Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
61baf725 | 3 | Copyright (C) 1994-2017 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 | 55 | #include "typeprint.h" |
ccefe4c4 | 56 | #include "psympriv.h" |
53ce3c39 | 57 | #include <sys/stat.h> |
96d19272 | 58 | #include "completer.h" |
34eaf542 | 59 | #include "vec.h" |
98bfdba5 | 60 | #include "c-lang.h" |
a766d390 | 61 | #include "go-lang.h" |
98bfdba5 | 62 | #include "valprint.h" |
3019eac3 | 63 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 64 | #include "gdb/gdb-index.h" |
60d5a603 | 65 | #include <ctype.h> |
cbb099e8 | 66 | #include "gdb_bfd.h" |
4357ac6c | 67 | #include "f-lang.h" |
05cba821 | 68 | #include "source.h" |
614c279d | 69 | #include "filestuff.h" |
dc294be5 | 70 | #include "build-id.h" |
22cee43f | 71 | #include "namespace.h" |
bef155c3 | 72 | #include "common/gdb_unlinker.h" |
14bc53a8 | 73 | #include "common/function-view.h" |
4c2df51b | 74 | |
c906108c | 75 | #include <fcntl.h> |
c906108c | 76 | #include <sys/types.h> |
325fac50 | 77 | #include <algorithm> |
d8151005 | 78 | |
34eaf542 TT |
79 | typedef struct symbol *symbolp; |
80 | DEF_VEC_P (symbolp); | |
81 | ||
73be47f5 DE |
82 | /* When == 1, print basic high level tracing messages. |
83 | When > 1, be more verbose. | |
b4f54984 DE |
84 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
85 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 86 | |
d97bc12b | 87 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 88 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 89 | |
27e0867f DE |
90 | /* When non-zero, dump line number entries as they are read in. */ |
91 | static unsigned int dwarf_line_debug = 0; | |
92 | ||
900e11f9 JK |
93 | /* When non-zero, cross-check physname against demangler. */ |
94 | static int check_physname = 0; | |
95 | ||
481860b3 | 96 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 97 | static int use_deprecated_index_sections = 0; |
481860b3 | 98 | |
6502dd73 DJ |
99 | static const struct objfile_data *dwarf2_objfile_data_key; |
100 | ||
f1e6e072 TT |
101 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
102 | ||
103 | static int dwarf2_locexpr_index; | |
104 | static int dwarf2_loclist_index; | |
105 | static int dwarf2_locexpr_block_index; | |
106 | static int dwarf2_loclist_block_index; | |
107 | ||
73869dc2 DE |
108 | /* A descriptor for dwarf sections. |
109 | ||
110 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
111 | scanned. BUFFER, READIN are filled in later when the section is read. | |
112 | If the section contained compressed data then SIZE is updated to record | |
113 | the uncompressed size of the section. | |
114 | ||
115 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
116 | creating the concept of virtual sections contained within a real section. | |
117 | In DWP V2 the sections of the input DWO files are concatenated together | |
118 | into one section, but section offsets are kept relative to the original | |
119 | input section. | |
120 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
121 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
122 | describe the virtual section. */ | |
123 | ||
dce234bc PP |
124 | struct dwarf2_section_info |
125 | { | |
73869dc2 DE |
126 | union |
127 | { | |
e5aa3347 | 128 | /* If this is a real section, the bfd section. */ |
049412e3 | 129 | asection *section; |
73869dc2 | 130 | /* If this is a virtual section, pointer to the containing ("real") |
e5aa3347 | 131 | section. */ |
73869dc2 DE |
132 | struct dwarf2_section_info *containing_section; |
133 | } s; | |
19ac8c2e | 134 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 135 | const gdb_byte *buffer; |
73869dc2 | 136 | /* The size of the section, real or virtual. */ |
dce234bc | 137 | bfd_size_type size; |
73869dc2 DE |
138 | /* If this is a virtual section, the offset in the real section. |
139 | Only valid if is_virtual. */ | |
140 | bfd_size_type virtual_offset; | |
be391dca | 141 | /* True if we have tried to read this section. */ |
73869dc2 DE |
142 | char readin; |
143 | /* True if this is a virtual section, False otherwise. | |
049412e3 | 144 | This specifies which of s.section and s.containing_section to use. */ |
73869dc2 | 145 | char is_virtual; |
dce234bc PP |
146 | }; |
147 | ||
8b70b953 TT |
148 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
149 | DEF_VEC_O (dwarf2_section_info_def); | |
150 | ||
9291a0cd TT |
151 | /* All offsets in the index are of this type. It must be |
152 | architecture-independent. */ | |
153 | typedef uint32_t offset_type; | |
154 | ||
155 | DEF_VEC_I (offset_type); | |
156 | ||
156942c7 DE |
157 | /* Ensure only legit values are used. */ |
158 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
159 | do { \ | |
160 | gdb_assert ((unsigned int) (value) <= 1); \ | |
161 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
162 | } while (0) | |
163 | ||
164 | /* Ensure only legit values are used. */ | |
165 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
166 | do { \ | |
167 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
168 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
169 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
170 | } while (0) | |
171 | ||
172 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
173 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
174 | do { \ | |
175 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
176 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
177 | } while (0) | |
178 | ||
9291a0cd TT |
179 | /* A description of the mapped index. The file format is described in |
180 | a comment by the code that writes the index. */ | |
181 | struct mapped_index | |
182 | { | |
559a7a62 JK |
183 | /* Index data format version. */ |
184 | int version; | |
185 | ||
9291a0cd TT |
186 | /* The total length of the buffer. */ |
187 | off_t total_size; | |
b11b1f88 | 188 | |
9291a0cd TT |
189 | /* A pointer to the address table data. */ |
190 | const gdb_byte *address_table; | |
b11b1f88 | 191 | |
9291a0cd TT |
192 | /* Size of the address table data in bytes. */ |
193 | offset_type address_table_size; | |
b11b1f88 | 194 | |
3876f04e DE |
195 | /* The symbol table, implemented as a hash table. */ |
196 | const offset_type *symbol_table; | |
b11b1f88 | 197 | |
9291a0cd | 198 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 199 | offset_type symbol_table_slots; |
b11b1f88 | 200 | |
9291a0cd TT |
201 | /* A pointer to the constant pool. */ |
202 | const char *constant_pool; | |
203 | }; | |
204 | ||
95554aad TT |
205 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
206 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
207 | ||
52059ffd TT |
208 | struct tu_stats |
209 | { | |
210 | int nr_uniq_abbrev_tables; | |
211 | int nr_symtabs; | |
212 | int nr_symtab_sharers; | |
213 | int nr_stmt_less_type_units; | |
214 | int nr_all_type_units_reallocs; | |
215 | }; | |
216 | ||
9cdd5dbd DE |
217 | /* Collection of data recorded per objfile. |
218 | This hangs off of dwarf2_objfile_data_key. */ | |
219 | ||
6502dd73 DJ |
220 | struct dwarf2_per_objfile |
221 | { | |
dce234bc PP |
222 | struct dwarf2_section_info info; |
223 | struct dwarf2_section_info abbrev; | |
224 | struct dwarf2_section_info line; | |
dce234bc | 225 | struct dwarf2_section_info loc; |
43988095 | 226 | struct dwarf2_section_info loclists; |
dce234bc | 227 | struct dwarf2_section_info macinfo; |
cf2c3c16 | 228 | struct dwarf2_section_info macro; |
dce234bc | 229 | struct dwarf2_section_info str; |
43988095 | 230 | struct dwarf2_section_info line_str; |
dce234bc | 231 | struct dwarf2_section_info ranges; |
43988095 | 232 | struct dwarf2_section_info rnglists; |
3019eac3 | 233 | struct dwarf2_section_info addr; |
dce234bc PP |
234 | struct dwarf2_section_info frame; |
235 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 236 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 237 | |
8b70b953 TT |
238 | VEC (dwarf2_section_info_def) *types; |
239 | ||
be391dca TT |
240 | /* Back link. */ |
241 | struct objfile *objfile; | |
242 | ||
d467dd73 | 243 | /* Table of all the compilation units. This is used to locate |
10b3939b | 244 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
245 | struct dwarf2_per_cu_data **all_comp_units; |
246 | ||
247 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
248 | int n_comp_units; | |
249 | ||
1fd400ff | 250 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 251 | int n_type_units; |
1fd400ff | 252 | |
6aa5f3a6 DE |
253 | /* The number of elements allocated in all_type_units. |
254 | If there are skeleton-less TUs, we add them to all_type_units lazily. */ | |
255 | int n_allocated_type_units; | |
256 | ||
a2ce51a0 DE |
257 | /* The .debug_types-related CUs (TUs). |
258 | This is stored in malloc space because we may realloc it. */ | |
b4dd5633 | 259 | struct signatured_type **all_type_units; |
1fd400ff | 260 | |
f4dc4d17 DE |
261 | /* Table of struct type_unit_group objects. |
262 | The hash key is the DW_AT_stmt_list value. */ | |
263 | htab_t type_unit_groups; | |
72dca2f5 | 264 | |
348e048f DE |
265 | /* A table mapping .debug_types signatures to its signatured_type entry. |
266 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
267 | htab_t signatured_types; | |
268 | ||
f4dc4d17 DE |
269 | /* Type unit statistics, to see how well the scaling improvements |
270 | are doing. */ | |
52059ffd | 271 | struct tu_stats tu_stats; |
f4dc4d17 DE |
272 | |
273 | /* A chain of compilation units that are currently read in, so that | |
274 | they can be freed later. */ | |
275 | struct dwarf2_per_cu_data *read_in_chain; | |
276 | ||
3019eac3 DE |
277 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
278 | This is NULL if the table hasn't been allocated yet. */ | |
279 | htab_t dwo_files; | |
280 | ||
80626a55 DE |
281 | /* Non-zero if we've check for whether there is a DWP file. */ |
282 | int dwp_checked; | |
283 | ||
284 | /* The DWP file if there is one, or NULL. */ | |
285 | struct dwp_file *dwp_file; | |
286 | ||
36586728 TT |
287 | /* The shared '.dwz' file, if one exists. This is used when the |
288 | original data was compressed using 'dwz -m'. */ | |
289 | struct dwz_file *dwz_file; | |
290 | ||
72dca2f5 FR |
291 | /* A flag indicating wether this objfile has a section loaded at a |
292 | VMA of 0. */ | |
293 | int has_section_at_zero; | |
9291a0cd | 294 | |
ae2de4f8 DE |
295 | /* True if we are using the mapped index, |
296 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
297 | unsigned char using_index; |
298 | ||
ae2de4f8 | 299 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 300 | struct mapped_index *index_table; |
98bfdba5 | 301 | |
7b9f3c50 | 302 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
303 | TUs typically share line table entries with a CU, so we maintain a |
304 | separate table of all line table entries to support the sharing. | |
305 | Note that while there can be way more TUs than CUs, we've already | |
306 | sorted all the TUs into "type unit groups", grouped by their | |
307 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
308 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
309 | htab_t quick_file_names_table; |
310 | ||
98bfdba5 PA |
311 | /* Set during partial symbol reading, to prevent queueing of full |
312 | symbols. */ | |
313 | int reading_partial_symbols; | |
673bfd45 | 314 | |
dee91e82 | 315 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 316 | This is NULL if not allocated yet. |
02142a6c | 317 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
dee91e82 | 318 | htab_t die_type_hash; |
95554aad TT |
319 | |
320 | /* The CUs we recently read. */ | |
321 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
527f3840 JK |
322 | |
323 | /* Table containing line_header indexed by offset and offset_in_dwz. */ | |
324 | htab_t line_header_hash; | |
6502dd73 DJ |
325 | }; |
326 | ||
327 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 328 | |
251d32d9 | 329 | /* Default names of the debugging sections. */ |
c906108c | 330 | |
233a11ab CS |
331 | /* Note that if the debugging section has been compressed, it might |
332 | have a name like .zdebug_info. */ | |
333 | ||
9cdd5dbd DE |
334 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
335 | { | |
251d32d9 TG |
336 | { ".debug_info", ".zdebug_info" }, |
337 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
338 | { ".debug_line", ".zdebug_line" }, | |
339 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 340 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 341 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 342 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 343 | { ".debug_str", ".zdebug_str" }, |
43988095 | 344 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 345 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 346 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 347 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 348 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
349 | { ".debug_frame", ".zdebug_frame" }, |
350 | { ".eh_frame", NULL }, | |
24d3216f TT |
351 | { ".gdb_index", ".zgdb_index" }, |
352 | 23 | |
251d32d9 | 353 | }; |
c906108c | 354 | |
80626a55 | 355 | /* List of DWO/DWP sections. */ |
3019eac3 | 356 | |
80626a55 | 357 | static const struct dwop_section_names |
3019eac3 DE |
358 | { |
359 | struct dwarf2_section_names abbrev_dwo; | |
360 | struct dwarf2_section_names info_dwo; | |
361 | struct dwarf2_section_names line_dwo; | |
362 | struct dwarf2_section_names loc_dwo; | |
43988095 | 363 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
364 | struct dwarf2_section_names macinfo_dwo; |
365 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
366 | struct dwarf2_section_names str_dwo; |
367 | struct dwarf2_section_names str_offsets_dwo; | |
368 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
369 | struct dwarf2_section_names cu_index; |
370 | struct dwarf2_section_names tu_index; | |
3019eac3 | 371 | } |
80626a55 | 372 | dwop_section_names = |
3019eac3 DE |
373 | { |
374 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
375 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
376 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
377 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 378 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
379 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
380 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
381 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
382 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
383 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
384 | { ".debug_cu_index", ".zdebug_cu_index" }, |
385 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
386 | }; |
387 | ||
c906108c SS |
388 | /* local data types */ |
389 | ||
107d2387 AC |
390 | /* The data in a compilation unit header, after target2host |
391 | translation, looks like this. */ | |
c906108c | 392 | struct comp_unit_head |
a738430d | 393 | { |
c764a876 | 394 | unsigned int length; |
a738430d | 395 | short version; |
a738430d MK |
396 | unsigned char addr_size; |
397 | unsigned char signed_addr_p; | |
b64f50a1 | 398 | sect_offset abbrev_offset; |
57349743 | 399 | |
a738430d MK |
400 | /* Size of file offsets; either 4 or 8. */ |
401 | unsigned int offset_size; | |
57349743 | 402 | |
a738430d MK |
403 | /* Size of the length field; either 4 or 12. */ |
404 | unsigned int initial_length_size; | |
57349743 | 405 | |
43988095 JK |
406 | enum dwarf_unit_type unit_type; |
407 | ||
a738430d MK |
408 | /* Offset to the first byte of this compilation unit header in the |
409 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 410 | sect_offset offset; |
57349743 | 411 | |
d00adf39 DE |
412 | /* Offset to first die in this cu from the start of the cu. |
413 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 414 | cu_offset first_die_offset; |
43988095 JK |
415 | |
416 | /* 64-bit signature of this type unit - it is valid only for | |
417 | UNIT_TYPE DW_UT_type. */ | |
418 | ULONGEST signature; | |
419 | ||
420 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
421 | cu_offset type_offset_in_tu; | |
a738430d | 422 | }; |
c906108c | 423 | |
3da10d80 KS |
424 | /* Type used for delaying computation of method physnames. |
425 | See comments for compute_delayed_physnames. */ | |
426 | struct delayed_method_info | |
427 | { | |
428 | /* The type to which the method is attached, i.e., its parent class. */ | |
429 | struct type *type; | |
430 | ||
431 | /* The index of the method in the type's function fieldlists. */ | |
432 | int fnfield_index; | |
433 | ||
434 | /* The index of the method in the fieldlist. */ | |
435 | int index; | |
436 | ||
437 | /* The name of the DIE. */ | |
438 | const char *name; | |
439 | ||
440 | /* The DIE associated with this method. */ | |
441 | struct die_info *die; | |
442 | }; | |
443 | ||
444 | typedef struct delayed_method_info delayed_method_info; | |
445 | DEF_VEC_O (delayed_method_info); | |
446 | ||
e7c27a73 DJ |
447 | /* Internal state when decoding a particular compilation unit. */ |
448 | struct dwarf2_cu | |
449 | { | |
450 | /* The objfile containing this compilation unit. */ | |
451 | struct objfile *objfile; | |
452 | ||
d00adf39 | 453 | /* The header of the compilation unit. */ |
e7c27a73 | 454 | struct comp_unit_head header; |
e142c38c | 455 | |
d00adf39 DE |
456 | /* Base address of this compilation unit. */ |
457 | CORE_ADDR base_address; | |
458 | ||
459 | /* Non-zero if base_address has been set. */ | |
460 | int base_known; | |
461 | ||
e142c38c DJ |
462 | /* The language we are debugging. */ |
463 | enum language language; | |
464 | const struct language_defn *language_defn; | |
465 | ||
b0f35d58 DL |
466 | const char *producer; |
467 | ||
e142c38c DJ |
468 | /* The generic symbol table building routines have separate lists for |
469 | file scope symbols and all all other scopes (local scopes). So | |
470 | we need to select the right one to pass to add_symbol_to_list(). | |
471 | We do it by keeping a pointer to the correct list in list_in_scope. | |
472 | ||
473 | FIXME: The original dwarf code just treated the file scope as the | |
474 | first local scope, and all other local scopes as nested local | |
475 | scopes, and worked fine. Check to see if we really need to | |
476 | distinguish these in buildsym.c. */ | |
477 | struct pending **list_in_scope; | |
478 | ||
433df2d4 DE |
479 | /* The abbrev table for this CU. |
480 | Normally this points to the abbrev table in the objfile. | |
481 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
482 | struct abbrev_table *abbrev_table; | |
72bf9492 | 483 | |
b64f50a1 JK |
484 | /* Hash table holding all the loaded partial DIEs |
485 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
486 | htab_t partial_dies; |
487 | ||
488 | /* Storage for things with the same lifetime as this read-in compilation | |
489 | unit, including partial DIEs. */ | |
490 | struct obstack comp_unit_obstack; | |
491 | ||
ae038cb0 DJ |
492 | /* When multiple dwarf2_cu structures are living in memory, this field |
493 | chains them all together, so that they can be released efficiently. | |
494 | We will probably also want a generation counter so that most-recently-used | |
495 | compilation units are cached... */ | |
496 | struct dwarf2_per_cu_data *read_in_chain; | |
497 | ||
69d751e3 | 498 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
499 | struct dwarf2_per_cu_data *per_cu; |
500 | ||
501 | /* How many compilation units ago was this CU last referenced? */ | |
502 | int last_used; | |
503 | ||
b64f50a1 JK |
504 | /* A hash table of DIE cu_offset for following references with |
505 | die_info->offset.sect_off as hash. */ | |
51545339 | 506 | htab_t die_hash; |
10b3939b DJ |
507 | |
508 | /* Full DIEs if read in. */ | |
509 | struct die_info *dies; | |
510 | ||
511 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
512 | units referenced by this one. Only set during full symbol processing; | |
513 | partial symbol tables do not have dependencies. */ | |
514 | htab_t dependencies; | |
515 | ||
cb1df416 DJ |
516 | /* Header data from the line table, during full symbol processing. */ |
517 | struct line_header *line_header; | |
518 | ||
3da10d80 KS |
519 | /* A list of methods which need to have physnames computed |
520 | after all type information has been read. */ | |
521 | VEC (delayed_method_info) *method_list; | |
522 | ||
96408a79 SA |
523 | /* To be copied to symtab->call_site_htab. */ |
524 | htab_t call_site_htab; | |
525 | ||
034e5797 DE |
526 | /* Non-NULL if this CU came from a DWO file. |
527 | There is an invariant here that is important to remember: | |
528 | Except for attributes copied from the top level DIE in the "main" | |
529 | (or "stub") file in preparation for reading the DWO file | |
530 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
531 | Either there isn't a DWO file (in which case this is NULL and the point | |
532 | is moot), or there is and either we're not going to read it (in which | |
533 | case this is NULL) or there is and we are reading it (in which case this | |
534 | is non-NULL). */ | |
3019eac3 DE |
535 | struct dwo_unit *dwo_unit; |
536 | ||
537 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
538 | (zero is a valid value though). | |
1dbab08b | 539 | Note this value comes from the Fission stub CU/TU's DIE. */ |
3019eac3 DE |
540 | ULONGEST addr_base; |
541 | ||
2e3cf129 DE |
542 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
543 | (zero is a valid value though). | |
1dbab08b | 544 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 545 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
546 | be used without needing to know whether DWO files are in use or not. |
547 | N.B. This does not apply to DW_AT_ranges appearing in | |
548 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
549 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
550 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
551 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
552 | ULONGEST ranges_base; |
553 | ||
ae038cb0 DJ |
554 | /* Mark used when releasing cached dies. */ |
555 | unsigned int mark : 1; | |
556 | ||
8be455d7 JK |
557 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
558 | This test is imperfect as there may exist optimized debug code not using | |
559 | any location list and still facing inlining issues if handled as | |
560 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 561 | unsigned int has_loclist : 1; |
ba919b58 | 562 | |
1b80a9fa JK |
563 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
564 | if all the producer_is_* fields are valid. This information is cached | |
565 | because profiling CU expansion showed excessive time spent in | |
566 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
567 | unsigned int checked_producer : 1; |
568 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 569 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 570 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
571 | |
572 | /* When set, the file that we're processing is known to have | |
573 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
574 | this information, but later versions do. */ | |
575 | ||
576 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
577 | }; |
578 | ||
10b3939b DJ |
579 | /* Persistent data held for a compilation unit, even when not |
580 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 581 | read_symtab_private field of the psymtab. */ |
10b3939b | 582 | |
ae038cb0 DJ |
583 | struct dwarf2_per_cu_data |
584 | { | |
36586728 | 585 | /* The start offset and length of this compilation unit. |
45452591 | 586 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
587 | initial_length_size. |
588 | If the DIE refers to a DWO file, this is always of the original die, | |
589 | not the DWO file. */ | |
b64f50a1 | 590 | sect_offset offset; |
36586728 | 591 | unsigned int length; |
ae038cb0 | 592 | |
43988095 JK |
593 | /* DWARF standard version this data has been read from (such as 4 or 5). */ |
594 | short dwarf_version; | |
595 | ||
ae038cb0 DJ |
596 | /* Flag indicating this compilation unit will be read in before |
597 | any of the current compilation units are processed. */ | |
c764a876 | 598 | unsigned int queued : 1; |
ae038cb0 | 599 | |
0d99eb77 DE |
600 | /* This flag will be set when reading partial DIEs if we need to load |
601 | absolutely all DIEs for this compilation unit, instead of just the ones | |
602 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
603 | hash table and don't find it. */ |
604 | unsigned int load_all_dies : 1; | |
605 | ||
0186c6a7 DE |
606 | /* Non-zero if this CU is from .debug_types. |
607 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
608 | this is non-zero. */ | |
3019eac3 DE |
609 | unsigned int is_debug_types : 1; |
610 | ||
36586728 TT |
611 | /* Non-zero if this CU is from the .dwz file. */ |
612 | unsigned int is_dwz : 1; | |
613 | ||
a2ce51a0 DE |
614 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
615 | This flag is only valid if is_debug_types is true. | |
616 | We can't read a CU directly from a DWO file: There are required | |
617 | attributes in the stub. */ | |
618 | unsigned int reading_dwo_directly : 1; | |
619 | ||
7ee85ab1 DE |
620 | /* Non-zero if the TU has been read. |
621 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
622 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
623 | fetching them from random other DWOs (due to comdat folding). | |
624 | If the TU has already been read, the optimization is unnecessary | |
625 | (and unwise - we don't want to change where gdb thinks the TU lives | |
626 | "midflight"). | |
627 | This flag is only valid if is_debug_types is true. */ | |
628 | unsigned int tu_read : 1; | |
629 | ||
3019eac3 DE |
630 | /* The section this CU/TU lives in. |
631 | If the DIE refers to a DWO file, this is always the original die, | |
632 | not the DWO file. */ | |
8a0459fd | 633 | struct dwarf2_section_info *section; |
348e048f | 634 | |
17ea53c3 | 635 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
cc12ce38 DE |
636 | of the CU cache it gets reset to NULL again. This is left as NULL for |
637 | dummy CUs (a CU header, but nothing else). */ | |
ae038cb0 | 638 | struct dwarf2_cu *cu; |
1c379e20 | 639 | |
9cdd5dbd DE |
640 | /* The corresponding objfile. |
641 | Normally we can get the objfile from dwarf2_per_objfile. | |
642 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
643 | struct objfile *objfile; |
644 | ||
fffbe6a8 YQ |
645 | /* When dwarf2_per_objfile->using_index is true, the 'quick' field |
646 | is active. Otherwise, the 'psymtab' field is active. */ | |
9291a0cd TT |
647 | union |
648 | { | |
649 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 650 | or NULL for unread partial units. */ |
9291a0cd TT |
651 | struct partial_symtab *psymtab; |
652 | ||
653 | /* Data needed by the "quick" functions. */ | |
654 | struct dwarf2_per_cu_quick_data *quick; | |
655 | } v; | |
95554aad | 656 | |
796a7ff8 DE |
657 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
658 | while reading psymtabs, used to compute the psymtab dependencies, | |
659 | and then cleared. Then it is filled in again while reading full | |
660 | symbols, and only deleted when the objfile is destroyed. | |
661 | ||
662 | This is also used to work around a difference between the way gold | |
663 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
664 | is a gold bug. For symbols coming from TUs, gold records in the index | |
665 | the CU that includes the TU instead of the TU itself. This breaks | |
666 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
667 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
668 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
669 | we need to look in TU Z to find X. Fortunately, this is akin to | |
670 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
671 | .gdb_index version <=7 this also records the TUs that the CU referred | |
672 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
673 | indices so we only pay a price for gold generated indices. |
674 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 675 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
676 | }; |
677 | ||
348e048f DE |
678 | /* Entry in the signatured_types hash table. */ |
679 | ||
680 | struct signatured_type | |
681 | { | |
42e7ad6c | 682 | /* The "per_cu" object of this type. |
ac9ec31b | 683 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
684 | N.B.: This is the first member so that it's easy to convert pointers |
685 | between them. */ | |
686 | struct dwarf2_per_cu_data per_cu; | |
687 | ||
3019eac3 | 688 | /* The type's signature. */ |
348e048f DE |
689 | ULONGEST signature; |
690 | ||
3019eac3 | 691 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
692 | If this TU is a DWO stub and the definition lives in a DWO file |
693 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
694 | cu_offset type_offset_in_tu; |
695 | ||
696 | /* Offset in the section of the type's DIE. | |
697 | If the definition lives in a DWO file, this is the offset in the | |
698 | .debug_types.dwo section. | |
699 | The value is zero until the actual value is known. | |
700 | Zero is otherwise not a valid section offset. */ | |
701 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
702 | |
703 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
704 | can share them. This points to the containing symtab. */ | |
705 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
706 | |
707 | /* The type. | |
708 | The first time we encounter this type we fully read it in and install it | |
709 | in the symbol tables. Subsequent times we only need the type. */ | |
710 | struct type *type; | |
a2ce51a0 DE |
711 | |
712 | /* Containing DWO unit. | |
713 | This field is valid iff per_cu.reading_dwo_directly. */ | |
714 | struct dwo_unit *dwo_unit; | |
348e048f DE |
715 | }; |
716 | ||
0186c6a7 DE |
717 | typedef struct signatured_type *sig_type_ptr; |
718 | DEF_VEC_P (sig_type_ptr); | |
719 | ||
094b34ac DE |
720 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
721 | This includes type_unit_group and quick_file_names. */ | |
722 | ||
723 | struct stmt_list_hash | |
724 | { | |
725 | /* The DWO unit this table is from or NULL if there is none. */ | |
726 | struct dwo_unit *dwo_unit; | |
727 | ||
728 | /* Offset in .debug_line or .debug_line.dwo. */ | |
729 | sect_offset line_offset; | |
730 | }; | |
731 | ||
f4dc4d17 DE |
732 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
733 | an object of this type. */ | |
734 | ||
735 | struct type_unit_group | |
736 | { | |
0186c6a7 | 737 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
738 | To simplify things we create an artificial CU that "includes" all the |
739 | type units using this stmt_list so that the rest of the code still has | |
740 | a "per_cu" handle on the symtab. | |
741 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 742 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
743 | struct dwarf2_per_cu_data per_cu; |
744 | ||
0186c6a7 DE |
745 | /* The TUs that share this DW_AT_stmt_list entry. |
746 | This is added to while parsing type units to build partial symtabs, | |
747 | and is deleted afterwards and not used again. */ | |
748 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 749 | |
43f3e411 | 750 | /* The compunit symtab. |
094b34ac | 751 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
752 | so we create an essentially anonymous symtab as the compunit symtab. */ |
753 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 754 | |
094b34ac DE |
755 | /* The data used to construct the hash key. */ |
756 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
757 | |
758 | /* The number of symtabs from the line header. | |
759 | The value here must match line_header.num_file_names. */ | |
760 | unsigned int num_symtabs; | |
761 | ||
762 | /* The symbol tables for this TU (obtained from the files listed in | |
763 | DW_AT_stmt_list). | |
764 | WARNING: The order of entries here must match the order of entries | |
765 | in the line header. After the first TU using this type_unit_group, the | |
766 | line header for the subsequent TUs is recreated from this. This is done | |
767 | because we need to use the same symtabs for each TU using the same | |
768 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
769 | there's no guarantee the line header doesn't have duplicate entries. */ | |
770 | struct symtab **symtabs; | |
771 | }; | |
772 | ||
73869dc2 | 773 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
774 | |
775 | struct dwo_sections | |
776 | { | |
777 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
778 | struct dwarf2_section_info line; |
779 | struct dwarf2_section_info loc; | |
43988095 | 780 | struct dwarf2_section_info loclists; |
09262596 DE |
781 | struct dwarf2_section_info macinfo; |
782 | struct dwarf2_section_info macro; | |
3019eac3 DE |
783 | struct dwarf2_section_info str; |
784 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
785 | /* In the case of a virtual DWO file, these two are unused. */ |
786 | struct dwarf2_section_info info; | |
3019eac3 DE |
787 | VEC (dwarf2_section_info_def) *types; |
788 | }; | |
789 | ||
c88ee1f0 | 790 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
791 | |
792 | struct dwo_unit | |
793 | { | |
794 | /* Backlink to the containing struct dwo_file. */ | |
795 | struct dwo_file *dwo_file; | |
796 | ||
797 | /* The "id" that distinguishes this CU/TU. | |
798 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
799 | Since signatures came first, we stick with it for consistency. */ | |
800 | ULONGEST signature; | |
801 | ||
802 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 803 | struct dwarf2_section_info *section; |
3019eac3 | 804 | |
19ac8c2e | 805 | /* Same as dwarf2_per_cu_data:{offset,length} but in the DWO section. */ |
3019eac3 DE |
806 | sect_offset offset; |
807 | unsigned int length; | |
808 | ||
809 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
810 | cu_offset type_offset_in_tu; | |
811 | }; | |
812 | ||
73869dc2 DE |
813 | /* include/dwarf2.h defines the DWP section codes. |
814 | It defines a max value but it doesn't define a min value, which we | |
815 | use for error checking, so provide one. */ | |
816 | ||
817 | enum dwp_v2_section_ids | |
818 | { | |
819 | DW_SECT_MIN = 1 | |
820 | }; | |
821 | ||
80626a55 | 822 | /* Data for one DWO file. |
57d63ce2 DE |
823 | |
824 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
825 | appears in a DWP file). DWP files don't really have DWO files per se - | |
826 | comdat folding of types "loses" the DWO file they came from, and from | |
827 | a high level view DWP files appear to contain a mass of random types. | |
828 | However, to maintain consistency with the non-DWP case we pretend DWP | |
829 | files contain virtual DWO files, and we assign each TU with one virtual | |
830 | DWO file (generally based on the line and abbrev section offsets - | |
831 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
832 | |
833 | struct dwo_file | |
834 | { | |
0ac5b59e | 835 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
836 | For virtual DWO files the name is constructed from the section offsets |
837 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
838 | from related CU+TUs. */ | |
0ac5b59e DE |
839 | const char *dwo_name; |
840 | ||
841 | /* The DW_AT_comp_dir attribute. */ | |
842 | const char *comp_dir; | |
3019eac3 | 843 | |
80626a55 DE |
844 | /* The bfd, when the file is open. Otherwise this is NULL. |
845 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
846 | bfd *dbfd; | |
3019eac3 | 847 | |
73869dc2 DE |
848 | /* The sections that make up this DWO file. |
849 | Remember that for virtual DWO files in DWP V2, these are virtual | |
850 | sections (for lack of a better name). */ | |
3019eac3 DE |
851 | struct dwo_sections sections; |
852 | ||
19c3d4c9 DE |
853 | /* The CU in the file. |
854 | We only support one because having more than one requires hacking the | |
855 | dwo_name of each to match, which is highly unlikely to happen. | |
856 | Doing this means all TUs can share comp_dir: We also assume that | |
857 | DW_AT_comp_dir across all TUs in a DWO file will be identical. */ | |
858 | struct dwo_unit *cu; | |
3019eac3 DE |
859 | |
860 | /* Table of TUs in the file. | |
861 | Each element is a struct dwo_unit. */ | |
862 | htab_t tus; | |
863 | }; | |
864 | ||
80626a55 DE |
865 | /* These sections are what may appear in a DWP file. */ |
866 | ||
867 | struct dwp_sections | |
868 | { | |
73869dc2 | 869 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
870 | struct dwarf2_section_info str; |
871 | struct dwarf2_section_info cu_index; | |
872 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
873 | |
874 | /* These are only used by DWP version 2 files. | |
875 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
876 | sections are referenced by section number, and are not recorded here. | |
877 | In DWP version 2 there is at most one copy of all these sections, each | |
878 | section being (effectively) comprised of the concatenation of all of the | |
879 | individual sections that exist in the version 1 format. | |
880 | To keep the code simple we treat each of these concatenated pieces as a | |
881 | section itself (a virtual section?). */ | |
882 | struct dwarf2_section_info abbrev; | |
883 | struct dwarf2_section_info info; | |
884 | struct dwarf2_section_info line; | |
885 | struct dwarf2_section_info loc; | |
886 | struct dwarf2_section_info macinfo; | |
887 | struct dwarf2_section_info macro; | |
888 | struct dwarf2_section_info str_offsets; | |
889 | struct dwarf2_section_info types; | |
80626a55 DE |
890 | }; |
891 | ||
73869dc2 DE |
892 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
893 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 894 | |
73869dc2 | 895 | struct virtual_v1_dwo_sections |
80626a55 DE |
896 | { |
897 | struct dwarf2_section_info abbrev; | |
898 | struct dwarf2_section_info line; | |
899 | struct dwarf2_section_info loc; | |
900 | struct dwarf2_section_info macinfo; | |
901 | struct dwarf2_section_info macro; | |
902 | struct dwarf2_section_info str_offsets; | |
903 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 904 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
905 | struct dwarf2_section_info info_or_types; |
906 | }; | |
907 | ||
73869dc2 DE |
908 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
909 | In version 2, the sections of the DWO files are concatenated together | |
910 | and stored in one section of that name. Thus each ELF section contains | |
911 | several "virtual" sections. */ | |
912 | ||
913 | struct virtual_v2_dwo_sections | |
914 | { | |
915 | bfd_size_type abbrev_offset; | |
916 | bfd_size_type abbrev_size; | |
917 | ||
918 | bfd_size_type line_offset; | |
919 | bfd_size_type line_size; | |
920 | ||
921 | bfd_size_type loc_offset; | |
922 | bfd_size_type loc_size; | |
923 | ||
924 | bfd_size_type macinfo_offset; | |
925 | bfd_size_type macinfo_size; | |
926 | ||
927 | bfd_size_type macro_offset; | |
928 | bfd_size_type macro_size; | |
929 | ||
930 | bfd_size_type str_offsets_offset; | |
931 | bfd_size_type str_offsets_size; | |
932 | ||
933 | /* Each DWP hash table entry records one CU or one TU. | |
934 | That is recorded here, and copied to dwo_unit.section. */ | |
935 | bfd_size_type info_or_types_offset; | |
936 | bfd_size_type info_or_types_size; | |
937 | }; | |
938 | ||
80626a55 DE |
939 | /* Contents of DWP hash tables. */ |
940 | ||
941 | struct dwp_hash_table | |
942 | { | |
73869dc2 | 943 | uint32_t version, nr_columns; |
80626a55 | 944 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
945 | const gdb_byte *hash_table, *unit_table; |
946 | union | |
947 | { | |
948 | struct | |
949 | { | |
950 | const gdb_byte *indices; | |
951 | } v1; | |
952 | struct | |
953 | { | |
954 | /* This is indexed by column number and gives the id of the section | |
955 | in that column. */ | |
956 | #define MAX_NR_V2_DWO_SECTIONS \ | |
957 | (1 /* .debug_info or .debug_types */ \ | |
958 | + 1 /* .debug_abbrev */ \ | |
959 | + 1 /* .debug_line */ \ | |
960 | + 1 /* .debug_loc */ \ | |
961 | + 1 /* .debug_str_offsets */ \ | |
962 | + 1 /* .debug_macro or .debug_macinfo */) | |
963 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
964 | const gdb_byte *offsets; | |
965 | const gdb_byte *sizes; | |
966 | } v2; | |
967 | } section_pool; | |
80626a55 DE |
968 | }; |
969 | ||
970 | /* Data for one DWP file. */ | |
971 | ||
972 | struct dwp_file | |
973 | { | |
974 | /* Name of the file. */ | |
975 | const char *name; | |
976 | ||
73869dc2 DE |
977 | /* File format version. */ |
978 | int version; | |
979 | ||
93417882 | 980 | /* The bfd. */ |
80626a55 DE |
981 | bfd *dbfd; |
982 | ||
983 | /* Section info for this file. */ | |
984 | struct dwp_sections sections; | |
985 | ||
57d63ce2 | 986 | /* Table of CUs in the file. */ |
80626a55 DE |
987 | const struct dwp_hash_table *cus; |
988 | ||
989 | /* Table of TUs in the file. */ | |
990 | const struct dwp_hash_table *tus; | |
991 | ||
19ac8c2e DE |
992 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
993 | htab_t loaded_cus; | |
994 | htab_t loaded_tus; | |
80626a55 | 995 | |
73869dc2 DE |
996 | /* Table to map ELF section numbers to their sections. |
997 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
998 | unsigned int num_sections; |
999 | asection **elf_sections; | |
1000 | }; | |
1001 | ||
36586728 TT |
1002 | /* This represents a '.dwz' file. */ |
1003 | ||
1004 | struct dwz_file | |
1005 | { | |
1006 | /* A dwz file can only contain a few sections. */ | |
1007 | struct dwarf2_section_info abbrev; | |
1008 | struct dwarf2_section_info info; | |
1009 | struct dwarf2_section_info str; | |
1010 | struct dwarf2_section_info line; | |
1011 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 1012 | struct dwarf2_section_info gdb_index; |
36586728 TT |
1013 | |
1014 | /* The dwz's BFD. */ | |
1015 | bfd *dwz_bfd; | |
1016 | }; | |
1017 | ||
0963b4bd MS |
1018 | /* Struct used to pass misc. parameters to read_die_and_children, et |
1019 | al. which are used for both .debug_info and .debug_types dies. | |
1020 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 1021 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
1022 | |
1023 | struct die_reader_specs | |
1024 | { | |
a32a8923 | 1025 | /* The bfd of die_section. */ |
93311388 DE |
1026 | bfd* abfd; |
1027 | ||
1028 | /* The CU of the DIE we are parsing. */ | |
1029 | struct dwarf2_cu *cu; | |
1030 | ||
80626a55 | 1031 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1032 | struct dwo_file *dwo_file; |
1033 | ||
dee91e82 | 1034 | /* The section the die comes from. |
3019eac3 | 1035 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1036 | struct dwarf2_section_info *die_section; |
1037 | ||
1038 | /* die_section->buffer. */ | |
d521ce57 | 1039 | const gdb_byte *buffer; |
f664829e DE |
1040 | |
1041 | /* The end of the buffer. */ | |
1042 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1043 | |
1044 | /* The value of the DW_AT_comp_dir attribute. */ | |
1045 | const char *comp_dir; | |
93311388 DE |
1046 | }; |
1047 | ||
fd820528 | 1048 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1049 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1050 | const gdb_byte *info_ptr, |
dee91e82 DE |
1051 | struct die_info *comp_unit_die, |
1052 | int has_children, | |
1053 | void *data); | |
1054 | ||
52059ffd TT |
1055 | struct file_entry |
1056 | { | |
1057 | const char *name; | |
1058 | unsigned int dir_index; | |
1059 | unsigned int mod_time; | |
1060 | unsigned int length; | |
83769d0b DE |
1061 | /* Non-zero if referenced by the Line Number Program. */ |
1062 | int included_p; | |
1063 | /* The associated symbol table, if any. */ | |
1064 | struct symtab *symtab; | |
52059ffd TT |
1065 | }; |
1066 | ||
debd256d JB |
1067 | /* The line number information for a compilation unit (found in the |
1068 | .debug_line section) begins with a "statement program header", | |
1069 | which contains the following information. */ | |
1070 | struct line_header | |
1071 | { | |
527f3840 JK |
1072 | /* Offset of line number information in .debug_line section. */ |
1073 | sect_offset offset; | |
1074 | ||
1075 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
1076 | unsigned offset_in_dwz : 1; | |
1077 | ||
debd256d JB |
1078 | unsigned int total_length; |
1079 | unsigned short version; | |
1080 | unsigned int header_length; | |
1081 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 1082 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
1083 | unsigned char default_is_stmt; |
1084 | int line_base; | |
1085 | unsigned char line_range; | |
1086 | unsigned char opcode_base; | |
1087 | ||
1088 | /* standard_opcode_lengths[i] is the number of operands for the | |
1089 | standard opcode whose value is i. This means that | |
1090 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1091 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
1092 | unsigned char *standard_opcode_lengths; | |
1093 | ||
1094 | /* The include_directories table. NOTE! These strings are not | |
1095 | allocated with xmalloc; instead, they are pointers into | |
1096 | debug_line_buffer. If you try to free them, `free' will get | |
1097 | indigestion. */ | |
1098 | unsigned int num_include_dirs, include_dirs_size; | |
d521ce57 | 1099 | const char **include_dirs; |
debd256d JB |
1100 | |
1101 | /* The file_names table. NOTE! These strings are not allocated | |
1102 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
1103 | Don't try to free them directly. */ | |
1104 | unsigned int num_file_names, file_names_size; | |
52059ffd | 1105 | struct file_entry *file_names; |
debd256d JB |
1106 | |
1107 | /* The start and end of the statement program following this | |
6502dd73 | 1108 | header. These point into dwarf2_per_objfile->line_buffer. */ |
d521ce57 | 1109 | const gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 1110 | }; |
c906108c SS |
1111 | |
1112 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 1113 | need this much information. */ |
c906108c SS |
1114 | struct partial_die_info |
1115 | { | |
72bf9492 | 1116 | /* Offset of this DIE. */ |
b64f50a1 | 1117 | sect_offset offset; |
72bf9492 DJ |
1118 | |
1119 | /* DWARF-2 tag for this DIE. */ | |
1120 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1121 | ||
72bf9492 DJ |
1122 | /* Assorted flags describing the data found in this DIE. */ |
1123 | unsigned int has_children : 1; | |
1124 | unsigned int is_external : 1; | |
1125 | unsigned int is_declaration : 1; | |
1126 | unsigned int has_type : 1; | |
1127 | unsigned int has_specification : 1; | |
1128 | unsigned int has_pc_info : 1; | |
481860b3 | 1129 | unsigned int may_be_inlined : 1; |
72bf9492 | 1130 | |
0c1b455e TT |
1131 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1132 | unsigned int main_subprogram : 1; | |
1133 | ||
72bf9492 DJ |
1134 | /* Flag set if the SCOPE field of this structure has been |
1135 | computed. */ | |
1136 | unsigned int scope_set : 1; | |
1137 | ||
fa4028e9 JB |
1138 | /* Flag set if the DIE has a byte_size attribute. */ |
1139 | unsigned int has_byte_size : 1; | |
1140 | ||
ff908ebf AW |
1141 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1142 | unsigned int has_const_value : 1; | |
1143 | ||
98bfdba5 PA |
1144 | /* Flag set if any of the DIE's children are template arguments. */ |
1145 | unsigned int has_template_arguments : 1; | |
1146 | ||
abc72ce4 DE |
1147 | /* Flag set if fixup_partial_die has been called on this die. */ |
1148 | unsigned int fixup_called : 1; | |
1149 | ||
36586728 TT |
1150 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1151 | unsigned int is_dwz : 1; | |
1152 | ||
1153 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1154 | unsigned int spec_is_dwz : 1; | |
1155 | ||
72bf9492 | 1156 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1157 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1158 | const char *name; |
72bf9492 | 1159 | |
abc72ce4 DE |
1160 | /* The linkage name, if present. */ |
1161 | const char *linkage_name; | |
1162 | ||
72bf9492 DJ |
1163 | /* The scope to prepend to our children. This is generally |
1164 | allocated on the comp_unit_obstack, so will disappear | |
1165 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1166 | const char *scope; |
72bf9492 | 1167 | |
95554aad TT |
1168 | /* Some data associated with the partial DIE. The tag determines |
1169 | which field is live. */ | |
1170 | union | |
1171 | { | |
1172 | /* The location description associated with this DIE, if any. */ | |
1173 | struct dwarf_block *locdesc; | |
1174 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
1175 | sect_offset offset; | |
1176 | } d; | |
72bf9492 DJ |
1177 | |
1178 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1179 | CORE_ADDR lowpc; |
1180 | CORE_ADDR highpc; | |
72bf9492 | 1181 | |
93311388 | 1182 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1183 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1184 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1185 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1186 | const gdb_byte *sibling; |
72bf9492 DJ |
1187 | |
1188 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1189 | DW_AT_specification (or DW_AT_abstract_origin or | |
1190 | DW_AT_extension). */ | |
b64f50a1 | 1191 | sect_offset spec_offset; |
72bf9492 DJ |
1192 | |
1193 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1194 | if any. */ | |
1195 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1196 | }; |
1197 | ||
0963b4bd | 1198 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1199 | struct abbrev_info |
1200 | { | |
1201 | unsigned int number; /* number identifying abbrev */ | |
1202 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1203 | unsigned short has_children; /* boolean */ |
1204 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1205 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1206 | struct abbrev_info *next; /* next in chain */ | |
1207 | }; | |
1208 | ||
1209 | struct attr_abbrev | |
1210 | { | |
9d25dd43 DE |
1211 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1212 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1213 | |
1214 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1215 | LONGEST implicit_const; | |
c906108c SS |
1216 | }; |
1217 | ||
433df2d4 DE |
1218 | /* Size of abbrev_table.abbrev_hash_table. */ |
1219 | #define ABBREV_HASH_SIZE 121 | |
1220 | ||
1221 | /* Top level data structure to contain an abbreviation table. */ | |
1222 | ||
1223 | struct abbrev_table | |
1224 | { | |
f4dc4d17 DE |
1225 | /* Where the abbrev table came from. |
1226 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1227 | sect_offset offset; |
1228 | ||
1229 | /* Storage for the abbrev table. */ | |
1230 | struct obstack abbrev_obstack; | |
1231 | ||
1232 | /* Hash table of abbrevs. | |
1233 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1234 | It could be statically allocated, but the previous code didn't so we | |
1235 | don't either. */ | |
1236 | struct abbrev_info **abbrevs; | |
1237 | }; | |
1238 | ||
0963b4bd | 1239 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1240 | struct attribute |
1241 | { | |
9d25dd43 | 1242 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1243 | ENUM_BITFIELD(dwarf_form) form : 15; |
1244 | ||
1245 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1246 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1247 | here for better struct attribute alignment. */ | |
1248 | unsigned int string_is_canonical : 1; | |
1249 | ||
b60c80d6 DJ |
1250 | union |
1251 | { | |
15d034d0 | 1252 | const char *str; |
b60c80d6 | 1253 | struct dwarf_block *blk; |
43bbcdc2 PH |
1254 | ULONGEST unsnd; |
1255 | LONGEST snd; | |
b60c80d6 | 1256 | CORE_ADDR addr; |
ac9ec31b | 1257 | ULONGEST signature; |
b60c80d6 DJ |
1258 | } |
1259 | u; | |
1260 | }; | |
1261 | ||
0963b4bd | 1262 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1263 | struct die_info |
1264 | { | |
76815b17 DE |
1265 | /* DWARF-2 tag for this DIE. */ |
1266 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1267 | ||
1268 | /* Number of attributes */ | |
98bfdba5 PA |
1269 | unsigned char num_attrs; |
1270 | ||
1271 | /* True if we're presently building the full type name for the | |
1272 | type derived from this DIE. */ | |
1273 | unsigned char building_fullname : 1; | |
76815b17 | 1274 | |
adde2bff DE |
1275 | /* True if this die is in process. PR 16581. */ |
1276 | unsigned char in_process : 1; | |
1277 | ||
76815b17 DE |
1278 | /* Abbrev number */ |
1279 | unsigned int abbrev; | |
1280 | ||
93311388 | 1281 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1282 | sect_offset offset; |
78ba4af6 JB |
1283 | |
1284 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1285 | points to this die's parent; CHILD points to the first child of | |
1286 | this node; and all the children of a given node are chained | |
4950bc1c | 1287 | together via their SIBLING fields. */ |
639d11d3 DC |
1288 | struct die_info *child; /* Its first child, if any. */ |
1289 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1290 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1291 | |
b60c80d6 DJ |
1292 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1293 | zero, but it's not common and zero-sized arrays are not | |
1294 | sufficiently portable C. */ | |
1295 | struct attribute attrs[1]; | |
c906108c SS |
1296 | }; |
1297 | ||
0963b4bd | 1298 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1299 | |
1300 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1301 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1302 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1303 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1304 | #define DW_SND(attr) ((attr)->u.snd) | |
1305 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1306 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1307 | |
0963b4bd | 1308 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1309 | struct dwarf_block |
1310 | { | |
56eb65bd | 1311 | size_t size; |
1d6edc3c JK |
1312 | |
1313 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1314 | const gdb_byte *data; |
c906108c SS |
1315 | }; |
1316 | ||
c906108c SS |
1317 | #ifndef ATTR_ALLOC_CHUNK |
1318 | #define ATTR_ALLOC_CHUNK 4 | |
1319 | #endif | |
1320 | ||
c906108c SS |
1321 | /* Allocate fields for structs, unions and enums in this size. */ |
1322 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1323 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1324 | #endif | |
1325 | ||
c906108c SS |
1326 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1327 | but this would require a corresponding change in unpack_field_as_long | |
1328 | and friends. */ | |
1329 | static int bits_per_byte = 8; | |
1330 | ||
52059ffd TT |
1331 | struct nextfield |
1332 | { | |
1333 | struct nextfield *next; | |
1334 | int accessibility; | |
1335 | int virtuality; | |
1336 | struct field field; | |
1337 | }; | |
1338 | ||
1339 | struct nextfnfield | |
1340 | { | |
1341 | struct nextfnfield *next; | |
1342 | struct fn_field fnfield; | |
1343 | }; | |
1344 | ||
1345 | struct fnfieldlist | |
1346 | { | |
1347 | const char *name; | |
1348 | int length; | |
1349 | struct nextfnfield *head; | |
1350 | }; | |
1351 | ||
1352 | struct typedef_field_list | |
1353 | { | |
1354 | struct typedef_field field; | |
1355 | struct typedef_field_list *next; | |
1356 | }; | |
1357 | ||
c906108c SS |
1358 | /* The routines that read and process dies for a C struct or C++ class |
1359 | pass lists of data member fields and lists of member function fields | |
1360 | in an instance of a field_info structure, as defined below. */ | |
1361 | struct field_info | |
c5aa993b | 1362 | { |
0963b4bd | 1363 | /* List of data member and baseclasses fields. */ |
52059ffd | 1364 | struct nextfield *fields, *baseclasses; |
c906108c | 1365 | |
7d0ccb61 | 1366 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1367 | int nfields; |
c906108c | 1368 | |
c5aa993b JM |
1369 | /* Number of baseclasses. */ |
1370 | int nbaseclasses; | |
c906108c | 1371 | |
c5aa993b JM |
1372 | /* Set if the accesibility of one of the fields is not public. */ |
1373 | int non_public_fields; | |
c906108c | 1374 | |
c5aa993b JM |
1375 | /* Member function fields array, entries are allocated in the order they |
1376 | are encountered in the object file. */ | |
52059ffd | 1377 | struct nextfnfield *fnfields; |
c906108c | 1378 | |
c5aa993b JM |
1379 | /* Member function fieldlist array, contains name of possibly overloaded |
1380 | member function, number of overloaded member functions and a pointer | |
1381 | to the head of the member function field chain. */ | |
52059ffd | 1382 | struct fnfieldlist *fnfieldlists; |
c906108c | 1383 | |
c5aa993b JM |
1384 | /* Number of entries in the fnfieldlists array. */ |
1385 | int nfnfields; | |
98751a41 JK |
1386 | |
1387 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1388 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
52059ffd | 1389 | struct typedef_field_list *typedef_field_list; |
98751a41 | 1390 | unsigned typedef_field_list_count; |
c5aa993b | 1391 | }; |
c906108c | 1392 | |
10b3939b DJ |
1393 | /* One item on the queue of compilation units to read in full symbols |
1394 | for. */ | |
1395 | struct dwarf2_queue_item | |
1396 | { | |
1397 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1398 | enum language pretend_language; |
10b3939b DJ |
1399 | struct dwarf2_queue_item *next; |
1400 | }; | |
1401 | ||
1402 | /* The current queue. */ | |
1403 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1404 | ||
ae038cb0 DJ |
1405 | /* Loaded secondary compilation units are kept in memory until they |
1406 | have not been referenced for the processing of this many | |
1407 | compilation units. Set this to zero to disable caching. Cache | |
1408 | sizes of up to at least twenty will improve startup time for | |
1409 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1410 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1411 | static void |
b4f54984 DE |
1412 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1413 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1414 | { |
3e43a32a | 1415 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1416 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1417 | value); |
1418 | } | |
4390d890 | 1419 | \f |
c906108c SS |
1420 | /* local function prototypes */ |
1421 | ||
a32a8923 DE |
1422 | static const char *get_section_name (const struct dwarf2_section_info *); |
1423 | ||
1424 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1425 | ||
4efb68b1 | 1426 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1427 | |
918dd910 JK |
1428 | static void dwarf2_find_base_address (struct die_info *die, |
1429 | struct dwarf2_cu *cu); | |
1430 | ||
0018ea6f DE |
1431 | static struct partial_symtab *create_partial_symtab |
1432 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1433 | ||
c67a9c90 | 1434 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1435 | |
72bf9492 DJ |
1436 | static void scan_partial_symbols (struct partial_die_info *, |
1437 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1438 | int, struct dwarf2_cu *); |
c906108c | 1439 | |
72bf9492 DJ |
1440 | static void add_partial_symbol (struct partial_die_info *, |
1441 | struct dwarf2_cu *); | |
63d06c5c | 1442 | |
72bf9492 DJ |
1443 | static void add_partial_namespace (struct partial_die_info *pdi, |
1444 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1445 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1446 | |
5d7cb8df | 1447 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1448 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1449 | struct dwarf2_cu *cu); |
1450 | ||
72bf9492 DJ |
1451 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1452 | struct dwarf2_cu *cu); | |
91c24f0a | 1453 | |
bc30ff58 JB |
1454 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1455 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1456 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1457 | |
257e7a09 YQ |
1458 | static void dwarf2_read_symtab (struct partial_symtab *, |
1459 | struct objfile *); | |
c906108c | 1460 | |
a14ed312 | 1461 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1462 | |
433df2d4 DE |
1463 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1464 | (const struct abbrev_table *, unsigned int); | |
1465 | ||
1466 | static struct abbrev_table *abbrev_table_read_table | |
1467 | (struct dwarf2_section_info *, sect_offset); | |
1468 | ||
1469 | static void abbrev_table_free (struct abbrev_table *); | |
1470 | ||
f4dc4d17 DE |
1471 | static void abbrev_table_free_cleanup (void *); |
1472 | ||
dee91e82 DE |
1473 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1474 | struct dwarf2_section_info *); | |
c906108c | 1475 | |
f3dd6933 | 1476 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1477 | |
d521ce57 | 1478 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1479 | |
dee91e82 | 1480 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1481 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1482 | |
d521ce57 TT |
1483 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1484 | struct partial_die_info *, | |
1485 | struct abbrev_info *, | |
1486 | unsigned int, | |
1487 | const gdb_byte *); | |
c906108c | 1488 | |
36586728 | 1489 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1490 | struct dwarf2_cu *); |
72bf9492 DJ |
1491 | |
1492 | static void fixup_partial_die (struct partial_die_info *, | |
1493 | struct dwarf2_cu *); | |
1494 | ||
d521ce57 TT |
1495 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1496 | struct attribute *, struct attr_abbrev *, | |
1497 | const gdb_byte *); | |
a8329558 | 1498 | |
a1855c1d | 1499 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1500 | |
a1855c1d | 1501 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1502 | |
a1855c1d | 1503 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1504 | |
a1855c1d | 1505 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1506 | |
a1855c1d | 1507 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1508 | |
d521ce57 | 1509 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1510 | unsigned int *); |
c906108c | 1511 | |
d521ce57 | 1512 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1513 | |
1514 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1515 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1516 | unsigned int *, unsigned int *); |
613e1657 | 1517 | |
d521ce57 TT |
1518 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1519 | const struct comp_unit_head *, | |
c764a876 DE |
1520 | unsigned int *); |
1521 | ||
d521ce57 | 1522 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1523 | |
f4dc4d17 DE |
1524 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1525 | sect_offset); | |
1526 | ||
d521ce57 | 1527 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1528 | |
d521ce57 | 1529 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1530 | |
d521ce57 TT |
1531 | static const char *read_indirect_string (bfd *, const gdb_byte *, |
1532 | const struct comp_unit_head *, | |
1533 | unsigned int *); | |
4bdf3d34 | 1534 | |
43988095 JK |
1535 | static const char *read_indirect_line_string (bfd *, const gdb_byte *, |
1536 | const struct comp_unit_head *, | |
1537 | unsigned int *); | |
36586728 | 1538 | |
43988095 | 1539 | static const char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
c906108c | 1540 | |
d521ce57 | 1541 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1542 | |
d521ce57 TT |
1543 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1544 | const gdb_byte *, | |
3019eac3 DE |
1545 | unsigned int *); |
1546 | ||
d521ce57 | 1547 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1548 | ULONGEST str_index); |
3019eac3 | 1549 | |
e142c38c | 1550 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1551 | |
e142c38c DJ |
1552 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1553 | struct dwarf2_cu *); | |
c906108c | 1554 | |
348e048f | 1555 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1556 | unsigned int); |
348e048f | 1557 | |
7d45c7c3 KB |
1558 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1559 | struct dwarf2_cu *cu); | |
1560 | ||
05cf31d1 JB |
1561 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1562 | struct dwarf2_cu *cu); | |
1563 | ||
e142c38c | 1564 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1565 | |
e142c38c | 1566 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1567 | struct dwarf2_cu **); |
63d06c5c | 1568 | |
debd256d JB |
1569 | static void free_line_header (struct line_header *lh); |
1570 | ||
3019eac3 DE |
1571 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1572 | struct dwarf2_cu *cu); | |
debd256d | 1573 | |
f3f5162e | 1574 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1575 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1576 | CORE_ADDR, int decode_mapping); |
c906108c | 1577 | |
4d663531 | 1578 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1579 | |
43f3e411 DE |
1580 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1581 | const char *, const char *, | |
1582 | CORE_ADDR); | |
f4dc4d17 | 1583 | |
a14ed312 | 1584 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1585 | struct dwarf2_cu *); |
c906108c | 1586 | |
34eaf542 TT |
1587 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1588 | struct dwarf2_cu *, struct symbol *); | |
1589 | ||
ff39bb5e | 1590 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1591 | struct dwarf2_cu *); |
c906108c | 1592 | |
ff39bb5e | 1593 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1594 | struct type *type, |
1595 | const char *name, | |
1596 | struct obstack *obstack, | |
12df843f | 1597 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1598 | const gdb_byte **bytes, |
98bfdba5 | 1599 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1600 | |
e7c27a73 | 1601 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1602 | |
b4ba55a1 JB |
1603 | static int need_gnat_info (struct dwarf2_cu *); |
1604 | ||
3e43a32a MS |
1605 | static struct type *die_descriptive_type (struct die_info *, |
1606 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1607 | |
1608 | static void set_descriptive_type (struct type *, struct die_info *, | |
1609 | struct dwarf2_cu *); | |
1610 | ||
e7c27a73 DJ |
1611 | static struct type *die_containing_type (struct die_info *, |
1612 | struct dwarf2_cu *); | |
c906108c | 1613 | |
ff39bb5e | 1614 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1615 | struct dwarf2_cu *); |
c906108c | 1616 | |
f792889a | 1617 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1618 | |
673bfd45 DE |
1619 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1620 | ||
0d5cff50 | 1621 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1622 | |
6e70227d | 1623 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1624 | const char *suffix, int physname, |
1625 | struct dwarf2_cu *cu); | |
63d06c5c | 1626 | |
e7c27a73 | 1627 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1628 | |
348e048f DE |
1629 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1630 | ||
e7c27a73 | 1631 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1632 | |
e7c27a73 | 1633 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1634 | |
96408a79 SA |
1635 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1636 | ||
ff013f42 JK |
1637 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1638 | struct dwarf2_cu *, struct partial_symtab *); | |
1639 | ||
3a2b436a | 1640 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1641 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1642 | enum pc_bounds_kind |
1643 | { | |
e385593e | 1644 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1645 | PC_BOUNDS_NOT_PRESENT, |
1646 | ||
e385593e JK |
1647 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1648 | were present but they do not form a valid range of PC addresses. */ | |
1649 | PC_BOUNDS_INVALID, | |
1650 | ||
3a2b436a JK |
1651 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1652 | PC_BOUNDS_RANGES, | |
1653 | ||
1654 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1655 | PC_BOUNDS_HIGH_LOW, | |
1656 | }; | |
1657 | ||
1658 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1659 | CORE_ADDR *, CORE_ADDR *, | |
1660 | struct dwarf2_cu *, | |
1661 | struct partial_symtab *); | |
c906108c | 1662 | |
fae299cd DC |
1663 | static void get_scope_pc_bounds (struct die_info *, |
1664 | CORE_ADDR *, CORE_ADDR *, | |
1665 | struct dwarf2_cu *); | |
1666 | ||
801e3a5b JB |
1667 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1668 | CORE_ADDR, struct dwarf2_cu *); | |
1669 | ||
a14ed312 | 1670 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1671 | struct dwarf2_cu *); |
c906108c | 1672 | |
a14ed312 | 1673 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1674 | struct type *, struct dwarf2_cu *); |
c906108c | 1675 | |
a14ed312 | 1676 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1677 | struct die_info *, struct type *, |
e7c27a73 | 1678 | struct dwarf2_cu *); |
c906108c | 1679 | |
a14ed312 | 1680 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1681 | struct type *, |
1682 | struct dwarf2_cu *); | |
c906108c | 1683 | |
134d01f1 | 1684 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1685 | |
e7c27a73 | 1686 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1687 | |
e7c27a73 | 1688 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1689 | |
5d7cb8df JK |
1690 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1691 | ||
22cee43f PMR |
1692 | static struct using_direct **using_directives (enum language); |
1693 | ||
27aa8d6a SW |
1694 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1695 | ||
74921315 KS |
1696 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1697 | ||
f55ee35c JK |
1698 | static struct type *read_module_type (struct die_info *die, |
1699 | struct dwarf2_cu *cu); | |
1700 | ||
38d518c9 | 1701 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1702 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1703 | |
134d01f1 | 1704 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1705 | |
e7c27a73 | 1706 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1707 | |
6e70227d | 1708 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1709 | struct dwarf2_cu *); |
1710 | ||
bf6af496 | 1711 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1712 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1713 | struct die_info *); |
639d11d3 | 1714 | |
dee91e82 | 1715 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1716 | const gdb_byte *info_ptr, |
1717 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1718 | struct die_info *parent); |
1719 | ||
d521ce57 TT |
1720 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1721 | struct die_info **, const gdb_byte *, | |
1722 | int *, int); | |
3019eac3 | 1723 | |
d521ce57 TT |
1724 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1725 | struct die_info **, const gdb_byte *, | |
1726 | int *); | |
93311388 | 1727 | |
e7c27a73 | 1728 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1729 | |
15d034d0 TT |
1730 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1731 | struct obstack *); | |
71c25dea | 1732 | |
15d034d0 | 1733 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1734 | |
15d034d0 | 1735 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1736 | struct die_info *die, |
1737 | struct dwarf2_cu *cu); | |
1738 | ||
ca69b9e6 DE |
1739 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1740 | struct dwarf2_cu *cu); | |
1741 | ||
e142c38c | 1742 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1743 | struct dwarf2_cu **); |
9219021c | 1744 | |
f39c6ffd | 1745 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1746 | |
f39c6ffd | 1747 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1748 | |
f39c6ffd | 1749 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1750 | |
a14ed312 | 1751 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1752 | |
f39c6ffd | 1753 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1754 | |
f9aca02d | 1755 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1756 | |
d97bc12b DE |
1757 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1758 | ||
1759 | static void dump_die_for_error (struct die_info *); | |
1760 | ||
1761 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1762 | struct die_info *); | |
c906108c | 1763 | |
d97bc12b | 1764 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1765 | |
51545339 | 1766 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1767 | struct dwarf2_cu *); |
c906108c | 1768 | |
ff39bb5e | 1769 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1770 | |
ff39bb5e | 1771 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1772 | |
348e048f | 1773 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1774 | const struct attribute *, |
348e048f DE |
1775 | struct dwarf2_cu **); |
1776 | ||
10b3939b | 1777 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1778 | const struct attribute *, |
f2f0e013 | 1779 | struct dwarf2_cu **); |
c906108c | 1780 | |
348e048f | 1781 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1782 | const struct attribute *, |
348e048f DE |
1783 | struct dwarf2_cu **); |
1784 | ||
ac9ec31b DE |
1785 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1786 | struct dwarf2_cu *); | |
1787 | ||
1788 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1789 | const struct attribute *, |
ac9ec31b DE |
1790 | struct dwarf2_cu *); |
1791 | ||
e5fe5e75 | 1792 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1793 | |
52dc124a | 1794 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1795 | |
63e43d3a PMR |
1796 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1797 | struct die_info *die, struct dwarf2_cu *cu, | |
1798 | struct dynamic_prop *prop); | |
1799 | ||
c906108c SS |
1800 | /* memory allocation interface */ |
1801 | ||
7b5a2f43 | 1802 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1803 | |
b60c80d6 | 1804 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1805 | |
43f3e411 | 1806 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1807 | |
6e5a29e1 | 1808 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1809 | |
6e5a29e1 | 1810 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1811 | |
6e5a29e1 | 1812 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1813 | |
6e5a29e1 | 1814 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1815 | |
8cf6f0b1 TT |
1816 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1817 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1818 | const struct attribute *attr); |
8cf6f0b1 | 1819 | |
ff39bb5e | 1820 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1821 | struct symbol *sym, |
f1e6e072 TT |
1822 | struct dwarf2_cu *cu, |
1823 | int is_block); | |
4c2df51b | 1824 | |
d521ce57 TT |
1825 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1826 | const gdb_byte *info_ptr, | |
1827 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1828 | |
72bf9492 DJ |
1829 | static void free_stack_comp_unit (void *); |
1830 | ||
72bf9492 DJ |
1831 | static hashval_t partial_die_hash (const void *item); |
1832 | ||
1833 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1834 | ||
ae038cb0 | 1835 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1836 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1837 | |
9816fde3 | 1838 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1839 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1840 | |
1841 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1842 | struct die_info *comp_unit_die, |
1843 | enum language pretend_language); | |
93311388 | 1844 | |
68dc6402 | 1845 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1846 | |
1847 | static void free_cached_comp_units (void *); | |
1848 | ||
1849 | static void age_cached_comp_units (void); | |
1850 | ||
dee91e82 | 1851 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1852 | |
f792889a DJ |
1853 | static struct type *set_die_type (struct die_info *, struct type *, |
1854 | struct dwarf2_cu *); | |
1c379e20 | 1855 | |
ae038cb0 DJ |
1856 | static void create_all_comp_units (struct objfile *); |
1857 | ||
0e50663e | 1858 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1859 | |
95554aad TT |
1860 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1861 | enum language); | |
10b3939b | 1862 | |
95554aad TT |
1863 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1864 | enum language); | |
10b3939b | 1865 | |
f4dc4d17 DE |
1866 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1867 | enum language); | |
1868 | ||
10b3939b DJ |
1869 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1870 | struct dwarf2_per_cu_data *); | |
1871 | ||
ae038cb0 DJ |
1872 | static void dwarf2_mark (struct dwarf2_cu *); |
1873 | ||
1874 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1875 | ||
b64f50a1 | 1876 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1877 | struct dwarf2_per_cu_data *); |
673bfd45 | 1878 | |
f792889a | 1879 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1880 | |
9291a0cd TT |
1881 | static void dwarf2_release_queue (void *dummy); |
1882 | ||
95554aad TT |
1883 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1884 | enum language pretend_language); | |
1885 | ||
a0f42c21 | 1886 | static void process_queue (void); |
9291a0cd TT |
1887 | |
1888 | static void find_file_and_directory (struct die_info *die, | |
1889 | struct dwarf2_cu *cu, | |
15d034d0 | 1890 | const char **name, const char **comp_dir); |
9291a0cd TT |
1891 | |
1892 | static char *file_full_name (int file, struct line_header *lh, | |
1893 | const char *comp_dir); | |
1894 | ||
43988095 JK |
1895 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1896 | enum class rcuh_kind { COMPILE, TYPE }; | |
1897 | ||
d521ce57 | 1898 | static const gdb_byte *read_and_check_comp_unit_head |
36586728 TT |
1899 | (struct comp_unit_head *header, |
1900 | struct dwarf2_section_info *section, | |
d521ce57 | 1901 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 1902 | rcuh_kind section_kind); |
36586728 | 1903 | |
fd820528 | 1904 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1905 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1906 | int use_existing_cu, int keep, | |
3019eac3 DE |
1907 | die_reader_func_ftype *die_reader_func, void *data); |
1908 | ||
dee91e82 DE |
1909 | static void init_cutu_and_read_dies_simple |
1910 | (struct dwarf2_per_cu_data *this_cu, | |
1911 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1912 | |
673bfd45 | 1913 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1914 | |
3019eac3 DE |
1915 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1916 | ||
57d63ce2 DE |
1917 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
1918 | (struct dwp_file *dwp_file, const char *comp_dir, | |
1919 | ULONGEST signature, int is_debug_types); | |
a2ce51a0 DE |
1920 | |
1921 | static struct dwp_file *get_dwp_file (void); | |
1922 | ||
3019eac3 | 1923 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1924 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1925 | |
1926 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1927 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1928 | |
89e63ee4 DE |
1929 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1930 | ||
3019eac3 DE |
1931 | static void free_dwo_file_cleanup (void *); |
1932 | ||
95554aad TT |
1933 | static void process_cu_includes (void); |
1934 | ||
1b80a9fa | 1935 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1936 | |
1937 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1938 | \f |
1939 | /* Various complaints about symbol reading that don't abort the process. */ | |
1940 | ||
1941 | static void | |
1942 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1943 | { | |
1944 | complaint (&symfile_complaints, | |
1945 | _("statement list doesn't fit in .debug_line section")); | |
1946 | } | |
1947 | ||
1948 | static void | |
1949 | dwarf2_debug_line_missing_file_complaint (void) | |
1950 | { | |
1951 | complaint (&symfile_complaints, | |
1952 | _(".debug_line section has line data without a file")); | |
1953 | } | |
1954 | ||
1955 | static void | |
1956 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1957 | { | |
1958 | complaint (&symfile_complaints, | |
1959 | _(".debug_line section has line " | |
1960 | "program sequence without an end")); | |
1961 | } | |
1962 | ||
1963 | static void | |
1964 | dwarf2_complex_location_expr_complaint (void) | |
1965 | { | |
1966 | complaint (&symfile_complaints, _("location expression too complex")); | |
1967 | } | |
1968 | ||
1969 | static void | |
1970 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1971 | int arg3) | |
1972 | { | |
1973 | complaint (&symfile_complaints, | |
1974 | _("const value length mismatch for '%s', got %d, expected %d"), | |
1975 | arg1, arg2, arg3); | |
1976 | } | |
1977 | ||
1978 | static void | |
1979 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1980 | { | |
1981 | complaint (&symfile_complaints, | |
1982 | _("debug info runs off end of %s section" | |
1983 | " [in module %s]"), | |
a32a8923 DE |
1984 | get_section_name (section), |
1985 | get_section_file_name (section)); | |
4390d890 | 1986 | } |
1b80a9fa | 1987 | |
4390d890 DE |
1988 | static void |
1989 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1990 | { | |
1991 | complaint (&symfile_complaints, | |
1992 | _("macro debug info contains a " | |
1993 | "malformed macro definition:\n`%s'"), | |
1994 | arg1); | |
1995 | } | |
1996 | ||
1997 | static void | |
1998 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1999 | { | |
2000 | complaint (&symfile_complaints, | |
2001 | _("invalid attribute class or form for '%s' in '%s'"), | |
2002 | arg1, arg2); | |
2003 | } | |
527f3840 JK |
2004 | |
2005 | /* Hash function for line_header_hash. */ | |
2006 | ||
2007 | static hashval_t | |
2008 | line_header_hash (const struct line_header *ofs) | |
2009 | { | |
2010 | return ofs->offset.sect_off ^ ofs->offset_in_dwz; | |
2011 | } | |
2012 | ||
2013 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2014 | ||
2015 | static hashval_t | |
2016 | line_header_hash_voidp (const void *item) | |
2017 | { | |
9a3c8263 | 2018 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2019 | |
2020 | return line_header_hash (ofs); | |
2021 | } | |
2022 | ||
2023 | /* Equality function for line_header_hash. */ | |
2024 | ||
2025 | static int | |
2026 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2027 | { | |
9a3c8263 SM |
2028 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2029 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 JK |
2030 | |
2031 | return (ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off | |
2032 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); | |
2033 | } | |
2034 | ||
4390d890 | 2035 | \f |
9291a0cd TT |
2036 | #if WORDS_BIGENDIAN |
2037 | ||
2038 | /* Convert VALUE between big- and little-endian. */ | |
2039 | static offset_type | |
2040 | byte_swap (offset_type value) | |
2041 | { | |
2042 | offset_type result; | |
2043 | ||
2044 | result = (value & 0xff) << 24; | |
2045 | result |= (value & 0xff00) << 8; | |
2046 | result |= (value & 0xff0000) >> 8; | |
2047 | result |= (value & 0xff000000) >> 24; | |
2048 | return result; | |
2049 | } | |
2050 | ||
2051 | #define MAYBE_SWAP(V) byte_swap (V) | |
2052 | ||
2053 | #else | |
2054 | #define MAYBE_SWAP(V) (V) | |
2055 | #endif /* WORDS_BIGENDIAN */ | |
2056 | ||
31aa7e4e JB |
2057 | /* Read the given attribute value as an address, taking the attribute's |
2058 | form into account. */ | |
2059 | ||
2060 | static CORE_ADDR | |
2061 | attr_value_as_address (struct attribute *attr) | |
2062 | { | |
2063 | CORE_ADDR addr; | |
2064 | ||
2065 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2066 | { | |
2067 | /* Aside from a few clearly defined exceptions, attributes that | |
2068 | contain an address must always be in DW_FORM_addr form. | |
2069 | Unfortunately, some compilers happen to be violating this | |
2070 | requirement by encoding addresses using other forms, such | |
2071 | as DW_FORM_data4 for example. For those broken compilers, | |
2072 | we try to do our best, without any guarantee of success, | |
2073 | to interpret the address correctly. It would also be nice | |
2074 | to generate a complaint, but that would require us to maintain | |
2075 | a list of legitimate cases where a non-address form is allowed, | |
2076 | as well as update callers to pass in at least the CU's DWARF | |
2077 | version. This is more overhead than what we're willing to | |
2078 | expand for a pretty rare case. */ | |
2079 | addr = DW_UNSND (attr); | |
2080 | } | |
2081 | else | |
2082 | addr = DW_ADDR (attr); | |
2083 | ||
2084 | return addr; | |
2085 | } | |
2086 | ||
9291a0cd TT |
2087 | /* The suffix for an index file. */ |
2088 | #define INDEX_SUFFIX ".gdb-index" | |
2089 | ||
c906108c | 2090 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2091 | information and return true if we have enough to do something. |
2092 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2093 | ELF names are used. */ | |
c906108c SS |
2094 | |
2095 | int | |
251d32d9 TG |
2096 | dwarf2_has_info (struct objfile *objfile, |
2097 | const struct dwarf2_debug_sections *names) | |
c906108c | 2098 | { |
9a3c8263 SM |
2099 | dwarf2_per_objfile = ((struct dwarf2_per_objfile *) |
2100 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
be391dca TT |
2101 | if (!dwarf2_per_objfile) |
2102 | { | |
2103 | /* Initialize per-objfile state. */ | |
2104 | struct dwarf2_per_objfile *data | |
8d749320 | 2105 | = XOBNEW (&objfile->objfile_obstack, struct dwarf2_per_objfile); |
9a619af0 | 2106 | |
be391dca TT |
2107 | memset (data, 0, sizeof (*data)); |
2108 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
2109 | dwarf2_per_objfile = data; | |
6502dd73 | 2110 | |
251d32d9 TG |
2111 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
2112 | (void *) names); | |
be391dca TT |
2113 | dwarf2_per_objfile->objfile = objfile; |
2114 | } | |
73869dc2 | 2115 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2116 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2117 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2118 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2119 | } |
2120 | ||
2121 | /* Return the containing section of virtual section SECTION. */ | |
2122 | ||
2123 | static struct dwarf2_section_info * | |
2124 | get_containing_section (const struct dwarf2_section_info *section) | |
2125 | { | |
2126 | gdb_assert (section->is_virtual); | |
2127 | return section->s.containing_section; | |
c906108c SS |
2128 | } |
2129 | ||
a32a8923 DE |
2130 | /* Return the bfd owner of SECTION. */ |
2131 | ||
2132 | static struct bfd * | |
2133 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2134 | { | |
73869dc2 DE |
2135 | if (section->is_virtual) |
2136 | { | |
2137 | section = get_containing_section (section); | |
2138 | gdb_assert (!section->is_virtual); | |
2139 | } | |
049412e3 | 2140 | return section->s.section->owner; |
a32a8923 DE |
2141 | } |
2142 | ||
2143 | /* Return the bfd section of SECTION. | |
2144 | Returns NULL if the section is not present. */ | |
2145 | ||
2146 | static asection * | |
2147 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2148 | { | |
73869dc2 DE |
2149 | if (section->is_virtual) |
2150 | { | |
2151 | section = get_containing_section (section); | |
2152 | gdb_assert (!section->is_virtual); | |
2153 | } | |
049412e3 | 2154 | return section->s.section; |
a32a8923 DE |
2155 | } |
2156 | ||
2157 | /* Return the name of SECTION. */ | |
2158 | ||
2159 | static const char * | |
2160 | get_section_name (const struct dwarf2_section_info *section) | |
2161 | { | |
2162 | asection *sectp = get_section_bfd_section (section); | |
2163 | ||
2164 | gdb_assert (sectp != NULL); | |
2165 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2166 | } | |
2167 | ||
2168 | /* Return the name of the file SECTION is in. */ | |
2169 | ||
2170 | static const char * | |
2171 | get_section_file_name (const struct dwarf2_section_info *section) | |
2172 | { | |
2173 | bfd *abfd = get_section_bfd_owner (section); | |
2174 | ||
2175 | return bfd_get_filename (abfd); | |
2176 | } | |
2177 | ||
2178 | /* Return the id of SECTION. | |
2179 | Returns 0 if SECTION doesn't exist. */ | |
2180 | ||
2181 | static int | |
2182 | get_section_id (const struct dwarf2_section_info *section) | |
2183 | { | |
2184 | asection *sectp = get_section_bfd_section (section); | |
2185 | ||
2186 | if (sectp == NULL) | |
2187 | return 0; | |
2188 | return sectp->id; | |
2189 | } | |
2190 | ||
2191 | /* Return the flags of SECTION. | |
73869dc2 | 2192 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2193 | |
2194 | static int | |
2195 | get_section_flags (const struct dwarf2_section_info *section) | |
2196 | { | |
2197 | asection *sectp = get_section_bfd_section (section); | |
2198 | ||
2199 | gdb_assert (sectp != NULL); | |
2200 | return bfd_get_section_flags (sectp->owner, sectp); | |
2201 | } | |
2202 | ||
251d32d9 TG |
2203 | /* When loading sections, we look either for uncompressed section or for |
2204 | compressed section names. */ | |
233a11ab CS |
2205 | |
2206 | static int | |
251d32d9 TG |
2207 | section_is_p (const char *section_name, |
2208 | const struct dwarf2_section_names *names) | |
233a11ab | 2209 | { |
251d32d9 TG |
2210 | if (names->normal != NULL |
2211 | && strcmp (section_name, names->normal) == 0) | |
2212 | return 1; | |
2213 | if (names->compressed != NULL | |
2214 | && strcmp (section_name, names->compressed) == 0) | |
2215 | return 1; | |
2216 | return 0; | |
233a11ab CS |
2217 | } |
2218 | ||
c906108c SS |
2219 | /* This function is mapped across the sections and remembers the |
2220 | offset and size of each of the debugging sections we are interested | |
2221 | in. */ | |
2222 | ||
2223 | static void | |
251d32d9 | 2224 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 2225 | { |
251d32d9 | 2226 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 2227 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
2228 | |
2229 | if (vnames == NULL) | |
2230 | names = &dwarf2_elf_names; | |
2231 | else | |
2232 | names = (const struct dwarf2_debug_sections *) vnames; | |
2233 | ||
dc7650b8 JK |
2234 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2235 | { | |
2236 | } | |
2237 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 2238 | { |
049412e3 | 2239 | dwarf2_per_objfile->info.s.section = sectp; |
dce234bc | 2240 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); |
c906108c | 2241 | } |
251d32d9 | 2242 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 2243 | { |
049412e3 | 2244 | dwarf2_per_objfile->abbrev.s.section = sectp; |
dce234bc | 2245 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); |
c906108c | 2246 | } |
251d32d9 | 2247 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 2248 | { |
049412e3 | 2249 | dwarf2_per_objfile->line.s.section = sectp; |
dce234bc | 2250 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); |
c906108c | 2251 | } |
251d32d9 | 2252 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 2253 | { |
049412e3 | 2254 | dwarf2_per_objfile->loc.s.section = sectp; |
dce234bc | 2255 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); |
c906108c | 2256 | } |
43988095 JK |
2257 | else if (section_is_p (sectp->name, &names->loclists)) |
2258 | { | |
2259 | dwarf2_per_objfile->loclists.s.section = sectp; | |
2260 | dwarf2_per_objfile->loclists.size = bfd_get_section_size (sectp); | |
2261 | } | |
251d32d9 | 2262 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 2263 | { |
049412e3 | 2264 | dwarf2_per_objfile->macinfo.s.section = sectp; |
dce234bc | 2265 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); |
c906108c | 2266 | } |
cf2c3c16 TT |
2267 | else if (section_is_p (sectp->name, &names->macro)) |
2268 | { | |
049412e3 | 2269 | dwarf2_per_objfile->macro.s.section = sectp; |
cf2c3c16 TT |
2270 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); |
2271 | } | |
251d32d9 | 2272 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 2273 | { |
049412e3 | 2274 | dwarf2_per_objfile->str.s.section = sectp; |
dce234bc | 2275 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); |
c906108c | 2276 | } |
43988095 JK |
2277 | else if (section_is_p (sectp->name, &names->line_str)) |
2278 | { | |
2279 | dwarf2_per_objfile->line_str.s.section = sectp; | |
2280 | dwarf2_per_objfile->line_str.size = bfd_get_section_size (sectp); | |
2281 | } | |
3019eac3 DE |
2282 | else if (section_is_p (sectp->name, &names->addr)) |
2283 | { | |
049412e3 | 2284 | dwarf2_per_objfile->addr.s.section = sectp; |
3019eac3 DE |
2285 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); |
2286 | } | |
251d32d9 | 2287 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 2288 | { |
049412e3 | 2289 | dwarf2_per_objfile->frame.s.section = sectp; |
dce234bc | 2290 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2291 | } |
251d32d9 | 2292 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 2293 | { |
049412e3 | 2294 | dwarf2_per_objfile->eh_frame.s.section = sectp; |
dc7650b8 | 2295 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2296 | } |
251d32d9 | 2297 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 2298 | { |
049412e3 | 2299 | dwarf2_per_objfile->ranges.s.section = sectp; |
dce234bc | 2300 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); |
af34e669 | 2301 | } |
43988095 JK |
2302 | else if (section_is_p (sectp->name, &names->rnglists)) |
2303 | { | |
2304 | dwarf2_per_objfile->rnglists.s.section = sectp; | |
2305 | dwarf2_per_objfile->rnglists.size = bfd_get_section_size (sectp); | |
2306 | } | |
251d32d9 | 2307 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 2308 | { |
8b70b953 TT |
2309 | struct dwarf2_section_info type_section; |
2310 | ||
2311 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2312 | type_section.s.section = sectp; |
8b70b953 TT |
2313 | type_section.size = bfd_get_section_size (sectp); |
2314 | ||
2315 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
2316 | &type_section); | |
348e048f | 2317 | } |
251d32d9 | 2318 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd | 2319 | { |
049412e3 | 2320 | dwarf2_per_objfile->gdb_index.s.section = sectp; |
9291a0cd TT |
2321 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); |
2322 | } | |
dce234bc | 2323 | |
b4e1fd61 | 2324 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 FR |
2325 | && bfd_section_vma (abfd, sectp) == 0) |
2326 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
2327 | } |
2328 | ||
fceca515 DE |
2329 | /* A helper function that decides whether a section is empty, |
2330 | or not present. */ | |
9e0ac564 TT |
2331 | |
2332 | static int | |
19ac8c2e | 2333 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2334 | { |
73869dc2 DE |
2335 | if (section->is_virtual) |
2336 | return section->size == 0; | |
049412e3 | 2337 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2338 | } |
2339 | ||
3019eac3 DE |
2340 | /* Read the contents of the section INFO. |
2341 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2342 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2343 | of the DWO file. | |
dce234bc | 2344 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2345 | |
dce234bc PP |
2346 | static void |
2347 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2348 | { |
a32a8923 | 2349 | asection *sectp; |
3019eac3 | 2350 | bfd *abfd; |
dce234bc | 2351 | gdb_byte *buf, *retbuf; |
c906108c | 2352 | |
be391dca TT |
2353 | if (info->readin) |
2354 | return; | |
dce234bc | 2355 | info->buffer = NULL; |
be391dca | 2356 | info->readin = 1; |
188dd5d6 | 2357 | |
9e0ac564 | 2358 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2359 | return; |
c906108c | 2360 | |
a32a8923 | 2361 | sectp = get_section_bfd_section (info); |
3019eac3 | 2362 | |
73869dc2 DE |
2363 | /* If this is a virtual section we need to read in the real one first. */ |
2364 | if (info->is_virtual) | |
2365 | { | |
2366 | struct dwarf2_section_info *containing_section = | |
2367 | get_containing_section (info); | |
2368 | ||
2369 | gdb_assert (sectp != NULL); | |
2370 | if ((sectp->flags & SEC_RELOC) != 0) | |
2371 | { | |
2372 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2373 | " supported in section %s [in module %s]"), | |
2374 | get_section_name (info), get_section_file_name (info)); | |
2375 | } | |
2376 | dwarf2_read_section (objfile, containing_section); | |
2377 | /* Other code should have already caught virtual sections that don't | |
2378 | fit. */ | |
2379 | gdb_assert (info->virtual_offset + info->size | |
2380 | <= containing_section->size); | |
2381 | /* If the real section is empty or there was a problem reading the | |
2382 | section we shouldn't get here. */ | |
2383 | gdb_assert (containing_section->buffer != NULL); | |
2384 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2385 | return; | |
2386 | } | |
2387 | ||
4bf44c1c TT |
2388 | /* If the section has relocations, we must read it ourselves. |
2389 | Otherwise we attach it to the BFD. */ | |
2390 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2391 | { |
d521ce57 | 2392 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2393 | return; |
dce234bc | 2394 | } |
dce234bc | 2395 | |
224c3ddb | 2396 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2397 | info->buffer = buf; |
dce234bc PP |
2398 | |
2399 | /* When debugging .o files, we may need to apply relocations; see | |
2400 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2401 | We never compress sections in .o files, so we only need to | |
2402 | try this when the section is not compressed. */ | |
ac8035ab | 2403 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2404 | if (retbuf != NULL) |
2405 | { | |
2406 | info->buffer = retbuf; | |
2407 | return; | |
2408 | } | |
2409 | ||
a32a8923 DE |
2410 | abfd = get_section_bfd_owner (info); |
2411 | gdb_assert (abfd != NULL); | |
2412 | ||
dce234bc PP |
2413 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2414 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2415 | { |
2416 | error (_("Dwarf Error: Can't read DWARF data" | |
2417 | " in section %s [in module %s]"), | |
2418 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2419 | } | |
dce234bc PP |
2420 | } |
2421 | ||
9e0ac564 TT |
2422 | /* A helper function that returns the size of a section in a safe way. |
2423 | If you are positive that the section has been read before using the | |
2424 | size, then it is safe to refer to the dwarf2_section_info object's | |
2425 | "size" field directly. In other cases, you must call this | |
2426 | function, because for compressed sections the size field is not set | |
2427 | correctly until the section has been read. */ | |
2428 | ||
2429 | static bfd_size_type | |
2430 | dwarf2_section_size (struct objfile *objfile, | |
2431 | struct dwarf2_section_info *info) | |
2432 | { | |
2433 | if (!info->readin) | |
2434 | dwarf2_read_section (objfile, info); | |
2435 | return info->size; | |
2436 | } | |
2437 | ||
dce234bc | 2438 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2439 | SECTION_NAME. */ |
af34e669 | 2440 | |
dce234bc | 2441 | void |
3017a003 TG |
2442 | dwarf2_get_section_info (struct objfile *objfile, |
2443 | enum dwarf2_section_enum sect, | |
d521ce57 | 2444 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2445 | bfd_size_type *sizep) |
2446 | { | |
2447 | struct dwarf2_per_objfile *data | |
9a3c8263 SM |
2448 | = (struct dwarf2_per_objfile *) objfile_data (objfile, |
2449 | dwarf2_objfile_data_key); | |
dce234bc | 2450 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2451 | |
2452 | /* We may see an objfile without any DWARF, in which case we just | |
2453 | return nothing. */ | |
2454 | if (data == NULL) | |
2455 | { | |
2456 | *sectp = NULL; | |
2457 | *bufp = NULL; | |
2458 | *sizep = 0; | |
2459 | return; | |
2460 | } | |
3017a003 TG |
2461 | switch (sect) |
2462 | { | |
2463 | case DWARF2_DEBUG_FRAME: | |
2464 | info = &data->frame; | |
2465 | break; | |
2466 | case DWARF2_EH_FRAME: | |
2467 | info = &data->eh_frame; | |
2468 | break; | |
2469 | default: | |
2470 | gdb_assert_not_reached ("unexpected section"); | |
2471 | } | |
dce234bc | 2472 | |
9e0ac564 | 2473 | dwarf2_read_section (objfile, info); |
dce234bc | 2474 | |
a32a8923 | 2475 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2476 | *bufp = info->buffer; |
2477 | *sizep = info->size; | |
2478 | } | |
2479 | ||
36586728 TT |
2480 | /* A helper function to find the sections for a .dwz file. */ |
2481 | ||
2482 | static void | |
2483 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2484 | { | |
9a3c8263 | 2485 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2486 | |
2487 | /* Note that we only support the standard ELF names, because .dwz | |
2488 | is ELF-only (at the time of writing). */ | |
2489 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2490 | { | |
049412e3 | 2491 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2492 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2493 | } | |
2494 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2495 | { | |
049412e3 | 2496 | dwz_file->info.s.section = sectp; |
36586728 TT |
2497 | dwz_file->info.size = bfd_get_section_size (sectp); |
2498 | } | |
2499 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2500 | { | |
049412e3 | 2501 | dwz_file->str.s.section = sectp; |
36586728 TT |
2502 | dwz_file->str.size = bfd_get_section_size (sectp); |
2503 | } | |
2504 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2505 | { | |
049412e3 | 2506 | dwz_file->line.s.section = sectp; |
36586728 TT |
2507 | dwz_file->line.size = bfd_get_section_size (sectp); |
2508 | } | |
2509 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2510 | { | |
049412e3 | 2511 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2512 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2513 | } | |
2ec9a5e0 TT |
2514 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2515 | { | |
049412e3 | 2516 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2517 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2518 | } | |
36586728 TT |
2519 | } |
2520 | ||
4db1a1dc TT |
2521 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2522 | there is no .gnu_debugaltlink section in the file. Error if there | |
2523 | is such a section but the file cannot be found. */ | |
36586728 TT |
2524 | |
2525 | static struct dwz_file * | |
2526 | dwarf2_get_dwz_file (void) | |
2527 | { | |
4db1a1dc | 2528 | char *data; |
36586728 TT |
2529 | struct cleanup *cleanup; |
2530 | const char *filename; | |
2531 | struct dwz_file *result; | |
acd13123 | 2532 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2533 | size_t buildid_len; |
2534 | bfd_byte *buildid; | |
36586728 TT |
2535 | |
2536 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2537 | return dwarf2_per_objfile->dwz_file; | |
2538 | ||
4db1a1dc TT |
2539 | bfd_set_error (bfd_error_no_error); |
2540 | data = bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
acd13123 | 2541 | &buildid_len_arg, &buildid); |
4db1a1dc TT |
2542 | if (data == NULL) |
2543 | { | |
2544 | if (bfd_get_error () == bfd_error_no_error) | |
2545 | return NULL; | |
2546 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2547 | bfd_errmsg (bfd_get_error ())); | |
2548 | } | |
36586728 | 2549 | cleanup = make_cleanup (xfree, data); |
dc294be5 | 2550 | make_cleanup (xfree, buildid); |
36586728 | 2551 | |
acd13123 TT |
2552 | buildid_len = (size_t) buildid_len_arg; |
2553 | ||
f9d83a0b | 2554 | filename = (const char *) data; |
36586728 TT |
2555 | if (!IS_ABSOLUTE_PATH (filename)) |
2556 | { | |
4262abfb | 2557 | char *abs = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); |
36586728 TT |
2558 | char *rel; |
2559 | ||
2560 | make_cleanup (xfree, abs); | |
2561 | abs = ldirname (abs); | |
2562 | make_cleanup (xfree, abs); | |
2563 | ||
2564 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2565 | make_cleanup (xfree, rel); | |
2566 | filename = rel; | |
2567 | } | |
2568 | ||
dc294be5 TT |
2569 | /* First try the file name given in the section. If that doesn't |
2570 | work, try to use the build-id instead. */ | |
192b62ce | 2571 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2572 | if (dwz_bfd != NULL) |
36586728 | 2573 | { |
192b62ce TT |
2574 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
2575 | dwz_bfd.release (); | |
36586728 TT |
2576 | } |
2577 | ||
dc294be5 TT |
2578 | if (dwz_bfd == NULL) |
2579 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2580 | ||
2581 | if (dwz_bfd == NULL) | |
2582 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2583 | objfile_name (dwarf2_per_objfile->objfile)); | |
2584 | ||
36586728 TT |
2585 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
2586 | struct dwz_file); | |
192b62ce | 2587 | result->dwz_bfd = dwz_bfd.release (); |
36586728 | 2588 | |
192b62ce | 2589 | bfd_map_over_sections (result->dwz_bfd, locate_dwz_sections, result); |
36586728 TT |
2590 | |
2591 | do_cleanups (cleanup); | |
2592 | ||
192b62ce | 2593 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, result->dwz_bfd); |
8d2cc612 | 2594 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2595 | return result; |
2596 | } | |
9291a0cd | 2597 | \f |
7b9f3c50 DE |
2598 | /* DWARF quick_symbols_functions support. */ |
2599 | ||
2600 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2601 | unique line tables, so we maintain a separate table of all .debug_line | |
2602 | derived entries to support the sharing. | |
2603 | All the quick functions need is the list of file names. We discard the | |
2604 | line_header when we're done and don't need to record it here. */ | |
2605 | struct quick_file_names | |
2606 | { | |
094b34ac DE |
2607 | /* The data used to construct the hash key. */ |
2608 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2609 | |
2610 | /* The number of entries in file_names, real_names. */ | |
2611 | unsigned int num_file_names; | |
2612 | ||
2613 | /* The file names from the line table, after being run through | |
2614 | file_full_name. */ | |
2615 | const char **file_names; | |
2616 | ||
2617 | /* The file names from the line table after being run through | |
2618 | gdb_realpath. These are computed lazily. */ | |
2619 | const char **real_names; | |
2620 | }; | |
2621 | ||
2622 | /* When using the index (and thus not using psymtabs), each CU has an | |
2623 | object of this type. This is used to hold information needed by | |
2624 | the various "quick" methods. */ | |
2625 | struct dwarf2_per_cu_quick_data | |
2626 | { | |
2627 | /* The file table. This can be NULL if there was no file table | |
2628 | or it's currently not read in. | |
2629 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2630 | struct quick_file_names *file_names; | |
2631 | ||
2632 | /* The corresponding symbol table. This is NULL if symbols for this | |
2633 | CU have not yet been read. */ | |
43f3e411 | 2634 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2635 | |
2636 | /* A temporary mark bit used when iterating over all CUs in | |
2637 | expand_symtabs_matching. */ | |
2638 | unsigned int mark : 1; | |
2639 | ||
2640 | /* True if we've tried to read the file table and found there isn't one. | |
2641 | There will be no point in trying to read it again next time. */ | |
2642 | unsigned int no_file_data : 1; | |
2643 | }; | |
2644 | ||
094b34ac DE |
2645 | /* Utility hash function for a stmt_list_hash. */ |
2646 | ||
2647 | static hashval_t | |
2648 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2649 | { | |
2650 | hashval_t v = 0; | |
2651 | ||
2652 | if (stmt_list_hash->dwo_unit != NULL) | |
2653 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2654 | v += stmt_list_hash->line_offset.sect_off; | |
2655 | return v; | |
2656 | } | |
2657 | ||
2658 | /* Utility equality function for a stmt_list_hash. */ | |
2659 | ||
2660 | static int | |
2661 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2662 | const struct stmt_list_hash *rhs) | |
2663 | { | |
2664 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2665 | return 0; | |
2666 | if (lhs->dwo_unit != NULL | |
2667 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2668 | return 0; | |
2669 | ||
2670 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2671 | } | |
2672 | ||
7b9f3c50 DE |
2673 | /* Hash function for a quick_file_names. */ |
2674 | ||
2675 | static hashval_t | |
2676 | hash_file_name_entry (const void *e) | |
2677 | { | |
9a3c8263 SM |
2678 | const struct quick_file_names *file_data |
2679 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2680 | |
094b34ac | 2681 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2682 | } |
2683 | ||
2684 | /* Equality function for a quick_file_names. */ | |
2685 | ||
2686 | static int | |
2687 | eq_file_name_entry (const void *a, const void *b) | |
2688 | { | |
9a3c8263 SM |
2689 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2690 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2691 | |
094b34ac | 2692 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2693 | } |
2694 | ||
2695 | /* Delete function for a quick_file_names. */ | |
2696 | ||
2697 | static void | |
2698 | delete_file_name_entry (void *e) | |
2699 | { | |
9a3c8263 | 2700 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2701 | int i; |
2702 | ||
2703 | for (i = 0; i < file_data->num_file_names; ++i) | |
2704 | { | |
2705 | xfree ((void*) file_data->file_names[i]); | |
2706 | if (file_data->real_names) | |
2707 | xfree ((void*) file_data->real_names[i]); | |
2708 | } | |
2709 | ||
2710 | /* The space for the struct itself lives on objfile_obstack, | |
2711 | so we don't free it here. */ | |
2712 | } | |
2713 | ||
2714 | /* Create a quick_file_names hash table. */ | |
2715 | ||
2716 | static htab_t | |
2717 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2718 | { | |
2719 | return htab_create_alloc (nr_initial_entries, | |
2720 | hash_file_name_entry, eq_file_name_entry, | |
2721 | delete_file_name_entry, xcalloc, xfree); | |
2722 | } | |
9291a0cd | 2723 | |
918dd910 JK |
2724 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2725 | have to be created afterwards. You should call age_cached_comp_units after | |
2726 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2727 | ||
2728 | static void | |
2729 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2730 | { | |
3019eac3 | 2731 | if (per_cu->is_debug_types) |
e5fe5e75 | 2732 | load_full_type_unit (per_cu); |
918dd910 | 2733 | else |
95554aad | 2734 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2735 | |
cc12ce38 DE |
2736 | if (per_cu->cu == NULL) |
2737 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2738 | |
2739 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2740 | } |
2741 | ||
a0f42c21 | 2742 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2743 | |
9291a0cd | 2744 | static void |
a0f42c21 | 2745 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2746 | { |
2747 | struct cleanup *back_to; | |
2748 | ||
f4dc4d17 DE |
2749 | /* Skip type_unit_groups, reading the type units they contain |
2750 | is handled elsewhere. */ | |
2751 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2752 | return; | |
2753 | ||
9291a0cd TT |
2754 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2755 | ||
95554aad | 2756 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2757 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2758 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2759 | { | |
2760 | queue_comp_unit (per_cu, language_minimal); | |
2761 | load_cu (per_cu); | |
89e63ee4 DE |
2762 | |
2763 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2764 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2765 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2766 | if (!per_cu->is_debug_types | |
cc12ce38 | 2767 | && per_cu->cu != NULL |
89e63ee4 DE |
2768 | && per_cu->cu->dwo_unit != NULL |
2769 | && dwarf2_per_objfile->index_table != NULL | |
2770 | && dwarf2_per_objfile->index_table->version <= 7 | |
2771 | /* DWP files aren't supported yet. */ | |
2772 | && get_dwp_file () == NULL) | |
2773 | queue_and_load_all_dwo_tus (per_cu); | |
95554aad | 2774 | } |
9291a0cd | 2775 | |
a0f42c21 | 2776 | process_queue (); |
9291a0cd TT |
2777 | |
2778 | /* Age the cache, releasing compilation units that have not | |
2779 | been used recently. */ | |
2780 | age_cached_comp_units (); | |
2781 | ||
2782 | do_cleanups (back_to); | |
2783 | } | |
2784 | ||
2785 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2786 | the objfile from which this CU came. Returns the resulting symbol | |
2787 | table. */ | |
2fdf6df6 | 2788 | |
43f3e411 | 2789 | static struct compunit_symtab * |
a0f42c21 | 2790 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2791 | { |
95554aad | 2792 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2793 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
2794 | { |
2795 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2796 | increment_reading_symtab (); | |
a0f42c21 | 2797 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2798 | process_cu_includes (); |
9291a0cd TT |
2799 | do_cleanups (back_to); |
2800 | } | |
f194fefb | 2801 | |
43f3e411 | 2802 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2803 | } |
2804 | ||
8832e7e3 | 2805 | /* Return the CU/TU given its index. |
f4dc4d17 DE |
2806 | |
2807 | This is intended for loops like: | |
2808 | ||
2809 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2810 | + dwarf2_per_objfile->n_type_units); ++i) | |
2811 | { | |
8832e7e3 | 2812 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
f4dc4d17 DE |
2813 | |
2814 | ...; | |
2815 | } | |
2816 | */ | |
2fdf6df6 | 2817 | |
1fd400ff | 2818 | static struct dwarf2_per_cu_data * |
8832e7e3 | 2819 | dw2_get_cutu (int index) |
1fd400ff TT |
2820 | { |
2821 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2822 | { | |
f4dc4d17 | 2823 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2824 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2825 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2826 | } |
2827 | ||
2828 | return dwarf2_per_objfile->all_comp_units[index]; | |
2829 | } | |
2830 | ||
8832e7e3 DE |
2831 | /* Return the CU given its index. |
2832 | This differs from dw2_get_cutu in that it's for when you know INDEX | |
2833 | refers to a CU. */ | |
f4dc4d17 DE |
2834 | |
2835 | static struct dwarf2_per_cu_data * | |
8832e7e3 | 2836 | dw2_get_cu (int index) |
f4dc4d17 | 2837 | { |
8832e7e3 | 2838 | gdb_assert (index >= 0 && index < dwarf2_per_objfile->n_comp_units); |
f4dc4d17 | 2839 | |
1fd400ff TT |
2840 | return dwarf2_per_objfile->all_comp_units[index]; |
2841 | } | |
2842 | ||
2ec9a5e0 TT |
2843 | /* A helper for create_cus_from_index that handles a given list of |
2844 | CUs. */ | |
2fdf6df6 | 2845 | |
74a0d9f6 | 2846 | static void |
2ec9a5e0 TT |
2847 | create_cus_from_index_list (struct objfile *objfile, |
2848 | const gdb_byte *cu_list, offset_type n_elements, | |
2849 | struct dwarf2_section_info *section, | |
2850 | int is_dwz, | |
2851 | int base_offset) | |
9291a0cd TT |
2852 | { |
2853 | offset_type i; | |
9291a0cd | 2854 | |
2ec9a5e0 | 2855 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2856 | { |
2857 | struct dwarf2_per_cu_data *the_cu; | |
2858 | ULONGEST offset, length; | |
2859 | ||
74a0d9f6 JK |
2860 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2861 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2862 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2863 | cu_list += 2 * 8; |
2864 | ||
2865 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2866 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2867 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2868 | the_cu->length = length; |
2869 | the_cu->objfile = objfile; | |
8a0459fd | 2870 | the_cu->section = section; |
9291a0cd TT |
2871 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2872 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2873 | the_cu->is_dwz = is_dwz; |
2874 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2875 | } |
9291a0cd TT |
2876 | } |
2877 | ||
2ec9a5e0 | 2878 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2879 | the CU objects for this objfile. */ |
2ec9a5e0 | 2880 | |
74a0d9f6 | 2881 | static void |
2ec9a5e0 TT |
2882 | create_cus_from_index (struct objfile *objfile, |
2883 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2884 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2885 | { | |
2886 | struct dwz_file *dwz; | |
2887 | ||
2888 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
8d749320 SM |
2889 | dwarf2_per_objfile->all_comp_units = |
2890 | XOBNEWVEC (&objfile->objfile_obstack, struct dwarf2_per_cu_data *, | |
2891 | dwarf2_per_objfile->n_comp_units); | |
2ec9a5e0 | 2892 | |
74a0d9f6 JK |
2893 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2894 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2895 | |
2896 | if (dwz_elements == 0) | |
74a0d9f6 | 2897 | return; |
2ec9a5e0 TT |
2898 | |
2899 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2900 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2901 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2902 | } |
2903 | ||
1fd400ff | 2904 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2905 | |
74a0d9f6 | 2906 | static void |
673bfd45 | 2907 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2908 | struct dwarf2_section_info *section, |
673bfd45 DE |
2909 | const gdb_byte *bytes, |
2910 | offset_type elements) | |
1fd400ff TT |
2911 | { |
2912 | offset_type i; | |
673bfd45 | 2913 | htab_t sig_types_hash; |
1fd400ff | 2914 | |
6aa5f3a6 DE |
2915 | dwarf2_per_objfile->n_type_units |
2916 | = dwarf2_per_objfile->n_allocated_type_units | |
2917 | = elements / 3; | |
8d749320 SM |
2918 | dwarf2_per_objfile->all_type_units = |
2919 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
1fd400ff | 2920 | |
673bfd45 | 2921 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2922 | |
2923 | for (i = 0; i < elements; i += 3) | |
2924 | { | |
52dc124a DE |
2925 | struct signatured_type *sig_type; |
2926 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2927 | void **slot; |
2928 | ||
74a0d9f6 JK |
2929 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2930 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2931 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2932 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2933 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2934 | bytes += 3 * 8; | |
2935 | ||
52dc124a | 2936 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2937 | struct signatured_type); |
52dc124a | 2938 | sig_type->signature = signature; |
3019eac3 DE |
2939 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2940 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 2941 | sig_type->per_cu.section = section; |
52dc124a DE |
2942 | sig_type->per_cu.offset.sect_off = offset; |
2943 | sig_type->per_cu.objfile = objfile; | |
2944 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2945 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2946 | struct dwarf2_per_cu_quick_data); | |
2947 | ||
52dc124a DE |
2948 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2949 | *slot = sig_type; | |
1fd400ff | 2950 | |
b4dd5633 | 2951 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2952 | } |
2953 | ||
673bfd45 | 2954 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2955 | } |
2956 | ||
9291a0cd TT |
2957 | /* Read the address map data from the mapped index, and use it to |
2958 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2959 | |
9291a0cd TT |
2960 | static void |
