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. | |
45cfd468 | 81 | This is in contrast to the low level DIE reading of dwarf2_die_debug. */ |
73be47f5 | 82 | static unsigned int dwarf2_read_debug = 0; |
45cfd468 | 83 | |
d97bc12b | 84 | /* When non-zero, dump DIEs after they are read in. */ |
ccce17b0 | 85 | static unsigned int dwarf2_die_debug = 0; |
d97bc12b | 86 | |
900e11f9 JK |
87 | /* When non-zero, cross-check physname against demangler. */ |
88 | static int check_physname = 0; | |
89 | ||
481860b3 | 90 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 91 | static int use_deprecated_index_sections = 0; |
481860b3 | 92 | |
6502dd73 DJ |
93 | static const struct objfile_data *dwarf2_objfile_data_key; |
94 | ||
f1e6e072 TT |
95 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
96 | ||
97 | static int dwarf2_locexpr_index; | |
98 | static int dwarf2_loclist_index; | |
99 | static int dwarf2_locexpr_block_index; | |
100 | static int dwarf2_loclist_block_index; | |
101 | ||
73869dc2 DE |
102 | /* A descriptor for dwarf sections. |
103 | ||
104 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
105 | scanned. BUFFER, READIN are filled in later when the section is read. | |
106 | If the section contained compressed data then SIZE is updated to record | |
107 | the uncompressed size of the section. | |
108 | ||
109 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
110 | creating the concept of virtual sections contained within a real section. | |
111 | In DWP V2 the sections of the input DWO files are concatenated together | |
112 | into one section, but section offsets are kept relative to the original | |
113 | input section. | |
114 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
115 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
116 | describe the virtual section. */ | |
117 | ||
dce234bc PP |
118 | struct dwarf2_section_info |
119 | { | |
73869dc2 DE |
120 | union |
121 | { | |
e5aa3347 | 122 | /* If this is a real section, the bfd section. */ |
73869dc2 DE |
123 | asection *asection; |
124 | /* If this is a virtual section, pointer to the containing ("real") | |
e5aa3347 | 125 | section. */ |
73869dc2 DE |
126 | struct dwarf2_section_info *containing_section; |
127 | } s; | |
19ac8c2e | 128 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 129 | const gdb_byte *buffer; |
73869dc2 | 130 | /* The size of the section, real or virtual. */ |
dce234bc | 131 | bfd_size_type size; |
73869dc2 DE |
132 | /* If this is a virtual section, the offset in the real section. |
133 | Only valid if is_virtual. */ | |
134 | bfd_size_type virtual_offset; | |
be391dca | 135 | /* True if we have tried to read this section. */ |
73869dc2 DE |
136 | char readin; |
137 | /* True if this is a virtual section, False otherwise. | |
138 | This specifies which of s.asection and s.containing_section to use. */ | |
139 | char is_virtual; | |
dce234bc PP |
140 | }; |
141 | ||
8b70b953 TT |
142 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
143 | DEF_VEC_O (dwarf2_section_info_def); | |
144 | ||
9291a0cd TT |
145 | /* All offsets in the index are of this type. It must be |
146 | architecture-independent. */ | |
147 | typedef uint32_t offset_type; | |
148 | ||
149 | DEF_VEC_I (offset_type); | |
150 | ||
156942c7 DE |
151 | /* Ensure only legit values are used. */ |
152 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
153 | do { \ | |
154 | gdb_assert ((unsigned int) (value) <= 1); \ | |
155 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
156 | } while (0) | |
157 | ||
158 | /* Ensure only legit values are used. */ | |
159 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
160 | do { \ | |
161 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
162 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
163 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
164 | } while (0) | |
165 | ||
166 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
167 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
168 | do { \ | |
169 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
170 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
171 | } while (0) | |
172 | ||
9291a0cd TT |
173 | /* A description of the mapped index. The file format is described in |
174 | a comment by the code that writes the index. */ | |
175 | struct mapped_index | |
176 | { | |
559a7a62 JK |
177 | /* Index data format version. */ |
178 | int version; | |
179 | ||
9291a0cd TT |
180 | /* The total length of the buffer. */ |
181 | off_t total_size; | |
b11b1f88 | 182 | |
9291a0cd TT |
183 | /* A pointer to the address table data. */ |
184 | const gdb_byte *address_table; | |
b11b1f88 | 185 | |
9291a0cd TT |
186 | /* Size of the address table data in bytes. */ |
187 | offset_type address_table_size; | |
b11b1f88 | 188 | |
3876f04e DE |
189 | /* The symbol table, implemented as a hash table. */ |
190 | const offset_type *symbol_table; | |
b11b1f88 | 191 | |
9291a0cd | 192 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 193 | offset_type symbol_table_slots; |
b11b1f88 | 194 | |
9291a0cd TT |
195 | /* A pointer to the constant pool. */ |
196 | const char *constant_pool; | |
197 | }; | |
198 | ||
95554aad TT |
199 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
200 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
201 | ||
9cdd5dbd DE |
202 | /* Collection of data recorded per objfile. |
203 | This hangs off of dwarf2_objfile_data_key. */ | |
204 | ||
6502dd73 DJ |
205 | struct dwarf2_per_objfile |
206 | { | |
dce234bc PP |
207 | struct dwarf2_section_info info; |
208 | struct dwarf2_section_info abbrev; | |
209 | struct dwarf2_section_info line; | |
dce234bc PP |
210 | struct dwarf2_section_info loc; |
211 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 212 | struct dwarf2_section_info macro; |
dce234bc PP |
213 | struct dwarf2_section_info str; |
214 | struct dwarf2_section_info ranges; | |
3019eac3 | 215 | struct dwarf2_section_info addr; |
dce234bc PP |
216 | struct dwarf2_section_info frame; |
217 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 218 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 219 | |
8b70b953 TT |
220 | VEC (dwarf2_section_info_def) *types; |
221 | ||
be391dca TT |
222 | /* Back link. */ |
223 | struct objfile *objfile; | |
224 | ||
d467dd73 | 225 | /* Table of all the compilation units. This is used to locate |
10b3939b | 226 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
227 | struct dwarf2_per_cu_data **all_comp_units; |
228 | ||
229 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
230 | int n_comp_units; | |
231 | ||
1fd400ff | 232 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 233 | int n_type_units; |
1fd400ff | 234 | |
6aa5f3a6 DE |
235 | /* The number of elements allocated in all_type_units. |
236 | If there are skeleton-less TUs, we add them to all_type_units lazily. */ | |
237 | int n_allocated_type_units; | |
238 | ||
a2ce51a0 DE |
239 | /* The .debug_types-related CUs (TUs). |
240 | This is stored in malloc space because we may realloc it. */ | |
b4dd5633 | 241 | struct signatured_type **all_type_units; |
1fd400ff | 242 | |
f4dc4d17 DE |
243 | /* Table of struct type_unit_group objects. |
244 | The hash key is the DW_AT_stmt_list value. */ | |
245 | htab_t type_unit_groups; | |
72dca2f5 | 246 | |
348e048f DE |
247 | /* A table mapping .debug_types signatures to its signatured_type entry. |
248 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
249 | htab_t signatured_types; | |
250 | ||
f4dc4d17 DE |
251 | /* Type unit statistics, to see how well the scaling improvements |
252 | are doing. */ | |
253 | struct tu_stats | |
254 | { | |
255 | int nr_uniq_abbrev_tables; | |
256 | int nr_symtabs; | |
257 | int nr_symtab_sharers; | |
258 | int nr_stmt_less_type_units; | |
6aa5f3a6 | 259 | int nr_all_type_units_reallocs; |
f4dc4d17 DE |
260 | } tu_stats; |
261 | ||
262 | /* A chain of compilation units that are currently read in, so that | |
263 | they can be freed later. */ | |
264 | struct dwarf2_per_cu_data *read_in_chain; | |
265 | ||
3019eac3 DE |
266 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
267 | This is NULL if the table hasn't been allocated yet. */ | |
268 | htab_t dwo_files; | |
269 | ||
80626a55 DE |
270 | /* Non-zero if we've check for whether there is a DWP file. */ |
271 | int dwp_checked; | |
272 | ||
273 | /* The DWP file if there is one, or NULL. */ | |
274 | struct dwp_file *dwp_file; | |
275 | ||
36586728 TT |
276 | /* The shared '.dwz' file, if one exists. This is used when the |
277 | original data was compressed using 'dwz -m'. */ | |
278 | struct dwz_file *dwz_file; | |
279 | ||
72dca2f5 FR |
280 | /* A flag indicating wether this objfile has a section loaded at a |
281 | VMA of 0. */ | |
282 | int has_section_at_zero; | |
9291a0cd | 283 | |
ae2de4f8 DE |
284 | /* True if we are using the mapped index, |
285 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
286 | unsigned char using_index; |
287 | ||
ae2de4f8 | 288 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 289 | struct mapped_index *index_table; |
98bfdba5 | 290 | |
7b9f3c50 | 291 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
292 | TUs typically share line table entries with a CU, so we maintain a |
293 | separate table of all line table entries to support the sharing. | |
294 | Note that while there can be way more TUs than CUs, we've already | |
295 | sorted all the TUs into "type unit groups", grouped by their | |
296 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
297 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
298 | htab_t quick_file_names_table; |
299 | ||
98bfdba5 PA |
300 | /* Set during partial symbol reading, to prevent queueing of full |
301 | symbols. */ | |
302 | int reading_partial_symbols; | |
673bfd45 | 303 | |
dee91e82 | 304 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 305 | This is NULL if not allocated yet. |
02142a6c | 306 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
dee91e82 | 307 | htab_t die_type_hash; |
95554aad TT |
308 | |
309 | /* The CUs we recently read. */ | |
310 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
527f3840 JK |
311 | |
312 | /* Table containing line_header indexed by offset and offset_in_dwz. */ | |
313 | htab_t line_header_hash; | |
6502dd73 DJ |
314 | }; |
315 | ||
316 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 317 | |
251d32d9 | 318 | /* Default names of the debugging sections. */ |
c906108c | 319 | |
233a11ab CS |
320 | /* Note that if the debugging section has been compressed, it might |
321 | have a name like .zdebug_info. */ | |
322 | ||
9cdd5dbd DE |
323 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
324 | { | |
251d32d9 TG |
325 | { ".debug_info", ".zdebug_info" }, |
326 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
327 | { ".debug_line", ".zdebug_line" }, | |
328 | { ".debug_loc", ".zdebug_loc" }, | |
329 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 330 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
331 | { ".debug_str", ".zdebug_str" }, |
332 | { ".debug_ranges", ".zdebug_ranges" }, | |
333 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 334 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
335 | { ".debug_frame", ".zdebug_frame" }, |
336 | { ".eh_frame", NULL }, | |
24d3216f TT |
337 | { ".gdb_index", ".zgdb_index" }, |
338 | 23 | |
251d32d9 | 339 | }; |
c906108c | 340 | |
80626a55 | 341 | /* List of DWO/DWP sections. */ |
3019eac3 | 342 | |
80626a55 | 343 | static const struct dwop_section_names |
3019eac3 DE |
344 | { |
345 | struct dwarf2_section_names abbrev_dwo; | |
346 | struct dwarf2_section_names info_dwo; | |
347 | struct dwarf2_section_names line_dwo; | |
348 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
349 | struct dwarf2_section_names macinfo_dwo; |
350 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
351 | struct dwarf2_section_names str_dwo; |
352 | struct dwarf2_section_names str_offsets_dwo; | |
353 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
354 | struct dwarf2_section_names cu_index; |
355 | struct dwarf2_section_names tu_index; | |
3019eac3 | 356 | } |
80626a55 | 357 | dwop_section_names = |
3019eac3 DE |
358 | { |
359 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
360 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
361 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
362 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
363 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
364 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
365 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
366 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
367 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
368 | { ".debug_cu_index", ".zdebug_cu_index" }, |
369 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
370 | }; |
371 | ||
c906108c SS |
372 | /* local data types */ |
373 | ||
107d2387 AC |
374 | /* The data in a compilation unit header, after target2host |
375 | translation, looks like this. */ | |
c906108c | 376 | struct comp_unit_head |
a738430d | 377 | { |
c764a876 | 378 | unsigned int length; |
a738430d | 379 | short version; |
a738430d MK |
380 | unsigned char addr_size; |
381 | unsigned char signed_addr_p; | |
b64f50a1 | 382 | sect_offset abbrev_offset; |
57349743 | 383 | |
a738430d MK |
384 | /* Size of file offsets; either 4 or 8. */ |
385 | unsigned int offset_size; | |
57349743 | 386 | |
a738430d MK |
387 | /* Size of the length field; either 4 or 12. */ |
388 | unsigned int initial_length_size; | |
57349743 | 389 | |
a738430d MK |
390 | /* Offset to the first byte of this compilation unit header in the |
391 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 392 | sect_offset offset; |
57349743 | 393 | |
d00adf39 DE |
394 | /* Offset to first die in this cu from the start of the cu. |
395 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 396 | cu_offset first_die_offset; |
a738430d | 397 | }; |
c906108c | 398 | |
3da10d80 KS |
399 | /* Type used for delaying computation of method physnames. |
400 | See comments for compute_delayed_physnames. */ | |
401 | struct delayed_method_info | |
402 | { | |
403 | /* The type to which the method is attached, i.e., its parent class. */ | |
404 | struct type *type; | |
405 | ||
406 | /* The index of the method in the type's function fieldlists. */ | |
407 | int fnfield_index; | |
408 | ||
409 | /* The index of the method in the fieldlist. */ | |
410 | int index; | |
411 | ||
412 | /* The name of the DIE. */ | |
413 | const char *name; | |
414 | ||
415 | /* The DIE associated with this method. */ | |
416 | struct die_info *die; | |
417 | }; | |
418 | ||
419 | typedef struct delayed_method_info delayed_method_info; | |
420 | DEF_VEC_O (delayed_method_info); | |
421 | ||
e7c27a73 DJ |
422 | /* Internal state when decoding a particular compilation unit. */ |
423 | struct dwarf2_cu | |
424 | { | |
425 | /* The objfile containing this compilation unit. */ | |
426 | struct objfile *objfile; | |
427 | ||
d00adf39 | 428 | /* The header of the compilation unit. */ |
e7c27a73 | 429 | struct comp_unit_head header; |
e142c38c | 430 | |
d00adf39 DE |
431 | /* Base address of this compilation unit. */ |
432 | CORE_ADDR base_address; | |
433 | ||
434 | /* Non-zero if base_address has been set. */ | |
435 | int base_known; | |
436 | ||
e142c38c DJ |
437 | /* The language we are debugging. */ |
438 | enum language language; | |
439 | const struct language_defn *language_defn; | |
440 | ||
b0f35d58 DL |
441 | const char *producer; |
442 | ||
e142c38c DJ |
443 | /* The generic symbol table building routines have separate lists for |
444 | file scope symbols and all all other scopes (local scopes). So | |
445 | we need to select the right one to pass to add_symbol_to_list(). | |
446 | We do it by keeping a pointer to the correct list in list_in_scope. | |
447 | ||
448 | FIXME: The original dwarf code just treated the file scope as the | |
449 | first local scope, and all other local scopes as nested local | |
450 | scopes, and worked fine. Check to see if we really need to | |
451 | distinguish these in buildsym.c. */ | |
452 | struct pending **list_in_scope; | |
453 | ||
433df2d4 DE |
454 | /* The abbrev table for this CU. |
455 | Normally this points to the abbrev table in the objfile. | |
456 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
457 | struct abbrev_table *abbrev_table; | |
72bf9492 | 458 | |
b64f50a1 JK |
459 | /* Hash table holding all the loaded partial DIEs |
460 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
461 | htab_t partial_dies; |
462 | ||
463 | /* Storage for things with the same lifetime as this read-in compilation | |
464 | unit, including partial DIEs. */ | |
465 | struct obstack comp_unit_obstack; | |
466 | ||
ae038cb0 DJ |
467 | /* When multiple dwarf2_cu structures are living in memory, this field |
468 | chains them all together, so that they can be released efficiently. | |
469 | We will probably also want a generation counter so that most-recently-used | |
470 | compilation units are cached... */ | |
471 | struct dwarf2_per_cu_data *read_in_chain; | |
472 | ||
69d751e3 | 473 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
474 | struct dwarf2_per_cu_data *per_cu; |
475 | ||
476 | /* How many compilation units ago was this CU last referenced? */ | |
477 | int last_used; | |
478 | ||
b64f50a1 JK |
479 | /* A hash table of DIE cu_offset for following references with |
480 | die_info->offset.sect_off as hash. */ | |
51545339 | 481 | htab_t die_hash; |
10b3939b DJ |
482 | |
483 | /* Full DIEs if read in. */ | |
484 | struct die_info *dies; | |
485 | ||
486 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
487 | units referenced by this one. Only set during full symbol processing; | |
488 | partial symbol tables do not have dependencies. */ | |
489 | htab_t dependencies; | |
490 | ||
cb1df416 DJ |
491 | /* Header data from the line table, during full symbol processing. */ |
492 | struct line_header *line_header; | |
493 | ||
3da10d80 KS |
494 | /* A list of methods which need to have physnames computed |
495 | after all type information has been read. */ | |
496 | VEC (delayed_method_info) *method_list; | |
497 | ||
96408a79 SA |
498 | /* To be copied to symtab->call_site_htab. */ |
499 | htab_t call_site_htab; | |
500 | ||
034e5797 DE |
501 | /* Non-NULL if this CU came from a DWO file. |
502 | There is an invariant here that is important to remember: | |
503 | Except for attributes copied from the top level DIE in the "main" | |
504 | (or "stub") file in preparation for reading the DWO file | |
505 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
506 | Either there isn't a DWO file (in which case this is NULL and the point | |
507 | is moot), or there is and either we're not going to read it (in which | |
508 | case this is NULL) or there is and we are reading it (in which case this | |
509 | is non-NULL). */ | |
3019eac3 DE |
510 | struct dwo_unit *dwo_unit; |
511 | ||
512 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
513 | (zero is a valid value though). | |
1dbab08b | 514 | Note this value comes from the Fission stub CU/TU's DIE. */ |
3019eac3 DE |
515 | ULONGEST addr_base; |
516 | ||
2e3cf129 DE |
517 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
518 | (zero is a valid value though). | |
1dbab08b | 519 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 520 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
521 | be used without needing to know whether DWO files are in use or not. |
522 | N.B. This does not apply to DW_AT_ranges appearing in | |
523 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
524 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
525 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
526 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
527 | ULONGEST ranges_base; |
528 | ||
ae038cb0 DJ |
529 | /* Mark used when releasing cached dies. */ |
530 | unsigned int mark : 1; | |
531 | ||
8be455d7 JK |
532 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
533 | This test is imperfect as there may exist optimized debug code not using | |
534 | any location list and still facing inlining issues if handled as | |
535 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 536 | unsigned int has_loclist : 1; |
ba919b58 | 537 | |
1b80a9fa JK |
538 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
539 | if all the producer_is_* fields are valid. This information is cached | |
540 | because profiling CU expansion showed excessive time spent in | |
541 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
542 | unsigned int checked_producer : 1; |
543 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 544 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 545 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
546 | |
547 | /* When set, the file that we're processing is known to have | |
548 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
549 | this information, but later versions do. */ | |
550 | ||
551 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
552 | }; |
553 | ||
10b3939b DJ |
554 | /* Persistent data held for a compilation unit, even when not |
555 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 556 | read_symtab_private field of the psymtab. */ |
10b3939b | 557 | |
ae038cb0 DJ |
558 | struct dwarf2_per_cu_data |
559 | { | |
36586728 | 560 | /* The start offset and length of this compilation unit. |
45452591 | 561 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
562 | initial_length_size. |
563 | If the DIE refers to a DWO file, this is always of the original die, | |
564 | not the DWO file. */ | |
b64f50a1 | 565 | sect_offset offset; |
36586728 | 566 | unsigned int length; |
ae038cb0 DJ |
567 | |
568 | /* Flag indicating this compilation unit will be read in before | |
569 | any of the current compilation units are processed. */ | |
c764a876 | 570 | unsigned int queued : 1; |
ae038cb0 | 571 | |
0d99eb77 DE |
572 | /* This flag will be set when reading partial DIEs if we need to load |
573 | absolutely all DIEs for this compilation unit, instead of just the ones | |
574 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
575 | hash table and don't find it. */ |
576 | unsigned int load_all_dies : 1; | |
577 | ||
0186c6a7 DE |
578 | /* Non-zero if this CU is from .debug_types. |
579 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
580 | this is non-zero. */ | |
3019eac3 DE |
581 | unsigned int is_debug_types : 1; |
582 | ||
36586728 TT |
583 | /* Non-zero if this CU is from the .dwz file. */ |
584 | unsigned int is_dwz : 1; | |
585 | ||
a2ce51a0 DE |
586 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
587 | This flag is only valid if is_debug_types is true. | |
588 | We can't read a CU directly from a DWO file: There are required | |
589 | attributes in the stub. */ | |
590 | unsigned int reading_dwo_directly : 1; | |
591 | ||
7ee85ab1 DE |
592 | /* Non-zero if the TU has been read. |
593 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
594 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
595 | fetching them from random other DWOs (due to comdat folding). | |
596 | If the TU has already been read, the optimization is unnecessary | |
597 | (and unwise - we don't want to change where gdb thinks the TU lives | |
598 | "midflight"). | |
599 | This flag is only valid if is_debug_types is true. */ | |
600 | unsigned int tu_read : 1; | |
601 | ||
3019eac3 DE |
602 | /* The section this CU/TU lives in. |
603 | If the DIE refers to a DWO file, this is always the original die, | |
604 | not the DWO file. */ | |
8a0459fd | 605 | struct dwarf2_section_info *section; |
348e048f | 606 | |
17ea53c3 JK |
607 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
608 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 609 | struct dwarf2_cu *cu; |
1c379e20 | 610 | |
9cdd5dbd DE |
611 | /* The corresponding objfile. |
612 | Normally we can get the objfile from dwarf2_per_objfile. | |
613 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
614 | struct objfile *objfile; |
615 | ||
fffbe6a8 YQ |
616 | /* When dwarf2_per_objfile->using_index is true, the 'quick' field |
617 | is active. Otherwise, the 'psymtab' field is active. */ | |
9291a0cd TT |
618 | union |
619 | { | |
620 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 621 | or NULL for unread partial units. */ |
9291a0cd TT |
622 | struct partial_symtab *psymtab; |
623 | ||
624 | /* Data needed by the "quick" functions. */ | |
625 | struct dwarf2_per_cu_quick_data *quick; | |
626 | } v; | |
95554aad | 627 | |
796a7ff8 DE |
628 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
629 | while reading psymtabs, used to compute the psymtab dependencies, | |
630 | and then cleared. Then it is filled in again while reading full | |
631 | symbols, and only deleted when the objfile is destroyed. | |
632 | ||
633 | This is also used to work around a difference between the way gold | |
634 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
635 | is a gold bug. For symbols coming from TUs, gold records in the index | |
636 | the CU that includes the TU instead of the TU itself. This breaks | |
637 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
638 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
639 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
640 | we need to look in TU Z to find X. Fortunately, this is akin to | |
641 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
642 | .gdb_index version <=7 this also records the TUs that the CU referred | |
643 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
644 | indices so we only pay a price for gold generated indices. |
645 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 646 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
647 | }; |
648 | ||
348e048f DE |
649 | /* Entry in the signatured_types hash table. */ |
650 | ||
651 | struct signatured_type | |
652 | { | |
42e7ad6c | 653 | /* The "per_cu" object of this type. |
ac9ec31b | 654 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
655 | N.B.: This is the first member so that it's easy to convert pointers |
656 | between them. */ | |
657 | struct dwarf2_per_cu_data per_cu; | |
658 | ||
3019eac3 | 659 | /* The type's signature. */ |
348e048f DE |
660 | ULONGEST signature; |
661 | ||
3019eac3 | 662 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
663 | If this TU is a DWO stub and the definition lives in a DWO file |
664 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
665 | cu_offset type_offset_in_tu; |
666 | ||
667 | /* Offset in the section of the type's DIE. | |
668 | If the definition lives in a DWO file, this is the offset in the | |
669 | .debug_types.dwo section. | |
670 | The value is zero until the actual value is known. | |
671 | Zero is otherwise not a valid section offset. */ | |
672 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
673 | |
674 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
675 | can share them. This points to the containing symtab. */ | |
676 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
677 | |
678 | /* The type. | |
679 | The first time we encounter this type we fully read it in and install it | |
680 | in the symbol tables. Subsequent times we only need the type. */ | |
681 | struct type *type; | |
a2ce51a0 DE |
682 | |
683 | /* Containing DWO unit. | |
684 | This field is valid iff per_cu.reading_dwo_directly. */ | |
685 | struct dwo_unit *dwo_unit; | |
348e048f DE |
686 | }; |
687 | ||
0186c6a7 DE |
688 | typedef struct signatured_type *sig_type_ptr; |
689 | DEF_VEC_P (sig_type_ptr); | |
690 | ||
094b34ac DE |
691 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
692 | This includes type_unit_group and quick_file_names. */ | |
693 | ||
694 | struct stmt_list_hash | |
695 | { | |
696 | /* The DWO unit this table is from or NULL if there is none. */ | |
697 | struct dwo_unit *dwo_unit; | |
698 | ||
699 | /* Offset in .debug_line or .debug_line.dwo. */ | |
700 | sect_offset line_offset; | |
701 | }; | |
702 | ||
f4dc4d17 DE |
703 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
704 | an object of this type. */ | |
705 | ||
706 | struct type_unit_group | |
707 | { | |
0186c6a7 | 708 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
709 | To simplify things we create an artificial CU that "includes" all the |
710 | type units using this stmt_list so that the rest of the code still has | |
711 | a "per_cu" handle on the symtab. | |
712 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 713 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
714 | struct dwarf2_per_cu_data per_cu; |
715 | ||
0186c6a7 DE |
716 | /* The TUs that share this DW_AT_stmt_list entry. |
717 | This is added to while parsing type units to build partial symtabs, | |
718 | and is deleted afterwards and not used again. */ | |
719 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 720 | |
43f3e411 | 721 | /* The compunit symtab. |
094b34ac | 722 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
723 | so we create an essentially anonymous symtab as the compunit symtab. */ |
724 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 725 | |
094b34ac DE |
726 | /* The data used to construct the hash key. */ |
727 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
728 | |
729 | /* The number of symtabs from the line header. | |
730 | The value here must match line_header.num_file_names. */ | |
731 | unsigned int num_symtabs; | |
732 | ||
733 | /* The symbol tables for this TU (obtained from the files listed in | |
734 | DW_AT_stmt_list). | |
735 | WARNING: The order of entries here must match the order of entries | |
736 | in the line header. After the first TU using this type_unit_group, the | |
737 | line header for the subsequent TUs is recreated from this. This is done | |
738 | because we need to use the same symtabs for each TU using the same | |
739 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
740 | there's no guarantee the line header doesn't have duplicate entries. */ | |
741 | struct symtab **symtabs; | |
742 | }; | |
743 | ||
73869dc2 | 744 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
745 | |
746 | struct dwo_sections | |
747 | { | |
748 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
749 | struct dwarf2_section_info line; |
750 | struct dwarf2_section_info loc; | |
09262596 DE |
751 | struct dwarf2_section_info macinfo; |
752 | struct dwarf2_section_info macro; | |
3019eac3 DE |
753 | struct dwarf2_section_info str; |
754 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
755 | /* In the case of a virtual DWO file, these two are unused. */ |
756 | struct dwarf2_section_info info; | |
3019eac3 DE |
757 | VEC (dwarf2_section_info_def) *types; |
758 | }; | |
759 | ||
c88ee1f0 | 760 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
761 | |
762 | struct dwo_unit | |
763 | { | |
764 | /* Backlink to the containing struct dwo_file. */ | |
765 | struct dwo_file *dwo_file; | |
766 | ||
767 | /* The "id" that distinguishes this CU/TU. | |
768 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
769 | Since signatures came first, we stick with it for consistency. */ | |
770 | ULONGEST signature; | |
771 | ||
772 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 773 | struct dwarf2_section_info *section; |
3019eac3 | 774 | |
19ac8c2e | 775 | /* Same as dwarf2_per_cu_data:{offset,length} but in the DWO section. */ |
3019eac3 DE |
776 | sect_offset offset; |
777 | unsigned int length; | |
778 | ||
779 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
780 | cu_offset type_offset_in_tu; | |
781 | }; | |
782 | ||
73869dc2 DE |
783 | /* include/dwarf2.h defines the DWP section codes. |
784 | It defines a max value but it doesn't define a min value, which we | |
785 | use for error checking, so provide one. */ | |
786 | ||
787 | enum dwp_v2_section_ids | |
788 | { | |
789 | DW_SECT_MIN = 1 | |
790 | }; | |
791 | ||
80626a55 | 792 | /* Data for one DWO file. |
57d63ce2 DE |
793 | |
794 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
795 | appears in a DWP file). DWP files don't really have DWO files per se - | |
796 | comdat folding of types "loses" the DWO file they came from, and from | |
797 | a high level view DWP files appear to contain a mass of random types. | |
798 | However, to maintain consistency with the non-DWP case we pretend DWP | |
799 | files contain virtual DWO files, and we assign each TU with one virtual | |
800 | DWO file (generally based on the line and abbrev section offsets - | |
801 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
802 | |
803 | struct dwo_file | |
804 | { | |
0ac5b59e | 805 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
806 | For virtual DWO files the name is constructed from the section offsets |
807 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
808 | from related CU+TUs. */ | |
0ac5b59e DE |
809 | const char *dwo_name; |
810 | ||
811 | /* The DW_AT_comp_dir attribute. */ | |
812 | const char *comp_dir; | |
3019eac3 | 813 | |
80626a55 DE |
814 | /* The bfd, when the file is open. Otherwise this is NULL. |
815 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
816 | bfd *dbfd; | |
3019eac3 | 817 | |
73869dc2 DE |
818 | /* The sections that make up this DWO file. |
819 | Remember that for virtual DWO files in DWP V2, these are virtual | |
820 | sections (for lack of a better name). */ | |
3019eac3 DE |
821 | struct dwo_sections sections; |
822 | ||
19c3d4c9 DE |
823 | /* The CU in the file. |
824 | We only support one because having more than one requires hacking the | |
825 | dwo_name of each to match, which is highly unlikely to happen. | |
826 | Doing this means all TUs can share comp_dir: We also assume that | |
827 | DW_AT_comp_dir across all TUs in a DWO file will be identical. */ | |
828 | struct dwo_unit *cu; | |
3019eac3 DE |
829 | |
830 | /* Table of TUs in the file. | |
831 | Each element is a struct dwo_unit. */ | |
832 | htab_t tus; | |
833 | }; | |
834 | ||
80626a55 DE |
835 | /* These sections are what may appear in a DWP file. */ |
836 | ||
837 | struct dwp_sections | |
838 | { | |
73869dc2 | 839 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
840 | struct dwarf2_section_info str; |
841 | struct dwarf2_section_info cu_index; | |
842 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
843 | |
844 | /* These are only used by DWP version 2 files. | |
845 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
846 | sections are referenced by section number, and are not recorded here. | |
847 | In DWP version 2 there is at most one copy of all these sections, each | |
848 | section being (effectively) comprised of the concatenation of all of the | |
849 | individual sections that exist in the version 1 format. | |
850 | To keep the code simple we treat each of these concatenated pieces as a | |
851 | section itself (a virtual section?). */ | |
852 | struct dwarf2_section_info abbrev; | |
853 | struct dwarf2_section_info info; | |
854 | struct dwarf2_section_info line; | |
855 | struct dwarf2_section_info loc; | |
856 | struct dwarf2_section_info macinfo; | |
857 | struct dwarf2_section_info macro; | |
858 | struct dwarf2_section_info str_offsets; | |
859 | struct dwarf2_section_info types; | |
80626a55 DE |
860 | }; |
861 | ||
73869dc2 DE |
862 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
863 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 864 | |
73869dc2 | 865 | struct virtual_v1_dwo_sections |
80626a55 DE |
866 | { |
867 | struct dwarf2_section_info abbrev; | |
868 | struct dwarf2_section_info line; | |
869 | struct dwarf2_section_info loc; | |
870 | struct dwarf2_section_info macinfo; | |
871 | struct dwarf2_section_info macro; | |
872 | struct dwarf2_section_info str_offsets; | |
873 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 874 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
875 | struct dwarf2_section_info info_or_types; |
876 | }; | |
877 | ||
73869dc2 DE |
878 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
879 | In version 2, the sections of the DWO files are concatenated together | |
880 | and stored in one section of that name. Thus each ELF section contains | |
881 | several "virtual" sections. */ | |
882 | ||
883 | struct virtual_v2_dwo_sections | |
884 | { | |
885 | bfd_size_type abbrev_offset; | |
886 | bfd_size_type abbrev_size; | |
887 | ||
888 | bfd_size_type line_offset; | |
889 | bfd_size_type line_size; | |
890 | ||
891 | bfd_size_type loc_offset; | |
892 | bfd_size_type loc_size; | |
893 | ||
894 | bfd_size_type macinfo_offset; | |
895 | bfd_size_type macinfo_size; | |
896 | ||
897 | bfd_size_type macro_offset; | |
898 | bfd_size_type macro_size; | |
899 | ||
900 | bfd_size_type str_offsets_offset; | |
901 | bfd_size_type str_offsets_size; | |
902 | ||
903 | /* Each DWP hash table entry records one CU or one TU. | |
904 | That is recorded here, and copied to dwo_unit.section. */ | |
905 | bfd_size_type info_or_types_offset; | |
906 | bfd_size_type info_or_types_size; | |
907 | }; | |
908 | ||
80626a55 DE |
909 | /* Contents of DWP hash tables. */ |
910 | ||
911 | struct dwp_hash_table | |
912 | { | |
73869dc2 | 913 | uint32_t version, nr_columns; |
80626a55 | 914 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
915 | const gdb_byte *hash_table, *unit_table; |
916 | union | |
917 | { | |
918 | struct | |
919 | { | |
920 | const gdb_byte *indices; | |
921 | } v1; | |
922 | struct | |
923 | { | |
924 | /* This is indexed by column number and gives the id of the section | |
925 | in that column. */ | |
926 | #define MAX_NR_V2_DWO_SECTIONS \ | |
927 | (1 /* .debug_info or .debug_types */ \ | |
928 | + 1 /* .debug_abbrev */ \ | |
929 | + 1 /* .debug_line */ \ | |
930 | + 1 /* .debug_loc */ \ | |
931 | + 1 /* .debug_str_offsets */ \ | |
932 | + 1 /* .debug_macro or .debug_macinfo */) | |
933 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
934 | const gdb_byte *offsets; | |
935 | const gdb_byte *sizes; | |
936 | } v2; | |
937 | } section_pool; | |
80626a55 DE |
938 | }; |
939 | ||
940 | /* Data for one DWP file. */ | |
941 | ||
942 | struct dwp_file | |
943 | { | |
944 | /* Name of the file. */ | |
945 | const char *name; | |
946 | ||
73869dc2 DE |
947 | /* File format version. */ |
948 | int version; | |
949 | ||
93417882 | 950 | /* The bfd. */ |
80626a55 DE |
951 | bfd *dbfd; |
952 | ||
953 | /* Section info for this file. */ | |
954 | struct dwp_sections sections; | |
955 | ||
57d63ce2 | 956 | /* Table of CUs in the file. */ |
80626a55 DE |
957 | const struct dwp_hash_table *cus; |
958 | ||
959 | /* Table of TUs in the file. */ | |
960 | const struct dwp_hash_table *tus; | |
961 | ||
19ac8c2e DE |
962 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
963 | htab_t loaded_cus; | |
964 | htab_t loaded_tus; | |
80626a55 | 965 | |
73869dc2 DE |
966 | /* Table to map ELF section numbers to their sections. |
967 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
968 | unsigned int num_sections; |
969 | asection **elf_sections; | |
970 | }; | |
971 | ||
36586728 TT |
972 | /* This represents a '.dwz' file. */ |
973 | ||
974 | struct dwz_file | |
975 | { | |
976 | /* A dwz file can only contain a few sections. */ | |
977 | struct dwarf2_section_info abbrev; | |
978 | struct dwarf2_section_info info; | |
979 | struct dwarf2_section_info str; | |
980 | struct dwarf2_section_info line; | |
981 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 982 | struct dwarf2_section_info gdb_index; |
36586728 TT |
983 | |
984 | /* The dwz's BFD. */ | |
985 | bfd *dwz_bfd; | |
986 | }; | |
987 | ||
0963b4bd MS |
988 | /* Struct used to pass misc. parameters to read_die_and_children, et |
989 | al. which are used for both .debug_info and .debug_types dies. | |
990 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 991 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
992 | |
993 | struct die_reader_specs | |
994 | { | |
a32a8923 | 995 | /* The bfd of die_section. */ |
93311388 DE |
996 | bfd* abfd; |
997 | ||
998 | /* The CU of the DIE we are parsing. */ | |
999 | struct dwarf2_cu *cu; | |
1000 | ||
80626a55 | 1001 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1002 | struct dwo_file *dwo_file; |
1003 | ||
dee91e82 | 1004 | /* The section the die comes from. |
3019eac3 | 1005 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1006 | struct dwarf2_section_info *die_section; |
1007 | ||
1008 | /* die_section->buffer. */ | |
d521ce57 | 1009 | const gdb_byte *buffer; |
f664829e DE |
1010 | |
1011 | /* The end of the buffer. */ | |
1012 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1013 | |
1014 | /* The value of the DW_AT_comp_dir attribute. */ | |
1015 | const char *comp_dir; | |
93311388 DE |
1016 | }; |
1017 | ||
fd820528 | 1018 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1019 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1020 | const gdb_byte *info_ptr, |
dee91e82 DE |
1021 | struct die_info *comp_unit_die, |
1022 | int has_children, | |
1023 | void *data); | |
1024 | ||
debd256d JB |
1025 | /* The line number information for a compilation unit (found in the |
1026 | .debug_line section) begins with a "statement program header", | |
1027 | which contains the following information. */ | |
1028 | struct line_header | |
1029 | { | |
527f3840 JK |
1030 | /* Offset of line number information in .debug_line section. */ |
1031 | sect_offset offset; | |
1032 | ||
1033 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
1034 | unsigned offset_in_dwz : 1; | |
1035 | ||
debd256d JB |
1036 | unsigned int total_length; |
1037 | unsigned short version; | |
1038 | unsigned int header_length; | |
1039 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 1040 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
1041 | unsigned char default_is_stmt; |
1042 | int line_base; | |
1043 | unsigned char line_range; | |
1044 | unsigned char opcode_base; | |
1045 | ||
1046 | /* standard_opcode_lengths[i] is the number of operands for the | |
1047 | standard opcode whose value is i. This means that | |
1048 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1049 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
1050 | unsigned char *standard_opcode_lengths; | |
1051 | ||
1052 | /* The include_directories table. NOTE! These strings are not | |
1053 | allocated with xmalloc; instead, they are pointers into | |
1054 | debug_line_buffer. If you try to free them, `free' will get | |
1055 | indigestion. */ | |
1056 | unsigned int num_include_dirs, include_dirs_size; | |
d521ce57 | 1057 | const char **include_dirs; |
debd256d JB |
1058 | |
1059 | /* The file_names table. NOTE! These strings are not allocated | |
1060 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
1061 | Don't try to free them directly. */ | |
1062 | unsigned int num_file_names, file_names_size; | |
1063 | struct file_entry | |
c906108c | 1064 | { |
d521ce57 | 1065 | const char *name; |
debd256d JB |
1066 | unsigned int dir_index; |
1067 | unsigned int mod_time; | |
1068 | unsigned int length; | |
aaa75496 | 1069 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 1070 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
1071 | } *file_names; |
1072 | ||
1073 | /* The start and end of the statement program following this | |
6502dd73 | 1074 | header. These point into dwarf2_per_objfile->line_buffer. */ |
d521ce57 | 1075 | const gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 1076 | }; |
c906108c SS |
1077 | |
1078 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 1079 | need this much information. */ |
c906108c SS |
1080 | struct partial_die_info |
1081 | { | |
72bf9492 | 1082 | /* Offset of this DIE. */ |
b64f50a1 | 1083 | sect_offset offset; |
72bf9492 DJ |
1084 | |
1085 | /* DWARF-2 tag for this DIE. */ | |
1086 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1087 | ||
72bf9492 DJ |
1088 | /* Assorted flags describing the data found in this DIE. */ |
1089 | unsigned int has_children : 1; | |
1090 | unsigned int is_external : 1; | |
1091 | unsigned int is_declaration : 1; | |
1092 | unsigned int has_type : 1; | |
1093 | unsigned int has_specification : 1; | |
1094 | unsigned int has_pc_info : 1; | |
481860b3 | 1095 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
1096 | |
1097 | /* Flag set if the SCOPE field of this structure has been | |
1098 | computed. */ | |
1099 | unsigned int scope_set : 1; | |
1100 | ||
fa4028e9 JB |
1101 | /* Flag set if the DIE has a byte_size attribute. */ |
1102 | unsigned int has_byte_size : 1; | |
1103 | ||
98bfdba5 PA |
1104 | /* Flag set if any of the DIE's children are template arguments. */ |
1105 | unsigned int has_template_arguments : 1; | |
1106 | ||
abc72ce4 DE |
1107 | /* Flag set if fixup_partial_die has been called on this die. */ |
1108 | unsigned int fixup_called : 1; | |
1109 | ||
36586728 TT |
1110 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1111 | unsigned int is_dwz : 1; | |
1112 | ||
1113 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1114 | unsigned int spec_is_dwz : 1; | |
1115 | ||
72bf9492 | 1116 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1117 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1118 | const char *name; |
72bf9492 | 1119 | |
abc72ce4 DE |
1120 | /* The linkage name, if present. */ |
1121 | const char *linkage_name; | |
1122 | ||
72bf9492 DJ |
1123 | /* The scope to prepend to our children. This is generally |
1124 | allocated on the comp_unit_obstack, so will disappear | |
1125 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1126 | const char *scope; |
72bf9492 | 1127 | |
95554aad TT |
1128 | /* Some data associated with the partial DIE. The tag determines |
1129 | which field is live. */ | |
1130 | union | |
1131 | { | |
1132 | /* The location description associated with this DIE, if any. */ | |
1133 | struct dwarf_block *locdesc; | |
1134 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
1135 | sect_offset offset; | |
1136 | } d; | |
72bf9492 DJ |
1137 | |
1138 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1139 | CORE_ADDR lowpc; |
1140 | CORE_ADDR highpc; | |
72bf9492 | 1141 | |
93311388 | 1142 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1143 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1144 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1145 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1146 | const gdb_byte *sibling; |
72bf9492 DJ |
1147 | |
1148 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1149 | DW_AT_specification (or DW_AT_abstract_origin or | |
1150 | DW_AT_extension). */ | |
b64f50a1 | 1151 | sect_offset spec_offset; |
72bf9492 DJ |
1152 | |
1153 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1154 | if any. */ | |
1155 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1156 | }; |
1157 | ||
0963b4bd | 1158 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1159 | struct abbrev_info |
1160 | { | |
1161 | unsigned int number; /* number identifying abbrev */ | |
1162 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1163 | unsigned short has_children; /* boolean */ |
1164 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1165 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1166 | struct abbrev_info *next; /* next in chain */ | |
1167 | }; | |
1168 | ||
1169 | struct attr_abbrev | |
1170 | { | |
9d25dd43 DE |
1171 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1172 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
1173 | }; |
1174 | ||
433df2d4 DE |
1175 | /* Size of abbrev_table.abbrev_hash_table. */ |
1176 | #define ABBREV_HASH_SIZE 121 | |
1177 | ||
1178 | /* Top level data structure to contain an abbreviation table. */ | |
1179 | ||
1180 | struct abbrev_table | |
1181 | { | |
f4dc4d17 DE |
1182 | /* Where the abbrev table came from. |
1183 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1184 | sect_offset offset; |
1185 | ||
1186 | /* Storage for the abbrev table. */ | |
1187 | struct obstack abbrev_obstack; | |
1188 | ||
1189 | /* Hash table of abbrevs. | |
1190 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1191 | It could be statically allocated, but the previous code didn't so we | |
1192 | don't either. */ | |
1193 | struct abbrev_info **abbrevs; | |
1194 | }; | |
1195 | ||
0963b4bd | 1196 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1197 | struct attribute |
1198 | { | |
9d25dd43 | 1199 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1200 | ENUM_BITFIELD(dwarf_form) form : 15; |
1201 | ||
1202 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1203 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1204 | here for better struct attribute alignment. */ | |
1205 | unsigned int string_is_canonical : 1; | |
1206 | ||
b60c80d6 DJ |
1207 | union |
1208 | { | |
15d034d0 | 1209 | const char *str; |
b60c80d6 | 1210 | struct dwarf_block *blk; |
43bbcdc2 PH |
1211 | ULONGEST unsnd; |
1212 | LONGEST snd; | |
b60c80d6 | 1213 | CORE_ADDR addr; |
ac9ec31b | 1214 | ULONGEST signature; |
b60c80d6 DJ |
1215 | } |
1216 | u; | |
1217 | }; | |
1218 | ||
0963b4bd | 1219 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1220 | struct die_info |
1221 | { | |
76815b17 DE |
1222 | /* DWARF-2 tag for this DIE. */ |
1223 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1224 | ||
1225 | /* Number of attributes */ | |
98bfdba5 PA |
1226 | unsigned char num_attrs; |
1227 | ||
1228 | /* True if we're presently building the full type name for the | |
1229 | type derived from this DIE. */ | |
1230 | unsigned char building_fullname : 1; | |
76815b17 | 1231 | |
adde2bff DE |
1232 | /* True if this die is in process. PR 16581. */ |
1233 | unsigned char in_process : 1; | |
1234 | ||
76815b17 DE |
1235 | /* Abbrev number */ |
1236 | unsigned int abbrev; | |
1237 | ||
93311388 | 1238 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1239 | sect_offset offset; |
78ba4af6 JB |
1240 | |
1241 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1242 | points to this die's parent; CHILD points to the first child of | |
1243 | this node; and all the children of a given node are chained | |
4950bc1c | 1244 | together via their SIBLING fields. */ |
639d11d3 DC |
1245 | struct die_info *child; /* Its first child, if any. */ |
1246 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1247 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1248 | |
b60c80d6 DJ |
1249 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1250 | zero, but it's not common and zero-sized arrays are not | |
1251 | sufficiently portable C. */ | |
1252 | struct attribute attrs[1]; | |
c906108c SS |
1253 | }; |
1254 | ||
0963b4bd | 1255 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1256 | |
1257 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1258 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1259 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1260 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1261 | #define DW_SND(attr) ((attr)->u.snd) | |
1262 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1263 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1264 | |
0963b4bd | 1265 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1266 | struct dwarf_block |
1267 | { | |
56eb65bd | 1268 | size_t size; |
1d6edc3c JK |
1269 | |
1270 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1271 | const gdb_byte *data; |
c906108c SS |
1272 | }; |
1273 | ||
c906108c SS |
1274 | #ifndef ATTR_ALLOC_CHUNK |
1275 | #define ATTR_ALLOC_CHUNK 4 | |
1276 | #endif | |
1277 | ||
c906108c SS |
1278 | /* Allocate fields for structs, unions and enums in this size. */ |
1279 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1280 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1281 | #endif | |
1282 | ||
c906108c SS |
1283 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1284 | but this would require a corresponding change in unpack_field_as_long | |
1285 | and friends. */ | |
1286 | static int bits_per_byte = 8; | |
1287 | ||
1288 | /* The routines that read and process dies for a C struct or C++ class | |
1289 | pass lists of data member fields and lists of member function fields | |
1290 | in an instance of a field_info structure, as defined below. */ | |
1291 | struct field_info | |
c5aa993b | 1292 | { |
0963b4bd | 1293 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
1294 | struct nextfield |
1295 | { | |
1296 | struct nextfield *next; | |
1297 | int accessibility; | |
1298 | int virtuality; | |
1299 | struct field field; | |
1300 | } | |
7d0ccb61 | 1301 | *fields, *baseclasses; |
c906108c | 1302 | |
7d0ccb61 | 1303 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1304 | int nfields; |
c906108c | 1305 | |
c5aa993b JM |
1306 | /* Number of baseclasses. */ |
1307 | int nbaseclasses; | |
c906108c | 1308 | |
c5aa993b JM |
1309 | /* Set if the accesibility of one of the fields is not public. */ |
1310 | int non_public_fields; | |
c906108c | 1311 | |
c5aa993b JM |
1312 | /* Member function fields array, entries are allocated in the order they |
1313 | are encountered in the object file. */ | |
1314 | struct nextfnfield | |
1315 | { | |
1316 | struct nextfnfield *next; | |
1317 | struct fn_field fnfield; | |
1318 | } | |
1319 | *fnfields; | |
c906108c | 1320 | |
c5aa993b JM |
1321 | /* Member function fieldlist array, contains name of possibly overloaded |
1322 | member function, number of overloaded member functions and a pointer | |
1323 | to the head of the member function field chain. */ | |
1324 | struct fnfieldlist | |
1325 | { | |
15d034d0 | 1326 | const char *name; |
c5aa993b JM |
1327 | int length; |
1328 | struct nextfnfield *head; | |
1329 | } | |
1330 | *fnfieldlists; | |
c906108c | 1331 | |
c5aa993b JM |
1332 | /* Number of entries in the fnfieldlists array. */ |
1333 | int nfnfields; | |
98751a41 JK |
1334 | |
1335 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1336 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1337 | struct typedef_field_list | |
1338 | { | |
1339 | struct typedef_field field; | |
1340 | struct typedef_field_list *next; | |
1341 | } | |
1342 | *typedef_field_list; | |
1343 | unsigned typedef_field_list_count; | |
c5aa993b | 1344 | }; |
c906108c | 1345 | |
10b3939b DJ |
1346 | /* One item on the queue of compilation units to read in full symbols |
1347 | for. */ | |
1348 | struct dwarf2_queue_item | |
1349 | { | |
1350 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1351 | enum language pretend_language; |
10b3939b DJ |
1352 | struct dwarf2_queue_item *next; |
1353 | }; | |
1354 | ||
1355 | /* The current queue. */ | |
1356 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1357 | ||
ae038cb0 DJ |
1358 | /* Loaded secondary compilation units are kept in memory until they |
1359 | have not been referenced for the processing of this many | |
1360 | compilation units. Set this to zero to disable caching. Cache | |
1361 | sizes of up to at least twenty will improve startup time for | |
1362 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
1363 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
1364 | static void |
1365 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
1366 | struct cmd_list_element *c, const char *value) | |
1367 | { | |
3e43a32a MS |
1368 | fprintf_filtered (file, _("The upper bound on the age of cached " |
1369 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
1370 | value); |
1371 | } | |
4390d890 | 1372 | \f |
c906108c SS |
1373 | /* local function prototypes */ |
1374 | ||
a32a8923 DE |
1375 | static const char *get_section_name (const struct dwarf2_section_info *); |
1376 | ||
1377 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1378 | ||
4efb68b1 | 1379 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1380 | |
918dd910 JK |
1381 | static void dwarf2_find_base_address (struct die_info *die, |
1382 | struct dwarf2_cu *cu); | |
1383 | ||
0018ea6f DE |
1384 | static struct partial_symtab *create_partial_symtab |
1385 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1386 | ||
c67a9c90 | 1387 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1388 | |
72bf9492 DJ |
1389 | static void scan_partial_symbols (struct partial_die_info *, |
1390 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1391 | int, struct dwarf2_cu *); |
c906108c | 1392 | |
72bf9492 DJ |
1393 | static void add_partial_symbol (struct partial_die_info *, |
1394 | struct dwarf2_cu *); | |
63d06c5c | 1395 | |
72bf9492 DJ |
1396 | static void add_partial_namespace (struct partial_die_info *pdi, |
1397 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1398 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1399 | |
5d7cb8df | 1400 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1401 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1402 | struct dwarf2_cu *cu); |
1403 | ||
72bf9492 DJ |
1404 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1405 | struct dwarf2_cu *cu); | |
91c24f0a | 1406 | |
bc30ff58 JB |
1407 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1408 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1409 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1410 | |
257e7a09 YQ |
1411 | static void dwarf2_read_symtab (struct partial_symtab *, |
1412 | struct objfile *); | |
c906108c | 1413 | |
a14ed312 | 1414 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1415 | |
433df2d4 DE |
1416 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1417 | (const struct abbrev_table *, unsigned int); | |
1418 | ||
1419 | static struct abbrev_table *abbrev_table_read_table | |
1420 | (struct dwarf2_section_info *, sect_offset); | |
1421 | ||
1422 | static void abbrev_table_free (struct abbrev_table *); | |
1423 | ||
f4dc4d17 DE |
1424 | static void abbrev_table_free_cleanup (void *); |
1425 | ||
dee91e82 DE |
1426 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1427 | struct dwarf2_section_info *); | |
c906108c | 1428 | |
f3dd6933 | 1429 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1430 | |
d521ce57 | 1431 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1432 | |
dee91e82 | 1433 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1434 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1435 | |
d521ce57 TT |
1436 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1437 | struct partial_die_info *, | |
1438 | struct abbrev_info *, | |
1439 | unsigned int, | |
1440 | const gdb_byte *); | |
c906108c | 1441 | |
36586728 | 1442 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1443 | struct dwarf2_cu *); |
72bf9492 DJ |
1444 | |
1445 | static void fixup_partial_die (struct partial_die_info *, | |
1446 | struct dwarf2_cu *); | |
1447 | ||
d521ce57 TT |
1448 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1449 | struct attribute *, struct attr_abbrev *, | |
1450 | const gdb_byte *); | |
a8329558 | 1451 | |
a1855c1d | 1452 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1453 | |
a1855c1d | 1454 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1455 | |
a1855c1d | 1456 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1457 | |
a1855c1d | 1458 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1459 | |
a1855c1d | 1460 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1461 | |
d521ce57 | 1462 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1463 | unsigned int *); |
c906108c | 1464 | |
d521ce57 | 1465 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1466 | |
1467 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1468 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1469 | unsigned int *, unsigned int *); |
613e1657 | 1470 | |
d521ce57 TT |
1471 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1472 | const struct comp_unit_head *, | |
c764a876 DE |
1473 | unsigned int *); |
1474 | ||
d521ce57 | 1475 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1476 | |
f4dc4d17 DE |
1477 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1478 | sect_offset); | |
1479 | ||
d521ce57 | 1480 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1481 | |
d521ce57 | 1482 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1483 | |
d521ce57 TT |
1484 | static const char *read_indirect_string (bfd *, const gdb_byte *, |
1485 | const struct comp_unit_head *, | |
1486 | unsigned int *); | |
4bdf3d34 | 1487 | |
d521ce57 | 1488 | static const char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
36586728 | 1489 | |
d521ce57 | 1490 | static ULONGEST read_unsigned_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1491 | |
d521ce57 | 1492 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1493 | |
d521ce57 TT |
1494 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1495 | const gdb_byte *, | |
3019eac3 DE |
1496 | unsigned int *); |
1497 | ||
d521ce57 | 1498 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1499 | ULONGEST str_index); |
3019eac3 | 1500 | |
e142c38c | 1501 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1502 | |
e142c38c DJ |
1503 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1504 | struct dwarf2_cu *); | |
c906108c | 1505 | |
348e048f | 1506 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1507 | unsigned int); |
348e048f | 1508 | |
05cf31d1 JB |
1509 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1510 | struct dwarf2_cu *cu); | |
1511 | ||
e142c38c | 1512 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1513 | |
e142c38c | 1514 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1515 | struct dwarf2_cu **); |
63d06c5c | 1516 | |
debd256d JB |
1517 | static void free_line_header (struct line_header *lh); |
1518 | ||
3019eac3 DE |
1519 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1520 | struct dwarf2_cu *cu); | |
debd256d | 1521 | |
f3f5162e | 1522 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1523 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1524 | CORE_ADDR, int decode_mapping); |
c906108c | 1525 | |
4d663531 | 1526 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1527 | |
43f3e411 DE |
1528 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1529 | const char *, const char *, | |
1530 | CORE_ADDR); | |
f4dc4d17 | 1531 | |
a14ed312 | 1532 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1533 | struct dwarf2_cu *); |
c906108c | 1534 | |
34eaf542 TT |
1535 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1536 | struct dwarf2_cu *, struct symbol *); | |
1537 | ||
ff39bb5e | 1538 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1539 | struct dwarf2_cu *); |
c906108c | 1540 | |
ff39bb5e | 1541 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1542 | struct type *type, |
1543 | const char *name, | |
1544 | struct obstack *obstack, | |
12df843f | 1545 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1546 | const gdb_byte **bytes, |
98bfdba5 | 1547 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1548 | |
e7c27a73 | 1549 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1550 | |
b4ba55a1 JB |
1551 | static int need_gnat_info (struct dwarf2_cu *); |
1552 | ||
3e43a32a MS |
1553 | static struct type *die_descriptive_type (struct die_info *, |
1554 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1555 | |
1556 | static void set_descriptive_type (struct type *, struct die_info *, | |
1557 | struct dwarf2_cu *); | |
1558 | ||
e7c27a73 DJ |
1559 | static struct type *die_containing_type (struct die_info *, |
1560 | struct dwarf2_cu *); | |
c906108c | 1561 | |
ff39bb5e | 1562 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1563 | struct dwarf2_cu *); |
c906108c | 1564 | |
f792889a | 1565 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1566 | |
673bfd45 DE |
1567 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1568 | ||
0d5cff50 | 1569 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1570 | |
6e70227d | 1571 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1572 | const char *suffix, int physname, |
1573 | struct dwarf2_cu *cu); | |
63d06c5c | 1574 | |
e7c27a73 | 1575 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1576 | |
348e048f DE |
1577 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1578 | ||
e7c27a73 | 1579 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1580 | |
e7c27a73 | 1581 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1582 | |
96408a79 SA |
1583 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1584 | ||
ff013f42 JK |
1585 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1586 | struct dwarf2_cu *, struct partial_symtab *); | |
1587 | ||
a14ed312 | 1588 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1589 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1590 | struct partial_symtab *); | |
c906108c | 1591 | |
fae299cd DC |
1592 | static void get_scope_pc_bounds (struct die_info *, |
1593 | CORE_ADDR *, CORE_ADDR *, | |
1594 | struct dwarf2_cu *); | |
1595 | ||
801e3a5b JB |
1596 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1597 | CORE_ADDR, struct dwarf2_cu *); | |
1598 | ||
a14ed312 | 1599 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1600 | struct dwarf2_cu *); |
c906108c | 1601 | |
a14ed312 | 1602 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1603 | struct type *, struct dwarf2_cu *); |
c906108c | 1604 | |
a14ed312 | 1605 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1606 | struct die_info *, struct type *, |
e7c27a73 | 1607 | struct dwarf2_cu *); |
c906108c | 1608 | |
a14ed312 | 1609 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1610 | struct type *, |
1611 | struct dwarf2_cu *); | |
c906108c | 1612 | |
134d01f1 | 1613 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1614 | |
e7c27a73 | 1615 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1616 | |
e7c27a73 | 1617 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1618 | |
5d7cb8df JK |
1619 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1620 | ||
27aa8d6a SW |
1621 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1622 | ||
74921315 KS |
1623 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1624 | ||
f55ee35c JK |
1625 | static struct type *read_module_type (struct die_info *die, |
1626 | struct dwarf2_cu *cu); | |
1627 | ||
38d518c9 | 1628 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1629 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1630 | |
134d01f1 | 1631 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1632 | |
e7c27a73 | 1633 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1634 | |
6e70227d | 1635 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1636 | struct dwarf2_cu *); |
1637 | ||
bf6af496 | 1638 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1639 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1640 | struct die_info *); |
639d11d3 | 1641 | |
dee91e82 | 1642 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1643 | const gdb_byte *info_ptr, |
1644 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1645 | struct die_info *parent); |
1646 | ||
d521ce57 TT |
1647 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1648 | struct die_info **, const gdb_byte *, | |
1649 | int *, int); | |
3019eac3 | 1650 | |
d521ce57 TT |
1651 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1652 | struct die_info **, const gdb_byte *, | |
1653 | int *); | |
93311388 | 1654 | |
e7c27a73 | 1655 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1656 | |
15d034d0 TT |
1657 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1658 | struct obstack *); | |
71c25dea | 1659 | |
15d034d0 | 1660 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1661 | |
15d034d0 | 1662 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1663 | struct die_info *die, |
1664 | struct dwarf2_cu *cu); | |
1665 | ||
ca69b9e6 DE |
1666 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1667 | struct dwarf2_cu *cu); | |
1668 | ||
e142c38c | 1669 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1670 | struct dwarf2_cu **); |
9219021c | 1671 | |
f39c6ffd | 1672 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1673 | |
f39c6ffd | 1674 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1675 | |
f39c6ffd | 1676 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1677 | |
a14ed312 | 1678 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1679 | |
f39c6ffd | 1680 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1681 | |
f9aca02d | 1682 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1683 | |
d97bc12b DE |
1684 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1685 | ||
1686 | static void dump_die_for_error (struct die_info *); | |
1687 | ||
1688 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1689 | struct die_info *); | |
c906108c | 1690 | |
d97bc12b | 1691 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1692 | |
51545339 | 1693 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1694 | struct dwarf2_cu *); |
c906108c | 1695 | |
ff39bb5e | 1696 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1697 | |
ff39bb5e | 1698 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1699 | |
348e048f | 1700 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1701 | const struct attribute *, |
348e048f DE |
1702 | struct dwarf2_cu **); |
1703 | ||
10b3939b | 1704 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1705 | const struct attribute *, |
f2f0e013 | 1706 | struct dwarf2_cu **); |
c906108c | 1707 | |
348e048f | 1708 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1709 | const struct attribute *, |
348e048f DE |
1710 | struct dwarf2_cu **); |
1711 | ||
ac9ec31b DE |
1712 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1713 | struct dwarf2_cu *); | |
1714 | ||
1715 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1716 | const struct attribute *, |
ac9ec31b DE |
1717 | struct dwarf2_cu *); |
1718 | ||
e5fe5e75 | 1719 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1720 | |
52dc124a | 1721 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1722 | |
c906108c SS |
1723 | /* memory allocation interface */ |
1724 | ||
7b5a2f43 | 1725 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1726 | |
b60c80d6 | 1727 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1728 | |
43f3e411 | 1729 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1730 | |
6e5a29e1 | 1731 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1732 | |
6e5a29e1 | 1733 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1734 | |
6e5a29e1 | 1735 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1736 | |
6e5a29e1 | 1737 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1738 | |
8cf6f0b1 TT |
1739 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1740 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1741 | const struct attribute *attr); |
8cf6f0b1 | 1742 | |
ff39bb5e | 1743 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1744 | struct symbol *sym, |
f1e6e072 TT |
1745 | struct dwarf2_cu *cu, |
1746 | int is_block); | |
4c2df51b | 1747 | |
d521ce57 TT |
1748 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1749 | const gdb_byte *info_ptr, | |
1750 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1751 | |
72bf9492 DJ |
1752 | static void free_stack_comp_unit (void *); |
1753 | ||
72bf9492 DJ |
1754 | static hashval_t partial_die_hash (const void *item); |
1755 | ||
1756 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1757 | ||
ae038cb0 | 1758 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1759 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1760 | |
9816fde3 | 1761 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1762 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1763 | |
1764 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1765 | struct die_info *comp_unit_die, |
1766 | enum language pretend_language); | |
93311388 | 1767 | |
68dc6402 | 1768 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1769 | |
1770 | static void free_cached_comp_units (void *); | |
1771 | ||
1772 | static void age_cached_comp_units (void); | |
1773 | ||
dee91e82 | 1774 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1775 | |
f792889a DJ |
1776 | static struct type *set_die_type (struct die_info *, struct type *, |
1777 | struct dwarf2_cu *); | |
1c379e20 | 1778 | |
ae038cb0 DJ |
1779 | static void create_all_comp_units (struct objfile *); |
1780 | ||
0e50663e | 1781 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1782 | |
95554aad TT |
1783 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1784 | enum language); | |
10b3939b | 1785 | |
95554aad TT |
1786 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1787 | enum language); | |
10b3939b | 1788 | |
f4dc4d17 DE |
1789 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1790 | enum language); | |
1791 | ||
10b3939b DJ |
1792 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1793 | struct dwarf2_per_cu_data *); | |
1794 | ||
ae038cb0 DJ |
1795 | static void dwarf2_mark (struct dwarf2_cu *); |
1796 | ||
1797 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1798 | ||
b64f50a1 | 1799 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1800 | struct dwarf2_per_cu_data *); |
673bfd45 | 1801 | |
f792889a | 1802 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1803 | |
9291a0cd TT |
1804 | static void dwarf2_release_queue (void *dummy); |
1805 | ||
95554aad TT |
1806 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1807 | enum language pretend_language); | |
1808 | ||
a0f42c21 | 1809 | static void process_queue (void); |
9291a0cd TT |
1810 | |
1811 | static void find_file_and_directory (struct die_info *die, | |
1812 | struct dwarf2_cu *cu, | |
15d034d0 | 1813 | const char **name, const char **comp_dir); |
9291a0cd TT |
1814 | |
1815 | static char *file_full_name (int file, struct line_header *lh, | |
1816 | const char *comp_dir); | |
1817 | ||
d521ce57 | 1818 | static const gdb_byte *read_and_check_comp_unit_head |
36586728 TT |
1819 | (struct comp_unit_head *header, |
1820 | struct dwarf2_section_info *section, | |
d521ce57 | 1821 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
36586728 TT |
1822 | int is_debug_types_section); |
1823 | ||
fd820528 | 1824 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1825 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1826 | int use_existing_cu, int keep, | |
3019eac3 DE |
1827 | die_reader_func_ftype *die_reader_func, void *data); |
1828 | ||
dee91e82 DE |
1829 | static void init_cutu_and_read_dies_simple |
1830 | (struct dwarf2_per_cu_data *this_cu, | |
1831 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1832 | |
673bfd45 | 1833 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1834 | |
3019eac3 DE |
1835 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1836 | ||
57d63ce2 DE |
1837 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
1838 | (struct dwp_file *dwp_file, const char *comp_dir, | |
1839 | ULONGEST signature, int is_debug_types); | |
a2ce51a0 DE |
1840 | |
1841 | static struct dwp_file *get_dwp_file (void); | |
1842 | ||
3019eac3 | 1843 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1844 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1845 | |
1846 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1847 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1848 | |
89e63ee4 DE |
1849 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1850 | ||
3019eac3 DE |
1851 | static void free_dwo_file_cleanup (void *); |
1852 | ||
95554aad TT |
1853 | static void process_cu_includes (void); |
1854 | ||
1b80a9fa | 1855 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1856 | |
1857 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1858 | \f |
1859 | /* Various complaints about symbol reading that don't abort the process. */ | |
1860 | ||
1861 | static void | |
1862 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1863 | { | |
1864 | complaint (&symfile_complaints, | |
1865 | _("statement list doesn't fit in .debug_line section")); | |
1866 | } | |
1867 | ||
1868 | static void | |
1869 | dwarf2_debug_line_missing_file_complaint (void) | |
1870 | { | |
1871 | complaint (&symfile_complaints, | |
1872 | _(".debug_line section has line data without a file")); | |
1873 | } | |
1874 | ||
1875 | static void | |
1876 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1877 | { | |
1878 | complaint (&symfile_complaints, | |
1879 | _(".debug_line section has line " | |
1880 | "program sequence without an end")); | |
1881 | } | |
1882 | ||
1883 | static void | |
1884 | dwarf2_complex_location_expr_complaint (void) | |
1885 | { | |
1886 | complaint (&symfile_complaints, _("location expression too complex")); | |
1887 | } | |
1888 | ||
1889 | static void | |
1890 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1891 | int arg3) | |
1892 | { | |
1893 | complaint (&symfile_complaints, | |
1894 | _("const value length mismatch for '%s', got %d, expected %d"), | |
1895 | arg1, arg2, arg3); | |
1896 | } | |
1897 | ||
1898 | static void | |
1899 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1900 | { | |
1901 | complaint (&symfile_complaints, | |
1902 | _("debug info runs off end of %s section" | |
1903 | " [in module %s]"), | |
a32a8923 DE |
1904 | get_section_name (section), |
1905 | get_section_file_name (section)); | |
4390d890 | 1906 | } |
1b80a9fa | 1907 | |
4390d890 DE |
1908 | static void |
1909 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1910 | { | |
1911 | complaint (&symfile_complaints, | |
1912 | _("macro debug info contains a " | |
1913 | "malformed macro definition:\n`%s'"), | |
1914 | arg1); | |
1915 | } | |
1916 | ||
1917 | static void | |
1918 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1919 | { | |
1920 | complaint (&symfile_complaints, | |
1921 | _("invalid attribute class or form for '%s' in '%s'"), | |
1922 | arg1, arg2); | |
1923 | } | |
527f3840 JK |
1924 | |
1925 | /* Hash function for line_header_hash. */ | |
1926 | ||
1927 | static hashval_t | |
1928 | line_header_hash (const struct line_header *ofs) | |
1929 | { | |
1930 | return ofs->offset.sect_off ^ ofs->offset_in_dwz; | |
1931 | } | |
1932 | ||
1933 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1934 | ||
1935 | static hashval_t | |
1936 | line_header_hash_voidp (const void *item) | |
1937 | { | |
1938 | const struct line_header *ofs = item; | |
1939 | ||
1940 | return line_header_hash (ofs); | |
1941 | } | |
1942 | ||
1943 | /* Equality function for line_header_hash. */ | |
1944 | ||
1945 | static int | |
1946 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1947 | { | |
1948 | const struct line_header *ofs_lhs = item_lhs; | |
1949 | const struct line_header *ofs_rhs = item_rhs; | |
1950 | ||
1951 | return (ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off | |
1952 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); | |
1953 | } | |
1954 | ||
4390d890 | 1955 | \f |
9291a0cd TT |
1956 | #if WORDS_BIGENDIAN |
1957 | ||
1958 | /* Convert VALUE between big- and little-endian. */ | |
1959 | static offset_type | |
1960 | byte_swap (offset_type value) | |
1961 | { | |
1962 | offset_type result; | |
1963 | ||
1964 | result = (value & 0xff) << 24; | |
1965 | result |= (value & 0xff00) << 8; | |
1966 | result |= (value & 0xff0000) >> 8; | |
1967 | result |= (value & 0xff000000) >> 24; | |
1968 | return result; | |
1969 | } | |
1970 | ||
1971 | #define MAYBE_SWAP(V) byte_swap (V) | |
1972 | ||
1973 | #else | |
1974 | #define MAYBE_SWAP(V) (V) | |
1975 | #endif /* WORDS_BIGENDIAN */ | |
1976 | ||
31aa7e4e JB |
1977 | /* Read the given attribute value as an address, taking the attribute's |
1978 | form into account. */ | |
1979 | ||
1980 | static CORE_ADDR | |
1981 | attr_value_as_address (struct attribute *attr) | |
1982 | { | |
1983 | CORE_ADDR addr; | |
1984 | ||
1985 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
1986 | { | |
1987 | /* Aside from a few clearly defined exceptions, attributes that | |
1988 | contain an address must always be in DW_FORM_addr form. | |
1989 | Unfortunately, some compilers happen to be violating this | |
1990 | requirement by encoding addresses using other forms, such | |
1991 | as DW_FORM_data4 for example. For those broken compilers, | |
1992 | we try to do our best, without any guarantee of success, | |
1993 | to interpret the address correctly. It would also be nice | |
1994 | to generate a complaint, but that would require us to maintain | |
1995 | a list of legitimate cases where a non-address form is allowed, | |
1996 | as well as update callers to pass in at least the CU's DWARF | |
1997 | version. This is more overhead than what we're willing to | |
1998 | expand for a pretty rare case. */ | |
1999 | addr = DW_UNSND (attr); | |
2000 | } | |
2001 | else | |
2002 | addr = DW_ADDR (attr); | |
2003 | ||
2004 | return addr; | |
2005 | } | |
2006 | ||
9291a0cd TT |
2007 | /* The suffix for an index file. */ |
2008 | #define INDEX_SUFFIX ".gdb-index" | |
2009 | ||
c906108c | 2010 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2011 | information and return true if we have enough to do something. |
2012 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2013 | ELF names are used. */ | |
c906108c SS |
2014 | |
2015 | int | |
251d32d9 TG |
2016 | dwarf2_has_info (struct objfile *objfile, |
2017 | const struct dwarf2_debug_sections *names) | |
c906108c | 2018 | { |
be391dca TT |
2019 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
2020 | if (!dwarf2_per_objfile) | |
2021 | { | |
2022 | /* Initialize per-objfile state. */ | |
2023 | struct dwarf2_per_objfile *data | |
2024 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 2025 | |
be391dca TT |
2026 | memset (data, 0, sizeof (*data)); |
2027 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
2028 | dwarf2_per_objfile = data; | |
6502dd73 | 2029 | |
251d32d9 TG |
2030 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
2031 | (void *) names); | |
be391dca TT |
2032 | dwarf2_per_objfile->objfile = objfile; |
2033 | } | |
73869dc2 DE |
2034 | return (!dwarf2_per_objfile->info.is_virtual |
2035 | && dwarf2_per_objfile->info.s.asection != NULL | |
2036 | && !dwarf2_per_objfile->abbrev.is_virtual | |
2037 | && dwarf2_per_objfile->abbrev.s.asection != NULL); | |
2038 | } | |
2039 | ||
2040 | /* Return the containing section of virtual section SECTION. */ | |
2041 | ||
2042 | static struct dwarf2_section_info * | |
2043 | get_containing_section (const struct dwarf2_section_info *section) | |
2044 | { | |
2045 | gdb_assert (section->is_virtual); | |
2046 | return section->s.containing_section; | |
c906108c SS |
2047 | } |
2048 | ||
a32a8923 DE |
2049 | /* Return the bfd owner of SECTION. */ |
2050 | ||
2051 | static struct bfd * | |
2052 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2053 | { | |
73869dc2 DE |
2054 | if (section->is_virtual) |
2055 | { | |
2056 | section = get_containing_section (section); | |
2057 | gdb_assert (!section->is_virtual); | |
2058 | } | |
2059 | return section->s.asection->owner; | |
a32a8923 DE |
2060 | } |
2061 | ||
2062 | /* Return the bfd section of SECTION. | |
2063 | Returns NULL if the section is not present. */ | |
2064 | ||
2065 | static asection * | |
2066 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2067 | { | |
73869dc2 DE |
2068 | if (section->is_virtual) |
2069 | { | |
2070 | section = get_containing_section (section); | |
2071 | gdb_assert (!section->is_virtual); | |
2072 | } | |
2073 | return section->s.asection; | |
a32a8923 DE |
2074 | } |
2075 | ||
2076 | /* Return the name of SECTION. */ | |
2077 | ||
2078 | static const char * | |
2079 | get_section_name (const struct dwarf2_section_info *section) | |
2080 | { | |
2081 | asection *sectp = get_section_bfd_section (section); | |
2082 | ||
2083 | gdb_assert (sectp != NULL); | |
2084 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2085 | } | |
2086 | ||
2087 | /* Return the name of the file SECTION is in. */ | |
2088 | ||
2089 | static const char * | |
2090 | get_section_file_name (const struct dwarf2_section_info *section) | |
2091 | { | |
2092 | bfd *abfd = get_section_bfd_owner (section); | |
2093 | ||
2094 | return bfd_get_filename (abfd); | |
2095 | } | |
2096 | ||
2097 | /* Return the id of SECTION. | |
2098 | Returns 0 if SECTION doesn't exist. */ | |
2099 | ||
2100 | static int | |
2101 | get_section_id (const struct dwarf2_section_info *section) | |
2102 | { | |
2103 | asection *sectp = get_section_bfd_section (section); | |
2104 | ||
2105 | if (sectp == NULL) | |
2106 | return 0; | |
2107 | return sectp->id; | |
2108 | } | |
2109 | ||
2110 | /* Return the flags of SECTION. | |
73869dc2 | 2111 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2112 | |
2113 | static int | |
2114 | get_section_flags (const struct dwarf2_section_info *section) | |
2115 | { | |
2116 | asection *sectp = get_section_bfd_section (section); | |
2117 | ||
2118 | gdb_assert (sectp != NULL); | |
2119 | return bfd_get_section_flags (sectp->owner, sectp); | |
2120 | } | |
2121 | ||
251d32d9 TG |
2122 | /* When loading sections, we look either for uncompressed section or for |
2123 | compressed section names. */ | |
233a11ab CS |
2124 | |
2125 | static int | |
251d32d9 TG |
2126 | section_is_p (const char *section_name, |
2127 | const struct dwarf2_section_names *names) | |
233a11ab | 2128 | { |
251d32d9 TG |
2129 | if (names->normal != NULL |
2130 | && strcmp (section_name, names->normal) == 0) | |
2131 | return 1; | |
2132 | if (names->compressed != NULL | |
2133 | && strcmp (section_name, names->compressed) == 0) | |
2134 | return 1; | |
2135 | return 0; | |
233a11ab CS |
2136 | } |
2137 | ||
c906108c SS |
2138 | /* This function is mapped across the sections and remembers the |
2139 | offset and size of each of the debugging sections we are interested | |
2140 | in. */ | |
2141 | ||
2142 | static void | |
251d32d9 | 2143 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 2144 | { |
251d32d9 | 2145 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 2146 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
2147 | |
2148 | if (vnames == NULL) | |
2149 | names = &dwarf2_elf_names; | |
2150 | else | |
2151 | names = (const struct dwarf2_debug_sections *) vnames; | |
2152 | ||
dc7650b8 JK |
2153 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2154 | { | |
2155 | } | |
2156 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 2157 | { |
73869dc2 | 2158 | dwarf2_per_objfile->info.s.asection = sectp; |
dce234bc | 2159 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); |
c906108c | 2160 | } |
251d32d9 | 2161 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 2162 | { |
73869dc2 | 2163 | dwarf2_per_objfile->abbrev.s.asection = sectp; |
dce234bc | 2164 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); |
c906108c | 2165 | } |
251d32d9 | 2166 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 2167 | { |
73869dc2 | 2168 | dwarf2_per_objfile->line.s.asection = sectp; |
dce234bc | 2169 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); |
c906108c | 2170 | } |
251d32d9 | 2171 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 2172 | { |
73869dc2 | 2173 | dwarf2_per_objfile->loc.s.asection = sectp; |
dce234bc | 2174 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); |
c906108c | 2175 | } |
251d32d9 | 2176 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 2177 | { |
73869dc2 | 2178 | dwarf2_per_objfile->macinfo.s.asection = sectp; |
dce234bc | 2179 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); |
c906108c | 2180 | } |
cf2c3c16 TT |
2181 | else if (section_is_p (sectp->name, &names->macro)) |
2182 | { | |
73869dc2 | 2183 | dwarf2_per_objfile->macro.s.asection = sectp; |
cf2c3c16 TT |
2184 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); |
2185 | } | |
251d32d9 | 2186 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 2187 | { |
73869dc2 | 2188 | dwarf2_per_objfile->str.s.asection = sectp; |
dce234bc | 2189 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); |
c906108c | 2190 | } |
3019eac3 DE |
2191 | else if (section_is_p (sectp->name, &names->addr)) |
2192 | { | |
73869dc2 | 2193 | dwarf2_per_objfile->addr.s.asection = sectp; |
3019eac3 DE |
2194 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); |
2195 | } | |
251d32d9 | 2196 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 2197 | { |
73869dc2 | 2198 | dwarf2_per_objfile->frame.s.asection = sectp; |
dce234bc | 2199 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2200 | } |
251d32d9 | 2201 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 2202 | { |
73869dc2 | 2203 | dwarf2_per_objfile->eh_frame.s.asection = sectp; |
dc7650b8 | 2204 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2205 | } |
251d32d9 | 2206 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 2207 | { |
73869dc2 | 2208 | dwarf2_per_objfile->ranges.s.asection = sectp; |
dce234bc | 2209 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); |
af34e669 | 2210 | } |
251d32d9 | 2211 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 2212 | { |
8b70b953 TT |
2213 | struct dwarf2_section_info type_section; |
2214 | ||
2215 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 2216 | type_section.s.asection = sectp; |
8b70b953 TT |
2217 | type_section.size = bfd_get_section_size (sectp); |
2218 | ||
2219 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
2220 | &type_section); | |
348e048f | 2221 | } |
251d32d9 | 2222 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd | 2223 | { |
73869dc2 | 2224 | dwarf2_per_objfile->gdb_index.s.asection = sectp; |
9291a0cd TT |
2225 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); |
2226 | } | |
dce234bc | 2227 | |
72dca2f5 FR |
2228 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
2229 | && bfd_section_vma (abfd, sectp) == 0) | |
2230 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
2231 | } |
2232 | ||
fceca515 DE |
2233 | /* A helper function that decides whether a section is empty, |
2234 | or not present. */ | |
9e0ac564 TT |
2235 | |
2236 | static int | |
19ac8c2e | 2237 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2238 | { |
73869dc2 DE |
2239 | if (section->is_virtual) |
2240 | return section->size == 0; | |
2241 | return section->s.asection == NULL || section->size == 0; | |
9e0ac564 TT |
2242 | } |
2243 | ||
3019eac3 DE |
2244 | /* Read the contents of the section INFO. |
2245 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2246 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2247 | of the DWO file. | |
dce234bc | 2248 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2249 | |
dce234bc PP |
2250 | static void |
2251 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2252 | { |
a32a8923 | 2253 | asection *sectp; |
3019eac3 | 2254 | bfd *abfd; |
dce234bc | 2255 | gdb_byte *buf, *retbuf; |
c906108c | 2256 | |
be391dca TT |
2257 | if (info->readin) |
2258 | return; | |
dce234bc | 2259 | info->buffer = NULL; |
be391dca | 2260 | info->readin = 1; |
188dd5d6 | 2261 | |
9e0ac564 | 2262 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2263 | return; |
c906108c | 2264 | |
a32a8923 | 2265 | sectp = get_section_bfd_section (info); |
3019eac3 | 2266 | |
73869dc2 DE |
2267 | /* If this is a virtual section we need to read in the real one first. */ |
2268 | if (info->is_virtual) | |
2269 | { | |
2270 | struct dwarf2_section_info *containing_section = | |
2271 | get_containing_section (info); | |
2272 | ||
2273 | gdb_assert (sectp != NULL); | |
2274 | if ((sectp->flags & SEC_RELOC) != 0) | |
2275 | { | |
2276 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2277 | " supported in section %s [in module %s]"), | |
2278 | get_section_name (info), get_section_file_name (info)); | |
2279 | } | |
2280 | dwarf2_read_section (objfile, containing_section); | |
2281 | /* Other code should have already caught virtual sections that don't | |
2282 | fit. */ | |
2283 | gdb_assert (info->virtual_offset + info->size | |
2284 | <= containing_section->size); | |
2285 | /* If the real section is empty or there was a problem reading the | |
2286 | section we shouldn't get here. */ | |
2287 | gdb_assert (containing_section->buffer != NULL); | |
2288 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2289 | return; | |
2290 | } | |
2291 | ||
4bf44c1c TT |
2292 | /* If the section has relocations, we must read it ourselves. |
2293 | Otherwise we attach it to the BFD. */ | |
2294 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2295 | { |
d521ce57 | 2296 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2297 | return; |
dce234bc | 2298 | } |
dce234bc | 2299 | |
4bf44c1c TT |
2300 | buf = obstack_alloc (&objfile->objfile_obstack, info->size); |
2301 | info->buffer = buf; | |
dce234bc PP |
2302 | |
2303 | /* When debugging .o files, we may need to apply relocations; see | |
2304 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2305 | We never compress sections in .o files, so we only need to | |
2306 | try this when the section is not compressed. */ | |
ac8035ab | 2307 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2308 | if (retbuf != NULL) |
2309 | { | |
2310 | info->buffer = retbuf; | |
2311 | return; | |
2312 | } | |
2313 | ||
a32a8923 DE |
2314 | abfd = get_section_bfd_owner (info); |
2315 | gdb_assert (abfd != NULL); | |
2316 | ||
dce234bc PP |
2317 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2318 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2319 | { |
2320 | error (_("Dwarf Error: Can't read DWARF data" | |
2321 | " in section %s [in module %s]"), | |
2322 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2323 | } | |
dce234bc PP |
2324 | } |
2325 | ||
9e0ac564 TT |
2326 | /* A helper function that returns the size of a section in a safe way. |
2327 | If you are positive that the section has been read before using the | |
2328 | size, then it is safe to refer to the dwarf2_section_info object's | |
2329 | "size" field directly. In other cases, you must call this | |
2330 | function, because for compressed sections the size field is not set | |
2331 | correctly until the section has been read. */ | |
2332 | ||
2333 | static bfd_size_type | |
2334 | dwarf2_section_size (struct objfile *objfile, | |
2335 | struct dwarf2_section_info *info) | |
2336 | { | |
2337 | if (!info->readin) | |
2338 | dwarf2_read_section (objfile, info); | |
2339 | return info->size; | |
2340 | } | |
2341 | ||
dce234bc | 2342 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2343 | SECTION_NAME. */ |
af34e669 | 2344 | |
dce234bc | 2345 | void |
3017a003 TG |
2346 | dwarf2_get_section_info (struct objfile *objfile, |
2347 | enum dwarf2_section_enum sect, | |
d521ce57 | 2348 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2349 | bfd_size_type *sizep) |
2350 | { | |
2351 | struct dwarf2_per_objfile *data | |
2352 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
2353 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
2354 | |
2355 | /* We may see an objfile without any DWARF, in which case we just | |
2356 | return nothing. */ | |
2357 | if (data == NULL) | |
2358 | { | |
2359 | *sectp = NULL; | |
2360 | *bufp = NULL; | |
2361 | *sizep = 0; | |
2362 | return; | |
2363 | } | |
3017a003 TG |
2364 | switch (sect) |
2365 | { | |
2366 | case DWARF2_DEBUG_FRAME: | |
2367 | info = &data->frame; | |
2368 | break; | |
2369 | case DWARF2_EH_FRAME: | |
2370 | info = &data->eh_frame; | |
2371 | break; | |
2372 | default: | |
2373 | gdb_assert_not_reached ("unexpected section"); | |
2374 | } | |
dce234bc | 2375 | |
9e0ac564 | 2376 | dwarf2_read_section (objfile, info); |
dce234bc | 2377 | |
a32a8923 | 2378 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2379 | *bufp = info->buffer; |
2380 | *sizep = info->size; | |
2381 | } | |
2382 | ||
36586728 TT |
2383 | /* A helper function to find the sections for a .dwz file. */ |
2384 | ||
2385 | static void | |
2386 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2387 | { | |
2388 | struct dwz_file *dwz_file = arg; | |
2389 | ||
2390 | /* Note that we only support the standard ELF names, because .dwz | |
2391 | is ELF-only (at the time of writing). */ | |
2392 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2393 | { | |
73869dc2 | 2394 | dwz_file->abbrev.s.asection = sectp; |
36586728 TT |
2395 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2396 | } | |
2397 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2398 | { | |
73869dc2 | 2399 | dwz_file->info.s.asection = sectp; |
36586728 TT |
2400 | dwz_file->info.size = bfd_get_section_size (sectp); |
2401 | } | |
2402 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2403 | { | |
73869dc2 | 2404 | dwz_file->str.s.asection = sectp; |
36586728 TT |
2405 | dwz_file->str.size = bfd_get_section_size (sectp); |
2406 | } | |
2407 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2408 | { | |
73869dc2 | 2409 | dwz_file->line.s.asection = sectp; |
36586728 TT |
2410 | dwz_file->line.size = bfd_get_section_size (sectp); |
2411 | } | |
2412 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2413 | { | |
73869dc2 | 2414 | dwz_file->macro.s.asection = sectp; |
36586728 TT |
2415 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2416 | } | |
2ec9a5e0 TT |
2417 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2418 | { | |
73869dc2 | 2419 | dwz_file->gdb_index.s.asection = sectp; |
2ec9a5e0 TT |
2420 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2421 | } | |
36586728 TT |
2422 | } |
2423 | ||
4db1a1dc TT |
2424 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2425 | there is no .gnu_debugaltlink section in the file. Error if there | |
2426 | is such a section but the file cannot be found. */ | |
36586728 TT |
2427 | |
2428 | static struct dwz_file * | |
2429 | dwarf2_get_dwz_file (void) | |
2430 | { | |
4db1a1dc TT |
2431 | bfd *dwz_bfd; |
2432 | char *data; | |
36586728 TT |
2433 | struct cleanup *cleanup; |
2434 | const char *filename; | |
2435 | struct dwz_file *result; | |
acd13123 | 2436 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2437 | size_t buildid_len; |
2438 | bfd_byte *buildid; | |
36586728 TT |
2439 | |
2440 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2441 | return dwarf2_per_objfile->dwz_file; | |
2442 | ||
4db1a1dc TT |
2443 | bfd_set_error (bfd_error_no_error); |
2444 | data = bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
acd13123 | 2445 | &buildid_len_arg, &buildid); |
4db1a1dc TT |
2446 | if (data == NULL) |
2447 | { | |
2448 | if (bfd_get_error () == bfd_error_no_error) | |
2449 | return NULL; | |
2450 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2451 | bfd_errmsg (bfd_get_error ())); | |
2452 | } | |
36586728 | 2453 | cleanup = make_cleanup (xfree, data); |
dc294be5 | 2454 | make_cleanup (xfree, buildid); |
36586728 | 2455 | |
acd13123 TT |
2456 | buildid_len = (size_t) buildid_len_arg; |
2457 | ||
f9d83a0b | 2458 | filename = (const char *) data; |
36586728 TT |
2459 | if (!IS_ABSOLUTE_PATH (filename)) |
2460 | { | |
4262abfb | 2461 | char *abs = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); |
36586728 TT |
2462 | char *rel; |
2463 | ||
2464 | make_cleanup (xfree, abs); | |
2465 | abs = ldirname (abs); | |
2466 | make_cleanup (xfree, abs); | |
2467 | ||
2468 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2469 | make_cleanup (xfree, rel); | |
2470 | filename = rel; | |
2471 | } | |
2472 | ||
dc294be5 TT |
2473 | /* First try the file name given in the section. If that doesn't |
2474 | work, try to use the build-id instead. */ | |
36586728 | 2475 | dwz_bfd = gdb_bfd_open (filename, gnutarget, -1); |
dc294be5 | 2476 | if (dwz_bfd != NULL) |
36586728 | 2477 | { |
dc294be5 TT |
2478 | if (!build_id_verify (dwz_bfd, buildid_len, buildid)) |
2479 | { | |
2480 | gdb_bfd_unref (dwz_bfd); | |
2481 | dwz_bfd = NULL; | |
2482 | } | |
36586728 TT |
2483 | } |
2484 | ||
dc294be5 TT |
2485 | if (dwz_bfd == NULL) |
2486 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2487 | ||
2488 | if (dwz_bfd == NULL) | |
2489 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2490 | objfile_name (dwarf2_per_objfile->objfile)); | |
2491 | ||
36586728 TT |
2492 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
2493 | struct dwz_file); | |
2494 | result->dwz_bfd = dwz_bfd; | |
2495 | ||
2496 | bfd_map_over_sections (dwz_bfd, locate_dwz_sections, result); | |
2497 | ||
2498 | do_cleanups (cleanup); | |
2499 | ||
13aaf454 | 2500 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, dwz_bfd); |
8d2cc612 | 2501 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2502 | return result; |
2503 | } | |
9291a0cd | 2504 | \f |
7b9f3c50 DE |
2505 | /* DWARF quick_symbols_functions support. */ |
2506 | ||
2507 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2508 | unique line tables, so we maintain a separate table of all .debug_line | |
2509 | derived entries to support the sharing. | |
2510 | All the quick functions need is the list of file names. We discard the | |
2511 | line_header when we're done and don't need to record it here. */ | |
2512 | struct quick_file_names | |
2513 | { | |
094b34ac DE |
2514 | /* The data used to construct the hash key. */ |
2515 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2516 | |
2517 | /* The number of entries in file_names, real_names. */ | |
2518 | unsigned int num_file_names; | |
2519 | ||
2520 | /* The file names from the line table, after being run through | |
2521 | file_full_name. */ | |
2522 | const char **file_names; | |
2523 | ||
2524 | /* The file names from the line table after being run through | |
2525 | gdb_realpath. These are computed lazily. */ | |
2526 | const char **real_names; | |
2527 | }; | |
2528 | ||
2529 | /* When using the index (and thus not using psymtabs), each CU has an | |
2530 | object of this type. This is used to hold information needed by | |
2531 | the various "quick" methods. */ | |
2532 | struct dwarf2_per_cu_quick_data | |
2533 | { | |
2534 | /* The file table. This can be NULL if there was no file table | |
2535 | or it's currently not read in. | |
2536 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2537 | struct quick_file_names *file_names; | |
2538 | ||
2539 | /* The corresponding symbol table. This is NULL if symbols for this | |
2540 | CU have not yet been read. */ | |
43f3e411 | 2541 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2542 | |
2543 | /* A temporary mark bit used when iterating over all CUs in | |
2544 | expand_symtabs_matching. */ | |
2545 | unsigned int mark : 1; | |
2546 | ||
2547 | /* True if we've tried to read the file table and found there isn't one. | |
2548 | There will be no point in trying to read it again next time. */ | |
2549 | unsigned int no_file_data : 1; | |
2550 | }; | |
2551 | ||
094b34ac DE |
2552 | /* Utility hash function for a stmt_list_hash. */ |
2553 | ||
2554 | static hashval_t | |
2555 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2556 | { | |
2557 | hashval_t v = 0; | |
2558 | ||
2559 | if (stmt_list_hash->dwo_unit != NULL) | |
2560 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2561 | v += stmt_list_hash->line_offset.sect_off; | |
2562 | return v; | |
2563 | } | |
2564 | ||
2565 | /* Utility equality function for a stmt_list_hash. */ | |
2566 | ||
2567 | static int | |
2568 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2569 | const struct stmt_list_hash *rhs) | |
2570 | { | |
2571 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2572 | return 0; | |
2573 | if (lhs->dwo_unit != NULL | |
2574 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2575 | return 0; | |
2576 | ||
2577 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2578 | } | |
2579 | ||
7b9f3c50 DE |
2580 | /* Hash function for a quick_file_names. */ |
2581 | ||
2582 | static hashval_t | |
2583 | hash_file_name_entry (const void *e) | |
2584 | { | |
2585 | const struct quick_file_names *file_data = e; | |
2586 | ||
094b34ac | 2587 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2588 | } |
2589 | ||
2590 | /* Equality function for a quick_file_names. */ | |
2591 | ||
2592 | static int | |
2593 | eq_file_name_entry (const void *a, const void *b) | |
2594 | { | |
2595 | const struct quick_file_names *ea = a; | |
2596 | const struct quick_file_names *eb = b; | |
2597 | ||
094b34ac | 2598 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2599 | } |
2600 | ||
2601 | /* Delete function for a quick_file_names. */ | |
2602 | ||
2603 | static void | |
2604 | delete_file_name_entry (void *e) | |
2605 | { | |
2606 | struct quick_file_names *file_data = e; | |
2607 | int i; | |
2608 | ||
2609 | for (i = 0; i < file_data->num_file_names; ++i) | |
2610 | { | |
2611 | xfree ((void*) file_data->file_names[i]); | |
2612 | if (file_data->real_names) | |
2613 | xfree ((void*) file_data->real_names[i]); | |
2614 | } | |
2615 | ||
2616 | /* The space for the struct itself lives on objfile_obstack, | |
2617 | so we don't free it here. */ | |
2618 | } | |
2619 | ||
2620 | /* Create a quick_file_names hash table. */ | |
2621 | ||
2622 | static htab_t | |
2623 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2624 | { | |
2625 | return htab_create_alloc (nr_initial_entries, | |
2626 | hash_file_name_entry, eq_file_name_entry, | |
2627 | delete_file_name_entry, xcalloc, xfree); | |
2628 | } | |
9291a0cd | 2629 | |
918dd910 JK |
2630 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2631 | have to be created afterwards. You should call age_cached_comp_units after | |
2632 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2633 | ||
2634 | static void | |
2635 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2636 | { | |
3019eac3 | 2637 | if (per_cu->is_debug_types) |
e5fe5e75 | 2638 | load_full_type_unit (per_cu); |
918dd910 | 2639 | else |
95554aad | 2640 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2641 | |
918dd910 | 2642 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2643 | |
2644 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2645 | } |
2646 | ||
a0f42c21 | 2647 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2648 | |
9291a0cd | 2649 | static void |
a0f42c21 | 2650 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2651 | { |
2652 | struct cleanup *back_to; | |
2653 | ||
f4dc4d17 DE |
2654 | /* Skip type_unit_groups, reading the type units they contain |
2655 | is handled elsewhere. */ | |
2656 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2657 | return; | |
2658 | ||
9291a0cd TT |
2659 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2660 | ||
95554aad | 2661 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2662 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2663 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2664 | { | |
2665 | queue_comp_unit (per_cu, language_minimal); | |
2666 | load_cu (per_cu); | |
89e63ee4 DE |
2667 | |
2668 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2669 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2670 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2671 | if (!per_cu->is_debug_types | |
2672 | && per_cu->cu->dwo_unit != NULL | |
2673 | && dwarf2_per_objfile->index_table != NULL | |
2674 | && dwarf2_per_objfile->index_table->version <= 7 | |
2675 | /* DWP files aren't supported yet. */ | |
2676 | && get_dwp_file () == NULL) | |
2677 | queue_and_load_all_dwo_tus (per_cu); | |
95554aad | 2678 | } |
9291a0cd | 2679 | |
a0f42c21 | 2680 | process_queue (); |
9291a0cd TT |
2681 | |
2682 | /* Age the cache, releasing compilation units that have not | |
2683 | been used recently. */ | |
2684 | age_cached_comp_units (); | |
2685 | ||
2686 | do_cleanups (back_to); | |
2687 | } | |
2688 | ||
2689 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2690 | the objfile from which this CU came. Returns the resulting symbol | |
2691 | table. */ | |
2fdf6df6 | 2692 | |
43f3e411 | 2693 | static struct compunit_symtab * |
a0f42c21 | 2694 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2695 | { |
95554aad | 2696 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2697 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
2698 | { |
2699 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2700 | increment_reading_symtab (); | |
a0f42c21 | 2701 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2702 | process_cu_includes (); |
9291a0cd TT |
2703 | do_cleanups (back_to); |
2704 | } | |
f194fefb | 2705 | |
43f3e411 | 2706 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2707 | } |
2708 | ||
8832e7e3 | 2709 | /* Return the CU/TU given its index. |
f4dc4d17 DE |
2710 | |
2711 | This is intended for loops like: | |
2712 | ||
2713 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2714 | + dwarf2_per_objfile->n_type_units); ++i) | |
2715 | { | |
8832e7e3 | 2716 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
f4dc4d17 DE |
2717 | |
2718 | ...; | |
2719 | } | |
2720 | */ | |
2fdf6df6 | 2721 | |
1fd400ff | 2722 | static struct dwarf2_per_cu_data * |
8832e7e3 | 2723 | dw2_get_cutu (int index) |
1fd400ff TT |
2724 | { |
2725 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2726 | { | |
f4dc4d17 | 2727 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2728 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2729 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2730 | } |
2731 | ||
2732 | return dwarf2_per_objfile->all_comp_units[index]; | |
2733 | } | |
2734 | ||
8832e7e3 DE |
2735 | /* Return the CU given its index. |
2736 | This differs from dw2_get_cutu in that it's for when you know INDEX | |
2737 | refers to a CU. */ | |
f4dc4d17 DE |
2738 | |
2739 | static struct dwarf2_per_cu_data * | |
8832e7e3 | 2740 | dw2_get_cu (int index) |
f4dc4d17 | 2741 | { |
8832e7e3 | 2742 | gdb_assert (index >= 0 && index < dwarf2_per_objfile->n_comp_units); |
f4dc4d17 | 2743 | |
1fd400ff TT |
2744 | return dwarf2_per_objfile->all_comp_units[index]; |
2745 | } | |
2746 | ||
2ec9a5e0 TT |
2747 | /* A helper for create_cus_from_index that handles a given list of |
2748 | CUs. */ | |
2fdf6df6 | 2749 | |
74a0d9f6 | 2750 | static void |
2ec9a5e0 TT |
2751 | create_cus_from_index_list (struct objfile *objfile, |
2752 | const gdb_byte *cu_list, offset_type n_elements, | |
2753 | struct dwarf2_section_info *section, | |
2754 | int is_dwz, | |
2755 | int base_offset) | |
9291a0cd TT |
2756 | { |
2757 | offset_type i; | |
9291a0cd | 2758 | |
2ec9a5e0 | 2759 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2760 | { |
2761 | struct dwarf2_per_cu_data *the_cu; | |
2762 | ULONGEST offset, length; | |
2763 | ||
74a0d9f6 JK |
2764 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2765 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2766 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2767 | cu_list += 2 * 8; |
2768 | ||
2769 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2770 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2771 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2772 | the_cu->length = length; |
2773 | the_cu->objfile = objfile; | |
8a0459fd | 2774 | the_cu->section = section; |
9291a0cd TT |
2775 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2776 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2777 | the_cu->is_dwz = is_dwz; |
2778 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2779 | } |
9291a0cd TT |
2780 | } |
2781 | ||
2ec9a5e0 | 2782 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2783 | the CU objects for this objfile. */ |
2ec9a5e0 | 2784 | |
74a0d9f6 | 2785 | static void |
2ec9a5e0 TT |
2786 | create_cus_from_index (struct objfile *objfile, |
2787 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2788 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2789 | { | |
2790 | struct dwz_file *dwz; | |
2791 | ||
2792 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
2793 | dwarf2_per_objfile->all_comp_units | |
2794 | = obstack_alloc (&objfile->objfile_obstack, | |
2795 | dwarf2_per_objfile->n_comp_units | |
2796 | * sizeof (struct dwarf2_per_cu_data *)); | |
2797 | ||
74a0d9f6 JK |
2798 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2799 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2800 | |
2801 | if (dwz_elements == 0) | |
74a0d9f6 | 2802 | return; |
2ec9a5e0 TT |
2803 | |
2804 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2805 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2806 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2807 | } |
2808 | ||
1fd400ff | 2809 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2810 | |
74a0d9f6 | 2811 | static void |
673bfd45 | 2812 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2813 | struct dwarf2_section_info *section, |
673bfd45 DE |
2814 | const gdb_byte *bytes, |
2815 | offset_type elements) | |
1fd400ff TT |
2816 | { |
2817 | offset_type i; | |
673bfd45 | 2818 | htab_t sig_types_hash; |
1fd400ff | 2819 | |
6aa5f3a6 DE |
2820 | dwarf2_per_objfile->n_type_units |
2821 | = dwarf2_per_objfile->n_allocated_type_units | |
2822 | = elements / 3; | |
d467dd73 | 2823 | dwarf2_per_objfile->all_type_units |
a2ce51a0 DE |
2824 | = xmalloc (dwarf2_per_objfile->n_type_units |
2825 | * sizeof (struct signatured_type *)); | |
1fd400ff | 2826 | |
673bfd45 | 2827 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2828 | |
2829 | for (i = 0; i < elements; i += 3) | |
2830 | { | |
52dc124a DE |
2831 | struct signatured_type *sig_type; |
2832 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2833 | void **slot; |
2834 | ||
74a0d9f6 JK |
2835 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2836 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2837 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2838 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2839 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2840 | bytes += 3 * 8; | |
2841 | ||
52dc124a | 2842 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2843 | struct signatured_type); |
52dc124a | 2844 | sig_type->signature = signature; |
3019eac3 DE |
2845 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2846 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 2847 | sig_type->per_cu.section = section; |
52dc124a DE |
2848 | sig_type->per_cu.offset.sect_off = offset; |
2849 | sig_type->per_cu.objfile = objfile; | |
2850 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2851 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2852 | struct dwarf2_per_cu_quick_data); | |
2853 | ||
52dc124a DE |
2854 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2855 | *slot = sig_type; | |
1fd400ff | 2856 | |
b4dd5633 | 2857 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2858 | } |
2859 | ||
673bfd45 | 2860 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2861 | } |
2862 | ||
9291a0cd TT |
2863 | /* Read the address map data from the mapped index, and use it to |
2864 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2865 | |
9291a0cd TT |
2866 | static void |
2867 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2868 | { | |
3e29f34a | 2869 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd TT |
2870 | const gdb_byte *iter, *end; |
2871 | struct obstack temp_obstack; | |
2872 | struct addrmap *mutable_map; | |
2873 | struct cleanup *cleanup; | |
2874 | CORE_ADDR baseaddr; | |
2875 | ||
2876 | obstack_init (&temp_obstack); | |
2877 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2878 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2879 | ||
2880 | iter = index->address_table; | |
2881 | end = iter + index->address_table_size; | |
2882 | ||
2883 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2884 | ||
2885 | while (iter < end) | |
2886 | { | |
2887 | ULONGEST hi, lo, cu_index; | |
2888 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2889 | iter += 8; | |
2890 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2891 | iter += 8; | |
2892 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2893 | iter += 4; | |
f652bce2 | 2894 | |
24a55014 | 2895 | if (lo > hi) |
f652bce2 | 2896 | { |
24a55014 DE |
2897 | complaint (&symfile_complaints, |
2898 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 2899 | hex_string (lo), hex_string (hi)); |
24a55014 | 2900 | continue; |
