309 | { |
10310 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10311 | virtual_dwo_name); | |
10312 | } | |
10313 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
10314 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, | |
10315 | virtual_dwo_name, | |
10316 | strlen (virtual_dwo_name)); | |
10317 | dwo_file->comp_dir = comp_dir; | |
10318 | dwo_file->sections.abbrev = | |
10319 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
10320 | sections.abbrev_offset, sections.abbrev_size); | |
10321 | dwo_file->sections.line = | |
10322 | create_dwp_v2_section (&dwp_file->sections.line, | |
10323 | sections.line_offset, sections.line_size); | |
10324 | dwo_file->sections.loc = | |
10325 | create_dwp_v2_section (&dwp_file->sections.loc, | |
10326 | sections.loc_offset, sections.loc_size); | |
10327 | dwo_file->sections.macinfo = | |
10328 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
10329 | sections.macinfo_offset, sections.macinfo_size); | |
10330 | dwo_file->sections.macro = | |
10331 | create_dwp_v2_section (&dwp_file->sections.macro, | |
10332 | sections.macro_offset, sections.macro_size); | |
10333 | dwo_file->sections.str_offsets = | |
10334 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
10335 | sections.str_offsets_offset, | |
10336 | sections.str_offsets_size); | |
10337 | /* The "str" section is global to the entire DWP file. */ | |
10338 | dwo_file->sections.str = dwp_file->sections.str; | |
10339 | /* The info or types section is assigned below to dwo_unit, | |
10340 | there's no need to record it in dwo_file. | |
10341 | Also, we can't simply record type sections in dwo_file because | |
10342 | we record a pointer into the vector in dwo_unit. As we collect more | |
10343 | types we'll grow the vector and eventually have to reallocate space | |
10344 | for it, invalidating all copies of pointers into the previous | |
10345 | contents. */ | |
10346 | *dwo_file_slot = dwo_file; | |
10347 | } | |
10348 | else | |
10349 | { | |
b4f54984 | 10350 | if (dwarf_read_debug) |
73869dc2 DE |
10351 | { |
10352 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10353 | virtual_dwo_name); | |
10354 | } | |
10355 | dwo_file = *dwo_file_slot; | |
10356 | } | |
10357 | do_cleanups (cleanups); | |
10358 | ||
10359 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10360 | dwo_unit->dwo_file = dwo_file; | |
10361 | dwo_unit->signature = signature; | |
10362 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, | |
10363 | sizeof (struct dwarf2_section_info)); | |
10364 | *dwo_unit->section = create_dwp_v2_section (is_debug_types | |
10365 | ? &dwp_file->sections.types | |
10366 | : &dwp_file->sections.info, | |
10367 | sections.info_or_types_offset, | |
10368 | sections.info_or_types_size); | |
10369 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
10370 | ||
10371 | return dwo_unit; | |
10372 | } | |
10373 | ||
57d63ce2 DE |
10374 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
10375 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
10376 | |
10377 | static struct dwo_unit * | |
57d63ce2 DE |
10378 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
10379 | ULONGEST signature, int is_debug_types) | |
80626a55 | 10380 | { |
57d63ce2 DE |
10381 | const struct dwp_hash_table *dwp_htab = |
10382 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 10383 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 10384 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
10385 | uint32_t hash = signature & mask; |
10386 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
10387 | unsigned int i; | |
10388 | void **slot; | |
10389 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
10390 | ||
10391 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
10392 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
10393 | slot = htab_find_slot (is_debug_types |
10394 | ? dwp_file->loaded_tus | |
10395 | : dwp_file->loaded_cus, | |
10396 | &find_dwo_cu, INSERT); | |
80626a55 DE |
10397 | |
10398 | if (*slot != NULL) | |
10399 | return *slot; | |
10400 | ||
10401 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 10402 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
10403 | { |
10404 | ULONGEST signature_in_table; | |
10405 | ||
10406 | signature_in_table = | |
57d63ce2 | 10407 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
10408 | if (signature_in_table == signature) |
10409 | { | |
57d63ce2 DE |
10410 | uint32_t unit_index = |
10411 | read_4_bytes (dbfd, | |
10412 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 10413 | |
73869dc2 DE |
10414 | if (dwp_file->version == 1) |
10415 | { | |
10416 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
10417 | comp_dir, signature, | |
10418 | is_debug_types); | |
10419 | } | |
10420 | else | |
10421 | { | |
10422 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
10423 | comp_dir, signature, | |
10424 | is_debug_types); | |
10425 | } | |
80626a55 DE |
10426 | return *slot; |
10427 | } | |
10428 | if (signature_in_table == 0) | |
10429 | return NULL; | |
10430 | hash = (hash + hash2) & mask; | |
10431 | } | |
10432 | ||
10433 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
10434 | " [in module %s]"), | |
10435 | dwp_file->name); | |
10436 | } | |
10437 | ||
ab5088bf | 10438 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
10439 | Open the file specified by FILE_NAME and hand it off to BFD for |
10440 | preliminary analysis. Return a newly initialized bfd *, which | |
10441 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 10442 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
10443 | SEARCH_CWD is true if the current directory is to be searched. |
10444 | It will be searched before debug-file-directory. | |
13aaf454 DE |
10445 | If successful, the file is added to the bfd include table of the |
10446 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 10447 | If unable to find/open the file, return NULL. |
3019eac3 DE |
10448 | NOTE: This function is derived from symfile_bfd_open. */ |
10449 | ||
10450 | static bfd * | |
6ac97d4c | 10451 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 DE |
10452 | { |
10453 | bfd *sym_bfd; | |
80626a55 | 10454 | int desc, flags; |
3019eac3 | 10455 | char *absolute_name; |
9c02c129 DE |
10456 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
10457 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
10458 | to debug_file_directory. */ | |
10459 | char *search_path; | |
10460 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
10461 | ||
6ac97d4c DE |
10462 | if (search_cwd) |
10463 | { | |
10464 | if (*debug_file_directory != '\0') | |
10465 | search_path = concat (".", dirname_separator_string, | |
10466 | debug_file_directory, NULL); | |
10467 | else | |
10468 | search_path = xstrdup ("."); | |
10469 | } | |
9c02c129 | 10470 | else |
6ac97d4c | 10471 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 10472 | |
492c0ab7 | 10473 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
10474 | if (is_dwp) |
10475 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 10476 | desc = openp (search_path, flags, file_name, |
3019eac3 | 10477 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 10478 | xfree (search_path); |
3019eac3 DE |
10479 | if (desc < 0) |
10480 | return NULL; | |
10481 | ||
bb397797 | 10482 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
a4453b7e | 10483 | xfree (absolute_name); |
9c02c129 DE |
10484 | if (sym_bfd == NULL) |
10485 | return NULL; | |
3019eac3 DE |
10486 | bfd_set_cacheable (sym_bfd, 1); |
10487 | ||
10488 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
10489 | { | |
cbb099e8 | 10490 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
10491 | return NULL; |
10492 | } | |
10493 | ||
13aaf454 DE |
10494 | /* Success. Record the bfd as having been included by the objfile's bfd. |
10495 | This is important because things like demangled_names_hash lives in the | |
10496 | objfile's per_bfd space and may have references to things like symbol | |
10497 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
10498 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd); | |
10499 | ||
3019eac3 DE |
10500 | return sym_bfd; |
10501 | } | |
10502 | ||
ab5088bf | 10503 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
10504 | COMP_DIR is the DW_AT_comp_dir attribute. |
10505 | The result is the bfd handle of the file. | |
10506 | If there is a problem finding or opening the file, return NULL. | |
10507 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10508 | same as symfile_bfd_open. */ | |
10509 | ||
10510 | static bfd * | |
ab5088bf | 10511 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 DE |
10512 | { |
10513 | bfd *abfd; | |
3019eac3 | 10514 | |
80626a55 | 10515 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 10516 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
10517 | |
10518 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
10519 | ||
10520 | if (comp_dir != NULL) | |
10521 | { | |
80626a55 | 10522 | char *path_to_try = concat (comp_dir, SLASH_STRING, file_name, NULL); |
3019eac3 DE |
10523 | |
10524 | /* NOTE: If comp_dir is a relative path, this will also try the | |
10525 | search path, which seems useful. */ | |
6ac97d4c | 10526 | abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10527 | xfree (path_to_try); |
10528 | if (abfd != NULL) | |
10529 | return abfd; | |
10530 | } | |
10531 | ||
10532 | /* That didn't work, try debug-file-directory, which, despite its name, | |
10533 | is a list of paths. */ | |
10534 | ||
10535 | if (*debug_file_directory == '\0') | |
10536 | return NULL; | |
10537 | ||
6ac97d4c | 10538 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10539 | } |
10540 | ||
80626a55 DE |
10541 | /* This function is mapped across the sections and remembers the offset and |
10542 | size of each of the DWO debugging sections we are interested in. */ | |
10543 | ||
10544 | static void | |
10545 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
10546 | { | |
10547 | struct dwo_sections *dwo_sections = dwo_sections_ptr; | |
10548 | const struct dwop_section_names *names = &dwop_section_names; | |
10549 | ||
10550 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10551 | { | |
73869dc2 | 10552 | dwo_sections->abbrev.s.asection = sectp; |
80626a55 DE |
10553 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
10554 | } | |
10555 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10556 | { | |
73869dc2 | 10557 | dwo_sections->info.s.asection = sectp; |
80626a55 DE |
10558 | dwo_sections->info.size = bfd_get_section_size (sectp); |
10559 | } | |
10560 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10561 | { | |
73869dc2 | 10562 | dwo_sections->line.s.asection = sectp; |
80626a55 DE |
10563 | dwo_sections->line.size = bfd_get_section_size (sectp); |
10564 | } | |
10565 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10566 | { | |
73869dc2 | 10567 | dwo_sections->loc.s.asection = sectp; |
80626a55 DE |
10568 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
10569 | } | |
10570 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10571 | { | |
73869dc2 | 10572 | dwo_sections->macinfo.s.asection = sectp; |
80626a55 DE |
10573 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
10574 | } | |
10575 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10576 | { | |
73869dc2 | 10577 | dwo_sections->macro.s.asection = sectp; |
80626a55 DE |
10578 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
10579 | } | |
10580 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
10581 | { | |
73869dc2 | 10582 | dwo_sections->str.s.asection = sectp; |
80626a55 DE |
10583 | dwo_sections->str.size = bfd_get_section_size (sectp); |
10584 | } | |
10585 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10586 | { | |
73869dc2 | 10587 | dwo_sections->str_offsets.s.asection = sectp; |
80626a55 DE |
10588 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
10589 | } | |
10590 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10591 | { | |
10592 | struct dwarf2_section_info type_section; | |
10593 | ||
10594 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 10595 | type_section.s.asection = sectp; |
80626a55 DE |
10596 | type_section.size = bfd_get_section_size (sectp); |
10597 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
10598 | &type_section); | |
10599 | } | |
10600 | } | |
10601 | ||
ab5088bf | 10602 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 10603 | by PER_CU. This is for the non-DWP case. |
80626a55 | 10604 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
10605 | |
10606 | static struct dwo_file * | |
0ac5b59e DE |
10607 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
10608 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
10609 | { |
10610 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10611 | struct dwo_file *dwo_file; |
10612 | bfd *dbfd; | |
3019eac3 DE |
10613 | struct cleanup *cleanups; |
10614 | ||
ab5088bf | 10615 | dbfd = open_dwo_file (dwo_name, comp_dir); |
80626a55 DE |
10616 | if (dbfd == NULL) |
10617 | { | |
b4f54984 | 10618 | if (dwarf_read_debug) |
80626a55 DE |
10619 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
10620 | return NULL; | |
10621 | } | |
10622 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10623 | dwo_file->dwo_name = dwo_name; |
10624 | dwo_file->comp_dir = comp_dir; | |
80626a55 | 10625 | dwo_file->dbfd = dbfd; |
3019eac3 DE |
10626 | |
10627 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
10628 | ||
80626a55 | 10629 | bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections); |
3019eac3 | 10630 | |
19c3d4c9 | 10631 | dwo_file->cu = create_dwo_cu (dwo_file); |
3019eac3 DE |
10632 | |
10633 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
10634 | dwo_file->sections.types); | |
10635 | ||
10636 | discard_cleanups (cleanups); | |
10637 | ||
b4f54984 | 10638 | if (dwarf_read_debug) |
80626a55 DE |
10639 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
10640 | ||
3019eac3 DE |
10641 | return dwo_file; |
10642 | } | |
10643 | ||
80626a55 | 10644 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
10645 | size of each of the DWP debugging sections common to version 1 and 2 that |
10646 | we are interested in. */ | |
3019eac3 | 10647 | |
80626a55 | 10648 | static void |
73869dc2 DE |
10649 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
10650 | void *dwp_file_ptr) | |
3019eac3 | 10651 | { |
80626a55 DE |
10652 | struct dwp_file *dwp_file = dwp_file_ptr; |
10653 | const struct dwop_section_names *names = &dwop_section_names; | |
10654 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 10655 | |
80626a55 | 10656 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 10657 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
10658 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
10659 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 10660 | |
80626a55 DE |
10661 | /* Look for specific sections that we need. */ |
10662 | if (section_is_p (sectp->name, &names->str_dwo)) | |
10663 | { | |
73869dc2 | 10664 | dwp_file->sections.str.s.asection = sectp; |
80626a55 DE |
10665 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
10666 | } | |
10667 | else if (section_is_p (sectp->name, &names->cu_index)) | |
10668 | { | |
73869dc2 | 10669 | dwp_file->sections.cu_index.s.asection = sectp; |
80626a55 DE |
10670 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
10671 | } | |
10672 | else if (section_is_p (sectp->name, &names->tu_index)) | |
10673 | { | |
73869dc2 | 10674 | dwp_file->sections.tu_index.s.asection = sectp; |
80626a55 DE |
10675 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
10676 | } | |
10677 | } | |
3019eac3 | 10678 | |
73869dc2 DE |
10679 | /* This function is mapped across the sections and remembers the offset and |
10680 | size of each of the DWP version 2 debugging sections that we are interested | |
10681 | in. This is split into a separate function because we don't know if we | |
10682 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
10683 | ||
10684 | static void | |
10685 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
10686 | { | |
10687 | struct dwp_file *dwp_file = dwp_file_ptr; | |
10688 | const struct dwop_section_names *names = &dwop_section_names; | |
10689 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
10690 | ||
10691 | /* Record the ELF section number for later lookup: this is what the | |
10692 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
10693 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
10694 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
10695 | ||
10696 | /* Look for specific sections that we need. */ | |
10697 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10698 | { | |
10699 | dwp_file->sections.abbrev.s.asection = sectp; | |
10700 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
10701 | } | |
10702 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10703 | { | |
10704 | dwp_file->sections.info.s.asection = sectp; | |
10705 | dwp_file->sections.info.size = bfd_get_section_size (sectp); | |
10706 | } | |
10707 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10708 | { | |
10709 | dwp_file->sections.line.s.asection = sectp; | |
10710 | dwp_file->sections.line.size = bfd_get_section_size (sectp); | |
10711 | } | |
10712 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10713 | { | |
10714 | dwp_file->sections.loc.s.asection = sectp; | |
10715 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); | |
10716 | } | |
10717 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10718 | { | |
10719 | dwp_file->sections.macinfo.s.asection = sectp; | |
10720 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); | |
10721 | } | |
10722 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10723 | { | |
10724 | dwp_file->sections.macro.s.asection = sectp; | |
10725 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); | |
10726 | } | |
10727 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10728 | { | |
10729 | dwp_file->sections.str_offsets.s.asection = sectp; | |
10730 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
10731 | } | |
10732 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10733 | { | |
10734 | dwp_file->sections.types.s.asection = sectp; | |
10735 | dwp_file->sections.types.size = bfd_get_section_size (sectp); | |
10736 | } | |
10737 | } | |
10738 | ||
80626a55 | 10739 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10740 | |
80626a55 DE |
10741 | static hashval_t |
10742 | hash_dwp_loaded_cutus (const void *item) | |
10743 | { | |
10744 | const struct dwo_unit *dwo_unit = item; | |
3019eac3 | 10745 | |
80626a55 DE |
10746 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
10747 | return dwo_unit->signature; | |
3019eac3 DE |
10748 | } |
10749 | ||
80626a55 | 10750 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10751 | |
80626a55 DE |
10752 | static int |
10753 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 10754 | { |
80626a55 DE |
10755 | const struct dwo_unit *dua = a; |
10756 | const struct dwo_unit *dub = b; | |
3019eac3 | 10757 | |
80626a55 DE |
10758 | return dua->signature == dub->signature; |
10759 | } | |
3019eac3 | 10760 | |
80626a55 | 10761 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10762 | |
80626a55 DE |
10763 | static htab_t |
10764 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
10765 | { | |
10766 | return htab_create_alloc_ex (3, | |
10767 | hash_dwp_loaded_cutus, | |
10768 | eq_dwp_loaded_cutus, | |
10769 | NULL, | |
10770 | &objfile->objfile_obstack, | |
10771 | hashtab_obstack_allocate, | |
10772 | dummy_obstack_deallocate); | |
10773 | } | |
3019eac3 | 10774 | |
ab5088bf DE |
10775 | /* Try to open DWP file FILE_NAME. |
10776 | The result is the bfd handle of the file. | |
10777 | If there is a problem finding or opening the file, return NULL. | |
10778 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10779 | same as symfile_bfd_open. */ | |
10780 | ||
10781 | static bfd * | |
10782 | open_dwp_file (const char *file_name) | |
10783 | { | |
6ac97d4c DE |
10784 | bfd *abfd; |
10785 | ||
10786 | abfd = try_open_dwop_file (file_name, 1 /*is_dwp*/, 1 /*search_cwd*/); | |
10787 | if (abfd != NULL) | |
10788 | return abfd; | |
10789 | ||
10790 | /* Work around upstream bug 15652. | |
10791 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
10792 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
10793 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
10794 | of the executable's path may have discarded the needed info. | |
10795 | [IWBN if the dwp file name was recorded in the executable, akin to | |
10796 | .gnu_debuglink, but that doesn't exist yet.] | |
10797 | Strip the directory from FILE_NAME and search again. */ | |
10798 | if (*debug_file_directory != '\0') | |
10799 | { | |
10800 | /* Don't implicitly search the current directory here. | |
10801 | If the user wants to search "." to handle this case, | |
10802 | it must be added to debug-file-directory. */ | |
10803 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
10804 | 0 /*search_cwd*/); | |
10805 | } | |
10806 | ||
10807 | return NULL; | |
ab5088bf DE |
10808 | } |
10809 | ||
80626a55 DE |
10810 | /* Initialize the use of the DWP file for the current objfile. |
10811 | By convention the name of the DWP file is ${objfile}.dwp. | |
10812 | The result is NULL if it can't be found. */ | |
a766d390 | 10813 | |
80626a55 | 10814 | static struct dwp_file * |
ab5088bf | 10815 | open_and_init_dwp_file (void) |
80626a55 DE |
10816 | { |
10817 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10818 | struct dwp_file *dwp_file; | |
10819 | char *dwp_name; | |
10820 | bfd *dbfd; | |
10821 | struct cleanup *cleanups; | |
10822 | ||
82bf32bc JK |
10823 | /* Try to find first .dwp for the binary file before any symbolic links |
10824 | resolving. */ | |
10825 | dwp_name = xstrprintf ("%s.dwp", objfile->original_name); | |
80626a55 DE |
10826 | cleanups = make_cleanup (xfree, dwp_name); |
10827 | ||
ab5088bf | 10828 | dbfd = open_dwp_file (dwp_name); |
82bf32bc JK |
10829 | if (dbfd == NULL |
10830 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
10831 | { | |
10832 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
10833 | dwp_name = xstrprintf ("%s.dwp", objfile_name (objfile)); | |
10834 | make_cleanup (xfree, dwp_name); | |
10835 | dbfd = open_dwp_file (dwp_name); | |
10836 | } | |
10837 | ||
80626a55 DE |
10838 | if (dbfd == NULL) |
10839 | { | |
b4f54984 | 10840 | if (dwarf_read_debug) |
80626a55 DE |
10841 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); |
10842 | do_cleanups (cleanups); | |
10843 | return NULL; | |
3019eac3 | 10844 | } |
80626a55 | 10845 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
93417882 | 10846 | dwp_file->name = bfd_get_filename (dbfd); |
80626a55 DE |
10847 | dwp_file->dbfd = dbfd; |
10848 | do_cleanups (cleanups); | |
c906108c | 10849 | |
80626a55 DE |
10850 | /* +1: section 0 is unused */ |
10851 | dwp_file->num_sections = bfd_count_sections (dbfd) + 1; | |
10852 | dwp_file->elf_sections = | |
10853 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
10854 | dwp_file->num_sections, asection *); | |
10855 | ||
73869dc2 | 10856 | bfd_map_over_sections (dbfd, dwarf2_locate_common_dwp_sections, dwp_file); |
80626a55 DE |
10857 | |
10858 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
10859 | ||
10860 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
10861 | ||
73869dc2 DE |
10862 | /* The DWP file version is stored in the hash table. Oh well. */ |
10863 | if (dwp_file->cus->version != dwp_file->tus->version) | |
10864 | { | |
10865 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 10866 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 10867 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
10868 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
10869 | " TU version %s [in DWP file %s]"), | |
10870 | pulongest (dwp_file->cus->version), | |
10871 | pulongest (dwp_file->tus->version), dwp_name); | |
73869dc2 DE |
10872 | } |
10873 | dwp_file->version = dwp_file->cus->version; | |
10874 | ||
10875 | if (dwp_file->version == 2) | |
10876 | bfd_map_over_sections (dbfd, dwarf2_locate_v2_dwp_sections, dwp_file); | |
10877 | ||
19ac8c2e DE |
10878 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
10879 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 10880 | |
b4f54984 | 10881 | if (dwarf_read_debug) |
80626a55 DE |
10882 | { |
10883 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
10884 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
10885 | " %s CUs, %s TUs\n", |
10886 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
10887 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
10888 | } |
10889 | ||
10890 | return dwp_file; | |
3019eac3 | 10891 | } |
c906108c | 10892 | |
ab5088bf DE |
10893 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
10894 | ||
10895 | static struct dwp_file * | |
10896 | get_dwp_file (void) | |
10897 | { | |
10898 | if (! dwarf2_per_objfile->dwp_checked) | |
10899 | { | |
10900 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
10901 | dwarf2_per_objfile->dwp_checked = 1; | |
10902 | } | |
10903 | return dwarf2_per_objfile->dwp_file; | |
10904 | } | |
10905 | ||
80626a55 DE |
10906 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
10907 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
10908 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 10909 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
10910 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
10911 | ||
10912 | This is called, for example, when wanting to read a variable with a | |
10913 | complex location. Therefore we don't want to do file i/o for every call. | |
10914 | Therefore we don't want to look for a DWO file on every call. | |
10915 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
10916 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
10917 | for a DWO file. | |
10918 | ||
1c658ad5 | 10919 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 10920 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 10921 | |
3019eac3 | 10922 | static struct dwo_unit * |
80626a55 DE |
10923 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
10924 | const char *dwo_name, const char *comp_dir, | |
10925 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
10926 | { |
10927 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10928 | const char *kind = is_debug_types ? "TU" : "CU"; |
10929 | void **dwo_file_slot; | |
3019eac3 | 10930 | struct dwo_file *dwo_file; |
80626a55 | 10931 | struct dwp_file *dwp_file; |
cb1df416 | 10932 | |
6a506a2d DE |
10933 | /* First see if there's a DWP file. |
10934 | If we have a DWP file but didn't find the DWO inside it, don't | |
10935 | look for the original DWO file. It makes gdb behave differently | |
10936 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 10937 | |
ab5088bf | 10938 | dwp_file = get_dwp_file (); |
80626a55 | 10939 | if (dwp_file != NULL) |
cf2c3c16 | 10940 | { |
80626a55 DE |
10941 | const struct dwp_hash_table *dwp_htab = |
10942 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10943 | ||
10944 | if (dwp_htab != NULL) | |
10945 | { | |
10946 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
10947 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
10948 | signature, is_debug_types); | |
80626a55 DE |
10949 | |
10950 | if (dwo_cutu != NULL) | |
10951 | { | |
b4f54984 | 10952 | if (dwarf_read_debug) |
80626a55 DE |
10953 | { |
10954 | fprintf_unfiltered (gdb_stdlog, | |
10955 | "Virtual DWO %s %s found: @%s\n", | |
10956 | kind, hex_string (signature), | |
10957 | host_address_to_string (dwo_cutu)); | |
10958 | } | |
10959 | return dwo_cutu; | |
10960 | } | |
10961 | } | |
10962 | } | |
6a506a2d | 10963 | else |
80626a55 | 10964 | { |
6a506a2d | 10965 | /* No DWP file, look for the DWO file. */ |
80626a55 | 10966 | |
6a506a2d DE |
10967 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
10968 | if (*dwo_file_slot == NULL) | |
80626a55 | 10969 | { |
6a506a2d DE |
10970 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
10971 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 10972 | } |
6a506a2d DE |
10973 | /* NOTE: This will be NULL if unable to open the file. */ |
10974 | dwo_file = *dwo_file_slot; | |
3019eac3 | 10975 | |
6a506a2d | 10976 | if (dwo_file != NULL) |
19c3d4c9 | 10977 | { |
6a506a2d DE |
10978 | struct dwo_unit *dwo_cutu = NULL; |
10979 | ||
10980 | if (is_debug_types && dwo_file->tus) | |
10981 | { | |
10982 | struct dwo_unit find_dwo_cutu; | |
10983 | ||
10984 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
10985 | find_dwo_cutu.signature = signature; | |
10986 | dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu); | |
10987 | } | |
10988 | else if (!is_debug_types && dwo_file->cu) | |
80626a55 | 10989 | { |
6a506a2d DE |
10990 | if (signature == dwo_file->cu->signature) |
10991 | dwo_cutu = dwo_file->cu; | |
10992 | } | |
10993 | ||
10994 | if (dwo_cutu != NULL) | |
10995 | { | |
b4f54984 | 10996 | if (dwarf_read_debug) |
6a506a2d DE |
10997 | { |
10998 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
10999 | kind, dwo_name, hex_string (signature), | |
11000 | host_address_to_string (dwo_cutu)); | |
11001 | } | |
11002 | return dwo_cutu; | |
80626a55 DE |
11003 | } |
11004 | } | |
2e276125 | 11005 | } |
9cdd5dbd | 11006 | |
80626a55 DE |
11007 | /* We didn't find it. This could mean a dwo_id mismatch, or |
11008 | someone deleted the DWO/DWP file, or the search path isn't set up | |
11009 | correctly to find the file. */ | |
11010 | ||
b4f54984 | 11011 | if (dwarf_read_debug) |
80626a55 DE |
11012 | { |
11013 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
11014 | kind, dwo_name, hex_string (signature)); | |
11015 | } | |
3019eac3 | 11016 | |
6656a72d DE |
11017 | /* This is a warning and not a complaint because it can be caused by |
11018 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
11019 | { |
11020 | /* Print the name of the DWP file if we looked there, helps the user | |
11021 | better diagnose the problem. */ | |
11022 | char *dwp_text = NULL; | |
11023 | struct cleanup *cleanups; | |
11024 | ||
11025 | if (dwp_file != NULL) | |
11026 | dwp_text = xstrprintf (" [in DWP file %s]", lbasename (dwp_file->name)); | |
11027 | cleanups = make_cleanup (xfree, dwp_text); | |
11028 | ||
11029 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset 0x%x" | |
11030 | " [in module %s]"), | |
11031 | kind, dwo_name, hex_string (signature), | |
11032 | dwp_text != NULL ? dwp_text : "", | |
11033 | this_unit->is_debug_types ? "TU" : "CU", | |
11034 | this_unit->offset.sect_off, objfile_name (objfile)); | |
11035 | ||
11036 | do_cleanups (cleanups); | |
11037 | } | |
3019eac3 | 11038 | return NULL; |
5fb290d7 DJ |
11039 | } |
11040 | ||
80626a55 DE |
11041 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
11042 | See lookup_dwo_cutu_unit for details. */ | |
11043 | ||
11044 | static struct dwo_unit * | |
11045 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
11046 | const char *dwo_name, const char *comp_dir, | |
11047 | ULONGEST signature) | |
11048 | { | |
11049 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
11050 | } | |
11051 | ||
11052 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
11053 | See lookup_dwo_cutu_unit for details. */ | |
11054 | ||
11055 | static struct dwo_unit * | |
11056 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
11057 | const char *dwo_name, const char *comp_dir) | |
11058 | { | |
11059 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
11060 | } | |
11061 | ||
89e63ee4 DE |
11062 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
11063 | ||
11064 | static int | |
11065 | queue_and_load_dwo_tu (void **slot, void *info) | |
11066 | { | |
11067 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
11068 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
11069 | ULONGEST signature = dwo_unit->signature; | |
11070 | struct signatured_type *sig_type = | |
11071 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
11072 | ||
11073 | if (sig_type != NULL) | |
11074 | { | |
11075 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
11076 | ||
11077 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
11078 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
11079 | while processing PER_CU. */ | |
11080 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
11081 | load_full_type_unit (sig_cu); | |
11082 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
11083 | } | |
11084 | ||
11085 | return 1; | |
11086 | } | |
11087 | ||
11088 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
11089 | The DWO may have the only definition of the type, though it may not be | |
11090 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
11091 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
11092 | ||
11093 | static void | |
11094 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
11095 | { | |
11096 | struct dwo_unit *dwo_unit; | |
11097 | struct dwo_file *dwo_file; | |
11098 | ||
11099 | gdb_assert (!per_cu->is_debug_types); | |
11100 | gdb_assert (get_dwp_file () == NULL); | |
11101 | gdb_assert (per_cu->cu != NULL); | |
11102 | ||
11103 | dwo_unit = per_cu->cu->dwo_unit; | |
11104 | gdb_assert (dwo_unit != NULL); | |
11105 | ||
11106 | dwo_file = dwo_unit->dwo_file; | |
11107 | if (dwo_file->tus != NULL) | |
11108 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
11109 | } | |
11110 | ||
3019eac3 DE |
11111 | /* Free all resources associated with DWO_FILE. |
11112 | Close the DWO file and munmap the sections. | |
11113 | All memory should be on the objfile obstack. */ | |
348e048f DE |
11114 | |
11115 | static void | |
3019eac3 | 11116 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 11117 | { |
3019eac3 DE |
11118 | int ix; |
11119 | struct dwarf2_section_info *section; | |
348e048f | 11120 | |
5c6fa7ab | 11121 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 11122 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 11123 | |
3019eac3 DE |
11124 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
11125 | } | |
348e048f | 11126 | |
3019eac3 | 11127 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 11128 | |
3019eac3 DE |
11129 | static void |
11130 | free_dwo_file_cleanup (void *arg) | |
11131 | { | |
11132 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
11133 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 11134 | |
3019eac3 DE |
11135 | free_dwo_file (dwo_file, objfile); |
11136 | } | |
348e048f | 11137 | |
3019eac3 | 11138 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 11139 | |
3019eac3 DE |
11140 | static int |
11141 | free_dwo_file_from_slot (void **slot, void *info) | |
11142 | { | |
11143 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
11144 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 11145 | |
3019eac3 | 11146 | free_dwo_file (dwo_file, objfile); |
348e048f | 11147 | |
3019eac3 DE |
11148 | return 1; |
11149 | } | |
348e048f | 11150 | |
3019eac3 | 11151 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 11152 | |
3019eac3 DE |
11153 | static void |
11154 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
11155 | { | |
11156 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 11157 | } |
3019eac3 DE |
11158 | \f |
11159 | /* Read in various DIEs. */ | |
348e048f | 11160 | |
d389af10 JK |
11161 | /* qsort helper for inherit_abstract_dies. */ |
11162 | ||
11163 | static int | |
11164 | unsigned_int_compar (const void *ap, const void *bp) | |
11165 | { | |
11166 | unsigned int a = *(unsigned int *) ap; | |
11167 | unsigned int b = *(unsigned int *) bp; | |
11168 | ||
11169 | return (a > b) - (b > a); | |
11170 | } | |
11171 | ||
11172 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
11173 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
11174 | already referenced by DW_AT_abstract_origin from the children of the | |
11175 | current DIE. */ | |
d389af10 JK |
11176 | |
11177 | static void | |
11178 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
11179 | { | |
11180 | struct die_info *child_die; | |
11181 | unsigned die_children_count; | |
11182 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
11183 | sect_offset *offsets; |
11184 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
11185 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
11186 | struct die_info *origin_die; | |
11187 | /* Iterator of the ORIGIN_DIE children. */ | |
11188 | struct die_info *origin_child_die; | |
11189 | struct cleanup *cleanups; | |
11190 | struct attribute *attr; | |
cd02d79d PA |
11191 | struct dwarf2_cu *origin_cu; |
11192 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
11193 | |
11194 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11195 | if (!attr) | |
11196 | return; | |
11197 | ||
cd02d79d PA |
11198 | /* Note that following die references may follow to a die in a |
11199 | different cu. */ | |
11200 | ||
11201 | origin_cu = cu; | |
11202 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
11203 | ||
11204 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
11205 | symbols in. */ | |
11206 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
11207 | origin_cu->list_in_scope = cu->list_in_scope; | |
11208 | ||
edb3359d DJ |
11209 | if (die->tag != origin_die->tag |
11210 | && !(die->tag == DW_TAG_inlined_subroutine | |
11211 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11212 | complaint (&symfile_complaints, |
11213 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 11214 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
11215 | |
11216 | child_die = die->child; | |
11217 | die_children_count = 0; | |
11218 | while (child_die && child_die->tag) | |
11219 | { | |
11220 | child_die = sibling_die (child_die); | |
11221 | die_children_count++; | |
11222 | } | |
11223 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
11224 | cleanups = make_cleanup (xfree, offsets); | |
11225 | ||
11226 | offsets_end = offsets; | |
3ea89b92 PMR |
11227 | for (child_die = die->child; |
11228 | child_die && child_die->tag; | |
11229 | child_die = sibling_die (child_die)) | |
11230 | { | |
11231 | struct die_info *child_origin_die; | |
11232 | struct dwarf2_cu *child_origin_cu; | |
11233 | ||
11234 | /* We are trying to process concrete instance entries: | |
11235 | DW_TAG_GNU_call_site DIEs indeed have a DW_AT_abstract_origin tag, but | |
11236 | it's not relevant to our analysis here. i.e. detecting DIEs that are | |
11237 | present in the abstract instance but not referenced in the concrete | |
11238 | one. */ | |
11239 | if (child_die->tag == DW_TAG_GNU_call_site) | |
11240 | continue; | |
11241 | ||
c38f313d DJ |
11242 | /* For each CHILD_DIE, find the corresponding child of |
11243 | ORIGIN_DIE. If there is more than one layer of | |
11244 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
11245 | but GCC versions at least through 4.4 generate this (GCC PR | |
11246 | 40573). */ | |
3ea89b92 PMR |
11247 | child_origin_die = child_die; |
11248 | child_origin_cu = cu; | |
c38f313d DJ |
11249 | while (1) |
11250 | { | |
cd02d79d PA |
11251 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
11252 | child_origin_cu); | |
c38f313d DJ |
11253 | if (attr == NULL) |
11254 | break; | |
cd02d79d PA |
11255 | child_origin_die = follow_die_ref (child_origin_die, attr, |
11256 | &child_origin_cu); | |
c38f313d DJ |
11257 | } |
11258 | ||
d389af10 JK |
11259 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
11260 | counterpart may exist. */ | |
c38f313d | 11261 | if (child_origin_die != child_die) |
d389af10 | 11262 | { |
edb3359d DJ |
11263 | if (child_die->tag != child_origin_die->tag |
11264 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
11265 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11266 | complaint (&symfile_complaints, |
11267 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11268 | "different tags"), child_die->offset.sect_off, |
11269 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11270 | if (child_origin_die->parent != origin_die) |
11271 | complaint (&symfile_complaints, | |
11272 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11273 | "different parents"), child_die->offset.sect_off, |
11274 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11275 | else |
11276 | *offsets_end++ = child_origin_die->offset; | |
d389af10 | 11277 | } |
d389af10 JK |
11278 | } |
11279 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
11280 | unsigned_int_compar); | |
11281 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 11282 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
11283 | complaint (&symfile_complaints, |
11284 | _("Multiple children of DIE 0x%x refer " | |
11285 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 11286 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
11287 | |
11288 | offsetp = offsets; | |
11289 | origin_child_die = origin_die->child; | |
11290 | while (origin_child_die && origin_child_die->tag) | |
11291 | { | |
11292 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
11293 | while (offsetp < offsets_end |
11294 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 11295 | offsetp++; |
b64f50a1 JK |
11296 | if (offsetp >= offsets_end |
11297 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 | 11298 | { |
adde2bff DE |
11299 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
11300 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
11301 | This can happen with mutually referenced abstract_origins. | |
11302 | PR 16581. */ | |
11303 | if (!origin_child_die->in_process) | |
11304 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
11305 | } |
11306 | origin_child_die = sibling_die (origin_child_die); | |
11307 | } | |
cd02d79d | 11308 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
11309 | |
11310 | do_cleanups (cleanups); | |
11311 | } | |
11312 | ||
c906108c | 11313 | static void |
e7c27a73 | 11314 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11315 | { |
e7c27a73 | 11316 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11317 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11318 | struct context_stack *newobj; |
c906108c SS |
11319 | CORE_ADDR lowpc; |
11320 | CORE_ADDR highpc; | |
11321 | struct die_info *child_die; | |
edb3359d | 11322 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 11323 | const char *name; |
e142c38c | 11324 | CORE_ADDR baseaddr; |
801e3a5b | 11325 | struct block *block; |
edb3359d | 11326 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
11327 | VEC (symbolp) *template_args = NULL; |
11328 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
11329 | |
11330 | if (inlined_func) | |
11331 | { | |
11332 | /* If we do not have call site information, we can't show the | |
11333 | caller of this inlined function. That's too confusing, so | |
11334 | only use the scope for local variables. */ | |
11335 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
11336 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
11337 | if (call_line == NULL || call_file == NULL) | |
11338 | { | |
11339 | read_lexical_block_scope (die, cu); | |
11340 | return; | |
11341 | } | |
11342 | } | |
c906108c | 11343 | |
e142c38c DJ |
11344 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
11345 | ||
94af9270 | 11346 | name = dwarf2_name (die, cu); |
c906108c | 11347 | |
e8d05480 JB |
11348 | /* Ignore functions with missing or empty names. These are actually |
11349 | illegal according to the DWARF standard. */ | |
11350 | if (name == NULL) | |
11351 | { | |
11352 | complaint (&symfile_complaints, | |
b64f50a1 JK |
11353 | _("missing name for subprogram DIE at %d"), |
11354 | die->offset.sect_off); | |
e8d05480 JB |
11355 | return; |
11356 | } | |
11357 | ||
11358 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
11359 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
11360 | { | |
ae4d0c03 PM |
11361 | attr = dwarf2_attr (die, DW_AT_external, cu); |
11362 | if (!attr || !DW_UNSND (attr)) | |
11363 | complaint (&symfile_complaints, | |
3e43a32a MS |
11364 | _("cannot get low and high bounds " |
11365 | "for subprogram DIE at %d"), | |
b64f50a1 | 11366 | die->offset.sect_off); |
e8d05480 JB |
11367 | return; |
11368 | } | |
c906108c | 11369 | |
3e29f34a MR |
11370 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11371 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 11372 | |
34eaf542 TT |
11373 | /* If we have any template arguments, then we must allocate a |
11374 | different sort of symbol. */ | |
11375 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
11376 | { | |
11377 | if (child_die->tag == DW_TAG_template_type_param | |
11378 | || child_die->tag == DW_TAG_template_value_param) | |
11379 | { | |
e623cf5d | 11380 | templ_func = allocate_template_symbol (objfile); |
34eaf542 TT |
11381 | templ_func->base.is_cplus_template_function = 1; |
11382 | break; | |
11383 | } | |
11384 | } | |
11385 | ||
fe978cb0 PA |
11386 | newobj = push_context (0, lowpc); |
11387 | newobj->name = new_symbol_full (die, read_type_die (die, cu), cu, | |
34eaf542 | 11388 | (struct symbol *) templ_func); |
4c2df51b | 11389 | |
4cecd739 DJ |
11390 | /* If there is a location expression for DW_AT_frame_base, record |
11391 | it. */ | |
e142c38c | 11392 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 11393 | if (attr) |
fe978cb0 | 11394 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 11395 | |
e142c38c | 11396 | cu->list_in_scope = &local_symbols; |
c906108c | 11397 | |
639d11d3 | 11398 | if (die->child != NULL) |
c906108c | 11399 | { |
639d11d3 | 11400 | child_die = die->child; |
c906108c SS |
11401 | while (child_die && child_die->tag) |
11402 | { | |
34eaf542 TT |
11403 | if (child_die->tag == DW_TAG_template_type_param |
11404 | || child_die->tag == DW_TAG_template_value_param) | |
11405 | { | |
11406 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
11407 | ||
f1078f66 DJ |
11408 | if (arg != NULL) |
11409 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
11410 | } |
11411 | else | |
11412 | process_die (child_die, cu); | |
c906108c SS |
11413 | child_die = sibling_die (child_die); |
11414 | } | |
11415 | } | |
11416 | ||
d389af10 JK |
11417 | inherit_abstract_dies (die, cu); |
11418 | ||
4a811a97 UW |
11419 | /* If we have a DW_AT_specification, we might need to import using |
11420 | directives from the context of the specification DIE. See the | |
11421 | comment in determine_prefix. */ | |
11422 | if (cu->language == language_cplus | |
11423 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
11424 | { | |
11425 | struct dwarf2_cu *spec_cu = cu; | |
11426 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
11427 | ||
11428 | while (spec_die) | |
11429 | { | |
11430 | child_die = spec_die->child; | |
11431 | while (child_die && child_die->tag) | |
11432 | { | |
11433 | if (child_die->tag == DW_TAG_imported_module) | |
11434 | process_die (child_die, spec_cu); | |
11435 | child_die = sibling_die (child_die); | |
11436 | } | |
11437 | ||
11438 | /* In some cases, GCC generates specification DIEs that | |
11439 | themselves contain DW_AT_specification attributes. */ | |
11440 | spec_die = die_specification (spec_die, &spec_cu); | |
11441 | } | |
11442 | } | |
11443 | ||
fe978cb0 | 11444 | newobj = pop_context (); |
c906108c | 11445 | /* Make a block for the local symbols within. */ |
fe978cb0 | 11446 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
4d663531 | 11447 | lowpc, highpc); |
801e3a5b | 11448 | |
df8a16a1 | 11449 | /* For C++, set the block's scope. */ |
45280282 IB |
11450 | if ((cu->language == language_cplus |
11451 | || cu->language == language_fortran | |
11452 | || cu->language == language_d) | |
4d4ec4e5 | 11453 | && cu->processing_has_namespace_info) |
195a3f6c TT |
11454 | block_set_scope (block, determine_prefix (die, cu), |
11455 | &objfile->objfile_obstack); | |
df8a16a1 | 11456 | |
801e3a5b JB |
11457 | /* If we have address ranges, record them. */ |
11458 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 11459 | |
fe978cb0 | 11460 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 11461 | |
34eaf542 TT |
11462 | /* Attach template arguments to function. */ |
11463 | if (! VEC_empty (symbolp, template_args)) | |
11464 | { | |
11465 | gdb_assert (templ_func != NULL); | |
11466 | ||
11467 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
11468 | templ_func->template_arguments | |
11469 | = obstack_alloc (&objfile->objfile_obstack, | |
11470 | (templ_func->n_template_arguments | |
11471 | * sizeof (struct symbol *))); | |
11472 | memcpy (templ_func->template_arguments, | |
11473 | VEC_address (symbolp, template_args), | |
11474 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
11475 | VEC_free (symbolp, template_args); | |
11476 | } | |
11477 | ||
208d8187 JB |
11478 | /* In C++, we can have functions nested inside functions (e.g., when |
11479 | a function declares a class that has methods). This means that | |
11480 | when we finish processing a function scope, we may need to go | |
11481 | back to building a containing block's symbol lists. */ | |
fe978cb0 PA |
11482 | local_symbols = newobj->locals; |
11483 | using_directives = newobj->using_directives; | |
208d8187 | 11484 | |
921e78cf JB |
11485 | /* If we've finished processing a top-level function, subsequent |
11486 | symbols go in the file symbol list. */ | |
11487 | if (outermost_context_p ()) | |
e142c38c | 11488 | cu->list_in_scope = &file_symbols; |
c906108c SS |
11489 | } |
11490 | ||
11491 | /* Process all the DIES contained within a lexical block scope. Start | |
11492 | a new scope, process the dies, and then close the scope. */ | |
11493 | ||
11494 | static void | |
e7c27a73 | 11495 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11496 | { |
e7c27a73 | 11497 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11498 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11499 | struct context_stack *newobj; |
c906108c SS |
11500 | CORE_ADDR lowpc, highpc; |
11501 | struct die_info *child_die; | |
e142c38c DJ |
11502 | CORE_ADDR baseaddr; |
11503 | ||
11504 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
11505 | |
11506 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
11507 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
11508 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 11509 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 11510 | describe ranges. */ |
d85a05f0 | 11511 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c | 11512 | return; |
3e29f34a MR |
11513 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11514 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
11515 | |
11516 | push_context (0, lowpc); | |
639d11d3 | 11517 | if (die->child != NULL) |
c906108c | 11518 | { |
639d11d3 | 11519 | child_die = die->child; |
c906108c SS |
11520 | while (child_die && child_die->tag) |
11521 | { | |
e7c27a73 | 11522 | process_die (child_die, cu); |
c906108c SS |
11523 | child_die = sibling_die (child_die); |
11524 | } | |
11525 | } | |
3ea89b92 | 11526 | inherit_abstract_dies (die, cu); |
fe978cb0 | 11527 | newobj = pop_context (); |
c906108c | 11528 | |
8540c487 | 11529 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 11530 | { |
801e3a5b | 11531 | struct block *block |
fe978cb0 PA |
11532 | = finish_block (0, &local_symbols, newobj->old_blocks, |
11533 | newobj->start_addr, highpc); | |
801e3a5b JB |
11534 | |
11535 | /* Note that recording ranges after traversing children, as we | |
11536 | do here, means that recording a parent's ranges entails | |
11537 | walking across all its children's ranges as they appear in | |
11538 | the address map, which is quadratic behavior. | |
11539 | ||
11540 | It would be nicer to record the parent's ranges before | |
11541 | traversing its children, simply overriding whatever you find | |
11542 | there. But since we don't even decide whether to create a | |
11543 | block until after we've traversed its children, that's hard | |
11544 | to do. */ | |
11545 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 11546 | } |
fe978cb0 PA |
11547 | local_symbols = newobj->locals; |
11548 | using_directives = newobj->using_directives; | |
c906108c SS |
11549 | } |
11550 | ||
96408a79 SA |
11551 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
11552 | ||
11553 | static void | |
11554 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11555 | { | |
11556 | struct objfile *objfile = cu->objfile; | |
11557 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11558 | CORE_ADDR pc, baseaddr; | |
11559 | struct attribute *attr; | |
11560 | struct call_site *call_site, call_site_local; | |
11561 | void **slot; | |
11562 | int nparams; | |
11563 | struct die_info *child_die; | |
11564 | ||
11565 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
11566 | ||
11567 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
11568 | if (!attr) | |
11569 | { | |
11570 | complaint (&symfile_complaints, | |
11571 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
11572 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11573 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11574 | return; |
11575 | } | |
31aa7e4e | 11576 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 11577 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
11578 | |
11579 | if (cu->call_site_htab == NULL) | |
11580 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
11581 | NULL, &objfile->objfile_obstack, | |
11582 | hashtab_obstack_allocate, NULL); | |
11583 | call_site_local.pc = pc; | |
11584 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
11585 | if (*slot != NULL) | |
11586 | { | |
11587 | complaint (&symfile_complaints, | |
11588 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
11589 | "DIE 0x%x [in module %s]"), | |
4262abfb JK |
11590 | paddress (gdbarch, pc), die->offset.sect_off, |
11591 | objfile_name (objfile)); | |
96408a79 SA |
11592 | return; |
11593 | } | |
11594 | ||
11595 | /* Count parameters at the caller. */ | |
11596 | ||
11597 | nparams = 0; | |
11598 | for (child_die = die->child; child_die && child_die->tag; | |
11599 | child_die = sibling_die (child_die)) | |
11600 | { | |
11601 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11602 | { | |
11603 | complaint (&symfile_complaints, | |
11604 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
11605 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb JK |
11606 | child_die->tag, child_die->offset.sect_off, |
11607 | objfile_name (objfile)); | |
96408a79 SA |
11608 | continue; |
11609 | } | |
11610 | ||
11611 | nparams++; | |
11612 | } | |
11613 | ||
11614 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
11615 | (sizeof (*call_site) | |
11616 | + (sizeof (*call_site->parameter) | |
11617 | * (nparams - 1)))); | |
11618 | *slot = call_site; | |
11619 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
11620 | call_site->pc = pc; | |
11621 | ||
11622 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
11623 | { | |
11624 | struct die_info *func_die; | |
11625 | ||
11626 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
11627 | for (func_die = die->parent; | |
11628 | func_die && func_die->tag != DW_TAG_subprogram | |
11629 | && func_die->tag != DW_TAG_subroutine_type; | |
11630 | func_die = func_die->parent); | |
11631 | ||
11632 | /* DW_AT_GNU_all_call_sites is a superset | |
11633 | of DW_AT_GNU_all_tail_call_sites. */ | |
11634 | if (func_die | |
11635 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
11636 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
11637 | { | |
11638 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
11639 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
11640 | both the initial caller containing the real return address PC and | |
11641 | the final callee containing the current PC of a chain of tail | |
11642 | calls do not need to have the tail call list complete. But any | |
11643 | function candidate for a virtual tail call frame searched via | |
11644 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
11645 | determined unambiguously. */ | |
11646 | } | |
11647 | else | |
11648 | { | |
11649 | struct type *func_type = NULL; | |
11650 | ||
11651 | if (func_die) | |
11652 | func_type = get_die_type (func_die, cu); | |
11653 | if (func_type != NULL) | |
11654 | { | |
11655 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
11656 | ||
11657 | /* Enlist this call site to the function. */ | |
11658 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
11659 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
11660 | } | |
11661 | else | |
11662 | complaint (&symfile_complaints, | |
11663 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
11664 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11665 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11666 | } |
11667 | } | |
11668 | ||
11669 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
11670 | if (attr == NULL) | |
11671 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11672 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
11673 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
11674 | /* Keep NULL DWARF_BLOCK. */; | |
11675 | else if (attr_form_is_block (attr)) | |
11676 | { | |
11677 | struct dwarf2_locexpr_baton *dlbaton; | |
11678 | ||
11679 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
11680 | dlbaton->data = DW_BLOCK (attr)->data; | |
11681 | dlbaton->size = DW_BLOCK (attr)->size; | |
11682 | dlbaton->per_cu = cu->per_cu; | |
11683 | ||
11684 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
11685 | } | |
7771576e | 11686 | else if (attr_form_is_ref (attr)) |
96408a79 | 11687 | { |
96408a79 SA |
11688 | struct dwarf2_cu *target_cu = cu; |
11689 | struct die_info *target_die; | |
11690 | ||
ac9ec31b | 11691 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
11692 | gdb_assert (target_cu->objfile == objfile); |
11693 | if (die_is_declaration (target_die, target_cu)) | |
11694 | { | |
9112db09 JK |
11695 | const char *target_physname = NULL; |
11696 | struct attribute *target_attr; | |
11697 | ||
11698 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
11699 | target_attr = dwarf2_attr (target_die, DW_AT_linkage_name, target_cu); | |
11700 | if (target_attr == NULL) | |
11701 | target_attr = dwarf2_attr (target_die, DW_AT_MIPS_linkage_name, | |
11702 | target_cu); | |
11703 | if (target_attr != NULL && DW_STRING (target_attr) != NULL) | |
11704 | target_physname = DW_STRING (target_attr); | |
11705 | else | |
11706 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
96408a79 SA |
11707 | if (target_physname == NULL) |
11708 | complaint (&symfile_complaints, | |
11709 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11710 | "physname, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11711 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11712 | else |
7d455152 | 11713 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
11714 | } |
11715 | else | |
11716 | { | |
11717 | CORE_ADDR lowpc; | |
11718 | ||
11719 | /* DW_AT_entry_pc should be preferred. */ | |
11720 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
11721 | complaint (&symfile_complaints, | |
11722 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11723 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11724 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11725 | else |
3e29f34a MR |
11726 | { |
11727 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
11728 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
11729 | } | |
96408a79 SA |
11730 | } |
11731 | } | |
11732 | else | |
11733 | complaint (&symfile_complaints, | |
11734 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
11735 | "block nor reference, for DIE 0x%x [in module %s]"), | |
4262abfb | 11736 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11737 | |
11738 | call_site->per_cu = cu->per_cu; | |
11739 | ||
11740 | for (child_die = die->child; | |
11741 | child_die && child_die->tag; | |
11742 | child_die = sibling_die (child_die)) | |
11743 | { | |
96408a79 | 11744 | struct call_site_parameter *parameter; |
1788b2d3 | 11745 | struct attribute *loc, *origin; |
96408a79 SA |
11746 | |
11747 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11748 | { | |
11749 | /* Already printed the complaint above. */ | |
11750 | continue; | |
11751 | } | |
11752 | ||
11753 | gdb_assert (call_site->parameter_count < nparams); | |
11754 | parameter = &call_site->parameter[call_site->parameter_count]; | |
11755 | ||
1788b2d3 JK |
11756 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
11757 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
11758 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 11759 | |
24c5c679 | 11760 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 | 11761 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
7771576e | 11762 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 JK |
11763 | { |
11764 | sect_offset offset; | |
11765 | ||
11766 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
11767 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
11768 | if (!offset_in_cu_p (&cu->header, offset)) |
11769 | { | |
11770 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
11771 | binding can be done only inside one CU. Such referenced DIE | |
11772 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
11773 | complaint (&symfile_complaints, | |
11774 | _("DW_AT_abstract_origin offset is not in CU for " | |
11775 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11776 | "[in module %s]"), | |
4262abfb | 11777 | child_die->offset.sect_off, objfile_name (objfile)); |
d76b7dbc JK |
11778 | continue; |
11779 | } | |
1788b2d3 JK |
11780 | parameter->u.param_offset.cu_off = (offset.sect_off |
11781 | - cu->header.offset.sect_off); | |
11782 | } | |
11783 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
11784 | { |
11785 | complaint (&symfile_complaints, | |
11786 | _("No DW_FORM_block* DW_AT_location for " | |
11787 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11788 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11789 | continue; |
11790 | } | |
24c5c679 | 11791 | else |
96408a79 | 11792 | { |
24c5c679 JK |
11793 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
11794 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
11795 | if (parameter->u.dwarf_reg != -1) | |
11796 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
11797 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
11798 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
11799 | ¶meter->u.fb_offset)) | |
11800 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
11801 | else | |
11802 | { | |
11803 | complaint (&symfile_complaints, | |
11804 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
11805 | "for DW_FORM_block* DW_AT_location is supported for " | |
11806 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11807 | "[in module %s]"), | |
4262abfb | 11808 | child_die->offset.sect_off, objfile_name (objfile)); |
24c5c679 JK |
11809 | continue; |
11810 | } | |
96408a79 SA |
11811 | } |
11812 | ||
11813 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
11814 | if (!attr_form_is_block (attr)) | |
11815 | { | |
11816 | complaint (&symfile_complaints, | |
11817 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
11818 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11819 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11820 | continue; |
11821 | } | |
11822 | parameter->value = DW_BLOCK (attr)->data; | |
11823 | parameter->value_size = DW_BLOCK (attr)->size; | |
11824 | ||
11825 | /* Parameters are not pre-cleared by memset above. */ | |
11826 | parameter->data_value = NULL; | |
11827 | parameter->data_value_size = 0; | |
11828 | call_site->parameter_count++; | |
11829 | ||
11830 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
11831 | if (attr) | |
11832 | { | |
11833 | if (!attr_form_is_block (attr)) | |
11834 | complaint (&symfile_complaints, | |
11835 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
11836 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11837 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11838 | else |
11839 | { | |
11840 | parameter->data_value = DW_BLOCK (attr)->data; | |
11841 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
11842 | } | |
11843 | } | |
11844 | } | |
11845 | } | |
11846 | ||
43039443 | 11847 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
11848 | Return 1 if the attributes are present and valid, otherwise, return 0. |
11849 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
11850 | |
11851 | static int | |
11852 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
11853 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
11854 | struct partial_symtab *ranges_pst) | |
43039443 JK |
11855 | { |
11856 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 11857 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
43039443 JK |
11858 | struct comp_unit_head *cu_header = &cu->header; |
11859 | bfd *obfd = objfile->obfd; | |
11860 | unsigned int addr_size = cu_header->addr_size; | |
11861 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11862 | /* Base address selection entry. */ | |
11863 | CORE_ADDR base; | |
11864 | int found_base; | |
11865 | unsigned int dummy; | |
d521ce57 | 11866 | const gdb_byte *buffer; |
43039443 JK |
11867 | CORE_ADDR marker; |
11868 | int low_set; | |
11869 | CORE_ADDR low = 0; | |
11870 | CORE_ADDR high = 0; | |
ff013f42 | 11871 | CORE_ADDR baseaddr; |
43039443 | 11872 | |
d00adf39 DE |
11873 | found_base = cu->base_known; |
11874 | base = cu->base_address; | |
43039443 | 11875 | |
be391dca | 11876 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11877 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
11878 | { |
11879 | complaint (&symfile_complaints, | |
11880 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
11881 | offset); | |
11882 | return 0; | |
11883 | } | |
dce234bc | 11884 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
11885 | |
11886 | /* Read in the largest possible address. */ | |
11887 | marker = read_address (obfd, buffer, cu, &dummy); | |