2961 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2962 | { | |
3e29f34a | 2963 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd TT |
2964 | const gdb_byte *iter, *end; |
2965 | struct obstack temp_obstack; | |
2966 | struct addrmap *mutable_map; | |
2967 | struct cleanup *cleanup; | |
2968 | CORE_ADDR baseaddr; | |
2969 | ||
2970 | obstack_init (&temp_obstack); | |
2971 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2972 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2973 | ||
2974 | iter = index->address_table; | |
2975 | end = iter + index->address_table_size; | |
2976 | ||
2977 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2978 | ||
2979 | while (iter < end) | |
2980 | { | |
2981 | ULONGEST hi, lo, cu_index; | |
2982 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2983 | iter += 8; | |
2984 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2985 | iter += 8; | |
2986 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2987 | iter += 4; | |
f652bce2 | 2988 | |
24a55014 | 2989 | if (lo > hi) |
f652bce2 | 2990 | { |
24a55014 DE |
2991 | complaint (&symfile_complaints, |
2992 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 2993 | hex_string (lo), hex_string (hi)); |
24a55014 | 2994 | continue; |
f652bce2 | 2995 | } |
24a55014 DE |
2996 | |
2997 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
2998 | { |
2999 | complaint (&symfile_complaints, | |
3000 | _(".gdb_index address table has invalid CU number %u"), | |
3001 | (unsigned) cu_index); | |
24a55014 | 3002 | continue; |
f652bce2 | 3003 | } |
24a55014 | 3004 | |
3e29f34a MR |
3005 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
3006 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
3007 | addrmap_set_empty (mutable_map, lo, hi - 1, dw2_get_cutu (cu_index)); | |
9291a0cd TT |
3008 | } |
3009 | ||
3010 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3011 | &objfile->objfile_obstack); | |
3012 | do_cleanups (cleanup); | |
3013 | } | |
3014 | ||
59d7bcaf JK |
3015 | /* The hash function for strings in the mapped index. This is the same as |
3016 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
3017 | implementation. This is necessary because the hash function is tied to the | |
3018 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
3019 | SYMBOL_HASH_NEXT. |
3020 | ||
3021 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 3022 | |
9291a0cd | 3023 | static hashval_t |
559a7a62 | 3024 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
3025 | { |
3026 | const unsigned char *str = (const unsigned char *) p; | |
3027 | hashval_t r = 0; | |
3028 | unsigned char c; | |
3029 | ||
3030 | while ((c = *str++) != 0) | |
559a7a62 JK |
3031 | { |
3032 | if (index_version >= 5) | |
3033 | c = tolower (c); | |
3034 | r = r * 67 + c - 113; | |
3035 | } | |
9291a0cd TT |
3036 | |
3037 | return r; | |
3038 | } | |
3039 | ||
3040 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
3041 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
3042 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 3043 | |
9291a0cd TT |
3044 | static int |
3045 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
3046 | offset_type **vec_out) | |
3047 | { | |
0cf03b49 JK |
3048 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
3049 | offset_type hash; | |
9291a0cd | 3050 | offset_type slot, step; |
559a7a62 | 3051 | int (*cmp) (const char *, const char *); |
9291a0cd | 3052 | |
0cf03b49 | 3053 | if (current_language->la_language == language_cplus |
45280282 IB |
3054 | || current_language->la_language == language_fortran |
3055 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3056 | { |
3057 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3058 | not contain any. */ | |
a8719064 | 3059 | |
72998fb3 | 3060 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3061 | { |
72998fb3 | 3062 | char *without_params = cp_remove_params (name); |
0cf03b49 | 3063 | |
72998fb3 DE |
3064 | if (without_params != NULL) |
3065 | { | |
3066 | make_cleanup (xfree, without_params); | |
3067 | name = without_params; | |
3068 | } | |
0cf03b49 JK |
3069 | } |
3070 | } | |
3071 | ||
559a7a62 | 3072 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3073 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3074 | simulate our NAME being searched is also lowercased. */ |
3075 | hash = mapped_index_string_hash ((index->version == 4 | |
3076 | && case_sensitivity == case_sensitive_off | |
3077 | ? 5 : index->version), | |
3078 | name); | |
3079 | ||
3876f04e DE |
3080 | slot = hash & (index->symbol_table_slots - 1); |
3081 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 3082 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3083 | |
3084 | for (;;) | |
3085 | { | |
3086 | /* Convert a slot number to an offset into the table. */ | |
3087 | offset_type i = 2 * slot; | |
3088 | const char *str; | |
3876f04e | 3089 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
3090 | { |
3091 | do_cleanups (back_to); | |
3092 | return 0; | |
3093 | } | |
9291a0cd | 3094 | |
3876f04e | 3095 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 3096 | if (!cmp (name, str)) |
9291a0cd TT |
3097 | { |
3098 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 3099 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 3100 | do_cleanups (back_to); |
9291a0cd TT |
3101 | return 1; |
3102 | } | |
3103 | ||
3876f04e | 3104 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
3105 | } |
3106 | } | |
3107 | ||
2ec9a5e0 TT |
3108 | /* A helper function that reads the .gdb_index from SECTION and fills |
3109 | in MAP. FILENAME is the name of the file containing the section; | |
3110 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
3111 | ok to use deprecated sections. | |
3112 | ||
3113 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3114 | out parameters that are filled in with information about the CU and | |
3115 | TU lists in the section. | |
3116 | ||
3117 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3118 | |
9291a0cd | 3119 | static int |
2ec9a5e0 TT |
3120 | read_index_from_section (struct objfile *objfile, |
3121 | const char *filename, | |
3122 | int deprecated_ok, | |
3123 | struct dwarf2_section_info *section, | |
3124 | struct mapped_index *map, | |
3125 | const gdb_byte **cu_list, | |
3126 | offset_type *cu_list_elements, | |
3127 | const gdb_byte **types_list, | |
3128 | offset_type *types_list_elements) | |
9291a0cd | 3129 | { |
948f8e3d | 3130 | const gdb_byte *addr; |
2ec9a5e0 | 3131 | offset_type version; |
b3b272e1 | 3132 | offset_type *metadata; |
1fd400ff | 3133 | int i; |
9291a0cd | 3134 | |
2ec9a5e0 | 3135 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3136 | return 0; |
82430852 JK |
3137 | |
3138 | /* Older elfutils strip versions could keep the section in the main | |
3139 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3140 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3141 | return 0; |
3142 | ||
2ec9a5e0 | 3143 | dwarf2_read_section (objfile, section); |
9291a0cd | 3144 | |
2ec9a5e0 | 3145 | addr = section->buffer; |
9291a0cd | 3146 | /* Version check. */ |
1fd400ff | 3147 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3148 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3149 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3150 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3151 | indices. */ |
831adc1f | 3152 | if (version < 4) |
481860b3 GB |
3153 | { |
3154 | static int warning_printed = 0; | |
3155 | if (!warning_printed) | |
3156 | { | |
3157 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3158 | filename); |
481860b3 GB |
3159 | warning_printed = 1; |
3160 | } | |
3161 | return 0; | |
3162 | } | |
3163 | /* Index version 4 uses a different hash function than index version | |
3164 | 5 and later. | |
3165 | ||
3166 | Versions earlier than 6 did not emit psymbols for inlined | |
3167 | functions. Using these files will cause GDB not to be able to | |
3168 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3169 | indices unless the user has done |
3170 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3171 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3172 | { |
3173 | static int warning_printed = 0; | |
3174 | if (!warning_printed) | |
3175 | { | |
e615022a DE |
3176 | warning (_("\ |
3177 | Skipping deprecated .gdb_index section in %s.\n\ | |
3178 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3179 | to use the section anyway."), | |
2ec9a5e0 | 3180 | filename); |
481860b3 GB |
3181 | warning_printed = 1; |
3182 | } | |
3183 | return 0; | |
3184 | } | |
796a7ff8 | 3185 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3186 | of the TU (for symbols coming from TUs), |
3187 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3188 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3189 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3190 | These are just performance bugs, and we can't distinguish gdb-generated | |
3191 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3192 | |
481860b3 | 3193 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3194 | longer backward compatible. */ |
796a7ff8 | 3195 | if (version > 8) |
594e8718 | 3196 | return 0; |
9291a0cd | 3197 | |
559a7a62 | 3198 | map->version = version; |
2ec9a5e0 | 3199 | map->total_size = section->size; |
9291a0cd TT |
3200 | |
3201 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3202 | |
3203 | i = 0; | |
2ec9a5e0 TT |
3204 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3205 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3206 | / 8); | |
1fd400ff TT |
3207 | ++i; |
3208 | ||
2ec9a5e0 TT |
3209 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3210 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3211 | - MAYBE_SWAP (metadata[i])) | |
3212 | / 8); | |
987d643c | 3213 | ++i; |
1fd400ff TT |
3214 | |
3215 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3216 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3217 | - MAYBE_SWAP (metadata[i])); | |
3218 | ++i; | |
3219 | ||
3876f04e DE |
3220 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3221 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3222 | - MAYBE_SWAP (metadata[i])) | |
3223 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3224 | ++i; |
9291a0cd | 3225 | |
f9d83a0b | 3226 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3227 | |
2ec9a5e0 TT |
3228 | return 1; |
3229 | } | |
3230 | ||
3231 | ||
3232 | /* Read the index file. If everything went ok, initialize the "quick" | |
3233 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
3234 | ||
3235 | static int | |
3236 | dwarf2_read_index (struct objfile *objfile) | |
3237 | { | |
3238 | struct mapped_index local_map, *map; | |
3239 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3240 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3241 | struct dwz_file *dwz; |
2ec9a5e0 | 3242 | |
4262abfb | 3243 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3244 | use_deprecated_index_sections, |
3245 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3246 | &cu_list, &cu_list_elements, | |
3247 | &types_list, &types_list_elements)) | |
3248 | return 0; | |
3249 | ||
0fefef59 | 3250 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3251 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3252 | return 0; |
3253 | ||
2ec9a5e0 TT |
3254 | /* If there is a .dwz file, read it so we can get its CU list as |
3255 | well. */ | |
4db1a1dc TT |
3256 | dwz = dwarf2_get_dwz_file (); |
3257 | if (dwz != NULL) | |
2ec9a5e0 | 3258 | { |
2ec9a5e0 TT |
3259 | struct mapped_index dwz_map; |
3260 | const gdb_byte *dwz_types_ignore; | |
3261 | offset_type dwz_types_elements_ignore; | |
3262 | ||
3263 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3264 | 1, | |
3265 | &dwz->gdb_index, &dwz_map, | |
3266 | &dwz_list, &dwz_list_elements, | |
3267 | &dwz_types_ignore, | |
3268 | &dwz_types_elements_ignore)) | |
3269 | { | |
3270 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3271 | bfd_get_filename (dwz->dwz_bfd)); | |
3272 | return 0; | |
3273 | } | |
3274 | } | |
3275 | ||
74a0d9f6 JK |
3276 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3277 | dwz_list_elements); | |
1fd400ff | 3278 | |
8b70b953 TT |
3279 | if (types_list_elements) |
3280 | { | |
3281 | struct dwarf2_section_info *section; | |
3282 | ||
3283 | /* We can only handle a single .debug_types when we have an | |
3284 | index. */ | |
3285 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3286 | return 0; | |
3287 | ||
3288 | section = VEC_index (dwarf2_section_info_def, | |
3289 | dwarf2_per_objfile->types, 0); | |
3290 | ||
74a0d9f6 JK |
3291 | create_signatured_type_table_from_index (objfile, section, types_list, |
3292 | types_list_elements); | |
8b70b953 | 3293 | } |
9291a0cd | 3294 | |
2ec9a5e0 TT |
3295 | create_addrmap_from_index (objfile, &local_map); |
3296 | ||
8d749320 | 3297 | map = XOBNEW (&objfile->objfile_obstack, struct mapped_index); |
2ec9a5e0 | 3298 | *map = local_map; |
9291a0cd TT |
3299 | |
3300 | dwarf2_per_objfile->index_table = map; | |
3301 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3302 | dwarf2_per_objfile->quick_file_names_table = |
3303 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3304 | |
3305 | return 1; | |
3306 | } | |
3307 | ||
3308 | /* A helper for the "quick" functions which sets the global | |
3309 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3310 | |
9291a0cd TT |
3311 | static void |
3312 | dw2_setup (struct objfile *objfile) | |
3313 | { | |
9a3c8263 SM |
3314 | dwarf2_per_objfile = ((struct dwarf2_per_objfile *) |
3315 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
9291a0cd TT |
3316 | gdb_assert (dwarf2_per_objfile); |
3317 | } | |
3318 | ||
dee91e82 | 3319 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3320 | |
dee91e82 DE |
3321 | static void |
3322 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3323 | const gdb_byte *info_ptr, |
dee91e82 DE |
3324 | struct die_info *comp_unit_die, |
3325 | int has_children, | |
3326 | void *data) | |
9291a0cd | 3327 | { |
dee91e82 DE |
3328 | struct dwarf2_cu *cu = reader->cu; |
3329 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3330 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3331 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 3332 | struct line_header *lh; |
9291a0cd | 3333 | struct attribute *attr; |
dee91e82 | 3334 | int i; |
15d034d0 | 3335 | const char *name, *comp_dir; |
7b9f3c50 DE |
3336 | void **slot; |
3337 | struct quick_file_names *qfn; | |
3338 | unsigned int line_offset; | |
9291a0cd | 3339 | |
0186c6a7 DE |
3340 | gdb_assert (! this_cu->is_debug_types); |
3341 | ||
07261596 TT |
3342 | /* Our callers never want to match partial units -- instead they |
3343 | will match the enclosing full CU. */ | |
3344 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3345 | { | |
3346 | this_cu->v.quick->no_file_data = 1; | |
3347 | return; | |
3348 | } | |
3349 | ||
0186c6a7 | 3350 | lh_cu = this_cu; |
7b9f3c50 DE |
3351 | lh = NULL; |
3352 | slot = NULL; | |
3353 | line_offset = 0; | |
dee91e82 DE |
3354 | |
3355 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
3356 | if (attr) |
3357 | { | |
7b9f3c50 DE |
3358 | struct quick_file_names find_entry; |
3359 | ||
3360 | line_offset = DW_UNSND (attr); | |
3361 | ||
3362 | /* We may have already read in this line header (TU line header sharing). | |
3363 | If we have we're done. */ | |
094b34ac DE |
3364 | find_entry.hash.dwo_unit = cu->dwo_unit; |
3365 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3366 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3367 | &find_entry, INSERT); | |
3368 | if (*slot != NULL) | |
3369 | { | |
9a3c8263 | 3370 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3371 | return; |
7b9f3c50 DE |
3372 | } |
3373 | ||
3019eac3 | 3374 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3375 | } |
3376 | if (lh == NULL) | |
3377 | { | |
094b34ac | 3378 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3379 | return; |
9291a0cd TT |
3380 | } |
3381 | ||
8d749320 | 3382 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac DE |
3383 | qfn->hash.dwo_unit = cu->dwo_unit; |
3384 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3385 | gdb_assert (slot != NULL); |
3386 | *slot = qfn; | |
9291a0cd | 3387 | |
dee91e82 | 3388 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 3389 | |
7b9f3c50 | 3390 | qfn->num_file_names = lh->num_file_names; |
8d749320 SM |
3391 | qfn->file_names = |
3392 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->num_file_names); | |
9291a0cd | 3393 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
3394 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
3395 | qfn->real_names = NULL; | |
9291a0cd | 3396 | |
7b9f3c50 | 3397 | free_line_header (lh); |
7b9f3c50 | 3398 | |
094b34ac | 3399 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3400 | } |
3401 | ||
3402 | /* A helper for the "quick" functions which attempts to read the line | |
3403 | table for THIS_CU. */ | |
3404 | ||
3405 | static struct quick_file_names * | |
e4a48d9d | 3406 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3407 | { |
0186c6a7 DE |
3408 | /* This should never be called for TUs. */ |
3409 | gdb_assert (! this_cu->is_debug_types); | |
3410 | /* Nor type unit groups. */ | |
3411 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3412 | |
dee91e82 DE |
3413 | if (this_cu->v.quick->file_names != NULL) |
3414 | return this_cu->v.quick->file_names; | |
3415 | /* If we know there is no line data, no point in looking again. */ | |
3416 | if (this_cu->v.quick->no_file_data) | |
3417 | return NULL; | |
3418 | ||
0186c6a7 | 3419 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3420 | |
3421 | if (this_cu->v.quick->no_file_data) | |
3422 | return NULL; | |
3423 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3424 | } |
3425 | ||
3426 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3427 | real path for a given file name from the line table. */ |
2fdf6df6 | 3428 | |
9291a0cd | 3429 | static const char * |
7b9f3c50 DE |
3430 | dw2_get_real_path (struct objfile *objfile, |
3431 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3432 | { |
7b9f3c50 DE |
3433 | if (qfn->real_names == NULL) |
3434 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3435 | qfn->num_file_names, const char *); |
9291a0cd | 3436 | |
7b9f3c50 DE |
3437 | if (qfn->real_names[index] == NULL) |
3438 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 3439 | |
7b9f3c50 | 3440 | return qfn->real_names[index]; |
9291a0cd TT |
3441 | } |
3442 | ||
3443 | static struct symtab * | |
3444 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3445 | { | |
43f3e411 | 3446 | struct compunit_symtab *cust; |
9291a0cd | 3447 | int index; |
ae2de4f8 | 3448 | |
9291a0cd TT |
3449 | dw2_setup (objfile); |
3450 | index = dwarf2_per_objfile->n_comp_units - 1; | |
43f3e411 DE |
3451 | cust = dw2_instantiate_symtab (dw2_get_cutu (index)); |
3452 | if (cust == NULL) | |
3453 | return NULL; | |
3454 | return compunit_primary_filetab (cust); | |
9291a0cd TT |
3455 | } |
3456 | ||
7b9f3c50 DE |
3457 | /* Traversal function for dw2_forget_cached_source_info. */ |
3458 | ||
3459 | static int | |
3460 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3461 | { |
7b9f3c50 | 3462 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3463 | |
7b9f3c50 | 3464 | if (file_data->real_names) |
9291a0cd | 3465 | { |
7b9f3c50 | 3466 | int i; |
9291a0cd | 3467 | |
7b9f3c50 | 3468 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3469 | { |
7b9f3c50 DE |
3470 | xfree ((void*) file_data->real_names[i]); |
3471 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3472 | } |
3473 | } | |
7b9f3c50 DE |
3474 | |
3475 | return 1; | |
3476 | } | |
3477 | ||
3478 | static void | |
3479 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3480 | { | |
3481 | dw2_setup (objfile); | |
3482 | ||
3483 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3484 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3485 | } |
3486 | ||
f8eba3c6 TT |
3487 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3488 | the symtabs and calls the iterator. */ | |
3489 | ||
3490 | static int | |
3491 | dw2_map_expand_apply (struct objfile *objfile, | |
3492 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3493 | const char *name, const char *real_path, |
14bc53a8 | 3494 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3495 | { |
43f3e411 | 3496 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3497 | |
3498 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3499 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3500 | return 0; |
3501 | ||
3502 | /* This may expand more than one symtab, and we want to iterate over | |
3503 | all of them. */ | |
a0f42c21 | 3504 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3505 | |
14bc53a8 PA |
3506 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3507 | last_made, callback); | |
f8eba3c6 TT |
3508 | } |
3509 | ||
3510 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3511 | ||
14bc53a8 PA |
3512 | static bool |
3513 | dw2_map_symtabs_matching_filename | |
3514 | (struct objfile *objfile, const char *name, const char *real_path, | |
3515 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd TT |
3516 | { |
3517 | int i; | |
c011a4f4 | 3518 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3519 | |
3520 | dw2_setup (objfile); | |
ae2de4f8 | 3521 | |
848e3e78 DE |
3522 | /* The rule is CUs specify all the files, including those used by |
3523 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3524 | |
848e3e78 | 3525 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3526 | { |
3527 | int j; | |
8832e7e3 | 3528 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3529 | struct quick_file_names *file_data; |
9291a0cd | 3530 | |
3d7bb9d9 | 3531 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3532 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3533 | continue; |
3534 | ||
e4a48d9d | 3535 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3536 | if (file_data == NULL) |
9291a0cd TT |
3537 | continue; |
3538 | ||
7b9f3c50 | 3539 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3540 | { |
7b9f3c50 | 3541 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3542 | const char *this_real_name; |
9291a0cd | 3543 | |
af529f8f | 3544 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3545 | { |
f5b95b50 | 3546 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3547 | callback)) |
3548 | return true; | |
288e77a7 | 3549 | continue; |
4aac40c8 | 3550 | } |
9291a0cd | 3551 | |
c011a4f4 DE |
3552 | /* Before we invoke realpath, which can get expensive when many |
3553 | files are involved, do a quick comparison of the basenames. */ | |
3554 | if (! basenames_may_differ | |
3555 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3556 | continue; | |
3557 | ||
da235a7c JK |
3558 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3559 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3560 | { |
da235a7c | 3561 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3562 | callback)) |
3563 | return true; | |
288e77a7 | 3564 | continue; |
da235a7c | 3565 | } |
9291a0cd | 3566 | |
da235a7c JK |
3567 | if (real_path != NULL) |
3568 | { | |
af529f8f JK |
3569 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3570 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3571 | if (this_real_name != NULL |
af529f8f | 3572 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3573 | { |
f5b95b50 | 3574 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3575 | callback)) |
3576 | return true; | |
288e77a7 | 3577 | continue; |
9291a0cd TT |
3578 | } |
3579 | } | |
3580 | } | |
3581 | } | |
3582 | ||
14bc53a8 | 3583 | return false; |
9291a0cd TT |
3584 | } |
3585 | ||
da51c347 DE |
3586 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3587 | ||
3588 | struct dw2_symtab_iterator | |
9291a0cd | 3589 | { |
da51c347 DE |
3590 | /* The internalized form of .gdb_index. */ |
3591 | struct mapped_index *index; | |
3592 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3593 | int want_specific_block; | |
3594 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3595 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3596 | int block_index; | |
3597 | /* The kind of symbol we're looking for. */ | |
3598 | domain_enum domain; | |
3599 | /* The list of CUs from the index entry of the symbol, | |
3600 | or NULL if not found. */ | |
3601 | offset_type *vec; | |
3602 | /* The next element in VEC to look at. */ | |
3603 | int next; | |
3604 | /* The number of elements in VEC, or zero if there is no match. */ | |
3605 | int length; | |
8943b874 DE |
3606 | /* Have we seen a global version of the symbol? |
3607 | If so we can ignore all further global instances. | |
3608 | This is to work around gold/15646, inefficient gold-generated | |
3609 | indices. */ | |
3610 | int global_seen; | |
da51c347 | 3611 | }; |
9291a0cd | 3612 | |
da51c347 DE |
3613 | /* Initialize the index symtab iterator ITER. |
3614 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3615 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3616 | |
9291a0cd | 3617 | static void |
da51c347 DE |
3618 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3619 | struct mapped_index *index, | |
3620 | int want_specific_block, | |
3621 | int block_index, | |
3622 | domain_enum domain, | |
3623 | const char *name) | |
3624 | { | |
3625 | iter->index = index; | |
3626 | iter->want_specific_block = want_specific_block; | |
3627 | iter->block_index = block_index; | |
3628 | iter->domain = domain; | |
3629 | iter->next = 0; | |
8943b874 | 3630 | iter->global_seen = 0; |
da51c347 DE |
3631 | |
3632 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3633 | iter->length = MAYBE_SWAP (*iter->vec); | |
3634 | else | |
3635 | { | |
3636 | iter->vec = NULL; | |
3637 | iter->length = 0; | |
3638 | } | |
3639 | } | |
3640 | ||
3641 | /* Return the next matching CU or NULL if there are no more. */ | |
3642 | ||
3643 | static struct dwarf2_per_cu_data * | |
3644 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3645 | { | |
3646 | for ( ; iter->next < iter->length; ++iter->next) | |
3647 | { | |
3648 | offset_type cu_index_and_attrs = | |
3649 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3650 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 3651 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
3652 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3653 | /* This value is only valid for index versions >= 7. */ | |
3654 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3655 | gdb_index_symbol_kind symbol_kind = | |
3656 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3657 | /* Only check the symbol attributes if they're present. | |
3658 | Indices prior to version 7 don't record them, | |
3659 | and indices >= 7 may elide them for certain symbols | |
3660 | (gold does this). */ | |
3661 | int attrs_valid = | |
3662 | (iter->index->version >= 7 | |
3663 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3664 | ||
3190f0c6 DE |
3665 | /* Don't crash on bad data. */ |
3666 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3667 | + dwarf2_per_objfile->n_type_units)) | |
3668 | { | |
3669 | complaint (&symfile_complaints, | |
3670 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3671 | " [in module %s]"), |
3672 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3673 | continue; |
3674 | } | |
3675 | ||
8832e7e3 | 3676 | per_cu = dw2_get_cutu (cu_index); |
3190f0c6 | 3677 | |
da51c347 | 3678 | /* Skip if already read in. */ |
43f3e411 | 3679 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3680 | continue; |
3681 | ||
8943b874 DE |
3682 | /* Check static vs global. */ |
3683 | if (attrs_valid) | |
3684 | { | |
3685 | if (iter->want_specific_block | |
3686 | && want_static != is_static) | |
3687 | continue; | |
3688 | /* Work around gold/15646. */ | |
3689 | if (!is_static && iter->global_seen) | |
3690 | continue; | |
3691 | if (!is_static) | |
3692 | iter->global_seen = 1; | |
3693 | } | |
da51c347 DE |
3694 | |
3695 | /* Only check the symbol's kind if it has one. */ | |
3696 | if (attrs_valid) | |
3697 | { | |
3698 | switch (iter->domain) | |
3699 | { | |
3700 | case VAR_DOMAIN: | |
3701 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3702 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3703 | /* Some types are also in VAR_DOMAIN. */ | |
3704 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3705 | continue; | |
3706 | break; | |
3707 | case STRUCT_DOMAIN: | |
3708 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3709 | continue; | |
3710 | break; | |
3711 | case LABEL_DOMAIN: | |
3712 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3713 | continue; | |
3714 | break; | |
3715 | default: | |
3716 | break; | |
3717 | } | |
3718 | } | |
3719 | ||
3720 | ++iter->next; | |
3721 | return per_cu; | |
3722 | } | |
3723 | ||
3724 | return NULL; | |
3725 | } | |
3726 | ||
43f3e411 | 3727 | static struct compunit_symtab * |
da51c347 DE |
3728 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
3729 | const char *name, domain_enum domain) | |
9291a0cd | 3730 | { |
43f3e411 | 3731 | struct compunit_symtab *stab_best = NULL; |
156942c7 DE |
3732 | struct mapped_index *index; |
3733 | ||
9291a0cd TT |
3734 | dw2_setup (objfile); |
3735 | ||
156942c7 DE |
3736 | index = dwarf2_per_objfile->index_table; |
3737 | ||
da51c347 | 3738 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3739 | if (index) |
9291a0cd | 3740 | { |
da51c347 DE |
3741 | struct dw2_symtab_iterator iter; |
3742 | struct dwarf2_per_cu_data *per_cu; | |
3743 | ||
3744 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3745 | |
da51c347 | 3746 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3747 | { |
b2e2f908 | 3748 | struct symbol *sym, *with_opaque = NULL; |
43f3e411 DE |
3749 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); |
3750 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
f194fefb | 3751 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3752 | |
b2e2f908 DE |
3753 | sym = block_find_symbol (block, name, domain, |
3754 | block_find_non_opaque_type_preferred, | |
3755 | &with_opaque); | |
3756 | ||
da51c347 DE |
3757 | /* Some caution must be observed with overloaded functions |
3758 | and methods, since the index will not contain any overload | |
3759 | information (but NAME might contain it). */ | |
da51c347 | 3760 | |
b2e2f908 DE |
3761 | if (sym != NULL |
3762 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
3763 | return stab; | |
3764 | if (with_opaque != NULL | |
3765 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
3766 | stab_best = stab; | |
da51c347 DE |
3767 | |
3768 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3769 | } |
3770 | } | |
9291a0cd | 3771 | |
da51c347 | 3772 | return stab_best; |
9291a0cd TT |
3773 | } |
3774 | ||
3775 | static void | |
3776 | dw2_print_stats (struct objfile *objfile) | |
3777 | { | |
e4a48d9d | 3778 | int i, total, count; |
9291a0cd TT |
3779 | |
3780 | dw2_setup (objfile); | |
e4a48d9d | 3781 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3782 | count = 0; |
e4a48d9d | 3783 | for (i = 0; i < total; ++i) |
9291a0cd | 3784 | { |
8832e7e3 | 3785 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3786 | |
43f3e411 | 3787 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3788 | ++count; |
3789 | } | |
e4a48d9d | 3790 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3791 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3792 | } | |
3793 | ||
779bd270 DE |
3794 | /* This dumps minimal information about the index. |
3795 | It is called via "mt print objfiles". | |
3796 | One use is to verify .gdb_index has been loaded by the | |
3797 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3798 | ||
9291a0cd TT |
3799 | static void |
3800 | dw2_dump (struct objfile *objfile) | |
3801 | { | |
779bd270 DE |
3802 | dw2_setup (objfile); |
3803 | gdb_assert (dwarf2_per_objfile->using_index); | |
3804 | printf_filtered (".gdb_index:"); | |
3805 | if (dwarf2_per_objfile->index_table != NULL) | |
3806 | { | |
3807 | printf_filtered (" version %d\n", | |
3808 | dwarf2_per_objfile->index_table->version); | |
3809 | } | |
3810 | else | |
3811 | printf_filtered (" faked for \"readnow\"\n"); | |
3812 | printf_filtered ("\n"); | |
9291a0cd TT |
3813 | } |
3814 | ||
3815 | static void | |
3189cb12 DE |
3816 | dw2_relocate (struct objfile *objfile, |
3817 | const struct section_offsets *new_offsets, | |
3818 | const struct section_offsets *delta) | |
9291a0cd TT |
3819 | { |
3820 | /* There's nothing to relocate here. */ | |
3821 | } | |
3822 | ||
3823 | static void | |
3824 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3825 | const char *func_name) | |
3826 | { | |
da51c347 DE |
3827 | struct mapped_index *index; |
3828 | ||
3829 | dw2_setup (objfile); | |
3830 | ||
3831 | index = dwarf2_per_objfile->index_table; | |
3832 | ||
3833 | /* index is NULL if OBJF_READNOW. */ | |
3834 | if (index) | |
3835 | { | |
3836 | struct dw2_symtab_iterator iter; | |
3837 | struct dwarf2_per_cu_data *per_cu; | |
3838 | ||
3839 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3840 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3841 | func_name); | |
3842 | ||
3843 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3844 | dw2_instantiate_symtab (per_cu); | |
3845 | } | |
9291a0cd TT |
3846 | } |
3847 | ||
3848 | static void | |
3849 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3850 | { | |
3851 | int i; | |
3852 | ||
3853 | dw2_setup (objfile); | |
1fd400ff TT |
3854 | |
3855 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3856 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3857 | { |
8832e7e3 | 3858 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3859 | |
a0f42c21 | 3860 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3861 | } |
3862 | } | |
3863 | ||
3864 | static void | |
652a8996 JK |
3865 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3866 | const char *fullname) | |
9291a0cd TT |
3867 | { |
3868 | int i; | |
3869 | ||
3870 | dw2_setup (objfile); | |
d4637a04 DE |
3871 | |
3872 | /* We don't need to consider type units here. | |
3873 | This is only called for examining code, e.g. expand_line_sal. | |
3874 | There can be an order of magnitude (or more) more type units | |
3875 | than comp units, and we avoid them if we can. */ | |
3876 | ||
3877 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3878 | { |
3879 | int j; | |
8832e7e3 | 3880 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
7b9f3c50 | 3881 | struct quick_file_names *file_data; |
9291a0cd | 3882 | |
3d7bb9d9 | 3883 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3884 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3885 | continue; |
3886 | ||
e4a48d9d | 3887 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3888 | if (file_data == NULL) |
9291a0cd TT |
3889 | continue; |
3890 | ||
7b9f3c50 | 3891 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3892 | { |
652a8996 JK |
3893 | const char *this_fullname = file_data->file_names[j]; |
3894 | ||
3895 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3896 | { |
a0f42c21 | 3897 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3898 | break; |
3899 | } | |
3900 | } | |
3901 | } | |
3902 | } | |
3903 | ||
9291a0cd | 3904 | static void |
ade7ed9e | 3905 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 3906 | const char * name, domain_enum domain, |
ade7ed9e | 3907 | int global, |
40658b94 PH |
3908 | int (*callback) (struct block *, |
3909 | struct symbol *, void *), | |
2edb89d3 JK |
3910 | void *data, symbol_compare_ftype *match, |
3911 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3912 | { |
40658b94 | 3913 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3914 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3915 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3916 | } |
3917 | ||
3918 | static void | |
f8eba3c6 TT |
3919 | dw2_expand_symtabs_matching |
3920 | (struct objfile *objfile, | |
14bc53a8 PA |
3921 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3922 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3923 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3924 | enum search_domain kind) | |
9291a0cd TT |
3925 | { |
3926 | int i; | |
3927 | offset_type iter; | |
4b5246aa | 3928 | struct mapped_index *index; |
9291a0cd TT |
3929 | |
3930 | dw2_setup (objfile); | |
ae2de4f8 DE |
3931 | |
3932 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3933 | if (!dwarf2_per_objfile->index_table) |
3934 | return; | |
4b5246aa | 3935 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3936 | |
7b08b9eb | 3937 | if (file_matcher != NULL) |
24c79950 | 3938 | { |
fc4007c9 TT |
3939 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
3940 | htab_eq_pointer, | |
3941 | NULL, xcalloc, xfree)); | |
3942 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
3943 | htab_eq_pointer, | |
3944 | NULL, xcalloc, xfree)); | |
24c79950 | 3945 | |
848e3e78 DE |
3946 | /* The rule is CUs specify all the files, including those used by |
3947 | any TU, so there's no need to scan TUs here. */ | |
3948 | ||
3949 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3950 | { |
3951 | int j; | |
8832e7e3 | 3952 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
24c79950 TT |
3953 | struct quick_file_names *file_data; |
3954 | void **slot; | |
7b08b9eb | 3955 | |
61d96d7e DE |
3956 | QUIT; |
3957 | ||
24c79950 | 3958 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3959 | |
24c79950 | 3960 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3961 | if (per_cu->v.quick->compunit_symtab) |
24c79950 | 3962 | continue; |
7b08b9eb | 3963 | |
e4a48d9d | 3964 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3965 | if (file_data == NULL) |
3966 | continue; | |
7b08b9eb | 3967 | |
fc4007c9 | 3968 | if (htab_find (visited_not_found.get (), file_data) != NULL) |
24c79950 | 3969 | continue; |
fc4007c9 | 3970 | else if (htab_find (visited_found.get (), file_data) != NULL) |
24c79950 TT |
3971 | { |
3972 | per_cu->v.quick->mark = 1; | |
3973 | continue; | |
3974 | } | |
3975 | ||
3976 | for (j = 0; j < file_data->num_file_names; ++j) | |
3977 | { | |
da235a7c JK |
3978 | const char *this_real_name; |
3979 | ||
14bc53a8 | 3980 | if (file_matcher (file_data->file_names[j], false)) |
24c79950 TT |
3981 | { |
3982 | per_cu->v.quick->mark = 1; | |
3983 | break; | |
3984 | } | |
da235a7c JK |
3985 | |
3986 | /* Before we invoke realpath, which can get expensive when many | |
3987 | files are involved, do a quick comparison of the basenames. */ | |
3988 | if (!basenames_may_differ | |
3989 | && !file_matcher (lbasename (file_data->file_names[j]), | |
14bc53a8 | 3990 | true)) |
da235a7c JK |
3991 | continue; |
3992 | ||
3993 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
14bc53a8 | 3994 | if (file_matcher (this_real_name, false)) |
da235a7c JK |
3995 | { |
3996 | per_cu->v.quick->mark = 1; | |
3997 | break; | |
3998 | } | |
24c79950 TT |
3999 | } |
4000 | ||
4001 | slot = htab_find_slot (per_cu->v.quick->mark | |
fc4007c9 TT |
4002 | ? visited_found.get () |
4003 | : visited_not_found.get (), | |
24c79950 TT |
4004 | file_data, INSERT); |
4005 | *slot = file_data; | |
4006 | } | |
24c79950 | 4007 | } |
9291a0cd | 4008 | |
3876f04e | 4009 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
4010 | { |
4011 | offset_type idx = 2 * iter; | |
4012 | const char *name; | |
4013 | offset_type *vec, vec_len, vec_idx; | |
8943b874 | 4014 | int global_seen = 0; |
9291a0cd | 4015 | |
61d96d7e DE |
4016 | QUIT; |
4017 | ||
3876f04e | 4018 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
4019 | continue; |
4020 | ||
3876f04e | 4021 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 4022 | |
14bc53a8 | 4023 | if (!symbol_matcher (name)) |
9291a0cd TT |
4024 | continue; |
4025 | ||
4026 | /* The name was matched, now expand corresponding CUs that were | |
4027 | marked. */ | |
4b5246aa | 4028 | vec = (offset_type *) (index->constant_pool |
3876f04e | 4029 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
4030 | vec_len = MAYBE_SWAP (vec[0]); |
4031 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4032 | { | |
e254ef6a | 4033 | struct dwarf2_per_cu_data *per_cu; |
156942c7 | 4034 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
8943b874 DE |
4035 | /* This value is only valid for index versions >= 7. */ |
4036 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
156942c7 DE |
4037 | gdb_index_symbol_kind symbol_kind = |
4038 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4039 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 DE |
4040 | /* Only check the symbol attributes if they're present. |
4041 | Indices prior to version 7 don't record them, | |
4042 | and indices >= 7 may elide them for certain symbols | |
4043 | (gold does this). */ | |
4044 | int attrs_valid = | |
4045 | (index->version >= 7 | |
4046 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4047 | ||
8943b874 DE |
4048 | /* Work around gold/15646. */ |
4049 | if (attrs_valid) | |
4050 | { | |
4051 | if (!is_static && global_seen) | |
4052 | continue; | |
4053 | if (!is_static) | |
4054 | global_seen = 1; | |
4055 | } | |
4056 | ||
3190f0c6 DE |
4057 | /* Only check the symbol's kind if it has one. */ |
4058 | if (attrs_valid) | |
156942c7 DE |
4059 | { |
4060 | switch (kind) | |
4061 | { | |
4062 | case VARIABLES_DOMAIN: | |
4063 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4064 | continue; | |
4065 | break; | |
4066 | case FUNCTIONS_DOMAIN: | |
4067 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
4068 | continue; | |
4069 | break; | |
4070 | case TYPES_DOMAIN: | |
4071 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4072 | continue; | |
4073 | break; | |
4074 | default: | |
4075 | break; | |
4076 | } | |
4077 | } | |
4078 | ||
3190f0c6 DE |
4079 | /* Don't crash on bad data. */ |
4080 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
4081 | + dwarf2_per_objfile->n_type_units)) | |
4082 | { | |
4083 | complaint (&symfile_complaints, | |
4084 | _(".gdb_index entry has bad CU index" | |
4262abfb | 4085 | " [in module %s]"), objfile_name (objfile)); |
3190f0c6 DE |
4086 | continue; |
4087 | } | |
4088 | ||
8832e7e3 | 4089 | per_cu = dw2_get_cutu (cu_index); |
7b08b9eb | 4090 | if (file_matcher == NULL || per_cu->v.quick->mark) |
276d885b GB |
4091 | { |
4092 | int symtab_was_null = | |
4093 | (per_cu->v.quick->compunit_symtab == NULL); | |
4094 | ||
4095 | dw2_instantiate_symtab (per_cu); | |
4096 | ||
4097 | if (expansion_notify != NULL | |
4098 | && symtab_was_null | |
4099 | && per_cu->v.quick->compunit_symtab != NULL) | |
4100 | { | |
14bc53a8 | 4101 | expansion_notify (per_cu->v.quick->compunit_symtab); |
276d885b GB |
4102 | } |
4103 | } | |
9291a0cd TT |
4104 | } |
4105 | } | |
4106 | } | |
4107 | ||
43f3e411 | 4108 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific |
9703b513 TT |
4109 | symtab. */ |
4110 | ||
43f3e411 DE |
4111 | static struct compunit_symtab * |
4112 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4113 | CORE_ADDR pc) | |
9703b513 TT |
4114 | { |
4115 | int i; | |
4116 | ||
43f3e411 DE |
4117 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL |
4118 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4119 | return cust; | |
9703b513 | 4120 | |
43f3e411 | 4121 | if (cust->includes == NULL) |
a3ec0bb1 DE |
4122 | return NULL; |
4123 | ||
43f3e411 | 4124 | for (i = 0; cust->includes[i]; ++i) |
9703b513 | 4125 | { |
43f3e411 | 4126 | struct compunit_symtab *s = cust->includes[i]; |
9703b513 | 4127 | |
43f3e411 | 4128 | s = recursively_find_pc_sect_compunit_symtab (s, pc); |
9703b513 TT |
4129 | if (s != NULL) |
4130 | return s; | |
4131 | } | |
4132 | ||
4133 | return NULL; | |
4134 | } | |
4135 | ||
43f3e411 DE |
4136 | static struct compunit_symtab * |
4137 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4138 | struct bound_minimal_symbol msymbol, | |
4139 | CORE_ADDR pc, | |
4140 | struct obj_section *section, | |
4141 | int warn_if_readin) | |
9291a0cd TT |
4142 | { |
4143 | struct dwarf2_per_cu_data *data; | |
43f3e411 | 4144 | struct compunit_symtab *result; |
9291a0cd TT |
4145 | |
4146 | dw2_setup (objfile); | |
4147 | ||
4148 | if (!objfile->psymtabs_addrmap) | |
4149 | return NULL; | |
4150 | ||
9a3c8263 SM |
4151 | data = (struct dwarf2_per_cu_data *) addrmap_find (objfile->psymtabs_addrmap, |
4152 | pc); | |
9291a0cd TT |
4153 | if (!data) |
4154 | return NULL; | |
4155 | ||
43f3e411 | 4156 | if (warn_if_readin && data->v.quick->compunit_symtab) |
abebb8b0 | 4157 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
4158 | paddress (get_objfile_arch (objfile), pc)); |
4159 | ||
43f3e411 DE |
4160 | result |
4161 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
4162 | pc); | |
9703b513 TT |
4163 | gdb_assert (result != NULL); |
4164 | return result; | |
9291a0cd TT |
4165 | } |
4166 | ||
9291a0cd | 4167 | static void |
44b13c5a | 4168 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 4169 | void *data, int need_fullname) |
9291a0cd TT |
4170 | { |
4171 | int i; | |
fc4007c9 TT |
4172 | htab_up visited (htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, |
4173 | NULL, xcalloc, xfree)); | |
9291a0cd TT |
4174 | |
4175 | dw2_setup (objfile); | |
ae2de4f8 | 4176 | |
848e3e78 DE |
4177 | /* The rule is CUs specify all the files, including those used by |
4178 | any TU, so there's no need to scan TUs here. | |
4179 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 4180 | |
848e3e78 | 4181 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 | 4182 | { |
8832e7e3 | 4183 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
24c79950 | 4184 | |
43f3e411 | 4185 | if (per_cu->v.quick->compunit_symtab) |
24c79950 | 4186 | { |
fc4007c9 TT |
4187 | void **slot = htab_find_slot (visited.get (), |
4188 | per_cu->v.quick->file_names, | |
24c79950 TT |
4189 | INSERT); |
4190 | ||
4191 | *slot = per_cu->v.quick->file_names; | |
4192 | } | |
4193 | } | |
4194 | ||
848e3e78 | 4195 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4196 | { |
4197 | int j; | |
8832e7e3 | 4198 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 4199 | struct quick_file_names *file_data; |
24c79950 | 4200 | void **slot; |
9291a0cd | 4201 | |
3d7bb9d9 | 4202 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4203 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4204 | continue; |
4205 | ||
e4a48d9d | 4206 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4207 | if (file_data == NULL) |
9291a0cd TT |
4208 | continue; |
4209 | ||
fc4007c9 | 4210 | slot = htab_find_slot (visited.get (), file_data, INSERT); |
24c79950 TT |
4211 | if (*slot) |
4212 | { | |
4213 | /* Already visited. */ | |
4214 | continue; | |
4215 | } | |
4216 | *slot = file_data; | |
4217 | ||
7b9f3c50 | 4218 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4219 | { |
74e2f255 DE |
4220 | const char *this_real_name; |
4221 | ||
4222 | if (need_fullname) | |
4223 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4224 | else | |
4225 | this_real_name = NULL; | |
7b9f3c50 | 4226 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
4227 | } |
4228 | } | |
4229 | } | |
4230 | ||
4231 | static int | |
4232 | dw2_has_symbols (struct objfile *objfile) | |
4233 | { | |
4234 | return 1; | |
4235 | } | |
4236 | ||
4237 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4238 | { | |
4239 | dw2_has_symbols, | |
4240 | dw2_find_last_source_symtab, | |
4241 | dw2_forget_cached_source_info, | |
f8eba3c6 | 4242 | dw2_map_symtabs_matching_filename, |
9291a0cd | 4243 | dw2_lookup_symbol, |
9291a0cd TT |
4244 | dw2_print_stats, |
4245 | dw2_dump, | |
4246 | dw2_relocate, | |
4247 | dw2_expand_symtabs_for_function, | |
4248 | dw2_expand_all_symtabs, | |
652a8996 | 4249 | dw2_expand_symtabs_with_fullname, |
40658b94 | 4250 | dw2_map_matching_symbols, |
9291a0cd | 4251 | dw2_expand_symtabs_matching, |
43f3e411 | 4252 | dw2_find_pc_sect_compunit_symtab, |
9291a0cd TT |
4253 | dw2_map_symbol_filenames |
4254 | }; | |
4255 | ||
4256 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
4257 | file will use psymtabs, or 1 if using the GNU index. */ | |
4258 | ||
4259 | int | |
4260 | dwarf2_initialize_objfile (struct objfile *objfile) | |
4261 | { | |
4262 | /* If we're about to read full symbols, don't bother with the | |
4263 | indices. In this case we also don't care if some other debug | |
4264 | format is making psymtabs, because they are all about to be | |
4265 | expanded anyway. */ | |
4266 | if ((objfile->flags & OBJF_READNOW)) | |
4267 | { | |
4268 | int i; | |
4269 | ||
4270 | dwarf2_per_objfile->using_index = 1; | |
4271 | create_all_comp_units (objfile); | |
0e50663e | 4272 | create_all_type_units (objfile); |
7b9f3c50 DE |
4273 | dwarf2_per_objfile->quick_file_names_table = |
4274 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 4275 | |
1fd400ff | 4276 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 4277 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4278 | { |
8832e7e3 | 4279 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 4280 | |
e254ef6a DE |
4281 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
4282 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
4283 | } |
4284 | ||
4285 | /* Return 1 so that gdb sees the "quick" functions. However, | |
4286 | these functions will be no-ops because we will have expanded | |
4287 | all symtabs. */ | |
4288 | return 1; | |
4289 | } | |
4290 | ||
4291 | if (dwarf2_read_index (objfile)) | |
4292 | return 1; | |
4293 | ||
9291a0cd TT |
4294 | return 0; |
4295 | } | |
4296 | ||
4297 | \f | |
4298 | ||
dce234bc PP |
4299 | /* Build a partial symbol table. */ |
4300 | ||
4301 | void | |
f29dff0a | 4302 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 4303 | { |
c9bf0622 | 4304 | |
f29dff0a | 4305 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
4306 | { |
4307 | init_psymbol_list (objfile, 1024); | |
4308 | } | |
4309 | ||
492d29ea | 4310 | TRY |
c9bf0622 TT |
4311 | { |
4312 | /* This isn't really ideal: all the data we allocate on the | |
4313 | objfile's obstack is still uselessly kept around. However, | |
4314 | freeing it seems unsafe. */ | |
906768f9 | 4315 | psymtab_discarder psymtabs (objfile); |
c9bf0622 | 4316 | dwarf2_build_psymtabs_hard (objfile); |
906768f9 | 4317 | psymtabs.keep (); |
c9bf0622 | 4318 | } |
492d29ea PA |
4319 | CATCH (except, RETURN_MASK_ERROR) |
4320 | { | |
4321 | exception_print (gdb_stderr, except); | |
4322 | } | |
4323 | END_CATCH | |
c906108c | 4324 | } |
c906108c | 4325 | |
1ce1cefd DE |
4326 | /* Return the total length of the CU described by HEADER. */ |
4327 | ||
4328 | static unsigned int | |
4329 | get_cu_length (const struct comp_unit_head *header) | |
4330 | { | |
4331 | return header->initial_length_size + header->length; | |
4332 | } | |
4333 | ||
45452591 DE |
4334 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
4335 | ||
4336 | static inline int | |
b64f50a1 | 4337 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 4338 | { |
b64f50a1 | 4339 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 4340 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 4341 | |
b64f50a1 | 4342 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
4343 | } |
4344 | ||
3b80fe9b DE |
4345 | /* Find the base address of the compilation unit for range lists and |
4346 | location lists. It will normally be specified by DW_AT_low_pc. | |
4347 | In DWARF-3 draft 4, the base address could be overridden by | |
4348 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
4349 | compilation units with discontinuous ranges. */ | |
4350 | ||
4351 | static void | |
4352 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
4353 | { | |
4354 | struct attribute *attr; | |
4355 | ||
4356 | cu->base_known = 0; | |
4357 | cu->base_address = 0; | |
4358 | ||
4359 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
4360 | if (attr) | |
4361 | { | |
31aa7e4e | 4362 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4363 | cu->base_known = 1; |
4364 | } | |
4365 | else | |
4366 | { | |
4367 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4368 | if (attr) | |
4369 | { | |
31aa7e4e | 4370 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4371 | cu->base_known = 1; |
4372 | } | |
4373 | } | |
4374 | } | |
4375 | ||
93311388 | 4376 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 4377 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
4378 | NOTE: This leaves members offset, first_die_offset to be filled in |
4379 | by the caller. */ | |
107d2387 | 4380 | |
d521ce57 | 4381 | static const gdb_byte * |
107d2387 | 4382 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
4383 | const gdb_byte *info_ptr, |
4384 | struct dwarf2_section_info *section, | |
4385 | rcuh_kind section_kind) | |
107d2387 AC |
4386 | { |
4387 | int signed_addr; | |
891d2f0b | 4388 | unsigned int bytes_read; |
43988095 JK |
4389 | const char *filename = get_section_file_name (section); |
4390 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
4391 | |
4392 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
4393 | cu_header->initial_length_size = bytes_read; | |
4394 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 4395 | info_ptr += bytes_read; |
107d2387 AC |
4396 | cu_header->version = read_2_bytes (abfd, info_ptr); |
4397 | info_ptr += 2; | |
43988095 JK |
4398 | if (cu_header->version < 5) |
4399 | switch (section_kind) | |
4400 | { | |
4401 | case rcuh_kind::COMPILE: | |
4402 | cu_header->unit_type = DW_UT_compile; | |
4403 | break; | |
4404 | case rcuh_kind::TYPE: | |
4405 | cu_header->unit_type = DW_UT_type; | |
4406 | break; | |
4407 | default: | |
4408 | internal_error (__FILE__, __LINE__, | |
4409 | _("read_comp_unit_head: invalid section_kind")); | |
4410 | } | |
4411 | else | |
4412 | { | |
4413 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
4414 | (read_1_byte (abfd, info_ptr)); | |
4415 | info_ptr += 1; | |
4416 | switch (cu_header->unit_type) | |
4417 | { | |
4418 | case DW_UT_compile: | |
4419 | if (section_kind != rcuh_kind::COMPILE) | |
4420 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
4421 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
4422 | filename); | |
4423 | break; | |
4424 | case DW_UT_type: | |
4425 | section_kind = rcuh_kind::TYPE; | |
4426 | break; | |
4427 | default: | |
4428 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
4429 | "(is %d, should be %d or %d) [in module %s]"), | |
4430 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
4431 | } | |
4432 | ||
4433 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
4434 | info_ptr += 1; | |
4435 | } | |
b64f50a1 JK |
4436 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
4437 | &bytes_read); | |
613e1657 | 4438 | info_ptr += bytes_read; |
43988095 JK |
4439 | if (cu_header->version < 5) |
4440 | { | |
4441 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
4442 | info_ptr += 1; | |
4443 | } | |
107d2387 AC |
4444 | signed_addr = bfd_get_sign_extend_vma (abfd); |
4445 | if (signed_addr < 0) | |
8e65ff28 | 4446 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4447 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 4448 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 4449 | |
43988095 JK |
4450 | if (section_kind == rcuh_kind::TYPE) |
4451 | { | |
4452 | LONGEST type_offset; | |
4453 | ||
4454 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
4455 | info_ptr += 8; | |
4456 | ||
4457 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
4458 | info_ptr += bytes_read; | |
4459 | cu_header->type_offset_in_tu.cu_off = type_offset; | |
4460 | if (cu_header->type_offset_in_tu.cu_off != type_offset) | |
4461 | error (_("Dwarf Error: Too big type_offset in compilation unit " | |
4462 | "header (is %s) [in module %s]"), plongest (type_offset), | |
4463 | filename); | |
4464 | } | |
4465 | ||
107d2387 AC |
4466 | return info_ptr; |
4467 | } | |
4468 | ||
36586728 TT |
4469 | /* Helper function that returns the proper abbrev section for |
4470 | THIS_CU. */ | |
4471 | ||
4472 | static struct dwarf2_section_info * | |
4473 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
4474 | { | |
4475 | struct dwarf2_section_info *abbrev; | |
4476 | ||
4477 | if (this_cu->is_dwz) | |
4478 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
4479 | else | |
4480 | abbrev = &dwarf2_per_objfile->abbrev; | |
4481 | ||
4482 | return abbrev; | |
4483 | } | |
4484 | ||
9ff913ba DE |
4485 | /* Subroutine of read_and_check_comp_unit_head and |
4486 | read_and_check_type_unit_head to simplify them. | |
4487 | Perform various error checking on the header. */ | |
4488 | ||
4489 | static void | |
4490 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
4491 | struct dwarf2_section_info *section, |
4492 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 4493 | { |
a32a8923 | 4494 | const char *filename = get_section_file_name (section); |
9ff913ba | 4495 | |
43988095 | 4496 | if (header->version < 2 || header->version > 5) |
9ff913ba | 4497 | error (_("Dwarf Error: wrong version in compilation unit header " |
43988095 | 4498 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), header->version, |
9ff913ba DE |
4499 | filename); |
4500 | ||
b64f50a1 | 4501 | if (header->abbrev_offset.sect_off |
36586728 | 4502 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
4503 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
4504 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 4505 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
4506 | filename); |
4507 | ||
4508 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
4509 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4510 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4511 | > section->size) |
4512 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4513 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4514 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4515 | filename); |
4516 | } | |
4517 | ||
4518 | /* Read in a CU/TU header and perform some basic error checking. | |
4519 | The contents of the header are stored in HEADER. | |
4520 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4521 | |
d521ce57 | 4522 | static const gdb_byte * |
9ff913ba DE |
4523 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4524 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4525 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4526 | const gdb_byte *info_ptr, |
43988095 | 4527 | rcuh_kind section_kind) |
72bf9492 | 4528 | { |
d521ce57 | 4529 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4530 | bfd *abfd = get_section_bfd_owner (section); |
72bf9492 | 4531 | |
b64f50a1 | 4532 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4533 | |
43988095 | 4534 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 4535 | |
b64f50a1 | 4536 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4537 | |
4bdcc0c1 | 4538 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4539 | |
4540 | return info_ptr; | |
348e048f DE |
4541 | } |
4542 | ||
f4dc4d17 DE |
4543 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4544 | ||
4545 | static sect_offset | |
4546 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4547 | sect_offset offset) | |
4548 | { | |
a32a8923 | 4549 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 4550 | const gdb_byte *info_ptr; |
ac298888 | 4551 | unsigned int initial_length_size, offset_size; |
f4dc4d17 | 4552 | sect_offset abbrev_offset; |
43988095 | 4553 | uint16_t version; |
f4dc4d17 DE |
4554 | |
4555 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4556 | info_ptr = section->buffer + offset.sect_off; | |
ac298888 | 4557 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 4558 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
4559 | info_ptr += initial_length_size; |
4560 | ||
4561 | version = read_2_bytes (abfd, info_ptr); | |
4562 | info_ptr += 2; | |
4563 | if (version >= 5) | |
4564 | { | |
4565 | /* Skip unit type and address size. */ | |
4566 | info_ptr += 2; | |
4567 | } | |
4568 | ||
f4dc4d17 DE |
4569 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); |
4570 | return abbrev_offset; | |
4571 | } | |
4572 | ||
aaa75496 JB |
4573 | /* Allocate a new partial symtab for file named NAME and mark this new |
4574 | partial symtab as being an include of PST. */ | |
4575 | ||
4576 | static void | |
d521ce57 | 4577 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
4578 | struct objfile *objfile) |
4579 | { | |
4580 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4581 | ||
fbd9ab74 JK |
4582 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4583 | { | |
4584 | /* It shares objfile->objfile_obstack. */ | |
4585 | subpst->dirname = pst->dirname; | |
4586 | } | |
4587 | ||
aaa75496 JB |
4588 | subpst->textlow = 0; |
4589 | subpst->texthigh = 0; | |
4590 | ||
8d749320 SM |
4591 | subpst->dependencies |
4592 | = XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
aaa75496 JB |
4593 | subpst->dependencies[0] = pst; |
4594 | subpst->number_of_dependencies = 1; | |
4595 | ||
4596 | subpst->globals_offset = 0; | |
4597 | subpst->n_global_syms = 0; | |
4598 | subpst->statics_offset = 0; | |
4599 | subpst->n_static_syms = 0; | |
43f3e411 | 4600 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
4601 | subpst->read_symtab = pst->read_symtab; |
4602 | subpst->readin = 0; | |
4603 | ||
4604 | /* No private part is necessary for include psymtabs. This property | |
4605 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4606 | the regular ones. */ |
58a9656e | 4607 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4608 | } |
4609 | ||
4610 | /* Read the Line Number Program data and extract the list of files | |
4611 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4612 | partial symtab for each of these included files. */ |
aaa75496 JB |
4613 | |
4614 | static void | |
4615 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4616 | struct die_info *die, |
4617 | struct partial_symtab *pst) | |
aaa75496 | 4618 | { |
d85a05f0 DJ |
4619 | struct line_header *lh = NULL; |
4620 | struct attribute *attr; | |
aaa75496 | 4621 | |
d85a05f0 DJ |
4622 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4623 | if (attr) | |
3019eac3 | 4624 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4625 | if (lh == NULL) |
4626 | return; /* No linetable, so no includes. */ | |
4627 | ||
c6da4cef | 4628 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
527f3840 | 4629 | dwarf_decode_lines (lh, pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
4630 | |
4631 | free_line_header (lh); | |
4632 | } | |
4633 | ||
348e048f | 4634 | static hashval_t |
52dc124a | 4635 | hash_signatured_type (const void *item) |
348e048f | 4636 | { |
9a3c8263 SM |
4637 | const struct signatured_type *sig_type |
4638 | = (const struct signatured_type *) item; | |
9a619af0 | 4639 | |
348e048f | 4640 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4641 | return sig_type->signature; |
348e048f DE |
4642 | } |
4643 | ||
4644 | static int | |
52dc124a | 4645 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 4646 | { |
9a3c8263 SM |
4647 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
4648 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 4649 | |
348e048f DE |
4650 | return lhs->signature == rhs->signature; |
4651 | } | |
4652 | ||
1fd400ff TT |
4653 | /* Allocate a hash table for signatured types. */ |
4654 | ||
4655 | static htab_t | |
673bfd45 | 4656 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4657 | { |
4658 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4659 | hash_signatured_type, |
4660 | eq_signatured_type, | |
1fd400ff TT |
4661 | NULL, |
4662 | &objfile->objfile_obstack, | |
4663 | hashtab_obstack_allocate, | |
4664 | dummy_obstack_deallocate); | |
4665 | } | |
4666 | ||
d467dd73 | 4667 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4668 | |
4669 | static int | |
d467dd73 | 4670 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 4671 | { |
9a3c8263 SM |
4672 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
4673 | struct signatured_type ***datap = (struct signatured_type ***) datum; | |
1fd400ff | 4674 | |
b4dd5633 | 4675 | **datap = sigt; |
1fd400ff TT |
4676 | ++*datap; |
4677 | ||
4678 | return 1; | |
4679 | } | |
4680 | ||
78d4d2c5 | 4681 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
4682 | and fill them into TYPES_HTAB. It will process only type units, |
4683 | therefore DW_UT_type. */ | |
c88ee1f0 | 4684 | |
78d4d2c5 JK |
4685 | static void |
4686 | create_debug_type_hash_table (struct dwo_file *dwo_file, | |
43988095 JK |
4687 | dwarf2_section_info *section, htab_t &types_htab, |
4688 | rcuh_kind section_kind) | |
348e048f | 4689 | { |
3019eac3 | 4690 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 4691 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
4692 | bfd *abfd; |
4693 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 4694 | |
4bdcc0c1 DE |
4695 | abbrev_section = (dwo_file != NULL |
4696 | ? &dwo_file->sections.abbrev | |
4697 | : &dwarf2_per_objfile->abbrev); | |
4698 | ||
b4f54984 | 4699 | if (dwarf_read_debug) |
43988095 JK |
4700 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
4701 | get_section_name (section), | |
a32a8923 | 4702 | get_section_file_name (abbrev_section)); |
09406207 | 4703 | |
78d4d2c5 JK |
4704 | dwarf2_read_section (objfile, section); |
4705 | info_ptr = section->buffer; | |
348e048f | 4706 | |
78d4d2c5 JK |
4707 | if (info_ptr == NULL) |
4708 | return; | |
348e048f | 4709 | |
78d4d2c5 JK |
4710 | /* We can't set abfd until now because the section may be empty or |
4711 | not present, in which case the bfd is unknown. */ | |
4712 | abfd = get_section_bfd_owner (section); | |
348e048f | 4713 | |
78d4d2c5 JK |
4714 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4715 | because we don't need to read any dies: the signature is in the | |
4716 | header. */ | |
3019eac3 | 4717 | |
78d4d2c5 JK |
4718 | end_ptr = info_ptr + section->size; |
4719 | while (info_ptr < end_ptr) | |
4720 | { | |
4721 | sect_offset offset; | |
78d4d2c5 JK |
4722 | struct signatured_type *sig_type; |
4723 | struct dwo_unit *dwo_tu; | |
4724 | void **slot; | |
4725 | const gdb_byte *ptr = info_ptr; | |
4726 | struct comp_unit_head header; | |
4727 | unsigned int length; | |
8b70b953 | 4728 | |
78d4d2c5 | 4729 | offset.sect_off = ptr - section->buffer; |
348e048f | 4730 | |
a49dd8dd JK |
4731 | /* Initialize it due to a false compiler warning. */ |
4732 | header.signature = -1; | |
4733 | header.type_offset_in_tu.cu_off = -1; | |
4734 | ||
78d4d2c5 JK |
4735 | /* We need to read the type's signature in order to build the hash |
4736 | table, but we don't need anything else just yet. */ | |
348e048f | 4737 | |
43988095 JK |
4738 | ptr = read_and_check_comp_unit_head (&header, section, |
4739 | abbrev_section, ptr, section_kind); | |
348e048f | 4740 | |
78d4d2c5 | 4741 | length = get_cu_length (&header); |
6caca83c | 4742 | |
78d4d2c5 JK |
4743 | /* Skip dummy type units. */ |
4744 | if (ptr >= info_ptr + length | |
43988095 JK |
4745 | || peek_abbrev_code (abfd, ptr) == 0 |
4746 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
4747 | { |
4748 | info_ptr += length; | |
4749 | continue; | |
4750 | } | |
dee91e82 | 4751 | |
78d4d2c5 JK |
4752 | if (types_htab == NULL) |
4753 | { | |
4754 | if (dwo_file) | |
4755 | types_htab = allocate_dwo_unit_table (objfile); | |
4756 | else | |
4757 | types_htab = allocate_signatured_type_table (objfile); | |
4758 | } | |
8b70b953 | 4759 | |
78d4d2c5 JK |
4760 | if (dwo_file) |
4761 | { | |
4762 | sig_type = NULL; | |
4763 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4764 | struct dwo_unit); | |
4765 | dwo_tu->dwo_file = dwo_file; | |
43988095 JK |
4766 | dwo_tu->signature = header.signature; |
4767 | dwo_tu->type_offset_in_tu = header.type_offset_in_tu; | |
78d4d2c5 JK |
4768 | dwo_tu->section = section; |
4769 | dwo_tu->offset = offset; | |
4770 | dwo_tu->length = length; | |
4771 | } | |
4772 | else | |
4773 | { | |
4774 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4775 | The real type_offset is in the DWO file. */ | |
4776 | dwo_tu = NULL; | |
4777 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4778 | struct signatured_type); | |
43988095 JK |
4779 | sig_type->signature = header.signature; |
4780 | sig_type->type_offset_in_tu = header.type_offset_in_tu; | |
78d4d2c5 JK |
4781 | sig_type->per_cu.objfile = objfile; |
4782 | sig_type->per_cu.is_debug_types = 1; | |
4783 | sig_type->per_cu.section = section; | |
4784 | sig_type->per_cu.offset = offset; | |
4785 | sig_type->per_cu.length = length; | |
4786 | } | |
4787 | ||
4788 | slot = htab_find_slot (types_htab, | |
4789 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4790 | INSERT); | |
4791 | gdb_assert (slot != NULL); | |
4792 | if (*slot != NULL) | |
4793 | { | |
4794 | sect_offset dup_offset; | |
0349ea22 | 4795 | |
3019eac3 DE |
4796 | if (dwo_file) |
4797 | { | |
78d4d2c5 JK |
4798 | const struct dwo_unit *dup_tu |
4799 | = (const struct dwo_unit *) *slot; | |
4800 | ||
4801 | dup_offset = dup_tu->offset; | |
3019eac3 DE |
4802 | } |
4803 | else | |
4804 | { | |
78d4d2c5 JK |
4805 | const struct signatured_type *dup_tu |
4806 | = (const struct signatured_type *) *slot; | |
4807 | ||
4808 | dup_offset = dup_tu->per_cu.offset; | |
3019eac3 | 4809 | } |
8b70b953 | 4810 | |
78d4d2c5 JK |
4811 | complaint (&symfile_complaints, |
4812 | _("debug type entry at offset 0x%x is duplicate to" | |
4813 | " the entry at offset 0x%x, signature %s"), | |
4814 | offset.sect_off, dup_offset.sect_off, | |
43988095 | 4815 | hex_string (header.signature)); |
78d4d2c5 JK |
4816 | } |
4817 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 4818 | |
78d4d2c5 JK |
4819 | if (dwarf_read_debug > 1) |
4820 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", | |
4821 | offset.sect_off, | |
43988095 | 4822 | hex_string (header.signature)); |
3019eac3 | 4823 | |
78d4d2c5 JK |
4824 | info_ptr += length; |
4825 | } | |
4826 | } | |
3019eac3 | 4827 | |
78d4d2c5 JK |
4828 | /* Create the hash table of all entries in the .debug_types |
4829 | (or .debug_types.dwo) section(s). | |
4830 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4831 | otherwise it is NULL. | |
b3c8eb43 | 4832 | |
78d4d2c5 | 4833 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 4834 | |
78d4d2c5 | 4835 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 4836 | |
78d4d2c5 JK |
4837 | static void |
4838 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4839 | VEC (dwarf2_section_info_def) *types, | |
4840 | htab_t &types_htab) | |
4841 | { | |
4842 | int ix; | |
4843 | struct dwarf2_section_info *section; | |
4844 | ||
4845 | if (VEC_empty (dwarf2_section_info_def, types)) | |
4846 | return; | |
348e048f | 4847 | |
78d4d2c5 JK |
4848 | for (ix = 0; |
4849 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
4850 | ++ix) | |
43988095 JK |
4851 | create_debug_type_hash_table (dwo_file, section, types_htab, |
4852 | rcuh_kind::TYPE); | |
3019eac3 DE |
4853 | } |
4854 | ||
4855 | /* Create the hash table of all entries in the .debug_types section, | |
4856 | and initialize all_type_units. | |
4857 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4858 | otherwise non-zero. */ | |
4859 | ||
4860 | static int | |
4861 | create_all_type_units (struct objfile *objfile) | |
4862 | { | |
78d4d2c5 | 4863 | htab_t types_htab = NULL; |
b4dd5633 | 4864 | struct signatured_type **iter; |
3019eac3 | 4865 | |
43988095 JK |
4866 | create_debug_type_hash_table (NULL, &dwarf2_per_objfile->info, types_htab, |
4867 | rcuh_kind::COMPILE); | |
78d4d2c5 | 4868 | create_debug_types_hash_table (NULL, dwarf2_per_objfile->types, types_htab); |
3019eac3 DE |
4869 | if (types_htab == NULL) |
4870 | { | |
4871 | dwarf2_per_objfile->signatured_types = NULL; | |
4872 | return 0; | |
4873 | } | |
4874 | ||
348e048f DE |
4875 | dwarf2_per_objfile->signatured_types = types_htab; |
4876 | ||
6aa5f3a6 DE |
4877 | dwarf2_per_objfile->n_type_units |
4878 | = dwarf2_per_objfile->n_allocated_type_units | |
4879 | = htab_elements (types_htab); | |
8d749320 SM |
4880 | dwarf2_per_objfile->all_type_units = |
4881 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
d467dd73 DE |
4882 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4883 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4884 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4885 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4886 | |
348e048f DE |
4887 | return 1; |
4888 | } | |
4889 | ||
6aa5f3a6 DE |
4890 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
4891 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
4892 | Otherwise we find one. */ | |
4893 | ||
4894 | static struct signatured_type * | |
4895 | add_type_unit (ULONGEST sig, void **slot) | |
4896 | { | |
4897 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4898 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
4899 | struct signatured_type *sig_type; | |
4900 | ||
4901 | gdb_assert (n_type_units <= dwarf2_per_objfile->n_allocated_type_units); | |
4902 | ++n_type_units; | |
4903 | if (n_type_units > dwarf2_per_objfile->n_allocated_type_units) | |
4904 | { | |
4905 | if (dwarf2_per_objfile->n_allocated_type_units == 0) | |
4906 | dwarf2_per_objfile->n_allocated_type_units = 1; | |
4907 | dwarf2_per_objfile->n_allocated_type_units *= 2; | |
4908 | dwarf2_per_objfile->all_type_units | |
224c3ddb SM |
4909 | = XRESIZEVEC (struct signatured_type *, |
4910 | dwarf2_per_objfile->all_type_units, | |
4911 | dwarf2_per_objfile->n_allocated_type_units); | |
6aa5f3a6 DE |
4912 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; |
4913 | } | |
4914 | dwarf2_per_objfile->n_type_units = n_type_units; | |
4915 | ||
4916 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4917 | struct signatured_type); | |
4918 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
4919 | sig_type->signature = sig; | |
4920 | sig_type->per_cu.is_debug_types = 1; | |
4921 | if (dwarf2_per_objfile->using_index) | |
4922 | { | |
4923 | sig_type->per_cu.v.quick = | |
4924 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4925 | struct dwarf2_per_cu_quick_data); | |
4926 | } | |
4927 | ||
4928 | if (slot == NULL) | |
4929 | { | |
4930 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4931 | sig_type, INSERT); | |
4932 | } | |
4933 | gdb_assert (*slot == NULL); | |
4934 | *slot = sig_type; | |
4935 | /* The rest of sig_type must be filled in by the caller. */ | |
4936 | return sig_type; | |
4937 | } | |
4938 | ||
a2ce51a0 DE |
4939 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
4940 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
4941 | ||
4942 | static void | |
4943 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
4944 | struct signatured_type *sig_entry, | |
4945 | struct dwo_unit *dwo_entry) | |
4946 | { | |
7ee85ab1 | 4947 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
4948 | gdb_assert (! sig_entry->per_cu.queued); |
4949 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
4950 | if (dwarf2_per_objfile->using_index) |
4951 | { | |
4952 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 4953 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
4954 | } |
4955 | else | |
4956 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 DE |
4957 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
4958 | gdb_assert (sig_entry->type_offset_in_section.sect_off == 0); | |
4959 | gdb_assert (sig_entry->type_unit_group == NULL); | |
7ee85ab1 DE |
4960 | gdb_assert (sig_entry->dwo_unit == NULL); |
4961 | ||
4962 | sig_entry->per_cu.section = dwo_entry->section; | |
4963 | sig_entry->per_cu.offset = dwo_entry->offset; | |
4964 | sig_entry->per_cu.length = dwo_entry->length; | |
4965 | sig_entry->per_cu.reading_dwo_directly = 1; | |
4966 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
4967 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
4968 | sig_entry->dwo_unit = dwo_entry; | |
4969 | } | |
4970 | ||
4971 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
4972 | If we haven't read the TU yet, create the signatured_type data structure |
4973 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
4974 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
4975 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
4976 | containing that CU. Otherwise we could end up reading several other DWO | |
4977 | files (due to comdat folding) to process the transitive closure of all the | |
4978 | mentioned TUs, and that can be slow. The current DWO file will have every | |
4979 | type signature that it needs. | |
a2ce51a0 DE |
4980 | We only do this for .gdb_index because in the psymtab case we already have |
4981 | to read all the DWOs to build the type unit groups. */ | |
4982 | ||
4983 | static struct signatured_type * | |
4984 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4985 | { | |
4986 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4987 | struct dwo_file *dwo_file; | |
4988 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
4989 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 4990 | void **slot; |
a2ce51a0 DE |
4991 | |
4992 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4993 | ||
6aa5f3a6 DE |
4994 | /* If TU skeletons have been removed then we may not have read in any |
4995 | TUs yet. */ | |
4996 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4997 | { | |
4998 | dwarf2_per_objfile->signatured_types | |
4999 | = allocate_signatured_type_table (objfile); | |
5000 | } | |
a2ce51a0 DE |
5001 | |
5002 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
5003 | Use the global signatured_types array to do our own comdat-folding |
5004 | of types. If this is the first time we're reading this TU, and | |
5005 | the TU has an entry in .gdb_index, replace the recorded data from | |
5006 | .gdb_index with this TU. */ | |
a2ce51a0 | 5007 | |
a2ce51a0 | 5008 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
5009 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
5010 | &find_sig_entry, INSERT); | |
9a3c8263 | 5011 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
5012 | |
5013 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
5014 | read. Don't reassign the global entry to point to this DWO if that's |
5015 | the case. Also note that if the TU is already being read, it may not | |
5016 | have come from a DWO, the program may be a mix of Fission-compiled | |
5017 | code and non-Fission-compiled code. */ | |
5018 | ||
5019 | /* Have we already tried to read this TU? | |
5020 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
5021 | needn't exist in the global table yet). */ | |
5022 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
5023 | return sig_entry; |
5024 | ||
6aa5f3a6 DE |
5025 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
5026 | dwo_unit of the TU itself. */ | |
5027 | dwo_file = cu->dwo_unit->dwo_file; | |
5028 | ||
a2ce51a0 DE |
5029 | /* Ok, this is the first time we're reading this TU. */ |
5030 | if (dwo_file->tus == NULL) | |
5031 | return NULL; | |
5032 | find_dwo_entry.signature = sig; | |
9a3c8263 | 5033 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
5034 | if (dwo_entry == NULL) |
5035 | return NULL; | |
5036 | ||
6aa5f3a6 DE |
5037 | /* If the global table doesn't have an entry for this TU, add one. */ |
5038 | if (sig_entry == NULL) | |
5039 | sig_entry = add_type_unit (sig, slot); | |
5040 | ||
a2ce51a0 | 5041 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
89e63ee4 | 5042 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
5043 | return sig_entry; |
5044 | } | |
5045 | ||
a2ce51a0 DE |
5046 | /* Subroutine of lookup_signatured_type. |
5047 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
5048 | then try the DWP file. If the TU stub (skeleton) has been removed then |
5049 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
5050 | |
5051 | static struct signatured_type * | |
5052 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
5053 | { | |
5054 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5055 | struct dwp_file *dwp_file = get_dwp_file (); | |
5056 | struct dwo_unit *dwo_entry; | |
5057 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 5058 | void **slot; |
a2ce51a0 DE |
5059 | |
5060 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
5061 | gdb_assert (dwp_file != NULL); | |
5062 | ||
6aa5f3a6 DE |
5063 | /* If TU skeletons have been removed then we may not have read in any |
5064 | TUs yet. */ | |
5065 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 5066 | { |
6aa5f3a6 DE |
5067 | dwarf2_per_objfile->signatured_types |
5068 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
5069 | } |
5070 | ||
6aa5f3a6 DE |
5071 | find_sig_entry.signature = sig; |
5072 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
5073 | &find_sig_entry, INSERT); | |
9a3c8263 | 5074 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
5075 | |
5076 | /* Have we already tried to read this TU? | |
5077 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
5078 | needn't exist in the global table yet). */ | |
5079 | if (sig_entry != NULL) | |
5080 | return sig_entry; | |
5081 | ||
a2ce51a0 DE |
5082 | if (dwp_file->tus == NULL) |
5083 | return NULL; | |
57d63ce2 DE |
5084 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
5085 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
5086 | if (dwo_entry == NULL) |
5087 | return NULL; | |
5088 | ||
6aa5f3a6 | 5089 | sig_entry = add_type_unit (sig, slot); |
a2ce51a0 DE |
5090 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
5091 | ||
a2ce51a0 DE |
5092 | return sig_entry; |
5093 | } | |
5094 | ||
380bca97 | 5095 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
5096 | Returns NULL if signature SIG is not present in the table. |
5097 | It is up to the caller to complain about this. */ | |
348e048f DE |
5098 | |
5099 | static struct signatured_type * | |
a2ce51a0 | 5100 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 5101 | { |
a2ce51a0 DE |
5102 | if (cu->dwo_unit |
5103 | && dwarf2_per_objfile->using_index) | |
5104 | { | |
5105 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
5106 | These cases require special processing. */ | |
5107 | if (get_dwp_file () == NULL) | |
5108 | return lookup_dwo_signatured_type (cu, sig); | |
5109 | else | |
5110 | return lookup_dwp_signatured_type (cu, sig); | |
5111 | } | |
5112 | else | |
5113 | { | |
5114 | struct signatured_type find_entry, *entry; | |
348e048f | 5115 | |
a2ce51a0 DE |
5116 | if (dwarf2_per_objfile->signatured_types == NULL) |
5117 | return NULL; | |
5118 | find_entry.signature = sig; | |
9a3c8263 SM |
5119 | entry = ((struct signatured_type *) |
5120 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
5121 | return entry; |
5122 | } | |
348e048f | 5123 | } |
42e7ad6c DE |
5124 | \f |
5125 | /* Low level DIE reading support. */ | |
348e048f | 5126 | |
d85a05f0 DJ |
5127 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
5128 | ||
5129 | static void | |
5130 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 5131 | struct dwarf2_cu *cu, |
3019eac3 DE |
5132 | struct dwarf2_section_info *section, |
5133 | struct dwo_file *dwo_file) | |
d85a05f0 | 5134 | { |
fceca515 | 5135 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 5136 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 5137 | reader->cu = cu; |
3019eac3 | 5138 | reader->dwo_file = dwo_file; |
dee91e82 DE |
5139 | reader->die_section = section; |
5140 | reader->buffer = section->buffer; | |
f664829e | 5141 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 5142 | reader->comp_dir = NULL; |
d85a05f0 DJ |
5143 | } |
5144 | ||
b0c7bfa9 DE |
5145 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
5146 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
5147 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
5148 | already. | |
5149 | ||
5150 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
5151 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
5152 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
5153 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
5154 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
5155 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
5156 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
5157 | are filled in with the info of the DIE from the DWO file. | |
5158 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
5159 | provided an abbrev table to use. | |
5160 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
5161 | ||
5162 | static int | |
5163 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
5164 | struct dwo_unit *dwo_unit, | |
5165 | int abbrev_table_provided, | |
5166 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 5167 | const char *stub_comp_dir, |
b0c7bfa9 | 5168 | struct die_reader_specs *result_reader, |
d521ce57 | 5169 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
5170 | struct die_info **result_comp_unit_die, |
5171 | int *result_has_children) | |
5172 | { | |
5173 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5174 | struct dwarf2_cu *cu = this_cu->cu; | |
5175 | struct dwarf2_section_info *section; | |
5176 | bfd *abfd; | |
d521ce57 | 5177 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
5178 | ULONGEST signature; /* Or dwo_id. */ |
5179 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
5180 | int i,num_extra_attrs; | |
5181 | struct dwarf2_section_info *dwo_abbrev_section; | |
5182 | struct attribute *attr; | |
5183 | struct die_info *comp_unit_die; | |
5184 | ||
b0aeadb3 DE |
5185 | /* At most one of these may be provided. */ |
5186 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 5187 | |
b0c7bfa9 DE |
5188 | /* These attributes aren't processed until later: |
5189 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
5190 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
5191 | referenced later. However, these attributes are found in the stub | |
5192 | which we won't have later. In order to not impose this complication | |
5193 | on the rest of the code, we read them here and copy them to the | |
5194 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
5195 | |
5196 | stmt_list = NULL; | |
5197 | low_pc = NULL; | |
5198 | high_pc = NULL; | |
5199 | ranges = NULL; | |
5200 | comp_dir = NULL; | |
5201 | ||
5202 | if (stub_comp_unit_die != NULL) | |
5203 | { | |
5204 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
5205 | DWO file. */ | |
5206 | if (! this_cu->is_debug_types) | |
5207 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
5208 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
5209 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
5210 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
5211 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
5212 | ||
5213 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
5214 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
5215 | cu->addr_base = 0; | |
5216 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
5217 | if (attr) | |
5218 | cu->addr_base = DW_UNSND (attr); | |
5219 | ||
5220 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
5221 | We need the value before we can process DW_AT_ranges. */ | |
5222 | cu->ranges_base = 0; | |
5223 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
5224 | if (attr) | |
5225 | cu->ranges_base = DW_UNSND (attr); | |
5226 | } | |
a2ce51a0 DE |
5227 | else if (stub_comp_dir != NULL) |
5228 | { | |
5229 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 5230 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
5231 | comp_dir->name = DW_AT_comp_dir; |
5232 | comp_dir->form = DW_FORM_string; | |
5233 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
5234 | DW_STRING (comp_dir) = stub_comp_dir; | |
5235 | } | |
b0c7bfa9 DE |
5236 | |
5237 | /* Set up for reading the DWO CU/TU. */ | |
5238 | cu->dwo_unit = dwo_unit; | |
5239 | section = dwo_unit->section; | |
5240 | dwarf2_read_section (objfile, section); | |
a32a8923 | 5241 | abfd = get_section_bfd_owner (section); |
b0c7bfa9 DE |
5242 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
5243 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; | |
5244 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
5245 | ||
5246 | if (this_cu->is_debug_types) | |
5247 | { | |
b0c7bfa9 DE |
5248 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
5249 | ||
43988095 | 5250 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
b0c7bfa9 | 5251 | dwo_abbrev_section, |
43988095 | 5252 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 5253 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 5254 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
5255 | { |
5256 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
5257 | " TU at offset 0x%x [in module %s]"), | |
5258 | hex_string (sig_type->signature), | |
43988095 | 5259 | hex_string (cu->header.signature), |
a2ce51a0 DE |
5260 | dwo_unit->offset.sect_off, |
5261 | bfd_get_filename (abfd)); | |
5262 | } | |
b0c7bfa9 DE |
5263 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
5264 | /* For DWOs coming from DWP files, we don't know the CU length | |
5265 | nor the type's offset in the TU until now. */ | |
5266 | dwo_unit->length = get_cu_length (&cu->header); | |
43988095 | 5267 | dwo_unit->type_offset_in_tu = cu->header.type_offset_in_tu; |
b0c7bfa9 DE |
5268 | |
5269 | /* Establish the type offset that can be used to lookup the type. | |
5270 | For DWO files, we don't know it until now. */ | |
5271 | sig_type->type_offset_in_section.sect_off = | |
5272 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
5273 | } | |
5274 | else | |
5275 | { | |
5276 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
5277 | dwo_abbrev_section, | |
43988095 | 5278 | info_ptr, rcuh_kind::COMPILE); |
b0c7bfa9 DE |
5279 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
5280 | /* For DWOs coming from DWP files, we don't know the CU length | |
5281 | until now. */ | |
5282 | dwo_unit->length = get_cu_length (&cu->header); | |
5283 | } | |
5284 | ||
02142a6c DE |
5285 | /* Replace the CU's original abbrev table with the DWO's. |
5286 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
5287 | if (abbrev_table_provided) |
5288 | { | |
5289 | /* Don't free the provided abbrev table, the caller of | |
5290 | init_cutu_and_read_dies owns it. */ | |
5291 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5292 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
5293 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5294 | } | |
5295 | else | |
5296 | { | |
5297 | dwarf2_free_abbrev_table (cu); | |
5298 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5299 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
5300 | } |
5301 | ||
5302 | /* Read in the die, but leave space to copy over the attributes | |
5303 | from the stub. This has the benefit of simplifying the rest of | |
5304 | the code - all the work to maintain the illusion of a single | |
5305 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
5306 | num_extra_attrs = ((stmt_list != NULL) | |
5307 | + (low_pc != NULL) | |
5308 | + (high_pc != NULL) | |
5309 | + (ranges != NULL) | |
5310 | + (comp_dir != NULL)); | |
5311 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
5312 | result_has_children, num_extra_attrs); | |
5313 | ||
5314 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
5315 | comp_unit_die = *result_comp_unit_die; | |
5316 | i = comp_unit_die->num_attrs; | |
5317 | if (stmt_list != NULL) | |
5318 | comp_unit_die->attrs[i++] = *stmt_list; | |
5319 | if (low_pc != NULL) | |
5320 | comp_unit_die->attrs[i++] = *low_pc; | |
5321 | if (high_pc != NULL) | |
5322 | comp_unit_die->attrs[i++] = *high_pc; | |
5323 | if (ranges != NULL) | |
5324 | comp_unit_die->attrs[i++] = *ranges; | |
5325 | if (comp_dir != NULL) | |
5326 | comp_unit_die->attrs[i++] = *comp_dir; | |
5327 | comp_unit_die->num_attrs += num_extra_attrs; | |
5328 | ||
b4f54984 | 5329 | if (dwarf_die_debug) |
bf6af496 DE |
5330 | { |
5331 | fprintf_unfiltered (gdb_stdlog, | |
5332 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 5333 | get_section_name (section), |
bf6af496 DE |
5334 | (unsigned) (begin_info_ptr - section->buffer), |
5335 | bfd_get_filename (abfd)); | |
b4f54984 | 5336 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
5337 | } |
5338 | ||
a2ce51a0 DE |
5339 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
5340 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
5341 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
5342 | to get it via circuitous means. Blech. */ | |
5343 | if (comp_dir != NULL) | |
5344 | result_reader->comp_dir = DW_STRING (comp_dir); | |
5345 | ||
b0c7bfa9 DE |
5346 | /* Skip dummy compilation units. */ |
5347 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
5348 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
5349 | return 0; | |
5350 | ||
5351 | *result_info_ptr = info_ptr; | |
5352 | return 1; | |
5353 | } | |
5354 | ||
5355 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
5356 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 5357 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
5358 | |
5359 | static struct dwo_unit * | |
5360 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
5361 | struct die_info *comp_unit_die) | |
5362 | { | |
5363 | struct dwarf2_cu *cu = this_cu->cu; | |
5364 | struct attribute *attr; | |
5365 | ULONGEST signature; | |
5366 | struct dwo_unit *dwo_unit; | |
5367 | const char *comp_dir, *dwo_name; | |
5368 | ||
a2ce51a0 DE |
5369 | gdb_assert (cu != NULL); |
5370 | ||
b0c7bfa9 | 5371 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
5372 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5373 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
5374 | |
5375 | if (this_cu->is_debug_types) | |
5376 | { | |
5377 | struct signatured_type *sig_type; | |
5378 | ||
5379 | /* Since this_cu is the first member of struct signatured_type, | |
5380 | we can go from a pointer to one to a pointer to the other. */ | |
5381 | sig_type = (struct signatured_type *) this_cu; | |
5382 | signature = sig_type->signature; | |
5383 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
5384 | } | |
5385 | else | |
5386 | { | |
5387 | struct attribute *attr; | |
5388 | ||
5389 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
5390 | if (! attr) | |
5391 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
5392 | " [in module %s]"), | |
4262abfb | 5393 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
5394 | signature = DW_UNSND (attr); |
5395 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
5396 | signature); | |
5397 | } | |
5398 | ||
b0c7bfa9 DE |
5399 | return dwo_unit; |
5400 | } | |
5401 | ||
a2ce51a0 | 5402 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 DE |
5403 | See it for a description of the parameters. |
5404 | Read a TU directly from a DWO file, bypassing the stub. | |
5405 | ||
5406 | Note: This function could be a little bit simpler if we shared cleanups | |
5407 | with our caller, init_cutu_and_read_dies. That's generally a fragile thing | |
5408 | to do, so we keep this function self-contained. Or we could move this | |
5409 | into our caller, but it's complex enough already. */ | |
a2ce51a0 DE |
5410 | |
5411 | static void | |
6aa5f3a6 DE |
5412 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
5413 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
5414 | die_reader_func_ftype *die_reader_func, |
5415 | void *data) | |
5416 | { | |
5417 | struct dwarf2_cu *cu; | |
5418 | struct signatured_type *sig_type; | |
6aa5f3a6 | 5419 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
a2ce51a0 DE |
5420 | struct die_reader_specs reader; |
5421 | const gdb_byte *info_ptr; | |
5422 | struct die_info *comp_unit_die; | |
5423 | int has_children; | |
5424 | ||
5425 | /* Verify we can do the following downcast, and that we have the | |
5426 | data we need. */ | |
5427 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
5428 | sig_type = (struct signatured_type *) this_cu; | |
5429 | gdb_assert (sig_type->dwo_unit != NULL); | |
5430 | ||
5431 | cleanups = make_cleanup (null_cleanup, NULL); | |
5432 | ||
6aa5f3a6 DE |
5433 | if (use_existing_cu && this_cu->cu != NULL) |
5434 | { | |
5435 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
5436 | cu = this_cu->cu; | |
5437 | /* There's no need to do the rereading_dwo_cu handling that | |
5438 | init_cutu_and_read_dies does since we don't read the stub. */ | |
5439 | } | |
5440 | else | |
5441 | { | |
5442 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5443 | gdb_assert (this_cu->cu == NULL); | |
8d749320 | 5444 | cu = XNEW (struct dwarf2_cu); |
6aa5f3a6 DE |
5445 | init_one_comp_unit (cu, this_cu); |
5446 | /* If an error occurs while loading, release our storage. */ | |
5447 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
5448 | } | |
5449 | ||
5450 | /* A future optimization, if needed, would be to use an existing | |
5451 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
5452 | could share abbrev tables. */ | |
a2ce51a0 DE |
5453 | |
5454 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
5455 | 0 /* abbrev_table_provided */, | |
5456 | NULL /* stub_comp_unit_die */, | |
5457 | sig_type->dwo_unit->dwo_file->comp_dir, | |
5458 | &reader, &info_ptr, | |
5459 | &comp_unit_die, &has_children) == 0) | |
5460 | { | |
5461 | /* Dummy die. */ | |
5462 | do_cleanups (cleanups); | |
5463 | return; | |
5464 | } | |
5465 | ||
5466 | /* All the "real" work is done here. */ | |
5467 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5468 | ||
6aa5f3a6 | 5469 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
5470 | but the alternative is making the latter more complex. |
5471 | This function is only for the special case of using DWO files directly: | |
5472 | no point in overly complicating the general case just to handle this. */ | |
6aa5f3a6 | 5473 | if (free_cu_cleanup != NULL) |
a2ce51a0 | 5474 | { |
6aa5f3a6 DE |
5475 | if (keep) |
5476 | { | |
5477 | /* We've successfully allocated this compilation unit. Let our | |
5478 | caller clean it up when finished with it. */ | |
5479 | discard_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5480 | |
6aa5f3a6 DE |
5481 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5482 | So we have to manually free the abbrev table. */ | |
5483 | dwarf2_free_abbrev_table (cu); | |
a2ce51a0 | 5484 | |
6aa5f3a6 DE |
5485 | /* Link this CU into read_in_chain. */ |
5486 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5487 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5488 | } | |
5489 | else | |
5490 | do_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5491 | } |
a2ce51a0 DE |
5492 | |
5493 | do_cleanups (cleanups); | |
5494 | } | |
5495 | ||
fd820528 | 5496 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 5497 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 5498 | |
f4dc4d17 DE |
5499 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
5500 | Otherwise the table specified in the comp unit header is read in and used. | |
5501 | This is an optimization for when we already have the abbrev table. | |
5502 | ||
dee91e82 DE |
5503 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
5504 | Otherwise, a new CU is allocated with xmalloc. | |
5505 | ||
5506 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
5507 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
5508 | ||
5509 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 5510 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 5511 | |
70221824 | 5512 | static void |
fd820528 | 5513 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 5514 | struct abbrev_table *abbrev_table, |
fd820528 DE |
5515 | int use_existing_cu, int keep, |
5516 | die_reader_func_ftype *die_reader_func, | |
5517 | void *data) | |
c906108c | 5518 | { |
dee91e82 | 5519 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 5520 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5521 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5522 | struct dwarf2_cu *cu; |
d521ce57 | 5523 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 5524 | struct die_reader_specs reader; |
d85a05f0 | 5525 | struct die_info *comp_unit_die; |
dee91e82 | 5526 | int has_children; |
d85a05f0 | 5527 | struct attribute *attr; |
365156ad | 5528 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 5529 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 5530 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
5531 | /* Non-zero if CU currently points to a DWO file and we need to |
5532 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 5533 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 5534 | int rereading_dwo_cu = 0; |
c906108c | 5535 | |
b4f54984 | 5536 | if (dwarf_die_debug) |
09406207 DE |
5537 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
5538 | this_cu->is_debug_types ? "type" : "comp", | |
5539 | this_cu->offset.sect_off); | |
5540 | ||
dee91e82 DE |
5541 | if (use_existing_cu) |
5542 | gdb_assert (keep); | |
23745b47 | 5543 | |
a2ce51a0 DE |
5544 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
5545 | file (instead of going through the stub), short-circuit all of this. */ | |
5546 | if (this_cu->reading_dwo_directly) | |
5547 | { | |
5548 | /* Narrow down the scope of possibilities to have to understand. */ | |
5549 | gdb_assert (this_cu->is_debug_types); | |
5550 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
5551 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
5552 | die_reader_func, data); | |
a2ce51a0 DE |
5553 | return; |
5554 | } | |
5555 | ||
dee91e82 DE |
5556 | cleanups = make_cleanup (null_cleanup, NULL); |
5557 | ||
5558 | /* This is cheap if the section is already read in. */ | |
5559 | dwarf2_read_section (objfile, section); | |
5560 | ||
5561 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
5562 | |
5563 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
5564 | |
5565 | if (use_existing_cu && this_cu->cu != NULL) | |
5566 | { | |
5567 | cu = this_cu->cu; | |
42e7ad6c DE |
5568 | /* If this CU is from a DWO file we need to start over, we need to |
5569 | refetch the attributes from the skeleton CU. | |
5570 | This could be optimized by retrieving those attributes from when we | |
5571 | were here the first time: the previous comp_unit_die was stored in | |
5572 | comp_unit_obstack. But there's no data yet that we need this | |
5573 | optimization. */ | |
5574 | if (cu->dwo_unit != NULL) | |
5575 | rereading_dwo_cu = 1; | |
dee91e82 DE |
5576 | } |
5577 | else | |
5578 | { | |
5579 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5580 | gdb_assert (this_cu->cu == NULL); | |
8d749320 | 5581 | cu = XNEW (struct dwarf2_cu); |
dee91e82 | 5582 | init_one_comp_unit (cu, this_cu); |
dee91e82 | 5583 | /* If an error occurs while loading, release our storage. */ |
365156ad | 5584 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 5585 | } |
dee91e82 | 5586 | |
b0c7bfa9 | 5587 | /* Get the header. */ |
42e7ad6c DE |
5588 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
5589 | { | |
5590 | /* We already have the header, there's no need to read it in again. */ | |
5591 | info_ptr += cu->header.first_die_offset.cu_off; | |
5592 | } | |
5593 | else | |
5594 | { | |
3019eac3 | 5595 | if (this_cu->is_debug_types) |
dee91e82 | 5596 | { |
43988095 | 5597 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4bdcc0c1 | 5598 | abbrev_section, info_ptr, |
43988095 | 5599 | rcuh_kind::TYPE); |
dee91e82 | 5600 | |
42e7ad6c DE |
5601 | /* Since per_cu is the first member of struct signatured_type, |
5602 | we can go from a pointer to one to a pointer to the other. */ | |
5603 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 5604 | gdb_assert (sig_type->signature == cu->header.signature); |
42e7ad6c | 5605 | gdb_assert (sig_type->type_offset_in_tu.cu_off |
43988095 | 5606 | == cu->header.type_offset_in_tu.cu_off); |
dee91e82 DE |
5607 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
5608 | ||
42e7ad6c DE |
5609 | /* LENGTH has not been set yet for type units if we're |
5610 | using .gdb_index. */ | |
1ce1cefd | 5611 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
5612 | |
5613 | /* Establish the type offset that can be used to lookup the type. */ | |
5614 | sig_type->type_offset_in_section.sect_off = | |
5615 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
43988095 JK |
5616 | |
5617 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
5618 | } |
5619 | else | |
5620 | { | |
4bdcc0c1 DE |
5621 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
5622 | abbrev_section, | |
43988095 JK |
5623 | info_ptr, |
5624 | rcuh_kind::COMPILE); | |
dee91e82 DE |
5625 | |
5626 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 5627 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 5628 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
5629 | } |
5630 | } | |
10b3939b | 5631 | |
6caca83c | 5632 | /* Skip dummy compilation units. */ |
dee91e82 | 5633 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
5634 | || peek_abbrev_code (abfd, info_ptr) == 0) |
5635 | { | |
dee91e82 | 5636 | do_cleanups (cleanups); |
21b2bd31 | 5637 | return; |
6caca83c CC |
5638 | } |
5639 | ||
433df2d4 DE |
5640 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
5641 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
5642 | done. Note that it's important that if the CU had an abbrev table |
5643 | on entry we don't free it when we're done: Somewhere up the call stack | |
5644 | it may be in use. */ | |
f4dc4d17 DE |
5645 | if (abbrev_table != NULL) |
5646 | { | |
5647 | gdb_assert (cu->abbrev_table == NULL); | |
5648 | gdb_assert (cu->header.abbrev_offset.sect_off | |
5649 | == abbrev_table->offset.sect_off); | |
5650 | cu->abbrev_table = abbrev_table; | |
5651 | } | |
5652 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 5653 | { |
4bdcc0c1 | 5654 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
5655 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5656 | } | |
42e7ad6c DE |
5657 | else if (rereading_dwo_cu) |
5658 | { | |
5659 | dwarf2_free_abbrev_table (cu); | |
5660 | dwarf2_read_abbrevs (cu, abbrev_section); | |
5661 | } | |
af703f96 | 5662 | |
dee91e82 | 5663 | /* Read the top level CU/TU die. */ |
3019eac3 | 5664 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 5665 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 5666 | |
b0c7bfa9 DE |
5667 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
5668 | from the DWO file. | |
5669 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
5670 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
5671 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5672 | if (attr) | |
5673 | { | |
3019eac3 | 5674 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 5675 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
5676 | |
5677 | if (has_children) | |
6a506a2d DE |
5678 | { |
5679 | complaint (&symfile_complaints, | |
5680 | _("compilation unit with DW_AT_GNU_dwo_name" | |
5681 | " has children (offset 0x%x) [in module %s]"), | |
5682 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
5683 | } | |
b0c7bfa9 | 5684 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 5685 | if (dwo_unit != NULL) |
3019eac3 | 5686 | { |
6a506a2d DE |
5687 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
5688 | abbrev_table != NULL, | |
a2ce51a0 | 5689 | comp_unit_die, NULL, |
6a506a2d DE |
5690 | &reader, &info_ptr, |
5691 | &dwo_comp_unit_die, &has_children) == 0) | |
5692 | { | |
5693 | /* Dummy die. */ | |
5694 | do_cleanups (cleanups); | |
5695 | return; | |
5696 | } | |
5697 | comp_unit_die = dwo_comp_unit_die; | |
5698 | } | |
5699 | else | |
5700 | { | |
5701 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
5702 | the stub. A complaint has already been logged. There's | |
5703 | not much more we can do except pass on the stub DIE to | |
5704 | die_reader_func. We don't want to throw an error on bad | |
5705 | debug info. */ | |
3019eac3 DE |
5706 | } |
5707 | } | |
5708 | ||
b0c7bfa9 | 5709 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
5710 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
5711 | ||
b0c7bfa9 | 5712 | /* Done, clean up. */ |
365156ad | 5713 | if (free_cu_cleanup != NULL) |
348e048f | 5714 | { |
365156ad TT |
5715 | if (keep) |
5716 | { | |
5717 | /* We've successfully allocated this compilation unit. Let our | |
5718 | caller clean it up when finished with it. */ | |
5719 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 5720 | |
365156ad TT |
5721 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5722 | So we have to manually free the abbrev table. */ | |
5723 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 5724 | |
365156ad TT |
5725 | /* Link this CU into read_in_chain. */ |
5726 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5727 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5728 | } | |
5729 | else | |
5730 | do_cleanups (free_cu_cleanup); | |
348e048f | 5731 | } |
365156ad TT |
5732 | |
5733 | do_cleanups (cleanups); | |
dee91e82 DE |
5734 | } |
5735 | ||
33e80786 DE |
5736 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
5737 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
5738 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
5739 | |
5740 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 5741 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
5742 | |
5743 | We fill in THIS_CU->length. | |
5744 | ||
5745 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
5746 | linker) then DIE_READER_FUNC will not get called. | |
5747 | ||
5748 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5749 | This is done in order to not leave THIS_CU->cu in a state where we have |
5750 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
5751 | |
5752 | static void | |
5753 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 5754 | struct dwo_file *dwo_file, |
dee91e82 DE |
5755 | die_reader_func_ftype *die_reader_func, |
5756 | void *data) | |
5757 | { | |
5758 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 5759 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5760 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 5761 | struct dwarf2_section_info *abbrev_section; |
dee91e82 | 5762 | struct dwarf2_cu cu; |
d521ce57 | 5763 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
5764 | struct die_reader_specs reader; |
5765 | struct cleanup *cleanups; | |
5766 | struct die_info *comp_unit_die; | |
5767 | int has_children; | |
5768 | ||
b4f54984 | 5769 | if (dwarf_die_debug) |
09406207 DE |
5770 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
5771 | this_cu->is_debug_types ? "type" : "comp", | |
5772 | this_cu->offset.sect_off); | |
5773 | ||
dee91e82 DE |
5774 | gdb_assert (this_cu->cu == NULL); |
5775 | ||
33e80786 DE |
5776 | abbrev_section = (dwo_file != NULL |
5777 | ? &dwo_file->sections.abbrev | |
5778 | : get_abbrev_section_for_cu (this_cu)); | |
5779 | ||
dee91e82 DE |
5780 | /* This is cheap if the section is already read in. */ |
5781 | dwarf2_read_section (objfile, section); | |
5782 | ||
5783 | init_one_comp_unit (&cu, this_cu); | |
5784 | ||
5785 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
5786 | ||
5787 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
5788 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
5789 | abbrev_section, info_ptr, | |
43988095 JK |
5790 | (this_cu->is_debug_types |
5791 | ? rcuh_kind::TYPE | |
5792 | : rcuh_kind::COMPILE)); | |
dee91e82 | 5793 | |
1ce1cefd | 5794 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
5795 | |
5796 | /* Skip dummy compilation units. */ | |
5797 | if (info_ptr >= begin_info_ptr + this_cu->length | |
5798 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 5799 | { |
dee91e82 | 5800 | do_cleanups (cleanups); |
21b2bd31 | 5801 | return; |
93311388 | 5802 | } |
72bf9492 | 5803 | |
dee91e82 DE |
5804 | dwarf2_read_abbrevs (&cu, abbrev_section); |
5805 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
5806 | ||
3019eac3 | 5807 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
5808 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
5809 | ||
5810 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5811 | ||
5812 | do_cleanups (cleanups); | |
5813 | } | |
5814 | ||
3019eac3 DE |
5815 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
5816 | does not lookup the specified DWO file. | |
5817 | This cannot be used to read DWO files. | |
dee91e82 DE |
5818 | |
5819 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5820 | This is done in order to not leave THIS_CU->cu in a state where we have |
5821 | to care whether it refers to the "main" CU or the DWO CU. | |
5822 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
5823 | |
5824 | static void | |
5825 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
5826 | die_reader_func_ftype *die_reader_func, | |
5827 | void *data) | |
5828 | { | |
33e80786 | 5829 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 5830 | } |
0018ea6f DE |
5831 | \f |
5832 | /* Type Unit Groups. | |
dee91e82 | 5833 | |
0018ea6f DE |
5834 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
5835 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
5836 | so that all types coming from the same compilation (.o file) are grouped | |
5837 | together. A future step could be to put the types in the same symtab as | |
5838 | the CU the types ultimately came from. */ | |
ff013f42 | 5839 | |
f4dc4d17 DE |
5840 | static hashval_t |
5841 | hash_type_unit_group (const void *item) | |
5842 | { | |
9a3c8263 SM |
5843 | const struct type_unit_group *tu_group |
5844 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 5845 | |
094b34ac | 5846 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5847 | } |
348e048f DE |
5848 | |
5849 | static int | |
f4dc4d17 | 5850 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5851 | { |
9a3c8263 SM |
5852 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
5853 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 5854 | |
094b34ac | 5855 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5856 | } |
348e048f | 5857 | |
f4dc4d17 DE |
5858 | /* Allocate a hash table for type unit groups. */ |
5859 | ||
5860 | static htab_t | |
5861 | allocate_type_unit_groups_table (void) | |
5862 | { | |
5863 | return htab_create_alloc_ex (3, | |
5864 | hash_type_unit_group, | |
5865 | eq_type_unit_group, | |
5866 | NULL, | |
5867 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5868 | hashtab_obstack_allocate, | |
5869 | dummy_obstack_deallocate); | |
5870 | } | |
dee91e82 | 5871 | |
f4dc4d17 DE |
5872 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5873 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5874 | of any one psymtab grow too big. */ | |
5875 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5876 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5877 | |
094b34ac | 5878 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5879 | Create the type_unit_group object used to hold one or more TUs. */ |
5880 | ||
5881 | static struct type_unit_group * | |
094b34ac | 5882 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5883 | { |
5884 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5885 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5886 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5887 | |
5888 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5889 | struct type_unit_group); | |
094b34ac | 5890 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 5891 | per_cu->objfile = objfile; |
f4dc4d17 | 5892 | |
094b34ac DE |
5893 | if (dwarf2_per_objfile->using_index) |
5894 | { | |
5895 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5896 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
5897 | } |
5898 | else | |
5899 | { | |
5900 | unsigned int line_offset = line_offset_struct.sect_off; | |
5901 | struct partial_symtab *pst; | |
5902 | char *name; | |
5903 | ||
5904 | /* Give the symtab a useful name for debug purposes. */ | |
5905 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5906 | name = xstrprintf ("<type_units_%d>", | |
5907 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5908 | else | |
5909 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5910 | ||
5911 | pst = create_partial_symtab (per_cu, name); | |
5912 | pst->anonymous = 1; | |
f4dc4d17 | 5913 | |
094b34ac DE |
5914 | xfree (name); |
5915 | } | |
f4dc4d17 | 5916 | |
094b34ac DE |
5917 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5918 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5919 | |
5920 | return tu_group; | |
5921 | } | |
5922 | ||
094b34ac DE |
5923 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5924 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5925 | |
5926 | static struct type_unit_group * | |
ff39bb5e | 5927 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
5928 | { |
5929 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5930 | struct type_unit_group *tu_group; | |
5931 | void **slot; | |
5932 | unsigned int line_offset; | |
5933 | struct type_unit_group type_unit_group_for_lookup; | |
5934 | ||
5935 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5936 | { | |
5937 | dwarf2_per_objfile->type_unit_groups = | |
5938 | allocate_type_unit_groups_table (); | |
5939 | } | |
5940 | ||
5941 | /* Do we need to create a new group, or can we use an existing one? */ | |
5942 | ||
5943 | if (stmt_list) | |
5944 | { | |
5945 | line_offset = DW_UNSND (stmt_list); | |
5946 | ++tu_stats->nr_symtab_sharers; | |
5947 | } | |
5948 | else | |
5949 | { | |
5950 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5951 | We can do various things here like create one group per TU or | |
5952 | spread them over multiple groups to split up the expansion work. | |
5953 | To avoid worst case scenarios (too many groups or too large groups) | |
5954 | we, umm, group them in bunches. */ | |
5955 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5956 | | (tu_stats->nr_stmt_less_type_units | |
5957 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5958 | ++tu_stats->nr_stmt_less_type_units; | |
5959 | } | |
5960 | ||
094b34ac DE |
5961 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5962 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5963 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5964 | &type_unit_group_for_lookup, INSERT); | |
5965 | if (*slot != NULL) | |
5966 | { | |
9a3c8263 | 5967 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
5968 | gdb_assert (tu_group != NULL); |
5969 | } | |
5970 | else | |
5971 | { | |
5972 | sect_offset line_offset_struct; | |
5973 | ||
5974 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5975 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5976 | *slot = tu_group; |
5977 | ++tu_stats->nr_symtabs; | |
5978 | } | |
5979 | ||
5980 | return tu_group; | |
5981 | } | |
0018ea6f DE |
5982 | \f |
5983 | /* Partial symbol tables. */ | |
5984 | ||
5985 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5986 | ||
5987 | The caller must fill in the following details: | |
5988 | dirname, textlow, texthigh. */ | |
5989 | ||
5990 | static struct partial_symtab * | |
5991 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5992 | { | |
5993 | struct objfile *objfile = per_cu->objfile; | |
5994 | struct partial_symtab *pst; | |
5995 | ||
18a94d75 | 5996 | pst = start_psymtab_common (objfile, name, 0, |
0018ea6f DE |
5997 | objfile->global_psymbols.next, |
5998 | objfile->static_psymbols.next); | |
5999 | ||
6000 | pst->psymtabs_addrmap_supported = 1; | |
6001 | ||
6002 | /* This is the glue that links PST into GDB's symbol API. */ | |
6003 | pst->read_symtab_private = per_cu; | |
6004 | pst->read_symtab = dwarf2_read_symtab; | |
6005 | per_cu->v.psymtab = pst; | |
6006 | ||
6007 | return pst; | |
6008 | } | |
6009 | ||
b93601f3 TT |
6010 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
6011 | type. */ | |
6012 | ||
