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 | |
72dca2f5 FR |
2244 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
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 | |
2977 | || current_language->la_language == language_fortran) | |
2978 | { | |
2979 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2980 | not contain any. */ | |
a8719064 | 2981 | |
72998fb3 | 2982 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2983 | { |
72998fb3 | 2984 | char *without_params = cp_remove_params (name); |
0cf03b49 | 2985 | |
72998fb3 DE |
2986 | if (without_params != NULL) |
2987 | { | |
2988 | make_cleanup (xfree, without_params); | |
2989 | name = without_params; | |
2990 | } | |
0cf03b49 JK |
2991 | } |
2992 | } | |
2993 | ||
559a7a62 | 2994 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2995 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2996 | simulate our NAME being searched is also lowercased. */ |
2997 | hash = mapped_index_string_hash ((index->version == 4 | |
2998 | && case_sensitivity == case_sensitive_off | |
2999 | ? 5 : index->version), | |
3000 | name); | |
3001 | ||
3876f04e DE |
3002 | slot = hash & (index->symbol_table_slots - 1); |
3003 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 3004 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3005 | |
3006 | for (;;) | |
3007 | { | |
3008 | /* Convert a slot number to an offset into the table. */ | |
3009 | offset_type i = 2 * slot; | |
3010 | const char *str; | |
3876f04e | 3011 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
3012 | { |
3013 | do_cleanups (back_to); | |
3014 | return 0; | |
3015 | } | |
9291a0cd | 3016 | |
3876f04e | 3017 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 3018 | if (!cmp (name, str)) |
9291a0cd TT |
3019 | { |
3020 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 3021 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 3022 | do_cleanups (back_to); |
9291a0cd TT |
3023 | return 1; |
3024 | } | |
3025 | ||
3876f04e | 3026 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
3027 | } |
3028 | } | |
3029 | ||
2ec9a5e0 TT |
3030 | /* A helper function that reads the .gdb_index from SECTION and fills |
3031 | in MAP. FILENAME is the name of the file containing the section; | |
3032 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
3033 | ok to use deprecated sections. | |
3034 | ||
3035 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3036 | out parameters that are filled in with information about the CU and | |
3037 | TU lists in the section. | |
3038 | ||
3039 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3040 | |
9291a0cd | 3041 | static int |
2ec9a5e0 TT |
3042 | read_index_from_section (struct objfile *objfile, |
3043 | const char *filename, | |
3044 | int deprecated_ok, | |
3045 | struct dwarf2_section_info *section, | |
3046 | struct mapped_index *map, | |
3047 | const gdb_byte **cu_list, | |
3048 | offset_type *cu_list_elements, | |
3049 | const gdb_byte **types_list, | |
3050 | offset_type *types_list_elements) | |
9291a0cd | 3051 | { |
948f8e3d | 3052 | const gdb_byte *addr; |
2ec9a5e0 | 3053 | offset_type version; |
b3b272e1 | 3054 | offset_type *metadata; |
1fd400ff | 3055 | int i; |
9291a0cd | 3056 | |
2ec9a5e0 | 3057 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3058 | return 0; |
82430852 JK |
3059 | |
3060 | /* Older elfutils strip versions could keep the section in the main | |
3061 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3062 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3063 | return 0; |
3064 | ||
2ec9a5e0 | 3065 | dwarf2_read_section (objfile, section); |
9291a0cd | 3066 | |
2ec9a5e0 | 3067 | addr = section->buffer; |
9291a0cd | 3068 | /* Version check. */ |
1fd400ff | 3069 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3070 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3071 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3072 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3073 | indices. */ |
831adc1f | 3074 | if (version < 4) |
481860b3 GB |
3075 | { |
3076 | static int warning_printed = 0; | |
3077 | if (!warning_printed) | |
3078 | { | |
3079 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3080 | filename); |
481860b3 GB |
3081 | warning_printed = 1; |
3082 | } | |
3083 | return 0; | |
3084 | } | |
3085 | /* Index version 4 uses a different hash function than index version | |
3086 | 5 and later. | |
3087 | ||
3088 | Versions earlier than 6 did not emit psymbols for inlined | |
3089 | functions. Using these files will cause GDB not to be able to | |
3090 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3091 | indices unless the user has done |
3092 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3093 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3094 | { |
3095 | static int warning_printed = 0; | |
3096 | if (!warning_printed) | |
3097 | { | |
e615022a DE |
3098 | warning (_("\ |
3099 | Skipping deprecated .gdb_index section in %s.\n\ | |
3100 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3101 | to use the section anyway."), | |
2ec9a5e0 | 3102 | filename); |
481860b3 GB |
3103 | warning_printed = 1; |
3104 | } | |
3105 | return 0; | |
3106 | } | |
796a7ff8 | 3107 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3108 | of the TU (for symbols coming from TUs), |
3109 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3110 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3111 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3112 | These are just performance bugs, and we can't distinguish gdb-generated | |
3113 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3114 | |
481860b3 | 3115 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3116 | longer backward compatible. */ |
796a7ff8 | 3117 | if (version > 8) |
594e8718 | 3118 | return 0; |
9291a0cd | 3119 | |
559a7a62 | 3120 | map->version = version; |
2ec9a5e0 | 3121 | map->total_size = section->size; |
9291a0cd TT |
3122 | |
3123 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3124 | |
3125 | i = 0; | |
2ec9a5e0 TT |
3126 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3127 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3128 | / 8); | |
1fd400ff TT |
3129 | ++i; |
3130 | ||
2ec9a5e0 TT |
3131 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3132 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3133 | - MAYBE_SWAP (metadata[i])) | |
3134 | / 8); | |
987d643c | 3135 | ++i; |
1fd400ff TT |
3136 | |
3137 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3138 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3139 | - MAYBE_SWAP (metadata[i])); | |
3140 | ++i; | |
3141 | ||
3876f04e DE |
3142 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3143 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3144 | - MAYBE_SWAP (metadata[i])) | |
3145 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3146 | ++i; |
9291a0cd | 3147 | |
f9d83a0b | 3148 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3149 | |
2ec9a5e0 TT |
3150 | return 1; |
3151 | } | |
3152 | ||
3153 | ||
3154 | /* Read the index file. If everything went ok, initialize the "quick" | |
3155 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
3156 | ||
3157 | static int | |
3158 | dwarf2_read_index (struct objfile *objfile) | |
3159 | { | |
3160 | struct mapped_index local_map, *map; | |
3161 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3162 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3163 | struct dwz_file *dwz; |
2ec9a5e0 | 3164 | |
4262abfb | 3165 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3166 | use_deprecated_index_sections, |
3167 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3168 | &cu_list, &cu_list_elements, | |
3169 | &types_list, &types_list_elements)) | |
3170 | return 0; | |
3171 | ||
0fefef59 | 3172 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3173 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3174 | return 0; |
3175 | ||
2ec9a5e0 TT |
3176 | /* If there is a .dwz file, read it so we can get its CU list as |
3177 | well. */ | |
4db1a1dc TT |
3178 | dwz = dwarf2_get_dwz_file (); |
3179 | if (dwz != NULL) | |
2ec9a5e0 | 3180 | { |
2ec9a5e0 TT |
3181 | struct mapped_index dwz_map; |
3182 | const gdb_byte *dwz_types_ignore; | |
3183 | offset_type dwz_types_elements_ignore; | |
3184 | ||
3185 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3186 | 1, | |
3187 | &dwz->gdb_index, &dwz_map, | |
3188 | &dwz_list, &dwz_list_elements, | |
3189 | &dwz_types_ignore, | |
3190 | &dwz_types_elements_ignore)) | |
3191 | { | |
3192 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3193 | bfd_get_filename (dwz->dwz_bfd)); | |
3194 | return 0; | |
3195 | } | |
3196 | } | |
3197 | ||
74a0d9f6 JK |
3198 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3199 | dwz_list_elements); | |
1fd400ff | 3200 | |
8b70b953 TT |
3201 | if (types_list_elements) |
3202 | { | |
3203 | struct dwarf2_section_info *section; | |
3204 | ||
3205 | /* We can only handle a single .debug_types when we have an | |
3206 | index. */ | |
3207 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3208 | return 0; | |
3209 | ||
3210 | section = VEC_index (dwarf2_section_info_def, | |
3211 | dwarf2_per_objfile->types, 0); | |
3212 | ||
74a0d9f6 JK |
3213 | create_signatured_type_table_from_index (objfile, section, types_list, |
3214 | types_list_elements); | |
8b70b953 | 3215 | } |
9291a0cd | 3216 | |
2ec9a5e0 TT |
3217 | create_addrmap_from_index (objfile, &local_map); |
3218 | ||
3219 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
3220 | *map = local_map; | |
9291a0cd TT |
3221 | |
3222 | dwarf2_per_objfile->index_table = map; | |
3223 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3224 | dwarf2_per_objfile->quick_file_names_table = |
3225 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3226 | |
3227 | return 1; | |
3228 | } | |
3229 | ||
3230 | /* A helper for the "quick" functions which sets the global | |
3231 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3232 | |
9291a0cd TT |
3233 | static void |
3234 | dw2_setup (struct objfile *objfile) | |
3235 | { | |
3236 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
3237 | gdb_assert (dwarf2_per_objfile); | |
3238 | } | |
3239 | ||
dee91e82 | 3240 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3241 | |
dee91e82 DE |
3242 | static void |
3243 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3244 | const gdb_byte *info_ptr, |
dee91e82 DE |
3245 | struct die_info *comp_unit_die, |
3246 | int has_children, | |
3247 | void *data) | |
9291a0cd | 3248 | { |
dee91e82 DE |
3249 | struct dwarf2_cu *cu = reader->cu; |
3250 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3251 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3252 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 3253 | struct line_header *lh; |
9291a0cd | 3254 | struct attribute *attr; |
dee91e82 | 3255 | int i; |
15d034d0 | 3256 | const char *name, *comp_dir; |
7b9f3c50 DE |
3257 | void **slot; |
3258 | struct quick_file_names *qfn; | |
3259 | unsigned int line_offset; | |
9291a0cd | 3260 | |
0186c6a7 DE |
3261 | gdb_assert (! this_cu->is_debug_types); |
3262 | ||
07261596 TT |
3263 | /* Our callers never want to match partial units -- instead they |
3264 | will match the enclosing full CU. */ | |
3265 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3266 | { | |
3267 | this_cu->v.quick->no_file_data = 1; | |
3268 | return; | |
3269 | } | |
3270 | ||
0186c6a7 | 3271 | lh_cu = this_cu; |
7b9f3c50 DE |
3272 | lh = NULL; |
3273 | slot = NULL; | |
3274 | line_offset = 0; | |
dee91e82 DE |
3275 | |
3276 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
3277 | if (attr) |
3278 | { | |
7b9f3c50 DE |
3279 | struct quick_file_names find_entry; |
3280 | ||
3281 | line_offset = DW_UNSND (attr); | |
3282 | ||
3283 | /* We may have already read in this line header (TU line header sharing). | |
3284 | If we have we're done. */ | |
094b34ac DE |
3285 | find_entry.hash.dwo_unit = cu->dwo_unit; |
3286 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3287 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3288 | &find_entry, INSERT); | |
3289 | if (*slot != NULL) | |
3290 | { | |
094b34ac | 3291 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 3292 | return; |
7b9f3c50 DE |
3293 | } |
3294 | ||
3019eac3 | 3295 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3296 | } |
3297 | if (lh == NULL) | |
3298 | { | |
094b34ac | 3299 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3300 | return; |
9291a0cd TT |
3301 | } |
3302 | ||
7b9f3c50 | 3303 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
3304 | qfn->hash.dwo_unit = cu->dwo_unit; |
3305 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3306 | gdb_assert (slot != NULL); |
3307 | *slot = qfn; | |
9291a0cd | 3308 | |
dee91e82 | 3309 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 3310 | |
7b9f3c50 DE |
3311 | qfn->num_file_names = lh->num_file_names; |
3312 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
3313 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 3314 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
3315 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
3316 | qfn->real_names = NULL; | |
9291a0cd | 3317 | |
7b9f3c50 | 3318 | free_line_header (lh); |
7b9f3c50 | 3319 | |
094b34ac | 3320 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3321 | } |
3322 | ||
3323 | /* A helper for the "quick" functions which attempts to read the line | |
3324 | table for THIS_CU. */ | |
3325 | ||
3326 | static struct quick_file_names * | |
e4a48d9d | 3327 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3328 | { |
0186c6a7 DE |
3329 | /* This should never be called for TUs. */ |
3330 | gdb_assert (! this_cu->is_debug_types); | |
3331 | /* Nor type unit groups. */ | |
3332 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3333 | |
dee91e82 DE |
3334 | if (this_cu->v.quick->file_names != NULL) |
3335 | return this_cu->v.quick->file_names; | |
3336 | /* If we know there is no line data, no point in looking again. */ | |
3337 | if (this_cu->v.quick->no_file_data) | |
3338 | return NULL; | |
3339 | ||
0186c6a7 | 3340 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3341 | |
3342 | if (this_cu->v.quick->no_file_data) | |
3343 | return NULL; | |
3344 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3345 | } |
3346 | ||
3347 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3348 | real path for a given file name from the line table. */ |
2fdf6df6 | 3349 | |
9291a0cd | 3350 | static const char * |
7b9f3c50 DE |
3351 | dw2_get_real_path (struct objfile *objfile, |
3352 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3353 | { |
7b9f3c50 DE |
3354 | if (qfn->real_names == NULL) |
3355 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3356 | qfn->num_file_names, const char *); |
9291a0cd | 3357 | |
7b9f3c50 DE |
3358 | if (qfn->real_names[index] == NULL) |
3359 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 3360 | |
7b9f3c50 | 3361 | return qfn->real_names[index]; |
9291a0cd TT |
3362 | } |
3363 | ||
3364 | static struct symtab * | |
3365 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3366 | { | |
43f3e411 | 3367 | struct compunit_symtab *cust; |
9291a0cd | 3368 | int index; |
ae2de4f8 | 3369 | |
9291a0cd TT |
3370 | dw2_setup (objfile); |
3371 | index = dwarf2_per_objfile->n_comp_units - 1; | |
43f3e411 DE |
3372 | cust = dw2_instantiate_symtab (dw2_get_cutu (index)); |
3373 | if (cust == NULL) | |
3374 | return NULL; | |
3375 | return compunit_primary_filetab (cust); | |
9291a0cd TT |
3376 | } |
3377 | ||
7b9f3c50 DE |
3378 | /* Traversal function for dw2_forget_cached_source_info. */ |
3379 | ||
3380 | static int | |
3381 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3382 | { |
7b9f3c50 | 3383 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3384 | |
7b9f3c50 | 3385 | if (file_data->real_names) |
9291a0cd | 3386 | { |
7b9f3c50 | 3387 | int i; |
9291a0cd | 3388 | |
7b9f3c50 | 3389 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3390 | { |
7b9f3c50 DE |
3391 | xfree ((void*) file_data->real_names[i]); |
3392 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3393 | } |
3394 | } | |
7b9f3c50 DE |
3395 | |
3396 | return 1; | |
3397 | } | |
3398 | ||
3399 | static void | |
3400 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3401 | { | |
3402 | dw2_setup (objfile); | |
3403 | ||
3404 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3405 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3406 | } |
3407 | ||
f8eba3c6 TT |
3408 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3409 | the symtabs and calls the iterator. */ | |
3410 | ||
3411 | static int | |
3412 | dw2_map_expand_apply (struct objfile *objfile, | |
3413 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3414 | const char *name, const char *real_path, |
f8eba3c6 TT |
3415 | int (*callback) (struct symtab *, void *), |
3416 | void *data) | |
3417 | { | |
43f3e411 | 3418 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3419 | |
3420 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3421 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3422 | return 0; |
3423 | ||
3424 | /* This may expand more than one symtab, and we want to iterate over | |
3425 | all of them. */ | |
a0f42c21 | 3426 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3427 | |
f5b95b50 | 3428 | return iterate_over_some_symtabs (name, real_path, callback, data, |
43f3e411 | 3429 | objfile->compunit_symtabs, last_made); |
f8eba3c6 TT |
3430 | } |
3431 | ||
3432 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3433 | ||
9291a0cd | 3434 | static int |
f8eba3c6 | 3435 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3436 | const char *real_path, |
f8eba3c6 TT |
3437 | int (*callback) (struct symtab *, void *), |
3438 | void *data) | |
9291a0cd TT |
3439 | { |
3440 | int i; | |
c011a4f4 | 3441 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3442 | |
3443 | dw2_setup (objfile); | |
ae2de4f8 | 3444 | |
848e3e78 DE |
3445 | /* The rule is CUs specify all the files, including those used by |
3446 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3447 | |
848e3e78 | 3448 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3449 | { |
3450 | int j; | |
8832e7e3 | 3451 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3452 | struct quick_file_names *file_data; |
9291a0cd | 3453 | |
3d7bb9d9 | 3454 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3455 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3456 | continue; |
3457 | ||
e4a48d9d | 3458 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3459 | if (file_data == NULL) |
9291a0cd TT |
3460 | continue; |
3461 | ||
7b9f3c50 | 3462 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3463 | { |
7b9f3c50 | 3464 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3465 | const char *this_real_name; |
9291a0cd | 3466 | |
af529f8f | 3467 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3468 | { |
f5b95b50 | 3469 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3470 | callback, data)) |
3471 | return 1; | |
288e77a7 | 3472 | continue; |
4aac40c8 | 3473 | } |
9291a0cd | 3474 | |
c011a4f4 DE |
3475 | /* Before we invoke realpath, which can get expensive when many |
3476 | files are involved, do a quick comparison of the basenames. */ | |
3477 | if (! basenames_may_differ | |
3478 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3479 | continue; | |
3480 | ||
da235a7c JK |
3481 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3482 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3483 | { |
da235a7c JK |
3484 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3485 | callback, data)) | |
3486 | return 1; | |
288e77a7 | 3487 | continue; |
da235a7c | 3488 | } |
9291a0cd | 3489 | |
da235a7c JK |
3490 | if (real_path != NULL) |
3491 | { | |
af529f8f JK |
3492 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3493 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3494 | if (this_real_name != NULL |
af529f8f | 3495 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3496 | { |
f5b95b50 | 3497 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3498 | callback, data)) |
3499 | return 1; | |
288e77a7 | 3500 | continue; |
9291a0cd TT |
3501 | } |
3502 | } | |
3503 | } | |
3504 | } | |
3505 | ||
9291a0cd TT |
3506 | return 0; |
3507 | } | |
3508 | ||
da51c347 DE |
3509 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3510 | ||
3511 | struct dw2_symtab_iterator | |
9291a0cd | 3512 | { |
da51c347 DE |
3513 | /* The internalized form of .gdb_index. */ |
3514 | struct mapped_index *index; | |
3515 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3516 | int want_specific_block; | |
3517 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3518 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3519 | int block_index; | |
3520 | /* The kind of symbol we're looking for. */ | |
3521 | domain_enum domain; | |
3522 | /* The list of CUs from the index entry of the symbol, | |
3523 | or NULL if not found. */ | |
3524 | offset_type *vec; | |
3525 | /* The next element in VEC to look at. */ | |
3526 | int next; | |
3527 | /* The number of elements in VEC, or zero if there is no match. */ | |
3528 | int length; | |
8943b874 DE |
3529 | /* Have we seen a global version of the symbol? |
3530 | If so we can ignore all further global instances. | |
3531 | This is to work around gold/15646, inefficient gold-generated | |
3532 | indices. */ | |
3533 | int global_seen; | |
da51c347 | 3534 | }; |
9291a0cd | 3535 | |
da51c347 DE |
3536 | /* Initialize the index symtab iterator ITER. |
3537 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3538 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3539 | |
9291a0cd | 3540 | static void |
da51c347 DE |
3541 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3542 | struct mapped_index *index, | |
3543 | int want_specific_block, | |
3544 | int block_index, | |
3545 | domain_enum domain, | |
3546 | const char *name) | |
3547 | { | |
3548 | iter->index = index; | |
3549 | iter->want_specific_block = want_specific_block; | |
3550 | iter->block_index = block_index; | |
3551 | iter->domain = domain; | |
3552 | iter->next = 0; | |
8943b874 | 3553 | iter->global_seen = 0; |
da51c347 DE |
3554 | |
3555 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3556 | iter->length = MAYBE_SWAP (*iter->vec); | |
3557 | else | |
3558 | { | |
3559 | iter->vec = NULL; | |
3560 | iter->length = 0; | |
3561 | } | |
3562 | } | |
3563 | ||
3564 | /* Return the next matching CU or NULL if there are no more. */ | |
3565 | ||
3566 | static struct dwarf2_per_cu_data * | |
3567 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3568 | { | |
3569 | for ( ; iter->next < iter->length; ++iter->next) | |
3570 | { | |
3571 | offset_type cu_index_and_attrs = | |
3572 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3573 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 3574 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
3575 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3576 | /* This value is only valid for index versions >= 7. */ | |
3577 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3578 | gdb_index_symbol_kind symbol_kind = | |
3579 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3580 | /* Only check the symbol attributes if they're present. | |
3581 | Indices prior to version 7 don't record them, | |
3582 | and indices >= 7 may elide them for certain symbols | |
3583 | (gold does this). */ | |
3584 | int attrs_valid = | |
3585 | (iter->index->version >= 7 | |
3586 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3587 | ||
3190f0c6 DE |
3588 | /* Don't crash on bad data. */ |
3589 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3590 | + dwarf2_per_objfile->n_type_units)) | |
3591 | { | |
3592 | complaint (&symfile_complaints, | |
3593 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3594 | " [in module %s]"), |
3595 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3596 | continue; |
3597 | } | |
3598 | ||
8832e7e3 | 3599 | per_cu = dw2_get_cutu (cu_index); |
3190f0c6 | 3600 | |
da51c347 | 3601 | /* Skip if already read in. */ |
43f3e411 | 3602 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3603 | continue; |
3604 | ||
8943b874 DE |
3605 | /* Check static vs global. */ |
3606 | if (attrs_valid) | |
3607 | { | |
3608 | if (iter->want_specific_block | |
3609 | && want_static != is_static) | |
3610 | continue; | |
3611 | /* Work around gold/15646. */ | |
3612 | if (!is_static && iter->global_seen) | |
3613 | continue; | |
3614 | if (!is_static) | |
3615 | iter->global_seen = 1; | |
3616 | } | |
da51c347 DE |
3617 | |
3618 | /* Only check the symbol's kind if it has one. */ | |
3619 | if (attrs_valid) | |
3620 | { | |
3621 | switch (iter->domain) | |
3622 | { | |
3623 | case VAR_DOMAIN: | |
3624 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3625 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3626 | /* Some types are also in VAR_DOMAIN. */ | |
3627 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3628 | continue; | |
3629 | break; | |
3630 | case STRUCT_DOMAIN: | |
3631 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3632 | continue; | |
3633 | break; | |
3634 | case LABEL_DOMAIN: | |
3635 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3636 | continue; | |
3637 | break; | |
3638 | default: | |
3639 | break; | |
3640 | } | |
3641 | } | |
3642 | ||
3643 | ++iter->next; | |
3644 | return per_cu; | |
3645 | } | |
3646 | ||
3647 | return NULL; | |
3648 | } | |
3649 | ||
43f3e411 | 3650 | static struct compunit_symtab * |
da51c347 DE |
3651 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
3652 | const char *name, domain_enum domain) | |
9291a0cd | 3653 | { |
43f3e411 | 3654 | struct compunit_symtab *stab_best = NULL; |
156942c7 DE |
3655 | struct mapped_index *index; |
3656 | ||
9291a0cd TT |
3657 | dw2_setup (objfile); |
3658 | ||
156942c7 DE |
3659 | index = dwarf2_per_objfile->index_table; |
3660 | ||
da51c347 | 3661 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3662 | if (index) |
9291a0cd | 3663 | { |
da51c347 DE |
3664 | struct dw2_symtab_iterator iter; |
3665 | struct dwarf2_per_cu_data *per_cu; | |
3666 | ||
3667 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3668 | |
da51c347 | 3669 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3670 | { |
b2e2f908 | 3671 | struct symbol *sym, *with_opaque = NULL; |
43f3e411 DE |
3672 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); |
3673 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
f194fefb | 3674 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3675 | |
b2e2f908 DE |
3676 | sym = block_find_symbol (block, name, domain, |
3677 | block_find_non_opaque_type_preferred, | |
3678 | &with_opaque); | |
3679 | ||
da51c347 DE |
3680 | /* Some caution must be observed with overloaded functions |
3681 | and methods, since the index will not contain any overload | |
3682 | information (but NAME might contain it). */ | |
da51c347 | 3683 | |
b2e2f908 DE |
3684 | if (sym != NULL |
3685 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
3686 | return stab; | |
3687 | if (with_opaque != NULL | |
3688 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
3689 | stab_best = stab; | |
da51c347 DE |
3690 | |
3691 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3692 | } |
3693 | } | |
9291a0cd | 3694 | |
da51c347 | 3695 | return stab_best; |
9291a0cd TT |
3696 | } |
3697 | ||
3698 | static void | |
3699 | dw2_print_stats (struct objfile *objfile) | |
3700 | { | |
e4a48d9d | 3701 | int i, total, count; |
9291a0cd TT |
3702 | |
3703 | dw2_setup (objfile); | |
e4a48d9d | 3704 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3705 | count = 0; |
e4a48d9d | 3706 | for (i = 0; i < total; ++i) |
9291a0cd | 3707 | { |
8832e7e3 | 3708 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3709 | |
43f3e411 | 3710 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3711 | ++count; |
3712 | } | |
e4a48d9d | 3713 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3714 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3715 | } | |
3716 | ||
779bd270 DE |
3717 | /* This dumps minimal information about the index. |
3718 | It is called via "mt print objfiles". | |
3719 | One use is to verify .gdb_index has been loaded by the | |
3720 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3721 | ||
9291a0cd TT |
3722 | static void |
3723 | dw2_dump (struct objfile *objfile) | |
3724 | { | |
779bd270 DE |
3725 | dw2_setup (objfile); |
3726 | gdb_assert (dwarf2_per_objfile->using_index); | |
3727 | printf_filtered (".gdb_index:"); | |
3728 | if (dwarf2_per_objfile->index_table != NULL) | |
3729 | { | |
3730 | printf_filtered (" version %d\n", | |
3731 | dwarf2_per_objfile->index_table->version); | |
3732 | } | |
3733 | else | |
3734 | printf_filtered (" faked for \"readnow\"\n"); | |
3735 | printf_filtered ("\n"); | |
9291a0cd TT |
3736 | } |
3737 | ||
3738 | static void | |
3189cb12 DE |
3739 | dw2_relocate (struct objfile *objfile, |
3740 | const struct section_offsets *new_offsets, | |
3741 | const struct section_offsets *delta) | |
9291a0cd TT |
3742 | { |
3743 | /* There's nothing to relocate here. */ | |
3744 | } | |
3745 | ||
3746 | static void | |
3747 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3748 | const char *func_name) | |
3749 | { | |
da51c347 DE |
3750 | struct mapped_index *index; |
3751 | ||
3752 | dw2_setup (objfile); | |
3753 | ||
3754 | index = dwarf2_per_objfile->index_table; | |
3755 | ||
3756 | /* index is NULL if OBJF_READNOW. */ | |
3757 | if (index) | |
3758 | { | |
3759 | struct dw2_symtab_iterator iter; | |
3760 | struct dwarf2_per_cu_data *per_cu; | |
3761 | ||
3762 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3763 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3764 | func_name); | |
3765 | ||
3766 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3767 | dw2_instantiate_symtab (per_cu); | |
3768 | } | |
9291a0cd TT |
3769 | } |
3770 | ||
3771 | static void | |
3772 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3773 | { | |
3774 | int i; | |
3775 | ||
3776 | dw2_setup (objfile); | |
1fd400ff TT |
3777 | |
3778 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3779 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3780 | { |
8832e7e3 | 3781 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3782 | |
a0f42c21 | 3783 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3784 | } |
3785 | } | |
3786 | ||
3787 | static void | |
652a8996 JK |
3788 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3789 | const char *fullname) | |
9291a0cd TT |
3790 | { |
3791 | int i; | |
3792 | ||
3793 | dw2_setup (objfile); | |
d4637a04 DE |
3794 | |
3795 | /* We don't need to consider type units here. | |
3796 | This is only called for examining code, e.g. expand_line_sal. | |
3797 | There can be an order of magnitude (or more) more type units | |
3798 | than comp units, and we avoid them if we can. */ | |
3799 | ||
3800 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3801 | { |
3802 | int j; | |
8832e7e3 | 3803 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
7b9f3c50 | 3804 | struct quick_file_names *file_data; |
9291a0cd | 3805 | |
3d7bb9d9 | 3806 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3807 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3808 | continue; |
3809 | ||
e4a48d9d | 3810 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3811 | if (file_data == NULL) |
9291a0cd TT |
3812 | continue; |
3813 | ||
7b9f3c50 | 3814 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3815 | { |
652a8996 JK |
3816 | const char *this_fullname = file_data->file_names[j]; |
3817 | ||
3818 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3819 | { |
a0f42c21 | 3820 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3821 | break; |
3822 | } | |
3823 | } | |
3824 | } | |
3825 | } | |
3826 | ||
9291a0cd | 3827 | static void |
ade7ed9e | 3828 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 3829 | const char * name, domain_enum domain, |
ade7ed9e | 3830 | int global, |
40658b94 PH |
3831 | int (*callback) (struct block *, |
3832 | struct symbol *, void *), | |
2edb89d3 JK |
3833 | void *data, symbol_compare_ftype *match, |
3834 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3835 | { |
40658b94 | 3836 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3837 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3838 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3839 | } |
3840 | ||
3841 | static void | |
f8eba3c6 TT |
3842 | dw2_expand_symtabs_matching |
3843 | (struct objfile *objfile, | |
206f2a57 DE |
3844 | expand_symtabs_file_matcher_ftype *file_matcher, |
3845 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, | |
276d885b | 3846 | expand_symtabs_exp_notify_ftype *expansion_notify, |
f8eba3c6 TT |
3847 | enum search_domain kind, |
3848 | void *data) | |
9291a0cd TT |
3849 | { |
3850 | int i; | |
3851 | offset_type iter; | |
4b5246aa | 3852 | struct mapped_index *index; |
9291a0cd TT |
3853 | |
3854 | dw2_setup (objfile); | |
ae2de4f8 DE |
3855 | |
3856 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3857 | if (!dwarf2_per_objfile->index_table) |
3858 | return; | |
4b5246aa | 3859 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3860 | |
7b08b9eb | 3861 | if (file_matcher != NULL) |
24c79950 TT |
3862 | { |
3863 | struct cleanup *cleanup; | |
3864 | htab_t visited_found, visited_not_found; | |
3865 | ||
3866 | visited_found = htab_create_alloc (10, | |
3867 | htab_hash_pointer, htab_eq_pointer, | |
3868 | NULL, xcalloc, xfree); | |
3869 | cleanup = make_cleanup_htab_delete (visited_found); | |
3870 | visited_not_found = htab_create_alloc (10, | |
3871 | htab_hash_pointer, htab_eq_pointer, | |
3872 | NULL, xcalloc, xfree); | |
3873 | make_cleanup_htab_delete (visited_not_found); | |
3874 | ||
848e3e78 DE |
3875 | /* The rule is CUs specify all the files, including those used by |
3876 | any TU, so there's no need to scan TUs here. */ | |
3877 | ||
3878 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3879 | { |
3880 | int j; | |
8832e7e3 | 3881 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
24c79950 TT |
3882 | struct quick_file_names *file_data; |
3883 | void **slot; | |
7b08b9eb | 3884 | |
61d96d7e DE |
3885 | QUIT; |
3886 | ||
24c79950 | 3887 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3888 | |
24c79950 | 3889 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3890 | if (per_cu->v.quick->compunit_symtab) |
24c79950 | 3891 | continue; |
7b08b9eb | 3892 | |
e4a48d9d | 3893 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3894 | if (file_data == NULL) |
3895 | continue; | |
7b08b9eb | 3896 | |
24c79950 TT |
3897 | if (htab_find (visited_not_found, file_data) != NULL) |
3898 | continue; | |
3899 | else if (htab_find (visited_found, file_data) != NULL) | |
3900 | { | |
3901 | per_cu->v.quick->mark = 1; | |
3902 | continue; | |
3903 | } | |
3904 | ||
3905 | for (j = 0; j < file_data->num_file_names; ++j) | |
3906 | { | |
da235a7c JK |
3907 | const char *this_real_name; |
3908 | ||
fbd9ab74 | 3909 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3910 | { |
3911 | per_cu->v.quick->mark = 1; | |
3912 | break; | |
3913 | } | |
da235a7c JK |
3914 | |
3915 | /* Before we invoke realpath, which can get expensive when many | |
3916 | files are involved, do a quick comparison of the basenames. */ | |
3917 | if (!basenames_may_differ | |
3918 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3919 | data, 1)) | |
3920 | continue; | |
3921 | ||
3922 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3923 | if (file_matcher (this_real_name, data, 0)) | |
3924 | { | |
3925 | per_cu->v.quick->mark = 1; | |
3926 | break; | |
3927 | } | |
24c79950 TT |
3928 | } |
3929 | ||
3930 | slot = htab_find_slot (per_cu->v.quick->mark | |
3931 | ? visited_found | |
3932 | : visited_not_found, | |
3933 | file_data, INSERT); | |
3934 | *slot = file_data; | |
3935 | } | |
3936 | ||
3937 | do_cleanups (cleanup); | |
3938 | } | |
9291a0cd | 3939 | |
3876f04e | 3940 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3941 | { |
3942 | offset_type idx = 2 * iter; | |
3943 | const char *name; | |
3944 | offset_type *vec, vec_len, vec_idx; | |
8943b874 | 3945 | int global_seen = 0; |
9291a0cd | 3946 | |
61d96d7e DE |
3947 | QUIT; |
3948 | ||
3876f04e | 3949 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3950 | continue; |
3951 | ||
3876f04e | 3952 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3953 | |
206f2a57 | 3954 | if (! (*symbol_matcher) (name, data)) |
9291a0cd TT |
3955 | continue; |
3956 | ||
3957 | /* The name was matched, now expand corresponding CUs that were | |
3958 | marked. */ | |
4b5246aa | 3959 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3960 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3961 | vec_len = MAYBE_SWAP (vec[0]); |
3962 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3963 | { | |
e254ef6a | 3964 | struct dwarf2_per_cu_data *per_cu; |
156942c7 | 3965 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
8943b874 DE |
3966 | /* This value is only valid for index versions >= 7. */ |
3967 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
156942c7 DE |
3968 | gdb_index_symbol_kind symbol_kind = |
3969 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3970 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 DE |
3971 | /* Only check the symbol attributes if they're present. |
3972 | Indices prior to version 7 don't record them, | |
3973 | and indices >= 7 may elide them for certain symbols | |
3974 | (gold does this). */ | |
3975 | int attrs_valid = | |
3976 | (index->version >= 7 | |
3977 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3978 | ||
8943b874 DE |
3979 | /* Work around gold/15646. */ |
3980 | if (attrs_valid) | |
3981 | { | |
3982 | if (!is_static && global_seen) | |
3983 | continue; | |
3984 | if (!is_static) | |
3985 | global_seen = 1; | |
3986 | } | |
3987 | ||
3190f0c6 DE |
3988 | /* Only check the symbol's kind if it has one. */ |
3989 | if (attrs_valid) | |
156942c7 DE |
3990 | { |
3991 | switch (kind) | |
3992 | { | |
3993 | case VARIABLES_DOMAIN: | |
3994 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3995 | continue; | |
3996 | break; | |
3997 | case FUNCTIONS_DOMAIN: | |
3998 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3999 | continue; | |
4000 | break; | |
4001 | case TYPES_DOMAIN: | |
4002 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4003 | continue; | |
4004 | break; | |
4005 | default: | |
4006 | break; | |
4007 | } | |
4008 | } | |
4009 | ||
3190f0c6 DE |
4010 | /* Don't crash on bad data. */ |
4011 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
4012 | + dwarf2_per_objfile->n_type_units)) | |
4013 | { | |
4014 | complaint (&symfile_complaints, | |
4015 | _(".gdb_index entry has bad CU index" | |
4262abfb | 4016 | " [in module %s]"), objfile_name (objfile)); |
3190f0c6 DE |
4017 | continue; |
4018 | } | |
4019 | ||
8832e7e3 | 4020 | per_cu = dw2_get_cutu (cu_index); |
7b08b9eb | 4021 | if (file_matcher == NULL || per_cu->v.quick->mark) |
276d885b GB |
4022 | { |
4023 | int symtab_was_null = | |
4024 | (per_cu->v.quick->compunit_symtab == NULL); | |
4025 | ||
4026 | dw2_instantiate_symtab (per_cu); | |
4027 | ||
4028 | if (expansion_notify != NULL | |
4029 | && symtab_was_null | |
4030 | && per_cu->v.quick->compunit_symtab != NULL) | |
4031 | { | |
4032 | expansion_notify (per_cu->v.quick->compunit_symtab, | |
4033 | data); | |
4034 | } | |
4035 | } | |
9291a0cd TT |
4036 | } |
4037 | } | |
4038 | } | |
4039 | ||
43f3e411 | 4040 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific |
9703b513 TT |
4041 | symtab. */ |
4042 | ||
43f3e411 DE |
4043 | static struct compunit_symtab * |
4044 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4045 | CORE_ADDR pc) | |
9703b513 TT |
4046 | { |
4047 | int i; | |
4048 | ||
43f3e411 DE |
4049 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL |
4050 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4051 | return cust; | |
9703b513 | 4052 | |
43f3e411 | 4053 | if (cust->includes == NULL) |
a3ec0bb1 DE |
4054 | return NULL; |
4055 | ||
43f3e411 | 4056 | for (i = 0; cust->includes[i]; ++i) |
9703b513 | 4057 | { |
43f3e411 | 4058 | struct compunit_symtab *s = cust->includes[i]; |
9703b513 | 4059 | |
43f3e411 | 4060 | s = recursively_find_pc_sect_compunit_symtab (s, pc); |
9703b513 TT |
4061 | if (s != NULL) |
4062 | return s; | |
4063 | } | |
4064 | ||
4065 | return NULL; | |
4066 | } | |
4067 | ||
43f3e411 DE |
4068 | static struct compunit_symtab * |
4069 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4070 | struct bound_minimal_symbol msymbol, | |
4071 | CORE_ADDR pc, | |
4072 | struct obj_section *section, | |
4073 | int warn_if_readin) | |
9291a0cd TT |
4074 | { |
4075 | struct dwarf2_per_cu_data *data; | |
43f3e411 | 4076 | struct compunit_symtab *result; |
9291a0cd TT |
4077 | |
4078 | dw2_setup (objfile); | |
4079 | ||
4080 | if (!objfile->psymtabs_addrmap) | |
4081 | return NULL; | |
4082 | ||
4083 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
4084 | if (!data) | |
4085 | return NULL; | |
4086 | ||
43f3e411 | 4087 | if (warn_if_readin && data->v.quick->compunit_symtab) |
abebb8b0 | 4088 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
4089 | paddress (get_objfile_arch (objfile), pc)); |
4090 | ||
43f3e411 DE |
4091 | result |
4092 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
4093 | pc); | |
9703b513 TT |
4094 | gdb_assert (result != NULL); |
4095 | return result; | |
9291a0cd TT |
4096 | } |
4097 | ||
9291a0cd | 4098 | static void |
44b13c5a | 4099 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 4100 | void *data, int need_fullname) |
9291a0cd TT |
4101 | { |
4102 | int i; | |
24c79950 TT |
4103 | struct cleanup *cleanup; |
4104 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
4105 | NULL, xcalloc, xfree); | |
9291a0cd | 4106 | |
24c79950 | 4107 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 4108 | dw2_setup (objfile); |
ae2de4f8 | 4109 | |
848e3e78 DE |
4110 | /* The rule is CUs specify all the files, including those used by |
4111 | any TU, so there's no need to scan TUs here. | |
4112 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 4113 | |
848e3e78 | 4114 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 | 4115 | { |
8832e7e3 | 4116 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
24c79950 | 4117 | |
43f3e411 | 4118 | if (per_cu->v.quick->compunit_symtab) |
24c79950 TT |
4119 | { |
4120 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
4121 | INSERT); | |
4122 | ||
4123 | *slot = per_cu->v.quick->file_names; | |
4124 | } | |
4125 | } | |
4126 | ||
848e3e78 | 4127 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4128 | { |
4129 | int j; | |
8832e7e3 | 4130 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 4131 | struct quick_file_names *file_data; |
24c79950 | 4132 | void **slot; |
9291a0cd | 4133 | |
3d7bb9d9 | 4134 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4135 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4136 | continue; |
4137 | ||
e4a48d9d | 4138 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4139 | if (file_data == NULL) |
9291a0cd TT |
4140 | continue; |
4141 | ||
24c79950 TT |
4142 | slot = htab_find_slot (visited, file_data, INSERT); |
4143 | if (*slot) | |
4144 | { | |
4145 | /* Already visited. */ | |
4146 | continue; | |
4147 | } | |
4148 | *slot = file_data; | |
4149 | ||
7b9f3c50 | 4150 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4151 | { |
74e2f255 DE |
4152 | const char *this_real_name; |
4153 | ||
4154 | if (need_fullname) | |
4155 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4156 | else | |
4157 | this_real_name = NULL; | |
7b9f3c50 | 4158 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
4159 | } |
4160 | } | |
24c79950 TT |
4161 | |
4162 | do_cleanups (cleanup); | |
9291a0cd TT |
4163 | } |
4164 | ||
4165 | static int | |
4166 | dw2_has_symbols (struct objfile *objfile) | |
4167 | { | |
4168 | return 1; | |
4169 | } | |
4170 | ||
4171 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4172 | { | |
4173 | dw2_has_symbols, | |
4174 | dw2_find_last_source_symtab, | |
4175 | dw2_forget_cached_source_info, | |
f8eba3c6 | 4176 | dw2_map_symtabs_matching_filename, |
9291a0cd | 4177 | dw2_lookup_symbol, |
9291a0cd TT |
4178 | dw2_print_stats, |
4179 | dw2_dump, | |
4180 | dw2_relocate, | |
4181 | dw2_expand_symtabs_for_function, | |
4182 | dw2_expand_all_symtabs, | |
652a8996 | 4183 | dw2_expand_symtabs_with_fullname, |
40658b94 | 4184 | dw2_map_matching_symbols, |
9291a0cd | 4185 | dw2_expand_symtabs_matching, |
43f3e411 | 4186 | dw2_find_pc_sect_compunit_symtab, |
9291a0cd TT |
4187 | dw2_map_symbol_filenames |
4188 | }; | |
4189 | ||
4190 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
4191 | file will use psymtabs, or 1 if using the GNU index. */ | |
4192 | ||
4193 | int | |
4194 | dwarf2_initialize_objfile (struct objfile *objfile) | |
4195 | { | |
4196 | /* If we're about to read full symbols, don't bother with the | |
4197 | indices. In this case we also don't care if some other debug | |
4198 | format is making psymtabs, because they are all about to be | |
4199 | expanded anyway. */ | |
4200 | if ((objfile->flags & OBJF_READNOW)) | |
4201 | { | |
4202 | int i; | |
4203 | ||
4204 | dwarf2_per_objfile->using_index = 1; | |
4205 | create_all_comp_units (objfile); | |
0e50663e | 4206 | create_all_type_units (objfile); |
7b9f3c50 DE |
4207 | dwarf2_per_objfile->quick_file_names_table = |
4208 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 4209 | |
1fd400ff | 4210 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 4211 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4212 | { |
8832e7e3 | 4213 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 4214 | |
e254ef6a DE |
4215 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
4216 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
4217 | } |
4218 | ||
4219 | /* Return 1 so that gdb sees the "quick" functions. However, | |
4220 | these functions will be no-ops because we will have expanded | |
4221 | all symtabs. */ | |
4222 | return 1; | |
4223 | } | |
4224 | ||
4225 | if (dwarf2_read_index (objfile)) | |
4226 | return 1; | |
4227 | ||
9291a0cd TT |
4228 | return 0; |
4229 | } | |
4230 | ||
4231 | \f | |
4232 | ||
dce234bc PP |
4233 | /* Build a partial symbol table. */ |
4234 | ||
4235 | void | |
f29dff0a | 4236 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 4237 | { |
c9bf0622 | 4238 | |
f29dff0a | 4239 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
4240 | { |
4241 | init_psymbol_list (objfile, 1024); | |
4242 | } | |
4243 | ||
492d29ea | 4244 | TRY |
c9bf0622 TT |
4245 | { |
4246 | /* This isn't really ideal: all the data we allocate on the | |
4247 | objfile's obstack is still uselessly kept around. However, | |
4248 | freeing it seems unsafe. */ | |
4249 | struct cleanup *cleanups = make_cleanup_discard_psymtabs (objfile); | |
4250 | ||
4251 | dwarf2_build_psymtabs_hard (objfile); | |
4252 | discard_cleanups (cleanups); | |
4253 | } | |
492d29ea PA |
4254 | CATCH (except, RETURN_MASK_ERROR) |
4255 | { | |
4256 | exception_print (gdb_stderr, except); | |
4257 | } | |
4258 | END_CATCH | |
c906108c | 4259 | } |
c906108c | 4260 | |
1ce1cefd DE |
4261 | /* Return the total length of the CU described by HEADER. */ |
4262 | ||
4263 | static unsigned int | |
4264 | get_cu_length (const struct comp_unit_head *header) | |
4265 | { | |
4266 | return header->initial_length_size + header->length; | |
4267 | } | |
4268 | ||
45452591 DE |
4269 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
4270 | ||
4271 | static inline int | |
b64f50a1 | 4272 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 4273 | { |
b64f50a1 | 4274 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 4275 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 4276 | |
b64f50a1 | 4277 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
4278 | } |
4279 | ||
3b80fe9b DE |
4280 | /* Find the base address of the compilation unit for range lists and |
4281 | location lists. It will normally be specified by DW_AT_low_pc. | |
4282 | In DWARF-3 draft 4, the base address could be overridden by | |
4283 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
4284 | compilation units with discontinuous ranges. */ | |
4285 | ||
4286 | static void | |
4287 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
4288 | { | |
4289 | struct attribute *attr; | |
4290 | ||
4291 | cu->base_known = 0; | |
4292 | cu->base_address = 0; | |
4293 | ||
4294 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
4295 | if (attr) | |
4296 | { | |
31aa7e4e | 4297 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4298 | cu->base_known = 1; |
4299 | } | |
4300 | else | |
4301 | { | |
4302 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4303 | if (attr) | |
4304 | { | |
31aa7e4e | 4305 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4306 | cu->base_known = 1; |
4307 | } | |
4308 | } | |
4309 | } | |
4310 | ||
93311388 DE |
4311 | /* Read in the comp unit header information from the debug_info at info_ptr. |
4312 | NOTE: This leaves members offset, first_die_offset to be filled in | |
4313 | by the caller. */ | |
107d2387 | 4314 | |
d521ce57 | 4315 | static const gdb_byte * |
107d2387 | 4316 | read_comp_unit_head (struct comp_unit_head *cu_header, |
d521ce57 | 4317 | const gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
4318 | { |
4319 | int signed_addr; | |
891d2f0b | 4320 | unsigned int bytes_read; |
c764a876 DE |
4321 | |
4322 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
4323 | cu_header->initial_length_size = bytes_read; | |
4324 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 4325 | info_ptr += bytes_read; |
107d2387 AC |
4326 | cu_header->version = read_2_bytes (abfd, info_ptr); |
4327 | info_ptr += 2; | |
b64f50a1 JK |
4328 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
4329 | &bytes_read); | |
613e1657 | 4330 | info_ptr += bytes_read; |
107d2387 AC |
4331 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
4332 | info_ptr += 1; | |
4333 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
4334 | if (signed_addr < 0) | |
8e65ff28 | 4335 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4336 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 4337 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 4338 | |
107d2387 AC |
4339 | return info_ptr; |
4340 | } | |
4341 | ||
36586728 TT |
4342 | /* Helper function that returns the proper abbrev section for |
4343 | THIS_CU. */ | |
4344 | ||
4345 | static struct dwarf2_section_info * | |
4346 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
4347 | { | |
4348 | struct dwarf2_section_info *abbrev; | |
4349 | ||
4350 | if (this_cu->is_dwz) | |
4351 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
4352 | else | |
4353 | abbrev = &dwarf2_per_objfile->abbrev; | |
4354 | ||
4355 | return abbrev; | |
4356 | } | |
4357 | ||
9ff913ba DE |
4358 | /* Subroutine of read_and_check_comp_unit_head and |
4359 | read_and_check_type_unit_head to simplify them. | |
4360 | Perform various error checking on the header. */ | |
4361 | ||
4362 | static void | |
4363 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
4364 | struct dwarf2_section_info *section, |
4365 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 4366 | { |
a32a8923 DE |
4367 | bfd *abfd = get_section_bfd_owner (section); |
4368 | const char *filename = get_section_file_name (section); | |
9ff913ba DE |
4369 | |
4370 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
4371 | error (_("Dwarf Error: wrong version in compilation unit header " | |
4372 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
4373 | filename); | |
4374 | ||
b64f50a1 | 4375 | if (header->abbrev_offset.sect_off |
36586728 | 4376 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
4377 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
4378 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 4379 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
4380 | filename); |
4381 | ||
4382 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
4383 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4384 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4385 | > section->size) |
4386 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4387 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4388 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4389 | filename); |
4390 | } | |
4391 | ||
4392 | /* Read in a CU/TU header and perform some basic error checking. | |
4393 | The contents of the header are stored in HEADER. | |
4394 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4395 | |
d521ce57 | 4396 | static const gdb_byte * |
9ff913ba DE |
4397 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4398 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4399 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4400 | const gdb_byte *info_ptr, |
9ff913ba | 4401 | int is_debug_types_section) |
72bf9492 | 4402 | { |
d521ce57 | 4403 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4404 | bfd *abfd = get_section_bfd_owner (section); |
72bf9492 | 4405 | |
b64f50a1 | 4406 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4407 | |
72bf9492 DJ |
4408 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
4409 | ||
460c1c54 CC |
4410 | /* If we're reading a type unit, skip over the signature and |
4411 | type_offset fields. */ | |
b0df02fd | 4412 | if (is_debug_types_section) |
460c1c54 CC |
4413 | info_ptr += 8 /*signature*/ + header->offset_size; |
4414 | ||
b64f50a1 | 4415 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 4416 | |
4bdcc0c1 | 4417 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
4418 | |
4419 | return info_ptr; | |
4420 | } | |
4421 | ||
348e048f DE |
4422 | /* Read in the types comp unit header information from .debug_types entry at |
4423 | types_ptr. The result is a pointer to one past the end of the header. */ | |
4424 | ||
d521ce57 | 4425 | static const gdb_byte * |
9ff913ba DE |
4426 | read_and_check_type_unit_head (struct comp_unit_head *header, |
4427 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4428 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4429 | const gdb_byte *info_ptr, |
dee91e82 DE |
4430 | ULONGEST *signature, |
4431 | cu_offset *type_offset_in_tu) | |
348e048f | 4432 | { |
d521ce57 | 4433 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4434 | bfd *abfd = get_section_bfd_owner (section); |
348e048f | 4435 | |
b64f50a1 | 4436 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 4437 | |
9ff913ba | 4438 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 4439 | |
9ff913ba DE |
4440 | /* If we're reading a type unit, skip over the signature and |
4441 | type_offset fields. */ | |
4442 | if (signature != NULL) | |
4443 | *signature = read_8_bytes (abfd, info_ptr); | |
4444 | info_ptr += 8; | |
dee91e82 DE |
4445 | if (type_offset_in_tu != NULL) |
4446 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
4447 | header->offset_size); | |
9ff913ba DE |
4448 | info_ptr += header->offset_size; |
4449 | ||
b64f50a1 | 4450 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4451 | |
4bdcc0c1 | 4452 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4453 | |
4454 | return info_ptr; | |
348e048f DE |
4455 | } |
4456 | ||
f4dc4d17 DE |
4457 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4458 | ||
4459 | static sect_offset | |
4460 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4461 | sect_offset offset) | |
4462 | { | |
a32a8923 | 4463 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 4464 | const gdb_byte *info_ptr; |
f4dc4d17 DE |
4465 | unsigned int length, initial_length_size, offset_size; |
4466 | sect_offset abbrev_offset; | |
4467 | ||
4468 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4469 | info_ptr = section->buffer + offset.sect_off; | |
4470 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
4471 | offset_size = initial_length_size == 4 ? 4 : 8; | |
4472 | info_ptr += initial_length_size + 2 /*version*/; | |
4473 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
4474 | return abbrev_offset; | |
4475 | } | |
4476 | ||
aaa75496 JB |
4477 | /* Allocate a new partial symtab for file named NAME and mark this new |
4478 | partial symtab as being an include of PST. */ | |
4479 | ||
4480 | static void | |
d521ce57 | 4481 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
4482 | struct objfile *objfile) |
4483 | { | |
4484 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4485 | ||
fbd9ab74 JK |
4486 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4487 | { | |
4488 | /* It shares objfile->objfile_obstack. */ | |
4489 | subpst->dirname = pst->dirname; | |
4490 | } | |
4491 | ||
aaa75496 JB |
4492 | subpst->textlow = 0; |
4493 | subpst->texthigh = 0; | |
4494 | ||
4495 | subpst->dependencies = (struct partial_symtab **) | |
4496 | obstack_alloc (&objfile->objfile_obstack, | |
4497 | sizeof (struct partial_symtab *)); | |
4498 | subpst->dependencies[0] = pst; | |
4499 | subpst->number_of_dependencies = 1; | |
4500 | ||
4501 | subpst->globals_offset = 0; | |
4502 | subpst->n_global_syms = 0; | |
4503 | subpst->statics_offset = 0; | |
4504 | subpst->n_static_syms = 0; | |
43f3e411 | 4505 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
4506 | subpst->read_symtab = pst->read_symtab; |
4507 | subpst->readin = 0; | |
4508 | ||
4509 | /* No private part is necessary for include psymtabs. This property | |
4510 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4511 | the regular ones. */ |
58a9656e | 4512 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4513 | } |
4514 | ||
4515 | /* Read the Line Number Program data and extract the list of files | |
4516 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4517 | partial symtab for each of these included files. */ |
aaa75496 JB |
4518 | |
4519 | static void | |
4520 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4521 | struct die_info *die, |
4522 | struct partial_symtab *pst) | |
aaa75496 | 4523 | { |
d85a05f0 DJ |
4524 | struct line_header *lh = NULL; |
4525 | struct attribute *attr; | |
aaa75496 | 4526 | |
d85a05f0 DJ |
4527 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4528 | if (attr) | |
3019eac3 | 4529 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4530 | if (lh == NULL) |
4531 | return; /* No linetable, so no includes. */ | |
4532 | ||
c6da4cef | 4533 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
527f3840 | 4534 | dwarf_decode_lines (lh, pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
4535 | |
4536 | free_line_header (lh); | |
4537 | } | |
4538 | ||
348e048f | 4539 | static hashval_t |
52dc124a | 4540 | hash_signatured_type (const void *item) |
348e048f | 4541 | { |
52dc124a | 4542 | const struct signatured_type *sig_type = item; |
9a619af0 | 4543 | |
348e048f | 4544 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4545 | return sig_type->signature; |
348e048f DE |
4546 | } |
4547 | ||
4548 | static int | |
52dc124a | 4549 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
4550 | { |
4551 | const struct signatured_type *lhs = item_lhs; | |
4552 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4553 | |
348e048f DE |
4554 | return lhs->signature == rhs->signature; |
4555 | } | |
4556 | ||
1fd400ff TT |
4557 | /* Allocate a hash table for signatured types. */ |
4558 | ||
4559 | static htab_t | |
673bfd45 | 4560 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4561 | { |
4562 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4563 | hash_signatured_type, |
4564 | eq_signatured_type, | |
1fd400ff TT |
4565 | NULL, |
4566 | &objfile->objfile_obstack, | |
4567 | hashtab_obstack_allocate, | |
4568 | dummy_obstack_deallocate); | |
4569 | } | |
4570 | ||
d467dd73 | 4571 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4572 | |
4573 | static int | |
d467dd73 | 4574 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4575 | { |
4576 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4577 | struct signatured_type ***datap = datum; |
1fd400ff | 4578 | |
b4dd5633 | 4579 | **datap = sigt; |
1fd400ff TT |
4580 | ++*datap; |
4581 | ||
4582 | return 1; | |
4583 | } | |
4584 | ||
c88ee1f0 DE |
4585 | /* Create the hash table of all entries in the .debug_types |
4586 | (or .debug_types.dwo) section(s). | |
4587 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4588 | otherwise it is NULL. | |
4589 | ||
4590 | The result is a pointer to the hash table or NULL if there are no types. | |
4591 | ||
4592 | Note: This function processes DWO files only, not DWP files. */ | |
348e048f | 4593 | |
3019eac3 DE |
4594 | static htab_t |
4595 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4596 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4597 | { |
3019eac3 | 4598 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4599 | htab_t types_htab = NULL; |
8b70b953 TT |
4600 | int ix; |
4601 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4602 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4603 | |
3019eac3 DE |
4604 | if (VEC_empty (dwarf2_section_info_def, types)) |
4605 | return NULL; | |
348e048f | 4606 | |
4bdcc0c1 DE |
4607 | abbrev_section = (dwo_file != NULL |
4608 | ? &dwo_file->sections.abbrev | |
4609 | : &dwarf2_per_objfile->abbrev); | |
4610 | ||
b4f54984 | 4611 | if (dwarf_read_debug) |
09406207 DE |
4612 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", |
4613 | dwo_file ? ".dwo" : "", | |
a32a8923 | 4614 | get_section_file_name (abbrev_section)); |
09406207 | 4615 | |
8b70b953 | 4616 | for (ix = 0; |
3019eac3 | 4617 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4618 | ++ix) |
4619 | { | |
3019eac3 | 4620 | bfd *abfd; |
d521ce57 | 4621 | const gdb_byte *info_ptr, *end_ptr; |
348e048f | 4622 | |
8b70b953 TT |
4623 | dwarf2_read_section (objfile, section); |
4624 | info_ptr = section->buffer; | |
348e048f | 4625 | |
8b70b953 TT |
4626 | if (info_ptr == NULL) |
4627 | continue; | |
348e048f | 4628 | |
3019eac3 | 4629 | /* We can't set abfd until now because the section may be empty or |
a32a8923 DE |
4630 | not present, in which case the bfd is unknown. */ |
4631 | abfd = get_section_bfd_owner (section); | |
3019eac3 | 4632 | |
dee91e82 DE |
4633 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4634 | because we don't need to read any dies: the signature is in the | |
4635 | header. */ | |
8b70b953 TT |
4636 | |
4637 | end_ptr = info_ptr + section->size; | |
4638 | while (info_ptr < end_ptr) | |
4639 | { | |
b64f50a1 | 4640 | sect_offset offset; |
3019eac3 | 4641 | cu_offset type_offset_in_tu; |
8b70b953 | 4642 | ULONGEST signature; |
52dc124a | 4643 | struct signatured_type *sig_type; |
3019eac3 | 4644 | struct dwo_unit *dwo_tu; |
8b70b953 | 4645 | void **slot; |
d521ce57 | 4646 | const gdb_byte *ptr = info_ptr; |
9ff913ba | 4647 | struct comp_unit_head header; |
dee91e82 | 4648 | unsigned int length; |
348e048f | 4649 | |
b64f50a1 | 4650 | offset.sect_off = ptr - section->buffer; |
348e048f | 4651 | |
8b70b953 | 4652 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4653 | table, but we don't need anything else just yet. */ |
348e048f | 4654 | |
4bdcc0c1 DE |
4655 | ptr = read_and_check_type_unit_head (&header, section, |
4656 | abbrev_section, ptr, | |
3019eac3 | 4657 | &signature, &type_offset_in_tu); |
6caca83c | 4658 | |
1ce1cefd | 4659 | length = get_cu_length (&header); |
dee91e82 | 4660 | |
6caca83c | 4661 | /* Skip dummy type units. */ |
dee91e82 DE |
4662 | if (ptr >= info_ptr + length |
4663 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4664 | { |
1ce1cefd | 4665 | info_ptr += length; |
6caca83c CC |
4666 | continue; |
4667 | } | |
8b70b953 | 4668 | |
0349ea22 DE |
4669 | if (types_htab == NULL) |
4670 | { | |
4671 | if (dwo_file) | |
4672 | types_htab = allocate_dwo_unit_table (objfile); | |
4673 | else | |
4674 | types_htab = allocate_signatured_type_table (objfile); | |
4675 | } | |
4676 | ||
3019eac3 DE |
4677 | if (dwo_file) |
4678 | { | |
4679 | sig_type = NULL; | |
4680 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4681 | struct dwo_unit); | |
4682 | dwo_tu->dwo_file = dwo_file; | |
4683 | dwo_tu->signature = signature; | |
4684 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
8a0459fd | 4685 | dwo_tu->section = section; |
3019eac3 DE |
4686 | dwo_tu->offset = offset; |
4687 | dwo_tu->length = length; | |
4688 | } | |
4689 | else | |
4690 | { | |
4691 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4692 | The real type_offset is in the DWO file. */ | |
4693 | dwo_tu = NULL; | |
4694 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4695 | struct signatured_type); | |
4696 | sig_type->signature = signature; | |
4697 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4698 | sig_type->per_cu.objfile = objfile; | |
4699 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 4700 | sig_type->per_cu.section = section; |
3019eac3 DE |
4701 | sig_type->per_cu.offset = offset; |
4702 | sig_type->per_cu.length = length; | |
4703 | } | |
8b70b953 | 4704 | |
3019eac3 DE |
4705 | slot = htab_find_slot (types_htab, |
4706 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4707 | INSERT); | |
8b70b953 TT |
4708 | gdb_assert (slot != NULL); |
4709 | if (*slot != NULL) | |
4710 | { | |
3019eac3 DE |
4711 | sect_offset dup_offset; |
4712 | ||
4713 | if (dwo_file) | |
4714 | { | |
4715 | const struct dwo_unit *dup_tu = *slot; | |
4716 | ||
4717 | dup_offset = dup_tu->offset; | |
4718 | } | |
4719 | else | |
4720 | { | |
4721 | const struct signatured_type *dup_tu = *slot; | |
4722 | ||
4723 | dup_offset = dup_tu->per_cu.offset; | |
4724 | } | |
b3c8eb43 | 4725 | |
8b70b953 | 4726 | complaint (&symfile_complaints, |
c88ee1f0 | 4727 | _("debug type entry at offset 0x%x is duplicate to" |
4031ecc5 | 4728 | " the entry at offset 0x%x, signature %s"), |
3019eac3 | 4729 | offset.sect_off, dup_offset.sect_off, |
4031ecc5 | 4730 | hex_string (signature)); |
8b70b953 | 4731 | } |
3019eac3 | 4732 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4733 | |
b4f54984 | 4734 | if (dwarf_read_debug > 1) |
4031ecc5 | 4735 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", |
b64f50a1 | 4736 | offset.sect_off, |
4031ecc5 | 4737 | hex_string (signature)); |
348e048f | 4738 | |
dee91e82 | 4739 | info_ptr += length; |
8b70b953 | 4740 | } |
348e048f DE |
4741 | } |
4742 | ||
3019eac3 DE |
4743 | return types_htab; |
4744 | } | |
4745 | ||
4746 | /* Create the hash table of all entries in the .debug_types section, | |
4747 | and initialize all_type_units. | |
4748 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4749 | otherwise non-zero. */ | |
4750 | ||
4751 | static int | |
4752 | create_all_type_units (struct objfile *objfile) | |
4753 | { | |
4754 | htab_t types_htab; | |
b4dd5633 | 4755 | struct signatured_type **iter; |
3019eac3 DE |
4756 | |
4757 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4758 | if (types_htab == NULL) | |
4759 | { | |
4760 | dwarf2_per_objfile->signatured_types = NULL; | |
4761 | return 0; | |
4762 | } | |
4763 | ||
348e048f DE |
4764 | dwarf2_per_objfile->signatured_types = types_htab; |
4765 | ||
6aa5f3a6 DE |
4766 | dwarf2_per_objfile->n_type_units |
4767 | = dwarf2_per_objfile->n_allocated_type_units | |
4768 | = htab_elements (types_htab); | |
d467dd73 | 4769 | dwarf2_per_objfile->all_type_units |
a2ce51a0 DE |
4770 | = xmalloc (dwarf2_per_objfile->n_type_units |
4771 | * sizeof (struct signatured_type *)); | |
d467dd73 DE |
4772 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4773 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4774 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4775 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4776 | |
348e048f DE |
4777 | return 1; |
4778 | } | |
4779 | ||
6aa5f3a6 DE |
4780 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
4781 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
4782 | Otherwise we find one. */ | |
4783 | ||
4784 | static struct signatured_type * | |
4785 | add_type_unit (ULONGEST sig, void **slot) | |
4786 | { | |
4787 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4788 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
4789 | struct signatured_type *sig_type; | |
4790 | ||
4791 | gdb_assert (n_type_units <= dwarf2_per_objfile->n_allocated_type_units); | |
4792 | ++n_type_units; | |
4793 | if (n_type_units > dwarf2_per_objfile->n_allocated_type_units) | |
4794 | { | |
4795 | if (dwarf2_per_objfile->n_allocated_type_units == 0) | |
4796 | dwarf2_per_objfile->n_allocated_type_units = 1; | |
4797 | dwarf2_per_objfile->n_allocated_type_units *= 2; | |
4798 | dwarf2_per_objfile->all_type_units | |
4799 | = xrealloc (dwarf2_per_objfile->all_type_units, | |
4800 | dwarf2_per_objfile->n_allocated_type_units | |
4801 | * sizeof (struct signatured_type *)); | |
4802 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
4803 | } | |
4804 | dwarf2_per_objfile->n_type_units = n_type_units; | |
4805 | ||
4806 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4807 | struct signatured_type); | |
4808 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
4809 | sig_type->signature = sig; | |
4810 | sig_type->per_cu.is_debug_types = 1; | |
4811 | if (dwarf2_per_objfile->using_index) | |
4812 | { | |
4813 | sig_type->per_cu.v.quick = | |
4814 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4815 | struct dwarf2_per_cu_quick_data); | |
4816 | } | |
4817 | ||
4818 | if (slot == NULL) | |
4819 | { | |
4820 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4821 | sig_type, INSERT); | |
4822 | } | |
4823 | gdb_assert (*slot == NULL); | |
4824 | *slot = sig_type; | |
4825 | /* The rest of sig_type must be filled in by the caller. */ | |
4826 | return sig_type; | |
4827 | } | |
4828 | ||
a2ce51a0 DE |
4829 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
4830 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
4831 | ||
4832 | static void | |
4833 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
4834 | struct signatured_type *sig_entry, | |
4835 | struct dwo_unit *dwo_entry) | |
4836 | { | |
7ee85ab1 | 4837 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
4838 | gdb_assert (! sig_entry->per_cu.queued); |
4839 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
4840 | if (dwarf2_per_objfile->using_index) |
4841 | { | |
4842 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 4843 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
4844 | } |
4845 | else | |
4846 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 DE |
4847 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
4848 | gdb_assert (sig_entry->type_offset_in_section.sect_off == 0); | |
4849 | gdb_assert (sig_entry->type_unit_group == NULL); | |
7ee85ab1 DE |
4850 | gdb_assert (sig_entry->dwo_unit == NULL); |
4851 | ||
4852 | sig_entry->per_cu.section = dwo_entry->section; | |
4853 | sig_entry->per_cu.offset = dwo_entry->offset; | |
4854 | sig_entry->per_cu.length = dwo_entry->length; | |
4855 | sig_entry->per_cu.reading_dwo_directly = 1; | |
4856 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
4857 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
4858 | sig_entry->dwo_unit = dwo_entry; | |
4859 | } | |
4860 | ||
4861 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
4862 | If we haven't read the TU yet, create the signatured_type data structure |
4863 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
4864 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
4865 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
4866 | containing that CU. Otherwise we could end up reading several other DWO | |
4867 | files (due to comdat folding) to process the transitive closure of all the | |
4868 | mentioned TUs, and that can be slow. The current DWO file will have every | |
4869 | type signature that it needs. | |
a2ce51a0 DE |
4870 | We only do this for .gdb_index because in the psymtab case we already have |
4871 | to read all the DWOs to build the type unit groups. */ | |
4872 | ||
4873 | static struct signatured_type * | |
4874 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4875 | { | |
4876 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4877 | struct dwo_file *dwo_file; | |
4878 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
4879 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 4880 | void **slot; |
a2ce51a0 DE |
4881 | |
4882 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4883 | ||
6aa5f3a6 DE |
4884 | /* If TU skeletons have been removed then we may not have read in any |
4885 | TUs yet. */ | |
4886 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4887 | { | |
4888 | dwarf2_per_objfile->signatured_types | |
4889 | = allocate_signatured_type_table (objfile); | |
4890 | } | |
a2ce51a0 DE |
4891 | |
4892 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
4893 | Use the global signatured_types array to do our own comdat-folding |
4894 | of types. If this is the first time we're reading this TU, and | |
4895 | the TU has an entry in .gdb_index, replace the recorded data from | |
4896 | .gdb_index with this TU. */ | |
a2ce51a0 | 4897 | |
a2ce51a0 | 4898 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
4899 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
4900 | &find_sig_entry, INSERT); | |
4901 | sig_entry = *slot; | |
7ee85ab1 DE |
4902 | |
4903 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
4904 | read. Don't reassign the global entry to point to this DWO if that's |
4905 | the case. Also note that if the TU is already being read, it may not | |
4906 | have come from a DWO, the program may be a mix of Fission-compiled | |
4907 | code and non-Fission-compiled code. */ | |
4908 | ||
4909 | /* Have we already tried to read this TU? | |
4910 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
4911 | needn't exist in the global table yet). */ | |
4912 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
4913 | return sig_entry; |
4914 | ||
6aa5f3a6 DE |
4915 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
4916 | dwo_unit of the TU itself. */ | |
4917 | dwo_file = cu->dwo_unit->dwo_file; | |
4918 | ||
a2ce51a0 DE |
4919 | /* Ok, this is the first time we're reading this TU. */ |
4920 | if (dwo_file->tus == NULL) | |
4921 | return NULL; | |
4922 | find_dwo_entry.signature = sig; | |
4923 | dwo_entry = htab_find (dwo_file->tus, &find_dwo_entry); | |
4924 | if (dwo_entry == NULL) | |
4925 | return NULL; | |
4926 | ||
6aa5f3a6 DE |
4927 | /* If the global table doesn't have an entry for this TU, add one. */ |
4928 | if (sig_entry == NULL) | |
4929 | sig_entry = add_type_unit (sig, slot); | |
4930 | ||
a2ce51a0 | 4931 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
89e63ee4 | 4932 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
4933 | return sig_entry; |
4934 | } | |
4935 | ||
a2ce51a0 DE |
4936 | /* Subroutine of lookup_signatured_type. |
4937 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
4938 | then try the DWP file. If the TU stub (skeleton) has been removed then |
4939 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
4940 | |
4941 | static struct signatured_type * | |
4942 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4943 | { | |
4944 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4945 | struct dwp_file *dwp_file = get_dwp_file (); | |
4946 | struct dwo_unit *dwo_entry; | |
4947 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 4948 | void **slot; |
a2ce51a0 DE |
4949 | |
4950 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4951 | gdb_assert (dwp_file != NULL); | |
4952 | ||
6aa5f3a6 DE |
4953 | /* If TU skeletons have been removed then we may not have read in any |
4954 | TUs yet. */ | |
4955 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 4956 | { |
6aa5f3a6 DE |
4957 | dwarf2_per_objfile->signatured_types |
4958 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
4959 | } |
4960 | ||
6aa5f3a6 DE |
4961 | find_sig_entry.signature = sig; |
4962 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4963 | &find_sig_entry, INSERT); | |
4964 | sig_entry = *slot; | |
4965 | ||
4966 | /* Have we already tried to read this TU? | |
4967 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
4968 | needn't exist in the global table yet). */ | |
4969 | if (sig_entry != NULL) | |
4970 | return sig_entry; | |
4971 | ||
a2ce51a0 DE |
4972 | if (dwp_file->tus == NULL) |
4973 | return NULL; | |
57d63ce2 DE |
4974 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
4975 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
4976 | if (dwo_entry == NULL) |
4977 | return NULL; | |
4978 | ||
6aa5f3a6 | 4979 | sig_entry = add_type_unit (sig, slot); |
a2ce51a0 DE |
4980 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
4981 | ||
a2ce51a0 DE |
4982 | return sig_entry; |
4983 | } | |
4984 | ||
380bca97 | 4985 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
4986 | Returns NULL if signature SIG is not present in the table. |
4987 | It is up to the caller to complain about this. */ | |
348e048f DE |
4988 | |
4989 | static struct signatured_type * | |
a2ce51a0 | 4990 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 4991 | { |
a2ce51a0 DE |
4992 | if (cu->dwo_unit |
4993 | && dwarf2_per_objfile->using_index) | |
4994 | { | |
4995 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
4996 | These cases require special processing. */ | |
4997 | if (get_dwp_file () == NULL) | |
4998 | return lookup_dwo_signatured_type (cu, sig); | |
4999 | else | |
5000 | return lookup_dwp_signatured_type (cu, sig); | |
5001 | } | |
5002 | else | |
5003 | { | |
5004 | struct signatured_type find_entry, *entry; | |
348e048f | 5005 | |
a2ce51a0 DE |
5006 | if (dwarf2_per_objfile->signatured_types == NULL) |
5007 | return NULL; | |
5008 | find_entry.signature = sig; | |
5009 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
5010 | return entry; | |
5011 | } | |
348e048f | 5012 | } |
42e7ad6c DE |
5013 | \f |
5014 | /* Low level DIE reading support. */ | |
348e048f | 5015 | |
d85a05f0 DJ |
5016 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
5017 | ||
5018 | static void | |
5019 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 5020 | struct dwarf2_cu *cu, |
3019eac3 DE |
5021 | struct dwarf2_section_info *section, |
5022 | struct dwo_file *dwo_file) | |
d85a05f0 | 5023 | { |
fceca515 | 5024 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 5025 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 5026 | reader->cu = cu; |
3019eac3 | 5027 | reader->dwo_file = dwo_file; |
dee91e82 DE |
5028 | reader->die_section = section; |
5029 | reader->buffer = section->buffer; | |
f664829e | 5030 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 5031 | reader->comp_dir = NULL; |
d85a05f0 DJ |
5032 | } |
5033 | ||
b0c7bfa9 DE |
5034 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
5035 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
5036 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
5037 | already. | |
5038 | ||
5039 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
5040 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
5041 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
5042 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
5043 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
5044 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
5045 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
5046 | are filled in with the info of the DIE from the DWO file. | |
5047 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
5048 | provided an abbrev table to use. | |
5049 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
5050 | ||
5051 | static int | |
5052 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
5053 | struct dwo_unit *dwo_unit, | |
5054 | int abbrev_table_provided, | |
5055 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 5056 | const char *stub_comp_dir, |
b0c7bfa9 | 5057 | struct die_reader_specs *result_reader, |
d521ce57 | 5058 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
5059 | struct die_info **result_comp_unit_die, |
5060 | int *result_has_children) | |
5061 | { | |
5062 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5063 | struct dwarf2_cu *cu = this_cu->cu; | |
5064 | struct dwarf2_section_info *section; | |
5065 | bfd *abfd; | |
d521ce57 | 5066 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
5067 | ULONGEST signature; /* Or dwo_id. */ |
5068 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
5069 | int i,num_extra_attrs; | |
5070 | struct dwarf2_section_info *dwo_abbrev_section; | |
5071 | struct attribute *attr; | |
5072 | struct die_info *comp_unit_die; | |
5073 | ||
b0aeadb3 DE |
5074 | /* At most one of these may be provided. */ |
5075 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 5076 | |
b0c7bfa9 DE |
5077 | /* These attributes aren't processed until later: |
5078 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
5079 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
5080 | referenced later. However, these attributes are found in the stub | |
5081 | which we won't have later. In order to not impose this complication | |
5082 | on the rest of the code, we read them here and copy them to the | |
5083 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
5084 | |
5085 | stmt_list = NULL; | |
5086 | low_pc = NULL; | |
5087 | high_pc = NULL; | |
5088 | ranges = NULL; | |
5089 | comp_dir = NULL; | |
5090 | ||
5091 | if (stub_comp_unit_die != NULL) | |
5092 | { | |
5093 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
5094 | DWO file. */ | |
5095 | if (! this_cu->is_debug_types) | |
5096 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
5097 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
5098 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
5099 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
5100 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
5101 | ||
5102 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
5103 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
5104 | cu->addr_base = 0; | |
5105 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
5106 | if (attr) | |
5107 | cu->addr_base = DW_UNSND (attr); | |
5108 | ||
5109 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
5110 | We need the value before we can process DW_AT_ranges. */ | |
5111 | cu->ranges_base = 0; | |
5112 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
5113 | if (attr) | |
5114 | cu->ranges_base = DW_UNSND (attr); | |
5115 | } | |
a2ce51a0 DE |
5116 | else if (stub_comp_dir != NULL) |
5117 | { | |
5118 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
5119 | comp_dir = (struct attribute *) | |
5120 | obstack_alloc (&cu->comp_unit_obstack, sizeof (*comp_dir)); | |
5121 | comp_dir->name = DW_AT_comp_dir; | |
5122 | comp_dir->form = DW_FORM_string; | |
5123 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
5124 | DW_STRING (comp_dir) = stub_comp_dir; | |
5125 | } | |
b0c7bfa9 DE |
5126 | |
5127 | /* Set up for reading the DWO CU/TU. */ | |
5128 | cu->dwo_unit = dwo_unit; | |
5129 | section = dwo_unit->section; | |
5130 | dwarf2_read_section (objfile, section); | |
a32a8923 | 5131 | abfd = get_section_bfd_owner (section); |
b0c7bfa9 DE |
5132 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
5133 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; | |
5134 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
5135 | ||
5136 | if (this_cu->is_debug_types) | |
5137 | { | |
5138 | ULONGEST header_signature; | |
5139 | cu_offset type_offset_in_tu; | |
5140 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; | |
5141 | ||
5142 | info_ptr = read_and_check_type_unit_head (&cu->header, section, | |
5143 | dwo_abbrev_section, | |
5144 | info_ptr, | |
5145 | &header_signature, | |
5146 | &type_offset_in_tu); | |
a2ce51a0 DE |
5147 | /* This is not an assert because it can be caused by bad debug info. */ |
5148 | if (sig_type->signature != header_signature) | |
5149 | { | |
5150 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
5151 | " TU at offset 0x%x [in module %s]"), | |
5152 | hex_string (sig_type->signature), | |
5153 | hex_string (header_signature), | |
5154 | dwo_unit->offset.sect_off, | |
5155 | bfd_get_filename (abfd)); | |
5156 | } | |
b0c7bfa9 DE |
5157 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
5158 | /* For DWOs coming from DWP files, we don't know the CU length | |
5159 | nor the type's offset in the TU until now. */ | |
5160 | dwo_unit->length = get_cu_length (&cu->header); | |
5161 | dwo_unit->type_offset_in_tu = type_offset_in_tu; | |
5162 | ||
5163 | /* Establish the type offset that can be used to lookup the type. | |
5164 | For DWO files, we don't know it until now. */ | |
5165 | sig_type->type_offset_in_section.sect_off = | |
5166 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
5167 | } | |
5168 | else | |
5169 | { | |
5170 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
5171 | dwo_abbrev_section, | |
5172 | info_ptr, 0); | |
5173 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
5174 | /* For DWOs coming from DWP files, we don't know the CU length | |
5175 | until now. */ | |
5176 | dwo_unit->length = get_cu_length (&cu->header); | |
5177 | } | |
5178 | ||
02142a6c DE |
5179 | /* Replace the CU's original abbrev table with the DWO's. |
5180 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
5181 | if (abbrev_table_provided) |
5182 | { | |
5183 | /* Don't free the provided abbrev table, the caller of | |
5184 | init_cutu_and_read_dies owns it. */ | |
5185 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5186 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
5187 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5188 | } | |
5189 | else | |
5190 | { | |
5191 | dwarf2_free_abbrev_table (cu); | |
5192 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5193 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
5194 | } |
5195 | ||
5196 | /* Read in the die, but leave space to copy over the attributes | |
5197 | from the stub. This has the benefit of simplifying the rest of | |
5198 | the code - all the work to maintain the illusion of a single | |
5199 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
5200 | num_extra_attrs = ((stmt_list != NULL) | |
5201 | + (low_pc != NULL) | |
5202 | + (high_pc != NULL) | |
5203 | + (ranges != NULL) | |
5204 | + (comp_dir != NULL)); | |
5205 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
5206 | result_has_children, num_extra_attrs); | |
5207 | ||
5208 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
5209 | comp_unit_die = *result_comp_unit_die; | |
5210 | i = comp_unit_die->num_attrs; | |
5211 | if (stmt_list != NULL) | |
5212 | comp_unit_die->attrs[i++] = *stmt_list; | |
5213 | if (low_pc != NULL) | |
5214 | comp_unit_die->attrs[i++] = *low_pc; | |
5215 | if (high_pc != NULL) | |
5216 | comp_unit_die->attrs[i++] = *high_pc; | |
5217 | if (ranges != NULL) | |
5218 | comp_unit_die->attrs[i++] = *ranges; | |
5219 | if (comp_dir != NULL) | |
5220 | comp_unit_die->attrs[i++] = *comp_dir; | |
5221 | comp_unit_die->num_attrs += num_extra_attrs; | |
5222 | ||
b4f54984 | 5223 | if (dwarf_die_debug) |
bf6af496 DE |
5224 | { |
5225 | fprintf_unfiltered (gdb_stdlog, | |
5226 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 5227 | get_section_name (section), |
bf6af496 DE |
5228 | (unsigned) (begin_info_ptr - section->buffer), |
5229 | bfd_get_filename (abfd)); | |
b4f54984 | 5230 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
5231 | } |
5232 | ||
a2ce51a0 DE |
5233 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
5234 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
5235 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
5236 | to get it via circuitous means. Blech. */ | |
5237 | if (comp_dir != NULL) | |
5238 | result_reader->comp_dir = DW_STRING (comp_dir); | |
5239 | ||
b0c7bfa9 DE |
5240 | /* Skip dummy compilation units. */ |
5241 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
5242 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
5243 | return 0; | |
5244 | ||
5245 | *result_info_ptr = info_ptr; | |
5246 | return 1; | |
5247 | } | |
5248 | ||
5249 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
5250 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 5251 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
5252 | |
5253 | static struct dwo_unit * | |
5254 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
5255 | struct die_info *comp_unit_die) | |
5256 | { | |
5257 | struct dwarf2_cu *cu = this_cu->cu; | |
5258 | struct attribute *attr; | |
5259 | ULONGEST signature; | |
5260 | struct dwo_unit *dwo_unit; | |
5261 | const char *comp_dir, *dwo_name; | |
5262 | ||
a2ce51a0 DE |
5263 | gdb_assert (cu != NULL); |
5264 | ||
b0c7bfa9 DE |
5265 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
5266 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
5267 | gdb_assert (attr != NULL); | |
5268 | dwo_name = DW_STRING (attr); | |
5269 | comp_dir = NULL; | |
5270 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5271 | if (attr) | |
5272 | comp_dir = DW_STRING (attr); | |
5273 | ||
5274 | if (this_cu->is_debug_types) | |
5275 | { | |
5276 | struct signatured_type *sig_type; | |
5277 | ||
5278 | /* Since this_cu is the first member of struct signatured_type, | |
5279 | we can go from a pointer to one to a pointer to the other. */ | |
5280 | sig_type = (struct signatured_type *) this_cu; | |
5281 | signature = sig_type->signature; | |
5282 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
5283 | } | |
5284 | else | |
5285 | { | |
5286 | struct attribute *attr; | |
5287 | ||
5288 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
5289 | if (! attr) | |
5290 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
5291 | " [in module %s]"), | |
4262abfb | 5292 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
5293 | signature = DW_UNSND (attr); |
5294 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
5295 | signature); | |
5296 | } | |
5297 | ||
b0c7bfa9 DE |
5298 | return dwo_unit; |
5299 | } | |
5300 | ||
a2ce51a0 | 5301 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 DE |
5302 | See it for a description of the parameters. |
5303 | Read a TU directly from a DWO file, bypassing the stub. | |
5304 | ||
5305 | Note: This function could be a little bit simpler if we shared cleanups | |
5306 | with our caller, init_cutu_and_read_dies. That's generally a fragile thing | |
5307 | to do, so we keep this function self-contained. Or we could move this | |
5308 | into our caller, but it's complex enough already. */ | |
a2ce51a0 DE |
5309 | |
5310 | static void | |
6aa5f3a6 DE |
5311 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
5312 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
5313 | die_reader_func_ftype *die_reader_func, |
5314 | void *data) | |
5315 | { | |
5316 | struct dwarf2_cu *cu; | |
5317 | struct signatured_type *sig_type; | |
6aa5f3a6 | 5318 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
a2ce51a0 DE |
5319 | struct die_reader_specs reader; |
5320 | const gdb_byte *info_ptr; | |
5321 | struct die_info *comp_unit_die; | |
5322 | int has_children; | |
5323 | ||
5324 | /* Verify we can do the following downcast, and that we have the | |
5325 | data we need. */ | |
5326 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
5327 | sig_type = (struct signatured_type *) this_cu; | |
5328 | gdb_assert (sig_type->dwo_unit != NULL); | |
5329 | ||
5330 | cleanups = make_cleanup (null_cleanup, NULL); | |
5331 | ||
6aa5f3a6 DE |
5332 | if (use_existing_cu && this_cu->cu != NULL) |
5333 | { | |
5334 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
5335 | cu = this_cu->cu; | |
5336 | /* There's no need to do the rereading_dwo_cu handling that | |
5337 | init_cutu_and_read_dies does since we don't read the stub. */ | |
5338 | } | |
5339 | else | |
5340 | { | |
5341 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5342 | gdb_assert (this_cu->cu == NULL); | |
5343 | cu = xmalloc (sizeof (*cu)); | |
5344 | init_one_comp_unit (cu, this_cu); | |
5345 | /* If an error occurs while loading, release our storage. */ | |
5346 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
5347 | } | |
5348 | ||
5349 | /* A future optimization, if needed, would be to use an existing | |
5350 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
5351 | could share abbrev tables. */ | |
a2ce51a0 DE |
5352 | |
5353 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
5354 | 0 /* abbrev_table_provided */, | |
5355 | NULL /* stub_comp_unit_die */, | |
5356 | sig_type->dwo_unit->dwo_file->comp_dir, | |
5357 | &reader, &info_ptr, | |
5358 | &comp_unit_die, &has_children) == 0) | |
5359 | { | |
5360 | /* Dummy die. */ | |
5361 | do_cleanups (cleanups); | |
5362 | return; | |
5363 | } | |
5364 | ||
5365 | /* All the "real" work is done here. */ | |
5366 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5367 | ||
6aa5f3a6 | 5368 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
5369 | but the alternative is making the latter more complex. |
5370 | This function is only for the special case of using DWO files directly: | |
5371 | no point in overly complicating the general case just to handle this. */ | |
6aa5f3a6 | 5372 | if (free_cu_cleanup != NULL) |
a2ce51a0 | 5373 | { |
6aa5f3a6 DE |
5374 | if (keep) |
5375 | { | |
5376 | /* We've successfully allocated this compilation unit. Let our | |
5377 | caller clean it up when finished with it. */ | |
5378 | discard_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5379 | |
6aa5f3a6 DE |
5380 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5381 | So we have to manually free the abbrev table. */ | |
5382 | dwarf2_free_abbrev_table (cu); | |
a2ce51a0 | 5383 | |
6aa5f3a6 DE |
5384 | /* Link this CU into read_in_chain. */ |
5385 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5386 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5387 | } | |
5388 | else | |
5389 | do_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5390 | } |
a2ce51a0 DE |
5391 | |
5392 | do_cleanups (cleanups); | |
5393 | } | |
5394 | ||
fd820528 | 5395 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 5396 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 5397 | |
f4dc4d17 DE |
5398 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
5399 | Otherwise the table specified in the comp unit header is read in and used. | |
5400 | This is an optimization for when we already have the abbrev table. | |
5401 | ||
dee91e82 DE |
5402 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
5403 | Otherwise, a new CU is allocated with xmalloc. | |
5404 | ||
5405 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
5406 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
5407 | ||
5408 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 5409 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 5410 | |
70221824 | 5411 | static void |
fd820528 | 5412 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 5413 | struct abbrev_table *abbrev_table, |
fd820528 DE |
5414 | int use_existing_cu, int keep, |
5415 | die_reader_func_ftype *die_reader_func, | |
5416 | void *data) | |
c906108c | 5417 | { |
dee91e82 | 5418 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 5419 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5420 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5421 | struct dwarf2_cu *cu; |
d521ce57 | 5422 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 5423 | struct die_reader_specs reader; |
d85a05f0 | 5424 | struct die_info *comp_unit_die; |
dee91e82 | 5425 | int has_children; |
d85a05f0 | 5426 | struct attribute *attr; |
365156ad | 5427 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 5428 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 5429 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
5430 | /* Non-zero if CU currently points to a DWO file and we need to |
5431 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 5432 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 5433 | int rereading_dwo_cu = 0; |
c906108c | 5434 | |
b4f54984 | 5435 | if (dwarf_die_debug) |
09406207 DE |
5436 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
5437 | this_cu->is_debug_types ? "type" : "comp", | |
5438 | this_cu->offset.sect_off); | |
5439 | ||
dee91e82 DE |
5440 | if (use_existing_cu) |
5441 | gdb_assert (keep); | |
23745b47 | 5442 | |
a2ce51a0 DE |
5443 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
5444 | file (instead of going through the stub), short-circuit all of this. */ | |
5445 | if (this_cu->reading_dwo_directly) | |
5446 | { | |
5447 | /* Narrow down the scope of possibilities to have to understand. */ | |
5448 | gdb_assert (this_cu->is_debug_types); | |
5449 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
5450 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
5451 | die_reader_func, data); | |
a2ce51a0 DE |
5452 | return; |
5453 | } | |
5454 | ||
dee91e82 DE |
5455 | cleanups = make_cleanup (null_cleanup, NULL); |
5456 | ||
5457 | /* This is cheap if the section is already read in. */ | |
5458 | dwarf2_read_section (objfile, section); | |
5459 | ||
5460 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
5461 | |
5462 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
5463 | |
5464 | if (use_existing_cu && this_cu->cu != NULL) | |
5465 | { | |
5466 | cu = this_cu->cu; | |
42e7ad6c DE |
5467 | /* If this CU is from a DWO file we need to start over, we need to |
5468 | refetch the attributes from the skeleton CU. | |
5469 | This could be optimized by retrieving those attributes from when we | |
5470 | were here the first time: the previous comp_unit_die was stored in | |
5471 | comp_unit_obstack. But there's no data yet that we need this | |
5472 | optimization. */ | |
5473 | if (cu->dwo_unit != NULL) | |
5474 | rereading_dwo_cu = 1; | |
dee91e82 DE |
5475 | } |
5476 | else | |
5477 | { | |
5478 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5479 | gdb_assert (this_cu->cu == NULL); | |
dee91e82 DE |
5480 | cu = xmalloc (sizeof (*cu)); |
5481 | init_one_comp_unit (cu, this_cu); | |
dee91e82 | 5482 | /* If an error occurs while loading, release our storage. */ |
365156ad | 5483 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 5484 | } |
dee91e82 | 5485 | |
b0c7bfa9 | 5486 | /* Get the header. */ |
42e7ad6c DE |
5487 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
5488 | { | |
5489 | /* We already have the header, there's no need to read it in again. */ | |
5490 | info_ptr += cu->header.first_die_offset.cu_off; | |
5491 | } | |
5492 | else | |
5493 | { | |
3019eac3 | 5494 | if (this_cu->is_debug_types) |
dee91e82 DE |
5495 | { |
5496 | ULONGEST signature; | |
42e7ad6c | 5497 | cu_offset type_offset_in_tu; |
dee91e82 | 5498 | |
4bdcc0c1 DE |
5499 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
5500 | abbrev_section, info_ptr, | |
42e7ad6c DE |
5501 | &signature, |
5502 | &type_offset_in_tu); | |
dee91e82 | 5503 | |
42e7ad6c DE |
5504 | /* Since per_cu is the first member of struct signatured_type, |
5505 | we can go from a pointer to one to a pointer to the other. */ | |
5506 | sig_type = (struct signatured_type *) this_cu; | |
5507 | gdb_assert (sig_type->signature == signature); | |
5508 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
5509 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
5510 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
5511 | ||
42e7ad6c DE |
5512 | /* LENGTH has not been set yet for type units if we're |
5513 | using .gdb_index. */ | |
1ce1cefd | 5514 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
5515 | |
5516 | /* Establish the type offset that can be used to lookup the type. */ | |
5517 | sig_type->type_offset_in_section.sect_off = | |
5518 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
5519 | } |
5520 | else | |
5521 | { | |
4bdcc0c1 DE |
5522 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
5523 | abbrev_section, | |
5524 | info_ptr, 0); | |
dee91e82 DE |
5525 | |
5526 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 5527 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
5528 | } |
5529 | } | |
10b3939b | 5530 | |
6caca83c | 5531 | /* Skip dummy compilation units. */ |
dee91e82 | 5532 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
5533 | || peek_abbrev_code (abfd, info_ptr) == 0) |
5534 | { | |
dee91e82 | 5535 | do_cleanups (cleanups); |
21b2bd31 | 5536 | return; |
6caca83c CC |
5537 | } |
5538 | ||
433df2d4 DE |
5539 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
5540 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
5541 | done. Note that it's important that if the CU had an abbrev table |
5542 | on entry we don't free it when we're done: Somewhere up the call stack | |
5543 | it may be in use. */ | |
f4dc4d17 DE |
5544 | if (abbrev_table != NULL) |
5545 | { | |
5546 | gdb_assert (cu->abbrev_table == NULL); | |
5547 | gdb_assert (cu->header.abbrev_offset.sect_off | |
5548 | == abbrev_table->offset.sect_off); | |
5549 | cu->abbrev_table = abbrev_table; | |
5550 | } | |
5551 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 5552 | { |
4bdcc0c1 | 5553 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
5554 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5555 | } | |
42e7ad6c DE |
5556 | else if (rereading_dwo_cu) |
5557 | { | |
5558 | dwarf2_free_abbrev_table (cu); | |
5559 | dwarf2_read_abbrevs (cu, abbrev_section); | |
5560 | } | |
af703f96 | 5561 | |
dee91e82 | 5562 | /* Read the top level CU/TU die. */ |
3019eac3 | 5563 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 5564 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 5565 | |
b0c7bfa9 DE |
5566 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
5567 | from the DWO file. | |
5568 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
5569 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
5570 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5571 | if (attr) | |
5572 | { | |