11888 | if ((marker & mask) == mask) | |
11889 | { | |
11890 | /* If we found the largest possible address, then | |
11891 | read the base address. */ | |
11892 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11893 | buffer += 2 * addr_size; | |
11894 | offset += 2 * addr_size; | |
11895 | found_base = 1; | |
11896 | } | |
11897 | ||
11898 | low_set = 0; | |
11899 | ||
e7030f15 | 11900 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 11901 | |
43039443 JK |
11902 | while (1) |
11903 | { | |
11904 | CORE_ADDR range_beginning, range_end; | |
11905 | ||
11906 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
11907 | buffer += addr_size; | |
11908 | range_end = read_address (obfd, buffer, cu, &dummy); | |
11909 | buffer += addr_size; | |
11910 | offset += 2 * addr_size; | |
11911 | ||
11912 | /* An end of list marker is a pair of zero addresses. */ | |
11913 | if (range_beginning == 0 && range_end == 0) | |
11914 | /* Found the end of list entry. */ | |
11915 | break; | |
11916 | ||
11917 | /* Each base address selection entry is a pair of 2 values. | |
11918 | The first is the largest possible address, the second is | |
11919 | the base address. Check for a base address here. */ | |
11920 | if ((range_beginning & mask) == mask) | |
11921 | { | |
11922 | /* If we found the largest possible address, then | |
11923 | read the base address. */ | |
11924 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11925 | found_base = 1; | |
11926 | continue; | |
11927 | } | |
11928 | ||
11929 | if (!found_base) | |
11930 | { | |
11931 | /* We have no valid base address for the ranges | |
11932 | data. */ | |
11933 | complaint (&symfile_complaints, | |
11934 | _("Invalid .debug_ranges data (no base address)")); | |
11935 | return 0; | |
11936 | } | |
11937 | ||
9277c30c UW |
11938 | if (range_beginning > range_end) |
11939 | { | |
11940 | /* Inverted range entries are invalid. */ | |
11941 | complaint (&symfile_complaints, | |
11942 | _("Invalid .debug_ranges data (inverted range)")); | |
11943 | return 0; | |
11944 | } | |
11945 | ||
11946 | /* Empty range entries have no effect. */ | |
11947 | if (range_beginning == range_end) | |
11948 | continue; | |
11949 | ||
43039443 JK |
11950 | range_beginning += base; |
11951 | range_end += base; | |
11952 | ||
01093045 DE |
11953 | /* A not-uncommon case of bad debug info. |
11954 | Don't pollute the addrmap with bad data. */ | |
11955 | if (range_beginning + baseaddr == 0 | |
11956 | && !dwarf2_per_objfile->has_section_at_zero) | |
11957 | { | |
11958 | complaint (&symfile_complaints, | |
11959 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11960 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11961 | continue; |
11962 | } | |
11963 | ||
9277c30c | 11964 | if (ranges_pst != NULL) |
3e29f34a MR |
11965 | { |
11966 | CORE_ADDR lowpc; | |
11967 | CORE_ADDR highpc; | |
11968 | ||
11969 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
11970 | range_beginning + baseaddr); | |
11971 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
11972 | range_end + baseaddr); | |
11973 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
11974 | ranges_pst); | |
11975 | } | |
ff013f42 | 11976 | |
43039443 JK |
11977 | /* FIXME: This is recording everything as a low-high |
11978 | segment of consecutive addresses. We should have a | |
11979 | data structure for discontiguous block ranges | |
11980 | instead. */ | |
11981 | if (! low_set) | |
11982 | { | |
11983 | low = range_beginning; | |
11984 | high = range_end; | |
11985 | low_set = 1; | |
11986 | } | |
11987 | else | |
11988 | { | |
11989 | if (range_beginning < low) | |
11990 | low = range_beginning; | |
11991 | if (range_end > high) | |
11992 | high = range_end; | |
11993 | } | |
11994 | } | |
11995 | ||
11996 | if (! low_set) | |
11997 | /* If the first entry is an end-of-list marker, the range | |
11998 | describes an empty scope, i.e. no instructions. */ | |
11999 | return 0; | |
12000 | ||
12001 | if (low_return) | |
12002 | *low_return = low; | |
12003 | if (high_return) | |
12004 | *high_return = high; | |
12005 | return 1; | |
12006 | } | |
12007 | ||
af34e669 DJ |
12008 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
12009 | are present and valid, otherwise, return 0. Return -1 if the range is | |
12010 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 12011 | |
c906108c | 12012 | static int |
af34e669 | 12013 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
12014 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
12015 | struct partial_symtab *pst) | |
c906108c SS |
12016 | { |
12017 | struct attribute *attr; | |
91da1414 | 12018 | struct attribute *attr_high; |
af34e669 DJ |
12019 | CORE_ADDR low = 0; |
12020 | CORE_ADDR high = 0; | |
12021 | int ret = 0; | |
c906108c | 12022 | |
91da1414 MW |
12023 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12024 | if (attr_high) | |
af34e669 | 12025 | { |
e142c38c | 12026 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 12027 | if (attr) |
91da1414 | 12028 | { |
31aa7e4e JB |
12029 | low = attr_value_as_address (attr); |
12030 | high = attr_value_as_address (attr_high); | |
12031 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12032 | high += low; | |
91da1414 | 12033 | } |
af34e669 DJ |
12034 | else |
12035 | /* Found high w/o low attribute. */ | |
12036 | return 0; | |
12037 | ||
12038 | /* Found consecutive range of addresses. */ | |
12039 | ret = 1; | |
12040 | } | |
c906108c | 12041 | else |
af34e669 | 12042 | { |
e142c38c | 12043 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
12044 | if (attr != NULL) |
12045 | { | |
ab435259 DE |
12046 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12047 | We take advantage of the fact that DW_AT_ranges does not appear | |
12048 | in DW_TAG_compile_unit of DWO files. */ | |
12049 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
12050 | unsigned int ranges_offset = (DW_UNSND (attr) | |
12051 | + (need_ranges_base | |
12052 | ? cu->ranges_base | |
12053 | : 0)); | |
2e3cf129 | 12054 | |
af34e669 | 12055 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 12056 | .debug_ranges section. */ |
2e3cf129 | 12057 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 12058 | return 0; |
43039443 | 12059 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
12060 | ret = -1; |
12061 | } | |
12062 | } | |
c906108c | 12063 | |
9373cf26 JK |
12064 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
12065 | if (high <= low) | |
c906108c SS |
12066 | return 0; |
12067 | ||
12068 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
12069 | eliminate duplicate copies of functions and vtables and such. | |
12070 | The linker will arbitrarily choose one and discard the others. | |
12071 | The AT_*_pc values for such functions refer to local labels in | |
12072 | these sections. If the section from that file was discarded, the | |
12073 | labels are not in the output, so the relocs get a value of 0. | |
12074 | If this is a discarded function, mark the pc bounds as invalid, | |
12075 | so that GDB will ignore it. */ | |
72dca2f5 | 12076 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
12077 | return 0; |
12078 | ||
12079 | *lowpc = low; | |
96408a79 SA |
12080 | if (highpc) |
12081 | *highpc = high; | |
af34e669 | 12082 | return ret; |
c906108c SS |
12083 | } |
12084 | ||
b084d499 JB |
12085 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
12086 | its low and high PC addresses. Do nothing if these addresses could not | |
12087 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
12088 | and HIGHPC to the high address if greater than HIGHPC. */ | |
12089 | ||
12090 | static void | |
12091 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
12092 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12093 | struct dwarf2_cu *cu) | |
12094 | { | |
12095 | CORE_ADDR low, high; | |
12096 | struct die_info *child = die->child; | |
12097 | ||
d85a05f0 | 12098 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
12099 | { |
12100 | *lowpc = min (*lowpc, low); | |
12101 | *highpc = max (*highpc, high); | |
12102 | } | |
12103 | ||
12104 | /* If the language does not allow nested subprograms (either inside | |
12105 | subprograms or lexical blocks), we're done. */ | |
12106 | if (cu->language != language_ada) | |
12107 | return; | |
6e70227d | 12108 | |
b084d499 JB |
12109 | /* Check all the children of the given DIE. If it contains nested |
12110 | subprograms, then check their pc bounds. Likewise, we need to | |
12111 | check lexical blocks as well, as they may also contain subprogram | |
12112 | definitions. */ | |
12113 | while (child && child->tag) | |
12114 | { | |
12115 | if (child->tag == DW_TAG_subprogram | |
12116 | || child->tag == DW_TAG_lexical_block) | |
12117 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
12118 | child = sibling_die (child); | |
12119 | } | |
12120 | } | |
12121 | ||
fae299cd DC |
12122 | /* Get the low and high pc's represented by the scope DIE, and store |
12123 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
12124 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
12125 | ||
12126 | static void | |
12127 | get_scope_pc_bounds (struct die_info *die, | |
12128 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12129 | struct dwarf2_cu *cu) | |
12130 | { | |
12131 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
12132 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
12133 | CORE_ADDR current_low, current_high; | |
12134 | ||
d85a05f0 | 12135 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
12136 | { |
12137 | best_low = current_low; | |
12138 | best_high = current_high; | |
12139 | } | |
12140 | else | |
12141 | { | |
12142 | struct die_info *child = die->child; | |
12143 | ||
12144 | while (child && child->tag) | |
12145 | { | |
12146 | switch (child->tag) { | |
12147 | case DW_TAG_subprogram: | |
b084d499 | 12148 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
12149 | break; |
12150 | case DW_TAG_namespace: | |
f55ee35c | 12151 | case DW_TAG_module: |
fae299cd DC |
12152 | /* FIXME: carlton/2004-01-16: Should we do this for |
12153 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
12154 | that current GCC's always emit the DIEs corresponding | |
12155 | to definitions of methods of classes as children of a | |
12156 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
12157 | the DIEs giving the declarations, which could be | |
12158 | anywhere). But I don't see any reason why the | |
12159 | standards says that they have to be there. */ | |
12160 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
12161 | ||
12162 | if (current_low != ((CORE_ADDR) -1)) | |
12163 | { | |
12164 | best_low = min (best_low, current_low); | |
12165 | best_high = max (best_high, current_high); | |
12166 | } | |
12167 | break; | |
12168 | default: | |
0963b4bd | 12169 | /* Ignore. */ |
fae299cd DC |
12170 | break; |
12171 | } | |
12172 | ||
12173 | child = sibling_die (child); | |
12174 | } | |
12175 | } | |
12176 | ||
12177 | *lowpc = best_low; | |
12178 | *highpc = best_high; | |
12179 | } | |
12180 | ||
801e3a5b JB |
12181 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
12182 | in DIE. */ | |
380bca97 | 12183 | |
801e3a5b JB |
12184 | static void |
12185 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
12186 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
12187 | { | |
bb5ed363 | 12188 | struct objfile *objfile = cu->objfile; |
3e29f34a | 12189 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 12190 | struct attribute *attr; |
91da1414 | 12191 | struct attribute *attr_high; |
801e3a5b | 12192 | |
91da1414 MW |
12193 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12194 | if (attr_high) | |
801e3a5b | 12195 | { |
801e3a5b JB |
12196 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
12197 | if (attr) | |
12198 | { | |
31aa7e4e JB |
12199 | CORE_ADDR low = attr_value_as_address (attr); |
12200 | CORE_ADDR high = attr_value_as_address (attr_high); | |
12201 | ||
12202 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12203 | high += low; | |
9a619af0 | 12204 | |
3e29f34a MR |
12205 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
12206 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
12207 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
12208 | } |
12209 | } | |
12210 | ||
12211 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
12212 | if (attr) | |
12213 | { | |
bb5ed363 | 12214 | bfd *obfd = objfile->obfd; |
ab435259 DE |
12215 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12216 | We take advantage of the fact that DW_AT_ranges does not appear | |
12217 | in DW_TAG_compile_unit of DWO files. */ | |
12218 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
12219 | |
12220 | /* The value of the DW_AT_ranges attribute is the offset of the | |
12221 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
12222 | unsigned long offset = (DW_UNSND (attr) |
12223 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 12224 | const gdb_byte *buffer; |
801e3a5b JB |
12225 | |
12226 | /* For some target architectures, but not others, the | |
12227 | read_address function sign-extends the addresses it returns. | |
12228 | To recognize base address selection entries, we need a | |
12229 | mask. */ | |
12230 | unsigned int addr_size = cu->header.addr_size; | |
12231 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12232 | ||
12233 | /* The base address, to which the next pair is relative. Note | |
12234 | that this 'base' is a DWARF concept: most entries in a range | |
12235 | list are relative, to reduce the number of relocs against the | |
12236 | debugging information. This is separate from this function's | |
12237 | 'baseaddr' argument, which GDB uses to relocate debugging | |
12238 | information from a shared library based on the address at | |
12239 | which the library was loaded. */ | |
d00adf39 DE |
12240 | CORE_ADDR base = cu->base_address; |
12241 | int base_known = cu->base_known; | |
801e3a5b | 12242 | |
d62bfeaf | 12243 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 12244 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
12245 | { |
12246 | complaint (&symfile_complaints, | |
12247 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
12248 | offset); | |
12249 | return; | |
12250 | } | |
d62bfeaf | 12251 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
12252 | |
12253 | for (;;) | |
12254 | { | |
12255 | unsigned int bytes_read; | |
12256 | CORE_ADDR start, end; | |
12257 | ||
12258 | start = read_address (obfd, buffer, cu, &bytes_read); | |
12259 | buffer += bytes_read; | |
12260 | end = read_address (obfd, buffer, cu, &bytes_read); | |
12261 | buffer += bytes_read; | |
12262 | ||
12263 | /* Did we find the end of the range list? */ | |
12264 | if (start == 0 && end == 0) | |
12265 | break; | |
12266 | ||
12267 | /* Did we find a base address selection entry? */ | |
12268 | else if ((start & base_select_mask) == base_select_mask) | |
12269 | { | |
12270 | base = end; | |
12271 | base_known = 1; | |
12272 | } | |
12273 | ||
12274 | /* We found an ordinary address range. */ | |
12275 | else | |
12276 | { | |
12277 | if (!base_known) | |
12278 | { | |
12279 | complaint (&symfile_complaints, | |
3e43a32a MS |
12280 | _("Invalid .debug_ranges data " |
12281 | "(no base address)")); | |
801e3a5b JB |
12282 | return; |
12283 | } | |
12284 | ||
9277c30c UW |
12285 | if (start > end) |
12286 | { | |
12287 | /* Inverted range entries are invalid. */ | |
12288 | complaint (&symfile_complaints, | |
12289 | _("Invalid .debug_ranges data " | |
12290 | "(inverted range)")); | |
12291 | return; | |
12292 | } | |
12293 | ||
12294 | /* Empty range entries have no effect. */ | |
12295 | if (start == end) | |
12296 | continue; | |
12297 | ||
01093045 DE |
12298 | start += base + baseaddr; |
12299 | end += base + baseaddr; | |
12300 | ||
12301 | /* A not-uncommon case of bad debug info. | |
12302 | Don't pollute the addrmap with bad data. */ | |
12303 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
12304 | { | |
12305 | complaint (&symfile_complaints, | |
12306 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 12307 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
12308 | continue; |
12309 | } | |
12310 | ||
3e29f34a MR |
12311 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
12312 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
01093045 | 12313 | record_block_range (block, start, end - 1); |
801e3a5b JB |
12314 | } |
12315 | } | |
12316 | } | |
12317 | } | |
12318 | ||
685b1105 JK |
12319 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
12320 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 12321 | |
685b1105 JK |
12322 | static void |
12323 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
12324 | { |
12325 | const char *cs; | |
38360086 | 12326 | int major, minor; |
60d5a603 JK |
12327 | |
12328 | if (cu->producer == NULL) | |
12329 | { | |
12330 | /* For unknown compilers expect their behavior is DWARF version | |
12331 | compliant. | |
12332 | ||
12333 | GCC started to support .debug_types sections by -gdwarf-4 since | |
12334 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
12335 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
12336 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
12337 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 12338 | } |
b1ffba5a | 12339 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 12340 | { |
38360086 MW |
12341 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
12342 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 12343 | } |
61012eef | 12344 | else if (startswith (cu->producer, "Intel(R) C")) |
685b1105 JK |
12345 | cu->producer_is_icc = 1; |
12346 | else | |
12347 | { | |
12348 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
12349 | compliant. */ | |
60d5a603 JK |
12350 | } |
12351 | ||
ba919b58 | 12352 | cu->checked_producer = 1; |
685b1105 | 12353 | } |
ba919b58 | 12354 | |
685b1105 JK |
12355 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
12356 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
12357 | during 4.6.0 experimental. */ | |
12358 | ||
12359 | static int | |
12360 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
12361 | { | |
12362 | if (!cu->checked_producer) | |
12363 | check_producer (cu); | |
12364 | ||
12365 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
12366 | } |
12367 | ||
12368 | /* Return the default accessibility type if it is not overriden by | |
12369 | DW_AT_accessibility. */ | |
12370 | ||
12371 | static enum dwarf_access_attribute | |
12372 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
12373 | { | |
12374 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
12375 | { | |
12376 | /* The default DWARF 2 accessibility for members is public, the default | |
12377 | accessibility for inheritance is private. */ | |
12378 | ||
12379 | if (die->tag != DW_TAG_inheritance) | |
12380 | return DW_ACCESS_public; | |
12381 | else | |
12382 | return DW_ACCESS_private; | |
12383 | } | |
12384 | else | |
12385 | { | |
12386 | /* DWARF 3+ defines the default accessibility a different way. The same | |
12387 | rules apply now for DW_TAG_inheritance as for the members and it only | |
12388 | depends on the container kind. */ | |
12389 | ||
12390 | if (die->parent->tag == DW_TAG_class_type) | |
12391 | return DW_ACCESS_private; | |
12392 | else | |
12393 | return DW_ACCESS_public; | |
12394 | } | |
12395 | } | |
12396 | ||
74ac6d43 TT |
12397 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
12398 | offset. If the attribute was not found return 0, otherwise return | |
12399 | 1. If it was found but could not properly be handled, set *OFFSET | |
12400 | to 0. */ | |
12401 | ||
12402 | static int | |
12403 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
12404 | LONGEST *offset) | |
12405 | { | |
12406 | struct attribute *attr; | |
12407 | ||
12408 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
12409 | if (attr != NULL) | |
12410 | { | |
12411 | *offset = 0; | |
12412 | ||
12413 | /* Note that we do not check for a section offset first here. | |
12414 | This is because DW_AT_data_member_location is new in DWARF 4, | |
12415 | so if we see it, we can assume that a constant form is really | |
12416 | a constant and not a section offset. */ | |
12417 | if (attr_form_is_constant (attr)) | |
12418 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
12419 | else if (attr_form_is_section_offset (attr)) | |
12420 | dwarf2_complex_location_expr_complaint (); | |
12421 | else if (attr_form_is_block (attr)) | |
12422 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
12423 | else | |
12424 | dwarf2_complex_location_expr_complaint (); | |
12425 | ||
12426 | return 1; | |
12427 | } | |
12428 | ||
12429 | return 0; | |
12430 | } | |
12431 | ||
c906108c SS |
12432 | /* Add an aggregate field to the field list. */ |
12433 | ||
12434 | static void | |
107d2387 | 12435 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12436 | struct dwarf2_cu *cu) |
6e70227d | 12437 | { |
e7c27a73 | 12438 | struct objfile *objfile = cu->objfile; |
5e2b427d | 12439 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12440 | struct nextfield *new_field; |
12441 | struct attribute *attr; | |
12442 | struct field *fp; | |
15d034d0 | 12443 | const char *fieldname = ""; |
c906108c SS |
12444 | |
12445 | /* Allocate a new field list entry and link it in. */ | |
12446 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 12447 | make_cleanup (xfree, new_field); |
c906108c | 12448 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
12449 | |
12450 | if (die->tag == DW_TAG_inheritance) | |
12451 | { | |
12452 | new_field->next = fip->baseclasses; | |
12453 | fip->baseclasses = new_field; | |
12454 | } | |
12455 | else | |
12456 | { | |
12457 | new_field->next = fip->fields; | |
12458 | fip->fields = new_field; | |
12459 | } | |
c906108c SS |
12460 | fip->nfields++; |
12461 | ||
e142c38c | 12462 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
12463 | if (attr) |
12464 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
12465 | else |
12466 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
12467 | if (new_field->accessibility != DW_ACCESS_public) |
12468 | fip->non_public_fields = 1; | |
60d5a603 | 12469 | |
e142c38c | 12470 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
12471 | if (attr) |
12472 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
12473 | else |
12474 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
12475 | |
12476 | fp = &new_field->field; | |
a9a9bd0f | 12477 | |
e142c38c | 12478 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 12479 | { |
74ac6d43 TT |
12480 | LONGEST offset; |
12481 | ||
a9a9bd0f | 12482 | /* Data member other than a C++ static data member. */ |
6e70227d | 12483 | |
c906108c | 12484 | /* Get type of field. */ |
e7c27a73 | 12485 | fp->type = die_type (die, cu); |
c906108c | 12486 | |
d6a843b5 | 12487 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 12488 | |
c906108c | 12489 | /* Get bit size of field (zero if none). */ |
e142c38c | 12490 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
12491 | if (attr) |
12492 | { | |
12493 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
12494 | } | |
12495 | else | |
12496 | { | |
12497 | FIELD_BITSIZE (*fp) = 0; | |
12498 | } | |
12499 | ||
12500 | /* Get bit offset of field. */ | |
74ac6d43 TT |
12501 | if (handle_data_member_location (die, cu, &offset)) |
12502 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 12503 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
12504 | if (attr) |
12505 | { | |
5e2b427d | 12506 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
12507 | { |
12508 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
12509 | additional bit offset from the MSB of the containing |
12510 | anonymous object to the MSB of the field. We don't | |
12511 | have to do anything special since we don't need to | |
12512 | know the size of the anonymous object. */ | |
f41f5e61 | 12513 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
12514 | } |
12515 | else | |
12516 | { | |
12517 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
12518 | MSB of the anonymous object, subtract off the number of |
12519 | bits from the MSB of the field to the MSB of the | |
12520 | object, and then subtract off the number of bits of | |
12521 | the field itself. The result is the bit offset of | |
12522 | the LSB of the field. */ | |
c906108c SS |
12523 | int anonymous_size; |
12524 | int bit_offset = DW_UNSND (attr); | |
12525 | ||
e142c38c | 12526 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12527 | if (attr) |
12528 | { | |
12529 | /* The size of the anonymous object containing | |
12530 | the bit field is explicit, so use the | |
12531 | indicated size (in bytes). */ | |
12532 | anonymous_size = DW_UNSND (attr); | |
12533 | } | |
12534 | else | |
12535 | { | |
12536 | /* The size of the anonymous object containing | |
12537 | the bit field must be inferred from the type | |
12538 | attribute of the data member containing the | |
12539 | bit field. */ | |
12540 | anonymous_size = TYPE_LENGTH (fp->type); | |
12541 | } | |
f41f5e61 PA |
12542 | SET_FIELD_BITPOS (*fp, |
12543 | (FIELD_BITPOS (*fp) | |
12544 | + anonymous_size * bits_per_byte | |
12545 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
12546 | } |
12547 | } | |
12548 | ||
12549 | /* Get name of field. */ | |
39cbfefa DJ |
12550 | fieldname = dwarf2_name (die, cu); |
12551 | if (fieldname == NULL) | |
12552 | fieldname = ""; | |
d8151005 DJ |
12553 | |
12554 | /* The name is already allocated along with this objfile, so we don't | |
12555 | need to duplicate it for the type. */ | |
12556 | fp->name = fieldname; | |
c906108c SS |
12557 | |
12558 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 12559 | pointer or virtual base class pointer) to private. */ |
e142c38c | 12560 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 12561 | { |
d48cc9dd | 12562 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
12563 | new_field->accessibility = DW_ACCESS_private; |
12564 | fip->non_public_fields = 1; | |
12565 | } | |
12566 | } | |
a9a9bd0f | 12567 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 12568 | { |
a9a9bd0f DC |
12569 | /* C++ static member. */ |
12570 | ||
12571 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
12572 | is a declaration, but all versions of G++ as of this writing | |
12573 | (so through at least 3.2.1) incorrectly generate | |
12574 | DW_TAG_variable tags. */ | |
6e70227d | 12575 | |
ff355380 | 12576 | const char *physname; |
c906108c | 12577 | |
a9a9bd0f | 12578 | /* Get name of field. */ |
39cbfefa DJ |
12579 | fieldname = dwarf2_name (die, cu); |
12580 | if (fieldname == NULL) | |
c906108c SS |
12581 | return; |
12582 | ||
254e6b9e | 12583 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
12584 | if (attr |
12585 | /* Only create a symbol if this is an external value. | |
12586 | new_symbol checks this and puts the value in the global symbol | |
12587 | table, which we want. If it is not external, new_symbol | |
12588 | will try to put the value in cu->list_in_scope which is wrong. */ | |
12589 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
12590 | { |
12591 | /* A static const member, not much different than an enum as far as | |
12592 | we're concerned, except that we can support more types. */ | |
12593 | new_symbol (die, NULL, cu); | |
12594 | } | |
12595 | ||
2df3850c | 12596 | /* Get physical name. */ |
ff355380 | 12597 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 12598 | |
d8151005 DJ |
12599 | /* The name is already allocated along with this objfile, so we don't |
12600 | need to duplicate it for the type. */ | |
12601 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 12602 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 12603 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
12604 | } |
12605 | else if (die->tag == DW_TAG_inheritance) | |
12606 | { | |
74ac6d43 | 12607 | LONGEST offset; |
d4b96c9a | 12608 | |
74ac6d43 TT |
12609 | /* C++ base class field. */ |
12610 | if (handle_data_member_location (die, cu, &offset)) | |
12611 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 12612 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 12613 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
12614 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
12615 | fip->nbaseclasses++; | |
12616 | } | |
12617 | } | |
12618 | ||
98751a41 JK |
12619 | /* Add a typedef defined in the scope of the FIP's class. */ |
12620 | ||
12621 | static void | |
12622 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
12623 | struct dwarf2_cu *cu) | |
6e70227d | 12624 | { |
98751a41 | 12625 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
12626 | struct typedef_field_list *new_field; |
12627 | struct attribute *attr; | |
12628 | struct typedef_field *fp; | |
12629 | char *fieldname = ""; | |
12630 | ||
12631 | /* Allocate a new field list entry and link it in. */ | |
12632 | new_field = xzalloc (sizeof (*new_field)); | |
12633 | make_cleanup (xfree, new_field); | |
12634 | ||
12635 | gdb_assert (die->tag == DW_TAG_typedef); | |
12636 | ||
12637 | fp = &new_field->field; | |
12638 | ||
12639 | /* Get name of field. */ | |
12640 | fp->name = dwarf2_name (die, cu); | |
12641 | if (fp->name == NULL) | |
12642 | return; | |
12643 | ||
12644 | fp->type = read_type_die (die, cu); | |
12645 | ||
12646 | new_field->next = fip->typedef_field_list; | |
12647 | fip->typedef_field_list = new_field; | |
12648 | fip->typedef_field_list_count++; | |
12649 | } | |
12650 | ||
c906108c SS |
12651 | /* Create the vector of fields, and attach it to the type. */ |
12652 | ||
12653 | static void | |
fba45db2 | 12654 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12655 | struct dwarf2_cu *cu) |
c906108c SS |
12656 | { |
12657 | int nfields = fip->nfields; | |
12658 | ||
12659 | /* Record the field count, allocate space for the array of fields, | |
12660 | and create blank accessibility bitfields if necessary. */ | |
12661 | TYPE_NFIELDS (type) = nfields; | |
12662 | TYPE_FIELDS (type) = (struct field *) | |
12663 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
12664 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
12665 | ||
b4ba55a1 | 12666 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
12667 | { |
12668 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12669 | ||
12670 | TYPE_FIELD_PRIVATE_BITS (type) = | |
12671 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12672 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
12673 | ||
12674 | TYPE_FIELD_PROTECTED_BITS (type) = | |
12675 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12676 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
12677 | ||
774b6a14 TT |
12678 | TYPE_FIELD_IGNORE_BITS (type) = |
12679 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12680 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
12681 | } |
12682 | ||
12683 | /* If the type has baseclasses, allocate and clear a bit vector for | |
12684 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 12685 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
12686 | { |
12687 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 12688 | unsigned char *pointer; |
c906108c SS |
12689 | |
12690 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
12691 | pointer = TYPE_ALLOC (type, num_bytes); |
12692 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
12693 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
12694 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
12695 | } | |
12696 | ||
3e43a32a MS |
12697 | /* Copy the saved-up fields into the field vector. Start from the head of |
12698 | the list, adding to the tail of the field array, so that they end up in | |
12699 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
12700 | while (nfields-- > 0) |
12701 | { | |
7d0ccb61 DJ |
12702 | struct nextfield *fieldp; |
12703 | ||
12704 | if (fip->fields) | |
12705 | { | |
12706 | fieldp = fip->fields; | |
12707 | fip->fields = fieldp->next; | |
12708 | } | |
12709 | else | |
12710 | { | |
12711 | fieldp = fip->baseclasses; | |
12712 | fip->baseclasses = fieldp->next; | |
12713 | } | |
12714 | ||
12715 | TYPE_FIELD (type, nfields) = fieldp->field; | |
12716 | switch (fieldp->accessibility) | |
c906108c | 12717 | { |
c5aa993b | 12718 | case DW_ACCESS_private: |
b4ba55a1 JB |
12719 | if (cu->language != language_ada) |
12720 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 12721 | break; |
c906108c | 12722 | |
c5aa993b | 12723 | case DW_ACCESS_protected: |
b4ba55a1 JB |
12724 | if (cu->language != language_ada) |
12725 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 12726 | break; |
c906108c | 12727 | |
c5aa993b JM |
12728 | case DW_ACCESS_public: |
12729 | break; | |
c906108c | 12730 | |
c5aa993b JM |
12731 | default: |
12732 | /* Unknown accessibility. Complain and treat it as public. */ | |
12733 | { | |
e2e0b3e5 | 12734 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 12735 | fieldp->accessibility); |
c5aa993b JM |
12736 | } |
12737 | break; | |
c906108c SS |
12738 | } |
12739 | if (nfields < fip->nbaseclasses) | |
12740 | { | |
7d0ccb61 | 12741 | switch (fieldp->virtuality) |
c906108c | 12742 | { |
c5aa993b JM |
12743 | case DW_VIRTUALITY_virtual: |
12744 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 12745 | if (cu->language == language_ada) |
a73c6dcd | 12746 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
12747 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
12748 | break; | |
c906108c SS |
12749 | } |
12750 | } | |
c906108c SS |
12751 | } |
12752 | } | |
12753 | ||
7d27a96d TT |
12754 | /* Return true if this member function is a constructor, false |
12755 | otherwise. */ | |
12756 | ||
12757 | static int | |
12758 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
12759 | { | |
12760 | const char *fieldname; | |
fe978cb0 | 12761 | const char *type_name; |
7d27a96d TT |
12762 | int len; |
12763 | ||
12764 | if (die->parent == NULL) | |
12765 | return 0; | |
12766 | ||
12767 | if (die->parent->tag != DW_TAG_structure_type | |
12768 | && die->parent->tag != DW_TAG_union_type | |
12769 | && die->parent->tag != DW_TAG_class_type) | |
12770 | return 0; | |
12771 | ||
12772 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
12773 | type_name = dwarf2_name (die->parent, cu); |
12774 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
12775 | return 0; |
12776 | ||
12777 | len = strlen (fieldname); | |
fe978cb0 PA |
12778 | return (strncmp (fieldname, type_name, len) == 0 |
12779 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
12780 | } |
12781 | ||
c906108c SS |
12782 | /* Add a member function to the proper fieldlist. */ |
12783 | ||
12784 | static void | |
107d2387 | 12785 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12786 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 12787 | { |
e7c27a73 | 12788 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12789 | struct attribute *attr; |
12790 | struct fnfieldlist *flp; | |
12791 | int i; | |
12792 | struct fn_field *fnp; | |
15d034d0 | 12793 | const char *fieldname; |
c906108c | 12794 | struct nextfnfield *new_fnfield; |
f792889a | 12795 | struct type *this_type; |
60d5a603 | 12796 | enum dwarf_access_attribute accessibility; |
c906108c | 12797 | |
b4ba55a1 | 12798 | if (cu->language == language_ada) |
a73c6dcd | 12799 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 12800 | |
2df3850c | 12801 | /* Get name of member function. */ |
39cbfefa DJ |
12802 | fieldname = dwarf2_name (die, cu); |
12803 | if (fieldname == NULL) | |
2df3850c | 12804 | return; |
c906108c | 12805 | |
c906108c SS |
12806 | /* Look up member function name in fieldlist. */ |
12807 | for (i = 0; i < fip->nfnfields; i++) | |
12808 | { | |
27bfe10e | 12809 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
12810 | break; |
12811 | } | |
12812 | ||
12813 | /* Create new list element if necessary. */ | |
12814 | if (i < fip->nfnfields) | |
12815 | flp = &fip->fnfieldlists[i]; | |
12816 | else | |
12817 | { | |
12818 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
12819 | { | |
12820 | fip->fnfieldlists = (struct fnfieldlist *) | |
12821 | xrealloc (fip->fnfieldlists, | |
12822 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 12823 | * sizeof (struct fnfieldlist)); |
c906108c | 12824 | if (fip->nfnfields == 0) |
c13c43fd | 12825 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
12826 | } |
12827 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
12828 | flp->name = fieldname; | |
12829 | flp->length = 0; | |
12830 | flp->head = NULL; | |
3da10d80 | 12831 | i = fip->nfnfields++; |
c906108c SS |
12832 | } |
12833 | ||
12834 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 12835 | entry. */ |
c906108c | 12836 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 12837 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
12838 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
12839 | new_fnfield->next = flp->head; | |
12840 | flp->head = new_fnfield; | |
12841 | flp->length++; | |
12842 | ||
12843 | /* Fill in the member function field info. */ | |
12844 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
12845 | |
12846 | /* Delay processing of the physname until later. */ | |
12847 | if (cu->language == language_cplus || cu->language == language_java) | |
12848 | { | |
12849 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
12850 | die, cu); | |
12851 | } | |
12852 | else | |
12853 | { | |
1d06ead6 | 12854 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
12855 | fnp->physname = physname ? physname : ""; |
12856 | } | |
12857 | ||
c906108c | 12858 | fnp->type = alloc_type (objfile); |
f792889a DJ |
12859 | this_type = read_type_die (die, cu); |
12860 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 12861 | { |
f792889a | 12862 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 12863 | |
f792889a | 12864 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
12865 | of the method itself (TYPE_CODE_METHOD). */ |
12866 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
12867 | TYPE_TARGET_TYPE (this_type), |
12868 | TYPE_FIELDS (this_type), | |
12869 | TYPE_NFIELDS (this_type), | |
12870 | TYPE_VARARGS (this_type)); | |
c906108c SS |
12871 | |
12872 | /* Handle static member functions. | |
c5aa993b | 12873 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
12874 | member functions. G++ helps GDB by marking the first |
12875 | parameter for non-static member functions (which is the this | |
12876 | pointer) as artificial. We obtain this information from | |
12877 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 12878 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
12879 | fnp->voffset = VOFFSET_STATIC; |
12880 | } | |
12881 | else | |
e2e0b3e5 | 12882 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 12883 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
12884 | |
12885 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 12886 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 12887 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 12888 | |
3e43a32a MS |
12889 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
12890 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
12891 | |
12892 | /* Get accessibility. */ | |
e142c38c | 12893 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 12894 | if (attr) |
60d5a603 JK |
12895 | accessibility = DW_UNSND (attr); |
12896 | else | |
12897 | accessibility = dwarf2_default_access_attribute (die, cu); | |
12898 | switch (accessibility) | |
c906108c | 12899 | { |
60d5a603 JK |
12900 | case DW_ACCESS_private: |
12901 | fnp->is_private = 1; | |
12902 | break; | |
12903 | case DW_ACCESS_protected: | |
12904 | fnp->is_protected = 1; | |
12905 | break; | |
c906108c SS |
12906 | } |
12907 | ||
b02dede2 | 12908 | /* Check for artificial methods. */ |
e142c38c | 12909 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
12910 | if (attr && DW_UNSND (attr) != 0) |
12911 | fnp->is_artificial = 1; | |
12912 | ||
7d27a96d TT |
12913 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
12914 | ||
0d564a31 | 12915 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
12916 | function. For older versions of GCC, this is an offset in the |
12917 | appropriate virtual table, as specified by DW_AT_containing_type. | |
12918 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
12919 | to the object address. */ |
12920 | ||
e142c38c | 12921 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 12922 | if (attr) |
8e19ed76 | 12923 | { |
aec5aa8b | 12924 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 12925 | { |
aec5aa8b TT |
12926 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
12927 | { | |
12928 | /* Old-style GCC. */ | |
12929 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
12930 | } | |
12931 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12932 | || (DW_BLOCK (attr)->size > 1 | |
12933 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
12934 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
12935 | { | |
12936 | struct dwarf_block blk; | |
12937 | int offset; | |
12938 | ||
12939 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12940 | ? 1 : 2); | |
12941 | blk.size = DW_BLOCK (attr)->size - offset; | |
12942 | blk.data = DW_BLOCK (attr)->data + offset; | |
12943 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
12944 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
12945 | dwarf2_complex_location_expr_complaint (); | |
12946 | else | |
12947 | fnp->voffset /= cu->header.addr_size; | |
12948 | fnp->voffset += 2; | |
12949 | } | |
12950 | else | |
12951 | dwarf2_complex_location_expr_complaint (); | |
12952 | ||
12953 | if (!fnp->fcontext) | |
7e993ebf KS |
12954 | { |
12955 | /* If there is no `this' field and no DW_AT_containing_type, | |
12956 | we cannot actually find a base class context for the | |
12957 | vtable! */ | |
12958 | if (TYPE_NFIELDS (this_type) == 0 | |
12959 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
12960 | { | |
12961 | complaint (&symfile_complaints, | |
12962 | _("cannot determine context for virtual member " | |
12963 | "function \"%s\" (offset %d)"), | |
12964 | fieldname, die->offset.sect_off); | |
12965 | } | |
12966 | else | |
12967 | { | |
12968 | fnp->fcontext | |
12969 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
12970 | } | |
12971 | } | |
aec5aa8b | 12972 | } |
3690dd37 | 12973 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 12974 | { |
4d3c2250 | 12975 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
12976 | } |
12977 | else | |
12978 | { | |
4d3c2250 KB |
12979 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
12980 | fieldname); | |
8e19ed76 | 12981 | } |
0d564a31 | 12982 | } |
d48cc9dd DJ |
12983 | else |
12984 | { | |
12985 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
12986 | if (attr && DW_UNSND (attr)) | |
12987 | { | |
12988 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
12989 | complaint (&symfile_complaints, | |
3e43a32a MS |
12990 | _("Member function \"%s\" (offset %d) is virtual " |
12991 | "but the vtable offset is not specified"), | |
b64f50a1 | 12992 | fieldname, die->offset.sect_off); |
9655fd1a | 12993 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
12994 | TYPE_CPLUS_DYNAMIC (type) = 1; |
12995 | } | |
12996 | } | |
c906108c SS |
12997 | } |
12998 | ||
12999 | /* Create the vector of member function fields, and attach it to the type. */ | |
13000 | ||
13001 | static void | |
fba45db2 | 13002 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 13003 | struct dwarf2_cu *cu) |
c906108c SS |
13004 | { |
13005 | struct fnfieldlist *flp; | |
c906108c SS |
13006 | int i; |
13007 | ||
b4ba55a1 | 13008 | if (cu->language == language_ada) |
a73c6dcd | 13009 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 13010 | |
c906108c SS |
13011 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
13012 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
13013 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
13014 | ||
13015 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
13016 | { | |
13017 | struct nextfnfield *nfp = flp->head; | |
13018 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
13019 | int k; | |
13020 | ||
13021 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
13022 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
13023 | fn_flp->fn_fields = (struct fn_field *) | |
13024 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
13025 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 13026 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
13027 | } |
13028 | ||
13029 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
13030 | } |
13031 | ||
1168df01 JB |
13032 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
13033 | language, zero otherwise. */ | |
13034 | static int | |
13035 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
13036 | { | |
13037 | static const char vptr[] = "_vptr"; | |
987504bb | 13038 | static const char vtable[] = "vtable"; |
1168df01 | 13039 | |
987504bb JJ |
13040 | /* Look for the C++ and Java forms of the vtable. */ |
13041 | if ((cu->language == language_java | |
61012eef GB |
13042 | && startswith (name, vtable)) |
13043 | || (startswith (name, vptr) | |
987504bb | 13044 | && is_cplus_marker (name[sizeof (vptr) - 1]))) |
1168df01 JB |
13045 | return 1; |
13046 | ||
13047 | return 0; | |
13048 | } | |
13049 | ||
c0dd20ea | 13050 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
13051 | functions, with the ABI-specified layout. If TYPE describes |
13052 | such a structure, smash it into a member function type. | |
61049d3b DJ |
13053 | |
13054 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
13055 | This is GCC PR debug/28767. */ | |
c0dd20ea | 13056 | |
0b92b5bb TT |
13057 | static void |
13058 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 13059 | { |
09e2d7c7 | 13060 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
13061 | |
13062 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
13063 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
13064 | return; | |
c0dd20ea DJ |
13065 | |
13066 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
13067 | if (TYPE_FIELD_NAME (type, 0) == NULL |
13068 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
13069 | || TYPE_FIELD_NAME (type, 1) == NULL | |
13070 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
13071 | return; | |
c0dd20ea DJ |
13072 | |
13073 | /* Find the type of the method. */ | |
0b92b5bb | 13074 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
13075 | if (pfn_type == NULL |
13076 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
13077 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 13078 | return; |
c0dd20ea DJ |
13079 | |
13080 | /* Look for the "this" argument. */ | |
13081 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
13082 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 13083 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 13084 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 13085 | return; |
c0dd20ea | 13086 | |
09e2d7c7 | 13087 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 13088 | new_type = alloc_type (objfile); |
09e2d7c7 | 13089 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
13090 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
13091 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 13092 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 13093 | } |
1168df01 | 13094 | |
685b1105 JK |
13095 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
13096 | (icc). */ | |
13097 | ||
13098 | static int | |
13099 | producer_is_icc (struct dwarf2_cu *cu) | |
13100 | { | |
13101 | if (!cu->checked_producer) | |
13102 | check_producer (cu); | |
13103 | ||
13104 | return cu->producer_is_icc; | |
13105 | } | |
13106 | ||
c906108c | 13107 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
13108 | (definition) to create a type for the structure or union. Fill in |
13109 | the type's name and general properties; the members will not be | |
83655187 DE |
13110 | processed until process_structure_scope. A symbol table entry for |
13111 | the type will also not be done until process_structure_scope (assuming | |
13112 | the type has a name). | |
c906108c | 13113 | |
c767944b DJ |
13114 | NOTE: we need to call these functions regardless of whether or not the |
13115 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 13116 | structure or union. This gets the type entered into our set of |
83655187 | 13117 | user defined types. */ |
c906108c | 13118 | |
f792889a | 13119 | static struct type * |
134d01f1 | 13120 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13121 | { |
e7c27a73 | 13122 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13123 | struct type *type; |
13124 | struct attribute *attr; | |
15d034d0 | 13125 | const char *name; |
c906108c | 13126 | |
348e048f DE |
13127 | /* If the definition of this type lives in .debug_types, read that type. |
13128 | Don't follow DW_AT_specification though, that will take us back up | |
13129 | the chain and we want to go down. */ | |
45e58e77 | 13130 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13131 | if (attr) |
13132 | { | |
ac9ec31b | 13133 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13134 | |
ac9ec31b | 13135 | /* The type's CU may not be the same as CU. |
02142a6c | 13136 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13137 | return set_die_type (die, type, cu); |
13138 | } | |
13139 | ||
c0dd20ea | 13140 | type = alloc_type (objfile); |
c906108c | 13141 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 13142 | |
39cbfefa DJ |
13143 | name = dwarf2_name (die, cu); |
13144 | if (name != NULL) | |
c906108c | 13145 | { |
987504bb | 13146 | if (cu->language == language_cplus |
45280282 IB |
13147 | || cu->language == language_java |
13148 | || cu->language == language_d) | |
63d06c5c | 13149 | { |
15d034d0 | 13150 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
13151 | |
13152 | /* dwarf2_full_name might have already finished building the DIE's | |
13153 | type. If so, there is no need to continue. */ | |
13154 | if (get_die_type (die, cu) != NULL) | |
13155 | return get_die_type (die, cu); | |
13156 | ||
13157 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
13158 | if (die->tag == DW_TAG_structure_type |
13159 | || die->tag == DW_TAG_class_type) | |
13160 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
13161 | } |
13162 | else | |
13163 | { | |
d8151005 DJ |
13164 | /* The name is already allocated along with this objfile, so |
13165 | we don't need to duplicate it for the type. */ | |
7d455152 | 13166 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
13167 | if (die->tag == DW_TAG_class_type) |
13168 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 13169 | } |
c906108c SS |
13170 | } |
13171 | ||
13172 | if (die->tag == DW_TAG_structure_type) | |
13173 | { | |
13174 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
13175 | } | |
13176 | else if (die->tag == DW_TAG_union_type) | |
13177 | { | |
13178 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
13179 | } | |
13180 | else | |
13181 | { | |
4753d33b | 13182 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
13183 | } |
13184 | ||
0cc2414c TT |
13185 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
13186 | TYPE_DECLARED_CLASS (type) = 1; | |
13187 | ||
e142c38c | 13188 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13189 | if (attr) |
13190 | { | |
13191 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13192 | } | |
13193 | else | |
13194 | { | |
13195 | TYPE_LENGTH (type) = 0; | |
13196 | } | |
13197 | ||
422b1cb0 | 13198 | if (producer_is_icc (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 JK |
13199 | { |
13200 | /* ICC does not output the required DW_AT_declaration | |
13201 | on incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 13202 | TYPE_STUB (type) = 1; |
685b1105 JK |
13203 | } |
13204 | else | |
13205 | TYPE_STUB_SUPPORTED (type) = 1; | |
13206 | ||
dc718098 | 13207 | if (die_is_declaration (die, cu)) |
876cecd0 | 13208 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
13209 | else if (attr == NULL && die->child == NULL |
13210 | && producer_is_realview (cu->producer)) | |
13211 | /* RealView does not output the required DW_AT_declaration | |
13212 | on incomplete types. */ | |
13213 | TYPE_STUB (type) = 1; | |
dc718098 | 13214 | |
c906108c SS |
13215 | /* We need to add the type field to the die immediately so we don't |
13216 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 13217 | type within the structure itself. */ |
1c379e20 | 13218 | set_die_type (die, type, cu); |
c906108c | 13219 | |
7e314c57 JK |
13220 | /* set_die_type should be already done. */ |
13221 | set_descriptive_type (type, die, cu); | |
13222 | ||
c767944b DJ |
13223 | return type; |
13224 | } | |
13225 | ||
13226 | /* Finish creating a structure or union type, including filling in | |
13227 | its members and creating a symbol for it. */ | |
13228 | ||
13229 | static void | |
13230 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13231 | { | |
13232 | struct objfile *objfile = cu->objfile; | |
ca040673 | 13233 | struct die_info *child_die; |
c767944b DJ |
13234 | struct type *type; |
13235 | ||
13236 | type = get_die_type (die, cu); | |
13237 | if (type == NULL) | |
13238 | type = read_structure_type (die, cu); | |
13239 | ||
e142c38c | 13240 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
13241 | { |
13242 | struct field_info fi; | |
34eaf542 | 13243 | VEC (symbolp) *template_args = NULL; |
c767944b | 13244 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
13245 | |
13246 | memset (&fi, 0, sizeof (struct field_info)); | |
13247 | ||
639d11d3 | 13248 | child_die = die->child; |
c906108c SS |
13249 | |
13250 | while (child_die && child_die->tag) | |
13251 | { | |
a9a9bd0f DC |
13252 | if (child_die->tag == DW_TAG_member |
13253 | || child_die->tag == DW_TAG_variable) | |
c906108c | 13254 | { |
a9a9bd0f DC |
13255 | /* NOTE: carlton/2002-11-05: A C++ static data member |
13256 | should be a DW_TAG_member that is a declaration, but | |
13257 | all versions of G++ as of this writing (so through at | |
13258 | least 3.2.1) incorrectly generate DW_TAG_variable | |
13259 | tags for them instead. */ | |
e7c27a73 | 13260 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13261 | } |
8713b1b1 | 13262 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 13263 | { |
0963b4bd | 13264 | /* C++ member function. */ |
e7c27a73 | 13265 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
13266 | } |
13267 | else if (child_die->tag == DW_TAG_inheritance) | |
13268 | { | |
13269 | /* C++ base class field. */ | |
e7c27a73 | 13270 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13271 | } |
98751a41 JK |
13272 | else if (child_die->tag == DW_TAG_typedef) |
13273 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
13274 | else if (child_die->tag == DW_TAG_template_type_param |
13275 | || child_die->tag == DW_TAG_template_value_param) | |
13276 | { | |
13277 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13278 | ||
f1078f66 DJ |
13279 | if (arg != NULL) |
13280 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
13281 | } |
13282 | ||
c906108c SS |
13283 | child_die = sibling_die (child_die); |
13284 | } | |
13285 | ||
34eaf542 TT |
13286 | /* Attach template arguments to type. */ |
13287 | if (! VEC_empty (symbolp, template_args)) | |
13288 | { | |
13289 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
13290 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13291 | = VEC_length (symbolp, template_args); | |
13292 | TYPE_TEMPLATE_ARGUMENTS (type) | |
13293 | = obstack_alloc (&objfile->objfile_obstack, | |
13294 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13295 | * sizeof (struct symbol *))); | |
13296 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
13297 | VEC_address (symbolp, template_args), | |
13298 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13299 | * sizeof (struct symbol *))); | |
13300 | VEC_free (symbolp, template_args); | |
13301 | } | |
13302 | ||
c906108c SS |
13303 | /* Attach fields and member functions to the type. */ |
13304 | if (fi.nfields) | |
e7c27a73 | 13305 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
13306 | if (fi.nfnfields) |
13307 | { | |
e7c27a73 | 13308 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 13309 | |
c5aa993b | 13310 | /* Get the type which refers to the base class (possibly this |
c906108c | 13311 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
13312 | class from the DW_AT_containing_type attribute. This use of |
13313 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 13314 | |
e142c38c | 13315 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 13316 | { |
e7c27a73 | 13317 | struct type *t = die_containing_type (die, cu); |
c906108c | 13318 | |
ae6ae975 | 13319 | set_type_vptr_basetype (type, t); |
c906108c SS |
13320 | if (type == t) |
13321 | { | |
c906108c SS |
13322 | int i; |
13323 | ||
13324 | /* Our own class provides vtbl ptr. */ | |
13325 | for (i = TYPE_NFIELDS (t) - 1; | |
13326 | i >= TYPE_N_BASECLASSES (t); | |
13327 | --i) | |
13328 | { | |
0d5cff50 | 13329 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 13330 | |
1168df01 | 13331 | if (is_vtable_name (fieldname, cu)) |
c906108c | 13332 | { |
ae6ae975 | 13333 | set_type_vptr_fieldno (type, i); |
c906108c SS |
13334 | break; |
13335 | } | |
13336 | } | |
13337 | ||
13338 | /* Complain if virtual function table field not found. */ | |
13339 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 13340 | complaint (&symfile_complaints, |
3e43a32a MS |
13341 | _("virtual function table pointer " |
13342 | "not found when defining class '%s'"), | |
4d3c2250 KB |
13343 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
13344 | ""); | |
c906108c SS |
13345 | } |
13346 | else | |
13347 | { | |
ae6ae975 | 13348 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
13349 | } |
13350 | } | |
f6235d4c | 13351 | else if (cu->producer |
61012eef | 13352 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
13353 | { |
13354 | /* The IBM XLC compiler does not provide direct indication | |
13355 | of the containing type, but the vtable pointer is | |
13356 | always named __vfp. */ | |
13357 | ||
13358 | int i; | |
13359 | ||
13360 | for (i = TYPE_NFIELDS (type) - 1; | |
13361 | i >= TYPE_N_BASECLASSES (type); | |
13362 | --i) | |
13363 | { | |
13364 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
13365 | { | |
ae6ae975 DE |
13366 | set_type_vptr_fieldno (type, i); |
13367 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
13368 | break; |
13369 | } | |
13370 | } | |
13371 | } | |
c906108c | 13372 | } |
98751a41 JK |
13373 | |
13374 | /* Copy fi.typedef_field_list linked list elements content into the | |
13375 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
13376 | if (fi.typedef_field_list) | |
13377 | { | |
13378 | int i = fi.typedef_field_list_count; | |
13379 | ||
a0d7a4ff | 13380 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
13381 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
13382 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
13383 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
13384 | ||
13385 | /* Reverse the list order to keep the debug info elements order. */ | |
13386 | while (--i >= 0) | |
13387 | { | |
13388 | struct typedef_field *dest, *src; | |
6e70227d | 13389 | |
98751a41 JK |
13390 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
13391 | src = &fi.typedef_field_list->field; | |
13392 | fi.typedef_field_list = fi.typedef_field_list->next; | |
13393 | *dest = *src; | |
13394 | } | |
13395 | } | |
c767944b DJ |
13396 | |
13397 | do_cleanups (back_to); | |
eb2a6f42 TT |
13398 | |
13399 | if (HAVE_CPLUS_STRUCT (type)) | |
13400 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 13401 | } |
63d06c5c | 13402 | |
bb5ed363 | 13403 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 13404 | |
90aeadfc DC |
13405 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
13406 | snapshots) has been known to create a die giving a declaration | |
13407 | for a class that has, as a child, a die giving a definition for a | |
13408 | nested class. So we have to process our children even if the | |
13409 | current die is a declaration. Normally, of course, a declaration | |
13410 | won't have any children at all. */ | |
134d01f1 | 13411 | |
ca040673 DE |
13412 | child_die = die->child; |
13413 | ||
90aeadfc DC |
13414 | while (child_die != NULL && child_die->tag) |
13415 | { | |
13416 | if (child_die->tag == DW_TAG_member | |
13417 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
13418 | || child_die->tag == DW_TAG_inheritance |
13419 | || child_die->tag == DW_TAG_template_value_param | |
13420 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 13421 | { |
90aeadfc | 13422 | /* Do nothing. */ |
134d01f1 | 13423 | } |
90aeadfc DC |
13424 | else |
13425 | process_die (child_die, cu); | |
134d01f1 | 13426 | |
90aeadfc | 13427 | child_die = sibling_die (child_die); |
134d01f1 DJ |
13428 | } |
13429 | ||
fa4028e9 JB |
13430 | /* Do not consider external references. According to the DWARF standard, |
13431 | these DIEs are identified by the fact that they have no byte_size | |
13432 | attribute, and a declaration attribute. */ | |
13433 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
13434 | || !die_is_declaration (die, cu)) | |
c767944b | 13435 | new_symbol (die, type, cu); |
134d01f1 DJ |
13436 | } |
13437 | ||
55426c9d JB |
13438 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
13439 | update TYPE using some information only available in DIE's children. */ | |
13440 | ||
13441 | static void | |
13442 | update_enumeration_type_from_children (struct die_info *die, | |
13443 | struct type *type, | |
13444 | struct dwarf2_cu *cu) | |
13445 | { | |
13446 | struct obstack obstack; | |
60f7655a | 13447 | struct die_info *child_die; |
55426c9d JB |
13448 | int unsigned_enum = 1; |
13449 | int flag_enum = 1; | |
13450 | ULONGEST mask = 0; | |
13451 | struct cleanup *old_chain; | |
13452 | ||
13453 | obstack_init (&obstack); | |
13454 | old_chain = make_cleanup_obstack_free (&obstack); | |
13455 | ||
60f7655a DE |
13456 | for (child_die = die->child; |
13457 | child_die != NULL && child_die->tag; | |
13458 | child_die = sibling_die (child_die)) | |
55426c9d JB |
13459 | { |
13460 | struct attribute *attr; | |
13461 | LONGEST value; | |
13462 | const gdb_byte *bytes; | |
13463 | struct dwarf2_locexpr_baton *baton; | |
13464 | const char *name; | |
60f7655a | 13465 | |
55426c9d JB |
13466 | if (child_die->tag != DW_TAG_enumerator) |
13467 | continue; | |
13468 | ||
13469 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
13470 | if (attr == NULL) | |
13471 | continue; | |
13472 | ||
13473 | name = dwarf2_name (child_die, cu); | |
13474 | if (name == NULL) | |
13475 | name = "<anonymous enumerator>"; | |
13476 | ||
13477 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
13478 | &value, &bytes, &baton); | |
13479 | if (value < 0) | |
13480 | { | |
13481 | unsigned_enum = 0; | |
13482 | flag_enum = 0; | |
13483 | } | |
13484 | else if ((mask & value) != 0) | |
13485 | flag_enum = 0; | |
13486 | else | |
13487 | mask |= value; | |
13488 | ||
13489 | /* If we already know that the enum type is neither unsigned, nor | |
13490 | a flag type, no need to look at the rest of the enumerates. */ | |
13491 | if (!unsigned_enum && !flag_enum) | |
13492 | break; | |
55426c9d JB |
13493 | } |
13494 | ||
13495 | if (unsigned_enum) | |
13496 | TYPE_UNSIGNED (type) = 1; | |
13497 | if (flag_enum) | |
13498 | TYPE_FLAG_ENUM (type) = 1; | |
13499 | ||
13500 | do_cleanups (old_chain); | |
13501 | } | |
13502 | ||
134d01f1 DJ |
13503 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
13504 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 13505 | |
f792889a | 13506 | static struct type * |
134d01f1 | 13507 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13508 | { |
e7c27a73 | 13509 | struct objfile *objfile = cu->objfile; |
c906108c | 13510 | struct type *type; |
c906108c | 13511 | struct attribute *attr; |
0114d602 | 13512 | const char *name; |
134d01f1 | 13513 | |
348e048f DE |
13514 | /* If the definition of this type lives in .debug_types, read that type. |
13515 | Don't follow DW_AT_specification though, that will take us back up | |
13516 | the chain and we want to go down. */ | |
45e58e77 | 13517 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13518 | if (attr) |
13519 | { | |
ac9ec31b | 13520 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13521 | |
ac9ec31b | 13522 | /* The type's CU may not be the same as CU. |
02142a6c | 13523 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13524 | return set_die_type (die, type, cu); |
13525 | } | |
13526 | ||
c906108c SS |
13527 | type = alloc_type (objfile); |
13528 | ||
13529 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 13530 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 13531 | if (name != NULL) |
7d455152 | 13532 | TYPE_TAG_NAME (type) = name; |
c906108c | 13533 | |
0626fc76 TT |
13534 | attr = dwarf2_attr (die, DW_AT_type, cu); |
13535 | if (attr != NULL) | |
13536 | { | |
13537 | struct type *underlying_type = die_type (die, cu); | |
13538 | ||
13539 | TYPE_TARGET_TYPE (type) = underlying_type; | |
13540 | } | |
13541 | ||
e142c38c | 13542 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13543 | if (attr) |
13544 | { | |
13545 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13546 | } | |
13547 | else | |
13548 | { | |
13549 | TYPE_LENGTH (type) = 0; | |
13550 | } | |
13551 | ||
137033e9 JB |
13552 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
13553 | declared as private in the package spec, and then defined only | |
13554 | inside the package body. Such types are known as Taft Amendment | |
13555 | Types. When another package uses such a type, an incomplete DIE | |