6013 | struct process_psymtab_comp_unit_data | |
6014 | { | |
6015 | /* True if we are reading a DW_TAG_partial_unit. */ | |
6016 | ||
6017 | int want_partial_unit; | |
6018 | ||
6019 | /* The "pretend" language that is used if the CU doesn't declare a | |
6020 | language. */ | |
6021 | ||
6022 | enum language pretend_language; | |
6023 | }; | |
6024 | ||
0018ea6f DE |
6025 | /* die_reader_func for process_psymtab_comp_unit. */ |
6026 | ||
6027 | static void | |
6028 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6029 | const gdb_byte *info_ptr, |
0018ea6f DE |
6030 | struct die_info *comp_unit_die, |
6031 | int has_children, | |
6032 | void *data) | |
6033 | { | |
6034 | struct dwarf2_cu *cu = reader->cu; | |
6035 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 6036 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 6037 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
6038 | CORE_ADDR baseaddr; |
6039 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
6040 | struct partial_symtab *pst; | |
3a2b436a | 6041 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 6042 | const char *filename; |
9a3c8263 SM |
6043 | struct process_psymtab_comp_unit_data *info |
6044 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 6045 | |
b93601f3 | 6046 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
6047 | return; |
6048 | ||
6049 | gdb_assert (! per_cu->is_debug_types); | |
6050 | ||
b93601f3 | 6051 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
6052 | |
6053 | cu->list_in_scope = &file_symbols; | |
6054 | ||
6055 | /* Allocate a new partial symbol table structure. */ | |
7d45c7c3 KB |
6056 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
6057 | if (filename == NULL) | |
0018ea6f | 6058 | filename = ""; |
0018ea6f DE |
6059 | |
6060 | pst = create_partial_symtab (per_cu, filename); | |
6061 | ||
6062 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 6063 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
6064 | |
6065 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6066 | ||
6067 | dwarf2_find_base_address (comp_unit_die, cu); | |
6068 | ||
6069 | /* Possibly set the default values of LOWPC and HIGHPC from | |
6070 | `DW_AT_ranges'. */ | |
3a2b436a JK |
6071 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
6072 | &best_highpc, cu, pst); | |
6073 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
0018ea6f DE |
6074 | /* Store the contiguous range if it is not empty; it can be empty for |
6075 | CUs with no code. */ | |
6076 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
6077 | gdbarch_adjust_dwarf2_addr (gdbarch, |
6078 | best_lowpc + baseaddr), | |
6079 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
6080 | best_highpc + baseaddr) - 1, | |
6081 | pst); | |
0018ea6f DE |
6082 | |
6083 | /* Check if comp unit has_children. | |
6084 | If so, read the rest of the partial symbols from this comp unit. | |
6085 | If not, there's no more debug_info for this comp unit. */ | |
6086 | if (has_children) | |
6087 | { | |
6088 | struct partial_die_info *first_die; | |
6089 | CORE_ADDR lowpc, highpc; | |
6090 | ||
6091 | lowpc = ((CORE_ADDR) -1); | |
6092 | highpc = ((CORE_ADDR) 0); | |
6093 | ||
6094 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6095 | ||
6096 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 6097 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
6098 | |
6099 | /* If we didn't find a lowpc, set it to highpc to avoid | |
6100 | complaints from `maint check'. */ | |
6101 | if (lowpc == ((CORE_ADDR) -1)) | |
6102 | lowpc = highpc; | |
6103 | ||
6104 | /* If the compilation unit didn't have an explicit address range, | |
6105 | then use the information extracted from its child dies. */ | |
e385593e | 6106 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
6107 | { |
6108 | best_lowpc = lowpc; | |
6109 | best_highpc = highpc; | |
6110 | } | |
6111 | } | |
3e29f34a MR |
6112 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
6113 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f | 6114 | |
8763cede | 6115 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
6116 | |
6117 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
6118 | { | |
6119 | int i; | |
6120 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6121 | struct dwarf2_per_cu_data *iter; | |
6122 | ||
6123 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
6124 | post-pass. */ | |
6125 | pst->number_of_dependencies = len; | |
8d749320 SM |
6126 | pst->dependencies = |
6127 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
0018ea6f DE |
6128 | for (i = 0; |
6129 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6130 | i, iter); | |
6131 | ++i) | |
6132 | pst->dependencies[i] = iter->v.psymtab; | |
6133 | ||
6134 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6135 | } | |
6136 | ||
6137 | /* Get the list of files included in the current compilation unit, | |
6138 | and build a psymtab for each of them. */ | |
6139 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
6140 | ||
b4f54984 | 6141 | if (dwarf_read_debug) |
0018ea6f DE |
6142 | { |
6143 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6144 | ||
6145 | fprintf_unfiltered (gdb_stdlog, | |
6146 | "Psymtab for %s unit @0x%x: %s - %s" | |
6147 | ", %d global, %d static syms\n", | |
6148 | per_cu->is_debug_types ? "type" : "comp", | |
6149 | per_cu->offset.sect_off, | |
6150 | paddress (gdbarch, pst->textlow), | |
6151 | paddress (gdbarch, pst->texthigh), | |
6152 | pst->n_global_syms, pst->n_static_syms); | |
6153 | } | |
6154 | } | |
6155 | ||
6156 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6157 | Process compilation unit THIS_CU for a psymtab. */ | |
6158 | ||
6159 | static void | |
6160 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
6161 | int want_partial_unit, |
6162 | enum language pretend_language) | |
0018ea6f | 6163 | { |
b93601f3 TT |
6164 | struct process_psymtab_comp_unit_data info; |
6165 | ||
0018ea6f DE |
6166 | /* If this compilation unit was already read in, free the |
6167 | cached copy in order to read it in again. This is | |
6168 | necessary because we skipped some symbols when we first | |
6169 | read in the compilation unit (see load_partial_dies). | |
6170 | This problem could be avoided, but the benefit is unclear. */ | |
6171 | if (this_cu->cu != NULL) | |
6172 | free_one_cached_comp_unit (this_cu); | |
6173 | ||
6174 | gdb_assert (! this_cu->is_debug_types); | |
b93601f3 TT |
6175 | info.want_partial_unit = want_partial_unit; |
6176 | info.pretend_language = pretend_language; | |
0018ea6f DE |
6177 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
6178 | process_psymtab_comp_unit_reader, | |
b93601f3 | 6179 | &info); |
0018ea6f DE |
6180 | |
6181 | /* Age out any secondary CUs. */ | |
6182 | age_cached_comp_units (); | |
6183 | } | |
f4dc4d17 DE |
6184 | |
6185 | /* Reader function for build_type_psymtabs. */ | |
6186 | ||
6187 | static void | |
6188 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6189 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
6190 | struct die_info *type_unit_die, |
6191 | int has_children, | |
6192 | void *data) | |
6193 | { | |
6194 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6195 | struct dwarf2_cu *cu = reader->cu; | |
6196 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 6197 | struct signatured_type *sig_type; |
f4dc4d17 DE |
6198 | struct type_unit_group *tu_group; |
6199 | struct attribute *attr; | |
6200 | struct partial_die_info *first_die; | |
6201 | CORE_ADDR lowpc, highpc; | |
6202 | struct partial_symtab *pst; | |
6203 | ||
6204 | gdb_assert (data == NULL); | |
0186c6a7 DE |
6205 | gdb_assert (per_cu->is_debug_types); |
6206 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
6207 | |
6208 | if (! has_children) | |
6209 | return; | |
6210 | ||
6211 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 6212 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 6213 | |
0186c6a7 | 6214 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
6215 | |
6216 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
6217 | cu->list_in_scope = &file_symbols; | |
6218 | pst = create_partial_symtab (per_cu, ""); | |
6219 | pst->anonymous = 1; | |
6220 | ||
6221 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6222 | ||
6223 | lowpc = (CORE_ADDR) -1; | |
6224 | highpc = (CORE_ADDR) 0; | |
6225 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
6226 | ||
8763cede | 6227 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
6228 | } |
6229 | ||
73051182 DE |
6230 | /* Struct used to sort TUs by their abbreviation table offset. */ |
6231 | ||
6232 | struct tu_abbrev_offset | |
6233 | { | |
6234 | struct signatured_type *sig_type; | |
6235 | sect_offset abbrev_offset; | |
6236 | }; | |
6237 | ||
6238 | /* Helper routine for build_type_psymtabs_1, passed to qsort. */ | |
6239 | ||
6240 | static int | |
6241 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
6242 | { | |
9a3c8263 SM |
6243 | const struct tu_abbrev_offset * const *a |
6244 | = (const struct tu_abbrev_offset * const*) ap; | |
6245 | const struct tu_abbrev_offset * const *b | |
6246 | = (const struct tu_abbrev_offset * const*) bp; | |
73051182 DE |
6247 | unsigned int aoff = (*a)->abbrev_offset.sect_off; |
6248 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
6249 | ||
6250 | return (aoff > boff) - (aoff < boff); | |
6251 | } | |
6252 | ||
6253 | /* Efficiently read all the type units. | |
6254 | This does the bulk of the work for build_type_psymtabs. | |
6255 | ||
6256 | The efficiency is because we sort TUs by the abbrev table they use and | |
6257 | only read each abbrev table once. In one program there are 200K TUs | |
6258 | sharing 8K abbrev tables. | |
6259 | ||
6260 | The main purpose of this function is to support building the | |
6261 | dwarf2_per_objfile->type_unit_groups table. | |
6262 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
6263 | can collapse the search space by grouping them by stmt_list. | |
6264 | The savings can be significant, in the same program from above the 200K TUs | |
6265 | share 8K stmt_list tables. | |
6266 | ||
6267 | FUNC is expected to call get_type_unit_group, which will create the | |
6268 | struct type_unit_group if necessary and add it to | |
6269 | dwarf2_per_objfile->type_unit_groups. */ | |
6270 | ||
6271 | static void | |
6272 | build_type_psymtabs_1 (void) | |
6273 | { | |
73051182 DE |
6274 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
6275 | struct cleanup *cleanups; | |
6276 | struct abbrev_table *abbrev_table; | |
6277 | sect_offset abbrev_offset; | |
6278 | struct tu_abbrev_offset *sorted_by_abbrev; | |
73051182 DE |
6279 | int i; |
6280 | ||
6281 | /* It's up to the caller to not call us multiple times. */ | |
6282 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
6283 | ||
6284 | if (dwarf2_per_objfile->n_type_units == 0) | |
6285 | return; | |
6286 | ||
6287 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
6288 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
6289 | read each abbrev table in. | |
6290 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
6291 | This is simpler and efficient enough for now. | |
6292 | ||
6293 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
6294 | symtab to use). Typically TUs with the same abbrev offset have the same | |
6295 | stmt_list value too so in practice this should work well. | |
6296 | ||
6297 | The basic algorithm here is: | |
6298 | ||
6299 | sort TUs by abbrev table | |
6300 | for each TU with same abbrev table: | |
6301 | read abbrev table if first user | |
6302 | read TU top level DIE | |
6303 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
6304 | call FUNC */ | |
6305 | ||
b4f54984 | 6306 | if (dwarf_read_debug) |
73051182 DE |
6307 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
6308 | ||
6309 | /* Sort in a separate table to maintain the order of all_type_units | |
6310 | for .gdb_index: TU indices directly index all_type_units. */ | |
6311 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
6312 | dwarf2_per_objfile->n_type_units); | |
6313 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6314 | { | |
6315 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
6316 | ||
6317 | sorted_by_abbrev[i].sig_type = sig_type; | |
6318 | sorted_by_abbrev[i].abbrev_offset = | |
6319 | read_abbrev_offset (sig_type->per_cu.section, | |
6320 | sig_type->per_cu.offset); | |
6321 | } | |
6322 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
6323 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
6324 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
6325 | ||
6326 | abbrev_offset.sect_off = ~(unsigned) 0; | |
6327 | abbrev_table = NULL; | |
6328 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
6329 | ||
6330 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6331 | { | |
6332 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
6333 | ||
6334 | /* Switch to the next abbrev table if necessary. */ | |
6335 | if (abbrev_table == NULL | |
6336 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
6337 | { | |
6338 | if (abbrev_table != NULL) | |
6339 | { | |
6340 | abbrev_table_free (abbrev_table); | |
6341 | /* Reset to NULL in case abbrev_table_read_table throws | |
6342 | an error: abbrev_table_free_cleanup will get called. */ | |
6343 | abbrev_table = NULL; | |
6344 | } | |
6345 | abbrev_offset = tu->abbrev_offset; | |
6346 | abbrev_table = | |
6347 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
6348 | abbrev_offset); | |
6349 | ++tu_stats->nr_uniq_abbrev_tables; | |
6350 | } | |
6351 | ||
6352 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
6353 | build_type_psymtabs_reader, NULL); | |
6354 | } | |
6355 | ||
73051182 | 6356 | do_cleanups (cleanups); |
6aa5f3a6 | 6357 | } |
73051182 | 6358 | |
6aa5f3a6 DE |
6359 | /* Print collected type unit statistics. */ |
6360 | ||
6361 | static void | |
6362 | print_tu_stats (void) | |
6363 | { | |
6364 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6365 | ||
6366 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
6367 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
6368 | dwarf2_per_objfile->n_type_units); | |
6369 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
6370 | tu_stats->nr_uniq_abbrev_tables); | |
6371 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
6372 | tu_stats->nr_symtabs); | |
6373 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
6374 | tu_stats->nr_symtab_sharers); | |
6375 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
6376 | tu_stats->nr_stmt_less_type_units); | |
6377 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
6378 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
6379 | } |
6380 | ||
f4dc4d17 DE |
6381 | /* Traversal function for build_type_psymtabs. */ |
6382 | ||
6383 | static int | |
6384 | build_type_psymtab_dependencies (void **slot, void *info) | |
6385 | { | |
6386 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6387 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 6388 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 6389 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
6390 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
6391 | struct signatured_type *iter; | |
f4dc4d17 DE |
6392 | int i; |
6393 | ||
6394 | gdb_assert (len > 0); | |
0186c6a7 | 6395 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
6396 | |
6397 | pst->number_of_dependencies = len; | |
8d749320 SM |
6398 | pst->dependencies = |
6399 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
f4dc4d17 | 6400 | for (i = 0; |
0186c6a7 | 6401 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
6402 | ++i) |
6403 | { | |
0186c6a7 DE |
6404 | gdb_assert (iter->per_cu.is_debug_types); |
6405 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 6406 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
6407 | } |
6408 | ||
0186c6a7 | 6409 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
6410 | |
6411 | return 1; | |
6412 | } | |
6413 | ||
6414 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6415 | Build partial symbol tables for the .debug_types comp-units. */ | |
6416 | ||
6417 | static void | |
6418 | build_type_psymtabs (struct objfile *objfile) | |
6419 | { | |
0e50663e | 6420 | if (! create_all_type_units (objfile)) |
348e048f DE |
6421 | return; |
6422 | ||
73051182 | 6423 | build_type_psymtabs_1 (); |
6aa5f3a6 | 6424 | } |
f4dc4d17 | 6425 | |
6aa5f3a6 DE |
6426 | /* Traversal function for process_skeletonless_type_unit. |
6427 | Read a TU in a DWO file and build partial symbols for it. */ | |
6428 | ||
6429 | static int | |
6430 | process_skeletonless_type_unit (void **slot, void *info) | |
6431 | { | |
6432 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
9a3c8263 | 6433 | struct objfile *objfile = (struct objfile *) info; |
6aa5f3a6 DE |
6434 | struct signatured_type find_entry, *entry; |
6435 | ||
6436 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
6437 | ||
6438 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6439 | { | |
6440 | dwarf2_per_objfile->signatured_types | |
6441 | = allocate_signatured_type_table (objfile); | |
6442 | } | |
6443 | ||
6444 | find_entry.signature = dwo_unit->signature; | |
6445 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
6446 | INSERT); | |
6447 | /* If we've already seen this type there's nothing to do. What's happening | |
6448 | is we're doing our own version of comdat-folding here. */ | |
6449 | if (*slot != NULL) | |
6450 | return 1; | |
6451 | ||
6452 | /* This does the job that create_all_type_units would have done for | |
6453 | this TU. */ | |
6454 | entry = add_type_unit (dwo_unit->signature, slot); | |
6455 | fill_in_sig_entry_from_dwo_entry (objfile, entry, dwo_unit); | |
6456 | *slot = entry; | |
6457 | ||
6458 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6459 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
6460 | build_type_psymtabs_reader, NULL); | |
6461 | ||
6462 | return 1; | |
6463 | } | |
6464 | ||
6465 | /* Traversal function for process_skeletonless_type_units. */ | |
6466 | ||
6467 | static int | |
6468 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
6469 | { | |
6470 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
6471 | ||
6472 | if (dwo_file->tus != NULL) | |
6473 | { | |
6474 | htab_traverse_noresize (dwo_file->tus, | |
6475 | process_skeletonless_type_unit, info); | |
6476 | } | |
6477 | ||
6478 | return 1; | |
6479 | } | |
6480 | ||
6481 | /* Scan all TUs of DWO files, verifying we've processed them. | |
6482 | This is needed in case a TU was emitted without its skeleton. | |
6483 | Note: This can't be done until we know what all the DWO files are. */ | |
6484 | ||
6485 | static void | |
6486 | process_skeletonless_type_units (struct objfile *objfile) | |
6487 | { | |
6488 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
6489 | if (get_dwp_file () == NULL | |
6490 | && dwarf2_per_objfile->dwo_files != NULL) | |
6491 | { | |
6492 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
6493 | process_dwo_file_for_skeletonless_type_units, | |
6494 | objfile); | |
6495 | } | |
348e048f DE |
6496 | } |
6497 | ||
60606b2c TT |
6498 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
6499 | ||
6500 | static void | |
6501 | psymtabs_addrmap_cleanup (void *o) | |
6502 | { | |
9a3c8263 | 6503 | struct objfile *objfile = (struct objfile *) o; |
ec61707d | 6504 | |
60606b2c TT |
6505 | objfile->psymtabs_addrmap = NULL; |
6506 | } | |
6507 | ||
95554aad TT |
6508 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
6509 | ||
6510 | static void | |
6511 | set_partial_user (struct objfile *objfile) | |
6512 | { | |
6513 | int i; | |
6514 | ||
6515 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
6516 | { | |
8832e7e3 | 6517 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
95554aad TT |
6518 | struct partial_symtab *pst = per_cu->v.psymtab; |
6519 | int j; | |
6520 | ||
36586728 TT |
6521 | if (pst == NULL) |
6522 | continue; | |
6523 | ||
95554aad TT |
6524 | for (j = 0; j < pst->number_of_dependencies; ++j) |
6525 | { | |
6526 | /* Set the 'user' field only if it is not already set. */ | |
6527 | if (pst->dependencies[j]->user == NULL) | |
6528 | pst->dependencies[j]->user = pst; | |
6529 | } | |
6530 | } | |
6531 | } | |
6532 | ||
93311388 DE |
6533 | /* Build the partial symbol table by doing a quick pass through the |
6534 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 6535 | |
93311388 | 6536 | static void |
c67a9c90 | 6537 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 6538 | { |
60606b2c TT |
6539 | struct cleanup *back_to, *addrmap_cleanup; |
6540 | struct obstack temp_obstack; | |
21b2bd31 | 6541 | int i; |
93311388 | 6542 | |
b4f54984 | 6543 | if (dwarf_read_debug) |
45cfd468 DE |
6544 | { |
6545 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 6546 | objfile_name (objfile)); |
45cfd468 DE |
6547 | } |
6548 | ||
98bfdba5 PA |
6549 | dwarf2_per_objfile->reading_partial_symbols = 1; |
6550 | ||
be391dca | 6551 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 6552 | |
93311388 DE |
6553 | /* Any cached compilation units will be linked by the per-objfile |
6554 | read_in_chain. Make sure to free them when we're done. */ | |
6555 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 6556 | |
348e048f DE |
6557 | build_type_psymtabs (objfile); |
6558 | ||
93311388 | 6559 | create_all_comp_units (objfile); |
c906108c | 6560 | |
60606b2c TT |
6561 | /* Create a temporary address map on a temporary obstack. We later |
6562 | copy this to the final obstack. */ | |
6563 | obstack_init (&temp_obstack); | |
6564 | make_cleanup_obstack_free (&temp_obstack); | |
6565 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
6566 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 6567 | |
21b2bd31 | 6568 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 6569 | { |
8832e7e3 | 6570 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
aaa75496 | 6571 | |
b93601f3 | 6572 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 6573 | } |
ff013f42 | 6574 | |
6aa5f3a6 DE |
6575 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
6576 | process_skeletonless_type_units (objfile); | |
6577 | ||
6578 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
6579 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
6580 | { | |
6581 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
6582 | build_type_psymtab_dependencies, NULL); | |
6583 | } | |
6584 | ||
b4f54984 | 6585 | if (dwarf_read_debug) |
6aa5f3a6 DE |
6586 | print_tu_stats (); |
6587 | ||
95554aad TT |
6588 | set_partial_user (objfile); |
6589 | ||
ff013f42 JK |
6590 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
6591 | &objfile->objfile_obstack); | |
60606b2c | 6592 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 6593 | |
ae038cb0 | 6594 | do_cleanups (back_to); |
45cfd468 | 6595 | |
b4f54984 | 6596 | if (dwarf_read_debug) |
45cfd468 | 6597 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 6598 | objfile_name (objfile)); |
ae038cb0 DJ |
6599 | } |
6600 | ||
3019eac3 | 6601 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
6602 | |
6603 | static void | |
dee91e82 | 6604 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 6605 | const gdb_byte *info_ptr, |
dee91e82 DE |
6606 | struct die_info *comp_unit_die, |
6607 | int has_children, | |
6608 | void *data) | |
ae038cb0 | 6609 | { |
dee91e82 | 6610 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 6611 | |
95554aad | 6612 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 6613 | |
ae038cb0 DJ |
6614 | /* Check if comp unit has_children. |
6615 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 6616 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 6617 | if (has_children) |
dee91e82 DE |
6618 | load_partial_dies (reader, info_ptr, 0); |
6619 | } | |
98bfdba5 | 6620 | |
dee91e82 DE |
6621 | /* Load the partial DIEs for a secondary CU into memory. |
6622 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 6623 | |
dee91e82 DE |
6624 | static void |
6625 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
6626 | { | |
f4dc4d17 DE |
6627 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6628 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
6629 | } |
6630 | ||
ae038cb0 | 6631 | static void |
36586728 TT |
6632 | read_comp_units_from_section (struct objfile *objfile, |
6633 | struct dwarf2_section_info *section, | |
6634 | unsigned int is_dwz, | |
6635 | int *n_allocated, | |
6636 | int *n_comp_units, | |
6637 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 6638 | { |
d521ce57 | 6639 | const gdb_byte *info_ptr; |
a32a8923 | 6640 | bfd *abfd = get_section_bfd_owner (section); |
be391dca | 6641 | |
b4f54984 | 6642 | if (dwarf_read_debug) |
bf6af496 | 6643 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
6644 | get_section_name (section), |
6645 | get_section_file_name (section)); | |
bf6af496 | 6646 | |
36586728 | 6647 | dwarf2_read_section (objfile, section); |
ae038cb0 | 6648 | |
36586728 | 6649 | info_ptr = section->buffer; |
6e70227d | 6650 | |
36586728 | 6651 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 6652 | { |
c764a876 | 6653 | unsigned int length, initial_length_size; |
ae038cb0 | 6654 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 6655 | sect_offset offset; |
ae038cb0 | 6656 | |
36586728 | 6657 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
6658 | |
6659 | /* Read just enough information to find out where the next | |
6660 | compilation unit is. */ | |
36586728 | 6661 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
6662 | |
6663 | /* Save the compilation unit for later lookup. */ | |
8d749320 | 6664 | this_cu = XOBNEW (&objfile->objfile_obstack, struct dwarf2_per_cu_data); |
ae038cb0 DJ |
6665 | memset (this_cu, 0, sizeof (*this_cu)); |
6666 | this_cu->offset = offset; | |
c764a876 | 6667 | this_cu->length = length + initial_length_size; |
36586728 | 6668 | this_cu->is_dwz = is_dwz; |
9291a0cd | 6669 | this_cu->objfile = objfile; |
8a0459fd | 6670 | this_cu->section = section; |
ae038cb0 | 6671 | |
36586728 | 6672 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 6673 | { |
36586728 | 6674 | *n_allocated *= 2; |
224c3ddb SM |
6675 | *all_comp_units = XRESIZEVEC (struct dwarf2_per_cu_data *, |
6676 | *all_comp_units, *n_allocated); | |
ae038cb0 | 6677 | } |
36586728 TT |
6678 | (*all_comp_units)[*n_comp_units] = this_cu; |
6679 | ++*n_comp_units; | |
ae038cb0 DJ |
6680 | |
6681 | info_ptr = info_ptr + this_cu->length; | |
6682 | } | |
36586728 TT |
6683 | } |
6684 | ||
6685 | /* Create a list of all compilation units in OBJFILE. | |
6686 | This is only done for -readnow and building partial symtabs. */ | |
6687 | ||
6688 | static void | |
6689 | create_all_comp_units (struct objfile *objfile) | |
6690 | { | |
6691 | int n_allocated; | |
6692 | int n_comp_units; | |
6693 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 6694 | struct dwz_file *dwz; |
36586728 TT |
6695 | |
6696 | n_comp_units = 0; | |
6697 | n_allocated = 10; | |
8d749320 | 6698 | all_comp_units = XNEWVEC (struct dwarf2_per_cu_data *, n_allocated); |
36586728 TT |
6699 | |
6700 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
6701 | &n_allocated, &n_comp_units, &all_comp_units); | |
6702 | ||
4db1a1dc TT |
6703 | dwz = dwarf2_get_dwz_file (); |
6704 | if (dwz != NULL) | |
6705 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
6706 | &n_allocated, &n_comp_units, | |
6707 | &all_comp_units); | |
ae038cb0 | 6708 | |
8d749320 SM |
6709 | dwarf2_per_objfile->all_comp_units = XOBNEWVEC (&objfile->objfile_obstack, |
6710 | struct dwarf2_per_cu_data *, | |
6711 | n_comp_units); | |
ae038cb0 DJ |
6712 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, |
6713 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6714 | xfree (all_comp_units); | |
6715 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
6716 | } |
6717 | ||
5734ee8b | 6718 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 6719 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 6720 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
6721 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
6722 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 6723 | |
72bf9492 DJ |
6724 | static void |
6725 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
6726 | CORE_ADDR *highpc, int set_addrmap, |
6727 | struct dwarf2_cu *cu) | |
c906108c | 6728 | { |
72bf9492 | 6729 | struct partial_die_info *pdi; |
c906108c | 6730 | |
91c24f0a DC |
6731 | /* Now, march along the PDI's, descending into ones which have |
6732 | interesting children but skipping the children of the other ones, | |
6733 | until we reach the end of the compilation unit. */ | |
c906108c | 6734 | |
72bf9492 | 6735 | pdi = first_die; |
91c24f0a | 6736 | |
72bf9492 DJ |
6737 | while (pdi != NULL) |
6738 | { | |
6739 | fixup_partial_die (pdi, cu); | |
c906108c | 6740 | |
f55ee35c | 6741 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
6742 | children, so we need to look at them. Ditto for anonymous |
6743 | enums. */ | |
933c6fe4 | 6744 | |
72bf9492 | 6745 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
6746 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
6747 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 6748 | { |
72bf9492 | 6749 | switch (pdi->tag) |
c906108c SS |
6750 | { |
6751 | case DW_TAG_subprogram: | |
cdc07690 | 6752 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 6753 | break; |
72929c62 | 6754 | case DW_TAG_constant: |
c906108c SS |
6755 | case DW_TAG_variable: |
6756 | case DW_TAG_typedef: | |
91c24f0a | 6757 | case DW_TAG_union_type: |
72bf9492 | 6758 | if (!pdi->is_declaration) |
63d06c5c | 6759 | { |
72bf9492 | 6760 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
6761 | } |
6762 | break; | |
c906108c | 6763 | case DW_TAG_class_type: |
680b30c7 | 6764 | case DW_TAG_interface_type: |
c906108c | 6765 | case DW_TAG_structure_type: |
72bf9492 | 6766 | if (!pdi->is_declaration) |
c906108c | 6767 | { |
72bf9492 | 6768 | add_partial_symbol (pdi, cu); |
c906108c | 6769 | } |
e98c9e7c TT |
6770 | if (cu->language == language_rust && pdi->has_children) |
6771 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
6772 | set_addrmap, cu); | |
c906108c | 6773 | break; |
91c24f0a | 6774 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
6775 | if (!pdi->is_declaration) |
6776 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
6777 | break; |
6778 | case DW_TAG_base_type: | |
a02abb62 | 6779 | case DW_TAG_subrange_type: |
c906108c | 6780 | /* File scope base type definitions are added to the partial |
c5aa993b | 6781 | symbol table. */ |
72bf9492 | 6782 | add_partial_symbol (pdi, cu); |
c906108c | 6783 | break; |
d9fa45fe | 6784 | case DW_TAG_namespace: |
cdc07690 | 6785 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 6786 | break; |
5d7cb8df | 6787 | case DW_TAG_module: |
cdc07690 | 6788 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 6789 | break; |
95554aad TT |
6790 | case DW_TAG_imported_unit: |
6791 | { | |
6792 | struct dwarf2_per_cu_data *per_cu; | |
6793 | ||
f4dc4d17 DE |
6794 | /* For now we don't handle imported units in type units. */ |
6795 | if (cu->per_cu->is_debug_types) | |
6796 | { | |
6797 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6798 | " supported in type units [in module %s]"), | |
4262abfb | 6799 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
6800 | } |
6801 | ||
95554aad | 6802 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 6803 | pdi->is_dwz, |
95554aad TT |
6804 | cu->objfile); |
6805 | ||
6806 | /* Go read the partial unit, if needed. */ | |
6807 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 6808 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 6809 | |
f4dc4d17 | 6810 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 6811 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
6812 | } |
6813 | break; | |
74921315 KS |
6814 | case DW_TAG_imported_declaration: |
6815 | add_partial_symbol (pdi, cu); | |
6816 | break; | |
c906108c SS |
6817 | default: |
6818 | break; | |
6819 | } | |
6820 | } | |
6821 | ||
72bf9492 DJ |
6822 | /* If the die has a sibling, skip to the sibling. */ |
6823 | ||
6824 | pdi = pdi->die_sibling; | |
6825 | } | |
6826 | } | |
6827 | ||
6828 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 6829 | |
72bf9492 | 6830 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 6831 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
6832 | Enumerators are an exception; they use the scope of their parent |
6833 | enumeration type, i.e. the name of the enumeration type is not | |
6834 | prepended to the enumerator. | |
91c24f0a | 6835 | |
72bf9492 DJ |
6836 | There are two complexities. One is DW_AT_specification; in this |
6837 | case "parent" means the parent of the target of the specification, | |
6838 | instead of the direct parent of the DIE. The other is compilers | |
6839 | which do not emit DW_TAG_namespace; in this case we try to guess | |
6840 | the fully qualified name of structure types from their members' | |
6841 | linkage names. This must be done using the DIE's children rather | |
6842 | than the children of any DW_AT_specification target. We only need | |
6843 | to do this for structures at the top level, i.e. if the target of | |
6844 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
6845 | have a parent. */ | |
6846 | ||
6847 | /* Compute the scope prefix associated with PDI's parent, in | |
6848 | compilation unit CU. The result will be allocated on CU's | |
6849 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
6850 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 6851 | static const char * |
72bf9492 DJ |
6852 | partial_die_parent_scope (struct partial_die_info *pdi, |
6853 | struct dwarf2_cu *cu) | |
6854 | { | |
15d034d0 | 6855 | const char *grandparent_scope; |
72bf9492 | 6856 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 6857 | |
72bf9492 DJ |
6858 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
6859 | then this means the parent of the specification DIE. */ | |
6860 | ||
6861 | real_pdi = pdi; | |
72bf9492 | 6862 | while (real_pdi->has_specification) |
36586728 TT |
6863 | real_pdi = find_partial_die (real_pdi->spec_offset, |
6864 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
6865 | |
6866 | parent = real_pdi->die_parent; | |
6867 | if (parent == NULL) | |
6868 | return NULL; | |
6869 | ||
6870 | if (parent->scope_set) | |
6871 | return parent->scope; | |
6872 | ||
6873 | fixup_partial_die (parent, cu); | |
6874 | ||
10b3939b | 6875 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 6876 | |
acebe513 UW |
6877 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
6878 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
6879 | Work around this problem here. */ | |
6880 | if (cu->language == language_cplus | |
6e70227d | 6881 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
6882 | && strcmp (parent->name, "::") == 0 |
6883 | && grandparent_scope == NULL) | |
6884 | { | |
6885 | parent->scope = NULL; | |
6886 | parent->scope_set = 1; | |
6887 | return NULL; | |
6888 | } | |
6889 | ||
9c6c53f7 SA |
6890 | if (pdi->tag == DW_TAG_enumerator) |
6891 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
6892 | parent->scope = grandparent_scope; | |
6893 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 6894 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
6895 | || parent->tag == DW_TAG_structure_type |
6896 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 6897 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
6898 | || parent->tag == DW_TAG_union_type |
6899 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
6900 | { |
6901 | if (grandparent_scope == NULL) | |
6902 | parent->scope = parent->name; | |
6903 | else | |
3e43a32a MS |
6904 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
6905 | grandparent_scope, | |
f55ee35c | 6906 | parent->name, 0, cu); |
72bf9492 | 6907 | } |
72bf9492 DJ |
6908 | else |
6909 | { | |
6910 | /* FIXME drow/2004-04-01: What should we be doing with | |
6911 | function-local names? For partial symbols, we should probably be | |
6912 | ignoring them. */ | |
6913 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6914 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 6915 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 6916 | parent->scope = grandparent_scope; |
c906108c SS |
6917 | } |
6918 | ||
72bf9492 DJ |
6919 | parent->scope_set = 1; |
6920 | return parent->scope; | |
6921 | } | |
6922 | ||
6923 | /* Return the fully scoped name associated with PDI, from compilation unit | |
6924 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 6925 | |
72bf9492 DJ |
6926 | static char * |
6927 | partial_die_full_name (struct partial_die_info *pdi, | |
6928 | struct dwarf2_cu *cu) | |
6929 | { | |
15d034d0 | 6930 | const char *parent_scope; |
72bf9492 | 6931 | |
98bfdba5 PA |
6932 | /* If this is a template instantiation, we can not work out the |
6933 | template arguments from partial DIEs. So, unfortunately, we have | |
6934 | to go through the full DIEs. At least any work we do building | |
6935 | types here will be reused if full symbols are loaded later. */ | |
6936 | if (pdi->has_template_arguments) | |
6937 | { | |
6938 | fixup_partial_die (pdi, cu); | |
6939 | ||
6940 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
6941 | { | |
6942 | struct die_info *die; | |
6943 | struct attribute attr; | |
6944 | struct dwarf2_cu *ref_cu = cu; | |
6945 | ||
b64f50a1 | 6946 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 6947 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 6948 | attr.form = DW_FORM_ref_addr; |
4568ecf9 | 6949 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
6950 | die = follow_die_ref (NULL, &attr, &ref_cu); |
6951 | ||
6952 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
6953 | } | |
6954 | } | |
6955 | ||
72bf9492 DJ |
6956 | parent_scope = partial_die_parent_scope (pdi, cu); |
6957 | if (parent_scope == NULL) | |
6958 | return NULL; | |
6959 | else | |
f55ee35c | 6960 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
6961 | } |
6962 | ||
6963 | static void | |
72bf9492 | 6964 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 6965 | { |
e7c27a73 | 6966 | struct objfile *objfile = cu->objfile; |
3e29f34a | 6967 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 6968 | CORE_ADDR addr = 0; |
15d034d0 | 6969 | const char *actual_name = NULL; |
e142c38c | 6970 | CORE_ADDR baseaddr; |
15d034d0 | 6971 | char *built_actual_name; |
e142c38c DJ |
6972 | |
6973 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6974 | |
15d034d0 TT |
6975 | built_actual_name = partial_die_full_name (pdi, cu); |
6976 | if (built_actual_name != NULL) | |
6977 | actual_name = built_actual_name; | |
63d06c5c | 6978 | |
72bf9492 DJ |
6979 | if (actual_name == NULL) |
6980 | actual_name = pdi->name; | |
6981 | ||
c906108c SS |
6982 | switch (pdi->tag) |
6983 | { | |
6984 | case DW_TAG_subprogram: | |
3e29f34a | 6985 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 6986 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 6987 | { |
2cfa0c8d JB |
6988 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
6989 | of the global scope. But in Ada, we want to be able to access | |
6990 | nested procedures globally. So all Ada subprograms are stored | |
6991 | in the global scope. */ | |
f47fb265 | 6992 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6993 | built_actual_name != NULL, |
f47fb265 MS |
6994 | VAR_DOMAIN, LOC_BLOCK, |
6995 | &objfile->global_psymbols, | |
1762568f | 6996 | addr, cu->language, objfile); |
c906108c SS |
6997 | } |
6998 | else | |
6999 | { | |
f47fb265 | 7000 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7001 | built_actual_name != NULL, |
f47fb265 MS |
7002 | VAR_DOMAIN, LOC_BLOCK, |
7003 | &objfile->static_psymbols, | |
1762568f | 7004 | addr, cu->language, objfile); |
c906108c | 7005 | } |
0c1b455e TT |
7006 | |
7007 | if (pdi->main_subprogram && actual_name != NULL) | |
7008 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 7009 | break; |
72929c62 JB |
7010 | case DW_TAG_constant: |
7011 | { | |
7012 | struct psymbol_allocation_list *list; | |
7013 | ||
7014 | if (pdi->is_external) | |
7015 | list = &objfile->global_psymbols; | |
7016 | else | |
7017 | list = &objfile->static_psymbols; | |
f47fb265 | 7018 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7019 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
1762568f | 7020 | list, 0, cu->language, objfile); |
72929c62 JB |
7021 | } |
7022 | break; | |
c906108c | 7023 | case DW_TAG_variable: |
95554aad TT |
7024 | if (pdi->d.locdesc) |
7025 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 7026 | |
95554aad | 7027 | if (pdi->d.locdesc |
caac4577 JG |
7028 | && addr == 0 |
7029 | && !dwarf2_per_objfile->has_section_at_zero) | |
7030 | { | |
7031 | /* A global or static variable may also have been stripped | |
7032 | out by the linker if unused, in which case its address | |
7033 | will be nullified; do not add such variables into partial | |
7034 | symbol table then. */ | |
7035 | } | |
7036 | else if (pdi->is_external) | |
c906108c SS |
7037 | { |
7038 | /* Global Variable. | |
7039 | Don't enter into the minimal symbol tables as there is | |
7040 | a minimal symbol table entry from the ELF symbols already. | |
7041 | Enter into partial symbol table if it has a location | |
7042 | descriptor or a type. | |
7043 | If the location descriptor is missing, new_symbol will create | |
7044 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
7045 | be determined from the minimal symbol table whenever the variable | |
7046 | is referenced. | |
7047 | The address for the partial symbol table entry is not | |
7048 | used by GDB, but it comes in handy for debugging partial symbol | |
7049 | table building. */ | |
7050 | ||
95554aad | 7051 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 7052 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7053 | built_actual_name != NULL, |
f47fb265 MS |
7054 | VAR_DOMAIN, LOC_STATIC, |
7055 | &objfile->global_psymbols, | |
1762568f | 7056 | addr + baseaddr, |
f47fb265 | 7057 | cu->language, objfile); |
c906108c SS |
7058 | } |
7059 | else | |
7060 | { | |
ff908ebf AW |
7061 | int has_loc = pdi->d.locdesc != NULL; |
7062 | ||
7063 | /* Static Variable. Skip symbols whose value we cannot know (those | |
7064 | without location descriptors or constant values). */ | |
7065 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 7066 | { |
15d034d0 | 7067 | xfree (built_actual_name); |
decbce07 MS |
7068 | return; |
7069 | } | |
ff908ebf | 7070 | |
f47fb265 | 7071 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7072 | built_actual_name != NULL, |
f47fb265 MS |
7073 | VAR_DOMAIN, LOC_STATIC, |
7074 | &objfile->static_psymbols, | |
ff908ebf | 7075 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, |
f47fb265 | 7076 | cu->language, objfile); |
c906108c SS |
7077 | } |
7078 | break; | |
7079 | case DW_TAG_typedef: | |
7080 | case DW_TAG_base_type: | |
a02abb62 | 7081 | case DW_TAG_subrange_type: |
38d518c9 | 7082 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7083 | built_actual_name != NULL, |
176620f1 | 7084 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 7085 | &objfile->static_psymbols, |
1762568f | 7086 | 0, cu->language, objfile); |
c906108c | 7087 | break; |
74921315 | 7088 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
7089 | case DW_TAG_namespace: |
7090 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 7091 | built_actual_name != NULL, |
72bf9492 DJ |
7092 | VAR_DOMAIN, LOC_TYPEDEF, |
7093 | &objfile->global_psymbols, | |
1762568f | 7094 | 0, cu->language, objfile); |
72bf9492 | 7095 | break; |
530e8392 KB |
7096 | case DW_TAG_module: |
7097 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
7098 | built_actual_name != NULL, | |
7099 | MODULE_DOMAIN, LOC_TYPEDEF, | |
7100 | &objfile->global_psymbols, | |
1762568f | 7101 | 0, cu->language, objfile); |
530e8392 | 7102 | break; |
c906108c | 7103 | case DW_TAG_class_type: |
680b30c7 | 7104 | case DW_TAG_interface_type: |
c906108c SS |
7105 | case DW_TAG_structure_type: |
7106 | case DW_TAG_union_type: | |
7107 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
7108 | /* Skip external references. The DWARF standard says in the section |
7109 | about "Structure, Union, and Class Type Entries": "An incomplete | |
7110 | structure, union or class type is represented by a structure, | |
7111 | union or class entry that does not have a byte size attribute | |
7112 | and that has a DW_AT_declaration attribute." */ | |
7113 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 7114 | { |
15d034d0 | 7115 | xfree (built_actual_name); |
decbce07 MS |
7116 | return; |
7117 | } | |
fa4028e9 | 7118 | |
63d06c5c DC |
7119 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
7120 | static vs. global. */ | |
38d518c9 | 7121 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7122 | built_actual_name != NULL, |
176620f1 | 7123 | STRUCT_DOMAIN, LOC_TYPEDEF, |
9c37b5ae | 7124 | cu->language == language_cplus |
63d06c5c DC |
7125 | ? &objfile->global_psymbols |
7126 | : &objfile->static_psymbols, | |
1762568f | 7127 | 0, cu->language, objfile); |
c906108c | 7128 | |
c906108c SS |
7129 | break; |
7130 | case DW_TAG_enumerator: | |
38d518c9 | 7131 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7132 | built_actual_name != NULL, |
176620f1 | 7133 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 7134 | cu->language == language_cplus |
f6fe98ef DJ |
7135 | ? &objfile->global_psymbols |
7136 | : &objfile->static_psymbols, | |
1762568f | 7137 | 0, cu->language, objfile); |
c906108c SS |
7138 | break; |
7139 | default: | |
7140 | break; | |
7141 | } | |
5c4e30ca | 7142 | |
15d034d0 | 7143 | xfree (built_actual_name); |
c906108c SS |
7144 | } |
7145 | ||
5c4e30ca DC |
7146 | /* Read a partial die corresponding to a namespace; also, add a symbol |
7147 | corresponding to that namespace to the symbol table. NAMESPACE is | |
7148 | the name of the enclosing namespace. */ | |
91c24f0a | 7149 | |
72bf9492 DJ |
7150 | static void |
7151 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 7152 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 7153 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 7154 | { |
72bf9492 | 7155 | /* Add a symbol for the namespace. */ |
e7c27a73 | 7156 | |
72bf9492 | 7157 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
7158 | |
7159 | /* Now scan partial symbols in that namespace. */ | |
7160 | ||
91c24f0a | 7161 | if (pdi->has_children) |
cdc07690 | 7162 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
7163 | } |
7164 | ||
5d7cb8df JK |
7165 | /* Read a partial die corresponding to a Fortran module. */ |
7166 | ||
7167 | static void | |
7168 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 7169 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 7170 | { |
530e8392 KB |
7171 | /* Add a symbol for the namespace. */ |
7172 | ||
7173 | add_partial_symbol (pdi, cu); | |
7174 | ||
f55ee35c | 7175 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
7176 | |
7177 | if (pdi->has_children) | |
cdc07690 | 7178 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
7179 | } |
7180 | ||
bc30ff58 JB |
7181 | /* Read a partial die corresponding to a subprogram and create a partial |
7182 | symbol for that subprogram. When the CU language allows it, this | |
7183 | routine also defines a partial symbol for each nested subprogram | |
cdc07690 | 7184 | that this subprogram contains. If SET_ADDRMAP is true, record the |
428fc5fc YQ |
7185 | covered ranges in the addrmap. Set *LOWPC and *HIGHPC to the lowest |
7186 | and highest PC values found in PDI. | |
6e70227d | 7187 | |
cdc07690 YQ |
7188 | PDI may also be a lexical block, in which case we simply search |
7189 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
7190 | Again, this is only performed when the CU language allows this |
7191 | type of definitions. */ | |
7192 | ||
7193 | static void | |
7194 | add_partial_subprogram (struct partial_die_info *pdi, | |
7195 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 7196 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 JB |
7197 | { |
7198 | if (pdi->tag == DW_TAG_subprogram) | |
7199 | { | |
7200 | if (pdi->has_pc_info) | |
7201 | { | |
7202 | if (pdi->lowpc < *lowpc) | |
7203 | *lowpc = pdi->lowpc; | |
7204 | if (pdi->highpc > *highpc) | |
7205 | *highpc = pdi->highpc; | |
cdc07690 | 7206 | if (set_addrmap) |
5734ee8b | 7207 | { |
5734ee8b | 7208 | struct objfile *objfile = cu->objfile; |
3e29f34a MR |
7209 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
7210 | CORE_ADDR baseaddr; | |
7211 | CORE_ADDR highpc; | |
7212 | CORE_ADDR lowpc; | |
5734ee8b DJ |
7213 | |
7214 | baseaddr = ANOFFSET (objfile->section_offsets, | |
7215 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
7216 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
7217 | pdi->lowpc + baseaddr); | |
7218 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
7219 | pdi->highpc + baseaddr); | |
7220 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 7221 | cu->per_cu->v.psymtab); |
5734ee8b | 7222 | } |
481860b3 GB |
7223 | } |
7224 | ||
7225 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
7226 | { | |
bc30ff58 | 7227 | if (!pdi->is_declaration) |
e8d05480 JB |
7228 | /* Ignore subprogram DIEs that do not have a name, they are |
7229 | illegal. Do not emit a complaint at this point, we will | |
7230 | do so when we convert this psymtab into a symtab. */ | |
7231 | if (pdi->name) | |
7232 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
7233 | } |
7234 | } | |
6e70227d | 7235 | |
bc30ff58 JB |
7236 | if (! pdi->has_children) |
7237 | return; | |
7238 | ||
7239 | if (cu->language == language_ada) | |
7240 | { | |
7241 | pdi = pdi->die_child; | |
7242 | while (pdi != NULL) | |
7243 | { | |
7244 | fixup_partial_die (pdi, cu); | |
7245 | if (pdi->tag == DW_TAG_subprogram | |
7246 | || pdi->tag == DW_TAG_lexical_block) | |
cdc07690 | 7247 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
7248 | pdi = pdi->die_sibling; |
7249 | } | |
7250 | } | |
7251 | } | |
7252 | ||
91c24f0a DC |
7253 | /* Read a partial die corresponding to an enumeration type. */ |
7254 | ||
72bf9492 DJ |
7255 | static void |
7256 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
7257 | struct dwarf2_cu *cu) | |
91c24f0a | 7258 | { |
72bf9492 | 7259 | struct partial_die_info *pdi; |
91c24f0a DC |
7260 | |
7261 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
7262 | add_partial_symbol (enum_pdi, cu); |
7263 | ||
7264 | pdi = enum_pdi->die_child; | |
7265 | while (pdi) | |
91c24f0a | 7266 | { |
72bf9492 | 7267 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 7268 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 7269 | else |
72bf9492 DJ |
7270 | add_partial_symbol (pdi, cu); |
7271 | pdi = pdi->die_sibling; | |
91c24f0a | 7272 | } |
91c24f0a DC |
7273 | } |
7274 | ||
6caca83c CC |
7275 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
7276 | ||
7277 | static unsigned int | |
d521ce57 | 7278 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
7279 | { |
7280 | unsigned int bytes_read; | |
7281 | ||
7282 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7283 | } | |
7284 | ||
4bb7a0a7 DJ |
7285 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
7286 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
7287 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
7288 | the initial number. */ | |
7289 | ||
7290 | static struct abbrev_info * | |
d521ce57 | 7291 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 7292 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
7293 | { |
7294 | bfd *abfd = cu->objfile->obfd; | |
7295 | unsigned int abbrev_number; | |
7296 | struct abbrev_info *abbrev; | |
7297 | ||
7298 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
7299 | ||
7300 | if (abbrev_number == 0) | |
7301 | return NULL; | |
7302 | ||
433df2d4 | 7303 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
7304 | if (!abbrev) |
7305 | { | |
422b9917 DE |
7306 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
7307 | " at offset 0x%x [in module %s]"), | |
7308 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", | |
7309 | cu->header.offset.sect_off, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
7310 | } |
7311 | ||
7312 | return abbrev; | |
7313 | } | |
7314 | ||
93311388 DE |
7315 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7316 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
7317 | DIE. Any children of the skipped DIEs will also be skipped. */ |
7318 | ||
d521ce57 TT |
7319 | static const gdb_byte * |
7320 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 7321 | { |
dee91e82 | 7322 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
7323 | struct abbrev_info *abbrev; |
7324 | unsigned int bytes_read; | |
7325 | ||
7326 | while (1) | |
7327 | { | |
7328 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
7329 | if (abbrev == NULL) | |
7330 | return info_ptr + bytes_read; | |
7331 | else | |
dee91e82 | 7332 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
7333 | } |
7334 | } | |
7335 | ||
93311388 DE |
7336 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7337 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
7338 | abbrev corresponding to that skipped uleb128 should be passed in |
7339 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
7340 | children. */ | |
7341 | ||
d521ce57 TT |
7342 | static const gdb_byte * |
7343 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 7344 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
7345 | { |
7346 | unsigned int bytes_read; | |
7347 | struct attribute attr; | |
dee91e82 DE |
7348 | bfd *abfd = reader->abfd; |
7349 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 7350 | const gdb_byte *buffer = reader->buffer; |
f664829e | 7351 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
7352 | unsigned int form, i; |
7353 | ||
7354 | for (i = 0; i < abbrev->num_attrs; i++) | |
7355 | { | |
7356 | /* The only abbrev we care about is DW_AT_sibling. */ | |
7357 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
7358 | { | |
dee91e82 | 7359 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 7360 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
7361 | complaint (&symfile_complaints, |
7362 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 7363 | else |
b9502d3f WN |
7364 | { |
7365 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
7366 | const gdb_byte *sibling_ptr = buffer + off; | |
7367 | ||
7368 | if (sibling_ptr < info_ptr) | |
7369 | complaint (&symfile_complaints, | |
7370 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
7371 | else if (sibling_ptr > reader->buffer_end) |
7372 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
7373 | else |
7374 | return sibling_ptr; | |
7375 | } | |
4bb7a0a7 DJ |
7376 | } |
7377 | ||
7378 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
7379 | form = abbrev->attrs[i].form; | |
7380 | skip_attribute: | |
7381 | switch (form) | |
7382 | { | |
4bb7a0a7 | 7383 | case DW_FORM_ref_addr: |
ae411497 TT |
7384 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
7385 | and later it is offset sized. */ | |
7386 | if (cu->header.version == 2) | |
7387 | info_ptr += cu->header.addr_size; | |
7388 | else | |
7389 | info_ptr += cu->header.offset_size; | |
7390 | break; | |
36586728 TT |
7391 | case DW_FORM_GNU_ref_alt: |
7392 | info_ptr += cu->header.offset_size; | |
7393 | break; | |
ae411497 | 7394 | case DW_FORM_addr: |
4bb7a0a7 DJ |
7395 | info_ptr += cu->header.addr_size; |
7396 | break; | |
7397 | case DW_FORM_data1: | |
7398 | case DW_FORM_ref1: | |
7399 | case DW_FORM_flag: | |
7400 | info_ptr += 1; | |
7401 | break; | |
2dc7f7b3 | 7402 | case DW_FORM_flag_present: |
43988095 | 7403 | case DW_FORM_implicit_const: |
2dc7f7b3 | 7404 | break; |
4bb7a0a7 DJ |
7405 | case DW_FORM_data2: |
7406 | case DW_FORM_ref2: | |
7407 | info_ptr += 2; | |
7408 | break; | |
7409 | case DW_FORM_data4: | |
7410 | case DW_FORM_ref4: | |
7411 | info_ptr += 4; | |
7412 | break; | |
7413 | case DW_FORM_data8: | |
7414 | case DW_FORM_ref8: | |
55f1336d | 7415 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
7416 | info_ptr += 8; |
7417 | break; | |
0224619f JK |
7418 | case DW_FORM_data16: |
7419 | info_ptr += 16; | |
7420 | break; | |
4bb7a0a7 | 7421 | case DW_FORM_string: |
9b1c24c8 | 7422 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
7423 | info_ptr += bytes_read; |
7424 | break; | |
2dc7f7b3 | 7425 | case DW_FORM_sec_offset: |
4bb7a0a7 | 7426 | case DW_FORM_strp: |
36586728 | 7427 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
7428 | info_ptr += cu->header.offset_size; |
7429 | break; | |
2dc7f7b3 | 7430 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
7431 | case DW_FORM_block: |
7432 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7433 | info_ptr += bytes_read; | |
7434 | break; | |
7435 | case DW_FORM_block1: | |
7436 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
7437 | break; | |
7438 | case DW_FORM_block2: | |
7439 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
7440 | break; | |
7441 | case DW_FORM_block4: | |
7442 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
7443 | break; | |
7444 | case DW_FORM_sdata: | |
7445 | case DW_FORM_udata: | |
7446 | case DW_FORM_ref_udata: | |
3019eac3 DE |
7447 | case DW_FORM_GNU_addr_index: |
7448 | case DW_FORM_GNU_str_index: | |
d521ce57 | 7449 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
7450 | break; |
7451 | case DW_FORM_indirect: | |
7452 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7453 | info_ptr += bytes_read; | |
7454 | /* We need to continue parsing from here, so just go back to | |
7455 | the top. */ | |
7456 | goto skip_attribute; | |
7457 | ||
7458 | default: | |
3e43a32a MS |
7459 | error (_("Dwarf Error: Cannot handle %s " |
7460 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
7461 | dwarf_form_name (form), |
7462 | bfd_get_filename (abfd)); | |
7463 | } | |
7464 | } | |
7465 | ||
7466 | if (abbrev->has_children) | |
dee91e82 | 7467 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
7468 | else |
7469 | return info_ptr; | |
7470 | } | |
7471 | ||
93311388 | 7472 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 7473 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 7474 | |
d521ce57 | 7475 | static const gdb_byte * |
dee91e82 DE |
7476 | locate_pdi_sibling (const struct die_reader_specs *reader, |
7477 | struct partial_die_info *orig_pdi, | |
d521ce57 | 7478 | const gdb_byte *info_ptr) |
91c24f0a DC |
7479 | { |
7480 | /* Do we know the sibling already? */ | |
72bf9492 | 7481 | |
91c24f0a DC |
7482 | if (orig_pdi->sibling) |
7483 | return orig_pdi->sibling; | |
7484 | ||
7485 | /* Are there any children to deal with? */ | |
7486 | ||
7487 | if (!orig_pdi->has_children) | |
7488 | return info_ptr; | |
7489 | ||
4bb7a0a7 | 7490 | /* Skip the children the long way. */ |
91c24f0a | 7491 | |
dee91e82 | 7492 | return skip_children (reader, info_ptr); |
91c24f0a DC |
7493 | } |
7494 | ||
257e7a09 | 7495 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 7496 | not NULL. */ |
c906108c SS |
7497 | |
7498 | static void | |
257e7a09 YQ |
7499 | dwarf2_read_symtab (struct partial_symtab *self, |
7500 | struct objfile *objfile) | |
c906108c | 7501 | { |
257e7a09 | 7502 | if (self->readin) |
c906108c | 7503 | { |
442e4d9c | 7504 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 7505 | self->filename); |
442e4d9c YQ |
7506 | } |
7507 | else | |
7508 | { | |
7509 | if (info_verbose) | |
c906108c | 7510 | { |
442e4d9c | 7511 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 7512 | self->filename); |
442e4d9c | 7513 | gdb_flush (gdb_stdout); |
c906108c | 7514 | } |
c906108c | 7515 | |
442e4d9c | 7516 | /* Restore our global data. */ |
9a3c8263 SM |
7517 | dwarf2_per_objfile |
7518 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
7519 | dwarf2_objfile_data_key); | |
10b3939b | 7520 | |
442e4d9c YQ |
7521 | /* If this psymtab is constructed from a debug-only objfile, the |
7522 | has_section_at_zero flag will not necessarily be correct. We | |
7523 | can get the correct value for this flag by looking at the data | |
7524 | associated with the (presumably stripped) associated objfile. */ | |
7525 | if (objfile->separate_debug_objfile_backlink) | |
7526 | { | |
7527 | struct dwarf2_per_objfile *dpo_backlink | |
9a3c8263 SM |
7528 | = ((struct dwarf2_per_objfile *) |
7529 | objfile_data (objfile->separate_debug_objfile_backlink, | |
7530 | dwarf2_objfile_data_key)); | |
9a619af0 | 7531 | |
442e4d9c YQ |
7532 | dwarf2_per_objfile->has_section_at_zero |
7533 | = dpo_backlink->has_section_at_zero; | |
7534 | } | |
b2ab525c | 7535 | |
442e4d9c | 7536 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 7537 | |
257e7a09 | 7538 | psymtab_to_symtab_1 (self); |
c906108c | 7539 | |
442e4d9c YQ |
7540 | /* Finish up the debug error message. */ |
7541 | if (info_verbose) | |
7542 | printf_filtered (_("done.\n")); | |
c906108c | 7543 | } |
95554aad TT |
7544 | |
7545 | process_cu_includes (); | |
c906108c | 7546 | } |
9cdd5dbd DE |
7547 | \f |
7548 | /* Reading in full CUs. */ | |
c906108c | 7549 | |
10b3939b DJ |
7550 | /* Add PER_CU to the queue. */ |
7551 | ||
7552 | static void | |
95554aad TT |
7553 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7554 | enum language pretend_language) | |
10b3939b DJ |
7555 | { |
7556 | struct dwarf2_queue_item *item; | |
7557 | ||
7558 | per_cu->queued = 1; | |
8d749320 | 7559 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 7560 | item->per_cu = per_cu; |
95554aad | 7561 | item->pretend_language = pretend_language; |
10b3939b DJ |
7562 | item->next = NULL; |
7563 | ||
7564 | if (dwarf2_queue == NULL) | |
7565 | dwarf2_queue = item; | |
7566 | else | |
7567 | dwarf2_queue_tail->next = item; | |
7568 | ||
7569 | dwarf2_queue_tail = item; | |
7570 | } | |
7571 | ||
89e63ee4 DE |
7572 | /* If PER_CU is not yet queued, add it to the queue. |
7573 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
7574 | dependency. | |
0907af0c | 7575 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
7576 | meaning either PER_CU is already queued or it is already loaded. |
7577 | ||
7578 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
7579 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
7580 | |
7581 | static int | |
89e63ee4 | 7582 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
7583 | struct dwarf2_per_cu_data *per_cu, |
7584 | enum language pretend_language) | |
7585 | { | |
7586 | /* We may arrive here during partial symbol reading, if we need full | |
7587 | DIEs to process an unusual case (e.g. template arguments). Do | |
7588 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
7589 | if (dwarf2_per_objfile->reading_partial_symbols) | |
7590 | { | |
7591 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
7592 | return 1; | |
7593 | return 0; | |
7594 | } | |
7595 | ||
7596 | /* Mark the dependence relation so that we don't flush PER_CU | |
7597 | too early. */ | |
89e63ee4 DE |
7598 | if (dependent_cu != NULL) |
7599 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
7600 | |
7601 | /* If it's already on the queue, we have nothing to do. */ | |
7602 | if (per_cu->queued) | |
7603 | return 0; | |
7604 | ||
7605 | /* If the compilation unit is already loaded, just mark it as | |
7606 | used. */ | |
7607 | if (per_cu->cu != NULL) | |
7608 | { | |
7609 | per_cu->cu->last_used = 0; | |
7610 | return 0; | |
7611 | } | |
7612 | ||
7613 | /* Add it to the queue. */ | |
7614 | queue_comp_unit (per_cu, pretend_language); | |
7615 | ||
7616 | return 1; | |
7617 | } | |
7618 | ||
10b3939b DJ |
7619 | /* Process the queue. */ |
7620 | ||
7621 | static void | |
a0f42c21 | 7622 | process_queue (void) |
10b3939b DJ |
7623 | { |
7624 | struct dwarf2_queue_item *item, *next_item; | |
7625 | ||
b4f54984 | 7626 | if (dwarf_read_debug) |
45cfd468 DE |
7627 | { |
7628 | fprintf_unfiltered (gdb_stdlog, | |
7629 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 7630 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
7631 | } |
7632 | ||
03dd20cc DJ |
7633 | /* The queue starts out with one item, but following a DIE reference |
7634 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
7635 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
7636 | { | |
cc12ce38 DE |
7637 | if ((dwarf2_per_objfile->using_index |
7638 | ? !item->per_cu->v.quick->compunit_symtab | |
7639 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
7640 | /* Skip dummy CUs. */ | |
7641 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
7642 | { |
7643 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 7644 | unsigned int debug_print_threshold; |
247f5c4f | 7645 | char buf[100]; |
f4dc4d17 | 7646 | |
247f5c4f | 7647 | if (per_cu->is_debug_types) |
f4dc4d17 | 7648 | { |
247f5c4f DE |
7649 | struct signatured_type *sig_type = |
7650 | (struct signatured_type *) per_cu; | |
7651 | ||
7652 | sprintf (buf, "TU %s at offset 0x%x", | |
73be47f5 DE |
7653 | hex_string (sig_type->signature), |
7654 | per_cu->offset.sect_off); | |
7655 | /* There can be 100s of TUs. | |
7656 | Only print them in verbose mode. */ | |
7657 | debug_print_threshold = 2; | |
f4dc4d17 | 7658 | } |
247f5c4f | 7659 | else |
73be47f5 DE |
7660 | { |
7661 | sprintf (buf, "CU at offset 0x%x", per_cu->offset.sect_off); | |
7662 | debug_print_threshold = 1; | |
7663 | } | |
247f5c4f | 7664 | |
b4f54984 | 7665 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 7666 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
7667 | |
7668 | if (per_cu->is_debug_types) | |
7669 | process_full_type_unit (per_cu, item->pretend_language); | |
7670 | else | |
7671 | process_full_comp_unit (per_cu, item->pretend_language); | |
7672 | ||
b4f54984 | 7673 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 7674 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 7675 | } |
10b3939b DJ |
7676 | |
7677 | item->per_cu->queued = 0; | |
7678 | next_item = item->next; | |
7679 | xfree (item); | |
7680 | } | |
7681 | ||
7682 | dwarf2_queue_tail = NULL; | |
45cfd468 | 7683 | |
b4f54984 | 7684 | if (dwarf_read_debug) |
45cfd468 DE |
7685 | { |
7686 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 7687 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 7688 | } |
10b3939b DJ |
7689 | } |
7690 | ||
7691 | /* Free all allocated queue entries. This function only releases anything if | |
7692 | an error was thrown; if the queue was processed then it would have been | |
7693 | freed as we went along. */ | |
7694 | ||
7695 | static void | |
7696 | dwarf2_release_queue (void *dummy) | |
7697 | { | |
7698 | struct dwarf2_queue_item *item, *last; | |
7699 | ||
7700 | item = dwarf2_queue; | |
7701 | while (item) | |
7702 | { | |
7703 | /* Anything still marked queued is likely to be in an | |
7704 | inconsistent state, so discard it. */ | |
7705 | if (item->per_cu->queued) | |
7706 | { | |
7707 | if (item->per_cu->cu != NULL) | |
dee91e82 | 7708 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
7709 | item->per_cu->queued = 0; |
7710 | } | |
7711 | ||
7712 | last = item; | |
7713 | item = item->next; | |
7714 | xfree (last); | |
7715 | } | |
7716 | ||
7717 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
7718 | } | |
7719 | ||
7720 | /* Read in full symbols for PST, and anything it depends on. */ | |
7721 | ||
c906108c | 7722 | static void |
fba45db2 | 7723 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 7724 | { |
10b3939b | 7725 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
7726 | int i; |
7727 | ||
95554aad TT |
7728 | if (pst->readin) |
7729 | return; | |
7730 | ||
aaa75496 | 7731 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
7732 | if (!pst->dependencies[i]->readin |
7733 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
7734 | { |
7735 | /* Inform about additional files that need to be read in. */ | |
7736 | if (info_verbose) | |
7737 | { | |
a3f17187 | 7738 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
7739 | fputs_filtered (" ", gdb_stdout); |
7740 | wrap_here (""); | |
7741 | fputs_filtered ("and ", gdb_stdout); | |
7742 | wrap_here (""); | |
7743 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 7744 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
7745 | gdb_flush (gdb_stdout); |
7746 | } | |
7747 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
7748 | } | |
7749 | ||
9a3c8263 | 7750 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
7751 | |
7752 | if (per_cu == NULL) | |
aaa75496 JB |
7753 | { |
7754 | /* It's an include file, no symbols to read for it. | |
7755 | Everything is in the parent symtab. */ | |
7756 | pst->readin = 1; | |
7757 | return; | |
7758 | } | |
c906108c | 7759 | |
a0f42c21 | 7760 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
7761 | } |
7762 | ||
dee91e82 DE |
7763 | /* Trivial hash function for die_info: the hash value of a DIE |
7764 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 7765 | |
dee91e82 DE |
7766 | static hashval_t |
7767 | die_hash (const void *item) | |
10b3939b | 7768 | { |
9a3c8263 | 7769 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 7770 | |
dee91e82 DE |
7771 | return die->offset.sect_off; |
7772 | } | |
63d06c5c | 7773 | |
dee91e82 DE |
7774 | /* Trivial comparison function for die_info structures: two DIEs |
7775 | are equal if they have the same offset. */ | |
98bfdba5 | 7776 | |
dee91e82 DE |
7777 | static int |
7778 | die_eq (const void *item_lhs, const void *item_rhs) | |
7779 | { | |
9a3c8263 SM |
7780 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
7781 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 7782 | |
dee91e82 DE |
7783 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
7784 | } | |
c906108c | 7785 | |
dee91e82 DE |
7786 | /* die_reader_func for load_full_comp_unit. |
7787 | This is identical to read_signatured_type_reader, | |
7788 | but is kept separate for now. */ | |
c906108c | 7789 | |
dee91e82 DE |
7790 | static void |
7791 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7792 | const gdb_byte *info_ptr, |
dee91e82 DE |
7793 | struct die_info *comp_unit_die, |
7794 | int has_children, | |
7795 | void *data) | |
7796 | { | |
7797 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 7798 | enum language *language_ptr = (enum language *) data; |
6caca83c | 7799 | |
dee91e82 DE |
7800 | gdb_assert (cu->die_hash == NULL); |
7801 | cu->die_hash = | |
7802 | htab_create_alloc_ex (cu->header.length / 12, | |
7803 | die_hash, | |
7804 | die_eq, | |
7805 | NULL, | |
7806 | &cu->comp_unit_obstack, | |
7807 | hashtab_obstack_allocate, | |
7808 | dummy_obstack_deallocate); | |
e142c38c | 7809 | |
dee91e82 DE |
7810 | if (has_children) |
7811 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
7812 | &info_ptr, comp_unit_die); | |
7813 | cu->dies = comp_unit_die; | |
7814 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
7815 | |
7816 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 7817 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 7818 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
7819 | or we won't be able to build types correctly. |
7820 | Similarly, if we do not read the producer, we can not apply | |
7821 | producer-specific interpretation. */ | |
95554aad | 7822 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 7823 | } |
10b3939b | 7824 | |
dee91e82 | 7825 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 7826 | |
dee91e82 | 7827 | static void |
95554aad TT |
7828 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
7829 | enum language pretend_language) | |
dee91e82 | 7830 | { |
3019eac3 | 7831 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 7832 | |
f4dc4d17 DE |
7833 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
7834 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
7835 | } |
7836 | ||
3da10d80 KS |
7837 | /* Add a DIE to the delayed physname list. */ |
7838 | ||
7839 | static void | |
7840 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
7841 | const char *name, struct die_info *die, | |
7842 | struct dwarf2_cu *cu) | |
7843 | { | |
7844 | struct delayed_method_info mi; | |
7845 | mi.type = type; | |
7846 | mi.fnfield_index = fnfield_index; | |
7847 | mi.index = index; | |
7848 | mi.name = name; | |
7849 | mi.die = die; | |
7850 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
7851 | } | |
7852 | ||
7853 | /* A cleanup for freeing the delayed method list. */ | |
7854 | ||
7855 | static void | |
7856 | free_delayed_list (void *ptr) | |
7857 | { | |
7858 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
7859 | if (cu->method_list != NULL) | |
7860 | { | |
7861 | VEC_free (delayed_method_info, cu->method_list); | |
7862 | cu->method_list = NULL; | |
7863 | } | |
7864 | } | |
7865 | ||
7866 | /* Compute the physnames of any methods on the CU's method list. | |
7867 | ||
7868 | The computation of method physnames is delayed in order to avoid the | |
7869 | (bad) condition that one of the method's formal parameters is of an as yet | |
7870 | incomplete type. */ | |
7871 | ||
7872 | static void | |
7873 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
7874 | { | |
7875 | int i; | |
7876 | struct delayed_method_info *mi; | |
7877 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
7878 | { | |
1d06ead6 | 7879 | const char *physname; |
3da10d80 KS |
7880 | struct fn_fieldlist *fn_flp |
7881 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 7882 | physname = dwarf2_physname (mi->name, mi->die, cu); |
005e54bb DE |
7883 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi->index) |
7884 | = physname ? physname : ""; | |
3da10d80 KS |
7885 | } |
7886 | } | |
7887 | ||
a766d390 DE |
7888 | /* Go objects should be embedded in a DW_TAG_module DIE, |
7889 | and it's not clear if/how imported objects will appear. | |
7890 | To keep Go support simple until that's worked out, | |
7891 | go back through what we've read and create something usable. | |
7892 | We could do this while processing each DIE, and feels kinda cleaner, | |
7893 | but that way is more invasive. | |
7894 | This is to, for example, allow the user to type "p var" or "b main" | |
7895 | without having to specify the package name, and allow lookups | |
7896 | of module.object to work in contexts that use the expression | |
7897 | parser. */ | |
7898 | ||
7899 | static void | |
7900 | fixup_go_packaging (struct dwarf2_cu *cu) | |
7901 | { | |
7902 | char *package_name = NULL; | |
7903 | struct pending *list; | |
7904 | int i; | |
7905 | ||
7906 | for (list = global_symbols; list != NULL; list = list->next) | |
7907 | { | |
7908 | for (i = 0; i < list->nsyms; ++i) | |
7909 | { | |
7910 | struct symbol *sym = list->symbol[i]; | |
7911 | ||
7912 | if (SYMBOL_LANGUAGE (sym) == language_go | |
7913 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
7914 | { | |
7915 | char *this_package_name = go_symbol_package_name (sym); | |
7916 | ||
7917 | if (this_package_name == NULL) | |
7918 | continue; | |
7919 | if (package_name == NULL) | |
7920 | package_name = this_package_name; | |
7921 | else | |
7922 | { | |
7923 | if (strcmp (package_name, this_package_name) != 0) | |
7924 | complaint (&symfile_complaints, | |
7925 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
7926 | (symbol_symtab (sym) != NULL |
7927 | ? symtab_to_filename_for_display | |
7928 | (symbol_symtab (sym)) | |
4262abfb | 7929 | : objfile_name (cu->objfile)), |
a766d390 DE |
7930 | this_package_name, package_name); |
7931 | xfree (this_package_name); | |
7932 | } | |
7933 | } | |
7934 | } | |
7935 | } | |
7936 | ||
7937 | if (package_name != NULL) | |
7938 | { | |
7939 | struct objfile *objfile = cu->objfile; | |
34a68019 | 7940 | const char *saved_package_name |
224c3ddb SM |
7941 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
7942 | package_name, | |
7943 | strlen (package_name)); | |
19f392bc UW |
7944 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
7945 | saved_package_name); | |
a766d390 DE |
7946 | struct symbol *sym; |
7947 | ||
7948 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7949 | ||
e623cf5d | 7950 | sym = allocate_symbol (objfile); |
f85f34ed | 7951 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
7952 | SYMBOL_SET_NAMES (sym, saved_package_name, |
7953 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
7954 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
7955 | e.g., "main" finds the "main" module and not C's main(). */ | |
7956 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 7957 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
7958 | SYMBOL_TYPE (sym) = type; |
7959 | ||
7960 | add_symbol_to_list (sym, &global_symbols); | |
7961 | ||
7962 | xfree (package_name); | |
7963 | } | |
7964 | } | |
7965 | ||
95554aad TT |
7966 | /* Return the symtab for PER_CU. This works properly regardless of |
7967 | whether we're using the index or psymtabs. */ | |
7968 | ||
43f3e411 DE |
7969 | static struct compunit_symtab * |
7970 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad TT |
7971 | { |
7972 | return (dwarf2_per_objfile->using_index | |
43f3e411 DE |
7973 | ? per_cu->v.quick->compunit_symtab |
7974 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
7975 | } |
7976 | ||
7977 | /* A helper function for computing the list of all symbol tables | |
7978 | included by PER_CU. */ | |
7979 | ||
7980 | static void | |
43f3e411 | 7981 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 7982 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 7983 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 7984 | struct compunit_symtab *immediate_parent) |
95554aad TT |
7985 | { |
7986 | void **slot; | |
7987 | int ix; | |
43f3e411 | 7988 | struct compunit_symtab *cust; |
95554aad TT |
7989 | struct dwarf2_per_cu_data *iter; |
7990 | ||
7991 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
7992 | if (*slot != NULL) | |
7993 | { | |
7994 | /* This inclusion and its children have been processed. */ | |
7995 | return; | |
7996 | } | |
7997 | ||
7998 | *slot = per_cu; | |
7999 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
8000 | cust = get_compunit_symtab (per_cu); |
8001 | if (cust != NULL) | |
ec94af83 DE |
8002 | { |
8003 | /* If this is a type unit only add its symbol table if we haven't | |
8004 | seen it yet (type unit per_cu's can share symtabs). */ | |
8005 | if (per_cu->is_debug_types) | |
8006 | { | |
43f3e411 | 8007 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
8008 | if (*slot == NULL) |
8009 | { | |
43f3e411 DE |
8010 | *slot = cust; |
8011 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
8012 | if (cust->user == NULL) | |
8013 | cust->user = immediate_parent; | |
ec94af83 DE |
8014 | } |
8015 | } | |
8016 | else | |
f9125b6c | 8017 | { |
43f3e411 DE |
8018 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
8019 | if (cust->user == NULL) | |
8020 | cust->user = immediate_parent; | |
f9125b6c | 8021 | } |
ec94af83 | 8022 | } |
95554aad TT |
8023 | |
8024 | for (ix = 0; | |
796a7ff8 | 8025 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 8026 | ++ix) |
ec94af83 DE |
8027 | { |
8028 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 8029 | all_type_symtabs, iter, cust); |
ec94af83 | 8030 | } |
95554aad TT |
8031 | } |
8032 | ||
43f3e411 | 8033 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
8034 | PER_CU. */ |
8035 | ||
8036 | static void | |
43f3e411 | 8037 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 8038 | { |
f4dc4d17 DE |
8039 | gdb_assert (! per_cu->is_debug_types); |
8040 | ||
796a7ff8 | 8041 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
8042 | { |
8043 | int ix, len; | |
ec94af83 | 8044 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
8045 | struct compunit_symtab *compunit_symtab_iter; |
8046 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 8047 | htab_t all_children, all_type_symtabs; |
43f3e411 | 8048 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
8049 | |
8050 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 8051 | if (cust == NULL) |
95554aad TT |
8052 | return; |
8053 | ||
8054 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
8055 | NULL, xcalloc, xfree); | |
ec94af83 DE |
8056 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
8057 | NULL, xcalloc, xfree); | |
95554aad TT |
8058 | |
8059 | for (ix = 0; | |
796a7ff8 | 8060 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 8061 | ix, per_cu_iter); |
95554aad | 8062 | ++ix) |
ec94af83 DE |
8063 | { |
8064 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 8065 | all_type_symtabs, per_cu_iter, |
43f3e411 | 8066 | cust); |
ec94af83 | 8067 | } |
95554aad | 8068 | |
ec94af83 | 8069 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
8070 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
8071 | cust->includes | |
8d749320 SM |
8072 | = XOBNEWVEC (&dwarf2_per_objfile->objfile->objfile_obstack, |
8073 | struct compunit_symtab *, len + 1); | |
95554aad | 8074 | for (ix = 0; |
43f3e411 DE |
8075 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
8076 | compunit_symtab_iter); | |
95554aad | 8077 | ++ix) |
43f3e411 DE |
8078 | cust->includes[ix] = compunit_symtab_iter; |
8079 | cust->includes[len] = NULL; | |
95554aad | 8080 | |
43f3e411 | 8081 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 8082 | htab_delete (all_children); |
ec94af83 | 8083 | htab_delete (all_type_symtabs); |
95554aad TT |
8084 | } |
8085 | } | |
8086 | ||
8087 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
8088 | read. */ | |
8089 | ||
8090 | static void | |
8091 | process_cu_includes (void) | |
8092 | { | |
8093 | int ix; | |
8094 | struct dwarf2_per_cu_data *iter; | |
8095 | ||
8096 | for (ix = 0; | |
8097 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
8098 | ix, iter); | |
8099 | ++ix) | |
f4dc4d17 DE |
8100 | { |
8101 | if (! iter->is_debug_types) | |
43f3e411 | 8102 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 8103 | } |
95554aad TT |
8104 | |
8105 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
8106 | } | |
8107 | ||
9cdd5dbd | 8108 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
8109 | already been loaded into memory. */ |
8110 | ||
8111 | static void | |
95554aad TT |
8112 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8113 | enum language pretend_language) | |
10b3939b | 8114 | { |
10b3939b | 8115 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 8116 | struct objfile *objfile = per_cu->objfile; |
3e29f34a | 8117 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 8118 | CORE_ADDR lowpc, highpc; |
43f3e411 | 8119 | struct compunit_symtab *cust; |
3da10d80 | 8120 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 8121 | CORE_ADDR baseaddr; |
4359dff1 | 8122 | struct block *static_block; |
3e29f34a | 8123 | CORE_ADDR addr; |
10b3939b DJ |
8124 | |
8125 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8126 | ||
10b3939b DJ |
8127 | buildsym_init (); |
8128 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 8129 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
8130 | |
8131 | cu->list_in_scope = &file_symbols; | |
c906108c | 8132 | |
95554aad TT |
8133 | cu->language = pretend_language; |
8134 | cu->language_defn = language_def (cu->language); | |
8135 | ||
c906108c | 8136 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 8137 | process_die (cu->dies, cu); |
c906108c | 8138 | |
a766d390 DE |
8139 | /* For now fudge the Go package. */ |
8140 | if (cu->language == language_go) | |
8141 | fixup_go_packaging (cu); | |
8142 | ||
3da10d80 KS |
8143 | /* Now that we have processed all the DIEs in the CU, all the types |
8144 | should be complete, and it should now be safe to compute all of the | |
8145 | physnames. */ | |
8146 | compute_delayed_physnames (cu); | |
8147 | do_cleanups (delayed_list_cleanup); | |
8148 | ||
fae299cd DC |
8149 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
8150 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
8151 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 8152 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 8153 | |
3e29f34a MR |
8154 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
8155 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
8156 | |
8157 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
8158 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
8159 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
8160 | addrmap to help ensure it has an accurate map of pc values belonging to | |
8161 | this comp unit. */ | |
8162 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
8163 | ||
43f3e411 DE |
8164 | cust = end_symtab_from_static_block (static_block, |
8165 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 8166 | |
43f3e411 | 8167 | if (cust != NULL) |
c906108c | 8168 | { |
df15bd07 | 8169 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 8170 | |
8be455d7 JK |
8171 | /* Set symtab language to language from DW_AT_language. If the |
8172 | compilation is from a C file generated by language preprocessors, do | |
8173 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 8174 | if (!(cu->language == language_c |
40e3ad0e | 8175 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 8176 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
8177 | |
8178 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
8179 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
8180 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
8181 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
8182 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
8183 | |
8184 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
8185 | needed, it would be wrong due to missing DW_AT_producer there. | |
8186 | ||
8187 | Still one can confuse GDB by using non-standard GCC compilation | |
8188 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
8189 | */ | |
ab260dad | 8190 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 8191 | cust->locations_valid = 1; |
e0d00bc7 JK |
8192 | |
8193 | if (gcc_4_minor >= 5) | |
43f3e411 | 8194 | cust->epilogue_unwind_valid = 1; |
96408a79 | 8195 | |
43f3e411 | 8196 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 8197 | } |
9291a0cd TT |
8198 | |
8199 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8200 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
8201 | else |
8202 | { | |
8203 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8204 | pst->compunit_symtab = cust; |
9291a0cd TT |
8205 | pst->readin = 1; |
8206 | } | |
c906108c | 8207 | |
95554aad TT |
8208 | /* Push it for inclusion processing later. */ |
8209 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
8210 | ||
c906108c | 8211 | do_cleanups (back_to); |
f4dc4d17 | 8212 | } |
45cfd468 | 8213 | |
f4dc4d17 DE |
8214 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
8215 | already been loaded into memory. */ | |
8216 | ||
8217 | static void | |
8218 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
8219 | enum language pretend_language) | |
8220 | { | |
8221 | struct dwarf2_cu *cu = per_cu->cu; | |
8222 | struct objfile *objfile = per_cu->objfile; | |
43f3e411 | 8223 | struct compunit_symtab *cust; |
f4dc4d17 | 8224 | struct cleanup *back_to, *delayed_list_cleanup; |
0186c6a7 DE |
8225 | struct signatured_type *sig_type; |
8226 | ||
8227 | gdb_assert (per_cu->is_debug_types); | |
8228 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8229 | |
8230 | buildsym_init (); | |
8231 | back_to = make_cleanup (really_free_pendings, NULL); | |
8232 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
8233 | ||
8234 | cu->list_in_scope = &file_symbols; | |
8235 | ||
8236 | cu->language = pretend_language; | |
8237 | cu->language_defn = language_def (cu->language); | |
8238 | ||
8239 | /* The symbol tables are set up in read_type_unit_scope. */ | |
8240 | process_die (cu->dies, cu); | |
8241 | ||
8242 | /* For now fudge the Go package. */ | |
8243 | if (cu->language == language_go) | |
8244 | fixup_go_packaging (cu); | |
8245 | ||
8246 | /* Now that we have processed all the DIEs in the CU, all the types | |
8247 | should be complete, and it should now be safe to compute all of the | |
8248 | physnames. */ | |
8249 | compute_delayed_physnames (cu); | |
8250 | do_cleanups (delayed_list_cleanup); | |
8251 | ||
8252 | /* TUs share symbol tables. | |
8253 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
8254 | of it with end_expandable_symtab. Otherwise, complete the addition of |
8255 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 8256 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 8257 | { |
43f3e411 DE |
8258 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
8259 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 8260 | |
43f3e411 | 8261 | if (cust != NULL) |
f4dc4d17 DE |
8262 | { |
8263 | /* Set symtab language to language from DW_AT_language. If the | |
8264 | compilation is from a C file generated by language preprocessors, | |
8265 | do not set the language if it was already deduced by | |
8266 | start_subfile. */ | |
43f3e411 DE |
8267 | if (!(cu->language == language_c |
8268 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
8269 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
8270 | } |
8271 | } | |
8272 | else | |
8273 | { | |
0ab9ce85 | 8274 | augment_type_symtab (); |
43f3e411 | 8275 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
8276 | } |
8277 | ||
8278 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8279 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
8280 | else |
8281 | { | |
8282 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8283 | pst->compunit_symtab = cust; |
f4dc4d17 | 8284 | pst->readin = 1; |
45cfd468 | 8285 | } |
f4dc4d17 DE |
8286 | |
8287 | do_cleanups (back_to); | |
c906108c SS |
8288 | } |
8289 | ||
95554aad TT |
8290 | /* Process an imported unit DIE. */ |
8291 | ||
8292 | static void | |
8293 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
8294 | { | |
8295 | struct attribute *attr; | |
8296 | ||
f4dc4d17 DE |
8297 | /* For now we don't handle imported units in type units. */ |
8298 | if (cu->per_cu->is_debug_types) | |
8299 | { | |
8300 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8301 | " supported in type units [in module %s]"), | |
4262abfb | 8302 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
8303 | } |
8304 | ||
95554aad TT |
8305 | attr = dwarf2_attr (die, DW_AT_import, cu); |
8306 | if (attr != NULL) | |
8307 | { | |
8308 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 8309 | sect_offset offset; |
36586728 | 8310 | int is_dwz; |
95554aad TT |
8311 | |
8312 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
8313 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
8314 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad | 8315 | |
69d751e3 | 8316 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
8317 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
8318 | load_full_comp_unit (per_cu, cu->language); | |
8319 | ||
796a7ff8 | 8320 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
8321 | per_cu); |
8322 | } | |
8323 | } | |
8324 | ||
adde2bff DE |
8325 | /* Reset the in_process bit of a die. */ |
8326 | ||
8327 | static void | |
8328 | reset_die_in_process (void *arg) | |
8329 | { | |
9a3c8263 | 8330 | struct die_info *die = (struct die_info *) arg; |
8c3cb9fa | 8331 | |
adde2bff DE |
8332 | die->in_process = 0; |
8333 | } | |
8334 | ||
c906108c SS |
8335 | /* Process a die and its children. */ |
8336 | ||
8337 | static void | |
e7c27a73 | 8338 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8339 | { |
adde2bff DE |
8340 | struct cleanup *in_process; |
8341 | ||
8342 | /* We should only be processing those not already in process. */ | |
8343 | gdb_assert (!die->in_process); | |
8344 | ||
8345 | die->in_process = 1; | |
8346 | in_process = make_cleanup (reset_die_in_process,die); | |
8347 | ||
c906108c SS |
8348 | switch (die->tag) |
8349 | { | |
8350 | case DW_TAG_padding: | |
8351 | break; | |
8352 | case DW_TAG_compile_unit: | |
95554aad | 8353 | case DW_TAG_partial_unit: |
e7c27a73 | 8354 | read_file_scope (die, cu); |
c906108c | 8355 | break; |
348e048f DE |
8356 | case DW_TAG_type_unit: |
8357 | read_type_unit_scope (die, cu); | |
8358 | break; | |
c906108c | 8359 | case DW_TAG_subprogram: |
c906108c | 8360 | case DW_TAG_inlined_subroutine: |
edb3359d | 8361 | read_func_scope (die, cu); |
c906108c SS |
8362 | break; |
8363 | case DW_TAG_lexical_block: | |
14898363 L |
8364 | case DW_TAG_try_block: |
8365 | case DW_TAG_catch_block: | |
e7c27a73 | 8366 | read_lexical_block_scope (die, cu); |
c906108c | 8367 | break; |
216f72a1 | 8368 | case DW_TAG_call_site: |
96408a79 SA |
8369 | case DW_TAG_GNU_call_site: |
8370 | read_call_site_scope (die, cu); | |
8371 | break; | |
c906108c | 8372 | case DW_TAG_class_type: |
680b30c7 | 8373 | case DW_TAG_interface_type: |
c906108c SS |
8374 | case DW_TAG_structure_type: |
8375 | case DW_TAG_union_type: | |
134d01f1 | 8376 | process_structure_scope (die, cu); |
c906108c SS |
8377 | break; |
8378 | case DW_TAG_enumeration_type: | |
134d01f1 | 8379 | process_enumeration_scope (die, cu); |
c906108c | 8380 | break; |
134d01f1 | 8381 | |
f792889a DJ |
8382 | /* These dies have a type, but processing them does not create |
8383 | a symbol or recurse to process the children. Therefore we can | |
8384 | read them on-demand through read_type_die. */ | |
c906108c | 8385 | case DW_TAG_subroutine_type: |
72019c9c | 8386 | case DW_TAG_set_type: |
c906108c | 8387 | case DW_TAG_array_type: |
c906108c | 8388 | case DW_TAG_pointer_type: |
c906108c | 8389 | case DW_TAG_ptr_to_member_type: |
c906108c | 8390 | case DW_TAG_reference_type: |
c906108c | 8391 | case DW_TAG_string_type: |
c906108c | 8392 | break; |
134d01f1 | 8393 | |
c906108c | 8394 | case DW_TAG_base_type: |
a02abb62 | 8395 | case DW_TAG_subrange_type: |
cb249c71 | 8396 | case DW_TAG_typedef: |
134d01f1 DJ |
8397 | /* Add a typedef symbol for the type definition, if it has a |
8398 | DW_AT_name. */ | |
f792889a | 8399 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 8400 | break; |
c906108c | 8401 | case DW_TAG_common_block: |
e7c27a73 | 8402 | read_common_block (die, cu); |
c906108c SS |
8403 | break; |
8404 | case DW_TAG_common_inclusion: | |
8405 | break; | |
d9fa45fe | 8406 | case DW_TAG_namespace: |
4d4ec4e5 | 8407 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 8408 | read_namespace (die, cu); |
d9fa45fe | 8409 | break; |
5d7cb8df | 8410 | case DW_TAG_module: |
4d4ec4e5 | 8411 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
8412 | read_module (die, cu); |
8413 | break; | |
d9fa45fe | 8414 | case DW_TAG_imported_declaration: |
74921315 KS |
8415 | cu->processing_has_namespace_info = 1; |
8416 | if (read_namespace_alias (die, cu)) | |
8417 | break; | |
8418 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 8419 | case DW_TAG_imported_module: |
4d4ec4e5 | 8420 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
8421 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
8422 | || cu->language != language_fortran)) | |
8423 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
8424 | dwarf_tag_name (die->tag)); | |
8425 | read_import_statement (die, cu); | |
d9fa45fe | 8426 | break; |
95554aad TT |
8427 | |
8428 | case DW_TAG_imported_unit: | |
8429 | process_imported_unit_die (die, cu); | |
8430 | break; | |
8431 | ||
c906108c | 8432 | default: |
e7c27a73 | 8433 | new_symbol (die, NULL, cu); |
c906108c SS |
8434 | break; |
8435 | } | |
adde2bff DE |
8436 | |
8437 | do_cleanups (in_process); | |
c906108c | 8438 | } |
ca69b9e6 DE |
8439 | \f |
8440 | /* DWARF name computation. */ | |
c906108c | 8441 | |
94af9270 KS |
8442 | /* A helper function for dwarf2_compute_name which determines whether DIE |
8443 | needs to have the name of the scope prepended to the name listed in the | |
8444 | die. */ | |
8445 | ||
8446 | static int | |
8447 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8448 | { | |
1c809c68 TT |
8449 | struct attribute *attr; |
8450 | ||
94af9270 KS |
8451 | switch (die->tag) |
8452 | { | |
8453 | case DW_TAG_namespace: | |
8454 | case DW_TAG_typedef: | |
8455 | case DW_TAG_class_type: | |
8456 | case DW_TAG_interface_type: | |
8457 | case DW_TAG_structure_type: | |
8458 | case DW_TAG_union_type: | |
8459 | case DW_TAG_enumeration_type: | |
8460 | case DW_TAG_enumerator: | |
8461 | case DW_TAG_subprogram: | |
08a76f8a | 8462 | case DW_TAG_inlined_subroutine: |
94af9270 | 8463 | case DW_TAG_member: |
74921315 | 8464 | case DW_TAG_imported_declaration: |
94af9270 KS |
8465 | return 1; |
8466 | ||
8467 | case DW_TAG_variable: | |
c2b0a229 | 8468 | case DW_TAG_constant: |
94af9270 KS |
8469 | /* We only need to prefix "globally" visible variables. These include |
8470 | any variable marked with DW_AT_external or any variable that | |
8471 | lives in a namespace. [Variables in anonymous namespaces | |
8472 | require prefixing, but they are not DW_AT_external.] */ | |
8473 | ||
8474 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
8475 | { | |
8476 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 8477 | |
94af9270 KS |
8478 | return die_needs_namespace (die_specification (die, &spec_cu), |
8479 | spec_cu); | |
8480 | } | |
8481 | ||
1c809c68 | 8482 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
8483 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
8484 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
8485 | return 0; |
8486 | /* A variable in a lexical block of some kind does not need a | |
8487 | namespace, even though in C++ such variables may be external | |
8488 | and have a mangled name. */ | |
8489 | if (die->parent->tag == DW_TAG_lexical_block | |
8490 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
8491 | || die->parent->tag == DW_TAG_catch_block |
8492 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
8493 | return 0; |
8494 | return 1; | |
94af9270 KS |
8495 | |
8496 | default: | |
8497 | return 0; | |
8498 | } | |
8499 | } | |
8500 | ||
8501 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, | |
a766d390 | 8502 | compute the physname for the object, which include a method's: |
9c37b5ae | 8503 | - formal parameters (C++), |
a766d390 | 8504 | - receiver type (Go), |
a766d390 DE |
8505 | |
8506 | The term "physname" is a bit confusing. | |
8507 | For C++, for example, it is the demangled name. | |
8508 | For Go, for example, it's the mangled name. | |
94af9270 | 8509 | |
af6b7be1 JB |
8510 | For Ada, return the DIE's linkage name rather than the fully qualified |
8511 | name. PHYSNAME is ignored.. | |
8512 | ||
94af9270 KS |
8513 | The result is allocated on the objfile_obstack and canonicalized. */ |
8514 | ||
8515 | static const char * | |
15d034d0 TT |
8516 | dwarf2_compute_name (const char *name, |
8517 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
8518 | int physname) |
8519 | { | |
bb5ed363 DE |
8520 | struct objfile *objfile = cu->objfile; |
8521 | ||
94af9270 KS |
8522 | if (name == NULL) |
8523 | name = dwarf2_name (die, cu); | |
8524 | ||
2ee7123e DE |
8525 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
8526 | but otherwise compute it by typename_concat inside GDB. | |
8527 | FIXME: Actually this is not really true, or at least not always true. | |
8528 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
8529 | Fortran names because there is no mangling standard. So new_symbol_full | |
8530 | will set the demangled name to the result of dwarf2_full_name, and it is | |
8531 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
8532 | if (cu->language == language_ada |
8533 | || (cu->language == language_fortran && physname)) | |
8534 | { | |
8535 | /* For Ada unit, we prefer the linkage name over the name, as | |
8536 | the former contains the exported name, which the user expects | |
8537 | to be able to reference. Ideally, we want the user to be able | |
8538 | to reference this entity using either natural or linkage name, | |
8539 | but we haven't started looking at this enhancement yet. */ | |
2ee7123e | 8540 | const char *linkage_name; |
f55ee35c | 8541 | |
2ee7123e DE |
8542 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); |
8543 | if (linkage_name == NULL) | |
8544 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8545 | if (linkage_name != NULL) | |
8546 | return linkage_name; | |
f55ee35c JK |
8547 | } |
8548 | ||
94af9270 KS |
8549 | /* These are the only languages we know how to qualify names in. */ |
8550 | if (name != NULL | |
9c37b5ae | 8551 | && (cu->language == language_cplus |
c44af4eb TT |
8552 | || cu->language == language_fortran || cu->language == language_d |
8553 | || cu->language == language_rust)) | |
94af9270 KS |
8554 | { |
8555 | if (die_needs_namespace (die, cu)) | |
8556 | { | |
8557 | long length; | |
0d5cff50 | 8558 | const char *prefix; |
34a68019 | 8559 | const char *canonical_name = NULL; |
94af9270 | 8560 | |
d7e74731 PA |
8561 | string_file buf; |
8562 | ||
94af9270 | 8563 | prefix = determine_prefix (die, cu); |
94af9270 KS |
8564 | if (*prefix != '\0') |
8565 | { | |
f55ee35c JK |
8566 | char *prefixed_name = typename_concat (NULL, prefix, name, |
8567 | physname, cu); | |
9a619af0 | 8568 | |
d7e74731 | 8569 | buf.puts (prefixed_name); |
94af9270 KS |
8570 | xfree (prefixed_name); |
8571 | } | |
8572 | else | |
d7e74731 | 8573 | buf.puts (name); |
94af9270 | 8574 | |
98bfdba5 PA |
8575 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
8576 | as children with DW_TAG_template_type_param or | |
8577 | DW_TAG_value_type_param. If the latter, add them to the name | |
8578 | here. If the name already has template parameters, then | |
8579 | skip this step; some versions of GCC emit both, and | |
8580 | it is more efficient to use the pre-computed name. | |
8581 | ||
8582 | Something to keep in mind about this process: it is very | |
8583 | unlikely, or in some cases downright impossible, to produce | |
8584 | something that will match the mangled name of a function. | |
8585 | If the definition of the function has the same debug info, | |
8586 | we should be able to match up with it anyway. But fallbacks | |
8587 | using the minimal symbol, for instance to find a method | |
8588 | implemented in a stripped copy of libstdc++, will not work. | |
8589 | If we do not have debug info for the definition, we will have to | |
8590 | match them up some other way. | |
8591 | ||
8592 | When we do name matching there is a related problem with function | |
8593 | templates; two instantiated function templates are allowed to | |
8594 | differ only by their return types, which we do not add here. */ | |
8595 | ||
8596 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
8597 | { | |
8598 | struct attribute *attr; | |
8599 | struct die_info *child; | |
8600 | int first = 1; | |
8601 | ||
8602 | die->building_fullname = 1; | |
8603 | ||
8604 | for (child = die->child; child != NULL; child = child->sibling) | |
8605 | { | |
8606 | struct type *type; | |
12df843f | 8607 | LONGEST value; |
d521ce57 | 8608 | const gdb_byte *bytes; |
98bfdba5 PA |
8609 | struct dwarf2_locexpr_baton *baton; |
8610 | struct value *v; | |
8611 | ||
8612 | if (child->tag != DW_TAG_template_type_param | |
8613 | && child->tag != DW_TAG_template_value_param) | |
8614 | continue; | |
8615 | ||
8616 | if (first) | |
8617 | { | |
d7e74731 | 8618 | buf.puts ("<"); |
98bfdba5 PA |
8619 | first = 0; |
8620 | } | |
8621 | else | |
d7e74731 | 8622 | buf.puts (", "); |
98bfdba5 PA |
8623 | |
8624 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
8625 | if (attr == NULL) | |
8626 | { | |
8627 | complaint (&symfile_complaints, | |
8628 | _("template parameter missing DW_AT_type")); | |
d7e74731 | 8629 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
8630 | continue; |
8631 | } | |
8632 | type = die_type (child, cu); | |
8633 | ||
8634 | if (child->tag == DW_TAG_template_type_param) | |
8635 | { | |
d7e74731 | 8636 | c_print_type (type, "", &buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
8637 | continue; |
8638 | } | |
8639 | ||
8640 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
8641 | if (attr == NULL) | |
8642 | { | |
8643 | complaint (&symfile_complaints, | |
3e43a32a MS |
8644 | _("template parameter missing " |
8645 | "DW_AT_const_value")); | |
d7e74731 | 8646 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
8647 | continue; |
8648 | } | |
8649 | ||
8650 | dwarf2_const_value_attr (attr, type, name, | |
8651 | &cu->comp_unit_obstack, cu, | |
8652 | &value, &bytes, &baton); | |
8653 | ||
8654 | if (TYPE_NOSIGN (type)) | |
8655 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
8656 | changed, this can use value_print instead. */ | |
d7e74731 | 8657 | c_printchar (value, type, &buf); |
98bfdba5 PA |
8658 | else |
8659 | { | |
8660 | struct value_print_options opts; | |
8661 | ||
8662 | if (baton != NULL) | |
8663 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
8664 | baton->data, | |
8665 | baton->size, | |
8666 | baton->per_cu); | |
8667 | else if (bytes != NULL) | |
8668 | { | |
8669 | v = allocate_value (type); | |
8670 | memcpy (value_contents_writeable (v), bytes, | |
8671 | TYPE_LENGTH (type)); | |
8672 | } | |
8673 | else | |
8674 | v = value_from_longest (type, value); | |
8675 | ||
3e43a32a MS |
8676 | /* Specify decimal so that we do not depend on |
8677 | the radix. */ | |
98bfdba5 PA |
8678 | get_formatted_print_options (&opts, 'd'); |
8679 | opts.raw = 1; | |
d7e74731 | 8680 | value_print (v, &buf, &opts); |
98bfdba5 PA |
8681 | release_value (v); |
8682 | value_free (v); | |
8683 | } | |
8684 | } | |
8685 | ||
8686 | die->building_fullname = 0; | |
8687 | ||
8688 | if (!first) | |
8689 | { | |
8690 | /* Close the argument list, with a space if necessary | |
8691 | (nested templates). */ | |
d7e74731 PA |
8692 | if (!buf.empty () && buf.string ().back () == '>') |
8693 | buf.puts (" >"); | |
98bfdba5 | 8694 | else |
d7e74731 | 8695 | buf.puts (">"); |
98bfdba5 PA |
8696 | } |
8697 | } | |
8698 | ||
9c37b5ae | 8699 | /* For C++ methods, append formal parameter type |
94af9270 | 8700 | information, if PHYSNAME. */ |
6e70227d | 8701 | |
94af9270 | 8702 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 8703 | && cu->language == language_cplus) |
94af9270 KS |
8704 | { |
8705 | struct type *type = read_type_die (die, cu); | |
8706 | ||
d7e74731 | 8707 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 8708 | &type_print_raw_options); |
94af9270 | 8709 | |
9c37b5ae | 8710 | if (cu->language == language_cplus) |
94af9270 | 8711 | { |
60430eff DJ |
8712 | /* Assume that an artificial first parameter is |
8713 | "this", but do not crash if it is not. RealView | |
8714 | marks unnamed (and thus unused) parameters as | |
8715 | artificial; there is no way to differentiate | |
8716 | the two cases. */ | |
94af9270 KS |
8717 | if (TYPE_NFIELDS (type) > 0 |
8718 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 8719 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
8720 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
8721 | 0)))) | |
d7e74731 | 8722 | buf.puts (" const"); |
94af9270 KS |
8723 | } |
8724 | } | |
8725 | ||
d7e74731 | 8726 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
8727 | |
8728 | if (cu->language == language_cplus) | |
34a68019 | 8729 | canonical_name |
322a8516 | 8730 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
8731 | &objfile->per_bfd->storage_obstack); |
8732 | ||
8733 | /* If we only computed INTERMEDIATE_NAME, or if | |
8734 | INTERMEDIATE_NAME is already canonical, then we need to | |
8735 | copy it to the appropriate obstack. */ | |
322a8516 | 8736 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
8737 | name = ((const char *) |
8738 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
8739 | intermediate_name.c_str (), |
8740 | intermediate_name.length ())); | |
34a68019 TT |
8741 | else |
8742 | name = canonical_name; | |
94af9270 KS |
8743 | } |
8744 | } | |
8745 | ||
8746 | return name; | |
8747 | } | |
8748 | ||
0114d602 DJ |
8749 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
8750 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 8751 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
8752 | not have a name. NAME may either be from a previous call to |
8753 | dwarf2_name or NULL. | |
8754 | ||
9c37b5ae | 8755 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
8756 | |
8757 | static const char * | |
15d034d0 | 8758 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 8759 | { |
94af9270 KS |
8760 | return dwarf2_compute_name (name, die, cu, 0); |
8761 | } | |
0114d602 | 8762 | |
94af9270 KS |
8763 | /* Construct a physname for the given DIE in CU. NAME may either be |
8764 | from a previous call to dwarf2_name or NULL. The result will be | |
8765 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
8766 | name. | |
0114d602 | 8767 | |
9c37b5ae | 8768 | The output string will be canonicalized (if C++). */ |
0114d602 | 8769 | |
94af9270 | 8770 | static const char * |
15d034d0 | 8771 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 8772 | { |
bb5ed363 | 8773 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
8774 | const char *retval, *mangled = NULL, *canon = NULL; |
8775 | struct cleanup *back_to; | |
8776 | int need_copy = 1; | |
8777 | ||
8778 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
8779 | on its own. */ | |
8780 | if (!die_needs_namespace (die, cu)) | |
8781 | return dwarf2_compute_name (name, die, cu, 1); | |
8782 | ||
8783 | back_to = make_cleanup (null_cleanup, NULL); | |
8784 | ||
7d45c7c3 KB |
8785 | mangled = dwarf2_string_attr (die, DW_AT_linkage_name, cu); |
8786 | if (mangled == NULL) | |
8787 | mangled = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
900e11f9 | 8788 | |
e98c9e7c TT |
8789 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
8790 | See https://github.com/rust-lang/rust/issues/32925. */ | |
8791 | if (cu->language == language_rust && mangled != NULL | |
8792 | && strchr (mangled, '{') != NULL) | |
8793 | mangled = NULL; | |
8794 | ||
900e11f9 JK |
8795 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
8796 | has computed. */ | |
7d45c7c3 | 8797 | if (mangled != NULL) |
900e11f9 JK |
8798 | { |
8799 | char *demangled; | |
8800 | ||
900e11f9 JK |
8801 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return |
8802 | type. It is easier for GDB users to search for such functions as | |
8803 | `name(params)' than `long name(params)'. In such case the minimal | |
8804 | symbol names do not match the full symbol names but for template | |
8805 | functions there is never a need to look up their definition from their | |
8806 | declaration so the only disadvantage remains the minimal symbol | |
8807 | variant `long name(params)' does not have the proper inferior type. | |
8808 | */ | |
8809 | ||
a766d390 DE |
8810 | if (cu->language == language_go) |
8811 | { | |
8812 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
8813 | new_symbol_full assumes we return the mangled name. | |
8814 | This just undoes that lie until things are cleaned up. */ | |
8815 | demangled = NULL; | |
8816 | } | |
8817 | else | |
8818 | { | |
8de20a37 | 8819 | demangled = gdb_demangle (mangled, |
9c37b5ae | 8820 | (DMGL_PARAMS | DMGL_ANSI | DMGL_RET_DROP)); |
a766d390 | 8821 | } |
900e11f9 JK |
8822 | if (demangled) |
8823 | { | |
8824 | make_cleanup (xfree, demangled); | |
8825 | canon = demangled; | |
8826 | } | |
8827 | else | |
8828 | { | |
8829 | canon = mangled; | |
8830 | need_copy = 0; | |
8831 | } | |
8832 | } | |
8833 | ||
8834 | if (canon == NULL || check_physname) | |
8835 | { | |
8836 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
8837 | ||
8838 | if (canon != NULL && strcmp (physname, canon) != 0) | |
8839 | { | |
8840 | /* It may not mean a bug in GDB. The compiler could also | |
8841 | compute DW_AT_linkage_name incorrectly. But in such case | |
8842 | GDB would need to be bug-to-bug compatible. */ | |
8843 | ||
8844 | complaint (&symfile_complaints, | |
8845 | _("Computed physname <%s> does not match demangled <%s> " | |
8846 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
4262abfb JK |
8847 | physname, canon, mangled, die->offset.sect_off, |
8848 | objfile_name (objfile)); | |
900e11f9 JK |
8849 | |
8850 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
8851 | is available here - over computed PHYSNAME. It is safer | |
8852 | against both buggy GDB and buggy compilers. */ | |
8853 | ||
8854 | retval = canon; | |
8855 | } | |
8856 | else | |
8857 | { | |
8858 | retval = physname; | |
8859 | need_copy = 0; | |
8860 | } | |
8861 | } | |
8862 | else | |
8863 | retval = canon; | |
8864 | ||
8865 | if (need_copy) | |
224c3ddb SM |
8866 | retval = ((const char *) |
8867 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
8868 | retval, strlen (retval))); | |
900e11f9 JK |
8869 | |
8870 | do_cleanups (back_to); | |
8871 | return retval; | |
0114d602 DJ |
8872 | } |
8873 | ||
74921315 KS |
8874 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
8875 | a new symbol for it. | |
8876 | ||
8877 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
8878 | ||
8879 | static int | |
8880 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
8881 | { | |
8882 | struct attribute *attr; | |
8883 | ||
8884 | /* If the die does not have a name, this is not a namespace | |
8885 | alias. */ | |
8886 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8887 | if (attr != NULL) | |
8888 | { | |
8889 | int num; | |
8890 | struct die_info *d = die; | |
8891 | struct dwarf2_cu *imported_cu = cu; | |
8892 | ||
8893 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
8894 | keep inspecting DIEs until we hit the underlying import. */ | |
8895 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
8896 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
8897 | { | |
8898 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
8899 | if (attr == NULL) | |
8900 | break; | |
8901 | ||
8902 | d = follow_die_ref (d, attr, &imported_cu); | |
8903 | if (d->tag != DW_TAG_imported_declaration) | |
8904 | break; | |
8905 | } | |
8906 | ||
8907 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
8908 | { | |
8909 | complaint (&symfile_complaints, | |
8910 | _("DIE at 0x%x has too many recursively imported " | |
8911 | "declarations"), d->offset.sect_off); | |
8912 | return 0; | |
8913 | } | |
8914 | ||
8915 | if (attr != NULL) | |
8916 | { | |
8917 | struct type *type; | |
8918 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
8919 | ||
8920 | type = get_die_type_at_offset (offset, cu->per_cu); | |
8921 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
8922 | { | |
8923 | /* This declaration is a global namespace alias. Add | |
8924 | a symbol for it whose type is the aliased namespace. */ | |
8925 | new_symbol (die, type, cu); | |
8926 | return 1; | |
8927 | } | |
8928 | } | |
8929 | } | |
8930 | ||
8931 | return 0; | |
8932 | } | |
8933 | ||
22cee43f PMR |
8934 | /* Return the using directives repository (global or local?) to use in the |
8935 | current context for LANGUAGE. | |
8936 | ||
8937 | For Ada, imported declarations can materialize renamings, which *may* be | |
8938 | global. However it is impossible (for now?) in DWARF to distinguish | |
8939 | "external" imported declarations and "static" ones. As all imported | |
8940 | declarations seem to be static in all other languages, make them all CU-wide | |
8941 | global only in Ada. */ | |
8942 | ||
8943 | static struct using_direct ** | |
8944 | using_directives (enum language language) | |
8945 | { | |
8946 | if (language == language_ada && context_stack_depth == 0) | |
8947 | return &global_using_directives; | |
8948 | else | |
8949 | return &local_using_directives; | |
8950 | } | |
8951 | ||
27aa8d6a SW |
8952 | /* Read the import statement specified by the given die and record it. */ |
8953 | ||
8954 | static void | |
8955 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
8956 | { | |
bb5ed363 | 8957 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 8958 | struct attribute *import_attr; |
32019081 | 8959 | struct die_info *imported_die, *child_die; |
de4affc9 | 8960 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 8961 | const char *imported_name; |
794684b6 | 8962 | const char *imported_name_prefix; |
13387711 SW |
8963 | const char *canonical_name; |
8964 | const char *import_alias; | |
8965 | const char *imported_declaration = NULL; | |
794684b6 | 8966 | const char *import_prefix; |
32019081 JK |
8967 | VEC (const_char_ptr) *excludes = NULL; |
8968 | struct cleanup *cleanups; | |
13387711 | 8969 | |
27aa8d6a SW |
8970 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
8971 | if (import_attr == NULL) | |
8972 | { | |
8973 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8974 | dwarf_tag_name (die->tag)); | |
8975 | return; | |
8976 | } | |
8977 | ||
de4affc9 CC |
8978 | imported_cu = cu; |
8979 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
8980 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
8981 | if (imported_name == NULL) |
8982 | { | |
8983 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
8984 | ||
8985 | The import in the following code: | |
8986 | namespace A | |
8987 | { | |
8988 | typedef int B; | |
8989 | } | |
8990 | ||
8991 | int main () | |
8992 | { | |
8993 | using A::B; | |
8994 | B b; | |
8995 | return b; | |
8996 | } | |
8997 | ||
8998 | ... | |
8999 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
9000 | <52> DW_AT_decl_file : 1 | |
9001 | <53> DW_AT_decl_line : 6 | |
9002 | <54> DW_AT_import : <0x75> | |
9003 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
9004 | <59> DW_AT_name : B | |
9005 | <5b> DW_AT_decl_file : 1 | |
9006 | <5c> DW_AT_decl_line : 2 | |
9007 | <5d> DW_AT_type : <0x6e> | |
9008 | ... | |
9009 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
9010 | <76> DW_AT_byte_size : 4 | |
9011 | <77> DW_AT_encoding : 5 (signed) | |
9012 | ||
9013 | imports the wrong die ( 0x75 instead of 0x58 ). | |
9014 | This case will be ignored until the gcc bug is fixed. */ | |
9015 | return; | |
9016 | } | |
9017 | ||
82856980 SW |
9018 | /* Figure out the local name after import. */ |
9019 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 9020 | |
794684b6 SW |
9021 | /* Figure out where the statement is being imported to. */ |
9022 | import_prefix = determine_prefix (die, cu); | |
9023 | ||
9024 | /* Figure out what the scope of the imported die is and prepend it | |
9025 | to the name of the imported die. */ | |
de4affc9 | 9026 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 9027 | |
f55ee35c JK |
9028 | if (imported_die->tag != DW_TAG_namespace |
9029 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 9030 | { |
13387711 SW |
9031 | imported_declaration = imported_name; |
9032 | canonical_name = imported_name_prefix; | |
794684b6 | 9033 | } |
13387711 | 9034 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 9035 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
9036 | imported_name_prefix, |
9037 | (cu->language == language_d ? "." : "::"), | |
9038 | imported_name, (char *) NULL); | |
13387711 SW |
9039 | else |
9040 | canonical_name = imported_name; | |
794684b6 | 9041 | |
32019081 JK |
9042 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
9043 | ||
9044 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
9045 | for (child_die = die->child; child_die && child_die->tag; | |
9046 | child_die = sibling_die (child_die)) | |
9047 | { | |
9048 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
9049 | represented by an imported module entry with an import attribute | |
9050 | referring to the module and owned entries corresponding to those | |
9051 | entities that are renamed as part of being imported. */ | |
9052 | ||
9053 | if (child_die->tag != DW_TAG_imported_declaration) | |
9054 | { | |
9055 | complaint (&symfile_complaints, | |
9056 | _("child DW_TAG_imported_declaration expected " | |