3019eac3 | 5573 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 5574 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
5575 | |
5576 | if (has_children) | |
6a506a2d DE |
5577 | { |
5578 | complaint (&symfile_complaints, | |
5579 | _("compilation unit with DW_AT_GNU_dwo_name" | |
5580 | " has children (offset 0x%x) [in module %s]"), | |
5581 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
5582 | } | |
b0c7bfa9 | 5583 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 5584 | if (dwo_unit != NULL) |
3019eac3 | 5585 | { |
6a506a2d DE |
5586 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
5587 | abbrev_table != NULL, | |
a2ce51a0 | 5588 | comp_unit_die, NULL, |
6a506a2d DE |
5589 | &reader, &info_ptr, |
5590 | &dwo_comp_unit_die, &has_children) == 0) | |
5591 | { | |
5592 | /* Dummy die. */ | |
5593 | do_cleanups (cleanups); | |
5594 | return; | |
5595 | } | |
5596 | comp_unit_die = dwo_comp_unit_die; | |
5597 | } | |
5598 | else | |
5599 | { | |
5600 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
5601 | the stub. A complaint has already been logged. There's | |
5602 | not much more we can do except pass on the stub DIE to | |
5603 | die_reader_func. We don't want to throw an error on bad | |
5604 | debug info. */ | |
3019eac3 DE |
5605 | } |
5606 | } | |
5607 | ||
b0c7bfa9 | 5608 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
5609 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
5610 | ||
b0c7bfa9 | 5611 | /* Done, clean up. */ |
365156ad | 5612 | if (free_cu_cleanup != NULL) |
348e048f | 5613 | { |
365156ad TT |
5614 | if (keep) |
5615 | { | |
5616 | /* We've successfully allocated this compilation unit. Let our | |
5617 | caller clean it up when finished with it. */ | |
5618 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 5619 | |
365156ad TT |
5620 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5621 | So we have to manually free the abbrev table. */ | |
5622 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 5623 | |
365156ad TT |
5624 | /* Link this CU into read_in_chain. */ |
5625 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5626 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5627 | } | |
5628 | else | |
5629 | do_cleanups (free_cu_cleanup); | |
348e048f | 5630 | } |
365156ad TT |
5631 | |
5632 | do_cleanups (cleanups); | |
dee91e82 DE |
5633 | } |
5634 | ||
33e80786 DE |
5635 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
5636 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
5637 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
5638 | |
5639 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 5640 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
5641 | |
5642 | We fill in THIS_CU->length. | |
5643 | ||
5644 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
5645 | linker) then DIE_READER_FUNC will not get called. | |
5646 | ||
5647 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5648 | This is done in order to not leave THIS_CU->cu in a state where we have |
5649 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
5650 | |
5651 | static void | |
5652 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 5653 | struct dwo_file *dwo_file, |
dee91e82 DE |
5654 | die_reader_func_ftype *die_reader_func, |
5655 | void *data) | |
5656 | { | |
5657 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 5658 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5659 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 5660 | struct dwarf2_section_info *abbrev_section; |
dee91e82 | 5661 | struct dwarf2_cu cu; |
d521ce57 | 5662 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
5663 | struct die_reader_specs reader; |
5664 | struct cleanup *cleanups; | |
5665 | struct die_info *comp_unit_die; | |
5666 | int has_children; | |
5667 | ||
b4f54984 | 5668 | if (dwarf_die_debug) |
09406207 DE |
5669 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
5670 | this_cu->is_debug_types ? "type" : "comp", | |
5671 | this_cu->offset.sect_off); | |
5672 | ||
dee91e82 DE |
5673 | gdb_assert (this_cu->cu == NULL); |
5674 | ||
33e80786 DE |
5675 | abbrev_section = (dwo_file != NULL |
5676 | ? &dwo_file->sections.abbrev | |
5677 | : get_abbrev_section_for_cu (this_cu)); | |
5678 | ||
dee91e82 DE |
5679 | /* This is cheap if the section is already read in. */ |
5680 | dwarf2_read_section (objfile, section); | |
5681 | ||
5682 | init_one_comp_unit (&cu, this_cu); | |
5683 | ||
5684 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
5685 | ||
5686 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
5687 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
5688 | abbrev_section, info_ptr, | |
3019eac3 | 5689 | this_cu->is_debug_types); |
dee91e82 | 5690 | |
1ce1cefd | 5691 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
5692 | |
5693 | /* Skip dummy compilation units. */ | |
5694 | if (info_ptr >= begin_info_ptr + this_cu->length | |
5695 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 5696 | { |
dee91e82 | 5697 | do_cleanups (cleanups); |
21b2bd31 | 5698 | return; |
93311388 | 5699 | } |
72bf9492 | 5700 | |
dee91e82 DE |
5701 | dwarf2_read_abbrevs (&cu, abbrev_section); |
5702 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
5703 | ||
3019eac3 | 5704 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
5705 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
5706 | ||
5707 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5708 | ||
5709 | do_cleanups (cleanups); | |
5710 | } | |
5711 | ||
3019eac3 DE |
5712 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
5713 | does not lookup the specified DWO file. | |
5714 | This cannot be used to read DWO files. | |
dee91e82 DE |
5715 | |
5716 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5717 | This is done in order to not leave THIS_CU->cu in a state where we have |
5718 | to care whether it refers to the "main" CU or the DWO CU. | |
5719 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
5720 | |
5721 | static void | |
5722 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
5723 | die_reader_func_ftype *die_reader_func, | |
5724 | void *data) | |
5725 | { | |
33e80786 | 5726 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 5727 | } |
0018ea6f DE |
5728 | \f |
5729 | /* Type Unit Groups. | |
dee91e82 | 5730 | |
0018ea6f DE |
5731 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
5732 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
5733 | so that all types coming from the same compilation (.o file) are grouped | |
5734 | together. A future step could be to put the types in the same symtab as | |
5735 | the CU the types ultimately came from. */ | |
ff013f42 | 5736 | |
f4dc4d17 DE |
5737 | static hashval_t |
5738 | hash_type_unit_group (const void *item) | |
5739 | { | |
094b34ac | 5740 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 5741 | |
094b34ac | 5742 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5743 | } |
348e048f DE |
5744 | |
5745 | static int | |
f4dc4d17 | 5746 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5747 | { |
f4dc4d17 DE |
5748 | const struct type_unit_group *lhs = item_lhs; |
5749 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 5750 | |
094b34ac | 5751 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5752 | } |
348e048f | 5753 | |
f4dc4d17 DE |
5754 | /* Allocate a hash table for type unit groups. */ |
5755 | ||
5756 | static htab_t | |
5757 | allocate_type_unit_groups_table (void) | |
5758 | { | |
5759 | return htab_create_alloc_ex (3, | |
5760 | hash_type_unit_group, | |
5761 | eq_type_unit_group, | |
5762 | NULL, | |
5763 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5764 | hashtab_obstack_allocate, | |
5765 | dummy_obstack_deallocate); | |
5766 | } | |
dee91e82 | 5767 | |
f4dc4d17 DE |
5768 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5769 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5770 | of any one psymtab grow too big. */ | |
5771 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5772 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5773 | |
094b34ac | 5774 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5775 | Create the type_unit_group object used to hold one or more TUs. */ |
5776 | ||
5777 | static struct type_unit_group * | |
094b34ac | 5778 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5779 | { |
5780 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5781 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5782 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5783 | |
5784 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5785 | struct type_unit_group); | |
094b34ac | 5786 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 5787 | per_cu->objfile = objfile; |
f4dc4d17 | 5788 | |
094b34ac DE |
5789 | if (dwarf2_per_objfile->using_index) |
5790 | { | |
5791 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5792 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
5793 | } |
5794 | else | |
5795 | { | |
5796 | unsigned int line_offset = line_offset_struct.sect_off; | |
5797 | struct partial_symtab *pst; | |
5798 | char *name; | |
5799 | ||
5800 | /* Give the symtab a useful name for debug purposes. */ | |
5801 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5802 | name = xstrprintf ("<type_units_%d>", | |
5803 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5804 | else | |
5805 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5806 | ||
5807 | pst = create_partial_symtab (per_cu, name); | |
5808 | pst->anonymous = 1; | |
f4dc4d17 | 5809 | |
094b34ac DE |
5810 | xfree (name); |
5811 | } | |
f4dc4d17 | 5812 | |
094b34ac DE |
5813 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5814 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5815 | |
5816 | return tu_group; | |
5817 | } | |
5818 | ||
094b34ac DE |
5819 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5820 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5821 | |
5822 | static struct type_unit_group * | |
ff39bb5e | 5823 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
5824 | { |
5825 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5826 | struct type_unit_group *tu_group; | |
5827 | void **slot; | |
5828 | unsigned int line_offset; | |
5829 | struct type_unit_group type_unit_group_for_lookup; | |
5830 | ||
5831 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5832 | { | |
5833 | dwarf2_per_objfile->type_unit_groups = | |
5834 | allocate_type_unit_groups_table (); | |
5835 | } | |
5836 | ||
5837 | /* Do we need to create a new group, or can we use an existing one? */ | |
5838 | ||
5839 | if (stmt_list) | |
5840 | { | |
5841 | line_offset = DW_UNSND (stmt_list); | |
5842 | ++tu_stats->nr_symtab_sharers; | |
5843 | } | |
5844 | else | |
5845 | { | |
5846 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5847 | We can do various things here like create one group per TU or | |
5848 | spread them over multiple groups to split up the expansion work. | |
5849 | To avoid worst case scenarios (too many groups or too large groups) | |
5850 | we, umm, group them in bunches. */ | |
5851 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5852 | | (tu_stats->nr_stmt_less_type_units | |
5853 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5854 | ++tu_stats->nr_stmt_less_type_units; | |
5855 | } | |
5856 | ||
094b34ac DE |
5857 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5858 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5859 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5860 | &type_unit_group_for_lookup, INSERT); | |
5861 | if (*slot != NULL) | |
5862 | { | |
5863 | tu_group = *slot; | |
5864 | gdb_assert (tu_group != NULL); | |
5865 | } | |
5866 | else | |
5867 | { | |
5868 | sect_offset line_offset_struct; | |
5869 | ||
5870 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5871 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5872 | *slot = tu_group; |
5873 | ++tu_stats->nr_symtabs; | |
5874 | } | |
5875 | ||
5876 | return tu_group; | |
5877 | } | |
0018ea6f DE |
5878 | \f |
5879 | /* Partial symbol tables. */ | |
5880 | ||
5881 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5882 | ||
5883 | The caller must fill in the following details: | |
5884 | dirname, textlow, texthigh. */ | |
5885 | ||
5886 | static struct partial_symtab * | |
5887 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5888 | { | |
5889 | struct objfile *objfile = per_cu->objfile; | |
5890 | struct partial_symtab *pst; | |
5891 | ||
18a94d75 | 5892 | pst = start_psymtab_common (objfile, name, 0, |
0018ea6f DE |
5893 | objfile->global_psymbols.next, |
5894 | objfile->static_psymbols.next); | |
5895 | ||
5896 | pst->psymtabs_addrmap_supported = 1; | |
5897 | ||
5898 | /* This is the glue that links PST into GDB's symbol API. */ | |
5899 | pst->read_symtab_private = per_cu; | |
5900 | pst->read_symtab = dwarf2_read_symtab; | |
5901 | per_cu->v.psymtab = pst; | |
5902 | ||
5903 | return pst; | |
5904 | } | |
5905 | ||
b93601f3 TT |
5906 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
5907 | type. */ | |
5908 | ||
5909 | struct process_psymtab_comp_unit_data | |
5910 | { | |
5911 | /* True if we are reading a DW_TAG_partial_unit. */ | |
5912 | ||
5913 | int want_partial_unit; | |
5914 | ||
5915 | /* The "pretend" language that is used if the CU doesn't declare a | |
5916 | language. */ | |
5917 | ||
5918 | enum language pretend_language; | |
5919 | }; | |
5920 | ||
0018ea6f DE |
5921 | /* die_reader_func for process_psymtab_comp_unit. */ |
5922 | ||
5923 | static void | |
5924 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 5925 | const gdb_byte *info_ptr, |
0018ea6f DE |
5926 | struct die_info *comp_unit_die, |
5927 | int has_children, | |
5928 | void *data) | |
5929 | { | |
5930 | struct dwarf2_cu *cu = reader->cu; | |
5931 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 5932 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f DE |
5933 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
5934 | struct attribute *attr; | |
5935 | CORE_ADDR baseaddr; | |
5936 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
5937 | struct partial_symtab *pst; | |
5938 | int has_pc_info; | |
5939 | const char *filename; | |
b93601f3 | 5940 | struct process_psymtab_comp_unit_data *info = data; |
0018ea6f | 5941 | |
b93601f3 | 5942 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
5943 | return; |
5944 | ||
5945 | gdb_assert (! per_cu->is_debug_types); | |
5946 | ||
b93601f3 | 5947 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
5948 | |
5949 | cu->list_in_scope = &file_symbols; | |
5950 | ||
5951 | /* Allocate a new partial symbol table structure. */ | |
5952 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
5953 | if (attr == NULL || !DW_STRING (attr)) | |
5954 | filename = ""; | |
5955 | else | |
5956 | filename = DW_STRING (attr); | |
5957 | ||
5958 | pst = create_partial_symtab (per_cu, filename); | |
5959 | ||
5960 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
5961 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5962 | if (attr != NULL) | |
5963 | pst->dirname = DW_STRING (attr); | |
5964 | ||
5965 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5966 | ||
5967 | dwarf2_find_base_address (comp_unit_die, cu); | |
5968 | ||
5969 | /* Possibly set the default values of LOWPC and HIGHPC from | |
5970 | `DW_AT_ranges'. */ | |
5971 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, | |
5972 | &best_highpc, cu, pst); | |
5973 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
5974 | /* Store the contiguous range if it is not empty; it can be empty for | |
5975 | CUs with no code. */ | |
5976 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
5977 | gdbarch_adjust_dwarf2_addr (gdbarch, |
5978 | best_lowpc + baseaddr), | |
5979 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
5980 | best_highpc + baseaddr) - 1, | |
5981 | pst); | |
0018ea6f DE |
5982 | |
5983 | /* Check if comp unit has_children. | |
5984 | If so, read the rest of the partial symbols from this comp unit. | |
5985 | If not, there's no more debug_info for this comp unit. */ | |
5986 | if (has_children) | |
5987 | { | |
5988 | struct partial_die_info *first_die; | |
5989 | CORE_ADDR lowpc, highpc; | |
5990 | ||
5991 | lowpc = ((CORE_ADDR) -1); | |
5992 | highpc = ((CORE_ADDR) 0); | |
5993 | ||
5994 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5995 | ||
5996 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
5997 | ! has_pc_info, cu); | |
5998 | ||
5999 | /* If we didn't find a lowpc, set it to highpc to avoid | |
6000 | complaints from `maint check'. */ | |
6001 | if (lowpc == ((CORE_ADDR) -1)) | |
6002 | lowpc = highpc; | |
6003 | ||
6004 | /* If the compilation unit didn't have an explicit address range, | |
6005 | then use the information extracted from its child dies. */ | |
6006 | if (! has_pc_info) | |
6007 | { | |
6008 | best_lowpc = lowpc; | |
6009 | best_highpc = highpc; | |
6010 | } | |
6011 | } | |
3e29f34a MR |
6012 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
6013 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f DE |
6014 | |
6015 | pst->n_global_syms = objfile->global_psymbols.next - | |
6016 | (objfile->global_psymbols.list + pst->globals_offset); | |
6017 | pst->n_static_syms = objfile->static_psymbols.next - | |
6018 | (objfile->static_psymbols.list + pst->statics_offset); | |
6019 | sort_pst_symbols (objfile, pst); | |
6020 | ||
6021 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
6022 | { | |
6023 | int i; | |
6024 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6025 | struct dwarf2_per_cu_data *iter; | |
6026 | ||
6027 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
6028 | post-pass. */ | |
6029 | pst->number_of_dependencies = len; | |
6030 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6031 | len * sizeof (struct symtab *)); | |
6032 | for (i = 0; | |
6033 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6034 | i, iter); | |
6035 | ++i) | |
6036 | pst->dependencies[i] = iter->v.psymtab; | |
6037 | ||
6038 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6039 | } | |
6040 | ||
6041 | /* Get the list of files included in the current compilation unit, | |
6042 | and build a psymtab for each of them. */ | |
6043 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
6044 | ||
b4f54984 | 6045 | if (dwarf_read_debug) |
0018ea6f DE |
6046 | { |
6047 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6048 | ||
6049 | fprintf_unfiltered (gdb_stdlog, | |
6050 | "Psymtab for %s unit @0x%x: %s - %s" | |
6051 | ", %d global, %d static syms\n", | |
6052 | per_cu->is_debug_types ? "type" : "comp", | |
6053 | per_cu->offset.sect_off, | |
6054 | paddress (gdbarch, pst->textlow), | |
6055 | paddress (gdbarch, pst->texthigh), | |
6056 | pst->n_global_syms, pst->n_static_syms); | |
6057 | } | |
6058 | } | |
6059 | ||
6060 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6061 | Process compilation unit THIS_CU for a psymtab. */ | |
6062 | ||
6063 | static void | |
6064 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
6065 | int want_partial_unit, |
6066 | enum language pretend_language) | |
0018ea6f | 6067 | { |
b93601f3 TT |
6068 | struct process_psymtab_comp_unit_data info; |
6069 | ||
0018ea6f DE |
6070 | /* If this compilation unit was already read in, free the |
6071 | cached copy in order to read it in again. This is | |
6072 | necessary because we skipped some symbols when we first | |
6073 | read in the compilation unit (see load_partial_dies). | |
6074 | This problem could be avoided, but the benefit is unclear. */ | |
6075 | if (this_cu->cu != NULL) | |
6076 | free_one_cached_comp_unit (this_cu); | |
6077 | ||
6078 | gdb_assert (! this_cu->is_debug_types); | |
b93601f3 TT |
6079 | info.want_partial_unit = want_partial_unit; |
6080 | info.pretend_language = pretend_language; | |
0018ea6f DE |
6081 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
6082 | process_psymtab_comp_unit_reader, | |
b93601f3 | 6083 | &info); |
0018ea6f DE |
6084 | |
6085 | /* Age out any secondary CUs. */ | |
6086 | age_cached_comp_units (); | |
6087 | } | |
f4dc4d17 DE |
6088 | |
6089 | /* Reader function for build_type_psymtabs. */ | |
6090 | ||
6091 | static void | |
6092 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6093 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
6094 | struct die_info *type_unit_die, |
6095 | int has_children, | |
6096 | void *data) | |
6097 | { | |
6098 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6099 | struct dwarf2_cu *cu = reader->cu; | |
6100 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 6101 | struct signatured_type *sig_type; |
f4dc4d17 DE |
6102 | struct type_unit_group *tu_group; |
6103 | struct attribute *attr; | |
6104 | struct partial_die_info *first_die; | |
6105 | CORE_ADDR lowpc, highpc; | |
6106 | struct partial_symtab *pst; | |
6107 | ||
6108 | gdb_assert (data == NULL); | |
0186c6a7 DE |
6109 | gdb_assert (per_cu->is_debug_types); |
6110 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
6111 | |
6112 | if (! has_children) | |
6113 | return; | |
6114 | ||
6115 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 6116 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 6117 | |
0186c6a7 | 6118 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
6119 | |
6120 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
6121 | cu->list_in_scope = &file_symbols; | |
6122 | pst = create_partial_symtab (per_cu, ""); | |
6123 | pst->anonymous = 1; | |
6124 | ||
6125 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6126 | ||
6127 | lowpc = (CORE_ADDR) -1; | |
6128 | highpc = (CORE_ADDR) 0; | |
6129 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
6130 | ||
6131 | pst->n_global_syms = objfile->global_psymbols.next - | |
6132 | (objfile->global_psymbols.list + pst->globals_offset); | |
6133 | pst->n_static_syms = objfile->static_psymbols.next - | |
6134 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 6135 | sort_pst_symbols (objfile, pst); |
f4dc4d17 DE |
6136 | } |
6137 | ||
73051182 DE |
6138 | /* Struct used to sort TUs by their abbreviation table offset. */ |
6139 | ||
6140 | struct tu_abbrev_offset | |
6141 | { | |
6142 | struct signatured_type *sig_type; | |
6143 | sect_offset abbrev_offset; | |
6144 | }; | |
6145 | ||
6146 | /* Helper routine for build_type_psymtabs_1, passed to qsort. */ | |
6147 | ||
6148 | static int | |
6149 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
6150 | { | |
6151 | const struct tu_abbrev_offset * const *a = ap; | |
6152 | const struct tu_abbrev_offset * const *b = bp; | |
6153 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
6154 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
6155 | ||
6156 | return (aoff > boff) - (aoff < boff); | |
6157 | } | |
6158 | ||
6159 | /* Efficiently read all the type units. | |
6160 | This does the bulk of the work for build_type_psymtabs. | |
6161 | ||
6162 | The efficiency is because we sort TUs by the abbrev table they use and | |
6163 | only read each abbrev table once. In one program there are 200K TUs | |
6164 | sharing 8K abbrev tables. | |
6165 | ||
6166 | The main purpose of this function is to support building the | |
6167 | dwarf2_per_objfile->type_unit_groups table. | |
6168 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
6169 | can collapse the search space by grouping them by stmt_list. | |
6170 | The savings can be significant, in the same program from above the 200K TUs | |
6171 | share 8K stmt_list tables. | |
6172 | ||
6173 | FUNC is expected to call get_type_unit_group, which will create the | |
6174 | struct type_unit_group if necessary and add it to | |
6175 | dwarf2_per_objfile->type_unit_groups. */ | |
6176 | ||
6177 | static void | |
6178 | build_type_psymtabs_1 (void) | |
6179 | { | |
6180 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6181 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6182 | struct cleanup *cleanups; | |
6183 | struct abbrev_table *abbrev_table; | |
6184 | sect_offset abbrev_offset; | |
6185 | struct tu_abbrev_offset *sorted_by_abbrev; | |
6186 | struct type_unit_group **iter; | |
6187 | int i; | |
6188 | ||
6189 | /* It's up to the caller to not call us multiple times. */ | |
6190 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
6191 | ||
6192 | if (dwarf2_per_objfile->n_type_units == 0) | |
6193 | return; | |
6194 | ||
6195 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
6196 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
6197 | read each abbrev table in. | |
6198 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
6199 | This is simpler and efficient enough for now. | |
6200 | ||
6201 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
6202 | symtab to use). Typically TUs with the same abbrev offset have the same | |
6203 | stmt_list value too so in practice this should work well. | |
6204 | ||
6205 | The basic algorithm here is: | |
6206 | ||
6207 | sort TUs by abbrev table | |
6208 | for each TU with same abbrev table: | |
6209 | read abbrev table if first user | |
6210 | read TU top level DIE | |
6211 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
6212 | call FUNC */ | |
6213 | ||
b4f54984 | 6214 | if (dwarf_read_debug) |
73051182 DE |
6215 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
6216 | ||
6217 | /* Sort in a separate table to maintain the order of all_type_units | |
6218 | for .gdb_index: TU indices directly index all_type_units. */ | |
6219 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
6220 | dwarf2_per_objfile->n_type_units); | |
6221 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6222 | { | |
6223 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
6224 | ||
6225 | sorted_by_abbrev[i].sig_type = sig_type; | |
6226 | sorted_by_abbrev[i].abbrev_offset = | |
6227 | read_abbrev_offset (sig_type->per_cu.section, | |
6228 | sig_type->per_cu.offset); | |
6229 | } | |
6230 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
6231 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
6232 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
6233 | ||
6234 | abbrev_offset.sect_off = ~(unsigned) 0; | |
6235 | abbrev_table = NULL; | |
6236 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
6237 | ||
6238 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6239 | { | |
6240 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
6241 | ||
6242 | /* Switch to the next abbrev table if necessary. */ | |
6243 | if (abbrev_table == NULL | |
6244 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
6245 | { | |
6246 | if (abbrev_table != NULL) | |
6247 | { | |
6248 | abbrev_table_free (abbrev_table); | |
6249 | /* Reset to NULL in case abbrev_table_read_table throws | |
6250 | an error: abbrev_table_free_cleanup will get called. */ | |
6251 | abbrev_table = NULL; | |
6252 | } | |
6253 | abbrev_offset = tu->abbrev_offset; | |
6254 | abbrev_table = | |
6255 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
6256 | abbrev_offset); | |
6257 | ++tu_stats->nr_uniq_abbrev_tables; | |
6258 | } | |
6259 | ||
6260 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
6261 | build_type_psymtabs_reader, NULL); | |
6262 | } | |
6263 | ||
73051182 | 6264 | do_cleanups (cleanups); |
6aa5f3a6 | 6265 | } |
73051182 | 6266 | |
6aa5f3a6 DE |
6267 | /* Print collected type unit statistics. */ |
6268 | ||
6269 | static void | |
6270 | print_tu_stats (void) | |
6271 | { | |
6272 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6273 | ||
6274 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
6275 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
6276 | dwarf2_per_objfile->n_type_units); | |
6277 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
6278 | tu_stats->nr_uniq_abbrev_tables); | |
6279 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
6280 | tu_stats->nr_symtabs); | |
6281 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
6282 | tu_stats->nr_symtab_sharers); | |
6283 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
6284 | tu_stats->nr_stmt_less_type_units); | |
6285 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
6286 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
6287 | } |
6288 | ||
f4dc4d17 DE |
6289 | /* Traversal function for build_type_psymtabs. */ |
6290 | ||
6291 | static int | |
6292 | build_type_psymtab_dependencies (void **slot, void *info) | |
6293 | { | |
6294 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6295 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 6296 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 6297 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
6298 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
6299 | struct signatured_type *iter; | |
f4dc4d17 DE |
6300 | int i; |
6301 | ||
6302 | gdb_assert (len > 0); | |
0186c6a7 | 6303 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
6304 | |
6305 | pst->number_of_dependencies = len; | |
6306 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6307 | len * sizeof (struct psymtab *)); | |
6308 | for (i = 0; | |
0186c6a7 | 6309 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
6310 | ++i) |
6311 | { | |
0186c6a7 DE |
6312 | gdb_assert (iter->per_cu.is_debug_types); |
6313 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 6314 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
6315 | } |
6316 | ||
0186c6a7 | 6317 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
6318 | |
6319 | return 1; | |
6320 | } | |
6321 | ||
6322 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6323 | Build partial symbol tables for the .debug_types comp-units. */ | |
6324 | ||
6325 | static void | |
6326 | build_type_psymtabs (struct objfile *objfile) | |
6327 | { | |
0e50663e | 6328 | if (! create_all_type_units (objfile)) |
348e048f DE |
6329 | return; |
6330 | ||
73051182 | 6331 | build_type_psymtabs_1 (); |
6aa5f3a6 | 6332 | } |
f4dc4d17 | 6333 | |
6aa5f3a6 DE |
6334 | /* Traversal function for process_skeletonless_type_unit. |
6335 | Read a TU in a DWO file and build partial symbols for it. */ | |
6336 | ||
6337 | static int | |
6338 | process_skeletonless_type_unit (void **slot, void *info) | |
6339 | { | |
6340 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
6341 | struct objfile *objfile = info; | |
6342 | struct signatured_type find_entry, *entry; | |
6343 | ||
6344 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
6345 | ||
6346 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6347 | { | |
6348 | dwarf2_per_objfile->signatured_types | |
6349 | = allocate_signatured_type_table (objfile); | |
6350 | } | |
6351 | ||
6352 | find_entry.signature = dwo_unit->signature; | |
6353 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
6354 | INSERT); | |
6355 | /* If we've already seen this type there's nothing to do. What's happening | |
6356 | is we're doing our own version of comdat-folding here. */ | |
6357 | if (*slot != NULL) | |
6358 | return 1; | |
6359 | ||
6360 | /* This does the job that create_all_type_units would have done for | |
6361 | this TU. */ | |
6362 | entry = add_type_unit (dwo_unit->signature, slot); | |
6363 | fill_in_sig_entry_from_dwo_entry (objfile, entry, dwo_unit); | |
6364 | *slot = entry; | |
6365 | ||
6366 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6367 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
6368 | build_type_psymtabs_reader, NULL); | |
6369 | ||
6370 | return 1; | |
6371 | } | |
6372 | ||
6373 | /* Traversal function for process_skeletonless_type_units. */ | |
6374 | ||
6375 | static int | |
6376 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
6377 | { | |
6378 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
6379 | ||
6380 | if (dwo_file->tus != NULL) | |
6381 | { | |
6382 | htab_traverse_noresize (dwo_file->tus, | |
6383 | process_skeletonless_type_unit, info); | |
6384 | } | |
6385 | ||
6386 | return 1; | |
6387 | } | |
6388 | ||
6389 | /* Scan all TUs of DWO files, verifying we've processed them. | |
6390 | This is needed in case a TU was emitted without its skeleton. | |
6391 | Note: This can't be done until we know what all the DWO files are. */ | |
6392 | ||
6393 | static void | |
6394 | process_skeletonless_type_units (struct objfile *objfile) | |
6395 | { | |
6396 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
6397 | if (get_dwp_file () == NULL | |
6398 | && dwarf2_per_objfile->dwo_files != NULL) | |
6399 | { | |
6400 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
6401 | process_dwo_file_for_skeletonless_type_units, | |
6402 | objfile); | |
6403 | } | |
348e048f DE |
6404 | } |
6405 | ||
60606b2c TT |
6406 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
6407 | ||
6408 | static void | |
6409 | psymtabs_addrmap_cleanup (void *o) | |
6410 | { | |
6411 | struct objfile *objfile = o; | |
ec61707d | 6412 | |
60606b2c TT |
6413 | objfile->psymtabs_addrmap = NULL; |
6414 | } | |
6415 | ||
95554aad TT |
6416 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
6417 | ||
6418 | static void | |
6419 | set_partial_user (struct objfile *objfile) | |
6420 | { | |
6421 | int i; | |
6422 | ||
6423 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
6424 | { | |
8832e7e3 | 6425 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
95554aad TT |
6426 | struct partial_symtab *pst = per_cu->v.psymtab; |
6427 | int j; | |
6428 | ||
36586728 TT |
6429 | if (pst == NULL) |
6430 | continue; | |
6431 | ||
95554aad TT |
6432 | for (j = 0; j < pst->number_of_dependencies; ++j) |
6433 | { | |
6434 | /* Set the 'user' field only if it is not already set. */ | |
6435 | if (pst->dependencies[j]->user == NULL) | |
6436 | pst->dependencies[j]->user = pst; | |
6437 | } | |
6438 | } | |
6439 | } | |
6440 | ||
93311388 DE |
6441 | /* Build the partial symbol table by doing a quick pass through the |
6442 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 6443 | |
93311388 | 6444 | static void |
c67a9c90 | 6445 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 6446 | { |
60606b2c TT |
6447 | struct cleanup *back_to, *addrmap_cleanup; |
6448 | struct obstack temp_obstack; | |
21b2bd31 | 6449 | int i; |
93311388 | 6450 | |
b4f54984 | 6451 | if (dwarf_read_debug) |
45cfd468 DE |
6452 | { |
6453 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 6454 | objfile_name (objfile)); |
45cfd468 DE |
6455 | } |
6456 | ||
98bfdba5 PA |
6457 | dwarf2_per_objfile->reading_partial_symbols = 1; |
6458 | ||
be391dca | 6459 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 6460 | |
93311388 DE |
6461 | /* Any cached compilation units will be linked by the per-objfile |
6462 | read_in_chain. Make sure to free them when we're done. */ | |
6463 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 6464 | |
348e048f DE |
6465 | build_type_psymtabs (objfile); |
6466 | ||
93311388 | 6467 | create_all_comp_units (objfile); |
c906108c | 6468 | |
60606b2c TT |
6469 | /* Create a temporary address map on a temporary obstack. We later |
6470 | copy this to the final obstack. */ | |
6471 | obstack_init (&temp_obstack); | |
6472 | make_cleanup_obstack_free (&temp_obstack); | |
6473 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
6474 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 6475 | |
21b2bd31 | 6476 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 6477 | { |
8832e7e3 | 6478 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
aaa75496 | 6479 | |
b93601f3 | 6480 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 6481 | } |
ff013f42 | 6482 | |
6aa5f3a6 DE |
6483 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
6484 | process_skeletonless_type_units (objfile); | |
6485 | ||
6486 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
6487 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
6488 | { | |
6489 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
6490 | build_type_psymtab_dependencies, NULL); | |
6491 | } | |
6492 | ||
b4f54984 | 6493 | if (dwarf_read_debug) |
6aa5f3a6 DE |
6494 | print_tu_stats (); |
6495 | ||
95554aad TT |
6496 | set_partial_user (objfile); |
6497 | ||
ff013f42 JK |
6498 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
6499 | &objfile->objfile_obstack); | |
60606b2c | 6500 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 6501 | |
ae038cb0 | 6502 | do_cleanups (back_to); |
45cfd468 | 6503 | |
b4f54984 | 6504 | if (dwarf_read_debug) |
45cfd468 | 6505 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 6506 | objfile_name (objfile)); |
ae038cb0 DJ |
6507 | } |
6508 | ||
3019eac3 | 6509 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
6510 | |
6511 | static void | |
dee91e82 | 6512 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 6513 | const gdb_byte *info_ptr, |
dee91e82 DE |
6514 | struct die_info *comp_unit_die, |
6515 | int has_children, | |
6516 | void *data) | |
ae038cb0 | 6517 | { |
dee91e82 | 6518 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 6519 | |
95554aad | 6520 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 6521 | |
ae038cb0 DJ |
6522 | /* Check if comp unit has_children. |
6523 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 6524 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 6525 | if (has_children) |
dee91e82 DE |
6526 | load_partial_dies (reader, info_ptr, 0); |
6527 | } | |
98bfdba5 | 6528 | |
dee91e82 DE |
6529 | /* Load the partial DIEs for a secondary CU into memory. |
6530 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 6531 | |
dee91e82 DE |
6532 | static void |
6533 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
6534 | { | |
f4dc4d17 DE |
6535 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6536 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
6537 | } |
6538 | ||
ae038cb0 | 6539 | static void |
36586728 TT |
6540 | read_comp_units_from_section (struct objfile *objfile, |
6541 | struct dwarf2_section_info *section, | |
6542 | unsigned int is_dwz, | |
6543 | int *n_allocated, | |
6544 | int *n_comp_units, | |
6545 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 6546 | { |
d521ce57 | 6547 | const gdb_byte *info_ptr; |
a32a8923 | 6548 | bfd *abfd = get_section_bfd_owner (section); |
be391dca | 6549 | |
b4f54984 | 6550 | if (dwarf_read_debug) |
bf6af496 | 6551 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
6552 | get_section_name (section), |
6553 | get_section_file_name (section)); | |
bf6af496 | 6554 | |
36586728 | 6555 | dwarf2_read_section (objfile, section); |
ae038cb0 | 6556 | |
36586728 | 6557 | info_ptr = section->buffer; |
6e70227d | 6558 | |
36586728 | 6559 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 6560 | { |
c764a876 | 6561 | unsigned int length, initial_length_size; |
ae038cb0 | 6562 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 6563 | sect_offset offset; |
ae038cb0 | 6564 | |
36586728 | 6565 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
6566 | |
6567 | /* Read just enough information to find out where the next | |
6568 | compilation unit is. */ | |
36586728 | 6569 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
6570 | |
6571 | /* Save the compilation unit for later lookup. */ | |
6572 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
6573 | sizeof (struct dwarf2_per_cu_data)); | |
6574 | memset (this_cu, 0, sizeof (*this_cu)); | |
6575 | this_cu->offset = offset; | |
c764a876 | 6576 | this_cu->length = length + initial_length_size; |
36586728 | 6577 | this_cu->is_dwz = is_dwz; |
9291a0cd | 6578 | this_cu->objfile = objfile; |
8a0459fd | 6579 | this_cu->section = section; |
ae038cb0 | 6580 | |
36586728 | 6581 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 6582 | { |
36586728 TT |
6583 | *n_allocated *= 2; |
6584 | *all_comp_units = xrealloc (*all_comp_units, | |
6585 | *n_allocated | |
6586 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 6587 | } |
36586728 TT |
6588 | (*all_comp_units)[*n_comp_units] = this_cu; |
6589 | ++*n_comp_units; | |
ae038cb0 DJ |
6590 | |
6591 | info_ptr = info_ptr + this_cu->length; | |
6592 | } | |
36586728 TT |
6593 | } |
6594 | ||
6595 | /* Create a list of all compilation units in OBJFILE. | |
6596 | This is only done for -readnow and building partial symtabs. */ | |
6597 | ||
6598 | static void | |
6599 | create_all_comp_units (struct objfile *objfile) | |
6600 | { | |
6601 | int n_allocated; | |
6602 | int n_comp_units; | |
6603 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 6604 | struct dwz_file *dwz; |
36586728 TT |
6605 | |
6606 | n_comp_units = 0; | |
6607 | n_allocated = 10; | |
6608 | all_comp_units = xmalloc (n_allocated | |
6609 | * sizeof (struct dwarf2_per_cu_data *)); | |
6610 | ||
6611 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
6612 | &n_allocated, &n_comp_units, &all_comp_units); | |
6613 | ||
4db1a1dc TT |
6614 | dwz = dwarf2_get_dwz_file (); |
6615 | if (dwz != NULL) | |
6616 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
6617 | &n_allocated, &n_comp_units, | |
6618 | &all_comp_units); | |
ae038cb0 DJ |
6619 | |
6620 | dwarf2_per_objfile->all_comp_units | |
6621 | = obstack_alloc (&objfile->objfile_obstack, | |
6622 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6623 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
6624 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6625 | xfree (all_comp_units); | |
6626 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
6627 | } |
6628 | ||
5734ee8b | 6629 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 6630 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 6631 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
6632 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
6633 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 6634 | |
72bf9492 DJ |
6635 | static void |
6636 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
6637 | CORE_ADDR *highpc, int set_addrmap, |
6638 | struct dwarf2_cu *cu) | |
c906108c | 6639 | { |
72bf9492 | 6640 | struct partial_die_info *pdi; |
c906108c | 6641 | |
91c24f0a DC |
6642 | /* Now, march along the PDI's, descending into ones which have |
6643 | interesting children but skipping the children of the other ones, | |
6644 | until we reach the end of the compilation unit. */ | |
c906108c | 6645 | |
72bf9492 | 6646 | pdi = first_die; |
91c24f0a | 6647 | |
72bf9492 DJ |
6648 | while (pdi != NULL) |
6649 | { | |
6650 | fixup_partial_die (pdi, cu); | |
c906108c | 6651 | |
f55ee35c | 6652 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
6653 | children, so we need to look at them. Ditto for anonymous |
6654 | enums. */ | |
933c6fe4 | 6655 | |
72bf9492 | 6656 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
6657 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
6658 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 6659 | { |
72bf9492 | 6660 | switch (pdi->tag) |
c906108c SS |
6661 | { |
6662 | case DW_TAG_subprogram: | |
cdc07690 | 6663 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 6664 | break; |
72929c62 | 6665 | case DW_TAG_constant: |
c906108c SS |
6666 | case DW_TAG_variable: |
6667 | case DW_TAG_typedef: | |
91c24f0a | 6668 | case DW_TAG_union_type: |
72bf9492 | 6669 | if (!pdi->is_declaration) |
63d06c5c | 6670 | { |
72bf9492 | 6671 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
6672 | } |
6673 | break; | |
c906108c | 6674 | case DW_TAG_class_type: |
680b30c7 | 6675 | case DW_TAG_interface_type: |
c906108c | 6676 | case DW_TAG_structure_type: |
72bf9492 | 6677 | if (!pdi->is_declaration) |
c906108c | 6678 | { |
72bf9492 | 6679 | add_partial_symbol (pdi, cu); |
c906108c SS |
6680 | } |
6681 | break; | |
91c24f0a | 6682 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
6683 | if (!pdi->is_declaration) |
6684 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
6685 | break; |
6686 | case DW_TAG_base_type: | |
a02abb62 | 6687 | case DW_TAG_subrange_type: |
c906108c | 6688 | /* File scope base type definitions are added to the partial |
c5aa993b | 6689 | symbol table. */ |
72bf9492 | 6690 | add_partial_symbol (pdi, cu); |
c906108c | 6691 | break; |
d9fa45fe | 6692 | case DW_TAG_namespace: |
cdc07690 | 6693 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 6694 | break; |
5d7cb8df | 6695 | case DW_TAG_module: |
cdc07690 | 6696 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 6697 | break; |
95554aad TT |
6698 | case DW_TAG_imported_unit: |
6699 | { | |
6700 | struct dwarf2_per_cu_data *per_cu; | |
6701 | ||
f4dc4d17 DE |
6702 | /* For now we don't handle imported units in type units. */ |
6703 | if (cu->per_cu->is_debug_types) | |
6704 | { | |
6705 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6706 | " supported in type units [in module %s]"), | |
4262abfb | 6707 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
6708 | } |
6709 | ||
95554aad | 6710 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 6711 | pdi->is_dwz, |
95554aad TT |
6712 | cu->objfile); |
6713 | ||
6714 | /* Go read the partial unit, if needed. */ | |
6715 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 6716 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 6717 | |
f4dc4d17 | 6718 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 6719 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
6720 | } |
6721 | break; | |
74921315 KS |
6722 | case DW_TAG_imported_declaration: |
6723 | add_partial_symbol (pdi, cu); | |
6724 | break; | |
c906108c SS |
6725 | default: |
6726 | break; | |
6727 | } | |
6728 | } | |
6729 | ||
72bf9492 DJ |
6730 | /* If the die has a sibling, skip to the sibling. */ |
6731 | ||
6732 | pdi = pdi->die_sibling; | |
6733 | } | |
6734 | } | |
6735 | ||
6736 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 6737 | |
72bf9492 | 6738 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
6739 | name is concatenated with "::" and the partial DIE's name. For |
6740 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
6741 | Enumerators are an exception; they use the scope of their parent |
6742 | enumeration type, i.e. the name of the enumeration type is not | |
6743 | prepended to the enumerator. | |
91c24f0a | 6744 | |
72bf9492 DJ |
6745 | There are two complexities. One is DW_AT_specification; in this |
6746 | case "parent" means the parent of the target of the specification, | |
6747 | instead of the direct parent of the DIE. The other is compilers | |
6748 | which do not emit DW_TAG_namespace; in this case we try to guess | |
6749 | the fully qualified name of structure types from their members' | |
6750 | linkage names. This must be done using the DIE's children rather | |
6751 | than the children of any DW_AT_specification target. We only need | |
6752 | to do this for structures at the top level, i.e. if the target of | |
6753 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
6754 | have a parent. */ | |
6755 | ||
6756 | /* Compute the scope prefix associated with PDI's parent, in | |
6757 | compilation unit CU. The result will be allocated on CU's | |
6758 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
6759 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 6760 | static const char * |
72bf9492 DJ |
6761 | partial_die_parent_scope (struct partial_die_info *pdi, |
6762 | struct dwarf2_cu *cu) | |
6763 | { | |
15d034d0 | 6764 | const char *grandparent_scope; |
72bf9492 | 6765 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 6766 | |
72bf9492 DJ |
6767 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
6768 | then this means the parent of the specification DIE. */ | |
6769 | ||
6770 | real_pdi = pdi; | |
72bf9492 | 6771 | while (real_pdi->has_specification) |
36586728 TT |
6772 | real_pdi = find_partial_die (real_pdi->spec_offset, |
6773 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
6774 | |
6775 | parent = real_pdi->die_parent; | |
6776 | if (parent == NULL) | |
6777 | return NULL; | |
6778 | ||
6779 | if (parent->scope_set) | |
6780 | return parent->scope; | |
6781 | ||
6782 | fixup_partial_die (parent, cu); | |
6783 | ||
10b3939b | 6784 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 6785 | |
acebe513 UW |
6786 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
6787 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
6788 | Work around this problem here. */ | |
6789 | if (cu->language == language_cplus | |
6e70227d | 6790 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
6791 | && strcmp (parent->name, "::") == 0 |
6792 | && grandparent_scope == NULL) | |
6793 | { | |
6794 | parent->scope = NULL; | |
6795 | parent->scope_set = 1; | |
6796 | return NULL; | |
6797 | } | |
6798 | ||
9c6c53f7 SA |
6799 | if (pdi->tag == DW_TAG_enumerator) |
6800 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
6801 | parent->scope = grandparent_scope; | |
6802 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 6803 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
6804 | || parent->tag == DW_TAG_structure_type |
6805 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 6806 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
6807 | || parent->tag == DW_TAG_union_type |
6808 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
6809 | { |
6810 | if (grandparent_scope == NULL) | |
6811 | parent->scope = parent->name; | |
6812 | else | |
3e43a32a MS |
6813 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
6814 | grandparent_scope, | |
f55ee35c | 6815 | parent->name, 0, cu); |
72bf9492 | 6816 | } |
72bf9492 DJ |
6817 | else |
6818 | { | |
6819 | /* FIXME drow/2004-04-01: What should we be doing with | |
6820 | function-local names? For partial symbols, we should probably be | |
6821 | ignoring them. */ | |
6822 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6823 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 6824 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 6825 | parent->scope = grandparent_scope; |
c906108c SS |
6826 | } |
6827 | ||
72bf9492 DJ |
6828 | parent->scope_set = 1; |
6829 | return parent->scope; | |
6830 | } | |
6831 | ||
6832 | /* Return the fully scoped name associated with PDI, from compilation unit | |
6833 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 6834 | |
72bf9492 DJ |
6835 | static char * |
6836 | partial_die_full_name (struct partial_die_info *pdi, | |
6837 | struct dwarf2_cu *cu) | |
6838 | { | |
15d034d0 | 6839 | const char *parent_scope; |
72bf9492 | 6840 | |
98bfdba5 PA |
6841 | /* If this is a template instantiation, we can not work out the |
6842 | template arguments from partial DIEs. So, unfortunately, we have | |
6843 | to go through the full DIEs. At least any work we do building | |
6844 | types here will be reused if full symbols are loaded later. */ | |
6845 | if (pdi->has_template_arguments) | |
6846 | { | |
6847 | fixup_partial_die (pdi, cu); | |
6848 | ||
6849 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
6850 | { | |
6851 | struct die_info *die; | |
6852 | struct attribute attr; | |
6853 | struct dwarf2_cu *ref_cu = cu; | |
6854 | ||
b64f50a1 | 6855 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
6856 | attr.name = 0; |
6857 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 6858 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
6859 | die = follow_die_ref (NULL, &attr, &ref_cu); |
6860 | ||
6861 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
6862 | } | |
6863 | } | |
6864 | ||
72bf9492 DJ |
6865 | parent_scope = partial_die_parent_scope (pdi, cu); |
6866 | if (parent_scope == NULL) | |
6867 | return NULL; | |
6868 | else | |
f55ee35c | 6869 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
6870 | } |
6871 | ||
6872 | static void | |
72bf9492 | 6873 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 6874 | { |
e7c27a73 | 6875 | struct objfile *objfile = cu->objfile; |
3e29f34a | 6876 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 6877 | CORE_ADDR addr = 0; |
15d034d0 | 6878 | const char *actual_name = NULL; |
e142c38c | 6879 | CORE_ADDR baseaddr; |
15d034d0 | 6880 | char *built_actual_name; |
e142c38c DJ |
6881 | |
6882 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6883 | |
15d034d0 TT |
6884 | built_actual_name = partial_die_full_name (pdi, cu); |
6885 | if (built_actual_name != NULL) | |
6886 | actual_name = built_actual_name; | |
63d06c5c | 6887 | |
72bf9492 DJ |
6888 | if (actual_name == NULL) |
6889 | actual_name = pdi->name; | |
6890 | ||
c906108c SS |
6891 | switch (pdi->tag) |
6892 | { | |
6893 | case DW_TAG_subprogram: | |
3e29f34a | 6894 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 6895 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 6896 | { |
2cfa0c8d JB |
6897 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
6898 | of the global scope. But in Ada, we want to be able to access | |
6899 | nested procedures globally. So all Ada subprograms are stored | |
6900 | in the global scope. */ | |
3e29f34a MR |
6901 | /* prim_record_minimal_symbol (actual_name, addr, mst_text, |
6902 | objfile); */ | |
f47fb265 | 6903 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6904 | built_actual_name != NULL, |
f47fb265 MS |
6905 | VAR_DOMAIN, LOC_BLOCK, |
6906 | &objfile->global_psymbols, | |
3e29f34a | 6907 | 0, addr, cu->language, objfile); |
c906108c SS |
6908 | } |
6909 | else | |
6910 | { | |
3e29f34a MR |
6911 | /* prim_record_minimal_symbol (actual_name, addr, mst_file_text, |
6912 | objfile); */ | |
f47fb265 | 6913 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6914 | built_actual_name != NULL, |
f47fb265 MS |
6915 | VAR_DOMAIN, LOC_BLOCK, |
6916 | &objfile->static_psymbols, | |
3e29f34a | 6917 | 0, addr, cu->language, objfile); |
c906108c SS |
6918 | } |
6919 | break; | |
72929c62 JB |
6920 | case DW_TAG_constant: |
6921 | { | |
6922 | struct psymbol_allocation_list *list; | |
6923 | ||
6924 | if (pdi->is_external) | |
6925 | list = &objfile->global_psymbols; | |
6926 | else | |
6927 | list = &objfile->static_psymbols; | |
f47fb265 | 6928 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6929 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
f47fb265 | 6930 | list, 0, 0, cu->language, objfile); |
72929c62 JB |
6931 | } |
6932 | break; | |
c906108c | 6933 | case DW_TAG_variable: |
95554aad TT |
6934 | if (pdi->d.locdesc) |
6935 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 6936 | |
95554aad | 6937 | if (pdi->d.locdesc |
caac4577 JG |
6938 | && addr == 0 |
6939 | && !dwarf2_per_objfile->has_section_at_zero) | |
6940 | { | |
6941 | /* A global or static variable may also have been stripped | |
6942 | out by the linker if unused, in which case its address | |
6943 | will be nullified; do not add such variables into partial | |
6944 | symbol table then. */ | |
6945 | } | |
6946 | else if (pdi->is_external) | |
c906108c SS |
6947 | { |
6948 | /* Global Variable. | |
6949 | Don't enter into the minimal symbol tables as there is | |
6950 | a minimal symbol table entry from the ELF symbols already. | |
6951 | Enter into partial symbol table if it has a location | |
6952 | descriptor or a type. | |
6953 | If the location descriptor is missing, new_symbol will create | |
6954 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
6955 | be determined from the minimal symbol table whenever the variable | |
6956 | is referenced. | |
6957 | The address for the partial symbol table entry is not | |
6958 | used by GDB, but it comes in handy for debugging partial symbol | |
6959 | table building. */ | |
6960 | ||
95554aad | 6961 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 6962 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6963 | built_actual_name != NULL, |
f47fb265 MS |
6964 | VAR_DOMAIN, LOC_STATIC, |
6965 | &objfile->global_psymbols, | |
6966 | 0, addr + baseaddr, | |
6967 | cu->language, objfile); | |
c906108c SS |
6968 | } |
6969 | else | |
6970 | { | |
ff908ebf AW |
6971 | int has_loc = pdi->d.locdesc != NULL; |
6972 | ||
6973 | /* Static Variable. Skip symbols whose value we cannot know (those | |
6974 | without location descriptors or constant values). */ | |
6975 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 6976 | { |
15d034d0 | 6977 | xfree (built_actual_name); |
decbce07 MS |
6978 | return; |
6979 | } | |
ff908ebf | 6980 | |
f47fb265 | 6981 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 6982 | mst_file_data, objfile); */ |
f47fb265 | 6983 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6984 | built_actual_name != NULL, |
f47fb265 MS |
6985 | VAR_DOMAIN, LOC_STATIC, |
6986 | &objfile->static_psymbols, | |
ff908ebf AW |
6987 | 0, |
6988 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, | |
f47fb265 | 6989 | cu->language, objfile); |
c906108c SS |
6990 | } |
6991 | break; | |
6992 | case DW_TAG_typedef: | |
6993 | case DW_TAG_base_type: | |
a02abb62 | 6994 | case DW_TAG_subrange_type: |
38d518c9 | 6995 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6996 | built_actual_name != NULL, |
176620f1 | 6997 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 6998 | &objfile->static_psymbols, |
e142c38c | 6999 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 7000 | break; |
74921315 | 7001 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
7002 | case DW_TAG_namespace: |
7003 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 7004 | built_actual_name != NULL, |
72bf9492 DJ |
7005 | VAR_DOMAIN, LOC_TYPEDEF, |
7006 | &objfile->global_psymbols, | |
7007 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
7008 | break; | |
530e8392 KB |
7009 | case DW_TAG_module: |
7010 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
7011 | built_actual_name != NULL, | |
7012 | MODULE_DOMAIN, LOC_TYPEDEF, | |
7013 | &objfile->global_psymbols, | |
7014 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
7015 | break; | |
c906108c | 7016 | case DW_TAG_class_type: |
680b30c7 | 7017 | case DW_TAG_interface_type: |
c906108c SS |
7018 | case DW_TAG_structure_type: |
7019 | case DW_TAG_union_type: | |
7020 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
7021 | /* Skip external references. The DWARF standard says in the section |
7022 | about "Structure, Union, and Class Type Entries": "An incomplete | |
7023 | structure, union or class type is represented by a structure, | |
7024 | union or class entry that does not have a byte size attribute | |
7025 | and that has a DW_AT_declaration attribute." */ | |
7026 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 7027 | { |
15d034d0 | 7028 | xfree (built_actual_name); |
decbce07 MS |
7029 | return; |
7030 | } | |
fa4028e9 | 7031 | |
63d06c5c DC |
7032 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
7033 | static vs. global. */ | |
38d518c9 | 7034 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7035 | built_actual_name != NULL, |
176620f1 | 7036 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
7037 | (cu->language == language_cplus |
7038 | || cu->language == language_java) | |
63d06c5c DC |
7039 | ? &objfile->global_psymbols |
7040 | : &objfile->static_psymbols, | |
e142c38c | 7041 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 7042 | |
c906108c SS |
7043 | break; |
7044 | case DW_TAG_enumerator: | |
38d518c9 | 7045 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7046 | built_actual_name != NULL, |
176620f1 | 7047 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
7048 | (cu->language == language_cplus |
7049 | || cu->language == language_java) | |
f6fe98ef DJ |
7050 | ? &objfile->global_psymbols |
7051 | : &objfile->static_psymbols, | |
e142c38c | 7052 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
7053 | break; |
7054 | default: | |
7055 | break; | |
7056 | } | |
5c4e30ca | 7057 | |
15d034d0 | 7058 | xfree (built_actual_name); |
c906108c SS |
7059 | } |
7060 | ||
5c4e30ca DC |
7061 | /* Read a partial die corresponding to a namespace; also, add a symbol |
7062 | corresponding to that namespace to the symbol table. NAMESPACE is | |
7063 | the name of the enclosing namespace. */ | |
91c24f0a | 7064 | |
72bf9492 DJ |
7065 | static void |
7066 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 7067 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 7068 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 7069 | { |
72bf9492 | 7070 | /* Add a symbol for the namespace. */ |
e7c27a73 | 7071 | |
72bf9492 | 7072 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
7073 | |
7074 | /* Now scan partial symbols in that namespace. */ | |
7075 | ||
91c24f0a | 7076 | if (pdi->has_children) |
cdc07690 | 7077 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
7078 | } |
7079 | ||
5d7cb8df JK |
7080 | /* Read a partial die corresponding to a Fortran module. */ |
7081 | ||
7082 | static void | |
7083 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 7084 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 7085 | { |
530e8392 KB |
7086 | /* Add a symbol for the namespace. */ |
7087 | ||
7088 | add_partial_symbol (pdi, cu); | |
7089 | ||
f55ee35c | 7090 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
7091 | |
7092 | if (pdi->has_children) | |
cdc07690 | 7093 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
7094 | } |
7095 | ||
bc30ff58 JB |
7096 | /* Read a partial die corresponding to a subprogram and create a partial |
7097 | symbol for that subprogram. When the CU language allows it, this | |
7098 | routine also defines a partial symbol for each nested subprogram | |
cdc07690 | 7099 | that this subprogram contains. If SET_ADDRMAP is true, record the |
428fc5fc YQ |
7100 | covered ranges in the addrmap. Set *LOWPC and *HIGHPC to the lowest |
7101 | and highest PC values found in PDI. | |
6e70227d | 7102 | |
cdc07690 YQ |
7103 | PDI may also be a lexical block, in which case we simply search |
7104 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
7105 | Again, this is only performed when the CU language allows this |
7106 | type of definitions. */ | |
7107 | ||
7108 | static void | |
7109 | add_partial_subprogram (struct partial_die_info *pdi, | |
7110 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 7111 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 JB |
7112 | { |
7113 | if (pdi->tag == DW_TAG_subprogram) | |
7114 | { | |
7115 | if (pdi->has_pc_info) | |
7116 | { | |
7117 | if (pdi->lowpc < *lowpc) | |
7118 | *lowpc = pdi->lowpc; | |
7119 | if (pdi->highpc > *highpc) | |
7120 | *highpc = pdi->highpc; | |
cdc07690 | 7121 | if (set_addrmap) |
5734ee8b | 7122 | { |
5734ee8b | 7123 | struct objfile *objfile = cu->objfile; |
3e29f34a MR |
7124 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
7125 | CORE_ADDR baseaddr; | |
7126 | CORE_ADDR highpc; | |
7127 | CORE_ADDR lowpc; | |
5734ee8b DJ |
7128 | |
7129 | baseaddr = ANOFFSET (objfile->section_offsets, | |
7130 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
7131 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
7132 | pdi->lowpc + baseaddr); | |
7133 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
7134 | pdi->highpc + baseaddr); | |
7135 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 7136 | cu->per_cu->v.psymtab); |
5734ee8b | 7137 | } |
481860b3 GB |
7138 | } |
7139 | ||
7140 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
7141 | { | |
bc30ff58 | 7142 | if (!pdi->is_declaration) |
e8d05480 JB |
7143 | /* Ignore subprogram DIEs that do not have a name, they are |
7144 | illegal. Do not emit a complaint at this point, we will | |
7145 | do so when we convert this psymtab into a symtab. */ | |
7146 | if (pdi->name) | |
7147 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
7148 | } |
7149 | } | |
6e70227d | 7150 | |
bc30ff58 JB |
7151 | if (! pdi->has_children) |
7152 | return; | |
7153 | ||
7154 | if (cu->language == language_ada) | |
7155 | { | |
7156 | pdi = pdi->die_child; | |
7157 | while (pdi != NULL) | |
7158 | { | |
7159 | fixup_partial_die (pdi, cu); | |
7160 | if (pdi->tag == DW_TAG_subprogram | |
7161 | || pdi->tag == DW_TAG_lexical_block) | |
cdc07690 | 7162 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
7163 | pdi = pdi->die_sibling; |
7164 | } | |
7165 | } | |
7166 | } | |
7167 | ||
91c24f0a DC |
7168 | /* Read a partial die corresponding to an enumeration type. */ |
7169 | ||
72bf9492 DJ |
7170 | static void |
7171 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
7172 | struct dwarf2_cu *cu) | |
91c24f0a | 7173 | { |
72bf9492 | 7174 | struct partial_die_info *pdi; |
91c24f0a DC |
7175 | |
7176 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
7177 | add_partial_symbol (enum_pdi, cu); |
7178 | ||
7179 | pdi = enum_pdi->die_child; | |
7180 | while (pdi) | |
91c24f0a | 7181 | { |
72bf9492 | 7182 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 7183 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 7184 | else |
72bf9492 DJ |
7185 | add_partial_symbol (pdi, cu); |
7186 | pdi = pdi->die_sibling; | |
91c24f0a | 7187 | } |
91c24f0a DC |
7188 | } |
7189 | ||
6caca83c CC |
7190 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
7191 | ||
7192 | static unsigned int | |
d521ce57 | 7193 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
7194 | { |
7195 | unsigned int bytes_read; | |
7196 | ||
7197 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7198 | } | |
7199 | ||
4bb7a0a7 DJ |
7200 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
7201 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
7202 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
7203 | the initial number. */ | |
7204 | ||
7205 | static struct abbrev_info * | |
d521ce57 | 7206 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 7207 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
7208 | { |
7209 | bfd *abfd = cu->objfile->obfd; | |
7210 | unsigned int abbrev_number; | |
7211 | struct abbrev_info *abbrev; | |
7212 | ||
7213 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
7214 | ||
7215 | if (abbrev_number == 0) | |
7216 | return NULL; | |
7217 | ||
433df2d4 | 7218 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
7219 | if (!abbrev) |
7220 | { | |
422b9917 DE |
7221 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
7222 | " at offset 0x%x [in module %s]"), | |
7223 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", | |
7224 | cu->header.offset.sect_off, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
7225 | } |
7226 | ||
7227 | return abbrev; | |
7228 | } | |
7229 | ||
93311388 DE |
7230 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7231 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
7232 | DIE. Any children of the skipped DIEs will also be skipped. */ |
7233 | ||
d521ce57 TT |
7234 | static const gdb_byte * |
7235 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 7236 | { |
dee91e82 | 7237 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
7238 | struct abbrev_info *abbrev; |
7239 | unsigned int bytes_read; | |
7240 | ||
7241 | while (1) | |
7242 | { | |
7243 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
7244 | if (abbrev == NULL) | |
7245 | return info_ptr + bytes_read; | |
7246 | else | |
dee91e82 | 7247 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
7248 | } |
7249 | } | |
7250 | ||
93311388 DE |
7251 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7252 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
7253 | abbrev corresponding to that skipped uleb128 should be passed in |
7254 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
7255 | children. */ | |
7256 | ||
d521ce57 TT |
7257 | static const gdb_byte * |
7258 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 7259 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
7260 | { |
7261 | unsigned int bytes_read; | |
7262 | struct attribute attr; | |
dee91e82 DE |
7263 | bfd *abfd = reader->abfd; |
7264 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 7265 | const gdb_byte *buffer = reader->buffer; |
f664829e | 7266 | const gdb_byte *buffer_end = reader->buffer_end; |
d521ce57 | 7267 | const gdb_byte *start_info_ptr = info_ptr; |
4bb7a0a7 DJ |
7268 | unsigned int form, i; |
7269 | ||
7270 | for (i = 0; i < abbrev->num_attrs; i++) | |
7271 | { | |
7272 | /* The only abbrev we care about is DW_AT_sibling. */ | |
7273 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
7274 | { | |
dee91e82 | 7275 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 7276 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
7277 | complaint (&symfile_complaints, |
7278 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 7279 | else |
b9502d3f WN |
7280 | { |
7281 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
7282 | const gdb_byte *sibling_ptr = buffer + off; | |
7283 | ||
7284 | if (sibling_ptr < info_ptr) | |
7285 | complaint (&symfile_complaints, | |
7286 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
7287 | else if (sibling_ptr > reader->buffer_end) |
7288 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
7289 | else |
7290 | return sibling_ptr; | |
7291 | } | |
4bb7a0a7 DJ |
7292 | } |
7293 | ||
7294 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
7295 | form = abbrev->attrs[i].form; | |
7296 | skip_attribute: | |
7297 | switch (form) | |
7298 | { | |
4bb7a0a7 | 7299 | case DW_FORM_ref_addr: |
ae411497 TT |
7300 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
7301 | and later it is offset sized. */ | |
7302 | if (cu->header.version == 2) | |
7303 | info_ptr += cu->header.addr_size; | |
7304 | else | |
7305 | info_ptr += cu->header.offset_size; | |
7306 | break; | |
36586728 TT |
7307 | case DW_FORM_GNU_ref_alt: |
7308 | info_ptr += cu->header.offset_size; | |
7309 | break; | |
ae411497 | 7310 | case DW_FORM_addr: |
4bb7a0a7 DJ |
7311 | info_ptr += cu->header.addr_size; |
7312 | break; | |
7313 | case DW_FORM_data1: | |
7314 | case DW_FORM_ref1: | |
7315 | case DW_FORM_flag: | |
7316 | info_ptr += 1; | |
7317 | break; | |
2dc7f7b3 TT |
7318 | case DW_FORM_flag_present: |
7319 | break; | |
4bb7a0a7 DJ |
7320 | case DW_FORM_data2: |
7321 | case DW_FORM_ref2: | |
7322 | info_ptr += 2; | |
7323 | break; | |
7324 | case DW_FORM_data4: | |
7325 | case DW_FORM_ref4: | |
7326 | info_ptr += 4; | |
7327 | break; | |
7328 | case DW_FORM_data8: | |
7329 | case DW_FORM_ref8: | |
55f1336d | 7330 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
7331 | info_ptr += 8; |
7332 | break; | |
7333 | case DW_FORM_string: | |
9b1c24c8 | 7334 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
7335 | info_ptr += bytes_read; |
7336 | break; | |
2dc7f7b3 | 7337 | case DW_FORM_sec_offset: |
4bb7a0a7 | 7338 | case DW_FORM_strp: |
36586728 | 7339 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
7340 | info_ptr += cu->header.offset_size; |
7341 | break; | |
2dc7f7b3 | 7342 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
7343 | case DW_FORM_block: |
7344 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7345 | info_ptr += bytes_read; | |
7346 | break; | |
7347 | case DW_FORM_block1: | |
7348 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
7349 | break; | |
7350 | case DW_FORM_block2: | |
7351 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
7352 | break; | |
7353 | case DW_FORM_block4: | |
7354 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
7355 | break; | |
7356 | case DW_FORM_sdata: | |
7357 | case DW_FORM_udata: | |
7358 | case DW_FORM_ref_udata: | |
3019eac3 DE |
7359 | case DW_FORM_GNU_addr_index: |
7360 | case DW_FORM_GNU_str_index: | |
d521ce57 | 7361 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
7362 | break; |
7363 | case DW_FORM_indirect: | |
7364 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7365 | info_ptr += bytes_read; | |
7366 | /* We need to continue parsing from here, so just go back to | |
7367 | the top. */ | |
7368 | goto skip_attribute; | |
7369 | ||
7370 | default: | |
3e43a32a MS |
7371 | error (_("Dwarf Error: Cannot handle %s " |
7372 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
7373 | dwarf_form_name (form), |
7374 | bfd_get_filename (abfd)); | |
7375 | } | |
7376 | } | |
7377 | ||
7378 | if (abbrev->has_children) | |
dee91e82 | 7379 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
7380 | else |
7381 | return info_ptr; | |
7382 | } | |
7383 | ||
93311388 | 7384 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 7385 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 7386 | |
d521ce57 | 7387 | static const gdb_byte * |
dee91e82 DE |
7388 | locate_pdi_sibling (const struct die_reader_specs *reader, |
7389 | struct partial_die_info *orig_pdi, | |
d521ce57 | 7390 | const gdb_byte *info_ptr) |
91c24f0a DC |
7391 | { |
7392 | /* Do we know the sibling already? */ | |
72bf9492 | 7393 | |
91c24f0a DC |
7394 | if (orig_pdi->sibling) |
7395 | return orig_pdi->sibling; | |
7396 | ||
7397 | /* Are there any children to deal with? */ | |
7398 | ||
7399 | if (!orig_pdi->has_children) | |
7400 | return info_ptr; | |
7401 | ||
4bb7a0a7 | 7402 | /* Skip the children the long way. */ |
91c24f0a | 7403 | |
dee91e82 | 7404 | return skip_children (reader, info_ptr); |
91c24f0a DC |
7405 | } |
7406 | ||
257e7a09 | 7407 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 7408 | not NULL. */ |
c906108c SS |
7409 | |
7410 | static void | |
257e7a09 YQ |
7411 | dwarf2_read_symtab (struct partial_symtab *self, |
7412 | struct objfile *objfile) | |
c906108c | 7413 | { |
257e7a09 | 7414 | if (self->readin) |
c906108c | 7415 | { |
442e4d9c | 7416 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 7417 | self->filename); |
442e4d9c YQ |
7418 | } |
7419 | else | |
7420 | { | |
7421 | if (info_verbose) | |
c906108c | 7422 | { |
442e4d9c | 7423 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 7424 | self->filename); |
442e4d9c | 7425 | gdb_flush (gdb_stdout); |
c906108c | 7426 | } |
c906108c | 7427 | |
442e4d9c YQ |
7428 | /* Restore our global data. */ |
7429 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10b3939b | 7430 | |
442e4d9c YQ |
7431 | /* If this psymtab is constructed from a debug-only objfile, the |
7432 | has_section_at_zero flag will not necessarily be correct. We | |
7433 | can get the correct value for this flag by looking at the data | |
7434 | associated with the (presumably stripped) associated objfile. */ | |
7435 | if (objfile->separate_debug_objfile_backlink) | |
7436 | { | |
7437 | struct dwarf2_per_objfile *dpo_backlink | |
7438 | = objfile_data (objfile->separate_debug_objfile_backlink, | |
7439 | dwarf2_objfile_data_key); | |
9a619af0 | 7440 | |
442e4d9c YQ |
7441 | dwarf2_per_objfile->has_section_at_zero |
7442 | = dpo_backlink->has_section_at_zero; | |
7443 | } | |
b2ab525c | 7444 | |
442e4d9c | 7445 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 7446 | |
257e7a09 | 7447 | psymtab_to_symtab_1 (self); |
c906108c | 7448 | |
442e4d9c YQ |
7449 | /* Finish up the debug error message. */ |
7450 | if (info_verbose) | |
7451 | printf_filtered (_("done.\n")); | |
c906108c | 7452 | } |
95554aad TT |
7453 | |
7454 | process_cu_includes (); | |
c906108c | 7455 | } |
9cdd5dbd DE |
7456 | \f |
7457 | /* Reading in full CUs. */ | |
c906108c | 7458 | |
10b3939b DJ |
7459 | /* Add PER_CU to the queue. */ |
7460 | ||
7461 | static void | |
95554aad TT |
7462 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7463 | enum language pretend_language) | |
10b3939b DJ |
7464 | { |
7465 | struct dwarf2_queue_item *item; | |
7466 | ||
7467 | per_cu->queued = 1; | |
7468 | item = xmalloc (sizeof (*item)); | |
7469 | item->per_cu = per_cu; | |
95554aad | 7470 | item->pretend_language = pretend_language; |
10b3939b DJ |
7471 | item->next = NULL; |
7472 | ||
7473 | if (dwarf2_queue == NULL) | |
7474 | dwarf2_queue = item; | |
7475 | else | |
7476 | dwarf2_queue_tail->next = item; | |
7477 | ||
7478 | dwarf2_queue_tail = item; | |
7479 | } | |
7480 | ||
89e63ee4 DE |
7481 | /* If PER_CU is not yet queued, add it to the queue. |
7482 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
7483 | dependency. | |
0907af0c | 7484 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
7485 | meaning either PER_CU is already queued or it is already loaded. |
7486 | ||
7487 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
7488 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
7489 | |
7490 | static int | |
89e63ee4 | 7491 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
7492 | struct dwarf2_per_cu_data *per_cu, |
7493 | enum language pretend_language) | |
7494 | { | |
7495 | /* We may arrive here during partial symbol reading, if we need full | |
7496 | DIEs to process an unusual case (e.g. template arguments). Do | |
7497 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
7498 | if (dwarf2_per_objfile->reading_partial_symbols) | |
7499 | { | |
7500 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
7501 | return 1; | |
7502 | return 0; | |
7503 | } | |
7504 | ||
7505 | /* Mark the dependence relation so that we don't flush PER_CU | |
7506 | too early. */ | |
89e63ee4 DE |
7507 | if (dependent_cu != NULL) |
7508 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
7509 | |
7510 | /* If it's already on the queue, we have nothing to do. */ | |
7511 | if (per_cu->queued) | |
7512 | return 0; | |
7513 | ||
7514 | /* If the compilation unit is already loaded, just mark it as | |
7515 | used. */ | |
7516 | if (per_cu->cu != NULL) | |
7517 | { | |
7518 | per_cu->cu->last_used = 0; | |
7519 | return 0; | |
7520 | } | |
7521 | ||
7522 | /* Add it to the queue. */ | |
7523 | queue_comp_unit (per_cu, pretend_language); | |
7524 | ||
7525 | return 1; | |
7526 | } | |
7527 | ||
10b3939b DJ |
7528 | /* Process the queue. */ |
7529 | ||
7530 | static void | |
a0f42c21 | 7531 | process_queue (void) |
10b3939b DJ |
7532 | { |
7533 | struct dwarf2_queue_item *item, *next_item; | |
7534 | ||
b4f54984 | 7535 | if (dwarf_read_debug) |
45cfd468 DE |
7536 | { |
7537 | fprintf_unfiltered (gdb_stdlog, | |
7538 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 7539 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
7540 | } |
7541 | ||
03dd20cc DJ |
7542 | /* The queue starts out with one item, but following a DIE reference |
7543 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
7544 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
7545 | { | |
9291a0cd | 7546 | if (dwarf2_per_objfile->using_index |
43f3e411 | 7547 | ? !item->per_cu->v.quick->compunit_symtab |
9291a0cd | 7548 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) |
f4dc4d17 DE |
7549 | { |
7550 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 7551 | unsigned int debug_print_threshold; |
247f5c4f | 7552 | char buf[100]; |
f4dc4d17 | 7553 | |
247f5c4f | 7554 | if (per_cu->is_debug_types) |
f4dc4d17 | 7555 | { |
247f5c4f DE |
7556 | struct signatured_type *sig_type = |
7557 | (struct signatured_type *) per_cu; | |
7558 | ||
7559 | sprintf (buf, "TU %s at offset 0x%x", | |
73be47f5 DE |
7560 | hex_string (sig_type->signature), |
7561 | per_cu->offset.sect_off); | |
7562 | /* There can be 100s of TUs. | |
7563 | Only print them in verbose mode. */ | |
7564 | debug_print_threshold = 2; | |
f4dc4d17 | 7565 | } |
247f5c4f | 7566 | else |
73be47f5 DE |
7567 | { |
7568 | sprintf (buf, "CU at offset 0x%x", per_cu->offset.sect_off); | |
7569 | debug_print_threshold = 1; | |
7570 | } | |
247f5c4f | 7571 | |
b4f54984 | 7572 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 7573 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
7574 | |
7575 | if (per_cu->is_debug_types) | |
7576 | process_full_type_unit (per_cu, item->pretend_language); | |
7577 | else | |
7578 | process_full_comp_unit (per_cu, item->pretend_language); | |
7579 | ||
b4f54984 | 7580 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 7581 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 7582 | } |
10b3939b DJ |
7583 | |
7584 | item->per_cu->queued = 0; | |
7585 | next_item = item->next; | |
7586 | xfree (item); | |
7587 | } | |
7588 | ||
7589 | dwarf2_queue_tail = NULL; | |
45cfd468 | 7590 | |
b4f54984 | 7591 | if (dwarf_read_debug) |
45cfd468 DE |
7592 | { |
7593 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 7594 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 7595 | } |
10b3939b DJ |
7596 | } |
7597 | ||
7598 | /* Free all allocated queue entries. This function only releases anything if | |
7599 | an error was thrown; if the queue was processed then it would have been | |
7600 | freed as we went along. */ | |
7601 | ||
7602 | static void | |
7603 | dwarf2_release_queue (void *dummy) | |
7604 | { | |
7605 | struct dwarf2_queue_item *item, *last; | |
7606 | ||
7607 | item = dwarf2_queue; | |
7608 | while (item) | |
7609 | { | |
7610 | /* Anything still marked queued is likely to be in an | |
7611 | inconsistent state, so discard it. */ | |
7612 | if (item->per_cu->queued) | |
7613 | { | |
7614 | if (item->per_cu->cu != NULL) | |
dee91e82 | 7615 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
7616 | item->per_cu->queued = 0; |
7617 | } | |
7618 | ||
7619 | last = item; | |
7620 | item = item->next; | |
7621 | xfree (last); | |
7622 | } | |
7623 | ||
7624 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
7625 | } | |
7626 | ||
7627 | /* Read in full symbols for PST, and anything it depends on. */ | |
7628 | ||
c906108c | 7629 | static void |
fba45db2 | 7630 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 7631 | { |
10b3939b | 7632 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
7633 | int i; |
7634 | ||
95554aad TT |
7635 | if (pst->readin) |
7636 | return; | |
7637 | ||
aaa75496 | 7638 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
7639 | if (!pst->dependencies[i]->readin |
7640 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
7641 | { |
7642 | /* Inform about additional files that need to be read in. */ | |
7643 | if (info_verbose) | |
7644 | { | |
a3f17187 | 7645 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
7646 | fputs_filtered (" ", gdb_stdout); |
7647 | wrap_here (""); | |
7648 | fputs_filtered ("and ", gdb_stdout); | |
7649 | wrap_here (""); | |
7650 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 7651 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
7652 | gdb_flush (gdb_stdout); |
7653 | } | |
7654 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
7655 | } | |
7656 | ||
e38df1d0 | 7657 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
7658 | |
7659 | if (per_cu == NULL) | |
aaa75496 JB |
7660 | { |
7661 | /* It's an include file, no symbols to read for it. | |
7662 | Everything is in the parent symtab. */ | |
7663 | pst->readin = 1; | |
7664 | return; | |
7665 | } | |
c906108c | 7666 | |
a0f42c21 | 7667 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
7668 | } |
7669 | ||
dee91e82 DE |
7670 | /* Trivial hash function for die_info: the hash value of a DIE |
7671 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 7672 | |
dee91e82 DE |
7673 | static hashval_t |
7674 | die_hash (const void *item) | |
10b3939b | 7675 | { |
dee91e82 | 7676 | const struct die_info *die = item; |
6502dd73 | 7677 | |
dee91e82 DE |
7678 | return die->offset.sect_off; |
7679 | } | |
63d06c5c | 7680 | |
dee91e82 DE |
7681 | /* Trivial comparison function for die_info structures: two DIEs |
7682 | are equal if they have the same offset. */ | |
98bfdba5 | 7683 | |
dee91e82 DE |
7684 | static int |
7685 | die_eq (const void *item_lhs, const void *item_rhs) | |
7686 | { | |
7687 | const struct die_info *die_lhs = item_lhs; | |
7688 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 7689 | |
dee91e82 DE |
7690 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
7691 | } | |
c906108c | 7692 | |
dee91e82 DE |
7693 | /* die_reader_func for load_full_comp_unit. |
7694 | This is identical to read_signatured_type_reader, | |
7695 | but is kept separate for now. */ | |
c906108c | 7696 | |
dee91e82 DE |
7697 | static void |
7698 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7699 | const gdb_byte *info_ptr, |
dee91e82 DE |
7700 | struct die_info *comp_unit_die, |
7701 | int has_children, | |
7702 | void *data) | |
7703 | { | |
7704 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 7705 | enum language *language_ptr = data; |
6caca83c | 7706 | |
dee91e82 DE |
7707 | gdb_assert (cu->die_hash == NULL); |
7708 | cu->die_hash = | |
7709 | htab_create_alloc_ex (cu->header.length / 12, | |
7710 | die_hash, | |
7711 | die_eq, | |
7712 | NULL, | |
7713 | &cu->comp_unit_obstack, | |
7714 | hashtab_obstack_allocate, | |
7715 | dummy_obstack_deallocate); | |
e142c38c | 7716 | |
dee91e82 DE |
7717 | if (has_children) |
7718 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
7719 | &info_ptr, comp_unit_die); | |
7720 | cu->dies = comp_unit_die; | |
7721 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
7722 | |
7723 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 7724 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 7725 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
7726 | or we won't be able to build types correctly. |
7727 | Similarly, if we do not read the producer, we can not apply | |
7728 | producer-specific interpretation. */ | |
95554aad | 7729 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 7730 | } |
10b3939b | 7731 | |
dee91e82 | 7732 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 7733 | |
dee91e82 | 7734 | static void |
95554aad TT |
7735 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
7736 | enum language pretend_language) | |
dee91e82 | 7737 | { |
3019eac3 | 7738 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 7739 | |
f4dc4d17 DE |
7740 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
7741 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
7742 | } |
7743 | ||
3da10d80 KS |
7744 | /* Add a DIE to the delayed physname list. */ |
7745 | ||
7746 | static void | |
7747 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
7748 | const char *name, struct die_info *die, | |
7749 | struct dwarf2_cu *cu) | |
7750 | { | |
7751 | struct delayed_method_info mi; | |
7752 | mi.type = type; | |
7753 | mi.fnfield_index = fnfield_index; | |
7754 | mi.index = index; | |
7755 | mi.name = name; | |
7756 | mi.die = die; | |
7757 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
7758 | } | |
7759 | ||
7760 | /* A cleanup for freeing the delayed method list. */ | |
7761 | ||
7762 | static void | |
7763 | free_delayed_list (void *ptr) | |
7764 | { | |
7765 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
7766 | if (cu->method_list != NULL) | |
7767 | { | |
7768 | VEC_free (delayed_method_info, cu->method_list); | |
7769 | cu->method_list = NULL; | |
7770 | } | |
7771 | } | |
7772 | ||
7773 | /* Compute the physnames of any methods on the CU's method list. | |
7774 | ||
7775 | The computation of method physnames is delayed in order to avoid the | |
7776 | (bad) condition that one of the method's formal parameters is of an as yet | |
7777 | incomplete type. */ | |
7778 | ||
7779 | static void | |
7780 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
7781 | { | |
7782 | int i; | |
7783 | struct delayed_method_info *mi; | |
7784 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
7785 | { | |
1d06ead6 | 7786 | const char *physname; |
3da10d80 KS |
7787 | struct fn_fieldlist *fn_flp |
7788 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 7789 | physname = dwarf2_physname (mi->name, mi->die, cu); |
005e54bb DE |
7790 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi->index) |
7791 | = physname ? physname : ""; | |
3da10d80 KS |
7792 | } |
7793 | } | |
7794 | ||
a766d390 DE |
7795 | /* Go objects should be embedded in a DW_TAG_module DIE, |
7796 | and it's not clear if/how imported objects will appear. | |
7797 | To keep Go support simple until that's worked out, | |
7798 | go back through what we've read and create something usable. | |
7799 | We could do this while processing each DIE, and feels kinda cleaner, | |
7800 | but that way is more invasive. | |
7801 | This is to, for example, allow the user to type "p var" or "b main" | |
7802 | without having to specify the package name, and allow lookups | |
7803 | of module.object to work in contexts that use the expression | |
7804 | parser. */ | |
7805 | ||
7806 | static void | |
7807 | fixup_go_packaging (struct dwarf2_cu *cu) | |
7808 | { | |
7809 | char *package_name = NULL; | |
7810 | struct pending *list; | |
7811 | int i; | |
7812 | ||
7813 | for (list = global_symbols; list != NULL; list = list->next) | |
7814 | { | |
7815 | for (i = 0; i < list->nsyms; ++i) | |
7816 | { | |
7817 | struct symbol *sym = list->symbol[i]; | |
7818 | ||
7819 | if (SYMBOL_LANGUAGE (sym) == language_go | |
7820 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
7821 | { | |
7822 | char *this_package_name = go_symbol_package_name (sym); | |
7823 | ||
7824 | if (this_package_name == NULL) | |
7825 | continue; | |
7826 | if (package_name == NULL) | |
7827 | package_name = this_package_name; | |
7828 | else | |
7829 | { | |
7830 | if (strcmp (package_name, this_package_name) != 0) | |
7831 | complaint (&symfile_complaints, | |
7832 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
7833 | (symbol_symtab (sym) != NULL |
7834 | ? symtab_to_filename_for_display | |
7835 | (symbol_symtab (sym)) | |
4262abfb | 7836 | : objfile_name (cu->objfile)), |
a766d390 DE |
7837 | this_package_name, package_name); |
7838 | xfree (this_package_name); | |
7839 | } | |
7840 | } | |
7841 | } | |
7842 | } | |
7843 | ||
7844 | if (package_name != NULL) | |
7845 | { | |
7846 | struct objfile *objfile = cu->objfile; | |
34a68019 TT |
7847 | const char *saved_package_name |
7848 | = obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
7849 | package_name, | |
7850 | strlen (package_name)); | |
a766d390 | 7851 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, |
86f62fd7 | 7852 | saved_package_name, objfile); |
a766d390 DE |
7853 | struct symbol *sym; |
7854 | ||
7855 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7856 | ||
e623cf5d | 7857 | sym = allocate_symbol (objfile); |
f85f34ed | 7858 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
7859 | SYMBOL_SET_NAMES (sym, saved_package_name, |
7860 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
7861 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
7862 | e.g., "main" finds the "main" module and not C's main(). */ | |
7863 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 7864 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
7865 | SYMBOL_TYPE (sym) = type; |
7866 | ||
7867 | add_symbol_to_list (sym, &global_symbols); | |
7868 | ||
7869 | xfree (package_name); | |
7870 | } | |
7871 | } | |
7872 | ||
95554aad TT |
7873 | /* Return the symtab for PER_CU. This works properly regardless of |
7874 | whether we're using the index or psymtabs. */ | |
7875 | ||
43f3e411 DE |
7876 | static struct compunit_symtab * |
7877 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad TT |
7878 | { |
7879 | return (dwarf2_per_objfile->using_index | |
43f3e411 DE |
7880 | ? per_cu->v.quick->compunit_symtab |
7881 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
7882 | } |
7883 | ||
7884 | /* A helper function for computing the list of all symbol tables | |
7885 | included by PER_CU. */ | |
7886 | ||
7887 | static void | |
43f3e411 | 7888 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 7889 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 7890 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 7891 | struct compunit_symtab *immediate_parent) |
95554aad TT |
7892 | { |
7893 | void **slot; | |
7894 | int ix; | |
43f3e411 | 7895 | struct compunit_symtab *cust; |
95554aad TT |
7896 | struct dwarf2_per_cu_data *iter; |
7897 | ||
7898 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
7899 | if (*slot != NULL) | |
7900 | { | |
7901 | /* This inclusion and its children have been processed. */ | |
7902 | return; | |
7903 | } | |
7904 | ||
7905 | *slot = per_cu; | |
7906 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
7907 | cust = get_compunit_symtab (per_cu); |
7908 | if (cust != NULL) | |
ec94af83 DE |
7909 | { |
7910 | /* If this is a type unit only add its symbol table if we haven't | |
7911 | seen it yet (type unit per_cu's can share symtabs). */ | |
7912 | if (per_cu->is_debug_types) | |
7913 | { | |
43f3e411 | 7914 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
7915 | if (*slot == NULL) |
7916 | { | |
43f3e411 DE |
7917 | *slot = cust; |
7918 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
7919 | if (cust->user == NULL) | |
7920 | cust->user = immediate_parent; | |
ec94af83 DE |
7921 | } |
7922 | } | |
7923 | else | |
f9125b6c | 7924 | { |
43f3e411 DE |
7925 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
7926 | if (cust->user == NULL) | |
7927 | cust->user = immediate_parent; | |
f9125b6c | 7928 | } |
ec94af83 | 7929 | } |
95554aad TT |
7930 | |
7931 | for (ix = 0; | |
796a7ff8 | 7932 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 7933 | ++ix) |
ec94af83 DE |
7934 | { |
7935 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 7936 | all_type_symtabs, iter, cust); |
ec94af83 | 7937 | } |
95554aad TT |
7938 | } |
7939 | ||
43f3e411 | 7940 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
7941 | PER_CU. */ |
7942 | ||
7943 | static void | |
43f3e411 | 7944 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 7945 | { |
f4dc4d17 DE |
7946 | gdb_assert (! per_cu->is_debug_types); |
7947 | ||
796a7ff8 | 7948 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
7949 | { |
7950 | int ix, len; | |
ec94af83 | 7951 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
7952 | struct compunit_symtab *compunit_symtab_iter; |
7953 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 7954 | htab_t all_children, all_type_symtabs; |
43f3e411 | 7955 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
7956 | |
7957 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 7958 | if (cust == NULL) |
95554aad TT |
7959 | return; |
7960 | ||
7961 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
7962 | NULL, xcalloc, xfree); | |
ec94af83 DE |
7963 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
7964 | NULL, xcalloc, xfree); | |
95554aad TT |
7965 | |
7966 | for (ix = 0; | |
796a7ff8 | 7967 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 7968 | ix, per_cu_iter); |
95554aad | 7969 | ++ix) |
ec94af83 DE |
7970 | { |
7971 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 7972 | all_type_symtabs, per_cu_iter, |
43f3e411 | 7973 | cust); |
ec94af83 | 7974 | } |
95554aad | 7975 | |
ec94af83 | 7976 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
7977 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
7978 | cust->includes | |
95554aad TT |
7979 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, |
7980 | (len + 1) * sizeof (struct symtab *)); | |
7981 | for (ix = 0; | |
43f3e411 DE |
7982 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
7983 | compunit_symtab_iter); | |
95554aad | 7984 | ++ix) |
43f3e411 DE |
7985 | cust->includes[ix] = compunit_symtab_iter; |
7986 | cust->includes[len] = NULL; | |
95554aad | 7987 | |
43f3e411 | 7988 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 7989 | htab_delete (all_children); |
ec94af83 | 7990 | htab_delete (all_type_symtabs); |
95554aad TT |
7991 | } |
7992 | } | |
7993 | ||
7994 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
7995 | read. */ | |
7996 | ||
7997 | static void | |
7998 | process_cu_includes (void) | |
7999 | { | |
8000 | int ix; | |
8001 | struct dwarf2_per_cu_data *iter; | |
8002 | ||
8003 | for (ix = 0; | |
8004 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
8005 | ix, iter); | |
8006 | ++ix) | |
f4dc4d17 DE |
8007 | { |
8008 | if (! iter->is_debug_types) | |
43f3e411 | 8009 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 8010 | } |
95554aad TT |
8011 | |
8012 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
8013 | } | |
8014 | ||
9cdd5dbd | 8015 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
8016 | already been loaded into memory. */ |
8017 | ||
8018 | static void | |
95554aad TT |
8019 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8020 | enum language pretend_language) | |
10b3939b | 8021 | { |
10b3939b | 8022 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 8023 | struct objfile *objfile = per_cu->objfile; |
3e29f34a | 8024 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 8025 | CORE_ADDR lowpc, highpc; |
43f3e411 | 8026 | struct compunit_symtab *cust; |
3da10d80 | 8027 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 8028 | CORE_ADDR baseaddr; |
4359dff1 | 8029 | struct block *static_block; |
3e29f34a | 8030 | CORE_ADDR addr; |
10b3939b DJ |
8031 | |
8032 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8033 | ||
10b3939b DJ |
8034 | buildsym_init (); |
8035 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 8036 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
8037 | |
8038 | cu->list_in_scope = &file_symbols; | |
c906108c | 8039 | |
95554aad TT |
8040 | cu->language = pretend_language; |
8041 | cu->language_defn = language_def (cu->language); | |
8042 | ||
c906108c | 8043 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 8044 | process_die (cu->dies, cu); |
c906108c | 8045 | |
a766d390 DE |
8046 | /* For now fudge the Go package. */ |
8047 | if (cu->language == language_go) | |
8048 | fixup_go_packaging (cu); | |
8049 | ||
3da10d80 KS |
8050 | /* Now that we have processed all the DIEs in the CU, all the types |
8051 | should be complete, and it should now be safe to compute all of the | |
8052 | physnames. */ | |
8053 | compute_delayed_physnames (cu); | |
8054 | do_cleanups (delayed_list_cleanup); | |
8055 | ||
fae299cd DC |
8056 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
8057 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
8058 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 8059 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 8060 | |
3e29f34a MR |
8061 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
8062 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
8063 | |
8064 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
8065 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
8066 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
8067 | addrmap to help ensure it has an accurate map of pc values belonging to | |
8068 | this comp unit. */ | |
8069 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
8070 | ||
43f3e411 DE |
8071 | cust = end_symtab_from_static_block (static_block, |
8072 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 8073 | |
43f3e411 | 8074 | if (cust != NULL) |
c906108c | 8075 | { |
df15bd07 | 8076 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 8077 | |
8be455d7 JK |
8078 | /* Set symtab language to language from DW_AT_language. If the |
8079 | compilation is from a C file generated by language preprocessors, do | |
8080 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 DE |
8081 | if (!(cu->language == language_c |
8082 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
8083 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
8be455d7 JK |
8084 | |
8085 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
8086 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
8087 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
8088 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
8089 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
8090 | |
8091 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
8092 | needed, it would be wrong due to missing DW_AT_producer there. | |
8093 | ||
8094 | Still one can confuse GDB by using non-standard GCC compilation | |
8095 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
8096 | */ | |
ab260dad | 8097 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 8098 | cust->locations_valid = 1; |
e0d00bc7 JK |
8099 | |
8100 | if (gcc_4_minor >= 5) | |
43f3e411 | 8101 | cust->epilogue_unwind_valid = 1; |
96408a79 | 8102 | |
43f3e411 | 8103 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 8104 | } |
9291a0cd TT |
8105 | |
8106 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8107 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
8108 | else |
8109 | { | |
8110 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8111 | pst->compunit_symtab = cust; |
9291a0cd TT |
8112 | pst->readin = 1; |
8113 | } | |
c906108c | 8114 | |
95554aad TT |
8115 | /* Push it for inclusion processing later. */ |
8116 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
8117 | ||
c906108c | 8118 | do_cleanups (back_to); |
f4dc4d17 | 8119 | } |
45cfd468 | 8120 | |
f4dc4d17 DE |
8121 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
8122 | already been loaded into memory. */ | |
8123 | ||
8124 | static void | |
8125 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
8126 | enum language pretend_language) | |
8127 | { | |
8128 | struct dwarf2_cu *cu = per_cu->cu; | |
8129 | struct objfile *objfile = per_cu->objfile; | |
43f3e411 | 8130 | struct compunit_symtab *cust; |
f4dc4d17 | 8131 | struct cleanup *back_to, *delayed_list_cleanup; |
0186c6a7 DE |
8132 | struct signatured_type *sig_type; |
8133 | ||
8134 | gdb_assert (per_cu->is_debug_types); | |
8135 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8136 | |
8137 | buildsym_init (); | |
8138 | back_to = make_cleanup (really_free_pendings, NULL); | |
8139 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
8140 | ||
8141 | cu->list_in_scope = &file_symbols; | |
8142 | ||
8143 | cu->language = pretend_language; | |
8144 | cu->language_defn = language_def (cu->language); | |
8145 | ||
8146 | /* The symbol tables are set up in read_type_unit_scope. */ | |
8147 | process_die (cu->dies, cu); | |
8148 | ||
8149 | /* For now fudge the Go package. */ | |
8150 | if (cu->language == language_go) | |
8151 | fixup_go_packaging (cu); | |
8152 | ||
8153 | /* Now that we have processed all the DIEs in the CU, all the types | |
8154 | should be complete, and it should now be safe to compute all of the | |
8155 | physnames. */ | |
8156 | compute_delayed_physnames (cu); | |
8157 | do_cleanups (delayed_list_cleanup); | |
8158 | ||
8159 | /* TUs share symbol tables. | |
8160 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
8161 | of it with end_expandable_symtab. Otherwise, complete the addition of |
8162 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 8163 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 8164 | { |
43f3e411 DE |
8165 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
8166 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 8167 | |
43f3e411 | 8168 | if (cust != NULL) |
f4dc4d17 DE |
8169 | { |