13556 | may be generated by the compiler. */ | |
02eb380e | 13557 | if (die_is_declaration (die, cu)) |
876cecd0 | 13558 | TYPE_STUB (type) = 1; |
02eb380e | 13559 | |
0626fc76 TT |
13560 | /* Finish the creation of this type by using the enum's children. |
13561 | We must call this even when the underlying type has been provided | |
13562 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
13563 | update_enumeration_type_from_children (die, type, cu); |
13564 | ||
0626fc76 TT |
13565 | /* If this type has an underlying type that is not a stub, then we |
13566 | may use its attributes. We always use the "unsigned" attribute | |
13567 | in this situation, because ordinarily we guess whether the type | |
13568 | is unsigned -- but the guess can be wrong and the underlying type | |
13569 | can tell us the reality. However, we defer to a local size | |
13570 | attribute if one exists, because this lets the compiler override | |
13571 | the underlying type if needed. */ | |
13572 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
13573 | { | |
13574 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
13575 | if (TYPE_LENGTH (type) == 0) | |
13576 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
13577 | } | |
13578 | ||
3d567982 TT |
13579 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
13580 | ||
f792889a | 13581 | return set_die_type (die, type, cu); |
134d01f1 DJ |
13582 | } |
13583 | ||
13584 | /* Given a pointer to a die which begins an enumeration, process all | |
13585 | the dies that define the members of the enumeration, and create the | |
13586 | symbol for the enumeration type. | |
13587 | ||
13588 | NOTE: We reverse the order of the element list. */ | |
13589 | ||
13590 | static void | |
13591 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13592 | { | |
f792889a | 13593 | struct type *this_type; |
134d01f1 | 13594 | |
f792889a DJ |
13595 | this_type = get_die_type (die, cu); |
13596 | if (this_type == NULL) | |
13597 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 13598 | |
639d11d3 | 13599 | if (die->child != NULL) |
c906108c | 13600 | { |
9dc481d3 DE |
13601 | struct die_info *child_die; |
13602 | struct symbol *sym; | |
13603 | struct field *fields = NULL; | |
13604 | int num_fields = 0; | |
15d034d0 | 13605 | const char *name; |
9dc481d3 | 13606 | |
639d11d3 | 13607 | child_die = die->child; |
c906108c SS |
13608 | while (child_die && child_die->tag) |
13609 | { | |
13610 | if (child_die->tag != DW_TAG_enumerator) | |
13611 | { | |
e7c27a73 | 13612 | process_die (child_die, cu); |
c906108c SS |
13613 | } |
13614 | else | |
13615 | { | |
39cbfefa DJ |
13616 | name = dwarf2_name (child_die, cu); |
13617 | if (name) | |
c906108c | 13618 | { |
f792889a | 13619 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
13620 | |
13621 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13622 | { | |
13623 | fields = (struct field *) | |
13624 | xrealloc (fields, | |
13625 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13626 | * sizeof (struct field)); |
c906108c SS |
13627 | } |
13628 | ||
3567439c | 13629 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 13630 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 13631 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
13632 | FIELD_BITSIZE (fields[num_fields]) = 0; |
13633 | ||
13634 | num_fields++; | |
13635 | } | |
13636 | } | |
13637 | ||
13638 | child_die = sibling_die (child_die); | |
13639 | } | |
13640 | ||
13641 | if (num_fields) | |
13642 | { | |
f792889a DJ |
13643 | TYPE_NFIELDS (this_type) = num_fields; |
13644 | TYPE_FIELDS (this_type) = (struct field *) | |
13645 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
13646 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 13647 | sizeof (struct field) * num_fields); |
b8c9b27d | 13648 | xfree (fields); |
c906108c | 13649 | } |
c906108c | 13650 | } |
134d01f1 | 13651 | |
6c83ed52 TT |
13652 | /* If we are reading an enum from a .debug_types unit, and the enum |
13653 | is a declaration, and the enum is not the signatured type in the | |
13654 | unit, then we do not want to add a symbol for it. Adding a | |
13655 | symbol would in some cases obscure the true definition of the | |
13656 | enum, giving users an incomplete type when the definition is | |
13657 | actually available. Note that we do not want to do this for all | |
13658 | enums which are just declarations, because C++0x allows forward | |
13659 | enum declarations. */ | |
3019eac3 | 13660 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
13661 | && die_is_declaration (die, cu)) |
13662 | { | |
52dc124a | 13663 | struct signatured_type *sig_type; |
6c83ed52 | 13664 | |
c0f78cd4 | 13665 | sig_type = (struct signatured_type *) cu->per_cu; |
3019eac3 DE |
13666 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
13667 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
13668 | return; |
13669 | } | |
13670 | ||
f792889a | 13671 | new_symbol (die, this_type, cu); |
c906108c SS |
13672 | } |
13673 | ||
13674 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
13675 | the DIE's type field. For now, this only handles one dimensional | |
13676 | arrays. */ | |
13677 | ||
f792889a | 13678 | static struct type * |
e7c27a73 | 13679 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13680 | { |
e7c27a73 | 13681 | struct objfile *objfile = cu->objfile; |
c906108c | 13682 | struct die_info *child_die; |
7e314c57 | 13683 | struct type *type; |
c906108c SS |
13684 | struct type *element_type, *range_type, *index_type; |
13685 | struct type **range_types = NULL; | |
13686 | struct attribute *attr; | |
13687 | int ndim = 0; | |
13688 | struct cleanup *back_to; | |
15d034d0 | 13689 | const char *name; |
dc53a7ad | 13690 | unsigned int bit_stride = 0; |
c906108c | 13691 | |
e7c27a73 | 13692 | element_type = die_type (die, cu); |
c906108c | 13693 | |
7e314c57 JK |
13694 | /* The die_type call above may have already set the type for this DIE. */ |
13695 | type = get_die_type (die, cu); | |
13696 | if (type) | |
13697 | return type; | |
13698 | ||
dc53a7ad JB |
13699 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
13700 | if (attr != NULL) | |
13701 | bit_stride = DW_UNSND (attr) * 8; | |
13702 | ||
13703 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
13704 | if (attr != NULL) | |
13705 | bit_stride = DW_UNSND (attr); | |
13706 | ||
c906108c SS |
13707 | /* Irix 6.2 native cc creates array types without children for |
13708 | arrays with unspecified length. */ | |
639d11d3 | 13709 | if (die->child == NULL) |
c906108c | 13710 | { |
46bf5051 | 13711 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 13712 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad JB |
13713 | type = create_array_type_with_stride (NULL, element_type, range_type, |
13714 | bit_stride); | |
f792889a | 13715 | return set_die_type (die, type, cu); |
c906108c SS |
13716 | } |
13717 | ||
13718 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 13719 | child_die = die->child; |
c906108c SS |
13720 | while (child_die && child_die->tag) |
13721 | { | |
13722 | if (child_die->tag == DW_TAG_subrange_type) | |
13723 | { | |
f792889a | 13724 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 13725 | |
f792889a | 13726 | if (child_type != NULL) |
a02abb62 | 13727 | { |
0963b4bd MS |
13728 | /* The range type was succesfully read. Save it for the |
13729 | array type creation. */ | |
a02abb62 JB |
13730 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
13731 | { | |
13732 | range_types = (struct type **) | |
13733 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
13734 | * sizeof (struct type *)); | |
13735 | if (ndim == 0) | |
13736 | make_cleanup (free_current_contents, &range_types); | |
13737 | } | |
f792889a | 13738 | range_types[ndim++] = child_type; |
a02abb62 | 13739 | } |
c906108c SS |
13740 | } |
13741 | child_die = sibling_die (child_die); | |
13742 | } | |
13743 | ||
13744 | /* Dwarf2 dimensions are output from left to right, create the | |
13745 | necessary array types in backwards order. */ | |
7ca2d3a3 | 13746 | |
c906108c | 13747 | type = element_type; |
7ca2d3a3 DL |
13748 | |
13749 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
13750 | { | |
13751 | int i = 0; | |
9a619af0 | 13752 | |
7ca2d3a3 | 13753 | while (i < ndim) |
dc53a7ad JB |
13754 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
13755 | bit_stride); | |
7ca2d3a3 DL |
13756 | } |
13757 | else | |
13758 | { | |
13759 | while (ndim-- > 0) | |
dc53a7ad JB |
13760 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
13761 | bit_stride); | |
7ca2d3a3 | 13762 | } |
c906108c | 13763 | |
f5f8a009 EZ |
13764 | /* Understand Dwarf2 support for vector types (like they occur on |
13765 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
13766 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
13767 | custom vendor extension. The main difference between a regular | |
13768 | array and the vector variant is that vectors are passed by value | |
13769 | to functions. */ | |
e142c38c | 13770 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 13771 | if (attr) |
ea37ba09 | 13772 | make_vector_type (type); |
f5f8a009 | 13773 | |
dbc98a8b KW |
13774 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
13775 | implementation may choose to implement triple vectors using this | |
13776 | attribute. */ | |
13777 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
13778 | if (attr) | |
13779 | { | |
13780 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
13781 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13782 | else | |
3e43a32a MS |
13783 | complaint (&symfile_complaints, |
13784 | _("DW_AT_byte_size for array type smaller " | |
13785 | "than the total size of elements")); | |
dbc98a8b KW |
13786 | } |
13787 | ||
39cbfefa DJ |
13788 | name = dwarf2_name (die, cu); |
13789 | if (name) | |
13790 | TYPE_NAME (type) = name; | |
6e70227d | 13791 | |
0963b4bd | 13792 | /* Install the type in the die. */ |
7e314c57 JK |
13793 | set_die_type (die, type, cu); |
13794 | ||
13795 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
13796 | set_descriptive_type (type, die, cu); |
13797 | ||
c906108c SS |
13798 | do_cleanups (back_to); |
13799 | ||
7e314c57 | 13800 | return type; |
c906108c SS |
13801 | } |
13802 | ||
7ca2d3a3 | 13803 | static enum dwarf_array_dim_ordering |
6e70227d | 13804 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
13805 | { |
13806 | struct attribute *attr; | |
13807 | ||
13808 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
13809 | ||
13810 | if (attr) return DW_SND (attr); | |
13811 | ||
0963b4bd MS |
13812 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
13813 | opposite order to the dwarf2 specification, but data is still | |
13814 | laid out as per normal fortran. | |
7ca2d3a3 | 13815 | |
0963b4bd MS |
13816 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
13817 | version checking. */ | |
7ca2d3a3 | 13818 | |
905e0470 PM |
13819 | if (cu->language == language_fortran |
13820 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
13821 | { |
13822 | return DW_ORD_row_major; | |
13823 | } | |
13824 | ||
6e70227d | 13825 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
13826 | { |
13827 | case array_column_major: | |
13828 | return DW_ORD_col_major; | |
13829 | case array_row_major: | |
13830 | default: | |
13831 | return DW_ORD_row_major; | |
13832 | }; | |
13833 | } | |
13834 | ||
72019c9c | 13835 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 13836 | the DIE's type field. */ |
72019c9c | 13837 | |
f792889a | 13838 | static struct type * |
72019c9c GM |
13839 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
13840 | { | |
7e314c57 JK |
13841 | struct type *domain_type, *set_type; |
13842 | struct attribute *attr; | |
f792889a | 13843 | |
7e314c57 JK |
13844 | domain_type = die_type (die, cu); |
13845 | ||
13846 | /* The die_type call above may have already set the type for this DIE. */ | |
13847 | set_type = get_die_type (die, cu); | |
13848 | if (set_type) | |
13849 | return set_type; | |
13850 | ||
13851 | set_type = create_set_type (NULL, domain_type); | |
13852 | ||
13853 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
13854 | if (attr) |
13855 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 13856 | |
f792889a | 13857 | return set_die_type (die, set_type, cu); |
72019c9c | 13858 | } |
7ca2d3a3 | 13859 | |
0971de02 TT |
13860 | /* A helper for read_common_block that creates a locexpr baton. |
13861 | SYM is the symbol which we are marking as computed. | |
13862 | COMMON_DIE is the DIE for the common block. | |
13863 | COMMON_LOC is the location expression attribute for the common | |
13864 | block itself. | |
13865 | MEMBER_LOC is the location expression attribute for the particular | |
13866 | member of the common block that we are processing. | |
13867 | CU is the CU from which the above come. */ | |
13868 | ||
13869 | static void | |
13870 | mark_common_block_symbol_computed (struct symbol *sym, | |
13871 | struct die_info *common_die, | |
13872 | struct attribute *common_loc, | |
13873 | struct attribute *member_loc, | |
13874 | struct dwarf2_cu *cu) | |
13875 | { | |
13876 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13877 | struct dwarf2_locexpr_baton *baton; | |
13878 | gdb_byte *ptr; | |
13879 | unsigned int cu_off; | |
13880 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
13881 | LONGEST offset = 0; | |
13882 | ||
13883 | gdb_assert (common_loc && member_loc); | |
13884 | gdb_assert (attr_form_is_block (common_loc)); | |
13885 | gdb_assert (attr_form_is_block (member_loc) | |
13886 | || attr_form_is_constant (member_loc)); | |
13887 | ||
13888 | baton = obstack_alloc (&objfile->objfile_obstack, | |
13889 | sizeof (struct dwarf2_locexpr_baton)); | |
13890 | baton->per_cu = cu->per_cu; | |
13891 | gdb_assert (baton->per_cu); | |
13892 | ||
13893 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
13894 | ||
13895 | if (attr_form_is_constant (member_loc)) | |
13896 | { | |
13897 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
13898 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
13899 | } | |
13900 | else | |
13901 | baton->size += DW_BLOCK (member_loc)->size; | |
13902 | ||
13903 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
13904 | baton->data = ptr; | |
13905 | ||
13906 | *ptr++ = DW_OP_call4; | |
13907 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
13908 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
13909 | ptr += 4; | |
13910 | ||
13911 | if (attr_form_is_constant (member_loc)) | |
13912 | { | |
13913 | *ptr++ = DW_OP_addr; | |
13914 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
13915 | ptr += cu->header.addr_size; | |
13916 | } | |
13917 | else | |
13918 | { | |
13919 | /* We have to copy the data here, because DW_OP_call4 will only | |
13920 | use a DW_AT_location attribute. */ | |
13921 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
13922 | ptr += DW_BLOCK (member_loc)->size; | |
13923 | } | |
13924 | ||
13925 | *ptr++ = DW_OP_plus; | |
13926 | gdb_assert (ptr - baton->data == baton->size); | |
13927 | ||
0971de02 | 13928 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 13929 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
13930 | } |
13931 | ||
4357ac6c TT |
13932 | /* Create appropriate locally-scoped variables for all the |
13933 | DW_TAG_common_block entries. Also create a struct common_block | |
13934 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
13935 | is used to sepate the common blocks name namespace from regular | |
13936 | variable names. */ | |
c906108c SS |
13937 | |
13938 | static void | |
e7c27a73 | 13939 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13940 | { |
0971de02 TT |
13941 | struct attribute *attr; |
13942 | ||
13943 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13944 | if (attr) | |
13945 | { | |
13946 | /* Support the .debug_loc offsets. */ | |
13947 | if (attr_form_is_block (attr)) | |
13948 | { | |
13949 | /* Ok. */ | |
13950 | } | |
13951 | else if (attr_form_is_section_offset (attr)) | |
13952 | { | |
13953 | dwarf2_complex_location_expr_complaint (); | |
13954 | attr = NULL; | |
13955 | } | |
13956 | else | |
13957 | { | |
13958 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
13959 | "common block member"); | |
13960 | attr = NULL; | |
13961 | } | |
13962 | } | |
13963 | ||
639d11d3 | 13964 | if (die->child != NULL) |
c906108c | 13965 | { |
4357ac6c TT |
13966 | struct objfile *objfile = cu->objfile; |
13967 | struct die_info *child_die; | |
13968 | size_t n_entries = 0, size; | |
13969 | struct common_block *common_block; | |
13970 | struct symbol *sym; | |
74ac6d43 | 13971 | |
4357ac6c TT |
13972 | for (child_die = die->child; |
13973 | child_die && child_die->tag; | |
13974 | child_die = sibling_die (child_die)) | |
13975 | ++n_entries; | |
13976 | ||
13977 | size = (sizeof (struct common_block) | |
13978 | + (n_entries - 1) * sizeof (struct symbol *)); | |
13979 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
13980 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
13981 | common_block->n_entries = 0; | |
13982 | ||
13983 | for (child_die = die->child; | |
13984 | child_die && child_die->tag; | |
13985 | child_die = sibling_die (child_die)) | |
13986 | { | |
13987 | /* Create the symbol in the DW_TAG_common_block block in the current | |
13988 | symbol scope. */ | |
e7c27a73 | 13989 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
13990 | if (sym != NULL) |
13991 | { | |
13992 | struct attribute *member_loc; | |
13993 | ||
13994 | common_block->contents[common_block->n_entries++] = sym; | |
13995 | ||
13996 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
13997 | cu); | |
13998 | if (member_loc) | |
13999 | { | |
14000 | /* GDB has handled this for a long time, but it is | |
14001 | not specified by DWARF. It seems to have been | |
14002 | emitted by gfortran at least as recently as: | |
14003 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
14004 | complaint (&symfile_complaints, | |
14005 | _("Variable in common block has " | |
14006 | "DW_AT_data_member_location " | |
14007 | "- DIE at 0x%x [in module %s]"), | |
4262abfb JK |
14008 | child_die->offset.sect_off, |
14009 | objfile_name (cu->objfile)); | |
0971de02 TT |
14010 | |
14011 | if (attr_form_is_section_offset (member_loc)) | |
14012 | dwarf2_complex_location_expr_complaint (); | |
14013 | else if (attr_form_is_constant (member_loc) | |
14014 | || attr_form_is_block (member_loc)) | |
14015 | { | |
14016 | if (attr) | |
14017 | mark_common_block_symbol_computed (sym, die, attr, | |
14018 | member_loc, cu); | |
14019 | } | |
14020 | else | |
14021 | dwarf2_complex_location_expr_complaint (); | |
14022 | } | |
14023 | } | |
c906108c | 14024 | } |
4357ac6c TT |
14025 | |
14026 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
14027 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
14028 | } |
14029 | } | |
14030 | ||
0114d602 | 14031 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 14032 | |
0114d602 DJ |
14033 | static struct type * |
14034 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 14035 | { |
e7c27a73 | 14036 | struct objfile *objfile = cu->objfile; |
0114d602 | 14037 | const char *previous_prefix, *name; |
9219021c | 14038 | int is_anonymous; |
0114d602 DJ |
14039 | struct type *type; |
14040 | ||
14041 | /* For extensions, reuse the type of the original namespace. */ | |
14042 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
14043 | { | |
14044 | struct die_info *ext_die; | |
14045 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 14046 | |
0114d602 DJ |
14047 | ext_die = dwarf2_extension (die, &ext_cu); |
14048 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
14049 | |
14050 | /* EXT_CU may not be the same as CU. | |
02142a6c | 14051 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
14052 | return set_die_type (die, type, cu); |
14053 | } | |
9219021c | 14054 | |
e142c38c | 14055 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
14056 | |
14057 | /* Now build the name of the current namespace. */ | |
14058 | ||
0114d602 DJ |
14059 | previous_prefix = determine_prefix (die, cu); |
14060 | if (previous_prefix[0] != '\0') | |
14061 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 14062 | previous_prefix, name, 0, cu); |
0114d602 DJ |
14063 | |
14064 | /* Create the type. */ | |
14065 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
14066 | objfile); | |
abee88f2 | 14067 | TYPE_NAME (type) = name; |
0114d602 DJ |
14068 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
14069 | ||
60531b24 | 14070 | return set_die_type (die, type, cu); |
0114d602 DJ |
14071 | } |
14072 | ||
14073 | /* Read a C++ namespace. */ | |
14074 | ||
14075 | static void | |
14076 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
14077 | { | |
14078 | struct objfile *objfile = cu->objfile; | |
0114d602 | 14079 | int is_anonymous; |
9219021c | 14080 | |
5c4e30ca DC |
14081 | /* Add a symbol associated to this if we haven't seen the namespace |
14082 | before. Also, add a using directive if it's an anonymous | |
14083 | namespace. */ | |
9219021c | 14084 | |
f2f0e013 | 14085 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
14086 | { |
14087 | struct type *type; | |
14088 | ||
0114d602 | 14089 | type = read_type_die (die, cu); |
e7c27a73 | 14090 | new_symbol (die, type, cu); |
5c4e30ca | 14091 | |
e8e80198 | 14092 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 14093 | if (is_anonymous) |
0114d602 DJ |
14094 | { |
14095 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 14096 | |
c0cc3a76 | 14097 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
12aaed36 | 14098 | NULL, NULL, 0, &objfile->objfile_obstack); |
0114d602 | 14099 | } |
5c4e30ca | 14100 | } |
9219021c | 14101 | |
639d11d3 | 14102 | if (die->child != NULL) |
d9fa45fe | 14103 | { |
639d11d3 | 14104 | struct die_info *child_die = die->child; |
6e70227d | 14105 | |
d9fa45fe DC |
14106 | while (child_die && child_die->tag) |
14107 | { | |
e7c27a73 | 14108 | process_die (child_die, cu); |
d9fa45fe DC |
14109 | child_die = sibling_die (child_die); |
14110 | } | |
14111 | } | |
38d518c9 EZ |
14112 | } |
14113 | ||
f55ee35c JK |
14114 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
14115 | imported module. Still we need that type as local Fortran "use ... only" | |
14116 | declaration imports depend on the created type in determine_prefix. */ | |
14117 | ||
14118 | static struct type * | |
14119 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
14120 | { | |
14121 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 14122 | const char *module_name; |
f55ee35c JK |
14123 | struct type *type; |
14124 | ||
14125 | module_name = dwarf2_name (die, cu); | |
14126 | if (!module_name) | |
3e43a32a MS |
14127 | complaint (&symfile_complaints, |
14128 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 14129 | die->offset.sect_off); |
f55ee35c JK |
14130 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
14131 | ||
14132 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
14133 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
14134 | ||
14135 | return set_die_type (die, type, cu); | |
14136 | } | |
14137 | ||
5d7cb8df JK |
14138 | /* Read a Fortran module. */ |
14139 | ||
14140 | static void | |
14141 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
14142 | { | |
14143 | struct die_info *child_die = die->child; | |
530e8392 KB |
14144 | struct type *type; |
14145 | ||
14146 | type = read_type_die (die, cu); | |
14147 | new_symbol (die, type, cu); | |
5d7cb8df | 14148 | |
5d7cb8df JK |
14149 | while (child_die && child_die->tag) |
14150 | { | |
14151 | process_die (child_die, cu); | |
14152 | child_die = sibling_die (child_die); | |
14153 | } | |
14154 | } | |
14155 | ||
38d518c9 EZ |
14156 | /* Return the name of the namespace represented by DIE. Set |
14157 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
14158 | namespace. */ | |
14159 | ||
14160 | static const char * | |
e142c38c | 14161 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
14162 | { |
14163 | struct die_info *current_die; | |
14164 | const char *name = NULL; | |
14165 | ||
14166 | /* Loop through the extensions until we find a name. */ | |
14167 | ||
14168 | for (current_die = die; | |
14169 | current_die != NULL; | |
f2f0e013 | 14170 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 14171 | { |
96553a0c DE |
14172 | /* We don't use dwarf2_name here so that we can detect the absence |
14173 | of a name -> anonymous namespace. */ | |
14174 | struct attribute *attr = dwarf2_attr (die, DW_AT_name, cu); | |
14175 | ||
14176 | if (attr != NULL) | |
14177 | name = DW_STRING (attr); | |
38d518c9 EZ |
14178 | if (name != NULL) |
14179 | break; | |
14180 | } | |
14181 | ||
14182 | /* Is it an anonymous namespace? */ | |
14183 | ||
14184 | *is_anonymous = (name == NULL); | |
14185 | if (*is_anonymous) | |
2b1dbab0 | 14186 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
14187 | |
14188 | return name; | |
d9fa45fe DC |
14189 | } |
14190 | ||
c906108c SS |
14191 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
14192 | the user defined type vector. */ | |
14193 | ||
f792889a | 14194 | static struct type * |
e7c27a73 | 14195 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14196 | { |
5e2b427d | 14197 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 14198 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 14199 | struct type *type; |
8b2dbe47 KB |
14200 | struct attribute *attr_byte_size; |
14201 | struct attribute *attr_address_class; | |
14202 | int byte_size, addr_class; | |
7e314c57 JK |
14203 | struct type *target_type; |
14204 | ||
14205 | target_type = die_type (die, cu); | |
c906108c | 14206 | |
7e314c57 JK |
14207 | /* The die_type call above may have already set the type for this DIE. */ |
14208 | type = get_die_type (die, cu); | |
14209 | if (type) | |
14210 | return type; | |
14211 | ||
14212 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 14213 | |
e142c38c | 14214 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
14215 | if (attr_byte_size) |
14216 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 14217 | else |
8b2dbe47 KB |
14218 | byte_size = cu_header->addr_size; |
14219 | ||
e142c38c | 14220 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
14221 | if (attr_address_class) |
14222 | addr_class = DW_UNSND (attr_address_class); | |
14223 | else | |
14224 | addr_class = DW_ADDR_none; | |
14225 | ||
14226 | /* If the pointer size or address class is different than the | |
14227 | default, create a type variant marked as such and set the | |
14228 | length accordingly. */ | |
14229 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 14230 | { |
5e2b427d | 14231 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
14232 | { |
14233 | int type_flags; | |
14234 | ||
849957d9 | 14235 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 14236 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
14237 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
14238 | == 0); | |
8b2dbe47 KB |
14239 | type = make_type_with_address_space (type, type_flags); |
14240 | } | |
14241 | else if (TYPE_LENGTH (type) != byte_size) | |
14242 | { | |
3e43a32a MS |
14243 | complaint (&symfile_complaints, |
14244 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 14245 | } |
6e70227d | 14246 | else |
9a619af0 MS |
14247 | { |
14248 | /* Should we also complain about unhandled address classes? */ | |
14249 | } | |
c906108c | 14250 | } |
8b2dbe47 KB |
14251 | |
14252 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 14253 | return set_die_type (die, type, cu); |
c906108c SS |
14254 | } |
14255 | ||
14256 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
14257 | the user defined type vector. */ | |
14258 | ||
f792889a | 14259 | static struct type * |
e7c27a73 | 14260 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
14261 | { |
14262 | struct type *type; | |
14263 | struct type *to_type; | |
14264 | struct type *domain; | |
14265 | ||
e7c27a73 DJ |
14266 | to_type = die_type (die, cu); |
14267 | domain = die_containing_type (die, cu); | |
0d5de010 | 14268 | |
7e314c57 JK |
14269 | /* The calls above may have already set the type for this DIE. */ |
14270 | type = get_die_type (die, cu); | |
14271 | if (type) | |
14272 | return type; | |
14273 | ||
0d5de010 DJ |
14274 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
14275 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
14276 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
14277 | { | |
14278 | struct type *new_type = alloc_type (cu->objfile); | |
14279 | ||
14280 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
14281 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
14282 | TYPE_VARARGS (to_type)); | |
14283 | type = lookup_methodptr_type (new_type); | |
14284 | } | |
0d5de010 DJ |
14285 | else |
14286 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 14287 | |
f792889a | 14288 | return set_die_type (die, type, cu); |
c906108c SS |
14289 | } |
14290 | ||
14291 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
14292 | the user defined type vector. */ | |
14293 | ||
f792889a | 14294 | static struct type * |
e7c27a73 | 14295 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14296 | { |
e7c27a73 | 14297 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 14298 | struct type *type, *target_type; |
c906108c SS |
14299 | struct attribute *attr; |
14300 | ||
7e314c57 JK |
14301 | target_type = die_type (die, cu); |
14302 | ||
14303 | /* The die_type call above may have already set the type for this DIE. */ | |
14304 | type = get_die_type (die, cu); | |
14305 | if (type) | |
14306 | return type; | |
14307 | ||
14308 | type = lookup_reference_type (target_type); | |
e142c38c | 14309 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14310 | if (attr) |
14311 | { | |
14312 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
14313 | } | |
14314 | else | |
14315 | { | |
107d2387 | 14316 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 14317 | } |
f792889a | 14318 | return set_die_type (die, type, cu); |
c906108c SS |
14319 | } |
14320 | ||
cf363f18 MW |
14321 | /* Add the given cv-qualifiers to the element type of the array. GCC |
14322 | outputs DWARF type qualifiers that apply to an array, not the | |
14323 | element type. But GDB relies on the array element type to carry | |
14324 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
14325 | specification. */ | |
14326 | ||
14327 | static struct type * | |
14328 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
14329 | struct type *base_type, int cnst, int voltl) | |
14330 | { | |
14331 | struct type *el_type, *inner_array; | |
14332 | ||
14333 | base_type = copy_type (base_type); | |
14334 | inner_array = base_type; | |
14335 | ||
14336 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
14337 | { | |
14338 | TYPE_TARGET_TYPE (inner_array) = | |
14339 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
14340 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
14341 | } | |
14342 | ||
14343 | el_type = TYPE_TARGET_TYPE (inner_array); | |
14344 | cnst |= TYPE_CONST (el_type); | |
14345 | voltl |= TYPE_VOLATILE (el_type); | |
14346 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
14347 | ||
14348 | return set_die_type (die, base_type, cu); | |
14349 | } | |
14350 | ||
f792889a | 14351 | static struct type * |
e7c27a73 | 14352 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14353 | { |
f792889a | 14354 | struct type *base_type, *cv_type; |
c906108c | 14355 | |
e7c27a73 | 14356 | base_type = die_type (die, cu); |
7e314c57 JK |
14357 | |
14358 | /* The die_type call above may have already set the type for this DIE. */ | |
14359 | cv_type = get_die_type (die, cu); | |
14360 | if (cv_type) | |
14361 | return cv_type; | |
14362 | ||
2f608a3a KW |
14363 | /* In case the const qualifier is applied to an array type, the element type |
14364 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
14365 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 14366 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 14367 | |
f792889a DJ |
14368 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
14369 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14370 | } |
14371 | ||
f792889a | 14372 | static struct type * |
e7c27a73 | 14373 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14374 | { |
f792889a | 14375 | struct type *base_type, *cv_type; |
c906108c | 14376 | |
e7c27a73 | 14377 | base_type = die_type (die, cu); |
7e314c57 JK |
14378 | |
14379 | /* The die_type call above may have already set the type for this DIE. */ | |
14380 | cv_type = get_die_type (die, cu); | |
14381 | if (cv_type) | |
14382 | return cv_type; | |
14383 | ||
cf363f18 MW |
14384 | /* In case the volatile qualifier is applied to an array type, the |
14385 | element type is so qualified, not the array type (section 6.7.3 | |
14386 | of C99). */ | |
14387 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
14388 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
14389 | ||
f792889a DJ |
14390 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
14391 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14392 | } |
14393 | ||
06d66ee9 TT |
14394 | /* Handle DW_TAG_restrict_type. */ |
14395 | ||
14396 | static struct type * | |
14397 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
14398 | { | |
14399 | struct type *base_type, *cv_type; | |
14400 | ||
14401 | base_type = die_type (die, cu); | |
14402 | ||
14403 | /* The die_type call above may have already set the type for this DIE. */ | |
14404 | cv_type = get_die_type (die, cu); | |
14405 | if (cv_type) | |
14406 | return cv_type; | |
14407 | ||
14408 | cv_type = make_restrict_type (base_type); | |
14409 | return set_die_type (die, cv_type, cu); | |
14410 | } | |
14411 | ||
a2c2acaf MW |
14412 | /* Handle DW_TAG_atomic_type. */ |
14413 | ||
14414 | static struct type * | |
14415 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
14416 | { | |
14417 | struct type *base_type, *cv_type; | |
14418 | ||
14419 | base_type = die_type (die, cu); | |
14420 | ||
14421 | /* The die_type call above may have already set the type for this DIE. */ | |
14422 | cv_type = get_die_type (die, cu); | |
14423 | if (cv_type) | |
14424 | return cv_type; | |
14425 | ||
14426 | cv_type = make_atomic_type (base_type); | |
14427 | return set_die_type (die, cv_type, cu); | |
14428 | } | |
14429 | ||
c906108c SS |
14430 | /* Extract all information from a DW_TAG_string_type DIE and add to |
14431 | the user defined type vector. It isn't really a user defined type, | |
14432 | but it behaves like one, with other DIE's using an AT_user_def_type | |
14433 | attribute to reference it. */ | |
14434 | ||
f792889a | 14435 | static struct type * |
e7c27a73 | 14436 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14437 | { |
e7c27a73 | 14438 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 14439 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14440 | struct type *type, *range_type, *index_type, *char_type; |
14441 | struct attribute *attr; | |
14442 | unsigned int length; | |
14443 | ||
e142c38c | 14444 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
14445 | if (attr) |
14446 | { | |
14447 | length = DW_UNSND (attr); | |
14448 | } | |
14449 | else | |
14450 | { | |
0963b4bd | 14451 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 14452 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
14453 | if (attr) |
14454 | { | |
14455 | length = DW_UNSND (attr); | |
14456 | } | |
14457 | else | |
14458 | { | |
14459 | length = 1; | |
14460 | } | |
c906108c | 14461 | } |
6ccb9162 | 14462 | |
46bf5051 | 14463 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 14464 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
14465 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
14466 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 14467 | |
f792889a | 14468 | return set_die_type (die, type, cu); |
c906108c SS |
14469 | } |
14470 | ||
4d804846 JB |
14471 | /* Assuming that DIE corresponds to a function, returns nonzero |
14472 | if the function is prototyped. */ | |
14473 | ||
14474 | static int | |
14475 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
14476 | { | |
14477 | struct attribute *attr; | |
14478 | ||
14479 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
14480 | if (attr && (DW_UNSND (attr) != 0)) | |
14481 | return 1; | |
14482 | ||
14483 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
14484 | is only meaninful for C, but the concept also extends to other | |
14485 | languages that allow unprototyped functions (Eg: Objective C). | |
14486 | For all other languages, assume that functions are always | |
14487 | prototyped. */ | |
14488 | if (cu->language != language_c | |
14489 | && cu->language != language_objc | |
14490 | && cu->language != language_opencl) | |
14491 | return 1; | |
14492 | ||
14493 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
14494 | prototyped and unprototyped functions; default to prototyped, | |
14495 | since that is more common in modern code (and RealView warns | |
14496 | about unprototyped functions). */ | |
14497 | if (producer_is_realview (cu->producer)) | |
14498 | return 1; | |
14499 | ||
14500 | return 0; | |
14501 | } | |
14502 | ||
c906108c SS |
14503 | /* Handle DIES due to C code like: |
14504 | ||
14505 | struct foo | |
c5aa993b JM |
14506 | { |
14507 | int (*funcp)(int a, long l); | |
14508 | int b; | |
14509 | }; | |
c906108c | 14510 | |
0963b4bd | 14511 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 14512 | |
f792889a | 14513 | static struct type * |
e7c27a73 | 14514 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14515 | { |
bb5ed363 | 14516 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
14517 | struct type *type; /* Type that this function returns. */ |
14518 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
14519 | struct attribute *attr; |
14520 | ||
e7c27a73 | 14521 | type = die_type (die, cu); |
7e314c57 JK |
14522 | |
14523 | /* The die_type call above may have already set the type for this DIE. */ | |
14524 | ftype = get_die_type (die, cu); | |
14525 | if (ftype) | |
14526 | return ftype; | |
14527 | ||
0c8b41f1 | 14528 | ftype = lookup_function_type (type); |
c906108c | 14529 | |
4d804846 | 14530 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 14531 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 14532 | |
c055b101 CV |
14533 | /* Store the calling convention in the type if it's available in |
14534 | the subroutine die. Otherwise set the calling convention to | |
14535 | the default value DW_CC_normal. */ | |
14536 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
14537 | if (attr) |
14538 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
14539 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
14540 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
14541 | else | |
14542 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 14543 | |
743649fd MW |
14544 | /* Record whether the function returns normally to its caller or not |
14545 | if the DWARF producer set that information. */ | |
14546 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
14547 | if (attr && (DW_UNSND (attr) != 0)) | |
14548 | TYPE_NO_RETURN (ftype) = 1; | |
14549 | ||
76c10ea2 GM |
14550 | /* We need to add the subroutine type to the die immediately so |
14551 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 14552 | declared as the same subroutine type. */ |
76c10ea2 | 14553 | set_die_type (die, ftype, cu); |
6e70227d | 14554 | |
639d11d3 | 14555 | if (die->child != NULL) |
c906108c | 14556 | { |
bb5ed363 | 14557 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 14558 | struct die_info *child_die; |
8072405b | 14559 | int nparams, iparams; |
c906108c SS |
14560 | |
14561 | /* Count the number of parameters. | |
14562 | FIXME: GDB currently ignores vararg functions, but knows about | |
14563 | vararg member functions. */ | |
8072405b | 14564 | nparams = 0; |
639d11d3 | 14565 | child_die = die->child; |
c906108c SS |
14566 | while (child_die && child_die->tag) |
14567 | { | |
14568 | if (child_die->tag == DW_TAG_formal_parameter) | |
14569 | nparams++; | |
14570 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 14571 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
14572 | child_die = sibling_die (child_die); |
14573 | } | |
14574 | ||
14575 | /* Allocate storage for parameters and fill them in. */ | |
14576 | TYPE_NFIELDS (ftype) = nparams; | |
14577 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 14578 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 14579 | |
8072405b JK |
14580 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
14581 | even if we error out during the parameters reading below. */ | |
14582 | for (iparams = 0; iparams < nparams; iparams++) | |
14583 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
14584 | ||
14585 | iparams = 0; | |
639d11d3 | 14586 | child_die = die->child; |
c906108c SS |
14587 | while (child_die && child_die->tag) |
14588 | { | |
14589 | if (child_die->tag == DW_TAG_formal_parameter) | |
14590 | { | |
3ce3b1ba PA |
14591 | struct type *arg_type; |
14592 | ||
14593 | /* DWARF version 2 has no clean way to discern C++ | |
14594 | static and non-static member functions. G++ helps | |
14595 | GDB by marking the first parameter for non-static | |
14596 | member functions (which is the this pointer) as | |
14597 | artificial. We pass this information to | |
14598 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
14599 | ||
14600 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
14601 | 4.5 does not yet generate. */ | |
e142c38c | 14602 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
14603 | if (attr) |
14604 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
14605 | else | |
418835cc KS |
14606 | { |
14607 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
14608 | ||
14609 | /* GCC/43521: In java, the formal parameter | |
14610 | "this" is sometimes not marked with DW_AT_artificial. */ | |
14611 | if (cu->language == language_java) | |
14612 | { | |
14613 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 14614 | |
418835cc KS |
14615 | if (name && !strcmp (name, "this")) |
14616 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
14617 | } | |
14618 | } | |
3ce3b1ba PA |
14619 | arg_type = die_type (child_die, cu); |
14620 | ||
14621 | /* RealView does not mark THIS as const, which the testsuite | |
14622 | expects. GCC marks THIS as const in method definitions, | |
14623 | but not in the class specifications (GCC PR 43053). */ | |
14624 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
14625 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
14626 | { | |
14627 | int is_this = 0; | |
14628 | struct dwarf2_cu *arg_cu = cu; | |
14629 | const char *name = dwarf2_name (child_die, cu); | |
14630 | ||
14631 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
14632 | if (attr) | |
14633 | { | |
14634 | /* If the compiler emits this, use it. */ | |
14635 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
14636 | is_this = 1; | |
14637 | } | |
14638 | else if (name && strcmp (name, "this") == 0) | |
14639 | /* Function definitions will have the argument names. */ | |
14640 | is_this = 1; | |
14641 | else if (name == NULL && iparams == 0) | |
14642 | /* Declarations may not have the names, so like | |
14643 | elsewhere in GDB, assume an artificial first | |
14644 | argument is "this". */ | |
14645 | is_this = 1; | |
14646 | ||
14647 | if (is_this) | |
14648 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
14649 | arg_type, 0); | |
14650 | } | |
14651 | ||
14652 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
14653 | iparams++; |
14654 | } | |
14655 | child_die = sibling_die (child_die); | |
14656 | } | |
14657 | } | |
14658 | ||
76c10ea2 | 14659 | return ftype; |
c906108c SS |
14660 | } |
14661 | ||
f792889a | 14662 | static struct type * |
e7c27a73 | 14663 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14664 | { |
e7c27a73 | 14665 | struct objfile *objfile = cu->objfile; |
0114d602 | 14666 | const char *name = NULL; |
3c8e0968 | 14667 | struct type *this_type, *target_type; |
c906108c | 14668 | |
94af9270 | 14669 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 14670 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 | 14671 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
abee88f2 | 14672 | TYPE_NAME (this_type) = name; |
f792889a | 14673 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
14674 | target_type = die_type (die, cu); |
14675 | if (target_type != this_type) | |
14676 | TYPE_TARGET_TYPE (this_type) = target_type; | |
14677 | else | |
14678 | { | |
14679 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
14680 | spec and cause infinite loops in GDB. */ | |
14681 | complaint (&symfile_complaints, | |
14682 | _("Self-referential DW_TAG_typedef " | |
14683 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14684 | die->offset.sect_off, objfile_name (objfile)); |
3c8e0968 DE |
14685 | TYPE_TARGET_TYPE (this_type) = NULL; |
14686 | } | |
f792889a | 14687 | return this_type; |
c906108c SS |
14688 | } |
14689 | ||
14690 | /* Find a representation of a given base type and install | |
14691 | it in the TYPE field of the die. */ | |
14692 | ||
f792889a | 14693 | static struct type * |
e7c27a73 | 14694 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14695 | { |
e7c27a73 | 14696 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14697 | struct type *type; |
14698 | struct attribute *attr; | |
14699 | int encoding = 0, size = 0; | |
15d034d0 | 14700 | const char *name; |
6ccb9162 UW |
14701 | enum type_code code = TYPE_CODE_INT; |
14702 | int type_flags = 0; | |
14703 | struct type *target_type = NULL; | |
c906108c | 14704 | |
e142c38c | 14705 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
14706 | if (attr) |
14707 | { | |
14708 | encoding = DW_UNSND (attr); | |
14709 | } | |
e142c38c | 14710 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14711 | if (attr) |
14712 | { | |
14713 | size = DW_UNSND (attr); | |
14714 | } | |
39cbfefa | 14715 | name = dwarf2_name (die, cu); |
6ccb9162 | 14716 | if (!name) |
c906108c | 14717 | { |
6ccb9162 UW |
14718 | complaint (&symfile_complaints, |
14719 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 14720 | } |
6ccb9162 UW |
14721 | |
14722 | switch (encoding) | |
c906108c | 14723 | { |
6ccb9162 UW |
14724 | case DW_ATE_address: |
14725 | /* Turn DW_ATE_address into a void * pointer. */ | |
14726 | code = TYPE_CODE_PTR; | |
14727 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14728 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
14729 | break; | |
14730 | case DW_ATE_boolean: | |
14731 | code = TYPE_CODE_BOOL; | |
14732 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14733 | break; | |
14734 | case DW_ATE_complex_float: | |
14735 | code = TYPE_CODE_COMPLEX; | |
14736 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
14737 | break; | |
14738 | case DW_ATE_decimal_float: | |
14739 | code = TYPE_CODE_DECFLOAT; | |
14740 | break; | |
14741 | case DW_ATE_float: | |
14742 | code = TYPE_CODE_FLT; | |
14743 | break; | |
14744 | case DW_ATE_signed: | |
14745 | break; | |
14746 | case DW_ATE_unsigned: | |
14747 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
14748 | if (cu->language == language_fortran |
14749 | && name | |
61012eef | 14750 | && startswith (name, "character(")) |
3b2b8fea | 14751 | code = TYPE_CODE_CHAR; |
6ccb9162 UW |
14752 | break; |
14753 | case DW_ATE_signed_char: | |
6e70227d | 14754 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14755 | || cu->language == language_pascal |
14756 | || cu->language == language_fortran) | |
6ccb9162 UW |
14757 | code = TYPE_CODE_CHAR; |
14758 | break; | |
14759 | case DW_ATE_unsigned_char: | |
868a0084 | 14760 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14761 | || cu->language == language_pascal |
14762 | || cu->language == language_fortran) | |
6ccb9162 UW |
14763 | code = TYPE_CODE_CHAR; |
14764 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14765 | break; | |
75079b2b TT |
14766 | case DW_ATE_UTF: |
14767 | /* We just treat this as an integer and then recognize the | |
14768 | type by name elsewhere. */ | |
14769 | break; | |
14770 | ||
6ccb9162 UW |
14771 | default: |
14772 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
14773 | dwarf_type_encoding_name (encoding)); | |
14774 | break; | |
c906108c | 14775 | } |
6ccb9162 | 14776 | |
0114d602 DJ |
14777 | type = init_type (code, size, type_flags, NULL, objfile); |
14778 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
14779 | TYPE_TARGET_TYPE (type) = target_type; |
14780 | ||
0114d602 | 14781 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 14782 | TYPE_NOSIGN (type) = 1; |
0114d602 | 14783 | |
f792889a | 14784 | return set_die_type (die, type, cu); |
c906108c SS |
14785 | } |
14786 | ||
80180f79 SA |
14787 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
14788 | resulting value of the attribute into struct bound_prop. | |
14789 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
14790 | ||
14791 | static int | |
14792 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
14793 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
14794 | { | |
14795 | struct dwarf2_property_baton *baton; | |
14796 | struct obstack *obstack = &cu->objfile->objfile_obstack; | |
14797 | ||
14798 | if (attr == NULL || prop == NULL) | |
14799 | return 0; | |
14800 | ||
14801 | if (attr_form_is_block (attr)) | |
14802 | { | |
14803 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14804 | baton->referenced_type = NULL; | |
14805 | baton->locexpr.per_cu = cu->per_cu; | |
14806 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
14807 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
14808 | prop->data.baton = baton; | |
14809 | prop->kind = PROP_LOCEXPR; | |
14810 | gdb_assert (prop->data.baton != NULL); | |
14811 | } | |
14812 | else if (attr_form_is_ref (attr)) | |
14813 | { | |
14814 | struct dwarf2_cu *target_cu = cu; | |
14815 | struct die_info *target_die; | |
14816 | struct attribute *target_attr; | |
14817 | ||
14818 | target_die = follow_die_ref (die, attr, &target_cu); | |
14819 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
14820 | if (target_attr == NULL) |
14821 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
14822 | target_cu); | |
80180f79 SA |
14823 | if (target_attr == NULL) |
14824 | return 0; | |
14825 | ||
df25ebbd | 14826 | switch (target_attr->name) |
80180f79 | 14827 | { |
df25ebbd JB |
14828 | case DW_AT_location: |
14829 | if (attr_form_is_section_offset (target_attr)) | |
14830 | { | |
14831 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14832 | baton->referenced_type = die_type (target_die, target_cu); | |
14833 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
14834 | prop->data.baton = baton; | |
14835 | prop->kind = PROP_LOCLIST; | |
14836 | gdb_assert (prop->data.baton != NULL); | |
14837 | } | |
14838 | else if (attr_form_is_block (target_attr)) | |
14839 | { | |
14840 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14841 | baton->referenced_type = die_type (target_die, target_cu); | |
14842 | baton->locexpr.per_cu = cu->per_cu; | |
14843 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
14844 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
14845 | prop->data.baton = baton; | |
14846 | prop->kind = PROP_LOCEXPR; | |
14847 | gdb_assert (prop->data.baton != NULL); | |
14848 | } | |
14849 | else | |
14850 | { | |
14851 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
14852 | "dynamic property"); | |
14853 | return 0; | |
14854 | } | |
14855 | break; | |
14856 | case DW_AT_data_member_location: | |
14857 | { | |
14858 | LONGEST offset; | |
14859 | ||
14860 | if (!handle_data_member_location (target_die, target_cu, | |
14861 | &offset)) | |
14862 | return 0; | |
14863 | ||
14864 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
6ad395a7 JB |
14865 | baton->referenced_type = read_type_die (target_die->parent, |
14866 | target_cu); | |
df25ebbd JB |
14867 | baton->offset_info.offset = offset; |
14868 | baton->offset_info.type = die_type (target_die, target_cu); | |
14869 | prop->data.baton = baton; | |
14870 | prop->kind = PROP_ADDR_OFFSET; | |
14871 | break; | |
14872 | } | |
80180f79 SA |
14873 | } |
14874 | } | |
14875 | else if (attr_form_is_constant (attr)) | |
14876 | { | |
14877 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
14878 | prop->kind = PROP_CONST; | |
14879 | } | |
14880 | else | |
14881 | { | |
14882 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
14883 | dwarf2_name (die, cu)); | |
14884 | return 0; | |
14885 | } | |
14886 | ||
14887 | return 1; | |
14888 | } | |
14889 | ||
a02abb62 JB |
14890 | /* Read the given DW_AT_subrange DIE. */ |
14891 | ||
f792889a | 14892 | static struct type * |
a02abb62 JB |
14893 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
14894 | { | |
4c9ad8c2 | 14895 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
14896 | struct type *range_type; |
14897 | struct attribute *attr; | |
729efb13 | 14898 | struct dynamic_prop low, high; |
4fae6e18 | 14899 | int low_default_is_valid; |
c451ebe5 | 14900 | int high_bound_is_count = 0; |
15d034d0 | 14901 | const char *name; |
43bbcdc2 | 14902 | LONGEST negative_mask; |
e77813c8 | 14903 | |
4c9ad8c2 TT |
14904 | orig_base_type = die_type (die, cu); |
14905 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
14906 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
14907 | creating the range type, but we use the result of check_typedef | |
14908 | when examining properties of the type. */ | |
14909 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 14910 | |
7e314c57 JK |
14911 | /* The die_type call above may have already set the type for this DIE. */ |
14912 | range_type = get_die_type (die, cu); | |
14913 | if (range_type) | |
14914 | return range_type; | |
14915 | ||
729efb13 SA |
14916 | low.kind = PROP_CONST; |
14917 | high.kind = PROP_CONST; | |
14918 | high.data.const_val = 0; | |
14919 | ||
4fae6e18 JK |
14920 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
14921 | omitting DW_AT_lower_bound. */ | |
14922 | switch (cu->language) | |
6e70227d | 14923 | { |
4fae6e18 JK |
14924 | case language_c: |
14925 | case language_cplus: | |
729efb13 | 14926 | low.data.const_val = 0; |
4fae6e18 JK |
14927 | low_default_is_valid = 1; |
14928 | break; | |
14929 | case language_fortran: | |
729efb13 | 14930 | low.data.const_val = 1; |
4fae6e18 JK |
14931 | low_default_is_valid = 1; |
14932 | break; | |
14933 | case language_d: | |
14934 | case language_java: | |
14935 | case language_objc: | |
729efb13 | 14936 | low.data.const_val = 0; |
4fae6e18 JK |
14937 | low_default_is_valid = (cu->header.version >= 4); |
14938 | break; | |
14939 | case language_ada: | |
14940 | case language_m2: | |
14941 | case language_pascal: | |
729efb13 | 14942 | low.data.const_val = 1; |
4fae6e18 JK |
14943 | low_default_is_valid = (cu->header.version >= 4); |
14944 | break; | |
14945 | default: | |
729efb13 | 14946 | low.data.const_val = 0; |
4fae6e18 JK |
14947 | low_default_is_valid = 0; |
14948 | break; | |
a02abb62 JB |
14949 | } |
14950 | ||
e142c38c | 14951 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 14952 | if (attr) |
11c1ba78 | 14953 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
14954 | else if (!low_default_is_valid) |
14955 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
14956 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14957 | die->offset.sect_off, objfile_name (cu->objfile)); |
a02abb62 | 14958 | |
e142c38c | 14959 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 14960 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
14961 | { |
14962 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 14963 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 14964 | { |
c451ebe5 SA |
14965 | /* If bounds are constant do the final calculation here. */ |
14966 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
14967 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
14968 | else | |
14969 | high_bound_is_count = 1; | |
c2ff108b | 14970 | } |
e77813c8 PM |
14971 | } |
14972 | ||
14973 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
14974 | without specifying a base type. | |
14975 | In that case, the base type must be set to the type of | |
14976 | the lower bound, upper bound or count, in that order, if any of these | |
14977 | three attributes references an object that has a type. | |
14978 | If no base type is found, the Dwarf-2 specifications say that | |
14979 | a signed integer type of size equal to the size of an address should | |
14980 | be used. | |
14981 | For the following C code: `extern char gdb_int [];' | |
14982 | GCC produces an empty range DIE. | |
14983 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 14984 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
14985 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
14986 | { | |
14987 | struct objfile *objfile = cu->objfile; | |
14988 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
14989 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
14990 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
14991 | ||
14992 | /* Test "int", "long int", and "long long int" objfile types, | |
14993 | and select the first one having a size above or equal to the | |
14994 | architecture address size. */ | |
14995 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14996 | base_type = int_type; | |
14997 | else | |
14998 | { | |
14999 | int_type = objfile_type (objfile)->builtin_long; | |
15000 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15001 | base_type = int_type; | |
15002 | else | |
15003 | { | |
15004 | int_type = objfile_type (objfile)->builtin_long_long; | |
15005 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15006 | base_type = int_type; | |
15007 | } | |
15008 | } | |
15009 | } | |
a02abb62 | 15010 | |
dbb9c2b1 JB |
15011 | /* Normally, the DWARF producers are expected to use a signed |
15012 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
15013 | But this is unfortunately not always the case, as witnessed | |
15014 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
15015 | is used instead. To work around that ambiguity, we treat | |
15016 | the bounds as signed, and thus sign-extend their values, when | |
15017 | the base type is signed. */ | |
6e70227d | 15018 | negative_mask = |
43bbcdc2 | 15019 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
729efb13 SA |
15020 | if (low.kind == PROP_CONST |
15021 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
15022 | low.data.const_val |= negative_mask; | |
15023 | if (high.kind == PROP_CONST | |
15024 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
15025 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 15026 | |
729efb13 | 15027 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 15028 | |
c451ebe5 SA |
15029 | if (high_bound_is_count) |
15030 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
15031 | ||
c2ff108b JK |
15032 | /* Ada expects an empty array on no boundary attributes. */ |
15033 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 15034 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 15035 | |
39cbfefa DJ |
15036 | name = dwarf2_name (die, cu); |
15037 | if (name) | |
15038 | TYPE_NAME (range_type) = name; | |
6e70227d | 15039 | |
e142c38c | 15040 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
15041 | if (attr) |
15042 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
15043 | ||
7e314c57 JK |
15044 | set_die_type (die, range_type, cu); |
15045 | ||
15046 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
15047 | set_descriptive_type (range_type, die, cu); |
15048 | ||
7e314c57 | 15049 | return range_type; |
a02abb62 | 15050 | } |
6e70227d | 15051 | |
f792889a | 15052 | static struct type * |
81a17f79 JB |
15053 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
15054 | { | |
15055 | struct type *type; | |
81a17f79 | 15056 | |
81a17f79 JB |
15057 | /* For now, we only support the C meaning of an unspecified type: void. */ |
15058 | ||
0114d602 DJ |
15059 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
15060 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 15061 | |
f792889a | 15062 | return set_die_type (die, type, cu); |
81a17f79 | 15063 | } |
a02abb62 | 15064 | |
639d11d3 DC |
15065 | /* Read a single die and all its descendents. Set the die's sibling |
15066 | field to NULL; set other fields in the die correctly, and set all | |
15067 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
15068 | location of the info_ptr after reading all of those dies. PARENT | |
15069 | is the parent of the die in question. */ | |
15070 | ||
15071 | static struct die_info * | |
dee91e82 | 15072 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
15073 | const gdb_byte *info_ptr, |
15074 | const gdb_byte **new_info_ptr, | |
dee91e82 | 15075 | struct die_info *parent) |
639d11d3 DC |
15076 | { |
15077 | struct die_info *die; | |
d521ce57 | 15078 | const gdb_byte *cur_ptr; |
639d11d3 DC |
15079 | int has_children; |
15080 | ||
bf6af496 | 15081 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
15082 | if (die == NULL) |
15083 | { | |
15084 | *new_info_ptr = cur_ptr; | |
15085 | return NULL; | |
15086 | } | |
93311388 | 15087 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
15088 | |
15089 | if (has_children) | |
bf6af496 | 15090 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
15091 | else |
15092 | { | |
15093 | die->child = NULL; | |
15094 | *new_info_ptr = cur_ptr; | |
15095 | } | |
15096 | ||
15097 | die->sibling = NULL; | |
15098 | die->parent = parent; | |
15099 | return die; | |
15100 | } | |
15101 | ||
15102 | /* Read a die, all of its descendents, and all of its siblings; set | |
15103 | all of the fields of all of the dies correctly. Arguments are as | |
15104 | in read_die_and_children. */ | |
15105 | ||
15106 | static struct die_info * | |
bf6af496 | 15107 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
15108 | const gdb_byte *info_ptr, |
15109 | const gdb_byte **new_info_ptr, | |
bf6af496 | 15110 | struct die_info *parent) |
639d11d3 DC |
15111 | { |
15112 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 15113 | const gdb_byte *cur_ptr; |
639d11d3 | 15114 | |
c906108c | 15115 | cur_ptr = info_ptr; |
639d11d3 DC |
15116 | first_die = last_sibling = NULL; |
15117 | ||
15118 | while (1) | |
c906108c | 15119 | { |
639d11d3 | 15120 | struct die_info *die |
dee91e82 | 15121 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 15122 | |
1d325ec1 | 15123 | if (die == NULL) |
c906108c | 15124 | { |
639d11d3 DC |
15125 | *new_info_ptr = cur_ptr; |
15126 | return first_die; | |
c906108c | 15127 | } |
1d325ec1 DJ |
15128 | |
15129 | if (!first_die) | |
15130 | first_die = die; | |
c906108c | 15131 | else |
1d325ec1 DJ |
15132 | last_sibling->sibling = die; |
15133 | ||
15134 | last_sibling = die; | |
c906108c | 15135 | } |
c906108c SS |
15136 | } |
15137 | ||
bf6af496 DE |
15138 | /* Read a die, all of its descendents, and all of its siblings; set |
15139 | all of the fields of all of the dies correctly. Arguments are as | |
15140 | in read_die_and_children. | |
15141 | This the main entry point for reading a DIE and all its children. */ | |
15142 | ||
15143 | static struct die_info * | |
15144 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
15145 | const gdb_byte *info_ptr, |
15146 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
15147 | struct die_info *parent) |
15148 | { | |
15149 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
15150 | new_info_ptr, parent); | |
15151 | ||
b4f54984 | 15152 | if (dwarf_die_debug) |
bf6af496 DE |
15153 | { |
15154 | fprintf_unfiltered (gdb_stdlog, | |
15155 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15156 | get_section_name (reader->die_section), |
bf6af496 DE |
15157 | (unsigned) (info_ptr - reader->die_section->buffer), |
15158 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 15159 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
15160 | } |
15161 | ||
15162 | return die; | |
15163 | } | |
15164 | ||
3019eac3 DE |
15165 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
15166 | attributes. | |
15167 | The caller is responsible for filling in the extra attributes | |
15168 | and updating (*DIEP)->num_attrs. | |
15169 | Set DIEP to point to a newly allocated die with its information, | |
15170 | except for its child, sibling, and parent fields. | |
15171 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 15172 | |
d521ce57 | 15173 | static const gdb_byte * |
3019eac3 | 15174 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 15175 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 15176 | int *has_children, int num_extra_attrs) |
93311388 | 15177 | { |
b64f50a1 JK |
15178 | unsigned int abbrev_number, bytes_read, i; |
15179 | sect_offset offset; | |
93311388 DE |
15180 | struct abbrev_info *abbrev; |
15181 | struct die_info *die; | |
15182 | struct dwarf2_cu *cu = reader->cu; | |
15183 | bfd *abfd = reader->abfd; | |
15184 | ||
b64f50a1 | 15185 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
15186 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15187 | info_ptr += bytes_read; | |
15188 | if (!abbrev_number) | |
15189 | { | |
15190 | *diep = NULL; | |
15191 | *has_children = 0; | |
15192 | return info_ptr; | |
15193 | } | |
15194 | ||
433df2d4 | 15195 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 15196 | if (!abbrev) |
348e048f DE |
15197 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
15198 | abbrev_number, | |
15199 | bfd_get_filename (abfd)); | |
15200 | ||
3019eac3 | 15201 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
15202 | die->offset = offset; |
15203 | die->tag = abbrev->tag; | |
15204 | die->abbrev = abbrev_number; | |
15205 | ||
3019eac3 DE |
15206 | /* Make the result usable. |