9057 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 9058 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
9059 | continue; |
9060 | } | |
9061 | ||
9062 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
9063 | if (import_attr == NULL) | |
9064 | { | |
9065 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
9066 | dwarf_tag_name (child_die->tag)); | |
9067 | continue; | |
9068 | } | |
9069 | ||
9070 | imported_cu = cu; | |
9071 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
9072 | &imported_cu); | |
9073 | imported_name = dwarf2_name (imported_die, imported_cu); | |
9074 | if (imported_name == NULL) | |
9075 | { | |
9076 | complaint (&symfile_complaints, | |
9077 | _("child DW_TAG_imported_declaration has unknown " | |
9078 | "imported name - DIE at 0x%x [in module %s]"), | |
4262abfb | 9079 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
9080 | continue; |
9081 | } | |
9082 | ||
9083 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
9084 | ||
9085 | process_die (child_die, cu); | |
9086 | } | |
9087 | ||
22cee43f PMR |
9088 | add_using_directive (using_directives (cu->language), |
9089 | import_prefix, | |
9090 | canonical_name, | |
9091 | import_alias, | |
9092 | imported_declaration, | |
9093 | excludes, | |
9094 | 0, | |
9095 | &objfile->objfile_obstack); | |
32019081 JK |
9096 | |
9097 | do_cleanups (cleanups); | |
27aa8d6a SW |
9098 | } |
9099 | ||
f4dc4d17 | 9100 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 9101 | |
cb1df416 DJ |
9102 | static void |
9103 | free_cu_line_header (void *arg) | |
9104 | { | |
9a3c8263 | 9105 | struct dwarf2_cu *cu = (struct dwarf2_cu *) arg; |
cb1df416 DJ |
9106 | |
9107 | free_line_header (cu->line_header); | |
9108 | cu->line_header = NULL; | |
9109 | } | |
9110 | ||
1b80a9fa JK |
9111 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
9112 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
9113 | this, it was first present in GCC release 4.3.0. */ | |
9114 | ||
9115 | static int | |
9116 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
9117 | { | |
9118 | if (!cu->checked_producer) | |
9119 | check_producer (cu); | |
9120 | ||
9121 | return cu->producer_is_gcc_lt_4_3; | |
9122 | } | |
9123 | ||
9291a0cd TT |
9124 | static void |
9125 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 9126 | const char **name, const char **comp_dir) |
9291a0cd | 9127 | { |
9291a0cd TT |
9128 | /* Find the filename. Do not use dwarf2_name here, since the filename |
9129 | is not a source language identifier. */ | |
7d45c7c3 KB |
9130 | *name = dwarf2_string_attr (die, DW_AT_name, cu); |
9131 | *comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 9132 | |
7d45c7c3 KB |
9133 | if (*comp_dir == NULL |
9134 | && producer_is_gcc_lt_4_3 (cu) && *name != NULL | |
9135 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 9136 | { |
15d034d0 TT |
9137 | char *d = ldirname (*name); |
9138 | ||
9139 | *comp_dir = d; | |
9140 | if (d != NULL) | |
9141 | make_cleanup (xfree, d); | |
9291a0cd TT |
9142 | } |
9143 | if (*comp_dir != NULL) | |
9144 | { | |
9145 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
9146 | directory, get rid of it. */ | |
e6a959d6 | 9147 | const char *cp = strchr (*comp_dir, ':'); |
9291a0cd TT |
9148 | |
9149 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
9150 | *comp_dir = cp + 1; | |
9151 | } | |
9152 | ||
9153 | if (*name == NULL) | |
9154 | *name = "<unknown>"; | |
9155 | } | |
9156 | ||
f4dc4d17 DE |
9157 | /* Handle DW_AT_stmt_list for a compilation unit. |
9158 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
9159 | COMP_DIR is the compilation directory. LOWPC is passed to |
9160 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
9161 | |
9162 | static void | |
9163 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 9164 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 9165 | { |
527f3840 | 9166 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 9167 | struct attribute *attr; |
527f3840 JK |
9168 | unsigned int line_offset; |
9169 | struct line_header line_header_local; | |
9170 | hashval_t line_header_local_hash; | |
9171 | unsigned u; | |
9172 | void **slot; | |
9173 | int decode_mapping; | |
2ab95328 | 9174 | |
f4dc4d17 DE |
9175 | gdb_assert (! cu->per_cu->is_debug_types); |
9176 | ||
2ab95328 | 9177 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
9178 | if (attr == NULL) |
9179 | return; | |
9180 | ||
9181 | line_offset = DW_UNSND (attr); | |
9182 | ||
9183 | /* The line header hash table is only created if needed (it exists to | |
9184 | prevent redundant reading of the line table for partial_units). | |
9185 | If we're given a partial_unit, we'll need it. If we're given a | |
9186 | compile_unit, then use the line header hash table if it's already | |
9187 | created, but don't create one just yet. */ | |
9188 | ||
9189 | if (dwarf2_per_objfile->line_header_hash == NULL | |
9190 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 9191 | { |
527f3840 JK |
9192 | dwarf2_per_objfile->line_header_hash |
9193 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
9194 | line_header_eq_voidp, | |
9195 | free_line_header_voidp, | |
9196 | &objfile->objfile_obstack, | |
9197 | hashtab_obstack_allocate, | |
9198 | dummy_obstack_deallocate); | |
9199 | } | |
2ab95328 | 9200 | |
527f3840 JK |
9201 | line_header_local.offset.sect_off = line_offset; |
9202 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; | |
9203 | line_header_local_hash = line_header_hash (&line_header_local); | |
9204 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
9205 | { | |
9206 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9207 | &line_header_local, | |
9208 | line_header_local_hash, NO_INSERT); | |
9209 | ||
9210 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
9211 | is not present in *SLOT (since if there is something in *SLOT then | |
9212 | it will be for a partial_unit). */ | |
9213 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 9214 | { |
527f3840 | 9215 | gdb_assert (*slot != NULL); |
9a3c8263 | 9216 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 9217 | return; |
dee91e82 | 9218 | } |
2ab95328 | 9219 | } |
527f3840 JK |
9220 | |
9221 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
9222 | We always have to call also dwarf_decode_lines for it. */ | |
9223 | cu->line_header = dwarf_decode_line_header (line_offset, cu); | |
9224 | if (cu->line_header == NULL) | |
9225 | return; | |
9226 | ||
9227 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
9228 | slot = NULL; | |
9229 | else | |
9230 | { | |
9231 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9232 | &line_header_local, | |
9233 | line_header_local_hash, INSERT); | |
9234 | gdb_assert (slot != NULL); | |
9235 | } | |
9236 | if (slot != NULL && *slot == NULL) | |
9237 | { | |
9238 | /* This newly decoded line number information unit will be owned | |
9239 | by line_header_hash hash table. */ | |
9240 | *slot = cu->line_header; | |
9241 | } | |
9242 | else | |
9243 | { | |
9244 | /* We cannot free any current entry in (*slot) as that struct line_header | |
9245 | may be already used by multiple CUs. Create only temporary decoded | |
9246 | line_header for this CU - it may happen at most once for each line | |
9247 | number information unit. And if we're not using line_header_hash | |
9248 | then this is what we want as well. */ | |
9249 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
9250 | make_cleanup (free_cu_line_header, cu); | |
9251 | } | |
9252 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
9253 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
9254 | decode_mapping); | |
2ab95328 TT |
9255 | } |
9256 | ||
95554aad | 9257 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 9258 | |
c906108c | 9259 | static void |
e7c27a73 | 9260 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9261 | { |
dee91e82 | 9262 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 9263 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
debd256d | 9264 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 9265 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
9266 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
9267 | struct attribute *attr; | |
15d034d0 TT |
9268 | const char *name = NULL; |
9269 | const char *comp_dir = NULL; | |
c906108c | 9270 | struct die_info *child_die; |
e142c38c | 9271 | CORE_ADDR baseaddr; |
6e70227d | 9272 | |
e142c38c | 9273 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 9274 | |
fae299cd | 9275 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
9276 | |
9277 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
9278 | from finish_block. */ | |
2acceee2 | 9279 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 9280 | lowpc = highpc; |
3e29f34a | 9281 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 9282 | |
9291a0cd | 9283 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 9284 | |
95554aad | 9285 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 9286 | |
f4b8a18d KW |
9287 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
9288 | standardised yet. As a workaround for the language detection we fall | |
9289 | back to the DW_AT_producer string. */ | |
9290 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
9291 | cu->language = language_opencl; | |
9292 | ||
3019eac3 DE |
9293 | /* Similar hack for Go. */ |
9294 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
9295 | set_cu_language (DW_LANG_Go, cu); | |
9296 | ||
f4dc4d17 | 9297 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
9298 | |
9299 | /* Decode line number information if present. We do this before | |
9300 | processing child DIEs, so that the line header table is available | |
9301 | for DW_AT_decl_file. */ | |
c3b7b696 | 9302 | handle_DW_AT_stmt_list (die, cu, comp_dir, lowpc); |
3019eac3 DE |
9303 | |
9304 | /* Process all dies in compilation unit. */ | |
9305 | if (die->child != NULL) | |
9306 | { | |
9307 | child_die = die->child; | |
9308 | while (child_die && child_die->tag) | |
9309 | { | |
9310 | process_die (child_die, cu); | |
9311 | child_die = sibling_die (child_die); | |
9312 | } | |
9313 | } | |
9314 | ||
9315 | /* Decode macro information, if present. Dwarf 2 macro information | |
9316 | refers to information in the line number info statement program | |
9317 | header, so we can only read it if we've read the header | |
9318 | successfully. */ | |
0af92d60 JK |
9319 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
9320 | if (attr == NULL) | |
9321 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
9322 | if (attr && cu->line_header) |
9323 | { | |
9324 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
9325 | complaint (&symfile_complaints, | |
0af92d60 | 9326 | _("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 9327 | |
43f3e411 | 9328 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
9329 | } |
9330 | else | |
9331 | { | |
9332 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
9333 | if (attr && cu->line_header) | |
9334 | { | |
9335 | unsigned int macro_offset = DW_UNSND (attr); | |
9336 | ||
43f3e411 | 9337 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
9338 | } |
9339 | } | |
9340 | ||
9341 | do_cleanups (back_to); | |
9342 | } | |
9343 | ||
f4dc4d17 DE |
9344 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
9345 | Create the set of symtabs used by this TU, or if this TU is sharing | |
9346 | symtabs with another TU and the symtabs have already been created | |
9347 | then restore those symtabs in the line header. | |
9348 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
9349 | |
9350 | static void | |
f4dc4d17 | 9351 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 9352 | { |
f4dc4d17 DE |
9353 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
9354 | struct type_unit_group *tu_group; | |
9355 | int first_time; | |
9356 | struct line_header *lh; | |
3019eac3 | 9357 | struct attribute *attr; |
f4dc4d17 | 9358 | unsigned int i, line_offset; |
0186c6a7 | 9359 | struct signatured_type *sig_type; |
3019eac3 | 9360 | |
f4dc4d17 | 9361 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 9362 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 9363 | |
f4dc4d17 | 9364 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 9365 | |
f4dc4d17 | 9366 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 9367 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
9368 | if (sig_type->type_unit_group == NULL) |
9369 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
9370 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
9371 | |
9372 | /* If we've already processed this stmt_list there's no real need to | |
9373 | do it again, we could fake it and just recreate the part we need | |
9374 | (file name,index -> symtab mapping). If data shows this optimization | |
9375 | is useful we can do it then. */ | |
43f3e411 | 9376 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
9377 | |
9378 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
9379 | debug info. */ | |
9380 | lh = NULL; | |
9381 | if (attr != NULL) | |
3019eac3 | 9382 | { |
f4dc4d17 DE |
9383 | line_offset = DW_UNSND (attr); |
9384 | lh = dwarf_decode_line_header (line_offset, cu); | |
9385 | } | |
9386 | if (lh == NULL) | |
9387 | { | |
9388 | if (first_time) | |
9389 | dwarf2_start_symtab (cu, "", NULL, 0); | |
9390 | else | |
9391 | { | |
9392 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 9393 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 9394 | } |
f4dc4d17 | 9395 | return; |
3019eac3 DE |
9396 | } |
9397 | ||
f4dc4d17 DE |
9398 | cu->line_header = lh; |
9399 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 9400 | |
f4dc4d17 DE |
9401 | if (first_time) |
9402 | { | |
43f3e411 | 9403 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 9404 | |
1fd60fc0 DE |
9405 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
9406 | still initializing it, and our caller (a few levels up) | |
9407 | process_full_type_unit still needs to know if this is the first | |
9408 | time. */ | |
9409 | ||
f4dc4d17 DE |
9410 | tu_group->num_symtabs = lh->num_file_names; |
9411 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 9412 | |
f4dc4d17 DE |
9413 | for (i = 0; i < lh->num_file_names; ++i) |
9414 | { | |
d521ce57 | 9415 | const char *dir = NULL; |
f4dc4d17 | 9416 | struct file_entry *fe = &lh->file_names[i]; |
3019eac3 | 9417 | |
afa6c9ab | 9418 | if (fe->dir_index && lh->include_dirs != NULL) |
f4dc4d17 | 9419 | dir = lh->include_dirs[fe->dir_index - 1]; |
4d663531 | 9420 | dwarf2_start_subfile (fe->name, dir); |
3019eac3 | 9421 | |
f4dc4d17 DE |
9422 | if (current_subfile->symtab == NULL) |
9423 | { | |
9424 | /* NOTE: start_subfile will recognize when it's been passed | |
9425 | a file it has already seen. So we can't assume there's a | |
43f3e411 | 9426 | simple mapping from lh->file_names to subfiles, plus |
f4dc4d17 | 9427 | lh->file_names may contain dups. */ |
43f3e411 DE |
9428 | current_subfile->symtab |
9429 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
9430 | } |
9431 | ||
9432 | fe->symtab = current_subfile->symtab; | |
9433 | tu_group->symtabs[i] = fe->symtab; | |
9434 | } | |
9435 | } | |
9436 | else | |
3019eac3 | 9437 | { |
0ab9ce85 | 9438 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 DE |
9439 | |
9440 | for (i = 0; i < lh->num_file_names; ++i) | |
9441 | { | |
9442 | struct file_entry *fe = &lh->file_names[i]; | |
9443 | ||
9444 | fe->symtab = tu_group->symtabs[i]; | |
9445 | } | |
3019eac3 DE |
9446 | } |
9447 | ||
f4dc4d17 DE |
9448 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
9449 | so they don't have a "real" (so to speak) symtab anyway. | |
9450 | There is later code that will assign the main symtab to all symbols | |
9451 | that don't have one. We need to handle the case of a symbol with a | |
9452 | missing symtab (DW_AT_decl_file) anyway. */ | |
9453 | } | |
3019eac3 | 9454 | |
f4dc4d17 DE |
9455 | /* Process DW_TAG_type_unit. |
9456 | For TUs we want to skip the first top level sibling if it's not the | |
9457 | actual type being defined by this TU. In this case the first top | |
9458 | level sibling is there to provide context only. */ | |
3019eac3 | 9459 | |
f4dc4d17 DE |
9460 | static void |
9461 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9462 | { | |
9463 | struct die_info *child_die; | |
3019eac3 | 9464 | |
f4dc4d17 DE |
9465 | prepare_one_comp_unit (cu, die, language_minimal); |
9466 | ||
9467 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
9468 | We do this before processing child DIEs, so that the line header table | |
9469 | is available for DW_AT_decl_file. */ | |
9470 | setup_type_unit_groups (die, cu); | |
9471 | ||
9472 | if (die->child != NULL) | |
9473 | { | |
9474 | child_die = die->child; | |
9475 | while (child_die && child_die->tag) | |
9476 | { | |
9477 | process_die (child_die, cu); | |
9478 | child_die = sibling_die (child_die); | |
9479 | } | |
9480 | } | |
3019eac3 DE |
9481 | } |
9482 | \f | |
80626a55 DE |
9483 | /* DWO/DWP files. |
9484 | ||
9485 | http://gcc.gnu.org/wiki/DebugFission | |
9486 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
9487 | ||
9488 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
9489 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
9490 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
9491 | |
9492 | static hashval_t | |
9493 | hash_dwo_file (const void *item) | |
9494 | { | |
9a3c8263 | 9495 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 9496 | hashval_t hash; |
3019eac3 | 9497 | |
a2ce51a0 DE |
9498 | hash = htab_hash_string (dwo_file->dwo_name); |
9499 | if (dwo_file->comp_dir != NULL) | |
9500 | hash += htab_hash_string (dwo_file->comp_dir); | |
9501 | return hash; | |
3019eac3 DE |
9502 | } |
9503 | ||
9504 | static int | |
9505 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
9506 | { | |
9a3c8263 SM |
9507 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
9508 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 9509 | |
a2ce51a0 DE |
9510 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
9511 | return 0; | |
9512 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
9513 | return lhs->comp_dir == rhs->comp_dir; | |
9514 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
9515 | } |
9516 | ||
9517 | /* Allocate a hash table for DWO files. */ | |
9518 | ||
9519 | static htab_t | |
9520 | allocate_dwo_file_hash_table (void) | |
9521 | { | |
9522 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9523 | ||
9524 | return htab_create_alloc_ex (41, | |
9525 | hash_dwo_file, | |
9526 | eq_dwo_file, | |
9527 | NULL, | |
9528 | &objfile->objfile_obstack, | |
9529 | hashtab_obstack_allocate, | |
9530 | dummy_obstack_deallocate); | |
9531 | } | |
9532 | ||
80626a55 DE |
9533 | /* Lookup DWO file DWO_NAME. */ |
9534 | ||
9535 | static void ** | |
0ac5b59e | 9536 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
9537 | { |
9538 | struct dwo_file find_entry; | |
9539 | void **slot; | |
9540 | ||
9541 | if (dwarf2_per_objfile->dwo_files == NULL) | |
9542 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
9543 | ||
9544 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
9545 | find_entry.dwo_name = dwo_name; |
9546 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
9547 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
9548 | ||
9549 | return slot; | |
9550 | } | |
9551 | ||
3019eac3 DE |
9552 | static hashval_t |
9553 | hash_dwo_unit (const void *item) | |
9554 | { | |
9a3c8263 | 9555 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
9556 | |
9557 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
9558 | return dwo_unit->signature; | |
9559 | } | |
9560 | ||
9561 | static int | |
9562 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
9563 | { | |
9a3c8263 SM |
9564 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
9565 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
9566 | |
9567 | /* The signature is assumed to be unique within the DWO file. | |
9568 | So while object file CU dwo_id's always have the value zero, | |
9569 | that's OK, assuming each object file DWO file has only one CU, | |
9570 | and that's the rule for now. */ | |
9571 | return lhs->signature == rhs->signature; | |
9572 | } | |
9573 | ||
9574 | /* Allocate a hash table for DWO CUs,TUs. | |
9575 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
9576 | ||
9577 | static htab_t | |
9578 | allocate_dwo_unit_table (struct objfile *objfile) | |
9579 | { | |
9580 | /* Start out with a pretty small number. | |
9581 | Generally DWO files contain only one CU and maybe some TUs. */ | |
9582 | return htab_create_alloc_ex (3, | |
9583 | hash_dwo_unit, | |
9584 | eq_dwo_unit, | |
9585 | NULL, | |
9586 | &objfile->objfile_obstack, | |
9587 | hashtab_obstack_allocate, | |
9588 | dummy_obstack_deallocate); | |
9589 | } | |
9590 | ||
80626a55 | 9591 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 9592 | |
19c3d4c9 | 9593 | struct create_dwo_cu_data |
3019eac3 DE |
9594 | { |
9595 | struct dwo_file *dwo_file; | |
19c3d4c9 | 9596 | struct dwo_unit dwo_unit; |
3019eac3 DE |
9597 | }; |
9598 | ||
19c3d4c9 | 9599 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
9600 | |
9601 | static void | |
19c3d4c9 DE |
9602 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
9603 | const gdb_byte *info_ptr, | |
9604 | struct die_info *comp_unit_die, | |
9605 | int has_children, | |
9606 | void *datap) | |
3019eac3 DE |
9607 | { |
9608 | struct dwarf2_cu *cu = reader->cu; | |
3019eac3 | 9609 | sect_offset offset = cu->per_cu->offset; |
8a0459fd | 9610 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 9611 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 9612 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 9613 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 9614 | struct attribute *attr; |
3019eac3 DE |
9615 | |
9616 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
9617 | if (attr == NULL) | |
9618 | { | |
19c3d4c9 DE |
9619 | complaint (&symfile_complaints, |
9620 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
9621 | " its dwo_id [in module %s]"), | |
9622 | offset.sect_off, dwo_file->dwo_name); | |
3019eac3 DE |
9623 | return; |
9624 | } | |
9625 | ||
3019eac3 DE |
9626 | dwo_unit->dwo_file = dwo_file; |
9627 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 9628 | dwo_unit->section = section; |
3019eac3 DE |
9629 | dwo_unit->offset = offset; |
9630 | dwo_unit->length = cu->per_cu->length; | |
9631 | ||
b4f54984 | 9632 | if (dwarf_read_debug) |
4031ecc5 DE |
9633 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9634 | offset.sect_off, hex_string (dwo_unit->signature)); | |
3019eac3 DE |
9635 | } |
9636 | ||
19c3d4c9 DE |
9637 | /* Create the dwo_unit for the lone CU in DWO_FILE. |
9638 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 | 9639 | |
19c3d4c9 DE |
9640 | static struct dwo_unit * |
9641 | create_dwo_cu (struct dwo_file *dwo_file) | |
3019eac3 DE |
9642 | { |
9643 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9644 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
d521ce57 | 9645 | const gdb_byte *info_ptr, *end_ptr; |
19c3d4c9 DE |
9646 | struct create_dwo_cu_data create_dwo_cu_data; |
9647 | struct dwo_unit *dwo_unit; | |
3019eac3 DE |
9648 | |
9649 | dwarf2_read_section (objfile, section); | |
9650 | info_ptr = section->buffer; | |
9651 | ||
9652 | if (info_ptr == NULL) | |
9653 | return NULL; | |
9654 | ||
b4f54984 | 9655 | if (dwarf_read_debug) |
19c3d4c9 DE |
9656 | { |
9657 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
a32a8923 DE |
9658 | get_section_name (section), |
9659 | get_section_file_name (section)); | |
19c3d4c9 | 9660 | } |
3019eac3 | 9661 | |
19c3d4c9 DE |
9662 | create_dwo_cu_data.dwo_file = dwo_file; |
9663 | dwo_unit = NULL; | |
3019eac3 DE |
9664 | |
9665 | end_ptr = info_ptr + section->size; | |
9666 | while (info_ptr < end_ptr) | |
9667 | { | |
9668 | struct dwarf2_per_cu_data per_cu; | |
9669 | ||
19c3d4c9 DE |
9670 | memset (&create_dwo_cu_data.dwo_unit, 0, |
9671 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
9672 | memset (&per_cu, 0, sizeof (per_cu)); |
9673 | per_cu.objfile = objfile; | |
9674 | per_cu.is_debug_types = 0; | |
9675 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 9676 | per_cu.section = section; |
3019eac3 | 9677 | |
33e80786 | 9678 | init_cutu_and_read_dies_no_follow (&per_cu, dwo_file, |
19c3d4c9 DE |
9679 | create_dwo_cu_reader, |
9680 | &create_dwo_cu_data); | |
9681 | ||
9682 | if (create_dwo_cu_data.dwo_unit.dwo_file != NULL) | |
9683 | { | |
9684 | /* If we've already found one, complain. We only support one | |
9685 | because having more than one requires hacking the dwo_name of | |
9686 | each to match, which is highly unlikely to happen. */ | |
9687 | if (dwo_unit != NULL) | |
9688 | { | |
9689 | complaint (&symfile_complaints, | |
9690 | _("Multiple CUs in DWO file %s [in module %s]"), | |
4262abfb | 9691 | dwo_file->dwo_name, objfile_name (objfile)); |
19c3d4c9 DE |
9692 | break; |
9693 | } | |
9694 | ||
9695 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9696 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
9697 | } | |
3019eac3 DE |
9698 | |
9699 | info_ptr += per_cu.length; | |
9700 | } | |
9701 | ||
19c3d4c9 | 9702 | return dwo_unit; |
3019eac3 DE |
9703 | } |
9704 | ||
80626a55 DE |
9705 | /* DWP file .debug_{cu,tu}_index section format: |
9706 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
9707 | ||
d2415c6c DE |
9708 | DWP Version 1: |
9709 | ||
80626a55 DE |
9710 | Both index sections have the same format, and serve to map a 64-bit |
9711 | signature to a set of section numbers. Each section begins with a header, | |
9712 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
9713 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
9714 | aligned at 8-byte boundaries in the file. | |
9715 | ||
d2415c6c DE |
9716 | The index section header consists of: |
9717 | ||
9718 | V, 32 bit version number | |
9719 | -, 32 bits unused | |
9720 | N, 32 bit number of compilation units or type units in the index | |
9721 | M, 32 bit number of slots in the hash table | |
80626a55 | 9722 | |
d2415c6c | 9723 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 9724 | |
d2415c6c DE |
9725 | The hash table begins at offset 16 in the section, and consists of an array |
9726 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
9727 | order of the application binary). Unused slots in the hash table are 0. | |
9728 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 9729 | |
d2415c6c DE |
9730 | The parallel table begins immediately after the hash table |
9731 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
9732 | array of 32-bit indexes (using the byte order of the application binary), | |
9733 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
9734 | table contains a 32-bit index into the pool of section numbers. For unused | |
9735 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 9736 | |
73869dc2 DE |
9737 | The pool of section numbers begins immediately following the hash table |
9738 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
9739 | section numbers consists of an array of 32-bit words (using the byte order | |
9740 | of the application binary). Each item in the array is indexed starting | |
9741 | from 0. The hash table entry provides the index of the first section | |
9742 | number in the set. Additional section numbers in the set follow, and the | |
9743 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
9744 | ||
9745 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
9746 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
9747 | be the second entry. Other members of the set may follow in any order. | |
9748 | ||
9749 | --- | |
9750 | ||
9751 | DWP Version 2: | |
9752 | ||
9753 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
9754 | and the entries in the index tables are now offsets into these sections. | |
9755 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
9756 | section. | |
9757 | ||
9758 | Index Section Contents: | |
9759 | Header | |
9760 | Hash Table of Signatures dwp_hash_table.hash_table | |
9761 | Parallel Table of Indices dwp_hash_table.unit_table | |
9762 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
9763 | Table of Section Sizes dwp_hash_table.v2.sizes | |
9764 | ||
9765 | The index section header consists of: | |
9766 | ||
9767 | V, 32 bit version number | |
9768 | L, 32 bit number of columns in the table of section offsets | |
9769 | N, 32 bit number of compilation units or type units in the index | |
9770 | M, 32 bit number of slots in the hash table | |
9771 | ||
9772 | Numbers are recorded using the byte order of the application binary. | |
9773 | ||
9774 | The hash table has the same format as version 1. | |
9775 | The parallel table of indices has the same format as version 1, | |
9776 | except that the entries are origin-1 indices into the table of sections | |
9777 | offsets and the table of section sizes. | |
9778 | ||
9779 | The table of offsets begins immediately following the parallel table | |
9780 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
9781 | a two-dimensional array of 32-bit words (using the byte order of the | |
9782 | application binary), with L columns and N+1 rows, in row-major order. | |
9783 | Each row in the array is indexed starting from 0. The first row provides | |
9784 | a key to the remaining rows: each column in this row provides an identifier | |
9785 | for a debug section, and the offsets in the same column of subsequent rows | |
9786 | refer to that section. The section identifiers are: | |
9787 | ||
9788 | DW_SECT_INFO 1 .debug_info.dwo | |
9789 | DW_SECT_TYPES 2 .debug_types.dwo | |
9790 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
9791 | DW_SECT_LINE 4 .debug_line.dwo | |
9792 | DW_SECT_LOC 5 .debug_loc.dwo | |
9793 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
9794 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
9795 | DW_SECT_MACRO 8 .debug_macro.dwo | |
9796 | ||
9797 | The offsets provided by the CU and TU index sections are the base offsets | |
9798 | for the contributions made by each CU or TU to the corresponding section | |
9799 | in the package file. Each CU and TU header contains an abbrev_offset | |
9800 | field, used to find the abbreviations table for that CU or TU within the | |
9801 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
9802 | be interpreted as relative to the base offset given in the index section. | |
9803 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
9804 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
9805 | and offsets into other debug sections obtained from DWARF attributes should | |
9806 | also be interpreted as relative to the corresponding base offset. | |
9807 | ||
9808 | The table of sizes begins immediately following the table of offsets. | |
9809 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
9810 | with L columns and N rows, in row-major order. Each row in the array is | |
9811 | indexed starting from 1 (row 0 is shared by the two tables). | |
9812 | ||
9813 | --- | |
9814 | ||
9815 | Hash table lookup is handled the same in version 1 and 2: | |
9816 | ||
9817 | We assume that N and M will not exceed 2^32 - 1. | |
9818 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
9819 | ||
d2415c6c DE |
9820 | Given a 64-bit compilation unit signature or a type signature S, an entry |
9821 | in the hash table is located as follows: | |
80626a55 | 9822 | |
d2415c6c DE |
9823 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
9824 | the low-order k bits all set to 1. | |
80626a55 | 9825 | |
d2415c6c | 9826 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 9827 | |
d2415c6c DE |
9828 | 3) If the hash table entry at index H matches the signature, use that |
9829 | entry. If the hash table entry at index H is unused (all zeroes), | |
9830 | terminate the search: the signature is not present in the table. | |
80626a55 | 9831 | |
d2415c6c | 9832 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 9833 | |
d2415c6c | 9834 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 9835 | to stop at an unused slot or find the match. */ |
80626a55 DE |
9836 | |
9837 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
9838 | .debug_{info,types}.dwo in DWP_FILE. | |
9839 | Returns NULL if there isn't one. | |
9840 | Note: This function processes DWP files only, not DWO files. */ | |
9841 | ||
9842 | static struct dwp_hash_table * | |
9843 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
9844 | { | |
9845 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9846 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 9847 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 9848 | struct dwarf2_section_info *index; |
73869dc2 | 9849 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
9850 | struct dwp_hash_table *htab; |
9851 | ||
9852 | if (is_debug_types) | |
9853 | index = &dwp_file->sections.tu_index; | |
9854 | else | |
9855 | index = &dwp_file->sections.cu_index; | |
9856 | ||
9857 | if (dwarf2_section_empty_p (index)) | |
9858 | return NULL; | |
9859 | dwarf2_read_section (objfile, index); | |
9860 | ||
9861 | index_ptr = index->buffer; | |
9862 | index_end = index_ptr + index->size; | |
9863 | ||
9864 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
9865 | index_ptr += 4; |
9866 | if (version == 2) | |
9867 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
9868 | else | |
9869 | nr_columns = 0; | |
9870 | index_ptr += 4; | |
80626a55 DE |
9871 | nr_units = read_4_bytes (dbfd, index_ptr); |
9872 | index_ptr += 4; | |
9873 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
9874 | index_ptr += 4; | |
9875 | ||
73869dc2 | 9876 | if (version != 1 && version != 2) |
80626a55 | 9877 | { |
21aa081e | 9878 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 9879 | " [in module %s]"), |
21aa081e | 9880 | pulongest (version), dwp_file->name); |
80626a55 DE |
9881 | } |
9882 | if (nr_slots != (nr_slots & -nr_slots)) | |
9883 | { | |
21aa081e | 9884 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 9885 | " is not power of 2 [in module %s]"), |
21aa081e | 9886 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
9887 | } |
9888 | ||
9889 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
9890 | htab->version = version; |
9891 | htab->nr_columns = nr_columns; | |
80626a55 DE |
9892 | htab->nr_units = nr_units; |
9893 | htab->nr_slots = nr_slots; | |
9894 | htab->hash_table = index_ptr; | |
9895 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
9896 | |
9897 | /* Exit early if the table is empty. */ | |
9898 | if (nr_slots == 0 || nr_units == 0 | |
9899 | || (version == 2 && nr_columns == 0)) | |
9900 | { | |
9901 | /* All must be zero. */ | |
9902 | if (nr_slots != 0 || nr_units != 0 | |
9903 | || (version == 2 && nr_columns != 0)) | |
9904 | { | |
9905 | complaint (&symfile_complaints, | |
9906 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
9907 | " all zero [in modules %s]"), | |
9908 | dwp_file->name); | |
9909 | } | |
9910 | return htab; | |
9911 | } | |
9912 | ||
9913 | if (version == 1) | |
9914 | { | |
9915 | htab->section_pool.v1.indices = | |
9916 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9917 | /* It's harder to decide whether the section is too small in v1. | |
9918 | V1 is deprecated anyway so we punt. */ | |
9919 | } | |
9920 | else | |
9921 | { | |
9922 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9923 | int *ids = htab->section_pool.v2.section_ids; | |
9924 | /* Reverse map for error checking. */ | |
9925 | int ids_seen[DW_SECT_MAX + 1]; | |
9926 | int i; | |
9927 | ||
9928 | if (nr_columns < 2) | |
9929 | { | |
9930 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
9931 | " in section table [in module %s]"), | |
9932 | dwp_file->name); | |
9933 | } | |
9934 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
9935 | { | |
9936 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
9937 | " in section table [in module %s]"), | |
9938 | dwp_file->name); | |
9939 | } | |
9940 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9941 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9942 | for (i = 0; i < nr_columns; ++i) | |
9943 | { | |
9944 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
9945 | ||
9946 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
9947 | { | |
9948 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
9949 | " in section table [in module %s]"), | |
9950 | id, dwp_file->name); | |
9951 | } | |
9952 | if (ids_seen[id] != -1) | |
9953 | { | |
9954 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
9955 | " id %d in section table [in module %s]"), | |
9956 | id, dwp_file->name); | |
9957 | } | |
9958 | ids_seen[id] = i; | |
9959 | ids[i] = id; | |
9960 | } | |
9961 | /* Must have exactly one info or types section. */ | |
9962 | if (((ids_seen[DW_SECT_INFO] != -1) | |
9963 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
9964 | != 1) | |
9965 | { | |
9966 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
9967 | " DWO info/types section [in module %s]"), | |
9968 | dwp_file->name); | |
9969 | } | |
9970 | /* Must have an abbrev section. */ | |
9971 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
9972 | { | |
9973 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
9974 | " section [in module %s]"), | |
9975 | dwp_file->name); | |
9976 | } | |
9977 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
9978 | htab->section_pool.v2.sizes = | |
9979 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
9980 | * nr_units * nr_columns); | |
9981 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
9982 | * nr_units * nr_columns)) | |
9983 | > index_end) | |
9984 | { | |
9985 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
9986 | " [in module %s]"), | |
9987 | dwp_file->name); | |
9988 | } | |
9989 | } | |
80626a55 DE |
9990 | |
9991 | return htab; | |
9992 | } | |
9993 | ||
9994 | /* Update SECTIONS with the data from SECTP. | |
9995 | ||
9996 | This function is like the other "locate" section routines that are | |
9997 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 9998 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
9999 | |
10000 | The result is non-zero for success, or zero if an error was found. */ | |
10001 | ||
10002 | static int | |
73869dc2 DE |
10003 | locate_v1_virtual_dwo_sections (asection *sectp, |
10004 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
10005 | { |
10006 | const struct dwop_section_names *names = &dwop_section_names; | |
10007 | ||
10008 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10009 | { | |
10010 | /* There can be only one. */ | |
049412e3 | 10011 | if (sections->abbrev.s.section != NULL) |
80626a55 | 10012 | return 0; |
049412e3 | 10013 | sections->abbrev.s.section = sectp; |
80626a55 DE |
10014 | sections->abbrev.size = bfd_get_section_size (sectp); |
10015 | } | |
10016 | else if (section_is_p (sectp->name, &names->info_dwo) | |
10017 | || section_is_p (sectp->name, &names->types_dwo)) | |
10018 | { | |
10019 | /* There can be only one. */ | |
049412e3 | 10020 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 10021 | return 0; |
049412e3 | 10022 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
10023 | sections->info_or_types.size = bfd_get_section_size (sectp); |
10024 | } | |
10025 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10026 | { | |
10027 | /* There can be only one. */ | |
049412e3 | 10028 | if (sections->line.s.section != NULL) |
80626a55 | 10029 | return 0; |
049412e3 | 10030 | sections->line.s.section = sectp; |
80626a55 DE |
10031 | sections->line.size = bfd_get_section_size (sectp); |
10032 | } | |
10033 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10034 | { | |
10035 | /* There can be only one. */ | |
049412e3 | 10036 | if (sections->loc.s.section != NULL) |
80626a55 | 10037 | return 0; |
049412e3 | 10038 | sections->loc.s.section = sectp; |
80626a55 DE |
10039 | sections->loc.size = bfd_get_section_size (sectp); |
10040 | } | |
10041 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10042 | { | |
10043 | /* There can be only one. */ | |
049412e3 | 10044 | if (sections->macinfo.s.section != NULL) |
80626a55 | 10045 | return 0; |
049412e3 | 10046 | sections->macinfo.s.section = sectp; |
80626a55 DE |
10047 | sections->macinfo.size = bfd_get_section_size (sectp); |
10048 | } | |
10049 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10050 | { | |
10051 | /* There can be only one. */ | |
049412e3 | 10052 | if (sections->macro.s.section != NULL) |
80626a55 | 10053 | return 0; |
049412e3 | 10054 | sections->macro.s.section = sectp; |
80626a55 DE |
10055 | sections->macro.size = bfd_get_section_size (sectp); |
10056 | } | |
10057 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10058 | { | |
10059 | /* There can be only one. */ | |
049412e3 | 10060 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 10061 | return 0; |
049412e3 | 10062 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
10063 | sections->str_offsets.size = bfd_get_section_size (sectp); |
10064 | } | |
10065 | else | |
10066 | { | |
10067 | /* No other kind of section is valid. */ | |
10068 | return 0; | |
10069 | } | |
10070 | ||
10071 | return 1; | |
10072 | } | |
10073 | ||
73869dc2 DE |
10074 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
10075 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
10076 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
10077 | This is for DWP version 1 files. */ | |
80626a55 DE |
10078 | |
10079 | static struct dwo_unit * | |
73869dc2 DE |
10080 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
10081 | uint32_t unit_index, | |
10082 | const char *comp_dir, | |
10083 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
10084 | { |
10085 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
10086 | const struct dwp_hash_table *dwp_htab = |
10087 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
10088 | bfd *dbfd = dwp_file->dbfd; |
10089 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10090 | struct dwo_file *dwo_file; | |
10091 | struct dwo_unit *dwo_unit; | |
73869dc2 | 10092 | struct virtual_v1_dwo_sections sections; |
80626a55 DE |
10093 | void **dwo_file_slot; |
10094 | char *virtual_dwo_name; | |
80626a55 DE |
10095 | struct cleanup *cleanups; |
10096 | int i; | |
10097 | ||
73869dc2 DE |
10098 | gdb_assert (dwp_file->version == 1); |
10099 | ||
b4f54984 | 10100 | if (dwarf_read_debug) |
80626a55 | 10101 | { |
73869dc2 | 10102 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 10103 | kind, |
73869dc2 | 10104 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
10105 | dwp_file->name); |
10106 | } | |
10107 | ||
19ac8c2e | 10108 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
10109 | Put a limit on the number of sections we look for so that bad data |
10110 | doesn't cause us to loop forever. */ | |
10111 | ||
73869dc2 | 10112 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
10113 | (1 /* .debug_info or .debug_types */ \ |
10114 | + 1 /* .debug_abbrev */ \ | |
10115 | + 1 /* .debug_line */ \ | |
10116 | + 1 /* .debug_loc */ \ | |
10117 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 10118 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
10119 | + 1 /* trailing zero */) |
10120 | ||
10121 | memset (§ions, 0, sizeof (sections)); | |
10122 | cleanups = make_cleanup (null_cleanup, 0); | |
10123 | ||
73869dc2 | 10124 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
10125 | { |
10126 | asection *sectp; | |
10127 | uint32_t section_nr = | |
10128 | read_4_bytes (dbfd, | |
73869dc2 DE |
10129 | dwp_htab->section_pool.v1.indices |
10130 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
10131 | |
10132 | if (section_nr == 0) | |
10133 | break; | |
10134 | if (section_nr >= dwp_file->num_sections) | |
10135 | { | |
10136 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
10137 | " [in module %s]"), | |
10138 | dwp_file->name); | |
10139 | } | |
10140 | ||
10141 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 10142 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
10143 | { |
10144 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
10145 | " [in module %s]"), | |
10146 | dwp_file->name); | |
10147 | } | |
10148 | } | |
10149 | ||
10150 | if (i < 2 | |
a32a8923 DE |
10151 | || dwarf2_section_empty_p (§ions.info_or_types) |
10152 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
10153 | { |
10154 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
10155 | " [in module %s]"), | |
10156 | dwp_file->name); | |
10157 | } | |
73869dc2 | 10158 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
10159 | { |
10160 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
10161 | " [in module %s]"), | |
10162 | dwp_file->name); | |
10163 | } | |
10164 | ||
10165 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10166 | have dwo_unit "live" in that. At least for now. | |
10167 | ||
10168 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 10169 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
10170 | file, we can combine them back into a virtual DWO file to save space |
10171 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
10172 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
10173 | ||
2792b94d PM |
10174 | virtual_dwo_name = |
10175 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
a32a8923 DE |
10176 | get_section_id (§ions.abbrev), |
10177 | get_section_id (§ions.line), | |
10178 | get_section_id (§ions.loc), | |
10179 | get_section_id (§ions.str_offsets)); | |
80626a55 DE |
10180 | make_cleanup (xfree, virtual_dwo_name); |
10181 | /* Can we use an existing virtual DWO file? */ | |
0ac5b59e | 10182 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); |
80626a55 DE |
10183 | /* Create one if necessary. */ |
10184 | if (*dwo_file_slot == NULL) | |
10185 | { | |
b4f54984 | 10186 | if (dwarf_read_debug) |
80626a55 DE |
10187 | { |
10188 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10189 | virtual_dwo_name); | |
10190 | } | |
10191 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
10192 | dwo_file->dwo_name |
10193 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10194 | virtual_dwo_name, | |
10195 | strlen (virtual_dwo_name)); | |
0ac5b59e | 10196 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
10197 | dwo_file->sections.abbrev = sections.abbrev; |
10198 | dwo_file->sections.line = sections.line; | |
10199 | dwo_file->sections.loc = sections.loc; | |
10200 | dwo_file->sections.macinfo = sections.macinfo; | |
10201 | dwo_file->sections.macro = sections.macro; | |
10202 | dwo_file->sections.str_offsets = sections.str_offsets; | |
10203 | /* The "str" section is global to the entire DWP file. */ | |
10204 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 10205 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
10206 | there's no need to record it in dwo_file. |
10207 | Also, we can't simply record type sections in dwo_file because | |
10208 | we record a pointer into the vector in dwo_unit. As we collect more | |
10209 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
10210 | for it, invalidating all copies of pointers into the previous |
10211 | contents. */ | |
80626a55 DE |
10212 | *dwo_file_slot = dwo_file; |
10213 | } | |
10214 | else | |
10215 | { | |
b4f54984 | 10216 | if (dwarf_read_debug) |
80626a55 DE |
10217 | { |
10218 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10219 | virtual_dwo_name); | |
10220 | } | |
9a3c8263 | 10221 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 DE |
10222 | } |
10223 | do_cleanups (cleanups); | |
10224 | ||
10225 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10226 | dwo_unit->dwo_file = dwo_file; | |
10227 | dwo_unit->signature = signature; | |
8d749320 SM |
10228 | dwo_unit->section = |
10229 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 10230 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 10231 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
10232 | |
10233 | return dwo_unit; | |
10234 | } | |
10235 | ||
73869dc2 DE |
10236 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
10237 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
10238 | piece within that section used by a TU/CU, return a virtual section | |
10239 | of just that piece. */ | |
10240 | ||
10241 | static struct dwarf2_section_info | |
10242 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
10243 | bfd_size_type offset, bfd_size_type size) | |
10244 | { | |
10245 | struct dwarf2_section_info result; | |
10246 | asection *sectp; | |
10247 | ||
10248 | gdb_assert (section != NULL); | |
10249 | gdb_assert (!section->is_virtual); | |
10250 | ||
10251 | memset (&result, 0, sizeof (result)); | |
10252 | result.s.containing_section = section; | |
10253 | result.is_virtual = 1; | |
10254 | ||
10255 | if (size == 0) | |
10256 | return result; | |
10257 | ||
10258 | sectp = get_section_bfd_section (section); | |
10259 | ||
10260 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
10261 | bounds of the real section. This is a pretty-rare event, so just | |
10262 | flag an error (easier) instead of a warning and trying to cope. */ | |
10263 | if (sectp == NULL | |
10264 | || offset + size > bfd_get_section_size (sectp)) | |
10265 | { | |
10266 | bfd *abfd = sectp->owner; | |
10267 | ||
10268 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" | |
10269 | " in section %s [in module %s]"), | |
10270 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
10271 | objfile_name (dwarf2_per_objfile->objfile)); | |
10272 | } | |
10273 | ||
10274 | result.virtual_offset = offset; | |
10275 | result.size = size; | |
10276 | return result; | |
10277 | } | |
10278 | ||
10279 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
10280 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
10281 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
10282 | This is for DWP version 2 files. */ | |
10283 | ||
10284 | static struct dwo_unit * | |
10285 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
10286 | uint32_t unit_index, | |
10287 | const char *comp_dir, | |
10288 | ULONGEST signature, int is_debug_types) | |
10289 | { | |
10290 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10291 | const struct dwp_hash_table *dwp_htab = | |
10292 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10293 | bfd *dbfd = dwp_file->dbfd; | |
10294 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10295 | struct dwo_file *dwo_file; | |
10296 | struct dwo_unit *dwo_unit; | |
10297 | struct virtual_v2_dwo_sections sections; | |
10298 | void **dwo_file_slot; | |
10299 | char *virtual_dwo_name; | |
73869dc2 DE |
10300 | struct cleanup *cleanups; |
10301 | int i; | |
10302 | ||
10303 | gdb_assert (dwp_file->version == 2); | |
10304 | ||
b4f54984 | 10305 | if (dwarf_read_debug) |
73869dc2 DE |
10306 | { |
10307 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
10308 | kind, | |
10309 | pulongest (unit_index), hex_string (signature), | |
10310 | dwp_file->name); | |
10311 | } | |
10312 | ||
10313 | /* Fetch the section offsets of this DWO unit. */ | |
10314 | ||
10315 | memset (§ions, 0, sizeof (sections)); | |
10316 | cleanups = make_cleanup (null_cleanup, 0); | |
10317 | ||
10318 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
10319 | { | |
10320 | uint32_t offset = read_4_bytes (dbfd, | |
10321 | dwp_htab->section_pool.v2.offsets | |
10322 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10323 | + i) | |
10324 | * sizeof (uint32_t))); | |
10325 | uint32_t size = read_4_bytes (dbfd, | |
10326 | dwp_htab->section_pool.v2.sizes | |
10327 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10328 | + i) | |
10329 | * sizeof (uint32_t))); | |
10330 | ||
10331 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
10332 | { | |
10333 | case DW_SECT_INFO: | |
10334 | case DW_SECT_TYPES: | |
10335 | sections.info_or_types_offset = offset; | |
10336 | sections.info_or_types_size = size; | |
10337 | break; | |
10338 | case DW_SECT_ABBREV: | |
10339 | sections.abbrev_offset = offset; | |
10340 | sections.abbrev_size = size; | |
10341 | break; | |
10342 | case DW_SECT_LINE: | |
10343 | sections.line_offset = offset; | |
10344 | sections.line_size = size; | |
10345 | break; | |
10346 | case DW_SECT_LOC: | |
10347 | sections.loc_offset = offset; | |
10348 | sections.loc_size = size; | |
10349 | break; | |
10350 | case DW_SECT_STR_OFFSETS: | |
10351 | sections.str_offsets_offset = offset; | |
10352 | sections.str_offsets_size = size; | |
10353 | break; | |
10354 | case DW_SECT_MACINFO: | |
10355 | sections.macinfo_offset = offset; | |
10356 | sections.macinfo_size = size; | |
10357 | break; | |
10358 | case DW_SECT_MACRO: | |
10359 | sections.macro_offset = offset; | |
10360 | sections.macro_size = size; | |
10361 | break; | |
10362 | } | |
10363 | } | |
10364 | ||
10365 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10366 | have dwo_unit "live" in that. At least for now. | |
10367 | ||
10368 | The DWP file can be made up of a random collection of CUs and TUs. | |
10369 | However, for each CU + set of TUs that came from the same original DWO | |
10370 | file, we can combine them back into a virtual DWO file to save space | |
10371 | (fewer struct dwo_file objects to allocate). Remember that for really | |
10372 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
10373 | ||
10374 | virtual_dwo_name = | |
10375 | xstrprintf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
10376 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
10377 | (long) (sections.line_size ? sections.line_offset : 0), | |
10378 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
10379 | (long) (sections.str_offsets_size | |
10380 | ? sections.str_offsets_offset : 0)); | |
10381 | make_cleanup (xfree, virtual_dwo_name); | |
10382 | /* Can we use an existing virtual DWO file? */ | |
10383 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); | |
10384 | /* Create one if necessary. */ | |
10385 | if (*dwo_file_slot == NULL) | |
10386 | { | |
b4f54984 | 10387 | if (dwarf_read_debug) |
73869dc2 DE |
10388 | { |
10389 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10390 | virtual_dwo_name); | |
10391 | } | |
10392 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
10393 | dwo_file->dwo_name |
10394 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10395 | virtual_dwo_name, | |
10396 | strlen (virtual_dwo_name)); | |
73869dc2 DE |
10397 | dwo_file->comp_dir = comp_dir; |
10398 | dwo_file->sections.abbrev = | |
10399 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
10400 | sections.abbrev_offset, sections.abbrev_size); | |
10401 | dwo_file->sections.line = | |
10402 | create_dwp_v2_section (&dwp_file->sections.line, | |
10403 | sections.line_offset, sections.line_size); | |
10404 | dwo_file->sections.loc = | |
10405 | create_dwp_v2_section (&dwp_file->sections.loc, | |
10406 | sections.loc_offset, sections.loc_size); | |
10407 | dwo_file->sections.macinfo = | |
10408 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
10409 | sections.macinfo_offset, sections.macinfo_size); | |
10410 | dwo_file->sections.macro = | |
10411 | create_dwp_v2_section (&dwp_file->sections.macro, | |
10412 | sections.macro_offset, sections.macro_size); | |
10413 | dwo_file->sections.str_offsets = | |
10414 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
10415 | sections.str_offsets_offset, | |
10416 | sections.str_offsets_size); | |
10417 | /* The "str" section is global to the entire DWP file. */ | |
10418 | dwo_file->sections.str = dwp_file->sections.str; | |
10419 | /* The info or types section is assigned below to dwo_unit, | |
10420 | there's no need to record it in dwo_file. | |
10421 | Also, we can't simply record type sections in dwo_file because | |
10422 | we record a pointer into the vector in dwo_unit. As we collect more | |
10423 | types we'll grow the vector and eventually have to reallocate space | |
10424 | for it, invalidating all copies of pointers into the previous | |
10425 | contents. */ | |
10426 | *dwo_file_slot = dwo_file; | |
10427 | } | |
10428 | else | |
10429 | { | |
b4f54984 | 10430 | if (dwarf_read_debug) |
73869dc2 DE |
10431 | { |
10432 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10433 | virtual_dwo_name); | |
10434 | } | |
9a3c8263 | 10435 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 DE |
10436 | } |
10437 | do_cleanups (cleanups); | |
10438 | ||
10439 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10440 | dwo_unit->dwo_file = dwo_file; | |
10441 | dwo_unit->signature = signature; | |
8d749320 SM |
10442 | dwo_unit->section = |
10443 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
73869dc2 DE |
10444 | *dwo_unit->section = create_dwp_v2_section (is_debug_types |
10445 | ? &dwp_file->sections.types | |
10446 | : &dwp_file->sections.info, | |
10447 | sections.info_or_types_offset, | |
10448 | sections.info_or_types_size); | |
10449 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
10450 | ||
10451 | return dwo_unit; | |
10452 | } | |
10453 | ||
57d63ce2 DE |
10454 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
10455 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
10456 | |
10457 | static struct dwo_unit * | |
57d63ce2 DE |
10458 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
10459 | ULONGEST signature, int is_debug_types) | |
80626a55 | 10460 | { |
57d63ce2 DE |
10461 | const struct dwp_hash_table *dwp_htab = |
10462 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 10463 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 10464 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
10465 | uint32_t hash = signature & mask; |
10466 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
10467 | unsigned int i; | |
10468 | void **slot; | |
870f88f7 | 10469 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
10470 | |
10471 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
10472 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
10473 | slot = htab_find_slot (is_debug_types |
10474 | ? dwp_file->loaded_tus | |
10475 | : dwp_file->loaded_cus, | |
10476 | &find_dwo_cu, INSERT); | |
80626a55 DE |
10477 | |
10478 | if (*slot != NULL) | |
9a3c8263 | 10479 | return (struct dwo_unit *) *slot; |
80626a55 DE |
10480 | |
10481 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 10482 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
10483 | { |
10484 | ULONGEST signature_in_table; | |
10485 | ||
10486 | signature_in_table = | |
57d63ce2 | 10487 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
10488 | if (signature_in_table == signature) |
10489 | { | |
57d63ce2 DE |
10490 | uint32_t unit_index = |
10491 | read_4_bytes (dbfd, | |
10492 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 10493 | |
73869dc2 DE |
10494 | if (dwp_file->version == 1) |
10495 | { | |
10496 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
10497 | comp_dir, signature, | |
10498 | is_debug_types); | |
10499 | } | |
10500 | else | |
10501 | { | |
10502 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
10503 | comp_dir, signature, | |
10504 | is_debug_types); | |
10505 | } | |
9a3c8263 | 10506 | return (struct dwo_unit *) *slot; |
80626a55 DE |
10507 | } |
10508 | if (signature_in_table == 0) | |
10509 | return NULL; | |
10510 | hash = (hash + hash2) & mask; | |
10511 | } | |
10512 | ||
10513 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
10514 | " [in module %s]"), | |
10515 | dwp_file->name); | |
10516 | } | |
10517 | ||
ab5088bf | 10518 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
10519 | Open the file specified by FILE_NAME and hand it off to BFD for |
10520 | preliminary analysis. Return a newly initialized bfd *, which | |
10521 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 10522 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
10523 | SEARCH_CWD is true if the current directory is to be searched. |
10524 | It will be searched before debug-file-directory. | |
13aaf454 DE |
10525 | If successful, the file is added to the bfd include table of the |
10526 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 10527 | If unable to find/open the file, return NULL. |
3019eac3 DE |
10528 | NOTE: This function is derived from symfile_bfd_open. */ |
10529 | ||
192b62ce | 10530 | static gdb_bfd_ref_ptr |
6ac97d4c | 10531 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 10532 | { |
80626a55 | 10533 | int desc, flags; |
3019eac3 | 10534 | char *absolute_name; |
9c02c129 DE |
10535 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
10536 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
10537 | to debug_file_directory. */ | |
10538 | char *search_path; | |
10539 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
10540 | ||
6ac97d4c DE |
10541 | if (search_cwd) |
10542 | { | |
10543 | if (*debug_file_directory != '\0') | |
10544 | search_path = concat (".", dirname_separator_string, | |
b36cec19 | 10545 | debug_file_directory, (char *) NULL); |
6ac97d4c DE |
10546 | else |
10547 | search_path = xstrdup ("."); | |
10548 | } | |
9c02c129 | 10549 | else |
6ac97d4c | 10550 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 10551 | |
492c0ab7 | 10552 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
10553 | if (is_dwp) |
10554 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 10555 | desc = openp (search_path, flags, file_name, |
3019eac3 | 10556 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 10557 | xfree (search_path); |
3019eac3 DE |
10558 | if (desc < 0) |
10559 | return NULL; | |
10560 | ||
192b62ce | 10561 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name, gnutarget, desc)); |
a4453b7e | 10562 | xfree (absolute_name); |
9c02c129 DE |
10563 | if (sym_bfd == NULL) |
10564 | return NULL; | |
192b62ce | 10565 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 10566 | |
192b62ce TT |
10567 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
10568 | return NULL; | |
3019eac3 | 10569 | |
13aaf454 DE |
10570 | /* Success. Record the bfd as having been included by the objfile's bfd. |
10571 | This is important because things like demangled_names_hash lives in the | |
10572 | objfile's per_bfd space and may have references to things like symbol | |
10573 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 10574 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 10575 | |
3019eac3 DE |
10576 | return sym_bfd; |
10577 | } | |
10578 | ||
ab5088bf | 10579 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
10580 | COMP_DIR is the DW_AT_comp_dir attribute. |
10581 | The result is the bfd handle of the file. | |
10582 | If there is a problem finding or opening the file, return NULL. | |
10583 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10584 | same as symfile_bfd_open. */ | |
10585 | ||
192b62ce | 10586 | static gdb_bfd_ref_ptr |
ab5088bf | 10587 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 | 10588 | { |
80626a55 | 10589 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 10590 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
10591 | |
10592 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
10593 | ||
10594 | if (comp_dir != NULL) | |
10595 | { | |
b36cec19 PA |
10596 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
10597 | file_name, (char *) NULL); | |
3019eac3 DE |
10598 | |
10599 | /* NOTE: If comp_dir is a relative path, this will also try the | |
10600 | search path, which seems useful. */ | |
192b62ce TT |
10601 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (path_to_try, 0 /*is_dwp*/, |
10602 | 1 /*search_cwd*/)); | |
3019eac3 DE |
10603 | xfree (path_to_try); |
10604 | if (abfd != NULL) | |
10605 | return abfd; | |
10606 | } | |
10607 | ||
10608 | /* That didn't work, try debug-file-directory, which, despite its name, | |
10609 | is a list of paths. */ | |
10610 | ||
10611 | if (*debug_file_directory == '\0') | |
10612 | return NULL; | |
10613 | ||
6ac97d4c | 10614 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10615 | } |
10616 | ||
80626a55 DE |
10617 | /* This function is mapped across the sections and remembers the offset and |
10618 | size of each of the DWO debugging sections we are interested in. */ | |
10619 | ||
10620 | static void | |
10621 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
10622 | { | |
9a3c8263 | 10623 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
10624 | const struct dwop_section_names *names = &dwop_section_names; |
10625 | ||
10626 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10627 | { | |
049412e3 | 10628 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
10629 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
10630 | } | |
10631 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10632 | { | |
049412e3 | 10633 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
10634 | dwo_sections->info.size = bfd_get_section_size (sectp); |
10635 | } | |
10636 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10637 | { | |
049412e3 | 10638 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
10639 | dwo_sections->line.size = bfd_get_section_size (sectp); |
10640 | } | |
10641 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10642 | { | |
049412e3 | 10643 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
10644 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
10645 | } | |
10646 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10647 | { | |
049412e3 | 10648 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
10649 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
10650 | } | |
10651 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10652 | { | |
049412e3 | 10653 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
10654 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
10655 | } | |
10656 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
10657 | { | |
049412e3 | 10658 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
10659 | dwo_sections->str.size = bfd_get_section_size (sectp); |
10660 | } | |
10661 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10662 | { | |
049412e3 | 10663 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
10664 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
10665 | } | |
10666 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10667 | { | |
10668 | struct dwarf2_section_info type_section; | |
10669 | ||
10670 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 10671 | type_section.s.section = sectp; |
80626a55 DE |
10672 | type_section.size = bfd_get_section_size (sectp); |
10673 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
10674 | &type_section); | |
10675 | } | |
10676 | } | |
10677 | ||
ab5088bf | 10678 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 10679 | by PER_CU. This is for the non-DWP case. |
80626a55 | 10680 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
10681 | |
10682 | static struct dwo_file * | |
0ac5b59e DE |
10683 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
10684 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
10685 | { |
10686 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 10687 | struct dwo_file *dwo_file; |
3019eac3 DE |
10688 | struct cleanup *cleanups; |
10689 | ||
192b62ce | 10690 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwo_name, comp_dir)); |
80626a55 DE |
10691 | if (dbfd == NULL) |
10692 | { | |
b4f54984 | 10693 | if (dwarf_read_debug) |
80626a55 DE |
10694 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
10695 | return NULL; | |
10696 | } | |
10697 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10698 | dwo_file->dwo_name = dwo_name; |
10699 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 10700 | dwo_file->dbfd = dbfd.release (); |
3019eac3 DE |
10701 | |
10702 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
10703 | ||
192b62ce TT |
10704 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
10705 | &dwo_file->sections); | |
3019eac3 | 10706 | |
19c3d4c9 | 10707 | dwo_file->cu = create_dwo_cu (dwo_file); |
3019eac3 | 10708 | |
78d4d2c5 JK |
10709 | create_debug_types_hash_table (dwo_file, dwo_file->sections.types, |
10710 | dwo_file->tus); | |
3019eac3 DE |
10711 | |
10712 | discard_cleanups (cleanups); | |
10713 | ||
b4f54984 | 10714 | if (dwarf_read_debug) |
80626a55 DE |
10715 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
10716 | ||
3019eac3 DE |
10717 | return dwo_file; |
10718 | } | |
10719 | ||
80626a55 | 10720 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
10721 | size of each of the DWP debugging sections common to version 1 and 2 that |
10722 | we are interested in. */ | |
3019eac3 | 10723 | |
80626a55 | 10724 | static void |
73869dc2 DE |
10725 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
10726 | void *dwp_file_ptr) | |
3019eac3 | 10727 | { |
9a3c8263 | 10728 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
10729 | const struct dwop_section_names *names = &dwop_section_names; |
10730 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 10731 | |
80626a55 | 10732 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 10733 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
10734 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
10735 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 10736 | |
80626a55 DE |
10737 | /* Look for specific sections that we need. */ |
10738 | if (section_is_p (sectp->name, &names->str_dwo)) | |
10739 | { | |
049412e3 | 10740 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
10741 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
10742 | } | |
10743 | else if (section_is_p (sectp->name, &names->cu_index)) | |
10744 | { | |
049412e3 | 10745 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
10746 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
10747 | } | |
10748 | else if (section_is_p (sectp->name, &names->tu_index)) | |
10749 | { | |
049412e3 | 10750 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
10751 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
10752 | } | |
10753 | } | |
3019eac3 | 10754 | |
73869dc2 DE |
10755 | /* This function is mapped across the sections and remembers the offset and |
10756 | size of each of the DWP version 2 debugging sections that we are interested | |
10757 | in. This is split into a separate function because we don't know if we | |
10758 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
10759 | ||
10760 | static void | |
10761 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
10762 | { | |
9a3c8263 | 10763 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
10764 | const struct dwop_section_names *names = &dwop_section_names; |
10765 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
10766 | ||
10767 | /* Record the ELF section number for later lookup: this is what the | |
10768 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
10769 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
10770 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
10771 | ||
10772 | /* Look for specific sections that we need. */ | |
10773 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10774 | { | |
049412e3 | 10775 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
10776 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
10777 | } | |
10778 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10779 | { | |
049412e3 | 10780 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
10781 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
10782 | } | |
10783 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10784 | { | |
049412e3 | 10785 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
10786 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
10787 | } | |
10788 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10789 | { | |
049412e3 | 10790 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
10791 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
10792 | } | |
10793 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10794 | { | |
049412e3 | 10795 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
10796 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
10797 | } | |
10798 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10799 | { | |
049412e3 | 10800 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
10801 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
10802 | } | |
10803 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10804 | { | |
049412e3 | 10805 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
10806 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
10807 | } | |
10808 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10809 | { | |
049412e3 | 10810 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
10811 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
10812 | } | |
10813 | } | |
10814 | ||
80626a55 | 10815 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10816 | |
80626a55 DE |
10817 | static hashval_t |
10818 | hash_dwp_loaded_cutus (const void *item) | |
10819 | { | |
9a3c8263 | 10820 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 10821 | |
80626a55 DE |
10822 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
10823 | return dwo_unit->signature; | |
3019eac3 DE |
10824 | } |
10825 | ||
80626a55 | 10826 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10827 | |
80626a55 DE |
10828 | static int |
10829 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 10830 | { |
9a3c8263 SM |
10831 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
10832 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 10833 | |
80626a55 DE |
10834 | return dua->signature == dub->signature; |
10835 | } | |
3019eac3 | 10836 | |
80626a55 | 10837 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10838 | |
80626a55 DE |
10839 | static htab_t |
10840 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
10841 | { | |
10842 | return htab_create_alloc_ex (3, | |
10843 | hash_dwp_loaded_cutus, | |
10844 | eq_dwp_loaded_cutus, | |
10845 | NULL, | |
10846 | &objfile->objfile_obstack, | |
10847 | hashtab_obstack_allocate, | |
10848 | dummy_obstack_deallocate); | |
10849 | } | |
3019eac3 | 10850 | |
ab5088bf DE |
10851 | /* Try to open DWP file FILE_NAME. |
10852 | The result is the bfd handle of the file. | |
10853 | If there is a problem finding or opening the file, return NULL. | |
10854 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10855 | same as symfile_bfd_open. */ | |
10856 | ||
192b62ce | 10857 | static gdb_bfd_ref_ptr |
ab5088bf DE |
10858 | open_dwp_file (const char *file_name) |
10859 | { | |
192b62ce TT |
10860 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (file_name, 1 /*is_dwp*/, |
10861 | 1 /*search_cwd*/)); | |
6ac97d4c DE |
10862 | if (abfd != NULL) |
10863 | return abfd; | |
10864 | ||
10865 | /* Work around upstream bug 15652. | |
10866 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
10867 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
10868 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
10869 | of the executable's path may have discarded the needed info. | |
10870 | [IWBN if the dwp file name was recorded in the executable, akin to | |
10871 | .gnu_debuglink, but that doesn't exist yet.] | |
10872 | Strip the directory from FILE_NAME and search again. */ | |
10873 | if (*debug_file_directory != '\0') | |
10874 | { | |
10875 | /* Don't implicitly search the current directory here. | |
10876 | If the user wants to search "." to handle this case, | |
10877 | it must be added to debug-file-directory. */ | |
10878 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
10879 | 0 /*search_cwd*/); | |
10880 | } | |
10881 | ||
10882 | return NULL; | |
ab5088bf DE |
10883 | } |
10884 | ||
80626a55 DE |
10885 | /* Initialize the use of the DWP file for the current objfile. |
10886 | By convention the name of the DWP file is ${objfile}.dwp. | |
10887 | The result is NULL if it can't be found. */ | |
a766d390 | 10888 | |
80626a55 | 10889 | static struct dwp_file * |
ab5088bf | 10890 | open_and_init_dwp_file (void) |
80626a55 DE |
10891 | { |
10892 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10893 | struct dwp_file *dwp_file; | |
10894 | char *dwp_name; | |
6c447423 | 10895 | struct cleanup *cleanups = make_cleanup (null_cleanup, 0); |
80626a55 | 10896 | |
82bf32bc JK |
10897 | /* Try to find first .dwp for the binary file before any symbolic links |
10898 | resolving. */ | |
6c447423 DE |
10899 | |
10900 | /* If the objfile is a debug file, find the name of the real binary | |
10901 | file and get the name of dwp file from there. */ | |
10902 | if (objfile->separate_debug_objfile_backlink != NULL) | |
10903 | { | |
10904 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
10905 | const char *backlink_basename = lbasename (backlink->original_name); | |
10906 | char *debug_dirname = ldirname (objfile->original_name); | |
10907 | ||
10908 | make_cleanup (xfree, debug_dirname); | |
10909 | dwp_name = xstrprintf ("%s%s%s.dwp", debug_dirname, | |
10910 | SLASH_STRING, backlink_basename); | |
10911 | } | |
10912 | else | |
10913 | dwp_name = xstrprintf ("%s.dwp", objfile->original_name); | |
10914 | make_cleanup (xfree, dwp_name); | |
80626a55 | 10915 | |
192b62ce | 10916 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwp_name)); |
82bf32bc JK |
10917 | if (dbfd == NULL |
10918 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
10919 | { | |
10920 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
10921 | dwp_name = xstrprintf ("%s.dwp", objfile_name (objfile)); | |
10922 | make_cleanup (xfree, dwp_name); | |
10923 | dbfd = open_dwp_file (dwp_name); | |
10924 | } | |
10925 | ||
80626a55 DE |
10926 | if (dbfd == NULL) |
10927 | { | |
b4f54984 | 10928 | if (dwarf_read_debug) |
80626a55 DE |
10929 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); |
10930 | do_cleanups (cleanups); | |
10931 | return NULL; | |
3019eac3 | 10932 | } |
80626a55 | 10933 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
192b62ce TT |
10934 | dwp_file->name = bfd_get_filename (dbfd.get ()); |
10935 | dwp_file->dbfd = dbfd.release (); | |
80626a55 | 10936 | do_cleanups (cleanups); |
c906108c | 10937 | |
80626a55 | 10938 | /* +1: section 0 is unused */ |
192b62ce | 10939 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
10940 | dwp_file->elf_sections = |
10941 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
10942 | dwp_file->num_sections, asection *); | |
10943 | ||
192b62ce TT |
10944 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_common_dwp_sections, |
10945 | dwp_file); | |
80626a55 DE |
10946 | |
10947 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
10948 | ||
10949 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
10950 | ||
73869dc2 DE |
10951 | /* The DWP file version is stored in the hash table. Oh well. */ |
10952 | if (dwp_file->cus->version != dwp_file->tus->version) | |
10953 | { | |
10954 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 10955 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 10956 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
10957 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
10958 | " TU version %s [in DWP file %s]"), | |
10959 | pulongest (dwp_file->cus->version), | |
10960 | pulongest (dwp_file->tus->version), dwp_name); | |
73869dc2 DE |
10961 | } |
10962 | dwp_file->version = dwp_file->cus->version; | |
10963 | ||
10964 | if (dwp_file->version == 2) | |
192b62ce TT |
10965 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_v2_dwp_sections, |
10966 | dwp_file); | |
73869dc2 | 10967 | |
19ac8c2e DE |
10968 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
10969 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 10970 | |
b4f54984 | 10971 | if (dwarf_read_debug) |
80626a55 DE |
10972 | { |
10973 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
10974 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
10975 | " %s CUs, %s TUs\n", |
10976 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
10977 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
10978 | } |
10979 | ||
10980 | return dwp_file; | |
3019eac3 | 10981 | } |
c906108c | 10982 | |
ab5088bf DE |
10983 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
10984 | ||
10985 | static struct dwp_file * | |
10986 | get_dwp_file (void) | |
10987 | { | |
10988 | if (! dwarf2_per_objfile->dwp_checked) | |
10989 | { | |
10990 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
10991 | dwarf2_per_objfile->dwp_checked = 1; | |
10992 | } | |
10993 | return dwarf2_per_objfile->dwp_file; | |
10994 | } | |
10995 | ||
80626a55 DE |
10996 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
10997 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
10998 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 10999 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
11000 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
11001 | ||
11002 | This is called, for example, when wanting to read a variable with a | |
11003 | complex location. Therefore we don't want to do file i/o for every call. | |
11004 | Therefore we don't want to look for a DWO file on every call. | |
11005 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
11006 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
11007 | for a DWO file. | |
11008 | ||
1c658ad5 | 11009 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 11010 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 11011 | |
3019eac3 | 11012 | static struct dwo_unit * |
80626a55 DE |
11013 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
11014 | const char *dwo_name, const char *comp_dir, | |
11015 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
11016 | { |
11017 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
11018 | const char *kind = is_debug_types ? "TU" : "CU"; |
11019 | void **dwo_file_slot; | |
3019eac3 | 11020 | struct dwo_file *dwo_file; |
80626a55 | 11021 | struct dwp_file *dwp_file; |
cb1df416 | 11022 | |
6a506a2d DE |
11023 | /* First see if there's a DWP file. |
11024 | If we have a DWP file but didn't find the DWO inside it, don't | |
11025 | look for the original DWO file. It makes gdb behave differently | |
11026 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 11027 | |
ab5088bf | 11028 | dwp_file = get_dwp_file (); |
80626a55 | 11029 | if (dwp_file != NULL) |
cf2c3c16 | 11030 | { |
80626a55 DE |
11031 | const struct dwp_hash_table *dwp_htab = |
11032 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
11033 | ||
11034 | if (dwp_htab != NULL) | |
11035 | { | |
11036 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
11037 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
11038 | signature, is_debug_types); | |
80626a55 DE |
11039 | |
11040 | if (dwo_cutu != NULL) | |
11041 | { | |
b4f54984 | 11042 | if (dwarf_read_debug) |
80626a55 DE |
11043 | { |
11044 | fprintf_unfiltered (gdb_stdlog, | |
11045 | "Virtual DWO %s %s found: @%s\n", | |
11046 | kind, hex_string (signature), | |
11047 | host_address_to_string (dwo_cutu)); | |
11048 | } | |
11049 | return dwo_cutu; | |
11050 | } | |
11051 | } | |
11052 | } | |
6a506a2d | 11053 | else |
80626a55 | 11054 | { |
6a506a2d | 11055 | /* No DWP file, look for the DWO file. */ |
80626a55 | 11056 | |
6a506a2d DE |
11057 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
11058 | if (*dwo_file_slot == NULL) | |
80626a55 | 11059 | { |
6a506a2d DE |
11060 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
11061 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 11062 | } |
6a506a2d | 11063 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 11064 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 11065 | |
6a506a2d | 11066 | if (dwo_file != NULL) |
19c3d4c9 | 11067 | { |
6a506a2d DE |
11068 | struct dwo_unit *dwo_cutu = NULL; |
11069 | ||
11070 | if (is_debug_types && dwo_file->tus) | |
11071 | { | |
11072 | struct dwo_unit find_dwo_cutu; | |
11073 | ||
11074 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
11075 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
11076 | dwo_cutu |
11077 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d DE |
11078 | } |
11079 | else if (!is_debug_types && dwo_file->cu) | |
80626a55 | 11080 | { |
6a506a2d DE |
11081 | if (signature == dwo_file->cu->signature) |
11082 | dwo_cutu = dwo_file->cu; | |
11083 | } | |
11084 | ||
11085 | if (dwo_cutu != NULL) | |
11086 | { | |
b4f54984 | 11087 | if (dwarf_read_debug) |
6a506a2d DE |
11088 | { |
11089 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
11090 | kind, dwo_name, hex_string (signature), | |
11091 | host_address_to_string (dwo_cutu)); | |
11092 | } | |
11093 | return dwo_cutu; | |
80626a55 DE |
11094 | } |
11095 | } | |
2e276125 | 11096 | } |
9cdd5dbd | 11097 | |
80626a55 DE |
11098 | /* We didn't find it. This could mean a dwo_id mismatch, or |
11099 | someone deleted the DWO/DWP file, or the search path isn't set up | |
11100 | correctly to find the file. */ | |
11101 | ||
b4f54984 | 11102 | if (dwarf_read_debug) |
80626a55 DE |
11103 | { |
11104 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
11105 | kind, dwo_name, hex_string (signature)); | |
11106 | } | |
3019eac3 | 11107 | |
6656a72d DE |
11108 | /* This is a warning and not a complaint because it can be caused by |
11109 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
11110 | { |
11111 | /* Print the name of the DWP file if we looked there, helps the user | |
11112 | better diagnose the problem. */ | |
11113 | char *dwp_text = NULL; | |
11114 | struct cleanup *cleanups; | |
11115 | ||
11116 | if (dwp_file != NULL) | |
11117 | dwp_text = xstrprintf (" [in DWP file %s]", lbasename (dwp_file->name)); | |
11118 | cleanups = make_cleanup (xfree, dwp_text); | |
11119 | ||
11120 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset 0x%x" | |
11121 | " [in module %s]"), | |
11122 | kind, dwo_name, hex_string (signature), | |
11123 | dwp_text != NULL ? dwp_text : "", | |
11124 | this_unit->is_debug_types ? "TU" : "CU", | |
11125 | this_unit->offset.sect_off, objfile_name (objfile)); | |
11126 | ||
11127 | do_cleanups (cleanups); | |
11128 | } | |
3019eac3 | 11129 | return NULL; |
5fb290d7 DJ |
11130 | } |
11131 | ||
80626a55 DE |
11132 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
11133 | See lookup_dwo_cutu_unit for details. */ | |
11134 | ||
11135 | static struct dwo_unit * | |
11136 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
11137 | const char *dwo_name, const char *comp_dir, | |
11138 | ULONGEST signature) | |
11139 | { | |
11140 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
11141 | } | |
11142 | ||
11143 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
11144 | See lookup_dwo_cutu_unit for details. */ | |
11145 | ||
11146 | static struct dwo_unit * | |
11147 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
11148 | const char *dwo_name, const char *comp_dir) | |
11149 | { | |
11150 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
11151 | } | |
11152 | ||
89e63ee4 DE |
11153 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
11154 | ||
11155 | static int | |
11156 | queue_and_load_dwo_tu (void **slot, void *info) | |
11157 | { | |
11158 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
11159 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
11160 | ULONGEST signature = dwo_unit->signature; | |
11161 | struct signatured_type *sig_type = | |
11162 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
11163 | ||
11164 | if (sig_type != NULL) | |
11165 | { | |
11166 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
11167 | ||
11168 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
11169 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
11170 | while processing PER_CU. */ | |
11171 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
11172 | load_full_type_unit (sig_cu); | |
11173 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
11174 | } | |
11175 | ||
11176 | return 1; | |
11177 | } | |
11178 | ||
11179 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
11180 | The DWO may have the only definition of the type, though it may not be | |
11181 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
11182 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
11183 | ||
11184 | static void | |
11185 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
11186 | { | |
11187 | struct dwo_unit *dwo_unit; | |
11188 | struct dwo_file *dwo_file; | |
11189 | ||
11190 | gdb_assert (!per_cu->is_debug_types); | |
11191 | gdb_assert (get_dwp_file () == NULL); | |
11192 | gdb_assert (per_cu->cu != NULL); | |
11193 | ||
11194 | dwo_unit = per_cu->cu->dwo_unit; | |
11195 | gdb_assert (dwo_unit != NULL); | |
11196 | ||
11197 | dwo_file = dwo_unit->dwo_file; | |
11198 | if (dwo_file->tus != NULL) | |
11199 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
11200 | } | |
11201 | ||
3019eac3 DE |
11202 | /* Free all resources associated with DWO_FILE. |
11203 | Close the DWO file and munmap the sections. | |
11204 | All memory should be on the objfile obstack. */ | |
348e048f DE |
11205 | |
11206 | static void | |
3019eac3 | 11207 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 11208 | { |
348e048f | 11209 | |
5c6fa7ab | 11210 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 11211 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 11212 | |
3019eac3 DE |
11213 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
11214 | } | |
348e048f | 11215 | |
3019eac3 | 11216 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 11217 | |
3019eac3 DE |
11218 | static void |
11219 | free_dwo_file_cleanup (void *arg) | |
11220 | { | |
11221 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
11222 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 11223 | |
3019eac3 DE |
11224 | free_dwo_file (dwo_file, objfile); |
11225 | } | |
348e048f | 11226 | |
3019eac3 | 11227 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 11228 | |
3019eac3 DE |
11229 | static int |
11230 | free_dwo_file_from_slot (void **slot, void *info) | |
11231 | { | |
11232 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
11233 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 11234 | |
3019eac3 | 11235 | free_dwo_file (dwo_file, objfile); |
348e048f | 11236 | |
3019eac3 DE |
11237 | return 1; |
11238 | } | |
348e048f | 11239 | |
3019eac3 | 11240 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 11241 | |
3019eac3 DE |
11242 | static void |
11243 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
11244 | { | |
11245 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 11246 | } |
3019eac3 DE |
11247 | \f |
11248 | /* Read in various DIEs. */ | |
348e048f | 11249 | |
d389af10 JK |
11250 | /* qsort helper for inherit_abstract_dies. */ |
11251 | ||
11252 | static int | |
11253 | unsigned_int_compar (const void *ap, const void *bp) | |
11254 | { | |
11255 | unsigned int a = *(unsigned int *) ap; | |
11256 | unsigned int b = *(unsigned int *) bp; | |
11257 | ||
11258 | return (a > b) - (b > a); | |
11259 | } | |
11260 | ||
11261 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
11262 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
11263 | already referenced by DW_AT_abstract_origin from the children of the | |
11264 | current DIE. */ | |
d389af10 JK |
11265 | |
11266 | static void | |
11267 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
11268 | { | |
11269 | struct die_info *child_die; | |
11270 | unsigned die_children_count; | |
11271 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
11272 | sect_offset *offsets; |
11273 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
11274 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
11275 | struct die_info *origin_die; | |
11276 | /* Iterator of the ORIGIN_DIE children. */ | |
11277 | struct die_info *origin_child_die; | |
11278 | struct cleanup *cleanups; | |
11279 | struct attribute *attr; | |
cd02d79d PA |
11280 | struct dwarf2_cu *origin_cu; |
11281 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
11282 | |
11283 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11284 | if (!attr) | |
11285 | return; | |
11286 | ||
cd02d79d PA |
11287 | /* Note that following die references may follow to a die in a |
11288 | different cu. */ | |
11289 | ||
11290 | origin_cu = cu; | |
11291 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
11292 | ||
11293 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
11294 | symbols in. */ | |
11295 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
11296 | origin_cu->list_in_scope = cu->list_in_scope; | |
11297 | ||
edb3359d DJ |
11298 | if (die->tag != origin_die->tag |
11299 | && !(die->tag == DW_TAG_inlined_subroutine | |
11300 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11301 | complaint (&symfile_complaints, |
11302 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 11303 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
11304 | |
11305 | child_die = die->child; | |
11306 | die_children_count = 0; | |
11307 | while (child_die && child_die->tag) | |
11308 | { | |
11309 | child_die = sibling_die (child_die); | |
11310 | die_children_count++; | |
11311 | } | |
8d749320 | 11312 | offsets = XNEWVEC (sect_offset, die_children_count); |
d389af10 JK |
11313 | cleanups = make_cleanup (xfree, offsets); |
11314 | ||
11315 | offsets_end = offsets; | |
3ea89b92 PMR |
11316 | for (child_die = die->child; |
11317 | child_die && child_die->tag; | |
11318 | child_die = sibling_die (child_die)) | |
11319 | { | |
11320 | struct die_info *child_origin_die; | |
11321 | struct dwarf2_cu *child_origin_cu; | |
11322 | ||
11323 | /* We are trying to process concrete instance entries: | |
216f72a1 | 11324 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
11325 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
11326 | present in the abstract instance but not referenced in the concrete | |
11327 | one. */ | |
216f72a1 JK |
11328 | if (child_die->tag == DW_TAG_call_site |
11329 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
11330 | continue; |
11331 | ||
c38f313d DJ |
11332 | /* For each CHILD_DIE, find the corresponding child of |
11333 | ORIGIN_DIE. If there is more than one layer of | |
11334 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
11335 | but GCC versions at least through 4.4 generate this (GCC PR | |
11336 | 40573). */ | |
3ea89b92 PMR |
11337 | child_origin_die = child_die; |
11338 | child_origin_cu = cu; | |
c38f313d DJ |
11339 | while (1) |
11340 | { | |
cd02d79d PA |
11341 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
11342 | child_origin_cu); | |
c38f313d DJ |
11343 | if (attr == NULL) |
11344 | break; | |
cd02d79d PA |
11345 | child_origin_die = follow_die_ref (child_origin_die, attr, |
11346 | &child_origin_cu); | |
c38f313d DJ |
11347 | } |
11348 | ||
d389af10 JK |
11349 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
11350 | counterpart may exist. */ | |
c38f313d | 11351 | if (child_origin_die != child_die) |
d389af10 | 11352 | { |
edb3359d DJ |
11353 | if (child_die->tag != child_origin_die->tag |
11354 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
11355 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11356 | complaint (&symfile_complaints, |
11357 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11358 | "different tags"), child_die->offset.sect_off, |
11359 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11360 | if (child_origin_die->parent != origin_die) |
11361 | complaint (&symfile_complaints, | |
11362 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11363 | "different parents"), child_die->offset.sect_off, |
11364 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11365 | else |
11366 | *offsets_end++ = child_origin_die->offset; | |
d389af10 | 11367 | } |
d389af10 JK |
11368 | } |
11369 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
11370 | unsigned_int_compar); | |
11371 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 11372 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
11373 | complaint (&symfile_complaints, |
11374 | _("Multiple children of DIE 0x%x refer " | |
11375 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 11376 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
11377 | |
11378 | offsetp = offsets; | |
11379 | origin_child_die = origin_die->child; | |
11380 | while (origin_child_die && origin_child_die->tag) | |
11381 | { | |
11382 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
11383 | while (offsetp < offsets_end |
11384 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 11385 | offsetp++; |
b64f50a1 JK |
11386 | if (offsetp >= offsets_end |
11387 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 | 11388 | { |
adde2bff DE |
11389 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
11390 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
11391 | This can happen with mutually referenced abstract_origins. | |
11392 | PR 16581. */ | |
11393 | if (!origin_child_die->in_process) | |
11394 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
11395 | } |
11396 | origin_child_die = sibling_die (origin_child_die); | |
11397 | } | |
cd02d79d | 11398 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
11399 | |
11400 | do_cleanups (cleanups); | |
11401 | } | |
11402 | ||
c906108c | 11403 | static void |
e7c27a73 | 11404 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11405 | { |
e7c27a73 | 11406 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11407 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11408 | struct context_stack *newobj; |
c906108c SS |
11409 | CORE_ADDR lowpc; |
11410 | CORE_ADDR highpc; | |
11411 | struct die_info *child_die; | |
edb3359d | 11412 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 11413 | const char *name; |
e142c38c | 11414 | CORE_ADDR baseaddr; |
801e3a5b | 11415 | struct block *block; |
edb3359d | 11416 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
11417 | VEC (symbolp) *template_args = NULL; |
11418 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
11419 | |
11420 | if (inlined_func) | |
11421 | { | |
11422 | /* If we do not have call site information, we can't show the | |
11423 | caller of this inlined function. That's too confusing, so | |
11424 | only use the scope for local variables. */ | |
11425 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
11426 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
11427 | if (call_line == NULL || call_file == NULL) | |
11428 | { | |
11429 | read_lexical_block_scope (die, cu); | |
11430 | return; | |
11431 | } | |
11432 | } | |
c906108c | 11433 | |
e142c38c DJ |
11434 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
11435 | ||
94af9270 | 11436 | name = dwarf2_name (die, cu); |
c906108c | 11437 | |
e8d05480 JB |
11438 | /* Ignore functions with missing or empty names. These are actually |
11439 | illegal according to the DWARF standard. */ | |
11440 | if (name == NULL) | |
11441 | { | |
11442 | complaint (&symfile_complaints, | |
b64f50a1 JK |
11443 | _("missing name for subprogram DIE at %d"), |
11444 | die->offset.sect_off); | |
e8d05480 JB |
11445 | return; |
11446 | } | |
11447 | ||
11448 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 11449 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 11450 | <= PC_BOUNDS_INVALID) |
e8d05480 | 11451 | { |
ae4d0c03 PM |
11452 | attr = dwarf2_attr (die, DW_AT_external, cu); |
11453 | if (!attr || !DW_UNSND (attr)) | |
11454 | complaint (&symfile_complaints, | |
3e43a32a MS |
11455 | _("cannot get low and high bounds " |
11456 | "for subprogram DIE at %d"), | |
b64f50a1 | 11457 | die->offset.sect_off); |
e8d05480 JB |
11458 | return; |
11459 | } | |
c906108c | 11460 | |
3e29f34a MR |
11461 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11462 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 11463 | |
34eaf542 TT |
11464 | /* If we have any template arguments, then we must allocate a |
11465 | different sort of symbol. */ | |
11466 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
11467 | { | |
11468 | if (child_die->tag == DW_TAG_template_type_param | |
11469 | || child_die->tag == DW_TAG_template_value_param) | |
11470 | { | |
e623cf5d | 11471 | templ_func = allocate_template_symbol (objfile); |
34eaf542 TT |
11472 | templ_func->base.is_cplus_template_function = 1; |
11473 | break; | |
11474 | } | |
11475 | } | |
11476 | ||
fe978cb0 PA |
11477 | newobj = push_context (0, lowpc); |
11478 | newobj->name = new_symbol_full (die, read_type_die (die, cu), cu, | |
34eaf542 | 11479 | (struct symbol *) templ_func); |
4c2df51b | 11480 | |
4cecd739 DJ |
11481 | /* If there is a location expression for DW_AT_frame_base, record |
11482 | it. */ | |
e142c38c | 11483 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 11484 | if (attr) |
fe978cb0 | 11485 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 11486 | |
63e43d3a PMR |
11487 | /* If there is a location for the static link, record it. */ |
11488 | newobj->static_link = NULL; | |
11489 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
11490 | if (attr) | |
11491 | { | |
224c3ddb SM |
11492 | newobj->static_link |
11493 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
11494 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
11495 | } | |
11496 | ||
e142c38c | 11497 | cu->list_in_scope = &local_symbols; |
c906108c | 11498 | |
639d11d3 | 11499 | if (die->child != NULL) |
c906108c | 11500 | { |
639d11d3 | 11501 | child_die = die->child; |
c906108c SS |
11502 | while (child_die && child_die->tag) |
11503 | { | |
34eaf542 TT |
11504 | if (child_die->tag == DW_TAG_template_type_param |
11505 | || child_die->tag == DW_TAG_template_value_param) | |
11506 | { | |
11507 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
11508 | ||
f1078f66 DJ |
11509 | if (arg != NULL) |
11510 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
11511 | } |
11512 | else | |
11513 | process_die (child_die, cu); | |
c906108c SS |
11514 | child_die = sibling_die (child_die); |
11515 | } | |
11516 | } | |
11517 | ||
d389af10 JK |
11518 | inherit_abstract_dies (die, cu); |
11519 | ||
4a811a97 UW |
11520 | /* If we have a DW_AT_specification, we might need to import using |
11521 | directives from the context of the specification DIE. See the | |
11522 | comment in determine_prefix. */ | |
11523 | if (cu->language == language_cplus | |
11524 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
11525 | { | |
11526 | struct dwarf2_cu *spec_cu = cu; | |
11527 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
11528 | ||
11529 | while (spec_die) | |
11530 | { | |
11531 | child_die = spec_die->child; | |
11532 | while (child_die && child_die->tag) | |
11533 | { | |
11534 | if (child_die->tag == DW_TAG_imported_module) | |
11535 | process_die (child_die, spec_cu); | |
11536 | child_die = sibling_die (child_die); | |
11537 | } | |
11538 | ||
11539 | /* In some cases, GCC generates specification DIEs that | |
11540 | themselves contain DW_AT_specification attributes. */ | |
11541 | spec_die = die_specification (spec_die, &spec_cu); | |
11542 | } | |
11543 | } | |
11544 | ||
fe978cb0 | 11545 | newobj = pop_context (); |
c906108c | 11546 | /* Make a block for the local symbols within. */ |
fe978cb0 | 11547 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
63e43d3a | 11548 | newobj->static_link, lowpc, highpc); |
801e3a5b | 11549 | |
df8a16a1 | 11550 | /* For C++, set the block's scope. */ |
45280282 IB |
11551 | if ((cu->language == language_cplus |
11552 | || cu->language == language_fortran | |
c44af4eb TT |
11553 | || cu->language == language_d |
11554 | || cu->language == language_rust) | |
4d4ec4e5 | 11555 | && cu->processing_has_namespace_info) |
195a3f6c TT |
11556 | block_set_scope (block, determine_prefix (die, cu), |
11557 | &objfile->objfile_obstack); | |
df8a16a1 | 11558 | |
801e3a5b JB |
11559 | /* If we have address ranges, record them. */ |
11560 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 11561 | |
fe978cb0 | 11562 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 11563 | |
34eaf542 TT |
11564 | /* Attach template arguments to function. */ |
11565 | if (! VEC_empty (symbolp, template_args)) | |
11566 | { | |
11567 | gdb_assert (templ_func != NULL); | |
11568 | ||
11569 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
11570 | templ_func->template_arguments | |
8d749320 SM |
11571 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
11572 | templ_func->n_template_arguments); | |
34eaf542 TT |
11573 | memcpy (templ_func->template_arguments, |
11574 | VEC_address (symbolp, template_args), | |
11575 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
11576 | VEC_free (symbolp, template_args); | |
11577 | } | |
11578 | ||
208d8187 JB |
11579 | /* In C++, we can have functions nested inside functions (e.g., when |
11580 | a function declares a class that has methods). This means that | |
11581 | when we finish processing a function scope, we may need to go | |
11582 | back to building a containing block's symbol lists. */ | |
fe978cb0 | 11583 | local_symbols = newobj->locals; |
22cee43f | 11584 | local_using_directives = newobj->local_using_directives; |
208d8187 | 11585 | |
921e78cf JB |
11586 | /* If we've finished processing a top-level function, subsequent |
11587 | symbols go in the file symbol list. */ | |
11588 | if (outermost_context_p ()) | |
e142c38c | 11589 | cu->list_in_scope = &file_symbols; |
c906108c SS |
11590 | } |
11591 | ||
11592 | /* Process all the DIES contained within a lexical block scope. Start | |
11593 | a new scope, process the dies, and then close the scope. */ | |
11594 | ||
11595 | static void | |
e7c27a73 | 11596 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11597 | { |
e7c27a73 | 11598 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11599 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11600 | struct context_stack *newobj; |
c906108c SS |
11601 | CORE_ADDR lowpc, highpc; |
11602 | struct die_info *child_die; | |
e142c38c DJ |
11603 | CORE_ADDR baseaddr; |
11604 | ||
11605 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
11606 | |
11607 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
11608 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
11609 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 11610 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 11611 | describe ranges. */ |
e385593e JK |
11612 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
11613 | { | |
11614 | case PC_BOUNDS_NOT_PRESENT: | |
11615 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
11616 | there was no wrapping by that DW_TAG_lexical_block. | |
11617 | GCC does no longer produces such DWARF since GCC r224161. */ | |
11618 | for (child_die = die->child; | |
11619 | child_die != NULL && child_die->tag; | |
11620 | child_die = sibling_die (child_die)) | |
11621 | process_die (child_die, cu); | |
11622 | return; | |
11623 | case PC_BOUNDS_INVALID: | |
11624 | return; | |
11625 | } | |
3e29f34a MR |
11626 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11627 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
11628 | |
11629 | push_context (0, lowpc); | |
639d11d3 | 11630 | if (die->child != NULL) |
c906108c | 11631 | { |
639d11d3 | 11632 | child_die = die->child; |
c906108c SS |
11633 | while (child_die && child_die->tag) |
11634 | { | |
e7c27a73 | 11635 | process_die (child_die, cu); |
c906108c SS |
11636 | child_die = sibling_die (child_die); |
11637 | } | |
11638 | } | |
3ea89b92 | 11639 | inherit_abstract_dies (die, cu); |
fe978cb0 | 11640 | newobj = pop_context (); |
c906108c | 11641 | |
22cee43f | 11642 | if (local_symbols != NULL || local_using_directives != NULL) |
c906108c | 11643 | { |
801e3a5b | 11644 | struct block *block |
63e43d3a | 11645 | = finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 11646 | newobj->start_addr, highpc); |
801e3a5b JB |
11647 | |
11648 | /* Note that recording ranges after traversing children, as we | |
11649 | do here, means that recording a parent's ranges entails | |
11650 | walking across all its children's ranges as they appear in | |
11651 | the address map, which is quadratic behavior. | |
11652 | ||
11653 | It would be nicer to record the parent's ranges before | |
11654 | traversing its children, simply overriding whatever you find | |
11655 | there. But since we don't even decide whether to create a | |
11656 | block until after we've traversed its children, that's hard | |
11657 | to do. */ | |
11658 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 11659 | } |
fe978cb0 | 11660 | local_symbols = newobj->locals; |
22cee43f | 11661 | local_using_directives = newobj->local_using_directives; |
c906108c SS |
11662 | } |
11663 | ||
216f72a1 | 11664 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
11665 | |
11666 | static void | |
11667 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11668 | { | |
11669 | struct objfile *objfile = cu->objfile; | |
11670 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11671 | CORE_ADDR pc, baseaddr; | |
11672 | struct attribute *attr; | |
11673 | struct call_site *call_site, call_site_local; | |
11674 | void **slot; | |
11675 | int nparams; | |
11676 | struct die_info *child_die; | |
11677 | ||
11678 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
11679 | ||
216f72a1 JK |
11680 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
11681 | if (attr == NULL) | |
11682 | { | |
11683 | /* This was a pre-DWARF-5 GNU extension alias | |
11684 | for DW_AT_call_return_pc. */ | |
11685 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
11686 | } | |
96408a79 SA |
11687 | if (!attr) |
11688 | { | |
11689 | complaint (&symfile_complaints, | |
216f72a1 | 11690 | _("missing DW_AT_call_return_pc for DW_TAG_call_site " |
96408a79 | 11691 | "DIE 0x%x [in module %s]"), |
4262abfb | 11692 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11693 | return; |
11694 | } | |
31aa7e4e | 11695 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 11696 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
11697 | |
11698 | if (cu->call_site_htab == NULL) | |
11699 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
11700 | NULL, &objfile->objfile_obstack, | |
11701 | hashtab_obstack_allocate, NULL); | |
11702 | call_site_local.pc = pc; | |
11703 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
11704 | if (*slot != NULL) | |
11705 | { | |
11706 | complaint (&symfile_complaints, | |
216f72a1 | 11707 | _("Duplicate PC %s for DW_TAG_call_site " |
96408a79 | 11708 | "DIE 0x%x [in module %s]"), |
4262abfb JK |
11709 | paddress (gdbarch, pc), die->offset.sect_off, |
11710 | objfile_name (objfile)); | |
96408a79 SA |
11711 | return; |
11712 | } | |
11713 | ||
11714 | /* Count parameters at the caller. */ | |
11715 | ||
11716 | nparams = 0; | |
11717 | for (child_die = die->child; child_die && child_die->tag; | |
11718 | child_die = sibling_die (child_die)) | |
11719 | { | |
216f72a1 JK |
11720 | if (child_die->tag != DW_TAG_call_site_parameter |
11721 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
11722 | { |
11723 | complaint (&symfile_complaints, | |
216f72a1 JK |
11724 | _("Tag %d is not DW_TAG_call_site_parameter in " |
11725 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
4262abfb JK |
11726 | child_die->tag, child_die->offset.sect_off, |
11727 | objfile_name (objfile)); | |
96408a79 SA |
11728 | continue; |
11729 | } | |
11730 | ||
11731 | nparams++; | |
11732 | } | |
11733 | ||
224c3ddb SM |
11734 | call_site |
11735 | = ((struct call_site *) | |
11736 | obstack_alloc (&objfile->objfile_obstack, | |
11737 | sizeof (*call_site) | |
11738 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
11739 | *slot = call_site; |
11740 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
11741 | call_site->pc = pc; | |
11742 | ||
216f72a1 JK |
11743 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
11744 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
11745 | { |
11746 | struct die_info *func_die; | |
11747 | ||
11748 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
11749 | for (func_die = die->parent; | |
11750 | func_die && func_die->tag != DW_TAG_subprogram | |
11751 | && func_die->tag != DW_TAG_subroutine_type; | |
11752 | func_die = func_die->parent); | |
11753 | ||
216f72a1 JK |
11754 | /* DW_AT_call_all_calls is a superset |
11755 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 11756 | if (func_die |
216f72a1 | 11757 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 11758 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 11759 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
11760 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
11761 | { | |
11762 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
11763 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
11764 | both the initial caller containing the real return address PC and | |
11765 | the final callee containing the current PC of a chain of tail | |
11766 | calls do not need to have the tail call list complete. But any | |
11767 | function candidate for a virtual tail call frame searched via | |
11768 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
11769 | determined unambiguously. */ | |
11770 | } | |
11771 | else | |
11772 | { | |
11773 | struct type *func_type = NULL; | |
11774 | ||
11775 | if (func_die) | |
11776 | func_type = get_die_type (func_die, cu); | |
11777 | if (func_type != NULL) | |
11778 | { | |
11779 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
11780 | ||
11781 | /* Enlist this call site to the function. */ | |
11782 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
11783 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
11784 | } | |
11785 | else | |
11786 | complaint (&symfile_complaints, | |
216f72a1 | 11787 | _("Cannot find function owning DW_TAG_call_site " |
96408a79 | 11788 | "DIE 0x%x [in module %s]"), |
4262abfb | 11789 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11790 | } |
11791 | } | |
11792 | ||
216f72a1 JK |
11793 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
11794 | if (attr == NULL) | |
11795 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
11796 | if (attr == NULL) | |
11797 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 11798 | if (attr == NULL) |
216f72a1 JK |
11799 | { |
11800 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
11801 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11802 | } | |
96408a79 SA |
11803 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
11804 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
11805 | /* Keep NULL DWARF_BLOCK. */; | |
11806 | else if (attr_form_is_block (attr)) | |
11807 | { | |
11808 | struct dwarf2_locexpr_baton *dlbaton; | |
11809 | ||
8d749320 | 11810 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
11811 | dlbaton->data = DW_BLOCK (attr)->data; |
11812 | dlbaton->size = DW_BLOCK (attr)->size; | |
11813 | dlbaton->per_cu = cu->per_cu; | |
11814 | ||
11815 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
11816 | } | |
7771576e | 11817 | else if (attr_form_is_ref (attr)) |
96408a79 | 11818 | { |
96408a79 SA |
11819 | struct dwarf2_cu *target_cu = cu; |
11820 | struct die_info *target_die; | |
11821 | ||
ac9ec31b | 11822 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
11823 | gdb_assert (target_cu->objfile == objfile); |
11824 | if (die_is_declaration (target_die, target_cu)) | |
11825 | { | |
7d45c7c3 | 11826 | const char *target_physname; |
9112db09 JK |
11827 | |
11828 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
7d45c7c3 KB |
11829 | target_physname = dwarf2_string_attr (target_die, |
11830 | DW_AT_linkage_name, | |
11831 | target_cu); | |
11832 | if (target_physname == NULL) | |
11833 | target_physname = dwarf2_string_attr (target_die, | |
11834 | DW_AT_MIPS_linkage_name, | |
11835 | target_cu); | |
11836 | if (target_physname == NULL) | |
9112db09 | 11837 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 SA |
11838 | if (target_physname == NULL) |
11839 | complaint (&symfile_complaints, | |
216f72a1 | 11840 | _("DW_AT_call_target target DIE has invalid " |
96408a79 | 11841 | "physname, for referencing DIE 0x%x [in module %s]"), |
4262abfb | 11842 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11843 | else |
7d455152 | 11844 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
11845 | } |
11846 | else | |
11847 | { | |
11848 | CORE_ADDR lowpc; | |
11849 | ||
11850 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 11851 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 11852 | <= PC_BOUNDS_INVALID) |
96408a79 | 11853 | complaint (&symfile_complaints, |
216f72a1 | 11854 | _("DW_AT_call_target target DIE has invalid " |
96408a79 | 11855 | "low pc, for referencing DIE 0x%x [in module %s]"), |
4262abfb | 11856 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11857 | else |
3e29f34a MR |
11858 | { |
11859 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
11860 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
11861 | } | |
96408a79 SA |
11862 | } |
11863 | } | |
11864 | else | |
11865 | complaint (&symfile_complaints, | |
216f72a1 | 11866 | _("DW_TAG_call_site DW_AT_call_target is neither " |
96408a79 | 11867 | "block nor reference, for DIE 0x%x [in module %s]"), |
4262abfb | 11868 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11869 | |
11870 | call_site->per_cu = cu->per_cu; | |
11871 | ||
11872 | for (child_die = die->child; | |
11873 | child_die && child_die->tag; | |
11874 | child_die = sibling_die (child_die)) | |
11875 | { | |
96408a79 | 11876 | struct call_site_parameter *parameter; |
1788b2d3 | 11877 | struct attribute *loc, *origin; |
96408a79 | 11878 | |
216f72a1 JK |
11879 | if (child_die->tag != DW_TAG_call_site_parameter |
11880 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
11881 | { |
11882 | /* Already printed the complaint above. */ | |
11883 | continue; | |
11884 | } | |
11885 | ||
11886 | gdb_assert (call_site->parameter_count < nparams); | |
11887 | parameter = &call_site->parameter[call_site->parameter_count]; | |
11888 | ||
1788b2d3 JK |
11889 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
11890 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 11891 | register is contained in DW_AT_call_value. */ |
96408a79 | 11892 | |
24c5c679 | 11893 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
11894 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
11895 | if (origin == NULL) | |
11896 | { | |
11897 | /* This was a pre-DWARF-5 GNU extension alias | |
11898 | for DW_AT_call_parameter. */ | |
11899 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
11900 | } | |
7771576e | 11901 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 JK |
11902 | { |
11903 | sect_offset offset; | |
11904 | ||
11905 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
11906 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
11907 | if (!offset_in_cu_p (&cu->header, offset)) |
11908 | { | |
11909 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
11910 | binding can be done only inside one CU. Such referenced DIE | |
11911 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
11912 | complaint (&symfile_complaints, | |
216f72a1 JK |
11913 | _("DW_AT_call_parameter offset is not in CU for " |
11914 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11915 | child_die->offset.sect_off, objfile_name (objfile)); |
d76b7dbc JK |
11916 | continue; |
11917 | } | |
1788b2d3 JK |
11918 | parameter->u.param_offset.cu_off = (offset.sect_off |
11919 | - cu->header.offset.sect_off); | |
11920 | } | |
11921 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
11922 | { |
11923 | complaint (&symfile_complaints, | |
11924 | _("No DW_FORM_block* DW_AT_location for " | |
216f72a1 | 11925 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), |
4262abfb | 11926 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11927 | continue; |
11928 | } | |
24c5c679 | 11929 | else |
96408a79 | 11930 | { |
24c5c679 JK |
11931 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
11932 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
11933 | if (parameter->u.dwarf_reg != -1) | |
11934 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