8170 | /* Set symtab language to language from DW_AT_language. If the | |
8171 | compilation is from a C file generated by language preprocessors, | |
8172 | do not set the language if it was already deduced by | |
8173 | start_subfile. */ | |
43f3e411 DE |
8174 | if (!(cu->language == language_c |
8175 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
8176 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
8177 | } |
8178 | } | |
8179 | else | |
8180 | { | |
0ab9ce85 | 8181 | augment_type_symtab (); |
43f3e411 | 8182 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
8183 | } |
8184 | ||
8185 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8186 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
8187 | else |
8188 | { | |
8189 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8190 | pst->compunit_symtab = cust; |
f4dc4d17 | 8191 | pst->readin = 1; |
45cfd468 | 8192 | } |
f4dc4d17 DE |
8193 | |
8194 | do_cleanups (back_to); | |
c906108c SS |
8195 | } |
8196 | ||
95554aad TT |
8197 | /* Process an imported unit DIE. */ |
8198 | ||
8199 | static void | |
8200 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
8201 | { | |
8202 | struct attribute *attr; | |
8203 | ||
f4dc4d17 DE |
8204 | /* For now we don't handle imported units in type units. */ |
8205 | if (cu->per_cu->is_debug_types) | |
8206 | { | |
8207 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8208 | " supported in type units [in module %s]"), | |
4262abfb | 8209 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
8210 | } |
8211 | ||
95554aad TT |
8212 | attr = dwarf2_attr (die, DW_AT_import, cu); |
8213 | if (attr != NULL) | |
8214 | { | |
8215 | struct dwarf2_per_cu_data *per_cu; | |
8216 | struct symtab *imported_symtab; | |
8217 | sect_offset offset; | |
36586728 | 8218 | int is_dwz; |
95554aad TT |
8219 | |
8220 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
8221 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
8222 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad | 8223 | |
69d751e3 | 8224 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
8225 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
8226 | load_full_comp_unit (per_cu, cu->language); | |
8227 | ||
796a7ff8 | 8228 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
8229 | per_cu); |
8230 | } | |
8231 | } | |
8232 | ||
adde2bff DE |
8233 | /* Reset the in_process bit of a die. */ |
8234 | ||
8235 | static void | |
8236 | reset_die_in_process (void *arg) | |
8237 | { | |
8238 | struct die_info *die = arg; | |
8c3cb9fa | 8239 | |
adde2bff DE |
8240 | die->in_process = 0; |
8241 | } | |
8242 | ||
c906108c SS |
8243 | /* Process a die and its children. */ |
8244 | ||
8245 | static void | |
e7c27a73 | 8246 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8247 | { |
adde2bff DE |
8248 | struct cleanup *in_process; |
8249 | ||
8250 | /* We should only be processing those not already in process. */ | |
8251 | gdb_assert (!die->in_process); | |
8252 | ||
8253 | die->in_process = 1; | |
8254 | in_process = make_cleanup (reset_die_in_process,die); | |
8255 | ||
c906108c SS |
8256 | switch (die->tag) |
8257 | { | |
8258 | case DW_TAG_padding: | |
8259 | break; | |
8260 | case DW_TAG_compile_unit: | |
95554aad | 8261 | case DW_TAG_partial_unit: |
e7c27a73 | 8262 | read_file_scope (die, cu); |
c906108c | 8263 | break; |
348e048f DE |
8264 | case DW_TAG_type_unit: |
8265 | read_type_unit_scope (die, cu); | |
8266 | break; | |
c906108c | 8267 | case DW_TAG_subprogram: |
c906108c | 8268 | case DW_TAG_inlined_subroutine: |
edb3359d | 8269 | read_func_scope (die, cu); |
c906108c SS |
8270 | break; |
8271 | case DW_TAG_lexical_block: | |
14898363 L |
8272 | case DW_TAG_try_block: |
8273 | case DW_TAG_catch_block: | |
e7c27a73 | 8274 | read_lexical_block_scope (die, cu); |
c906108c | 8275 | break; |
96408a79 SA |
8276 | case DW_TAG_GNU_call_site: |
8277 | read_call_site_scope (die, cu); | |
8278 | break; | |
c906108c | 8279 | case DW_TAG_class_type: |
680b30c7 | 8280 | case DW_TAG_interface_type: |
c906108c SS |
8281 | case DW_TAG_structure_type: |
8282 | case DW_TAG_union_type: | |
134d01f1 | 8283 | process_structure_scope (die, cu); |
c906108c SS |
8284 | break; |
8285 | case DW_TAG_enumeration_type: | |
134d01f1 | 8286 | process_enumeration_scope (die, cu); |
c906108c | 8287 | break; |
134d01f1 | 8288 | |
f792889a DJ |
8289 | /* These dies have a type, but processing them does not create |
8290 | a symbol or recurse to process the children. Therefore we can | |
8291 | read them on-demand through read_type_die. */ | |
c906108c | 8292 | case DW_TAG_subroutine_type: |
72019c9c | 8293 | case DW_TAG_set_type: |
c906108c | 8294 | case DW_TAG_array_type: |
c906108c | 8295 | case DW_TAG_pointer_type: |
c906108c | 8296 | case DW_TAG_ptr_to_member_type: |
c906108c | 8297 | case DW_TAG_reference_type: |
c906108c | 8298 | case DW_TAG_string_type: |
c906108c | 8299 | break; |
134d01f1 | 8300 | |
c906108c | 8301 | case DW_TAG_base_type: |
a02abb62 | 8302 | case DW_TAG_subrange_type: |
cb249c71 | 8303 | case DW_TAG_typedef: |
134d01f1 DJ |
8304 | /* Add a typedef symbol for the type definition, if it has a |
8305 | DW_AT_name. */ | |
f792889a | 8306 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 8307 | break; |
c906108c | 8308 | case DW_TAG_common_block: |
e7c27a73 | 8309 | read_common_block (die, cu); |
c906108c SS |
8310 | break; |
8311 | case DW_TAG_common_inclusion: | |
8312 | break; | |
d9fa45fe | 8313 | case DW_TAG_namespace: |
4d4ec4e5 | 8314 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 8315 | read_namespace (die, cu); |
d9fa45fe | 8316 | break; |
5d7cb8df | 8317 | case DW_TAG_module: |
4d4ec4e5 | 8318 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
8319 | read_module (die, cu); |
8320 | break; | |
d9fa45fe | 8321 | case DW_TAG_imported_declaration: |
74921315 KS |
8322 | cu->processing_has_namespace_info = 1; |
8323 | if (read_namespace_alias (die, cu)) | |
8324 | break; | |
8325 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 8326 | case DW_TAG_imported_module: |
4d4ec4e5 | 8327 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
8328 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
8329 | || cu->language != language_fortran)) | |
8330 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
8331 | dwarf_tag_name (die->tag)); | |
8332 | read_import_statement (die, cu); | |
d9fa45fe | 8333 | break; |
95554aad TT |
8334 | |
8335 | case DW_TAG_imported_unit: | |
8336 | process_imported_unit_die (die, cu); | |
8337 | break; | |
8338 | ||
c906108c | 8339 | default: |
e7c27a73 | 8340 | new_symbol (die, NULL, cu); |
c906108c SS |
8341 | break; |
8342 | } | |
adde2bff DE |
8343 | |
8344 | do_cleanups (in_process); | |
c906108c | 8345 | } |
ca69b9e6 DE |
8346 | \f |
8347 | /* DWARF name computation. */ | |
c906108c | 8348 | |
94af9270 KS |
8349 | /* A helper function for dwarf2_compute_name which determines whether DIE |
8350 | needs to have the name of the scope prepended to the name listed in the | |
8351 | die. */ | |
8352 | ||
8353 | static int | |
8354 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8355 | { | |
1c809c68 TT |
8356 | struct attribute *attr; |
8357 | ||
94af9270 KS |
8358 | switch (die->tag) |
8359 | { | |
8360 | case DW_TAG_namespace: | |
8361 | case DW_TAG_typedef: | |
8362 | case DW_TAG_class_type: | |
8363 | case DW_TAG_interface_type: | |
8364 | case DW_TAG_structure_type: | |
8365 | case DW_TAG_union_type: | |
8366 | case DW_TAG_enumeration_type: | |
8367 | case DW_TAG_enumerator: | |
8368 | case DW_TAG_subprogram: | |
08a76f8a | 8369 | case DW_TAG_inlined_subroutine: |
94af9270 | 8370 | case DW_TAG_member: |
74921315 | 8371 | case DW_TAG_imported_declaration: |
94af9270 KS |
8372 | return 1; |
8373 | ||
8374 | case DW_TAG_variable: | |
c2b0a229 | 8375 | case DW_TAG_constant: |
94af9270 KS |
8376 | /* We only need to prefix "globally" visible variables. These include |
8377 | any variable marked with DW_AT_external or any variable that | |
8378 | lives in a namespace. [Variables in anonymous namespaces | |
8379 | require prefixing, but they are not DW_AT_external.] */ | |
8380 | ||
8381 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
8382 | { | |
8383 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 8384 | |
94af9270 KS |
8385 | return die_needs_namespace (die_specification (die, &spec_cu), |
8386 | spec_cu); | |
8387 | } | |
8388 | ||
1c809c68 | 8389 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
8390 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
8391 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
8392 | return 0; |
8393 | /* A variable in a lexical block of some kind does not need a | |
8394 | namespace, even though in C++ such variables may be external | |
8395 | and have a mangled name. */ | |
8396 | if (die->parent->tag == DW_TAG_lexical_block | |
8397 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
8398 | || die->parent->tag == DW_TAG_catch_block |
8399 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
8400 | return 0; |
8401 | return 1; | |
94af9270 KS |
8402 | |
8403 | default: | |
8404 | return 0; | |
8405 | } | |
8406 | } | |
8407 | ||
98bfdba5 PA |
8408 | /* Retrieve the last character from a mem_file. */ |
8409 | ||
8410 | static void | |
8411 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
8412 | { | |
8413 | char *last_char_p = (char *) object; | |
8414 | ||
8415 | if (length > 0) | |
8416 | *last_char_p = buffer[length - 1]; | |
8417 | } | |
8418 | ||
94af9270 | 8419 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
8420 | compute the physname for the object, which include a method's: |
8421 | - formal parameters (C++/Java), | |
8422 | - receiver type (Go), | |
8423 | - return type (Java). | |
8424 | ||
8425 | The term "physname" is a bit confusing. | |
8426 | For C++, for example, it is the demangled name. | |
8427 | For Go, for example, it's the mangled name. | |
94af9270 | 8428 | |
af6b7be1 JB |
8429 | For Ada, return the DIE's linkage name rather than the fully qualified |
8430 | name. PHYSNAME is ignored.. | |
8431 | ||
94af9270 KS |
8432 | The result is allocated on the objfile_obstack and canonicalized. */ |
8433 | ||
8434 | static const char * | |
15d034d0 TT |
8435 | dwarf2_compute_name (const char *name, |
8436 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
8437 | int physname) |
8438 | { | |
bb5ed363 DE |
8439 | struct objfile *objfile = cu->objfile; |
8440 | ||
94af9270 KS |
8441 | if (name == NULL) |
8442 | name = dwarf2_name (die, cu); | |
8443 | ||
f55ee35c JK |
8444 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
8445 | compute it by typename_concat inside GDB. */ | |
8446 | if (cu->language == language_ada | |
8447 | || (cu->language == language_fortran && physname)) | |
8448 | { | |
8449 | /* For Ada unit, we prefer the linkage name over the name, as | |
8450 | the former contains the exported name, which the user expects | |
8451 | to be able to reference. Ideally, we want the user to be able | |
8452 | to reference this entity using either natural or linkage name, | |
8453 | but we haven't started looking at this enhancement yet. */ | |
8454 | struct attribute *attr; | |
8455 | ||
8456 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8457 | if (attr == NULL) | |
8458 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8459 | if (attr && DW_STRING (attr)) | |
8460 | return DW_STRING (attr); | |
8461 | } | |
8462 | ||
94af9270 KS |
8463 | /* These are the only languages we know how to qualify names in. */ |
8464 | if (name != NULL | |
f55ee35c JK |
8465 | && (cu->language == language_cplus || cu->language == language_java |
8466 | || cu->language == language_fortran)) | |
94af9270 KS |
8467 | { |
8468 | if (die_needs_namespace (die, cu)) | |
8469 | { | |
8470 | long length; | |
0d5cff50 | 8471 | const char *prefix; |
94af9270 | 8472 | struct ui_file *buf; |
34a68019 TT |
8473 | char *intermediate_name; |
8474 | const char *canonical_name = NULL; | |
94af9270 KS |
8475 | |
8476 | prefix = determine_prefix (die, cu); | |
8477 | buf = mem_fileopen (); | |
8478 | if (*prefix != '\0') | |
8479 | { | |
f55ee35c JK |
8480 | char *prefixed_name = typename_concat (NULL, prefix, name, |
8481 | physname, cu); | |
9a619af0 | 8482 | |
94af9270 KS |
8483 | fputs_unfiltered (prefixed_name, buf); |
8484 | xfree (prefixed_name); | |
8485 | } | |
8486 | else | |
62d5b8da | 8487 | fputs_unfiltered (name, buf); |
94af9270 | 8488 | |
98bfdba5 PA |
8489 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
8490 | as children with DW_TAG_template_type_param or | |
8491 | DW_TAG_value_type_param. If the latter, add them to the name | |
8492 | here. If the name already has template parameters, then | |
8493 | skip this step; some versions of GCC emit both, and | |
8494 | it is more efficient to use the pre-computed name. | |
8495 | ||
8496 | Something to keep in mind about this process: it is very | |
8497 | unlikely, or in some cases downright impossible, to produce | |
8498 | something that will match the mangled name of a function. | |
8499 | If the definition of the function has the same debug info, | |
8500 | we should be able to match up with it anyway. But fallbacks | |
8501 | using the minimal symbol, for instance to find a method | |
8502 | implemented in a stripped copy of libstdc++, will not work. | |
8503 | If we do not have debug info for the definition, we will have to | |
8504 | match them up some other way. | |
8505 | ||
8506 | When we do name matching there is a related problem with function | |
8507 | templates; two instantiated function templates are allowed to | |
8508 | differ only by their return types, which we do not add here. */ | |
8509 | ||
8510 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
8511 | { | |
8512 | struct attribute *attr; | |
8513 | struct die_info *child; | |
8514 | int first = 1; | |
8515 | ||
8516 | die->building_fullname = 1; | |
8517 | ||
8518 | for (child = die->child; child != NULL; child = child->sibling) | |
8519 | { | |
8520 | struct type *type; | |
12df843f | 8521 | LONGEST value; |
d521ce57 | 8522 | const gdb_byte *bytes; |
98bfdba5 PA |
8523 | struct dwarf2_locexpr_baton *baton; |
8524 | struct value *v; | |
8525 | ||
8526 | if (child->tag != DW_TAG_template_type_param | |
8527 | && child->tag != DW_TAG_template_value_param) | |
8528 | continue; | |
8529 | ||
8530 | if (first) | |
8531 | { | |
8532 | fputs_unfiltered ("<", buf); | |
8533 | first = 0; | |
8534 | } | |
8535 | else | |
8536 | fputs_unfiltered (", ", buf); | |
8537 | ||
8538 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
8539 | if (attr == NULL) | |
8540 | { | |
8541 | complaint (&symfile_complaints, | |
8542 | _("template parameter missing DW_AT_type")); | |
8543 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
8544 | continue; | |
8545 | } | |
8546 | type = die_type (child, cu); | |
8547 | ||
8548 | if (child->tag == DW_TAG_template_type_param) | |
8549 | { | |
79d43c61 | 8550 | c_print_type (type, "", buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
8551 | continue; |
8552 | } | |
8553 | ||
8554 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
8555 | if (attr == NULL) | |
8556 | { | |
8557 | complaint (&symfile_complaints, | |
3e43a32a MS |
8558 | _("template parameter missing " |
8559 | "DW_AT_const_value")); | |
98bfdba5 PA |
8560 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
8561 | continue; | |
8562 | } | |
8563 | ||
8564 | dwarf2_const_value_attr (attr, type, name, | |
8565 | &cu->comp_unit_obstack, cu, | |
8566 | &value, &bytes, &baton); | |
8567 | ||
8568 | if (TYPE_NOSIGN (type)) | |
8569 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
8570 | changed, this can use value_print instead. */ | |
8571 | c_printchar (value, type, buf); | |
8572 | else | |
8573 | { | |
8574 | struct value_print_options opts; | |
8575 | ||
8576 | if (baton != NULL) | |
8577 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
8578 | baton->data, | |
8579 | baton->size, | |
8580 | baton->per_cu); | |
8581 | else if (bytes != NULL) | |
8582 | { | |
8583 | v = allocate_value (type); | |
8584 | memcpy (value_contents_writeable (v), bytes, | |
8585 | TYPE_LENGTH (type)); | |
8586 | } | |
8587 | else | |
8588 | v = value_from_longest (type, value); | |
8589 | ||
3e43a32a MS |
8590 | /* Specify decimal so that we do not depend on |
8591 | the radix. */ | |
98bfdba5 PA |
8592 | get_formatted_print_options (&opts, 'd'); |
8593 | opts.raw = 1; | |
8594 | value_print (v, buf, &opts); | |
8595 | release_value (v); | |
8596 | value_free (v); | |
8597 | } | |
8598 | } | |
8599 | ||
8600 | die->building_fullname = 0; | |
8601 | ||
8602 | if (!first) | |
8603 | { | |
8604 | /* Close the argument list, with a space if necessary | |
8605 | (nested templates). */ | |
8606 | char last_char = '\0'; | |
8607 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
8608 | if (last_char == '>') | |
8609 | fputs_unfiltered (" >", buf); | |
8610 | else | |
8611 | fputs_unfiltered (">", buf); | |
8612 | } | |
8613 | } | |
8614 | ||
94af9270 KS |
8615 | /* For Java and C++ methods, append formal parameter type |
8616 | information, if PHYSNAME. */ | |
6e70227d | 8617 | |
94af9270 KS |
8618 | if (physname && die->tag == DW_TAG_subprogram |
8619 | && (cu->language == language_cplus | |
8620 | || cu->language == language_java)) | |
8621 | { | |
8622 | struct type *type = read_type_die (die, cu); | |
8623 | ||
79d43c61 TT |
8624 | c_type_print_args (type, buf, 1, cu->language, |
8625 | &type_print_raw_options); | |
94af9270 KS |
8626 | |
8627 | if (cu->language == language_java) | |
8628 | { | |
8629 | /* For java, we must append the return type to method | |
0963b4bd | 8630 | names. */ |
94af9270 KS |
8631 | if (die->tag == DW_TAG_subprogram) |
8632 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
79d43c61 | 8633 | 0, 0, &type_print_raw_options); |
94af9270 KS |
8634 | } |
8635 | else if (cu->language == language_cplus) | |
8636 | { | |
60430eff DJ |
8637 | /* Assume that an artificial first parameter is |
8638 | "this", but do not crash if it is not. RealView | |
8639 | marks unnamed (and thus unused) parameters as | |
8640 | artificial; there is no way to differentiate | |
8641 | the two cases. */ | |
94af9270 KS |
8642 | if (TYPE_NFIELDS (type) > 0 |
8643 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 8644 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
8645 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
8646 | 0)))) | |
94af9270 KS |
8647 | fputs_unfiltered (" const", buf); |
8648 | } | |
8649 | } | |
8650 | ||
34a68019 | 8651 | intermediate_name = ui_file_xstrdup (buf, &length); |
94af9270 KS |
8652 | ui_file_delete (buf); |
8653 | ||
8654 | if (cu->language == language_cplus) | |
34a68019 TT |
8655 | canonical_name |
8656 | = dwarf2_canonicalize_name (intermediate_name, cu, | |
8657 | &objfile->per_bfd->storage_obstack); | |
8658 | ||
8659 | /* If we only computed INTERMEDIATE_NAME, or if | |
8660 | INTERMEDIATE_NAME is already canonical, then we need to | |
8661 | copy it to the appropriate obstack. */ | |
8662 | if (canonical_name == NULL || canonical_name == intermediate_name) | |
8663 | name = obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
8664 | intermediate_name, | |
8665 | strlen (intermediate_name)); | |
8666 | else | |
8667 | name = canonical_name; | |
9a619af0 | 8668 | |
34a68019 | 8669 | xfree (intermediate_name); |
94af9270 KS |
8670 | } |
8671 | } | |
8672 | ||
8673 | return name; | |
8674 | } | |
8675 | ||
0114d602 DJ |
8676 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
8677 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 8678 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
8679 | not have a name. NAME may either be from a previous call to |
8680 | dwarf2_name or NULL. | |
8681 | ||
0963b4bd | 8682 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
8683 | |
8684 | static const char * | |
15d034d0 | 8685 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 8686 | { |
94af9270 KS |
8687 | return dwarf2_compute_name (name, die, cu, 0); |
8688 | } | |
0114d602 | 8689 | |
94af9270 KS |
8690 | /* Construct a physname for the given DIE in CU. NAME may either be |
8691 | from a previous call to dwarf2_name or NULL. The result will be | |
8692 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
8693 | name. | |
0114d602 | 8694 | |
94af9270 | 8695 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 8696 | |
94af9270 | 8697 | static const char * |
15d034d0 | 8698 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 8699 | { |
bb5ed363 | 8700 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
8701 | struct attribute *attr; |
8702 | const char *retval, *mangled = NULL, *canon = NULL; | |
8703 | struct cleanup *back_to; | |
8704 | int need_copy = 1; | |
8705 | ||
8706 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
8707 | on its own. */ | |
8708 | if (!die_needs_namespace (die, cu)) | |
8709 | return dwarf2_compute_name (name, die, cu, 1); | |
8710 | ||
8711 | back_to = make_cleanup (null_cleanup, NULL); | |
8712 | ||
8713 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8714 | if (!attr) | |
8715 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8716 | ||
8717 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
8718 | has computed. */ | |
8719 | if (attr && DW_STRING (attr)) | |
8720 | { | |
8721 | char *demangled; | |
8722 | ||
8723 | mangled = DW_STRING (attr); | |
8724 | ||
8725 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
8726 | type. It is easier for GDB users to search for such functions as | |
8727 | `name(params)' than `long name(params)'. In such case the minimal | |
8728 | symbol names do not match the full symbol names but for template | |
8729 | functions there is never a need to look up their definition from their | |
8730 | declaration so the only disadvantage remains the minimal symbol | |
8731 | variant `long name(params)' does not have the proper inferior type. | |
8732 | */ | |
8733 | ||
a766d390 DE |
8734 | if (cu->language == language_go) |
8735 | { | |
8736 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
8737 | new_symbol_full assumes we return the mangled name. | |
8738 | This just undoes that lie until things are cleaned up. */ | |
8739 | demangled = NULL; | |
8740 | } | |
8741 | else | |
8742 | { | |
8de20a37 TT |
8743 | demangled = gdb_demangle (mangled, |
8744 | (DMGL_PARAMS | DMGL_ANSI | |
8745 | | (cu->language == language_java | |
8746 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
8747 | : DMGL_RET_DROP))); | |
a766d390 | 8748 | } |
900e11f9 JK |
8749 | if (demangled) |
8750 | { | |
8751 | make_cleanup (xfree, demangled); | |
8752 | canon = demangled; | |
8753 | } | |
8754 | else | |
8755 | { | |
8756 | canon = mangled; | |
8757 | need_copy = 0; | |
8758 | } | |
8759 | } | |
8760 | ||
8761 | if (canon == NULL || check_physname) | |
8762 | { | |
8763 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
8764 | ||
8765 | if (canon != NULL && strcmp (physname, canon) != 0) | |
8766 | { | |
8767 | /* It may not mean a bug in GDB. The compiler could also | |
8768 | compute DW_AT_linkage_name incorrectly. But in such case | |
8769 | GDB would need to be bug-to-bug compatible. */ | |
8770 | ||
8771 | complaint (&symfile_complaints, | |
8772 | _("Computed physname <%s> does not match demangled <%s> " | |
8773 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
4262abfb JK |
8774 | physname, canon, mangled, die->offset.sect_off, |
8775 | objfile_name (objfile)); | |
900e11f9 JK |
8776 | |
8777 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
8778 | is available here - over computed PHYSNAME. It is safer | |
8779 | against both buggy GDB and buggy compilers. */ | |
8780 | ||
8781 | retval = canon; | |
8782 | } | |
8783 | else | |
8784 | { | |
8785 | retval = physname; | |
8786 | need_copy = 0; | |
8787 | } | |
8788 | } | |
8789 | else | |
8790 | retval = canon; | |
8791 | ||
8792 | if (need_copy) | |
34a68019 TT |
8793 | retval = obstack_copy0 (&objfile->per_bfd->storage_obstack, |
8794 | retval, strlen (retval)); | |
900e11f9 JK |
8795 | |
8796 | do_cleanups (back_to); | |
8797 | return retval; | |
0114d602 DJ |
8798 | } |
8799 | ||
74921315 KS |
8800 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
8801 | a new symbol for it. | |
8802 | ||
8803 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
8804 | ||
8805 | static int | |
8806 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
8807 | { | |
8808 | struct attribute *attr; | |
8809 | ||
8810 | /* If the die does not have a name, this is not a namespace | |
8811 | alias. */ | |
8812 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8813 | if (attr != NULL) | |
8814 | { | |
8815 | int num; | |
8816 | struct die_info *d = die; | |
8817 | struct dwarf2_cu *imported_cu = cu; | |
8818 | ||
8819 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
8820 | keep inspecting DIEs until we hit the underlying import. */ | |
8821 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
8822 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
8823 | { | |
8824 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
8825 | if (attr == NULL) | |
8826 | break; | |
8827 | ||
8828 | d = follow_die_ref (d, attr, &imported_cu); | |
8829 | if (d->tag != DW_TAG_imported_declaration) | |
8830 | break; | |
8831 | } | |
8832 | ||
8833 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
8834 | { | |
8835 | complaint (&symfile_complaints, | |
8836 | _("DIE at 0x%x has too many recursively imported " | |
8837 | "declarations"), d->offset.sect_off); | |
8838 | return 0; | |
8839 | } | |
8840 | ||
8841 | if (attr != NULL) | |
8842 | { | |
8843 | struct type *type; | |
8844 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
8845 | ||
8846 | type = get_die_type_at_offset (offset, cu->per_cu); | |
8847 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
8848 | { | |
8849 | /* This declaration is a global namespace alias. Add | |
8850 | a symbol for it whose type is the aliased namespace. */ | |
8851 | new_symbol (die, type, cu); | |
8852 | return 1; | |
8853 | } | |
8854 | } | |
8855 | } | |
8856 | ||
8857 | return 0; | |
8858 | } | |
8859 | ||
27aa8d6a SW |
8860 | /* Read the import statement specified by the given die and record it. */ |
8861 | ||
8862 | static void | |
8863 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
8864 | { | |
bb5ed363 | 8865 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 8866 | struct attribute *import_attr; |
32019081 | 8867 | struct die_info *imported_die, *child_die; |
de4affc9 | 8868 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 8869 | const char *imported_name; |
794684b6 | 8870 | const char *imported_name_prefix; |
13387711 SW |
8871 | const char *canonical_name; |
8872 | const char *import_alias; | |
8873 | const char *imported_declaration = NULL; | |
794684b6 | 8874 | const char *import_prefix; |
32019081 JK |
8875 | VEC (const_char_ptr) *excludes = NULL; |
8876 | struct cleanup *cleanups; | |
13387711 | 8877 | |
27aa8d6a SW |
8878 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
8879 | if (import_attr == NULL) | |
8880 | { | |
8881 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8882 | dwarf_tag_name (die->tag)); | |
8883 | return; | |
8884 | } | |
8885 | ||
de4affc9 CC |
8886 | imported_cu = cu; |
8887 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
8888 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
8889 | if (imported_name == NULL) |
8890 | { | |
8891 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
8892 | ||
8893 | The import in the following code: | |
8894 | namespace A | |
8895 | { | |
8896 | typedef int B; | |
8897 | } | |
8898 | ||
8899 | int main () | |
8900 | { | |
8901 | using A::B; | |
8902 | B b; | |
8903 | return b; | |
8904 | } | |
8905 | ||
8906 | ... | |
8907 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
8908 | <52> DW_AT_decl_file : 1 | |
8909 | <53> DW_AT_decl_line : 6 | |
8910 | <54> DW_AT_import : <0x75> | |
8911 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
8912 | <59> DW_AT_name : B | |
8913 | <5b> DW_AT_decl_file : 1 | |
8914 | <5c> DW_AT_decl_line : 2 | |
8915 | <5d> DW_AT_type : <0x6e> | |
8916 | ... | |
8917 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
8918 | <76> DW_AT_byte_size : 4 | |
8919 | <77> DW_AT_encoding : 5 (signed) | |
8920 | ||
8921 | imports the wrong die ( 0x75 instead of 0x58 ). | |
8922 | This case will be ignored until the gcc bug is fixed. */ | |
8923 | return; | |
8924 | } | |
8925 | ||
82856980 SW |
8926 | /* Figure out the local name after import. */ |
8927 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 8928 | |
794684b6 SW |
8929 | /* Figure out where the statement is being imported to. */ |
8930 | import_prefix = determine_prefix (die, cu); | |
8931 | ||
8932 | /* Figure out what the scope of the imported die is and prepend it | |
8933 | to the name of the imported die. */ | |
de4affc9 | 8934 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 8935 | |
f55ee35c JK |
8936 | if (imported_die->tag != DW_TAG_namespace |
8937 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 8938 | { |
13387711 SW |
8939 | imported_declaration = imported_name; |
8940 | canonical_name = imported_name_prefix; | |
794684b6 | 8941 | } |
13387711 | 8942 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 TT |
8943 | canonical_name = obconcat (&objfile->objfile_obstack, |
8944 | imported_name_prefix, "::", imported_name, | |
8945 | (char *) NULL); | |
13387711 SW |
8946 | else |
8947 | canonical_name = imported_name; | |
794684b6 | 8948 | |
32019081 JK |
8949 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
8950 | ||
8951 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
8952 | for (child_die = die->child; child_die && child_die->tag; | |
8953 | child_die = sibling_die (child_die)) | |
8954 | { | |
8955 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
8956 | represented by an imported module entry with an import attribute | |
8957 | referring to the module and owned entries corresponding to those | |
8958 | entities that are renamed as part of being imported. */ | |
8959 | ||
8960 | if (child_die->tag != DW_TAG_imported_declaration) | |
8961 | { | |
8962 | complaint (&symfile_complaints, | |
8963 | _("child DW_TAG_imported_declaration expected " | |
8964 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 8965 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8966 | continue; |
8967 | } | |
8968 | ||
8969 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
8970 | if (import_attr == NULL) | |
8971 | { | |
8972 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8973 | dwarf_tag_name (child_die->tag)); | |
8974 | continue; | |
8975 | } | |
8976 | ||
8977 | imported_cu = cu; | |
8978 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
8979 | &imported_cu); | |
8980 | imported_name = dwarf2_name (imported_die, imported_cu); | |
8981 | if (imported_name == NULL) | |
8982 | { | |
8983 | complaint (&symfile_complaints, | |
8984 | _("child DW_TAG_imported_declaration has unknown " | |
8985 | "imported name - DIE at 0x%x [in module %s]"), | |
4262abfb | 8986 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8987 | continue; |
8988 | } | |
8989 | ||
8990 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
8991 | ||
8992 | process_die (child_die, cu); | |
8993 | } | |
8994 | ||
c0cc3a76 SW |
8995 | cp_add_using_directive (import_prefix, |
8996 | canonical_name, | |
8997 | import_alias, | |
13387711 | 8998 | imported_declaration, |
32019081 | 8999 | excludes, |
12aaed36 | 9000 | 0, |
bb5ed363 | 9001 | &objfile->objfile_obstack); |
32019081 JK |
9002 | |
9003 | do_cleanups (cleanups); | |
27aa8d6a SW |
9004 | } |
9005 | ||
f4dc4d17 | 9006 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 9007 | |
cb1df416 DJ |
9008 | static void |
9009 | free_cu_line_header (void *arg) | |
9010 | { | |
9011 | struct dwarf2_cu *cu = arg; | |
9012 | ||
9013 | free_line_header (cu->line_header); | |
9014 | cu->line_header = NULL; | |
9015 | } | |
9016 | ||
1b80a9fa JK |
9017 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
9018 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
9019 | this, it was first present in GCC release 4.3.0. */ | |
9020 | ||
9021 | static int | |
9022 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
9023 | { | |
9024 | if (!cu->checked_producer) | |
9025 | check_producer (cu); | |
9026 | ||
9027 | return cu->producer_is_gcc_lt_4_3; | |
9028 | } | |
9029 | ||
9291a0cd TT |
9030 | static void |
9031 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 9032 | const char **name, const char **comp_dir) |
9291a0cd TT |
9033 | { |
9034 | struct attribute *attr; | |
9035 | ||
9036 | *name = NULL; | |
9037 | *comp_dir = NULL; | |
9038 | ||
9039 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
9040 | is not a source language identifier. */ | |
9041 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
9042 | if (attr) | |
9043 | { | |
9044 | *name = DW_STRING (attr); | |
9045 | } | |
9046 | ||
9047 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
9048 | if (attr) | |
9049 | *comp_dir = DW_STRING (attr); | |
1b80a9fa JK |
9050 | else if (producer_is_gcc_lt_4_3 (cu) && *name != NULL |
9051 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 9052 | { |
15d034d0 TT |
9053 | char *d = ldirname (*name); |
9054 | ||
9055 | *comp_dir = d; | |
9056 | if (d != NULL) | |
9057 | make_cleanup (xfree, d); | |
9291a0cd TT |
9058 | } |
9059 | if (*comp_dir != NULL) | |
9060 | { | |
9061 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
9062 | directory, get rid of it. */ | |
9063 | char *cp = strchr (*comp_dir, ':'); | |
9064 | ||
9065 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
9066 | *comp_dir = cp + 1; | |
9067 | } | |
9068 | ||
9069 | if (*name == NULL) | |
9070 | *name = "<unknown>"; | |
9071 | } | |
9072 | ||
f4dc4d17 DE |
9073 | /* Handle DW_AT_stmt_list for a compilation unit. |
9074 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
9075 | COMP_DIR is the compilation directory. LOWPC is passed to |
9076 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
9077 | |
9078 | static void | |
9079 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 9080 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 9081 | { |
527f3840 | 9082 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 9083 | struct attribute *attr; |
527f3840 JK |
9084 | unsigned int line_offset; |
9085 | struct line_header line_header_local; | |
9086 | hashval_t line_header_local_hash; | |
9087 | unsigned u; | |
9088 | void **slot; | |
9089 | int decode_mapping; | |
2ab95328 | 9090 | |
f4dc4d17 DE |
9091 | gdb_assert (! cu->per_cu->is_debug_types); |
9092 | ||
2ab95328 | 9093 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
9094 | if (attr == NULL) |
9095 | return; | |
9096 | ||
9097 | line_offset = DW_UNSND (attr); | |
9098 | ||
9099 | /* The line header hash table is only created if needed (it exists to | |
9100 | prevent redundant reading of the line table for partial_units). | |
9101 | If we're given a partial_unit, we'll need it. If we're given a | |
9102 | compile_unit, then use the line header hash table if it's already | |
9103 | created, but don't create one just yet. */ | |
9104 | ||
9105 | if (dwarf2_per_objfile->line_header_hash == NULL | |
9106 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 9107 | { |
527f3840 JK |
9108 | dwarf2_per_objfile->line_header_hash |
9109 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
9110 | line_header_eq_voidp, | |
9111 | free_line_header_voidp, | |
9112 | &objfile->objfile_obstack, | |
9113 | hashtab_obstack_allocate, | |
9114 | dummy_obstack_deallocate); | |
9115 | } | |
2ab95328 | 9116 | |
527f3840 JK |
9117 | line_header_local.offset.sect_off = line_offset; |
9118 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; | |
9119 | line_header_local_hash = line_header_hash (&line_header_local); | |
9120 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
9121 | { | |
9122 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9123 | &line_header_local, | |
9124 | line_header_local_hash, NO_INSERT); | |
9125 | ||
9126 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
9127 | is not present in *SLOT (since if there is something in *SLOT then | |
9128 | it will be for a partial_unit). */ | |
9129 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 9130 | { |
527f3840 JK |
9131 | gdb_assert (*slot != NULL); |
9132 | cu->line_header = *slot; | |
9133 | return; | |
dee91e82 | 9134 | } |
2ab95328 | 9135 | } |
527f3840 JK |
9136 | |
9137 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
9138 | We always have to call also dwarf_decode_lines for it. */ | |
9139 | cu->line_header = dwarf_decode_line_header (line_offset, cu); | |
9140 | if (cu->line_header == NULL) | |
9141 | return; | |
9142 | ||
9143 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
9144 | slot = NULL; | |
9145 | else | |
9146 | { | |
9147 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9148 | &line_header_local, | |
9149 | line_header_local_hash, INSERT); | |
9150 | gdb_assert (slot != NULL); | |
9151 | } | |
9152 | if (slot != NULL && *slot == NULL) | |
9153 | { | |
9154 | /* This newly decoded line number information unit will be owned | |
9155 | by line_header_hash hash table. */ | |
9156 | *slot = cu->line_header; | |
9157 | } | |
9158 | else | |
9159 | { | |
9160 | /* We cannot free any current entry in (*slot) as that struct line_header | |
9161 | may be already used by multiple CUs. Create only temporary decoded | |
9162 | line_header for this CU - it may happen at most once for each line | |
9163 | number information unit. And if we're not using line_header_hash | |
9164 | then this is what we want as well. */ | |
9165 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
9166 | make_cleanup (free_cu_line_header, cu); | |
9167 | } | |
9168 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
9169 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
9170 | decode_mapping); | |
2ab95328 TT |
9171 | } |
9172 | ||
95554aad | 9173 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 9174 | |
c906108c | 9175 | static void |
e7c27a73 | 9176 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9177 | { |
dee91e82 | 9178 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 9179 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
debd256d | 9180 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 9181 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
9182 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
9183 | struct attribute *attr; | |
15d034d0 TT |
9184 | const char *name = NULL; |
9185 | const char *comp_dir = NULL; | |
c906108c SS |
9186 | struct die_info *child_die; |
9187 | bfd *abfd = objfile->obfd; | |
e142c38c | 9188 | CORE_ADDR baseaddr; |
6e70227d | 9189 | |
e142c38c | 9190 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 9191 | |
fae299cd | 9192 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
9193 | |
9194 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
9195 | from finish_block. */ | |
2acceee2 | 9196 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 9197 | lowpc = highpc; |
3e29f34a | 9198 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 9199 | |
9291a0cd | 9200 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 9201 | |
95554aad | 9202 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 9203 | |
f4b8a18d KW |
9204 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
9205 | standardised yet. As a workaround for the language detection we fall | |
9206 | back to the DW_AT_producer string. */ | |
9207 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
9208 | cu->language = language_opencl; | |
9209 | ||
3019eac3 DE |
9210 | /* Similar hack for Go. */ |
9211 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
9212 | set_cu_language (DW_LANG_Go, cu); | |
9213 | ||
f4dc4d17 | 9214 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
9215 | |
9216 | /* Decode line number information if present. We do this before | |
9217 | processing child DIEs, so that the line header table is available | |
9218 | for DW_AT_decl_file. */ | |
c3b7b696 | 9219 | handle_DW_AT_stmt_list (die, cu, comp_dir, lowpc); |
3019eac3 DE |
9220 | |
9221 | /* Process all dies in compilation unit. */ | |
9222 | if (die->child != NULL) | |
9223 | { | |
9224 | child_die = die->child; | |
9225 | while (child_die && child_die->tag) | |
9226 | { | |
9227 | process_die (child_die, cu); | |
9228 | child_die = sibling_die (child_die); | |
9229 | } | |
9230 | } | |
9231 | ||
9232 | /* Decode macro information, if present. Dwarf 2 macro information | |
9233 | refers to information in the line number info statement program | |
9234 | header, so we can only read it if we've read the header | |
9235 | successfully. */ | |
9236 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
9237 | if (attr && cu->line_header) | |
9238 | { | |
9239 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
9240 | complaint (&symfile_complaints, | |
9241 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
9242 | ||
43f3e411 | 9243 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
9244 | } |
9245 | else | |
9246 | { | |
9247 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
9248 | if (attr && cu->line_header) | |
9249 | { | |
9250 | unsigned int macro_offset = DW_UNSND (attr); | |
9251 | ||
43f3e411 | 9252 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
9253 | } |
9254 | } | |
9255 | ||
9256 | do_cleanups (back_to); | |
9257 | } | |
9258 | ||
f4dc4d17 DE |
9259 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
9260 | Create the set of symtabs used by this TU, or if this TU is sharing | |
9261 | symtabs with another TU and the symtabs have already been created | |
9262 | then restore those symtabs in the line header. | |
9263 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
9264 | |
9265 | static void | |
f4dc4d17 | 9266 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 9267 | { |
f4dc4d17 DE |
9268 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9269 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
9270 | struct type_unit_group *tu_group; | |
9271 | int first_time; | |
9272 | struct line_header *lh; | |
3019eac3 | 9273 | struct attribute *attr; |
f4dc4d17 | 9274 | unsigned int i, line_offset; |
0186c6a7 | 9275 | struct signatured_type *sig_type; |
3019eac3 | 9276 | |
f4dc4d17 | 9277 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 9278 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 9279 | |
f4dc4d17 | 9280 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 9281 | |
f4dc4d17 | 9282 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 9283 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
9284 | if (sig_type->type_unit_group == NULL) |
9285 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
9286 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
9287 | |
9288 | /* If we've already processed this stmt_list there's no real need to | |
9289 | do it again, we could fake it and just recreate the part we need | |
9290 | (file name,index -> symtab mapping). If data shows this optimization | |
9291 | is useful we can do it then. */ | |
43f3e411 | 9292 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
9293 | |
9294 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
9295 | debug info. */ | |
9296 | lh = NULL; | |
9297 | if (attr != NULL) | |
3019eac3 | 9298 | { |
f4dc4d17 DE |
9299 | line_offset = DW_UNSND (attr); |
9300 | lh = dwarf_decode_line_header (line_offset, cu); | |
9301 | } | |
9302 | if (lh == NULL) | |
9303 | { | |
9304 | if (first_time) | |
9305 | dwarf2_start_symtab (cu, "", NULL, 0); | |
9306 | else | |
9307 | { | |
9308 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 9309 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 9310 | } |
f4dc4d17 | 9311 | return; |
3019eac3 DE |
9312 | } |
9313 | ||
f4dc4d17 DE |
9314 | cu->line_header = lh; |
9315 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 9316 | |
f4dc4d17 DE |
9317 | if (first_time) |
9318 | { | |
43f3e411 | 9319 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 9320 | |
f4dc4d17 DE |
9321 | tu_group->num_symtabs = lh->num_file_names; |
9322 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 9323 | |
f4dc4d17 DE |
9324 | for (i = 0; i < lh->num_file_names; ++i) |
9325 | { | |
d521ce57 | 9326 | const char *dir = NULL; |
f4dc4d17 | 9327 | struct file_entry *fe = &lh->file_names[i]; |
3019eac3 | 9328 | |
afa6c9ab | 9329 | if (fe->dir_index && lh->include_dirs != NULL) |
f4dc4d17 | 9330 | dir = lh->include_dirs[fe->dir_index - 1]; |
4d663531 | 9331 | dwarf2_start_subfile (fe->name, dir); |
3019eac3 | 9332 | |
f4dc4d17 DE |
9333 | if (current_subfile->symtab == NULL) |
9334 | { | |
9335 | /* NOTE: start_subfile will recognize when it's been passed | |
9336 | a file it has already seen. So we can't assume there's a | |
43f3e411 | 9337 | simple mapping from lh->file_names to subfiles, plus |
f4dc4d17 | 9338 | lh->file_names may contain dups. */ |
43f3e411 DE |
9339 | current_subfile->symtab |
9340 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
9341 | } |
9342 | ||
9343 | fe->symtab = current_subfile->symtab; | |
9344 | tu_group->symtabs[i] = fe->symtab; | |
9345 | } | |
9346 | } | |
9347 | else | |
3019eac3 | 9348 | { |
0ab9ce85 | 9349 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 DE |
9350 | |
9351 | for (i = 0; i < lh->num_file_names; ++i) | |
9352 | { | |
9353 | struct file_entry *fe = &lh->file_names[i]; | |
9354 | ||
9355 | fe->symtab = tu_group->symtabs[i]; | |
9356 | } | |
3019eac3 DE |
9357 | } |
9358 | ||
f4dc4d17 DE |
9359 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
9360 | so they don't have a "real" (so to speak) symtab anyway. | |
9361 | There is later code that will assign the main symtab to all symbols | |
9362 | that don't have one. We need to handle the case of a symbol with a | |
9363 | missing symtab (DW_AT_decl_file) anyway. */ | |
9364 | } | |
3019eac3 | 9365 | |
f4dc4d17 DE |
9366 | /* Process DW_TAG_type_unit. |
9367 | For TUs we want to skip the first top level sibling if it's not the | |
9368 | actual type being defined by this TU. In this case the first top | |
9369 | level sibling is there to provide context only. */ | |
3019eac3 | 9370 | |
f4dc4d17 DE |
9371 | static void |
9372 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9373 | { | |
9374 | struct die_info *child_die; | |
3019eac3 | 9375 | |
f4dc4d17 DE |
9376 | prepare_one_comp_unit (cu, die, language_minimal); |
9377 | ||
9378 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
9379 | We do this before processing child DIEs, so that the line header table | |
9380 | is available for DW_AT_decl_file. */ | |
9381 | setup_type_unit_groups (die, cu); | |
9382 | ||
9383 | if (die->child != NULL) | |
9384 | { | |
9385 | child_die = die->child; | |
9386 | while (child_die && child_die->tag) | |
9387 | { | |
9388 | process_die (child_die, cu); | |
9389 | child_die = sibling_die (child_die); | |
9390 | } | |
9391 | } | |
3019eac3 DE |
9392 | } |
9393 | \f | |
80626a55 DE |
9394 | /* DWO/DWP files. |
9395 | ||
9396 | http://gcc.gnu.org/wiki/DebugFission | |
9397 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
9398 | ||
9399 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
9400 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
9401 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
9402 | |
9403 | static hashval_t | |
9404 | hash_dwo_file (const void *item) | |
9405 | { | |
9406 | const struct dwo_file *dwo_file = item; | |
a2ce51a0 | 9407 | hashval_t hash; |
3019eac3 | 9408 | |
a2ce51a0 DE |
9409 | hash = htab_hash_string (dwo_file->dwo_name); |
9410 | if (dwo_file->comp_dir != NULL) | |
9411 | hash += htab_hash_string (dwo_file->comp_dir); | |
9412 | return hash; | |
3019eac3 DE |
9413 | } |
9414 | ||
9415 | static int | |
9416 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
9417 | { | |
9418 | const struct dwo_file *lhs = item_lhs; | |
9419 | const struct dwo_file *rhs = item_rhs; | |
9420 | ||
a2ce51a0 DE |
9421 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
9422 | return 0; | |
9423 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
9424 | return lhs->comp_dir == rhs->comp_dir; | |
9425 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
9426 | } |
9427 | ||
9428 | /* Allocate a hash table for DWO files. */ | |
9429 | ||
9430 | static htab_t | |
9431 | allocate_dwo_file_hash_table (void) | |
9432 | { | |
9433 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9434 | ||
9435 | return htab_create_alloc_ex (41, | |
9436 | hash_dwo_file, | |
9437 | eq_dwo_file, | |
9438 | NULL, | |
9439 | &objfile->objfile_obstack, | |
9440 | hashtab_obstack_allocate, | |
9441 | dummy_obstack_deallocate); | |
9442 | } | |
9443 | ||
80626a55 DE |
9444 | /* Lookup DWO file DWO_NAME. */ |
9445 | ||
9446 | static void ** | |
0ac5b59e | 9447 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
9448 | { |
9449 | struct dwo_file find_entry; | |
9450 | void **slot; | |
9451 | ||
9452 | if (dwarf2_per_objfile->dwo_files == NULL) | |
9453 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
9454 | ||
9455 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
9456 | find_entry.dwo_name = dwo_name; |
9457 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
9458 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
9459 | ||
9460 | return slot; | |
9461 | } | |
9462 | ||
3019eac3 DE |
9463 | static hashval_t |
9464 | hash_dwo_unit (const void *item) | |
9465 | { | |
9466 | const struct dwo_unit *dwo_unit = item; | |
9467 | ||
9468 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
9469 | return dwo_unit->signature; | |
9470 | } | |
9471 | ||
9472 | static int | |
9473 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
9474 | { | |
9475 | const struct dwo_unit *lhs = item_lhs; | |
9476 | const struct dwo_unit *rhs = item_rhs; | |
9477 | ||
9478 | /* The signature is assumed to be unique within the DWO file. | |
9479 | So while object file CU dwo_id's always have the value zero, | |
9480 | that's OK, assuming each object file DWO file has only one CU, | |
9481 | and that's the rule for now. */ | |
9482 | return lhs->signature == rhs->signature; | |
9483 | } | |
9484 | ||
9485 | /* Allocate a hash table for DWO CUs,TUs. | |
9486 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
9487 | ||
9488 | static htab_t | |
9489 | allocate_dwo_unit_table (struct objfile *objfile) | |
9490 | { | |
9491 | /* Start out with a pretty small number. | |
9492 | Generally DWO files contain only one CU and maybe some TUs. */ | |
9493 | return htab_create_alloc_ex (3, | |
9494 | hash_dwo_unit, | |
9495 | eq_dwo_unit, | |
9496 | NULL, | |
9497 | &objfile->objfile_obstack, | |
9498 | hashtab_obstack_allocate, | |
9499 | dummy_obstack_deallocate); | |
9500 | } | |
9501 | ||
80626a55 | 9502 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 9503 | |
19c3d4c9 | 9504 | struct create_dwo_cu_data |
3019eac3 DE |
9505 | { |
9506 | struct dwo_file *dwo_file; | |
19c3d4c9 | 9507 | struct dwo_unit dwo_unit; |
3019eac3 DE |
9508 | }; |
9509 | ||
19c3d4c9 | 9510 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
9511 | |
9512 | static void | |
19c3d4c9 DE |
9513 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
9514 | const gdb_byte *info_ptr, | |
9515 | struct die_info *comp_unit_die, | |
9516 | int has_children, | |
9517 | void *datap) | |
3019eac3 DE |
9518 | { |
9519 | struct dwarf2_cu *cu = reader->cu; | |
9520 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9521 | sect_offset offset = cu->per_cu->offset; | |
8a0459fd | 9522 | struct dwarf2_section_info *section = cu->per_cu->section; |
19c3d4c9 | 9523 | struct create_dwo_cu_data *data = datap; |
3019eac3 | 9524 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 9525 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 9526 | struct attribute *attr; |
3019eac3 DE |
9527 | |
9528 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
9529 | if (attr == NULL) | |
9530 | { | |
19c3d4c9 DE |
9531 | complaint (&symfile_complaints, |
9532 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
9533 | " its dwo_id [in module %s]"), | |
9534 | offset.sect_off, dwo_file->dwo_name); | |
3019eac3 DE |
9535 | return; |
9536 | } | |
9537 | ||
3019eac3 DE |
9538 | dwo_unit->dwo_file = dwo_file; |
9539 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 9540 | dwo_unit->section = section; |
3019eac3 DE |
9541 | dwo_unit->offset = offset; |
9542 | dwo_unit->length = cu->per_cu->length; | |
9543 | ||
b4f54984 | 9544 | if (dwarf_read_debug) |
4031ecc5 DE |
9545 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9546 | offset.sect_off, hex_string (dwo_unit->signature)); | |
3019eac3 DE |
9547 | } |
9548 | ||
19c3d4c9 DE |
9549 | /* Create the dwo_unit for the lone CU in DWO_FILE. |
9550 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 | 9551 | |
19c3d4c9 DE |
9552 | static struct dwo_unit * |
9553 | create_dwo_cu (struct dwo_file *dwo_file) | |
3019eac3 DE |
9554 | { |
9555 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9556 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
9557 | bfd *abfd; | |
9558 | htab_t cu_htab; | |
d521ce57 | 9559 | const gdb_byte *info_ptr, *end_ptr; |
19c3d4c9 DE |
9560 | struct create_dwo_cu_data create_dwo_cu_data; |
9561 | struct dwo_unit *dwo_unit; | |
3019eac3 DE |
9562 | |
9563 | dwarf2_read_section (objfile, section); | |
9564 | info_ptr = section->buffer; | |
9565 | ||
9566 | if (info_ptr == NULL) | |
9567 | return NULL; | |
9568 | ||
9569 | /* We can't set abfd until now because the section may be empty or | |
9570 | not present, in which case section->asection will be NULL. */ | |
a32a8923 | 9571 | abfd = get_section_bfd_owner (section); |
3019eac3 | 9572 | |
b4f54984 | 9573 | if (dwarf_read_debug) |
19c3d4c9 DE |
9574 | { |
9575 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
a32a8923 DE |
9576 | get_section_name (section), |
9577 | get_section_file_name (section)); | |
19c3d4c9 | 9578 | } |
3019eac3 | 9579 | |
19c3d4c9 DE |
9580 | create_dwo_cu_data.dwo_file = dwo_file; |
9581 | dwo_unit = NULL; | |
3019eac3 DE |
9582 | |
9583 | end_ptr = info_ptr + section->size; | |
9584 | while (info_ptr < end_ptr) | |
9585 | { | |
9586 | struct dwarf2_per_cu_data per_cu; | |
9587 | ||
19c3d4c9 DE |
9588 | memset (&create_dwo_cu_data.dwo_unit, 0, |
9589 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
9590 | memset (&per_cu, 0, sizeof (per_cu)); |
9591 | per_cu.objfile = objfile; | |
9592 | per_cu.is_debug_types = 0; | |
9593 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 9594 | per_cu.section = section; |
3019eac3 | 9595 | |
33e80786 | 9596 | init_cutu_and_read_dies_no_follow (&per_cu, dwo_file, |
19c3d4c9 DE |
9597 | create_dwo_cu_reader, |
9598 | &create_dwo_cu_data); | |
9599 | ||
9600 | if (create_dwo_cu_data.dwo_unit.dwo_file != NULL) | |
9601 | { | |
9602 | /* If we've already found one, complain. We only support one | |
9603 | because having more than one requires hacking the dwo_name of | |
9604 | each to match, which is highly unlikely to happen. */ | |
9605 | if (dwo_unit != NULL) | |
9606 | { | |
9607 | complaint (&symfile_complaints, | |
9608 | _("Multiple CUs in DWO file %s [in module %s]"), | |
4262abfb | 9609 | dwo_file->dwo_name, objfile_name (objfile)); |
19c3d4c9 DE |
9610 | break; |
9611 | } | |
9612 | ||
9613 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9614 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
9615 | } | |
3019eac3 DE |
9616 | |
9617 | info_ptr += per_cu.length; | |
9618 | } | |
9619 | ||
19c3d4c9 | 9620 | return dwo_unit; |
3019eac3 DE |
9621 | } |
9622 | ||
80626a55 DE |
9623 | /* DWP file .debug_{cu,tu}_index section format: |
9624 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
9625 | ||
d2415c6c DE |
9626 | DWP Version 1: |
9627 | ||
80626a55 DE |
9628 | Both index sections have the same format, and serve to map a 64-bit |
9629 | signature to a set of section numbers. Each section begins with a header, | |
9630 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
9631 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
9632 | aligned at 8-byte boundaries in the file. | |
9633 | ||
d2415c6c DE |
9634 | The index section header consists of: |
9635 | ||
9636 | V, 32 bit version number | |
9637 | -, 32 bits unused | |
9638 | N, 32 bit number of compilation units or type units in the index | |
9639 | M, 32 bit number of slots in the hash table | |
80626a55 | 9640 | |
d2415c6c | 9641 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 9642 | |
d2415c6c DE |
9643 | The hash table begins at offset 16 in the section, and consists of an array |
9644 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
9645 | order of the application binary). Unused slots in the hash table are 0. | |
9646 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 9647 | |
d2415c6c DE |
9648 | The parallel table begins immediately after the hash table |
9649 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
9650 | array of 32-bit indexes (using the byte order of the application binary), | |
9651 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
9652 | table contains a 32-bit index into the pool of section numbers. For unused | |
9653 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 9654 | |
73869dc2 DE |
9655 | The pool of section numbers begins immediately following the hash table |
9656 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
9657 | section numbers consists of an array of 32-bit words (using the byte order | |
9658 | of the application binary). Each item in the array is indexed starting | |
9659 | from 0. The hash table entry provides the index of the first section | |
9660 | number in the set. Additional section numbers in the set follow, and the | |
9661 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
9662 | ||
9663 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
9664 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
9665 | be the second entry. Other members of the set may follow in any order. | |
9666 | ||
9667 | --- | |
9668 | ||
9669 | DWP Version 2: | |
9670 | ||
9671 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
9672 | and the entries in the index tables are now offsets into these sections. | |
9673 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
9674 | section. | |
9675 | ||
9676 | Index Section Contents: | |
9677 | Header | |
9678 | Hash Table of Signatures dwp_hash_table.hash_table | |
9679 | Parallel Table of Indices dwp_hash_table.unit_table | |
9680 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
9681 | Table of Section Sizes dwp_hash_table.v2.sizes | |
9682 | ||
9683 | The index section header consists of: | |
9684 | ||
9685 | V, 32 bit version number | |
9686 | L, 32 bit number of columns in the table of section offsets | |
9687 | N, 32 bit number of compilation units or type units in the index | |
9688 | M, 32 bit number of slots in the hash table | |
9689 | ||
9690 | Numbers are recorded using the byte order of the application binary. | |
9691 | ||
9692 | The hash table has the same format as version 1. | |
9693 | The parallel table of indices has the same format as version 1, | |
9694 | except that the entries are origin-1 indices into the table of sections | |
9695 | offsets and the table of section sizes. | |
9696 | ||
9697 | The table of offsets begins immediately following the parallel table | |
9698 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
9699 | a two-dimensional array of 32-bit words (using the byte order of the | |
9700 | application binary), with L columns and N+1 rows, in row-major order. | |
9701 | Each row in the array is indexed starting from 0. The first row provides | |
9702 | a key to the remaining rows: each column in this row provides an identifier | |
9703 | for a debug section, and the offsets in the same column of subsequent rows | |
9704 | refer to that section. The section identifiers are: | |
9705 | ||
9706 | DW_SECT_INFO 1 .debug_info.dwo | |
9707 | DW_SECT_TYPES 2 .debug_types.dwo | |
9708 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
9709 | DW_SECT_LINE 4 .debug_line.dwo | |
9710 | DW_SECT_LOC 5 .debug_loc.dwo | |
9711 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
9712 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
9713 | DW_SECT_MACRO 8 .debug_macro.dwo | |
9714 | ||
9715 | The offsets provided by the CU and TU index sections are the base offsets | |
9716 | for the contributions made by each CU or TU to the corresponding section | |
9717 | in the package file. Each CU and TU header contains an abbrev_offset | |
9718 | field, used to find the abbreviations table for that CU or TU within the | |
9719 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
9720 | be interpreted as relative to the base offset given in the index section. | |
9721 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
9722 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
9723 | and offsets into other debug sections obtained from DWARF attributes should | |
9724 | also be interpreted as relative to the corresponding base offset. | |
9725 | ||
9726 | The table of sizes begins immediately following the table of offsets. | |
9727 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
9728 | with L columns and N rows, in row-major order. Each row in the array is | |
9729 | indexed starting from 1 (row 0 is shared by the two tables). | |
9730 | ||
9731 | --- | |
9732 | ||
9733 | Hash table lookup is handled the same in version 1 and 2: | |
9734 | ||
9735 | We assume that N and M will not exceed 2^32 - 1. | |
9736 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
9737 | ||
d2415c6c DE |
9738 | Given a 64-bit compilation unit signature or a type signature S, an entry |
9739 | in the hash table is located as follows: | |
80626a55 | 9740 | |
d2415c6c DE |
9741 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
9742 | the low-order k bits all set to 1. | |
80626a55 | 9743 | |
d2415c6c | 9744 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 9745 | |
d2415c6c DE |
9746 | 3) If the hash table entry at index H matches the signature, use that |
9747 | entry. If the hash table entry at index H is unused (all zeroes), | |
9748 | terminate the search: the signature is not present in the table. | |
80626a55 | 9749 | |
d2415c6c | 9750 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 9751 | |
d2415c6c | 9752 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 9753 | to stop at an unused slot or find the match. */ |
80626a55 DE |
9754 | |
9755 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
9756 | .debug_{info,types}.dwo in DWP_FILE. | |
9757 | Returns NULL if there isn't one. | |
9758 | Note: This function processes DWP files only, not DWO files. */ | |
9759 | ||
9760 | static struct dwp_hash_table * | |
9761 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
9762 | { | |
9763 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9764 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 9765 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 9766 | struct dwarf2_section_info *index; |
73869dc2 | 9767 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
9768 | struct dwp_hash_table *htab; |
9769 | ||
9770 | if (is_debug_types) | |
9771 | index = &dwp_file->sections.tu_index; | |
9772 | else | |
9773 | index = &dwp_file->sections.cu_index; | |
9774 | ||
9775 | if (dwarf2_section_empty_p (index)) | |
9776 | return NULL; | |
9777 | dwarf2_read_section (objfile, index); | |
9778 | ||
9779 | index_ptr = index->buffer; | |
9780 | index_end = index_ptr + index->size; | |
9781 | ||
9782 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
9783 | index_ptr += 4; |
9784 | if (version == 2) | |
9785 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
9786 | else | |
9787 | nr_columns = 0; | |
9788 | index_ptr += 4; | |
80626a55 DE |
9789 | nr_units = read_4_bytes (dbfd, index_ptr); |
9790 | index_ptr += 4; | |
9791 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
9792 | index_ptr += 4; | |
9793 | ||
73869dc2 | 9794 | if (version != 1 && version != 2) |
80626a55 | 9795 | { |
21aa081e | 9796 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 9797 | " [in module %s]"), |
21aa081e | 9798 | pulongest (version), dwp_file->name); |
80626a55 DE |
9799 | } |
9800 | if (nr_slots != (nr_slots & -nr_slots)) | |
9801 | { | |
21aa081e | 9802 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 9803 | " is not power of 2 [in module %s]"), |
21aa081e | 9804 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
9805 | } |
9806 | ||
9807 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
9808 | htab->version = version; |
9809 | htab->nr_columns = nr_columns; | |
80626a55 DE |
9810 | htab->nr_units = nr_units; |
9811 | htab->nr_slots = nr_slots; | |
9812 | htab->hash_table = index_ptr; | |
9813 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
9814 | |
9815 | /* Exit early if the table is empty. */ | |
9816 | if (nr_slots == 0 || nr_units == 0 | |
9817 | || (version == 2 && nr_columns == 0)) | |
9818 | { | |
9819 | /* All must be zero. */ | |
9820 | if (nr_slots != 0 || nr_units != 0 | |
9821 | || (version == 2 && nr_columns != 0)) | |
9822 | { | |
9823 | complaint (&symfile_complaints, | |
9824 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
9825 | " all zero [in modules %s]"), | |
9826 | dwp_file->name); | |
9827 | } | |
9828 | return htab; | |
9829 | } | |
9830 | ||
9831 | if (version == 1) | |
9832 | { | |
9833 | htab->section_pool.v1.indices = | |
9834 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9835 | /* It's harder to decide whether the section is too small in v1. | |
9836 | V1 is deprecated anyway so we punt. */ | |
9837 | } | |
9838 | else | |
9839 | { | |
9840 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9841 | int *ids = htab->section_pool.v2.section_ids; | |
9842 | /* Reverse map for error checking. */ | |
9843 | int ids_seen[DW_SECT_MAX + 1]; | |
9844 | int i; | |
9845 | ||
9846 | if (nr_columns < 2) | |
9847 | { | |
9848 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
9849 | " in section table [in module %s]"), | |
9850 | dwp_file->name); | |
9851 | } | |
9852 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
9853 | { | |
9854 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
9855 | " in section table [in module %s]"), | |
9856 | dwp_file->name); | |
9857 | } | |
9858 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9859 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9860 | for (i = 0; i < nr_columns; ++i) | |
9861 | { | |
9862 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
9863 | ||
9864 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
9865 | { | |
9866 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
9867 | " in section table [in module %s]"), | |
9868 | id, dwp_file->name); | |
9869 | } | |
9870 | if (ids_seen[id] != -1) | |
9871 | { | |
9872 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
9873 | " id %d in section table [in module %s]"), | |
9874 | id, dwp_file->name); | |
9875 | } | |
9876 | ids_seen[id] = i; | |
9877 | ids[i] = id; | |
9878 | } | |
9879 | /* Must have exactly one info or types section. */ | |
9880 | if (((ids_seen[DW_SECT_INFO] != -1) | |
9881 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
9882 | != 1) | |
9883 | { | |
9884 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
9885 | " DWO info/types section [in module %s]"), | |
9886 | dwp_file->name); | |
9887 | } | |
9888 | /* Must have an abbrev section. */ | |
9889 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
9890 | { | |
9891 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
9892 | " section [in module %s]"), | |
9893 | dwp_file->name); | |
9894 | } | |
9895 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
9896 | htab->section_pool.v2.sizes = | |
9897 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
9898 | * nr_units * nr_columns); | |
9899 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
9900 | * nr_units * nr_columns)) | |
9901 | > index_end) | |
9902 | { | |
9903 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
9904 | " [in module %s]"), | |
9905 | dwp_file->name); | |
9906 | } | |
9907 | } | |
80626a55 DE |
9908 | |
9909 | return htab; | |
9910 | } | |
9911 | ||
9912 | /* Update SECTIONS with the data from SECTP. | |
9913 | ||
9914 | This function is like the other "locate" section routines that are | |
9915 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 9916 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
9917 | |
9918 | The result is non-zero for success, or zero if an error was found. */ | |
9919 | ||
9920 | static int | |
73869dc2 DE |
9921 | locate_v1_virtual_dwo_sections (asection *sectp, |
9922 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
9923 | { |
9924 | const struct dwop_section_names *names = &dwop_section_names; | |
9925 | ||
9926 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
9927 | { | |
9928 | /* There can be only one. */ | |
73869dc2 | 9929 | if (sections->abbrev.s.asection != NULL) |
80626a55 | 9930 | return 0; |
73869dc2 | 9931 | sections->abbrev.s.asection = sectp; |
80626a55 DE |
9932 | sections->abbrev.size = bfd_get_section_size (sectp); |
9933 | } | |
9934 | else if (section_is_p (sectp->name, &names->info_dwo) | |
9935 | || section_is_p (sectp->name, &names->types_dwo)) | |
9936 | { | |
9937 | /* There can be only one. */ | |
73869dc2 | 9938 | if (sections->info_or_types.s.asection != NULL) |
80626a55 | 9939 | return 0; |
73869dc2 | 9940 | sections->info_or_types.s.asection = sectp; |
80626a55 DE |
9941 | sections->info_or_types.size = bfd_get_section_size (sectp); |
9942 | } | |
9943 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
9944 | { | |
9945 | /* There can be only one. */ | |
73869dc2 | 9946 | if (sections->line.s.asection != NULL) |
80626a55 | 9947 | return 0; |
73869dc2 | 9948 | sections->line.s.asection = sectp; |
80626a55 DE |
9949 | sections->line.size = bfd_get_section_size (sectp); |
9950 | } | |
9951 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
9952 | { | |
9953 | /* There can be only one. */ | |
73869dc2 | 9954 | if (sections->loc.s.asection != NULL) |
80626a55 | 9955 | return 0; |
73869dc2 | 9956 | sections->loc.s.asection = sectp; |
80626a55 DE |
9957 | sections->loc.size = bfd_get_section_size (sectp); |
9958 | } | |
9959 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
9960 | { | |
9961 | /* There can be only one. */ | |
73869dc2 | 9962 | if (sections->macinfo.s.asection != NULL) |
80626a55 | 9963 | return 0; |
73869dc2 | 9964 | sections->macinfo.s.asection = sectp; |
80626a55 DE |
9965 | sections->macinfo.size = bfd_get_section_size (sectp); |
9966 | } | |
9967 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
9968 | { | |
9969 | /* There can be only one. */ | |
73869dc2 | 9970 | if (sections->macro.s.asection != NULL) |
80626a55 | 9971 | return 0; |
73869dc2 | 9972 | sections->macro.s.asection = sectp; |
80626a55 DE |
9973 | sections->macro.size = bfd_get_section_size (sectp); |
9974 | } | |
9975 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
9976 | { | |
9977 | /* There can be only one. */ | |
73869dc2 | 9978 | if (sections->str_offsets.s.asection != NULL) |
80626a55 | 9979 | return 0; |
73869dc2 | 9980 | sections->str_offsets.s.asection = sectp; |
80626a55 DE |
9981 | sections->str_offsets.size = bfd_get_section_size (sectp); |
9982 | } | |
9983 | else | |
9984 | { | |
9985 | /* No other kind of section is valid. */ | |
9986 | return 0; | |
9987 | } | |
9988 | ||
9989 | return 1; | |
9990 | } | |
9991 | ||
73869dc2 DE |
9992 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
9993 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9994 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9995 | This is for DWP version 1 files. */ | |
80626a55 DE |
9996 | |
9997 | static struct dwo_unit * | |
73869dc2 DE |
9998 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
9999 | uint32_t unit_index, | |
10000 | const char *comp_dir, | |
10001 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
10002 | { |
10003 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
10004 | const struct dwp_hash_table *dwp_htab = |
10005 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
10006 | bfd *dbfd = dwp_file->dbfd; |
10007 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10008 | struct dwo_file *dwo_file; | |
10009 | struct dwo_unit *dwo_unit; | |
73869dc2 | 10010 | struct virtual_v1_dwo_sections sections; |
80626a55 DE |
10011 | void **dwo_file_slot; |
10012 | char *virtual_dwo_name; | |
10013 | struct dwarf2_section_info *cutu; | |
10014 | struct cleanup *cleanups; | |
10015 | int i; | |
10016 | ||
73869dc2 DE |
10017 | gdb_assert (dwp_file->version == 1); |
10018 | ||
b4f54984 | 10019 | if (dwarf_read_debug) |
80626a55 | 10020 | { |
73869dc2 | 10021 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 10022 | kind, |
73869dc2 | 10023 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
10024 | dwp_file->name); |
10025 | } | |
10026 | ||
19ac8c2e | 10027 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
10028 | Put a limit on the number of sections we look for so that bad data |
10029 | doesn't cause us to loop forever. */ | |
10030 | ||
73869dc2 | 10031 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
10032 | (1 /* .debug_info or .debug_types */ \ |
10033 | + 1 /* .debug_abbrev */ \ | |
10034 | + 1 /* .debug_line */ \ | |
10035 | + 1 /* .debug_loc */ \ | |
10036 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 10037 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
10038 | + 1 /* trailing zero */) |
10039 | ||
10040 | memset (§ions, 0, sizeof (sections)); | |
10041 | cleanups = make_cleanup (null_cleanup, 0); | |
10042 | ||
73869dc2 | 10043 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
10044 | { |
10045 | asection *sectp; | |
10046 | uint32_t section_nr = | |
10047 | read_4_bytes (dbfd, | |
73869dc2 DE |
10048 | dwp_htab->section_pool.v1.indices |
10049 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
10050 | |
10051 | if (section_nr == 0) | |
10052 | break; | |
10053 | if (section_nr >= dwp_file->num_sections) | |
10054 | { | |
10055 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
10056 | " [in module %s]"), | |
10057 | dwp_file->name); | |
10058 | } | |
10059 | ||
10060 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 10061 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
10062 | { |
10063 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
10064 | " [in module %s]"), | |
10065 | dwp_file->name); | |
10066 | } | |
10067 | } | |
10068 | ||
10069 | if (i < 2 | |
a32a8923 DE |
10070 | || dwarf2_section_empty_p (§ions.info_or_types) |
10071 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
10072 | { |
10073 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
10074 | " [in module %s]"), | |
10075 | dwp_file->name); | |
10076 | } | |
73869dc2 | 10077 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
10078 | { |
10079 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
10080 | " [in module %s]"), | |
10081 | dwp_file->name); | |
10082 | } | |
10083 | ||
10084 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10085 | have dwo_unit "live" in that. At least for now. | |
10086 | ||
10087 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 10088 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
10089 | file, we can combine them back into a virtual DWO file to save space |
10090 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
10091 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
10092 | ||
2792b94d PM |
10093 | virtual_dwo_name = |
10094 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
a32a8923 DE |
10095 | get_section_id (§ions.abbrev), |
10096 | get_section_id (§ions.line), | |
10097 | get_section_id (§ions.loc), | |
10098 | get_section_id (§ions.str_offsets)); | |
80626a55 DE |
10099 | make_cleanup (xfree, virtual_dwo_name); |
10100 | /* Can we use an existing virtual DWO file? */ | |
0ac5b59e | 10101 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); |
80626a55 DE |
10102 | /* Create one if necessary. */ |
10103 | if (*dwo_file_slot == NULL) | |
10104 | { | |
b4f54984 | 10105 | if (dwarf_read_debug) |
80626a55 DE |
10106 | { |
10107 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10108 | virtual_dwo_name); | |
10109 | } | |
10110 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10111 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, |
10112 | virtual_dwo_name, | |
10113 | strlen (virtual_dwo_name)); | |
10114 | dwo_file->comp_dir = comp_dir; | |
80626a55 DE |
10115 | dwo_file->sections.abbrev = sections.abbrev; |
10116 | dwo_file->sections.line = sections.line; | |
10117 | dwo_file->sections.loc = sections.loc; | |
10118 | dwo_file->sections.macinfo = sections.macinfo; | |
10119 | dwo_file->sections.macro = sections.macro; | |
10120 | dwo_file->sections.str_offsets = sections.str_offsets; | |
10121 | /* The "str" section is global to the entire DWP file. */ | |
10122 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 10123 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
10124 | there's no need to record it in dwo_file. |
10125 | Also, we can't simply record type sections in dwo_file because | |
10126 | we record a pointer into the vector in dwo_unit. As we collect more | |
10127 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
10128 | for it, invalidating all copies of pointers into the previous |
10129 | contents. */ | |
80626a55 DE |
10130 | *dwo_file_slot = dwo_file; |
10131 | } | |
10132 | else | |
10133 | { | |
b4f54984 | 10134 | if (dwarf_read_debug) |
80626a55 DE |
10135 | { |
10136 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10137 | virtual_dwo_name); | |
10138 | } | |
10139 | dwo_file = *dwo_file_slot; | |
10140 | } | |
10141 | do_cleanups (cleanups); | |
10142 | ||
10143 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10144 | dwo_unit->dwo_file = dwo_file; | |
10145 | dwo_unit->signature = signature; | |
8a0459fd DE |
10146 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, |
10147 | sizeof (struct dwarf2_section_info)); | |
10148 | *dwo_unit->section = sections.info_or_types; | |
57d63ce2 | 10149 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
10150 | |
10151 | return dwo_unit; | |
10152 | } | |
10153 | ||
73869dc2 DE |
10154 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
10155 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
10156 | piece within that section used by a TU/CU, return a virtual section | |
10157 | of just that piece. */ | |
10158 | ||
10159 | static struct dwarf2_section_info | |
10160 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
10161 | bfd_size_type offset, bfd_size_type size) | |
10162 | { | |
10163 | struct dwarf2_section_info result; | |
10164 | asection *sectp; | |
10165 | ||
10166 | gdb_assert (section != NULL); | |
10167 | gdb_assert (!section->is_virtual); | |
10168 | ||
10169 | memset (&result, 0, sizeof (result)); | |
10170 | result.s.containing_section = section; | |
10171 | result.is_virtual = 1; | |
10172 | ||
10173 | if (size == 0) | |
10174 | return result; | |
10175 | ||
10176 | sectp = get_section_bfd_section (section); | |
10177 | ||
10178 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
10179 | bounds of the real section. This is a pretty-rare event, so just | |
10180 | flag an error (easier) instead of a warning and trying to cope. */ | |
10181 | if (sectp == NULL | |
10182 | || offset + size > bfd_get_section_size (sectp)) | |
10183 | { | |
10184 | bfd *abfd = sectp->owner; | |
10185 | ||
10186 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" | |
10187 | " in section %s [in module %s]"), | |
10188 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
10189 | objfile_name (dwarf2_per_objfile->objfile)); | |
10190 | } | |
10191 | ||
10192 | result.virtual_offset = offset; | |
10193 | result.size = size; | |
10194 | return result; | |
10195 | } | |
10196 | ||
10197 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
10198 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
10199 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
10200 | This is for DWP version 2 files. */ | |
10201 | ||
10202 | static struct dwo_unit * | |
10203 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
10204 | uint32_t unit_index, | |
10205 | const char *comp_dir, | |
10206 | ULONGEST signature, int is_debug_types) | |
10207 | { | |
10208 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10209 | const struct dwp_hash_table *dwp_htab = | |
10210 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10211 | bfd *dbfd = dwp_file->dbfd; | |
10212 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10213 | struct dwo_file *dwo_file; | |
10214 | struct dwo_unit *dwo_unit; | |
10215 | struct virtual_v2_dwo_sections sections; | |
10216 | void **dwo_file_slot; | |
10217 | char *virtual_dwo_name; | |
10218 | struct dwarf2_section_info *cutu; | |
10219 | struct cleanup *cleanups; | |
10220 | int i; | |
10221 | ||
10222 | gdb_assert (dwp_file->version == 2); | |
10223 | ||
b4f54984 | 10224 | if (dwarf_read_debug) |
73869dc2 DE |
10225 | { |
10226 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
10227 | kind, | |
10228 | pulongest (unit_index), hex_string (signature), | |
10229 | dwp_file->name); | |
10230 | } | |
10231 | ||
10232 | /* Fetch the section offsets of this DWO unit. */ | |
10233 | ||
10234 | memset (§ions, 0, sizeof (sections)); | |
10235 | cleanups = make_cleanup (null_cleanup, 0); | |
10236 | ||
10237 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
10238 | { | |
10239 | uint32_t offset = read_4_bytes (dbfd, | |
10240 | dwp_htab->section_pool.v2.offsets | |
10241 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10242 | + i) | |
10243 | * sizeof (uint32_t))); | |
10244 | uint32_t size = read_4_bytes (dbfd, | |
10245 | dwp_htab->section_pool.v2.sizes | |
10246 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10247 | + i) | |
10248 | * sizeof (uint32_t))); | |
10249 | ||
10250 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
10251 | { | |
10252 | case DW_SECT_INFO: | |
10253 | case DW_SECT_TYPES: | |
10254 | sections.info_or_types_offset = offset; | |
10255 | sections.info_or_types_size = size; | |
10256 | break; | |
10257 | case DW_SECT_ABBREV: | |
10258 | sections.abbrev_offset = offset; | |
10259 | sections.abbrev_size = size; | |
10260 | break; | |
10261 | case DW_SECT_LINE: | |
10262 | sections.line_offset = offset; | |
10263 | sections.line_size = size; | |
10264 | break; | |
10265 | case DW_SECT_LOC: | |
10266 | sections.loc_offset = offset; | |
10267 | sections.loc_size = size; | |
10268 | break; | |
10269 | case DW_SECT_STR_OFFSETS: | |
10270 | sections.str_offsets_offset = offset; | |
10271 | sections.str_offsets_size = size; | |
10272 | break; | |
10273 | case DW_SECT_MACINFO: | |
10274 | sections.macinfo_offset = offset; | |
10275 | sections.macinfo_size = size; | |
10276 | break; | |
10277 | case DW_SECT_MACRO: | |
10278 | sections.macro_offset = offset; | |
10279 | sections.macro_size = size; | |
10280 | break; | |
10281 | } | |
10282 | } | |
10283 | ||
10284 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10285 | have dwo_unit "live" in that. At least for now. | |
10286 | ||
10287 | The DWP file can be made up of a random collection of CUs and TUs. | |
10288 | However, for each CU + set of TUs that came from the same original DWO | |
10289 | file, we can combine them back into a virtual DWO file to save space | |
10290 | (fewer struct dwo_file objects to allocate). Remember that for really | |
10291 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
10292 | ||
10293 | virtual_dwo_name = | |
10294 | xstrprintf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
10295 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
10296 | (long) (sections.line_size ? sections.line_offset : 0), | |
10297 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
10298 | (long) (sections.str_offsets_size | |
10299 | ? sections.str_offsets_offset : 0)); | |
10300 | make_cleanup (xfree, virtual_dwo_name); | |
10301 | /* Can we use an existing virtual DWO file? */ | |
10302 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); | |
10303 | /* Create one if necessary. */ | |
10304 | if (*dwo_file_slot == NULL) | |
10305 | { | |
b4f54984 | 10306 | if (dwarf_read_debug) |
73869dc2 DE |
10307 | { |
10308 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10309 | virtual_dwo_name); | |
10310 | } | |
10311 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
10312 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, | |
10313 | virtual_dwo_name, | |
10314 | strlen (virtual_dwo_name)); | |
10315 | dwo_file->comp_dir = comp_dir; | |
10316 | dwo_file->sections.abbrev = | |
10317 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
10318 | sections.abbrev_offset, sections.abbrev_size); | |
10319 | dwo_file->sections.line = | |
10320 | create_dwp_v2_section (&dwp_file->sections.line, | |
10321 | sections.line_offset, sections.line_size); | |
10322 | dwo_file->sections.loc = | |
10323 | create_dwp_v2_section (&dwp_file->sections.loc, | |
10324 | sections.loc_offset, sections.loc_size); | |
10325 | dwo_file->sections.macinfo = | |
10326 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
10327 | sections.macinfo_offset, sections.macinfo_size); | |
10328 | dwo_file->sections.macro = | |
10329 | create_dwp_v2_section (&dwp_file->sections.macro, | |
10330 | sections.macro_offset, sections.macro_size); | |
10331 | dwo_file->sections.str_offsets = | |
10332 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
10333 | sections.str_offsets_offset, | |
10334 | sections.str_offsets_size); | |
10335 | /* The "str" section is global to the entire DWP file. */ | |
10336 | dwo_file->sections.str = dwp_file->sections.str; | |
10337 | /* The info or types section is assigned below to dwo_unit, | |
10338 | there's no need to record it in dwo_file. | |
10339 | Also, we can't simply record type sections in dwo_file because | |
10340 | we record a pointer into the vector in dwo_unit. As we collect more | |
10341 | types we'll grow the vector and eventually have to reallocate space | |
10342 | for it, invalidating all copies of pointers into the previous | |
10343 | contents. */ | |
10344 | *dwo_file_slot = dwo_file; | |
10345 | } | |
10346 | else | |
10347 | { | |
b4f54984 | 10348 | if (dwarf_read_debug) |
73869dc2 DE |
10349 | { |
10350 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10351 | virtual_dwo_name); | |
10352 | } | |
10353 | dwo_file = *dwo_file_slot; | |
10354 | } | |
10355 | do_cleanups (cleanups); | |
10356 | ||
10357 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10358 | dwo_unit->dwo_file = dwo_file; | |
10359 | dwo_unit->signature = signature; | |
10360 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, | |
10361 | sizeof (struct dwarf2_section_info)); | |
10362 | *dwo_unit->section = create_dwp_v2_section (is_debug_types | |
10363 | ? &dwp_file->sections.types | |
10364 | : &dwp_file->sections.info, | |
10365 | sections.info_or_types_offset, | |
10366 | sections.info_or_types_size); | |
10367 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
10368 | ||
10369 | return dwo_unit; | |
10370 | } | |
10371 | ||
57d63ce2 DE |
10372 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
10373 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
10374 | |
10375 | static struct dwo_unit * | |
57d63ce2 DE |
10376 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
10377 | ULONGEST signature, int is_debug_types) | |
80626a55 | 10378 | { |
57d63ce2 DE |
10379 | const struct dwp_hash_table *dwp_htab = |
10380 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 10381 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 10382 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
10383 | uint32_t hash = signature & mask; |
10384 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
10385 | unsigned int i; | |
10386 | void **slot; | |
10387 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
10388 | ||
10389 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
10390 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
10391 | slot = htab_find_slot (is_debug_types |
10392 | ? dwp_file->loaded_tus | |
10393 | : dwp_file->loaded_cus, | |
10394 | &find_dwo_cu, INSERT); | |
80626a55 DE |
10395 | |
10396 | if (*slot != NULL) | |
10397 | return *slot; | |
10398 | ||
10399 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 10400 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
10401 | { |
10402 | ULONGEST signature_in_table; | |
10403 | ||
10404 | signature_in_table = | |
57d63ce2 | 10405 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
10406 | if (signature_in_table == signature) |
10407 | { | |
57d63ce2 DE |
10408 | uint32_t unit_index = |
10409 | read_4_bytes (dbfd, | |
10410 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 10411 | |
73869dc2 DE |
10412 | if (dwp_file->version == 1) |
10413 | { | |
10414 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
10415 | comp_dir, signature, | |
10416 | is_debug_types); | |
10417 | } | |
10418 | else | |
10419 | { | |
10420 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
10421 | comp_dir, signature, | |
10422 | is_debug_types); | |
10423 | } | |
80626a55 DE |
10424 | return *slot; |
10425 | } | |
10426 | if (signature_in_table == 0) | |
10427 | return NULL; | |
10428 | hash = (hash + hash2) & mask; | |
10429 | } | |
10430 | ||
10431 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
10432 | " [in module %s]"), | |
10433 | dwp_file->name); | |
10434 | } | |
10435 | ||
ab5088bf | 10436 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
10437 | Open the file specified by FILE_NAME and hand it off to BFD for |
10438 | preliminary analysis. Return a newly initialized bfd *, which | |
10439 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 10440 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
10441 | SEARCH_CWD is true if the current directory is to be searched. |
10442 | It will be searched before debug-file-directory. | |
13aaf454 DE |
10443 | If successful, the file is added to the bfd include table of the |
10444 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 10445 | If unable to find/open the file, return NULL. |
3019eac3 DE |
10446 | NOTE: This function is derived from symfile_bfd_open. */ |
10447 | ||
10448 | static bfd * | |
6ac97d4c | 10449 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 DE |
10450 | { |
10451 | bfd *sym_bfd; | |
80626a55 | 10452 | int desc, flags; |
3019eac3 | 10453 | char *absolute_name; |
9c02c129 DE |
10454 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
10455 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
10456 | to debug_file_directory. */ | |
10457 | char *search_path; | |
10458 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
10459 | ||
6ac97d4c DE |
10460 | if (search_cwd) |
10461 | { | |
10462 | if (*debug_file_directory != '\0') | |
10463 | search_path = concat (".", dirname_separator_string, | |
10464 | debug_file_directory, NULL); | |
10465 | else | |
10466 | search_path = xstrdup ("."); | |
10467 | } | |
9c02c129 | 10468 | else |
6ac97d4c | 10469 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 10470 | |
492c0ab7 | 10471 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
10472 | if (is_dwp) |
10473 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 10474 | desc = openp (search_path, flags, file_name, |
3019eac3 | 10475 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 10476 | xfree (search_path); |
3019eac3 DE |
10477 | if (desc < 0) |
10478 | return NULL; | |
10479 | ||
bb397797 | 10480 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
a4453b7e | 10481 | xfree (absolute_name); |
9c02c129 DE |
10482 | if (sym_bfd == NULL) |
10483 | return NULL; | |
3019eac3 DE |
10484 | bfd_set_cacheable (sym_bfd, 1); |
10485 | ||
10486 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
10487 | { | |
cbb099e8 | 10488 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
10489 | return NULL; |
10490 | } | |
10491 | ||
13aaf454 DE |
10492 | /* Success. Record the bfd as having been included by the objfile's bfd. |
10493 | This is important because things like demangled_names_hash lives in the | |
10494 | objfile's per_bfd space and may have references to things like symbol | |
10495 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
10496 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd); | |
10497 | ||
3019eac3 DE |
10498 | return sym_bfd; |
10499 | } | |
10500 | ||
ab5088bf | 10501 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
10502 | COMP_DIR is the DW_AT_comp_dir attribute. |
10503 | The result is the bfd handle of the file. | |
10504 | If there is a problem finding or opening the file, return NULL. | |
10505 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10506 | same as symfile_bfd_open. */ | |
10507 | ||
10508 | static bfd * | |
ab5088bf | 10509 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 DE |
10510 | { |
10511 | bfd *abfd; | |
3019eac3 | 10512 | |
80626a55 | 10513 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 10514 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
10515 | |
10516 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
10517 | ||
10518 | if (comp_dir != NULL) | |
10519 | { | |
80626a55 | 10520 | char *path_to_try = concat (comp_dir, SLASH_STRING, file_name, NULL); |
3019eac3 DE |
10521 | |
10522 | /* NOTE: If comp_dir is a relative path, this will also try the | |
10523 | search path, which seems useful. */ | |
6ac97d4c | 10524 | abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10525 | xfree (path_to_try); |
10526 | if (abfd != NULL) | |
10527 | return abfd; | |
10528 | } | |
10529 | ||
10530 | /* That didn't work, try debug-file-directory, which, despite its name, | |
10531 | is a list of paths. */ | |
10532 | ||
10533 | if (*debug_file_directory == '\0') | |
10534 | return NULL; | |
10535 | ||
6ac97d4c | 10536 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10537 | } |
10538 | ||
80626a55 DE |
10539 | /* This function is mapped across the sections and remembers the offset and |
10540 | size of each of the DWO debugging sections we are interested in. */ | |
10541 | ||
10542 | static void | |
10543 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
10544 | { | |
10545 | struct dwo_sections *dwo_sections = dwo_sections_ptr; | |
10546 | const struct dwop_section_names *names = &dwop_section_names; | |
10547 | ||
10548 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10549 | { | |
73869dc2 | 10550 | dwo_sections->abbrev.s.asection = sectp; |
80626a55 DE |
10551 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
10552 | } | |
10553 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10554 | { | |
73869dc2 | 10555 | dwo_sections->info.s.asection = sectp; |
80626a55 DE |
10556 | dwo_sections->info.size = bfd_get_section_size (sectp); |
10557 | } | |
10558 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10559 | { | |
73869dc2 | 10560 | dwo_sections->line.s.asection = sectp; |
80626a55 DE |
10561 | dwo_sections->line.size = bfd_get_section_size (sectp); |
10562 | } | |
10563 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10564 | { | |
73869dc2 | 10565 | dwo_sections->loc.s.asection = sectp; |
80626a55 DE |
10566 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
10567 | } | |
10568 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10569 | { | |
73869dc2 | 10570 | dwo_sections->macinfo.s.asection = sectp; |
80626a55 DE |
10571 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
10572 | } | |
10573 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10574 | { | |
73869dc2 | 10575 | dwo_sections->macro.s.asection = sectp; |
80626a55 DE |
10576 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
10577 | } | |
10578 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
10579 | { | |
73869dc2 | 10580 | dwo_sections->str.s.asection = sectp; |
80626a55 DE |
10581 | dwo_sections->str.size = bfd_get_section_size (sectp); |
10582 | } | |
10583 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10584 | { | |
73869dc2 | 10585 | dwo_sections->str_offsets.s.asection = sectp; |
80626a55 DE |
10586 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
10587 | } | |
10588 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10589 | { | |
10590 | struct dwarf2_section_info type_section; | |
10591 | ||
10592 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 10593 | type_section.s.asection = sectp; |
80626a55 DE |
10594 | type_section.size = bfd_get_section_size (sectp); |
10595 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
10596 | &type_section); | |
10597 | } | |
10598 | } | |
10599 | ||
ab5088bf | 10600 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 10601 | by PER_CU. This is for the non-DWP case. |
80626a55 | 10602 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
10603 | |
10604 | static struct dwo_file * | |
0ac5b59e DE |
10605 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
10606 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
10607 | { |
10608 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10609 | struct dwo_file *dwo_file; |
10610 | bfd *dbfd; | |
3019eac3 DE |
10611 | struct cleanup *cleanups; |
10612 | ||
ab5088bf | 10613 | dbfd = open_dwo_file (dwo_name, comp_dir); |
80626a55 DE |
10614 | if (dbfd == NULL) |
10615 | { | |
b4f54984 | 10616 | if (dwarf_read_debug) |
80626a55 DE |
10617 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
10618 | return NULL; | |
10619 | } | |
10620 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10621 | dwo_file->dwo_name = dwo_name; |
10622 | dwo_file->comp_dir = comp_dir; | |
80626a55 | 10623 | dwo_file->dbfd = dbfd; |
3019eac3 DE |
10624 | |
10625 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
10626 | ||
80626a55 | 10627 | bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections); |
3019eac3 | 10628 | |
19c3d4c9 | 10629 | dwo_file->cu = create_dwo_cu (dwo_file); |
3019eac3 DE |
10630 | |
10631 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
10632 | dwo_file->sections.types); | |
10633 | ||
10634 | discard_cleanups (cleanups); | |
10635 | ||
b4f54984 | 10636 | if (dwarf_read_debug) |
80626a55 DE |
10637 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
10638 | ||
3019eac3 DE |
10639 | return dwo_file; |
10640 | } | |
10641 | ||
80626a55 | 10642 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
10643 | size of each of the DWP debugging sections common to version 1 and 2 that |
10644 | we are interested in. */ | |
3019eac3 | 10645 | |
80626a55 | 10646 | static void |
73869dc2 DE |
10647 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
10648 | void *dwp_file_ptr) | |
3019eac3 | 10649 | { |
80626a55 DE |
10650 | struct dwp_file *dwp_file = dwp_file_ptr; |
10651 | const struct dwop_section_names *names = &dwop_section_names; | |
10652 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 10653 | |
80626a55 | 10654 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 10655 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
10656 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
10657 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 10658 | |
80626a55 DE |
10659 | /* Look for specific sections that we need. */ |
10660 | if (section_is_p (sectp->name, &names->str_dwo)) | |
10661 | { | |
73869dc2 | 10662 | dwp_file->sections.str.s.asection = sectp; |
80626a55 DE |
10663 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
10664 | } | |
10665 | else if (section_is_p (sectp->name, &names->cu_index)) | |
10666 | { | |
73869dc2 | 10667 | dwp_file->sections.cu_index.s.asection = sectp; |
80626a55 DE |
10668 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
10669 | } | |
10670 | else if (section_is_p (sectp->name, &names->tu_index)) | |
10671 | { | |
73869dc2 | 10672 | dwp_file->sections.tu_index.s.asection = sectp; |
80626a55 DE |
10673 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
10674 | } | |
10675 | } | |
3019eac3 | 10676 | |
73869dc2 DE |
10677 | /* This function is mapped across the sections and remembers the offset and |
10678 | size of each of the DWP version 2 debugging sections that we are interested | |
10679 | in. This is split into a separate function because we don't know if we | |
10680 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
10681 | ||
10682 | static void | |
10683 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
10684 | { | |
10685 | struct dwp_file *dwp_file = dwp_file_ptr; | |
10686 | const struct dwop_section_names *names = &dwop_section_names; | |
10687 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
10688 | ||
10689 | /* Record the ELF section number for later lookup: this is what the | |
10690 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
10691 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
10692 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
10693 | ||
10694 | /* Look for specific sections that we need. */ | |
10695 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10696 | { | |
10697 | dwp_file->sections.abbrev.s.asection = sectp; | |
10698 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
10699 | } | |
10700 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10701 | { | |
10702 | dwp_file->sections.info.s.asection = sectp; | |
10703 | dwp_file->sections.info.size = bfd_get_section_size (sectp); | |
10704 | } | |
10705 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10706 | { | |
10707 | dwp_file->sections.line.s.asection = sectp; | |
10708 | dwp_file->sections.line.size = bfd_get_section_size (sectp); | |
10709 | } | |
10710 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10711 | { | |
10712 | dwp_file->sections.loc.s.asection = sectp; | |
10713 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); | |
10714 | } | |
10715 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10716 | { | |
10717 | dwp_file->sections.macinfo.s.asection = sectp; | |