f652bce2 | 2901 | } |
24a55014 DE |
2902 | |
2903 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
2904 | { |
2905 | complaint (&symfile_complaints, | |
2906 | _(".gdb_index address table has invalid CU number %u"), | |
2907 | (unsigned) cu_index); | |
24a55014 | 2908 | continue; |
f652bce2 | 2909 | } |
24a55014 | 2910 | |
3e29f34a MR |
2911 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
2912 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
2913 | addrmap_set_empty (mutable_map, lo, hi - 1, dw2_get_cutu (cu_index)); | |
9291a0cd TT |
2914 | } |
2915 | ||
2916 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2917 | &objfile->objfile_obstack); | |
2918 | do_cleanups (cleanup); | |
2919 | } | |
2920 | ||
59d7bcaf JK |
2921 | /* The hash function for strings in the mapped index. This is the same as |
2922 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2923 | implementation. This is necessary because the hash function is tied to the | |
2924 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2925 | SYMBOL_HASH_NEXT. |
2926 | ||
2927 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2928 | |
9291a0cd | 2929 | static hashval_t |
559a7a62 | 2930 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2931 | { |
2932 | const unsigned char *str = (const unsigned char *) p; | |
2933 | hashval_t r = 0; | |
2934 | unsigned char c; | |
2935 | ||
2936 | while ((c = *str++) != 0) | |
559a7a62 JK |
2937 | { |
2938 | if (index_version >= 5) | |
2939 | c = tolower (c); | |
2940 | r = r * 67 + c - 113; | |
2941 | } | |
9291a0cd TT |
2942 | |
2943 | return r; | |
2944 | } | |
2945 | ||
2946 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2947 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2948 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2949 | |
9291a0cd TT |
2950 | static int |
2951 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2952 | offset_type **vec_out) | |
2953 | { | |
0cf03b49 JK |
2954 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2955 | offset_type hash; | |
9291a0cd | 2956 | offset_type slot, step; |
559a7a62 | 2957 | int (*cmp) (const char *, const char *); |
9291a0cd | 2958 | |
0cf03b49 JK |
2959 | if (current_language->la_language == language_cplus |
2960 | || current_language->la_language == language_java | |
2961 | || current_language->la_language == language_fortran) | |
2962 | { | |
2963 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2964 | not contain any. */ | |
a8719064 | 2965 | |
72998fb3 | 2966 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2967 | { |
72998fb3 | 2968 | char *without_params = cp_remove_params (name); |
0cf03b49 | 2969 | |
72998fb3 DE |
2970 | if (without_params != NULL) |
2971 | { | |
2972 | make_cleanup (xfree, without_params); | |
2973 | name = without_params; | |
2974 | } | |
0cf03b49 JK |
2975 | } |
2976 | } | |
2977 | ||
559a7a62 | 2978 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2979 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2980 | simulate our NAME being searched is also lowercased. */ |
2981 | hash = mapped_index_string_hash ((index->version == 4 | |
2982 | && case_sensitivity == case_sensitive_off | |
2983 | ? 5 : index->version), | |
2984 | name); | |
2985 | ||
3876f04e DE |
2986 | slot = hash & (index->symbol_table_slots - 1); |
2987 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2988 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2989 | |
2990 | for (;;) | |
2991 | { | |
2992 | /* Convert a slot number to an offset into the table. */ | |
2993 | offset_type i = 2 * slot; | |
2994 | const char *str; | |
3876f04e | 2995 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2996 | { |
2997 | do_cleanups (back_to); | |
2998 | return 0; | |
2999 | } | |
9291a0cd | 3000 | |
3876f04e | 3001 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 3002 | if (!cmp (name, str)) |
9291a0cd TT |
3003 | { |
3004 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 3005 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 3006 | do_cleanups (back_to); |
9291a0cd TT |
3007 | return 1; |
3008 | } | |
3009 | ||
3876f04e | 3010 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
3011 | } |
3012 | } | |
3013 | ||
2ec9a5e0 TT |
3014 | /* A helper function that reads the .gdb_index from SECTION and fills |
3015 | in MAP. FILENAME is the name of the file containing the section; | |
3016 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
3017 | ok to use deprecated sections. | |
3018 | ||
3019 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3020 | out parameters that are filled in with information about the CU and | |
3021 | TU lists in the section. | |
3022 | ||
3023 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3024 | |
9291a0cd | 3025 | static int |
2ec9a5e0 TT |
3026 | read_index_from_section (struct objfile *objfile, |
3027 | const char *filename, | |
3028 | int deprecated_ok, | |
3029 | struct dwarf2_section_info *section, | |
3030 | struct mapped_index *map, | |
3031 | const gdb_byte **cu_list, | |
3032 | offset_type *cu_list_elements, | |
3033 | const gdb_byte **types_list, | |
3034 | offset_type *types_list_elements) | |
9291a0cd | 3035 | { |
948f8e3d | 3036 | const gdb_byte *addr; |
2ec9a5e0 | 3037 | offset_type version; |
b3b272e1 | 3038 | offset_type *metadata; |
1fd400ff | 3039 | int i; |
9291a0cd | 3040 | |
2ec9a5e0 | 3041 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3042 | return 0; |
82430852 JK |
3043 | |
3044 | /* Older elfutils strip versions could keep the section in the main | |
3045 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3046 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3047 | return 0; |
3048 | ||
2ec9a5e0 | 3049 | dwarf2_read_section (objfile, section); |
9291a0cd | 3050 | |
2ec9a5e0 | 3051 | addr = section->buffer; |
9291a0cd | 3052 | /* Version check. */ |
1fd400ff | 3053 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3054 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3055 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3056 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3057 | indices. */ |
831adc1f | 3058 | if (version < 4) |
481860b3 GB |
3059 | { |
3060 | static int warning_printed = 0; | |
3061 | if (!warning_printed) | |
3062 | { | |
3063 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3064 | filename); |
481860b3 GB |
3065 | warning_printed = 1; |
3066 | } | |
3067 | return 0; | |
3068 | } | |
3069 | /* Index version 4 uses a different hash function than index version | |
3070 | 5 and later. | |
3071 | ||
3072 | Versions earlier than 6 did not emit psymbols for inlined | |
3073 | functions. Using these files will cause GDB not to be able to | |
3074 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3075 | indices unless the user has done |
3076 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3077 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3078 | { |
3079 | static int warning_printed = 0; | |
3080 | if (!warning_printed) | |
3081 | { | |
e615022a DE |
3082 | warning (_("\ |
3083 | Skipping deprecated .gdb_index section in %s.\n\ | |
3084 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3085 | to use the section anyway."), | |
2ec9a5e0 | 3086 | filename); |
481860b3 GB |
3087 | warning_printed = 1; |
3088 | } | |
3089 | return 0; | |
3090 | } | |
796a7ff8 | 3091 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3092 | of the TU (for symbols coming from TUs), |
3093 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3094 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3095 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3096 | These are just performance bugs, and we can't distinguish gdb-generated | |
3097 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3098 | |
481860b3 | 3099 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3100 | longer backward compatible. */ |
796a7ff8 | 3101 | if (version > 8) |
594e8718 | 3102 | return 0; |
9291a0cd | 3103 | |
559a7a62 | 3104 | map->version = version; |
2ec9a5e0 | 3105 | map->total_size = section->size; |
9291a0cd TT |
3106 | |
3107 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3108 | |
3109 | i = 0; | |
2ec9a5e0 TT |
3110 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3111 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3112 | / 8); | |
1fd400ff TT |
3113 | ++i; |
3114 | ||
2ec9a5e0 TT |
3115 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3116 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3117 | - MAYBE_SWAP (metadata[i])) | |
3118 | / 8); | |
987d643c | 3119 | ++i; |
1fd400ff TT |
3120 | |
3121 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3122 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3123 | - MAYBE_SWAP (metadata[i])); | |
3124 | ++i; | |
3125 | ||
3876f04e DE |
3126 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3127 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3128 | - MAYBE_SWAP (metadata[i])) | |
3129 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3130 | ++i; |
9291a0cd | 3131 | |
f9d83a0b | 3132 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3133 | |
2ec9a5e0 TT |
3134 | return 1; |
3135 | } | |
3136 | ||
3137 | ||
3138 | /* Read the index file. If everything went ok, initialize the "quick" | |
3139 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
3140 | ||
3141 | static int | |
3142 | dwarf2_read_index (struct objfile *objfile) | |
3143 | { | |
3144 | struct mapped_index local_map, *map; | |
3145 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3146 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3147 | struct dwz_file *dwz; |
2ec9a5e0 | 3148 | |
4262abfb | 3149 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3150 | use_deprecated_index_sections, |
3151 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3152 | &cu_list, &cu_list_elements, | |
3153 | &types_list, &types_list_elements)) | |
3154 | return 0; | |
3155 | ||
0fefef59 | 3156 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3157 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3158 | return 0; |
3159 | ||
2ec9a5e0 TT |
3160 | /* If there is a .dwz file, read it so we can get its CU list as |
3161 | well. */ | |
4db1a1dc TT |
3162 | dwz = dwarf2_get_dwz_file (); |
3163 | if (dwz != NULL) | |
2ec9a5e0 | 3164 | { |
2ec9a5e0 TT |
3165 | struct mapped_index dwz_map; |
3166 | const gdb_byte *dwz_types_ignore; | |
3167 | offset_type dwz_types_elements_ignore; | |
3168 | ||
3169 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3170 | 1, | |
3171 | &dwz->gdb_index, &dwz_map, | |
3172 | &dwz_list, &dwz_list_elements, | |
3173 | &dwz_types_ignore, | |
3174 | &dwz_types_elements_ignore)) | |
3175 | { | |
3176 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3177 | bfd_get_filename (dwz->dwz_bfd)); | |
3178 | return 0; | |
3179 | } | |
3180 | } | |
3181 | ||
74a0d9f6 JK |
3182 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3183 | dwz_list_elements); | |
1fd400ff | 3184 | |
8b70b953 TT |
3185 | if (types_list_elements) |
3186 | { | |
3187 | struct dwarf2_section_info *section; | |
3188 | ||
3189 | /* We can only handle a single .debug_types when we have an | |
3190 | index. */ | |
3191 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3192 | return 0; | |
3193 | ||
3194 | section = VEC_index (dwarf2_section_info_def, | |
3195 | dwarf2_per_objfile->types, 0); | |
3196 | ||
74a0d9f6 JK |
3197 | create_signatured_type_table_from_index (objfile, section, types_list, |
3198 | types_list_elements); | |
8b70b953 | 3199 | } |
9291a0cd | 3200 | |
2ec9a5e0 TT |
3201 | create_addrmap_from_index (objfile, &local_map); |
3202 | ||
3203 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
3204 | *map = local_map; | |
9291a0cd TT |
3205 | |
3206 | dwarf2_per_objfile->index_table = map; | |
3207 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3208 | dwarf2_per_objfile->quick_file_names_table = |
3209 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3210 | |
3211 | return 1; | |
3212 | } | |
3213 | ||
3214 | /* A helper for the "quick" functions which sets the global | |
3215 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3216 | |
9291a0cd TT |
3217 | static void |
3218 | dw2_setup (struct objfile *objfile) | |
3219 | { | |
3220 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
3221 | gdb_assert (dwarf2_per_objfile); | |
3222 | } | |
3223 | ||
dee91e82 | 3224 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3225 | |
dee91e82 DE |
3226 | static void |
3227 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3228 | const gdb_byte *info_ptr, |
dee91e82 DE |
3229 | struct die_info *comp_unit_die, |
3230 | int has_children, | |
3231 | void *data) | |
9291a0cd | 3232 | { |
dee91e82 DE |
3233 | struct dwarf2_cu *cu = reader->cu; |
3234 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3235 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3236 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 3237 | struct line_header *lh; |
9291a0cd | 3238 | struct attribute *attr; |
dee91e82 | 3239 | int i; |
15d034d0 | 3240 | const char *name, *comp_dir; |
7b9f3c50 DE |
3241 | void **slot; |
3242 | struct quick_file_names *qfn; | |
3243 | unsigned int line_offset; | |
9291a0cd | 3244 | |
0186c6a7 DE |
3245 | gdb_assert (! this_cu->is_debug_types); |
3246 | ||
07261596 TT |
3247 | /* Our callers never want to match partial units -- instead they |
3248 | will match the enclosing full CU. */ | |
3249 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3250 | { | |
3251 | this_cu->v.quick->no_file_data = 1; | |
3252 | return; | |
3253 | } | |
3254 | ||
0186c6a7 | 3255 | lh_cu = this_cu; |
7b9f3c50 DE |
3256 | lh = NULL; |
3257 | slot = NULL; | |
3258 | line_offset = 0; | |
dee91e82 DE |
3259 | |
3260 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
3261 | if (attr) |
3262 | { | |
7b9f3c50 DE |
3263 | struct quick_file_names find_entry; |
3264 | ||
3265 | line_offset = DW_UNSND (attr); | |
3266 | ||
3267 | /* We may have already read in this line header (TU line header sharing). | |
3268 | If we have we're done. */ | |
094b34ac DE |
3269 | find_entry.hash.dwo_unit = cu->dwo_unit; |
3270 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3271 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3272 | &find_entry, INSERT); | |
3273 | if (*slot != NULL) | |
3274 | { | |
094b34ac | 3275 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 3276 | return; |
7b9f3c50 DE |
3277 | } |
3278 | ||
3019eac3 | 3279 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3280 | } |
3281 | if (lh == NULL) | |
3282 | { | |
094b34ac | 3283 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3284 | return; |
9291a0cd TT |
3285 | } |
3286 | ||
7b9f3c50 | 3287 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
3288 | qfn->hash.dwo_unit = cu->dwo_unit; |
3289 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3290 | gdb_assert (slot != NULL); |
3291 | *slot = qfn; | |
9291a0cd | 3292 | |
dee91e82 | 3293 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 3294 | |
7b9f3c50 DE |
3295 | qfn->num_file_names = lh->num_file_names; |
3296 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
3297 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 3298 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
3299 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
3300 | qfn->real_names = NULL; | |
9291a0cd | 3301 | |
7b9f3c50 | 3302 | free_line_header (lh); |
7b9f3c50 | 3303 | |
094b34ac | 3304 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3305 | } |
3306 | ||
3307 | /* A helper for the "quick" functions which attempts to read the line | |
3308 | table for THIS_CU. */ | |
3309 | ||
3310 | static struct quick_file_names * | |
e4a48d9d | 3311 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3312 | { |
0186c6a7 DE |
3313 | /* This should never be called for TUs. */ |
3314 | gdb_assert (! this_cu->is_debug_types); | |
3315 | /* Nor type unit groups. */ | |
3316 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3317 | |
dee91e82 DE |
3318 | if (this_cu->v.quick->file_names != NULL) |
3319 | return this_cu->v.quick->file_names; | |
3320 | /* If we know there is no line data, no point in looking again. */ | |
3321 | if (this_cu->v.quick->no_file_data) | |
3322 | return NULL; | |
3323 | ||
0186c6a7 | 3324 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3325 | |
3326 | if (this_cu->v.quick->no_file_data) | |
3327 | return NULL; | |
3328 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3329 | } |
3330 | ||
3331 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3332 | real path for a given file name from the line table. */ |
2fdf6df6 | 3333 | |
9291a0cd | 3334 | static const char * |
7b9f3c50 DE |
3335 | dw2_get_real_path (struct objfile *objfile, |
3336 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3337 | { |
7b9f3c50 DE |
3338 | if (qfn->real_names == NULL) |
3339 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3340 | qfn->num_file_names, const char *); |
9291a0cd | 3341 | |
7b9f3c50 DE |
3342 | if (qfn->real_names[index] == NULL) |
3343 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 3344 | |
7b9f3c50 | 3345 | return qfn->real_names[index]; |
9291a0cd TT |
3346 | } |
3347 | ||
3348 | static struct symtab * | |
3349 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3350 | { | |
43f3e411 | 3351 | struct compunit_symtab *cust; |
9291a0cd | 3352 | int index; |
ae2de4f8 | 3353 | |
9291a0cd TT |
3354 | dw2_setup (objfile); |
3355 | index = dwarf2_per_objfile->n_comp_units - 1; | |
43f3e411 DE |
3356 | cust = dw2_instantiate_symtab (dw2_get_cutu (index)); |
3357 | if (cust == NULL) | |
3358 | return NULL; | |
3359 | return compunit_primary_filetab (cust); | |
9291a0cd TT |
3360 | } |
3361 | ||
7b9f3c50 DE |
3362 | /* Traversal function for dw2_forget_cached_source_info. */ |
3363 | ||
3364 | static int | |
3365 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3366 | { |
7b9f3c50 | 3367 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3368 | |
7b9f3c50 | 3369 | if (file_data->real_names) |
9291a0cd | 3370 | { |
7b9f3c50 | 3371 | int i; |
9291a0cd | 3372 | |
7b9f3c50 | 3373 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3374 | { |
7b9f3c50 DE |
3375 | xfree ((void*) file_data->real_names[i]); |
3376 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3377 | } |
3378 | } | |
7b9f3c50 DE |
3379 | |
3380 | return 1; | |
3381 | } | |
3382 | ||
3383 | static void | |
3384 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3385 | { | |
3386 | dw2_setup (objfile); | |
3387 | ||
3388 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3389 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3390 | } |
3391 | ||
f8eba3c6 TT |
3392 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3393 | the symtabs and calls the iterator. */ | |
3394 | ||
3395 | static int | |
3396 | dw2_map_expand_apply (struct objfile *objfile, | |
3397 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3398 | const char *name, const char *real_path, |
f8eba3c6 TT |
3399 | int (*callback) (struct symtab *, void *), |
3400 | void *data) | |
3401 | { | |
43f3e411 | 3402 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3403 | |
3404 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3405 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3406 | return 0; |
3407 | ||
3408 | /* This may expand more than one symtab, and we want to iterate over | |
3409 | all of them. */ | |
a0f42c21 | 3410 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3411 | |
f5b95b50 | 3412 | return iterate_over_some_symtabs (name, real_path, callback, data, |
43f3e411 | 3413 | objfile->compunit_symtabs, last_made); |
f8eba3c6 TT |
3414 | } |
3415 | ||
3416 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3417 | ||
9291a0cd | 3418 | static int |
f8eba3c6 | 3419 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3420 | const char *real_path, |
f8eba3c6 TT |
3421 | int (*callback) (struct symtab *, void *), |
3422 | void *data) | |
9291a0cd TT |
3423 | { |
3424 | int i; | |
c011a4f4 | 3425 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3426 | |
3427 | dw2_setup (objfile); | |
ae2de4f8 | 3428 | |
848e3e78 DE |
3429 | /* The rule is CUs specify all the files, including those used by |
3430 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3431 | |
848e3e78 | 3432 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3433 | { |
3434 | int j; | |
8832e7e3 | 3435 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3436 | struct quick_file_names *file_data; |
9291a0cd | 3437 | |
3d7bb9d9 | 3438 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3439 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3440 | continue; |
3441 | ||
e4a48d9d | 3442 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3443 | if (file_data == NULL) |
9291a0cd TT |
3444 | continue; |
3445 | ||
7b9f3c50 | 3446 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3447 | { |
7b9f3c50 | 3448 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3449 | const char *this_real_name; |
9291a0cd | 3450 | |
af529f8f | 3451 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3452 | { |
f5b95b50 | 3453 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3454 | callback, data)) |
3455 | return 1; | |
288e77a7 | 3456 | continue; |
4aac40c8 | 3457 | } |
9291a0cd | 3458 | |
c011a4f4 DE |
3459 | /* Before we invoke realpath, which can get expensive when many |
3460 | files are involved, do a quick comparison of the basenames. */ | |
3461 | if (! basenames_may_differ | |
3462 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3463 | continue; | |
3464 | ||
da235a7c JK |
3465 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3466 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3467 | { |
da235a7c JK |
3468 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3469 | callback, data)) | |
3470 | return 1; | |
288e77a7 | 3471 | continue; |
da235a7c | 3472 | } |
9291a0cd | 3473 | |
da235a7c JK |
3474 | if (real_path != NULL) |
3475 | { | |
af529f8f JK |
3476 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3477 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3478 | if (this_real_name != NULL |
af529f8f | 3479 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3480 | { |
f5b95b50 | 3481 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3482 | callback, data)) |
3483 | return 1; | |
288e77a7 | 3484 | continue; |
9291a0cd TT |
3485 | } |
3486 | } | |
3487 | } | |
3488 | } | |
3489 | ||
9291a0cd TT |
3490 | return 0; |
3491 | } | |
3492 | ||
da51c347 DE |
3493 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3494 | ||
3495 | struct dw2_symtab_iterator | |
9291a0cd | 3496 | { |
da51c347 DE |
3497 | /* The internalized form of .gdb_index. */ |
3498 | struct mapped_index *index; | |
3499 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3500 | int want_specific_block; | |
3501 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3502 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3503 | int block_index; | |
3504 | /* The kind of symbol we're looking for. */ | |
3505 | domain_enum domain; | |
3506 | /* The list of CUs from the index entry of the symbol, | |
3507 | or NULL if not found. */ | |
3508 | offset_type *vec; | |
3509 | /* The next element in VEC to look at. */ | |
3510 | int next; | |
3511 | /* The number of elements in VEC, or zero if there is no match. */ | |
3512 | int length; | |
8943b874 DE |
3513 | /* Have we seen a global version of the symbol? |
3514 | If so we can ignore all further global instances. | |
3515 | This is to work around gold/15646, inefficient gold-generated | |
3516 | indices. */ | |
3517 | int global_seen; | |
da51c347 | 3518 | }; |
9291a0cd | 3519 | |
da51c347 DE |
3520 | /* Initialize the index symtab iterator ITER. |
3521 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3522 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3523 | |
9291a0cd | 3524 | static void |
da51c347 DE |
3525 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3526 | struct mapped_index *index, | |
3527 | int want_specific_block, | |
3528 | int block_index, | |
3529 | domain_enum domain, | |
3530 | const char *name) | |
3531 | { | |
3532 | iter->index = index; | |
3533 | iter->want_specific_block = want_specific_block; | |
3534 | iter->block_index = block_index; | |
3535 | iter->domain = domain; | |
3536 | iter->next = 0; | |
8943b874 | 3537 | iter->global_seen = 0; |
da51c347 DE |
3538 | |
3539 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3540 | iter->length = MAYBE_SWAP (*iter->vec); | |
3541 | else | |
3542 | { | |
3543 | iter->vec = NULL; | |
3544 | iter->length = 0; | |
3545 | } | |
3546 | } | |
3547 | ||
3548 | /* Return the next matching CU or NULL if there are no more. */ | |
3549 | ||
3550 | static struct dwarf2_per_cu_data * | |
3551 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3552 | { | |
3553 | for ( ; iter->next < iter->length; ++iter->next) | |
3554 | { | |
3555 | offset_type cu_index_and_attrs = | |
3556 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3557 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 3558 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
3559 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3560 | /* This value is only valid for index versions >= 7. */ | |
3561 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3562 | gdb_index_symbol_kind symbol_kind = | |
3563 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3564 | /* Only check the symbol attributes if they're present. | |
3565 | Indices prior to version 7 don't record them, | |
3566 | and indices >= 7 may elide them for certain symbols | |
3567 | (gold does this). */ | |
3568 | int attrs_valid = | |
3569 | (iter->index->version >= 7 | |
3570 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3571 | ||
3190f0c6 DE |
3572 | /* Don't crash on bad data. */ |
3573 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3574 | + dwarf2_per_objfile->n_type_units)) | |
3575 | { | |
3576 | complaint (&symfile_complaints, | |
3577 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3578 | " [in module %s]"), |
3579 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3580 | continue; |
3581 | } | |
3582 | ||
8832e7e3 | 3583 | per_cu = dw2_get_cutu (cu_index); |
3190f0c6 | 3584 | |
da51c347 | 3585 | /* Skip if already read in. */ |
43f3e411 | 3586 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3587 | continue; |
3588 | ||
8943b874 DE |
3589 | /* Check static vs global. */ |
3590 | if (attrs_valid) | |
3591 | { | |
3592 | if (iter->want_specific_block | |
3593 | && want_static != is_static) | |
3594 | continue; | |
3595 | /* Work around gold/15646. */ | |
3596 | if (!is_static && iter->global_seen) | |
3597 | continue; | |
3598 | if (!is_static) | |
3599 | iter->global_seen = 1; | |
3600 | } | |
da51c347 DE |
3601 | |
3602 | /* Only check the symbol's kind if it has one. */ | |
3603 | if (attrs_valid) | |
3604 | { | |
3605 | switch (iter->domain) | |
3606 | { | |
3607 | case VAR_DOMAIN: | |
3608 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3609 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3610 | /* Some types are also in VAR_DOMAIN. */ | |
3611 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3612 | continue; | |
3613 | break; | |
3614 | case STRUCT_DOMAIN: | |
3615 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3616 | continue; | |
3617 | break; | |
3618 | case LABEL_DOMAIN: | |
3619 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3620 | continue; | |
3621 | break; | |
3622 | default: | |
3623 | break; | |
3624 | } | |
3625 | } | |
3626 | ||
3627 | ++iter->next; | |
3628 | return per_cu; | |
3629 | } | |
3630 | ||
3631 | return NULL; | |
3632 | } | |
3633 | ||
43f3e411 | 3634 | static struct compunit_symtab * |
da51c347 DE |
3635 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
3636 | const char *name, domain_enum domain) | |
9291a0cd | 3637 | { |
43f3e411 | 3638 | struct compunit_symtab *stab_best = NULL; |
156942c7 DE |
3639 | struct mapped_index *index; |
3640 | ||
9291a0cd TT |
3641 | dw2_setup (objfile); |
3642 | ||
156942c7 DE |
3643 | index = dwarf2_per_objfile->index_table; |
3644 | ||
da51c347 | 3645 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3646 | if (index) |
9291a0cd | 3647 | { |
da51c347 DE |
3648 | struct dw2_symtab_iterator iter; |
3649 | struct dwarf2_per_cu_data *per_cu; | |
3650 | ||
3651 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3652 | |
da51c347 | 3653 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3654 | { |
da51c347 | 3655 | struct symbol *sym = NULL; |
43f3e411 DE |
3656 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); |
3657 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
f194fefb | 3658 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 DE |
3659 | |
3660 | /* Some caution must be observed with overloaded functions | |
3661 | and methods, since the index will not contain any overload | |
3662 | information (but NAME might contain it). */ | |
f194fefb | 3663 | sym = block_lookup_symbol (block, name, domain); |
1fd400ff | 3664 | |
da51c347 DE |
3665 | if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) |
3666 | { | |
3667 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
3668 | return stab; | |
3669 | ||
3670 | stab_best = stab; | |
9291a0cd | 3671 | } |
da51c347 DE |
3672 | |
3673 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3674 | } |
3675 | } | |
9291a0cd | 3676 | |
da51c347 | 3677 | return stab_best; |
9291a0cd TT |
3678 | } |
3679 | ||
3680 | static void | |
3681 | dw2_print_stats (struct objfile *objfile) | |
3682 | { | |
e4a48d9d | 3683 | int i, total, count; |
9291a0cd TT |
3684 | |
3685 | dw2_setup (objfile); | |
e4a48d9d | 3686 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3687 | count = 0; |
e4a48d9d | 3688 | for (i = 0; i < total; ++i) |
9291a0cd | 3689 | { |
8832e7e3 | 3690 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3691 | |
43f3e411 | 3692 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3693 | ++count; |
3694 | } | |
e4a48d9d | 3695 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3696 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3697 | } | |
3698 | ||
779bd270 DE |
3699 | /* This dumps minimal information about the index. |
3700 | It is called via "mt print objfiles". | |
3701 | One use is to verify .gdb_index has been loaded by the | |
3702 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3703 | ||
9291a0cd TT |
3704 | static void |
3705 | dw2_dump (struct objfile *objfile) | |
3706 | { | |
779bd270 DE |
3707 | dw2_setup (objfile); |
3708 | gdb_assert (dwarf2_per_objfile->using_index); | |
3709 | printf_filtered (".gdb_index:"); | |
3710 | if (dwarf2_per_objfile->index_table != NULL) | |
3711 | { | |
3712 | printf_filtered (" version %d\n", | |
3713 | dwarf2_per_objfile->index_table->version); | |
3714 | } | |
3715 | else | |
3716 | printf_filtered (" faked for \"readnow\"\n"); | |
3717 | printf_filtered ("\n"); | |
9291a0cd TT |
3718 | } |
3719 | ||
3720 | static void | |
3189cb12 DE |
3721 | dw2_relocate (struct objfile *objfile, |
3722 | const struct section_offsets *new_offsets, | |
3723 | const struct section_offsets *delta) | |
9291a0cd TT |
3724 | { |
3725 | /* There's nothing to relocate here. */ | |
3726 | } | |
3727 | ||
3728 | static void | |
3729 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3730 | const char *func_name) | |
3731 | { | |
da51c347 DE |
3732 | struct mapped_index *index; |
3733 | ||
3734 | dw2_setup (objfile); | |
3735 | ||
3736 | index = dwarf2_per_objfile->index_table; | |
3737 | ||
3738 | /* index is NULL if OBJF_READNOW. */ | |
3739 | if (index) | |
3740 | { | |
3741 | struct dw2_symtab_iterator iter; | |
3742 | struct dwarf2_per_cu_data *per_cu; | |
3743 | ||
3744 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3745 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3746 | func_name); | |
3747 | ||
3748 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3749 | dw2_instantiate_symtab (per_cu); | |
3750 | } | |
9291a0cd TT |
3751 | } |
3752 | ||
3753 | static void | |
3754 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3755 | { | |
3756 | int i; | |
3757 | ||
3758 | dw2_setup (objfile); | |
1fd400ff TT |
3759 | |
3760 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3761 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3762 | { |
8832e7e3 | 3763 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3764 | |
a0f42c21 | 3765 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3766 | } |
3767 | } | |
3768 | ||
3769 | static void | |
652a8996 JK |
3770 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3771 | const char *fullname) | |
9291a0cd TT |
3772 | { |
3773 | int i; | |
3774 | ||
3775 | dw2_setup (objfile); | |
d4637a04 DE |
3776 | |
3777 | /* We don't need to consider type units here. | |
3778 | This is only called for examining code, e.g. expand_line_sal. | |
3779 | There can be an order of magnitude (or more) more type units | |
3780 | than comp units, and we avoid them if we can. */ | |
3781 | ||
3782 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3783 | { |
3784 | int j; | |
8832e7e3 | 3785 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
7b9f3c50 | 3786 | struct quick_file_names *file_data; |
9291a0cd | 3787 | |
3d7bb9d9 | 3788 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3789 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3790 | continue; |
3791 | ||
e4a48d9d | 3792 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3793 | if (file_data == NULL) |
9291a0cd TT |
3794 | continue; |
3795 | ||
7b9f3c50 | 3796 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3797 | { |
652a8996 JK |
3798 | const char *this_fullname = file_data->file_names[j]; |
3799 | ||
3800 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3801 | { |
a0f42c21 | 3802 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3803 | break; |
3804 | } | |
3805 | } | |
3806 | } | |
3807 | } | |
3808 | ||
9291a0cd | 3809 | static void |
ade7ed9e DE |
3810 | dw2_map_matching_symbols (struct objfile *objfile, |
3811 | const char * name, domain_enum namespace, | |
3812 | int global, | |
40658b94 PH |
3813 | int (*callback) (struct block *, |
3814 | struct symbol *, void *), | |
2edb89d3 JK |
3815 | void *data, symbol_compare_ftype *match, |
3816 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3817 | { |
40658b94 | 3818 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3819 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3820 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3821 | } |
3822 | ||
3823 | static void | |
f8eba3c6 TT |
3824 | dw2_expand_symtabs_matching |
3825 | (struct objfile *objfile, | |
206f2a57 DE |
3826 | expand_symtabs_file_matcher_ftype *file_matcher, |
3827 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, | |
276d885b | 3828 | expand_symtabs_exp_notify_ftype *expansion_notify, |
f8eba3c6 TT |
3829 | enum search_domain kind, |
3830 | void *data) | |
9291a0cd TT |
3831 | { |
3832 | int i; | |
3833 | offset_type iter; | |
4b5246aa | 3834 | struct mapped_index *index; |
9291a0cd TT |
3835 | |
3836 | dw2_setup (objfile); | |
ae2de4f8 DE |
3837 | |
3838 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3839 | if (!dwarf2_per_objfile->index_table) |
3840 | return; | |
4b5246aa | 3841 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3842 | |
7b08b9eb | 3843 | if (file_matcher != NULL) |
24c79950 TT |
3844 | { |
3845 | struct cleanup *cleanup; | |
3846 | htab_t visited_found, visited_not_found; | |
3847 | ||
3848 | visited_found = htab_create_alloc (10, | |
3849 | htab_hash_pointer, htab_eq_pointer, | |
3850 | NULL, xcalloc, xfree); | |
3851 | cleanup = make_cleanup_htab_delete (visited_found); | |
3852 | visited_not_found = htab_create_alloc (10, | |
3853 | htab_hash_pointer, htab_eq_pointer, | |
3854 | NULL, xcalloc, xfree); | |
3855 | make_cleanup_htab_delete (visited_not_found); | |
3856 | ||
848e3e78 DE |
3857 | /* The rule is CUs specify all the files, including those used by |
3858 | any TU, so there's no need to scan TUs here. */ | |
3859 | ||
3860 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3861 | { |
3862 | int j; | |
8832e7e3 | 3863 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
24c79950 TT |
3864 | struct quick_file_names *file_data; |
3865 | void **slot; | |
7b08b9eb | 3866 | |
24c79950 | 3867 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3868 | |
24c79950 | 3869 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3870 | if (per_cu->v.quick->compunit_symtab) |
24c79950 | 3871 | continue; |
7b08b9eb | 3872 | |
e4a48d9d | 3873 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3874 | if (file_data == NULL) |
3875 | continue; | |
7b08b9eb | 3876 | |
24c79950 TT |
3877 | if (htab_find (visited_not_found, file_data) != NULL) |
3878 | continue; | |
3879 | else if (htab_find (visited_found, file_data) != NULL) | |
3880 | { | |
3881 | per_cu->v.quick->mark = 1; | |
3882 | continue; | |
3883 | } | |
3884 | ||
3885 | for (j = 0; j < file_data->num_file_names; ++j) | |
3886 | { | |
da235a7c JK |
3887 | const char *this_real_name; |
3888 | ||
fbd9ab74 | 3889 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3890 | { |
3891 | per_cu->v.quick->mark = 1; | |
3892 | break; | |
3893 | } | |
da235a7c JK |
3894 | |
3895 | /* Before we invoke realpath, which can get expensive when many | |
3896 | files are involved, do a quick comparison of the basenames. */ | |
3897 | if (!basenames_may_differ | |
3898 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3899 | data, 1)) | |
3900 | continue; | |
3901 | ||
3902 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3903 | if (file_matcher (this_real_name, data, 0)) | |
3904 | { | |
3905 | per_cu->v.quick->mark = 1; | |
3906 | break; | |
3907 | } | |
24c79950 TT |
3908 | } |
3909 | ||
3910 | slot = htab_find_slot (per_cu->v.quick->mark | |
3911 | ? visited_found | |
3912 | : visited_not_found, | |
3913 | file_data, INSERT); | |
3914 | *slot = file_data; | |
3915 | } | |
3916 | ||
3917 | do_cleanups (cleanup); | |
3918 | } | |
9291a0cd | 3919 | |
3876f04e | 3920 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3921 | { |
3922 | offset_type idx = 2 * iter; | |
3923 | const char *name; | |
3924 | offset_type *vec, vec_len, vec_idx; | |
8943b874 | 3925 | int global_seen = 0; |
9291a0cd | 3926 | |
3876f04e | 3927 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3928 | continue; |
3929 | ||
3876f04e | 3930 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3931 | |
206f2a57 | 3932 | if (! (*symbol_matcher) (name, data)) |
9291a0cd TT |
3933 | continue; |
3934 | ||
3935 | /* The name was matched, now expand corresponding CUs that were | |
3936 | marked. */ | |
4b5246aa | 3937 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3938 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3939 | vec_len = MAYBE_SWAP (vec[0]); |
3940 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3941 | { | |
e254ef6a | 3942 | struct dwarf2_per_cu_data *per_cu; |
156942c7 | 3943 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
8943b874 DE |
3944 | /* This value is only valid for index versions >= 7. */ |
3945 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
156942c7 DE |
3946 | gdb_index_symbol_kind symbol_kind = |
3947 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3948 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 DE |
3949 | /* Only check the symbol attributes if they're present. |
3950 | Indices prior to version 7 don't record them, | |
3951 | and indices >= 7 may elide them for certain symbols | |
3952 | (gold does this). */ | |
3953 | int attrs_valid = | |
3954 | (index->version >= 7 | |
3955 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3956 | ||
8943b874 DE |
3957 | /* Work around gold/15646. */ |
3958 | if (attrs_valid) | |
3959 | { | |
3960 | if (!is_static && global_seen) | |
3961 | continue; | |
3962 | if (!is_static) | |
3963 | global_seen = 1; | |
3964 | } | |
3965 | ||
3190f0c6 DE |
3966 | /* Only check the symbol's kind if it has one. */ |
3967 | if (attrs_valid) | |
156942c7 DE |
3968 | { |
3969 | switch (kind) | |
3970 | { | |
3971 | case VARIABLES_DOMAIN: | |
3972 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3973 | continue; | |
3974 | break; | |
3975 | case FUNCTIONS_DOMAIN: | |
3976 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3977 | continue; | |
3978 | break; | |
3979 | case TYPES_DOMAIN: | |
3980 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3981 | continue; | |
3982 | break; | |
3983 | default: | |
3984 | break; | |
3985 | } | |
3986 | } | |
3987 | ||
3190f0c6 DE |
3988 | /* Don't crash on bad data. */ |
3989 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3990 | + dwarf2_per_objfile->n_type_units)) | |
3991 | { | |
3992 | complaint (&symfile_complaints, | |
3993 | _(".gdb_index entry has bad CU index" | |
4262abfb | 3994 | " [in module %s]"), objfile_name (objfile)); |
3190f0c6 DE |
3995 | continue; |
3996 | } | |
3997 | ||
8832e7e3 | 3998 | per_cu = dw2_get_cutu (cu_index); |
7b08b9eb | 3999 | if (file_matcher == NULL || per_cu->v.quick->mark) |
276d885b GB |
4000 | { |
4001 | int symtab_was_null = | |
4002 | (per_cu->v.quick->compunit_symtab == NULL); | |
4003 | ||
4004 | dw2_instantiate_symtab (per_cu); | |
4005 | ||
4006 | if (expansion_notify != NULL | |
4007 | && symtab_was_null | |
4008 | && per_cu->v.quick->compunit_symtab != NULL) | |
4009 | { | |
4010 | expansion_notify (per_cu->v.quick->compunit_symtab, | |
4011 | data); | |
4012 | } | |
4013 | } | |
9291a0cd TT |
4014 | } |
4015 | } | |
4016 | } | |
4017 | ||
43f3e411 | 4018 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific |
9703b513 TT |
4019 | symtab. */ |
4020 | ||
43f3e411 DE |
4021 | static struct compunit_symtab * |
4022 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4023 | CORE_ADDR pc) | |
9703b513 TT |
4024 | { |
4025 | int i; | |
4026 | ||
43f3e411 DE |
4027 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL |
4028 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4029 | return cust; | |
9703b513 | 4030 | |
43f3e411 | 4031 | if (cust->includes == NULL) |
a3ec0bb1 DE |
4032 | return NULL; |
4033 | ||
43f3e411 | 4034 | for (i = 0; cust->includes[i]; ++i) |
9703b513 | 4035 | { |
43f3e411 | 4036 | struct compunit_symtab *s = cust->includes[i]; |
9703b513 | 4037 | |
43f3e411 | 4038 | s = recursively_find_pc_sect_compunit_symtab (s, pc); |
9703b513 TT |
4039 | if (s != NULL) |
4040 | return s; | |
4041 | } | |
4042 | ||
4043 | return NULL; | |
4044 | } | |
4045 | ||
43f3e411 DE |
4046 | static struct compunit_symtab * |
4047 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4048 | struct bound_minimal_symbol msymbol, | |
4049 | CORE_ADDR pc, | |
4050 | struct obj_section *section, | |
4051 | int warn_if_readin) | |
9291a0cd TT |
4052 | { |
4053 | struct dwarf2_per_cu_data *data; | |
43f3e411 | 4054 | struct compunit_symtab *result; |
9291a0cd TT |
4055 | |
4056 | dw2_setup (objfile); | |
4057 | ||
4058 | if (!objfile->psymtabs_addrmap) | |
4059 | return NULL; | |
4060 | ||
4061 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
4062 | if (!data) | |
4063 | return NULL; | |
4064 | ||
43f3e411 | 4065 | if (warn_if_readin && data->v.quick->compunit_symtab) |
abebb8b0 | 4066 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
4067 | paddress (get_objfile_arch (objfile), pc)); |
4068 | ||
43f3e411 DE |
4069 | result |
4070 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
4071 | pc); | |
9703b513 TT |
4072 | gdb_assert (result != NULL); |
4073 | return result; | |
9291a0cd TT |
4074 | } |
4075 | ||
9291a0cd | 4076 | static void |
44b13c5a | 4077 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 4078 | void *data, int need_fullname) |
9291a0cd TT |
4079 | { |
4080 | int i; | |
24c79950 TT |
4081 | struct cleanup *cleanup; |
4082 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
4083 | NULL, xcalloc, xfree); | |
9291a0cd | 4084 | |
24c79950 | 4085 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 4086 | dw2_setup (objfile); |
ae2de4f8 | 4087 | |
848e3e78 DE |
4088 | /* The rule is CUs specify all the files, including those used by |
4089 | any TU, so there's no need to scan TUs here. | |
4090 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 4091 | |
848e3e78 | 4092 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 | 4093 | { |
8832e7e3 | 4094 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
24c79950 | 4095 | |
43f3e411 | 4096 | if (per_cu->v.quick->compunit_symtab) |
24c79950 TT |
4097 | { |
4098 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
4099 | INSERT); | |
4100 | ||
4101 | *slot = per_cu->v.quick->file_names; | |
4102 | } | |
4103 | } | |
4104 | ||
848e3e78 | 4105 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4106 | { |
4107 | int j; | |
8832e7e3 | 4108 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 4109 | struct quick_file_names *file_data; |
24c79950 | 4110 | void **slot; |
9291a0cd | 4111 | |
3d7bb9d9 | 4112 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4113 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4114 | continue; |
4115 | ||
e4a48d9d | 4116 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4117 | if (file_data == NULL) |
9291a0cd TT |
4118 | continue; |
4119 | ||
24c79950 TT |
4120 | slot = htab_find_slot (visited, file_data, INSERT); |
4121 | if (*slot) | |
4122 | { | |
4123 | /* Already visited. */ | |
4124 | continue; | |
4125 | } | |
4126 | *slot = file_data; | |
4127 | ||
7b9f3c50 | 4128 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4129 | { |
74e2f255 DE |
4130 | const char *this_real_name; |
4131 | ||
4132 | if (need_fullname) | |
4133 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4134 | else | |
4135 | this_real_name = NULL; | |
7b9f3c50 | 4136 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
4137 | } |
4138 | } | |
24c79950 TT |
4139 | |
4140 | do_cleanups (cleanup); | |
9291a0cd TT |
4141 | } |
4142 | ||
4143 | static int | |
4144 | dw2_has_symbols (struct objfile *objfile) | |
4145 | { | |
4146 | return 1; | |
4147 | } | |
4148 | ||
4149 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4150 | { | |
4151 | dw2_has_symbols, | |
4152 | dw2_find_last_source_symtab, | |
4153 | dw2_forget_cached_source_info, | |
f8eba3c6 | 4154 | dw2_map_symtabs_matching_filename, |
9291a0cd | 4155 | dw2_lookup_symbol, |
9291a0cd TT |
4156 | dw2_print_stats, |
4157 | dw2_dump, | |
4158 | dw2_relocate, | |
4159 | dw2_expand_symtabs_for_function, | |
4160 | dw2_expand_all_symtabs, | |
652a8996 | 4161 | dw2_expand_symtabs_with_fullname, |
40658b94 | 4162 | dw2_map_matching_symbols, |
9291a0cd | 4163 | dw2_expand_symtabs_matching, |
43f3e411 | 4164 | dw2_find_pc_sect_compunit_symtab, |
9291a0cd TT |
4165 | dw2_map_symbol_filenames |
4166 | }; | |
4167 | ||
4168 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
4169 | file will use psymtabs, or 1 if using the GNU index. */ | |
4170 | ||
4171 | int | |
4172 | dwarf2_initialize_objfile (struct objfile *objfile) | |
4173 | { | |
4174 | /* If we're about to read full symbols, don't bother with the | |
4175 | indices. In this case we also don't care if some other debug | |
4176 | format is making psymtabs, because they are all about to be | |
4177 | expanded anyway. */ | |
4178 | if ((objfile->flags & OBJF_READNOW)) | |
4179 | { | |
4180 | int i; | |
4181 | ||
4182 | dwarf2_per_objfile->using_index = 1; | |
4183 | create_all_comp_units (objfile); | |
0e50663e | 4184 | create_all_type_units (objfile); |
7b9f3c50 DE |
4185 | dwarf2_per_objfile->quick_file_names_table = |
4186 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 4187 | |
1fd400ff | 4188 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 4189 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4190 | { |
8832e7e3 | 4191 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 4192 | |
e254ef6a DE |
4193 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
4194 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
4195 | } |
4196 | ||
4197 | /* Return 1 so that gdb sees the "quick" functions. However, | |
4198 | these functions will be no-ops because we will have expanded | |
4199 | all symtabs. */ | |
4200 | return 1; | |
4201 | } | |
4202 | ||
4203 | if (dwarf2_read_index (objfile)) | |
4204 | return 1; | |
4205 | ||
9291a0cd TT |
4206 | return 0; |
4207 | } | |
4208 | ||
4209 | \f | |
4210 | ||
dce234bc PP |
4211 | /* Build a partial symbol table. */ |
4212 | ||
4213 | void | |
f29dff0a | 4214 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 4215 | { |
c9bf0622 TT |
4216 | volatile struct gdb_exception except; |
4217 | ||
f29dff0a | 4218 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
4219 | { |
4220 | init_psymbol_list (objfile, 1024); | |
4221 | } | |
4222 | ||
c9bf0622 TT |
4223 | TRY_CATCH (except, RETURN_MASK_ERROR) |
4224 | { | |
4225 | /* This isn't really ideal: all the data we allocate on the | |
4226 | objfile's obstack is still uselessly kept around. However, | |
4227 | freeing it seems unsafe. */ | |
4228 | struct cleanup *cleanups = make_cleanup_discard_psymtabs (objfile); | |
4229 | ||
4230 | dwarf2_build_psymtabs_hard (objfile); | |
4231 | discard_cleanups (cleanups); | |
4232 | } | |
4233 | if (except.reason < 0) | |
4234 | exception_print (gdb_stderr, except); | |
c906108c | 4235 | } |
c906108c | 4236 | |
1ce1cefd DE |
4237 | /* Return the total length of the CU described by HEADER. */ |
4238 | ||
4239 | static unsigned int | |
4240 | get_cu_length (const struct comp_unit_head *header) | |
4241 | { | |
4242 | return header->initial_length_size + header->length; | |
4243 | } | |
4244 | ||
45452591 DE |
4245 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
4246 | ||
4247 | static inline int | |
b64f50a1 | 4248 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 4249 | { |
b64f50a1 | 4250 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 4251 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 4252 | |
b64f50a1 | 4253 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
4254 | } |
4255 | ||
3b80fe9b DE |
4256 | /* Find the base address of the compilation unit for range lists and |
4257 | location lists. It will normally be specified by DW_AT_low_pc. | |
4258 | In DWARF-3 draft 4, the base address could be overridden by | |
4259 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
4260 | compilation units with discontinuous ranges. */ | |
4261 | ||
4262 | static void | |
4263 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
4264 | { | |
4265 | struct attribute *attr; | |
4266 | ||
4267 | cu->base_known = 0; | |
4268 | cu->base_address = 0; | |
4269 | ||
4270 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
4271 | if (attr) | |
4272 | { | |
31aa7e4e | 4273 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4274 | cu->base_known = 1; |
4275 | } | |
4276 | else | |
4277 | { | |
4278 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4279 | if (attr) | |
4280 | { | |
31aa7e4e | 4281 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4282 | cu->base_known = 1; |
4283 | } | |
4284 | } | |
4285 | } | |
4286 | ||
93311388 DE |
4287 | /* Read in the comp unit header information from the debug_info at info_ptr. |
4288 | NOTE: This leaves members offset, first_die_offset to be filled in | |
4289 | by the caller. */ | |
107d2387 | 4290 | |
d521ce57 | 4291 | static const gdb_byte * |
107d2387 | 4292 | read_comp_unit_head (struct comp_unit_head *cu_header, |
d521ce57 | 4293 | const gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
4294 | { |
4295 | int signed_addr; | |
891d2f0b | 4296 | unsigned int bytes_read; |
c764a876 DE |
4297 | |
4298 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
4299 | cu_header->initial_length_size = bytes_read; | |
4300 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 4301 | info_ptr += bytes_read; |
107d2387 AC |
4302 | cu_header->version = read_2_bytes (abfd, info_ptr); |
4303 | info_ptr += 2; | |
b64f50a1 JK |
4304 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
4305 | &bytes_read); | |
613e1657 | 4306 | info_ptr += bytes_read; |
107d2387 AC |
4307 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
4308 | info_ptr += 1; | |
4309 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
4310 | if (signed_addr < 0) | |
8e65ff28 | 4311 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4312 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 4313 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 4314 | |
107d2387 AC |
4315 | return info_ptr; |
4316 | } | |
4317 | ||
36586728 TT |
4318 | /* Helper function that returns the proper abbrev section for |
4319 | THIS_CU. */ | |
4320 | ||
4321 | static struct dwarf2_section_info * | |
4322 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
4323 | { | |
4324 | struct dwarf2_section_info *abbrev; | |
4325 | ||
4326 | if (this_cu->is_dwz) | |
4327 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
4328 | else | |
4329 | abbrev = &dwarf2_per_objfile->abbrev; | |
4330 | ||
4331 | return abbrev; | |
4332 | } | |
4333 | ||
9ff913ba DE |
4334 | /* Subroutine of read_and_check_comp_unit_head and |
4335 | read_and_check_type_unit_head to simplify them. | |
4336 | Perform various error checking on the header. */ | |
4337 | ||
4338 | static void | |
4339 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
4340 | struct dwarf2_section_info *section, |
4341 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 4342 | { |
a32a8923 DE |
4343 | bfd *abfd = get_section_bfd_owner (section); |
4344 | const char *filename = get_section_file_name (section); | |
9ff913ba DE |
4345 | |
4346 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
4347 | error (_("Dwarf Error: wrong version in compilation unit header " | |
4348 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
4349 | filename); | |
4350 | ||
b64f50a1 | 4351 | if (header->abbrev_offset.sect_off |
36586728 | 4352 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
4353 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
4354 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 4355 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
4356 | filename); |
4357 | ||
4358 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
4359 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4360 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4361 | > section->size) |
4362 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4363 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4364 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4365 | filename); |
4366 | } | |
4367 | ||
4368 | /* Read in a CU/TU header and perform some basic error checking. | |
4369 | The contents of the header are stored in HEADER. | |
4370 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4371 | |
d521ce57 | 4372 | static const gdb_byte * |
9ff913ba DE |
4373 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4374 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4375 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4376 | const gdb_byte *info_ptr, |
9ff913ba | 4377 | int is_debug_types_section) |
72bf9492 | 4378 | { |
d521ce57 | 4379 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4380 | bfd *abfd = get_section_bfd_owner (section); |
72bf9492 | 4381 | |
b64f50a1 | 4382 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4383 | |
72bf9492 DJ |
4384 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
4385 | ||
460c1c54 CC |
4386 | /* If we're reading a type unit, skip over the signature and |
4387 | type_offset fields. */ | |
b0df02fd | 4388 | if (is_debug_types_section) |
460c1c54 CC |
4389 | info_ptr += 8 /*signature*/ + header->offset_size; |
4390 | ||
b64f50a1 | 4391 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 4392 | |
4bdcc0c1 | 4393 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
4394 | |
4395 | return info_ptr; | |
4396 | } | |
4397 | ||
348e048f DE |
4398 | /* Read in the types comp unit header information from .debug_types entry at |
4399 | types_ptr. The result is a pointer to one past the end of the header. */ | |
4400 | ||
d521ce57 | 4401 | static const gdb_byte * |
9ff913ba DE |
4402 | read_and_check_type_unit_head (struct comp_unit_head *header, |
4403 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4404 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4405 | const gdb_byte *info_ptr, |
dee91e82 DE |
4406 | ULONGEST *signature, |
4407 | cu_offset *type_offset_in_tu) | |
348e048f | 4408 | { |
d521ce57 | 4409 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4410 | bfd *abfd = get_section_bfd_owner (section); |
348e048f | 4411 | |
b64f50a1 | 4412 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 4413 | |
9ff913ba | 4414 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 4415 | |
9ff913ba DE |
4416 | /* If we're reading a type unit, skip over the signature and |
4417 | type_offset fields. */ | |
4418 | if (signature != NULL) | |
4419 | *signature = read_8_bytes (abfd, info_ptr); | |
4420 | info_ptr += 8; | |
dee91e82 DE |
4421 | if (type_offset_in_tu != NULL) |
4422 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
4423 | header->offset_size); | |
9ff913ba DE |
4424 | info_ptr += header->offset_size; |
4425 | ||
b64f50a1 | 4426 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4427 | |
4bdcc0c1 | 4428 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4429 | |
4430 | return info_ptr; | |
348e048f DE |
4431 | } |
4432 | ||
f4dc4d17 DE |
4433 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4434 | ||
4435 | static sect_offset | |
4436 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4437 | sect_offset offset) | |
4438 | { | |
a32a8923 | 4439 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 4440 | const gdb_byte *info_ptr; |
f4dc4d17 DE |
4441 | unsigned int length, initial_length_size, offset_size; |
4442 | sect_offset abbrev_offset; | |
4443 | ||
4444 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4445 | info_ptr = section->buffer + offset.sect_off; | |
4446 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
4447 | offset_size = initial_length_size == 4 ? 4 : 8; | |
4448 | info_ptr += initial_length_size + 2 /*version*/; | |
4449 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
4450 | return abbrev_offset; | |
4451 | } | |
4452 | ||
aaa75496 JB |
4453 | /* Allocate a new partial symtab for file named NAME and mark this new |
4454 | partial symtab as being an include of PST. */ | |
4455 | ||
4456 | static void | |
d521ce57 | 4457 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
4458 | struct objfile *objfile) |
4459 | { | |
4460 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4461 | ||
fbd9ab74 JK |
4462 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4463 | { | |
4464 | /* It shares objfile->objfile_obstack. */ | |
4465 | subpst->dirname = pst->dirname; | |
4466 | } | |
4467 | ||
aaa75496 JB |
4468 | subpst->section_offsets = pst->section_offsets; |
4469 | subpst->textlow = 0; | |
4470 | subpst->texthigh = 0; | |
4471 | ||
4472 | subpst->dependencies = (struct partial_symtab **) | |
4473 | obstack_alloc (&objfile->objfile_obstack, | |
4474 | sizeof (struct partial_symtab *)); | |
4475 | subpst->dependencies[0] = pst; | |
4476 | subpst->number_of_dependencies = 1; | |
4477 | ||
4478 | subpst->globals_offset = 0; | |
4479 | subpst->n_global_syms = 0; | |
4480 | subpst->statics_offset = 0; | |
4481 | subpst->n_static_syms = 0; | |
43f3e411 | 4482 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
4483 | subpst->read_symtab = pst->read_symtab; |
4484 | subpst->readin = 0; | |
4485 | ||
4486 | /* No private part is necessary for include psymtabs. This property | |
4487 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4488 | the regular ones. */ |
58a9656e | 4489 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4490 | } |
4491 | ||
4492 | /* Read the Line Number Program data and extract the list of files | |
4493 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4494 | partial symtab for each of these included files. */ |
aaa75496 JB |
4495 | |
4496 | static void | |
4497 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4498 | struct die_info *die, |
4499 | struct partial_symtab *pst) | |
aaa75496 | 4500 | { |
d85a05f0 DJ |
4501 | struct line_header *lh = NULL; |
4502 | struct attribute *attr; | |
aaa75496 | 4503 | |
d85a05f0 DJ |
4504 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4505 | if (attr) | |
3019eac3 | 4506 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4507 | if (lh == NULL) |
4508 | return; /* No linetable, so no includes. */ | |
4509 | ||
c6da4cef | 4510 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
527f3840 | 4511 | dwarf_decode_lines (lh, pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
4512 | |
4513 | free_line_header (lh); | |
4514 | } | |
4515 | ||
348e048f | 4516 | static hashval_t |
52dc124a | 4517 | hash_signatured_type (const void *item) |
348e048f | 4518 | { |
52dc124a | 4519 | const struct signatured_type *sig_type = item; |
9a619af0 | 4520 | |
348e048f | 4521 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4522 | return sig_type->signature; |
348e048f DE |
4523 | } |
4524 | ||
4525 | static int | |
52dc124a | 4526 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
4527 | { |
4528 | const struct signatured_type *lhs = item_lhs; | |
4529 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4530 | |
348e048f DE |
4531 | return lhs->signature == rhs->signature; |
4532 | } | |
4533 | ||
1fd400ff TT |
4534 | /* Allocate a hash table for signatured types. */ |
4535 | ||
4536 | static htab_t | |
673bfd45 | 4537 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4538 | { |
4539 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4540 | hash_signatured_type, |
4541 | eq_signatured_type, | |
1fd400ff TT |
4542 | NULL, |
4543 | &objfile->objfile_obstack, | |
4544 | hashtab_obstack_allocate, | |
4545 | dummy_obstack_deallocate); | |
4546 | } | |
4547 | ||
d467dd73 | 4548 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4549 | |
4550 | static int | |
d467dd73 | 4551 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4552 | { |
4553 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4554 | struct signatured_type ***datap = datum; |
1fd400ff | 4555 | |
b4dd5633 | 4556 | **datap = sigt; |
1fd400ff TT |
4557 | ++*datap; |
4558 | ||
4559 | return 1; | |
4560 | } | |
4561 | ||
c88ee1f0 DE |
4562 | /* Create the hash table of all entries in the .debug_types |
4563 | (or .debug_types.dwo) section(s). | |
4564 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4565 | otherwise it is NULL. | |
4566 | ||
4567 | The result is a pointer to the hash table or NULL if there are no types. | |
4568 | ||
4569 | Note: This function processes DWO files only, not DWP files. */ | |
348e048f | 4570 | |
3019eac3 DE |
4571 | static htab_t |
4572 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4573 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4574 | { |
3019eac3 | 4575 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4576 | htab_t types_htab = NULL; |
8b70b953 TT |
4577 | int ix; |
4578 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4579 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4580 | |
3019eac3 DE |
4581 | if (VEC_empty (dwarf2_section_info_def, types)) |
4582 | return NULL; | |
348e048f | 4583 | |
4bdcc0c1 DE |
4584 | abbrev_section = (dwo_file != NULL |
4585 | ? &dwo_file->sections.abbrev | |
4586 | : &dwarf2_per_objfile->abbrev); | |
4587 | ||
09406207 DE |
4588 | if (dwarf2_read_debug) |
4589 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
4590 | dwo_file ? ".dwo" : "", | |
a32a8923 | 4591 | get_section_file_name (abbrev_section)); |
09406207 | 4592 | |
8b70b953 | 4593 | for (ix = 0; |
3019eac3 | 4594 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4595 | ++ix) |
4596 | { | |
3019eac3 | 4597 | bfd *abfd; |
d521ce57 | 4598 | const gdb_byte *info_ptr, *end_ptr; |
348e048f | 4599 | |
8b70b953 TT |
4600 | dwarf2_read_section (objfile, section); |
4601 | info_ptr = section->buffer; | |
348e048f | 4602 | |
8b70b953 TT |
4603 | if (info_ptr == NULL) |
4604 | continue; | |
348e048f | 4605 | |
3019eac3 | 4606 | /* We can't set abfd until now because the section may be empty or |
a32a8923 DE |
4607 | not present, in which case the bfd is unknown. */ |
4608 | abfd = get_section_bfd_owner (section); | |
3019eac3 | 4609 | |
dee91e82 DE |
4610 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4611 | because we don't need to read any dies: the signature is in the | |
4612 | header. */ | |
8b70b953 TT |
4613 | |
4614 | end_ptr = info_ptr + section->size; | |
4615 | while (info_ptr < end_ptr) | |
4616 | { | |
b64f50a1 | 4617 | sect_offset offset; |
3019eac3 | 4618 | cu_offset type_offset_in_tu; |
8b70b953 | 4619 | ULONGEST signature; |
52dc124a | 4620 | struct signatured_type *sig_type; |
3019eac3 | 4621 | struct dwo_unit *dwo_tu; |
8b70b953 | 4622 | void **slot; |
d521ce57 | 4623 | const gdb_byte *ptr = info_ptr; |
9ff913ba | 4624 | struct comp_unit_head header; |
dee91e82 | 4625 | unsigned int length; |
348e048f | 4626 | |
b64f50a1 | 4627 | offset.sect_off = ptr - section->buffer; |
348e048f | 4628 | |
8b70b953 | 4629 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4630 | table, but we don't need anything else just yet. */ |
348e048f | 4631 | |
4bdcc0c1 DE |
4632 | ptr = read_and_check_type_unit_head (&header, section, |
4633 | abbrev_section, ptr, | |
3019eac3 | 4634 | &signature, &type_offset_in_tu); |
6caca83c | 4635 | |
1ce1cefd | 4636 | length = get_cu_length (&header); |
dee91e82 | 4637 | |
6caca83c | 4638 | /* Skip dummy type units. */ |
dee91e82 DE |
4639 | if (ptr >= info_ptr + length |
4640 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4641 | { |
1ce1cefd | 4642 | info_ptr += length; |
6caca83c CC |
4643 | continue; |
4644 | } | |
8b70b953 | 4645 | |
0349ea22 DE |
4646 | if (types_htab == NULL) |
4647 | { | |
4648 | if (dwo_file) | |
4649 | types_htab = allocate_dwo_unit_table (objfile); | |
4650 | else | |
4651 | types_htab = allocate_signatured_type_table (objfile); | |
4652 | } | |
4653 | ||
3019eac3 DE |
4654 | if (dwo_file) |
4655 | { | |
4656 | sig_type = NULL; | |
4657 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4658 | struct dwo_unit); | |
4659 | dwo_tu->dwo_file = dwo_file; | |
4660 | dwo_tu->signature = signature; | |
4661 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
8a0459fd | 4662 | dwo_tu->section = section; |
3019eac3 DE |
4663 | dwo_tu->offset = offset; |
4664 | dwo_tu->length = length; | |
4665 | } | |
4666 | else | |
4667 | { | |
4668 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4669 | The real type_offset is in the DWO file. */ | |
4670 | dwo_tu = NULL; | |
4671 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4672 | struct signatured_type); | |
4673 | sig_type->signature = signature; | |
4674 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4675 | sig_type->per_cu.objfile = objfile; | |
4676 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 4677 | sig_type->per_cu.section = section; |
3019eac3 DE |
4678 | sig_type->per_cu.offset = offset; |
4679 | sig_type->per_cu.length = length; | |
4680 | } | |
8b70b953 | 4681 | |
3019eac3 DE |
4682 | slot = htab_find_slot (types_htab, |
4683 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4684 | INSERT); | |
8b70b953 TT |
4685 | gdb_assert (slot != NULL); |
4686 | if (*slot != NULL) | |
4687 | { | |
3019eac3 DE |
4688 | sect_offset dup_offset; |
4689 | ||
4690 | if (dwo_file) | |
4691 | { | |
4692 | const struct dwo_unit *dup_tu = *slot; | |
4693 | ||
4694 | dup_offset = dup_tu->offset; | |
4695 | } | |
4696 | else | |
4697 | { | |
4698 | const struct signatured_type *dup_tu = *slot; | |
4699 | ||
4700 | dup_offset = dup_tu->per_cu.offset; | |
4701 | } | |
b3c8eb43 | 4702 | |
8b70b953 | 4703 | complaint (&symfile_complaints, |
c88ee1f0 | 4704 | _("debug type entry at offset 0x%x is duplicate to" |
4031ecc5 | 4705 | " the entry at offset 0x%x, signature %s"), |
3019eac3 | 4706 | offset.sect_off, dup_offset.sect_off, |
4031ecc5 | 4707 | hex_string (signature)); |
8b70b953 | 4708 | } |
3019eac3 | 4709 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4710 | |
73be47f5 | 4711 | if (dwarf2_read_debug > 1) |
4031ecc5 | 4712 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", |
b64f50a1 | 4713 | offset.sect_off, |
4031ecc5 | 4714 | hex_string (signature)); |
348e048f | 4715 | |
dee91e82 | 4716 | info_ptr += length; |
8b70b953 | 4717 | } |
348e048f DE |
4718 | } |
4719 | ||
3019eac3 DE |
4720 | return types_htab; |
4721 | } | |
4722 | ||
4723 | /* Create the hash table of all entries in the .debug_types section, | |
4724 | and initialize all_type_units. | |
4725 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4726 | otherwise non-zero. */ | |
4727 | ||
4728 | static int | |
4729 | create_all_type_units (struct objfile *objfile) | |
4730 | { | |
4731 | htab_t types_htab; | |
b4dd5633 | 4732 | struct signatured_type **iter; |
3019eac3 DE |
4733 | |
4734 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4735 | if (types_htab == NULL) | |
4736 | { | |
4737 | dwarf2_per_objfile->signatured_types = NULL; | |
4738 | return 0; | |
4739 | } | |
4740 | ||
348e048f DE |
4741 | dwarf2_per_objfile->signatured_types = types_htab; |
4742 | ||
6aa5f3a6 DE |
4743 | dwarf2_per_objfile->n_type_units |
4744 | = dwarf2_per_objfile->n_allocated_type_units | |
4745 | = htab_elements (types_htab); | |
d467dd73 | 4746 | dwarf2_per_objfile->all_type_units |
a2ce51a0 DE |
4747 | = xmalloc (dwarf2_per_objfile->n_type_units |
4748 | * sizeof (struct signatured_type *)); | |
d467dd73 DE |
4749 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4750 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4751 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4752 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4753 | |
348e048f DE |
4754 | return 1; |
4755 | } | |
4756 | ||
6aa5f3a6 DE |
4757 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
4758 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
4759 | Otherwise we find one. */ | |
4760 | ||
4761 | static struct signatured_type * | |
4762 | add_type_unit (ULONGEST sig, void **slot) | |
4763 | { | |
4764 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4765 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
4766 | struct signatured_type *sig_type; | |
4767 | ||
4768 | gdb_assert (n_type_units <= dwarf2_per_objfile->n_allocated_type_units); | |
4769 | ++n_type_units; | |
4770 | if (n_type_units > dwarf2_per_objfile->n_allocated_type_units) | |
4771 | { | |
4772 | if (dwarf2_per_objfile->n_allocated_type_units == 0) | |
4773 | dwarf2_per_objfile->n_allocated_type_units = 1; | |
4774 | dwarf2_per_objfile->n_allocated_type_units *= 2; | |
4775 | dwarf2_per_objfile->all_type_units | |
4776 | = xrealloc (dwarf2_per_objfile->all_type_units, | |
4777 | dwarf2_per_objfile->n_allocated_type_units | |
4778 | * sizeof (struct signatured_type *)); | |
4779 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
4780 | } | |
4781 | dwarf2_per_objfile->n_type_units = n_type_units; | |
4782 | ||
4783 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4784 | struct signatured_type); | |
4785 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
4786 | sig_type->signature = sig; | |
4787 | sig_type->per_cu.is_debug_types = 1; | |
4788 | if (dwarf2_per_objfile->using_index) | |
4789 | { | |
4790 | sig_type->per_cu.v.quick = | |
4791 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4792 | struct dwarf2_per_cu_quick_data); | |
4793 | } | |
4794 | ||
4795 | if (slot == NULL) | |
4796 | { | |
4797 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4798 | sig_type, INSERT); | |
4799 | } | |
4800 | gdb_assert (*slot == NULL); | |
4801 | *slot = sig_type; | |
4802 | /* The rest of sig_type must be filled in by the caller. */ | |
4803 | return sig_type; | |
4804 | } | |
4805 | ||
a2ce51a0 DE |
4806 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
4807 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
4808 | ||
4809 | static void | |
4810 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
4811 | struct signatured_type *sig_entry, | |
4812 | struct dwo_unit *dwo_entry) | |
4813 | { | |
7ee85ab1 | 4814 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
4815 | gdb_assert (! sig_entry->per_cu.queued); |
4816 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
4817 | if (dwarf2_per_objfile->using_index) |
4818 | { | |
4819 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 4820 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
4821 | } |
4822 | else | |
4823 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 DE |
4824 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
4825 | gdb_assert (sig_entry->type_offset_in_section.sect_off == 0); | |
4826 | gdb_assert (sig_entry->type_unit_group == NULL); | |
7ee85ab1 DE |
4827 | gdb_assert (sig_entry->dwo_unit == NULL); |
4828 | ||
4829 | sig_entry->per_cu.section = dwo_entry->section; | |
4830 | sig_entry->per_cu.offset = dwo_entry->offset; | |
4831 | sig_entry->per_cu.length = dwo_entry->length; | |
4832 | sig_entry->per_cu.reading_dwo_directly = 1; | |
4833 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
4834 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
4835 | sig_entry->dwo_unit = dwo_entry; | |
4836 | } | |
4837 | ||
4838 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
4839 | If we haven't read the TU yet, create the signatured_type data structure |
4840 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
4841 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
4842 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
4843 | containing that CU. Otherwise we could end up reading several other DWO | |
4844 | files (due to comdat folding) to process the transitive closure of all the | |
4845 | mentioned TUs, and that can be slow. The current DWO file will have every | |
4846 | type signature that it needs. | |
a2ce51a0 DE |
4847 | We only do this for .gdb_index because in the psymtab case we already have |
4848 | to read all the DWOs to build the type unit groups. */ | |
4849 | ||
4850 | static struct signatured_type * | |
4851 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4852 | { | |
4853 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4854 | struct dwo_file *dwo_file; | |
4855 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
4856 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 4857 | void **slot; |
a2ce51a0 DE |
4858 | |
4859 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4860 | ||
6aa5f3a6 DE |
4861 | /* If TU skeletons have been removed then we may not have read in any |
4862 | TUs yet. */ | |
4863 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4864 | { | |
4865 | dwarf2_per_objfile->signatured_types | |
4866 | = allocate_signatured_type_table (objfile); | |
4867 | } | |
a2ce51a0 DE |
4868 | |
4869 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
4870 | Use the global signatured_types array to do our own comdat-folding |
4871 | of types. If this is the first time we're reading this TU, and | |
4872 | the TU has an entry in .gdb_index, replace the recorded data from | |
4873 | .gdb_index with this TU. */ | |
a2ce51a0 | 4874 | |
a2ce51a0 | 4875 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
4876 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
4877 | &find_sig_entry, INSERT); | |
4878 | sig_entry = *slot; | |
7ee85ab1 DE |
4879 | |
4880 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
4881 | read. Don't reassign the global entry to point to this DWO if that's |
4882 | the case. Also note that if the TU is already being read, it may not | |
4883 | have come from a DWO, the program may be a mix of Fission-compiled | |
4884 | code and non-Fission-compiled code. */ | |
4885 | ||
4886 | /* Have we already tried to read this TU? | |
4887 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
4888 | needn't exist in the global table yet). */ | |
4889 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
4890 | return sig_entry; |
4891 | ||
6aa5f3a6 DE |
4892 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
4893 | dwo_unit of the TU itself. */ | |
4894 | dwo_file = cu->dwo_unit->dwo_file; | |
4895 | ||
a2ce51a0 DE |
4896 | /* Ok, this is the first time we're reading this TU. */ |
4897 | if (dwo_file->tus == NULL) | |
4898 | return NULL; | |
4899 | find_dwo_entry.signature = sig; | |
4900 | dwo_entry = htab_find (dwo_file->tus, &find_dwo_entry); | |
4901 | if (dwo_entry == NULL) | |
4902 | return NULL; | |
4903 | ||
6aa5f3a6 DE |
4904 | /* If the global table doesn't have an entry for this TU, add one. */ |
4905 | if (sig_entry == NULL) | |
4906 | sig_entry = add_type_unit (sig, slot); | |
4907 | ||
a2ce51a0 | 4908 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
89e63ee4 | 4909 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
4910 | return sig_entry; |
4911 | } | |
4912 | ||
a2ce51a0 DE |
4913 | /* Subroutine of lookup_signatured_type. |
4914 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
4915 | then try the DWP file. If the TU stub (skeleton) has been removed then |
4916 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
4917 | |
4918 | static struct signatured_type * | |
4919 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4920 | { | |
4921 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4922 | struct dwp_file *dwp_file = get_dwp_file (); | |
4923 | struct dwo_unit *dwo_entry; | |
4924 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 4925 | void **slot; |
a2ce51a0 DE |
4926 | |
4927 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4928 | gdb_assert (dwp_file != NULL); | |
4929 | ||
6aa5f3a6 DE |
4930 | /* If TU skeletons have been removed then we may not have read in any |
4931 | TUs yet. */ | |
4932 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 4933 | { |
6aa5f3a6 DE |
4934 | dwarf2_per_objfile->signatured_types |
4935 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
4936 | } |
4937 | ||
6aa5f3a6 DE |
4938 | find_sig_entry.signature = sig; |
4939 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4940 | &find_sig_entry, INSERT); | |
4941 | sig_entry = *slot; | |
4942 | ||
4943 | /* Have we already tried to read this TU? | |
4944 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
4945 | needn't exist in the global table yet). */ | |
4946 | if (sig_entry != NULL) | |
4947 | return sig_entry; | |
4948 | ||
a2ce51a0 DE |
4949 | if (dwp_file->tus == NULL) |
4950 | return NULL; | |
57d63ce2 DE |
4951 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
4952 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
4953 | if (dwo_entry == NULL) |
4954 | return NULL; | |
4955 | ||
6aa5f3a6 | 4956 | sig_entry = add_type_unit (sig, slot); |
a2ce51a0 DE |
4957 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
4958 | ||
a2ce51a0 DE |
4959 | return sig_entry; |
4960 | } | |
4961 | ||
380bca97 | 4962 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
4963 | Returns NULL if signature SIG is not present in the table. |
4964 | It is up to the caller to complain about this. */ | |
348e048f DE |
4965 | |
4966 | static struct signatured_type * | |
a2ce51a0 | 4967 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 4968 | { |
a2ce51a0 DE |
4969 | if (cu->dwo_unit |
4970 | && dwarf2_per_objfile->using_index) | |
4971 | { | |
4972 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
4973 | These cases require special processing. */ | |
4974 | if (get_dwp_file () == NULL) | |
4975 | return lookup_dwo_signatured_type (cu, sig); | |
4976 | else | |
4977 | return lookup_dwp_signatured_type (cu, sig); | |
4978 | } | |
4979 | else | |
4980 | { | |
4981 | struct signatured_type find_entry, *entry; | |
348e048f | 4982 | |
a2ce51a0 DE |
4983 | if (dwarf2_per_objfile->signatured_types == NULL) |
4984 | return NULL; | |
4985 | find_entry.signature = sig; | |
4986 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
4987 | return entry; | |
4988 | } | |
348e048f | 4989 | } |
42e7ad6c DE |
4990 | \f |
4991 | /* Low level DIE reading support. */ | |
348e048f | 4992 | |
d85a05f0 DJ |
4993 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
4994 | ||
4995 | static void | |
4996 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 4997 | struct dwarf2_cu *cu, |
3019eac3 DE |
4998 | struct dwarf2_section_info *section, |
4999 | struct dwo_file *dwo_file) | |
d85a05f0 | 5000 | { |
fceca515 | 5001 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 5002 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 5003 | reader->cu = cu; |
3019eac3 | 5004 | reader->dwo_file = dwo_file; |
dee91e82 DE |
5005 | reader->die_section = section; |
5006 | reader->buffer = section->buffer; | |
f664829e | 5007 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 5008 | reader->comp_dir = NULL; |
d85a05f0 DJ |
5009 | } |
5010 | ||
b0c7bfa9 DE |
5011 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
5012 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
5013 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
5014 | already. | |
5015 | ||
5016 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
5017 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
5018 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
5019 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
5020 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
5021 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
5022 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
5023 | are filled in with the info of the DIE from the DWO file. | |
5024 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
5025 | provided an abbrev table to use. | |
5026 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
5027 | ||
5028 | static int | |
5029 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
5030 | struct dwo_unit *dwo_unit, | |
5031 | int abbrev_table_provided, | |
5032 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 5033 | const char *stub_comp_dir, |
b0c7bfa9 | 5034 | struct die_reader_specs *result_reader, |
d521ce57 | 5035 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
5036 | struct die_info **result_comp_unit_die, |
5037 | int *result_has_children) | |
5038 | { | |
5039 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5040 | struct dwarf2_cu *cu = this_cu->cu; | |
5041 | struct dwarf2_section_info *section; | |
5042 | bfd *abfd; | |
d521ce57 | 5043 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
5044 | ULONGEST signature; /* Or dwo_id. */ |
5045 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
5046 | int i,num_extra_attrs; | |
5047 | struct dwarf2_section_info *dwo_abbrev_section; | |
5048 | struct attribute *attr; | |
5049 | struct die_info *comp_unit_die; | |
5050 | ||
b0aeadb3 DE |
5051 | /* At most one of these may be provided. */ |
5052 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 5053 | |
b0c7bfa9 DE |
5054 | /* These attributes aren't processed until later: |
5055 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
5056 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
5057 | referenced later. However, these attributes are found in the stub | |
5058 | which we won't have later. In order to not impose this complication | |
5059 | on the rest of the code, we read them here and copy them to the | |
5060 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
5061 | |
5062 | stmt_list = NULL; | |
5063 | low_pc = NULL; | |
5064 | high_pc = NULL; | |
5065 | ranges = NULL; | |
5066 | comp_dir = NULL; | |
5067 | ||
5068 | if (stub_comp_unit_die != NULL) | |
5069 | { | |
5070 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
5071 | DWO file. */ | |
5072 | if (! this_cu->is_debug_types) | |
5073 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
5074 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
5075 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
5076 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
5077 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
5078 | ||
5079 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
5080 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
5081 | cu->addr_base = 0; | |
5082 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
5083 | if (attr) | |
5084 | cu->addr_base = DW_UNSND (attr); | |
5085 | ||
5086 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
5087 | We need the value before we can process DW_AT_ranges. */ | |
5088 | cu->ranges_base = 0; | |
5089 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
5090 | if (attr) | |
5091 | cu->ranges_base = DW_UNSND (attr); | |
5092 | } | |
a2ce51a0 DE |
5093 | else if (stub_comp_dir != NULL) |
5094 | { | |
5095 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
5096 | comp_dir = (struct attribute *) | |
5097 | obstack_alloc (&cu->comp_unit_obstack, sizeof (*comp_dir)); | |
5098 | comp_dir->name = DW_AT_comp_dir; | |
5099 | comp_dir->form = DW_FORM_string; | |
5100 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
5101 | DW_STRING (comp_dir) = stub_comp_dir; | |
5102 | } | |
b0c7bfa9 DE |
5103 | |
5104 | /* Set up for reading the DWO CU/TU. */ | |
5105 | cu->dwo_unit = dwo_unit; | |
5106 | section = dwo_unit->section; | |
5107 | dwarf2_read_section (objfile, section); | |
a32a8923 | 5108 | abfd = get_section_bfd_owner (section); |
b0c7bfa9 DE |
5109 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
5110 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; | |
5111 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
5112 | ||
5113 | if (this_cu->is_debug_types) | |
5114 | { | |
5115 | ULONGEST header_signature; | |
5116 | cu_offset type_offset_in_tu; | |
5117 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; | |
5118 | ||
5119 | info_ptr = read_and_check_type_unit_head (&cu->header, section, | |
5120 | dwo_abbrev_section, | |
5121 | info_ptr, | |
5122 | &header_signature, | |
5123 | &type_offset_in_tu); | |
a2ce51a0 DE |
5124 | /* This is not an assert because it can be caused by bad debug info. */ |
5125 | if (sig_type->signature != header_signature) | |
5126 | { | |
5127 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
5128 | " TU at offset 0x%x [in module %s]"), | |
5129 | hex_string (sig_type->signature), | |
5130 | hex_string (header_signature), | |
5131 | dwo_unit->offset.sect_off, | |
5132 | bfd_get_filename (abfd)); | |
5133 | } | |
b0c7bfa9 DE |
5134 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
5135 | /* For DWOs coming from DWP files, we don't know the CU length | |
5136 | nor the type's offset in the TU until now. */ | |
5137 | dwo_unit->length = get_cu_length (&cu->header); | |
5138 | dwo_unit->type_offset_in_tu = type_offset_in_tu; | |
5139 | ||
5140 | /* Establish the type offset that can be used to lookup the type. | |
5141 | For DWO files, we don't know it until now. */ | |
5142 | sig_type->type_offset_in_section.sect_off = | |
5143 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
5144 | } | |
5145 | else | |
5146 | { | |
5147 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
5148 | dwo_abbrev_section, | |
5149 | info_ptr, 0); | |
5150 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
5151 | /* For DWOs coming from DWP files, we don't know the CU length | |
5152 | until now. */ | |
5153 | dwo_unit->length = get_cu_length (&cu->header); | |
5154 | } | |
5155 | ||
02142a6c DE |
5156 | /* Replace the CU's original abbrev table with the DWO's. |
5157 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
5158 | if (abbrev_table_provided) |
5159 | { | |
5160 | /* Don't free the provided abbrev table, the caller of | |
5161 | init_cutu_and_read_dies owns it. */ | |
5162 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5163 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
5164 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5165 | } | |
5166 | else | |
5167 | { | |
5168 | dwarf2_free_abbrev_table (cu); | |
5169 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5170 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
5171 | } |
5172 | ||
5173 | /* Read in the die, but leave space to copy over the attributes | |
5174 | from the stub. This has the benefit of simplifying the rest of | |
5175 | the code - all the work to maintain the illusion of a single | |
5176 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
5177 | num_extra_attrs = ((stmt_list != NULL) | |
5178 | + (low_pc != NULL) | |
5179 | + (high_pc != NULL) | |
5180 | + (ranges != NULL) | |
5181 | + (comp_dir != NULL)); | |
5182 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
5183 | result_has_children, num_extra_attrs); | |
5184 | ||
5185 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
5186 | comp_unit_die = *result_comp_unit_die; | |
5187 | i = comp_unit_die->num_attrs; | |
5188 | if (stmt_list != NULL) | |
5189 | comp_unit_die->attrs[i++] = *stmt_list; | |
5190 | if (low_pc != NULL) | |
5191 | comp_unit_die->attrs[i++] = *low_pc; | |
5192 | if (high_pc != NULL) | |
5193 | comp_unit_die->attrs[i++] = *high_pc; | |
5194 | if (ranges != NULL) | |
5195 | comp_unit_die->attrs[i++] = *ranges; | |
5196 | if (comp_dir != NULL) | |
5197 | comp_unit_die->attrs[i++] = *comp_dir; | |
5198 | comp_unit_die->num_attrs += num_extra_attrs; | |
5199 | ||
bf6af496 DE |
5200 | if (dwarf2_die_debug) |
5201 | { | |
5202 | fprintf_unfiltered (gdb_stdlog, | |
5203 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 5204 | get_section_name (section), |
bf6af496 DE |
5205 | (unsigned) (begin_info_ptr - section->buffer), |
5206 | bfd_get_filename (abfd)); | |
5207 | dump_die (comp_unit_die, dwarf2_die_debug); | |
5208 | } | |
5209 | ||
a2ce51a0 DE |
5210 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
5211 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
5212 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
5213 | to get it via circuitous means. Blech. */ | |
5214 | if (comp_dir != NULL) | |
5215 | result_reader->comp_dir = DW_STRING (comp_dir); | |
5216 | ||
b0c7bfa9 DE |
5217 | /* Skip dummy compilation units. */ |
5218 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
5219 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
5220 | return 0; | |
5221 | ||
5222 | *result_info_ptr = info_ptr; | |
5223 | return 1; | |
5224 | } | |
5225 | ||
5226 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
5227 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 5228 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
5229 | |
5230 | static struct dwo_unit * | |
5231 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
5232 | struct die_info *comp_unit_die) | |
5233 | { | |
5234 | struct dwarf2_cu *cu = this_cu->cu; | |
5235 | struct attribute *attr; | |
5236 | ULONGEST signature; | |
5237 | struct dwo_unit *dwo_unit; | |
5238 | const char *comp_dir, *dwo_name; | |
5239 | ||
a2ce51a0 DE |
5240 | gdb_assert (cu != NULL); |
5241 | ||
b0c7bfa9 DE |
5242 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
5243 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
5244 | gdb_assert (attr != NULL); | |
5245 | dwo_name = DW_STRING (attr); | |
5246 | comp_dir = NULL; | |
5247 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5248 | if (attr) | |
5249 | comp_dir = DW_STRING (attr); | |
5250 | ||
5251 | if (this_cu->is_debug_types) | |
5252 | { | |
5253 | struct signatured_type *sig_type; | |
5254 | ||
5255 | /* Since this_cu is the first member of struct signatured_type, | |
5256 | we can go from a pointer to one to a pointer to the other. */ | |
5257 | sig_type = (struct signatured_type *) this_cu; | |
5258 | signature = sig_type->signature; | |
5259 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
5260 | } | |
5261 | else | |
5262 | { | |
5263 | struct attribute *attr; | |
5264 | ||
5265 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
5266 | if (! attr) | |
5267 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
5268 | " [in module %s]"), | |
4262abfb | 5269 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
5270 | signature = DW_UNSND (attr); |
5271 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
5272 | signature); | |
5273 | } | |
5274 | ||
b0c7bfa9 DE |
5275 | return dwo_unit; |
5276 | } | |
5277 | ||
a2ce51a0 | 5278 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 DE |
5279 | See it for a description of the parameters. |
5280 | Read a TU directly from a DWO file, bypassing the stub. | |
5281 | ||
5282 | Note: This function could be a little bit simpler if we shared cleanups | |
5283 | with our caller, init_cutu_and_read_dies. That's generally a fragile thing | |
5284 | to do, so we keep this function self-contained. Or we could move this | |
5285 | into our caller, but it's complex enough already. */ | |
a2ce51a0 DE |
5286 | |
5287 | static void | |
6aa5f3a6 DE |
5288 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
5289 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
5290 | die_reader_func_ftype *die_reader_func, |
5291 | void *data) | |
5292 | { | |
5293 | struct dwarf2_cu *cu; | |
5294 | struct signatured_type *sig_type; | |
6aa5f3a6 | 5295 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
a2ce51a0 DE |
5296 | struct die_reader_specs reader; |
5297 | const gdb_byte *info_ptr; | |
5298 | struct die_info *comp_unit_die; | |
5299 | int has_children; | |
5300 | ||
5301 | /* Verify we can do the following downcast, and that we have the | |
5302 | data we need. */ | |
5303 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
5304 | sig_type = (struct signatured_type *) this_cu; | |
5305 | gdb_assert (sig_type->dwo_unit != NULL); | |
5306 | ||
5307 | cleanups = make_cleanup (null_cleanup, NULL); | |
5308 | ||
6aa5f3a6 DE |
5309 | if (use_existing_cu && this_cu->cu != NULL) |
5310 | { | |
5311 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
5312 | cu = this_cu->cu; | |
5313 | /* There's no need to do the rereading_dwo_cu handling that | |
5314 | init_cutu_and_read_dies does since we don't read the stub. */ | |
5315 | } | |
5316 | else | |
5317 | { | |
5318 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5319 | gdb_assert (this_cu->cu == NULL); | |
5320 | cu = xmalloc (sizeof (*cu)); | |
5321 | init_one_comp_unit (cu, this_cu); | |
5322 | /* If an error occurs while loading, release our storage. */ | |
5323 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
5324 | } | |
5325 | ||
5326 | /* A future optimization, if needed, would be to use an existing | |
5327 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
5328 | could share abbrev tables. */ | |
a2ce51a0 DE |
5329 | |
5330 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
5331 | 0 /* abbrev_table_provided */, | |
5332 | NULL /* stub_comp_unit_die */, | |
5333 | sig_type->dwo_unit->dwo_file->comp_dir, | |
5334 | &reader, &info_ptr, | |
5335 | &comp_unit_die, &has_children) == 0) | |
5336 | { | |
5337 | /* Dummy die. */ | |
5338 | do_cleanups (cleanups); | |
5339 | return; | |
5340 | } | |
5341 | ||
5342 | /* All the "real" work is done here. */ | |
5343 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5344 | ||
6aa5f3a6 | 5345 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
5346 | but the alternative is making the latter more complex. |
5347 | This function is only for the special case of using DWO files directly: | |
5348 | no point in overly complicating the general case just to handle this. */ | |
6aa5f3a6 | 5349 | if (free_cu_cleanup != NULL) |
a2ce51a0 | 5350 | { |
6aa5f3a6 DE |
5351 | if (keep) |
5352 | { | |
5353 | /* We've successfully allocated this compilation unit. Let our | |
5354 | caller clean it up when finished with it. */ | |
5355 | discard_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5356 | |
6aa5f3a6 DE |
5357 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5358 | So we have to manually free the abbrev table. */ | |
5359 | dwarf2_free_abbrev_table (cu); | |
a2ce51a0 | 5360 | |
6aa5f3a6 DE |
5361 | /* Link this CU into read_in_chain. */ |
5362 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5363 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5364 | } | |
5365 | else | |
5366 | do_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5367 | } |
a2ce51a0 DE |
5368 | |
5369 | do_cleanups (cleanups); | |
5370 | } | |
5371 | ||
fd820528 | 5372 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 5373 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 5374 | |
f4dc4d17 DE |
5375 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
5376 | Otherwise the table specified in the comp unit header is read in and used. | |
5377 | This is an optimization for when we already have the abbrev table. | |
5378 | ||
dee91e82 DE |
5379 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
5380 | Otherwise, a new CU is allocated with xmalloc. | |
5381 | ||
5382 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
5383 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
5384 | ||
5385 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 5386 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 5387 | |
70221824 | 5388 | static void |
fd820528 | 5389 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 5390 | struct abbrev_table *abbrev_table, |
fd820528 DE |
5391 | int use_existing_cu, int keep, |
5392 | die_reader_func_ftype *die_reader_func, | |
5393 | void *data) | |
c906108c | 5394 | { |
dee91e82 | 5395 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 5396 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5397 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5398 | struct dwarf2_cu *cu; |
d521ce57 | 5399 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 5400 | struct die_reader_specs reader; |
d85a05f0 | 5401 | struct die_info *comp_unit_die; |
dee91e82 | 5402 | int has_children; |
d85a05f0 | 5403 | struct attribute *attr; |
365156ad | 5404 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 5405 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 5406 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
5407 | /* Non-zero if CU currently points to a DWO file and we need to |
5408 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 5409 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 5410 | int rereading_dwo_cu = 0; |
c906108c | 5411 | |
09406207 DE |
5412 | if (dwarf2_die_debug) |
5413 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5414 | this_cu->is_debug_types ? "type" : "comp", | |
5415 | this_cu->offset.sect_off); | |
5416 | ||
dee91e82 DE |
5417 | if (use_existing_cu) |
5418 | gdb_assert (keep); | |
23745b47 | 5419 | |
a2ce51a0 DE |
5420 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
5421 | file (instead of going through the stub), short-circuit all of this. */ | |
5422 | if (this_cu->reading_dwo_directly) | |
5423 | { | |
5424 | /* Narrow down the scope of possibilities to have to understand. */ | |
5425 | gdb_assert (this_cu->is_debug_types); | |
5426 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
5427 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
5428 | die_reader_func, data); | |
a2ce51a0 DE |
5429 | return; |
5430 | } | |
5431 | ||
dee91e82 DE |
5432 | cleanups = make_cleanup (null_cleanup, NULL); |
5433 | ||
5434 | /* This is cheap if the section is already read in. */ | |
5435 | dwarf2_read_section (objfile, section); | |
5436 | ||
5437 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
5438 | |
5439 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
5440 | |
5441 | if (use_existing_cu && this_cu->cu != NULL) | |
5442 | { | |
5443 | cu = this_cu->cu; | |
42e7ad6c DE |
5444 | /* If this CU is from a DWO file we need to start over, we need to |
5445 | refetch the attributes from the skeleton CU. | |
5446 | This could be optimized by retrieving those attributes from when we | |
5447 | were here the first time: the previous comp_unit_die was stored in | |
5448 | comp_unit_obstack. But there's no data yet that we need this | |
5449 | optimization. */ | |
5450 | if (cu->dwo_unit != NULL) | |
5451 | rereading_dwo_cu = 1; | |
dee91e82 DE |
5452 | } |
5453 | else | |
5454 | { | |
5455 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5456 | gdb_assert (this_cu->cu == NULL); | |
dee91e82 DE |
5457 | cu = xmalloc (sizeof (*cu)); |
5458 | init_one_comp_unit (cu, this_cu); | |
dee91e82 | 5459 | /* If an error occurs while loading, release our storage. */ |
365156ad | 5460 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 5461 | } |
dee91e82 | 5462 | |
b0c7bfa9 | 5463 | /* Get the header. */ |
42e7ad6c DE |
5464 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
5465 | { | |
5466 | /* We already have the header, there's no need to read it in again. */ | |
5467 | info_ptr += cu->header.first_die_offset.cu_off; | |
5468 | } | |
5469 | else | |
5470 | { | |
3019eac3 | 5471 | if (this_cu->is_debug_types) |
dee91e82 DE |
5472 | { |
5473 | ULONGEST signature; | |
42e7ad6c | 5474 | cu_offset type_offset_in_tu; |
dee91e82 | 5475 | |
4bdcc0c1 DE |
5476 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
5477 | abbrev_section, info_ptr, | |
42e7ad6c DE |
5478 | &signature, |
5479 | &type_offset_in_tu); | |
dee91e82 | 5480 | |
42e7ad6c DE |
5481 | /* Since per_cu is the first member of struct signatured_type, |
5482 | we can go from a pointer to one to a pointer to the other. */ | |
5483 | sig_type = (struct signatured_type *) this_cu; | |
5484 | gdb_assert (sig_type->signature == signature); | |
5485 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
5486 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
5487 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
5488 | ||
42e7ad6c DE |
5489 | /* LENGTH has not been set yet for type units if we're |
5490 | using .gdb_index. */ | |
1ce1cefd | 5491 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
5492 | |
5493 | /* Establish the type offset that can be used to lookup the type. */ | |
5494 | sig_type->type_offset_in_section.sect_off = | |
5495 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
5496 | } |
5497 | else | |
5498 | { | |
4bdcc0c1 DE |
5499 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
5500 | abbrev_section, | |
5501 | info_ptr, 0); | |
dee91e82 DE |
5502 | |
5503 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 5504 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
5505 | } |
5506 | } | |
10b3939b | 5507 | |
6caca83c | 5508 | /* Skip dummy compilation units. */ |
dee91e82 | 5509 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
5510 | || peek_abbrev_code (abfd, info_ptr) == 0) |
5511 | { | |
dee91e82 | 5512 | do_cleanups (cleanups); |
21b2bd31 | 5513 | return; |
6caca83c CC |
5514 | } |
5515 | ||
433df2d4 DE |
5516 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
5517 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
5518 | done. Note that it's important that if the CU had an abbrev table |
5519 | on entry we don't free it when we're done: Somewhere up the call stack | |
5520 | it may be in use. */ | |
f4dc4d17 DE |
5521 | if (abbrev_table != NULL) |
5522 | { | |
5523 | gdb_assert (cu->abbrev_table == NULL); | |
5524 | gdb_assert (cu->header.abbrev_offset.sect_off | |
5525 | == abbrev_table->offset.sect_off); | |
5526 | cu->abbrev_table = abbrev_table; | |
5527 | } | |
5528 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 5529 | { |
4bdcc0c1 | 5530 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
5531 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5532 | } | |
42e7ad6c DE |
5533 | else if (rereading_dwo_cu) |
5534 | { | |
5535 | dwarf2_free_abbrev_table (cu); | |
5536 | dwarf2_read_abbrevs (cu, abbrev_section); | |
5537 | } | |
af703f96 | 5538 | |
dee91e82 | 5539 | /* Read the top level CU/TU die. */ |
3019eac3 | 5540 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 5541 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 5542 | |
b0c7bfa9 DE |
5543 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
5544 | from the DWO file. | |
5545 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
5546 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
5547 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5548 | if (attr) | |
5549 | { | |
3019eac3 | 5550 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 5551 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
5552 | |
5553 | if (has_children) | |
6a506a2d DE |
5554 | { |
5555 | complaint (&symfile_complaints, | |
5556 | _("compilation unit with DW_AT_GNU_dwo_name" | |
5557 | " has children (offset 0x%x) [in module %s]"), | |
5558 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
5559 | } | |
b0c7bfa9 | 5560 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 5561 | if (dwo_unit != NULL) |
3019eac3 | 5562 | { |
6a506a2d DE |
5563 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
5564 | abbrev_table != NULL, | |
a2ce51a0 | 5565 | comp_unit_die, NULL, |
6a506a2d DE |
5566 | &reader, &info_ptr, |
5567 | &dwo_comp_unit_die, &has_children) == 0) | |
5568 | { | |
5569 | /* Dummy die. */ | |
5570 | do_cleanups (cleanups); | |
5571 | return; | |
5572 | } | |
5573 | comp_unit_die = dwo_comp_unit_die; | |
5574 | } | |
5575 | else | |
5576 | { | |
5577 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
5578 | the stub. A complaint has already been logged. There's | |
5579 | not much more we can do except pass on the stub DIE to | |
5580 | die_reader_func. We don't want to throw an error on bad | |
5581 | debug info. */ | |
3019eac3 DE |
5582 | } |
5583 | } | |
5584 | ||
b0c7bfa9 | 5585 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
5586 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
5587 | ||
b0c7bfa9 | 5588 | /* Done, clean up. */ |
365156ad | 5589 | if (free_cu_cleanup != NULL) |
348e048f | 5590 | { |
365156ad TT |
5591 | if (keep) |
5592 | { | |
5593 | /* We've successfully allocated this compilation unit. Let our | |
5594 | caller clean it up when finished with it. */ | |
5595 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 5596 | |
365156ad TT |
5597 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5598 | So we have to manually free the abbrev table. */ | |
5599 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 5600 | |
365156ad TT |
5601 | /* Link this CU into read_in_chain. */ |
5602 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5603 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5604 | } | |
5605 | else | |
5606 | do_cleanups (free_cu_cleanup); | |
348e048f | 5607 | } |
365156ad TT |
5608 | |
5609 | do_cleanups (cleanups); | |
dee91e82 DE |
5610 | } |
5611 | ||
33e80786 DE |
5612 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
5613 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
5614 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
5615 | |
5616 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 5617 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
5618 | |
5619 | We fill in THIS_CU->length. | |
5620 | ||
5621 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
5622 | linker) then DIE_READER_FUNC will not get called. | |
5623 | ||
5624 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5625 | This is done in order to not leave THIS_CU->cu in a state where we have |
5626 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
5627 | |
5628 | static void | |
5629 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 5630 | struct dwo_file *dwo_file, |
dee91e82 DE |
5631 | die_reader_func_ftype *die_reader_func, |
5632 | void *data) | |
5633 | { | |
5634 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 5635 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5636 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 5637 | struct dwarf2_section_info *abbrev_section; |
dee91e82 | 5638 | struct dwarf2_cu cu; |
d521ce57 | 5639 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
5640 | struct die_reader_specs reader; |
5641 | struct cleanup *cleanups; | |
5642 | struct die_info *comp_unit_die; | |
5643 | int has_children; | |
5644 | ||
09406207 DE |
5645 | if (dwarf2_die_debug) |
5646 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5647 | this_cu->is_debug_types ? "type" : "comp", | |
5648 | this_cu->offset.sect_off); | |
5649 | ||
dee91e82 DE |
5650 | gdb_assert (this_cu->cu == NULL); |
5651 | ||
33e80786 DE |
5652 | abbrev_section = (dwo_file != NULL |
5653 | ? &dwo_file->sections.abbrev | |
5654 | : get_abbrev_section_for_cu (this_cu)); | |
5655 | ||
dee91e82 DE |
5656 | /* This is cheap if the section is already read in. */ |
5657 | dwarf2_read_section (objfile, section); | |
5658 | ||
5659 | init_one_comp_unit (&cu, this_cu); | |
5660 | ||
5661 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
5662 | ||
5663 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
5664 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
5665 | abbrev_section, info_ptr, | |
3019eac3 | 5666 | this_cu->is_debug_types); |
dee91e82 | 5667 | |
1ce1cefd | 5668 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
5669 | |
5670 | /* Skip dummy compilation units. */ | |
5671 | if (info_ptr >= begin_info_ptr + this_cu->length | |
5672 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 5673 | { |
dee91e82 | 5674 | do_cleanups (cleanups); |
21b2bd31 | 5675 | return; |
93311388 | 5676 | } |
72bf9492 | 5677 | |
dee91e82 DE |
5678 | dwarf2_read_abbrevs (&cu, abbrev_section); |
5679 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
5680 | ||
3019eac3 | 5681 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
5682 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
5683 | ||
5684 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5685 | ||
5686 | do_cleanups (cleanups); | |
5687 | } | |
5688 | ||
3019eac3 DE |
5689 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
5690 | does not lookup the specified DWO file. | |
5691 | This cannot be used to read DWO files. | |
dee91e82 DE |
5692 | |
5693 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5694 | This is done in order to not leave THIS_CU->cu in a state where we have |
5695 | to care whether it refers to the "main" CU or the DWO CU. | |
5696 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
5697 | |
5698 | static void | |
5699 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
5700 | die_reader_func_ftype *die_reader_func, | |
5701 | void *data) | |
5702 | { | |
33e80786 | 5703 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 5704 | } |
0018ea6f DE |
5705 | \f |
5706 | /* Type Unit Groups. | |
dee91e82 | 5707 | |
0018ea6f DE |
5708 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
5709 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
5710 | so that all types coming from the same compilation (.o file) are grouped | |
5711 | together. A future step could be to put the types in the same symtab as | |
5712 | the CU the types ultimately came from. */ | |
ff013f42 | 5713 | |
f4dc4d17 DE |
5714 | static hashval_t |
5715 | hash_type_unit_group (const void *item) | |
5716 | { | |
094b34ac | 5717 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 5718 | |
094b34ac | 5719 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5720 | } |
348e048f DE |
5721 | |
5722 | static int | |
f4dc4d17 | 5723 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5724 | { |
f4dc4d17 DE |
5725 | const struct type_unit_group *lhs = item_lhs; |
5726 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 5727 | |
094b34ac | 5728 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5729 | } |
348e048f | 5730 | |
f4dc4d17 DE |
5731 | /* Allocate a hash table for type unit groups. */ |
5732 | ||
5733 | static htab_t | |
5734 | allocate_type_unit_groups_table (void) | |
5735 | { | |
5736 | return htab_create_alloc_ex (3, | |
5737 | hash_type_unit_group, | |
5738 | eq_type_unit_group, | |
5739 | NULL, | |
5740 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5741 | hashtab_obstack_allocate, | |
5742 | dummy_obstack_deallocate); | |
5743 | } | |
dee91e82 | 5744 | |
f4dc4d17 DE |
5745 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5746 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5747 | of any one psymtab grow too big. */ | |
5748 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5749 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5750 | |
094b34ac | 5751 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5752 | Create the type_unit_group object used to hold one or more TUs. */ |
5753 | ||
5754 | static struct type_unit_group * | |
094b34ac | 5755 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5756 | { |
5757 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5758 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5759 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5760 | |
5761 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5762 | struct type_unit_group); | |
094b34ac | 5763 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 5764 | per_cu->objfile = objfile; |
f4dc4d17 | 5765 | |
094b34ac DE |
5766 | if (dwarf2_per_objfile->using_index) |
5767 | { | |
5768 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5769 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
5770 | } |
5771 | else | |
5772 | { | |
5773 | unsigned int line_offset = line_offset_struct.sect_off; | |
5774 | struct partial_symtab *pst; | |
5775 | char *name; | |
5776 | ||
5777 | /* Give the symtab a useful name for debug purposes. */ | |
5778 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5779 | name = xstrprintf ("<type_units_%d>", | |
5780 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5781 | else | |
5782 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5783 | ||
5784 | pst = create_partial_symtab (per_cu, name); | |
5785 | pst->anonymous = 1; | |
f4dc4d17 | 5786 | |
094b34ac DE |
5787 | xfree (name); |
5788 | } | |
f4dc4d17 | 5789 | |
094b34ac DE |
5790 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5791 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5792 | |
5793 | return tu_group; | |
5794 | } | |
5795 | ||
094b34ac DE |
5796 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5797 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5798 | |
5799 | static struct type_unit_group * | |
ff39bb5e | 5800 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
5801 | { |
5802 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5803 | struct type_unit_group *tu_group; | |
5804 | void **slot; | |
5805 | unsigned int line_offset; | |
5806 | struct type_unit_group type_unit_group_for_lookup; | |
5807 | ||
5808 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5809 | { | |
5810 | dwarf2_per_objfile->type_unit_groups = | |
5811 | allocate_type_unit_groups_table (); | |
5812 | } | |
5813 | ||
5814 | /* Do we need to create a new group, or can we use an existing one? */ | |
5815 | ||
5816 | if (stmt_list) | |
5817 | { | |
5818 | line_offset = DW_UNSND (stmt_list); | |
5819 | ++tu_stats->nr_symtab_sharers; | |
5820 | } | |
5821 | else | |
5822 | { | |
5823 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5824 | We can do various things here like create one group per TU or | |
5825 | spread them over multiple groups to split up the expansion work. | |
5826 | To avoid worst case scenarios (too many groups or too large groups) | |
5827 | we, umm, group them in bunches. */ | |
5828 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5829 | | (tu_stats->nr_stmt_less_type_units | |
5830 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5831 | ++tu_stats->nr_stmt_less_type_units; | |
5832 | } | |
5833 | ||
094b34ac DE |
5834 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5835 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5836 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5837 | &type_unit_group_for_lookup, INSERT); | |
5838 | if (*slot != NULL) | |
5839 | { | |
5840 | tu_group = *slot; | |
5841 | gdb_assert (tu_group != NULL); | |
5842 | } | |
5843 | else | |
5844 | { | |
5845 | sect_offset line_offset_struct; | |
5846 | ||