11935 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
11936 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
11937 | ¶meter->u.fb_offset)) | |
11938 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
11939 | else | |
11940 | { | |
11941 | complaint (&symfile_complaints, | |
11942 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
11943 | "for DW_FORM_block* DW_AT_location is supported for " | |
216f72a1 | 11944 | "DW_TAG_call_site child DIE 0x%x " |
24c5c679 | 11945 | "[in module %s]"), |
4262abfb | 11946 | child_die->offset.sect_off, objfile_name (objfile)); |
24c5c679 JK |
11947 | continue; |
11948 | } | |
96408a79 SA |
11949 | } |
11950 | ||
216f72a1 JK |
11951 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
11952 | if (attr == NULL) | |
11953 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
11954 | if (!attr_form_is_block (attr)) |
11955 | { | |
11956 | complaint (&symfile_complaints, | |
216f72a1 JK |
11957 | _("No DW_FORM_block* DW_AT_call_value for " |
11958 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11959 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11960 | continue; |
11961 | } | |
11962 | parameter->value = DW_BLOCK (attr)->data; | |
11963 | parameter->value_size = DW_BLOCK (attr)->size; | |
11964 | ||
11965 | /* Parameters are not pre-cleared by memset above. */ | |
11966 | parameter->data_value = NULL; | |
11967 | parameter->data_value_size = 0; | |
11968 | call_site->parameter_count++; | |
11969 | ||
216f72a1 JK |
11970 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
11971 | if (attr == NULL) | |
11972 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
11973 | if (attr) |
11974 | { | |
11975 | if (!attr_form_is_block (attr)) | |
11976 | complaint (&symfile_complaints, | |
216f72a1 JK |
11977 | _("No DW_FORM_block* DW_AT_call_data_value for " |
11978 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11979 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11980 | else |
11981 | { | |
11982 | parameter->data_value = DW_BLOCK (attr)->data; | |
11983 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
11984 | } | |
11985 | } | |
11986 | } | |
11987 | } | |
11988 | ||
43988095 JK |
11989 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
11990 | reading .debug_rnglists. | |
11991 | Callback's type should be: | |
11992 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
11993 | Return true if the attributes are present and valid, otherwise, | |
11994 | return false. */ | |
11995 | ||
11996 | template <typename Callback> | |
11997 | static bool | |
11998 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
11999 | Callback &&callback) | |
12000 | { | |
12001 | struct objfile *objfile = cu->objfile; | |
12002 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
12003 | struct comp_unit_head *cu_header = &cu->header; | |
12004 | bfd *obfd = objfile->obfd; | |
12005 | unsigned int addr_size = cu_header->addr_size; | |
12006 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12007 | /* Base address selection entry. */ | |
12008 | CORE_ADDR base; | |
12009 | int found_base; | |
12010 | unsigned int dummy; | |
12011 | const gdb_byte *buffer; | |
12012 | CORE_ADDR low = 0; | |
12013 | CORE_ADDR high = 0; | |
12014 | CORE_ADDR baseaddr; | |
12015 | bool overflow = false; | |
12016 | ||
12017 | found_base = cu->base_known; | |
12018 | base = cu->base_address; | |
12019 | ||
12020 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
12021 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
12022 | { | |
12023 | complaint (&symfile_complaints, | |
12024 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
12025 | offset); | |
12026 | return false; | |
12027 | } | |
12028 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
12029 | ||
12030 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
12031 | ||
12032 | while (1) | |
12033 | { | |
7814882a JK |
12034 | /* Initialize it due to a false compiler warning. */ |
12035 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
12036 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
12037 | + dwarf2_per_objfile->rnglists.size); | |
12038 | unsigned int bytes_read; | |
12039 | ||
12040 | if (buffer == buf_end) | |
12041 | { | |
12042 | overflow = true; | |
12043 | break; | |
12044 | } | |
12045 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
12046 | switch (rlet) | |
12047 | { | |
12048 | case DW_RLE_end_of_list: | |
12049 | break; | |
12050 | case DW_RLE_base_address: | |
12051 | if (buffer + cu->header.addr_size > buf_end) | |
12052 | { | |
12053 | overflow = true; | |
12054 | break; | |
12055 | } | |
12056 | base = read_address (obfd, buffer, cu, &bytes_read); | |
12057 | found_base = 1; | |
12058 | buffer += bytes_read; | |
12059 | break; | |
12060 | case DW_RLE_start_length: | |
12061 | if (buffer + cu->header.addr_size > buf_end) | |
12062 | { | |
12063 | overflow = true; | |
12064 | break; | |
12065 | } | |
12066 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
12067 | buffer += bytes_read; | |
12068 | range_end = (range_beginning | |
12069 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
12070 | buffer += bytes_read; | |
12071 | if (buffer > buf_end) | |
12072 | { | |
12073 | overflow = true; | |
12074 | break; | |
12075 | } | |
12076 | break; | |
12077 | case DW_RLE_offset_pair: | |
12078 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
12079 | buffer += bytes_read; | |
12080 | if (buffer > buf_end) | |
12081 | { | |
12082 | overflow = true; | |
12083 | break; | |
12084 | } | |
12085 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
12086 | buffer += bytes_read; | |
12087 | if (buffer > buf_end) | |
12088 | { | |
12089 | overflow = true; | |
12090 | break; | |
12091 | } | |
12092 | break; | |
12093 | case DW_RLE_start_end: | |
12094 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
12095 | { | |
12096 | overflow = true; | |
12097 | break; | |
12098 | } | |
12099 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
12100 | buffer += bytes_read; | |
12101 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
12102 | buffer += bytes_read; | |
12103 | break; | |
12104 | default: | |
12105 | complaint (&symfile_complaints, | |
12106 | _("Invalid .debug_rnglists data (no base address)")); | |
12107 | return false; | |
12108 | } | |
12109 | if (rlet == DW_RLE_end_of_list || overflow) | |
12110 | break; | |
12111 | if (rlet == DW_RLE_base_address) | |
12112 | continue; | |
12113 | ||
12114 | if (!found_base) | |
12115 | { | |
12116 | /* We have no valid base address for the ranges | |
12117 | data. */ | |
12118 | complaint (&symfile_complaints, | |
12119 | _("Invalid .debug_rnglists data (no base address)")); | |
12120 | return false; | |
12121 | } | |
12122 | ||
12123 | if (range_beginning > range_end) | |
12124 | { | |
12125 | /* Inverted range entries are invalid. */ | |
12126 | complaint (&symfile_complaints, | |
12127 | _("Invalid .debug_rnglists data (inverted range)")); | |
12128 | return false; | |
12129 | } | |
12130 | ||
12131 | /* Empty range entries have no effect. */ | |
12132 | if (range_beginning == range_end) | |
12133 | continue; | |
12134 | ||
12135 | range_beginning += base; | |
12136 | range_end += base; | |
12137 | ||
12138 | /* A not-uncommon case of bad debug info. | |
12139 | Don't pollute the addrmap with bad data. */ | |
12140 | if (range_beginning + baseaddr == 0 | |
12141 | && !dwarf2_per_objfile->has_section_at_zero) | |
12142 | { | |
12143 | complaint (&symfile_complaints, | |
12144 | _(".debug_rnglists entry has start address of zero" | |
12145 | " [in module %s]"), objfile_name (objfile)); | |
12146 | continue; | |
12147 | } | |
12148 | ||
12149 | callback (range_beginning, range_end); | |
12150 | } | |
12151 | ||
12152 | if (overflow) | |
12153 | { | |
12154 | complaint (&symfile_complaints, | |
12155 | _("Offset %d is not terminated " | |
12156 | "for DW_AT_ranges attribute"), | |
12157 | offset); | |
12158 | return false; | |
12159 | } | |
12160 | ||
12161 | return true; | |
12162 | } | |
12163 | ||
12164 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
12165 | Callback's type should be: | |
12166 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 12167 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 12168 | |
43988095 | 12169 | template <typename Callback> |
43039443 | 12170 | static int |
5f46c5a5 | 12171 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 12172 | Callback &&callback) |
43039443 JK |
12173 | { |
12174 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 12175 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
43039443 JK |
12176 | struct comp_unit_head *cu_header = &cu->header; |
12177 | bfd *obfd = objfile->obfd; | |
12178 | unsigned int addr_size = cu_header->addr_size; | |
12179 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12180 | /* Base address selection entry. */ | |
12181 | CORE_ADDR base; | |
12182 | int found_base; | |
12183 | unsigned int dummy; | |
d521ce57 | 12184 | const gdb_byte *buffer; |
ff013f42 | 12185 | CORE_ADDR baseaddr; |
43039443 | 12186 | |
43988095 JK |
12187 | if (cu_header->version >= 5) |
12188 | return dwarf2_rnglists_process (offset, cu, callback); | |
12189 | ||
d00adf39 DE |
12190 | found_base = cu->base_known; |
12191 | base = cu->base_address; | |
43039443 | 12192 | |
be391dca | 12193 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 12194 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
12195 | { |
12196 | complaint (&symfile_complaints, | |
12197 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
12198 | offset); | |
12199 | return 0; | |
12200 | } | |
dce234bc | 12201 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 12202 | |
e7030f15 | 12203 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 12204 | |
43039443 JK |
12205 | while (1) |
12206 | { | |
12207 | CORE_ADDR range_beginning, range_end; | |
12208 | ||
12209 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
12210 | buffer += addr_size; | |
12211 | range_end = read_address (obfd, buffer, cu, &dummy); | |
12212 | buffer += addr_size; | |
12213 | offset += 2 * addr_size; | |
12214 | ||
12215 | /* An end of list marker is a pair of zero addresses. */ | |
12216 | if (range_beginning == 0 && range_end == 0) | |
12217 | /* Found the end of list entry. */ | |
12218 | break; | |
12219 | ||
12220 | /* Each base address selection entry is a pair of 2 values. | |
12221 | The first is the largest possible address, the second is | |
12222 | the base address. Check for a base address here. */ | |
12223 | if ((range_beginning & mask) == mask) | |
12224 | { | |
28d2bfb9 AB |
12225 | /* If we found the largest possible address, then we already |
12226 | have the base address in range_end. */ | |
12227 | base = range_end; | |
43039443 JK |
12228 | found_base = 1; |
12229 | continue; | |
12230 | } | |
12231 | ||
12232 | if (!found_base) | |
12233 | { | |
12234 | /* We have no valid base address for the ranges | |
12235 | data. */ | |
12236 | complaint (&symfile_complaints, | |
12237 | _("Invalid .debug_ranges data (no base address)")); | |
12238 | return 0; | |
12239 | } | |
12240 | ||
9277c30c UW |
12241 | if (range_beginning > range_end) |
12242 | { | |
12243 | /* Inverted range entries are invalid. */ | |
12244 | complaint (&symfile_complaints, | |
12245 | _("Invalid .debug_ranges data (inverted range)")); | |
12246 | return 0; | |
12247 | } | |
12248 | ||
12249 | /* Empty range entries have no effect. */ | |
12250 | if (range_beginning == range_end) | |
12251 | continue; | |
12252 | ||
43039443 JK |
12253 | range_beginning += base; |
12254 | range_end += base; | |
12255 | ||
01093045 DE |
12256 | /* A not-uncommon case of bad debug info. |
12257 | Don't pollute the addrmap with bad data. */ | |
12258 | if (range_beginning + baseaddr == 0 | |
12259 | && !dwarf2_per_objfile->has_section_at_zero) | |
12260 | { | |
12261 | complaint (&symfile_complaints, | |
12262 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 12263 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
12264 | continue; |
12265 | } | |
12266 | ||
5f46c5a5 JK |
12267 | callback (range_beginning, range_end); |
12268 | } | |
12269 | ||
12270 | return 1; | |
12271 | } | |
12272 | ||
12273 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
12274 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
12275 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
12276 | ||
12277 | static int | |
12278 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
12279 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
12280 | struct partial_symtab *ranges_pst) | |
12281 | { | |
12282 | struct objfile *objfile = cu->objfile; | |
12283 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
12284 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
12285 | SECT_OFF_TEXT (objfile)); | |
12286 | int low_set = 0; | |
12287 | CORE_ADDR low = 0; | |
12288 | CORE_ADDR high = 0; | |
12289 | int retval; | |
12290 | ||
12291 | retval = dwarf2_ranges_process (offset, cu, | |
12292 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
12293 | { | |
9277c30c | 12294 | if (ranges_pst != NULL) |
3e29f34a MR |
12295 | { |
12296 | CORE_ADDR lowpc; | |
12297 | CORE_ADDR highpc; | |
12298 | ||
12299 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
12300 | range_beginning + baseaddr); | |
12301 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
12302 | range_end + baseaddr); | |
12303 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
12304 | ranges_pst); | |
12305 | } | |
ff013f42 | 12306 | |
43039443 JK |
12307 | /* FIXME: This is recording everything as a low-high |
12308 | segment of consecutive addresses. We should have a | |
12309 | data structure for discontiguous block ranges | |
12310 | instead. */ | |
12311 | if (! low_set) | |
12312 | { | |
12313 | low = range_beginning; | |
12314 | high = range_end; | |
12315 | low_set = 1; | |
12316 | } | |
12317 | else | |
12318 | { | |
12319 | if (range_beginning < low) | |
12320 | low = range_beginning; | |
12321 | if (range_end > high) | |
12322 | high = range_end; | |
12323 | } | |
5f46c5a5 JK |
12324 | }); |
12325 | if (!retval) | |
12326 | return 0; | |
43039443 JK |
12327 | |
12328 | if (! low_set) | |
12329 | /* If the first entry is an end-of-list marker, the range | |
12330 | describes an empty scope, i.e. no instructions. */ | |
12331 | return 0; | |
12332 | ||
12333 | if (low_return) | |
12334 | *low_return = low; | |
12335 | if (high_return) | |
12336 | *high_return = high; | |
12337 | return 1; | |
12338 | } | |
12339 | ||
3a2b436a JK |
12340 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
12341 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 12342 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 12343 | |
3a2b436a | 12344 | static enum pc_bounds_kind |
af34e669 | 12345 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
12346 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
12347 | struct partial_symtab *pst) | |
c906108c SS |
12348 | { |
12349 | struct attribute *attr; | |
91da1414 | 12350 | struct attribute *attr_high; |
af34e669 DJ |
12351 | CORE_ADDR low = 0; |
12352 | CORE_ADDR high = 0; | |
e385593e | 12353 | enum pc_bounds_kind ret; |
c906108c | 12354 | |
91da1414 MW |
12355 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12356 | if (attr_high) | |
af34e669 | 12357 | { |
e142c38c | 12358 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 12359 | if (attr) |
91da1414 | 12360 | { |
31aa7e4e JB |
12361 | low = attr_value_as_address (attr); |
12362 | high = attr_value_as_address (attr_high); | |
12363 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12364 | high += low; | |
91da1414 | 12365 | } |
af34e669 DJ |
12366 | else |
12367 | /* Found high w/o low attribute. */ | |
e385593e | 12368 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
12369 | |
12370 | /* Found consecutive range of addresses. */ | |
3a2b436a | 12371 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 12372 | } |
c906108c | 12373 | else |
af34e669 | 12374 | { |
e142c38c | 12375 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
12376 | if (attr != NULL) |
12377 | { | |
ab435259 DE |
12378 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12379 | We take advantage of the fact that DW_AT_ranges does not appear | |
12380 | in DW_TAG_compile_unit of DWO files. */ | |
12381 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
12382 | unsigned int ranges_offset = (DW_UNSND (attr) | |
12383 | + (need_ranges_base | |
12384 | ? cu->ranges_base | |
12385 | : 0)); | |
2e3cf129 | 12386 | |
af34e669 | 12387 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 12388 | .debug_ranges section. */ |
2e3cf129 | 12389 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 12390 | return PC_BOUNDS_INVALID; |
43039443 | 12391 | /* Found discontinuous range of addresses. */ |
3a2b436a | 12392 | ret = PC_BOUNDS_RANGES; |
af34e669 | 12393 | } |
e385593e JK |
12394 | else |
12395 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 12396 | } |
c906108c | 12397 | |
9373cf26 JK |
12398 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
12399 | if (high <= low) | |
e385593e | 12400 | return PC_BOUNDS_INVALID; |
c906108c SS |
12401 | |
12402 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
12403 | eliminate duplicate copies of functions and vtables and such. | |
12404 | The linker will arbitrarily choose one and discard the others. | |
12405 | The AT_*_pc values for such functions refer to local labels in | |
12406 | these sections. If the section from that file was discarded, the | |
12407 | labels are not in the output, so the relocs get a value of 0. | |
12408 | If this is a discarded function, mark the pc bounds as invalid, | |
12409 | so that GDB will ignore it. */ | |
72dca2f5 | 12410 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 12411 | return PC_BOUNDS_INVALID; |
c906108c SS |
12412 | |
12413 | *lowpc = low; | |
96408a79 SA |
12414 | if (highpc) |
12415 | *highpc = high; | |
af34e669 | 12416 | return ret; |
c906108c SS |
12417 | } |
12418 | ||
b084d499 JB |
12419 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
12420 | its low and high PC addresses. Do nothing if these addresses could not | |
12421 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
12422 | and HIGHPC to the high address if greater than HIGHPC. */ | |
12423 | ||
12424 | static void | |
12425 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
12426 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12427 | struct dwarf2_cu *cu) | |
12428 | { | |
12429 | CORE_ADDR low, high; | |
12430 | struct die_info *child = die->child; | |
12431 | ||
e385593e | 12432 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 12433 | { |
325fac50 PA |
12434 | *lowpc = std::min (*lowpc, low); |
12435 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
12436 | } |
12437 | ||
12438 | /* If the language does not allow nested subprograms (either inside | |
12439 | subprograms or lexical blocks), we're done. */ | |
12440 | if (cu->language != language_ada) | |
12441 | return; | |
6e70227d | 12442 | |
b084d499 JB |
12443 | /* Check all the children of the given DIE. If it contains nested |
12444 | subprograms, then check their pc bounds. Likewise, we need to | |
12445 | check lexical blocks as well, as they may also contain subprogram | |
12446 | definitions. */ | |
12447 | while (child && child->tag) | |
12448 | { | |
12449 | if (child->tag == DW_TAG_subprogram | |
12450 | || child->tag == DW_TAG_lexical_block) | |
12451 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
12452 | child = sibling_die (child); | |
12453 | } | |
12454 | } | |
12455 | ||
fae299cd DC |
12456 | /* Get the low and high pc's represented by the scope DIE, and store |
12457 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
12458 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
12459 | ||
12460 | static void | |
12461 | get_scope_pc_bounds (struct die_info *die, | |
12462 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12463 | struct dwarf2_cu *cu) | |
12464 | { | |
12465 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
12466 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
12467 | CORE_ADDR current_low, current_high; | |
12468 | ||
3a2b436a | 12469 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 12470 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
12471 | { |
12472 | best_low = current_low; | |
12473 | best_high = current_high; | |
12474 | } | |
12475 | else | |
12476 | { | |
12477 | struct die_info *child = die->child; | |
12478 | ||
12479 | while (child && child->tag) | |
12480 | { | |
12481 | switch (child->tag) { | |
12482 | case DW_TAG_subprogram: | |
b084d499 | 12483 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
12484 | break; |
12485 | case DW_TAG_namespace: | |
f55ee35c | 12486 | case DW_TAG_module: |
fae299cd DC |
12487 | /* FIXME: carlton/2004-01-16: Should we do this for |
12488 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
12489 | that current GCC's always emit the DIEs corresponding | |
12490 | to definitions of methods of classes as children of a | |
12491 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
12492 | the DIEs giving the declarations, which could be | |
12493 | anywhere). But I don't see any reason why the | |
12494 | standards says that they have to be there. */ | |
12495 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
12496 | ||
12497 | if (current_low != ((CORE_ADDR) -1)) | |
12498 | { | |
325fac50 PA |
12499 | best_low = std::min (best_low, current_low); |
12500 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
12501 | } |
12502 | break; | |
12503 | default: | |
0963b4bd | 12504 | /* Ignore. */ |
fae299cd DC |
12505 | break; |
12506 | } | |
12507 | ||
12508 | child = sibling_die (child); | |
12509 | } | |
12510 | } | |
12511 | ||
12512 | *lowpc = best_low; | |
12513 | *highpc = best_high; | |
12514 | } | |
12515 | ||
801e3a5b JB |
12516 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
12517 | in DIE. */ | |
380bca97 | 12518 | |
801e3a5b JB |
12519 | static void |
12520 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
12521 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
12522 | { | |
bb5ed363 | 12523 | struct objfile *objfile = cu->objfile; |
3e29f34a | 12524 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 12525 | struct attribute *attr; |
91da1414 | 12526 | struct attribute *attr_high; |
801e3a5b | 12527 | |
91da1414 MW |
12528 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12529 | if (attr_high) | |
801e3a5b | 12530 | { |
801e3a5b JB |
12531 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
12532 | if (attr) | |
12533 | { | |
31aa7e4e JB |
12534 | CORE_ADDR low = attr_value_as_address (attr); |
12535 | CORE_ADDR high = attr_value_as_address (attr_high); | |
12536 | ||
12537 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12538 | high += low; | |
9a619af0 | 12539 | |
3e29f34a MR |
12540 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
12541 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
12542 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
12543 | } |
12544 | } | |
12545 | ||
12546 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
12547 | if (attr) | |
12548 | { | |
bb5ed363 | 12549 | bfd *obfd = objfile->obfd; |
ab435259 DE |
12550 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12551 | We take advantage of the fact that DW_AT_ranges does not appear | |
12552 | in DW_TAG_compile_unit of DWO files. */ | |
12553 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
12554 | |
12555 | /* The value of the DW_AT_ranges attribute is the offset of the | |
12556 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
12557 | unsigned long offset = (DW_UNSND (attr) |
12558 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 12559 | const gdb_byte *buffer; |
801e3a5b JB |
12560 | |
12561 | /* For some target architectures, but not others, the | |
12562 | read_address function sign-extends the addresses it returns. | |
12563 | To recognize base address selection entries, we need a | |
12564 | mask. */ | |
12565 | unsigned int addr_size = cu->header.addr_size; | |
12566 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12567 | ||
12568 | /* The base address, to which the next pair is relative. Note | |
12569 | that this 'base' is a DWARF concept: most entries in a range | |
12570 | list are relative, to reduce the number of relocs against the | |
12571 | debugging information. This is separate from this function's | |
12572 | 'baseaddr' argument, which GDB uses to relocate debugging | |
12573 | information from a shared library based on the address at | |
12574 | which the library was loaded. */ | |
d00adf39 DE |
12575 | CORE_ADDR base = cu->base_address; |
12576 | int base_known = cu->base_known; | |
801e3a5b | 12577 | |
5f46c5a5 JK |
12578 | dwarf2_ranges_process (offset, cu, |
12579 | [&] (CORE_ADDR start, CORE_ADDR end) | |
12580 | { | |
58fdfd2c JK |
12581 | start += baseaddr; |
12582 | end += baseaddr; | |
5f46c5a5 JK |
12583 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
12584 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
12585 | record_block_range (block, start, end - 1); | |
12586 | }); | |
801e3a5b JB |
12587 | } |
12588 | } | |
12589 | ||
685b1105 JK |
12590 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
12591 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 12592 | |
685b1105 JK |
12593 | static void |
12594 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 12595 | { |
38360086 | 12596 | int major, minor; |
60d5a603 JK |
12597 | |
12598 | if (cu->producer == NULL) | |
12599 | { | |
12600 | /* For unknown compilers expect their behavior is DWARF version | |
12601 | compliant. | |
12602 | ||
12603 | GCC started to support .debug_types sections by -gdwarf-4 since | |
12604 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
12605 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
12606 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
12607 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 12608 | } |
b1ffba5a | 12609 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 12610 | { |
38360086 MW |
12611 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
12612 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 12613 | } |
61012eef | 12614 | else if (startswith (cu->producer, "Intel(R) C")) |
685b1105 JK |
12615 | cu->producer_is_icc = 1; |
12616 | else | |
12617 | { | |
12618 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
12619 | compliant. */ | |
60d5a603 JK |
12620 | } |
12621 | ||
ba919b58 | 12622 | cu->checked_producer = 1; |
685b1105 | 12623 | } |
ba919b58 | 12624 | |
685b1105 JK |
12625 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
12626 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
12627 | during 4.6.0 experimental. */ | |
12628 | ||
12629 | static int | |
12630 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
12631 | { | |
12632 | if (!cu->checked_producer) | |
12633 | check_producer (cu); | |
12634 | ||
12635 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
12636 | } |
12637 | ||
12638 | /* Return the default accessibility type if it is not overriden by | |
12639 | DW_AT_accessibility. */ | |
12640 | ||
12641 | static enum dwarf_access_attribute | |
12642 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
12643 | { | |
12644 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
12645 | { | |
12646 | /* The default DWARF 2 accessibility for members is public, the default | |
12647 | accessibility for inheritance is private. */ | |
12648 | ||
12649 | if (die->tag != DW_TAG_inheritance) | |
12650 | return DW_ACCESS_public; | |
12651 | else | |
12652 | return DW_ACCESS_private; | |
12653 | } | |
12654 | else | |
12655 | { | |
12656 | /* DWARF 3+ defines the default accessibility a different way. The same | |
12657 | rules apply now for DW_TAG_inheritance as for the members and it only | |
12658 | depends on the container kind. */ | |
12659 | ||
12660 | if (die->parent->tag == DW_TAG_class_type) | |
12661 | return DW_ACCESS_private; | |
12662 | else | |
12663 | return DW_ACCESS_public; | |
12664 | } | |
12665 | } | |
12666 | ||
74ac6d43 TT |
12667 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
12668 | offset. If the attribute was not found return 0, otherwise return | |
12669 | 1. If it was found but could not properly be handled, set *OFFSET | |
12670 | to 0. */ | |
12671 | ||
12672 | static int | |
12673 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
12674 | LONGEST *offset) | |
12675 | { | |
12676 | struct attribute *attr; | |
12677 | ||
12678 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
12679 | if (attr != NULL) | |
12680 | { | |
12681 | *offset = 0; | |
12682 | ||
12683 | /* Note that we do not check for a section offset first here. | |
12684 | This is because DW_AT_data_member_location is new in DWARF 4, | |
12685 | so if we see it, we can assume that a constant form is really | |
12686 | a constant and not a section offset. */ | |
12687 | if (attr_form_is_constant (attr)) | |
12688 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
12689 | else if (attr_form_is_section_offset (attr)) | |
12690 | dwarf2_complex_location_expr_complaint (); | |
12691 | else if (attr_form_is_block (attr)) | |
12692 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
12693 | else | |
12694 | dwarf2_complex_location_expr_complaint (); | |
12695 | ||
12696 | return 1; | |
12697 | } | |
12698 | ||
12699 | return 0; | |
12700 | } | |
12701 | ||
c906108c SS |
12702 | /* Add an aggregate field to the field list. */ |
12703 | ||
12704 | static void | |
107d2387 | 12705 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12706 | struct dwarf2_cu *cu) |
6e70227d | 12707 | { |
e7c27a73 | 12708 | struct objfile *objfile = cu->objfile; |
5e2b427d | 12709 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12710 | struct nextfield *new_field; |
12711 | struct attribute *attr; | |
12712 | struct field *fp; | |
15d034d0 | 12713 | const char *fieldname = ""; |
c906108c SS |
12714 | |
12715 | /* Allocate a new field list entry and link it in. */ | |
8d749320 | 12716 | new_field = XNEW (struct nextfield); |
b8c9b27d | 12717 | make_cleanup (xfree, new_field); |
c906108c | 12718 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
12719 | |
12720 | if (die->tag == DW_TAG_inheritance) | |
12721 | { | |
12722 | new_field->next = fip->baseclasses; | |
12723 | fip->baseclasses = new_field; | |
12724 | } | |
12725 | else | |
12726 | { | |
12727 | new_field->next = fip->fields; | |
12728 | fip->fields = new_field; | |
12729 | } | |
c906108c SS |
12730 | fip->nfields++; |
12731 | ||
e142c38c | 12732 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
12733 | if (attr) |
12734 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
12735 | else |
12736 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
12737 | if (new_field->accessibility != DW_ACCESS_public) |
12738 | fip->non_public_fields = 1; | |
60d5a603 | 12739 | |
e142c38c | 12740 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
12741 | if (attr) |
12742 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
12743 | else |
12744 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
12745 | |
12746 | fp = &new_field->field; | |
a9a9bd0f | 12747 | |
e142c38c | 12748 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 12749 | { |
74ac6d43 TT |
12750 | LONGEST offset; |
12751 | ||
a9a9bd0f | 12752 | /* Data member other than a C++ static data member. */ |
6e70227d | 12753 | |
c906108c | 12754 | /* Get type of field. */ |
e7c27a73 | 12755 | fp->type = die_type (die, cu); |
c906108c | 12756 | |
d6a843b5 | 12757 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 12758 | |
c906108c | 12759 | /* Get bit size of field (zero if none). */ |
e142c38c | 12760 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
12761 | if (attr) |
12762 | { | |
12763 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
12764 | } | |
12765 | else | |
12766 | { | |
12767 | FIELD_BITSIZE (*fp) = 0; | |
12768 | } | |
12769 | ||
12770 | /* Get bit offset of field. */ | |
74ac6d43 TT |
12771 | if (handle_data_member_location (die, cu, &offset)) |
12772 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 12773 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
12774 | if (attr) |
12775 | { | |
5e2b427d | 12776 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
12777 | { |
12778 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
12779 | additional bit offset from the MSB of the containing |
12780 | anonymous object to the MSB of the field. We don't | |
12781 | have to do anything special since we don't need to | |
12782 | know the size of the anonymous object. */ | |
f41f5e61 | 12783 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
12784 | } |
12785 | else | |
12786 | { | |
12787 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
12788 | MSB of the anonymous object, subtract off the number of |
12789 | bits from the MSB of the field to the MSB of the | |
12790 | object, and then subtract off the number of bits of | |
12791 | the field itself. The result is the bit offset of | |
12792 | the LSB of the field. */ | |
c906108c SS |
12793 | int anonymous_size; |
12794 | int bit_offset = DW_UNSND (attr); | |
12795 | ||
e142c38c | 12796 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12797 | if (attr) |
12798 | { | |
12799 | /* The size of the anonymous object containing | |
12800 | the bit field is explicit, so use the | |
12801 | indicated size (in bytes). */ | |
12802 | anonymous_size = DW_UNSND (attr); | |
12803 | } | |
12804 | else | |
12805 | { | |
12806 | /* The size of the anonymous object containing | |
12807 | the bit field must be inferred from the type | |
12808 | attribute of the data member containing the | |
12809 | bit field. */ | |
12810 | anonymous_size = TYPE_LENGTH (fp->type); | |
12811 | } | |
f41f5e61 PA |
12812 | SET_FIELD_BITPOS (*fp, |
12813 | (FIELD_BITPOS (*fp) | |
12814 | + anonymous_size * bits_per_byte | |
12815 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
12816 | } |
12817 | } | |
da5b30da AA |
12818 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
12819 | if (attr != NULL) | |
12820 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
12821 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
12822 | |
12823 | /* Get name of field. */ | |
39cbfefa DJ |
12824 | fieldname = dwarf2_name (die, cu); |
12825 | if (fieldname == NULL) | |
12826 | fieldname = ""; | |
d8151005 DJ |
12827 | |
12828 | /* The name is already allocated along with this objfile, so we don't | |
12829 | need to duplicate it for the type. */ | |
12830 | fp->name = fieldname; | |
c906108c SS |
12831 | |
12832 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 12833 | pointer or virtual base class pointer) to private. */ |
e142c38c | 12834 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 12835 | { |
d48cc9dd | 12836 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
12837 | new_field->accessibility = DW_ACCESS_private; |
12838 | fip->non_public_fields = 1; | |
12839 | } | |
12840 | } | |
a9a9bd0f | 12841 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 12842 | { |
a9a9bd0f DC |
12843 | /* C++ static member. */ |
12844 | ||
12845 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
12846 | is a declaration, but all versions of G++ as of this writing | |
12847 | (so through at least 3.2.1) incorrectly generate | |
12848 | DW_TAG_variable tags. */ | |
6e70227d | 12849 | |
ff355380 | 12850 | const char *physname; |
c906108c | 12851 | |
a9a9bd0f | 12852 | /* Get name of field. */ |
39cbfefa DJ |
12853 | fieldname = dwarf2_name (die, cu); |
12854 | if (fieldname == NULL) | |
c906108c SS |
12855 | return; |
12856 | ||
254e6b9e | 12857 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
12858 | if (attr |
12859 | /* Only create a symbol if this is an external value. | |
12860 | new_symbol checks this and puts the value in the global symbol | |
12861 | table, which we want. If it is not external, new_symbol | |
12862 | will try to put the value in cu->list_in_scope which is wrong. */ | |
12863 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
12864 | { |
12865 | /* A static const member, not much different than an enum as far as | |
12866 | we're concerned, except that we can support more types. */ | |
12867 | new_symbol (die, NULL, cu); | |
12868 | } | |
12869 | ||
2df3850c | 12870 | /* Get physical name. */ |
ff355380 | 12871 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 12872 | |
d8151005 DJ |
12873 | /* The name is already allocated along with this objfile, so we don't |
12874 | need to duplicate it for the type. */ | |
12875 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 12876 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 12877 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
12878 | } |
12879 | else if (die->tag == DW_TAG_inheritance) | |
12880 | { | |
74ac6d43 | 12881 | LONGEST offset; |
d4b96c9a | 12882 | |
74ac6d43 TT |
12883 | /* C++ base class field. */ |
12884 | if (handle_data_member_location (die, cu, &offset)) | |
12885 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 12886 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 12887 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
12888 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
12889 | fip->nbaseclasses++; | |
12890 | } | |
12891 | } | |
12892 | ||
98751a41 JK |
12893 | /* Add a typedef defined in the scope of the FIP's class. */ |
12894 | ||
12895 | static void | |
12896 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
12897 | struct dwarf2_cu *cu) | |
6e70227d | 12898 | { |
98751a41 | 12899 | struct typedef_field_list *new_field; |
98751a41 | 12900 | struct typedef_field *fp; |
98751a41 JK |
12901 | |
12902 | /* Allocate a new field list entry and link it in. */ | |
8d749320 | 12903 | new_field = XCNEW (struct typedef_field_list); |
98751a41 JK |
12904 | make_cleanup (xfree, new_field); |
12905 | ||
12906 | gdb_assert (die->tag == DW_TAG_typedef); | |
12907 | ||
12908 | fp = &new_field->field; | |
12909 | ||
12910 | /* Get name of field. */ | |
12911 | fp->name = dwarf2_name (die, cu); | |
12912 | if (fp->name == NULL) | |
12913 | return; | |
12914 | ||
12915 | fp->type = read_type_die (die, cu); | |
12916 | ||
12917 | new_field->next = fip->typedef_field_list; | |
12918 | fip->typedef_field_list = new_field; | |
12919 | fip->typedef_field_list_count++; | |
12920 | } | |
12921 | ||
c906108c SS |
12922 | /* Create the vector of fields, and attach it to the type. */ |
12923 | ||
12924 | static void | |
fba45db2 | 12925 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12926 | struct dwarf2_cu *cu) |
c906108c SS |
12927 | { |
12928 | int nfields = fip->nfields; | |
12929 | ||
12930 | /* Record the field count, allocate space for the array of fields, | |
12931 | and create blank accessibility bitfields if necessary. */ | |
12932 | TYPE_NFIELDS (type) = nfields; | |
12933 | TYPE_FIELDS (type) = (struct field *) | |
12934 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
12935 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
12936 | ||
b4ba55a1 | 12937 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
12938 | { |
12939 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12940 | ||
12941 | TYPE_FIELD_PRIVATE_BITS (type) = | |
12942 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12943 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
12944 | ||
12945 | TYPE_FIELD_PROTECTED_BITS (type) = | |
12946 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12947 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
12948 | ||
774b6a14 TT |
12949 | TYPE_FIELD_IGNORE_BITS (type) = |
12950 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12951 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
12952 | } |
12953 | ||
12954 | /* If the type has baseclasses, allocate and clear a bit vector for | |
12955 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 12956 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
12957 | { |
12958 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 12959 | unsigned char *pointer; |
c906108c SS |
12960 | |
12961 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 12962 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 12963 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
c906108c SS |
12964 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
12965 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
12966 | } | |
12967 | ||
3e43a32a MS |
12968 | /* Copy the saved-up fields into the field vector. Start from the head of |
12969 | the list, adding to the tail of the field array, so that they end up in | |
12970 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
12971 | while (nfields-- > 0) |
12972 | { | |
7d0ccb61 DJ |
12973 | struct nextfield *fieldp; |
12974 | ||
12975 | if (fip->fields) | |
12976 | { | |
12977 | fieldp = fip->fields; | |
12978 | fip->fields = fieldp->next; | |
12979 | } | |
12980 | else | |
12981 | { | |
12982 | fieldp = fip->baseclasses; | |
12983 | fip->baseclasses = fieldp->next; | |
12984 | } | |
12985 | ||
12986 | TYPE_FIELD (type, nfields) = fieldp->field; | |
12987 | switch (fieldp->accessibility) | |
c906108c | 12988 | { |
c5aa993b | 12989 | case DW_ACCESS_private: |
b4ba55a1 JB |
12990 | if (cu->language != language_ada) |
12991 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 12992 | break; |
c906108c | 12993 | |
c5aa993b | 12994 | case DW_ACCESS_protected: |
b4ba55a1 JB |
12995 | if (cu->language != language_ada) |
12996 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 12997 | break; |
c906108c | 12998 | |
c5aa993b JM |
12999 | case DW_ACCESS_public: |
13000 | break; | |
c906108c | 13001 | |
c5aa993b JM |
13002 | default: |
13003 | /* Unknown accessibility. Complain and treat it as public. */ | |
13004 | { | |
e2e0b3e5 | 13005 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 13006 | fieldp->accessibility); |
c5aa993b JM |
13007 | } |
13008 | break; | |
c906108c SS |
13009 | } |
13010 | if (nfields < fip->nbaseclasses) | |
13011 | { | |
7d0ccb61 | 13012 | switch (fieldp->virtuality) |
c906108c | 13013 | { |
c5aa993b JM |
13014 | case DW_VIRTUALITY_virtual: |
13015 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 13016 | if (cu->language == language_ada) |
a73c6dcd | 13017 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
13018 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
13019 | break; | |
c906108c SS |
13020 | } |
13021 | } | |
c906108c SS |
13022 | } |
13023 | } | |
13024 | ||
7d27a96d TT |
13025 | /* Return true if this member function is a constructor, false |
13026 | otherwise. */ | |
13027 | ||
13028 | static int | |
13029 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
13030 | { | |
13031 | const char *fieldname; | |
fe978cb0 | 13032 | const char *type_name; |
7d27a96d TT |
13033 | int len; |
13034 | ||
13035 | if (die->parent == NULL) | |
13036 | return 0; | |
13037 | ||
13038 | if (die->parent->tag != DW_TAG_structure_type | |
13039 | && die->parent->tag != DW_TAG_union_type | |
13040 | && die->parent->tag != DW_TAG_class_type) | |
13041 | return 0; | |
13042 | ||
13043 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
13044 | type_name = dwarf2_name (die->parent, cu); |
13045 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
13046 | return 0; |
13047 | ||
13048 | len = strlen (fieldname); | |
fe978cb0 PA |
13049 | return (strncmp (fieldname, type_name, len) == 0 |
13050 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
13051 | } |
13052 | ||
c906108c SS |
13053 | /* Add a member function to the proper fieldlist. */ |
13054 | ||
13055 | static void | |
107d2387 | 13056 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 13057 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 13058 | { |
e7c27a73 | 13059 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13060 | struct attribute *attr; |
13061 | struct fnfieldlist *flp; | |
13062 | int i; | |
13063 | struct fn_field *fnp; | |
15d034d0 | 13064 | const char *fieldname; |
c906108c | 13065 | struct nextfnfield *new_fnfield; |
f792889a | 13066 | struct type *this_type; |
60d5a603 | 13067 | enum dwarf_access_attribute accessibility; |
c906108c | 13068 | |
b4ba55a1 | 13069 | if (cu->language == language_ada) |
a73c6dcd | 13070 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 13071 | |
2df3850c | 13072 | /* Get name of member function. */ |
39cbfefa DJ |
13073 | fieldname = dwarf2_name (die, cu); |
13074 | if (fieldname == NULL) | |
2df3850c | 13075 | return; |
c906108c | 13076 | |
c906108c SS |
13077 | /* Look up member function name in fieldlist. */ |
13078 | for (i = 0; i < fip->nfnfields; i++) | |
13079 | { | |
27bfe10e | 13080 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
13081 | break; |
13082 | } | |
13083 | ||
13084 | /* Create new list element if necessary. */ | |
13085 | if (i < fip->nfnfields) | |
13086 | flp = &fip->fnfieldlists[i]; | |
13087 | else | |
13088 | { | |
13089 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13090 | { | |
13091 | fip->fnfieldlists = (struct fnfieldlist *) | |
13092 | xrealloc (fip->fnfieldlists, | |
13093 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13094 | * sizeof (struct fnfieldlist)); |
c906108c | 13095 | if (fip->nfnfields == 0) |
c13c43fd | 13096 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
13097 | } |
13098 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
13099 | flp->name = fieldname; | |
13100 | flp->length = 0; | |
13101 | flp->head = NULL; | |
3da10d80 | 13102 | i = fip->nfnfields++; |
c906108c SS |
13103 | } |
13104 | ||
13105 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 13106 | entry. */ |
8d749320 | 13107 | new_fnfield = XNEW (struct nextfnfield); |
b8c9b27d | 13108 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
13109 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
13110 | new_fnfield->next = flp->head; | |
13111 | flp->head = new_fnfield; | |
13112 | flp->length++; | |
13113 | ||
13114 | /* Fill in the member function field info. */ | |
13115 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
13116 | |
13117 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 13118 | if (cu->language == language_cplus) |
3da10d80 KS |
13119 | { |
13120 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
13121 | die, cu); | |
13122 | } | |
13123 | else | |
13124 | { | |
1d06ead6 | 13125 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
13126 | fnp->physname = physname ? physname : ""; |
13127 | } | |
13128 | ||
c906108c | 13129 | fnp->type = alloc_type (objfile); |
f792889a DJ |
13130 | this_type = read_type_die (die, cu); |
13131 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 13132 | { |
f792889a | 13133 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 13134 | |
f792889a | 13135 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
13136 | of the method itself (TYPE_CODE_METHOD). */ |
13137 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
13138 | TYPE_TARGET_TYPE (this_type), |
13139 | TYPE_FIELDS (this_type), | |
13140 | TYPE_NFIELDS (this_type), | |
13141 | TYPE_VARARGS (this_type)); | |
c906108c SS |
13142 | |
13143 | /* Handle static member functions. | |
c5aa993b | 13144 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
13145 | member functions. G++ helps GDB by marking the first |
13146 | parameter for non-static member functions (which is the this | |
13147 | pointer) as artificial. We obtain this information from | |
13148 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 13149 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
13150 | fnp->voffset = VOFFSET_STATIC; |
13151 | } | |
13152 | else | |
e2e0b3e5 | 13153 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 13154 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
13155 | |
13156 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 13157 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 13158 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 13159 | |
3e43a32a MS |
13160 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
13161 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
13162 | |
13163 | /* Get accessibility. */ | |
e142c38c | 13164 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 13165 | if (attr) |
aead7601 | 13166 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
13167 | else |
13168 | accessibility = dwarf2_default_access_attribute (die, cu); | |
13169 | switch (accessibility) | |
c906108c | 13170 | { |
60d5a603 JK |
13171 | case DW_ACCESS_private: |
13172 | fnp->is_private = 1; | |
13173 | break; | |
13174 | case DW_ACCESS_protected: | |
13175 | fnp->is_protected = 1; | |
13176 | break; | |
c906108c SS |
13177 | } |
13178 | ||
b02dede2 | 13179 | /* Check for artificial methods. */ |
e142c38c | 13180 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
13181 | if (attr && DW_UNSND (attr) != 0) |
13182 | fnp->is_artificial = 1; | |
13183 | ||
7d27a96d TT |
13184 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
13185 | ||
0d564a31 | 13186 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
13187 | function. For older versions of GCC, this is an offset in the |
13188 | appropriate virtual table, as specified by DW_AT_containing_type. | |
13189 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
13190 | to the object address. */ |
13191 | ||
e142c38c | 13192 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 13193 | if (attr) |
8e19ed76 | 13194 | { |
aec5aa8b | 13195 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 13196 | { |
aec5aa8b TT |
13197 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
13198 | { | |
13199 | /* Old-style GCC. */ | |
13200 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
13201 | } | |
13202 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
13203 | || (DW_BLOCK (attr)->size > 1 | |
13204 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
13205 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
13206 | { | |
aec5aa8b TT |
13207 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
13208 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
13209 | dwarf2_complex_location_expr_complaint (); | |
13210 | else | |
13211 | fnp->voffset /= cu->header.addr_size; | |
13212 | fnp->voffset += 2; | |
13213 | } | |
13214 | else | |
13215 | dwarf2_complex_location_expr_complaint (); | |
13216 | ||
13217 | if (!fnp->fcontext) | |
7e993ebf KS |
13218 | { |
13219 | /* If there is no `this' field and no DW_AT_containing_type, | |
13220 | we cannot actually find a base class context for the | |
13221 | vtable! */ | |
13222 | if (TYPE_NFIELDS (this_type) == 0 | |
13223 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
13224 | { | |
13225 | complaint (&symfile_complaints, | |
13226 | _("cannot determine context for virtual member " | |
13227 | "function \"%s\" (offset %d)"), | |
13228 | fieldname, die->offset.sect_off); | |
13229 | } | |
13230 | else | |
13231 | { | |
13232 | fnp->fcontext | |
13233 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
13234 | } | |
13235 | } | |
aec5aa8b | 13236 | } |
3690dd37 | 13237 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 13238 | { |
4d3c2250 | 13239 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
13240 | } |
13241 | else | |
13242 | { | |
4d3c2250 KB |
13243 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
13244 | fieldname); | |
8e19ed76 | 13245 | } |
0d564a31 | 13246 | } |
d48cc9dd DJ |
13247 | else |
13248 | { | |
13249 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
13250 | if (attr && DW_UNSND (attr)) | |
13251 | { | |
13252 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
13253 | complaint (&symfile_complaints, | |
3e43a32a MS |
13254 | _("Member function \"%s\" (offset %d) is virtual " |
13255 | "but the vtable offset is not specified"), | |
b64f50a1 | 13256 | fieldname, die->offset.sect_off); |
9655fd1a | 13257 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
13258 | TYPE_CPLUS_DYNAMIC (type) = 1; |
13259 | } | |
13260 | } | |
c906108c SS |
13261 | } |
13262 | ||
13263 | /* Create the vector of member function fields, and attach it to the type. */ | |
13264 | ||
13265 | static void | |
fba45db2 | 13266 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 13267 | struct dwarf2_cu *cu) |
c906108c SS |
13268 | { |
13269 | struct fnfieldlist *flp; | |
c906108c SS |
13270 | int i; |
13271 | ||
b4ba55a1 | 13272 | if (cu->language == language_ada) |
a73c6dcd | 13273 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 13274 | |
c906108c SS |
13275 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
13276 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
13277 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
13278 | ||
13279 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
13280 | { | |
13281 | struct nextfnfield *nfp = flp->head; | |
13282 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
13283 | int k; | |
13284 | ||
13285 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
13286 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
13287 | fn_flp->fn_fields = (struct fn_field *) | |
13288 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
13289 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 13290 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
13291 | } |
13292 | ||
13293 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
13294 | } |
13295 | ||
1168df01 JB |
13296 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
13297 | language, zero otherwise. */ | |
13298 | static int | |
13299 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
13300 | { | |
13301 | static const char vptr[] = "_vptr"; | |
987504bb | 13302 | static const char vtable[] = "vtable"; |
1168df01 | 13303 | |
9c37b5ae TT |
13304 | /* Look for the C++ form of the vtable. */ |
13305 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
13306 | return 1; |
13307 | ||
13308 | return 0; | |
13309 | } | |
13310 | ||
c0dd20ea | 13311 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
13312 | functions, with the ABI-specified layout. If TYPE describes |
13313 | such a structure, smash it into a member function type. | |
61049d3b DJ |
13314 | |
13315 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
13316 | This is GCC PR debug/28767. */ | |
c0dd20ea | 13317 | |
0b92b5bb TT |
13318 | static void |
13319 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 13320 | { |
09e2d7c7 | 13321 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
13322 | |
13323 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
13324 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
13325 | return; | |
c0dd20ea DJ |
13326 | |
13327 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
13328 | if (TYPE_FIELD_NAME (type, 0) == NULL |
13329 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
13330 | || TYPE_FIELD_NAME (type, 1) == NULL | |
13331 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
13332 | return; | |
c0dd20ea DJ |
13333 | |
13334 | /* Find the type of the method. */ | |
0b92b5bb | 13335 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
13336 | if (pfn_type == NULL |
13337 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
13338 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 13339 | return; |
c0dd20ea DJ |
13340 | |
13341 | /* Look for the "this" argument. */ | |
13342 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
13343 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 13344 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 13345 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 13346 | return; |
c0dd20ea | 13347 | |
09e2d7c7 | 13348 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 13349 | new_type = alloc_type (objfile); |
09e2d7c7 | 13350 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
13351 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
13352 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 13353 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 13354 | } |
1168df01 | 13355 | |
685b1105 JK |
13356 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
13357 | (icc). */ | |
13358 | ||
13359 | static int | |
13360 | producer_is_icc (struct dwarf2_cu *cu) | |
13361 | { | |
13362 | if (!cu->checked_producer) | |
13363 | check_producer (cu); | |
13364 | ||
13365 | return cu->producer_is_icc; | |
13366 | } | |
13367 | ||
c906108c | 13368 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
13369 | (definition) to create a type for the structure or union. Fill in |
13370 | the type's name and general properties; the members will not be | |
83655187 DE |
13371 | processed until process_structure_scope. A symbol table entry for |
13372 | the type will also not be done until process_structure_scope (assuming | |
13373 | the type has a name). | |
c906108c | 13374 | |
c767944b DJ |
13375 | NOTE: we need to call these functions regardless of whether or not the |
13376 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 13377 | structure or union. This gets the type entered into our set of |
83655187 | 13378 | user defined types. */ |
c906108c | 13379 | |
f792889a | 13380 | static struct type * |
134d01f1 | 13381 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13382 | { |
e7c27a73 | 13383 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13384 | struct type *type; |
13385 | struct attribute *attr; | |
15d034d0 | 13386 | const char *name; |
c906108c | 13387 | |
348e048f DE |
13388 | /* If the definition of this type lives in .debug_types, read that type. |
13389 | Don't follow DW_AT_specification though, that will take us back up | |
13390 | the chain and we want to go down. */ | |
45e58e77 | 13391 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13392 | if (attr) |
13393 | { | |
ac9ec31b | 13394 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13395 | |
ac9ec31b | 13396 | /* The type's CU may not be the same as CU. |
02142a6c | 13397 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13398 | return set_die_type (die, type, cu); |
13399 | } | |
13400 | ||
c0dd20ea | 13401 | type = alloc_type (objfile); |
c906108c | 13402 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 13403 | |
39cbfefa DJ |
13404 | name = dwarf2_name (die, cu); |
13405 | if (name != NULL) | |
c906108c | 13406 | { |
987504bb | 13407 | if (cu->language == language_cplus |
c44af4eb TT |
13408 | || cu->language == language_d |
13409 | || cu->language == language_rust) | |
63d06c5c | 13410 | { |
15d034d0 | 13411 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
13412 | |
13413 | /* dwarf2_full_name might have already finished building the DIE's | |
13414 | type. If so, there is no need to continue. */ | |
13415 | if (get_die_type (die, cu) != NULL) | |
13416 | return get_die_type (die, cu); | |
13417 | ||
13418 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
13419 | if (die->tag == DW_TAG_structure_type |
13420 | || die->tag == DW_TAG_class_type) | |
13421 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
13422 | } |
13423 | else | |
13424 | { | |
d8151005 DJ |
13425 | /* The name is already allocated along with this objfile, so |
13426 | we don't need to duplicate it for the type. */ | |
7d455152 | 13427 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
13428 | if (die->tag == DW_TAG_class_type) |
13429 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 13430 | } |
c906108c SS |
13431 | } |
13432 | ||
13433 | if (die->tag == DW_TAG_structure_type) | |
13434 | { | |
13435 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
13436 | } | |
13437 | else if (die->tag == DW_TAG_union_type) | |
13438 | { | |
13439 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
13440 | } | |
13441 | else | |
13442 | { | |
4753d33b | 13443 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
13444 | } |
13445 | ||
0cc2414c TT |
13446 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
13447 | TYPE_DECLARED_CLASS (type) = 1; | |
13448 | ||
e142c38c | 13449 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13450 | if (attr) |
13451 | { | |
155bfbd3 JB |
13452 | if (attr_form_is_constant (attr)) |
13453 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13454 | else | |
13455 | { | |
13456 | /* For the moment, dynamic type sizes are not supported | |
13457 | by GDB's struct type. The actual size is determined | |
13458 | on-demand when resolving the type of a given object, | |
13459 | so set the type's length to zero for now. Otherwise, | |
13460 | we record an expression as the length, and that expression | |
13461 | could lead to a very large value, which could eventually | |
13462 | lead to us trying to allocate that much memory when creating | |
13463 | a value of that type. */ | |
13464 | TYPE_LENGTH (type) = 0; | |
13465 | } | |
c906108c SS |
13466 | } |
13467 | else | |
13468 | { | |
13469 | TYPE_LENGTH (type) = 0; | |
13470 | } | |
13471 | ||
422b1cb0 | 13472 | if (producer_is_icc (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 JK |
13473 | { |
13474 | /* ICC does not output the required DW_AT_declaration | |
13475 | on incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 13476 | TYPE_STUB (type) = 1; |
685b1105 JK |
13477 | } |
13478 | else | |
13479 | TYPE_STUB_SUPPORTED (type) = 1; | |
13480 | ||
dc718098 | 13481 | if (die_is_declaration (die, cu)) |
876cecd0 | 13482 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
13483 | else if (attr == NULL && die->child == NULL |
13484 | && producer_is_realview (cu->producer)) | |
13485 | /* RealView does not output the required DW_AT_declaration | |
13486 | on incomplete types. */ | |
13487 | TYPE_STUB (type) = 1; | |
dc718098 | 13488 | |
c906108c SS |
13489 | /* We need to add the type field to the die immediately so we don't |
13490 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 13491 | type within the structure itself. */ |
1c379e20 | 13492 | set_die_type (die, type, cu); |
c906108c | 13493 | |
7e314c57 JK |
13494 | /* set_die_type should be already done. */ |
13495 | set_descriptive_type (type, die, cu); | |
13496 | ||
c767944b DJ |
13497 | return type; |
13498 | } | |
13499 | ||
13500 | /* Finish creating a structure or union type, including filling in | |
13501 | its members and creating a symbol for it. */ | |
13502 | ||
13503 | static void | |
13504 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13505 | { | |
13506 | struct objfile *objfile = cu->objfile; | |
ca040673 | 13507 | struct die_info *child_die; |
c767944b DJ |
13508 | struct type *type; |
13509 | ||
13510 | type = get_die_type (die, cu); | |
13511 | if (type == NULL) | |
13512 | type = read_structure_type (die, cu); | |
13513 | ||
e142c38c | 13514 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
13515 | { |
13516 | struct field_info fi; | |
34eaf542 | 13517 | VEC (symbolp) *template_args = NULL; |
c767944b | 13518 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
13519 | |
13520 | memset (&fi, 0, sizeof (struct field_info)); | |
13521 | ||
639d11d3 | 13522 | child_die = die->child; |
c906108c SS |
13523 | |
13524 | while (child_die && child_die->tag) | |
13525 | { | |
a9a9bd0f DC |
13526 | if (child_die->tag == DW_TAG_member |
13527 | || child_die->tag == DW_TAG_variable) | |
c906108c | 13528 | { |
a9a9bd0f DC |
13529 | /* NOTE: carlton/2002-11-05: A C++ static data member |
13530 | should be a DW_TAG_member that is a declaration, but | |
13531 | all versions of G++ as of this writing (so through at | |
13532 | least 3.2.1) incorrectly generate DW_TAG_variable | |
13533 | tags for them instead. */ | |
e7c27a73 | 13534 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13535 | } |
8713b1b1 | 13536 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 13537 | { |
e98c9e7c TT |
13538 | /* Rust doesn't have member functions in the C++ sense. |
13539 | However, it does emit ordinary functions as children | |
13540 | of a struct DIE. */ | |
13541 | if (cu->language == language_rust) | |
13542 | read_func_scope (child_die, cu); | |
13543 | else | |
13544 | { | |
13545 | /* C++ member function. */ | |
13546 | dwarf2_add_member_fn (&fi, child_die, type, cu); | |
13547 | } | |
c906108c SS |
13548 | } |
13549 | else if (child_die->tag == DW_TAG_inheritance) | |
13550 | { | |
13551 | /* C++ base class field. */ | |
e7c27a73 | 13552 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13553 | } |
98751a41 JK |
13554 | else if (child_die->tag == DW_TAG_typedef) |
13555 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
13556 | else if (child_die->tag == DW_TAG_template_type_param |
13557 | || child_die->tag == DW_TAG_template_value_param) | |
13558 | { | |
13559 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13560 | ||
f1078f66 DJ |
13561 | if (arg != NULL) |
13562 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
13563 | } |
13564 | ||
c906108c SS |
13565 | child_die = sibling_die (child_die); |
13566 | } | |
13567 | ||
34eaf542 TT |
13568 | /* Attach template arguments to type. */ |
13569 | if (! VEC_empty (symbolp, template_args)) | |
13570 | { | |
13571 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
13572 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13573 | = VEC_length (symbolp, template_args); | |
13574 | TYPE_TEMPLATE_ARGUMENTS (type) | |
8d749320 SM |
13575 | = XOBNEWVEC (&objfile->objfile_obstack, |
13576 | struct symbol *, | |
13577 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 TT |
13578 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
13579 | VEC_address (symbolp, template_args), | |
13580 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13581 | * sizeof (struct symbol *))); | |
13582 | VEC_free (symbolp, template_args); | |
13583 | } | |
13584 | ||
c906108c SS |
13585 | /* Attach fields and member functions to the type. */ |
13586 | if (fi.nfields) | |
e7c27a73 | 13587 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
13588 | if (fi.nfnfields) |
13589 | { | |
e7c27a73 | 13590 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 13591 | |
c5aa993b | 13592 | /* Get the type which refers to the base class (possibly this |
c906108c | 13593 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
13594 | class from the DW_AT_containing_type attribute. This use of |
13595 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 13596 | |
e142c38c | 13597 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 13598 | { |
e7c27a73 | 13599 | struct type *t = die_containing_type (die, cu); |
c906108c | 13600 | |
ae6ae975 | 13601 | set_type_vptr_basetype (type, t); |
c906108c SS |
13602 | if (type == t) |
13603 | { | |
c906108c SS |
13604 | int i; |
13605 | ||
13606 | /* Our own class provides vtbl ptr. */ | |
13607 | for (i = TYPE_NFIELDS (t) - 1; | |
13608 | i >= TYPE_N_BASECLASSES (t); | |
13609 | --i) | |
13610 | { | |
0d5cff50 | 13611 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 13612 | |
1168df01 | 13613 | if (is_vtable_name (fieldname, cu)) |
c906108c | 13614 | { |
ae6ae975 | 13615 | set_type_vptr_fieldno (type, i); |
c906108c SS |
13616 | break; |
13617 | } | |
13618 | } | |
13619 | ||
13620 | /* Complain if virtual function table field not found. */ | |
13621 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 13622 | complaint (&symfile_complaints, |
3e43a32a MS |
13623 | _("virtual function table pointer " |
13624 | "not found when defining class '%s'"), | |
4d3c2250 KB |
13625 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
13626 | ""); | |
c906108c SS |
13627 | } |
13628 | else | |
13629 | { | |
ae6ae975 | 13630 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
13631 | } |
13632 | } | |
f6235d4c | 13633 | else if (cu->producer |
61012eef | 13634 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
13635 | { |
13636 | /* The IBM XLC compiler does not provide direct indication | |
13637 | of the containing type, but the vtable pointer is | |
13638 | always named __vfp. */ | |
13639 | ||
13640 | int i; | |
13641 | ||
13642 | for (i = TYPE_NFIELDS (type) - 1; | |
13643 | i >= TYPE_N_BASECLASSES (type); | |
13644 | --i) | |
13645 | { | |
13646 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
13647 | { | |
ae6ae975 DE |
13648 | set_type_vptr_fieldno (type, i); |
13649 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
13650 | break; |
13651 | } | |
13652 | } | |
13653 | } | |
c906108c | 13654 | } |
98751a41 JK |
13655 | |
13656 | /* Copy fi.typedef_field_list linked list elements content into the | |
13657 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
13658 | if (fi.typedef_field_list) | |
13659 | { | |
13660 | int i = fi.typedef_field_list_count; | |
13661 | ||
a0d7a4ff | 13662 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 13663 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
224c3ddb SM |
13664 | = ((struct typedef_field *) |
13665 | TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i)); | |
98751a41 JK |
13666 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; |
13667 | ||
13668 | /* Reverse the list order to keep the debug info elements order. */ | |
13669 | while (--i >= 0) | |
13670 | { | |
13671 | struct typedef_field *dest, *src; | |
6e70227d | 13672 | |
98751a41 JK |
13673 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
13674 | src = &fi.typedef_field_list->field; | |
13675 | fi.typedef_field_list = fi.typedef_field_list->next; | |
13676 | *dest = *src; | |
13677 | } | |
13678 | } | |
c767944b DJ |
13679 | |
13680 | do_cleanups (back_to); | |
c906108c | 13681 | } |
63d06c5c | 13682 | |
bb5ed363 | 13683 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 13684 | |
90aeadfc DC |
13685 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
13686 | snapshots) has been known to create a die giving a declaration | |
13687 | for a class that has, as a child, a die giving a definition for a | |
13688 | nested class. So we have to process our children even if the | |
13689 | current die is a declaration. Normally, of course, a declaration | |
13690 | won't have any children at all. */ | |
134d01f1 | 13691 | |
ca040673 DE |
13692 | child_die = die->child; |
13693 | ||
90aeadfc DC |
13694 | while (child_die != NULL && child_die->tag) |
13695 | { | |
13696 | if (child_die->tag == DW_TAG_member | |
13697 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
13698 | || child_die->tag == DW_TAG_inheritance |
13699 | || child_die->tag == DW_TAG_template_value_param | |
13700 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 13701 | { |
90aeadfc | 13702 | /* Do nothing. */ |
134d01f1 | 13703 | } |
90aeadfc DC |
13704 | else |
13705 | process_die (child_die, cu); | |
134d01f1 | 13706 | |
90aeadfc | 13707 | child_die = sibling_die (child_die); |
134d01f1 DJ |
13708 | } |
13709 | ||
fa4028e9 JB |
13710 | /* Do not consider external references. According to the DWARF standard, |
13711 | these DIEs are identified by the fact that they have no byte_size | |
13712 | attribute, and a declaration attribute. */ | |
13713 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
13714 | || !die_is_declaration (die, cu)) | |
c767944b | 13715 | new_symbol (die, type, cu); |
134d01f1 DJ |
13716 | } |
13717 | ||
55426c9d JB |
13718 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
13719 | update TYPE using some information only available in DIE's children. */ | |
13720 | ||
13721 | static void | |
13722 | update_enumeration_type_from_children (struct die_info *die, | |
13723 | struct type *type, | |
13724 | struct dwarf2_cu *cu) | |
13725 | { | |
13726 | struct obstack obstack; | |
60f7655a | 13727 | struct die_info *child_die; |
55426c9d JB |
13728 | int unsigned_enum = 1; |
13729 | int flag_enum = 1; | |
13730 | ULONGEST mask = 0; | |
13731 | struct cleanup *old_chain; | |
13732 | ||
13733 | obstack_init (&obstack); | |
13734 | old_chain = make_cleanup_obstack_free (&obstack); | |
13735 | ||
60f7655a DE |
13736 | for (child_die = die->child; |
13737 | child_die != NULL && child_die->tag; | |
13738 | child_die = sibling_die (child_die)) | |
55426c9d JB |
13739 | { |
13740 | struct attribute *attr; | |
13741 | LONGEST value; | |
13742 | const gdb_byte *bytes; | |
13743 | struct dwarf2_locexpr_baton *baton; | |
13744 | const char *name; | |
60f7655a | 13745 | |
55426c9d JB |
13746 | if (child_die->tag != DW_TAG_enumerator) |
13747 | continue; | |
13748 | ||
13749 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
13750 | if (attr == NULL) | |
13751 | continue; | |
13752 | ||
13753 | name = dwarf2_name (child_die, cu); | |
13754 | if (name == NULL) | |
13755 | name = "<anonymous enumerator>"; | |
13756 | ||
13757 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
13758 | &value, &bytes, &baton); | |
13759 | if (value < 0) | |
13760 | { | |
13761 | unsigned_enum = 0; | |
13762 | flag_enum = 0; | |
13763 | } | |
13764 | else if ((mask & value) != 0) | |
13765 | flag_enum = 0; | |
13766 | else | |
13767 | mask |= value; | |
13768 | ||
13769 | /* If we already know that the enum type is neither unsigned, nor | |
13770 | a flag type, no need to look at the rest of the enumerates. */ | |
13771 | if (!unsigned_enum && !flag_enum) | |
13772 | break; | |
55426c9d JB |
13773 | } |
13774 | ||
13775 | if (unsigned_enum) | |
13776 | TYPE_UNSIGNED (type) = 1; | |
13777 | if (flag_enum) | |
13778 | TYPE_FLAG_ENUM (type) = 1; | |
13779 | ||
13780 | do_cleanups (old_chain); | |
13781 | } | |
13782 | ||
134d01f1 DJ |
13783 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
13784 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 13785 | |
f792889a | 13786 | static struct type * |
134d01f1 | 13787 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13788 | { |
e7c27a73 | 13789 | struct objfile *objfile = cu->objfile; |
c906108c | 13790 | struct type *type; |
c906108c | 13791 | struct attribute *attr; |
0114d602 | 13792 | const char *name; |
134d01f1 | 13793 | |
348e048f DE |
13794 | /* If the definition of this type lives in .debug_types, read that type. |
13795 | Don't follow DW_AT_specification though, that will take us back up | |
13796 | the chain and we want to go down. */ | |
45e58e77 | 13797 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13798 | if (attr) |
13799 | { | |
ac9ec31b | 13800 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13801 | |
ac9ec31b | 13802 | /* The type's CU may not be the same as CU. |
02142a6c | 13803 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13804 | return set_die_type (die, type, cu); |
13805 | } | |
13806 | ||
c906108c SS |
13807 | type = alloc_type (objfile); |
13808 | ||
13809 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 13810 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 13811 | if (name != NULL) |
7d455152 | 13812 | TYPE_TAG_NAME (type) = name; |
c906108c | 13813 | |
0626fc76 TT |
13814 | attr = dwarf2_attr (die, DW_AT_type, cu); |
13815 | if (attr != NULL) | |
13816 | { | |
13817 | struct type *underlying_type = die_type (die, cu); | |
13818 | ||
13819 | TYPE_TARGET_TYPE (type) = underlying_type; | |
13820 | } | |
13821 | ||
e142c38c | 13822 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13823 | if (attr) |
13824 | { | |
13825 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13826 | } | |
13827 | else | |
13828 | { | |
13829 | TYPE_LENGTH (type) = 0; | |
13830 | } | |
13831 | ||
137033e9 JB |
13832 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
13833 | declared as private in the package spec, and then defined only | |
13834 | inside the package body. Such types are known as Taft Amendment | |
13835 | Types. When another package uses such a type, an incomplete DIE | |
13836 | may be generated by the compiler. */ | |
02eb380e | 13837 | if (die_is_declaration (die, cu)) |
876cecd0 | 13838 | TYPE_STUB (type) = 1; |
02eb380e | 13839 | |
0626fc76 TT |
13840 | /* Finish the creation of this type by using the enum's children. |
13841 | We must call this even when the underlying type has been provided | |
13842 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
13843 | update_enumeration_type_from_children (die, type, cu); |
13844 | ||
0626fc76 TT |
13845 | /* If this type has an underlying type that is not a stub, then we |
13846 | may use its attributes. We always use the "unsigned" attribute | |
13847 | in this situation, because ordinarily we guess whether the type | |
13848 | is unsigned -- but the guess can be wrong and the underlying type | |
13849 | can tell us the reality. However, we defer to a local size | |
13850 | attribute if one exists, because this lets the compiler override | |
13851 | the underlying type if needed. */ | |
13852 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
13853 | { | |
13854 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
13855 | if (TYPE_LENGTH (type) == 0) | |
13856 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
13857 | } | |
13858 | ||
3d567982 TT |
13859 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
13860 | ||
f792889a | 13861 | return set_die_type (die, type, cu); |
134d01f1 DJ |
13862 | } |
13863 | ||
13864 | /* Given a pointer to a die which begins an enumeration, process all | |
13865 | the dies that define the members of the enumeration, and create the | |
13866 | symbol for the enumeration type. | |
13867 | ||
13868 | NOTE: We reverse the order of the element list. */ | |
13869 | ||
13870 | static void | |
13871 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13872 | { | |
f792889a | 13873 | struct type *this_type; |
134d01f1 | 13874 | |
f792889a DJ |
13875 | this_type = get_die_type (die, cu); |
13876 | if (this_type == NULL) | |
13877 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 13878 | |
639d11d3 | 13879 | if (die->child != NULL) |
c906108c | 13880 | { |
9dc481d3 DE |
13881 | struct die_info *child_die; |
13882 | struct symbol *sym; | |
13883 | struct field *fields = NULL; | |
13884 | int num_fields = 0; | |
15d034d0 | 13885 | const char *name; |
9dc481d3 | 13886 | |
639d11d3 | 13887 | child_die = die->child; |
c906108c SS |
13888 | while (child_die && child_die->tag) |
13889 | { | |
13890 | if (child_die->tag != DW_TAG_enumerator) | |
13891 | { | |
e7c27a73 | 13892 | process_die (child_die, cu); |
c906108c SS |
13893 | } |
13894 | else | |
13895 | { | |
39cbfefa DJ |
13896 | name = dwarf2_name (child_die, cu); |
13897 | if (name) | |
c906108c | 13898 | { |
f792889a | 13899 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
13900 | |
13901 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13902 | { | |
13903 | fields = (struct field *) | |
13904 | xrealloc (fields, | |
13905 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13906 | * sizeof (struct field)); |
c906108c SS |
13907 | } |
13908 | ||
3567439c | 13909 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 13910 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 13911 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
13912 | FIELD_BITSIZE (fields[num_fields]) = 0; |
13913 | ||
13914 | num_fields++; | |
13915 | } | |
13916 | } | |
13917 | ||
13918 | child_die = sibling_die (child_die); | |
13919 | } | |
13920 | ||
13921 | if (num_fields) | |
13922 | { | |
f792889a DJ |
13923 | TYPE_NFIELDS (this_type) = num_fields; |
13924 | TYPE_FIELDS (this_type) = (struct field *) | |
13925 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
13926 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 13927 | sizeof (struct field) * num_fields); |
b8c9b27d | 13928 | xfree (fields); |
c906108c | 13929 | } |
c906108c | 13930 | } |
134d01f1 | 13931 | |
6c83ed52 TT |
13932 | /* If we are reading an enum from a .debug_types unit, and the enum |
13933 | is a declaration, and the enum is not the signatured type in the | |
13934 | unit, then we do not want to add a symbol for it. Adding a | |
13935 | symbol would in some cases obscure the true definition of the | |
13936 | enum, giving users an incomplete type when the definition is | |
13937 | actually available. Note that we do not want to do this for all | |
13938 | enums which are just declarations, because C++0x allows forward | |
13939 | enum declarations. */ | |
3019eac3 | 13940 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
13941 | && die_is_declaration (die, cu)) |
13942 | { | |
52dc124a | 13943 | struct signatured_type *sig_type; |
6c83ed52 | 13944 | |
c0f78cd4 | 13945 | sig_type = (struct signatured_type *) cu->per_cu; |
3019eac3 DE |
13946 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
13947 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
13948 | return; |
13949 | } | |
13950 | ||
f792889a | 13951 | new_symbol (die, this_type, cu); |
c906108c SS |
13952 | } |
13953 | ||
13954 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
13955 | the DIE's type field. For now, this only handles one dimensional | |
13956 | arrays. */ | |
13957 | ||
f792889a | 13958 | static struct type * |
e7c27a73 | 13959 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13960 | { |
e7c27a73 | 13961 | struct objfile *objfile = cu->objfile; |
c906108c | 13962 | struct die_info *child_die; |
7e314c57 | 13963 | struct type *type; |
c906108c SS |
13964 | struct type *element_type, *range_type, *index_type; |
13965 | struct type **range_types = NULL; | |
13966 | struct attribute *attr; | |
13967 | int ndim = 0; | |
13968 | struct cleanup *back_to; | |
15d034d0 | 13969 | const char *name; |
dc53a7ad | 13970 | unsigned int bit_stride = 0; |
c906108c | 13971 | |
e7c27a73 | 13972 | element_type = die_type (die, cu); |
c906108c | 13973 | |
7e314c57 JK |
13974 | /* The die_type call above may have already set the type for this DIE. */ |
13975 | type = get_die_type (die, cu); | |
13976 | if (type) | |
13977 | return type; | |
13978 | ||
dc53a7ad JB |
13979 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
13980 | if (attr != NULL) | |
13981 | bit_stride = DW_UNSND (attr) * 8; | |
13982 | ||
13983 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
13984 | if (attr != NULL) | |
13985 | bit_stride = DW_UNSND (attr); | |
13986 | ||
c906108c SS |
13987 | /* Irix 6.2 native cc creates array types without children for |
13988 | arrays with unspecified length. */ | |
639d11d3 | 13989 | if (die->child == NULL) |
c906108c | 13990 | { |
46bf5051 | 13991 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 13992 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad JB |
13993 | type = create_array_type_with_stride (NULL, element_type, range_type, |
13994 | bit_stride); | |
f792889a | 13995 | return set_die_type (die, type, cu); |
c906108c SS |
13996 | } |
13997 | ||
13998 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 13999 | child_die = die->child; |
c906108c SS |
14000 | while (child_die && child_die->tag) |
14001 | { | |
14002 | if (child_die->tag == DW_TAG_subrange_type) | |
14003 | { | |
f792889a | 14004 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 14005 | |
f792889a | 14006 | if (child_type != NULL) |
a02abb62 | 14007 | { |
0963b4bd MS |
14008 | /* The range type was succesfully read. Save it for the |
14009 | array type creation. */ | |
a02abb62 JB |
14010 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
14011 | { | |
14012 | range_types = (struct type **) | |
14013 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
14014 | * sizeof (struct type *)); | |
14015 | if (ndim == 0) | |
14016 | make_cleanup (free_current_contents, &range_types); | |
14017 | } | |
f792889a | 14018 | range_types[ndim++] = child_type; |
a02abb62 | 14019 | } |
c906108c SS |
14020 | } |
14021 | child_die = sibling_die (child_die); | |
14022 | } | |
14023 | ||
14024 | /* Dwarf2 dimensions are output from left to right, create the | |
14025 | necessary array types in backwards order. */ | |
7ca2d3a3 | 14026 | |
c906108c | 14027 | type = element_type; |
7ca2d3a3 DL |
14028 | |
14029 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
14030 | { | |
14031 | int i = 0; | |
9a619af0 | 14032 | |
7ca2d3a3 | 14033 | while (i < ndim) |
dc53a7ad JB |
14034 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
14035 | bit_stride); | |
7ca2d3a3 DL |
14036 | } |
14037 | else | |
14038 | { | |
14039 | while (ndim-- > 0) | |
dc53a7ad JB |
14040 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
14041 | bit_stride); | |
7ca2d3a3 | 14042 | } |
c906108c | 14043 | |
f5f8a009 EZ |
14044 | /* Understand Dwarf2 support for vector types (like they occur on |
14045 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
14046 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
14047 | custom vendor extension. The main difference between a regular | |
14048 | array and the vector variant is that vectors are passed by value | |
14049 | to functions. */ | |
e142c38c | 14050 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 14051 | if (attr) |
ea37ba09 | 14052 | make_vector_type (type); |
f5f8a009 | 14053 | |
dbc98a8b KW |
14054 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
14055 | implementation may choose to implement triple vectors using this | |
14056 | attribute. */ | |
14057 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
14058 | if (attr) | |
14059 | { | |
14060 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
14061 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
14062 | else | |
3e43a32a MS |
14063 | complaint (&symfile_complaints, |
14064 | _("DW_AT_byte_size for array type smaller " | |
14065 | "than the total size of elements")); | |
dbc98a8b KW |
14066 | } |
14067 | ||
39cbfefa DJ |
14068 | name = dwarf2_name (die, cu); |
14069 | if (name) | |
14070 | TYPE_NAME (type) = name; | |
6e70227d | 14071 | |
0963b4bd | 14072 | /* Install the type in the die. */ |
7e314c57 JK |
14073 | set_die_type (die, type, cu); |
14074 | ||
14075 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
14076 | set_descriptive_type (type, die, cu); |
14077 | ||
c906108c SS |
14078 | do_cleanups (back_to); |
14079 | ||
7e314c57 | 14080 | return type; |
c906108c SS |
14081 | } |
14082 | ||
7ca2d3a3 | 14083 | static enum dwarf_array_dim_ordering |
6e70227d | 14084 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
14085 | { |
14086 | struct attribute *attr; | |
14087 | ||
14088 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
14089 | ||
aead7601 SM |
14090 | if (attr) |
14091 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 14092 | |
0963b4bd MS |
14093 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
14094 | opposite order to the dwarf2 specification, but data is still | |
14095 | laid out as per normal fortran. | |
7ca2d3a3 | 14096 | |
0963b4bd MS |
14097 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
14098 | version checking. */ | |
7ca2d3a3 | 14099 | |
905e0470 PM |
14100 | if (cu->language == language_fortran |
14101 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
14102 | { |
14103 | return DW_ORD_row_major; | |
14104 | } | |
14105 | ||
6e70227d | 14106 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
14107 | { |
14108 | case array_column_major: | |
14109 | return DW_ORD_col_major; | |
14110 | case array_row_major: | |
14111 | default: | |
14112 | return DW_ORD_row_major; | |
14113 | }; | |
14114 | } | |
14115 | ||
72019c9c | 14116 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 14117 | the DIE's type field. */ |
72019c9c | 14118 | |
f792889a | 14119 | static struct type * |
72019c9c GM |
14120 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
14121 | { | |
7e314c57 JK |
14122 | struct type *domain_type, *set_type; |
14123 | struct attribute *attr; | |
f792889a | 14124 | |
7e314c57 JK |
14125 | domain_type = die_type (die, cu); |
14126 | ||
14127 | /* The die_type call above may have already set the type for this DIE. */ | |
14128 | set_type = get_die_type (die, cu); | |
14129 | if (set_type) | |
14130 | return set_type; | |
14131 | ||
14132 | set_type = create_set_type (NULL, domain_type); | |
14133 | ||
14134 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
14135 | if (attr) |
14136 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 14137 | |
f792889a | 14138 | return set_die_type (die, set_type, cu); |
72019c9c | 14139 | } |
7ca2d3a3 | 14140 | |
0971de02 TT |
14141 | /* A helper for read_common_block that creates a locexpr baton. |
14142 | SYM is the symbol which we are marking as computed. | |
14143 | COMMON_DIE is the DIE for the common block. | |
14144 | COMMON_LOC is the location expression attribute for the common | |
14145 | block itself. | |
14146 | MEMBER_LOC is the location expression attribute for the particular | |
14147 | member of the common block that we are processing. | |
14148 | CU is the CU from which the above come. */ | |
14149 | ||
14150 | static void | |
14151 | mark_common_block_symbol_computed (struct symbol *sym, | |
14152 | struct die_info *common_die, | |
14153 | struct attribute *common_loc, | |
14154 | struct attribute *member_loc, | |
14155 | struct dwarf2_cu *cu) | |
14156 | { | |
14157 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
14158 | struct dwarf2_locexpr_baton *baton; | |
14159 | gdb_byte *ptr; | |
14160 | unsigned int cu_off; | |
14161 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
14162 | LONGEST offset = 0; | |
14163 | ||
14164 | gdb_assert (common_loc && member_loc); | |
14165 | gdb_assert (attr_form_is_block (common_loc)); | |
14166 | gdb_assert (attr_form_is_block (member_loc) | |
14167 | || attr_form_is_constant (member_loc)); | |
14168 | ||
8d749320 | 14169 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
14170 | baton->per_cu = cu->per_cu; |
14171 | gdb_assert (baton->per_cu); | |
14172 | ||
14173 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
14174 | ||
14175 | if (attr_form_is_constant (member_loc)) | |
14176 | { | |
14177 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
14178 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
14179 | } | |
14180 | else | |
14181 | baton->size += DW_BLOCK (member_loc)->size; | |
14182 | ||
224c3ddb | 14183 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
14184 | baton->data = ptr; |
14185 | ||
14186 | *ptr++ = DW_OP_call4; | |
14187 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
14188 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
14189 | ptr += 4; | |
14190 | ||
14191 | if (attr_form_is_constant (member_loc)) | |
14192 | { | |
14193 | *ptr++ = DW_OP_addr; | |
14194 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
14195 | ptr += cu->header.addr_size; | |
14196 | } | |
14197 | else | |
14198 | { | |
14199 | /* We have to copy the data here, because DW_OP_call4 will only | |
14200 | use a DW_AT_location attribute. */ | |
14201 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
14202 | ptr += DW_BLOCK (member_loc)->size; | |
14203 | } | |
14204 | ||
14205 | *ptr++ = DW_OP_plus; | |
14206 | gdb_assert (ptr - baton->data == baton->size); | |
14207 | ||
0971de02 | 14208 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 14209 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
14210 | } |
14211 | ||
4357ac6c TT |
14212 | /* Create appropriate locally-scoped variables for all the |
14213 | DW_TAG_common_block entries. Also create a struct common_block | |
14214 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
14215 | is used to sepate the common blocks name namespace from regular | |
14216 | variable names. */ | |
c906108c SS |
14217 | |
14218 | static void | |
e7c27a73 | 14219 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14220 | { |
0971de02 TT |
14221 | struct attribute *attr; |
14222 | ||
14223 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
14224 | if (attr) | |
14225 | { | |
14226 | /* Support the .debug_loc offsets. */ | |
14227 | if (attr_form_is_block (attr)) | |
14228 | { | |
14229 | /* Ok. */ | |
14230 | } | |
14231 | else if (attr_form_is_section_offset (attr)) | |
14232 | { | |
14233 | dwarf2_complex_location_expr_complaint (); | |
14234 | attr = NULL; | |
14235 | } | |
14236 | else | |
14237 | { | |
14238 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
14239 | "common block member"); | |
14240 | attr = NULL; | |
14241 | } | |
14242 | } | |
14243 | ||
639d11d3 | 14244 | if (die->child != NULL) |
c906108c | 14245 | { |
4357ac6c TT |
14246 | struct objfile *objfile = cu->objfile; |
14247 | struct die_info *child_die; | |
14248 | size_t n_entries = 0, size; | |
14249 | struct common_block *common_block; | |
14250 | struct symbol *sym; | |
74ac6d43 | 14251 | |
4357ac6c TT |
14252 | for (child_die = die->child; |
14253 | child_die && child_die->tag; | |
14254 | child_die = sibling_die (child_die)) | |
14255 | ++n_entries; | |
14256 | ||
14257 | size = (sizeof (struct common_block) | |
14258 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
14259 | common_block |
14260 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
14261 | size); | |
4357ac6c TT |
14262 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
14263 | common_block->n_entries = 0; | |
14264 | ||
14265 | for (child_die = die->child; | |
14266 | child_die && child_die->tag; | |
14267 | child_die = sibling_die (child_die)) | |
14268 | { | |
14269 | /* Create the symbol in the DW_TAG_common_block block in the current | |
14270 | symbol scope. */ | |
e7c27a73 | 14271 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
14272 | if (sym != NULL) |
14273 | { | |
14274 | struct attribute *member_loc; | |
14275 | ||
14276 | common_block->contents[common_block->n_entries++] = sym; | |
14277 | ||
14278 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
14279 | cu); | |
14280 | if (member_loc) | |
14281 | { | |
14282 | /* GDB has handled this for a long time, but it is | |
14283 | not specified by DWARF. It seems to have been | |
14284 | emitted by gfortran at least as recently as: | |
14285 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
14286 | complaint (&symfile_complaints, | |
14287 | _("Variable in common block has " | |
14288 | "DW_AT_data_member_location " | |
14289 | "- DIE at 0x%x [in module %s]"), | |
4262abfb JK |
14290 | child_die->offset.sect_off, |
14291 | objfile_name (cu->objfile)); | |
0971de02 TT |
14292 | |
14293 | if (attr_form_is_section_offset (member_loc)) | |
14294 | dwarf2_complex_location_expr_complaint (); | |
14295 | else if (attr_form_is_constant (member_loc) | |
14296 | || attr_form_is_block (member_loc)) | |
14297 | { | |
14298 | if (attr) | |
14299 | mark_common_block_symbol_computed (sym, die, attr, | |
14300 | member_loc, cu); | |
14301 | } | |
14302 | else | |
14303 | dwarf2_complex_location_expr_complaint (); | |
14304 | } | |
14305 | } | |
c906108c | 14306 | } |
4357ac6c TT |
14307 | |
14308 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
14309 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
14310 | } |
14311 | } | |
14312 | ||
0114d602 | 14313 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 14314 | |
0114d602 DJ |
14315 | static struct type * |
14316 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 14317 | { |
e7c27a73 | 14318 | struct objfile *objfile = cu->objfile; |
0114d602 | 14319 | const char *previous_prefix, *name; |
9219021c | 14320 | int is_anonymous; |
0114d602 DJ |
14321 | struct type *type; |
14322 | ||
14323 | /* For extensions, reuse the type of the original namespace. */ | |
14324 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
14325 | { | |
14326 | struct die_info *ext_die; | |
14327 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 14328 | |
0114d602 DJ |
14329 | ext_die = dwarf2_extension (die, &ext_cu); |
14330 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
14331 | |
14332 | /* EXT_CU may not be the same as CU. | |
02142a6c | 14333 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
14334 | return set_die_type (die, type, cu); |
14335 | } | |
9219021c | 14336 | |
e142c38c | 14337 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
14338 | |
14339 | /* Now build the name of the current namespace. */ | |
14340 | ||
0114d602 DJ |
14341 | previous_prefix = determine_prefix (die, cu); |
14342 | if (previous_prefix[0] != '\0') | |
14343 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 14344 | previous_prefix, name, 0, cu); |
0114d602 DJ |
14345 | |
14346 | /* Create the type. */ | |
19f392bc | 14347 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 DJ |
14348 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
14349 | ||
60531b24 | 14350 | return set_die_type (die, type, cu); |
0114d602 DJ |
14351 | } |
14352 | ||
22cee43f | 14353 | /* Read a namespace scope. */ |
0114d602 DJ |
14354 | |
14355 | static void | |
14356 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
14357 | { | |
14358 | struct objfile *objfile = cu->objfile; | |
0114d602 | 14359 | int is_anonymous; |
9219021c | 14360 | |
5c4e30ca DC |
14361 | /* Add a symbol associated to this if we haven't seen the namespace |
14362 | before. Also, add a using directive if it's an anonymous | |
14363 | namespace. */ | |
9219021c | 14364 | |
f2f0e013 | 14365 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
14366 | { |
14367 | struct type *type; | |
14368 | ||
0114d602 | 14369 | type = read_type_die (die, cu); |
e7c27a73 | 14370 | new_symbol (die, type, cu); |
5c4e30ca | 14371 | |
e8e80198 | 14372 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 14373 | if (is_anonymous) |
0114d602 DJ |
14374 | { |
14375 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 14376 | |
22cee43f PMR |
14377 | add_using_directive (using_directives (cu->language), |
14378 | previous_prefix, TYPE_NAME (type), NULL, | |
14379 | NULL, NULL, 0, &objfile->objfile_obstack); | |
0114d602 | 14380 | } |
5c4e30ca | 14381 | } |
9219021c | 14382 | |
639d11d3 | 14383 | if (die->child != NULL) |
d9fa45fe | 14384 | { |
639d11d3 | 14385 | struct die_info *child_die = die->child; |
6e70227d | 14386 | |
d9fa45fe DC |
14387 | while (child_die && child_die->tag) |
14388 | { | |
e7c27a73 | 14389 | process_die (child_die, cu); |
d9fa45fe DC |
14390 | child_die = sibling_die (child_die); |
14391 | } | |
14392 | } | |
38d518c9 EZ |
14393 | } |
14394 | ||
f55ee35c JK |
14395 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
14396 | imported module. Still we need that type as local Fortran "use ... only" | |
14397 | declaration imports depend on the created type in determine_prefix. */ | |
14398 | ||
14399 | static struct type * | |
14400 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
14401 | { | |
14402 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 14403 | const char *module_name; |
f55ee35c JK |
14404 | struct type *type; |
14405 | ||
14406 | module_name = dwarf2_name (die, cu); | |
14407 | if (!module_name) | |
3e43a32a MS |
14408 | complaint (&symfile_complaints, |
14409 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 14410 | die->offset.sect_off); |
19f392bc | 14411 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c JK |
14412 | |
14413 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
14414 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
14415 | ||
14416 | return set_die_type (die, type, cu); | |
14417 | } | |
14418 | ||
5d7cb8df JK |
14419 | /* Read a Fortran module. */ |
14420 | ||
14421 | static void | |
14422 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
14423 | { | |
14424 | struct die_info *child_die = die->child; | |
530e8392 KB |
14425 | struct type *type; |
14426 | ||
14427 | type = read_type_die (die, cu); | |
14428 | new_symbol (die, type, cu); | |
5d7cb8df | 14429 | |
5d7cb8df JK |
14430 | while (child_die && child_die->tag) |
14431 | { | |
14432 | process_die (child_die, cu); | |
14433 | child_die = sibling_die (child_die); | |
14434 | } | |
14435 | } | |
14436 | ||
38d518c9 EZ |
14437 | /* Return the name of the namespace represented by DIE. Set |
14438 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
14439 | namespace. */ | |
14440 | ||
14441 | static const char * | |
e142c38c | 14442 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
14443 | { |
14444 | struct die_info *current_die; | |
14445 | const char *name = NULL; | |
14446 | ||
14447 | /* Loop through the extensions until we find a name. */ | |
14448 | ||
14449 | for (current_die = die; | |
14450 | current_die != NULL; | |
f2f0e013 | 14451 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 14452 | { |
96553a0c DE |
14453 | /* We don't use dwarf2_name here so that we can detect the absence |
14454 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 14455 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 14456 | |
38d518c9 EZ |
14457 | if (name != NULL) |
14458 | break; | |
14459 | } | |
14460 | ||
14461 | /* Is it an anonymous namespace? */ | |
14462 | ||
14463 | *is_anonymous = (name == NULL); | |
14464 | if (*is_anonymous) | |
2b1dbab0 | 14465 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
14466 | |
14467 | return name; | |
d9fa45fe DC |
14468 | } |
14469 | ||
c906108c SS |
14470 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
14471 | the user defined type vector. */ | |
14472 | ||
f792889a | 14473 | static struct type * |
e7c27a73 | 14474 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14475 | { |
5e2b427d | 14476 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 14477 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 14478 | struct type *type; |
8b2dbe47 KB |
14479 | struct attribute *attr_byte_size; |
14480 | struct attribute *attr_address_class; | |
14481 | int byte_size, addr_class; | |
7e314c57 JK |
14482 | struct type *target_type; |
14483 | ||
14484 | target_type = die_type (die, cu); | |
c906108c | 14485 | |
7e314c57 JK |
14486 | /* The die_type call above may have already set the type for this DIE. */ |
14487 | type = get_die_type (die, cu); | |
14488 | if (type) | |
14489 | return type; | |
14490 | ||
14491 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 14492 | |
e142c38c | 14493 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
14494 | if (attr_byte_size) |
14495 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 14496 | else |
8b2dbe47 KB |
14497 | byte_size = cu_header->addr_size; |
14498 | ||
e142c38c | 14499 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
14500 | if (attr_address_class) |
14501 | addr_class = DW_UNSND (attr_address_class); | |
14502 | else | |
14503 | addr_class = DW_ADDR_none; | |
14504 | ||
14505 | /* If the pointer size or address class is different than the | |
14506 | default, create a type variant marked as such and set the | |
14507 | length accordingly. */ | |
14508 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 14509 | { |
5e2b427d | 14510 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
14511 | { |
14512 | int type_flags; | |
14513 | ||
849957d9 | 14514 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 14515 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
14516 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
14517 | == 0); | |
8b2dbe47 KB |
14518 | type = make_type_with_address_space (type, type_flags); |
14519 | } | |
14520 | else if (TYPE_LENGTH (type) != byte_size) | |
14521 | { | |
3e43a32a MS |
14522 | complaint (&symfile_complaints, |
14523 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 14524 | } |
6e70227d | 14525 | else |
9a619af0 MS |
14526 | { |
14527 | /* Should we also complain about unhandled address classes? */ | |
14528 | } | |
c906108c | 14529 | } |
8b2dbe47 KB |
14530 | |
14531 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 14532 | return set_die_type (die, type, cu); |
c906108c SS |
14533 | } |
14534 | ||
14535 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
14536 | the user defined type vector. */ | |
14537 | ||
f792889a | 14538 | static struct type * |
e7c27a73 | 14539 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
14540 | { |
14541 | struct type *type; | |
14542 | struct type *to_type; | |
14543 | struct type *domain; | |
14544 | ||
e7c27a73 DJ |
14545 | to_type = die_type (die, cu); |
14546 | domain = die_containing_type (die, cu); | |
0d5de010 | 14547 | |
7e314c57 JK |
14548 | /* The calls above may have already set the type for this DIE. */ |
14549 | type = get_die_type (die, cu); | |
14550 | if (type) | |
14551 | return type; | |
14552 | ||
0d5de010 DJ |
14553 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
14554 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
14555 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
14556 | { | |
14557 | struct type *new_type = alloc_type (cu->objfile); | |
14558 | ||
14559 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
14560 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
14561 | TYPE_VARARGS (to_type)); | |
14562 | type = lookup_methodptr_type (new_type); | |
14563 | } | |
0d5de010 DJ |
14564 | else |
14565 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 14566 | |
f792889a | 14567 | return set_die_type (die, type, cu); |
c906108c SS |
14568 | } |
14569 | ||
14570 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
14571 | the user defined type vector. */ | |
14572 | ||
f792889a | 14573 | static struct type * |
e7c27a73 | 14574 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14575 | { |
e7c27a73 | 14576 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 14577 | struct type *type, *target_type; |
c906108c SS |
14578 | struct attribute *attr; |
14579 | ||
7e314c57 JK |
14580 | target_type = die_type (die, cu); |
14581 | ||
14582 | /* The die_type call above may have already set the type for this DIE. */ | |
14583 | type = get_die_type (die, cu); | |
14584 | if (type) | |
14585 | return type; | |
14586 | ||
14587 | type = lookup_reference_type (target_type); | |
e142c38c | 14588 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14589 | if (attr) |
14590 | { | |
14591 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
14592 | } | |
14593 | else | |
14594 | { | |
107d2387 | 14595 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 14596 | } |
f792889a | 14597 | return set_die_type (die, type, cu); |
c906108c SS |
14598 | } |
14599 | ||
cf363f18 MW |
14600 | /* Add the given cv-qualifiers to the element type of the array. GCC |
14601 | outputs DWARF type qualifiers that apply to an array, not the | |
14602 | element type. But GDB relies on the array element type to carry | |
14603 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
14604 | specification. */ | |
14605 | ||
14606 | static struct type * | |
14607 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
14608 | struct type *base_type, int cnst, int voltl) | |
14609 | { | |
14610 | struct type *el_type, *inner_array; | |
14611 | ||
14612 | base_type = copy_type (base_type); | |
14613 | inner_array = base_type; | |
14614 | ||
14615 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
14616 | { | |
14617 | TYPE_TARGET_TYPE (inner_array) = | |
14618 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
14619 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
14620 | } | |
14621 | ||
14622 | el_type = TYPE_TARGET_TYPE (inner_array); | |
14623 | cnst |= TYPE_CONST (el_type); | |
14624 | voltl |= TYPE_VOLATILE (el_type); | |
14625 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
14626 | ||
14627 | return set_die_type (die, base_type, cu); | |
14628 | } | |
14629 | ||
f792889a | 14630 | static struct type * |
e7c27a73 | 14631 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14632 | { |
f792889a | 14633 | struct type *base_type, *cv_type; |
c906108c | 14634 | |
e7c27a73 | 14635 | base_type = die_type (die, cu); |
7e314c57 JK |
14636 | |
14637 | /* The die_type call above may have already set the type for this DIE. */ | |
14638 | cv_type = get_die_type (die, cu); | |
14639 | if (cv_type) | |
14640 | return cv_type; | |
14641 | ||
2f608a3a KW |
14642 | /* In case the const qualifier is applied to an array type, the element type |
14643 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
14644 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 14645 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 14646 | |
f792889a DJ |
14647 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
14648 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14649 | } |
14650 | ||
f792889a | 14651 | static struct type * |
e7c27a73 | 14652 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14653 | { |
f792889a | 14654 | struct type *base_type, *cv_type; |
c906108c | 14655 | |
e7c27a73 | 14656 | base_type = die_type (die, cu); |
7e314c57 JK |
14657 | |
14658 | /* The die_type call above may have already set the type for this DIE. */ | |
14659 | cv_type = get_die_type (die, cu); | |
14660 | if (cv_type) | |
14661 | return cv_type; | |
14662 | ||
cf363f18 MW |
14663 | /* In case the volatile qualifier is applied to an array type, the |
14664 | element type is so qualified, not the array type (section 6.7.3 | |
14665 | of C99). */ | |
14666 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
14667 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
14668 | ||
f792889a DJ |
14669 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
14670 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14671 | } |
14672 | ||
06d66ee9 TT |
14673 | /* Handle DW_TAG_restrict_type. */ |
14674 | ||
14675 | static struct type * | |
14676 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
14677 | { | |
14678 | struct type *base_type, *cv_type; | |
14679 | ||
14680 | base_type = die_type (die, cu); | |
14681 | ||
14682 | /* The die_type call above may have already set the type for this DIE. */ | |
14683 | cv_type = get_die_type (die, cu); | |
14684 | if (cv_type) | |
14685 | return cv_type; | |
14686 | ||
14687 | cv_type = make_restrict_type (base_type); | |
14688 | return set_die_type (die, cv_type, cu); | |
14689 | } | |
14690 | ||
a2c2acaf MW |
14691 | /* Handle DW_TAG_atomic_type. */ |
14692 | ||
14693 | static struct type * | |
14694 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
14695 | { | |
14696 | struct type *base_type, *cv_type; | |
14697 | ||
14698 | base_type = die_type (die, cu); | |
14699 | ||
14700 | /* The die_type call above may have already set the type for this DIE. */ | |
14701 | cv_type = get_die_type (die, cu); | |
14702 | if (cv_type) | |
14703 | return cv_type; | |
14704 | ||
14705 | cv_type = make_atomic_type (base_type); | |
14706 | return set_die_type (die, cv_type, cu); | |
14707 | } | |
14708 | ||
c906108c SS |
14709 | /* Extract all information from a DW_TAG_string_type DIE and add to |
14710 | the user defined type vector. It isn't really a user defined type, | |
14711 | but it behaves like one, with other DIE's using an AT_user_def_type | |
14712 | attribute to reference it. */ | |
14713 | ||
f792889a | 14714 | static struct type * |
e7c27a73 | 14715 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14716 | { |
e7c27a73 | 14717 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 14718 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14719 | struct type *type, *range_type, *index_type, *char_type; |
14720 | struct attribute *attr; | |
14721 | unsigned int length; | |
14722 | ||
e142c38c | 14723 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
14724 | if (attr) |
14725 | { | |
14726 | length = DW_UNSND (attr); | |
14727 | } | |
14728 | else | |
14729 | { | |
0963b4bd | 14730 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 14731 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
14732 | if (attr) |
14733 | { | |
14734 | length = DW_UNSND (attr); | |
14735 | } | |
14736 | else | |
14737 | { | |
14738 | length = 1; | |
14739 | } | |
c906108c | 14740 | } |
6ccb9162 | 14741 | |
46bf5051 | 14742 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 14743 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
14744 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
14745 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 14746 | |
f792889a | 14747 | return set_die_type (die, type, cu); |
c906108c SS |
14748 | } |
14749 | ||
4d804846 JB |
14750 | /* Assuming that DIE corresponds to a function, returns nonzero |
14751 | if the function is prototyped. */ | |
14752 | ||
14753 | static int | |
14754 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
14755 | { | |
14756 | struct attribute *attr; | |
14757 | ||
14758 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
14759 | if (attr && (DW_UNSND (attr) != 0)) | |
14760 | return 1; | |
14761 | ||
14762 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
14763 | is only meaninful for C, but the concept also extends to other | |
14764 | languages that allow unprototyped functions (Eg: Objective C). | |
14765 | For all other languages, assume that functions are always | |
14766 | prototyped. */ | |
14767 | if (cu->language != language_c | |
14768 | && cu->language != language_objc | |
14769 | && cu->language != language_opencl) | |
14770 | return 1; | |
14771 | ||
14772 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
14773 | prototyped and unprototyped functions; default to prototyped, | |
14774 | since that is more common in modern code (and RealView warns | |
14775 | about unprototyped functions). */ | |
14776 | if (producer_is_realview (cu->producer)) | |
14777 | return 1; | |
14778 | ||
14779 | return 0; | |
14780 | } | |
14781 | ||
c906108c SS |
14782 | /* Handle DIES due to C code like: |
14783 | ||
14784 | struct foo | |
c5aa993b JM |
14785 | { |
14786 | int (*funcp)(int a, long l); | |
14787 | int b; | |
14788 | }; | |
c906108c | 14789 | |
0963b4bd | 14790 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 14791 | |
f792889a | 14792 | static struct type * |
e7c27a73 | 14793 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14794 | { |
bb5ed363 | 14795 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
14796 | struct type *type; /* Type that this function returns. */ |
14797 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
14798 | struct attribute *attr; |
14799 | ||
e7c27a73 | 14800 | type = die_type (die, cu); |
7e314c57 JK |
14801 | |
14802 | /* The die_type call above may have already set the type for this DIE. */ | |
14803 | ftype = get_die_type (die, cu); | |
14804 | if (ftype) | |
14805 | return ftype; | |
14806 | ||
0c8b41f1 | 14807 | ftype = lookup_function_type (type); |
c906108c | 14808 | |
4d804846 | 14809 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 14810 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 14811 | |
c055b101 CV |
14812 | /* Store the calling convention in the type if it's available in |
14813 | the subroutine die. Otherwise set the calling convention to | |
14814 | the default value DW_CC_normal. */ | |
14815 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
14816 | if (attr) |
14817 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
14818 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
14819 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
14820 | else | |
14821 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 14822 | |
743649fd MW |
14823 | /* Record whether the function returns normally to its caller or not |
14824 | if the DWARF producer set that information. */ | |
14825 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
14826 | if (attr && (DW_UNSND (attr) != 0)) | |
14827 | TYPE_NO_RETURN (ftype) = 1; | |
14828 | ||
76c10ea2 GM |
14829 | /* We need to add the subroutine type to the die immediately so |
14830 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 14831 | declared as the same subroutine type. */ |
76c10ea2 | 14832 | set_die_type (die, ftype, cu); |
6e70227d | 14833 | |
639d11d3 | 14834 | if (die->child != NULL) |
c906108c | 14835 | { |
bb5ed363 | 14836 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 14837 | struct die_info *child_die; |
8072405b | 14838 | int nparams, iparams; |
c906108c SS |
14839 | |
14840 | /* Count the number of parameters. | |
14841 | FIXME: GDB currently ignores vararg functions, but knows about | |
14842 | vararg member functions. */ | |
8072405b | 14843 | nparams = 0; |
639d11d3 | 14844 | child_die = die->child; |
c906108c SS |
14845 | while (child_die && child_die->tag) |
14846 | { | |
14847 | if (child_die->tag == DW_TAG_formal_parameter) | |
14848 | nparams++; | |
14849 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 14850 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
14851 | child_die = sibling_die (child_die); |
14852 | } | |
14853 | ||
14854 | /* Allocate storage for parameters and fill them in. */ | |
14855 | TYPE_NFIELDS (ftype) = nparams; | |
14856 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 14857 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 14858 | |
8072405b JK |
14859 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
14860 | even if we error out during the parameters reading below. */ | |
14861 | for (iparams = 0; iparams < nparams; iparams++) | |
14862 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
14863 | ||
14864 | iparams = 0; | |
639d11d3 | 14865 | child_die = die->child; |
c906108c SS |
14866 | while (child_die && child_die->tag) |
14867 | { | |
14868 | if (child_die->tag == DW_TAG_formal_parameter) | |
14869 | { | |
3ce3b1ba PA |
14870 | struct type *arg_type; |
14871 | ||
14872 | /* DWARF version 2 has no clean way to discern C++ | |
14873 | static and non-static member functions. G++ helps | |
14874 | GDB by marking the first parameter for non-static | |
14875 | member functions (which is the this pointer) as | |
14876 | artificial. We pass this information to | |
14877 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
14878 | ||
14879 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
14880 | 4.5 does not yet generate. */ | |
e142c38c | 14881 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
14882 | if (attr) |
14883 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
14884 | else | |
9c37b5ae | 14885 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
14886 | arg_type = die_type (child_die, cu); |
14887 | ||
14888 | /* RealView does not mark THIS as const, which the testsuite | |
14889 | expects. GCC marks THIS as const in method definitions, | |
14890 | but not in the class specifications (GCC PR 43053). */ | |
14891 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
14892 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
14893 | { | |
14894 | int is_this = 0; | |
14895 | struct dwarf2_cu *arg_cu = cu; | |
14896 | const char *name = dwarf2_name (child_die, cu); | |
14897 | ||
14898 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
14899 | if (attr) | |
14900 | { | |
14901 | /* If the compiler emits this, use it. */ | |
14902 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
14903 | is_this = 1; | |
14904 | } | |
14905 | else if (name && strcmp (name, "this") == 0) | |
14906 | /* Function definitions will have the argument names. */ | |
14907 | is_this = 1; | |
14908 | else if (name == NULL && iparams == 0) | |
14909 | /* Declarations may not have the names, so like | |
14910 | elsewhere in GDB, assume an artificial first | |
14911 | argument is "this". */ | |
14912 | is_this = 1; | |
14913 | ||
14914 | if (is_this) | |
14915 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
14916 | arg_type, 0); | |
14917 | } | |
14918 | ||
14919 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
14920 | iparams++; |
14921 | } | |
14922 | child_die = sibling_die (child_die); | |
14923 | } | |
14924 | } | |
14925 | ||
76c10ea2 | 14926 | return ftype; |
c906108c SS |
14927 | } |
14928 | ||
f792889a | 14929 | static struct type * |
e7c27a73 | 14930 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14931 | { |
e7c27a73 | 14932 | struct objfile *objfile = cu->objfile; |
0114d602 | 14933 | const char *name = NULL; |
3c8e0968 | 14934 | struct type *this_type, *target_type; |
c906108c | 14935 | |
94af9270 | 14936 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
14937 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
14938 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 14939 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
14940 | target_type = die_type (die, cu); |
14941 | if (target_type != this_type) | |
14942 | TYPE_TARGET_TYPE (this_type) = target_type; | |
14943 | else | |
14944 | { | |
14945 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
14946 | spec and cause infinite loops in GDB. */ | |
14947 | complaint (&symfile_complaints, | |
14948 | _("Self-referential DW_TAG_typedef " | |