15207 | The caller needs to update num_attrs after adding the extra | |
15208 | attributes. */ | |
93311388 DE |
15209 | die->num_attrs = abbrev->num_attrs; |
15210 | ||
15211 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
15212 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
15213 | info_ptr); | |
93311388 DE |
15214 | |
15215 | *diep = die; | |
15216 | *has_children = abbrev->has_children; | |
15217 | return info_ptr; | |
15218 | } | |
15219 | ||
3019eac3 DE |
15220 | /* Read a die and all its attributes. |
15221 | Set DIEP to point to a newly allocated die with its information, | |
15222 | except for its child, sibling, and parent fields. | |
15223 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
15224 | ||
d521ce57 | 15225 | static const gdb_byte * |
3019eac3 | 15226 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 15227 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
15228 | int *has_children) |
15229 | { | |
d521ce57 | 15230 | const gdb_byte *result; |
bf6af496 DE |
15231 | |
15232 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
15233 | ||
b4f54984 | 15234 | if (dwarf_die_debug) |
bf6af496 DE |
15235 | { |
15236 | fprintf_unfiltered (gdb_stdlog, | |
15237 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15238 | get_section_name (reader->die_section), |
bf6af496 DE |
15239 | (unsigned) (info_ptr - reader->die_section->buffer), |
15240 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 15241 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
15242 | } |
15243 | ||
15244 | return result; | |
3019eac3 | 15245 | } |
433df2d4 DE |
15246 | \f |
15247 | /* Abbreviation tables. | |
3019eac3 | 15248 | |
433df2d4 | 15249 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
15250 | stored in a separate .debug_abbrev section. Before we read any |
15251 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
15252 | in a hash table. */ |
15253 | ||
15254 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
15255 | ||
15256 | static struct abbrev_info * | |
15257 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
15258 | { | |
15259 | struct abbrev_info *abbrev; | |
15260 | ||
15261 | abbrev = (struct abbrev_info *) | |
15262 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
15263 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
15264 | return abbrev; | |
15265 | } | |
15266 | ||
15267 | /* Add an abbreviation to the table. */ | |
c906108c SS |
15268 | |
15269 | static void | |
433df2d4 DE |
15270 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
15271 | unsigned int abbrev_number, | |
15272 | struct abbrev_info *abbrev) | |
15273 | { | |
15274 | unsigned int hash_number; | |
15275 | ||
15276 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15277 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
15278 | abbrev_table->abbrevs[hash_number] = abbrev; | |
15279 | } | |
dee91e82 | 15280 | |
433df2d4 DE |
15281 | /* Look up an abbrev in the table. |
15282 | Returns NULL if the abbrev is not found. */ | |
15283 | ||
15284 | static struct abbrev_info * | |
15285 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
15286 | unsigned int abbrev_number) | |
c906108c | 15287 | { |
433df2d4 DE |
15288 | unsigned int hash_number; |
15289 | struct abbrev_info *abbrev; | |
15290 | ||
15291 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15292 | abbrev = abbrev_table->abbrevs[hash_number]; | |
15293 | ||
15294 | while (abbrev) | |
15295 | { | |
15296 | if (abbrev->number == abbrev_number) | |
15297 | return abbrev; | |
15298 | abbrev = abbrev->next; | |
15299 | } | |
15300 | return NULL; | |
15301 | } | |
15302 | ||
15303 | /* Read in an abbrev table. */ | |
15304 | ||
15305 | static struct abbrev_table * | |
15306 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
15307 | sect_offset offset) | |
15308 | { | |
15309 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 15310 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 15311 | struct abbrev_table *abbrev_table; |
d521ce57 | 15312 | const gdb_byte *abbrev_ptr; |
c906108c SS |
15313 | struct abbrev_info *cur_abbrev; |
15314 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 15315 | unsigned int abbrev_form; |
f3dd6933 DJ |
15316 | struct attr_abbrev *cur_attrs; |
15317 | unsigned int allocated_attrs; | |
c906108c | 15318 | |
70ba0933 | 15319 | abbrev_table = XNEW (struct abbrev_table); |
f4dc4d17 | 15320 | abbrev_table->offset = offset; |
433df2d4 DE |
15321 | obstack_init (&abbrev_table->abbrev_obstack); |
15322 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
15323 | (ABBREV_HASH_SIZE | |
15324 | * sizeof (struct abbrev_info *))); | |
15325 | memset (abbrev_table->abbrevs, 0, | |
15326 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 15327 | |
433df2d4 DE |
15328 | dwarf2_read_section (objfile, section); |
15329 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
15330 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15331 | abbrev_ptr += bytes_read; | |
15332 | ||
f3dd6933 DJ |
15333 | allocated_attrs = ATTR_ALLOC_CHUNK; |
15334 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 15335 | |
0963b4bd | 15336 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
15337 | while (abbrev_number) |
15338 | { | |
433df2d4 | 15339 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
15340 | |
15341 | /* read in abbrev header */ | |
15342 | cur_abbrev->number = abbrev_number; | |
15343 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15344 | abbrev_ptr += bytes_read; | |
15345 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
15346 | abbrev_ptr += 1; | |
15347 | ||
15348 | /* now read in declarations */ | |
15349 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15350 | abbrev_ptr += bytes_read; | |
15351 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15352 | abbrev_ptr += bytes_read; | |
15353 | while (abbrev_name) | |
15354 | { | |
f3dd6933 | 15355 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 15356 | { |
f3dd6933 DJ |
15357 | allocated_attrs += ATTR_ALLOC_CHUNK; |
15358 | cur_attrs | |
15359 | = xrealloc (cur_attrs, (allocated_attrs | |
15360 | * sizeof (struct attr_abbrev))); | |
c906108c | 15361 | } |
ae038cb0 | 15362 | |
f3dd6933 DJ |
15363 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
15364 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
15365 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15366 | abbrev_ptr += bytes_read; | |
15367 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15368 | abbrev_ptr += bytes_read; | |
15369 | } | |
15370 | ||
433df2d4 | 15371 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
15372 | (cur_abbrev->num_attrs |
15373 | * sizeof (struct attr_abbrev))); | |
15374 | memcpy (cur_abbrev->attrs, cur_attrs, | |
15375 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
15376 | ||
433df2d4 | 15377 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
15378 | |
15379 | /* Get next abbreviation. | |
15380 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
15381 | always properly terminated with an abbrev number of 0. |
15382 | Exit loop if we encounter an abbreviation which we have | |
15383 | already read (which means we are about to read the abbreviations | |
15384 | for the next compile unit) or if the end of the abbreviation | |
15385 | table is reached. */ | |
433df2d4 | 15386 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
15387 | break; |
15388 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15389 | abbrev_ptr += bytes_read; | |
433df2d4 | 15390 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
15391 | break; |
15392 | } | |
f3dd6933 DJ |
15393 | |
15394 | xfree (cur_attrs); | |
433df2d4 | 15395 | return abbrev_table; |
c906108c SS |
15396 | } |
15397 | ||
433df2d4 | 15398 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 15399 | |
c906108c | 15400 | static void |
433df2d4 | 15401 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 15402 | { |
433df2d4 DE |
15403 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
15404 | xfree (abbrev_table); | |
c906108c SS |
15405 | } |
15406 | ||
f4dc4d17 DE |
15407 | /* Same as abbrev_table_free but as a cleanup. |
15408 | We pass in a pointer to the pointer to the table so that we can | |
15409 | set the pointer to NULL when we're done. It also simplifies | |
73051182 | 15410 | build_type_psymtabs_1. */ |
f4dc4d17 DE |
15411 | |
15412 | static void | |
15413 | abbrev_table_free_cleanup (void *table_ptr) | |
15414 | { | |
15415 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
15416 | ||
15417 | if (*abbrev_table_ptr != NULL) | |
15418 | abbrev_table_free (*abbrev_table_ptr); | |
15419 | *abbrev_table_ptr = NULL; | |
15420 | } | |
15421 | ||
433df2d4 DE |
15422 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
15423 | ||
15424 | static void | |
15425 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
15426 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 15427 | { |
433df2d4 DE |
15428 | cu->abbrev_table = |
15429 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
15430 | } | |
c906108c | 15431 | |
433df2d4 | 15432 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 15433 | |
433df2d4 DE |
15434 | static void |
15435 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
15436 | { | |
15437 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 15438 | |
a2ce51a0 DE |
15439 | if (cu->abbrev_table != NULL) |
15440 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
15441 | /* Set this to NULL so that we SEGV if we try to read it later, |
15442 | and also because free_comp_unit verifies this is NULL. */ | |
15443 | cu->abbrev_table = NULL; | |
15444 | } | |
15445 | \f | |
72bf9492 DJ |
15446 | /* Returns nonzero if TAG represents a type that we might generate a partial |
15447 | symbol for. */ | |
15448 | ||
15449 | static int | |
15450 | is_type_tag_for_partial (int tag) | |
15451 | { | |
15452 | switch (tag) | |
15453 | { | |
15454 | #if 0 | |
15455 | /* Some types that would be reasonable to generate partial symbols for, | |
15456 | that we don't at present. */ | |
15457 | case DW_TAG_array_type: | |
15458 | case DW_TAG_file_type: | |
15459 | case DW_TAG_ptr_to_member_type: | |
15460 | case DW_TAG_set_type: | |
15461 | case DW_TAG_string_type: | |
15462 | case DW_TAG_subroutine_type: | |
15463 | #endif | |
15464 | case DW_TAG_base_type: | |
15465 | case DW_TAG_class_type: | |
680b30c7 | 15466 | case DW_TAG_interface_type: |
72bf9492 DJ |
15467 | case DW_TAG_enumeration_type: |
15468 | case DW_TAG_structure_type: | |
15469 | case DW_TAG_subrange_type: | |
15470 | case DW_TAG_typedef: | |
15471 | case DW_TAG_union_type: | |
15472 | return 1; | |
15473 | default: | |
15474 | return 0; | |
15475 | } | |
15476 | } | |
15477 | ||
15478 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
15479 | ||
15480 | static struct partial_die_info * | |
dee91e82 | 15481 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 15482 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 15483 | { |
dee91e82 | 15484 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15485 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
15486 | struct partial_die_info *part_die; |
15487 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
15488 | struct abbrev_info *abbrev; | |
15489 | unsigned int bytes_read; | |
5afb4e99 | 15490 | unsigned int load_all = 0; |
72bf9492 DJ |
15491 | int nesting_level = 1; |
15492 | ||
15493 | parent_die = NULL; | |
15494 | last_die = NULL; | |
15495 | ||
7adf1e79 DE |
15496 | gdb_assert (cu->per_cu != NULL); |
15497 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
15498 | load_all = 1; |
15499 | ||
72bf9492 DJ |
15500 | cu->partial_dies |
15501 | = htab_create_alloc_ex (cu->header.length / 12, | |
15502 | partial_die_hash, | |
15503 | partial_die_eq, | |
15504 | NULL, | |
15505 | &cu->comp_unit_obstack, | |
15506 | hashtab_obstack_allocate, | |
15507 | dummy_obstack_deallocate); | |
15508 | ||
15509 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
15510 | sizeof (struct partial_die_info)); | |
15511 | ||
15512 | while (1) | |
15513 | { | |
15514 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
15515 | ||
15516 | /* A NULL abbrev means the end of a series of children. */ | |
15517 | if (abbrev == NULL) | |
15518 | { | |
15519 | if (--nesting_level == 0) | |
15520 | { | |
15521 | /* PART_DIE was probably the last thing allocated on the | |
15522 | comp_unit_obstack, so we could call obstack_free | |
15523 | here. We don't do that because the waste is small, | |
15524 | and will be cleaned up when we're done with this | |
15525 | compilation unit. This way, we're also more robust | |
15526 | against other users of the comp_unit_obstack. */ | |
15527 | return first_die; | |
15528 | } | |
15529 | info_ptr += bytes_read; | |
15530 | last_die = parent_die; | |
15531 | parent_die = parent_die->die_parent; | |
15532 | continue; | |
15533 | } | |
15534 | ||
98bfdba5 PA |
15535 | /* Check for template arguments. We never save these; if |
15536 | they're seen, we just mark the parent, and go on our way. */ | |
15537 | if (parent_die != NULL | |
15538 | && cu->language == language_cplus | |
15539 | && (abbrev->tag == DW_TAG_template_type_param | |
15540 | || abbrev->tag == DW_TAG_template_value_param)) | |
15541 | { | |
15542 | parent_die->has_template_arguments = 1; | |
15543 | ||
15544 | if (!load_all) | |
15545 | { | |
15546 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 15547 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15548 | continue; |
15549 | } | |
15550 | } | |
15551 | ||
0d99eb77 | 15552 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
15553 | Skip their other children. */ |
15554 | if (!load_all | |
15555 | && cu->language == language_cplus | |
15556 | && parent_die != NULL | |
15557 | && parent_die->tag == DW_TAG_subprogram) | |
15558 | { | |
dee91e82 | 15559 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15560 | continue; |
15561 | } | |
15562 | ||
5afb4e99 DJ |
15563 | /* Check whether this DIE is interesting enough to save. Normally |
15564 | we would not be interested in members here, but there may be | |
15565 | later variables referencing them via DW_AT_specification (for | |
15566 | static members). */ | |
15567 | if (!load_all | |
15568 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 15569 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
15570 | && abbrev->tag != DW_TAG_enumerator |
15571 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 15572 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 15573 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 15574 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 15575 | && abbrev->tag != DW_TAG_module |
95554aad | 15576 | && abbrev->tag != DW_TAG_member |
74921315 KS |
15577 | && abbrev->tag != DW_TAG_imported_unit |
15578 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
15579 | { |
15580 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15581 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
15582 | continue; |
15583 | } | |
15584 | ||
dee91e82 DE |
15585 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
15586 | info_ptr); | |
72bf9492 DJ |
15587 | |
15588 | /* This two-pass algorithm for processing partial symbols has a | |
15589 | high cost in cache pressure. Thus, handle some simple cases | |
15590 | here which cover the majority of C partial symbols. DIEs | |
15591 | which neither have specification tags in them, nor could have | |
15592 | specification tags elsewhere pointing at them, can simply be | |
15593 | processed and discarded. | |
15594 | ||
15595 | This segment is also optional; scan_partial_symbols and | |
15596 | add_partial_symbol will handle these DIEs if we chain | |
15597 | them in normally. When compilers which do not emit large | |
15598 | quantities of duplicate debug information are more common, | |
15599 | this code can probably be removed. */ | |
15600 | ||
15601 | /* Any complete simple types at the top level (pretty much all | |
15602 | of them, for a language without namespaces), can be processed | |
15603 | directly. */ | |
15604 | if (parent_die == NULL | |
15605 | && part_die->has_specification == 0 | |
15606 | && part_die->is_declaration == 0 | |
d8228535 | 15607 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
15608 | || part_die->tag == DW_TAG_base_type |
15609 | || part_die->tag == DW_TAG_subrange_type)) | |
15610 | { | |
15611 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 15612 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15613 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
15614 | &objfile->static_psymbols, |
15615 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 15616 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15617 | continue; |
15618 | } | |
15619 | ||
d8228535 JK |
15620 | /* The exception for DW_TAG_typedef with has_children above is |
15621 | a workaround of GCC PR debug/47510. In the case of this complaint | |
15622 | type_name_no_tag_or_error will error on such types later. | |
15623 | ||
15624 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
15625 | it could not find the child DIEs referenced later, this is checked | |
15626 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
15627 | ||
15628 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
15629 | complaint (&symfile_complaints, | |
15630 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
15631 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 15632 | part_die->offset.sect_off, objfile_name (objfile)); |
d8228535 | 15633 | |
72bf9492 DJ |
15634 | /* If we're at the second level, and we're an enumerator, and |
15635 | our parent has no specification (meaning possibly lives in a | |
15636 | namespace elsewhere), then we can add the partial symbol now | |
15637 | instead of queueing it. */ | |
15638 | if (part_die->tag == DW_TAG_enumerator | |
15639 | && parent_die != NULL | |
15640 | && parent_die->die_parent == NULL | |
15641 | && parent_die->tag == DW_TAG_enumeration_type | |
15642 | && parent_die->has_specification == 0) | |
15643 | { | |
15644 | if (part_die->name == NULL) | |
3e43a32a MS |
15645 | complaint (&symfile_complaints, |
15646 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 15647 | else if (building_psymtab) |
04a679b8 | 15648 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15649 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
15650 | (cu->language == language_cplus |
15651 | || cu->language == language_java) | |
bb5ed363 DE |
15652 | ? &objfile->global_psymbols |
15653 | : &objfile->static_psymbols, | |
15654 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 15655 | |
dee91e82 | 15656 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15657 | continue; |
15658 | } | |
15659 | ||
15660 | /* We'll save this DIE so link it in. */ | |
15661 | part_die->die_parent = parent_die; | |
15662 | part_die->die_sibling = NULL; | |
15663 | part_die->die_child = NULL; | |
15664 | ||
15665 | if (last_die && last_die == parent_die) | |
15666 | last_die->die_child = part_die; | |
15667 | else if (last_die) | |
15668 | last_die->die_sibling = part_die; | |
15669 | ||
15670 | last_die = part_die; | |
15671 | ||
15672 | if (first_die == NULL) | |
15673 | first_die = part_die; | |
15674 | ||
15675 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
15676 | find interesting need to be in the hash table, because we | |
15677 | also have the parent/sibling/child chains; only those that we | |
15678 | might refer to by offset later during partial symbol reading. | |
15679 | ||
15680 | For now this means things that might have be the target of a | |
15681 | DW_AT_specification, DW_AT_abstract_origin, or | |
15682 | DW_AT_extension. DW_AT_extension will refer only to | |
15683 | namespaces; DW_AT_abstract_origin refers to functions (and | |
15684 | many things under the function DIE, but we do not recurse | |
15685 | into function DIEs during partial symbol reading) and | |
15686 | possibly variables as well; DW_AT_specification refers to | |
15687 | declarations. Declarations ought to have the DW_AT_declaration | |
15688 | flag. It happens that GCC forgets to put it in sometimes, but | |
15689 | only for functions, not for types. | |
15690 | ||
15691 | Adding more things than necessary to the hash table is harmless | |
15692 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
15693 | wasted time in find_partial_die, when we reread the compilation |
15694 | unit with load_all_dies set. */ | |
72bf9492 | 15695 | |
5afb4e99 | 15696 | if (load_all |
72929c62 | 15697 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 15698 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
15699 | || abbrev->tag == DW_TAG_variable |
15700 | || abbrev->tag == DW_TAG_namespace | |
15701 | || part_die->is_declaration) | |
15702 | { | |
15703 | void **slot; | |
15704 | ||
15705 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 15706 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
15707 | *slot = part_die; |
15708 | } | |
15709 | ||
15710 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
15711 | sizeof (struct partial_die_info)); | |
15712 | ||
15713 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 15714 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
15715 | languages we have to, so that we can get at method physnames |
15716 | to infer fully qualified class names, for DW_AT_specification, | |
15717 | and for C++ template arguments. For C++, we also look one level | |
15718 | inside functions to find template arguments (if the name of the | |
15719 | function does not already contain the template arguments). | |
bc30ff58 JB |
15720 | |
15721 | For Ada, we need to scan the children of subprograms and lexical | |
15722 | blocks as well because Ada allows the definition of nested | |
15723 | entities that could be interesting for the debugger, such as | |
15724 | nested subprograms for instance. */ | |
72bf9492 | 15725 | if (last_die->has_children |
5afb4e99 DJ |
15726 | && (load_all |
15727 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 15728 | || last_die->tag == DW_TAG_module |
72bf9492 | 15729 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
15730 | || (cu->language == language_cplus |
15731 | && last_die->tag == DW_TAG_subprogram | |
15732 | && (last_die->name == NULL | |
15733 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
15734 | || (cu->language != language_c |
15735 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 15736 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 15737 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
15738 | || last_die->tag == DW_TAG_union_type)) |
15739 | || (cu->language == language_ada | |
15740 | && (last_die->tag == DW_TAG_subprogram | |
15741 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
15742 | { |
15743 | nesting_level++; | |
15744 | parent_die = last_die; | |
15745 | continue; | |
15746 | } | |
15747 | ||
15748 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15749 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
15750 | |
15751 | /* Back to the top, do it again. */ | |
15752 | } | |
15753 | } | |
15754 | ||
c906108c SS |
15755 | /* Read a minimal amount of information into the minimal die structure. */ |
15756 | ||
d521ce57 | 15757 | static const gdb_byte * |
dee91e82 DE |
15758 | read_partial_die (const struct die_reader_specs *reader, |
15759 | struct partial_die_info *part_die, | |
15760 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 15761 | const gdb_byte *info_ptr) |
c906108c | 15762 | { |
dee91e82 | 15763 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15764 | struct objfile *objfile = cu->objfile; |
d521ce57 | 15765 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 15766 | unsigned int i; |
c906108c | 15767 | struct attribute attr; |
c5aa993b | 15768 | int has_low_pc_attr = 0; |
c906108c | 15769 | int has_high_pc_attr = 0; |
91da1414 | 15770 | int high_pc_relative = 0; |
c906108c | 15771 | |
72bf9492 | 15772 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 15773 | |
b64f50a1 | 15774 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
15775 | |
15776 | info_ptr += abbrev_len; | |
15777 | ||
15778 | if (abbrev == NULL) | |
15779 | return info_ptr; | |
15780 | ||
c906108c SS |
15781 | part_die->tag = abbrev->tag; |
15782 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
15783 | |
15784 | for (i = 0; i < abbrev->num_attrs; ++i) | |
15785 | { | |
dee91e82 | 15786 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
15787 | |
15788 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 15789 | partial symbol table. */ |
c906108c SS |
15790 | switch (attr.name) |
15791 | { | |
15792 | case DW_AT_name: | |
71c25dea TT |
15793 | switch (part_die->tag) |
15794 | { | |
15795 | case DW_TAG_compile_unit: | |
95554aad | 15796 | case DW_TAG_partial_unit: |
348e048f | 15797 | case DW_TAG_type_unit: |
71c25dea TT |
15798 | /* Compilation units have a DW_AT_name that is a filename, not |
15799 | a source language identifier. */ | |
15800 | case DW_TAG_enumeration_type: | |
15801 | case DW_TAG_enumerator: | |
15802 | /* These tags always have simple identifiers already; no need | |
15803 | to canonicalize them. */ | |
15804 | part_die->name = DW_STRING (&attr); | |
15805 | break; | |
15806 | default: | |
15807 | part_die->name | |
15808 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
34a68019 | 15809 | &objfile->per_bfd->storage_obstack); |
71c25dea TT |
15810 | break; |
15811 | } | |
c906108c | 15812 | break; |
31ef98ae | 15813 | case DW_AT_linkage_name: |
c906108c | 15814 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
15815 | /* Note that both forms of linkage name might appear. We |
15816 | assume they will be the same, and we only store the last | |
15817 | one we see. */ | |
94af9270 KS |
15818 | if (cu->language == language_ada) |
15819 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 15820 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
15821 | break; |
15822 | case DW_AT_low_pc: | |
15823 | has_low_pc_attr = 1; | |
31aa7e4e | 15824 | part_die->lowpc = attr_value_as_address (&attr); |
c906108c SS |
15825 | break; |
15826 | case DW_AT_high_pc: | |
15827 | has_high_pc_attr = 1; | |
31aa7e4e JB |
15828 | part_die->highpc = attr_value_as_address (&attr); |
15829 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) | |
15830 | high_pc_relative = 1; | |
c906108c SS |
15831 | break; |
15832 | case DW_AT_location: | |
0963b4bd | 15833 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
15834 | if (attr_form_is_block (&attr)) |
15835 | { | |
95554aad | 15836 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 15837 | } |
3690dd37 | 15838 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 15839 | { |
4d3c2250 | 15840 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15841 | } |
15842 | else | |
15843 | { | |
4d3c2250 KB |
15844 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
15845 | "partial symbol information"); | |
8e19ed76 | 15846 | } |
c906108c | 15847 | break; |
c906108c SS |
15848 | case DW_AT_external: |
15849 | part_die->is_external = DW_UNSND (&attr); | |
15850 | break; | |
15851 | case DW_AT_declaration: | |
15852 | part_die->is_declaration = DW_UNSND (&attr); | |
15853 | break; | |
15854 | case DW_AT_type: | |
15855 | part_die->has_type = 1; | |
15856 | break; | |
15857 | case DW_AT_abstract_origin: | |
15858 | case DW_AT_specification: | |
72bf9492 DJ |
15859 | case DW_AT_extension: |
15860 | part_die->has_specification = 1; | |
c764a876 | 15861 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
15862 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
15863 | || cu->per_cu->is_dwz); | |
c906108c SS |
15864 | break; |
15865 | case DW_AT_sibling: | |
15866 | /* Ignore absolute siblings, they might point outside of | |
15867 | the current compile unit. */ | |
15868 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
15869 | complaint (&symfile_complaints, |
15870 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 15871 | else |
b9502d3f WN |
15872 | { |
15873 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
15874 | const gdb_byte *sibling_ptr = buffer + off; | |
15875 | ||
15876 | if (sibling_ptr < info_ptr) | |
15877 | complaint (&symfile_complaints, | |
15878 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
15879 | else if (sibling_ptr > reader->buffer_end) |
15880 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
15881 | else |
15882 | part_die->sibling = sibling_ptr; | |
15883 | } | |
c906108c | 15884 | break; |
fa4028e9 JB |
15885 | case DW_AT_byte_size: |
15886 | part_die->has_byte_size = 1; | |
15887 | break; | |
ff908ebf AW |
15888 | case DW_AT_const_value: |
15889 | part_die->has_const_value = 1; | |
15890 | break; | |
68511cec CES |
15891 | case DW_AT_calling_convention: |
15892 | /* DWARF doesn't provide a way to identify a program's source-level | |
15893 | entry point. DW_AT_calling_convention attributes are only meant | |
15894 | to describe functions' calling conventions. | |
15895 | ||
15896 | However, because it's a necessary piece of information in | |
15897 | Fortran, and because DW_CC_program is the only piece of debugging | |
15898 | information whose definition refers to a 'main program' at all, | |
15899 | several compilers have begun marking Fortran main programs with | |
15900 | DW_CC_program --- even when those functions use the standard | |
15901 | calling conventions. | |
15902 | ||
15903 | So until DWARF specifies a way to provide this information and | |
15904 | compilers pick up the new representation, we'll support this | |
15905 | practice. */ | |
15906 | if (DW_UNSND (&attr) == DW_CC_program | |
15907 | && cu->language == language_fortran) | |
3d548a53 | 15908 | set_objfile_main_name (objfile, part_die->name, language_fortran); |
68511cec | 15909 | break; |
481860b3 GB |
15910 | case DW_AT_inline: |
15911 | if (DW_UNSND (&attr) == DW_INL_inlined | |
15912 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
15913 | part_die->may_be_inlined = 1; | |
15914 | break; | |
95554aad TT |
15915 | |
15916 | case DW_AT_import: | |
15917 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
15918 | { |
15919 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
15920 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
15921 | || cu->per_cu->is_dwz); | |
15922 | } | |
95554aad TT |
15923 | break; |
15924 | ||
c906108c SS |
15925 | default: |
15926 | break; | |
15927 | } | |
15928 | } | |
15929 | ||
91da1414 MW |
15930 | if (high_pc_relative) |
15931 | part_die->highpc += part_die->lowpc; | |
15932 | ||
9373cf26 JK |
15933 | if (has_low_pc_attr && has_high_pc_attr) |
15934 | { | |
15935 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
15936 | eliminate duplicate copies of functions and vtables and such. | |
15937 | The linker will arbitrarily choose one and discard the others. | |
15938 | The AT_*_pc values for such functions refer to local labels in | |
15939 | these sections. If the section from that file was discarded, the | |
15940 | labels are not in the output, so the relocs get a value of 0. | |
15941 | If this is a discarded function, mark the pc bounds as invalid, | |
15942 | so that GDB will ignore it. */ | |
15943 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
15944 | { | |
bb5ed363 | 15945 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15946 | |
15947 | complaint (&symfile_complaints, | |
15948 | _("DW_AT_low_pc %s is zero " | |
15949 | "for DIE at 0x%x [in module %s]"), | |
15950 | paddress (gdbarch, part_die->lowpc), | |
4262abfb | 15951 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15952 | } |
15953 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
15954 | else if (part_die->lowpc >= part_die->highpc) | |
15955 | { | |
bb5ed363 | 15956 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15957 | |
15958 | complaint (&symfile_complaints, | |
15959 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
15960 | "for DIE at 0x%x [in module %s]"), | |
15961 | paddress (gdbarch, part_die->lowpc), | |
15962 | paddress (gdbarch, part_die->highpc), | |
4262abfb | 15963 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15964 | } |
15965 | else | |
15966 | part_die->has_pc_info = 1; | |
15967 | } | |
85cbf3d3 | 15968 | |
c906108c SS |
15969 | return info_ptr; |
15970 | } | |
15971 | ||
72bf9492 DJ |
15972 | /* Find a cached partial DIE at OFFSET in CU. */ |
15973 | ||
15974 | static struct partial_die_info * | |
b64f50a1 | 15975 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
15976 | { |
15977 | struct partial_die_info *lookup_die = NULL; | |
15978 | struct partial_die_info part_die; | |
15979 | ||
15980 | part_die.offset = offset; | |
b64f50a1 JK |
15981 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
15982 | offset.sect_off); | |
72bf9492 | 15983 | |
72bf9492 DJ |
15984 | return lookup_die; |
15985 | } | |
15986 | ||
348e048f DE |
15987 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
15988 | except in the case of .debug_types DIEs which do not reference | |
15989 | outside their CU (they do however referencing other types via | |
55f1336d | 15990 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
15991 | |
15992 | static struct partial_die_info * | |
36586728 | 15993 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 15994 | { |
bb5ed363 | 15995 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
15996 | struct dwarf2_per_cu_data *per_cu = NULL; |
15997 | struct partial_die_info *pd = NULL; | |
72bf9492 | 15998 | |
36586728 TT |
15999 | if (offset_in_dwz == cu->per_cu->is_dwz |
16000 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
16001 | { |
16002 | pd = find_partial_die_in_comp_unit (offset, cu); | |
16003 | if (pd != NULL) | |
16004 | return pd; | |
0d99eb77 DE |
16005 | /* We missed recording what we needed. |
16006 | Load all dies and try again. */ | |
16007 | per_cu = cu->per_cu; | |
5afb4e99 | 16008 | } |
0d99eb77 DE |
16009 | else |
16010 | { | |
16011 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 16012 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
16013 | { |
16014 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
16015 | " external reference to offset 0x%lx [in module %s].\n"), | |
16016 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
16017 | bfd_get_filename (objfile->obfd)); | |
16018 | } | |
36586728 TT |
16019 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
16020 | objfile); | |
72bf9492 | 16021 | |
0d99eb77 DE |
16022 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
16023 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 16024 | |
0d99eb77 DE |
16025 | per_cu->cu->last_used = 0; |
16026 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
16027 | } | |
5afb4e99 | 16028 | |
dee91e82 DE |
16029 | /* If we didn't find it, and not all dies have been loaded, |
16030 | load them all and try again. */ | |
16031 | ||
5afb4e99 DJ |
16032 | if (pd == NULL && per_cu->load_all_dies == 0) |
16033 | { | |
5afb4e99 | 16034 | per_cu->load_all_dies = 1; |
fd820528 DE |
16035 | |
16036 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
16037 | THIS_CU->cu may already be in use. So we can't just free it and | |
16038 | replace its DIEs with the ones we read in. Instead, we leave those | |
16039 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
16040 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
16041 | set. */ | |
dee91e82 | 16042 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
16043 | |
16044 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
16045 | } | |
16046 | ||
16047 | if (pd == NULL) | |
16048 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
16049 | _("could not find partial DIE 0x%x " |
16050 | "in cache [from module %s]\n"), | |
b64f50a1 | 16051 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 16052 | return pd; |
72bf9492 DJ |
16053 | } |
16054 | ||
abc72ce4 DE |
16055 | /* See if we can figure out if the class lives in a namespace. We do |
16056 | this by looking for a member function; its demangled name will | |
16057 | contain namespace info, if there is any. */ | |
16058 | ||
16059 | static void | |
16060 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
16061 | struct dwarf2_cu *cu) | |
16062 | { | |
16063 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
16064 | what template types look like, because the demangler | |
16065 | frequently doesn't give the same name as the debug info. We | |
16066 | could fix this by only using the demangled name to get the | |
16067 | prefix (but see comment in read_structure_type). */ | |
16068 | ||
16069 | struct partial_die_info *real_pdi; | |
16070 | struct partial_die_info *child_pdi; | |
16071 | ||
16072 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
16073 | we should not do this. We'll prepend the parent's fully qualified | |
16074 | name when we create the partial symbol. */ | |
16075 | ||
16076 | real_pdi = struct_pdi; | |
16077 | while (real_pdi->has_specification) | |
36586728 TT |
16078 | real_pdi = find_partial_die (real_pdi->spec_offset, |
16079 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
16080 | |
16081 | if (real_pdi->die_parent != NULL) | |
16082 | return; | |
16083 | ||
16084 | for (child_pdi = struct_pdi->die_child; | |
16085 | child_pdi != NULL; | |
16086 | child_pdi = child_pdi->die_sibling) | |
16087 | { | |
16088 | if (child_pdi->tag == DW_TAG_subprogram | |
16089 | && child_pdi->linkage_name != NULL) | |
16090 | { | |
16091 | char *actual_class_name | |
16092 | = language_class_name_from_physname (cu->language_defn, | |
16093 | child_pdi->linkage_name); | |
16094 | if (actual_class_name != NULL) | |
16095 | { | |
16096 | struct_pdi->name | |
34a68019 | 16097 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb TT |
16098 | actual_class_name, |
16099 | strlen (actual_class_name)); | |
abc72ce4 DE |
16100 | xfree (actual_class_name); |
16101 | } | |
16102 | break; | |
16103 | } | |
16104 | } | |
16105 | } | |
16106 | ||
72bf9492 DJ |
16107 | /* Adjust PART_DIE before generating a symbol for it. This function |
16108 | may set the is_external flag or change the DIE's name. */ | |
16109 | ||
16110 | static void | |
16111 | fixup_partial_die (struct partial_die_info *part_die, | |
16112 | struct dwarf2_cu *cu) | |
16113 | { | |
abc72ce4 DE |
16114 | /* Once we've fixed up a die, there's no point in doing so again. |
16115 | This also avoids a memory leak if we were to call | |
16116 | guess_partial_die_structure_name multiple times. */ | |
16117 | if (part_die->fixup_called) | |
16118 | return; | |
16119 | ||
72bf9492 DJ |
16120 | /* If we found a reference attribute and the DIE has no name, try |
16121 | to find a name in the referred to DIE. */ | |
16122 | ||
16123 | if (part_die->name == NULL && part_die->has_specification) | |
16124 | { | |
16125 | struct partial_die_info *spec_die; | |
72bf9492 | 16126 | |
36586728 TT |
16127 | spec_die = find_partial_die (part_die->spec_offset, |
16128 | part_die->spec_is_dwz, cu); | |
72bf9492 | 16129 | |
10b3939b | 16130 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
16131 | |
16132 | if (spec_die->name) | |
16133 | { | |
16134 | part_die->name = spec_die->name; | |
16135 | ||
16136 | /* Copy DW_AT_external attribute if it is set. */ | |
16137 | if (spec_die->is_external) | |
16138 | part_die->is_external = spec_die->is_external; | |
16139 | } | |
16140 | } | |
16141 | ||
16142 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
16143 | |
16144 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 16145 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 16146 | |
abc72ce4 DE |
16147 | /* If there is no parent die to provide a namespace, and there are |
16148 | children, see if we can determine the namespace from their linkage | |
122d1940 | 16149 | name. */ |
abc72ce4 | 16150 | if (cu->language == language_cplus |
8b70b953 | 16151 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
16152 | && part_die->die_parent == NULL |
16153 | && part_die->has_children | |
16154 | && (part_die->tag == DW_TAG_class_type | |
16155 | || part_die->tag == DW_TAG_structure_type | |
16156 | || part_die->tag == DW_TAG_union_type)) | |
16157 | guess_partial_die_structure_name (part_die, cu); | |
16158 | ||
53832f31 TT |
16159 | /* GCC might emit a nameless struct or union that has a linkage |
16160 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
16161 | if (part_die->name == NULL | |
96408a79 SA |
16162 | && (part_die->tag == DW_TAG_class_type |
16163 | || part_die->tag == DW_TAG_interface_type | |
16164 | || part_die->tag == DW_TAG_structure_type | |
16165 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
16166 | && part_die->linkage_name != NULL) |
16167 | { | |
16168 | char *demangled; | |
16169 | ||
8de20a37 | 16170 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
16171 | if (demangled) |
16172 | { | |
96408a79 SA |
16173 | const char *base; |
16174 | ||
16175 | /* Strip any leading namespaces/classes, keep only the base name. | |
16176 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
16177 | base = strrchr (demangled, ':'); | |
16178 | if (base && base > demangled && base[-1] == ':') | |
16179 | base++; | |
16180 | else | |
16181 | base = demangled; | |
16182 | ||
34a68019 TT |
16183 | part_die->name |
16184 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
16185 | base, strlen (base)); | |
53832f31 TT |
16186 | xfree (demangled); |
16187 | } | |
16188 | } | |
16189 | ||
abc72ce4 | 16190 | part_die->fixup_called = 1; |
72bf9492 DJ |
16191 | } |
16192 | ||
a8329558 | 16193 | /* Read an attribute value described by an attribute form. */ |
c906108c | 16194 | |
d521ce57 | 16195 | static const gdb_byte * |
dee91e82 DE |
16196 | read_attribute_value (const struct die_reader_specs *reader, |
16197 | struct attribute *attr, unsigned form, | |
d521ce57 | 16198 | const gdb_byte *info_ptr) |
c906108c | 16199 | { |
dee91e82 | 16200 | struct dwarf2_cu *cu = reader->cu; |
3e29f34a MR |
16201 | struct objfile *objfile = cu->objfile; |
16202 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
dee91e82 | 16203 | bfd *abfd = reader->abfd; |
e7c27a73 | 16204 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16205 | unsigned int bytes_read; |
16206 | struct dwarf_block *blk; | |
16207 | ||
a8329558 KW |
16208 | attr->form = form; |
16209 | switch (form) | |
c906108c | 16210 | { |
c906108c | 16211 | case DW_FORM_ref_addr: |
ae411497 | 16212 | if (cu->header.version == 2) |
4568ecf9 | 16213 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 16214 | else |
4568ecf9 DE |
16215 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
16216 | &cu->header, &bytes_read); | |
ae411497 TT |
16217 | info_ptr += bytes_read; |
16218 | break; | |
36586728 TT |
16219 | case DW_FORM_GNU_ref_alt: |
16220 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16221 | info_ptr += bytes_read; | |
16222 | break; | |
ae411497 | 16223 | case DW_FORM_addr: |
e7c27a73 | 16224 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 16225 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 16226 | info_ptr += bytes_read; |
c906108c SS |
16227 | break; |
16228 | case DW_FORM_block2: | |
7b5a2f43 | 16229 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16230 | blk->size = read_2_bytes (abfd, info_ptr); |
16231 | info_ptr += 2; | |
16232 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16233 | info_ptr += blk->size; | |
16234 | DW_BLOCK (attr) = blk; | |
16235 | break; | |
16236 | case DW_FORM_block4: | |
7b5a2f43 | 16237 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16238 | blk->size = read_4_bytes (abfd, info_ptr); |
16239 | info_ptr += 4; | |
16240 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16241 | info_ptr += blk->size; | |
16242 | DW_BLOCK (attr) = blk; | |
16243 | break; | |
16244 | case DW_FORM_data2: | |
16245 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
16246 | info_ptr += 2; | |
16247 | break; | |
16248 | case DW_FORM_data4: | |
16249 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
16250 | info_ptr += 4; | |
16251 | break; | |
16252 | case DW_FORM_data8: | |
16253 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
16254 | info_ptr += 8; | |
16255 | break; | |
2dc7f7b3 TT |
16256 | case DW_FORM_sec_offset: |
16257 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16258 | info_ptr += bytes_read; | |
16259 | break; | |
c906108c | 16260 | case DW_FORM_string: |
9b1c24c8 | 16261 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 16262 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
16263 | info_ptr += bytes_read; |
16264 | break; | |
4bdf3d34 | 16265 | case DW_FORM_strp: |
36586728 TT |
16266 | if (!cu->per_cu->is_dwz) |
16267 | { | |
16268 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
16269 | &bytes_read); | |
16270 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16271 | info_ptr += bytes_read; | |
16272 | break; | |
16273 | } | |
16274 | /* FALLTHROUGH */ | |
16275 | case DW_FORM_GNU_strp_alt: | |
16276 | { | |
16277 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
16278 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
16279 | &bytes_read); | |
16280 | ||
16281 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
16282 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16283 | info_ptr += bytes_read; | |
16284 | } | |
4bdf3d34 | 16285 | break; |
2dc7f7b3 | 16286 | case DW_FORM_exprloc: |
c906108c | 16287 | case DW_FORM_block: |
7b5a2f43 | 16288 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16289 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16290 | info_ptr += bytes_read; | |
16291 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16292 | info_ptr += blk->size; | |
16293 | DW_BLOCK (attr) = blk; | |
16294 | break; | |
16295 | case DW_FORM_block1: | |
7b5a2f43 | 16296 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16297 | blk->size = read_1_byte (abfd, info_ptr); |
16298 | info_ptr += 1; | |
16299 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16300 | info_ptr += blk->size; | |
16301 | DW_BLOCK (attr) = blk; | |
16302 | break; | |
16303 | case DW_FORM_data1: | |
16304 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16305 | info_ptr += 1; | |
16306 | break; | |
16307 | case DW_FORM_flag: | |
16308 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16309 | info_ptr += 1; | |
16310 | break; | |
2dc7f7b3 TT |
16311 | case DW_FORM_flag_present: |
16312 | DW_UNSND (attr) = 1; | |
16313 | break; | |
c906108c SS |
16314 | case DW_FORM_sdata: |
16315 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
16316 | info_ptr += bytes_read; | |
16317 | break; | |
16318 | case DW_FORM_udata: | |
16319 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16320 | info_ptr += bytes_read; | |
16321 | break; | |
16322 | case DW_FORM_ref1: | |
4568ecf9 DE |
16323 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16324 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
16325 | info_ptr += 1; |
16326 | break; | |
16327 | case DW_FORM_ref2: | |
4568ecf9 DE |
16328 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16329 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
16330 | info_ptr += 2; |
16331 | break; | |
16332 | case DW_FORM_ref4: | |
4568ecf9 DE |
16333 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16334 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
16335 | info_ptr += 4; |
16336 | break; | |
613e1657 | 16337 | case DW_FORM_ref8: |
4568ecf9 DE |
16338 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16339 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
16340 | info_ptr += 8; |
16341 | break; | |
55f1336d | 16342 | case DW_FORM_ref_sig8: |
ac9ec31b | 16343 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
16344 | info_ptr += 8; |
16345 | break; | |
c906108c | 16346 | case DW_FORM_ref_udata: |
4568ecf9 DE |
16347 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16348 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
16349 | info_ptr += bytes_read; |
16350 | break; | |
c906108c | 16351 | case DW_FORM_indirect: |
a8329558 KW |
16352 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16353 | info_ptr += bytes_read; | |
dee91e82 | 16354 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 16355 | break; |
3019eac3 DE |
16356 | case DW_FORM_GNU_addr_index: |
16357 | if (reader->dwo_file == NULL) | |
16358 | { | |
16359 | /* For now flag a hard error. | |
16360 | Later we can turn this into a complaint. */ | |
16361 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16362 | dwarf_form_name (form), | |
16363 | bfd_get_filename (abfd)); | |
16364 | } | |
16365 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
16366 | info_ptr += bytes_read; | |
16367 | break; | |
16368 | case DW_FORM_GNU_str_index: | |
16369 | if (reader->dwo_file == NULL) | |
16370 | { | |
16371 | /* For now flag a hard error. | |
16372 | Later we can turn this into a complaint if warranted. */ | |
16373 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16374 | dwarf_form_name (form), | |
16375 | bfd_get_filename (abfd)); | |
16376 | } | |
16377 | { | |
16378 | ULONGEST str_index = | |
16379 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16380 | ||
342587c4 | 16381 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
16382 | DW_STRING_IS_CANONICAL (attr) = 0; |
16383 | info_ptr += bytes_read; | |
16384 | } | |
16385 | break; | |
c906108c | 16386 | default: |
8a3fe4f8 | 16387 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
16388 | dwarf_form_name (form), |
16389 | bfd_get_filename (abfd)); | |
c906108c | 16390 | } |
28e94949 | 16391 | |
36586728 | 16392 | /* Super hack. */ |
7771576e | 16393 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
16394 | attr->form = DW_FORM_GNU_ref_alt; |
16395 | ||
28e94949 JB |
16396 | /* We have seen instances where the compiler tried to emit a byte |
16397 | size attribute of -1 which ended up being encoded as an unsigned | |
16398 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
16399 | an object of this size seems pretty unlikely so we can relatively | |
16400 | safely treat these cases as if the size attribute was invalid and | |
16401 | treat them as zero by default. */ | |
16402 | if (attr->name == DW_AT_byte_size | |
16403 | && form == DW_FORM_data4 | |
16404 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
16405 | { |
16406 | complaint | |
16407 | (&symfile_complaints, | |
43bbcdc2 PH |
16408 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
16409 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
16410 | DW_UNSND (attr) = 0; |
16411 | } | |
28e94949 | 16412 | |
c906108c SS |
16413 | return info_ptr; |
16414 | } | |
16415 | ||
a8329558 KW |
16416 | /* Read an attribute described by an abbreviated attribute. */ |
16417 | ||
d521ce57 | 16418 | static const gdb_byte * |
dee91e82 DE |
16419 | read_attribute (const struct die_reader_specs *reader, |
16420 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 16421 | const gdb_byte *info_ptr) |
a8329558 KW |
16422 | { |
16423 | attr->name = abbrev->name; | |
dee91e82 | 16424 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
16425 | } |
16426 | ||
0963b4bd | 16427 | /* Read dwarf information from a buffer. */ |
c906108c SS |
16428 | |
16429 | static unsigned int | |
a1855c1d | 16430 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16431 | { |
fe1b8b76 | 16432 | return bfd_get_8 (abfd, buf); |
c906108c SS |
16433 | } |
16434 | ||
16435 | static int | |
a1855c1d | 16436 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16437 | { |
fe1b8b76 | 16438 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
16439 | } |
16440 | ||
16441 | static unsigned int | |
a1855c1d | 16442 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16443 | { |
fe1b8b76 | 16444 | return bfd_get_16 (abfd, buf); |
c906108c SS |
16445 | } |
16446 | ||
21ae7a4d | 16447 | static int |
a1855c1d | 16448 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16449 | { |
16450 | return bfd_get_signed_16 (abfd, buf); | |
16451 | } | |
16452 | ||
c906108c | 16453 | static unsigned int |
a1855c1d | 16454 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16455 | { |
fe1b8b76 | 16456 | return bfd_get_32 (abfd, buf); |
c906108c SS |
16457 | } |
16458 | ||
21ae7a4d | 16459 | static int |
a1855c1d | 16460 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16461 | { |
16462 | return bfd_get_signed_32 (abfd, buf); | |
16463 | } | |
16464 | ||
93311388 | 16465 | static ULONGEST |
a1855c1d | 16466 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16467 | { |
fe1b8b76 | 16468 | return bfd_get_64 (abfd, buf); |
c906108c SS |
16469 | } |
16470 | ||
16471 | static CORE_ADDR | |
d521ce57 | 16472 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 16473 | unsigned int *bytes_read) |
c906108c | 16474 | { |
e7c27a73 | 16475 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16476 | CORE_ADDR retval = 0; |
16477 | ||
107d2387 | 16478 | if (cu_header->signed_addr_p) |
c906108c | 16479 | { |
107d2387 AC |
16480 | switch (cu_header->addr_size) |
16481 | { | |
16482 | case 2: | |
fe1b8b76 | 16483 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
16484 | break; |
16485 | case 4: | |
fe1b8b76 | 16486 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
16487 | break; |
16488 | case 8: | |
fe1b8b76 | 16489 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
16490 | break; |
16491 | default: | |
8e65ff28 | 16492 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 16493 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 16494 | bfd_get_filename (abfd)); |
107d2387 AC |
16495 | } |
16496 | } | |
16497 | else | |
16498 | { | |
16499 | switch (cu_header->addr_size) | |
16500 | { | |
16501 | case 2: | |
fe1b8b76 | 16502 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
16503 | break; |
16504 | case 4: | |
fe1b8b76 | 16505 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
16506 | break; |
16507 | case 8: | |
fe1b8b76 | 16508 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
16509 | break; |
16510 | default: | |
8e65ff28 | 16511 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
16512 | _("read_address: bad switch, " |
16513 | "unsigned [in module %s]"), | |
659b0389 | 16514 | bfd_get_filename (abfd)); |
107d2387 | 16515 | } |
c906108c | 16516 | } |
64367e0a | 16517 | |
107d2387 AC |
16518 | *bytes_read = cu_header->addr_size; |
16519 | return retval; | |
c906108c SS |
16520 | } |
16521 | ||
f7ef9339 | 16522 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
16523 | specification allows the initial length to take up either 4 bytes |
16524 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
16525 | bytes describe the length and all offsets will be 8 bytes in length | |
16526 | instead of 4. | |
16527 | ||
f7ef9339 KB |
16528 | An older, non-standard 64-bit format is also handled by this |
16529 | function. The older format in question stores the initial length | |
16530 | as an 8-byte quantity without an escape value. Lengths greater | |
16531 | than 2^32 aren't very common which means that the initial 4 bytes | |
16532 | is almost always zero. Since a length value of zero doesn't make | |
16533 | sense for the 32-bit format, this initial zero can be considered to | |
16534 | be an escape value which indicates the presence of the older 64-bit | |
16535 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
16536 | greater than 4GB. If it becomes necessary to handle lengths |
16537 | somewhat larger than 4GB, we could allow other small values (such | |
16538 | as the non-sensical values of 1, 2, and 3) to also be used as | |
16539 | escape values indicating the presence of the old format. | |
f7ef9339 | 16540 | |
917c78fc MK |
16541 | The value returned via bytes_read should be used to increment the |
16542 | relevant pointer after calling read_initial_length(). | |
c764a876 | 16543 | |
613e1657 KB |
16544 | [ Note: read_initial_length() and read_offset() are based on the |
16545 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 16546 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
16547 | from: |
16548 | ||
f7ef9339 | 16549 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 16550 | |
613e1657 KB |
16551 | This document is only a draft and is subject to change. (So beware.) |
16552 | ||
f7ef9339 | 16553 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
16554 | determined empirically by examining 64-bit ELF files produced by |
16555 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
16556 | |
16557 | - Kevin, July 16, 2002 | |
613e1657 KB |
16558 | ] */ |
16559 | ||
16560 | static LONGEST | |
d521ce57 | 16561 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 16562 | { |
fe1b8b76 | 16563 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 16564 | |
dd373385 | 16565 | if (length == 0xffffffff) |
613e1657 | 16566 | { |
fe1b8b76 | 16567 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 16568 | *bytes_read = 12; |
613e1657 | 16569 | } |
dd373385 | 16570 | else if (length == 0) |
f7ef9339 | 16571 | { |
dd373385 | 16572 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 16573 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 16574 | *bytes_read = 8; |
f7ef9339 | 16575 | } |
613e1657 KB |
16576 | else |
16577 | { | |
16578 | *bytes_read = 4; | |
613e1657 KB |
16579 | } |
16580 | ||
c764a876 DE |
16581 | return length; |
16582 | } | |
dd373385 | 16583 | |
c764a876 DE |
16584 | /* Cover function for read_initial_length. |
16585 | Returns the length of the object at BUF, and stores the size of the | |
16586 | initial length in *BYTES_READ and stores the size that offsets will be in | |
16587 | *OFFSET_SIZE. | |
16588 | If the initial length size is not equivalent to that specified in | |
16589 | CU_HEADER then issue a complaint. | |
16590 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 16591 | |
c764a876 | 16592 | static LONGEST |
d521ce57 | 16593 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
16594 | const struct comp_unit_head *cu_header, |
16595 | unsigned int *bytes_read, | |
16596 | unsigned int *offset_size) | |
16597 | { | |
16598 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
16599 | ||
16600 | gdb_assert (cu_header->initial_length_size == 4 | |
16601 | || cu_header->initial_length_size == 8 | |
16602 | || cu_header->initial_length_size == 12); | |
16603 | ||
16604 | if (cu_header->initial_length_size != *bytes_read) | |
16605 | complaint (&symfile_complaints, | |
16606 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 16607 | |
c764a876 | 16608 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 16609 | return length; |
613e1657 KB |
16610 | } |
16611 | ||
16612 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 16613 | given by cu_header->offset_size. */ |
613e1657 KB |
16614 | |
16615 | static LONGEST | |
d521ce57 TT |
16616 | read_offset (bfd *abfd, const gdb_byte *buf, |
16617 | const struct comp_unit_head *cu_header, | |
891d2f0b | 16618 | unsigned int *bytes_read) |
c764a876 DE |
16619 | { |
16620 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 16621 | |
c764a876 DE |
16622 | *bytes_read = cu_header->offset_size; |
16623 | return offset; | |
16624 | } | |
16625 | ||
16626 | /* Read an offset from the data stream. */ | |
16627 | ||
16628 | static LONGEST | |
d521ce57 | 16629 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
16630 | { |
16631 | LONGEST retval = 0; | |
16632 | ||
c764a876 | 16633 | switch (offset_size) |
613e1657 KB |
16634 | { |
16635 | case 4: | |
fe1b8b76 | 16636 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
16637 | break; |
16638 | case 8: | |
fe1b8b76 | 16639 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
16640 | break; |
16641 | default: | |
8e65ff28 | 16642 | internal_error (__FILE__, __LINE__, |
c764a876 | 16643 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 16644 | bfd_get_filename (abfd)); |
613e1657 KB |
16645 | } |
16646 | ||
917c78fc | 16647 | return retval; |
613e1657 KB |
16648 | } |
16649 | ||
d521ce57 TT |
16650 | static const gdb_byte * |
16651 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
16652 | { |
16653 | /* If the size of a host char is 8 bits, we can return a pointer | |
16654 | to the buffer, otherwise we have to copy the data to a buffer | |
16655 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16656 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 16657 | return buf; |
c906108c SS |
16658 | } |
16659 | ||
d521ce57 TT |
16660 | static const char * |
16661 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
16662 | unsigned int *bytes_read_ptr) | |
c906108c SS |
16663 | { |
16664 | /* If the size of a host char is 8 bits, we can return a pointer | |
16665 | to the string, otherwise we have to copy the string to a buffer | |
16666 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16667 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
16668 | if (*buf == '\0') |
16669 | { | |
16670 | *bytes_read_ptr = 1; | |
16671 | return NULL; | |
16672 | } | |
d521ce57 TT |
16673 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
16674 | return (const char *) buf; | |
4bdf3d34 JJ |
16675 | } |
16676 | ||
d521ce57 | 16677 | static const char * |
cf2c3c16 | 16678 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 16679 | { |
be391dca | 16680 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 16681 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
16682 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
16683 | bfd_get_filename (abfd)); | |
dce234bc | 16684 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
16685 | error (_("DW_FORM_strp pointing outside of " |
16686 | ".debug_str section [in module %s]"), | |
16687 | bfd_get_filename (abfd)); | |
4bdf3d34 | 16688 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 16689 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 16690 | return NULL; |
d521ce57 | 16691 | return (const char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
16692 | } |
16693 | ||
36586728 TT |
16694 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
16695 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
16696 | the string consists of a single NUL byte, return NULL; otherwise | |
16697 | return a pointer to the string. */ | |
16698 | ||
d521ce57 | 16699 | static const char * |
36586728 TT |
16700 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
16701 | { | |
16702 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
16703 | ||
16704 | if (dwz->str.buffer == NULL) | |
16705 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
16706 | "section [in module %s]"), | |
16707 | bfd_get_filename (dwz->dwz_bfd)); | |
16708 | if (str_offset >= dwz->str.size) | |
16709 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
16710 | ".debug_str section [in module %s]"), | |
16711 | bfd_get_filename (dwz->dwz_bfd)); | |
16712 | gdb_assert (HOST_CHAR_BIT == 8); | |
16713 | if (dwz->str.buffer[str_offset] == '\0') | |
16714 | return NULL; | |
d521ce57 | 16715 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
16716 | } |
16717 | ||
d521ce57 TT |
16718 | static const char * |
16719 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
16720 | const struct comp_unit_head *cu_header, |
16721 | unsigned int *bytes_read_ptr) | |
16722 | { | |
16723 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
16724 | ||
16725 | return read_indirect_string_at_offset (abfd, str_offset); | |
16726 | } | |
16727 | ||
12df843f | 16728 | static ULONGEST |
d521ce57 TT |
16729 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
16730 | unsigned int *bytes_read_ptr) | |
c906108c | 16731 | { |
12df843f | 16732 | ULONGEST result; |
ce5d95e1 | 16733 | unsigned int num_read; |
c906108c SS |
16734 | int i, shift; |
16735 | unsigned char byte; | |
16736 | ||
16737 | result = 0; | |
16738 | shift = 0; | |
16739 | num_read = 0; | |
16740 | i = 0; | |
16741 | while (1) | |
16742 | { | |
fe1b8b76 | 16743 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16744 | buf++; |
16745 | num_read++; | |
12df843f | 16746 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
16747 | if ((byte & 128) == 0) |
16748 | { | |
16749 | break; | |
16750 | } | |
16751 | shift += 7; | |
16752 | } | |
16753 | *bytes_read_ptr = num_read; | |
16754 | return result; | |
16755 | } | |
16756 | ||
12df843f | 16757 | static LONGEST |
d521ce57 TT |
16758 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
16759 | unsigned int *bytes_read_ptr) | |
c906108c | 16760 | { |
12df843f | 16761 | LONGEST result; |
77e0b926 | 16762 | int i, shift, num_read; |
c906108c SS |
16763 | unsigned char byte; |
16764 | ||
16765 | result = 0; | |
16766 | shift = 0; | |
c906108c SS |
16767 | num_read = 0; |
16768 | i = 0; | |
16769 | while (1) | |
16770 | { | |
fe1b8b76 | 16771 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16772 | buf++; |
16773 | num_read++; | |
12df843f | 16774 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
16775 | shift += 7; |
16776 | if ((byte & 128) == 0) | |
16777 | { | |
16778 | break; | |
16779 | } | |
16780 | } | |
77e0b926 | 16781 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 16782 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
16783 | *bytes_read_ptr = num_read; |
16784 | return result; | |
16785 | } | |
16786 | ||
3019eac3 DE |
16787 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
16788 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
16789 | ADDR_SIZE is the size of addresses from the CU header. */ | |
16790 | ||
16791 | static CORE_ADDR | |
16792 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
16793 | { | |
16794 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
16795 | bfd *abfd = objfile->obfd; | |
16796 | const gdb_byte *info_ptr; | |
16797 | ||
16798 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
16799 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
16800 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 16801 | objfile_name (objfile)); |
3019eac3 DE |
16802 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
16803 | error (_("DW_FORM_addr_index pointing outside of " | |
16804 | ".debug_addr section [in module %s]"), | |
4262abfb | 16805 | objfile_name (objfile)); |
3019eac3 DE |
16806 | info_ptr = (dwarf2_per_objfile->addr.buffer |