10718 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); | |
10719 | } | |
10720 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10721 | { | |
10722 | dwp_file->sections.macro.s.asection = sectp; | |
10723 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); | |
10724 | } | |
10725 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10726 | { | |
10727 | dwp_file->sections.str_offsets.s.asection = sectp; | |
10728 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
10729 | } | |
10730 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10731 | { | |
10732 | dwp_file->sections.types.s.asection = sectp; | |
10733 | dwp_file->sections.types.size = bfd_get_section_size (sectp); | |
10734 | } | |
10735 | } | |
10736 | ||
80626a55 | 10737 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10738 | |
80626a55 DE |
10739 | static hashval_t |
10740 | hash_dwp_loaded_cutus (const void *item) | |
10741 | { | |
10742 | const struct dwo_unit *dwo_unit = item; | |
3019eac3 | 10743 | |
80626a55 DE |
10744 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
10745 | return dwo_unit->signature; | |
3019eac3 DE |
10746 | } |
10747 | ||
80626a55 | 10748 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10749 | |
80626a55 DE |
10750 | static int |
10751 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 10752 | { |
80626a55 DE |
10753 | const struct dwo_unit *dua = a; |
10754 | const struct dwo_unit *dub = b; | |
3019eac3 | 10755 | |
80626a55 DE |
10756 | return dua->signature == dub->signature; |
10757 | } | |
3019eac3 | 10758 | |
80626a55 | 10759 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10760 | |
80626a55 DE |
10761 | static htab_t |
10762 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
10763 | { | |
10764 | return htab_create_alloc_ex (3, | |
10765 | hash_dwp_loaded_cutus, | |
10766 | eq_dwp_loaded_cutus, | |
10767 | NULL, | |
10768 | &objfile->objfile_obstack, | |
10769 | hashtab_obstack_allocate, | |
10770 | dummy_obstack_deallocate); | |
10771 | } | |
3019eac3 | 10772 | |
ab5088bf DE |
10773 | /* Try to open DWP file FILE_NAME. |
10774 | The result is the bfd handle of the file. | |
10775 | If there is a problem finding or opening the file, return NULL. | |
10776 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10777 | same as symfile_bfd_open. */ | |
10778 | ||
10779 | static bfd * | |
10780 | open_dwp_file (const char *file_name) | |
10781 | { | |
6ac97d4c DE |
10782 | bfd *abfd; |
10783 | ||
10784 | abfd = try_open_dwop_file (file_name, 1 /*is_dwp*/, 1 /*search_cwd*/); | |
10785 | if (abfd != NULL) | |
10786 | return abfd; | |
10787 | ||
10788 | /* Work around upstream bug 15652. | |
10789 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
10790 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
10791 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
10792 | of the executable's path may have discarded the needed info. | |
10793 | [IWBN if the dwp file name was recorded in the executable, akin to | |
10794 | .gnu_debuglink, but that doesn't exist yet.] | |
10795 | Strip the directory from FILE_NAME and search again. */ | |
10796 | if (*debug_file_directory != '\0') | |
10797 | { | |
10798 | /* Don't implicitly search the current directory here. | |
10799 | If the user wants to search "." to handle this case, | |
10800 | it must be added to debug-file-directory. */ | |
10801 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
10802 | 0 /*search_cwd*/); | |
10803 | } | |
10804 | ||
10805 | return NULL; | |
ab5088bf DE |
10806 | } |
10807 | ||
80626a55 DE |
10808 | /* Initialize the use of the DWP file for the current objfile. |
10809 | By convention the name of the DWP file is ${objfile}.dwp. | |
10810 | The result is NULL if it can't be found. */ | |
a766d390 | 10811 | |
80626a55 | 10812 | static struct dwp_file * |
ab5088bf | 10813 | open_and_init_dwp_file (void) |
80626a55 DE |
10814 | { |
10815 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10816 | struct dwp_file *dwp_file; | |
10817 | char *dwp_name; | |
10818 | bfd *dbfd; | |
10819 | struct cleanup *cleanups; | |
10820 | ||
82bf32bc JK |
10821 | /* Try to find first .dwp for the binary file before any symbolic links |
10822 | resolving. */ | |
10823 | dwp_name = xstrprintf ("%s.dwp", objfile->original_name); | |
80626a55 DE |
10824 | cleanups = make_cleanup (xfree, dwp_name); |
10825 | ||
ab5088bf | 10826 | dbfd = open_dwp_file (dwp_name); |
82bf32bc JK |
10827 | if (dbfd == NULL |
10828 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
10829 | { | |
10830 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
10831 | dwp_name = xstrprintf ("%s.dwp", objfile_name (objfile)); | |
10832 | make_cleanup (xfree, dwp_name); | |
10833 | dbfd = open_dwp_file (dwp_name); | |
10834 | } | |
10835 | ||
80626a55 DE |
10836 | if (dbfd == NULL) |
10837 | { | |
b4f54984 | 10838 | if (dwarf_read_debug) |
80626a55 DE |
10839 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); |
10840 | do_cleanups (cleanups); | |
10841 | return NULL; | |
3019eac3 | 10842 | } |
80626a55 | 10843 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
93417882 | 10844 | dwp_file->name = bfd_get_filename (dbfd); |
80626a55 DE |
10845 | dwp_file->dbfd = dbfd; |
10846 | do_cleanups (cleanups); | |
c906108c | 10847 | |
80626a55 DE |
10848 | /* +1: section 0 is unused */ |
10849 | dwp_file->num_sections = bfd_count_sections (dbfd) + 1; | |
10850 | dwp_file->elf_sections = | |
10851 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
10852 | dwp_file->num_sections, asection *); | |
10853 | ||
73869dc2 | 10854 | bfd_map_over_sections (dbfd, dwarf2_locate_common_dwp_sections, dwp_file); |
80626a55 DE |
10855 | |
10856 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
10857 | ||
10858 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
10859 | ||
73869dc2 DE |
10860 | /* The DWP file version is stored in the hash table. Oh well. */ |
10861 | if (dwp_file->cus->version != dwp_file->tus->version) | |
10862 | { | |
10863 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 10864 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 10865 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
10866 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
10867 | " TU version %s [in DWP file %s]"), | |
10868 | pulongest (dwp_file->cus->version), | |
10869 | pulongest (dwp_file->tus->version), dwp_name); | |
73869dc2 DE |
10870 | } |
10871 | dwp_file->version = dwp_file->cus->version; | |
10872 | ||
10873 | if (dwp_file->version == 2) | |
10874 | bfd_map_over_sections (dbfd, dwarf2_locate_v2_dwp_sections, dwp_file); | |
10875 | ||
19ac8c2e DE |
10876 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
10877 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 10878 | |
b4f54984 | 10879 | if (dwarf_read_debug) |
80626a55 DE |
10880 | { |
10881 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
10882 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
10883 | " %s CUs, %s TUs\n", |
10884 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
10885 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
10886 | } |
10887 | ||
10888 | return dwp_file; | |
3019eac3 | 10889 | } |
c906108c | 10890 | |
ab5088bf DE |
10891 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
10892 | ||
10893 | static struct dwp_file * | |
10894 | get_dwp_file (void) | |
10895 | { | |
10896 | if (! dwarf2_per_objfile->dwp_checked) | |
10897 | { | |
10898 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
10899 | dwarf2_per_objfile->dwp_checked = 1; | |
10900 | } | |
10901 | return dwarf2_per_objfile->dwp_file; | |
10902 | } | |
10903 | ||
80626a55 DE |
10904 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
10905 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
10906 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 10907 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
10908 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
10909 | ||
10910 | This is called, for example, when wanting to read a variable with a | |
10911 | complex location. Therefore we don't want to do file i/o for every call. | |
10912 | Therefore we don't want to look for a DWO file on every call. | |
10913 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
10914 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
10915 | for a DWO file. | |
10916 | ||
1c658ad5 | 10917 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 10918 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 10919 | |
3019eac3 | 10920 | static struct dwo_unit * |
80626a55 DE |
10921 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
10922 | const char *dwo_name, const char *comp_dir, | |
10923 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
10924 | { |
10925 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10926 | const char *kind = is_debug_types ? "TU" : "CU"; |
10927 | void **dwo_file_slot; | |
3019eac3 | 10928 | struct dwo_file *dwo_file; |
80626a55 | 10929 | struct dwp_file *dwp_file; |
cb1df416 | 10930 | |
6a506a2d DE |
10931 | /* First see if there's a DWP file. |
10932 | If we have a DWP file but didn't find the DWO inside it, don't | |
10933 | look for the original DWO file. It makes gdb behave differently | |
10934 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 10935 | |
ab5088bf | 10936 | dwp_file = get_dwp_file (); |
80626a55 | 10937 | if (dwp_file != NULL) |
cf2c3c16 | 10938 | { |
80626a55 DE |
10939 | const struct dwp_hash_table *dwp_htab = |
10940 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10941 | ||
10942 | if (dwp_htab != NULL) | |
10943 | { | |
10944 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
10945 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
10946 | signature, is_debug_types); | |
80626a55 DE |
10947 | |
10948 | if (dwo_cutu != NULL) | |
10949 | { | |
b4f54984 | 10950 | if (dwarf_read_debug) |
80626a55 DE |
10951 | { |
10952 | fprintf_unfiltered (gdb_stdlog, | |
10953 | "Virtual DWO %s %s found: @%s\n", | |
10954 | kind, hex_string (signature), | |
10955 | host_address_to_string (dwo_cutu)); | |
10956 | } | |
10957 | return dwo_cutu; | |
10958 | } | |
10959 | } | |
10960 | } | |
6a506a2d | 10961 | else |
80626a55 | 10962 | { |
6a506a2d | 10963 | /* No DWP file, look for the DWO file. */ |
80626a55 | 10964 | |
6a506a2d DE |
10965 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
10966 | if (*dwo_file_slot == NULL) | |
80626a55 | 10967 | { |
6a506a2d DE |
10968 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
10969 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 10970 | } |
6a506a2d DE |
10971 | /* NOTE: This will be NULL if unable to open the file. */ |
10972 | dwo_file = *dwo_file_slot; | |
3019eac3 | 10973 | |
6a506a2d | 10974 | if (dwo_file != NULL) |
19c3d4c9 | 10975 | { |
6a506a2d DE |
10976 | struct dwo_unit *dwo_cutu = NULL; |
10977 | ||
10978 | if (is_debug_types && dwo_file->tus) | |
10979 | { | |
10980 | struct dwo_unit find_dwo_cutu; | |
10981 | ||
10982 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
10983 | find_dwo_cutu.signature = signature; | |
10984 | dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu); | |
10985 | } | |
10986 | else if (!is_debug_types && dwo_file->cu) | |
80626a55 | 10987 | { |
6a506a2d DE |
10988 | if (signature == dwo_file->cu->signature) |
10989 | dwo_cutu = dwo_file->cu; | |
10990 | } | |
10991 | ||
10992 | if (dwo_cutu != NULL) | |
10993 | { | |
b4f54984 | 10994 | if (dwarf_read_debug) |
6a506a2d DE |
10995 | { |
10996 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
10997 | kind, dwo_name, hex_string (signature), | |
10998 | host_address_to_string (dwo_cutu)); | |
10999 | } | |
11000 | return dwo_cutu; | |
80626a55 DE |
11001 | } |
11002 | } | |
2e276125 | 11003 | } |
9cdd5dbd | 11004 | |
80626a55 DE |
11005 | /* We didn't find it. This could mean a dwo_id mismatch, or |
11006 | someone deleted the DWO/DWP file, or the search path isn't set up | |
11007 | correctly to find the file. */ | |
11008 | ||
b4f54984 | 11009 | if (dwarf_read_debug) |
80626a55 DE |
11010 | { |
11011 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
11012 | kind, dwo_name, hex_string (signature)); | |
11013 | } | |
3019eac3 | 11014 | |
6656a72d DE |
11015 | /* This is a warning and not a complaint because it can be caused by |
11016 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
11017 | { |
11018 | /* Print the name of the DWP file if we looked there, helps the user | |
11019 | better diagnose the problem. */ | |
11020 | char *dwp_text = NULL; | |
11021 | struct cleanup *cleanups; | |
11022 | ||
11023 | if (dwp_file != NULL) | |
11024 | dwp_text = xstrprintf (" [in DWP file %s]", lbasename (dwp_file->name)); | |
11025 | cleanups = make_cleanup (xfree, dwp_text); | |
11026 | ||
11027 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset 0x%x" | |
11028 | " [in module %s]"), | |
11029 | kind, dwo_name, hex_string (signature), | |
11030 | dwp_text != NULL ? dwp_text : "", | |
11031 | this_unit->is_debug_types ? "TU" : "CU", | |
11032 | this_unit->offset.sect_off, objfile_name (objfile)); | |
11033 | ||
11034 | do_cleanups (cleanups); | |
11035 | } | |
3019eac3 | 11036 | return NULL; |
5fb290d7 DJ |
11037 | } |
11038 | ||
80626a55 DE |
11039 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
11040 | See lookup_dwo_cutu_unit for details. */ | |
11041 | ||
11042 | static struct dwo_unit * | |
11043 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
11044 | const char *dwo_name, const char *comp_dir, | |
11045 | ULONGEST signature) | |
11046 | { | |
11047 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
11048 | } | |
11049 | ||
11050 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
11051 | See lookup_dwo_cutu_unit for details. */ | |
11052 | ||
11053 | static struct dwo_unit * | |
11054 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
11055 | const char *dwo_name, const char *comp_dir) | |
11056 | { | |
11057 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
11058 | } | |
11059 | ||
89e63ee4 DE |
11060 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
11061 | ||
11062 | static int | |
11063 | queue_and_load_dwo_tu (void **slot, void *info) | |
11064 | { | |
11065 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
11066 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
11067 | ULONGEST signature = dwo_unit->signature; | |
11068 | struct signatured_type *sig_type = | |
11069 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
11070 | ||
11071 | if (sig_type != NULL) | |
11072 | { | |
11073 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
11074 | ||
11075 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
11076 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
11077 | while processing PER_CU. */ | |
11078 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
11079 | load_full_type_unit (sig_cu); | |
11080 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
11081 | } | |
11082 | ||
11083 | return 1; | |
11084 | } | |
11085 | ||
11086 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
11087 | The DWO may have the only definition of the type, though it may not be | |
11088 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
11089 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
11090 | ||
11091 | static void | |
11092 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
11093 | { | |
11094 | struct dwo_unit *dwo_unit; | |
11095 | struct dwo_file *dwo_file; | |
11096 | ||
11097 | gdb_assert (!per_cu->is_debug_types); | |
11098 | gdb_assert (get_dwp_file () == NULL); | |
11099 | gdb_assert (per_cu->cu != NULL); | |
11100 | ||
11101 | dwo_unit = per_cu->cu->dwo_unit; | |
11102 | gdb_assert (dwo_unit != NULL); | |
11103 | ||
11104 | dwo_file = dwo_unit->dwo_file; | |
11105 | if (dwo_file->tus != NULL) | |
11106 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
11107 | } | |
11108 | ||
3019eac3 DE |
11109 | /* Free all resources associated with DWO_FILE. |
11110 | Close the DWO file and munmap the sections. | |
11111 | All memory should be on the objfile obstack. */ | |
348e048f DE |
11112 | |
11113 | static void | |
3019eac3 | 11114 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 11115 | { |
3019eac3 DE |
11116 | int ix; |
11117 | struct dwarf2_section_info *section; | |
348e048f | 11118 | |
5c6fa7ab | 11119 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 11120 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 11121 | |
3019eac3 DE |
11122 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
11123 | } | |
348e048f | 11124 | |
3019eac3 | 11125 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 11126 | |
3019eac3 DE |
11127 | static void |
11128 | free_dwo_file_cleanup (void *arg) | |
11129 | { | |
11130 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
11131 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 11132 | |
3019eac3 DE |
11133 | free_dwo_file (dwo_file, objfile); |
11134 | } | |
348e048f | 11135 | |
3019eac3 | 11136 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 11137 | |
3019eac3 DE |
11138 | static int |
11139 | free_dwo_file_from_slot (void **slot, void *info) | |
11140 | { | |
11141 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
11142 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 11143 | |
3019eac3 | 11144 | free_dwo_file (dwo_file, objfile); |
348e048f | 11145 | |
3019eac3 DE |
11146 | return 1; |
11147 | } | |
348e048f | 11148 | |
3019eac3 | 11149 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 11150 | |
3019eac3 DE |
11151 | static void |
11152 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
11153 | { | |
11154 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 11155 | } |
3019eac3 DE |
11156 | \f |
11157 | /* Read in various DIEs. */ | |
348e048f | 11158 | |
d389af10 JK |
11159 | /* qsort helper for inherit_abstract_dies. */ |
11160 | ||
11161 | static int | |
11162 | unsigned_int_compar (const void *ap, const void *bp) | |
11163 | { | |
11164 | unsigned int a = *(unsigned int *) ap; | |
11165 | unsigned int b = *(unsigned int *) bp; | |
11166 | ||
11167 | return (a > b) - (b > a); | |
11168 | } | |
11169 | ||
11170 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
11171 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
11172 | already referenced by DW_AT_abstract_origin from the children of the | |
11173 | current DIE. */ | |
d389af10 JK |
11174 | |
11175 | static void | |
11176 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
11177 | { | |
11178 | struct die_info *child_die; | |
11179 | unsigned die_children_count; | |
11180 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
11181 | sect_offset *offsets; |
11182 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
11183 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
11184 | struct die_info *origin_die; | |
11185 | /* Iterator of the ORIGIN_DIE children. */ | |
11186 | struct die_info *origin_child_die; | |
11187 | struct cleanup *cleanups; | |
11188 | struct attribute *attr; | |
cd02d79d PA |
11189 | struct dwarf2_cu *origin_cu; |
11190 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
11191 | |
11192 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11193 | if (!attr) | |
11194 | return; | |
11195 | ||
cd02d79d PA |
11196 | /* Note that following die references may follow to a die in a |
11197 | different cu. */ | |
11198 | ||
11199 | origin_cu = cu; | |
11200 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
11201 | ||
11202 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
11203 | symbols in. */ | |
11204 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
11205 | origin_cu->list_in_scope = cu->list_in_scope; | |
11206 | ||
edb3359d DJ |
11207 | if (die->tag != origin_die->tag |
11208 | && !(die->tag == DW_TAG_inlined_subroutine | |
11209 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11210 | complaint (&symfile_complaints, |
11211 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 11212 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
11213 | |
11214 | child_die = die->child; | |
11215 | die_children_count = 0; | |
11216 | while (child_die && child_die->tag) | |
11217 | { | |
11218 | child_die = sibling_die (child_die); | |
11219 | die_children_count++; | |
11220 | } | |
11221 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
11222 | cleanups = make_cleanup (xfree, offsets); | |
11223 | ||
11224 | offsets_end = offsets; | |
3ea89b92 PMR |
11225 | for (child_die = die->child; |
11226 | child_die && child_die->tag; | |
11227 | child_die = sibling_die (child_die)) | |
11228 | { | |
11229 | struct die_info *child_origin_die; | |
11230 | struct dwarf2_cu *child_origin_cu; | |
11231 | ||
11232 | /* We are trying to process concrete instance entries: | |
11233 | DW_TAG_GNU_call_site DIEs indeed have a DW_AT_abstract_origin tag, but | |
11234 | it's not relevant to our analysis here. i.e. detecting DIEs that are | |
11235 | present in the abstract instance but not referenced in the concrete | |
11236 | one. */ | |
11237 | if (child_die->tag == DW_TAG_GNU_call_site) | |
11238 | continue; | |
11239 | ||
c38f313d DJ |
11240 | /* For each CHILD_DIE, find the corresponding child of |
11241 | ORIGIN_DIE. If there is more than one layer of | |
11242 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
11243 | but GCC versions at least through 4.4 generate this (GCC PR | |
11244 | 40573). */ | |
3ea89b92 PMR |
11245 | child_origin_die = child_die; |
11246 | child_origin_cu = cu; | |
c38f313d DJ |
11247 | while (1) |
11248 | { | |
cd02d79d PA |
11249 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
11250 | child_origin_cu); | |
c38f313d DJ |
11251 | if (attr == NULL) |
11252 | break; | |
cd02d79d PA |
11253 | child_origin_die = follow_die_ref (child_origin_die, attr, |
11254 | &child_origin_cu); | |
c38f313d DJ |
11255 | } |
11256 | ||
d389af10 JK |
11257 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
11258 | counterpart may exist. */ | |
c38f313d | 11259 | if (child_origin_die != child_die) |
d389af10 | 11260 | { |
edb3359d DJ |
11261 | if (child_die->tag != child_origin_die->tag |
11262 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
11263 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11264 | complaint (&symfile_complaints, |
11265 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11266 | "different tags"), child_die->offset.sect_off, |
11267 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11268 | if (child_origin_die->parent != origin_die) |
11269 | complaint (&symfile_complaints, | |
11270 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11271 | "different parents"), child_die->offset.sect_off, |
11272 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11273 | else |
11274 | *offsets_end++ = child_origin_die->offset; | |
d389af10 | 11275 | } |
d389af10 JK |
11276 | } |
11277 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
11278 | unsigned_int_compar); | |
11279 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 11280 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
11281 | complaint (&symfile_complaints, |
11282 | _("Multiple children of DIE 0x%x refer " | |
11283 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 11284 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
11285 | |
11286 | offsetp = offsets; | |
11287 | origin_child_die = origin_die->child; | |
11288 | while (origin_child_die && origin_child_die->tag) | |
11289 | { | |
11290 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
11291 | while (offsetp < offsets_end |
11292 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 11293 | offsetp++; |
b64f50a1 JK |
11294 | if (offsetp >= offsets_end |
11295 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 | 11296 | { |
adde2bff DE |
11297 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
11298 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
11299 | This can happen with mutually referenced abstract_origins. | |
11300 | PR 16581. */ | |
11301 | if (!origin_child_die->in_process) | |
11302 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
11303 | } |
11304 | origin_child_die = sibling_die (origin_child_die); | |
11305 | } | |
cd02d79d | 11306 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
11307 | |
11308 | do_cleanups (cleanups); | |
11309 | } | |
11310 | ||
c906108c | 11311 | static void |
e7c27a73 | 11312 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11313 | { |
e7c27a73 | 11314 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11315 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11316 | struct context_stack *newobj; |
c906108c SS |
11317 | CORE_ADDR lowpc; |
11318 | CORE_ADDR highpc; | |
11319 | struct die_info *child_die; | |
edb3359d | 11320 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 11321 | const char *name; |
e142c38c | 11322 | CORE_ADDR baseaddr; |
801e3a5b | 11323 | struct block *block; |
edb3359d | 11324 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
11325 | VEC (symbolp) *template_args = NULL; |
11326 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
11327 | |
11328 | if (inlined_func) | |
11329 | { | |
11330 | /* If we do not have call site information, we can't show the | |
11331 | caller of this inlined function. That's too confusing, so | |
11332 | only use the scope for local variables. */ | |
11333 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
11334 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
11335 | if (call_line == NULL || call_file == NULL) | |
11336 | { | |
11337 | read_lexical_block_scope (die, cu); | |
11338 | return; | |
11339 | } | |
11340 | } | |
c906108c | 11341 | |
e142c38c DJ |
11342 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
11343 | ||
94af9270 | 11344 | name = dwarf2_name (die, cu); |
c906108c | 11345 | |
e8d05480 JB |
11346 | /* Ignore functions with missing or empty names. These are actually |
11347 | illegal according to the DWARF standard. */ | |
11348 | if (name == NULL) | |
11349 | { | |
11350 | complaint (&symfile_complaints, | |
b64f50a1 JK |
11351 | _("missing name for subprogram DIE at %d"), |
11352 | die->offset.sect_off); | |
e8d05480 JB |
11353 | return; |
11354 | } | |
11355 | ||
11356 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
11357 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
11358 | { | |
ae4d0c03 PM |
11359 | attr = dwarf2_attr (die, DW_AT_external, cu); |
11360 | if (!attr || !DW_UNSND (attr)) | |
11361 | complaint (&symfile_complaints, | |
3e43a32a MS |
11362 | _("cannot get low and high bounds " |
11363 | "for subprogram DIE at %d"), | |
b64f50a1 | 11364 | die->offset.sect_off); |
e8d05480 JB |
11365 | return; |
11366 | } | |
c906108c | 11367 | |
3e29f34a MR |
11368 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11369 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 11370 | |
34eaf542 TT |
11371 | /* If we have any template arguments, then we must allocate a |
11372 | different sort of symbol. */ | |
11373 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
11374 | { | |
11375 | if (child_die->tag == DW_TAG_template_type_param | |
11376 | || child_die->tag == DW_TAG_template_value_param) | |
11377 | { | |
e623cf5d | 11378 | templ_func = allocate_template_symbol (objfile); |
34eaf542 TT |
11379 | templ_func->base.is_cplus_template_function = 1; |
11380 | break; | |
11381 | } | |
11382 | } | |
11383 | ||
fe978cb0 PA |
11384 | newobj = push_context (0, lowpc); |
11385 | newobj->name = new_symbol_full (die, read_type_die (die, cu), cu, | |
34eaf542 | 11386 | (struct symbol *) templ_func); |
4c2df51b | 11387 | |
4cecd739 DJ |
11388 | /* If there is a location expression for DW_AT_frame_base, record |
11389 | it. */ | |
e142c38c | 11390 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 11391 | if (attr) |
fe978cb0 | 11392 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 11393 | |
e142c38c | 11394 | cu->list_in_scope = &local_symbols; |
c906108c | 11395 | |
639d11d3 | 11396 | if (die->child != NULL) |
c906108c | 11397 | { |
639d11d3 | 11398 | child_die = die->child; |
c906108c SS |
11399 | while (child_die && child_die->tag) |
11400 | { | |
34eaf542 TT |
11401 | if (child_die->tag == DW_TAG_template_type_param |
11402 | || child_die->tag == DW_TAG_template_value_param) | |
11403 | { | |
11404 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
11405 | ||
f1078f66 DJ |
11406 | if (arg != NULL) |
11407 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
11408 | } |
11409 | else | |
11410 | process_die (child_die, cu); | |
c906108c SS |
11411 | child_die = sibling_die (child_die); |
11412 | } | |
11413 | } | |
11414 | ||
d389af10 JK |
11415 | inherit_abstract_dies (die, cu); |
11416 | ||
4a811a97 UW |
11417 | /* If we have a DW_AT_specification, we might need to import using |
11418 | directives from the context of the specification DIE. See the | |
11419 | comment in determine_prefix. */ | |
11420 | if (cu->language == language_cplus | |
11421 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
11422 | { | |
11423 | struct dwarf2_cu *spec_cu = cu; | |
11424 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
11425 | ||
11426 | while (spec_die) | |
11427 | { | |
11428 | child_die = spec_die->child; | |
11429 | while (child_die && child_die->tag) | |
11430 | { | |
11431 | if (child_die->tag == DW_TAG_imported_module) | |
11432 | process_die (child_die, spec_cu); | |
11433 | child_die = sibling_die (child_die); | |
11434 | } | |
11435 | ||
11436 | /* In some cases, GCC generates specification DIEs that | |
11437 | themselves contain DW_AT_specification attributes. */ | |
11438 | spec_die = die_specification (spec_die, &spec_cu); | |
11439 | } | |
11440 | } | |
11441 | ||
fe978cb0 | 11442 | newobj = pop_context (); |
c906108c | 11443 | /* Make a block for the local symbols within. */ |
fe978cb0 | 11444 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
4d663531 | 11445 | lowpc, highpc); |
801e3a5b | 11446 | |
df8a16a1 | 11447 | /* For C++, set the block's scope. */ |
195a3f6c | 11448 | if ((cu->language == language_cplus || cu->language == language_fortran) |
4d4ec4e5 | 11449 | && cu->processing_has_namespace_info) |
195a3f6c TT |
11450 | block_set_scope (block, determine_prefix (die, cu), |
11451 | &objfile->objfile_obstack); | |
df8a16a1 | 11452 | |
801e3a5b JB |
11453 | /* If we have address ranges, record them. */ |
11454 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 11455 | |
fe978cb0 | 11456 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 11457 | |
34eaf542 TT |
11458 | /* Attach template arguments to function. */ |
11459 | if (! VEC_empty (symbolp, template_args)) | |
11460 | { | |
11461 | gdb_assert (templ_func != NULL); | |
11462 | ||
11463 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
11464 | templ_func->template_arguments | |
11465 | = obstack_alloc (&objfile->objfile_obstack, | |
11466 | (templ_func->n_template_arguments | |
11467 | * sizeof (struct symbol *))); | |
11468 | memcpy (templ_func->template_arguments, | |
11469 | VEC_address (symbolp, template_args), | |
11470 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
11471 | VEC_free (symbolp, template_args); | |
11472 | } | |
11473 | ||
208d8187 JB |
11474 | /* In C++, we can have functions nested inside functions (e.g., when |
11475 | a function declares a class that has methods). This means that | |
11476 | when we finish processing a function scope, we may need to go | |
11477 | back to building a containing block's symbol lists. */ | |
fe978cb0 PA |
11478 | local_symbols = newobj->locals; |
11479 | using_directives = newobj->using_directives; | |
208d8187 | 11480 | |
921e78cf JB |
11481 | /* If we've finished processing a top-level function, subsequent |
11482 | symbols go in the file symbol list. */ | |
11483 | if (outermost_context_p ()) | |
e142c38c | 11484 | cu->list_in_scope = &file_symbols; |
c906108c SS |
11485 | } |
11486 | ||
11487 | /* Process all the DIES contained within a lexical block scope. Start | |
11488 | a new scope, process the dies, and then close the scope. */ | |
11489 | ||
11490 | static void | |
e7c27a73 | 11491 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11492 | { |
e7c27a73 | 11493 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11494 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11495 | struct context_stack *newobj; |
c906108c SS |
11496 | CORE_ADDR lowpc, highpc; |
11497 | struct die_info *child_die; | |
e142c38c DJ |
11498 | CORE_ADDR baseaddr; |
11499 | ||
11500 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
11501 | |
11502 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
11503 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
11504 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 11505 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 11506 | describe ranges. */ |
d85a05f0 | 11507 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c | 11508 | return; |
3e29f34a MR |
11509 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11510 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
11511 | |
11512 | push_context (0, lowpc); | |
639d11d3 | 11513 | if (die->child != NULL) |
c906108c | 11514 | { |
639d11d3 | 11515 | child_die = die->child; |
c906108c SS |
11516 | while (child_die && child_die->tag) |
11517 | { | |
e7c27a73 | 11518 | process_die (child_die, cu); |
c906108c SS |
11519 | child_die = sibling_die (child_die); |
11520 | } | |
11521 | } | |
3ea89b92 | 11522 | inherit_abstract_dies (die, cu); |
fe978cb0 | 11523 | newobj = pop_context (); |
c906108c | 11524 | |
8540c487 | 11525 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 11526 | { |
801e3a5b | 11527 | struct block *block |
fe978cb0 PA |
11528 | = finish_block (0, &local_symbols, newobj->old_blocks, |
11529 | newobj->start_addr, highpc); | |
801e3a5b JB |
11530 | |
11531 | /* Note that recording ranges after traversing children, as we | |
11532 | do here, means that recording a parent's ranges entails | |
11533 | walking across all its children's ranges as they appear in | |
11534 | the address map, which is quadratic behavior. | |
11535 | ||
11536 | It would be nicer to record the parent's ranges before | |
11537 | traversing its children, simply overriding whatever you find | |
11538 | there. But since we don't even decide whether to create a | |
11539 | block until after we've traversed its children, that's hard | |
11540 | to do. */ | |
11541 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 11542 | } |
fe978cb0 PA |
11543 | local_symbols = newobj->locals; |
11544 | using_directives = newobj->using_directives; | |
c906108c SS |
11545 | } |
11546 | ||
96408a79 SA |
11547 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
11548 | ||
11549 | static void | |
11550 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11551 | { | |
11552 | struct objfile *objfile = cu->objfile; | |
11553 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11554 | CORE_ADDR pc, baseaddr; | |
11555 | struct attribute *attr; | |
11556 | struct call_site *call_site, call_site_local; | |
11557 | void **slot; | |
11558 | int nparams; | |
11559 | struct die_info *child_die; | |
11560 | ||
11561 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
11562 | ||
11563 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
11564 | if (!attr) | |
11565 | { | |
11566 | complaint (&symfile_complaints, | |
11567 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
11568 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11569 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11570 | return; |
11571 | } | |
31aa7e4e | 11572 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 11573 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
11574 | |
11575 | if (cu->call_site_htab == NULL) | |
11576 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
11577 | NULL, &objfile->objfile_obstack, | |
11578 | hashtab_obstack_allocate, NULL); | |
11579 | call_site_local.pc = pc; | |
11580 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
11581 | if (*slot != NULL) | |
11582 | { | |
11583 | complaint (&symfile_complaints, | |
11584 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
11585 | "DIE 0x%x [in module %s]"), | |
4262abfb JK |
11586 | paddress (gdbarch, pc), die->offset.sect_off, |
11587 | objfile_name (objfile)); | |
96408a79 SA |
11588 | return; |
11589 | } | |
11590 | ||
11591 | /* Count parameters at the caller. */ | |
11592 | ||
11593 | nparams = 0; | |
11594 | for (child_die = die->child; child_die && child_die->tag; | |
11595 | child_die = sibling_die (child_die)) | |
11596 | { | |
11597 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11598 | { | |
11599 | complaint (&symfile_complaints, | |
11600 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
11601 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb JK |
11602 | child_die->tag, child_die->offset.sect_off, |
11603 | objfile_name (objfile)); | |
96408a79 SA |
11604 | continue; |
11605 | } | |
11606 | ||
11607 | nparams++; | |
11608 | } | |
11609 | ||
11610 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
11611 | (sizeof (*call_site) | |
11612 | + (sizeof (*call_site->parameter) | |
11613 | * (nparams - 1)))); | |
11614 | *slot = call_site; | |
11615 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
11616 | call_site->pc = pc; | |
11617 | ||
11618 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
11619 | { | |
11620 | struct die_info *func_die; | |
11621 | ||
11622 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
11623 | for (func_die = die->parent; | |
11624 | func_die && func_die->tag != DW_TAG_subprogram | |
11625 | && func_die->tag != DW_TAG_subroutine_type; | |
11626 | func_die = func_die->parent); | |
11627 | ||
11628 | /* DW_AT_GNU_all_call_sites is a superset | |
11629 | of DW_AT_GNU_all_tail_call_sites. */ | |
11630 | if (func_die | |
11631 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
11632 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
11633 | { | |
11634 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
11635 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
11636 | both the initial caller containing the real return address PC and | |
11637 | the final callee containing the current PC of a chain of tail | |
11638 | calls do not need to have the tail call list complete. But any | |
11639 | function candidate for a virtual tail call frame searched via | |
11640 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
11641 | determined unambiguously. */ | |
11642 | } | |
11643 | else | |
11644 | { | |
11645 | struct type *func_type = NULL; | |
11646 | ||
11647 | if (func_die) | |
11648 | func_type = get_die_type (func_die, cu); | |
11649 | if (func_type != NULL) | |
11650 | { | |
11651 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
11652 | ||
11653 | /* Enlist this call site to the function. */ | |
11654 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
11655 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
11656 | } | |
11657 | else | |
11658 | complaint (&symfile_complaints, | |
11659 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
11660 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11661 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11662 | } |
11663 | } | |
11664 | ||
11665 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
11666 | if (attr == NULL) | |
11667 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11668 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
11669 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
11670 | /* Keep NULL DWARF_BLOCK. */; | |
11671 | else if (attr_form_is_block (attr)) | |
11672 | { | |
11673 | struct dwarf2_locexpr_baton *dlbaton; | |
11674 | ||
11675 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
11676 | dlbaton->data = DW_BLOCK (attr)->data; | |
11677 | dlbaton->size = DW_BLOCK (attr)->size; | |
11678 | dlbaton->per_cu = cu->per_cu; | |
11679 | ||
11680 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
11681 | } | |
7771576e | 11682 | else if (attr_form_is_ref (attr)) |
96408a79 | 11683 | { |
96408a79 SA |
11684 | struct dwarf2_cu *target_cu = cu; |
11685 | struct die_info *target_die; | |
11686 | ||
ac9ec31b | 11687 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
11688 | gdb_assert (target_cu->objfile == objfile); |
11689 | if (die_is_declaration (target_die, target_cu)) | |
11690 | { | |
9112db09 JK |
11691 | const char *target_physname = NULL; |
11692 | struct attribute *target_attr; | |
11693 | ||
11694 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
11695 | target_attr = dwarf2_attr (target_die, DW_AT_linkage_name, target_cu); | |
11696 | if (target_attr == NULL) | |
11697 | target_attr = dwarf2_attr (target_die, DW_AT_MIPS_linkage_name, | |
11698 | target_cu); | |
11699 | if (target_attr != NULL && DW_STRING (target_attr) != NULL) | |
11700 | target_physname = DW_STRING (target_attr); | |
11701 | else | |
11702 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
96408a79 SA |
11703 | if (target_physname == NULL) |
11704 | complaint (&symfile_complaints, | |
11705 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11706 | "physname, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11707 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11708 | else |
7d455152 | 11709 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
11710 | } |
11711 | else | |
11712 | { | |
11713 | CORE_ADDR lowpc; | |
11714 | ||
11715 | /* DW_AT_entry_pc should be preferred. */ | |
11716 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
11717 | complaint (&symfile_complaints, | |
11718 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11719 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11720 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11721 | else |
3e29f34a MR |
11722 | { |
11723 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
11724 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
11725 | } | |
96408a79 SA |
11726 | } |
11727 | } | |
11728 | else | |
11729 | complaint (&symfile_complaints, | |
11730 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
11731 | "block nor reference, for DIE 0x%x [in module %s]"), | |
4262abfb | 11732 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11733 | |
11734 | call_site->per_cu = cu->per_cu; | |
11735 | ||
11736 | for (child_die = die->child; | |
11737 | child_die && child_die->tag; | |
11738 | child_die = sibling_die (child_die)) | |
11739 | { | |
96408a79 | 11740 | struct call_site_parameter *parameter; |
1788b2d3 | 11741 | struct attribute *loc, *origin; |
96408a79 SA |
11742 | |
11743 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11744 | { | |
11745 | /* Already printed the complaint above. */ | |
11746 | continue; | |
11747 | } | |
11748 | ||
11749 | gdb_assert (call_site->parameter_count < nparams); | |
11750 | parameter = &call_site->parameter[call_site->parameter_count]; | |
11751 | ||
1788b2d3 JK |
11752 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
11753 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
11754 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 11755 | |
24c5c679 | 11756 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 | 11757 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
7771576e | 11758 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 JK |
11759 | { |
11760 | sect_offset offset; | |
11761 | ||
11762 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
11763 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
11764 | if (!offset_in_cu_p (&cu->header, offset)) |
11765 | { | |
11766 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
11767 | binding can be done only inside one CU. Such referenced DIE | |
11768 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
11769 | complaint (&symfile_complaints, | |
11770 | _("DW_AT_abstract_origin offset is not in CU for " | |
11771 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11772 | "[in module %s]"), | |
4262abfb | 11773 | child_die->offset.sect_off, objfile_name (objfile)); |
d76b7dbc JK |
11774 | continue; |
11775 | } | |
1788b2d3 JK |
11776 | parameter->u.param_offset.cu_off = (offset.sect_off |
11777 | - cu->header.offset.sect_off); | |
11778 | } | |
11779 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
11780 | { |
11781 | complaint (&symfile_complaints, | |
11782 | _("No DW_FORM_block* DW_AT_location for " | |
11783 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11784 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11785 | continue; |
11786 | } | |
24c5c679 | 11787 | else |
96408a79 | 11788 | { |
24c5c679 JK |
11789 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
11790 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
11791 | if (parameter->u.dwarf_reg != -1) | |
11792 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
11793 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
11794 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
11795 | ¶meter->u.fb_offset)) | |
11796 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
11797 | else | |
11798 | { | |
11799 | complaint (&symfile_complaints, | |
11800 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
11801 | "for DW_FORM_block* DW_AT_location is supported for " | |
11802 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11803 | "[in module %s]"), | |
4262abfb | 11804 | child_die->offset.sect_off, objfile_name (objfile)); |
24c5c679 JK |
11805 | continue; |
11806 | } | |
96408a79 SA |
11807 | } |
11808 | ||
11809 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
11810 | if (!attr_form_is_block (attr)) | |
11811 | { | |
11812 | complaint (&symfile_complaints, | |
11813 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
11814 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11815 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11816 | continue; |
11817 | } | |
11818 | parameter->value = DW_BLOCK (attr)->data; | |
11819 | parameter->value_size = DW_BLOCK (attr)->size; | |
11820 | ||
11821 | /* Parameters are not pre-cleared by memset above. */ | |
11822 | parameter->data_value = NULL; | |
11823 | parameter->data_value_size = 0; | |
11824 | call_site->parameter_count++; | |
11825 | ||
11826 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
11827 | if (attr) | |
11828 | { | |
11829 | if (!attr_form_is_block (attr)) | |
11830 | complaint (&symfile_complaints, | |
11831 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
11832 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11833 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11834 | else |
11835 | { | |
11836 | parameter->data_value = DW_BLOCK (attr)->data; | |
11837 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
11838 | } | |
11839 | } | |
11840 | } | |
11841 | } | |
11842 | ||
43039443 | 11843 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
11844 | Return 1 if the attributes are present and valid, otherwise, return 0. |
11845 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
11846 | |
11847 | static int | |
11848 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
11849 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
11850 | struct partial_symtab *ranges_pst) | |
43039443 JK |
11851 | { |
11852 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 11853 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
43039443 JK |
11854 | struct comp_unit_head *cu_header = &cu->header; |
11855 | bfd *obfd = objfile->obfd; | |
11856 | unsigned int addr_size = cu_header->addr_size; | |
11857 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11858 | /* Base address selection entry. */ | |
11859 | CORE_ADDR base; | |
11860 | int found_base; | |
11861 | unsigned int dummy; | |
d521ce57 | 11862 | const gdb_byte *buffer; |
43039443 JK |
11863 | CORE_ADDR marker; |
11864 | int low_set; | |
11865 | CORE_ADDR low = 0; | |
11866 | CORE_ADDR high = 0; | |
ff013f42 | 11867 | CORE_ADDR baseaddr; |
43039443 | 11868 | |
d00adf39 DE |
11869 | found_base = cu->base_known; |
11870 | base = cu->base_address; | |
43039443 | 11871 | |
be391dca | 11872 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11873 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
11874 | { |
11875 | complaint (&symfile_complaints, | |
11876 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
11877 | offset); | |
11878 | return 0; | |
11879 | } | |
dce234bc | 11880 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
11881 | |
11882 | /* Read in the largest possible address. */ | |
11883 | marker = read_address (obfd, buffer, cu, &dummy); | |
11884 | if ((marker & mask) == mask) | |
11885 | { | |
11886 | /* If we found the largest possible address, then | |
11887 | read the base address. */ | |
11888 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11889 | buffer += 2 * addr_size; | |
11890 | offset += 2 * addr_size; | |
11891 | found_base = 1; | |
11892 | } | |
11893 | ||
11894 | low_set = 0; | |
11895 | ||
e7030f15 | 11896 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 11897 | |
43039443 JK |
11898 | while (1) |
11899 | { | |
11900 | CORE_ADDR range_beginning, range_end; | |
11901 | ||
11902 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
11903 | buffer += addr_size; | |
11904 | range_end = read_address (obfd, buffer, cu, &dummy); | |
11905 | buffer += addr_size; | |
11906 | offset += 2 * addr_size; | |
11907 | ||
11908 | /* An end of list marker is a pair of zero addresses. */ | |
11909 | if (range_beginning == 0 && range_end == 0) | |
11910 | /* Found the end of list entry. */ | |
11911 | break; | |
11912 | ||
11913 | /* Each base address selection entry is a pair of 2 values. | |
11914 | The first is the largest possible address, the second is | |
11915 | the base address. Check for a base address here. */ | |
11916 | if ((range_beginning & mask) == mask) | |
11917 | { | |
11918 | /* If we found the largest possible address, then | |
11919 | read the base address. */ | |
11920 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11921 | found_base = 1; | |
11922 | continue; | |
11923 | } | |
11924 | ||
11925 | if (!found_base) | |
11926 | { | |
11927 | /* We have no valid base address for the ranges | |
11928 | data. */ | |
11929 | complaint (&symfile_complaints, | |
11930 | _("Invalid .debug_ranges data (no base address)")); | |
11931 | return 0; | |
11932 | } | |
11933 | ||
9277c30c UW |
11934 | if (range_beginning > range_end) |
11935 | { | |
11936 | /* Inverted range entries are invalid. */ | |
11937 | complaint (&symfile_complaints, | |
11938 | _("Invalid .debug_ranges data (inverted range)")); | |
11939 | return 0; | |
11940 | } | |
11941 | ||
11942 | /* Empty range entries have no effect. */ | |
11943 | if (range_beginning == range_end) | |
11944 | continue; | |
11945 | ||
43039443 JK |
11946 | range_beginning += base; |
11947 | range_end += base; | |
11948 | ||
01093045 DE |
11949 | /* A not-uncommon case of bad debug info. |
11950 | Don't pollute the addrmap with bad data. */ | |
11951 | if (range_beginning + baseaddr == 0 | |
11952 | && !dwarf2_per_objfile->has_section_at_zero) | |
11953 | { | |
11954 | complaint (&symfile_complaints, | |
11955 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11956 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11957 | continue; |
11958 | } | |
11959 | ||
9277c30c | 11960 | if (ranges_pst != NULL) |
3e29f34a MR |
11961 | { |
11962 | CORE_ADDR lowpc; | |
11963 | CORE_ADDR highpc; | |
11964 | ||
11965 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
11966 | range_beginning + baseaddr); | |
11967 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
11968 | range_end + baseaddr); | |
11969 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
11970 | ranges_pst); | |
11971 | } | |
ff013f42 | 11972 | |
43039443 JK |
11973 | /* FIXME: This is recording everything as a low-high |
11974 | segment of consecutive addresses. We should have a | |
11975 | data structure for discontiguous block ranges | |
11976 | instead. */ | |
11977 | if (! low_set) | |
11978 | { | |
11979 | low = range_beginning; | |
11980 | high = range_end; | |
11981 | low_set = 1; | |
11982 | } | |
11983 | else | |
11984 | { | |
11985 | if (range_beginning < low) | |
11986 | low = range_beginning; | |
11987 | if (range_end > high) | |
11988 | high = range_end; | |
11989 | } | |
11990 | } | |
11991 | ||
11992 | if (! low_set) | |
11993 | /* If the first entry is an end-of-list marker, the range | |
11994 | describes an empty scope, i.e. no instructions. */ | |
11995 | return 0; | |
11996 | ||
11997 | if (low_return) | |
11998 | *low_return = low; | |
11999 | if (high_return) | |
12000 | *high_return = high; | |
12001 | return 1; | |
12002 | } | |
12003 | ||
af34e669 DJ |
12004 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
12005 | are present and valid, otherwise, return 0. Return -1 if the range is | |
12006 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 12007 | |
c906108c | 12008 | static int |
af34e669 | 12009 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
12010 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
12011 | struct partial_symtab *pst) | |
c906108c SS |
12012 | { |
12013 | struct attribute *attr; | |
91da1414 | 12014 | struct attribute *attr_high; |
af34e669 DJ |
12015 | CORE_ADDR low = 0; |
12016 | CORE_ADDR high = 0; | |
12017 | int ret = 0; | |
c906108c | 12018 | |
91da1414 MW |
12019 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12020 | if (attr_high) | |
af34e669 | 12021 | { |
e142c38c | 12022 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 12023 | if (attr) |
91da1414 | 12024 | { |
31aa7e4e JB |
12025 | low = attr_value_as_address (attr); |
12026 | high = attr_value_as_address (attr_high); | |
12027 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12028 | high += low; | |
91da1414 | 12029 | } |
af34e669 DJ |
12030 | else |
12031 | /* Found high w/o low attribute. */ | |
12032 | return 0; | |
12033 | ||
12034 | /* Found consecutive range of addresses. */ | |
12035 | ret = 1; | |
12036 | } | |
c906108c | 12037 | else |
af34e669 | 12038 | { |
e142c38c | 12039 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
12040 | if (attr != NULL) |
12041 | { | |
ab435259 DE |
12042 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12043 | We take advantage of the fact that DW_AT_ranges does not appear | |
12044 | in DW_TAG_compile_unit of DWO files. */ | |
12045 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
12046 | unsigned int ranges_offset = (DW_UNSND (attr) | |
12047 | + (need_ranges_base | |
12048 | ? cu->ranges_base | |
12049 | : 0)); | |
2e3cf129 | 12050 | |
af34e669 | 12051 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 12052 | .debug_ranges section. */ |
2e3cf129 | 12053 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 12054 | return 0; |
43039443 | 12055 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
12056 | ret = -1; |
12057 | } | |
12058 | } | |
c906108c | 12059 | |
9373cf26 JK |
12060 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
12061 | if (high <= low) | |
c906108c SS |
12062 | return 0; |
12063 | ||
12064 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
12065 | eliminate duplicate copies of functions and vtables and such. | |
12066 | The linker will arbitrarily choose one and discard the others. | |
12067 | The AT_*_pc values for such functions refer to local labels in | |
12068 | these sections. If the section from that file was discarded, the | |
12069 | labels are not in the output, so the relocs get a value of 0. | |
12070 | If this is a discarded function, mark the pc bounds as invalid, | |
12071 | so that GDB will ignore it. */ | |
72dca2f5 | 12072 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
12073 | return 0; |
12074 | ||
12075 | *lowpc = low; | |
96408a79 SA |
12076 | if (highpc) |
12077 | *highpc = high; | |
af34e669 | 12078 | return ret; |
c906108c SS |
12079 | } |
12080 | ||
b084d499 JB |
12081 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
12082 | its low and high PC addresses. Do nothing if these addresses could not | |
12083 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
12084 | and HIGHPC to the high address if greater than HIGHPC. */ | |
12085 | ||
12086 | static void | |
12087 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
12088 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12089 | struct dwarf2_cu *cu) | |
12090 | { | |
12091 | CORE_ADDR low, high; | |
12092 | struct die_info *child = die->child; | |
12093 | ||
d85a05f0 | 12094 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
12095 | { |
12096 | *lowpc = min (*lowpc, low); | |
12097 | *highpc = max (*highpc, high); | |
12098 | } | |
12099 | ||
12100 | /* If the language does not allow nested subprograms (either inside | |
12101 | subprograms or lexical blocks), we're done. */ | |
12102 | if (cu->language != language_ada) | |
12103 | return; | |
6e70227d | 12104 | |
b084d499 JB |
12105 | /* Check all the children of the given DIE. If it contains nested |
12106 | subprograms, then check their pc bounds. Likewise, we need to | |
12107 | check lexical blocks as well, as they may also contain subprogram | |
12108 | definitions. */ | |
12109 | while (child && child->tag) | |
12110 | { | |
12111 | if (child->tag == DW_TAG_subprogram | |
12112 | || child->tag == DW_TAG_lexical_block) | |
12113 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
12114 | child = sibling_die (child); | |
12115 | } | |
12116 | } | |
12117 | ||
fae299cd DC |
12118 | /* Get the low and high pc's represented by the scope DIE, and store |
12119 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
12120 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
12121 | ||
12122 | static void | |
12123 | get_scope_pc_bounds (struct die_info *die, | |
12124 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12125 | struct dwarf2_cu *cu) | |
12126 | { | |
12127 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
12128 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
12129 | CORE_ADDR current_low, current_high; | |
12130 | ||
d85a05f0 | 12131 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
12132 | { |
12133 | best_low = current_low; | |
12134 | best_high = current_high; | |
12135 | } | |
12136 | else | |
12137 | { | |
12138 | struct die_info *child = die->child; | |
12139 | ||
12140 | while (child && child->tag) | |
12141 | { | |
12142 | switch (child->tag) { | |
12143 | case DW_TAG_subprogram: | |
b084d499 | 12144 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
12145 | break; |
12146 | case DW_TAG_namespace: | |
f55ee35c | 12147 | case DW_TAG_module: |
fae299cd DC |
12148 | /* FIXME: carlton/2004-01-16: Should we do this for |
12149 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
12150 | that current GCC's always emit the DIEs corresponding | |
12151 | to definitions of methods of classes as children of a | |
12152 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
12153 | the DIEs giving the declarations, which could be | |
12154 | anywhere). But I don't see any reason why the | |
12155 | standards says that they have to be there. */ | |
12156 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
12157 | ||
12158 | if (current_low != ((CORE_ADDR) -1)) | |
12159 | { | |
12160 | best_low = min (best_low, current_low); | |
12161 | best_high = max (best_high, current_high); | |
12162 | } | |
12163 | break; | |
12164 | default: | |
0963b4bd | 12165 | /* Ignore. */ |
fae299cd DC |
12166 | break; |
12167 | } | |
12168 | ||
12169 | child = sibling_die (child); | |
12170 | } | |
12171 | } | |
12172 | ||
12173 | *lowpc = best_low; | |
12174 | *highpc = best_high; | |
12175 | } | |
12176 | ||
801e3a5b JB |
12177 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
12178 | in DIE. */ | |
380bca97 | 12179 | |
801e3a5b JB |
12180 | static void |
12181 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
12182 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
12183 | { | |
bb5ed363 | 12184 | struct objfile *objfile = cu->objfile; |
3e29f34a | 12185 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 12186 | struct attribute *attr; |
91da1414 | 12187 | struct attribute *attr_high; |
801e3a5b | 12188 | |
91da1414 MW |
12189 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12190 | if (attr_high) | |
801e3a5b | 12191 | { |
801e3a5b JB |
12192 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
12193 | if (attr) | |
12194 | { | |
31aa7e4e JB |
12195 | CORE_ADDR low = attr_value_as_address (attr); |
12196 | CORE_ADDR high = attr_value_as_address (attr_high); | |
12197 | ||
12198 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12199 | high += low; | |
9a619af0 | 12200 | |
3e29f34a MR |
12201 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
12202 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
12203 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
12204 | } |
12205 | } | |
12206 | ||
12207 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
12208 | if (attr) | |
12209 | { | |
bb5ed363 | 12210 | bfd *obfd = objfile->obfd; |
ab435259 DE |
12211 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12212 | We take advantage of the fact that DW_AT_ranges does not appear | |
12213 | in DW_TAG_compile_unit of DWO files. */ | |
12214 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
12215 | |
12216 | /* The value of the DW_AT_ranges attribute is the offset of the | |
12217 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
12218 | unsigned long offset = (DW_UNSND (attr) |
12219 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 12220 | const gdb_byte *buffer; |
801e3a5b JB |
12221 | |
12222 | /* For some target architectures, but not others, the | |
12223 | read_address function sign-extends the addresses it returns. | |
12224 | To recognize base address selection entries, we need a | |
12225 | mask. */ | |
12226 | unsigned int addr_size = cu->header.addr_size; | |
12227 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12228 | ||
12229 | /* The base address, to which the next pair is relative. Note | |
12230 | that this 'base' is a DWARF concept: most entries in a range | |
12231 | list are relative, to reduce the number of relocs against the | |
12232 | debugging information. This is separate from this function's | |
12233 | 'baseaddr' argument, which GDB uses to relocate debugging | |
12234 | information from a shared library based on the address at | |
12235 | which the library was loaded. */ | |
d00adf39 DE |
12236 | CORE_ADDR base = cu->base_address; |
12237 | int base_known = cu->base_known; | |
801e3a5b | 12238 | |
d62bfeaf | 12239 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 12240 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
12241 | { |
12242 | complaint (&symfile_complaints, | |
12243 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
12244 | offset); | |
12245 | return; | |
12246 | } | |
d62bfeaf | 12247 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
12248 | |
12249 | for (;;) | |
12250 | { | |
12251 | unsigned int bytes_read; | |
12252 | CORE_ADDR start, end; | |
12253 | ||
12254 | start = read_address (obfd, buffer, cu, &bytes_read); | |
12255 | buffer += bytes_read; | |
12256 | end = read_address (obfd, buffer, cu, &bytes_read); | |
12257 | buffer += bytes_read; | |
12258 | ||
12259 | /* Did we find the end of the range list? */ | |
12260 | if (start == 0 && end == 0) | |
12261 | break; | |
12262 | ||
12263 | /* Did we find a base address selection entry? */ | |
12264 | else if ((start & base_select_mask) == base_select_mask) | |
12265 | { | |
12266 | base = end; | |
12267 | base_known = 1; | |
12268 | } | |
12269 | ||
12270 | /* We found an ordinary address range. */ | |
12271 | else | |
12272 | { | |
12273 | if (!base_known) | |
12274 | { | |
12275 | complaint (&symfile_complaints, | |
3e43a32a MS |
12276 | _("Invalid .debug_ranges data " |
12277 | "(no base address)")); | |
801e3a5b JB |
12278 | return; |
12279 | } | |
12280 | ||
9277c30c UW |
12281 | if (start > end) |
12282 | { | |
12283 | /* Inverted range entries are invalid. */ | |
12284 | complaint (&symfile_complaints, | |
12285 | _("Invalid .debug_ranges data " | |
12286 | "(inverted range)")); | |
12287 | return; | |
12288 | } | |
12289 | ||
12290 | /* Empty range entries have no effect. */ | |
12291 | if (start == end) | |
12292 | continue; | |
12293 | ||
01093045 DE |
12294 | start += base + baseaddr; |
12295 | end += base + baseaddr; | |
12296 | ||
12297 | /* A not-uncommon case of bad debug info. | |
12298 | Don't pollute the addrmap with bad data. */ | |
12299 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
12300 | { | |
12301 | complaint (&symfile_complaints, | |
12302 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 12303 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
12304 | continue; |
12305 | } | |
12306 | ||
3e29f34a MR |
12307 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
12308 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
01093045 | 12309 | record_block_range (block, start, end - 1); |
801e3a5b JB |
12310 | } |
12311 | } | |
12312 | } | |
12313 | } | |
12314 | ||
685b1105 JK |
12315 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
12316 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 12317 | |
685b1105 JK |
12318 | static void |
12319 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
12320 | { |
12321 | const char *cs; | |
38360086 | 12322 | int major, minor; |
60d5a603 JK |
12323 | |
12324 | if (cu->producer == NULL) | |
12325 | { | |
12326 | /* For unknown compilers expect their behavior is DWARF version | |
12327 | compliant. | |
12328 | ||
12329 | GCC started to support .debug_types sections by -gdwarf-4 since | |
12330 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
12331 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
12332 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
12333 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 12334 | } |
b1ffba5a | 12335 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 12336 | { |
38360086 MW |
12337 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
12338 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 12339 | } |
61012eef | 12340 | else if (startswith (cu->producer, "Intel(R) C")) |
685b1105 JK |
12341 | cu->producer_is_icc = 1; |
12342 | else | |
12343 | { | |
12344 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
12345 | compliant. */ | |
60d5a603 JK |
12346 | } |
12347 | ||
ba919b58 | 12348 | cu->checked_producer = 1; |
685b1105 | 12349 | } |
ba919b58 | 12350 | |
685b1105 JK |
12351 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
12352 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
12353 | during 4.6.0 experimental. */ | |
12354 | ||
12355 | static int | |
12356 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
12357 | { | |
12358 | if (!cu->checked_producer) | |
12359 | check_producer (cu); | |
12360 | ||
12361 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
12362 | } |
12363 | ||
12364 | /* Return the default accessibility type if it is not overriden by | |
12365 | DW_AT_accessibility. */ | |
12366 | ||
12367 | static enum dwarf_access_attribute | |
12368 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
12369 | { | |
12370 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
12371 | { | |
12372 | /* The default DWARF 2 accessibility for members is public, the default | |
12373 | accessibility for inheritance is private. */ | |
12374 | ||
12375 | if (die->tag != DW_TAG_inheritance) | |
12376 | return DW_ACCESS_public; | |
12377 | else | |
12378 | return DW_ACCESS_private; | |
12379 | } | |
12380 | else | |
12381 | { | |
12382 | /* DWARF 3+ defines the default accessibility a different way. The same | |
12383 | rules apply now for DW_TAG_inheritance as for the members and it only | |
12384 | depends on the container kind. */ | |
12385 | ||
12386 | if (die->parent->tag == DW_TAG_class_type) | |
12387 | return DW_ACCESS_private; | |
12388 | else | |
12389 | return DW_ACCESS_public; | |
12390 | } | |
12391 | } | |
12392 | ||
74ac6d43 TT |
12393 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
12394 | offset. If the attribute was not found return 0, otherwise return | |
12395 | 1. If it was found but could not properly be handled, set *OFFSET | |
12396 | to 0. */ | |
12397 | ||
12398 | static int | |
12399 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
12400 | LONGEST *offset) | |
12401 | { | |
12402 | struct attribute *attr; | |
12403 | ||
12404 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
12405 | if (attr != NULL) | |
12406 | { | |
12407 | *offset = 0; | |
12408 | ||
12409 | /* Note that we do not check for a section offset first here. | |
12410 | This is because DW_AT_data_member_location is new in DWARF 4, | |
12411 | so if we see it, we can assume that a constant form is really | |
12412 | a constant and not a section offset. */ | |
12413 | if (attr_form_is_constant (attr)) | |
12414 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
12415 | else if (attr_form_is_section_offset (attr)) | |
12416 | dwarf2_complex_location_expr_complaint (); | |
12417 | else if (attr_form_is_block (attr)) | |
12418 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
12419 | else | |
12420 | dwarf2_complex_location_expr_complaint (); | |
12421 | ||
12422 | return 1; | |
12423 | } | |
12424 | ||
12425 | return 0; | |
12426 | } | |
12427 | ||
c906108c SS |
12428 | /* Add an aggregate field to the field list. */ |
12429 | ||
12430 | static void | |
107d2387 | 12431 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12432 | struct dwarf2_cu *cu) |
6e70227d | 12433 | { |
e7c27a73 | 12434 | struct objfile *objfile = cu->objfile; |
5e2b427d | 12435 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12436 | struct nextfield *new_field; |
12437 | struct attribute *attr; | |
12438 | struct field *fp; | |
15d034d0 | 12439 | const char *fieldname = ""; |
c906108c SS |
12440 | |
12441 | /* Allocate a new field list entry and link it in. */ | |
12442 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 12443 | make_cleanup (xfree, new_field); |
c906108c | 12444 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
12445 | |
12446 | if (die->tag == DW_TAG_inheritance) | |
12447 | { | |
12448 | new_field->next = fip->baseclasses; | |
12449 | fip->baseclasses = new_field; | |
12450 | } | |
12451 | else | |
12452 | { | |
12453 | new_field->next = fip->fields; | |
12454 | fip->fields = new_field; | |
12455 | } | |
c906108c SS |
12456 | fip->nfields++; |
12457 | ||
e142c38c | 12458 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
12459 | if (attr) |
12460 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
12461 | else |
12462 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
12463 | if (new_field->accessibility != DW_ACCESS_public) |
12464 | fip->non_public_fields = 1; | |
60d5a603 | 12465 | |
e142c38c | 12466 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
12467 | if (attr) |
12468 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
12469 | else |
12470 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
12471 | |
12472 | fp = &new_field->field; | |
a9a9bd0f | 12473 | |
e142c38c | 12474 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 12475 | { |
74ac6d43 TT |
12476 | LONGEST offset; |
12477 | ||
a9a9bd0f | 12478 | /* Data member other than a C++ static data member. */ |
6e70227d | 12479 | |
c906108c | 12480 | /* Get type of field. */ |
e7c27a73 | 12481 | fp->type = die_type (die, cu); |
c906108c | 12482 | |
d6a843b5 | 12483 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 12484 | |
c906108c | 12485 | /* Get bit size of field (zero if none). */ |
e142c38c | 12486 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
12487 | if (attr) |
12488 | { | |
12489 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
12490 | } | |
12491 | else | |
12492 | { | |
12493 | FIELD_BITSIZE (*fp) = 0; | |
12494 | } | |
12495 | ||
12496 | /* Get bit offset of field. */ | |
74ac6d43 TT |
12497 | if (handle_data_member_location (die, cu, &offset)) |
12498 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 12499 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
12500 | if (attr) |
12501 | { | |
5e2b427d | 12502 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
12503 | { |
12504 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
12505 | additional bit offset from the MSB of the containing |
12506 | anonymous object to the MSB of the field. We don't | |
12507 | have to do anything special since we don't need to | |
12508 | know the size of the anonymous object. */ | |
f41f5e61 | 12509 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
12510 | } |
12511 | else | |
12512 | { | |
12513 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
12514 | MSB of the anonymous object, subtract off the number of |
12515 | bits from the MSB of the field to the MSB of the | |
12516 | object, and then subtract off the number of bits of | |
12517 | the field itself. The result is the bit offset of | |
12518 | the LSB of the field. */ | |
c906108c SS |
12519 | int anonymous_size; |
12520 | int bit_offset = DW_UNSND (attr); | |
12521 | ||
e142c38c | 12522 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12523 | if (attr) |
12524 | { | |
12525 | /* The size of the anonymous object containing | |
12526 | the bit field is explicit, so use the | |
12527 | indicated size (in bytes). */ | |
12528 | anonymous_size = DW_UNSND (attr); | |
12529 | } | |
12530 | else | |
12531 | { | |
12532 | /* The size of the anonymous object containing | |
12533 | the bit field must be inferred from the type | |
12534 | attribute of the data member containing the | |
12535 | bit field. */ | |
12536 | anonymous_size = TYPE_LENGTH (fp->type); | |
12537 | } | |
f41f5e61 PA |
12538 | SET_FIELD_BITPOS (*fp, |
12539 | (FIELD_BITPOS (*fp) | |
12540 | + anonymous_size * bits_per_byte | |
12541 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
12542 | } |
12543 | } | |
12544 | ||
12545 | /* Get name of field. */ | |
39cbfefa DJ |
12546 | fieldname = dwarf2_name (die, cu); |
12547 | if (fieldname == NULL) | |
12548 | fieldname = ""; | |
d8151005 DJ |
12549 | |
12550 | /* The name is already allocated along with this objfile, so we don't | |
12551 | need to duplicate it for the type. */ | |
12552 | fp->name = fieldname; | |
c906108c SS |
12553 | |
12554 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 12555 | pointer or virtual base class pointer) to private. */ |
e142c38c | 12556 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 12557 | { |
d48cc9dd | 12558 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
12559 | new_field->accessibility = DW_ACCESS_private; |
12560 | fip->non_public_fields = 1; | |
12561 | } | |
12562 | } | |
a9a9bd0f | 12563 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 12564 | { |
a9a9bd0f DC |
12565 | /* C++ static member. */ |
12566 | ||
12567 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
12568 | is a declaration, but all versions of G++ as of this writing | |
12569 | (so through at least 3.2.1) incorrectly generate | |
12570 | DW_TAG_variable tags. */ | |
6e70227d | 12571 | |
ff355380 | 12572 | const char *physname; |
c906108c | 12573 | |
a9a9bd0f | 12574 | /* Get name of field. */ |
39cbfefa DJ |
12575 | fieldname = dwarf2_name (die, cu); |
12576 | if (fieldname == NULL) | |
c906108c SS |
12577 | return; |
12578 | ||
254e6b9e | 12579 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
12580 | if (attr |
12581 | /* Only create a symbol if this is an external value. | |
12582 | new_symbol checks this and puts the value in the global symbol | |
12583 | table, which we want. If it is not external, new_symbol | |
12584 | will try to put the value in cu->list_in_scope which is wrong. */ | |
12585 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
12586 | { |
12587 | /* A static const member, not much different than an enum as far as | |
12588 | we're concerned, except that we can support more types. */ | |
12589 | new_symbol (die, NULL, cu); | |
12590 | } | |
12591 | ||
2df3850c | 12592 | /* Get physical name. */ |
ff355380 | 12593 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 12594 | |
d8151005 DJ |
12595 | /* The name is already allocated along with this objfile, so we don't |
12596 | need to duplicate it for the type. */ | |
12597 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 12598 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 12599 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
12600 | } |
12601 | else if (die->tag == DW_TAG_inheritance) | |
12602 | { | |
74ac6d43 | 12603 | LONGEST offset; |
d4b96c9a | 12604 | |
74ac6d43 TT |
12605 | /* C++ base class field. */ |
12606 | if (handle_data_member_location (die, cu, &offset)) | |
12607 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 12608 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 12609 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
12610 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
12611 | fip->nbaseclasses++; | |
12612 | } | |
12613 | } | |
12614 | ||
98751a41 JK |
12615 | /* Add a typedef defined in the scope of the FIP's class. */ |
12616 | ||
12617 | static void | |
12618 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
12619 | struct dwarf2_cu *cu) | |
6e70227d | 12620 | { |
98751a41 | 12621 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
12622 | struct typedef_field_list *new_field; |
12623 | struct attribute *attr; | |
12624 | struct typedef_field *fp; | |
12625 | char *fieldname = ""; | |
12626 | ||
12627 | /* Allocate a new field list entry and link it in. */ | |
12628 | new_field = xzalloc (sizeof (*new_field)); | |
12629 | make_cleanup (xfree, new_field); | |
12630 | ||
12631 | gdb_assert (die->tag == DW_TAG_typedef); | |
12632 | ||
12633 | fp = &new_field->field; | |
12634 | ||
12635 | /* Get name of field. */ | |
12636 | fp->name = dwarf2_name (die, cu); | |
12637 | if (fp->name == NULL) | |
12638 | return; | |
12639 | ||
12640 | fp->type = read_type_die (die, cu); | |
12641 | ||
12642 | new_field->next = fip->typedef_field_list; | |
12643 | fip->typedef_field_list = new_field; | |
12644 | fip->typedef_field_list_count++; | |
12645 | } | |
12646 | ||
c906108c SS |
12647 | /* Create the vector of fields, and attach it to the type. */ |
12648 | ||
12649 | static void | |
fba45db2 | 12650 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12651 | struct dwarf2_cu *cu) |
c906108c SS |
12652 | { |
12653 | int nfields = fip->nfields; | |
12654 | ||
12655 | /* Record the field count, allocate space for the array of fields, | |
12656 | and create blank accessibility bitfields if necessary. */ | |
12657 | TYPE_NFIELDS (type) = nfields; | |
12658 | TYPE_FIELDS (type) = (struct field *) | |
12659 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
12660 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
12661 | ||
b4ba55a1 | 12662 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
12663 | { |
12664 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12665 | ||
12666 | TYPE_FIELD_PRIVATE_BITS (type) = | |
12667 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12668 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
12669 | ||
12670 | TYPE_FIELD_PROTECTED_BITS (type) = | |
12671 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12672 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
12673 | ||
774b6a14 TT |
12674 | TYPE_FIELD_IGNORE_BITS (type) = |
12675 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12676 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
12677 | } |
12678 | ||
12679 | /* If the type has baseclasses, allocate and clear a bit vector for | |
12680 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 12681 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
12682 | { |
12683 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 12684 | unsigned char *pointer; |
c906108c SS |
12685 | |
12686 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
12687 | pointer = TYPE_ALLOC (type, num_bytes); |
12688 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
12689 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
12690 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
12691 | } | |
12692 | ||
3e43a32a MS |
12693 | /* Copy the saved-up fields into the field vector. Start from the head of |
12694 | the list, adding to the tail of the field array, so that they end up in | |
12695 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
12696 | while (nfields-- > 0) |
12697 | { | |
7d0ccb61 DJ |
12698 | struct nextfield *fieldp; |
12699 | ||
12700 | if (fip->fields) | |
12701 | { | |
12702 | fieldp = fip->fields; | |
12703 | fip->fields = fieldp->next; | |
12704 | } | |
12705 | else | |
12706 | { | |
12707 | fieldp = fip->baseclasses; | |
12708 | fip->baseclasses = fieldp->next; | |
12709 | } | |
12710 | ||
12711 | TYPE_FIELD (type, nfields) = fieldp->field; | |
12712 | switch (fieldp->accessibility) | |
c906108c | 12713 | { |
c5aa993b | 12714 | case DW_ACCESS_private: |
b4ba55a1 JB |
12715 | if (cu->language != language_ada) |
12716 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 12717 | break; |
c906108c | 12718 | |
c5aa993b | 12719 | case DW_ACCESS_protected: |
b4ba55a1 JB |
12720 | if (cu->language != language_ada) |
12721 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 12722 | break; |
c906108c | 12723 | |
c5aa993b JM |
12724 | case DW_ACCESS_public: |
12725 | break; | |
c906108c | 12726 | |
c5aa993b JM |
12727 | default: |
12728 | /* Unknown accessibility. Complain and treat it as public. */ | |
12729 | { | |
e2e0b3e5 | 12730 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 12731 | fieldp->accessibility); |
c5aa993b JM |
12732 | } |
12733 | break; | |
c906108c SS |
12734 | } |
12735 | if (nfields < fip->nbaseclasses) | |
12736 | { | |
7d0ccb61 | 12737 | switch (fieldp->virtuality) |
c906108c | 12738 | { |
c5aa993b JM |
12739 | case DW_VIRTUALITY_virtual: |
12740 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 12741 | if (cu->language == language_ada) |
a73c6dcd | 12742 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
12743 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
12744 | break; | |
c906108c SS |
12745 | } |
12746 | } | |
c906108c SS |
12747 | } |
12748 | } | |
12749 | ||
7d27a96d TT |
12750 | /* Return true if this member function is a constructor, false |
12751 | otherwise. */ | |
12752 | ||
12753 | static int | |
12754 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
12755 | { | |
12756 | const char *fieldname; | |
fe978cb0 | 12757 | const char *type_name; |
7d27a96d TT |
12758 | int len; |
12759 | ||
12760 | if (die->parent == NULL) | |
12761 | return 0; | |
12762 | ||
12763 | if (die->parent->tag != DW_TAG_structure_type | |
12764 | && die->parent->tag != DW_TAG_union_type | |
12765 | && die->parent->tag != DW_TAG_class_type) | |
12766 | return 0; | |
12767 | ||
12768 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
12769 | type_name = dwarf2_name (die->parent, cu); |
12770 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
12771 | return 0; |
12772 | ||
12773 | len = strlen (fieldname); | |
fe978cb0 PA |
12774 | return (strncmp (fieldname, type_name, len) == 0 |
12775 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
12776 | } |
12777 | ||
c906108c SS |
12778 | /* Add a member function to the proper fieldlist. */ |
12779 | ||
12780 | static void | |
107d2387 | 12781 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12782 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 12783 | { |
e7c27a73 | 12784 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12785 | struct attribute *attr; |
12786 | struct fnfieldlist *flp; | |
12787 | int i; | |
12788 | struct fn_field *fnp; | |
15d034d0 | 12789 | const char *fieldname; |
c906108c | 12790 | struct nextfnfield *new_fnfield; |
f792889a | 12791 | struct type *this_type; |
60d5a603 | 12792 | enum dwarf_access_attribute accessibility; |
c906108c | 12793 | |
b4ba55a1 | 12794 | if (cu->language == language_ada) |
a73c6dcd | 12795 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 12796 | |
2df3850c | 12797 | /* Get name of member function. */ |
39cbfefa DJ |
12798 | fieldname = dwarf2_name (die, cu); |
12799 | if (fieldname == NULL) | |
2df3850c | 12800 | return; |
c906108c | 12801 | |
c906108c SS |
12802 | /* Look up member function name in fieldlist. */ |
12803 | for (i = 0; i < fip->nfnfields; i++) | |
12804 | { | |
27bfe10e | 12805 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
12806 | break; |
12807 | } | |
12808 | ||
12809 | /* Create new list element if necessary. */ | |
12810 | if (i < fip->nfnfields) | |
12811 | flp = &fip->fnfieldlists[i]; | |
12812 | else | |
12813 | { | |
12814 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
12815 | { | |
12816 | fip->fnfieldlists = (struct fnfieldlist *) | |
12817 | xrealloc (fip->fnfieldlists, | |
12818 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 12819 | * sizeof (struct fnfieldlist)); |
c906108c | 12820 | if (fip->nfnfields == 0) |
c13c43fd | 12821 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
12822 | } |
12823 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
12824 | flp->name = fieldname; | |
12825 | flp->length = 0; | |
12826 | flp->head = NULL; | |
3da10d80 | 12827 | i = fip->nfnfields++; |
c906108c SS |
12828 | } |
12829 | ||
12830 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 12831 | entry. */ |
c906108c | 12832 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 12833 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
12834 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
12835 | new_fnfield->next = flp->head; | |
12836 | flp->head = new_fnfield; | |
12837 | flp->length++; | |
12838 | ||
12839 | /* Fill in the member function field info. */ | |
12840 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
12841 | |
12842 | /* Delay processing of the physname until later. */ | |
12843 | if (cu->language == language_cplus || cu->language == language_java) | |
12844 | { | |
12845 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
12846 | die, cu); | |
12847 | } | |
12848 | else | |
12849 | { | |
1d06ead6 | 12850 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
12851 | fnp->physname = physname ? physname : ""; |
12852 | } | |
12853 | ||
c906108c | 12854 | fnp->type = alloc_type (objfile); |
f792889a DJ |
12855 | this_type = read_type_die (die, cu); |
12856 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 12857 | { |
f792889a | 12858 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 12859 | |
f792889a | 12860 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
12861 | of the method itself (TYPE_CODE_METHOD). */ |
12862 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
12863 | TYPE_TARGET_TYPE (this_type), |
12864 | TYPE_FIELDS (this_type), | |
12865 | TYPE_NFIELDS (this_type), | |
12866 | TYPE_VARARGS (this_type)); | |
c906108c SS |
12867 | |
12868 | /* Handle static member functions. | |
c5aa993b | 12869 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
12870 | member functions. G++ helps GDB by marking the first |
12871 | parameter for non-static member functions (which is the this | |
12872 | pointer) as artificial. We obtain this information from | |
12873 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 12874 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
12875 | fnp->voffset = VOFFSET_STATIC; |
12876 | } | |
12877 | else | |
e2e0b3e5 | 12878 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 12879 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
12880 | |
12881 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 12882 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 12883 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 12884 | |
3e43a32a MS |
12885 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
12886 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
12887 | |
12888 | /* Get accessibility. */ | |
e142c38c | 12889 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 12890 | if (attr) |
60d5a603 JK |
12891 | accessibility = DW_UNSND (attr); |
12892 | else | |
12893 | accessibility = dwarf2_default_access_attribute (die, cu); | |
12894 | switch (accessibility) | |
c906108c | 12895 | { |
60d5a603 JK |
12896 | case DW_ACCESS_private: |
12897 | fnp->is_private = 1; | |
12898 | break; | |
12899 | case DW_ACCESS_protected: | |
12900 | fnp->is_protected = 1; | |
12901 | break; | |
c906108c SS |
12902 | } |
12903 | ||
b02dede2 | 12904 | /* Check for artificial methods. */ |
e142c38c | 12905 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
12906 | if (attr && DW_UNSND (attr) != 0) |
12907 | fnp->is_artificial = 1; | |
12908 | ||
7d27a96d TT |
12909 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
12910 | ||
0d564a31 | 12911 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
12912 | function. For older versions of GCC, this is an offset in the |
12913 | appropriate virtual table, as specified by DW_AT_containing_type. | |
12914 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
12915 | to the object address. */ |
12916 | ||
e142c38c | 12917 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 12918 | if (attr) |
8e19ed76 | 12919 | { |
aec5aa8b | 12920 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 12921 | { |
aec5aa8b TT |
12922 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
12923 | { | |
12924 | /* Old-style GCC. */ | |
12925 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
12926 | } | |
12927 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12928 | || (DW_BLOCK (attr)->size > 1 | |
12929 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
12930 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
12931 | { | |
12932 | struct dwarf_block blk; | |
12933 | int offset; | |
12934 | ||
12935 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12936 | ? 1 : 2); | |
12937 | blk.size = DW_BLOCK (attr)->size - offset; | |
12938 | blk.data = DW_BLOCK (attr)->data + offset; | |
12939 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
12940 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
12941 | dwarf2_complex_location_expr_complaint (); | |
12942 | else | |
12943 | fnp->voffset /= cu->header.addr_size; | |
12944 | fnp->voffset += 2; | |
12945 | } | |
12946 | else | |
12947 | dwarf2_complex_location_expr_complaint (); | |
12948 | ||
12949 | if (!fnp->fcontext) | |
7e993ebf KS |
12950 | { |
12951 | /* If there is no `this' field and no DW_AT_containing_type, | |
12952 | we cannot actually find a base class context for the | |
12953 | vtable! */ | |
12954 | if (TYPE_NFIELDS (this_type) == 0 | |
12955 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
12956 | { | |
12957 | complaint (&symfile_complaints, | |
12958 | _("cannot determine context for virtual member " | |
12959 | "function \"%s\" (offset %d)"), | |
12960 | fieldname, die->offset.sect_off); | |
12961 | } | |
12962 | else | |
12963 | { | |
12964 | fnp->fcontext | |
12965 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
12966 | } | |
12967 | } | |
aec5aa8b | 12968 | } |
3690dd37 | 12969 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 12970 | { |
4d3c2250 | 12971 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
12972 | } |
12973 | else | |
12974 | { | |
4d3c2250 KB |
12975 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
12976 | fieldname); | |
8e19ed76 | 12977 | } |
0d564a31 | 12978 | } |
d48cc9dd DJ |
12979 | else |
12980 | { | |
12981 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
12982 | if (attr && DW_UNSND (attr)) | |
12983 | { | |
12984 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
12985 | complaint (&symfile_complaints, | |
3e43a32a MS |
12986 | _("Member function \"%s\" (offset %d) is virtual " |
12987 | "but the vtable offset is not specified"), | |
b64f50a1 | 12988 | fieldname, die->offset.sect_off); |
9655fd1a | 12989 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
12990 | TYPE_CPLUS_DYNAMIC (type) = 1; |
12991 | } | |
12992 | } | |
c906108c SS |
12993 | } |
12994 | ||
12995 | /* Create the vector of member function fields, and attach it to the type. */ | |
12996 | ||
12997 | static void | |
fba45db2 | 12998 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12999 | struct dwarf2_cu *cu) |
c906108c SS |
13000 | { |
13001 | struct fnfieldlist *flp; | |
c906108c SS |
13002 | int i; |
13003 | ||
b4ba55a1 | 13004 | if (cu->language == language_ada) |
a73c6dcd | 13005 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 13006 | |
c906108c SS |
13007 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
13008 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
13009 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
13010 | ||
13011 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
13012 | { | |
13013 | struct nextfnfield *nfp = flp->head; | |
13014 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
13015 | int k; | |
13016 | ||
13017 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
13018 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
13019 | fn_flp->fn_fields = (struct fn_field *) | |
13020 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
13021 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 13022 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
13023 | } |
13024 | ||
13025 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
13026 | } |
13027 | ||
1168df01 JB |
13028 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
13029 | language, zero otherwise. */ | |
13030 | static int | |
13031 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
13032 | { | |
13033 | static const char vptr[] = "_vptr"; | |
987504bb | 13034 | static const char vtable[] = "vtable"; |
1168df01 | 13035 | |
987504bb JJ |
13036 | /* Look for the C++ and Java forms of the vtable. */ |
13037 | if ((cu->language == language_java | |
61012eef GB |
13038 | && startswith (name, vtable)) |
13039 | || (startswith (name, vptr) | |
987504bb | 13040 | && is_cplus_marker (name[sizeof (vptr) - 1]))) |
1168df01 JB |
13041 | return 1; |
13042 | ||
13043 | return 0; | |
13044 | } | |
13045 | ||
c0dd20ea | 13046 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
13047 | functions, with the ABI-specified layout. If TYPE describes |
13048 | such a structure, smash it into a member function type. | |
61049d3b DJ |
13049 | |
13050 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
13051 | This is GCC PR debug/28767. */ | |
c0dd20ea | 13052 | |
0b92b5bb TT |
13053 | static void |
13054 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 13055 | { |
09e2d7c7 | 13056 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
13057 | |
13058 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
13059 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
13060 | return; | |
c0dd20ea DJ |
13061 | |
13062 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
13063 | if (TYPE_FIELD_NAME (type, 0) == NULL |
13064 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
13065 | || TYPE_FIELD_NAME (type, 1) == NULL | |
13066 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
13067 | return; | |
c0dd20ea DJ |
13068 | |
13069 | /* Find the type of the method. */ | |
0b92b5bb | 13070 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
13071 | if (pfn_type == NULL |
13072 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
13073 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 13074 | return; |
c0dd20ea DJ |
13075 | |
13076 | /* Look for the "this" argument. */ | |
13077 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
13078 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 13079 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 13080 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 13081 | return; |
c0dd20ea | 13082 | |
09e2d7c7 | 13083 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 13084 | new_type = alloc_type (objfile); |
09e2d7c7 | 13085 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
13086 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
13087 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 13088 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 13089 | } |
1168df01 | 13090 | |
685b1105 JK |
13091 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
13092 | (icc). */ | |
13093 | ||
13094 | static int | |
13095 | producer_is_icc (struct dwarf2_cu *cu) | |
13096 | { | |
13097 | if (!cu->checked_producer) | |
13098 | check_producer (cu); | |
13099 | ||
13100 | return cu->producer_is_icc; | |
13101 | } | |
13102 | ||
c906108c | 13103 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
13104 | (definition) to create a type for the structure or union. Fill in |
13105 | the type's name and general properties; the members will not be | |
83655187 DE |
13106 | processed until process_structure_scope. A symbol table entry for |
13107 | the type will also not be done until process_structure_scope (assuming | |
13108 | the type has a name). | |
c906108c | 13109 | |
c767944b DJ |
13110 | NOTE: we need to call these functions regardless of whether or not the |
13111 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 13112 | structure or union. This gets the type entered into our set of |
83655187 | 13113 | user defined types. */ |
c906108c | 13114 | |
f792889a | 13115 | static struct type * |
134d01f1 | 13116 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13117 | { |
e7c27a73 | 13118 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13119 | struct type *type; |
13120 | struct attribute *attr; | |
15d034d0 | 13121 | const char *name; |
c906108c | 13122 | |
348e048f DE |
13123 | /* If the definition of this type lives in .debug_types, read that type. |
13124 | Don't follow DW_AT_specification though, that will take us back up | |
13125 | the chain and we want to go down. */ | |
45e58e77 | 13126 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13127 | if (attr) |
13128 | { | |
ac9ec31b | 13129 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13130 | |
ac9ec31b | 13131 | /* The type's CU may not be the same as CU. |
02142a6c | 13132 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13133 | return set_die_type (die, type, cu); |
13134 | } | |
13135 | ||
c0dd20ea | 13136 | type = alloc_type (objfile); |
c906108c | 13137 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 13138 | |
39cbfefa DJ |
13139 | name = dwarf2_name (die, cu); |
13140 | if (name != NULL) | |
c906108c | 13141 | { |
987504bb JJ |
13142 | if (cu->language == language_cplus |
13143 | || cu->language == language_java) | |
63d06c5c | 13144 | { |
15d034d0 | 13145 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
13146 | |
13147 | /* dwarf2_full_name might have already finished building the DIE's | |
13148 | type. If so, there is no need to continue. */ | |
13149 | if (get_die_type (die, cu) != NULL) | |
13150 | return get_die_type (die, cu); | |
13151 | ||
13152 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
13153 | if (die->tag == DW_TAG_structure_type |
13154 | || die->tag == DW_TAG_class_type) | |
13155 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
13156 | } |
13157 | else | |
13158 | { | |
d8151005 DJ |
13159 | /* The name is already allocated along with this objfile, so |
13160 | we don't need to duplicate it for the type. */ | |
7d455152 | 13161 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
13162 | if (die->tag == DW_TAG_class_type) |
13163 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 13164 | } |
c906108c SS |
13165 | } |
13166 | ||
13167 | if (die->tag == DW_TAG_structure_type) | |
13168 | { | |
13169 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
13170 | } | |
13171 | else if (die->tag == DW_TAG_union_type) | |
13172 | { | |
13173 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
13174 | } | |
13175 | else | |
13176 | { | |
4753d33b | 13177 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
13178 | } |
13179 | ||
0cc2414c TT |
13180 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
13181 | TYPE_DECLARED_CLASS (type) = 1; | |
13182 | ||
e142c38c | 13183 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13184 | if (attr) |
13185 | { | |
13186 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13187 | } | |
13188 | else | |
13189 | { | |
13190 | TYPE_LENGTH (type) = 0; | |
13191 | } | |
13192 | ||
422b1cb0 | 13193 | if (producer_is_icc (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 JK |
13194 | { |
13195 | /* ICC does not output the required DW_AT_declaration | |
13196 | on incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 13197 | TYPE_STUB (type) = 1; |
685b1105 JK |
13198 | } |
13199 | else | |
13200 | TYPE_STUB_SUPPORTED (type) = 1; | |
13201 | ||
dc718098 | 13202 | if (die_is_declaration (die, cu)) |
876cecd0 | 13203 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
13204 | else if (attr == NULL && die->child == NULL |
13205 | && producer_is_realview (cu->producer)) | |
13206 | /* RealView does not output the required DW_AT_declaration | |
13207 | on incomplete types. */ | |
13208 | TYPE_STUB (type) = 1; | |
dc718098 | 13209 | |
c906108c SS |
13210 | /* We need to add the type field to the die immediately so we don't |
13211 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 13212 | type within the structure itself. */ |
1c379e20 | 13213 | set_die_type (die, type, cu); |
c906108c | 13214 | |
7e314c57 JK |
13215 | /* set_die_type should be already done. */ |
13216 | set_descriptive_type (type, die, cu); | |
13217 | ||
c767944b DJ |
13218 | return type; |
13219 | } | |
13220 | ||
13221 | /* Finish creating a structure or union type, including filling in | |
13222 | its members and creating a symbol for it. */ | |
13223 | ||
13224 | static void | |
13225 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13226 | { | |
13227 | struct objfile *objfile = cu->objfile; | |
ca040673 | 13228 | struct die_info *child_die; |
c767944b DJ |
13229 | struct type *type; |
13230 | ||
13231 | type = get_die_type (die, cu); | |
13232 | if (type == NULL) | |
13233 | type = read_structure_type (die, cu); | |
13234 | ||
e142c38c | 13235 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
13236 | { |
13237 | struct field_info fi; | |
34eaf542 | 13238 | VEC (symbolp) *template_args = NULL; |