14949 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14950 | die->offset.sect_off, objfile_name (objfile)); |
3c8e0968 DE |
14951 | TYPE_TARGET_TYPE (this_type) = NULL; |
14952 | } | |
f792889a | 14953 | return this_type; |
c906108c SS |
14954 | } |
14955 | ||
9b790ce7 UW |
14956 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
14957 | (which may be different from NAME) to the architecture back-end to allow | |
14958 | it to guess the correct format if necessary. */ | |
14959 | ||
14960 | static struct type * | |
14961 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
14962 | const char *name_hint) | |
14963 | { | |
14964 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
14965 | const struct floatformat **format; | |
14966 | struct type *type; | |
14967 | ||
14968 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
14969 | if (format) | |
14970 | type = init_float_type (objfile, bits, name, format); | |
14971 | else | |
14972 | type = init_type (objfile, TYPE_CODE_ERROR, bits / TARGET_CHAR_BIT, name); | |
14973 | ||
14974 | return type; | |
14975 | } | |
14976 | ||
c906108c SS |
14977 | /* Find a representation of a given base type and install |
14978 | it in the TYPE field of the die. */ | |
14979 | ||
f792889a | 14980 | static struct type * |
e7c27a73 | 14981 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14982 | { |
e7c27a73 | 14983 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14984 | struct type *type; |
14985 | struct attribute *attr; | |
19f392bc | 14986 | int encoding = 0, bits = 0; |
15d034d0 | 14987 | const char *name; |
c906108c | 14988 | |
e142c38c | 14989 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
14990 | if (attr) |
14991 | { | |
14992 | encoding = DW_UNSND (attr); | |
14993 | } | |
e142c38c | 14994 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14995 | if (attr) |
14996 | { | |
19f392bc | 14997 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 14998 | } |
39cbfefa | 14999 | name = dwarf2_name (die, cu); |
6ccb9162 | 15000 | if (!name) |
c906108c | 15001 | { |
6ccb9162 UW |
15002 | complaint (&symfile_complaints, |
15003 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 15004 | } |
6ccb9162 UW |
15005 | |
15006 | switch (encoding) | |
c906108c | 15007 | { |
6ccb9162 UW |
15008 | case DW_ATE_address: |
15009 | /* Turn DW_ATE_address into a void * pointer. */ | |
19f392bc UW |
15010 | type = init_type (objfile, TYPE_CODE_VOID, 1, NULL); |
15011 | type = init_pointer_type (objfile, bits, name, type); | |
6ccb9162 UW |
15012 | break; |
15013 | case DW_ATE_boolean: | |
19f392bc | 15014 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
15015 | break; |
15016 | case DW_ATE_complex_float: | |
9b790ce7 | 15017 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 15018 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
15019 | break; |
15020 | case DW_ATE_decimal_float: | |
19f392bc | 15021 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
15022 | break; |
15023 | case DW_ATE_float: | |
9b790ce7 | 15024 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
15025 | break; |
15026 | case DW_ATE_signed: | |
19f392bc | 15027 | type = init_integer_type (objfile, bits, 0, name); |
6ccb9162 UW |
15028 | break; |
15029 | case DW_ATE_unsigned: | |
3b2b8fea TT |
15030 | if (cu->language == language_fortran |
15031 | && name | |
61012eef | 15032 | && startswith (name, "character(")) |
19f392bc UW |
15033 | type = init_character_type (objfile, bits, 1, name); |
15034 | else | |
15035 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 UW |
15036 | break; |
15037 | case DW_ATE_signed_char: | |
6e70227d | 15038 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
15039 | || cu->language == language_pascal |
15040 | || cu->language == language_fortran) | |
19f392bc UW |
15041 | type = init_character_type (objfile, bits, 0, name); |
15042 | else | |
15043 | type = init_integer_type (objfile, bits, 0, name); | |
6ccb9162 UW |
15044 | break; |
15045 | case DW_ATE_unsigned_char: | |
868a0084 | 15046 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 15047 | || cu->language == language_pascal |
c44af4eb TT |
15048 | || cu->language == language_fortran |
15049 | || cu->language == language_rust) | |
19f392bc UW |
15050 | type = init_character_type (objfile, bits, 1, name); |
15051 | else | |
15052 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 | 15053 | break; |
75079b2b TT |
15054 | case DW_ATE_UTF: |
15055 | /* We just treat this as an integer and then recognize the | |
15056 | type by name elsewhere. */ | |
19f392bc | 15057 | type = init_integer_type (objfile, bits, 0, name); |
75079b2b TT |
15058 | break; |
15059 | ||
6ccb9162 UW |
15060 | default: |
15061 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
15062 | dwarf_type_encoding_name (encoding)); | |
19f392bc UW |
15063 | type = init_type (objfile, TYPE_CODE_ERROR, |
15064 | bits / TARGET_CHAR_BIT, name); | |
6ccb9162 | 15065 | break; |
c906108c | 15066 | } |
6ccb9162 | 15067 | |
0114d602 | 15068 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 15069 | TYPE_NOSIGN (type) = 1; |
0114d602 | 15070 | |
f792889a | 15071 | return set_die_type (die, type, cu); |
c906108c SS |
15072 | } |
15073 | ||
80180f79 SA |
15074 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
15075 | resulting value of the attribute into struct bound_prop. | |
15076 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
15077 | ||
15078 | static int | |
15079 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
15080 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
15081 | { | |
15082 | struct dwarf2_property_baton *baton; | |
15083 | struct obstack *obstack = &cu->objfile->objfile_obstack; | |
15084 | ||
15085 | if (attr == NULL || prop == NULL) | |
15086 | return 0; | |
15087 | ||
15088 | if (attr_form_is_block (attr)) | |
15089 | { | |
8d749320 | 15090 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
15091 | baton->referenced_type = NULL; |
15092 | baton->locexpr.per_cu = cu->per_cu; | |
15093 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
15094 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
15095 | prop->data.baton = baton; | |
15096 | prop->kind = PROP_LOCEXPR; | |
15097 | gdb_assert (prop->data.baton != NULL); | |
15098 | } | |
15099 | else if (attr_form_is_ref (attr)) | |
15100 | { | |
15101 | struct dwarf2_cu *target_cu = cu; | |
15102 | struct die_info *target_die; | |
15103 | struct attribute *target_attr; | |
15104 | ||
15105 | target_die = follow_die_ref (die, attr, &target_cu); | |
15106 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
15107 | if (target_attr == NULL) |
15108 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
15109 | target_cu); | |
80180f79 SA |
15110 | if (target_attr == NULL) |
15111 | return 0; | |
15112 | ||
df25ebbd | 15113 | switch (target_attr->name) |
80180f79 | 15114 | { |
df25ebbd JB |
15115 | case DW_AT_location: |
15116 | if (attr_form_is_section_offset (target_attr)) | |
15117 | { | |
8d749320 | 15118 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
15119 | baton->referenced_type = die_type (target_die, target_cu); |
15120 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
15121 | prop->data.baton = baton; | |
15122 | prop->kind = PROP_LOCLIST; | |
15123 | gdb_assert (prop->data.baton != NULL); | |
15124 | } | |
15125 | else if (attr_form_is_block (target_attr)) | |
15126 | { | |
8d749320 | 15127 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
15128 | baton->referenced_type = die_type (target_die, target_cu); |
15129 | baton->locexpr.per_cu = cu->per_cu; | |
15130 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
15131 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
15132 | prop->data.baton = baton; | |
15133 | prop->kind = PROP_LOCEXPR; | |
15134 | gdb_assert (prop->data.baton != NULL); | |
15135 | } | |
15136 | else | |
15137 | { | |
15138 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
15139 | "dynamic property"); | |
15140 | return 0; | |
15141 | } | |
15142 | break; | |
15143 | case DW_AT_data_member_location: | |
15144 | { | |
15145 | LONGEST offset; | |
15146 | ||
15147 | if (!handle_data_member_location (target_die, target_cu, | |
15148 | &offset)) | |
15149 | return 0; | |
15150 | ||
8d749320 | 15151 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
15152 | baton->referenced_type = read_type_die (target_die->parent, |
15153 | target_cu); | |
df25ebbd JB |
15154 | baton->offset_info.offset = offset; |
15155 | baton->offset_info.type = die_type (target_die, target_cu); | |
15156 | prop->data.baton = baton; | |
15157 | prop->kind = PROP_ADDR_OFFSET; | |
15158 | break; | |
15159 | } | |
80180f79 SA |
15160 | } |
15161 | } | |
15162 | else if (attr_form_is_constant (attr)) | |
15163 | { | |
15164 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
15165 | prop->kind = PROP_CONST; | |
15166 | } | |
15167 | else | |
15168 | { | |
15169 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
15170 | dwarf2_name (die, cu)); | |
15171 | return 0; | |
15172 | } | |
15173 | ||
15174 | return 1; | |
15175 | } | |
15176 | ||
a02abb62 JB |
15177 | /* Read the given DW_AT_subrange DIE. */ |
15178 | ||
f792889a | 15179 | static struct type * |
a02abb62 JB |
15180 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
15181 | { | |
4c9ad8c2 | 15182 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
15183 | struct type *range_type; |
15184 | struct attribute *attr; | |
729efb13 | 15185 | struct dynamic_prop low, high; |
4fae6e18 | 15186 | int low_default_is_valid; |
c451ebe5 | 15187 | int high_bound_is_count = 0; |
15d034d0 | 15188 | const char *name; |
43bbcdc2 | 15189 | LONGEST negative_mask; |
e77813c8 | 15190 | |
4c9ad8c2 TT |
15191 | orig_base_type = die_type (die, cu); |
15192 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
15193 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
15194 | creating the range type, but we use the result of check_typedef | |
15195 | when examining properties of the type. */ | |
15196 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 15197 | |
7e314c57 JK |
15198 | /* The die_type call above may have already set the type for this DIE. */ |
15199 | range_type = get_die_type (die, cu); | |
15200 | if (range_type) | |
15201 | return range_type; | |
15202 | ||
729efb13 SA |
15203 | low.kind = PROP_CONST; |
15204 | high.kind = PROP_CONST; | |
15205 | high.data.const_val = 0; | |
15206 | ||
4fae6e18 JK |
15207 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
15208 | omitting DW_AT_lower_bound. */ | |
15209 | switch (cu->language) | |
6e70227d | 15210 | { |
4fae6e18 JK |
15211 | case language_c: |
15212 | case language_cplus: | |
729efb13 | 15213 | low.data.const_val = 0; |
4fae6e18 JK |
15214 | low_default_is_valid = 1; |
15215 | break; | |
15216 | case language_fortran: | |
729efb13 | 15217 | low.data.const_val = 1; |
4fae6e18 JK |
15218 | low_default_is_valid = 1; |
15219 | break; | |
15220 | case language_d: | |
4fae6e18 | 15221 | case language_objc: |
c44af4eb | 15222 | case language_rust: |
729efb13 | 15223 | low.data.const_val = 0; |
4fae6e18 JK |
15224 | low_default_is_valid = (cu->header.version >= 4); |
15225 | break; | |
15226 | case language_ada: | |
15227 | case language_m2: | |
15228 | case language_pascal: | |
729efb13 | 15229 | low.data.const_val = 1; |
4fae6e18 JK |
15230 | low_default_is_valid = (cu->header.version >= 4); |
15231 | break; | |
15232 | default: | |
729efb13 | 15233 | low.data.const_val = 0; |
4fae6e18 JK |
15234 | low_default_is_valid = 0; |
15235 | break; | |
a02abb62 JB |
15236 | } |
15237 | ||
e142c38c | 15238 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 15239 | if (attr) |
11c1ba78 | 15240 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
15241 | else if (!low_default_is_valid) |
15242 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
15243 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 15244 | die->offset.sect_off, objfile_name (cu->objfile)); |
a02abb62 | 15245 | |
e142c38c | 15246 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 15247 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
15248 | { |
15249 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 15250 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 15251 | { |
c451ebe5 SA |
15252 | /* If bounds are constant do the final calculation here. */ |
15253 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
15254 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
15255 | else | |
15256 | high_bound_is_count = 1; | |
c2ff108b | 15257 | } |
e77813c8 PM |
15258 | } |
15259 | ||
15260 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
15261 | without specifying a base type. | |
15262 | In that case, the base type must be set to the type of | |
15263 | the lower bound, upper bound or count, in that order, if any of these | |
15264 | three attributes references an object that has a type. | |
15265 | If no base type is found, the Dwarf-2 specifications say that | |
15266 | a signed integer type of size equal to the size of an address should | |
15267 | be used. | |
15268 | For the following C code: `extern char gdb_int [];' | |
15269 | GCC produces an empty range DIE. | |
15270 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 15271 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
15272 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
15273 | { | |
15274 | struct objfile *objfile = cu->objfile; | |
15275 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
15276 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
15277 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
15278 | ||
15279 | /* Test "int", "long int", and "long long int" objfile types, | |
15280 | and select the first one having a size above or equal to the | |
15281 | architecture address size. */ | |
15282 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15283 | base_type = int_type; | |
15284 | else | |
15285 | { | |
15286 | int_type = objfile_type (objfile)->builtin_long; | |
15287 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15288 | base_type = int_type; | |
15289 | else | |
15290 | { | |
15291 | int_type = objfile_type (objfile)->builtin_long_long; | |
15292 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15293 | base_type = int_type; | |
15294 | } | |
15295 | } | |
15296 | } | |
a02abb62 | 15297 | |
dbb9c2b1 JB |
15298 | /* Normally, the DWARF producers are expected to use a signed |
15299 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
15300 | But this is unfortunately not always the case, as witnessed | |
15301 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
15302 | is used instead. To work around that ambiguity, we treat | |
15303 | the bounds as signed, and thus sign-extend their values, when | |
15304 | the base type is signed. */ | |
6e70227d | 15305 | negative_mask = |
66c6502d | 15306 | -((LONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
15307 | if (low.kind == PROP_CONST |
15308 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
15309 | low.data.const_val |= negative_mask; | |
15310 | if (high.kind == PROP_CONST | |
15311 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
15312 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 15313 | |
729efb13 | 15314 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 15315 | |
c451ebe5 SA |
15316 | if (high_bound_is_count) |
15317 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
15318 | ||
c2ff108b JK |
15319 | /* Ada expects an empty array on no boundary attributes. */ |
15320 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 15321 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 15322 | |
39cbfefa DJ |
15323 | name = dwarf2_name (die, cu); |
15324 | if (name) | |
15325 | TYPE_NAME (range_type) = name; | |
6e70227d | 15326 | |
e142c38c | 15327 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
15328 | if (attr) |
15329 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
15330 | ||
7e314c57 JK |
15331 | set_die_type (die, range_type, cu); |
15332 | ||
15333 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
15334 | set_descriptive_type (range_type, die, cu); |
15335 | ||
7e314c57 | 15336 | return range_type; |
a02abb62 | 15337 | } |
6e70227d | 15338 | |
f792889a | 15339 | static struct type * |
81a17f79 JB |
15340 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
15341 | { | |
15342 | struct type *type; | |
81a17f79 | 15343 | |
81a17f79 JB |
15344 | /* For now, we only support the C meaning of an unspecified type: void. */ |
15345 | ||
19f392bc | 15346 | type = init_type (cu->objfile, TYPE_CODE_VOID, 0, NULL); |
0114d602 | 15347 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 15348 | |
f792889a | 15349 | return set_die_type (die, type, cu); |
81a17f79 | 15350 | } |
a02abb62 | 15351 | |
639d11d3 DC |
15352 | /* Read a single die and all its descendents. Set the die's sibling |
15353 | field to NULL; set other fields in the die correctly, and set all | |
15354 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
15355 | location of the info_ptr after reading all of those dies. PARENT | |
15356 | is the parent of the die in question. */ | |
15357 | ||
15358 | static struct die_info * | |
dee91e82 | 15359 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
15360 | const gdb_byte *info_ptr, |
15361 | const gdb_byte **new_info_ptr, | |
dee91e82 | 15362 | struct die_info *parent) |
639d11d3 DC |
15363 | { |
15364 | struct die_info *die; | |
d521ce57 | 15365 | const gdb_byte *cur_ptr; |
639d11d3 DC |
15366 | int has_children; |
15367 | ||
bf6af496 | 15368 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
15369 | if (die == NULL) |
15370 | { | |
15371 | *new_info_ptr = cur_ptr; | |
15372 | return NULL; | |
15373 | } | |
93311388 | 15374 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
15375 | |
15376 | if (has_children) | |
bf6af496 | 15377 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
15378 | else |
15379 | { | |
15380 | die->child = NULL; | |
15381 | *new_info_ptr = cur_ptr; | |
15382 | } | |
15383 | ||
15384 | die->sibling = NULL; | |
15385 | die->parent = parent; | |
15386 | return die; | |
15387 | } | |
15388 | ||
15389 | /* Read a die, all of its descendents, and all of its siblings; set | |
15390 | all of the fields of all of the dies correctly. Arguments are as | |
15391 | in read_die_and_children. */ | |
15392 | ||
15393 | static struct die_info * | |
bf6af496 | 15394 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
15395 | const gdb_byte *info_ptr, |
15396 | const gdb_byte **new_info_ptr, | |
bf6af496 | 15397 | struct die_info *parent) |
639d11d3 DC |
15398 | { |
15399 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 15400 | const gdb_byte *cur_ptr; |
639d11d3 | 15401 | |
c906108c | 15402 | cur_ptr = info_ptr; |
639d11d3 DC |
15403 | first_die = last_sibling = NULL; |
15404 | ||
15405 | while (1) | |
c906108c | 15406 | { |
639d11d3 | 15407 | struct die_info *die |
dee91e82 | 15408 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 15409 | |
1d325ec1 | 15410 | if (die == NULL) |
c906108c | 15411 | { |
639d11d3 DC |
15412 | *new_info_ptr = cur_ptr; |
15413 | return first_die; | |
c906108c | 15414 | } |
1d325ec1 DJ |
15415 | |
15416 | if (!first_die) | |
15417 | first_die = die; | |
c906108c | 15418 | else |
1d325ec1 DJ |
15419 | last_sibling->sibling = die; |
15420 | ||
15421 | last_sibling = die; | |
c906108c | 15422 | } |
c906108c SS |
15423 | } |
15424 | ||
bf6af496 DE |
15425 | /* Read a die, all of its descendents, and all of its siblings; set |
15426 | all of the fields of all of the dies correctly. Arguments are as | |
15427 | in read_die_and_children. | |
15428 | This the main entry point for reading a DIE and all its children. */ | |
15429 | ||
15430 | static struct die_info * | |
15431 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
15432 | const gdb_byte *info_ptr, |
15433 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
15434 | struct die_info *parent) |
15435 | { | |
15436 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
15437 | new_info_ptr, parent); | |
15438 | ||
b4f54984 | 15439 | if (dwarf_die_debug) |
bf6af496 DE |
15440 | { |
15441 | fprintf_unfiltered (gdb_stdlog, | |
15442 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15443 | get_section_name (reader->die_section), |
bf6af496 DE |
15444 | (unsigned) (info_ptr - reader->die_section->buffer), |
15445 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 15446 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
15447 | } |
15448 | ||
15449 | return die; | |
15450 | } | |
15451 | ||
3019eac3 DE |
15452 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
15453 | attributes. | |
15454 | The caller is responsible for filling in the extra attributes | |
15455 | and updating (*DIEP)->num_attrs. | |
15456 | Set DIEP to point to a newly allocated die with its information, | |
15457 | except for its child, sibling, and parent fields. | |
15458 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 15459 | |
d521ce57 | 15460 | static const gdb_byte * |
3019eac3 | 15461 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 15462 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 15463 | int *has_children, int num_extra_attrs) |
93311388 | 15464 | { |
b64f50a1 JK |
15465 | unsigned int abbrev_number, bytes_read, i; |
15466 | sect_offset offset; | |
93311388 DE |
15467 | struct abbrev_info *abbrev; |
15468 | struct die_info *die; | |
15469 | struct dwarf2_cu *cu = reader->cu; | |
15470 | bfd *abfd = reader->abfd; | |
15471 | ||
b64f50a1 | 15472 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
15473 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15474 | info_ptr += bytes_read; | |
15475 | if (!abbrev_number) | |
15476 | { | |
15477 | *diep = NULL; | |
15478 | *has_children = 0; | |
15479 | return info_ptr; | |
15480 | } | |
15481 | ||
433df2d4 | 15482 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 15483 | if (!abbrev) |
348e048f DE |
15484 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
15485 | abbrev_number, | |
15486 | bfd_get_filename (abfd)); | |
15487 | ||
3019eac3 | 15488 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
15489 | die->offset = offset; |
15490 | die->tag = abbrev->tag; | |
15491 | die->abbrev = abbrev_number; | |
15492 | ||
3019eac3 DE |
15493 | /* Make the result usable. |
15494 | The caller needs to update num_attrs after adding the extra | |
15495 | attributes. */ | |
93311388 DE |
15496 | die->num_attrs = abbrev->num_attrs; |
15497 | ||
15498 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
15499 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
15500 | info_ptr); | |
93311388 DE |
15501 | |
15502 | *diep = die; | |
15503 | *has_children = abbrev->has_children; | |
15504 | return info_ptr; | |
15505 | } | |
15506 | ||
3019eac3 DE |
15507 | /* Read a die and all its attributes. |
15508 | Set DIEP to point to a newly allocated die with its information, | |
15509 | except for its child, sibling, and parent fields. | |
15510 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
15511 | ||
d521ce57 | 15512 | static const gdb_byte * |
3019eac3 | 15513 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 15514 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
15515 | int *has_children) |
15516 | { | |
d521ce57 | 15517 | const gdb_byte *result; |
bf6af496 DE |
15518 | |
15519 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
15520 | ||
b4f54984 | 15521 | if (dwarf_die_debug) |
bf6af496 DE |
15522 | { |
15523 | fprintf_unfiltered (gdb_stdlog, | |
15524 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15525 | get_section_name (reader->die_section), |
bf6af496 DE |
15526 | (unsigned) (info_ptr - reader->die_section->buffer), |
15527 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 15528 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
15529 | } |
15530 | ||
15531 | return result; | |
3019eac3 | 15532 | } |
433df2d4 DE |
15533 | \f |
15534 | /* Abbreviation tables. | |
3019eac3 | 15535 | |
433df2d4 | 15536 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
15537 | stored in a separate .debug_abbrev section. Before we read any |
15538 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
15539 | in a hash table. */ |
15540 | ||
15541 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
15542 | ||
15543 | static struct abbrev_info * | |
15544 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
15545 | { | |
15546 | struct abbrev_info *abbrev; | |
15547 | ||
8d749320 | 15548 | abbrev = XOBNEW (&abbrev_table->abbrev_obstack, struct abbrev_info); |
433df2d4 | 15549 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 15550 | |
433df2d4 DE |
15551 | return abbrev; |
15552 | } | |
15553 | ||
15554 | /* Add an abbreviation to the table. */ | |
c906108c SS |
15555 | |
15556 | static void | |
433df2d4 DE |
15557 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
15558 | unsigned int abbrev_number, | |
15559 | struct abbrev_info *abbrev) | |
15560 | { | |
15561 | unsigned int hash_number; | |
15562 | ||
15563 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15564 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
15565 | abbrev_table->abbrevs[hash_number] = abbrev; | |
15566 | } | |
dee91e82 | 15567 | |
433df2d4 DE |
15568 | /* Look up an abbrev in the table. |
15569 | Returns NULL if the abbrev is not found. */ | |
15570 | ||
15571 | static struct abbrev_info * | |
15572 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
15573 | unsigned int abbrev_number) | |
c906108c | 15574 | { |
433df2d4 DE |
15575 | unsigned int hash_number; |
15576 | struct abbrev_info *abbrev; | |
15577 | ||
15578 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15579 | abbrev = abbrev_table->abbrevs[hash_number]; | |
15580 | ||
15581 | while (abbrev) | |
15582 | { | |
15583 | if (abbrev->number == abbrev_number) | |
15584 | return abbrev; | |
15585 | abbrev = abbrev->next; | |
15586 | } | |
15587 | return NULL; | |
15588 | } | |
15589 | ||
15590 | /* Read in an abbrev table. */ | |
15591 | ||
15592 | static struct abbrev_table * | |
15593 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
15594 | sect_offset offset) | |
15595 | { | |
15596 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 15597 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 15598 | struct abbrev_table *abbrev_table; |
d521ce57 | 15599 | const gdb_byte *abbrev_ptr; |
c906108c SS |
15600 | struct abbrev_info *cur_abbrev; |
15601 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 15602 | unsigned int abbrev_form; |
f3dd6933 DJ |
15603 | struct attr_abbrev *cur_attrs; |
15604 | unsigned int allocated_attrs; | |
c906108c | 15605 | |
70ba0933 | 15606 | abbrev_table = XNEW (struct abbrev_table); |
f4dc4d17 | 15607 | abbrev_table->offset = offset; |
433df2d4 | 15608 | obstack_init (&abbrev_table->abbrev_obstack); |
8d749320 SM |
15609 | abbrev_table->abbrevs = |
15610 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct abbrev_info *, | |
15611 | ABBREV_HASH_SIZE); | |
433df2d4 DE |
15612 | memset (abbrev_table->abbrevs, 0, |
15613 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 15614 | |
433df2d4 DE |
15615 | dwarf2_read_section (objfile, section); |
15616 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
15617 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15618 | abbrev_ptr += bytes_read; | |
15619 | ||
f3dd6933 | 15620 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 15621 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 15622 | |
0963b4bd | 15623 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
15624 | while (abbrev_number) |
15625 | { | |
433df2d4 | 15626 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
15627 | |
15628 | /* read in abbrev header */ | |
15629 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
15630 | cur_abbrev->tag |
15631 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
15632 | abbrev_ptr += bytes_read; |
15633 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
15634 | abbrev_ptr += 1; | |
15635 | ||
15636 | /* now read in declarations */ | |
22d2f3ab | 15637 | for (;;) |
c906108c | 15638 | { |
43988095 JK |
15639 | LONGEST implicit_const; |
15640 | ||
22d2f3ab JK |
15641 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15642 | abbrev_ptr += bytes_read; | |
15643 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15644 | abbrev_ptr += bytes_read; | |
43988095 JK |
15645 | if (abbrev_form == DW_FORM_implicit_const) |
15646 | { | |
15647 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
15648 | &bytes_read); | |
15649 | abbrev_ptr += bytes_read; | |
15650 | } | |
15651 | else | |
15652 | { | |
15653 | /* Initialize it due to a false compiler warning. */ | |
15654 | implicit_const = -1; | |
15655 | } | |
22d2f3ab JK |
15656 | |
15657 | if (abbrev_name == 0) | |
15658 | break; | |
15659 | ||
f3dd6933 | 15660 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 15661 | { |
f3dd6933 DJ |
15662 | allocated_attrs += ATTR_ALLOC_CHUNK; |
15663 | cur_attrs | |
224c3ddb | 15664 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 15665 | } |
ae038cb0 | 15666 | |
aead7601 SM |
15667 | cur_attrs[cur_abbrev->num_attrs].name |
15668 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 15669 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 15670 | = (enum dwarf_form) abbrev_form; |
43988095 | 15671 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 15672 | ++cur_abbrev->num_attrs; |
c906108c SS |
15673 | } |
15674 | ||
8d749320 SM |
15675 | cur_abbrev->attrs = |
15676 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
15677 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
15678 | memcpy (cur_abbrev->attrs, cur_attrs, |
15679 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
15680 | ||
433df2d4 | 15681 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
15682 | |
15683 | /* Get next abbreviation. | |
15684 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
15685 | always properly terminated with an abbrev number of 0. |
15686 | Exit loop if we encounter an abbreviation which we have | |
15687 | already read (which means we are about to read the abbreviations | |
15688 | for the next compile unit) or if the end of the abbreviation | |
15689 | table is reached. */ | |
433df2d4 | 15690 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
15691 | break; |
15692 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15693 | abbrev_ptr += bytes_read; | |
433df2d4 | 15694 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
15695 | break; |
15696 | } | |
f3dd6933 DJ |
15697 | |
15698 | xfree (cur_attrs); | |
433df2d4 | 15699 | return abbrev_table; |
c906108c SS |
15700 | } |
15701 | ||
433df2d4 | 15702 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 15703 | |
c906108c | 15704 | static void |
433df2d4 | 15705 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 15706 | { |
433df2d4 DE |
15707 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
15708 | xfree (abbrev_table); | |
c906108c SS |
15709 | } |
15710 | ||
f4dc4d17 DE |
15711 | /* Same as abbrev_table_free but as a cleanup. |
15712 | We pass in a pointer to the pointer to the table so that we can | |
15713 | set the pointer to NULL when we're done. It also simplifies | |
73051182 | 15714 | build_type_psymtabs_1. */ |
f4dc4d17 DE |
15715 | |
15716 | static void | |
15717 | abbrev_table_free_cleanup (void *table_ptr) | |
15718 | { | |
9a3c8263 | 15719 | struct abbrev_table **abbrev_table_ptr = (struct abbrev_table **) table_ptr; |
f4dc4d17 DE |
15720 | |
15721 | if (*abbrev_table_ptr != NULL) | |
15722 | abbrev_table_free (*abbrev_table_ptr); | |
15723 | *abbrev_table_ptr = NULL; | |
15724 | } | |
15725 | ||
433df2d4 DE |
15726 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
15727 | ||
15728 | static void | |
15729 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
15730 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 15731 | { |
433df2d4 DE |
15732 | cu->abbrev_table = |
15733 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
15734 | } | |
c906108c | 15735 | |
433df2d4 | 15736 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 15737 | |
433df2d4 DE |
15738 | static void |
15739 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
15740 | { | |
9a3c8263 | 15741 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr_to_cu; |
c906108c | 15742 | |
a2ce51a0 DE |
15743 | if (cu->abbrev_table != NULL) |
15744 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
15745 | /* Set this to NULL so that we SEGV if we try to read it later, |
15746 | and also because free_comp_unit verifies this is NULL. */ | |
15747 | cu->abbrev_table = NULL; | |
15748 | } | |
15749 | \f | |
72bf9492 DJ |
15750 | /* Returns nonzero if TAG represents a type that we might generate a partial |
15751 | symbol for. */ | |
15752 | ||
15753 | static int | |
15754 | is_type_tag_for_partial (int tag) | |
15755 | { | |
15756 | switch (tag) | |
15757 | { | |
15758 | #if 0 | |
15759 | /* Some types that would be reasonable to generate partial symbols for, | |
15760 | that we don't at present. */ | |
15761 | case DW_TAG_array_type: | |
15762 | case DW_TAG_file_type: | |
15763 | case DW_TAG_ptr_to_member_type: | |
15764 | case DW_TAG_set_type: | |
15765 | case DW_TAG_string_type: | |
15766 | case DW_TAG_subroutine_type: | |
15767 | #endif | |
15768 | case DW_TAG_base_type: | |
15769 | case DW_TAG_class_type: | |
680b30c7 | 15770 | case DW_TAG_interface_type: |
72bf9492 DJ |
15771 | case DW_TAG_enumeration_type: |
15772 | case DW_TAG_structure_type: | |
15773 | case DW_TAG_subrange_type: | |
15774 | case DW_TAG_typedef: | |
15775 | case DW_TAG_union_type: | |
15776 | return 1; | |
15777 | default: | |
15778 | return 0; | |
15779 | } | |
15780 | } | |
15781 | ||
15782 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
15783 | ||
15784 | static struct partial_die_info * | |
dee91e82 | 15785 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 15786 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 15787 | { |
dee91e82 | 15788 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15789 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
15790 | struct partial_die_info *part_die; |
15791 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
15792 | struct abbrev_info *abbrev; | |
15793 | unsigned int bytes_read; | |
5afb4e99 | 15794 | unsigned int load_all = 0; |
72bf9492 DJ |
15795 | int nesting_level = 1; |
15796 | ||
15797 | parent_die = NULL; | |
15798 | last_die = NULL; | |
15799 | ||
7adf1e79 DE |
15800 | gdb_assert (cu->per_cu != NULL); |
15801 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
15802 | load_all = 1; |
15803 | ||
72bf9492 DJ |
15804 | cu->partial_dies |
15805 | = htab_create_alloc_ex (cu->header.length / 12, | |
15806 | partial_die_hash, | |
15807 | partial_die_eq, | |
15808 | NULL, | |
15809 | &cu->comp_unit_obstack, | |
15810 | hashtab_obstack_allocate, | |
15811 | dummy_obstack_deallocate); | |
15812 | ||
8d749320 | 15813 | part_die = XOBNEW (&cu->comp_unit_obstack, struct partial_die_info); |
72bf9492 DJ |
15814 | |
15815 | while (1) | |
15816 | { | |
15817 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
15818 | ||
15819 | /* A NULL abbrev means the end of a series of children. */ | |
15820 | if (abbrev == NULL) | |
15821 | { | |
15822 | if (--nesting_level == 0) | |
15823 | { | |
15824 | /* PART_DIE was probably the last thing allocated on the | |
15825 | comp_unit_obstack, so we could call obstack_free | |
15826 | here. We don't do that because the waste is small, | |
15827 | and will be cleaned up when we're done with this | |
15828 | compilation unit. This way, we're also more robust | |
15829 | against other users of the comp_unit_obstack. */ | |
15830 | return first_die; | |
15831 | } | |
15832 | info_ptr += bytes_read; | |
15833 | last_die = parent_die; | |
15834 | parent_die = parent_die->die_parent; | |
15835 | continue; | |
15836 | } | |
15837 | ||
98bfdba5 PA |
15838 | /* Check for template arguments. We never save these; if |
15839 | they're seen, we just mark the parent, and go on our way. */ | |
15840 | if (parent_die != NULL | |
15841 | && cu->language == language_cplus | |
15842 | && (abbrev->tag == DW_TAG_template_type_param | |
15843 | || abbrev->tag == DW_TAG_template_value_param)) | |
15844 | { | |
15845 | parent_die->has_template_arguments = 1; | |
15846 | ||
15847 | if (!load_all) | |
15848 | { | |
15849 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 15850 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15851 | continue; |
15852 | } | |
15853 | } | |
15854 | ||
0d99eb77 | 15855 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
15856 | Skip their other children. */ |
15857 | if (!load_all | |
15858 | && cu->language == language_cplus | |
15859 | && parent_die != NULL | |
15860 | && parent_die->tag == DW_TAG_subprogram) | |
15861 | { | |
dee91e82 | 15862 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15863 | continue; |
15864 | } | |
15865 | ||
5afb4e99 DJ |
15866 | /* Check whether this DIE is interesting enough to save. Normally |
15867 | we would not be interested in members here, but there may be | |
15868 | later variables referencing them via DW_AT_specification (for | |
15869 | static members). */ | |
15870 | if (!load_all | |
15871 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 15872 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
15873 | && abbrev->tag != DW_TAG_enumerator |
15874 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 15875 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 15876 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 15877 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 15878 | && abbrev->tag != DW_TAG_module |
95554aad | 15879 | && abbrev->tag != DW_TAG_member |
74921315 KS |
15880 | && abbrev->tag != DW_TAG_imported_unit |
15881 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
15882 | { |
15883 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15884 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
15885 | continue; |
15886 | } | |
15887 | ||
dee91e82 DE |
15888 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
15889 | info_ptr); | |
72bf9492 DJ |
15890 | |
15891 | /* This two-pass algorithm for processing partial symbols has a | |
15892 | high cost in cache pressure. Thus, handle some simple cases | |
15893 | here which cover the majority of C partial symbols. DIEs | |
15894 | which neither have specification tags in them, nor could have | |
15895 | specification tags elsewhere pointing at them, can simply be | |
15896 | processed and discarded. | |
15897 | ||
15898 | This segment is also optional; scan_partial_symbols and | |
15899 | add_partial_symbol will handle these DIEs if we chain | |
15900 | them in normally. When compilers which do not emit large | |
15901 | quantities of duplicate debug information are more common, | |
15902 | this code can probably be removed. */ | |
15903 | ||
15904 | /* Any complete simple types at the top level (pretty much all | |
15905 | of them, for a language without namespaces), can be processed | |
15906 | directly. */ | |
15907 | if (parent_die == NULL | |
15908 | && part_die->has_specification == 0 | |
15909 | && part_die->is_declaration == 0 | |
d8228535 | 15910 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
15911 | || part_die->tag == DW_TAG_base_type |
15912 | || part_die->tag == DW_TAG_subrange_type)) | |
15913 | { | |
15914 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 15915 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15916 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 | 15917 | &objfile->static_psymbols, |
1762568f | 15918 | 0, cu->language, objfile); |
dee91e82 | 15919 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15920 | continue; |
15921 | } | |
15922 | ||
d8228535 JK |
15923 | /* The exception for DW_TAG_typedef with has_children above is |
15924 | a workaround of GCC PR debug/47510. In the case of this complaint | |
15925 | type_name_no_tag_or_error will error on such types later. | |
15926 | ||
15927 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
15928 | it could not find the child DIEs referenced later, this is checked | |
15929 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
15930 | ||
15931 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
15932 | complaint (&symfile_complaints, | |
15933 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
15934 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 15935 | part_die->offset.sect_off, objfile_name (objfile)); |
d8228535 | 15936 | |
72bf9492 DJ |
15937 | /* If we're at the second level, and we're an enumerator, and |
15938 | our parent has no specification (meaning possibly lives in a | |
15939 | namespace elsewhere), then we can add the partial symbol now | |
15940 | instead of queueing it. */ | |
15941 | if (part_die->tag == DW_TAG_enumerator | |
15942 | && parent_die != NULL | |
15943 | && parent_die->die_parent == NULL | |
15944 | && parent_die->tag == DW_TAG_enumeration_type | |
15945 | && parent_die->has_specification == 0) | |
15946 | { | |
15947 | if (part_die->name == NULL) | |
3e43a32a MS |
15948 | complaint (&symfile_complaints, |
15949 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 15950 | else if (building_psymtab) |
04a679b8 | 15951 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15952 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 15953 | cu->language == language_cplus |
bb5ed363 DE |
15954 | ? &objfile->global_psymbols |
15955 | : &objfile->static_psymbols, | |
1762568f | 15956 | 0, cu->language, objfile); |
72bf9492 | 15957 | |
dee91e82 | 15958 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15959 | continue; |
15960 | } | |
15961 | ||
15962 | /* We'll save this DIE so link it in. */ | |
15963 | part_die->die_parent = parent_die; | |
15964 | part_die->die_sibling = NULL; | |
15965 | part_die->die_child = NULL; | |
15966 | ||
15967 | if (last_die && last_die == parent_die) | |
15968 | last_die->die_child = part_die; | |
15969 | else if (last_die) | |
15970 | last_die->die_sibling = part_die; | |
15971 | ||
15972 | last_die = part_die; | |
15973 | ||
15974 | if (first_die == NULL) | |
15975 | first_die = part_die; | |
15976 | ||
15977 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
15978 | find interesting need to be in the hash table, because we | |
15979 | also have the parent/sibling/child chains; only those that we | |
15980 | might refer to by offset later during partial symbol reading. | |
15981 | ||
15982 | For now this means things that might have be the target of a | |
15983 | DW_AT_specification, DW_AT_abstract_origin, or | |
15984 | DW_AT_extension. DW_AT_extension will refer only to | |
15985 | namespaces; DW_AT_abstract_origin refers to functions (and | |
15986 | many things under the function DIE, but we do not recurse | |
15987 | into function DIEs during partial symbol reading) and | |
15988 | possibly variables as well; DW_AT_specification refers to | |
15989 | declarations. Declarations ought to have the DW_AT_declaration | |
15990 | flag. It happens that GCC forgets to put it in sometimes, but | |
15991 | only for functions, not for types. | |
15992 | ||
15993 | Adding more things than necessary to the hash table is harmless | |
15994 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
15995 | wasted time in find_partial_die, when we reread the compilation |
15996 | unit with load_all_dies set. */ | |
72bf9492 | 15997 | |
5afb4e99 | 15998 | if (load_all |
72929c62 | 15999 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 16000 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
16001 | || abbrev->tag == DW_TAG_variable |
16002 | || abbrev->tag == DW_TAG_namespace | |
16003 | || part_die->is_declaration) | |
16004 | { | |
16005 | void **slot; | |
16006 | ||
16007 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 16008 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
16009 | *slot = part_die; |
16010 | } | |
16011 | ||
8d749320 | 16012 | part_die = XOBNEW (&cu->comp_unit_obstack, struct partial_die_info); |
72bf9492 DJ |
16013 | |
16014 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 16015 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
16016 | languages we have to, so that we can get at method physnames |
16017 | to infer fully qualified class names, for DW_AT_specification, | |
16018 | and for C++ template arguments. For C++, we also look one level | |
16019 | inside functions to find template arguments (if the name of the | |
16020 | function does not already contain the template arguments). | |
bc30ff58 JB |
16021 | |
16022 | For Ada, we need to scan the children of subprograms and lexical | |
16023 | blocks as well because Ada allows the definition of nested | |
16024 | entities that could be interesting for the debugger, such as | |
16025 | nested subprograms for instance. */ | |
72bf9492 | 16026 | if (last_die->has_children |
5afb4e99 DJ |
16027 | && (load_all |
16028 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 16029 | || last_die->tag == DW_TAG_module |
72bf9492 | 16030 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
16031 | || (cu->language == language_cplus |
16032 | && last_die->tag == DW_TAG_subprogram | |
16033 | && (last_die->name == NULL | |
16034 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
16035 | || (cu->language != language_c |
16036 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 16037 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 16038 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
16039 | || last_die->tag == DW_TAG_union_type)) |
16040 | || (cu->language == language_ada | |
16041 | && (last_die->tag == DW_TAG_subprogram | |
16042 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
16043 | { |
16044 | nesting_level++; | |
16045 | parent_die = last_die; | |
16046 | continue; | |
16047 | } | |
16048 | ||
16049 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 16050 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
16051 | |
16052 | /* Back to the top, do it again. */ | |
16053 | } | |
16054 | } | |
16055 | ||
c906108c SS |
16056 | /* Read a minimal amount of information into the minimal die structure. */ |
16057 | ||
d521ce57 | 16058 | static const gdb_byte * |
dee91e82 DE |
16059 | read_partial_die (const struct die_reader_specs *reader, |
16060 | struct partial_die_info *part_die, | |
16061 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 16062 | const gdb_byte *info_ptr) |
c906108c | 16063 | { |
dee91e82 | 16064 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 16065 | struct objfile *objfile = cu->objfile; |
d521ce57 | 16066 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 16067 | unsigned int i; |
c906108c | 16068 | struct attribute attr; |
c5aa993b | 16069 | int has_low_pc_attr = 0; |
c906108c | 16070 | int has_high_pc_attr = 0; |
91da1414 | 16071 | int high_pc_relative = 0; |
c906108c | 16072 | |
72bf9492 | 16073 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 16074 | |
b64f50a1 | 16075 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
16076 | |
16077 | info_ptr += abbrev_len; | |
16078 | ||
16079 | if (abbrev == NULL) | |
16080 | return info_ptr; | |
16081 | ||
c906108c SS |
16082 | part_die->tag = abbrev->tag; |
16083 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
16084 | |
16085 | for (i = 0; i < abbrev->num_attrs; ++i) | |
16086 | { | |
dee91e82 | 16087 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
16088 | |
16089 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 16090 | partial symbol table. */ |
c906108c SS |
16091 | switch (attr.name) |
16092 | { | |
16093 | case DW_AT_name: | |
71c25dea TT |
16094 | switch (part_die->tag) |
16095 | { | |
16096 | case DW_TAG_compile_unit: | |
95554aad | 16097 | case DW_TAG_partial_unit: |
348e048f | 16098 | case DW_TAG_type_unit: |
71c25dea TT |
16099 | /* Compilation units have a DW_AT_name that is a filename, not |
16100 | a source language identifier. */ | |
16101 | case DW_TAG_enumeration_type: | |
16102 | case DW_TAG_enumerator: | |
16103 | /* These tags always have simple identifiers already; no need | |
16104 | to canonicalize them. */ | |
16105 | part_die->name = DW_STRING (&attr); | |
16106 | break; | |
16107 | default: | |
16108 | part_die->name | |
16109 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
34a68019 | 16110 | &objfile->per_bfd->storage_obstack); |
71c25dea TT |
16111 | break; |
16112 | } | |
c906108c | 16113 | break; |
31ef98ae | 16114 | case DW_AT_linkage_name: |
c906108c | 16115 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
16116 | /* Note that both forms of linkage name might appear. We |
16117 | assume they will be the same, and we only store the last | |
16118 | one we see. */ | |
94af9270 KS |
16119 | if (cu->language == language_ada) |
16120 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 16121 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
16122 | break; |
16123 | case DW_AT_low_pc: | |
16124 | has_low_pc_attr = 1; | |
31aa7e4e | 16125 | part_die->lowpc = attr_value_as_address (&attr); |
c906108c SS |
16126 | break; |
16127 | case DW_AT_high_pc: | |
16128 | has_high_pc_attr = 1; | |
31aa7e4e JB |
16129 | part_die->highpc = attr_value_as_address (&attr); |
16130 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) | |
16131 | high_pc_relative = 1; | |
c906108c SS |
16132 | break; |
16133 | case DW_AT_location: | |
0963b4bd | 16134 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
16135 | if (attr_form_is_block (&attr)) |
16136 | { | |
95554aad | 16137 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 16138 | } |
3690dd37 | 16139 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 16140 | { |
4d3c2250 | 16141 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
16142 | } |
16143 | else | |
16144 | { | |
4d3c2250 KB |
16145 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
16146 | "partial symbol information"); | |
8e19ed76 | 16147 | } |
c906108c | 16148 | break; |
c906108c SS |
16149 | case DW_AT_external: |
16150 | part_die->is_external = DW_UNSND (&attr); | |
16151 | break; | |
16152 | case DW_AT_declaration: | |
16153 | part_die->is_declaration = DW_UNSND (&attr); | |
16154 | break; | |
16155 | case DW_AT_type: | |
16156 | part_die->has_type = 1; | |
16157 | break; | |
16158 | case DW_AT_abstract_origin: | |
16159 | case DW_AT_specification: | |
72bf9492 DJ |
16160 | case DW_AT_extension: |
16161 | part_die->has_specification = 1; | |
c764a876 | 16162 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
16163 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
16164 | || cu->per_cu->is_dwz); | |
c906108c SS |
16165 | break; |
16166 | case DW_AT_sibling: | |
16167 | /* Ignore absolute siblings, they might point outside of | |
16168 | the current compile unit. */ | |
16169 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
16170 | complaint (&symfile_complaints, |
16171 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 16172 | else |
b9502d3f WN |
16173 | { |
16174 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
16175 | const gdb_byte *sibling_ptr = buffer + off; | |
16176 | ||
16177 | if (sibling_ptr < info_ptr) | |
16178 | complaint (&symfile_complaints, | |
16179 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
16180 | else if (sibling_ptr > reader->buffer_end) |
16181 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
16182 | else |
16183 | part_die->sibling = sibling_ptr; | |
16184 | } | |
c906108c | 16185 | break; |
fa4028e9 JB |
16186 | case DW_AT_byte_size: |
16187 | part_die->has_byte_size = 1; | |
16188 | break; | |
ff908ebf AW |
16189 | case DW_AT_const_value: |
16190 | part_die->has_const_value = 1; | |
16191 | break; | |
68511cec CES |
16192 | case DW_AT_calling_convention: |
16193 | /* DWARF doesn't provide a way to identify a program's source-level | |
16194 | entry point. DW_AT_calling_convention attributes are only meant | |
16195 | to describe functions' calling conventions. | |
16196 | ||
16197 | However, because it's a necessary piece of information in | |
0c1b455e TT |
16198 | Fortran, and before DWARF 4 DW_CC_program was the only |
16199 | piece of debugging information whose definition refers to | |
16200 | a 'main program' at all, several compilers marked Fortran | |
16201 | main programs with DW_CC_program --- even when those | |
16202 | functions use the standard calling conventions. | |
16203 | ||
16204 | Although DWARF now specifies a way to provide this | |
16205 | information, we support this practice for backward | |
16206 | compatibility. */ | |
68511cec | 16207 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e TT |
16208 | && cu->language == language_fortran) |
16209 | part_die->main_subprogram = 1; | |
68511cec | 16210 | break; |
481860b3 GB |
16211 | case DW_AT_inline: |
16212 | if (DW_UNSND (&attr) == DW_INL_inlined | |
16213 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
16214 | part_die->may_be_inlined = 1; | |
16215 | break; | |
95554aad TT |
16216 | |
16217 | case DW_AT_import: | |
16218 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
16219 | { |
16220 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
16221 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
16222 | || cu->per_cu->is_dwz); | |
16223 | } | |
95554aad TT |
16224 | break; |
16225 | ||
0c1b455e TT |
16226 | case DW_AT_main_subprogram: |
16227 | part_die->main_subprogram = DW_UNSND (&attr); | |
16228 | break; | |
16229 | ||
c906108c SS |
16230 | default: |
16231 | break; | |
16232 | } | |
16233 | } | |
16234 | ||
91da1414 MW |
16235 | if (high_pc_relative) |
16236 | part_die->highpc += part_die->lowpc; | |
16237 | ||
9373cf26 JK |
16238 | if (has_low_pc_attr && has_high_pc_attr) |
16239 | { | |
16240 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
16241 | eliminate duplicate copies of functions and vtables and such. | |
16242 | The linker will arbitrarily choose one and discard the others. | |
16243 | The AT_*_pc values for such functions refer to local labels in | |
16244 | these sections. If the section from that file was discarded, the | |
16245 | labels are not in the output, so the relocs get a value of 0. | |
16246 | If this is a discarded function, mark the pc bounds as invalid, | |
16247 | so that GDB will ignore it. */ | |
16248 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
16249 | { | |
bb5ed363 | 16250 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
16251 | |
16252 | complaint (&symfile_complaints, | |
16253 | _("DW_AT_low_pc %s is zero " | |
16254 | "for DIE at 0x%x [in module %s]"), | |
16255 | paddress (gdbarch, part_die->lowpc), | |
4262abfb | 16256 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
16257 | } |
16258 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
16259 | else if (part_die->lowpc >= part_die->highpc) | |
16260 | { | |
bb5ed363 | 16261 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
16262 | |
16263 | complaint (&symfile_complaints, | |
16264 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
16265 | "for DIE at 0x%x [in module %s]"), | |
16266 | paddress (gdbarch, part_die->lowpc), | |
16267 | paddress (gdbarch, part_die->highpc), | |
4262abfb | 16268 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
16269 | } |
16270 | else | |
16271 | part_die->has_pc_info = 1; | |
16272 | } | |
85cbf3d3 | 16273 | |
c906108c SS |
16274 | return info_ptr; |
16275 | } | |
16276 | ||
72bf9492 DJ |
16277 | /* Find a cached partial DIE at OFFSET in CU. */ |
16278 | ||
16279 | static struct partial_die_info * | |
b64f50a1 | 16280 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
16281 | { |
16282 | struct partial_die_info *lookup_die = NULL; | |
16283 | struct partial_die_info part_die; | |
16284 | ||
16285 | part_die.offset = offset; | |
9a3c8263 SM |
16286 | lookup_die = ((struct partial_die_info *) |
16287 | htab_find_with_hash (cu->partial_dies, &part_die, | |
16288 | offset.sect_off)); | |
72bf9492 | 16289 | |
72bf9492 DJ |
16290 | return lookup_die; |
16291 | } | |
16292 | ||
348e048f DE |
16293 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
16294 | except in the case of .debug_types DIEs which do not reference | |
16295 | outside their CU (they do however referencing other types via | |
55f1336d | 16296 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
16297 | |
16298 | static struct partial_die_info * | |
36586728 | 16299 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 16300 | { |
bb5ed363 | 16301 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
16302 | struct dwarf2_per_cu_data *per_cu = NULL; |
16303 | struct partial_die_info *pd = NULL; | |
72bf9492 | 16304 | |
36586728 TT |
16305 | if (offset_in_dwz == cu->per_cu->is_dwz |
16306 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
16307 | { |
16308 | pd = find_partial_die_in_comp_unit (offset, cu); | |
16309 | if (pd != NULL) | |
16310 | return pd; | |
0d99eb77 DE |
16311 | /* We missed recording what we needed. |
16312 | Load all dies and try again. */ | |
16313 | per_cu = cu->per_cu; | |
5afb4e99 | 16314 | } |
0d99eb77 DE |
16315 | else |
16316 | { | |
16317 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 16318 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
16319 | { |
16320 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
16321 | " external reference to offset 0x%lx [in module %s].\n"), | |
16322 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
16323 | bfd_get_filename (objfile->obfd)); | |
16324 | } | |
36586728 TT |
16325 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
16326 | objfile); | |
72bf9492 | 16327 | |
0d99eb77 DE |
16328 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
16329 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 16330 | |
0d99eb77 DE |
16331 | per_cu->cu->last_used = 0; |
16332 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
16333 | } | |
5afb4e99 | 16334 | |
dee91e82 DE |
16335 | /* If we didn't find it, and not all dies have been loaded, |
16336 | load them all and try again. */ | |
16337 | ||
5afb4e99 DJ |
16338 | if (pd == NULL && per_cu->load_all_dies == 0) |
16339 | { | |
5afb4e99 | 16340 | per_cu->load_all_dies = 1; |
fd820528 DE |
16341 | |
16342 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
16343 | THIS_CU->cu may already be in use. So we can't just free it and | |
16344 | replace its DIEs with the ones we read in. Instead, we leave those | |
16345 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
16346 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
16347 | set. */ | |
dee91e82 | 16348 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
16349 | |
16350 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
16351 | } | |
16352 | ||
16353 | if (pd == NULL) | |
16354 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
16355 | _("could not find partial DIE 0x%x " |
16356 | "in cache [from module %s]\n"), | |
b64f50a1 | 16357 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 16358 | return pd; |
72bf9492 DJ |
16359 | } |
16360 | ||
abc72ce4 DE |
16361 | /* See if we can figure out if the class lives in a namespace. We do |
16362 | this by looking for a member function; its demangled name will | |
16363 | contain namespace info, if there is any. */ | |
16364 | ||
16365 | static void | |
16366 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
16367 | struct dwarf2_cu *cu) | |
16368 | { | |
16369 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
16370 | what template types look like, because the demangler | |
16371 | frequently doesn't give the same name as the debug info. We | |
16372 | could fix this by only using the demangled name to get the | |
16373 | prefix (but see comment in read_structure_type). */ | |
16374 | ||
16375 | struct partial_die_info *real_pdi; | |
16376 | struct partial_die_info *child_pdi; | |
16377 | ||
16378 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
16379 | we should not do this. We'll prepend the parent's fully qualified | |
16380 | name when we create the partial symbol. */ | |
16381 | ||
16382 | real_pdi = struct_pdi; | |
16383 | while (real_pdi->has_specification) | |
36586728 TT |
16384 | real_pdi = find_partial_die (real_pdi->spec_offset, |
16385 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
16386 | |
16387 | if (real_pdi->die_parent != NULL) | |
16388 | return; | |
16389 | ||
16390 | for (child_pdi = struct_pdi->die_child; | |
16391 | child_pdi != NULL; | |
16392 | child_pdi = child_pdi->die_sibling) | |
16393 | { | |
16394 | if (child_pdi->tag == DW_TAG_subprogram | |
16395 | && child_pdi->linkage_name != NULL) | |
16396 | { | |
16397 | char *actual_class_name | |
16398 | = language_class_name_from_physname (cu->language_defn, | |
16399 | child_pdi->linkage_name); | |
16400 | if (actual_class_name != NULL) | |
16401 | { | |
16402 | struct_pdi->name | |
224c3ddb SM |
16403 | = ((const char *) |
16404 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
16405 | actual_class_name, | |
16406 | strlen (actual_class_name))); | |
abc72ce4 DE |
16407 | xfree (actual_class_name); |
16408 | } | |
16409 | break; | |
16410 | } | |
16411 | } | |
16412 | } | |
16413 | ||
72bf9492 DJ |
16414 | /* Adjust PART_DIE before generating a symbol for it. This function |
16415 | may set the is_external flag or change the DIE's name. */ | |
16416 | ||
16417 | static void | |
16418 | fixup_partial_die (struct partial_die_info *part_die, | |
16419 | struct dwarf2_cu *cu) | |
16420 | { | |
abc72ce4 DE |
16421 | /* Once we've fixed up a die, there's no point in doing so again. |
16422 | This also avoids a memory leak if we were to call | |
16423 | guess_partial_die_structure_name multiple times. */ | |
16424 | if (part_die->fixup_called) | |
16425 | return; | |
16426 | ||
72bf9492 DJ |
16427 | /* If we found a reference attribute and the DIE has no name, try |
16428 | to find a name in the referred to DIE. */ | |
16429 | ||
16430 | if (part_die->name == NULL && part_die->has_specification) | |
16431 | { | |
16432 | struct partial_die_info *spec_die; | |
72bf9492 | 16433 | |
36586728 TT |
16434 | spec_die = find_partial_die (part_die->spec_offset, |
16435 | part_die->spec_is_dwz, cu); | |
72bf9492 | 16436 | |
10b3939b | 16437 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
16438 | |
16439 | if (spec_die->name) | |
16440 | { | |
16441 | part_die->name = spec_die->name; | |
16442 | ||
16443 | /* Copy DW_AT_external attribute if it is set. */ | |
16444 | if (spec_die->is_external) | |
16445 | part_die->is_external = spec_die->is_external; | |
16446 | } | |
16447 | } | |
16448 | ||
16449 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
16450 | |
16451 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 16452 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 16453 | |
abc72ce4 DE |
16454 | /* If there is no parent die to provide a namespace, and there are |
16455 | children, see if we can determine the namespace from their linkage | |
122d1940 | 16456 | name. */ |
abc72ce4 | 16457 | if (cu->language == language_cplus |
8b70b953 | 16458 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
16459 | && part_die->die_parent == NULL |
16460 | && part_die->has_children | |
16461 | && (part_die->tag == DW_TAG_class_type | |
16462 | || part_die->tag == DW_TAG_structure_type | |
16463 | || part_die->tag == DW_TAG_union_type)) | |
16464 | guess_partial_die_structure_name (part_die, cu); | |
16465 | ||
53832f31 TT |
16466 | /* GCC might emit a nameless struct or union that has a linkage |
16467 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
16468 | if (part_die->name == NULL | |
96408a79 SA |
16469 | && (part_die->tag == DW_TAG_class_type |
16470 | || part_die->tag == DW_TAG_interface_type | |
16471 | || part_die->tag == DW_TAG_structure_type | |
16472 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
16473 | && part_die->linkage_name != NULL) |
16474 | { | |
16475 | char *demangled; | |
16476 | ||
8de20a37 | 16477 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
16478 | if (demangled) |
16479 | { | |
96408a79 SA |
16480 | const char *base; |
16481 | ||
16482 | /* Strip any leading namespaces/classes, keep only the base name. | |
16483 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
16484 | base = strrchr (demangled, ':'); | |
16485 | if (base && base > demangled && base[-1] == ':') | |
16486 | base++; | |
16487 | else | |
16488 | base = demangled; | |
16489 | ||
34a68019 | 16490 | part_die->name |
224c3ddb SM |
16491 | = ((const char *) |
16492 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
16493 | base, strlen (base))); | |
53832f31 TT |
16494 | xfree (demangled); |
16495 | } | |
16496 | } | |
16497 | ||
abc72ce4 | 16498 | part_die->fixup_called = 1; |
72bf9492 DJ |
16499 | } |
16500 | ||
a8329558 | 16501 | /* Read an attribute value described by an attribute form. */ |
c906108c | 16502 | |
d521ce57 | 16503 | static const gdb_byte * |
dee91e82 DE |
16504 | read_attribute_value (const struct die_reader_specs *reader, |
16505 | struct attribute *attr, unsigned form, | |
43988095 | 16506 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 16507 | { |
dee91e82 | 16508 | struct dwarf2_cu *cu = reader->cu; |
3e29f34a MR |
16509 | struct objfile *objfile = cu->objfile; |
16510 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
dee91e82 | 16511 | bfd *abfd = reader->abfd; |
e7c27a73 | 16512 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16513 | unsigned int bytes_read; |
16514 | struct dwarf_block *blk; | |
16515 | ||
aead7601 | 16516 | attr->form = (enum dwarf_form) form; |
a8329558 | 16517 | switch (form) |
c906108c | 16518 | { |
c906108c | 16519 | case DW_FORM_ref_addr: |
ae411497 | 16520 | if (cu->header.version == 2) |
4568ecf9 | 16521 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 16522 | else |
4568ecf9 DE |
16523 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
16524 | &cu->header, &bytes_read); | |
ae411497 TT |
16525 | info_ptr += bytes_read; |
16526 | break; | |
36586728 TT |
16527 | case DW_FORM_GNU_ref_alt: |
16528 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16529 | info_ptr += bytes_read; | |
16530 | break; | |
ae411497 | 16531 | case DW_FORM_addr: |
e7c27a73 | 16532 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 16533 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 16534 | info_ptr += bytes_read; |
c906108c SS |
16535 | break; |
16536 | case DW_FORM_block2: | |
7b5a2f43 | 16537 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16538 | blk->size = read_2_bytes (abfd, info_ptr); |
16539 | info_ptr += 2; | |
16540 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16541 | info_ptr += blk->size; | |
16542 | DW_BLOCK (attr) = blk; | |
16543 | break; | |
16544 | case DW_FORM_block4: | |
7b5a2f43 | 16545 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16546 | blk->size = read_4_bytes (abfd, info_ptr); |
16547 | info_ptr += 4; | |
16548 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16549 | info_ptr += blk->size; | |
16550 | DW_BLOCK (attr) = blk; | |
16551 | break; | |
16552 | case DW_FORM_data2: | |
16553 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
16554 | info_ptr += 2; | |
16555 | break; | |
16556 | case DW_FORM_data4: | |
16557 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
16558 | info_ptr += 4; | |
16559 | break; | |
16560 | case DW_FORM_data8: | |
16561 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
16562 | info_ptr += 8; | |
16563 | break; | |
0224619f JK |
16564 | case DW_FORM_data16: |
16565 | blk = dwarf_alloc_block (cu); | |
16566 | blk->size = 16; | |
16567 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
16568 | info_ptr += 16; | |
16569 | DW_BLOCK (attr) = blk; | |
16570 | break; | |
2dc7f7b3 TT |
16571 | case DW_FORM_sec_offset: |
16572 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16573 | info_ptr += bytes_read; | |
16574 | break; | |
c906108c | 16575 | case DW_FORM_string: |
9b1c24c8 | 16576 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 16577 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
16578 | info_ptr += bytes_read; |
16579 | break; | |
4bdf3d34 | 16580 | case DW_FORM_strp: |
36586728 TT |
16581 | if (!cu->per_cu->is_dwz) |
16582 | { | |
16583 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
16584 | &bytes_read); | |
16585 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16586 | info_ptr += bytes_read; | |
16587 | break; | |
16588 | } | |
16589 | /* FALLTHROUGH */ | |
43988095 JK |
16590 | case DW_FORM_line_strp: |
16591 | if (!cu->per_cu->is_dwz) | |
16592 | { | |
16593 | DW_STRING (attr) = read_indirect_line_string (abfd, info_ptr, | |
16594 | cu_header, &bytes_read); | |
16595 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16596 | info_ptr += bytes_read; | |
16597 | break; | |
16598 | } | |
16599 | /* FALLTHROUGH */ | |
36586728 TT |
16600 | case DW_FORM_GNU_strp_alt: |
16601 | { | |
16602 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
16603 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
16604 | &bytes_read); | |
16605 | ||
16606 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
16607 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16608 | info_ptr += bytes_read; | |
16609 | } | |
4bdf3d34 | 16610 | break; |
2dc7f7b3 | 16611 | case DW_FORM_exprloc: |
c906108c | 16612 | case DW_FORM_block: |
7b5a2f43 | 16613 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16614 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16615 | info_ptr += bytes_read; | |
16616 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16617 | info_ptr += blk->size; | |
16618 | DW_BLOCK (attr) = blk; | |
16619 | break; | |
16620 | case DW_FORM_block1: | |
7b5a2f43 | 16621 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16622 | blk->size = read_1_byte (abfd, info_ptr); |
16623 | info_ptr += 1; | |
16624 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16625 | info_ptr += blk->size; | |
16626 | DW_BLOCK (attr) = blk; | |
16627 | break; | |
16628 | case DW_FORM_data1: | |
16629 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16630 | info_ptr += 1; | |
16631 | break; | |
16632 | case DW_FORM_flag: | |
16633 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16634 | info_ptr += 1; | |
16635 | break; | |
2dc7f7b3 TT |
16636 | case DW_FORM_flag_present: |
16637 | DW_UNSND (attr) = 1; | |
16638 | break; | |
c906108c SS |
16639 | case DW_FORM_sdata: |
16640 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
16641 | info_ptr += bytes_read; | |
16642 | break; | |
16643 | case DW_FORM_udata: | |
16644 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16645 | info_ptr += bytes_read; | |
16646 | break; | |
16647 | case DW_FORM_ref1: | |
4568ecf9 DE |
16648 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16649 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
16650 | info_ptr += 1; |
16651 | break; | |
16652 | case DW_FORM_ref2: | |
4568ecf9 DE |
16653 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16654 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
16655 | info_ptr += 2; |
16656 | break; | |
16657 | case DW_FORM_ref4: | |
4568ecf9 DE |
16658 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16659 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
16660 | info_ptr += 4; |
16661 | break; | |
613e1657 | 16662 | case DW_FORM_ref8: |
4568ecf9 DE |
16663 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16664 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
16665 | info_ptr += 8; |
16666 | break; | |
55f1336d | 16667 | case DW_FORM_ref_sig8: |
ac9ec31b | 16668 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
16669 | info_ptr += 8; |
16670 | break; | |
c906108c | 16671 | case DW_FORM_ref_udata: |
4568ecf9 DE |
16672 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16673 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
16674 | info_ptr += bytes_read; |
16675 | break; | |
c906108c | 16676 | case DW_FORM_indirect: |
a8329558 KW |
16677 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16678 | info_ptr += bytes_read; | |
43988095 JK |
16679 | if (form == DW_FORM_implicit_const) |
16680 | { | |
16681 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
16682 | info_ptr += bytes_read; | |
16683 | } | |
16684 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
16685 | info_ptr); | |
16686 | break; | |
16687 | case DW_FORM_implicit_const: | |
16688 | DW_SND (attr) = implicit_const; | |
a8329558 | 16689 | break; |
3019eac3 DE |
16690 | case DW_FORM_GNU_addr_index: |
16691 | if (reader->dwo_file == NULL) | |
16692 | { | |
16693 | /* For now flag a hard error. | |
16694 | Later we can turn this into a complaint. */ | |
16695 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16696 | dwarf_form_name (form), | |
16697 | bfd_get_filename (abfd)); | |
16698 | } | |
16699 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
16700 | info_ptr += bytes_read; | |
16701 | break; | |
16702 | case DW_FORM_GNU_str_index: | |
16703 | if (reader->dwo_file == NULL) | |
16704 | { | |
16705 | /* For now flag a hard error. | |
16706 | Later we can turn this into a complaint if warranted. */ | |
16707 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16708 | dwarf_form_name (form), | |
16709 | bfd_get_filename (abfd)); | |
16710 | } | |
16711 | { | |
16712 | ULONGEST str_index = | |
16713 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16714 | ||
342587c4 | 16715 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
16716 | DW_STRING_IS_CANONICAL (attr) = 0; |
16717 | info_ptr += bytes_read; | |
16718 | } | |
16719 | break; | |
c906108c | 16720 | default: |
8a3fe4f8 | 16721 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
16722 | dwarf_form_name (form), |
16723 | bfd_get_filename (abfd)); | |
c906108c | 16724 | } |
28e94949 | 16725 | |
36586728 | 16726 | /* Super hack. */ |
7771576e | 16727 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
16728 | attr->form = DW_FORM_GNU_ref_alt; |
16729 | ||
28e94949 JB |
16730 | /* We have seen instances where the compiler tried to emit a byte |
16731 | size attribute of -1 which ended up being encoded as an unsigned | |
16732 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
16733 | an object of this size seems pretty unlikely so we can relatively | |
16734 | safely treat these cases as if the size attribute was invalid and | |
16735 | treat them as zero by default. */ | |
16736 | if (attr->name == DW_AT_byte_size | |
16737 | && form == DW_FORM_data4 | |
16738 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
16739 | { |
16740 | complaint | |
16741 | (&symfile_complaints, | |
43bbcdc2 PH |
16742 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
16743 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
16744 | DW_UNSND (attr) = 0; |
16745 | } | |
28e94949 | 16746 | |
c906108c SS |
16747 | return info_ptr; |
16748 | } | |
16749 | ||
a8329558 KW |
16750 | /* Read an attribute described by an abbreviated attribute. */ |
16751 | ||
d521ce57 | 16752 | static const gdb_byte * |
dee91e82 DE |
16753 | read_attribute (const struct die_reader_specs *reader, |
16754 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 16755 | const gdb_byte *info_ptr) |
a8329558 KW |
16756 | { |
16757 | attr->name = abbrev->name; | |
43988095 JK |
16758 | return read_attribute_value (reader, attr, abbrev->form, |
16759 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
16760 | } |
16761 | ||
0963b4bd | 16762 | /* Read dwarf information from a buffer. */ |
c906108c SS |
16763 | |
16764 | static unsigned int | |
a1855c1d | 16765 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16766 | { |
fe1b8b76 | 16767 | return bfd_get_8 (abfd, buf); |
c906108c SS |
16768 | } |
16769 | ||
16770 | static int | |
a1855c1d | 16771 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16772 | { |
fe1b8b76 | 16773 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
16774 | } |
16775 | ||
16776 | static unsigned int | |
a1855c1d | 16777 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16778 | { |
fe1b8b76 | 16779 | return bfd_get_16 (abfd, buf); |
c906108c SS |
16780 | } |
16781 | ||
21ae7a4d | 16782 | static int |
a1855c1d | 16783 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16784 | { |
16785 | return bfd_get_signed_16 (abfd, buf); | |
16786 | } | |
16787 | ||
c906108c | 16788 | static unsigned int |
a1855c1d | 16789 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16790 | { |
fe1b8b76 | 16791 | return bfd_get_32 (abfd, buf); |
c906108c SS |
16792 | } |
16793 | ||
21ae7a4d | 16794 | static int |
a1855c1d | 16795 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16796 | { |
16797 | return bfd_get_signed_32 (abfd, buf); | |
16798 | } | |
16799 | ||
93311388 | 16800 | static ULONGEST |
a1855c1d | 16801 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16802 | { |
fe1b8b76 | 16803 | return bfd_get_64 (abfd, buf); |
c906108c SS |
16804 | } |
16805 | ||
16806 | static CORE_ADDR | |
d521ce57 | 16807 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 16808 | unsigned int *bytes_read) |
c906108c | 16809 | { |
e7c27a73 | 16810 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16811 | CORE_ADDR retval = 0; |
16812 | ||
107d2387 | 16813 | if (cu_header->signed_addr_p) |
c906108c | 16814 | { |
107d2387 AC |
16815 | switch (cu_header->addr_size) |
16816 | { | |
16817 | case 2: | |
fe1b8b76 | 16818 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
16819 | break; |
16820 | case 4: | |
fe1b8b76 | 16821 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
16822 | break; |
16823 | case 8: | |
fe1b8b76 | 16824 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
16825 | break; |
16826 | default: | |
8e65ff28 | 16827 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 16828 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 16829 | bfd_get_filename (abfd)); |
107d2387 AC |
16830 | } |
16831 | } | |
16832 | else | |
16833 | { | |
16834 | switch (cu_header->addr_size) | |
16835 | { | |
16836 | case 2: | |
fe1b8b76 | 16837 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
16838 | break; |
16839 | case 4: | |
fe1b8b76 | 16840 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
16841 | break; |
16842 | case 8: | |
fe1b8b76 | 16843 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
16844 | break; |
16845 | default: | |
8e65ff28 | 16846 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
16847 | _("read_address: bad switch, " |
16848 | "unsigned [in module %s]"), | |
659b0389 | 16849 | bfd_get_filename (abfd)); |
107d2387 | 16850 | } |
c906108c | 16851 | } |
64367e0a | 16852 | |
107d2387 AC |
16853 | *bytes_read = cu_header->addr_size; |
16854 | return retval; | |
c906108c SS |
16855 | } |
16856 | ||
f7ef9339 | 16857 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
16858 | specification allows the initial length to take up either 4 bytes |
16859 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
16860 | bytes describe the length and all offsets will be 8 bytes in length | |
16861 | instead of 4. | |
16862 | ||
f7ef9339 KB |
16863 | An older, non-standard 64-bit format is also handled by this |
16864 | function. The older format in question stores the initial length | |
16865 | as an 8-byte quantity without an escape value. Lengths greater | |
16866 | than 2^32 aren't very common which means that the initial 4 bytes | |
16867 | is almost always zero. Since a length value of zero doesn't make | |
16868 | sense for the 32-bit format, this initial zero can be considered to | |
16869 | be an escape value which indicates the presence of the older 64-bit | |
16870 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
16871 | greater than 4GB. If it becomes necessary to handle lengths |
16872 | somewhat larger than 4GB, we could allow other small values (such | |
16873 | as the non-sensical values of 1, 2, and 3) to also be used as | |
16874 | escape values indicating the presence of the old format. | |
f7ef9339 | 16875 | |
917c78fc MK |
16876 | The value returned via bytes_read should be used to increment the |
16877 | relevant pointer after calling read_initial_length(). | |
c764a876 | 16878 | |
613e1657 KB |
16879 | [ Note: read_initial_length() and read_offset() are based on the |
16880 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 16881 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
16882 | from: |
16883 | ||
f7ef9339 | 16884 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 16885 | |
613e1657 KB |
16886 | This document is only a draft and is subject to change. (So beware.) |
16887 | ||
f7ef9339 | 16888 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
16889 | determined empirically by examining 64-bit ELF files produced by |
16890 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
16891 | |
16892 | - Kevin, July 16, 2002 | |
613e1657 KB |
16893 | ] */ |
16894 | ||
16895 | static LONGEST | |
d521ce57 | 16896 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 16897 | { |
fe1b8b76 | 16898 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 16899 | |
dd373385 | 16900 | if (length == 0xffffffff) |
613e1657 | 16901 | { |
fe1b8b76 | 16902 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 16903 | *bytes_read = 12; |
613e1657 | 16904 | } |
dd373385 | 16905 | else if (length == 0) |
f7ef9339 | 16906 | { |
dd373385 | 16907 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 16908 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 16909 | *bytes_read = 8; |
f7ef9339 | 16910 | } |
613e1657 KB |
16911 | else |
16912 | { | |
16913 | *bytes_read = 4; | |
613e1657 KB |
16914 | } |
16915 | ||
c764a876 DE |
16916 | return length; |
16917 | } | |
dd373385 | 16918 | |
c764a876 DE |
16919 | /* Cover function for read_initial_length. |
16920 | Returns the length of the object at BUF, and stores the size of the | |
16921 | initial length in *BYTES_READ and stores the size that offsets will be in | |
16922 | *OFFSET_SIZE. | |
16923 | If the initial length size is not equivalent to that specified in | |
16924 | CU_HEADER then issue a complaint. | |
16925 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 16926 | |
c764a876 | 16927 | static LONGEST |
d521ce57 | 16928 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
16929 | const struct comp_unit_head *cu_header, |
16930 | unsigned int *bytes_read, | |
16931 | unsigned int *offset_size) | |
16932 | { | |
16933 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
16934 | ||
16935 | gdb_assert (cu_header->initial_length_size == 4 | |
16936 | || cu_header->initial_length_size == 8 | |
16937 | || cu_header->initial_length_size == 12); | |
16938 | ||
16939 | if (cu_header->initial_length_size != *bytes_read) | |
16940 | complaint (&symfile_complaints, | |
16941 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 16942 | |
c764a876 | 16943 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 16944 | return length; |
613e1657 KB |
16945 | } |
16946 | ||
16947 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 16948 | given by cu_header->offset_size. */ |
613e1657 KB |
16949 | |
16950 | static LONGEST | |
d521ce57 TT |
16951 | read_offset (bfd *abfd, const gdb_byte *buf, |
16952 | const struct comp_unit_head *cu_header, | |
891d2f0b | 16953 | unsigned int *bytes_read) |
c764a876 DE |
16954 | { |
16955 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 16956 | |
c764a876 DE |
16957 | *bytes_read = cu_header->offset_size; |
16958 | return offset; | |
16959 | } | |
16960 | ||
16961 | /* Read an offset from the data stream. */ | |
16962 | ||
16963 | static LONGEST | |
d521ce57 | 16964 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
16965 | { |
16966 | LONGEST retval = 0; | |
16967 | ||
c764a876 | 16968 | switch (offset_size) |
613e1657 KB |
16969 | { |
16970 | case 4: | |
fe1b8b76 | 16971 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
16972 | break; |
16973 | case 8: | |
fe1b8b76 | 16974 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
16975 | break; |
16976 | default: | |
8e65ff28 | 16977 | internal_error (__FILE__, __LINE__, |
c764a876 | 16978 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 16979 | bfd_get_filename (abfd)); |
613e1657 KB |
16980 | } |
16981 | ||
917c78fc | 16982 | return retval; |
613e1657 KB |
16983 | } |
16984 | ||
d521ce57 TT |
16985 | static const gdb_byte * |
16986 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
16987 | { |
16988 | /* If the size of a host char is 8 bits, we can return a pointer | |
16989 | to the buffer, otherwise we have to copy the data to a buffer | |
16990 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16991 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 16992 | return buf; |
c906108c SS |
16993 | } |
16994 | ||
d521ce57 TT |
16995 | static const char * |
16996 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
16997 | unsigned int *bytes_read_ptr) | |
c906108c SS |
16998 | { |
16999 | /* If the size of a host char is 8 bits, we can return a pointer | |
17000 | to the string, otherwise we have to copy the string to a buffer | |
17001 | allocated on the temporary obstack. */ | |
4bdf3d34 | 17002 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
17003 | if (*buf == '\0') |
17004 | { | |
17005 | *bytes_read_ptr = 1; | |
17006 | return NULL; | |
17007 | } | |
d521ce57 TT |
17008 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
17009 | return (const char *) buf; | |
4bdf3d34 JJ |
17010 | } |
17011 | ||
43988095 JK |
17012 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
17013 | reporting strings FORM_NAME and SECT_NAME. */ | |
17014 | ||
d521ce57 | 17015 | static const char * |
43988095 JK |
17016 | read_indirect_string_at_offset_from (bfd *abfd, LONGEST str_offset, |
17017 | struct dwarf2_section_info *sect, | |
17018 | const char *form_name, | |
17019 | const char *sect_name) | |
17020 | { | |
17021 | dwarf2_read_section (dwarf2_per_objfile->objfile, sect); | |
17022 | if (sect->buffer == NULL) | |
17023 | error (_("%s used without %s section [in module %s]"), | |
17024 | form_name, sect_name, bfd_get_filename (abfd)); | |
17025 | if (str_offset >= sect->size) | |
17026 | error (_("%s pointing outside of %s section [in module %s]"), | |
17027 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 17028 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 17029 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 17030 | return NULL; |
43988095 JK |
17031 | return (const char *) (sect->buffer + str_offset); |
17032 | } | |
17033 | ||
17034 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
17035 | ||
17036 | static const char * | |
17037 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) | |
17038 | { | |
17039 | return read_indirect_string_at_offset_from (abfd, str_offset, | |
17040 | &dwarf2_per_objfile->str, | |
17041 | "DW_FORM_strp", ".debug_str"); | |
17042 | } | |
17043 | ||
17044 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
17045 | ||
17046 | static const char * | |
17047 | read_indirect_line_string_at_offset (bfd *abfd, LONGEST str_offset) | |
17048 | { | |
17049 | return read_indirect_string_at_offset_from (abfd, str_offset, | |
17050 | &dwarf2_per_objfile->line_str, | |
17051 | "DW_FORM_line_strp", | |
17052 | ".debug_line_str"); | |
c906108c SS |
17053 | } |
17054 | ||
36586728 TT |
17055 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
17056 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
17057 | the string consists of a single NUL byte, return NULL; otherwise | |
17058 | return a pointer to the string. */ | |
17059 | ||
d521ce57 | 17060 | static const char * |
36586728 TT |
17061 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
17062 | { | |
17063 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
17064 | ||
17065 | if (dwz->str.buffer == NULL) | |
17066 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
17067 | "section [in module %s]"), | |
17068 | bfd_get_filename (dwz->dwz_bfd)); | |
17069 | if (str_offset >= dwz->str.size) | |
17070 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
17071 | ".debug_str section [in module %s]"), | |
17072 | bfd_get_filename (dwz->dwz_bfd)); | |
17073 | gdb_assert (HOST_CHAR_BIT == 8); | |
17074 | if (dwz->str.buffer[str_offset] == '\0') | |
17075 | return NULL; | |
d521ce57 | 17076 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
17077 | } |
17078 | ||
43988095 JK |
17079 | /* Return pointer to string at .debug_str offset as read from BUF. |
17080 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
17081 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
17082 | ||
d521ce57 TT |
17083 | static const char * |
17084 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
17085 | const struct comp_unit_head *cu_header, |
17086 | unsigned int *bytes_read_ptr) | |
17087 | { | |
17088 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
17089 | ||
17090 | return read_indirect_string_at_offset (abfd, str_offset); | |
17091 | } | |
17092 | ||
43988095 JK |
17093 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
17094 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
17095 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
17096 | ||
17097 | static const char * | |
17098 | read_indirect_line_string (bfd *abfd, const gdb_byte *buf, | |
17099 | const struct comp_unit_head *cu_header, | |
17100 | unsigned int *bytes_read_ptr) | |
17101 | { | |
17102 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
17103 | ||
17104 | return read_indirect_line_string_at_offset (abfd, str_offset); | |
17105 | } | |
17106 | ||
17107 | ULONGEST | |
d521ce57 | 17108 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 17109 | unsigned int *bytes_read_ptr) |
c906108c | 17110 | { |
12df843f | 17111 | ULONGEST result; |
ce5d95e1 | 17112 | unsigned int num_read; |
870f88f7 | 17113 | int shift; |
c906108c SS |
17114 | unsigned char byte; |
17115 | ||
17116 | result = 0; | |
17117 | shift = 0; | |
17118 | num_read = 0; | |
c906108c SS |
17119 | while (1) |
17120 | { | |
fe1b8b76 | 17121 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
17122 | buf++; |
17123 | num_read++; | |
12df843f | 17124 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
17125 | if ((byte & 128) == 0) |
17126 | { | |
17127 | break; | |
17128 | } | |
17129 | shift += 7; | |
17130 | } | |
17131 | *bytes_read_ptr = num_read; | |
17132 | return result; | |
17133 | } | |
17134 | ||
12df843f | 17135 | static LONGEST |
d521ce57 TT |
17136 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
17137 | unsigned int *bytes_read_ptr) | |
c906108c | 17138 | { |
12df843f | 17139 | LONGEST result; |
870f88f7 | 17140 | int shift, num_read; |
c906108c SS |
17141 | unsigned char byte; |
17142 | ||
17143 | result = 0; | |
17144 | shift = 0; | |
c906108c | 17145 | num_read = 0; |
c906108c SS |
17146 | while (1) |
17147 | { | |
fe1b8b76 | 17148 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
17149 | buf++; |
17150 | num_read++; | |
12df843f | 17151 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
17152 | shift += 7; |
17153 | if ((byte & 128) == 0) | |
17154 | { | |
17155 | break; | |
17156 | } | |
17157 | } | |
77e0b926 | 17158 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 17159 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
17160 | *bytes_read_ptr = num_read; |
17161 | return result; | |
17162 | } | |
17163 | ||
3019eac3 DE |
17164 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
17165 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
17166 | ADDR_SIZE is the size of addresses from the CU header. */ | |
17167 | ||
17168 | static CORE_ADDR | |
17169 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
17170 | { | |
17171 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
17172 | bfd *abfd = objfile->obfd; | |
17173 | const gdb_byte *info_ptr; | |
17174 | ||
17175 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
17176 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
17177 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 17178 | objfile_name (objfile)); |
3019eac3 DE |
17179 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
17180 | error (_("DW_FORM_addr_index pointing outside of " | |
17181 | ".debug_addr section [in module %s]"), | |
4262abfb | 17182 | objfile_name (objfile)); |
3019eac3 DE |
17183 | info_ptr = (dwarf2_per_objfile->addr.buffer |
17184 | + addr_base + addr_index * addr_size); | |
17185 | if (addr_size == 4) | |
17186 | return bfd_get_32 (abfd, info_ptr); | |
17187 | else | |
17188 | return bfd_get_64 (abfd, info_ptr); | |
17189 | } | |
17190 | ||
17191 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
17192 | ||
17193 | static CORE_ADDR | |
17194 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
17195 | { | |
17196 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
17197 | } | |
17198 | ||
17199 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
17200 | ||
17201 | static CORE_ADDR | |
d521ce57 | 17202 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
17203 | unsigned int *bytes_read) |
17204 | { | |
17205 | bfd *abfd = cu->objfile->obfd; | |
17206 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
17207 | ||
17208 | return read_addr_index (cu, addr_index); | |
17209 | } | |
17210 | ||
17211 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
17212 | back to dwarf2_read_addr_index. */ | |
17213 | ||
17214 | struct dwarf2_read_addr_index_data | |
17215 | { | |
17216 | ULONGEST addr_base; | |
17217 | int addr_size; | |
17218 | }; | |
17219 | ||
17220 | /* die_reader_func for dwarf2_read_addr_index. */ | |
17221 | ||
17222 | static void | |
17223 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 17224 | const gdb_byte *info_ptr, |
3019eac3 DE |
17225 | struct die_info *comp_unit_die, |
17226 | int has_children, | |
17227 | void *data) | |
17228 | { | |
17229 | struct dwarf2_cu *cu = reader->cu; | |
17230 | struct dwarf2_read_addr_index_data *aidata = | |
17231 | (struct dwarf2_read_addr_index_data *) data; | |
17232 | ||
17233 | aidata->addr_base = cu->addr_base; | |
17234 | aidata->addr_size = cu->header.addr_size; | |
17235 | } | |
17236 | ||
17237 | /* Given an index in .debug_addr, fetch the value. | |
17238 | NOTE: This can be called during dwarf expression evaluation, | |
17239 | long after the debug information has been read, and thus per_cu->cu | |
17240 | may no longer exist. */ | |
17241 | ||
17242 | CORE_ADDR | |
17243 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
17244 | unsigned int addr_index) | |
17245 | { | |
17246 | struct objfile *objfile = per_cu->objfile; | |
17247 | struct dwarf2_cu *cu = per_cu->cu; | |
17248 | ULONGEST addr_base; | |
17249 | int addr_size; | |
17250 | ||
17251 | /* This is intended to be called from outside this file. */ | |
17252 | dw2_setup (objfile); | |
17253 | ||
17254 | /* We need addr_base and addr_size. | |
17255 | If we don't have PER_CU->cu, we have to get it. | |
17256 | Nasty, but the alternative is storing the needed info in PER_CU, | |
17257 | which at this point doesn't seem justified: it's not clear how frequently | |
17258 | it would get used and it would increase the size of every PER_CU. | |
17259 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
17260 | so we're not in uncharted territory here. | |
17261 | Alas we need to be a bit more complicated as addr_base is contained | |
17262 | in the DIE. | |
17263 | ||
17264 | We don't need to read the entire CU(/TU). | |
17265 | We just need the header and top level die. | |
a1b64ce1 | 17266 | |
3019eac3 | 17267 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 17268 | For now we skip this optimization. */ |
3019eac3 DE |
17269 | |
17270 | if (cu != NULL) | |
17271 | { | |
17272 | addr_base = cu->addr_base; | |
17273 | addr_size = cu->header.addr_size; | |
17274 | } | |
17275 | else | |
17276 | { | |
17277 | struct dwarf2_read_addr_index_data aidata; | |
17278 | ||
a1b64ce1 DE |
17279 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
17280 | we need addr_base. */ | |
17281 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
17282 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
17283 | addr_base = aidata.addr_base; |
17284 | addr_size = aidata.addr_size; | |
17285 | } | |
17286 | ||
17287 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
17288 | } | |
17289 | ||
57d63ce2 DE |
17290 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
17291 | This is only used by the Fission support. */ | |
3019eac3 | 17292 | |
d521ce57 | 17293 | static const char * |
342587c4 | 17294 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 DE |
17295 | { |
17296 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
c5164cbc | 17297 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 17298 | bfd *abfd = objfile->obfd; |
342587c4 | 17299 | struct dwarf2_cu *cu = reader->cu; |
73869dc2 DE |
17300 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
17301 | struct dwarf2_section_info *str_offsets_section = | |
17302 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 17303 | const gdb_byte *info_ptr; |
3019eac3 | 17304 | ULONGEST str_offset; |
57d63ce2 | 17305 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 17306 | |
73869dc2 DE |
17307 | dwarf2_read_section (objfile, str_section); |
17308 | dwarf2_read_section (objfile, str_offsets_section); | |
17309 | if (str_section->buffer == NULL) | |
57d63ce2 | 17310 | error (_("%s used without .debug_str.dwo section" |
3019eac3 | 17311 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 17312 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 17313 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 17314 | error (_("%s used without .debug_str_offsets.dwo section" |
3019eac3 | 17315 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 17316 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 17317 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 17318 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
3019eac3 | 17319 | " section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 17320 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 17321 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
17322 | + str_index * cu->header.offset_size); |
17323 | if (cu->header.offset_size == 4) | |
17324 | str_offset = bfd_get_32 (abfd, info_ptr); | |
17325 | else | |
17326 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 17327 | if (str_offset >= str_section->size) |
57d63ce2 | 17328 | error (_("Offset from %s pointing outside of" |
3019eac3 | 17329 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 17330 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 17331 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
17332 | } |
17333 | ||
3019eac3 DE |
17334 | /* Return the length of an LEB128 number in BUF. */ |
17335 | ||
17336 | static int | |
17337 | leb128_size (const gdb_byte *buf) | |
17338 | { | |
17339 | const gdb_byte *begin = buf; | |
17340 | gdb_byte byte; | |
17341 | ||
17342 | while (1) | |
17343 | { | |
17344 | byte = *buf++; | |
17345 | if ((byte & 128) == 0) | |
17346 | return buf - begin; | |
17347 | } | |
17348 | } | |
17349 | ||
c906108c | 17350 | static void |
e142c38c | 17351 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
17352 | { |
17353 | switch (lang) | |
17354 | { | |
17355 | case DW_LANG_C89: | |
76bee0cc | 17356 | case DW_LANG_C99: |
0cfd832f | 17357 | case DW_LANG_C11: |
c906108c | 17358 | case DW_LANG_C: |
d1be3247 | 17359 | case DW_LANG_UPC: |
e142c38c | 17360 | cu->language = language_c; |
c906108c | 17361 | break; |
9c37b5ae | 17362 | case DW_LANG_Java: |
c906108c | 17363 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
17364 | case DW_LANG_C_plus_plus_11: |
17365 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 17366 | cu->language = language_cplus; |
c906108c | 17367 | break; |
6aecb9c2 JB |
17368 | case DW_LANG_D: |
17369 | cu->language = language_d; | |
17370 | break; | |
c906108c SS |
17371 | case DW_LANG_Fortran77: |
17372 | case DW_LANG_Fortran90: | |
b21b22e0 | 17373 | case DW_LANG_Fortran95: |
f7de9aab MW |
17374 | case DW_LANG_Fortran03: |
17375 | case DW_LANG_Fortran08: | |
e142c38c | 17376 | cu->language = language_fortran; |
c906108c | 17377 | break; |
a766d390 DE |
17378 | case DW_LANG_Go: |
17379 | cu->language = language_go; | |
17380 | break; | |
c906108c | 17381 | case DW_LANG_Mips_Assembler: |
e142c38c | 17382 | cu->language = language_asm; |
c906108c SS |
17383 | break; |
17384 | case DW_LANG_Ada83: | |
8aaf0b47 | 17385 | case DW_LANG_Ada95: |
bc5f45f8 JB |
17386 | cu->language = language_ada; |
17387 | break; | |
72019c9c GM |
17388 | case DW_LANG_Modula2: |
17389 | cu->language = language_m2; | |
17390 | break; | |
fe8e67fd PM |
17391 | case DW_LANG_Pascal83: |
17392 | cu->language = language_pascal; | |
17393 | break; | |
22566fbd DJ |
17394 | case DW_LANG_ObjC: |
17395 | cu->language = language_objc; | |
17396 | break; | |
c44af4eb TT |
17397 | case DW_LANG_Rust: |
17398 | case DW_LANG_Rust_old: | |
17399 | cu->language = language_rust; | |
17400 | break; | |
c906108c SS |
17401 | case DW_LANG_Cobol74: |
17402 | case DW_LANG_Cobol85: | |
c906108c | 17403 | default: |
e142c38c | 17404 | cu->language = language_minimal; |
c906108c SS |
17405 | break; |
17406 | } | |
e142c38c | 17407 | cu->language_defn = language_def (cu->language); |
c906108c SS |
17408 | } |
17409 | ||
17410 | /* Return the named attribute or NULL if not there. */ | |
17411 | ||
17412 | static struct attribute * | |
e142c38c | 17413 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 17414 | { |
a48e046c | 17415 | for (;;) |
c906108c | 17416 | { |
a48e046c TT |
17417 | unsigned int i; |
17418 | struct attribute *spec = NULL; | |
17419 | ||
17420 | for (i = 0; i < die->num_attrs; ++i) | |
17421 | { | |
17422 | if (die->attrs[i].name == name) | |
17423 | return &die->attrs[i]; | |
17424 | if (die->attrs[i].name == DW_AT_specification | |
17425 | || die->attrs[i].name == DW_AT_abstract_origin) | |
17426 | spec = &die->attrs[i]; | |
17427 | } | |
17428 | ||
17429 | if (!spec) | |
17430 | break; | |
c906108c | 17431 | |
f2f0e013 | 17432 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 17433 | } |
c5aa993b | 17434 | |
c906108c SS |
17435 | return NULL; |
17436 | } | |
17437 | ||
348e048f DE |
17438 | /* Return the named attribute or NULL if not there, |
17439 | but do not follow DW_AT_specification, etc. | |
17440 | This is for use in contexts where we're reading .debug_types dies. | |
17441 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
17442 | back up the chain, and we want to go down. */ | |
17443 | ||
17444 | static struct attribute * | |
45e58e77 | 17445 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
17446 | { |
17447 | unsigned int i; | |
17448 | ||
17449 | for (i = 0; i < die->num_attrs; ++i) | |
17450 | if (die->attrs[i].name == name) | |
17451 | return &die->attrs[i]; | |
17452 | ||
17453 | return NULL; | |
17454 | } | |
17455 | ||
7d45c7c3 KB |
17456 | /* Return the string associated with a string-typed attribute, or NULL if it |
17457 | is either not found or is of an incorrect type. */ | |
17458 | ||
17459 | static const char * | |
17460 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
17461 | { | |
17462 | struct attribute *attr; | |
17463 | const char *str = NULL; | |
17464 | ||
17465 | attr = dwarf2_attr (die, name, cu); | |
17466 | ||
17467 | if (attr != NULL) | |
17468 | { | |
43988095 JK |
17469 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
17470 | || attr->form == DW_FORM_string || attr->form == DW_FORM_GNU_strp_alt) | |
7d45c7c3 KB |
17471 | str = DW_STRING (attr); |
17472 | else | |
17473 | complaint (&symfile_complaints, | |
17474 | _("string type expected for attribute %s for " | |
17475 | "DIE at 0x%x in module %s"), | |
17476 | dwarf_attr_name (name), die->offset.sect_off, | |
17477 | objfile_name (cu->objfile)); | |
17478 | } | |
17479 | ||
17480 | return str; | |
17481 | } | |
17482 | ||
05cf31d1 JB |
17483 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
17484 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 17485 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
17486 | |
17487 | static int | |
17488 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
17489 | { | |
17490 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
17491 | ||
17492 | return (attr && DW_UNSND (attr)); | |
17493 | } | |
17494 | ||
3ca72b44 | 17495 | static int |
e142c38c | 17496 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 17497 | { |
05cf31d1 JB |
17498 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
17499 | which value is non-zero. However, we have to be careful with | |
17500 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
17501 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
17502 | end up accidently finding a declaration attribute that belongs | |
17503 | to a different DIE referenced by the specification attribute, | |
17504 | even though the given DIE does not have a declaration attribute. */ | |
17505 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
17506 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
17507 | } |
17508 | ||
63d06c5c | 17509 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 17510 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
17511 | containing the return value on output. If there is no |
17512 | specification, but there is an abstract origin, that is | |
17513 | returned. */ | |
63d06c5c DC |
17514 | |
17515 | static struct die_info * | |
f2f0e013 | 17516 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 17517 | { |
f2f0e013 DJ |
17518 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
17519 | *spec_cu); | |
63d06c5c | 17520 | |
edb3359d DJ |
17521 | if (spec_attr == NULL) |
17522 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
17523 | ||
63d06c5c DC |
17524 | if (spec_attr == NULL) |
17525 | return NULL; | |
17526 | else | |
f2f0e013 | 17527 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 17528 | } |
c906108c | 17529 | |
debd256d | 17530 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
17531 | refers to. |
17532 | NOTE: This is also used as a "cleanup" function. */ | |
17533 | ||
debd256d JB |
17534 | static void |
17535 | free_line_header (struct line_header *lh) | |
17536 | { | |
17537 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 17538 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
17539 | |
17540 | /* Remember that all the lh->file_names[i].name pointers are | |
17541 | pointers into debug_line_buffer, and don't need to be freed. */ | |
17542 | if (lh->file_names) | |
a8bc7b56 | 17543 | xfree (lh->file_names); |
debd256d JB |
17544 | |
17545 | /* Similarly for the include directory names. */ | |
17546 | if (lh->include_dirs) | |
a8bc7b56 | 17547 | xfree (lh->include_dirs); |
debd256d | 17548 | |
a8bc7b56 | 17549 | xfree (lh); |
debd256d JB |
17550 | } |
17551 | ||
527f3840 JK |
17552 | /* Stub for free_line_header to match void * callback types. */ |
17553 | ||
17554 | static void | |
17555 | free_line_header_voidp (void *arg) | |
17556 | { | |
9a3c8263 | 17557 | struct line_header *lh = (struct line_header *) arg; |
527f3840 JK |
17558 | |
17559 | free_line_header (lh); | |
17560 | } | |
17561 | ||
debd256d | 17562 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 17563 | |
debd256d | 17564 | static void |
d521ce57 | 17565 | add_include_dir (struct line_header *lh, const char *include_dir) |
c906108c | 17566 | { |
27e0867f DE |
17567 | if (dwarf_line_debug >= 2) |
17568 | fprintf_unfiltered (gdb_stdlog, "Adding dir %u: %s\n", | |
17569 | lh->num_include_dirs + 1, include_dir); | |
17570 | ||
debd256d JB |
17571 | /* Grow the array if necessary. */ |
17572 | if (lh->include_dirs_size == 0) | |
c5aa993b | 17573 | { |
debd256d | 17574 | lh->include_dirs_size = 1; /* for testing */ |
8d749320 | 17575 | lh->include_dirs = XNEWVEC (const char *, lh->include_dirs_size); |
debd256d JB |
17576 | } |
17577 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
17578 | { | |
17579 | lh->include_dirs_size *= 2; | |
8d749320 SM |
17580 | lh->include_dirs = XRESIZEVEC (const char *, lh->include_dirs, |
17581 | lh->include_dirs_size); | |
c5aa993b | 17582 | } |
c906108c | 17583 | |
debd256d JB |
17584 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
17585 | } | |
6e70227d | 17586 | |
debd256d | 17587 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 17588 | |
debd256d JB |
17589 | static void |
17590 | add_file_name (struct line_header *lh, | |
d521ce57 | 17591 | const char *name, |
debd256d JB |
17592 | unsigned int dir_index, |
17593 | unsigned int mod_time, | |
17594 | unsigned int length) | |
17595 | { | |
17596 | struct file_entry *fe; | |
17597 | ||
27e0867f DE |
17598 | if (dwarf_line_debug >= 2) |
17599 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
17600 | lh->num_file_names + 1, name); | |
17601 | ||
debd256d JB |
17602 | /* Grow the array if necessary. */ |
17603 | if (lh->file_names_size == 0) | |
17604 | { | |
17605 | lh->file_names_size = 1; /* for testing */ | |
8d749320 | 17606 | lh->file_names = XNEWVEC (struct file_entry, lh->file_names_size); |
debd256d JB |
17607 | } |
17608 | else if (lh->num_file_names >= lh->file_names_size) | |
17609 | { | |
17610 | lh->file_names_size *= 2; | |
224c3ddb SM |
17611 | lh->file_names |
17612 | = XRESIZEVEC (struct file_entry, lh->file_names, lh->file_names_size); | |
debd256d JB |
17613 | } |
17614 | ||
17615 | fe = &lh->file_names[lh->num_file_names++]; | |
17616 | fe->name = name; | |
17617 | fe->dir_index = dir_index; | |
17618 | fe->mod_time = mod_time; | |
17619 | fe->length = length; | |
aaa75496 | 17620 | fe->included_p = 0; |
cb1df416 | 17621 | fe->symtab = NULL; |
debd256d | 17622 | } |
6e70227d | 17623 | |
83769d0b | 17624 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
17625 | |
17626 | static struct dwarf2_section_info * | |
17627 | get_debug_line_section (struct dwarf2_cu *cu) | |
17628 | { | |
17629 | struct dwarf2_section_info *section; | |
17630 | ||
17631 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
17632 | DWO file. */ | |
17633 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
17634 | section = &cu->dwo_unit->dwo_file->sections.line; | |
17635 | else if (cu->per_cu->is_dwz) | |
17636 | { | |
17637 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
17638 | ||
17639 | section = &dwz->line; | |
17640 | } | |
17641 | else | |
17642 | section = &dwarf2_per_objfile->line; | |
17643 | ||
17644 | return section; | |
17645 | } | |
17646 | ||
43988095 JK |
17647 | /* Forwarding function for read_formatted_entries. */ |
17648 | ||
17649 | static void | |
17650 | add_include_dir_stub (struct line_header *lh, const char *name, | |
17651 | unsigned int dir_index, unsigned int mod_time, | |
17652 | unsigned int length) | |
17653 | { | |
17654 | add_include_dir (lh, name); | |
17655 | } | |
17656 | ||
17657 | /* Read directory or file name entry format, starting with byte of | |
17658 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
17659 | entries count and the entries themselves in the described entry | |
17660 | format. */ | |
17661 | ||
17662 | static void | |
17663 | read_formatted_entries (bfd *abfd, const gdb_byte **bufp, | |
17664 | struct line_header *lh, | |
17665 | const struct comp_unit_head *cu_header, | |
17666 | void (*callback) (struct line_header *lh, | |
17667 | const char *name, | |
17668 | unsigned int dir_index, | |
17669 | unsigned int mod_time, | |
17670 | unsigned int length)) | |
17671 | { | |
17672 | gdb_byte format_count, formati; | |
17673 | ULONGEST data_count, datai; | |
17674 | const gdb_byte *buf = *bufp; | |
17675 | const gdb_byte *format_header_data; | |
17676 | int i; | |
17677 | unsigned int bytes_read; | |
17678 | ||
17679 | format_count = read_1_byte (abfd, buf); | |
17680 | buf += 1; | |
17681 | format_header_data = buf; | |
17682 | for (formati = 0; formati < format_count; formati++) | |
17683 | { | |
17684 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
17685 | buf += bytes_read; | |
17686 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
17687 | buf += bytes_read; | |
17688 | } | |
17689 | ||
17690 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
17691 | buf += bytes_read; | |
17692 | for (datai = 0; datai < data_count; datai++) | |
17693 | { | |
17694 | const gdb_byte *format = format_header_data; | |
17695 | struct file_entry fe; | |
17696 | ||
17697 | memset (&fe, 0, sizeof (fe)); | |
17698 | ||
17699 | for (formati = 0; formati < format_count; formati++) | |
17700 | { | |
17701 | ULONGEST content_type, form; | |
17702 | const char *string_trash; | |
17703 | const char **stringp = &string_trash; | |
17704 | unsigned int uint_trash, *uintp = &uint_trash; | |
17705 | ||
17706 | content_type = read_unsigned_leb128 (abfd, format, &bytes_read); | |
17707 | format += bytes_read; | |
17708 | switch (content_type) | |
17709 | { | |
17710 | case DW_LNCT_path: | |
17711 | stringp = &fe.name; | |
17712 | break; | |
17713 | case DW_LNCT_directory_index: | |
17714 | uintp = &fe.dir_index; | |
17715 | break; | |
17716 | case DW_LNCT_timestamp: | |
17717 | uintp = &fe.mod_time; | |
17718 | break; | |
17719 | case DW_LNCT_size: | |
17720 | uintp = &fe.length; | |
17721 | break; | |
17722 | case DW_LNCT_MD5: | |
17723 | break; | |
17724 | default: | |
17725 | complaint (&symfile_complaints, | |
17726 | _("Unknown format content type %s"), | |
17727 | pulongest (content_type)); | |
17728 | } | |
17729 | ||
17730 | form = read_unsigned_leb128 (abfd, format, &bytes_read); | |
17731 | format += bytes_read; | |
17732 | switch (form) | |
17733 | { | |
17734 | case DW_FORM_string: | |
17735 | *stringp = read_direct_string (abfd, buf, &bytes_read); | |
17736 | buf += bytes_read; | |
17737 | break; | |
17738 | ||
17739 | case DW_FORM_line_strp: | |
17740 | *stringp = read_indirect_line_string (abfd, buf, cu_header, &bytes_read); | |
17741 | buf += bytes_read; | |
17742 | break; | |
17743 | ||
17744 | case DW_FORM_data1: | |
17745 | *uintp = read_1_byte (abfd, buf); | |
17746 | buf += 1; | |
17747 | break; | |
17748 | ||
17749 | case DW_FORM_data2: | |
17750 | *uintp = read_2_bytes (abfd, buf); | |
17751 | buf += 2; | |
17752 | break; | |
17753 | ||
17754 | case DW_FORM_data4: | |
17755 | *uintp = read_4_bytes (abfd, buf); | |
17756 | buf += 4; | |
17757 | break; | |
17758 | ||
17759 | case DW_FORM_data8: | |
17760 | *uintp = read_8_bytes (abfd, buf); | |
17761 | buf += 8; | |
17762 | break; | |
17763 | ||
17764 | case DW_FORM_udata: | |
17765 | *uintp = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
17766 | buf += bytes_read; | |
17767 | break; | |
17768 | ||
17769 | case DW_FORM_block: | |
17770 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
17771 | current GDB. */ | |
17772 | break; | |
17773 | } | |
17774 | } | |
17775 | ||
17776 | callback (lh, fe.name, fe.dir_index, fe.mod_time, fe.length); | |
17777 | } | |
17778 | ||
17779 | *bufp = buf; | |
17780 | } | |
17781 | ||
debd256d | 17782 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 17783 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 17784 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
17785 | Returns NULL if there is a problem reading the header, e.g., if it |
17786 | has a version we don't understand. | |
debd256d JB |
17787 | |
17788 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
17789 | the returned object point into the dwarf line section buffer, |
17790 | and must not be freed. */ | |
ae2de4f8 | 17791 | |
debd256d | 17792 | static struct line_header * |
3019eac3 | 17793 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
17794 | { |
17795 | struct cleanup *back_to; | |
17796 | struct line_header *lh; | |
d521ce57 | 17797 | const gdb_byte *line_ptr; |
c764a876 | 17798 | unsigned int bytes_read, offset_size; |
debd256d | 17799 | int i; |
d521ce57 | 17800 | const char *cur_dir, *cur_file; |
3019eac3 DE |
17801 | struct dwarf2_section_info *section; |
17802 | bfd *abfd; | |
17803 | ||
36586728 | 17804 | section = get_debug_line_section (cu); |
3019eac3 DE |
17805 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
17806 | if (section->buffer == NULL) | |
debd256d | 17807 | { |
3019eac3 DE |
17808 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
17809 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
17810 | else | |
17811 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
17812 | return 0; |
17813 | } | |
17814 | ||
fceca515 DE |
17815 | /* We can't do this until we know the section is non-empty. |
17816 | Only then do we know we have such a section. */ | |
a32a8923 | 17817 | abfd = get_section_bfd_owner (section); |
fceca515 | 17818 | |
a738430d MK |
17819 | /* Make sure that at least there's room for the total_length field. |
17820 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 17821 | if (offset + 4 >= section->size) |
debd256d | 17822 | { |
4d3c2250 | 17823 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
17824 | return 0; |
17825 | } | |
17826 | ||
8d749320 | 17827 | lh = XNEW (struct line_header); |
debd256d JB |
17828 | memset (lh, 0, sizeof (*lh)); |
17829 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
17830 | (void *) lh); | |
17831 | ||
527f3840 JK |
17832 | lh->offset.sect_off = offset; |
17833 | lh->offset_in_dwz = cu->per_cu->is_dwz; | |
17834 | ||
3019eac3 | 17835 | line_ptr = section->buffer + offset; |
debd256d | 17836 | |
a738430d | 17837 | /* Read in the header. */ |
6e70227d | 17838 | lh->total_length = |
c764a876 DE |
17839 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
17840 | &bytes_read, &offset_size); | |
debd256d | 17841 | line_ptr += bytes_read; |
3019eac3 | 17842 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 17843 | { |
4d3c2250 | 17844 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
2f324bf6 | 17845 | do_cleanups (back_to); |
debd256d JB |
17846 | return 0; |
17847 | } | |
17848 | lh->statement_program_end = line_ptr + lh->total_length; | |
17849 | lh->version = read_2_bytes (abfd, line_ptr); | |
17850 | line_ptr += 2; | |
43988095 | 17851 | if (lh->version > 5) |
cd366ee8 DE |
17852 | { |
17853 | /* This is a version we don't understand. The format could have | |
17854 | changed in ways we don't handle properly so just punt. */ | |
17855 | complaint (&symfile_complaints, | |
17856 | _("unsupported version in .debug_line section")); | |
17857 | return NULL; | |
17858 | } | |
43988095 JK |
17859 | if (lh->version >= 5) |
17860 | { | |
17861 | gdb_byte segment_selector_size; | |
17862 | ||
17863 | /* Skip address size. */ | |
17864 | read_1_byte (abfd, line_ptr); | |
17865 | line_ptr += 1; | |
17866 | ||
17867 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
17868 | line_ptr += 1; | |
17869 | if (segment_selector_size != 0) | |
17870 | { | |
17871 | complaint (&symfile_complaints, | |
17872 | _("unsupported segment selector size %u " | |
17873 | "in .debug_line section"), | |
17874 | segment_selector_size); | |
17875 | return NULL; | |
17876 | } | |
17877 | } | |
c764a876 DE |
17878 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
17879 | line_ptr += offset_size; | |
debd256d JB |
17880 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
17881 | line_ptr += 1; | |
2dc7f7b3 TT |
17882 | if (lh->version >= 4) |
17883 | { | |
17884 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
17885 | line_ptr += 1; | |
17886 | } | |
17887 | else | |
17888 | lh->maximum_ops_per_instruction = 1; | |
17889 | ||
17890 | if (lh->maximum_ops_per_instruction == 0) | |
17891 | { | |
17892 | lh->maximum_ops_per_instruction = 1; | |
17893 | complaint (&symfile_complaints, | |
3e43a32a MS |
17894 | _("invalid maximum_ops_per_instruction " |
17895 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
17896 | } |
17897 | ||
debd256d JB |
17898 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
17899 | line_ptr += 1; | |
17900 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
17901 | line_ptr += 1; | |
17902 | lh->line_range = read_1_byte (abfd, line_ptr); | |
17903 | line_ptr += 1; | |
17904 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
17905 | line_ptr += 1; | |
8d749320 | 17906 | lh->standard_opcode_lengths = XNEWVEC (unsigned char, lh->opcode_base); |
debd256d JB |
17907 | |