5847 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5848 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5849 | *slot = tu_group; |
5850 | ++tu_stats->nr_symtabs; | |
5851 | } | |
5852 | ||
5853 | return tu_group; | |
5854 | } | |
0018ea6f DE |
5855 | \f |
5856 | /* Partial symbol tables. */ | |
5857 | ||
5858 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5859 | ||
5860 | The caller must fill in the following details: | |
5861 | dirname, textlow, texthigh. */ | |
5862 | ||
5863 | static struct partial_symtab * | |
5864 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5865 | { | |
5866 | struct objfile *objfile = per_cu->objfile; | |
5867 | struct partial_symtab *pst; | |
5868 | ||
5869 | pst = start_psymtab_common (objfile, objfile->section_offsets, | |
5870 | name, 0, | |
5871 | objfile->global_psymbols.next, | |
5872 | objfile->static_psymbols.next); | |
5873 | ||
5874 | pst->psymtabs_addrmap_supported = 1; | |
5875 | ||
5876 | /* This is the glue that links PST into GDB's symbol API. */ | |
5877 | pst->read_symtab_private = per_cu; | |
5878 | pst->read_symtab = dwarf2_read_symtab; | |
5879 | per_cu->v.psymtab = pst; | |
5880 | ||
5881 | return pst; | |
5882 | } | |
5883 | ||
b93601f3 TT |
5884 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
5885 | type. */ | |
5886 | ||
5887 | struct process_psymtab_comp_unit_data | |
5888 | { | |
5889 | /* True if we are reading a DW_TAG_partial_unit. */ | |
5890 | ||
5891 | int want_partial_unit; | |
5892 | ||
5893 | /* The "pretend" language that is used if the CU doesn't declare a | |
5894 | language. */ | |
5895 | ||
5896 | enum language pretend_language; | |
5897 | }; | |
5898 | ||
0018ea6f DE |
5899 | /* die_reader_func for process_psymtab_comp_unit. */ |
5900 | ||
5901 | static void | |
5902 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 5903 | const gdb_byte *info_ptr, |
0018ea6f DE |
5904 | struct die_info *comp_unit_die, |
5905 | int has_children, | |
5906 | void *data) | |
5907 | { | |
5908 | struct dwarf2_cu *cu = reader->cu; | |
5909 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 5910 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f DE |
5911 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
5912 | struct attribute *attr; | |
5913 | CORE_ADDR baseaddr; | |
5914 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
5915 | struct partial_symtab *pst; | |
5916 | int has_pc_info; | |
5917 | const char *filename; | |
b93601f3 | 5918 | struct process_psymtab_comp_unit_data *info = data; |
0018ea6f | 5919 | |
b93601f3 | 5920 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
5921 | return; |
5922 | ||
5923 | gdb_assert (! per_cu->is_debug_types); | |
5924 | ||
b93601f3 | 5925 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
5926 | |
5927 | cu->list_in_scope = &file_symbols; | |
5928 | ||
5929 | /* Allocate a new partial symbol table structure. */ | |
5930 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
5931 | if (attr == NULL || !DW_STRING (attr)) | |
5932 | filename = ""; | |
5933 | else | |
5934 | filename = DW_STRING (attr); | |
5935 | ||
5936 | pst = create_partial_symtab (per_cu, filename); | |
5937 | ||
5938 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
5939 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5940 | if (attr != NULL) | |
5941 | pst->dirname = DW_STRING (attr); | |
5942 | ||
5943 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5944 | ||
5945 | dwarf2_find_base_address (comp_unit_die, cu); | |
5946 | ||
5947 | /* Possibly set the default values of LOWPC and HIGHPC from | |
5948 | `DW_AT_ranges'. */ | |
5949 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, | |
5950 | &best_highpc, cu, pst); | |
5951 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
5952 | /* Store the contiguous range if it is not empty; it can be empty for | |
5953 | CUs with no code. */ | |
5954 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
5955 | gdbarch_adjust_dwarf2_addr (gdbarch, |
5956 | best_lowpc + baseaddr), | |
5957 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
5958 | best_highpc + baseaddr) - 1, | |
5959 | pst); | |
0018ea6f DE |
5960 | |
5961 | /* Check if comp unit has_children. | |
5962 | If so, read the rest of the partial symbols from this comp unit. | |
5963 | If not, there's no more debug_info for this comp unit. */ | |
5964 | if (has_children) | |
5965 | { | |
5966 | struct partial_die_info *first_die; | |
5967 | CORE_ADDR lowpc, highpc; | |
5968 | ||
5969 | lowpc = ((CORE_ADDR) -1); | |
5970 | highpc = ((CORE_ADDR) 0); | |
5971 | ||
5972 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5973 | ||
5974 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
5975 | ! has_pc_info, cu); | |
5976 | ||
5977 | /* If we didn't find a lowpc, set it to highpc to avoid | |
5978 | complaints from `maint check'. */ | |
5979 | if (lowpc == ((CORE_ADDR) -1)) | |
5980 | lowpc = highpc; | |
5981 | ||
5982 | /* If the compilation unit didn't have an explicit address range, | |
5983 | then use the information extracted from its child dies. */ | |
5984 | if (! has_pc_info) | |
5985 | { | |
5986 | best_lowpc = lowpc; | |
5987 | best_highpc = highpc; | |
5988 | } | |
5989 | } | |
3e29f34a MR |
5990 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
5991 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f DE |
5992 | |
5993 | pst->n_global_syms = objfile->global_psymbols.next - | |
5994 | (objfile->global_psymbols.list + pst->globals_offset); | |
5995 | pst->n_static_syms = objfile->static_psymbols.next - | |
5996 | (objfile->static_psymbols.list + pst->statics_offset); | |
5997 | sort_pst_symbols (objfile, pst); | |
5998 | ||
5999 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
6000 | { | |
6001 | int i; | |
6002 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6003 | struct dwarf2_per_cu_data *iter; | |
6004 | ||
6005 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
6006 | post-pass. */ | |
6007 | pst->number_of_dependencies = len; | |
6008 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6009 | len * sizeof (struct symtab *)); | |
6010 | for (i = 0; | |
6011 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6012 | i, iter); | |
6013 | ++i) | |
6014 | pst->dependencies[i] = iter->v.psymtab; | |
6015 | ||
6016 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6017 | } | |
6018 | ||
6019 | /* Get the list of files included in the current compilation unit, | |
6020 | and build a psymtab for each of them. */ | |
6021 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
6022 | ||
6023 | if (dwarf2_read_debug) | |
6024 | { | |
6025 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6026 | ||
6027 | fprintf_unfiltered (gdb_stdlog, | |
6028 | "Psymtab for %s unit @0x%x: %s - %s" | |
6029 | ", %d global, %d static syms\n", | |
6030 | per_cu->is_debug_types ? "type" : "comp", | |
6031 | per_cu->offset.sect_off, | |
6032 | paddress (gdbarch, pst->textlow), | |
6033 | paddress (gdbarch, pst->texthigh), | |
6034 | pst->n_global_syms, pst->n_static_syms); | |
6035 | } | |
6036 | } | |
6037 | ||
6038 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6039 | Process compilation unit THIS_CU for a psymtab. */ | |
6040 | ||
6041 | static void | |
6042 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
6043 | int want_partial_unit, |
6044 | enum language pretend_language) | |
0018ea6f | 6045 | { |
b93601f3 TT |
6046 | struct process_psymtab_comp_unit_data info; |
6047 | ||
0018ea6f DE |
6048 | /* If this compilation unit was already read in, free the |
6049 | cached copy in order to read it in again. This is | |
6050 | necessary because we skipped some symbols when we first | |
6051 | read in the compilation unit (see load_partial_dies). | |
6052 | This problem could be avoided, but the benefit is unclear. */ | |
6053 | if (this_cu->cu != NULL) | |
6054 | free_one_cached_comp_unit (this_cu); | |
6055 | ||
6056 | gdb_assert (! this_cu->is_debug_types); | |
b93601f3 TT |
6057 | info.want_partial_unit = want_partial_unit; |
6058 | info.pretend_language = pretend_language; | |
0018ea6f DE |
6059 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
6060 | process_psymtab_comp_unit_reader, | |
b93601f3 | 6061 | &info); |
0018ea6f DE |
6062 | |
6063 | /* Age out any secondary CUs. */ | |
6064 | age_cached_comp_units (); | |
6065 | } | |
f4dc4d17 DE |
6066 | |
6067 | /* Reader function for build_type_psymtabs. */ | |
6068 | ||
6069 | static void | |
6070 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6071 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
6072 | struct die_info *type_unit_die, |
6073 | int has_children, | |
6074 | void *data) | |
6075 | { | |
6076 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6077 | struct dwarf2_cu *cu = reader->cu; | |
6078 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 6079 | struct signatured_type *sig_type; |
f4dc4d17 DE |
6080 | struct type_unit_group *tu_group; |
6081 | struct attribute *attr; | |
6082 | struct partial_die_info *first_die; | |
6083 | CORE_ADDR lowpc, highpc; | |
6084 | struct partial_symtab *pst; | |
6085 | ||
6086 | gdb_assert (data == NULL); | |
0186c6a7 DE |
6087 | gdb_assert (per_cu->is_debug_types); |
6088 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
6089 | |
6090 | if (! has_children) | |
6091 | return; | |
6092 | ||
6093 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 6094 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 6095 | |
0186c6a7 | 6096 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
6097 | |
6098 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
6099 | cu->list_in_scope = &file_symbols; | |
6100 | pst = create_partial_symtab (per_cu, ""); | |
6101 | pst->anonymous = 1; | |
6102 | ||
6103 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6104 | ||
6105 | lowpc = (CORE_ADDR) -1; | |
6106 | highpc = (CORE_ADDR) 0; | |
6107 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
6108 | ||
6109 | pst->n_global_syms = objfile->global_psymbols.next - | |
6110 | (objfile->global_psymbols.list + pst->globals_offset); | |
6111 | pst->n_static_syms = objfile->static_psymbols.next - | |
6112 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 6113 | sort_pst_symbols (objfile, pst); |
f4dc4d17 DE |
6114 | } |
6115 | ||
73051182 DE |
6116 | /* Struct used to sort TUs by their abbreviation table offset. */ |
6117 | ||
6118 | struct tu_abbrev_offset | |
6119 | { | |
6120 | struct signatured_type *sig_type; | |
6121 | sect_offset abbrev_offset; | |
6122 | }; | |
6123 | ||
6124 | /* Helper routine for build_type_psymtabs_1, passed to qsort. */ | |
6125 | ||
6126 | static int | |
6127 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
6128 | { | |
6129 | const struct tu_abbrev_offset * const *a = ap; | |
6130 | const struct tu_abbrev_offset * const *b = bp; | |
6131 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
6132 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
6133 | ||
6134 | return (aoff > boff) - (aoff < boff); | |
6135 | } | |
6136 | ||
6137 | /* Efficiently read all the type units. | |
6138 | This does the bulk of the work for build_type_psymtabs. | |
6139 | ||
6140 | The efficiency is because we sort TUs by the abbrev table they use and | |
6141 | only read each abbrev table once. In one program there are 200K TUs | |
6142 | sharing 8K abbrev tables. | |
6143 | ||
6144 | The main purpose of this function is to support building the | |
6145 | dwarf2_per_objfile->type_unit_groups table. | |
6146 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
6147 | can collapse the search space by grouping them by stmt_list. | |
6148 | The savings can be significant, in the same program from above the 200K TUs | |
6149 | share 8K stmt_list tables. | |
6150 | ||
6151 | FUNC is expected to call get_type_unit_group, which will create the | |
6152 | struct type_unit_group if necessary and add it to | |
6153 | dwarf2_per_objfile->type_unit_groups. */ | |
6154 | ||
6155 | static void | |
6156 | build_type_psymtabs_1 (void) | |
6157 | { | |
6158 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6159 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6160 | struct cleanup *cleanups; | |
6161 | struct abbrev_table *abbrev_table; | |
6162 | sect_offset abbrev_offset; | |
6163 | struct tu_abbrev_offset *sorted_by_abbrev; | |
6164 | struct type_unit_group **iter; | |
6165 | int i; | |
6166 | ||
6167 | /* It's up to the caller to not call us multiple times. */ | |
6168 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
6169 | ||
6170 | if (dwarf2_per_objfile->n_type_units == 0) | |
6171 | return; | |
6172 | ||
6173 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
6174 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
6175 | read each abbrev table in. | |
6176 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
6177 | This is simpler and efficient enough for now. | |
6178 | ||
6179 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
6180 | symtab to use). Typically TUs with the same abbrev offset have the same | |
6181 | stmt_list value too so in practice this should work well. | |
6182 | ||
6183 | The basic algorithm here is: | |
6184 | ||
6185 | sort TUs by abbrev table | |
6186 | for each TU with same abbrev table: | |
6187 | read abbrev table if first user | |
6188 | read TU top level DIE | |
6189 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
6190 | call FUNC */ | |
6191 | ||
6192 | if (dwarf2_read_debug) | |
6193 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); | |
6194 | ||
6195 | /* Sort in a separate table to maintain the order of all_type_units | |
6196 | for .gdb_index: TU indices directly index all_type_units. */ | |
6197 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
6198 | dwarf2_per_objfile->n_type_units); | |
6199 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6200 | { | |
6201 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
6202 | ||
6203 | sorted_by_abbrev[i].sig_type = sig_type; | |
6204 | sorted_by_abbrev[i].abbrev_offset = | |
6205 | read_abbrev_offset (sig_type->per_cu.section, | |
6206 | sig_type->per_cu.offset); | |
6207 | } | |
6208 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
6209 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
6210 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
6211 | ||
6212 | abbrev_offset.sect_off = ~(unsigned) 0; | |
6213 | abbrev_table = NULL; | |
6214 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
6215 | ||
6216 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6217 | { | |
6218 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
6219 | ||
6220 | /* Switch to the next abbrev table if necessary. */ | |
6221 | if (abbrev_table == NULL | |
6222 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
6223 | { | |
6224 | if (abbrev_table != NULL) | |
6225 | { | |
6226 | abbrev_table_free (abbrev_table); | |
6227 | /* Reset to NULL in case abbrev_table_read_table throws | |
6228 | an error: abbrev_table_free_cleanup will get called. */ | |
6229 | abbrev_table = NULL; | |
6230 | } | |
6231 | abbrev_offset = tu->abbrev_offset; | |
6232 | abbrev_table = | |
6233 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
6234 | abbrev_offset); | |
6235 | ++tu_stats->nr_uniq_abbrev_tables; | |
6236 | } | |
6237 | ||
6238 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
6239 | build_type_psymtabs_reader, NULL); | |
6240 | } | |
6241 | ||
73051182 | 6242 | do_cleanups (cleanups); |
6aa5f3a6 | 6243 | } |
73051182 | 6244 | |
6aa5f3a6 DE |
6245 | /* Print collected type unit statistics. */ |
6246 | ||
6247 | static void | |
6248 | print_tu_stats (void) | |
6249 | { | |
6250 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6251 | ||
6252 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
6253 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
6254 | dwarf2_per_objfile->n_type_units); | |
6255 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
6256 | tu_stats->nr_uniq_abbrev_tables); | |
6257 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
6258 | tu_stats->nr_symtabs); | |
6259 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
6260 | tu_stats->nr_symtab_sharers); | |
6261 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
6262 | tu_stats->nr_stmt_less_type_units); | |
6263 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
6264 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
6265 | } |
6266 | ||
f4dc4d17 DE |
6267 | /* Traversal function for build_type_psymtabs. */ |
6268 | ||
6269 | static int | |
6270 | build_type_psymtab_dependencies (void **slot, void *info) | |
6271 | { | |
6272 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6273 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 6274 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 6275 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
6276 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
6277 | struct signatured_type *iter; | |
f4dc4d17 DE |
6278 | int i; |
6279 | ||
6280 | gdb_assert (len > 0); | |
0186c6a7 | 6281 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
6282 | |
6283 | pst->number_of_dependencies = len; | |
6284 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6285 | len * sizeof (struct psymtab *)); | |
6286 | for (i = 0; | |
0186c6a7 | 6287 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
6288 | ++i) |
6289 | { | |
0186c6a7 DE |
6290 | gdb_assert (iter->per_cu.is_debug_types); |
6291 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 6292 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
6293 | } |
6294 | ||
0186c6a7 | 6295 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
6296 | |
6297 | return 1; | |
6298 | } | |
6299 | ||
6300 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6301 | Build partial symbol tables for the .debug_types comp-units. */ | |
6302 | ||
6303 | static void | |
6304 | build_type_psymtabs (struct objfile *objfile) | |
6305 | { | |
0e50663e | 6306 | if (! create_all_type_units (objfile)) |
348e048f DE |
6307 | return; |
6308 | ||
73051182 | 6309 | build_type_psymtabs_1 (); |
6aa5f3a6 | 6310 | } |
f4dc4d17 | 6311 | |
6aa5f3a6 DE |
6312 | /* Traversal function for process_skeletonless_type_unit. |
6313 | Read a TU in a DWO file and build partial symbols for it. */ | |
6314 | ||
6315 | static int | |
6316 | process_skeletonless_type_unit (void **slot, void *info) | |
6317 | { | |
6318 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
6319 | struct objfile *objfile = info; | |
6320 | struct signatured_type find_entry, *entry; | |
6321 | ||
6322 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
6323 | ||
6324 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6325 | { | |
6326 | dwarf2_per_objfile->signatured_types | |
6327 | = allocate_signatured_type_table (objfile); | |
6328 | } | |
6329 | ||
6330 | find_entry.signature = dwo_unit->signature; | |
6331 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
6332 | INSERT); | |
6333 | /* If we've already seen this type there's nothing to do. What's happening | |
6334 | is we're doing our own version of comdat-folding here. */ | |
6335 | if (*slot != NULL) | |
6336 | return 1; | |
6337 | ||
6338 | /* This does the job that create_all_type_units would have done for | |
6339 | this TU. */ | |
6340 | entry = add_type_unit (dwo_unit->signature, slot); | |
6341 | fill_in_sig_entry_from_dwo_entry (objfile, entry, dwo_unit); | |
6342 | *slot = entry; | |
6343 | ||
6344 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6345 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
6346 | build_type_psymtabs_reader, NULL); | |
6347 | ||
6348 | return 1; | |
6349 | } | |
6350 | ||
6351 | /* Traversal function for process_skeletonless_type_units. */ | |
6352 | ||
6353 | static int | |
6354 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
6355 | { | |
6356 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
6357 | ||
6358 | if (dwo_file->tus != NULL) | |
6359 | { | |
6360 | htab_traverse_noresize (dwo_file->tus, | |
6361 | process_skeletonless_type_unit, info); | |
6362 | } | |
6363 | ||
6364 | return 1; | |
6365 | } | |
6366 | ||
6367 | /* Scan all TUs of DWO files, verifying we've processed them. | |
6368 | This is needed in case a TU was emitted without its skeleton. | |
6369 | Note: This can't be done until we know what all the DWO files are. */ | |
6370 | ||
6371 | static void | |
6372 | process_skeletonless_type_units (struct objfile *objfile) | |
6373 | { | |
6374 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
6375 | if (get_dwp_file () == NULL | |
6376 | && dwarf2_per_objfile->dwo_files != NULL) | |
6377 | { | |
6378 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
6379 | process_dwo_file_for_skeletonless_type_units, | |
6380 | objfile); | |
6381 | } | |
348e048f DE |
6382 | } |
6383 | ||
60606b2c TT |
6384 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
6385 | ||
6386 | static void | |
6387 | psymtabs_addrmap_cleanup (void *o) | |
6388 | { | |
6389 | struct objfile *objfile = o; | |
ec61707d | 6390 | |
60606b2c TT |
6391 | objfile->psymtabs_addrmap = NULL; |
6392 | } | |
6393 | ||
95554aad TT |
6394 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
6395 | ||
6396 | static void | |
6397 | set_partial_user (struct objfile *objfile) | |
6398 | { | |
6399 | int i; | |
6400 | ||
6401 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
6402 | { | |
8832e7e3 | 6403 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
95554aad TT |
6404 | struct partial_symtab *pst = per_cu->v.psymtab; |
6405 | int j; | |
6406 | ||
36586728 TT |
6407 | if (pst == NULL) |
6408 | continue; | |
6409 | ||
95554aad TT |
6410 | for (j = 0; j < pst->number_of_dependencies; ++j) |
6411 | { | |
6412 | /* Set the 'user' field only if it is not already set. */ | |
6413 | if (pst->dependencies[j]->user == NULL) | |
6414 | pst->dependencies[j]->user = pst; | |
6415 | } | |
6416 | } | |
6417 | } | |
6418 | ||
93311388 DE |
6419 | /* Build the partial symbol table by doing a quick pass through the |
6420 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 6421 | |
93311388 | 6422 | static void |
c67a9c90 | 6423 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 6424 | { |
60606b2c TT |
6425 | struct cleanup *back_to, *addrmap_cleanup; |
6426 | struct obstack temp_obstack; | |
21b2bd31 | 6427 | int i; |
93311388 | 6428 | |
45cfd468 DE |
6429 | if (dwarf2_read_debug) |
6430 | { | |
6431 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 6432 | objfile_name (objfile)); |
45cfd468 DE |
6433 | } |
6434 | ||
98bfdba5 PA |
6435 | dwarf2_per_objfile->reading_partial_symbols = 1; |
6436 | ||
be391dca | 6437 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 6438 | |
93311388 DE |
6439 | /* Any cached compilation units will be linked by the per-objfile |
6440 | read_in_chain. Make sure to free them when we're done. */ | |
6441 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 6442 | |
348e048f DE |
6443 | build_type_psymtabs (objfile); |
6444 | ||
93311388 | 6445 | create_all_comp_units (objfile); |
c906108c | 6446 | |
60606b2c TT |
6447 | /* Create a temporary address map on a temporary obstack. We later |
6448 | copy this to the final obstack. */ | |
6449 | obstack_init (&temp_obstack); | |
6450 | make_cleanup_obstack_free (&temp_obstack); | |
6451 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
6452 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 6453 | |
21b2bd31 | 6454 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 6455 | { |
8832e7e3 | 6456 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
aaa75496 | 6457 | |
b93601f3 | 6458 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 6459 | } |
ff013f42 | 6460 | |
6aa5f3a6 DE |
6461 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
6462 | process_skeletonless_type_units (objfile); | |
6463 | ||
6464 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
6465 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
6466 | { | |
6467 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
6468 | build_type_psymtab_dependencies, NULL); | |
6469 | } | |
6470 | ||
6471 | if (dwarf2_read_debug) | |
6472 | print_tu_stats (); | |
6473 | ||
95554aad TT |
6474 | set_partial_user (objfile); |
6475 | ||
ff013f42 JK |
6476 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
6477 | &objfile->objfile_obstack); | |
60606b2c | 6478 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 6479 | |
ae038cb0 | 6480 | do_cleanups (back_to); |
45cfd468 DE |
6481 | |
6482 | if (dwarf2_read_debug) | |
6483 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
4262abfb | 6484 | objfile_name (objfile)); |
ae038cb0 DJ |
6485 | } |
6486 | ||
3019eac3 | 6487 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
6488 | |
6489 | static void | |
dee91e82 | 6490 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 6491 | const gdb_byte *info_ptr, |
dee91e82 DE |
6492 | struct die_info *comp_unit_die, |
6493 | int has_children, | |
6494 | void *data) | |
ae038cb0 | 6495 | { |
dee91e82 | 6496 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 6497 | |
95554aad | 6498 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 6499 | |
ae038cb0 DJ |
6500 | /* Check if comp unit has_children. |
6501 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 6502 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 6503 | if (has_children) |
dee91e82 DE |
6504 | load_partial_dies (reader, info_ptr, 0); |
6505 | } | |
98bfdba5 | 6506 | |
dee91e82 DE |
6507 | /* Load the partial DIEs for a secondary CU into memory. |
6508 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 6509 | |
dee91e82 DE |
6510 | static void |
6511 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
6512 | { | |
f4dc4d17 DE |
6513 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6514 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
6515 | } |
6516 | ||
ae038cb0 | 6517 | static void |
36586728 TT |
6518 | read_comp_units_from_section (struct objfile *objfile, |
6519 | struct dwarf2_section_info *section, | |
6520 | unsigned int is_dwz, | |
6521 | int *n_allocated, | |
6522 | int *n_comp_units, | |
6523 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 6524 | { |
d521ce57 | 6525 | const gdb_byte *info_ptr; |
a32a8923 | 6526 | bfd *abfd = get_section_bfd_owner (section); |
be391dca | 6527 | |
bf6af496 DE |
6528 | if (dwarf2_read_debug) |
6529 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", | |
a32a8923 DE |
6530 | get_section_name (section), |
6531 | get_section_file_name (section)); | |
bf6af496 | 6532 | |
36586728 | 6533 | dwarf2_read_section (objfile, section); |
ae038cb0 | 6534 | |
36586728 | 6535 | info_ptr = section->buffer; |
6e70227d | 6536 | |
36586728 | 6537 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 6538 | { |
c764a876 | 6539 | unsigned int length, initial_length_size; |
ae038cb0 | 6540 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 6541 | sect_offset offset; |
ae038cb0 | 6542 | |
36586728 | 6543 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
6544 | |
6545 | /* Read just enough information to find out where the next | |
6546 | compilation unit is. */ | |
36586728 | 6547 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
6548 | |
6549 | /* Save the compilation unit for later lookup. */ | |
6550 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
6551 | sizeof (struct dwarf2_per_cu_data)); | |
6552 | memset (this_cu, 0, sizeof (*this_cu)); | |
6553 | this_cu->offset = offset; | |
c764a876 | 6554 | this_cu->length = length + initial_length_size; |
36586728 | 6555 | this_cu->is_dwz = is_dwz; |
9291a0cd | 6556 | this_cu->objfile = objfile; |
8a0459fd | 6557 | this_cu->section = section; |
ae038cb0 | 6558 | |
36586728 | 6559 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 6560 | { |
36586728 TT |
6561 | *n_allocated *= 2; |
6562 | *all_comp_units = xrealloc (*all_comp_units, | |
6563 | *n_allocated | |
6564 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 6565 | } |
36586728 TT |
6566 | (*all_comp_units)[*n_comp_units] = this_cu; |
6567 | ++*n_comp_units; | |
ae038cb0 DJ |
6568 | |
6569 | info_ptr = info_ptr + this_cu->length; | |
6570 | } | |
36586728 TT |
6571 | } |
6572 | ||
6573 | /* Create a list of all compilation units in OBJFILE. | |
6574 | This is only done for -readnow and building partial symtabs. */ | |
6575 | ||
6576 | static void | |
6577 | create_all_comp_units (struct objfile *objfile) | |
6578 | { | |
6579 | int n_allocated; | |
6580 | int n_comp_units; | |
6581 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 6582 | struct dwz_file *dwz; |
36586728 TT |
6583 | |
6584 | n_comp_units = 0; | |
6585 | n_allocated = 10; | |
6586 | all_comp_units = xmalloc (n_allocated | |
6587 | * sizeof (struct dwarf2_per_cu_data *)); | |
6588 | ||
6589 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
6590 | &n_allocated, &n_comp_units, &all_comp_units); | |
6591 | ||
4db1a1dc TT |
6592 | dwz = dwarf2_get_dwz_file (); |
6593 | if (dwz != NULL) | |
6594 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
6595 | &n_allocated, &n_comp_units, | |
6596 | &all_comp_units); | |
ae038cb0 DJ |
6597 | |
6598 | dwarf2_per_objfile->all_comp_units | |
6599 | = obstack_alloc (&objfile->objfile_obstack, | |
6600 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6601 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
6602 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6603 | xfree (all_comp_units); | |
6604 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
6605 | } |
6606 | ||
5734ee8b | 6607 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 6608 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 6609 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
6610 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
6611 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 6612 | |
72bf9492 DJ |
6613 | static void |
6614 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
6615 | CORE_ADDR *highpc, int set_addrmap, |
6616 | struct dwarf2_cu *cu) | |
c906108c | 6617 | { |
72bf9492 | 6618 | struct partial_die_info *pdi; |
c906108c | 6619 | |
91c24f0a DC |
6620 | /* Now, march along the PDI's, descending into ones which have |
6621 | interesting children but skipping the children of the other ones, | |
6622 | until we reach the end of the compilation unit. */ | |
c906108c | 6623 | |
72bf9492 | 6624 | pdi = first_die; |
91c24f0a | 6625 | |
72bf9492 DJ |
6626 | while (pdi != NULL) |
6627 | { | |
6628 | fixup_partial_die (pdi, cu); | |
c906108c | 6629 | |
f55ee35c | 6630 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
6631 | children, so we need to look at them. Ditto for anonymous |
6632 | enums. */ | |
933c6fe4 | 6633 | |
72bf9492 | 6634 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
6635 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
6636 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 6637 | { |
72bf9492 | 6638 | switch (pdi->tag) |
c906108c SS |
6639 | { |
6640 | case DW_TAG_subprogram: | |
cdc07690 | 6641 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 6642 | break; |
72929c62 | 6643 | case DW_TAG_constant: |
c906108c SS |
6644 | case DW_TAG_variable: |
6645 | case DW_TAG_typedef: | |
91c24f0a | 6646 | case DW_TAG_union_type: |
72bf9492 | 6647 | if (!pdi->is_declaration) |
63d06c5c | 6648 | { |
72bf9492 | 6649 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
6650 | } |
6651 | break; | |
c906108c | 6652 | case DW_TAG_class_type: |
680b30c7 | 6653 | case DW_TAG_interface_type: |
c906108c | 6654 | case DW_TAG_structure_type: |
72bf9492 | 6655 | if (!pdi->is_declaration) |
c906108c | 6656 | { |
72bf9492 | 6657 | add_partial_symbol (pdi, cu); |
c906108c SS |
6658 | } |
6659 | break; | |
91c24f0a | 6660 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
6661 | if (!pdi->is_declaration) |
6662 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
6663 | break; |
6664 | case DW_TAG_base_type: | |
a02abb62 | 6665 | case DW_TAG_subrange_type: |
c906108c | 6666 | /* File scope base type definitions are added to the partial |
c5aa993b | 6667 | symbol table. */ |
72bf9492 | 6668 | add_partial_symbol (pdi, cu); |
c906108c | 6669 | break; |
d9fa45fe | 6670 | case DW_TAG_namespace: |
cdc07690 | 6671 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 6672 | break; |
5d7cb8df | 6673 | case DW_TAG_module: |
cdc07690 | 6674 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 6675 | break; |
95554aad TT |
6676 | case DW_TAG_imported_unit: |
6677 | { | |
6678 | struct dwarf2_per_cu_data *per_cu; | |
6679 | ||
f4dc4d17 DE |
6680 | /* For now we don't handle imported units in type units. */ |
6681 | if (cu->per_cu->is_debug_types) | |
6682 | { | |
6683 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6684 | " supported in type units [in module %s]"), | |
4262abfb | 6685 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
6686 | } |
6687 | ||
95554aad | 6688 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 6689 | pdi->is_dwz, |
95554aad TT |
6690 | cu->objfile); |
6691 | ||
6692 | /* Go read the partial unit, if needed. */ | |
6693 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 6694 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 6695 | |
f4dc4d17 | 6696 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 6697 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
6698 | } |
6699 | break; | |
74921315 KS |
6700 | case DW_TAG_imported_declaration: |
6701 | add_partial_symbol (pdi, cu); | |
6702 | break; | |
c906108c SS |
6703 | default: |
6704 | break; | |
6705 | } | |
6706 | } | |
6707 | ||
72bf9492 DJ |
6708 | /* If the die has a sibling, skip to the sibling. */ |
6709 | ||
6710 | pdi = pdi->die_sibling; | |
6711 | } | |
6712 | } | |
6713 | ||
6714 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 6715 | |
72bf9492 | 6716 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
6717 | name is concatenated with "::" and the partial DIE's name. For |
6718 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
6719 | Enumerators are an exception; they use the scope of their parent |
6720 | enumeration type, i.e. the name of the enumeration type is not | |
6721 | prepended to the enumerator. | |
91c24f0a | 6722 | |
72bf9492 DJ |
6723 | There are two complexities. One is DW_AT_specification; in this |
6724 | case "parent" means the parent of the target of the specification, | |
6725 | instead of the direct parent of the DIE. The other is compilers | |
6726 | which do not emit DW_TAG_namespace; in this case we try to guess | |
6727 | the fully qualified name of structure types from their members' | |
6728 | linkage names. This must be done using the DIE's children rather | |
6729 | than the children of any DW_AT_specification target. We only need | |
6730 | to do this for structures at the top level, i.e. if the target of | |
6731 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
6732 | have a parent. */ | |
6733 | ||
6734 | /* Compute the scope prefix associated with PDI's parent, in | |
6735 | compilation unit CU. The result will be allocated on CU's | |
6736 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
6737 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 6738 | static const char * |
72bf9492 DJ |
6739 | partial_die_parent_scope (struct partial_die_info *pdi, |
6740 | struct dwarf2_cu *cu) | |
6741 | { | |
15d034d0 | 6742 | const char *grandparent_scope; |
72bf9492 | 6743 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 6744 | |
72bf9492 DJ |
6745 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
6746 | then this means the parent of the specification DIE. */ | |
6747 | ||
6748 | real_pdi = pdi; | |
72bf9492 | 6749 | while (real_pdi->has_specification) |
36586728 TT |
6750 | real_pdi = find_partial_die (real_pdi->spec_offset, |
6751 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
6752 | |
6753 | parent = real_pdi->die_parent; | |
6754 | if (parent == NULL) | |
6755 | return NULL; | |
6756 | ||
6757 | if (parent->scope_set) | |
6758 | return parent->scope; | |
6759 | ||
6760 | fixup_partial_die (parent, cu); | |
6761 | ||
10b3939b | 6762 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 6763 | |
acebe513 UW |
6764 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
6765 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
6766 | Work around this problem here. */ | |
6767 | if (cu->language == language_cplus | |
6e70227d | 6768 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
6769 | && strcmp (parent->name, "::") == 0 |
6770 | && grandparent_scope == NULL) | |
6771 | { | |
6772 | parent->scope = NULL; | |
6773 | parent->scope_set = 1; | |
6774 | return NULL; | |
6775 | } | |
6776 | ||
9c6c53f7 SA |
6777 | if (pdi->tag == DW_TAG_enumerator) |
6778 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
6779 | parent->scope = grandparent_scope; | |
6780 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 6781 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
6782 | || parent->tag == DW_TAG_structure_type |
6783 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 6784 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
6785 | || parent->tag == DW_TAG_union_type |
6786 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
6787 | { |
6788 | if (grandparent_scope == NULL) | |
6789 | parent->scope = parent->name; | |
6790 | else | |
3e43a32a MS |
6791 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
6792 | grandparent_scope, | |
f55ee35c | 6793 | parent->name, 0, cu); |
72bf9492 | 6794 | } |
72bf9492 DJ |
6795 | else |
6796 | { | |
6797 | /* FIXME drow/2004-04-01: What should we be doing with | |
6798 | function-local names? For partial symbols, we should probably be | |
6799 | ignoring them. */ | |
6800 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6801 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 6802 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 6803 | parent->scope = grandparent_scope; |
c906108c SS |
6804 | } |
6805 | ||
72bf9492 DJ |
6806 | parent->scope_set = 1; |
6807 | return parent->scope; | |
6808 | } | |
6809 | ||
6810 | /* Return the fully scoped name associated with PDI, from compilation unit | |
6811 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 6812 | |
72bf9492 DJ |
6813 | static char * |
6814 | partial_die_full_name (struct partial_die_info *pdi, | |
6815 | struct dwarf2_cu *cu) | |
6816 | { | |
15d034d0 | 6817 | const char *parent_scope; |
72bf9492 | 6818 | |
98bfdba5 PA |
6819 | /* If this is a template instantiation, we can not work out the |
6820 | template arguments from partial DIEs. So, unfortunately, we have | |
6821 | to go through the full DIEs. At least any work we do building | |
6822 | types here will be reused if full symbols are loaded later. */ | |
6823 | if (pdi->has_template_arguments) | |
6824 | { | |
6825 | fixup_partial_die (pdi, cu); | |
6826 | ||
6827 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
6828 | { | |
6829 | struct die_info *die; | |
6830 | struct attribute attr; | |
6831 | struct dwarf2_cu *ref_cu = cu; | |
6832 | ||
b64f50a1 | 6833 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
6834 | attr.name = 0; |
6835 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 6836 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
6837 | die = follow_die_ref (NULL, &attr, &ref_cu); |
6838 | ||
6839 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
6840 | } | |
6841 | } | |
6842 | ||
72bf9492 DJ |
6843 | parent_scope = partial_die_parent_scope (pdi, cu); |
6844 | if (parent_scope == NULL) | |
6845 | return NULL; | |
6846 | else | |
f55ee35c | 6847 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
6848 | } |
6849 | ||
6850 | static void | |
72bf9492 | 6851 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 6852 | { |
e7c27a73 | 6853 | struct objfile *objfile = cu->objfile; |
3e29f34a | 6854 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 6855 | CORE_ADDR addr = 0; |
15d034d0 | 6856 | const char *actual_name = NULL; |
e142c38c | 6857 | CORE_ADDR baseaddr; |
15d034d0 | 6858 | char *built_actual_name; |
e142c38c DJ |
6859 | |
6860 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6861 | |
15d034d0 TT |
6862 | built_actual_name = partial_die_full_name (pdi, cu); |
6863 | if (built_actual_name != NULL) | |
6864 | actual_name = built_actual_name; | |
63d06c5c | 6865 | |
72bf9492 DJ |
6866 | if (actual_name == NULL) |
6867 | actual_name = pdi->name; | |
6868 | ||
c906108c SS |
6869 | switch (pdi->tag) |
6870 | { | |
6871 | case DW_TAG_subprogram: | |
3e29f34a | 6872 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 6873 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 6874 | { |
2cfa0c8d JB |
6875 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
6876 | of the global scope. But in Ada, we want to be able to access | |
6877 | nested procedures globally. So all Ada subprograms are stored | |
6878 | in the global scope. */ | |
3e29f34a MR |
6879 | /* prim_record_minimal_symbol (actual_name, addr, mst_text, |
6880 | objfile); */ | |
f47fb265 | 6881 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6882 | built_actual_name != NULL, |
f47fb265 MS |
6883 | VAR_DOMAIN, LOC_BLOCK, |
6884 | &objfile->global_psymbols, | |
3e29f34a | 6885 | 0, addr, cu->language, objfile); |
c906108c SS |
6886 | } |
6887 | else | |
6888 | { | |
3e29f34a MR |
6889 | /* prim_record_minimal_symbol (actual_name, addr, mst_file_text, |
6890 | objfile); */ | |
f47fb265 | 6891 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6892 | built_actual_name != NULL, |
f47fb265 MS |
6893 | VAR_DOMAIN, LOC_BLOCK, |
6894 | &objfile->static_psymbols, | |
3e29f34a | 6895 | 0, addr, cu->language, objfile); |
c906108c SS |
6896 | } |
6897 | break; | |
72929c62 JB |
6898 | case DW_TAG_constant: |
6899 | { | |
6900 | struct psymbol_allocation_list *list; | |
6901 | ||
6902 | if (pdi->is_external) | |
6903 | list = &objfile->global_psymbols; | |
6904 | else | |
6905 | list = &objfile->static_psymbols; | |
f47fb265 | 6906 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6907 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
f47fb265 | 6908 | list, 0, 0, cu->language, objfile); |
72929c62 JB |
6909 | } |
6910 | break; | |
c906108c | 6911 | case DW_TAG_variable: |
95554aad TT |
6912 | if (pdi->d.locdesc) |
6913 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 6914 | |
95554aad | 6915 | if (pdi->d.locdesc |
caac4577 JG |
6916 | && addr == 0 |
6917 | && !dwarf2_per_objfile->has_section_at_zero) | |
6918 | { | |
6919 | /* A global or static variable may also have been stripped | |
6920 | out by the linker if unused, in which case its address | |
6921 | will be nullified; do not add such variables into partial | |
6922 | symbol table then. */ | |
6923 | } | |
6924 | else if (pdi->is_external) | |
c906108c SS |
6925 | { |
6926 | /* Global Variable. | |
6927 | Don't enter into the minimal symbol tables as there is | |
6928 | a minimal symbol table entry from the ELF symbols already. | |
6929 | Enter into partial symbol table if it has a location | |
6930 | descriptor or a type. | |
6931 | If the location descriptor is missing, new_symbol will create | |
6932 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
6933 | be determined from the minimal symbol table whenever the variable | |
6934 | is referenced. | |
6935 | The address for the partial symbol table entry is not | |
6936 | used by GDB, but it comes in handy for debugging partial symbol | |
6937 | table building. */ | |
6938 | ||
95554aad | 6939 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 6940 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6941 | built_actual_name != NULL, |
f47fb265 MS |
6942 | VAR_DOMAIN, LOC_STATIC, |
6943 | &objfile->global_psymbols, | |
6944 | 0, addr + baseaddr, | |
6945 | cu->language, objfile); | |
c906108c SS |
6946 | } |
6947 | else | |
6948 | { | |
0963b4bd | 6949 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 6950 | if (pdi->d.locdesc == NULL) |
decbce07 | 6951 | { |
15d034d0 | 6952 | xfree (built_actual_name); |
decbce07 MS |
6953 | return; |
6954 | } | |
f47fb265 | 6955 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 6956 | mst_file_data, objfile); */ |
f47fb265 | 6957 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6958 | built_actual_name != NULL, |
f47fb265 MS |
6959 | VAR_DOMAIN, LOC_STATIC, |
6960 | &objfile->static_psymbols, | |
6961 | 0, addr + baseaddr, | |
6962 | cu->language, objfile); | |
c906108c SS |
6963 | } |
6964 | break; | |
6965 | case DW_TAG_typedef: | |
6966 | case DW_TAG_base_type: | |
a02abb62 | 6967 | case DW_TAG_subrange_type: |
38d518c9 | 6968 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6969 | built_actual_name != NULL, |
176620f1 | 6970 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 6971 | &objfile->static_psymbols, |
e142c38c | 6972 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6973 | break; |
74921315 | 6974 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
6975 | case DW_TAG_namespace: |
6976 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 6977 | built_actual_name != NULL, |
72bf9492 DJ |
6978 | VAR_DOMAIN, LOC_TYPEDEF, |
6979 | &objfile->global_psymbols, | |
6980 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
6981 | break; | |
530e8392 KB |
6982 | case DW_TAG_module: |
6983 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
6984 | built_actual_name != NULL, | |
6985 | MODULE_DOMAIN, LOC_TYPEDEF, | |
6986 | &objfile->global_psymbols, | |
6987 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
6988 | break; | |
c906108c | 6989 | case DW_TAG_class_type: |
680b30c7 | 6990 | case DW_TAG_interface_type: |
c906108c SS |
6991 | case DW_TAG_structure_type: |
6992 | case DW_TAG_union_type: | |
6993 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
6994 | /* Skip external references. The DWARF standard says in the section |
6995 | about "Structure, Union, and Class Type Entries": "An incomplete | |
6996 | structure, union or class type is represented by a structure, | |
6997 | union or class entry that does not have a byte size attribute | |
6998 | and that has a DW_AT_declaration attribute." */ | |
6999 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 7000 | { |
15d034d0 | 7001 | xfree (built_actual_name); |
decbce07 MS |
7002 | return; |
7003 | } | |
fa4028e9 | 7004 | |
63d06c5c DC |
7005 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
7006 | static vs. global. */ | |
38d518c9 | 7007 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7008 | built_actual_name != NULL, |
176620f1 | 7009 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
7010 | (cu->language == language_cplus |
7011 | || cu->language == language_java) | |
63d06c5c DC |
7012 | ? &objfile->global_psymbols |
7013 | : &objfile->static_psymbols, | |
e142c38c | 7014 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 7015 | |
c906108c SS |
7016 | break; |
7017 | case DW_TAG_enumerator: | |
38d518c9 | 7018 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7019 | built_actual_name != NULL, |
176620f1 | 7020 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
7021 | (cu->language == language_cplus |
7022 | || cu->language == language_java) | |
f6fe98ef DJ |
7023 | ? &objfile->global_psymbols |
7024 | : &objfile->static_psymbols, | |
e142c38c | 7025 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
7026 | break; |
7027 | default: | |
7028 | break; | |
7029 | } | |
5c4e30ca | 7030 | |
15d034d0 | 7031 | xfree (built_actual_name); |
c906108c SS |
7032 | } |
7033 | ||
5c4e30ca DC |
7034 | /* Read a partial die corresponding to a namespace; also, add a symbol |
7035 | corresponding to that namespace to the symbol table. NAMESPACE is | |
7036 | the name of the enclosing namespace. */ | |
91c24f0a | 7037 | |
72bf9492 DJ |
7038 | static void |
7039 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 7040 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 7041 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 7042 | { |
72bf9492 | 7043 | /* Add a symbol for the namespace. */ |
e7c27a73 | 7044 | |
72bf9492 | 7045 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
7046 | |
7047 | /* Now scan partial symbols in that namespace. */ | |
7048 | ||
91c24f0a | 7049 | if (pdi->has_children) |
cdc07690 | 7050 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
7051 | } |
7052 | ||
5d7cb8df JK |
7053 | /* Read a partial die corresponding to a Fortran module. */ |
7054 | ||
7055 | static void | |
7056 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 7057 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 7058 | { |
530e8392 KB |
7059 | /* Add a symbol for the namespace. */ |
7060 | ||
7061 | add_partial_symbol (pdi, cu); | |
7062 | ||
f55ee35c | 7063 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
7064 | |
7065 | if (pdi->has_children) | |
cdc07690 | 7066 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
7067 | } |
7068 | ||
bc30ff58 JB |
7069 | /* Read a partial die corresponding to a subprogram and create a partial |
7070 | symbol for that subprogram. When the CU language allows it, this | |
7071 | routine also defines a partial symbol for each nested subprogram | |
cdc07690 | 7072 | that this subprogram contains. If SET_ADDRMAP is true, record the |
428fc5fc YQ |
7073 | covered ranges in the addrmap. Set *LOWPC and *HIGHPC to the lowest |
7074 | and highest PC values found in PDI. | |
6e70227d | 7075 | |
cdc07690 YQ |
7076 | PDI may also be a lexical block, in which case we simply search |
7077 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
7078 | Again, this is only performed when the CU language allows this |
7079 | type of definitions. */ | |
7080 | ||
7081 | static void | |
7082 | add_partial_subprogram (struct partial_die_info *pdi, | |
7083 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 7084 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 JB |
7085 | { |
7086 | if (pdi->tag == DW_TAG_subprogram) | |
7087 | { | |
7088 | if (pdi->has_pc_info) | |
7089 | { | |
7090 | if (pdi->lowpc < *lowpc) | |
7091 | *lowpc = pdi->lowpc; | |
7092 | if (pdi->highpc > *highpc) | |
7093 | *highpc = pdi->highpc; | |
cdc07690 | 7094 | if (set_addrmap) |
5734ee8b | 7095 | { |
5734ee8b | 7096 | struct objfile *objfile = cu->objfile; |
3e29f34a MR |
7097 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
7098 | CORE_ADDR baseaddr; | |
7099 | CORE_ADDR highpc; | |
7100 | CORE_ADDR lowpc; | |
5734ee8b DJ |
7101 | |
7102 | baseaddr = ANOFFSET (objfile->section_offsets, | |
7103 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
7104 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
7105 | pdi->lowpc + baseaddr); | |
7106 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
7107 | pdi->highpc + baseaddr); | |
7108 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 7109 | cu->per_cu->v.psymtab); |
5734ee8b | 7110 | } |
481860b3 GB |
7111 | } |
7112 | ||
7113 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
7114 | { | |
bc30ff58 | 7115 | if (!pdi->is_declaration) |
e8d05480 JB |
7116 | /* Ignore subprogram DIEs that do not have a name, they are |
7117 | illegal. Do not emit a complaint at this point, we will | |
7118 | do so when we convert this psymtab into a symtab. */ | |
7119 | if (pdi->name) | |
7120 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
7121 | } |
7122 | } | |
6e70227d | 7123 | |
bc30ff58 JB |
7124 | if (! pdi->has_children) |
7125 | return; | |
7126 | ||
7127 | if (cu->language == language_ada) | |
7128 | { | |
7129 | pdi = pdi->die_child; | |
7130 | while (pdi != NULL) | |
7131 | { | |
7132 | fixup_partial_die (pdi, cu); | |
7133 | if (pdi->tag == DW_TAG_subprogram | |
7134 | || pdi->tag == DW_TAG_lexical_block) | |
cdc07690 | 7135 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
7136 | pdi = pdi->die_sibling; |
7137 | } | |
7138 | } | |
7139 | } | |
7140 | ||
91c24f0a DC |
7141 | /* Read a partial die corresponding to an enumeration type. */ |
7142 | ||
72bf9492 DJ |
7143 | static void |
7144 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
7145 | struct dwarf2_cu *cu) | |
91c24f0a | 7146 | { |
72bf9492 | 7147 | struct partial_die_info *pdi; |
91c24f0a DC |
7148 | |
7149 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
7150 | add_partial_symbol (enum_pdi, cu); |
7151 | ||
7152 | pdi = enum_pdi->die_child; | |
7153 | while (pdi) | |
91c24f0a | 7154 | { |
72bf9492 | 7155 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 7156 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 7157 | else |
72bf9492 DJ |
7158 | add_partial_symbol (pdi, cu); |
7159 | pdi = pdi->die_sibling; | |
91c24f0a | 7160 | } |
91c24f0a DC |
7161 | } |
7162 | ||
6caca83c CC |
7163 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
7164 | ||
7165 | static unsigned int | |
d521ce57 | 7166 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
7167 | { |
7168 | unsigned int bytes_read; | |
7169 | ||
7170 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7171 | } | |
7172 | ||
4bb7a0a7 DJ |
7173 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
7174 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
7175 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
7176 | the initial number. */ | |
7177 | ||
7178 | static struct abbrev_info * | |
d521ce57 | 7179 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 7180 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
7181 | { |
7182 | bfd *abfd = cu->objfile->obfd; | |
7183 | unsigned int abbrev_number; | |
7184 | struct abbrev_info *abbrev; | |
7185 | ||
7186 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
7187 | ||
7188 | if (abbrev_number == 0) | |
7189 | return NULL; | |
7190 | ||
433df2d4 | 7191 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
7192 | if (!abbrev) |
7193 | { | |
422b9917 DE |
7194 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
7195 | " at offset 0x%x [in module %s]"), | |
7196 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", | |
7197 | cu->header.offset.sect_off, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
7198 | } |
7199 | ||
7200 | return abbrev; | |
7201 | } | |
7202 | ||
93311388 DE |
7203 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7204 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
7205 | DIE. Any children of the skipped DIEs will also be skipped. */ |
7206 | ||
d521ce57 TT |
7207 | static const gdb_byte * |
7208 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 7209 | { |
dee91e82 | 7210 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
7211 | struct abbrev_info *abbrev; |
7212 | unsigned int bytes_read; | |
7213 | ||
7214 | while (1) | |
7215 | { | |
7216 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
7217 | if (abbrev == NULL) | |
7218 | return info_ptr + bytes_read; | |
7219 | else | |
dee91e82 | 7220 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
7221 | } |
7222 | } | |
7223 | ||
93311388 DE |
7224 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7225 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
7226 | abbrev corresponding to that skipped uleb128 should be passed in |
7227 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
7228 | children. */ | |
7229 | ||
d521ce57 TT |
7230 | static const gdb_byte * |
7231 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 7232 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
7233 | { |
7234 | unsigned int bytes_read; | |
7235 | struct attribute attr; | |
dee91e82 DE |
7236 | bfd *abfd = reader->abfd; |
7237 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 7238 | const gdb_byte *buffer = reader->buffer; |
f664829e | 7239 | const gdb_byte *buffer_end = reader->buffer_end; |
d521ce57 | 7240 | const gdb_byte *start_info_ptr = info_ptr; |
4bb7a0a7 DJ |
7241 | unsigned int form, i; |
7242 | ||
7243 | for (i = 0; i < abbrev->num_attrs; i++) | |
7244 | { | |
7245 | /* The only abbrev we care about is DW_AT_sibling. */ | |
7246 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
7247 | { | |
dee91e82 | 7248 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 7249 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
7250 | complaint (&symfile_complaints, |
7251 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 7252 | else |
b9502d3f WN |
7253 | { |
7254 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
7255 | const gdb_byte *sibling_ptr = buffer + off; | |
7256 | ||
7257 | if (sibling_ptr < info_ptr) | |
7258 | complaint (&symfile_complaints, | |
7259 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
7260 | else if (sibling_ptr > reader->buffer_end) |
7261 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
7262 | else |
7263 | return sibling_ptr; | |
7264 | } | |
4bb7a0a7 DJ |
7265 | } |
7266 | ||
7267 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
7268 | form = abbrev->attrs[i].form; | |
7269 | skip_attribute: | |
7270 | switch (form) | |
7271 | { | |
4bb7a0a7 | 7272 | case DW_FORM_ref_addr: |
ae411497 TT |
7273 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
7274 | and later it is offset sized. */ | |
7275 | if (cu->header.version == 2) | |
7276 | info_ptr += cu->header.addr_size; | |
7277 | else | |
7278 | info_ptr += cu->header.offset_size; | |
7279 | break; | |
36586728 TT |
7280 | case DW_FORM_GNU_ref_alt: |
7281 | info_ptr += cu->header.offset_size; | |
7282 | break; | |
ae411497 | 7283 | case DW_FORM_addr: |
4bb7a0a7 DJ |
7284 | info_ptr += cu->header.addr_size; |
7285 | break; | |
7286 | case DW_FORM_data1: | |
7287 | case DW_FORM_ref1: | |
7288 | case DW_FORM_flag: | |
7289 | info_ptr += 1; | |
7290 | break; | |
2dc7f7b3 TT |
7291 | case DW_FORM_flag_present: |
7292 | break; | |
4bb7a0a7 DJ |
7293 | case DW_FORM_data2: |
7294 | case DW_FORM_ref2: | |
7295 | info_ptr += 2; | |
7296 | break; | |
7297 | case DW_FORM_data4: | |
7298 | case DW_FORM_ref4: | |
7299 | info_ptr += 4; | |
7300 | break; | |
7301 | case DW_FORM_data8: | |
7302 | case DW_FORM_ref8: | |
55f1336d | 7303 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
7304 | info_ptr += 8; |
7305 | break; | |
7306 | case DW_FORM_string: | |
9b1c24c8 | 7307 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
7308 | info_ptr += bytes_read; |
7309 | break; | |
2dc7f7b3 | 7310 | case DW_FORM_sec_offset: |
4bb7a0a7 | 7311 | case DW_FORM_strp: |
36586728 | 7312 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
7313 | info_ptr += cu->header.offset_size; |
7314 | break; | |
2dc7f7b3 | 7315 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
7316 | case DW_FORM_block: |
7317 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7318 | info_ptr += bytes_read; | |
7319 | break; | |
7320 | case DW_FORM_block1: | |
7321 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
7322 | break; | |
7323 | case DW_FORM_block2: | |
7324 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
7325 | break; | |
7326 | case DW_FORM_block4: | |
7327 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
7328 | break; | |
7329 | case DW_FORM_sdata: | |
7330 | case DW_FORM_udata: | |
7331 | case DW_FORM_ref_udata: | |
3019eac3 DE |
7332 | case DW_FORM_GNU_addr_index: |
7333 | case DW_FORM_GNU_str_index: | |
d521ce57 | 7334 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
7335 | break; |
7336 | case DW_FORM_indirect: | |
7337 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7338 | info_ptr += bytes_read; | |
7339 | /* We need to continue parsing from here, so just go back to | |
7340 | the top. */ | |
7341 | goto skip_attribute; | |
7342 | ||
7343 | default: | |
3e43a32a MS |
7344 | error (_("Dwarf Error: Cannot handle %s " |
7345 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
7346 | dwarf_form_name (form), |
7347 | bfd_get_filename (abfd)); | |
7348 | } | |
7349 | } | |
7350 | ||
7351 | if (abbrev->has_children) | |
dee91e82 | 7352 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
7353 | else |
7354 | return info_ptr; | |
7355 | } | |
7356 | ||
93311388 | 7357 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 7358 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 7359 | |
d521ce57 | 7360 | static const gdb_byte * |
dee91e82 DE |
7361 | locate_pdi_sibling (const struct die_reader_specs *reader, |
7362 | struct partial_die_info *orig_pdi, | |
d521ce57 | 7363 | const gdb_byte *info_ptr) |
91c24f0a DC |
7364 | { |
7365 | /* Do we know the sibling already? */ | |
72bf9492 | 7366 | |
91c24f0a DC |
7367 | if (orig_pdi->sibling) |
7368 | return orig_pdi->sibling; | |
7369 | ||
7370 | /* Are there any children to deal with? */ | |
7371 | ||
7372 | if (!orig_pdi->has_children) | |
7373 | return info_ptr; | |
7374 | ||
4bb7a0a7 | 7375 | /* Skip the children the long way. */ |
91c24f0a | 7376 | |
dee91e82 | 7377 | return skip_children (reader, info_ptr); |
91c24f0a DC |
7378 | } |
7379 | ||
257e7a09 | 7380 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 7381 | not NULL. */ |
c906108c SS |
7382 | |
7383 | static void | |
257e7a09 YQ |
7384 | dwarf2_read_symtab (struct partial_symtab *self, |
7385 | struct objfile *objfile) | |
c906108c | 7386 | { |
257e7a09 | 7387 | if (self->readin) |
c906108c | 7388 | { |
442e4d9c | 7389 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 7390 | self->filename); |
442e4d9c YQ |
7391 | } |
7392 | else | |
7393 | { | |
7394 | if (info_verbose) | |
c906108c | 7395 | { |
442e4d9c | 7396 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 7397 | self->filename); |
442e4d9c | 7398 | gdb_flush (gdb_stdout); |
c906108c | 7399 | } |
c906108c | 7400 | |
442e4d9c YQ |
7401 | /* Restore our global data. */ |
7402 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10b3939b | 7403 | |
442e4d9c YQ |
7404 | /* If this psymtab is constructed from a debug-only objfile, the |
7405 | has_section_at_zero flag will not necessarily be correct. We | |
7406 | can get the correct value for this flag by looking at the data | |
7407 | associated with the (presumably stripped) associated objfile. */ | |
7408 | if (objfile->separate_debug_objfile_backlink) | |
7409 | { | |
7410 | struct dwarf2_per_objfile *dpo_backlink | |
7411 | = objfile_data (objfile->separate_debug_objfile_backlink, | |
7412 | dwarf2_objfile_data_key); | |
9a619af0 | 7413 | |
442e4d9c YQ |
7414 | dwarf2_per_objfile->has_section_at_zero |
7415 | = dpo_backlink->has_section_at_zero; | |
7416 | } | |
b2ab525c | 7417 | |
442e4d9c | 7418 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 7419 | |
257e7a09 | 7420 | psymtab_to_symtab_1 (self); |
c906108c | 7421 | |
442e4d9c YQ |
7422 | /* Finish up the debug error message. */ |
7423 | if (info_verbose) | |
7424 | printf_filtered (_("done.\n")); | |
c906108c | 7425 | } |
95554aad TT |
7426 | |
7427 | process_cu_includes (); | |
c906108c | 7428 | } |
9cdd5dbd DE |
7429 | \f |
7430 | /* Reading in full CUs. */ | |
c906108c | 7431 | |
10b3939b DJ |
7432 | /* Add PER_CU to the queue. */ |
7433 | ||
7434 | static void | |
95554aad TT |
7435 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7436 | enum language pretend_language) | |
10b3939b DJ |
7437 | { |
7438 | struct dwarf2_queue_item *item; | |
7439 | ||
7440 | per_cu->queued = 1; | |
7441 | item = xmalloc (sizeof (*item)); | |
7442 | item->per_cu = per_cu; | |
95554aad | 7443 | item->pretend_language = pretend_language; |
10b3939b DJ |
7444 | item->next = NULL; |
7445 | ||
7446 | if (dwarf2_queue == NULL) | |
7447 | dwarf2_queue = item; | |
7448 | else | |
7449 | dwarf2_queue_tail->next = item; | |
7450 | ||
7451 | dwarf2_queue_tail = item; | |
7452 | } | |
7453 | ||
89e63ee4 DE |
7454 | /* If PER_CU is not yet queued, add it to the queue. |
7455 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
7456 | dependency. | |
0907af0c | 7457 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
7458 | meaning either PER_CU is already queued or it is already loaded. |
7459 | ||
7460 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
7461 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
7462 | |
7463 | static int | |
89e63ee4 | 7464 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
7465 | struct dwarf2_per_cu_data *per_cu, |
7466 | enum language pretend_language) | |
7467 | { | |
7468 | /* We may arrive here during partial symbol reading, if we need full | |
7469 | DIEs to process an unusual case (e.g. template arguments). Do | |
7470 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
7471 | if (dwarf2_per_objfile->reading_partial_symbols) | |
7472 | { | |
7473 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
7474 | return 1; | |
7475 | return 0; | |
7476 | } | |
7477 | ||
7478 | /* Mark the dependence relation so that we don't flush PER_CU | |
7479 | too early. */ | |
89e63ee4 DE |
7480 | if (dependent_cu != NULL) |
7481 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
7482 | |
7483 | /* If it's already on the queue, we have nothing to do. */ | |
7484 | if (per_cu->queued) | |
7485 | return 0; | |
7486 | ||
7487 | /* If the compilation unit is already loaded, just mark it as | |
7488 | used. */ | |
7489 | if (per_cu->cu != NULL) | |
7490 | { | |
7491 | per_cu->cu->last_used = 0; | |
7492 | return 0; | |
7493 | } | |
7494 | ||
7495 | /* Add it to the queue. */ | |
7496 | queue_comp_unit (per_cu, pretend_language); | |
7497 | ||
7498 | return 1; | |
7499 | } | |
7500 | ||
10b3939b DJ |
7501 | /* Process the queue. */ |
7502 | ||
7503 | static void | |
a0f42c21 | 7504 | process_queue (void) |
10b3939b DJ |
7505 | { |
7506 | struct dwarf2_queue_item *item, *next_item; | |
7507 | ||
45cfd468 DE |
7508 | if (dwarf2_read_debug) |
7509 | { | |
7510 | fprintf_unfiltered (gdb_stdlog, | |
7511 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 7512 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
7513 | } |
7514 | ||
03dd20cc DJ |
7515 | /* The queue starts out with one item, but following a DIE reference |
7516 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
7517 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
7518 | { | |
9291a0cd | 7519 | if (dwarf2_per_objfile->using_index |
43f3e411 | 7520 | ? !item->per_cu->v.quick->compunit_symtab |
9291a0cd | 7521 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) |
f4dc4d17 DE |
7522 | { |
7523 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 7524 | unsigned int debug_print_threshold; |
247f5c4f | 7525 | char buf[100]; |
f4dc4d17 | 7526 | |
247f5c4f | 7527 | if (per_cu->is_debug_types) |
f4dc4d17 | 7528 | { |
247f5c4f DE |
7529 | struct signatured_type *sig_type = |
7530 | (struct signatured_type *) per_cu; | |
7531 | ||
7532 | sprintf (buf, "TU %s at offset 0x%x", | |
73be47f5 DE |
7533 | hex_string (sig_type->signature), |
7534 | per_cu->offset.sect_off); | |
7535 | /* There can be 100s of TUs. | |
7536 | Only print them in verbose mode. */ | |
7537 | debug_print_threshold = 2; | |
f4dc4d17 | 7538 | } |
247f5c4f | 7539 | else |
73be47f5 DE |
7540 | { |
7541 | sprintf (buf, "CU at offset 0x%x", per_cu->offset.sect_off); | |
7542 | debug_print_threshold = 1; | |
7543 | } | |
247f5c4f | 7544 | |
73be47f5 | 7545 | if (dwarf2_read_debug >= debug_print_threshold) |
247f5c4f | 7546 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
7547 | |
7548 | if (per_cu->is_debug_types) | |
7549 | process_full_type_unit (per_cu, item->pretend_language); | |
7550 | else | |
7551 | process_full_comp_unit (per_cu, item->pretend_language); | |
7552 | ||
73be47f5 | 7553 | if (dwarf2_read_debug >= debug_print_threshold) |
247f5c4f | 7554 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 7555 | } |
10b3939b DJ |
7556 | |
7557 | item->per_cu->queued = 0; | |
7558 | next_item = item->next; | |
7559 | xfree (item); | |
7560 | } | |
7561 | ||
7562 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
7563 | |
7564 | if (dwarf2_read_debug) | |
7565 | { | |
7566 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 7567 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 7568 | } |
10b3939b DJ |
7569 | } |
7570 | ||
7571 | /* Free all allocated queue entries. This function only releases anything if | |
7572 | an error was thrown; if the queue was processed then it would have been | |
7573 | freed as we went along. */ | |
7574 | ||
7575 | static void | |
7576 | dwarf2_release_queue (void *dummy) | |
7577 | { | |
7578 | struct dwarf2_queue_item *item, *last; | |
7579 | ||
7580 | item = dwarf2_queue; | |
7581 | while (item) | |
7582 | { | |
7583 | /* Anything still marked queued is likely to be in an | |
7584 | inconsistent state, so discard it. */ | |
7585 | if (item->per_cu->queued) | |
7586 | { | |
7587 | if (item->per_cu->cu != NULL) | |
dee91e82 | 7588 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
7589 | item->per_cu->queued = 0; |
7590 | } | |
7591 | ||
7592 | last = item; | |
7593 | item = item->next; | |
7594 | xfree (last); | |
7595 | } | |
7596 | ||
7597 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
7598 | } | |
7599 | ||
7600 | /* Read in full symbols for PST, and anything it depends on. */ | |
7601 | ||
c906108c | 7602 | static void |
fba45db2 | 7603 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 7604 | { |
10b3939b | 7605 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
7606 | int i; |
7607 | ||
95554aad TT |
7608 | if (pst->readin) |
7609 | return; | |
7610 | ||
aaa75496 | 7611 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
7612 | if (!pst->dependencies[i]->readin |
7613 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
7614 | { |
7615 | /* Inform about additional files that need to be read in. */ | |
7616 | if (info_verbose) | |
7617 | { | |
a3f17187 | 7618 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
7619 | fputs_filtered (" ", gdb_stdout); |
7620 | wrap_here (""); | |
7621 | fputs_filtered ("and ", gdb_stdout); | |
7622 | wrap_here (""); | |
7623 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 7624 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
7625 | gdb_flush (gdb_stdout); |
7626 | } | |
7627 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
7628 | } | |
7629 | ||
e38df1d0 | 7630 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
7631 | |
7632 | if (per_cu == NULL) | |
aaa75496 JB |
7633 | { |
7634 | /* It's an include file, no symbols to read for it. | |
7635 | Everything is in the parent symtab. */ | |
7636 | pst->readin = 1; | |
7637 | return; | |
7638 | } | |
c906108c | 7639 | |
a0f42c21 | 7640 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
7641 | } |
7642 | ||
dee91e82 DE |
7643 | /* Trivial hash function for die_info: the hash value of a DIE |
7644 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 7645 | |
dee91e82 DE |
7646 | static hashval_t |
7647 | die_hash (const void *item) | |
10b3939b | 7648 | { |
dee91e82 | 7649 | const struct die_info *die = item; |
6502dd73 | 7650 | |
dee91e82 DE |
7651 | return die->offset.sect_off; |
7652 | } | |
63d06c5c | 7653 | |
dee91e82 DE |
7654 | /* Trivial comparison function for die_info structures: two DIEs |
7655 | are equal if they have the same offset. */ | |
98bfdba5 | 7656 | |
dee91e82 DE |
7657 | static int |
7658 | die_eq (const void *item_lhs, const void *item_rhs) | |
7659 | { | |
7660 | const struct die_info *die_lhs = item_lhs; | |
7661 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 7662 | |
dee91e82 DE |
7663 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
7664 | } | |
c906108c | 7665 | |
dee91e82 DE |
7666 | /* die_reader_func for load_full_comp_unit. |
7667 | This is identical to read_signatured_type_reader, | |
7668 | but is kept separate for now. */ | |
c906108c | 7669 | |
dee91e82 DE |
7670 | static void |
7671 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7672 | const gdb_byte *info_ptr, |
dee91e82 DE |
7673 | struct die_info *comp_unit_die, |
7674 | int has_children, | |
7675 | void *data) | |
7676 | { | |
7677 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 7678 | enum language *language_ptr = data; |
6caca83c | 7679 | |
dee91e82 DE |
7680 | gdb_assert (cu->die_hash == NULL); |
7681 | cu->die_hash = | |
7682 | htab_create_alloc_ex (cu->header.length / 12, | |
7683 | die_hash, | |
7684 | die_eq, | |
7685 | NULL, | |
7686 | &cu->comp_unit_obstack, | |
7687 | hashtab_obstack_allocate, | |
7688 | dummy_obstack_deallocate); | |
e142c38c | 7689 | |
dee91e82 DE |
7690 | if (has_children) |
7691 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
7692 | &info_ptr, comp_unit_die); | |
7693 | cu->dies = comp_unit_die; | |
7694 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
7695 | |
7696 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 7697 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 7698 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
7699 | or we won't be able to build types correctly. |
7700 | Similarly, if we do not read the producer, we can not apply | |
7701 | producer-specific interpretation. */ | |
95554aad | 7702 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 7703 | } |
10b3939b | 7704 | |
dee91e82 | 7705 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 7706 | |
dee91e82 | 7707 | static void |
95554aad TT |
7708 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
7709 | enum language pretend_language) | |
dee91e82 | 7710 | { |
3019eac3 | 7711 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 7712 | |
f4dc4d17 DE |
7713 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
7714 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
7715 | } |
7716 | ||
3da10d80 KS |
7717 | /* Add a DIE to the delayed physname list. */ |
7718 | ||
7719 | static void | |
7720 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
7721 | const char *name, struct die_info *die, | |
7722 | struct dwarf2_cu *cu) | |
7723 | { | |
7724 | struct delayed_method_info mi; | |
7725 | mi.type = type; | |
7726 | mi.fnfield_index = fnfield_index; | |
7727 | mi.index = index; | |
7728 | mi.name = name; | |
7729 | mi.die = die; | |
7730 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
7731 | } | |
7732 | ||
7733 | /* A cleanup for freeing the delayed method list. */ | |
7734 | ||
7735 | static void | |
7736 | free_delayed_list (void *ptr) | |
7737 | { | |
7738 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
7739 | if (cu->method_list != NULL) | |
7740 | { | |
7741 | VEC_free (delayed_method_info, cu->method_list); | |
7742 | cu->method_list = NULL; | |
7743 | } | |
7744 | } | |
7745 | ||
7746 | /* Compute the physnames of any methods on the CU's method list. | |
7747 | ||
7748 | The computation of method physnames is delayed in order to avoid the | |
7749 | (bad) condition that one of the method's formal parameters is of an as yet | |
7750 | incomplete type. */ | |
7751 | ||
7752 | static void | |
7753 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
7754 | { | |
7755 | int i; | |
7756 | struct delayed_method_info *mi; | |
7757 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
7758 | { | |
1d06ead6 | 7759 | const char *physname; |
3da10d80 KS |
7760 | struct fn_fieldlist *fn_flp |
7761 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 7762 | physname = dwarf2_physname (mi->name, mi->die, cu); |
005e54bb DE |
7763 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi->index) |
7764 | = physname ? physname : ""; | |
3da10d80 KS |
7765 | } |
7766 | } | |
7767 | ||
a766d390 DE |
7768 | /* Go objects should be embedded in a DW_TAG_module DIE, |
7769 | and it's not clear if/how imported objects will appear. | |
7770 | To keep Go support simple until that's worked out, | |
7771 | go back through what we've read and create something usable. | |
7772 | We could do this while processing each DIE, and feels kinda cleaner, | |
7773 | but that way is more invasive. | |
7774 | This is to, for example, allow the user to type "p var" or "b main" | |
7775 | without having to specify the package name, and allow lookups | |
7776 | of module.object to work in contexts that use the expression | |
7777 | parser. */ | |
7778 | ||
7779 | static void | |
7780 | fixup_go_packaging (struct dwarf2_cu *cu) | |
7781 | { | |
7782 | char *package_name = NULL; | |
7783 | struct pending *list; | |
7784 | int i; | |
7785 | ||
7786 | for (list = global_symbols; list != NULL; list = list->next) | |
7787 | { | |
7788 | for (i = 0; i < list->nsyms; ++i) | |
7789 | { | |
7790 | struct symbol *sym = list->symbol[i]; | |
7791 | ||
7792 | if (SYMBOL_LANGUAGE (sym) == language_go | |
7793 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
7794 | { | |
7795 | char *this_package_name = go_symbol_package_name (sym); | |
7796 | ||
7797 | if (this_package_name == NULL) | |
7798 | continue; | |
7799 | if (package_name == NULL) | |
7800 | package_name = this_package_name; | |
7801 | else | |
7802 | { | |
7803 | if (strcmp (package_name, this_package_name) != 0) | |
7804 | complaint (&symfile_complaints, | |
7805 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
7806 | (symbol_symtab (sym) != NULL |
7807 | ? symtab_to_filename_for_display | |
7808 | (symbol_symtab (sym)) | |
4262abfb | 7809 | : objfile_name (cu->objfile)), |
a766d390 DE |
7810 | this_package_name, package_name); |
7811 | xfree (this_package_name); | |
7812 | } | |
7813 | } | |
7814 | } | |
7815 | } | |
7816 | ||
7817 | if (package_name != NULL) | |
7818 | { | |
7819 | struct objfile *objfile = cu->objfile; | |
34a68019 TT |
7820 | const char *saved_package_name |
7821 | = obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
7822 | package_name, | |
7823 | strlen (package_name)); | |
a766d390 | 7824 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, |
86f62fd7 | 7825 | saved_package_name, objfile); |
a766d390 DE |
7826 | struct symbol *sym; |
7827 | ||
7828 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7829 | ||
e623cf5d | 7830 | sym = allocate_symbol (objfile); |
f85f34ed | 7831 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
7832 | SYMBOL_SET_NAMES (sym, saved_package_name, |
7833 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
7834 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
7835 | e.g., "main" finds the "main" module and not C's main(). */ | |
7836 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 7837 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
7838 | SYMBOL_TYPE (sym) = type; |
7839 | ||
7840 | add_symbol_to_list (sym, &global_symbols); | |
7841 | ||
7842 | xfree (package_name); | |
7843 | } | |
7844 | } | |
7845 | ||
95554aad TT |
7846 | /* Return the symtab for PER_CU. This works properly regardless of |
7847 | whether we're using the index or psymtabs. */ | |
7848 | ||
43f3e411 DE |
7849 | static struct compunit_symtab * |
7850 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad TT |
7851 | { |
7852 | return (dwarf2_per_objfile->using_index | |
43f3e411 DE |
7853 | ? per_cu->v.quick->compunit_symtab |
7854 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
7855 | } |
7856 | ||
7857 | /* A helper function for computing the list of all symbol tables | |
7858 | included by PER_CU. */ | |
7859 | ||
7860 | static void | |
43f3e411 | 7861 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 7862 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 7863 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 7864 | struct compunit_symtab *immediate_parent) |
95554aad TT |
7865 | { |
7866 | void **slot; | |
7867 | int ix; | |
43f3e411 | 7868 | struct compunit_symtab *cust; |
95554aad TT |
7869 | struct dwarf2_per_cu_data *iter; |
7870 | ||
7871 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
7872 | if (*slot != NULL) | |
7873 | { | |
7874 | /* This inclusion and its children have been processed. */ | |
7875 | return; | |
7876 | } | |
7877 | ||
7878 | *slot = per_cu; | |
7879 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
7880 | cust = get_compunit_symtab (per_cu); |
7881 | if (cust != NULL) | |
ec94af83 DE |
7882 | { |
7883 | /* If this is a type unit only add its symbol table if we haven't | |
7884 | seen it yet (type unit per_cu's can share symtabs). */ | |
7885 | if (per_cu->is_debug_types) | |
7886 | { | |
43f3e411 | 7887 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
7888 | if (*slot == NULL) |
7889 | { | |
43f3e411 DE |
7890 | *slot = cust; |
7891 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
7892 | if (cust->user == NULL) | |
7893 | cust->user = immediate_parent; | |
ec94af83 DE |
7894 | } |
7895 | } | |
7896 | else | |
f9125b6c | 7897 | { |
43f3e411 DE |
7898 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
7899 | if (cust->user == NULL) | |
7900 | cust->user = immediate_parent; | |
f9125b6c | 7901 | } |
ec94af83 | 7902 | } |
95554aad TT |
7903 | |
7904 | for (ix = 0; | |
796a7ff8 | 7905 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 7906 | ++ix) |
ec94af83 DE |
7907 | { |
7908 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 7909 | all_type_symtabs, iter, cust); |
ec94af83 | 7910 | } |
95554aad TT |
7911 | } |
7912 | ||
43f3e411 | 7913 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
7914 | PER_CU. */ |
7915 | ||
7916 | static void | |
43f3e411 | 7917 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 7918 | { |
f4dc4d17 DE |
7919 | gdb_assert (! per_cu->is_debug_types); |
7920 | ||
796a7ff8 | 7921 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
7922 | { |
7923 | int ix, len; | |
ec94af83 | 7924 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
7925 | struct compunit_symtab *compunit_symtab_iter; |
7926 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 7927 | htab_t all_children, all_type_symtabs; |
43f3e411 | 7928 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
7929 | |
7930 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 7931 | if (cust == NULL) |
95554aad TT |
7932 | return; |
7933 | ||
7934 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
7935 | NULL, xcalloc, xfree); | |
ec94af83 DE |
7936 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
7937 | NULL, xcalloc, xfree); | |
95554aad TT |
7938 | |
7939 | for (ix = 0; | |
796a7ff8 | 7940 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 7941 | ix, per_cu_iter); |
95554aad | 7942 | ++ix) |
ec94af83 DE |
7943 | { |
7944 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 7945 | all_type_symtabs, per_cu_iter, |
43f3e411 | 7946 | cust); |
ec94af83 | 7947 | } |
95554aad | 7948 | |
ec94af83 | 7949 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
7950 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
7951 | cust->includes | |
95554aad TT |
7952 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, |
7953 | (len + 1) * sizeof (struct symtab *)); | |
7954 | for (ix = 0; | |
43f3e411 DE |
7955 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
7956 | compunit_symtab_iter); | |
95554aad | 7957 | ++ix) |
43f3e411 DE |
7958 | cust->includes[ix] = compunit_symtab_iter; |
7959 | cust->includes[len] = NULL; | |
95554aad | 7960 | |
43f3e411 | 7961 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 7962 | htab_delete (all_children); |
ec94af83 | 7963 | htab_delete (all_type_symtabs); |
95554aad TT |
7964 | } |
7965 | } | |
7966 | ||
7967 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
7968 | read. */ | |
7969 | ||
7970 | static void | |
7971 | process_cu_includes (void) | |
7972 | { | |
7973 | int ix; | |
7974 | struct dwarf2_per_cu_data *iter; | |
7975 | ||
7976 | for (ix = 0; | |
7977 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
7978 | ix, iter); | |
7979 | ++ix) | |
f4dc4d17 DE |
7980 | { |
7981 | if (! iter->is_debug_types) | |
43f3e411 | 7982 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 7983 | } |
95554aad TT |
7984 | |
7985 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
7986 | } | |
7987 | ||
9cdd5dbd | 7988 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
7989 | already been loaded into memory. */ |
7990 | ||
7991 | static void | |
95554aad TT |
7992 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7993 | enum language pretend_language) | |
10b3939b | 7994 | { |
10b3939b | 7995 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 7996 | struct objfile *objfile = per_cu->objfile; |
3e29f34a | 7997 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 7998 | CORE_ADDR lowpc, highpc; |
43f3e411 | 7999 | struct compunit_symtab *cust; |
3da10d80 | 8000 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 8001 | CORE_ADDR baseaddr; |
4359dff1 | 8002 | struct block *static_block; |
3e29f34a | 8003 | CORE_ADDR addr; |
10b3939b DJ |
8004 | |
8005 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8006 | ||
10b3939b DJ |
8007 | buildsym_init (); |
8008 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 8009 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
8010 | |
8011 | cu->list_in_scope = &file_symbols; | |
c906108c | 8012 | |
95554aad TT |
8013 | cu->language = pretend_language; |
8014 | cu->language_defn = language_def (cu->language); | |
8015 | ||
c906108c | 8016 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 8017 | process_die (cu->dies, cu); |
c906108c | 8018 | |
a766d390 DE |
8019 | /* For now fudge the Go package. */ |
8020 | if (cu->language == language_go) | |
8021 | fixup_go_packaging (cu); | |
8022 | ||
3da10d80 KS |
8023 | /* Now that we have processed all the DIEs in the CU, all the types |
8024 | should be complete, and it should now be safe to compute all of the | |
8025 | physnames. */ | |
8026 | compute_delayed_physnames (cu); | |
8027 | do_cleanups (delayed_list_cleanup); | |
8028 | ||
fae299cd DC |
8029 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
8030 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
8031 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 8032 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 8033 | |
3e29f34a MR |
8034 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
8035 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
8036 | |
8037 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
8038 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
8039 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
8040 | addrmap to help ensure it has an accurate map of pc values belonging to | |
8041 | this comp unit. */ | |
8042 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
8043 | ||
43f3e411 DE |
8044 | cust = end_symtab_from_static_block (static_block, |
8045 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 8046 | |
43f3e411 | 8047 | if (cust != NULL) |
c906108c | 8048 | { |
df15bd07 | 8049 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 8050 | |
8be455d7 JK |
8051 | /* Set symtab language to language from DW_AT_language. If the |
8052 | compilation is from a C file generated by language preprocessors, do | |
8053 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 DE |
8054 | if (!(cu->language == language_c |
8055 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
8056 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
8be455d7 JK |
8057 | |
8058 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
8059 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
8060 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
8061 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
8062 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
8063 | |
8064 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
8065 | needed, it would be wrong due to missing DW_AT_producer there. | |
8066 | ||
8067 | Still one can confuse GDB by using non-standard GCC compilation | |
8068 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
8069 | */ | |
ab260dad | 8070 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 8071 | cust->locations_valid = 1; |
e0d00bc7 JK |
8072 | |
8073 | if (gcc_4_minor >= 5) | |
43f3e411 | 8074 | cust->epilogue_unwind_valid = 1; |
96408a79 | 8075 | |
43f3e411 | 8076 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 8077 | } |
9291a0cd TT |
8078 | |
8079 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8080 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
8081 | else |
8082 | { | |
8083 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8084 | pst->compunit_symtab = cust; |
9291a0cd TT |
8085 | pst->readin = 1; |
8086 | } | |
c906108c | 8087 | |
95554aad TT |
8088 | /* Push it for inclusion processing later. */ |
8089 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
8090 | ||
c906108c | 8091 | do_cleanups (back_to); |
f4dc4d17 | 8092 | } |
45cfd468 | 8093 | |
f4dc4d17 DE |
8094 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
8095 | already been loaded into memory. */ | |
8096 | ||
8097 | static void | |
8098 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
8099 | enum language pretend_language) | |
8100 | { | |
8101 | struct dwarf2_cu *cu = per_cu->cu; | |
8102 | struct objfile *objfile = per_cu->objfile; | |
43f3e411 | 8103 | struct compunit_symtab *cust; |
f4dc4d17 | 8104 | struct cleanup *back_to, *delayed_list_cleanup; |
0186c6a7 DE |
8105 | struct signatured_type *sig_type; |
8106 | ||
8107 | gdb_assert (per_cu->is_debug_types); | |
8108 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8109 | |
8110 | buildsym_init (); | |
8111 | back_to = make_cleanup (really_free_pendings, NULL); | |
8112 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
8113 | ||
8114 | cu->list_in_scope = &file_symbols; | |
8115 | ||
8116 | cu->language = pretend_language; | |
8117 | cu->language_defn = language_def (cu->language); | |
8118 | ||
8119 | /* The symbol tables are set up in read_type_unit_scope. */ | |
8120 | process_die (cu->dies, cu); | |
8121 | ||
8122 | /* For now fudge the Go package. */ | |
8123 | if (cu->language == language_go) | |
8124 | fixup_go_packaging (cu); | |
8125 | ||
8126 | /* Now that we have processed all the DIEs in the CU, all the types | |
8127 | should be complete, and it should now be safe to compute all of the | |
8128 | physnames. */ | |
8129 | compute_delayed_physnames (cu); | |
8130 | do_cleanups (delayed_list_cleanup); | |
8131 | ||
8132 | /* TUs share symbol tables. | |
8133 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
8134 | of it with end_expandable_symtab. Otherwise, complete the addition of |
8135 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 8136 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 8137 | { |
43f3e411 DE |
8138 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
8139 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 8140 | |
43f3e411 | 8141 | if (cust != NULL) |
f4dc4d17 DE |
8142 | { |
8143 | /* Set symtab language to language from DW_AT_language. If the | |
8144 | compilation is from a C file generated by language preprocessors, | |
8145 | do not set the language if it was already deduced by | |
8146 | start_subfile. */ | |
43f3e411 DE |
8147 | if (!(cu->language == language_c |
8148 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
8149 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
8150 | } |
8151 | } | |
8152 | else | |
8153 | { | |
0ab9ce85 | 8154 | augment_type_symtab (); |
43f3e411 | 8155 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
8156 | } |
8157 | ||
8158 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8159 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
8160 | else |
8161 | { | |
8162 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8163 | pst->compunit_symtab = cust; |
f4dc4d17 | 8164 | pst->readin = 1; |
45cfd468 | 8165 | } |
f4dc4d17 DE |
8166 | |
8167 | do_cleanups (back_to); | |
c906108c SS |
8168 | } |
8169 | ||
95554aad TT |
8170 | /* Process an imported unit DIE. */ |
8171 | ||
8172 | static void | |
8173 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
8174 | { | |
8175 | struct attribute *attr; | |
8176 | ||
f4dc4d17 DE |
8177 | /* For now we don't handle imported units in type units. */ |
8178 | if (cu->per_cu->is_debug_types) | |
8179 | { | |
8180 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8181 | " supported in type units [in module %s]"), | |
4262abfb | 8182 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
8183 | } |
8184 | ||
95554aad TT |
8185 | attr = dwarf2_attr (die, DW_AT_import, cu); |
8186 | if (attr != NULL) | |
8187 | { | |
8188 | struct dwarf2_per_cu_data *per_cu; | |
8189 | struct symtab *imported_symtab; | |
8190 | sect_offset offset; | |
36586728 | 8191 | int is_dwz; |
95554aad TT |
8192 | |
8193 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
8194 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
8195 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad | 8196 | |
69d751e3 | 8197 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
8198 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
8199 | load_full_comp_unit (per_cu, cu->language); | |
8200 | ||
796a7ff8 | 8201 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
8202 | per_cu); |
8203 | } | |
8204 | } | |
8205 | ||
adde2bff DE |
8206 | /* Reset the in_process bit of a die. */ |
8207 | ||
8208 | static void | |
8209 | reset_die_in_process (void *arg) | |
8210 | { | |
8211 | struct die_info *die = arg; | |
8c3cb9fa | 8212 | |
adde2bff DE |
8213 | die->in_process = 0; |
8214 | } | |
8215 | ||
c906108c SS |
8216 | /* Process a die and its children. */ |
8217 | ||
8218 | static void | |
e7c27a73 | 8219 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8220 | { |
adde2bff DE |
8221 | struct cleanup *in_process; |
8222 | ||
8223 | /* We should only be processing those not already in process. */ | |
8224 | gdb_assert (!die->in_process); | |
8225 | ||
8226 | die->in_process = 1; | |
8227 | in_process = make_cleanup (reset_die_in_process,die); | |
8228 | ||
c906108c SS |
8229 | switch (die->tag) |
8230 | { | |
8231 | case DW_TAG_padding: | |
8232 | break; | |
8233 | case DW_TAG_compile_unit: | |
95554aad | 8234 | case DW_TAG_partial_unit: |
e7c27a73 | 8235 | read_file_scope (die, cu); |
c906108c | 8236 | break; |
348e048f DE |
8237 | case DW_TAG_type_unit: |
8238 | read_type_unit_scope (die, cu); | |
8239 | break; | |
c906108c | 8240 | case DW_TAG_subprogram: |
c906108c | 8241 | case DW_TAG_inlined_subroutine: |
edb3359d | 8242 | read_func_scope (die, cu); |
c906108c SS |
8243 | break; |
8244 | case DW_TAG_lexical_block: | |
14898363 L |
8245 | case DW_TAG_try_block: |
8246 | case DW_TAG_catch_block: | |
e7c27a73 | 8247 | read_lexical_block_scope (die, cu); |
c906108c | 8248 | break; |
96408a79 SA |
8249 | case DW_TAG_GNU_call_site: |
8250 | read_call_site_scope (die, cu); | |
8251 | break; | |
c906108c | 8252 | case DW_TAG_class_type: |
680b30c7 | 8253 | case DW_TAG_interface_type: |
c906108c SS |
8254 | case DW_TAG_structure_type: |
8255 | case DW_TAG_union_type: | |
134d01f1 | 8256 | process_structure_scope (die, cu); |
c906108c SS |
8257 | break; |
8258 | case DW_TAG_enumeration_type: | |
134d01f1 | 8259 | process_enumeration_scope (die, cu); |
c906108c | 8260 | break; |
134d01f1 | 8261 | |
f792889a DJ |
8262 | /* These dies have a type, but processing them does not create |
8263 | a symbol or recurse to process the children. Therefore we can | |
8264 | read them on-demand through read_type_die. */ | |
c906108c | 8265 | case DW_TAG_subroutine_type: |
72019c9c | 8266 | case DW_TAG_set_type: |
c906108c | 8267 | case DW_TAG_array_type: |
c906108c | 8268 | case DW_TAG_pointer_type: |
c906108c | 8269 | case DW_TAG_ptr_to_member_type: |
c906108c | 8270 | case DW_TAG_reference_type: |
c906108c | 8271 | case DW_TAG_string_type: |
c906108c | 8272 | break; |
134d01f1 | 8273 | |
c906108c | 8274 | case DW_TAG_base_type: |
a02abb62 | 8275 | case DW_TAG_subrange_type: |
cb249c71 | 8276 | case DW_TAG_typedef: |
134d01f1 DJ |
8277 | /* Add a typedef symbol for the type definition, if it has a |
8278 | DW_AT_name. */ | |
f792889a | 8279 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 8280 | break; |
c906108c | 8281 | case DW_TAG_common_block: |
e7c27a73 | 8282 | read_common_block (die, cu); |
c906108c SS |
8283 | break; |
8284 | case DW_TAG_common_inclusion: | |
8285 | break; | |
d9fa45fe | 8286 | case DW_TAG_namespace: |
4d4ec4e5 | 8287 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 8288 | read_namespace (die, cu); |
d9fa45fe | 8289 | break; |
5d7cb8df | 8290 | case DW_TAG_module: |
4d4ec4e5 | 8291 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
8292 | read_module (die, cu); |
8293 | break; | |
d9fa45fe | 8294 | case DW_TAG_imported_declaration: |
74921315 KS |
8295 | cu->processing_has_namespace_info = 1; |
8296 | if (read_namespace_alias (die, cu)) | |
8297 | break; | |
8298 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 8299 | case DW_TAG_imported_module: |
4d4ec4e5 | 8300 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
8301 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
8302 | || cu->language != language_fortran)) | |
8303 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
8304 | dwarf_tag_name (die->tag)); | |
8305 | read_import_statement (die, cu); | |
d9fa45fe | 8306 | break; |
95554aad TT |
8307 | |
8308 | case DW_TAG_imported_unit: | |
8309 | process_imported_unit_die (die, cu); | |
8310 | break; | |
8311 | ||
c906108c | 8312 | default: |
e7c27a73 | 8313 | new_symbol (die, NULL, cu); |
c906108c SS |
8314 | break; |
8315 | } | |
adde2bff DE |
8316 | |
8317 | do_cleanups (in_process); | |
c906108c | 8318 | } |
ca69b9e6 DE |
8319 | \f |
8320 | /* DWARF name computation. */ | |
c906108c | 8321 | |
94af9270 KS |
8322 | /* A helper function for dwarf2_compute_name which determines whether DIE |
8323 | needs to have the name of the scope prepended to the name listed in the | |
8324 | die. */ | |
8325 | ||
8326 | static int | |
8327 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8328 | { | |
1c809c68 TT |
8329 | struct attribute *attr; |
8330 | ||
94af9270 KS |
8331 | switch (die->tag) |
8332 | { | |
8333 | case DW_TAG_namespace: | |
8334 | case DW_TAG_typedef: | |
8335 | case DW_TAG_class_type: | |
8336 | case DW_TAG_interface_type: | |
8337 | case DW_TAG_structure_type: | |
8338 | case DW_TAG_union_type: | |
8339 | case DW_TAG_enumeration_type: | |
8340 | case DW_TAG_enumerator: | |
8341 | case DW_TAG_subprogram: | |
8342 | case DW_TAG_member: | |
74921315 | 8343 | case DW_TAG_imported_declaration: |
94af9270 KS |
8344 | return 1; |
8345 | ||
8346 | case DW_TAG_variable: | |
c2b0a229 | 8347 | case DW_TAG_constant: |
94af9270 KS |
8348 | /* We only need to prefix "globally" visible variables. These include |
8349 | any variable marked with DW_AT_external or any variable that | |
8350 | lives in a namespace. [Variables in anonymous namespaces | |
8351 | require prefixing, but they are not DW_AT_external.] */ | |
8352 | ||
8353 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
8354 | { | |
8355 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 8356 | |
94af9270 KS |
8357 | return die_needs_namespace (die_specification (die, &spec_cu), |
8358 | spec_cu); | |
8359 | } | |
8360 | ||
1c809c68 | 8361 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
8362 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
8363 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
8364 | return 0; |
8365 | /* A variable in a lexical block of some kind does not need a | |
8366 | namespace, even though in C++ such variables may be external | |
8367 | and have a mangled name. */ | |
8368 | if (die->parent->tag == DW_TAG_lexical_block | |
8369 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
8370 | || die->parent->tag == DW_TAG_catch_block |
8371 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
8372 | return 0; |
8373 | return 1; | |
94af9270 KS |
8374 | |
8375 | default: | |
8376 | return 0; | |
8377 | } | |
8378 | } | |
8379 | ||
98bfdba5 PA |
8380 | /* Retrieve the last character from a mem_file. */ |
8381 | ||
8382 | static void | |
8383 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
8384 | { | |
8385 | char *last_char_p = (char *) object; | |
8386 | ||
8387 | if (length > 0) | |
8388 | *last_char_p = buffer[length - 1]; | |
8389 | } | |
8390 | ||
94af9270 | 8391 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
8392 | compute the physname for the object, which include a method's: |
8393 | - formal parameters (C++/Java), | |
8394 | - receiver type (Go), | |
8395 | - return type (Java). | |
8396 | ||
8397 | The term "physname" is a bit confusing. | |
8398 | For C++, for example, it is the demangled name. | |
8399 | For Go, for example, it's the mangled name. | |
94af9270 | 8400 | |
af6b7be1 JB |
8401 | For Ada, return the DIE's linkage name rather than the fully qualified |
8402 | name. PHYSNAME is ignored.. | |
8403 | ||
94af9270 KS |
8404 | The result is allocated on the objfile_obstack and canonicalized. */ |
8405 | ||
8406 | static const char * | |
15d034d0 TT |
8407 | dwarf2_compute_name (const char *name, |
8408 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
8409 | int physname) |
8410 | { | |
bb5ed363 DE |
8411 | struct objfile *objfile = cu->objfile; |
8412 | ||
94af9270 KS |
8413 | if (name == NULL) |
8414 | name = dwarf2_name (die, cu); | |
8415 | ||
f55ee35c JK |
8416 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
8417 | compute it by typename_concat inside GDB. */ | |
8418 | if (cu->language == language_ada | |
8419 | || (cu->language == language_fortran && physname)) | |
8420 | { | |
8421 | /* For Ada unit, we prefer the linkage name over the name, as | |
8422 | the former contains the exported name, which the user expects | |
8423 | to be able to reference. Ideally, we want the user to be able | |
8424 | to reference this entity using either natural or linkage name, | |
8425 | but we haven't started looking at this enhancement yet. */ | |
8426 | struct attribute *attr; | |
8427 | ||
8428 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8429 | if (attr == NULL) | |
8430 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8431 | if (attr && DW_STRING (attr)) | |
8432 | return DW_STRING (attr); | |
8433 | } | |
8434 | ||
94af9270 KS |
8435 | /* These are the only languages we know how to qualify names in. */ |
8436 | if (name != NULL | |
f55ee35c JK |
8437 | && (cu->language == language_cplus || cu->language == language_java |
8438 | || cu->language == language_fortran)) | |
94af9270 KS |
8439 | { |
8440 | if (die_needs_namespace (die, cu)) | |
8441 | { | |
8442 | long length; | |
0d5cff50 | 8443 | const char *prefix; |
94af9270 | 8444 | struct ui_file *buf; |
34a68019 TT |
8445 | char *intermediate_name; |
8446 | const char *canonical_name = NULL; | |
94af9270 KS |
8447 | |
8448 | prefix = determine_prefix (die, cu); | |
8449 | buf = mem_fileopen (); | |
8450 | if (*prefix != '\0') | |
8451 | { | |
f55ee35c JK |
8452 | char *prefixed_name = typename_concat (NULL, prefix, name, |
8453 | physname, cu); | |
9a619af0 | 8454 | |
94af9270 KS |
8455 | fputs_unfiltered (prefixed_name, buf); |
8456 | xfree (prefixed_name); | |
8457 | } | |
8458 | else | |
62d5b8da | 8459 | fputs_unfiltered (name, buf); |
94af9270 | 8460 | |
98bfdba5 PA |
8461 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
8462 | as children with DW_TAG_template_type_param or | |
8463 | DW_TAG_value_type_param. If the latter, add them to the name | |
8464 | here. If the name already has template parameters, then | |
8465 | skip this step; some versions of GCC emit both, and | |
8466 | it is more efficient to use the pre-computed name. | |
8467 | ||
8468 | Something to keep in mind about this process: it is very | |
8469 | unlikely, or in some cases downright impossible, to produce | |
8470 | something that will match the mangled name of a function. | |
8471 | If the definition of the function has the same debug info, | |
8472 | we should be able to match up with it anyway. But fallbacks | |
8473 | using the minimal symbol, for instance to find a method | |
8474 | implemented in a stripped copy of libstdc++, will not work. | |
8475 | If we do not have debug info for the definition, we will have to | |
8476 | match them up some other way. | |
8477 | ||
8478 | When we do name matching there is a related problem with function | |
8479 | templates; two instantiated function templates are allowed to | |
8480 | differ only by their return types, which we do not add here. */ | |
8481 | ||
8482 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
8483 | { | |
8484 | struct attribute *attr; | |
8485 | struct die_info *child; | |
8486 | int first = 1; | |
8487 | ||
8488 | die->building_fullname = 1; | |
8489 | ||
8490 | for (child = die->child; child != NULL; child = child->sibling) | |
8491 | { | |
8492 | struct type *type; | |
12df843f | 8493 | LONGEST value; |
d521ce57 | 8494 | const gdb_byte *bytes; |
98bfdba5 PA |
8495 | struct dwarf2_locexpr_baton *baton; |
8496 | struct value *v; | |
8497 | ||
8498 | if (child->tag != DW_TAG_template_type_param | |
8499 | && child->tag != DW_TAG_template_value_param) | |
8500 | continue; | |
8501 | ||
8502 | if (first) | |
8503 | { | |
8504 | fputs_unfiltered ("<", buf); | |
8505 | first = 0; | |
8506 | } | |
8507 | else | |
8508 | fputs_unfiltered (", ", buf); | |
8509 | ||
8510 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
8511 | if (attr == NULL) | |
8512 | { | |
8513 | complaint (&symfile_complaints, | |
8514 | _("template parameter missing DW_AT_type")); | |
8515 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
8516 | continue; | |
8517 | } | |
8518 | type = die_type (child, cu); | |
8519 | ||
8520 | if (child->tag == DW_TAG_template_type_param) | |
8521 | { | |
79d43c61 | 8522 | c_print_type (type, "", buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
8523 | continue; |
8524 | } | |
8525 | ||
8526 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
8527 | if (attr == NULL) | |
8528 | { | |
8529 | complaint (&symfile_complaints, | |
3e43a32a MS |
8530 | _("template parameter missing " |
8531 | "DW_AT_const_value")); | |
98bfdba5 PA |
8532 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
8533 | continue; | |
8534 | } | |
8535 | ||
8536 | dwarf2_const_value_attr (attr, type, name, | |
8537 | &cu->comp_unit_obstack, cu, | |
8538 | &value, &bytes, &baton); | |
8539 | ||
8540 | if (TYPE_NOSIGN (type)) | |
8541 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
8542 | changed, this can use value_print instead. */ | |
8543 | c_printchar (value, type, buf); | |
8544 | else | |
8545 | { | |
8546 | struct value_print_options opts; | |
8547 | ||
8548 | if (baton != NULL) | |
8549 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
8550 | baton->data, | |
8551 | baton->size, | |
8552 | baton->per_cu); | |
8553 | else if (bytes != NULL) | |
8554 | { | |
8555 | v = allocate_value (type); | |
8556 | memcpy (value_contents_writeable (v), bytes, | |
8557 | TYPE_LENGTH (type)); | |
8558 | } | |
8559 | else | |
8560 | v = value_from_longest (type, value); | |
8561 | ||
3e43a32a MS |
8562 | /* Specify decimal so that we do not depend on |
8563 | the radix. */ | |
98bfdba5 PA |
8564 | get_formatted_print_options (&opts, 'd'); |
8565 | opts.raw = 1; | |
8566 | value_print (v, buf, &opts); | |
8567 | release_value (v); | |
8568 | value_free (v); | |
8569 | } | |
8570 | } | |
8571 | ||
8572 | die->building_fullname = 0; | |
8573 | ||
8574 | if (!first) | |
8575 | { | |
8576 | /* Close the argument list, with a space if necessary | |
8577 | (nested templates). */ | |
8578 | char last_char = '\0'; | |
8579 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
8580 | if (last_char == '>') | |
8581 | fputs_unfiltered (" >", buf); | |
8582 | else | |
8583 | fputs_unfiltered (">", buf); | |
8584 | } | |
8585 | } | |
8586 | ||
94af9270 KS |
8587 | /* For Java and C++ methods, append formal parameter type |
8588 | information, if PHYSNAME. */ | |
6e70227d | 8589 | |
94af9270 KS |
8590 | if (physname && die->tag == DW_TAG_subprogram |
8591 | && (cu->language == language_cplus | |
8592 | || cu->language == language_java)) | |
8593 | { | |
8594 | struct type *type = read_type_die (die, cu); | |
8595 | ||
79d43c61 TT |
8596 | c_type_print_args (type, buf, 1, cu->language, |
8597 | &type_print_raw_options); | |
94af9270 KS |
8598 | |
8599 | if (cu->language == language_java) | |
8600 | { | |
8601 | /* For java, we must append the return type to method | |
0963b4bd | 8602 | names. */ |
94af9270 KS |
8603 | if (die->tag == DW_TAG_subprogram) |
8604 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
79d43c61 | 8605 | 0, 0, &type_print_raw_options); |
94af9270 KS |
8606 | } |
8607 | else if (cu->language == language_cplus) | |
8608 | { | |
60430eff DJ |
8609 | /* Assume that an artificial first parameter is |
8610 | "this", but do not crash if it is not. RealView | |
8611 | marks unnamed (and thus unused) parameters as | |
8612 | artificial; there is no way to differentiate | |
8613 | the two cases. */ | |
94af9270 KS |
8614 | if (TYPE_NFIELDS (type) > 0 |
8615 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 8616 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
8617 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
8618 | 0)))) | |
94af9270 KS |
8619 | fputs_unfiltered (" const", buf); |
8620 | } | |
8621 | } | |
8622 | ||
34a68019 | 8623 | intermediate_name = ui_file_xstrdup (buf, &length); |
94af9270 KS |
8624 | ui_file_delete (buf); |
8625 | ||
8626 | if (cu->language == language_cplus) | |
34a68019 TT |
8627 | canonical_name |
8628 | = dwarf2_canonicalize_name (intermediate_name, cu, | |
8629 | &objfile->per_bfd->storage_obstack); | |
8630 | ||
8631 | /* If we only computed INTERMEDIATE_NAME, or if | |
8632 | INTERMEDIATE_NAME is already canonical, then we need to | |
8633 | copy it to the appropriate obstack. */ | |
8634 | if (canonical_name == NULL || canonical_name == intermediate_name) | |
8635 | name = obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
8636 | intermediate_name, | |
8637 | strlen (intermediate_name)); | |
8638 | else | |
8639 | name = canonical_name; | |
9a619af0 | 8640 | |
34a68019 | 8641 | xfree (intermediate_name); |
94af9270 KS |
8642 | } |
8643 | } | |
8644 | ||
8645 | return name; | |
8646 | } | |
8647 | ||
0114d602 DJ |
8648 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
8649 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 8650 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
8651 | not have a name. NAME may either be from a previous call to |
8652 | dwarf2_name or NULL. | |
8653 | ||
0963b4bd | 8654 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
8655 | |
8656 | static const char * | |
15d034d0 | 8657 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 8658 | { |
94af9270 KS |
8659 | return dwarf2_compute_name (name, die, cu, 0); |
8660 | } | |
0114d602 | 8661 | |
94af9270 KS |
8662 | /* Construct a physname for the given DIE in CU. NAME may either be |
8663 | from a previous call to dwarf2_name or NULL. The result will be | |
8664 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
8665 | name. | |
0114d602 | 8666 | |
94af9270 | 8667 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 8668 | |
94af9270 | 8669 | static const char * |
15d034d0 | 8670 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 8671 | { |
bb5ed363 | 8672 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
8673 | struct attribute *attr; |
8674 | const char *retval, *mangled = NULL, *canon = NULL; | |
8675 | struct cleanup *back_to; | |
8676 | int need_copy = 1; | |
8677 | ||
8678 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
8679 | on its own. */ | |
8680 | if (!die_needs_namespace (die, cu)) | |
8681 | return dwarf2_compute_name (name, die, cu, 1); | |
8682 | ||
8683 | back_to = make_cleanup (null_cleanup, NULL); | |
8684 | ||
8685 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8686 | if (!attr) | |
8687 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8688 | ||
8689 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
8690 | has computed. */ | |
8691 | if (attr && DW_STRING (attr)) | |
8692 | { | |
8693 | char *demangled; | |
8694 | ||
8695 | mangled = DW_STRING (attr); | |
8696 | ||
8697 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
8698 | type. It is easier for GDB users to search for such functions as | |
8699 | `name(params)' than `long name(params)'. In such case the minimal | |
8700 | symbol names do not match the full symbol names but for template | |
8701 | functions there is never a need to look up their definition from their | |
8702 | declaration so the only disadvantage remains the minimal symbol | |
8703 | variant `long name(params)' does not have the proper inferior type. | |
8704 | */ | |
8705 | ||
a766d390 DE |
8706 | if (cu->language == language_go) |
8707 | { | |
8708 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
8709 | new_symbol_full assumes we return the mangled name. | |
8710 | This just undoes that lie until things are cleaned up. */ | |
8711 | demangled = NULL; | |
8712 | } | |
8713 | else | |
8714 | { | |
8de20a37 TT |
8715 | demangled = gdb_demangle (mangled, |
8716 | (DMGL_PARAMS | DMGL_ANSI | |
8717 | | (cu->language == language_java | |
8718 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
8719 | : DMGL_RET_DROP))); | |
a766d390 | 8720 | } |
900e11f9 JK |
8721 | if (demangled) |
8722 | { | |
8723 | make_cleanup (xfree, demangled); | |
8724 | canon = demangled; | |
8725 | } | |
8726 | else | |
8727 | { | |
8728 | canon = mangled; | |
8729 | need_copy = 0; | |
8730 | } | |
8731 | } | |
8732 | ||
8733 | if (canon == NULL || check_physname) | |
8734 | { | |
8735 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
8736 | ||
8737 | if (canon != NULL && strcmp (physname, canon) != 0) | |
8738 | { | |
8739 | /* It may not mean a bug in GDB. The compiler could also | |
8740 | compute DW_AT_linkage_name incorrectly. But in such case | |
8741 | GDB would need to be bug-to-bug compatible. */ | |
8742 | ||
8743 | complaint (&symfile_complaints, | |
8744 | _("Computed physname <%s> does not match demangled <%s> " | |
8745 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
4262abfb JK |
8746 | physname, canon, mangled, die->offset.sect_off, |
8747 | objfile_name (objfile)); | |
900e11f9 JK |
8748 | |
8749 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
8750 | is available here - over computed PHYSNAME. It is safer | |
8751 | against both buggy GDB and buggy compilers. */ | |
8752 | ||
8753 | retval = canon; | |
8754 | } | |
8755 | else | |
8756 | { | |
8757 | retval = physname; | |
8758 | need_copy = 0; | |
8759 | } | |
8760 | } | |
8761 | else | |
8762 | retval = canon; | |
8763 | ||
8764 | if (need_copy) | |
34a68019 TT |
8765 | retval = obstack_copy0 (&objfile->per_bfd->storage_obstack, |
8766 | retval, strlen (retval)); | |
900e11f9 JK |
8767 | |
8768 | do_cleanups (back_to); | |
8769 | return retval; | |
0114d602 DJ |
8770 | } |
8771 | ||
74921315 KS |
8772 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
8773 | a new symbol for it. | |
8774 | ||
8775 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
8776 | ||
8777 | static int | |
8778 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
8779 | { | |
8780 | struct attribute *attr; | |
8781 | ||
8782 | /* If the die does not have a name, this is not a namespace | |
8783 | alias. */ | |
8784 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8785 | if (attr != NULL) | |
8786 | { | |
8787 | int num; | |
8788 | struct die_info *d = die; | |
8789 | struct dwarf2_cu *imported_cu = cu; | |
8790 | ||
8791 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
8792 | keep inspecting DIEs until we hit the underlying import. */ | |
8793 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
8794 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
8795 | { | |
8796 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
8797 | if (attr == NULL) | |
8798 | break; | |
8799 | ||
8800 | d = follow_die_ref (d, attr, &imported_cu); | |
8801 | if (d->tag != DW_TAG_imported_declaration) | |
8802 | break; | |
8803 | } | |
8804 | ||
8805 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
8806 | { | |
8807 | complaint (&symfile_complaints, | |
8808 | _("DIE at 0x%x has too many recursively imported " | |
8809 | "declarations"), d->offset.sect_off); | |
8810 | return 0; | |
8811 | } | |
8812 | ||
8813 | if (attr != NULL) | |
8814 | { | |
8815 | struct type *type; | |
8816 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
8817 | ||