16807 | + addr_base + addr_index * addr_size); | |
16808 | if (addr_size == 4) | |
16809 | return bfd_get_32 (abfd, info_ptr); | |
16810 | else | |
16811 | return bfd_get_64 (abfd, info_ptr); | |
16812 | } | |
16813 | ||
16814 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
16815 | ||
16816 | static CORE_ADDR | |
16817 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
16818 | { | |
16819 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
16820 | } | |
16821 | ||
16822 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
16823 | ||
16824 | static CORE_ADDR | |
d521ce57 | 16825 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
16826 | unsigned int *bytes_read) |
16827 | { | |
16828 | bfd *abfd = cu->objfile->obfd; | |
16829 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
16830 | ||
16831 | return read_addr_index (cu, addr_index); | |
16832 | } | |
16833 | ||
16834 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
16835 | back to dwarf2_read_addr_index. */ | |
16836 | ||
16837 | struct dwarf2_read_addr_index_data | |
16838 | { | |
16839 | ULONGEST addr_base; | |
16840 | int addr_size; | |
16841 | }; | |
16842 | ||
16843 | /* die_reader_func for dwarf2_read_addr_index. */ | |
16844 | ||
16845 | static void | |
16846 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 16847 | const gdb_byte *info_ptr, |
3019eac3 DE |
16848 | struct die_info *comp_unit_die, |
16849 | int has_children, | |
16850 | void *data) | |
16851 | { | |
16852 | struct dwarf2_cu *cu = reader->cu; | |
16853 | struct dwarf2_read_addr_index_data *aidata = | |
16854 | (struct dwarf2_read_addr_index_data *) data; | |
16855 | ||
16856 | aidata->addr_base = cu->addr_base; | |
16857 | aidata->addr_size = cu->header.addr_size; | |
16858 | } | |
16859 | ||
16860 | /* Given an index in .debug_addr, fetch the value. | |
16861 | NOTE: This can be called during dwarf expression evaluation, | |
16862 | long after the debug information has been read, and thus per_cu->cu | |
16863 | may no longer exist. */ | |
16864 | ||
16865 | CORE_ADDR | |
16866 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
16867 | unsigned int addr_index) | |
16868 | { | |
16869 | struct objfile *objfile = per_cu->objfile; | |
16870 | struct dwarf2_cu *cu = per_cu->cu; | |
16871 | ULONGEST addr_base; | |
16872 | int addr_size; | |
16873 | ||
16874 | /* This is intended to be called from outside this file. */ | |
16875 | dw2_setup (objfile); | |
16876 | ||
16877 | /* We need addr_base and addr_size. | |
16878 | If we don't have PER_CU->cu, we have to get it. | |
16879 | Nasty, but the alternative is storing the needed info in PER_CU, | |
16880 | which at this point doesn't seem justified: it's not clear how frequently | |
16881 | it would get used and it would increase the size of every PER_CU. | |
16882 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
16883 | so we're not in uncharted territory here. | |
16884 | Alas we need to be a bit more complicated as addr_base is contained | |
16885 | in the DIE. | |
16886 | ||
16887 | We don't need to read the entire CU(/TU). | |
16888 | We just need the header and top level die. | |
a1b64ce1 | 16889 | |
3019eac3 | 16890 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 16891 | For now we skip this optimization. */ |
3019eac3 DE |
16892 | |
16893 | if (cu != NULL) | |
16894 | { | |
16895 | addr_base = cu->addr_base; | |
16896 | addr_size = cu->header.addr_size; | |
16897 | } | |
16898 | else | |
16899 | { | |
16900 | struct dwarf2_read_addr_index_data aidata; | |
16901 | ||
a1b64ce1 DE |
16902 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
16903 | we need addr_base. */ | |
16904 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
16905 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
16906 | addr_base = aidata.addr_base; |
16907 | addr_size = aidata.addr_size; | |
16908 | } | |
16909 | ||
16910 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
16911 | } | |
16912 | ||
57d63ce2 DE |
16913 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
16914 | This is only used by the Fission support. */ | |
3019eac3 | 16915 | |
d521ce57 | 16916 | static const char * |
342587c4 | 16917 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 DE |
16918 | { |
16919 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
c5164cbc | 16920 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 16921 | bfd *abfd = objfile->obfd; |
342587c4 | 16922 | struct dwarf2_cu *cu = reader->cu; |
73869dc2 DE |
16923 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
16924 | struct dwarf2_section_info *str_offsets_section = | |
16925 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 16926 | const gdb_byte *info_ptr; |
3019eac3 | 16927 | ULONGEST str_offset; |
57d63ce2 | 16928 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 16929 | |
73869dc2 DE |
16930 | dwarf2_read_section (objfile, str_section); |
16931 | dwarf2_read_section (objfile, str_offsets_section); | |
16932 | if (str_section->buffer == NULL) | |
57d63ce2 | 16933 | error (_("%s used without .debug_str.dwo section" |
3019eac3 | 16934 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16935 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16936 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 16937 | error (_("%s used without .debug_str_offsets.dwo section" |
3019eac3 | 16938 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16939 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16940 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 16941 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
3019eac3 | 16942 | " section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16943 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16944 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
16945 | + str_index * cu->header.offset_size); |
16946 | if (cu->header.offset_size == 4) | |
16947 | str_offset = bfd_get_32 (abfd, info_ptr); | |
16948 | else | |
16949 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 16950 | if (str_offset >= str_section->size) |
57d63ce2 | 16951 | error (_("Offset from %s pointing outside of" |
3019eac3 | 16952 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16953 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16954 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
16955 | } |
16956 | ||
3019eac3 DE |
16957 | /* Return the length of an LEB128 number in BUF. */ |
16958 | ||
16959 | static int | |
16960 | leb128_size (const gdb_byte *buf) | |
16961 | { | |
16962 | const gdb_byte *begin = buf; | |
16963 | gdb_byte byte; | |
16964 | ||
16965 | while (1) | |
16966 | { | |
16967 | byte = *buf++; | |
16968 | if ((byte & 128) == 0) | |
16969 | return buf - begin; | |
16970 | } | |
16971 | } | |
16972 | ||
c906108c | 16973 | static void |
e142c38c | 16974 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
16975 | { |
16976 | switch (lang) | |
16977 | { | |
16978 | case DW_LANG_C89: | |
76bee0cc | 16979 | case DW_LANG_C99: |
0cfd832f | 16980 | case DW_LANG_C11: |
c906108c | 16981 | case DW_LANG_C: |
d1be3247 | 16982 | case DW_LANG_UPC: |
e142c38c | 16983 | cu->language = language_c; |
c906108c SS |
16984 | break; |
16985 | case DW_LANG_C_plus_plus: | |
0cfd832f MW |
16986 | case DW_LANG_C_plus_plus_11: |
16987 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 16988 | cu->language = language_cplus; |
c906108c | 16989 | break; |
6aecb9c2 JB |
16990 | case DW_LANG_D: |
16991 | cu->language = language_d; | |
16992 | break; | |
c906108c SS |
16993 | case DW_LANG_Fortran77: |
16994 | case DW_LANG_Fortran90: | |
b21b22e0 | 16995 | case DW_LANG_Fortran95: |
f7de9aab MW |
16996 | case DW_LANG_Fortran03: |
16997 | case DW_LANG_Fortran08: | |
e142c38c | 16998 | cu->language = language_fortran; |
c906108c | 16999 | break; |
a766d390 DE |
17000 | case DW_LANG_Go: |
17001 | cu->language = language_go; | |
17002 | break; | |
c906108c | 17003 | case DW_LANG_Mips_Assembler: |
e142c38c | 17004 | cu->language = language_asm; |
c906108c | 17005 | break; |
bebd888e | 17006 | case DW_LANG_Java: |
e142c38c | 17007 | cu->language = language_java; |
bebd888e | 17008 | break; |
c906108c | 17009 | case DW_LANG_Ada83: |
8aaf0b47 | 17010 | case DW_LANG_Ada95: |
bc5f45f8 JB |
17011 | cu->language = language_ada; |
17012 | break; | |
72019c9c GM |
17013 | case DW_LANG_Modula2: |
17014 | cu->language = language_m2; | |
17015 | break; | |
fe8e67fd PM |
17016 | case DW_LANG_Pascal83: |
17017 | cu->language = language_pascal; | |
17018 | break; | |
22566fbd DJ |
17019 | case DW_LANG_ObjC: |
17020 | cu->language = language_objc; | |
17021 | break; | |
c906108c SS |
17022 | case DW_LANG_Cobol74: |
17023 | case DW_LANG_Cobol85: | |
c906108c | 17024 | default: |
e142c38c | 17025 | cu->language = language_minimal; |
c906108c SS |
17026 | break; |
17027 | } | |
e142c38c | 17028 | cu->language_defn = language_def (cu->language); |
c906108c SS |
17029 | } |
17030 | ||
17031 | /* Return the named attribute or NULL if not there. */ | |
17032 | ||
17033 | static struct attribute * | |
e142c38c | 17034 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 17035 | { |
a48e046c | 17036 | for (;;) |
c906108c | 17037 | { |
a48e046c TT |
17038 | unsigned int i; |
17039 | struct attribute *spec = NULL; | |
17040 | ||
17041 | for (i = 0; i < die->num_attrs; ++i) | |
17042 | { | |
17043 | if (die->attrs[i].name == name) | |
17044 | return &die->attrs[i]; | |
17045 | if (die->attrs[i].name == DW_AT_specification | |
17046 | || die->attrs[i].name == DW_AT_abstract_origin) | |
17047 | spec = &die->attrs[i]; | |
17048 | } | |
17049 | ||
17050 | if (!spec) | |
17051 | break; | |
c906108c | 17052 | |
f2f0e013 | 17053 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 17054 | } |
c5aa993b | 17055 | |
c906108c SS |
17056 | return NULL; |
17057 | } | |
17058 | ||
348e048f DE |
17059 | /* Return the named attribute or NULL if not there, |
17060 | but do not follow DW_AT_specification, etc. | |
17061 | This is for use in contexts where we're reading .debug_types dies. | |
17062 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
17063 | back up the chain, and we want to go down. */ | |
17064 | ||
17065 | static struct attribute * | |
45e58e77 | 17066 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
17067 | { |
17068 | unsigned int i; | |
17069 | ||
17070 | for (i = 0; i < die->num_attrs; ++i) | |
17071 | if (die->attrs[i].name == name) | |
17072 | return &die->attrs[i]; | |
17073 | ||
17074 | return NULL; | |
17075 | } | |
17076 | ||
05cf31d1 JB |
17077 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
17078 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 17079 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
17080 | |
17081 | static int | |
17082 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
17083 | { | |
17084 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
17085 | ||
17086 | return (attr && DW_UNSND (attr)); | |
17087 | } | |
17088 | ||
3ca72b44 | 17089 | static int |
e142c38c | 17090 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 17091 | { |
05cf31d1 JB |
17092 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
17093 | which value is non-zero. However, we have to be careful with | |
17094 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
17095 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
17096 | end up accidently finding a declaration attribute that belongs | |
17097 | to a different DIE referenced by the specification attribute, | |
17098 | even though the given DIE does not have a declaration attribute. */ | |
17099 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
17100 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
17101 | } |
17102 | ||
63d06c5c | 17103 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 17104 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
17105 | containing the return value on output. If there is no |
17106 | specification, but there is an abstract origin, that is | |
17107 | returned. */ | |
63d06c5c DC |
17108 | |
17109 | static struct die_info * | |
f2f0e013 | 17110 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 17111 | { |
f2f0e013 DJ |
17112 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
17113 | *spec_cu); | |
63d06c5c | 17114 | |
edb3359d DJ |
17115 | if (spec_attr == NULL) |
17116 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
17117 | ||
63d06c5c DC |
17118 | if (spec_attr == NULL) |
17119 | return NULL; | |
17120 | else | |
f2f0e013 | 17121 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 17122 | } |
c906108c | 17123 | |
debd256d | 17124 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
17125 | refers to. |
17126 | NOTE: This is also used as a "cleanup" function. */ | |
17127 | ||
debd256d JB |
17128 | static void |
17129 | free_line_header (struct line_header *lh) | |
17130 | { | |
17131 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 17132 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
17133 | |
17134 | /* Remember that all the lh->file_names[i].name pointers are | |
17135 | pointers into debug_line_buffer, and don't need to be freed. */ | |
17136 | if (lh->file_names) | |
a8bc7b56 | 17137 | xfree (lh->file_names); |
debd256d JB |
17138 | |
17139 | /* Similarly for the include directory names. */ | |
17140 | if (lh->include_dirs) | |
a8bc7b56 | 17141 | xfree (lh->include_dirs); |
debd256d | 17142 | |
a8bc7b56 | 17143 | xfree (lh); |
debd256d JB |
17144 | } |
17145 | ||
527f3840 JK |
17146 | /* Stub for free_line_header to match void * callback types. */ |
17147 | ||
17148 | static void | |
17149 | free_line_header_voidp (void *arg) | |
17150 | { | |
17151 | struct line_header *lh = arg; | |
17152 | ||
17153 | free_line_header (lh); | |
17154 | } | |
17155 | ||
debd256d | 17156 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 17157 | |
debd256d | 17158 | static void |
d521ce57 | 17159 | add_include_dir (struct line_header *lh, const char *include_dir) |
c906108c | 17160 | { |
27e0867f DE |
17161 | if (dwarf_line_debug >= 2) |
17162 | fprintf_unfiltered (gdb_stdlog, "Adding dir %u: %s\n", | |
17163 | lh->num_include_dirs + 1, include_dir); | |
17164 | ||
debd256d JB |
17165 | /* Grow the array if necessary. */ |
17166 | if (lh->include_dirs_size == 0) | |
c5aa993b | 17167 | { |
debd256d JB |
17168 | lh->include_dirs_size = 1; /* for testing */ |
17169 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
17170 | * sizeof (*lh->include_dirs)); | |
17171 | } | |
17172 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
17173 | { | |
17174 | lh->include_dirs_size *= 2; | |
17175 | lh->include_dirs = xrealloc (lh->include_dirs, | |
17176 | (lh->include_dirs_size | |
17177 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 17178 | } |
c906108c | 17179 | |
debd256d JB |
17180 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
17181 | } | |
6e70227d | 17182 | |
debd256d | 17183 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 17184 | |
debd256d JB |
17185 | static void |
17186 | add_file_name (struct line_header *lh, | |
d521ce57 | 17187 | const char *name, |
debd256d JB |
17188 | unsigned int dir_index, |
17189 | unsigned int mod_time, | |
17190 | unsigned int length) | |
17191 | { | |
17192 | struct file_entry *fe; | |
17193 | ||
27e0867f DE |
17194 | if (dwarf_line_debug >= 2) |
17195 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
17196 | lh->num_file_names + 1, name); | |
17197 | ||
debd256d JB |
17198 | /* Grow the array if necessary. */ |
17199 | if (lh->file_names_size == 0) | |
17200 | { | |
17201 | lh->file_names_size = 1; /* for testing */ | |
17202 | lh->file_names = xmalloc (lh->file_names_size | |
17203 | * sizeof (*lh->file_names)); | |
17204 | } | |
17205 | else if (lh->num_file_names >= lh->file_names_size) | |
17206 | { | |
17207 | lh->file_names_size *= 2; | |
17208 | lh->file_names = xrealloc (lh->file_names, | |
17209 | (lh->file_names_size | |
17210 | * sizeof (*lh->file_names))); | |
17211 | } | |
17212 | ||
17213 | fe = &lh->file_names[lh->num_file_names++]; | |
17214 | fe->name = name; | |
17215 | fe->dir_index = dir_index; | |
17216 | fe->mod_time = mod_time; | |
17217 | fe->length = length; | |
aaa75496 | 17218 | fe->included_p = 0; |
cb1df416 | 17219 | fe->symtab = NULL; |
debd256d | 17220 | } |
6e70227d | 17221 | |
83769d0b | 17222 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
17223 | |
17224 | static struct dwarf2_section_info * | |
17225 | get_debug_line_section (struct dwarf2_cu *cu) | |
17226 | { | |
17227 | struct dwarf2_section_info *section; | |
17228 | ||
17229 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
17230 | DWO file. */ | |
17231 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
17232 | section = &cu->dwo_unit->dwo_file->sections.line; | |
17233 | else if (cu->per_cu->is_dwz) | |
17234 | { | |
17235 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
17236 | ||
17237 | section = &dwz->line; | |
17238 | } | |
17239 | else | |
17240 | section = &dwarf2_per_objfile->line; | |
17241 | ||
17242 | return section; | |
17243 | } | |
17244 | ||
debd256d | 17245 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 17246 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 17247 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
17248 | Returns NULL if there is a problem reading the header, e.g., if it |
17249 | has a version we don't understand. | |
debd256d JB |
17250 | |
17251 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
17252 | the returned object point into the dwarf line section buffer, |
17253 | and must not be freed. */ | |
ae2de4f8 | 17254 | |
debd256d | 17255 | static struct line_header * |
3019eac3 | 17256 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
17257 | { |
17258 | struct cleanup *back_to; | |
17259 | struct line_header *lh; | |
d521ce57 | 17260 | const gdb_byte *line_ptr; |
c764a876 | 17261 | unsigned int bytes_read, offset_size; |
debd256d | 17262 | int i; |
d521ce57 | 17263 | const char *cur_dir, *cur_file; |
3019eac3 DE |
17264 | struct dwarf2_section_info *section; |
17265 | bfd *abfd; | |
17266 | ||
36586728 | 17267 | section = get_debug_line_section (cu); |
3019eac3 DE |
17268 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
17269 | if (section->buffer == NULL) | |
debd256d | 17270 | { |
3019eac3 DE |
17271 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
17272 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
17273 | else | |
17274 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
17275 | return 0; |
17276 | } | |
17277 | ||
fceca515 DE |
17278 | /* We can't do this until we know the section is non-empty. |
17279 | Only then do we know we have such a section. */ | |
a32a8923 | 17280 | abfd = get_section_bfd_owner (section); |
fceca515 | 17281 | |
a738430d MK |
17282 | /* Make sure that at least there's room for the total_length field. |
17283 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 17284 | if (offset + 4 >= section->size) |
debd256d | 17285 | { |
4d3c2250 | 17286 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
17287 | return 0; |
17288 | } | |
17289 | ||
17290 | lh = xmalloc (sizeof (*lh)); | |
17291 | memset (lh, 0, sizeof (*lh)); | |
17292 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
17293 | (void *) lh); | |
17294 | ||
527f3840 JK |
17295 | lh->offset.sect_off = offset; |
17296 | lh->offset_in_dwz = cu->per_cu->is_dwz; | |
17297 | ||
3019eac3 | 17298 | line_ptr = section->buffer + offset; |
debd256d | 17299 | |
a738430d | 17300 | /* Read in the header. */ |
6e70227d | 17301 | lh->total_length = |
c764a876 DE |
17302 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
17303 | &bytes_read, &offset_size); | |
debd256d | 17304 | line_ptr += bytes_read; |
3019eac3 | 17305 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 17306 | { |
4d3c2250 | 17307 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
2f324bf6 | 17308 | do_cleanups (back_to); |
debd256d JB |
17309 | return 0; |
17310 | } | |
17311 | lh->statement_program_end = line_ptr + lh->total_length; | |
17312 | lh->version = read_2_bytes (abfd, line_ptr); | |
17313 | line_ptr += 2; | |
cd366ee8 DE |
17314 | if (lh->version > 4) |
17315 | { | |
17316 | /* This is a version we don't understand. The format could have | |
17317 | changed in ways we don't handle properly so just punt. */ | |
17318 | complaint (&symfile_complaints, | |
17319 | _("unsupported version in .debug_line section")); | |
17320 | return NULL; | |
17321 | } | |
c764a876 DE |
17322 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
17323 | line_ptr += offset_size; | |
debd256d JB |
17324 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
17325 | line_ptr += 1; | |
2dc7f7b3 TT |
17326 | if (lh->version >= 4) |
17327 | { | |
17328 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
17329 | line_ptr += 1; | |
17330 | } | |
17331 | else | |
17332 | lh->maximum_ops_per_instruction = 1; | |
17333 | ||
17334 | if (lh->maximum_ops_per_instruction == 0) | |
17335 | { | |
17336 | lh->maximum_ops_per_instruction = 1; | |
17337 | complaint (&symfile_complaints, | |
3e43a32a MS |
17338 | _("invalid maximum_ops_per_instruction " |
17339 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
17340 | } |
17341 | ||
debd256d JB |
17342 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
17343 | line_ptr += 1; | |
17344 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
17345 | line_ptr += 1; | |
17346 | lh->line_range = read_1_byte (abfd, line_ptr); | |
17347 | line_ptr += 1; | |
17348 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
17349 | line_ptr += 1; | |
17350 | lh->standard_opcode_lengths | |
fe1b8b76 | 17351 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
17352 | |
17353 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
17354 | for (i = 1; i < lh->opcode_base; ++i) | |
17355 | { | |
17356 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
17357 | line_ptr += 1; | |
17358 | } | |
17359 | ||
a738430d | 17360 | /* Read directory table. */ |
9b1c24c8 | 17361 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
17362 | { |
17363 | line_ptr += bytes_read; | |
17364 | add_include_dir (lh, cur_dir); | |
17365 | } | |
17366 | line_ptr += bytes_read; | |
17367 | ||
a738430d | 17368 | /* Read file name table. */ |
9b1c24c8 | 17369 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
17370 | { |
17371 | unsigned int dir_index, mod_time, length; | |
17372 | ||
17373 | line_ptr += bytes_read; | |
17374 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17375 | line_ptr += bytes_read; | |
17376 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17377 | line_ptr += bytes_read; | |
17378 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17379 | line_ptr += bytes_read; | |
17380 | ||
17381 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
17382 | } | |
17383 | line_ptr += bytes_read; | |
6e70227d | 17384 | lh->statement_program_start = line_ptr; |
debd256d | 17385 | |
3019eac3 | 17386 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 17387 | complaint (&symfile_complaints, |
3e43a32a MS |
17388 | _("line number info header doesn't " |
17389 | "fit in `.debug_line' section")); | |
debd256d JB |
17390 | |
17391 | discard_cleanups (back_to); | |
17392 | return lh; | |
17393 | } | |
c906108c | 17394 | |
c6da4cef DE |
17395 | /* Subroutine of dwarf_decode_lines to simplify it. |
17396 | Return the file name of the psymtab for included file FILE_INDEX | |
17397 | in line header LH of PST. | |
17398 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17399 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
17400 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
17401 | ||
17402 | The function creates dangling cleanup registration. */ | |
c6da4cef | 17403 | |
d521ce57 | 17404 | static const char * |
c6da4cef DE |
17405 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
17406 | const struct partial_symtab *pst, | |
17407 | const char *comp_dir) | |
17408 | { | |
17409 | const struct file_entry fe = lh->file_names [file_index]; | |
d521ce57 TT |
17410 | const char *include_name = fe.name; |
17411 | const char *include_name_to_compare = include_name; | |
17412 | const char *dir_name = NULL; | |
72b9f47f TT |
17413 | const char *pst_filename; |
17414 | char *copied_name = NULL; | |
c6da4cef DE |
17415 | int file_is_pst; |
17416 | ||
afa6c9ab | 17417 | if (fe.dir_index && lh->include_dirs != NULL) |
c6da4cef DE |
17418 | dir_name = lh->include_dirs[fe.dir_index - 1]; |
17419 | ||
17420 | if (!IS_ABSOLUTE_PATH (include_name) | |
17421 | && (dir_name != NULL || comp_dir != NULL)) | |
17422 | { | |
17423 | /* Avoid creating a duplicate psymtab for PST. | |
17424 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
17425 | Before we do the comparison, however, we need to account | |
17426 | for DIR_NAME and COMP_DIR. | |
17427 | First prepend dir_name (if non-NULL). If we still don't | |
17428 | have an absolute path prepend comp_dir (if non-NULL). | |
17429 | However, the directory we record in the include-file's | |
17430 | psymtab does not contain COMP_DIR (to match the | |
17431 | corresponding symtab(s)). | |
17432 | ||
17433 | Example: | |
17434 | ||
17435 | bash$ cd /tmp | |
17436 | bash$ gcc -g ./hello.c | |
17437 | include_name = "hello.c" | |
17438 | dir_name = "." | |
17439 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
17440 | DW_AT_name = "./hello.c" |
17441 | ||
17442 | */ | |
c6da4cef DE |
17443 | |
17444 | if (dir_name != NULL) | |
17445 | { | |
d521ce57 TT |
17446 | char *tem = concat (dir_name, SLASH_STRING, |
17447 | include_name, (char *)NULL); | |
17448 | ||
17449 | make_cleanup (xfree, tem); | |
17450 | include_name = tem; | |
c6da4cef | 17451 | include_name_to_compare = include_name; |
c6da4cef DE |
17452 | } |
17453 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
17454 | { | |
d521ce57 TT |
17455 | char *tem = concat (comp_dir, SLASH_STRING, |
17456 | include_name, (char *)NULL); | |
17457 | ||
17458 | make_cleanup (xfree, tem); | |
17459 | include_name_to_compare = tem; | |
c6da4cef DE |
17460 | } |
17461 | } | |
17462 | ||
17463 | pst_filename = pst->filename; | |
17464 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
17465 | { | |
72b9f47f TT |
17466 | copied_name = concat (pst->dirname, SLASH_STRING, |
17467 | pst_filename, (char *)NULL); | |
17468 | pst_filename = copied_name; | |
c6da4cef DE |
17469 | } |
17470 | ||
1e3fad37 | 17471 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 17472 | |
72b9f47f TT |
17473 | if (copied_name != NULL) |
17474 | xfree (copied_name); | |
c6da4cef DE |
17475 | |
17476 | if (file_is_pst) | |
17477 | return NULL; | |
17478 | return include_name; | |
17479 | } | |
17480 | ||
d9b3de22 DE |
17481 | /* State machine to track the state of the line number program. */ |
17482 | ||
17483 | typedef struct | |
17484 | { | |
17485 | /* These are part of the standard DWARF line number state machine. */ | |
17486 | ||
17487 | unsigned char op_index; | |
17488 | unsigned int file; | |
17489 | unsigned int line; | |
17490 | CORE_ADDR address; | |
17491 | int is_stmt; | |
17492 | unsigned int discriminator; | |
17493 | ||
17494 | /* Additional bits of state we need to track. */ | |
17495 | ||
17496 | /* The last file that we called dwarf2_start_subfile for. | |
17497 | This is only used for TLLs. */ | |
17498 | unsigned int last_file; | |
17499 | /* The last file a line number was recorded for. */ | |
17500 | struct subfile *last_subfile; | |
17501 | ||
17502 | /* The function to call to record a line. */ | |
17503 | record_line_ftype *record_line; | |
17504 | ||
17505 | /* The last line number that was recorded, used to coalesce | |
17506 | consecutive entries for the same line. This can happen, for | |
17507 | example, when discriminators are present. PR 17276. */ | |
17508 | unsigned int last_line; | |
17509 | int line_has_non_zero_discriminator; | |
17510 | } lnp_state_machine; | |
17511 | ||
17512 | /* There's a lot of static state to pass to dwarf_record_line. | |
17513 | This keeps it all together. */ | |
17514 | ||
17515 | typedef struct | |
17516 | { | |
17517 | /* The gdbarch. */ | |
17518 | struct gdbarch *gdbarch; | |
17519 | ||
17520 | /* The line number header. */ | |
17521 | struct line_header *line_header; | |
17522 | ||
17523 | /* Non-zero if we're recording lines. | |
17524 | Otherwise we're building partial symtabs and are just interested in | |
17525 | finding include files mentioned by the line number program. */ | |
17526 | int record_lines_p; | |
17527 | } lnp_reader_state; | |
17528 | ||
c91513d8 PP |
17529 | /* Ignore this record_line request. */ |
17530 | ||
17531 | static void | |
17532 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
17533 | { | |
17534 | return; | |
17535 | } | |
17536 | ||
a05a36a5 DE |
17537 | /* Return non-zero if we should add LINE to the line number table. |
17538 | LINE is the line to add, LAST_LINE is the last line that was added, | |
17539 | LAST_SUBFILE is the subfile for LAST_LINE. | |
17540 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
17541 | had a non-zero discriminator. | |
17542 | ||
17543 | We have to be careful in the presence of discriminators. | |
17544 | E.g., for this line: | |
17545 | ||
17546 | for (i = 0; i < 100000; i++); | |
17547 | ||
17548 | clang can emit four line number entries for that one line, | |
17549 | each with a different discriminator. | |
17550 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
17551 | ||
17552 | However, we want gdb to coalesce all four entries into one. | |
17553 | Otherwise the user could stepi into the middle of the line and | |
17554 | gdb would get confused about whether the pc really was in the | |
17555 | middle of the line. | |
17556 | ||
17557 | Things are further complicated by the fact that two consecutive | |
17558 | line number entries for the same line is a heuristic used by gcc | |
17559 | to denote the end of the prologue. So we can't just discard duplicate | |
17560 | entries, we have to be selective about it. The heuristic we use is | |
17561 | that we only collapse consecutive entries for the same line if at least | |
17562 | one of those entries has a non-zero discriminator. PR 17276. | |
17563 | ||
17564 | Note: Addresses in the line number state machine can never go backwards | |
17565 | within one sequence, thus this coalescing is ok. */ | |
17566 | ||
17567 | static int | |
17568 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
17569 | int line_has_non_zero_discriminator, | |
17570 | struct subfile *last_subfile) | |
17571 | { | |
17572 | if (current_subfile != last_subfile) | |
17573 | return 1; | |
17574 | if (line != last_line) | |
17575 | return 1; | |
17576 | /* Same line for the same file that we've seen already. | |
17577 | As a last check, for pr 17276, only record the line if the line | |
17578 | has never had a non-zero discriminator. */ | |
17579 | if (!line_has_non_zero_discriminator) | |
17580 | return 1; | |
17581 | return 0; | |
17582 | } | |
17583 | ||
252a6764 DE |
17584 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
17585 | in the line table of subfile SUBFILE. */ | |
17586 | ||
17587 | static void | |
d9b3de22 DE |
17588 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
17589 | unsigned int line, CORE_ADDR address, | |
17590 | record_line_ftype p_record_line) | |
252a6764 DE |
17591 | { |
17592 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
17593 | ||
27e0867f DE |
17594 | if (dwarf_line_debug) |
17595 | { | |
17596 | fprintf_unfiltered (gdb_stdlog, | |
17597 | "Recording line %u, file %s, address %s\n", | |
17598 | line, lbasename (subfile->name), | |
17599 | paddress (gdbarch, address)); | |
17600 | } | |
17601 | ||
d5962de5 | 17602 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
17603 | } |
17604 | ||
17605 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
17606 | Mark the end of a set of line number records. | |
d9b3de22 | 17607 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
17608 | If SUBFILE is NULL the request is ignored. */ |
17609 | ||
17610 | static void | |
17611 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
17612 | CORE_ADDR address, record_line_ftype p_record_line) | |
17613 | { | |
27e0867f DE |
17614 | if (subfile == NULL) |
17615 | return; | |
17616 | ||
17617 | if (dwarf_line_debug) | |
17618 | { | |
17619 | fprintf_unfiltered (gdb_stdlog, | |
17620 | "Finishing current line, file %s, address %s\n", | |
17621 | lbasename (subfile->name), | |
17622 | paddress (gdbarch, address)); | |
17623 | } | |
17624 | ||
d9b3de22 DE |
17625 | dwarf_record_line_1 (gdbarch, subfile, 0, address, p_record_line); |
17626 | } | |
17627 | ||
17628 | /* Record the line in STATE. | |
17629 | END_SEQUENCE is non-zero if we're processing the end of a sequence. */ | |
17630 | ||
17631 | static void | |
17632 | dwarf_record_line (lnp_reader_state *reader, lnp_state_machine *state, | |
17633 | int end_sequence) | |
17634 | { | |
17635 | const struct line_header *lh = reader->line_header; | |
17636 | unsigned int file, line, discriminator; | |
17637 | int is_stmt; | |
17638 | ||
17639 | file = state->file; | |
17640 | line = state->line; | |
17641 | is_stmt = state->is_stmt; | |
17642 | discriminator = state->discriminator; | |
17643 | ||
17644 | if (dwarf_line_debug) | |
17645 | { | |
17646 | fprintf_unfiltered (gdb_stdlog, | |
17647 | "Processing actual line %u: file %u," | |
17648 | " address %s, is_stmt %u, discrim %u\n", | |
17649 | line, file, | |
17650 | paddress (reader->gdbarch, state->address), | |
17651 | is_stmt, discriminator); | |
17652 | } | |
17653 | ||
17654 | if (file == 0 || file - 1 >= lh->num_file_names) | |
17655 | dwarf2_debug_line_missing_file_complaint (); | |
17656 | /* For now we ignore lines not starting on an instruction boundary. | |
17657 | But not when processing end_sequence for compatibility with the | |
17658 | previous version of the code. */ | |
17659 | else if (state->op_index == 0 || end_sequence) | |
17660 | { | |
17661 | lh->file_names[file - 1].included_p = 1; | |
17662 | if (reader->record_lines_p && is_stmt) | |
17663 | { | |
e815d2d2 | 17664 | if (state->last_subfile != current_subfile || end_sequence) |
d9b3de22 DE |
17665 | { |
17666 | dwarf_finish_line (reader->gdbarch, state->last_subfile, | |
17667 | state->address, state->record_line); | |
17668 | } | |
17669 | ||
17670 | if (!end_sequence) | |
17671 | { | |
17672 | if (dwarf_record_line_p (line, state->last_line, | |
17673 | state->line_has_non_zero_discriminator, | |
17674 | state->last_subfile)) | |
17675 | { | |
17676 | dwarf_record_line_1 (reader->gdbarch, current_subfile, | |
17677 | line, state->address, | |
17678 | state->record_line); | |
17679 | } | |
17680 | state->last_subfile = current_subfile; | |
17681 | state->last_line = line; | |
17682 | } | |
17683 | } | |
17684 | } | |
17685 | } | |
17686 | ||
17687 | /* Initialize STATE for the start of a line number program. */ | |
17688 | ||
17689 | static void | |
17690 | init_lnp_state_machine (lnp_state_machine *state, | |
17691 | const lnp_reader_state *reader) | |
17692 | { | |
17693 | memset (state, 0, sizeof (*state)); | |
17694 | ||
17695 | /* Just starting, there is no "last file". */ | |
17696 | state->last_file = 0; | |
17697 | state->last_subfile = NULL; | |
17698 | ||
17699 | state->record_line = record_line; | |
17700 | ||
17701 | state->last_line = 0; | |
17702 | state->line_has_non_zero_discriminator = 0; | |
17703 | ||
17704 | /* Initialize these according to the DWARF spec. */ | |
17705 | state->op_index = 0; | |
17706 | state->file = 1; | |
17707 | state->line = 1; | |
17708 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there | |
17709 | was a line entry for it so that the backend has a chance to adjust it | |
17710 | and also record it in case it needs it. This is currently used by MIPS | |
17711 | code, cf. `mips_adjust_dwarf2_line'. */ | |
17712 | state->address = gdbarch_adjust_dwarf2_line (reader->gdbarch, 0, 0); | |
17713 | state->is_stmt = reader->line_header->default_is_stmt; | |
17714 | state->discriminator = 0; | |
252a6764 DE |
17715 | } |
17716 | ||
924c2928 DE |
17717 | /* Check address and if invalid nop-out the rest of the lines in this |
17718 | sequence. */ | |
17719 | ||
17720 | static void | |
d9b3de22 | 17721 | check_line_address (struct dwarf2_cu *cu, lnp_state_machine *state, |
924c2928 DE |
17722 | const gdb_byte *line_ptr, |
17723 | CORE_ADDR lowpc, CORE_ADDR address) | |
17724 | { | |
17725 | /* If address < lowpc then it's not a usable value, it's outside the | |
17726 | pc range of the CU. However, we restrict the test to only address | |
17727 | values of zero to preserve GDB's previous behaviour which is to | |
17728 | handle the specific case of a function being GC'd by the linker. */ | |
17729 | ||
17730 | if (address == 0 && address < lowpc) | |
17731 | { | |
17732 | /* This line table is for a function which has been | |
17733 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
17734 | ||
17735 | struct objfile *objfile = cu->objfile; | |
17736 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; | |
17737 | ||
17738 | complaint (&symfile_complaints, | |
17739 | _(".debug_line address at offset 0x%lx is 0 [in module %s]"), | |
17740 | line_offset, objfile_name (objfile)); | |
d9b3de22 DE |
17741 | state->record_line = noop_record_line; |
17742 | /* Note: sm.record_line is left as noop_record_line | |
924c2928 DE |
17743 | until we see DW_LNE_end_sequence. */ |
17744 | } | |
17745 | } | |
17746 | ||
f3f5162e | 17747 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
17748 | Process the line number information in LH. |
17749 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
17750 | program in order to set included_p for every referenced header. */ | |
debd256d | 17751 | |
c906108c | 17752 | static void |
43f3e411 DE |
17753 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
17754 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 17755 | { |
d521ce57 TT |
17756 | const gdb_byte *line_ptr, *extended_end; |
17757 | const gdb_byte *line_end; | |
a8c50c1f | 17758 | unsigned int bytes_read, extended_len; |
699ca60a | 17759 | unsigned char op_code, extended_op; |
e142c38c DJ |
17760 | CORE_ADDR baseaddr; |
17761 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 17762 | bfd *abfd = objfile->obfd; |
fbf65064 | 17763 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
d9b3de22 DE |
17764 | /* Non-zero if we're recording line info (as opposed to building partial |
17765 | symtabs). */ | |
17766 | int record_lines_p = !decode_for_pst_p; | |
17767 | /* A collection of things we need to pass to dwarf_record_line. */ | |
17768 | lnp_reader_state reader_state; | |
e142c38c DJ |
17769 | |
17770 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 17771 | |
debd256d JB |
17772 | line_ptr = lh->statement_program_start; |
17773 | line_end = lh->statement_program_end; | |
c906108c | 17774 | |
d9b3de22 DE |
17775 | reader_state.gdbarch = gdbarch; |
17776 | reader_state.line_header = lh; | |
17777 | reader_state.record_lines_p = record_lines_p; | |
17778 | ||
c906108c SS |
17779 | /* Read the statement sequences until there's nothing left. */ |
17780 | while (line_ptr < line_end) | |
17781 | { | |
d9b3de22 DE |
17782 | /* The DWARF line number program state machine. */ |
17783 | lnp_state_machine state_machine; | |
c906108c | 17784 | int end_sequence = 0; |
d9b3de22 DE |
17785 | |
17786 | /* Reset the state machine at the start of each sequence. */ | |
17787 | init_lnp_state_machine (&state_machine, &reader_state); | |
17788 | ||
17789 | if (record_lines_p && lh->num_file_names >= state_machine.file) | |
c906108c | 17790 | { |
aaa75496 | 17791 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
17792 | /* lh->include_dirs and lh->file_names are 0-based, but the |
17793 | directory and file name numbers in the statement program | |
17794 | are 1-based. */ | |
d9b3de22 | 17795 | struct file_entry *fe = &lh->file_names[state_machine.file - 1]; |
d521ce57 | 17796 | const char *dir = NULL; |
a738430d | 17797 | |
afa6c9ab | 17798 | if (fe->dir_index && lh->include_dirs != NULL) |
debd256d | 17799 | dir = lh->include_dirs[fe->dir_index - 1]; |
4f1520fb | 17800 | |
4d663531 | 17801 | dwarf2_start_subfile (fe->name, dir); |
c906108c SS |
17802 | } |
17803 | ||
a738430d | 17804 | /* Decode the table. */ |
d9b3de22 | 17805 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
17806 | { |
17807 | op_code = read_1_byte (abfd, line_ptr); | |
17808 | line_ptr += 1; | |
9aa1fe7e | 17809 | |
debd256d | 17810 | if (op_code >= lh->opcode_base) |
6e70227d | 17811 | { |
8e07a239 | 17812 | /* Special opcode. */ |
699ca60a | 17813 | unsigned char adj_opcode; |
3e29f34a | 17814 | CORE_ADDR addr_adj; |
a05a36a5 | 17815 | int line_delta; |
8e07a239 | 17816 | |
debd256d | 17817 | adj_opcode = op_code - lh->opcode_base; |
d9b3de22 DE |
17818 | addr_adj = (((state_machine.op_index |
17819 | + (adj_opcode / lh->line_range)) | |
2dc7f7b3 TT |
17820 | / lh->maximum_ops_per_instruction) |
17821 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
17822 | state_machine.address |
17823 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
17824 | state_machine.op_index = ((state_machine.op_index | |
17825 | + (adj_opcode / lh->line_range)) | |
17826 | % lh->maximum_ops_per_instruction); | |
a05a36a5 | 17827 | line_delta = lh->line_base + (adj_opcode % lh->line_range); |
d9b3de22 | 17828 | state_machine.line += line_delta; |
a05a36a5 | 17829 | if (line_delta != 0) |
d9b3de22 DE |
17830 | state_machine.line_has_non_zero_discriminator |
17831 | = state_machine.discriminator != 0; | |
17832 | ||
17833 | dwarf_record_line (&reader_state, &state_machine, 0); | |
17834 | state_machine.discriminator = 0; | |
9aa1fe7e GK |
17835 | } |
17836 | else switch (op_code) | |
c906108c SS |
17837 | { |
17838 | case DW_LNS_extended_op: | |
3e43a32a MS |
17839 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
17840 | &bytes_read); | |
473b7be6 | 17841 | line_ptr += bytes_read; |
a8c50c1f | 17842 | extended_end = line_ptr + extended_len; |
c906108c SS |
17843 | extended_op = read_1_byte (abfd, line_ptr); |
17844 | line_ptr += 1; | |
17845 | switch (extended_op) | |
17846 | { | |
17847 | case DW_LNE_end_sequence: | |
d9b3de22 | 17848 | state_machine.record_line = record_line; |
c906108c | 17849 | end_sequence = 1; |
c906108c SS |
17850 | break; |
17851 | case DW_LNE_set_address: | |
d9b3de22 DE |
17852 | { |
17853 | CORE_ADDR address | |
17854 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
17855 | ||
17856 | line_ptr += bytes_read; | |
17857 | check_line_address (cu, &state_machine, line_ptr, | |
17858 | lowpc, address); | |
17859 | state_machine.op_index = 0; | |
17860 | address += baseaddr; | |
17861 | state_machine.address | |
17862 | = gdbarch_adjust_dwarf2_line (gdbarch, address, 0); | |
17863 | } | |
c906108c SS |
17864 | break; |
17865 | case DW_LNE_define_file: | |
debd256d | 17866 | { |
d521ce57 | 17867 | const char *cur_file; |
debd256d | 17868 | unsigned int dir_index, mod_time, length; |
6e70227d | 17869 | |
3e43a32a MS |
17870 | cur_file = read_direct_string (abfd, line_ptr, |
17871 | &bytes_read); | |
debd256d JB |
17872 | line_ptr += bytes_read; |
17873 | dir_index = | |
17874 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17875 | line_ptr += bytes_read; | |
17876 | mod_time = | |
17877 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17878 | line_ptr += bytes_read; | |
17879 | length = | |
17880 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17881 | line_ptr += bytes_read; | |
17882 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
17883 | } | |
c906108c | 17884 | break; |
d0c6ba3d CC |
17885 | case DW_LNE_set_discriminator: |
17886 | /* The discriminator is not interesting to the debugger; | |
a05a36a5 DE |
17887 | just ignore it. We still need to check its value though: |
17888 | if there are consecutive entries for the same | |
17889 | (non-prologue) line we want to coalesce them. | |
17890 | PR 17276. */ | |
d9b3de22 DE |
17891 | state_machine.discriminator |
17892 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17893 | state_machine.line_has_non_zero_discriminator | |
17894 | |= state_machine.discriminator != 0; | |
a05a36a5 | 17895 | line_ptr += bytes_read; |
d0c6ba3d | 17896 | break; |
c906108c | 17897 | default: |
4d3c2250 | 17898 | complaint (&symfile_complaints, |
e2e0b3e5 | 17899 | _("mangled .debug_line section")); |
debd256d | 17900 | return; |
c906108c | 17901 | } |
a8c50c1f DJ |
17902 | /* Make sure that we parsed the extended op correctly. If e.g. |
17903 | we expected a different address size than the producer used, | |
17904 | we may have read the wrong number of bytes. */ | |
17905 | if (line_ptr != extended_end) | |
17906 | { | |
17907 | complaint (&symfile_complaints, | |
17908 | _("mangled .debug_line section")); | |
17909 | return; | |
17910 | } | |
c906108c SS |
17911 | break; |
17912 | case DW_LNS_copy: | |
d9b3de22 DE |
17913 | dwarf_record_line (&reader_state, &state_machine, 0); |
17914 | state_machine.discriminator = 0; | |
c906108c SS |
17915 | break; |
17916 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
17917 | { |
17918 | CORE_ADDR adjust | |
17919 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
3e29f34a | 17920 | CORE_ADDR addr_adj; |
2dc7f7b3 | 17921 | |
d9b3de22 | 17922 | addr_adj = (((state_machine.op_index + adjust) |
2dc7f7b3 TT |
17923 | / lh->maximum_ops_per_instruction) |
17924 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
17925 | state_machine.address |
17926 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
17927 | state_machine.op_index = ((state_machine.op_index + adjust) | |
17928 | % lh->maximum_ops_per_instruction); | |
2dc7f7b3 TT |
17929 | line_ptr += bytes_read; |
17930 | } | |
c906108c SS |
17931 | break; |
17932 | case DW_LNS_advance_line: | |
a05a36a5 DE |
17933 | { |
17934 | int line_delta | |
17935 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
17936 | ||
d9b3de22 | 17937 | state_machine.line += line_delta; |
a05a36a5 | 17938 | if (line_delta != 0) |
d9b3de22 DE |
17939 | state_machine.line_has_non_zero_discriminator |
17940 | = state_machine.discriminator != 0; | |
a05a36a5 DE |
17941 | line_ptr += bytes_read; |
17942 | } | |
c906108c SS |
17943 | break; |
17944 | case DW_LNS_set_file: | |
d9b3de22 DE |
17945 | { |
17946 | /* The arrays lh->include_dirs and lh->file_names are | |
17947 | 0-based, but the directory and file name numbers in | |
17948 | the statement program are 1-based. */ | |
17949 | struct file_entry *fe; | |
17950 | const char *dir = NULL; | |
17951 | ||
17952 | state_machine.file = read_unsigned_leb128 (abfd, line_ptr, | |
17953 | &bytes_read); | |
17954 | line_ptr += bytes_read; | |
17955 | if (state_machine.file == 0 | |
17956 | || state_machine.file - 1 >= lh->num_file_names) | |
17957 | dwarf2_debug_line_missing_file_complaint (); | |
17958 | else | |
17959 | { | |
17960 | fe = &lh->file_names[state_machine.file - 1]; | |
17961 | if (fe->dir_index && lh->include_dirs != NULL) | |
17962 | dir = lh->include_dirs[fe->dir_index - 1]; | |
17963 | if (record_lines_p) | |
17964 | { | |
17965 | state_machine.last_subfile = current_subfile; | |
17966 | state_machine.line_has_non_zero_discriminator | |
17967 | = state_machine.discriminator != 0; | |
17968 | dwarf2_start_subfile (fe->name, dir); | |
17969 | } | |
17970 | } | |
17971 | } | |
c906108c SS |
17972 | break; |
17973 | case DW_LNS_set_column: | |
0ad93d4f | 17974 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
17975 | line_ptr += bytes_read; |
17976 | break; | |
17977 | case DW_LNS_negate_stmt: | |
d9b3de22 | 17978 | state_machine.is_stmt = (!state_machine.is_stmt); |
c906108c SS |
17979 | break; |
17980 | case DW_LNS_set_basic_block: | |
c906108c | 17981 | break; |
c2c6d25f JM |
17982 | /* Add to the address register of the state machine the |
17983 | address increment value corresponding to special opcode | |
a738430d MK |
17984 | 255. I.e., this value is scaled by the minimum |
17985 | instruction length since special opcode 255 would have | |
b021a221 | 17986 | scaled the increment. */ |
c906108c | 17987 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
17988 | { |
17989 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
3e29f34a | 17990 | CORE_ADDR addr_adj; |
2dc7f7b3 | 17991 | |
d9b3de22 | 17992 | addr_adj = (((state_machine.op_index + adjust) |
2dc7f7b3 TT |
17993 | / lh->maximum_ops_per_instruction) |
17994 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
17995 | state_machine.address |
17996 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
17997 | state_machine.op_index = ((state_machine.op_index + adjust) | |
17998 | % lh->maximum_ops_per_instruction); | |
2dc7f7b3 | 17999 | } |
c906108c SS |
18000 | break; |
18001 | case DW_LNS_fixed_advance_pc: | |
3e29f34a MR |
18002 | { |
18003 | CORE_ADDR addr_adj; | |
18004 | ||
18005 | addr_adj = read_2_bytes (abfd, line_ptr); | |
d9b3de22 DE |
18006 | state_machine.address |
18007 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
18008 | state_machine.op_index = 0; | |
3e29f34a MR |
18009 | line_ptr += 2; |
18010 | } | |
c906108c | 18011 | break; |
9aa1fe7e | 18012 | default: |
a738430d MK |
18013 | { |
18014 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 18015 | int i; |
a738430d | 18016 | |
debd256d | 18017 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
18018 | { |
18019 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18020 | line_ptr += bytes_read; | |
18021 | } | |
18022 | } | |
c906108c SS |
18023 | } |
18024 | } | |
d9b3de22 DE |
18025 | |
18026 | if (!end_sequence) | |
18027 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
18028 | ||
18029 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
18030 | in which case we still finish recording the last line). */ | |
18031 | dwarf_record_line (&reader_state, &state_machine, 1); | |
c906108c | 18032 | } |
f3f5162e DE |
18033 | } |
18034 | ||
18035 | /* Decode the Line Number Program (LNP) for the given line_header | |
18036 | structure and CU. The actual information extracted and the type | |
18037 | of structures created from the LNP depends on the value of PST. | |
18038 | ||
18039 | 1. If PST is NULL, then this procedure uses the data from the program | |
18040 | to create all necessary symbol tables, and their linetables. | |
18041 | ||
18042 | 2. If PST is not NULL, this procedure reads the program to determine | |
18043 | the list of files included by the unit represented by PST, and | |
18044 | builds all the associated partial symbol tables. | |
18045 | ||
18046 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
18047 | It is used for relative paths in the line table. | |
18048 | NOTE: When processing partial symtabs (pst != NULL), | |
18049 | comp_dir == pst->dirname. | |
18050 | ||
18051 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
18052 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
18053 | symtab we don't use it in the name of the psymtabs we create. | |
18054 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
18055 | A good testcase for this is mb-inline.exp. |
18056 | ||
527f3840 JK |
18057 | LOWPC is the lowest address in CU (or 0 if not known). |
18058 | ||
18059 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
18060 | for its PC<->lines mapping information. Otherwise only the filename | |
18061 | table is read in. */ | |
f3f5162e DE |
18062 | |
18063 | static void | |
18064 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 18065 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 18066 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e DE |
18067 | { |
18068 | struct objfile *objfile = cu->objfile; | |
18069 | const int decode_for_pst_p = (pst != NULL); | |
f3f5162e | 18070 | |
527f3840 JK |
18071 | if (decode_mapping) |
18072 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
18073 | |
18074 | if (decode_for_pst_p) | |
18075 | { | |
18076 | int file_index; | |
18077 | ||
18078 | /* Now that we're done scanning the Line Header Program, we can | |
18079 | create the psymtab of each included file. */ | |
18080 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
18081 | if (lh->file_names[file_index].included_p == 1) | |
18082 | { | |
d521ce57 | 18083 | const char *include_name = |
c6da4cef DE |
18084 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
18085 | if (include_name != NULL) | |
aaa75496 JB |
18086 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
18087 | } | |
18088 | } | |
cb1df416 DJ |
18089 | else |
18090 | { | |
18091 | /* Make sure a symtab is created for every file, even files | |
18092 | which contain only variables (i.e. no code with associated | |
18093 | line numbers). */ | |
43f3e411 | 18094 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 18095 | int i; |
cb1df416 DJ |
18096 | |
18097 | for (i = 0; i < lh->num_file_names; i++) | |
18098 | { | |
d521ce57 | 18099 | const char *dir = NULL; |
f3f5162e | 18100 | struct file_entry *fe; |
9a619af0 | 18101 | |
cb1df416 | 18102 | fe = &lh->file_names[i]; |
afa6c9ab | 18103 | if (fe->dir_index && lh->include_dirs != NULL) |
cb1df416 | 18104 | dir = lh->include_dirs[fe->dir_index - 1]; |
4d663531 | 18105 | dwarf2_start_subfile (fe->name, dir); |
cb1df416 | 18106 | |
cb1df416 | 18107 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
18108 | { |
18109 | current_subfile->symtab | |
18110 | = allocate_symtab (cust, current_subfile->name); | |
18111 | } | |
cb1df416 DJ |
18112 | fe->symtab = current_subfile->symtab; |
18113 | } | |
18114 | } | |
c906108c SS |
18115 | } |
18116 | ||
18117 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
18118 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 18119 | or NULL if not known. |
c906108c SS |
18120 | This routine tries to keep line numbers from identical absolute and |
18121 | relative file names in a common subfile. | |
18122 | ||
18123 | Using the `list' example from the GDB testsuite, which resides in | |
18124 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
18125 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
18126 | ||
c5aa993b | 18127 | DW_AT_name: /srcdir/list0.c |
4d663531 | 18128 | DW_AT_comp_dir: /compdir |
357e46e7 | 18129 | files.files[0].name: list0.h |
c5aa993b | 18130 | files.files[0].dir: /srcdir |
357e46e7 | 18131 | files.files[1].name: list0.c |
c5aa993b | 18132 | files.files[1].dir: /srcdir |
c906108c SS |
18133 | |
18134 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
18135 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
18136 | start_subfile will ensure that this happens provided that we pass the | |
18137 | concatenation of files.files[1].dir and files.files[1].name as the | |
18138 | subfile's name. */ | |
c906108c SS |
18139 | |
18140 | static void | |
4d663531 | 18141 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 18142 | { |
d521ce57 | 18143 | char *copy = NULL; |
4f1520fb | 18144 | |
4d663531 | 18145 | /* In order not to lose the line information directory, |
4f1520fb FR |
18146 | we concatenate it to the filename when it makes sense. |
18147 | Note that the Dwarf3 standard says (speaking of filenames in line | |
18148 | information): ``The directory index is ignored for file names | |
18149 | that represent full path names''. Thus ignoring dirname in the | |
18150 | `else' branch below isn't an issue. */ | |
c906108c | 18151 | |
d5166ae1 | 18152 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
18153 | { |
18154 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
18155 | filename = copy; | |
18156 | } | |
c906108c | 18157 | |
4d663531 | 18158 | start_subfile (filename); |
4f1520fb | 18159 | |
d521ce57 TT |
18160 | if (copy != NULL) |
18161 | xfree (copy); | |
c906108c SS |
18162 | } |
18163 | ||
f4dc4d17 DE |
18164 | /* Start a symtab for DWARF. |
18165 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
18166 | ||
43f3e411 | 18167 | static struct compunit_symtab * |
f4dc4d17 | 18168 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 18169 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 18170 | { |
43f3e411 DE |
18171 | struct compunit_symtab *cust |
18172 | = start_symtab (cu->objfile, name, comp_dir, low_pc); | |
18173 | ||
f4dc4d17 DE |
18174 | record_debugformat ("DWARF 2"); |
18175 | record_producer (cu->producer); | |
18176 | ||
18177 | /* We assume that we're processing GCC output. */ | |
18178 | processing_gcc_compilation = 2; | |
18179 | ||
4d4ec4e5 | 18180 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
18181 | |
18182 | return cust; | |
f4dc4d17 DE |
18183 | } |
18184 | ||
4c2df51b DJ |
18185 | static void |
18186 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 18187 | struct dwarf2_cu *cu) |
4c2df51b | 18188 | { |
e7c27a73 DJ |
18189 | struct objfile *objfile = cu->objfile; |
18190 | struct comp_unit_head *cu_header = &cu->header; | |
18191 | ||
4c2df51b DJ |
18192 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
18193 | code here to turn a symbol with DW_AT_external and a | |
18194 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
18195 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
18196 | with some versions of binutils) where shared libraries could have | |
18197 | relocations against symbols in their debug information - the | |
18198 | minimal symbol would have the right address, but the debug info | |
18199 | would not. It's no longer necessary, because we will explicitly | |
18200 | apply relocations when we read in the debug information now. */ | |
18201 | ||
18202 | /* A DW_AT_location attribute with no contents indicates that a | |
18203 | variable has been optimized away. */ | |
18204 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
18205 | { | |
f1e6e072 | 18206 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
18207 | return; |
18208 | } | |
18209 | ||
18210 | /* Handle one degenerate form of location expression specially, to | |
18211 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
18212 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
18213 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
18214 | |
18215 | if (attr_form_is_block (attr) | |
3019eac3 DE |
18216 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
18217 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
18218 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
18219 | && (DW_BLOCK (attr)->size | |
18220 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 18221 | { |
891d2f0b | 18222 | unsigned int dummy; |
4c2df51b | 18223 | |
3019eac3 DE |
18224 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
18225 | SYMBOL_VALUE_ADDRESS (sym) = | |
18226 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
18227 | else | |
18228 | SYMBOL_VALUE_ADDRESS (sym) = | |
18229 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 18230 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
18231 | fixup_symbol_section (sym, objfile); |
18232 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
18233 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
18234 | return; |
18235 | } | |
18236 | ||
18237 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
18238 | expression evaluator, and use LOC_COMPUTED only when necessary | |
18239 | (i.e. when the value of a register or memory location is | |
18240 | referenced, or a thread-local block, etc.). Then again, it might | |
18241 | not be worthwhile. I'm assuming that it isn't unless performance | |
18242 | or memory numbers show me otherwise. */ | |
18243 | ||
f1e6e072 | 18244 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 18245 | |
f1e6e072 | 18246 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 18247 | cu->has_loclist = 1; |
4c2df51b DJ |
18248 | } |
18249 | ||
c906108c SS |
18250 | /* Given a pointer to a DWARF information entry, figure out if we need |
18251 | to make a symbol table entry for it, and if so, create a new entry | |
18252 | and return a pointer to it. | |
18253 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
18254 | used the passed type. |
18255 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
18256 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
18257 | |
18258 | static struct symbol * | |
34eaf542 TT |
18259 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
18260 | struct symbol *space) | |
c906108c | 18261 | { |
e7c27a73 | 18262 | struct objfile *objfile = cu->objfile; |
3e29f34a | 18263 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 18264 | struct symbol *sym = NULL; |
15d034d0 | 18265 | const char *name; |
c906108c SS |
18266 | struct attribute *attr = NULL; |
18267 | struct attribute *attr2 = NULL; | |
e142c38c | 18268 | CORE_ADDR baseaddr; |
e37fd15a SW |
18269 | struct pending **list_to_add = NULL; |
18270 | ||
edb3359d | 18271 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
18272 | |
18273 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 18274 | |
94af9270 | 18275 | name = dwarf2_name (die, cu); |
c906108c SS |
18276 | if (name) |
18277 | { | |
94af9270 | 18278 | const char *linkagename; |
34eaf542 | 18279 | int suppress_add = 0; |
94af9270 | 18280 | |
34eaf542 TT |
18281 | if (space) |
18282 | sym = space; | |
18283 | else | |
e623cf5d | 18284 | sym = allocate_symbol (objfile); |
c906108c | 18285 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
18286 | |
18287 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 18288 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
18289 | linkagename = dwarf2_physname (name, die, cu); |
18290 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 18291 | |
f55ee35c JK |
18292 | /* Fortran does not have mangling standard and the mangling does differ |
18293 | between gfortran, iFort etc. */ | |
18294 | if (cu->language == language_fortran | |
b250c185 | 18295 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 18296 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 18297 | dwarf2_full_name (name, die, cu), |
29df156d | 18298 | NULL); |
f55ee35c | 18299 | |
c906108c | 18300 | /* Default assumptions. |
c5aa993b | 18301 | Use the passed type or decode it from the die. */ |
176620f1 | 18302 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 18303 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
18304 | if (type != NULL) |
18305 | SYMBOL_TYPE (sym) = type; | |
18306 | else | |
e7c27a73 | 18307 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
18308 | attr = dwarf2_attr (die, |
18309 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
18310 | cu); | |
c906108c SS |
18311 | if (attr) |
18312 | { | |
18313 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
18314 | } | |
cb1df416 | 18315 | |
edb3359d DJ |
18316 | attr = dwarf2_attr (die, |
18317 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
18318 | cu); | |
cb1df416 DJ |
18319 | if (attr) |
18320 | { | |
18321 | int file_index = DW_UNSND (attr); | |
9a619af0 | 18322 | |
cb1df416 DJ |
18323 | if (cu->line_header == NULL |
18324 | || file_index > cu->line_header->num_file_names) | |
18325 | complaint (&symfile_complaints, | |
18326 | _("file index out of range")); | |
1c3d648d | 18327 | else if (file_index > 0) |
cb1df416 DJ |
18328 | { |
18329 | struct file_entry *fe; | |
9a619af0 | 18330 | |
cb1df416 | 18331 | fe = &cu->line_header->file_names[file_index - 1]; |
08be3fe3 | 18332 | symbol_set_symtab (sym, fe->symtab); |
cb1df416 DJ |
18333 | } |
18334 | } | |
18335 | ||
c906108c SS |
18336 | switch (die->tag) |
18337 | { | |
18338 | case DW_TAG_label: | |
e142c38c | 18339 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 18340 | if (attr) |
3e29f34a MR |
18341 | { |
18342 | CORE_ADDR addr; | |
18343 | ||
18344 | addr = attr_value_as_address (attr); | |
18345 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
18346 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
18347 | } | |
0f5238ed TT |
18348 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
18349 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 18350 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 18351 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
18352 | break; |
18353 | case DW_TAG_subprogram: | |
18354 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18355 | finish_block. */ | |
f1e6e072 | 18356 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 18357 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
18358 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
18359 | || cu->language == language_ada) | |
c906108c | 18360 | { |
2cfa0c8d JB |
18361 | /* Subprograms marked external are stored as a global symbol. |
18362 | Ada subprograms, whether marked external or not, are always | |
18363 | stored as a global symbol, because we want to be able to | |
18364 | access them globally. For instance, we want to be able | |
18365 | to break on a nested subprogram without having to | |
18366 | specify the context. */ | |
e37fd15a | 18367 | list_to_add = &global_symbols; |
c906108c SS |
18368 | } |
18369 | else | |
18370 | { | |
e37fd15a | 18371 | list_to_add = cu->list_in_scope; |
c906108c SS |
18372 | } |
18373 | break; | |
edb3359d DJ |
18374 | case DW_TAG_inlined_subroutine: |
18375 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18376 | finish_block. */ | |
f1e6e072 | 18377 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 18378 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 18379 | list_to_add = cu->list_in_scope; |
edb3359d | 18380 | break; |
34eaf542 TT |
18381 | case DW_TAG_template_value_param: |
18382 | suppress_add = 1; | |
18383 | /* Fall through. */ | |
72929c62 | 18384 | case DW_TAG_constant: |
c906108c | 18385 | case DW_TAG_variable: |
254e6b9e | 18386 | case DW_TAG_member: |
0963b4bd MS |
18387 | /* Compilation with minimal debug info may result in |
18388 | variables with missing type entries. Change the | |
18389 | misleading `void' type to something sensible. */ | |
c906108c | 18390 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 18391 | SYMBOL_TYPE (sym) |
46bf5051 | 18392 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 18393 | |
e142c38c | 18394 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