17908 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
17909 | for (i = 1; i < lh->opcode_base; ++i) | |
17910 | { | |
17911 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
17912 | line_ptr += 1; | |
17913 | } | |
17914 | ||
43988095 | 17915 | if (lh->version >= 5) |
debd256d | 17916 | { |
43988095 JK |
17917 | /* Read directory table. */ |
17918 | read_formatted_entries (abfd, &line_ptr, lh, &cu->header, | |
17919 | add_include_dir_stub); | |
debd256d | 17920 | |
43988095 JK |
17921 | /* Read file name table. */ |
17922 | read_formatted_entries (abfd, &line_ptr, lh, &cu->header, add_file_name); | |
17923 | } | |
17924 | else | |
debd256d | 17925 | { |
43988095 JK |
17926 | /* Read directory table. */ |
17927 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
17928 | { | |
17929 | line_ptr += bytes_read; | |
17930 | add_include_dir (lh, cur_dir); | |
17931 | } | |
debd256d JB |
17932 | line_ptr += bytes_read; |
17933 | ||
43988095 JK |
17934 | /* Read file name table. */ |
17935 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
17936 | { | |
17937 | unsigned int dir_index, mod_time, length; | |
17938 | ||
17939 | line_ptr += bytes_read; | |
17940 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17941 | line_ptr += bytes_read; | |
17942 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17943 | line_ptr += bytes_read; | |
17944 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17945 | line_ptr += bytes_read; | |
17946 | ||
17947 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
17948 | } | |
17949 | line_ptr += bytes_read; | |
debd256d | 17950 | } |
6e70227d | 17951 | lh->statement_program_start = line_ptr; |
debd256d | 17952 | |
3019eac3 | 17953 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 17954 | complaint (&symfile_complaints, |
3e43a32a MS |
17955 | _("line number info header doesn't " |
17956 | "fit in `.debug_line' section")); | |
debd256d JB |
17957 | |
17958 | discard_cleanups (back_to); | |
17959 | return lh; | |
17960 | } | |
c906108c | 17961 | |
c6da4cef DE |
17962 | /* Subroutine of dwarf_decode_lines to simplify it. |
17963 | Return the file name of the psymtab for included file FILE_INDEX | |
17964 | in line header LH of PST. | |
17965 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17966 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
17967 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
17968 | ||
17969 | The function creates dangling cleanup registration. */ | |
c6da4cef | 17970 | |
d521ce57 | 17971 | static const char * |
c6da4cef DE |
17972 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
17973 | const struct partial_symtab *pst, | |
17974 | const char *comp_dir) | |
17975 | { | |
17976 | const struct file_entry fe = lh->file_names [file_index]; | |
d521ce57 TT |
17977 | const char *include_name = fe.name; |
17978 | const char *include_name_to_compare = include_name; | |
17979 | const char *dir_name = NULL; | |
72b9f47f TT |
17980 | const char *pst_filename; |
17981 | char *copied_name = NULL; | |
c6da4cef DE |
17982 | int file_is_pst; |
17983 | ||
afa6c9ab | 17984 | if (fe.dir_index && lh->include_dirs != NULL) |
c6da4cef DE |
17985 | dir_name = lh->include_dirs[fe.dir_index - 1]; |
17986 | ||
17987 | if (!IS_ABSOLUTE_PATH (include_name) | |
17988 | && (dir_name != NULL || comp_dir != NULL)) | |
17989 | { | |
17990 | /* Avoid creating a duplicate psymtab for PST. | |
17991 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
17992 | Before we do the comparison, however, we need to account | |
17993 | for DIR_NAME and COMP_DIR. | |
17994 | First prepend dir_name (if non-NULL). If we still don't | |
17995 | have an absolute path prepend comp_dir (if non-NULL). | |
17996 | However, the directory we record in the include-file's | |
17997 | psymtab does not contain COMP_DIR (to match the | |
17998 | corresponding symtab(s)). | |
17999 | ||
18000 | Example: | |
18001 | ||
18002 | bash$ cd /tmp | |
18003 | bash$ gcc -g ./hello.c | |
18004 | include_name = "hello.c" | |
18005 | dir_name = "." | |
18006 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
18007 | DW_AT_name = "./hello.c" |
18008 | ||
18009 | */ | |
c6da4cef DE |
18010 | |
18011 | if (dir_name != NULL) | |
18012 | { | |
d521ce57 TT |
18013 | char *tem = concat (dir_name, SLASH_STRING, |
18014 | include_name, (char *)NULL); | |
18015 | ||
18016 | make_cleanup (xfree, tem); | |
18017 | include_name = tem; | |
c6da4cef | 18018 | include_name_to_compare = include_name; |
c6da4cef DE |
18019 | } |
18020 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
18021 | { | |
d521ce57 TT |
18022 | char *tem = concat (comp_dir, SLASH_STRING, |
18023 | include_name, (char *)NULL); | |
18024 | ||
18025 | make_cleanup (xfree, tem); | |
18026 | include_name_to_compare = tem; | |
c6da4cef DE |
18027 | } |
18028 | } | |
18029 | ||
18030 | pst_filename = pst->filename; | |
18031 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
18032 | { | |
72b9f47f TT |
18033 | copied_name = concat (pst->dirname, SLASH_STRING, |
18034 | pst_filename, (char *)NULL); | |
18035 | pst_filename = copied_name; | |
c6da4cef DE |
18036 | } |
18037 | ||
1e3fad37 | 18038 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 18039 | |
72b9f47f TT |
18040 | if (copied_name != NULL) |
18041 | xfree (copied_name); | |
c6da4cef DE |
18042 | |
18043 | if (file_is_pst) | |
18044 | return NULL; | |
18045 | return include_name; | |
18046 | } | |
18047 | ||
d9b3de22 DE |
18048 | /* State machine to track the state of the line number program. */ |
18049 | ||
18050 | typedef struct | |
18051 | { | |
18052 | /* These are part of the standard DWARF line number state machine. */ | |
18053 | ||
18054 | unsigned char op_index; | |
18055 | unsigned int file; | |
18056 | unsigned int line; | |
18057 | CORE_ADDR address; | |
18058 | int is_stmt; | |
18059 | unsigned int discriminator; | |
18060 | ||
18061 | /* Additional bits of state we need to track. */ | |
18062 | ||
18063 | /* The last file that we called dwarf2_start_subfile for. | |
18064 | This is only used for TLLs. */ | |
18065 | unsigned int last_file; | |
18066 | /* The last file a line number was recorded for. */ | |
18067 | struct subfile *last_subfile; | |
18068 | ||
18069 | /* The function to call to record a line. */ | |
18070 | record_line_ftype *record_line; | |
18071 | ||
18072 | /* The last line number that was recorded, used to coalesce | |
18073 | consecutive entries for the same line. This can happen, for | |
18074 | example, when discriminators are present. PR 17276. */ | |
18075 | unsigned int last_line; | |
18076 | int line_has_non_zero_discriminator; | |
18077 | } lnp_state_machine; | |
18078 | ||
18079 | /* There's a lot of static state to pass to dwarf_record_line. | |
18080 | This keeps it all together. */ | |
18081 | ||
18082 | typedef struct | |
18083 | { | |
18084 | /* The gdbarch. */ | |
18085 | struct gdbarch *gdbarch; | |
18086 | ||
18087 | /* The line number header. */ | |
18088 | struct line_header *line_header; | |
18089 | ||
18090 | /* Non-zero if we're recording lines. | |
18091 | Otherwise we're building partial symtabs and are just interested in | |
18092 | finding include files mentioned by the line number program. */ | |
18093 | int record_lines_p; | |
18094 | } lnp_reader_state; | |
18095 | ||
c91513d8 PP |
18096 | /* Ignore this record_line request. */ |
18097 | ||
18098 | static void | |
18099 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
18100 | { | |
18101 | return; | |
18102 | } | |
18103 | ||
a05a36a5 DE |
18104 | /* Return non-zero if we should add LINE to the line number table. |
18105 | LINE is the line to add, LAST_LINE is the last line that was added, | |
18106 | LAST_SUBFILE is the subfile for LAST_LINE. | |
18107 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
18108 | had a non-zero discriminator. | |
18109 | ||
18110 | We have to be careful in the presence of discriminators. | |
18111 | E.g., for this line: | |
18112 | ||
18113 | for (i = 0; i < 100000; i++); | |
18114 | ||
18115 | clang can emit four line number entries for that one line, | |
18116 | each with a different discriminator. | |
18117 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
18118 | ||
18119 | However, we want gdb to coalesce all four entries into one. | |
18120 | Otherwise the user could stepi into the middle of the line and | |
18121 | gdb would get confused about whether the pc really was in the | |
18122 | middle of the line. | |
18123 | ||
18124 | Things are further complicated by the fact that two consecutive | |
18125 | line number entries for the same line is a heuristic used by gcc | |
18126 | to denote the end of the prologue. So we can't just discard duplicate | |
18127 | entries, we have to be selective about it. The heuristic we use is | |
18128 | that we only collapse consecutive entries for the same line if at least | |
18129 | one of those entries has a non-zero discriminator. PR 17276. | |
18130 | ||
18131 | Note: Addresses in the line number state machine can never go backwards | |
18132 | within one sequence, thus this coalescing is ok. */ | |
18133 | ||
18134 | static int | |
18135 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
18136 | int line_has_non_zero_discriminator, | |
18137 | struct subfile *last_subfile) | |
18138 | { | |
18139 | if (current_subfile != last_subfile) | |
18140 | return 1; | |
18141 | if (line != last_line) | |
18142 | return 1; | |
18143 | /* Same line for the same file that we've seen already. | |
18144 | As a last check, for pr 17276, only record the line if the line | |
18145 | has never had a non-zero discriminator. */ | |
18146 | if (!line_has_non_zero_discriminator) | |
18147 | return 1; | |
18148 | return 0; | |
18149 | } | |
18150 | ||
252a6764 DE |
18151 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
18152 | in the line table of subfile SUBFILE. */ | |
18153 | ||
18154 | static void | |
d9b3de22 DE |
18155 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
18156 | unsigned int line, CORE_ADDR address, | |
18157 | record_line_ftype p_record_line) | |
252a6764 DE |
18158 | { |
18159 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
18160 | ||
27e0867f DE |
18161 | if (dwarf_line_debug) |
18162 | { | |
18163 | fprintf_unfiltered (gdb_stdlog, | |
18164 | "Recording line %u, file %s, address %s\n", | |
18165 | line, lbasename (subfile->name), | |
18166 | paddress (gdbarch, address)); | |
18167 | } | |
18168 | ||
d5962de5 | 18169 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
18170 | } |
18171 | ||
18172 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
18173 | Mark the end of a set of line number records. | |
d9b3de22 | 18174 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
18175 | If SUBFILE is NULL the request is ignored. */ |
18176 | ||
18177 | static void | |
18178 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
18179 | CORE_ADDR address, record_line_ftype p_record_line) | |
18180 | { | |
27e0867f DE |
18181 | if (subfile == NULL) |
18182 | return; | |
18183 | ||
18184 | if (dwarf_line_debug) | |
18185 | { | |
18186 | fprintf_unfiltered (gdb_stdlog, | |
18187 | "Finishing current line, file %s, address %s\n", | |
18188 | lbasename (subfile->name), | |
18189 | paddress (gdbarch, address)); | |
18190 | } | |
18191 | ||
d9b3de22 DE |
18192 | dwarf_record_line_1 (gdbarch, subfile, 0, address, p_record_line); |
18193 | } | |
18194 | ||
18195 | /* Record the line in STATE. | |
18196 | END_SEQUENCE is non-zero if we're processing the end of a sequence. */ | |
18197 | ||
18198 | static void | |
18199 | dwarf_record_line (lnp_reader_state *reader, lnp_state_machine *state, | |
18200 | int end_sequence) | |
18201 | { | |
18202 | const struct line_header *lh = reader->line_header; | |
18203 | unsigned int file, line, discriminator; | |
18204 | int is_stmt; | |
18205 | ||
18206 | file = state->file; | |
18207 | line = state->line; | |
18208 | is_stmt = state->is_stmt; | |
18209 | discriminator = state->discriminator; | |
18210 | ||
18211 | if (dwarf_line_debug) | |
18212 | { | |
18213 | fprintf_unfiltered (gdb_stdlog, | |
18214 | "Processing actual line %u: file %u," | |
18215 | " address %s, is_stmt %u, discrim %u\n", | |
18216 | line, file, | |
18217 | paddress (reader->gdbarch, state->address), | |
18218 | is_stmt, discriminator); | |
18219 | } | |
18220 | ||
18221 | if (file == 0 || file - 1 >= lh->num_file_names) | |
18222 | dwarf2_debug_line_missing_file_complaint (); | |
18223 | /* For now we ignore lines not starting on an instruction boundary. | |
18224 | But not when processing end_sequence for compatibility with the | |
18225 | previous version of the code. */ | |
18226 | else if (state->op_index == 0 || end_sequence) | |
18227 | { | |
18228 | lh->file_names[file - 1].included_p = 1; | |
18229 | if (reader->record_lines_p && is_stmt) | |
18230 | { | |
e815d2d2 | 18231 | if (state->last_subfile != current_subfile || end_sequence) |
d9b3de22 DE |
18232 | { |
18233 | dwarf_finish_line (reader->gdbarch, state->last_subfile, | |
18234 | state->address, state->record_line); | |
18235 | } | |
18236 | ||
18237 | if (!end_sequence) | |
18238 | { | |
18239 | if (dwarf_record_line_p (line, state->last_line, | |
18240 | state->line_has_non_zero_discriminator, | |
18241 | state->last_subfile)) | |
18242 | { | |
18243 | dwarf_record_line_1 (reader->gdbarch, current_subfile, | |
18244 | line, state->address, | |
18245 | state->record_line); | |
18246 | } | |
18247 | state->last_subfile = current_subfile; | |
18248 | state->last_line = line; | |
18249 | } | |
18250 | } | |
18251 | } | |
18252 | } | |
18253 | ||
18254 | /* Initialize STATE for the start of a line number program. */ | |
18255 | ||
18256 | static void | |
18257 | init_lnp_state_machine (lnp_state_machine *state, | |
18258 | const lnp_reader_state *reader) | |
18259 | { | |
18260 | memset (state, 0, sizeof (*state)); | |
18261 | ||
18262 | /* Just starting, there is no "last file". */ | |
18263 | state->last_file = 0; | |
18264 | state->last_subfile = NULL; | |
18265 | ||
18266 | state->record_line = record_line; | |
18267 | ||
18268 | state->last_line = 0; | |
18269 | state->line_has_non_zero_discriminator = 0; | |
18270 | ||
18271 | /* Initialize these according to the DWARF spec. */ | |
18272 | state->op_index = 0; | |
18273 | state->file = 1; | |
18274 | state->line = 1; | |
18275 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there | |
18276 | was a line entry for it so that the backend has a chance to adjust it | |
18277 | and also record it in case it needs it. This is currently used by MIPS | |
18278 | code, cf. `mips_adjust_dwarf2_line'. */ | |
18279 | state->address = gdbarch_adjust_dwarf2_line (reader->gdbarch, 0, 0); | |
18280 | state->is_stmt = reader->line_header->default_is_stmt; | |
18281 | state->discriminator = 0; | |
252a6764 DE |
18282 | } |
18283 | ||
924c2928 DE |
18284 | /* Check address and if invalid nop-out the rest of the lines in this |
18285 | sequence. */ | |
18286 | ||
18287 | static void | |
d9b3de22 | 18288 | check_line_address (struct dwarf2_cu *cu, lnp_state_machine *state, |
924c2928 DE |
18289 | const gdb_byte *line_ptr, |
18290 | CORE_ADDR lowpc, CORE_ADDR address) | |
18291 | { | |
18292 | /* If address < lowpc then it's not a usable value, it's outside the | |
18293 | pc range of the CU. However, we restrict the test to only address | |
18294 | values of zero to preserve GDB's previous behaviour which is to | |
18295 | handle the specific case of a function being GC'd by the linker. */ | |
18296 | ||
18297 | if (address == 0 && address < lowpc) | |
18298 | { | |
18299 | /* This line table is for a function which has been | |
18300 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
18301 | ||
18302 | struct objfile *objfile = cu->objfile; | |
18303 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; | |
18304 | ||
18305 | complaint (&symfile_complaints, | |
18306 | _(".debug_line address at offset 0x%lx is 0 [in module %s]"), | |
18307 | line_offset, objfile_name (objfile)); | |
d9b3de22 DE |
18308 | state->record_line = noop_record_line; |
18309 | /* Note: sm.record_line is left as noop_record_line | |
924c2928 DE |
18310 | until we see DW_LNE_end_sequence. */ |
18311 | } | |
18312 | } | |
18313 | ||
f3f5162e | 18314 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
18315 | Process the line number information in LH. |
18316 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
18317 | program in order to set included_p for every referenced header. */ | |
debd256d | 18318 | |
c906108c | 18319 | static void |
43f3e411 DE |
18320 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
18321 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 18322 | { |
d521ce57 TT |
18323 | const gdb_byte *line_ptr, *extended_end; |
18324 | const gdb_byte *line_end; | |
a8c50c1f | 18325 | unsigned int bytes_read, extended_len; |
699ca60a | 18326 | unsigned char op_code, extended_op; |
e142c38c DJ |
18327 | CORE_ADDR baseaddr; |
18328 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 18329 | bfd *abfd = objfile->obfd; |
fbf65064 | 18330 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
d9b3de22 DE |
18331 | /* Non-zero if we're recording line info (as opposed to building partial |
18332 | symtabs). */ | |
18333 | int record_lines_p = !decode_for_pst_p; | |
18334 | /* A collection of things we need to pass to dwarf_record_line. */ | |
18335 | lnp_reader_state reader_state; | |
e142c38c DJ |
18336 | |
18337 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 18338 | |
debd256d JB |
18339 | line_ptr = lh->statement_program_start; |
18340 | line_end = lh->statement_program_end; | |
c906108c | 18341 | |
d9b3de22 DE |
18342 | reader_state.gdbarch = gdbarch; |
18343 | reader_state.line_header = lh; | |
18344 | reader_state.record_lines_p = record_lines_p; | |
18345 | ||
c906108c SS |
18346 | /* Read the statement sequences until there's nothing left. */ |
18347 | while (line_ptr < line_end) | |
18348 | { | |
d9b3de22 DE |
18349 | /* The DWARF line number program state machine. */ |
18350 | lnp_state_machine state_machine; | |
c906108c | 18351 | int end_sequence = 0; |
d9b3de22 DE |
18352 | |
18353 | /* Reset the state machine at the start of each sequence. */ | |
18354 | init_lnp_state_machine (&state_machine, &reader_state); | |
18355 | ||
18356 | if (record_lines_p && lh->num_file_names >= state_machine.file) | |
c906108c | 18357 | { |
aaa75496 | 18358 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
18359 | /* lh->include_dirs and lh->file_names are 0-based, but the |
18360 | directory and file name numbers in the statement program | |
18361 | are 1-based. */ | |
d9b3de22 | 18362 | struct file_entry *fe = &lh->file_names[state_machine.file - 1]; |
d521ce57 | 18363 | const char *dir = NULL; |
a738430d | 18364 | |
afa6c9ab | 18365 | if (fe->dir_index && lh->include_dirs != NULL) |
debd256d | 18366 | dir = lh->include_dirs[fe->dir_index - 1]; |
4f1520fb | 18367 | |
4d663531 | 18368 | dwarf2_start_subfile (fe->name, dir); |
c906108c SS |
18369 | } |
18370 | ||
a738430d | 18371 | /* Decode the table. */ |
d9b3de22 | 18372 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
18373 | { |
18374 | op_code = read_1_byte (abfd, line_ptr); | |
18375 | line_ptr += 1; | |
9aa1fe7e | 18376 | |
debd256d | 18377 | if (op_code >= lh->opcode_base) |
6e70227d | 18378 | { |
8e07a239 | 18379 | /* Special opcode. */ |
699ca60a | 18380 | unsigned char adj_opcode; |
3e29f34a | 18381 | CORE_ADDR addr_adj; |
a05a36a5 | 18382 | int line_delta; |
8e07a239 | 18383 | |
debd256d | 18384 | adj_opcode = op_code - lh->opcode_base; |
d9b3de22 DE |
18385 | addr_adj = (((state_machine.op_index |
18386 | + (adj_opcode / lh->line_range)) | |
2dc7f7b3 TT |
18387 | / lh->maximum_ops_per_instruction) |
18388 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
18389 | state_machine.address |
18390 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
18391 | state_machine.op_index = ((state_machine.op_index | |
18392 | + (adj_opcode / lh->line_range)) | |
18393 | % lh->maximum_ops_per_instruction); | |
a05a36a5 | 18394 | line_delta = lh->line_base + (adj_opcode % lh->line_range); |
d9b3de22 | 18395 | state_machine.line += line_delta; |
a05a36a5 | 18396 | if (line_delta != 0) |
d9b3de22 DE |
18397 | state_machine.line_has_non_zero_discriminator |
18398 | = state_machine.discriminator != 0; | |
18399 | ||
18400 | dwarf_record_line (&reader_state, &state_machine, 0); | |
18401 | state_machine.discriminator = 0; | |
9aa1fe7e GK |
18402 | } |
18403 | else switch (op_code) | |
c906108c SS |
18404 | { |
18405 | case DW_LNS_extended_op: | |
3e43a32a MS |
18406 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
18407 | &bytes_read); | |
473b7be6 | 18408 | line_ptr += bytes_read; |
a8c50c1f | 18409 | extended_end = line_ptr + extended_len; |
c906108c SS |
18410 | extended_op = read_1_byte (abfd, line_ptr); |
18411 | line_ptr += 1; | |
18412 | switch (extended_op) | |
18413 | { | |
18414 | case DW_LNE_end_sequence: | |
d9b3de22 | 18415 | state_machine.record_line = record_line; |
c906108c | 18416 | end_sequence = 1; |
c906108c SS |
18417 | break; |
18418 | case DW_LNE_set_address: | |
d9b3de22 DE |
18419 | { |
18420 | CORE_ADDR address | |
18421 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
18422 | ||
18423 | line_ptr += bytes_read; | |
18424 | check_line_address (cu, &state_machine, line_ptr, | |
18425 | lowpc, address); | |
18426 | state_machine.op_index = 0; | |
18427 | address += baseaddr; | |
18428 | state_machine.address | |
18429 | = gdbarch_adjust_dwarf2_line (gdbarch, address, 0); | |
18430 | } | |
c906108c SS |
18431 | break; |
18432 | case DW_LNE_define_file: | |
debd256d | 18433 | { |
d521ce57 | 18434 | const char *cur_file; |
debd256d | 18435 | unsigned int dir_index, mod_time, length; |
6e70227d | 18436 | |
3e43a32a MS |
18437 | cur_file = read_direct_string (abfd, line_ptr, |
18438 | &bytes_read); | |
debd256d JB |
18439 | line_ptr += bytes_read; |
18440 | dir_index = | |
18441 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18442 | line_ptr += bytes_read; | |
18443 | mod_time = | |
18444 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18445 | line_ptr += bytes_read; | |
18446 | length = | |
18447 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18448 | line_ptr += bytes_read; | |
18449 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
18450 | } | |
c906108c | 18451 | break; |
d0c6ba3d CC |
18452 | case DW_LNE_set_discriminator: |
18453 | /* The discriminator is not interesting to the debugger; | |
a05a36a5 DE |
18454 | just ignore it. We still need to check its value though: |
18455 | if there are consecutive entries for the same | |
18456 | (non-prologue) line we want to coalesce them. | |
18457 | PR 17276. */ | |
d9b3de22 DE |
18458 | state_machine.discriminator |
18459 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18460 | state_machine.line_has_non_zero_discriminator | |
18461 | |= state_machine.discriminator != 0; | |
a05a36a5 | 18462 | line_ptr += bytes_read; |
d0c6ba3d | 18463 | break; |
c906108c | 18464 | default: |
4d3c2250 | 18465 | complaint (&symfile_complaints, |
e2e0b3e5 | 18466 | _("mangled .debug_line section")); |
debd256d | 18467 | return; |
c906108c | 18468 | } |
a8c50c1f DJ |
18469 | /* Make sure that we parsed the extended op correctly. If e.g. |
18470 | we expected a different address size than the producer used, | |
18471 | we may have read the wrong number of bytes. */ | |
18472 | if (line_ptr != extended_end) | |
18473 | { | |
18474 | complaint (&symfile_complaints, | |
18475 | _("mangled .debug_line section")); | |
18476 | return; | |
18477 | } | |
c906108c SS |
18478 | break; |
18479 | case DW_LNS_copy: | |
d9b3de22 DE |
18480 | dwarf_record_line (&reader_state, &state_machine, 0); |
18481 | state_machine.discriminator = 0; | |
c906108c SS |
18482 | break; |
18483 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
18484 | { |
18485 | CORE_ADDR adjust | |
18486 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
3e29f34a | 18487 | CORE_ADDR addr_adj; |
2dc7f7b3 | 18488 | |
d9b3de22 | 18489 | addr_adj = (((state_machine.op_index + adjust) |
2dc7f7b3 TT |
18490 | / lh->maximum_ops_per_instruction) |
18491 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
18492 | state_machine.address |
18493 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
18494 | state_machine.op_index = ((state_machine.op_index + adjust) | |
18495 | % lh->maximum_ops_per_instruction); | |
2dc7f7b3 TT |
18496 | line_ptr += bytes_read; |
18497 | } | |
c906108c SS |
18498 | break; |
18499 | case DW_LNS_advance_line: | |
a05a36a5 DE |
18500 | { |
18501 | int line_delta | |
18502 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
18503 | ||
d9b3de22 | 18504 | state_machine.line += line_delta; |
a05a36a5 | 18505 | if (line_delta != 0) |
d9b3de22 DE |
18506 | state_machine.line_has_non_zero_discriminator |
18507 | = state_machine.discriminator != 0; | |
a05a36a5 DE |
18508 | line_ptr += bytes_read; |
18509 | } | |
c906108c SS |
18510 | break; |
18511 | case DW_LNS_set_file: | |
d9b3de22 DE |
18512 | { |
18513 | /* The arrays lh->include_dirs and lh->file_names are | |
18514 | 0-based, but the directory and file name numbers in | |
18515 | the statement program are 1-based. */ | |
18516 | struct file_entry *fe; | |
18517 | const char *dir = NULL; | |
18518 | ||
18519 | state_machine.file = read_unsigned_leb128 (abfd, line_ptr, | |
18520 | &bytes_read); | |
18521 | line_ptr += bytes_read; | |
18522 | if (state_machine.file == 0 | |
18523 | || state_machine.file - 1 >= lh->num_file_names) | |
18524 | dwarf2_debug_line_missing_file_complaint (); | |
18525 | else | |
18526 | { | |
18527 | fe = &lh->file_names[state_machine.file - 1]; | |
18528 | if (fe->dir_index && lh->include_dirs != NULL) | |
18529 | dir = lh->include_dirs[fe->dir_index - 1]; | |
18530 | if (record_lines_p) | |
18531 | { | |
18532 | state_machine.last_subfile = current_subfile; | |
18533 | state_machine.line_has_non_zero_discriminator | |
18534 | = state_machine.discriminator != 0; | |
18535 | dwarf2_start_subfile (fe->name, dir); | |
18536 | } | |
18537 | } | |
18538 | } | |
c906108c SS |
18539 | break; |
18540 | case DW_LNS_set_column: | |
0ad93d4f | 18541 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
18542 | line_ptr += bytes_read; |
18543 | break; | |
18544 | case DW_LNS_negate_stmt: | |
d9b3de22 | 18545 | state_machine.is_stmt = (!state_machine.is_stmt); |
c906108c SS |
18546 | break; |
18547 | case DW_LNS_set_basic_block: | |
c906108c | 18548 | break; |
c2c6d25f JM |
18549 | /* Add to the address register of the state machine the |
18550 | address increment value corresponding to special opcode | |
a738430d MK |
18551 | 255. I.e., this value is scaled by the minimum |
18552 | instruction length since special opcode 255 would have | |
b021a221 | 18553 | scaled the increment. */ |
c906108c | 18554 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
18555 | { |
18556 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
3e29f34a | 18557 | CORE_ADDR addr_adj; |
2dc7f7b3 | 18558 | |
d9b3de22 | 18559 | addr_adj = (((state_machine.op_index + adjust) |
2dc7f7b3 TT |
18560 | / lh->maximum_ops_per_instruction) |
18561 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
18562 | state_machine.address |
18563 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
18564 | state_machine.op_index = ((state_machine.op_index + adjust) | |
18565 | % lh->maximum_ops_per_instruction); | |
2dc7f7b3 | 18566 | } |
c906108c SS |
18567 | break; |
18568 | case DW_LNS_fixed_advance_pc: | |
3e29f34a MR |
18569 | { |
18570 | CORE_ADDR addr_adj; | |
18571 | ||
18572 | addr_adj = read_2_bytes (abfd, line_ptr); | |
d9b3de22 DE |
18573 | state_machine.address |
18574 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
18575 | state_machine.op_index = 0; | |
3e29f34a MR |
18576 | line_ptr += 2; |
18577 | } | |
c906108c | 18578 | break; |
9aa1fe7e | 18579 | default: |
a738430d MK |
18580 | { |
18581 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 18582 | int i; |
a738430d | 18583 | |
debd256d | 18584 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
18585 | { |
18586 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18587 | line_ptr += bytes_read; | |
18588 | } | |
18589 | } | |
c906108c SS |
18590 | } |
18591 | } | |
d9b3de22 DE |
18592 | |
18593 | if (!end_sequence) | |
18594 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
18595 | ||
18596 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
18597 | in which case we still finish recording the last line). */ | |
18598 | dwarf_record_line (&reader_state, &state_machine, 1); | |
c906108c | 18599 | } |
f3f5162e DE |
18600 | } |
18601 | ||
18602 | /* Decode the Line Number Program (LNP) for the given line_header | |
18603 | structure and CU. The actual information extracted and the type | |
18604 | of structures created from the LNP depends on the value of PST. | |
18605 | ||
18606 | 1. If PST is NULL, then this procedure uses the data from the program | |
18607 | to create all necessary symbol tables, and their linetables. | |
18608 | ||
18609 | 2. If PST is not NULL, this procedure reads the program to determine | |
18610 | the list of files included by the unit represented by PST, and | |
18611 | builds all the associated partial symbol tables. | |
18612 | ||
18613 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
18614 | It is used for relative paths in the line table. | |
18615 | NOTE: When processing partial symtabs (pst != NULL), | |
18616 | comp_dir == pst->dirname. | |
18617 | ||
18618 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
18619 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
18620 | symtab we don't use it in the name of the psymtabs we create. | |
18621 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
18622 | A good testcase for this is mb-inline.exp. |
18623 | ||
527f3840 JK |
18624 | LOWPC is the lowest address in CU (or 0 if not known). |
18625 | ||
18626 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
18627 | for its PC<->lines mapping information. Otherwise only the filename | |
18628 | table is read in. */ | |
f3f5162e DE |
18629 | |
18630 | static void | |
18631 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 18632 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 18633 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e DE |
18634 | { |
18635 | struct objfile *objfile = cu->objfile; | |
18636 | const int decode_for_pst_p = (pst != NULL); | |
f3f5162e | 18637 | |
527f3840 JK |
18638 | if (decode_mapping) |
18639 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
18640 | |
18641 | if (decode_for_pst_p) | |
18642 | { | |
18643 | int file_index; | |
18644 | ||
18645 | /* Now that we're done scanning the Line Header Program, we can | |
18646 | create the psymtab of each included file. */ | |
18647 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
18648 | if (lh->file_names[file_index].included_p == 1) | |
18649 | { | |
d521ce57 | 18650 | const char *include_name = |
c6da4cef DE |
18651 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
18652 | if (include_name != NULL) | |
aaa75496 JB |
18653 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
18654 | } | |
18655 | } | |
cb1df416 DJ |
18656 | else |
18657 | { | |
18658 | /* Make sure a symtab is created for every file, even files | |
18659 | which contain only variables (i.e. no code with associated | |
18660 | line numbers). */ | |
43f3e411 | 18661 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 18662 | int i; |
cb1df416 DJ |
18663 | |
18664 | for (i = 0; i < lh->num_file_names; i++) | |
18665 | { | |
d521ce57 | 18666 | const char *dir = NULL; |
f3f5162e | 18667 | struct file_entry *fe; |
9a619af0 | 18668 | |
cb1df416 | 18669 | fe = &lh->file_names[i]; |
afa6c9ab | 18670 | if (fe->dir_index && lh->include_dirs != NULL) |
cb1df416 | 18671 | dir = lh->include_dirs[fe->dir_index - 1]; |
4d663531 | 18672 | dwarf2_start_subfile (fe->name, dir); |
cb1df416 | 18673 | |
cb1df416 | 18674 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
18675 | { |
18676 | current_subfile->symtab | |
18677 | = allocate_symtab (cust, current_subfile->name); | |
18678 | } | |
cb1df416 DJ |
18679 | fe->symtab = current_subfile->symtab; |
18680 | } | |
18681 | } | |
c906108c SS |
18682 | } |
18683 | ||
18684 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
18685 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 18686 | or NULL if not known. |
c906108c SS |
18687 | This routine tries to keep line numbers from identical absolute and |
18688 | relative file names in a common subfile. | |
18689 | ||
18690 | Using the `list' example from the GDB testsuite, which resides in | |
18691 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
18692 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
18693 | ||
c5aa993b | 18694 | DW_AT_name: /srcdir/list0.c |
4d663531 | 18695 | DW_AT_comp_dir: /compdir |
357e46e7 | 18696 | files.files[0].name: list0.h |
c5aa993b | 18697 | files.files[0].dir: /srcdir |
357e46e7 | 18698 | files.files[1].name: list0.c |
c5aa993b | 18699 | files.files[1].dir: /srcdir |
c906108c SS |
18700 | |
18701 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
18702 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
18703 | start_subfile will ensure that this happens provided that we pass the | |
18704 | concatenation of files.files[1].dir and files.files[1].name as the | |
18705 | subfile's name. */ | |
c906108c SS |
18706 | |
18707 | static void | |
4d663531 | 18708 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 18709 | { |
d521ce57 | 18710 | char *copy = NULL; |
4f1520fb | 18711 | |
4d663531 | 18712 | /* In order not to lose the line information directory, |
4f1520fb FR |
18713 | we concatenate it to the filename when it makes sense. |
18714 | Note that the Dwarf3 standard says (speaking of filenames in line | |
18715 | information): ``The directory index is ignored for file names | |
18716 | that represent full path names''. Thus ignoring dirname in the | |
18717 | `else' branch below isn't an issue. */ | |
c906108c | 18718 | |
d5166ae1 | 18719 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
18720 | { |
18721 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
18722 | filename = copy; | |
18723 | } | |
c906108c | 18724 | |
4d663531 | 18725 | start_subfile (filename); |
4f1520fb | 18726 | |
d521ce57 TT |
18727 | if (copy != NULL) |
18728 | xfree (copy); | |
c906108c SS |
18729 | } |
18730 | ||
f4dc4d17 DE |
18731 | /* Start a symtab for DWARF. |
18732 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
18733 | ||
43f3e411 | 18734 | static struct compunit_symtab * |
f4dc4d17 | 18735 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 18736 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 18737 | { |
43f3e411 DE |
18738 | struct compunit_symtab *cust |
18739 | = start_symtab (cu->objfile, name, comp_dir, low_pc); | |
18740 | ||
f4dc4d17 DE |
18741 | record_debugformat ("DWARF 2"); |
18742 | record_producer (cu->producer); | |
18743 | ||
18744 | /* We assume that we're processing GCC output. */ | |
18745 | processing_gcc_compilation = 2; | |
18746 | ||
4d4ec4e5 | 18747 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
18748 | |
18749 | return cust; | |
f4dc4d17 DE |
18750 | } |
18751 | ||
4c2df51b DJ |
18752 | static void |
18753 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 18754 | struct dwarf2_cu *cu) |
4c2df51b | 18755 | { |
e7c27a73 DJ |
18756 | struct objfile *objfile = cu->objfile; |
18757 | struct comp_unit_head *cu_header = &cu->header; | |
18758 | ||
4c2df51b DJ |
18759 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
18760 | code here to turn a symbol with DW_AT_external and a | |
18761 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
18762 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
18763 | with some versions of binutils) where shared libraries could have | |
18764 | relocations against symbols in their debug information - the | |
18765 | minimal symbol would have the right address, but the debug info | |
18766 | would not. It's no longer necessary, because we will explicitly | |
18767 | apply relocations when we read in the debug information now. */ | |
18768 | ||
18769 | /* A DW_AT_location attribute with no contents indicates that a | |
18770 | variable has been optimized away. */ | |
18771 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
18772 | { | |
f1e6e072 | 18773 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
18774 | return; |
18775 | } | |
18776 | ||
18777 | /* Handle one degenerate form of location expression specially, to | |
18778 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
18779 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
18780 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
18781 | |
18782 | if (attr_form_is_block (attr) | |
3019eac3 DE |
18783 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
18784 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
18785 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
18786 | && (DW_BLOCK (attr)->size | |
18787 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 18788 | { |
891d2f0b | 18789 | unsigned int dummy; |
4c2df51b | 18790 | |
3019eac3 DE |
18791 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
18792 | SYMBOL_VALUE_ADDRESS (sym) = | |
18793 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
18794 | else | |
18795 | SYMBOL_VALUE_ADDRESS (sym) = | |
18796 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 18797 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
18798 | fixup_symbol_section (sym, objfile); |
18799 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
18800 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
18801 | return; |
18802 | } | |
18803 | ||
18804 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
18805 | expression evaluator, and use LOC_COMPUTED only when necessary | |
18806 | (i.e. when the value of a register or memory location is | |
18807 | referenced, or a thread-local block, etc.). Then again, it might | |
18808 | not be worthwhile. I'm assuming that it isn't unless performance | |
18809 | or memory numbers show me otherwise. */ | |
18810 | ||
f1e6e072 | 18811 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 18812 | |
f1e6e072 | 18813 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 18814 | cu->has_loclist = 1; |
4c2df51b DJ |
18815 | } |
18816 | ||
c906108c SS |
18817 | /* Given a pointer to a DWARF information entry, figure out if we need |
18818 | to make a symbol table entry for it, and if so, create a new entry | |
18819 | and return a pointer to it. | |
18820 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
18821 | used the passed type. |
18822 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
18823 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
18824 | |
18825 | static struct symbol * | |
34eaf542 TT |
18826 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
18827 | struct symbol *space) | |
c906108c | 18828 | { |
e7c27a73 | 18829 | struct objfile *objfile = cu->objfile; |
3e29f34a | 18830 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 18831 | struct symbol *sym = NULL; |
15d034d0 | 18832 | const char *name; |
c906108c SS |
18833 | struct attribute *attr = NULL; |
18834 | struct attribute *attr2 = NULL; | |
e142c38c | 18835 | CORE_ADDR baseaddr; |
e37fd15a SW |
18836 | struct pending **list_to_add = NULL; |
18837 | ||
edb3359d | 18838 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
18839 | |
18840 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 18841 | |
94af9270 | 18842 | name = dwarf2_name (die, cu); |
c906108c SS |
18843 | if (name) |
18844 | { | |
94af9270 | 18845 | const char *linkagename; |
34eaf542 | 18846 | int suppress_add = 0; |
94af9270 | 18847 | |
34eaf542 TT |
18848 | if (space) |
18849 | sym = space; | |
18850 | else | |
e623cf5d | 18851 | sym = allocate_symbol (objfile); |
c906108c | 18852 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
18853 | |
18854 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 18855 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
18856 | linkagename = dwarf2_physname (name, die, cu); |
18857 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 18858 | |
f55ee35c JK |
18859 | /* Fortran does not have mangling standard and the mangling does differ |
18860 | between gfortran, iFort etc. */ | |
18861 | if (cu->language == language_fortran | |
b250c185 | 18862 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 18863 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 18864 | dwarf2_full_name (name, die, cu), |
29df156d | 18865 | NULL); |
f55ee35c | 18866 | |
c906108c | 18867 | /* Default assumptions. |
c5aa993b | 18868 | Use the passed type or decode it from the die. */ |
176620f1 | 18869 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 18870 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
18871 | if (type != NULL) |
18872 | SYMBOL_TYPE (sym) = type; | |
18873 | else | |
e7c27a73 | 18874 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
18875 | attr = dwarf2_attr (die, |
18876 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
18877 | cu); | |
c906108c SS |
18878 | if (attr) |
18879 | { | |
18880 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
18881 | } | |
cb1df416 | 18882 | |
edb3359d DJ |
18883 | attr = dwarf2_attr (die, |
18884 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
18885 | cu); | |
cb1df416 DJ |
18886 | if (attr) |
18887 | { | |
18888 | int file_index = DW_UNSND (attr); | |
9a619af0 | 18889 | |
cb1df416 DJ |
18890 | if (cu->line_header == NULL |
18891 | || file_index > cu->line_header->num_file_names) | |
18892 | complaint (&symfile_complaints, | |
18893 | _("file index out of range")); | |
1c3d648d | 18894 | else if (file_index > 0) |
cb1df416 DJ |
18895 | { |
18896 | struct file_entry *fe; | |
9a619af0 | 18897 | |
cb1df416 | 18898 | fe = &cu->line_header->file_names[file_index - 1]; |
08be3fe3 | 18899 | symbol_set_symtab (sym, fe->symtab); |
cb1df416 DJ |
18900 | } |
18901 | } | |
18902 | ||
c906108c SS |
18903 | switch (die->tag) |
18904 | { | |
18905 | case DW_TAG_label: | |
e142c38c | 18906 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 18907 | if (attr) |
3e29f34a MR |
18908 | { |
18909 | CORE_ADDR addr; | |
18910 | ||
18911 | addr = attr_value_as_address (attr); | |
18912 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
18913 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
18914 | } | |
0f5238ed TT |
18915 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
18916 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 18917 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 18918 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
18919 | break; |
18920 | case DW_TAG_subprogram: | |
18921 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18922 | finish_block. */ | |
f1e6e072 | 18923 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 18924 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
18925 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
18926 | || cu->language == language_ada) | |
c906108c | 18927 | { |
2cfa0c8d JB |
18928 | /* Subprograms marked external are stored as a global symbol. |
18929 | Ada subprograms, whether marked external or not, are always | |
18930 | stored as a global symbol, because we want to be able to | |
18931 | access them globally. For instance, we want to be able | |
18932 | to break on a nested subprogram without having to | |
18933 | specify the context. */ | |
e37fd15a | 18934 | list_to_add = &global_symbols; |
c906108c SS |
18935 | } |
18936 | else | |
18937 | { | |
e37fd15a | 18938 | list_to_add = cu->list_in_scope; |
c906108c SS |
18939 | } |
18940 | break; | |
edb3359d DJ |
18941 | case DW_TAG_inlined_subroutine: |
18942 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18943 | finish_block. */ | |
f1e6e072 | 18944 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 18945 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 18946 | list_to_add = cu->list_in_scope; |
edb3359d | 18947 | break; |
34eaf542 TT |
18948 | case DW_TAG_template_value_param: |
18949 | suppress_add = 1; | |
18950 | /* Fall through. */ | |
72929c62 | 18951 | case DW_TAG_constant: |
c906108c | 18952 | case DW_TAG_variable: |
254e6b9e | 18953 | case DW_TAG_member: |
0963b4bd MS |
18954 | /* Compilation with minimal debug info may result in |
18955 | variables with missing type entries. Change the | |
18956 | misleading `void' type to something sensible. */ | |
c906108c | 18957 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 18958 | SYMBOL_TYPE (sym) |
46bf5051 | 18959 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 18960 | |
e142c38c | 18961 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
18962 | /* In the case of DW_TAG_member, we should only be called for |
18963 | static const members. */ | |
18964 | if (die->tag == DW_TAG_member) | |
18965 | { | |
3863f96c DE |
18966 | /* dwarf2_add_field uses die_is_declaration, |
18967 | so we do the same. */ | |
254e6b9e DE |
18968 | gdb_assert (die_is_declaration (die, cu)); |
18969 | gdb_assert (attr); | |
18970 | } | |
c906108c SS |
18971 | if (attr) |
18972 | { | |
e7c27a73 | 18973 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 18974 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 18975 | if (!suppress_add) |
34eaf542 TT |
18976 | { |
18977 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 18978 | list_to_add = &global_symbols; |
34eaf542 | 18979 | else |
e37fd15a | 18980 | list_to_add = cu->list_in_scope; |
34eaf542 | 18981 | } |
c906108c SS |
18982 | break; |
18983 | } | |
e142c38c | 18984 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
18985 | if (attr) |
18986 | { | |
e7c27a73 | 18987 | var_decode_location (attr, sym, cu); |
e142c38c | 18988 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
18989 | |
18990 | /* Fortran explicitly imports any global symbols to the local | |
18991 | scope by DW_TAG_common_block. */ | |
18992 | if (cu->language == language_fortran && die->parent | |
18993 | && die->parent->tag == DW_TAG_common_block) | |
18994 | attr2 = NULL; | |
18995 | ||
caac4577 JG |
18996 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
18997 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
18998 | && !dwarf2_per_objfile->has_section_at_zero) | |
18999 | { | |
19000 | /* When a static variable is eliminated by the linker, | |
19001 | the corresponding debug information is not stripped | |
19002 | out, but the variable address is set to null; | |
19003 | do not add such variables into symbol table. */ | |
19004 | } | |
19005 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 19006 | { |
f55ee35c JK |
19007 | /* Workaround gfortran PR debug/40040 - it uses |
19008 | DW_AT_location for variables in -fPIC libraries which may | |
19009 | get overriden by other libraries/executable and get | |
19010 | a different address. Resolve it by the minimal symbol | |
19011 | which may come from inferior's executable using copy | |
19012 | relocation. Make this workaround only for gfortran as for | |
19013 | other compilers GDB cannot guess the minimal symbol | |
19014 | Fortran mangling kind. */ | |
19015 | if (cu->language == language_fortran && die->parent | |
19016 | && die->parent->tag == DW_TAG_module | |
19017 | && cu->producer | |
28586665 | 19018 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 19019 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 19020 | |
1c809c68 TT |
19021 | /* A variable with DW_AT_external is never static, |
19022 | but it may be block-scoped. */ | |
19023 | list_to_add = (cu->list_in_scope == &file_symbols | |
19024 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 19025 | } |
c906108c | 19026 | else |
e37fd15a | 19027 | list_to_add = cu->list_in_scope; |
c906108c SS |
19028 | } |
19029 | else | |
19030 | { | |
19031 | /* We do not know the address of this symbol. | |
c5aa993b JM |
19032 | If it is an external symbol and we have type information |
19033 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
19034 | The address of the variable will then be determined from | |
19035 | the minimal symbol table whenever the variable is | |
19036 | referenced. */ | |
e142c38c | 19037 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
19038 | |
19039 | /* Fortran explicitly imports any global symbols to the local | |
19040 | scope by DW_TAG_common_block. */ | |
19041 | if (cu->language == language_fortran && die->parent | |
19042 | && die->parent->tag == DW_TAG_common_block) | |
19043 | { | |
19044 | /* SYMBOL_CLASS doesn't matter here because | |
19045 | read_common_block is going to reset it. */ | |
19046 | if (!suppress_add) | |
19047 | list_to_add = cu->list_in_scope; | |
19048 | } | |
19049 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
19050 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 19051 | { |
0fe7935b DJ |
19052 | /* A variable with DW_AT_external is never static, but it |
19053 | may be block-scoped. */ | |
19054 | list_to_add = (cu->list_in_scope == &file_symbols | |
19055 | ? &global_symbols : cu->list_in_scope); | |
19056 | ||
f1e6e072 | 19057 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 19058 | } |
442ddf59 JK |
19059 | else if (!die_is_declaration (die, cu)) |
19060 | { | |
19061 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
19062 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
19063 | if (!suppress_add) |
19064 | list_to_add = cu->list_in_scope; | |
442ddf59 | 19065 | } |
c906108c SS |
19066 | } |
19067 | break; | |
19068 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
19069 | /* If we are inside a function, mark this as an argument. If |
19070 | not, we might be looking at an argument to an inlined function | |
19071 | when we do not have enough information to show inlined frames; | |
19072 | pretend it's a local variable in that case so that the user can | |
19073 | still see it. */ | |
19074 | if (context_stack_depth > 0 | |
19075 | && context_stack[context_stack_depth - 1].name != NULL) | |
19076 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 19077 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
19078 | if (attr) |
19079 | { | |
e7c27a73 | 19080 | var_decode_location (attr, sym, cu); |
c906108c | 19081 | } |
e142c38c | 19082 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
19083 | if (attr) |
19084 | { | |
e7c27a73 | 19085 | dwarf2_const_value (attr, sym, cu); |
c906108c | 19086 | } |
f346a30d | 19087 | |
e37fd15a | 19088 | list_to_add = cu->list_in_scope; |
c906108c SS |
19089 | break; |
19090 | case DW_TAG_unspecified_parameters: | |
19091 | /* From varargs functions; gdb doesn't seem to have any | |
19092 | interest in this information, so just ignore it for now. | |
19093 | (FIXME?) */ | |
19094 | break; | |
34eaf542 TT |
19095 | case DW_TAG_template_type_param: |
19096 | suppress_add = 1; | |
19097 | /* Fall through. */ | |
c906108c | 19098 | case DW_TAG_class_type: |
680b30c7 | 19099 | case DW_TAG_interface_type: |
c906108c SS |
19100 | case DW_TAG_structure_type: |
19101 | case DW_TAG_union_type: | |
72019c9c | 19102 | case DW_TAG_set_type: |
c906108c | 19103 | case DW_TAG_enumeration_type: |
f1e6e072 | 19104 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 19105 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 19106 | |
63d06c5c | 19107 | { |
9c37b5ae | 19108 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
19109 | really ever be static objects: otherwise, if you try |
19110 | to, say, break of a class's method and you're in a file | |
19111 | which doesn't mention that class, it won't work unless | |
19112 | the check for all static symbols in lookup_symbol_aux | |
19113 | saves you. See the OtherFileClass tests in | |
19114 | gdb.c++/namespace.exp. */ | |
19115 | ||
e37fd15a | 19116 | if (!suppress_add) |
34eaf542 | 19117 | { |
34eaf542 | 19118 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 19119 | && cu->language == language_cplus |
34eaf542 | 19120 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 19121 | |
64382290 | 19122 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 19123 | ... }" also defines a typedef for "foo". */ |
64382290 | 19124 | if (cu->language == language_cplus |
45280282 | 19125 | || cu->language == language_ada |
c44af4eb TT |
19126 | || cu->language == language_d |
19127 | || cu->language == language_rust) | |
64382290 TT |
19128 | { |
19129 | /* The symbol's name is already allocated along | |
19130 | with this objfile, so we don't need to | |
19131 | duplicate it for the type. */ | |
19132 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
19133 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
19134 | } | |
63d06c5c DC |
19135 | } |
19136 | } | |
c906108c SS |
19137 | break; |
19138 | case DW_TAG_typedef: | |
f1e6e072 | 19139 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 19140 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 19141 | list_to_add = cu->list_in_scope; |
63d06c5c | 19142 | break; |
c906108c | 19143 | case DW_TAG_base_type: |
a02abb62 | 19144 | case DW_TAG_subrange_type: |
f1e6e072 | 19145 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 19146 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 19147 | list_to_add = cu->list_in_scope; |
c906108c SS |
19148 | break; |
19149 | case DW_TAG_enumerator: | |
e142c38c | 19150 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
19151 | if (attr) |
19152 | { | |
e7c27a73 | 19153 | dwarf2_const_value (attr, sym, cu); |
c906108c | 19154 | } |
63d06c5c DC |
19155 | { |
19156 | /* NOTE: carlton/2003-11-10: See comment above in the | |
19157 | DW_TAG_class_type, etc. block. */ | |
19158 | ||
e142c38c | 19159 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 19160 | && cu->language == language_cplus |
e142c38c | 19161 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 19162 | } |
c906108c | 19163 | break; |
74921315 | 19164 | case DW_TAG_imported_declaration: |
5c4e30ca | 19165 | case DW_TAG_namespace: |
f1e6e072 | 19166 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 19167 | list_to_add = &global_symbols; |
5c4e30ca | 19168 | break; |
530e8392 KB |
19169 | case DW_TAG_module: |
19170 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
19171 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
19172 | list_to_add = &global_symbols; | |
19173 | break; | |
4357ac6c | 19174 | case DW_TAG_common_block: |
f1e6e072 | 19175 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
19176 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
19177 | add_symbol_to_list (sym, cu->list_in_scope); | |
19178 | break; | |
c906108c SS |
19179 | default: |
19180 | /* Not a tag we recognize. Hopefully we aren't processing | |
19181 | trash data, but since we must specifically ignore things | |
19182 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 19183 | this point. */ |
e2e0b3e5 | 19184 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 19185 | dwarf_tag_name (die->tag)); |
c906108c SS |
19186 | break; |
19187 | } | |
df8a16a1 | 19188 | |
e37fd15a SW |
19189 | if (suppress_add) |
19190 | { | |
19191 | sym->hash_next = objfile->template_symbols; | |
19192 | objfile->template_symbols = sym; | |
19193 | list_to_add = NULL; | |
19194 | } | |
19195 | ||
19196 | if (list_to_add != NULL) | |
19197 | add_symbol_to_list (sym, list_to_add); | |
19198 | ||
df8a16a1 DJ |
19199 | /* For the benefit of old versions of GCC, check for anonymous |
19200 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 19201 | if (!cu->processing_has_namespace_info |
94af9270 | 19202 | && cu->language == language_cplus) |
a10964d1 | 19203 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
19204 | } |
19205 | return (sym); | |
19206 | } | |
19207 | ||
34eaf542 TT |
19208 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
19209 | ||
19210 | static struct symbol * | |
19211 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
19212 | { | |
19213 | return new_symbol_full (die, type, cu, NULL); | |
19214 | } | |
19215 | ||
98bfdba5 PA |
19216 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
19217 | zero-extend it as appropriate for the symbol's type. The DWARF | |
19218 | standard (v4) is not entirely clear about the meaning of using | |
19219 | DW_FORM_dataN for a constant with a signed type, where the type is | |
19220 | wider than the data. The conclusion of a discussion on the DWARF | |
19221 | list was that this is unspecified. We choose to always zero-extend | |
19222 | because that is the interpretation long in use by GCC. */ | |
c906108c | 19223 | |
98bfdba5 | 19224 | static gdb_byte * |
ff39bb5e | 19225 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 19226 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 19227 | { |
e7c27a73 | 19228 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
19229 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
19230 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
19231 | LONGEST l = DW_UNSND (attr); |
19232 | ||
19233 | if (bits < sizeof (*value) * 8) | |
19234 | { | |
19235 | l &= ((LONGEST) 1 << bits) - 1; | |
19236 | *value = l; | |
19237 | } | |
19238 | else if (bits == sizeof (*value) * 8) | |
19239 | *value = l; | |
19240 | else | |
19241 | { | |
224c3ddb | 19242 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
19243 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
19244 | return bytes; | |
19245 | } | |
19246 | ||
19247 | return NULL; | |
19248 | } | |
19249 | ||
19250 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
19251 | the value does not fit in *VALUE, set *BYTES - either already | |
19252 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
19253 | or, set *BATON, if we translated the constant to a location | |
19254 | expression. */ | |
19255 | ||
19256 | static void | |
ff39bb5e | 19257 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
19258 | const char *name, struct obstack *obstack, |
19259 | struct dwarf2_cu *cu, | |
d521ce57 | 19260 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
19261 | struct dwarf2_locexpr_baton **baton) |
19262 | { | |
19263 | struct objfile *objfile = cu->objfile; | |
19264 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 19265 | struct dwarf_block *blk; |
98bfdba5 PA |
19266 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
19267 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
19268 | ||
19269 | *value = 0; | |
19270 | *bytes = NULL; | |
19271 | *baton = NULL; | |
c906108c SS |
19272 | |
19273 | switch (attr->form) | |
19274 | { | |
19275 | case DW_FORM_addr: | |
3019eac3 | 19276 | case DW_FORM_GNU_addr_index: |
ac56253d | 19277 | { |
ac56253d TT |
19278 | gdb_byte *data; |
19279 | ||
98bfdba5 PA |
19280 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
19281 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 19282 | cu_header->addr_size, |
98bfdba5 | 19283 | TYPE_LENGTH (type)); |
ac56253d TT |
19284 | /* Symbols of this form are reasonably rare, so we just |
19285 | piggyback on the existing location code rather than writing | |
19286 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 19287 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
19288 | (*baton)->per_cu = cu->per_cu; |
19289 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 19290 | |
98bfdba5 | 19291 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 19292 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 19293 | (*baton)->data = data; |
ac56253d TT |
19294 | |
19295 | data[0] = DW_OP_addr; | |
19296 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
19297 | byte_order, DW_ADDR (attr)); | |
19298 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 19299 | } |
c906108c | 19300 | break; |
4ac36638 | 19301 | case DW_FORM_string: |
93b5768b | 19302 | case DW_FORM_strp: |
3019eac3 | 19303 | case DW_FORM_GNU_str_index: |
36586728 | 19304 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
19305 | /* DW_STRING is already allocated on the objfile obstack, point |
19306 | directly to it. */ | |
d521ce57 | 19307 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 19308 | break; |
c906108c SS |
19309 | case DW_FORM_block1: |
19310 | case DW_FORM_block2: | |
19311 | case DW_FORM_block4: | |
19312 | case DW_FORM_block: | |
2dc7f7b3 | 19313 | case DW_FORM_exprloc: |
0224619f | 19314 | case DW_FORM_data16: |
c906108c | 19315 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
19316 | if (TYPE_LENGTH (type) != blk->size) |
19317 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
19318 | TYPE_LENGTH (type)); | |
19319 | *bytes = blk->data; | |
c906108c | 19320 | break; |
2df3850c JM |
19321 | |
19322 | /* The DW_AT_const_value attributes are supposed to carry the | |
19323 | symbol's value "represented as it would be on the target | |
19324 | architecture." By the time we get here, it's already been | |
19325 | converted to host endianness, so we just need to sign- or | |
19326 | zero-extend it as appropriate. */ | |
19327 | case DW_FORM_data1: | |
3aef2284 | 19328 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 19329 | break; |
c906108c | 19330 | case DW_FORM_data2: |
3aef2284 | 19331 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 19332 | break; |
c906108c | 19333 | case DW_FORM_data4: |
3aef2284 | 19334 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 19335 | break; |
c906108c | 19336 | case DW_FORM_data8: |
3aef2284 | 19337 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
19338 | break; |
19339 | ||
c906108c | 19340 | case DW_FORM_sdata: |
98bfdba5 | 19341 | *value = DW_SND (attr); |
2df3850c JM |
19342 | break; |
19343 | ||
c906108c | 19344 | case DW_FORM_udata: |
98bfdba5 | 19345 | *value = DW_UNSND (attr); |
c906108c | 19346 | break; |
2df3850c | 19347 | |
c906108c | 19348 | default: |
4d3c2250 | 19349 | complaint (&symfile_complaints, |
e2e0b3e5 | 19350 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 19351 | dwarf_form_name (attr->form)); |
98bfdba5 | 19352 | *value = 0; |
c906108c SS |
19353 | break; |
19354 | } | |
19355 | } | |
19356 | ||
2df3850c | 19357 | |
98bfdba5 PA |
19358 | /* Copy constant value from an attribute to a symbol. */ |
19359 | ||
2df3850c | 19360 | static void |
ff39bb5e | 19361 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 19362 | struct dwarf2_cu *cu) |
2df3850c | 19363 | { |
98bfdba5 | 19364 | struct objfile *objfile = cu->objfile; |
12df843f | 19365 | LONGEST value; |
d521ce57 | 19366 | const gdb_byte *bytes; |
98bfdba5 | 19367 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 19368 | |
98bfdba5 PA |
19369 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
19370 | SYMBOL_PRINT_NAME (sym), | |
19371 | &objfile->objfile_obstack, cu, | |
19372 | &value, &bytes, &baton); | |
2df3850c | 19373 | |
98bfdba5 PA |
19374 | if (baton != NULL) |
19375 | { | |
98bfdba5 | 19376 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 19377 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
19378 | } |
19379 | else if (bytes != NULL) | |
19380 | { | |
19381 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 19382 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
19383 | } |
19384 | else | |
19385 | { | |
19386 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 19387 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 19388 | } |
2df3850c JM |
19389 | } |
19390 | ||
c906108c SS |
19391 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
19392 | ||
19393 | static struct type * | |
e7c27a73 | 19394 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19395 | { |
c906108c | 19396 | struct attribute *type_attr; |
c906108c | 19397 | |
e142c38c | 19398 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
19399 | if (!type_attr) |
19400 | { | |
19401 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 19402 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 19403 | } |
348e048f | 19404 | |
673bfd45 | 19405 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
19406 | } |
19407 | ||
b4ba55a1 JB |
19408 | /* True iff CU's producer generates GNAT Ada auxiliary information |
19409 | that allows to find parallel types through that information instead | |
19410 | of having to do expensive parallel lookups by type name. */ | |
19411 | ||
19412 | static int | |
19413 | need_gnat_info (struct dwarf2_cu *cu) | |
19414 | { | |
19415 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
19416 | of GNAT produces this auxiliary information, without any indication | |
19417 | that it is produced. Part of enhancing the FSF version of GNAT | |
19418 | to produce that information will be to put in place an indicator | |
19419 | that we can use in order to determine whether the descriptive type | |
19420 | info is available or not. One suggestion that has been made is | |
19421 | to use a new attribute, attached to the CU die. For now, assume | |
19422 | that the descriptive type info is not available. */ | |
19423 | return 0; | |
19424 | } | |
19425 | ||
b4ba55a1 JB |
19426 | /* Return the auxiliary type of the die in question using its |
19427 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
19428 | attribute is not present. */ | |
19429 | ||
19430 | static struct type * | |
19431 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
19432 | { | |
b4ba55a1 | 19433 | struct attribute *type_attr; |
b4ba55a1 JB |
19434 | |
19435 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
19436 | if (!type_attr) | |
19437 | return NULL; | |
19438 | ||
673bfd45 | 19439 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
19440 | } |
19441 | ||
19442 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
19443 | descriptive type accordingly. */ | |
19444 | ||
19445 | static void | |
19446 | set_descriptive_type (struct type *type, struct die_info *die, | |
19447 | struct dwarf2_cu *cu) | |
19448 | { | |
19449 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
19450 | ||
19451 | if (descriptive_type) | |
19452 | { | |
19453 | ALLOCATE_GNAT_AUX_TYPE (type); | |
19454 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
19455 | } | |
19456 | } | |
19457 | ||
c906108c SS |
19458 | /* Return the containing type of the die in question using its |
19459 | DW_AT_containing_type attribute. */ | |
19460 | ||
19461 | static struct type * | |
e7c27a73 | 19462 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19463 | { |
c906108c | 19464 | struct attribute *type_attr; |
c906108c | 19465 | |
e142c38c | 19466 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
19467 | if (!type_attr) |
19468 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 19469 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 19470 | |
673bfd45 | 19471 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
19472 | } |
19473 | ||
ac9ec31b DE |
19474 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
19475 | ||
19476 | static struct type * | |
19477 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
19478 | { | |
19479 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19480 | char *message, *saved; | |
19481 | ||
19482 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 19483 | objfile_name (objfile), |
ac9ec31b DE |
19484 | cu->header.offset.sect_off, |
19485 | die->offset.sect_off); | |
224c3ddb SM |
19486 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
19487 | message, strlen (message)); | |
ac9ec31b DE |
19488 | xfree (message); |
19489 | ||
19f392bc | 19490 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
19491 | } |
19492 | ||
673bfd45 | 19493 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
19494 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
19495 | DW_AT_containing_type. | |
673bfd45 DE |
19496 | If there is no type substitute an error marker. */ |
19497 | ||
c906108c | 19498 | static struct type * |
ff39bb5e | 19499 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 19500 | struct dwarf2_cu *cu) |
c906108c | 19501 | { |
bb5ed363 | 19502 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
19503 | struct type *this_type; |
19504 | ||
ac9ec31b DE |
19505 | gdb_assert (attr->name == DW_AT_type |
19506 | || attr->name == DW_AT_GNAT_descriptive_type | |
19507 | || attr->name == DW_AT_containing_type); | |
19508 | ||
673bfd45 DE |
19509 | /* First see if we have it cached. */ |
19510 | ||
36586728 TT |
19511 | if (attr->form == DW_FORM_GNU_ref_alt) |
19512 | { | |
19513 | struct dwarf2_per_cu_data *per_cu; | |
19514 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
19515 | ||
19516 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
19517 | this_type = get_die_type_at_offset (offset, per_cu); | |
19518 | } | |
7771576e | 19519 | else if (attr_form_is_ref (attr)) |
673bfd45 | 19520 | { |
b64f50a1 | 19521 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
19522 | |
19523 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
19524 | } | |
55f1336d | 19525 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 19526 | { |
ac9ec31b | 19527 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 19528 | |
ac9ec31b | 19529 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
19530 | } |
19531 | else | |
19532 | { | |
ac9ec31b DE |
19533 | complaint (&symfile_complaints, |
19534 | _("Dwarf Error: Bad type attribute %s in DIE" | |
19535 | " at 0x%x [in module %s]"), | |
19536 | dwarf_attr_name (attr->name), die->offset.sect_off, | |
4262abfb | 19537 | objfile_name (objfile)); |
ac9ec31b | 19538 | return build_error_marker_type (cu, die); |
673bfd45 DE |
19539 | } |
19540 | ||
19541 | /* If not cached we need to read it in. */ | |
19542 | ||
19543 | if (this_type == NULL) | |
19544 | { | |
ac9ec31b | 19545 | struct die_info *type_die = NULL; |
673bfd45 DE |
19546 | struct dwarf2_cu *type_cu = cu; |
19547 | ||
7771576e | 19548 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
19549 | type_die = follow_die_ref (die, attr, &type_cu); |
19550 | if (type_die == NULL) | |
19551 | return build_error_marker_type (cu, die); | |
19552 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
19553 | from an inter-CU reference and the type's CU got expanded before |
19554 | ours. */ | |
ac9ec31b | 19555 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
19556 | } |
19557 | ||
19558 | /* If we still don't have a type use an error marker. */ | |
19559 | ||
19560 | if (this_type == NULL) | |
ac9ec31b | 19561 | return build_error_marker_type (cu, die); |
673bfd45 | 19562 | |
f792889a | 19563 | return this_type; |
c906108c SS |
19564 | } |
19565 | ||
673bfd45 DE |
19566 | /* Return the type in DIE, CU. |
19567 | Returns NULL for invalid types. | |
19568 | ||
02142a6c | 19569 | This first does a lookup in die_type_hash, |
673bfd45 DE |
19570 | and only reads the die in if necessary. |
19571 | ||
19572 | NOTE: This can be called when reading in partial or full symbols. */ | |
19573 | ||
f792889a | 19574 | static struct type * |
e7c27a73 | 19575 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19576 | { |
f792889a DJ |
19577 | struct type *this_type; |
19578 | ||
19579 | this_type = get_die_type (die, cu); | |
19580 | if (this_type) | |
19581 | return this_type; | |
19582 | ||
673bfd45 DE |
19583 | return read_type_die_1 (die, cu); |
19584 | } | |
19585 | ||
19586 | /* Read the type in DIE, CU. | |
19587 | Returns NULL for invalid types. */ | |
19588 | ||
19589 | static struct type * | |
19590 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
19591 | { | |
19592 | struct type *this_type = NULL; | |
19593 | ||
c906108c SS |
19594 | switch (die->tag) |
19595 | { | |
19596 | case DW_TAG_class_type: | |
680b30c7 | 19597 | case DW_TAG_interface_type: |
c906108c SS |
19598 | case DW_TAG_structure_type: |
19599 | case DW_TAG_union_type: | |
f792889a | 19600 | this_type = read_structure_type (die, cu); |
c906108c SS |
19601 | break; |
19602 | case DW_TAG_enumeration_type: | |
f792889a | 19603 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
19604 | break; |
19605 | case DW_TAG_subprogram: | |
19606 | case DW_TAG_subroutine_type: | |
edb3359d | 19607 | case DW_TAG_inlined_subroutine: |
f792889a | 19608 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
19609 | break; |
19610 | case DW_TAG_array_type: | |
f792889a | 19611 | this_type = read_array_type (die, cu); |
c906108c | 19612 | break; |
72019c9c | 19613 | case DW_TAG_set_type: |
f792889a | 19614 | this_type = read_set_type (die, cu); |
72019c9c | 19615 | break; |
c906108c | 19616 | case DW_TAG_pointer_type: |
f792889a | 19617 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
19618 | break; |
19619 | case DW_TAG_ptr_to_member_type: | |
f792889a | 19620 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
19621 | break; |
19622 | case DW_TAG_reference_type: | |
f792889a | 19623 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
19624 | break; |
19625 | case DW_TAG_const_type: | |
f792889a | 19626 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
19627 | break; |
19628 | case DW_TAG_volatile_type: | |
f792889a | 19629 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 19630 | break; |
06d66ee9 TT |
19631 | case DW_TAG_restrict_type: |
19632 | this_type = read_tag_restrict_type (die, cu); | |
19633 | break; | |
c906108c | 19634 | case DW_TAG_string_type: |
f792889a | 19635 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
19636 | break; |
19637 | case DW_TAG_typedef: | |
f792889a | 19638 | this_type = read_typedef (die, cu); |
c906108c | 19639 | break; |
a02abb62 | 19640 | case DW_TAG_subrange_type: |
f792889a | 19641 | this_type = read_subrange_type (die, cu); |
a02abb62 | 19642 | break; |
c906108c | 19643 | case DW_TAG_base_type: |
f792889a | 19644 | this_type = read_base_type (die, cu); |
c906108c | 19645 | break; |
81a17f79 | 19646 | case DW_TAG_unspecified_type: |
f792889a | 19647 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 19648 | break; |
0114d602 DJ |
19649 | case DW_TAG_namespace: |
19650 | this_type = read_namespace_type (die, cu); | |
19651 | break; | |
f55ee35c JK |
19652 | case DW_TAG_module: |
19653 | this_type = read_module_type (die, cu); | |
19654 | break; | |
a2c2acaf MW |
19655 | case DW_TAG_atomic_type: |
19656 | this_type = read_tag_atomic_type (die, cu); | |
19657 | break; | |
c906108c | 19658 | default: |
3e43a32a MS |
19659 | complaint (&symfile_complaints, |
19660 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 19661 | dwarf_tag_name (die->tag)); |
c906108c SS |
19662 | break; |
19663 | } | |
63d06c5c | 19664 | |
f792889a | 19665 | return this_type; |
63d06c5c DC |
19666 | } |
19667 | ||
abc72ce4 DE |
19668 | /* See if we can figure out if the class lives in a namespace. We do |
19669 | this by looking for a member function; its demangled name will | |
19670 | contain namespace info, if there is any. | |
19671 | Return the computed name or NULL. | |
19672 | Space for the result is allocated on the objfile's obstack. | |
19673 | This is the full-die version of guess_partial_die_structure_name. | |
19674 | In this case we know DIE has no useful parent. */ | |
19675 | ||
19676 | static char * | |
19677 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
19678 | { | |
19679 | struct die_info *spec_die; | |
19680 | struct dwarf2_cu *spec_cu; | |
19681 | struct die_info *child; | |
19682 | ||
19683 | spec_cu = cu; | |
19684 | spec_die = die_specification (die, &spec_cu); | |
19685 | if (spec_die != NULL) | |
19686 | { | |
19687 | die = spec_die; | |
19688 | cu = spec_cu; | |
19689 | } | |
19690 | ||
19691 | for (child = die->child; | |
19692 | child != NULL; | |
19693 | child = child->sibling) | |
19694 | { | |
19695 | if (child->tag == DW_TAG_subprogram) | |
19696 | { | |
7d45c7c3 | 19697 | const char *linkage_name; |
abc72ce4 | 19698 | |
7d45c7c3 KB |
19699 | linkage_name = dwarf2_string_attr (child, DW_AT_linkage_name, cu); |
19700 | if (linkage_name == NULL) | |
19701 | linkage_name = dwarf2_string_attr (child, DW_AT_MIPS_linkage_name, | |
19702 | cu); | |
19703 | if (linkage_name != NULL) | |
abc72ce4 DE |
19704 | { |
19705 | char *actual_name | |
19706 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 19707 | linkage_name); |
abc72ce4 DE |
19708 | char *name = NULL; |
19709 | ||
19710 | if (actual_name != NULL) | |
19711 | { | |
15d034d0 | 19712 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
19713 | |
19714 | if (die_name != NULL | |
19715 | && strcmp (die_name, actual_name) != 0) | |
19716 | { | |
19717 | /* Strip off the class name from the full name. | |
19718 | We want the prefix. */ | |
19719 | int die_name_len = strlen (die_name); | |
19720 | int actual_name_len = strlen (actual_name); | |
19721 | ||
19722 | /* Test for '::' as a sanity check. */ | |
19723 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
19724 | && actual_name[actual_name_len |
19725 | - die_name_len - 1] == ':') | |
224c3ddb SM |
19726 | name = (char *) obstack_copy0 ( |
19727 | &cu->objfile->per_bfd->storage_obstack, | |
19728 | actual_name, actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
19729 | } |
19730 | } | |
19731 | xfree (actual_name); | |
19732 | return name; | |
19733 | } | |
19734 | } | |
19735 | } | |
19736 | ||
19737 | return NULL; | |
19738 | } | |
19739 | ||
96408a79 SA |
19740 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
19741 | prefix part in such case. See | |
19742 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
19743 | ||
19744 | static char * | |
19745 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
19746 | { | |
19747 | struct attribute *attr; | |
e6a959d6 | 19748 | const char *base; |
96408a79 SA |
19749 | |
19750 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
19751 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
19752 | return NULL; | |
19753 | ||
7d45c7c3 | 19754 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
19755 | return NULL; |
19756 | ||
19757 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
19758 | if (attr == NULL) | |
19759 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
19760 | if (attr == NULL || DW_STRING (attr) == NULL) | |
19761 | return NULL; | |
19762 | ||
19763 | /* dwarf2_name had to be already called. */ | |
19764 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
19765 | ||
19766 | /* Strip the base name, keep any leading namespaces/classes. */ | |
19767 | base = strrchr (DW_STRING (attr), ':'); | |
19768 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
19769 | return ""; | |
19770 | ||
224c3ddb SM |
19771 | return (char *) obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
19772 | DW_STRING (attr), | |
19773 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
19774 | } |
19775 | ||
fdde2d81 | 19776 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 19777 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 19778 | |
0114d602 DJ |
19779 | For example, if we're within the method foo() in the following |
19780 | code: | |
19781 | ||
19782 | namespace N { | |
19783 | class C { | |
19784 | void foo () { | |
19785 | } | |
19786 | }; | |
19787 | } | |
19788 | ||
19789 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 19790 | |
0d5cff50 | 19791 | static const char * |
e142c38c | 19792 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 19793 | { |
0114d602 DJ |
19794 | struct die_info *parent, *spec_die; |
19795 | struct dwarf2_cu *spec_cu; | |
19796 | struct type *parent_type; | |
96408a79 | 19797 | char *retval; |
63d06c5c | 19798 | |
9c37b5ae | 19799 | if (cu->language != language_cplus |
c44af4eb TT |
19800 | && cu->language != language_fortran && cu->language != language_d |
19801 | && cu->language != language_rust) | |
0114d602 DJ |
19802 | return ""; |
19803 | ||
96408a79 SA |
19804 | retval = anonymous_struct_prefix (die, cu); |
19805 | if (retval) | |
19806 | return retval; | |
19807 | ||
0114d602 DJ |
19808 | /* We have to be careful in the presence of DW_AT_specification. |
19809 | For example, with GCC 3.4, given the code | |
19810 | ||
19811 | namespace N { | |
19812 | void foo() { | |
19813 | // Definition of N::foo. | |
19814 | } | |
19815 | } | |
19816 | ||
19817 | then we'll have a tree of DIEs like this: | |
19818 | ||
19819 | 1: DW_TAG_compile_unit | |
19820 | 2: DW_TAG_namespace // N | |
19821 | 3: DW_TAG_subprogram // declaration of N::foo | |
19822 | 4: DW_TAG_subprogram // definition of N::foo | |
19823 | DW_AT_specification // refers to die #3 | |
19824 | ||
19825 | Thus, when processing die #4, we have to pretend that we're in | |
19826 | the context of its DW_AT_specification, namely the contex of die | |
19827 | #3. */ | |
19828 | spec_cu = cu; | |
19829 | spec_die = die_specification (die, &spec_cu); | |
19830 | if (spec_die == NULL) | |
19831 | parent = die->parent; | |
19832 | else | |
63d06c5c | 19833 | { |
0114d602 DJ |
19834 | parent = spec_die->parent; |
19835 | cu = spec_cu; | |
63d06c5c | 19836 | } |
0114d602 DJ |
19837 | |
19838 | if (parent == NULL) | |
19839 | return ""; | |
98bfdba5 PA |
19840 | else if (parent->building_fullname) |
19841 | { | |
19842 | const char *name; | |
19843 | const char *parent_name; | |
19844 | ||
19845 | /* It has been seen on RealView 2.2 built binaries, | |
19846 | DW_TAG_template_type_param types actually _defined_ as | |
19847 | children of the parent class: | |
19848 | ||
19849 | enum E {}; | |
19850 | template class <class Enum> Class{}; | |
19851 | Class<enum E> class_e; | |
19852 | ||
19853 | 1: DW_TAG_class_type (Class) | |
19854 | 2: DW_TAG_enumeration_type (E) | |
19855 | 3: DW_TAG_enumerator (enum1:0) | |
19856 | 3: DW_TAG_enumerator (enum2:1) | |
19857 | ... | |
19858 | 2: DW_TAG_template_type_param | |
19859 | DW_AT_type DW_FORM_ref_udata (E) | |
19860 | ||
19861 | Besides being broken debug info, it can put GDB into an | |
19862 | infinite loop. Consider: | |
19863 | ||
19864 | When we're building the full name for Class<E>, we'll start | |
19865 | at Class, and go look over its template type parameters, | |
19866 | finding E. We'll then try to build the full name of E, and | |
19867 | reach here. We're now trying to build the full name of E, | |
19868 | and look over the parent DIE for containing scope. In the | |
19869 | broken case, if we followed the parent DIE of E, we'd again | |
19870 | find Class, and once again go look at its template type | |
19871 | arguments, etc., etc. Simply don't consider such parent die | |
19872 | as source-level parent of this die (it can't be, the language | |
19873 | doesn't allow it), and break the loop here. */ | |
19874 | name = dwarf2_name (die, cu); | |
19875 | parent_name = dwarf2_name (parent, cu); | |
19876 | complaint (&symfile_complaints, | |
19877 | _("template param type '%s' defined within parent '%s'"), | |
19878 | name ? name : "<unknown>", | |
19879 | parent_name ? parent_name : "<unknown>"); | |
19880 | return ""; | |
19881 | } | |
63d06c5c | 19882 | else |
0114d602 DJ |
19883 | switch (parent->tag) |
19884 | { | |
63d06c5c | 19885 | case DW_TAG_namespace: |
0114d602 | 19886 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
19887 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
19888 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
19889 | Work around this problem here. */ | |
19890 | if (cu->language == language_cplus | |
19891 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
19892 | return ""; | |
0114d602 DJ |
19893 | /* We give a name to even anonymous namespaces. */ |
19894 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 19895 | case DW_TAG_class_type: |
680b30c7 | 19896 | case DW_TAG_interface_type: |
63d06c5c | 19897 | case DW_TAG_structure_type: |
0114d602 | 19898 | case DW_TAG_union_type: |
f55ee35c | 19899 | case DW_TAG_module: |
0114d602 DJ |
19900 | parent_type = read_type_die (parent, cu); |
19901 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19902 | return TYPE_TAG_NAME (parent_type); | |
19903 | else | |
19904 | /* An anonymous structure is only allowed non-static data | |
19905 | members; no typedefs, no member functions, et cetera. | |
19906 | So it does not need a prefix. */ | |
19907 | return ""; | |
abc72ce4 | 19908 | case DW_TAG_compile_unit: |
95554aad | 19909 | case DW_TAG_partial_unit: |
abc72ce4 DE |
19910 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
19911 | if (cu->language == language_cplus | |
8b70b953 | 19912 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
19913 | && die->child != NULL |
19914 | && (die->tag == DW_TAG_class_type | |
19915 | || die->tag == DW_TAG_structure_type | |
19916 | || die->tag == DW_TAG_union_type)) | |
19917 | { | |
19918 | char *name = guess_full_die_structure_name (die, cu); | |
19919 | if (name != NULL) | |
19920 | return name; | |
19921 | } | |
19922 | return ""; | |
3d567982 TT |
19923 | case DW_TAG_enumeration_type: |
19924 | parent_type = read_type_die (parent, cu); | |
19925 | if (TYPE_DECLARED_CLASS (parent_type)) | |
19926 | { | |
19927 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19928 | return TYPE_TAG_NAME (parent_type); | |
19929 | return ""; | |
19930 | } | |
19931 | /* Fall through. */ | |
63d06c5c | 19932 | default: |
8176b9b8 | 19933 | return determine_prefix (parent, cu); |
63d06c5c | 19934 | } |
63d06c5c DC |
19935 | } |
19936 | ||
3e43a32a MS |
19937 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
19938 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
19939 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
19940 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
19941 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 19942 | |
f55ee35c | 19943 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
19944 | |
19945 | static char * | |
f55ee35c JK |
19946 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
19947 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 19948 | { |
f55ee35c | 19949 | const char *lead = ""; |
5c315b68 | 19950 | const char *sep; |
63d06c5c | 19951 | |
3e43a32a MS |
19952 | if (suffix == NULL || suffix[0] == '\0' |
19953 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 19954 | sep = ""; |
45280282 IB |
19955 | else if (cu->language == language_d) |
19956 | { | |
19957 | /* For D, the 'main' function could be defined in any module, but it | |
19958 | should never be prefixed. */ | |
19959 | if (strcmp (suffix, "D main") == 0) | |
19960 | { | |
19961 | prefix = ""; | |
19962 | sep = ""; | |
19963 | } | |
19964 | else | |
19965 | sep = "."; | |
19966 | } | |
f55ee35c JK |
19967 | else if (cu->language == language_fortran && physname) |
19968 | { | |
19969 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
19970 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
19971 | ||
19972 | lead = "__"; | |
19973 | sep = "_MOD_"; | |
19974 | } | |
987504bb JJ |
19975 | else |
19976 | sep = "::"; | |
63d06c5c | 19977 | |
6dd47d34 DE |
19978 | if (prefix == NULL) |
19979 | prefix = ""; | |
19980 | if (suffix == NULL) | |
19981 | suffix = ""; | |
19982 | ||
987504bb JJ |
19983 | if (obs == NULL) |
19984 | { | |
3e43a32a | 19985 | char *retval |
224c3ddb SM |
19986 | = ((char *) |
19987 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 19988 | |
f55ee35c JK |
19989 | strcpy (retval, lead); |
19990 | strcat (retval, prefix); | |
6dd47d34 DE |
19991 | strcat (retval, sep); |
19992 | strcat (retval, suffix); | |
63d06c5c DC |
19993 | return retval; |
19994 | } | |
987504bb JJ |
19995 | else |
19996 | { | |
19997 | /* We have an obstack. */ | |
f55ee35c | 19998 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 19999 | } |
63d06c5c DC |
20000 | } |
20001 | ||
c906108c SS |
20002 | /* Return sibling of die, NULL if no sibling. */ |
20003 | ||
f9aca02d | 20004 | static struct die_info * |
fba45db2 | 20005 | sibling_die (struct die_info *die) |
c906108c | 20006 | { |
639d11d3 | 20007 | return die->sibling; |
c906108c SS |
20008 | } |
20009 | ||
71c25dea TT |
20010 | /* Get name of a die, return NULL if not found. */ |
20011 | ||
15d034d0 TT |
20012 | static const char * |
20013 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
20014 | struct obstack *obstack) |
20015 | { | |
20016 | if (name && cu->language == language_cplus) | |
20017 | { | |
2f408ecb | 20018 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 20019 | |
2f408ecb | 20020 | if (!canon_name.empty ()) |
71c25dea | 20021 | { |
2f408ecb PA |
20022 | if (canon_name != name) |
20023 | name = (const char *) obstack_copy0 (obstack, | |
20024 | canon_name.c_str (), | |
20025 | canon_name.length ()); | |
71c25dea TT |
20026 | } |
20027 | } | |
20028 | ||
20029 | return name; | |
c906108c SS |
20030 | } |
20031 | ||
96553a0c DE |
20032 | /* Get name of a die, return NULL if not found. |
20033 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 20034 | |
15d034d0 | 20035 | static const char * |
e142c38c | 20036 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
20037 | { |
20038 | struct attribute *attr; | |
20039 | ||
e142c38c | 20040 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 20041 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 20042 | && die->tag != DW_TAG_namespace |
53832f31 TT |
20043 | && die->tag != DW_TAG_class_type |
20044 | && die->tag != DW_TAG_interface_type | |
20045 | && die->tag != DW_TAG_structure_type | |
20046 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
20047 | return NULL; |
20048 | ||
20049 | switch (die->tag) | |
20050 | { | |
20051 | case DW_TAG_compile_unit: | |
95554aad | 20052 | case DW_TAG_partial_unit: |
71c25dea TT |
20053 | /* Compilation units have a DW_AT_name that is a filename, not |
20054 | a source language identifier. */ | |
20055 | case DW_TAG_enumeration_type: | |
20056 | case DW_TAG_enumerator: | |
20057 | /* These tags always have simple identifiers already; no need | |
20058 | to canonicalize them. */ | |
20059 | return DW_STRING (attr); | |
907af001 | 20060 | |
96553a0c DE |
20061 | case DW_TAG_namespace: |
20062 | if (attr != NULL && DW_STRING (attr) != NULL) | |
20063 | return DW_STRING (attr); | |
20064 | return CP_ANONYMOUS_NAMESPACE_STR; | |
20065 | ||
907af001 UW |
20066 | case DW_TAG_class_type: |
20067 | case DW_TAG_interface_type: | |
20068 | case DW_TAG_structure_type: | |
20069 | case DW_TAG_union_type: | |
20070 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
20071 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
20072 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
20073 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 20074 | if (attr && DW_STRING (attr) |
61012eef GB |
20075 | && (startswith (DW_STRING (attr), "._") |
20076 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 20077 | return NULL; |
53832f31 TT |
20078 | |
20079 | /* GCC might emit a nameless typedef that has a linkage name. See | |
20080 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
20081 | if (!attr || DW_STRING (attr) == NULL) | |
20082 | { | |
df5c6c50 | 20083 | char *demangled = NULL; |
53832f31 TT |
20084 | |
20085 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
20086 | if (attr == NULL) | |
20087 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
20088 | ||
20089 | if (attr == NULL || DW_STRING (attr) == NULL) | |
20090 | return NULL; | |
20091 | ||
df5c6c50 JK |
20092 | /* Avoid demangling DW_STRING (attr) the second time on a second |
20093 | call for the same DIE. */ | |
20094 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 20095 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
20096 | |
20097 | if (demangled) | |
20098 | { | |
e6a959d6 | 20099 | const char *base; |
96408a79 | 20100 | |
53832f31 | 20101 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 20102 | DW_STRING (attr) |
224c3ddb SM |
20103 | = ((const char *) |
20104 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
20105 | demangled, strlen (demangled))); | |
53832f31 TT |
20106 | DW_STRING_IS_CANONICAL (attr) = 1; |
20107 | xfree (demangled); | |
96408a79 SA |
20108 | |
20109 | /* Strip any leading namespaces/classes, keep only the base name. | |
20110 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
20111 | base = strrchr (DW_STRING (attr), ':'); | |
20112 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
20113 | return &base[1]; | |
20114 | else | |
20115 | return DW_STRING (attr); | |
53832f31 TT |
20116 | } |
20117 | } | |
907af001 UW |
20118 | break; |
20119 | ||
71c25dea | 20120 | default: |
907af001 UW |
20121 | break; |
20122 | } | |
20123 | ||
20124 | if (!DW_STRING_IS_CANONICAL (attr)) | |
20125 | { | |
20126 | DW_STRING (attr) | |
20127 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
34a68019 | 20128 | &cu->objfile->per_bfd->storage_obstack); |
907af001 | 20129 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 20130 | } |
907af001 | 20131 | return DW_STRING (attr); |
9219021c DC |
20132 | } |
20133 | ||
20134 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
20135 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
20136 | containing the return value on output. */ | |
9219021c DC |
20137 | |
20138 | static struct die_info * | |
f2f0e013 | 20139 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
20140 | { |
20141 | struct attribute *attr; | |
9219021c | 20142 | |
f2f0e013 | 20143 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
20144 | if (attr == NULL) |
20145 | return NULL; | |
20146 | ||
f2f0e013 | 20147 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
20148 | } |
20149 | ||
c906108c SS |
20150 | /* Convert a DIE tag into its string name. */ |
20151 | ||
f39c6ffd | 20152 | static const char * |
aa1ee363 | 20153 | dwarf_tag_name (unsigned tag) |
c906108c | 20154 | { |
f39c6ffd TT |
20155 | const char *name = get_DW_TAG_name (tag); |
20156 | ||
20157 | if (name == NULL) | |
20158 | return "DW_TAG_<unknown>"; | |
20159 | ||
20160 | return name; | |
c906108c SS |
20161 | } |
20162 | ||
20163 | /* Convert a DWARF attribute code into its string name. */ | |
20164 | ||
f39c6ffd | 20165 | static const char * |
aa1ee363 | 20166 | dwarf_attr_name (unsigned attr) |
c906108c | 20167 | { |
f39c6ffd TT |
20168 | const char *name; |
20169 | ||
c764a876 | 20170 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
20171 | if (attr == DW_AT_MIPS_fde) |
20172 | return "DW_AT_MIPS_fde"; | |
20173 | #else | |
20174 | if (attr == DW_AT_HP_block_index) | |
20175 | return "DW_AT_HP_block_index"; | |
c764a876 | 20176 | #endif |
f39c6ffd TT |
20177 | |
20178 | name = get_DW_AT_name (attr); | |
20179 | ||
20180 | if (name == NULL) | |
20181 | return "DW_AT_<unknown>"; | |
20182 | ||
20183 | return name; | |
c906108c SS |
20184 | } |
20185 | ||
20186 | /* Convert a DWARF value form code into its string name. */ | |
20187 | ||
f39c6ffd | 20188 | static const char * |
aa1ee363 | 20189 | dwarf_form_name (unsigned form) |
c906108c | 20190 | { |
f39c6ffd TT |
20191 | const char *name = get_DW_FORM_name (form); |
20192 | ||
20193 | if (name == NULL) | |
20194 | return "DW_FORM_<unknown>"; | |
20195 | ||
20196 | return name; | |
c906108c SS |
20197 | } |
20198 | ||
20199 | static char * | |
fba45db2 | 20200 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
20201 | { |
20202 | if (mybool) | |
20203 | return "TRUE"; | |
20204 | else | |
20205 | return "FALSE"; | |
20206 | } | |
20207 | ||
20208 | /* Convert a DWARF type code into its string name. */ | |
20209 | ||
f39c6ffd | 20210 | static const char * |
aa1ee363 | 20211 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 20212 | { |
f39c6ffd | 20213 | const char *name = get_DW_ATE_name (enc); |
c906108c | 20214 | |
f39c6ffd TT |
20215 | if (name == NULL) |
20216 | return "DW_ATE_<unknown>"; | |
c906108c | 20217 | |
f39c6ffd | 20218 | return name; |
c906108c | 20219 | } |
c906108c | 20220 | |
f9aca02d | 20221 | static void |
d97bc12b | 20222 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
20223 | { |
20224 | unsigned int i; | |
20225 | ||
d97bc12b DE |
20226 | print_spaces (indent, f); |
20227 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 20228 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
20229 | |
20230 | if (die->parent != NULL) | |
20231 | { | |
20232 | print_spaces (indent, f); | |
20233 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 20234 | die->parent->offset.sect_off); |
d97bc12b DE |
20235 | } |
20236 | ||
20237 | print_spaces (indent, f); | |
20238 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 20239 | dwarf_bool_name (die->child != NULL)); |
c906108c | 20240 | |
d97bc12b DE |
20241 | print_spaces (indent, f); |
20242 | fprintf_unfiltered (f, " attributes:\n"); | |
20243 | ||
c906108c SS |
20244 | for (i = 0; i < die->num_attrs; ++i) |
20245 | { | |
d97bc12b DE |
20246 | print_spaces (indent, f); |
20247 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
20248 | dwarf_attr_name (die->attrs[i].name), |
20249 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 20250 | |
c906108c SS |
20251 | switch (die->attrs[i].form) |
20252 | { | |
c906108c | 20253 | case DW_FORM_addr: |
3019eac3 | 20254 | case DW_FORM_GNU_addr_index: |
d97bc12b | 20255 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 20256 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
20257 | break; |
20258 | case DW_FORM_block2: | |
20259 | case DW_FORM_block4: | |
20260 | case DW_FORM_block: | |
20261 | case DW_FORM_block1: | |
56eb65bd SP |
20262 | fprintf_unfiltered (f, "block: size %s", |
20263 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 20264 | break; |
2dc7f7b3 | 20265 | case DW_FORM_exprloc: |
56eb65bd SP |
20266 | fprintf_unfiltered (f, "expression: size %s", |
20267 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 20268 | break; |
0224619f JK |
20269 | case DW_FORM_data16: |
20270 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
20271 | break; | |
4568ecf9 DE |
20272 | case DW_FORM_ref_addr: |
20273 | fprintf_unfiltered (f, "ref address: "); | |
20274 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
20275 | break; | |
36586728 TT |
20276 | case DW_FORM_GNU_ref_alt: |
20277 | fprintf_unfiltered (f, "alt ref address: "); | |
20278 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
20279 | break; | |
10b3939b DJ |
20280 | case DW_FORM_ref1: |
20281 | case DW_FORM_ref2: | |
20282 | case DW_FORM_ref4: | |
4568ecf9 DE |
20283 | case DW_FORM_ref8: |
20284 | case DW_FORM_ref_udata: | |
d97bc12b | 20285 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 20286 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 20287 | break; |
c906108c SS |
20288 | case DW_FORM_data1: |
20289 | case DW_FORM_data2: | |
20290 | case DW_FORM_data4: | |
ce5d95e1 | 20291 | case DW_FORM_data8: |
c906108c SS |
20292 | case DW_FORM_udata: |
20293 | case DW_FORM_sdata: | |
43bbcdc2 PH |
20294 | fprintf_unfiltered (f, "constant: %s", |
20295 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 20296 | break; |
2dc7f7b3 TT |
20297 | case DW_FORM_sec_offset: |
20298 | fprintf_unfiltered (f, "section offset: %s", | |
20299 | pulongest (DW_UNSND (&die->attrs[i]))); | |
20300 | break; | |
55f1336d | 20301 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
20302 | fprintf_unfiltered (f, "signature: %s", |
20303 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 20304 | break; |
c906108c | 20305 | case DW_FORM_string: |
4bdf3d34 | 20306 | case DW_FORM_strp: |
43988095 | 20307 | case DW_FORM_line_strp: |
3019eac3 | 20308 | case DW_FORM_GNU_str_index: |
36586728 | 20309 | case DW_FORM_GNU_strp_alt: |
8285870a | 20310 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 20311 | DW_STRING (&die->attrs[i]) |
8285870a JK |
20312 | ? DW_STRING (&die->attrs[i]) : "", |
20313 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
20314 | break; |
20315 | case DW_FORM_flag: | |
20316 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 20317 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 20318 | else |
d97bc12b | 20319 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 20320 | break; |
2dc7f7b3 TT |
20321 | case DW_FORM_flag_present: |
20322 | fprintf_unfiltered (f, "flag: TRUE"); | |
20323 | break; | |
a8329558 | 20324 | case DW_FORM_indirect: |
0963b4bd MS |
20325 | /* The reader will have reduced the indirect form to |
20326 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
20327 | fprintf_unfiltered (f, |
20328 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 20329 | break; |
c906108c | 20330 | default: |
d97bc12b | 20331 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 20332 | die->attrs[i].form); |
d97bc12b | 20333 | break; |
c906108c | 20334 | } |
d97bc12b | 20335 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
20336 | } |
20337 | } | |
20338 | ||
f9aca02d | 20339 | static void |
d97bc12b | 20340 | dump_die_for_error (struct die_info *die) |
c906108c | 20341 | { |
d97bc12b DE |
20342 | dump_die_shallow (gdb_stderr, 0, die); |
20343 | } | |
20344 | ||
20345 | static void | |
20346 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
20347 | { | |
20348 | int indent = level * 4; | |
20349 | ||
20350 | gdb_assert (die != NULL); | |
20351 | ||
20352 | if (level >= max_level) | |
20353 | return; | |
20354 | ||
20355 | dump_die_shallow (f, indent, die); | |
20356 | ||
20357 | if (die->child != NULL) | |
c906108c | 20358 | { |
d97bc12b DE |
20359 | print_spaces (indent, f); |
20360 | fprintf_unfiltered (f, " Children:"); | |
20361 | if (level + 1 < max_level) | |
20362 | { | |
20363 | fprintf_unfiltered (f, "\n"); | |
20364 | dump_die_1 (f, level + 1, max_level, die->child); | |
20365 | } | |
20366 | else | |
20367 | { | |
3e43a32a MS |
20368 | fprintf_unfiltered (f, |
20369 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
20370 | } |
20371 | } | |
20372 | ||
20373 | if (die->sibling != NULL && level > 0) | |
20374 | { | |
20375 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
20376 | } |
20377 | } | |
20378 | ||
d97bc12b DE |
20379 | /* This is called from the pdie macro in gdbinit.in. |
20380 | It's not static so gcc will keep a copy callable from gdb. */ | |
20381 | ||
20382 | void | |
20383 | dump_die (struct die_info *die, int max_level) | |
20384 | { | |
20385 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
20386 | } | |
20387 | ||
f9aca02d | 20388 | static void |
51545339 | 20389 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20390 | { |
51545339 | 20391 | void **slot; |
c906108c | 20392 | |
b64f50a1 JK |
20393 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
20394 | INSERT); | |
51545339 DJ |
20395 | |
20396 | *slot = die; | |
c906108c SS |
20397 | } |
20398 | ||
b64f50a1 JK |
20399 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
20400 | required kind. */ | |
20401 | ||
20402 | static sect_offset | |
ff39bb5e | 20403 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 20404 | { |
4568ecf9 | 20405 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 20406 | |
7771576e | 20407 | if (attr_form_is_ref (attr)) |
b64f50a1 | 20408 | return retval; |
93311388 | 20409 | |
b64f50a1 | 20410 | retval.sect_off = 0; |
93311388 DE |
20411 | complaint (&symfile_complaints, |
20412 | _("unsupported die ref attribute form: '%s'"), | |
20413 | dwarf_form_name (attr->form)); | |
b64f50a1 | 20414 | return retval; |
c906108c SS |
20415 | } |
20416 | ||
43bbcdc2 PH |
20417 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
20418 | * the value held by the attribute is not constant. */ | |
a02abb62 | 20419 | |
43bbcdc2 | 20420 | static LONGEST |
ff39bb5e | 20421 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 JB |
20422 | { |
20423 | if (attr->form == DW_FORM_sdata) | |
20424 | return DW_SND (attr); | |
20425 | else if (attr->form == DW_FORM_udata | |
20426 | || attr->form == DW_FORM_data1 | |
20427 | || attr->form == DW_FORM_data2 | |
20428 | || attr->form == DW_FORM_data4 | |
20429 | || attr->form == DW_FORM_data8) | |
20430 | return DW_UNSND (attr); | |
20431 | else | |
20432 | { | |
0224619f | 20433 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
3e43a32a MS |
20434 | complaint (&symfile_complaints, |
20435 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
20436 | dwarf_form_name (attr->form)); |
20437 | return default_value; | |
20438 | } | |
20439 | } | |
20440 | ||
348e048f DE |
20441 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
20442 | On entry *REF_CU is the CU of SRC_DIE. | |
20443 | On exit *REF_CU is the CU of the result. */ | |
20444 | ||
20445 | static struct die_info * | |
ff39bb5e | 20446 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
20447 | struct dwarf2_cu **ref_cu) |
20448 | { | |
20449 | struct die_info *die; | |
20450 | ||
7771576e | 20451 | if (attr_form_is_ref (attr)) |
348e048f | 20452 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 20453 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
20454 | die = follow_die_sig (src_die, attr, ref_cu); |
20455 | else | |
20456 | { | |
20457 | dump_die_for_error (src_die); | |
20458 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 20459 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
20460 | } |
20461 | ||
20462 | return die; | |
03dd20cc DJ |
20463 | } |
20464 | ||
5c631832 | 20465 | /* Follow reference OFFSET. |
673bfd45 DE |
20466 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
20467 | On exit *REF_CU is the CU of the result. | |
20468 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 20469 | |
f9aca02d | 20470 | static struct die_info * |
36586728 TT |
20471 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
20472 | struct dwarf2_cu **ref_cu) | |
c906108c | 20473 | { |
10b3939b | 20474 | struct die_info temp_die; |
f2f0e013 | 20475 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 20476 | |
348e048f DE |
20477 | gdb_assert (cu->per_cu != NULL); |
20478 | ||
98bfdba5 PA |
20479 | target_cu = cu; |
20480 | ||
3019eac3 | 20481 | if (cu->per_cu->is_debug_types) |
348e048f DE |
20482 | { |
20483 | /* .debug_types CUs cannot reference anything outside their CU. | |
20484 | If they need to, they have to reference a signatured type via | |
55f1336d | 20485 | DW_FORM_ref_sig8. */ |
348e048f | 20486 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 20487 | return NULL; |
348e048f | 20488 | } |
36586728 TT |
20489 | else if (offset_in_dwz != cu->per_cu->is_dwz |
20490 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
20491 | { |
20492 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 20493 | |
36586728 TT |
20494 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
20495 | cu->objfile); | |
03dd20cc DJ |
20496 | |
20497 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
20498 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
20499 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 20500 | |
10b3939b DJ |
20501 | target_cu = per_cu->cu; |
20502 | } | |
98bfdba5 PA |
20503 | else if (cu->dies == NULL) |
20504 | { | |
20505 | /* We're loading full DIEs during partial symbol reading. */ | |
20506 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 20507 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 20508 | } |
c906108c | 20509 | |
f2f0e013 | 20510 | *ref_cu = target_cu; |
51545339 | 20511 | temp_die.offset = offset; |
9a3c8263 SM |
20512 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
20513 | &temp_die, offset.sect_off); | |
5c631832 | 20514 | } |
10b3939b | 20515 | |
5c631832 JK |
20516 | /* Follow reference attribute ATTR of SRC_DIE. |
20517 | On entry *REF_CU is the CU of SRC_DIE. | |
20518 | On exit *REF_CU is the CU of the result. */ | |
20519 | ||
20520 | static struct die_info * | |
ff39bb5e | 20521 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
20522 | struct dwarf2_cu **ref_cu) |
20523 | { | |
b64f50a1 | 20524 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
20525 | struct dwarf2_cu *cu = *ref_cu; |
20526 | struct die_info *die; | |
20527 | ||
36586728 TT |
20528 | die = follow_die_offset (offset, |
20529 | (attr->form == DW_FORM_GNU_ref_alt | |
20530 | || cu->per_cu->is_dwz), | |
20531 | ref_cu); | |
5c631832 JK |
20532 | if (!die) |
20533 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
20534 | "at 0x%x [in module %s]"), | |
4262abfb JK |
20535 | offset.sect_off, src_die->offset.sect_off, |
20536 | objfile_name (cu->objfile)); | |
348e048f | 20537 | |
5c631832 JK |
20538 | return die; |
20539 | } | |
20540 | ||
d83e736b JK |
20541 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
20542 | Returned value is intended for DW_OP_call*. Returned | |
20543 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
20544 | |
20545 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
20546 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
20547 | struct dwarf2_per_cu_data *per_cu, | |
20548 | CORE_ADDR (*get_frame_pc) (void *baton), | |
20549 | void *baton) | |
5c631832 | 20550 | { |
918dd910 | 20551 | struct dwarf2_cu *cu; |
5c631832 JK |
20552 | struct die_info *die; |
20553 | struct attribute *attr; | |
20554 | struct dwarf2_locexpr_baton retval; | |
20555 | ||
8cf6f0b1 TT |
20556 | dw2_setup (per_cu->objfile); |
20557 | ||
918dd910 JK |
20558 | if (per_cu->cu == NULL) |
20559 | load_cu (per_cu); | |
20560 | cu = per_cu->cu; | |
cc12ce38 DE |
20561 | if (cu == NULL) |
20562 | { | |
20563 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
20564 | Instead just throw an error, not much else we can do. */ | |
20565 | error (_("Dwarf Error: Dummy CU at 0x%x referenced in module %s"), | |
20566 | offset.sect_off, objfile_name (per_cu->objfile)); | |
20567 | } | |
918dd910 | 20568 | |
36586728 | 20569 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
20570 | if (!die) |
20571 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 20572 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
20573 | |
20574 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
20575 | if (!attr) | |
20576 | { | |
e103e986 JK |
20577 | /* DWARF: "If there is no such attribute, then there is no effect.". |
20578 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 20579 | |
e103e986 | 20580 | retval.data = NULL; |
5c631832 JK |
20581 | retval.size = 0; |
20582 | } | |
8cf6f0b1 TT |
20583 | else if (attr_form_is_section_offset (attr)) |
20584 | { | |
20585 | struct dwarf2_loclist_baton loclist_baton; | |
20586 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
20587 | size_t size; | |
20588 | ||
20589 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
20590 | ||
20591 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
20592 | &size, pc); | |
20593 | retval.size = size; | |
20594 | } | |
5c631832 JK |
20595 | else |
20596 | { | |
20597 | if (!attr_form_is_block (attr)) | |
20598 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
20599 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
4262abfb | 20600 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
20601 | |
20602 | retval.data = DW_BLOCK (attr)->data; | |
20603 | retval.size = DW_BLOCK (attr)->size; | |
20604 | } | |
20605 | retval.per_cu = cu->per_cu; | |
918dd910 | 20606 | |
918dd910 JK |
20607 | age_cached_comp_units (); |
20608 | ||
5c631832 | 20609 | return retval; |
348e048f DE |
20610 | } |
20611 | ||
8b9737bf TT |
20612 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
20613 | offset. */ | |
20614 | ||
20615 | struct dwarf2_locexpr_baton | |
20616 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
20617 | struct dwarf2_per_cu_data *per_cu, | |
20618 | CORE_ADDR (*get_frame_pc) (void *baton), | |
20619 | void *baton) | |
20620 | { | |
20621 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
20622 | ||
20623 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
20624 | } | |
20625 | ||
b6807d98 TT |
20626 | /* Write a constant of a given type as target-ordered bytes into |
20627 | OBSTACK. */ | |
20628 | ||
20629 | static const gdb_byte * | |
20630 | write_constant_as_bytes (struct obstack *obstack, | |
20631 | enum bfd_endian byte_order, | |
20632 | struct type *type, | |
20633 | ULONGEST value, | |
20634 | LONGEST *len) | |
20635 | { | |
20636 | gdb_byte *result; | |
20637 | ||
20638 | *len = TYPE_LENGTH (type); | |
224c3ddb | 20639 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
20640 | store_unsigned_integer (result, *len, byte_order, value); |
20641 | ||
20642 | return result; | |
20643 | } | |
20644 | ||
20645 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
20646 | pointer to the constant bytes and set LEN to the length of the | |
20647 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
20648 | does not have a DW_AT_const_value, return NULL. */ | |
20649 | ||
20650 | const gdb_byte * | |
20651 | dwarf2_fetch_constant_bytes (sect_offset offset, | |
20652 | struct dwarf2_per_cu_data *per_cu, | |
20653 | struct obstack *obstack, | |
20654 | LONGEST *len) | |
20655 | { | |
20656 | struct dwarf2_cu *cu; | |
20657 | struct die_info *die; | |
20658 | struct attribute *attr; | |
20659 | const gdb_byte *result = NULL; | |
20660 | struct type *type; | |
20661 | LONGEST value; | |
20662 | enum bfd_endian byte_order; | |
20663 | ||
20664 | dw2_setup (per_cu->objfile); | |
20665 | ||
20666 | if (per_cu->cu == NULL) | |
20667 | load_cu (per_cu); | |
20668 | cu = per_cu->cu; | |
cc12ce38 DE |
20669 | if (cu == NULL) |
20670 | { | |
20671 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
20672 | Instead just throw an error, not much else we can do. */ | |
20673 | error (_("Dwarf Error: Dummy CU at 0x%x referenced in module %s"), | |
20674 | offset.sect_off, objfile_name (per_cu->objfile)); | |
20675 | } | |
b6807d98 TT |
20676 | |
20677 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); | |
20678 | if (!die) | |
20679 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 20680 | offset.sect_off, objfile_name (per_cu->objfile)); |
b6807d98 TT |
20681 | |
20682 | ||
20683 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
20684 | if (attr == NULL) | |
20685 | return NULL; | |
20686 | ||
20687 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
20688 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
20689 | ||
20690 | switch (attr->form) | |
20691 | { | |
20692 | case DW_FORM_addr: | |
20693 | case DW_FORM_GNU_addr_index: | |
20694 | { | |
20695 | gdb_byte *tem; | |
20696 | ||
20697 | *len = cu->header.addr_size; | |
224c3ddb | 20698 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
20699 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
20700 | result = tem; | |
20701 | } | |
20702 | break; | |
20703 | case DW_FORM_string: | |
20704 | case DW_FORM_strp: | |
20705 | case DW_FORM_GNU_str_index: | |
20706 | case DW_FORM_GNU_strp_alt: | |
20707 | /* DW_STRING is already allocated on the objfile obstack, point | |
20708 | directly to it. */ | |
20709 | result = (const gdb_byte *) DW_STRING (attr); | |
20710 | *len = strlen (DW_STRING (attr)); | |
20711 | break; | |
20712 | case DW_FORM_block1: | |
20713 | case DW_FORM_block2: | |
20714 | case DW_FORM_block4: | |
20715 | case DW_FORM_block: | |
20716 | case DW_FORM_exprloc: | |
0224619f | 20717 | case DW_FORM_data16: |
b6807d98 TT |
20718 | result = DW_BLOCK (attr)->data; |
20719 | *len = DW_BLOCK (attr)->size; | |
20720 | break; | |
20721 | ||
20722 | /* The DW_AT_const_value attributes are supposed to carry the | |
20723 | symbol's value "represented as it would be on the target | |
20724 | architecture." By the time we get here, it's already been | |
20725 | converted to host endianness, so we just need to sign- or | |
20726 | zero-extend it as appropriate. */ | |
20727 | case DW_FORM_data1: | |
20728 | type = die_type (die, cu); | |
20729 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
20730 | if (result == NULL) | |
20731 | result = write_constant_as_bytes (obstack, byte_order, | |
20732 | type, value, len); | |
20733 | break; | |
20734 | case DW_FORM_data2: | |
20735 | type = die_type (die, cu); | |
20736 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
20737 | if (result == NULL) | |
20738 | result = write_constant_as_bytes (obstack, byte_order, | |
20739 | type, value, len); | |
20740 | break; | |
20741 | case DW_FORM_data4: | |
20742 | type = die_type (die, cu); | |
20743 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
20744 | if (result == NULL) | |
20745 | result = write_constant_as_bytes (obstack, byte_order, | |
20746 | type, value, len); | |
20747 | break; | |
20748 | case DW_FORM_data8: | |
20749 | type = die_type (die, cu); | |
20750 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
20751 | if (result == NULL) | |
20752 | result = write_constant_as_bytes (obstack, byte_order, | |
20753 | type, value, len); | |
20754 | break; | |
20755 | ||
20756 | case DW_FORM_sdata: | |
20757 | type = die_type (die, cu); | |
20758 | result = write_constant_as_bytes (obstack, byte_order, | |
20759 | type, DW_SND (attr), len); | |
20760 | break; | |
20761 | ||
20762 | case DW_FORM_udata: | |
20763 | type = die_type (die, cu); | |
20764 | result = write_constant_as_bytes (obstack, byte_order, | |
20765 | type, DW_UNSND (attr), len); | |
20766 | break; | |
20767 | ||
20768 | default: | |
20769 | complaint (&symfile_complaints, | |
20770 | _("unsupported const value attribute form: '%s'"), | |
20771 | dwarf_form_name (attr->form)); | |
20772 | break; | |
20773 | } | |
20774 | ||
20775 | return result; | |
20776 | } | |
20777 | ||
8a9b8146 TT |
20778 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
20779 | PER_CU. */ | |
20780 | ||
20781 | struct type * | |
b64f50a1 | 20782 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
20783 | struct dwarf2_per_cu_data *per_cu) |
20784 | { | |
b64f50a1 JK |
20785 | sect_offset die_offset_sect; |
20786 | ||
8a9b8146 | 20787 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
20788 | |
20789 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
20790 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
20791 | } |
20792 | ||
ac9ec31b | 20793 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 20794 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
20795 | On exit *REF_CU is the CU of the result. |
20796 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
20797 | |
20798 | static struct die_info * | |
ac9ec31b DE |
20799 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
20800 | struct dwarf2_cu **ref_cu) | |
348e048f | 20801 | { |
348e048f | 20802 | struct die_info temp_die; |
348e048f DE |
20803 | struct dwarf2_cu *sig_cu; |
20804 | struct die_info *die; | |
20805 | ||
ac9ec31b DE |
20806 | /* While it might be nice to assert sig_type->type == NULL here, |
20807 | we can get here for DW_AT_imported_declaration where we need | |
20808 | the DIE not the type. */ | |
348e048f DE |
20809 | |
20810 | /* If necessary, add it to the queue and load its DIEs. */ | |
20811 | ||
95554aad | 20812 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 20813 | read_signatured_type (sig_type); |
348e048f | 20814 | |
348e048f | 20815 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 20816 | gdb_assert (sig_cu != NULL); |
3019eac3 DE |
20817 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
20818 | temp_die.offset = sig_type->type_offset_in_section; | |
9a3c8263 SM |
20819 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
20820 | temp_die.offset.sect_off); | |
348e048f DE |
20821 | if (die) |
20822 | { | |
796a7ff8 DE |
20823 | /* For .gdb_index version 7 keep track of included TUs. |
20824 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
20825 | if (dwarf2_per_objfile->index_table != NULL | |
20826 | && dwarf2_per_objfile->index_table->version <= 7) | |
20827 | { | |
20828 | VEC_safe_push (dwarf2_per_cu_ptr, | |
20829 | (*ref_cu)->per_cu->imported_symtabs, | |
20830 | sig_cu->per_cu); | |
20831 | } | |
20832 | ||
348e048f DE |
20833 | *ref_cu = sig_cu; |
20834 | return die; | |
20835 | } | |
20836 | ||
ac9ec31b DE |
20837 | return NULL; |
20838 | } | |
20839 | ||
20840 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
20841 | On entry *REF_CU is the CU of SRC_DIE. | |
20842 | On exit *REF_CU is the CU of the result. | |
20843 | The result is the DIE of the type. | |
20844 | If the referenced type cannot be found an error is thrown. */ | |
20845 | ||
20846 | static struct die_info * | |
ff39bb5e | 20847 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
20848 | struct dwarf2_cu **ref_cu) |
20849 | { | |
20850 | ULONGEST signature = DW_SIGNATURE (attr); | |
20851 | struct signatured_type *sig_type; | |