8818 | type = get_die_type_at_offset (offset, cu->per_cu); | |
8819 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
8820 | { | |
8821 | /* This declaration is a global namespace alias. Add | |
8822 | a symbol for it whose type is the aliased namespace. */ | |
8823 | new_symbol (die, type, cu); | |
8824 | return 1; | |
8825 | } | |
8826 | } | |
8827 | } | |
8828 | ||
8829 | return 0; | |
8830 | } | |
8831 | ||
27aa8d6a SW |
8832 | /* Read the import statement specified by the given die and record it. */ |
8833 | ||
8834 | static void | |
8835 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
8836 | { | |
bb5ed363 | 8837 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 8838 | struct attribute *import_attr; |
32019081 | 8839 | struct die_info *imported_die, *child_die; |
de4affc9 | 8840 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 8841 | const char *imported_name; |
794684b6 | 8842 | const char *imported_name_prefix; |
13387711 SW |
8843 | const char *canonical_name; |
8844 | const char *import_alias; | |
8845 | const char *imported_declaration = NULL; | |
794684b6 | 8846 | const char *import_prefix; |
32019081 JK |
8847 | VEC (const_char_ptr) *excludes = NULL; |
8848 | struct cleanup *cleanups; | |
13387711 | 8849 | |
27aa8d6a SW |
8850 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
8851 | if (import_attr == NULL) | |
8852 | { | |
8853 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8854 | dwarf_tag_name (die->tag)); | |
8855 | return; | |
8856 | } | |
8857 | ||
de4affc9 CC |
8858 | imported_cu = cu; |
8859 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
8860 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
8861 | if (imported_name == NULL) |
8862 | { | |
8863 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
8864 | ||
8865 | The import in the following code: | |
8866 | namespace A | |
8867 | { | |
8868 | typedef int B; | |
8869 | } | |
8870 | ||
8871 | int main () | |
8872 | { | |
8873 | using A::B; | |
8874 | B b; | |
8875 | return b; | |
8876 | } | |
8877 | ||
8878 | ... | |
8879 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
8880 | <52> DW_AT_decl_file : 1 | |
8881 | <53> DW_AT_decl_line : 6 | |
8882 | <54> DW_AT_import : <0x75> | |
8883 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
8884 | <59> DW_AT_name : B | |
8885 | <5b> DW_AT_decl_file : 1 | |
8886 | <5c> DW_AT_decl_line : 2 | |
8887 | <5d> DW_AT_type : <0x6e> | |
8888 | ... | |
8889 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
8890 | <76> DW_AT_byte_size : 4 | |
8891 | <77> DW_AT_encoding : 5 (signed) | |
8892 | ||
8893 | imports the wrong die ( 0x75 instead of 0x58 ). | |
8894 | This case will be ignored until the gcc bug is fixed. */ | |
8895 | return; | |
8896 | } | |
8897 | ||
82856980 SW |
8898 | /* Figure out the local name after import. */ |
8899 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 8900 | |
794684b6 SW |
8901 | /* Figure out where the statement is being imported to. */ |
8902 | import_prefix = determine_prefix (die, cu); | |
8903 | ||
8904 | /* Figure out what the scope of the imported die is and prepend it | |
8905 | to the name of the imported die. */ | |
de4affc9 | 8906 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 8907 | |
f55ee35c JK |
8908 | if (imported_die->tag != DW_TAG_namespace |
8909 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 8910 | { |
13387711 SW |
8911 | imported_declaration = imported_name; |
8912 | canonical_name = imported_name_prefix; | |
794684b6 | 8913 | } |
13387711 | 8914 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 TT |
8915 | canonical_name = obconcat (&objfile->objfile_obstack, |
8916 | imported_name_prefix, "::", imported_name, | |
8917 | (char *) NULL); | |
13387711 SW |
8918 | else |
8919 | canonical_name = imported_name; | |
794684b6 | 8920 | |
32019081 JK |
8921 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
8922 | ||
8923 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
8924 | for (child_die = die->child; child_die && child_die->tag; | |
8925 | child_die = sibling_die (child_die)) | |
8926 | { | |
8927 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
8928 | represented by an imported module entry with an import attribute | |
8929 | referring to the module and owned entries corresponding to those | |
8930 | entities that are renamed as part of being imported. */ | |
8931 | ||
8932 | if (child_die->tag != DW_TAG_imported_declaration) | |
8933 | { | |
8934 | complaint (&symfile_complaints, | |
8935 | _("child DW_TAG_imported_declaration expected " | |
8936 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 8937 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8938 | continue; |
8939 | } | |
8940 | ||
8941 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
8942 | if (import_attr == NULL) | |
8943 | { | |
8944 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8945 | dwarf_tag_name (child_die->tag)); | |
8946 | continue; | |
8947 | } | |
8948 | ||
8949 | imported_cu = cu; | |
8950 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
8951 | &imported_cu); | |
8952 | imported_name = dwarf2_name (imported_die, imported_cu); | |
8953 | if (imported_name == NULL) | |
8954 | { | |
8955 | complaint (&symfile_complaints, | |
8956 | _("child DW_TAG_imported_declaration has unknown " | |
8957 | "imported name - DIE at 0x%x [in module %s]"), | |
4262abfb | 8958 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8959 | continue; |
8960 | } | |
8961 | ||
8962 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
8963 | ||
8964 | process_die (child_die, cu); | |
8965 | } | |
8966 | ||
c0cc3a76 SW |
8967 | cp_add_using_directive (import_prefix, |
8968 | canonical_name, | |
8969 | import_alias, | |
13387711 | 8970 | imported_declaration, |
32019081 | 8971 | excludes, |
12aaed36 | 8972 | 0, |
bb5ed363 | 8973 | &objfile->objfile_obstack); |
32019081 JK |
8974 | |
8975 | do_cleanups (cleanups); | |
27aa8d6a SW |
8976 | } |
8977 | ||
f4dc4d17 | 8978 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 8979 | |
cb1df416 DJ |
8980 | static void |
8981 | free_cu_line_header (void *arg) | |
8982 | { | |
8983 | struct dwarf2_cu *cu = arg; | |
8984 | ||
8985 | free_line_header (cu->line_header); | |
8986 | cu->line_header = NULL; | |
8987 | } | |
8988 | ||
1b80a9fa JK |
8989 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
8990 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
8991 | this, it was first present in GCC release 4.3.0. */ | |
8992 | ||
8993 | static int | |
8994 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
8995 | { | |
8996 | if (!cu->checked_producer) | |
8997 | check_producer (cu); | |
8998 | ||
8999 | return cu->producer_is_gcc_lt_4_3; | |
9000 | } | |
9001 | ||
9291a0cd TT |
9002 | static void |
9003 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 9004 | const char **name, const char **comp_dir) |
9291a0cd TT |
9005 | { |
9006 | struct attribute *attr; | |
9007 | ||
9008 | *name = NULL; | |
9009 | *comp_dir = NULL; | |
9010 | ||
9011 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
9012 | is not a source language identifier. */ | |
9013 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
9014 | if (attr) | |
9015 | { | |
9016 | *name = DW_STRING (attr); | |
9017 | } | |
9018 | ||
9019 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
9020 | if (attr) | |
9021 | *comp_dir = DW_STRING (attr); | |
1b80a9fa JK |
9022 | else if (producer_is_gcc_lt_4_3 (cu) && *name != NULL |
9023 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 9024 | { |
15d034d0 TT |
9025 | char *d = ldirname (*name); |
9026 | ||
9027 | *comp_dir = d; | |
9028 | if (d != NULL) | |
9029 | make_cleanup (xfree, d); | |
9291a0cd TT |
9030 | } |
9031 | if (*comp_dir != NULL) | |
9032 | { | |
9033 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
9034 | directory, get rid of it. */ | |
9035 | char *cp = strchr (*comp_dir, ':'); | |
9036 | ||
9037 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
9038 | *comp_dir = cp + 1; | |
9039 | } | |
9040 | ||
9041 | if (*name == NULL) | |
9042 | *name = "<unknown>"; | |
9043 | } | |
9044 | ||
f4dc4d17 DE |
9045 | /* Handle DW_AT_stmt_list for a compilation unit. |
9046 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
9047 | COMP_DIR is the compilation directory. LOWPC is passed to |
9048 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
9049 | |
9050 | static void | |
9051 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 9052 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 9053 | { |
527f3840 | 9054 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 9055 | struct attribute *attr; |
527f3840 JK |
9056 | unsigned int line_offset; |
9057 | struct line_header line_header_local; | |
9058 | hashval_t line_header_local_hash; | |
9059 | unsigned u; | |
9060 | void **slot; | |
9061 | int decode_mapping; | |
2ab95328 | 9062 | |
f4dc4d17 DE |
9063 | gdb_assert (! cu->per_cu->is_debug_types); |
9064 | ||
2ab95328 | 9065 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
9066 | if (attr == NULL) |
9067 | return; | |
9068 | ||
9069 | line_offset = DW_UNSND (attr); | |
9070 | ||
9071 | /* The line header hash table is only created if needed (it exists to | |
9072 | prevent redundant reading of the line table for partial_units). | |
9073 | If we're given a partial_unit, we'll need it. If we're given a | |
9074 | compile_unit, then use the line header hash table if it's already | |
9075 | created, but don't create one just yet. */ | |
9076 | ||
9077 | if (dwarf2_per_objfile->line_header_hash == NULL | |
9078 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 9079 | { |
527f3840 JK |
9080 | dwarf2_per_objfile->line_header_hash |
9081 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
9082 | line_header_eq_voidp, | |
9083 | free_line_header_voidp, | |
9084 | &objfile->objfile_obstack, | |
9085 | hashtab_obstack_allocate, | |
9086 | dummy_obstack_deallocate); | |
9087 | } | |
2ab95328 | 9088 | |
527f3840 JK |
9089 | line_header_local.offset.sect_off = line_offset; |
9090 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; | |
9091 | line_header_local_hash = line_header_hash (&line_header_local); | |
9092 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
9093 | { | |
9094 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9095 | &line_header_local, | |
9096 | line_header_local_hash, NO_INSERT); | |
9097 | ||
9098 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
9099 | is not present in *SLOT (since if there is something in *SLOT then | |
9100 | it will be for a partial_unit). */ | |
9101 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 9102 | { |
527f3840 JK |
9103 | gdb_assert (*slot != NULL); |
9104 | cu->line_header = *slot; | |
9105 | return; | |
dee91e82 | 9106 | } |
2ab95328 | 9107 | } |
527f3840 JK |
9108 | |
9109 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
9110 | We always have to call also dwarf_decode_lines for it. */ | |
9111 | cu->line_header = dwarf_decode_line_header (line_offset, cu); | |
9112 | if (cu->line_header == NULL) | |
9113 | return; | |
9114 | ||
9115 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
9116 | slot = NULL; | |
9117 | else | |
9118 | { | |
9119 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9120 | &line_header_local, | |
9121 | line_header_local_hash, INSERT); | |
9122 | gdb_assert (slot != NULL); | |
9123 | } | |
9124 | if (slot != NULL && *slot == NULL) | |
9125 | { | |
9126 | /* This newly decoded line number information unit will be owned | |
9127 | by line_header_hash hash table. */ | |
9128 | *slot = cu->line_header; | |
9129 | } | |
9130 | else | |
9131 | { | |
9132 | /* We cannot free any current entry in (*slot) as that struct line_header | |
9133 | may be already used by multiple CUs. Create only temporary decoded | |
9134 | line_header for this CU - it may happen at most once for each line | |
9135 | number information unit. And if we're not using line_header_hash | |
9136 | then this is what we want as well. */ | |
9137 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
9138 | make_cleanup (free_cu_line_header, cu); | |
9139 | } | |
9140 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
9141 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
9142 | decode_mapping); | |
2ab95328 TT |
9143 | } |
9144 | ||
95554aad | 9145 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 9146 | |
c906108c | 9147 | static void |
e7c27a73 | 9148 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9149 | { |
dee91e82 | 9150 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 9151 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
debd256d | 9152 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 9153 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
9154 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
9155 | struct attribute *attr; | |
15d034d0 TT |
9156 | const char *name = NULL; |
9157 | const char *comp_dir = NULL; | |
c906108c SS |
9158 | struct die_info *child_die; |
9159 | bfd *abfd = objfile->obfd; | |
e142c38c | 9160 | CORE_ADDR baseaddr; |
6e70227d | 9161 | |
e142c38c | 9162 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 9163 | |
fae299cd | 9164 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
9165 | |
9166 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
9167 | from finish_block. */ | |
2acceee2 | 9168 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 9169 | lowpc = highpc; |
3e29f34a | 9170 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 9171 | |
9291a0cd | 9172 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 9173 | |
95554aad | 9174 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 9175 | |
f4b8a18d KW |
9176 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
9177 | standardised yet. As a workaround for the language detection we fall | |
9178 | back to the DW_AT_producer string. */ | |
9179 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
9180 | cu->language = language_opencl; | |
9181 | ||
3019eac3 DE |
9182 | /* Similar hack for Go. */ |
9183 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
9184 | set_cu_language (DW_LANG_Go, cu); | |
9185 | ||
f4dc4d17 | 9186 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
9187 | |
9188 | /* Decode line number information if present. We do this before | |
9189 | processing child DIEs, so that the line header table is available | |
9190 | for DW_AT_decl_file. */ | |
c3b7b696 | 9191 | handle_DW_AT_stmt_list (die, cu, comp_dir, lowpc); |
3019eac3 DE |
9192 | |
9193 | /* Process all dies in compilation unit. */ | |
9194 | if (die->child != NULL) | |
9195 | { | |
9196 | child_die = die->child; | |
9197 | while (child_die && child_die->tag) | |
9198 | { | |
9199 | process_die (child_die, cu); | |
9200 | child_die = sibling_die (child_die); | |
9201 | } | |
9202 | } | |
9203 | ||
9204 | /* Decode macro information, if present. Dwarf 2 macro information | |
9205 | refers to information in the line number info statement program | |
9206 | header, so we can only read it if we've read the header | |
9207 | successfully. */ | |
9208 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
9209 | if (attr && cu->line_header) | |
9210 | { | |
9211 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
9212 | complaint (&symfile_complaints, | |
9213 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
9214 | ||
43f3e411 | 9215 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
9216 | } |
9217 | else | |
9218 | { | |
9219 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
9220 | if (attr && cu->line_header) | |
9221 | { | |
9222 | unsigned int macro_offset = DW_UNSND (attr); | |
9223 | ||
43f3e411 | 9224 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
9225 | } |
9226 | } | |
9227 | ||
9228 | do_cleanups (back_to); | |
9229 | } | |
9230 | ||
f4dc4d17 DE |
9231 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
9232 | Create the set of symtabs used by this TU, or if this TU is sharing | |
9233 | symtabs with another TU and the symtabs have already been created | |
9234 | then restore those symtabs in the line header. | |
9235 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
9236 | |
9237 | static void | |
f4dc4d17 | 9238 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 9239 | { |
f4dc4d17 DE |
9240 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9241 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
9242 | struct type_unit_group *tu_group; | |
9243 | int first_time; | |
9244 | struct line_header *lh; | |
3019eac3 | 9245 | struct attribute *attr; |
f4dc4d17 | 9246 | unsigned int i, line_offset; |
0186c6a7 | 9247 | struct signatured_type *sig_type; |
3019eac3 | 9248 | |
f4dc4d17 | 9249 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 9250 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 9251 | |
f4dc4d17 | 9252 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 9253 | |
f4dc4d17 | 9254 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 9255 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
9256 | if (sig_type->type_unit_group == NULL) |
9257 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
9258 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
9259 | |
9260 | /* If we've already processed this stmt_list there's no real need to | |
9261 | do it again, we could fake it and just recreate the part we need | |
9262 | (file name,index -> symtab mapping). If data shows this optimization | |
9263 | is useful we can do it then. */ | |
43f3e411 | 9264 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
9265 | |
9266 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
9267 | debug info. */ | |
9268 | lh = NULL; | |
9269 | if (attr != NULL) | |
3019eac3 | 9270 | { |
f4dc4d17 DE |
9271 | line_offset = DW_UNSND (attr); |
9272 | lh = dwarf_decode_line_header (line_offset, cu); | |
9273 | } | |
9274 | if (lh == NULL) | |
9275 | { | |
9276 | if (first_time) | |
9277 | dwarf2_start_symtab (cu, "", NULL, 0); | |
9278 | else | |
9279 | { | |
9280 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 9281 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 9282 | } |
f4dc4d17 | 9283 | return; |
3019eac3 DE |
9284 | } |
9285 | ||
f4dc4d17 DE |
9286 | cu->line_header = lh; |
9287 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 9288 | |
f4dc4d17 DE |
9289 | if (first_time) |
9290 | { | |
43f3e411 | 9291 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 9292 | |
f4dc4d17 DE |
9293 | tu_group->num_symtabs = lh->num_file_names; |
9294 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 9295 | |
f4dc4d17 DE |
9296 | for (i = 0; i < lh->num_file_names; ++i) |
9297 | { | |
d521ce57 | 9298 | const char *dir = NULL; |
f4dc4d17 | 9299 | struct file_entry *fe = &lh->file_names[i]; |
3019eac3 | 9300 | |
f4dc4d17 DE |
9301 | if (fe->dir_index) |
9302 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4d663531 | 9303 | dwarf2_start_subfile (fe->name, dir); |
3019eac3 | 9304 | |
f4dc4d17 DE |
9305 | if (current_subfile->symtab == NULL) |
9306 | { | |
9307 | /* NOTE: start_subfile will recognize when it's been passed | |
9308 | a file it has already seen. So we can't assume there's a | |
43f3e411 | 9309 | simple mapping from lh->file_names to subfiles, plus |
f4dc4d17 | 9310 | lh->file_names may contain dups. */ |
43f3e411 DE |
9311 | current_subfile->symtab |
9312 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
9313 | } |
9314 | ||
9315 | fe->symtab = current_subfile->symtab; | |
9316 | tu_group->symtabs[i] = fe->symtab; | |
9317 | } | |
9318 | } | |
9319 | else | |
3019eac3 | 9320 | { |
0ab9ce85 | 9321 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 DE |
9322 | |
9323 | for (i = 0; i < lh->num_file_names; ++i) | |
9324 | { | |
9325 | struct file_entry *fe = &lh->file_names[i]; | |
9326 | ||
9327 | fe->symtab = tu_group->symtabs[i]; | |
9328 | } | |
3019eac3 DE |
9329 | } |
9330 | ||
f4dc4d17 DE |
9331 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
9332 | so they don't have a "real" (so to speak) symtab anyway. | |
9333 | There is later code that will assign the main symtab to all symbols | |
9334 | that don't have one. We need to handle the case of a symbol with a | |
9335 | missing symtab (DW_AT_decl_file) anyway. */ | |
9336 | } | |
3019eac3 | 9337 | |
f4dc4d17 DE |
9338 | /* Process DW_TAG_type_unit. |
9339 | For TUs we want to skip the first top level sibling if it's not the | |
9340 | actual type being defined by this TU. In this case the first top | |
9341 | level sibling is there to provide context only. */ | |
3019eac3 | 9342 | |
f4dc4d17 DE |
9343 | static void |
9344 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9345 | { | |
9346 | struct die_info *child_die; | |
3019eac3 | 9347 | |
f4dc4d17 DE |
9348 | prepare_one_comp_unit (cu, die, language_minimal); |
9349 | ||
9350 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
9351 | We do this before processing child DIEs, so that the line header table | |
9352 | is available for DW_AT_decl_file. */ | |
9353 | setup_type_unit_groups (die, cu); | |
9354 | ||
9355 | if (die->child != NULL) | |
9356 | { | |
9357 | child_die = die->child; | |
9358 | while (child_die && child_die->tag) | |
9359 | { | |
9360 | process_die (child_die, cu); | |
9361 | child_die = sibling_die (child_die); | |
9362 | } | |
9363 | } | |
3019eac3 DE |
9364 | } |
9365 | \f | |
80626a55 DE |
9366 | /* DWO/DWP files. |
9367 | ||
9368 | http://gcc.gnu.org/wiki/DebugFission | |
9369 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
9370 | ||
9371 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
9372 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
9373 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
9374 | |
9375 | static hashval_t | |
9376 | hash_dwo_file (const void *item) | |
9377 | { | |
9378 | const struct dwo_file *dwo_file = item; | |
a2ce51a0 | 9379 | hashval_t hash; |
3019eac3 | 9380 | |
a2ce51a0 DE |
9381 | hash = htab_hash_string (dwo_file->dwo_name); |
9382 | if (dwo_file->comp_dir != NULL) | |
9383 | hash += htab_hash_string (dwo_file->comp_dir); | |
9384 | return hash; | |
3019eac3 DE |
9385 | } |
9386 | ||
9387 | static int | |
9388 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
9389 | { | |
9390 | const struct dwo_file *lhs = item_lhs; | |
9391 | const struct dwo_file *rhs = item_rhs; | |
9392 | ||
a2ce51a0 DE |
9393 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
9394 | return 0; | |
9395 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
9396 | return lhs->comp_dir == rhs->comp_dir; | |
9397 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
9398 | } |
9399 | ||
9400 | /* Allocate a hash table for DWO files. */ | |
9401 | ||
9402 | static htab_t | |
9403 | allocate_dwo_file_hash_table (void) | |
9404 | { | |
9405 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9406 | ||
9407 | return htab_create_alloc_ex (41, | |
9408 | hash_dwo_file, | |
9409 | eq_dwo_file, | |
9410 | NULL, | |
9411 | &objfile->objfile_obstack, | |
9412 | hashtab_obstack_allocate, | |
9413 | dummy_obstack_deallocate); | |
9414 | } | |
9415 | ||
80626a55 DE |
9416 | /* Lookup DWO file DWO_NAME. */ |
9417 | ||
9418 | static void ** | |
0ac5b59e | 9419 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
9420 | { |
9421 | struct dwo_file find_entry; | |
9422 | void **slot; | |
9423 | ||
9424 | if (dwarf2_per_objfile->dwo_files == NULL) | |
9425 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
9426 | ||
9427 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
9428 | find_entry.dwo_name = dwo_name; |
9429 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
9430 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
9431 | ||
9432 | return slot; | |
9433 | } | |
9434 | ||
3019eac3 DE |
9435 | static hashval_t |
9436 | hash_dwo_unit (const void *item) | |
9437 | { | |
9438 | const struct dwo_unit *dwo_unit = item; | |
9439 | ||
9440 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
9441 | return dwo_unit->signature; | |
9442 | } | |
9443 | ||
9444 | static int | |
9445 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
9446 | { | |
9447 | const struct dwo_unit *lhs = item_lhs; | |
9448 | const struct dwo_unit *rhs = item_rhs; | |
9449 | ||
9450 | /* The signature is assumed to be unique within the DWO file. | |
9451 | So while object file CU dwo_id's always have the value zero, | |
9452 | that's OK, assuming each object file DWO file has only one CU, | |
9453 | and that's the rule for now. */ | |
9454 | return lhs->signature == rhs->signature; | |
9455 | } | |
9456 | ||
9457 | /* Allocate a hash table for DWO CUs,TUs. | |
9458 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
9459 | ||
9460 | static htab_t | |
9461 | allocate_dwo_unit_table (struct objfile *objfile) | |
9462 | { | |
9463 | /* Start out with a pretty small number. | |
9464 | Generally DWO files contain only one CU and maybe some TUs. */ | |
9465 | return htab_create_alloc_ex (3, | |
9466 | hash_dwo_unit, | |
9467 | eq_dwo_unit, | |
9468 | NULL, | |
9469 | &objfile->objfile_obstack, | |
9470 | hashtab_obstack_allocate, | |
9471 | dummy_obstack_deallocate); | |
9472 | } | |
9473 | ||
80626a55 | 9474 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 9475 | |
19c3d4c9 | 9476 | struct create_dwo_cu_data |
3019eac3 DE |
9477 | { |
9478 | struct dwo_file *dwo_file; | |
19c3d4c9 | 9479 | struct dwo_unit dwo_unit; |
3019eac3 DE |
9480 | }; |
9481 | ||
19c3d4c9 | 9482 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
9483 | |
9484 | static void | |
19c3d4c9 DE |
9485 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
9486 | const gdb_byte *info_ptr, | |
9487 | struct die_info *comp_unit_die, | |
9488 | int has_children, | |
9489 | void *datap) | |
3019eac3 DE |
9490 | { |
9491 | struct dwarf2_cu *cu = reader->cu; | |
9492 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9493 | sect_offset offset = cu->per_cu->offset; | |
8a0459fd | 9494 | struct dwarf2_section_info *section = cu->per_cu->section; |
19c3d4c9 | 9495 | struct create_dwo_cu_data *data = datap; |
3019eac3 | 9496 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 9497 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 9498 | struct attribute *attr; |
3019eac3 DE |
9499 | |
9500 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
9501 | if (attr == NULL) | |
9502 | { | |
19c3d4c9 DE |
9503 | complaint (&symfile_complaints, |
9504 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
9505 | " its dwo_id [in module %s]"), | |
9506 | offset.sect_off, dwo_file->dwo_name); | |
3019eac3 DE |
9507 | return; |
9508 | } | |
9509 | ||
3019eac3 DE |
9510 | dwo_unit->dwo_file = dwo_file; |
9511 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 9512 | dwo_unit->section = section; |
3019eac3 DE |
9513 | dwo_unit->offset = offset; |
9514 | dwo_unit->length = cu->per_cu->length; | |
9515 | ||
09406207 | 9516 | if (dwarf2_read_debug) |
4031ecc5 DE |
9517 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9518 | offset.sect_off, hex_string (dwo_unit->signature)); | |
3019eac3 DE |
9519 | } |
9520 | ||
19c3d4c9 DE |
9521 | /* Create the dwo_unit for the lone CU in DWO_FILE. |
9522 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 | 9523 | |
19c3d4c9 DE |
9524 | static struct dwo_unit * |
9525 | create_dwo_cu (struct dwo_file *dwo_file) | |
3019eac3 DE |
9526 | { |
9527 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9528 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
9529 | bfd *abfd; | |
9530 | htab_t cu_htab; | |
d521ce57 | 9531 | const gdb_byte *info_ptr, *end_ptr; |
19c3d4c9 DE |
9532 | struct create_dwo_cu_data create_dwo_cu_data; |
9533 | struct dwo_unit *dwo_unit; | |
3019eac3 DE |
9534 | |
9535 | dwarf2_read_section (objfile, section); | |
9536 | info_ptr = section->buffer; | |
9537 | ||
9538 | if (info_ptr == NULL) | |
9539 | return NULL; | |
9540 | ||
9541 | /* We can't set abfd until now because the section may be empty or | |
9542 | not present, in which case section->asection will be NULL. */ | |
a32a8923 | 9543 | abfd = get_section_bfd_owner (section); |
3019eac3 | 9544 | |
09406207 | 9545 | if (dwarf2_read_debug) |
19c3d4c9 DE |
9546 | { |
9547 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
a32a8923 DE |
9548 | get_section_name (section), |
9549 | get_section_file_name (section)); | |
19c3d4c9 | 9550 | } |
3019eac3 | 9551 | |
19c3d4c9 DE |
9552 | create_dwo_cu_data.dwo_file = dwo_file; |
9553 | dwo_unit = NULL; | |
3019eac3 DE |
9554 | |
9555 | end_ptr = info_ptr + section->size; | |
9556 | while (info_ptr < end_ptr) | |
9557 | { | |
9558 | struct dwarf2_per_cu_data per_cu; | |
9559 | ||
19c3d4c9 DE |
9560 | memset (&create_dwo_cu_data.dwo_unit, 0, |
9561 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
9562 | memset (&per_cu, 0, sizeof (per_cu)); |
9563 | per_cu.objfile = objfile; | |
9564 | per_cu.is_debug_types = 0; | |
9565 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 9566 | per_cu.section = section; |
3019eac3 | 9567 | |
33e80786 | 9568 | init_cutu_and_read_dies_no_follow (&per_cu, dwo_file, |
19c3d4c9 DE |
9569 | create_dwo_cu_reader, |
9570 | &create_dwo_cu_data); | |
9571 | ||
9572 | if (create_dwo_cu_data.dwo_unit.dwo_file != NULL) | |
9573 | { | |
9574 | /* If we've already found one, complain. We only support one | |
9575 | because having more than one requires hacking the dwo_name of | |
9576 | each to match, which is highly unlikely to happen. */ | |
9577 | if (dwo_unit != NULL) | |
9578 | { | |
9579 | complaint (&symfile_complaints, | |
9580 | _("Multiple CUs in DWO file %s [in module %s]"), | |
4262abfb | 9581 | dwo_file->dwo_name, objfile_name (objfile)); |
19c3d4c9 DE |
9582 | break; |
9583 | } | |
9584 | ||
9585 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9586 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
9587 | } | |
3019eac3 DE |
9588 | |
9589 | info_ptr += per_cu.length; | |
9590 | } | |
9591 | ||
19c3d4c9 | 9592 | return dwo_unit; |
3019eac3 DE |
9593 | } |
9594 | ||
80626a55 DE |
9595 | /* DWP file .debug_{cu,tu}_index section format: |
9596 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
9597 | ||
d2415c6c DE |
9598 | DWP Version 1: |
9599 | ||
80626a55 DE |
9600 | Both index sections have the same format, and serve to map a 64-bit |
9601 | signature to a set of section numbers. Each section begins with a header, | |
9602 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
9603 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
9604 | aligned at 8-byte boundaries in the file. | |
9605 | ||
d2415c6c DE |
9606 | The index section header consists of: |
9607 | ||
9608 | V, 32 bit version number | |
9609 | -, 32 bits unused | |
9610 | N, 32 bit number of compilation units or type units in the index | |
9611 | M, 32 bit number of slots in the hash table | |
80626a55 | 9612 | |
d2415c6c | 9613 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 9614 | |
d2415c6c DE |
9615 | The hash table begins at offset 16 in the section, and consists of an array |
9616 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
9617 | order of the application binary). Unused slots in the hash table are 0. | |
9618 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 9619 | |
d2415c6c DE |
9620 | The parallel table begins immediately after the hash table |
9621 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
9622 | array of 32-bit indexes (using the byte order of the application binary), | |
9623 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
9624 | table contains a 32-bit index into the pool of section numbers. For unused | |
9625 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 9626 | |
73869dc2 DE |
9627 | The pool of section numbers begins immediately following the hash table |
9628 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
9629 | section numbers consists of an array of 32-bit words (using the byte order | |
9630 | of the application binary). Each item in the array is indexed starting | |
9631 | from 0. The hash table entry provides the index of the first section | |
9632 | number in the set. Additional section numbers in the set follow, and the | |
9633 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
9634 | ||
9635 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
9636 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
9637 | be the second entry. Other members of the set may follow in any order. | |
9638 | ||
9639 | --- | |
9640 | ||
9641 | DWP Version 2: | |
9642 | ||
9643 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
9644 | and the entries in the index tables are now offsets into these sections. | |
9645 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
9646 | section. | |
9647 | ||
9648 | Index Section Contents: | |
9649 | Header | |
9650 | Hash Table of Signatures dwp_hash_table.hash_table | |
9651 | Parallel Table of Indices dwp_hash_table.unit_table | |
9652 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
9653 | Table of Section Sizes dwp_hash_table.v2.sizes | |
9654 | ||
9655 | The index section header consists of: | |
9656 | ||
9657 | V, 32 bit version number | |
9658 | L, 32 bit number of columns in the table of section offsets | |
9659 | N, 32 bit number of compilation units or type units in the index | |
9660 | M, 32 bit number of slots in the hash table | |
9661 | ||
9662 | Numbers are recorded using the byte order of the application binary. | |
9663 | ||
9664 | The hash table has the same format as version 1. | |
9665 | The parallel table of indices has the same format as version 1, | |
9666 | except that the entries are origin-1 indices into the table of sections | |
9667 | offsets and the table of section sizes. | |
9668 | ||
9669 | The table of offsets begins immediately following the parallel table | |
9670 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
9671 | a two-dimensional array of 32-bit words (using the byte order of the | |
9672 | application binary), with L columns and N+1 rows, in row-major order. | |
9673 | Each row in the array is indexed starting from 0. The first row provides | |
9674 | a key to the remaining rows: each column in this row provides an identifier | |
9675 | for a debug section, and the offsets in the same column of subsequent rows | |
9676 | refer to that section. The section identifiers are: | |
9677 | ||
9678 | DW_SECT_INFO 1 .debug_info.dwo | |
9679 | DW_SECT_TYPES 2 .debug_types.dwo | |
9680 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
9681 | DW_SECT_LINE 4 .debug_line.dwo | |
9682 | DW_SECT_LOC 5 .debug_loc.dwo | |
9683 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
9684 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
9685 | DW_SECT_MACRO 8 .debug_macro.dwo | |
9686 | ||
9687 | The offsets provided by the CU and TU index sections are the base offsets | |
9688 | for the contributions made by each CU or TU to the corresponding section | |
9689 | in the package file. Each CU and TU header contains an abbrev_offset | |
9690 | field, used to find the abbreviations table for that CU or TU within the | |
9691 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
9692 | be interpreted as relative to the base offset given in the index section. | |
9693 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
9694 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
9695 | and offsets into other debug sections obtained from DWARF attributes should | |
9696 | also be interpreted as relative to the corresponding base offset. | |
9697 | ||
9698 | The table of sizes begins immediately following the table of offsets. | |
9699 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
9700 | with L columns and N rows, in row-major order. Each row in the array is | |
9701 | indexed starting from 1 (row 0 is shared by the two tables). | |
9702 | ||
9703 | --- | |
9704 | ||
9705 | Hash table lookup is handled the same in version 1 and 2: | |
9706 | ||
9707 | We assume that N and M will not exceed 2^32 - 1. | |
9708 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
9709 | ||
d2415c6c DE |
9710 | Given a 64-bit compilation unit signature or a type signature S, an entry |
9711 | in the hash table is located as follows: | |
80626a55 | 9712 | |
d2415c6c DE |
9713 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
9714 | the low-order k bits all set to 1. | |
80626a55 | 9715 | |
d2415c6c | 9716 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 9717 | |
d2415c6c DE |
9718 | 3) If the hash table entry at index H matches the signature, use that |
9719 | entry. If the hash table entry at index H is unused (all zeroes), | |
9720 | terminate the search: the signature is not present in the table. | |
80626a55 | 9721 | |
d2415c6c | 9722 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 9723 | |
d2415c6c | 9724 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 9725 | to stop at an unused slot or find the match. */ |
80626a55 DE |
9726 | |
9727 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
9728 | .debug_{info,types}.dwo in DWP_FILE. | |
9729 | Returns NULL if there isn't one. | |
9730 | Note: This function processes DWP files only, not DWO files. */ | |
9731 | ||
9732 | static struct dwp_hash_table * | |
9733 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
9734 | { | |
9735 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9736 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 9737 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 9738 | struct dwarf2_section_info *index; |
73869dc2 | 9739 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
9740 | struct dwp_hash_table *htab; |
9741 | ||
9742 | if (is_debug_types) | |
9743 | index = &dwp_file->sections.tu_index; | |
9744 | else | |
9745 | index = &dwp_file->sections.cu_index; | |
9746 | ||
9747 | if (dwarf2_section_empty_p (index)) | |
9748 | return NULL; | |
9749 | dwarf2_read_section (objfile, index); | |
9750 | ||
9751 | index_ptr = index->buffer; | |
9752 | index_end = index_ptr + index->size; | |
9753 | ||
9754 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
9755 | index_ptr += 4; |
9756 | if (version == 2) | |
9757 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
9758 | else | |
9759 | nr_columns = 0; | |
9760 | index_ptr += 4; | |
80626a55 DE |
9761 | nr_units = read_4_bytes (dbfd, index_ptr); |
9762 | index_ptr += 4; | |
9763 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
9764 | index_ptr += 4; | |
9765 | ||
73869dc2 | 9766 | if (version != 1 && version != 2) |
80626a55 | 9767 | { |
21aa081e | 9768 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 9769 | " [in module %s]"), |
21aa081e | 9770 | pulongest (version), dwp_file->name); |
80626a55 DE |
9771 | } |
9772 | if (nr_slots != (nr_slots & -nr_slots)) | |
9773 | { | |
21aa081e | 9774 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 9775 | " is not power of 2 [in module %s]"), |
21aa081e | 9776 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
9777 | } |
9778 | ||
9779 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
9780 | htab->version = version; |
9781 | htab->nr_columns = nr_columns; | |
80626a55 DE |
9782 | htab->nr_units = nr_units; |
9783 | htab->nr_slots = nr_slots; | |
9784 | htab->hash_table = index_ptr; | |
9785 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
9786 | |
9787 | /* Exit early if the table is empty. */ | |
9788 | if (nr_slots == 0 || nr_units == 0 | |
9789 | || (version == 2 && nr_columns == 0)) | |
9790 | { | |
9791 | /* All must be zero. */ | |
9792 | if (nr_slots != 0 || nr_units != 0 | |
9793 | || (version == 2 && nr_columns != 0)) | |
9794 | { | |
9795 | complaint (&symfile_complaints, | |
9796 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
9797 | " all zero [in modules %s]"), | |
9798 | dwp_file->name); | |
9799 | } | |
9800 | return htab; | |
9801 | } | |
9802 | ||
9803 | if (version == 1) | |
9804 | { | |
9805 | htab->section_pool.v1.indices = | |
9806 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9807 | /* It's harder to decide whether the section is too small in v1. | |
9808 | V1 is deprecated anyway so we punt. */ | |
9809 | } | |
9810 | else | |
9811 | { | |
9812 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9813 | int *ids = htab->section_pool.v2.section_ids; | |
9814 | /* Reverse map for error checking. */ | |
9815 | int ids_seen[DW_SECT_MAX + 1]; | |
9816 | int i; | |
9817 | ||
9818 | if (nr_columns < 2) | |
9819 | { | |
9820 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
9821 | " in section table [in module %s]"), | |
9822 | dwp_file->name); | |
9823 | } | |
9824 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
9825 | { | |
9826 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
9827 | " in section table [in module %s]"), | |
9828 | dwp_file->name); | |
9829 | } | |
9830 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9831 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9832 | for (i = 0; i < nr_columns; ++i) | |
9833 | { | |
9834 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
9835 | ||
9836 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
9837 | { | |
9838 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
9839 | " in section table [in module %s]"), | |
9840 | id, dwp_file->name); | |
9841 | } | |
9842 | if (ids_seen[id] != -1) | |
9843 | { | |
9844 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
9845 | " id %d in section table [in module %s]"), | |
9846 | id, dwp_file->name); | |
9847 | } | |
9848 | ids_seen[id] = i; | |
9849 | ids[i] = id; | |
9850 | } | |
9851 | /* Must have exactly one info or types section. */ | |
9852 | if (((ids_seen[DW_SECT_INFO] != -1) | |
9853 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
9854 | != 1) | |
9855 | { | |
9856 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
9857 | " DWO info/types section [in module %s]"), | |
9858 | dwp_file->name); | |
9859 | } | |
9860 | /* Must have an abbrev section. */ | |
9861 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
9862 | { | |
9863 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
9864 | " section [in module %s]"), | |
9865 | dwp_file->name); | |
9866 | } | |
9867 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
9868 | htab->section_pool.v2.sizes = | |
9869 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
9870 | * nr_units * nr_columns); | |
9871 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
9872 | * nr_units * nr_columns)) | |
9873 | > index_end) | |
9874 | { | |
9875 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
9876 | " [in module %s]"), | |
9877 | dwp_file->name); | |
9878 | } | |
9879 | } | |
80626a55 DE |
9880 | |
9881 | return htab; | |
9882 | } | |
9883 | ||
9884 | /* Update SECTIONS with the data from SECTP. | |
9885 | ||
9886 | This function is like the other "locate" section routines that are | |
9887 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 9888 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
9889 | |
9890 | The result is non-zero for success, or zero if an error was found. */ | |
9891 | ||
9892 | static int | |
73869dc2 DE |
9893 | locate_v1_virtual_dwo_sections (asection *sectp, |
9894 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
9895 | { |
9896 | const struct dwop_section_names *names = &dwop_section_names; | |
9897 | ||
9898 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
9899 | { | |
9900 | /* There can be only one. */ | |
73869dc2 | 9901 | if (sections->abbrev.s.asection != NULL) |
80626a55 | 9902 | return 0; |
73869dc2 | 9903 | sections->abbrev.s.asection = sectp; |
80626a55 DE |
9904 | sections->abbrev.size = bfd_get_section_size (sectp); |
9905 | } | |
9906 | else if (section_is_p (sectp->name, &names->info_dwo) | |
9907 | || section_is_p (sectp->name, &names->types_dwo)) | |
9908 | { | |
9909 | /* There can be only one. */ | |
73869dc2 | 9910 | if (sections->info_or_types.s.asection != NULL) |
80626a55 | 9911 | return 0; |
73869dc2 | 9912 | sections->info_or_types.s.asection = sectp; |
80626a55 DE |
9913 | sections->info_or_types.size = bfd_get_section_size (sectp); |
9914 | } | |
9915 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
9916 | { | |
9917 | /* There can be only one. */ | |
73869dc2 | 9918 | if (sections->line.s.asection != NULL) |
80626a55 | 9919 | return 0; |
73869dc2 | 9920 | sections->line.s.asection = sectp; |
80626a55 DE |
9921 | sections->line.size = bfd_get_section_size (sectp); |
9922 | } | |
9923 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
9924 | { | |
9925 | /* There can be only one. */ | |
73869dc2 | 9926 | if (sections->loc.s.asection != NULL) |
80626a55 | 9927 | return 0; |
73869dc2 | 9928 | sections->loc.s.asection = sectp; |
80626a55 DE |
9929 | sections->loc.size = bfd_get_section_size (sectp); |
9930 | } | |
9931 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
9932 | { | |
9933 | /* There can be only one. */ | |
73869dc2 | 9934 | if (sections->macinfo.s.asection != NULL) |
80626a55 | 9935 | return 0; |
73869dc2 | 9936 | sections->macinfo.s.asection = sectp; |
80626a55 DE |
9937 | sections->macinfo.size = bfd_get_section_size (sectp); |
9938 | } | |
9939 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
9940 | { | |
9941 | /* There can be only one. */ | |
73869dc2 | 9942 | if (sections->macro.s.asection != NULL) |
80626a55 | 9943 | return 0; |
73869dc2 | 9944 | sections->macro.s.asection = sectp; |
80626a55 DE |
9945 | sections->macro.size = bfd_get_section_size (sectp); |
9946 | } | |
9947 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
9948 | { | |
9949 | /* There can be only one. */ | |
73869dc2 | 9950 | if (sections->str_offsets.s.asection != NULL) |
80626a55 | 9951 | return 0; |
73869dc2 | 9952 | sections->str_offsets.s.asection = sectp; |
80626a55 DE |
9953 | sections->str_offsets.size = bfd_get_section_size (sectp); |
9954 | } | |
9955 | else | |
9956 | { | |
9957 | /* No other kind of section is valid. */ | |
9958 | return 0; | |
9959 | } | |
9960 | ||
9961 | return 1; | |
9962 | } | |
9963 | ||
73869dc2 DE |
9964 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
9965 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9966 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9967 | This is for DWP version 1 files. */ | |
80626a55 DE |
9968 | |
9969 | static struct dwo_unit * | |
73869dc2 DE |
9970 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
9971 | uint32_t unit_index, | |
9972 | const char *comp_dir, | |
9973 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
9974 | { |
9975 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
9976 | const struct dwp_hash_table *dwp_htab = |
9977 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
9978 | bfd *dbfd = dwp_file->dbfd; |
9979 | const char *kind = is_debug_types ? "TU" : "CU"; | |
9980 | struct dwo_file *dwo_file; | |
9981 | struct dwo_unit *dwo_unit; | |
73869dc2 | 9982 | struct virtual_v1_dwo_sections sections; |
80626a55 DE |
9983 | void **dwo_file_slot; |
9984 | char *virtual_dwo_name; | |
9985 | struct dwarf2_section_info *cutu; | |
9986 | struct cleanup *cleanups; | |
9987 | int i; | |
9988 | ||
73869dc2 DE |
9989 | gdb_assert (dwp_file->version == 1); |
9990 | ||
80626a55 DE |
9991 | if (dwarf2_read_debug) |
9992 | { | |
73869dc2 | 9993 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 9994 | kind, |
73869dc2 | 9995 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
9996 | dwp_file->name); |
9997 | } | |
9998 | ||
19ac8c2e | 9999 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
10000 | Put a limit on the number of sections we look for so that bad data |
10001 | doesn't cause us to loop forever. */ | |
10002 | ||
73869dc2 | 10003 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
10004 | (1 /* .debug_info or .debug_types */ \ |
10005 | + 1 /* .debug_abbrev */ \ | |
10006 | + 1 /* .debug_line */ \ | |
10007 | + 1 /* .debug_loc */ \ | |
10008 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 10009 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
10010 | + 1 /* trailing zero */) |
10011 | ||
10012 | memset (§ions, 0, sizeof (sections)); | |
10013 | cleanups = make_cleanup (null_cleanup, 0); | |
10014 | ||
73869dc2 | 10015 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
10016 | { |
10017 | asection *sectp; | |
10018 | uint32_t section_nr = | |
10019 | read_4_bytes (dbfd, | |
73869dc2 DE |
10020 | dwp_htab->section_pool.v1.indices |
10021 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
10022 | |
10023 | if (section_nr == 0) | |
10024 | break; | |
10025 | if (section_nr >= dwp_file->num_sections) | |
10026 | { | |
10027 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
10028 | " [in module %s]"), | |
10029 | dwp_file->name); | |
10030 | } | |
10031 | ||
10032 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 10033 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
10034 | { |
10035 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
10036 | " [in module %s]"), | |
10037 | dwp_file->name); | |
10038 | } | |
10039 | } | |
10040 | ||
10041 | if (i < 2 | |
a32a8923 DE |
10042 | || dwarf2_section_empty_p (§ions.info_or_types) |
10043 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
10044 | { |
10045 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
10046 | " [in module %s]"), | |
10047 | dwp_file->name); | |
10048 | } | |
73869dc2 | 10049 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
10050 | { |
10051 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
10052 | " [in module %s]"), | |
10053 | dwp_file->name); | |
10054 | } | |
10055 | ||
10056 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10057 | have dwo_unit "live" in that. At least for now. | |
10058 | ||
10059 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 10060 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
10061 | file, we can combine them back into a virtual DWO file to save space |
10062 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
10063 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
10064 | ||
2792b94d PM |
10065 | virtual_dwo_name = |
10066 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
a32a8923 DE |
10067 | get_section_id (§ions.abbrev), |
10068 | get_section_id (§ions.line), | |
10069 | get_section_id (§ions.loc), | |
10070 | get_section_id (§ions.str_offsets)); | |
80626a55 DE |
10071 | make_cleanup (xfree, virtual_dwo_name); |
10072 | /* Can we use an existing virtual DWO file? */ | |
0ac5b59e | 10073 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); |
80626a55 DE |
10074 | /* Create one if necessary. */ |
10075 | if (*dwo_file_slot == NULL) | |
10076 | { | |
10077 | if (dwarf2_read_debug) | |
10078 | { | |
10079 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10080 | virtual_dwo_name); | |
10081 | } | |
10082 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10083 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, |
10084 | virtual_dwo_name, | |
10085 | strlen (virtual_dwo_name)); | |
10086 | dwo_file->comp_dir = comp_dir; | |
80626a55 DE |
10087 | dwo_file->sections.abbrev = sections.abbrev; |
10088 | dwo_file->sections.line = sections.line; | |
10089 | dwo_file->sections.loc = sections.loc; | |
10090 | dwo_file->sections.macinfo = sections.macinfo; | |
10091 | dwo_file->sections.macro = sections.macro; | |
10092 | dwo_file->sections.str_offsets = sections.str_offsets; | |
10093 | /* The "str" section is global to the entire DWP file. */ | |
10094 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 10095 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
10096 | there's no need to record it in dwo_file. |
10097 | Also, we can't simply record type sections in dwo_file because | |
10098 | we record a pointer into the vector in dwo_unit. As we collect more | |
10099 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
10100 | for it, invalidating all copies of pointers into the previous |
10101 | contents. */ | |
80626a55 DE |
10102 | *dwo_file_slot = dwo_file; |
10103 | } | |
10104 | else | |
10105 | { | |
10106 | if (dwarf2_read_debug) | |
10107 | { | |
10108 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10109 | virtual_dwo_name); | |
10110 | } | |
10111 | dwo_file = *dwo_file_slot; | |
10112 | } | |
10113 | do_cleanups (cleanups); | |
10114 | ||
10115 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10116 | dwo_unit->dwo_file = dwo_file; | |
10117 | dwo_unit->signature = signature; | |
8a0459fd DE |
10118 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, |
10119 | sizeof (struct dwarf2_section_info)); | |
10120 | *dwo_unit->section = sections.info_or_types; | |
57d63ce2 | 10121 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
10122 | |
10123 | return dwo_unit; | |
10124 | } | |
10125 | ||
73869dc2 DE |
10126 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
10127 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
10128 | piece within that section used by a TU/CU, return a virtual section | |
10129 | of just that piece. */ | |
10130 | ||
10131 | static struct dwarf2_section_info | |
10132 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
10133 | bfd_size_type offset, bfd_size_type size) | |
10134 | { | |
10135 | struct dwarf2_section_info result; | |
10136 | asection *sectp; | |
10137 | ||
10138 | gdb_assert (section != NULL); | |
10139 | gdb_assert (!section->is_virtual); | |
10140 | ||
10141 | memset (&result, 0, sizeof (result)); | |
10142 | result.s.containing_section = section; | |
10143 | result.is_virtual = 1; | |
10144 | ||
10145 | if (size == 0) | |
10146 | return result; | |
10147 | ||
10148 | sectp = get_section_bfd_section (section); | |
10149 | ||
10150 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
10151 | bounds of the real section. This is a pretty-rare event, so just | |
10152 | flag an error (easier) instead of a warning and trying to cope. */ | |
10153 | if (sectp == NULL | |
10154 | || offset + size > bfd_get_section_size (sectp)) | |
10155 | { | |
10156 | bfd *abfd = sectp->owner; | |
10157 | ||
10158 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" | |
10159 | " in section %s [in module %s]"), | |
10160 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
10161 | objfile_name (dwarf2_per_objfile->objfile)); | |
10162 | } | |
10163 | ||
10164 | result.virtual_offset = offset; | |
10165 | result.size = size; | |
10166 | return result; | |
10167 | } | |
10168 | ||
10169 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
10170 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
10171 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
10172 | This is for DWP version 2 files. */ | |
10173 | ||
10174 | static struct dwo_unit * | |
10175 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
10176 | uint32_t unit_index, | |
10177 | const char *comp_dir, | |
10178 | ULONGEST signature, int is_debug_types) | |
10179 | { | |
10180 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10181 | const struct dwp_hash_table *dwp_htab = | |
10182 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10183 | bfd *dbfd = dwp_file->dbfd; | |
10184 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10185 | struct dwo_file *dwo_file; | |
10186 | struct dwo_unit *dwo_unit; | |
10187 | struct virtual_v2_dwo_sections sections; | |
10188 | void **dwo_file_slot; | |
10189 | char *virtual_dwo_name; | |
10190 | struct dwarf2_section_info *cutu; | |
10191 | struct cleanup *cleanups; | |
10192 | int i; | |
10193 | ||
10194 | gdb_assert (dwp_file->version == 2); | |
10195 | ||
10196 | if (dwarf2_read_debug) | |
10197 | { | |
10198 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
10199 | kind, | |
10200 | pulongest (unit_index), hex_string (signature), | |
10201 | dwp_file->name); | |
10202 | } | |
10203 | ||
10204 | /* Fetch the section offsets of this DWO unit. */ | |
10205 | ||
10206 | memset (§ions, 0, sizeof (sections)); | |
10207 | cleanups = make_cleanup (null_cleanup, 0); | |
10208 | ||
10209 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
10210 | { | |
10211 | uint32_t offset = read_4_bytes (dbfd, | |
10212 | dwp_htab->section_pool.v2.offsets | |
10213 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10214 | + i) | |
10215 | * sizeof (uint32_t))); | |
10216 | uint32_t size = read_4_bytes (dbfd, | |
10217 | dwp_htab->section_pool.v2.sizes | |
10218 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10219 | + i) | |
10220 | * sizeof (uint32_t))); | |
10221 | ||
10222 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
10223 | { | |
10224 | case DW_SECT_INFO: | |
10225 | case DW_SECT_TYPES: | |
10226 | sections.info_or_types_offset = offset; | |
10227 | sections.info_or_types_size = size; | |
10228 | break; | |
10229 | case DW_SECT_ABBREV: | |
10230 | sections.abbrev_offset = offset; | |
10231 | sections.abbrev_size = size; | |
10232 | break; | |
10233 | case DW_SECT_LINE: | |
10234 | sections.line_offset = offset; | |
10235 | sections.line_size = size; | |
10236 | break; | |
10237 | case DW_SECT_LOC: | |
10238 | sections.loc_offset = offset; | |
10239 | sections.loc_size = size; | |
10240 | break; | |
10241 | case DW_SECT_STR_OFFSETS: | |
10242 | sections.str_offsets_offset = offset; | |
10243 | sections.str_offsets_size = size; | |
10244 | break; | |
10245 | case DW_SECT_MACINFO: | |
10246 | sections.macinfo_offset = offset; | |
10247 | sections.macinfo_size = size; | |
10248 | break; | |
10249 | case DW_SECT_MACRO: | |
10250 | sections.macro_offset = offset; | |
10251 | sections.macro_size = size; | |
10252 | break; | |
10253 | } | |
10254 | } | |
10255 | ||
10256 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10257 | have dwo_unit "live" in that. At least for now. | |
10258 | ||
10259 | The DWP file can be made up of a random collection of CUs and TUs. | |
10260 | However, for each CU + set of TUs that came from the same original DWO | |
10261 | file, we can combine them back into a virtual DWO file to save space | |
10262 | (fewer struct dwo_file objects to allocate). Remember that for really | |
10263 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
10264 | ||
10265 | virtual_dwo_name = | |
10266 | xstrprintf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
10267 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
10268 | (long) (sections.line_size ? sections.line_offset : 0), | |
10269 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
10270 | (long) (sections.str_offsets_size | |
10271 | ? sections.str_offsets_offset : 0)); | |
10272 | make_cleanup (xfree, virtual_dwo_name); | |
10273 | /* Can we use an existing virtual DWO file? */ | |
10274 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); | |
10275 | /* Create one if necessary. */ | |
10276 | if (*dwo_file_slot == NULL) | |
10277 | { | |
10278 | if (dwarf2_read_debug) | |
10279 | { | |
10280 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10281 | virtual_dwo_name); | |
10282 | } | |
10283 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
10284 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, | |
10285 | virtual_dwo_name, | |
10286 | strlen (virtual_dwo_name)); | |
10287 | dwo_file->comp_dir = comp_dir; | |
10288 | dwo_file->sections.abbrev = | |
10289 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
10290 | sections.abbrev_offset, sections.abbrev_size); | |
10291 | dwo_file->sections.line = | |
10292 | create_dwp_v2_section (&dwp_file->sections.line, | |
10293 | sections.line_offset, sections.line_size); | |
10294 | dwo_file->sections.loc = | |
10295 | create_dwp_v2_section (&dwp_file->sections.loc, | |
10296 | sections.loc_offset, sections.loc_size); | |
10297 | dwo_file->sections.macinfo = | |
10298 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
10299 | sections.macinfo_offset, sections.macinfo_size); | |
10300 | dwo_file->sections.macro = | |
10301 | create_dwp_v2_section (&dwp_file->sections.macro, | |
10302 | sections.macro_offset, sections.macro_size); | |
10303 | dwo_file->sections.str_offsets = | |
10304 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
10305 | sections.str_offsets_offset, | |
10306 | sections.str_offsets_size); | |
10307 | /* The "str" section is global to the entire DWP file. */ | |
10308 | dwo_file->sections.str = dwp_file->sections.str; | |
10309 | /* The info or types section is assigned below to dwo_unit, | |
10310 | there's no need to record it in dwo_file. | |
10311 | Also, we can't simply record type sections in dwo_file because | |
10312 | we record a pointer into the vector in dwo_unit. As we collect more | |
10313 | types we'll grow the vector and eventually have to reallocate space | |
10314 | for it, invalidating all copies of pointers into the previous | |
10315 | contents. */ | |
10316 | *dwo_file_slot = dwo_file; | |
10317 | } | |
10318 | else | |
10319 | { | |
10320 | if (dwarf2_read_debug) | |
10321 | { | |
10322 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10323 | virtual_dwo_name); | |
10324 | } | |
10325 | dwo_file = *dwo_file_slot; | |
10326 | } | |
10327 | do_cleanups (cleanups); | |
10328 | ||
10329 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10330 | dwo_unit->dwo_file = dwo_file; | |
10331 | dwo_unit->signature = signature; | |
10332 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, | |
10333 | sizeof (struct dwarf2_section_info)); | |
10334 | *dwo_unit->section = create_dwp_v2_section (is_debug_types | |
10335 | ? &dwp_file->sections.types | |
10336 | : &dwp_file->sections.info, | |
10337 | sections.info_or_types_offset, | |
10338 | sections.info_or_types_size); | |
10339 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
10340 | ||
10341 | return dwo_unit; | |
10342 | } | |
10343 | ||
57d63ce2 DE |
10344 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
10345 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
10346 | |
10347 | static struct dwo_unit * | |
57d63ce2 DE |
10348 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
10349 | ULONGEST signature, int is_debug_types) | |
80626a55 | 10350 | { |
57d63ce2 DE |
10351 | const struct dwp_hash_table *dwp_htab = |
10352 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 10353 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 10354 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
10355 | uint32_t hash = signature & mask; |
10356 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
10357 | unsigned int i; | |
10358 | void **slot; | |
10359 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
10360 | ||
10361 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
10362 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
10363 | slot = htab_find_slot (is_debug_types |
10364 | ? dwp_file->loaded_tus | |
10365 | : dwp_file->loaded_cus, | |
10366 | &find_dwo_cu, INSERT); | |
80626a55 DE |
10367 | |
10368 | if (*slot != NULL) | |
10369 | return *slot; | |
10370 | ||
10371 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 10372 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
10373 | { |
10374 | ULONGEST signature_in_table; | |
10375 | ||
10376 | signature_in_table = | |
57d63ce2 | 10377 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
10378 | if (signature_in_table == signature) |
10379 | { | |
57d63ce2 DE |
10380 | uint32_t unit_index = |
10381 | read_4_bytes (dbfd, | |
10382 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 10383 | |
73869dc2 DE |
10384 | if (dwp_file->version == 1) |
10385 | { | |
10386 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
10387 | comp_dir, signature, | |
10388 | is_debug_types); | |
10389 | } | |
10390 | else | |
10391 | { | |
10392 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
10393 | comp_dir, signature, | |
10394 | is_debug_types); | |
10395 | } | |
80626a55 DE |
10396 | return *slot; |
10397 | } | |
10398 | if (signature_in_table == 0) | |
10399 | return NULL; | |
10400 | hash = (hash + hash2) & mask; | |
10401 | } | |
10402 | ||
10403 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
10404 | " [in module %s]"), | |
10405 | dwp_file->name); | |
10406 | } | |
10407 | ||
ab5088bf | 10408 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
10409 | Open the file specified by FILE_NAME and hand it off to BFD for |
10410 | preliminary analysis. Return a newly initialized bfd *, which | |
10411 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 10412 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
10413 | SEARCH_CWD is true if the current directory is to be searched. |
10414 | It will be searched before debug-file-directory. | |
13aaf454 DE |
10415 | If successful, the file is added to the bfd include table of the |
10416 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 10417 | If unable to find/open the file, return NULL. |
3019eac3 DE |
10418 | NOTE: This function is derived from symfile_bfd_open. */ |
10419 | ||
10420 | static bfd * | |
6ac97d4c | 10421 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 DE |
10422 | { |
10423 | bfd *sym_bfd; | |
80626a55 | 10424 | int desc, flags; |
3019eac3 | 10425 | char *absolute_name; |
9c02c129 DE |
10426 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
10427 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
10428 | to debug_file_directory. */ | |
10429 | char *search_path; | |
10430 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
10431 | ||
6ac97d4c DE |
10432 | if (search_cwd) |
10433 | { | |
10434 | if (*debug_file_directory != '\0') | |
10435 | search_path = concat (".", dirname_separator_string, | |
10436 | debug_file_directory, NULL); | |
10437 | else | |
10438 | search_path = xstrdup ("."); | |
10439 | } | |
9c02c129 | 10440 | else |
6ac97d4c | 10441 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 10442 | |
492c0ab7 | 10443 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
10444 | if (is_dwp) |
10445 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 10446 | desc = openp (search_path, flags, file_name, |
3019eac3 | 10447 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 10448 | xfree (search_path); |
3019eac3 DE |
10449 | if (desc < 0) |
10450 | return NULL; | |
10451 | ||
bb397797 | 10452 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
a4453b7e | 10453 | xfree (absolute_name); |
9c02c129 DE |
10454 | if (sym_bfd == NULL) |
10455 | return NULL; | |
3019eac3 DE |
10456 | bfd_set_cacheable (sym_bfd, 1); |
10457 | ||
10458 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
10459 | { | |
cbb099e8 | 10460 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
10461 | return NULL; |
10462 | } | |
10463 | ||
13aaf454 DE |
10464 | /* Success. Record the bfd as having been included by the objfile's bfd. |
10465 | This is important because things like demangled_names_hash lives in the | |
10466 | objfile's per_bfd space and may have references to things like symbol | |
10467 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
10468 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd); | |
10469 | ||
3019eac3 DE |
10470 | return sym_bfd; |
10471 | } | |
10472 | ||
ab5088bf | 10473 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
10474 | COMP_DIR is the DW_AT_comp_dir attribute. |
10475 | The result is the bfd handle of the file. | |
10476 | If there is a problem finding or opening the file, return NULL. | |
10477 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10478 | same as symfile_bfd_open. */ | |
10479 | ||
10480 | static bfd * | |
ab5088bf | 10481 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 DE |
10482 | { |
10483 | bfd *abfd; | |
3019eac3 | 10484 | |
80626a55 | 10485 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 10486 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
10487 | |
10488 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
10489 | ||
10490 | if (comp_dir != NULL) | |
10491 | { | |
80626a55 | 10492 | char *path_to_try = concat (comp_dir, SLASH_STRING, file_name, NULL); |
3019eac3 DE |
10493 | |
10494 | /* NOTE: If comp_dir is a relative path, this will also try the | |
10495 | search path, which seems useful. */ | |
6ac97d4c | 10496 | abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10497 | xfree (path_to_try); |
10498 | if (abfd != NULL) | |
10499 | return abfd; | |
10500 | } | |
10501 | ||
10502 | /* That didn't work, try debug-file-directory, which, despite its name, | |
10503 | is a list of paths. */ | |
10504 | ||
10505 | if (*debug_file_directory == '\0') | |
10506 | return NULL; | |
10507 | ||
6ac97d4c | 10508 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10509 | } |
10510 | ||
80626a55 DE |
10511 | /* This function is mapped across the sections and remembers the offset and |
10512 | size of each of the DWO debugging sections we are interested in. */ | |
10513 | ||
10514 | static void | |
10515 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
10516 | { | |
10517 | struct dwo_sections *dwo_sections = dwo_sections_ptr; | |
10518 | const struct dwop_section_names *names = &dwop_section_names; | |
10519 | ||
10520 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10521 | { | |
73869dc2 | 10522 | dwo_sections->abbrev.s.asection = sectp; |
80626a55 DE |
10523 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
10524 | } | |
10525 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10526 | { | |
73869dc2 | 10527 | dwo_sections->info.s.asection = sectp; |
80626a55 DE |
10528 | dwo_sections->info.size = bfd_get_section_size (sectp); |
10529 | } | |
10530 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10531 | { | |
73869dc2 | 10532 | dwo_sections->line.s.asection = sectp; |
80626a55 DE |
10533 | dwo_sections->line.size = bfd_get_section_size (sectp); |
10534 | } | |
10535 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10536 | { | |
73869dc2 | 10537 | dwo_sections->loc.s.asection = sectp; |
80626a55 DE |
10538 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
10539 | } | |
10540 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10541 | { | |
73869dc2 | 10542 | dwo_sections->macinfo.s.asection = sectp; |
80626a55 DE |
10543 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
10544 | } | |
10545 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10546 | { | |
73869dc2 | 10547 | dwo_sections->macro.s.asection = sectp; |
80626a55 DE |
10548 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
10549 | } | |
10550 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
10551 | { | |
73869dc2 | 10552 | dwo_sections->str.s.asection = sectp; |
80626a55 DE |
10553 | dwo_sections->str.size = bfd_get_section_size (sectp); |
10554 | } | |
10555 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10556 | { | |
73869dc2 | 10557 | dwo_sections->str_offsets.s.asection = sectp; |
80626a55 DE |
10558 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
10559 | } | |
10560 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10561 | { | |
10562 | struct dwarf2_section_info type_section; | |
10563 | ||
10564 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 10565 | type_section.s.asection = sectp; |
80626a55 DE |
10566 | type_section.size = bfd_get_section_size (sectp); |
10567 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
10568 | &type_section); | |
10569 | } | |
10570 | } | |
10571 | ||
ab5088bf | 10572 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 10573 | by PER_CU. This is for the non-DWP case. |
80626a55 | 10574 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
10575 | |
10576 | static struct dwo_file * | |
0ac5b59e DE |
10577 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
10578 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
10579 | { |
10580 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10581 | struct dwo_file *dwo_file; |
10582 | bfd *dbfd; | |
3019eac3 DE |
10583 | struct cleanup *cleanups; |
10584 | ||
ab5088bf | 10585 | dbfd = open_dwo_file (dwo_name, comp_dir); |
80626a55 DE |
10586 | if (dbfd == NULL) |
10587 | { | |
10588 | if (dwarf2_read_debug) | |
10589 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); | |
10590 | return NULL; | |
10591 | } | |
10592 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10593 | dwo_file->dwo_name = dwo_name; |
10594 | dwo_file->comp_dir = comp_dir; | |
80626a55 | 10595 | dwo_file->dbfd = dbfd; |
3019eac3 DE |
10596 | |
10597 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
10598 | ||
80626a55 | 10599 | bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections); |
3019eac3 | 10600 | |
19c3d4c9 | 10601 | dwo_file->cu = create_dwo_cu (dwo_file); |
3019eac3 DE |
10602 | |
10603 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
10604 | dwo_file->sections.types); | |
10605 | ||
10606 | discard_cleanups (cleanups); | |
10607 | ||
80626a55 DE |
10608 | if (dwarf2_read_debug) |
10609 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); | |
10610 | ||
3019eac3 DE |
10611 | return dwo_file; |
10612 | } | |
10613 | ||
80626a55 | 10614 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
10615 | size of each of the DWP debugging sections common to version 1 and 2 that |
10616 | we are interested in. */ | |
3019eac3 | 10617 | |
80626a55 | 10618 | static void |
73869dc2 DE |
10619 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
10620 | void *dwp_file_ptr) | |
3019eac3 | 10621 | { |
80626a55 DE |
10622 | struct dwp_file *dwp_file = dwp_file_ptr; |
10623 | const struct dwop_section_names *names = &dwop_section_names; | |
10624 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 10625 | |
80626a55 | 10626 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 10627 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
10628 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
10629 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 10630 | |
80626a55 DE |
10631 | /* Look for specific sections that we need. */ |
10632 | if (section_is_p (sectp->name, &names->str_dwo)) | |
10633 | { | |
73869dc2 | 10634 | dwp_file->sections.str.s.asection = sectp; |
80626a55 DE |
10635 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
10636 | } | |
10637 | else if (section_is_p (sectp->name, &names->cu_index)) | |
10638 | { | |
73869dc2 | 10639 | dwp_file->sections.cu_index.s.asection = sectp; |
80626a55 DE |
10640 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
10641 | } | |
10642 | else if (section_is_p (sectp->name, &names->tu_index)) | |
10643 | { | |
73869dc2 | 10644 | dwp_file->sections.tu_index.s.asection = sectp; |
80626a55 DE |
10645 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
10646 | } | |
10647 | } | |
3019eac3 | 10648 | |
73869dc2 DE |
10649 | /* This function is mapped across the sections and remembers the offset and |
10650 | size of each of the DWP version 2 debugging sections that we are interested | |
10651 | in. This is split into a separate function because we don't know if we | |
10652 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
10653 | ||
10654 | static void | |
10655 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
10656 | { | |
10657 | struct dwp_file *dwp_file = dwp_file_ptr; | |
10658 | const struct dwop_section_names *names = &dwop_section_names; | |
10659 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
10660 | ||
10661 | /* Record the ELF section number for later lookup: this is what the | |
10662 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
10663 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
10664 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
10665 | ||
10666 | /* Look for specific sections that we need. */ | |
10667 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10668 | { | |
10669 | dwp_file->sections.abbrev.s.asection = sectp; | |
10670 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
10671 | } | |
10672 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10673 | { | |
10674 | dwp_file->sections.info.s.asection = sectp; | |
10675 | dwp_file->sections.info.size = bfd_get_section_size (sectp); | |
10676 | } | |
10677 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10678 | { | |
10679 | dwp_file->sections.line.s.asection = sectp; | |
10680 | dwp_file->sections.line.size = bfd_get_section_size (sectp); | |
10681 | } | |
10682 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10683 | { | |
10684 | dwp_file->sections.loc.s.asection = sectp; | |
10685 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); | |
10686 | } | |
10687 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10688 | { | |
10689 | dwp_file->sections.macinfo.s.asection = sectp; | |
10690 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); | |
10691 | } | |
10692 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10693 | { | |
10694 | dwp_file->sections.macro.s.asection = sectp; | |
10695 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); | |
10696 | } | |
10697 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10698 | { | |
10699 | dwp_file->sections.str_offsets.s.asection = sectp; | |
10700 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
10701 | } | |
10702 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10703 | { | |
10704 | dwp_file->sections.types.s.asection = sectp; | |
10705 | dwp_file->sections.types.size = bfd_get_section_size (sectp); | |
10706 | } | |
10707 | } | |
10708 | ||
80626a55 | 10709 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10710 | |
80626a55 DE |
10711 | static hashval_t |
10712 | hash_dwp_loaded_cutus (const void *item) | |
10713 | { | |
10714 | const struct dwo_unit *dwo_unit = item; | |
3019eac3 | 10715 | |
80626a55 DE |
10716 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
10717 | return dwo_unit->signature; | |
3019eac3 DE |
10718 | } |
10719 | ||
80626a55 | 10720 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10721 | |
80626a55 DE |
10722 | static int |
10723 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 10724 | { |
80626a55 DE |
10725 | const struct dwo_unit *dua = a; |
10726 | const struct dwo_unit *dub = b; | |
3019eac3 | 10727 | |
80626a55 DE |
10728 | return dua->signature == dub->signature; |
10729 | } | |
3019eac3 | 10730 | |
80626a55 | 10731 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10732 | |
80626a55 DE |
10733 | static htab_t |
10734 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
10735 | { | |
10736 | return htab_create_alloc_ex (3, | |
10737 | hash_dwp_loaded_cutus, | |
10738 | eq_dwp_loaded_cutus, | |
10739 | NULL, | |
10740 | &objfile->objfile_obstack, | |
10741 | hashtab_obstack_allocate, | |
10742 | dummy_obstack_deallocate); | |
10743 | } | |
3019eac3 | 10744 | |
ab5088bf DE |
10745 | /* Try to open DWP file FILE_NAME. |
10746 | The result is the bfd handle of the file. | |
10747 | If there is a problem finding or opening the file, return NULL. | |
10748 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10749 | same as symfile_bfd_open. */ | |
10750 | ||
10751 | static bfd * | |
10752 | open_dwp_file (const char *file_name) | |
10753 | { | |
6ac97d4c DE |
10754 | bfd *abfd; |
10755 | ||
10756 | abfd = try_open_dwop_file (file_name, 1 /*is_dwp*/, 1 /*search_cwd*/); | |
10757 | if (abfd != NULL) | |
10758 | return abfd; | |
10759 | ||
10760 | /* Work around upstream bug 15652. | |
10761 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
10762 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
10763 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
10764 | of the executable's path may have discarded the needed info. | |
10765 | [IWBN if the dwp file name was recorded in the executable, akin to | |
10766 | .gnu_debuglink, but that doesn't exist yet.] | |
10767 | Strip the directory from FILE_NAME and search again. */ | |
10768 | if (*debug_file_directory != '\0') | |
10769 | { | |
10770 | /* Don't implicitly search the current directory here. | |
10771 | If the user wants to search "." to handle this case, | |
10772 | it must be added to debug-file-directory. */ | |
10773 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
10774 | 0 /*search_cwd*/); | |
10775 | } | |
10776 | ||
10777 | return NULL; | |
ab5088bf DE |
10778 | } |
10779 | ||
80626a55 DE |
10780 | /* Initialize the use of the DWP file for the current objfile. |
10781 | By convention the name of the DWP file is ${objfile}.dwp. | |
10782 | The result is NULL if it can't be found. */ | |
a766d390 | 10783 | |
80626a55 | 10784 | static struct dwp_file * |
ab5088bf | 10785 | open_and_init_dwp_file (void) |
80626a55 DE |
10786 | { |
10787 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10788 | struct dwp_file *dwp_file; | |
10789 | char *dwp_name; | |
10790 | bfd *dbfd; | |
10791 | struct cleanup *cleanups; | |
10792 | ||
82bf32bc JK |
10793 | /* Try to find first .dwp for the binary file before any symbolic links |
10794 | resolving. */ | |
10795 | dwp_name = xstrprintf ("%s.dwp", objfile->original_name); | |
80626a55 DE |
10796 | cleanups = make_cleanup (xfree, dwp_name); |
10797 | ||
ab5088bf | 10798 | dbfd = open_dwp_file (dwp_name); |
82bf32bc JK |
10799 | if (dbfd == NULL |
10800 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
10801 | { | |
10802 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
10803 | dwp_name = xstrprintf ("%s.dwp", objfile_name (objfile)); | |
10804 | make_cleanup (xfree, dwp_name); | |
10805 | dbfd = open_dwp_file (dwp_name); | |
10806 | } | |
10807 | ||
80626a55 DE |
10808 | if (dbfd == NULL) |
10809 | { | |
10810 | if (dwarf2_read_debug) | |
10811 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); | |
10812 | do_cleanups (cleanups); | |
10813 | return NULL; | |
3019eac3 | 10814 | } |
80626a55 | 10815 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
93417882 | 10816 | dwp_file->name = bfd_get_filename (dbfd); |
80626a55 DE |
10817 | dwp_file->dbfd = dbfd; |
10818 | do_cleanups (cleanups); | |
c906108c | 10819 | |
80626a55 DE |
10820 | /* +1: section 0 is unused */ |
10821 | dwp_file->num_sections = bfd_count_sections (dbfd) + 1; | |
10822 | dwp_file->elf_sections = | |
10823 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
10824 | dwp_file->num_sections, asection *); | |
10825 | ||
73869dc2 | 10826 | bfd_map_over_sections (dbfd, dwarf2_locate_common_dwp_sections, dwp_file); |
80626a55 DE |
10827 | |
10828 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
10829 | ||
10830 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
10831 | ||
73869dc2 DE |
10832 | /* The DWP file version is stored in the hash table. Oh well. */ |
10833 | if (dwp_file->cus->version != dwp_file->tus->version) | |
10834 | { | |
10835 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 10836 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 10837 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
10838 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
10839 | " TU version %s [in DWP file %s]"), | |
10840 | pulongest (dwp_file->cus->version), | |
10841 | pulongest (dwp_file->tus->version), dwp_name); | |
73869dc2 DE |
10842 | } |
10843 | dwp_file->version = dwp_file->cus->version; | |
10844 | ||
10845 | if (dwp_file->version == 2) | |
10846 | bfd_map_over_sections (dbfd, dwarf2_locate_v2_dwp_sections, dwp_file); | |
10847 | ||
19ac8c2e DE |
10848 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
10849 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 10850 | |
80626a55 DE |
10851 | if (dwarf2_read_debug) |
10852 | { | |
10853 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
10854 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
10855 | " %s CUs, %s TUs\n", |
10856 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
10857 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
10858 | } |
10859 | ||
10860 | return dwp_file; | |
3019eac3 | 10861 | } |
c906108c | 10862 | |
ab5088bf DE |
10863 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
10864 | ||
10865 | static struct dwp_file * | |
10866 | get_dwp_file (void) | |
10867 | { | |
10868 | if (! dwarf2_per_objfile->dwp_checked) | |
10869 | { | |
10870 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
10871 | dwarf2_per_objfile->dwp_checked = 1; | |
10872 | } | |
10873 | return dwarf2_per_objfile->dwp_file; | |
10874 | } | |
10875 | ||
80626a55 DE |
10876 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
10877 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
10878 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 10879 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
10880 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
10881 | ||
10882 | This is called, for example, when wanting to read a variable with a | |
10883 | complex location. Therefore we don't want to do file i/o for every call. | |
10884 | Therefore we don't want to look for a DWO file on every call. | |
10885 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
10886 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
10887 | for a DWO file. | |
10888 | ||
1c658ad5 | 10889 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 10890 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 10891 | |
3019eac3 | 10892 | static struct dwo_unit * |
80626a55 DE |
10893 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
10894 | const char *dwo_name, const char *comp_dir, | |
10895 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
10896 | { |
10897 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10898 | const char *kind = is_debug_types ? "TU" : "CU"; |
10899 | void **dwo_file_slot; | |
3019eac3 | 10900 | struct dwo_file *dwo_file; |
80626a55 | 10901 | struct dwp_file *dwp_file; |
cb1df416 | 10902 | |
6a506a2d DE |
10903 | /* First see if there's a DWP file. |
10904 | If we have a DWP file but didn't find the DWO inside it, don't | |
10905 | look for the original DWO file. It makes gdb behave differently | |
10906 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 10907 | |
ab5088bf | 10908 | dwp_file = get_dwp_file (); |
80626a55 | 10909 | if (dwp_file != NULL) |
cf2c3c16 | 10910 | { |
80626a55 DE |
10911 | const struct dwp_hash_table *dwp_htab = |
10912 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10913 | ||
10914 | if (dwp_htab != NULL) | |
10915 | { | |
10916 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
10917 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
10918 | signature, is_debug_types); | |
80626a55 DE |
10919 | |
10920 | if (dwo_cutu != NULL) | |
10921 | { | |
10922 | if (dwarf2_read_debug) | |
10923 | { | |
10924 | fprintf_unfiltered (gdb_stdlog, | |
10925 | "Virtual DWO %s %s found: @%s\n", | |
10926 | kind, hex_string (signature), | |
10927 | host_address_to_string (dwo_cutu)); | |
10928 | } | |
10929 | return dwo_cutu; | |
10930 | } | |
10931 | } | |
10932 | } | |
6a506a2d | 10933 | else |
80626a55 | 10934 | { |
6a506a2d | 10935 | /* No DWP file, look for the DWO file. */ |
80626a55 | 10936 | |
6a506a2d DE |
10937 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
10938 | if (*dwo_file_slot == NULL) | |
80626a55 | 10939 | { |
6a506a2d DE |
10940 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
10941 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 10942 | } |
6a506a2d DE |
10943 | /* NOTE: This will be NULL if unable to open the file. */ |
10944 | dwo_file = *dwo_file_slot; | |
3019eac3 | 10945 | |
6a506a2d | 10946 | if (dwo_file != NULL) |
19c3d4c9 | 10947 | { |
6a506a2d DE |
10948 | struct dwo_unit *dwo_cutu = NULL; |
10949 | ||
10950 | if (is_debug_types && dwo_file->tus) | |
10951 | { | |
10952 | struct dwo_unit find_dwo_cutu; | |
10953 | ||
10954 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
10955 | find_dwo_cutu.signature = signature; | |
10956 | dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu); | |
10957 | } | |
10958 | else if (!is_debug_types && dwo_file->cu) | |
80626a55 | 10959 | { |
6a506a2d DE |
10960 | if (signature == dwo_file->cu->signature) |
10961 | dwo_cutu = dwo_file->cu; | |
10962 | } | |
10963 | ||
10964 | if (dwo_cutu != NULL) | |
10965 | { | |
10966 | if (dwarf2_read_debug) | |
10967 | { | |
10968 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
10969 | kind, dwo_name, hex_string (signature), | |
10970 | host_address_to_string (dwo_cutu)); | |
10971 | } | |
10972 | return dwo_cutu; | |
80626a55 DE |
10973 | } |
10974 | } | |
2e276125 | 10975 | } |
9cdd5dbd | 10976 | |
80626a55 DE |
10977 | /* We didn't find it. This could mean a dwo_id mismatch, or |
10978 | someone deleted the DWO/DWP file, or the search path isn't set up | |
10979 | correctly to find the file. */ | |
10980 | ||
10981 | if (dwarf2_read_debug) | |
10982 | { | |
10983 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
10984 | kind, dwo_name, hex_string (signature)); | |
10985 | } | |
3019eac3 | 10986 | |
6656a72d DE |
10987 | /* This is a warning and not a complaint because it can be caused by |
10988 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
10989 | { |
10990 | /* Print the name of the DWP file if we looked there, helps the user | |
10991 | better diagnose the problem. */ | |
10992 | char *dwp_text = NULL; | |
10993 | struct cleanup *cleanups; | |
10994 | ||
10995 | if (dwp_file != NULL) | |
10996 | dwp_text = xstrprintf (" [in DWP file %s]", lbasename (dwp_file->name)); | |
10997 | cleanups = make_cleanup (xfree, dwp_text); | |
10998 | ||
10999 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset 0x%x" | |
11000 | " [in module %s]"), | |
11001 | kind, dwo_name, hex_string (signature), | |
11002 | dwp_text != NULL ? dwp_text : "", | |
11003 | this_unit->is_debug_types ? "TU" : "CU", | |
11004 | this_unit->offset.sect_off, objfile_name (objfile)); | |
11005 | ||
11006 | do_cleanups (cleanups); | |
11007 | } | |
3019eac3 | 11008 | return NULL; |
5fb290d7 DJ |
11009 | } |
11010 | ||
80626a55 DE |
11011 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
11012 | See lookup_dwo_cutu_unit for details. */ | |
11013 | ||
11014 | static struct dwo_unit * | |
11015 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
11016 | const char *dwo_name, const char *comp_dir, | |
11017 | ULONGEST signature) | |
11018 | { | |
11019 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
11020 | } | |
11021 | ||
11022 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
11023 | See lookup_dwo_cutu_unit for details. */ | |
11024 | ||
11025 | static struct dwo_unit * | |
11026 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
11027 | const char *dwo_name, const char *comp_dir) | |
11028 | { | |
11029 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
11030 | } | |
11031 | ||
89e63ee4 DE |
11032 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
11033 | ||
11034 | static int | |
11035 | queue_and_load_dwo_tu (void **slot, void *info) | |
11036 | { | |
11037 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
11038 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
11039 | ULONGEST signature = dwo_unit->signature; | |
11040 | struct signatured_type *sig_type = | |
11041 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
11042 | ||
11043 | if (sig_type != NULL) | |
11044 | { | |
11045 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
11046 | ||
11047 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
11048 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
11049 | while processing PER_CU. */ | |
11050 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
11051 | load_full_type_unit (sig_cu); | |
11052 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
11053 | } | |
11054 | ||
11055 | return 1; | |
11056 | } | |
11057 | ||
11058 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
11059 | The DWO may have the only definition of the type, though it may not be | |
11060 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
11061 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
11062 | ||
11063 | static void | |
11064 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
11065 | { | |
11066 | struct dwo_unit *dwo_unit; | |
11067 | struct dwo_file *dwo_file; | |
11068 | ||
11069 | gdb_assert (!per_cu->is_debug_types); | |
11070 | gdb_assert (get_dwp_file () == NULL); | |
11071 | gdb_assert (per_cu->cu != NULL); | |
11072 | ||
11073 | dwo_unit = per_cu->cu->dwo_unit; | |
11074 | gdb_assert (dwo_unit != NULL); | |
11075 | ||
11076 | dwo_file = dwo_unit->dwo_file; | |
11077 | if (dwo_file->tus != NULL) | |
11078 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
11079 | } | |
11080 | ||
3019eac3 DE |
11081 | /* Free all resources associated with DWO_FILE. |
11082 | Close the DWO file and munmap the sections. | |
11083 | All memory should be on the objfile obstack. */ | |
348e048f DE |
11084 | |
11085 | static void | |
3019eac3 | 11086 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 11087 | { |
3019eac3 DE |
11088 | int ix; |
11089 | struct dwarf2_section_info *section; | |
348e048f | 11090 | |
5c6fa7ab | 11091 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 11092 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 11093 | |
3019eac3 DE |
11094 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
11095 | } | |
348e048f | 11096 | |
3019eac3 | 11097 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 11098 | |
3019eac3 DE |
11099 | static void |
11100 | free_dwo_file_cleanup (void *arg) | |
11101 | { | |
11102 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
11103 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 11104 | |
3019eac3 DE |
11105 | free_dwo_file (dwo_file, objfile); |
11106 | } | |
348e048f | 11107 | |
3019eac3 | 11108 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 11109 | |
3019eac3 DE |
11110 | static int |
11111 | free_dwo_file_from_slot (void **slot, void *info) | |
11112 | { | |
11113 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
11114 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 11115 | |
3019eac3 | 11116 | free_dwo_file (dwo_file, objfile); |
348e048f | 11117 | |
3019eac3 DE |
11118 | return 1; |
11119 | } | |
348e048f | 11120 | |
3019eac3 | 11121 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 11122 | |
3019eac3 DE |
11123 | static void |
11124 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
11125 | { | |
11126 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 11127 | } |
3019eac3 DE |
11128 | \f |
11129 | /* Read in various DIEs. */ | |
348e048f | 11130 | |
d389af10 JK |
11131 | /* qsort helper for inherit_abstract_dies. */ |
11132 | ||
11133 | static int | |
11134 | unsigned_int_compar (const void *ap, const void *bp) | |
11135 | { | |
11136 | unsigned int a = *(unsigned int *) ap; | |
11137 | unsigned int b = *(unsigned int *) bp; | |
11138 | ||
11139 | return (a > b) - (b > a); | |
11140 | } | |
11141 | ||
11142 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
11143 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
11144 | already referenced by DW_AT_abstract_origin from the children of the | |
11145 | current DIE. */ | |
d389af10 JK |
11146 | |
11147 | static void | |
11148 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
11149 | { | |
11150 | struct die_info *child_die; | |
11151 | unsigned die_children_count; | |
11152 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
11153 | sect_offset *offsets; |
11154 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
11155 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
11156 | struct die_info *origin_die; | |
11157 | /* Iterator of the ORIGIN_DIE children. */ | |
11158 | struct die_info *origin_child_die; | |
11159 | struct cleanup *cleanups; | |
11160 | struct attribute *attr; | |
cd02d79d PA |
11161 | struct dwarf2_cu *origin_cu; |
11162 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
11163 | |
11164 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11165 | if (!attr) | |
11166 | return; | |
11167 | ||
cd02d79d PA |
11168 | /* Note that following die references may follow to a die in a |
11169 | different cu. */ | |
11170 | ||
11171 | origin_cu = cu; | |
11172 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
11173 | ||
11174 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
11175 | symbols in. */ | |
11176 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
11177 | origin_cu->list_in_scope = cu->list_in_scope; | |
11178 | ||
edb3359d DJ |
11179 | if (die->tag != origin_die->tag |
11180 | && !(die->tag == DW_TAG_inlined_subroutine | |
11181 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11182 | complaint (&symfile_complaints, |
11183 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 11184 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
11185 | |
11186 | child_die = die->child; | |
11187 | die_children_count = 0; | |
11188 | while (child_die && child_die->tag) | |
11189 | { | |
11190 | child_die = sibling_die (child_die); | |
11191 | die_children_count++; | |
11192 | } | |
11193 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
11194 | cleanups = make_cleanup (xfree, offsets); | |
11195 | ||
11196 | offsets_end = offsets; | |
11197 | child_die = die->child; | |
11198 | while (child_die && child_die->tag) | |
11199 | { | |
c38f313d DJ |
11200 | /* For each CHILD_DIE, find the corresponding child of |
11201 | ORIGIN_DIE. If there is more than one layer of | |
11202 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
11203 | but GCC versions at least through 4.4 generate this (GCC PR | |
11204 | 40573). */ | |
11205 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 11206 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 11207 | |
c38f313d DJ |
11208 | while (1) |
11209 | { | |
cd02d79d PA |
11210 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
11211 | child_origin_cu); | |
c38f313d DJ |
11212 | if (attr == NULL) |
11213 | break; | |
cd02d79d PA |
11214 | child_origin_die = follow_die_ref (child_origin_die, attr, |
11215 | &child_origin_cu); | |
c38f313d DJ |
11216 | } |
11217 | ||
d389af10 JK |
11218 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
11219 | counterpart may exist. */ | |
c38f313d | 11220 | if (child_origin_die != child_die) |
d389af10 | 11221 | { |
edb3359d DJ |
11222 | if (child_die->tag != child_origin_die->tag |
11223 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
11224 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11225 | complaint (&symfile_complaints, |
11226 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11227 | "different tags"), child_die->offset.sect_off, |
11228 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11229 | if (child_origin_die->parent != origin_die) |
11230 | complaint (&symfile_complaints, | |
11231 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11232 | "different parents"), child_die->offset.sect_off, |
11233 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11234 | else |
11235 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
11236 | } |
11237 | child_die = sibling_die (child_die); | |
11238 | } | |
11239 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
11240 | unsigned_int_compar); | |
11241 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 11242 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
11243 | complaint (&symfile_complaints, |
11244 | _("Multiple children of DIE 0x%x refer " | |
11245 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 11246 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
11247 | |
11248 | offsetp = offsets; | |
11249 | origin_child_die = origin_die->child; | |
11250 | while (origin_child_die && origin_child_die->tag) | |
11251 | { | |
11252 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
11253 | while (offsetp < offsets_end |
11254 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 11255 | offsetp++; |
b64f50a1 JK |
11256 | if (offsetp >= offsets_end |
11257 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 | 11258 | { |
adde2bff DE |
11259 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
11260 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
11261 | This can happen with mutually referenced abstract_origins. | |
11262 | PR 16581. */ | |
11263 | if (!origin_child_die->in_process) | |
11264 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
11265 | } |
11266 | origin_child_die = sibling_die (origin_child_die); | |
11267 | } | |
cd02d79d | 11268 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
11269 | |
11270 | do_cleanups (cleanups); | |
11271 | } | |
11272 | ||
c906108c | 11273 | static void |
e7c27a73 | 11274 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11275 | { |
e7c27a73 | 11276 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11277 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 11278 | struct context_stack *new; |
c906108c SS |
11279 | CORE_ADDR lowpc; |
11280 | CORE_ADDR highpc; | |
11281 | struct die_info *child_die; | |
edb3359d | 11282 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 11283 | const char *name; |
e142c38c | 11284 | CORE_ADDR baseaddr; |
801e3a5b | 11285 | struct block *block; |
edb3359d | 11286 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
11287 | VEC (symbolp) *template_args = NULL; |
11288 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
11289 | |
11290 | if (inlined_func) | |
11291 | { | |
11292 | /* If we do not have call site information, we can't show the | |
11293 | caller of this inlined function. That's too confusing, so | |
11294 | only use the scope for local variables. */ | |
11295 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
11296 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
11297 | if (call_line == NULL || call_file == NULL) | |
11298 | { | |
11299 | read_lexical_block_scope (die, cu); | |
11300 | return; | |
11301 | } | |
11302 | } | |
c906108c | 11303 | |
e142c38c DJ |
11304 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
11305 | ||
94af9270 | 11306 | name = dwarf2_name (die, cu); |
c906108c | 11307 | |
e8d05480 JB |
11308 | /* Ignore functions with missing or empty names. These are actually |
11309 | illegal according to the DWARF standard. */ | |
11310 | if (name == NULL) | |
11311 | { | |
11312 | complaint (&symfile_complaints, | |
b64f50a1 JK |
11313 | _("missing name for subprogram DIE at %d"), |
11314 | die->offset.sect_off); | |
e8d05480 JB |
11315 | return; |
11316 | } | |
11317 | ||
11318 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
11319 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
11320 | { | |
ae4d0c03 PM |
11321 | attr = dwarf2_attr (die, DW_AT_external, cu); |
11322 | if (!attr || !DW_UNSND (attr)) | |
11323 | complaint (&symfile_complaints, | |
3e43a32a MS |
11324 | _("cannot get low and high bounds " |
11325 | "for subprogram DIE at %d"), | |
b64f50a1 | 11326 | die->offset.sect_off); |
e8d05480 JB |
11327 | return; |
11328 | } | |
c906108c | 11329 | |
3e29f34a MR |
11330 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11331 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 11332 | |
34eaf542 TT |
11333 | /* If we have any template arguments, then we must allocate a |
11334 | different sort of symbol. */ | |
11335 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
11336 | { | |
11337 | if (child_die->tag == DW_TAG_template_type_param | |
11338 | || child_die->tag == DW_TAG_template_value_param) | |
11339 | { | |
e623cf5d | 11340 | templ_func = allocate_template_symbol (objfile); |
34eaf542 TT |
11341 | templ_func->base.is_cplus_template_function = 1; |
11342 | break; | |
11343 | } | |
11344 | } | |
11345 | ||
c906108c | 11346 | new = push_context (0, lowpc); |
34eaf542 TT |
11347 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
11348 | (struct symbol *) templ_func); | |
4c2df51b | 11349 | |
4cecd739 DJ |
11350 | /* If there is a location expression for DW_AT_frame_base, record |
11351 | it. */ | |
e142c38c | 11352 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 11353 | if (attr) |
f1e6e072 | 11354 | dwarf2_symbol_mark_computed (attr, new->name, cu, 1); |
4c2df51b | 11355 | |
e142c38c | 11356 | cu->list_in_scope = &local_symbols; |
c906108c | 11357 | |
639d11d3 | 11358 | if (die->child != NULL) |
c906108c | 11359 | { |
639d11d3 | 11360 | child_die = die->child; |
c906108c SS |
11361 | while (child_die && child_die->tag) |
11362 | { | |
34eaf542 TT |
11363 | if (child_die->tag == DW_TAG_template_type_param |
11364 | || child_die->tag == DW_TAG_template_value_param) | |
11365 | { | |
11366 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
11367 | ||
f1078f66 DJ |
11368 | if (arg != NULL) |
11369 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
11370 | } |
11371 | else | |
11372 | process_die (child_die, cu); | |
c906108c SS |
11373 | child_die = sibling_die (child_die); |
11374 | } | |
11375 | } | |
11376 | ||
d389af10 JK |
11377 | inherit_abstract_dies (die, cu); |
11378 | ||
4a811a97 UW |
11379 | /* If we have a DW_AT_specification, we might need to import using |
11380 | directives from the context of the specification DIE. See the | |
11381 | comment in determine_prefix. */ | |
11382 | if (cu->language == language_cplus | |
11383 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
11384 | { | |
11385 | struct dwarf2_cu *spec_cu = cu; | |
11386 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
11387 | ||
11388 | while (spec_die) | |
11389 | { | |
11390 | child_die = spec_die->child; | |
11391 | while (child_die && child_die->tag) | |
11392 | { | |
11393 | if (child_die->tag == DW_TAG_imported_module) | |
11394 | process_die (child_die, spec_cu); | |
11395 | child_die = sibling_die (child_die); | |
11396 | } | |
11397 | ||
11398 | /* In some cases, GCC generates specification DIEs that | |
11399 | themselves contain DW_AT_specification attributes. */ | |
11400 | spec_die = die_specification (spec_die, &spec_cu); | |
11401 | } | |
11402 | } | |
11403 | ||
c906108c SS |
11404 | new = pop_context (); |
11405 | /* Make a block for the local symbols within. */ | |
801e3a5b | 11406 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
4d663531 | 11407 | lowpc, highpc); |
801e3a5b | 11408 | |
df8a16a1 | 11409 | /* For C++, set the block's scope. */ |
195a3f6c | 11410 | if ((cu->language == language_cplus || cu->language == language_fortran) |
4d4ec4e5 | 11411 | && cu->processing_has_namespace_info) |
195a3f6c TT |
11412 | block_set_scope (block, determine_prefix (die, cu), |
11413 | &objfile->objfile_obstack); | |
df8a16a1 | 11414 | |
801e3a5b JB |
11415 | /* If we have address ranges, record them. */ |
11416 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 11417 | |
3e29f34a MR |
11418 | gdbarch_make_symbol_special (gdbarch, new->name, objfile); |
11419 | ||
34eaf542 TT |
11420 | /* Attach template arguments to function. */ |
11421 | if (! VEC_empty (symbolp, template_args)) | |
11422 | { | |
11423 | gdb_assert (templ_func != NULL); | |
11424 | ||
11425 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
11426 | templ_func->template_arguments | |
11427 | = obstack_alloc (&objfile->objfile_obstack, | |
11428 | (templ_func->n_template_arguments | |
11429 | * sizeof (struct symbol *))); | |
11430 | memcpy (templ_func->template_arguments, | |
11431 | VEC_address (symbolp, template_args), | |
11432 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
11433 | VEC_free (symbolp, template_args); | |
11434 | } | |
11435 | ||
208d8187 JB |
11436 | /* In C++, we can have functions nested inside functions (e.g., when |
11437 | a function declares a class that has methods). This means that | |
11438 | when we finish processing a function scope, we may need to go | |
11439 | back to building a containing block's symbol lists. */ | |
11440 | local_symbols = new->locals; | |
27aa8d6a | 11441 | using_directives = new->using_directives; |
208d8187 | 11442 | |
921e78cf JB |
11443 | /* If we've finished processing a top-level function, subsequent |
11444 | symbols go in the file symbol list. */ | |
11445 | if (outermost_context_p ()) | |
e142c38c | 11446 | cu->list_in_scope = &file_symbols; |
c906108c SS |
11447 | } |
11448 | ||
11449 | /* Process all the DIES contained within a lexical block scope. Start | |
11450 | a new scope, process the dies, and then close the scope. */ | |
11451 | ||
11452 | static void | |
e7c27a73 | 11453 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11454 | { |
e7c27a73 | 11455 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11456 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 11457 | struct context_stack *new; |
c906108c SS |
11458 | CORE_ADDR lowpc, highpc; |
11459 | struct die_info *child_die; | |
e142c38c DJ |
11460 | CORE_ADDR baseaddr; |
11461 | ||
11462 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
11463 | |
11464 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
11465 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
11466 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 11467 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 11468 | describe ranges. */ |
d85a05f0 | 11469 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c | 11470 | return; |
3e29f34a MR |
11471 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11472 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
11473 | |
11474 | push_context (0, lowpc); | |
639d11d3 | 11475 | if (die->child != NULL) |
c906108c | 11476 | { |
639d11d3 | 11477 | child_die = die->child; |
c906108c SS |
11478 | while (child_die && child_die->tag) |
11479 | { | |
e7c27a73 | 11480 | process_die (child_die, cu); |
c906108c SS |
11481 | child_die = sibling_die (child_die); |
11482 | } | |
11483 | } | |
11484 | new = pop_context (); | |
11485 | ||
8540c487 | 11486 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 11487 | { |
801e3a5b JB |
11488 | struct block *block |
11489 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
4d663531 | 11490 | highpc); |
801e3a5b JB |
11491 | |
11492 | /* Note that recording ranges after traversing children, as we | |
11493 | do here, means that recording a parent's ranges entails | |
11494 | walking across all its children's ranges as they appear in | |
11495 | the address map, which is quadratic behavior. | |
11496 | ||
11497 | It would be nicer to record the parent's ranges before | |
11498 | traversing its children, simply overriding whatever you find | |
11499 | there. But since we don't even decide whether to create a | |
11500 | block until after we've traversed its children, that's hard | |
11501 | to do. */ | |
11502 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
11503 | } |
11504 | local_symbols = new->locals; | |
27aa8d6a | 11505 | using_directives = new->using_directives; |
c906108c SS |
11506 | } |
11507 | ||
96408a79 SA |
11508 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
11509 | ||
11510 | static void | |
11511 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11512 | { | |
11513 | struct objfile *objfile = cu->objfile; | |
11514 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11515 | CORE_ADDR pc, baseaddr; | |
11516 | struct attribute *attr; | |
11517 | struct call_site *call_site, call_site_local; | |
11518 | void **slot; | |
11519 | int nparams; | |
11520 | struct die_info *child_die; | |
11521 | ||
11522 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
11523 | ||
11524 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
11525 | if (!attr) | |
11526 | { | |
11527 | complaint (&symfile_complaints, | |
11528 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
11529 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11530 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11531 | return; |
11532 | } | |
31aa7e4e | 11533 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 11534 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
11535 | |
11536 | if (cu->call_site_htab == NULL) | |
11537 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
11538 | NULL, &objfile->objfile_obstack, | |
11539 | hashtab_obstack_allocate, NULL); | |
11540 | call_site_local.pc = pc; | |
11541 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
11542 | if (*slot != NULL) | |
11543 | { | |
11544 | complaint (&symfile_complaints, | |
11545 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
11546 | "DIE 0x%x [in module %s]"), | |
4262abfb JK |
11547 | paddress (gdbarch, pc), die->offset.sect_off, |
11548 | objfile_name (objfile)); | |
96408a79 SA |
11549 | return; |
11550 | } | |
11551 | ||
11552 | /* Count parameters at the caller. */ | |
11553 | ||
11554 | nparams = 0; | |
11555 | for (child_die = die->child; child_die && child_die->tag; | |
11556 | child_die = sibling_die (child_die)) | |
11557 | { | |
11558 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11559 | { | |
11560 | complaint (&symfile_complaints, | |
11561 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
11562 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb JK |
11563 | child_die->tag, child_die->offset.sect_off, |
11564 | objfile_name (objfile)); | |
96408a79 SA |
11565 | continue; |
11566 | } | |
11567 | ||
11568 | nparams++; | |
11569 | } | |
11570 | ||
11571 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
11572 | (sizeof (*call_site) | |
11573 | + (sizeof (*call_site->parameter) | |
11574 | * (nparams - 1)))); | |
11575 | *slot = call_site; | |
11576 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
11577 | call_site->pc = pc; | |
11578 | ||
11579 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
11580 | { | |
11581 | struct die_info *func_die; | |
11582 | ||
11583 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
11584 | for (func_die = die->parent; | |
11585 | func_die && func_die->tag != DW_TAG_subprogram | |
11586 | && func_die->tag != DW_TAG_subroutine_type; | |
11587 | func_die = func_die->parent); | |
11588 | ||
11589 | /* DW_AT_GNU_all_call_sites is a superset | |
11590 | of DW_AT_GNU_all_tail_call_sites. */ | |
11591 | if (func_die | |
11592 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
11593 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
11594 | { | |
11595 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
11596 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
11597 | both the initial caller containing the real return address PC and | |
11598 | the final callee containing the current PC of a chain of tail | |
11599 | calls do not need to have the tail call list complete. But any | |
11600 | function candidate for a virtual tail call frame searched via | |
11601 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
11602 | determined unambiguously. */ | |
11603 | } | |
11604 | else | |
11605 | { | |
11606 | struct type *func_type = NULL; | |
11607 | ||
11608 | if (func_die) | |
11609 | func_type = get_die_type (func_die, cu); | |
11610 | if (func_type != NULL) | |
11611 | { | |
11612 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
11613 | ||
11614 | /* Enlist this call site to the function. */ | |
11615 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
11616 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
11617 | } | |
11618 | else | |
11619 | complaint (&symfile_complaints, | |
11620 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
11621 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11622 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11623 | } |
11624 | } | |
11625 | ||
11626 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
11627 | if (attr == NULL) | |
11628 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11629 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
11630 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
11631 | /* Keep NULL DWARF_BLOCK. */; | |
11632 | else if (attr_form_is_block (attr)) | |
11633 | { | |
11634 | struct dwarf2_locexpr_baton *dlbaton; | |
11635 | ||
11636 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
11637 | dlbaton->data = DW_BLOCK (attr)->data; | |
11638 | dlbaton->size = DW_BLOCK (attr)->size; | |
11639 | dlbaton->per_cu = cu->per_cu; | |
11640 | ||
11641 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
11642 | } | |
7771576e | 11643 | else if (attr_form_is_ref (attr)) |
96408a79 | 11644 | { |
96408a79 SA |
11645 | struct dwarf2_cu *target_cu = cu; |
11646 | struct die_info *target_die; | |
11647 | ||
ac9ec31b | 11648 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
11649 | gdb_assert (target_cu->objfile == objfile); |
11650 | if (die_is_declaration (target_die, target_cu)) | |
11651 | { | |
9112db09 JK |
11652 | const char *target_physname = NULL; |