18395 | /* In the case of DW_TAG_member, we should only be called for |
18396 | static const members. */ | |
18397 | if (die->tag == DW_TAG_member) | |
18398 | { | |
3863f96c DE |
18399 | /* dwarf2_add_field uses die_is_declaration, |
18400 | so we do the same. */ | |
254e6b9e DE |
18401 | gdb_assert (die_is_declaration (die, cu)); |
18402 | gdb_assert (attr); | |
18403 | } | |
c906108c SS |
18404 | if (attr) |
18405 | { | |
e7c27a73 | 18406 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 18407 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 18408 | if (!suppress_add) |
34eaf542 TT |
18409 | { |
18410 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 18411 | list_to_add = &global_symbols; |
34eaf542 | 18412 | else |
e37fd15a | 18413 | list_to_add = cu->list_in_scope; |
34eaf542 | 18414 | } |
c906108c SS |
18415 | break; |
18416 | } | |
e142c38c | 18417 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
18418 | if (attr) |
18419 | { | |
e7c27a73 | 18420 | var_decode_location (attr, sym, cu); |
e142c38c | 18421 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
18422 | |
18423 | /* Fortran explicitly imports any global symbols to the local | |
18424 | scope by DW_TAG_common_block. */ | |
18425 | if (cu->language == language_fortran && die->parent | |
18426 | && die->parent->tag == DW_TAG_common_block) | |
18427 | attr2 = NULL; | |
18428 | ||
caac4577 JG |
18429 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
18430 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
18431 | && !dwarf2_per_objfile->has_section_at_zero) | |
18432 | { | |
18433 | /* When a static variable is eliminated by the linker, | |
18434 | the corresponding debug information is not stripped | |
18435 | out, but the variable address is set to null; | |
18436 | do not add such variables into symbol table. */ | |
18437 | } | |
18438 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 18439 | { |
f55ee35c JK |
18440 | /* Workaround gfortran PR debug/40040 - it uses |
18441 | DW_AT_location for variables in -fPIC libraries which may | |
18442 | get overriden by other libraries/executable and get | |
18443 | a different address. Resolve it by the minimal symbol | |
18444 | which may come from inferior's executable using copy | |
18445 | relocation. Make this workaround only for gfortran as for | |
18446 | other compilers GDB cannot guess the minimal symbol | |
18447 | Fortran mangling kind. */ | |
18448 | if (cu->language == language_fortran && die->parent | |
18449 | && die->parent->tag == DW_TAG_module | |
18450 | && cu->producer | |
61012eef | 18451 | && startswith (cu->producer, "GNU Fortran ")) |
f1e6e072 | 18452 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 18453 | |
1c809c68 TT |
18454 | /* A variable with DW_AT_external is never static, |
18455 | but it may be block-scoped. */ | |
18456 | list_to_add = (cu->list_in_scope == &file_symbols | |
18457 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 18458 | } |
c906108c | 18459 | else |
e37fd15a | 18460 | list_to_add = cu->list_in_scope; |
c906108c SS |
18461 | } |
18462 | else | |
18463 | { | |
18464 | /* We do not know the address of this symbol. | |
c5aa993b JM |
18465 | If it is an external symbol and we have type information |
18466 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
18467 | The address of the variable will then be determined from | |
18468 | the minimal symbol table whenever the variable is | |
18469 | referenced. */ | |
e142c38c | 18470 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
18471 | |
18472 | /* Fortran explicitly imports any global symbols to the local | |
18473 | scope by DW_TAG_common_block. */ | |
18474 | if (cu->language == language_fortran && die->parent | |
18475 | && die->parent->tag == DW_TAG_common_block) | |
18476 | { | |
18477 | /* SYMBOL_CLASS doesn't matter here because | |
18478 | read_common_block is going to reset it. */ | |
18479 | if (!suppress_add) | |
18480 | list_to_add = cu->list_in_scope; | |
18481 | } | |
18482 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
18483 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 18484 | { |
0fe7935b DJ |
18485 | /* A variable with DW_AT_external is never static, but it |
18486 | may be block-scoped. */ | |
18487 | list_to_add = (cu->list_in_scope == &file_symbols | |
18488 | ? &global_symbols : cu->list_in_scope); | |
18489 | ||
f1e6e072 | 18490 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 18491 | } |
442ddf59 JK |
18492 | else if (!die_is_declaration (die, cu)) |
18493 | { | |
18494 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
18495 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
18496 | if (!suppress_add) |
18497 | list_to_add = cu->list_in_scope; | |
442ddf59 | 18498 | } |
c906108c SS |
18499 | } |
18500 | break; | |
18501 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
18502 | /* If we are inside a function, mark this as an argument. If |
18503 | not, we might be looking at an argument to an inlined function | |
18504 | when we do not have enough information to show inlined frames; | |
18505 | pretend it's a local variable in that case so that the user can | |
18506 | still see it. */ | |
18507 | if (context_stack_depth > 0 | |
18508 | && context_stack[context_stack_depth - 1].name != NULL) | |
18509 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 18510 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
18511 | if (attr) |
18512 | { | |
e7c27a73 | 18513 | var_decode_location (attr, sym, cu); |
c906108c | 18514 | } |
e142c38c | 18515 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
18516 | if (attr) |
18517 | { | |
e7c27a73 | 18518 | dwarf2_const_value (attr, sym, cu); |
c906108c | 18519 | } |
f346a30d | 18520 | |
e37fd15a | 18521 | list_to_add = cu->list_in_scope; |
c906108c SS |
18522 | break; |
18523 | case DW_TAG_unspecified_parameters: | |
18524 | /* From varargs functions; gdb doesn't seem to have any | |
18525 | interest in this information, so just ignore it for now. | |
18526 | (FIXME?) */ | |
18527 | break; | |
34eaf542 TT |
18528 | case DW_TAG_template_type_param: |
18529 | suppress_add = 1; | |
18530 | /* Fall through. */ | |
c906108c | 18531 | case DW_TAG_class_type: |
680b30c7 | 18532 | case DW_TAG_interface_type: |
c906108c SS |
18533 | case DW_TAG_structure_type: |
18534 | case DW_TAG_union_type: | |
72019c9c | 18535 | case DW_TAG_set_type: |
c906108c | 18536 | case DW_TAG_enumeration_type: |
f1e6e072 | 18537 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 18538 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 18539 | |
63d06c5c | 18540 | { |
987504bb | 18541 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
18542 | really ever be static objects: otherwise, if you try |
18543 | to, say, break of a class's method and you're in a file | |
18544 | which doesn't mention that class, it won't work unless | |
18545 | the check for all static symbols in lookup_symbol_aux | |
18546 | saves you. See the OtherFileClass tests in | |
18547 | gdb.c++/namespace.exp. */ | |
18548 | ||
e37fd15a | 18549 | if (!suppress_add) |
34eaf542 | 18550 | { |
34eaf542 TT |
18551 | list_to_add = (cu->list_in_scope == &file_symbols |
18552 | && (cu->language == language_cplus | |
18553 | || cu->language == language_java) | |
18554 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 18555 | |
64382290 TT |
18556 | /* The semantics of C++ state that "struct foo { |
18557 | ... }" also defines a typedef for "foo". A Java | |
18558 | class declaration also defines a typedef for the | |
18559 | class. */ | |
18560 | if (cu->language == language_cplus | |
18561 | || cu->language == language_java | |
45280282 IB |
18562 | || cu->language == language_ada |
18563 | || cu->language == language_d) | |
64382290 TT |
18564 | { |
18565 | /* The symbol's name is already allocated along | |
18566 | with this objfile, so we don't need to | |
18567 | duplicate it for the type. */ | |
18568 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
18569 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
18570 | } | |
63d06c5c DC |
18571 | } |
18572 | } | |
c906108c SS |
18573 | break; |
18574 | case DW_TAG_typedef: | |
f1e6e072 | 18575 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 18576 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 18577 | list_to_add = cu->list_in_scope; |
63d06c5c | 18578 | break; |
c906108c | 18579 | case DW_TAG_base_type: |
a02abb62 | 18580 | case DW_TAG_subrange_type: |
f1e6e072 | 18581 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 18582 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 18583 | list_to_add = cu->list_in_scope; |
c906108c SS |
18584 | break; |
18585 | case DW_TAG_enumerator: | |
e142c38c | 18586 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
18587 | if (attr) |
18588 | { | |
e7c27a73 | 18589 | dwarf2_const_value (attr, sym, cu); |
c906108c | 18590 | } |
63d06c5c DC |
18591 | { |
18592 | /* NOTE: carlton/2003-11-10: See comment above in the | |
18593 | DW_TAG_class_type, etc. block. */ | |
18594 | ||
e142c38c | 18595 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
18596 | && (cu->language == language_cplus |
18597 | || cu->language == language_java) | |
e142c38c | 18598 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 18599 | } |
c906108c | 18600 | break; |
74921315 | 18601 | case DW_TAG_imported_declaration: |
5c4e30ca | 18602 | case DW_TAG_namespace: |
f1e6e072 | 18603 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 18604 | list_to_add = &global_symbols; |
5c4e30ca | 18605 | break; |
530e8392 KB |
18606 | case DW_TAG_module: |
18607 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
18608 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
18609 | list_to_add = &global_symbols; | |
18610 | break; | |
4357ac6c | 18611 | case DW_TAG_common_block: |
f1e6e072 | 18612 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
18613 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
18614 | add_symbol_to_list (sym, cu->list_in_scope); | |
18615 | break; | |
c906108c SS |
18616 | default: |
18617 | /* Not a tag we recognize. Hopefully we aren't processing | |
18618 | trash data, but since we must specifically ignore things | |
18619 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 18620 | this point. */ |
e2e0b3e5 | 18621 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 18622 | dwarf_tag_name (die->tag)); |
c906108c SS |
18623 | break; |
18624 | } | |
df8a16a1 | 18625 | |
e37fd15a SW |
18626 | if (suppress_add) |
18627 | { | |
18628 | sym->hash_next = objfile->template_symbols; | |
18629 | objfile->template_symbols = sym; | |
18630 | list_to_add = NULL; | |
18631 | } | |
18632 | ||
18633 | if (list_to_add != NULL) | |
18634 | add_symbol_to_list (sym, list_to_add); | |
18635 | ||
df8a16a1 DJ |
18636 | /* For the benefit of old versions of GCC, check for anonymous |
18637 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 18638 | if (!cu->processing_has_namespace_info |
94af9270 | 18639 | && cu->language == language_cplus) |
a10964d1 | 18640 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
18641 | } |
18642 | return (sym); | |
18643 | } | |
18644 | ||
34eaf542 TT |
18645 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
18646 | ||
18647 | static struct symbol * | |
18648 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
18649 | { | |
18650 | return new_symbol_full (die, type, cu, NULL); | |
18651 | } | |
18652 | ||
98bfdba5 PA |
18653 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
18654 | zero-extend it as appropriate for the symbol's type. The DWARF | |
18655 | standard (v4) is not entirely clear about the meaning of using | |
18656 | DW_FORM_dataN for a constant with a signed type, where the type is | |
18657 | wider than the data. The conclusion of a discussion on the DWARF | |
18658 | list was that this is unspecified. We choose to always zero-extend | |
18659 | because that is the interpretation long in use by GCC. */ | |
c906108c | 18660 | |
98bfdba5 | 18661 | static gdb_byte * |
ff39bb5e | 18662 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 18663 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 18664 | { |
e7c27a73 | 18665 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
18666 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
18667 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
18668 | LONGEST l = DW_UNSND (attr); |
18669 | ||
18670 | if (bits < sizeof (*value) * 8) | |
18671 | { | |
18672 | l &= ((LONGEST) 1 << bits) - 1; | |
18673 | *value = l; | |
18674 | } | |
18675 | else if (bits == sizeof (*value) * 8) | |
18676 | *value = l; | |
18677 | else | |
18678 | { | |
18679 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
18680 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
18681 | return bytes; | |
18682 | } | |
18683 | ||
18684 | return NULL; | |
18685 | } | |
18686 | ||
18687 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
18688 | the value does not fit in *VALUE, set *BYTES - either already | |
18689 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
18690 | or, set *BATON, if we translated the constant to a location | |
18691 | expression. */ | |
18692 | ||
18693 | static void | |
ff39bb5e | 18694 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
18695 | const char *name, struct obstack *obstack, |
18696 | struct dwarf2_cu *cu, | |
d521ce57 | 18697 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
18698 | struct dwarf2_locexpr_baton **baton) |
18699 | { | |
18700 | struct objfile *objfile = cu->objfile; | |
18701 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 18702 | struct dwarf_block *blk; |
98bfdba5 PA |
18703 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
18704 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
18705 | ||
18706 | *value = 0; | |
18707 | *bytes = NULL; | |
18708 | *baton = NULL; | |
c906108c SS |
18709 | |
18710 | switch (attr->form) | |
18711 | { | |
18712 | case DW_FORM_addr: | |
3019eac3 | 18713 | case DW_FORM_GNU_addr_index: |
ac56253d | 18714 | { |
ac56253d TT |
18715 | gdb_byte *data; |
18716 | ||
98bfdba5 PA |
18717 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
18718 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 18719 | cu_header->addr_size, |
98bfdba5 | 18720 | TYPE_LENGTH (type)); |
ac56253d TT |
18721 | /* Symbols of this form are reasonably rare, so we just |
18722 | piggyback on the existing location code rather than writing | |
18723 | a new implementation of symbol_computed_ops. */ | |
7919a973 | 18724 | *baton = obstack_alloc (obstack, sizeof (struct dwarf2_locexpr_baton)); |
98bfdba5 PA |
18725 | (*baton)->per_cu = cu->per_cu; |
18726 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 18727 | |
98bfdba5 | 18728 | (*baton)->size = 2 + cu_header->addr_size; |
7919a973 | 18729 | data = obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 18730 | (*baton)->data = data; |
ac56253d TT |
18731 | |
18732 | data[0] = DW_OP_addr; | |
18733 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
18734 | byte_order, DW_ADDR (attr)); | |
18735 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 18736 | } |
c906108c | 18737 | break; |
4ac36638 | 18738 | case DW_FORM_string: |
93b5768b | 18739 | case DW_FORM_strp: |
3019eac3 | 18740 | case DW_FORM_GNU_str_index: |
36586728 | 18741 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
18742 | /* DW_STRING is already allocated on the objfile obstack, point |
18743 | directly to it. */ | |
d521ce57 | 18744 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 18745 | break; |
c906108c SS |
18746 | case DW_FORM_block1: |
18747 | case DW_FORM_block2: | |
18748 | case DW_FORM_block4: | |
18749 | case DW_FORM_block: | |
2dc7f7b3 | 18750 | case DW_FORM_exprloc: |
c906108c | 18751 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
18752 | if (TYPE_LENGTH (type) != blk->size) |
18753 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
18754 | TYPE_LENGTH (type)); | |
18755 | *bytes = blk->data; | |
c906108c | 18756 | break; |
2df3850c JM |
18757 | |
18758 | /* The DW_AT_const_value attributes are supposed to carry the | |
18759 | symbol's value "represented as it would be on the target | |
18760 | architecture." By the time we get here, it's already been | |
18761 | converted to host endianness, so we just need to sign- or | |
18762 | zero-extend it as appropriate. */ | |
18763 | case DW_FORM_data1: | |
3aef2284 | 18764 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 18765 | break; |
c906108c | 18766 | case DW_FORM_data2: |
3aef2284 | 18767 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 18768 | break; |
c906108c | 18769 | case DW_FORM_data4: |
3aef2284 | 18770 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 18771 | break; |
c906108c | 18772 | case DW_FORM_data8: |
3aef2284 | 18773 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
18774 | break; |
18775 | ||
c906108c | 18776 | case DW_FORM_sdata: |
98bfdba5 | 18777 | *value = DW_SND (attr); |
2df3850c JM |
18778 | break; |
18779 | ||
c906108c | 18780 | case DW_FORM_udata: |
98bfdba5 | 18781 | *value = DW_UNSND (attr); |
c906108c | 18782 | break; |
2df3850c | 18783 | |
c906108c | 18784 | default: |
4d3c2250 | 18785 | complaint (&symfile_complaints, |
e2e0b3e5 | 18786 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 18787 | dwarf_form_name (attr->form)); |
98bfdba5 | 18788 | *value = 0; |
c906108c SS |
18789 | break; |
18790 | } | |
18791 | } | |
18792 | ||
2df3850c | 18793 | |
98bfdba5 PA |
18794 | /* Copy constant value from an attribute to a symbol. */ |
18795 | ||
2df3850c | 18796 | static void |
ff39bb5e | 18797 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 18798 | struct dwarf2_cu *cu) |
2df3850c | 18799 | { |
98bfdba5 PA |
18800 | struct objfile *objfile = cu->objfile; |
18801 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 18802 | LONGEST value; |
d521ce57 | 18803 | const gdb_byte *bytes; |
98bfdba5 | 18804 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 18805 | |
98bfdba5 PA |
18806 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
18807 | SYMBOL_PRINT_NAME (sym), | |
18808 | &objfile->objfile_obstack, cu, | |
18809 | &value, &bytes, &baton); | |
2df3850c | 18810 | |
98bfdba5 PA |
18811 | if (baton != NULL) |
18812 | { | |
98bfdba5 | 18813 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 18814 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
18815 | } |
18816 | else if (bytes != NULL) | |
18817 | { | |
18818 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 18819 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
18820 | } |
18821 | else | |
18822 | { | |
18823 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 18824 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 18825 | } |
2df3850c JM |
18826 | } |
18827 | ||
c906108c SS |
18828 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
18829 | ||
18830 | static struct type * | |
e7c27a73 | 18831 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18832 | { |
c906108c | 18833 | struct attribute *type_attr; |
c906108c | 18834 | |
e142c38c | 18835 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
18836 | if (!type_attr) |
18837 | { | |
18838 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 18839 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 18840 | } |
348e048f | 18841 | |
673bfd45 | 18842 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
18843 | } |
18844 | ||
b4ba55a1 JB |
18845 | /* True iff CU's producer generates GNAT Ada auxiliary information |
18846 | that allows to find parallel types through that information instead | |
18847 | of having to do expensive parallel lookups by type name. */ | |
18848 | ||
18849 | static int | |
18850 | need_gnat_info (struct dwarf2_cu *cu) | |
18851 | { | |
18852 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
18853 | of GNAT produces this auxiliary information, without any indication | |
18854 | that it is produced. Part of enhancing the FSF version of GNAT | |
18855 | to produce that information will be to put in place an indicator | |
18856 | that we can use in order to determine whether the descriptive type | |
18857 | info is available or not. One suggestion that has been made is | |
18858 | to use a new attribute, attached to the CU die. For now, assume | |
18859 | that the descriptive type info is not available. */ | |
18860 | return 0; | |
18861 | } | |
18862 | ||
b4ba55a1 JB |
18863 | /* Return the auxiliary type of the die in question using its |
18864 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
18865 | attribute is not present. */ | |
18866 | ||
18867 | static struct type * | |
18868 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
18869 | { | |
b4ba55a1 | 18870 | struct attribute *type_attr; |
b4ba55a1 JB |
18871 | |
18872 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
18873 | if (!type_attr) | |
18874 | return NULL; | |
18875 | ||
673bfd45 | 18876 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
18877 | } |
18878 | ||
18879 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
18880 | descriptive type accordingly. */ | |
18881 | ||
18882 | static void | |
18883 | set_descriptive_type (struct type *type, struct die_info *die, | |
18884 | struct dwarf2_cu *cu) | |
18885 | { | |
18886 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
18887 | ||
18888 | if (descriptive_type) | |
18889 | { | |
18890 | ALLOCATE_GNAT_AUX_TYPE (type); | |
18891 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
18892 | } | |
18893 | } | |
18894 | ||
c906108c SS |
18895 | /* Return the containing type of the die in question using its |
18896 | DW_AT_containing_type attribute. */ | |
18897 | ||
18898 | static struct type * | |
e7c27a73 | 18899 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18900 | { |
c906108c | 18901 | struct attribute *type_attr; |
c906108c | 18902 | |
e142c38c | 18903 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
18904 | if (!type_attr) |
18905 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 18906 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 18907 | |
673bfd45 | 18908 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
18909 | } |
18910 | ||
ac9ec31b DE |
18911 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
18912 | ||
18913 | static struct type * | |
18914 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
18915 | { | |
18916 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18917 | char *message, *saved; | |
18918 | ||
18919 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 18920 | objfile_name (objfile), |
ac9ec31b DE |
18921 | cu->header.offset.sect_off, |
18922 | die->offset.sect_off); | |
18923 | saved = obstack_copy0 (&objfile->objfile_obstack, | |
18924 | message, strlen (message)); | |
18925 | xfree (message); | |
18926 | ||
18927 | return init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); | |
18928 | } | |
18929 | ||
673bfd45 | 18930 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
18931 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
18932 | DW_AT_containing_type. | |
673bfd45 DE |
18933 | If there is no type substitute an error marker. */ |
18934 | ||
c906108c | 18935 | static struct type * |
ff39bb5e | 18936 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 18937 | struct dwarf2_cu *cu) |
c906108c | 18938 | { |
bb5ed363 | 18939 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
18940 | struct type *this_type; |
18941 | ||
ac9ec31b DE |
18942 | gdb_assert (attr->name == DW_AT_type |
18943 | || attr->name == DW_AT_GNAT_descriptive_type | |
18944 | || attr->name == DW_AT_containing_type); | |
18945 | ||
673bfd45 DE |
18946 | /* First see if we have it cached. */ |
18947 | ||
36586728 TT |
18948 | if (attr->form == DW_FORM_GNU_ref_alt) |
18949 | { | |
18950 | struct dwarf2_per_cu_data *per_cu; | |
18951 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
18952 | ||
18953 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
18954 | this_type = get_die_type_at_offset (offset, per_cu); | |
18955 | } | |
7771576e | 18956 | else if (attr_form_is_ref (attr)) |
673bfd45 | 18957 | { |
b64f50a1 | 18958 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
18959 | |
18960 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
18961 | } | |
55f1336d | 18962 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 18963 | { |
ac9ec31b | 18964 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 18965 | |
ac9ec31b | 18966 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
18967 | } |
18968 | else | |
18969 | { | |
ac9ec31b DE |
18970 | complaint (&symfile_complaints, |
18971 | _("Dwarf Error: Bad type attribute %s in DIE" | |
18972 | " at 0x%x [in module %s]"), | |
18973 | dwarf_attr_name (attr->name), die->offset.sect_off, | |
4262abfb | 18974 | objfile_name (objfile)); |
ac9ec31b | 18975 | return build_error_marker_type (cu, die); |
673bfd45 DE |
18976 | } |
18977 | ||
18978 | /* If not cached we need to read it in. */ | |
18979 | ||
18980 | if (this_type == NULL) | |
18981 | { | |
ac9ec31b | 18982 | struct die_info *type_die = NULL; |
673bfd45 DE |
18983 | struct dwarf2_cu *type_cu = cu; |
18984 | ||
7771576e | 18985 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
18986 | type_die = follow_die_ref (die, attr, &type_cu); |
18987 | if (type_die == NULL) | |
18988 | return build_error_marker_type (cu, die); | |
18989 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
18990 | from an inter-CU reference and the type's CU got expanded before |
18991 | ours. */ | |
ac9ec31b | 18992 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
18993 | } |
18994 | ||
18995 | /* If we still don't have a type use an error marker. */ | |
18996 | ||
18997 | if (this_type == NULL) | |
ac9ec31b | 18998 | return build_error_marker_type (cu, die); |
673bfd45 | 18999 | |
f792889a | 19000 | return this_type; |
c906108c SS |
19001 | } |
19002 | ||
673bfd45 DE |
19003 | /* Return the type in DIE, CU. |
19004 | Returns NULL for invalid types. | |
19005 | ||
02142a6c | 19006 | This first does a lookup in die_type_hash, |
673bfd45 DE |
19007 | and only reads the die in if necessary. |
19008 | ||
19009 | NOTE: This can be called when reading in partial or full symbols. */ | |
19010 | ||
f792889a | 19011 | static struct type * |
e7c27a73 | 19012 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19013 | { |
f792889a DJ |
19014 | struct type *this_type; |
19015 | ||
19016 | this_type = get_die_type (die, cu); | |
19017 | if (this_type) | |
19018 | return this_type; | |
19019 | ||
673bfd45 DE |
19020 | return read_type_die_1 (die, cu); |
19021 | } | |
19022 | ||
19023 | /* Read the type in DIE, CU. | |
19024 | Returns NULL for invalid types. */ | |
19025 | ||
19026 | static struct type * | |
19027 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
19028 | { | |
19029 | struct type *this_type = NULL; | |
19030 | ||
c906108c SS |
19031 | switch (die->tag) |
19032 | { | |
19033 | case DW_TAG_class_type: | |
680b30c7 | 19034 | case DW_TAG_interface_type: |
c906108c SS |
19035 | case DW_TAG_structure_type: |
19036 | case DW_TAG_union_type: | |
f792889a | 19037 | this_type = read_structure_type (die, cu); |
c906108c SS |
19038 | break; |
19039 | case DW_TAG_enumeration_type: | |
f792889a | 19040 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
19041 | break; |
19042 | case DW_TAG_subprogram: | |
19043 | case DW_TAG_subroutine_type: | |
edb3359d | 19044 | case DW_TAG_inlined_subroutine: |
f792889a | 19045 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
19046 | break; |
19047 | case DW_TAG_array_type: | |
f792889a | 19048 | this_type = read_array_type (die, cu); |
c906108c | 19049 | break; |
72019c9c | 19050 | case DW_TAG_set_type: |
f792889a | 19051 | this_type = read_set_type (die, cu); |
72019c9c | 19052 | break; |
c906108c | 19053 | case DW_TAG_pointer_type: |
f792889a | 19054 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
19055 | break; |
19056 | case DW_TAG_ptr_to_member_type: | |
f792889a | 19057 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
19058 | break; |
19059 | case DW_TAG_reference_type: | |
f792889a | 19060 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
19061 | break; |
19062 | case DW_TAG_const_type: | |
f792889a | 19063 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
19064 | break; |
19065 | case DW_TAG_volatile_type: | |
f792889a | 19066 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 19067 | break; |
06d66ee9 TT |
19068 | case DW_TAG_restrict_type: |
19069 | this_type = read_tag_restrict_type (die, cu); | |
19070 | break; | |
c906108c | 19071 | case DW_TAG_string_type: |
f792889a | 19072 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
19073 | break; |
19074 | case DW_TAG_typedef: | |
f792889a | 19075 | this_type = read_typedef (die, cu); |
c906108c | 19076 | break; |
a02abb62 | 19077 | case DW_TAG_subrange_type: |
f792889a | 19078 | this_type = read_subrange_type (die, cu); |
a02abb62 | 19079 | break; |
c906108c | 19080 | case DW_TAG_base_type: |
f792889a | 19081 | this_type = read_base_type (die, cu); |
c906108c | 19082 | break; |
81a17f79 | 19083 | case DW_TAG_unspecified_type: |
f792889a | 19084 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 19085 | break; |
0114d602 DJ |
19086 | case DW_TAG_namespace: |
19087 | this_type = read_namespace_type (die, cu); | |
19088 | break; | |
f55ee35c JK |
19089 | case DW_TAG_module: |
19090 | this_type = read_module_type (die, cu); | |
19091 | break; | |
a2c2acaf MW |
19092 | case DW_TAG_atomic_type: |
19093 | this_type = read_tag_atomic_type (die, cu); | |
19094 | break; | |
c906108c | 19095 | default: |
3e43a32a MS |
19096 | complaint (&symfile_complaints, |
19097 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 19098 | dwarf_tag_name (die->tag)); |
c906108c SS |
19099 | break; |
19100 | } | |
63d06c5c | 19101 | |
f792889a | 19102 | return this_type; |
63d06c5c DC |
19103 | } |
19104 | ||
abc72ce4 DE |
19105 | /* See if we can figure out if the class lives in a namespace. We do |
19106 | this by looking for a member function; its demangled name will | |
19107 | contain namespace info, if there is any. | |
19108 | Return the computed name or NULL. | |
19109 | Space for the result is allocated on the objfile's obstack. | |
19110 | This is the full-die version of guess_partial_die_structure_name. | |
19111 | In this case we know DIE has no useful parent. */ | |
19112 | ||
19113 | static char * | |
19114 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
19115 | { | |
19116 | struct die_info *spec_die; | |
19117 | struct dwarf2_cu *spec_cu; | |
19118 | struct die_info *child; | |
19119 | ||
19120 | spec_cu = cu; | |
19121 | spec_die = die_specification (die, &spec_cu); | |
19122 | if (spec_die != NULL) | |
19123 | { | |
19124 | die = spec_die; | |
19125 | cu = spec_cu; | |
19126 | } | |
19127 | ||
19128 | for (child = die->child; | |
19129 | child != NULL; | |
19130 | child = child->sibling) | |
19131 | { | |
19132 | if (child->tag == DW_TAG_subprogram) | |
19133 | { | |
19134 | struct attribute *attr; | |
19135 | ||
19136 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
19137 | if (attr == NULL) | |
19138 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
19139 | if (attr != NULL) | |
19140 | { | |
19141 | char *actual_name | |
19142 | = language_class_name_from_physname (cu->language_defn, | |
19143 | DW_STRING (attr)); | |
19144 | char *name = NULL; | |
19145 | ||
19146 | if (actual_name != NULL) | |
19147 | { | |
15d034d0 | 19148 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
19149 | |
19150 | if (die_name != NULL | |
19151 | && strcmp (die_name, actual_name) != 0) | |
19152 | { | |
19153 | /* Strip off the class name from the full name. | |
19154 | We want the prefix. */ | |
19155 | int die_name_len = strlen (die_name); | |
19156 | int actual_name_len = strlen (actual_name); | |
19157 | ||
19158 | /* Test for '::' as a sanity check. */ | |
19159 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
19160 | && actual_name[actual_name_len |
19161 | - die_name_len - 1] == ':') | |
abc72ce4 | 19162 | name = |
34a68019 | 19163 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb TT |
19164 | actual_name, |
19165 | actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
19166 | } |
19167 | } | |
19168 | xfree (actual_name); | |
19169 | return name; | |
19170 | } | |
19171 | } | |
19172 | } | |
19173 | ||
19174 | return NULL; | |
19175 | } | |
19176 | ||
96408a79 SA |
19177 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
19178 | prefix part in such case. See | |
19179 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
19180 | ||
19181 | static char * | |
19182 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
19183 | { | |
19184 | struct attribute *attr; | |
19185 | char *base; | |
19186 | ||
19187 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
19188 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
19189 | return NULL; | |
19190 | ||
19191 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
19192 | if (attr != NULL && DW_STRING (attr) != NULL) | |
19193 | return NULL; | |
19194 | ||
19195 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
19196 | if (attr == NULL) | |
19197 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
19198 | if (attr == NULL || DW_STRING (attr) == NULL) | |
19199 | return NULL; | |
19200 | ||
19201 | /* dwarf2_name had to be already called. */ | |
19202 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
19203 | ||
19204 | /* Strip the base name, keep any leading namespaces/classes. */ | |
19205 | base = strrchr (DW_STRING (attr), ':'); | |
19206 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
19207 | return ""; | |
19208 | ||
34a68019 | 19209 | return obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb | 19210 | DW_STRING (attr), &base[-1] - DW_STRING (attr)); |
96408a79 SA |
19211 | } |
19212 | ||
fdde2d81 | 19213 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 19214 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 19215 | |
0114d602 DJ |
19216 | For example, if we're within the method foo() in the following |
19217 | code: | |
19218 | ||
19219 | namespace N { | |
19220 | class C { | |
19221 | void foo () { | |
19222 | } | |
19223 | }; | |
19224 | } | |
19225 | ||
19226 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 19227 | |
0d5cff50 | 19228 | static const char * |
e142c38c | 19229 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 19230 | { |
0114d602 DJ |
19231 | struct die_info *parent, *spec_die; |
19232 | struct dwarf2_cu *spec_cu; | |
19233 | struct type *parent_type; | |
96408a79 | 19234 | char *retval; |
63d06c5c | 19235 | |
f55ee35c | 19236 | if (cu->language != language_cplus && cu->language != language_java |
45280282 | 19237 | && cu->language != language_fortran && cu->language != language_d) |
0114d602 DJ |
19238 | return ""; |
19239 | ||
96408a79 SA |
19240 | retval = anonymous_struct_prefix (die, cu); |
19241 | if (retval) | |
19242 | return retval; | |
19243 | ||
0114d602 DJ |
19244 | /* We have to be careful in the presence of DW_AT_specification. |
19245 | For example, with GCC 3.4, given the code | |
19246 | ||
19247 | namespace N { | |
19248 | void foo() { | |
19249 | // Definition of N::foo. | |
19250 | } | |
19251 | } | |
19252 | ||
19253 | then we'll have a tree of DIEs like this: | |
19254 | ||
19255 | 1: DW_TAG_compile_unit | |
19256 | 2: DW_TAG_namespace // N | |
19257 | 3: DW_TAG_subprogram // declaration of N::foo | |
19258 | 4: DW_TAG_subprogram // definition of N::foo | |
19259 | DW_AT_specification // refers to die #3 | |
19260 | ||
19261 | Thus, when processing die #4, we have to pretend that we're in | |
19262 | the context of its DW_AT_specification, namely the contex of die | |
19263 | #3. */ | |
19264 | spec_cu = cu; | |
19265 | spec_die = die_specification (die, &spec_cu); | |
19266 | if (spec_die == NULL) | |
19267 | parent = die->parent; | |
19268 | else | |
63d06c5c | 19269 | { |
0114d602 DJ |
19270 | parent = spec_die->parent; |
19271 | cu = spec_cu; | |
63d06c5c | 19272 | } |
0114d602 DJ |
19273 | |
19274 | if (parent == NULL) | |
19275 | return ""; | |
98bfdba5 PA |
19276 | else if (parent->building_fullname) |
19277 | { | |
19278 | const char *name; | |
19279 | const char *parent_name; | |
19280 | ||
19281 | /* It has been seen on RealView 2.2 built binaries, | |
19282 | DW_TAG_template_type_param types actually _defined_ as | |
19283 | children of the parent class: | |
19284 | ||
19285 | enum E {}; | |
19286 | template class <class Enum> Class{}; | |
19287 | Class<enum E> class_e; | |
19288 | ||
19289 | 1: DW_TAG_class_type (Class) | |
19290 | 2: DW_TAG_enumeration_type (E) | |
19291 | 3: DW_TAG_enumerator (enum1:0) | |
19292 | 3: DW_TAG_enumerator (enum2:1) | |
19293 | ... | |
19294 | 2: DW_TAG_template_type_param | |
19295 | DW_AT_type DW_FORM_ref_udata (E) | |
19296 | ||
19297 | Besides being broken debug info, it can put GDB into an | |
19298 | infinite loop. Consider: | |
19299 | ||
19300 | When we're building the full name for Class<E>, we'll start | |
19301 | at Class, and go look over its template type parameters, | |
19302 | finding E. We'll then try to build the full name of E, and | |
19303 | reach here. We're now trying to build the full name of E, | |
19304 | and look over the parent DIE for containing scope. In the | |
19305 | broken case, if we followed the parent DIE of E, we'd again | |
19306 | find Class, and once again go look at its template type | |
19307 | arguments, etc., etc. Simply don't consider such parent die | |
19308 | as source-level parent of this die (it can't be, the language | |
19309 | doesn't allow it), and break the loop here. */ | |
19310 | name = dwarf2_name (die, cu); | |
19311 | parent_name = dwarf2_name (parent, cu); | |
19312 | complaint (&symfile_complaints, | |
19313 | _("template param type '%s' defined within parent '%s'"), | |
19314 | name ? name : "<unknown>", | |
19315 | parent_name ? parent_name : "<unknown>"); | |
19316 | return ""; | |
19317 | } | |
63d06c5c | 19318 | else |
0114d602 DJ |
19319 | switch (parent->tag) |
19320 | { | |
63d06c5c | 19321 | case DW_TAG_namespace: |
0114d602 | 19322 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
19323 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
19324 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
19325 | Work around this problem here. */ | |
19326 | if (cu->language == language_cplus | |
19327 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
19328 | return ""; | |
0114d602 DJ |
19329 | /* We give a name to even anonymous namespaces. */ |
19330 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 19331 | case DW_TAG_class_type: |
680b30c7 | 19332 | case DW_TAG_interface_type: |
63d06c5c | 19333 | case DW_TAG_structure_type: |
0114d602 | 19334 | case DW_TAG_union_type: |
f55ee35c | 19335 | case DW_TAG_module: |
0114d602 DJ |
19336 | parent_type = read_type_die (parent, cu); |
19337 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19338 | return TYPE_TAG_NAME (parent_type); | |
19339 | else | |
19340 | /* An anonymous structure is only allowed non-static data | |
19341 | members; no typedefs, no member functions, et cetera. | |
19342 | So it does not need a prefix. */ | |
19343 | return ""; | |
abc72ce4 | 19344 | case DW_TAG_compile_unit: |
95554aad | 19345 | case DW_TAG_partial_unit: |
abc72ce4 DE |
19346 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
19347 | if (cu->language == language_cplus | |
8b70b953 | 19348 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
19349 | && die->child != NULL |
19350 | && (die->tag == DW_TAG_class_type | |
19351 | || die->tag == DW_TAG_structure_type | |
19352 | || die->tag == DW_TAG_union_type)) | |
19353 | { | |
19354 | char *name = guess_full_die_structure_name (die, cu); | |
19355 | if (name != NULL) | |
19356 | return name; | |
19357 | } | |
19358 | return ""; | |
3d567982 TT |
19359 | case DW_TAG_enumeration_type: |
19360 | parent_type = read_type_die (parent, cu); | |
19361 | if (TYPE_DECLARED_CLASS (parent_type)) | |
19362 | { | |
19363 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19364 | return TYPE_TAG_NAME (parent_type); | |
19365 | return ""; | |
19366 | } | |
19367 | /* Fall through. */ | |
63d06c5c | 19368 | default: |
8176b9b8 | 19369 | return determine_prefix (parent, cu); |
63d06c5c | 19370 | } |
63d06c5c DC |
19371 | } |
19372 | ||
3e43a32a MS |
19373 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
19374 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
19375 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
19376 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
19377 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 19378 | |
f55ee35c | 19379 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
19380 | |
19381 | static char * | |
f55ee35c JK |
19382 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
19383 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 19384 | { |
f55ee35c | 19385 | const char *lead = ""; |
5c315b68 | 19386 | const char *sep; |
63d06c5c | 19387 | |
3e43a32a MS |
19388 | if (suffix == NULL || suffix[0] == '\0' |
19389 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
19390 | sep = ""; |
19391 | else if (cu->language == language_java) | |
19392 | sep = "."; | |
45280282 IB |
19393 | else if (cu->language == language_d) |
19394 | { | |
19395 | /* For D, the 'main' function could be defined in any module, but it | |
19396 | should never be prefixed. */ | |
19397 | if (strcmp (suffix, "D main") == 0) | |
19398 | { | |
19399 | prefix = ""; | |
19400 | sep = ""; | |
19401 | } | |
19402 | else | |
19403 | sep = "."; | |
19404 | } | |
f55ee35c JK |
19405 | else if (cu->language == language_fortran && physname) |
19406 | { | |
19407 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
19408 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
19409 | ||
19410 | lead = "__"; | |
19411 | sep = "_MOD_"; | |
19412 | } | |
987504bb JJ |
19413 | else |
19414 | sep = "::"; | |
63d06c5c | 19415 | |
6dd47d34 DE |
19416 | if (prefix == NULL) |
19417 | prefix = ""; | |
19418 | if (suffix == NULL) | |
19419 | suffix = ""; | |
19420 | ||
987504bb JJ |
19421 | if (obs == NULL) |
19422 | { | |
3e43a32a MS |
19423 | char *retval |
19424 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 19425 | |
f55ee35c JK |
19426 | strcpy (retval, lead); |
19427 | strcat (retval, prefix); | |
6dd47d34 DE |
19428 | strcat (retval, sep); |
19429 | strcat (retval, suffix); | |
63d06c5c DC |
19430 | return retval; |
19431 | } | |
987504bb JJ |
19432 | else |
19433 | { | |
19434 | /* We have an obstack. */ | |
f55ee35c | 19435 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 19436 | } |
63d06c5c DC |
19437 | } |
19438 | ||
c906108c SS |
19439 | /* Return sibling of die, NULL if no sibling. */ |
19440 | ||
f9aca02d | 19441 | static struct die_info * |
fba45db2 | 19442 | sibling_die (struct die_info *die) |
c906108c | 19443 | { |
639d11d3 | 19444 | return die->sibling; |
c906108c SS |
19445 | } |
19446 | ||
71c25dea TT |
19447 | /* Get name of a die, return NULL if not found. */ |
19448 | ||
15d034d0 TT |
19449 | static const char * |
19450 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
19451 | struct obstack *obstack) |
19452 | { | |
19453 | if (name && cu->language == language_cplus) | |
19454 | { | |
19455 | char *canon_name = cp_canonicalize_string (name); | |
19456 | ||
19457 | if (canon_name != NULL) | |
19458 | { | |
19459 | if (strcmp (canon_name, name) != 0) | |
10f0c4bb | 19460 | name = obstack_copy0 (obstack, canon_name, strlen (canon_name)); |
71c25dea TT |
19461 | xfree (canon_name); |
19462 | } | |
19463 | } | |
19464 | ||
19465 | return name; | |
c906108c SS |
19466 | } |
19467 | ||
96553a0c DE |
19468 | /* Get name of a die, return NULL if not found. |
19469 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 19470 | |
15d034d0 | 19471 | static const char * |
e142c38c | 19472 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
19473 | { |
19474 | struct attribute *attr; | |
19475 | ||
e142c38c | 19476 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 19477 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 19478 | && die->tag != DW_TAG_namespace |
53832f31 TT |
19479 | && die->tag != DW_TAG_class_type |
19480 | && die->tag != DW_TAG_interface_type | |
19481 | && die->tag != DW_TAG_structure_type | |
19482 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
19483 | return NULL; |
19484 | ||
19485 | switch (die->tag) | |
19486 | { | |
19487 | case DW_TAG_compile_unit: | |
95554aad | 19488 | case DW_TAG_partial_unit: |
71c25dea TT |
19489 | /* Compilation units have a DW_AT_name that is a filename, not |
19490 | a source language identifier. */ | |
19491 | case DW_TAG_enumeration_type: | |
19492 | case DW_TAG_enumerator: | |
19493 | /* These tags always have simple identifiers already; no need | |
19494 | to canonicalize them. */ | |
19495 | return DW_STRING (attr); | |
907af001 | 19496 | |
96553a0c DE |
19497 | case DW_TAG_namespace: |
19498 | if (attr != NULL && DW_STRING (attr) != NULL) | |
19499 | return DW_STRING (attr); | |
19500 | return CP_ANONYMOUS_NAMESPACE_STR; | |
19501 | ||
418835cc KS |
19502 | case DW_TAG_subprogram: |
19503 | /* Java constructors will all be named "<init>", so return | |
19504 | the class name when we see this special case. */ | |
19505 | if (cu->language == language_java | |
19506 | && DW_STRING (attr) != NULL | |
19507 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
19508 | { | |
19509 | struct dwarf2_cu *spec_cu = cu; | |
19510 | struct die_info *spec_die; | |
19511 | ||
19512 | /* GCJ will output '<init>' for Java constructor names. | |
19513 | For this special case, return the name of the parent class. */ | |
19514 | ||
cdc07690 | 19515 | /* GCJ may output subprogram DIEs with AT_specification set. |
418835cc KS |
19516 | If so, use the name of the specified DIE. */ |
19517 | spec_die = die_specification (die, &spec_cu); | |
19518 | if (spec_die != NULL) | |
19519 | return dwarf2_name (spec_die, spec_cu); | |
19520 | ||
19521 | do | |
19522 | { | |
19523 | die = die->parent; | |
19524 | if (die->tag == DW_TAG_class_type) | |
19525 | return dwarf2_name (die, cu); | |
19526 | } | |
95554aad TT |
19527 | while (die->tag != DW_TAG_compile_unit |
19528 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 19529 | } |
907af001 UW |
19530 | break; |
19531 | ||
19532 | case DW_TAG_class_type: | |
19533 | case DW_TAG_interface_type: | |
19534 | case DW_TAG_structure_type: | |
19535 | case DW_TAG_union_type: | |
19536 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
19537 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
19538 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
19539 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 19540 | if (attr && DW_STRING (attr) |
61012eef GB |
19541 | && (startswith (DW_STRING (attr), "._") |
19542 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 19543 | return NULL; |
53832f31 TT |
19544 | |
19545 | /* GCC might emit a nameless typedef that has a linkage name. See | |
19546 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
19547 | if (!attr || DW_STRING (attr) == NULL) | |
19548 | { | |
df5c6c50 | 19549 | char *demangled = NULL; |
53832f31 TT |
19550 | |
19551 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
19552 | if (attr == NULL) | |
19553 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
19554 | ||
19555 | if (attr == NULL || DW_STRING (attr) == NULL) | |
19556 | return NULL; | |
19557 | ||
df5c6c50 JK |
19558 | /* Avoid demangling DW_STRING (attr) the second time on a second |
19559 | call for the same DIE. */ | |
19560 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 19561 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
19562 | |
19563 | if (demangled) | |
19564 | { | |
96408a79 SA |
19565 | char *base; |
19566 | ||
53832f31 | 19567 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 TT |
19568 | DW_STRING (attr) |
19569 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
19570 | demangled, strlen (demangled)); | |
53832f31 TT |
19571 | DW_STRING_IS_CANONICAL (attr) = 1; |
19572 | xfree (demangled); | |
96408a79 SA |
19573 | |
19574 | /* Strip any leading namespaces/classes, keep only the base name. | |
19575 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
19576 | base = strrchr (DW_STRING (attr), ':'); | |
19577 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
19578 | return &base[1]; | |
19579 | else | |
19580 | return DW_STRING (attr); | |
53832f31 TT |
19581 | } |
19582 | } | |
907af001 UW |
19583 | break; |
19584 | ||
71c25dea | 19585 | default: |
907af001 UW |
19586 | break; |
19587 | } | |
19588 | ||
19589 | if (!DW_STRING_IS_CANONICAL (attr)) | |
19590 | { | |
19591 | DW_STRING (attr) | |
19592 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
34a68019 | 19593 | &cu->objfile->per_bfd->storage_obstack); |
907af001 | 19594 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 19595 | } |
907af001 | 19596 | return DW_STRING (attr); |
9219021c DC |
19597 | } |
19598 | ||
19599 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
19600 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
19601 | containing the return value on output. */ | |
9219021c DC |
19602 | |
19603 | static struct die_info * | |
f2f0e013 | 19604 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
19605 | { |
19606 | struct attribute *attr; | |
9219021c | 19607 | |
f2f0e013 | 19608 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
19609 | if (attr == NULL) |
19610 | return NULL; | |
19611 | ||
f2f0e013 | 19612 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
19613 | } |
19614 | ||
c906108c SS |
19615 | /* Convert a DIE tag into its string name. */ |
19616 | ||
f39c6ffd | 19617 | static const char * |
aa1ee363 | 19618 | dwarf_tag_name (unsigned tag) |
c906108c | 19619 | { |
f39c6ffd TT |
19620 | const char *name = get_DW_TAG_name (tag); |
19621 | ||
19622 | if (name == NULL) | |
19623 | return "DW_TAG_<unknown>"; | |
19624 | ||
19625 | return name; | |
c906108c SS |
19626 | } |
19627 | ||
19628 | /* Convert a DWARF attribute code into its string name. */ | |
19629 | ||
f39c6ffd | 19630 | static const char * |
aa1ee363 | 19631 | dwarf_attr_name (unsigned attr) |
c906108c | 19632 | { |
f39c6ffd TT |
19633 | const char *name; |
19634 | ||
c764a876 | 19635 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
19636 | if (attr == DW_AT_MIPS_fde) |
19637 | return "DW_AT_MIPS_fde"; | |
19638 | #else | |
19639 | if (attr == DW_AT_HP_block_index) | |
19640 | return "DW_AT_HP_block_index"; | |
c764a876 | 19641 | #endif |
f39c6ffd TT |
19642 | |
19643 | name = get_DW_AT_name (attr); | |
19644 | ||
19645 | if (name == NULL) | |
19646 | return "DW_AT_<unknown>"; | |
19647 | ||
19648 | return name; | |
c906108c SS |
19649 | } |
19650 | ||
19651 | /* Convert a DWARF value form code into its string name. */ | |
19652 | ||
f39c6ffd | 19653 | static const char * |
aa1ee363 | 19654 | dwarf_form_name (unsigned form) |
c906108c | 19655 | { |
f39c6ffd TT |
19656 | const char *name = get_DW_FORM_name (form); |
19657 | ||
19658 | if (name == NULL) | |
19659 | return "DW_FORM_<unknown>"; | |
19660 | ||
19661 | return name; | |
c906108c SS |
19662 | } |
19663 | ||
19664 | static char * | |
fba45db2 | 19665 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
19666 | { |
19667 | if (mybool) | |
19668 | return "TRUE"; | |
19669 | else | |
19670 | return "FALSE"; | |
19671 | } | |
19672 | ||
19673 | /* Convert a DWARF type code into its string name. */ | |
19674 | ||
f39c6ffd | 19675 | static const char * |
aa1ee363 | 19676 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 19677 | { |
f39c6ffd | 19678 | const char *name = get_DW_ATE_name (enc); |
c906108c | 19679 | |
f39c6ffd TT |
19680 | if (name == NULL) |
19681 | return "DW_ATE_<unknown>"; | |
c906108c | 19682 | |
f39c6ffd | 19683 | return name; |
c906108c | 19684 | } |
c906108c | 19685 | |
f9aca02d | 19686 | static void |
d97bc12b | 19687 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
19688 | { |
19689 | unsigned int i; | |
19690 | ||
d97bc12b DE |
19691 | print_spaces (indent, f); |
19692 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 19693 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
19694 | |
19695 | if (die->parent != NULL) | |
19696 | { | |
19697 | print_spaces (indent, f); | |
19698 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 19699 | die->parent->offset.sect_off); |
d97bc12b DE |
19700 | } |
19701 | ||
19702 | print_spaces (indent, f); | |
19703 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 19704 | dwarf_bool_name (die->child != NULL)); |
c906108c | 19705 | |
d97bc12b DE |
19706 | print_spaces (indent, f); |
19707 | fprintf_unfiltered (f, " attributes:\n"); | |
19708 | ||
c906108c SS |
19709 | for (i = 0; i < die->num_attrs; ++i) |
19710 | { | |
d97bc12b DE |
19711 | print_spaces (indent, f); |
19712 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
19713 | dwarf_attr_name (die->attrs[i].name), |
19714 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 19715 | |
c906108c SS |
19716 | switch (die->attrs[i].form) |
19717 | { | |
c906108c | 19718 | case DW_FORM_addr: |
3019eac3 | 19719 | case DW_FORM_GNU_addr_index: |
d97bc12b | 19720 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 19721 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
19722 | break; |
19723 | case DW_FORM_block2: | |
19724 | case DW_FORM_block4: | |
19725 | case DW_FORM_block: | |
19726 | case DW_FORM_block1: | |
56eb65bd SP |
19727 | fprintf_unfiltered (f, "block: size %s", |
19728 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 19729 | break; |
2dc7f7b3 | 19730 | case DW_FORM_exprloc: |
56eb65bd SP |
19731 | fprintf_unfiltered (f, "expression: size %s", |
19732 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 19733 | break; |
4568ecf9 DE |
19734 | case DW_FORM_ref_addr: |
19735 | fprintf_unfiltered (f, "ref address: "); | |
19736 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
19737 | break; | |
36586728 TT |
19738 | case DW_FORM_GNU_ref_alt: |
19739 | fprintf_unfiltered (f, "alt ref address: "); | |
19740 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
19741 | break; | |
10b3939b DJ |
19742 | case DW_FORM_ref1: |
19743 | case DW_FORM_ref2: | |
19744 | case DW_FORM_ref4: | |
4568ecf9 DE |
19745 | case DW_FORM_ref8: |
19746 | case DW_FORM_ref_udata: | |
d97bc12b | 19747 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 19748 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 19749 | break; |
c906108c SS |
19750 | case DW_FORM_data1: |
19751 | case DW_FORM_data2: | |
19752 | case DW_FORM_data4: | |
ce5d95e1 | 19753 | case DW_FORM_data8: |
c906108c SS |
19754 | case DW_FORM_udata: |
19755 | case DW_FORM_sdata: | |
43bbcdc2 PH |
19756 | fprintf_unfiltered (f, "constant: %s", |
19757 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 19758 | break; |
2dc7f7b3 TT |
19759 | case DW_FORM_sec_offset: |
19760 | fprintf_unfiltered (f, "section offset: %s", | |
19761 | pulongest (DW_UNSND (&die->attrs[i]))); | |
19762 | break; | |
55f1336d | 19763 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
19764 | fprintf_unfiltered (f, "signature: %s", |
19765 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 19766 | break; |
c906108c | 19767 | case DW_FORM_string: |
4bdf3d34 | 19768 | case DW_FORM_strp: |
3019eac3 | 19769 | case DW_FORM_GNU_str_index: |
36586728 | 19770 | case DW_FORM_GNU_strp_alt: |
8285870a | 19771 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 19772 | DW_STRING (&die->attrs[i]) |
8285870a JK |
19773 | ? DW_STRING (&die->attrs[i]) : "", |
19774 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
19775 | break; |
19776 | case DW_FORM_flag: | |
19777 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 19778 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 19779 | else |
d97bc12b | 19780 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 19781 | break; |
2dc7f7b3 TT |
19782 | case DW_FORM_flag_present: |
19783 | fprintf_unfiltered (f, "flag: TRUE"); | |
19784 | break; | |
a8329558 | 19785 | case DW_FORM_indirect: |
0963b4bd MS |
19786 | /* The reader will have reduced the indirect form to |
19787 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
19788 | fprintf_unfiltered (f, |
19789 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 19790 | break; |
c906108c | 19791 | default: |
d97bc12b | 19792 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 19793 | die->attrs[i].form); |
d97bc12b | 19794 | break; |
c906108c | 19795 | } |
d97bc12b | 19796 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
19797 | } |
19798 | } | |
19799 | ||
f9aca02d | 19800 | static void |
d97bc12b | 19801 | dump_die_for_error (struct die_info *die) |
c906108c | 19802 | { |
d97bc12b DE |
19803 | dump_die_shallow (gdb_stderr, 0, die); |
19804 | } | |
19805 | ||
19806 | static void | |
19807 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
19808 | { | |
19809 | int indent = level * 4; | |
19810 | ||
19811 | gdb_assert (die != NULL); | |
19812 | ||
19813 | if (level >= max_level) | |
19814 | return; | |
19815 | ||
19816 | dump_die_shallow (f, indent, die); | |
19817 | ||
19818 | if (die->child != NULL) | |
c906108c | 19819 | { |
d97bc12b DE |
19820 | print_spaces (indent, f); |
19821 | fprintf_unfiltered (f, " Children:"); | |
19822 | if (level + 1 < max_level) | |
19823 | { | |
19824 | fprintf_unfiltered (f, "\n"); | |
19825 | dump_die_1 (f, level + 1, max_level, die->child); | |
19826 | } | |
19827 | else | |
19828 | { | |
3e43a32a MS |
19829 | fprintf_unfiltered (f, |
19830 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
19831 | } |
19832 | } | |
19833 | ||
19834 | if (die->sibling != NULL && level > 0) | |
19835 | { | |
19836 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
19837 | } |
19838 | } | |
19839 | ||
d97bc12b DE |
19840 | /* This is called from the pdie macro in gdbinit.in. |
19841 | It's not static so gcc will keep a copy callable from gdb. */ | |
19842 | ||
19843 | void | |
19844 | dump_die (struct die_info *die, int max_level) | |
19845 | { | |
19846 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
19847 | } | |
19848 | ||
f9aca02d | 19849 | static void |
51545339 | 19850 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19851 | { |
51545339 | 19852 | void **slot; |
c906108c | 19853 | |
b64f50a1 JK |
19854 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
19855 | INSERT); | |
51545339 DJ |
19856 | |
19857 | *slot = die; | |
c906108c SS |
19858 | } |
19859 | ||
b64f50a1 JK |
19860 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
19861 | required kind. */ | |
19862 | ||
19863 | static sect_offset | |
ff39bb5e | 19864 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 19865 | { |
4568ecf9 | 19866 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 19867 | |
7771576e | 19868 | if (attr_form_is_ref (attr)) |
b64f50a1 | 19869 | return retval; |
93311388 | 19870 | |
b64f50a1 | 19871 | retval.sect_off = 0; |
93311388 DE |
19872 | complaint (&symfile_complaints, |
19873 | _("unsupported die ref attribute form: '%s'"), | |
19874 | dwarf_form_name (attr->form)); | |
b64f50a1 | 19875 | return retval; |
c906108c SS |
19876 | } |
19877 | ||
43bbcdc2 PH |
19878 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
19879 | * the value held by the attribute is not constant. */ | |
a02abb62 | 19880 | |
43bbcdc2 | 19881 | static LONGEST |
ff39bb5e | 19882 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 JB |
19883 | { |
19884 | if (attr->form == DW_FORM_sdata) | |
19885 | return DW_SND (attr); | |
19886 | else if (attr->form == DW_FORM_udata | |
19887 | || attr->form == DW_FORM_data1 | |
19888 | || attr->form == DW_FORM_data2 | |
19889 | || attr->form == DW_FORM_data4 | |
19890 | || attr->form == DW_FORM_data8) | |
19891 | return DW_UNSND (attr); | |
19892 | else | |
19893 | { | |
3e43a32a MS |
19894 | complaint (&symfile_complaints, |
19895 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
19896 | dwarf_form_name (attr->form)); |
19897 | return default_value; | |
19898 | } | |
19899 | } | |
19900 | ||
348e048f DE |
19901 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
19902 | On entry *REF_CU is the CU of SRC_DIE. | |
19903 | On exit *REF_CU is the CU of the result. */ | |
19904 | ||
19905 | static struct die_info * | |
ff39bb5e | 19906 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
19907 | struct dwarf2_cu **ref_cu) |
19908 | { | |
19909 | struct die_info *die; | |
19910 | ||
7771576e | 19911 | if (attr_form_is_ref (attr)) |
348e048f | 19912 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 19913 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
19914 | die = follow_die_sig (src_die, attr, ref_cu); |
19915 | else | |
19916 | { | |
19917 | dump_die_for_error (src_die); | |
19918 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 19919 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
19920 | } |
19921 | ||
19922 | return die; | |
03dd20cc DJ |
19923 | } |
19924 | ||
5c631832 | 19925 | /* Follow reference OFFSET. |
673bfd45 DE |
19926 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
19927 | On exit *REF_CU is the CU of the result. | |
19928 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 19929 | |
f9aca02d | 19930 | static struct die_info * |
36586728 TT |
19931 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
19932 | struct dwarf2_cu **ref_cu) | |
c906108c | 19933 | { |
10b3939b | 19934 | struct die_info temp_die; |
f2f0e013 | 19935 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 19936 | |
348e048f DE |
19937 | gdb_assert (cu->per_cu != NULL); |
19938 | ||
98bfdba5 PA |
19939 | target_cu = cu; |
19940 | ||
3019eac3 | 19941 | if (cu->per_cu->is_debug_types) |
348e048f DE |
19942 | { |
19943 | /* .debug_types CUs cannot reference anything outside their CU. | |
19944 | If they need to, they have to reference a signatured type via | |
55f1336d | 19945 | DW_FORM_ref_sig8. */ |
348e048f | 19946 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 19947 | return NULL; |
348e048f | 19948 | } |
36586728 TT |
19949 | else if (offset_in_dwz != cu->per_cu->is_dwz |
19950 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
19951 | { |
19952 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 19953 | |
36586728 TT |
19954 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
19955 | cu->objfile); | |
03dd20cc DJ |
19956 | |
19957 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
19958 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
19959 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 19960 | |
10b3939b DJ |
19961 | target_cu = per_cu->cu; |
19962 | } | |
98bfdba5 PA |
19963 | else if (cu->dies == NULL) |
19964 | { | |
19965 | /* We're loading full DIEs during partial symbol reading. */ | |
19966 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 19967 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 19968 | } |
c906108c | 19969 | |
f2f0e013 | 19970 | *ref_cu = target_cu; |
51545339 | 19971 | temp_die.offset = offset; |
b64f50a1 | 19972 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 19973 | } |
10b3939b | 19974 | |
5c631832 JK |
19975 | /* Follow reference attribute ATTR of SRC_DIE. |
19976 | On entry *REF_CU is the CU of SRC_DIE. | |
19977 | On exit *REF_CU is the CU of the result. */ | |
19978 | ||
19979 | static struct die_info * | |
ff39bb5e | 19980 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
19981 | struct dwarf2_cu **ref_cu) |
19982 | { | |
b64f50a1 | 19983 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
19984 | struct dwarf2_cu *cu = *ref_cu; |
19985 | struct die_info *die; | |
19986 | ||
36586728 TT |
19987 | die = follow_die_offset (offset, |
19988 | (attr->form == DW_FORM_GNU_ref_alt | |
19989 | || cu->per_cu->is_dwz), | |
19990 | ref_cu); | |
5c631832 JK |
19991 | if (!die) |
19992 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
19993 | "at 0x%x [in module %s]"), | |
4262abfb JK |
19994 | offset.sect_off, src_die->offset.sect_off, |
19995 | objfile_name (cu->objfile)); | |
348e048f | 19996 | |
5c631832 JK |
19997 | return die; |
19998 | } | |
19999 | ||
d83e736b JK |
20000 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
20001 | Returned value is intended for DW_OP_call*. Returned | |
20002 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
20003 | |
20004 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
20005 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
20006 | struct dwarf2_per_cu_data *per_cu, | |
20007 | CORE_ADDR (*get_frame_pc) (void *baton), | |
20008 | void *baton) | |
5c631832 | 20009 | { |
918dd910 | 20010 | struct dwarf2_cu *cu; |
5c631832 JK |
20011 | struct die_info *die; |
20012 | struct attribute *attr; | |
20013 | struct dwarf2_locexpr_baton retval; | |
20014 | ||
8cf6f0b1 TT |
20015 | dw2_setup (per_cu->objfile); |
20016 | ||
918dd910 JK |
20017 | if (per_cu->cu == NULL) |
20018 | load_cu (per_cu); | |
20019 | cu = per_cu->cu; | |
20020 | ||
36586728 | 20021 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
20022 | if (!die) |
20023 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 20024 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
20025 | |
20026 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
20027 | if (!attr) | |
20028 | { | |
e103e986 JK |
20029 | /* DWARF: "If there is no such attribute, then there is no effect.". |
20030 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 20031 | |
e103e986 | 20032 | retval.data = NULL; |
5c631832 JK |
20033 | retval.size = 0; |
20034 | } | |
8cf6f0b1 TT |
20035 | else if (attr_form_is_section_offset (attr)) |
20036 | { | |
20037 | struct dwarf2_loclist_baton loclist_baton; | |
20038 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
20039 | size_t size; | |
20040 | ||
20041 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
20042 | ||
20043 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
20044 | &size, pc); | |
20045 | retval.size = size; | |
20046 | } | |
5c631832 JK |
20047 | else |
20048 | { | |
20049 | if (!attr_form_is_block (attr)) | |
20050 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