c767944b | 13239 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
13240 | |
13241 | memset (&fi, 0, sizeof (struct field_info)); | |
13242 | ||
639d11d3 | 13243 | child_die = die->child; |
c906108c SS |
13244 | |
13245 | while (child_die && child_die->tag) | |
13246 | { | |
a9a9bd0f DC |
13247 | if (child_die->tag == DW_TAG_member |
13248 | || child_die->tag == DW_TAG_variable) | |
c906108c | 13249 | { |
a9a9bd0f DC |
13250 | /* NOTE: carlton/2002-11-05: A C++ static data member |
13251 | should be a DW_TAG_member that is a declaration, but | |
13252 | all versions of G++ as of this writing (so through at | |
13253 | least 3.2.1) incorrectly generate DW_TAG_variable | |
13254 | tags for them instead. */ | |
e7c27a73 | 13255 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13256 | } |
8713b1b1 | 13257 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 13258 | { |
0963b4bd | 13259 | /* C++ member function. */ |
e7c27a73 | 13260 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
13261 | } |
13262 | else if (child_die->tag == DW_TAG_inheritance) | |
13263 | { | |
13264 | /* C++ base class field. */ | |
e7c27a73 | 13265 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13266 | } |
98751a41 JK |
13267 | else if (child_die->tag == DW_TAG_typedef) |
13268 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
13269 | else if (child_die->tag == DW_TAG_template_type_param |
13270 | || child_die->tag == DW_TAG_template_value_param) | |
13271 | { | |
13272 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13273 | ||
f1078f66 DJ |
13274 | if (arg != NULL) |
13275 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
13276 | } |
13277 | ||
c906108c SS |
13278 | child_die = sibling_die (child_die); |
13279 | } | |
13280 | ||
34eaf542 TT |
13281 | /* Attach template arguments to type. */ |
13282 | if (! VEC_empty (symbolp, template_args)) | |
13283 | { | |
13284 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
13285 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13286 | = VEC_length (symbolp, template_args); | |
13287 | TYPE_TEMPLATE_ARGUMENTS (type) | |
13288 | = obstack_alloc (&objfile->objfile_obstack, | |
13289 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13290 | * sizeof (struct symbol *))); | |
13291 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
13292 | VEC_address (symbolp, template_args), | |
13293 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13294 | * sizeof (struct symbol *))); | |
13295 | VEC_free (symbolp, template_args); | |
13296 | } | |
13297 | ||
c906108c SS |
13298 | /* Attach fields and member functions to the type. */ |
13299 | if (fi.nfields) | |
e7c27a73 | 13300 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
13301 | if (fi.nfnfields) |
13302 | { | |
e7c27a73 | 13303 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 13304 | |
c5aa993b | 13305 | /* Get the type which refers to the base class (possibly this |
c906108c | 13306 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
13307 | class from the DW_AT_containing_type attribute. This use of |
13308 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 13309 | |
e142c38c | 13310 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 13311 | { |
e7c27a73 | 13312 | struct type *t = die_containing_type (die, cu); |
c906108c | 13313 | |
ae6ae975 | 13314 | set_type_vptr_basetype (type, t); |
c906108c SS |
13315 | if (type == t) |
13316 | { | |
c906108c SS |
13317 | int i; |
13318 | ||
13319 | /* Our own class provides vtbl ptr. */ | |
13320 | for (i = TYPE_NFIELDS (t) - 1; | |
13321 | i >= TYPE_N_BASECLASSES (t); | |
13322 | --i) | |
13323 | { | |
0d5cff50 | 13324 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 13325 | |
1168df01 | 13326 | if (is_vtable_name (fieldname, cu)) |
c906108c | 13327 | { |
ae6ae975 | 13328 | set_type_vptr_fieldno (type, i); |
c906108c SS |
13329 | break; |
13330 | } | |
13331 | } | |
13332 | ||
13333 | /* Complain if virtual function table field not found. */ | |
13334 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 13335 | complaint (&symfile_complaints, |
3e43a32a MS |
13336 | _("virtual function table pointer " |
13337 | "not found when defining class '%s'"), | |
4d3c2250 KB |
13338 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
13339 | ""); | |
c906108c SS |
13340 | } |
13341 | else | |
13342 | { | |
ae6ae975 | 13343 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
13344 | } |
13345 | } | |
f6235d4c | 13346 | else if (cu->producer |
61012eef | 13347 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
13348 | { |
13349 | /* The IBM XLC compiler does not provide direct indication | |
13350 | of the containing type, but the vtable pointer is | |
13351 | always named __vfp. */ | |
13352 | ||
13353 | int i; | |
13354 | ||
13355 | for (i = TYPE_NFIELDS (type) - 1; | |
13356 | i >= TYPE_N_BASECLASSES (type); | |
13357 | --i) | |
13358 | { | |
13359 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
13360 | { | |
ae6ae975 DE |
13361 | set_type_vptr_fieldno (type, i); |
13362 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
13363 | break; |
13364 | } | |
13365 | } | |
13366 | } | |
c906108c | 13367 | } |
98751a41 JK |
13368 | |
13369 | /* Copy fi.typedef_field_list linked list elements content into the | |
13370 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
13371 | if (fi.typedef_field_list) | |
13372 | { | |
13373 | int i = fi.typedef_field_list_count; | |
13374 | ||
a0d7a4ff | 13375 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
13376 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
13377 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
13378 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
13379 | ||
13380 | /* Reverse the list order to keep the debug info elements order. */ | |
13381 | while (--i >= 0) | |
13382 | { | |
13383 | struct typedef_field *dest, *src; | |
6e70227d | 13384 | |
98751a41 JK |
13385 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
13386 | src = &fi.typedef_field_list->field; | |
13387 | fi.typedef_field_list = fi.typedef_field_list->next; | |
13388 | *dest = *src; | |
13389 | } | |
13390 | } | |
c767944b DJ |
13391 | |
13392 | do_cleanups (back_to); | |
eb2a6f42 TT |
13393 | |
13394 | if (HAVE_CPLUS_STRUCT (type)) | |
13395 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 13396 | } |
63d06c5c | 13397 | |
bb5ed363 | 13398 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 13399 | |
90aeadfc DC |
13400 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
13401 | snapshots) has been known to create a die giving a declaration | |
13402 | for a class that has, as a child, a die giving a definition for a | |
13403 | nested class. So we have to process our children even if the | |
13404 | current die is a declaration. Normally, of course, a declaration | |
13405 | won't have any children at all. */ | |
134d01f1 | 13406 | |
ca040673 DE |
13407 | child_die = die->child; |
13408 | ||
90aeadfc DC |
13409 | while (child_die != NULL && child_die->tag) |
13410 | { | |
13411 | if (child_die->tag == DW_TAG_member | |
13412 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
13413 | || child_die->tag == DW_TAG_inheritance |
13414 | || child_die->tag == DW_TAG_template_value_param | |
13415 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 13416 | { |
90aeadfc | 13417 | /* Do nothing. */ |
134d01f1 | 13418 | } |
90aeadfc DC |
13419 | else |
13420 | process_die (child_die, cu); | |
134d01f1 | 13421 | |
90aeadfc | 13422 | child_die = sibling_die (child_die); |
134d01f1 DJ |
13423 | } |
13424 | ||
fa4028e9 JB |
13425 | /* Do not consider external references. According to the DWARF standard, |
13426 | these DIEs are identified by the fact that they have no byte_size | |
13427 | attribute, and a declaration attribute. */ | |
13428 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
13429 | || !die_is_declaration (die, cu)) | |
c767944b | 13430 | new_symbol (die, type, cu); |
134d01f1 DJ |
13431 | } |
13432 | ||
55426c9d JB |
13433 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
13434 | update TYPE using some information only available in DIE's children. */ | |
13435 | ||
13436 | static void | |
13437 | update_enumeration_type_from_children (struct die_info *die, | |
13438 | struct type *type, | |
13439 | struct dwarf2_cu *cu) | |
13440 | { | |
13441 | struct obstack obstack; | |
60f7655a | 13442 | struct die_info *child_die; |
55426c9d JB |
13443 | int unsigned_enum = 1; |
13444 | int flag_enum = 1; | |
13445 | ULONGEST mask = 0; | |
13446 | struct cleanup *old_chain; | |
13447 | ||
13448 | obstack_init (&obstack); | |
13449 | old_chain = make_cleanup_obstack_free (&obstack); | |
13450 | ||
60f7655a DE |
13451 | for (child_die = die->child; |
13452 | child_die != NULL && child_die->tag; | |
13453 | child_die = sibling_die (child_die)) | |
55426c9d JB |
13454 | { |
13455 | struct attribute *attr; | |
13456 | LONGEST value; | |
13457 | const gdb_byte *bytes; | |
13458 | struct dwarf2_locexpr_baton *baton; | |
13459 | const char *name; | |
60f7655a | 13460 | |
55426c9d JB |
13461 | if (child_die->tag != DW_TAG_enumerator) |
13462 | continue; | |
13463 | ||
13464 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
13465 | if (attr == NULL) | |
13466 | continue; | |
13467 | ||
13468 | name = dwarf2_name (child_die, cu); | |
13469 | if (name == NULL) | |
13470 | name = "<anonymous enumerator>"; | |
13471 | ||
13472 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
13473 | &value, &bytes, &baton); | |
13474 | if (value < 0) | |
13475 | { | |
13476 | unsigned_enum = 0; | |
13477 | flag_enum = 0; | |
13478 | } | |
13479 | else if ((mask & value) != 0) | |
13480 | flag_enum = 0; | |
13481 | else | |
13482 | mask |= value; | |
13483 | ||
13484 | /* If we already know that the enum type is neither unsigned, nor | |
13485 | a flag type, no need to look at the rest of the enumerates. */ | |
13486 | if (!unsigned_enum && !flag_enum) | |
13487 | break; | |
55426c9d JB |
13488 | } |
13489 | ||
13490 | if (unsigned_enum) | |
13491 | TYPE_UNSIGNED (type) = 1; | |
13492 | if (flag_enum) | |
13493 | TYPE_FLAG_ENUM (type) = 1; | |
13494 | ||
13495 | do_cleanups (old_chain); | |
13496 | } | |
13497 | ||
134d01f1 DJ |
13498 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
13499 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 13500 | |
f792889a | 13501 | static struct type * |
134d01f1 | 13502 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13503 | { |
e7c27a73 | 13504 | struct objfile *objfile = cu->objfile; |
c906108c | 13505 | struct type *type; |
c906108c | 13506 | struct attribute *attr; |
0114d602 | 13507 | const char *name; |
134d01f1 | 13508 | |
348e048f DE |
13509 | /* If the definition of this type lives in .debug_types, read that type. |
13510 | Don't follow DW_AT_specification though, that will take us back up | |
13511 | the chain and we want to go down. */ | |
45e58e77 | 13512 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13513 | if (attr) |
13514 | { | |
ac9ec31b | 13515 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13516 | |
ac9ec31b | 13517 | /* The type's CU may not be the same as CU. |
02142a6c | 13518 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13519 | return set_die_type (die, type, cu); |
13520 | } | |
13521 | ||
c906108c SS |
13522 | type = alloc_type (objfile); |
13523 | ||
13524 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 13525 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 13526 | if (name != NULL) |
7d455152 | 13527 | TYPE_TAG_NAME (type) = name; |
c906108c | 13528 | |
0626fc76 TT |
13529 | attr = dwarf2_attr (die, DW_AT_type, cu); |
13530 | if (attr != NULL) | |
13531 | { | |
13532 | struct type *underlying_type = die_type (die, cu); | |
13533 | ||
13534 | TYPE_TARGET_TYPE (type) = underlying_type; | |
13535 | } | |
13536 | ||
e142c38c | 13537 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13538 | if (attr) |
13539 | { | |
13540 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13541 | } | |
13542 | else | |
13543 | { | |
13544 | TYPE_LENGTH (type) = 0; | |
13545 | } | |
13546 | ||
137033e9 JB |
13547 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
13548 | declared as private in the package spec, and then defined only | |
13549 | inside the package body. Such types are known as Taft Amendment | |
13550 | Types. When another package uses such a type, an incomplete DIE | |
13551 | may be generated by the compiler. */ | |
02eb380e | 13552 | if (die_is_declaration (die, cu)) |
876cecd0 | 13553 | TYPE_STUB (type) = 1; |
02eb380e | 13554 | |
0626fc76 TT |
13555 | /* Finish the creation of this type by using the enum's children. |
13556 | We must call this even when the underlying type has been provided | |
13557 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
13558 | update_enumeration_type_from_children (die, type, cu); |
13559 | ||
0626fc76 TT |
13560 | /* If this type has an underlying type that is not a stub, then we |
13561 | may use its attributes. We always use the "unsigned" attribute | |
13562 | in this situation, because ordinarily we guess whether the type | |
13563 | is unsigned -- but the guess can be wrong and the underlying type | |
13564 | can tell us the reality. However, we defer to a local size | |
13565 | attribute if one exists, because this lets the compiler override | |
13566 | the underlying type if needed. */ | |
13567 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
13568 | { | |
13569 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
13570 | if (TYPE_LENGTH (type) == 0) | |
13571 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
13572 | } | |
13573 | ||
3d567982 TT |
13574 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
13575 | ||
f792889a | 13576 | return set_die_type (die, type, cu); |
134d01f1 DJ |
13577 | } |
13578 | ||
13579 | /* Given a pointer to a die which begins an enumeration, process all | |
13580 | the dies that define the members of the enumeration, and create the | |
13581 | symbol for the enumeration type. | |
13582 | ||
13583 | NOTE: We reverse the order of the element list. */ | |
13584 | ||
13585 | static void | |
13586 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13587 | { | |
f792889a | 13588 | struct type *this_type; |
134d01f1 | 13589 | |
f792889a DJ |
13590 | this_type = get_die_type (die, cu); |
13591 | if (this_type == NULL) | |
13592 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 13593 | |
639d11d3 | 13594 | if (die->child != NULL) |
c906108c | 13595 | { |
9dc481d3 DE |
13596 | struct die_info *child_die; |
13597 | struct symbol *sym; | |
13598 | struct field *fields = NULL; | |
13599 | int num_fields = 0; | |
15d034d0 | 13600 | const char *name; |
9dc481d3 | 13601 | |
639d11d3 | 13602 | child_die = die->child; |
c906108c SS |
13603 | while (child_die && child_die->tag) |
13604 | { | |
13605 | if (child_die->tag != DW_TAG_enumerator) | |
13606 | { | |
e7c27a73 | 13607 | process_die (child_die, cu); |
c906108c SS |
13608 | } |
13609 | else | |
13610 | { | |
39cbfefa DJ |
13611 | name = dwarf2_name (child_die, cu); |
13612 | if (name) | |
c906108c | 13613 | { |
f792889a | 13614 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
13615 | |
13616 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13617 | { | |
13618 | fields = (struct field *) | |
13619 | xrealloc (fields, | |
13620 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13621 | * sizeof (struct field)); |
c906108c SS |
13622 | } |
13623 | ||
3567439c | 13624 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 13625 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 13626 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
13627 | FIELD_BITSIZE (fields[num_fields]) = 0; |
13628 | ||
13629 | num_fields++; | |
13630 | } | |
13631 | } | |
13632 | ||
13633 | child_die = sibling_die (child_die); | |
13634 | } | |
13635 | ||
13636 | if (num_fields) | |
13637 | { | |
f792889a DJ |
13638 | TYPE_NFIELDS (this_type) = num_fields; |
13639 | TYPE_FIELDS (this_type) = (struct field *) | |
13640 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
13641 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 13642 | sizeof (struct field) * num_fields); |
b8c9b27d | 13643 | xfree (fields); |
c906108c | 13644 | } |
c906108c | 13645 | } |
134d01f1 | 13646 | |
6c83ed52 TT |
13647 | /* If we are reading an enum from a .debug_types unit, and the enum |
13648 | is a declaration, and the enum is not the signatured type in the | |
13649 | unit, then we do not want to add a symbol for it. Adding a | |
13650 | symbol would in some cases obscure the true definition of the | |
13651 | enum, giving users an incomplete type when the definition is | |
13652 | actually available. Note that we do not want to do this for all | |
13653 | enums which are just declarations, because C++0x allows forward | |
13654 | enum declarations. */ | |
3019eac3 | 13655 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
13656 | && die_is_declaration (die, cu)) |
13657 | { | |
52dc124a | 13658 | struct signatured_type *sig_type; |
6c83ed52 | 13659 | |
c0f78cd4 | 13660 | sig_type = (struct signatured_type *) cu->per_cu; |
3019eac3 DE |
13661 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
13662 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
13663 | return; |
13664 | } | |
13665 | ||
f792889a | 13666 | new_symbol (die, this_type, cu); |
c906108c SS |
13667 | } |
13668 | ||
13669 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
13670 | the DIE's type field. For now, this only handles one dimensional | |
13671 | arrays. */ | |
13672 | ||
f792889a | 13673 | static struct type * |
e7c27a73 | 13674 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13675 | { |
e7c27a73 | 13676 | struct objfile *objfile = cu->objfile; |
c906108c | 13677 | struct die_info *child_die; |
7e314c57 | 13678 | struct type *type; |
c906108c SS |
13679 | struct type *element_type, *range_type, *index_type; |
13680 | struct type **range_types = NULL; | |
13681 | struct attribute *attr; | |
13682 | int ndim = 0; | |
13683 | struct cleanup *back_to; | |
15d034d0 | 13684 | const char *name; |
dc53a7ad | 13685 | unsigned int bit_stride = 0; |
c906108c | 13686 | |
e7c27a73 | 13687 | element_type = die_type (die, cu); |
c906108c | 13688 | |
7e314c57 JK |
13689 | /* The die_type call above may have already set the type for this DIE. */ |
13690 | type = get_die_type (die, cu); | |
13691 | if (type) | |
13692 | return type; | |
13693 | ||
dc53a7ad JB |
13694 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
13695 | if (attr != NULL) | |
13696 | bit_stride = DW_UNSND (attr) * 8; | |
13697 | ||
13698 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
13699 | if (attr != NULL) | |
13700 | bit_stride = DW_UNSND (attr); | |
13701 | ||
c906108c SS |
13702 | /* Irix 6.2 native cc creates array types without children for |
13703 | arrays with unspecified length. */ | |
639d11d3 | 13704 | if (die->child == NULL) |
c906108c | 13705 | { |
46bf5051 | 13706 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 13707 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad JB |
13708 | type = create_array_type_with_stride (NULL, element_type, range_type, |
13709 | bit_stride); | |
f792889a | 13710 | return set_die_type (die, type, cu); |
c906108c SS |
13711 | } |
13712 | ||
13713 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 13714 | child_die = die->child; |
c906108c SS |
13715 | while (child_die && child_die->tag) |
13716 | { | |
13717 | if (child_die->tag == DW_TAG_subrange_type) | |
13718 | { | |
f792889a | 13719 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 13720 | |
f792889a | 13721 | if (child_type != NULL) |
a02abb62 | 13722 | { |
0963b4bd MS |
13723 | /* The range type was succesfully read. Save it for the |
13724 | array type creation. */ | |
a02abb62 JB |
13725 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
13726 | { | |
13727 | range_types = (struct type **) | |
13728 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
13729 | * sizeof (struct type *)); | |
13730 | if (ndim == 0) | |
13731 | make_cleanup (free_current_contents, &range_types); | |
13732 | } | |
f792889a | 13733 | range_types[ndim++] = child_type; |
a02abb62 | 13734 | } |
c906108c SS |
13735 | } |
13736 | child_die = sibling_die (child_die); | |
13737 | } | |
13738 | ||
13739 | /* Dwarf2 dimensions are output from left to right, create the | |
13740 | necessary array types in backwards order. */ | |
7ca2d3a3 | 13741 | |
c906108c | 13742 | type = element_type; |
7ca2d3a3 DL |
13743 | |
13744 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
13745 | { | |
13746 | int i = 0; | |
9a619af0 | 13747 | |
7ca2d3a3 | 13748 | while (i < ndim) |
dc53a7ad JB |
13749 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
13750 | bit_stride); | |
7ca2d3a3 DL |
13751 | } |
13752 | else | |
13753 | { | |
13754 | while (ndim-- > 0) | |
dc53a7ad JB |
13755 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
13756 | bit_stride); | |
7ca2d3a3 | 13757 | } |
c906108c | 13758 | |
f5f8a009 EZ |
13759 | /* Understand Dwarf2 support for vector types (like they occur on |
13760 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
13761 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
13762 | custom vendor extension. The main difference between a regular | |
13763 | array and the vector variant is that vectors are passed by value | |
13764 | to functions. */ | |
e142c38c | 13765 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 13766 | if (attr) |
ea37ba09 | 13767 | make_vector_type (type); |
f5f8a009 | 13768 | |
dbc98a8b KW |
13769 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
13770 | implementation may choose to implement triple vectors using this | |
13771 | attribute. */ | |
13772 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
13773 | if (attr) | |
13774 | { | |
13775 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
13776 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13777 | else | |
3e43a32a MS |
13778 | complaint (&symfile_complaints, |
13779 | _("DW_AT_byte_size for array type smaller " | |
13780 | "than the total size of elements")); | |
dbc98a8b KW |
13781 | } |
13782 | ||
39cbfefa DJ |
13783 | name = dwarf2_name (die, cu); |
13784 | if (name) | |
13785 | TYPE_NAME (type) = name; | |
6e70227d | 13786 | |
0963b4bd | 13787 | /* Install the type in the die. */ |
7e314c57 JK |
13788 | set_die_type (die, type, cu); |
13789 | ||
13790 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
13791 | set_descriptive_type (type, die, cu); |
13792 | ||
c906108c SS |
13793 | do_cleanups (back_to); |
13794 | ||
7e314c57 | 13795 | return type; |
c906108c SS |
13796 | } |
13797 | ||
7ca2d3a3 | 13798 | static enum dwarf_array_dim_ordering |
6e70227d | 13799 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
13800 | { |
13801 | struct attribute *attr; | |
13802 | ||
13803 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
13804 | ||
13805 | if (attr) return DW_SND (attr); | |
13806 | ||
0963b4bd MS |
13807 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
13808 | opposite order to the dwarf2 specification, but data is still | |
13809 | laid out as per normal fortran. | |
7ca2d3a3 | 13810 | |
0963b4bd MS |
13811 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
13812 | version checking. */ | |
7ca2d3a3 | 13813 | |
905e0470 PM |
13814 | if (cu->language == language_fortran |
13815 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
13816 | { |
13817 | return DW_ORD_row_major; | |
13818 | } | |
13819 | ||
6e70227d | 13820 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
13821 | { |
13822 | case array_column_major: | |
13823 | return DW_ORD_col_major; | |
13824 | case array_row_major: | |
13825 | default: | |
13826 | return DW_ORD_row_major; | |
13827 | }; | |
13828 | } | |
13829 | ||
72019c9c | 13830 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 13831 | the DIE's type field. */ |
72019c9c | 13832 | |
f792889a | 13833 | static struct type * |
72019c9c GM |
13834 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
13835 | { | |
7e314c57 JK |
13836 | struct type *domain_type, *set_type; |
13837 | struct attribute *attr; | |
f792889a | 13838 | |
7e314c57 JK |
13839 | domain_type = die_type (die, cu); |
13840 | ||
13841 | /* The die_type call above may have already set the type for this DIE. */ | |
13842 | set_type = get_die_type (die, cu); | |
13843 | if (set_type) | |
13844 | return set_type; | |
13845 | ||
13846 | set_type = create_set_type (NULL, domain_type); | |
13847 | ||
13848 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
13849 | if (attr) |
13850 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 13851 | |
f792889a | 13852 | return set_die_type (die, set_type, cu); |
72019c9c | 13853 | } |
7ca2d3a3 | 13854 | |
0971de02 TT |
13855 | /* A helper for read_common_block that creates a locexpr baton. |
13856 | SYM is the symbol which we are marking as computed. | |
13857 | COMMON_DIE is the DIE for the common block. | |
13858 | COMMON_LOC is the location expression attribute for the common | |
13859 | block itself. | |
13860 | MEMBER_LOC is the location expression attribute for the particular | |
13861 | member of the common block that we are processing. | |
13862 | CU is the CU from which the above come. */ | |
13863 | ||
13864 | static void | |
13865 | mark_common_block_symbol_computed (struct symbol *sym, | |
13866 | struct die_info *common_die, | |
13867 | struct attribute *common_loc, | |
13868 | struct attribute *member_loc, | |
13869 | struct dwarf2_cu *cu) | |
13870 | { | |
13871 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13872 | struct dwarf2_locexpr_baton *baton; | |
13873 | gdb_byte *ptr; | |
13874 | unsigned int cu_off; | |
13875 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
13876 | LONGEST offset = 0; | |
13877 | ||
13878 | gdb_assert (common_loc && member_loc); | |
13879 | gdb_assert (attr_form_is_block (common_loc)); | |
13880 | gdb_assert (attr_form_is_block (member_loc) | |
13881 | || attr_form_is_constant (member_loc)); | |
13882 | ||
13883 | baton = obstack_alloc (&objfile->objfile_obstack, | |
13884 | sizeof (struct dwarf2_locexpr_baton)); | |
13885 | baton->per_cu = cu->per_cu; | |
13886 | gdb_assert (baton->per_cu); | |
13887 | ||
13888 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
13889 | ||
13890 | if (attr_form_is_constant (member_loc)) | |
13891 | { | |
13892 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
13893 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
13894 | } | |
13895 | else | |
13896 | baton->size += DW_BLOCK (member_loc)->size; | |
13897 | ||
13898 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
13899 | baton->data = ptr; | |
13900 | ||
13901 | *ptr++ = DW_OP_call4; | |
13902 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
13903 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
13904 | ptr += 4; | |
13905 | ||
13906 | if (attr_form_is_constant (member_loc)) | |
13907 | { | |
13908 | *ptr++ = DW_OP_addr; | |
13909 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
13910 | ptr += cu->header.addr_size; | |
13911 | } | |
13912 | else | |
13913 | { | |
13914 | /* We have to copy the data here, because DW_OP_call4 will only | |
13915 | use a DW_AT_location attribute. */ | |
13916 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
13917 | ptr += DW_BLOCK (member_loc)->size; | |
13918 | } | |
13919 | ||
13920 | *ptr++ = DW_OP_plus; | |
13921 | gdb_assert (ptr - baton->data == baton->size); | |
13922 | ||
0971de02 | 13923 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 13924 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
13925 | } |
13926 | ||
4357ac6c TT |
13927 | /* Create appropriate locally-scoped variables for all the |
13928 | DW_TAG_common_block entries. Also create a struct common_block | |
13929 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
13930 | is used to sepate the common blocks name namespace from regular | |
13931 | variable names. */ | |
c906108c SS |
13932 | |
13933 | static void | |
e7c27a73 | 13934 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13935 | { |
0971de02 TT |
13936 | struct attribute *attr; |
13937 | ||
13938 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13939 | if (attr) | |
13940 | { | |
13941 | /* Support the .debug_loc offsets. */ | |
13942 | if (attr_form_is_block (attr)) | |
13943 | { | |
13944 | /* Ok. */ | |
13945 | } | |
13946 | else if (attr_form_is_section_offset (attr)) | |
13947 | { | |
13948 | dwarf2_complex_location_expr_complaint (); | |
13949 | attr = NULL; | |
13950 | } | |
13951 | else | |
13952 | { | |
13953 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
13954 | "common block member"); | |
13955 | attr = NULL; | |
13956 | } | |
13957 | } | |
13958 | ||
639d11d3 | 13959 | if (die->child != NULL) |
c906108c | 13960 | { |
4357ac6c TT |
13961 | struct objfile *objfile = cu->objfile; |
13962 | struct die_info *child_die; | |
13963 | size_t n_entries = 0, size; | |
13964 | struct common_block *common_block; | |
13965 | struct symbol *sym; | |
74ac6d43 | 13966 | |
4357ac6c TT |
13967 | for (child_die = die->child; |
13968 | child_die && child_die->tag; | |
13969 | child_die = sibling_die (child_die)) | |
13970 | ++n_entries; | |
13971 | ||
13972 | size = (sizeof (struct common_block) | |
13973 | + (n_entries - 1) * sizeof (struct symbol *)); | |
13974 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
13975 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
13976 | common_block->n_entries = 0; | |
13977 | ||
13978 | for (child_die = die->child; | |
13979 | child_die && child_die->tag; | |
13980 | child_die = sibling_die (child_die)) | |
13981 | { | |
13982 | /* Create the symbol in the DW_TAG_common_block block in the current | |
13983 | symbol scope. */ | |
e7c27a73 | 13984 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
13985 | if (sym != NULL) |
13986 | { | |
13987 | struct attribute *member_loc; | |
13988 | ||
13989 | common_block->contents[common_block->n_entries++] = sym; | |
13990 | ||
13991 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
13992 | cu); | |
13993 | if (member_loc) | |
13994 | { | |
13995 | /* GDB has handled this for a long time, but it is | |
13996 | not specified by DWARF. It seems to have been | |
13997 | emitted by gfortran at least as recently as: | |
13998 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
13999 | complaint (&symfile_complaints, | |
14000 | _("Variable in common block has " | |
14001 | "DW_AT_data_member_location " | |
14002 | "- DIE at 0x%x [in module %s]"), | |
4262abfb JK |
14003 | child_die->offset.sect_off, |
14004 | objfile_name (cu->objfile)); | |
0971de02 TT |
14005 | |
14006 | if (attr_form_is_section_offset (member_loc)) | |
14007 | dwarf2_complex_location_expr_complaint (); | |
14008 | else if (attr_form_is_constant (member_loc) | |
14009 | || attr_form_is_block (member_loc)) | |
14010 | { | |
14011 | if (attr) | |
14012 | mark_common_block_symbol_computed (sym, die, attr, | |
14013 | member_loc, cu); | |
14014 | } | |
14015 | else | |
14016 | dwarf2_complex_location_expr_complaint (); | |
14017 | } | |
14018 | } | |
c906108c | 14019 | } |
4357ac6c TT |
14020 | |
14021 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
14022 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
14023 | } |
14024 | } | |
14025 | ||
0114d602 | 14026 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 14027 | |
0114d602 DJ |
14028 | static struct type * |
14029 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 14030 | { |
e7c27a73 | 14031 | struct objfile *objfile = cu->objfile; |
0114d602 | 14032 | const char *previous_prefix, *name; |
9219021c | 14033 | int is_anonymous; |
0114d602 DJ |
14034 | struct type *type; |
14035 | ||
14036 | /* For extensions, reuse the type of the original namespace. */ | |
14037 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
14038 | { | |
14039 | struct die_info *ext_die; | |
14040 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 14041 | |
0114d602 DJ |
14042 | ext_die = dwarf2_extension (die, &ext_cu); |
14043 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
14044 | |
14045 | /* EXT_CU may not be the same as CU. | |
02142a6c | 14046 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
14047 | return set_die_type (die, type, cu); |
14048 | } | |
9219021c | 14049 | |
e142c38c | 14050 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
14051 | |
14052 | /* Now build the name of the current namespace. */ | |
14053 | ||
0114d602 DJ |
14054 | previous_prefix = determine_prefix (die, cu); |
14055 | if (previous_prefix[0] != '\0') | |
14056 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 14057 | previous_prefix, name, 0, cu); |
0114d602 DJ |
14058 | |
14059 | /* Create the type. */ | |
14060 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
14061 | objfile); | |
abee88f2 | 14062 | TYPE_NAME (type) = name; |
0114d602 DJ |
14063 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
14064 | ||
60531b24 | 14065 | return set_die_type (die, type, cu); |
0114d602 DJ |
14066 | } |
14067 | ||
14068 | /* Read a C++ namespace. */ | |
14069 | ||
14070 | static void | |
14071 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
14072 | { | |
14073 | struct objfile *objfile = cu->objfile; | |
0114d602 | 14074 | int is_anonymous; |
9219021c | 14075 | |
5c4e30ca DC |
14076 | /* Add a symbol associated to this if we haven't seen the namespace |
14077 | before. Also, add a using directive if it's an anonymous | |
14078 | namespace. */ | |
9219021c | 14079 | |
f2f0e013 | 14080 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
14081 | { |
14082 | struct type *type; | |
14083 | ||
0114d602 | 14084 | type = read_type_die (die, cu); |
e7c27a73 | 14085 | new_symbol (die, type, cu); |
5c4e30ca | 14086 | |
e8e80198 | 14087 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 14088 | if (is_anonymous) |
0114d602 DJ |
14089 | { |
14090 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 14091 | |
c0cc3a76 | 14092 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
12aaed36 | 14093 | NULL, NULL, 0, &objfile->objfile_obstack); |
0114d602 | 14094 | } |
5c4e30ca | 14095 | } |
9219021c | 14096 | |
639d11d3 | 14097 | if (die->child != NULL) |
d9fa45fe | 14098 | { |
639d11d3 | 14099 | struct die_info *child_die = die->child; |
6e70227d | 14100 | |
d9fa45fe DC |
14101 | while (child_die && child_die->tag) |
14102 | { | |
e7c27a73 | 14103 | process_die (child_die, cu); |
d9fa45fe DC |
14104 | child_die = sibling_die (child_die); |
14105 | } | |
14106 | } | |
38d518c9 EZ |
14107 | } |
14108 | ||
f55ee35c JK |
14109 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
14110 | imported module. Still we need that type as local Fortran "use ... only" | |
14111 | declaration imports depend on the created type in determine_prefix. */ | |
14112 | ||
14113 | static struct type * | |
14114 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
14115 | { | |
14116 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 14117 | const char *module_name; |
f55ee35c JK |
14118 | struct type *type; |
14119 | ||
14120 | module_name = dwarf2_name (die, cu); | |
14121 | if (!module_name) | |
3e43a32a MS |
14122 | complaint (&symfile_complaints, |
14123 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 14124 | die->offset.sect_off); |
f55ee35c JK |
14125 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
14126 | ||
14127 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
14128 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
14129 | ||
14130 | return set_die_type (die, type, cu); | |
14131 | } | |
14132 | ||
5d7cb8df JK |
14133 | /* Read a Fortran module. */ |
14134 | ||
14135 | static void | |
14136 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
14137 | { | |
14138 | struct die_info *child_die = die->child; | |
530e8392 KB |
14139 | struct type *type; |
14140 | ||
14141 | type = read_type_die (die, cu); | |
14142 | new_symbol (die, type, cu); | |
5d7cb8df | 14143 | |
5d7cb8df JK |
14144 | while (child_die && child_die->tag) |
14145 | { | |
14146 | process_die (child_die, cu); | |
14147 | child_die = sibling_die (child_die); | |
14148 | } | |
14149 | } | |
14150 | ||
38d518c9 EZ |
14151 | /* Return the name of the namespace represented by DIE. Set |
14152 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
14153 | namespace. */ | |
14154 | ||
14155 | static const char * | |
e142c38c | 14156 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
14157 | { |
14158 | struct die_info *current_die; | |
14159 | const char *name = NULL; | |
14160 | ||
14161 | /* Loop through the extensions until we find a name. */ | |
14162 | ||
14163 | for (current_die = die; | |
14164 | current_die != NULL; | |
f2f0e013 | 14165 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 14166 | { |
96553a0c DE |
14167 | /* We don't use dwarf2_name here so that we can detect the absence |
14168 | of a name -> anonymous namespace. */ | |
14169 | struct attribute *attr = dwarf2_attr (die, DW_AT_name, cu); | |
14170 | ||
14171 | if (attr != NULL) | |
14172 | name = DW_STRING (attr); | |
38d518c9 EZ |
14173 | if (name != NULL) |
14174 | break; | |
14175 | } | |
14176 | ||
14177 | /* Is it an anonymous namespace? */ | |
14178 | ||
14179 | *is_anonymous = (name == NULL); | |
14180 | if (*is_anonymous) | |
2b1dbab0 | 14181 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
14182 | |
14183 | return name; | |
d9fa45fe DC |
14184 | } |
14185 | ||
c906108c SS |
14186 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
14187 | the user defined type vector. */ | |
14188 | ||
f792889a | 14189 | static struct type * |
e7c27a73 | 14190 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14191 | { |
5e2b427d | 14192 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 14193 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 14194 | struct type *type; |
8b2dbe47 KB |
14195 | struct attribute *attr_byte_size; |
14196 | struct attribute *attr_address_class; | |
14197 | int byte_size, addr_class; | |
7e314c57 JK |
14198 | struct type *target_type; |
14199 | ||
14200 | target_type = die_type (die, cu); | |
c906108c | 14201 | |
7e314c57 JK |
14202 | /* The die_type call above may have already set the type for this DIE. */ |
14203 | type = get_die_type (die, cu); | |
14204 | if (type) | |
14205 | return type; | |
14206 | ||
14207 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 14208 | |
e142c38c | 14209 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
14210 | if (attr_byte_size) |
14211 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 14212 | else |
8b2dbe47 KB |
14213 | byte_size = cu_header->addr_size; |
14214 | ||
e142c38c | 14215 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
14216 | if (attr_address_class) |
14217 | addr_class = DW_UNSND (attr_address_class); | |
14218 | else | |
14219 | addr_class = DW_ADDR_none; | |
14220 | ||
14221 | /* If the pointer size or address class is different than the | |
14222 | default, create a type variant marked as such and set the | |
14223 | length accordingly. */ | |
14224 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 14225 | { |
5e2b427d | 14226 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
14227 | { |
14228 | int type_flags; | |
14229 | ||
849957d9 | 14230 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 14231 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
14232 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
14233 | == 0); | |
8b2dbe47 KB |
14234 | type = make_type_with_address_space (type, type_flags); |
14235 | } | |
14236 | else if (TYPE_LENGTH (type) != byte_size) | |
14237 | { | |
3e43a32a MS |
14238 | complaint (&symfile_complaints, |
14239 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 14240 | } |
6e70227d | 14241 | else |
9a619af0 MS |
14242 | { |
14243 | /* Should we also complain about unhandled address classes? */ | |
14244 | } | |
c906108c | 14245 | } |
8b2dbe47 KB |
14246 | |
14247 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 14248 | return set_die_type (die, type, cu); |
c906108c SS |
14249 | } |
14250 | ||
14251 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
14252 | the user defined type vector. */ | |
14253 | ||
f792889a | 14254 | static struct type * |
e7c27a73 | 14255 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
14256 | { |
14257 | struct type *type; | |
14258 | struct type *to_type; | |
14259 | struct type *domain; | |
14260 | ||
e7c27a73 DJ |
14261 | to_type = die_type (die, cu); |
14262 | domain = die_containing_type (die, cu); | |
0d5de010 | 14263 | |
7e314c57 JK |
14264 | /* The calls above may have already set the type for this DIE. */ |
14265 | type = get_die_type (die, cu); | |
14266 | if (type) | |
14267 | return type; | |
14268 | ||
0d5de010 DJ |
14269 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
14270 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
14271 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
14272 | { | |
14273 | struct type *new_type = alloc_type (cu->objfile); | |
14274 | ||
14275 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
14276 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
14277 | TYPE_VARARGS (to_type)); | |
14278 | type = lookup_methodptr_type (new_type); | |
14279 | } | |
0d5de010 DJ |
14280 | else |
14281 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 14282 | |
f792889a | 14283 | return set_die_type (die, type, cu); |
c906108c SS |
14284 | } |
14285 | ||
14286 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
14287 | the user defined type vector. */ | |
14288 | ||
f792889a | 14289 | static struct type * |
e7c27a73 | 14290 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14291 | { |
e7c27a73 | 14292 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 14293 | struct type *type, *target_type; |
c906108c SS |
14294 | struct attribute *attr; |
14295 | ||
7e314c57 JK |
14296 | target_type = die_type (die, cu); |
14297 | ||
14298 | /* The die_type call above may have already set the type for this DIE. */ | |
14299 | type = get_die_type (die, cu); | |
14300 | if (type) | |
14301 | return type; | |
14302 | ||
14303 | type = lookup_reference_type (target_type); | |
e142c38c | 14304 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14305 | if (attr) |
14306 | { | |
14307 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
14308 | } | |
14309 | else | |
14310 | { | |
107d2387 | 14311 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 14312 | } |
f792889a | 14313 | return set_die_type (die, type, cu); |
c906108c SS |
14314 | } |
14315 | ||
cf363f18 MW |
14316 | /* Add the given cv-qualifiers to the element type of the array. GCC |
14317 | outputs DWARF type qualifiers that apply to an array, not the | |
14318 | element type. But GDB relies on the array element type to carry | |
14319 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
14320 | specification. */ | |
14321 | ||
14322 | static struct type * | |
14323 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
14324 | struct type *base_type, int cnst, int voltl) | |
14325 | { | |
14326 | struct type *el_type, *inner_array; | |
14327 | ||
14328 | base_type = copy_type (base_type); | |
14329 | inner_array = base_type; | |
14330 | ||
14331 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
14332 | { | |
14333 | TYPE_TARGET_TYPE (inner_array) = | |
14334 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
14335 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
14336 | } | |
14337 | ||
14338 | el_type = TYPE_TARGET_TYPE (inner_array); | |
14339 | cnst |= TYPE_CONST (el_type); | |
14340 | voltl |= TYPE_VOLATILE (el_type); | |
14341 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
14342 | ||
14343 | return set_die_type (die, base_type, cu); | |
14344 | } | |
14345 | ||
f792889a | 14346 | static struct type * |
e7c27a73 | 14347 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14348 | { |
f792889a | 14349 | struct type *base_type, *cv_type; |
c906108c | 14350 | |
e7c27a73 | 14351 | base_type = die_type (die, cu); |
7e314c57 JK |
14352 | |
14353 | /* The die_type call above may have already set the type for this DIE. */ | |
14354 | cv_type = get_die_type (die, cu); | |
14355 | if (cv_type) | |
14356 | return cv_type; | |
14357 | ||
2f608a3a KW |
14358 | /* In case the const qualifier is applied to an array type, the element type |
14359 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
14360 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 14361 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 14362 | |
f792889a DJ |
14363 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
14364 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14365 | } |
14366 | ||
f792889a | 14367 | static struct type * |
e7c27a73 | 14368 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14369 | { |
f792889a | 14370 | struct type *base_type, *cv_type; |
c906108c | 14371 | |
e7c27a73 | 14372 | base_type = die_type (die, cu); |
7e314c57 JK |
14373 | |
14374 | /* The die_type call above may have already set the type for this DIE. */ | |
14375 | cv_type = get_die_type (die, cu); | |
14376 | if (cv_type) | |
14377 | return cv_type; | |
14378 | ||
cf363f18 MW |
14379 | /* In case the volatile qualifier is applied to an array type, the |
14380 | element type is so qualified, not the array type (section 6.7.3 | |
14381 | of C99). */ | |
14382 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
14383 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
14384 | ||
f792889a DJ |
14385 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
14386 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14387 | } |
14388 | ||
06d66ee9 TT |
14389 | /* Handle DW_TAG_restrict_type. */ |
14390 | ||
14391 | static struct type * | |
14392 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
14393 | { | |
14394 | struct type *base_type, *cv_type; | |
14395 | ||
14396 | base_type = die_type (die, cu); | |
14397 | ||
14398 | /* The die_type call above may have already set the type for this DIE. */ | |
14399 | cv_type = get_die_type (die, cu); | |
14400 | if (cv_type) | |
14401 | return cv_type; | |
14402 | ||
14403 | cv_type = make_restrict_type (base_type); | |
14404 | return set_die_type (die, cv_type, cu); | |
14405 | } | |
14406 | ||
a2c2acaf MW |
14407 | /* Handle DW_TAG_atomic_type. */ |
14408 | ||
14409 | static struct type * | |
14410 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
14411 | { | |
14412 | struct type *base_type, *cv_type; | |
14413 | ||
14414 | base_type = die_type (die, cu); | |
14415 | ||
14416 | /* The die_type call above may have already set the type for this DIE. */ | |
14417 | cv_type = get_die_type (die, cu); | |
14418 | if (cv_type) | |
14419 | return cv_type; | |
14420 | ||
14421 | cv_type = make_atomic_type (base_type); | |
14422 | return set_die_type (die, cv_type, cu); | |
14423 | } | |
14424 | ||
c906108c SS |
14425 | /* Extract all information from a DW_TAG_string_type DIE and add to |
14426 | the user defined type vector. It isn't really a user defined type, | |
14427 | but it behaves like one, with other DIE's using an AT_user_def_type | |
14428 | attribute to reference it. */ | |
14429 | ||
f792889a | 14430 | static struct type * |
e7c27a73 | 14431 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14432 | { |
e7c27a73 | 14433 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 14434 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14435 | struct type *type, *range_type, *index_type, *char_type; |
14436 | struct attribute *attr; | |
14437 | unsigned int length; | |
14438 | ||
e142c38c | 14439 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
14440 | if (attr) |
14441 | { | |
14442 | length = DW_UNSND (attr); | |
14443 | } | |
14444 | else | |
14445 | { | |
0963b4bd | 14446 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 14447 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
14448 | if (attr) |
14449 | { | |
14450 | length = DW_UNSND (attr); | |
14451 | } | |
14452 | else | |
14453 | { | |
14454 | length = 1; | |
14455 | } | |
c906108c | 14456 | } |
6ccb9162 | 14457 | |
46bf5051 | 14458 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 14459 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
14460 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
14461 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 14462 | |
f792889a | 14463 | return set_die_type (die, type, cu); |
c906108c SS |
14464 | } |
14465 | ||
4d804846 JB |
14466 | /* Assuming that DIE corresponds to a function, returns nonzero |
14467 | if the function is prototyped. */ | |
14468 | ||
14469 | static int | |
14470 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
14471 | { | |
14472 | struct attribute *attr; | |
14473 | ||
14474 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
14475 | if (attr && (DW_UNSND (attr) != 0)) | |
14476 | return 1; | |
14477 | ||
14478 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
14479 | is only meaninful for C, but the concept also extends to other | |
14480 | languages that allow unprototyped functions (Eg: Objective C). | |
14481 | For all other languages, assume that functions are always | |
14482 | prototyped. */ | |
14483 | if (cu->language != language_c | |
14484 | && cu->language != language_objc | |
14485 | && cu->language != language_opencl) | |
14486 | return 1; | |
14487 | ||
14488 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
14489 | prototyped and unprototyped functions; default to prototyped, | |
14490 | since that is more common in modern code (and RealView warns | |
14491 | about unprototyped functions). */ | |
14492 | if (producer_is_realview (cu->producer)) | |
14493 | return 1; | |
14494 | ||
14495 | return 0; | |
14496 | } | |
14497 | ||
c906108c SS |
14498 | /* Handle DIES due to C code like: |
14499 | ||
14500 | struct foo | |
c5aa993b JM |
14501 | { |
14502 | int (*funcp)(int a, long l); | |
14503 | int b; | |
14504 | }; | |
c906108c | 14505 | |
0963b4bd | 14506 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 14507 | |
f792889a | 14508 | static struct type * |
e7c27a73 | 14509 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14510 | { |
bb5ed363 | 14511 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
14512 | struct type *type; /* Type that this function returns. */ |
14513 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
14514 | struct attribute *attr; |
14515 | ||
e7c27a73 | 14516 | type = die_type (die, cu); |
7e314c57 JK |
14517 | |
14518 | /* The die_type call above may have already set the type for this DIE. */ | |
14519 | ftype = get_die_type (die, cu); | |
14520 | if (ftype) | |
14521 | return ftype; | |
14522 | ||
0c8b41f1 | 14523 | ftype = lookup_function_type (type); |
c906108c | 14524 | |
4d804846 | 14525 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 14526 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 14527 | |
c055b101 CV |
14528 | /* Store the calling convention in the type if it's available in |
14529 | the subroutine die. Otherwise set the calling convention to | |
14530 | the default value DW_CC_normal. */ | |
14531 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
14532 | if (attr) |
14533 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
14534 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
14535 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
14536 | else | |
14537 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 14538 | |
743649fd MW |
14539 | /* Record whether the function returns normally to its caller or not |
14540 | if the DWARF producer set that information. */ | |
14541 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
14542 | if (attr && (DW_UNSND (attr) != 0)) | |
14543 | TYPE_NO_RETURN (ftype) = 1; | |
14544 | ||
76c10ea2 GM |
14545 | /* We need to add the subroutine type to the die immediately so |
14546 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 14547 | declared as the same subroutine type. */ |
76c10ea2 | 14548 | set_die_type (die, ftype, cu); |
6e70227d | 14549 | |
639d11d3 | 14550 | if (die->child != NULL) |
c906108c | 14551 | { |
bb5ed363 | 14552 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 14553 | struct die_info *child_die; |
8072405b | 14554 | int nparams, iparams; |
c906108c SS |
14555 | |
14556 | /* Count the number of parameters. | |
14557 | FIXME: GDB currently ignores vararg functions, but knows about | |
14558 | vararg member functions. */ | |
8072405b | 14559 | nparams = 0; |
639d11d3 | 14560 | child_die = die->child; |
c906108c SS |
14561 | while (child_die && child_die->tag) |
14562 | { | |
14563 | if (child_die->tag == DW_TAG_formal_parameter) | |
14564 | nparams++; | |
14565 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 14566 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
14567 | child_die = sibling_die (child_die); |
14568 | } | |
14569 | ||
14570 | /* Allocate storage for parameters and fill them in. */ | |
14571 | TYPE_NFIELDS (ftype) = nparams; | |
14572 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 14573 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 14574 | |
8072405b JK |
14575 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
14576 | even if we error out during the parameters reading below. */ | |
14577 | for (iparams = 0; iparams < nparams; iparams++) | |
14578 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
14579 | ||
14580 | iparams = 0; | |
639d11d3 | 14581 | child_die = die->child; |
c906108c SS |
14582 | while (child_die && child_die->tag) |
14583 | { | |
14584 | if (child_die->tag == DW_TAG_formal_parameter) | |
14585 | { | |
3ce3b1ba PA |
14586 | struct type *arg_type; |
14587 | ||
14588 | /* DWARF version 2 has no clean way to discern C++ | |
14589 | static and non-static member functions. G++ helps | |
14590 | GDB by marking the first parameter for non-static | |
14591 | member functions (which is the this pointer) as | |
14592 | artificial. We pass this information to | |
14593 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
14594 | ||
14595 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
14596 | 4.5 does not yet generate. */ | |
e142c38c | 14597 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
14598 | if (attr) |
14599 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
14600 | else | |
418835cc KS |
14601 | { |
14602 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
14603 | ||
14604 | /* GCC/43521: In java, the formal parameter | |
14605 | "this" is sometimes not marked with DW_AT_artificial. */ | |
14606 | if (cu->language == language_java) | |
14607 | { | |
14608 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 14609 | |
418835cc KS |
14610 | if (name && !strcmp (name, "this")) |
14611 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
14612 | } | |
14613 | } | |
3ce3b1ba PA |
14614 | arg_type = die_type (child_die, cu); |
14615 | ||
14616 | /* RealView does not mark THIS as const, which the testsuite | |
14617 | expects. GCC marks THIS as const in method definitions, | |
14618 | but not in the class specifications (GCC PR 43053). */ | |
14619 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
14620 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
14621 | { | |
14622 | int is_this = 0; | |
14623 | struct dwarf2_cu *arg_cu = cu; | |
14624 | const char *name = dwarf2_name (child_die, cu); | |
14625 | ||
14626 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
14627 | if (attr) | |
14628 | { | |
14629 | /* If the compiler emits this, use it. */ | |
14630 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
14631 | is_this = 1; | |
14632 | } | |
14633 | else if (name && strcmp (name, "this") == 0) | |
14634 | /* Function definitions will have the argument names. */ | |
14635 | is_this = 1; | |
14636 | else if (name == NULL && iparams == 0) | |
14637 | /* Declarations may not have the names, so like | |
14638 | elsewhere in GDB, assume an artificial first | |
14639 | argument is "this". */ | |
14640 | is_this = 1; | |
14641 | ||
14642 | if (is_this) | |
14643 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
14644 | arg_type, 0); | |
14645 | } | |
14646 | ||
14647 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
14648 | iparams++; |
14649 | } | |
14650 | child_die = sibling_die (child_die); | |
14651 | } | |
14652 | } | |
14653 | ||
76c10ea2 | 14654 | return ftype; |
c906108c SS |
14655 | } |
14656 | ||
f792889a | 14657 | static struct type * |
e7c27a73 | 14658 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14659 | { |
e7c27a73 | 14660 | struct objfile *objfile = cu->objfile; |
0114d602 | 14661 | const char *name = NULL; |
3c8e0968 | 14662 | struct type *this_type, *target_type; |
c906108c | 14663 | |
94af9270 | 14664 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 14665 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 | 14666 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
abee88f2 | 14667 | TYPE_NAME (this_type) = name; |
f792889a | 14668 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
14669 | target_type = die_type (die, cu); |
14670 | if (target_type != this_type) | |
14671 | TYPE_TARGET_TYPE (this_type) = target_type; | |
14672 | else | |
14673 | { | |
14674 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
14675 | spec and cause infinite loops in GDB. */ | |
14676 | complaint (&symfile_complaints, | |
14677 | _("Self-referential DW_TAG_typedef " | |
14678 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14679 | die->offset.sect_off, objfile_name (objfile)); |
3c8e0968 DE |
14680 | TYPE_TARGET_TYPE (this_type) = NULL; |
14681 | } | |
f792889a | 14682 | return this_type; |
c906108c SS |
14683 | } |
14684 | ||
14685 | /* Find a representation of a given base type and install | |
14686 | it in the TYPE field of the die. */ | |
14687 | ||
f792889a | 14688 | static struct type * |
e7c27a73 | 14689 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14690 | { |
e7c27a73 | 14691 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14692 | struct type *type; |
14693 | struct attribute *attr; | |
14694 | int encoding = 0, size = 0; | |
15d034d0 | 14695 | const char *name; |
6ccb9162 UW |
14696 | enum type_code code = TYPE_CODE_INT; |
14697 | int type_flags = 0; | |
14698 | struct type *target_type = NULL; | |
c906108c | 14699 | |
e142c38c | 14700 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
14701 | if (attr) |
14702 | { | |
14703 | encoding = DW_UNSND (attr); | |
14704 | } | |
e142c38c | 14705 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14706 | if (attr) |
14707 | { | |
14708 | size = DW_UNSND (attr); | |
14709 | } | |
39cbfefa | 14710 | name = dwarf2_name (die, cu); |
6ccb9162 | 14711 | if (!name) |
c906108c | 14712 | { |
6ccb9162 UW |
14713 | complaint (&symfile_complaints, |
14714 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 14715 | } |
6ccb9162 UW |
14716 | |
14717 | switch (encoding) | |
c906108c | 14718 | { |
6ccb9162 UW |
14719 | case DW_ATE_address: |
14720 | /* Turn DW_ATE_address into a void * pointer. */ | |
14721 | code = TYPE_CODE_PTR; | |
14722 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14723 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
14724 | break; | |
14725 | case DW_ATE_boolean: | |
14726 | code = TYPE_CODE_BOOL; | |
14727 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14728 | break; | |
14729 | case DW_ATE_complex_float: | |
14730 | code = TYPE_CODE_COMPLEX; | |
14731 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
14732 | break; | |
14733 | case DW_ATE_decimal_float: | |
14734 | code = TYPE_CODE_DECFLOAT; | |
14735 | break; | |
14736 | case DW_ATE_float: | |
14737 | code = TYPE_CODE_FLT; | |
14738 | break; | |
14739 | case DW_ATE_signed: | |
14740 | break; | |
14741 | case DW_ATE_unsigned: | |
14742 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
14743 | if (cu->language == language_fortran |
14744 | && name | |
61012eef | 14745 | && startswith (name, "character(")) |
3b2b8fea | 14746 | code = TYPE_CODE_CHAR; |
6ccb9162 UW |
14747 | break; |
14748 | case DW_ATE_signed_char: | |
6e70227d | 14749 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14750 | || cu->language == language_pascal |
14751 | || cu->language == language_fortran) | |
6ccb9162 UW |
14752 | code = TYPE_CODE_CHAR; |
14753 | break; | |
14754 | case DW_ATE_unsigned_char: | |
868a0084 | 14755 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14756 | || cu->language == language_pascal |
14757 | || cu->language == language_fortran) | |
6ccb9162 UW |
14758 | code = TYPE_CODE_CHAR; |
14759 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14760 | break; | |
75079b2b TT |
14761 | case DW_ATE_UTF: |
14762 | /* We just treat this as an integer and then recognize the | |
14763 | type by name elsewhere. */ | |
14764 | break; | |
14765 | ||
6ccb9162 UW |
14766 | default: |
14767 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
14768 | dwarf_type_encoding_name (encoding)); | |
14769 | break; | |
c906108c | 14770 | } |
6ccb9162 | 14771 | |
0114d602 DJ |
14772 | type = init_type (code, size, type_flags, NULL, objfile); |
14773 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
14774 | TYPE_TARGET_TYPE (type) = target_type; |
14775 | ||
0114d602 | 14776 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 14777 | TYPE_NOSIGN (type) = 1; |
0114d602 | 14778 | |
f792889a | 14779 | return set_die_type (die, type, cu); |
c906108c SS |
14780 | } |
14781 | ||
80180f79 SA |
14782 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
14783 | resulting value of the attribute into struct bound_prop. | |
14784 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
14785 | ||
14786 | static int | |
14787 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
14788 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
14789 | { | |
14790 | struct dwarf2_property_baton *baton; | |
14791 | struct obstack *obstack = &cu->objfile->objfile_obstack; | |
14792 | ||
14793 | if (attr == NULL || prop == NULL) | |
14794 | return 0; | |
14795 | ||
14796 | if (attr_form_is_block (attr)) | |
14797 | { | |
14798 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14799 | baton->referenced_type = NULL; | |
14800 | baton->locexpr.per_cu = cu->per_cu; | |
14801 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
14802 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
14803 | prop->data.baton = baton; | |
14804 | prop->kind = PROP_LOCEXPR; | |
14805 | gdb_assert (prop->data.baton != NULL); | |
14806 | } | |
14807 | else if (attr_form_is_ref (attr)) | |
14808 | { | |
14809 | struct dwarf2_cu *target_cu = cu; | |
14810 | struct die_info *target_die; | |
14811 | struct attribute *target_attr; | |
14812 | ||
14813 | target_die = follow_die_ref (die, attr, &target_cu); | |
14814 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
14815 | if (target_attr == NULL) |
14816 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
14817 | target_cu); | |
80180f79 SA |
14818 | if (target_attr == NULL) |
14819 | return 0; | |
14820 | ||
df25ebbd | 14821 | switch (target_attr->name) |
80180f79 | 14822 | { |
df25ebbd JB |
14823 | case DW_AT_location: |
14824 | if (attr_form_is_section_offset (target_attr)) | |
14825 | { | |
14826 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14827 | baton->referenced_type = die_type (target_die, target_cu); | |
14828 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
14829 | prop->data.baton = baton; | |
14830 | prop->kind = PROP_LOCLIST; | |
14831 | gdb_assert (prop->data.baton != NULL); | |
14832 | } | |
14833 | else if (attr_form_is_block (target_attr)) | |
14834 | { | |
14835 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14836 | baton->referenced_type = die_type (target_die, target_cu); | |
14837 | baton->locexpr.per_cu = cu->per_cu; | |
14838 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
14839 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
14840 | prop->data.baton = baton; | |
14841 | prop->kind = PROP_LOCEXPR; | |
14842 | gdb_assert (prop->data.baton != NULL); | |
14843 | } | |
14844 | else | |
14845 | { | |
14846 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
14847 | "dynamic property"); | |
14848 | return 0; | |
14849 | } | |
14850 | break; | |
14851 | case DW_AT_data_member_location: | |
14852 | { | |
14853 | LONGEST offset; | |
14854 | ||
14855 | if (!handle_data_member_location (target_die, target_cu, | |
14856 | &offset)) | |
14857 | return 0; | |
14858 | ||
14859 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
6ad395a7 JB |
14860 | baton->referenced_type = read_type_die (target_die->parent, |
14861 | target_cu); | |
df25ebbd JB |
14862 | baton->offset_info.offset = offset; |
14863 | baton->offset_info.type = die_type (target_die, target_cu); | |
14864 | prop->data.baton = baton; | |
14865 | prop->kind = PROP_ADDR_OFFSET; | |
14866 | break; | |
14867 | } | |
80180f79 SA |
14868 | } |
14869 | } | |
14870 | else if (attr_form_is_constant (attr)) | |
14871 | { | |
14872 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
14873 | prop->kind = PROP_CONST; | |
14874 | } | |
14875 | else | |
14876 | { | |
14877 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
14878 | dwarf2_name (die, cu)); | |
14879 | return 0; | |
14880 | } | |
14881 | ||
14882 | return 1; | |
14883 | } | |
14884 | ||
a02abb62 JB |
14885 | /* Read the given DW_AT_subrange DIE. */ |
14886 | ||
f792889a | 14887 | static struct type * |
a02abb62 JB |
14888 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
14889 | { | |
4c9ad8c2 | 14890 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
14891 | struct type *range_type; |
14892 | struct attribute *attr; | |
729efb13 | 14893 | struct dynamic_prop low, high; |
4fae6e18 | 14894 | int low_default_is_valid; |
c451ebe5 | 14895 | int high_bound_is_count = 0; |
15d034d0 | 14896 | const char *name; |
43bbcdc2 | 14897 | LONGEST negative_mask; |
e77813c8 | 14898 | |
4c9ad8c2 TT |
14899 | orig_base_type = die_type (die, cu); |
14900 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
14901 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
14902 | creating the range type, but we use the result of check_typedef | |
14903 | when examining properties of the type. */ | |
14904 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 14905 | |
7e314c57 JK |
14906 | /* The die_type call above may have already set the type for this DIE. */ |
14907 | range_type = get_die_type (die, cu); | |
14908 | if (range_type) | |
14909 | return range_type; | |
14910 | ||
729efb13 SA |
14911 | low.kind = PROP_CONST; |
14912 | high.kind = PROP_CONST; | |
14913 | high.data.const_val = 0; | |
14914 | ||
4fae6e18 JK |
14915 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
14916 | omitting DW_AT_lower_bound. */ | |
14917 | switch (cu->language) | |
6e70227d | 14918 | { |
4fae6e18 JK |
14919 | case language_c: |
14920 | case language_cplus: | |
729efb13 | 14921 | low.data.const_val = 0; |
4fae6e18 JK |
14922 | low_default_is_valid = 1; |
14923 | break; | |
14924 | case language_fortran: | |
729efb13 | 14925 | low.data.const_val = 1; |
4fae6e18 JK |
14926 | low_default_is_valid = 1; |
14927 | break; | |
14928 | case language_d: | |
14929 | case language_java: | |
14930 | case language_objc: | |
729efb13 | 14931 | low.data.const_val = 0; |
4fae6e18 JK |
14932 | low_default_is_valid = (cu->header.version >= 4); |
14933 | break; | |
14934 | case language_ada: | |
14935 | case language_m2: | |
14936 | case language_pascal: | |
729efb13 | 14937 | low.data.const_val = 1; |
4fae6e18 JK |
14938 | low_default_is_valid = (cu->header.version >= 4); |
14939 | break; | |
14940 | default: | |
729efb13 | 14941 | low.data.const_val = 0; |
4fae6e18 JK |
14942 | low_default_is_valid = 0; |
14943 | break; | |
a02abb62 JB |
14944 | } |
14945 | ||
e142c38c | 14946 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 14947 | if (attr) |
11c1ba78 | 14948 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
14949 | else if (!low_default_is_valid) |
14950 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
14951 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14952 | die->offset.sect_off, objfile_name (cu->objfile)); |
a02abb62 | 14953 | |
e142c38c | 14954 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 14955 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
14956 | { |
14957 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 14958 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 14959 | { |
c451ebe5 SA |
14960 | /* If bounds are constant do the final calculation here. */ |
14961 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
14962 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
14963 | else | |
14964 | high_bound_is_count = 1; | |
c2ff108b | 14965 | } |
e77813c8 PM |
14966 | } |
14967 | ||
14968 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
14969 | without specifying a base type. | |
14970 | In that case, the base type must be set to the type of | |
14971 | the lower bound, upper bound or count, in that order, if any of these | |
14972 | three attributes references an object that has a type. | |
14973 | If no base type is found, the Dwarf-2 specifications say that | |
14974 | a signed integer type of size equal to the size of an address should | |
14975 | be used. | |
14976 | For the following C code: `extern char gdb_int [];' | |
14977 | GCC produces an empty range DIE. | |
14978 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 14979 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
14980 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
14981 | { | |
14982 | struct objfile *objfile = cu->objfile; | |
14983 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
14984 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
14985 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
14986 | ||
14987 | /* Test "int", "long int", and "long long int" objfile types, | |
14988 | and select the first one having a size above or equal to the | |
14989 | architecture address size. */ | |
14990 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14991 | base_type = int_type; | |
14992 | else | |
14993 | { | |
14994 | int_type = objfile_type (objfile)->builtin_long; | |
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_long; | |
15000 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15001 | base_type = int_type; | |
15002 | } | |
15003 | } | |
15004 | } | |
a02abb62 | 15005 | |
dbb9c2b1 JB |
15006 | /* Normally, the DWARF producers are expected to use a signed |
15007 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
15008 | But this is unfortunately not always the case, as witnessed | |
15009 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
15010 | is used instead. To work around that ambiguity, we treat | |
15011 | the bounds as signed, and thus sign-extend their values, when | |
15012 | the base type is signed. */ | |
6e70227d | 15013 | negative_mask = |
43bbcdc2 | 15014 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
729efb13 SA |
15015 | if (low.kind == PROP_CONST |
15016 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
15017 | low.data.const_val |= negative_mask; | |
15018 | if (high.kind == PROP_CONST | |
15019 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
15020 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 15021 | |
729efb13 | 15022 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 15023 | |
c451ebe5 SA |
15024 | if (high_bound_is_count) |
15025 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
15026 | ||
c2ff108b JK |
15027 | /* Ada expects an empty array on no boundary attributes. */ |
15028 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 15029 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 15030 | |
39cbfefa DJ |
15031 | name = dwarf2_name (die, cu); |
15032 | if (name) | |
15033 | TYPE_NAME (range_type) = name; | |
6e70227d | 15034 | |
e142c38c | 15035 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
15036 | if (attr) |
15037 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
15038 | ||
7e314c57 JK |
15039 | set_die_type (die, range_type, cu); |
15040 | ||
15041 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
15042 | set_descriptive_type (range_type, die, cu); |
15043 | ||
7e314c57 | 15044 | return range_type; |
a02abb62 | 15045 | } |
6e70227d | 15046 | |
f792889a | 15047 | static struct type * |
81a17f79 JB |
15048 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
15049 | { | |
15050 | struct type *type; | |
81a17f79 | 15051 | |
81a17f79 JB |
15052 | /* For now, we only support the C meaning of an unspecified type: void. */ |
15053 | ||
0114d602 DJ |
15054 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
15055 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 15056 | |
f792889a | 15057 | return set_die_type (die, type, cu); |
81a17f79 | 15058 | } |
a02abb62 | 15059 | |
639d11d3 DC |
15060 | /* Read a single die and all its descendents. Set the die's sibling |
15061 | field to NULL; set other fields in the die correctly, and set all | |
15062 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
15063 | location of the info_ptr after reading all of those dies. PARENT | |
15064 | is the parent of the die in question. */ | |
15065 | ||
15066 | static struct die_info * | |
dee91e82 | 15067 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
15068 | const gdb_byte *info_ptr, |
15069 | const gdb_byte **new_info_ptr, | |
dee91e82 | 15070 | struct die_info *parent) |
639d11d3 DC |
15071 | { |
15072 | struct die_info *die; | |
d521ce57 | 15073 | const gdb_byte *cur_ptr; |
639d11d3 DC |
15074 | int has_children; |
15075 | ||
bf6af496 | 15076 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
15077 | if (die == NULL) |
15078 | { | |
15079 | *new_info_ptr = cur_ptr; | |
15080 | return NULL; | |
15081 | } | |
93311388 | 15082 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
15083 | |
15084 | if (has_children) | |
bf6af496 | 15085 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
15086 | else |
15087 | { | |
15088 | die->child = NULL; | |
15089 | *new_info_ptr = cur_ptr; | |
15090 | } | |
15091 | ||
15092 | die->sibling = NULL; | |
15093 | die->parent = parent; | |
15094 | return die; | |
15095 | } | |
15096 | ||
15097 | /* Read a die, all of its descendents, and all of its siblings; set | |
15098 | all of the fields of all of the dies correctly. Arguments are as | |
15099 | in read_die_and_children. */ | |
15100 | ||
15101 | static struct die_info * | |
bf6af496 | 15102 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
15103 | const gdb_byte *info_ptr, |
15104 | const gdb_byte **new_info_ptr, | |
bf6af496 | 15105 | struct die_info *parent) |
639d11d3 DC |
15106 | { |
15107 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 15108 | const gdb_byte *cur_ptr; |
639d11d3 | 15109 | |
c906108c | 15110 | cur_ptr = info_ptr; |
639d11d3 DC |
15111 | first_die = last_sibling = NULL; |
15112 | ||
15113 | while (1) | |
c906108c | 15114 | { |
639d11d3 | 15115 | struct die_info *die |
dee91e82 | 15116 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 15117 | |
1d325ec1 | 15118 | if (die == NULL) |
c906108c | 15119 | { |
639d11d3 DC |
15120 | *new_info_ptr = cur_ptr; |
15121 | return first_die; | |
c906108c | 15122 | } |
1d325ec1 DJ |
15123 | |
15124 | if (!first_die) | |
15125 | first_die = die; | |
c906108c | 15126 | else |
1d325ec1 DJ |
15127 | last_sibling->sibling = die; |
15128 | ||
15129 | last_sibling = die; | |
c906108c | 15130 | } |
c906108c SS |
15131 | } |
15132 | ||
bf6af496 DE |
15133 | /* Read a die, all of its descendents, and all of its siblings; set |
15134 | all of the fields of all of the dies correctly. Arguments are as | |
15135 | in read_die_and_children. | |
15136 | This the main entry point for reading a DIE and all its children. */ | |
15137 | ||
15138 | static struct die_info * | |
15139 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
15140 | const gdb_byte *info_ptr, |
15141 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
15142 | struct die_info *parent) |
15143 | { | |
15144 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
15145 | new_info_ptr, parent); | |
15146 | ||
b4f54984 | 15147 | if (dwarf_die_debug) |
bf6af496 DE |
15148 | { |
15149 | fprintf_unfiltered (gdb_stdlog, | |
15150 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15151 | get_section_name (reader->die_section), |
bf6af496 DE |
15152 | (unsigned) (info_ptr - reader->die_section->buffer), |
15153 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 15154 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
15155 | } |
15156 | ||
15157 | return die; | |
15158 | } | |
15159 | ||
3019eac3 DE |
15160 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
15161 | attributes. | |
15162 | The caller is responsible for filling in the extra attributes | |
15163 | and updating (*DIEP)->num_attrs. | |
15164 | Set DIEP to point to a newly allocated die with its information, | |
15165 | except for its child, sibling, and parent fields. | |
15166 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 15167 | |
d521ce57 | 15168 | static const gdb_byte * |
3019eac3 | 15169 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 15170 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 15171 | int *has_children, int num_extra_attrs) |
93311388 | 15172 | { |
b64f50a1 JK |
15173 | unsigned int abbrev_number, bytes_read, i; |
15174 | sect_offset offset; | |
93311388 DE |
15175 | struct abbrev_info *abbrev; |
15176 | struct die_info *die; | |
15177 | struct dwarf2_cu *cu = reader->cu; | |
15178 | bfd *abfd = reader->abfd; | |
15179 | ||
b64f50a1 | 15180 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
15181 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15182 | info_ptr += bytes_read; | |
15183 | if (!abbrev_number) | |
15184 | { | |
15185 | *diep = NULL; | |
15186 | *has_children = 0; | |
15187 | return info_ptr; | |
15188 | } | |
15189 | ||
433df2d4 | 15190 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 15191 | if (!abbrev) |
348e048f DE |
15192 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
15193 | abbrev_number, | |
15194 | bfd_get_filename (abfd)); | |
15195 | ||
3019eac3 | 15196 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
15197 | die->offset = offset; |
15198 | die->tag = abbrev->tag; | |
15199 | die->abbrev = abbrev_number; | |
15200 | ||
3019eac3 DE |
15201 | /* Make the result usable. |
15202 | The caller needs to update num_attrs after adding the extra | |
15203 | attributes. */ | |
93311388 DE |
15204 | die->num_attrs = abbrev->num_attrs; |
15205 | ||
15206 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
15207 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
15208 | info_ptr); | |
93311388 DE |
15209 | |
15210 | *diep = die; | |
15211 | *has_children = abbrev->has_children; | |
15212 | return info_ptr; | |
15213 | } | |
15214 | ||
3019eac3 DE |
15215 | /* Read a die and all its attributes. |
15216 | Set DIEP to point to a newly allocated die with its information, | |
15217 | except for its child, sibling, and parent fields. | |
15218 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
15219 | ||
d521ce57 | 15220 | static const gdb_byte * |
3019eac3 | 15221 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 15222 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
15223 | int *has_children) |
15224 | { | |
d521ce57 | 15225 | const gdb_byte *result; |
bf6af496 DE |
15226 | |
15227 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
15228 | ||
b4f54984 | 15229 | if (dwarf_die_debug) |
bf6af496 DE |
15230 | { |
15231 | fprintf_unfiltered (gdb_stdlog, | |
15232 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15233 | get_section_name (reader->die_section), |
bf6af496 DE |
15234 | (unsigned) (info_ptr - reader->die_section->buffer), |
15235 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 15236 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
15237 | } |
15238 | ||
15239 | return result; | |
3019eac3 | 15240 | } |
433df2d4 DE |
15241 | \f |
15242 | /* Abbreviation tables. | |
3019eac3 | 15243 | |
433df2d4 | 15244 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
15245 | stored in a separate .debug_abbrev section. Before we read any |
15246 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
15247 | in a hash table. */ |
15248 | ||
15249 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
15250 | ||
15251 | static struct abbrev_info * | |
15252 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
15253 | { | |
15254 | struct abbrev_info *abbrev; | |
15255 | ||
15256 | abbrev = (struct abbrev_info *) | |
15257 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
15258 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
15259 | return abbrev; | |
15260 | } | |
15261 | ||
15262 | /* Add an abbreviation to the table. */ | |
c906108c SS |
15263 | |
15264 | static void | |
433df2d4 DE |
15265 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
15266 | unsigned int abbrev_number, | |
15267 | struct abbrev_info *abbrev) | |
15268 | { | |
15269 | unsigned int hash_number; | |
15270 | ||
15271 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15272 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
15273 | abbrev_table->abbrevs[hash_number] = abbrev; | |
15274 | } | |
dee91e82 | 15275 | |
433df2d4 DE |
15276 | /* Look up an abbrev in the table. |
15277 | Returns NULL if the abbrev is not found. */ | |
15278 | ||
15279 | static struct abbrev_info * | |
15280 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
15281 | unsigned int abbrev_number) | |
c906108c | 15282 | { |
433df2d4 DE |
15283 | unsigned int hash_number; |
15284 | struct abbrev_info *abbrev; | |
15285 | ||
15286 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15287 | abbrev = abbrev_table->abbrevs[hash_number]; | |
15288 | ||
15289 | while (abbrev) | |
15290 | { | |
15291 | if (abbrev->number == abbrev_number) | |
15292 | return abbrev; | |
15293 | abbrev = abbrev->next; | |
15294 | } | |
15295 | return NULL; | |
15296 | } | |
15297 | ||
15298 | /* Read in an abbrev table. */ | |
15299 | ||
15300 | static struct abbrev_table * | |
15301 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
15302 | sect_offset offset) | |
15303 | { | |
15304 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 15305 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 15306 | struct abbrev_table *abbrev_table; |
d521ce57 | 15307 | const gdb_byte *abbrev_ptr; |
c906108c SS |
15308 | struct abbrev_info *cur_abbrev; |
15309 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 15310 | unsigned int abbrev_form; |
f3dd6933 DJ |
15311 | struct attr_abbrev *cur_attrs; |
15312 | unsigned int allocated_attrs; | |
c906108c | 15313 | |
70ba0933 | 15314 | abbrev_table = XNEW (struct abbrev_table); |
f4dc4d17 | 15315 | abbrev_table->offset = offset; |
433df2d4 DE |
15316 | obstack_init (&abbrev_table->abbrev_obstack); |
15317 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
15318 | (ABBREV_HASH_SIZE | |
15319 | * sizeof (struct abbrev_info *))); | |
15320 | memset (abbrev_table->abbrevs, 0, | |
15321 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 15322 | |
433df2d4 DE |
15323 | dwarf2_read_section (objfile, section); |
15324 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
15325 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15326 | abbrev_ptr += bytes_read; | |
15327 | ||
f3dd6933 DJ |
15328 | allocated_attrs = ATTR_ALLOC_CHUNK; |
15329 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 15330 | |
0963b4bd | 15331 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
15332 | while (abbrev_number) |
15333 | { | |
433df2d4 | 15334 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
15335 | |
15336 | /* read in abbrev header */ | |
15337 | cur_abbrev->number = abbrev_number; | |
15338 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15339 | abbrev_ptr += bytes_read; | |
15340 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
15341 | abbrev_ptr += 1; | |
15342 | ||
15343 | /* now read in declarations */ | |
15344 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15345 | abbrev_ptr += bytes_read; | |
15346 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15347 | abbrev_ptr += bytes_read; | |
15348 | while (abbrev_name) | |
15349 | { | |
f3dd6933 | 15350 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 15351 | { |
f3dd6933 DJ |
15352 | allocated_attrs += ATTR_ALLOC_CHUNK; |
15353 | cur_attrs | |
15354 | = xrealloc (cur_attrs, (allocated_attrs | |
15355 | * sizeof (struct attr_abbrev))); | |
c906108c | 15356 | } |
ae038cb0 | 15357 | |
f3dd6933 DJ |
15358 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
15359 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
15360 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15361 | abbrev_ptr += bytes_read; | |
15362 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15363 | abbrev_ptr += bytes_read; | |
15364 | } | |
15365 | ||
433df2d4 | 15366 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
15367 | (cur_abbrev->num_attrs |
15368 | * sizeof (struct attr_abbrev))); | |
15369 | memcpy (cur_abbrev->attrs, cur_attrs, | |
15370 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
15371 | ||
433df2d4 | 15372 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
15373 | |
15374 | /* Get next abbreviation. | |
15375 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
15376 | always properly terminated with an abbrev number of 0. |
15377 | Exit loop if we encounter an abbreviation which we have | |
15378 | already read (which means we are about to read the abbreviations | |
15379 | for the next compile unit) or if the end of the abbreviation | |
15380 | table is reached. */ | |
433df2d4 | 15381 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
15382 | break; |
15383 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15384 | abbrev_ptr += bytes_read; | |
433df2d4 | 15385 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
15386 | break; |
15387 | } | |
f3dd6933 DJ |
15388 | |
15389 | xfree (cur_attrs); | |
433df2d4 | 15390 | return abbrev_table; |
c906108c SS |
15391 | } |
15392 | ||
433df2d4 | 15393 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 15394 | |
c906108c | 15395 | static void |
433df2d4 | 15396 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 15397 | { |
433df2d4 DE |
15398 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
15399 | xfree (abbrev_table); | |
c906108c SS |
15400 | } |
15401 | ||
f4dc4d17 DE |
15402 | /* Same as abbrev_table_free but as a cleanup. |
15403 | We pass in a pointer to the pointer to the table so that we can | |
15404 | set the pointer to NULL when we're done. It also simplifies | |
73051182 | 15405 | build_type_psymtabs_1. */ |
f4dc4d17 DE |
15406 | |
15407 | static void | |
15408 | abbrev_table_free_cleanup (void *table_ptr) | |
15409 | { | |
15410 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
15411 | ||
15412 | if (*abbrev_table_ptr != NULL) | |
15413 | abbrev_table_free (*abbrev_table_ptr); | |
15414 | *abbrev_table_ptr = NULL; | |
15415 | } | |
15416 | ||
433df2d4 DE |
15417 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
15418 | ||
15419 | static void | |
15420 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
15421 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 15422 | { |
433df2d4 DE |
15423 | cu->abbrev_table = |
15424 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
15425 | } | |
c906108c | 15426 | |
433df2d4 | 15427 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 15428 | |
433df2d4 DE |
15429 | static void |
15430 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
15431 | { | |
15432 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 15433 | |
a2ce51a0 DE |
15434 | if (cu->abbrev_table != NULL) |
15435 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
15436 | /* Set this to NULL so that we SEGV if we try to read it later, |
15437 | and also because free_comp_unit verifies this is NULL. */ | |
15438 | cu->abbrev_table = NULL; | |
15439 | } | |
15440 | \f | |
72bf9492 DJ |
15441 | /* Returns nonzero if TAG represents a type that we might generate a partial |
15442 | symbol for. */ | |
15443 | ||
15444 | static int | |
15445 | is_type_tag_for_partial (int tag) | |
15446 | { | |
15447 | switch (tag) | |
15448 | { | |
15449 | #if 0 | |
15450 | /* Some types that would be reasonable to generate partial symbols for, | |
15451 | that we don't at present. */ | |
15452 | case DW_TAG_array_type: | |
15453 | case DW_TAG_file_type: | |
15454 | case DW_TAG_ptr_to_member_type: | |
15455 | case DW_TAG_set_type: | |
15456 | case DW_TAG_string_type: | |
15457 | case DW_TAG_subroutine_type: | |
15458 | #endif | |
15459 | case DW_TAG_base_type: | |
15460 | case DW_TAG_class_type: | |
680b30c7 | 15461 | case DW_TAG_interface_type: |
72bf9492 DJ |
15462 | case DW_TAG_enumeration_type: |
15463 | case DW_TAG_structure_type: | |
15464 | case DW_TAG_subrange_type: | |
15465 | case DW_TAG_typedef: | |
15466 | case DW_TAG_union_type: | |
15467 | return 1; | |
15468 | default: | |
15469 | return 0; | |
15470 | } | |
15471 | } | |
15472 | ||
15473 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
15474 | ||
15475 | static struct partial_die_info * | |
dee91e82 | 15476 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 15477 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 15478 | { |
dee91e82 | 15479 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15480 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
15481 | struct partial_die_info *part_die; |
15482 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
15483 | struct abbrev_info *abbrev; | |
15484 | unsigned int bytes_read; | |
5afb4e99 | 15485 | unsigned int load_all = 0; |
72bf9492 DJ |
15486 | int nesting_level = 1; |
15487 | ||
15488 | parent_die = NULL; | |
15489 | last_die = NULL; | |
15490 | ||
7adf1e79 DE |
15491 | gdb_assert (cu->per_cu != NULL); |
15492 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
15493 | load_all = 1; |
15494 | ||
72bf9492 DJ |
15495 | cu->partial_dies |
15496 | = htab_create_alloc_ex (cu->header.length / 12, | |
15497 | partial_die_hash, | |
15498 | partial_die_eq, | |
15499 | NULL, | |
15500 | &cu->comp_unit_obstack, | |
15501 | hashtab_obstack_allocate, | |
15502 | dummy_obstack_deallocate); | |
15503 | ||
15504 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
15505 | sizeof (struct partial_die_info)); | |
15506 | ||
15507 | while (1) | |
15508 | { | |
15509 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
15510 | ||
15511 | /* A NULL abbrev means the end of a series of children. */ | |
15512 | if (abbrev == NULL) | |
15513 | { | |
15514 | if (--nesting_level == 0) | |
15515 | { | |
15516 | /* PART_DIE was probably the last thing allocated on the | |
15517 | comp_unit_obstack, so we could call obstack_free | |
15518 | here. We don't do that because the waste is small, | |
15519 | and will be cleaned up when we're done with this | |
15520 | compilation unit. This way, we're also more robust | |
15521 | against other users of the comp_unit_obstack. */ | |
15522 | return first_die; | |
15523 | } | |
15524 | info_ptr += bytes_read; | |
15525 | last_die = parent_die; | |
15526 | parent_die = parent_die->die_parent; | |
15527 | continue; | |
15528 | } | |
15529 | ||
98bfdba5 PA |
15530 | /* Check for template arguments. We never save these; if |
15531 | they're seen, we just mark the parent, and go on our way. */ | |
15532 | if (parent_die != NULL | |
15533 | && cu->language == language_cplus | |
15534 | && (abbrev->tag == DW_TAG_template_type_param | |
15535 | || abbrev->tag == DW_TAG_template_value_param)) | |
15536 | { | |
15537 | parent_die->has_template_arguments = 1; | |
15538 | ||
15539 | if (!load_all) | |
15540 | { | |
15541 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 15542 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15543 | continue; |
15544 | } | |
15545 | } | |
15546 | ||
0d99eb77 | 15547 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
15548 | Skip their other children. */ |
15549 | if (!load_all | |
15550 | && cu->language == language_cplus | |
15551 | && parent_die != NULL | |
15552 | && parent_die->tag == DW_TAG_subprogram) | |
15553 | { | |
dee91e82 | 15554 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15555 | continue; |
15556 | } | |
15557 | ||
5afb4e99 DJ |
15558 | /* Check whether this DIE is interesting enough to save. Normally |
15559 | we would not be interested in members here, but there may be | |
15560 | later variables referencing them via DW_AT_specification (for | |
15561 | static members). */ | |
15562 | if (!load_all | |
15563 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 15564 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
15565 | && abbrev->tag != DW_TAG_enumerator |
15566 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 15567 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 15568 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 15569 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 15570 | && abbrev->tag != DW_TAG_module |
95554aad | 15571 | && abbrev->tag != DW_TAG_member |
74921315 KS |
15572 | && abbrev->tag != DW_TAG_imported_unit |
15573 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
15574 | { |
15575 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15576 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
15577 | continue; |
15578 | } | |
15579 | ||
dee91e82 DE |
15580 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
15581 | info_ptr); | |
72bf9492 DJ |
15582 | |
15583 | /* This two-pass algorithm for processing partial symbols has a | |
15584 | high cost in cache pressure. Thus, handle some simple cases | |
15585 | here which cover the majority of C partial symbols. DIEs | |
15586 | which neither have specification tags in them, nor could have | |
15587 | specification tags elsewhere pointing at them, can simply be | |
15588 | processed and discarded. | |
15589 | ||
15590 | This segment is also optional; scan_partial_symbols and | |
15591 | add_partial_symbol will handle these DIEs if we chain | |
15592 | them in normally. When compilers which do not emit large | |
15593 | quantities of duplicate debug information are more common, | |
15594 | this code can probably be removed. */ | |
15595 | ||
15596 | /* Any complete simple types at the top level (pretty much all | |
15597 | of them, for a language without namespaces), can be processed | |
15598 | directly. */ | |
15599 | if (parent_die == NULL | |
15600 | && part_die->has_specification == 0 | |
15601 | && part_die->is_declaration == 0 | |
d8228535 | 15602 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
15603 | || part_die->tag == DW_TAG_base_type |
15604 | || part_die->tag == DW_TAG_subrange_type)) | |
15605 | { | |
15606 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 15607 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15608 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
15609 | &objfile->static_psymbols, |
15610 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 15611 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15612 | continue; |
15613 | } | |
15614 | ||
d8228535 JK |
15615 | /* The exception for DW_TAG_typedef with has_children above is |
15616 | a workaround of GCC PR debug/47510. In the case of this complaint | |
15617 | type_name_no_tag_or_error will error on such types later. | |
15618 | ||
15619 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
15620 | it could not find the child DIEs referenced later, this is checked | |
15621 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
15622 | ||
15623 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
15624 | complaint (&symfile_complaints, | |
15625 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
15626 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 15627 | part_die->offset.sect_off, objfile_name (objfile)); |
d8228535 | 15628 | |
72bf9492 DJ |
15629 | /* If we're at the second level, and we're an enumerator, and |
15630 | our parent has no specification (meaning possibly lives in a | |
15631 | namespace elsewhere), then we can add the partial symbol now | |
15632 | instead of queueing it. */ | |
15633 | if (part_die->tag == DW_TAG_enumerator | |
15634 | && parent_die != NULL | |
15635 | && parent_die->die_parent == NULL | |
15636 | && parent_die->tag == DW_TAG_enumeration_type | |
15637 | && parent_die->has_specification == 0) | |
15638 | { | |
15639 | if (part_die->name == NULL) | |
3e43a32a MS |
15640 | complaint (&symfile_complaints, |
15641 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 15642 | else if (building_psymtab) |
04a679b8 | 15643 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15644 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
15645 | (cu->language == language_cplus |
15646 | || cu->language == language_java) | |
bb5ed363 DE |
15647 | ? &objfile->global_psymbols |
15648 | : &objfile->static_psymbols, | |
15649 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 15650 | |
dee91e82 | 15651 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15652 | continue; |
15653 | } | |
15654 | ||
15655 | /* We'll save this DIE so link it in. */ | |
15656 | part_die->die_parent = parent_die; | |
15657 | part_die->die_sibling = NULL; | |
15658 | part_die->die_child = NULL; | |
15659 | ||
15660 | if (last_die && last_die == parent_die) | |
15661 | last_die->die_child = part_die; | |
15662 | else if (last_die) | |
15663 | last_die->die_sibling = part_die; | |
15664 | ||
15665 | last_die = part_die; | |
15666 | ||
15667 | if (first_die == NULL) | |
15668 | first_die = part_die; | |
15669 | ||
15670 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
15671 | find interesting need to be in the hash table, because we | |
15672 | also have the parent/sibling/child chains; only those that we | |
15673 | might refer to by offset later during partial symbol reading. | |
15674 | ||
15675 | For now this means things that might have be the target of a | |
15676 | DW_AT_specification, DW_AT_abstract_origin, or | |
15677 | DW_AT_extension. DW_AT_extension will refer only to | |
15678 | namespaces; DW_AT_abstract_origin refers to functions (and | |
15679 | many things under the function DIE, but we do not recurse | |
15680 | into function DIEs during partial symbol reading) and | |
15681 | possibly variables as well; DW_AT_specification refers to | |
15682 | declarations. Declarations ought to have the DW_AT_declaration | |
15683 | flag. It happens that GCC forgets to put it in sometimes, but | |
15684 | only for functions, not for types. | |
15685 | ||
15686 | Adding more things than necessary to the hash table is harmless | |
15687 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
15688 | wasted time in find_partial_die, when we reread the compilation |
15689 | unit with load_all_dies set. */ | |
72bf9492 | 15690 | |
5afb4e99 | 15691 | if (load_all |
72929c62 | 15692 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 15693 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
15694 | || abbrev->tag == DW_TAG_variable |
15695 | || abbrev->tag == DW_TAG_namespace | |
15696 | || part_die->is_declaration) | |
15697 | { | |
15698 | void **slot; | |
15699 | ||
15700 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 15701 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
15702 | *slot = part_die; |
15703 | } | |
15704 | ||
15705 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
15706 | sizeof (struct partial_die_info)); | |
15707 | ||
15708 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 15709 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
15710 | languages we have to, so that we can get at method physnames |
15711 | to infer fully qualified class names, for DW_AT_specification, | |
15712 | and for C++ template arguments. For C++, we also look one level | |
15713 | inside functions to find template arguments (if the name of the | |
15714 | function does not already contain the template arguments). | |
bc30ff58 JB |
15715 | |
15716 | For Ada, we need to scan the children of subprograms and lexical | |
15717 | blocks as well because Ada allows the definition of nested | |
15718 | entities that could be interesting for the debugger, such as | |
15719 | nested subprograms for instance. */ | |
72bf9492 | 15720 | if (last_die->has_children |
5afb4e99 DJ |
15721 | && (load_all |
15722 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 15723 | || last_die->tag == DW_TAG_module |
72bf9492 | 15724 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
15725 | || (cu->language == language_cplus |
15726 | && last_die->tag == DW_TAG_subprogram | |
15727 | && (last_die->name == NULL | |
15728 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
15729 | || (cu->language != language_c |
15730 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 15731 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 15732 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
15733 | || last_die->tag == DW_TAG_union_type)) |
15734 | || (cu->language == language_ada | |
15735 | && (last_die->tag == DW_TAG_subprogram | |
15736 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
15737 | { |
15738 | nesting_level++; | |
15739 | parent_die = last_die; | |
15740 | continue; | |
15741 | } | |
15742 | ||
15743 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15744 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
15745 | |
15746 | /* Back to the top, do it again. */ | |
15747 | } | |
15748 | } | |
15749 | ||
c906108c SS |
15750 | /* Read a minimal amount of information into the minimal die structure. */ |
15751 | ||
d521ce57 | 15752 | static const gdb_byte * |
dee91e82 DE |
15753 | read_partial_die (const struct die_reader_specs *reader, |
15754 | struct partial_die_info *part_die, | |
15755 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 15756 | const gdb_byte *info_ptr) |
c906108c | 15757 | { |
dee91e82 | 15758 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15759 | struct objfile *objfile = cu->objfile; |
d521ce57 | 15760 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 15761 | unsigned int i; |