11653 | struct attribute *target_attr; | |
11654 | ||
11655 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
11656 | target_attr = dwarf2_attr (target_die, DW_AT_linkage_name, target_cu); | |
11657 | if (target_attr == NULL) | |
11658 | target_attr = dwarf2_attr (target_die, DW_AT_MIPS_linkage_name, | |
11659 | target_cu); | |
11660 | if (target_attr != NULL && DW_STRING (target_attr) != NULL) | |
11661 | target_physname = DW_STRING (target_attr); | |
11662 | else | |
11663 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
96408a79 SA |
11664 | if (target_physname == NULL) |
11665 | complaint (&symfile_complaints, | |
11666 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11667 | "physname, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11668 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11669 | else |
7d455152 | 11670 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
11671 | } |
11672 | else | |
11673 | { | |
11674 | CORE_ADDR lowpc; | |
11675 | ||
11676 | /* DW_AT_entry_pc should be preferred. */ | |
11677 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
11678 | complaint (&symfile_complaints, | |
11679 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11680 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11681 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11682 | else |
3e29f34a MR |
11683 | { |
11684 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
11685 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
11686 | } | |
96408a79 SA |
11687 | } |
11688 | } | |
11689 | else | |
11690 | complaint (&symfile_complaints, | |
11691 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
11692 | "block nor reference, for DIE 0x%x [in module %s]"), | |
4262abfb | 11693 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11694 | |
11695 | call_site->per_cu = cu->per_cu; | |
11696 | ||
11697 | for (child_die = die->child; | |
11698 | child_die && child_die->tag; | |
11699 | child_die = sibling_die (child_die)) | |
11700 | { | |
96408a79 | 11701 | struct call_site_parameter *parameter; |
1788b2d3 | 11702 | struct attribute *loc, *origin; |
96408a79 SA |
11703 | |
11704 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11705 | { | |
11706 | /* Already printed the complaint above. */ | |
11707 | continue; | |
11708 | } | |
11709 | ||
11710 | gdb_assert (call_site->parameter_count < nparams); | |
11711 | parameter = &call_site->parameter[call_site->parameter_count]; | |
11712 | ||
1788b2d3 JK |
11713 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
11714 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
11715 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 11716 | |
24c5c679 | 11717 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 | 11718 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
7771576e | 11719 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 JK |
11720 | { |
11721 | sect_offset offset; | |
11722 | ||
11723 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
11724 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
11725 | if (!offset_in_cu_p (&cu->header, offset)) |
11726 | { | |
11727 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
11728 | binding can be done only inside one CU. Such referenced DIE | |
11729 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
11730 | complaint (&symfile_complaints, | |
11731 | _("DW_AT_abstract_origin offset is not in CU for " | |
11732 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11733 | "[in module %s]"), | |
4262abfb | 11734 | child_die->offset.sect_off, objfile_name (objfile)); |
d76b7dbc JK |
11735 | continue; |
11736 | } | |
1788b2d3 JK |
11737 | parameter->u.param_offset.cu_off = (offset.sect_off |
11738 | - cu->header.offset.sect_off); | |
11739 | } | |
11740 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
11741 | { |
11742 | complaint (&symfile_complaints, | |
11743 | _("No DW_FORM_block* DW_AT_location for " | |
11744 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11745 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11746 | continue; |
11747 | } | |
24c5c679 | 11748 | else |
96408a79 | 11749 | { |
24c5c679 JK |
11750 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
11751 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
11752 | if (parameter->u.dwarf_reg != -1) | |
11753 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
11754 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
11755 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
11756 | ¶meter->u.fb_offset)) | |
11757 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
11758 | else | |
11759 | { | |
11760 | complaint (&symfile_complaints, | |
11761 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
11762 | "for DW_FORM_block* DW_AT_location is supported for " | |
11763 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11764 | "[in module %s]"), | |
4262abfb | 11765 | child_die->offset.sect_off, objfile_name (objfile)); |
24c5c679 JK |
11766 | continue; |
11767 | } | |
96408a79 SA |
11768 | } |
11769 | ||
11770 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
11771 | if (!attr_form_is_block (attr)) | |
11772 | { | |
11773 | complaint (&symfile_complaints, | |
11774 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
11775 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11776 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11777 | continue; |
11778 | } | |
11779 | parameter->value = DW_BLOCK (attr)->data; | |
11780 | parameter->value_size = DW_BLOCK (attr)->size; | |
11781 | ||
11782 | /* Parameters are not pre-cleared by memset above. */ | |
11783 | parameter->data_value = NULL; | |
11784 | parameter->data_value_size = 0; | |
11785 | call_site->parameter_count++; | |
11786 | ||
11787 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
11788 | if (attr) | |
11789 | { | |
11790 | if (!attr_form_is_block (attr)) | |
11791 | complaint (&symfile_complaints, | |
11792 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
11793 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11794 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11795 | else |
11796 | { | |
11797 | parameter->data_value = DW_BLOCK (attr)->data; | |
11798 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
11799 | } | |
11800 | } | |
11801 | } | |
11802 | } | |
11803 | ||
43039443 | 11804 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
11805 | Return 1 if the attributes are present and valid, otherwise, return 0. |
11806 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
11807 | |
11808 | static int | |
11809 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
11810 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
11811 | struct partial_symtab *ranges_pst) | |
43039443 JK |
11812 | { |
11813 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 11814 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
43039443 JK |
11815 | struct comp_unit_head *cu_header = &cu->header; |
11816 | bfd *obfd = objfile->obfd; | |
11817 | unsigned int addr_size = cu_header->addr_size; | |
11818 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11819 | /* Base address selection entry. */ | |
11820 | CORE_ADDR base; | |
11821 | int found_base; | |
11822 | unsigned int dummy; | |
d521ce57 | 11823 | const gdb_byte *buffer; |
43039443 JK |
11824 | CORE_ADDR marker; |
11825 | int low_set; | |
11826 | CORE_ADDR low = 0; | |
11827 | CORE_ADDR high = 0; | |
ff013f42 | 11828 | CORE_ADDR baseaddr; |
43039443 | 11829 | |
d00adf39 DE |
11830 | found_base = cu->base_known; |
11831 | base = cu->base_address; | |
43039443 | 11832 | |
be391dca | 11833 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11834 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
11835 | { |
11836 | complaint (&symfile_complaints, | |
11837 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
11838 | offset); | |
11839 | return 0; | |
11840 | } | |
dce234bc | 11841 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
11842 | |
11843 | /* Read in the largest possible address. */ | |
11844 | marker = read_address (obfd, buffer, cu, &dummy); | |
11845 | if ((marker & mask) == mask) | |
11846 | { | |
11847 | /* If we found the largest possible address, then | |
11848 | read the base address. */ | |
11849 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11850 | buffer += 2 * addr_size; | |
11851 | offset += 2 * addr_size; | |
11852 | found_base = 1; | |
11853 | } | |
11854 | ||
11855 | low_set = 0; | |
11856 | ||
e7030f15 | 11857 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 11858 | |
43039443 JK |
11859 | while (1) |
11860 | { | |
11861 | CORE_ADDR range_beginning, range_end; | |
11862 | ||
11863 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
11864 | buffer += addr_size; | |
11865 | range_end = read_address (obfd, buffer, cu, &dummy); | |
11866 | buffer += addr_size; | |
11867 | offset += 2 * addr_size; | |
11868 | ||
11869 | /* An end of list marker is a pair of zero addresses. */ | |
11870 | if (range_beginning == 0 && range_end == 0) | |
11871 | /* Found the end of list entry. */ | |
11872 | break; | |
11873 | ||
11874 | /* Each base address selection entry is a pair of 2 values. | |
11875 | The first is the largest possible address, the second is | |
11876 | the base address. Check for a base address here. */ | |
11877 | if ((range_beginning & mask) == mask) | |
11878 | { | |
11879 | /* If we found the largest possible address, then | |
11880 | read the base address. */ | |
11881 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11882 | found_base = 1; | |
11883 | continue; | |
11884 | } | |
11885 | ||
11886 | if (!found_base) | |
11887 | { | |
11888 | /* We have no valid base address for the ranges | |
11889 | data. */ | |
11890 | complaint (&symfile_complaints, | |
11891 | _("Invalid .debug_ranges data (no base address)")); | |
11892 | return 0; | |
11893 | } | |
11894 | ||
9277c30c UW |
11895 | if (range_beginning > range_end) |
11896 | { | |
11897 | /* Inverted range entries are invalid. */ | |
11898 | complaint (&symfile_complaints, | |
11899 | _("Invalid .debug_ranges data (inverted range)")); | |
11900 | return 0; | |
11901 | } | |
11902 | ||
11903 | /* Empty range entries have no effect. */ | |
11904 | if (range_beginning == range_end) | |
11905 | continue; | |
11906 | ||
43039443 JK |
11907 | range_beginning += base; |
11908 | range_end += base; | |
11909 | ||
01093045 DE |
11910 | /* A not-uncommon case of bad debug info. |
11911 | Don't pollute the addrmap with bad data. */ | |
11912 | if (range_beginning + baseaddr == 0 | |
11913 | && !dwarf2_per_objfile->has_section_at_zero) | |
11914 | { | |
11915 | complaint (&symfile_complaints, | |
11916 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11917 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11918 | continue; |
11919 | } | |
11920 | ||
9277c30c | 11921 | if (ranges_pst != NULL) |
3e29f34a MR |
11922 | { |
11923 | CORE_ADDR lowpc; | |
11924 | CORE_ADDR highpc; | |
11925 | ||
11926 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
11927 | range_beginning + baseaddr); | |
11928 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
11929 | range_end + baseaddr); | |
11930 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
11931 | ranges_pst); | |
11932 | } | |
ff013f42 | 11933 | |
43039443 JK |
11934 | /* FIXME: This is recording everything as a low-high |
11935 | segment of consecutive addresses. We should have a | |
11936 | data structure for discontiguous block ranges | |
11937 | instead. */ | |
11938 | if (! low_set) | |
11939 | { | |
11940 | low = range_beginning; | |
11941 | high = range_end; | |
11942 | low_set = 1; | |
11943 | } | |
11944 | else | |
11945 | { | |
11946 | if (range_beginning < low) | |
11947 | low = range_beginning; | |
11948 | if (range_end > high) | |
11949 | high = range_end; | |
11950 | } | |
11951 | } | |
11952 | ||
11953 | if (! low_set) | |
11954 | /* If the first entry is an end-of-list marker, the range | |
11955 | describes an empty scope, i.e. no instructions. */ | |
11956 | return 0; | |
11957 | ||
11958 | if (low_return) | |
11959 | *low_return = low; | |
11960 | if (high_return) | |
11961 | *high_return = high; | |
11962 | return 1; | |
11963 | } | |
11964 | ||
af34e669 DJ |
11965 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
11966 | are present and valid, otherwise, return 0. Return -1 if the range is | |
11967 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 11968 | |
c906108c | 11969 | static int |
af34e669 | 11970 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
11971 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
11972 | struct partial_symtab *pst) | |
c906108c SS |
11973 | { |
11974 | struct attribute *attr; | |
91da1414 | 11975 | struct attribute *attr_high; |
af34e669 DJ |
11976 | CORE_ADDR low = 0; |
11977 | CORE_ADDR high = 0; | |
11978 | int ret = 0; | |
c906108c | 11979 | |
91da1414 MW |
11980 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
11981 | if (attr_high) | |
af34e669 | 11982 | { |
e142c38c | 11983 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 11984 | if (attr) |
91da1414 | 11985 | { |
31aa7e4e JB |
11986 | low = attr_value_as_address (attr); |
11987 | high = attr_value_as_address (attr_high); | |
11988 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
11989 | high += low; | |
91da1414 | 11990 | } |
af34e669 DJ |
11991 | else |
11992 | /* Found high w/o low attribute. */ | |
11993 | return 0; | |
11994 | ||
11995 | /* Found consecutive range of addresses. */ | |
11996 | ret = 1; | |
11997 | } | |
c906108c | 11998 | else |
af34e669 | 11999 | { |
e142c38c | 12000 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
12001 | if (attr != NULL) |
12002 | { | |
ab435259 DE |
12003 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12004 | We take advantage of the fact that DW_AT_ranges does not appear | |
12005 | in DW_TAG_compile_unit of DWO files. */ | |
12006 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
12007 | unsigned int ranges_offset = (DW_UNSND (attr) | |
12008 | + (need_ranges_base | |
12009 | ? cu->ranges_base | |
12010 | : 0)); | |
2e3cf129 | 12011 | |
af34e669 | 12012 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 12013 | .debug_ranges section. */ |
2e3cf129 | 12014 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 12015 | return 0; |
43039443 | 12016 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
12017 | ret = -1; |
12018 | } | |
12019 | } | |
c906108c | 12020 | |
9373cf26 JK |
12021 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
12022 | if (high <= low) | |
c906108c SS |
12023 | return 0; |
12024 | ||
12025 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
12026 | eliminate duplicate copies of functions and vtables and such. | |
12027 | The linker will arbitrarily choose one and discard the others. | |
12028 | The AT_*_pc values for such functions refer to local labels in | |
12029 | these sections. If the section from that file was discarded, the | |
12030 | labels are not in the output, so the relocs get a value of 0. | |
12031 | If this is a discarded function, mark the pc bounds as invalid, | |
12032 | so that GDB will ignore it. */ | |
72dca2f5 | 12033 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
12034 | return 0; |
12035 | ||
12036 | *lowpc = low; | |
96408a79 SA |
12037 | if (highpc) |
12038 | *highpc = high; | |
af34e669 | 12039 | return ret; |
c906108c SS |
12040 | } |
12041 | ||
b084d499 JB |
12042 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
12043 | its low and high PC addresses. Do nothing if these addresses could not | |
12044 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
12045 | and HIGHPC to the high address if greater than HIGHPC. */ | |
12046 | ||
12047 | static void | |
12048 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
12049 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12050 | struct dwarf2_cu *cu) | |
12051 | { | |
12052 | CORE_ADDR low, high; | |
12053 | struct die_info *child = die->child; | |
12054 | ||
d85a05f0 | 12055 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
12056 | { |
12057 | *lowpc = min (*lowpc, low); | |
12058 | *highpc = max (*highpc, high); | |
12059 | } | |
12060 | ||
12061 | /* If the language does not allow nested subprograms (either inside | |
12062 | subprograms or lexical blocks), we're done. */ | |
12063 | if (cu->language != language_ada) | |
12064 | return; | |
6e70227d | 12065 | |
b084d499 JB |
12066 | /* Check all the children of the given DIE. If it contains nested |
12067 | subprograms, then check their pc bounds. Likewise, we need to | |
12068 | check lexical blocks as well, as they may also contain subprogram | |
12069 | definitions. */ | |
12070 | while (child && child->tag) | |
12071 | { | |
12072 | if (child->tag == DW_TAG_subprogram | |
12073 | || child->tag == DW_TAG_lexical_block) | |
12074 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
12075 | child = sibling_die (child); | |
12076 | } | |
12077 | } | |
12078 | ||
fae299cd DC |
12079 | /* Get the low and high pc's represented by the scope DIE, and store |
12080 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
12081 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
12082 | ||
12083 | static void | |
12084 | get_scope_pc_bounds (struct die_info *die, | |
12085 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12086 | struct dwarf2_cu *cu) | |
12087 | { | |
12088 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
12089 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
12090 | CORE_ADDR current_low, current_high; | |
12091 | ||
d85a05f0 | 12092 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
12093 | { |
12094 | best_low = current_low; | |
12095 | best_high = current_high; | |
12096 | } | |
12097 | else | |
12098 | { | |
12099 | struct die_info *child = die->child; | |
12100 | ||
12101 | while (child && child->tag) | |
12102 | { | |
12103 | switch (child->tag) { | |
12104 | case DW_TAG_subprogram: | |
b084d499 | 12105 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
12106 | break; |
12107 | case DW_TAG_namespace: | |
f55ee35c | 12108 | case DW_TAG_module: |
fae299cd DC |
12109 | /* FIXME: carlton/2004-01-16: Should we do this for |
12110 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
12111 | that current GCC's always emit the DIEs corresponding | |
12112 | to definitions of methods of classes as children of a | |
12113 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
12114 | the DIEs giving the declarations, which could be | |
12115 | anywhere). But I don't see any reason why the | |
12116 | standards says that they have to be there. */ | |
12117 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
12118 | ||
12119 | if (current_low != ((CORE_ADDR) -1)) | |
12120 | { | |
12121 | best_low = min (best_low, current_low); | |
12122 | best_high = max (best_high, current_high); | |
12123 | } | |
12124 | break; | |
12125 | default: | |
0963b4bd | 12126 | /* Ignore. */ |
fae299cd DC |
12127 | break; |
12128 | } | |
12129 | ||
12130 | child = sibling_die (child); | |
12131 | } | |
12132 | } | |
12133 | ||
12134 | *lowpc = best_low; | |
12135 | *highpc = best_high; | |
12136 | } | |
12137 | ||
801e3a5b JB |
12138 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
12139 | in DIE. */ | |
380bca97 | 12140 | |
801e3a5b JB |
12141 | static void |
12142 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
12143 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
12144 | { | |
bb5ed363 | 12145 | struct objfile *objfile = cu->objfile; |
3e29f34a | 12146 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 12147 | struct attribute *attr; |
91da1414 | 12148 | struct attribute *attr_high; |
801e3a5b | 12149 | |
91da1414 MW |
12150 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12151 | if (attr_high) | |
801e3a5b | 12152 | { |
801e3a5b JB |
12153 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
12154 | if (attr) | |
12155 | { | |
31aa7e4e JB |
12156 | CORE_ADDR low = attr_value_as_address (attr); |
12157 | CORE_ADDR high = attr_value_as_address (attr_high); | |
12158 | ||
12159 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12160 | high += low; | |
9a619af0 | 12161 | |
3e29f34a MR |
12162 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
12163 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
12164 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
12165 | } |
12166 | } | |
12167 | ||
12168 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
12169 | if (attr) | |
12170 | { | |
bb5ed363 | 12171 | bfd *obfd = objfile->obfd; |
ab435259 DE |
12172 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12173 | We take advantage of the fact that DW_AT_ranges does not appear | |
12174 | in DW_TAG_compile_unit of DWO files. */ | |
12175 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
12176 | |
12177 | /* The value of the DW_AT_ranges attribute is the offset of the | |
12178 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
12179 | unsigned long offset = (DW_UNSND (attr) |
12180 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 12181 | const gdb_byte *buffer; |
801e3a5b JB |
12182 | |
12183 | /* For some target architectures, but not others, the | |
12184 | read_address function sign-extends the addresses it returns. | |
12185 | To recognize base address selection entries, we need a | |
12186 | mask. */ | |
12187 | unsigned int addr_size = cu->header.addr_size; | |
12188 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12189 | ||
12190 | /* The base address, to which the next pair is relative. Note | |
12191 | that this 'base' is a DWARF concept: most entries in a range | |
12192 | list are relative, to reduce the number of relocs against the | |
12193 | debugging information. This is separate from this function's | |
12194 | 'baseaddr' argument, which GDB uses to relocate debugging | |
12195 | information from a shared library based on the address at | |
12196 | which the library was loaded. */ | |
d00adf39 DE |
12197 | CORE_ADDR base = cu->base_address; |
12198 | int base_known = cu->base_known; | |
801e3a5b | 12199 | |
d62bfeaf | 12200 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 12201 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
12202 | { |
12203 | complaint (&symfile_complaints, | |
12204 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
12205 | offset); | |
12206 | return; | |
12207 | } | |
d62bfeaf | 12208 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
12209 | |
12210 | for (;;) | |
12211 | { | |
12212 | unsigned int bytes_read; | |
12213 | CORE_ADDR start, end; | |
12214 | ||
12215 | start = read_address (obfd, buffer, cu, &bytes_read); | |
12216 | buffer += bytes_read; | |
12217 | end = read_address (obfd, buffer, cu, &bytes_read); | |
12218 | buffer += bytes_read; | |
12219 | ||
12220 | /* Did we find the end of the range list? */ | |
12221 | if (start == 0 && end == 0) | |
12222 | break; | |
12223 | ||
12224 | /* Did we find a base address selection entry? */ | |
12225 | else if ((start & base_select_mask) == base_select_mask) | |
12226 | { | |
12227 | base = end; | |
12228 | base_known = 1; | |
12229 | } | |
12230 | ||
12231 | /* We found an ordinary address range. */ | |
12232 | else | |
12233 | { | |
12234 | if (!base_known) | |
12235 | { | |
12236 | complaint (&symfile_complaints, | |
3e43a32a MS |
12237 | _("Invalid .debug_ranges data " |
12238 | "(no base address)")); | |
801e3a5b JB |
12239 | return; |
12240 | } | |
12241 | ||
9277c30c UW |
12242 | if (start > end) |
12243 | { | |
12244 | /* Inverted range entries are invalid. */ | |
12245 | complaint (&symfile_complaints, | |
12246 | _("Invalid .debug_ranges data " | |
12247 | "(inverted range)")); | |
12248 | return; | |
12249 | } | |
12250 | ||
12251 | /* Empty range entries have no effect. */ | |
12252 | if (start == end) | |
12253 | continue; | |
12254 | ||
01093045 DE |
12255 | start += base + baseaddr; |
12256 | end += base + baseaddr; | |
12257 | ||
12258 | /* A not-uncommon case of bad debug info. | |
12259 | Don't pollute the addrmap with bad data. */ | |
12260 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
12261 | { | |
12262 | complaint (&symfile_complaints, | |
12263 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 12264 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
12265 | continue; |
12266 | } | |
12267 | ||
3e29f34a MR |
12268 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
12269 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
01093045 | 12270 | record_block_range (block, start, end - 1); |
801e3a5b JB |
12271 | } |
12272 | } | |
12273 | } | |
12274 | } | |
12275 | ||
685b1105 JK |
12276 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
12277 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 12278 | |
685b1105 JK |
12279 | static void |
12280 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
12281 | { |
12282 | const char *cs; | |
38360086 | 12283 | int major, minor; |
60d5a603 JK |
12284 | |
12285 | if (cu->producer == NULL) | |
12286 | { | |
12287 | /* For unknown compilers expect their behavior is DWARF version | |
12288 | compliant. | |
12289 | ||
12290 | GCC started to support .debug_types sections by -gdwarf-4 since | |
12291 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
12292 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
12293 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
12294 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 12295 | } |
b1ffba5a | 12296 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 12297 | { |
38360086 MW |
12298 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
12299 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 JK |
12300 | } |
12301 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
12302 | cu->producer_is_icc = 1; | |
12303 | else | |
12304 | { | |
12305 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
12306 | compliant. */ | |
60d5a603 JK |
12307 | } |
12308 | ||
ba919b58 | 12309 | cu->checked_producer = 1; |
685b1105 | 12310 | } |
ba919b58 | 12311 | |
685b1105 JK |
12312 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
12313 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
12314 | during 4.6.0 experimental. */ | |
12315 | ||
12316 | static int | |
12317 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
12318 | { | |
12319 | if (!cu->checked_producer) | |
12320 | check_producer (cu); | |
12321 | ||
12322 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
12323 | } |
12324 | ||
12325 | /* Return the default accessibility type if it is not overriden by | |
12326 | DW_AT_accessibility. */ | |
12327 | ||
12328 | static enum dwarf_access_attribute | |
12329 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
12330 | { | |
12331 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
12332 | { | |
12333 | /* The default DWARF 2 accessibility for members is public, the default | |
12334 | accessibility for inheritance is private. */ | |
12335 | ||
12336 | if (die->tag != DW_TAG_inheritance) | |
12337 | return DW_ACCESS_public; | |
12338 | else | |
12339 | return DW_ACCESS_private; | |
12340 | } | |
12341 | else | |
12342 | { | |
12343 | /* DWARF 3+ defines the default accessibility a different way. The same | |
12344 | rules apply now for DW_TAG_inheritance as for the members and it only | |
12345 | depends on the container kind. */ | |
12346 | ||
12347 | if (die->parent->tag == DW_TAG_class_type) | |
12348 | return DW_ACCESS_private; | |
12349 | else | |
12350 | return DW_ACCESS_public; | |
12351 | } | |
12352 | } | |
12353 | ||
74ac6d43 TT |
12354 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
12355 | offset. If the attribute was not found return 0, otherwise return | |
12356 | 1. If it was found but could not properly be handled, set *OFFSET | |
12357 | to 0. */ | |
12358 | ||
12359 | static int | |
12360 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
12361 | LONGEST *offset) | |
12362 | { | |
12363 | struct attribute *attr; | |
12364 | ||
12365 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
12366 | if (attr != NULL) | |
12367 | { | |
12368 | *offset = 0; | |
12369 | ||
12370 | /* Note that we do not check for a section offset first here. | |
12371 | This is because DW_AT_data_member_location is new in DWARF 4, | |
12372 | so if we see it, we can assume that a constant form is really | |
12373 | a constant and not a section offset. */ | |
12374 | if (attr_form_is_constant (attr)) | |
12375 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
12376 | else if (attr_form_is_section_offset (attr)) | |
12377 | dwarf2_complex_location_expr_complaint (); | |
12378 | else if (attr_form_is_block (attr)) | |
12379 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
12380 | else | |
12381 | dwarf2_complex_location_expr_complaint (); | |
12382 | ||
12383 | return 1; | |
12384 | } | |
12385 | ||
12386 | return 0; | |
12387 | } | |
12388 | ||
c906108c SS |
12389 | /* Add an aggregate field to the field list. */ |
12390 | ||
12391 | static void | |
107d2387 | 12392 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12393 | struct dwarf2_cu *cu) |
6e70227d | 12394 | { |
e7c27a73 | 12395 | struct objfile *objfile = cu->objfile; |
5e2b427d | 12396 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12397 | struct nextfield *new_field; |
12398 | struct attribute *attr; | |
12399 | struct field *fp; | |
15d034d0 | 12400 | const char *fieldname = ""; |
c906108c SS |
12401 | |
12402 | /* Allocate a new field list entry and link it in. */ | |
12403 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 12404 | make_cleanup (xfree, new_field); |
c906108c | 12405 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
12406 | |
12407 | if (die->tag == DW_TAG_inheritance) | |
12408 | { | |
12409 | new_field->next = fip->baseclasses; | |
12410 | fip->baseclasses = new_field; | |
12411 | } | |
12412 | else | |
12413 | { | |
12414 | new_field->next = fip->fields; | |
12415 | fip->fields = new_field; | |
12416 | } | |
c906108c SS |
12417 | fip->nfields++; |
12418 | ||
e142c38c | 12419 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
12420 | if (attr) |
12421 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
12422 | else |
12423 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
12424 | if (new_field->accessibility != DW_ACCESS_public) |
12425 | fip->non_public_fields = 1; | |
60d5a603 | 12426 | |
e142c38c | 12427 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
12428 | if (attr) |
12429 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
12430 | else |
12431 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
12432 | |
12433 | fp = &new_field->field; | |
a9a9bd0f | 12434 | |
e142c38c | 12435 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 12436 | { |
74ac6d43 TT |
12437 | LONGEST offset; |
12438 | ||
a9a9bd0f | 12439 | /* Data member other than a C++ static data member. */ |
6e70227d | 12440 | |
c906108c | 12441 | /* Get type of field. */ |
e7c27a73 | 12442 | fp->type = die_type (die, cu); |
c906108c | 12443 | |
d6a843b5 | 12444 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 12445 | |
c906108c | 12446 | /* Get bit size of field (zero if none). */ |
e142c38c | 12447 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
12448 | if (attr) |
12449 | { | |
12450 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
12451 | } | |
12452 | else | |
12453 | { | |
12454 | FIELD_BITSIZE (*fp) = 0; | |
12455 | } | |
12456 | ||
12457 | /* Get bit offset of field. */ | |
74ac6d43 TT |
12458 | if (handle_data_member_location (die, cu, &offset)) |
12459 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 12460 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
12461 | if (attr) |
12462 | { | |
5e2b427d | 12463 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
12464 | { |
12465 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
12466 | additional bit offset from the MSB of the containing |
12467 | anonymous object to the MSB of the field. We don't | |
12468 | have to do anything special since we don't need to | |
12469 | know the size of the anonymous object. */ | |
f41f5e61 | 12470 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
12471 | } |
12472 | else | |
12473 | { | |
12474 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
12475 | MSB of the anonymous object, subtract off the number of |
12476 | bits from the MSB of the field to the MSB of the | |
12477 | object, and then subtract off the number of bits of | |
12478 | the field itself. The result is the bit offset of | |
12479 | the LSB of the field. */ | |
c906108c SS |
12480 | int anonymous_size; |
12481 | int bit_offset = DW_UNSND (attr); | |
12482 | ||
e142c38c | 12483 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12484 | if (attr) |
12485 | { | |
12486 | /* The size of the anonymous object containing | |
12487 | the bit field is explicit, so use the | |
12488 | indicated size (in bytes). */ | |
12489 | anonymous_size = DW_UNSND (attr); | |
12490 | } | |
12491 | else | |
12492 | { | |
12493 | /* The size of the anonymous object containing | |
12494 | the bit field must be inferred from the type | |
12495 | attribute of the data member containing the | |
12496 | bit field. */ | |
12497 | anonymous_size = TYPE_LENGTH (fp->type); | |
12498 | } | |
f41f5e61 PA |
12499 | SET_FIELD_BITPOS (*fp, |
12500 | (FIELD_BITPOS (*fp) | |
12501 | + anonymous_size * bits_per_byte | |
12502 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
12503 | } |
12504 | } | |
12505 | ||
12506 | /* Get name of field. */ | |
39cbfefa DJ |
12507 | fieldname = dwarf2_name (die, cu); |
12508 | if (fieldname == NULL) | |
12509 | fieldname = ""; | |
d8151005 DJ |
12510 | |
12511 | /* The name is already allocated along with this objfile, so we don't | |
12512 | need to duplicate it for the type. */ | |
12513 | fp->name = fieldname; | |
c906108c SS |
12514 | |
12515 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 12516 | pointer or virtual base class pointer) to private. */ |
e142c38c | 12517 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 12518 | { |
d48cc9dd | 12519 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
12520 | new_field->accessibility = DW_ACCESS_private; |
12521 | fip->non_public_fields = 1; | |
12522 | } | |
12523 | } | |
a9a9bd0f | 12524 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 12525 | { |
a9a9bd0f DC |
12526 | /* C++ static member. */ |
12527 | ||
12528 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
12529 | is a declaration, but all versions of G++ as of this writing | |
12530 | (so through at least 3.2.1) incorrectly generate | |
12531 | DW_TAG_variable tags. */ | |
6e70227d | 12532 | |
ff355380 | 12533 | const char *physname; |
c906108c | 12534 | |
a9a9bd0f | 12535 | /* Get name of field. */ |
39cbfefa DJ |
12536 | fieldname = dwarf2_name (die, cu); |
12537 | if (fieldname == NULL) | |
c906108c SS |
12538 | return; |
12539 | ||
254e6b9e | 12540 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
12541 | if (attr |
12542 | /* Only create a symbol if this is an external value. | |
12543 | new_symbol checks this and puts the value in the global symbol | |
12544 | table, which we want. If it is not external, new_symbol | |
12545 | will try to put the value in cu->list_in_scope which is wrong. */ | |
12546 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
12547 | { |
12548 | /* A static const member, not much different than an enum as far as | |
12549 | we're concerned, except that we can support more types. */ | |
12550 | new_symbol (die, NULL, cu); | |
12551 | } | |
12552 | ||
2df3850c | 12553 | /* Get physical name. */ |
ff355380 | 12554 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 12555 | |
d8151005 DJ |
12556 | /* The name is already allocated along with this objfile, so we don't |
12557 | need to duplicate it for the type. */ | |
12558 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 12559 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 12560 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
12561 | } |
12562 | else if (die->tag == DW_TAG_inheritance) | |
12563 | { | |
74ac6d43 | 12564 | LONGEST offset; |
d4b96c9a | 12565 | |
74ac6d43 TT |
12566 | /* C++ base class field. */ |
12567 | if (handle_data_member_location (die, cu, &offset)) | |
12568 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 12569 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 12570 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
12571 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
12572 | fip->nbaseclasses++; | |
12573 | } | |
12574 | } | |
12575 | ||
98751a41 JK |
12576 | /* Add a typedef defined in the scope of the FIP's class. */ |
12577 | ||
12578 | static void | |
12579 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
12580 | struct dwarf2_cu *cu) | |
6e70227d | 12581 | { |
98751a41 | 12582 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
12583 | struct typedef_field_list *new_field; |
12584 | struct attribute *attr; | |
12585 | struct typedef_field *fp; | |
12586 | char *fieldname = ""; | |
12587 | ||
12588 | /* Allocate a new field list entry and link it in. */ | |
12589 | new_field = xzalloc (sizeof (*new_field)); | |
12590 | make_cleanup (xfree, new_field); | |
12591 | ||
12592 | gdb_assert (die->tag == DW_TAG_typedef); | |
12593 | ||
12594 | fp = &new_field->field; | |
12595 | ||
12596 | /* Get name of field. */ | |
12597 | fp->name = dwarf2_name (die, cu); | |
12598 | if (fp->name == NULL) | |
12599 | return; | |
12600 | ||
12601 | fp->type = read_type_die (die, cu); | |
12602 | ||
12603 | new_field->next = fip->typedef_field_list; | |
12604 | fip->typedef_field_list = new_field; | |
12605 | fip->typedef_field_list_count++; | |
12606 | } | |
12607 | ||
c906108c SS |
12608 | /* Create the vector of fields, and attach it to the type. */ |
12609 | ||
12610 | static void | |
fba45db2 | 12611 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12612 | struct dwarf2_cu *cu) |
c906108c SS |
12613 | { |
12614 | int nfields = fip->nfields; | |
12615 | ||
12616 | /* Record the field count, allocate space for the array of fields, | |
12617 | and create blank accessibility bitfields if necessary. */ | |
12618 | TYPE_NFIELDS (type) = nfields; | |
12619 | TYPE_FIELDS (type) = (struct field *) | |
12620 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
12621 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
12622 | ||
b4ba55a1 | 12623 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
12624 | { |
12625 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12626 | ||
12627 | TYPE_FIELD_PRIVATE_BITS (type) = | |
12628 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12629 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
12630 | ||
12631 | TYPE_FIELD_PROTECTED_BITS (type) = | |
12632 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12633 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
12634 | ||
774b6a14 TT |
12635 | TYPE_FIELD_IGNORE_BITS (type) = |
12636 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12637 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
12638 | } |
12639 | ||
12640 | /* If the type has baseclasses, allocate and clear a bit vector for | |
12641 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 12642 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
12643 | { |
12644 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 12645 | unsigned char *pointer; |
c906108c SS |
12646 | |
12647 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
12648 | pointer = TYPE_ALLOC (type, num_bytes); |
12649 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
12650 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
12651 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
12652 | } | |
12653 | ||
3e43a32a MS |
12654 | /* Copy the saved-up fields into the field vector. Start from the head of |
12655 | the list, adding to the tail of the field array, so that they end up in | |
12656 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
12657 | while (nfields-- > 0) |
12658 | { | |
7d0ccb61 DJ |
12659 | struct nextfield *fieldp; |
12660 | ||
12661 | if (fip->fields) | |
12662 | { | |
12663 | fieldp = fip->fields; | |
12664 | fip->fields = fieldp->next; | |
12665 | } | |
12666 | else | |
12667 | { | |
12668 | fieldp = fip->baseclasses; | |
12669 | fip->baseclasses = fieldp->next; | |
12670 | } | |
12671 | ||
12672 | TYPE_FIELD (type, nfields) = fieldp->field; | |
12673 | switch (fieldp->accessibility) | |
c906108c | 12674 | { |
c5aa993b | 12675 | case DW_ACCESS_private: |
b4ba55a1 JB |
12676 | if (cu->language != language_ada) |
12677 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 12678 | break; |
c906108c | 12679 | |
c5aa993b | 12680 | case DW_ACCESS_protected: |
b4ba55a1 JB |
12681 | if (cu->language != language_ada) |
12682 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 12683 | break; |
c906108c | 12684 | |
c5aa993b JM |
12685 | case DW_ACCESS_public: |
12686 | break; | |
c906108c | 12687 | |
c5aa993b JM |
12688 | default: |
12689 | /* Unknown accessibility. Complain and treat it as public. */ | |
12690 | { | |
e2e0b3e5 | 12691 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 12692 | fieldp->accessibility); |
c5aa993b JM |
12693 | } |
12694 | break; | |
c906108c SS |
12695 | } |
12696 | if (nfields < fip->nbaseclasses) | |
12697 | { | |
7d0ccb61 | 12698 | switch (fieldp->virtuality) |
c906108c | 12699 | { |
c5aa993b JM |
12700 | case DW_VIRTUALITY_virtual: |
12701 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 12702 | if (cu->language == language_ada) |
a73c6dcd | 12703 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
12704 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
12705 | break; | |
c906108c SS |
12706 | } |
12707 | } | |
c906108c SS |
12708 | } |
12709 | } | |
12710 | ||
7d27a96d TT |
12711 | /* Return true if this member function is a constructor, false |
12712 | otherwise. */ | |
12713 | ||
12714 | static int | |
12715 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
12716 | { | |
12717 | const char *fieldname; | |
12718 | const char *typename; | |
12719 | int len; | |
12720 | ||
12721 | if (die->parent == NULL) | |
12722 | return 0; | |
12723 | ||
12724 | if (die->parent->tag != DW_TAG_structure_type | |
12725 | && die->parent->tag != DW_TAG_union_type | |
12726 | && die->parent->tag != DW_TAG_class_type) | |
12727 | return 0; | |
12728 | ||
12729 | fieldname = dwarf2_name (die, cu); | |
12730 | typename = dwarf2_name (die->parent, cu); | |
12731 | if (fieldname == NULL || typename == NULL) | |
12732 | return 0; | |
12733 | ||
12734 | len = strlen (fieldname); | |
12735 | return (strncmp (fieldname, typename, len) == 0 | |
12736 | && (typename[len] == '\0' || typename[len] == '<')); | |
12737 | } | |
12738 | ||
c906108c SS |
12739 | /* Add a member function to the proper fieldlist. */ |
12740 | ||
12741 | static void | |
107d2387 | 12742 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12743 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 12744 | { |
e7c27a73 | 12745 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12746 | struct attribute *attr; |
12747 | struct fnfieldlist *flp; | |
12748 | int i; | |
12749 | struct fn_field *fnp; | |
15d034d0 | 12750 | const char *fieldname; |
c906108c | 12751 | struct nextfnfield *new_fnfield; |
f792889a | 12752 | struct type *this_type; |
60d5a603 | 12753 | enum dwarf_access_attribute accessibility; |
c906108c | 12754 | |
b4ba55a1 | 12755 | if (cu->language == language_ada) |
a73c6dcd | 12756 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 12757 | |
2df3850c | 12758 | /* Get name of member function. */ |
39cbfefa DJ |
12759 | fieldname = dwarf2_name (die, cu); |
12760 | if (fieldname == NULL) | |
2df3850c | 12761 | return; |
c906108c | 12762 | |
c906108c SS |
12763 | /* Look up member function name in fieldlist. */ |
12764 | for (i = 0; i < fip->nfnfields; i++) | |
12765 | { | |
27bfe10e | 12766 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
12767 | break; |
12768 | } | |
12769 | ||
12770 | /* Create new list element if necessary. */ | |
12771 | if (i < fip->nfnfields) | |
12772 | flp = &fip->fnfieldlists[i]; | |
12773 | else | |
12774 | { | |
12775 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
12776 | { | |
12777 | fip->fnfieldlists = (struct fnfieldlist *) | |
12778 | xrealloc (fip->fnfieldlists, | |
12779 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 12780 | * sizeof (struct fnfieldlist)); |
c906108c | 12781 | if (fip->nfnfields == 0) |
c13c43fd | 12782 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
12783 | } |
12784 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
12785 | flp->name = fieldname; | |
12786 | flp->length = 0; | |
12787 | flp->head = NULL; | |
3da10d80 | 12788 | i = fip->nfnfields++; |
c906108c SS |
12789 | } |
12790 | ||
12791 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 12792 | entry. */ |
c906108c | 12793 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 12794 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
12795 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
12796 | new_fnfield->next = flp->head; | |
12797 | flp->head = new_fnfield; | |
12798 | flp->length++; | |
12799 | ||
12800 | /* Fill in the member function field info. */ | |
12801 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
12802 | |
12803 | /* Delay processing of the physname until later. */ | |
12804 | if (cu->language == language_cplus || cu->language == language_java) | |
12805 | { | |
12806 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
12807 | die, cu); | |
12808 | } | |
12809 | else | |
12810 | { | |
1d06ead6 | 12811 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
12812 | fnp->physname = physname ? physname : ""; |
12813 | } | |
12814 | ||
c906108c | 12815 | fnp->type = alloc_type (objfile); |
f792889a DJ |
12816 | this_type = read_type_die (die, cu); |
12817 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 12818 | { |
f792889a | 12819 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 12820 | |
f792889a | 12821 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
12822 | of the method itself (TYPE_CODE_METHOD). */ |
12823 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
12824 | TYPE_TARGET_TYPE (this_type), |
12825 | TYPE_FIELDS (this_type), | |
12826 | TYPE_NFIELDS (this_type), | |
12827 | TYPE_VARARGS (this_type)); | |
c906108c SS |
12828 | |
12829 | /* Handle static member functions. | |
c5aa993b | 12830 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
12831 | member functions. G++ helps GDB by marking the first |
12832 | parameter for non-static member functions (which is the this | |
12833 | pointer) as artificial. We obtain this information from | |
12834 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 12835 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
12836 | fnp->voffset = VOFFSET_STATIC; |
12837 | } | |
12838 | else | |
e2e0b3e5 | 12839 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 12840 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
12841 | |
12842 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 12843 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 12844 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 12845 | |
3e43a32a MS |
12846 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
12847 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
12848 | |
12849 | /* Get accessibility. */ | |
e142c38c | 12850 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 12851 | if (attr) |
60d5a603 JK |
12852 | accessibility = DW_UNSND (attr); |
12853 | else | |
12854 | accessibility = dwarf2_default_access_attribute (die, cu); | |
12855 | switch (accessibility) | |
c906108c | 12856 | { |
60d5a603 JK |
12857 | case DW_ACCESS_private: |
12858 | fnp->is_private = 1; | |
12859 | break; | |
12860 | case DW_ACCESS_protected: | |
12861 | fnp->is_protected = 1; | |
12862 | break; | |
c906108c SS |
12863 | } |
12864 | ||
b02dede2 | 12865 | /* Check for artificial methods. */ |
e142c38c | 12866 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
12867 | if (attr && DW_UNSND (attr) != 0) |
12868 | fnp->is_artificial = 1; | |
12869 | ||
7d27a96d TT |
12870 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
12871 | ||
0d564a31 | 12872 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
12873 | function. For older versions of GCC, this is an offset in the |
12874 | appropriate virtual table, as specified by DW_AT_containing_type. | |
12875 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
12876 | to the object address. */ |
12877 | ||
e142c38c | 12878 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 12879 | if (attr) |
8e19ed76 | 12880 | { |
aec5aa8b | 12881 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 12882 | { |
aec5aa8b TT |
12883 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
12884 | { | |
12885 | /* Old-style GCC. */ | |
12886 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
12887 | } | |
12888 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12889 | || (DW_BLOCK (attr)->size > 1 | |
12890 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
12891 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
12892 | { | |
12893 | struct dwarf_block blk; | |
12894 | int offset; | |
12895 | ||
12896 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12897 | ? 1 : 2); | |
12898 | blk.size = DW_BLOCK (attr)->size - offset; | |
12899 | blk.data = DW_BLOCK (attr)->data + offset; | |
12900 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
12901 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
12902 | dwarf2_complex_location_expr_complaint (); | |
12903 | else | |
12904 | fnp->voffset /= cu->header.addr_size; | |
12905 | fnp->voffset += 2; | |
12906 | } | |
12907 | else | |
12908 | dwarf2_complex_location_expr_complaint (); | |
12909 | ||
12910 | if (!fnp->fcontext) | |
12911 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
12912 | } | |
3690dd37 | 12913 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 12914 | { |
4d3c2250 | 12915 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
12916 | } |
12917 | else | |
12918 | { | |
4d3c2250 KB |
12919 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
12920 | fieldname); | |
8e19ed76 | 12921 | } |
0d564a31 | 12922 | } |
d48cc9dd DJ |
12923 | else |
12924 | { | |
12925 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
12926 | if (attr && DW_UNSND (attr)) | |
12927 | { | |
12928 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
12929 | complaint (&symfile_complaints, | |
3e43a32a MS |
12930 | _("Member function \"%s\" (offset %d) is virtual " |
12931 | "but the vtable offset is not specified"), | |
b64f50a1 | 12932 | fieldname, die->offset.sect_off); |
9655fd1a | 12933 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
12934 | TYPE_CPLUS_DYNAMIC (type) = 1; |
12935 | } | |
12936 | } | |
c906108c SS |
12937 | } |
12938 | ||
12939 | /* Create the vector of member function fields, and attach it to the type. */ | |
12940 | ||
12941 | static void | |
fba45db2 | 12942 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12943 | struct dwarf2_cu *cu) |
c906108c SS |
12944 | { |
12945 | struct fnfieldlist *flp; | |
c906108c SS |
12946 | int i; |
12947 | ||
b4ba55a1 | 12948 | if (cu->language == language_ada) |
a73c6dcd | 12949 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 12950 | |
c906108c SS |
12951 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
12952 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
12953 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
12954 | ||
12955 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
12956 | { | |
12957 | struct nextfnfield *nfp = flp->head; | |
12958 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
12959 | int k; | |
12960 | ||
12961 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
12962 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
12963 | fn_flp->fn_fields = (struct fn_field *) | |
12964 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
12965 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 12966 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
12967 | } |
12968 | ||
12969 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
12970 | } |
12971 | ||
1168df01 JB |
12972 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
12973 | language, zero otherwise. */ | |
12974 | static int | |
12975 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
12976 | { | |
12977 | static const char vptr[] = "_vptr"; | |
987504bb | 12978 | static const char vtable[] = "vtable"; |
1168df01 | 12979 | |
987504bb JJ |
12980 | /* Look for the C++ and Java forms of the vtable. */ |
12981 | if ((cu->language == language_java | |
12982 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
12983 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
12984 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
12985 | return 1; |
12986 | ||
12987 | return 0; | |
12988 | } | |
12989 | ||
c0dd20ea | 12990 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
12991 | functions, with the ABI-specified layout. If TYPE describes |
12992 | such a structure, smash it into a member function type. | |
61049d3b DJ |
12993 | |
12994 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
12995 | This is GCC PR debug/28767. */ | |
c0dd20ea | 12996 | |
0b92b5bb TT |
12997 | static void |
12998 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 12999 | { |
09e2d7c7 | 13000 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
13001 | |
13002 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
13003 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
13004 | return; | |
c0dd20ea DJ |
13005 | |
13006 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
13007 | if (TYPE_FIELD_NAME (type, 0) == NULL |
13008 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
13009 | || TYPE_FIELD_NAME (type, 1) == NULL | |
13010 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
13011 | return; | |
c0dd20ea DJ |
13012 | |
13013 | /* Find the type of the method. */ | |
0b92b5bb | 13014 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
13015 | if (pfn_type == NULL |
13016 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
13017 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 13018 | return; |
c0dd20ea DJ |
13019 | |
13020 | /* Look for the "this" argument. */ | |
13021 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
13022 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 13023 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 13024 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 13025 | return; |
c0dd20ea | 13026 | |
09e2d7c7 | 13027 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 13028 | new_type = alloc_type (objfile); |
09e2d7c7 | 13029 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
13030 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
13031 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 13032 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 13033 | } |
1168df01 | 13034 | |
685b1105 JK |
13035 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
13036 | (icc). */ | |
13037 | ||
13038 | static int | |
13039 | producer_is_icc (struct dwarf2_cu *cu) | |
13040 | { | |
13041 | if (!cu->checked_producer) | |
13042 | check_producer (cu); | |
13043 | ||
13044 | return cu->producer_is_icc; | |
13045 | } | |
13046 | ||
c906108c | 13047 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
13048 | (definition) to create a type for the structure or union. Fill in |
13049 | the type's name and general properties; the members will not be | |
83655187 DE |
13050 | processed until process_structure_scope. A symbol table entry for |
13051 | the type will also not be done until process_structure_scope (assuming | |
13052 | the type has a name). | |
c906108c | 13053 | |
c767944b DJ |
13054 | NOTE: we need to call these functions regardless of whether or not the |
13055 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 13056 | structure or union. This gets the type entered into our set of |
83655187 | 13057 | user defined types. */ |
c906108c | 13058 | |
f792889a | 13059 | static struct type * |
134d01f1 | 13060 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13061 | { |
e7c27a73 | 13062 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13063 | struct type *type; |
13064 | struct attribute *attr; | |
15d034d0 | 13065 | const char *name; |
c906108c | 13066 | |
348e048f DE |
13067 | /* If the definition of this type lives in .debug_types, read that type. |
13068 | Don't follow DW_AT_specification though, that will take us back up | |
13069 | the chain and we want to go down. */ | |
45e58e77 | 13070 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13071 | if (attr) |
13072 | { | |
ac9ec31b | 13073 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13074 | |
ac9ec31b | 13075 | /* The type's CU may not be the same as CU. |
02142a6c | 13076 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13077 | return set_die_type (die, type, cu); |
13078 | } | |
13079 | ||
c0dd20ea | 13080 | type = alloc_type (objfile); |
c906108c | 13081 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 13082 | |
39cbfefa DJ |
13083 | name = dwarf2_name (die, cu); |
13084 | if (name != NULL) | |
c906108c | 13085 | { |
987504bb JJ |
13086 | if (cu->language == language_cplus |
13087 | || cu->language == language_java) | |
63d06c5c | 13088 | { |
15d034d0 | 13089 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
13090 | |
13091 | /* dwarf2_full_name might have already finished building the DIE's | |
13092 | type. If so, there is no need to continue. */ | |
13093 | if (get_die_type (die, cu) != NULL) | |
13094 | return get_die_type (die, cu); | |
13095 | ||
13096 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
13097 | if (die->tag == DW_TAG_structure_type |
13098 | || die->tag == DW_TAG_class_type) | |
13099 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
13100 | } |
13101 | else | |
13102 | { | |
d8151005 DJ |
13103 | /* The name is already allocated along with this objfile, so |
13104 | we don't need to duplicate it for the type. */ | |
7d455152 | 13105 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
13106 | if (die->tag == DW_TAG_class_type) |
13107 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 13108 | } |
c906108c SS |
13109 | } |
13110 | ||
13111 | if (die->tag == DW_TAG_structure_type) | |
13112 | { | |
13113 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
13114 | } | |
13115 | else if (die->tag == DW_TAG_union_type) | |
13116 | { | |
13117 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
13118 | } | |
13119 | else | |
13120 | { | |
4753d33b | 13121 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
13122 | } |
13123 | ||
0cc2414c TT |
13124 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
13125 | TYPE_DECLARED_CLASS (type) = 1; | |
13126 | ||
e142c38c | 13127 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13128 | if (attr) |
13129 | { | |
13130 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13131 | } | |
13132 | else | |
13133 | { | |
13134 | TYPE_LENGTH (type) = 0; | |
13135 | } | |
13136 | ||
422b1cb0 | 13137 | if (producer_is_icc (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 JK |
13138 | { |
13139 | /* ICC does not output the required DW_AT_declaration | |
13140 | on incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 13141 | TYPE_STUB (type) = 1; |
685b1105 JK |
13142 | } |
13143 | else | |
13144 | TYPE_STUB_SUPPORTED (type) = 1; | |
13145 | ||
dc718098 | 13146 | if (die_is_declaration (die, cu)) |
876cecd0 | 13147 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
13148 | else if (attr == NULL && die->child == NULL |
13149 | && producer_is_realview (cu->producer)) | |
13150 | /* RealView does not output the required DW_AT_declaration | |
13151 | on incomplete types. */ | |
13152 | TYPE_STUB (type) = 1; | |
dc718098 | 13153 | |
c906108c SS |
13154 | /* We need to add the type field to the die immediately so we don't |
13155 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 13156 | type within the structure itself. */ |
1c379e20 | 13157 | set_die_type (die, type, cu); |
c906108c | 13158 | |
7e314c57 JK |
13159 | /* set_die_type should be already done. */ |
13160 | set_descriptive_type (type, die, cu); | |
13161 | ||
c767944b DJ |
13162 | return type; |
13163 | } | |
13164 | ||
13165 | /* Finish creating a structure or union type, including filling in | |
13166 | its members and creating a symbol for it. */ | |
13167 | ||
13168 | static void | |
13169 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13170 | { | |
13171 | struct objfile *objfile = cu->objfile; | |
ca040673 | 13172 | struct die_info *child_die; |
c767944b DJ |
13173 | struct type *type; |
13174 | ||
13175 | type = get_die_type (die, cu); | |
13176 | if (type == NULL) | |
13177 | type = read_structure_type (die, cu); | |
13178 | ||
e142c38c | 13179 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
13180 | { |
13181 | struct field_info fi; | |
34eaf542 | 13182 | VEC (symbolp) *template_args = NULL; |
c767944b | 13183 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
13184 | |
13185 | memset (&fi, 0, sizeof (struct field_info)); | |
13186 | ||
639d11d3 | 13187 | child_die = die->child; |
c906108c SS |
13188 | |
13189 | while (child_die && child_die->tag) | |
13190 | { | |
a9a9bd0f DC |
13191 | if (child_die->tag == DW_TAG_member |
13192 | || child_die->tag == DW_TAG_variable) | |
c906108c | 13193 | { |
a9a9bd0f DC |
13194 | /* NOTE: carlton/2002-11-05: A C++ static data member |
13195 | should be a DW_TAG_member that is a declaration, but | |
13196 | all versions of G++ as of this writing (so through at | |
13197 | least 3.2.1) incorrectly generate DW_TAG_variable | |
13198 | tags for them instead. */ | |
e7c27a73 | 13199 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13200 | } |
8713b1b1 | 13201 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 13202 | { |
0963b4bd | 13203 | /* C++ member function. */ |
e7c27a73 | 13204 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
13205 | } |
13206 | else if (child_die->tag == DW_TAG_inheritance) | |
13207 | { | |
13208 | /* C++ base class field. */ | |
e7c27a73 | 13209 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13210 | } |
98751a41 JK |
13211 | else if (child_die->tag == DW_TAG_typedef) |
13212 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
13213 | else if (child_die->tag == DW_TAG_template_type_param |
13214 | || child_die->tag == DW_TAG_template_value_param) | |
13215 | { | |
13216 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13217 | ||
f1078f66 DJ |
13218 | if (arg != NULL) |
13219 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
13220 | } |
13221 | ||
c906108c SS |
13222 | child_die = sibling_die (child_die); |
13223 | } | |
13224 | ||
34eaf542 TT |
13225 | /* Attach template arguments to type. */ |
13226 | if (! VEC_empty (symbolp, template_args)) | |
13227 | { | |
13228 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
13229 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13230 | = VEC_length (symbolp, template_args); | |
13231 | TYPE_TEMPLATE_ARGUMENTS (type) | |
13232 | = obstack_alloc (&objfile->objfile_obstack, | |
13233 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13234 | * sizeof (struct symbol *))); | |
13235 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
13236 | VEC_address (symbolp, template_args), | |
13237 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13238 | * sizeof (struct symbol *))); | |
13239 | VEC_free (symbolp, template_args); | |
13240 | } | |
13241 | ||
c906108c SS |
13242 | /* Attach fields and member functions to the type. */ |
13243 | if (fi.nfields) | |
e7c27a73 | 13244 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
13245 | if (fi.nfnfields) |
13246 | { | |
e7c27a73 | 13247 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 13248 | |
c5aa993b | 13249 | /* Get the type which refers to the base class (possibly this |
c906108c | 13250 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
13251 | class from the DW_AT_containing_type attribute. This use of |
13252 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 13253 | |
e142c38c | 13254 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 13255 | { |
e7c27a73 | 13256 | struct type *t = die_containing_type (die, cu); |
c906108c | 13257 | |
ae6ae975 | 13258 | set_type_vptr_basetype (type, t); |
c906108c SS |
13259 | if (type == t) |
13260 | { | |
c906108c SS |
13261 | int i; |
13262 | ||
13263 | /* Our own class provides vtbl ptr. */ | |
13264 | for (i = TYPE_NFIELDS (t) - 1; | |
13265 | i >= TYPE_N_BASECLASSES (t); | |
13266 | --i) | |
13267 | { | |
0d5cff50 | 13268 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 13269 | |
1168df01 | 13270 | if (is_vtable_name (fieldname, cu)) |
c906108c | 13271 | { |
ae6ae975 | 13272 | set_type_vptr_fieldno (type, i); |
c906108c SS |
13273 | break; |
13274 | } | |
13275 | } | |
13276 | ||
13277 | /* Complain if virtual function table field not found. */ | |
13278 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 13279 | complaint (&symfile_complaints, |
3e43a32a MS |
13280 | _("virtual function table pointer " |
13281 | "not found when defining class '%s'"), | |
4d3c2250 KB |
13282 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
13283 | ""); | |
c906108c SS |
13284 | } |
13285 | else | |
13286 | { | |
ae6ae975 | 13287 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
13288 | } |
13289 | } | |
f6235d4c EZ |
13290 | else if (cu->producer |
13291 | && strncmp (cu->producer, | |
13292 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
13293 | { | |
13294 | /* The IBM XLC compiler does not provide direct indication | |
13295 | of the containing type, but the vtable pointer is | |
13296 | always named __vfp. */ | |
13297 | ||
13298 | int i; | |
13299 | ||
13300 | for (i = TYPE_NFIELDS (type) - 1; | |
13301 | i >= TYPE_N_BASECLASSES (type); | |
13302 | --i) | |
13303 | { | |
13304 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
13305 | { | |
ae6ae975 DE |
13306 | set_type_vptr_fieldno (type, i); |
13307 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
13308 | break; |
13309 | } | |
13310 | } | |
13311 | } | |
c906108c | 13312 | } |
98751a41 JK |
13313 | |
13314 | /* Copy fi.typedef_field_list linked list elements content into the | |
13315 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
13316 | if (fi.typedef_field_list) | |
13317 | { | |
13318 | int i = fi.typedef_field_list_count; | |
13319 | ||
a0d7a4ff | 13320 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
13321 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
13322 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
13323 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
13324 | ||
13325 | /* Reverse the list order to keep the debug info elements order. */ | |
13326 | while (--i >= 0) | |
13327 | { | |
13328 | struct typedef_field *dest, *src; | |
6e70227d | 13329 | |
98751a41 JK |
13330 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
13331 | src = &fi.typedef_field_list->field; | |
13332 | fi.typedef_field_list = fi.typedef_field_list->next; | |
13333 | *dest = *src; | |
13334 | } | |
13335 | } | |
c767944b DJ |
13336 | |
13337 | do_cleanups (back_to); | |
eb2a6f42 TT |
13338 | |
13339 | if (HAVE_CPLUS_STRUCT (type)) | |
13340 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 13341 | } |
63d06c5c | 13342 | |
bb5ed363 | 13343 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 13344 | |
90aeadfc DC |
13345 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
13346 | snapshots) has been known to create a die giving a declaration | |
13347 | for a class that has, as a child, a die giving a definition for a | |
13348 | nested class. So we have to process our children even if the | |
13349 | current die is a declaration. Normally, of course, a declaration | |
13350 | won't have any children at all. */ | |
134d01f1 | 13351 | |
ca040673 DE |
13352 | child_die = die->child; |
13353 | ||
90aeadfc DC |
13354 | while (child_die != NULL && child_die->tag) |
13355 | { | |
13356 | if (child_die->tag == DW_TAG_member | |
13357 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
13358 | || child_die->tag == DW_TAG_inheritance |
13359 | || child_die->tag == DW_TAG_template_value_param | |
13360 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 13361 | { |
90aeadfc | 13362 | /* Do nothing. */ |
134d01f1 | 13363 | } |
90aeadfc DC |
13364 | else |
13365 | process_die (child_die, cu); | |
134d01f1 | 13366 | |
90aeadfc | 13367 | child_die = sibling_die (child_die); |
134d01f1 DJ |
13368 | } |
13369 | ||
fa4028e9 JB |
13370 | /* Do not consider external references. According to the DWARF standard, |
13371 | these DIEs are identified by the fact that they have no byte_size | |
13372 | attribute, and a declaration attribute. */ | |
13373 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
13374 | || !die_is_declaration (die, cu)) | |
c767944b | 13375 | new_symbol (die, type, cu); |
134d01f1 DJ |
13376 | } |
13377 | ||
55426c9d JB |
13378 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
13379 | update TYPE using some information only available in DIE's children. */ | |
13380 | ||
13381 | static void | |
13382 | update_enumeration_type_from_children (struct die_info *die, | |
13383 | struct type *type, | |
13384 | struct dwarf2_cu *cu) | |
13385 | { | |
13386 | struct obstack obstack; | |
60f7655a | 13387 | struct die_info *child_die; |
55426c9d JB |
13388 | int unsigned_enum = 1; |
13389 | int flag_enum = 1; | |
13390 | ULONGEST mask = 0; | |
13391 | struct cleanup *old_chain; | |
13392 | ||
13393 | obstack_init (&obstack); | |
13394 | old_chain = make_cleanup_obstack_free (&obstack); | |
13395 | ||
60f7655a DE |
13396 | for (child_die = die->child; |
13397 | child_die != NULL && child_die->tag; | |
13398 | child_die = sibling_die (child_die)) | |
55426c9d JB |
13399 | { |
13400 | struct attribute *attr; | |
13401 | LONGEST value; | |
13402 | const gdb_byte *bytes; | |
13403 | struct dwarf2_locexpr_baton *baton; | |
13404 | const char *name; | |
60f7655a | 13405 | |
55426c9d JB |
13406 | if (child_die->tag != DW_TAG_enumerator) |
13407 | continue; | |
13408 | ||
13409 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
13410 | if (attr == NULL) | |
13411 | continue; | |
13412 | ||
13413 | name = dwarf2_name (child_die, cu); | |
13414 | if (name == NULL) | |
13415 | name = "<anonymous enumerator>"; | |
13416 | ||
13417 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
13418 | &value, &bytes, &baton); | |
13419 | if (value < 0) | |
13420 | { | |
13421 | unsigned_enum = 0; | |
13422 | flag_enum = 0; | |
13423 | } | |
13424 | else if ((mask & value) != 0) | |
13425 | flag_enum = 0; | |
13426 | else | |
13427 | mask |= value; | |
13428 | ||
13429 | /* If we already know that the enum type is neither unsigned, nor | |
13430 | a flag type, no need to look at the rest of the enumerates. */ | |
13431 | if (!unsigned_enum && !flag_enum) | |
13432 | break; | |
55426c9d JB |
13433 | } |
13434 | ||
13435 | if (unsigned_enum) | |
13436 | TYPE_UNSIGNED (type) = 1; | |
13437 | if (flag_enum) | |
13438 | TYPE_FLAG_ENUM (type) = 1; | |
13439 | ||
13440 | do_cleanups (old_chain); | |
13441 | } | |
13442 | ||
134d01f1 DJ |
13443 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
13444 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 13445 | |
f792889a | 13446 | static struct type * |
134d01f1 | 13447 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13448 | { |
e7c27a73 | 13449 | struct objfile *objfile = cu->objfile; |
c906108c | 13450 | struct type *type; |
c906108c | 13451 | struct attribute *attr; |
0114d602 | 13452 | const char *name; |
134d01f1 | 13453 | |
348e048f DE |
13454 | /* If the definition of this type lives in .debug_types, read that type. |
13455 | Don't follow DW_AT_specification though, that will take us back up | |
13456 | the chain and we want to go down. */ | |
45e58e77 | 13457 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13458 | if (attr) |
13459 | { | |
ac9ec31b | 13460 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13461 | |
ac9ec31b | 13462 | /* The type's CU may not be the same as CU. |
02142a6c | 13463 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13464 | return set_die_type (die, type, cu); |
13465 | } | |
13466 | ||
c906108c SS |
13467 | type = alloc_type (objfile); |
13468 | ||
13469 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 13470 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 13471 | if (name != NULL) |
7d455152 | 13472 | TYPE_TAG_NAME (type) = name; |
c906108c | 13473 | |
0626fc76 TT |
13474 | attr = dwarf2_attr (die, DW_AT_type, cu); |
13475 | if (attr != NULL) | |
13476 | { | |
13477 | struct type *underlying_type = die_type (die, cu); | |
13478 | ||
13479 | TYPE_TARGET_TYPE (type) = underlying_type; | |
13480 | } | |
13481 | ||
e142c38c | 13482 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13483 | if (attr) |
13484 | { | |
13485 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13486 | } | |
13487 | else | |
13488 | { | |
13489 | TYPE_LENGTH (type) = 0; | |
13490 | } | |
13491 | ||
137033e9 JB |
13492 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
13493 | declared as private in the package spec, and then defined only | |
13494 | inside the package body. Such types are known as Taft Amendment | |
13495 | Types. When another package uses such a type, an incomplete DIE | |
13496 | may be generated by the compiler. */ | |
02eb380e | 13497 | if (die_is_declaration (die, cu)) |
876cecd0 | 13498 | TYPE_STUB (type) = 1; |
02eb380e | 13499 | |
0626fc76 TT |
13500 | /* Finish the creation of this type by using the enum's children. |
13501 | We must call this even when the underlying type has been provided | |
13502 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
13503 | update_enumeration_type_from_children (die, type, cu); |
13504 | ||
0626fc76 TT |
13505 | /* If this type has an underlying type that is not a stub, then we |
13506 | may use its attributes. We always use the "unsigned" attribute | |
13507 | in this situation, because ordinarily we guess whether the type | |
13508 | is unsigned -- but the guess can be wrong and the underlying type | |
13509 | can tell us the reality. However, we defer to a local size | |
13510 | attribute if one exists, because this lets the compiler override | |
13511 | the underlying type if needed. */ | |
13512 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
13513 | { | |
13514 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
13515 | if (TYPE_LENGTH (type) == 0) | |
13516 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
13517 | } | |
13518 | ||
3d567982 TT |
13519 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
13520 | ||
f792889a | 13521 | return set_die_type (die, type, cu); |
134d01f1 DJ |
13522 | } |
13523 | ||
13524 | /* Given a pointer to a die which begins an enumeration, process all | |
13525 | the dies that define the members of the enumeration, and create the | |
13526 | symbol for the enumeration type. | |
13527 | ||
13528 | NOTE: We reverse the order of the element list. */ | |
13529 | ||
13530 | static void | |
13531 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13532 | { | |
f792889a | 13533 | struct type *this_type; |
134d01f1 | 13534 | |
f792889a DJ |
13535 | this_type = get_die_type (die, cu); |
13536 | if (this_type == NULL) | |
13537 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 13538 | |
639d11d3 | 13539 | if (die->child != NULL) |
c906108c | 13540 | { |
9dc481d3 DE |
13541 | struct die_info *child_die; |
13542 | struct symbol *sym; | |
13543 | struct field *fields = NULL; | |
13544 | int num_fields = 0; | |
15d034d0 | 13545 | const char *name; |
9dc481d3 | 13546 | |
639d11d3 | 13547 | child_die = die->child; |
c906108c SS |
13548 | while (child_die && child_die->tag) |
13549 | { | |
13550 | if (child_die->tag != DW_TAG_enumerator) | |
13551 | { | |
e7c27a73 | 13552 | process_die (child_die, cu); |
c906108c SS |
13553 | } |
13554 | else | |
13555 | { | |
39cbfefa DJ |
13556 | name = dwarf2_name (child_die, cu); |
13557 | if (name) | |
c906108c | 13558 | { |
f792889a | 13559 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
13560 | |
13561 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13562 | { | |
13563 | fields = (struct field *) | |
13564 | xrealloc (fields, | |
13565 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13566 | * sizeof (struct field)); |
c906108c SS |
13567 | } |
13568 | ||
3567439c | 13569 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 13570 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 13571 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
13572 | FIELD_BITSIZE (fields[num_fields]) = 0; |
13573 | ||
13574 | num_fields++; | |
13575 | } | |
13576 | } | |
13577 | ||
13578 | child_die = sibling_die (child_die); | |
13579 | } | |
13580 | ||
13581 | if (num_fields) | |
13582 | { | |
f792889a DJ |
13583 | TYPE_NFIELDS (this_type) = num_fields; |
13584 | TYPE_FIELDS (this_type) = (struct field *) | |
13585 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
13586 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 13587 | sizeof (struct field) * num_fields); |
b8c9b27d | 13588 | xfree (fields); |
c906108c | 13589 | } |
c906108c | 13590 | } |
134d01f1 | 13591 | |
6c83ed52 TT |
13592 | /* If we are reading an enum from a .debug_types unit, and the enum |
13593 | is a declaration, and the enum is not the signatured type in the | |
13594 | unit, then we do not want to add a symbol for it. Adding a | |
13595 | symbol would in some cases obscure the true definition of the | |
13596 | enum, giving users an incomplete type when the definition is | |
13597 | actually available. Note that we do not want to do this for all | |
13598 | enums which are just declarations, because C++0x allows forward | |
13599 | enum declarations. */ | |
3019eac3 | 13600 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
13601 | && die_is_declaration (die, cu)) |
13602 | { | |
52dc124a | 13603 | struct signatured_type *sig_type; |
6c83ed52 | 13604 | |
c0f78cd4 | 13605 | sig_type = (struct signatured_type *) cu->per_cu; |
3019eac3 DE |
13606 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
13607 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
13608 | return; |
13609 | } | |
13610 | ||
f792889a | 13611 | new_symbol (die, this_type, cu); |
c906108c SS |
13612 | } |
13613 | ||
13614 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
13615 | the DIE's type field. For now, this only handles one dimensional | |
13616 | arrays. */ | |
13617 | ||
f792889a | 13618 | static struct type * |
e7c27a73 | 13619 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13620 | { |
e7c27a73 | 13621 | struct objfile *objfile = cu->objfile; |
c906108c | 13622 | struct die_info *child_die; |
7e314c57 | 13623 | struct type *type; |
c906108c SS |
13624 | struct type *element_type, *range_type, *index_type; |
13625 | struct type **range_types = NULL; | |
13626 | struct attribute *attr; | |
13627 | int ndim = 0; | |
13628 | struct cleanup *back_to; | |
15d034d0 | 13629 | const char *name; |
dc53a7ad | 13630 | unsigned int bit_stride = 0; |
c906108c | 13631 | |
e7c27a73 | 13632 | element_type = die_type (die, cu); |
c906108c | 13633 | |
7e314c57 JK |
13634 | /* The die_type call above may have already set the type for this DIE. */ |
13635 | type = get_die_type (die, cu); | |
13636 | if (type) | |
13637 | return type; | |
13638 | ||
dc53a7ad JB |
13639 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
13640 | if (attr != NULL) | |
13641 | bit_stride = DW_UNSND (attr) * 8; | |
13642 | ||
13643 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
13644 | if (attr != NULL) | |
13645 | bit_stride = DW_UNSND (attr); | |
13646 | ||
c906108c SS |
13647 | /* Irix 6.2 native cc creates array types without children for |
13648 | arrays with unspecified length. */ | |
639d11d3 | 13649 | if (die->child == NULL) |
c906108c | 13650 | { |
46bf5051 | 13651 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 13652 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad JB |
13653 | type = create_array_type_with_stride (NULL, element_type, range_type, |
13654 | bit_stride); | |
f792889a | 13655 | return set_die_type (die, type, cu); |
c906108c SS |
13656 | } |
13657 | ||
13658 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 13659 | child_die = die->child; |
c906108c SS |
13660 | while (child_die && child_die->tag) |
13661 | { | |
13662 | if (child_die->tag == DW_TAG_subrange_type) | |
13663 | { | |
f792889a | 13664 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 13665 | |
f792889a | 13666 | if (child_type != NULL) |
a02abb62 | 13667 | { |
0963b4bd MS |
13668 | /* The range type was succesfully read. Save it for the |
13669 | array type creation. */ | |
a02abb62 JB |
13670 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
13671 | { | |
13672 | range_types = (struct type **) | |
13673 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
13674 | * sizeof (struct type *)); | |
13675 | if (ndim == 0) | |
13676 | make_cleanup (free_current_contents, &range_types); | |
13677 | } | |
f792889a | 13678 | range_types[ndim++] = child_type; |
a02abb62 | 13679 | } |
c906108c SS |
13680 | } |
13681 | child_die = sibling_die (child_die); | |
13682 | } | |
13683 | ||
13684 | /* Dwarf2 dimensions are output from left to right, create the | |
13685 | necessary array types in backwards order. */ | |
7ca2d3a3 | 13686 | |
c906108c | 13687 | type = element_type; |
7ca2d3a3 DL |
13688 | |
13689 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
13690 | { | |
13691 | int i = 0; | |
9a619af0 | 13692 | |
7ca2d3a3 | 13693 | while (i < ndim) |
dc53a7ad JB |
13694 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
13695 | bit_stride); | |
7ca2d3a3 DL |
13696 | } |
13697 | else | |
13698 | { | |
13699 | while (ndim-- > 0) | |
dc53a7ad JB |
13700 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
13701 | bit_stride); | |
7ca2d3a3 | 13702 | } |
c906108c | 13703 | |
f5f8a009 EZ |
13704 | /* Understand Dwarf2 support for vector types (like they occur on |
13705 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
13706 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
13707 | custom vendor extension. The main difference between a regular | |
13708 | array and the vector variant is that vectors are passed by value | |
13709 | to functions. */ | |
e142c38c | 13710 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 13711 | if (attr) |
ea37ba09 | 13712 | make_vector_type (type); |
f5f8a009 | 13713 | |
dbc98a8b KW |
13714 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
13715 | implementation may choose to implement triple vectors using this | |
13716 | attribute. */ | |
13717 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
13718 | if (attr) | |
13719 | { | |
13720 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
13721 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13722 | else | |
3e43a32a MS |
13723 | complaint (&symfile_complaints, |
13724 | _("DW_AT_byte_size for array type smaller " | |
13725 | "than the total size of elements")); | |
dbc98a8b KW |
13726 | } |
13727 | ||
39cbfefa DJ |
13728 | name = dwarf2_name (die, cu); |
13729 | if (name) | |
13730 | TYPE_NAME (type) = name; | |
6e70227d | 13731 | |
0963b4bd | 13732 | /* Install the type in the die. */ |
7e314c57 JK |
13733 | set_die_type (die, type, cu); |
13734 | ||
13735 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
13736 | set_descriptive_type (type, die, cu); |
13737 | ||
c906108c SS |
13738 | do_cleanups (back_to); |
13739 | ||
7e314c57 | 13740 | return type; |
c906108c SS |
13741 | } |
13742 | ||
7ca2d3a3 | 13743 | static enum dwarf_array_dim_ordering |
6e70227d | 13744 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
13745 | { |
13746 | struct attribute *attr; | |
13747 | ||
13748 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
13749 | ||
13750 | if (attr) return DW_SND (attr); | |
13751 | ||
0963b4bd MS |
13752 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
13753 | opposite order to the dwarf2 specification, but data is still | |
13754 | laid out as per normal fortran. | |
7ca2d3a3 | 13755 | |
0963b4bd MS |
13756 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
13757 | version checking. */ | |
7ca2d3a3 | 13758 | |
905e0470 PM |
13759 | if (cu->language == language_fortran |
13760 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
13761 | { |
13762 | return DW_ORD_row_major; | |
13763 | } | |
13764 | ||
6e70227d | 13765 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
13766 | { |
13767 | case array_column_major: | |
13768 | return DW_ORD_col_major; | |
13769 | case array_row_major: | |
13770 | default: | |
13771 | return DW_ORD_row_major; | |
13772 | }; | |
13773 | } | |
13774 | ||
72019c9c | 13775 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 13776 | the DIE's type field. */ |
72019c9c | 13777 | |
f792889a | 13778 | static struct type * |
72019c9c GM |
13779 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
13780 | { | |
7e314c57 JK |
13781 | struct type *domain_type, *set_type; |
13782 | struct attribute *attr; | |
f792889a | 13783 | |
7e314c57 JK |
13784 | domain_type = die_type (die, cu); |
13785 | ||
13786 | /* The die_type call above may have already set the type for this DIE. */ | |
13787 | set_type = get_die_type (die, cu); | |
13788 | if (set_type) | |
13789 | return set_type; | |
13790 | ||
13791 | set_type = create_set_type (NULL, domain_type); | |
13792 | ||
13793 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
13794 | if (attr) |
13795 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 13796 | |
f792889a | 13797 | return set_die_type (die, set_type, cu); |
72019c9c | 13798 | } |
7ca2d3a3 | 13799 | |
0971de02 TT |
13800 | /* A helper for read_common_block that creates a locexpr baton. |
13801 | SYM is the symbol which we are marking as computed. | |
13802 | COMMON_DIE is the DIE for the common block. | |
13803 | COMMON_LOC is the location expression attribute for the common | |
13804 | block itself. | |
13805 | MEMBER_LOC is the location expression attribute for the particular | |
13806 | member of the common block that we are processing. | |
13807 | CU is the CU from which the above come. */ | |
13808 | ||
13809 | static void | |
13810 | mark_common_block_symbol_computed (struct symbol *sym, | |
13811 | struct die_info *common_die, | |
13812 | struct attribute *common_loc, | |
13813 | struct attribute *member_loc, | |
13814 | struct dwarf2_cu *cu) | |
13815 | { | |
13816 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13817 | struct dwarf2_locexpr_baton *baton; | |
13818 | gdb_byte *ptr; | |
13819 | unsigned int cu_off; | |
13820 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
13821 | LONGEST offset = 0; | |
13822 | ||
13823 | gdb_assert (common_loc && member_loc); | |
13824 | gdb_assert (attr_form_is_block (common_loc)); | |
13825 | gdb_assert (attr_form_is_block (member_loc) | |
13826 | || attr_form_is_constant (member_loc)); | |
13827 | ||
13828 | baton = obstack_alloc (&objfile->objfile_obstack, | |
13829 | sizeof (struct dwarf2_locexpr_baton)); | |
13830 | baton->per_cu = cu->per_cu; | |
13831 | gdb_assert (baton->per_cu); | |
13832 | ||
13833 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
13834 | ||
13835 | if (attr_form_is_constant (member_loc)) | |
13836 | { | |
13837 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
13838 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
13839 | } | |
13840 | else | |
13841 | baton->size += DW_BLOCK (member_loc)->size; | |
13842 | ||
13843 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
13844 | baton->data = ptr; | |
13845 | ||
13846 | *ptr++ = DW_OP_call4; | |
13847 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
13848 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
13849 | ptr += 4; | |
13850 | ||
13851 | if (attr_form_is_constant (member_loc)) | |
13852 | { | |
13853 | *ptr++ = DW_OP_addr; | |
13854 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
13855 | ptr += cu->header.addr_size; | |
13856 | } | |
13857 | else | |
13858 | { | |
13859 | /* We have to copy the data here, because DW_OP_call4 will only | |
13860 | use a DW_AT_location attribute. */ | |
13861 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
13862 | ptr += DW_BLOCK (member_loc)->size; | |
13863 | } | |
13864 | ||
13865 | *ptr++ = DW_OP_plus; | |
13866 | gdb_assert (ptr - baton->data == baton->size); | |
13867 | ||
0971de02 | 13868 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 13869 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
13870 | } |
13871 | ||
4357ac6c TT |
13872 | /* Create appropriate locally-scoped variables for all the |
13873 | DW_TAG_common_block entries. Also create a struct common_block | |
13874 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
13875 | is used to sepate the common blocks name namespace from regular | |
13876 | variable names. */ | |
c906108c SS |
13877 | |
13878 | static void | |
e7c27a73 | 13879 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13880 | { |
0971de02 TT |
13881 | struct attribute *attr; |
13882 | ||
13883 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13884 | if (attr) | |
13885 | { | |
13886 | /* Support the .debug_loc offsets. */ | |
13887 | if (attr_form_is_block (attr)) | |
13888 | { | |
13889 | /* Ok. */ | |
13890 | } | |
13891 | else if (attr_form_is_section_offset (attr)) | |
13892 | { | |
13893 | dwarf2_complex_location_expr_complaint (); | |
13894 | attr = NULL; | |
13895 | } | |
13896 | else | |
13897 | { | |
13898 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
13899 | "common block member"); | |
13900 | attr = NULL; | |
13901 | } | |
13902 | } | |
13903 | ||
639d11d3 | 13904 | if (die->child != NULL) |
c906108c | 13905 | { |
4357ac6c TT |
13906 | struct objfile *objfile = cu->objfile; |
13907 | struct die_info *child_die; | |
13908 | size_t n_entries = 0, size; | |
13909 | struct common_block *common_block; | |
13910 | struct symbol *sym; | |
74ac6d43 | 13911 | |
4357ac6c TT |
13912 | for (child_die = die->child; |
13913 | child_die && child_die->tag; | |
13914 | child_die = sibling_die (child_die)) | |
13915 | ++n_entries; | |
13916 | ||
13917 | size = (sizeof (struct common_block) | |
13918 | + (n_entries - 1) * sizeof (struct symbol *)); | |
13919 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
13920 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
13921 | common_block->n_entries = 0; | |
13922 | ||
13923 | for (child_die = die->child; | |
13924 | child_die && child_die->tag; | |
13925 | child_die = sibling_die (child_die)) | |
13926 | { | |
13927 | /* Create the symbol in the DW_TAG_common_block block in the current | |
13928 | symbol scope. */ | |
e7c27a73 | 13929 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
13930 | if (sym != NULL) |
13931 | { | |
13932 | struct attribute *member_loc; | |
13933 | ||
13934 | common_block->contents[common_block->n_entries++] = sym; | |
13935 | ||
13936 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
13937 | cu); | |
13938 | if (member_loc) | |
13939 | { | |
13940 | /* GDB has handled this for a long time, but it is | |
13941 | not specified by DWARF. It seems to have been | |
13942 | emitted by gfortran at least as recently as: | |
13943 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
13944 | complaint (&symfile_complaints, | |
13945 | _("Variable in common block has " | |
13946 | "DW_AT_data_member_location " | |
13947 | "- DIE at 0x%x [in module %s]"), | |
4262abfb JK |
13948 | child_die->offset.sect_off, |
13949 | objfile_name (cu->objfile)); | |
0971de02 TT |
13950 | |
13951 | if (attr_form_is_section_offset (member_loc)) | |
13952 | dwarf2_complex_location_expr_complaint (); | |
13953 | else if (attr_form_is_constant (member_loc) | |
13954 | || attr_form_is_block (member_loc)) | |
13955 | { | |
13956 | if (attr) | |
13957 | mark_common_block_symbol_computed (sym, die, attr, | |
13958 | member_loc, cu); | |
13959 | } | |
13960 | else | |
13961 | dwarf2_complex_location_expr_complaint (); | |
13962 | } | |
13963 | } | |
c906108c | 13964 | } |
4357ac6c TT |
13965 | |
13966 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
13967 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
13968 | } |
13969 | } | |
13970 | ||
0114d602 | 13971 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 13972 | |
0114d602 DJ |
13973 | static struct type * |
13974 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 13975 | { |
e7c27a73 | 13976 | struct objfile *objfile = cu->objfile; |
0114d602 | 13977 | const char *previous_prefix, *name; |
9219021c | 13978 | int is_anonymous; |
0114d602 DJ |
13979 | struct type *type; |
13980 | ||
13981 | /* For extensions, reuse the type of the original namespace. */ | |
13982 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
13983 | { | |
13984 | struct die_info *ext_die; | |
13985 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 13986 | |
0114d602 DJ |
13987 | ext_die = dwarf2_extension (die, &ext_cu); |
13988 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
13989 | |
13990 | /* EXT_CU may not be the same as CU. | |
02142a6c | 13991 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
13992 | return set_die_type (die, type, cu); |
13993 | } | |
9219021c | 13994 | |
e142c38c | 13995 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
13996 | |
13997 | /* Now build the name of the current namespace. */ | |
13998 | ||
0114d602 DJ |
13999 | previous_prefix = determine_prefix (die, cu); |
14000 | if (previous_prefix[0] != '\0') | |
14001 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 14002 | previous_prefix, name, 0, cu); |
0114d602 DJ |
14003 | |
14004 | /* Create the type. */ | |
14005 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
14006 | objfile); | |
abee88f2 | 14007 | TYPE_NAME (type) = name; |
0114d602 DJ |
14008 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
14009 | ||
60531b24 | 14010 | return set_die_type (die, type, cu); |
0114d602 DJ |
14011 | } |
14012 | ||
14013 | /* Read a C++ namespace. */ | |
14014 | ||
14015 | static void | |
14016 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
14017 | { | |
14018 | struct objfile *objfile = cu->objfile; | |
0114d602 | 14019 | int is_anonymous; |
9219021c | 14020 | |
5c4e30ca DC |
14021 | /* Add a symbol associated to this if we haven't seen the namespace |
14022 | before. Also, add a using directive if it's an anonymous | |
14023 | namespace. */ | |
9219021c | 14024 | |
f2f0e013 | 14025 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
14026 | { |
14027 | struct type *type; | |
14028 | ||
0114d602 | 14029 | type = read_type_die (die, cu); |
e7c27a73 | 14030 | new_symbol (die, type, cu); |
5c4e30ca | 14031 | |
e8e80198 | 14032 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 14033 | if (is_anonymous) |
0114d602 DJ |
14034 | { |
14035 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 14036 | |
c0cc3a76 | 14037 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
12aaed36 | 14038 | NULL, NULL, 0, &objfile->objfile_obstack); |
0114d602 | 14039 | } |
5c4e30ca | 14040 | } |
9219021c | 14041 | |
639d11d3 | 14042 | if (die->child != NULL) |
d9fa45fe | 14043 | { |
639d11d3 | 14044 | struct die_info *child_die = die->child; |
6e70227d | 14045 | |
d9fa45fe DC |
14046 | while (child_die && child_die->tag) |
14047 | { | |
e7c27a73 | 14048 | process_die (child_die, cu); |
d9fa45fe DC |
14049 | child_die = sibling_die (child_die); |
14050 | } | |
14051 | } | |
38d518c9 EZ |
14052 | } |
14053 | ||
f55ee35c JK |
14054 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
14055 | imported module. Still we need that type as local Fortran "use ... only" | |
14056 | declaration imports depend on the created type in determine_prefix. */ | |
14057 | ||
14058 | static struct type * | |
14059 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
14060 | { | |
14061 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 14062 | const char *module_name; |
f55ee35c JK |
14063 | struct type *type; |
14064 | ||
14065 | module_name = dwarf2_name (die, cu); | |
14066 | if (!module_name) | |
3e43a32a MS |
14067 | complaint (&symfile_complaints, |
14068 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 14069 | die->offset.sect_off); |
f55ee35c JK |
14070 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
14071 | ||
14072 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
14073 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
14074 | ||
14075 | return set_die_type (die, type, cu); | |
14076 | } | |
14077 | ||
5d7cb8df JK |
14078 | /* Read a Fortran module. */ |
14079 | ||
14080 | static void | |
14081 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
14082 | { | |
14083 | struct die_info *child_die = die->child; | |
530e8392 KB |
14084 | struct type *type; |
14085 | ||
14086 | type = read_type_die (die, cu); | |
14087 | new_symbol (die, type, cu); | |
5d7cb8df | 14088 | |
5d7cb8df JK |
14089 | while (child_die && child_die->tag) |
14090 | { | |
14091 | process_die (child_die, cu); | |
14092 | child_die = sibling_die (child_die); | |
14093 | } | |
14094 | } | |
14095 | ||
38d518c9 EZ |
14096 | /* Return the name of the namespace represented by DIE. Set |
14097 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
14098 | namespace. */ | |
14099 | ||
14100 | static const char * | |
e142c38c | 14101 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
14102 | { |
14103 | struct die_info *current_die; | |
14104 | const char *name = NULL; | |
14105 | ||
14106 | /* Loop through the extensions until we find a name. */ | |
14107 | ||
14108 | for (current_die = die; | |
14109 | current_die != NULL; | |
f2f0e013 | 14110 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 14111 | { |
e142c38c | 14112 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
14113 | if (name != NULL) |
14114 | break; | |
14115 | } | |
14116 | ||
14117 | /* Is it an anonymous namespace? */ | |
14118 | ||
14119 | *is_anonymous = (name == NULL); | |
14120 | if (*is_anonymous) | |
2b1dbab0 | 14121 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
14122 | |
14123 | return name; | |
d9fa45fe DC |
14124 | } |
14125 | ||
c906108c SS |
14126 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
14127 | the user defined type vector. */ | |
14128 | ||
f792889a | 14129 | static struct type * |
e7c27a73 | 14130 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14131 | { |
5e2b427d | 14132 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 14133 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 14134 | struct type *type; |
8b2dbe47 KB |
14135 | struct attribute *attr_byte_size; |
14136 | struct attribute *attr_address_class; | |
14137 | int byte_size, addr_class; | |
7e314c57 JK |
14138 | struct type *target_type; |
14139 | ||
14140 | target_type = die_type (die, cu); | |
c906108c | 14141 | |
7e314c57 JK |
14142 | /* The die_type call above may have already set the type for this DIE. */ |
14143 | type = get_die_type (die, cu); | |
14144 | if (type) | |
14145 | return type; | |
14146 | ||
14147 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 14148 | |
e142c38c | 14149 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
14150 | if (attr_byte_size) |
14151 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 14152 | else |
8b2dbe47 KB |
14153 | byte_size = cu_header->addr_size; |
14154 | ||
e142c38c | 14155 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
14156 | if (attr_address_class) |
14157 | addr_class = DW_UNSND (attr_address_class); | |
14158 | else | |
14159 | addr_class = DW_ADDR_none; | |
14160 | ||
14161 | /* If the pointer size or address class is different than the | |
14162 | default, create a type variant marked as such and set the | |
14163 | length accordingly. */ | |
14164 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 14165 | { |
5e2b427d | 14166 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
14167 | { |
14168 | int type_flags; | |
14169 | ||
849957d9 | 14170 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 14171 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
14172 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
14173 | == 0); | |
8b2dbe47 KB |
14174 | type = make_type_with_address_space (type, type_flags); |
14175 | } | |
14176 | else if (TYPE_LENGTH (type) != byte_size) | |
14177 | { | |
3e43a32a MS |
14178 | complaint (&symfile_complaints, |
14179 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 14180 | } |
6e70227d | 14181 | else |
9a619af0 MS |
14182 | { |
14183 | /* Should we also complain about unhandled address classes? */ | |
14184 | } | |
c906108c | 14185 | } |
8b2dbe47 KB |
14186 | |
14187 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 14188 | return set_die_type (die, type, cu); |
c906108c SS |
14189 | } |
14190 | ||
14191 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
14192 | the user defined type vector. */ | |
14193 | ||
f792889a | 14194 | static struct type * |
e7c27a73 | 14195 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
14196 | { |
14197 | struct type *type; | |
14198 | struct type *to_type; | |
14199 | struct type *domain; | |
14200 | ||
e7c27a73 DJ |
14201 | to_type = die_type (die, cu); |
14202 | domain = die_containing_type (die, cu); | |
0d5de010 | 14203 | |
7e314c57 JK |
14204 | /* The calls above may have already set the type for this DIE. */ |
14205 | type = get_die_type (die, cu); | |
14206 | if (type) | |
14207 | return type; | |
14208 | ||
0d5de010 DJ |
14209 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
14210 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
14211 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
14212 | { | |
14213 | struct type *new_type = alloc_type (cu->objfile); | |
14214 | ||
14215 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
14216 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
14217 | TYPE_VARARGS (to_type)); | |
14218 | type = lookup_methodptr_type (new_type); | |
14219 | } | |
0d5de010 DJ |
14220 | else |
14221 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 14222 | |
f792889a | 14223 | return set_die_type (die, type, cu); |
c906108c SS |
14224 | } |
14225 | ||
14226 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
14227 | the user defined type vector. */ | |
14228 | ||
f792889a | 14229 | static struct type * |
e7c27a73 | 14230 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14231 | { |
e7c27a73 | 14232 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 14233 | struct type *type, *target_type; |
c906108c SS |
14234 | struct attribute *attr; |
14235 | ||
7e314c57 JK |
14236 | target_type = die_type (die, cu); |
14237 | ||
14238 | /* The die_type call above may have already set the type for this DIE. */ | |
14239 | type = get_die_type (die, cu); | |
14240 | if (type) | |
14241 | return type; | |
14242 | ||
14243 | type = lookup_reference_type (target_type); | |
e142c38c | 14244 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14245 | if (attr) |
14246 | { | |
14247 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
14248 | } | |
14249 | else | |
14250 | { | |
107d2387 | 14251 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 14252 | } |
f792889a | 14253 | return set_die_type (die, type, cu); |
c906108c SS |
14254 | } |
14255 | ||
cf363f18 MW |
14256 | /* Add the given cv-qualifiers to the element type of the array. GCC |
14257 | outputs DWARF type qualifiers that apply to an array, not the | |
14258 | element type. But GDB relies on the array element type to carry | |
14259 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
14260 | specification. */ | |
14261 | ||
14262 | static struct type * | |
14263 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
14264 | struct type *base_type, int cnst, int voltl) | |
14265 | { | |
14266 | struct type *el_type, *inner_array; | |
14267 | ||
14268 | base_type = copy_type (base_type); | |
14269 | inner_array = base_type; | |
14270 | ||
14271 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
14272 | { | |
14273 | TYPE_TARGET_TYPE (inner_array) = | |
14274 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
14275 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
14276 | } | |
14277 | ||
14278 | el_type = TYPE_TARGET_TYPE (inner_array); | |
14279 | cnst |= TYPE_CONST (el_type); | |
14280 | voltl |= TYPE_VOLATILE (el_type); | |
14281 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
14282 | ||
14283 | return set_die_type (die, base_type, cu); | |
14284 | } | |
14285 | ||
f792889a | 14286 | static struct type * |
e7c27a73 | 14287 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14288 | { |
f792889a | 14289 | struct type *base_type, *cv_type; |
c906108c | 14290 | |
e7c27a73 | 14291 | base_type = die_type (die, cu); |
7e314c57 JK |
14292 | |
14293 | /* The die_type call above may have already set the type for this DIE. */ | |
14294 | cv_type = get_die_type (die, cu); | |
14295 | if (cv_type) | |
14296 | return cv_type; | |
14297 | ||
2f608a3a KW |
14298 | /* In case the const qualifier is applied to an array type, the element type |
14299 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
14300 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 14301 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 14302 | |
f792889a DJ |
14303 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
14304 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14305 | } |
14306 | ||
f792889a | 14307 | static struct type * |
e7c27a73 | 14308 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14309 | { |
f792889a | 14310 | struct type *base_type, *cv_type; |
c906108c | 14311 | |
e7c27a73 | 14312 | base_type = die_type (die, cu); |
7e314c57 JK |
14313 | |
14314 | /* The die_type call above may have already set the type for this DIE. */ | |
14315 | cv_type = get_die_type (die, cu); | |
14316 | if (cv_type) | |
14317 | return cv_type; | |
14318 | ||
cf363f18 MW |
14319 | /* In case the volatile qualifier is applied to an array type, the |
14320 | element type is so qualified, not the array type (section 6.7.3 | |
14321 | of C99). */ | |
14322 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
14323 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
14324 | ||
f792889a DJ |
14325 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
14326 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14327 | } |
14328 | ||
06d66ee9 TT |
14329 | /* Handle DW_TAG_restrict_type. */ |
14330 | ||
14331 | static struct type * | |
14332 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
14333 | { | |
14334 | struct type *base_type, *cv_type; | |
14335 | ||
14336 | base_type = die_type (die, cu); | |
14337 | ||
14338 | /* The die_type call above may have already set the type for this DIE. */ | |
14339 | cv_type = get_die_type (die, cu); | |
14340 | if (cv_type) | |
14341 | return cv_type; | |
14342 | ||
14343 | cv_type = make_restrict_type (base_type); | |
14344 | return set_die_type (die, cv_type, cu); | |
14345 | } | |
14346 | ||
a2c2acaf MW |
14347 | /* Handle DW_TAG_atomic_type. */ |
14348 | ||
14349 | static struct type * | |
14350 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
14351 | { | |
14352 | struct type *base_type, *cv_type; | |
14353 | ||
14354 | base_type = die_type (die, cu); | |
14355 | ||
14356 | /* The die_type call above may have already set the type for this DIE. */ | |
14357 | cv_type = get_die_type (die, cu); | |
14358 | if (cv_type) | |
14359 | return cv_type; | |
14360 | ||
14361 | cv_type = make_atomic_type (base_type); | |
14362 | return set_die_type (die, cv_type, cu); | |
14363 | } | |
14364 | ||
c906108c SS |
14365 | /* Extract all information from a DW_TAG_string_type DIE and add to |
14366 | the user defined type vector. It isn't really a user defined type, | |
14367 | but it behaves like one, with other DIE's using an AT_user_def_type | |
14368 | attribute to reference it. */ | |
14369 | ||
f792889a | 14370 | static struct type * |
e7c27a73 | 14371 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14372 | { |
e7c27a73 | 14373 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 14374 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14375 | struct type *type, *range_type, *index_type, *char_type; |
14376 | struct attribute *attr; | |
14377 | unsigned int length; | |
14378 | ||
e142c38c | 14379 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
14380 | if (attr) |
14381 | { | |
14382 | length = DW_UNSND (attr); | |
14383 | } | |
14384 | else | |
14385 | { | |
0963b4bd | 14386 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 14387 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
14388 | if (attr) |
14389 | { | |
14390 | length = DW_UNSND (attr); | |
14391 | } | |
14392 | else | |
14393 | { | |
14394 | length = 1; | |
14395 | } | |
c906108c | 14396 | } |
6ccb9162 | 14397 | |
46bf5051 | 14398 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 14399 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
14400 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
14401 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 14402 | |
f792889a | 14403 | return set_die_type (die, type, cu); |
c906108c SS |
14404 | } |
14405 | ||
4d804846 JB |
14406 | /* Assuming that DIE corresponds to a function, returns nonzero |
14407 | if the function is prototyped. */ | |
14408 | ||
14409 | static int | |
14410 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
14411 | { | |
14412 | struct attribute *attr; | |
14413 | ||
14414 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
14415 | if (attr && (DW_UNSND (attr) != 0)) | |
14416 | return 1; | |
14417 | ||
14418 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
14419 | is only meaninful for C, but the concept also extends to other | |
14420 | languages that allow unprototyped functions (Eg: Objective C). | |
14421 | For all other languages, assume that functions are always | |
14422 | prototyped. */ | |
14423 | if (cu->language != language_c | |
14424 | && cu->language != language_objc | |
14425 | && cu->language != language_opencl) | |
14426 | return 1; | |
14427 | ||
14428 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
14429 | prototyped and unprototyped functions; default to prototyped, | |
14430 | since that is more common in modern code (and RealView warns | |
14431 | about unprototyped functions). */ | |
14432 | if (producer_is_realview (cu->producer)) | |
14433 | return 1; | |
14434 | ||
14435 | return 0; | |
14436 | } | |
14437 | ||
c906108c SS |
14438 | /* Handle DIES due to C code like: |
14439 | ||
14440 | struct foo | |
c5aa993b JM |
14441 | { |
14442 | int (*funcp)(int a, long l); | |
14443 | int b; | |
14444 | }; | |
c906108c | 14445 | |
0963b4bd | 14446 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 14447 | |
f792889a | 14448 | static struct type * |
e7c27a73 | 14449 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14450 | { |
bb5ed363 | 14451 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
14452 | struct type *type; /* Type that this function returns. */ |
14453 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
14454 | struct attribute *attr; |
14455 | ||
e7c27a73 | 14456 | type = die_type (die, cu); |
7e314c57 JK |
14457 | |
14458 | /* The die_type call above may have already set the type for this DIE. */ | |
14459 | ftype = get_die_type (die, cu); | |
14460 | if (ftype) | |
14461 | return ftype; | |
14462 | ||
0c8b41f1 | 14463 | ftype = lookup_function_type (type); |
c906108c | 14464 | |
4d804846 | 14465 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 14466 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 14467 | |
c055b101 CV |
14468 | /* Store the calling convention in the type if it's available in |
14469 | the subroutine die. Otherwise set the calling convention to | |
14470 | the default value DW_CC_normal. */ | |
14471 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
14472 | if (attr) |
14473 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
14474 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
14475 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
14476 | else | |
14477 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 14478 | |
743649fd MW |
14479 | /* Record whether the function returns normally to its caller or not |
14480 | if the DWARF producer set that information. */ | |
14481 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
14482 | if (attr && (DW_UNSND (attr) != 0)) | |
14483 | TYPE_NO_RETURN (ftype) = 1; | |
14484 | ||
76c10ea2 GM |
14485 | /* We need to add the subroutine type to the die immediately so |
14486 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 14487 | declared as the same subroutine type. */ |
76c10ea2 | 14488 | set_die_type (die, ftype, cu); |
6e70227d | 14489 | |
639d11d3 | 14490 | if (die->child != NULL) |
c906108c | 14491 | { |
bb5ed363 | 14492 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 14493 | struct die_info *child_die; |
8072405b | 14494 | int nparams, iparams; |
c906108c SS |
14495 | |
14496 | /* Count the number of parameters. | |
14497 | FIXME: GDB currently ignores vararg functions, but knows about | |
14498 | vararg member functions. */ | |
8072405b | 14499 | nparams = 0; |
639d11d3 | 14500 | child_die = die->child; |
c906108c SS |
14501 | while (child_die && child_die->tag) |
14502 | { | |
14503 | if (child_die->tag == DW_TAG_formal_parameter) | |
14504 | nparams++; | |
14505 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 14506 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
14507 | child_die = sibling_die (child_die); |
14508 | } | |
14509 | ||
14510 | /* Allocate storage for parameters and fill them in. */ | |
14511 | TYPE_NFIELDS (ftype) = nparams; | |
14512 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 14513 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 14514 | |
8072405b JK |
14515 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
14516 | even if we error out during the parameters reading below. */ | |
14517 | for (iparams = 0; iparams < nparams; iparams++) | |
14518 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
14519 | ||
14520 | iparams = 0; | |
639d11d3 | 14521 | child_die = die->child; |
c906108c SS |
14522 | while (child_die && child_die->tag) |
14523 | { | |
14524 | if (child_die->tag == DW_TAG_formal_parameter) | |
14525 | { | |
3ce3b1ba PA |
14526 | struct type *arg_type; |
14527 | ||
14528 | /* DWARF version 2 has no clean way to discern C++ | |
14529 | static and non-static member functions. G++ helps | |
14530 | GDB by marking the first parameter for non-static | |
14531 | member functions (which is the this pointer) as | |
14532 | artificial. We pass this information to | |
14533 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
14534 | ||
14535 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
14536 | 4.5 does not yet generate. */ | |
e142c38c | 14537 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
14538 | if (attr) |
14539 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
14540 | else | |
418835cc KS |
14541 | { |
14542 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
14543 | ||
14544 | /* GCC/43521: In java, the formal parameter | |
14545 | "this" is sometimes not marked with DW_AT_artificial. */ | |
14546 | if (cu->language == language_java) | |
14547 | { | |
14548 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 14549 | |
418835cc KS |
14550 | if (name && !strcmp (name, "this")) |
14551 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
14552 | } | |
14553 | } | |
3ce3b1ba PA |
14554 | arg_type = die_type (child_die, cu); |