20051 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
4262abfb | 20052 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
20053 | |
20054 | retval.data = DW_BLOCK (attr)->data; | |
20055 | retval.size = DW_BLOCK (attr)->size; | |
20056 | } | |
20057 | retval.per_cu = cu->per_cu; | |
918dd910 | 20058 | |
918dd910 JK |
20059 | age_cached_comp_units (); |
20060 | ||
5c631832 | 20061 | return retval; |
348e048f DE |
20062 | } |
20063 | ||
8b9737bf TT |
20064 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
20065 | offset. */ | |
20066 | ||
20067 | struct dwarf2_locexpr_baton | |
20068 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
20069 | struct dwarf2_per_cu_data *per_cu, | |
20070 | CORE_ADDR (*get_frame_pc) (void *baton), | |
20071 | void *baton) | |
20072 | { | |
20073 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
20074 | ||
20075 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
20076 | } | |
20077 | ||
b6807d98 TT |
20078 | /* Write a constant of a given type as target-ordered bytes into |
20079 | OBSTACK. */ | |
20080 | ||
20081 | static const gdb_byte * | |
20082 | write_constant_as_bytes (struct obstack *obstack, | |
20083 | enum bfd_endian byte_order, | |
20084 | struct type *type, | |
20085 | ULONGEST value, | |
20086 | LONGEST *len) | |
20087 | { | |
20088 | gdb_byte *result; | |
20089 | ||
20090 | *len = TYPE_LENGTH (type); | |
20091 | result = obstack_alloc (obstack, *len); | |
20092 | store_unsigned_integer (result, *len, byte_order, value); | |
20093 | ||
20094 | return result; | |
20095 | } | |
20096 | ||
20097 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
20098 | pointer to the constant bytes and set LEN to the length of the | |
20099 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
20100 | does not have a DW_AT_const_value, return NULL. */ | |
20101 | ||
20102 | const gdb_byte * | |
20103 | dwarf2_fetch_constant_bytes (sect_offset offset, | |
20104 | struct dwarf2_per_cu_data *per_cu, | |
20105 | struct obstack *obstack, | |
20106 | LONGEST *len) | |
20107 | { | |
20108 | struct dwarf2_cu *cu; | |
20109 | struct die_info *die; | |
20110 | struct attribute *attr; | |
20111 | const gdb_byte *result = NULL; | |
20112 | struct type *type; | |
20113 | LONGEST value; | |
20114 | enum bfd_endian byte_order; | |
20115 | ||
20116 | dw2_setup (per_cu->objfile); | |
20117 | ||
20118 | if (per_cu->cu == NULL) | |
20119 | load_cu (per_cu); | |
20120 | cu = per_cu->cu; | |
20121 | ||
20122 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); | |
20123 | if (!die) | |
20124 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 20125 | offset.sect_off, objfile_name (per_cu->objfile)); |
b6807d98 TT |
20126 | |
20127 | ||
20128 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
20129 | if (attr == NULL) | |
20130 | return NULL; | |
20131 | ||
20132 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
20133 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
20134 | ||
20135 | switch (attr->form) | |
20136 | { | |
20137 | case DW_FORM_addr: | |
20138 | case DW_FORM_GNU_addr_index: | |
20139 | { | |
20140 | gdb_byte *tem; | |
20141 | ||
20142 | *len = cu->header.addr_size; | |
20143 | tem = obstack_alloc (obstack, *len); | |
20144 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); | |
20145 | result = tem; | |
20146 | } | |
20147 | break; | |
20148 | case DW_FORM_string: | |
20149 | case DW_FORM_strp: | |
20150 | case DW_FORM_GNU_str_index: | |
20151 | case DW_FORM_GNU_strp_alt: | |
20152 | /* DW_STRING is already allocated on the objfile obstack, point | |
20153 | directly to it. */ | |
20154 | result = (const gdb_byte *) DW_STRING (attr); | |
20155 | *len = strlen (DW_STRING (attr)); | |
20156 | break; | |
20157 | case DW_FORM_block1: | |
20158 | case DW_FORM_block2: | |
20159 | case DW_FORM_block4: | |
20160 | case DW_FORM_block: | |
20161 | case DW_FORM_exprloc: | |
20162 | result = DW_BLOCK (attr)->data; | |
20163 | *len = DW_BLOCK (attr)->size; | |
20164 | break; | |
20165 | ||
20166 | /* The DW_AT_const_value attributes are supposed to carry the | |
20167 | symbol's value "represented as it would be on the target | |
20168 | architecture." By the time we get here, it's already been | |
20169 | converted to host endianness, so we just need to sign- or | |
20170 | zero-extend it as appropriate. */ | |
20171 | case DW_FORM_data1: | |
20172 | type = die_type (die, cu); | |
20173 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
20174 | if (result == NULL) | |
20175 | result = write_constant_as_bytes (obstack, byte_order, | |
20176 | type, value, len); | |
20177 | break; | |
20178 | case DW_FORM_data2: | |
20179 | type = die_type (die, cu); | |
20180 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
20181 | if (result == NULL) | |
20182 | result = write_constant_as_bytes (obstack, byte_order, | |
20183 | type, value, len); | |
20184 | break; | |
20185 | case DW_FORM_data4: | |
20186 | type = die_type (die, cu); | |
20187 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
20188 | if (result == NULL) | |
20189 | result = write_constant_as_bytes (obstack, byte_order, | |
20190 | type, value, len); | |
20191 | break; | |
20192 | case DW_FORM_data8: | |
20193 | type = die_type (die, cu); | |
20194 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
20195 | if (result == NULL) | |
20196 | result = write_constant_as_bytes (obstack, byte_order, | |
20197 | type, value, len); | |
20198 | break; | |
20199 | ||
20200 | case DW_FORM_sdata: | |
20201 | type = die_type (die, cu); | |
20202 | result = write_constant_as_bytes (obstack, byte_order, | |
20203 | type, DW_SND (attr), len); | |
20204 | break; | |
20205 | ||
20206 | case DW_FORM_udata: | |
20207 | type = die_type (die, cu); | |
20208 | result = write_constant_as_bytes (obstack, byte_order, | |
20209 | type, DW_UNSND (attr), len); | |
20210 | break; | |
20211 | ||
20212 | default: | |
20213 | complaint (&symfile_complaints, | |
20214 | _("unsupported const value attribute form: '%s'"), | |
20215 | dwarf_form_name (attr->form)); | |
20216 | break; | |
20217 | } | |
20218 | ||
20219 | return result; | |
20220 | } | |
20221 | ||
8a9b8146 TT |
20222 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
20223 | PER_CU. */ | |
20224 | ||
20225 | struct type * | |
b64f50a1 | 20226 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
20227 | struct dwarf2_per_cu_data *per_cu) |
20228 | { | |
b64f50a1 JK |
20229 | sect_offset die_offset_sect; |
20230 | ||
8a9b8146 | 20231 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
20232 | |
20233 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
20234 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
20235 | } |
20236 | ||
ac9ec31b | 20237 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 20238 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
20239 | On exit *REF_CU is the CU of the result. |
20240 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
20241 | |
20242 | static struct die_info * | |
ac9ec31b DE |
20243 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
20244 | struct dwarf2_cu **ref_cu) | |
348e048f DE |
20245 | { |
20246 | struct objfile *objfile = (*ref_cu)->objfile; | |
20247 | struct die_info temp_die; | |
348e048f DE |
20248 | struct dwarf2_cu *sig_cu; |
20249 | struct die_info *die; | |
20250 | ||
ac9ec31b DE |
20251 | /* While it might be nice to assert sig_type->type == NULL here, |
20252 | we can get here for DW_AT_imported_declaration where we need | |
20253 | the DIE not the type. */ | |
348e048f DE |
20254 | |
20255 | /* If necessary, add it to the queue and load its DIEs. */ | |
20256 | ||
95554aad | 20257 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 20258 | read_signatured_type (sig_type); |
348e048f | 20259 | |
348e048f | 20260 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 20261 | gdb_assert (sig_cu != NULL); |
3019eac3 DE |
20262 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
20263 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
20264 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
20265 | temp_die.offset.sect_off); | |
348e048f DE |
20266 | if (die) |
20267 | { | |
796a7ff8 DE |
20268 | /* For .gdb_index version 7 keep track of included TUs. |
20269 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
20270 | if (dwarf2_per_objfile->index_table != NULL | |
20271 | && dwarf2_per_objfile->index_table->version <= 7) | |
20272 | { | |
20273 | VEC_safe_push (dwarf2_per_cu_ptr, | |
20274 | (*ref_cu)->per_cu->imported_symtabs, | |
20275 | sig_cu->per_cu); | |
20276 | } | |
20277 | ||
348e048f DE |
20278 | *ref_cu = sig_cu; |
20279 | return die; | |
20280 | } | |
20281 | ||
ac9ec31b DE |
20282 | return NULL; |
20283 | } | |
20284 | ||
20285 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
20286 | On entry *REF_CU is the CU of SRC_DIE. | |
20287 | On exit *REF_CU is the CU of the result. | |
20288 | The result is the DIE of the type. | |
20289 | If the referenced type cannot be found an error is thrown. */ | |
20290 | ||
20291 | static struct die_info * | |
ff39bb5e | 20292 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
20293 | struct dwarf2_cu **ref_cu) |
20294 | { | |
20295 | ULONGEST signature = DW_SIGNATURE (attr); | |
20296 | struct signatured_type *sig_type; | |
20297 | struct die_info *die; | |
20298 | ||
20299 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
20300 | ||
a2ce51a0 | 20301 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
20302 | /* sig_type will be NULL if the signatured type is missing from |
20303 | the debug info. */ | |
20304 | if (sig_type == NULL) | |
20305 | { | |
20306 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20307 | " from DIE at 0x%x [in module %s]"), | |
20308 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20309 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20310 | } |
20311 | ||
20312 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
20313 | if (die == NULL) | |
20314 | { | |
20315 | dump_die_for_error (src_die); | |
20316 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20317 | " from DIE at 0x%x [in module %s]"), | |
20318 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20319 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20320 | } |
20321 | ||
20322 | return die; | |
20323 | } | |
20324 | ||
20325 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
20326 | reading in and processing the type unit if necessary. */ | |
20327 | ||
20328 | static struct type * | |
20329 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
20330 | struct dwarf2_cu *cu) | |
20331 | { | |
20332 | struct signatured_type *sig_type; | |
20333 | struct dwarf2_cu *type_cu; | |
20334 | struct die_info *type_die; | |
20335 | struct type *type; | |
20336 | ||
a2ce51a0 | 20337 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
20338 | /* sig_type will be NULL if the signatured type is missing from |
20339 | the debug info. */ | |
20340 | if (sig_type == NULL) | |
20341 | { | |
20342 | complaint (&symfile_complaints, | |
20343 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20344 | " from DIE at 0x%x [in module %s]"), | |
20345 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20346 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20347 | return build_error_marker_type (cu, die); |
20348 | } | |
20349 | ||
20350 | /* If we already know the type we're done. */ | |
20351 | if (sig_type->type != NULL) | |
20352 | return sig_type->type; | |
20353 | ||
20354 | type_cu = cu; | |
20355 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
20356 | if (type_die != NULL) | |
20357 | { | |
20358 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
20359 | is created. This is important, for example, because for c++ classes | |
20360 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
20361 | type = read_type_die (type_die, type_cu); | |
20362 | if (type == NULL) | |
20363 | { | |
20364 | complaint (&symfile_complaints, | |
20365 | _("Dwarf Error: Cannot build signatured type %s" | |
20366 | " referenced from DIE at 0x%x [in module %s]"), | |
20367 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20368 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20369 | type = build_error_marker_type (cu, die); |
20370 | } | |
20371 | } | |
20372 | else | |
20373 | { | |
20374 | complaint (&symfile_complaints, | |
20375 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20376 | " from DIE at 0x%x [in module %s]"), | |
20377 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20378 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20379 | type = build_error_marker_type (cu, die); |
20380 | } | |
20381 | sig_type->type = type; | |
20382 | ||
20383 | return type; | |
20384 | } | |
20385 | ||
20386 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
20387 | reading in and processing the type unit if necessary. */ | |
20388 | ||
20389 | static struct type * | |
ff39bb5e | 20390 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 20391 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
20392 | { |
20393 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 20394 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
20395 | { |
20396 | struct dwarf2_cu *type_cu = cu; | |
20397 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
20398 | ||
20399 | return read_type_die (type_die, type_cu); | |
20400 | } | |
20401 | else if (attr->form == DW_FORM_ref_sig8) | |
20402 | { | |
20403 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
20404 | } | |
20405 | else | |
20406 | { | |
20407 | complaint (&symfile_complaints, | |
20408 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
20409 | " at 0x%x [in module %s]"), | |
20410 | dwarf_form_name (attr->form), die->offset.sect_off, | |
4262abfb | 20411 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20412 | return build_error_marker_type (cu, die); |
20413 | } | |
348e048f DE |
20414 | } |
20415 | ||
e5fe5e75 | 20416 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
20417 | |
20418 | static void | |
e5fe5e75 | 20419 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 20420 | { |
52dc124a | 20421 | struct signatured_type *sig_type; |
348e048f | 20422 | |
f4dc4d17 DE |
20423 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
20424 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
20425 | ||
6721b2ec DE |
20426 | /* We have the per_cu, but we need the signatured_type. |
20427 | Fortunately this is an easy translation. */ | |
20428 | gdb_assert (per_cu->is_debug_types); | |
20429 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 20430 | |
6721b2ec | 20431 | gdb_assert (per_cu->cu == NULL); |
348e048f | 20432 | |
52dc124a | 20433 | read_signatured_type (sig_type); |
348e048f | 20434 | |
6721b2ec | 20435 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
20436 | } |
20437 | ||
dee91e82 DE |
20438 | /* die_reader_func for read_signatured_type. |
20439 | This is identical to load_full_comp_unit_reader, | |
20440 | but is kept separate for now. */ | |
348e048f DE |
20441 | |
20442 | static void | |
dee91e82 | 20443 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 20444 | const gdb_byte *info_ptr, |
dee91e82 DE |
20445 | struct die_info *comp_unit_die, |
20446 | int has_children, | |
20447 | void *data) | |
348e048f | 20448 | { |
dee91e82 | 20449 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 20450 | |
dee91e82 DE |
20451 | gdb_assert (cu->die_hash == NULL); |
20452 | cu->die_hash = | |
20453 | htab_create_alloc_ex (cu->header.length / 12, | |
20454 | die_hash, | |
20455 | die_eq, | |
20456 | NULL, | |
20457 | &cu->comp_unit_obstack, | |
20458 | hashtab_obstack_allocate, | |
20459 | dummy_obstack_deallocate); | |
348e048f | 20460 | |
dee91e82 DE |
20461 | if (has_children) |
20462 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
20463 | &info_ptr, comp_unit_die); | |
20464 | cu->dies = comp_unit_die; | |
20465 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
20466 | |
20467 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 20468 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 20469 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
20470 | or we won't be able to build types correctly. |
20471 | Similarly, if we do not read the producer, we can not apply | |
20472 | producer-specific interpretation. */ | |
95554aad | 20473 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 20474 | } |
348e048f | 20475 | |
3019eac3 DE |
20476 | /* Read in a signatured type and build its CU and DIEs. |
20477 | If the type is a stub for the real type in a DWO file, | |
20478 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
20479 | |
20480 | static void | |
20481 | read_signatured_type (struct signatured_type *sig_type) | |
20482 | { | |
20483 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 20484 | |
3019eac3 | 20485 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 20486 | gdb_assert (per_cu->cu == NULL); |
348e048f | 20487 | |
f4dc4d17 DE |
20488 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
20489 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 20490 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
20491 | } |
20492 | ||
c906108c SS |
20493 | /* Decode simple location descriptions. |
20494 | Given a pointer to a dwarf block that defines a location, compute | |
20495 | the location and return the value. | |
20496 | ||
4cecd739 DJ |
20497 | NOTE drow/2003-11-18: This function is called in two situations |
20498 | now: for the address of static or global variables (partial symbols | |
20499 | only) and for offsets into structures which are expected to be | |
20500 | (more or less) constant. The partial symbol case should go away, | |
20501 | and only the constant case should remain. That will let this | |
20502 | function complain more accurately. A few special modes are allowed | |
20503 | without complaint for global variables (for instance, global | |
20504 | register values and thread-local values). | |
c906108c SS |
20505 | |
20506 | A location description containing no operations indicates that the | |
4cecd739 | 20507 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
20508 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
20509 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
20510 | complaint. |
20511 | ||
20512 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
20513 | |
20514 | static CORE_ADDR | |
e7c27a73 | 20515 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 20516 | { |
e7c27a73 | 20517 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
20518 | size_t i; |
20519 | size_t size = blk->size; | |
d521ce57 | 20520 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
20521 | CORE_ADDR stack[64]; |
20522 | int stacki; | |
20523 | unsigned int bytes_read, unsnd; | |
20524 | gdb_byte op; | |
c906108c | 20525 | |
21ae7a4d JK |
20526 | i = 0; |
20527 | stacki = 0; | |
20528 | stack[stacki] = 0; | |
20529 | stack[++stacki] = 0; | |
20530 | ||
20531 | while (i < size) | |
20532 | { | |
20533 | op = data[i++]; | |
20534 | switch (op) | |
20535 | { | |
20536 | case DW_OP_lit0: | |
20537 | case DW_OP_lit1: | |
20538 | case DW_OP_lit2: | |
20539 | case DW_OP_lit3: | |
20540 | case DW_OP_lit4: | |
20541 | case DW_OP_lit5: | |
20542 | case DW_OP_lit6: | |
20543 | case DW_OP_lit7: | |
20544 | case DW_OP_lit8: | |
20545 | case DW_OP_lit9: | |
20546 | case DW_OP_lit10: | |
20547 | case DW_OP_lit11: | |
20548 | case DW_OP_lit12: | |
20549 | case DW_OP_lit13: | |
20550 | case DW_OP_lit14: | |
20551 | case DW_OP_lit15: | |
20552 | case DW_OP_lit16: | |
20553 | case DW_OP_lit17: | |
20554 | case DW_OP_lit18: | |
20555 | case DW_OP_lit19: | |
20556 | case DW_OP_lit20: | |
20557 | case DW_OP_lit21: | |
20558 | case DW_OP_lit22: | |
20559 | case DW_OP_lit23: | |
20560 | case DW_OP_lit24: | |
20561 | case DW_OP_lit25: | |
20562 | case DW_OP_lit26: | |
20563 | case DW_OP_lit27: | |
20564 | case DW_OP_lit28: | |
20565 | case DW_OP_lit29: | |
20566 | case DW_OP_lit30: | |
20567 | case DW_OP_lit31: | |
20568 | stack[++stacki] = op - DW_OP_lit0; | |
20569 | break; | |
f1bea926 | 20570 | |
21ae7a4d JK |
20571 | case DW_OP_reg0: |
20572 | case DW_OP_reg1: | |
20573 | case DW_OP_reg2: | |
20574 | case DW_OP_reg3: | |
20575 | case DW_OP_reg4: | |
20576 | case DW_OP_reg5: | |
20577 | case DW_OP_reg6: | |
20578 | case DW_OP_reg7: | |
20579 | case DW_OP_reg8: | |
20580 | case DW_OP_reg9: | |
20581 | case DW_OP_reg10: | |
20582 | case DW_OP_reg11: | |
20583 | case DW_OP_reg12: | |
20584 | case DW_OP_reg13: | |
20585 | case DW_OP_reg14: | |
20586 | case DW_OP_reg15: | |
20587 | case DW_OP_reg16: | |
20588 | case DW_OP_reg17: | |
20589 | case DW_OP_reg18: | |
20590 | case DW_OP_reg19: | |
20591 | case DW_OP_reg20: | |
20592 | case DW_OP_reg21: | |
20593 | case DW_OP_reg22: | |
20594 | case DW_OP_reg23: | |
20595 | case DW_OP_reg24: | |
20596 | case DW_OP_reg25: | |
20597 | case DW_OP_reg26: | |
20598 | case DW_OP_reg27: | |
20599 | case DW_OP_reg28: | |
20600 | case DW_OP_reg29: | |
20601 | case DW_OP_reg30: | |
20602 | case DW_OP_reg31: | |
20603 | stack[++stacki] = op - DW_OP_reg0; | |
20604 | if (i < size) | |
20605 | dwarf2_complex_location_expr_complaint (); | |
20606 | break; | |
c906108c | 20607 | |
21ae7a4d JK |
20608 | case DW_OP_regx: |
20609 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
20610 | i += bytes_read; | |
20611 | stack[++stacki] = unsnd; | |
20612 | if (i < size) | |
20613 | dwarf2_complex_location_expr_complaint (); | |
20614 | break; | |
c906108c | 20615 | |
21ae7a4d JK |
20616 | case DW_OP_addr: |
20617 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
20618 | cu, &bytes_read); | |
20619 | i += bytes_read; | |
20620 | break; | |
d53d4ac5 | 20621 | |
21ae7a4d JK |
20622 | case DW_OP_const1u: |
20623 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
20624 | i += 1; | |
20625 | break; | |
20626 | ||
20627 | case DW_OP_const1s: | |
20628 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
20629 | i += 1; | |
20630 | break; | |
20631 | ||
20632 | case DW_OP_const2u: | |
20633 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
20634 | i += 2; | |
20635 | break; | |
20636 | ||
20637 | case DW_OP_const2s: | |
20638 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
20639 | i += 2; | |
20640 | break; | |
d53d4ac5 | 20641 | |
21ae7a4d JK |
20642 | case DW_OP_const4u: |
20643 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
20644 | i += 4; | |
20645 | break; | |
20646 | ||
20647 | case DW_OP_const4s: | |
20648 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
20649 | i += 4; | |
20650 | break; | |
20651 | ||
585861ea JK |
20652 | case DW_OP_const8u: |
20653 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
20654 | i += 8; | |
20655 | break; | |
20656 | ||
21ae7a4d JK |
20657 | case DW_OP_constu: |
20658 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
20659 | &bytes_read); | |
20660 | i += bytes_read; | |
20661 | break; | |
20662 | ||
20663 | case DW_OP_consts: | |
20664 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
20665 | i += bytes_read; | |
20666 | break; | |
20667 | ||
20668 | case DW_OP_dup: | |
20669 | stack[stacki + 1] = stack[stacki]; | |
20670 | stacki++; | |
20671 | break; | |
20672 | ||
20673 | case DW_OP_plus: | |
20674 | stack[stacki - 1] += stack[stacki]; | |
20675 | stacki--; | |
20676 | break; | |
20677 | ||
20678 | case DW_OP_plus_uconst: | |
20679 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
20680 | &bytes_read); | |
20681 | i += bytes_read; | |
20682 | break; | |
20683 | ||
20684 | case DW_OP_minus: | |
20685 | stack[stacki - 1] -= stack[stacki]; | |
20686 | stacki--; | |
20687 | break; | |
20688 | ||
20689 | case DW_OP_deref: | |
20690 | /* If we're not the last op, then we definitely can't encode | |
20691 | this using GDB's address_class enum. This is valid for partial | |
20692 | global symbols, although the variable's address will be bogus | |
20693 | in the psymtab. */ | |
20694 | if (i < size) | |
20695 | dwarf2_complex_location_expr_complaint (); | |
20696 | break; | |
20697 | ||
20698 | case DW_OP_GNU_push_tls_address: | |
20699 | /* The top of the stack has the offset from the beginning | |
20700 | of the thread control block at which the variable is located. */ | |
20701 | /* Nothing should follow this operator, so the top of stack would | |
20702 | be returned. */ | |
20703 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
20704 | address will be bogus in the psymtab. Make it always at least |
20705 | non-zero to not look as a variable garbage collected by linker | |
20706 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
20707 | if (i < size) |
20708 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 20709 | stack[stacki]++; |
21ae7a4d JK |
20710 | break; |
20711 | ||
20712 | case DW_OP_GNU_uninit: | |
20713 | break; | |
20714 | ||
3019eac3 | 20715 | case DW_OP_GNU_addr_index: |
49f6c839 | 20716 | case DW_OP_GNU_const_index: |
3019eac3 DE |
20717 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
20718 | &bytes_read); | |
20719 | i += bytes_read; | |
20720 | break; | |
20721 | ||
21ae7a4d JK |
20722 | default: |
20723 | { | |
f39c6ffd | 20724 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
20725 | |
20726 | if (name) | |
20727 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
20728 | name); | |
20729 | else | |
20730 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
20731 | op); | |
20732 | } | |
20733 | ||
20734 | return (stack[stacki]); | |
d53d4ac5 | 20735 | } |
3c6e0cb3 | 20736 | |
21ae7a4d JK |
20737 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
20738 | outside of the allocated space. Also enforce minimum>0. */ | |
20739 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
20740 | { | |
20741 | complaint (&symfile_complaints, | |
20742 | _("location description stack overflow")); | |
20743 | return 0; | |
20744 | } | |
20745 | ||
20746 | if (stacki <= 0) | |
20747 | { | |
20748 | complaint (&symfile_complaints, | |
20749 | _("location description stack underflow")); | |
20750 | return 0; | |
20751 | } | |
20752 | } | |
20753 | return (stack[stacki]); | |
c906108c SS |
20754 | } |
20755 | ||
20756 | /* memory allocation interface */ | |
20757 | ||
c906108c | 20758 | static struct dwarf_block * |
7b5a2f43 | 20759 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
20760 | { |
20761 | struct dwarf_block *blk; | |
20762 | ||
20763 | blk = (struct dwarf_block *) | |
7b5a2f43 | 20764 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
20765 | return (blk); |
20766 | } | |
20767 | ||
c906108c | 20768 | static struct die_info * |
b60c80d6 | 20769 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
20770 | { |
20771 | struct die_info *die; | |
b60c80d6 DJ |
20772 | size_t size = sizeof (struct die_info); |
20773 | ||
20774 | if (num_attrs > 1) | |
20775 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 20776 | |
b60c80d6 | 20777 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
20778 | memset (die, 0, sizeof (struct die_info)); |
20779 | return (die); | |
20780 | } | |
2e276125 JB |
20781 | |
20782 | \f | |
20783 | /* Macro support. */ | |
20784 | ||
233d95b5 JK |
20785 | /* Return file name relative to the compilation directory of file number I in |
20786 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 20787 | responsible for freeing it. */ |
233d95b5 | 20788 | |
2e276125 | 20789 | static char * |
233d95b5 | 20790 | file_file_name (int file, struct line_header *lh) |
2e276125 | 20791 | { |
6a83a1e6 EZ |
20792 | /* Is the file number a valid index into the line header's file name |
20793 | table? Remember that file numbers start with one, not zero. */ | |
20794 | if (1 <= file && file <= lh->num_file_names) | |
20795 | { | |
20796 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 20797 | |
afa6c9ab SL |
20798 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0 |
20799 | || lh->include_dirs == NULL) | |
6a83a1e6 | 20800 | return xstrdup (fe->name); |
233d95b5 JK |
20801 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
20802 | fe->name, NULL); | |
6a83a1e6 | 20803 | } |
2e276125 JB |
20804 | else |
20805 | { | |
6a83a1e6 EZ |
20806 | /* The compiler produced a bogus file number. We can at least |
20807 | record the macro definitions made in the file, even if we | |
20808 | won't be able to find the file by name. */ | |
20809 | char fake_name[80]; | |
9a619af0 | 20810 | |
8c042590 PM |
20811 | xsnprintf (fake_name, sizeof (fake_name), |
20812 | "<bad macro file number %d>", file); | |
2e276125 | 20813 | |
6e70227d | 20814 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
20815 | _("bad file number in macro information (%d)"), |
20816 | file); | |
2e276125 | 20817 | |
6a83a1e6 | 20818 | return xstrdup (fake_name); |
2e276125 JB |
20819 | } |
20820 | } | |
20821 | ||
233d95b5 JK |
20822 | /* Return the full name of file number I in *LH's file name table. |
20823 | Use COMP_DIR as the name of the current directory of the | |
20824 | compilation. The result is allocated using xmalloc; the caller is | |
20825 | responsible for freeing it. */ | |
20826 | static char * | |
20827 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
20828 | { | |
20829 | /* Is the file number a valid index into the line header's file name | |
20830 | table? Remember that file numbers start with one, not zero. */ | |
20831 | if (1 <= file && file <= lh->num_file_names) | |
20832 | { | |
20833 | char *relative = file_file_name (file, lh); | |
20834 | ||
20835 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
20836 | return relative; | |
20837 | return reconcat (relative, comp_dir, SLASH_STRING, relative, NULL); | |
20838 | } | |
20839 | else | |
20840 | return file_file_name (file, lh); | |
20841 | } | |
20842 | ||
2e276125 JB |
20843 | |
20844 | static struct macro_source_file * | |
20845 | macro_start_file (int file, int line, | |
20846 | struct macro_source_file *current_file, | |
43f3e411 | 20847 | struct line_header *lh) |
2e276125 | 20848 | { |
233d95b5 JK |
20849 | /* File name relative to the compilation directory of this source file. */ |
20850 | char *file_name = file_file_name (file, lh); | |
2e276125 | 20851 | |
2e276125 | 20852 | if (! current_file) |
abc9d0dc | 20853 | { |
fc474241 DE |
20854 | /* Note: We don't create a macro table for this compilation unit |
20855 | at all until we actually get a filename. */ | |
43f3e411 | 20856 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 20857 | |
abc9d0dc TT |
20858 | /* If we have no current file, then this must be the start_file |
20859 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
20860 | current_file = macro_set_main (macro_table, file_name); |
20861 | macro_define_special (macro_table); | |
abc9d0dc | 20862 | } |
2e276125 | 20863 | else |
233d95b5 | 20864 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 20865 | |
233d95b5 | 20866 | xfree (file_name); |
6e70227d | 20867 | |
2e276125 JB |
20868 | return current_file; |
20869 | } | |
20870 | ||
20871 | ||
20872 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
20873 | followed by a null byte. */ | |
20874 | static char * | |
20875 | copy_string (const char *buf, int len) | |
20876 | { | |
20877 | char *s = xmalloc (len + 1); | |
9a619af0 | 20878 | |
2e276125 JB |
20879 | memcpy (s, buf, len); |
20880 | s[len] = '\0'; | |
2e276125 JB |
20881 | return s; |
20882 | } | |
20883 | ||
20884 | ||
20885 | static const char * | |
20886 | consume_improper_spaces (const char *p, const char *body) | |
20887 | { | |
20888 | if (*p == ' ') | |
20889 | { | |
4d3c2250 | 20890 | complaint (&symfile_complaints, |
3e43a32a MS |
20891 | _("macro definition contains spaces " |
20892 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 20893 | body); |
2e276125 JB |
20894 | |
20895 | while (*p == ' ') | |
20896 | p++; | |
20897 | } | |
20898 | ||
20899 | return p; | |
20900 | } | |
20901 | ||
20902 | ||
20903 | static void | |
20904 | parse_macro_definition (struct macro_source_file *file, int line, | |
20905 | const char *body) | |
20906 | { | |
20907 | const char *p; | |
20908 | ||
20909 | /* The body string takes one of two forms. For object-like macro | |
20910 | definitions, it should be: | |
20911 | ||
20912 | <macro name> " " <definition> | |
20913 | ||
20914 | For function-like macro definitions, it should be: | |
20915 | ||
20916 | <macro name> "() " <definition> | |
20917 | or | |
20918 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
20919 | ||
20920 | Spaces may appear only where explicitly indicated, and in the | |
20921 | <definition>. | |
20922 | ||
20923 | The Dwarf 2 spec says that an object-like macro's name is always | |
20924 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 20925 | the space when the macro's definition is the empty string. |
2e276125 JB |
20926 | |
20927 | The Dwarf 2 spec says that there should be no spaces between the | |
20928 | formal arguments in a function-like macro's formal argument list, | |
20929 | but versions of GCC around March 2002 include spaces after the | |
20930 | commas. */ | |
20931 | ||
20932 | ||
20933 | /* Find the extent of the macro name. The macro name is terminated | |
20934 | by either a space or null character (for an object-like macro) or | |
20935 | an opening paren (for a function-like macro). */ | |
20936 | for (p = body; *p; p++) | |
20937 | if (*p == ' ' || *p == '(') | |
20938 | break; | |
20939 | ||
20940 | if (*p == ' ' || *p == '\0') | |
20941 | { | |
20942 | /* It's an object-like macro. */ | |
20943 | int name_len = p - body; | |
20944 | char *name = copy_string (body, name_len); | |
20945 | const char *replacement; | |
20946 | ||
20947 | if (*p == ' ') | |
20948 | replacement = body + name_len + 1; | |
20949 | else | |
20950 | { | |
4d3c2250 | 20951 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20952 | replacement = body + name_len; |
20953 | } | |
6e70227d | 20954 | |
2e276125 JB |
20955 | macro_define_object (file, line, name, replacement); |
20956 | ||
20957 | xfree (name); | |
20958 | } | |
20959 | else if (*p == '(') | |
20960 | { | |
20961 | /* It's a function-like macro. */ | |
20962 | char *name = copy_string (body, p - body); | |
20963 | int argc = 0; | |
20964 | int argv_size = 1; | |
20965 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
20966 | ||
20967 | p++; | |
20968 | ||
20969 | p = consume_improper_spaces (p, body); | |
20970 | ||
20971 | /* Parse the formal argument list. */ | |
20972 | while (*p && *p != ')') | |
20973 | { | |
20974 | /* Find the extent of the current argument name. */ | |
20975 | const char *arg_start = p; | |
20976 | ||
20977 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
20978 | p++; | |
20979 | ||
20980 | if (! *p || p == arg_start) | |
4d3c2250 | 20981 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20982 | else |
20983 | { | |
20984 | /* Make sure argv has room for the new argument. */ | |
20985 | if (argc >= argv_size) | |
20986 | { | |
20987 | argv_size *= 2; | |
20988 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
20989 | } | |
20990 | ||
20991 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
20992 | } | |
20993 | ||
20994 | p = consume_improper_spaces (p, body); | |
20995 | ||
20996 | /* Consume the comma, if present. */ | |
20997 | if (*p == ',') | |
20998 | { | |
20999 | p++; | |
21000 | ||
21001 | p = consume_improper_spaces (p, body); | |
21002 | } | |
21003 | } | |
21004 | ||
21005 | if (*p == ')') | |
21006 | { | |
21007 | p++; | |
21008 | ||
21009 | if (*p == ' ') | |
21010 | /* Perfectly formed definition, no complaints. */ | |
21011 | macro_define_function (file, line, name, | |
6e70227d | 21012 | argc, (const char **) argv, |
2e276125 JB |
21013 | p + 1); |
21014 | else if (*p == '\0') | |
21015 | { | |
21016 | /* Complain, but do define it. */ | |
4d3c2250 | 21017 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 21018 | macro_define_function (file, line, name, |
6e70227d | 21019 | argc, (const char **) argv, |
2e276125 JB |
21020 | p); |
21021 | } | |
21022 | else | |
21023 | /* Just complain. */ | |
4d3c2250 | 21024 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21025 | } |
21026 | else | |
21027 | /* Just complain. */ | |
4d3c2250 | 21028 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21029 | |
21030 | xfree (name); | |
21031 | { | |
21032 | int i; | |
21033 | ||
21034 | for (i = 0; i < argc; i++) | |
21035 | xfree (argv[i]); | |
21036 | } | |
21037 | xfree (argv); | |
21038 | } | |
21039 | else | |
4d3c2250 | 21040 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21041 | } |
21042 | ||
cf2c3c16 TT |
21043 | /* Skip some bytes from BYTES according to the form given in FORM. |
21044 | Returns the new pointer. */ | |
2e276125 | 21045 | |
d521ce57 TT |
21046 | static const gdb_byte * |
21047 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
21048 | enum dwarf_form form, |
21049 | unsigned int offset_size, | |
21050 | struct dwarf2_section_info *section) | |
2e276125 | 21051 | { |
cf2c3c16 | 21052 | unsigned int bytes_read; |
2e276125 | 21053 | |
cf2c3c16 | 21054 | switch (form) |
2e276125 | 21055 | { |
cf2c3c16 TT |
21056 | case DW_FORM_data1: |
21057 | case DW_FORM_flag: | |
21058 | ++bytes; | |
21059 | break; | |
21060 | ||
21061 | case DW_FORM_data2: | |
21062 | bytes += 2; | |
21063 | break; | |
21064 | ||
21065 | case DW_FORM_data4: | |
21066 | bytes += 4; | |
21067 | break; | |
21068 | ||
21069 | case DW_FORM_data8: | |
21070 | bytes += 8; | |
21071 | break; | |
21072 | ||
21073 | case DW_FORM_string: | |
21074 | read_direct_string (abfd, bytes, &bytes_read); | |
21075 | bytes += bytes_read; | |
21076 | break; | |
21077 | ||
21078 | case DW_FORM_sec_offset: | |
21079 | case DW_FORM_strp: | |
36586728 | 21080 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
21081 | bytes += offset_size; |
21082 | break; | |
21083 | ||
21084 | case DW_FORM_block: | |
21085 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
21086 | bytes += bytes_read; | |
21087 | break; | |
21088 | ||
21089 | case DW_FORM_block1: | |
21090 | bytes += 1 + read_1_byte (abfd, bytes); | |
21091 | break; | |
21092 | case DW_FORM_block2: | |
21093 | bytes += 2 + read_2_bytes (abfd, bytes); | |
21094 | break; | |
21095 | case DW_FORM_block4: | |
21096 | bytes += 4 + read_4_bytes (abfd, bytes); | |
21097 | break; | |
21098 | ||
21099 | case DW_FORM_sdata: | |
21100 | case DW_FORM_udata: | |
3019eac3 DE |
21101 | case DW_FORM_GNU_addr_index: |
21102 | case DW_FORM_GNU_str_index: | |
d521ce57 | 21103 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
21104 | if (bytes == NULL) |
21105 | { | |
21106 | dwarf2_section_buffer_overflow_complaint (section); | |
21107 | return NULL; | |
21108 | } | |
cf2c3c16 TT |
21109 | break; |
21110 | ||
21111 | default: | |
21112 | { | |
21113 | complain: | |
21114 | complaint (&symfile_complaints, | |
21115 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 21116 | form, get_section_name (section)); |
cf2c3c16 TT |
21117 | return NULL; |
21118 | } | |
2e276125 JB |
21119 | } |
21120 | ||
cf2c3c16 TT |
21121 | return bytes; |
21122 | } | |
757a13d0 | 21123 | |
cf2c3c16 TT |
21124 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
21125 | opcode. Returns an updated pointer to the macro data buffer; or, | |
21126 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 21127 | |
d521ce57 | 21128 | static const gdb_byte * |
cf2c3c16 | 21129 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
21130 | const gdb_byte **opcode_definitions, |
21131 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
21132 | bfd *abfd, |
21133 | unsigned int offset_size, | |
21134 | struct dwarf2_section_info *section) | |
21135 | { | |
21136 | unsigned int bytes_read, i; | |
21137 | unsigned long arg; | |
d521ce57 | 21138 | const gdb_byte *defn; |
2e276125 | 21139 | |
cf2c3c16 | 21140 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 21141 | { |
cf2c3c16 TT |
21142 | complaint (&symfile_complaints, |
21143 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
21144 | opcode); | |
21145 | return NULL; | |
21146 | } | |
2e276125 | 21147 | |
cf2c3c16 TT |
21148 | defn = opcode_definitions[opcode]; |
21149 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
21150 | defn += bytes_read; | |
2e276125 | 21151 | |
cf2c3c16 TT |
21152 | for (i = 0; i < arg; ++i) |
21153 | { | |
f664829e DE |
21154 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
21155 | section); | |
cf2c3c16 TT |
21156 | if (mac_ptr == NULL) |
21157 | { | |
21158 | /* skip_form_bytes already issued the complaint. */ | |
21159 | return NULL; | |
21160 | } | |
21161 | } | |
757a13d0 | 21162 | |
cf2c3c16 TT |
21163 | return mac_ptr; |
21164 | } | |
757a13d0 | 21165 | |
cf2c3c16 TT |
21166 | /* A helper function which parses the header of a macro section. |
21167 | If the macro section is the extended (for now called "GNU") type, | |
21168 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
21169 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 21170 | |
d521ce57 TT |
21171 | static const gdb_byte * |
21172 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 21173 | bfd *abfd, |
d521ce57 | 21174 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
21175 | unsigned int *offset_size, |
21176 | int section_is_gnu) | |
21177 | { | |
21178 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 21179 | |
cf2c3c16 TT |
21180 | if (section_is_gnu) |
21181 | { | |
21182 | unsigned int version, flags; | |
757a13d0 | 21183 | |
cf2c3c16 TT |
21184 | version = read_2_bytes (abfd, mac_ptr); |
21185 | if (version != 4) | |
21186 | { | |
21187 | complaint (&symfile_complaints, | |
21188 | _("unrecognized version `%d' in .debug_macro section"), | |
21189 | version); | |
21190 | return NULL; | |
21191 | } | |
21192 | mac_ptr += 2; | |
757a13d0 | 21193 | |
cf2c3c16 TT |
21194 | flags = read_1_byte (abfd, mac_ptr); |
21195 | ++mac_ptr; | |
21196 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 21197 | |
cf2c3c16 TT |
21198 | if ((flags & 2) != 0) |
21199 | /* We don't need the line table offset. */ | |
21200 | mac_ptr += *offset_size; | |
757a13d0 | 21201 | |
cf2c3c16 TT |
21202 | /* Vendor opcode descriptions. */ |
21203 | if ((flags & 4) != 0) | |
21204 | { | |
21205 | unsigned int i, count; | |
757a13d0 | 21206 | |
cf2c3c16 TT |
21207 | count = read_1_byte (abfd, mac_ptr); |
21208 | ++mac_ptr; | |
21209 | for (i = 0; i < count; ++i) | |
21210 | { | |
21211 | unsigned int opcode, bytes_read; | |
21212 | unsigned long arg; | |
21213 | ||
21214 | opcode = read_1_byte (abfd, mac_ptr); | |
21215 | ++mac_ptr; | |
21216 | opcode_definitions[opcode] = mac_ptr; | |
21217 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21218 | mac_ptr += bytes_read; | |
21219 | mac_ptr += arg; | |
21220 | } | |
757a13d0 | 21221 | } |
cf2c3c16 | 21222 | } |
757a13d0 | 21223 | |
cf2c3c16 TT |
21224 | return mac_ptr; |
21225 | } | |
757a13d0 | 21226 | |
cf2c3c16 | 21227 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 21228 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
21229 | |
21230 | static void | |
d521ce57 TT |
21231 | dwarf_decode_macro_bytes (bfd *abfd, |
21232 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 21233 | struct macro_source_file *current_file, |
43f3e411 | 21234 | struct line_header *lh, |
cf2c3c16 | 21235 | struct dwarf2_section_info *section, |
36586728 | 21236 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 21237 | unsigned int offset_size, |
8fc3fc34 | 21238 | htab_t include_hash) |
cf2c3c16 | 21239 | { |
4d663531 | 21240 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
21241 | enum dwarf_macro_record_type macinfo_type; |
21242 | int at_commandline; | |
d521ce57 | 21243 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 21244 | |
cf2c3c16 TT |
21245 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
21246 | &offset_size, section_is_gnu); | |
21247 | if (mac_ptr == NULL) | |
21248 | { | |
21249 | /* We already issued a complaint. */ | |
21250 | return; | |
21251 | } | |
757a13d0 JK |
21252 | |
21253 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
21254 | GDB is still reading the definitions from command line. First | |
21255 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
21256 | to create CURRENT_FILE for the main source holding also the command line | |
21257 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
21258 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
21259 | ||
21260 | at_commandline = 1; | |
21261 | ||
21262 | do | |
21263 | { | |
21264 | /* Do we at least have room for a macinfo type byte? */ | |
21265 | if (mac_ptr >= mac_end) | |
21266 | { | |
f664829e | 21267 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
21268 | break; |
21269 | } | |
21270 | ||
21271 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
21272 | mac_ptr++; | |
21273 | ||
cf2c3c16 TT |
21274 | /* Note that we rely on the fact that the corresponding GNU and |
21275 | DWARF constants are the same. */ | |
757a13d0 JK |
21276 | switch (macinfo_type) |
21277 | { | |
21278 | /* A zero macinfo type indicates the end of the macro | |
21279 | information. */ | |
21280 | case 0: | |
21281 | break; | |
2e276125 | 21282 | |
cf2c3c16 TT |
21283 | case DW_MACRO_GNU_define: |
21284 | case DW_MACRO_GNU_undef: | |
21285 | case DW_MACRO_GNU_define_indirect: | |
21286 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
21287 | case DW_MACRO_GNU_define_indirect_alt: |
21288 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 21289 | { |
891d2f0b | 21290 | unsigned int bytes_read; |
2e276125 | 21291 | int line; |
d521ce57 | 21292 | const char *body; |
cf2c3c16 | 21293 | int is_define; |
2e276125 | 21294 | |
cf2c3c16 TT |
21295 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
21296 | mac_ptr += bytes_read; | |
21297 | ||
21298 | if (macinfo_type == DW_MACRO_GNU_define | |
21299 | || macinfo_type == DW_MACRO_GNU_undef) | |
21300 | { | |
21301 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
21302 | mac_ptr += bytes_read; | |
21303 | } | |
21304 | else | |
21305 | { | |
21306 | LONGEST str_offset; | |
21307 | ||
21308 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21309 | mac_ptr += offset_size; | |
2e276125 | 21310 | |
36586728 | 21311 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
21312 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
21313 | || section_is_dwz) | |
36586728 TT |
21314 | { |
21315 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21316 | ||
21317 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
21318 | } | |
21319 | else | |
21320 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
21321 | } |
21322 | ||
21323 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
21324 | || macinfo_type == DW_MACRO_GNU_define_indirect |
21325 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 21326 | if (! current_file) |
757a13d0 JK |
21327 | { |
21328 | /* DWARF violation as no main source is present. */ | |
21329 | complaint (&symfile_complaints, | |
21330 | _("debug info with no main source gives macro %s " | |
21331 | "on line %d: %s"), | |
cf2c3c16 TT |
21332 | is_define ? _("definition") : _("undefinition"), |
21333 | line, body); | |
757a13d0 JK |
21334 | break; |
21335 | } | |
3e43a32a MS |
21336 | if ((line == 0 && !at_commandline) |
21337 | || (line != 0 && at_commandline)) | |
4d3c2250 | 21338 | complaint (&symfile_complaints, |
757a13d0 JK |
21339 | _("debug info gives %s macro %s with %s line %d: %s"), |
21340 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 21341 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
21342 | line == 0 ? _("zero") : _("non-zero"), line, body); |
21343 | ||
cf2c3c16 | 21344 | if (is_define) |
757a13d0 | 21345 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
21346 | else |
21347 | { | |
21348 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
21349 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
21350 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
21351 | macro_undef (current_file, line, body); |
21352 | } | |
2e276125 JB |
21353 | } |
21354 | break; | |
21355 | ||
cf2c3c16 | 21356 | case DW_MACRO_GNU_start_file: |
2e276125 | 21357 | { |
891d2f0b | 21358 | unsigned int bytes_read; |
2e276125 JB |
21359 | int line, file; |
21360 | ||
21361 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21362 | mac_ptr += bytes_read; | |
21363 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21364 | mac_ptr += bytes_read; | |
21365 | ||
3e43a32a MS |
21366 | if ((line == 0 && !at_commandline) |
21367 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
21368 | complaint (&symfile_complaints, |
21369 | _("debug info gives source %d included " | |
21370 | "from %s at %s line %d"), | |
21371 | file, at_commandline ? _("command-line") : _("file"), | |
21372 | line == 0 ? _("zero") : _("non-zero"), line); | |
21373 | ||
21374 | if (at_commandline) | |
21375 | { | |
cf2c3c16 TT |
21376 | /* This DW_MACRO_GNU_start_file was executed in the |
21377 | pass one. */ | |
757a13d0 JK |
21378 | at_commandline = 0; |
21379 | } | |
21380 | else | |
43f3e411 | 21381 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
21382 | } |
21383 | break; | |
21384 | ||
cf2c3c16 | 21385 | case DW_MACRO_GNU_end_file: |
2e276125 | 21386 | if (! current_file) |
4d3c2250 | 21387 | complaint (&symfile_complaints, |
3e43a32a MS |
21388 | _("macro debug info has an unmatched " |
21389 | "`close_file' directive")); | |
2e276125 JB |
21390 | else |
21391 | { | |
21392 | current_file = current_file->included_by; | |
21393 | if (! current_file) | |
21394 | { | |
cf2c3c16 | 21395 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
21396 | |
21397 | /* GCC circa March 2002 doesn't produce the zero | |
21398 | type byte marking the end of the compilation | |
21399 | unit. Complain if it's not there, but exit no | |
21400 | matter what. */ | |
21401 | ||
21402 | /* Do we at least have room for a macinfo type byte? */ | |
21403 | if (mac_ptr >= mac_end) | |
21404 | { | |
f664829e | 21405 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
21406 | return; |
21407 | } | |
21408 | ||
21409 | /* We don't increment mac_ptr here, so this is just | |
21410 | a look-ahead. */ | |
21411 | next_type = read_1_byte (abfd, mac_ptr); | |
21412 | if (next_type != 0) | |
4d3c2250 | 21413 | complaint (&symfile_complaints, |
3e43a32a MS |
21414 | _("no terminating 0-type entry for " |
21415 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
21416 | |
21417 | return; | |
21418 | } | |
21419 | } | |
21420 | break; | |
21421 | ||
cf2c3c16 | 21422 | case DW_MACRO_GNU_transparent_include: |
36586728 | 21423 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
21424 | { |
21425 | LONGEST offset; | |
8fc3fc34 | 21426 | void **slot; |
a036ba48 TT |
21427 | bfd *include_bfd = abfd; |
21428 | struct dwarf2_section_info *include_section = section; | |
21429 | struct dwarf2_section_info alt_section; | |
d521ce57 | 21430 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 21431 | int is_dwz = section_is_dwz; |
d521ce57 | 21432 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
21433 | |
21434 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21435 | mac_ptr += offset_size; | |
21436 | ||
a036ba48 TT |
21437 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
21438 | { | |
21439 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21440 | ||
4d663531 | 21441 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 21442 | |
a036ba48 | 21443 | include_section = &dwz->macro; |
a32a8923 | 21444 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
21445 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
21446 | is_dwz = 1; | |
21447 | } | |
21448 | ||
21449 | new_mac_ptr = include_section->buffer + offset; | |
21450 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
21451 | ||
8fc3fc34 TT |
21452 | if (*slot != NULL) |
21453 | { | |
21454 | /* This has actually happened; see | |
21455 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
21456 | complaint (&symfile_complaints, | |
21457 | _("recursive DW_MACRO_GNU_transparent_include in " | |
21458 | ".debug_macro section")); | |
21459 | } | |
21460 | else | |
21461 | { | |
d521ce57 | 21462 | *slot = (void *) new_mac_ptr; |
36586728 | 21463 | |
a036ba48 | 21464 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
43f3e411 | 21465 | include_mac_end, current_file, lh, |
36586728 | 21466 | section, section_is_gnu, is_dwz, |
4d663531 | 21467 | offset_size, include_hash); |
8fc3fc34 | 21468 | |
d521ce57 | 21469 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 21470 | } |
cf2c3c16 TT |
21471 | } |
21472 | break; | |
21473 | ||
2e276125 | 21474 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
21475 | if (!section_is_gnu) |
21476 | { | |
21477 | unsigned int bytes_read; | |
21478 | int constant; | |
2e276125 | 21479 | |
cf2c3c16 TT |
21480 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
21481 | mac_ptr += bytes_read; | |
21482 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21483 | mac_ptr += bytes_read; | |
2e276125 | 21484 | |
cf2c3c16 TT |
21485 | /* We don't recognize any vendor extensions. */ |
21486 | break; | |
21487 | } | |
21488 | /* FALLTHROUGH */ | |
21489 | ||
21490 | default: | |
21491 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 21492 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
21493 | section); |
21494 | if (mac_ptr == NULL) | |
21495 | return; | |
21496 | break; | |
2e276125 | 21497 | } |
757a13d0 | 21498 | } while (macinfo_type != 0); |
2e276125 | 21499 | } |
8e19ed76 | 21500 | |
cf2c3c16 | 21501 | static void |
09262596 | 21502 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 21503 | int section_is_gnu) |
cf2c3c16 | 21504 | { |
bb5ed363 | 21505 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
21506 | struct line_header *lh = cu->line_header; |
21507 | bfd *abfd; | |
d521ce57 | 21508 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
21509 | struct macro_source_file *current_file = 0; |
21510 | enum dwarf_macro_record_type macinfo_type; | |
21511 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 21512 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 TT |
21513 | struct cleanup *cleanup; |
21514 | htab_t include_hash; | |
21515 | void **slot; | |
09262596 DE |
21516 | struct dwarf2_section_info *section; |
21517 | const char *section_name; | |
21518 | ||
21519 | if (cu->dwo_unit != NULL) | |
21520 | { | |
21521 | if (section_is_gnu) | |
21522 | { | |
21523 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
21524 | section_name = ".debug_macro.dwo"; | |
21525 | } | |
21526 | else | |
21527 | { | |
21528 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
21529 | section_name = ".debug_macinfo.dwo"; | |
21530 | } | |
21531 | } | |
21532 | else | |
21533 | { | |
21534 | if (section_is_gnu) | |
21535 | { | |
21536 | section = &dwarf2_per_objfile->macro; | |
21537 | section_name = ".debug_macro"; | |
21538 | } | |
21539 | else | |
21540 | { | |
21541 | section = &dwarf2_per_objfile->macinfo; | |
21542 | section_name = ".debug_macinfo"; | |
21543 | } | |
21544 | } | |
cf2c3c16 | 21545 | |
bb5ed363 | 21546 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
21547 | if (section->buffer == NULL) |
21548 | { | |
fceca515 | 21549 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
21550 | return; |
21551 | } | |
a32a8923 | 21552 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
21553 | |
21554 | /* First pass: Find the name of the base filename. | |
21555 | This filename is needed in order to process all macros whose definition | |
21556 | (or undefinition) comes from the command line. These macros are defined | |
21557 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
21558 | associated to the base file. | |
21559 | ||
21560 | To determine the base file name, we scan the macro definitions until we | |
21561 | reach the first DW_MACINFO_start_file entry. We then initialize | |
21562 | CURRENT_FILE accordingly so that any macro definition found before the | |
21563 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
21564 | ||
21565 | mac_ptr = section->buffer + offset; | |
21566 | mac_end = section->buffer + section->size; | |
21567 | ||
21568 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
21569 | &offset_size, section_is_gnu); | |
21570 | if (mac_ptr == NULL) | |
21571 | { | |
21572 | /* We already issued a complaint. */ | |
21573 | return; | |
21574 | } | |
21575 | ||
21576 | do | |
21577 | { | |
21578 | /* Do we at least have room for a macinfo type byte? */ | |
21579 | if (mac_ptr >= mac_end) | |
21580 | { | |
21581 | /* Complaint is printed during the second pass as GDB will probably | |
21582 | stop the first pass earlier upon finding | |
21583 | DW_MACINFO_start_file. */ | |
21584 | break; | |
21585 | } | |
21586 | ||
21587 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
21588 | mac_ptr++; | |
21589 | ||
21590 | /* Note that we rely on the fact that the corresponding GNU and | |
21591 | DWARF constants are the same. */ | |
21592 | switch (macinfo_type) | |
21593 | { | |
21594 | /* A zero macinfo type indicates the end of the macro | |
21595 | information. */ | |
21596 | case 0: | |
21597 | break; | |
21598 | ||
21599 | case DW_MACRO_GNU_define: | |
21600 | case DW_MACRO_GNU_undef: | |
21601 | /* Only skip the data by MAC_PTR. */ | |
21602 | { | |
21603 | unsigned int bytes_read; | |
21604 | ||
21605 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21606 | mac_ptr += bytes_read; | |
21607 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21608 | mac_ptr += bytes_read; | |
21609 | } | |
21610 | break; | |
21611 | ||
21612 | case DW_MACRO_GNU_start_file: | |
21613 | { | |
21614 | unsigned int bytes_read; | |
21615 | int line, file; | |
21616 | ||
21617 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21618 | mac_ptr += bytes_read; | |
21619 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21620 | mac_ptr += bytes_read; | |
21621 | ||
43f3e411 | 21622 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
21623 | } |
21624 | break; | |
21625 | ||
21626 | case DW_MACRO_GNU_end_file: | |
21627 | /* No data to skip by MAC_PTR. */ | |
21628 | break; | |
21629 | ||
21630 | case DW_MACRO_GNU_define_indirect: | |
21631 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
21632 | case DW_MACRO_GNU_define_indirect_alt: |
21633 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
21634 | { |
21635 | unsigned int bytes_read; | |
21636 | ||
21637 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21638 | mac_ptr += bytes_read; | |
21639 | mac_ptr += offset_size; | |
21640 | } | |
21641 | break; | |
21642 | ||
21643 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 21644 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
21645 | /* Note that, according to the spec, a transparent include |
21646 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
21647 | skip this opcode. */ | |
21648 | mac_ptr += offset_size; | |
21649 | break; | |
21650 | ||
21651 | case DW_MACINFO_vendor_ext: | |
21652 | /* Only skip the data by MAC_PTR. */ | |
21653 | if (!section_is_gnu) | |
21654 | { | |
21655 | unsigned int bytes_read; | |
21656 | ||
21657 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21658 | mac_ptr += bytes_read; | |
21659 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21660 | mac_ptr += bytes_read; | |
21661 | } | |
21662 | /* FALLTHROUGH */ | |
21663 | ||
21664 | default: | |
21665 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 21666 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
21667 | section); |
21668 | if (mac_ptr == NULL) | |
21669 | return; | |
21670 | break; | |
21671 | } | |
21672 | } while (macinfo_type != 0 && current_file == NULL); | |
21673 | ||
21674 | /* Second pass: Process all entries. | |
21675 | ||
21676 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
21677 | command-line macro definitions/undefinitions. This flag is unset when we | |
21678 | reach the first DW_MACINFO_start_file entry. */ | |
21679 | ||
8fc3fc34 TT |
21680 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
21681 | NULL, xcalloc, xfree); | |
21682 | cleanup = make_cleanup_htab_delete (include_hash); | |
21683 | mac_ptr = section->buffer + offset; | |
21684 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
d521ce57 | 21685 | *slot = (void *) mac_ptr; |
8fc3fc34 | 21686 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
43f3e411 | 21687 | current_file, lh, section, |
4d663531 | 21688 | section_is_gnu, 0, offset_size, include_hash); |
8fc3fc34 | 21689 | do_cleanups (cleanup); |
cf2c3c16 TT |
21690 | } |
21691 | ||
8e19ed76 | 21692 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 21693 | if so return true else false. */ |
380bca97 | 21694 | |
8e19ed76 | 21695 | static int |
6e5a29e1 | 21696 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
21697 | { |
21698 | return (attr == NULL ? 0 : | |
21699 | attr->form == DW_FORM_block1 | |
21700 | || attr->form == DW_FORM_block2 | |
21701 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
21702 | || attr->form == DW_FORM_block |
21703 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 21704 | } |
4c2df51b | 21705 | |
c6a0999f JB |
21706 | /* Return non-zero if ATTR's value is a section offset --- classes |
21707 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
21708 | You may use DW_UNSND (attr) to retrieve such offsets. | |
21709 | ||
21710 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
21711 | may have a value that belongs to more than one of these classes; it | |
21712 | would be ambiguous if we did, because we use the same forms for all | |
21713 | of them. */ | |
380bca97 | 21714 | |
3690dd37 | 21715 | static int |
6e5a29e1 | 21716 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
21717 | { |
21718 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
21719 | || attr->form == DW_FORM_data8 |
21720 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
21721 | } |
21722 | ||
3690dd37 JB |
21723 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
21724 | zero otherwise. When this function returns true, you can apply | |
21725 | dwarf2_get_attr_constant_value to it. | |
21726 | ||
21727 | However, note that for some attributes you must check | |
21728 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
21729 | and DW_FORM_data8 are members of both the constant class, and of | |
21730 | the classes that contain offsets into other debug sections | |
21731 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
21732 | that, if an attribute's can be either a constant or one of the | |
21733 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
21734 | taken as section offsets, not constants. */ | |
380bca97 | 21735 | |
3690dd37 | 21736 | static int |
6e5a29e1 | 21737 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
21738 | { |
21739 | switch (attr->form) | |
21740 | { | |
21741 | case DW_FORM_sdata: | |
21742 | case DW_FORM_udata: | |
21743 | case DW_FORM_data1: | |
21744 | case DW_FORM_data2: | |
21745 | case DW_FORM_data4: | |
21746 | case DW_FORM_data8: | |
21747 | return 1; | |
21748 | default: | |
21749 | return 0; | |
21750 | } | |
21751 | } | |
21752 | ||
7771576e SA |
21753 | |
21754 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
21755 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
21756 | ||
21757 | static int | |
6e5a29e1 | 21758 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
21759 | { |
21760 | switch (attr->form) | |
21761 | { | |
21762 | case DW_FORM_ref_addr: | |
21763 | case DW_FORM_ref1: | |
21764 | case DW_FORM_ref2: | |
21765 | case DW_FORM_ref4: | |
21766 | case DW_FORM_ref8: | |
21767 | case DW_FORM_ref_udata: | |
21768 | case DW_FORM_GNU_ref_alt: | |
21769 | return 1; | |
21770 | default: | |
21771 | return 0; | |
21772 | } | |
21773 | } | |
21774 | ||
3019eac3 DE |
21775 | /* Return the .debug_loc section to use for CU. |
21776 | For DWO files use .debug_loc.dwo. */ | |
21777 | ||
21778 | static struct dwarf2_section_info * | |
21779 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
21780 | { | |
21781 | if (cu->dwo_unit) | |
21782 | return &cu->dwo_unit->dwo_file->sections.loc; | |
21783 | return &dwarf2_per_objfile->loc; | |
21784 | } | |
21785 | ||
8cf6f0b1 TT |
21786 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
21787 | ||
21788 | static void | |
21789 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
21790 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 21791 | const struct attribute *attr) |
8cf6f0b1 | 21792 | { |
3019eac3 DE |
21793 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
21794 | ||
21795 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
21796 | |
21797 | baton->per_cu = cu->per_cu; | |
21798 | gdb_assert (baton->per_cu); | |
21799 | /* We don't know how long the location list is, but make sure we | |
21800 | don't run off the edge of the section. */ | |
3019eac3 DE |
21801 | baton->size = section->size - DW_UNSND (attr); |
21802 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 21803 | baton->base_address = cu->base_address; |
f664829e | 21804 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
21805 | } |
21806 | ||
4c2df51b | 21807 | static void |
ff39bb5e | 21808 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 21809 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 21810 | { |
bb5ed363 | 21811 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 21812 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 21813 | |
3690dd37 | 21814 | if (attr_form_is_section_offset (attr) |
3019eac3 | 21815 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
21816 | the section. If so, fall through to the complaint in the |
21817 | other branch. */ | |
3019eac3 | 21818 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 21819 | { |
0d53c4c4 | 21820 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 21821 | |
bb5ed363 | 21822 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 21823 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 21824 | |
8cf6f0b1 | 21825 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 21826 | |
d00adf39 | 21827 | if (cu->base_known == 0) |
0d53c4c4 | 21828 | complaint (&symfile_complaints, |
3e43a32a MS |
21829 | _("Location list used without " |