c906108c | 15762 | struct attribute attr; |
c5aa993b | 15763 | int has_low_pc_attr = 0; |
c906108c | 15764 | int has_high_pc_attr = 0; |
91da1414 | 15765 | int high_pc_relative = 0; |
c906108c | 15766 | |
72bf9492 | 15767 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 15768 | |
b64f50a1 | 15769 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
15770 | |
15771 | info_ptr += abbrev_len; | |
15772 | ||
15773 | if (abbrev == NULL) | |
15774 | return info_ptr; | |
15775 | ||
c906108c SS |
15776 | part_die->tag = abbrev->tag; |
15777 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
15778 | |
15779 | for (i = 0; i < abbrev->num_attrs; ++i) | |
15780 | { | |
dee91e82 | 15781 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
15782 | |
15783 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 15784 | partial symbol table. */ |
c906108c SS |
15785 | switch (attr.name) |
15786 | { | |
15787 | case DW_AT_name: | |
71c25dea TT |
15788 | switch (part_die->tag) |
15789 | { | |
15790 | case DW_TAG_compile_unit: | |
95554aad | 15791 | case DW_TAG_partial_unit: |
348e048f | 15792 | case DW_TAG_type_unit: |
71c25dea TT |
15793 | /* Compilation units have a DW_AT_name that is a filename, not |
15794 | a source language identifier. */ | |
15795 | case DW_TAG_enumeration_type: | |
15796 | case DW_TAG_enumerator: | |
15797 | /* These tags always have simple identifiers already; no need | |
15798 | to canonicalize them. */ | |
15799 | part_die->name = DW_STRING (&attr); | |
15800 | break; | |
15801 | default: | |
15802 | part_die->name | |
15803 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
34a68019 | 15804 | &objfile->per_bfd->storage_obstack); |
71c25dea TT |
15805 | break; |
15806 | } | |
c906108c | 15807 | break; |
31ef98ae | 15808 | case DW_AT_linkage_name: |
c906108c | 15809 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
15810 | /* Note that both forms of linkage name might appear. We |
15811 | assume they will be the same, and we only store the last | |
15812 | one we see. */ | |
94af9270 KS |
15813 | if (cu->language == language_ada) |
15814 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 15815 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
15816 | break; |
15817 | case DW_AT_low_pc: | |
15818 | has_low_pc_attr = 1; | |
31aa7e4e | 15819 | part_die->lowpc = attr_value_as_address (&attr); |
c906108c SS |
15820 | break; |
15821 | case DW_AT_high_pc: | |
15822 | has_high_pc_attr = 1; | |
31aa7e4e JB |
15823 | part_die->highpc = attr_value_as_address (&attr); |
15824 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) | |
15825 | high_pc_relative = 1; | |
c906108c SS |
15826 | break; |
15827 | case DW_AT_location: | |
0963b4bd | 15828 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
15829 | if (attr_form_is_block (&attr)) |
15830 | { | |
95554aad | 15831 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 15832 | } |
3690dd37 | 15833 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 15834 | { |
4d3c2250 | 15835 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15836 | } |
15837 | else | |
15838 | { | |
4d3c2250 KB |
15839 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
15840 | "partial symbol information"); | |
8e19ed76 | 15841 | } |
c906108c | 15842 | break; |
c906108c SS |
15843 | case DW_AT_external: |
15844 | part_die->is_external = DW_UNSND (&attr); | |
15845 | break; | |
15846 | case DW_AT_declaration: | |
15847 | part_die->is_declaration = DW_UNSND (&attr); | |
15848 | break; | |
15849 | case DW_AT_type: | |
15850 | part_die->has_type = 1; | |
15851 | break; | |
15852 | case DW_AT_abstract_origin: | |
15853 | case DW_AT_specification: | |
72bf9492 DJ |
15854 | case DW_AT_extension: |
15855 | part_die->has_specification = 1; | |
c764a876 | 15856 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
15857 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
15858 | || cu->per_cu->is_dwz); | |
c906108c SS |
15859 | break; |
15860 | case DW_AT_sibling: | |
15861 | /* Ignore absolute siblings, they might point outside of | |
15862 | the current compile unit. */ | |
15863 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
15864 | complaint (&symfile_complaints, |
15865 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 15866 | else |
b9502d3f WN |
15867 | { |
15868 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
15869 | const gdb_byte *sibling_ptr = buffer + off; | |
15870 | ||
15871 | if (sibling_ptr < info_ptr) | |
15872 | complaint (&symfile_complaints, | |
15873 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
15874 | else if (sibling_ptr > reader->buffer_end) |
15875 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
15876 | else |
15877 | part_die->sibling = sibling_ptr; | |
15878 | } | |
c906108c | 15879 | break; |
fa4028e9 JB |
15880 | case DW_AT_byte_size: |
15881 | part_die->has_byte_size = 1; | |
15882 | break; | |
ff908ebf AW |
15883 | case DW_AT_const_value: |
15884 | part_die->has_const_value = 1; | |
15885 | break; | |
68511cec CES |
15886 | case DW_AT_calling_convention: |
15887 | /* DWARF doesn't provide a way to identify a program's source-level | |
15888 | entry point. DW_AT_calling_convention attributes are only meant | |
15889 | to describe functions' calling conventions. | |
15890 | ||
15891 | However, because it's a necessary piece of information in | |
15892 | Fortran, and because DW_CC_program is the only piece of debugging | |
15893 | information whose definition refers to a 'main program' at all, | |
15894 | several compilers have begun marking Fortran main programs with | |
15895 | DW_CC_program --- even when those functions use the standard | |
15896 | calling conventions. | |
15897 | ||
15898 | So until DWARF specifies a way to provide this information and | |
15899 | compilers pick up the new representation, we'll support this | |
15900 | practice. */ | |
15901 | if (DW_UNSND (&attr) == DW_CC_program | |
15902 | && cu->language == language_fortran) | |
3d548a53 | 15903 | set_objfile_main_name (objfile, part_die->name, language_fortran); |
68511cec | 15904 | break; |
481860b3 GB |
15905 | case DW_AT_inline: |
15906 | if (DW_UNSND (&attr) == DW_INL_inlined | |
15907 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
15908 | part_die->may_be_inlined = 1; | |
15909 | break; | |
95554aad TT |
15910 | |
15911 | case DW_AT_import: | |
15912 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
15913 | { |
15914 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
15915 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
15916 | || cu->per_cu->is_dwz); | |
15917 | } | |
95554aad TT |
15918 | break; |
15919 | ||
c906108c SS |
15920 | default: |
15921 | break; | |
15922 | } | |
15923 | } | |
15924 | ||
91da1414 MW |
15925 | if (high_pc_relative) |
15926 | part_die->highpc += part_die->lowpc; | |
15927 | ||
9373cf26 JK |
15928 | if (has_low_pc_attr && has_high_pc_attr) |
15929 | { | |
15930 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
15931 | eliminate duplicate copies of functions and vtables and such. | |
15932 | The linker will arbitrarily choose one and discard the others. | |
15933 | The AT_*_pc values for such functions refer to local labels in | |
15934 | these sections. If the section from that file was discarded, the | |
15935 | labels are not in the output, so the relocs get a value of 0. | |
15936 | If this is a discarded function, mark the pc bounds as invalid, | |
15937 | so that GDB will ignore it. */ | |
15938 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
15939 | { | |
bb5ed363 | 15940 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15941 | |
15942 | complaint (&symfile_complaints, | |
15943 | _("DW_AT_low_pc %s is zero " | |
15944 | "for DIE at 0x%x [in module %s]"), | |
15945 | paddress (gdbarch, part_die->lowpc), | |
4262abfb | 15946 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15947 | } |
15948 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
15949 | else if (part_die->lowpc >= part_die->highpc) | |
15950 | { | |
bb5ed363 | 15951 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15952 | |
15953 | complaint (&symfile_complaints, | |
15954 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
15955 | "for DIE at 0x%x [in module %s]"), | |
15956 | paddress (gdbarch, part_die->lowpc), | |
15957 | paddress (gdbarch, part_die->highpc), | |
4262abfb | 15958 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15959 | } |
15960 | else | |
15961 | part_die->has_pc_info = 1; | |
15962 | } | |
85cbf3d3 | 15963 | |
c906108c SS |
15964 | return info_ptr; |
15965 | } | |
15966 | ||
72bf9492 DJ |
15967 | /* Find a cached partial DIE at OFFSET in CU. */ |
15968 | ||
15969 | static struct partial_die_info * | |
b64f50a1 | 15970 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
15971 | { |
15972 | struct partial_die_info *lookup_die = NULL; | |
15973 | struct partial_die_info part_die; | |
15974 | ||
15975 | part_die.offset = offset; | |
b64f50a1 JK |
15976 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
15977 | offset.sect_off); | |
72bf9492 | 15978 | |
72bf9492 DJ |
15979 | return lookup_die; |
15980 | } | |
15981 | ||
348e048f DE |
15982 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
15983 | except in the case of .debug_types DIEs which do not reference | |
15984 | outside their CU (they do however referencing other types via | |
55f1336d | 15985 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
15986 | |
15987 | static struct partial_die_info * | |
36586728 | 15988 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 15989 | { |
bb5ed363 | 15990 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
15991 | struct dwarf2_per_cu_data *per_cu = NULL; |
15992 | struct partial_die_info *pd = NULL; | |
72bf9492 | 15993 | |
36586728 TT |
15994 | if (offset_in_dwz == cu->per_cu->is_dwz |
15995 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
15996 | { |
15997 | pd = find_partial_die_in_comp_unit (offset, cu); | |
15998 | if (pd != NULL) | |
15999 | return pd; | |
0d99eb77 DE |
16000 | /* We missed recording what we needed. |
16001 | Load all dies and try again. */ | |
16002 | per_cu = cu->per_cu; | |
5afb4e99 | 16003 | } |
0d99eb77 DE |
16004 | else |
16005 | { | |
16006 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 16007 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
16008 | { |
16009 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
16010 | " external reference to offset 0x%lx [in module %s].\n"), | |
16011 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
16012 | bfd_get_filename (objfile->obfd)); | |
16013 | } | |
36586728 TT |
16014 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
16015 | objfile); | |
72bf9492 | 16016 | |
0d99eb77 DE |
16017 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
16018 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 16019 | |
0d99eb77 DE |
16020 | per_cu->cu->last_used = 0; |
16021 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
16022 | } | |
5afb4e99 | 16023 | |
dee91e82 DE |
16024 | /* If we didn't find it, and not all dies have been loaded, |
16025 | load them all and try again. */ | |
16026 | ||
5afb4e99 DJ |
16027 | if (pd == NULL && per_cu->load_all_dies == 0) |
16028 | { | |
5afb4e99 | 16029 | per_cu->load_all_dies = 1; |
fd820528 DE |
16030 | |
16031 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
16032 | THIS_CU->cu may already be in use. So we can't just free it and | |
16033 | replace its DIEs with the ones we read in. Instead, we leave those | |
16034 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
16035 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
16036 | set. */ | |
dee91e82 | 16037 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
16038 | |
16039 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
16040 | } | |
16041 | ||
16042 | if (pd == NULL) | |
16043 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
16044 | _("could not find partial DIE 0x%x " |
16045 | "in cache [from module %s]\n"), | |
b64f50a1 | 16046 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 16047 | return pd; |
72bf9492 DJ |
16048 | } |
16049 | ||
abc72ce4 DE |
16050 | /* See if we can figure out if the class lives in a namespace. We do |
16051 | this by looking for a member function; its demangled name will | |
16052 | contain namespace info, if there is any. */ | |
16053 | ||
16054 | static void | |
16055 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
16056 | struct dwarf2_cu *cu) | |
16057 | { | |
16058 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
16059 | what template types look like, because the demangler | |
16060 | frequently doesn't give the same name as the debug info. We | |
16061 | could fix this by only using the demangled name to get the | |
16062 | prefix (but see comment in read_structure_type). */ | |
16063 | ||
16064 | struct partial_die_info *real_pdi; | |
16065 | struct partial_die_info *child_pdi; | |
16066 | ||
16067 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
16068 | we should not do this. We'll prepend the parent's fully qualified | |
16069 | name when we create the partial symbol. */ | |
16070 | ||
16071 | real_pdi = struct_pdi; | |
16072 | while (real_pdi->has_specification) | |
36586728 TT |
16073 | real_pdi = find_partial_die (real_pdi->spec_offset, |
16074 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
16075 | |
16076 | if (real_pdi->die_parent != NULL) | |
16077 | return; | |
16078 | ||
16079 | for (child_pdi = struct_pdi->die_child; | |
16080 | child_pdi != NULL; | |
16081 | child_pdi = child_pdi->die_sibling) | |
16082 | { | |
16083 | if (child_pdi->tag == DW_TAG_subprogram | |
16084 | && child_pdi->linkage_name != NULL) | |
16085 | { | |
16086 | char *actual_class_name | |
16087 | = language_class_name_from_physname (cu->language_defn, | |
16088 | child_pdi->linkage_name); | |
16089 | if (actual_class_name != NULL) | |
16090 | { | |
16091 | struct_pdi->name | |
34a68019 | 16092 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb TT |
16093 | actual_class_name, |
16094 | strlen (actual_class_name)); | |
abc72ce4 DE |
16095 | xfree (actual_class_name); |
16096 | } | |
16097 | break; | |
16098 | } | |
16099 | } | |
16100 | } | |
16101 | ||
72bf9492 DJ |
16102 | /* Adjust PART_DIE before generating a symbol for it. This function |
16103 | may set the is_external flag or change the DIE's name. */ | |
16104 | ||
16105 | static void | |
16106 | fixup_partial_die (struct partial_die_info *part_die, | |
16107 | struct dwarf2_cu *cu) | |
16108 | { | |
abc72ce4 DE |
16109 | /* Once we've fixed up a die, there's no point in doing so again. |
16110 | This also avoids a memory leak if we were to call | |
16111 | guess_partial_die_structure_name multiple times. */ | |
16112 | if (part_die->fixup_called) | |
16113 | return; | |
16114 | ||
72bf9492 DJ |
16115 | /* If we found a reference attribute and the DIE has no name, try |
16116 | to find a name in the referred to DIE. */ | |
16117 | ||
16118 | if (part_die->name == NULL && part_die->has_specification) | |
16119 | { | |
16120 | struct partial_die_info *spec_die; | |
72bf9492 | 16121 | |
36586728 TT |
16122 | spec_die = find_partial_die (part_die->spec_offset, |
16123 | part_die->spec_is_dwz, cu); | |
72bf9492 | 16124 | |
10b3939b | 16125 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
16126 | |
16127 | if (spec_die->name) | |
16128 | { | |
16129 | part_die->name = spec_die->name; | |
16130 | ||
16131 | /* Copy DW_AT_external attribute if it is set. */ | |
16132 | if (spec_die->is_external) | |
16133 | part_die->is_external = spec_die->is_external; | |
16134 | } | |
16135 | } | |
16136 | ||
16137 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
16138 | |
16139 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 16140 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 16141 | |
abc72ce4 DE |
16142 | /* If there is no parent die to provide a namespace, and there are |
16143 | children, see if we can determine the namespace from their linkage | |
122d1940 | 16144 | name. */ |
abc72ce4 | 16145 | if (cu->language == language_cplus |
8b70b953 | 16146 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
16147 | && part_die->die_parent == NULL |
16148 | && part_die->has_children | |
16149 | && (part_die->tag == DW_TAG_class_type | |
16150 | || part_die->tag == DW_TAG_structure_type | |
16151 | || part_die->tag == DW_TAG_union_type)) | |
16152 | guess_partial_die_structure_name (part_die, cu); | |
16153 | ||
53832f31 TT |
16154 | /* GCC might emit a nameless struct or union that has a linkage |
16155 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
16156 | if (part_die->name == NULL | |
96408a79 SA |
16157 | && (part_die->tag == DW_TAG_class_type |
16158 | || part_die->tag == DW_TAG_interface_type | |
16159 | || part_die->tag == DW_TAG_structure_type | |
16160 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
16161 | && part_die->linkage_name != NULL) |
16162 | { | |
16163 | char *demangled; | |
16164 | ||
8de20a37 | 16165 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
16166 | if (demangled) |
16167 | { | |
96408a79 SA |
16168 | const char *base; |
16169 | ||
16170 | /* Strip any leading namespaces/classes, keep only the base name. | |
16171 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
16172 | base = strrchr (demangled, ':'); | |
16173 | if (base && base > demangled && base[-1] == ':') | |
16174 | base++; | |
16175 | else | |
16176 | base = demangled; | |
16177 | ||
34a68019 TT |
16178 | part_die->name |
16179 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
16180 | base, strlen (base)); | |
53832f31 TT |
16181 | xfree (demangled); |
16182 | } | |
16183 | } | |
16184 | ||
abc72ce4 | 16185 | part_die->fixup_called = 1; |
72bf9492 DJ |
16186 | } |
16187 | ||
a8329558 | 16188 | /* Read an attribute value described by an attribute form. */ |
c906108c | 16189 | |
d521ce57 | 16190 | static const gdb_byte * |
dee91e82 DE |
16191 | read_attribute_value (const struct die_reader_specs *reader, |
16192 | struct attribute *attr, unsigned form, | |
d521ce57 | 16193 | const gdb_byte *info_ptr) |
c906108c | 16194 | { |
dee91e82 | 16195 | struct dwarf2_cu *cu = reader->cu; |
3e29f34a MR |
16196 | struct objfile *objfile = cu->objfile; |
16197 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
dee91e82 | 16198 | bfd *abfd = reader->abfd; |
e7c27a73 | 16199 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16200 | unsigned int bytes_read; |
16201 | struct dwarf_block *blk; | |
16202 | ||
a8329558 KW |
16203 | attr->form = form; |
16204 | switch (form) | |
c906108c | 16205 | { |
c906108c | 16206 | case DW_FORM_ref_addr: |
ae411497 | 16207 | if (cu->header.version == 2) |
4568ecf9 | 16208 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 16209 | else |
4568ecf9 DE |
16210 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
16211 | &cu->header, &bytes_read); | |
ae411497 TT |
16212 | info_ptr += bytes_read; |
16213 | break; | |
36586728 TT |
16214 | case DW_FORM_GNU_ref_alt: |
16215 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16216 | info_ptr += bytes_read; | |
16217 | break; | |
ae411497 | 16218 | case DW_FORM_addr: |
e7c27a73 | 16219 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 16220 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 16221 | info_ptr += bytes_read; |
c906108c SS |
16222 | break; |
16223 | case DW_FORM_block2: | |
7b5a2f43 | 16224 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16225 | blk->size = read_2_bytes (abfd, info_ptr); |
16226 | info_ptr += 2; | |
16227 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16228 | info_ptr += blk->size; | |
16229 | DW_BLOCK (attr) = blk; | |
16230 | break; | |
16231 | case DW_FORM_block4: | |
7b5a2f43 | 16232 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16233 | blk->size = read_4_bytes (abfd, info_ptr); |
16234 | info_ptr += 4; | |
16235 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16236 | info_ptr += blk->size; | |
16237 | DW_BLOCK (attr) = blk; | |
16238 | break; | |
16239 | case DW_FORM_data2: | |
16240 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
16241 | info_ptr += 2; | |
16242 | break; | |
16243 | case DW_FORM_data4: | |
16244 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
16245 | info_ptr += 4; | |
16246 | break; | |
16247 | case DW_FORM_data8: | |
16248 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
16249 | info_ptr += 8; | |
16250 | break; | |
2dc7f7b3 TT |
16251 | case DW_FORM_sec_offset: |
16252 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16253 | info_ptr += bytes_read; | |
16254 | break; | |
c906108c | 16255 | case DW_FORM_string: |
9b1c24c8 | 16256 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 16257 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
16258 | info_ptr += bytes_read; |
16259 | break; | |
4bdf3d34 | 16260 | case DW_FORM_strp: |
36586728 TT |
16261 | if (!cu->per_cu->is_dwz) |
16262 | { | |
16263 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
16264 | &bytes_read); | |
16265 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16266 | info_ptr += bytes_read; | |
16267 | break; | |
16268 | } | |
16269 | /* FALLTHROUGH */ | |
16270 | case DW_FORM_GNU_strp_alt: | |
16271 | { | |
16272 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
16273 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
16274 | &bytes_read); | |
16275 | ||
16276 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
16277 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16278 | info_ptr += bytes_read; | |
16279 | } | |
4bdf3d34 | 16280 | break; |
2dc7f7b3 | 16281 | case DW_FORM_exprloc: |
c906108c | 16282 | case DW_FORM_block: |
7b5a2f43 | 16283 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16284 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16285 | info_ptr += bytes_read; | |
16286 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16287 | info_ptr += blk->size; | |
16288 | DW_BLOCK (attr) = blk; | |
16289 | break; | |
16290 | case DW_FORM_block1: | |
7b5a2f43 | 16291 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16292 | blk->size = read_1_byte (abfd, info_ptr); |
16293 | info_ptr += 1; | |
16294 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16295 | info_ptr += blk->size; | |
16296 | DW_BLOCK (attr) = blk; | |
16297 | break; | |
16298 | case DW_FORM_data1: | |
16299 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16300 | info_ptr += 1; | |
16301 | break; | |
16302 | case DW_FORM_flag: | |
16303 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16304 | info_ptr += 1; | |
16305 | break; | |
2dc7f7b3 TT |
16306 | case DW_FORM_flag_present: |
16307 | DW_UNSND (attr) = 1; | |
16308 | break; | |
c906108c SS |
16309 | case DW_FORM_sdata: |
16310 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
16311 | info_ptr += bytes_read; | |
16312 | break; | |
16313 | case DW_FORM_udata: | |
16314 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16315 | info_ptr += bytes_read; | |
16316 | break; | |
16317 | case DW_FORM_ref1: | |
4568ecf9 DE |
16318 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16319 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
16320 | info_ptr += 1; |
16321 | break; | |
16322 | case DW_FORM_ref2: | |
4568ecf9 DE |
16323 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16324 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
16325 | info_ptr += 2; |
16326 | break; | |
16327 | case DW_FORM_ref4: | |
4568ecf9 DE |
16328 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16329 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
16330 | info_ptr += 4; |
16331 | break; | |
613e1657 | 16332 | case DW_FORM_ref8: |
4568ecf9 DE |
16333 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16334 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
16335 | info_ptr += 8; |
16336 | break; | |
55f1336d | 16337 | case DW_FORM_ref_sig8: |
ac9ec31b | 16338 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
16339 | info_ptr += 8; |
16340 | break; | |
c906108c | 16341 | case DW_FORM_ref_udata: |
4568ecf9 DE |
16342 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16343 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
16344 | info_ptr += bytes_read; |
16345 | break; | |
c906108c | 16346 | case DW_FORM_indirect: |
a8329558 KW |
16347 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16348 | info_ptr += bytes_read; | |
dee91e82 | 16349 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 16350 | break; |
3019eac3 DE |
16351 | case DW_FORM_GNU_addr_index: |
16352 | if (reader->dwo_file == NULL) | |
16353 | { | |
16354 | /* For now flag a hard error. | |
16355 | Later we can turn this into a complaint. */ | |
16356 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16357 | dwarf_form_name (form), | |
16358 | bfd_get_filename (abfd)); | |
16359 | } | |
16360 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
16361 | info_ptr += bytes_read; | |
16362 | break; | |
16363 | case DW_FORM_GNU_str_index: | |
16364 | if (reader->dwo_file == NULL) | |
16365 | { | |
16366 | /* For now flag a hard error. | |
16367 | Later we can turn this into a complaint if warranted. */ | |
16368 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16369 | dwarf_form_name (form), | |
16370 | bfd_get_filename (abfd)); | |
16371 | } | |
16372 | { | |
16373 | ULONGEST str_index = | |
16374 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16375 | ||
342587c4 | 16376 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
16377 | DW_STRING_IS_CANONICAL (attr) = 0; |
16378 | info_ptr += bytes_read; | |
16379 | } | |
16380 | break; | |
c906108c | 16381 | default: |
8a3fe4f8 | 16382 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
16383 | dwarf_form_name (form), |
16384 | bfd_get_filename (abfd)); | |
c906108c | 16385 | } |
28e94949 | 16386 | |
36586728 | 16387 | /* Super hack. */ |
7771576e | 16388 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
16389 | attr->form = DW_FORM_GNU_ref_alt; |
16390 | ||
28e94949 JB |
16391 | /* We have seen instances where the compiler tried to emit a byte |
16392 | size attribute of -1 which ended up being encoded as an unsigned | |
16393 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
16394 | an object of this size seems pretty unlikely so we can relatively | |
16395 | safely treat these cases as if the size attribute was invalid and | |
16396 | treat them as zero by default. */ | |
16397 | if (attr->name == DW_AT_byte_size | |
16398 | && form == DW_FORM_data4 | |
16399 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
16400 | { |
16401 | complaint | |
16402 | (&symfile_complaints, | |
43bbcdc2 PH |
16403 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
16404 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
16405 | DW_UNSND (attr) = 0; |
16406 | } | |
28e94949 | 16407 | |
c906108c SS |
16408 | return info_ptr; |
16409 | } | |
16410 | ||
a8329558 KW |
16411 | /* Read an attribute described by an abbreviated attribute. */ |
16412 | ||
d521ce57 | 16413 | static const gdb_byte * |
dee91e82 DE |
16414 | read_attribute (const struct die_reader_specs *reader, |
16415 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 16416 | const gdb_byte *info_ptr) |
a8329558 KW |
16417 | { |
16418 | attr->name = abbrev->name; | |
dee91e82 | 16419 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
16420 | } |
16421 | ||
0963b4bd | 16422 | /* Read dwarf information from a buffer. */ |
c906108c SS |
16423 | |
16424 | static unsigned int | |
a1855c1d | 16425 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16426 | { |
fe1b8b76 | 16427 | return bfd_get_8 (abfd, buf); |
c906108c SS |
16428 | } |
16429 | ||
16430 | static int | |
a1855c1d | 16431 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16432 | { |
fe1b8b76 | 16433 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
16434 | } |
16435 | ||
16436 | static unsigned int | |
a1855c1d | 16437 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16438 | { |
fe1b8b76 | 16439 | return bfd_get_16 (abfd, buf); |
c906108c SS |
16440 | } |
16441 | ||
21ae7a4d | 16442 | static int |
a1855c1d | 16443 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16444 | { |
16445 | return bfd_get_signed_16 (abfd, buf); | |
16446 | } | |
16447 | ||
c906108c | 16448 | static unsigned int |
a1855c1d | 16449 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16450 | { |
fe1b8b76 | 16451 | return bfd_get_32 (abfd, buf); |
c906108c SS |
16452 | } |
16453 | ||
21ae7a4d | 16454 | static int |
a1855c1d | 16455 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16456 | { |
16457 | return bfd_get_signed_32 (abfd, buf); | |
16458 | } | |
16459 | ||
93311388 | 16460 | static ULONGEST |
a1855c1d | 16461 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16462 | { |
fe1b8b76 | 16463 | return bfd_get_64 (abfd, buf); |
c906108c SS |
16464 | } |
16465 | ||
16466 | static CORE_ADDR | |
d521ce57 | 16467 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 16468 | unsigned int *bytes_read) |
c906108c | 16469 | { |
e7c27a73 | 16470 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16471 | CORE_ADDR retval = 0; |
16472 | ||
107d2387 | 16473 | if (cu_header->signed_addr_p) |
c906108c | 16474 | { |
107d2387 AC |
16475 | switch (cu_header->addr_size) |
16476 | { | |
16477 | case 2: | |
fe1b8b76 | 16478 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
16479 | break; |
16480 | case 4: | |
fe1b8b76 | 16481 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
16482 | break; |
16483 | case 8: | |
fe1b8b76 | 16484 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
16485 | break; |
16486 | default: | |
8e65ff28 | 16487 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 16488 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 16489 | bfd_get_filename (abfd)); |
107d2387 AC |
16490 | } |
16491 | } | |
16492 | else | |
16493 | { | |
16494 | switch (cu_header->addr_size) | |
16495 | { | |
16496 | case 2: | |
fe1b8b76 | 16497 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
16498 | break; |
16499 | case 4: | |
fe1b8b76 | 16500 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
16501 | break; |
16502 | case 8: | |
fe1b8b76 | 16503 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
16504 | break; |
16505 | default: | |
8e65ff28 | 16506 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
16507 | _("read_address: bad switch, " |
16508 | "unsigned [in module %s]"), | |
659b0389 | 16509 | bfd_get_filename (abfd)); |
107d2387 | 16510 | } |
c906108c | 16511 | } |
64367e0a | 16512 | |
107d2387 AC |
16513 | *bytes_read = cu_header->addr_size; |
16514 | return retval; | |
c906108c SS |
16515 | } |
16516 | ||
f7ef9339 | 16517 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
16518 | specification allows the initial length to take up either 4 bytes |
16519 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
16520 | bytes describe the length and all offsets will be 8 bytes in length | |
16521 | instead of 4. | |
16522 | ||
f7ef9339 KB |
16523 | An older, non-standard 64-bit format is also handled by this |
16524 | function. The older format in question stores the initial length | |
16525 | as an 8-byte quantity without an escape value. Lengths greater | |
16526 | than 2^32 aren't very common which means that the initial 4 bytes | |
16527 | is almost always zero. Since a length value of zero doesn't make | |
16528 | sense for the 32-bit format, this initial zero can be considered to | |
16529 | be an escape value which indicates the presence of the older 64-bit | |
16530 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
16531 | greater than 4GB. If it becomes necessary to handle lengths |
16532 | somewhat larger than 4GB, we could allow other small values (such | |
16533 | as the non-sensical values of 1, 2, and 3) to also be used as | |
16534 | escape values indicating the presence of the old format. | |
f7ef9339 | 16535 | |
917c78fc MK |
16536 | The value returned via bytes_read should be used to increment the |
16537 | relevant pointer after calling read_initial_length(). | |
c764a876 | 16538 | |
613e1657 KB |
16539 | [ Note: read_initial_length() and read_offset() are based on the |
16540 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 16541 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
16542 | from: |
16543 | ||
f7ef9339 | 16544 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 16545 | |
613e1657 KB |
16546 | This document is only a draft and is subject to change. (So beware.) |
16547 | ||
f7ef9339 | 16548 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
16549 | determined empirically by examining 64-bit ELF files produced by |
16550 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
16551 | |
16552 | - Kevin, July 16, 2002 | |
613e1657 KB |
16553 | ] */ |
16554 | ||
16555 | static LONGEST | |
d521ce57 | 16556 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 16557 | { |
fe1b8b76 | 16558 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 16559 | |
dd373385 | 16560 | if (length == 0xffffffff) |
613e1657 | 16561 | { |
fe1b8b76 | 16562 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 16563 | *bytes_read = 12; |
613e1657 | 16564 | } |
dd373385 | 16565 | else if (length == 0) |
f7ef9339 | 16566 | { |
dd373385 | 16567 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 16568 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 16569 | *bytes_read = 8; |
f7ef9339 | 16570 | } |
613e1657 KB |
16571 | else |
16572 | { | |
16573 | *bytes_read = 4; | |
613e1657 KB |
16574 | } |
16575 | ||
c764a876 DE |
16576 | return length; |
16577 | } | |
dd373385 | 16578 | |
c764a876 DE |
16579 | /* Cover function for read_initial_length. |
16580 | Returns the length of the object at BUF, and stores the size of the | |
16581 | initial length in *BYTES_READ and stores the size that offsets will be in | |
16582 | *OFFSET_SIZE. | |
16583 | If the initial length size is not equivalent to that specified in | |
16584 | CU_HEADER then issue a complaint. | |
16585 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 16586 | |
c764a876 | 16587 | static LONGEST |
d521ce57 | 16588 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
16589 | const struct comp_unit_head *cu_header, |
16590 | unsigned int *bytes_read, | |
16591 | unsigned int *offset_size) | |
16592 | { | |
16593 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
16594 | ||
16595 | gdb_assert (cu_header->initial_length_size == 4 | |
16596 | || cu_header->initial_length_size == 8 | |
16597 | || cu_header->initial_length_size == 12); | |
16598 | ||
16599 | if (cu_header->initial_length_size != *bytes_read) | |
16600 | complaint (&symfile_complaints, | |
16601 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 16602 | |
c764a876 | 16603 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 16604 | return length; |
613e1657 KB |
16605 | } |
16606 | ||
16607 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 16608 | given by cu_header->offset_size. */ |
613e1657 KB |
16609 | |
16610 | static LONGEST | |
d521ce57 TT |
16611 | read_offset (bfd *abfd, const gdb_byte *buf, |
16612 | const struct comp_unit_head *cu_header, | |
891d2f0b | 16613 | unsigned int *bytes_read) |
c764a876 DE |
16614 | { |
16615 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 16616 | |
c764a876 DE |
16617 | *bytes_read = cu_header->offset_size; |
16618 | return offset; | |
16619 | } | |
16620 | ||
16621 | /* Read an offset from the data stream. */ | |
16622 | ||
16623 | static LONGEST | |
d521ce57 | 16624 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
16625 | { |
16626 | LONGEST retval = 0; | |
16627 | ||
c764a876 | 16628 | switch (offset_size) |
613e1657 KB |
16629 | { |
16630 | case 4: | |
fe1b8b76 | 16631 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
16632 | break; |
16633 | case 8: | |
fe1b8b76 | 16634 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
16635 | break; |
16636 | default: | |
8e65ff28 | 16637 | internal_error (__FILE__, __LINE__, |
c764a876 | 16638 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 16639 | bfd_get_filename (abfd)); |
613e1657 KB |
16640 | } |
16641 | ||
917c78fc | 16642 | return retval; |
613e1657 KB |
16643 | } |
16644 | ||
d521ce57 TT |
16645 | static const gdb_byte * |
16646 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
16647 | { |
16648 | /* If the size of a host char is 8 bits, we can return a pointer | |
16649 | to the buffer, otherwise we have to copy the data to a buffer | |
16650 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16651 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 16652 | return buf; |
c906108c SS |
16653 | } |
16654 | ||
d521ce57 TT |
16655 | static const char * |
16656 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
16657 | unsigned int *bytes_read_ptr) | |
c906108c SS |
16658 | { |
16659 | /* If the size of a host char is 8 bits, we can return a pointer | |
16660 | to the string, otherwise we have to copy the string to a buffer | |
16661 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16662 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
16663 | if (*buf == '\0') |
16664 | { | |
16665 | *bytes_read_ptr = 1; | |
16666 | return NULL; | |
16667 | } | |
d521ce57 TT |
16668 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
16669 | return (const char *) buf; | |
4bdf3d34 JJ |
16670 | } |
16671 | ||
d521ce57 | 16672 | static const char * |
cf2c3c16 | 16673 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 16674 | { |
be391dca | 16675 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 16676 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
16677 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
16678 | bfd_get_filename (abfd)); | |
dce234bc | 16679 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
16680 | error (_("DW_FORM_strp pointing outside of " |
16681 | ".debug_str section [in module %s]"), | |
16682 | bfd_get_filename (abfd)); | |
4bdf3d34 | 16683 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 16684 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 16685 | return NULL; |
d521ce57 | 16686 | return (const char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
16687 | } |
16688 | ||
36586728 TT |
16689 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
16690 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
16691 | the string consists of a single NUL byte, return NULL; otherwise | |
16692 | return a pointer to the string. */ | |
16693 | ||
d521ce57 | 16694 | static const char * |
36586728 TT |
16695 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
16696 | { | |
16697 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
16698 | ||
16699 | if (dwz->str.buffer == NULL) | |
16700 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
16701 | "section [in module %s]"), | |
16702 | bfd_get_filename (dwz->dwz_bfd)); | |
16703 | if (str_offset >= dwz->str.size) | |
16704 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
16705 | ".debug_str section [in module %s]"), | |
16706 | bfd_get_filename (dwz->dwz_bfd)); | |
16707 | gdb_assert (HOST_CHAR_BIT == 8); | |
16708 | if (dwz->str.buffer[str_offset] == '\0') | |
16709 | return NULL; | |
d521ce57 | 16710 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
16711 | } |
16712 | ||
d521ce57 TT |
16713 | static const char * |
16714 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
16715 | const struct comp_unit_head *cu_header, |
16716 | unsigned int *bytes_read_ptr) | |
16717 | { | |
16718 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
16719 | ||
16720 | return read_indirect_string_at_offset (abfd, str_offset); | |
16721 | } | |
16722 | ||
12df843f | 16723 | static ULONGEST |
d521ce57 TT |
16724 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
16725 | unsigned int *bytes_read_ptr) | |
c906108c | 16726 | { |
12df843f | 16727 | ULONGEST result; |
ce5d95e1 | 16728 | unsigned int num_read; |
c906108c SS |
16729 | int i, shift; |
16730 | unsigned char byte; | |
16731 | ||
16732 | result = 0; | |
16733 | shift = 0; | |
16734 | num_read = 0; | |
16735 | i = 0; | |
16736 | while (1) | |
16737 | { | |
fe1b8b76 | 16738 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16739 | buf++; |
16740 | num_read++; | |
12df843f | 16741 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
16742 | if ((byte & 128) == 0) |
16743 | { | |
16744 | break; | |
16745 | } | |
16746 | shift += 7; | |
16747 | } | |
16748 | *bytes_read_ptr = num_read; | |
16749 | return result; | |
16750 | } | |
16751 | ||
12df843f | 16752 | static LONGEST |
d521ce57 TT |
16753 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
16754 | unsigned int *bytes_read_ptr) | |
c906108c | 16755 | { |
12df843f | 16756 | LONGEST result; |
77e0b926 | 16757 | int i, shift, num_read; |
c906108c SS |
16758 | unsigned char byte; |
16759 | ||
16760 | result = 0; | |
16761 | shift = 0; | |
c906108c SS |
16762 | num_read = 0; |
16763 | i = 0; | |
16764 | while (1) | |
16765 | { | |
fe1b8b76 | 16766 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16767 | buf++; |
16768 | num_read++; | |
12df843f | 16769 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
16770 | shift += 7; |
16771 | if ((byte & 128) == 0) | |
16772 | { | |
16773 | break; | |
16774 | } | |
16775 | } | |
77e0b926 | 16776 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 16777 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
16778 | *bytes_read_ptr = num_read; |
16779 | return result; | |
16780 | } | |
16781 | ||
3019eac3 DE |
16782 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
16783 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
16784 | ADDR_SIZE is the size of addresses from the CU header. */ | |
16785 | ||
16786 | static CORE_ADDR | |
16787 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
16788 | { | |
16789 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
16790 | bfd *abfd = objfile->obfd; | |
16791 | const gdb_byte *info_ptr; | |
16792 | ||
16793 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
16794 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
16795 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 16796 | objfile_name (objfile)); |
3019eac3 DE |
16797 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
16798 | error (_("DW_FORM_addr_index pointing outside of " | |
16799 | ".debug_addr section [in module %s]"), | |
4262abfb | 16800 | objfile_name (objfile)); |
3019eac3 DE |
16801 | info_ptr = (dwarf2_per_objfile->addr.buffer |
16802 | + addr_base + addr_index * addr_size); | |
16803 | if (addr_size == 4) | |
16804 | return bfd_get_32 (abfd, info_ptr); | |
16805 | else | |
16806 | return bfd_get_64 (abfd, info_ptr); | |
16807 | } | |
16808 | ||
16809 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
16810 | ||
16811 | static CORE_ADDR | |
16812 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
16813 | { | |
16814 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
16815 | } | |
16816 | ||
16817 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
16818 | ||
16819 | static CORE_ADDR | |
d521ce57 | 16820 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
16821 | unsigned int *bytes_read) |
16822 | { | |
16823 | bfd *abfd = cu->objfile->obfd; | |
16824 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
16825 | ||
16826 | return read_addr_index (cu, addr_index); | |
16827 | } | |
16828 | ||
16829 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
16830 | back to dwarf2_read_addr_index. */ | |
16831 | ||
16832 | struct dwarf2_read_addr_index_data | |
16833 | { | |
16834 | ULONGEST addr_base; | |
16835 | int addr_size; | |
16836 | }; | |
16837 | ||
16838 | /* die_reader_func for dwarf2_read_addr_index. */ | |
16839 | ||
16840 | static void | |
16841 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 16842 | const gdb_byte *info_ptr, |
3019eac3 DE |
16843 | struct die_info *comp_unit_die, |
16844 | int has_children, | |
16845 | void *data) | |
16846 | { | |
16847 | struct dwarf2_cu *cu = reader->cu; | |
16848 | struct dwarf2_read_addr_index_data *aidata = | |
16849 | (struct dwarf2_read_addr_index_data *) data; | |
16850 | ||
16851 | aidata->addr_base = cu->addr_base; | |
16852 | aidata->addr_size = cu->header.addr_size; | |
16853 | } | |
16854 | ||
16855 | /* Given an index in .debug_addr, fetch the value. | |
16856 | NOTE: This can be called during dwarf expression evaluation, | |
16857 | long after the debug information has been read, and thus per_cu->cu | |
16858 | may no longer exist. */ | |
16859 | ||
16860 | CORE_ADDR | |
16861 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
16862 | unsigned int addr_index) | |
16863 | { | |
16864 | struct objfile *objfile = per_cu->objfile; | |
16865 | struct dwarf2_cu *cu = per_cu->cu; | |
16866 | ULONGEST addr_base; | |
16867 | int addr_size; | |
16868 | ||
16869 | /* This is intended to be called from outside this file. */ | |
16870 | dw2_setup (objfile); | |
16871 | ||
16872 | /* We need addr_base and addr_size. | |
16873 | If we don't have PER_CU->cu, we have to get it. | |
16874 | Nasty, but the alternative is storing the needed info in PER_CU, | |
16875 | which at this point doesn't seem justified: it's not clear how frequently | |
16876 | it would get used and it would increase the size of every PER_CU. | |
16877 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
16878 | so we're not in uncharted territory here. | |
16879 | Alas we need to be a bit more complicated as addr_base is contained | |
16880 | in the DIE. | |
16881 | ||
16882 | We don't need to read the entire CU(/TU). | |
16883 | We just need the header and top level die. | |
a1b64ce1 | 16884 | |
3019eac3 | 16885 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 16886 | For now we skip this optimization. */ |
3019eac3 DE |
16887 | |
16888 | if (cu != NULL) | |
16889 | { | |
16890 | addr_base = cu->addr_base; | |
16891 | addr_size = cu->header.addr_size; | |
16892 | } | |
16893 | else | |
16894 | { | |
16895 | struct dwarf2_read_addr_index_data aidata; | |
16896 | ||
a1b64ce1 DE |
16897 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
16898 | we need addr_base. */ | |
16899 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
16900 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
16901 | addr_base = aidata.addr_base; |
16902 | addr_size = aidata.addr_size; | |
16903 | } | |
16904 | ||
16905 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
16906 | } | |
16907 | ||
57d63ce2 DE |
16908 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
16909 | This is only used by the Fission support. */ | |
3019eac3 | 16910 | |
d521ce57 | 16911 | static const char * |
342587c4 | 16912 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 DE |
16913 | { |
16914 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
c5164cbc | 16915 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 16916 | bfd *abfd = objfile->obfd; |
342587c4 | 16917 | struct dwarf2_cu *cu = reader->cu; |
73869dc2 DE |
16918 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
16919 | struct dwarf2_section_info *str_offsets_section = | |
16920 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 16921 | const gdb_byte *info_ptr; |
3019eac3 | 16922 | ULONGEST str_offset; |
57d63ce2 | 16923 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 16924 | |
73869dc2 DE |
16925 | dwarf2_read_section (objfile, str_section); |
16926 | dwarf2_read_section (objfile, str_offsets_section); | |
16927 | if (str_section->buffer == NULL) | |
57d63ce2 | 16928 | error (_("%s used without .debug_str.dwo section" |
3019eac3 | 16929 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16930 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16931 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 16932 | error (_("%s used without .debug_str_offsets.dwo section" |
3019eac3 | 16933 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16934 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16935 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 16936 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
3019eac3 | 16937 | " section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16938 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16939 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
16940 | + str_index * cu->header.offset_size); |
16941 | if (cu->header.offset_size == 4) | |
16942 | str_offset = bfd_get_32 (abfd, info_ptr); | |
16943 | else | |
16944 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 16945 | if (str_offset >= str_section->size) |
57d63ce2 | 16946 | error (_("Offset from %s pointing outside of" |
3019eac3 | 16947 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16948 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16949 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
16950 | } |
16951 | ||
3019eac3 DE |
16952 | /* Return the length of an LEB128 number in BUF. */ |
16953 | ||
16954 | static int | |
16955 | leb128_size (const gdb_byte *buf) | |
16956 | { | |
16957 | const gdb_byte *begin = buf; | |
16958 | gdb_byte byte; | |
16959 | ||
16960 | while (1) | |
16961 | { | |
16962 | byte = *buf++; | |
16963 | if ((byte & 128) == 0) | |
16964 | return buf - begin; | |
16965 | } | |
16966 | } | |
16967 | ||
c906108c | 16968 | static void |
e142c38c | 16969 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
16970 | { |
16971 | switch (lang) | |
16972 | { | |
16973 | case DW_LANG_C89: | |
76bee0cc | 16974 | case DW_LANG_C99: |
0cfd832f | 16975 | case DW_LANG_C11: |
c906108c | 16976 | case DW_LANG_C: |
d1be3247 | 16977 | case DW_LANG_UPC: |
e142c38c | 16978 | cu->language = language_c; |
c906108c SS |
16979 | break; |
16980 | case DW_LANG_C_plus_plus: | |
0cfd832f MW |
16981 | case DW_LANG_C_plus_plus_11: |
16982 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 16983 | cu->language = language_cplus; |
c906108c | 16984 | break; |
6aecb9c2 JB |
16985 | case DW_LANG_D: |
16986 | cu->language = language_d; | |
16987 | break; | |
c906108c SS |
16988 | case DW_LANG_Fortran77: |
16989 | case DW_LANG_Fortran90: | |
b21b22e0 | 16990 | case DW_LANG_Fortran95: |
f7de9aab MW |
16991 | case DW_LANG_Fortran03: |
16992 | case DW_LANG_Fortran08: | |
e142c38c | 16993 | cu->language = language_fortran; |
c906108c | 16994 | break; |
a766d390 DE |
16995 | case DW_LANG_Go: |
16996 | cu->language = language_go; | |
16997 | break; | |
c906108c | 16998 | case DW_LANG_Mips_Assembler: |
e142c38c | 16999 | cu->language = language_asm; |
c906108c | 17000 | break; |
bebd888e | 17001 | case DW_LANG_Java: |
e142c38c | 17002 | cu->language = language_java; |
bebd888e | 17003 | break; |
c906108c | 17004 | case DW_LANG_Ada83: |
8aaf0b47 | 17005 | case DW_LANG_Ada95: |
bc5f45f8 JB |
17006 | cu->language = language_ada; |
17007 | break; | |
72019c9c GM |
17008 | case DW_LANG_Modula2: |
17009 | cu->language = language_m2; | |
17010 | break; | |
fe8e67fd PM |
17011 | case DW_LANG_Pascal83: |
17012 | cu->language = language_pascal; | |
17013 | break; | |
22566fbd DJ |
17014 | case DW_LANG_ObjC: |
17015 | cu->language = language_objc; | |
17016 | break; | |
c906108c SS |
17017 | case DW_LANG_Cobol74: |
17018 | case DW_LANG_Cobol85: | |
c906108c | 17019 | default: |
e142c38c | 17020 | cu->language = language_minimal; |
c906108c SS |
17021 | break; |
17022 | } | |
e142c38c | 17023 | cu->language_defn = language_def (cu->language); |
c906108c SS |
17024 | } |
17025 | ||
17026 | /* Return the named attribute or NULL if not there. */ | |
17027 | ||
17028 | static struct attribute * | |
e142c38c | 17029 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 17030 | { |
a48e046c | 17031 | for (;;) |
c906108c | 17032 | { |
a48e046c TT |
17033 | unsigned int i; |
17034 | struct attribute *spec = NULL; | |
17035 | ||
17036 | for (i = 0; i < die->num_attrs; ++i) | |
17037 | { | |
17038 | if (die->attrs[i].name == name) | |
17039 | return &die->attrs[i]; | |
17040 | if (die->attrs[i].name == DW_AT_specification | |
17041 | || die->attrs[i].name == DW_AT_abstract_origin) | |
17042 | spec = &die->attrs[i]; | |
17043 | } | |
17044 | ||
17045 | if (!spec) | |
17046 | break; | |
c906108c | 17047 | |
f2f0e013 | 17048 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 17049 | } |
c5aa993b | 17050 | |
c906108c SS |
17051 | return NULL; |
17052 | } | |
17053 | ||
348e048f DE |
17054 | /* Return the named attribute or NULL if not there, |
17055 | but do not follow DW_AT_specification, etc. | |
17056 | This is for use in contexts where we're reading .debug_types dies. | |
17057 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
17058 | back up the chain, and we want to go down. */ | |
17059 | ||
17060 | static struct attribute * | |
45e58e77 | 17061 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
17062 | { |
17063 | unsigned int i; | |
17064 | ||
17065 | for (i = 0; i < die->num_attrs; ++i) | |
17066 | if (die->attrs[i].name == name) | |
17067 | return &die->attrs[i]; | |
17068 | ||
17069 | return NULL; | |
17070 | } | |
17071 | ||
05cf31d1 JB |
17072 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
17073 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 17074 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
17075 | |
17076 | static int | |
17077 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
17078 | { | |
17079 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
17080 | ||
17081 | return (attr && DW_UNSND (attr)); | |
17082 | } | |
17083 | ||
3ca72b44 | 17084 | static int |
e142c38c | 17085 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 17086 | { |
05cf31d1 JB |
17087 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
17088 | which value is non-zero. However, we have to be careful with | |
17089 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
17090 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
17091 | end up accidently finding a declaration attribute that belongs | |
17092 | to a different DIE referenced by the specification attribute, | |
17093 | even though the given DIE does not have a declaration attribute. */ | |
17094 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
17095 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
17096 | } |
17097 | ||
63d06c5c | 17098 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 17099 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
17100 | containing the return value on output. If there is no |
17101 | specification, but there is an abstract origin, that is | |
17102 | returned. */ | |
63d06c5c DC |
17103 | |
17104 | static struct die_info * | |
f2f0e013 | 17105 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 17106 | { |
f2f0e013 DJ |
17107 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
17108 | *spec_cu); | |
63d06c5c | 17109 | |
edb3359d DJ |
17110 | if (spec_attr == NULL) |
17111 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
17112 | ||
63d06c5c DC |
17113 | if (spec_attr == NULL) |
17114 | return NULL; | |
17115 | else | |
f2f0e013 | 17116 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 17117 | } |
c906108c | 17118 | |
debd256d | 17119 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
17120 | refers to. |
17121 | NOTE: This is also used as a "cleanup" function. */ | |
17122 | ||
debd256d JB |
17123 | static void |
17124 | free_line_header (struct line_header *lh) | |
17125 | { | |
17126 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 17127 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
17128 | |
17129 | /* Remember that all the lh->file_names[i].name pointers are | |
17130 | pointers into debug_line_buffer, and don't need to be freed. */ | |
17131 | if (lh->file_names) | |
a8bc7b56 | 17132 | xfree (lh->file_names); |
debd256d JB |
17133 | |
17134 | /* Similarly for the include directory names. */ | |
17135 | if (lh->include_dirs) | |
a8bc7b56 | 17136 | xfree (lh->include_dirs); |
debd256d | 17137 | |
a8bc7b56 | 17138 | xfree (lh); |
debd256d JB |
17139 | } |
17140 | ||
527f3840 JK |
17141 | /* Stub for free_line_header to match void * callback types. */ |
17142 | ||
17143 | static void | |
17144 | free_line_header_voidp (void *arg) | |
17145 | { | |
17146 | struct line_header *lh = arg; | |
17147 | ||
17148 | free_line_header (lh); | |
17149 | } | |
17150 | ||
debd256d | 17151 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 17152 | |
debd256d | 17153 | static void |
d521ce57 | 17154 | add_include_dir (struct line_header *lh, const char *include_dir) |
c906108c | 17155 | { |
27e0867f DE |
17156 | if (dwarf_line_debug >= 2) |
17157 | fprintf_unfiltered (gdb_stdlog, "Adding dir %u: %s\n", | |
17158 | lh->num_include_dirs + 1, include_dir); | |
17159 | ||
debd256d JB |
17160 | /* Grow the array if necessary. */ |
17161 | if (lh->include_dirs_size == 0) | |
c5aa993b | 17162 | { |
debd256d JB |
17163 | lh->include_dirs_size = 1; /* for testing */ |
17164 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
17165 | * sizeof (*lh->include_dirs)); | |
17166 | } | |
17167 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
17168 | { | |
17169 | lh->include_dirs_size *= 2; | |
17170 | lh->include_dirs = xrealloc (lh->include_dirs, | |
17171 | (lh->include_dirs_size | |
17172 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 17173 | } |
c906108c | 17174 | |
debd256d JB |
17175 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
17176 | } | |
6e70227d | 17177 | |
debd256d | 17178 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 17179 | |
debd256d JB |
17180 | static void |
17181 | add_file_name (struct line_header *lh, | |
d521ce57 | 17182 | const char *name, |
debd256d JB |
17183 | unsigned int dir_index, |
17184 | unsigned int mod_time, | |
17185 | unsigned int length) | |
17186 | { | |
17187 | struct file_entry *fe; | |
17188 | ||
27e0867f DE |
17189 | if (dwarf_line_debug >= 2) |
17190 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
17191 | lh->num_file_names + 1, name); | |
17192 | ||
debd256d JB |
17193 | /* Grow the array if necessary. */ |
17194 | if (lh->file_names_size == 0) | |
17195 | { | |
17196 | lh->file_names_size = 1; /* for testing */ | |
17197 | lh->file_names = xmalloc (lh->file_names_size | |
17198 | * sizeof (*lh->file_names)); | |
17199 | } | |
17200 | else if (lh->num_file_names >= lh->file_names_size) | |
17201 | { | |
17202 | lh->file_names_size *= 2; | |
17203 | lh->file_names = xrealloc (lh->file_names, | |
17204 | (lh->file_names_size | |
17205 | * sizeof (*lh->file_names))); | |
17206 | } | |
17207 | ||
17208 | fe = &lh->file_names[lh->num_file_names++]; | |
17209 | fe->name = name; | |
17210 | fe->dir_index = dir_index; | |
17211 | fe->mod_time = mod_time; | |
17212 | fe->length = length; | |
aaa75496 | 17213 | fe->included_p = 0; |
cb1df416 | 17214 | fe->symtab = NULL; |
debd256d | 17215 | } |
6e70227d | 17216 | |
83769d0b | 17217 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
17218 | |
17219 | static struct dwarf2_section_info * | |
17220 | get_debug_line_section (struct dwarf2_cu *cu) | |
17221 | { | |
17222 | struct dwarf2_section_info *section; | |
17223 | ||
17224 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
17225 | DWO file. */ | |
17226 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
17227 | section = &cu->dwo_unit->dwo_file->sections.line; | |
17228 | else if (cu->per_cu->is_dwz) | |
17229 | { | |
17230 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
17231 | ||
17232 | section = &dwz->line; | |
17233 | } | |
17234 | else | |
17235 | section = &dwarf2_per_objfile->line; | |
17236 | ||
17237 | return section; | |
17238 | } | |
17239 | ||
debd256d | 17240 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 17241 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 17242 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
17243 | Returns NULL if there is a problem reading the header, e.g., if it |
17244 | has a version we don't understand. | |
debd256d JB |
17245 | |
17246 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
17247 | the returned object point into the dwarf line section buffer, |
17248 | and must not be freed. */ | |
ae2de4f8 | 17249 | |
debd256d | 17250 | static struct line_header * |
3019eac3 | 17251 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
17252 | { |
17253 | struct cleanup *back_to; | |
17254 | struct line_header *lh; | |
d521ce57 | 17255 | const gdb_byte *line_ptr; |
c764a876 | 17256 | unsigned int bytes_read, offset_size; |
debd256d | 17257 | int i; |
d521ce57 | 17258 | const char *cur_dir, *cur_file; |
3019eac3 DE |
17259 | struct dwarf2_section_info *section; |
17260 | bfd *abfd; | |
17261 | ||
36586728 | 17262 | section = get_debug_line_section (cu); |
3019eac3 DE |
17263 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
17264 | if (section->buffer == NULL) | |
debd256d | 17265 | { |
3019eac3 DE |
17266 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
17267 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
17268 | else | |
17269 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
17270 | return 0; |
17271 | } | |
17272 | ||
fceca515 DE |
17273 | /* We can't do this until we know the section is non-empty. |
17274 | Only then do we know we have such a section. */ | |
a32a8923 | 17275 | abfd = get_section_bfd_owner (section); |
fceca515 | 17276 | |
a738430d MK |
17277 | /* Make sure that at least there's room for the total_length field. |
17278 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 17279 | if (offset + 4 >= section->size) |
debd256d | 17280 | { |
4d3c2250 | 17281 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
17282 | return 0; |
17283 | } | |
17284 | ||
17285 | lh = xmalloc (sizeof (*lh)); | |
17286 | memset (lh, 0, sizeof (*lh)); | |
17287 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
17288 | (void *) lh); | |
17289 | ||
527f3840 JK |
17290 | lh->offset.sect_off = offset; |
17291 | lh->offset_in_dwz = cu->per_cu->is_dwz; | |
17292 | ||
3019eac3 | 17293 | line_ptr = section->buffer + offset; |
debd256d | 17294 | |
a738430d | 17295 | /* Read in the header. */ |
6e70227d | 17296 | lh->total_length = |
c764a876 DE |
17297 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
17298 | &bytes_read, &offset_size); | |
debd256d | 17299 | line_ptr += bytes_read; |
3019eac3 | 17300 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 17301 | { |
4d3c2250 | 17302 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
2f324bf6 | 17303 | do_cleanups (back_to); |
debd256d JB |
17304 | return 0; |
17305 | } | |
17306 | lh->statement_program_end = line_ptr + lh->total_length; | |
17307 | lh->version = read_2_bytes (abfd, line_ptr); | |
17308 | line_ptr += 2; | |
cd366ee8 DE |
17309 | if (lh->version > 4) |
17310 | { | |
17311 | /* This is a version we don't understand. The format could have | |
17312 | changed in ways we don't handle properly so just punt. */ | |
17313 | complaint (&symfile_complaints, | |
17314 | _("unsupported version in .debug_line section")); | |
17315 | return NULL; | |
17316 | } | |
c764a876 DE |
17317 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
17318 | line_ptr += offset_size; | |
debd256d JB |
17319 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
17320 | line_ptr += 1; | |
2dc7f7b3 TT |
17321 | if (lh->version >= 4) |
17322 | { | |
17323 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
17324 | line_ptr += 1; | |
17325 | } | |
17326 | else | |
17327 | lh->maximum_ops_per_instruction = 1; | |
17328 | ||
17329 | if (lh->maximum_ops_per_instruction == 0) | |
17330 | { | |
17331 | lh->maximum_ops_per_instruction = 1; | |
17332 | complaint (&symfile_complaints, | |
3e43a32a MS |
17333 | _("invalid maximum_ops_per_instruction " |
17334 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
17335 | } |
17336 | ||
debd256d JB |
17337 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
17338 | line_ptr += 1; | |
17339 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
17340 | line_ptr += 1; | |
17341 | lh->line_range = read_1_byte (abfd, line_ptr); | |
17342 | line_ptr += 1; | |
17343 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
17344 | line_ptr += 1; | |
17345 | lh->standard_opcode_lengths | |
fe1b8b76 | 17346 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
17347 | |
17348 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
17349 | for (i = 1; i < lh->opcode_base; ++i) | |
17350 | { | |
17351 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
17352 | line_ptr += 1; | |
17353 | } | |
17354 | ||
a738430d | 17355 | /* Read directory table. */ |
9b1c24c8 | 17356 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
17357 | { |
17358 | line_ptr += bytes_read; | |
17359 | add_include_dir (lh, cur_dir); | |
17360 | } | |
17361 | line_ptr += bytes_read; | |
17362 | ||
a738430d | 17363 | /* Read file name table. */ |
9b1c24c8 | 17364 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
17365 | { |
17366 | unsigned int dir_index, mod_time, length; | |
17367 | ||
17368 | line_ptr += bytes_read; | |
17369 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17370 | line_ptr += bytes_read; | |
17371 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17372 | line_ptr += bytes_read; | |
17373 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17374 | line_ptr += bytes_read; | |
17375 | ||
17376 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
17377 | } | |
17378 | line_ptr += bytes_read; | |
6e70227d | 17379 | lh->statement_program_start = line_ptr; |
debd256d | 17380 | |
3019eac3 | 17381 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 17382 | complaint (&symfile_complaints, |
3e43a32a MS |
17383 | _("line number info header doesn't " |
17384 | "fit in `.debug_line' section")); | |
debd256d JB |
17385 | |
17386 | discard_cleanups (back_to); | |
17387 | return lh; | |
17388 | } | |
c906108c | 17389 | |
c6da4cef DE |
17390 | /* Subroutine of dwarf_decode_lines to simplify it. |
17391 | Return the file name of the psymtab for included file FILE_INDEX | |
17392 | in line header LH of PST. | |
17393 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17394 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
17395 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
17396 | ||
17397 | The function creates dangling cleanup registration. */ | |
c6da4cef | 17398 | |
d521ce57 | 17399 | static const char * |
c6da4cef DE |
17400 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
17401 | const struct partial_symtab *pst, | |
17402 | const char *comp_dir) | |
17403 | { | |
17404 | const struct file_entry fe = lh->file_names [file_index]; | |
d521ce57 TT |
17405 | const char *include_name = fe.name; |
17406 | const char *include_name_to_compare = include_name; | |
17407 | const char *dir_name = NULL; | |
72b9f47f TT |
17408 | const char *pst_filename; |
17409 | char *copied_name = NULL; | |
c6da4cef DE |
17410 | int file_is_pst; |
17411 | ||
afa6c9ab | 17412 | if (fe.dir_index && lh->include_dirs != NULL) |
c6da4cef DE |
17413 | dir_name = lh->include_dirs[fe.dir_index - 1]; |
17414 | ||
17415 | if (!IS_ABSOLUTE_PATH (include_name) | |
17416 | && (dir_name != NULL || comp_dir != NULL)) | |
17417 | { | |
17418 | /* Avoid creating a duplicate psymtab for PST. | |
17419 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
17420 | Before we do the comparison, however, we need to account | |
17421 | for DIR_NAME and COMP_DIR. | |
17422 | First prepend dir_name (if non-NULL). If we still don't | |
17423 | have an absolute path prepend comp_dir (if non-NULL). | |
17424 | However, the directory we record in the include-file's | |
17425 | psymtab does not contain COMP_DIR (to match the | |
17426 | corresponding symtab(s)). | |
17427 | ||
17428 | Example: | |
17429 | ||
17430 | bash$ cd /tmp | |
17431 | bash$ gcc -g ./hello.c | |
17432 | include_name = "hello.c" | |
17433 | dir_name = "." | |
17434 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
17435 | DW_AT_name = "./hello.c" |
17436 | ||
17437 | */ | |
c6da4cef DE |
17438 | |
17439 | if (dir_name != NULL) | |
17440 | { | |
d521ce57 TT |
17441 | char *tem = concat (dir_name, SLASH_STRING, |
17442 | include_name, (char *)NULL); | |
17443 | ||
17444 | make_cleanup (xfree, tem); | |
17445 | include_name = tem; | |
c6da4cef | 17446 | include_name_to_compare = include_name; |
c6da4cef DE |
17447 | } |
17448 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
17449 | { | |
d521ce57 TT |
17450 | char *tem = concat (comp_dir, SLASH_STRING, |
17451 | include_name, (char *)NULL); | |
17452 | ||
17453 | make_cleanup (xfree, tem); | |
17454 | include_name_to_compare = tem; | |
c6da4cef DE |
17455 | } |
17456 | } | |
17457 | ||
17458 | pst_filename = pst->filename; | |
17459 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
17460 | { | |
72b9f47f TT |
17461 | copied_name = concat (pst->dirname, SLASH_STRING, |
17462 | pst_filename, (char *)NULL); | |
17463 | pst_filename = copied_name; | |
c6da4cef DE |
17464 | } |
17465 | ||
1e3fad37 | 17466 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 17467 | |
72b9f47f TT |
17468 | if (copied_name != NULL) |
17469 | xfree (copied_name); | |
c6da4cef DE |
17470 | |
17471 | if (file_is_pst) | |
17472 | return NULL; | |
17473 | return include_name; | |
17474 | } | |
17475 | ||
d9b3de22 DE |
17476 | /* State machine to track the state of the line number program. */ |
17477 | ||
17478 | typedef struct | |
17479 | { | |
17480 | /* These are part of the standard DWARF line number state machine. */ | |
17481 | ||
17482 | unsigned char op_index; | |
17483 | unsigned int file; | |
17484 | unsigned int line; | |
17485 | CORE_ADDR address; | |
17486 | int is_stmt; | |
17487 | unsigned int discriminator; | |
17488 | ||
17489 | /* Additional bits of state we need to track. */ | |
17490 | ||
17491 | /* The last file that we called dwarf2_start_subfile for. | |
17492 | This is only used for TLLs. */ | |
17493 | unsigned int last_file; | |
17494 | /* The last file a line number was recorded for. */ | |
17495 | struct subfile *last_subfile; | |
17496 | ||
17497 | /* The function to call to record a line. */ | |
17498 | record_line_ftype *record_line; | |
17499 | ||
17500 | /* The last line number that was recorded, used to coalesce | |
17501 | consecutive entries for the same line. This can happen, for | |
17502 | example, when discriminators are present. PR 17276. */ | |
17503 | unsigned int last_line; | |
17504 | int line_has_non_zero_discriminator; | |
17505 | } lnp_state_machine; | |
17506 | ||
17507 | /* There's a lot of static state to pass to dwarf_record_line. | |
17508 | This keeps it all together. */ | |
17509 | ||
17510 | typedef struct | |
17511 | { | |
17512 | /* The gdbarch. */ | |
17513 | struct gdbarch *gdbarch; | |
17514 | ||
17515 | /* The line number header. */ | |
17516 | struct line_header *line_header; | |
17517 | ||
17518 | /* Non-zero if we're recording lines. | |
17519 | Otherwise we're building partial symtabs and are just interested in | |
17520 | finding include files mentioned by the line number program. */ | |
17521 | int record_lines_p; | |
17522 | } lnp_reader_state; | |
17523 | ||
c91513d8 PP |
17524 | /* Ignore this record_line request. */ |
17525 | ||
17526 | static void | |
17527 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
17528 | { | |
17529 | return; | |
17530 | } | |
17531 | ||
a05a36a5 DE |
17532 | /* Return non-zero if we should add LINE to the line number table. |
17533 | LINE is the line to add, LAST_LINE is the last line that was added, | |
17534 | LAST_SUBFILE is the subfile for LAST_LINE. | |
17535 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
17536 | had a non-zero discriminator. | |
17537 | ||
17538 | We have to be careful in the presence of discriminators. | |
17539 | E.g., for this line: | |
17540 | ||
17541 | for (i = 0; i < 100000; i++); | |
17542 | ||
17543 | clang can emit four line number entries for that one line, | |
17544 | each with a different discriminator. | |
17545 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
17546 | ||
17547 | However, we want gdb to coalesce all four entries into one. | |
17548 | Otherwise the user could stepi into the middle of the line and | |
17549 | gdb would get confused about whether the pc really was in the | |
17550 | middle of the line. | |
17551 | ||
17552 | Things are further complicated by the fact that two consecutive | |
17553 | line number entries for the same line is a heuristic used by gcc | |
17554 | to denote the end of the prologue. So we can't just discard duplicate | |
17555 | entries, we have to be selective about it. The heuristic we use is | |
17556 | that we only collapse consecutive entries for the same line if at least | |
17557 | one of those entries has a non-zero discriminator. PR 17276. | |
17558 | ||
17559 | Note: Addresses in the line number state machine can never go backwards | |
17560 | within one sequence, thus this coalescing is ok. */ | |
17561 | ||
17562 | static int | |
17563 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
17564 | int line_has_non_zero_discriminator, | |
17565 | struct subfile *last_subfile) | |
17566 | { | |
17567 | if (current_subfile != last_subfile) | |
17568 | return 1; | |
17569 | if (line != last_line) | |
17570 | return 1; | |
17571 | /* Same line for the same file that we've seen already. | |
17572 | As a last check, for pr 17276, only record the line if the line | |
17573 | has never had a non-zero discriminator. */ | |
17574 | if (!line_has_non_zero_discriminator) | |
17575 | return 1; | |
17576 | return 0; | |
17577 | } | |
17578 | ||
252a6764 DE |
17579 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
17580 | in the line table of subfile SUBFILE. */ | |
17581 | ||
17582 | static void | |
d9b3de22 DE |
17583 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
17584 | unsigned int line, CORE_ADDR address, | |
17585 | record_line_ftype p_record_line) | |
252a6764 DE |
17586 | { |
17587 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
17588 | ||
27e0867f DE |
17589 | if (dwarf_line_debug) |
17590 | { | |
17591 | fprintf_unfiltered (gdb_stdlog, | |
17592 | "Recording line %u, file %s, address %s\n", | |
17593 | line, lbasename (subfile->name), | |
17594 | paddress (gdbarch, address)); | |
17595 | } | |
17596 | ||
d5962de5 | 17597 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
17598 | } |
17599 | ||
17600 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
17601 | Mark the end of a set of line number records. | |
d9b3de22 | 17602 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
17603 | If SUBFILE is NULL the request is ignored. */ |
17604 | ||
17605 | static void | |
17606 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
17607 | CORE_ADDR address, record_line_ftype p_record_line) | |
17608 | { | |
27e0867f DE |
17609 | if (subfile == NULL) |
17610 | return; | |
17611 | ||
17612 | if (dwarf_line_debug) | |
17613 | { | |
17614 | fprintf_unfiltered (gdb_stdlog, | |
17615 | "Finishing current line, file %s, address %s\n", | |
17616 | lbasename (subfile->name), | |
17617 | paddress (gdbarch, address)); | |
17618 | } | |
17619 | ||
d9b3de22 DE |
17620 | dwarf_record_line_1 (gdbarch, subfile, 0, address, p_record_line); |
17621 | } | |
17622 | ||
17623 | /* Record the line in STATE. | |
17624 | END_SEQUENCE is non-zero if we're processing the end of a sequence. */ | |
17625 | ||
17626 | static void | |
17627 | dwarf_record_line (lnp_reader_state *reader, lnp_state_machine *state, | |
17628 | int end_sequence) | |
17629 | { | |
17630 | const struct line_header *lh = reader->line_header; | |
17631 | unsigned int file, line, discriminator; | |
17632 | int is_stmt; | |
17633 | ||
17634 | file = state->file; | |
17635 | line = state->line; | |
17636 | is_stmt = state->is_stmt; | |
17637 | discriminator = state->discriminator; | |
17638 | ||
17639 | if (dwarf_line_debug) | |
17640 | { | |
17641 | fprintf_unfiltered (gdb_stdlog, | |
17642 | "Processing actual line %u: file %u," | |
17643 | " address %s, is_stmt %u, discrim %u\n", | |
17644 | line, file, | |
17645 | paddress (reader->gdbarch, state->address), | |
17646 | is_stmt, discriminator); | |
17647 | } | |
17648 | ||
17649 | if (file == 0 || file - 1 >= lh->num_file_names) | |
17650 | dwarf2_debug_line_missing_file_complaint (); | |
17651 | /* For now we ignore lines not starting on an instruction boundary. | |
17652 | But not when processing end_sequence for compatibility with the | |
17653 | previous version of the code. */ | |
17654 | else if (state->op_index == 0 || end_sequence) | |
17655 | { | |
17656 | lh->file_names[file - 1].included_p = 1; | |
17657 | if (reader->record_lines_p && is_stmt) | |
17658 | { | |
e815d2d2 | 17659 | if (state->last_subfile != current_subfile || end_sequence) |
d9b3de22 DE |
17660 | { |
17661 | dwarf_finish_line (reader->gdbarch, state->last_subfile, | |
17662 | state->address, state->record_line); | |
17663 | } | |
17664 | ||
17665 | if (!end_sequence) | |
17666 | { | |
17667 | if (dwarf_record_line_p (line, state->last_line, | |
17668 | state->line_has_non_zero_discriminator, | |
17669 | state->last_subfile)) | |
17670 | { | |
17671 | dwarf_record_line_1 (reader->gdbarch, current_subfile, | |
17672 | line, state->address, | |
17673 | state->record_line); | |
17674 | } | |
17675 | state->last_subfile = current_subfile; | |
17676 | state->last_line = line; | |
17677 | } | |
17678 | } | |
17679 | } | |
17680 | } | |
17681 | ||
17682 | /* Initialize STATE for the start of a line number program. */ | |
17683 | ||
17684 | static void | |
17685 | init_lnp_state_machine (lnp_state_machine *state, | |
17686 | const lnp_reader_state *reader) | |
17687 | { | |
17688 | memset (state, 0, sizeof (*state)); | |
17689 | ||
17690 | /* Just starting, there is no "last file". */ | |
17691 | state->last_file = 0; | |
17692 | state->last_subfile = NULL; | |
17693 | ||
17694 | state->record_line = record_line; | |
17695 | ||
17696 | state->last_line = 0; | |
17697 | state->line_has_non_zero_discriminator = 0; | |
17698 | ||
17699 | /* Initialize these according to the DWARF spec. */ | |
17700 | state->op_index = 0; | |
17701 | state->file = 1; | |
17702 | state->line = 1; | |
17703 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there | |
17704 | was a line entry for it so that the backend has a chance to adjust it | |
17705 | and also record it in case it needs it. This is currently used by MIPS | |
17706 | code, cf. `mips_adjust_dwarf2_line'. */ | |
17707 | state->address = gdbarch_adjust_dwarf2_line (reader->gdbarch, 0, 0); | |
17708 | state->is_stmt = reader->line_header->default_is_stmt; | |
17709 | state->discriminator = 0; | |
252a6764 DE |
17710 | } |
17711 | ||
924c2928 DE |
17712 | /* Check address and if invalid nop-out the rest of the lines in this |
17713 | sequence. */ | |
17714 | ||
17715 | static void | |
d9b3de22 | 17716 | check_line_address (struct dwarf2_cu *cu, lnp_state_machine *state, |
924c2928 DE |
17717 | const gdb_byte *line_ptr, |
17718 | CORE_ADDR lowpc, CORE_ADDR address) | |
17719 | { | |
17720 | /* If address < lowpc then it's not a usable value, it's outside the | |
17721 | pc range of the CU. However, we restrict the test to only address | |
17722 | values of zero to preserve GDB's previous behaviour which is to | |
17723 | handle the specific case of a function being GC'd by the linker. */ | |
17724 | ||
17725 | if (address == 0 && address < lowpc) | |
17726 | { | |
17727 | /* This line table is for a function which has been | |
17728 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
17729 | ||
17730 | struct objfile *objfile = cu->objfile; | |
17731 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; | |
17732 | ||
17733 | complaint (&symfile_complaints, | |
17734 | _(".debug_line address at offset 0x%lx is 0 [in module %s]"), | |
17735 | line_offset, objfile_name (objfile)); | |
d9b3de22 DE |
17736 | state->record_line = noop_record_line; |
17737 | /* Note: sm.record_line is left as noop_record_line | |
924c2928 DE |
17738 | until we see DW_LNE_end_sequence. */ |
17739 | } | |
17740 | } | |
17741 | ||
f3f5162e | 17742 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
17743 | Process the line number information in LH. |
17744 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
17745 | program in order to set included_p for every referenced header. */ | |
debd256d | 17746 | |
c906108c | 17747 | static void |
43f3e411 DE |
17748 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
17749 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 17750 | { |
d521ce57 TT |
17751 | const gdb_byte *line_ptr, *extended_end; |
17752 | const gdb_byte *line_end; | |
a8c50c1f | 17753 | unsigned int bytes_read, extended_len; |
699ca60a | 17754 | unsigned char op_code, extended_op; |
e142c38c DJ |
17755 | CORE_ADDR baseaddr; |
17756 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 17757 | bfd *abfd = objfile->obfd; |
fbf65064 | 17758 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
d9b3de22 DE |
17759 | /* Non-zero if we're recording line info (as opposed to building partial |
17760 | symtabs). */ | |
17761 | int record_lines_p = !decode_for_pst_p; | |
17762 | /* A collection of things we need to pass to dwarf_record_line. */ | |
17763 | lnp_reader_state reader_state; | |
e142c38c DJ |
17764 | |
17765 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 17766 | |
debd256d JB |
17767 | line_ptr = lh->statement_program_start; |
17768 | line_end = lh->statement_program_end; | |
c906108c | 17769 | |
d9b3de22 DE |
17770 | reader_state.gdbarch = gdbarch; |
17771 | reader_state.line_header = lh; | |
17772 | reader_state.record_lines_p = record_lines_p; | |
17773 | ||
c906108c SS |
17774 | /* Read the statement sequences until there's nothing left. */ |
17775 | while (line_ptr < line_end) | |
17776 | { | |
d9b3de22 DE |
17777 | /* The DWARF line number program state machine. */ |
17778 | lnp_state_machine state_machine; | |
c906108c | 17779 | int end_sequence = 0; |
d9b3de22 DE |
17780 | |
17781 | /* Reset the state machine at the start of each sequence. */ | |
17782 | init_lnp_state_machine (&state_machine, &reader_state); | |
17783 | ||
17784 | if (record_lines_p && lh->num_file_names >= state_machine.file) | |
c906108c | 17785 | { |
aaa75496 | 17786 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
17787 | /* lh->include_dirs and lh->file_names are 0-based, but the |
17788 | directory and file name numbers in the statement program | |
17789 | are 1-based. */ | |
d9b3de22 | 17790 | struct file_entry *fe = &lh->file_names[state_machine.file - 1]; |
d521ce57 | 17791 | const char *dir = NULL; |
a738430d | 17792 | |
afa6c9ab | 17793 | if (fe->dir_index && lh->include_dirs != NULL) |
debd256d | 17794 | dir = lh->include_dirs[fe->dir_index - 1]; |
4f1520fb | 17795 | |
4d663531 | 17796 | dwarf2_start_subfile (fe->name, dir); |
c906108c SS |
17797 | } |
17798 | ||
a738430d | 17799 | /* Decode the table. */ |
d9b3de22 | 17800 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
17801 | { |
17802 | op_code = read_1_byte (abfd, line_ptr); | |
17803 | line_ptr += 1; | |
9aa1fe7e | 17804 | |
debd256d | 17805 | if (op_code >= lh->opcode_base) |
6e70227d | 17806 | { |
8e07a239 | 17807 | /* Special opcode. */ |
699ca60a | 17808 | unsigned char adj_opcode; |
3e29f34a | 17809 | CORE_ADDR addr_adj; |
a05a36a5 | 17810 | int line_delta; |
8e07a239 | 17811 | |
debd256d | 17812 | adj_opcode = op_code - lh->opcode_base; |
d9b3de22 DE |
17813 | addr_adj = (((state_machine.op_index |
17814 | + (adj_opcode / lh->line_range)) | |
2dc7f7b3 TT |
17815 | / lh->maximum_ops_per_instruction) |
17816 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
17817 | state_machine.address |
17818 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
17819 | state_machine.op_index = ((state_machine.op_index | |
17820 | + (adj_opcode / lh->line_range)) | |
17821 | % lh->maximum_ops_per_instruction); | |
a05a36a5 | 17822 | line_delta = lh->line_base + (adj_opcode % lh->line_range); |
d9b3de22 | 17823 | state_machine.line += line_delta; |
a05a36a5 | 17824 | if (line_delta != 0) |
d9b3de22 DE |
17825 | state_machine.line_has_non_zero_discriminator |
17826 | = state_machine.discriminator != 0; | |
17827 | ||
17828 | dwarf_record_line (&reader_state, &state_machine, 0); | |
17829 | state_machine.discriminator = 0; | |
9aa1fe7e GK |
17830 | } |
17831 | else switch (op_code) | |
c906108c SS |
17832 | { |
17833 | case DW_LNS_extended_op: | |
3e43a32a MS |
17834 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
17835 | &bytes_read); | |
473b7be6 | 17836 | line_ptr += bytes_read; |
a8c50c1f | 17837 | extended_end = line_ptr + extended_len; |
c906108c SS |
17838 | extended_op = read_1_byte (abfd, line_ptr); |
17839 | line_ptr += 1; | |
17840 | switch (extended_op) | |
17841 | { | |
17842 | case DW_LNE_end_sequence: | |
d9b3de22 | 17843 | state_machine.record_line = record_line; |
c906108c | 17844 | end_sequence = 1; |
c906108c SS |
17845 | break; |
17846 | case DW_LNE_set_address: | |
d9b3de22 DE |
17847 | { |
17848 | CORE_ADDR address | |
17849 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
17850 | ||
17851 | line_ptr += bytes_read; | |
17852 | check_line_address (cu, &state_machine, line_ptr, | |
17853 | lowpc, address); | |
17854 | state_machine.op_index = 0; | |
17855 | address += baseaddr; | |
17856 | state_machine.address | |
17857 | = gdbarch_adjust_dwarf2_line (gdbarch, address, 0); | |
17858 | } | |
c906108c SS |
17859 | break; |
17860 | case DW_LNE_define_file: | |
debd256d | 17861 | { |
d521ce57 | 17862 | const char *cur_file; |
debd256d | 17863 | unsigned int dir_index, mod_time, length; |
6e70227d | 17864 | |
3e43a32a MS |
17865 | cur_file = read_direct_string (abfd, line_ptr, |
17866 | &bytes_read); | |
debd256d JB |
17867 | line_ptr += bytes_read; |
17868 | dir_index = | |
17869 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17870 | line_ptr += bytes_read; | |
17871 | mod_time = | |
17872 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17873 | line_ptr += bytes_read; | |
17874 | length = | |
17875 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17876 | line_ptr += bytes_read; | |
17877 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
17878 | } | |
c906108c | 17879 | break; |
d0c6ba3d CC |
17880 | case DW_LNE_set_discriminator: |
17881 | /* The discriminator is not interesting to the debugger; | |
a05a36a5 DE |
17882 | just ignore it. We still need to check its value though: |
17883 | if there are consecutive entries for the same | |
17884 | (non-prologue) line we want to coalesce them. | |
17885 | PR 17276. */ | |
d9b3de22 DE |
17886 | state_machine.discriminator |
17887 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17888 | state_machine.line_has_non_zero_discriminator | |
17889 | |= state_machine.discriminator != 0; | |
a05a36a5 | 17890 | line_ptr += bytes_read; |
d0c6ba3d | 17891 | break; |
c906108c | 17892 | default: |
4d3c2250 | 17893 | complaint (&symfile_complaints, |
e2e0b3e5 | 17894 | _("mangled .debug_line section")); |
debd256d | 17895 | return; |
c906108c | 17896 | } |
a8c50c1f DJ |
17897 | /* Make sure that we parsed the extended op correctly. If e.g. |
17898 | we expected a different address size than the producer used, | |
17899 | we may have read the wrong number of bytes. */ | |
17900 | if (line_ptr != extended_end) | |
17901 | { | |
17902 | complaint (&symfile_complaints, | |
17903 | _("mangled .debug_line section")); | |
17904 | return; | |
17905 | } | |
c906108c SS |
17906 | break; |
17907 | case DW_LNS_copy: | |
d9b3de22 DE |
17908 | dwarf_record_line (&reader_state, &state_machine, 0); |
17909 | state_machine.discriminator = 0; | |
c906108c SS |
17910 | break; |
17911 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
17912 | { |
17913 | CORE_ADDR adjust | |
17914 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
3e29f34a | 17915 | CORE_ADDR addr_adj; |
2dc7f7b3 | 17916 | |
d9b3de22 | 17917 | addr_adj = (((state_machine.op_index + adjust) |
2dc7f7b3 TT |
17918 | / lh->maximum_ops_per_instruction) |
17919 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
17920 | state_machine.address |
17921 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
17922 | state_machine.op_index = ((state_machine.op_index + adjust) | |
17923 | % lh->maximum_ops_per_instruction); | |
2dc7f7b3 TT |
17924 | line_ptr += bytes_read; |
17925 | } | |
c906108c SS |
17926 | break; |
17927 | case DW_LNS_advance_line: | |
a05a36a5 DE |
17928 | { |
17929 | int line_delta | |
17930 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
17931 | ||
d9b3de22 | 17932 | state_machine.line += line_delta; |
a05a36a5 | 17933 | if (line_delta != 0) |
d9b3de22 DE |
17934 | state_machine.line_has_non_zero_discriminator |
17935 | = state_machine.discriminator != 0; | |
a05a36a5 DE |
17936 | line_ptr += bytes_read; |
17937 | } | |
c906108c SS |
17938 | break; |
17939 | case DW_LNS_set_file: | |
d9b3de22 DE |
17940 | { |
17941 | /* The arrays lh->include_dirs and lh->file_names are | |
17942 | 0-based, but the directory and file name numbers in | |
17943 | the statement program are 1-based. */ | |
17944 | struct file_entry *fe; | |
17945 | const char *dir = NULL; | |
17946 | ||
17947 | state_machine.file = read_unsigned_leb128 (abfd, line_ptr, | |
17948 | &bytes_read); | |
17949 | line_ptr += bytes_read; | |
17950 | if (state_machine.file == 0 | |
17951 | || state_machine.file - 1 >= lh->num_file_names) | |
17952 | dwarf2_debug_line_missing_file_complaint (); | |
17953 | else | |
17954 | { | |
17955 | fe = &lh->file_names[state_machine.file - 1]; | |
17956 | if (fe->dir_index && lh->include_dirs != NULL) | |
17957 | dir = lh->include_dirs[fe->dir_index - 1]; | |
17958 | if (record_lines_p) | |
17959 | { | |
17960 | state_machine.last_subfile = current_subfile; | |
17961 | state_machine.line_has_non_zero_discriminator | |
17962 | = state_machine.discriminator != 0; | |
17963 | dwarf2_start_subfile (fe->name, dir); | |
17964 | } | |
17965 | } | |
17966 | } | |
c906108c SS |
17967 | break; |
17968 | case DW_LNS_set_column: | |
0ad93d4f | 17969 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
17970 | line_ptr += bytes_read; |
17971 | break; | |
17972 | case DW_LNS_negate_stmt: | |
d9b3de22 | 17973 | state_machine.is_stmt = (!state_machine.is_stmt); |
c906108c SS |
17974 | break; |
17975 | case DW_LNS_set_basic_block: | |
c906108c | 17976 | break; |
c2c6d25f JM |
17977 | /* Add to the address register of the state machine the |
17978 | address increment value corresponding to special opcode | |
a738430d MK |
17979 | 255. I.e., this value is scaled by the minimum |
17980 | instruction length since special opcode 255 would have | |
b021a221 | 17981 | scaled the increment. */ |
c906108c | 17982 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
17983 | { |
17984 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
3e29f34a | 17985 | CORE_ADDR addr_adj; |
2dc7f7b3 | 17986 | |
d9b3de22 | 17987 | addr_adj = (((state_machine.op_index + adjust) |
2dc7f7b3 TT |
17988 | / lh->maximum_ops_per_instruction) |
17989 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
17990 | state_machine.address |
17991 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
17992 | state_machine.op_index = ((state_machine.op_index + adjust) | |
17993 | % lh->maximum_ops_per_instruction); | |
2dc7f7b3 | 17994 | } |
c906108c SS |
17995 | break; |
17996 | case DW_LNS_fixed_advance_pc: | |
3e29f34a MR |
17997 | { |
17998 | CORE_ADDR addr_adj; | |
17999 | ||
18000 | addr_adj = read_2_bytes (abfd, line_ptr); | |
d9b3de22 DE |
18001 | state_machine.address |
18002 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
18003 | state_machine.op_index = 0; | |
3e29f34a MR |
18004 | line_ptr += 2; |
18005 | } | |
c906108c | 18006 | break; |
9aa1fe7e | 18007 | default: |
a738430d MK |
18008 | { |
18009 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 18010 | int i; |
a738430d | 18011 | |
debd256d | 18012 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
18013 | { |
18014 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18015 | line_ptr += bytes_read; | |
18016 | } | |
18017 | } | |
c906108c SS |
18018 | } |
18019 | } | |
d9b3de22 DE |
18020 | |
18021 | if (!end_sequence) | |
18022 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
18023 | ||
18024 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
18025 | in which case we still finish recording the last line). */ | |
18026 | dwarf_record_line (&reader_state, &state_machine, 1); | |
c906108c | 18027 | } |
f3f5162e DE |
18028 | } |
18029 | ||
18030 | /* Decode the Line Number Program (LNP) for the given line_header | |
18031 | structure and CU. The actual information extracted and the type | |
18032 | of structures created from the LNP depends on the value of PST. | |
18033 | ||
18034 | 1. If PST is NULL, then this procedure uses the data from the program | |
18035 | to create all necessary symbol tables, and their linetables. | |
18036 | ||
18037 | 2. If PST is not NULL, this procedure reads the program to determine | |
18038 | the list of files included by the unit represented by PST, and | |
18039 | builds all the associated partial symbol tables. | |
18040 | ||
18041 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
18042 | It is used for relative paths in the line table. | |
18043 | NOTE: When processing partial symtabs (pst != NULL), | |
18044 | comp_dir == pst->dirname. | |
18045 | ||
18046 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
18047 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
18048 | symtab we don't use it in the name of the psymtabs we create. | |
18049 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
18050 | A good testcase for this is mb-inline.exp. |
18051 | ||
527f3840 JK |
18052 | LOWPC is the lowest address in CU (or 0 if not known). |
18053 | ||
18054 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
18055 | for its PC<->lines mapping information. Otherwise only the filename | |
18056 | table is read in. */ | |
f3f5162e DE |
18057 | |
18058 | static void | |
18059 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 18060 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 18061 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e DE |
18062 | { |
18063 | struct objfile *objfile = cu->objfile; | |
18064 | const int decode_for_pst_p = (pst != NULL); | |
f3f5162e | 18065 | |
527f3840 JK |
18066 | if (decode_mapping) |
18067 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
18068 | |
18069 | if (decode_for_pst_p) | |
18070 | { | |
18071 | int file_index; | |
18072 | ||
18073 | /* Now that we're done scanning the Line Header Program, we can | |
18074 | create the psymtab of each included file. */ | |
18075 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
18076 | if (lh->file_names[file_index].included_p == 1) | |
18077 | { | |
d521ce57 | 18078 | const char *include_name = |
c6da4cef DE |
18079 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
18080 | if (include_name != NULL) | |
aaa75496 JB |
18081 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
18082 | } | |
18083 | } | |
cb1df416 DJ |
18084 | else |
18085 | { | |
18086 | /* Make sure a symtab is created for every file, even files | |
18087 | which contain only variables (i.e. no code with associated | |
18088 | line numbers). */ | |
43f3e411 | 18089 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 18090 | int i; |
cb1df416 DJ |
18091 | |
18092 | for (i = 0; i < lh->num_file_names; i++) | |
18093 | { | |
d521ce57 | 18094 | const char *dir = NULL; |
f3f5162e | 18095 | struct file_entry *fe; |
9a619af0 | 18096 | |
cb1df416 | 18097 | fe = &lh->file_names[i]; |
afa6c9ab | 18098 | if (fe->dir_index && lh->include_dirs != NULL) |
cb1df416 | 18099 | dir = lh->include_dirs[fe->dir_index - 1]; |
4d663531 | 18100 | dwarf2_start_subfile (fe->name, dir); |
cb1df416 | 18101 | |
cb1df416 | 18102 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
18103 | { |
18104 | current_subfile->symtab | |
18105 | = allocate_symtab (cust, current_subfile->name); | |
18106 | } | |
cb1df416 DJ |
18107 | fe->symtab = current_subfile->symtab; |
18108 | } | |
18109 | } | |
c906108c SS |
18110 | } |
18111 | ||
18112 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
18113 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 18114 | or NULL if not known. |
c906108c SS |
18115 | This routine tries to keep line numbers from identical absolute and |
18116 | relative file names in a common subfile. | |
18117 | ||
18118 | Using the `list' example from the GDB testsuite, which resides in | |
18119 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
18120 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
18121 | ||
c5aa993b | 18122 | DW_AT_name: /srcdir/list0.c |
4d663531 | 18123 | DW_AT_comp_dir: /compdir |
357e46e7 | 18124 | files.files[0].name: list0.h |
c5aa993b | 18125 | files.files[0].dir: /srcdir |
357e46e7 | 18126 | files.files[1].name: list0.c |
c5aa993b | 18127 | files.files[1].dir: /srcdir |
c906108c SS |
18128 | |
18129 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
18130 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
18131 | start_subfile will ensure that this happens provided that we pass the | |
18132 | concatenation of files.files[1].dir and files.files[1].name as the | |
18133 | subfile's name. */ | |
c906108c SS |
18134 | |
18135 | static void | |
4d663531 | 18136 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 18137 | { |
d521ce57 | 18138 | char *copy = NULL; |
4f1520fb | 18139 | |
4d663531 | 18140 | /* In order not to lose the line information directory, |
4f1520fb FR |
18141 | we concatenate it to the filename when it makes sense. |
18142 | Note that the Dwarf3 standard says (speaking of filenames in line | |
18143 | information): ``The directory index is ignored for file names | |
18144 | that represent full path names''. Thus ignoring dirname in the | |
18145 | `else' branch below isn't an issue. */ | |
c906108c | 18146 | |
d5166ae1 | 18147 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
18148 | { |
18149 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
18150 | filename = copy; | |
18151 | } | |
c906108c | 18152 | |
4d663531 | 18153 | start_subfile (filename); |
4f1520fb | 18154 | |
d521ce57 TT |
18155 | if (copy != NULL) |
18156 | xfree (copy); | |
c906108c SS |
18157 | } |
18158 | ||
f4dc4d17 DE |
18159 | /* Start a symtab for DWARF. |
18160 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
18161 | ||
43f3e411 | 18162 | static struct compunit_symtab * |
f4dc4d17 | 18163 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 18164 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 18165 | { |
43f3e411 DE |
18166 | struct compunit_symtab *cust |
18167 | = start_symtab (cu->objfile, name, comp_dir, low_pc); | |
18168 | ||
f4dc4d17 DE |
18169 | record_debugformat ("DWARF 2"); |
18170 | record_producer (cu->producer); | |
18171 | ||
18172 | /* We assume that we're processing GCC output. */ | |
18173 | processing_gcc_compilation = 2; | |
18174 | ||
4d4ec4e5 | 18175 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
18176 | |
18177 | return cust; | |
f4dc4d17 DE |
18178 | } |
18179 | ||
4c2df51b DJ |
18180 | static void |
18181 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 18182 | struct dwarf2_cu *cu) |
4c2df51b | 18183 | { |
e7c27a73 DJ |
18184 | struct objfile *objfile = cu->objfile; |
18185 | struct comp_unit_head *cu_header = &cu->header; | |
18186 | ||
4c2df51b DJ |
18187 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
18188 | code here to turn a symbol with DW_AT_external and a | |
18189 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
18190 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
18191 | with some versions of binutils) where shared libraries could have | |
18192 | relocations against symbols in their debug information - the | |
18193 | minimal symbol would have the right address, but the debug info | |
18194 | would not. It's no longer necessary, because we will explicitly | |
18195 | apply relocations when we read in the debug information now. */ | |
18196 | ||
18197 | /* A DW_AT_location attribute with no contents indicates that a | |
18198 | variable has been optimized away. */ | |
18199 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
18200 | { | |
f1e6e072 | 18201 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
18202 | return; |
18203 | } | |
18204 | ||
18205 | /* Handle one degenerate form of location expression specially, to | |
18206 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
18207 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
18208 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
18209 | |
18210 | if (attr_form_is_block (attr) | |
3019eac3 DE |
18211 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
18212 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
18213 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
18214 | && (DW_BLOCK (attr)->size | |
18215 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 18216 | { |
891d2f0b | 18217 | unsigned int dummy; |
4c2df51b | 18218 | |
3019eac3 DE |
18219 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
18220 | SYMBOL_VALUE_ADDRESS (sym) = | |
18221 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
18222 | else | |
18223 | SYMBOL_VALUE_ADDRESS (sym) = | |
18224 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 18225 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
18226 | fixup_symbol_section (sym, objfile); |
18227 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
18228 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
18229 | return; |
18230 | } | |
18231 | ||
18232 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
18233 | expression evaluator, and use LOC_COMPUTED only when necessary | |
18234 | (i.e. when the value of a register or memory location is | |
18235 | referenced, or a thread-local block, etc.). Then again, it might | |
18236 | not be worthwhile. I'm assuming that it isn't unless performance | |
18237 | or memory numbers show me otherwise. */ | |
18238 | ||
f1e6e072 | 18239 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 18240 | |
f1e6e072 | 18241 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 18242 | cu->has_loclist = 1; |
4c2df51b DJ |
18243 | } |
18244 | ||
c906108c SS |