14555 | ||
14556 | /* RealView does not mark THIS as const, which the testsuite | |
14557 | expects. GCC marks THIS as const in method definitions, | |
14558 | but not in the class specifications (GCC PR 43053). */ | |
14559 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
14560 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
14561 | { | |
14562 | int is_this = 0; | |
14563 | struct dwarf2_cu *arg_cu = cu; | |
14564 | const char *name = dwarf2_name (child_die, cu); | |
14565 | ||
14566 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
14567 | if (attr) | |
14568 | { | |
14569 | /* If the compiler emits this, use it. */ | |
14570 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
14571 | is_this = 1; | |
14572 | } | |
14573 | else if (name && strcmp (name, "this") == 0) | |
14574 | /* Function definitions will have the argument names. */ | |
14575 | is_this = 1; | |
14576 | else if (name == NULL && iparams == 0) | |
14577 | /* Declarations may not have the names, so like | |
14578 | elsewhere in GDB, assume an artificial first | |
14579 | argument is "this". */ | |
14580 | is_this = 1; | |
14581 | ||
14582 | if (is_this) | |
14583 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
14584 | arg_type, 0); | |
14585 | } | |
14586 | ||
14587 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
14588 | iparams++; |
14589 | } | |
14590 | child_die = sibling_die (child_die); | |
14591 | } | |
14592 | } | |
14593 | ||
76c10ea2 | 14594 | return ftype; |
c906108c SS |
14595 | } |
14596 | ||
f792889a | 14597 | static struct type * |
e7c27a73 | 14598 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14599 | { |
e7c27a73 | 14600 | struct objfile *objfile = cu->objfile; |
0114d602 | 14601 | const char *name = NULL; |
3c8e0968 | 14602 | struct type *this_type, *target_type; |
c906108c | 14603 | |
94af9270 | 14604 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 14605 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 | 14606 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
abee88f2 | 14607 | TYPE_NAME (this_type) = name; |
f792889a | 14608 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
14609 | target_type = die_type (die, cu); |
14610 | if (target_type != this_type) | |
14611 | TYPE_TARGET_TYPE (this_type) = target_type; | |
14612 | else | |
14613 | { | |
14614 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
14615 | spec and cause infinite loops in GDB. */ | |
14616 | complaint (&symfile_complaints, | |
14617 | _("Self-referential DW_TAG_typedef " | |
14618 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14619 | die->offset.sect_off, objfile_name (objfile)); |
3c8e0968 DE |
14620 | TYPE_TARGET_TYPE (this_type) = NULL; |
14621 | } | |
f792889a | 14622 | return this_type; |
c906108c SS |
14623 | } |
14624 | ||
14625 | /* Find a representation of a given base type and install | |
14626 | it in the TYPE field of the die. */ | |
14627 | ||
f792889a | 14628 | static struct type * |
e7c27a73 | 14629 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14630 | { |
e7c27a73 | 14631 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14632 | struct type *type; |
14633 | struct attribute *attr; | |
14634 | int encoding = 0, size = 0; | |
15d034d0 | 14635 | const char *name; |
6ccb9162 UW |
14636 | enum type_code code = TYPE_CODE_INT; |
14637 | int type_flags = 0; | |
14638 | struct type *target_type = NULL; | |
c906108c | 14639 | |
e142c38c | 14640 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
14641 | if (attr) |
14642 | { | |
14643 | encoding = DW_UNSND (attr); | |
14644 | } | |
e142c38c | 14645 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14646 | if (attr) |
14647 | { | |
14648 | size = DW_UNSND (attr); | |
14649 | } | |
39cbfefa | 14650 | name = dwarf2_name (die, cu); |
6ccb9162 | 14651 | if (!name) |
c906108c | 14652 | { |
6ccb9162 UW |
14653 | complaint (&symfile_complaints, |
14654 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 14655 | } |
6ccb9162 UW |
14656 | |
14657 | switch (encoding) | |
c906108c | 14658 | { |
6ccb9162 UW |
14659 | case DW_ATE_address: |
14660 | /* Turn DW_ATE_address into a void * pointer. */ | |
14661 | code = TYPE_CODE_PTR; | |
14662 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14663 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
14664 | break; | |
14665 | case DW_ATE_boolean: | |
14666 | code = TYPE_CODE_BOOL; | |
14667 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14668 | break; | |
14669 | case DW_ATE_complex_float: | |
14670 | code = TYPE_CODE_COMPLEX; | |
14671 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
14672 | break; | |
14673 | case DW_ATE_decimal_float: | |
14674 | code = TYPE_CODE_DECFLOAT; | |
14675 | break; | |
14676 | case DW_ATE_float: | |
14677 | code = TYPE_CODE_FLT; | |
14678 | break; | |
14679 | case DW_ATE_signed: | |
14680 | break; | |
14681 | case DW_ATE_unsigned: | |
14682 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
14683 | if (cu->language == language_fortran |
14684 | && name | |
14685 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
14686 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
14687 | break; |
14688 | case DW_ATE_signed_char: | |
6e70227d | 14689 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14690 | || cu->language == language_pascal |
14691 | || cu->language == language_fortran) | |
6ccb9162 UW |
14692 | code = TYPE_CODE_CHAR; |
14693 | break; | |
14694 | case DW_ATE_unsigned_char: | |
868a0084 | 14695 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14696 | || cu->language == language_pascal |
14697 | || cu->language == language_fortran) | |
6ccb9162 UW |
14698 | code = TYPE_CODE_CHAR; |
14699 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14700 | break; | |
75079b2b TT |
14701 | case DW_ATE_UTF: |
14702 | /* We just treat this as an integer and then recognize the | |
14703 | type by name elsewhere. */ | |
14704 | break; | |
14705 | ||
6ccb9162 UW |
14706 | default: |
14707 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
14708 | dwarf_type_encoding_name (encoding)); | |
14709 | break; | |
c906108c | 14710 | } |
6ccb9162 | 14711 | |
0114d602 DJ |
14712 | type = init_type (code, size, type_flags, NULL, objfile); |
14713 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
14714 | TYPE_TARGET_TYPE (type) = target_type; |
14715 | ||
0114d602 | 14716 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 14717 | TYPE_NOSIGN (type) = 1; |
0114d602 | 14718 | |
f792889a | 14719 | return set_die_type (die, type, cu); |
c906108c SS |
14720 | } |
14721 | ||
80180f79 SA |
14722 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
14723 | resulting value of the attribute into struct bound_prop. | |
14724 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
14725 | ||
14726 | static int | |
14727 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
14728 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
14729 | { | |
14730 | struct dwarf2_property_baton *baton; | |
14731 | struct obstack *obstack = &cu->objfile->objfile_obstack; | |
14732 | ||
14733 | if (attr == NULL || prop == NULL) | |
14734 | return 0; | |
14735 | ||
14736 | if (attr_form_is_block (attr)) | |
14737 | { | |
14738 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14739 | baton->referenced_type = NULL; | |
14740 | baton->locexpr.per_cu = cu->per_cu; | |
14741 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
14742 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
14743 | prop->data.baton = baton; | |
14744 | prop->kind = PROP_LOCEXPR; | |
14745 | gdb_assert (prop->data.baton != NULL); | |
14746 | } | |
14747 | else if (attr_form_is_ref (attr)) | |
14748 | { | |
14749 | struct dwarf2_cu *target_cu = cu; | |
14750 | struct die_info *target_die; | |
14751 | struct attribute *target_attr; | |
14752 | ||
14753 | target_die = follow_die_ref (die, attr, &target_cu); | |
14754 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
14755 | if (target_attr == NULL) |
14756 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
14757 | target_cu); | |
80180f79 SA |
14758 | if (target_attr == NULL) |
14759 | return 0; | |
14760 | ||
df25ebbd | 14761 | switch (target_attr->name) |
80180f79 | 14762 | { |
df25ebbd JB |
14763 | case DW_AT_location: |
14764 | if (attr_form_is_section_offset (target_attr)) | |
14765 | { | |
14766 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14767 | baton->referenced_type = die_type (target_die, target_cu); | |
14768 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
14769 | prop->data.baton = baton; | |
14770 | prop->kind = PROP_LOCLIST; | |
14771 | gdb_assert (prop->data.baton != NULL); | |
14772 | } | |
14773 | else if (attr_form_is_block (target_attr)) | |
14774 | { | |
14775 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14776 | baton->referenced_type = die_type (target_die, target_cu); | |
14777 | baton->locexpr.per_cu = cu->per_cu; | |
14778 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
14779 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
14780 | prop->data.baton = baton; | |
14781 | prop->kind = PROP_LOCEXPR; | |
14782 | gdb_assert (prop->data.baton != NULL); | |
14783 | } | |
14784 | else | |
14785 | { | |
14786 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
14787 | "dynamic property"); | |
14788 | return 0; | |
14789 | } | |
14790 | break; | |
14791 | case DW_AT_data_member_location: | |
14792 | { | |
14793 | LONGEST offset; | |
14794 | ||
14795 | if (!handle_data_member_location (target_die, target_cu, | |
14796 | &offset)) | |
14797 | return 0; | |
14798 | ||
14799 | baton = obstack_alloc (obstack, sizeof (*baton)); | |
14800 | baton->referenced_type = get_die_type (target_die->parent, | |
14801 | target_cu); | |
14802 | baton->offset_info.offset = offset; | |
14803 | baton->offset_info.type = die_type (target_die, target_cu); | |
14804 | prop->data.baton = baton; | |
14805 | prop->kind = PROP_ADDR_OFFSET; | |
14806 | break; | |
14807 | } | |
80180f79 SA |
14808 | } |
14809 | } | |
14810 | else if (attr_form_is_constant (attr)) | |
14811 | { | |
14812 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
14813 | prop->kind = PROP_CONST; | |
14814 | } | |
14815 | else | |
14816 | { | |
14817 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
14818 | dwarf2_name (die, cu)); | |
14819 | return 0; | |
14820 | } | |
14821 | ||
14822 | return 1; | |
14823 | } | |
14824 | ||
a02abb62 JB |
14825 | /* Read the given DW_AT_subrange DIE. */ |
14826 | ||
f792889a | 14827 | static struct type * |
a02abb62 JB |
14828 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
14829 | { | |
4c9ad8c2 | 14830 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
14831 | struct type *range_type; |
14832 | struct attribute *attr; | |
729efb13 | 14833 | struct dynamic_prop low, high; |
4fae6e18 | 14834 | int low_default_is_valid; |
c451ebe5 | 14835 | int high_bound_is_count = 0; |
15d034d0 | 14836 | const char *name; |
43bbcdc2 | 14837 | LONGEST negative_mask; |
e77813c8 | 14838 | |
4c9ad8c2 TT |
14839 | orig_base_type = die_type (die, cu); |
14840 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
14841 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
14842 | creating the range type, but we use the result of check_typedef | |
14843 | when examining properties of the type. */ | |
14844 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 14845 | |
7e314c57 JK |
14846 | /* The die_type call above may have already set the type for this DIE. */ |
14847 | range_type = get_die_type (die, cu); | |
14848 | if (range_type) | |
14849 | return range_type; | |
14850 | ||
729efb13 SA |
14851 | low.kind = PROP_CONST; |
14852 | high.kind = PROP_CONST; | |
14853 | high.data.const_val = 0; | |
14854 | ||
4fae6e18 JK |
14855 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
14856 | omitting DW_AT_lower_bound. */ | |
14857 | switch (cu->language) | |
6e70227d | 14858 | { |
4fae6e18 JK |
14859 | case language_c: |
14860 | case language_cplus: | |
729efb13 | 14861 | low.data.const_val = 0; |
4fae6e18 JK |
14862 | low_default_is_valid = 1; |
14863 | break; | |
14864 | case language_fortran: | |
729efb13 | 14865 | low.data.const_val = 1; |
4fae6e18 JK |
14866 | low_default_is_valid = 1; |
14867 | break; | |
14868 | case language_d: | |
14869 | case language_java: | |
14870 | case language_objc: | |
729efb13 | 14871 | low.data.const_val = 0; |
4fae6e18 JK |
14872 | low_default_is_valid = (cu->header.version >= 4); |
14873 | break; | |
14874 | case language_ada: | |
14875 | case language_m2: | |
14876 | case language_pascal: | |
729efb13 | 14877 | low.data.const_val = 1; |
4fae6e18 JK |
14878 | low_default_is_valid = (cu->header.version >= 4); |
14879 | break; | |
14880 | default: | |
729efb13 | 14881 | low.data.const_val = 0; |
4fae6e18 JK |
14882 | low_default_is_valid = 0; |
14883 | break; | |
a02abb62 JB |
14884 | } |
14885 | ||
e142c38c | 14886 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 14887 | if (attr) |
11c1ba78 | 14888 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
14889 | else if (!low_default_is_valid) |
14890 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
14891 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14892 | die->offset.sect_off, objfile_name (cu->objfile)); |
a02abb62 | 14893 | |
e142c38c | 14894 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 14895 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
14896 | { |
14897 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 14898 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 14899 | { |
c451ebe5 SA |
14900 | /* If bounds are constant do the final calculation here. */ |
14901 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
14902 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
14903 | else | |
14904 | high_bound_is_count = 1; | |
c2ff108b | 14905 | } |
e77813c8 PM |
14906 | } |
14907 | ||
14908 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
14909 | without specifying a base type. | |
14910 | In that case, the base type must be set to the type of | |
14911 | the lower bound, upper bound or count, in that order, if any of these | |
14912 | three attributes references an object that has a type. | |
14913 | If no base type is found, the Dwarf-2 specifications say that | |
14914 | a signed integer type of size equal to the size of an address should | |
14915 | be used. | |
14916 | For the following C code: `extern char gdb_int [];' | |
14917 | GCC produces an empty range DIE. | |
14918 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 14919 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
14920 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
14921 | { | |
14922 | struct objfile *objfile = cu->objfile; | |
14923 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
14924 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
14925 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
14926 | ||
14927 | /* Test "int", "long int", and "long long int" objfile types, | |
14928 | and select the first one having a size above or equal to the | |
14929 | architecture address size. */ | |
14930 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14931 | base_type = int_type; | |
14932 | else | |
14933 | { | |
14934 | int_type = objfile_type (objfile)->builtin_long; | |
14935 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14936 | base_type = int_type; | |
14937 | else | |
14938 | { | |
14939 | int_type = objfile_type (objfile)->builtin_long_long; | |
14940 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14941 | base_type = int_type; | |
14942 | } | |
14943 | } | |
14944 | } | |
a02abb62 | 14945 | |
dbb9c2b1 JB |
14946 | /* Normally, the DWARF producers are expected to use a signed |
14947 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
14948 | But this is unfortunately not always the case, as witnessed | |
14949 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
14950 | is used instead. To work around that ambiguity, we treat | |
14951 | the bounds as signed, and thus sign-extend their values, when | |
14952 | the base type is signed. */ | |
6e70227d | 14953 | negative_mask = |
43bbcdc2 | 14954 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
729efb13 SA |
14955 | if (low.kind == PROP_CONST |
14956 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
14957 | low.data.const_val |= negative_mask; | |
14958 | if (high.kind == PROP_CONST | |
14959 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
14960 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 14961 | |
729efb13 | 14962 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 14963 | |
c451ebe5 SA |
14964 | if (high_bound_is_count) |
14965 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
14966 | ||
c2ff108b JK |
14967 | /* Ada expects an empty array on no boundary attributes. */ |
14968 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 14969 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 14970 | |
39cbfefa DJ |
14971 | name = dwarf2_name (die, cu); |
14972 | if (name) | |
14973 | TYPE_NAME (range_type) = name; | |
6e70227d | 14974 | |
e142c38c | 14975 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
14976 | if (attr) |
14977 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
14978 | ||
7e314c57 JK |
14979 | set_die_type (die, range_type, cu); |
14980 | ||
14981 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
14982 | set_descriptive_type (range_type, die, cu); |
14983 | ||
7e314c57 | 14984 | return range_type; |
a02abb62 | 14985 | } |
6e70227d | 14986 | |
f792889a | 14987 | static struct type * |
81a17f79 JB |
14988 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
14989 | { | |
14990 | struct type *type; | |
81a17f79 | 14991 | |
81a17f79 JB |
14992 | /* For now, we only support the C meaning of an unspecified type: void. */ |
14993 | ||
0114d602 DJ |
14994 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
14995 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 14996 | |
f792889a | 14997 | return set_die_type (die, type, cu); |
81a17f79 | 14998 | } |
a02abb62 | 14999 | |
639d11d3 DC |
15000 | /* Read a single die and all its descendents. Set the die's sibling |
15001 | field to NULL; set other fields in the die correctly, and set all | |
15002 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
15003 | location of the info_ptr after reading all of those dies. PARENT | |
15004 | is the parent of the die in question. */ | |
15005 | ||
15006 | static struct die_info * | |
dee91e82 | 15007 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
15008 | const gdb_byte *info_ptr, |
15009 | const gdb_byte **new_info_ptr, | |
dee91e82 | 15010 | struct die_info *parent) |
639d11d3 DC |
15011 | { |
15012 | struct die_info *die; | |
d521ce57 | 15013 | const gdb_byte *cur_ptr; |
639d11d3 DC |
15014 | int has_children; |
15015 | ||
bf6af496 | 15016 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
15017 | if (die == NULL) |
15018 | { | |
15019 | *new_info_ptr = cur_ptr; | |
15020 | return NULL; | |
15021 | } | |
93311388 | 15022 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
15023 | |
15024 | if (has_children) | |
bf6af496 | 15025 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
15026 | else |
15027 | { | |
15028 | die->child = NULL; | |
15029 | *new_info_ptr = cur_ptr; | |
15030 | } | |
15031 | ||
15032 | die->sibling = NULL; | |
15033 | die->parent = parent; | |
15034 | return die; | |
15035 | } | |
15036 | ||
15037 | /* Read a die, all of its descendents, and all of its siblings; set | |
15038 | all of the fields of all of the dies correctly. Arguments are as | |
15039 | in read_die_and_children. */ | |
15040 | ||
15041 | static struct die_info * | |
bf6af496 | 15042 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
15043 | const gdb_byte *info_ptr, |
15044 | const gdb_byte **new_info_ptr, | |
bf6af496 | 15045 | struct die_info *parent) |
639d11d3 DC |
15046 | { |
15047 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 15048 | const gdb_byte *cur_ptr; |
639d11d3 | 15049 | |
c906108c | 15050 | cur_ptr = info_ptr; |
639d11d3 DC |
15051 | first_die = last_sibling = NULL; |
15052 | ||
15053 | while (1) | |
c906108c | 15054 | { |
639d11d3 | 15055 | struct die_info *die |
dee91e82 | 15056 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 15057 | |
1d325ec1 | 15058 | if (die == NULL) |
c906108c | 15059 | { |
639d11d3 DC |
15060 | *new_info_ptr = cur_ptr; |
15061 | return first_die; | |
c906108c | 15062 | } |
1d325ec1 DJ |
15063 | |
15064 | if (!first_die) | |
15065 | first_die = die; | |
c906108c | 15066 | else |
1d325ec1 DJ |
15067 | last_sibling->sibling = die; |
15068 | ||
15069 | last_sibling = die; | |
c906108c | 15070 | } |
c906108c SS |
15071 | } |
15072 | ||
bf6af496 DE |
15073 | /* Read a die, all of its descendents, and all of its siblings; set |
15074 | all of the fields of all of the dies correctly. Arguments are as | |
15075 | in read_die_and_children. | |
15076 | This the main entry point for reading a DIE and all its children. */ | |
15077 | ||
15078 | static struct die_info * | |
15079 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
15080 | const gdb_byte *info_ptr, |
15081 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
15082 | struct die_info *parent) |
15083 | { | |
15084 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
15085 | new_info_ptr, parent); | |
15086 | ||
15087 | if (dwarf2_die_debug) | |
15088 | { | |
15089 | fprintf_unfiltered (gdb_stdlog, | |
15090 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15091 | get_section_name (reader->die_section), |
bf6af496 DE |
15092 | (unsigned) (info_ptr - reader->die_section->buffer), |
15093 | bfd_get_filename (reader->abfd)); | |
15094 | dump_die (die, dwarf2_die_debug); | |
15095 | } | |
15096 | ||
15097 | return die; | |
15098 | } | |
15099 | ||
3019eac3 DE |
15100 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
15101 | attributes. | |
15102 | The caller is responsible for filling in the extra attributes | |
15103 | and updating (*DIEP)->num_attrs. | |
15104 | Set DIEP to point to a newly allocated die with its information, | |
15105 | except for its child, sibling, and parent fields. | |
15106 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 15107 | |
d521ce57 | 15108 | static const gdb_byte * |
3019eac3 | 15109 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 15110 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 15111 | int *has_children, int num_extra_attrs) |
93311388 | 15112 | { |
b64f50a1 JK |
15113 | unsigned int abbrev_number, bytes_read, i; |
15114 | sect_offset offset; | |
93311388 DE |
15115 | struct abbrev_info *abbrev; |
15116 | struct die_info *die; | |
15117 | struct dwarf2_cu *cu = reader->cu; | |
15118 | bfd *abfd = reader->abfd; | |
15119 | ||
b64f50a1 | 15120 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
15121 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15122 | info_ptr += bytes_read; | |
15123 | if (!abbrev_number) | |
15124 | { | |
15125 | *diep = NULL; | |
15126 | *has_children = 0; | |
15127 | return info_ptr; | |
15128 | } | |
15129 | ||
433df2d4 | 15130 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 15131 | if (!abbrev) |
348e048f DE |
15132 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
15133 | abbrev_number, | |
15134 | bfd_get_filename (abfd)); | |
15135 | ||
3019eac3 | 15136 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
15137 | die->offset = offset; |
15138 | die->tag = abbrev->tag; | |
15139 | die->abbrev = abbrev_number; | |
15140 | ||
3019eac3 DE |
15141 | /* Make the result usable. |
15142 | The caller needs to update num_attrs after adding the extra | |
15143 | attributes. */ | |
93311388 DE |
15144 | die->num_attrs = abbrev->num_attrs; |
15145 | ||
15146 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
15147 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
15148 | info_ptr); | |
93311388 DE |
15149 | |
15150 | *diep = die; | |
15151 | *has_children = abbrev->has_children; | |
15152 | return info_ptr; | |
15153 | } | |
15154 | ||
3019eac3 DE |
15155 | /* Read a die and all its attributes. |
15156 | Set DIEP to point to a newly allocated die with its information, | |
15157 | except for its child, sibling, and parent fields. | |
15158 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
15159 | ||
d521ce57 | 15160 | static const gdb_byte * |
3019eac3 | 15161 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 15162 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
15163 | int *has_children) |
15164 | { | |
d521ce57 | 15165 | const gdb_byte *result; |
bf6af496 DE |
15166 | |
15167 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
15168 | ||
15169 | if (dwarf2_die_debug) | |
15170 | { | |
15171 | fprintf_unfiltered (gdb_stdlog, | |
15172 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15173 | get_section_name (reader->die_section), |
bf6af496 DE |
15174 | (unsigned) (info_ptr - reader->die_section->buffer), |
15175 | bfd_get_filename (reader->abfd)); | |
15176 | dump_die (*diep, dwarf2_die_debug); | |
15177 | } | |
15178 | ||
15179 | return result; | |
3019eac3 | 15180 | } |
433df2d4 DE |
15181 | \f |
15182 | /* Abbreviation tables. | |
3019eac3 | 15183 | |
433df2d4 | 15184 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
15185 | stored in a separate .debug_abbrev section. Before we read any |
15186 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
15187 | in a hash table. */ |
15188 | ||
15189 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
15190 | ||
15191 | static struct abbrev_info * | |
15192 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
15193 | { | |
15194 | struct abbrev_info *abbrev; | |
15195 | ||
15196 | abbrev = (struct abbrev_info *) | |
15197 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
15198 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
15199 | return abbrev; | |
15200 | } | |
15201 | ||
15202 | /* Add an abbreviation to the table. */ | |
c906108c SS |
15203 | |
15204 | static void | |
433df2d4 DE |
15205 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
15206 | unsigned int abbrev_number, | |
15207 | struct abbrev_info *abbrev) | |
15208 | { | |
15209 | unsigned int hash_number; | |
15210 | ||
15211 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15212 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
15213 | abbrev_table->abbrevs[hash_number] = abbrev; | |
15214 | } | |
dee91e82 | 15215 | |
433df2d4 DE |
15216 | /* Look up an abbrev in the table. |
15217 | Returns NULL if the abbrev is not found. */ | |
15218 | ||
15219 | static struct abbrev_info * | |
15220 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
15221 | unsigned int abbrev_number) | |
c906108c | 15222 | { |
433df2d4 DE |
15223 | unsigned int hash_number; |
15224 | struct abbrev_info *abbrev; | |
15225 | ||
15226 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15227 | abbrev = abbrev_table->abbrevs[hash_number]; | |
15228 | ||
15229 | while (abbrev) | |
15230 | { | |
15231 | if (abbrev->number == abbrev_number) | |
15232 | return abbrev; | |
15233 | abbrev = abbrev->next; | |
15234 | } | |
15235 | return NULL; | |
15236 | } | |
15237 | ||
15238 | /* Read in an abbrev table. */ | |
15239 | ||
15240 | static struct abbrev_table * | |
15241 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
15242 | sect_offset offset) | |
15243 | { | |
15244 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 15245 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 15246 | struct abbrev_table *abbrev_table; |
d521ce57 | 15247 | const gdb_byte *abbrev_ptr; |
c906108c SS |
15248 | struct abbrev_info *cur_abbrev; |
15249 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 15250 | unsigned int abbrev_form; |
f3dd6933 DJ |
15251 | struct attr_abbrev *cur_attrs; |
15252 | unsigned int allocated_attrs; | |
c906108c | 15253 | |
70ba0933 | 15254 | abbrev_table = XNEW (struct abbrev_table); |
f4dc4d17 | 15255 | abbrev_table->offset = offset; |
433df2d4 DE |
15256 | obstack_init (&abbrev_table->abbrev_obstack); |
15257 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
15258 | (ABBREV_HASH_SIZE | |
15259 | * sizeof (struct abbrev_info *))); | |
15260 | memset (abbrev_table->abbrevs, 0, | |
15261 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 15262 | |
433df2d4 DE |
15263 | dwarf2_read_section (objfile, section); |
15264 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
15265 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15266 | abbrev_ptr += bytes_read; | |
15267 | ||
f3dd6933 DJ |
15268 | allocated_attrs = ATTR_ALLOC_CHUNK; |
15269 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 15270 | |
0963b4bd | 15271 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
15272 | while (abbrev_number) |
15273 | { | |
433df2d4 | 15274 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
15275 | |
15276 | /* read in abbrev header */ | |
15277 | cur_abbrev->number = abbrev_number; | |
15278 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15279 | abbrev_ptr += bytes_read; | |
15280 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
15281 | abbrev_ptr += 1; | |
15282 | ||
15283 | /* now read in declarations */ | |
15284 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15285 | abbrev_ptr += bytes_read; | |
15286 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15287 | abbrev_ptr += bytes_read; | |
15288 | while (abbrev_name) | |
15289 | { | |
f3dd6933 | 15290 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 15291 | { |
f3dd6933 DJ |
15292 | allocated_attrs += ATTR_ALLOC_CHUNK; |
15293 | cur_attrs | |
15294 | = xrealloc (cur_attrs, (allocated_attrs | |
15295 | * sizeof (struct attr_abbrev))); | |
c906108c | 15296 | } |
ae038cb0 | 15297 | |
f3dd6933 DJ |
15298 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
15299 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
15300 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15301 | abbrev_ptr += bytes_read; | |
15302 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15303 | abbrev_ptr += bytes_read; | |
15304 | } | |
15305 | ||
433df2d4 | 15306 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
15307 | (cur_abbrev->num_attrs |
15308 | * sizeof (struct attr_abbrev))); | |
15309 | memcpy (cur_abbrev->attrs, cur_attrs, | |
15310 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
15311 | ||
433df2d4 | 15312 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
15313 | |
15314 | /* Get next abbreviation. | |
15315 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
15316 | always properly terminated with an abbrev number of 0. |
15317 | Exit loop if we encounter an abbreviation which we have | |
15318 | already read (which means we are about to read the abbreviations | |
15319 | for the next compile unit) or if the end of the abbreviation | |
15320 | table is reached. */ | |
433df2d4 | 15321 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
15322 | break; |
15323 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15324 | abbrev_ptr += bytes_read; | |
433df2d4 | 15325 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
15326 | break; |
15327 | } | |
f3dd6933 DJ |
15328 | |
15329 | xfree (cur_attrs); | |
433df2d4 | 15330 | return abbrev_table; |
c906108c SS |
15331 | } |
15332 | ||
433df2d4 | 15333 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 15334 | |
c906108c | 15335 | static void |
433df2d4 | 15336 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 15337 | { |
433df2d4 DE |
15338 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
15339 | xfree (abbrev_table); | |
c906108c SS |
15340 | } |
15341 | ||
f4dc4d17 DE |
15342 | /* Same as abbrev_table_free but as a cleanup. |
15343 | We pass in a pointer to the pointer to the table so that we can | |
15344 | set the pointer to NULL when we're done. It also simplifies | |
73051182 | 15345 | build_type_psymtabs_1. */ |
f4dc4d17 DE |
15346 | |
15347 | static void | |
15348 | abbrev_table_free_cleanup (void *table_ptr) | |
15349 | { | |
15350 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
15351 | ||
15352 | if (*abbrev_table_ptr != NULL) | |
15353 | abbrev_table_free (*abbrev_table_ptr); | |
15354 | *abbrev_table_ptr = NULL; | |
15355 | } | |
15356 | ||
433df2d4 DE |
15357 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
15358 | ||
15359 | static void | |
15360 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
15361 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 15362 | { |
433df2d4 DE |
15363 | cu->abbrev_table = |
15364 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
15365 | } | |
c906108c | 15366 | |
433df2d4 | 15367 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 15368 | |
433df2d4 DE |
15369 | static void |
15370 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
15371 | { | |
15372 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 15373 | |
a2ce51a0 DE |
15374 | if (cu->abbrev_table != NULL) |
15375 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
15376 | /* Set this to NULL so that we SEGV if we try to read it later, |
15377 | and also because free_comp_unit verifies this is NULL. */ | |
15378 | cu->abbrev_table = NULL; | |
15379 | } | |
15380 | \f | |
72bf9492 DJ |
15381 | /* Returns nonzero if TAG represents a type that we might generate a partial |
15382 | symbol for. */ | |
15383 | ||
15384 | static int | |
15385 | is_type_tag_for_partial (int tag) | |
15386 | { | |
15387 | switch (tag) | |
15388 | { | |
15389 | #if 0 | |
15390 | /* Some types that would be reasonable to generate partial symbols for, | |
15391 | that we don't at present. */ | |
15392 | case DW_TAG_array_type: | |
15393 | case DW_TAG_file_type: | |
15394 | case DW_TAG_ptr_to_member_type: | |
15395 | case DW_TAG_set_type: | |
15396 | case DW_TAG_string_type: | |
15397 | case DW_TAG_subroutine_type: | |
15398 | #endif | |
15399 | case DW_TAG_base_type: | |
15400 | case DW_TAG_class_type: | |
680b30c7 | 15401 | case DW_TAG_interface_type: |
72bf9492 DJ |
15402 | case DW_TAG_enumeration_type: |
15403 | case DW_TAG_structure_type: | |
15404 | case DW_TAG_subrange_type: | |
15405 | case DW_TAG_typedef: | |
15406 | case DW_TAG_union_type: | |
15407 | return 1; | |
15408 | default: | |
15409 | return 0; | |
15410 | } | |
15411 | } | |
15412 | ||
15413 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
15414 | ||
15415 | static struct partial_die_info * | |
dee91e82 | 15416 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 15417 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 15418 | { |
dee91e82 | 15419 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15420 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
15421 | struct partial_die_info *part_die; |
15422 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
15423 | struct abbrev_info *abbrev; | |
15424 | unsigned int bytes_read; | |
5afb4e99 | 15425 | unsigned int load_all = 0; |
72bf9492 DJ |
15426 | int nesting_level = 1; |
15427 | ||
15428 | parent_die = NULL; | |
15429 | last_die = NULL; | |
15430 | ||
7adf1e79 DE |
15431 | gdb_assert (cu->per_cu != NULL); |
15432 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
15433 | load_all = 1; |
15434 | ||
72bf9492 DJ |
15435 | cu->partial_dies |
15436 | = htab_create_alloc_ex (cu->header.length / 12, | |
15437 | partial_die_hash, | |
15438 | partial_die_eq, | |
15439 | NULL, | |
15440 | &cu->comp_unit_obstack, | |
15441 | hashtab_obstack_allocate, | |
15442 | dummy_obstack_deallocate); | |
15443 | ||
15444 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
15445 | sizeof (struct partial_die_info)); | |
15446 | ||
15447 | while (1) | |
15448 | { | |
15449 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
15450 | ||
15451 | /* A NULL abbrev means the end of a series of children. */ | |
15452 | if (abbrev == NULL) | |
15453 | { | |
15454 | if (--nesting_level == 0) | |
15455 | { | |
15456 | /* PART_DIE was probably the last thing allocated on the | |
15457 | comp_unit_obstack, so we could call obstack_free | |
15458 | here. We don't do that because the waste is small, | |
15459 | and will be cleaned up when we're done with this | |
15460 | compilation unit. This way, we're also more robust | |
15461 | against other users of the comp_unit_obstack. */ | |
15462 | return first_die; | |
15463 | } | |
15464 | info_ptr += bytes_read; | |
15465 | last_die = parent_die; | |
15466 | parent_die = parent_die->die_parent; | |
15467 | continue; | |
15468 | } | |
15469 | ||
98bfdba5 PA |
15470 | /* Check for template arguments. We never save these; if |
15471 | they're seen, we just mark the parent, and go on our way. */ | |
15472 | if (parent_die != NULL | |
15473 | && cu->language == language_cplus | |
15474 | && (abbrev->tag == DW_TAG_template_type_param | |
15475 | || abbrev->tag == DW_TAG_template_value_param)) | |
15476 | { | |
15477 | parent_die->has_template_arguments = 1; | |
15478 | ||
15479 | if (!load_all) | |
15480 | { | |
15481 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 15482 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15483 | continue; |
15484 | } | |
15485 | } | |
15486 | ||
0d99eb77 | 15487 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
15488 | Skip their other children. */ |
15489 | if (!load_all | |
15490 | && cu->language == language_cplus | |
15491 | && parent_die != NULL | |
15492 | && parent_die->tag == DW_TAG_subprogram) | |
15493 | { | |
dee91e82 | 15494 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15495 | continue; |
15496 | } | |
15497 | ||
5afb4e99 DJ |
15498 | /* Check whether this DIE is interesting enough to save. Normally |
15499 | we would not be interested in members here, but there may be | |
15500 | later variables referencing them via DW_AT_specification (for | |
15501 | static members). */ | |
15502 | if (!load_all | |
15503 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 15504 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
15505 | && abbrev->tag != DW_TAG_enumerator |
15506 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 15507 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 15508 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 15509 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 15510 | && abbrev->tag != DW_TAG_module |
95554aad | 15511 | && abbrev->tag != DW_TAG_member |
74921315 KS |
15512 | && abbrev->tag != DW_TAG_imported_unit |
15513 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
15514 | { |
15515 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15516 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
15517 | continue; |
15518 | } | |
15519 | ||
dee91e82 DE |
15520 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
15521 | info_ptr); | |
72bf9492 DJ |
15522 | |
15523 | /* This two-pass algorithm for processing partial symbols has a | |
15524 | high cost in cache pressure. Thus, handle some simple cases | |
15525 | here which cover the majority of C partial symbols. DIEs | |
15526 | which neither have specification tags in them, nor could have | |
15527 | specification tags elsewhere pointing at them, can simply be | |
15528 | processed and discarded. | |
15529 | ||
15530 | This segment is also optional; scan_partial_symbols and | |
15531 | add_partial_symbol will handle these DIEs if we chain | |
15532 | them in normally. When compilers which do not emit large | |
15533 | quantities of duplicate debug information are more common, | |
15534 | this code can probably be removed. */ | |
15535 | ||
15536 | /* Any complete simple types at the top level (pretty much all | |
15537 | of them, for a language without namespaces), can be processed | |
15538 | directly. */ | |
15539 | if (parent_die == NULL | |
15540 | && part_die->has_specification == 0 | |
15541 | && part_die->is_declaration == 0 | |
d8228535 | 15542 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
15543 | || part_die->tag == DW_TAG_base_type |
15544 | || part_die->tag == DW_TAG_subrange_type)) | |
15545 | { | |
15546 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 15547 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15548 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
15549 | &objfile->static_psymbols, |
15550 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 15551 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15552 | continue; |
15553 | } | |
15554 | ||
d8228535 JK |
15555 | /* The exception for DW_TAG_typedef with has_children above is |
15556 | a workaround of GCC PR debug/47510. In the case of this complaint | |
15557 | type_name_no_tag_or_error will error on such types later. | |
15558 | ||
15559 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
15560 | it could not find the child DIEs referenced later, this is checked | |
15561 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
15562 | ||
15563 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
15564 | complaint (&symfile_complaints, | |
15565 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
15566 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 15567 | part_die->offset.sect_off, objfile_name (objfile)); |
d8228535 | 15568 | |
72bf9492 DJ |
15569 | /* If we're at the second level, and we're an enumerator, and |
15570 | our parent has no specification (meaning possibly lives in a | |
15571 | namespace elsewhere), then we can add the partial symbol now | |
15572 | instead of queueing it. */ | |
15573 | if (part_die->tag == DW_TAG_enumerator | |
15574 | && parent_die != NULL | |
15575 | && parent_die->die_parent == NULL | |
15576 | && parent_die->tag == DW_TAG_enumeration_type | |
15577 | && parent_die->has_specification == 0) | |
15578 | { | |
15579 | if (part_die->name == NULL) | |
3e43a32a MS |
15580 | complaint (&symfile_complaints, |
15581 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 15582 | else if (building_psymtab) |
04a679b8 | 15583 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15584 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
15585 | (cu->language == language_cplus |
15586 | || cu->language == language_java) | |
bb5ed363 DE |
15587 | ? &objfile->global_psymbols |
15588 | : &objfile->static_psymbols, | |
15589 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 15590 | |
dee91e82 | 15591 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15592 | continue; |
15593 | } | |
15594 | ||
15595 | /* We'll save this DIE so link it in. */ | |
15596 | part_die->die_parent = parent_die; | |
15597 | part_die->die_sibling = NULL; | |
15598 | part_die->die_child = NULL; | |
15599 | ||
15600 | if (last_die && last_die == parent_die) | |
15601 | last_die->die_child = part_die; | |
15602 | else if (last_die) | |
15603 | last_die->die_sibling = part_die; | |
15604 | ||
15605 | last_die = part_die; | |
15606 | ||
15607 | if (first_die == NULL) | |
15608 | first_die = part_die; | |
15609 | ||
15610 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
15611 | find interesting need to be in the hash table, because we | |
15612 | also have the parent/sibling/child chains; only those that we | |
15613 | might refer to by offset later during partial symbol reading. | |
15614 | ||
15615 | For now this means things that might have be the target of a | |
15616 | DW_AT_specification, DW_AT_abstract_origin, or | |
15617 | DW_AT_extension. DW_AT_extension will refer only to | |
15618 | namespaces; DW_AT_abstract_origin refers to functions (and | |
15619 | many things under the function DIE, but we do not recurse | |
15620 | into function DIEs during partial symbol reading) and | |
15621 | possibly variables as well; DW_AT_specification refers to | |
15622 | declarations. Declarations ought to have the DW_AT_declaration | |
15623 | flag. It happens that GCC forgets to put it in sometimes, but | |
15624 | only for functions, not for types. | |
15625 | ||
15626 | Adding more things than necessary to the hash table is harmless | |
15627 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
15628 | wasted time in find_partial_die, when we reread the compilation |
15629 | unit with load_all_dies set. */ | |
72bf9492 | 15630 | |
5afb4e99 | 15631 | if (load_all |
72929c62 | 15632 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 15633 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
15634 | || abbrev->tag == DW_TAG_variable |
15635 | || abbrev->tag == DW_TAG_namespace | |
15636 | || part_die->is_declaration) | |
15637 | { | |
15638 | void **slot; | |
15639 | ||
15640 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 15641 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
15642 | *slot = part_die; |
15643 | } | |
15644 | ||
15645 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
15646 | sizeof (struct partial_die_info)); | |
15647 | ||
15648 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 15649 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
15650 | languages we have to, so that we can get at method physnames |
15651 | to infer fully qualified class names, for DW_AT_specification, | |
15652 | and for C++ template arguments. For C++, we also look one level | |
15653 | inside functions to find template arguments (if the name of the | |
15654 | function does not already contain the template arguments). | |
bc30ff58 JB |
15655 | |
15656 | For Ada, we need to scan the children of subprograms and lexical | |
15657 | blocks as well because Ada allows the definition of nested | |
15658 | entities that could be interesting for the debugger, such as | |
15659 | nested subprograms for instance. */ | |
72bf9492 | 15660 | if (last_die->has_children |
5afb4e99 DJ |
15661 | && (load_all |
15662 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 15663 | || last_die->tag == DW_TAG_module |
72bf9492 | 15664 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
15665 | || (cu->language == language_cplus |
15666 | && last_die->tag == DW_TAG_subprogram | |
15667 | && (last_die->name == NULL | |
15668 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
15669 | || (cu->language != language_c |
15670 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 15671 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 15672 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
15673 | || last_die->tag == DW_TAG_union_type)) |
15674 | || (cu->language == language_ada | |
15675 | && (last_die->tag == DW_TAG_subprogram | |
15676 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
15677 | { |
15678 | nesting_level++; | |
15679 | parent_die = last_die; | |
15680 | continue; | |
15681 | } | |
15682 | ||
15683 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15684 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
15685 | |
15686 | /* Back to the top, do it again. */ | |
15687 | } | |
15688 | } | |
15689 | ||
c906108c SS |
15690 | /* Read a minimal amount of information into the minimal die structure. */ |
15691 | ||
d521ce57 | 15692 | static const gdb_byte * |
dee91e82 DE |
15693 | read_partial_die (const struct die_reader_specs *reader, |
15694 | struct partial_die_info *part_die, | |
15695 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 15696 | const gdb_byte *info_ptr) |
c906108c | 15697 | { |
dee91e82 | 15698 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15699 | struct objfile *objfile = cu->objfile; |
d521ce57 | 15700 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 15701 | unsigned int i; |
c906108c | 15702 | struct attribute attr; |
c5aa993b | 15703 | int has_low_pc_attr = 0; |
c906108c | 15704 | int has_high_pc_attr = 0; |
91da1414 | 15705 | int high_pc_relative = 0; |
c906108c | 15706 | |
72bf9492 | 15707 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 15708 | |
b64f50a1 | 15709 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
15710 | |
15711 | info_ptr += abbrev_len; | |
15712 | ||
15713 | if (abbrev == NULL) | |
15714 | return info_ptr; | |
15715 | ||
c906108c SS |
15716 | part_die->tag = abbrev->tag; |
15717 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
15718 | |
15719 | for (i = 0; i < abbrev->num_attrs; ++i) | |
15720 | { | |
dee91e82 | 15721 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
15722 | |
15723 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 15724 | partial symbol table. */ |
c906108c SS |
15725 | switch (attr.name) |
15726 | { | |
15727 | case DW_AT_name: | |
71c25dea TT |
15728 | switch (part_die->tag) |
15729 | { | |
15730 | case DW_TAG_compile_unit: | |
95554aad | 15731 | case DW_TAG_partial_unit: |
348e048f | 15732 | case DW_TAG_type_unit: |
71c25dea TT |
15733 | /* Compilation units have a DW_AT_name that is a filename, not |
15734 | a source language identifier. */ | |
15735 | case DW_TAG_enumeration_type: | |
15736 | case DW_TAG_enumerator: | |
15737 | /* These tags always have simple identifiers already; no need | |
15738 | to canonicalize them. */ | |
15739 | part_die->name = DW_STRING (&attr); | |
15740 | break; | |
15741 | default: | |
15742 | part_die->name | |
15743 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
34a68019 | 15744 | &objfile->per_bfd->storage_obstack); |
71c25dea TT |
15745 | break; |
15746 | } | |
c906108c | 15747 | break; |
31ef98ae | 15748 | case DW_AT_linkage_name: |
c906108c | 15749 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
15750 | /* Note that both forms of linkage name might appear. We |
15751 | assume they will be the same, and we only store the last | |
15752 | one we see. */ | |
94af9270 KS |
15753 | if (cu->language == language_ada) |
15754 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 15755 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
15756 | break; |
15757 | case DW_AT_low_pc: | |
15758 | has_low_pc_attr = 1; | |
31aa7e4e | 15759 | part_die->lowpc = attr_value_as_address (&attr); |
c906108c SS |
15760 | break; |
15761 | case DW_AT_high_pc: | |
15762 | has_high_pc_attr = 1; | |
31aa7e4e JB |
15763 | part_die->highpc = attr_value_as_address (&attr); |
15764 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) | |
15765 | high_pc_relative = 1; | |
c906108c SS |
15766 | break; |
15767 | case DW_AT_location: | |
0963b4bd | 15768 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
15769 | if (attr_form_is_block (&attr)) |
15770 | { | |
95554aad | 15771 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 15772 | } |
3690dd37 | 15773 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 15774 | { |
4d3c2250 | 15775 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15776 | } |
15777 | else | |
15778 | { | |
4d3c2250 KB |
15779 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
15780 | "partial symbol information"); | |
8e19ed76 | 15781 | } |
c906108c | 15782 | break; |
c906108c SS |
15783 | case DW_AT_external: |
15784 | part_die->is_external = DW_UNSND (&attr); | |
15785 | break; | |
15786 | case DW_AT_declaration: | |
15787 | part_die->is_declaration = DW_UNSND (&attr); | |
15788 | break; | |
15789 | case DW_AT_type: | |
15790 | part_die->has_type = 1; | |
15791 | break; | |
15792 | case DW_AT_abstract_origin: | |
15793 | case DW_AT_specification: | |
72bf9492 DJ |
15794 | case DW_AT_extension: |
15795 | part_die->has_specification = 1; | |
c764a876 | 15796 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
15797 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
15798 | || cu->per_cu->is_dwz); | |
c906108c SS |
15799 | break; |
15800 | case DW_AT_sibling: | |
15801 | /* Ignore absolute siblings, they might point outside of | |
15802 | the current compile unit. */ | |
15803 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
15804 | complaint (&symfile_complaints, |
15805 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 15806 | else |
b9502d3f WN |
15807 | { |
15808 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
15809 | const gdb_byte *sibling_ptr = buffer + off; | |
15810 | ||
15811 | if (sibling_ptr < info_ptr) | |
15812 | complaint (&symfile_complaints, | |
15813 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
15814 | else if (sibling_ptr > reader->buffer_end) |
15815 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
15816 | else |
15817 | part_die->sibling = sibling_ptr; | |
15818 | } | |
c906108c | 15819 | break; |
fa4028e9 JB |
15820 | case DW_AT_byte_size: |
15821 | part_die->has_byte_size = 1; | |
15822 | break; | |
68511cec CES |
15823 | case DW_AT_calling_convention: |
15824 | /* DWARF doesn't provide a way to identify a program's source-level | |
15825 | entry point. DW_AT_calling_convention attributes are only meant | |
15826 | to describe functions' calling conventions. | |
15827 | ||
15828 | However, because it's a necessary piece of information in | |
15829 | Fortran, and because DW_CC_program is the only piece of debugging | |
15830 | information whose definition refers to a 'main program' at all, | |
15831 | several compilers have begun marking Fortran main programs with | |
15832 | DW_CC_program --- even when those functions use the standard | |
15833 | calling conventions. | |
15834 | ||
15835 | So until DWARF specifies a way to provide this information and | |
15836 | compilers pick up the new representation, we'll support this | |
15837 | practice. */ | |
15838 | if (DW_UNSND (&attr) == DW_CC_program | |
15839 | && cu->language == language_fortran) | |
3d548a53 | 15840 | set_objfile_main_name (objfile, part_die->name, language_fortran); |
68511cec | 15841 | break; |
481860b3 GB |
15842 | case DW_AT_inline: |
15843 | if (DW_UNSND (&attr) == DW_INL_inlined | |
15844 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
15845 | part_die->may_be_inlined = 1; | |
15846 | break; | |
95554aad TT |
15847 | |
15848 | case DW_AT_import: | |
15849 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
15850 | { |
15851 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
15852 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
15853 | || cu->per_cu->is_dwz); | |
15854 | } | |
95554aad TT |
15855 | break; |
15856 | ||
c906108c SS |
15857 | default: |
15858 | break; | |
15859 | } | |
15860 | } | |
15861 | ||
91da1414 MW |
15862 | if (high_pc_relative) |
15863 | part_die->highpc += part_die->lowpc; | |
15864 | ||
9373cf26 JK |
15865 | if (has_low_pc_attr && has_high_pc_attr) |
15866 | { | |
15867 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
15868 | eliminate duplicate copies of functions and vtables and such. | |
15869 | The linker will arbitrarily choose one and discard the others. | |
15870 | The AT_*_pc values for such functions refer to local labels in | |
15871 | these sections. If the section from that file was discarded, the | |
15872 | labels are not in the output, so the relocs get a value of 0. | |
15873 | If this is a discarded function, mark the pc bounds as invalid, | |
15874 | so that GDB will ignore it. */ | |
15875 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
15876 | { | |
bb5ed363 | 15877 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15878 | |
15879 | complaint (&symfile_complaints, | |
15880 | _("DW_AT_low_pc %s is zero " | |
15881 | "for DIE at 0x%x [in module %s]"), | |
15882 | paddress (gdbarch, part_die->lowpc), | |
4262abfb | 15883 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15884 | } |
15885 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
15886 | else if (part_die->lowpc >= part_die->highpc) | |
15887 | { | |
bb5ed363 | 15888 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15889 | |
15890 | complaint (&symfile_complaints, | |
15891 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
15892 | "for DIE at 0x%x [in module %s]"), | |
15893 | paddress (gdbarch, part_die->lowpc), | |
15894 | paddress (gdbarch, part_die->highpc), | |
4262abfb | 15895 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15896 | } |
15897 | else | |
15898 | part_die->has_pc_info = 1; | |
15899 | } | |
85cbf3d3 | 15900 | |
c906108c SS |
15901 | return info_ptr; |
15902 | } | |
15903 | ||
72bf9492 DJ |
15904 | /* Find a cached partial DIE at OFFSET in CU. */ |
15905 | ||
15906 | static struct partial_die_info * | |
b64f50a1 | 15907 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
15908 | { |
15909 | struct partial_die_info *lookup_die = NULL; | |
15910 | struct partial_die_info part_die; | |
15911 | ||
15912 | part_die.offset = offset; | |
b64f50a1 JK |
15913 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
15914 | offset.sect_off); | |
72bf9492 | 15915 | |
72bf9492 DJ |
15916 | return lookup_die; |
15917 | } | |
15918 | ||
348e048f DE |
15919 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
15920 | except in the case of .debug_types DIEs which do not reference | |
15921 | outside their CU (they do however referencing other types via | |
55f1336d | 15922 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
15923 | |
15924 | static struct partial_die_info * | |
36586728 | 15925 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 15926 | { |
bb5ed363 | 15927 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
15928 | struct dwarf2_per_cu_data *per_cu = NULL; |
15929 | struct partial_die_info *pd = NULL; | |
72bf9492 | 15930 | |
36586728 TT |
15931 | if (offset_in_dwz == cu->per_cu->is_dwz |
15932 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
15933 | { |
15934 | pd = find_partial_die_in_comp_unit (offset, cu); | |
15935 | if (pd != NULL) | |
15936 | return pd; | |
0d99eb77 DE |
15937 | /* We missed recording what we needed. |
15938 | Load all dies and try again. */ | |
15939 | per_cu = cu->per_cu; | |
5afb4e99 | 15940 | } |
0d99eb77 DE |
15941 | else |
15942 | { | |
15943 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 15944 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
15945 | { |
15946 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
15947 | " external reference to offset 0x%lx [in module %s].\n"), | |
15948 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
15949 | bfd_get_filename (objfile->obfd)); | |
15950 | } | |
36586728 TT |
15951 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
15952 | objfile); | |
72bf9492 | 15953 | |
0d99eb77 DE |
15954 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
15955 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 15956 | |
0d99eb77 DE |
15957 | per_cu->cu->last_used = 0; |
15958 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
15959 | } | |
5afb4e99 | 15960 | |
dee91e82 DE |
15961 | /* If we didn't find it, and not all dies have been loaded, |
15962 | load them all and try again. */ | |
15963 | ||
5afb4e99 DJ |
15964 | if (pd == NULL && per_cu->load_all_dies == 0) |
15965 | { | |
5afb4e99 | 15966 | per_cu->load_all_dies = 1; |
fd820528 DE |
15967 | |
15968 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
15969 | THIS_CU->cu may already be in use. So we can't just free it and | |
15970 | replace its DIEs with the ones we read in. Instead, we leave those | |
15971 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
15972 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
15973 | set. */ | |
dee91e82 | 15974 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
15975 | |
15976 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
15977 | } | |
15978 | ||
15979 | if (pd == NULL) | |
15980 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
15981 | _("could not find partial DIE 0x%x " |
15982 | "in cache [from module %s]\n"), | |
b64f50a1 | 15983 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 15984 | return pd; |
72bf9492 DJ |
15985 | } |
15986 | ||
abc72ce4 DE |
15987 | /* See if we can figure out if the class lives in a namespace. We do |
15988 | this by looking for a member function; its demangled name will | |
15989 | contain namespace info, if there is any. */ | |
15990 | ||
15991 | static void | |
15992 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
15993 | struct dwarf2_cu *cu) | |
15994 | { | |
15995 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
15996 | what template types look like, because the demangler | |
15997 | frequently doesn't give the same name as the debug info. We | |
15998 | could fix this by only using the demangled name to get the | |
15999 | prefix (but see comment in read_structure_type). */ | |
16000 | ||
16001 | struct partial_die_info *real_pdi; | |
16002 | struct partial_die_info *child_pdi; | |
16003 | ||
16004 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
16005 | we should not do this. We'll prepend the parent's fully qualified | |
16006 | name when we create the partial symbol. */ | |
16007 | ||
16008 | real_pdi = struct_pdi; | |
16009 | while (real_pdi->has_specification) | |
36586728 TT |
16010 | real_pdi = find_partial_die (real_pdi->spec_offset, |
16011 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
16012 | |
16013 | if (real_pdi->die_parent != NULL) | |
16014 | return; | |
16015 | ||
16016 | for (child_pdi = struct_pdi->die_child; | |
16017 | child_pdi != NULL; | |
16018 | child_pdi = child_pdi->die_sibling) | |
16019 | { | |
16020 | if (child_pdi->tag == DW_TAG_subprogram | |
16021 | && child_pdi->linkage_name != NULL) | |
16022 | { | |
16023 | char *actual_class_name | |
16024 | = language_class_name_from_physname (cu->language_defn, | |
16025 | child_pdi->linkage_name); | |
16026 | if (actual_class_name != NULL) | |
16027 | { | |
16028 | struct_pdi->name | |
34a68019 | 16029 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb TT |
16030 | actual_class_name, |
16031 | strlen (actual_class_name)); | |
abc72ce4 DE |
16032 | xfree (actual_class_name); |
16033 | } | |
16034 | break; | |
16035 | } | |
16036 | } | |
16037 | } | |
16038 | ||
72bf9492 DJ |
16039 | /* Adjust PART_DIE before generating a symbol for it. This function |
16040 | may set the is_external flag or change the DIE's name. */ | |
16041 | ||
16042 | static void | |
16043 | fixup_partial_die (struct partial_die_info *part_die, | |
16044 | struct dwarf2_cu *cu) | |
16045 | { | |
abc72ce4 DE |
16046 | /* Once we've fixed up a die, there's no point in doing so again. |
16047 | This also avoids a memory leak if we were to call | |
16048 | guess_partial_die_structure_name multiple times. */ | |
16049 | if (part_die->fixup_called) | |
16050 | return; | |
16051 | ||
72bf9492 DJ |
16052 | /* If we found a reference attribute and the DIE has no name, try |
16053 | to find a name in the referred to DIE. */ | |
16054 | ||
16055 | if (part_die->name == NULL && part_die->has_specification) | |
16056 | { | |
16057 | struct partial_die_info *spec_die; | |
72bf9492 | 16058 | |
36586728 TT |
16059 | spec_die = find_partial_die (part_die->spec_offset, |
16060 | part_die->spec_is_dwz, cu); | |
72bf9492 | 16061 | |
10b3939b | 16062 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
16063 | |
16064 | if (spec_die->name) | |
16065 | { | |
16066 | part_die->name = spec_die->name; | |
16067 | ||
16068 | /* Copy DW_AT_external attribute if it is set. */ | |
16069 | if (spec_die->is_external) | |
16070 | part_die->is_external = spec_die->is_external; | |
16071 | } | |
16072 | } | |
16073 | ||
16074 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
16075 | |
16076 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 16077 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 16078 | |
abc72ce4 DE |
16079 | /* If there is no parent die to provide a namespace, and there are |
16080 | children, see if we can determine the namespace from their linkage | |
122d1940 | 16081 | name. */ |
abc72ce4 | 16082 | if (cu->language == language_cplus |
8b70b953 | 16083 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
16084 | && part_die->die_parent == NULL |
16085 | && part_die->has_children | |
16086 | && (part_die->tag == DW_TAG_class_type | |
16087 | || part_die->tag == DW_TAG_structure_type | |
16088 | || part_die->tag == DW_TAG_union_type)) | |
16089 | guess_partial_die_structure_name (part_die, cu); | |
16090 | ||
53832f31 TT |
16091 | /* GCC might emit a nameless struct or union that has a linkage |
16092 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
16093 | if (part_die->name == NULL | |
96408a79 SA |
16094 | && (part_die->tag == DW_TAG_class_type |
16095 | || part_die->tag == DW_TAG_interface_type | |
16096 | || part_die->tag == DW_TAG_structure_type | |
16097 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
16098 | && part_die->linkage_name != NULL) |
16099 | { | |
16100 | char *demangled; | |
16101 | ||
8de20a37 | 16102 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
16103 | if (demangled) |
16104 | { | |
96408a79 SA |
16105 | const char *base; |
16106 | ||
16107 | /* Strip any leading namespaces/classes, keep only the base name. | |
16108 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
16109 | base = strrchr (demangled, ':'); | |
16110 | if (base && base > demangled && base[-1] == ':') | |
16111 | base++; | |
16112 | else | |
16113 | base = demangled; | |
16114 | ||
34a68019 TT |
16115 | part_die->name |
16116 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
16117 | base, strlen (base)); | |
53832f31 TT |
16118 | xfree (demangled); |
16119 | } | |
16120 | } | |
16121 | ||
abc72ce4 | 16122 | part_die->fixup_called = 1; |
72bf9492 DJ |
16123 | } |
16124 | ||
a8329558 | 16125 | /* Read an attribute value described by an attribute form. */ |
c906108c | 16126 | |
d521ce57 | 16127 | static const gdb_byte * |
dee91e82 DE |
16128 | read_attribute_value (const struct die_reader_specs *reader, |
16129 | struct attribute *attr, unsigned form, | |
d521ce57 | 16130 | const gdb_byte *info_ptr) |
c906108c | 16131 | { |
dee91e82 | 16132 | struct dwarf2_cu *cu = reader->cu; |
3e29f34a MR |
16133 | struct objfile *objfile = cu->objfile; |
16134 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
dee91e82 | 16135 | bfd *abfd = reader->abfd; |
e7c27a73 | 16136 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16137 | unsigned int bytes_read; |
16138 | struct dwarf_block *blk; | |
16139 | ||
a8329558 KW |
16140 | attr->form = form; |
16141 | switch (form) | |
c906108c | 16142 | { |
c906108c | 16143 | case DW_FORM_ref_addr: |
ae411497 | 16144 | if (cu->header.version == 2) |
4568ecf9 | 16145 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 16146 | else |
4568ecf9 DE |
16147 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
16148 | &cu->header, &bytes_read); | |
ae411497 TT |
16149 | info_ptr += bytes_read; |
16150 | break; | |
36586728 TT |
16151 | case DW_FORM_GNU_ref_alt: |
16152 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16153 | info_ptr += bytes_read; | |
16154 | break; | |
ae411497 | 16155 | case DW_FORM_addr: |
e7c27a73 | 16156 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 16157 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 16158 | info_ptr += bytes_read; |
c906108c SS |
16159 | break; |
16160 | case DW_FORM_block2: | |
7b5a2f43 | 16161 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16162 | blk->size = read_2_bytes (abfd, info_ptr); |
16163 | info_ptr += 2; | |
16164 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16165 | info_ptr += blk->size; | |
16166 | DW_BLOCK (attr) = blk; | |
16167 | break; | |
16168 | case DW_FORM_block4: | |
7b5a2f43 | 16169 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16170 | blk->size = read_4_bytes (abfd, info_ptr); |
16171 | info_ptr += 4; | |
16172 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16173 | info_ptr += blk->size; | |
16174 | DW_BLOCK (attr) = blk; | |
16175 | break; | |
16176 | case DW_FORM_data2: | |
16177 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
16178 | info_ptr += 2; | |
16179 | break; | |
16180 | case DW_FORM_data4: | |
16181 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
16182 | info_ptr += 4; | |
16183 | break; | |
16184 | case DW_FORM_data8: | |
16185 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
16186 | info_ptr += 8; | |
16187 | break; | |
2dc7f7b3 TT |
16188 | case DW_FORM_sec_offset: |
16189 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16190 | info_ptr += bytes_read; | |
16191 | break; | |
c906108c | 16192 | case DW_FORM_string: |
9b1c24c8 | 16193 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 16194 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
16195 | info_ptr += bytes_read; |
16196 | break; | |
4bdf3d34 | 16197 | case DW_FORM_strp: |
36586728 TT |
16198 | if (!cu->per_cu->is_dwz) |
16199 | { | |
16200 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
16201 | &bytes_read); | |
16202 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16203 | info_ptr += bytes_read; | |
16204 | break; | |
16205 | } | |
16206 | /* FALLTHROUGH */ | |
16207 | case DW_FORM_GNU_strp_alt: | |
16208 | { | |
16209 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
16210 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
16211 | &bytes_read); | |
16212 | ||
16213 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
16214 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16215 | info_ptr += bytes_read; | |
16216 | } | |
4bdf3d34 | 16217 | break; |
2dc7f7b3 | 16218 | case DW_FORM_exprloc: |
c906108c | 16219 | case DW_FORM_block: |
7b5a2f43 | 16220 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16221 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16222 | info_ptr += bytes_read; | |
16223 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16224 | info_ptr += blk->size; | |
16225 | DW_BLOCK (attr) = blk; | |
16226 | break; | |
16227 | case DW_FORM_block1: | |
7b5a2f43 | 16228 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16229 | blk->size = read_1_byte (abfd, info_ptr); |
16230 | info_ptr += 1; | |
16231 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16232 | info_ptr += blk->size; | |
16233 | DW_BLOCK (attr) = blk; | |
16234 | break; | |
16235 | case DW_FORM_data1: | |
16236 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16237 | info_ptr += 1; | |
16238 | break; | |
16239 | case DW_FORM_flag: | |
16240 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16241 | info_ptr += 1; | |
16242 | break; | |
2dc7f7b3 TT |
16243 | case DW_FORM_flag_present: |
16244 | DW_UNSND (attr) = 1; | |
16245 | break; | |
c906108c SS |
16246 | case DW_FORM_sdata: |
16247 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
16248 | info_ptr += bytes_read; | |
16249 | break; | |
16250 | case DW_FORM_udata: | |
16251 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16252 | info_ptr += bytes_read; | |
16253 | break; | |
16254 | case DW_FORM_ref1: | |
4568ecf9 DE |
16255 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16256 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
16257 | info_ptr += 1; |
16258 | break; | |
16259 | case DW_FORM_ref2: | |
4568ecf9 DE |
16260 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16261 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
16262 | info_ptr += 2; |
16263 | break; | |
16264 | case DW_FORM_ref4: | |
4568ecf9 DE |
16265 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16266 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
16267 | info_ptr += 4; |
16268 | break; | |
613e1657 | 16269 | case DW_FORM_ref8: |
4568ecf9 DE |
16270 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16271 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
16272 | info_ptr += 8; |
16273 | break; | |
55f1336d | 16274 | case DW_FORM_ref_sig8: |
ac9ec31b | 16275 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
16276 | info_ptr += 8; |
16277 | break; | |
c906108c | 16278 | case DW_FORM_ref_udata: |
4568ecf9 DE |
16279 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16280 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
16281 | info_ptr += bytes_read; |
16282 | break; | |
c906108c | 16283 | case DW_FORM_indirect: |
a8329558 KW |
16284 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16285 | info_ptr += bytes_read; | |
dee91e82 | 16286 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 16287 | break; |
3019eac3 DE |
16288 | case DW_FORM_GNU_addr_index: |
16289 | if (reader->dwo_file == NULL) | |
16290 | { | |
16291 | /* For now flag a hard error. | |
16292 | Later we can turn this into a complaint. */ | |
16293 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16294 | dwarf_form_name (form), | |
16295 | bfd_get_filename (abfd)); | |
16296 | } | |
16297 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
16298 | info_ptr += bytes_read; | |
16299 | break; | |
16300 | case DW_FORM_GNU_str_index: | |
16301 | if (reader->dwo_file == NULL) | |
16302 | { | |
16303 | /* For now flag a hard error. | |
16304 | Later we can turn this into a complaint if warranted. */ | |
16305 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16306 | dwarf_form_name (form), | |
16307 | bfd_get_filename (abfd)); | |
16308 | } | |
16309 | { | |
16310 | ULONGEST str_index = | |
16311 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16312 | ||
342587c4 | 16313 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
16314 | DW_STRING_IS_CANONICAL (attr) = 0; |
16315 | info_ptr += bytes_read; | |
16316 | } | |
16317 | break; | |
c906108c | 16318 | default: |
8a3fe4f8 | 16319 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
16320 | dwarf_form_name (form), |
16321 | bfd_get_filename (abfd)); | |
c906108c | 16322 | } |
28e94949 | 16323 | |
36586728 | 16324 | /* Super hack. */ |
7771576e | 16325 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
16326 | attr->form = DW_FORM_GNU_ref_alt; |
16327 | ||
28e94949 JB |
16328 | /* We have seen instances where the compiler tried to emit a byte |
16329 | size attribute of -1 which ended up being encoded as an unsigned | |
16330 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
16331 | an object of this size seems pretty unlikely so we can relatively | |
16332 | safely treat these cases as if the size attribute was invalid and | |
16333 | treat them as zero by default. */ | |
16334 | if (attr->name == DW_AT_byte_size | |
16335 | && form == DW_FORM_data4 | |
16336 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
16337 | { |
16338 | complaint | |
16339 | (&symfile_complaints, | |
43bbcdc2 PH |
16340 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
16341 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
16342 | DW_UNSND (attr) = 0; |
16343 | } | |
28e94949 | 16344 | |
c906108c SS |
16345 | return info_ptr; |
16346 | } | |
16347 | ||
a8329558 KW |
16348 | /* Read an attribute described by an abbreviated attribute. */ |
16349 | ||
d521ce57 | 16350 | static const gdb_byte * |
dee91e82 DE |
16351 | read_attribute (const struct die_reader_specs *reader, |
16352 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 16353 | const gdb_byte *info_ptr) |
a8329558 KW |
16354 | { |
16355 | attr->name = abbrev->name; | |
dee91e82 | 16356 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
16357 | } |
16358 | ||
0963b4bd | 16359 | /* Read dwarf information from a buffer. */ |
c906108c SS |
16360 | |
16361 | static unsigned int | |
a1855c1d | 16362 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16363 | { |
fe1b8b76 | 16364 | return bfd_get_8 (abfd, buf); |
c906108c SS |
16365 | } |
16366 | ||
16367 | static int | |
a1855c1d | 16368 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16369 | { |
fe1b8b76 | 16370 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
16371 | } |
16372 | ||
16373 | static unsigned int | |
a1855c1d | 16374 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16375 | { |
fe1b8b76 | 16376 | return bfd_get_16 (abfd, buf); |
c906108c SS |
16377 | } |
16378 | ||
21ae7a4d | 16379 | static int |
a1855c1d | 16380 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16381 | { |
16382 | return bfd_get_signed_16 (abfd, buf); | |
16383 | } | |
16384 | ||
c906108c | 16385 | static unsigned int |
a1855c1d | 16386 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16387 | { |
fe1b8b76 | 16388 | return bfd_get_32 (abfd, buf); |
c906108c SS |
16389 | } |
16390 | ||
21ae7a4d | 16391 | static int |
a1855c1d | 16392 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16393 | { |
16394 | return bfd_get_signed_32 (abfd, buf); | |
16395 | } | |
16396 | ||
93311388 | 16397 | static ULONGEST |
a1855c1d | 16398 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16399 | { |
fe1b8b76 | 16400 | return bfd_get_64 (abfd, buf); |
c906108c SS |
16401 | } |
16402 | ||
16403 | static CORE_ADDR | |
d521ce57 | 16404 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 16405 | unsigned int *bytes_read) |
c906108c | 16406 | { |
e7c27a73 | 16407 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16408 | CORE_ADDR retval = 0; |
16409 | ||
107d2387 | 16410 | if (cu_header->signed_addr_p) |
c906108c | 16411 | { |
107d2387 AC |
16412 | switch (cu_header->addr_size) |
16413 | { | |
16414 | case 2: | |
fe1b8b76 | 16415 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
16416 | break; |
16417 | case 4: | |
fe1b8b76 | 16418 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
16419 | break; |
16420 | case 8: | |
fe1b8b76 | 16421 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
16422 | break; |
16423 | default: | |
8e65ff28 | 16424 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 16425 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 16426 | bfd_get_filename (abfd)); |
107d2387 AC |
16427 | } |
16428 | } | |
16429 | else | |
16430 | { | |
16431 | switch (cu_header->addr_size) | |
16432 | { | |
16433 | case 2: | |
fe1b8b76 | 16434 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
16435 | break; |
16436 | case 4: | |
fe1b8b76 | 16437 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
16438 | break; |
16439 | case 8: | |
fe1b8b76 | 16440 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
16441 | break; |
16442 | default: | |
8e65ff28 | 16443 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
16444 | _("read_address: bad switch, " |
16445 | "unsigned [in module %s]"), | |
659b0389 | 16446 | bfd_get_filename (abfd)); |
107d2387 | 16447 | } |
c906108c | 16448 | } |
64367e0a | 16449 | |
107d2387 AC |
16450 | *bytes_read = cu_header->addr_size; |
16451 | return retval; | |
c906108c SS |
16452 | } |
16453 | ||
f7ef9339 | 16454 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
16455 | specification allows the initial length to take up either 4 bytes |
16456 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
16457 | bytes describe the length and all offsets will be 8 bytes in length | |
16458 | instead of 4. | |
16459 | ||
f7ef9339 KB |
16460 | An older, non-standard 64-bit format is also handled by this |
16461 | function. The older format in question stores the initial length | |
16462 | as an 8-byte quantity without an escape value. Lengths greater | |
16463 | than 2^32 aren't very common which means that the initial 4 bytes | |
16464 | is almost always zero. Since a length value of zero doesn't make | |
16465 | sense for the 32-bit format, this initial zero can be considered to | |
16466 | be an escape value which indicates the presence of the older 64-bit | |
16467 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
16468 | greater than 4GB. If it becomes necessary to handle lengths |
16469 | somewhat larger than 4GB, we could allow other small values (such | |
16470 | as the non-sensical values of 1, 2, and 3) to also be used as | |
16471 | escape values indicating the presence of the old format. | |
f7ef9339 | 16472 | |
917c78fc MK |
16473 | The value returned via bytes_read should be used to increment the |
16474 | relevant pointer after calling read_initial_length(). | |
c764a876 | 16475 | |
613e1657 KB |
16476 | [ Note: read_initial_length() and read_offset() are based on the |
16477 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 16478 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
16479 | from: |
16480 | ||
f7ef9339 | 16481 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 16482 | |
613e1657 KB |
16483 | This document is only a draft and is subject to change. (So beware.) |
16484 | ||
f7ef9339 | 16485 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
16486 | determined empirically by examining 64-bit ELF files produced by |
16487 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
16488 | |
16489 | - Kevin, July 16, 2002 | |
613e1657 KB |
16490 | ] */ |
16491 | ||
16492 | static LONGEST | |
d521ce57 | 16493 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 16494 | { |
fe1b8b76 | 16495 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 16496 | |
dd373385 | 16497 | if (length == 0xffffffff) |
613e1657 | 16498 | { |
fe1b8b76 | 16499 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 16500 | *bytes_read = 12; |
613e1657 | 16501 | } |
dd373385 | 16502 | else if (length == 0) |
f7ef9339 | 16503 | { |
dd373385 | 16504 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 16505 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 16506 | *bytes_read = 8; |
f7ef9339 | 16507 | } |
613e1657 KB |
16508 | else |
16509 | { | |
16510 | *bytes_read = 4; | |
613e1657 KB |
16511 | } |
16512 | ||
c764a876 DE |
16513 | return length; |
16514 | } | |
dd373385 | 16515 | |
c764a876 DE |
16516 | /* Cover function for read_initial_length. |
16517 | Returns the length of the object at BUF, and stores the size of the | |
16518 | initial length in *BYTES_READ and stores the size that offsets will be in | |
16519 | *OFFSET_SIZE. | |
16520 | If the initial length size is not equivalent to that specified in | |
16521 | CU_HEADER then issue a complaint. | |
16522 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 16523 | |
c764a876 | 16524 | static LONGEST |
d521ce57 | 16525 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
16526 | const struct comp_unit_head *cu_header, |
16527 | unsigned int *bytes_read, | |
16528 | unsigned int *offset_size) | |
16529 | { | |
16530 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
16531 | ||
16532 | gdb_assert (cu_header->initial_length_size == 4 | |
16533 | || cu_header->initial_length_size == 8 | |
16534 | || cu_header->initial_length_size == 12); | |
16535 | ||
16536 | if (cu_header->initial_length_size != *bytes_read) | |
16537 | complaint (&symfile_complaints, | |
16538 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 16539 | |
c764a876 | 16540 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 16541 | return length; |
613e1657 KB |
16542 | } |
16543 | ||
16544 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 16545 | given by cu_header->offset_size. */ |
613e1657 KB |
16546 | |
16547 | static LONGEST | |
d521ce57 TT |
16548 | read_offset (bfd *abfd, const gdb_byte *buf, |
16549 | const struct comp_unit_head *cu_header, | |
891d2f0b | 16550 | unsigned int *bytes_read) |
c764a876 DE |
16551 | { |
16552 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 16553 | |
c764a876 DE |
16554 | *bytes_read = cu_header->offset_size; |
16555 | return offset; | |
16556 | } | |
16557 | ||
16558 | /* Read an offset from the data stream. */ | |
16559 | ||
16560 | static LONGEST | |
d521ce57 | 16561 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
16562 | { |
16563 | LONGEST retval = 0; | |
16564 | ||
c764a876 | 16565 | switch (offset_size) |
613e1657 KB |
16566 | { |
16567 | case 4: | |
fe1b8b76 | 16568 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
16569 | break; |
16570 | case 8: | |
fe1b8b76 | 16571 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
16572 | break; |
16573 | default: | |
8e65ff28 | 16574 | internal_error (__FILE__, __LINE__, |
c764a876 | 16575 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 16576 | bfd_get_filename (abfd)); |
613e1657 KB |
16577 | } |
16578 | ||
917c78fc | 16579 | return retval; |
613e1657 KB |
16580 | } |
16581 | ||
d521ce57 TT |
16582 | static const gdb_byte * |
16583 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
16584 | { |
16585 | /* If the size of a host char is 8 bits, we can return a pointer | |
16586 | to the buffer, otherwise we have to copy the data to a buffer | |
16587 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16588 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 16589 | return buf; |
c906108c SS |
16590 | } |
16591 | ||
d521ce57 TT |
16592 | static const char * |
16593 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
16594 | unsigned int *bytes_read_ptr) | |
c906108c SS |
16595 | { |
16596 | /* If the size of a host char is 8 bits, we can return a pointer | |
16597 | to the string, otherwise we have to copy the string to a buffer | |
16598 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16599 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
16600 | if (*buf == '\0') |
16601 | { | |
16602 | *bytes_read_ptr = 1; | |
16603 | return NULL; | |
16604 | } | |
d521ce57 TT |
16605 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
16606 | return (const char *) buf; | |
4bdf3d34 JJ |
16607 | } |
16608 | ||
d521ce57 | 16609 | static const char * |
cf2c3c16 | 16610 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 16611 | { |
be391dca | 16612 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 16613 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
16614 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
16615 | bfd_get_filename (abfd)); | |
dce234bc | 16616 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
16617 | error (_("DW_FORM_strp pointing outside of " |
16618 | ".debug_str section [in module %s]"), | |
16619 | bfd_get_filename (abfd)); | |
4bdf3d34 | 16620 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 16621 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 16622 | return NULL; |
d521ce57 | 16623 | return (const char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
16624 | } |
16625 | ||
36586728 TT |
16626 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
16627 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
16628 | the string consists of a single NUL byte, return NULL; otherwise | |
16629 | return a pointer to the string. */ | |
16630 | ||
d521ce57 | 16631 | static const char * |
36586728 TT |
16632 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
16633 | { | |
16634 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
16635 | ||
16636 | if (dwz->str.buffer == NULL) | |
16637 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
16638 | "section [in module %s]"), | |
16639 | bfd_get_filename (dwz->dwz_bfd)); | |
16640 | if (str_offset >= dwz->str.size) | |
16641 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
16642 | ".debug_str section [in module %s]"), | |
16643 | bfd_get_filename (dwz->dwz_bfd)); | |
16644 | gdb_assert (HOST_CHAR_BIT == 8); | |
16645 | if (dwz->str.buffer[str_offset] == '\0') | |
16646 | return NULL; | |
d521ce57 | 16647 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
16648 | } |
16649 | ||
d521ce57 TT |
16650 | static const char * |
16651 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
16652 | const struct comp_unit_head *cu_header, |
16653 | unsigned int *bytes_read_ptr) | |
16654 | { | |
16655 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
16656 | ||
16657 | return read_indirect_string_at_offset (abfd, str_offset); | |
16658 | } | |
16659 | ||
12df843f | 16660 | static ULONGEST |
d521ce57 TT |
16661 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
16662 | unsigned int *bytes_read_ptr) | |
c906108c | 16663 | { |
12df843f | 16664 | ULONGEST result; |
ce5d95e1 | 16665 | unsigned int num_read; |
c906108c SS |
16666 | int i, shift; |
16667 | unsigned char byte; | |
16668 | ||
16669 | result = 0; | |
16670 | shift = 0; | |
16671 | num_read = 0; | |
16672 | i = 0; | |
16673 | while (1) | |
16674 | { | |
fe1b8b76 | 16675 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16676 | buf++; |
16677 | num_read++; | |
12df843f | 16678 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
16679 | if ((byte & 128) == 0) |
16680 | { | |
16681 | break; | |
16682 | } | |
16683 | shift += 7; | |
16684 | } | |
16685 | *bytes_read_ptr = num_read; | |
16686 | return result; | |
16687 | } | |
16688 | ||
12df843f | 16689 | static LONGEST |
d521ce57 TT |
16690 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
16691 | unsigned int *bytes_read_ptr) | |
c906108c | 16692 | { |
12df843f | 16693 | LONGEST result; |
77e0b926 | 16694 | int i, shift, num_read; |
c906108c SS |
16695 | unsigned char byte; |
16696 | ||
16697 | result = 0; | |
16698 | shift = 0; | |
c906108c SS |
16699 | num_read = 0; |
16700 | i = 0; | |
16701 | while (1) | |
16702 | { | |
fe1b8b76 | 16703 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16704 | buf++; |
16705 | num_read++; | |
12df843f | 16706 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
16707 | shift += 7; |
16708 | if ((byte & 128) == 0) | |
16709 | { | |
16710 | break; | |
16711 | } | |
16712 | } | |
77e0b926 | 16713 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 16714 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
16715 | *bytes_read_ptr = num_read; |
16716 | return result; | |
16717 | } | |
16718 | ||
3019eac3 DE |
16719 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
16720 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
16721 | ADDR_SIZE is the size of addresses from the CU header. */ | |
16722 | ||
16723 | static CORE_ADDR | |
16724 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
16725 | { | |
16726 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
16727 | bfd *abfd = objfile->obfd; | |
16728 | const gdb_byte *info_ptr; | |
16729 | ||
16730 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
16731 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
16732 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 16733 | objfile_name (objfile)); |
3019eac3 DE |
16734 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
16735 | error (_("DW_FORM_addr_index pointing outside of " | |
16736 | ".debug_addr section [in module %s]"), | |
4262abfb | 16737 | objfile_name (objfile)); |
3019eac3 DE |
16738 | info_ptr = (dwarf2_per_objfile->addr.buffer |
16739 | + addr_base + addr_index * addr_size); | |
16740 | if (addr_size == 4) | |
16741 | return bfd_get_32 (abfd, info_ptr); | |
16742 | else | |
16743 | return bfd_get_64 (abfd, info_ptr); | |
16744 | } | |
16745 | ||
16746 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
16747 | ||
16748 | static CORE_ADDR | |
16749 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
16750 | { | |
16751 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
16752 | } | |
16753 | ||
16754 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
16755 | ||
16756 | static CORE_ADDR | |
d521ce57 | 16757 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
16758 | unsigned int *bytes_read) |
16759 | { | |
16760 | bfd *abfd = cu->objfile->obfd; | |
16761 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
16762 | ||
16763 | return read_addr_index (cu, addr_index); | |
16764 | } | |
16765 | ||
16766 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
16767 | back to dwarf2_read_addr_index. */ | |
16768 | ||
16769 | struct dwarf2_read_addr_index_data | |
16770 | { | |
16771 | ULONGEST addr_base; | |
16772 | int addr_size; | |
16773 | }; | |
16774 | ||
16775 | /* die_reader_func for dwarf2_read_addr_index. */ | |
16776 | ||
16777 | static void | |
16778 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 16779 | const gdb_byte *info_ptr, |
3019eac3 DE |
16780 | struct die_info *comp_unit_die, |
16781 | int has_children, | |
16782 | void *data) | |
16783 | { | |
16784 | struct dwarf2_cu *cu = reader->cu; | |
16785 | struct dwarf2_read_addr_index_data *aidata = | |
16786 | (struct dwarf2_read_addr_index_data *) data; | |
16787 | ||
16788 | aidata->addr_base = cu->addr_base; | |
16789 | aidata->addr_size = cu->header.addr_size; | |
16790 | } | |
16791 | ||
16792 | /* Given an index in .debug_addr, fetch the value. | |
16793 | NOTE: This can be called during dwarf expression evaluation, | |
16794 | long after the debug information has been read, and thus per_cu->cu | |
16795 | may no longer exist. */ | |
16796 | ||
16797 | CORE_ADDR | |
16798 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
16799 | unsigned int addr_index) | |
16800 | { | |
16801 | struct objfile *objfile = per_cu->objfile; | |
16802 | struct dwarf2_cu *cu = per_cu->cu; | |
16803 | ULONGEST addr_base; | |
16804 | int addr_size; | |
16805 | ||
16806 | /* This is intended to be called from outside this file. */ | |
16807 | dw2_setup (objfile); | |
16808 | ||
16809 | /* We need addr_base and addr_size. | |
16810 | If we don't have PER_CU->cu, we have to get it. | |
16811 | Nasty, but the alternative is storing the needed info in PER_CU, | |
16812 | which at this point doesn't seem justified: it's not clear how frequently | |
16813 | it would get used and it would increase the size of every PER_CU. | |
16814 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
16815 | so we're not in uncharted territory here. | |
16816 | Alas we need to be a bit more complicated as addr_base is contained | |
16817 | in the DIE. | |
16818 | ||
16819 | We don't need to read the entire CU(/TU). | |
16820 | We just need the header and top level die. | |
a1b64ce1 | 16821 | |
3019eac3 | 16822 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 16823 | For now we skip this optimization. */ |
3019eac3 DE |
16824 | |
16825 | if (cu != NULL) | |
16826 | { | |
16827 | addr_base = cu->addr_base; | |
16828 | addr_size = cu->header.addr_size; | |
16829 | } | |
16830 | else | |
16831 | { | |
16832 | struct dwarf2_read_addr_index_data aidata; | |
16833 | ||
a1b64ce1 DE |
16834 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
16835 | we need addr_base. */ | |
16836 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
16837 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
16838 | addr_base = aidata.addr_base; |
16839 | addr_size = aidata.addr_size; | |
16840 | } | |
16841 | ||
16842 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
16843 | } | |
16844 | ||
57d63ce2 DE |
16845 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
16846 | This is only used by the Fission support. */ | |
3019eac3 | 16847 | |
d521ce57 | 16848 | static const char * |
342587c4 | 16849 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 DE |
16850 | { |
16851 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
c5164cbc | 16852 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 16853 | bfd *abfd = objfile->obfd; |
342587c4 | 16854 | struct dwarf2_cu *cu = reader->cu; |
73869dc2 DE |
16855 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
16856 | struct dwarf2_section_info *str_offsets_section = | |
16857 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 16858 | const gdb_byte *info_ptr; |
3019eac3 | 16859 | ULONGEST str_offset; |
57d63ce2 | 16860 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 16861 | |
73869dc2 DE |
16862 | dwarf2_read_section (objfile, str_section); |
16863 | dwarf2_read_section (objfile, str_offsets_section); | |
16864 | if (str_section->buffer == NULL) | |
57d63ce2 | 16865 | error (_("%s used without .debug_str.dwo section" |
3019eac3 | 16866 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16867 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16868 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 16869 | error (_("%s used without .debug_str_offsets.dwo section" |
3019eac3 | 16870 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16871 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16872 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 16873 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
3019eac3 | 16874 | " section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16875 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16876 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
16877 | + str_index * cu->header.offset_size); |
16878 | if (cu->header.offset_size == 4) | |
16879 | str_offset = bfd_get_32 (abfd, info_ptr); | |
16880 | else | |
16881 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 16882 | if (str_offset >= str_section->size) |
57d63ce2 | 16883 | error (_("Offset from %s pointing outside of" |
3019eac3 | 16884 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 16885 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 16886 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
16887 | } |
16888 | ||
3019eac3 DE |
16889 | /* Return the length of an LEB128 number in BUF. */ |
16890 | ||
16891 | static int | |
16892 | leb128_size (const gdb_byte *buf) | |
16893 | { | |
16894 | const gdb_byte *begin = buf; | |
16895 | gdb_byte byte; | |
16896 | ||
16897 | while (1) | |
16898 | { | |
16899 | byte = *buf++; | |
16900 | if ((byte & 128) == 0) | |
16901 | return buf - begin; | |
16902 | } | |
16903 | } | |
16904 | ||
c906108c | 16905 | static void |
e142c38c | 16906 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
16907 | { |
16908 | switch (lang) | |
16909 | { | |
16910 | case DW_LANG_C89: | |
76bee0cc | 16911 | case DW_LANG_C99: |
0cfd832f | 16912 | case DW_LANG_C11: |
c906108c | 16913 | case DW_LANG_C: |
d1be3247 | 16914 | case DW_LANG_UPC: |
e142c38c | 16915 | cu->language = language_c; |
c906108c SS |
16916 | break; |
16917 | case DW_LANG_C_plus_plus: | |
0cfd832f MW |
16918 | case DW_LANG_C_plus_plus_11: |
16919 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 16920 | cu->language = language_cplus; |
c906108c | 16921 | break; |
6aecb9c2 JB |
16922 | case DW_LANG_D: |
16923 | cu->language = language_d; | |
16924 | break; | |
c906108c SS |
16925 | case DW_LANG_Fortran77: |
16926 | case DW_LANG_Fortran90: | |
b21b22e0 | 16927 | case DW_LANG_Fortran95: |
f7de9aab MW |
16928 | case DW_LANG_Fortran03: |
16929 | case DW_LANG_Fortran08: | |
e142c38c | 16930 | cu->language = language_fortran; |
c906108c | 16931 | break; |
a766d390 DE |
16932 | case DW_LANG_Go: |
16933 | cu->language = language_go; | |
16934 | break; | |
c906108c | 16935 | case DW_LANG_Mips_Assembler: |
e142c38c | 16936 | cu->language = language_asm; |
c906108c | 16937 | break; |
bebd888e | 16938 | case DW_LANG_Java: |
e142c38c | 16939 | cu->language = language_java; |
bebd888e | 16940 | break; |
c906108c | 16941 | case DW_LANG_Ada83: |
8aaf0b47 | 16942 | case DW_LANG_Ada95: |
bc5f45f8 JB |
16943 | cu->language = language_ada; |
16944 | break; | |
72019c9c GM |
16945 | case DW_LANG_Modula2: |
16946 | cu->language = language_m2; | |
16947 | break; | |
fe8e67fd PM |
16948 | case DW_LANG_Pascal83: |
16949 | cu->language = language_pascal; | |
16950 | break; | |
22566fbd DJ |
16951 | case DW_LANG_ObjC: |
16952 | cu->language = language_objc; | |
16953 | break; | |
c906108c SS |
16954 | case DW_LANG_Cobol74: |
16955 | case DW_LANG_Cobol85: | |
c906108c | 16956 | default: |
e142c38c | 16957 | cu->language = language_minimal; |
c906108c SS |
16958 | break; |
16959 | } | |
e142c38c | 16960 | cu->language_defn = language_def (cu->language); |
c906108c SS |
16961 | } |
16962 | ||
16963 | /* Return the named attribute or NULL if not there. */ | |
16964 | ||
16965 | static struct attribute * | |
e142c38c | 16966 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 16967 | { |
a48e046c | 16968 | for (;;) |
c906108c | 16969 | { |
a48e046c TT |
16970 | unsigned int i; |
16971 | struct attribute *spec = NULL; | |
16972 | ||
16973 | for (i = 0; i < die->num_attrs; ++i) | |
16974 | { | |
16975 | if (die->attrs[i].name == name) | |
16976 | return &die->attrs[i]; | |
16977 | if (die->attrs[i].name == DW_AT_specification | |
16978 | || die->attrs[i].name == DW_AT_abstract_origin) | |
16979 | spec = &die->attrs[i]; | |
16980 | } | |
16981 | ||
16982 | if (!spec) | |
16983 | break; | |
c906108c | 16984 | |
f2f0e013 | 16985 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 16986 | } |
c5aa993b | 16987 | |
c906108c SS |
16988 | return NULL; |
16989 | } | |
16990 | ||
348e048f DE |
16991 | /* Return the named attribute or NULL if not there, |
16992 | but do not follow DW_AT_specification, etc. | |
16993 | This is for use in contexts where we're reading .debug_types dies. | |
16994 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
16995 | back up the chain, and we want to go down. */ | |
16996 | ||
16997 | static struct attribute * | |
45e58e77 | 16998 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
16999 | { |
17000 | unsigned int i; | |
17001 | ||
17002 | for (i = 0; i < die->num_attrs; ++i) | |
17003 | if (die->attrs[i].name == name) | |
17004 | return &die->attrs[i]; | |
17005 | ||
17006 | return NULL; | |
17007 | } | |
17008 | ||
05cf31d1 JB |
17009 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
17010 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 17011 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
17012 | |
17013 | static int | |
17014 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
17015 | { | |
17016 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
17017 | ||
17018 | return (attr && DW_UNSND (attr)); | |
17019 | } | |
17020 | ||
3ca72b44 | 17021 | static int |
e142c38c | 17022 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 17023 | { |
05cf31d1 JB |
17024 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
17025 | which value is non-zero. However, we have to be careful with | |
17026 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
17027 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
17028 | end up accidently finding a declaration attribute that belongs | |
17029 | to a different DIE referenced by the specification attribute, | |
17030 | even though the given DIE does not have a declaration attribute. */ | |
17031 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
17032 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
17033 | } |
17034 | ||
63d06c5c | 17035 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 17036 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
17037 | containing the return value on output. If there is no |
17038 | specification, but there is an abstract origin, that is | |
17039 | returned. */ | |
63d06c5c DC |
17040 | |
17041 | static struct die_info * | |
f2f0e013 | 17042 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 17043 | { |
f2f0e013 DJ |
17044 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
17045 | *spec_cu); | |
63d06c5c | 17046 | |
edb3359d DJ |
17047 | if (spec_attr == NULL) |
17048 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
17049 | ||
63d06c5c DC |
17050 | if (spec_attr == NULL) |
17051 | return NULL; | |
17052 | else | |
f2f0e013 | 17053 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 17054 | } |
c906108c | 17055 | |
debd256d | 17056 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
17057 | refers to. |
17058 | NOTE: This is also used as a "cleanup" function. */ | |
17059 | ||
debd256d JB |
17060 | static void |
17061 | free_line_header (struct line_header *lh) | |
17062 | { | |
17063 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 17064 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
17065 | |
17066 | /* Remember that all the lh->file_names[i].name pointers are | |
17067 | pointers into debug_line_buffer, and don't need to be freed. */ | |
17068 | if (lh->file_names) | |
a8bc7b56 | 17069 | xfree (lh->file_names); |
debd256d JB |
17070 | |
17071 | /* Similarly for the include directory names. */ | |
17072 | if (lh->include_dirs) | |
a8bc7b56 | 17073 | xfree (lh->include_dirs); |
debd256d | 17074 | |
a8bc7b56 | 17075 | xfree (lh); |
debd256d JB |
17076 | } |
17077 | ||
527f3840 JK |
17078 | /* Stub for free_line_header to match void * callback types. */ |
17079 | ||
17080 | static void | |
17081 | free_line_header_voidp (void *arg) | |
17082 | { | |
17083 | struct line_header *lh = arg; | |
17084 | ||
17085 | free_line_header (lh); | |
17086 | } | |
17087 | ||
debd256d | 17088 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 17089 | |
debd256d | 17090 | static void |
d521ce57 | 17091 | add_include_dir (struct line_header *lh, const char *include_dir) |
c906108c | 17092 | { |
debd256d JB |
17093 | /* Grow the array if necessary. */ |
17094 | if (lh->include_dirs_size == 0) | |
c5aa993b | 17095 | { |
debd256d JB |
17096 | lh->include_dirs_size = 1; /* for testing */ |
17097 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
17098 | * sizeof (*lh->include_dirs)); | |
17099 | } | |
17100 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
17101 | { | |
17102 | lh->include_dirs_size *= 2; | |
17103 | lh->include_dirs = xrealloc (lh->include_dirs, | |
17104 | (lh->include_dirs_size | |
17105 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 17106 | } |
c906108c | 17107 | |
debd256d JB |
17108 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
17109 | } | |
6e70227d | 17110 | |
debd256d | 17111 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 17112 | |
debd256d JB |
17113 | static void |
17114 | add_file_name (struct line_header *lh, | |
d521ce57 | 17115 | const char *name, |
debd256d JB |
17116 | unsigned int dir_index, |
17117 | unsigned int mod_time, | |
17118 | unsigned int length) | |
17119 | { | |
17120 | struct file_entry *fe; | |
17121 | ||
17122 | /* Grow the array if necessary. */ | |
17123 | if (lh->file_names_size == 0) | |
17124 | { | |
17125 | lh->file_names_size = 1; /* for testing */ | |
17126 | lh->file_names = xmalloc (lh->file_names_size | |
17127 | * sizeof (*lh->file_names)); | |
17128 | } | |
17129 | else if (lh->num_file_names >= lh->file_names_size) | |
17130 | { | |
17131 | lh->file_names_size *= 2; | |
17132 | lh->file_names = xrealloc (lh->file_names, | |
17133 | (lh->file_names_size | |
17134 | * sizeof (*lh->file_names))); | |
17135 | } | |
17136 | ||
17137 | fe = &lh->file_names[lh->num_file_names++]; | |
17138 | fe->name = name; | |
17139 | fe->dir_index = dir_index; | |
17140 | fe->mod_time = mod_time; | |
17141 | fe->length = length; | |
aaa75496 | 17142 | fe->included_p = 0; |
cb1df416 | 17143 | fe->symtab = NULL; |
debd256d | 17144 | } |
6e70227d | 17145 | |
36586728 TT |
17146 | /* A convenience function to find the proper .debug_line section for a |
17147 | CU. */ | |
17148 | ||
17149 | static struct dwarf2_section_info * | |
17150 | get_debug_line_section (struct dwarf2_cu *cu) | |
17151 | { | |
17152 | struct dwarf2_section_info *section; | |
17153 | ||
17154 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
17155 | DWO file. */ | |
17156 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
17157 | section = &cu->dwo_unit->dwo_file->sections.line; | |
17158 | else if (cu->per_cu->is_dwz) | |
17159 | { | |
17160 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
17161 | ||
17162 | section = &dwz->line; | |
17163 | } | |
17164 | else | |
17165 | section = &dwarf2_per_objfile->line; | |
17166 | ||
17167 | return section; | |
17168 | } | |
17169 | ||
debd256d | 17170 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 17171 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 17172 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
17173 | Returns NULL if there is a problem reading the header, e.g., if it |
17174 | has a version we don't understand. | |
debd256d JB |
17175 | |
17176 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
17177 | the returned object point into the dwarf line section buffer, |
17178 | and must not be freed. */ | |
ae2de4f8 | 17179 | |
debd256d | 17180 | static struct line_header * |
3019eac3 | 17181 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
17182 | { |
17183 | struct cleanup *back_to; | |
17184 | struct line_header *lh; | |
d521ce57 | 17185 | const gdb_byte *line_ptr; |
c764a876 | 17186 | unsigned int bytes_read, offset_size; |
debd256d | 17187 | int i; |
d521ce57 | 17188 | const char *cur_dir, *cur_file; |
3019eac3 DE |
17189 | struct dwarf2_section_info *section; |
17190 | bfd *abfd; | |
17191 | ||
36586728 | 17192 | section = get_debug_line_section (cu); |
3019eac3 DE |
17193 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
17194 | if (section->buffer == NULL) | |
debd256d | 17195 | { |
3019eac3 DE |
17196 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
17197 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
17198 | else | |
17199 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
17200 | return 0; |
17201 | } | |
17202 | ||
fceca515 DE |
17203 | /* We can't do this until we know the section is non-empty. |
17204 | Only then do we know we have such a section. */ | |
a32a8923 | 17205 | abfd = get_section_bfd_owner (section); |
fceca515 | 17206 | |
a738430d MK |
17207 | /* Make sure that at least there's room for the total_length field. |
17208 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 17209 | if (offset + 4 >= section->size) |
debd256d | 17210 | { |
4d3c2250 | 17211 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
17212 | return 0; |
17213 | } | |
17214 | ||
17215 | lh = xmalloc (sizeof (*lh)); | |
17216 | memset (lh, 0, sizeof (*lh)); | |
17217 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
17218 | (void *) lh); | |
17219 | ||
527f3840 JK |
17220 | lh->offset.sect_off = offset; |
17221 | lh->offset_in_dwz = cu->per_cu->is_dwz; | |
17222 | ||
3019eac3 | 17223 | line_ptr = section->buffer + offset; |
debd256d | 17224 | |
a738430d | 17225 | /* Read in the header. */ |
6e70227d | 17226 | lh->total_length = |
c764a876 DE |
17227 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
17228 | &bytes_read, &offset_size); | |
debd256d | 17229 | line_ptr += bytes_read; |
3019eac3 | 17230 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 17231 | { |
4d3c2250 | 17232 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
2f324bf6 | 17233 | do_cleanups (back_to); |
debd256d JB |
17234 | return 0; |
17235 | } | |
17236 | lh->statement_program_end = line_ptr + lh->total_length; | |
17237 | lh->version = read_2_bytes (abfd, line_ptr); | |
17238 | line_ptr += 2; | |
cd366ee8 DE |
17239 | if (lh->version > 4) |
17240 | { | |
17241 | /* This is a version we don't understand. The format could have | |
17242 | changed in ways we don't handle properly so just punt. */ | |
17243 | complaint (&symfile_complaints, | |
17244 | _("unsupported version in .debug_line section")); | |
17245 | return NULL; | |
17246 | } | |
c764a876 DE |
17247 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
17248 | line_ptr += offset_size; | |
debd256d JB |
17249 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
17250 | line_ptr += 1; | |
2dc7f7b3 TT |
17251 | if (lh->version >= 4) |
17252 | { | |
17253 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
17254 | line_ptr += 1; | |
17255 | } | |
17256 | else | |
17257 | lh->maximum_ops_per_instruction = 1; | |
17258 | ||
17259 | if (lh->maximum_ops_per_instruction == 0) | |
17260 | { | |
17261 | lh->maximum_ops_per_instruction = 1; | |
17262 | complaint (&symfile_complaints, | |
3e43a32a MS |
17263 | _("invalid maximum_ops_per_instruction " |
17264 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
17265 | } |
17266 | ||
debd256d JB |
17267 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
17268 | line_ptr += 1; | |
17269 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
17270 | line_ptr += 1; | |
17271 | lh->line_range = read_1_byte (abfd, line_ptr); | |
17272 | line_ptr += 1; | |
17273 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
17274 | line_ptr += 1; | |
17275 | lh->standard_opcode_lengths | |
fe1b8b76 | 17276 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
17277 | |
17278 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
17279 | for (i = 1; i < lh->opcode_base; ++i) | |
17280 | { | |
17281 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
17282 | line_ptr += 1; | |
17283 | } | |
17284 | ||
a738430d | 17285 | /* Read directory table. */ |
9b1c24c8 | 17286 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
17287 | { |
17288 | line_ptr += bytes_read; | |
17289 | add_include_dir (lh, cur_dir); | |
17290 | } | |
17291 | line_ptr += bytes_read; | |
17292 | ||
a738430d | 17293 | /* Read file name table. */ |
9b1c24c8 | 17294 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
17295 | { |
17296 | unsigned int dir_index, mod_time, length; | |
17297 | ||
17298 | line_ptr += bytes_read; | |
17299 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17300 | line_ptr += bytes_read; | |
17301 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17302 | line_ptr += bytes_read; | |
17303 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17304 | line_ptr += bytes_read; | |
17305 | ||
17306 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
17307 | } | |
17308 | line_ptr += bytes_read; | |
6e70227d | 17309 | lh->statement_program_start = line_ptr; |
debd256d | 17310 | |
3019eac3 | 17311 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 17312 | complaint (&symfile_complaints, |
3e43a32a MS |
17313 | _("line number info header doesn't " |
17314 | "fit in `.debug_line' section")); | |
debd256d JB |
17315 | |
17316 | discard_cleanups (back_to); | |
17317 | return lh; | |
17318 | } | |
c906108c | 17319 | |
c6da4cef DE |
17320 | /* Subroutine of dwarf_decode_lines to simplify it. |
17321 | Return the file name of the psymtab for included file FILE_INDEX | |
17322 | in line header LH of PST. | |
17323 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17324 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
17325 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
17326 | ||
17327 | The function creates dangling cleanup registration. */ | |
c6da4cef | 17328 | |
d521ce57 | 17329 | static const char * |
c6da4cef DE |
17330 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
17331 | const struct partial_symtab *pst, | |
17332 | const char *comp_dir) | |
17333 | { | |
17334 | const struct file_entry fe = lh->file_names [file_index]; | |
d521ce57 TT |
17335 | const char *include_name = fe.name; |
17336 | const char *include_name_to_compare = include_name; | |
17337 | const char *dir_name = NULL; | |
72b9f47f TT |
17338 | const char *pst_filename; |
17339 | char *copied_name = NULL; | |
c6da4cef DE |
17340 | int file_is_pst; |
17341 | ||
17342 | if (fe.dir_index) | |
17343 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
17344 | ||
17345 | if (!IS_ABSOLUTE_PATH (include_name) | |
17346 | && (dir_name != NULL || comp_dir != NULL)) | |
17347 | { | |
17348 | /* Avoid creating a duplicate psymtab for PST. | |
17349 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
17350 | Before we do the comparison, however, we need to account | |
17351 | for DIR_NAME and COMP_DIR. | |
17352 | First prepend dir_name (if non-NULL). If we still don't | |
17353 | have an absolute path prepend comp_dir (if non-NULL). | |
17354 | However, the directory we record in the include-file's | |
17355 | psymtab does not contain COMP_DIR (to match the | |
17356 | corresponding symtab(s)). | |
17357 | ||
17358 | Example: | |
17359 | ||
17360 | bash$ cd /tmp | |
17361 | bash$ gcc -g ./hello.c | |
17362 | include_name = "hello.c" | |
17363 | dir_name = "." | |
17364 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
17365 | DW_AT_name = "./hello.c" |
17366 | ||
17367 | */ | |
c6da4cef DE |
17368 | |
17369 | if (dir_name != NULL) | |
17370 | { | |
d521ce57 TT |
17371 | char *tem = concat (dir_name, SLASH_STRING, |
17372 | include_name, (char *)NULL); | |
17373 | ||
17374 | make_cleanup (xfree, tem); | |
17375 | include_name = tem; | |
c6da4cef | 17376 | include_name_to_compare = include_name; |
c6da4cef DE |
17377 | } |
17378 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
17379 | { | |
d521ce57 TT |
17380 | char *tem = concat (comp_dir, SLASH_STRING, |
17381 | include_name, (char *)NULL); | |
17382 | ||
17383 | make_cleanup (xfree, tem); | |
17384 | include_name_to_compare = tem; | |
c6da4cef DE |
17385 | } |
17386 | } | |
17387 | ||
17388 | pst_filename = pst->filename; | |
17389 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
17390 | { | |
72b9f47f TT |
17391 | copied_name = concat (pst->dirname, SLASH_STRING, |
17392 | pst_filename, (char *)NULL); | |
17393 | pst_filename = copied_name; | |
c6da4cef DE |
17394 | } |
17395 | ||
1e3fad37 | 17396 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 17397 | |
72b9f47f TT |
17398 | if (copied_name != NULL) |
17399 | xfree (copied_name); | |
c6da4cef DE |
17400 | |
17401 | if (file_is_pst) | |
17402 | return NULL; | |