21830 | "specifying the CU base address.")); | |
4c2df51b | 21831 | |
f1e6e072 TT |
21832 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
21833 | ? dwarf2_loclist_block_index | |
21834 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
21835 | SYMBOL_LOCATION_BATON (sym) = baton; |
21836 | } | |
21837 | else | |
21838 | { | |
21839 | struct dwarf2_locexpr_baton *baton; | |
21840 | ||
bb5ed363 | 21841 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 21842 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
21843 | baton->per_cu = cu->per_cu; |
21844 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
21845 | |
21846 | if (attr_form_is_block (attr)) | |
21847 | { | |
21848 | /* Note that we're just copying the block's data pointer | |
21849 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
21850 | info_buffer for SYM's objfile; right now we never release |
21851 | that buffer, but when we do clean up properly this may | |
21852 | need to change. */ | |
0d53c4c4 DJ |
21853 | baton->size = DW_BLOCK (attr)->size; |
21854 | baton->data = DW_BLOCK (attr)->data; | |
21855 | } | |
21856 | else | |
21857 | { | |
21858 | dwarf2_invalid_attrib_class_complaint ("location description", | |
21859 | SYMBOL_NATURAL_NAME (sym)); | |
21860 | baton->size = 0; | |
0d53c4c4 | 21861 | } |
6e70227d | 21862 | |
f1e6e072 TT |
21863 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
21864 | ? dwarf2_locexpr_block_index | |
21865 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
21866 | SYMBOL_LOCATION_BATON (sym) = baton; |
21867 | } | |
4c2df51b | 21868 | } |
6502dd73 | 21869 | |
9aa1f1e3 TT |
21870 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
21871 | came from a separate debuginfo file, then the master objfile is | |
21872 | returned. */ | |
ae0d2f24 UW |
21873 | |
21874 | struct objfile * | |
21875 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
21876 | { | |
9291a0cd | 21877 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
21878 | |
21879 | /* Return the master objfile, so that we can report and look up the | |
21880 | correct file containing this variable. */ | |
21881 | if (objfile->separate_debug_objfile_backlink) | |
21882 | objfile = objfile->separate_debug_objfile_backlink; | |
21883 | ||
21884 | return objfile; | |
21885 | } | |
21886 | ||
96408a79 SA |
21887 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
21888 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
21889 | CU_HEADERP first. */ | |
21890 | ||
21891 | static const struct comp_unit_head * | |
21892 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
21893 | struct dwarf2_per_cu_data *per_cu) | |
21894 | { | |
d521ce57 | 21895 | const gdb_byte *info_ptr; |
96408a79 SA |
21896 | |
21897 | if (per_cu->cu) | |
21898 | return &per_cu->cu->header; | |
21899 | ||
8a0459fd | 21900 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
21901 | |
21902 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 21903 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
21904 | |
21905 | return cu_headerp; | |
21906 | } | |
21907 | ||
ae0d2f24 UW |
21908 | /* Return the address size given in the compilation unit header for CU. */ |
21909 | ||
98714339 | 21910 | int |
ae0d2f24 UW |
21911 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
21912 | { | |
96408a79 SA |
21913 | struct comp_unit_head cu_header_local; |
21914 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 21915 | |
96408a79 SA |
21916 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
21917 | ||
21918 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
21919 | } |
21920 | ||
9eae7c52 TT |
21921 | /* Return the offset size given in the compilation unit header for CU. */ |
21922 | ||
21923 | int | |
21924 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
21925 | { | |
96408a79 SA |
21926 | struct comp_unit_head cu_header_local; |
21927 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 21928 | |
96408a79 SA |
21929 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
21930 | ||
21931 | return cu_headerp->offset_size; | |
21932 | } | |
21933 | ||
21934 | /* See its dwarf2loc.h declaration. */ | |
21935 | ||
21936 | int | |
21937 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
21938 | { | |
21939 | struct comp_unit_head cu_header_local; | |
21940 | const struct comp_unit_head *cu_headerp; | |
21941 | ||
21942 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
21943 | ||
21944 | if (cu_headerp->version == 2) | |
21945 | return cu_headerp->addr_size; | |
21946 | else | |
21947 | return cu_headerp->offset_size; | |
181cebd4 JK |
21948 | } |
21949 | ||
9aa1f1e3 TT |
21950 | /* Return the text offset of the CU. The returned offset comes from |
21951 | this CU's objfile. If this objfile came from a separate debuginfo | |
21952 | file, then the offset may be different from the corresponding | |
21953 | offset in the parent objfile. */ | |
21954 | ||
21955 | CORE_ADDR | |
21956 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
21957 | { | |
bb3fa9d0 | 21958 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
21959 | |
21960 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
21961 | } | |
21962 | ||
348e048f DE |
21963 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
21964 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
21965 | |
21966 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 21967 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 21968 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
21969 | struct objfile *objfile) |
21970 | { | |
21971 | struct dwarf2_per_cu_data *this_cu; | |
21972 | int low, high; | |
36586728 | 21973 | const sect_offset *cu_off; |
ae038cb0 | 21974 | |
ae038cb0 DJ |
21975 | low = 0; |
21976 | high = dwarf2_per_objfile->n_comp_units - 1; | |
21977 | while (high > low) | |
21978 | { | |
36586728 | 21979 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 21980 | int mid = low + (high - low) / 2; |
9a619af0 | 21981 | |
36586728 TT |
21982 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
21983 | cu_off = &mid_cu->offset; | |
21984 | if (mid_cu->is_dwz > offset_in_dwz | |
21985 | || (mid_cu->is_dwz == offset_in_dwz | |
21986 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
21987 | high = mid; |
21988 | else | |
21989 | low = mid + 1; | |
21990 | } | |
21991 | gdb_assert (low == high); | |
36586728 TT |
21992 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
21993 | cu_off = &this_cu->offset; | |
21994 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 21995 | { |
36586728 | 21996 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
21997 | error (_("Dwarf Error: could not find partial DIE containing " |
21998 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 21999 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 22000 | |
b64f50a1 JK |
22001 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
22002 | <= offset.sect_off); | |
ae038cb0 DJ |
22003 | return dwarf2_per_objfile->all_comp_units[low-1]; |
22004 | } | |
22005 | else | |
22006 | { | |
22007 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
22008 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
22009 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
22010 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
22011 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
22012 | return this_cu; |
22013 | } | |
22014 | } | |
22015 | ||
23745b47 | 22016 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 22017 | |
9816fde3 | 22018 | static void |
23745b47 | 22019 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 22020 | { |
9816fde3 | 22021 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
22022 | per_cu->cu = cu; |
22023 | cu->per_cu = per_cu; | |
22024 | cu->objfile = per_cu->objfile; | |
93311388 | 22025 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
22026 | } |
22027 | ||
22028 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
22029 | ||
22030 | static void | |
95554aad TT |
22031 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
22032 | enum language pretend_language) | |
9816fde3 JK |
22033 | { |
22034 | struct attribute *attr; | |
22035 | ||
22036 | /* Set the language we're debugging. */ | |
22037 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
22038 | if (attr) | |
22039 | set_cu_language (DW_UNSND (attr), cu); | |
22040 | else | |
9cded63f | 22041 | { |
95554aad | 22042 | cu->language = pretend_language; |
9cded63f TT |
22043 | cu->language_defn = language_def (cu->language); |
22044 | } | |
dee91e82 DE |
22045 | |
22046 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
22047 | if (attr) | |
22048 | cu->producer = DW_STRING (attr); | |
93311388 DE |
22049 | } |
22050 | ||
ae038cb0 DJ |
22051 | /* Release one cached compilation unit, CU. We unlink it from the tree |
22052 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
22053 | the caller is responsible for that. |
22054 | NOTE: DATA is a void * because this function is also used as a | |
22055 | cleanup routine. */ | |
ae038cb0 DJ |
22056 | |
22057 | static void | |
68dc6402 | 22058 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
22059 | { |
22060 | struct dwarf2_cu *cu = data; | |
22061 | ||
23745b47 DE |
22062 | gdb_assert (cu->per_cu != NULL); |
22063 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
22064 | cu->per_cu = NULL; |
22065 | ||
22066 | obstack_free (&cu->comp_unit_obstack, NULL); | |
22067 | ||
22068 | xfree (cu); | |
22069 | } | |
22070 | ||
72bf9492 | 22071 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 22072 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 22073 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
22074 | |
22075 | static void | |
22076 | free_stack_comp_unit (void *data) | |
22077 | { | |
22078 | struct dwarf2_cu *cu = data; | |
22079 | ||
23745b47 DE |
22080 | gdb_assert (cu->per_cu != NULL); |
22081 | cu->per_cu->cu = NULL; | |
22082 | cu->per_cu = NULL; | |
22083 | ||
72bf9492 DJ |
22084 | obstack_free (&cu->comp_unit_obstack, NULL); |
22085 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
22086 | } |
22087 | ||
22088 | /* Free all cached compilation units. */ | |
22089 | ||
22090 | static void | |
22091 | free_cached_comp_units (void *data) | |
22092 | { | |
22093 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22094 | ||
22095 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22096 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22097 | while (per_cu != NULL) | |
22098 | { | |
22099 | struct dwarf2_per_cu_data *next_cu; | |
22100 | ||
22101 | next_cu = per_cu->cu->read_in_chain; | |
22102 | ||
68dc6402 | 22103 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
22104 | *last_chain = next_cu; |
22105 | ||
22106 | per_cu = next_cu; | |
22107 | } | |
22108 | } | |
22109 | ||
22110 | /* Increase the age counter on each cached compilation unit, and free | |
22111 | any that are too old. */ | |
22112 | ||
22113 | static void | |
22114 | age_cached_comp_units (void) | |
22115 | { | |
22116 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22117 | ||
22118 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
22119 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22120 | while (per_cu != NULL) | |
22121 | { | |
22122 | per_cu->cu->last_used ++; | |
b4f54984 | 22123 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
22124 | dwarf2_mark (per_cu->cu); |
22125 | per_cu = per_cu->cu->read_in_chain; | |
22126 | } | |
22127 | ||
22128 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22129 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22130 | while (per_cu != NULL) | |
22131 | { | |
22132 | struct dwarf2_per_cu_data *next_cu; | |
22133 | ||
22134 | next_cu = per_cu->cu->read_in_chain; | |
22135 | ||
22136 | if (!per_cu->cu->mark) | |
22137 | { | |
68dc6402 | 22138 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
22139 | *last_chain = next_cu; |
22140 | } | |
22141 | else | |
22142 | last_chain = &per_cu->cu->read_in_chain; | |
22143 | ||
22144 | per_cu = next_cu; | |
22145 | } | |
22146 | } | |
22147 | ||
22148 | /* Remove a single compilation unit from the cache. */ | |
22149 | ||
22150 | static void | |
dee91e82 | 22151 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
22152 | { |
22153 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22154 | ||
22155 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22156 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22157 | while (per_cu != NULL) | |
22158 | { | |
22159 | struct dwarf2_per_cu_data *next_cu; | |
22160 | ||
22161 | next_cu = per_cu->cu->read_in_chain; | |
22162 | ||
dee91e82 | 22163 | if (per_cu == target_per_cu) |
ae038cb0 | 22164 | { |
68dc6402 | 22165 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 22166 | per_cu->cu = NULL; |
ae038cb0 DJ |
22167 | *last_chain = next_cu; |
22168 | break; | |
22169 | } | |
22170 | else | |
22171 | last_chain = &per_cu->cu->read_in_chain; | |
22172 | ||
22173 | per_cu = next_cu; | |
22174 | } | |
22175 | } | |
22176 | ||
fe3e1990 DJ |
22177 | /* Release all extra memory associated with OBJFILE. */ |
22178 | ||
22179 | void | |
22180 | dwarf2_free_objfile (struct objfile *objfile) | |
22181 | { | |
22182 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
22183 | ||
22184 | if (dwarf2_per_objfile == NULL) | |
22185 | return; | |
22186 | ||
22187 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
22188 | free_cached_comp_units (NULL); | |
22189 | ||
7b9f3c50 DE |
22190 | if (dwarf2_per_objfile->quick_file_names_table) |
22191 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 22192 | |
527f3840 JK |
22193 | if (dwarf2_per_objfile->line_header_hash) |
22194 | htab_delete (dwarf2_per_objfile->line_header_hash); | |
22195 | ||
fe3e1990 DJ |
22196 | /* Everything else should be on the objfile obstack. */ |
22197 | } | |
22198 | ||
dee91e82 DE |
22199 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
22200 | We store these in a hash table separate from the DIEs, and preserve them | |
22201 | when the DIEs are flushed out of cache. | |
22202 | ||
22203 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 22204 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
22205 | or the type may come from a DWO file. Furthermore, while it's more logical |
22206 | to use per_cu->section+offset, with Fission the section with the data is in | |
22207 | the DWO file but we don't know that section at the point we need it. | |
22208 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
22209 | because we can enter the lookup routine, get_die_type_at_offset, from | |
22210 | outside this file, and thus won't necessarily have PER_CU->cu. | |
22211 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 22212 | |
dee91e82 | 22213 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 22214 | { |
dee91e82 | 22215 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 22216 | sect_offset offset; |
1c379e20 DJ |
22217 | struct type *type; |
22218 | }; | |
22219 | ||
dee91e82 | 22220 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22221 | |
22222 | static hashval_t | |
dee91e82 | 22223 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 22224 | { |
dee91e82 | 22225 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 22226 | |
dee91e82 | 22227 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
22228 | } |
22229 | ||
dee91e82 | 22230 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22231 | |
22232 | static int | |
dee91e82 | 22233 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 22234 | { |
dee91e82 DE |
22235 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
22236 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 22237 | |
dee91e82 DE |
22238 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
22239 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
22240 | } |
22241 | ||
22242 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
22243 | table if necessary. For convenience, return TYPE. |
22244 | ||
22245 | The DIEs reading must have careful ordering to: | |
22246 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
22247 | reading current DIE. | |
22248 | * Not trying to dereference contents of still incompletely read in types | |
22249 | while reading in other DIEs. | |
22250 | * Enable referencing still incompletely read in types just by a pointer to | |
22251 | the type without accessing its fields. | |
22252 | ||
22253 | Therefore caller should follow these rules: | |
22254 | * Try to fetch any prerequisite types we may need to build this DIE type | |
22255 | before building the type and calling set_die_type. | |
e71ec853 | 22256 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
22257 | possible before fetching more types to complete the current type. |
22258 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 22259 | |
f792889a | 22260 | static struct type * |
1c379e20 DJ |
22261 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
22262 | { | |
dee91e82 | 22263 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 22264 | struct objfile *objfile = cu->objfile; |
3cdcd0ce JB |
22265 | struct attribute *attr; |
22266 | struct dynamic_prop prop; | |
1c379e20 | 22267 | |
b4ba55a1 JB |
22268 | /* For Ada types, make sure that the gnat-specific data is always |
22269 | initialized (if not already set). There are a few types where | |
22270 | we should not be doing so, because the type-specific area is | |
22271 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
22272 | where the type-specific area is used to store the floatformat). | |
22273 | But this is not a problem, because the gnat-specific information | |
22274 | is actually not needed for these types. */ | |
22275 | if (need_gnat_info (cu) | |
22276 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
22277 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
22278 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
22279 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
22280 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
22281 | && !HAVE_GNAT_AUX_INFO (type)) |
22282 | INIT_GNAT_SPECIFIC (type); | |
22283 | ||
3cdcd0ce JB |
22284 | /* Read DW_AT_data_location and set in type. */ |
22285 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
22286 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
93a8e227 | 22287 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type, objfile); |
3cdcd0ce | 22288 | |
dee91e82 | 22289 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22290 | { |
dee91e82 DE |
22291 | dwarf2_per_objfile->die_type_hash = |
22292 | htab_create_alloc_ex (127, | |
22293 | per_cu_offset_and_type_hash, | |
22294 | per_cu_offset_and_type_eq, | |
22295 | NULL, | |
22296 | &objfile->objfile_obstack, | |
22297 | hashtab_obstack_allocate, | |
22298 | dummy_obstack_deallocate); | |
f792889a | 22299 | } |
1c379e20 | 22300 | |
dee91e82 | 22301 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
22302 | ofs.offset = die->offset; |
22303 | ofs.type = type; | |
dee91e82 DE |
22304 | slot = (struct dwarf2_per_cu_offset_and_type **) |
22305 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
22306 | if (*slot) |
22307 | complaint (&symfile_complaints, | |
22308 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 22309 | die->offset.sect_off); |
673bfd45 | 22310 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 22311 | **slot = ofs; |
f792889a | 22312 | return type; |
1c379e20 DJ |
22313 | } |
22314 | ||
02142a6c DE |
22315 | /* Look up the type for the die at OFFSET in PER_CU in die_type_hash, |
22316 | or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
22317 | |
22318 | static struct type * | |
b64f50a1 | 22319 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 22320 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 22321 | { |
dee91e82 | 22322 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 22323 | |
dee91e82 | 22324 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22325 | return NULL; |
1c379e20 | 22326 | |
dee91e82 | 22327 | ofs.per_cu = per_cu; |
673bfd45 | 22328 | ofs.offset = offset; |
dee91e82 | 22329 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
22330 | if (slot) |
22331 | return slot->type; | |
22332 | else | |
22333 | return NULL; | |
22334 | } | |
22335 | ||
02142a6c | 22336 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
22337 | or return NULL if DIE does not have a saved type. */ |
22338 | ||
22339 | static struct type * | |
22340 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
22341 | { | |
22342 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
22343 | } | |
22344 | ||
10b3939b DJ |
22345 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
22346 | ||
22347 | static void | |
22348 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
22349 | struct dwarf2_per_cu_data *ref_per_cu) | |
22350 | { | |
22351 | void **slot; | |
22352 | ||
22353 | if (cu->dependencies == NULL) | |
22354 | cu->dependencies | |
22355 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
22356 | NULL, &cu->comp_unit_obstack, | |
22357 | hashtab_obstack_allocate, | |
22358 | dummy_obstack_deallocate); | |
22359 | ||
22360 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
22361 | if (*slot == NULL) | |
22362 | *slot = ref_per_cu; | |
22363 | } | |
1c379e20 | 22364 | |
f504f079 DE |
22365 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
22366 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
22367 | cache that we must keep because we are keeping CU. */ |
22368 | ||
10b3939b DJ |
22369 | static int |
22370 | dwarf2_mark_helper (void **slot, void *data) | |
22371 | { | |
22372 | struct dwarf2_per_cu_data *per_cu; | |
22373 | ||
22374 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
22375 | |
22376 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
22377 | reading of the chain. As such dependencies remain valid it is not much | |
22378 | useful to track and undo them during QUIT cleanups. */ | |
22379 | if (per_cu->cu == NULL) | |
22380 | return 1; | |
22381 | ||
10b3939b DJ |
22382 | if (per_cu->cu->mark) |
22383 | return 1; | |
22384 | per_cu->cu->mark = 1; | |
22385 | ||
22386 | if (per_cu->cu->dependencies != NULL) | |
22387 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
22388 | ||
22389 | return 1; | |
22390 | } | |
22391 | ||
f504f079 DE |
22392 | /* Set the mark field in CU and in every other compilation unit in the |
22393 | cache that we must keep because we are keeping CU. */ | |
22394 | ||
ae038cb0 DJ |
22395 | static void |
22396 | dwarf2_mark (struct dwarf2_cu *cu) | |
22397 | { | |
22398 | if (cu->mark) | |
22399 | return; | |
22400 | cu->mark = 1; | |
10b3939b DJ |
22401 | if (cu->dependencies != NULL) |
22402 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
22403 | } |
22404 | ||
22405 | static void | |
22406 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
22407 | { | |
22408 | while (per_cu) | |
22409 | { | |
22410 | per_cu->cu->mark = 0; | |
22411 | per_cu = per_cu->cu->read_in_chain; | |
22412 | } | |
72bf9492 DJ |
22413 | } |
22414 | ||
72bf9492 DJ |
22415 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
22416 | is its offset in .debug_info for this objfile. */ | |
22417 | ||
22418 | static hashval_t | |
22419 | partial_die_hash (const void *item) | |
22420 | { | |
22421 | const struct partial_die_info *part_die = item; | |
9a619af0 | 22422 | |
b64f50a1 | 22423 | return part_die->offset.sect_off; |
72bf9492 DJ |
22424 | } |
22425 | ||
22426 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
22427 | are equal if they have the same offset. */ | |
22428 | ||
22429 | static int | |
22430 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
22431 | { | |
22432 | const struct partial_die_info *part_die_lhs = item_lhs; | |
22433 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 22434 | |
b64f50a1 | 22435 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
22436 | } |
22437 | ||
b4f54984 DE |
22438 | static struct cmd_list_element *set_dwarf_cmdlist; |
22439 | static struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
22440 | |
22441 | static void | |
b4f54984 | 22442 | set_dwarf_cmd (char *args, int from_tty) |
ae038cb0 | 22443 | { |
b4f54984 | 22444 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 22445 | gdb_stdout); |
ae038cb0 DJ |
22446 | } |
22447 | ||
22448 | static void | |
b4f54984 | 22449 | show_dwarf_cmd (char *args, int from_tty) |
6e70227d | 22450 | { |
b4f54984 | 22451 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
22452 | } |
22453 | ||
4bf44c1c | 22454 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
22455 | |
22456 | static void | |
c1bd65d0 | 22457 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
22458 | { |
22459 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 22460 | int ix; |
8b70b953 | 22461 | |
626f2d1c TT |
22462 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
22463 | cleaning up. */ | |
22464 | dwarf2_per_objfile = NULL; | |
22465 | ||
59b0c7c1 JB |
22466 | for (ix = 0; ix < data->n_comp_units; ++ix) |
22467 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 22468 | |
59b0c7c1 | 22469 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 22470 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
22471 | data->all_type_units[ix]->per_cu.imported_symtabs); |
22472 | xfree (data->all_type_units); | |
95554aad | 22473 | |
8b70b953 | 22474 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
22475 | |
22476 | if (data->dwo_files) | |
22477 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
22478 | if (data->dwp_file) |
22479 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
22480 | |
22481 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
22482 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
22483 | } |
22484 | ||
22485 | \f | |
ae2de4f8 | 22486 | /* The "save gdb-index" command. */ |
9291a0cd TT |
22487 | |
22488 | /* The contents of the hash table we create when building the string | |
22489 | table. */ | |
22490 | struct strtab_entry | |
22491 | { | |
22492 | offset_type offset; | |
22493 | const char *str; | |
22494 | }; | |
22495 | ||
559a7a62 JK |
22496 | /* Hash function for a strtab_entry. |
22497 | ||
22498 | Function is used only during write_hash_table so no index format backward | |
22499 | compatibility is needed. */ | |
b89be57b | 22500 | |
9291a0cd TT |
22501 | static hashval_t |
22502 | hash_strtab_entry (const void *e) | |
22503 | { | |
22504 | const struct strtab_entry *entry = e; | |
559a7a62 | 22505 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
22506 | } |
22507 | ||
22508 | /* Equality function for a strtab_entry. */ | |
b89be57b | 22509 | |
9291a0cd TT |
22510 | static int |
22511 | eq_strtab_entry (const void *a, const void *b) | |
22512 | { | |
22513 | const struct strtab_entry *ea = a; | |
22514 | const struct strtab_entry *eb = b; | |
22515 | return !strcmp (ea->str, eb->str); | |
22516 | } | |
22517 | ||
22518 | /* Create a strtab_entry hash table. */ | |
b89be57b | 22519 | |
9291a0cd TT |
22520 | static htab_t |
22521 | create_strtab (void) | |
22522 | { | |
22523 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
22524 | xfree, xcalloc, xfree); | |
22525 | } | |
22526 | ||
22527 | /* Add a string to the constant pool. Return the string's offset in | |
22528 | host order. */ | |
b89be57b | 22529 | |
9291a0cd TT |
22530 | static offset_type |
22531 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
22532 | { | |
22533 | void **slot; | |
22534 | struct strtab_entry entry; | |
22535 | struct strtab_entry *result; | |
22536 | ||
22537 | entry.str = str; | |
22538 | slot = htab_find_slot (table, &entry, INSERT); | |
22539 | if (*slot) | |
22540 | result = *slot; | |
22541 | else | |
22542 | { | |
22543 | result = XNEW (struct strtab_entry); | |
22544 | result->offset = obstack_object_size (cpool); | |
22545 | result->str = str; | |
22546 | obstack_grow_str0 (cpool, str); | |
22547 | *slot = result; | |
22548 | } | |
22549 | return result->offset; | |
22550 | } | |
22551 | ||
22552 | /* An entry in the symbol table. */ | |
22553 | struct symtab_index_entry | |
22554 | { | |
22555 | /* The name of the symbol. */ | |
22556 | const char *name; | |
22557 | /* The offset of the name in the constant pool. */ | |
22558 | offset_type index_offset; | |
22559 | /* A sorted vector of the indices of all the CUs that hold an object | |
22560 | of this name. */ | |
22561 | VEC (offset_type) *cu_indices; | |
22562 | }; | |
22563 | ||
22564 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
22565 | struct mapped_symtab | |
22566 | { | |
22567 | offset_type n_elements; | |
22568 | offset_type size; | |
22569 | struct symtab_index_entry **data; | |
22570 | }; | |
22571 | ||
22572 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 22573 | |
9291a0cd TT |
22574 | static hashval_t |
22575 | hash_symtab_entry (const void *e) | |
22576 | { | |
22577 | const struct symtab_index_entry *entry = e; | |
22578 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
22579 | sizeof (offset_type) * VEC_length (offset_type, | |
22580 | entry->cu_indices), | |
22581 | 0); | |
22582 | } | |
22583 | ||
22584 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 22585 | |
9291a0cd TT |
22586 | static int |
22587 | eq_symtab_entry (const void *a, const void *b) | |
22588 | { | |
22589 | const struct symtab_index_entry *ea = a; | |
22590 | const struct symtab_index_entry *eb = b; | |
22591 | int len = VEC_length (offset_type, ea->cu_indices); | |
22592 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
22593 | return 0; | |
22594 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
22595 | VEC_address (offset_type, eb->cu_indices), | |
22596 | sizeof (offset_type) * len); | |
22597 | } | |
22598 | ||
22599 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 22600 | |
9291a0cd TT |
22601 | static void |
22602 | delete_symtab_entry (void *p) | |
22603 | { | |
22604 | struct symtab_index_entry *entry = p; | |
22605 | VEC_free (offset_type, entry->cu_indices); | |
22606 | xfree (entry); | |
22607 | } | |
22608 | ||
22609 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 22610 | |
9291a0cd | 22611 | static htab_t |
3876f04e | 22612 | create_symbol_hash_table (void) |
9291a0cd TT |
22613 | { |
22614 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
22615 | delete_symtab_entry, xcalloc, xfree); | |
22616 | } | |
22617 | ||
22618 | /* Create a new mapped symtab object. */ | |
b89be57b | 22619 | |
9291a0cd TT |
22620 | static struct mapped_symtab * |
22621 | create_mapped_symtab (void) | |
22622 | { | |
22623 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
22624 | symtab->n_elements = 0; | |
22625 | symtab->size = 1024; | |
22626 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
22627 | return symtab; | |
22628 | } | |
22629 | ||
22630 | /* Destroy a mapped_symtab. */ | |
b89be57b | 22631 | |
9291a0cd TT |
22632 | static void |
22633 | cleanup_mapped_symtab (void *p) | |
22634 | { | |
22635 | struct mapped_symtab *symtab = p; | |
22636 | /* The contents of the array are freed when the other hash table is | |
22637 | destroyed. */ | |
22638 | xfree (symtab->data); | |
22639 | xfree (symtab); | |
22640 | } | |
22641 | ||
22642 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
22643 | the slot. |
22644 | ||
22645 | Function is used only during write_hash_table so no index format backward | |
22646 | compatibility is needed. */ | |
b89be57b | 22647 | |
9291a0cd TT |
22648 | static struct symtab_index_entry ** |
22649 | find_slot (struct mapped_symtab *symtab, const char *name) | |
22650 | { | |
559a7a62 | 22651 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
22652 | |
22653 | index = hash & (symtab->size - 1); | |
22654 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
22655 | ||
22656 | for (;;) | |
22657 | { | |
22658 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
22659 | return &symtab->data[index]; | |
22660 | index = (index + step) & (symtab->size - 1); | |
22661 | } | |
22662 | } | |
22663 | ||
22664 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 22665 | |
9291a0cd TT |
22666 | static void |
22667 | hash_expand (struct mapped_symtab *symtab) | |
22668 | { | |
22669 | offset_type old_size = symtab->size; | |
22670 | offset_type i; | |
22671 | struct symtab_index_entry **old_entries = symtab->data; | |
22672 | ||
22673 | symtab->size *= 2; | |
22674 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
22675 | ||
22676 | for (i = 0; i < old_size; ++i) | |
22677 | { | |
22678 | if (old_entries[i]) | |
22679 | { | |
22680 | struct symtab_index_entry **slot = find_slot (symtab, | |
22681 | old_entries[i]->name); | |
22682 | *slot = old_entries[i]; | |
22683 | } | |
22684 | } | |
22685 | ||
22686 | xfree (old_entries); | |
22687 | } | |
22688 | ||
156942c7 DE |
22689 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
22690 | CU_INDEX is the index of the CU in which the symbol appears. | |
22691 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 22692 | |
9291a0cd TT |
22693 | static void |
22694 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 22695 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
22696 | offset_type cu_index) |
22697 | { | |
22698 | struct symtab_index_entry **slot; | |
156942c7 | 22699 | offset_type cu_index_and_attrs; |
9291a0cd TT |
22700 | |
22701 | ++symtab->n_elements; | |
22702 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
22703 | hash_expand (symtab); | |
22704 | ||
22705 | slot = find_slot (symtab, name); | |
22706 | if (!*slot) | |
22707 | { | |
22708 | *slot = XNEW (struct symtab_index_entry); | |
22709 | (*slot)->name = name; | |
156942c7 | 22710 | /* index_offset is set later. */ |
9291a0cd TT |
22711 | (*slot)->cu_indices = NULL; |
22712 | } | |
156942c7 DE |
22713 | |
22714 | cu_index_and_attrs = 0; | |
22715 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
22716 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
22717 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
22718 | ||
22719 | /* We don't want to record an index value twice as we want to avoid the | |
22720 | duplication. | |
22721 | We process all global symbols and then all static symbols | |
22722 | (which would allow us to avoid the duplication by only having to check | |
22723 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
22724 | To keep things simple we don't worry about the duplication here and | |
22725 | sort and uniqufy the list after we've processed all symbols. */ | |
22726 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
22727 | } | |
22728 | ||
22729 | /* qsort helper routine for uniquify_cu_indices. */ | |
22730 | ||
22731 | static int | |
22732 | offset_type_compare (const void *ap, const void *bp) | |
22733 | { | |
22734 | offset_type a = *(offset_type *) ap; | |
22735 | offset_type b = *(offset_type *) bp; | |
22736 | ||
22737 | return (a > b) - (b > a); | |
22738 | } | |
22739 | ||
22740 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
22741 | ||
22742 | static void | |
22743 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
22744 | { | |
22745 | int i; | |
22746 | ||
22747 | for (i = 0; i < symtab->size; ++i) | |
22748 | { | |
22749 | struct symtab_index_entry *entry = symtab->data[i]; | |
22750 | ||
22751 | if (entry | |
22752 | && entry->cu_indices != NULL) | |
22753 | { | |
22754 | unsigned int next_to_insert, next_to_check; | |
22755 | offset_type last_value; | |
22756 | ||
22757 | qsort (VEC_address (offset_type, entry->cu_indices), | |
22758 | VEC_length (offset_type, entry->cu_indices), | |
22759 | sizeof (offset_type), offset_type_compare); | |
22760 | ||
22761 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
22762 | next_to_insert = 1; | |
22763 | for (next_to_check = 1; | |
22764 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
22765 | ++next_to_check) | |
22766 | { | |
22767 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
22768 | != last_value) | |
22769 | { | |
22770 | last_value = VEC_index (offset_type, entry->cu_indices, | |
22771 | next_to_check); | |
22772 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
22773 | last_value); | |
22774 | ++next_to_insert; | |
22775 | } | |
22776 | } | |
22777 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
22778 | } | |
22779 | } | |
9291a0cd TT |
22780 | } |
22781 | ||
22782 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 22783 | |
9291a0cd | 22784 | static offset_type |
3876f04e | 22785 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
22786 | struct symtab_index_entry *entry) |
22787 | { | |
22788 | void **slot; | |
22789 | ||
3876f04e | 22790 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
22791 | if (!*slot) |
22792 | { | |
22793 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
22794 | offset_type val = MAYBE_SWAP (len); | |
22795 | offset_type iter; | |
22796 | int i; | |
22797 | ||
22798 | *slot = entry; | |
22799 | entry->index_offset = obstack_object_size (cpool); | |
22800 | ||
22801 | obstack_grow (cpool, &val, sizeof (val)); | |
22802 | for (i = 0; | |
22803 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
22804 | ++i) | |
22805 | { | |
22806 | val = MAYBE_SWAP (iter); | |
22807 | obstack_grow (cpool, &val, sizeof (val)); | |
22808 | } | |
22809 | } | |
22810 | else | |
22811 | { | |
22812 | struct symtab_index_entry *old_entry = *slot; | |
22813 | entry->index_offset = old_entry->index_offset; | |
22814 | entry = old_entry; | |
22815 | } | |
22816 | return entry->index_offset; | |
22817 | } | |
22818 | ||
22819 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
22820 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 22821 | |
9291a0cd TT |
22822 | static void |
22823 | write_hash_table (struct mapped_symtab *symtab, | |
22824 | struct obstack *output, struct obstack *cpool) | |
22825 | { | |
22826 | offset_type i; | |
3876f04e | 22827 | htab_t symbol_hash_table; |
9291a0cd TT |
22828 | htab_t str_table; |
22829 | ||
3876f04e | 22830 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 22831 | str_table = create_strtab (); |
3876f04e | 22832 | |
9291a0cd TT |
22833 | /* We add all the index vectors to the constant pool first, to |
22834 | ensure alignment is ok. */ | |
22835 | for (i = 0; i < symtab->size; ++i) | |
22836 | { | |
22837 | if (symtab->data[i]) | |
3876f04e | 22838 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
22839 | } |
22840 | ||
22841 | /* Now write out the hash table. */ | |
22842 | for (i = 0; i < symtab->size; ++i) | |
22843 | { | |
22844 | offset_type str_off, vec_off; | |
22845 | ||
22846 | if (symtab->data[i]) | |
22847 | { | |
22848 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
22849 | vec_off = symtab->data[i]->index_offset; | |
22850 | } | |
22851 | else | |
22852 | { | |
22853 | /* While 0 is a valid constant pool index, it is not valid | |
22854 | to have 0 for both offsets. */ | |
22855 | str_off = 0; | |
22856 | vec_off = 0; | |
22857 | } | |
22858 | ||
22859 | str_off = MAYBE_SWAP (str_off); | |
22860 | vec_off = MAYBE_SWAP (vec_off); | |
22861 | ||
22862 | obstack_grow (output, &str_off, sizeof (str_off)); | |
22863 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
22864 | } | |
22865 | ||
22866 | htab_delete (str_table); | |
3876f04e | 22867 | htab_delete (symbol_hash_table); |
9291a0cd TT |
22868 | } |
22869 | ||
0a5429f6 DE |
22870 | /* Struct to map psymtab to CU index in the index file. */ |
22871 | struct psymtab_cu_index_map | |
22872 | { | |
22873 | struct partial_symtab *psymtab; | |
22874 | unsigned int cu_index; | |
22875 | }; | |
22876 | ||
22877 | static hashval_t | |
22878 | hash_psymtab_cu_index (const void *item) | |
22879 | { | |
22880 | const struct psymtab_cu_index_map *map = item; | |
22881 | ||
22882 | return htab_hash_pointer (map->psymtab); | |
22883 | } | |
22884 | ||
22885 | static int | |
22886 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
22887 | { | |
22888 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
22889 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
22890 | ||
22891 | return lhs->psymtab == rhs->psymtab; | |
22892 | } | |
22893 | ||
22894 | /* Helper struct for building the address table. */ | |
22895 | struct addrmap_index_data | |
22896 | { | |
22897 | struct objfile *objfile; | |
22898 | struct obstack *addr_obstack; | |
22899 | htab_t cu_index_htab; | |
22900 | ||
22901 | /* Non-zero if the previous_* fields are valid. | |
22902 | We can't write an entry until we see the next entry (since it is only then | |
22903 | that we know the end of the entry). */ | |
22904 | int previous_valid; | |
22905 | /* Index of the CU in the table of all CUs in the index file. */ | |
22906 | unsigned int previous_cu_index; | |
0963b4bd | 22907 | /* Start address of the CU. */ |
0a5429f6 DE |
22908 | CORE_ADDR previous_cu_start; |
22909 | }; | |
22910 | ||
22911 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 22912 | |
9291a0cd | 22913 | static void |
0a5429f6 DE |
22914 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
22915 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 22916 | { |
0a5429f6 | 22917 | offset_type cu_index_to_write; |
948f8e3d | 22918 | gdb_byte addr[8]; |
9291a0cd TT |
22919 | CORE_ADDR baseaddr; |
22920 | ||
22921 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
22922 | ||
0a5429f6 DE |
22923 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
22924 | obstack_grow (obstack, addr, 8); | |
22925 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
22926 | obstack_grow (obstack, addr, 8); | |
22927 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
22928 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
22929 | } | |
22930 | ||
22931 | /* Worker function for traversing an addrmap to build the address table. */ | |
22932 | ||
22933 | static int | |
22934 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
22935 | { | |
22936 | struct addrmap_index_data *data = datap; | |
22937 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
22938 | |
22939 | if (data->previous_valid) | |
22940 | add_address_entry (data->objfile, data->addr_obstack, | |
22941 | data->previous_cu_start, start_addr, | |
22942 | data->previous_cu_index); | |
22943 | ||
22944 | data->previous_cu_start = start_addr; | |
22945 | if (pst != NULL) | |
22946 | { | |
22947 | struct psymtab_cu_index_map find_map, *map; | |
22948 | find_map.psymtab = pst; | |
22949 | map = htab_find (data->cu_index_htab, &find_map); | |
22950 | gdb_assert (map != NULL); | |
22951 | data->previous_cu_index = map->cu_index; | |
22952 | data->previous_valid = 1; | |
22953 | } | |
22954 | else | |
22955 | data->previous_valid = 0; | |
22956 | ||
22957 | return 0; | |
22958 | } | |
22959 | ||
22960 | /* Write OBJFILE's address map to OBSTACK. | |
22961 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
22962 | in the index file. */ | |
22963 | ||
22964 | static void | |
22965 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
22966 | htab_t cu_index_htab) | |
22967 | { | |
22968 | struct addrmap_index_data addrmap_index_data; | |
22969 | ||
22970 | /* When writing the address table, we have to cope with the fact that | |
22971 | the addrmap iterator only provides the start of a region; we have to | |
22972 | wait until the next invocation to get the start of the next region. */ | |
22973 | ||
22974 | addrmap_index_data.objfile = objfile; | |
22975 | addrmap_index_data.addr_obstack = obstack; | |
22976 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
22977 | addrmap_index_data.previous_valid = 0; | |
22978 | ||
22979 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
22980 | &addrmap_index_data); | |
22981 | ||
22982 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
22983 | is valid, but we should still handle it. | |
22984 | The end address is recorded as the start of the next region, but that | |
22985 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
22986 | anyway. */ | |
22987 | if (addrmap_index_data.previous_valid) | |
22988 | add_address_entry (objfile, obstack, | |
22989 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
22990 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
22991 | } |
22992 | ||
156942c7 DE |
22993 | /* Return the symbol kind of PSYM. */ |
22994 | ||
22995 | static gdb_index_symbol_kind | |
22996 | symbol_kind (struct partial_symbol *psym) | |
22997 | { | |
22998 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
22999 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
23000 | ||
23001 | switch (domain) | |
23002 | { | |
23003 | case VAR_DOMAIN: | |
23004 | switch (aclass) | |
23005 | { | |
23006 | case LOC_BLOCK: | |
23007 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
23008 | case LOC_TYPEDEF: | |
23009 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
23010 | case LOC_COMPUTED: | |
23011 | case LOC_CONST_BYTES: | |
23012 | case LOC_OPTIMIZED_OUT: | |
23013 | case LOC_STATIC: | |
23014 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
23015 | case LOC_CONST: | |
23016 | /* Note: It's currently impossible to recognize psyms as enum values | |
23017 | short of reading the type info. For now punt. */ | |
23018 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
23019 | default: | |
23020 | /* There are other LOC_FOO values that one might want to classify | |
23021 | as variables, but dwarf2read.c doesn't currently use them. */ | |
23022 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
23023 | } | |
23024 | case STRUCT_DOMAIN: | |
23025 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
23026 | default: | |
23027 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
23028 | } | |
23029 | } | |
23030 | ||
9291a0cd | 23031 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 23032 | |
9291a0cd TT |
23033 | static void |
23034 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 23035 | htab_t psyms_seen, |
9291a0cd TT |
23036 | struct partial_symbol **psymp, |
23037 | int count, | |
987d643c TT |
23038 | offset_type cu_index, |
23039 | int is_static) | |
9291a0cd TT |
23040 | { |
23041 | for (; count-- > 0; ++psymp) | |
23042 | { | |
156942c7 DE |
23043 | struct partial_symbol *psym = *psymp; |
23044 | void **slot; | |
987d643c | 23045 | |
156942c7 | 23046 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 23047 | error (_("Ada is not currently supported by the index")); |
987d643c | 23048 | |
987d643c | 23049 | /* Only add a given psymbol once. */ |
156942c7 | 23050 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
23051 | if (!*slot) |
23052 | { | |
156942c7 DE |
23053 | gdb_index_symbol_kind kind = symbol_kind (psym); |
23054 | ||
23055 | *slot = psym; | |
23056 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
23057 | is_static, kind, cu_index); | |
987d643c | 23058 | } |
9291a0cd TT |
23059 | } |
23060 | } | |
23061 | ||
23062 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
23063 | exception if there is an error. */ | |
b89be57b | 23064 | |
9291a0cd TT |
23065 | static void |
23066 | write_obstack (FILE *file, struct obstack *obstack) | |
23067 | { | |
23068 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
23069 | file) | |
23070 | != obstack_object_size (obstack)) | |
23071 | error (_("couldn't data write to file")); | |
23072 | } | |
23073 | ||
23074 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 23075 | |
9291a0cd TT |
23076 | static void |
23077 | unlink_if_set (void *p) | |
23078 | { | |
23079 | char **filename = p; | |
23080 | if (*filename) | |
23081 | unlink (*filename); | |
23082 | } | |
23083 | ||
1fd400ff TT |
23084 | /* A helper struct used when iterating over debug_types. */ |
23085 | struct signatured_type_index_data | |
23086 | { | |
23087 | struct objfile *objfile; | |
23088 | struct mapped_symtab *symtab; | |
23089 | struct obstack *types_list; | |
987d643c | 23090 | htab_t psyms_seen; |
1fd400ff TT |
23091 | int cu_index; |
23092 | }; | |
23093 | ||
23094 | /* A helper function that writes a single signatured_type to an | |
23095 | obstack. */ | |
b89be57b | 23096 | |
1fd400ff TT |
23097 | static int |
23098 | write_one_signatured_type (void **slot, void *d) | |
23099 | { | |
23100 | struct signatured_type_index_data *info = d; | |
23101 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
0186c6a7 | 23102 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
23103 | gdb_byte val[8]; |
23104 | ||
23105 | write_psymbols (info->symtab, | |
987d643c | 23106 | info->psyms_seen, |
3e43a32a MS |
23107 | info->objfile->global_psymbols.list |
23108 | + psymtab->globals_offset, | |
987d643c TT |
23109 | psymtab->n_global_syms, info->cu_index, |
23110 | 0); | |
1fd400ff | 23111 | write_psymbols (info->symtab, |
987d643c | 23112 | info->psyms_seen, |
3e43a32a MS |
23113 | info->objfile->static_psymbols.list |
23114 | + psymtab->statics_offset, | |
987d643c TT |
23115 | psymtab->n_static_syms, info->cu_index, |
23116 | 1); | |
1fd400ff | 23117 | |
b64f50a1 JK |
23118 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23119 | entry->per_cu.offset.sect_off); | |
1fd400ff | 23120 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
23121 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23122 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
23123 | obstack_grow (info->types_list, val, 8); |
23124 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
23125 | obstack_grow (info->types_list, val, 8); | |
23126 | ||
23127 | ++info->cu_index; | |
23128 | ||
23129 | return 1; | |
23130 | } | |
23131 | ||
95554aad TT |
23132 | /* Recurse into all "included" dependencies and write their symbols as |
23133 | if they appeared in this psymtab. */ | |
23134 | ||
23135 | static void | |
23136 | recursively_write_psymbols (struct objfile *objfile, | |
23137 | struct partial_symtab *psymtab, | |
23138 | struct mapped_symtab *symtab, | |
23139 | htab_t psyms_seen, | |
23140 | offset_type cu_index) | |
23141 | { | |
23142 | int i; | |
23143 | ||
23144 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
23145 | if (psymtab->dependencies[i]->user != NULL) | |
23146 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
23147 | symtab, psyms_seen, cu_index); | |
23148 | ||
23149 | write_psymbols (symtab, | |
23150 | psyms_seen, | |
23151 | objfile->global_psymbols.list + psymtab->globals_offset, | |
23152 | psymtab->n_global_syms, cu_index, | |
23153 | 0); | |
23154 | write_psymbols (symtab, | |
23155 | psyms_seen, | |
23156 | objfile->static_psymbols.list + psymtab->statics_offset, | |
23157 | psymtab->n_static_syms, cu_index, | |
23158 | 1); | |
23159 | } | |
23160 | ||
9291a0cd | 23161 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 23162 | |
9291a0cd TT |
23163 | static void |
23164 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
23165 | { | |
23166 | struct cleanup *cleanup; | |
23167 | char *filename, *cleanup_filename; | |
1fd400ff TT |
23168 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
23169 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
23170 | int i; |
23171 | FILE *out_file; | |
23172 | struct mapped_symtab *symtab; | |
23173 | offset_type val, size_of_contents, total_len; | |
23174 | struct stat st; | |
987d643c | 23175 | htab_t psyms_seen; |
0a5429f6 DE |
23176 | htab_t cu_index_htab; |
23177 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 23178 | |
9291a0cd TT |
23179 | if (dwarf2_per_objfile->using_index) |
23180 | error (_("Cannot use an index to create the index")); | |
23181 | ||
8b70b953 TT |
23182 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
23183 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
23184 | ||
260b681b DE |
23185 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
23186 | return; | |
23187 | ||
4262abfb JK |
23188 | if (stat (objfile_name (objfile), &st) < 0) |
23189 | perror_with_name (objfile_name (objfile)); | |
9291a0cd | 23190 | |
4262abfb | 23191 | filename = concat (dir, SLASH_STRING, lbasename (objfile_name (objfile)), |
9291a0cd TT |
23192 | INDEX_SUFFIX, (char *) NULL); |
23193 | cleanup = make_cleanup (xfree, filename); | |
23194 | ||
614c279d | 23195 | out_file = gdb_fopen_cloexec (filename, "wb"); |
9291a0cd TT |
23196 | if (!out_file) |
23197 | error (_("Can't open `%s' for writing"), filename); | |
23198 | ||
23199 | cleanup_filename = filename; | |
23200 | make_cleanup (unlink_if_set, &cleanup_filename); | |
23201 | ||
23202 | symtab = create_mapped_symtab (); | |
23203 | make_cleanup (cleanup_mapped_symtab, symtab); | |
23204 | ||
23205 | obstack_init (&addr_obstack); | |
23206 | make_cleanup_obstack_free (&addr_obstack); | |
23207 | ||
23208 | obstack_init (&cu_list); | |
23209 | make_cleanup_obstack_free (&cu_list); | |
23210 | ||
1fd400ff TT |
23211 | obstack_init (&types_cu_list); |
23212 | make_cleanup_obstack_free (&types_cu_list); | |
23213 | ||
987d643c TT |
23214 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
23215 | NULL, xcalloc, xfree); | |
96408a79 | 23216 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 23217 | |
0a5429f6 DE |
23218 | /* While we're scanning CU's create a table that maps a psymtab pointer |
23219 | (which is what addrmap records) to its index (which is what is recorded | |
23220 | in the index file). This will later be needed to write the address | |
23221 | table. */ | |
23222 | cu_index_htab = htab_create_alloc (100, | |
23223 | hash_psymtab_cu_index, | |
23224 | eq_psymtab_cu_index, | |
23225 | NULL, xcalloc, xfree); | |
96408a79 | 23226 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
23227 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
23228 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
23229 | * dwarf2_per_objfile->n_comp_units); | |
23230 | make_cleanup (xfree, psymtab_cu_index_map); | |
23231 | ||
23232 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
23233 | work here. Also, the debug_types entries do not appear in |
23234 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
23235 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
23236 | { | |
3e43a32a MS |
23237 | struct dwarf2_per_cu_data *per_cu |
23238 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 23239 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 23240 | gdb_byte val[8]; |
0a5429f6 DE |
23241 | struct psymtab_cu_index_map *map; |
23242 | void **slot; | |
9291a0cd | 23243 | |
92fac807 JK |
23244 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
23245 | It may be referenced from a local scope but in such case it does not | |
23246 | need to be present in .gdb_index. */ | |
23247 | if (psymtab == NULL) | |
23248 | continue; | |
23249 | ||
95554aad TT |
23250 | if (psymtab->user == NULL) |
23251 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 23252 | |
0a5429f6 DE |
23253 | map = &psymtab_cu_index_map[i]; |
23254 | map->psymtab = psymtab; | |
23255 | map->cu_index = i; | |
23256 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
23257 | gdb_assert (slot != NULL); | |
23258 | gdb_assert (*slot == NULL); | |
23259 | *slot = map; | |
9291a0cd | 23260 | |
b64f50a1 JK |
23261 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23262 | per_cu->offset.sect_off); | |
9291a0cd | 23263 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 23264 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
23265 | obstack_grow (&cu_list, val, 8); |
23266 | } | |
23267 | ||
0a5429f6 DE |
23268 | /* Dump the address map. */ |
23269 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
23270 | ||
1fd400ff TT |
23271 | /* Write out the .debug_type entries, if any. */ |
23272 | if (dwarf2_per_objfile->signatured_types) | |
23273 | { | |
23274 | struct signatured_type_index_data sig_data; | |
23275 | ||
23276 | sig_data.objfile = objfile; | |
23277 | sig_data.symtab = symtab; | |
23278 | sig_data.types_list = &types_cu_list; | |
987d643c | 23279 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
23280 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
23281 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
23282 | write_one_signatured_type, &sig_data); | |
23283 | } | |
23284 | ||
156942c7 DE |
23285 | /* Now that we've processed all symbols we can shrink their cu_indices |
23286 | lists. */ | |
23287 | uniquify_cu_indices (symtab); | |
23288 | ||
9291a0cd TT |
23289 | obstack_init (&constant_pool); |
23290 | make_cleanup_obstack_free (&constant_pool); | |
23291 | obstack_init (&symtab_obstack); | |
23292 | make_cleanup_obstack_free (&symtab_obstack); | |
23293 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
23294 | ||
23295 | obstack_init (&contents); | |
23296 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 23297 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
23298 | total_len = size_of_contents; |
23299 | ||
23300 | /* The version number. */ | |
796a7ff8 | 23301 | val = MAYBE_SWAP (8); |
9291a0cd TT |
23302 | obstack_grow (&contents, &val, sizeof (val)); |
23303 | ||
23304 | /* The offset of the CU list from the start of the file. */ | |
23305 | val = MAYBE_SWAP (total_len); | |
23306 | obstack_grow (&contents, &val, sizeof (val)); | |
23307 | total_len += obstack_object_size (&cu_list); | |
23308 | ||
1fd400ff TT |
23309 | /* The offset of the types CU list from the start of the file. */ |
23310 | val = MAYBE_SWAP (total_len); | |
23311 | obstack_grow (&contents, &val, sizeof (val)); | |
23312 | total_len += obstack_object_size (&types_cu_list); | |
23313 | ||
9291a0cd TT |
23314 | /* The offset of the address table from the start of the file. */ |
23315 | val = MAYBE_SWAP (total_len); | |
23316 | obstack_grow (&contents, &val, sizeof (val)); | |
23317 | total_len += obstack_object_size (&addr_obstack); | |
23318 | ||
23319 | /* The offset of the symbol table from the start of the file. */ | |
23320 | val = MAYBE_SWAP (total_len); | |
23321 | obstack_grow (&contents, &val, sizeof (val)); | |
23322 | total_len += obstack_object_size (&symtab_obstack); | |
23323 | ||
23324 | /* The offset of the constant pool from the start of the file. */ | |
23325 | val = MAYBE_SWAP (total_len); | |
23326 | obstack_grow (&contents, &val, sizeof (val)); | |
23327 | total_len += obstack_object_size (&constant_pool); | |
23328 | ||
23329 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
23330 | ||
23331 | write_obstack (out_file, &contents); | |
23332 | write_obstack (out_file, &cu_list); | |
1fd400ff | 23333 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
23334 | write_obstack (out_file, &addr_obstack); |
23335 | write_obstack (out_file, &symtab_obstack); | |
23336 | write_obstack (out_file, &constant_pool); | |
23337 | ||
23338 | fclose (out_file); | |
23339 | ||
23340 | /* We want to keep the file, so we set cleanup_filename to NULL | |
23341 | here. See unlink_if_set. */ | |
23342 | cleanup_filename = NULL; | |
23343 | ||
23344 | do_cleanups (cleanup); | |
23345 | } | |
23346 | ||
90476074 TT |
23347 | /* Implementation of the `save gdb-index' command. |
23348 | ||
23349 | Note that the file format used by this command is documented in the | |
23350 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 23351 | |
9291a0cd TT |
23352 | static void |
23353 | save_gdb_index_command (char *arg, int from_tty) | |
23354 | { | |
23355 | struct objfile *objfile; | |
23356 | ||
23357 | if (!arg || !*arg) | |
96d19272 | 23358 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
23359 | |
23360 | ALL_OBJFILES (objfile) | |
23361 | { | |
23362 | struct stat st; | |
23363 | ||
23364 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 23365 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
23366 | continue; |
23367 | ||
23368 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
23369 | if (dwarf2_per_objfile) | |
23370 | { | |
9291a0cd | 23371 | |
492d29ea | 23372 | TRY |
9291a0cd TT |
23373 | { |
23374 | write_psymtabs_to_index (objfile, arg); | |
23375 | } | |
492d29ea PA |
23376 | CATCH (except, RETURN_MASK_ERROR) |
23377 | { | |
23378 | exception_fprintf (gdb_stderr, except, | |
23379 | _("Error while writing index for `%s': "), | |
23380 | objfile_name (objfile)); | |
23381 | } | |
23382 | END_CATCH | |
9291a0cd TT |
23383 | } |
23384 | } | |
dce234bc PP |
23385 | } |
23386 | ||
9291a0cd TT |
23387 | \f |
23388 | ||
b4f54984 | 23389 | int dwarf_always_disassemble; |
9eae7c52 TT |
23390 | |
23391 | static void | |
b4f54984 DE |
23392 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
23393 | struct cmd_list_element *c, const char *value) | |
9eae7c52 | 23394 | { |
3e43a32a MS |
23395 | fprintf_filtered (file, |
23396 | _("Whether to always disassemble " | |
23397 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
23398 | value); |
23399 | } | |
23400 | ||
900e11f9 JK |
23401 | static void |
23402 | show_check_physname (struct ui_file *file, int from_tty, | |
23403 | struct cmd_list_element *c, const char *value) | |
23404 | { | |
23405 | fprintf_filtered (file, | |
23406 | _("Whether to check \"physname\" is %s.\n"), | |
23407 | value); | |
23408 | } | |
23409 | ||
6502dd73 DJ |
23410 | void _initialize_dwarf2_read (void); |
23411 | ||
23412 | void | |
23413 | _initialize_dwarf2_read (void) | |
23414 | { | |
96d19272 JK |
23415 | struct cmd_list_element *c; |
23416 | ||
dce234bc | 23417 | dwarf2_objfile_data_key |
c1bd65d0 | 23418 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 23419 | |
b4f54984 DE |
23420 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
23421 | Set DWARF specific variables.\n\ | |
23422 | Configure DWARF variables such as the cache size"), | |
23423 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
ae038cb0 DJ |
23424 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
23425 | ||
b4f54984 DE |
23426 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
23427 | Show DWARF specific variables\n\ | |
23428 | Show DWARF variables such as the cache size"), | |
23429 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
ae038cb0 DJ |
23430 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
23431 | ||
23432 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
b4f54984 DE |
23433 | &dwarf_max_cache_age, _("\ |
23434 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
23435 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
7915a72c AC |
23436 | A higher limit means that cached compilation units will be stored\n\ |
23437 | in memory longer, and more total memory will be used. Zero disables\n\ | |
23438 | caching, which can slow down startup."), | |
2c5b56ce | 23439 | NULL, |
b4f54984 DE |
23440 | show_dwarf_max_cache_age, |
23441 | &set_dwarf_cmdlist, | |
23442 | &show_dwarf_cmdlist); | |
d97bc12b | 23443 | |
9eae7c52 | 23444 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
b4f54984 | 23445 | &dwarf_always_disassemble, _("\ |
9eae7c52 TT |
23446 | Set whether `info address' always disassembles DWARF expressions."), _("\ |
23447 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
23448 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
23449 | syntax. When disabled, expressions will be printed in a more\n\ | |
23450 | conversational style, when possible."), | |
23451 | NULL, | |
b4f54984 DE |
23452 | show_dwarf_always_disassemble, |
23453 | &set_dwarf_cmdlist, | |
23454 | &show_dwarf_cmdlist); | |
23455 | ||
23456 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ | |
23457 | Set debugging of the DWARF reader."), _("\ | |
23458 | Show debugging of the DWARF reader."), _("\ | |
23459 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
73be47f5 DE |
23460 | reading and symtab expansion. A value of 1 (one) provides basic\n\ |
23461 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
23462 | NULL, |
23463 | NULL, | |
23464 | &setdebuglist, &showdebuglist); | |
23465 | ||
b4f54984 DE |
23466 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
23467 | Set debugging of the DWARF DIE reader."), _("\ | |
23468 | Show debugging of the DWARF DIE reader."), _("\ | |
d97bc12b DE |
23469 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ |
23470 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
23471 | NULL, |
23472 | NULL, | |
23473 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23474 | |
27e0867f DE |
23475 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
23476 | Set debugging of the dwarf line reader."), _("\ | |
23477 | Show debugging of the dwarf line reader."), _("\ | |
23478 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
23479 | A value of 1 (one) provides basic information.\n\ | |
23480 | A value greater than 1 provides more verbose information."), | |
23481 | NULL, | |
23482 | NULL, | |
23483 | &setdebuglist, &showdebuglist); | |
23484 | ||
900e11f9 JK |
23485 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
23486 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
23487 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
23488 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
23489 | the demangler."), | |
23490 | NULL, show_check_physname, | |
23491 | &setdebuglist, &showdebuglist); | |
23492 | ||
e615022a DE |
23493 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
23494 | no_class, &use_deprecated_index_sections, _("\ | |
23495 | Set whether to use deprecated gdb_index sections."), _("\ | |
23496 | Show whether to use deprecated gdb_index sections."), _("\ | |
23497 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
23498 | Normally they are ignored either because of a missing feature or\n\ | |
23499 | performance issue.\n\ | |
23500 | Warning: This option must be enabled before gdb reads the file."), | |
23501 | NULL, | |
23502 | NULL, | |
23503 | &setlist, &showlist); | |
23504 | ||
96d19272 | 23505 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 23506 | _("\ |
fc1a9d6e | 23507 | Save a gdb-index file.\n\ |
11570e71 | 23508 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
23509 | &save_cmdlist); |
23510 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
23511 | |
23512 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23513 | &dwarf2_locexpr_funcs); | |
23514 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23515 | &dwarf2_loclist_funcs); | |
23516 | ||
23517 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23518 | &dwarf2_block_frame_base_locexpr_funcs); | |
23519 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23520 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 23521 | } |