18245 | /* Given a pointer to a DWARF information entry, figure out if we need |
18246 | to make a symbol table entry for it, and if so, create a new entry | |
18247 | and return a pointer to it. | |
18248 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
18249 | used the passed type. |
18250 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
18251 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
18252 | |
18253 | static struct symbol * | |
34eaf542 TT |
18254 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
18255 | struct symbol *space) | |
c906108c | 18256 | { |
e7c27a73 | 18257 | struct objfile *objfile = cu->objfile; |
3e29f34a | 18258 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 18259 | struct symbol *sym = NULL; |
15d034d0 | 18260 | const char *name; |
c906108c SS |
18261 | struct attribute *attr = NULL; |
18262 | struct attribute *attr2 = NULL; | |
e142c38c | 18263 | CORE_ADDR baseaddr; |
e37fd15a SW |
18264 | struct pending **list_to_add = NULL; |
18265 | ||
edb3359d | 18266 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
18267 | |
18268 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 18269 | |
94af9270 | 18270 | name = dwarf2_name (die, cu); |
c906108c SS |
18271 | if (name) |
18272 | { | |
94af9270 | 18273 | const char *linkagename; |
34eaf542 | 18274 | int suppress_add = 0; |
94af9270 | 18275 | |
34eaf542 TT |
18276 | if (space) |
18277 | sym = space; | |
18278 | else | |
e623cf5d | 18279 | sym = allocate_symbol (objfile); |
c906108c | 18280 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
18281 | |
18282 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 18283 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
18284 | linkagename = dwarf2_physname (name, die, cu); |
18285 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 18286 | |
f55ee35c JK |
18287 | /* Fortran does not have mangling standard and the mangling does differ |
18288 | between gfortran, iFort etc. */ | |
18289 | if (cu->language == language_fortran | |
b250c185 | 18290 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 18291 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 18292 | dwarf2_full_name (name, die, cu), |
29df156d | 18293 | NULL); |
f55ee35c | 18294 | |
c906108c | 18295 | /* Default assumptions. |
c5aa993b | 18296 | Use the passed type or decode it from the die. */ |
176620f1 | 18297 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 18298 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
18299 | if (type != NULL) |
18300 | SYMBOL_TYPE (sym) = type; | |
18301 | else | |
e7c27a73 | 18302 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
18303 | attr = dwarf2_attr (die, |
18304 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
18305 | cu); | |
c906108c SS |
18306 | if (attr) |
18307 | { | |
18308 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
18309 | } | |
cb1df416 | 18310 | |
edb3359d DJ |
18311 | attr = dwarf2_attr (die, |
18312 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
18313 | cu); | |
cb1df416 DJ |
18314 | if (attr) |
18315 | { | |
18316 | int file_index = DW_UNSND (attr); | |
9a619af0 | 18317 | |
cb1df416 DJ |
18318 | if (cu->line_header == NULL |
18319 | || file_index > cu->line_header->num_file_names) | |
18320 | complaint (&symfile_complaints, | |
18321 | _("file index out of range")); | |
1c3d648d | 18322 | else if (file_index > 0) |
cb1df416 DJ |
18323 | { |
18324 | struct file_entry *fe; | |
9a619af0 | 18325 | |
cb1df416 | 18326 | fe = &cu->line_header->file_names[file_index - 1]; |
08be3fe3 | 18327 | symbol_set_symtab (sym, fe->symtab); |
cb1df416 DJ |
18328 | } |
18329 | } | |
18330 | ||
c906108c SS |
18331 | switch (die->tag) |
18332 | { | |
18333 | case DW_TAG_label: | |
e142c38c | 18334 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 18335 | if (attr) |
3e29f34a MR |
18336 | { |
18337 | CORE_ADDR addr; | |
18338 | ||
18339 | addr = attr_value_as_address (attr); | |
18340 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
18341 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
18342 | } | |
0f5238ed TT |
18343 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
18344 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 18345 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 18346 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
18347 | break; |
18348 | case DW_TAG_subprogram: | |
18349 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18350 | finish_block. */ | |
f1e6e072 | 18351 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 18352 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
18353 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
18354 | || cu->language == language_ada) | |
c906108c | 18355 | { |
2cfa0c8d JB |
18356 | /* Subprograms marked external are stored as a global symbol. |
18357 | Ada subprograms, whether marked external or not, are always | |
18358 | stored as a global symbol, because we want to be able to | |
18359 | access them globally. For instance, we want to be able | |
18360 | to break on a nested subprogram without having to | |
18361 | specify the context. */ | |
e37fd15a | 18362 | list_to_add = &global_symbols; |
c906108c SS |
18363 | } |
18364 | else | |
18365 | { | |
e37fd15a | 18366 | list_to_add = cu->list_in_scope; |
c906108c SS |
18367 | } |
18368 | break; | |
edb3359d DJ |
18369 | case DW_TAG_inlined_subroutine: |
18370 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18371 | finish_block. */ | |
f1e6e072 | 18372 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 18373 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 18374 | list_to_add = cu->list_in_scope; |
edb3359d | 18375 | break; |
34eaf542 TT |
18376 | case DW_TAG_template_value_param: |
18377 | suppress_add = 1; | |
18378 | /* Fall through. */ | |
72929c62 | 18379 | case DW_TAG_constant: |
c906108c | 18380 | case DW_TAG_variable: |
254e6b9e | 18381 | case DW_TAG_member: |
0963b4bd MS |
18382 | /* Compilation with minimal debug info may result in |
18383 | variables with missing type entries. Change the | |
18384 | misleading `void' type to something sensible. */ | |
c906108c | 18385 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 18386 | SYMBOL_TYPE (sym) |
46bf5051 | 18387 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 18388 | |
e142c38c | 18389 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
18390 | /* In the case of DW_TAG_member, we should only be called for |
18391 | static const members. */ | |
18392 | if (die->tag == DW_TAG_member) | |
18393 | { | |
3863f96c DE |
18394 | /* dwarf2_add_field uses die_is_declaration, |
18395 | so we do the same. */ | |
254e6b9e DE |
18396 | gdb_assert (die_is_declaration (die, cu)); |
18397 | gdb_assert (attr); | |
18398 | } | |
c906108c SS |
18399 | if (attr) |
18400 | { | |
e7c27a73 | 18401 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 18402 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 18403 | if (!suppress_add) |
34eaf542 TT |
18404 | { |
18405 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 18406 | list_to_add = &global_symbols; |
34eaf542 | 18407 | else |
e37fd15a | 18408 | list_to_add = cu->list_in_scope; |
34eaf542 | 18409 | } |
c906108c SS |
18410 | break; |
18411 | } | |
e142c38c | 18412 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
18413 | if (attr) |
18414 | { | |
e7c27a73 | 18415 | var_decode_location (attr, sym, cu); |
e142c38c | 18416 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
18417 | |
18418 | /* Fortran explicitly imports any global symbols to the local | |
18419 | scope by DW_TAG_common_block. */ | |
18420 | if (cu->language == language_fortran && die->parent | |
18421 | && die->parent->tag == DW_TAG_common_block) | |
18422 | attr2 = NULL; | |
18423 | ||
caac4577 JG |
18424 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
18425 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
18426 | && !dwarf2_per_objfile->has_section_at_zero) | |
18427 | { | |
18428 | /* When a static variable is eliminated by the linker, | |
18429 | the corresponding debug information is not stripped | |
18430 | out, but the variable address is set to null; | |
18431 | do not add such variables into symbol table. */ | |
18432 | } | |
18433 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 18434 | { |
f55ee35c JK |
18435 | /* Workaround gfortran PR debug/40040 - it uses |
18436 | DW_AT_location for variables in -fPIC libraries which may | |
18437 | get overriden by other libraries/executable and get | |
18438 | a different address. Resolve it by the minimal symbol | |
18439 | which may come from inferior's executable using copy | |
18440 | relocation. Make this workaround only for gfortran as for | |
18441 | other compilers GDB cannot guess the minimal symbol | |
18442 | Fortran mangling kind. */ | |
18443 | if (cu->language == language_fortran && die->parent | |
18444 | && die->parent->tag == DW_TAG_module | |
18445 | && cu->producer | |
61012eef | 18446 | && startswith (cu->producer, "GNU Fortran ")) |
f1e6e072 | 18447 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 18448 | |
1c809c68 TT |
18449 | /* A variable with DW_AT_external is never static, |
18450 | but it may be block-scoped. */ | |
18451 | list_to_add = (cu->list_in_scope == &file_symbols | |
18452 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 18453 | } |
c906108c | 18454 | else |
e37fd15a | 18455 | list_to_add = cu->list_in_scope; |
c906108c SS |
18456 | } |
18457 | else | |
18458 | { | |
18459 | /* We do not know the address of this symbol. | |
c5aa993b JM |
18460 | If it is an external symbol and we have type information |
18461 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
18462 | The address of the variable will then be determined from | |
18463 | the minimal symbol table whenever the variable is | |
18464 | referenced. */ | |
e142c38c | 18465 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
18466 | |
18467 | /* Fortran explicitly imports any global symbols to the local | |
18468 | scope by DW_TAG_common_block. */ | |
18469 | if (cu->language == language_fortran && die->parent | |
18470 | && die->parent->tag == DW_TAG_common_block) | |
18471 | { | |
18472 | /* SYMBOL_CLASS doesn't matter here because | |
18473 | read_common_block is going to reset it. */ | |
18474 | if (!suppress_add) | |
18475 | list_to_add = cu->list_in_scope; | |
18476 | } | |
18477 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
18478 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 18479 | { |
0fe7935b DJ |
18480 | /* A variable with DW_AT_external is never static, but it |
18481 | may be block-scoped. */ | |
18482 | list_to_add = (cu->list_in_scope == &file_symbols | |
18483 | ? &global_symbols : cu->list_in_scope); | |
18484 | ||
f1e6e072 | 18485 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 18486 | } |
442ddf59 JK |
18487 | else if (!die_is_declaration (die, cu)) |
18488 | { | |
18489 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
18490 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
18491 | if (!suppress_add) |
18492 | list_to_add = cu->list_in_scope; | |
442ddf59 | 18493 | } |
c906108c SS |
18494 | } |
18495 | break; | |
18496 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
18497 | /* If we are inside a function, mark this as an argument. If |
18498 | not, we might be looking at an argument to an inlined function | |
18499 | when we do not have enough information to show inlined frames; | |
18500 | pretend it's a local variable in that case so that the user can | |
18501 | still see it. */ | |
18502 | if (context_stack_depth > 0 | |
18503 | && context_stack[context_stack_depth - 1].name != NULL) | |
18504 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 18505 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
18506 | if (attr) |
18507 | { | |
e7c27a73 | 18508 | var_decode_location (attr, sym, cu); |
c906108c | 18509 | } |
e142c38c | 18510 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
18511 | if (attr) |
18512 | { | |
e7c27a73 | 18513 | dwarf2_const_value (attr, sym, cu); |
c906108c | 18514 | } |
f346a30d | 18515 | |
e37fd15a | 18516 | list_to_add = cu->list_in_scope; |
c906108c SS |
18517 | break; |
18518 | case DW_TAG_unspecified_parameters: | |
18519 | /* From varargs functions; gdb doesn't seem to have any | |
18520 | interest in this information, so just ignore it for now. | |
18521 | (FIXME?) */ | |
18522 | break; | |
34eaf542 TT |
18523 | case DW_TAG_template_type_param: |
18524 | suppress_add = 1; | |
18525 | /* Fall through. */ | |
c906108c | 18526 | case DW_TAG_class_type: |
680b30c7 | 18527 | case DW_TAG_interface_type: |
c906108c SS |
18528 | case DW_TAG_structure_type: |
18529 | case DW_TAG_union_type: | |
72019c9c | 18530 | case DW_TAG_set_type: |
c906108c | 18531 | case DW_TAG_enumeration_type: |
f1e6e072 | 18532 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 18533 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 18534 | |
63d06c5c | 18535 | { |
987504bb | 18536 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
18537 | really ever be static objects: otherwise, if you try |
18538 | to, say, break of a class's method and you're in a file | |
18539 | which doesn't mention that class, it won't work unless | |
18540 | the check for all static symbols in lookup_symbol_aux | |
18541 | saves you. See the OtherFileClass tests in | |
18542 | gdb.c++/namespace.exp. */ | |
18543 | ||
e37fd15a | 18544 | if (!suppress_add) |
34eaf542 | 18545 | { |
34eaf542 TT |
18546 | list_to_add = (cu->list_in_scope == &file_symbols |
18547 | && (cu->language == language_cplus | |
18548 | || cu->language == language_java) | |
18549 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 18550 | |
64382290 TT |
18551 | /* The semantics of C++ state that "struct foo { |
18552 | ... }" also defines a typedef for "foo". A Java | |
18553 | class declaration also defines a typedef for the | |
18554 | class. */ | |
18555 | if (cu->language == language_cplus | |
18556 | || cu->language == language_java | |
18557 | || cu->language == language_ada) | |
18558 | { | |
18559 | /* The symbol's name is already allocated along | |
18560 | with this objfile, so we don't need to | |
18561 | duplicate it for the type. */ | |
18562 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
18563 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
18564 | } | |
63d06c5c DC |
18565 | } |
18566 | } | |
c906108c SS |
18567 | break; |
18568 | case DW_TAG_typedef: | |
f1e6e072 | 18569 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 18570 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 18571 | list_to_add = cu->list_in_scope; |
63d06c5c | 18572 | break; |
c906108c | 18573 | case DW_TAG_base_type: |
a02abb62 | 18574 | case DW_TAG_subrange_type: |
f1e6e072 | 18575 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 18576 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 18577 | list_to_add = cu->list_in_scope; |
c906108c SS |
18578 | break; |
18579 | case DW_TAG_enumerator: | |
e142c38c | 18580 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
18581 | if (attr) |
18582 | { | |
e7c27a73 | 18583 | dwarf2_const_value (attr, sym, cu); |
c906108c | 18584 | } |
63d06c5c DC |
18585 | { |
18586 | /* NOTE: carlton/2003-11-10: See comment above in the | |
18587 | DW_TAG_class_type, etc. block. */ | |
18588 | ||
e142c38c | 18589 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
18590 | && (cu->language == language_cplus |
18591 | || cu->language == language_java) | |
e142c38c | 18592 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 18593 | } |
c906108c | 18594 | break; |
74921315 | 18595 | case DW_TAG_imported_declaration: |
5c4e30ca | 18596 | case DW_TAG_namespace: |
f1e6e072 | 18597 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 18598 | list_to_add = &global_symbols; |
5c4e30ca | 18599 | break; |
530e8392 KB |
18600 | case DW_TAG_module: |
18601 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
18602 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
18603 | list_to_add = &global_symbols; | |
18604 | break; | |
4357ac6c | 18605 | case DW_TAG_common_block: |
f1e6e072 | 18606 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
18607 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
18608 | add_symbol_to_list (sym, cu->list_in_scope); | |
18609 | break; | |
c906108c SS |
18610 | default: |
18611 | /* Not a tag we recognize. Hopefully we aren't processing | |
18612 | trash data, but since we must specifically ignore things | |
18613 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 18614 | this point. */ |
e2e0b3e5 | 18615 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 18616 | dwarf_tag_name (die->tag)); |
c906108c SS |
18617 | break; |
18618 | } | |
df8a16a1 | 18619 | |
e37fd15a SW |
18620 | if (suppress_add) |
18621 | { | |
18622 | sym->hash_next = objfile->template_symbols; | |
18623 | objfile->template_symbols = sym; | |
18624 | list_to_add = NULL; | |
18625 | } | |
18626 | ||
18627 | if (list_to_add != NULL) | |
18628 | add_symbol_to_list (sym, list_to_add); | |
18629 | ||
df8a16a1 DJ |
18630 | /* For the benefit of old versions of GCC, check for anonymous |
18631 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 18632 | if (!cu->processing_has_namespace_info |
94af9270 | 18633 | && cu->language == language_cplus) |
a10964d1 | 18634 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
18635 | } |
18636 | return (sym); | |
18637 | } | |
18638 | ||
34eaf542 TT |
18639 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
18640 | ||
18641 | static struct symbol * | |
18642 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
18643 | { | |
18644 | return new_symbol_full (die, type, cu, NULL); | |
18645 | } | |
18646 | ||
98bfdba5 PA |
18647 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
18648 | zero-extend it as appropriate for the symbol's type. The DWARF | |
18649 | standard (v4) is not entirely clear about the meaning of using | |
18650 | DW_FORM_dataN for a constant with a signed type, where the type is | |
18651 | wider than the data. The conclusion of a discussion on the DWARF | |
18652 | list was that this is unspecified. We choose to always zero-extend | |
18653 | because that is the interpretation long in use by GCC. */ | |
c906108c | 18654 | |
98bfdba5 | 18655 | static gdb_byte * |
ff39bb5e | 18656 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 18657 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 18658 | { |
e7c27a73 | 18659 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
18660 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
18661 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
18662 | LONGEST l = DW_UNSND (attr); |
18663 | ||
18664 | if (bits < sizeof (*value) * 8) | |
18665 | { | |
18666 | l &= ((LONGEST) 1 << bits) - 1; | |
18667 | *value = l; | |
18668 | } | |
18669 | else if (bits == sizeof (*value) * 8) | |
18670 | *value = l; | |
18671 | else | |
18672 | { | |
18673 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
18674 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
18675 | return bytes; | |
18676 | } | |
18677 | ||
18678 | return NULL; | |
18679 | } | |
18680 | ||
18681 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
18682 | the value does not fit in *VALUE, set *BYTES - either already | |
18683 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
18684 | or, set *BATON, if we translated the constant to a location | |
18685 | expression. */ | |
18686 | ||
18687 | static void | |
ff39bb5e | 18688 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
18689 | const char *name, struct obstack *obstack, |
18690 | struct dwarf2_cu *cu, | |
d521ce57 | 18691 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
18692 | struct dwarf2_locexpr_baton **baton) |
18693 | { | |
18694 | struct objfile *objfile = cu->objfile; | |
18695 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 18696 | struct dwarf_block *blk; |
98bfdba5 PA |
18697 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
18698 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
18699 | ||
18700 | *value = 0; | |
18701 | *bytes = NULL; | |
18702 | *baton = NULL; | |
c906108c SS |
18703 | |
18704 | switch (attr->form) | |
18705 | { | |
18706 | case DW_FORM_addr: | |
3019eac3 | 18707 | case DW_FORM_GNU_addr_index: |
ac56253d | 18708 | { |
ac56253d TT |
18709 | gdb_byte *data; |
18710 | ||
98bfdba5 PA |
18711 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
18712 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 18713 | cu_header->addr_size, |
98bfdba5 | 18714 | TYPE_LENGTH (type)); |
ac56253d TT |
18715 | /* Symbols of this form are reasonably rare, so we just |
18716 | piggyback on the existing location code rather than writing | |
18717 | a new implementation of symbol_computed_ops. */ | |
7919a973 | 18718 | *baton = obstack_alloc (obstack, sizeof (struct dwarf2_locexpr_baton)); |
98bfdba5 PA |
18719 | (*baton)->per_cu = cu->per_cu; |
18720 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 18721 | |
98bfdba5 | 18722 | (*baton)->size = 2 + cu_header->addr_size; |
7919a973 | 18723 | data = obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 18724 | (*baton)->data = data; |
ac56253d TT |
18725 | |
18726 | data[0] = DW_OP_addr; | |
18727 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
18728 | byte_order, DW_ADDR (attr)); | |
18729 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 18730 | } |
c906108c | 18731 | break; |
4ac36638 | 18732 | case DW_FORM_string: |
93b5768b | 18733 | case DW_FORM_strp: |
3019eac3 | 18734 | case DW_FORM_GNU_str_index: |
36586728 | 18735 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
18736 | /* DW_STRING is already allocated on the objfile obstack, point |
18737 | directly to it. */ | |
d521ce57 | 18738 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 18739 | break; |
c906108c SS |
18740 | case DW_FORM_block1: |
18741 | case DW_FORM_block2: | |
18742 | case DW_FORM_block4: | |
18743 | case DW_FORM_block: | |
2dc7f7b3 | 18744 | case DW_FORM_exprloc: |
c906108c | 18745 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
18746 | if (TYPE_LENGTH (type) != blk->size) |
18747 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
18748 | TYPE_LENGTH (type)); | |
18749 | *bytes = blk->data; | |
c906108c | 18750 | break; |
2df3850c JM |
18751 | |
18752 | /* The DW_AT_const_value attributes are supposed to carry the | |
18753 | symbol's value "represented as it would be on the target | |
18754 | architecture." By the time we get here, it's already been | |
18755 | converted to host endianness, so we just need to sign- or | |
18756 | zero-extend it as appropriate. */ | |
18757 | case DW_FORM_data1: | |
3aef2284 | 18758 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 18759 | break; |
c906108c | 18760 | case DW_FORM_data2: |
3aef2284 | 18761 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 18762 | break; |
c906108c | 18763 | case DW_FORM_data4: |
3aef2284 | 18764 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 18765 | break; |
c906108c | 18766 | case DW_FORM_data8: |
3aef2284 | 18767 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
18768 | break; |
18769 | ||
c906108c | 18770 | case DW_FORM_sdata: |
98bfdba5 | 18771 | *value = DW_SND (attr); |
2df3850c JM |
18772 | break; |
18773 | ||
c906108c | 18774 | case DW_FORM_udata: |
98bfdba5 | 18775 | *value = DW_UNSND (attr); |
c906108c | 18776 | break; |
2df3850c | 18777 | |
c906108c | 18778 | default: |
4d3c2250 | 18779 | complaint (&symfile_complaints, |
e2e0b3e5 | 18780 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 18781 | dwarf_form_name (attr->form)); |
98bfdba5 | 18782 | *value = 0; |
c906108c SS |
18783 | break; |
18784 | } | |
18785 | } | |
18786 | ||
2df3850c | 18787 | |
98bfdba5 PA |
18788 | /* Copy constant value from an attribute to a symbol. */ |
18789 | ||
2df3850c | 18790 | static void |
ff39bb5e | 18791 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 18792 | struct dwarf2_cu *cu) |
2df3850c | 18793 | { |
98bfdba5 PA |
18794 | struct objfile *objfile = cu->objfile; |
18795 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 18796 | LONGEST value; |
d521ce57 | 18797 | const gdb_byte *bytes; |
98bfdba5 | 18798 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 18799 | |
98bfdba5 PA |
18800 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
18801 | SYMBOL_PRINT_NAME (sym), | |
18802 | &objfile->objfile_obstack, cu, | |
18803 | &value, &bytes, &baton); | |
2df3850c | 18804 | |
98bfdba5 PA |
18805 | if (baton != NULL) |
18806 | { | |
98bfdba5 | 18807 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 18808 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
18809 | } |
18810 | else if (bytes != NULL) | |
18811 | { | |
18812 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 18813 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
18814 | } |
18815 | else | |
18816 | { | |
18817 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 18818 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 18819 | } |
2df3850c JM |
18820 | } |
18821 | ||
c906108c SS |
18822 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
18823 | ||
18824 | static struct type * | |
e7c27a73 | 18825 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18826 | { |
c906108c | 18827 | struct attribute *type_attr; |
c906108c | 18828 | |
e142c38c | 18829 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
18830 | if (!type_attr) |
18831 | { | |
18832 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 18833 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 18834 | } |
348e048f | 18835 | |
673bfd45 | 18836 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
18837 | } |
18838 | ||
b4ba55a1 JB |
18839 | /* True iff CU's producer generates GNAT Ada auxiliary information |
18840 | that allows to find parallel types through that information instead | |
18841 | of having to do expensive parallel lookups by type name. */ | |
18842 | ||
18843 | static int | |
18844 | need_gnat_info (struct dwarf2_cu *cu) | |
18845 | { | |
18846 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
18847 | of GNAT produces this auxiliary information, without any indication | |
18848 | that it is produced. Part of enhancing the FSF version of GNAT | |
18849 | to produce that information will be to put in place an indicator | |
18850 | that we can use in order to determine whether the descriptive type | |
18851 | info is available or not. One suggestion that has been made is | |
18852 | to use a new attribute, attached to the CU die. For now, assume | |
18853 | that the descriptive type info is not available. */ | |
18854 | return 0; | |
18855 | } | |
18856 | ||
b4ba55a1 JB |
18857 | /* Return the auxiliary type of the die in question using its |
18858 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
18859 | attribute is not present. */ | |
18860 | ||
18861 | static struct type * | |
18862 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
18863 | { | |
b4ba55a1 | 18864 | struct attribute *type_attr; |
b4ba55a1 JB |
18865 | |
18866 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
18867 | if (!type_attr) | |
18868 | return NULL; | |
18869 | ||
673bfd45 | 18870 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
18871 | } |
18872 | ||
18873 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
18874 | descriptive type accordingly. */ | |
18875 | ||
18876 | static void | |
18877 | set_descriptive_type (struct type *type, struct die_info *die, | |
18878 | struct dwarf2_cu *cu) | |
18879 | { | |
18880 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
18881 | ||
18882 | if (descriptive_type) | |
18883 | { | |
18884 | ALLOCATE_GNAT_AUX_TYPE (type); | |
18885 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
18886 | } | |
18887 | } | |
18888 | ||
c906108c SS |
18889 | /* Return the containing type of the die in question using its |
18890 | DW_AT_containing_type attribute. */ | |
18891 | ||
18892 | static struct type * | |
e7c27a73 | 18893 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18894 | { |
c906108c | 18895 | struct attribute *type_attr; |
c906108c | 18896 | |
e142c38c | 18897 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
18898 | if (!type_attr) |
18899 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 18900 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 18901 | |
673bfd45 | 18902 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
18903 | } |
18904 | ||
ac9ec31b DE |
18905 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
18906 | ||
18907 | static struct type * | |
18908 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
18909 | { | |
18910 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18911 | char *message, *saved; | |
18912 | ||
18913 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 18914 | objfile_name (objfile), |
ac9ec31b DE |
18915 | cu->header.offset.sect_off, |
18916 | die->offset.sect_off); | |
18917 | saved = obstack_copy0 (&objfile->objfile_obstack, | |
18918 | message, strlen (message)); | |
18919 | xfree (message); | |
18920 | ||
18921 | return init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); | |
18922 | } | |
18923 | ||
673bfd45 | 18924 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
18925 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
18926 | DW_AT_containing_type. | |
673bfd45 DE |
18927 | If there is no type substitute an error marker. */ |
18928 | ||
c906108c | 18929 | static struct type * |
ff39bb5e | 18930 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 18931 | struct dwarf2_cu *cu) |
c906108c | 18932 | { |
bb5ed363 | 18933 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
18934 | struct type *this_type; |
18935 | ||
ac9ec31b DE |
18936 | gdb_assert (attr->name == DW_AT_type |
18937 | || attr->name == DW_AT_GNAT_descriptive_type | |
18938 | || attr->name == DW_AT_containing_type); | |
18939 | ||
673bfd45 DE |
18940 | /* First see if we have it cached. */ |
18941 | ||
36586728 TT |
18942 | if (attr->form == DW_FORM_GNU_ref_alt) |
18943 | { | |
18944 | struct dwarf2_per_cu_data *per_cu; | |
18945 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
18946 | ||
18947 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
18948 | this_type = get_die_type_at_offset (offset, per_cu); | |
18949 | } | |
7771576e | 18950 | else if (attr_form_is_ref (attr)) |
673bfd45 | 18951 | { |
b64f50a1 | 18952 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
18953 | |
18954 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
18955 | } | |
55f1336d | 18956 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 18957 | { |
ac9ec31b | 18958 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 18959 | |
ac9ec31b | 18960 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
18961 | } |
18962 | else | |
18963 | { | |
ac9ec31b DE |
18964 | complaint (&symfile_complaints, |
18965 | _("Dwarf Error: Bad type attribute %s in DIE" | |
18966 | " at 0x%x [in module %s]"), | |
18967 | dwarf_attr_name (attr->name), die->offset.sect_off, | |
4262abfb | 18968 | objfile_name (objfile)); |
ac9ec31b | 18969 | return build_error_marker_type (cu, die); |
673bfd45 DE |
18970 | } |
18971 | ||
18972 | /* If not cached we need to read it in. */ | |
18973 | ||
18974 | if (this_type == NULL) | |
18975 | { | |
ac9ec31b | 18976 | struct die_info *type_die = NULL; |
673bfd45 DE |
18977 | struct dwarf2_cu *type_cu = cu; |
18978 | ||
7771576e | 18979 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
18980 | type_die = follow_die_ref (die, attr, &type_cu); |
18981 | if (type_die == NULL) | |
18982 | return build_error_marker_type (cu, die); | |
18983 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
18984 | from an inter-CU reference and the type's CU got expanded before |
18985 | ours. */ | |
ac9ec31b | 18986 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
18987 | } |
18988 | ||
18989 | /* If we still don't have a type use an error marker. */ | |
18990 | ||
18991 | if (this_type == NULL) | |
ac9ec31b | 18992 | return build_error_marker_type (cu, die); |
673bfd45 | 18993 | |
f792889a | 18994 | return this_type; |
c906108c SS |
18995 | } |
18996 | ||
673bfd45 DE |
18997 | /* Return the type in DIE, CU. |
18998 | Returns NULL for invalid types. | |
18999 | ||
02142a6c | 19000 | This first does a lookup in die_type_hash, |
673bfd45 DE |
19001 | and only reads the die in if necessary. |
19002 | ||
19003 | NOTE: This can be called when reading in partial or full symbols. */ | |
19004 | ||
f792889a | 19005 | static struct type * |
e7c27a73 | 19006 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19007 | { |
f792889a DJ |
19008 | struct type *this_type; |
19009 | ||
19010 | this_type = get_die_type (die, cu); | |
19011 | if (this_type) | |
19012 | return this_type; | |
19013 | ||
673bfd45 DE |
19014 | return read_type_die_1 (die, cu); |
19015 | } | |
19016 | ||
19017 | /* Read the type in DIE, CU. | |
19018 | Returns NULL for invalid types. */ | |
19019 | ||
19020 | static struct type * | |
19021 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
19022 | { | |
19023 | struct type *this_type = NULL; | |
19024 | ||
c906108c SS |
19025 | switch (die->tag) |
19026 | { | |
19027 | case DW_TAG_class_type: | |
680b30c7 | 19028 | case DW_TAG_interface_type: |
c906108c SS |
19029 | case DW_TAG_structure_type: |
19030 | case DW_TAG_union_type: | |
f792889a | 19031 | this_type = read_structure_type (die, cu); |
c906108c SS |
19032 | break; |
19033 | case DW_TAG_enumeration_type: | |
f792889a | 19034 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
19035 | break; |
19036 | case DW_TAG_subprogram: | |
19037 | case DW_TAG_subroutine_type: | |
edb3359d | 19038 | case DW_TAG_inlined_subroutine: |
f792889a | 19039 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
19040 | break; |
19041 | case DW_TAG_array_type: | |
f792889a | 19042 | this_type = read_array_type (die, cu); |
c906108c | 19043 | break; |
72019c9c | 19044 | case DW_TAG_set_type: |
f792889a | 19045 | this_type = read_set_type (die, cu); |
72019c9c | 19046 | break; |
c906108c | 19047 | case DW_TAG_pointer_type: |
f792889a | 19048 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
19049 | break; |
19050 | case DW_TAG_ptr_to_member_type: | |
f792889a | 19051 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
19052 | break; |
19053 | case DW_TAG_reference_type: | |
f792889a | 19054 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
19055 | break; |
19056 | case DW_TAG_const_type: | |
f792889a | 19057 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
19058 | break; |
19059 | case DW_TAG_volatile_type: | |
f792889a | 19060 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 19061 | break; |
06d66ee9 TT |
19062 | case DW_TAG_restrict_type: |
19063 | this_type = read_tag_restrict_type (die, cu); | |
19064 | break; | |
c906108c | 19065 | case DW_TAG_string_type: |
f792889a | 19066 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
19067 | break; |
19068 | case DW_TAG_typedef: | |
f792889a | 19069 | this_type = read_typedef (die, cu); |
c906108c | 19070 | break; |
a02abb62 | 19071 | case DW_TAG_subrange_type: |
f792889a | 19072 | this_type = read_subrange_type (die, cu); |
a02abb62 | 19073 | break; |
c906108c | 19074 | case DW_TAG_base_type: |
f792889a | 19075 | this_type = read_base_type (die, cu); |
c906108c | 19076 | break; |
81a17f79 | 19077 | case DW_TAG_unspecified_type: |
f792889a | 19078 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 19079 | break; |
0114d602 DJ |
19080 | case DW_TAG_namespace: |
19081 | this_type = read_namespace_type (die, cu); | |
19082 | break; | |
f55ee35c JK |
19083 | case DW_TAG_module: |
19084 | this_type = read_module_type (die, cu); | |
19085 | break; | |
a2c2acaf MW |
19086 | case DW_TAG_atomic_type: |
19087 | this_type = read_tag_atomic_type (die, cu); | |
19088 | break; | |
c906108c | 19089 | default: |
3e43a32a MS |
19090 | complaint (&symfile_complaints, |
19091 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 19092 | dwarf_tag_name (die->tag)); |
c906108c SS |
19093 | break; |
19094 | } | |
63d06c5c | 19095 | |
f792889a | 19096 | return this_type; |
63d06c5c DC |
19097 | } |
19098 | ||
abc72ce4 DE |
19099 | /* See if we can figure out if the class lives in a namespace. We do |
19100 | this by looking for a member function; its demangled name will | |
19101 | contain namespace info, if there is any. | |
19102 | Return the computed name or NULL. | |
19103 | Space for the result is allocated on the objfile's obstack. | |
19104 | This is the full-die version of guess_partial_die_structure_name. | |
19105 | In this case we know DIE has no useful parent. */ | |
19106 | ||
19107 | static char * | |
19108 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
19109 | { | |
19110 | struct die_info *spec_die; | |
19111 | struct dwarf2_cu *spec_cu; | |
19112 | struct die_info *child; | |
19113 | ||
19114 | spec_cu = cu; | |
19115 | spec_die = die_specification (die, &spec_cu); | |
19116 | if (spec_die != NULL) | |
19117 | { | |
19118 | die = spec_die; | |
19119 | cu = spec_cu; | |
19120 | } | |
19121 | ||
19122 | for (child = die->child; | |
19123 | child != NULL; | |
19124 | child = child->sibling) | |
19125 | { | |
19126 | if (child->tag == DW_TAG_subprogram) | |
19127 | { | |
19128 | struct attribute *attr; | |
19129 | ||
19130 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
19131 | if (attr == NULL) | |
19132 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
19133 | if (attr != NULL) | |
19134 | { | |
19135 | char *actual_name | |
19136 | = language_class_name_from_physname (cu->language_defn, | |
19137 | DW_STRING (attr)); | |
19138 | char *name = NULL; | |
19139 | ||
19140 | if (actual_name != NULL) | |
19141 | { | |
15d034d0 | 19142 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
19143 | |
19144 | if (die_name != NULL | |
19145 | && strcmp (die_name, actual_name) != 0) | |
19146 | { | |
19147 | /* Strip off the class name from the full name. | |
19148 | We want the prefix. */ | |
19149 | int die_name_len = strlen (die_name); | |
19150 | int actual_name_len = strlen (actual_name); | |
19151 | ||
19152 | /* Test for '::' as a sanity check. */ | |
19153 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
19154 | && actual_name[actual_name_len |
19155 | - die_name_len - 1] == ':') | |
abc72ce4 | 19156 | name = |
34a68019 | 19157 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb TT |
19158 | actual_name, |
19159 | actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
19160 | } |
19161 | } | |
19162 | xfree (actual_name); | |
19163 | return name; | |
19164 | } | |
19165 | } | |
19166 | } | |
19167 | ||
19168 | return NULL; | |
19169 | } | |
19170 | ||
96408a79 SA |
19171 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
19172 | prefix part in such case. See | |
19173 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
19174 | ||
19175 | static char * | |
19176 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
19177 | { | |
19178 | struct attribute *attr; | |
19179 | char *base; | |
19180 | ||
19181 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
19182 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
19183 | return NULL; | |
19184 | ||
19185 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
19186 | if (attr != NULL && DW_STRING (attr) != NULL) | |
19187 | return NULL; | |
19188 | ||
19189 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
19190 | if (attr == NULL) | |
19191 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
19192 | if (attr == NULL || DW_STRING (attr) == NULL) | |
19193 | return NULL; | |
19194 | ||
19195 | /* dwarf2_name had to be already called. */ | |
19196 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
19197 | ||
19198 | /* Strip the base name, keep any leading namespaces/classes. */ | |
19199 | base = strrchr (DW_STRING (attr), ':'); | |
19200 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
19201 | return ""; | |
19202 | ||
34a68019 | 19203 | return obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb | 19204 | DW_STRING (attr), &base[-1] - DW_STRING (attr)); |
96408a79 SA |
19205 | } |
19206 | ||
fdde2d81 | 19207 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 19208 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 19209 | |
0114d602 DJ |
19210 | For example, if we're within the method foo() in the following |
19211 | code: | |
19212 | ||
19213 | namespace N { | |
19214 | class C { | |
19215 | void foo () { | |
19216 | } | |
19217 | }; | |
19218 | } | |
19219 | ||
19220 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 19221 | |
0d5cff50 | 19222 | static const char * |
e142c38c | 19223 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 19224 | { |
0114d602 DJ |
19225 | struct die_info *parent, *spec_die; |
19226 | struct dwarf2_cu *spec_cu; | |
19227 | struct type *parent_type; | |
96408a79 | 19228 | char *retval; |
63d06c5c | 19229 | |
f55ee35c JK |
19230 | if (cu->language != language_cplus && cu->language != language_java |
19231 | && cu->language != language_fortran) | |
0114d602 DJ |
19232 | return ""; |
19233 | ||
96408a79 SA |
19234 | retval = anonymous_struct_prefix (die, cu); |
19235 | if (retval) | |
19236 | return retval; | |
19237 | ||
0114d602 DJ |
19238 | /* We have to be careful in the presence of DW_AT_specification. |
19239 | For example, with GCC 3.4, given the code | |
19240 | ||
19241 | namespace N { | |
19242 | void foo() { | |
19243 | // Definition of N::foo. | |
19244 | } | |
19245 | } | |
19246 | ||
19247 | then we'll have a tree of DIEs like this: | |
19248 | ||
19249 | 1: DW_TAG_compile_unit | |
19250 | 2: DW_TAG_namespace // N | |
19251 | 3: DW_TAG_subprogram // declaration of N::foo | |
19252 | 4: DW_TAG_subprogram // definition of N::foo | |
19253 | DW_AT_specification // refers to die #3 | |
19254 | ||
19255 | Thus, when processing die #4, we have to pretend that we're in | |
19256 | the context of its DW_AT_specification, namely the contex of die | |
19257 | #3. */ | |
19258 | spec_cu = cu; | |
19259 | spec_die = die_specification (die, &spec_cu); | |
19260 | if (spec_die == NULL) | |
19261 | parent = die->parent; | |
19262 | else | |
63d06c5c | 19263 | { |
0114d602 DJ |
19264 | parent = spec_die->parent; |
19265 | cu = spec_cu; | |
63d06c5c | 19266 | } |
0114d602 DJ |
19267 | |
19268 | if (parent == NULL) | |
19269 | return ""; | |
98bfdba5 PA |
19270 | else if (parent->building_fullname) |
19271 | { | |
19272 | const char *name; | |
19273 | const char *parent_name; | |
19274 | ||
19275 | /* It has been seen on RealView 2.2 built binaries, | |
19276 | DW_TAG_template_type_param types actually _defined_ as | |
19277 | children of the parent class: | |
19278 | ||
19279 | enum E {}; | |
19280 | template class <class Enum> Class{}; | |
19281 | Class<enum E> class_e; | |
19282 | ||
19283 | 1: DW_TAG_class_type (Class) | |
19284 | 2: DW_TAG_enumeration_type (E) | |
19285 | 3: DW_TAG_enumerator (enum1:0) | |
19286 | 3: DW_TAG_enumerator (enum2:1) | |
19287 | ... | |
19288 | 2: DW_TAG_template_type_param | |
19289 | DW_AT_type DW_FORM_ref_udata (E) | |
19290 | ||
19291 | Besides being broken debug info, it can put GDB into an | |
19292 | infinite loop. Consider: | |
19293 | ||
19294 | When we're building the full name for Class<E>, we'll start | |
19295 | at Class, and go look over its template type parameters, | |
19296 | finding E. We'll then try to build the full name of E, and | |
19297 | reach here. We're now trying to build the full name of E, | |
19298 | and look over the parent DIE for containing scope. In the | |
19299 | broken case, if we followed the parent DIE of E, we'd again | |
19300 | find Class, and once again go look at its template type | |
19301 | arguments, etc., etc. Simply don't consider such parent die | |
19302 | as source-level parent of this die (it can't be, the language | |
19303 | doesn't allow it), and break the loop here. */ | |
19304 | name = dwarf2_name (die, cu); | |
19305 | parent_name = dwarf2_name (parent, cu); | |
19306 | complaint (&symfile_complaints, | |
19307 | _("template param type '%s' defined within parent '%s'"), | |
19308 | name ? name : "<unknown>", | |
19309 | parent_name ? parent_name : "<unknown>"); | |
19310 | return ""; | |
19311 | } | |
63d06c5c | 19312 | else |
0114d602 DJ |
19313 | switch (parent->tag) |
19314 | { | |
63d06c5c | 19315 | case DW_TAG_namespace: |
0114d602 | 19316 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
19317 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
19318 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
19319 | Work around this problem here. */ | |
19320 | if (cu->language == language_cplus | |
19321 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
19322 | return ""; | |
0114d602 DJ |
19323 | /* We give a name to even anonymous namespaces. */ |
19324 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 19325 | case DW_TAG_class_type: |
680b30c7 | 19326 | case DW_TAG_interface_type: |
63d06c5c | 19327 | case DW_TAG_structure_type: |
0114d602 | 19328 | case DW_TAG_union_type: |
f55ee35c | 19329 | case DW_TAG_module: |
0114d602 DJ |
19330 | parent_type = read_type_die (parent, cu); |
19331 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19332 | return TYPE_TAG_NAME (parent_type); | |
19333 | else | |
19334 | /* An anonymous structure is only allowed non-static data | |
19335 | members; no typedefs, no member functions, et cetera. | |
19336 | So it does not need a prefix. */ | |
19337 | return ""; | |
abc72ce4 | 19338 | case DW_TAG_compile_unit: |
95554aad | 19339 | case DW_TAG_partial_unit: |
abc72ce4 DE |
19340 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
19341 | if (cu->language == language_cplus | |
8b70b953 | 19342 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
19343 | && die->child != NULL |
19344 | && (die->tag == DW_TAG_class_type | |
19345 | || die->tag == DW_TAG_structure_type | |
19346 | || die->tag == DW_TAG_union_type)) | |
19347 | { | |
19348 | char *name = guess_full_die_structure_name (die, cu); | |
19349 | if (name != NULL) | |
19350 | return name; | |
19351 | } | |
19352 | return ""; | |
3d567982 TT |
19353 | case DW_TAG_enumeration_type: |
19354 | parent_type = read_type_die (parent, cu); | |
19355 | if (TYPE_DECLARED_CLASS (parent_type)) | |
19356 | { | |
19357 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19358 | return TYPE_TAG_NAME (parent_type); | |
19359 | return ""; | |
19360 | } | |
19361 | /* Fall through. */ | |
63d06c5c | 19362 | default: |
8176b9b8 | 19363 | return determine_prefix (parent, cu); |
63d06c5c | 19364 | } |
63d06c5c DC |
19365 | } |
19366 | ||
3e43a32a MS |
19367 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
19368 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
19369 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
19370 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
19371 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 19372 | |
f55ee35c | 19373 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
19374 | |
19375 | static char * | |
f55ee35c JK |
19376 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
19377 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 19378 | { |
f55ee35c | 19379 | const char *lead = ""; |
5c315b68 | 19380 | const char *sep; |
63d06c5c | 19381 | |
3e43a32a MS |
19382 | if (suffix == NULL || suffix[0] == '\0' |
19383 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
19384 | sep = ""; |
19385 | else if (cu->language == language_java) | |
19386 | sep = "."; | |
f55ee35c JK |
19387 | else if (cu->language == language_fortran && physname) |
19388 | { | |
19389 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
19390 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
19391 | ||
19392 | lead = "__"; | |
19393 | sep = "_MOD_"; | |
19394 | } | |
987504bb JJ |
19395 | else |
19396 | sep = "::"; | |
63d06c5c | 19397 | |
6dd47d34 DE |
19398 | if (prefix == NULL) |
19399 | prefix = ""; | |
19400 | if (suffix == NULL) | |
19401 | suffix = ""; | |
19402 | ||
987504bb JJ |
19403 | if (obs == NULL) |
19404 | { | |
3e43a32a MS |
19405 | char *retval |
19406 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 19407 | |
f55ee35c JK |
19408 | strcpy (retval, lead); |
19409 | strcat (retval, prefix); | |
6dd47d34 DE |
19410 | strcat (retval, sep); |
19411 | strcat (retval, suffix); | |
63d06c5c DC |
19412 | return retval; |
19413 | } | |
987504bb JJ |
19414 | else |
19415 | { | |
19416 | /* We have an obstack. */ | |
f55ee35c | 19417 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 19418 | } |
63d06c5c DC |
19419 | } |
19420 | ||
c906108c SS |
19421 | /* Return sibling of die, NULL if no sibling. */ |
19422 | ||
f9aca02d | 19423 | static struct die_info * |
fba45db2 | 19424 | sibling_die (struct die_info *die) |
c906108c | 19425 | { |
639d11d3 | 19426 | return die->sibling; |
c906108c SS |
19427 | } |
19428 | ||
71c25dea TT |
19429 | /* Get name of a die, return NULL if not found. */ |
19430 | ||
15d034d0 TT |
19431 | static const char * |
19432 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
19433 | struct obstack *obstack) |
19434 | { | |
19435 | if (name && cu->language == language_cplus) | |
19436 | { | |
19437 | char *canon_name = cp_canonicalize_string (name); | |
19438 | ||
19439 | if (canon_name != NULL) | |
19440 | { | |
19441 | if (strcmp (canon_name, name) != 0) | |
10f0c4bb | 19442 | name = obstack_copy0 (obstack, canon_name, strlen (canon_name)); |
71c25dea TT |
19443 | xfree (canon_name); |
19444 | } | |
19445 | } | |
19446 | ||
19447 | return name; | |
c906108c SS |
19448 | } |
19449 | ||
96553a0c DE |
19450 | /* Get name of a die, return NULL if not found. |
19451 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 19452 | |
15d034d0 | 19453 | static const char * |
e142c38c | 19454 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
19455 | { |
19456 | struct attribute *attr; | |
19457 | ||
e142c38c | 19458 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 19459 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 19460 | && die->tag != DW_TAG_namespace |
53832f31 TT |
19461 | && die->tag != DW_TAG_class_type |
19462 | && die->tag != DW_TAG_interface_type | |
19463 | && die->tag != DW_TAG_structure_type | |
19464 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
19465 | return NULL; |
19466 | ||
19467 | switch (die->tag) | |
19468 | { | |
19469 | case DW_TAG_compile_unit: | |
95554aad | 19470 | case DW_TAG_partial_unit: |
71c25dea TT |
19471 | /* Compilation units have a DW_AT_name that is a filename, not |
19472 | a source language identifier. */ | |
19473 | case DW_TAG_enumeration_type: | |
19474 | case DW_TAG_enumerator: | |
19475 | /* These tags always have simple identifiers already; no need | |
19476 | to canonicalize them. */ | |
19477 | return DW_STRING (attr); | |
907af001 | 19478 | |
96553a0c DE |
19479 | case DW_TAG_namespace: |
19480 | if (attr != NULL && DW_STRING (attr) != NULL) | |
19481 | return DW_STRING (attr); | |
19482 | return CP_ANONYMOUS_NAMESPACE_STR; | |
19483 | ||
418835cc KS |
19484 | case DW_TAG_subprogram: |
19485 | /* Java constructors will all be named "<init>", so return | |
19486 | the class name when we see this special case. */ | |
19487 | if (cu->language == language_java | |
19488 | && DW_STRING (attr) != NULL | |
19489 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
19490 | { | |
19491 | struct dwarf2_cu *spec_cu = cu; | |
19492 | struct die_info *spec_die; | |
19493 | ||
19494 | /* GCJ will output '<init>' for Java constructor names. | |
19495 | For this special case, return the name of the parent class. */ | |
19496 | ||
cdc07690 | 19497 | /* GCJ may output subprogram DIEs with AT_specification set. |
418835cc KS |
19498 | If so, use the name of the specified DIE. */ |
19499 | spec_die = die_specification (die, &spec_cu); | |
19500 | if (spec_die != NULL) | |
19501 | return dwarf2_name (spec_die, spec_cu); | |
19502 | ||
19503 | do | |
19504 | { | |
19505 | die = die->parent; | |
19506 | if (die->tag == DW_TAG_class_type) | |
19507 | return dwarf2_name (die, cu); | |
19508 | } | |
95554aad TT |
19509 | while (die->tag != DW_TAG_compile_unit |
19510 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 19511 | } |
907af001 UW |
19512 | break; |
19513 | ||
19514 | case DW_TAG_class_type: | |
19515 | case DW_TAG_interface_type: | |
19516 | case DW_TAG_structure_type: | |
19517 | case DW_TAG_union_type: | |
19518 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
19519 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
19520 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
19521 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 19522 | if (attr && DW_STRING (attr) |
61012eef GB |
19523 | && (startswith (DW_STRING (attr), "._") |
19524 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 19525 | return NULL; |
53832f31 TT |
19526 | |
19527 | /* GCC might emit a nameless typedef that has a linkage name. See | |
19528 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
19529 | if (!attr || DW_STRING (attr) == NULL) | |
19530 | { | |
df5c6c50 | 19531 | char *demangled = NULL; |
53832f31 TT |
19532 | |
19533 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
19534 | if (attr == NULL) | |
19535 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
19536 | ||
19537 | if (attr == NULL || DW_STRING (attr) == NULL) | |
19538 | return NULL; | |
19539 | ||
df5c6c50 JK |
19540 | /* Avoid demangling DW_STRING (attr) the second time on a second |
19541 | call for the same DIE. */ | |
19542 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 19543 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
19544 | |
19545 | if (demangled) | |
19546 | { | |
96408a79 SA |
19547 | char *base; |
19548 | ||
53832f31 | 19549 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 TT |
19550 | DW_STRING (attr) |
19551 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
19552 | demangled, strlen (demangled)); | |
53832f31 TT |
19553 | DW_STRING_IS_CANONICAL (attr) = 1; |
19554 | xfree (demangled); | |
96408a79 SA |
19555 | |
19556 | /* Strip any leading namespaces/classes, keep only the base name. | |
19557 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
19558 | base = strrchr (DW_STRING (attr), ':'); | |
19559 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
19560 | return &base[1]; | |
19561 | else | |
19562 | return DW_STRING (attr); | |
53832f31 TT |
19563 | } |
19564 | } | |
907af001 UW |
19565 | break; |
19566 | ||
71c25dea | 19567 | default: |
907af001 UW |
19568 | break; |
19569 | } | |
19570 | ||
19571 | if (!DW_STRING_IS_CANONICAL (attr)) | |
19572 | { | |
19573 | DW_STRING (attr) | |
19574 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
34a68019 | 19575 | &cu->objfile->per_bfd->storage_obstack); |
907af001 | 19576 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 19577 | } |
907af001 | 19578 | return DW_STRING (attr); |
9219021c DC |
19579 | } |
19580 | ||
19581 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
19582 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
19583 | containing the return value on output. */ | |
9219021c DC |
19584 | |
19585 | static struct die_info * | |
f2f0e013 | 19586 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
19587 | { |
19588 | struct attribute *attr; | |
9219021c | 19589 | |
f2f0e013 | 19590 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
19591 | if (attr == NULL) |
19592 | return NULL; | |
19593 | ||
f2f0e013 | 19594 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
19595 | } |
19596 | ||
c906108c SS |
19597 | /* Convert a DIE tag into its string name. */ |
19598 | ||
f39c6ffd | 19599 | static const char * |
aa1ee363 | 19600 | dwarf_tag_name (unsigned tag) |
c906108c | 19601 | { |
f39c6ffd TT |
19602 | const char *name = get_DW_TAG_name (tag); |
19603 | ||
19604 | if (name == NULL) | |
19605 | return "DW_TAG_<unknown>"; | |
19606 | ||
19607 | return name; | |
c906108c SS |
19608 | } |
19609 | ||
19610 | /* Convert a DWARF attribute code into its string name. */ | |
19611 | ||
f39c6ffd | 19612 | static const char * |
aa1ee363 | 19613 | dwarf_attr_name (unsigned attr) |
c906108c | 19614 | { |
f39c6ffd TT |
19615 | const char *name; |
19616 | ||
c764a876 | 19617 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
19618 | if (attr == DW_AT_MIPS_fde) |
19619 | return "DW_AT_MIPS_fde"; | |
19620 | #else | |
19621 | if (attr == DW_AT_HP_block_index) | |
19622 | return "DW_AT_HP_block_index"; | |
c764a876 | 19623 | #endif |
f39c6ffd TT |
19624 | |
19625 | name = get_DW_AT_name (attr); | |
19626 | ||
19627 | if (name == NULL) | |
19628 | return "DW_AT_<unknown>"; | |
19629 | ||
19630 | return name; | |
c906108c SS |
19631 | } |
19632 | ||
19633 | /* Convert a DWARF value form code into its string name. */ | |
19634 | ||
f39c6ffd | 19635 | static const char * |
aa1ee363 | 19636 | dwarf_form_name (unsigned form) |
c906108c | 19637 | { |
f39c6ffd TT |
19638 | const char *name = get_DW_FORM_name (form); |
19639 | ||
19640 | if (name == NULL) | |
19641 | return "DW_FORM_<unknown>"; | |
19642 | ||
19643 | return name; | |
c906108c SS |
19644 | } |
19645 | ||
19646 | static char * | |
fba45db2 | 19647 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
19648 | { |
19649 | if (mybool) | |
19650 | return "TRUE"; | |
19651 | else | |
19652 | return "FALSE"; | |
19653 | } | |
19654 | ||
19655 | /* Convert a DWARF type code into its string name. */ | |
19656 | ||
f39c6ffd | 19657 | static const char * |
aa1ee363 | 19658 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 19659 | { |
f39c6ffd | 19660 | const char *name = get_DW_ATE_name (enc); |
c906108c | 19661 | |
f39c6ffd TT |
19662 | if (name == NULL) |
19663 | return "DW_ATE_<unknown>"; | |
c906108c | 19664 | |
f39c6ffd | 19665 | return name; |
c906108c | 19666 | } |
c906108c | 19667 | |
f9aca02d | 19668 | static void |
d97bc12b | 19669 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
19670 | { |
19671 | unsigned int i; | |
19672 | ||
d97bc12b DE |
19673 | print_spaces (indent, f); |
19674 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 19675 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
19676 | |
19677 | if (die->parent != NULL) | |
19678 | { | |
19679 | print_spaces (indent, f); | |
19680 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 19681 | die->parent->offset.sect_off); |
d97bc12b DE |
19682 | } |
19683 | ||
19684 | print_spaces (indent, f); | |
19685 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 19686 | dwarf_bool_name (die->child != NULL)); |
c906108c | 19687 | |
d97bc12b DE |
19688 | print_spaces (indent, f); |
19689 | fprintf_unfiltered (f, " attributes:\n"); | |
19690 | ||
c906108c SS |
19691 | for (i = 0; i < die->num_attrs; ++i) |
19692 | { | |
d97bc12b DE |
19693 | print_spaces (indent, f); |
19694 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
19695 | dwarf_attr_name (die->attrs[i].name), |
19696 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 19697 | |
c906108c SS |
19698 | switch (die->attrs[i].form) |
19699 | { | |
c906108c | 19700 | case DW_FORM_addr: |
3019eac3 | 19701 | case DW_FORM_GNU_addr_index: |
d97bc12b | 19702 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 19703 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
19704 | break; |
19705 | case DW_FORM_block2: | |
19706 | case DW_FORM_block4: | |
19707 | case DW_FORM_block: | |
19708 | case DW_FORM_block1: | |
56eb65bd SP |
19709 | fprintf_unfiltered (f, "block: size %s", |
19710 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 19711 | break; |
2dc7f7b3 | 19712 | case DW_FORM_exprloc: |
56eb65bd SP |
19713 | fprintf_unfiltered (f, "expression: size %s", |
19714 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 19715 | break; |
4568ecf9 DE |
19716 | case DW_FORM_ref_addr: |
19717 | fprintf_unfiltered (f, "ref address: "); | |
19718 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
19719 | break; | |
36586728 TT |
19720 | case DW_FORM_GNU_ref_alt: |
19721 | fprintf_unfiltered (f, "alt ref address: "); | |
19722 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
19723 | break; | |
10b3939b DJ |
19724 | case DW_FORM_ref1: |
19725 | case DW_FORM_ref2: | |
19726 | case DW_FORM_ref4: | |
4568ecf9 DE |
19727 | case DW_FORM_ref8: |
19728 | case DW_FORM_ref_udata: | |
d97bc12b | 19729 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 19730 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 19731 | break; |
c906108c SS |
19732 | case DW_FORM_data1: |
19733 | case DW_FORM_data2: | |
19734 | case DW_FORM_data4: | |
ce5d95e1 | 19735 | case DW_FORM_data8: |
c906108c SS |
19736 | case DW_FORM_udata: |
19737 | case DW_FORM_sdata: | |
43bbcdc2 PH |
19738 | fprintf_unfiltered (f, "constant: %s", |
19739 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 19740 | break; |
2dc7f7b3 TT |
19741 | case DW_FORM_sec_offset: |
19742 | fprintf_unfiltered (f, "section offset: %s", | |
19743 | pulongest (DW_UNSND (&die->attrs[i]))); | |
19744 | break; | |
55f1336d | 19745 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
19746 | fprintf_unfiltered (f, "signature: %s", |
19747 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 19748 | break; |
c906108c | 19749 | case DW_FORM_string: |
4bdf3d34 | 19750 | case DW_FORM_strp: |
3019eac3 | 19751 | case DW_FORM_GNU_str_index: |
36586728 | 19752 | case DW_FORM_GNU_strp_alt: |
8285870a | 19753 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 19754 | DW_STRING (&die->attrs[i]) |
8285870a JK |
19755 | ? DW_STRING (&die->attrs[i]) : "", |
19756 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
19757 | break; |
19758 | case DW_FORM_flag: | |
19759 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 19760 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 19761 | else |
d97bc12b | 19762 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 19763 | break; |
2dc7f7b3 TT |
19764 | case DW_FORM_flag_present: |
19765 | fprintf_unfiltered (f, "flag: TRUE"); | |
19766 | break; | |
a8329558 | 19767 | case DW_FORM_indirect: |
0963b4bd MS |
19768 | /* The reader will have reduced the indirect form to |
19769 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
19770 | fprintf_unfiltered (f, |
19771 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 19772 | break; |
c906108c | 19773 | default: |
d97bc12b | 19774 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 19775 | die->attrs[i].form); |
d97bc12b | 19776 | break; |
c906108c | 19777 | } |
d97bc12b | 19778 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
19779 | } |
19780 | } | |
19781 | ||
f9aca02d | 19782 | static void |
d97bc12b | 19783 | dump_die_for_error (struct die_info *die) |
c906108c | 19784 | { |
d97bc12b DE |
19785 | dump_die_shallow (gdb_stderr, 0, die); |
19786 | } | |
19787 | ||
19788 | static void | |
19789 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
19790 | { | |
19791 | int indent = level * 4; | |
19792 | ||
19793 | gdb_assert (die != NULL); | |
19794 | ||
19795 | if (level >= max_level) | |
19796 | return; | |
19797 | ||
19798 | dump_die_shallow (f, indent, die); | |
19799 | ||
19800 | if (die->child != NULL) | |
c906108c | 19801 | { |
d97bc12b DE |
19802 | print_spaces (indent, f); |
19803 | fprintf_unfiltered (f, " Children:"); | |
19804 | if (level + 1 < max_level) | |
19805 | { | |
19806 | fprintf_unfiltered (f, "\n"); | |
19807 | dump_die_1 (f, level + 1, max_level, die->child); | |
19808 | } | |
19809 | else | |
19810 | { | |
3e43a32a MS |
19811 | fprintf_unfiltered (f, |
19812 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
19813 | } |
19814 | } | |
19815 | ||
19816 | if (die->sibling != NULL && level > 0) | |
19817 | { | |
19818 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
19819 | } |
19820 | } | |
19821 | ||
d97bc12b DE |
19822 | /* This is called from the pdie macro in gdbinit.in. |
19823 | It's not static so gcc will keep a copy callable from gdb. */ | |
19824 | ||
19825 | void | |
19826 | dump_die (struct die_info *die, int max_level) | |
19827 | { | |
19828 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
19829 | } | |
19830 | ||
f9aca02d | 19831 | static void |
51545339 | 19832 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19833 | { |
51545339 | 19834 | void **slot; |
c906108c | 19835 | |
b64f50a1 JK |
19836 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
19837 | INSERT); | |
51545339 DJ |
19838 | |
19839 | *slot = die; | |
c906108c SS |
19840 | } |
19841 | ||
b64f50a1 JK |
19842 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
19843 | required kind. */ | |
19844 | ||
19845 | static sect_offset | |
ff39bb5e | 19846 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 19847 | { |
4568ecf9 | 19848 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 19849 | |
7771576e | 19850 | if (attr_form_is_ref (attr)) |
b64f50a1 | 19851 | return retval; |
93311388 | 19852 | |
b64f50a1 | 19853 | retval.sect_off = 0; |
93311388 DE |
19854 | complaint (&symfile_complaints, |
19855 | _("unsupported die ref attribute form: '%s'"), | |
19856 | dwarf_form_name (attr->form)); | |
b64f50a1 | 19857 | return retval; |
c906108c SS |
19858 | } |
19859 | ||
43bbcdc2 PH |
19860 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
19861 | * the value held by the attribute is not constant. */ | |
a02abb62 | 19862 | |
43bbcdc2 | 19863 | static LONGEST |
ff39bb5e | 19864 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 JB |
19865 | { |
19866 | if (attr->form == DW_FORM_sdata) | |
19867 | return DW_SND (attr); | |
19868 | else if (attr->form == DW_FORM_udata | |
19869 | || attr->form == DW_FORM_data1 | |
19870 | || attr->form == DW_FORM_data2 | |
19871 | || attr->form == DW_FORM_data4 | |
19872 | || attr->form == DW_FORM_data8) | |
19873 | return DW_UNSND (attr); | |
19874 | else | |
19875 | { | |
3e43a32a MS |
19876 | complaint (&symfile_complaints, |
19877 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
19878 | dwarf_form_name (attr->form)); |
19879 | return default_value; | |
19880 | } | |
19881 | } | |
19882 | ||
348e048f DE |
19883 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
19884 | On entry *REF_CU is the CU of SRC_DIE. | |
19885 | On exit *REF_CU is the CU of the result. */ | |
19886 | ||
19887 | static struct die_info * | |
ff39bb5e | 19888 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
19889 | struct dwarf2_cu **ref_cu) |
19890 | { | |
19891 | struct die_info *die; | |
19892 | ||
7771576e | 19893 | if (attr_form_is_ref (attr)) |
348e048f | 19894 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 19895 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
19896 | die = follow_die_sig (src_die, attr, ref_cu); |
19897 | else | |
19898 | { | |
19899 | dump_die_for_error (src_die); | |
19900 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 19901 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
19902 | } |
19903 | ||
19904 | return die; | |
03dd20cc DJ |
19905 | } |
19906 | ||
5c631832 | 19907 | /* Follow reference OFFSET. |
673bfd45 DE |
19908 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
19909 | On exit *REF_CU is the CU of the result. | |
19910 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 19911 | |
f9aca02d | 19912 | static struct die_info * |
36586728 TT |
19913 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
19914 | struct dwarf2_cu **ref_cu) | |
c906108c | 19915 | { |
10b3939b | 19916 | struct die_info temp_die; |
f2f0e013 | 19917 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 19918 | |
348e048f DE |
19919 | gdb_assert (cu->per_cu != NULL); |
19920 | ||
98bfdba5 PA |
19921 | target_cu = cu; |
19922 | ||
3019eac3 | 19923 | if (cu->per_cu->is_debug_types) |
348e048f DE |
19924 | { |
19925 | /* .debug_types CUs cannot reference anything outside their CU. | |
19926 | If they need to, they have to reference a signatured type via | |
55f1336d | 19927 | DW_FORM_ref_sig8. */ |
348e048f | 19928 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 19929 | return NULL; |
348e048f | 19930 | } |
36586728 TT |
19931 | else if (offset_in_dwz != cu->per_cu->is_dwz |
19932 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
19933 | { |
19934 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 19935 | |
36586728 TT |
19936 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
19937 | cu->objfile); | |
03dd20cc DJ |
19938 | |
19939 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
19940 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
19941 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 19942 | |
10b3939b DJ |
19943 | target_cu = per_cu->cu; |
19944 | } | |
98bfdba5 PA |
19945 | else if (cu->dies == NULL) |
19946 | { | |
19947 | /* We're loading full DIEs during partial symbol reading. */ | |
19948 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 19949 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 19950 | } |
c906108c | 19951 | |
f2f0e013 | 19952 | *ref_cu = target_cu; |
51545339 | 19953 | temp_die.offset = offset; |
b64f50a1 | 19954 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 19955 | } |
10b3939b | 19956 | |
5c631832 JK |
19957 | /* Follow reference attribute ATTR of SRC_DIE. |
19958 | On entry *REF_CU is the CU of SRC_DIE. | |
19959 | On exit *REF_CU is the CU of the result. */ | |
19960 | ||
19961 | static struct die_info * | |
ff39bb5e | 19962 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
19963 | struct dwarf2_cu **ref_cu) |
19964 | { | |
b64f50a1 | 19965 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
19966 | struct dwarf2_cu *cu = *ref_cu; |
19967 | struct die_info *die; | |
19968 | ||
36586728 TT |
19969 | die = follow_die_offset (offset, |
19970 | (attr->form == DW_FORM_GNU_ref_alt | |
19971 | || cu->per_cu->is_dwz), | |
19972 | ref_cu); | |
5c631832 JK |
19973 | if (!die) |
19974 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
19975 | "at 0x%x [in module %s]"), | |
4262abfb JK |
19976 | offset.sect_off, src_die->offset.sect_off, |
19977 | objfile_name (cu->objfile)); | |
348e048f | 19978 | |
5c631832 JK |
19979 | return die; |
19980 | } | |
19981 | ||
d83e736b JK |
19982 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
19983 | Returned value is intended for DW_OP_call*. Returned | |
19984 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
19985 | |
19986 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
19987 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
19988 | struct dwarf2_per_cu_data *per_cu, | |
19989 | CORE_ADDR (*get_frame_pc) (void *baton), | |
19990 | void *baton) | |
5c631832 | 19991 | { |
918dd910 | 19992 | struct dwarf2_cu *cu; |
5c631832 JK |
19993 | struct die_info *die; |
19994 | struct attribute *attr; | |
19995 | struct dwarf2_locexpr_baton retval; | |
19996 | ||
8cf6f0b1 TT |
19997 | dw2_setup (per_cu->objfile); |
19998 | ||
918dd910 JK |
19999 | if (per_cu->cu == NULL) |
20000 | load_cu (per_cu); | |
20001 | cu = per_cu->cu; | |
20002 | ||
36586728 | 20003 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
20004 | if (!die) |
20005 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 20006 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
20007 | |
20008 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
20009 | if (!attr) | |
20010 | { | |
e103e986 JK |
20011 | /* DWARF: "If there is no such attribute, then there is no effect.". |
20012 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 20013 | |
e103e986 | 20014 | retval.data = NULL; |
5c631832 JK |
20015 | retval.size = 0; |
20016 | } | |
8cf6f0b1 TT |
20017 | else if (attr_form_is_section_offset (attr)) |
20018 | { | |
20019 | struct dwarf2_loclist_baton loclist_baton; | |
20020 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
20021 | size_t size; | |
20022 | ||
20023 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
20024 | ||
20025 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
20026 | &size, pc); | |
20027 | retval.size = size; | |
20028 | } | |
5c631832 JK |
20029 | else |
20030 | { | |
20031 | if (!attr_form_is_block (attr)) | |
20032 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
20033 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
4262abfb | 20034 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
20035 | |
20036 | retval.data = DW_BLOCK (attr)->data; | |
20037 | retval.size = DW_BLOCK (attr)->size; | |
20038 | } | |
20039 | retval.per_cu = cu->per_cu; | |
918dd910 | 20040 | |
918dd910 JK |
20041 | age_cached_comp_units (); |
20042 | ||
5c631832 | 20043 | return retval; |
348e048f DE |
20044 | } |
20045 | ||
8b9737bf TT |
20046 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
20047 | offset. */ | |
20048 | ||
20049 | struct dwarf2_locexpr_baton | |
20050 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
20051 | struct dwarf2_per_cu_data *per_cu, | |
20052 | CORE_ADDR (*get_frame_pc) (void *baton), | |
20053 | void *baton) | |
20054 | { | |
20055 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
20056 | ||
20057 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
20058 | } | |
20059 | ||
b6807d98 TT |
20060 | /* Write a constant of a given type as target-ordered bytes into |
20061 | OBSTACK. */ | |
20062 | ||
20063 | static const gdb_byte * | |
20064 | write_constant_as_bytes (struct obstack *obstack, | |
20065 | enum bfd_endian byte_order, | |
20066 | struct type *type, | |
20067 | ULONGEST value, | |
20068 | LONGEST *len) | |
20069 | { | |
20070 | gdb_byte *result; | |
20071 | ||
20072 | *len = TYPE_LENGTH (type); | |
20073 | result = obstack_alloc (obstack, *len); | |
20074 | store_unsigned_integer (result, *len, byte_order, value); | |
20075 | ||
20076 | return result; | |
20077 | } | |
20078 | ||
20079 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
20080 | pointer to the constant bytes and set LEN to the length of the | |
20081 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
20082 | does not have a DW_AT_const_value, return NULL. */ | |
20083 | ||
20084 | const gdb_byte * | |
20085 | dwarf2_fetch_constant_bytes (sect_offset offset, | |
20086 | struct dwarf2_per_cu_data *per_cu, | |
20087 | struct obstack *obstack, | |
20088 | LONGEST *len) | |
20089 | { | |
20090 | struct dwarf2_cu *cu; | |
20091 | struct die_info *die; | |
20092 | struct attribute *attr; | |
20093 | const gdb_byte *result = NULL; | |
20094 | struct type *type; | |
20095 | LONGEST value; | |
20096 | enum bfd_endian byte_order; | |
20097 | ||
20098 | dw2_setup (per_cu->objfile); | |
20099 | ||
20100 | if (per_cu->cu == NULL) | |
20101 | load_cu (per_cu); | |
20102 | cu = per_cu->cu; | |
20103 | ||
20104 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); | |
20105 | if (!die) | |
20106 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 20107 | offset.sect_off, objfile_name (per_cu->objfile)); |
b6807d98 TT |
20108 | |
20109 | ||
20110 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
20111 | if (attr == NULL) | |
20112 | return NULL; | |
20113 | ||
20114 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
20115 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
20116 | ||
20117 | switch (attr->form) | |
20118 | { | |
20119 | case DW_FORM_addr: | |
20120 | case DW_FORM_GNU_addr_index: | |
20121 | { | |
20122 | gdb_byte *tem; | |
20123 | ||
20124 | *len = cu->header.addr_size; | |
20125 | tem = obstack_alloc (obstack, *len); | |
20126 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); | |
20127 | result = tem; | |
20128 | } | |
20129 | break; | |
20130 | case DW_FORM_string: | |
20131 | case DW_FORM_strp: | |
20132 | case DW_FORM_GNU_str_index: | |
20133 | case DW_FORM_GNU_strp_alt: | |
20134 | /* DW_STRING is already allocated on the objfile obstack, point | |
20135 | directly to it. */ | |
20136 | result = (const gdb_byte *) DW_STRING (attr); | |
20137 | *len = strlen (DW_STRING (attr)); | |
20138 | break; | |
20139 | case DW_FORM_block1: | |
20140 | case DW_FORM_block2: | |
20141 | case DW_FORM_block4: | |
20142 | case DW_FORM_block: | |
20143 | case DW_FORM_exprloc: | |
20144 | result = DW_BLOCK (attr)->data; | |
20145 | *len = DW_BLOCK (attr)->size; | |
20146 | break; | |
20147 | ||
20148 | /* The DW_AT_const_value attributes are supposed to carry the | |
20149 | symbol's value "represented as it would be on the target | |
20150 | architecture." By the time we get here, it's already been | |
20151 | converted to host endianness, so we just need to sign- or | |
20152 | zero-extend it as appropriate. */ | |
20153 | case DW_FORM_data1: | |
20154 | type = die_type (die, cu); | |
20155 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
20156 | if (result == NULL) | |
20157 | result = write_constant_as_bytes (obstack, byte_order, | |
20158 | type, value, len); | |
20159 | break; | |
20160 | case DW_FORM_data2: | |
20161 | type = die_type (die, cu); | |
20162 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
20163 | if (result == NULL) | |
20164 | result = write_constant_as_bytes (obstack, byte_order, | |
20165 | type, value, len); | |
20166 | break; | |
20167 | case DW_FORM_data4: | |
20168 | type = die_type (die, cu); | |
20169 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
20170 | if (result == NULL) | |
20171 | result = write_constant_as_bytes (obstack, byte_order, | |
20172 | type, value, len); | |
20173 | break; | |
20174 | case DW_FORM_data8: | |
20175 | type = die_type (die, cu); | |
20176 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
20177 | if (result == NULL) | |
20178 | result = write_constant_as_bytes (obstack, byte_order, | |
20179 | type, value, len); | |
20180 | break; | |
20181 | ||
20182 | case DW_FORM_sdata: | |
20183 | type = die_type (die, cu); | |
20184 | result = write_constant_as_bytes (obstack, byte_order, | |
20185 | type, DW_SND (attr), len); | |
20186 | break; | |
20187 | ||
20188 | case DW_FORM_udata: | |
20189 | type = die_type (die, cu); | |
20190 | result = write_constant_as_bytes (obstack, byte_order, | |
20191 | type, DW_UNSND (attr), len); | |
20192 | break; | |
20193 | ||
20194 | default: | |
20195 | complaint (&symfile_complaints, | |
20196 | _("unsupported const value attribute form: '%s'"), | |
20197 | dwarf_form_name (attr->form)); | |
20198 | break; | |
20199 | } | |
20200 | ||
20201 | return result; | |
20202 | } | |
20203 | ||
8a9b8146 TT |
20204 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
20205 | PER_CU. */ | |
20206 | ||
20207 | struct type * | |
b64f50a1 | 20208 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
20209 | struct dwarf2_per_cu_data *per_cu) |
20210 | { | |
b64f50a1 JK |
20211 | sect_offset die_offset_sect; |
20212 | ||
8a9b8146 | 20213 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
20214 | |
20215 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
20216 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
20217 | } |
20218 | ||
ac9ec31b | 20219 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 20220 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
20221 | On exit *REF_CU is the CU of the result. |
20222 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
20223 | |
20224 | static struct die_info * | |
ac9ec31b DE |
20225 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
20226 | struct dwarf2_cu **ref_cu) | |
348e048f DE |
20227 | { |
20228 | struct objfile *objfile = (*ref_cu)->objfile; | |
20229 | struct die_info temp_die; | |
348e048f DE |
20230 | struct dwarf2_cu *sig_cu; |
20231 | struct die_info *die; | |
20232 | ||
ac9ec31b DE |
20233 | /* While it might be nice to assert sig_type->type == NULL here, |
20234 | we can get here for DW_AT_imported_declaration where we need | |
20235 | the DIE not the type. */ | |
348e048f DE |
20236 | |
20237 | /* If necessary, add it to the queue and load its DIEs. */ | |
20238 | ||
95554aad | 20239 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 20240 | read_signatured_type (sig_type); |
348e048f | 20241 | |
348e048f | 20242 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 20243 | gdb_assert (sig_cu != NULL); |
3019eac3 DE |
20244 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
20245 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
20246 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
20247 | temp_die.offset.sect_off); | |
348e048f DE |
20248 | if (die) |
20249 | { | |
796a7ff8 DE |
20250 | /* For .gdb_index version 7 keep track of included TUs. |
20251 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
20252 | if (dwarf2_per_objfile->index_table != NULL | |
20253 | && dwarf2_per_objfile->index_table->version <= 7) | |
20254 | { | |
20255 | VEC_safe_push (dwarf2_per_cu_ptr, | |
20256 | (*ref_cu)->per_cu->imported_symtabs, | |
20257 | sig_cu->per_cu); | |
20258 | } | |
20259 | ||
348e048f DE |
20260 | *ref_cu = sig_cu; |
20261 | return die; | |
20262 | } | |
20263 | ||
ac9ec31b DE |
20264 | return NULL; |
20265 | } | |
20266 | ||
20267 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
20268 | On entry *REF_CU is the CU of SRC_DIE. | |
20269 | On exit *REF_CU is the CU of the result. | |
20270 | The result is the DIE of the type. | |
20271 | If the referenced type cannot be found an error is thrown. */ | |
20272 | ||
20273 | static struct die_info * | |
ff39bb5e | 20274 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
20275 | struct dwarf2_cu **ref_cu) |
20276 | { | |
20277 | ULONGEST signature = DW_SIGNATURE (attr); | |
20278 | struct signatured_type *sig_type; | |
20279 | struct die_info *die; | |
20280 | ||
20281 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
20282 | ||
a2ce51a0 | 20283 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
20284 | /* sig_type will be NULL if the signatured type is missing from |
20285 | the debug info. */ | |
20286 | if (sig_type == NULL) | |
20287 | { | |
20288 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20289 | " from DIE at 0x%x [in module %s]"), | |
20290 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20291 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20292 | } |
20293 | ||
20294 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
20295 | if (die == NULL) | |
20296 | { | |
20297 | dump_die_for_error (src_die); | |
20298 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20299 | " from DIE at 0x%x [in module %s]"), | |
20300 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20301 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20302 | } |
20303 | ||
20304 | return die; | |
20305 | } | |
20306 | ||
20307 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
20308 | reading in and processing the type unit if necessary. */ | |
20309 | ||
20310 | static struct type * | |
20311 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
20312 | struct dwarf2_cu *cu) | |
20313 | { | |
20314 | struct signatured_type *sig_type; | |
20315 | struct dwarf2_cu *type_cu; | |
20316 | struct die_info *type_die; | |
20317 | struct type *type; | |
20318 | ||
a2ce51a0 | 20319 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
20320 | /* sig_type will be NULL if the signatured type is missing from |
20321 | the debug info. */ | |
20322 | if (sig_type == NULL) | |
20323 | { | |
20324 | complaint (&symfile_complaints, | |
20325 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20326 | " from DIE at 0x%x [in module %s]"), | |
20327 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20328 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20329 | return build_error_marker_type (cu, die); |
20330 | } | |
20331 | ||
20332 | /* If we already know the type we're done. */ | |
20333 | if (sig_type->type != NULL) | |
20334 | return sig_type->type; | |
20335 | ||
20336 | type_cu = cu; | |
20337 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
20338 | if (type_die != NULL) | |
20339 | { | |
20340 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
20341 | is created. This is important, for example, because for c++ classes | |
20342 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
20343 | type = read_type_die (type_die, type_cu); | |
20344 | if (type == NULL) | |
20345 | { | |
20346 | complaint (&symfile_complaints, | |
20347 | _("Dwarf Error: Cannot build signatured type %s" | |
20348 | " referenced from DIE at 0x%x [in module %s]"), | |
20349 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20350 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20351 | type = build_error_marker_type (cu, die); |
20352 | } | |
20353 | } | |
20354 | else | |
20355 | { | |
20356 | complaint (&symfile_complaints, | |
20357 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20358 | " from DIE at 0x%x [in module %s]"), | |
20359 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20360 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20361 | type = build_error_marker_type (cu, die); |
20362 | } | |
20363 | sig_type->type = type; | |
20364 | ||
20365 | return type; | |
20366 | } | |
20367 | ||
20368 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
20369 | reading in and processing the type unit if necessary. */ | |
20370 | ||
20371 | static struct type * | |
ff39bb5e | 20372 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 20373 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
20374 | { |
20375 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 20376 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
20377 | { |
20378 | struct dwarf2_cu *type_cu = cu; | |
20379 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
20380 | ||
20381 | return read_type_die (type_die, type_cu); | |
20382 | } | |
20383 | else if (attr->form == DW_FORM_ref_sig8) | |
20384 | { | |
20385 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
20386 | } | |
20387 | else | |
20388 | { | |
20389 | complaint (&symfile_complaints, | |
20390 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
20391 | " at 0x%x [in module %s]"), | |
20392 | dwarf_form_name (attr->form), die->offset.sect_off, | |
4262abfb | 20393 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20394 | return build_error_marker_type (cu, die); |
20395 | } | |
348e048f DE |
20396 | } |
20397 | ||
e5fe5e75 | 20398 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
20399 | |
20400 | static void | |
e5fe5e75 | 20401 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 20402 | { |
52dc124a | 20403 | struct signatured_type *sig_type; |
348e048f | 20404 | |
f4dc4d17 DE |
20405 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
20406 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
20407 | ||
6721b2ec DE |
20408 | /* We have the per_cu, but we need the signatured_type. |
20409 | Fortunately this is an easy translation. */ | |
20410 | gdb_assert (per_cu->is_debug_types); | |
20411 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 20412 | |
6721b2ec | 20413 | gdb_assert (per_cu->cu == NULL); |
348e048f | 20414 | |
52dc124a | 20415 | read_signatured_type (sig_type); |
348e048f | 20416 | |
6721b2ec | 20417 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
20418 | } |
20419 | ||
dee91e82 DE |
20420 | /* die_reader_func for read_signatured_type. |
20421 | This is identical to load_full_comp_unit_reader, | |
20422 | but is kept separate for now. */ | |
348e048f DE |
20423 | |
20424 | static void | |
dee91e82 | 20425 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 20426 | const gdb_byte *info_ptr, |
dee91e82 DE |
20427 | struct die_info *comp_unit_die, |
20428 | int has_children, | |
20429 | void *data) | |
348e048f | 20430 | { |
dee91e82 | 20431 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 20432 | |
dee91e82 DE |
20433 | gdb_assert (cu->die_hash == NULL); |
20434 | cu->die_hash = | |
20435 | htab_create_alloc_ex (cu->header.length / 12, | |
20436 | die_hash, | |
20437 | die_eq, | |
20438 | NULL, | |
20439 | &cu->comp_unit_obstack, | |
20440 | hashtab_obstack_allocate, | |
20441 | dummy_obstack_deallocate); | |
348e048f | 20442 | |
dee91e82 DE |
20443 | if (has_children) |
20444 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
20445 | &info_ptr, comp_unit_die); | |
20446 | cu->dies = comp_unit_die; | |
20447 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
20448 | |
20449 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 20450 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 20451 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
20452 | or we won't be able to build types correctly. |
20453 | Similarly, if we do not read the producer, we can not apply | |
20454 | producer-specific interpretation. */ | |
95554aad | 20455 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 20456 | } |
348e048f | 20457 | |
3019eac3 DE |
20458 | /* Read in a signatured type and build its CU and DIEs. |
20459 | If the type is a stub for the real type in a DWO file, | |
20460 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
20461 | |
20462 | static void | |
20463 | read_signatured_type (struct signatured_type *sig_type) | |
20464 | { | |
20465 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 20466 | |
3019eac3 | 20467 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 20468 | gdb_assert (per_cu->cu == NULL); |
348e048f | 20469 | |
f4dc4d17 DE |
20470 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
20471 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 20472 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
20473 | } |
20474 | ||
c906108c SS |
20475 | /* Decode simple location descriptions. |
20476 | Given a pointer to a dwarf block that defines a location, compute | |
20477 | the location and return the value. | |
20478 | ||
4cecd739 DJ |
20479 | NOTE drow/2003-11-18: This function is called in two situations |
20480 | now: for the address of static or global variables (partial symbols | |
20481 | only) and for offsets into structures which are expected to be | |
20482 | (more or less) constant. The partial symbol case should go away, | |
20483 | and only the constant case should remain. That will let this | |
20484 | function complain more accurately. A few special modes are allowed | |
20485 | without complaint for global variables (for instance, global | |
20486 | register values and thread-local values). | |
c906108c SS |
20487 | |
20488 | A location description containing no operations indicates that the | |
4cecd739 | 20489 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
20490 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
20491 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
20492 | complaint. |
20493 | ||
20494 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
20495 | |
20496 | static CORE_ADDR | |
e7c27a73 | 20497 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 20498 | { |
e7c27a73 | 20499 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
20500 | size_t i; |
20501 | size_t size = blk->size; | |
d521ce57 | 20502 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
20503 | CORE_ADDR stack[64]; |
20504 | int stacki; | |
20505 | unsigned int bytes_read, unsnd; | |
20506 | gdb_byte op; | |
c906108c | 20507 | |
21ae7a4d JK |
20508 | i = 0; |
20509 | stacki = 0; | |
20510 | stack[stacki] = 0; | |
20511 | stack[++stacki] = 0; | |
20512 | ||
20513 | while (i < size) | |
20514 | { | |
20515 | op = data[i++]; | |
20516 | switch (op) | |
20517 | { | |
20518 | case DW_OP_lit0: | |
20519 | case DW_OP_lit1: | |
20520 | case DW_OP_lit2: | |
20521 | case DW_OP_lit3: | |
20522 | case DW_OP_lit4: | |
20523 | case DW_OP_lit5: | |
20524 | case DW_OP_lit6: | |
20525 | case DW_OP_lit7: | |
20526 | case DW_OP_lit8: | |
20527 | case DW_OP_lit9: | |
20528 | case DW_OP_lit10: | |
20529 | case DW_OP_lit11: | |
20530 | case DW_OP_lit12: | |
20531 | case DW_OP_lit13: | |
20532 | case DW_OP_lit14: | |
20533 | case DW_OP_lit15: | |
20534 | case DW_OP_lit16: | |
20535 | case DW_OP_lit17: | |
20536 | case DW_OP_lit18: | |
20537 | case DW_OP_lit19: | |
20538 | case DW_OP_lit20: | |
20539 | case DW_OP_lit21: | |
20540 | case DW_OP_lit22: | |
20541 | case DW_OP_lit23: | |
20542 | case DW_OP_lit24: | |
20543 | case DW_OP_lit25: | |
20544 | case DW_OP_lit26: | |
20545 | case DW_OP_lit27: | |
20546 | case DW_OP_lit28: | |
20547 | case DW_OP_lit29: | |
20548 | case DW_OP_lit30: | |
20549 | case DW_OP_lit31: | |
20550 | stack[++stacki] = op - DW_OP_lit0; | |
20551 | break; | |
f1bea926 | 20552 | |
21ae7a4d JK |
20553 | case DW_OP_reg0: |
20554 | case DW_OP_reg1: | |
20555 | case DW_OP_reg2: | |
20556 | case DW_OP_reg3: | |
20557 | case DW_OP_reg4: | |
20558 | case DW_OP_reg5: | |
20559 | case DW_OP_reg6: | |
20560 | case DW_OP_reg7: | |
20561 | case DW_OP_reg8: | |
20562 | case DW_OP_reg9: | |
20563 | case DW_OP_reg10: | |
20564 | case DW_OP_reg11: | |
20565 | case DW_OP_reg12: | |
20566 | case DW_OP_reg13: | |
20567 | case DW_OP_reg14: | |
20568 | case DW_OP_reg15: | |
20569 | case DW_OP_reg16: | |
20570 | case DW_OP_reg17: | |
20571 | case DW_OP_reg18: | |
20572 | case DW_OP_reg19: | |
20573 | case DW_OP_reg20: | |
20574 | case DW_OP_reg21: | |
20575 | case DW_OP_reg22: | |
20576 | case DW_OP_reg23: | |
20577 | case DW_OP_reg24: | |
20578 | case DW_OP_reg25: | |
20579 | case DW_OP_reg26: | |
20580 | case DW_OP_reg27: | |
20581 | case DW_OP_reg28: | |
20582 | case DW_OP_reg29: | |
20583 | case DW_OP_reg30: | |
20584 | case DW_OP_reg31: | |
20585 | stack[++stacki] = op - DW_OP_reg0; | |
20586 | if (i < size) | |
20587 | dwarf2_complex_location_expr_complaint (); | |
20588 | break; | |
c906108c | 20589 | |
21ae7a4d JK |
20590 | case DW_OP_regx: |
20591 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
20592 | i += bytes_read; | |
20593 | stack[++stacki] = unsnd; | |
20594 | if (i < size) | |
20595 | dwarf2_complex_location_expr_complaint (); | |
20596 | break; | |
c906108c | 20597 | |
21ae7a4d JK |
20598 | case DW_OP_addr: |
20599 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
20600 | cu, &bytes_read); | |
20601 | i += bytes_read; | |
20602 | break; | |
d53d4ac5 | 20603 | |
21ae7a4d JK |
20604 | case DW_OP_const1u: |
20605 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
20606 | i += 1; | |
20607 | break; | |
20608 | ||
20609 | case DW_OP_const1s: | |
20610 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
20611 | i += 1; | |
20612 | break; | |
20613 | ||
20614 | case DW_OP_const2u: | |
20615 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
20616 | i += 2; | |
20617 | break; | |
20618 | ||
20619 | case DW_OP_const2s: | |
20620 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
20621 | i += 2; | |
20622 | break; | |
d53d4ac5 | 20623 | |
21ae7a4d JK |
20624 | case DW_OP_const4u: |
20625 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
20626 | i += 4; | |
20627 | break; | |
20628 | ||
20629 | case DW_OP_const4s: | |
20630 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
20631 | i += 4; | |
20632 | break; | |
20633 | ||
585861ea JK |
20634 | case DW_OP_const8u: |
20635 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
20636 | i += 8; | |
20637 | break; | |
20638 | ||
21ae7a4d JK |
20639 | case DW_OP_constu: |
20640 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
20641 | &bytes_read); | |
20642 | i += bytes_read; | |
20643 | break; | |
20644 | ||
20645 | case DW_OP_consts: | |
20646 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
20647 | i += bytes_read; | |
20648 | break; | |
20649 | ||
20650 | case DW_OP_dup: | |
20651 | stack[stacki + 1] = stack[stacki]; | |
20652 | stacki++; | |
20653 | break; | |
20654 | ||
20655 | case DW_OP_plus: | |
20656 | stack[stacki - 1] += stack[stacki]; | |
20657 | stacki--; | |
20658 | break; | |
20659 | ||
20660 | case DW_OP_plus_uconst: | |
20661 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
20662 | &bytes_read); | |
20663 | i += bytes_read; | |
20664 | break; | |
20665 | ||
20666 | case DW_OP_minus: | |
20667 | stack[stacki - 1] -= stack[stacki]; | |
20668 | stacki--; | |
20669 | break; | |
20670 | ||
20671 | case DW_OP_deref: | |
20672 | /* If we're not the last op, then we definitely can't encode | |
20673 | this using GDB's address_class enum. This is valid for partial | |
20674 | global symbols, although the variable's address will be bogus | |
20675 | in the psymtab. */ | |
20676 | if (i < size) | |
20677 | dwarf2_complex_location_expr_complaint (); | |
20678 | break; | |
20679 | ||
20680 | case DW_OP_GNU_push_tls_address: | |
20681 | /* The top of the stack has the offset from the beginning | |
20682 | of the thread control block at which the variable is located. */ | |
20683 | /* Nothing should follow this operator, so the top of stack would | |
20684 | be returned. */ | |
20685 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
20686 | address will be bogus in the psymtab. Make it always at least |
20687 | non-zero to not look as a variable garbage collected by linker | |
20688 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
20689 | if (i < size) |
20690 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 20691 | stack[stacki]++; |
21ae7a4d JK |
20692 | break; |
20693 | ||
20694 | case DW_OP_GNU_uninit: | |
20695 | break; | |
20696 | ||
3019eac3 | 20697 | case DW_OP_GNU_addr_index: |
49f6c839 | 20698 | case DW_OP_GNU_const_index: |
3019eac3 DE |
20699 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
20700 | &bytes_read); | |
20701 | i += bytes_read; | |
20702 | break; | |
20703 | ||
21ae7a4d JK |
20704 | default: |
20705 | { | |
f39c6ffd | 20706 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
20707 | |
20708 | if (name) | |
20709 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
20710 | name); | |
20711 | else | |
20712 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
20713 | op); | |
20714 | } | |
20715 | ||
20716 | return (stack[stacki]); | |
d53d4ac5 | 20717 | } |
3c6e0cb3 | 20718 | |
21ae7a4d JK |
20719 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
20720 | outside of the allocated space. Also enforce minimum>0. */ | |
20721 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
20722 | { | |
20723 | complaint (&symfile_complaints, | |
20724 | _("location description stack overflow")); | |
20725 | return 0; | |
20726 | } | |
20727 | ||
20728 | if (stacki <= 0) | |
20729 | { | |
20730 | complaint (&symfile_complaints, | |
20731 | _("location description stack underflow")); | |
20732 | return 0; | |
20733 | } | |
20734 | } | |
20735 | return (stack[stacki]); | |
c906108c SS |
20736 | } |
20737 | ||
20738 | /* memory allocation interface */ | |
20739 | ||
c906108c | 20740 | static struct dwarf_block * |
7b5a2f43 | 20741 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
20742 | { |
20743 | struct dwarf_block *blk; | |
20744 | ||
20745 | blk = (struct dwarf_block *) | |
7b5a2f43 | 20746 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
20747 | return (blk); |
20748 | } | |
20749 | ||
c906108c | 20750 | static struct die_info * |
b60c80d6 | 20751 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
20752 | { |
20753 | struct die_info *die; | |
b60c80d6 DJ |
20754 | size_t size = sizeof (struct die_info); |
20755 | ||
20756 | if (num_attrs > 1) | |
20757 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 20758 | |
b60c80d6 | 20759 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
20760 | memset (die, 0, sizeof (struct die_info)); |
20761 | return (die); | |
20762 | } | |
2e276125 JB |
20763 | |
20764 | \f | |
20765 | /* Macro support. */ | |
20766 | ||
233d95b5 JK |
20767 | /* Return file name relative to the compilation directory of file number I in |
20768 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 20769 | responsible for freeing it. */ |
233d95b5 | 20770 | |
2e276125 | 20771 | static char * |
233d95b5 | 20772 | file_file_name (int file, struct line_header *lh) |
2e276125 | 20773 | { |
6a83a1e6 EZ |
20774 | /* Is the file number a valid index into the line header's file name |
20775 | table? Remember that file numbers start with one, not zero. */ | |
20776 | if (1 <= file && file <= lh->num_file_names) | |
20777 | { | |
20778 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 20779 | |
afa6c9ab SL |
20780 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0 |
20781 | || lh->include_dirs == NULL) | |
6a83a1e6 | 20782 | return xstrdup (fe->name); |
233d95b5 JK |
20783 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
20784 | fe->name, NULL); | |
6a83a1e6 | 20785 | } |
2e276125 JB |
20786 | else |
20787 | { | |
6a83a1e6 EZ |
20788 | /* The compiler produced a bogus file number. We can at least |
20789 | record the macro definitions made in the file, even if we | |
20790 | won't be able to find the file by name. */ | |
20791 | char fake_name[80]; | |
9a619af0 | 20792 | |
8c042590 PM |
20793 | xsnprintf (fake_name, sizeof (fake_name), |
20794 | "<bad macro file number %d>", file); | |
2e276125 | 20795 | |
6e70227d | 20796 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
20797 | _("bad file number in macro information (%d)"), |
20798 | file); | |
2e276125 | 20799 | |
6a83a1e6 | 20800 | return xstrdup (fake_name); |
2e276125 JB |
20801 | } |
20802 | } | |
20803 | ||
233d95b5 JK |
20804 | /* Return the full name of file number I in *LH's file name table. |
20805 | Use COMP_DIR as the name of the current directory of the | |
20806 | compilation. The result is allocated using xmalloc; the caller is | |
20807 | responsible for freeing it. */ | |
20808 | static char * | |
20809 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
20810 | { | |
20811 | /* Is the file number a valid index into the line header's file name | |
20812 | table? Remember that file numbers start with one, not zero. */ | |
20813 | if (1 <= file && file <= lh->num_file_names) | |
20814 | { | |
20815 | char *relative = file_file_name (file, lh); | |
20816 | ||
20817 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
20818 | return relative; | |
20819 | return reconcat (relative, comp_dir, SLASH_STRING, relative, NULL); | |
20820 | } | |
20821 | else | |
20822 | return file_file_name (file, lh); | |
20823 | } | |
20824 | ||
2e276125 JB |
20825 | |
20826 | static struct macro_source_file * | |
20827 | macro_start_file (int file, int line, | |
20828 | struct macro_source_file *current_file, | |
43f3e411 | 20829 | struct line_header *lh) |
2e276125 | 20830 | { |
233d95b5 JK |
20831 | /* File name relative to the compilation directory of this source file. */ |
20832 | char *file_name = file_file_name (file, lh); | |