17403 | return include_name; | |
17404 | } | |
17405 | ||
c91513d8 PP |
17406 | /* Ignore this record_line request. */ |
17407 | ||
17408 | static void | |
17409 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
17410 | { | |
17411 | return; | |
17412 | } | |
17413 | ||
a05a36a5 DE |
17414 | /* Return non-zero if we should add LINE to the line number table. |
17415 | LINE is the line to add, LAST_LINE is the last line that was added, | |
17416 | LAST_SUBFILE is the subfile for LAST_LINE. | |
17417 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
17418 | had a non-zero discriminator. | |
17419 | ||
17420 | We have to be careful in the presence of discriminators. | |
17421 | E.g., for this line: | |
17422 | ||
17423 | for (i = 0; i < 100000; i++); | |
17424 | ||
17425 | clang can emit four line number entries for that one line, | |
17426 | each with a different discriminator. | |
17427 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
17428 | ||
17429 | However, we want gdb to coalesce all four entries into one. | |
17430 | Otherwise the user could stepi into the middle of the line and | |
17431 | gdb would get confused about whether the pc really was in the | |
17432 | middle of the line. | |
17433 | ||
17434 | Things are further complicated by the fact that two consecutive | |
17435 | line number entries for the same line is a heuristic used by gcc | |
17436 | to denote the end of the prologue. So we can't just discard duplicate | |
17437 | entries, we have to be selective about it. The heuristic we use is | |
17438 | that we only collapse consecutive entries for the same line if at least | |
17439 | one of those entries has a non-zero discriminator. PR 17276. | |
17440 | ||
17441 | Note: Addresses in the line number state machine can never go backwards | |
17442 | within one sequence, thus this coalescing is ok. */ | |
17443 | ||
17444 | static int | |
17445 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
17446 | int line_has_non_zero_discriminator, | |
17447 | struct subfile *last_subfile) | |
17448 | { | |
17449 | if (current_subfile != last_subfile) | |
17450 | return 1; | |
17451 | if (line != last_line) | |
17452 | return 1; | |
17453 | /* Same line for the same file that we've seen already. | |
17454 | As a last check, for pr 17276, only record the line if the line | |
17455 | has never had a non-zero discriminator. */ | |
17456 | if (!line_has_non_zero_discriminator) | |
17457 | return 1; | |
17458 | return 0; | |
17459 | } | |
17460 | ||
252a6764 DE |
17461 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
17462 | in the line table of subfile SUBFILE. */ | |
17463 | ||
17464 | static void | |
17465 | dwarf_record_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
17466 | unsigned int line, CORE_ADDR address, | |
17467 | record_line_ftype p_record_line) | |
17468 | { | |
17469 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
17470 | ||
d5962de5 | 17471 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
17472 | } |
17473 | ||
17474 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
17475 | Mark the end of a set of line number records. | |
17476 | The arguments are the same as for dwarf_record_line. | |
17477 | If SUBFILE is NULL the request is ignored. */ | |
17478 | ||
17479 | static void | |
17480 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
17481 | CORE_ADDR address, record_line_ftype p_record_line) | |
17482 | { | |
17483 | if (subfile != NULL) | |
17484 | dwarf_record_line (gdbarch, subfile, 0, address, p_record_line); | |
17485 | } | |
17486 | ||
f3f5162e DE |
17487 | /* Subroutine of dwarf_decode_lines to simplify it. |
17488 | Process the line number information in LH. */ | |
debd256d | 17489 | |
c906108c | 17490 | static void |
43f3e411 DE |
17491 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
17492 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 17493 | { |
d521ce57 TT |
17494 | const gdb_byte *line_ptr, *extended_end; |
17495 | const gdb_byte *line_end; | |
a8c50c1f | 17496 | unsigned int bytes_read, extended_len; |
699ca60a | 17497 | unsigned char op_code, extended_op; |
e142c38c DJ |
17498 | CORE_ADDR baseaddr; |
17499 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 17500 | bfd *abfd = objfile->obfd; |
fbf65064 | 17501 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
f3f5162e | 17502 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
17503 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
17504 | = record_line; | |
e142c38c DJ |
17505 | |
17506 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 17507 | |
debd256d JB |
17508 | line_ptr = lh->statement_program_start; |
17509 | line_end = lh->statement_program_end; | |
c906108c SS |
17510 | |
17511 | /* Read the statement sequences until there's nothing left. */ | |
17512 | while (line_ptr < line_end) | |
17513 | { | |
3e29f34a MR |
17514 | /* State machine registers. Call `gdbarch_adjust_dwarf2_line' |
17515 | on the initial 0 address as if there was a line entry for it | |
17516 | so that the backend has a chance to adjust it and also record | |
17517 | it in case it needs it. This is currently used by MIPS code, | |
17518 | cf. `mips_adjust_dwarf2_line'. */ | |
17519 | CORE_ADDR address = gdbarch_adjust_dwarf2_line (gdbarch, 0, 0); | |
c906108c SS |
17520 | unsigned int file = 1; |
17521 | unsigned int line = 1; | |
debd256d | 17522 | int is_stmt = lh->default_is_stmt; |
c906108c | 17523 | int end_sequence = 0; |
2dc7f7b3 | 17524 | unsigned char op_index = 0; |
a05a36a5 DE |
17525 | unsigned int discriminator = 0; |
17526 | /* The last line number that was recorded, used to coalesce | |
17527 | consecutive entries for the same line. This can happen, for | |
17528 | example, when discriminators are present. PR 17276. */ | |
17529 | unsigned int last_line = 0; | |
17530 | int line_has_non_zero_discriminator = 0; | |
c906108c | 17531 | |
aaa75496 | 17532 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 17533 | { |
aaa75496 | 17534 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
17535 | /* lh->include_dirs and lh->file_names are 0-based, but the |
17536 | directory and file name numbers in the statement program | |
17537 | are 1-based. */ | |
17538 | struct file_entry *fe = &lh->file_names[file - 1]; | |
d521ce57 | 17539 | const char *dir = NULL; |
a738430d | 17540 | |
debd256d JB |
17541 | if (fe->dir_index) |
17542 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb | 17543 | |
4d663531 | 17544 | dwarf2_start_subfile (fe->name, dir); |
c906108c SS |
17545 | } |
17546 | ||
a738430d | 17547 | /* Decode the table. */ |
c5aa993b | 17548 | while (!end_sequence) |
c906108c SS |
17549 | { |
17550 | op_code = read_1_byte (abfd, line_ptr); | |
17551 | line_ptr += 1; | |
59205f5a JB |
17552 | if (line_ptr > line_end) |
17553 | { | |
17554 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
17555 | break; | |
17556 | } | |
9aa1fe7e | 17557 | |
debd256d | 17558 | if (op_code >= lh->opcode_base) |
6e70227d | 17559 | { |
8e07a239 | 17560 | /* Special opcode. */ |
699ca60a | 17561 | unsigned char adj_opcode; |
3e29f34a | 17562 | CORE_ADDR addr_adj; |
a05a36a5 | 17563 | int line_delta; |
8e07a239 | 17564 | |
debd256d | 17565 | adj_opcode = op_code - lh->opcode_base; |
3e29f34a | 17566 | addr_adj = (((op_index + (adj_opcode / lh->line_range)) |
2dc7f7b3 TT |
17567 | / lh->maximum_ops_per_instruction) |
17568 | * lh->minimum_instruction_length); | |
3e29f34a | 17569 | address += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); |
2dc7f7b3 TT |
17570 | op_index = ((op_index + (adj_opcode / lh->line_range)) |
17571 | % lh->maximum_ops_per_instruction); | |
a05a36a5 DE |
17572 | line_delta = lh->line_base + (adj_opcode % lh->line_range); |
17573 | line += line_delta; | |
17574 | if (line_delta != 0) | |
17575 | line_has_non_zero_discriminator = discriminator != 0; | |
59205f5a | 17576 | if (lh->num_file_names < file || file == 0) |
25e43795 | 17577 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
17578 | /* For now we ignore lines not starting on an |
17579 | instruction boundary. */ | |
17580 | else if (op_index == 0) | |
25e43795 DJ |
17581 | { |
17582 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 17583 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
17584 | { |
17585 | if (last_subfile != current_subfile) | |
17586 | { | |
252a6764 DE |
17587 | dwarf_finish_line (gdbarch, last_subfile, |
17588 | address, p_record_line); | |
fbf65064 | 17589 | } |
a05a36a5 DE |
17590 | if (dwarf_record_line_p (line, last_line, |
17591 | line_has_non_zero_discriminator, | |
17592 | last_subfile)) | |
17593 | { | |
17594 | dwarf_record_line (gdbarch, current_subfile, | |
17595 | line, address, p_record_line); | |
17596 | } | |
17597 | last_subfile = current_subfile; | |
17598 | last_line = line; | |
366da635 | 17599 | } |
25e43795 | 17600 | } |
a05a36a5 | 17601 | discriminator = 0; |
9aa1fe7e GK |
17602 | } |
17603 | else switch (op_code) | |
c906108c SS |
17604 | { |
17605 | case DW_LNS_extended_op: | |
3e43a32a MS |
17606 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
17607 | &bytes_read); | |
473b7be6 | 17608 | line_ptr += bytes_read; |
a8c50c1f | 17609 | extended_end = line_ptr + extended_len; |
c906108c SS |
17610 | extended_op = read_1_byte (abfd, line_ptr); |
17611 | line_ptr += 1; | |
17612 | switch (extended_op) | |
17613 | { | |
17614 | case DW_LNE_end_sequence: | |
c91513d8 | 17615 | p_record_line = record_line; |
c906108c | 17616 | end_sequence = 1; |
c906108c SS |
17617 | break; |
17618 | case DW_LNE_set_address: | |
e7c27a73 | 17619 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 | 17620 | |
c3b7b696 YQ |
17621 | /* If address < lowpc then it's not a usable value, it's |
17622 | outside the pc range of the CU. However, we restrict | |
17623 | the test to only address values of zero to preserve | |
17624 | GDB's previous behaviour which is to handle the specific | |
17625 | case of a function being GC'd by the linker. */ | |
17626 | if (address == 0 && address < lowpc) | |
c91513d8 PP |
17627 | { |
17628 | /* This line table is for a function which has been | |
17629 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
17630 | ||
17631 | long line_offset | |
36586728 | 17632 | = line_ptr - get_debug_line_section (cu)->buffer; |
c91513d8 PP |
17633 | |
17634 | complaint (&symfile_complaints, | |
17635 | _(".debug_line address at offset 0x%lx is 0 " | |
17636 | "[in module %s]"), | |
4262abfb | 17637 | line_offset, objfile_name (objfile)); |
c91513d8 | 17638 | p_record_line = noop_record_line; |
37780ee5 DE |
17639 | /* Note: p_record_line is left as noop_record_line |
17640 | until we see DW_LNE_end_sequence. */ | |
c91513d8 PP |
17641 | } |
17642 | ||
2dc7f7b3 | 17643 | op_index = 0; |
107d2387 AC |
17644 | line_ptr += bytes_read; |
17645 | address += baseaddr; | |
3e29f34a | 17646 | address = gdbarch_adjust_dwarf2_line (gdbarch, address, 0); |
c906108c SS |
17647 | break; |
17648 | case DW_LNE_define_file: | |
debd256d | 17649 | { |
d521ce57 | 17650 | const char *cur_file; |
debd256d | 17651 | unsigned int dir_index, mod_time, length; |
6e70227d | 17652 | |
3e43a32a MS |
17653 | cur_file = read_direct_string (abfd, line_ptr, |
17654 | &bytes_read); | |
debd256d JB |
17655 | line_ptr += bytes_read; |
17656 | dir_index = | |
17657 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17658 | line_ptr += bytes_read; | |
17659 | mod_time = | |
17660 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17661 | line_ptr += bytes_read; | |
17662 | length = | |
17663 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17664 | line_ptr += bytes_read; | |
17665 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
17666 | } | |
c906108c | 17667 | break; |
d0c6ba3d CC |
17668 | case DW_LNE_set_discriminator: |
17669 | /* The discriminator is not interesting to the debugger; | |
a05a36a5 DE |
17670 | just ignore it. We still need to check its value though: |
17671 | if there are consecutive entries for the same | |
17672 | (non-prologue) line we want to coalesce them. | |
17673 | PR 17276. */ | |
17674 | discriminator = read_unsigned_leb128 (abfd, line_ptr, | |
17675 | &bytes_read); | |
17676 | line_has_non_zero_discriminator |= discriminator != 0; | |
17677 | line_ptr += bytes_read; | |
d0c6ba3d | 17678 | break; |
c906108c | 17679 | default: |
4d3c2250 | 17680 | complaint (&symfile_complaints, |
e2e0b3e5 | 17681 | _("mangled .debug_line section")); |
debd256d | 17682 | return; |
c906108c | 17683 | } |
a8c50c1f DJ |
17684 | /* Make sure that we parsed the extended op correctly. If e.g. |
17685 | we expected a different address size than the producer used, | |
17686 | we may have read the wrong number of bytes. */ | |
17687 | if (line_ptr != extended_end) | |
17688 | { | |
17689 | complaint (&symfile_complaints, | |
17690 | _("mangled .debug_line section")); | |
17691 | return; | |
17692 | } | |
c906108c SS |
17693 | break; |
17694 | case DW_LNS_copy: | |
59205f5a | 17695 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
17696 | dwarf2_debug_line_missing_file_complaint (); |
17697 | else | |
366da635 | 17698 | { |
25e43795 | 17699 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 17700 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
17701 | { |
17702 | if (last_subfile != current_subfile) | |
17703 | { | |
252a6764 DE |
17704 | dwarf_finish_line (gdbarch, last_subfile, |
17705 | address, p_record_line); | |
fbf65064 | 17706 | } |
a05a36a5 DE |
17707 | if (dwarf_record_line_p (line, last_line, |
17708 | line_has_non_zero_discriminator, | |
17709 | last_subfile)) | |
17710 | { | |
17711 | dwarf_record_line (gdbarch, current_subfile, | |
17712 | line, address, p_record_line); | |
17713 | } | |
17714 | last_subfile = current_subfile; | |
17715 | last_line = line; | |
fbf65064 | 17716 | } |
366da635 | 17717 | } |
a05a36a5 | 17718 | discriminator = 0; |
c906108c SS |
17719 | break; |
17720 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
17721 | { |
17722 | CORE_ADDR adjust | |
17723 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
3e29f34a | 17724 | CORE_ADDR addr_adj; |
2dc7f7b3 | 17725 | |
3e29f34a | 17726 | addr_adj = (((op_index + adjust) |
2dc7f7b3 TT |
17727 | / lh->maximum_ops_per_instruction) |
17728 | * lh->minimum_instruction_length); | |
3e29f34a | 17729 | address += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); |
2dc7f7b3 TT |
17730 | op_index = ((op_index + adjust) |
17731 | % lh->maximum_ops_per_instruction); | |
17732 | line_ptr += bytes_read; | |
17733 | } | |
c906108c SS |
17734 | break; |
17735 | case DW_LNS_advance_line: | |
a05a36a5 DE |
17736 | { |
17737 | int line_delta | |
17738 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
17739 | ||
17740 | line += line_delta; | |
17741 | if (line_delta != 0) | |
17742 | line_has_non_zero_discriminator = discriminator != 0; | |
17743 | line_ptr += bytes_read; | |
17744 | } | |
c906108c SS |
17745 | break; |
17746 | case DW_LNS_set_file: | |
debd256d | 17747 | { |
a738430d MK |
17748 | /* The arrays lh->include_dirs and lh->file_names are |
17749 | 0-based, but the directory and file name numbers in | |
17750 | the statement program are 1-based. */ | |
debd256d | 17751 | struct file_entry *fe; |
d521ce57 | 17752 | const char *dir = NULL; |
a738430d | 17753 | |
debd256d JB |
17754 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
17755 | line_ptr += bytes_read; | |
59205f5a | 17756 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
17757 | dwarf2_debug_line_missing_file_complaint (); |
17758 | else | |
17759 | { | |
17760 | fe = &lh->file_names[file - 1]; | |
17761 | if (fe->dir_index) | |
17762 | dir = lh->include_dirs[fe->dir_index - 1]; | |
17763 | if (!decode_for_pst_p) | |
17764 | { | |
17765 | last_subfile = current_subfile; | |
a05a36a5 | 17766 | line_has_non_zero_discriminator = discriminator != 0; |
4d663531 | 17767 | dwarf2_start_subfile (fe->name, dir); |
25e43795 DJ |
17768 | } |
17769 | } | |
debd256d | 17770 | } |
c906108c SS |
17771 | break; |
17772 | case DW_LNS_set_column: | |
0ad93d4f | 17773 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
17774 | line_ptr += bytes_read; |
17775 | break; | |
17776 | case DW_LNS_negate_stmt: | |
17777 | is_stmt = (!is_stmt); | |
17778 | break; | |
17779 | case DW_LNS_set_basic_block: | |
c906108c | 17780 | break; |
c2c6d25f JM |
17781 | /* Add to the address register of the state machine the |
17782 | address increment value corresponding to special opcode | |
a738430d MK |
17783 | 255. I.e., this value is scaled by the minimum |
17784 | instruction length since special opcode 255 would have | |
b021a221 | 17785 | scaled the increment. */ |
c906108c | 17786 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
17787 | { |
17788 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
3e29f34a | 17789 | CORE_ADDR addr_adj; |
2dc7f7b3 | 17790 | |
3e29f34a | 17791 | addr_adj = (((op_index + adjust) |
2dc7f7b3 TT |
17792 | / lh->maximum_ops_per_instruction) |
17793 | * lh->minimum_instruction_length); | |
3e29f34a | 17794 | address += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); |
2dc7f7b3 TT |
17795 | op_index = ((op_index + adjust) |
17796 | % lh->maximum_ops_per_instruction); | |
17797 | } | |
c906108c SS |
17798 | break; |
17799 | case DW_LNS_fixed_advance_pc: | |
3e29f34a MR |
17800 | { |
17801 | CORE_ADDR addr_adj; | |
17802 | ||
17803 | addr_adj = read_2_bytes (abfd, line_ptr); | |
17804 | address += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
17805 | op_index = 0; | |
17806 | line_ptr += 2; | |
17807 | } | |
c906108c | 17808 | break; |
9aa1fe7e | 17809 | default: |
a738430d MK |
17810 | { |
17811 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 17812 | int i; |
a738430d | 17813 | |
debd256d | 17814 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
17815 | { |
17816 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17817 | line_ptr += bytes_read; | |
17818 | } | |
17819 | } | |
c906108c SS |
17820 | } |
17821 | } | |
59205f5a JB |
17822 | if (lh->num_file_names < file || file == 0) |
17823 | dwarf2_debug_line_missing_file_complaint (); | |
17824 | else | |
17825 | { | |
17826 | lh->file_names[file - 1].included_p = 1; | |
17827 | if (!decode_for_pst_p) | |
fbf65064 | 17828 | { |
252a6764 DE |
17829 | dwarf_finish_line (gdbarch, current_subfile, address, |
17830 | p_record_line); | |
fbf65064 | 17831 | } |
59205f5a | 17832 | } |
c906108c | 17833 | } |
f3f5162e DE |
17834 | } |
17835 | ||
17836 | /* Decode the Line Number Program (LNP) for the given line_header | |
17837 | structure and CU. The actual information extracted and the type | |
17838 | of structures created from the LNP depends on the value of PST. | |
17839 | ||
17840 | 1. If PST is NULL, then this procedure uses the data from the program | |
17841 | to create all necessary symbol tables, and their linetables. | |
17842 | ||
17843 | 2. If PST is not NULL, this procedure reads the program to determine | |
17844 | the list of files included by the unit represented by PST, and | |
17845 | builds all the associated partial symbol tables. | |
17846 | ||
17847 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17848 | It is used for relative paths in the line table. | |
17849 | NOTE: When processing partial symtabs (pst != NULL), | |
17850 | comp_dir == pst->dirname. | |
17851 | ||
17852 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
17853 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
17854 | symtab we don't use it in the name of the psymtabs we create. | |
17855 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
17856 | A good testcase for this is mb-inline.exp. |
17857 | ||
527f3840 JK |
17858 | LOWPC is the lowest address in CU (or 0 if not known). |
17859 | ||
17860 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
17861 | for its PC<->lines mapping information. Otherwise only the filename | |
17862 | table is read in. */ | |
f3f5162e DE |
17863 | |
17864 | static void | |
17865 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 17866 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 17867 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e DE |
17868 | { |
17869 | struct objfile *objfile = cu->objfile; | |
17870 | const int decode_for_pst_p = (pst != NULL); | |
f3f5162e | 17871 | |
527f3840 JK |
17872 | if (decode_mapping) |
17873 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
17874 | |
17875 | if (decode_for_pst_p) | |
17876 | { | |
17877 | int file_index; | |
17878 | ||
17879 | /* Now that we're done scanning the Line Header Program, we can | |
17880 | create the psymtab of each included file. */ | |
17881 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
17882 | if (lh->file_names[file_index].included_p == 1) | |
17883 | { | |
d521ce57 | 17884 | const char *include_name = |
c6da4cef DE |
17885 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
17886 | if (include_name != NULL) | |
aaa75496 JB |
17887 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
17888 | } | |
17889 | } | |
cb1df416 DJ |
17890 | else |
17891 | { | |
17892 | /* Make sure a symtab is created for every file, even files | |
17893 | which contain only variables (i.e. no code with associated | |
17894 | line numbers). */ | |
43f3e411 | 17895 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 17896 | int i; |
cb1df416 DJ |
17897 | |
17898 | for (i = 0; i < lh->num_file_names; i++) | |
17899 | { | |
d521ce57 | 17900 | const char *dir = NULL; |
f3f5162e | 17901 | struct file_entry *fe; |
9a619af0 | 17902 | |
cb1df416 DJ |
17903 | fe = &lh->file_names[i]; |
17904 | if (fe->dir_index) | |
17905 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4d663531 | 17906 | dwarf2_start_subfile (fe->name, dir); |
cb1df416 | 17907 | |
cb1df416 | 17908 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
17909 | { |
17910 | current_subfile->symtab | |
17911 | = allocate_symtab (cust, current_subfile->name); | |
17912 | } | |
cb1df416 DJ |
17913 | fe->symtab = current_subfile->symtab; |
17914 | } | |
17915 | } | |
c906108c SS |
17916 | } |
17917 | ||
17918 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
17919 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 17920 | or NULL if not known. |
c906108c SS |
17921 | This routine tries to keep line numbers from identical absolute and |
17922 | relative file names in a common subfile. | |
17923 | ||
17924 | Using the `list' example from the GDB testsuite, which resides in | |
17925 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
17926 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
17927 | ||
c5aa993b | 17928 | DW_AT_name: /srcdir/list0.c |
4d663531 | 17929 | DW_AT_comp_dir: /compdir |
357e46e7 | 17930 | files.files[0].name: list0.h |
c5aa993b | 17931 | files.files[0].dir: /srcdir |
357e46e7 | 17932 | files.files[1].name: list0.c |
c5aa993b | 17933 | files.files[1].dir: /srcdir |
c906108c SS |
17934 | |
17935 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
17936 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
17937 | start_subfile will ensure that this happens provided that we pass the | |
17938 | concatenation of files.files[1].dir and files.files[1].name as the | |
17939 | subfile's name. */ | |
c906108c SS |
17940 | |
17941 | static void | |
4d663531 | 17942 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 17943 | { |
d521ce57 | 17944 | char *copy = NULL; |
4f1520fb | 17945 | |
4d663531 | 17946 | /* In order not to lose the line information directory, |
4f1520fb FR |
17947 | we concatenate it to the filename when it makes sense. |
17948 | Note that the Dwarf3 standard says (speaking of filenames in line | |
17949 | information): ``The directory index is ignored for file names | |
17950 | that represent full path names''. Thus ignoring dirname in the | |
17951 | `else' branch below isn't an issue. */ | |
c906108c | 17952 | |
d5166ae1 | 17953 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
17954 | { |
17955 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
17956 | filename = copy; | |
17957 | } | |
c906108c | 17958 | |
4d663531 | 17959 | start_subfile (filename); |
4f1520fb | 17960 | |
d521ce57 TT |
17961 | if (copy != NULL) |
17962 | xfree (copy); | |
c906108c SS |
17963 | } |
17964 | ||
f4dc4d17 DE |
17965 | /* Start a symtab for DWARF. |
17966 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
17967 | ||
43f3e411 | 17968 | static struct compunit_symtab * |
f4dc4d17 | 17969 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 17970 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 17971 | { |
43f3e411 DE |
17972 | struct compunit_symtab *cust |
17973 | = start_symtab (cu->objfile, name, comp_dir, low_pc); | |
17974 | ||
f4dc4d17 DE |
17975 | record_debugformat ("DWARF 2"); |
17976 | record_producer (cu->producer); | |
17977 | ||
17978 | /* We assume that we're processing GCC output. */ | |
17979 | processing_gcc_compilation = 2; | |
17980 | ||
4d4ec4e5 | 17981 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
17982 | |
17983 | return cust; | |
f4dc4d17 DE |
17984 | } |
17985 | ||
4c2df51b DJ |
17986 | static void |
17987 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 17988 | struct dwarf2_cu *cu) |
4c2df51b | 17989 | { |
e7c27a73 DJ |
17990 | struct objfile *objfile = cu->objfile; |
17991 | struct comp_unit_head *cu_header = &cu->header; | |
17992 | ||
4c2df51b DJ |
17993 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
17994 | code here to turn a symbol with DW_AT_external and a | |
17995 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
17996 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
17997 | with some versions of binutils) where shared libraries could have | |
17998 | relocations against symbols in their debug information - the | |
17999 | minimal symbol would have the right address, but the debug info | |
18000 | would not. It's no longer necessary, because we will explicitly | |
18001 | apply relocations when we read in the debug information now. */ | |
18002 | ||
18003 | /* A DW_AT_location attribute with no contents indicates that a | |
18004 | variable has been optimized away. */ | |
18005 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
18006 | { | |
f1e6e072 | 18007 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
18008 | return; |
18009 | } | |
18010 | ||
18011 | /* Handle one degenerate form of location expression specially, to | |
18012 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
18013 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
18014 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
18015 | |
18016 | if (attr_form_is_block (attr) | |
3019eac3 DE |
18017 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
18018 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
18019 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
18020 | && (DW_BLOCK (attr)->size | |
18021 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 18022 | { |
891d2f0b | 18023 | unsigned int dummy; |
4c2df51b | 18024 | |
3019eac3 DE |
18025 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
18026 | SYMBOL_VALUE_ADDRESS (sym) = | |
18027 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
18028 | else | |
18029 | SYMBOL_VALUE_ADDRESS (sym) = | |
18030 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 18031 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
18032 | fixup_symbol_section (sym, objfile); |
18033 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
18034 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
18035 | return; |
18036 | } | |
18037 | ||
18038 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
18039 | expression evaluator, and use LOC_COMPUTED only when necessary | |
18040 | (i.e. when the value of a register or memory location is | |
18041 | referenced, or a thread-local block, etc.). Then again, it might | |
18042 | not be worthwhile. I'm assuming that it isn't unless performance | |
18043 | or memory numbers show me otherwise. */ | |
18044 | ||
f1e6e072 | 18045 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 18046 | |
f1e6e072 | 18047 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 18048 | cu->has_loclist = 1; |
4c2df51b DJ |
18049 | } |
18050 | ||
c906108c SS |
18051 | /* Given a pointer to a DWARF information entry, figure out if we need |
18052 | to make a symbol table entry for it, and if so, create a new entry | |
18053 | and return a pointer to it. | |
18054 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
18055 | used the passed type. |
18056 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
18057 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
18058 | |
18059 | static struct symbol * | |
34eaf542 TT |
18060 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
18061 | struct symbol *space) | |
c906108c | 18062 | { |
e7c27a73 | 18063 | struct objfile *objfile = cu->objfile; |
3e29f34a | 18064 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 18065 | struct symbol *sym = NULL; |
15d034d0 | 18066 | const char *name; |
c906108c SS |
18067 | struct attribute *attr = NULL; |
18068 | struct attribute *attr2 = NULL; | |
e142c38c | 18069 | CORE_ADDR baseaddr; |
e37fd15a SW |
18070 | struct pending **list_to_add = NULL; |
18071 | ||
edb3359d | 18072 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
18073 | |
18074 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 18075 | |
94af9270 | 18076 | name = dwarf2_name (die, cu); |
c906108c SS |
18077 | if (name) |
18078 | { | |
94af9270 | 18079 | const char *linkagename; |
34eaf542 | 18080 | int suppress_add = 0; |
94af9270 | 18081 | |
34eaf542 TT |
18082 | if (space) |
18083 | sym = space; | |
18084 | else | |
e623cf5d | 18085 | sym = allocate_symbol (objfile); |
c906108c | 18086 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
18087 | |
18088 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 18089 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
18090 | linkagename = dwarf2_physname (name, die, cu); |
18091 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 18092 | |
f55ee35c JK |
18093 | /* Fortran does not have mangling standard and the mangling does differ |
18094 | between gfortran, iFort etc. */ | |
18095 | if (cu->language == language_fortran | |
b250c185 | 18096 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 18097 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 18098 | dwarf2_full_name (name, die, cu), |
29df156d | 18099 | NULL); |
f55ee35c | 18100 | |
c906108c | 18101 | /* Default assumptions. |
c5aa993b | 18102 | Use the passed type or decode it from the die. */ |
176620f1 | 18103 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 18104 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
18105 | if (type != NULL) |
18106 | SYMBOL_TYPE (sym) = type; | |
18107 | else | |
e7c27a73 | 18108 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
18109 | attr = dwarf2_attr (die, |
18110 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
18111 | cu); | |
c906108c SS |
18112 | if (attr) |
18113 | { | |
18114 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
18115 | } | |
cb1df416 | 18116 | |
edb3359d DJ |
18117 | attr = dwarf2_attr (die, |
18118 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
18119 | cu); | |
cb1df416 DJ |
18120 | if (attr) |
18121 | { | |
18122 | int file_index = DW_UNSND (attr); | |
9a619af0 | 18123 | |
cb1df416 DJ |
18124 | if (cu->line_header == NULL |
18125 | || file_index > cu->line_header->num_file_names) | |
18126 | complaint (&symfile_complaints, | |
18127 | _("file index out of range")); | |
1c3d648d | 18128 | else if (file_index > 0) |
cb1df416 DJ |
18129 | { |
18130 | struct file_entry *fe; | |
9a619af0 | 18131 | |
cb1df416 | 18132 | fe = &cu->line_header->file_names[file_index - 1]; |
08be3fe3 | 18133 | symbol_set_symtab (sym, fe->symtab); |
cb1df416 DJ |
18134 | } |
18135 | } | |
18136 | ||
c906108c SS |
18137 | switch (die->tag) |
18138 | { | |
18139 | case DW_TAG_label: | |
e142c38c | 18140 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 18141 | if (attr) |
3e29f34a MR |
18142 | { |
18143 | CORE_ADDR addr; | |
18144 | ||
18145 | addr = attr_value_as_address (attr); | |
18146 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
18147 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
18148 | } | |
0f5238ed TT |
18149 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
18150 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 18151 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 18152 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
18153 | break; |
18154 | case DW_TAG_subprogram: | |
18155 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18156 | finish_block. */ | |
f1e6e072 | 18157 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 18158 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
18159 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
18160 | || cu->language == language_ada) | |
c906108c | 18161 | { |
2cfa0c8d JB |
18162 | /* Subprograms marked external are stored as a global symbol. |
18163 | Ada subprograms, whether marked external or not, are always | |
18164 | stored as a global symbol, because we want to be able to | |
18165 | access them globally. For instance, we want to be able | |
18166 | to break on a nested subprogram without having to | |
18167 | specify the context. */ | |
e37fd15a | 18168 | list_to_add = &global_symbols; |
c906108c SS |
18169 | } |
18170 | else | |
18171 | { | |
e37fd15a | 18172 | list_to_add = cu->list_in_scope; |
c906108c SS |
18173 | } |
18174 | break; | |
edb3359d DJ |
18175 | case DW_TAG_inlined_subroutine: |
18176 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18177 | finish_block. */ | |
f1e6e072 | 18178 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 18179 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 18180 | list_to_add = cu->list_in_scope; |
edb3359d | 18181 | break; |
34eaf542 TT |
18182 | case DW_TAG_template_value_param: |
18183 | suppress_add = 1; | |
18184 | /* Fall through. */ | |
72929c62 | 18185 | case DW_TAG_constant: |
c906108c | 18186 | case DW_TAG_variable: |
254e6b9e | 18187 | case DW_TAG_member: |
0963b4bd MS |
18188 | /* Compilation with minimal debug info may result in |
18189 | variables with missing type entries. Change the | |
18190 | misleading `void' type to something sensible. */ | |
c906108c | 18191 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 18192 | SYMBOL_TYPE (sym) |
46bf5051 | 18193 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 18194 | |
e142c38c | 18195 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
18196 | /* In the case of DW_TAG_member, we should only be called for |
18197 | static const members. */ | |
18198 | if (die->tag == DW_TAG_member) | |
18199 | { | |
3863f96c DE |
18200 | /* dwarf2_add_field uses die_is_declaration, |
18201 | so we do the same. */ | |
254e6b9e DE |
18202 | gdb_assert (die_is_declaration (die, cu)); |
18203 | gdb_assert (attr); | |
18204 | } | |
c906108c SS |
18205 | if (attr) |
18206 | { | |
e7c27a73 | 18207 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 18208 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 18209 | if (!suppress_add) |
34eaf542 TT |
18210 | { |
18211 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 18212 | list_to_add = &global_symbols; |
34eaf542 | 18213 | else |
e37fd15a | 18214 | list_to_add = cu->list_in_scope; |
34eaf542 | 18215 | } |
c906108c SS |
18216 | break; |
18217 | } | |
e142c38c | 18218 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
18219 | if (attr) |
18220 | { | |
e7c27a73 | 18221 | var_decode_location (attr, sym, cu); |
e142c38c | 18222 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
18223 | |
18224 | /* Fortran explicitly imports any global symbols to the local | |
18225 | scope by DW_TAG_common_block. */ | |
18226 | if (cu->language == language_fortran && die->parent | |
18227 | && die->parent->tag == DW_TAG_common_block) | |
18228 | attr2 = NULL; | |
18229 | ||
caac4577 JG |
18230 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
18231 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
18232 | && !dwarf2_per_objfile->has_section_at_zero) | |
18233 | { | |
18234 | /* When a static variable is eliminated by the linker, | |
18235 | the corresponding debug information is not stripped | |
18236 | out, but the variable address is set to null; | |
18237 | do not add such variables into symbol table. */ | |
18238 | } | |
18239 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 18240 | { |
f55ee35c JK |
18241 | /* Workaround gfortran PR debug/40040 - it uses |
18242 | DW_AT_location for variables in -fPIC libraries which may | |
18243 | get overriden by other libraries/executable and get | |
18244 | a different address. Resolve it by the minimal symbol | |
18245 | which may come from inferior's executable using copy | |
18246 | relocation. Make this workaround only for gfortran as for | |
18247 | other compilers GDB cannot guess the minimal symbol | |
18248 | Fortran mangling kind. */ | |
18249 | if (cu->language == language_fortran && die->parent | |
18250 | && die->parent->tag == DW_TAG_module | |
18251 | && cu->producer | |
18252 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
f1e6e072 | 18253 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 18254 | |
1c809c68 TT |
18255 | /* A variable with DW_AT_external is never static, |
18256 | but it may be block-scoped. */ | |
18257 | list_to_add = (cu->list_in_scope == &file_symbols | |
18258 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 18259 | } |
c906108c | 18260 | else |
e37fd15a | 18261 | list_to_add = cu->list_in_scope; |
c906108c SS |
18262 | } |
18263 | else | |
18264 | { | |
18265 | /* We do not know the address of this symbol. | |
c5aa993b JM |
18266 | If it is an external symbol and we have type information |
18267 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
18268 | The address of the variable will then be determined from | |
18269 | the minimal symbol table whenever the variable is | |
18270 | referenced. */ | |
e142c38c | 18271 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
18272 | |
18273 | /* Fortran explicitly imports any global symbols to the local | |
18274 | scope by DW_TAG_common_block. */ | |
18275 | if (cu->language == language_fortran && die->parent | |
18276 | && die->parent->tag == DW_TAG_common_block) | |
18277 | { | |
18278 | /* SYMBOL_CLASS doesn't matter here because | |
18279 | read_common_block is going to reset it. */ | |
18280 | if (!suppress_add) | |
18281 | list_to_add = cu->list_in_scope; | |
18282 | } | |
18283 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
18284 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 18285 | { |
0fe7935b DJ |
18286 | /* A variable with DW_AT_external is never static, but it |
18287 | may be block-scoped. */ | |
18288 | list_to_add = (cu->list_in_scope == &file_symbols | |
18289 | ? &global_symbols : cu->list_in_scope); | |
18290 | ||
f1e6e072 | 18291 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 18292 | } |
442ddf59 JK |
18293 | else if (!die_is_declaration (die, cu)) |
18294 | { | |
18295 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
18296 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
18297 | if (!suppress_add) |
18298 | list_to_add = cu->list_in_scope; | |
442ddf59 | 18299 | } |
c906108c SS |
18300 | } |
18301 | break; | |
18302 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
18303 | /* If we are inside a function, mark this as an argument. If |
18304 | not, we might be looking at an argument to an inlined function | |
18305 | when we do not have enough information to show inlined frames; | |
18306 | pretend it's a local variable in that case so that the user can | |
18307 | still see it. */ | |
18308 | if (context_stack_depth > 0 | |
18309 | && context_stack[context_stack_depth - 1].name != NULL) | |
18310 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 18311 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
18312 | if (attr) |
18313 | { | |
e7c27a73 | 18314 | var_decode_location (attr, sym, cu); |
c906108c | 18315 | } |
e142c38c | 18316 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
18317 | if (attr) |
18318 | { | |
e7c27a73 | 18319 | dwarf2_const_value (attr, sym, cu); |
c906108c | 18320 | } |
f346a30d | 18321 | |
e37fd15a | 18322 | list_to_add = cu->list_in_scope; |
c906108c SS |
18323 | break; |
18324 | case DW_TAG_unspecified_parameters: | |
18325 | /* From varargs functions; gdb doesn't seem to have any | |
18326 | interest in this information, so just ignore it for now. | |
18327 | (FIXME?) */ | |
18328 | break; | |
34eaf542 TT |
18329 | case DW_TAG_template_type_param: |
18330 | suppress_add = 1; | |
18331 | /* Fall through. */ | |
c906108c | 18332 | case DW_TAG_class_type: |
680b30c7 | 18333 | case DW_TAG_interface_type: |
c906108c SS |
18334 | case DW_TAG_structure_type: |
18335 | case DW_TAG_union_type: | |
72019c9c | 18336 | case DW_TAG_set_type: |
c906108c | 18337 | case DW_TAG_enumeration_type: |
f1e6e072 | 18338 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 18339 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 18340 | |
63d06c5c | 18341 | { |
987504bb | 18342 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
18343 | really ever be static objects: otherwise, if you try |
18344 | to, say, break of a class's method and you're in a file | |
18345 | which doesn't mention that class, it won't work unless | |
18346 | the check for all static symbols in lookup_symbol_aux | |
18347 | saves you. See the OtherFileClass tests in | |
18348 | gdb.c++/namespace.exp. */ | |
18349 | ||
e37fd15a | 18350 | if (!suppress_add) |
34eaf542 | 18351 | { |
34eaf542 TT |
18352 | list_to_add = (cu->list_in_scope == &file_symbols |
18353 | && (cu->language == language_cplus | |
18354 | || cu->language == language_java) | |
18355 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 18356 | |
64382290 TT |
18357 | /* The semantics of C++ state that "struct foo { |
18358 | ... }" also defines a typedef for "foo". A Java | |
18359 | class declaration also defines a typedef for the | |
18360 | class. */ | |
18361 | if (cu->language == language_cplus | |
18362 | || cu->language == language_java | |
18363 | || cu->language == language_ada) | |
18364 | { | |
18365 | /* The symbol's name is already allocated along | |
18366 | with this objfile, so we don't need to | |
18367 | duplicate it for the type. */ | |
18368 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
18369 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
18370 | } | |
63d06c5c DC |
18371 | } |
18372 | } | |
c906108c SS |
18373 | break; |
18374 | case DW_TAG_typedef: | |
f1e6e072 | 18375 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 18376 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 18377 | list_to_add = cu->list_in_scope; |
63d06c5c | 18378 | break; |
c906108c | 18379 | case DW_TAG_base_type: |
a02abb62 | 18380 | case DW_TAG_subrange_type: |
f1e6e072 | 18381 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 18382 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 18383 | list_to_add = cu->list_in_scope; |
c906108c SS |
18384 | break; |
18385 | case DW_TAG_enumerator: | |
e142c38c | 18386 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
18387 | if (attr) |
18388 | { | |
e7c27a73 | 18389 | dwarf2_const_value (attr, sym, cu); |
c906108c | 18390 | } |
63d06c5c DC |
18391 | { |
18392 | /* NOTE: carlton/2003-11-10: See comment above in the | |
18393 | DW_TAG_class_type, etc. block. */ | |
18394 | ||
e142c38c | 18395 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
18396 | && (cu->language == language_cplus |
18397 | || cu->language == language_java) | |
e142c38c | 18398 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 18399 | } |
c906108c | 18400 | break; |
74921315 | 18401 | case DW_TAG_imported_declaration: |
5c4e30ca | 18402 | case DW_TAG_namespace: |
f1e6e072 | 18403 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 18404 | list_to_add = &global_symbols; |
5c4e30ca | 18405 | break; |
530e8392 KB |
18406 | case DW_TAG_module: |
18407 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
18408 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
18409 | list_to_add = &global_symbols; | |
18410 | break; | |
4357ac6c | 18411 | case DW_TAG_common_block: |
f1e6e072 | 18412 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
18413 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
18414 | add_symbol_to_list (sym, cu->list_in_scope); | |
18415 | break; | |
c906108c SS |
18416 | default: |
18417 | /* Not a tag we recognize. Hopefully we aren't processing | |
18418 | trash data, but since we must specifically ignore things | |
18419 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 18420 | this point. */ |
e2e0b3e5 | 18421 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 18422 | dwarf_tag_name (die->tag)); |
c906108c SS |
18423 | break; |
18424 | } | |
df8a16a1 | 18425 | |
e37fd15a SW |
18426 | if (suppress_add) |
18427 | { | |
18428 | sym->hash_next = objfile->template_symbols; | |
18429 | objfile->template_symbols = sym; | |
18430 | list_to_add = NULL; | |
18431 | } | |
18432 | ||
18433 | if (list_to_add != NULL) | |
18434 | add_symbol_to_list (sym, list_to_add); | |
18435 | ||
df8a16a1 DJ |
18436 | /* For the benefit of old versions of GCC, check for anonymous |
18437 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 18438 | if (!cu->processing_has_namespace_info |
94af9270 | 18439 | && cu->language == language_cplus) |
a10964d1 | 18440 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
18441 | } |
18442 | return (sym); | |
18443 | } | |
18444 | ||
34eaf542 TT |
18445 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
18446 | ||
18447 | static struct symbol * | |
18448 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
18449 | { | |
18450 | return new_symbol_full (die, type, cu, NULL); | |
18451 | } | |
18452 | ||
98bfdba5 PA |
18453 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
18454 | zero-extend it as appropriate for the symbol's type. The DWARF | |
18455 | standard (v4) is not entirely clear about the meaning of using | |
18456 | DW_FORM_dataN for a constant with a signed type, where the type is | |
18457 | wider than the data. The conclusion of a discussion on the DWARF | |
18458 | list was that this is unspecified. We choose to always zero-extend | |
18459 | because that is the interpretation long in use by GCC. */ | |
c906108c | 18460 | |
98bfdba5 | 18461 | static gdb_byte * |
ff39bb5e | 18462 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 18463 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 18464 | { |
e7c27a73 | 18465 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
18466 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
18467 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
18468 | LONGEST l = DW_UNSND (attr); |
18469 | ||
18470 | if (bits < sizeof (*value) * 8) | |
18471 | { | |
18472 | l &= ((LONGEST) 1 << bits) - 1; | |
18473 | *value = l; | |
18474 | } | |
18475 | else if (bits == sizeof (*value) * 8) | |
18476 | *value = l; | |
18477 | else | |
18478 | { | |
18479 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
18480 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
18481 | return bytes; | |
18482 | } | |
18483 | ||
18484 | return NULL; | |
18485 | } | |
18486 | ||
18487 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
18488 | the value does not fit in *VALUE, set *BYTES - either already | |
18489 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
18490 | or, set *BATON, if we translated the constant to a location | |
18491 | expression. */ | |
18492 | ||
18493 | static void | |
ff39bb5e | 18494 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
18495 | const char *name, struct obstack *obstack, |
18496 | struct dwarf2_cu *cu, | |
d521ce57 | 18497 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
18498 | struct dwarf2_locexpr_baton **baton) |
18499 | { | |
18500 | struct objfile *objfile = cu->objfile; | |
18501 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 18502 | struct dwarf_block *blk; |
98bfdba5 PA |
18503 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
18504 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
18505 | ||
18506 | *value = 0; | |
18507 | *bytes = NULL; | |
18508 | *baton = NULL; | |
c906108c SS |
18509 | |
18510 | switch (attr->form) | |
18511 | { | |
18512 | case DW_FORM_addr: | |
3019eac3 | 18513 | case DW_FORM_GNU_addr_index: |
ac56253d | 18514 | { |
ac56253d TT |
18515 | gdb_byte *data; |
18516 | ||
98bfdba5 PA |
18517 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
18518 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 18519 | cu_header->addr_size, |
98bfdba5 | 18520 | TYPE_LENGTH (type)); |
ac56253d TT |
18521 | /* Symbols of this form are reasonably rare, so we just |
18522 | piggyback on the existing location code rather than writing | |
18523 | a new implementation of symbol_computed_ops. */ | |
7919a973 | 18524 | *baton = obstack_alloc (obstack, sizeof (struct dwarf2_locexpr_baton)); |
98bfdba5 PA |
18525 | (*baton)->per_cu = cu->per_cu; |
18526 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 18527 | |
98bfdba5 | 18528 | (*baton)->size = 2 + cu_header->addr_size; |
7919a973 | 18529 | data = obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 18530 | (*baton)->data = data; |
ac56253d TT |
18531 | |
18532 | data[0] = DW_OP_addr; | |
18533 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
18534 | byte_order, DW_ADDR (attr)); | |
18535 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 18536 | } |
c906108c | 18537 | break; |
4ac36638 | 18538 | case DW_FORM_string: |
93b5768b | 18539 | case DW_FORM_strp: |
3019eac3 | 18540 | case DW_FORM_GNU_str_index: |
36586728 | 18541 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
18542 | /* DW_STRING is already allocated on the objfile obstack, point |
18543 | directly to it. */ | |
d521ce57 | 18544 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 18545 | break; |
c906108c SS |
18546 | case DW_FORM_block1: |
18547 | case DW_FORM_block2: | |
18548 | case DW_FORM_block4: | |
18549 | case DW_FORM_block: | |
2dc7f7b3 | 18550 | case DW_FORM_exprloc: |
c906108c | 18551 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
18552 | if (TYPE_LENGTH (type) != blk->size) |
18553 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
18554 | TYPE_LENGTH (type)); | |
18555 | *bytes = blk->data; | |
c906108c | 18556 | break; |
2df3850c JM |
18557 | |
18558 | /* The DW_AT_const_value attributes are supposed to carry the | |
18559 | symbol's value "represented as it would be on the target | |
18560 | architecture." By the time we get here, it's already been | |
18561 | converted to host endianness, so we just need to sign- or | |
18562 | zero-extend it as appropriate. */ | |
18563 | case DW_FORM_data1: | |
3aef2284 | 18564 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 18565 | break; |
c906108c | 18566 | case DW_FORM_data2: |
3aef2284 | 18567 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 18568 | break; |
c906108c | 18569 | case DW_FORM_data4: |
3aef2284 | 18570 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 18571 | break; |
c906108c | 18572 | case DW_FORM_data8: |
3aef2284 | 18573 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
18574 | break; |
18575 | ||
c906108c | 18576 | case DW_FORM_sdata: |
98bfdba5 | 18577 | *value = DW_SND (attr); |
2df3850c JM |
18578 | break; |
18579 | ||
c906108c | 18580 | case DW_FORM_udata: |
98bfdba5 | 18581 | *value = DW_UNSND (attr); |
c906108c | 18582 | break; |
2df3850c | 18583 | |
c906108c | 18584 | default: |
4d3c2250 | 18585 | complaint (&symfile_complaints, |
e2e0b3e5 | 18586 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 18587 | dwarf_form_name (attr->form)); |
98bfdba5 | 18588 | *value = 0; |
c906108c SS |
18589 | break; |
18590 | } | |
18591 | } | |
18592 | ||
2df3850c | 18593 | |
98bfdba5 PA |
18594 | /* Copy constant value from an attribute to a symbol. */ |
18595 | ||
2df3850c | 18596 | static void |
ff39bb5e | 18597 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 18598 | struct dwarf2_cu *cu) |
2df3850c | 18599 | { |
98bfdba5 PA |
18600 | struct objfile *objfile = cu->objfile; |
18601 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 18602 | LONGEST value; |
d521ce57 | 18603 | const gdb_byte *bytes; |
98bfdba5 | 18604 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 18605 | |
98bfdba5 PA |
18606 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
18607 | SYMBOL_PRINT_NAME (sym), | |
18608 | &objfile->objfile_obstack, cu, | |
18609 | &value, &bytes, &baton); | |
2df3850c | 18610 | |
98bfdba5 PA |
18611 | if (baton != NULL) |
18612 | { | |
98bfdba5 | 18613 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 18614 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
18615 | } |
18616 | else if (bytes != NULL) | |
18617 | { | |
18618 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 18619 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
18620 | } |
18621 | else | |
18622 | { | |
18623 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 18624 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 18625 | } |
2df3850c JM |
18626 | } |
18627 | ||
c906108c SS |
18628 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
18629 | ||
18630 | static struct type * | |
e7c27a73 | 18631 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18632 | { |
c906108c | 18633 | struct attribute *type_attr; |
c906108c | 18634 | |
e142c38c | 18635 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
18636 | if (!type_attr) |
18637 | { | |
18638 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 18639 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 18640 | } |
348e048f | 18641 | |
673bfd45 | 18642 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
18643 | } |
18644 | ||
b4ba55a1 JB |
18645 | /* True iff CU's producer generates GNAT Ada auxiliary information |
18646 | that allows to find parallel types through that information instead | |
18647 | of having to do expensive parallel lookups by type name. */ | |
18648 | ||
18649 | static int | |
18650 | need_gnat_info (struct dwarf2_cu *cu) | |
18651 | { | |
18652 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
18653 | of GNAT produces this auxiliary information, without any indication | |
18654 | that it is produced. Part of enhancing the FSF version of GNAT | |
18655 | to produce that information will be to put in place an indicator | |
18656 | that we can use in order to determine whether the descriptive type | |
18657 | info is available or not. One suggestion that has been made is | |
18658 | to use a new attribute, attached to the CU die. For now, assume | |
18659 | that the descriptive type info is not available. */ | |
18660 | return 0; | |
18661 | } | |
18662 | ||
b4ba55a1 JB |
18663 | /* Return the auxiliary type of the die in question using its |
18664 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
18665 | attribute is not present. */ | |
18666 | ||
18667 | static struct type * | |
18668 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
18669 | { | |
b4ba55a1 | 18670 | struct attribute *type_attr; |
b4ba55a1 JB |
18671 | |
18672 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
18673 | if (!type_attr) | |
18674 | return NULL; | |
18675 | ||
673bfd45 | 18676 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
18677 | } |
18678 | ||
18679 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
18680 | descriptive type accordingly. */ | |
18681 | ||
18682 | static void | |
18683 | set_descriptive_type (struct type *type, struct die_info *die, | |
18684 | struct dwarf2_cu *cu) | |
18685 | { | |
18686 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
18687 | ||
18688 | if (descriptive_type) | |
18689 | { | |
18690 | ALLOCATE_GNAT_AUX_TYPE (type); | |
18691 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
18692 | } | |
18693 | } | |
18694 | ||
c906108c SS |
18695 | /* Return the containing type of the die in question using its |
18696 | DW_AT_containing_type attribute. */ | |
18697 | ||
18698 | static struct type * | |
e7c27a73 | 18699 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18700 | { |
c906108c | 18701 | struct attribute *type_attr; |
c906108c | 18702 | |
e142c38c | 18703 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
18704 | if (!type_attr) |
18705 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 18706 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 18707 | |
673bfd45 | 18708 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
18709 | } |
18710 | ||
ac9ec31b DE |
18711 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
18712 | ||
18713 | static struct type * | |
18714 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
18715 | { | |
18716 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18717 | char *message, *saved; | |
18718 | ||
18719 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 18720 | objfile_name (objfile), |
ac9ec31b DE |
18721 | cu->header.offset.sect_off, |
18722 | die->offset.sect_off); | |
18723 | saved = obstack_copy0 (&objfile->objfile_obstack, | |
18724 | message, strlen (message)); | |
18725 | xfree (message); | |
18726 | ||
18727 | return init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); | |
18728 | } | |
18729 | ||
673bfd45 | 18730 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
18731 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
18732 | DW_AT_containing_type. | |
673bfd45 DE |
18733 | If there is no type substitute an error marker. */ |
18734 | ||
c906108c | 18735 | static struct type * |
ff39bb5e | 18736 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 18737 | struct dwarf2_cu *cu) |
c906108c | 18738 | { |
bb5ed363 | 18739 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
18740 | struct type *this_type; |
18741 | ||
ac9ec31b DE |
18742 | gdb_assert (attr->name == DW_AT_type |
18743 | || attr->name == DW_AT_GNAT_descriptive_type | |
18744 | || attr->name == DW_AT_containing_type); | |
18745 | ||
673bfd45 DE |
18746 | /* First see if we have it cached. */ |
18747 | ||
36586728 TT |
18748 | if (attr->form == DW_FORM_GNU_ref_alt) |
18749 | { | |
18750 | struct dwarf2_per_cu_data *per_cu; | |
18751 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
18752 | ||
18753 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
18754 | this_type = get_die_type_at_offset (offset, per_cu); | |
18755 | } | |
7771576e | 18756 | else if (attr_form_is_ref (attr)) |
673bfd45 | 18757 | { |
b64f50a1 | 18758 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
18759 | |
18760 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
18761 | } | |
55f1336d | 18762 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 18763 | { |
ac9ec31b | 18764 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 18765 | |
ac9ec31b | 18766 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
18767 | } |
18768 | else | |
18769 | { | |
ac9ec31b DE |
18770 | complaint (&symfile_complaints, |
18771 | _("Dwarf Error: Bad type attribute %s in DIE" | |
18772 | " at 0x%x [in module %s]"), | |
18773 | dwarf_attr_name (attr->name), die->offset.sect_off, | |
4262abfb | 18774 | objfile_name (objfile)); |
ac9ec31b | 18775 | return build_error_marker_type (cu, die); |
673bfd45 DE |
18776 | } |
18777 | ||
18778 | /* If not cached we need to read it in. */ | |
18779 | ||
18780 | if (this_type == NULL) | |
18781 | { | |
ac9ec31b | 18782 | struct die_info *type_die = NULL; |
673bfd45 DE |
18783 | struct dwarf2_cu *type_cu = cu; |
18784 | ||
7771576e | 18785 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
18786 | type_die = follow_die_ref (die, attr, &type_cu); |
18787 | if (type_die == NULL) | |
18788 | return build_error_marker_type (cu, die); | |
18789 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
18790 | from an inter-CU reference and the type's CU got expanded before |
18791 | ours. */ | |
ac9ec31b | 18792 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
18793 | } |
18794 | ||
18795 | /* If we still don't have a type use an error marker. */ | |
18796 | ||
18797 | if (this_type == NULL) | |
ac9ec31b | 18798 | return build_error_marker_type (cu, die); |
673bfd45 | 18799 | |
f792889a | 18800 | return this_type; |
c906108c SS |
18801 | } |
18802 | ||
673bfd45 DE |
18803 | /* Return the type in DIE, CU. |
18804 | Returns NULL for invalid types. | |
18805 | ||
02142a6c | 18806 | This first does a lookup in die_type_hash, |
673bfd45 DE |
18807 | and only reads the die in if necessary. |
18808 | ||
18809 | NOTE: This can be called when reading in partial or full symbols. */ | |
18810 | ||
f792889a | 18811 | static struct type * |
e7c27a73 | 18812 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18813 | { |
f792889a DJ |
18814 | struct type *this_type; |
18815 | ||
18816 | this_type = get_die_type (die, cu); | |
18817 | if (this_type) | |
18818 | return this_type; | |
18819 | ||
673bfd45 DE |
18820 | return read_type_die_1 (die, cu); |
18821 | } | |
18822 | ||
18823 | /* Read the type in DIE, CU. | |
18824 | Returns NULL for invalid types. */ | |
18825 | ||
18826 | static struct type * | |
18827 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
18828 | { | |
18829 | struct type *this_type = NULL; | |
18830 | ||
c906108c SS |
18831 | switch (die->tag) |
18832 | { | |
18833 | case DW_TAG_class_type: | |
680b30c7 | 18834 | case DW_TAG_interface_type: |
c906108c SS |
18835 | case DW_TAG_structure_type: |
18836 | case DW_TAG_union_type: | |
f792889a | 18837 | this_type = read_structure_type (die, cu); |
c906108c SS |
18838 | break; |
18839 | case DW_TAG_enumeration_type: | |
f792889a | 18840 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
18841 | break; |
18842 | case DW_TAG_subprogram: | |
18843 | case DW_TAG_subroutine_type: | |
edb3359d | 18844 | case DW_TAG_inlined_subroutine: |
f792889a | 18845 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
18846 | break; |
18847 | case DW_TAG_array_type: | |
f792889a | 18848 | this_type = read_array_type (die, cu); |
c906108c | 18849 | break; |
72019c9c | 18850 | case DW_TAG_set_type: |
f792889a | 18851 | this_type = read_set_type (die, cu); |
72019c9c | 18852 | break; |
c906108c | 18853 | case DW_TAG_pointer_type: |
f792889a | 18854 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
18855 | break; |
18856 | case DW_TAG_ptr_to_member_type: | |
f792889a | 18857 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
18858 | break; |
18859 | case DW_TAG_reference_type: | |
f792889a | 18860 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
18861 | break; |
18862 | case DW_TAG_const_type: | |
f792889a | 18863 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
18864 | break; |
18865 | case DW_TAG_volatile_type: | |
f792889a | 18866 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 18867 | break; |
06d66ee9 TT |
18868 | case DW_TAG_restrict_type: |
18869 | this_type = read_tag_restrict_type (die, cu); | |
18870 | break; | |
c906108c | 18871 | case DW_TAG_string_type: |
f792889a | 18872 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
18873 | break; |
18874 | case DW_TAG_typedef: | |
f792889a | 18875 | this_type = read_typedef (die, cu); |
c906108c | 18876 | break; |
a02abb62 | 18877 | case DW_TAG_subrange_type: |
f792889a | 18878 | this_type = read_subrange_type (die, cu); |
a02abb62 | 18879 | break; |
c906108c | 18880 | case DW_TAG_base_type: |
f792889a | 18881 | this_type = read_base_type (die, cu); |
c906108c | 18882 | break; |
81a17f79 | 18883 | case DW_TAG_unspecified_type: |
f792889a | 18884 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 18885 | break; |
0114d602 DJ |
18886 | case DW_TAG_namespace: |
18887 | this_type = read_namespace_type (die, cu); | |
18888 | break; | |
f55ee35c JK |
18889 | case DW_TAG_module: |
18890 | this_type = read_module_type (die, cu); | |
18891 | break; | |
a2c2acaf MW |
18892 | case DW_TAG_atomic_type: |
18893 | this_type = read_tag_atomic_type (die, cu); | |
18894 | break; | |
c906108c | 18895 | default: |
3e43a32a MS |
18896 | complaint (&symfile_complaints, |
18897 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 18898 | dwarf_tag_name (die->tag)); |
c906108c SS |
18899 | break; |
18900 | } | |
63d06c5c | 18901 | |
f792889a | 18902 | return this_type; |
63d06c5c DC |
18903 | } |
18904 | ||
abc72ce4 DE |
18905 | /* See if we can figure out if the class lives in a namespace. We do |
18906 | this by looking for a member function; its demangled name will | |
18907 | contain namespace info, if there is any. | |
18908 | Return the computed name or NULL. | |
18909 | Space for the result is allocated on the objfile's obstack. | |
18910 | This is the full-die version of guess_partial_die_structure_name. | |
18911 | In this case we know DIE has no useful parent. */ | |
18912 | ||
18913 | static char * | |
18914 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
18915 | { | |
18916 | struct die_info *spec_die; | |
18917 | struct dwarf2_cu *spec_cu; | |
18918 | struct die_info *child; | |
18919 | ||
18920 | spec_cu = cu; | |
18921 | spec_die = die_specification (die, &spec_cu); | |
18922 | if (spec_die != NULL) | |
18923 | { | |
18924 | die = spec_die; | |
18925 | cu = spec_cu; | |
18926 | } | |
18927 | ||
18928 | for (child = die->child; | |
18929 | child != NULL; | |
18930 | child = child->sibling) | |
18931 | { | |
18932 | if (child->tag == DW_TAG_subprogram) | |
18933 | { | |
18934 | struct attribute *attr; | |
18935 | ||
18936 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
18937 | if (attr == NULL) | |
18938 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
18939 | if (attr != NULL) | |
18940 | { | |
18941 | char *actual_name | |
18942 | = language_class_name_from_physname (cu->language_defn, | |
18943 | DW_STRING (attr)); | |
18944 | char *name = NULL; | |
18945 | ||
18946 | if (actual_name != NULL) | |
18947 | { | |
15d034d0 | 18948 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
18949 | |
18950 | if (die_name != NULL | |
18951 | && strcmp (die_name, actual_name) != 0) | |
18952 | { | |
18953 | /* Strip off the class name from the full name. | |
18954 | We want the prefix. */ | |
18955 | int die_name_len = strlen (die_name); | |
18956 | int actual_name_len = strlen (actual_name); | |
18957 | ||
18958 | /* Test for '::' as a sanity check. */ | |
18959 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
18960 | && actual_name[actual_name_len |
18961 | - die_name_len - 1] == ':') | |
abc72ce4 | 18962 | name = |
34a68019 | 18963 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb TT |
18964 | actual_name, |
18965 | actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
18966 | } |
18967 | } | |
18968 | xfree (actual_name); | |
18969 | return name; | |
18970 | } | |
18971 | } | |
18972 | } | |
18973 | ||
18974 | return NULL; | |
18975 | } | |
18976 | ||
96408a79 SA |
18977 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
18978 | prefix part in such case. See | |
18979 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
18980 | ||
18981 | static char * | |
18982 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
18983 | { | |
18984 | struct attribute *attr; | |
18985 | char *base; | |
18986 | ||
18987 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
18988 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
18989 | return NULL; | |
18990 | ||
18991 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
18992 | if (attr != NULL && DW_STRING (attr) != NULL) | |
18993 | return NULL; | |
18994 | ||
18995 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
18996 | if (attr == NULL) | |
18997 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
18998 | if (attr == NULL || DW_STRING (attr) == NULL) | |
18999 | return NULL; | |
19000 | ||
19001 | /* dwarf2_name had to be already called. */ | |
19002 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
19003 | ||
19004 | /* Strip the base name, keep any leading namespaces/classes. */ | |
19005 | base = strrchr (DW_STRING (attr), ':'); | |
19006 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
19007 | return ""; | |
19008 | ||
34a68019 | 19009 | return obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
10f0c4bb | 19010 | DW_STRING (attr), &base[-1] - DW_STRING (attr)); |
96408a79 SA |
19011 | } |
19012 | ||
fdde2d81 | 19013 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 19014 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 19015 | |
0114d602 DJ |
19016 | For example, if we're within the method foo() in the following |
19017 | code: | |
19018 | ||
19019 | namespace N { | |
19020 | class C { | |
19021 | void foo () { | |
19022 | } | |
19023 | }; | |
19024 | } | |
19025 | ||
19026 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 19027 | |
0d5cff50 | 19028 | static const char * |
e142c38c | 19029 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 19030 | { |
0114d602 DJ |
19031 | struct die_info *parent, *spec_die; |
19032 | struct dwarf2_cu *spec_cu; | |
19033 | struct type *parent_type; | |
96408a79 | 19034 | char *retval; |
63d06c5c | 19035 | |
f55ee35c JK |
19036 | if (cu->language != language_cplus && cu->language != language_java |
19037 | && cu->language != language_fortran) | |
0114d602 DJ |
19038 | return ""; |
19039 | ||
96408a79 SA |
19040 | retval = anonymous_struct_prefix (die, cu); |
19041 | if (retval) | |
19042 | return retval; | |
19043 | ||
0114d602 DJ |
19044 | /* We have to be careful in the presence of DW_AT_specification. |
19045 | For example, with GCC 3.4, given the code | |
19046 | ||
19047 | namespace N { | |
19048 | void foo() { | |
19049 | // Definition of N::foo. | |
19050 | } | |
19051 | } | |
19052 | ||
19053 | then we'll have a tree of DIEs like this: | |
19054 | ||
19055 | 1: DW_TAG_compile_unit | |
19056 | 2: DW_TAG_namespace // N | |
19057 | 3: DW_TAG_subprogram // declaration of N::foo | |
19058 | 4: DW_TAG_subprogram // definition of N::foo | |
19059 | DW_AT_specification // refers to die #3 | |
19060 | ||
19061 | Thus, when processing die #4, we have to pretend that we're in | |
19062 | the context of its DW_AT_specification, namely the contex of die | |
19063 | #3. */ | |
19064 | spec_cu = cu; | |
19065 | spec_die = die_specification (die, &spec_cu); | |
19066 | if (spec_die == NULL) | |
19067 | parent = die->parent; | |
19068 | else | |
63d06c5c | 19069 | { |
0114d602 DJ |
19070 | parent = spec_die->parent; |
19071 | cu = spec_cu; | |
63d06c5c | 19072 | } |
0114d602 DJ |
19073 | |
19074 | if (parent == NULL) | |
19075 | return ""; | |
98bfdba5 PA |
19076 | else if (parent->building_fullname) |
19077 | { | |
19078 | const char *name; | |
19079 | const char *parent_name; | |
19080 | ||
19081 | /* It has been seen on RealView 2.2 built binaries, | |
19082 | DW_TAG_template_type_param types actually _defined_ as | |
19083 | children of the parent class: | |
19084 | ||
19085 | enum E {}; | |
19086 | template class <class Enum> Class{}; | |
19087 | Class<enum E> class_e; | |
19088 | ||
19089 | 1: DW_TAG_class_type (Class) | |
19090 | 2: DW_TAG_enumeration_type (E) | |
19091 | 3: DW_TAG_enumerator (enum1:0) | |
19092 | 3: DW_TAG_enumerator (enum2:1) | |
19093 | ... | |
19094 | 2: DW_TAG_template_type_param | |
19095 | DW_AT_type DW_FORM_ref_udata (E) | |
19096 | ||
19097 | Besides being broken debug info, it can put GDB into an | |
19098 | infinite loop. Consider: | |
19099 | ||
19100 | When we're building the full name for Class<E>, we'll start | |
19101 | at Class, and go look over its template type parameters, | |
19102 | finding E. We'll then try to build the full name of E, and | |
19103 | reach here. We're now trying to build the full name of E, | |
19104 | and look over the parent DIE for containing scope. In the | |
19105 | broken case, if we followed the parent DIE of E, we'd again | |
19106 | find Class, and once again go look at its template type | |
19107 | arguments, etc., etc. Simply don't consider such parent die | |
19108 | as source-level parent of this die (it can't be, the language | |
19109 | doesn't allow it), and break the loop here. */ | |
19110 | name = dwarf2_name (die, cu); | |
19111 | parent_name = dwarf2_name (parent, cu); | |
19112 | complaint (&symfile_complaints, | |
19113 | _("template param type '%s' defined within parent '%s'"), | |
19114 | name ? name : "<unknown>", | |
19115 | parent_name ? parent_name : "<unknown>"); | |
19116 | return ""; | |
19117 | } | |
63d06c5c | 19118 | else |
0114d602 DJ |
19119 | switch (parent->tag) |
19120 | { | |
63d06c5c | 19121 | case DW_TAG_namespace: |
0114d602 | 19122 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
19123 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
19124 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
19125 | Work around this problem here. */ | |
19126 | if (cu->language == language_cplus | |
19127 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
19128 | return ""; | |
0114d602 DJ |
19129 | /* We give a name to even anonymous namespaces. */ |
19130 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 19131 | case DW_TAG_class_type: |
680b30c7 | 19132 | case DW_TAG_interface_type: |
63d06c5c | 19133 | case DW_TAG_structure_type: |
0114d602 | 19134 | case DW_TAG_union_type: |
f55ee35c | 19135 | case DW_TAG_module: |
0114d602 DJ |
19136 | parent_type = read_type_die (parent, cu); |
19137 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19138 | return TYPE_TAG_NAME (parent_type); | |
19139 | else | |
19140 | /* An anonymous structure is only allowed non-static data | |
19141 | members; no typedefs, no member functions, et cetera. | |
19142 | So it does not need a prefix. */ | |
19143 | return ""; | |
abc72ce4 | 19144 | case DW_TAG_compile_unit: |
95554aad | 19145 | case DW_TAG_partial_unit: |
abc72ce4 DE |
19146 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
19147 | if (cu->language == language_cplus | |
8b70b953 | 19148 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
19149 | && die->child != NULL |
19150 | && (die->tag == DW_TAG_class_type | |
19151 | || die->tag == DW_TAG_structure_type | |
19152 | || die->tag == DW_TAG_union_type)) | |
19153 | { | |
19154 | char *name = guess_full_die_structure_name (die, cu); | |
19155 | if (name != NULL) | |
19156 | return name; | |
19157 | } | |
19158 | return ""; | |
3d567982 TT |
19159 | case DW_TAG_enumeration_type: |
19160 | parent_type = read_type_die (parent, cu); | |
19161 | if (TYPE_DECLARED_CLASS (parent_type)) | |
19162 | { | |
19163 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19164 | return TYPE_TAG_NAME (parent_type); | |
19165 | return ""; | |
19166 | } | |
19167 | /* Fall through. */ | |
63d06c5c | 19168 | default: |
8176b9b8 | 19169 | return determine_prefix (parent, cu); |
63d06c5c | 19170 | } |
63d06c5c DC |
19171 | } |
19172 | ||
3e43a32a MS |
19173 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
19174 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
19175 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
19176 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
19177 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 19178 | |
f55ee35c | 19179 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
19180 | |
19181 | static char * | |
f55ee35c JK |
19182 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
19183 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 19184 | { |
f55ee35c | 19185 | const char *lead = ""; |
5c315b68 | 19186 | const char *sep; |
63d06c5c | 19187 | |
3e43a32a MS |
19188 | if (suffix == NULL || suffix[0] == '\0' |
19189 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
19190 | sep = ""; |
19191 | else if (cu->language == language_java) | |
19192 | sep = "."; | |
f55ee35c JK |
19193 | else if (cu->language == language_fortran && physname) |
19194 | { | |
19195 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
19196 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
19197 | ||
19198 | lead = "__"; | |
19199 | sep = "_MOD_"; | |
19200 | } | |
987504bb JJ |
19201 | else |
19202 | sep = "::"; | |
63d06c5c | 19203 | |
6dd47d34 DE |
19204 | if (prefix == NULL) |
19205 | prefix = ""; | |
19206 | if (suffix == NULL) | |
19207 | suffix = ""; | |
19208 | ||
987504bb JJ |
19209 | if (obs == NULL) |
19210 | { | |
3e43a32a MS |
19211 | char *retval |
19212 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 19213 | |
f55ee35c JK |
19214 | strcpy (retval, lead); |
19215 | strcat (retval, prefix); | |
6dd47d34 DE |
19216 | strcat (retval, sep); |
19217 | strcat (retval, suffix); | |
63d06c5c DC |
19218 | return retval; |
19219 | } | |
987504bb JJ |
19220 | else |
19221 | { | |
19222 | /* We have an obstack. */ | |
f55ee35c | 19223 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 19224 | } |
63d06c5c DC |
19225 | } |
19226 | ||
c906108c SS |
19227 | /* Return sibling of die, NULL if no sibling. */ |
19228 | ||
f9aca02d | 19229 | static struct die_info * |
fba45db2 | 19230 | sibling_die (struct die_info *die) |
c906108c | 19231 | { |
639d11d3 | 19232 | return die->sibling; |
c906108c SS |
19233 | } |
19234 | ||
71c25dea TT |
19235 | /* Get name of a die, return NULL if not found. */ |
19236 | ||
15d034d0 TT |
19237 | static const char * |
19238 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
19239 | struct obstack *obstack) |
19240 | { | |
19241 | if (name && cu->language == language_cplus) | |
19242 | { | |
19243 | char *canon_name = cp_canonicalize_string (name); | |
19244 | ||
19245 | if (canon_name != NULL) | |
19246 | { | |
19247 | if (strcmp (canon_name, name) != 0) | |
10f0c4bb | 19248 | name = obstack_copy0 (obstack, canon_name, strlen (canon_name)); |
71c25dea TT |
19249 | xfree (canon_name); |
19250 | } | |
19251 | } | |
19252 | ||
19253 | return name; | |
c906108c SS |
19254 | } |
19255 | ||
9219021c DC |
19256 | /* Get name of a die, return NULL if not found. */ |
19257 | ||
15d034d0 | 19258 | static const char * |
e142c38c | 19259 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
19260 | { |
19261 | struct attribute *attr; | |
19262 | ||
e142c38c | 19263 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
19264 | if ((!attr || !DW_STRING (attr)) |
19265 | && die->tag != DW_TAG_class_type | |
19266 | && die->tag != DW_TAG_interface_type | |
19267 | && die->tag != DW_TAG_structure_type | |
19268 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
19269 | return NULL; |
19270 | ||
19271 | switch (die->tag) | |
19272 | { | |
19273 | case DW_TAG_compile_unit: | |
95554aad | 19274 | case DW_TAG_partial_unit: |
71c25dea TT |
19275 | /* Compilation units have a DW_AT_name that is a filename, not |
19276 | a source language identifier. */ | |
19277 | case DW_TAG_enumeration_type: | |
19278 | case DW_TAG_enumerator: | |
19279 | /* These tags always have simple identifiers already; no need | |
19280 | to canonicalize them. */ | |
19281 | return DW_STRING (attr); | |
907af001 | 19282 | |
418835cc KS |
19283 | case DW_TAG_subprogram: |
19284 | /* Java constructors will all be named "<init>", so return | |
19285 | the class name when we see this special case. */ | |
19286 | if (cu->language == language_java | |
19287 | && DW_STRING (attr) != NULL | |
19288 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
19289 | { | |
19290 | struct dwarf2_cu *spec_cu = cu; | |
19291 | struct die_info *spec_die; | |
19292 | ||
19293 | /* GCJ will output '<init>' for Java constructor names. | |
19294 | For this special case, return the name of the parent class. */ | |
19295 | ||
cdc07690 | 19296 | /* GCJ may output subprogram DIEs with AT_specification set. |
418835cc KS |
19297 | If so, use the name of the specified DIE. */ |
19298 | spec_die = die_specification (die, &spec_cu); | |
19299 | if (spec_die != NULL) | |
19300 | return dwarf2_name (spec_die, spec_cu); | |
19301 | ||
19302 | do | |
19303 | { | |
19304 | die = die->parent; | |
19305 | if (die->tag == DW_TAG_class_type) | |
19306 | return dwarf2_name (die, cu); | |
19307 | } | |
95554aad TT |
19308 | while (die->tag != DW_TAG_compile_unit |
19309 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 19310 | } |
907af001 UW |
19311 | break; |
19312 | ||
19313 | case DW_TAG_class_type: | |
19314 | case DW_TAG_interface_type: | |
19315 | case DW_TAG_structure_type: | |
19316 | case DW_TAG_union_type: | |
19317 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
19318 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
19319 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
19320 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
19321 | if (attr && DW_STRING (attr) |
19322 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
19323 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 19324 | return NULL; |
53832f31 TT |
19325 | |
19326 | /* GCC might emit a nameless typedef that has a linkage name. See | |
19327 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
19328 | if (!attr || DW_STRING (attr) == NULL) | |
19329 | { | |
df5c6c50 | 19330 | char *demangled = NULL; |
53832f31 TT |
19331 | |
19332 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
19333 | if (attr == NULL) | |
19334 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
19335 | ||
19336 | if (attr == NULL || DW_STRING (attr) == NULL) | |
19337 | return NULL; | |
19338 | ||
df5c6c50 JK |
19339 | /* Avoid demangling DW_STRING (attr) the second time on a second |
19340 | call for the same DIE. */ | |
19341 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 19342 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
19343 | |
19344 | if (demangled) | |
19345 | { | |
96408a79 SA |
19346 | char *base; |
19347 | ||
53832f31 | 19348 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 TT |
19349 | DW_STRING (attr) |
19350 | = obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
19351 | demangled, strlen (demangled)); | |
53832f31 TT |
19352 | DW_STRING_IS_CANONICAL (attr) = 1; |
19353 | xfree (demangled); | |
96408a79 SA |
19354 | |
19355 | /* Strip any leading namespaces/classes, keep only the base name. | |
19356 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
19357 | base = strrchr (DW_STRING (attr), ':'); | |
19358 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
19359 | return &base[1]; | |
19360 | else | |
19361 | return DW_STRING (attr); | |
53832f31 TT |
19362 | } |
19363 | } | |
907af001 UW |
19364 | break; |
19365 | ||
71c25dea | 19366 | default: |
907af001 UW |
19367 | break; |
19368 | } | |
19369 | ||
19370 | if (!DW_STRING_IS_CANONICAL (attr)) | |
19371 | { | |
19372 | DW_STRING (attr) | |
19373 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
34a68019 | 19374 | &cu->objfile->per_bfd->storage_obstack); |
907af001 | 19375 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 19376 | } |
907af001 | 19377 | return DW_STRING (attr); |
9219021c DC |
19378 | } |
19379 | ||
19380 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
19381 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
19382 | containing the return value on output. */ | |
9219021c DC |
19383 | |
19384 | static struct die_info * | |
f2f0e013 | 19385 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
19386 | { |
19387 | struct attribute *attr; | |
9219021c | 19388 | |
f2f0e013 | 19389 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
19390 | if (attr == NULL) |
19391 | return NULL; | |
19392 | ||
f2f0e013 | 19393 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
19394 | } |
19395 | ||
c906108c SS |
19396 | /* Convert a DIE tag into its string name. */ |
19397 | ||
f39c6ffd | 19398 | static const char * |
aa1ee363 | 19399 | dwarf_tag_name (unsigned tag) |
c906108c | 19400 | { |
f39c6ffd TT |
19401 | const char *name = get_DW_TAG_name (tag); |
19402 | ||
19403 | if (name == NULL) | |
19404 | return "DW_TAG_<unknown>"; | |
19405 | ||
19406 | return name; | |
c906108c SS |
19407 | } |
19408 | ||
19409 | /* Convert a DWARF attribute code into its string name. */ | |
19410 | ||
f39c6ffd | 19411 | static const char * |
aa1ee363 | 19412 | dwarf_attr_name (unsigned attr) |
c906108c | 19413 | { |
f39c6ffd TT |
19414 | const char *name; |
19415 | ||
c764a876 | 19416 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
19417 | if (attr == DW_AT_MIPS_fde) |
19418 | return "DW_AT_MIPS_fde"; | |
19419 | #else | |
19420 | if (attr == DW_AT_HP_block_index) | |
19421 | return "DW_AT_HP_block_index"; | |
c764a876 | 19422 | #endif |
f39c6ffd TT |
19423 | |
19424 | name = get_DW_AT_name (attr); | |
19425 | ||
19426 | if (name == NULL) | |
19427 | return "DW_AT_<unknown>"; | |
19428 | ||
19429 | return name; | |
c906108c SS |
19430 | } |
19431 | ||
19432 | /* Convert a DWARF value form code into its string name. */ | |
19433 | ||
f39c6ffd | 19434 | static const char * |
aa1ee363 | 19435 | dwarf_form_name (unsigned form) |
c906108c | 19436 | { |
f39c6ffd TT |
19437 | const char *name = get_DW_FORM_name (form); |
19438 | ||
19439 | if (name == NULL) | |
19440 | return "DW_FORM_<unknown>"; | |
19441 | ||
19442 | return name; | |
c906108c SS |
19443 | } |
19444 | ||
19445 | static char * | |
fba45db2 | 19446 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
19447 | { |
19448 | if (mybool) | |
19449 | return "TRUE"; | |
19450 | else | |
19451 | return "FALSE"; | |
19452 | } | |
19453 | ||
19454 | /* Convert a DWARF type code into its string name. */ | |
19455 | ||
f39c6ffd | 19456 | static const char * |
aa1ee363 | 19457 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 19458 | { |
f39c6ffd | 19459 | const char *name = get_DW_ATE_name (enc); |
c906108c | 19460 | |
f39c6ffd TT |
19461 | if (name == NULL) |
19462 | return "DW_ATE_<unknown>"; | |
c906108c | 19463 | |
f39c6ffd | 19464 | return name; |
c906108c | 19465 | } |
c906108c | 19466 | |
f9aca02d | 19467 | static void |
d97bc12b | 19468 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
19469 | { |
19470 | unsigned int i; | |
19471 | ||
d97bc12b DE |
19472 | print_spaces (indent, f); |
19473 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 19474 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
19475 | |
19476 | if (die->parent != NULL) | |
19477 | { | |
19478 | print_spaces (indent, f); | |
19479 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 19480 | die->parent->offset.sect_off); |
d97bc12b DE |
19481 | } |
19482 | ||
19483 | print_spaces (indent, f); | |
19484 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 19485 | dwarf_bool_name (die->child != NULL)); |
c906108c | 19486 | |
d97bc12b DE |
19487 | print_spaces (indent, f); |
19488 | fprintf_unfiltered (f, " attributes:\n"); | |
19489 | ||
c906108c SS |
19490 | for (i = 0; i < die->num_attrs; ++i) |
19491 | { | |
d97bc12b DE |
19492 | print_spaces (indent, f); |
19493 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
19494 | dwarf_attr_name (die->attrs[i].name), |
19495 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 19496 | |
c906108c SS |
19497 | switch (die->attrs[i].form) |
19498 | { | |
c906108c | 19499 | case DW_FORM_addr: |
3019eac3 | 19500 | case DW_FORM_GNU_addr_index: |
d97bc12b | 19501 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 19502 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
19503 | break; |
19504 | case DW_FORM_block2: | |
19505 | case DW_FORM_block4: | |
19506 | case DW_FORM_block: | |
19507 | case DW_FORM_block1: | |
56eb65bd SP |
19508 | fprintf_unfiltered (f, "block: size %s", |
19509 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 19510 | break; |
2dc7f7b3 | 19511 | case DW_FORM_exprloc: |
56eb65bd SP |
19512 | fprintf_unfiltered (f, "expression: size %s", |
19513 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 19514 | break; |
4568ecf9 DE |
19515 | case DW_FORM_ref_addr: |
19516 | fprintf_unfiltered (f, "ref address: "); | |
19517 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
19518 | break; | |
36586728 TT |
19519 | case DW_FORM_GNU_ref_alt: |
19520 | fprintf_unfiltered (f, "alt ref address: "); | |
19521 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
19522 | break; | |
10b3939b DJ |
19523 | case DW_FORM_ref1: |
19524 | case DW_FORM_ref2: | |
19525 | case DW_FORM_ref4: | |
4568ecf9 DE |
19526 | case DW_FORM_ref8: |
19527 | case DW_FORM_ref_udata: | |
d97bc12b | 19528 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 19529 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 19530 | break; |
c906108c SS |
19531 | case DW_FORM_data1: |
19532 | case DW_FORM_data2: | |
19533 | case DW_FORM_data4: | |
ce5d95e1 | 19534 | case DW_FORM_data8: |
c906108c SS |
19535 | case DW_FORM_udata: |
19536 | case DW_FORM_sdata: | |
43bbcdc2 PH |
19537 | fprintf_unfiltered (f, "constant: %s", |
19538 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 19539 | break; |
2dc7f7b3 TT |
19540 | case DW_FORM_sec_offset: |
19541 | fprintf_unfiltered (f, "section offset: %s", | |
19542 | pulongest (DW_UNSND (&die->attrs[i]))); | |
19543 | break; | |
55f1336d | 19544 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
19545 | fprintf_unfiltered (f, "signature: %s", |
19546 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 19547 | break; |
c906108c | 19548 | case DW_FORM_string: |
4bdf3d34 | 19549 | case DW_FORM_strp: |
3019eac3 | 19550 | case DW_FORM_GNU_str_index: |
36586728 | 19551 | case DW_FORM_GNU_strp_alt: |
8285870a | 19552 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 19553 | DW_STRING (&die->attrs[i]) |
8285870a JK |
19554 | ? DW_STRING (&die->attrs[i]) : "", |
19555 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
19556 | break; |
19557 | case DW_FORM_flag: | |
19558 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 19559 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 19560 | else |
d97bc12b | 19561 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 19562 | break; |
2dc7f7b3 TT |
19563 | case DW_FORM_flag_present: |
19564 | fprintf_unfiltered (f, "flag: TRUE"); | |
19565 | break; | |
a8329558 | 19566 | case DW_FORM_indirect: |
0963b4bd MS |
19567 | /* The reader will have reduced the indirect form to |
19568 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
19569 | fprintf_unfiltered (f, |
19570 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 19571 | break; |
c906108c | 19572 | default: |
d97bc12b | 19573 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 19574 | die->attrs[i].form); |
d97bc12b | 19575 | break; |
c906108c | 19576 | } |
d97bc12b | 19577 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
19578 | } |
19579 | } | |
19580 | ||
f9aca02d | 19581 | static void |
d97bc12b | 19582 | dump_die_for_error (struct die_info *die) |
c906108c | 19583 | { |
d97bc12b DE |
19584 | dump_die_shallow (gdb_stderr, 0, die); |
19585 | } | |
19586 | ||
19587 | static void | |
19588 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
19589 | { | |
19590 | int indent = level * 4; | |
19591 | ||
19592 | gdb_assert (die != NULL); | |
19593 | ||
19594 | if (level >= max_level) | |
19595 | return; | |
19596 | ||
19597 | dump_die_shallow (f, indent, die); | |
19598 | ||
19599 | if (die->child != NULL) | |
c906108c | 19600 | { |
d97bc12b DE |
19601 | print_spaces (indent, f); |
19602 | fprintf_unfiltered (f, " Children:"); | |
19603 | if (level + 1 < max_level) | |
19604 | { | |
19605 | fprintf_unfiltered (f, "\n"); | |
19606 | dump_die_1 (f, level + 1, max_level, die->child); | |
19607 | } | |
19608 | else | |
19609 | { | |
3e43a32a MS |
19610 | fprintf_unfiltered (f, |
19611 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
19612 | } |
19613 | } | |
19614 | ||
19615 | if (die->sibling != NULL && level > 0) | |
19616 | { | |
19617 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
19618 | } |
19619 | } | |
19620 | ||
d97bc12b DE |
19621 | /* This is called from the pdie macro in gdbinit.in. |
19622 | It's not static so gcc will keep a copy callable from gdb. */ | |
19623 | ||
19624 | void | |
19625 | dump_die (struct die_info *die, int max_level) | |
19626 | { | |
19627 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
19628 | } | |
19629 | ||
f9aca02d | 19630 | static void |
51545339 | 19631 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19632 | { |
51545339 | 19633 | void **slot; |
c906108c | 19634 | |
b64f50a1 JK |
19635 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
19636 | INSERT); | |
51545339 DJ |
19637 | |
19638 | *slot = die; | |
c906108c SS |
19639 | } |
19640 | ||
b64f50a1 JK |
19641 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
19642 | required kind. */ | |
19643 | ||
19644 | static sect_offset | |
ff39bb5e | 19645 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 19646 | { |
4568ecf9 | 19647 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 19648 | |
7771576e | 19649 | if (attr_form_is_ref (attr)) |
b64f50a1 | 19650 | return retval; |
93311388 | 19651 | |
b64f50a1 | 19652 | retval.sect_off = 0; |
93311388 DE |
19653 | complaint (&symfile_complaints, |
19654 | _("unsupported die ref attribute form: '%s'"), | |
19655 | dwarf_form_name (attr->form)); | |
b64f50a1 | 19656 | return retval; |
c906108c SS |
19657 | } |
19658 | ||
43bbcdc2 PH |
19659 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
19660 | * the value held by the attribute is not constant. */ | |
a02abb62 | 19661 | |
43bbcdc2 | 19662 | static LONGEST |
ff39bb5e | 19663 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 JB |
19664 | { |
19665 | if (attr->form == DW_FORM_sdata) | |
19666 | return DW_SND (attr); | |
19667 | else if (attr->form == DW_FORM_udata | |
19668 | || attr->form == DW_FORM_data1 | |
19669 | || attr->form == DW_FORM_data2 | |
19670 | || attr->form == DW_FORM_data4 | |
19671 | || attr->form == DW_FORM_data8) | |
19672 | return DW_UNSND (attr); | |
19673 | else | |
19674 | { | |
3e43a32a MS |
19675 | complaint (&symfile_complaints, |
19676 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
19677 | dwarf_form_name (attr->form)); |
19678 | return default_value; | |
19679 | } | |
19680 | } | |
19681 | ||
348e048f DE |
19682 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
19683 | On entry *REF_CU is the CU of SRC_DIE. | |
19684 | On exit *REF_CU is the CU of the result. */ | |
19685 | ||
19686 | static struct die_info * | |
ff39bb5e | 19687 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
19688 | struct dwarf2_cu **ref_cu) |
19689 | { | |
19690 | struct die_info *die; | |
19691 | ||
7771576e | 19692 | if (attr_form_is_ref (attr)) |
348e048f | 19693 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 19694 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
19695 | die = follow_die_sig (src_die, attr, ref_cu); |
19696 | else | |
19697 | { | |
19698 | dump_die_for_error (src_die); | |
19699 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 19700 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
19701 | } |
19702 | ||
19703 | return die; | |
03dd20cc DJ |
19704 | } |
19705 | ||
5c631832 | 19706 | /* Follow reference OFFSET. |
673bfd45 DE |
19707 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
19708 | On exit *REF_CU is the CU of the result. | |
19709 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 19710 | |
f9aca02d | 19711 | static struct die_info * |
36586728 TT |
19712 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
19713 | struct dwarf2_cu **ref_cu) | |
c906108c | 19714 | { |
10b3939b | 19715 | struct die_info temp_die; |
f2f0e013 | 19716 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 19717 | |
348e048f DE |
19718 | gdb_assert (cu->per_cu != NULL); |
19719 | ||
98bfdba5 PA |
19720 | target_cu = cu; |
19721 | ||
3019eac3 | 19722 | if (cu->per_cu->is_debug_types) |
348e048f DE |
19723 | { |
19724 | /* .debug_types CUs cannot reference anything outside their CU. | |
19725 | If they need to, they have to reference a signatured type via | |
55f1336d | 19726 | DW_FORM_ref_sig8. */ |
348e048f | 19727 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 19728 | return NULL; |
348e048f | 19729 | } |
36586728 TT |
19730 | else if (offset_in_dwz != cu->per_cu->is_dwz |
19731 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
19732 | { |
19733 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 19734 | |
36586728 TT |
19735 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
19736 | cu->objfile); | |
03dd20cc DJ |
19737 | |
19738 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
19739 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
19740 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 19741 | |
10b3939b DJ |
19742 | target_cu = per_cu->cu; |
19743 | } | |
98bfdba5 PA |
19744 | else if (cu->dies == NULL) |
19745 | { | |
19746 | /* We're loading full DIEs during partial symbol reading. */ | |
19747 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 19748 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 19749 | } |
c906108c | 19750 | |
f2f0e013 | 19751 | *ref_cu = target_cu; |
51545339 | 19752 | temp_die.offset = offset; |
b64f50a1 | 19753 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 19754 | } |
10b3939b | 19755 | |
5c631832 JK |
19756 | /* Follow reference attribute ATTR of SRC_DIE. |
19757 | On entry *REF_CU is the CU of SRC_DIE. | |
19758 | On exit *REF_CU is the CU of the result. */ | |
19759 | ||
19760 | static struct die_info * | |
ff39bb5e | 19761 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
19762 | struct dwarf2_cu **ref_cu) |
19763 | { | |
b64f50a1 | 19764 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
19765 | struct dwarf2_cu *cu = *ref_cu; |
19766 | struct die_info *die; | |
19767 | ||
36586728 TT |
19768 | die = follow_die_offset (offset, |
19769 | (attr->form == DW_FORM_GNU_ref_alt | |
19770 | || cu->per_cu->is_dwz), | |
19771 | ref_cu); | |
5c631832 JK |
19772 | if (!die) |
19773 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
19774 | "at 0x%x [in module %s]"), | |
4262abfb JK |
19775 | offset.sect_off, src_die->offset.sect_off, |
19776 | objfile_name (cu->objfile)); | |
348e048f | 19777 | |
5c631832 JK |
19778 | return die; |
19779 | } | |
19780 | ||
d83e736b JK |
19781 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
19782 | Returned value is intended for DW_OP_call*. Returned | |
19783 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
19784 | |
19785 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
19786 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
19787 | struct dwarf2_per_cu_data *per_cu, | |
19788 | CORE_ADDR (*get_frame_pc) (void *baton), | |
19789 | void *baton) | |
5c631832 | 19790 | { |
918dd910 | 19791 | struct dwarf2_cu *cu; |
5c631832 JK |
19792 | struct die_info *die; |
19793 | struct attribute *attr; | |
19794 | struct dwarf2_locexpr_baton retval; | |
19795 | ||
8cf6f0b1 TT |
19796 | dw2_setup (per_cu->objfile); |
19797 | ||
918dd910 JK |
19798 | if (per_cu->cu == NULL) |
19799 | load_cu (per_cu); | |
19800 | cu = per_cu->cu; | |
19801 | ||
36586728 | 19802 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
19803 | if (!die) |
19804 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 19805 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
19806 | |
19807 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
19808 | if (!attr) | |
19809 | { | |
e103e986 JK |
19810 | /* DWARF: "If there is no such attribute, then there is no effect.". |
19811 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 19812 | |
e103e986 | 19813 | retval.data = NULL; |
5c631832 JK |
19814 | retval.size = 0; |
19815 | } | |
8cf6f0b1 TT |
19816 | else if (attr_form_is_section_offset (attr)) |
19817 | { | |
19818 | struct dwarf2_loclist_baton loclist_baton; | |
19819 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
19820 | size_t size; | |
19821 | ||
19822 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
19823 | ||
19824 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
19825 | &size, pc); | |
19826 | retval.size = size; | |
19827 | } | |
5c631832 JK |
19828 | else |
19829 | { | |
19830 | if (!attr_form_is_block (attr)) | |
19831 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
19832 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
4262abfb | 19833 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
19834 | |
19835 | retval.data = DW_BLOCK (attr)->data; | |
19836 | retval.size = DW_BLOCK (attr)->size; | |
19837 | } | |
19838 | retval.per_cu = cu->per_cu; | |
918dd910 | 19839 | |
918dd910 JK |
19840 | age_cached_comp_units (); |
19841 | ||
5c631832 | 19842 | return retval; |
348e048f DE |
19843 | } |
19844 | ||
8b9737bf TT |
19845 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
19846 | offset. */ | |
19847 | ||
19848 | struct dwarf2_locexpr_baton | |
19849 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
19850 | struct dwarf2_per_cu_data *per_cu, | |
19851 | CORE_ADDR (*get_frame_pc) (void *baton), | |
19852 | void *baton) | |
19853 | { | |
19854 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
19855 | ||
19856 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
19857 | } | |
19858 | ||
b6807d98 TT |
19859 | /* Write a constant of a given type as target-ordered bytes into |
19860 | OBSTACK. */ | |
19861 | ||
19862 | static const gdb_byte * | |
19863 | write_constant_as_bytes (struct obstack *obstack, | |
19864 | enum bfd_endian byte_order, | |
19865 | struct type *type, | |
19866 | ULONGEST value, | |
19867 | LONGEST *len) | |
19868 | { | |
19869 | gdb_byte *result; | |
19870 | ||
19871 | *len = TYPE_LENGTH (type); | |
19872 | result = obstack_alloc (obstack, *len); | |
19873 | store_unsigned_integer (result, *len, byte_order, value); | |
19874 | ||
19875 | return result; | |
19876 | } | |
19877 | ||
19878 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
19879 | pointer to the constant bytes and set LEN to the length of the | |
19880 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
19881 | does not have a DW_AT_const_value, return NULL. */ | |
19882 | ||
19883 | const gdb_byte * | |
19884 | dwarf2_fetch_constant_bytes (sect_offset offset, | |
19885 | struct dwarf2_per_cu_data *per_cu, | |
19886 | struct obstack *obstack, | |
19887 | LONGEST *len) | |
19888 | { | |
19889 | struct dwarf2_cu *cu; | |
19890 | struct die_info *die; | |
19891 | struct attribute *attr; | |
19892 | const gdb_byte *result = NULL; | |
19893 | struct type *type; | |
19894 | LONGEST value; | |
19895 | enum bfd_endian byte_order; | |
19896 | ||
19897 | dw2_setup (per_cu->objfile); | |
19898 | ||
19899 | if (per_cu->cu == NULL) | |
19900 | load_cu (per_cu); | |
19901 | cu = per_cu->cu; | |
19902 | ||
19903 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); | |
19904 | if (!die) | |
19905 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 19906 | offset.sect_off, objfile_name (per_cu->objfile)); |
b6807d98 TT |
19907 | |
19908 | ||
19909 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
19910 | if (attr == NULL) | |
19911 | return NULL; | |
19912 | ||
19913 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
19914 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
19915 | ||
19916 | switch (attr->form) | |
19917 | { | |
19918 | case DW_FORM_addr: | |
19919 | case DW_FORM_GNU_addr_index: | |
19920 | { | |
19921 | gdb_byte *tem; | |
19922 | ||
19923 | *len = cu->header.addr_size; | |
19924 | tem = obstack_alloc (obstack, *len); | |
19925 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); | |
19926 | result = tem; | |
19927 | } | |
19928 | break; | |
19929 | case DW_FORM_string: | |
19930 | case DW_FORM_strp: | |
19931 | case DW_FORM_GNU_str_index: | |
19932 | case DW_FORM_GNU_strp_alt: | |
19933 | /* DW_STRING is already allocated on the objfile obstack, point | |
19934 | directly to it. */ | |
19935 | result = (const gdb_byte *) DW_STRING (attr); | |
19936 | *len = strlen (DW_STRING (attr)); | |
19937 | break; | |
19938 | case DW_FORM_block1: | |
19939 | case DW_FORM_block2: | |
19940 | case DW_FORM_block4: | |
19941 | case DW_FORM_block: | |
19942 | case DW_FORM_exprloc: | |
19943 | result = DW_BLOCK (attr)->data; | |
19944 | *len = DW_BLOCK (attr)->size; | |
19945 | break; | |
19946 | ||
19947 | /* The DW_AT_const_value attributes are supposed to carry the | |
19948 | symbol's value "represented as it would be on the target | |
19949 | architecture." By the time we get here, it's already been | |
19950 | converted to host endianness, so we just need to sign- or | |
19951 | zero-extend it as appropriate. */ | |
19952 | case DW_FORM_data1: | |
19953 | type = die_type (die, cu); | |
19954 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
19955 | if (result == NULL) | |
19956 | result = write_constant_as_bytes (obstack, byte_order, | |
19957 | type, value, len); | |
19958 | break; | |
19959 | case DW_FORM_data2: | |
19960 | type = die_type (die, cu); | |
19961 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
19962 | if (result == NULL) | |
19963 | result = write_constant_as_bytes (obstack, byte_order, | |
19964 | type, value, len); | |
19965 | break; | |
19966 | case DW_FORM_data4: | |
19967 | type = die_type (die, cu); | |
19968 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
19969 | if (result == NULL) | |
19970 | result = write_constant_as_bytes (obstack, byte_order, | |
19971 | type, value, len); | |
19972 | break; | |
19973 | case DW_FORM_data8: | |
19974 | type = die_type (die, cu); | |
19975 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
19976 | if (result == NULL) | |
19977 | result = write_constant_as_bytes (obstack, byte_order, | |
19978 | type, value, len); | |
19979 | break; | |
19980 | ||
19981 | case DW_FORM_sdata: | |
19982 | type = die_type (die, cu); | |
19983 | result = write_constant_as_bytes (obstack, byte_order, | |
19984 | type, DW_SND (attr), len); | |
19985 | break; | |
19986 | ||
19987 | case DW_FORM_udata: | |
19988 | type = die_type (die, cu); | |
19989 | result = write_constant_as_bytes (obstack, byte_order, | |
19990 | type, DW_UNSND (attr), len); | |
19991 | break; | |
19992 | ||
19993 | default: | |
19994 | complaint (&symfile_complaints, | |
19995 | _("unsupported const value attribute form: '%s'"), | |
19996 | dwarf_form_name (attr->form)); | |
19997 | break; | |
19998 | } | |
19999 | ||
20000 | return result; | |
20001 | } | |
20002 | ||
8a9b8146 TT |
20003 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
20004 | PER_CU. */ | |
20005 | ||
20006 | struct type * | |
b64f50a1 | 20007 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
20008 | struct dwarf2_per_cu_data *per_cu) |
20009 | { | |
b64f50a1 JK |
20010 | sect_offset die_offset_sect; |
20011 | ||
8a9b8146 | 20012 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
20013 | |
20014 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
20015 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
20016 | } |
20017 | ||
ac9ec31b | 20018 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 20019 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
20020 | On exit *REF_CU is the CU of the result. |
20021 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
20022 | |
20023 | static struct die_info * | |
ac9ec31b DE |
20024 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
20025 | struct dwarf2_cu **ref_cu) | |
348e048f DE |
20026 | { |
20027 | struct objfile *objfile = (*ref_cu)->objfile; | |
20028 | struct die_info temp_die; | |
348e048f DE |
20029 | struct dwarf2_cu *sig_cu; |
20030 | struct die_info *die; | |
20031 | ||
ac9ec31b DE |
20032 | /* While it might be nice to assert sig_type->type == NULL here, |
20033 | we can get here for DW_AT_imported_declaration where we need | |
20034 | the DIE not the type. */ | |
348e048f DE |
20035 | |
20036 | /* If necessary, add it to the queue and load its DIEs. */ | |
20037 | ||
95554aad | 20038 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 20039 | read_signatured_type (sig_type); |
348e048f | 20040 | |
348e048f | 20041 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 20042 | gdb_assert (sig_cu != NULL); |
3019eac3 DE |
20043 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
20044 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
20045 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
20046 | temp_die.offset.sect_off); | |
348e048f DE |
20047 | if (die) |
20048 | { | |
796a7ff8 DE |
20049 | /* For .gdb_index version 7 keep track of included TUs. |
20050 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
20051 | if (dwarf2_per_objfile->index_table != NULL | |
20052 | && dwarf2_per_objfile->index_table->version <= 7) | |
20053 | { | |
20054 | VEC_safe_push (dwarf2_per_cu_ptr, | |
20055 | (*ref_cu)->per_cu->imported_symtabs, | |
20056 | sig_cu->per_cu); | |
20057 | } | |
20058 | ||
348e048f DE |
20059 | *ref_cu = sig_cu; |
20060 | return die; | |
20061 | } | |
20062 | ||
ac9ec31b DE |
20063 | return NULL; |
20064 | } | |
20065 | ||
20066 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
20067 | On entry *REF_CU is the CU of SRC_DIE. | |
20068 | On exit *REF_CU is the CU of the result. | |
20069 | The result is the DIE of the type. | |
20070 | If the referenced type cannot be found an error is thrown. */ | |
20071 | ||
20072 | static struct die_info * | |
ff39bb5e | 20073 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
20074 | struct dwarf2_cu **ref_cu) |
20075 | { | |
20076 | ULONGEST signature = DW_SIGNATURE (attr); | |
20077 | struct signatured_type *sig_type; | |
20078 | struct die_info *die; | |
20079 | ||
20080 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
20081 | ||
a2ce51a0 | 20082 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
20083 | /* sig_type will be NULL if the signatured type is missing from |
20084 | the debug info. */ | |
20085 | if (sig_type == NULL) | |
20086 | { | |
20087 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20088 | " from DIE at 0x%x [in module %s]"), | |
20089 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20090 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20091 | } |
20092 | ||
20093 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
20094 | if (die == NULL) | |
20095 | { | |
20096 | dump_die_for_error (src_die); | |
20097 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20098 | " from DIE at 0x%x [in module %s]"), | |
20099 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20100 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20101 | } |
20102 | ||
20103 | return die; | |
20104 | } | |
20105 | ||
20106 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
20107 | reading in and processing the type unit if necessary. */ | |
20108 | ||
20109 | static struct type * | |
20110 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
20111 | struct dwarf2_cu *cu) | |
20112 | { | |
20113 | struct signatured_type *sig_type; | |
20114 | struct dwarf2_cu *type_cu; | |
20115 | struct die_info *type_die; | |
20116 | struct type *type; | |
20117 | ||
a2ce51a0 | 20118 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
20119 | /* sig_type will be NULL if the signatured type is missing from |
20120 | the debug info. */ | |
20121 | if (sig_type == NULL) | |
20122 | { | |
20123 | complaint (&symfile_complaints, | |
20124 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20125 | " from DIE at 0x%x [in module %s]"), | |
20126 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20127 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20128 | return build_error_marker_type (cu, die); |
20129 | } | |
20130 | ||
20131 | /* If we already know the type we're done. */ | |
20132 | if (sig_type->type != NULL) | |
20133 | return sig_type->type; | |
20134 | ||
20135 | type_cu = cu; | |
20136 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
20137 | if (type_die != NULL) | |
20138 | { | |
20139 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
20140 | is created. This is important, for example, because for c++ classes | |
20141 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
20142 | type = read_type_die (type_die, type_cu); | |
20143 | if (type == NULL) | |
20144 | { | |
20145 | complaint (&symfile_complaints, | |
20146 | _("Dwarf Error: Cannot build signatured type %s" | |
20147 | " referenced from DIE at 0x%x [in module %s]"), | |
20148 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20149 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20150 | type = build_error_marker_type (cu, die); |
20151 | } | |
20152 | } | |
20153 | else | |
20154 | { | |
20155 | complaint (&symfile_complaints, | |
20156 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20157 | " from DIE at 0x%x [in module %s]"), | |
20158 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20159 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20160 | type = build_error_marker_type (cu, die); |
20161 | } | |
20162 | sig_type->type = type; | |
20163 | ||
20164 | return type; | |
20165 | } | |
20166 | ||
20167 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
20168 | reading in and processing the type unit if necessary. */ | |
20169 | ||
20170 | static struct type * | |
ff39bb5e | 20171 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 20172 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
20173 | { |
20174 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 20175 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
20176 | { |
20177 | struct dwarf2_cu *type_cu = cu; | |
20178 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
20179 | ||
20180 | return read_type_die (type_die, type_cu); | |
20181 | } | |
20182 | else if (attr->form == DW_FORM_ref_sig8) | |
20183 | { | |
20184 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
20185 | } | |
20186 | else | |
20187 | { | |
20188 | complaint (&symfile_complaints, | |
20189 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
20190 | " at 0x%x [in module %s]"), | |
20191 | dwarf_form_name (attr->form), die->offset.sect_off, | |
4262abfb | 20192 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20193 | return build_error_marker_type (cu, die); |
20194 | } | |
348e048f DE |
20195 | } |
20196 | ||
e5fe5e75 | 20197 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
20198 | |
20199 | static void | |
e5fe5e75 | 20200 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 20201 | { |
52dc124a | 20202 | struct signatured_type *sig_type; |
348e048f | 20203 | |
f4dc4d17 DE |
20204 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
20205 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
20206 | ||
6721b2ec DE |
20207 | /* We have the per_cu, but we need the signatured_type. |
20208 | Fortunately this is an easy translation. */ | |
20209 | gdb_assert (per_cu->is_debug_types); | |
20210 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 20211 | |
6721b2ec | 20212 | gdb_assert (per_cu->cu == NULL); |
348e048f | 20213 | |
52dc124a | 20214 | read_signatured_type (sig_type); |
348e048f | 20215 | |
6721b2ec | 20216 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
20217 | } |
20218 | ||
dee91e82 DE |
20219 | /* die_reader_func for read_signatured_type. |
20220 | This is identical to load_full_comp_unit_reader, | |
20221 | but is kept separate for now. */ | |
348e048f DE |
20222 | |
20223 | static void | |
dee91e82 | 20224 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 20225 | const gdb_byte *info_ptr, |
dee91e82 DE |
20226 | struct die_info *comp_unit_die, |
20227 | int has_children, | |
20228 | void *data) | |
348e048f | 20229 | { |
dee91e82 | 20230 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 20231 | |
dee91e82 DE |
20232 | gdb_assert (cu->die_hash == NULL); |
20233 | cu->die_hash = | |
20234 | htab_create_alloc_ex (cu->header.length / 12, | |
20235 | die_hash, | |
20236 | die_eq, | |
20237 | NULL, | |
20238 | &cu->comp_unit_obstack, | |
20239 | hashtab_obstack_allocate, | |
20240 | dummy_obstack_deallocate); | |
348e048f | 20241 | |
dee91e82 DE |
20242 | if (has_children) |
20243 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
20244 | &info_ptr, comp_unit_die); | |
20245 | cu->dies = comp_unit_die; | |
20246 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