2e276125 | 20833 | |
2e276125 | 20834 | if (! current_file) |
abc9d0dc | 20835 | { |
fc474241 DE |
20836 | /* Note: We don't create a macro table for this compilation unit |
20837 | at all until we actually get a filename. */ | |
43f3e411 | 20838 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 20839 | |
abc9d0dc TT |
20840 | /* If we have no current file, then this must be the start_file |
20841 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
20842 | current_file = macro_set_main (macro_table, file_name); |
20843 | macro_define_special (macro_table); | |
abc9d0dc | 20844 | } |
2e276125 | 20845 | else |
233d95b5 | 20846 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 20847 | |
233d95b5 | 20848 | xfree (file_name); |
6e70227d | 20849 | |
2e276125 JB |
20850 | return current_file; |
20851 | } | |
20852 | ||
20853 | ||
20854 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
20855 | followed by a null byte. */ | |
20856 | static char * | |
20857 | copy_string (const char *buf, int len) | |
20858 | { | |
20859 | char *s = xmalloc (len + 1); | |
9a619af0 | 20860 | |
2e276125 JB |
20861 | memcpy (s, buf, len); |
20862 | s[len] = '\0'; | |
2e276125 JB |
20863 | return s; |
20864 | } | |
20865 | ||
20866 | ||
20867 | static const char * | |
20868 | consume_improper_spaces (const char *p, const char *body) | |
20869 | { | |
20870 | if (*p == ' ') | |
20871 | { | |
4d3c2250 | 20872 | complaint (&symfile_complaints, |
3e43a32a MS |
20873 | _("macro definition contains spaces " |
20874 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 20875 | body); |
2e276125 JB |
20876 | |
20877 | while (*p == ' ') | |
20878 | p++; | |
20879 | } | |
20880 | ||
20881 | return p; | |
20882 | } | |
20883 | ||
20884 | ||
20885 | static void | |
20886 | parse_macro_definition (struct macro_source_file *file, int line, | |
20887 | const char *body) | |
20888 | { | |
20889 | const char *p; | |
20890 | ||
20891 | /* The body string takes one of two forms. For object-like macro | |
20892 | definitions, it should be: | |
20893 | ||
20894 | <macro name> " " <definition> | |
20895 | ||
20896 | For function-like macro definitions, it should be: | |
20897 | ||
20898 | <macro name> "() " <definition> | |
20899 | or | |
20900 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
20901 | ||
20902 | Spaces may appear only where explicitly indicated, and in the | |
20903 | <definition>. | |
20904 | ||
20905 | The Dwarf 2 spec says that an object-like macro's name is always | |
20906 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 20907 | the space when the macro's definition is the empty string. |
2e276125 JB |
20908 | |
20909 | The Dwarf 2 spec says that there should be no spaces between the | |
20910 | formal arguments in a function-like macro's formal argument list, | |
20911 | but versions of GCC around March 2002 include spaces after the | |
20912 | commas. */ | |
20913 | ||
20914 | ||
20915 | /* Find the extent of the macro name. The macro name is terminated | |
20916 | by either a space or null character (for an object-like macro) or | |
20917 | an opening paren (for a function-like macro). */ | |
20918 | for (p = body; *p; p++) | |
20919 | if (*p == ' ' || *p == '(') | |
20920 | break; | |
20921 | ||
20922 | if (*p == ' ' || *p == '\0') | |
20923 | { | |
20924 | /* It's an object-like macro. */ | |
20925 | int name_len = p - body; | |
20926 | char *name = copy_string (body, name_len); | |
20927 | const char *replacement; | |
20928 | ||
20929 | if (*p == ' ') | |
20930 | replacement = body + name_len + 1; | |
20931 | else | |
20932 | { | |
4d3c2250 | 20933 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20934 | replacement = body + name_len; |
20935 | } | |
6e70227d | 20936 | |
2e276125 JB |
20937 | macro_define_object (file, line, name, replacement); |
20938 | ||
20939 | xfree (name); | |
20940 | } | |
20941 | else if (*p == '(') | |
20942 | { | |
20943 | /* It's a function-like macro. */ | |
20944 | char *name = copy_string (body, p - body); | |
20945 | int argc = 0; | |
20946 | int argv_size = 1; | |
20947 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
20948 | ||
20949 | p++; | |
20950 | ||
20951 | p = consume_improper_spaces (p, body); | |
20952 | ||
20953 | /* Parse the formal argument list. */ | |
20954 | while (*p && *p != ')') | |
20955 | { | |
20956 | /* Find the extent of the current argument name. */ | |
20957 | const char *arg_start = p; | |
20958 | ||
20959 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
20960 | p++; | |
20961 | ||
20962 | if (! *p || p == arg_start) | |
4d3c2250 | 20963 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20964 | else |
20965 | { | |
20966 | /* Make sure argv has room for the new argument. */ | |
20967 | if (argc >= argv_size) | |
20968 | { | |
20969 | argv_size *= 2; | |
20970 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
20971 | } | |
20972 | ||
20973 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
20974 | } | |
20975 | ||
20976 | p = consume_improper_spaces (p, body); | |
20977 | ||
20978 | /* Consume the comma, if present. */ | |
20979 | if (*p == ',') | |
20980 | { | |
20981 | p++; | |
20982 | ||
20983 | p = consume_improper_spaces (p, body); | |
20984 | } | |
20985 | } | |
20986 | ||
20987 | if (*p == ')') | |
20988 | { | |
20989 | p++; | |
20990 | ||
20991 | if (*p == ' ') | |
20992 | /* Perfectly formed definition, no complaints. */ | |
20993 | macro_define_function (file, line, name, | |
6e70227d | 20994 | argc, (const char **) argv, |
2e276125 JB |
20995 | p + 1); |
20996 | else if (*p == '\0') | |
20997 | { | |
20998 | /* Complain, but do define it. */ | |
4d3c2250 | 20999 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 21000 | macro_define_function (file, line, name, |
6e70227d | 21001 | argc, (const char **) argv, |
2e276125 JB |
21002 | p); |
21003 | } | |
21004 | else | |
21005 | /* Just complain. */ | |
4d3c2250 | 21006 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21007 | } |
21008 | else | |
21009 | /* Just complain. */ | |
4d3c2250 | 21010 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21011 | |
21012 | xfree (name); | |
21013 | { | |
21014 | int i; | |
21015 | ||
21016 | for (i = 0; i < argc; i++) | |
21017 | xfree (argv[i]); | |
21018 | } | |
21019 | xfree (argv); | |
21020 | } | |
21021 | else | |
4d3c2250 | 21022 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21023 | } |
21024 | ||
cf2c3c16 TT |
21025 | /* Skip some bytes from BYTES according to the form given in FORM. |
21026 | Returns the new pointer. */ | |
2e276125 | 21027 | |
d521ce57 TT |
21028 | static const gdb_byte * |
21029 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
21030 | enum dwarf_form form, |
21031 | unsigned int offset_size, | |
21032 | struct dwarf2_section_info *section) | |
2e276125 | 21033 | { |
cf2c3c16 | 21034 | unsigned int bytes_read; |
2e276125 | 21035 | |
cf2c3c16 | 21036 | switch (form) |
2e276125 | 21037 | { |
cf2c3c16 TT |
21038 | case DW_FORM_data1: |
21039 | case DW_FORM_flag: | |
21040 | ++bytes; | |
21041 | break; | |
21042 | ||
21043 | case DW_FORM_data2: | |
21044 | bytes += 2; | |
21045 | break; | |
21046 | ||
21047 | case DW_FORM_data4: | |
21048 | bytes += 4; | |
21049 | break; | |
21050 | ||
21051 | case DW_FORM_data8: | |
21052 | bytes += 8; | |
21053 | break; | |
21054 | ||
21055 | case DW_FORM_string: | |
21056 | read_direct_string (abfd, bytes, &bytes_read); | |
21057 | bytes += bytes_read; | |
21058 | break; | |
21059 | ||
21060 | case DW_FORM_sec_offset: | |
21061 | case DW_FORM_strp: | |
36586728 | 21062 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
21063 | bytes += offset_size; |
21064 | break; | |
21065 | ||
21066 | case DW_FORM_block: | |
21067 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
21068 | bytes += bytes_read; | |
21069 | break; | |
21070 | ||
21071 | case DW_FORM_block1: | |
21072 | bytes += 1 + read_1_byte (abfd, bytes); | |
21073 | break; | |
21074 | case DW_FORM_block2: | |
21075 | bytes += 2 + read_2_bytes (abfd, bytes); | |
21076 | break; | |
21077 | case DW_FORM_block4: | |
21078 | bytes += 4 + read_4_bytes (abfd, bytes); | |
21079 | break; | |
21080 | ||
21081 | case DW_FORM_sdata: | |
21082 | case DW_FORM_udata: | |
3019eac3 DE |
21083 | case DW_FORM_GNU_addr_index: |
21084 | case DW_FORM_GNU_str_index: | |
d521ce57 | 21085 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
21086 | if (bytes == NULL) |
21087 | { | |
21088 | dwarf2_section_buffer_overflow_complaint (section); | |
21089 | return NULL; | |
21090 | } | |
cf2c3c16 TT |
21091 | break; |
21092 | ||
21093 | default: | |
21094 | { | |
21095 | complain: | |
21096 | complaint (&symfile_complaints, | |
21097 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 21098 | form, get_section_name (section)); |
cf2c3c16 TT |
21099 | return NULL; |
21100 | } | |
2e276125 JB |
21101 | } |
21102 | ||
cf2c3c16 TT |
21103 | return bytes; |
21104 | } | |
757a13d0 | 21105 | |
cf2c3c16 TT |
21106 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
21107 | opcode. Returns an updated pointer to the macro data buffer; or, | |
21108 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 21109 | |
d521ce57 | 21110 | static const gdb_byte * |
cf2c3c16 | 21111 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
21112 | const gdb_byte **opcode_definitions, |
21113 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
21114 | bfd *abfd, |
21115 | unsigned int offset_size, | |
21116 | struct dwarf2_section_info *section) | |
21117 | { | |
21118 | unsigned int bytes_read, i; | |
21119 | unsigned long arg; | |
d521ce57 | 21120 | const gdb_byte *defn; |
2e276125 | 21121 | |
cf2c3c16 | 21122 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 21123 | { |
cf2c3c16 TT |
21124 | complaint (&symfile_complaints, |
21125 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
21126 | opcode); | |
21127 | return NULL; | |
21128 | } | |
2e276125 | 21129 | |
cf2c3c16 TT |
21130 | defn = opcode_definitions[opcode]; |
21131 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
21132 | defn += bytes_read; | |
2e276125 | 21133 | |
cf2c3c16 TT |
21134 | for (i = 0; i < arg; ++i) |
21135 | { | |
f664829e DE |
21136 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
21137 | section); | |
cf2c3c16 TT |
21138 | if (mac_ptr == NULL) |
21139 | { | |
21140 | /* skip_form_bytes already issued the complaint. */ | |
21141 | return NULL; | |
21142 | } | |
21143 | } | |
757a13d0 | 21144 | |
cf2c3c16 TT |
21145 | return mac_ptr; |
21146 | } | |
757a13d0 | 21147 | |
cf2c3c16 TT |
21148 | /* A helper function which parses the header of a macro section. |
21149 | If the macro section is the extended (for now called "GNU") type, | |
21150 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
21151 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 21152 | |
d521ce57 TT |
21153 | static const gdb_byte * |
21154 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 21155 | bfd *abfd, |
d521ce57 | 21156 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
21157 | unsigned int *offset_size, |
21158 | int section_is_gnu) | |
21159 | { | |
21160 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 21161 | |
cf2c3c16 TT |
21162 | if (section_is_gnu) |
21163 | { | |
21164 | unsigned int version, flags; | |
757a13d0 | 21165 | |
cf2c3c16 TT |
21166 | version = read_2_bytes (abfd, mac_ptr); |
21167 | if (version != 4) | |
21168 | { | |
21169 | complaint (&symfile_complaints, | |
21170 | _("unrecognized version `%d' in .debug_macro section"), | |
21171 | version); | |
21172 | return NULL; | |
21173 | } | |
21174 | mac_ptr += 2; | |
757a13d0 | 21175 | |
cf2c3c16 TT |
21176 | flags = read_1_byte (abfd, mac_ptr); |
21177 | ++mac_ptr; | |
21178 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 21179 | |
cf2c3c16 TT |
21180 | if ((flags & 2) != 0) |
21181 | /* We don't need the line table offset. */ | |
21182 | mac_ptr += *offset_size; | |
757a13d0 | 21183 | |
cf2c3c16 TT |
21184 | /* Vendor opcode descriptions. */ |
21185 | if ((flags & 4) != 0) | |
21186 | { | |
21187 | unsigned int i, count; | |
757a13d0 | 21188 | |
cf2c3c16 TT |
21189 | count = read_1_byte (abfd, mac_ptr); |
21190 | ++mac_ptr; | |
21191 | for (i = 0; i < count; ++i) | |
21192 | { | |
21193 | unsigned int opcode, bytes_read; | |
21194 | unsigned long arg; | |
21195 | ||
21196 | opcode = read_1_byte (abfd, mac_ptr); | |
21197 | ++mac_ptr; | |
21198 | opcode_definitions[opcode] = mac_ptr; | |
21199 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21200 | mac_ptr += bytes_read; | |
21201 | mac_ptr += arg; | |
21202 | } | |
757a13d0 | 21203 | } |
cf2c3c16 | 21204 | } |
757a13d0 | 21205 | |
cf2c3c16 TT |
21206 | return mac_ptr; |
21207 | } | |
757a13d0 | 21208 | |
cf2c3c16 | 21209 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 21210 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
21211 | |
21212 | static void | |
d521ce57 TT |
21213 | dwarf_decode_macro_bytes (bfd *abfd, |
21214 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 21215 | struct macro_source_file *current_file, |
43f3e411 | 21216 | struct line_header *lh, |
cf2c3c16 | 21217 | struct dwarf2_section_info *section, |
36586728 | 21218 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 21219 | unsigned int offset_size, |
8fc3fc34 | 21220 | htab_t include_hash) |
cf2c3c16 | 21221 | { |
4d663531 | 21222 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
21223 | enum dwarf_macro_record_type macinfo_type; |
21224 | int at_commandline; | |
d521ce57 | 21225 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 21226 | |
cf2c3c16 TT |
21227 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
21228 | &offset_size, section_is_gnu); | |
21229 | if (mac_ptr == NULL) | |
21230 | { | |
21231 | /* We already issued a complaint. */ | |
21232 | return; | |
21233 | } | |
757a13d0 JK |
21234 | |
21235 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
21236 | GDB is still reading the definitions from command line. First | |
21237 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
21238 | to create CURRENT_FILE for the main source holding also the command line | |
21239 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
21240 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
21241 | ||
21242 | at_commandline = 1; | |
21243 | ||
21244 | do | |
21245 | { | |
21246 | /* Do we at least have room for a macinfo type byte? */ | |
21247 | if (mac_ptr >= mac_end) | |
21248 | { | |
f664829e | 21249 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
21250 | break; |
21251 | } | |
21252 | ||
21253 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
21254 | mac_ptr++; | |
21255 | ||
cf2c3c16 TT |
21256 | /* Note that we rely on the fact that the corresponding GNU and |
21257 | DWARF constants are the same. */ | |
757a13d0 JK |
21258 | switch (macinfo_type) |
21259 | { | |
21260 | /* A zero macinfo type indicates the end of the macro | |
21261 | information. */ | |
21262 | case 0: | |
21263 | break; | |
2e276125 | 21264 | |
cf2c3c16 TT |
21265 | case DW_MACRO_GNU_define: |
21266 | case DW_MACRO_GNU_undef: | |
21267 | case DW_MACRO_GNU_define_indirect: | |
21268 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
21269 | case DW_MACRO_GNU_define_indirect_alt: |
21270 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 21271 | { |
891d2f0b | 21272 | unsigned int bytes_read; |
2e276125 | 21273 | int line; |
d521ce57 | 21274 | const char *body; |
cf2c3c16 | 21275 | int is_define; |
2e276125 | 21276 | |
cf2c3c16 TT |
21277 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
21278 | mac_ptr += bytes_read; | |
21279 | ||
21280 | if (macinfo_type == DW_MACRO_GNU_define | |
21281 | || macinfo_type == DW_MACRO_GNU_undef) | |
21282 | { | |
21283 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
21284 | mac_ptr += bytes_read; | |
21285 | } | |
21286 | else | |
21287 | { | |
21288 | LONGEST str_offset; | |
21289 | ||
21290 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21291 | mac_ptr += offset_size; | |
2e276125 | 21292 | |
36586728 | 21293 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
21294 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
21295 | || section_is_dwz) | |
36586728 TT |
21296 | { |
21297 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21298 | ||
21299 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
21300 | } | |
21301 | else | |
21302 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
21303 | } |
21304 | ||
21305 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
21306 | || macinfo_type == DW_MACRO_GNU_define_indirect |
21307 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 21308 | if (! current_file) |
757a13d0 JK |
21309 | { |
21310 | /* DWARF violation as no main source is present. */ | |
21311 | complaint (&symfile_complaints, | |
21312 | _("debug info with no main source gives macro %s " | |
21313 | "on line %d: %s"), | |
cf2c3c16 TT |
21314 | is_define ? _("definition") : _("undefinition"), |
21315 | line, body); | |
757a13d0 JK |
21316 | break; |
21317 | } | |
3e43a32a MS |
21318 | if ((line == 0 && !at_commandline) |
21319 | || (line != 0 && at_commandline)) | |
4d3c2250 | 21320 | complaint (&symfile_complaints, |
757a13d0 JK |
21321 | _("debug info gives %s macro %s with %s line %d: %s"), |
21322 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 21323 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
21324 | line == 0 ? _("zero") : _("non-zero"), line, body); |
21325 | ||
cf2c3c16 | 21326 | if (is_define) |
757a13d0 | 21327 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
21328 | else |
21329 | { | |
21330 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
21331 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
21332 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
21333 | macro_undef (current_file, line, body); |
21334 | } | |
2e276125 JB |
21335 | } |
21336 | break; | |
21337 | ||
cf2c3c16 | 21338 | case DW_MACRO_GNU_start_file: |
2e276125 | 21339 | { |
891d2f0b | 21340 | unsigned int bytes_read; |
2e276125 JB |
21341 | int line, file; |
21342 | ||
21343 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21344 | mac_ptr += bytes_read; | |
21345 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21346 | mac_ptr += bytes_read; | |
21347 | ||
3e43a32a MS |
21348 | if ((line == 0 && !at_commandline) |
21349 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
21350 | complaint (&symfile_complaints, |
21351 | _("debug info gives source %d included " | |
21352 | "from %s at %s line %d"), | |
21353 | file, at_commandline ? _("command-line") : _("file"), | |
21354 | line == 0 ? _("zero") : _("non-zero"), line); | |
21355 | ||
21356 | if (at_commandline) | |
21357 | { | |
cf2c3c16 TT |
21358 | /* This DW_MACRO_GNU_start_file was executed in the |
21359 | pass one. */ | |
757a13d0 JK |
21360 | at_commandline = 0; |
21361 | } | |
21362 | else | |
43f3e411 | 21363 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
21364 | } |
21365 | break; | |
21366 | ||
cf2c3c16 | 21367 | case DW_MACRO_GNU_end_file: |
2e276125 | 21368 | if (! current_file) |
4d3c2250 | 21369 | complaint (&symfile_complaints, |
3e43a32a MS |
21370 | _("macro debug info has an unmatched " |
21371 | "`close_file' directive")); | |
2e276125 JB |
21372 | else |
21373 | { | |
21374 | current_file = current_file->included_by; | |
21375 | if (! current_file) | |
21376 | { | |
cf2c3c16 | 21377 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
21378 | |
21379 | /* GCC circa March 2002 doesn't produce the zero | |
21380 | type byte marking the end of the compilation | |
21381 | unit. Complain if it's not there, but exit no | |
21382 | matter what. */ | |
21383 | ||
21384 | /* Do we at least have room for a macinfo type byte? */ | |
21385 | if (mac_ptr >= mac_end) | |
21386 | { | |
f664829e | 21387 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
21388 | return; |
21389 | } | |
21390 | ||
21391 | /* We don't increment mac_ptr here, so this is just | |
21392 | a look-ahead. */ | |
21393 | next_type = read_1_byte (abfd, mac_ptr); | |
21394 | if (next_type != 0) | |
4d3c2250 | 21395 | complaint (&symfile_complaints, |
3e43a32a MS |
21396 | _("no terminating 0-type entry for " |
21397 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
21398 | |
21399 | return; | |
21400 | } | |
21401 | } | |
21402 | break; | |
21403 | ||
cf2c3c16 | 21404 | case DW_MACRO_GNU_transparent_include: |
36586728 | 21405 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
21406 | { |
21407 | LONGEST offset; | |
8fc3fc34 | 21408 | void **slot; |
a036ba48 TT |
21409 | bfd *include_bfd = abfd; |
21410 | struct dwarf2_section_info *include_section = section; | |
21411 | struct dwarf2_section_info alt_section; | |
d521ce57 | 21412 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 21413 | int is_dwz = section_is_dwz; |
d521ce57 | 21414 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
21415 | |
21416 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21417 | mac_ptr += offset_size; | |
21418 | ||
a036ba48 TT |
21419 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
21420 | { | |
21421 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21422 | ||
4d663531 | 21423 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 21424 | |
a036ba48 | 21425 | include_section = &dwz->macro; |
a32a8923 | 21426 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
21427 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
21428 | is_dwz = 1; | |
21429 | } | |
21430 | ||
21431 | new_mac_ptr = include_section->buffer + offset; | |
21432 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
21433 | ||
8fc3fc34 TT |
21434 | if (*slot != NULL) |
21435 | { | |
21436 | /* This has actually happened; see | |
21437 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
21438 | complaint (&symfile_complaints, | |
21439 | _("recursive DW_MACRO_GNU_transparent_include in " | |
21440 | ".debug_macro section")); | |
21441 | } | |
21442 | else | |
21443 | { | |
d521ce57 | 21444 | *slot = (void *) new_mac_ptr; |
36586728 | 21445 | |
a036ba48 | 21446 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
43f3e411 | 21447 | include_mac_end, current_file, lh, |
36586728 | 21448 | section, section_is_gnu, is_dwz, |
4d663531 | 21449 | offset_size, include_hash); |
8fc3fc34 | 21450 | |
d521ce57 | 21451 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 21452 | } |
cf2c3c16 TT |
21453 | } |
21454 | break; | |
21455 | ||
2e276125 | 21456 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
21457 | if (!section_is_gnu) |
21458 | { | |
21459 | unsigned int bytes_read; | |
21460 | int constant; | |
2e276125 | 21461 | |
cf2c3c16 TT |
21462 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
21463 | mac_ptr += bytes_read; | |
21464 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21465 | mac_ptr += bytes_read; | |
2e276125 | 21466 | |
cf2c3c16 TT |
21467 | /* We don't recognize any vendor extensions. */ |
21468 | break; | |
21469 | } | |
21470 | /* FALLTHROUGH */ | |
21471 | ||
21472 | default: | |
21473 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 21474 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
21475 | section); |
21476 | if (mac_ptr == NULL) | |
21477 | return; | |
21478 | break; | |
2e276125 | 21479 | } |
757a13d0 | 21480 | } while (macinfo_type != 0); |
2e276125 | 21481 | } |
8e19ed76 | 21482 | |
cf2c3c16 | 21483 | static void |
09262596 | 21484 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 21485 | int section_is_gnu) |
cf2c3c16 | 21486 | { |
bb5ed363 | 21487 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
21488 | struct line_header *lh = cu->line_header; |
21489 | bfd *abfd; | |
d521ce57 | 21490 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
21491 | struct macro_source_file *current_file = 0; |
21492 | enum dwarf_macro_record_type macinfo_type; | |
21493 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 21494 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 TT |
21495 | struct cleanup *cleanup; |
21496 | htab_t include_hash; | |
21497 | void **slot; | |
09262596 DE |
21498 | struct dwarf2_section_info *section; |
21499 | const char *section_name; | |
21500 | ||
21501 | if (cu->dwo_unit != NULL) | |
21502 | { | |
21503 | if (section_is_gnu) | |
21504 | { | |
21505 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
21506 | section_name = ".debug_macro.dwo"; | |
21507 | } | |
21508 | else | |
21509 | { | |
21510 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
21511 | section_name = ".debug_macinfo.dwo"; | |
21512 | } | |
21513 | } | |
21514 | else | |
21515 | { | |
21516 | if (section_is_gnu) | |
21517 | { | |
21518 | section = &dwarf2_per_objfile->macro; | |
21519 | section_name = ".debug_macro"; | |
21520 | } | |
21521 | else | |
21522 | { | |
21523 | section = &dwarf2_per_objfile->macinfo; | |
21524 | section_name = ".debug_macinfo"; | |
21525 | } | |
21526 | } | |
cf2c3c16 | 21527 | |
bb5ed363 | 21528 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
21529 | if (section->buffer == NULL) |
21530 | { | |
fceca515 | 21531 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
21532 | return; |
21533 | } | |
a32a8923 | 21534 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
21535 | |
21536 | /* First pass: Find the name of the base filename. | |
21537 | This filename is needed in order to process all macros whose definition | |
21538 | (or undefinition) comes from the command line. These macros are defined | |
21539 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
21540 | associated to the base file. | |
21541 | ||
21542 | To determine the base file name, we scan the macro definitions until we | |
21543 | reach the first DW_MACINFO_start_file entry. We then initialize | |
21544 | CURRENT_FILE accordingly so that any macro definition found before the | |
21545 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
21546 | ||
21547 | mac_ptr = section->buffer + offset; | |
21548 | mac_end = section->buffer + section->size; | |
21549 | ||
21550 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
21551 | &offset_size, section_is_gnu); | |
21552 | if (mac_ptr == NULL) | |
21553 | { | |
21554 | /* We already issued a complaint. */ | |
21555 | return; | |
21556 | } | |
21557 | ||
21558 | do | |
21559 | { | |
21560 | /* Do we at least have room for a macinfo type byte? */ | |
21561 | if (mac_ptr >= mac_end) | |
21562 | { | |
21563 | /* Complaint is printed during the second pass as GDB will probably | |
21564 | stop the first pass earlier upon finding | |
21565 | DW_MACINFO_start_file. */ | |
21566 | break; | |
21567 | } | |
21568 | ||
21569 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
21570 | mac_ptr++; | |
21571 | ||
21572 | /* Note that we rely on the fact that the corresponding GNU and | |
21573 | DWARF constants are the same. */ | |
21574 | switch (macinfo_type) | |
21575 | { | |
21576 | /* A zero macinfo type indicates the end of the macro | |
21577 | information. */ | |
21578 | case 0: | |
21579 | break; | |
21580 | ||
21581 | case DW_MACRO_GNU_define: | |
21582 | case DW_MACRO_GNU_undef: | |
21583 | /* Only skip the data by MAC_PTR. */ | |
21584 | { | |
21585 | unsigned int bytes_read; | |
21586 | ||
21587 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21588 | mac_ptr += bytes_read; | |
21589 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21590 | mac_ptr += bytes_read; | |
21591 | } | |
21592 | break; | |
21593 | ||
21594 | case DW_MACRO_GNU_start_file: | |
21595 | { | |
21596 | unsigned int bytes_read; | |
21597 | int line, file; | |
21598 | ||
21599 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21600 | mac_ptr += bytes_read; | |
21601 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21602 | mac_ptr += bytes_read; | |
21603 | ||
43f3e411 | 21604 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
21605 | } |
21606 | break; | |
21607 | ||
21608 | case DW_MACRO_GNU_end_file: | |
21609 | /* No data to skip by MAC_PTR. */ | |
21610 | break; | |
21611 | ||
21612 | case DW_MACRO_GNU_define_indirect: | |
21613 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
21614 | case DW_MACRO_GNU_define_indirect_alt: |
21615 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
21616 | { |
21617 | unsigned int bytes_read; | |
21618 | ||
21619 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21620 | mac_ptr += bytes_read; | |
21621 | mac_ptr += offset_size; | |
21622 | } | |
21623 | break; | |
21624 | ||
21625 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 21626 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
21627 | /* Note that, according to the spec, a transparent include |
21628 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
21629 | skip this opcode. */ | |
21630 | mac_ptr += offset_size; | |
21631 | break; | |
21632 | ||
21633 | case DW_MACINFO_vendor_ext: | |
21634 | /* Only skip the data by MAC_PTR. */ | |
21635 | if (!section_is_gnu) | |
21636 | { | |
21637 | unsigned int bytes_read; | |
21638 | ||
21639 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21640 | mac_ptr += bytes_read; | |
21641 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21642 | mac_ptr += bytes_read; | |
21643 | } | |
21644 | /* FALLTHROUGH */ | |
21645 | ||
21646 | default: | |
21647 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 21648 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
21649 | section); |
21650 | if (mac_ptr == NULL) | |
21651 | return; | |
21652 | break; | |
21653 | } | |
21654 | } while (macinfo_type != 0 && current_file == NULL); | |
21655 | ||
21656 | /* Second pass: Process all entries. | |
21657 | ||
21658 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
21659 | command-line macro definitions/undefinitions. This flag is unset when we | |
21660 | reach the first DW_MACINFO_start_file entry. */ | |
21661 | ||
8fc3fc34 TT |
21662 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
21663 | NULL, xcalloc, xfree); | |
21664 | cleanup = make_cleanup_htab_delete (include_hash); | |
21665 | mac_ptr = section->buffer + offset; | |
21666 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
d521ce57 | 21667 | *slot = (void *) mac_ptr; |
8fc3fc34 | 21668 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
43f3e411 | 21669 | current_file, lh, section, |
4d663531 | 21670 | section_is_gnu, 0, offset_size, include_hash); |
8fc3fc34 | 21671 | do_cleanups (cleanup); |
cf2c3c16 TT |
21672 | } |
21673 | ||
8e19ed76 | 21674 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 21675 | if so return true else false. */ |
380bca97 | 21676 | |
8e19ed76 | 21677 | static int |
6e5a29e1 | 21678 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
21679 | { |
21680 | return (attr == NULL ? 0 : | |
21681 | attr->form == DW_FORM_block1 | |
21682 | || attr->form == DW_FORM_block2 | |
21683 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
21684 | || attr->form == DW_FORM_block |
21685 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 21686 | } |
4c2df51b | 21687 | |
c6a0999f JB |
21688 | /* Return non-zero if ATTR's value is a section offset --- classes |
21689 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
21690 | You may use DW_UNSND (attr) to retrieve such offsets. | |
21691 | ||
21692 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
21693 | may have a value that belongs to more than one of these classes; it | |
21694 | would be ambiguous if we did, because we use the same forms for all | |
21695 | of them. */ | |
380bca97 | 21696 | |
3690dd37 | 21697 | static int |
6e5a29e1 | 21698 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
21699 | { |
21700 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
21701 | || attr->form == DW_FORM_data8 |
21702 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
21703 | } |
21704 | ||
3690dd37 JB |
21705 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
21706 | zero otherwise. When this function returns true, you can apply | |
21707 | dwarf2_get_attr_constant_value to it. | |
21708 | ||
21709 | However, note that for some attributes you must check | |
21710 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
21711 | and DW_FORM_data8 are members of both the constant class, and of | |
21712 | the classes that contain offsets into other debug sections | |
21713 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
21714 | that, if an attribute's can be either a constant or one of the | |
21715 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
21716 | taken as section offsets, not constants. */ | |
380bca97 | 21717 | |
3690dd37 | 21718 | static int |
6e5a29e1 | 21719 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
21720 | { |
21721 | switch (attr->form) | |
21722 | { | |
21723 | case DW_FORM_sdata: | |
21724 | case DW_FORM_udata: | |
21725 | case DW_FORM_data1: | |
21726 | case DW_FORM_data2: | |
21727 | case DW_FORM_data4: | |
21728 | case DW_FORM_data8: | |
21729 | return 1; | |
21730 | default: | |
21731 | return 0; | |
21732 | } | |
21733 | } | |
21734 | ||
7771576e SA |
21735 | |
21736 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
21737 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
21738 | ||
21739 | static int | |
6e5a29e1 | 21740 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
21741 | { |
21742 | switch (attr->form) | |
21743 | { | |
21744 | case DW_FORM_ref_addr: | |
21745 | case DW_FORM_ref1: | |
21746 | case DW_FORM_ref2: | |
21747 | case DW_FORM_ref4: | |
21748 | case DW_FORM_ref8: | |
21749 | case DW_FORM_ref_udata: | |
21750 | case DW_FORM_GNU_ref_alt: | |
21751 | return 1; | |
21752 | default: | |
21753 | return 0; | |
21754 | } | |
21755 | } | |
21756 | ||
3019eac3 DE |
21757 | /* Return the .debug_loc section to use for CU. |
21758 | For DWO files use .debug_loc.dwo. */ | |
21759 | ||
21760 | static struct dwarf2_section_info * | |
21761 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
21762 | { | |
21763 | if (cu->dwo_unit) | |
21764 | return &cu->dwo_unit->dwo_file->sections.loc; | |
21765 | return &dwarf2_per_objfile->loc; | |
21766 | } | |
21767 | ||
8cf6f0b1 TT |
21768 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
21769 | ||
21770 | static void | |
21771 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
21772 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 21773 | const struct attribute *attr) |
8cf6f0b1 | 21774 | { |
3019eac3 DE |
21775 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
21776 | ||
21777 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
21778 | |
21779 | baton->per_cu = cu->per_cu; | |
21780 | gdb_assert (baton->per_cu); | |
21781 | /* We don't know how long the location list is, but make sure we | |
21782 | don't run off the edge of the section. */ | |
3019eac3 DE |
21783 | baton->size = section->size - DW_UNSND (attr); |
21784 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 21785 | baton->base_address = cu->base_address; |
f664829e | 21786 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
21787 | } |
21788 | ||
4c2df51b | 21789 | static void |
ff39bb5e | 21790 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 21791 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 21792 | { |
bb5ed363 | 21793 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 21794 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 21795 | |
3690dd37 | 21796 | if (attr_form_is_section_offset (attr) |
3019eac3 | 21797 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
21798 | the section. If so, fall through to the complaint in the |
21799 | other branch. */ | |
3019eac3 | 21800 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 21801 | { |
0d53c4c4 | 21802 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 21803 | |
bb5ed363 | 21804 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 21805 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 21806 | |
8cf6f0b1 | 21807 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 21808 | |
d00adf39 | 21809 | if (cu->base_known == 0) |
0d53c4c4 | 21810 | complaint (&symfile_complaints, |
3e43a32a MS |
21811 | _("Location list used without " |
21812 | "specifying the CU base address.")); | |
4c2df51b | 21813 | |
f1e6e072 TT |
21814 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
21815 | ? dwarf2_loclist_block_index | |
21816 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
21817 | SYMBOL_LOCATION_BATON (sym) = baton; |
21818 | } | |
21819 | else | |
21820 | { | |
21821 | struct dwarf2_locexpr_baton *baton; | |
21822 | ||
bb5ed363 | 21823 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 21824 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
21825 | baton->per_cu = cu->per_cu; |
21826 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
21827 | |
21828 | if (attr_form_is_block (attr)) | |
21829 | { | |
21830 | /* Note that we're just copying the block's data pointer | |
21831 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
21832 | info_buffer for SYM's objfile; right now we never release |
21833 | that buffer, but when we do clean up properly this may | |
21834 | need to change. */ | |
0d53c4c4 DJ |
21835 | baton->size = DW_BLOCK (attr)->size; |
21836 | baton->data = DW_BLOCK (attr)->data; | |
21837 | } | |
21838 | else | |
21839 | { | |
21840 | dwarf2_invalid_attrib_class_complaint ("location description", | |
21841 | SYMBOL_NATURAL_NAME (sym)); | |
21842 | baton->size = 0; | |
0d53c4c4 | 21843 | } |
6e70227d | 21844 | |
f1e6e072 TT |
21845 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
21846 | ? dwarf2_locexpr_block_index | |
21847 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
21848 | SYMBOL_LOCATION_BATON (sym) = baton; |
21849 | } | |
4c2df51b | 21850 | } |
6502dd73 | 21851 | |
9aa1f1e3 TT |
21852 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
21853 | came from a separate debuginfo file, then the master objfile is | |
21854 | returned. */ | |
ae0d2f24 UW |
21855 | |
21856 | struct objfile * | |
21857 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
21858 | { | |
9291a0cd | 21859 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
21860 | |
21861 | /* Return the master objfile, so that we can report and look up the | |
21862 | correct file containing this variable. */ | |
21863 | if (objfile->separate_debug_objfile_backlink) | |
21864 | objfile = objfile->separate_debug_objfile_backlink; | |
21865 | ||
21866 | return objfile; | |
21867 | } | |
21868 | ||
96408a79 SA |
21869 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
21870 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
21871 | CU_HEADERP first. */ | |
21872 | ||
21873 | static const struct comp_unit_head * | |
21874 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
21875 | struct dwarf2_per_cu_data *per_cu) | |
21876 | { | |
d521ce57 | 21877 | const gdb_byte *info_ptr; |
96408a79 SA |
21878 | |
21879 | if (per_cu->cu) | |
21880 | return &per_cu->cu->header; | |
21881 | ||
8a0459fd | 21882 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
21883 | |
21884 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 21885 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
21886 | |
21887 | return cu_headerp; | |
21888 | } | |
21889 | ||
ae0d2f24 UW |
21890 | /* Return the address size given in the compilation unit header for CU. */ |
21891 | ||
98714339 | 21892 | int |
ae0d2f24 UW |
21893 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
21894 | { | |
96408a79 SA |
21895 | struct comp_unit_head cu_header_local; |
21896 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 21897 | |
96408a79 SA |
21898 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
21899 | ||
21900 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
21901 | } |
21902 | ||
9eae7c52 TT |
21903 | /* Return the offset size given in the compilation unit header for CU. */ |
21904 | ||
21905 | int | |
21906 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
21907 | { | |
96408a79 SA |
21908 | struct comp_unit_head cu_header_local; |
21909 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 21910 | |
96408a79 SA |
21911 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
21912 | ||
21913 | return cu_headerp->offset_size; | |
21914 | } | |
21915 | ||
21916 | /* See its dwarf2loc.h declaration. */ | |
21917 | ||
21918 | int | |
21919 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
21920 | { | |
21921 | struct comp_unit_head cu_header_local; | |
21922 | const struct comp_unit_head *cu_headerp; | |
21923 | ||
21924 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
21925 | ||
21926 | if (cu_headerp->version == 2) | |
21927 | return cu_headerp->addr_size; | |
21928 | else | |
21929 | return cu_headerp->offset_size; | |
181cebd4 JK |
21930 | } |
21931 | ||
9aa1f1e3 TT |
21932 | /* Return the text offset of the CU. The returned offset comes from |
21933 | this CU's objfile. If this objfile came from a separate debuginfo | |
21934 | file, then the offset may be different from the corresponding | |
21935 | offset in the parent objfile. */ | |
21936 | ||
21937 | CORE_ADDR | |
21938 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
21939 | { | |
bb3fa9d0 | 21940 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
21941 | |
21942 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
21943 | } | |
21944 | ||
348e048f DE |
21945 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
21946 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
21947 | |
21948 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 21949 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 21950 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
21951 | struct objfile *objfile) |
21952 | { | |
21953 | struct dwarf2_per_cu_data *this_cu; | |
21954 | int low, high; | |
36586728 | 21955 | const sect_offset *cu_off; |
ae038cb0 | 21956 | |
ae038cb0 DJ |
21957 | low = 0; |
21958 | high = dwarf2_per_objfile->n_comp_units - 1; | |
21959 | while (high > low) | |
21960 | { | |
36586728 | 21961 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 21962 | int mid = low + (high - low) / 2; |
9a619af0 | 21963 | |
36586728 TT |
21964 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
21965 | cu_off = &mid_cu->offset; | |
21966 | if (mid_cu->is_dwz > offset_in_dwz | |
21967 | || (mid_cu->is_dwz == offset_in_dwz | |
21968 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
21969 | high = mid; |
21970 | else | |
21971 | low = mid + 1; | |
21972 | } | |
21973 | gdb_assert (low == high); | |
36586728 TT |
21974 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
21975 | cu_off = &this_cu->offset; | |
21976 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 21977 | { |
36586728 | 21978 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
21979 | error (_("Dwarf Error: could not find partial DIE containing " |
21980 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 21981 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 21982 | |
b64f50a1 JK |
21983 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
21984 | <= offset.sect_off); | |
ae038cb0 DJ |
21985 | return dwarf2_per_objfile->all_comp_units[low-1]; |
21986 | } | |
21987 | else | |
21988 | { | |
21989 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
21990 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
21991 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
21992 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
21993 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
21994 | return this_cu; |
21995 | } | |
21996 | } | |
21997 | ||
23745b47 | 21998 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 21999 | |
9816fde3 | 22000 | static void |
23745b47 | 22001 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 22002 | { |
9816fde3 | 22003 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
22004 | per_cu->cu = cu; |
22005 | cu->per_cu = per_cu; | |
22006 | cu->objfile = per_cu->objfile; | |
93311388 | 22007 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
22008 | } |
22009 | ||
22010 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
22011 | ||
22012 | static void | |
95554aad TT |
22013 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
22014 | enum language pretend_language) | |
9816fde3 JK |
22015 | { |
22016 | struct attribute *attr; | |
22017 | ||
22018 | /* Set the language we're debugging. */ | |
22019 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
22020 | if (attr) | |
22021 | set_cu_language (DW_UNSND (attr), cu); | |
22022 | else | |
9cded63f | 22023 | { |
95554aad | 22024 | cu->language = pretend_language; |
9cded63f TT |
22025 | cu->language_defn = language_def (cu->language); |
22026 | } | |
dee91e82 DE |
22027 | |
22028 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
22029 | if (attr) | |
22030 | cu->producer = DW_STRING (attr); | |
93311388 DE |
22031 | } |
22032 | ||
ae038cb0 DJ |
22033 | /* Release one cached compilation unit, CU. We unlink it from the tree |
22034 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
22035 | the caller is responsible for that. |
22036 | NOTE: DATA is a void * because this function is also used as a | |
22037 | cleanup routine. */ | |
ae038cb0 DJ |
22038 | |
22039 | static void | |
68dc6402 | 22040 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
22041 | { |
22042 | struct dwarf2_cu *cu = data; | |
22043 | ||
23745b47 DE |
22044 | gdb_assert (cu->per_cu != NULL); |
22045 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
22046 | cu->per_cu = NULL; |
22047 | ||
22048 | obstack_free (&cu->comp_unit_obstack, NULL); | |
22049 | ||
22050 | xfree (cu); | |
22051 | } | |
22052 | ||
72bf9492 | 22053 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 22054 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 22055 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
22056 | |
22057 | static void | |
22058 | free_stack_comp_unit (void *data) | |
22059 | { | |
22060 | struct dwarf2_cu *cu = data; | |
22061 | ||
23745b47 DE |
22062 | gdb_assert (cu->per_cu != NULL); |
22063 | cu->per_cu->cu = NULL; | |
22064 | cu->per_cu = NULL; | |
22065 | ||
72bf9492 DJ |
22066 | obstack_free (&cu->comp_unit_obstack, NULL); |
22067 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
22068 | } |
22069 | ||
22070 | /* Free all cached compilation units. */ | |
22071 | ||
22072 | static void | |
22073 | free_cached_comp_units (void *data) | |
22074 | { | |
22075 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22076 | ||
22077 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22078 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22079 | while (per_cu != NULL) | |
22080 | { | |
22081 | struct dwarf2_per_cu_data *next_cu; | |
22082 | ||
22083 | next_cu = per_cu->cu->read_in_chain; | |
22084 | ||
68dc6402 | 22085 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
22086 | *last_chain = next_cu; |
22087 | ||
22088 | per_cu = next_cu; | |
22089 | } | |
22090 | } | |
22091 | ||
22092 | /* Increase the age counter on each cached compilation unit, and free | |
22093 | any that are too old. */ | |
22094 | ||
22095 | static void | |
22096 | age_cached_comp_units (void) | |
22097 | { | |
22098 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22099 | ||
22100 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
22101 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22102 | while (per_cu != NULL) | |
22103 | { | |
22104 | per_cu->cu->last_used ++; | |
b4f54984 | 22105 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
22106 | dwarf2_mark (per_cu->cu); |
22107 | per_cu = per_cu->cu->read_in_chain; | |
22108 | } | |
22109 | ||
22110 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22111 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22112 | while (per_cu != NULL) | |
22113 | { | |
22114 | struct dwarf2_per_cu_data *next_cu; | |
22115 | ||
22116 | next_cu = per_cu->cu->read_in_chain; | |
22117 | ||
22118 | if (!per_cu->cu->mark) | |
22119 | { | |
68dc6402 | 22120 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
22121 | *last_chain = next_cu; |
22122 | } | |
22123 | else | |
22124 | last_chain = &per_cu->cu->read_in_chain; | |
22125 | ||
22126 | per_cu = next_cu; | |
22127 | } | |
22128 | } | |
22129 | ||
22130 | /* Remove a single compilation unit from the cache. */ | |
22131 | ||
22132 | static void | |
dee91e82 | 22133 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
22134 | { |
22135 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22136 | ||
22137 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22138 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22139 | while (per_cu != NULL) | |
22140 | { | |
22141 | struct dwarf2_per_cu_data *next_cu; | |
22142 | ||
22143 | next_cu = per_cu->cu->read_in_chain; | |
22144 | ||
dee91e82 | 22145 | if (per_cu == target_per_cu) |
ae038cb0 | 22146 | { |
68dc6402 | 22147 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 22148 | per_cu->cu = NULL; |
ae038cb0 DJ |
22149 | *last_chain = next_cu; |
22150 | break; | |
22151 | } | |
22152 | else | |
22153 | last_chain = &per_cu->cu->read_in_chain; | |
22154 | ||
22155 | per_cu = next_cu; | |
22156 | } | |
22157 | } | |
22158 | ||
fe3e1990 DJ |
22159 | /* Release all extra memory associated with OBJFILE. */ |
22160 | ||
22161 | void | |
22162 | dwarf2_free_objfile (struct objfile *objfile) | |
22163 | { | |
22164 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
22165 | ||
22166 | if (dwarf2_per_objfile == NULL) | |
22167 | return; | |
22168 | ||
22169 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
22170 | free_cached_comp_units (NULL); | |
22171 | ||
7b9f3c50 DE |
22172 | if (dwarf2_per_objfile->quick_file_names_table) |
22173 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 22174 | |
527f3840 JK |
22175 | if (dwarf2_per_objfile->line_header_hash) |
22176 | htab_delete (dwarf2_per_objfile->line_header_hash); | |
22177 | ||
fe3e1990 DJ |
22178 | /* Everything else should be on the objfile obstack. */ |
22179 | } | |
22180 | ||
dee91e82 DE |
22181 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
22182 | We store these in a hash table separate from the DIEs, and preserve them | |
22183 | when the DIEs are flushed out of cache. | |
22184 | ||
22185 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 22186 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
22187 | or the type may come from a DWO file. Furthermore, while it's more logical |
22188 | to use per_cu->section+offset, with Fission the section with the data is in | |
22189 | the DWO file but we don't know that section at the point we need it. | |
22190 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
22191 | because we can enter the lookup routine, get_die_type_at_offset, from | |
22192 | outside this file, and thus won't necessarily have PER_CU->cu. | |
22193 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 22194 | |
dee91e82 | 22195 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 22196 | { |
dee91e82 | 22197 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 22198 | sect_offset offset; |
1c379e20 DJ |
22199 | struct type *type; |
22200 | }; | |
22201 | ||
dee91e82 | 22202 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22203 | |
22204 | static hashval_t | |
dee91e82 | 22205 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 22206 | { |
dee91e82 | 22207 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 22208 | |
dee91e82 | 22209 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
22210 | } |
22211 | ||
dee91e82 | 22212 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22213 | |
22214 | static int | |
dee91e82 | 22215 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 22216 | { |
dee91e82 DE |
22217 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
22218 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 22219 | |
dee91e82 DE |
22220 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
22221 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
22222 | } |
22223 | ||
22224 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
22225 | table if necessary. For convenience, return TYPE. |
22226 | ||
22227 | The DIEs reading must have careful ordering to: | |
22228 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
22229 | reading current DIE. | |
22230 | * Not trying to dereference contents of still incompletely read in types | |
22231 | while reading in other DIEs. | |
22232 | * Enable referencing still incompletely read in types just by a pointer to | |
22233 | the type without accessing its fields. | |
22234 | ||
22235 | Therefore caller should follow these rules: | |
22236 | * Try to fetch any prerequisite types we may need to build this DIE type | |
22237 | before building the type and calling set_die_type. | |
e71ec853 | 22238 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
22239 | possible before fetching more types to complete the current type. |
22240 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 22241 | |
f792889a | 22242 | static struct type * |
1c379e20 DJ |
22243 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
22244 | { | |
dee91e82 | 22245 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 22246 | struct objfile *objfile = cu->objfile; |
3cdcd0ce JB |
22247 | struct attribute *attr; |
22248 | struct dynamic_prop prop; | |
1c379e20 | 22249 | |
b4ba55a1 JB |
22250 | /* For Ada types, make sure that the gnat-specific data is always |
22251 | initialized (if not already set). There are a few types where | |
22252 | we should not be doing so, because the type-specific area is | |
22253 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
22254 | where the type-specific area is used to store the floatformat). | |
22255 | But this is not a problem, because the gnat-specific information | |
22256 | is actually not needed for these types. */ | |
22257 | if (need_gnat_info (cu) | |
22258 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
22259 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
22260 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
22261 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
22262 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
22263 | && !HAVE_GNAT_AUX_INFO (type)) |
22264 | INIT_GNAT_SPECIFIC (type); | |
22265 | ||
3cdcd0ce JB |
22266 | /* Read DW_AT_data_location and set in type. */ |
22267 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
22268 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
93a8e227 | 22269 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type, objfile); |
3cdcd0ce | 22270 | |
dee91e82 | 22271 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22272 | { |
dee91e82 DE |
22273 | dwarf2_per_objfile->die_type_hash = |
22274 | htab_create_alloc_ex (127, | |
22275 | per_cu_offset_and_type_hash, | |
22276 | per_cu_offset_and_type_eq, | |
22277 | NULL, | |
22278 | &objfile->objfile_obstack, | |
22279 | hashtab_obstack_allocate, | |
22280 | dummy_obstack_deallocate); | |
f792889a | 22281 | } |
1c379e20 | 22282 | |
dee91e82 | 22283 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
22284 | ofs.offset = die->offset; |
22285 | ofs.type = type; | |
dee91e82 DE |
22286 | slot = (struct dwarf2_per_cu_offset_and_type **) |
22287 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
22288 | if (*slot) |
22289 | complaint (&symfile_complaints, | |
22290 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 22291 | die->offset.sect_off); |
673bfd45 | 22292 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 22293 | **slot = ofs; |
f792889a | 22294 | return type; |
1c379e20 DJ |
22295 | } |
22296 | ||
02142a6c DE |
22297 | /* Look up the type for the die at OFFSET in PER_CU in die_type_hash, |
22298 | or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
22299 | |
22300 | static struct type * | |
b64f50a1 | 22301 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 22302 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 22303 | { |
dee91e82 | 22304 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 22305 | |
dee91e82 | 22306 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22307 | return NULL; |
1c379e20 | 22308 | |
dee91e82 | 22309 | ofs.per_cu = per_cu; |
673bfd45 | 22310 | ofs.offset = offset; |
dee91e82 | 22311 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
22312 | if (slot) |
22313 | return slot->type; | |
22314 | else | |
22315 | return NULL; | |
22316 | } | |
22317 | ||
02142a6c | 22318 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
22319 | or return NULL if DIE does not have a saved type. */ |
22320 | ||
22321 | static struct type * | |
22322 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
22323 | { | |
22324 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
22325 | } | |
22326 | ||
10b3939b DJ |
22327 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
22328 | ||
22329 | static void | |
22330 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
22331 | struct dwarf2_per_cu_data *ref_per_cu) | |
22332 | { | |
22333 | void **slot; | |
22334 | ||
22335 | if (cu->dependencies == NULL) | |
22336 | cu->dependencies | |
22337 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
22338 | NULL, &cu->comp_unit_obstack, | |
22339 | hashtab_obstack_allocate, | |
22340 | dummy_obstack_deallocate); | |
22341 | ||
22342 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
22343 | if (*slot == NULL) | |
22344 | *slot = ref_per_cu; | |
22345 | } | |
1c379e20 | 22346 | |
f504f079 DE |
22347 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
22348 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
22349 | cache that we must keep because we are keeping CU. */ |
22350 | ||
10b3939b DJ |
22351 | static int |
22352 | dwarf2_mark_helper (void **slot, void *data) | |
22353 | { | |
22354 | struct dwarf2_per_cu_data *per_cu; | |
22355 | ||
22356 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
22357 | |
22358 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
22359 | reading of the chain. As such dependencies remain valid it is not much | |
22360 | useful to track and undo them during QUIT cleanups. */ | |
22361 | if (per_cu->cu == NULL) | |
22362 | return 1; | |
22363 | ||
10b3939b DJ |
22364 | if (per_cu->cu->mark) |
22365 | return 1; | |
22366 | per_cu->cu->mark = 1; | |
22367 | ||
22368 | if (per_cu->cu->dependencies != NULL) | |
22369 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
22370 | ||
22371 | return 1; | |
22372 | } | |
22373 | ||
f504f079 DE |
22374 | /* Set the mark field in CU and in every other compilation unit in the |
22375 | cache that we must keep because we are keeping CU. */ | |
22376 | ||
ae038cb0 DJ |
22377 | static void |
22378 | dwarf2_mark (struct dwarf2_cu *cu) | |
22379 | { | |
22380 | if (cu->mark) | |
22381 | return; | |
22382 | cu->mark = 1; | |
10b3939b DJ |
22383 | if (cu->dependencies != NULL) |
22384 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
22385 | } |
22386 | ||
22387 | static void | |
22388 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
22389 | { | |
22390 | while (per_cu) | |
22391 | { | |
22392 | per_cu->cu->mark = 0; | |
22393 | per_cu = per_cu->cu->read_in_chain; | |
22394 | } | |
72bf9492 DJ |
22395 | } |
22396 | ||
72bf9492 DJ |
22397 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
22398 | is its offset in .debug_info for this objfile. */ | |
22399 | ||
22400 | static hashval_t | |
22401 | partial_die_hash (const void *item) | |
22402 | { | |
22403 | const struct partial_die_info *part_die = item; | |
9a619af0 | 22404 | |
b64f50a1 | 22405 | return part_die->offset.sect_off; |
72bf9492 DJ |
22406 | } |
22407 | ||
22408 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
22409 | are equal if they have the same offset. */ | |
22410 | ||
22411 | static int | |
22412 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
22413 | { | |
22414 | const struct partial_die_info *part_die_lhs = item_lhs; | |
22415 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 22416 | |
b64f50a1 | 22417 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
22418 | } |
22419 | ||
b4f54984 DE |
22420 | static struct cmd_list_element *set_dwarf_cmdlist; |
22421 | static struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
22422 | |
22423 | static void | |
b4f54984 | 22424 | set_dwarf_cmd (char *args, int from_tty) |
ae038cb0 | 22425 | { |
b4f54984 | 22426 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 22427 | gdb_stdout); |
ae038cb0 DJ |
22428 | } |
22429 | ||
22430 | static void | |
b4f54984 | 22431 | show_dwarf_cmd (char *args, int from_tty) |
6e70227d | 22432 | { |
b4f54984 | 22433 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
22434 | } |
22435 | ||
4bf44c1c | 22436 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
22437 | |
22438 | static void | |
c1bd65d0 | 22439 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
22440 | { |
22441 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 22442 | int ix; |
8b70b953 | 22443 | |
626f2d1c TT |
22444 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
22445 | cleaning up. */ | |
22446 | dwarf2_per_objfile = NULL; | |
22447 | ||
59b0c7c1 JB |
22448 | for (ix = 0; ix < data->n_comp_units; ++ix) |
22449 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 22450 | |
59b0c7c1 | 22451 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 22452 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
22453 | data->all_type_units[ix]->per_cu.imported_symtabs); |
22454 | xfree (data->all_type_units); | |
95554aad | 22455 | |
8b70b953 | 22456 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
22457 | |
22458 | if (data->dwo_files) | |
22459 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
22460 | if (data->dwp_file) |
22461 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
22462 | |
22463 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
22464 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
22465 | } |
22466 | ||
22467 | \f | |
ae2de4f8 | 22468 | /* The "save gdb-index" command. */ |
9291a0cd TT |
22469 | |
22470 | /* The contents of the hash table we create when building the string | |
22471 | table. */ | |
22472 | struct strtab_entry | |
22473 | { | |
22474 | offset_type offset; | |
22475 | const char *str; | |
22476 | }; | |
22477 | ||
559a7a62 JK |
22478 | /* Hash function for a strtab_entry. |
22479 | ||
22480 | Function is used only during write_hash_table so no index format backward | |
22481 | compatibility is needed. */ | |
b89be57b | 22482 | |
9291a0cd TT |
22483 | static hashval_t |
22484 | hash_strtab_entry (const void *e) | |
22485 | { | |
22486 | const struct strtab_entry *entry = e; | |
559a7a62 | 22487 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
22488 | } |
22489 | ||
22490 | /* Equality function for a strtab_entry. */ | |
b89be57b | 22491 | |
9291a0cd TT |
22492 | static int |
22493 | eq_strtab_entry (const void *a, const void *b) | |
22494 | { | |
22495 | const struct strtab_entry *ea = a; | |
22496 | const struct strtab_entry *eb = b; | |
22497 | return !strcmp (ea->str, eb->str); | |
22498 | } | |
22499 | ||
22500 | /* Create a strtab_entry hash table. */ | |
b89be57b | 22501 | |
9291a0cd TT |
22502 | static htab_t |
22503 | create_strtab (void) | |
22504 | { | |
22505 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
22506 | xfree, xcalloc, xfree); | |
22507 | } | |
22508 | ||
22509 | /* Add a string to the constant pool. Return the string's offset in | |
22510 | host order. */ | |
b89be57b | 22511 | |
9291a0cd TT |
22512 | static offset_type |
22513 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
22514 | { | |
22515 | void **slot; | |
22516 | struct strtab_entry entry; | |
22517 | struct strtab_entry *result; | |
22518 | ||
22519 | entry.str = str; | |
22520 | slot = htab_find_slot (table, &entry, INSERT); | |
22521 | if (*slot) | |
22522 | result = *slot; | |
22523 | else | |
22524 | { | |
22525 | result = XNEW (struct strtab_entry); | |
22526 | result->offset = obstack_object_size (cpool); | |
22527 | result->str = str; | |
22528 | obstack_grow_str0 (cpool, str); | |
22529 | *slot = result; | |
22530 | } | |
22531 | return result->offset; | |
22532 | } | |
22533 | ||
22534 | /* An entry in the symbol table. */ | |
22535 | struct symtab_index_entry | |
22536 | { | |
22537 | /* The name of the symbol. */ | |
22538 | const char *name; | |
22539 | /* The offset of the name in the constant pool. */ | |
22540 | offset_type index_offset; | |
22541 | /* A sorted vector of the indices of all the CUs that hold an object | |
22542 | of this name. */ | |
22543 | VEC (offset_type) *cu_indices; | |
22544 | }; | |
22545 | ||
22546 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
22547 | struct mapped_symtab | |
22548 | { | |
22549 | offset_type n_elements; | |
22550 | offset_type size; | |
22551 | struct symtab_index_entry **data; | |
22552 | }; | |
22553 | ||
22554 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 22555 | |
9291a0cd TT |
22556 | static hashval_t |
22557 | hash_symtab_entry (const void *e) | |
22558 | { | |
22559 | const struct symtab_index_entry *entry = e; | |
22560 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
22561 | sizeof (offset_type) * VEC_length (offset_type, | |
22562 | entry->cu_indices), | |
22563 | 0); | |
22564 | } | |
22565 | ||
22566 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 22567 | |
9291a0cd TT |
22568 | static int |
22569 | eq_symtab_entry (const void *a, const void *b) | |
22570 | { | |
22571 | const struct symtab_index_entry *ea = a; | |
22572 | const struct symtab_index_entry *eb = b; | |
22573 | int len = VEC_length (offset_type, ea->cu_indices); | |
22574 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
22575 | return 0; | |
22576 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
22577 | VEC_address (offset_type, eb->cu_indices), | |
22578 | sizeof (offset_type) * len); | |
22579 | } | |
22580 | ||
22581 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 22582 | |
9291a0cd TT |
22583 | static void |
22584 | delete_symtab_entry (void *p) | |
22585 | { | |
22586 | struct symtab_index_entry *entry = p; | |
22587 | VEC_free (offset_type, entry->cu_indices); | |
22588 | xfree (entry); | |
22589 | } | |
22590 | ||
22591 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 22592 | |
9291a0cd | 22593 | static htab_t |
3876f04e | 22594 | create_symbol_hash_table (void) |
9291a0cd TT |
22595 | { |
22596 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
22597 | delete_symtab_entry, xcalloc, xfree); | |
22598 | } | |
22599 | ||
22600 | /* Create a new mapped symtab object. */ | |
b89be57b | 22601 | |
9291a0cd TT |
22602 | static struct mapped_symtab * |
22603 | create_mapped_symtab (void) | |
22604 | { | |
22605 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
22606 | symtab->n_elements = 0; | |
22607 | symtab->size = 1024; | |
22608 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
22609 | return symtab; | |
22610 | } | |
22611 | ||
22612 | /* Destroy a mapped_symtab. */ | |
b89be57b | 22613 | |
9291a0cd TT |
22614 | static void |
22615 | cleanup_mapped_symtab (void *p) | |
22616 | { | |
22617 | struct mapped_symtab *symtab = p; | |
22618 | /* The contents of the array are freed when the other hash table is | |
22619 | destroyed. */ | |
22620 | xfree (symtab->data); | |
22621 | xfree (symtab); | |
22622 | } | |
22623 | ||
22624 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
22625 | the slot. |
22626 | ||
22627 | Function is used only during write_hash_table so no index format backward | |
22628 | compatibility is needed. */ | |
b89be57b | 22629 | |
9291a0cd TT |
22630 | static struct symtab_index_entry ** |
22631 | find_slot (struct mapped_symtab *symtab, const char *name) | |
22632 | { | |
559a7a62 | 22633 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
22634 | |
22635 | index = hash & (symtab->size - 1); | |
22636 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
22637 | ||
22638 | for (;;) | |
22639 | { | |
22640 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
22641 | return &symtab->data[index]; | |
22642 | index = (index + step) & (symtab->size - 1); | |
22643 | } | |
22644 | } | |
22645 | ||
22646 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 22647 | |
9291a0cd TT |
22648 | static void |
22649 | hash_expand (struct mapped_symtab *symtab) | |
22650 | { | |
22651 | offset_type old_size = symtab->size; | |
22652 | offset_type i; | |
22653 | struct symtab_index_entry **old_entries = symtab->data; | |
22654 | ||
22655 | symtab->size *= 2; | |
22656 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
22657 | ||
22658 | for (i = 0; i < old_size; ++i) | |
22659 | { | |
22660 | if (old_entries[i]) | |
22661 | { | |
22662 | struct symtab_index_entry **slot = find_slot (symtab, | |
22663 | old_entries[i]->name); | |
22664 | *slot = old_entries[i]; | |
22665 | } | |
22666 | } | |
22667 | ||
22668 | xfree (old_entries); | |
22669 | } | |
22670 | ||
156942c7 DE |
22671 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
22672 | CU_INDEX is the index of the CU in which the symbol appears. | |
22673 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 22674 | |
9291a0cd TT |
22675 | static void |
22676 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 22677 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
22678 | offset_type cu_index) |
22679 | { | |
22680 | struct symtab_index_entry **slot; | |
156942c7 | 22681 | offset_type cu_index_and_attrs; |
9291a0cd TT |
22682 | |
22683 | ++symtab->n_elements; | |
22684 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
22685 | hash_expand (symtab); | |
22686 | ||
22687 | slot = find_slot (symtab, name); | |
22688 | if (!*slot) | |
22689 | { | |
22690 | *slot = XNEW (struct symtab_index_entry); | |
22691 | (*slot)->name = name; | |
156942c7 | 22692 | /* index_offset is set later. */ |
9291a0cd TT |
22693 | (*slot)->cu_indices = NULL; |
22694 | } | |
156942c7 DE |
22695 | |
22696 | cu_index_and_attrs = 0; | |
22697 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
22698 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
22699 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
22700 | ||
22701 | /* We don't want to record an index value twice as we want to avoid the | |
22702 | duplication. | |
22703 | We process all global symbols and then all static symbols | |
22704 | (which would allow us to avoid the duplication by only having to check | |
22705 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
22706 | To keep things simple we don't worry about the duplication here and | |
22707 | sort and uniqufy the list after we've processed all symbols. */ | |
22708 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
22709 | } | |
22710 | ||
22711 | /* qsort helper routine for uniquify_cu_indices. */ | |
22712 | ||
22713 | static int | |
22714 | offset_type_compare (const void *ap, const void *bp) | |
22715 | { | |
22716 | offset_type a = *(offset_type *) ap; | |
22717 | offset_type b = *(offset_type *) bp; | |
22718 | ||
22719 | return (a > b) - (b > a); | |
22720 | } | |
22721 | ||
22722 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
22723 | ||
22724 | static void | |
22725 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
22726 | { | |
22727 | int i; | |
22728 | ||
22729 | for (i = 0; i < symtab->size; ++i) | |
22730 | { | |
22731 | struct symtab_index_entry *entry = symtab->data[i]; | |
22732 | ||
22733 | if (entry | |
22734 | && entry->cu_indices != NULL) | |
22735 | { | |
22736 | unsigned int next_to_insert, next_to_check; | |
22737 | offset_type last_value; | |
22738 | ||
22739 | qsort (VEC_address (offset_type, entry->cu_indices), | |
22740 | VEC_length (offset_type, entry->cu_indices), | |
22741 | sizeof (offset_type), offset_type_compare); | |
22742 | ||
22743 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
22744 | next_to_insert = 1; | |
22745 | for (next_to_check = 1; | |
22746 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
22747 | ++next_to_check) | |
22748 | { | |
22749 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
22750 | != last_value) | |
22751 | { | |
22752 | last_value = VEC_index (offset_type, entry->cu_indices, | |
22753 | next_to_check); | |
22754 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
22755 | last_value); | |
22756 | ++next_to_insert; | |
22757 | } | |
22758 | } | |
22759 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
22760 | } | |
22761 | } | |
9291a0cd TT |
22762 | } |
22763 | ||
22764 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 22765 | |
9291a0cd | 22766 | static offset_type |
3876f04e | 22767 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
22768 | struct symtab_index_entry *entry) |
22769 | { | |
22770 | void **slot; | |
22771 | ||
3876f04e | 22772 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
22773 | if (!*slot) |
22774 | { | |
22775 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
22776 | offset_type val = MAYBE_SWAP (len); | |
22777 | offset_type iter; | |
22778 | int i; | |
22779 | ||
22780 | *slot = entry; | |
22781 | entry->index_offset = obstack_object_size (cpool); | |
22782 | ||
22783 | obstack_grow (cpool, &val, sizeof (val)); | |
22784 | for (i = 0; | |
22785 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
22786 | ++i) | |
22787 | { | |
22788 | val = MAYBE_SWAP (iter); | |
22789 | obstack_grow (cpool, &val, sizeof (val)); | |
22790 | } | |
22791 | } | |
22792 | else | |
22793 | { | |
22794 | struct symtab_index_entry *old_entry = *slot; | |
22795 | entry->index_offset = old_entry->index_offset; | |
22796 | entry = old_entry; | |
22797 | } | |
22798 | return entry->index_offset; | |
22799 | } | |
22800 | ||
22801 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
22802 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 22803 | |
9291a0cd TT |
22804 | static void |
22805 | write_hash_table (struct mapped_symtab *symtab, | |
22806 | struct obstack *output, struct obstack *cpool) | |
22807 | { | |
22808 | offset_type i; | |
3876f04e | 22809 | htab_t symbol_hash_table; |
9291a0cd TT |
22810 | htab_t str_table; |
22811 | ||
3876f04e | 22812 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 22813 | str_table = create_strtab (); |
3876f04e | 22814 | |
9291a0cd TT |
22815 | /* We add all the index vectors to the constant pool first, to |
22816 | ensure alignment is ok. */ | |
22817 | for (i = 0; i < symtab->size; ++i) | |
22818 | { | |
22819 | if (symtab->data[i]) | |
3876f04e | 22820 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
22821 | } |
22822 | ||
22823 | /* Now write out the hash table. */ | |
22824 | for (i = 0; i < symtab->size; ++i) | |
22825 | { | |
22826 | offset_type str_off, vec_off; | |
22827 | ||
22828 | if (symtab->data[i]) | |
22829 | { | |
22830 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
22831 | vec_off = symtab->data[i]->index_offset; | |
22832 | } | |
22833 | else | |
22834 | { | |
22835 | /* While 0 is a valid constant pool index, it is not valid | |
22836 | to have 0 for both offsets. */ | |
22837 | str_off = 0; | |
22838 | vec_off = 0; | |
22839 | } | |
22840 | ||
22841 | str_off = MAYBE_SWAP (str_off); | |
22842 | vec_off = MAYBE_SWAP (vec_off); | |
22843 | ||
22844 | obstack_grow (output, &str_off, sizeof (str_off)); | |
22845 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
22846 | } | |
22847 | ||
22848 | htab_delete (str_table); | |
3876f04e | 22849 | htab_delete (symbol_hash_table); |
9291a0cd TT |
22850 | } |
22851 | ||
0a5429f6 DE |
22852 | /* Struct to map psymtab to CU index in the index file. */ |
22853 | struct psymtab_cu_index_map | |
22854 | { | |
22855 | struct partial_symtab *psymtab; | |
22856 | unsigned int cu_index; | |
22857 | }; | |
22858 | ||
22859 | static hashval_t | |
22860 | hash_psymtab_cu_index (const void *item) | |
22861 | { | |
22862 | const struct psymtab_cu_index_map *map = item; | |
22863 | ||
22864 | return htab_hash_pointer (map->psymtab); | |
22865 | } | |
22866 | ||
22867 | static int | |
22868 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
22869 | { | |
22870 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
22871 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
22872 | ||
22873 | return lhs->psymtab == rhs->psymtab; | |
22874 | } | |
22875 | ||
22876 | /* Helper struct for building the address table. */ | |
22877 | struct addrmap_index_data | |
22878 | { | |
22879 | struct objfile *objfile; | |
22880 | struct obstack *addr_obstack; | |
22881 | htab_t cu_index_htab; | |
22882 | ||
22883 | /* Non-zero if the previous_* fields are valid. | |
22884 | We can't write an entry until we see the next entry (since it is only then | |
22885 | that we know the end of the entry). */ | |
22886 | int previous_valid; | |
22887 | /* Index of the CU in the table of all CUs in the index file. */ | |
22888 | unsigned int previous_cu_index; | |
0963b4bd | 22889 | /* Start address of the CU. */ |
0a5429f6 DE |
22890 | CORE_ADDR previous_cu_start; |
22891 | }; | |
22892 | ||
22893 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 22894 | |
9291a0cd | 22895 | static void |
0a5429f6 DE |
22896 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
22897 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 22898 | { |
0a5429f6 | 22899 | offset_type cu_index_to_write; |
948f8e3d | 22900 | gdb_byte addr[8]; |
9291a0cd TT |
22901 | CORE_ADDR baseaddr; |
22902 | ||
22903 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
22904 | ||
0a5429f6 DE |
22905 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
22906 | obstack_grow (obstack, addr, 8); | |
22907 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
22908 | obstack_grow (obstack, addr, 8); | |
22909 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
22910 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
22911 | } | |
22912 | ||
22913 | /* Worker function for traversing an addrmap to build the address table. */ | |
22914 | ||
22915 | static int | |
22916 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
22917 | { | |
22918 | struct addrmap_index_data *data = datap; | |
22919 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
22920 | |
22921 | if (data->previous_valid) | |
22922 | add_address_entry (data->objfile, data->addr_obstack, | |
22923 | data->previous_cu_start, start_addr, | |
22924 | data->previous_cu_index); | |
22925 | ||
22926 | data->previous_cu_start = start_addr; | |
22927 | if (pst != NULL) | |
22928 | { | |
22929 | struct psymtab_cu_index_map find_map, *map; | |
22930 | find_map.psymtab = pst; | |
22931 | map = htab_find (data->cu_index_htab, &find_map); | |
22932 | gdb_assert (map != NULL); | |
22933 | data->previous_cu_index = map->cu_index; | |
22934 | data->previous_valid = 1; | |
22935 | } | |
22936 | else | |
22937 | data->previous_valid = 0; | |
22938 | ||
22939 | return 0; | |
22940 | } | |
22941 | ||
22942 | /* Write OBJFILE's address map to OBSTACK. | |
22943 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
22944 | in the index file. */ | |
22945 | ||
22946 | static void | |
22947 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
22948 | htab_t cu_index_htab) | |
22949 | { | |
22950 | struct addrmap_index_data addrmap_index_data; | |
22951 | ||
22952 | /* When writing the address table, we have to cope with the fact that | |
22953 | the addrmap iterator only provides the start of a region; we have to | |
22954 | wait until the next invocation to get the start of the next region. */ | |
22955 | ||
22956 | addrmap_index_data.objfile = objfile; | |
22957 | addrmap_index_data.addr_obstack = obstack; | |
22958 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
22959 | addrmap_index_data.previous_valid = 0; | |
22960 | ||
22961 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
22962 | &addrmap_index_data); | |
22963 | ||
22964 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
22965 | is valid, but we should still handle it. | |
22966 | The end address is recorded as the start of the next region, but that | |
22967 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
22968 | anyway. */ | |
22969 | if (addrmap_index_data.previous_valid) | |
22970 | add_address_entry (objfile, obstack, | |
22971 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
22972 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
22973 | } |
22974 | ||
156942c7 DE |
22975 | /* Return the symbol kind of PSYM. */ |
22976 | ||
22977 | static gdb_index_symbol_kind | |
22978 | symbol_kind (struct partial_symbol *psym) | |
22979 | { | |
22980 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
22981 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
22982 | ||
22983 | switch (domain) | |
22984 | { | |
22985 | case VAR_DOMAIN: | |
22986 | switch (aclass) | |
22987 | { | |
22988 | case LOC_BLOCK: | |
22989 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
22990 | case LOC_TYPEDEF: | |
22991 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
22992 | case LOC_COMPUTED: | |
22993 | case LOC_CONST_BYTES: | |
22994 | case LOC_OPTIMIZED_OUT: | |
22995 | case LOC_STATIC: | |
22996 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
22997 | case LOC_CONST: | |
22998 | /* Note: It's currently impossible to recognize psyms as enum values | |
22999 | short of reading the type info. For now punt. */ | |
23000 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
23001 | default: | |
23002 | /* There are other LOC_FOO values that one might want to classify | |
23003 | as variables, but dwarf2read.c doesn't currently use them. */ | |
23004 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
23005 | } | |
23006 | case STRUCT_DOMAIN: | |
23007 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
23008 | default: | |
23009 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
23010 | } | |
23011 | } | |
23012 | ||
9291a0cd | 23013 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 23014 | |
9291a0cd TT |
23015 | static void |
23016 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 23017 | htab_t psyms_seen, |
9291a0cd TT |
23018 | struct partial_symbol **psymp, |
23019 | int count, | |
987d643c TT |
23020 | offset_type cu_index, |
23021 | int is_static) | |
9291a0cd TT |
23022 | { |
23023 | for (; count-- > 0; ++psymp) | |
23024 | { | |
156942c7 DE |
23025 | struct partial_symbol *psym = *psymp; |
23026 | void **slot; | |
987d643c | 23027 | |
156942c7 | 23028 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 23029 | error (_("Ada is not currently supported by the index")); |
987d643c | 23030 | |
987d643c | 23031 | /* Only add a given psymbol once. */ |
156942c7 | 23032 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
23033 | if (!*slot) |
23034 | { | |
156942c7 DE |
23035 | gdb_index_symbol_kind kind = symbol_kind (psym); |
23036 | ||
23037 | *slot = psym; | |
23038 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
23039 | is_static, kind, cu_index); | |
987d643c | 23040 | } |
9291a0cd TT |
23041 | } |
23042 | } | |
23043 | ||
23044 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
23045 | exception if there is an error. */ | |
b89be57b | 23046 | |
9291a0cd TT |
23047 | static void |
23048 | write_obstack (FILE *file, struct obstack *obstack) | |
23049 | { | |
23050 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
23051 | file) | |
23052 | != obstack_object_size (obstack)) | |
23053 | error (_("couldn't data write to file")); | |
23054 | } | |
23055 | ||
23056 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 23057 | |
9291a0cd TT |
23058 | static void |
23059 | unlink_if_set (void *p) | |
23060 | { | |
23061 | char **filename = p; | |
23062 | if (*filename) | |
23063 | unlink (*filename); | |
23064 | } | |
23065 | ||
1fd400ff TT |
23066 | /* A helper struct used when iterating over debug_types. */ |
23067 | struct signatured_type_index_data | |
23068 | { | |
23069 | struct objfile *objfile; | |
23070 | struct mapped_symtab *symtab; | |
23071 | struct obstack *types_list; | |
987d643c | 23072 | htab_t psyms_seen; |
1fd400ff TT |
23073 | int cu_index; |
23074 | }; | |
23075 | ||
23076 | /* A helper function that writes a single signatured_type to an | |
23077 | obstack. */ | |
b89be57b | 23078 | |
1fd400ff TT |
23079 | static int |
23080 | write_one_signatured_type (void **slot, void *d) | |
23081 | { | |
23082 | struct signatured_type_index_data *info = d; | |
23083 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
0186c6a7 | 23084 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
23085 | gdb_byte val[8]; |
23086 | ||
23087 | write_psymbols (info->symtab, | |
987d643c | 23088 | info->psyms_seen, |
3e43a32a MS |
23089 | info->objfile->global_psymbols.list |
23090 | + psymtab->globals_offset, | |
987d643c TT |
23091 | psymtab->n_global_syms, info->cu_index, |
23092 | 0); | |
1fd400ff | 23093 | write_psymbols (info->symtab, |
987d643c | 23094 | info->psyms_seen, |
3e43a32a MS |
23095 | info->objfile->static_psymbols.list |
23096 | + psymtab->statics_offset, | |
987d643c TT |
23097 | psymtab->n_static_syms, info->cu_index, |
23098 | 1); | |
1fd400ff | 23099 | |
b64f50a1 JK |
23100 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23101 | entry->per_cu.offset.sect_off); | |
1fd400ff | 23102 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
23103 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23104 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
23105 | obstack_grow (info->types_list, val, 8); |
23106 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
23107 | obstack_grow (info->types_list, val, 8); | |
23108 | ||
23109 | ++info->cu_index; | |
23110 | ||
23111 | return 1; | |
23112 | } | |
23113 | ||
95554aad TT |
23114 | /* Recurse into all "included" dependencies and write their symbols as |
23115 | if they appeared in this psymtab. */ | |
23116 | ||
23117 | static void | |
23118 | recursively_write_psymbols (struct objfile *objfile, | |
23119 | struct partial_symtab *psymtab, | |
23120 | struct mapped_symtab *symtab, | |
23121 | htab_t psyms_seen, | |
23122 | offset_type cu_index) | |
23123 | { | |
23124 | int i; | |
23125 | ||
23126 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
23127 | if (psymtab->dependencies[i]->user != NULL) | |
23128 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
23129 | symtab, psyms_seen, cu_index); | |
23130 | ||
23131 | write_psymbols (symtab, | |
23132 | psyms_seen, | |
23133 | objfile->global_psymbols.list + psymtab->globals_offset, | |
23134 | psymtab->n_global_syms, cu_index, | |
23135 | 0); | |
23136 | write_psymbols (symtab, | |
23137 | psyms_seen, | |
23138 | objfile->static_psymbols.list + psymtab->statics_offset, | |
23139 | psymtab->n_static_syms, cu_index, | |
23140 | 1); | |
23141 | } | |
23142 | ||
9291a0cd | 23143 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 23144 | |
9291a0cd TT |
23145 | static void |
23146 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
23147 | { | |
23148 | struct cleanup *cleanup; | |
23149 | char *filename, *cleanup_filename; | |
1fd400ff TT |
23150 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
23151 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
23152 | int i; |
23153 | FILE *out_file; | |
23154 | struct mapped_symtab *symtab; | |
23155 | offset_type val, size_of_contents, total_len; | |
23156 | struct stat st; | |
987d643c | 23157 | htab_t psyms_seen; |
0a5429f6 DE |
23158 | htab_t cu_index_htab; |
23159 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 23160 | |
9291a0cd TT |
23161 | if (dwarf2_per_objfile->using_index) |
23162 | error (_("Cannot use an index to create the index")); | |
23163 | ||
8b70b953 TT |
23164 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
23165 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
23166 | ||
260b681b DE |
23167 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
23168 | return; | |
23169 | ||
4262abfb JK |
23170 | if (stat (objfile_name (objfile), &st) < 0) |
23171 | perror_with_name (objfile_name (objfile)); | |
9291a0cd | 23172 | |
4262abfb | 23173 | filename = concat (dir, SLASH_STRING, lbasename (objfile_name (objfile)), |
9291a0cd TT |
23174 | INDEX_SUFFIX, (char *) NULL); |
23175 | cleanup = make_cleanup (xfree, filename); | |
23176 | ||
614c279d | 23177 | out_file = gdb_fopen_cloexec (filename, "wb"); |
9291a0cd TT |
23178 | if (!out_file) |
23179 | error (_("Can't open `%s' for writing"), filename); | |
23180 | ||
23181 | cleanup_filename = filename; | |
23182 | make_cleanup (unlink_if_set, &cleanup_filename); | |
23183 | ||
23184 | symtab = create_mapped_symtab (); | |
23185 | make_cleanup (cleanup_mapped_symtab, symtab); | |
23186 | ||
23187 | obstack_init (&addr_obstack); | |
23188 | make_cleanup_obstack_free (&addr_obstack); | |
23189 | ||
23190 | obstack_init (&cu_list); | |
23191 | make_cleanup_obstack_free (&cu_list); | |
23192 | ||
1fd400ff TT |
23193 | obstack_init (&types_cu_list); |
23194 | make_cleanup_obstack_free (&types_cu_list); | |
23195 | ||
987d643c TT |
23196 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
23197 | NULL, xcalloc, xfree); | |
96408a79 | 23198 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 23199 | |
0a5429f6 DE |
23200 | /* While we're scanning CU's create a table that maps a psymtab pointer |
23201 | (which is what addrmap records) to its index (which is what is recorded | |
23202 | in the index file). This will later be needed to write the address | |
23203 | table. */ | |
23204 | cu_index_htab = htab_create_alloc (100, | |
23205 | hash_psymtab_cu_index, | |
23206 | eq_psymtab_cu_index, | |
23207 | NULL, xcalloc, xfree); | |
96408a79 | 23208 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
23209 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
23210 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
23211 | * dwarf2_per_objfile->n_comp_units); | |
23212 | make_cleanup (xfree, psymtab_cu_index_map); | |
23213 | ||
23214 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
23215 | work here. Also, the debug_types entries do not appear in |
23216 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
23217 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
23218 | { | |
3e43a32a MS |
23219 | struct dwarf2_per_cu_data *per_cu |
23220 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 23221 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 23222 | gdb_byte val[8]; |
0a5429f6 DE |
23223 | struct psymtab_cu_index_map *map; |
23224 | void **slot; | |
9291a0cd | 23225 | |
92fac807 JK |
23226 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
23227 | It may be referenced from a local scope but in such case it does not | |
23228 | need to be present in .gdb_index. */ | |
23229 | if (psymtab == NULL) | |
23230 | continue; | |
23231 | ||
95554aad TT |
23232 | if (psymtab->user == NULL) |
23233 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 23234 | |
0a5429f6 DE |
23235 | map = &psymtab_cu_index_map[i]; |
23236 | map->psymtab = psymtab; | |
23237 | map->cu_index = i; | |
23238 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
23239 | gdb_assert (slot != NULL); | |
23240 | gdb_assert (*slot == NULL); | |
23241 | *slot = map; | |
9291a0cd | 23242 | |
b64f50a1 JK |
23243 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23244 | per_cu->offset.sect_off); | |
9291a0cd | 23245 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 23246 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
23247 | obstack_grow (&cu_list, val, 8); |
23248 | } | |
23249 | ||
0a5429f6 DE |
23250 | /* Dump the address map. */ |
23251 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
23252 | ||
1fd400ff TT |
23253 | /* Write out the .debug_type entries, if any. */ |
23254 | if (dwarf2_per_objfile->signatured_types) | |
23255 | { | |
23256 | struct signatured_type_index_data sig_data; | |
23257 | ||
23258 | sig_data.objfile = objfile; | |
23259 | sig_data.symtab = symtab; | |
23260 | sig_data.types_list = &types_cu_list; | |
987d643c | 23261 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
23262 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
23263 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
23264 | write_one_signatured_type, &sig_data); | |
23265 | } | |
23266 | ||
156942c7 DE |
23267 | /* Now that we've processed all symbols we can shrink their cu_indices |
23268 | lists. */ | |
23269 | uniquify_cu_indices (symtab); | |
23270 | ||
9291a0cd TT |
23271 | obstack_init (&constant_pool); |
23272 | make_cleanup_obstack_free (&constant_pool); | |
23273 | obstack_init (&symtab_obstack); | |
23274 | make_cleanup_obstack_free (&symtab_obstack); | |
23275 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
23276 | ||
23277 | obstack_init (&contents); | |
23278 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 23279 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
23280 | total_len = size_of_contents; |
23281 | ||
23282 | /* The version number. */ | |
796a7ff8 | 23283 | val = MAYBE_SWAP (8); |
9291a0cd TT |
23284 | obstack_grow (&contents, &val, sizeof (val)); |
23285 | ||
23286 | /* The offset of the CU list from the start of the file. */ | |
23287 | val = MAYBE_SWAP (total_len); | |
23288 | obstack_grow (&contents, &val, sizeof (val)); | |
23289 | total_len += obstack_object_size (&cu_list); | |
23290 | ||
1fd400ff TT |
23291 | /* The offset of the types CU list from the start of the file. */ |
23292 | val = MAYBE_SWAP (total_len); | |
23293 | obstack_grow (&contents, &val, sizeof (val)); | |
23294 | total_len += obstack_object_size (&types_cu_list); | |
23295 | ||
9291a0cd TT |
23296 | /* The offset of the address table from the start of the file. */ |
23297 | val = MAYBE_SWAP (total_len); | |
23298 | obstack_grow (&contents, &val, sizeof (val)); | |
23299 | total_len += obstack_object_size (&addr_obstack); | |
23300 | ||
23301 | /* The offset of the symbol table from the start of the file. */ | |
23302 | val = MAYBE_SWAP (total_len); | |
23303 | obstack_grow (&contents, &val, sizeof (val)); | |
23304 | total_len += obstack_object_size (&symtab_obstack); | |
23305 | ||
23306 | /* The offset of the constant pool from the start of the file. */ | |
23307 | val = MAYBE_SWAP (total_len); | |
23308 | obstack_grow (&contents, &val, sizeof (val)); | |
23309 | total_len += obstack_object_size (&constant_pool); | |
23310 | ||
23311 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
23312 | ||
23313 | write_obstack (out_file, &contents); | |
23314 | write_obstack (out_file, &cu_list); | |
1fd400ff | 23315 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
23316 | write_obstack (out_file, &addr_obstack); |
23317 | write_obstack (out_file, &symtab_obstack); | |
23318 | write_obstack (out_file, &constant_pool); | |
23319 | ||
23320 | fclose (out_file); | |
23321 | ||
23322 | /* We want to keep the file, so we set cleanup_filename to NULL | |
23323 | here. See unlink_if_set. */ | |
23324 | cleanup_filename = NULL; | |
23325 | ||
23326 | do_cleanups (cleanup); | |
23327 | } | |
23328 | ||
90476074 TT |
23329 | /* Implementation of the `save gdb-index' command. |
23330 | ||
23331 | Note that the file format used by this command is documented in the | |
23332 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 23333 | |
9291a0cd TT |
23334 | static void |
23335 | save_gdb_index_command (char *arg, int from_tty) | |
23336 | { | |
23337 | struct objfile *objfile; | |
23338 | ||
23339 | if (!arg || !*arg) | |
96d19272 | 23340 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
23341 | |
23342 | ALL_OBJFILES (objfile) | |
23343 | { | |
23344 | struct stat st; | |
23345 | ||
23346 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 23347 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
23348 | continue; |
23349 | ||
23350 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
23351 | if (dwarf2_per_objfile) | |
23352 | { | |
9291a0cd | 23353 | |
492d29ea | 23354 | TRY |
9291a0cd TT |
23355 | { |
23356 | write_psymtabs_to_index (objfile, arg); | |
23357 | } | |
492d29ea PA |
23358 | CATCH (except, RETURN_MASK_ERROR) |
23359 | { | |
23360 | exception_fprintf (gdb_stderr, except, | |
23361 | _("Error while writing index for `%s': "), | |
23362 | objfile_name (objfile)); | |
23363 | } | |
23364 | END_CATCH | |
9291a0cd TT |
23365 | } |
23366 | } | |
dce234bc PP |
23367 | } |
23368 | ||
9291a0cd TT |
23369 | \f |
23370 | ||
b4f54984 | 23371 | int dwarf_always_disassemble; |
9eae7c52 TT |
23372 | |
23373 | static void | |
b4f54984 DE |
23374 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
23375 | struct cmd_list_element *c, const char *value) | |
9eae7c52 | 23376 | { |
3e43a32a MS |
23377 | fprintf_filtered (file, |
23378 | _("Whether to always disassemble " | |
23379 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
23380 | value); |
23381 | } | |
23382 | ||
900e11f9 JK |
23383 | static void |
23384 | show_check_physname (struct ui_file *file, int from_tty, | |
23385 | struct cmd_list_element *c, const char *value) | |
23386 | { | |
23387 | fprintf_filtered (file, | |
23388 | _("Whether to check \"physname\" is %s.\n"), | |
23389 | value); | |
23390 | } | |
23391 | ||
6502dd73 DJ |
23392 | void _initialize_dwarf2_read (void); |
23393 | ||
23394 | void | |
23395 | _initialize_dwarf2_read (void) | |
23396 | { | |
96d19272 JK |
23397 | struct cmd_list_element *c; |
23398 | ||
dce234bc | 23399 | dwarf2_objfile_data_key |
c1bd65d0 | 23400 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 23401 | |
b4f54984 DE |
23402 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
23403 | Set DWARF specific variables.\n\ | |
23404 | Configure DWARF variables such as the cache size"), | |
23405 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
ae038cb0 DJ |
23406 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
23407 | ||
b4f54984 DE |
23408 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
23409 | Show DWARF specific variables\n\ | |
23410 | Show DWARF variables such as the cache size"), | |
23411 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
ae038cb0 DJ |
23412 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
23413 | ||
23414 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
b4f54984 DE |
23415 | &dwarf_max_cache_age, _("\ |
23416 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
23417 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
7915a72c AC |
23418 | A higher limit means that cached compilation units will be stored\n\ |
23419 | in memory longer, and more total memory will be used. Zero disables\n\ | |
23420 | caching, which can slow down startup."), | |
2c5b56ce | 23421 | NULL, |
b4f54984 DE |
23422 | show_dwarf_max_cache_age, |
23423 | &set_dwarf_cmdlist, | |
23424 | &show_dwarf_cmdlist); | |
d97bc12b | 23425 | |
9eae7c52 | 23426 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
b4f54984 | 23427 | &dwarf_always_disassemble, _("\ |
9eae7c52 TT |
23428 | Set whether `info address' always disassembles DWARF expressions."), _("\ |
23429 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
23430 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
23431 | syntax. When disabled, expressions will be printed in a more\n\ | |
23432 | conversational style, when possible."), | |
23433 | NULL, | |
b4f54984 DE |
23434 | show_dwarf_always_disassemble, |
23435 | &set_dwarf_cmdlist, | |
23436 | &show_dwarf_cmdlist); | |
23437 | ||
23438 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ | |
23439 | Set debugging of the DWARF reader."), _("\ | |
23440 | Show debugging of the DWARF reader."), _("\ | |
23441 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
73be47f5 DE |
23442 | reading and symtab expansion. A value of 1 (one) provides basic\n\ |
23443 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
23444 | NULL, |
23445 | NULL, | |
23446 | &setdebuglist, &showdebuglist); | |
23447 | ||
b4f54984 DE |
23448 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
23449 | Set debugging of the DWARF DIE reader."), _("\ | |
23450 | Show debugging of the DWARF DIE reader."), _("\ | |
d97bc12b DE |
23451 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ |
23452 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
23453 | NULL, |
23454 | NULL, | |
23455 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23456 | |
27e0867f DE |
23457 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
23458 | Set debugging of the dwarf line reader."), _("\ | |
23459 | Show debugging of the dwarf line reader."), _("\ | |
23460 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
23461 | A value of 1 (one) provides basic information.\n\ | |
23462 | A value greater than 1 provides more verbose information."), | |
23463 | NULL, | |
23464 | NULL, | |
23465 | &setdebuglist, &showdebuglist); | |
23466 | ||
900e11f9 JK |
23467 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
23468 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
23469 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
23470 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
23471 | the demangler."), | |
23472 | NULL, show_check_physname, | |
23473 | &setdebuglist, &showdebuglist); | |
23474 | ||
e615022a DE |
23475 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
23476 | no_class, &use_deprecated_index_sections, _("\ | |
23477 | Set whether to use deprecated gdb_index sections."), _("\ | |
23478 | Show whether to use deprecated gdb_index sections."), _("\ | |
23479 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
23480 | Normally they are ignored either because of a missing feature or\n\ | |
23481 | performance issue.\n\ | |
23482 | Warning: This option must be enabled before gdb reads the file."), | |
23483 | NULL, | |
23484 | NULL, | |
23485 | &setlist, &showlist); | |
23486 | ||
96d19272 | 23487 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 23488 | _("\ |
fc1a9d6e | 23489 | Save a gdb-index file.\n\ |
11570e71 | 23490 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
23491 | &save_cmdlist); |
23492 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
23493 | |
23494 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23495 | &dwarf2_locexpr_funcs); | |
23496 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23497 | &dwarf2_loclist_funcs); | |
23498 | ||
23499 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23500 | &dwarf2_block_frame_base_locexpr_funcs); | |
23501 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23502 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 23503 | } |