20247 | |
20248 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 20249 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 20250 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
20251 | or we won't be able to build types correctly. |
20252 | Similarly, if we do not read the producer, we can not apply | |
20253 | producer-specific interpretation. */ | |
95554aad | 20254 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 20255 | } |
348e048f | 20256 | |
3019eac3 DE |
20257 | /* Read in a signatured type and build its CU and DIEs. |
20258 | If the type is a stub for the real type in a DWO file, | |
20259 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
20260 | |
20261 | static void | |
20262 | read_signatured_type (struct signatured_type *sig_type) | |
20263 | { | |
20264 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 20265 | |
3019eac3 | 20266 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 20267 | gdb_assert (per_cu->cu == NULL); |
348e048f | 20268 | |
f4dc4d17 DE |
20269 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
20270 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 20271 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
20272 | } |
20273 | ||
c906108c SS |
20274 | /* Decode simple location descriptions. |
20275 | Given a pointer to a dwarf block that defines a location, compute | |
20276 | the location and return the value. | |
20277 | ||
4cecd739 DJ |
20278 | NOTE drow/2003-11-18: This function is called in two situations |
20279 | now: for the address of static or global variables (partial symbols | |
20280 | only) and for offsets into structures which are expected to be | |
20281 | (more or less) constant. The partial symbol case should go away, | |
20282 | and only the constant case should remain. That will let this | |
20283 | function complain more accurately. A few special modes are allowed | |
20284 | without complaint for global variables (for instance, global | |
20285 | register values and thread-local values). | |
c906108c SS |
20286 | |
20287 | A location description containing no operations indicates that the | |
4cecd739 | 20288 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
20289 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
20290 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
20291 | complaint. |
20292 | ||
20293 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
20294 | |
20295 | static CORE_ADDR | |
e7c27a73 | 20296 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 20297 | { |
e7c27a73 | 20298 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
20299 | size_t i; |
20300 | size_t size = blk->size; | |
d521ce57 | 20301 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
20302 | CORE_ADDR stack[64]; |
20303 | int stacki; | |
20304 | unsigned int bytes_read, unsnd; | |
20305 | gdb_byte op; | |
c906108c | 20306 | |
21ae7a4d JK |
20307 | i = 0; |
20308 | stacki = 0; | |
20309 | stack[stacki] = 0; | |
20310 | stack[++stacki] = 0; | |
20311 | ||
20312 | while (i < size) | |
20313 | { | |
20314 | op = data[i++]; | |
20315 | switch (op) | |
20316 | { | |
20317 | case DW_OP_lit0: | |
20318 | case DW_OP_lit1: | |
20319 | case DW_OP_lit2: | |
20320 | case DW_OP_lit3: | |
20321 | case DW_OP_lit4: | |
20322 | case DW_OP_lit5: | |
20323 | case DW_OP_lit6: | |
20324 | case DW_OP_lit7: | |
20325 | case DW_OP_lit8: | |
20326 | case DW_OP_lit9: | |
20327 | case DW_OP_lit10: | |
20328 | case DW_OP_lit11: | |
20329 | case DW_OP_lit12: | |
20330 | case DW_OP_lit13: | |
20331 | case DW_OP_lit14: | |
20332 | case DW_OP_lit15: | |
20333 | case DW_OP_lit16: | |
20334 | case DW_OP_lit17: | |
20335 | case DW_OP_lit18: | |
20336 | case DW_OP_lit19: | |
20337 | case DW_OP_lit20: | |
20338 | case DW_OP_lit21: | |
20339 | case DW_OP_lit22: | |
20340 | case DW_OP_lit23: | |
20341 | case DW_OP_lit24: | |
20342 | case DW_OP_lit25: | |
20343 | case DW_OP_lit26: | |
20344 | case DW_OP_lit27: | |
20345 | case DW_OP_lit28: | |
20346 | case DW_OP_lit29: | |
20347 | case DW_OP_lit30: | |
20348 | case DW_OP_lit31: | |
20349 | stack[++stacki] = op - DW_OP_lit0; | |
20350 | break; | |
f1bea926 | 20351 | |
21ae7a4d JK |
20352 | case DW_OP_reg0: |
20353 | case DW_OP_reg1: | |
20354 | case DW_OP_reg2: | |
20355 | case DW_OP_reg3: | |
20356 | case DW_OP_reg4: | |
20357 | case DW_OP_reg5: | |
20358 | case DW_OP_reg6: | |
20359 | case DW_OP_reg7: | |
20360 | case DW_OP_reg8: | |
20361 | case DW_OP_reg9: | |
20362 | case DW_OP_reg10: | |
20363 | case DW_OP_reg11: | |
20364 | case DW_OP_reg12: | |
20365 | case DW_OP_reg13: | |
20366 | case DW_OP_reg14: | |
20367 | case DW_OP_reg15: | |
20368 | case DW_OP_reg16: | |
20369 | case DW_OP_reg17: | |
20370 | case DW_OP_reg18: | |
20371 | case DW_OP_reg19: | |
20372 | case DW_OP_reg20: | |
20373 | case DW_OP_reg21: | |
20374 | case DW_OP_reg22: | |
20375 | case DW_OP_reg23: | |
20376 | case DW_OP_reg24: | |
20377 | case DW_OP_reg25: | |
20378 | case DW_OP_reg26: | |
20379 | case DW_OP_reg27: | |
20380 | case DW_OP_reg28: | |
20381 | case DW_OP_reg29: | |
20382 | case DW_OP_reg30: | |
20383 | case DW_OP_reg31: | |
20384 | stack[++stacki] = op - DW_OP_reg0; | |
20385 | if (i < size) | |
20386 | dwarf2_complex_location_expr_complaint (); | |
20387 | break; | |
c906108c | 20388 | |
21ae7a4d JK |
20389 | case DW_OP_regx: |
20390 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
20391 | i += bytes_read; | |
20392 | stack[++stacki] = unsnd; | |
20393 | if (i < size) | |
20394 | dwarf2_complex_location_expr_complaint (); | |
20395 | break; | |
c906108c | 20396 | |
21ae7a4d JK |
20397 | case DW_OP_addr: |
20398 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
20399 | cu, &bytes_read); | |
20400 | i += bytes_read; | |
20401 | break; | |
d53d4ac5 | 20402 | |
21ae7a4d JK |
20403 | case DW_OP_const1u: |
20404 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
20405 | i += 1; | |
20406 | break; | |
20407 | ||
20408 | case DW_OP_const1s: | |
20409 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
20410 | i += 1; | |
20411 | break; | |
20412 | ||
20413 | case DW_OP_const2u: | |
20414 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
20415 | i += 2; | |
20416 | break; | |
20417 | ||
20418 | case DW_OP_const2s: | |
20419 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
20420 | i += 2; | |
20421 | break; | |
d53d4ac5 | 20422 | |
21ae7a4d JK |
20423 | case DW_OP_const4u: |
20424 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
20425 | i += 4; | |
20426 | break; | |
20427 | ||
20428 | case DW_OP_const4s: | |
20429 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
20430 | i += 4; | |
20431 | break; | |
20432 | ||
585861ea JK |
20433 | case DW_OP_const8u: |
20434 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
20435 | i += 8; | |
20436 | break; | |
20437 | ||
21ae7a4d JK |
20438 | case DW_OP_constu: |
20439 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
20440 | &bytes_read); | |
20441 | i += bytes_read; | |
20442 | break; | |
20443 | ||
20444 | case DW_OP_consts: | |
20445 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
20446 | i += bytes_read; | |
20447 | break; | |
20448 | ||
20449 | case DW_OP_dup: | |
20450 | stack[stacki + 1] = stack[stacki]; | |
20451 | stacki++; | |
20452 | break; | |
20453 | ||
20454 | case DW_OP_plus: | |
20455 | stack[stacki - 1] += stack[stacki]; | |
20456 | stacki--; | |
20457 | break; | |
20458 | ||
20459 | case DW_OP_plus_uconst: | |
20460 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
20461 | &bytes_read); | |
20462 | i += bytes_read; | |
20463 | break; | |
20464 | ||
20465 | case DW_OP_minus: | |
20466 | stack[stacki - 1] -= stack[stacki]; | |
20467 | stacki--; | |
20468 | break; | |
20469 | ||
20470 | case DW_OP_deref: | |
20471 | /* If we're not the last op, then we definitely can't encode | |
20472 | this using GDB's address_class enum. This is valid for partial | |
20473 | global symbols, although the variable's address will be bogus | |
20474 | in the psymtab. */ | |
20475 | if (i < size) | |
20476 | dwarf2_complex_location_expr_complaint (); | |
20477 | break; | |
20478 | ||
20479 | case DW_OP_GNU_push_tls_address: | |
20480 | /* The top of the stack has the offset from the beginning | |
20481 | of the thread control block at which the variable is located. */ | |
20482 | /* Nothing should follow this operator, so the top of stack would | |
20483 | be returned. */ | |
20484 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
20485 | address will be bogus in the psymtab. Make it always at least |
20486 | non-zero to not look as a variable garbage collected by linker | |
20487 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
20488 | if (i < size) |
20489 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 20490 | stack[stacki]++; |
21ae7a4d JK |
20491 | break; |
20492 | ||
20493 | case DW_OP_GNU_uninit: | |
20494 | break; | |
20495 | ||
3019eac3 | 20496 | case DW_OP_GNU_addr_index: |
49f6c839 | 20497 | case DW_OP_GNU_const_index: |
3019eac3 DE |
20498 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
20499 | &bytes_read); | |
20500 | i += bytes_read; | |
20501 | break; | |
20502 | ||
21ae7a4d JK |
20503 | default: |
20504 | { | |
f39c6ffd | 20505 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
20506 | |
20507 | if (name) | |
20508 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
20509 | name); | |
20510 | else | |
20511 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
20512 | op); | |
20513 | } | |
20514 | ||
20515 | return (stack[stacki]); | |
d53d4ac5 | 20516 | } |
3c6e0cb3 | 20517 | |
21ae7a4d JK |
20518 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
20519 | outside of the allocated space. Also enforce minimum>0. */ | |
20520 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
20521 | { | |
20522 | complaint (&symfile_complaints, | |
20523 | _("location description stack overflow")); | |
20524 | return 0; | |
20525 | } | |
20526 | ||
20527 | if (stacki <= 0) | |
20528 | { | |
20529 | complaint (&symfile_complaints, | |
20530 | _("location description stack underflow")); | |
20531 | return 0; | |
20532 | } | |
20533 | } | |
20534 | return (stack[stacki]); | |
c906108c SS |
20535 | } |
20536 | ||
20537 | /* memory allocation interface */ | |
20538 | ||
c906108c | 20539 | static struct dwarf_block * |
7b5a2f43 | 20540 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
20541 | { |
20542 | struct dwarf_block *blk; | |
20543 | ||
20544 | blk = (struct dwarf_block *) | |
7b5a2f43 | 20545 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
20546 | return (blk); |
20547 | } | |
20548 | ||
c906108c | 20549 | static struct die_info * |
b60c80d6 | 20550 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
20551 | { |
20552 | struct die_info *die; | |
b60c80d6 DJ |
20553 | size_t size = sizeof (struct die_info); |
20554 | ||
20555 | if (num_attrs > 1) | |
20556 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 20557 | |
b60c80d6 | 20558 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
20559 | memset (die, 0, sizeof (struct die_info)); |
20560 | return (die); | |
20561 | } | |
2e276125 JB |
20562 | |
20563 | \f | |
20564 | /* Macro support. */ | |
20565 | ||
233d95b5 JK |
20566 | /* Return file name relative to the compilation directory of file number I in |
20567 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 20568 | responsible for freeing it. */ |
233d95b5 | 20569 | |
2e276125 | 20570 | static char * |
233d95b5 | 20571 | file_file_name (int file, struct line_header *lh) |
2e276125 | 20572 | { |
6a83a1e6 EZ |
20573 | /* Is the file number a valid index into the line header's file name |
20574 | table? Remember that file numbers start with one, not zero. */ | |
20575 | if (1 <= file && file <= lh->num_file_names) | |
20576 | { | |
20577 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 20578 | |
233d95b5 | 20579 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0) |
6a83a1e6 | 20580 | return xstrdup (fe->name); |
233d95b5 JK |
20581 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
20582 | fe->name, NULL); | |
6a83a1e6 | 20583 | } |
2e276125 JB |
20584 | else |
20585 | { | |
6a83a1e6 EZ |
20586 | /* The compiler produced a bogus file number. We can at least |
20587 | record the macro definitions made in the file, even if we | |
20588 | won't be able to find the file by name. */ | |
20589 | char fake_name[80]; | |
9a619af0 | 20590 | |
8c042590 PM |
20591 | xsnprintf (fake_name, sizeof (fake_name), |
20592 | "<bad macro file number %d>", file); | |
2e276125 | 20593 | |
6e70227d | 20594 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
20595 | _("bad file number in macro information (%d)"), |
20596 | file); | |
2e276125 | 20597 | |
6a83a1e6 | 20598 | return xstrdup (fake_name); |
2e276125 JB |
20599 | } |
20600 | } | |
20601 | ||
233d95b5 JK |
20602 | /* Return the full name of file number I in *LH's file name table. |
20603 | Use COMP_DIR as the name of the current directory of the | |
20604 | compilation. The result is allocated using xmalloc; the caller is | |
20605 | responsible for freeing it. */ | |
20606 | static char * | |
20607 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
20608 | { | |
20609 | /* Is the file number a valid index into the line header's file name | |
20610 | table? Remember that file numbers start with one, not zero. */ | |
20611 | if (1 <= file && file <= lh->num_file_names) | |
20612 | { | |
20613 | char *relative = file_file_name (file, lh); | |
20614 | ||
20615 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
20616 | return relative; | |
20617 | return reconcat (relative, comp_dir, SLASH_STRING, relative, NULL); | |
20618 | } | |
20619 | else | |
20620 | return file_file_name (file, lh); | |
20621 | } | |
20622 | ||
2e276125 JB |
20623 | |
20624 | static struct macro_source_file * | |
20625 | macro_start_file (int file, int line, | |
20626 | struct macro_source_file *current_file, | |
43f3e411 | 20627 | struct line_header *lh) |
2e276125 | 20628 | { |
233d95b5 JK |
20629 | /* File name relative to the compilation directory of this source file. */ |
20630 | char *file_name = file_file_name (file, lh); | |
2e276125 | 20631 | |
2e276125 | 20632 | if (! current_file) |
abc9d0dc | 20633 | { |
fc474241 DE |
20634 | /* Note: We don't create a macro table for this compilation unit |
20635 | at all until we actually get a filename. */ | |
43f3e411 | 20636 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 20637 | |
abc9d0dc TT |
20638 | /* If we have no current file, then this must be the start_file |
20639 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
20640 | current_file = macro_set_main (macro_table, file_name); |
20641 | macro_define_special (macro_table); | |
abc9d0dc | 20642 | } |
2e276125 | 20643 | else |
233d95b5 | 20644 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 20645 | |
233d95b5 | 20646 | xfree (file_name); |
6e70227d | 20647 | |
2e276125 JB |
20648 | return current_file; |
20649 | } | |
20650 | ||
20651 | ||
20652 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
20653 | followed by a null byte. */ | |
20654 | static char * | |
20655 | copy_string (const char *buf, int len) | |
20656 | { | |
20657 | char *s = xmalloc (len + 1); | |
9a619af0 | 20658 | |
2e276125 JB |
20659 | memcpy (s, buf, len); |
20660 | s[len] = '\0'; | |
2e276125 JB |
20661 | return s; |
20662 | } | |
20663 | ||
20664 | ||
20665 | static const char * | |
20666 | consume_improper_spaces (const char *p, const char *body) | |
20667 | { | |
20668 | if (*p == ' ') | |
20669 | { | |
4d3c2250 | 20670 | complaint (&symfile_complaints, |
3e43a32a MS |
20671 | _("macro definition contains spaces " |
20672 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 20673 | body); |
2e276125 JB |
20674 | |
20675 | while (*p == ' ') | |
20676 | p++; | |
20677 | } | |
20678 | ||
20679 | return p; | |
20680 | } | |
20681 | ||
20682 | ||
20683 | static void | |
20684 | parse_macro_definition (struct macro_source_file *file, int line, | |
20685 | const char *body) | |
20686 | { | |
20687 | const char *p; | |
20688 | ||
20689 | /* The body string takes one of two forms. For object-like macro | |
20690 | definitions, it should be: | |
20691 | ||
20692 | <macro name> " " <definition> | |
20693 | ||
20694 | For function-like macro definitions, it should be: | |
20695 | ||
20696 | <macro name> "() " <definition> | |
20697 | or | |
20698 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
20699 | ||
20700 | Spaces may appear only where explicitly indicated, and in the | |
20701 | <definition>. | |
20702 | ||
20703 | The Dwarf 2 spec says that an object-like macro's name is always | |
20704 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 20705 | the space when the macro's definition is the empty string. |
2e276125 JB |
20706 | |
20707 | The Dwarf 2 spec says that there should be no spaces between the | |
20708 | formal arguments in a function-like macro's formal argument list, | |
20709 | but versions of GCC around March 2002 include spaces after the | |
20710 | commas. */ | |
20711 | ||
20712 | ||
20713 | /* Find the extent of the macro name. The macro name is terminated | |
20714 | by either a space or null character (for an object-like macro) or | |
20715 | an opening paren (for a function-like macro). */ | |
20716 | for (p = body; *p; p++) | |
20717 | if (*p == ' ' || *p == '(') | |
20718 | break; | |
20719 | ||
20720 | if (*p == ' ' || *p == '\0') | |
20721 | { | |
20722 | /* It's an object-like macro. */ | |
20723 | int name_len = p - body; | |
20724 | char *name = copy_string (body, name_len); | |
20725 | const char *replacement; | |
20726 | ||
20727 | if (*p == ' ') | |
20728 | replacement = body + name_len + 1; | |
20729 | else | |
20730 | { | |
4d3c2250 | 20731 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20732 | replacement = body + name_len; |
20733 | } | |
6e70227d | 20734 | |
2e276125 JB |
20735 | macro_define_object (file, line, name, replacement); |
20736 | ||
20737 | xfree (name); | |
20738 | } | |
20739 | else if (*p == '(') | |
20740 | { | |
20741 | /* It's a function-like macro. */ | |
20742 | char *name = copy_string (body, p - body); | |
20743 | int argc = 0; | |
20744 | int argv_size = 1; | |
20745 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
20746 | ||
20747 | p++; | |
20748 | ||
20749 | p = consume_improper_spaces (p, body); | |
20750 | ||
20751 | /* Parse the formal argument list. */ | |
20752 | while (*p && *p != ')') | |
20753 | { | |
20754 | /* Find the extent of the current argument name. */ | |
20755 | const char *arg_start = p; | |
20756 | ||
20757 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
20758 | p++; | |
20759 | ||
20760 | if (! *p || p == arg_start) | |
4d3c2250 | 20761 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20762 | else |
20763 | { | |
20764 | /* Make sure argv has room for the new argument. */ | |
20765 | if (argc >= argv_size) | |
20766 | { | |
20767 | argv_size *= 2; | |
20768 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
20769 | } | |
20770 | ||
20771 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
20772 | } | |
20773 | ||
20774 | p = consume_improper_spaces (p, body); | |
20775 | ||
20776 | /* Consume the comma, if present. */ | |
20777 | if (*p == ',') | |
20778 | { | |
20779 | p++; | |
20780 | ||
20781 | p = consume_improper_spaces (p, body); | |
20782 | } | |
20783 | } | |
20784 | ||
20785 | if (*p == ')') | |
20786 | { | |
20787 | p++; | |
20788 | ||
20789 | if (*p == ' ') | |
20790 | /* Perfectly formed definition, no complaints. */ | |
20791 | macro_define_function (file, line, name, | |
6e70227d | 20792 | argc, (const char **) argv, |
2e276125 JB |
20793 | p + 1); |
20794 | else if (*p == '\0') | |
20795 | { | |
20796 | /* Complain, but do define it. */ | |
4d3c2250 | 20797 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 20798 | macro_define_function (file, line, name, |
6e70227d | 20799 | argc, (const char **) argv, |
2e276125 JB |
20800 | p); |
20801 | } | |
20802 | else | |
20803 | /* Just complain. */ | |
4d3c2250 | 20804 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20805 | } |
20806 | else | |
20807 | /* Just complain. */ | |
4d3c2250 | 20808 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20809 | |
20810 | xfree (name); | |
20811 | { | |
20812 | int i; | |
20813 | ||
20814 | for (i = 0; i < argc; i++) | |
20815 | xfree (argv[i]); | |
20816 | } | |
20817 | xfree (argv); | |
20818 | } | |
20819 | else | |
4d3c2250 | 20820 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20821 | } |
20822 | ||
cf2c3c16 TT |
20823 | /* Skip some bytes from BYTES according to the form given in FORM. |
20824 | Returns the new pointer. */ | |
2e276125 | 20825 | |
d521ce57 TT |
20826 | static const gdb_byte * |
20827 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
20828 | enum dwarf_form form, |
20829 | unsigned int offset_size, | |
20830 | struct dwarf2_section_info *section) | |
2e276125 | 20831 | { |
cf2c3c16 | 20832 | unsigned int bytes_read; |
2e276125 | 20833 | |
cf2c3c16 | 20834 | switch (form) |
2e276125 | 20835 | { |
cf2c3c16 TT |
20836 | case DW_FORM_data1: |
20837 | case DW_FORM_flag: | |
20838 | ++bytes; | |
20839 | break; | |
20840 | ||
20841 | case DW_FORM_data2: | |
20842 | bytes += 2; | |
20843 | break; | |
20844 | ||
20845 | case DW_FORM_data4: | |
20846 | bytes += 4; | |
20847 | break; | |
20848 | ||
20849 | case DW_FORM_data8: | |
20850 | bytes += 8; | |
20851 | break; | |
20852 | ||
20853 | case DW_FORM_string: | |
20854 | read_direct_string (abfd, bytes, &bytes_read); | |
20855 | bytes += bytes_read; | |
20856 | break; | |
20857 | ||
20858 | case DW_FORM_sec_offset: | |
20859 | case DW_FORM_strp: | |
36586728 | 20860 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
20861 | bytes += offset_size; |
20862 | break; | |
20863 | ||
20864 | case DW_FORM_block: | |
20865 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
20866 | bytes += bytes_read; | |
20867 | break; | |
20868 | ||
20869 | case DW_FORM_block1: | |
20870 | bytes += 1 + read_1_byte (abfd, bytes); | |
20871 | break; | |
20872 | case DW_FORM_block2: | |
20873 | bytes += 2 + read_2_bytes (abfd, bytes); | |
20874 | break; | |
20875 | case DW_FORM_block4: | |
20876 | bytes += 4 + read_4_bytes (abfd, bytes); | |
20877 | break; | |
20878 | ||
20879 | case DW_FORM_sdata: | |
20880 | case DW_FORM_udata: | |
3019eac3 DE |
20881 | case DW_FORM_GNU_addr_index: |
20882 | case DW_FORM_GNU_str_index: | |
d521ce57 | 20883 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
20884 | if (bytes == NULL) |
20885 | { | |
20886 | dwarf2_section_buffer_overflow_complaint (section); | |
20887 | return NULL; | |
20888 | } | |
cf2c3c16 TT |
20889 | break; |
20890 | ||
20891 | default: | |
20892 | { | |
20893 | complain: | |
20894 | complaint (&symfile_complaints, | |
20895 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 20896 | form, get_section_name (section)); |
cf2c3c16 TT |
20897 | return NULL; |
20898 | } | |
2e276125 JB |
20899 | } |
20900 | ||
cf2c3c16 TT |
20901 | return bytes; |
20902 | } | |
757a13d0 | 20903 | |
cf2c3c16 TT |
20904 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
20905 | opcode. Returns an updated pointer to the macro data buffer; or, | |
20906 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 20907 | |
d521ce57 | 20908 | static const gdb_byte * |
cf2c3c16 | 20909 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
20910 | const gdb_byte **opcode_definitions, |
20911 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
20912 | bfd *abfd, |
20913 | unsigned int offset_size, | |
20914 | struct dwarf2_section_info *section) | |
20915 | { | |
20916 | unsigned int bytes_read, i; | |
20917 | unsigned long arg; | |
d521ce57 | 20918 | const gdb_byte *defn; |
2e276125 | 20919 | |
cf2c3c16 | 20920 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 20921 | { |
cf2c3c16 TT |
20922 | complaint (&symfile_complaints, |
20923 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
20924 | opcode); | |
20925 | return NULL; | |
20926 | } | |
2e276125 | 20927 | |
cf2c3c16 TT |
20928 | defn = opcode_definitions[opcode]; |
20929 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
20930 | defn += bytes_read; | |
2e276125 | 20931 | |
cf2c3c16 TT |
20932 | for (i = 0; i < arg; ++i) |
20933 | { | |
f664829e DE |
20934 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
20935 | section); | |
cf2c3c16 TT |
20936 | if (mac_ptr == NULL) |
20937 | { | |
20938 | /* skip_form_bytes already issued the complaint. */ | |
20939 | return NULL; | |
20940 | } | |
20941 | } | |
757a13d0 | 20942 | |
cf2c3c16 TT |
20943 | return mac_ptr; |
20944 | } | |
757a13d0 | 20945 | |
cf2c3c16 TT |
20946 | /* A helper function which parses the header of a macro section. |
20947 | If the macro section is the extended (for now called "GNU") type, | |
20948 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
20949 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 20950 | |
d521ce57 TT |
20951 | static const gdb_byte * |
20952 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 20953 | bfd *abfd, |
d521ce57 | 20954 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
20955 | unsigned int *offset_size, |
20956 | int section_is_gnu) | |
20957 | { | |
20958 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 20959 | |
cf2c3c16 TT |
20960 | if (section_is_gnu) |
20961 | { | |
20962 | unsigned int version, flags; | |
757a13d0 | 20963 | |
cf2c3c16 TT |
20964 | version = read_2_bytes (abfd, mac_ptr); |
20965 | if (version != 4) | |
20966 | { | |
20967 | complaint (&symfile_complaints, | |
20968 | _("unrecognized version `%d' in .debug_macro section"), | |
20969 | version); | |
20970 | return NULL; | |
20971 | } | |
20972 | mac_ptr += 2; | |
757a13d0 | 20973 | |
cf2c3c16 TT |
20974 | flags = read_1_byte (abfd, mac_ptr); |
20975 | ++mac_ptr; | |
20976 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 20977 | |
cf2c3c16 TT |
20978 | if ((flags & 2) != 0) |
20979 | /* We don't need the line table offset. */ | |
20980 | mac_ptr += *offset_size; | |
757a13d0 | 20981 | |
cf2c3c16 TT |
20982 | /* Vendor opcode descriptions. */ |
20983 | if ((flags & 4) != 0) | |
20984 | { | |
20985 | unsigned int i, count; | |
757a13d0 | 20986 | |
cf2c3c16 TT |
20987 | count = read_1_byte (abfd, mac_ptr); |
20988 | ++mac_ptr; | |
20989 | for (i = 0; i < count; ++i) | |
20990 | { | |
20991 | unsigned int opcode, bytes_read; | |
20992 | unsigned long arg; | |
20993 | ||
20994 | opcode = read_1_byte (abfd, mac_ptr); | |
20995 | ++mac_ptr; | |
20996 | opcode_definitions[opcode] = mac_ptr; | |
20997 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20998 | mac_ptr += bytes_read; | |
20999 | mac_ptr += arg; | |
21000 | } | |
757a13d0 | 21001 | } |
cf2c3c16 | 21002 | } |
757a13d0 | 21003 | |
cf2c3c16 TT |
21004 | return mac_ptr; |
21005 | } | |
757a13d0 | 21006 | |
cf2c3c16 | 21007 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 21008 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
21009 | |
21010 | static void | |
d521ce57 TT |
21011 | dwarf_decode_macro_bytes (bfd *abfd, |
21012 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 21013 | struct macro_source_file *current_file, |
43f3e411 | 21014 | struct line_header *lh, |
cf2c3c16 | 21015 | struct dwarf2_section_info *section, |
36586728 | 21016 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 21017 | unsigned int offset_size, |
8fc3fc34 | 21018 | htab_t include_hash) |
cf2c3c16 | 21019 | { |
4d663531 | 21020 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
21021 | enum dwarf_macro_record_type macinfo_type; |
21022 | int at_commandline; | |
d521ce57 | 21023 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 21024 | |
cf2c3c16 TT |
21025 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
21026 | &offset_size, section_is_gnu); | |
21027 | if (mac_ptr == NULL) | |
21028 | { | |
21029 | /* We already issued a complaint. */ | |
21030 | return; | |
21031 | } | |
757a13d0 JK |
21032 | |
21033 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
21034 | GDB is still reading the definitions from command line. First | |
21035 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
21036 | to create CURRENT_FILE for the main source holding also the command line | |
21037 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
21038 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
21039 | ||
21040 | at_commandline = 1; | |
21041 | ||
21042 | do | |
21043 | { | |
21044 | /* Do we at least have room for a macinfo type byte? */ | |
21045 | if (mac_ptr >= mac_end) | |
21046 | { | |
f664829e | 21047 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
21048 | break; |
21049 | } | |
21050 | ||
21051 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
21052 | mac_ptr++; | |
21053 | ||
cf2c3c16 TT |
21054 | /* Note that we rely on the fact that the corresponding GNU and |
21055 | DWARF constants are the same. */ | |
757a13d0 JK |
21056 | switch (macinfo_type) |
21057 | { | |
21058 | /* A zero macinfo type indicates the end of the macro | |
21059 | information. */ | |
21060 | case 0: | |
21061 | break; | |
2e276125 | 21062 | |
cf2c3c16 TT |
21063 | case DW_MACRO_GNU_define: |
21064 | case DW_MACRO_GNU_undef: | |
21065 | case DW_MACRO_GNU_define_indirect: | |
21066 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
21067 | case DW_MACRO_GNU_define_indirect_alt: |
21068 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 21069 | { |
891d2f0b | 21070 | unsigned int bytes_read; |
2e276125 | 21071 | int line; |
d521ce57 | 21072 | const char *body; |
cf2c3c16 | 21073 | int is_define; |
2e276125 | 21074 | |
cf2c3c16 TT |
21075 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
21076 | mac_ptr += bytes_read; | |
21077 | ||
21078 | if (macinfo_type == DW_MACRO_GNU_define | |
21079 | || macinfo_type == DW_MACRO_GNU_undef) | |
21080 | { | |
21081 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
21082 | mac_ptr += bytes_read; | |
21083 | } | |
21084 | else | |
21085 | { | |
21086 | LONGEST str_offset; | |
21087 | ||
21088 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21089 | mac_ptr += offset_size; | |
2e276125 | 21090 | |
36586728 | 21091 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
21092 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
21093 | || section_is_dwz) | |
36586728 TT |
21094 | { |
21095 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21096 | ||
21097 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
21098 | } | |
21099 | else | |
21100 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
21101 | } |
21102 | ||
21103 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
21104 | || macinfo_type == DW_MACRO_GNU_define_indirect |
21105 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 21106 | if (! current_file) |
757a13d0 JK |
21107 | { |
21108 | /* DWARF violation as no main source is present. */ | |
21109 | complaint (&symfile_complaints, | |
21110 | _("debug info with no main source gives macro %s " | |
21111 | "on line %d: %s"), | |
cf2c3c16 TT |
21112 | is_define ? _("definition") : _("undefinition"), |
21113 | line, body); | |
757a13d0 JK |
21114 | break; |
21115 | } | |
3e43a32a MS |
21116 | if ((line == 0 && !at_commandline) |
21117 | || (line != 0 && at_commandline)) | |
4d3c2250 | 21118 | complaint (&symfile_complaints, |
757a13d0 JK |
21119 | _("debug info gives %s macro %s with %s line %d: %s"), |
21120 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 21121 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
21122 | line == 0 ? _("zero") : _("non-zero"), line, body); |
21123 | ||
cf2c3c16 | 21124 | if (is_define) |
757a13d0 | 21125 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
21126 | else |
21127 | { | |
21128 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
21129 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
21130 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
21131 | macro_undef (current_file, line, body); |
21132 | } | |
2e276125 JB |
21133 | } |
21134 | break; | |
21135 | ||
cf2c3c16 | 21136 | case DW_MACRO_GNU_start_file: |
2e276125 | 21137 | { |
891d2f0b | 21138 | unsigned int bytes_read; |
2e276125 JB |
21139 | int line, file; |
21140 | ||
21141 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21142 | mac_ptr += bytes_read; | |
21143 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21144 | mac_ptr += bytes_read; | |
21145 | ||
3e43a32a MS |
21146 | if ((line == 0 && !at_commandline) |
21147 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
21148 | complaint (&symfile_complaints, |
21149 | _("debug info gives source %d included " | |
21150 | "from %s at %s line %d"), | |
21151 | file, at_commandline ? _("command-line") : _("file"), | |
21152 | line == 0 ? _("zero") : _("non-zero"), line); | |
21153 | ||
21154 | if (at_commandline) | |
21155 | { | |
cf2c3c16 TT |
21156 | /* This DW_MACRO_GNU_start_file was executed in the |
21157 | pass one. */ | |
757a13d0 JK |
21158 | at_commandline = 0; |
21159 | } | |
21160 | else | |
43f3e411 | 21161 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
21162 | } |
21163 | break; | |
21164 | ||
cf2c3c16 | 21165 | case DW_MACRO_GNU_end_file: |
2e276125 | 21166 | if (! current_file) |
4d3c2250 | 21167 | complaint (&symfile_complaints, |
3e43a32a MS |
21168 | _("macro debug info has an unmatched " |
21169 | "`close_file' directive")); | |
2e276125 JB |
21170 | else |
21171 | { | |
21172 | current_file = current_file->included_by; | |
21173 | if (! current_file) | |
21174 | { | |
cf2c3c16 | 21175 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
21176 | |
21177 | /* GCC circa March 2002 doesn't produce the zero | |
21178 | type byte marking the end of the compilation | |
21179 | unit. Complain if it's not there, but exit no | |
21180 | matter what. */ | |
21181 | ||
21182 | /* Do we at least have room for a macinfo type byte? */ | |
21183 | if (mac_ptr >= mac_end) | |
21184 | { | |
f664829e | 21185 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
21186 | return; |
21187 | } | |
21188 | ||
21189 | /* We don't increment mac_ptr here, so this is just | |
21190 | a look-ahead. */ | |
21191 | next_type = read_1_byte (abfd, mac_ptr); | |
21192 | if (next_type != 0) | |
4d3c2250 | 21193 | complaint (&symfile_complaints, |
3e43a32a MS |
21194 | _("no terminating 0-type entry for " |
21195 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
21196 | |
21197 | return; | |
21198 | } | |
21199 | } | |
21200 | break; | |
21201 | ||
cf2c3c16 | 21202 | case DW_MACRO_GNU_transparent_include: |
36586728 | 21203 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
21204 | { |
21205 | LONGEST offset; | |
8fc3fc34 | 21206 | void **slot; |
a036ba48 TT |
21207 | bfd *include_bfd = abfd; |
21208 | struct dwarf2_section_info *include_section = section; | |
21209 | struct dwarf2_section_info alt_section; | |
d521ce57 | 21210 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 21211 | int is_dwz = section_is_dwz; |
d521ce57 | 21212 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
21213 | |
21214 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21215 | mac_ptr += offset_size; | |
21216 | ||
a036ba48 TT |
21217 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
21218 | { | |
21219 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21220 | ||
4d663531 | 21221 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 21222 | |
a036ba48 | 21223 | include_section = &dwz->macro; |
a32a8923 | 21224 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
21225 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
21226 | is_dwz = 1; | |
21227 | } | |
21228 | ||
21229 | new_mac_ptr = include_section->buffer + offset; | |
21230 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
21231 | ||
8fc3fc34 TT |
21232 | if (*slot != NULL) |
21233 | { | |
21234 | /* This has actually happened; see | |
21235 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
21236 | complaint (&symfile_complaints, | |
21237 | _("recursive DW_MACRO_GNU_transparent_include in " | |
21238 | ".debug_macro section")); | |
21239 | } | |
21240 | else | |
21241 | { | |
d521ce57 | 21242 | *slot = (void *) new_mac_ptr; |
36586728 | 21243 | |
a036ba48 | 21244 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
43f3e411 | 21245 | include_mac_end, current_file, lh, |
36586728 | 21246 | section, section_is_gnu, is_dwz, |
4d663531 | 21247 | offset_size, include_hash); |
8fc3fc34 | 21248 | |
d521ce57 | 21249 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 21250 | } |
cf2c3c16 TT |
21251 | } |
21252 | break; | |
21253 | ||
2e276125 | 21254 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
21255 | if (!section_is_gnu) |
21256 | { | |
21257 | unsigned int bytes_read; | |
21258 | int constant; | |
2e276125 | 21259 | |
cf2c3c16 TT |
21260 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
21261 | mac_ptr += bytes_read; | |
21262 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21263 | mac_ptr += bytes_read; | |
2e276125 | 21264 | |
cf2c3c16 TT |
21265 | /* We don't recognize any vendor extensions. */ |
21266 | break; | |
21267 | } | |
21268 | /* FALLTHROUGH */ | |
21269 | ||
21270 | default: | |
21271 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 21272 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
21273 | section); |
21274 | if (mac_ptr == NULL) | |
21275 | return; | |
21276 | break; | |
2e276125 | 21277 | } |
757a13d0 | 21278 | } while (macinfo_type != 0); |
2e276125 | 21279 | } |
8e19ed76 | 21280 | |
cf2c3c16 | 21281 | static void |
09262596 | 21282 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 21283 | int section_is_gnu) |
cf2c3c16 | 21284 | { |
bb5ed363 | 21285 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
21286 | struct line_header *lh = cu->line_header; |
21287 | bfd *abfd; | |
d521ce57 | 21288 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
21289 | struct macro_source_file *current_file = 0; |
21290 | enum dwarf_macro_record_type macinfo_type; | |
21291 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 21292 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 TT |
21293 | struct cleanup *cleanup; |
21294 | htab_t include_hash; | |
21295 | void **slot; | |
09262596 DE |
21296 | struct dwarf2_section_info *section; |
21297 | const char *section_name; | |
21298 | ||
21299 | if (cu->dwo_unit != NULL) | |
21300 | { | |
21301 | if (section_is_gnu) | |
21302 | { | |
21303 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
21304 | section_name = ".debug_macro.dwo"; | |
21305 | } | |
21306 | else | |
21307 | { | |
21308 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
21309 | section_name = ".debug_macinfo.dwo"; | |
21310 | } | |
21311 | } | |
21312 | else | |
21313 | { | |
21314 | if (section_is_gnu) | |
21315 | { | |
21316 | section = &dwarf2_per_objfile->macro; | |
21317 | section_name = ".debug_macro"; | |
21318 | } | |
21319 | else | |
21320 | { | |
21321 | section = &dwarf2_per_objfile->macinfo; | |
21322 | section_name = ".debug_macinfo"; | |
21323 | } | |
21324 | } | |
cf2c3c16 | 21325 | |
bb5ed363 | 21326 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
21327 | if (section->buffer == NULL) |
21328 | { | |
fceca515 | 21329 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
21330 | return; |
21331 | } | |
a32a8923 | 21332 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
21333 | |
21334 | /* First pass: Find the name of the base filename. | |
21335 | This filename is needed in order to process all macros whose definition | |
21336 | (or undefinition) comes from the command line. These macros are defined | |
21337 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
21338 | associated to the base file. | |
21339 | ||
21340 | To determine the base file name, we scan the macro definitions until we | |
21341 | reach the first DW_MACINFO_start_file entry. We then initialize | |
21342 | CURRENT_FILE accordingly so that any macro definition found before the | |
21343 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
21344 | ||
21345 | mac_ptr = section->buffer + offset; | |
21346 | mac_end = section->buffer + section->size; | |
21347 | ||
21348 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
21349 | &offset_size, section_is_gnu); | |
21350 | if (mac_ptr == NULL) | |
21351 | { | |
21352 | /* We already issued a complaint. */ | |
21353 | return; | |
21354 | } | |
21355 | ||
21356 | do | |
21357 | { | |
21358 | /* Do we at least have room for a macinfo type byte? */ | |
21359 | if (mac_ptr >= mac_end) | |
21360 | { | |
21361 | /* Complaint is printed during the second pass as GDB will probably | |
21362 | stop the first pass earlier upon finding | |
21363 | DW_MACINFO_start_file. */ | |
21364 | break; | |
21365 | } | |
21366 | ||
21367 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
21368 | mac_ptr++; | |
21369 | ||
21370 | /* Note that we rely on the fact that the corresponding GNU and | |
21371 | DWARF constants are the same. */ | |
21372 | switch (macinfo_type) | |
21373 | { | |
21374 | /* A zero macinfo type indicates the end of the macro | |
21375 | information. */ | |
21376 | case 0: | |
21377 | break; | |
21378 | ||
21379 | case DW_MACRO_GNU_define: | |
21380 | case DW_MACRO_GNU_undef: | |
21381 | /* Only skip the data by MAC_PTR. */ | |
21382 | { | |
21383 | unsigned int bytes_read; | |
21384 | ||
21385 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21386 | mac_ptr += bytes_read; | |
21387 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21388 | mac_ptr += bytes_read; | |
21389 | } | |
21390 | break; | |
21391 | ||
21392 | case DW_MACRO_GNU_start_file: | |
21393 | { | |
21394 | unsigned int bytes_read; | |
21395 | int line, file; | |
21396 | ||
21397 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21398 | mac_ptr += bytes_read; | |
21399 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21400 | mac_ptr += bytes_read; | |
21401 | ||
43f3e411 | 21402 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
21403 | } |
21404 | break; | |
21405 | ||
21406 | case DW_MACRO_GNU_end_file: | |
21407 | /* No data to skip by MAC_PTR. */ | |
21408 | break; | |
21409 | ||
21410 | case DW_MACRO_GNU_define_indirect: | |
21411 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
21412 | case DW_MACRO_GNU_define_indirect_alt: |
21413 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
21414 | { |
21415 | unsigned int bytes_read; | |
21416 | ||
21417 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21418 | mac_ptr += bytes_read; | |
21419 | mac_ptr += offset_size; | |
21420 | } | |
21421 | break; | |
21422 | ||
21423 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 21424 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
21425 | /* Note that, according to the spec, a transparent include |
21426 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
21427 | skip this opcode. */ | |
21428 | mac_ptr += offset_size; | |
21429 | break; | |
21430 | ||
21431 | case DW_MACINFO_vendor_ext: | |
21432 | /* Only skip the data by MAC_PTR. */ | |
21433 | if (!section_is_gnu) | |
21434 | { | |
21435 | unsigned int bytes_read; | |
21436 | ||
21437 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21438 | mac_ptr += bytes_read; | |
21439 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
21440 | mac_ptr += bytes_read; | |
21441 | } | |
21442 | /* FALLTHROUGH */ | |
21443 | ||
21444 | default: | |
21445 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 21446 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
21447 | section); |
21448 | if (mac_ptr == NULL) | |
21449 | return; | |
21450 | break; | |
21451 | } | |
21452 | } while (macinfo_type != 0 && current_file == NULL); | |
21453 | ||
21454 | /* Second pass: Process all entries. | |
21455 | ||
21456 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
21457 | command-line macro definitions/undefinitions. This flag is unset when we | |
21458 | reach the first DW_MACINFO_start_file entry. */ | |
21459 | ||
8fc3fc34 TT |
21460 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
21461 | NULL, xcalloc, xfree); | |
21462 | cleanup = make_cleanup_htab_delete (include_hash); | |
21463 | mac_ptr = section->buffer + offset; | |
21464 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
d521ce57 | 21465 | *slot = (void *) mac_ptr; |
8fc3fc34 | 21466 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
43f3e411 | 21467 | current_file, lh, section, |
4d663531 | 21468 | section_is_gnu, 0, offset_size, include_hash); |
8fc3fc34 | 21469 | do_cleanups (cleanup); |
cf2c3c16 TT |
21470 | } |
21471 | ||
8e19ed76 | 21472 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 21473 | if so return true else false. */ |
380bca97 | 21474 | |
8e19ed76 | 21475 | static int |
6e5a29e1 | 21476 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
21477 | { |
21478 | return (attr == NULL ? 0 : | |
21479 | attr->form == DW_FORM_block1 | |
21480 | || attr->form == DW_FORM_block2 | |
21481 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
21482 | || attr->form == DW_FORM_block |
21483 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 21484 | } |
4c2df51b | 21485 | |
c6a0999f JB |
21486 | /* Return non-zero if ATTR's value is a section offset --- classes |
21487 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
21488 | You may use DW_UNSND (attr) to retrieve such offsets. | |
21489 | ||
21490 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
21491 | may have a value that belongs to more than one of these classes; it | |
21492 | would be ambiguous if we did, because we use the same forms for all | |
21493 | of them. */ | |
380bca97 | 21494 | |
3690dd37 | 21495 | static int |
6e5a29e1 | 21496 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
21497 | { |
21498 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
21499 | || attr->form == DW_FORM_data8 |
21500 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
21501 | } |
21502 | ||
3690dd37 JB |
21503 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
21504 | zero otherwise. When this function returns true, you can apply | |
21505 | dwarf2_get_attr_constant_value to it. | |
21506 | ||
21507 | However, note that for some attributes you must check | |
21508 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
21509 | and DW_FORM_data8 are members of both the constant class, and of | |
21510 | the classes that contain offsets into other debug sections | |
21511 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
21512 | that, if an attribute's can be either a constant or one of the | |
21513 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
21514 | taken as section offsets, not constants. */ | |
380bca97 | 21515 | |
3690dd37 | 21516 | static int |
6e5a29e1 | 21517 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
21518 | { |
21519 | switch (attr->form) | |
21520 | { | |
21521 | case DW_FORM_sdata: | |
21522 | case DW_FORM_udata: | |
21523 | case DW_FORM_data1: | |
21524 | case DW_FORM_data2: | |
21525 | case DW_FORM_data4: | |
21526 | case DW_FORM_data8: | |
21527 | return 1; | |
21528 | default: | |
21529 | return 0; | |
21530 | } | |
21531 | } | |
21532 | ||
7771576e SA |
21533 | |
21534 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
21535 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
21536 | ||
21537 | static int | |
6e5a29e1 | 21538 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
21539 | { |
21540 | switch (attr->form) | |
21541 | { | |
21542 | case DW_FORM_ref_addr: | |
21543 | case DW_FORM_ref1: | |
21544 | case DW_FORM_ref2: | |
21545 | case DW_FORM_ref4: | |
21546 | case DW_FORM_ref8: | |
21547 | case DW_FORM_ref_udata: | |
21548 | case DW_FORM_GNU_ref_alt: | |
21549 | return 1; | |
21550 | default: | |
21551 | return 0; | |
21552 | } | |
21553 | } | |
21554 | ||
3019eac3 DE |
21555 | /* Return the .debug_loc section to use for CU. |
21556 | For DWO files use .debug_loc.dwo. */ | |
21557 | ||
21558 | static struct dwarf2_section_info * | |
21559 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
21560 | { | |
21561 | if (cu->dwo_unit) | |
21562 | return &cu->dwo_unit->dwo_file->sections.loc; | |
21563 | return &dwarf2_per_objfile->loc; | |
21564 | } | |
21565 | ||
8cf6f0b1 TT |
21566 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
21567 | ||
21568 | static void | |
21569 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
21570 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 21571 | const struct attribute *attr) |
8cf6f0b1 | 21572 | { |
3019eac3 DE |
21573 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
21574 | ||
21575 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
21576 | |
21577 | baton->per_cu = cu->per_cu; | |
21578 | gdb_assert (baton->per_cu); | |
21579 | /* We don't know how long the location list is, but make sure we | |
21580 | don't run off the edge of the section. */ | |
3019eac3 DE |
21581 | baton->size = section->size - DW_UNSND (attr); |
21582 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 21583 | baton->base_address = cu->base_address; |
f664829e | 21584 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
21585 | } |
21586 | ||
4c2df51b | 21587 | static void |
ff39bb5e | 21588 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 21589 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 21590 | { |
bb5ed363 | 21591 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 21592 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 21593 | |
3690dd37 | 21594 | if (attr_form_is_section_offset (attr) |
3019eac3 | 21595 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
21596 | the section. If so, fall through to the complaint in the |
21597 | other branch. */ | |
3019eac3 | 21598 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 21599 | { |
0d53c4c4 | 21600 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 21601 | |
bb5ed363 | 21602 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 21603 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 21604 | |
8cf6f0b1 | 21605 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 21606 | |
d00adf39 | 21607 | if (cu->base_known == 0) |
0d53c4c4 | 21608 | complaint (&symfile_complaints, |
3e43a32a MS |
21609 | _("Location list used without " |
21610 | "specifying the CU base address.")); | |
4c2df51b | 21611 | |
f1e6e072 TT |
21612 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
21613 | ? dwarf2_loclist_block_index | |
21614 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
21615 | SYMBOL_LOCATION_BATON (sym) = baton; |
21616 | } | |
21617 | else | |
21618 | { | |
21619 | struct dwarf2_locexpr_baton *baton; | |
21620 | ||
bb5ed363 | 21621 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 21622 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
21623 | baton->per_cu = cu->per_cu; |
21624 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
21625 | |
21626 | if (attr_form_is_block (attr)) | |
21627 | { | |
21628 | /* Note that we're just copying the block's data pointer | |
21629 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
21630 | info_buffer for SYM's objfile; right now we never release |
21631 | that buffer, but when we do clean up properly this may | |
21632 | need to change. */ | |
0d53c4c4 DJ |
21633 | baton->size = DW_BLOCK (attr)->size; |
21634 | baton->data = DW_BLOCK (attr)->data; | |
21635 | } | |
21636 | else | |
21637 | { | |
21638 | dwarf2_invalid_attrib_class_complaint ("location description", | |
21639 | SYMBOL_NATURAL_NAME (sym)); | |
21640 | baton->size = 0; | |
0d53c4c4 | 21641 | } |
6e70227d | 21642 | |
f1e6e072 TT |
21643 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
21644 | ? dwarf2_locexpr_block_index | |
21645 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
21646 | SYMBOL_LOCATION_BATON (sym) = baton; |
21647 | } | |
4c2df51b | 21648 | } |
6502dd73 | 21649 | |
9aa1f1e3 TT |
21650 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
21651 | came from a separate debuginfo file, then the master objfile is | |
21652 | returned. */ | |
ae0d2f24 UW |
21653 | |
21654 | struct objfile * | |
21655 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
21656 | { | |
9291a0cd | 21657 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
21658 | |
21659 | /* Return the master objfile, so that we can report and look up the | |
21660 | correct file containing this variable. */ | |
21661 | if (objfile->separate_debug_objfile_backlink) | |
21662 | objfile = objfile->separate_debug_objfile_backlink; | |
21663 | ||
21664 | return objfile; | |
21665 | } | |
21666 | ||
96408a79 SA |
21667 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
21668 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
21669 | CU_HEADERP first. */ | |
21670 | ||
21671 | static const struct comp_unit_head * | |
21672 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
21673 | struct dwarf2_per_cu_data *per_cu) | |
21674 | { | |
d521ce57 | 21675 | const gdb_byte *info_ptr; |
96408a79 SA |
21676 | |
21677 | if (per_cu->cu) | |
21678 | return &per_cu->cu->header; | |
21679 | ||
8a0459fd | 21680 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
21681 | |
21682 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 21683 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
21684 | |
21685 | return cu_headerp; | |
21686 | } | |
21687 | ||
ae0d2f24 UW |
21688 | /* Return the address size given in the compilation unit header for CU. */ |
21689 | ||
98714339 | 21690 | int |
ae0d2f24 UW |
21691 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
21692 | { | |
96408a79 SA |
21693 | struct comp_unit_head cu_header_local; |
21694 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 21695 | |
96408a79 SA |
21696 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
21697 | ||
21698 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
21699 | } |
21700 | ||
9eae7c52 TT |
21701 | /* Return the offset size given in the compilation unit header for CU. */ |
21702 | ||
21703 | int | |
21704 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
21705 | { | |
96408a79 SA |
21706 | struct comp_unit_head cu_header_local; |
21707 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 21708 | |
96408a79 SA |
21709 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
21710 | ||
21711 | return cu_headerp->offset_size; | |
21712 | } | |
21713 | ||
21714 | /* See its dwarf2loc.h declaration. */ | |
21715 | ||
21716 | int | |
21717 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
21718 | { | |
21719 | struct comp_unit_head cu_header_local; | |
21720 | const struct comp_unit_head *cu_headerp; | |
21721 | ||
21722 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
21723 | ||
21724 | if (cu_headerp->version == 2) | |
21725 | return cu_headerp->addr_size; | |
21726 | else | |
21727 | return cu_headerp->offset_size; | |
181cebd4 JK |
21728 | } |
21729 | ||
9aa1f1e3 TT |
21730 | /* Return the text offset of the CU. The returned offset comes from |
21731 | this CU's objfile. If this objfile came from a separate debuginfo | |
21732 | file, then the offset may be different from the corresponding | |
21733 | offset in the parent objfile. */ | |
21734 | ||
21735 | CORE_ADDR | |
21736 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
21737 | { | |
bb3fa9d0 | 21738 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
21739 | |
21740 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
21741 | } | |
21742 | ||
348e048f DE |
21743 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
21744 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
21745 | |
21746 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 21747 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 21748 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
21749 | struct objfile *objfile) |
21750 | { | |
21751 | struct dwarf2_per_cu_data *this_cu; | |
21752 | int low, high; | |
36586728 | 21753 | const sect_offset *cu_off; |
ae038cb0 | 21754 | |
ae038cb0 DJ |
21755 | low = 0; |
21756 | high = dwarf2_per_objfile->n_comp_units - 1; | |
21757 | while (high > low) | |
21758 | { | |
36586728 | 21759 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 21760 | int mid = low + (high - low) / 2; |
9a619af0 | 21761 | |
36586728 TT |
21762 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
21763 | cu_off = &mid_cu->offset; | |
21764 | if (mid_cu->is_dwz > offset_in_dwz | |
21765 | || (mid_cu->is_dwz == offset_in_dwz | |
21766 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
21767 | high = mid; |
21768 | else | |
21769 | low = mid + 1; | |
21770 | } | |
21771 | gdb_assert (low == high); | |
36586728 TT |
21772 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
21773 | cu_off = &this_cu->offset; | |
21774 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 21775 | { |
36586728 | 21776 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
21777 | error (_("Dwarf Error: could not find partial DIE containing " |
21778 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 21779 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 21780 | |
b64f50a1 JK |
21781 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
21782 | <= offset.sect_off); | |
ae038cb0 DJ |
21783 | return dwarf2_per_objfile->all_comp_units[low-1]; |
21784 | } | |
21785 | else | |
21786 | { | |
21787 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
21788 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
21789 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
21790 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
21791 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
21792 | return this_cu; |
21793 | } | |
21794 | } | |
21795 | ||
23745b47 | 21796 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 21797 | |
9816fde3 | 21798 | static void |
23745b47 | 21799 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 21800 | { |
9816fde3 | 21801 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
21802 | per_cu->cu = cu; |
21803 | cu->per_cu = per_cu; | |
21804 | cu->objfile = per_cu->objfile; | |
93311388 | 21805 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
21806 | } |
21807 | ||
21808 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
21809 | ||
21810 | static void | |
95554aad TT |
21811 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
21812 | enum language pretend_language) | |
9816fde3 JK |
21813 | { |
21814 | struct attribute *attr; | |
21815 | ||
21816 | /* Set the language we're debugging. */ | |
21817 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
21818 | if (attr) | |
21819 | set_cu_language (DW_UNSND (attr), cu); | |
21820 | else | |
9cded63f | 21821 | { |
95554aad | 21822 | cu->language = pretend_language; |
9cded63f TT |
21823 | cu->language_defn = language_def (cu->language); |
21824 | } | |
dee91e82 DE |
21825 | |
21826 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
21827 | if (attr) | |
21828 | cu->producer = DW_STRING (attr); | |
93311388 DE |
21829 | } |
21830 | ||
ae038cb0 DJ |
21831 | /* Release one cached compilation unit, CU. We unlink it from the tree |
21832 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
21833 | the caller is responsible for that. |
21834 | NOTE: DATA is a void * because this function is also used as a | |
21835 | cleanup routine. */ | |
ae038cb0 DJ |
21836 | |
21837 | static void | |
68dc6402 | 21838 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
21839 | { |
21840 | struct dwarf2_cu *cu = data; | |
21841 | ||
23745b47 DE |
21842 | gdb_assert (cu->per_cu != NULL); |
21843 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
21844 | cu->per_cu = NULL; |
21845 | ||
21846 | obstack_free (&cu->comp_unit_obstack, NULL); | |
21847 | ||
21848 | xfree (cu); | |
21849 | } | |
21850 | ||
72bf9492 | 21851 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 21852 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 21853 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
21854 | |
21855 | static void | |
21856 | free_stack_comp_unit (void *data) | |
21857 | { | |
21858 | struct dwarf2_cu *cu = data; | |
21859 | ||
23745b47 DE |
21860 | gdb_assert (cu->per_cu != NULL); |
21861 | cu->per_cu->cu = NULL; | |
21862 | cu->per_cu = NULL; | |
21863 | ||
72bf9492 DJ |
21864 | obstack_free (&cu->comp_unit_obstack, NULL); |
21865 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
21866 | } |
21867 | ||
21868 | /* Free all cached compilation units. */ | |
21869 | ||
21870 | static void | |
21871 | free_cached_comp_units (void *data) | |
21872 | { | |
21873 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21874 | ||
21875 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21876 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21877 | while (per_cu != NULL) | |
21878 | { | |
21879 | struct dwarf2_per_cu_data *next_cu; | |
21880 | ||
21881 | next_cu = per_cu->cu->read_in_chain; | |
21882 | ||
68dc6402 | 21883 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21884 | *last_chain = next_cu; |
21885 | ||
21886 | per_cu = next_cu; | |
21887 | } | |
21888 | } | |
21889 | ||
21890 | /* Increase the age counter on each cached compilation unit, and free | |
21891 | any that are too old. */ | |
21892 | ||
21893 | static void | |
21894 | age_cached_comp_units (void) | |
21895 | { | |
21896 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21897 | ||
21898 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
21899 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21900 | while (per_cu != NULL) | |
21901 | { | |
21902 | per_cu->cu->last_used ++; | |
21903 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
21904 | dwarf2_mark (per_cu->cu); | |
21905 | per_cu = per_cu->cu->read_in_chain; | |
21906 | } | |
21907 | ||
21908 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21909 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21910 | while (per_cu != NULL) | |
21911 | { | |
21912 | struct dwarf2_per_cu_data *next_cu; | |
21913 | ||
21914 | next_cu = per_cu->cu->read_in_chain; | |
21915 | ||
21916 | if (!per_cu->cu->mark) | |
21917 | { | |
68dc6402 | 21918 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21919 | *last_chain = next_cu; |
21920 | } | |
21921 | else | |
21922 | last_chain = &per_cu->cu->read_in_chain; | |
21923 | ||
21924 | per_cu = next_cu; | |
21925 | } | |
21926 | } | |
21927 | ||
21928 | /* Remove a single compilation unit from the cache. */ | |
21929 | ||
21930 | static void | |
dee91e82 | 21931 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
21932 | { |
21933 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21934 | ||
21935 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21936 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21937 | while (per_cu != NULL) | |
21938 | { | |
21939 | struct dwarf2_per_cu_data *next_cu; | |
21940 | ||
21941 | next_cu = per_cu->cu->read_in_chain; | |
21942 | ||
dee91e82 | 21943 | if (per_cu == target_per_cu) |
ae038cb0 | 21944 | { |
68dc6402 | 21945 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 21946 | per_cu->cu = NULL; |
ae038cb0 DJ |
21947 | *last_chain = next_cu; |
21948 | break; | |
21949 | } | |
21950 | else | |
21951 | last_chain = &per_cu->cu->read_in_chain; | |
21952 | ||
21953 | per_cu = next_cu; | |
21954 | } | |
21955 | } | |
21956 | ||
fe3e1990 DJ |
21957 | /* Release all extra memory associated with OBJFILE. */ |
21958 | ||
21959 | void | |
21960 | dwarf2_free_objfile (struct objfile *objfile) | |
21961 | { | |
21962 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
21963 | ||
21964 | if (dwarf2_per_objfile == NULL) | |
21965 | return; | |
21966 | ||
21967 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
21968 | free_cached_comp_units (NULL); | |
21969 | ||
7b9f3c50 DE |
21970 | if (dwarf2_per_objfile->quick_file_names_table) |
21971 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 21972 | |
527f3840 JK |
21973 | if (dwarf2_per_objfile->line_header_hash) |
21974 | htab_delete (dwarf2_per_objfile->line_header_hash); | |
21975 | ||
fe3e1990 DJ |
21976 | /* Everything else should be on the objfile obstack. */ |
21977 | } | |
21978 | ||
dee91e82 DE |
21979 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
21980 | We store these in a hash table separate from the DIEs, and preserve them | |
21981 | when the DIEs are flushed out of cache. | |
21982 | ||
21983 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 21984 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
21985 | or the type may come from a DWO file. Furthermore, while it's more logical |
21986 | to use per_cu->section+offset, with Fission the section with the data is in | |
21987 | the DWO file but we don't know that section at the point we need it. | |
21988 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
21989 | because we can enter the lookup routine, get_die_type_at_offset, from | |
21990 | outside this file, and thus won't necessarily have PER_CU->cu. | |
21991 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 21992 | |
dee91e82 | 21993 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 21994 | { |
dee91e82 | 21995 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 21996 | sect_offset offset; |
1c379e20 DJ |
21997 | struct type *type; |
21998 | }; | |
21999 | ||
dee91e82 | 22000 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22001 | |
22002 | static hashval_t | |
dee91e82 | 22003 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 22004 | { |
dee91e82 | 22005 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 22006 | |
dee91e82 | 22007 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
22008 | } |
22009 | ||
dee91e82 | 22010 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22011 | |
22012 | static int | |
dee91e82 | 22013 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 22014 | { |
dee91e82 DE |
22015 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
22016 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 22017 | |
dee91e82 DE |
22018 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
22019 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
22020 | } |
22021 | ||
22022 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
22023 | table if necessary. For convenience, return TYPE. |
22024 | ||
22025 | The DIEs reading must have careful ordering to: | |
22026 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
22027 | reading current DIE. | |
22028 | * Not trying to dereference contents of still incompletely read in types | |
22029 | while reading in other DIEs. | |
22030 | * Enable referencing still incompletely read in types just by a pointer to | |
22031 | the type without accessing its fields. | |
22032 | ||
22033 | Therefore caller should follow these rules: | |
22034 | * Try to fetch any prerequisite types we may need to build this DIE type | |
22035 | before building the type and calling set_die_type. | |
e71ec853 | 22036 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
22037 | possible before fetching more types to complete the current type. |
22038 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 22039 | |
f792889a | 22040 | static struct type * |
1c379e20 DJ |
22041 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
22042 | { | |
dee91e82 | 22043 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 22044 | struct objfile *objfile = cu->objfile; |
3cdcd0ce JB |
22045 | struct attribute *attr; |
22046 | struct dynamic_prop prop; | |
1c379e20 | 22047 | |
b4ba55a1 JB |
22048 | /* For Ada types, make sure that the gnat-specific data is always |
22049 | initialized (if not already set). There are a few types where | |
22050 | we should not be doing so, because the type-specific area is | |
22051 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
22052 | where the type-specific area is used to store the floatformat). | |
22053 | But this is not a problem, because the gnat-specific information | |
22054 | is actually not needed for these types. */ | |
22055 | if (need_gnat_info (cu) | |
22056 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
22057 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
22058 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
22059 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
22060 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
22061 | && !HAVE_GNAT_AUX_INFO (type)) |
22062 | INIT_GNAT_SPECIFIC (type); | |
22063 | ||
3cdcd0ce JB |
22064 | /* Read DW_AT_data_location and set in type. */ |
22065 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
22066 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
22067 | { | |
22068 | TYPE_DATA_LOCATION (type) | |
22069 | = obstack_alloc (&objfile->objfile_obstack, sizeof (prop)); | |
22070 | *TYPE_DATA_LOCATION (type) = prop; | |
22071 | } | |
22072 | ||
dee91e82 | 22073 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22074 | { |
dee91e82 DE |
22075 | dwarf2_per_objfile->die_type_hash = |
22076 | htab_create_alloc_ex (127, | |
22077 | per_cu_offset_and_type_hash, | |
22078 | per_cu_offset_and_type_eq, | |
22079 | NULL, | |
22080 | &objfile->objfile_obstack, | |
22081 | hashtab_obstack_allocate, | |
22082 | dummy_obstack_deallocate); | |
f792889a | 22083 | } |
1c379e20 | 22084 | |
dee91e82 | 22085 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
22086 | ofs.offset = die->offset; |
22087 | ofs.type = type; | |
dee91e82 DE |
22088 | slot = (struct dwarf2_per_cu_offset_and_type **) |
22089 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
22090 | if (*slot) |
22091 | complaint (&symfile_complaints, | |
22092 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 22093 | die->offset.sect_off); |
673bfd45 | 22094 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 22095 | **slot = ofs; |
f792889a | 22096 | return type; |
1c379e20 DJ |
22097 | } |
22098 | ||
02142a6c DE |
22099 | /* Look up the type for the die at OFFSET in PER_CU in die_type_hash, |
22100 | or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
22101 | |
22102 | static struct type * | |
b64f50a1 | 22103 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 22104 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 22105 | { |
dee91e82 | 22106 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 22107 | |
dee91e82 | 22108 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22109 | return NULL; |
1c379e20 | 22110 | |
dee91e82 | 22111 | ofs.per_cu = per_cu; |
673bfd45 | 22112 | ofs.offset = offset; |
dee91e82 | 22113 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
22114 | if (slot) |
22115 | return slot->type; | |
22116 | else | |
22117 | return NULL; | |
22118 | } | |
22119 | ||
02142a6c | 22120 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
22121 | or return NULL if DIE does not have a saved type. */ |
22122 | ||
22123 | static struct type * | |
22124 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
22125 | { | |
22126 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
22127 | } | |
22128 | ||
10b3939b DJ |
22129 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
22130 | ||
22131 | static void | |
22132 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
22133 | struct dwarf2_per_cu_data *ref_per_cu) | |
22134 | { | |
22135 | void **slot; | |
22136 | ||
22137 | if (cu->dependencies == NULL) | |
22138 | cu->dependencies | |
22139 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
22140 | NULL, &cu->comp_unit_obstack, | |
22141 | hashtab_obstack_allocate, | |
22142 | dummy_obstack_deallocate); | |
22143 | ||
22144 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
22145 | if (*slot == NULL) | |
22146 | *slot = ref_per_cu; | |
22147 | } | |
1c379e20 | 22148 | |
f504f079 DE |
22149 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
22150 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
22151 | cache that we must keep because we are keeping CU. */ |
22152 | ||
10b3939b DJ |
22153 | static int |
22154 | dwarf2_mark_helper (void **slot, void *data) | |
22155 | { | |
22156 | struct dwarf2_per_cu_data *per_cu; | |
22157 | ||
22158 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
22159 | |
22160 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
22161 | reading of the chain. As such dependencies remain valid it is not much | |
22162 | useful to track and undo them during QUIT cleanups. */ | |
22163 | if (per_cu->cu == NULL) | |
22164 | return 1; | |
22165 | ||
10b3939b DJ |
22166 | if (per_cu->cu->mark) |
22167 | return 1; | |
22168 | per_cu->cu->mark = 1; | |
22169 | ||
22170 | if (per_cu->cu->dependencies != NULL) | |
22171 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
22172 | ||
22173 | return 1; | |
22174 | } | |
22175 | ||
f504f079 DE |
22176 | /* Set the mark field in CU and in every other compilation unit in the |
22177 | cache that we must keep because we are keeping CU. */ | |
22178 | ||
ae038cb0 DJ |
22179 | static void |
22180 | dwarf2_mark (struct dwarf2_cu *cu) | |
22181 | { | |
22182 | if (cu->mark) | |
22183 | return; | |
22184 | cu->mark = 1; | |
10b3939b DJ |
22185 | if (cu->dependencies != NULL) |
22186 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
22187 | } |
22188 | ||
22189 | static void | |
22190 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
22191 | { | |
22192 | while (per_cu) | |
22193 | { | |
22194 | per_cu->cu->mark = 0; | |
22195 | per_cu = per_cu->cu->read_in_chain; | |
22196 | } | |
72bf9492 DJ |
22197 | } |
22198 | ||
72bf9492 DJ |
22199 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
22200 | is its offset in .debug_info for this objfile. */ | |
22201 | ||
22202 | static hashval_t | |
22203 | partial_die_hash (const void *item) | |
22204 | { | |
22205 | const struct partial_die_info *part_die = item; | |
9a619af0 | 22206 | |
b64f50a1 | 22207 | return part_die->offset.sect_off; |
72bf9492 DJ |
22208 | } |
22209 | ||
22210 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
22211 | are equal if they have the same offset. */ | |
22212 | ||
22213 | static int | |
22214 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
22215 | { | |
22216 | const struct partial_die_info *part_die_lhs = item_lhs; | |
22217 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 22218 | |
b64f50a1 | 22219 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
22220 | } |
22221 | ||
ae038cb0 DJ |
22222 | static struct cmd_list_element *set_dwarf2_cmdlist; |
22223 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
22224 | ||
22225 | static void | |
22226 | set_dwarf2_cmd (char *args, int from_tty) | |
22227 | { | |
635c7e8a TT |
22228 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", all_commands, |
22229 | gdb_stdout); | |
ae038cb0 DJ |
22230 | } |
22231 | ||
22232 | static void | |
22233 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 22234 | { |
ae038cb0 DJ |
22235 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
22236 | } | |
22237 | ||
4bf44c1c | 22238 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
22239 | |
22240 | static void | |
c1bd65d0 | 22241 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
22242 | { |
22243 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 22244 | int ix; |
8b70b953 | 22245 | |
626f2d1c TT |
22246 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
22247 | cleaning up. */ | |
22248 | dwarf2_per_objfile = NULL; | |
22249 | ||
59b0c7c1 JB |
22250 | for (ix = 0; ix < data->n_comp_units; ++ix) |
22251 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 22252 | |
59b0c7c1 | 22253 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 22254 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
22255 | data->all_type_units[ix]->per_cu.imported_symtabs); |
22256 | xfree (data->all_type_units); | |
95554aad | 22257 | |
8b70b953 | 22258 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
22259 | |
22260 | if (data->dwo_files) | |
22261 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
22262 | if (data->dwp_file) |
22263 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
22264 | |
22265 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
22266 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
22267 | } |
22268 | ||
22269 | \f | |
ae2de4f8 | 22270 | /* The "save gdb-index" command. */ |
9291a0cd TT |
22271 | |
22272 | /* The contents of the hash table we create when building the string | |
22273 | table. */ | |
22274 | struct strtab_entry | |
22275 | { | |
22276 | offset_type offset; | |
22277 | const char *str; | |
22278 | }; | |
22279 | ||
559a7a62 JK |
22280 | /* Hash function for a strtab_entry. |
22281 | ||
22282 | Function is used only during write_hash_table so no index format backward | |
22283 | compatibility is needed. */ | |
b89be57b | 22284 | |
9291a0cd TT |
22285 | static hashval_t |
22286 | hash_strtab_entry (const void *e) | |
22287 | { | |
22288 | const struct strtab_entry *entry = e; | |
559a7a62 | 22289 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
22290 | } |
22291 | ||
22292 | /* Equality function for a strtab_entry. */ | |
b89be57b | 22293 | |
9291a0cd TT |
22294 | static int |
22295 | eq_strtab_entry (const void *a, const void *b) | |
22296 | { | |
22297 | const struct strtab_entry *ea = a; | |
22298 | const struct strtab_entry *eb = b; | |
22299 | return !strcmp (ea->str, eb->str); | |
22300 | } | |
22301 | ||
22302 | /* Create a strtab_entry hash table. */ | |
b89be57b | 22303 | |
9291a0cd TT |
22304 | static htab_t |
22305 | create_strtab (void) | |
22306 | { | |
22307 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
22308 | xfree, xcalloc, xfree); | |
22309 | } | |
22310 | ||
22311 | /* Add a string to the constant pool. Return the string's offset in | |
22312 | host order. */ | |
b89be57b | 22313 | |
9291a0cd TT |
22314 | static offset_type |
22315 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
22316 | { | |
22317 | void **slot; | |
22318 | struct strtab_entry entry; | |
22319 | struct strtab_entry *result; | |
22320 | ||
22321 | entry.str = str; | |
22322 | slot = htab_find_slot (table, &entry, INSERT); | |
22323 | if (*slot) | |
22324 | result = *slot; | |
22325 | else | |
22326 | { | |
22327 | result = XNEW (struct strtab_entry); | |
22328 | result->offset = obstack_object_size (cpool); | |
22329 | result->str = str; | |
22330 | obstack_grow_str0 (cpool, str); | |
22331 | *slot = result; | |
22332 | } | |
22333 | return result->offset; | |
22334 | } | |
22335 | ||
22336 | /* An entry in the symbol table. */ | |
22337 | struct symtab_index_entry | |
22338 | { | |
22339 | /* The name of the symbol. */ | |
22340 | const char *name; | |
22341 | /* The offset of the name in the constant pool. */ | |
22342 | offset_type index_offset; | |
22343 | /* A sorted vector of the indices of all the CUs that hold an object | |
22344 | of this name. */ | |
22345 | VEC (offset_type) *cu_indices; | |
22346 | }; | |
22347 | ||
22348 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
22349 | struct mapped_symtab | |
22350 | { | |
22351 | offset_type n_elements; | |
22352 | offset_type size; | |
22353 | struct symtab_index_entry **data; | |
22354 | }; | |
22355 | ||
22356 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 22357 | |
9291a0cd TT |
22358 | static hashval_t |
22359 | hash_symtab_entry (const void *e) | |
22360 | { | |
22361 | const struct symtab_index_entry *entry = e; | |
22362 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
22363 | sizeof (offset_type) * VEC_length (offset_type, | |
22364 | entry->cu_indices), | |
22365 | 0); | |
22366 | } | |
22367 | ||
22368 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 22369 | |
9291a0cd TT |
22370 | static int |
22371 | eq_symtab_entry (const void *a, const void *b) | |
22372 | { | |
22373 | const struct symtab_index_entry *ea = a; | |
22374 | const struct symtab_index_entry *eb = b; | |
22375 | int len = VEC_length (offset_type, ea->cu_indices); | |
22376 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
22377 | return 0; | |
22378 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
22379 | VEC_address (offset_type, eb->cu_indices), | |
22380 | sizeof (offset_type) * len); | |
22381 | } | |
22382 | ||
22383 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 22384 | |
9291a0cd TT |
22385 | static void |
22386 | delete_symtab_entry (void *p) | |
22387 | { | |
22388 | struct symtab_index_entry *entry = p; | |
22389 | VEC_free (offset_type, entry->cu_indices); | |
22390 | xfree (entry); | |
22391 | } | |
22392 | ||
22393 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 22394 | |
9291a0cd | 22395 | static htab_t |
3876f04e | 22396 | create_symbol_hash_table (void) |
9291a0cd TT |
22397 | { |
22398 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
22399 | delete_symtab_entry, xcalloc, xfree); | |
22400 | } | |
22401 | ||
22402 | /* Create a new mapped symtab object. */ | |
b89be57b | 22403 | |
9291a0cd TT |
22404 | static struct mapped_symtab * |
22405 | create_mapped_symtab (void) | |
22406 | { | |
22407 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
22408 | symtab->n_elements = 0; | |
22409 | symtab->size = 1024; | |
22410 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
22411 | return symtab; | |
22412 | } | |
22413 | ||
22414 | /* Destroy a mapped_symtab. */ | |
b89be57b | 22415 | |
9291a0cd TT |
22416 | static void |
22417 | cleanup_mapped_symtab (void *p) | |
22418 | { | |
22419 | struct mapped_symtab *symtab = p; | |
22420 | /* The contents of the array are freed when the other hash table is | |
22421 | destroyed. */ | |
22422 | xfree (symtab->data); | |
22423 | xfree (symtab); | |
22424 | } | |
22425 | ||
22426 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
22427 | the slot. |
22428 | ||
22429 | Function is used only during write_hash_table so no index format backward | |
22430 | compatibility is needed. */ | |
b89be57b | 22431 | |
9291a0cd TT |
22432 | static struct symtab_index_entry ** |
22433 | find_slot (struct mapped_symtab *symtab, const char *name) | |
22434 | { | |
559a7a62 | 22435 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
22436 | |
22437 | index = hash & (symtab->size - 1); | |
22438 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
22439 | ||
22440 | for (;;) | |
22441 | { | |
22442 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
22443 | return &symtab->data[index]; | |
22444 | index = (index + step) & (symtab->size - 1); | |
22445 | } | |
22446 | } | |
22447 | ||
22448 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 22449 | |
9291a0cd TT |
22450 | static void |
22451 | hash_expand (struct mapped_symtab *symtab) | |
22452 | { | |
22453 | offset_type old_size = symtab->size; | |
22454 | offset_type i; | |
22455 | struct symtab_index_entry **old_entries = symtab->data; | |
22456 | ||
22457 | symtab->size *= 2; | |
22458 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
22459 | ||
22460 | for (i = 0; i < old_size; ++i) | |
22461 | { | |
22462 | if (old_entries[i]) | |
22463 | { | |
22464 | struct symtab_index_entry **slot = find_slot (symtab, | |
22465 | old_entries[i]->name); | |
22466 | *slot = old_entries[i]; | |
22467 | } | |
22468 | } | |
22469 | ||
22470 | xfree (old_entries); | |
22471 | } | |
22472 | ||
156942c7 DE |
22473 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
22474 | CU_INDEX is the index of the CU in which the symbol appears. | |
22475 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 22476 | |
9291a0cd TT |
22477 | static void |
22478 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 22479 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
22480 | offset_type cu_index) |
22481 | { | |
22482 | struct symtab_index_entry **slot; | |
156942c7 | 22483 | offset_type cu_index_and_attrs; |
9291a0cd TT |
22484 | |
22485 | ++symtab->n_elements; | |
22486 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
22487 | hash_expand (symtab); | |
22488 | ||
22489 | slot = find_slot (symtab, name); | |
22490 | if (!*slot) | |
22491 | { | |
22492 | *slot = XNEW (struct symtab_index_entry); | |
22493 | (*slot)->name = name; | |
156942c7 | 22494 | /* index_offset is set later. */ |
9291a0cd TT |
22495 | (*slot)->cu_indices = NULL; |
22496 | } | |
156942c7 DE |
22497 | |
22498 | cu_index_and_attrs = 0; | |
22499 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
22500 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
22501 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
22502 | ||
22503 | /* We don't want to record an index value twice as we want to avoid the | |
22504 | duplication. | |
22505 | We process all global symbols and then all static symbols | |
22506 | (which would allow us to avoid the duplication by only having to check | |
22507 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
22508 | To keep things simple we don't worry about the duplication here and | |
22509 | sort and uniqufy the list after we've processed all symbols. */ | |
22510 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
22511 | } | |
22512 | ||
22513 | /* qsort helper routine for uniquify_cu_indices. */ | |
22514 | ||
22515 | static int | |
22516 | offset_type_compare (const void *ap, const void *bp) | |
22517 | { | |
22518 | offset_type a = *(offset_type *) ap; | |
22519 | offset_type b = *(offset_type *) bp; | |
22520 | ||
22521 | return (a > b) - (b > a); | |
22522 | } | |
22523 | ||
22524 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
22525 | ||
22526 | static void | |
22527 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
22528 | { | |
22529 | int i; | |
22530 | ||
22531 | for (i = 0; i < symtab->size; ++i) | |
22532 | { | |
22533 | struct symtab_index_entry *entry = symtab->data[i]; | |
22534 | ||
22535 | if (entry | |
22536 | && entry->cu_indices != NULL) | |
22537 | { | |
22538 | unsigned int next_to_insert, next_to_check; | |
22539 | offset_type last_value; | |
22540 | ||
22541 | qsort (VEC_address (offset_type, entry->cu_indices), | |
22542 | VEC_length (offset_type, entry->cu_indices), | |
22543 | sizeof (offset_type), offset_type_compare); | |
22544 | ||
22545 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
22546 | next_to_insert = 1; | |
22547 | for (next_to_check = 1; | |
22548 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
22549 | ++next_to_check) | |
22550 | { | |
22551 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
22552 | != last_value) | |
22553 | { | |
22554 | last_value = VEC_index (offset_type, entry->cu_indices, | |
22555 | next_to_check); | |
22556 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
22557 | last_value); | |
22558 | ++next_to_insert; | |
22559 | } | |
22560 | } | |
22561 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
22562 | } | |
22563 | } | |
9291a0cd TT |
22564 | } |
22565 | ||
22566 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 22567 | |
9291a0cd | 22568 | static offset_type |
3876f04e | 22569 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
22570 | struct symtab_index_entry *entry) |
22571 | { | |
22572 | void **slot; | |
22573 | ||
3876f04e | 22574 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
22575 | if (!*slot) |
22576 | { | |
22577 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
22578 | offset_type val = MAYBE_SWAP (len); | |
22579 | offset_type iter; | |
22580 | int i; | |
22581 | ||
22582 | *slot = entry; | |
22583 | entry->index_offset = obstack_object_size (cpool); | |
22584 | ||
22585 | obstack_grow (cpool, &val, sizeof (val)); | |
22586 | for (i = 0; | |
22587 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
22588 | ++i) | |
22589 | { | |
22590 | val = MAYBE_SWAP (iter); | |
22591 | obstack_grow (cpool, &val, sizeof (val)); | |
22592 | } | |
22593 | } | |
22594 | else | |
22595 | { | |
22596 | struct symtab_index_entry *old_entry = *slot; | |
22597 | entry->index_offset = old_entry->index_offset; | |
22598 | entry = old_entry; | |
22599 | } | |
22600 | return entry->index_offset; | |
22601 | } | |
22602 | ||
22603 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
22604 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 22605 | |
9291a0cd TT |
22606 | static void |
22607 | write_hash_table (struct mapped_symtab *symtab, | |
22608 | struct obstack *output, struct obstack *cpool) | |
22609 | { | |
22610 | offset_type i; | |
3876f04e | 22611 | htab_t symbol_hash_table; |
9291a0cd TT |
22612 | htab_t str_table; |
22613 | ||
3876f04e | 22614 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 22615 | str_table = create_strtab (); |
3876f04e | 22616 | |
9291a0cd TT |
22617 | /* We add all the index vectors to the constant pool first, to |
22618 | ensure alignment is ok. */ | |
22619 | for (i = 0; i < symtab->size; ++i) | |
22620 | { | |
22621 | if (symtab->data[i]) | |
3876f04e | 22622 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
22623 | } |
22624 | ||
22625 | /* Now write out the hash table. */ | |
22626 | for (i = 0; i < symtab->size; ++i) | |
22627 | { | |
22628 | offset_type str_off, vec_off; | |
22629 | ||
22630 | if (symtab->data[i]) | |
22631 | { | |
22632 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
22633 | vec_off = symtab->data[i]->index_offset; | |
22634 | } | |
22635 | else | |
22636 | { | |
22637 | /* While 0 is a valid constant pool index, it is not valid | |
22638 | to have 0 for both offsets. */ | |
22639 | str_off = 0; | |
22640 | vec_off = 0; | |
22641 | } | |
22642 | ||
22643 | str_off = MAYBE_SWAP (str_off); | |
22644 | vec_off = MAYBE_SWAP (vec_off); | |
22645 | ||
22646 | obstack_grow (output, &str_off, sizeof (str_off)); | |
22647 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
22648 | } | |
22649 | ||
22650 | htab_delete (str_table); | |
3876f04e | 22651 | htab_delete (symbol_hash_table); |
9291a0cd TT |
22652 | } |
22653 | ||
0a5429f6 DE |
22654 | /* Struct to map psymtab to CU index in the index file. */ |
22655 | struct psymtab_cu_index_map | |
22656 | { | |
22657 | struct partial_symtab *psymtab; | |
22658 | unsigned int cu_index; | |
22659 | }; | |
22660 | ||
22661 | static hashval_t | |
22662 | hash_psymtab_cu_index (const void *item) | |
22663 | { | |
22664 | const struct psymtab_cu_index_map *map = item; | |
22665 | ||
22666 | return htab_hash_pointer (map->psymtab); | |
22667 | } | |
22668 | ||
22669 | static int | |
22670 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
22671 | { | |
22672 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
22673 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
22674 | ||
22675 | return lhs->psymtab == rhs->psymtab; | |
22676 | } | |
22677 | ||
22678 | /* Helper struct for building the address table. */ | |
22679 | struct addrmap_index_data | |
22680 | { | |
22681 | struct objfile *objfile; | |
22682 | struct obstack *addr_obstack; | |
22683 | htab_t cu_index_htab; | |
22684 | ||
22685 | /* Non-zero if the previous_* fields are valid. | |
22686 | We can't write an entry until we see the next entry (since it is only then | |
22687 | that we know the end of the entry). */ | |
22688 | int previous_valid; | |
22689 | /* Index of the CU in the table of all CUs in the index file. */ | |
22690 | unsigned int previous_cu_index; | |
0963b4bd | 22691 | /* Start address of the CU. */ |
0a5429f6 DE |
22692 | CORE_ADDR previous_cu_start; |
22693 | }; | |
22694 | ||
22695 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 22696 | |
9291a0cd | 22697 | static void |
0a5429f6 DE |
22698 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
22699 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 22700 | { |
0a5429f6 | 22701 | offset_type cu_index_to_write; |
948f8e3d | 22702 | gdb_byte addr[8]; |
9291a0cd TT |
22703 | CORE_ADDR baseaddr; |
22704 | ||
22705 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
22706 | ||
0a5429f6 DE |
22707 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
22708 | obstack_grow (obstack, addr, 8); | |
22709 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
22710 | obstack_grow (obstack, addr, 8); | |
22711 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
22712 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
22713 | } | |
22714 | ||
22715 | /* Worker function for traversing an addrmap to build the address table. */ | |
22716 | ||
22717 | static int | |
22718 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
22719 | { | |
22720 | struct addrmap_index_data *data = datap; | |
22721 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
22722 | |
22723 | if (data->previous_valid) | |
22724 | add_address_entry (data->objfile, data->addr_obstack, | |
22725 | data->previous_cu_start, start_addr, | |
22726 | data->previous_cu_index); | |
22727 | ||
22728 | data->previous_cu_start = start_addr; | |
22729 | if (pst != NULL) | |
22730 | { | |
22731 | struct psymtab_cu_index_map find_map, *map; | |
22732 | find_map.psymtab = pst; | |
22733 | map = htab_find (data->cu_index_htab, &find_map); | |
22734 | gdb_assert (map != NULL); | |
22735 | data->previous_cu_index = map->cu_index; | |
22736 | data->previous_valid = 1; | |
22737 | } | |
22738 | else | |
22739 | data->previous_valid = 0; | |
22740 | ||
22741 | return 0; | |
22742 | } | |
22743 | ||
22744 | /* Write OBJFILE's address map to OBSTACK. | |
22745 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
22746 | in the index file. */ | |
22747 | ||
22748 | static void | |
22749 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
22750 | htab_t cu_index_htab) | |
22751 | { | |
22752 | struct addrmap_index_data addrmap_index_data; | |
22753 | ||
22754 | /* When writing the address table, we have to cope with the fact that | |
22755 | the addrmap iterator only provides the start of a region; we have to | |
22756 | wait until the next invocation to get the start of the next region. */ | |
22757 | ||
22758 | addrmap_index_data.objfile = objfile; | |
22759 | addrmap_index_data.addr_obstack = obstack; | |
22760 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
22761 | addrmap_index_data.previous_valid = 0; | |
22762 | ||
22763 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
22764 | &addrmap_index_data); | |
22765 | ||
22766 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
22767 | is valid, but we should still handle it. | |
22768 | The end address is recorded as the start of the next region, but that | |
22769 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
22770 | anyway. */ | |
22771 | if (addrmap_index_data.previous_valid) | |
22772 | add_address_entry (objfile, obstack, | |
22773 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
22774 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
22775 | } |
22776 | ||
156942c7 DE |
22777 | /* Return the symbol kind of PSYM. */ |
22778 | ||
22779 | static gdb_index_symbol_kind | |
22780 | symbol_kind (struct partial_symbol *psym) | |
22781 | { | |
22782 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
22783 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
22784 | ||
22785 | switch (domain) | |
22786 | { | |
22787 | case VAR_DOMAIN: | |
22788 | switch (aclass) | |
22789 | { | |
22790 | case LOC_BLOCK: | |
22791 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
22792 | case LOC_TYPEDEF: | |
22793 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
22794 | case LOC_COMPUTED: | |
22795 | case LOC_CONST_BYTES: | |
22796 | case LOC_OPTIMIZED_OUT: | |
22797 | case LOC_STATIC: | |
22798 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
22799 | case LOC_CONST: | |
22800 | /* Note: It's currently impossible to recognize psyms as enum values | |
22801 | short of reading the type info. For now punt. */ | |
22802 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
22803 | default: | |
22804 | /* There are other LOC_FOO values that one might want to classify | |
22805 | as variables, but dwarf2read.c doesn't currently use them. */ | |
22806 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
22807 | } | |
22808 | case STRUCT_DOMAIN: | |
22809 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
22810 | default: | |
22811 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
22812 | } | |
22813 | } | |
22814 | ||
9291a0cd | 22815 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 22816 | |
9291a0cd TT |
22817 | static void |
22818 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 22819 | htab_t psyms_seen, |
9291a0cd TT |
22820 | struct partial_symbol **psymp, |
22821 | int count, | |
987d643c TT |
22822 | offset_type cu_index, |
22823 | int is_static) | |
9291a0cd TT |
22824 | { |
22825 | for (; count-- > 0; ++psymp) | |
22826 | { | |
156942c7 DE |
22827 | struct partial_symbol *psym = *psymp; |
22828 | void **slot; | |
987d643c | 22829 | |
156942c7 | 22830 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 22831 | error (_("Ada is not currently supported by the index")); |
987d643c | 22832 | |
987d643c | 22833 | /* Only add a given psymbol once. */ |
156942c7 | 22834 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
22835 | if (!*slot) |
22836 | { | |
156942c7 DE |
22837 | gdb_index_symbol_kind kind = symbol_kind (psym); |
22838 | ||
22839 | *slot = psym; | |
22840 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
22841 | is_static, kind, cu_index); | |
987d643c | 22842 | } |
9291a0cd TT |
22843 | } |
22844 | } | |
22845 | ||
22846 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
22847 | exception if there is an error. */ | |
b89be57b | 22848 | |
9291a0cd TT |
22849 | static void |
22850 | write_obstack (FILE *file, struct obstack *obstack) | |
22851 | { | |
22852 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
22853 | file) | |
22854 | != obstack_object_size (obstack)) | |
22855 | error (_("couldn't data write to file")); | |
22856 | } | |
22857 | ||
22858 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 22859 | |
9291a0cd TT |
22860 | static void |
22861 | unlink_if_set (void *p) | |
22862 | { | |
22863 | char **filename = p; | |
22864 | if (*filename) | |
22865 | unlink (*filename); | |
22866 | } | |
22867 | ||
1fd400ff TT |
22868 | /* A helper struct used when iterating over debug_types. */ |
22869 | struct signatured_type_index_data | |
22870 | { | |
22871 | struct objfile *objfile; | |
22872 | struct mapped_symtab *symtab; | |
22873 | struct obstack *types_list; | |
987d643c | 22874 | htab_t psyms_seen; |
1fd400ff TT |
22875 | int cu_index; |
22876 | }; | |
22877 | ||
22878 | /* A helper function that writes a single signatured_type to an | |
22879 | obstack. */ | |
b89be57b | 22880 | |
1fd400ff TT |
22881 | static int |
22882 | write_one_signatured_type (void **slot, void *d) | |
22883 | { | |
22884 | struct signatured_type_index_data *info = d; | |
22885 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
0186c6a7 | 22886 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
22887 | gdb_byte val[8]; |
22888 | ||
22889 | write_psymbols (info->symtab, | |
987d643c | 22890 | info->psyms_seen, |
3e43a32a MS |
22891 | info->objfile->global_psymbols.list |
22892 | + psymtab->globals_offset, | |
987d643c TT |
22893 | psymtab->n_global_syms, info->cu_index, |
22894 | 0); | |
1fd400ff | 22895 | write_psymbols (info->symtab, |
987d643c | 22896 | info->psyms_seen, |
3e43a32a MS |
22897 | info->objfile->static_psymbols.list |
22898 | + psymtab->statics_offset, | |
987d643c TT |
22899 | psymtab->n_static_syms, info->cu_index, |
22900 | 1); | |
1fd400ff | 22901 | |
b64f50a1 JK |
22902 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22903 | entry->per_cu.offset.sect_off); | |
1fd400ff | 22904 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
22905 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22906 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
22907 | obstack_grow (info->types_list, val, 8); |
22908 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
22909 | obstack_grow (info->types_list, val, 8); | |
22910 | ||
22911 | ++info->cu_index; | |
22912 | ||
22913 | return 1; | |
22914 | } | |
22915 | ||
95554aad TT |
22916 | /* Recurse into all "included" dependencies and write their symbols as |
22917 | if they appeared in this psymtab. */ | |
22918 | ||
22919 | static void | |
22920 | recursively_write_psymbols (struct objfile *objfile, | |
22921 | struct partial_symtab *psymtab, | |
22922 | struct mapped_symtab *symtab, | |
22923 | htab_t psyms_seen, | |
22924 | offset_type cu_index) | |
22925 | { | |
22926 | int i; | |
22927 | ||
22928 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
22929 | if (psymtab->dependencies[i]->user != NULL) | |
22930 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
22931 | symtab, psyms_seen, cu_index); | |
22932 | ||
22933 | write_psymbols (symtab, | |
22934 | psyms_seen, | |
22935 | objfile->global_psymbols.list + psymtab->globals_offset, | |
22936 | psymtab->n_global_syms, cu_index, | |
22937 | 0); | |
22938 | write_psymbols (symtab, | |
22939 | psyms_seen, | |
22940 | objfile->static_psymbols.list + psymtab->statics_offset, | |
22941 | psymtab->n_static_syms, cu_index, | |
22942 | 1); | |
22943 | } | |
22944 | ||
9291a0cd | 22945 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 22946 | |
9291a0cd TT |
22947 | static void |
22948 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
22949 | { | |
22950 | struct cleanup *cleanup; | |
22951 | char *filename, *cleanup_filename; | |
1fd400ff TT |
22952 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
22953 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
22954 | int i; |
22955 | FILE *out_file; | |
22956 | struct mapped_symtab *symtab; | |
22957 | offset_type val, size_of_contents, total_len; | |
22958 | struct stat st; | |
987d643c | 22959 | htab_t psyms_seen; |
0a5429f6 DE |
22960 | htab_t cu_index_htab; |
22961 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 22962 | |
9291a0cd TT |
22963 | if (dwarf2_per_objfile->using_index) |
22964 | error (_("Cannot use an index to create the index")); | |
22965 | ||
8b70b953 TT |
22966 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
22967 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
22968 | ||
260b681b DE |
22969 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
22970 | return; | |
22971 | ||
4262abfb JK |
22972 | if (stat (objfile_name (objfile), &st) < 0) |
22973 | perror_with_name (objfile_name (objfile)); | |
9291a0cd | 22974 | |
4262abfb | 22975 | filename = concat (dir, SLASH_STRING, lbasename (objfile_name (objfile)), |
9291a0cd TT |
22976 | INDEX_SUFFIX, (char *) NULL); |
22977 | cleanup = make_cleanup (xfree, filename); | |
22978 | ||
614c279d | 22979 | out_file = gdb_fopen_cloexec (filename, "wb"); |
9291a0cd TT |
22980 | if (!out_file) |
22981 | error (_("Can't open `%s' for writing"), filename); | |
22982 | ||
22983 | cleanup_filename = filename; | |
22984 | make_cleanup (unlink_if_set, &cleanup_filename); | |
22985 | ||
22986 | symtab = create_mapped_symtab (); | |
22987 | make_cleanup (cleanup_mapped_symtab, symtab); | |
22988 | ||
22989 | obstack_init (&addr_obstack); | |
22990 | make_cleanup_obstack_free (&addr_obstack); | |
22991 | ||
22992 | obstack_init (&cu_list); | |
22993 | make_cleanup_obstack_free (&cu_list); | |
22994 | ||
1fd400ff TT |
22995 | obstack_init (&types_cu_list); |
22996 | make_cleanup_obstack_free (&types_cu_list); | |
22997 | ||
987d643c TT |
22998 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
22999 | NULL, xcalloc, xfree); | |
96408a79 | 23000 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 23001 | |
0a5429f6 DE |
23002 | /* While we're scanning CU's create a table that maps a psymtab pointer |
23003 | (which is what addrmap records) to its index (which is what is recorded | |
23004 | in the index file). This will later be needed to write the address | |
23005 | table. */ | |
23006 | cu_index_htab = htab_create_alloc (100, | |
23007 | hash_psymtab_cu_index, | |
23008 | eq_psymtab_cu_index, | |
23009 | NULL, xcalloc, xfree); | |
96408a79 | 23010 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
23011 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
23012 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
23013 | * dwarf2_per_objfile->n_comp_units); | |
23014 | make_cleanup (xfree, psymtab_cu_index_map); | |
23015 | ||
23016 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
23017 | work here. Also, the debug_types entries do not appear in |
23018 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
23019 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
23020 | { | |
3e43a32a MS |
23021 | struct dwarf2_per_cu_data *per_cu |
23022 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 23023 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 23024 | gdb_byte val[8]; |
0a5429f6 DE |
23025 | struct psymtab_cu_index_map *map; |
23026 | void **slot; | |
9291a0cd | 23027 | |
92fac807 JK |
23028 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
23029 | It may be referenced from a local scope but in such case it does not | |
23030 | need to be present in .gdb_index. */ | |
23031 | if (psymtab == NULL) | |
23032 | continue; | |
23033 | ||
95554aad TT |
23034 | if (psymtab->user == NULL) |
23035 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 23036 | |
0a5429f6 DE |
23037 | map = &psymtab_cu_index_map[i]; |
23038 | map->psymtab = psymtab; | |
23039 | map->cu_index = i; | |
23040 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
23041 | gdb_assert (slot != NULL); | |
23042 | gdb_assert (*slot == NULL); | |
23043 | *slot = map; | |
9291a0cd | 23044 | |
b64f50a1 JK |
23045 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23046 | per_cu->offset.sect_off); | |
9291a0cd | 23047 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 23048 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
23049 | obstack_grow (&cu_list, val, 8); |
23050 | } | |
23051 | ||
0a5429f6 DE |
23052 | /* Dump the address map. */ |
23053 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
23054 | ||
1fd400ff TT |
23055 | /* Write out the .debug_type entries, if any. */ |
23056 | if (dwarf2_per_objfile->signatured_types) | |
23057 | { | |
23058 | struct signatured_type_index_data sig_data; | |
23059 | ||
23060 | sig_data.objfile = objfile; | |
23061 | sig_data.symtab = symtab; | |
23062 | sig_data.types_list = &types_cu_list; | |
987d643c | 23063 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
23064 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
23065 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
23066 | write_one_signatured_type, &sig_data); | |
23067 | } | |
23068 | ||
156942c7 DE |
23069 | /* Now that we've processed all symbols we can shrink their cu_indices |
23070 | lists. */ | |
23071 | uniquify_cu_indices (symtab); | |
23072 | ||
9291a0cd TT |
23073 | obstack_init (&constant_pool); |
23074 | make_cleanup_obstack_free (&constant_pool); | |
23075 | obstack_init (&symtab_obstack); | |
23076 | make_cleanup_obstack_free (&symtab_obstack); | |
23077 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
23078 | ||
23079 | obstack_init (&contents); | |
23080 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 23081 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
23082 | total_len = size_of_contents; |
23083 | ||
23084 | /* The version number. */ | |
796a7ff8 | 23085 | val = MAYBE_SWAP (8); |
9291a0cd TT |
23086 | obstack_grow (&contents, &val, sizeof (val)); |
23087 | ||
23088 | /* The offset of the CU list from the start of the file. */ | |
23089 | val = MAYBE_SWAP (total_len); | |
23090 | obstack_grow (&contents, &val, sizeof (val)); | |
23091 | total_len += obstack_object_size (&cu_list); | |
23092 | ||
1fd400ff TT |
23093 | /* The offset of the types CU list from the start of the file. */ |
23094 | val = MAYBE_SWAP (total_len); | |
23095 | obstack_grow (&contents, &val, sizeof (val)); | |
23096 | total_len += obstack_object_size (&types_cu_list); | |
23097 | ||
9291a0cd TT |
23098 | /* The offset of the address table from the start of the file. */ |
23099 | val = MAYBE_SWAP (total_len); | |
23100 | obstack_grow (&contents, &val, sizeof (val)); | |
23101 | total_len += obstack_object_size (&addr_obstack); | |
23102 | ||
23103 | /* The offset of the symbol table from the start of the file. */ | |
23104 | val = MAYBE_SWAP (total_len); | |
23105 | obstack_grow (&contents, &val, sizeof (val)); | |
23106 | total_len += obstack_object_size (&symtab_obstack); | |
23107 | ||
23108 | /* The offset of the constant pool from the start of the file. */ | |
23109 | val = MAYBE_SWAP (total_len); | |
23110 | obstack_grow (&contents, &val, sizeof (val)); | |
23111 | total_len += obstack_object_size (&constant_pool); | |
23112 | ||
23113 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
23114 | ||
23115 | write_obstack (out_file, &contents); | |
23116 | write_obstack (out_file, &cu_list); | |
1fd400ff | 23117 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
23118 | write_obstack (out_file, &addr_obstack); |
23119 | write_obstack (out_file, &symtab_obstack); | |
23120 | write_obstack (out_file, &constant_pool); | |
23121 | ||
23122 | fclose (out_file); | |
23123 | ||
23124 | /* We want to keep the file, so we set cleanup_filename to NULL | |
23125 | here. See unlink_if_set. */ | |
23126 | cleanup_filename = NULL; | |
23127 | ||
23128 | do_cleanups (cleanup); | |
23129 | } | |
23130 | ||
90476074 TT |
23131 | /* Implementation of the `save gdb-index' command. |
23132 | ||
23133 | Note that the file format used by this command is documented in the | |
23134 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 23135 | |
9291a0cd TT |
23136 | static void |
23137 | save_gdb_index_command (char *arg, int from_tty) | |
23138 | { | |
23139 | struct objfile *objfile; | |
23140 | ||
23141 | if (!arg || !*arg) | |
96d19272 | 23142 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
23143 | |
23144 | ALL_OBJFILES (objfile) | |
23145 | { | |
23146 | struct stat st; | |
23147 | ||
23148 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 23149 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
23150 | continue; |
23151 | ||
23152 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
23153 | if (dwarf2_per_objfile) | |
23154 | { | |
23155 | volatile struct gdb_exception except; | |
23156 | ||
23157 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
23158 | { | |
23159 | write_psymtabs_to_index (objfile, arg); | |
23160 | } | |
23161 | if (except.reason < 0) | |
23162 | exception_fprintf (gdb_stderr, except, | |
23163 | _("Error while writing index for `%s': "), | |
4262abfb | 23164 | objfile_name (objfile)); |
9291a0cd TT |
23165 | } |
23166 | } | |
dce234bc PP |
23167 | } |
23168 | ||
9291a0cd TT |
23169 | \f |
23170 | ||
9eae7c52 TT |
23171 | int dwarf2_always_disassemble; |
23172 | ||
23173 | static void | |
23174 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
23175 | struct cmd_list_element *c, const char *value) | |
23176 | { | |
3e43a32a MS |
23177 | fprintf_filtered (file, |
23178 | _("Whether to always disassemble " | |
23179 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
23180 | value); |
23181 | } | |
23182 | ||
900e11f9 JK |
23183 | static void |
23184 | show_check_physname (struct ui_file *file, int from_tty, | |
23185 | struct cmd_list_element *c, const char *value) | |
23186 | { | |
23187 | fprintf_filtered (file, | |
23188 | _("Whether to check \"physname\" is %s.\n"), | |
23189 | value); | |
23190 | } | |
23191 | ||
6502dd73 DJ |
23192 | void _initialize_dwarf2_read (void); |
23193 | ||
23194 | void | |
23195 | _initialize_dwarf2_read (void) | |
23196 | { | |
96d19272 JK |
23197 | struct cmd_list_element *c; |
23198 | ||
dce234bc | 23199 | dwarf2_objfile_data_key |
c1bd65d0 | 23200 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 23201 | |
1bedd215 AC |
23202 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
23203 | Set DWARF 2 specific variables.\n\ | |
23204 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
23205 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
23206 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
23207 | ||
1bedd215 AC |
23208 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
23209 | Show DWARF 2 specific variables\n\ | |
23210 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
23211 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
23212 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
23213 | ||
23214 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
23215 | &dwarf2_max_cache_age, _("\ |
23216 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
23217 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
23218 | A higher limit means that cached compilation units will be stored\n\ | |
23219 | in memory longer, and more total memory will be used. Zero disables\n\ | |
23220 | caching, which can slow down startup."), | |
2c5b56ce | 23221 | NULL, |
920d2a44 | 23222 | show_dwarf2_max_cache_age, |
2c5b56ce | 23223 | &set_dwarf2_cmdlist, |
ae038cb0 | 23224 | &show_dwarf2_cmdlist); |
d97bc12b | 23225 | |
9eae7c52 TT |
23226 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
23227 | &dwarf2_always_disassemble, _("\ | |
23228 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
23229 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
23230 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
23231 | syntax. When disabled, expressions will be printed in a more\n\ | |
23232 | conversational style, when possible."), | |
23233 | NULL, | |
23234 | show_dwarf2_always_disassemble, | |
23235 | &set_dwarf2_cmdlist, | |
23236 | &show_dwarf2_cmdlist); | |
23237 | ||
73be47f5 | 23238 | add_setshow_zuinteger_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
45cfd468 DE |
23239 | Set debugging of the dwarf2 reader."), _("\ |
23240 | Show debugging of the dwarf2 reader."), _("\ | |
73be47f5 DE |
23241 | When enabled (non-zero), debugging messages are printed during dwarf2\n\ |
23242 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
23243 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
23244 | NULL, |
23245 | NULL, | |
23246 | &setdebuglist, &showdebuglist); | |
23247 | ||
ccce17b0 | 23248 | add_setshow_zuinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
d97bc12b DE |
23249 | Set debugging of the dwarf2 DIE reader."), _("\ |
23250 | Show debugging of the dwarf2 DIE reader."), _("\ | |
23251 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
23252 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
23253 | NULL, |
23254 | NULL, | |
23255 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23256 | |
900e11f9 JK |
23257 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
23258 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
23259 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
23260 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
23261 | the demangler."), | |
23262 | NULL, show_check_physname, | |
23263 | &setdebuglist, &showdebuglist); | |
23264 | ||
e615022a DE |
23265 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
23266 | no_class, &use_deprecated_index_sections, _("\ | |
23267 | Set whether to use deprecated gdb_index sections."), _("\ | |
23268 | Show whether to use deprecated gdb_index sections."), _("\ | |
23269 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
23270 | Normally they are ignored either because of a missing feature or\n\ | |
23271 | performance issue.\n\ | |
23272 | Warning: This option must be enabled before gdb reads the file."), | |
23273 | NULL, | |
23274 | NULL, | |
23275 | &setlist, &showlist); | |
23276 | ||
96d19272 | 23277 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 23278 | _("\ |
fc1a9d6e | 23279 | Save a gdb-index file.\n\ |
11570e71 | 23280 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
23281 | &save_cmdlist); |
23282 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
23283 | |
23284 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23285 | &dwarf2_locexpr_funcs); | |
23286 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23287 | &dwarf2_loclist_funcs); | |
23288 | ||
23289 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23290 | &dwarf2_block_frame_base_locexpr_funcs); | |
23291 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23292 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 23293 | } |