20852 | struct die_info *die; | |
20853 | ||
20854 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
20855 | ||
a2ce51a0 | 20856 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
20857 | /* sig_type will be NULL if the signatured type is missing from |
20858 | the debug info. */ | |
20859 | if (sig_type == NULL) | |
20860 | { | |
20861 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20862 | " from DIE at 0x%x [in module %s]"), | |
20863 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20864 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20865 | } |
20866 | ||
20867 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
20868 | if (die == NULL) | |
20869 | { | |
20870 | dump_die_for_error (src_die); | |
20871 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20872 | " from DIE at 0x%x [in module %s]"), | |
20873 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20874 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20875 | } |
20876 | ||
20877 | return die; | |
20878 | } | |
20879 | ||
20880 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
20881 | reading in and processing the type unit if necessary. */ | |
20882 | ||
20883 | static struct type * | |
20884 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
20885 | struct dwarf2_cu *cu) | |
20886 | { | |
20887 | struct signatured_type *sig_type; | |
20888 | struct dwarf2_cu *type_cu; | |
20889 | struct die_info *type_die; | |
20890 | struct type *type; | |
20891 | ||
a2ce51a0 | 20892 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
20893 | /* sig_type will be NULL if the signatured type is missing from |
20894 | the debug info. */ | |
20895 | if (sig_type == NULL) | |
20896 | { | |
20897 | complaint (&symfile_complaints, | |
20898 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20899 | " from DIE at 0x%x [in module %s]"), | |
20900 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20901 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20902 | return build_error_marker_type (cu, die); |
20903 | } | |
20904 | ||
20905 | /* If we already know the type we're done. */ | |
20906 | if (sig_type->type != NULL) | |
20907 | return sig_type->type; | |
20908 | ||
20909 | type_cu = cu; | |
20910 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
20911 | if (type_die != NULL) | |
20912 | { | |
20913 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
20914 | is created. This is important, for example, because for c++ classes | |
20915 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
20916 | type = read_type_die (type_die, type_cu); | |
20917 | if (type == NULL) | |
20918 | { | |
20919 | complaint (&symfile_complaints, | |
20920 | _("Dwarf Error: Cannot build signatured type %s" | |
20921 | " referenced from DIE at 0x%x [in module %s]"), | |
20922 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20923 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20924 | type = build_error_marker_type (cu, die); |
20925 | } | |
20926 | } | |
20927 | else | |
20928 | { | |
20929 | complaint (&symfile_complaints, | |
20930 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20931 | " from DIE at 0x%x [in module %s]"), | |
20932 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20933 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20934 | type = build_error_marker_type (cu, die); |
20935 | } | |
20936 | sig_type->type = type; | |
20937 | ||
20938 | return type; | |
20939 | } | |
20940 | ||
20941 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
20942 | reading in and processing the type unit if necessary. */ | |
20943 | ||
20944 | static struct type * | |
ff39bb5e | 20945 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 20946 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
20947 | { |
20948 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 20949 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
20950 | { |
20951 | struct dwarf2_cu *type_cu = cu; | |
20952 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
20953 | ||
20954 | return read_type_die (type_die, type_cu); | |
20955 | } | |
20956 | else if (attr->form == DW_FORM_ref_sig8) | |
20957 | { | |
20958 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
20959 | } | |
20960 | else | |
20961 | { | |
20962 | complaint (&symfile_complaints, | |
20963 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
20964 | " at 0x%x [in module %s]"), | |
20965 | dwarf_form_name (attr->form), die->offset.sect_off, | |
4262abfb | 20966 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20967 | return build_error_marker_type (cu, die); |
20968 | } | |
348e048f DE |
20969 | } |
20970 | ||
e5fe5e75 | 20971 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
20972 | |
20973 | static void | |
e5fe5e75 | 20974 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 20975 | { |
52dc124a | 20976 | struct signatured_type *sig_type; |
348e048f | 20977 | |
f4dc4d17 DE |
20978 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
20979 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
20980 | ||
6721b2ec DE |
20981 | /* We have the per_cu, but we need the signatured_type. |
20982 | Fortunately this is an easy translation. */ | |
20983 | gdb_assert (per_cu->is_debug_types); | |
20984 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 20985 | |
6721b2ec | 20986 | gdb_assert (per_cu->cu == NULL); |
348e048f | 20987 | |
52dc124a | 20988 | read_signatured_type (sig_type); |
348e048f | 20989 | |
6721b2ec | 20990 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
20991 | } |
20992 | ||
dee91e82 DE |
20993 | /* die_reader_func for read_signatured_type. |
20994 | This is identical to load_full_comp_unit_reader, | |
20995 | but is kept separate for now. */ | |
348e048f DE |
20996 | |
20997 | static void | |
dee91e82 | 20998 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 20999 | const gdb_byte *info_ptr, |
dee91e82 DE |
21000 | struct die_info *comp_unit_die, |
21001 | int has_children, | |
21002 | void *data) | |
348e048f | 21003 | { |
dee91e82 | 21004 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 21005 | |
dee91e82 DE |
21006 | gdb_assert (cu->die_hash == NULL); |
21007 | cu->die_hash = | |
21008 | htab_create_alloc_ex (cu->header.length / 12, | |
21009 | die_hash, | |
21010 | die_eq, | |
21011 | NULL, | |
21012 | &cu->comp_unit_obstack, | |
21013 | hashtab_obstack_allocate, | |
21014 | dummy_obstack_deallocate); | |
348e048f | 21015 | |
dee91e82 DE |
21016 | if (has_children) |
21017 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
21018 | &info_ptr, comp_unit_die); | |
21019 | cu->dies = comp_unit_die; | |
21020 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
21021 | |
21022 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 21023 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 21024 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
21025 | or we won't be able to build types correctly. |
21026 | Similarly, if we do not read the producer, we can not apply | |
21027 | producer-specific interpretation. */ | |
95554aad | 21028 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 21029 | } |
348e048f | 21030 | |
3019eac3 DE |
21031 | /* Read in a signatured type and build its CU and DIEs. |
21032 | If the type is a stub for the real type in a DWO file, | |
21033 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
21034 | |
21035 | static void | |
21036 | read_signatured_type (struct signatured_type *sig_type) | |
21037 | { | |
21038 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 21039 | |
3019eac3 | 21040 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 21041 | gdb_assert (per_cu->cu == NULL); |
348e048f | 21042 | |
f4dc4d17 DE |
21043 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
21044 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 21045 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
21046 | } |
21047 | ||
c906108c SS |
21048 | /* Decode simple location descriptions. |
21049 | Given a pointer to a dwarf block that defines a location, compute | |
21050 | the location and return the value. | |
21051 | ||
4cecd739 DJ |
21052 | NOTE drow/2003-11-18: This function is called in two situations |
21053 | now: for the address of static or global variables (partial symbols | |
21054 | only) and for offsets into structures which are expected to be | |
21055 | (more or less) constant. The partial symbol case should go away, | |
21056 | and only the constant case should remain. That will let this | |
21057 | function complain more accurately. A few special modes are allowed | |
21058 | without complaint for global variables (for instance, global | |
21059 | register values and thread-local values). | |
c906108c SS |
21060 | |
21061 | A location description containing no operations indicates that the | |
4cecd739 | 21062 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
21063 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
21064 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
21065 | complaint. |
21066 | ||
21067 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
21068 | |
21069 | static CORE_ADDR | |
e7c27a73 | 21070 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 21071 | { |
e7c27a73 | 21072 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
21073 | size_t i; |
21074 | size_t size = blk->size; | |
d521ce57 | 21075 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
21076 | CORE_ADDR stack[64]; |
21077 | int stacki; | |
21078 | unsigned int bytes_read, unsnd; | |
21079 | gdb_byte op; | |
c906108c | 21080 | |
21ae7a4d JK |
21081 | i = 0; |
21082 | stacki = 0; | |
21083 | stack[stacki] = 0; | |
21084 | stack[++stacki] = 0; | |
21085 | ||
21086 | while (i < size) | |
21087 | { | |
21088 | op = data[i++]; | |
21089 | switch (op) | |
21090 | { | |
21091 | case DW_OP_lit0: | |
21092 | case DW_OP_lit1: | |
21093 | case DW_OP_lit2: | |
21094 | case DW_OP_lit3: | |
21095 | case DW_OP_lit4: | |
21096 | case DW_OP_lit5: | |
21097 | case DW_OP_lit6: | |
21098 | case DW_OP_lit7: | |
21099 | case DW_OP_lit8: | |
21100 | case DW_OP_lit9: | |
21101 | case DW_OP_lit10: | |
21102 | case DW_OP_lit11: | |
21103 | case DW_OP_lit12: | |
21104 | case DW_OP_lit13: | |
21105 | case DW_OP_lit14: | |
21106 | case DW_OP_lit15: | |
21107 | case DW_OP_lit16: | |
21108 | case DW_OP_lit17: | |
21109 | case DW_OP_lit18: | |
21110 | case DW_OP_lit19: | |
21111 | case DW_OP_lit20: | |
21112 | case DW_OP_lit21: | |
21113 | case DW_OP_lit22: | |
21114 | case DW_OP_lit23: | |
21115 | case DW_OP_lit24: | |
21116 | case DW_OP_lit25: | |
21117 | case DW_OP_lit26: | |
21118 | case DW_OP_lit27: | |
21119 | case DW_OP_lit28: | |
21120 | case DW_OP_lit29: | |
21121 | case DW_OP_lit30: | |
21122 | case DW_OP_lit31: | |
21123 | stack[++stacki] = op - DW_OP_lit0; | |
21124 | break; | |
f1bea926 | 21125 | |
21ae7a4d JK |
21126 | case DW_OP_reg0: |
21127 | case DW_OP_reg1: | |
21128 | case DW_OP_reg2: | |
21129 | case DW_OP_reg3: | |
21130 | case DW_OP_reg4: | |
21131 | case DW_OP_reg5: | |
21132 | case DW_OP_reg6: | |
21133 | case DW_OP_reg7: | |
21134 | case DW_OP_reg8: | |
21135 | case DW_OP_reg9: | |
21136 | case DW_OP_reg10: | |
21137 | case DW_OP_reg11: | |
21138 | case DW_OP_reg12: | |
21139 | case DW_OP_reg13: | |
21140 | case DW_OP_reg14: | |
21141 | case DW_OP_reg15: | |
21142 | case DW_OP_reg16: | |
21143 | case DW_OP_reg17: | |
21144 | case DW_OP_reg18: | |
21145 | case DW_OP_reg19: | |
21146 | case DW_OP_reg20: | |
21147 | case DW_OP_reg21: | |
21148 | case DW_OP_reg22: | |
21149 | case DW_OP_reg23: | |
21150 | case DW_OP_reg24: | |
21151 | case DW_OP_reg25: | |
21152 | case DW_OP_reg26: | |
21153 | case DW_OP_reg27: | |
21154 | case DW_OP_reg28: | |
21155 | case DW_OP_reg29: | |
21156 | case DW_OP_reg30: | |
21157 | case DW_OP_reg31: | |
21158 | stack[++stacki] = op - DW_OP_reg0; | |
21159 | if (i < size) | |
21160 | dwarf2_complex_location_expr_complaint (); | |
21161 | break; | |
c906108c | 21162 | |
21ae7a4d JK |
21163 | case DW_OP_regx: |
21164 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
21165 | i += bytes_read; | |
21166 | stack[++stacki] = unsnd; | |
21167 | if (i < size) | |
21168 | dwarf2_complex_location_expr_complaint (); | |
21169 | break; | |
c906108c | 21170 | |
21ae7a4d JK |
21171 | case DW_OP_addr: |
21172 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
21173 | cu, &bytes_read); | |
21174 | i += bytes_read; | |
21175 | break; | |
d53d4ac5 | 21176 | |
21ae7a4d JK |
21177 | case DW_OP_const1u: |
21178 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
21179 | i += 1; | |
21180 | break; | |
21181 | ||
21182 | case DW_OP_const1s: | |
21183 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
21184 | i += 1; | |
21185 | break; | |
21186 | ||
21187 | case DW_OP_const2u: | |
21188 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
21189 | i += 2; | |
21190 | break; | |
21191 | ||
21192 | case DW_OP_const2s: | |
21193 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
21194 | i += 2; | |
21195 | break; | |
d53d4ac5 | 21196 | |
21ae7a4d JK |
21197 | case DW_OP_const4u: |
21198 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
21199 | i += 4; | |
21200 | break; | |
21201 | ||
21202 | case DW_OP_const4s: | |
21203 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
21204 | i += 4; | |
21205 | break; | |
21206 | ||
585861ea JK |
21207 | case DW_OP_const8u: |
21208 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
21209 | i += 8; | |
21210 | break; | |
21211 | ||
21ae7a4d JK |
21212 | case DW_OP_constu: |
21213 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
21214 | &bytes_read); | |
21215 | i += bytes_read; | |
21216 | break; | |
21217 | ||
21218 | case DW_OP_consts: | |
21219 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
21220 | i += bytes_read; | |
21221 | break; | |
21222 | ||
21223 | case DW_OP_dup: | |
21224 | stack[stacki + 1] = stack[stacki]; | |
21225 | stacki++; | |
21226 | break; | |
21227 | ||
21228 | case DW_OP_plus: | |
21229 | stack[stacki - 1] += stack[stacki]; | |
21230 | stacki--; | |
21231 | break; | |
21232 | ||
21233 | case DW_OP_plus_uconst: | |
21234 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
21235 | &bytes_read); | |
21236 | i += bytes_read; | |
21237 | break; | |
21238 | ||
21239 | case DW_OP_minus: | |
21240 | stack[stacki - 1] -= stack[stacki]; | |
21241 | stacki--; | |
21242 | break; | |
21243 | ||
21244 | case DW_OP_deref: | |
21245 | /* If we're not the last op, then we definitely can't encode | |
21246 | this using GDB's address_class enum. This is valid for partial | |
21247 | global symbols, although the variable's address will be bogus | |
21248 | in the psymtab. */ | |
21249 | if (i < size) | |
21250 | dwarf2_complex_location_expr_complaint (); | |
21251 | break; | |
21252 | ||
21253 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 21254 | case DW_OP_form_tls_address: |
21ae7a4d JK |
21255 | /* The top of the stack has the offset from the beginning |
21256 | of the thread control block at which the variable is located. */ | |
21257 | /* Nothing should follow this operator, so the top of stack would | |
21258 | be returned. */ | |
21259 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
21260 | address will be bogus in the psymtab. Make it always at least |
21261 | non-zero to not look as a variable garbage collected by linker | |
21262 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
21263 | if (i < size) |
21264 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 21265 | stack[stacki]++; |
21ae7a4d JK |
21266 | break; |
21267 | ||
21268 | case DW_OP_GNU_uninit: | |
21269 | break; | |
21270 | ||
3019eac3 | 21271 | case DW_OP_GNU_addr_index: |
49f6c839 | 21272 | case DW_OP_GNU_const_index: |
3019eac3 DE |
21273 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
21274 | &bytes_read); | |
21275 | i += bytes_read; | |
21276 | break; | |
21277 | ||
21ae7a4d JK |
21278 | default: |
21279 | { | |
f39c6ffd | 21280 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
21281 | |
21282 | if (name) | |
21283 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
21284 | name); | |
21285 | else | |
21286 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
21287 | op); | |
21288 | } | |
21289 | ||
21290 | return (stack[stacki]); | |
d53d4ac5 | 21291 | } |
3c6e0cb3 | 21292 | |
21ae7a4d JK |
21293 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
21294 | outside of the allocated space. Also enforce minimum>0. */ | |
21295 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
21296 | { | |
21297 | complaint (&symfile_complaints, | |
21298 | _("location description stack overflow")); | |
21299 | return 0; | |
21300 | } | |
21301 | ||
21302 | if (stacki <= 0) | |
21303 | { | |
21304 | complaint (&symfile_complaints, | |
21305 | _("location description stack underflow")); | |
21306 | return 0; | |
21307 | } | |
21308 | } | |
21309 | return (stack[stacki]); | |
c906108c SS |
21310 | } |
21311 | ||
21312 | /* memory allocation interface */ | |
21313 | ||
c906108c | 21314 | static struct dwarf_block * |
7b5a2f43 | 21315 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 21316 | { |
8d749320 | 21317 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
21318 | } |
21319 | ||
c906108c | 21320 | static struct die_info * |
b60c80d6 | 21321 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
21322 | { |
21323 | struct die_info *die; | |
b60c80d6 DJ |
21324 | size_t size = sizeof (struct die_info); |
21325 | ||
21326 | if (num_attrs > 1) | |
21327 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 21328 | |
b60c80d6 | 21329 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
21330 | memset (die, 0, sizeof (struct die_info)); |
21331 | return (die); | |
21332 | } | |
2e276125 JB |
21333 | |
21334 | \f | |
21335 | /* Macro support. */ | |
21336 | ||
233d95b5 JK |
21337 | /* Return file name relative to the compilation directory of file number I in |
21338 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 21339 | responsible for freeing it. */ |
233d95b5 | 21340 | |
2e276125 | 21341 | static char * |
233d95b5 | 21342 | file_file_name (int file, struct line_header *lh) |
2e276125 | 21343 | { |
6a83a1e6 EZ |
21344 | /* Is the file number a valid index into the line header's file name |
21345 | table? Remember that file numbers start with one, not zero. */ | |
21346 | if (1 <= file && file <= lh->num_file_names) | |
21347 | { | |
21348 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 21349 | |
afa6c9ab SL |
21350 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0 |
21351 | || lh->include_dirs == NULL) | |
6a83a1e6 | 21352 | return xstrdup (fe->name); |
233d95b5 | 21353 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
b36cec19 | 21354 | fe->name, (char *) NULL); |
6a83a1e6 | 21355 | } |
2e276125 JB |
21356 | else |
21357 | { | |
6a83a1e6 EZ |
21358 | /* The compiler produced a bogus file number. We can at least |
21359 | record the macro definitions made in the file, even if we | |
21360 | won't be able to find the file by name. */ | |
21361 | char fake_name[80]; | |
9a619af0 | 21362 | |
8c042590 PM |
21363 | xsnprintf (fake_name, sizeof (fake_name), |
21364 | "<bad macro file number %d>", file); | |
2e276125 | 21365 | |
6e70227d | 21366 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
21367 | _("bad file number in macro information (%d)"), |
21368 | file); | |
2e276125 | 21369 | |
6a83a1e6 | 21370 | return xstrdup (fake_name); |
2e276125 JB |
21371 | } |
21372 | } | |
21373 | ||
233d95b5 JK |
21374 | /* Return the full name of file number I in *LH's file name table. |
21375 | Use COMP_DIR as the name of the current directory of the | |
21376 | compilation. The result is allocated using xmalloc; the caller is | |
21377 | responsible for freeing it. */ | |
21378 | static char * | |
21379 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
21380 | { | |
21381 | /* Is the file number a valid index into the line header's file name | |
21382 | table? Remember that file numbers start with one, not zero. */ | |
21383 | if (1 <= file && file <= lh->num_file_names) | |
21384 | { | |
21385 | char *relative = file_file_name (file, lh); | |
21386 | ||
21387 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
21388 | return relative; | |
b36cec19 PA |
21389 | return reconcat (relative, comp_dir, SLASH_STRING, |
21390 | relative, (char *) NULL); | |
233d95b5 JK |
21391 | } |
21392 | else | |
21393 | return file_file_name (file, lh); | |
21394 | } | |
21395 | ||
2e276125 JB |
21396 | |
21397 | static struct macro_source_file * | |
21398 | macro_start_file (int file, int line, | |
21399 | struct macro_source_file *current_file, | |
43f3e411 | 21400 | struct line_header *lh) |
2e276125 | 21401 | { |
233d95b5 JK |
21402 | /* File name relative to the compilation directory of this source file. */ |
21403 | char *file_name = file_file_name (file, lh); | |
2e276125 | 21404 | |
2e276125 | 21405 | if (! current_file) |
abc9d0dc | 21406 | { |
fc474241 DE |
21407 | /* Note: We don't create a macro table for this compilation unit |
21408 | at all until we actually get a filename. */ | |
43f3e411 | 21409 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 21410 | |
abc9d0dc TT |
21411 | /* If we have no current file, then this must be the start_file |
21412 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
21413 | current_file = macro_set_main (macro_table, file_name); |
21414 | macro_define_special (macro_table); | |
abc9d0dc | 21415 | } |
2e276125 | 21416 | else |
233d95b5 | 21417 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 21418 | |
233d95b5 | 21419 | xfree (file_name); |
6e70227d | 21420 | |
2e276125 JB |
21421 | return current_file; |
21422 | } | |
21423 | ||
21424 | ||
21425 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
21426 | followed by a null byte. */ | |
21427 | static char * | |
21428 | copy_string (const char *buf, int len) | |
21429 | { | |
224c3ddb | 21430 | char *s = (char *) xmalloc (len + 1); |
9a619af0 | 21431 | |
2e276125 JB |
21432 | memcpy (s, buf, len); |
21433 | s[len] = '\0'; | |
2e276125 JB |
21434 | return s; |
21435 | } | |
21436 | ||
21437 | ||
21438 | static const char * | |
21439 | consume_improper_spaces (const char *p, const char *body) | |
21440 | { | |
21441 | if (*p == ' ') | |
21442 | { | |
4d3c2250 | 21443 | complaint (&symfile_complaints, |
3e43a32a MS |
21444 | _("macro definition contains spaces " |
21445 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 21446 | body); |
2e276125 JB |
21447 | |
21448 | while (*p == ' ') | |
21449 | p++; | |
21450 | } | |
21451 | ||
21452 | return p; | |
21453 | } | |
21454 | ||
21455 | ||
21456 | static void | |
21457 | parse_macro_definition (struct macro_source_file *file, int line, | |
21458 | const char *body) | |
21459 | { | |
21460 | const char *p; | |
21461 | ||
21462 | /* The body string takes one of two forms. For object-like macro | |
21463 | definitions, it should be: | |
21464 | ||
21465 | <macro name> " " <definition> | |
21466 | ||
21467 | For function-like macro definitions, it should be: | |
21468 | ||
21469 | <macro name> "() " <definition> | |
21470 | or | |
21471 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
21472 | ||
21473 | Spaces may appear only where explicitly indicated, and in the | |
21474 | <definition>. | |
21475 | ||
21476 | The Dwarf 2 spec says that an object-like macro's name is always | |
21477 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 21478 | the space when the macro's definition is the empty string. |
2e276125 JB |
21479 | |
21480 | The Dwarf 2 spec says that there should be no spaces between the | |
21481 | formal arguments in a function-like macro's formal argument list, | |
21482 | but versions of GCC around March 2002 include spaces after the | |
21483 | commas. */ | |
21484 | ||
21485 | ||
21486 | /* Find the extent of the macro name. The macro name is terminated | |
21487 | by either a space or null character (for an object-like macro) or | |
21488 | an opening paren (for a function-like macro). */ | |
21489 | for (p = body; *p; p++) | |
21490 | if (*p == ' ' || *p == '(') | |
21491 | break; | |
21492 | ||
21493 | if (*p == ' ' || *p == '\0') | |
21494 | { | |
21495 | /* It's an object-like macro. */ | |
21496 | int name_len = p - body; | |
21497 | char *name = copy_string (body, name_len); | |
21498 | const char *replacement; | |
21499 | ||
21500 | if (*p == ' ') | |
21501 | replacement = body + name_len + 1; | |
21502 | else | |
21503 | { | |
4d3c2250 | 21504 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21505 | replacement = body + name_len; |
21506 | } | |
6e70227d | 21507 | |
2e276125 JB |
21508 | macro_define_object (file, line, name, replacement); |
21509 | ||
21510 | xfree (name); | |
21511 | } | |
21512 | else if (*p == '(') | |
21513 | { | |
21514 | /* It's a function-like macro. */ | |
21515 | char *name = copy_string (body, p - body); | |
21516 | int argc = 0; | |
21517 | int argv_size = 1; | |
8d749320 | 21518 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
21519 | |
21520 | p++; | |
21521 | ||
21522 | p = consume_improper_spaces (p, body); | |
21523 | ||
21524 | /* Parse the formal argument list. */ | |
21525 | while (*p && *p != ')') | |
21526 | { | |
21527 | /* Find the extent of the current argument name. */ | |
21528 | const char *arg_start = p; | |
21529 | ||
21530 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
21531 | p++; | |
21532 | ||
21533 | if (! *p || p == arg_start) | |
4d3c2250 | 21534 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21535 | else |
21536 | { | |
21537 | /* Make sure argv has room for the new argument. */ | |
21538 | if (argc >= argv_size) | |
21539 | { | |
21540 | argv_size *= 2; | |
224c3ddb | 21541 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
21542 | } |
21543 | ||
21544 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
21545 | } | |
21546 | ||
21547 | p = consume_improper_spaces (p, body); | |
21548 | ||
21549 | /* Consume the comma, if present. */ | |
21550 | if (*p == ',') | |
21551 | { | |
21552 | p++; | |
21553 | ||
21554 | p = consume_improper_spaces (p, body); | |
21555 | } | |
21556 | } | |
21557 | ||
21558 | if (*p == ')') | |
21559 | { | |
21560 | p++; | |
21561 | ||
21562 | if (*p == ' ') | |
21563 | /* Perfectly formed definition, no complaints. */ | |
21564 | macro_define_function (file, line, name, | |
6e70227d | 21565 | argc, (const char **) argv, |
2e276125 JB |
21566 | p + 1); |
21567 | else if (*p == '\0') | |
21568 | { | |
21569 | /* Complain, but do define it. */ | |
4d3c2250 | 21570 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 21571 | macro_define_function (file, line, name, |
6e70227d | 21572 | argc, (const char **) argv, |
2e276125 JB |
21573 | p); |
21574 | } | |
21575 | else | |
21576 | /* Just complain. */ | |
4d3c2250 | 21577 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21578 | } |
21579 | else | |
21580 | /* Just complain. */ | |
4d3c2250 | 21581 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21582 | |
21583 | xfree (name); | |
21584 | { | |
21585 | int i; | |
21586 | ||
21587 | for (i = 0; i < argc; i++) | |
21588 | xfree (argv[i]); | |
21589 | } | |
21590 | xfree (argv); | |
21591 | } | |
21592 | else | |
4d3c2250 | 21593 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21594 | } |
21595 | ||
cf2c3c16 TT |
21596 | /* Skip some bytes from BYTES according to the form given in FORM. |
21597 | Returns the new pointer. */ | |
2e276125 | 21598 | |
d521ce57 TT |
21599 | static const gdb_byte * |
21600 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
21601 | enum dwarf_form form, |
21602 | unsigned int offset_size, | |
21603 | struct dwarf2_section_info *section) | |
2e276125 | 21604 | { |
cf2c3c16 | 21605 | unsigned int bytes_read; |
2e276125 | 21606 | |
cf2c3c16 | 21607 | switch (form) |
2e276125 | 21608 | { |
cf2c3c16 TT |
21609 | case DW_FORM_data1: |
21610 | case DW_FORM_flag: | |
21611 | ++bytes; | |
21612 | break; | |
21613 | ||
21614 | case DW_FORM_data2: | |
21615 | bytes += 2; | |
21616 | break; | |
21617 | ||
21618 | case DW_FORM_data4: | |
21619 | bytes += 4; | |
21620 | break; | |
21621 | ||
21622 | case DW_FORM_data8: | |
21623 | bytes += 8; | |
21624 | break; | |
21625 | ||
0224619f JK |
21626 | case DW_FORM_data16: |
21627 | bytes += 16; | |
21628 | break; | |
21629 | ||
cf2c3c16 TT |
21630 | case DW_FORM_string: |
21631 | read_direct_string (abfd, bytes, &bytes_read); | |
21632 | bytes += bytes_read; | |
21633 | break; | |
21634 | ||
21635 | case DW_FORM_sec_offset: | |
21636 | case DW_FORM_strp: | |
36586728 | 21637 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
21638 | bytes += offset_size; |
21639 | break; | |
21640 | ||
21641 | case DW_FORM_block: | |
21642 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
21643 | bytes += bytes_read; | |
21644 | break; | |
21645 | ||
21646 | case DW_FORM_block1: | |
21647 | bytes += 1 + read_1_byte (abfd, bytes); | |
21648 | break; | |
21649 | case DW_FORM_block2: | |
21650 | bytes += 2 + read_2_bytes (abfd, bytes); | |
21651 | break; | |
21652 | case DW_FORM_block4: | |
21653 | bytes += 4 + read_4_bytes (abfd, bytes); | |
21654 | break; | |
21655 | ||
21656 | case DW_FORM_sdata: | |
21657 | case DW_FORM_udata: | |
3019eac3 DE |
21658 | case DW_FORM_GNU_addr_index: |
21659 | case DW_FORM_GNU_str_index: | |
d521ce57 | 21660 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
21661 | if (bytes == NULL) |
21662 | { | |
21663 | dwarf2_section_buffer_overflow_complaint (section); | |
21664 | return NULL; | |
21665 | } | |
cf2c3c16 TT |
21666 | break; |
21667 | ||
21668 | default: | |
21669 | { | |
21670 | complain: | |
21671 | complaint (&symfile_complaints, | |
21672 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 21673 | form, get_section_name (section)); |
cf2c3c16 TT |
21674 | return NULL; |
21675 | } | |
2e276125 JB |
21676 | } |
21677 | ||
cf2c3c16 TT |
21678 | return bytes; |
21679 | } | |
757a13d0 | 21680 | |
cf2c3c16 TT |
21681 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
21682 | opcode. Returns an updated pointer to the macro data buffer; or, | |
21683 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 21684 | |
d521ce57 | 21685 | static const gdb_byte * |
cf2c3c16 | 21686 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
21687 | const gdb_byte **opcode_definitions, |
21688 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
21689 | bfd *abfd, |
21690 | unsigned int offset_size, | |
21691 | struct dwarf2_section_info *section) | |
21692 | { | |
21693 | unsigned int bytes_read, i; | |
21694 | unsigned long arg; | |
d521ce57 | 21695 | const gdb_byte *defn; |
2e276125 | 21696 | |
cf2c3c16 | 21697 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 21698 | { |
cf2c3c16 TT |
21699 | complaint (&symfile_complaints, |
21700 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
21701 | opcode); | |
21702 | return NULL; | |
21703 | } | |
2e276125 | 21704 | |
cf2c3c16 TT |
21705 | defn = opcode_definitions[opcode]; |
21706 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
21707 | defn += bytes_read; | |
2e276125 | 21708 | |
cf2c3c16 TT |
21709 | for (i = 0; i < arg; ++i) |
21710 | { | |
aead7601 SM |
21711 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
21712 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 21713 | section); |
cf2c3c16 TT |
21714 | if (mac_ptr == NULL) |
21715 | { | |
21716 | /* skip_form_bytes already issued the complaint. */ | |
21717 | return NULL; | |
21718 | } | |
21719 | } | |
757a13d0 | 21720 | |
cf2c3c16 TT |
21721 | return mac_ptr; |
21722 | } | |
757a13d0 | 21723 | |
cf2c3c16 TT |
21724 | /* A helper function which parses the header of a macro section. |
21725 | If the macro section is the extended (for now called "GNU") type, | |
21726 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
21727 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 21728 | |
d521ce57 TT |
21729 | static const gdb_byte * |
21730 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 21731 | bfd *abfd, |
d521ce57 | 21732 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
21733 | unsigned int *offset_size, |
21734 | int section_is_gnu) | |
21735 | { | |
21736 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 21737 | |
cf2c3c16 TT |
21738 | if (section_is_gnu) |
21739 | { | |
21740 | unsigned int version, flags; | |
757a13d0 | 21741 | |
cf2c3c16 | 21742 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 21743 | if (version != 4 && version != 5) |
cf2c3c16 TT |
21744 | { |
21745 | complaint (&symfile_complaints, | |
21746 | _("unrecognized version `%d' in .debug_macro section"), | |
21747 | version); | |
21748 | return NULL; | |
21749 | } | |
21750 | mac_ptr += 2; | |
757a13d0 | 21751 | |
cf2c3c16 TT |
21752 | flags = read_1_byte (abfd, mac_ptr); |
21753 | ++mac_ptr; | |
21754 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 21755 | |
cf2c3c16 TT |
21756 | if ((flags & 2) != 0) |
21757 | /* We don't need the line table offset. */ | |
21758 | mac_ptr += *offset_size; | |
757a13d0 | 21759 | |
cf2c3c16 TT |
21760 | /* Vendor opcode descriptions. */ |
21761 | if ((flags & 4) != 0) | |
21762 | { | |
21763 | unsigned int i, count; | |
757a13d0 | 21764 | |
cf2c3c16 TT |
21765 | count = read_1_byte (abfd, mac_ptr); |
21766 | ++mac_ptr; | |
21767 | for (i = 0; i < count; ++i) | |
21768 | { | |
21769 | unsigned int opcode, bytes_read; | |
21770 | unsigned long arg; | |
21771 | ||
21772 | opcode = read_1_byte (abfd, mac_ptr); | |
21773 | ++mac_ptr; | |
21774 | opcode_definitions[opcode] = mac_ptr; | |
21775 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21776 | mac_ptr += bytes_read; | |
21777 | mac_ptr += arg; | |
21778 | } | |
757a13d0 | 21779 | } |
cf2c3c16 | 21780 | } |
757a13d0 | 21781 | |
cf2c3c16 TT |
21782 | return mac_ptr; |
21783 | } | |
757a13d0 | 21784 | |
cf2c3c16 | 21785 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 21786 | including DW_MACRO_import. */ |
cf2c3c16 TT |
21787 | |
21788 | static void | |
d521ce57 TT |
21789 | dwarf_decode_macro_bytes (bfd *abfd, |
21790 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 21791 | struct macro_source_file *current_file, |
43f3e411 | 21792 | struct line_header *lh, |
cf2c3c16 | 21793 | struct dwarf2_section_info *section, |
36586728 | 21794 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 21795 | unsigned int offset_size, |
8fc3fc34 | 21796 | htab_t include_hash) |
cf2c3c16 | 21797 | { |
4d663531 | 21798 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
21799 | enum dwarf_macro_record_type macinfo_type; |
21800 | int at_commandline; | |
d521ce57 | 21801 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 21802 | |
cf2c3c16 TT |
21803 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
21804 | &offset_size, section_is_gnu); | |
21805 | if (mac_ptr == NULL) | |
21806 | { | |
21807 | /* We already issued a complaint. */ | |
21808 | return; | |
21809 | } | |
757a13d0 JK |
21810 | |
21811 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
21812 | GDB is still reading the definitions from command line. First | |
21813 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
21814 | to create CURRENT_FILE for the main source holding also the command line | |
21815 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
21816 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
21817 | ||
21818 | at_commandline = 1; | |
21819 | ||
21820 | do | |
21821 | { | |
21822 | /* Do we at least have room for a macinfo type byte? */ | |
21823 | if (mac_ptr >= mac_end) | |
21824 | { | |
f664829e | 21825 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
21826 | break; |
21827 | } | |
21828 | ||
aead7601 | 21829 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
21830 | mac_ptr++; |
21831 | ||
cf2c3c16 TT |
21832 | /* Note that we rely on the fact that the corresponding GNU and |
21833 | DWARF constants are the same. */ | |
757a13d0 JK |
21834 | switch (macinfo_type) |
21835 | { | |
21836 | /* A zero macinfo type indicates the end of the macro | |
21837 | information. */ | |
21838 | case 0: | |
21839 | break; | |
2e276125 | 21840 | |
0af92d60 JK |
21841 | case DW_MACRO_define: |
21842 | case DW_MACRO_undef: | |
21843 | case DW_MACRO_define_strp: | |
21844 | case DW_MACRO_undef_strp: | |
21845 | case DW_MACRO_define_sup: | |
21846 | case DW_MACRO_undef_sup: | |
2e276125 | 21847 | { |
891d2f0b | 21848 | unsigned int bytes_read; |
2e276125 | 21849 | int line; |
d521ce57 | 21850 | const char *body; |
cf2c3c16 | 21851 | int is_define; |
2e276125 | 21852 | |
cf2c3c16 TT |
21853 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
21854 | mac_ptr += bytes_read; | |
21855 | ||
0af92d60 JK |
21856 | if (macinfo_type == DW_MACRO_define |
21857 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
21858 | { |
21859 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
21860 | mac_ptr += bytes_read; | |
21861 | } | |
21862 | else | |
21863 | { | |
21864 | LONGEST str_offset; | |
21865 | ||
21866 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21867 | mac_ptr += offset_size; | |
2e276125 | 21868 | |
0af92d60 JK |
21869 | if (macinfo_type == DW_MACRO_define_sup |
21870 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 21871 | || section_is_dwz) |
36586728 TT |
21872 | { |
21873 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21874 | ||
21875 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
21876 | } | |
21877 | else | |
21878 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
21879 | } |
21880 | ||
0af92d60 JK |
21881 | is_define = (macinfo_type == DW_MACRO_define |
21882 | || macinfo_type == DW_MACRO_define_strp | |
21883 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 21884 | if (! current_file) |
757a13d0 JK |
21885 | { |
21886 | /* DWARF violation as no main source is present. */ | |
21887 | complaint (&symfile_complaints, | |
21888 | _("debug info with no main source gives macro %s " | |
21889 | "on line %d: %s"), | |
cf2c3c16 TT |
21890 | is_define ? _("definition") : _("undefinition"), |
21891 | line, body); | |
757a13d0 JK |
21892 | break; |
21893 | } | |
3e43a32a MS |
21894 | if ((line == 0 && !at_commandline) |
21895 | || (line != 0 && at_commandline)) | |
4d3c2250 | 21896 | complaint (&symfile_complaints, |
757a13d0 JK |
21897 | _("debug info gives %s macro %s with %s line %d: %s"), |
21898 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 21899 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
21900 | line == 0 ? _("zero") : _("non-zero"), line, body); |
21901 | ||
cf2c3c16 | 21902 | if (is_define) |
757a13d0 | 21903 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
21904 | else |
21905 | { | |
0af92d60 JK |
21906 | gdb_assert (macinfo_type == DW_MACRO_undef |
21907 | || macinfo_type == DW_MACRO_undef_strp | |
21908 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
21909 | macro_undef (current_file, line, body); |
21910 | } | |
2e276125 JB |
21911 | } |
21912 | break; | |
21913 | ||
0af92d60 | 21914 | case DW_MACRO_start_file: |
2e276125 | 21915 | { |
891d2f0b | 21916 | unsigned int bytes_read; |
2e276125 JB |
21917 | int line, file; |
21918 | ||
21919 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21920 | mac_ptr += bytes_read; | |
21921 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21922 | mac_ptr += bytes_read; | |
21923 | ||
3e43a32a MS |
21924 | if ((line == 0 && !at_commandline) |
21925 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
21926 | complaint (&symfile_complaints, |
21927 | _("debug info gives source %d included " | |
21928 | "from %s at %s line %d"), | |
21929 | file, at_commandline ? _("command-line") : _("file"), | |
21930 | line == 0 ? _("zero") : _("non-zero"), line); | |
21931 | ||
21932 | if (at_commandline) | |
21933 | { | |
0af92d60 | 21934 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 21935 | pass one. */ |
757a13d0 JK |
21936 | at_commandline = 0; |
21937 | } | |
21938 | else | |
43f3e411 | 21939 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
21940 | } |
21941 | break; | |
21942 | ||
0af92d60 | 21943 | case DW_MACRO_end_file: |
2e276125 | 21944 | if (! current_file) |
4d3c2250 | 21945 | complaint (&symfile_complaints, |
3e43a32a MS |
21946 | _("macro debug info has an unmatched " |
21947 | "`close_file' directive")); | |
2e276125 JB |
21948 | else |
21949 | { | |
21950 | current_file = current_file->included_by; | |
21951 | if (! current_file) | |
21952 | { | |
cf2c3c16 | 21953 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
21954 | |
21955 | /* GCC circa March 2002 doesn't produce the zero | |
21956 | type byte marking the end of the compilation | |
21957 | unit. Complain if it's not there, but exit no | |
21958 | matter what. */ | |
21959 | ||
21960 | /* Do we at least have room for a macinfo type byte? */ | |
21961 | if (mac_ptr >= mac_end) | |
21962 | { | |
f664829e | 21963 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
21964 | return; |
21965 | } | |
21966 | ||
21967 | /* We don't increment mac_ptr here, so this is just | |
21968 | a look-ahead. */ | |
aead7601 SM |
21969 | next_type |
21970 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
21971 | mac_ptr); | |
2e276125 | 21972 | if (next_type != 0) |
4d3c2250 | 21973 | complaint (&symfile_complaints, |
3e43a32a MS |
21974 | _("no terminating 0-type entry for " |
21975 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
21976 | |
21977 | return; | |
21978 | } | |
21979 | } | |
21980 | break; | |
21981 | ||
0af92d60 JK |
21982 | case DW_MACRO_import: |
21983 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
21984 | { |
21985 | LONGEST offset; | |
8fc3fc34 | 21986 | void **slot; |
a036ba48 TT |
21987 | bfd *include_bfd = abfd; |
21988 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 21989 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 21990 | int is_dwz = section_is_dwz; |
d521ce57 | 21991 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
21992 | |
21993 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21994 | mac_ptr += offset_size; | |
21995 | ||
0af92d60 | 21996 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 TT |
21997 | { |
21998 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21999 | ||
4d663531 | 22000 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 22001 | |
a036ba48 | 22002 | include_section = &dwz->macro; |
a32a8923 | 22003 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
22004 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
22005 | is_dwz = 1; | |
22006 | } | |
22007 | ||
22008 | new_mac_ptr = include_section->buffer + offset; | |
22009 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
22010 | ||
8fc3fc34 TT |
22011 | if (*slot != NULL) |
22012 | { | |
22013 | /* This has actually happened; see | |
22014 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
22015 | complaint (&symfile_complaints, | |
0af92d60 | 22016 | _("recursive DW_MACRO_import in " |
8fc3fc34 TT |
22017 | ".debug_macro section")); |
22018 | } | |
22019 | else | |
22020 | { | |
d521ce57 | 22021 | *slot = (void *) new_mac_ptr; |
36586728 | 22022 | |
a036ba48 | 22023 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
43f3e411 | 22024 | include_mac_end, current_file, lh, |
36586728 | 22025 | section, section_is_gnu, is_dwz, |
4d663531 | 22026 | offset_size, include_hash); |
8fc3fc34 | 22027 | |
d521ce57 | 22028 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 22029 | } |
cf2c3c16 TT |
22030 | } |
22031 | break; | |
22032 | ||
2e276125 | 22033 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
22034 | if (!section_is_gnu) |
22035 | { | |
22036 | unsigned int bytes_read; | |
2e276125 | 22037 | |
ac298888 TT |
22038 | /* This reads the constant, but since we don't recognize |
22039 | any vendor extensions, we ignore it. */ | |
22040 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
22041 | mac_ptr += bytes_read; |
22042 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
22043 | mac_ptr += bytes_read; | |
2e276125 | 22044 | |
cf2c3c16 TT |
22045 | /* We don't recognize any vendor extensions. */ |
22046 | break; | |
22047 | } | |
22048 | /* FALLTHROUGH */ | |
22049 | ||
22050 | default: | |
22051 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 22052 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
22053 | section); |
22054 | if (mac_ptr == NULL) | |
22055 | return; | |
22056 | break; | |
2e276125 | 22057 | } |
757a13d0 | 22058 | } while (macinfo_type != 0); |
2e276125 | 22059 | } |
8e19ed76 | 22060 | |
cf2c3c16 | 22061 | static void |
09262596 | 22062 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 22063 | int section_is_gnu) |
cf2c3c16 | 22064 | { |
bb5ed363 | 22065 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
22066 | struct line_header *lh = cu->line_header; |
22067 | bfd *abfd; | |
d521ce57 | 22068 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
22069 | struct macro_source_file *current_file = 0; |
22070 | enum dwarf_macro_record_type macinfo_type; | |
22071 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 22072 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 22073 | struct cleanup *cleanup; |
8fc3fc34 | 22074 | void **slot; |
09262596 DE |
22075 | struct dwarf2_section_info *section; |
22076 | const char *section_name; | |
22077 | ||
22078 | if (cu->dwo_unit != NULL) | |
22079 | { | |
22080 | if (section_is_gnu) | |
22081 | { | |
22082 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
22083 | section_name = ".debug_macro.dwo"; | |
22084 | } | |
22085 | else | |
22086 | { | |
22087 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
22088 | section_name = ".debug_macinfo.dwo"; | |
22089 | } | |
22090 | } | |
22091 | else | |
22092 | { | |
22093 | if (section_is_gnu) | |
22094 | { | |
22095 | section = &dwarf2_per_objfile->macro; | |
22096 | section_name = ".debug_macro"; | |
22097 | } | |
22098 | else | |
22099 | { | |
22100 | section = &dwarf2_per_objfile->macinfo; | |
22101 | section_name = ".debug_macinfo"; | |
22102 | } | |
22103 | } | |
cf2c3c16 | 22104 | |
bb5ed363 | 22105 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
22106 | if (section->buffer == NULL) |
22107 | { | |
fceca515 | 22108 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
22109 | return; |
22110 | } | |
a32a8923 | 22111 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
22112 | |
22113 | /* First pass: Find the name of the base filename. | |
22114 | This filename is needed in order to process all macros whose definition | |
22115 | (or undefinition) comes from the command line. These macros are defined | |
22116 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
22117 | associated to the base file. | |
22118 | ||
22119 | To determine the base file name, we scan the macro definitions until we | |
22120 | reach the first DW_MACINFO_start_file entry. We then initialize | |
22121 | CURRENT_FILE accordingly so that any macro definition found before the | |
22122 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
22123 | ||
22124 | mac_ptr = section->buffer + offset; | |
22125 | mac_end = section->buffer + section->size; | |
22126 | ||
22127 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
22128 | &offset_size, section_is_gnu); | |
22129 | if (mac_ptr == NULL) | |
22130 | { | |
22131 | /* We already issued a complaint. */ | |
22132 | return; | |
22133 | } | |
22134 | ||
22135 | do | |
22136 | { | |
22137 | /* Do we at least have room for a macinfo type byte? */ | |
22138 | if (mac_ptr >= mac_end) | |
22139 | { | |
22140 | /* Complaint is printed during the second pass as GDB will probably | |
22141 | stop the first pass earlier upon finding | |
22142 | DW_MACINFO_start_file. */ | |
22143 | break; | |
22144 | } | |
22145 | ||
aead7601 | 22146 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
22147 | mac_ptr++; |
22148 | ||
22149 | /* Note that we rely on the fact that the corresponding GNU and | |
22150 | DWARF constants are the same. */ | |
22151 | switch (macinfo_type) | |
22152 | { | |
22153 | /* A zero macinfo type indicates the end of the macro | |
22154 | information. */ | |
22155 | case 0: | |
22156 | break; | |
22157 | ||
0af92d60 JK |
22158 | case DW_MACRO_define: |
22159 | case DW_MACRO_undef: | |
cf2c3c16 TT |
22160 | /* Only skip the data by MAC_PTR. */ |
22161 | { | |
22162 | unsigned int bytes_read; | |
22163 | ||
22164 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22165 | mac_ptr += bytes_read; | |
22166 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
22167 | mac_ptr += bytes_read; | |
22168 | } | |
22169 | break; | |
22170 | ||
0af92d60 | 22171 | case DW_MACRO_start_file: |
cf2c3c16 TT |
22172 | { |
22173 | unsigned int bytes_read; | |
22174 | int line, file; | |
22175 | ||
22176 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22177 | mac_ptr += bytes_read; | |
22178 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22179 | mac_ptr += bytes_read; | |
22180 | ||
43f3e411 | 22181 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
22182 | } |
22183 | break; | |
22184 | ||
0af92d60 | 22185 | case DW_MACRO_end_file: |
cf2c3c16 TT |
22186 | /* No data to skip by MAC_PTR. */ |
22187 | break; | |
22188 | ||
0af92d60 JK |
22189 | case DW_MACRO_define_strp: |
22190 | case DW_MACRO_undef_strp: | |
22191 | case DW_MACRO_define_sup: | |
22192 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
22193 | { |
22194 | unsigned int bytes_read; | |
22195 | ||
22196 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22197 | mac_ptr += bytes_read; | |
22198 | mac_ptr += offset_size; | |
22199 | } | |
22200 | break; | |
22201 | ||
0af92d60 JK |
22202 | case DW_MACRO_import: |
22203 | case DW_MACRO_import_sup: | |
cf2c3c16 | 22204 | /* Note that, according to the spec, a transparent include |
0af92d60 | 22205 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
22206 | skip this opcode. */ |
22207 | mac_ptr += offset_size; | |
22208 | break; | |
22209 | ||
22210 | case DW_MACINFO_vendor_ext: | |
22211 | /* Only skip the data by MAC_PTR. */ | |
22212 | if (!section_is_gnu) | |
22213 | { | |
22214 | unsigned int bytes_read; | |
22215 | ||
22216 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22217 | mac_ptr += bytes_read; | |
22218 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
22219 | mac_ptr += bytes_read; | |
22220 | } | |
22221 | /* FALLTHROUGH */ | |
22222 | ||
22223 | default: | |
22224 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 22225 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
22226 | section); |
22227 | if (mac_ptr == NULL) | |
22228 | return; | |
22229 | break; | |
22230 | } | |
22231 | } while (macinfo_type != 0 && current_file == NULL); | |
22232 | ||
22233 | /* Second pass: Process all entries. | |
22234 | ||
22235 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
22236 | command-line macro definitions/undefinitions. This flag is unset when we | |
22237 | reach the first DW_MACINFO_start_file entry. */ | |
22238 | ||
fc4007c9 TT |
22239 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
22240 | htab_eq_pointer, | |
22241 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 22242 | mac_ptr = section->buffer + offset; |
fc4007c9 | 22243 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 22244 | *slot = (void *) mac_ptr; |
8fc3fc34 | 22245 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
43f3e411 | 22246 | current_file, lh, section, |
fc4007c9 TT |
22247 | section_is_gnu, 0, offset_size, |
22248 | include_hash.get ()); | |
cf2c3c16 TT |
22249 | } |
22250 | ||
8e19ed76 | 22251 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 22252 | if so return true else false. */ |
380bca97 | 22253 | |
8e19ed76 | 22254 | static int |
6e5a29e1 | 22255 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
22256 | { |
22257 | return (attr == NULL ? 0 : | |
22258 | attr->form == DW_FORM_block1 | |
22259 | || attr->form == DW_FORM_block2 | |
22260 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
22261 | || attr->form == DW_FORM_block |
22262 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 22263 | } |
4c2df51b | 22264 | |
c6a0999f JB |
22265 | /* Return non-zero if ATTR's value is a section offset --- classes |
22266 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
22267 | You may use DW_UNSND (attr) to retrieve such offsets. | |
22268 | ||
22269 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
22270 | may have a value that belongs to more than one of these classes; it | |
22271 | would be ambiguous if we did, because we use the same forms for all | |
22272 | of them. */ | |
380bca97 | 22273 | |
3690dd37 | 22274 | static int |
6e5a29e1 | 22275 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
22276 | { |
22277 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
22278 | || attr->form == DW_FORM_data8 |
22279 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
22280 | } |
22281 | ||
3690dd37 JB |
22282 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
22283 | zero otherwise. When this function returns true, you can apply | |
22284 | dwarf2_get_attr_constant_value to it. | |
22285 | ||
22286 | However, note that for some attributes you must check | |
22287 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
22288 | and DW_FORM_data8 are members of both the constant class, and of | |
22289 | the classes that contain offsets into other debug sections | |
22290 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
22291 | that, if an attribute's can be either a constant or one of the | |
22292 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
22293 | taken as section offsets, not constants. |
22294 | ||
22295 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
22296 | cannot handle that. */ | |
380bca97 | 22297 | |
3690dd37 | 22298 | static int |
6e5a29e1 | 22299 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
22300 | { |
22301 | switch (attr->form) | |
22302 | { | |
22303 | case DW_FORM_sdata: | |
22304 | case DW_FORM_udata: | |
22305 | case DW_FORM_data1: | |
22306 | case DW_FORM_data2: | |
22307 | case DW_FORM_data4: | |
22308 | case DW_FORM_data8: | |
22309 | return 1; | |
22310 | default: | |
22311 | return 0; | |
22312 | } | |
22313 | } | |
22314 | ||
7771576e SA |
22315 | |
22316 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
22317 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
22318 | ||
22319 | static int | |
6e5a29e1 | 22320 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
22321 | { |
22322 | switch (attr->form) | |
22323 | { | |
22324 | case DW_FORM_ref_addr: | |
22325 | case DW_FORM_ref1: | |
22326 | case DW_FORM_ref2: | |
22327 | case DW_FORM_ref4: | |
22328 | case DW_FORM_ref8: | |
22329 | case DW_FORM_ref_udata: | |
22330 | case DW_FORM_GNU_ref_alt: | |
22331 | return 1; | |
22332 | default: | |
22333 | return 0; | |
22334 | } | |
22335 | } | |
22336 | ||
3019eac3 DE |
22337 | /* Return the .debug_loc section to use for CU. |
22338 | For DWO files use .debug_loc.dwo. */ | |
22339 | ||
22340 | static struct dwarf2_section_info * | |
22341 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
22342 | { | |
22343 | if (cu->dwo_unit) | |
43988095 JK |
22344 | { |
22345 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
22346 | ||
22347 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
22348 | } | |
22349 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
22350 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
22351 | } |
22352 | ||
8cf6f0b1 TT |
22353 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
22354 | ||
22355 | static void | |
22356 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
22357 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 22358 | const struct attribute *attr) |
8cf6f0b1 | 22359 | { |
3019eac3 DE |
22360 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
22361 | ||
22362 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
22363 | |
22364 | baton->per_cu = cu->per_cu; | |
22365 | gdb_assert (baton->per_cu); | |
22366 | /* We don't know how long the location list is, but make sure we | |
22367 | don't run off the edge of the section. */ | |
3019eac3 DE |
22368 | baton->size = section->size - DW_UNSND (attr); |
22369 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 22370 | baton->base_address = cu->base_address; |
f664829e | 22371 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
22372 | } |
22373 | ||
4c2df51b | 22374 | static void |
ff39bb5e | 22375 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 22376 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 22377 | { |
bb5ed363 | 22378 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 22379 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 22380 | |
3690dd37 | 22381 | if (attr_form_is_section_offset (attr) |
3019eac3 | 22382 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
22383 | the section. If so, fall through to the complaint in the |
22384 | other branch. */ | |
3019eac3 | 22385 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 22386 | { |
0d53c4c4 | 22387 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 22388 | |
8d749320 | 22389 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 22390 | |
8cf6f0b1 | 22391 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 22392 | |
d00adf39 | 22393 | if (cu->base_known == 0) |
0d53c4c4 | 22394 | complaint (&symfile_complaints, |
3e43a32a MS |
22395 | _("Location list used without " |
22396 | "specifying the CU base address.")); | |
4c2df51b | 22397 | |
f1e6e072 TT |
22398 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22399 | ? dwarf2_loclist_block_index | |
22400 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
22401 | SYMBOL_LOCATION_BATON (sym) = baton; |
22402 | } | |
22403 | else | |
22404 | { | |
22405 | struct dwarf2_locexpr_baton *baton; | |
22406 | ||
8d749320 | 22407 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
22408 | baton->per_cu = cu->per_cu; |
22409 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
22410 | |
22411 | if (attr_form_is_block (attr)) | |
22412 | { | |
22413 | /* Note that we're just copying the block's data pointer | |
22414 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
22415 | info_buffer for SYM's objfile; right now we never release |
22416 | that buffer, but when we do clean up properly this may | |
22417 | need to change. */ | |
0d53c4c4 DJ |
22418 | baton->size = DW_BLOCK (attr)->size; |
22419 | baton->data = DW_BLOCK (attr)->data; | |
22420 | } | |
22421 | else | |
22422 | { | |
22423 | dwarf2_invalid_attrib_class_complaint ("location description", | |
22424 | SYMBOL_NATURAL_NAME (sym)); | |
22425 | baton->size = 0; | |
0d53c4c4 | 22426 | } |
6e70227d | 22427 | |
f1e6e072 TT |
22428 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22429 | ? dwarf2_locexpr_block_index | |
22430 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
22431 | SYMBOL_LOCATION_BATON (sym) = baton; |
22432 | } | |
4c2df51b | 22433 | } |
6502dd73 | 22434 | |
9aa1f1e3 TT |
22435 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
22436 | came from a separate debuginfo file, then the master objfile is | |
22437 | returned. */ | |
ae0d2f24 UW |
22438 | |
22439 | struct objfile * | |
22440 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
22441 | { | |
9291a0cd | 22442 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
22443 | |
22444 | /* Return the master objfile, so that we can report and look up the | |
22445 | correct file containing this variable. */ | |
22446 | if (objfile->separate_debug_objfile_backlink) | |
22447 | objfile = objfile->separate_debug_objfile_backlink; | |
22448 | ||
22449 | return objfile; | |
22450 | } | |
22451 | ||
96408a79 SA |
22452 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
22453 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
22454 | CU_HEADERP first. */ | |
22455 | ||
22456 | static const struct comp_unit_head * | |
22457 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
22458 | struct dwarf2_per_cu_data *per_cu) | |
22459 | { | |
d521ce57 | 22460 | const gdb_byte *info_ptr; |
96408a79 SA |
22461 | |
22462 | if (per_cu->cu) | |
22463 | return &per_cu->cu->header; | |
22464 | ||
8a0459fd | 22465 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
22466 | |
22467 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
22468 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
22469 | rcuh_kind::COMPILE); | |
96408a79 SA |
22470 | |
22471 | return cu_headerp; | |
22472 | } | |
22473 | ||
ae0d2f24 UW |
22474 | /* Return the address size given in the compilation unit header for CU. */ |
22475 | ||
98714339 | 22476 | int |
ae0d2f24 UW |
22477 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
22478 | { | |
96408a79 SA |
22479 | struct comp_unit_head cu_header_local; |
22480 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 22481 | |
96408a79 SA |
22482 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
22483 | ||
22484 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
22485 | } |
22486 | ||
9eae7c52 TT |
22487 | /* Return the offset size given in the compilation unit header for CU. */ |
22488 | ||
22489 | int | |
22490 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
22491 | { | |
96408a79 SA |
22492 | struct comp_unit_head cu_header_local; |
22493 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 22494 | |
96408a79 SA |
22495 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
22496 | ||
22497 | return cu_headerp->offset_size; | |
22498 | } | |
22499 | ||
22500 | /* See its dwarf2loc.h declaration. */ | |
22501 | ||
22502 | int | |
22503 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
22504 | { | |
22505 | struct comp_unit_head cu_header_local; | |
22506 | const struct comp_unit_head *cu_headerp; | |
22507 | ||
22508 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
22509 | ||
22510 | if (cu_headerp->version == 2) | |
22511 | return cu_headerp->addr_size; | |
22512 | else | |
22513 | return cu_headerp->offset_size; | |
181cebd4 JK |
22514 | } |
22515 | ||
9aa1f1e3 TT |
22516 | /* Return the text offset of the CU. The returned offset comes from |
22517 | this CU's objfile. If this objfile came from a separate debuginfo | |
22518 | file, then the offset may be different from the corresponding | |
22519 | offset in the parent objfile. */ | |
22520 | ||
22521 | CORE_ADDR | |
22522 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
22523 | { | |
bb3fa9d0 | 22524 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
22525 | |
22526 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
22527 | } | |
22528 | ||
43988095 JK |
22529 | /* Return DWARF version number of PER_CU. */ |
22530 | ||
22531 | short | |
22532 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
22533 | { | |
22534 | return per_cu->dwarf_version; | |
22535 | } | |
22536 | ||
348e048f DE |
22537 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
22538 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
22539 | |
22540 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 22541 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 22542 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
22543 | struct objfile *objfile) |
22544 | { | |
22545 | struct dwarf2_per_cu_data *this_cu; | |
22546 | int low, high; | |
36586728 | 22547 | const sect_offset *cu_off; |
ae038cb0 | 22548 | |
ae038cb0 DJ |
22549 | low = 0; |
22550 | high = dwarf2_per_objfile->n_comp_units - 1; | |
22551 | while (high > low) | |
22552 | { | |
36586728 | 22553 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 22554 | int mid = low + (high - low) / 2; |
9a619af0 | 22555 | |
36586728 TT |
22556 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
22557 | cu_off = &mid_cu->offset; | |
22558 | if (mid_cu->is_dwz > offset_in_dwz | |
22559 | || (mid_cu->is_dwz == offset_in_dwz | |
22560 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
22561 | high = mid; |
22562 | else | |
22563 | low = mid + 1; | |
22564 | } | |
22565 | gdb_assert (low == high); | |
36586728 TT |
22566 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
22567 | cu_off = &this_cu->offset; | |
22568 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 22569 | { |
36586728 | 22570 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
22571 | error (_("Dwarf Error: could not find partial DIE containing " |
22572 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 22573 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 22574 | |
b64f50a1 JK |
22575 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
22576 | <= offset.sect_off); | |
ae038cb0 DJ |
22577 | return dwarf2_per_objfile->all_comp_units[low-1]; |
22578 | } | |
22579 | else | |
22580 | { | |
22581 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
22582 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
22583 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
22584 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
22585 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
22586 | return this_cu; |
22587 | } | |
22588 | } | |
22589 | ||
23745b47 | 22590 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 22591 | |
9816fde3 | 22592 | static void |
23745b47 | 22593 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 22594 | { |
9816fde3 | 22595 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
22596 | per_cu->cu = cu; |
22597 | cu->per_cu = per_cu; | |
22598 | cu->objfile = per_cu->objfile; | |
93311388 | 22599 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
22600 | } |
22601 | ||
22602 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
22603 | ||
22604 | static void | |
95554aad TT |
22605 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
22606 | enum language pretend_language) | |
9816fde3 JK |
22607 | { |
22608 | struct attribute *attr; | |
22609 | ||
22610 | /* Set the language we're debugging. */ | |
22611 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
22612 | if (attr) | |
22613 | set_cu_language (DW_UNSND (attr), cu); | |
22614 | else | |
9cded63f | 22615 | { |
95554aad | 22616 | cu->language = pretend_language; |
9cded63f TT |
22617 | cu->language_defn = language_def (cu->language); |
22618 | } | |
dee91e82 | 22619 | |
7d45c7c3 | 22620 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
22621 | } |
22622 | ||
ae038cb0 DJ |
22623 | /* Release one cached compilation unit, CU. We unlink it from the tree |
22624 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
22625 | the caller is responsible for that. |
22626 | NOTE: DATA is a void * because this function is also used as a | |
22627 | cleanup routine. */ | |
ae038cb0 DJ |
22628 | |
22629 | static void | |
68dc6402 | 22630 | free_heap_comp_unit (void *data) |
ae038cb0 | 22631 | { |
9a3c8263 | 22632 | struct dwarf2_cu *cu = (struct dwarf2_cu *) data; |
ae038cb0 | 22633 | |
23745b47 DE |
22634 | gdb_assert (cu->per_cu != NULL); |
22635 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
22636 | cu->per_cu = NULL; |
22637 | ||
22638 | obstack_free (&cu->comp_unit_obstack, NULL); | |
22639 | ||
22640 | xfree (cu); | |
22641 | } | |
22642 | ||
72bf9492 | 22643 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 22644 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 22645 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
22646 | |
22647 | static void | |
22648 | free_stack_comp_unit (void *data) | |
22649 | { | |
9a3c8263 | 22650 | struct dwarf2_cu *cu = (struct dwarf2_cu *) data; |
72bf9492 | 22651 | |
23745b47 DE |
22652 | gdb_assert (cu->per_cu != NULL); |
22653 | cu->per_cu->cu = NULL; | |
22654 | cu->per_cu = NULL; | |
22655 | ||
72bf9492 DJ |
22656 | obstack_free (&cu->comp_unit_obstack, NULL); |
22657 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
22658 | } |
22659 | ||
22660 | /* Free all cached compilation units. */ | |
22661 | ||
22662 | static void | |
22663 | free_cached_comp_units (void *data) | |
22664 | { | |
22665 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22666 | ||
22667 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22668 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22669 | while (per_cu != NULL) | |
22670 | { | |
22671 | struct dwarf2_per_cu_data *next_cu; | |
22672 | ||
22673 | next_cu = per_cu->cu->read_in_chain; | |
22674 | ||
68dc6402 | 22675 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
22676 | *last_chain = next_cu; |
22677 | ||
22678 | per_cu = next_cu; | |
22679 | } | |
22680 | } | |
22681 | ||
22682 | /* Increase the age counter on each cached compilation unit, and free | |
22683 | any that are too old. */ | |
22684 | ||
22685 | static void | |
22686 | age_cached_comp_units (void) | |
22687 | { | |
22688 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22689 | ||
22690 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
22691 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22692 | while (per_cu != NULL) | |
22693 | { | |
22694 | per_cu->cu->last_used ++; | |
b4f54984 | 22695 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
22696 | dwarf2_mark (per_cu->cu); |
22697 | per_cu = per_cu->cu->read_in_chain; | |
22698 | } | |
22699 | ||
22700 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22701 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22702 | while (per_cu != NULL) | |
22703 | { | |
22704 | struct dwarf2_per_cu_data *next_cu; | |
22705 | ||
22706 | next_cu = per_cu->cu->read_in_chain; | |
22707 | ||
22708 | if (!per_cu->cu->mark) | |
22709 | { | |
68dc6402 | 22710 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
22711 | *last_chain = next_cu; |
22712 | } | |
22713 | else | |
22714 | last_chain = &per_cu->cu->read_in_chain; | |
22715 | ||
22716 | per_cu = next_cu; | |
22717 | } | |
22718 | } | |
22719 | ||
22720 | /* Remove a single compilation unit from the cache. */ | |
22721 | ||
22722 | static void | |
dee91e82 | 22723 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
22724 | { |
22725 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22726 | ||
22727 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22728 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22729 | while (per_cu != NULL) | |
22730 | { | |
22731 | struct dwarf2_per_cu_data *next_cu; | |
22732 | ||
22733 | next_cu = per_cu->cu->read_in_chain; | |
22734 | ||
dee91e82 | 22735 | if (per_cu == target_per_cu) |
ae038cb0 | 22736 | { |
68dc6402 | 22737 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 22738 | per_cu->cu = NULL; |
ae038cb0 DJ |
22739 | *last_chain = next_cu; |
22740 | break; | |
22741 | } | |
22742 | else | |
22743 | last_chain = &per_cu->cu->read_in_chain; | |
22744 | ||
22745 | per_cu = next_cu; | |
22746 | } | |
22747 | } | |
22748 | ||
fe3e1990 DJ |
22749 | /* Release all extra memory associated with OBJFILE. */ |
22750 | ||
22751 | void | |
22752 | dwarf2_free_objfile (struct objfile *objfile) | |
22753 | { | |
9a3c8263 SM |
22754 | dwarf2_per_objfile |
22755 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
22756 | dwarf2_objfile_data_key); | |
fe3e1990 DJ |
22757 | |
22758 | if (dwarf2_per_objfile == NULL) | |
22759 | return; | |
22760 | ||
22761 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
22762 | free_cached_comp_units (NULL); | |
22763 | ||
7b9f3c50 DE |
22764 | if (dwarf2_per_objfile->quick_file_names_table) |
22765 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 22766 | |
527f3840 JK |
22767 | if (dwarf2_per_objfile->line_header_hash) |
22768 | htab_delete (dwarf2_per_objfile->line_header_hash); | |
22769 | ||
fe3e1990 DJ |
22770 | /* Everything else should be on the objfile obstack. */ |
22771 | } | |
22772 | ||
dee91e82 DE |
22773 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
22774 | We store these in a hash table separate from the DIEs, and preserve them | |
22775 | when the DIEs are flushed out of cache. | |
22776 | ||
22777 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 22778 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
22779 | or the type may come from a DWO file. Furthermore, while it's more logical |
22780 | to use per_cu->section+offset, with Fission the section with the data is in | |
22781 | the DWO file but we don't know that section at the point we need it. | |
22782 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
22783 | because we can enter the lookup routine, get_die_type_at_offset, from | |
22784 | outside this file, and thus won't necessarily have PER_CU->cu. | |
22785 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 22786 | |
dee91e82 | 22787 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 22788 | { |
dee91e82 | 22789 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 22790 | sect_offset offset; |
1c379e20 DJ |
22791 | struct type *type; |
22792 | }; | |
22793 | ||
dee91e82 | 22794 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22795 | |
22796 | static hashval_t | |
dee91e82 | 22797 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 22798 | { |
9a3c8263 SM |
22799 | const struct dwarf2_per_cu_offset_and_type *ofs |
22800 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 22801 | |
dee91e82 | 22802 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
22803 | } |
22804 | ||
dee91e82 | 22805 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22806 | |
22807 | static int | |
dee91e82 | 22808 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 22809 | { |
9a3c8263 SM |
22810 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
22811 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
22812 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
22813 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 22814 | |
dee91e82 DE |
22815 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
22816 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
22817 | } |
22818 | ||
22819 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
22820 | table if necessary. For convenience, return TYPE. |
22821 | ||
22822 | The DIEs reading must have careful ordering to: | |
22823 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
22824 | reading current DIE. | |
22825 | * Not trying to dereference contents of still incompletely read in types | |
22826 | while reading in other DIEs. | |
22827 | * Enable referencing still incompletely read in types just by a pointer to | |
22828 | the type without accessing its fields. | |
22829 | ||
22830 | Therefore caller should follow these rules: | |
22831 | * Try to fetch any prerequisite types we may need to build this DIE type | |
22832 | before building the type and calling set_die_type. | |
e71ec853 | 22833 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
22834 | possible before fetching more types to complete the current type. |
22835 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 22836 | |
f792889a | 22837 | static struct type * |
1c379e20 DJ |
22838 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
22839 | { | |
dee91e82 | 22840 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 22841 | struct objfile *objfile = cu->objfile; |
3cdcd0ce JB |
22842 | struct attribute *attr; |
22843 | struct dynamic_prop prop; | |
1c379e20 | 22844 | |
b4ba55a1 JB |
22845 | /* For Ada types, make sure that the gnat-specific data is always |
22846 | initialized (if not already set). There are a few types where | |
22847 | we should not be doing so, because the type-specific area is | |
22848 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
22849 | where the type-specific area is used to store the floatformat). | |
22850 | But this is not a problem, because the gnat-specific information | |
22851 | is actually not needed for these types. */ | |
22852 | if (need_gnat_info (cu) | |
22853 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
22854 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
22855 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
22856 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
22857 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
22858 | && !HAVE_GNAT_AUX_INFO (type)) |
22859 | INIT_GNAT_SPECIFIC (type); | |
22860 | ||
3f2f83dd KB |
22861 | /* Read DW_AT_allocated and set in type. */ |
22862 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
22863 | if (attr_form_is_block (attr)) | |
22864 | { | |
22865 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
22866 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type, objfile); | |
22867 | } | |
22868 | else if (attr != NULL) | |
22869 | { | |
22870 | complaint (&symfile_complaints, | |
22871 | _("DW_AT_allocated has the wrong form (%s) at DIE 0x%x"), | |
22872 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), | |
22873 | die->offset.sect_off); | |
22874 | } | |
22875 | ||
22876 | /* Read DW_AT_associated and set in type. */ | |
22877 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
22878 | if (attr_form_is_block (attr)) | |
22879 | { | |
22880 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
22881 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type, objfile); | |
22882 | } | |
22883 | else if (attr != NULL) | |
22884 | { | |
22885 | complaint (&symfile_complaints, | |
22886 | _("DW_AT_associated has the wrong form (%s) at DIE 0x%x"), | |
22887 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), | |
22888 | die->offset.sect_off); | |
22889 | } | |
22890 | ||
3cdcd0ce JB |
22891 | /* Read DW_AT_data_location and set in type. */ |
22892 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
22893 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
93a8e227 | 22894 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type, objfile); |
3cdcd0ce | 22895 | |
dee91e82 | 22896 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22897 | { |
dee91e82 DE |
22898 | dwarf2_per_objfile->die_type_hash = |
22899 | htab_create_alloc_ex (127, | |
22900 | per_cu_offset_and_type_hash, | |
22901 | per_cu_offset_and_type_eq, | |
22902 | NULL, | |
22903 | &objfile->objfile_obstack, | |
22904 | hashtab_obstack_allocate, | |
22905 | dummy_obstack_deallocate); | |
f792889a | 22906 | } |
1c379e20 | 22907 | |
dee91e82 | 22908 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
22909 | ofs.offset = die->offset; |
22910 | ofs.type = type; | |
dee91e82 DE |
22911 | slot = (struct dwarf2_per_cu_offset_and_type **) |
22912 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
22913 | if (*slot) |
22914 | complaint (&symfile_complaints, | |
22915 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 22916 | die->offset.sect_off); |
8d749320 SM |
22917 | *slot = XOBNEW (&objfile->objfile_obstack, |
22918 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 22919 | **slot = ofs; |
f792889a | 22920 | return type; |
1c379e20 DJ |
22921 | } |
22922 | ||
02142a6c DE |
22923 | /* Look up the type for the die at OFFSET in PER_CU in die_type_hash, |
22924 | or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
22925 | |
22926 | static struct type * | |
b64f50a1 | 22927 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 22928 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 22929 | { |
dee91e82 | 22930 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 22931 | |
dee91e82 | 22932 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22933 | return NULL; |
1c379e20 | 22934 | |
dee91e82 | 22935 | ofs.per_cu = per_cu; |
673bfd45 | 22936 | ofs.offset = offset; |
9a3c8263 SM |
22937 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
22938 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
22939 | if (slot) |
22940 | return slot->type; | |
22941 | else | |
22942 | return NULL; | |
22943 | } | |
22944 | ||
02142a6c | 22945 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
22946 | or return NULL if DIE does not have a saved type. */ |
22947 | ||
22948 | static struct type * | |
22949 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
22950 | { | |
22951 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
22952 | } | |
22953 | ||
10b3939b DJ |
22954 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
22955 | ||
22956 | static void | |
22957 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
22958 | struct dwarf2_per_cu_data *ref_per_cu) | |
22959 | { | |
22960 | void **slot; | |
22961 | ||
22962 | if (cu->dependencies == NULL) | |
22963 | cu->dependencies | |
22964 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
22965 | NULL, &cu->comp_unit_obstack, | |
22966 | hashtab_obstack_allocate, | |
22967 | dummy_obstack_deallocate); | |
22968 | ||
22969 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
22970 | if (*slot == NULL) | |
22971 | *slot = ref_per_cu; | |
22972 | } | |
1c379e20 | 22973 | |
f504f079 DE |
22974 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
22975 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
22976 | cache that we must keep because we are keeping CU. */ |
22977 | ||
10b3939b DJ |
22978 | static int |
22979 | dwarf2_mark_helper (void **slot, void *data) | |
22980 | { | |
22981 | struct dwarf2_per_cu_data *per_cu; | |
22982 | ||
22983 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
22984 | |
22985 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
22986 | reading of the chain. As such dependencies remain valid it is not much | |
22987 | useful to track and undo them during QUIT cleanups. */ | |
22988 | if (per_cu->cu == NULL) | |
22989 | return 1; | |
22990 | ||
10b3939b DJ |
22991 | if (per_cu->cu->mark) |
22992 | return 1; | |
22993 | per_cu->cu->mark = 1; | |
22994 | ||
22995 | if (per_cu->cu->dependencies != NULL) | |
22996 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
22997 | ||
22998 | return 1; | |
22999 | } | |
23000 | ||
f504f079 DE |
23001 | /* Set the mark field in CU and in every other compilation unit in the |
23002 | cache that we must keep because we are keeping CU. */ | |
23003 | ||
ae038cb0 DJ |
23004 | static void |
23005 | dwarf2_mark (struct dwarf2_cu *cu) | |
23006 | { | |
23007 | if (cu->mark) | |
23008 | return; | |
23009 | cu->mark = 1; | |
10b3939b DJ |
23010 | if (cu->dependencies != NULL) |
23011 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
23012 | } |
23013 | ||
23014 | static void | |
23015 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
23016 | { | |
23017 | while (per_cu) | |
23018 | { | |
23019 | per_cu->cu->mark = 0; | |
23020 | per_cu = per_cu->cu->read_in_chain; | |
23021 | } | |
72bf9492 DJ |
23022 | } |
23023 | ||
72bf9492 DJ |
23024 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
23025 | is its offset in .debug_info for this objfile. */ | |
23026 | ||
23027 | static hashval_t | |
23028 | partial_die_hash (const void *item) | |
23029 | { | |
9a3c8263 SM |
23030 | const struct partial_die_info *part_die |
23031 | = (const struct partial_die_info *) item; | |
9a619af0 | 23032 | |
b64f50a1 | 23033 | return part_die->offset.sect_off; |
72bf9492 DJ |
23034 | } |
23035 | ||
23036 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23037 | are equal if they have the same offset. */ | |
23038 | ||
23039 | static int | |
23040 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23041 | { | |
9a3c8263 SM |
23042 | const struct partial_die_info *part_die_lhs |
23043 | = (const struct partial_die_info *) item_lhs; | |
23044 | const struct partial_die_info *part_die_rhs | |
23045 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 23046 | |
b64f50a1 | 23047 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
23048 | } |
23049 | ||
b4f54984 DE |
23050 | static struct cmd_list_element *set_dwarf_cmdlist; |
23051 | static struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
23052 | |
23053 | static void | |
b4f54984 | 23054 | set_dwarf_cmd (char *args, int from_tty) |
ae038cb0 | 23055 | { |
b4f54984 | 23056 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 23057 | gdb_stdout); |
ae038cb0 DJ |
23058 | } |
23059 | ||
23060 | static void | |
b4f54984 | 23061 | show_dwarf_cmd (char *args, int from_tty) |
6e70227d | 23062 | { |
b4f54984 | 23063 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
23064 | } |
23065 | ||
4bf44c1c | 23066 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
23067 | |
23068 | static void | |
c1bd65d0 | 23069 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc | 23070 | { |
9a3c8263 | 23071 | struct dwarf2_per_objfile *data = (struct dwarf2_per_objfile *) d; |
8b70b953 | 23072 | int ix; |
8b70b953 | 23073 | |
626f2d1c TT |
23074 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
23075 | cleaning up. */ | |
23076 | dwarf2_per_objfile = NULL; | |
23077 | ||
59b0c7c1 JB |
23078 | for (ix = 0; ix < data->n_comp_units; ++ix) |
23079 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 23080 | |
59b0c7c1 | 23081 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 23082 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
23083 | data->all_type_units[ix]->per_cu.imported_symtabs); |
23084 | xfree (data->all_type_units); | |
95554aad | 23085 | |
8b70b953 | 23086 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
23087 | |
23088 | if (data->dwo_files) | |
23089 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
23090 | if (data->dwp_file) |
23091 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
23092 | |
23093 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
23094 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
23095 | } |
23096 | ||
23097 | \f | |
ae2de4f8 | 23098 | /* The "save gdb-index" command. */ |
9291a0cd TT |
23099 | |
23100 | /* The contents of the hash table we create when building the string | |
23101 | table. */ | |
23102 | struct strtab_entry | |
23103 | { | |
23104 | offset_type offset; | |
23105 | const char *str; | |
23106 | }; | |
23107 | ||
559a7a62 JK |
23108 | /* Hash function for a strtab_entry. |
23109 | ||
23110 | Function is used only during write_hash_table so no index format backward | |
23111 | compatibility is needed. */ | |
b89be57b | 23112 | |
9291a0cd TT |
23113 | static hashval_t |
23114 | hash_strtab_entry (const void *e) | |
23115 | { | |
9a3c8263 | 23116 | const struct strtab_entry *entry = (const struct strtab_entry *) e; |
559a7a62 | 23117 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
23118 | } |
23119 | ||
23120 | /* Equality function for a strtab_entry. */ | |
b89be57b | 23121 | |
9291a0cd TT |
23122 | static int |
23123 | eq_strtab_entry (const void *a, const void *b) | |
23124 | { | |
9a3c8263 SM |
23125 | const struct strtab_entry *ea = (const struct strtab_entry *) a; |
23126 | const struct strtab_entry *eb = (const struct strtab_entry *) b; | |
9291a0cd TT |
23127 | return !strcmp (ea->str, eb->str); |
23128 | } | |
23129 | ||
23130 | /* Create a strtab_entry hash table. */ | |
b89be57b | 23131 | |
9291a0cd TT |
23132 | static htab_t |
23133 | create_strtab (void) | |
23134 | { | |
23135 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
23136 | xfree, xcalloc, xfree); | |
23137 | } | |
23138 | ||
23139 | /* Add a string to the constant pool. Return the string's offset in | |
23140 | host order. */ | |
b89be57b | 23141 | |
9291a0cd TT |
23142 | static offset_type |
23143 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
23144 | { | |
23145 | void **slot; | |
23146 | struct strtab_entry entry; | |
23147 | struct strtab_entry *result; | |
23148 | ||
23149 | entry.str = str; | |
23150 | slot = htab_find_slot (table, &entry, INSERT); | |
23151 | if (*slot) | |
9a3c8263 | 23152 | result = (struct strtab_entry *) *slot; |
9291a0cd TT |
23153 | else |
23154 | { | |
23155 | result = XNEW (struct strtab_entry); | |
23156 | result->offset = obstack_object_size (cpool); | |
23157 | result->str = str; | |
23158 | obstack_grow_str0 (cpool, str); | |
23159 | *slot = result; | |
23160 | } | |
23161 | return result->offset; | |
23162 | } | |
23163 | ||
23164 | /* An entry in the symbol table. */ | |
23165 | struct symtab_index_entry | |
23166 | { | |
23167 | /* The name of the symbol. */ | |
23168 | const char *name; | |
23169 | /* The offset of the name in the constant pool. */ | |
23170 | offset_type index_offset; | |
23171 | /* A sorted vector of the indices of all the CUs that hold an object | |
23172 | of this name. */ | |
23173 | VEC (offset_type) *cu_indices; | |
23174 | }; | |
23175 | ||
23176 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
23177 | struct mapped_symtab | |
23178 | { | |
23179 | offset_type n_elements; | |
23180 | offset_type size; | |
23181 | struct symtab_index_entry **data; | |
23182 | }; | |
23183 | ||
23184 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 23185 | |
9291a0cd TT |
23186 | static hashval_t |
23187 | hash_symtab_entry (const void *e) | |
23188 | { | |
9a3c8263 SM |
23189 | const struct symtab_index_entry *entry |
23190 | = (const struct symtab_index_entry *) e; | |
9291a0cd TT |
23191 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), |
23192 | sizeof (offset_type) * VEC_length (offset_type, | |
23193 | entry->cu_indices), | |
23194 | 0); | |
23195 | } | |
23196 | ||
23197 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 23198 | |
9291a0cd TT |
23199 | static int |
23200 | eq_symtab_entry (const void *a, const void *b) | |
23201 | { | |
9a3c8263 SM |
23202 | const struct symtab_index_entry *ea = (const struct symtab_index_entry *) a; |
23203 | const struct symtab_index_entry *eb = (const struct symtab_index_entry *) b; | |
9291a0cd TT |
23204 | int len = VEC_length (offset_type, ea->cu_indices); |
23205 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
23206 | return 0; | |
23207 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
23208 | VEC_address (offset_type, eb->cu_indices), | |
23209 | sizeof (offset_type) * len); | |
23210 | } | |
23211 | ||
23212 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 23213 | |
9291a0cd TT |
23214 | static void |
23215 | delete_symtab_entry (void *p) | |
23216 | { | |
9a3c8263 | 23217 | struct symtab_index_entry *entry = (struct symtab_index_entry *) p; |
9291a0cd TT |
23218 | VEC_free (offset_type, entry->cu_indices); |
23219 | xfree (entry); | |
23220 | } | |
23221 | ||
23222 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 23223 | |
9291a0cd | 23224 | static htab_t |
3876f04e | 23225 | create_symbol_hash_table (void) |
9291a0cd TT |
23226 | { |
23227 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
23228 | delete_symtab_entry, xcalloc, xfree); | |
23229 | } | |
23230 | ||
23231 | /* Create a new mapped symtab object. */ | |
b89be57b | 23232 | |
9291a0cd TT |
23233 | static struct mapped_symtab * |
23234 | create_mapped_symtab (void) | |
23235 | { | |
23236 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
23237 | symtab->n_elements = 0; | |
23238 | symtab->size = 1024; | |
23239 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
23240 | return symtab; | |
23241 | } | |
23242 | ||
23243 | /* Destroy a mapped_symtab. */ | |
b89be57b | 23244 | |
9291a0cd TT |
23245 | static void |
23246 | cleanup_mapped_symtab (void *p) | |
23247 | { | |
9a3c8263 | 23248 | struct mapped_symtab *symtab = (struct mapped_symtab *) p; |
9291a0cd TT |
23249 | /* The contents of the array are freed when the other hash table is |
23250 | destroyed. */ | |
23251 | xfree (symtab->data); | |
23252 | xfree (symtab); | |
23253 | } | |
23254 | ||
23255 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
23256 | the slot. |
23257 | ||
23258 | Function is used only during write_hash_table so no index format backward | |
23259 | compatibility is needed. */ | |
b89be57b | 23260 | |
9291a0cd TT |
23261 | static struct symtab_index_entry ** |
23262 | find_slot (struct mapped_symtab *symtab, const char *name) | |
23263 | { | |
559a7a62 | 23264 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
23265 | |
23266 | index = hash & (symtab->size - 1); | |
23267 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
23268 | ||
23269 | for (;;) | |
23270 | { | |
23271 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
23272 | return &symtab->data[index]; | |
23273 | index = (index + step) & (symtab->size - 1); | |
23274 | } | |
23275 | } | |
23276 | ||
23277 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 23278 | |
9291a0cd TT |
23279 | static void |
23280 | hash_expand (struct mapped_symtab *symtab) | |
23281 | { | |
23282 | offset_type old_size = symtab->size; | |
23283 | offset_type i; | |
23284 | struct symtab_index_entry **old_entries = symtab->data; | |
23285 | ||
23286 | symtab->size *= 2; | |
23287 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
23288 | ||
23289 | for (i = 0; i < old_size; ++i) | |
23290 | { | |
23291 | if (old_entries[i]) | |
23292 | { | |
23293 | struct symtab_index_entry **slot = find_slot (symtab, | |
23294 | old_entries[i]->name); | |
23295 | *slot = old_entries[i]; | |
23296 | } | |
23297 | } | |
23298 | ||
23299 | xfree (old_entries); | |
23300 | } | |
23301 | ||
156942c7 DE |
23302 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
23303 | CU_INDEX is the index of the CU in which the symbol appears. | |
23304 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 23305 | |
9291a0cd TT |
23306 | static void |
23307 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 23308 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
23309 | offset_type cu_index) |
23310 | { | |
23311 | struct symtab_index_entry **slot; | |
156942c7 | 23312 | offset_type cu_index_and_attrs; |
9291a0cd TT |
23313 | |
23314 | ++symtab->n_elements; | |
23315 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
23316 | hash_expand (symtab); | |
23317 | ||
23318 | slot = find_slot (symtab, name); | |
23319 | if (!*slot) | |
23320 | { | |
23321 | *slot = XNEW (struct symtab_index_entry); | |
23322 | (*slot)->name = name; | |
156942c7 | 23323 | /* index_offset is set later. */ |
9291a0cd TT |
23324 | (*slot)->cu_indices = NULL; |
23325 | } | |
156942c7 DE |
23326 | |
23327 | cu_index_and_attrs = 0; | |
23328 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
23329 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
23330 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
23331 | ||
23332 | /* We don't want to record an index value twice as we want to avoid the | |
23333 | duplication. | |
23334 | We process all global symbols and then all static symbols | |
23335 | (which would allow us to avoid the duplication by only having to check | |
23336 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
23337 | To keep things simple we don't worry about the duplication here and | |
23338 | sort and uniqufy the list after we've processed all symbols. */ | |
23339 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
23340 | } | |
23341 | ||
23342 | /* qsort helper routine for uniquify_cu_indices. */ | |
23343 | ||
23344 | static int | |
23345 | offset_type_compare (const void *ap, const void *bp) | |
23346 | { | |
23347 | offset_type a = *(offset_type *) ap; | |
23348 | offset_type b = *(offset_type *) bp; | |
23349 | ||
23350 | return (a > b) - (b > a); | |
23351 | } | |
23352 | ||
23353 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
23354 | ||
23355 | static void | |
23356 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
23357 | { | |
23358 | int i; | |
23359 | ||
23360 | for (i = 0; i < symtab->size; ++i) | |
23361 | { | |
23362 | struct symtab_index_entry *entry = symtab->data[i]; | |
23363 | ||
23364 | if (entry | |
23365 | && entry->cu_indices != NULL) | |
23366 | { | |
23367 | unsigned int next_to_insert, next_to_check; | |
23368 | offset_type last_value; | |
23369 | ||
23370 | qsort (VEC_address (offset_type, entry->cu_indices), | |
23371 | VEC_length (offset_type, entry->cu_indices), | |
23372 | sizeof (offset_type), offset_type_compare); | |
23373 | ||
23374 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
23375 | next_to_insert = 1; | |
23376 | for (next_to_check = 1; | |
23377 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
23378 | ++next_to_check) | |
23379 | { | |
23380 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
23381 | != last_value) | |
23382 | { | |
23383 | last_value = VEC_index (offset_type, entry->cu_indices, | |
23384 | next_to_check); | |
23385 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
23386 | last_value); | |
23387 | ++next_to_insert; | |
23388 | } | |
23389 | } | |
23390 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
23391 | } | |
23392 | } | |
9291a0cd TT |
23393 | } |
23394 | ||
23395 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 23396 | |
9291a0cd | 23397 | static offset_type |
3876f04e | 23398 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
23399 | struct symtab_index_entry *entry) |
23400 | { | |
23401 | void **slot; | |
23402 | ||
3876f04e | 23403 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
23404 | if (!*slot) |
23405 | { | |
23406 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
23407 | offset_type val = MAYBE_SWAP (len); | |
23408 | offset_type iter; | |
23409 | int i; | |
23410 | ||
23411 | *slot = entry; | |
23412 | entry->index_offset = obstack_object_size (cpool); | |
23413 | ||
23414 | obstack_grow (cpool, &val, sizeof (val)); | |
23415 | for (i = 0; | |
23416 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
23417 | ++i) | |
23418 | { | |
23419 | val = MAYBE_SWAP (iter); | |
23420 | obstack_grow (cpool, &val, sizeof (val)); | |
23421 | } | |
23422 | } | |
23423 | else | |
23424 | { | |
9a3c8263 SM |
23425 | struct symtab_index_entry *old_entry |
23426 | = (struct symtab_index_entry *) *slot; | |
9291a0cd TT |
23427 | entry->index_offset = old_entry->index_offset; |
23428 | entry = old_entry; | |
23429 | } | |
23430 | return entry->index_offset; | |
23431 | } | |
23432 | ||
23433 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
23434 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 23435 | |
9291a0cd TT |
23436 | static void |
23437 | write_hash_table (struct mapped_symtab *symtab, | |
23438 | struct obstack *output, struct obstack *cpool) | |
23439 | { | |
23440 | offset_type i; | |
3876f04e | 23441 | htab_t symbol_hash_table; |
9291a0cd TT |
23442 | htab_t str_table; |
23443 | ||
3876f04e | 23444 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 23445 | str_table = create_strtab (); |
3876f04e | 23446 | |
9291a0cd TT |
23447 | /* We add all the index vectors to the constant pool first, to |
23448 | ensure alignment is ok. */ | |
23449 | for (i = 0; i < symtab->size; ++i) | |
23450 | { | |
23451 | if (symtab->data[i]) | |
3876f04e | 23452 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
23453 | } |
23454 | ||
23455 | /* Now write out the hash table. */ | |
23456 | for (i = 0; i < symtab->size; ++i) | |
23457 | { | |
23458 | offset_type str_off, vec_off; | |
23459 | ||
23460 | if (symtab->data[i]) | |
23461 | { | |
23462 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
23463 | vec_off = symtab->data[i]->index_offset; | |
23464 | } | |
23465 | else | |
23466 | { | |
23467 | /* While 0 is a valid constant pool index, it is not valid | |
23468 | to have 0 for both offsets. */ | |
23469 | str_off = 0; | |
23470 | vec_off = 0; | |
23471 | } | |
23472 | ||
23473 | str_off = MAYBE_SWAP (str_off); | |
23474 | vec_off = MAYBE_SWAP (vec_off); | |
23475 | ||
23476 | obstack_grow (output, &str_off, sizeof (str_off)); | |
23477 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
23478 | } | |
23479 | ||
23480 | htab_delete (str_table); | |
3876f04e | 23481 | htab_delete (symbol_hash_table); |
9291a0cd TT |
23482 | } |
23483 | ||
0a5429f6 DE |
23484 | /* Struct to map psymtab to CU index in the index file. */ |
23485 | struct psymtab_cu_index_map | |
23486 | { | |
23487 | struct partial_symtab *psymtab; | |
23488 | unsigned int cu_index; | |
23489 | }; | |
23490 | ||
23491 | static hashval_t | |
23492 | hash_psymtab_cu_index (const void *item) | |
23493 | { | |
9a3c8263 SM |
23494 | const struct psymtab_cu_index_map *map |
23495 | = (const struct psymtab_cu_index_map *) item; | |
0a5429f6 DE |
23496 | |
23497 | return htab_hash_pointer (map->psymtab); | |
23498 | } | |
23499 | ||
23500 | static int | |
23501 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
23502 | { | |
9a3c8263 SM |
23503 | const struct psymtab_cu_index_map *lhs |
23504 | = (const struct psymtab_cu_index_map *) item_lhs; | |
23505 | const struct psymtab_cu_index_map *rhs | |
23506 | = (const struct psymtab_cu_index_map *) item_rhs; | |
0a5429f6 DE |
23507 | |
23508 | return lhs->psymtab == rhs->psymtab; | |
23509 | } | |
23510 | ||
23511 | /* Helper struct for building the address table. */ | |
23512 | struct addrmap_index_data | |
23513 | { | |
23514 | struct objfile *objfile; | |
23515 | struct obstack *addr_obstack; | |
23516 | htab_t cu_index_htab; | |
23517 | ||
23518 | /* Non-zero if the previous_* fields are valid. | |
23519 | We can't write an entry until we see the next entry (since it is only then | |
23520 | that we know the end of the entry). */ | |
23521 | int previous_valid; | |
23522 | /* Index of the CU in the table of all CUs in the index file. */ | |
23523 | unsigned int previous_cu_index; | |
0963b4bd | 23524 | /* Start address of the CU. */ |
0a5429f6 DE |
23525 | CORE_ADDR previous_cu_start; |
23526 | }; | |
23527 | ||
23528 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 23529 | |
9291a0cd | 23530 | static void |
0a5429f6 DE |
23531 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
23532 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 23533 | { |
0a5429f6 | 23534 | offset_type cu_index_to_write; |
948f8e3d | 23535 | gdb_byte addr[8]; |
9291a0cd TT |
23536 | CORE_ADDR baseaddr; |
23537 | ||
23538 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
23539 | ||
0a5429f6 DE |
23540 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
23541 | obstack_grow (obstack, addr, 8); | |
23542 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
23543 | obstack_grow (obstack, addr, 8); | |
23544 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
23545 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
23546 | } | |
23547 | ||
23548 | /* Worker function for traversing an addrmap to build the address table. */ | |
23549 | ||
23550 | static int | |
23551 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
23552 | { | |
9a3c8263 SM |
23553 | struct addrmap_index_data *data = (struct addrmap_index_data *) datap; |
23554 | struct partial_symtab *pst = (struct partial_symtab *) obj; | |
0a5429f6 DE |
23555 | |
23556 | if (data->previous_valid) | |
23557 | add_address_entry (data->objfile, data->addr_obstack, | |
23558 | data->previous_cu_start, start_addr, | |
23559 | data->previous_cu_index); | |
23560 | ||
23561 | data->previous_cu_start = start_addr; | |
23562 | if (pst != NULL) | |
23563 | { | |
23564 | struct psymtab_cu_index_map find_map, *map; | |
23565 | find_map.psymtab = pst; | |
9a3c8263 SM |
23566 | map = ((struct psymtab_cu_index_map *) |
23567 | htab_find (data->cu_index_htab, &find_map)); | |
0a5429f6 DE |
23568 | gdb_assert (map != NULL); |
23569 | data->previous_cu_index = map->cu_index; | |
23570 | data->previous_valid = 1; | |
23571 | } | |
23572 | else | |
23573 | data->previous_valid = 0; | |
23574 | ||
23575 | return 0; | |
23576 | } | |
23577 | ||
23578 | /* Write OBJFILE's address map to OBSTACK. | |
23579 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
23580 | in the index file. */ | |
23581 | ||
23582 | static void | |
23583 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
23584 | htab_t cu_index_htab) | |
23585 | { | |
23586 | struct addrmap_index_data addrmap_index_data; | |
23587 | ||
23588 | /* When writing the address table, we have to cope with the fact that | |
23589 | the addrmap iterator only provides the start of a region; we have to | |
23590 | wait until the next invocation to get the start of the next region. */ | |
23591 | ||
23592 | addrmap_index_data.objfile = objfile; | |
23593 | addrmap_index_data.addr_obstack = obstack; | |
23594 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
23595 | addrmap_index_data.previous_valid = 0; | |
23596 | ||
23597 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
23598 | &addrmap_index_data); | |
23599 | ||
23600 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
23601 | is valid, but we should still handle it. | |
23602 | The end address is recorded as the start of the next region, but that | |
23603 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
23604 | anyway. */ | |
23605 | if (addrmap_index_data.previous_valid) | |
23606 | add_address_entry (objfile, obstack, | |
23607 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
23608 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
23609 | } |
23610 | ||
156942c7 DE |
23611 | /* Return the symbol kind of PSYM. */ |
23612 | ||
23613 | static gdb_index_symbol_kind | |
23614 | symbol_kind (struct partial_symbol *psym) | |
23615 | { | |
23616 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
23617 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
23618 | ||
23619 | switch (domain) | |
23620 | { | |
23621 | case VAR_DOMAIN: | |
23622 | switch (aclass) | |
23623 | { | |
23624 | case LOC_BLOCK: | |
23625 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
23626 | case LOC_TYPEDEF: | |
23627 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
23628 | case LOC_COMPUTED: | |
23629 | case LOC_CONST_BYTES: | |
23630 | case LOC_OPTIMIZED_OUT: | |
23631 | case LOC_STATIC: | |
23632 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
23633 | case LOC_CONST: | |
23634 | /* Note: It's currently impossible to recognize psyms as enum values | |
23635 | short of reading the type info. For now punt. */ | |
23636 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
23637 | default: | |
23638 | /* There are other LOC_FOO values that one might want to classify | |
23639 | as variables, but dwarf2read.c doesn't currently use them. */ | |
23640 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
23641 | } | |
23642 | case STRUCT_DOMAIN: | |
23643 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
23644 | default: | |
23645 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
23646 | } | |
23647 | } | |
23648 | ||
9291a0cd | 23649 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 23650 | |
9291a0cd TT |
23651 | static void |
23652 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 23653 | htab_t psyms_seen, |
9291a0cd TT |
23654 | struct partial_symbol **psymp, |
23655 | int count, | |
987d643c TT |
23656 | offset_type cu_index, |
23657 | int is_static) | |
9291a0cd TT |
23658 | { |
23659 | for (; count-- > 0; ++psymp) | |
23660 | { | |
156942c7 DE |
23661 | struct partial_symbol *psym = *psymp; |
23662 | void **slot; | |
987d643c | 23663 | |
156942c7 | 23664 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 23665 | error (_("Ada is not currently supported by the index")); |
987d643c | 23666 | |
987d643c | 23667 | /* Only add a given psymbol once. */ |
156942c7 | 23668 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
23669 | if (!*slot) |
23670 | { | |
156942c7 DE |
23671 | gdb_index_symbol_kind kind = symbol_kind (psym); |
23672 | ||
23673 | *slot = psym; | |
23674 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
23675 | is_static, kind, cu_index); | |
987d643c | 23676 | } |
9291a0cd TT |
23677 | } |
23678 | } | |
23679 | ||
23680 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
23681 | exception if there is an error. */ | |
b89be57b | 23682 | |
9291a0cd TT |
23683 | static void |
23684 | write_obstack (FILE *file, struct obstack *obstack) | |
23685 | { | |
23686 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
23687 | file) | |
23688 | != obstack_object_size (obstack)) | |
23689 | error (_("couldn't data write to file")); | |
23690 | } | |
23691 | ||
1fd400ff TT |
23692 | /* A helper struct used when iterating over debug_types. */ |
23693 | struct signatured_type_index_data | |
23694 | { | |
23695 | struct objfile *objfile; | |
23696 | struct mapped_symtab *symtab; | |
23697 | struct obstack *types_list; | |
987d643c | 23698 | htab_t psyms_seen; |
1fd400ff TT |
23699 | int cu_index; |
23700 | }; | |
23701 | ||
23702 | /* A helper function that writes a single signatured_type to an | |
23703 | obstack. */ | |
b89be57b | 23704 | |
1fd400ff TT |
23705 | static int |
23706 | write_one_signatured_type (void **slot, void *d) | |
23707 | { | |
9a3c8263 SM |
23708 | struct signatured_type_index_data *info |
23709 | = (struct signatured_type_index_data *) d; | |
1fd400ff | 23710 | struct signatured_type *entry = (struct signatured_type *) *slot; |
0186c6a7 | 23711 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
23712 | gdb_byte val[8]; |
23713 | ||
23714 | write_psymbols (info->symtab, | |
987d643c | 23715 | info->psyms_seen, |
3e43a32a MS |
23716 | info->objfile->global_psymbols.list |
23717 | + psymtab->globals_offset, | |
987d643c TT |
23718 | psymtab->n_global_syms, info->cu_index, |
23719 | 0); | |
1fd400ff | 23720 | write_psymbols (info->symtab, |
987d643c | 23721 | info->psyms_seen, |
3e43a32a MS |
23722 | info->objfile->static_psymbols.list |
23723 | + psymtab->statics_offset, | |
987d643c TT |
23724 | psymtab->n_static_syms, info->cu_index, |
23725 | 1); | |
1fd400ff | 23726 | |
b64f50a1 JK |
23727 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23728 | entry->per_cu.offset.sect_off); | |
1fd400ff | 23729 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
23730 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23731 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
23732 | obstack_grow (info->types_list, val, 8); |
23733 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
23734 | obstack_grow (info->types_list, val, 8); | |
23735 | ||
23736 | ++info->cu_index; | |
23737 | ||
23738 | return 1; | |
23739 | } | |
23740 | ||
95554aad TT |
23741 | /* Recurse into all "included" dependencies and write their symbols as |
23742 | if they appeared in this psymtab. */ | |
23743 | ||
23744 | static void | |
23745 | recursively_write_psymbols (struct objfile *objfile, | |
23746 | struct partial_symtab *psymtab, | |
23747 | struct mapped_symtab *symtab, | |
23748 | htab_t psyms_seen, | |
23749 | offset_type cu_index) | |
23750 | { | |
23751 | int i; | |
23752 | ||
23753 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
23754 | if (psymtab->dependencies[i]->user != NULL) | |
23755 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
23756 | symtab, psyms_seen, cu_index); | |
23757 | ||
23758 | write_psymbols (symtab, | |
23759 | psyms_seen, | |
23760 | objfile->global_psymbols.list + psymtab->globals_offset, | |
23761 | psymtab->n_global_syms, cu_index, | |
23762 | 0); | |
23763 | write_psymbols (symtab, | |
23764 | psyms_seen, | |
23765 | objfile->static_psymbols.list + psymtab->statics_offset, | |
23766 | psymtab->n_static_syms, cu_index, | |
23767 | 1); | |
23768 | } | |
23769 | ||
9291a0cd | 23770 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 23771 | |
9291a0cd TT |
23772 | static void |
23773 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
23774 | { | |
23775 | struct cleanup *cleanup; | |
bef155c3 | 23776 | char *filename; |
1fd400ff TT |
23777 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
23778 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
23779 | int i; |
23780 | FILE *out_file; | |
23781 | struct mapped_symtab *symtab; | |
23782 | offset_type val, size_of_contents, total_len; | |
23783 | struct stat st; | |
0a5429f6 | 23784 | struct psymtab_cu_index_map *psymtab_cu_index_map; |
9291a0cd | 23785 | |
9291a0cd TT |
23786 | if (dwarf2_per_objfile->using_index) |
23787 | error (_("Cannot use an index to create the index")); | |
23788 | ||
8b70b953 TT |
23789 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
23790 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
23791 | ||
260b681b DE |
23792 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
23793 | return; | |
23794 | ||
4262abfb JK |
23795 | if (stat (objfile_name (objfile), &st) < 0) |
23796 | perror_with_name (objfile_name (objfile)); | |
9291a0cd | 23797 | |
4262abfb | 23798 | filename = concat (dir, SLASH_STRING, lbasename (objfile_name (objfile)), |
9291a0cd TT |
23799 | INDEX_SUFFIX, (char *) NULL); |
23800 | cleanup = make_cleanup (xfree, filename); | |
23801 | ||
614c279d | 23802 | out_file = gdb_fopen_cloexec (filename, "wb"); |
9291a0cd TT |
23803 | if (!out_file) |
23804 | error (_("Can't open `%s' for writing"), filename); | |
23805 | ||
bef155c3 | 23806 | gdb::unlinker unlink_file (filename); |
9291a0cd TT |
23807 | |
23808 | symtab = create_mapped_symtab (); | |
23809 | make_cleanup (cleanup_mapped_symtab, symtab); | |
23810 | ||
23811 | obstack_init (&addr_obstack); | |
23812 | make_cleanup_obstack_free (&addr_obstack); | |
23813 | ||
23814 | obstack_init (&cu_list); | |
23815 | make_cleanup_obstack_free (&cu_list); | |
23816 | ||
1fd400ff TT |
23817 | obstack_init (&types_cu_list); |
23818 | make_cleanup_obstack_free (&types_cu_list); | |
23819 | ||
fc4007c9 TT |
23820 | htab_up psyms_seen (htab_create_alloc (100, htab_hash_pointer, |
23821 | htab_eq_pointer, | |
23822 | NULL, xcalloc, xfree)); | |
987d643c | 23823 | |
0a5429f6 DE |
23824 | /* While we're scanning CU's create a table that maps a psymtab pointer |
23825 | (which is what addrmap records) to its index (which is what is recorded | |
23826 | in the index file). This will later be needed to write the address | |
23827 | table. */ | |
fc4007c9 TT |
23828 | htab_up cu_index_htab (htab_create_alloc (100, |
23829 | hash_psymtab_cu_index, | |
23830 | eq_psymtab_cu_index, | |
23831 | NULL, xcalloc, xfree)); | |
8d749320 SM |
23832 | psymtab_cu_index_map = XNEWVEC (struct psymtab_cu_index_map, |
23833 | dwarf2_per_objfile->n_comp_units); | |
0a5429f6 DE |
23834 | make_cleanup (xfree, psymtab_cu_index_map); |
23835 | ||
23836 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
23837 | work here. Also, the debug_types entries do not appear in |
23838 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
23839 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
23840 | { | |
3e43a32a MS |
23841 | struct dwarf2_per_cu_data *per_cu |
23842 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 23843 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 23844 | gdb_byte val[8]; |
0a5429f6 DE |
23845 | struct psymtab_cu_index_map *map; |
23846 | void **slot; | |
9291a0cd | 23847 | |
92fac807 JK |
23848 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
23849 | It may be referenced from a local scope but in such case it does not | |
23850 | need to be present in .gdb_index. */ | |
23851 | if (psymtab == NULL) | |
23852 | continue; | |
23853 | ||
95554aad | 23854 | if (psymtab->user == NULL) |
fc4007c9 TT |
23855 | recursively_write_psymbols (objfile, psymtab, symtab, |
23856 | psyms_seen.get (), i); | |
9291a0cd | 23857 | |
0a5429f6 DE |
23858 | map = &psymtab_cu_index_map[i]; |
23859 | map->psymtab = psymtab; | |
23860 | map->cu_index = i; | |
fc4007c9 | 23861 | slot = htab_find_slot (cu_index_htab.get (), map, INSERT); |
0a5429f6 DE |
23862 | gdb_assert (slot != NULL); |
23863 | gdb_assert (*slot == NULL); | |
23864 | *slot = map; | |
9291a0cd | 23865 | |
b64f50a1 JK |
23866 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23867 | per_cu->offset.sect_off); | |
9291a0cd | 23868 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 23869 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
23870 | obstack_grow (&cu_list, val, 8); |
23871 | } | |
23872 | ||
0a5429f6 | 23873 | /* Dump the address map. */ |
fc4007c9 | 23874 | write_address_map (objfile, &addr_obstack, cu_index_htab.get ()); |
0a5429f6 | 23875 | |
1fd400ff TT |
23876 | /* Write out the .debug_type entries, if any. */ |
23877 | if (dwarf2_per_objfile->signatured_types) | |
23878 | { | |
23879 | struct signatured_type_index_data sig_data; | |
23880 | ||
23881 | sig_data.objfile = objfile; | |
23882 | sig_data.symtab = symtab; | |
23883 | sig_data.types_list = &types_cu_list; | |
fc4007c9 | 23884 | sig_data.psyms_seen = psyms_seen.get (); |
1fd400ff TT |
23885 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
23886 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
23887 | write_one_signatured_type, &sig_data); | |
23888 | } | |
23889 | ||
156942c7 DE |
23890 | /* Now that we've processed all symbols we can shrink their cu_indices |
23891 | lists. */ | |
23892 | uniquify_cu_indices (symtab); | |
23893 | ||
9291a0cd TT |
23894 | obstack_init (&constant_pool); |
23895 | make_cleanup_obstack_free (&constant_pool); | |
23896 | obstack_init (&symtab_obstack); | |
23897 | make_cleanup_obstack_free (&symtab_obstack); | |
23898 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
23899 | ||
23900 | obstack_init (&contents); | |
23901 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 23902 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
23903 | total_len = size_of_contents; |
23904 | ||
23905 | /* The version number. */ | |
796a7ff8 | 23906 | val = MAYBE_SWAP (8); |
9291a0cd TT |
23907 | obstack_grow (&contents, &val, sizeof (val)); |
23908 | ||
23909 | /* The offset of the CU list from the start of the file. */ | |
23910 | val = MAYBE_SWAP (total_len); | |
23911 | obstack_grow (&contents, &val, sizeof (val)); | |
23912 | total_len += obstack_object_size (&cu_list); | |
23913 | ||
1fd400ff TT |
23914 | /* The offset of the types CU list from the start of the file. */ |
23915 | val = MAYBE_SWAP (total_len); | |
23916 | obstack_grow (&contents, &val, sizeof (val)); | |
23917 | total_len += obstack_object_size (&types_cu_list); | |
23918 | ||
9291a0cd TT |
23919 | /* The offset of the address table from the start of the file. */ |
23920 | val = MAYBE_SWAP (total_len); | |
23921 | obstack_grow (&contents, &val, sizeof (val)); | |
23922 | total_len += obstack_object_size (&addr_obstack); | |
23923 | ||
23924 | /* The offset of the symbol table from the start of the file. */ | |
23925 | val = MAYBE_SWAP (total_len); | |
23926 | obstack_grow (&contents, &val, sizeof (val)); | |
23927 | total_len += obstack_object_size (&symtab_obstack); | |
23928 | ||
23929 | /* The offset of the constant pool from the start of the file. */ | |
23930 | val = MAYBE_SWAP (total_len); | |
23931 | obstack_grow (&contents, &val, sizeof (val)); | |
23932 | total_len += obstack_object_size (&constant_pool); | |
23933 | ||
23934 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
23935 | ||
23936 | write_obstack (out_file, &contents); | |
23937 | write_obstack (out_file, &cu_list); | |
1fd400ff | 23938 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
23939 | write_obstack (out_file, &addr_obstack); |
23940 | write_obstack (out_file, &symtab_obstack); | |
23941 | write_obstack (out_file, &constant_pool); | |
23942 | ||
23943 | fclose (out_file); | |
23944 | ||
bef155c3 TT |
23945 | /* We want to keep the file. */ |
23946 | unlink_file.keep (); | |
9291a0cd TT |
23947 | |
23948 | do_cleanups (cleanup); | |
23949 | } | |
23950 | ||
90476074 TT |
23951 | /* Implementation of the `save gdb-index' command. |
23952 | ||
23953 | Note that the file format used by this command is documented in the | |
23954 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 23955 | |
9291a0cd TT |
23956 | static void |
23957 | save_gdb_index_command (char *arg, int from_tty) | |
23958 | { | |
23959 | struct objfile *objfile; | |
23960 | ||
23961 | if (!arg || !*arg) | |
96d19272 | 23962 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
23963 | |
23964 | ALL_OBJFILES (objfile) | |
23965 | { | |
23966 | struct stat st; | |
23967 | ||
23968 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 23969 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
23970 | continue; |
23971 | ||
9a3c8263 SM |
23972 | dwarf2_per_objfile |
23973 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
23974 | dwarf2_objfile_data_key); | |
9291a0cd TT |
23975 | if (dwarf2_per_objfile) |
23976 | { | |
9291a0cd | 23977 | |
492d29ea | 23978 | TRY |
9291a0cd TT |
23979 | { |
23980 | write_psymtabs_to_index (objfile, arg); | |
23981 | } | |
492d29ea PA |
23982 | CATCH (except, RETURN_MASK_ERROR) |
23983 | { | |
23984 | exception_fprintf (gdb_stderr, except, | |
23985 | _("Error while writing index for `%s': "), | |
23986 | objfile_name (objfile)); | |
23987 | } | |
23988 | END_CATCH | |
9291a0cd TT |
23989 | } |
23990 | } | |
dce234bc PP |
23991 | } |
23992 | ||
9291a0cd TT |
23993 | \f |
23994 | ||
b4f54984 | 23995 | int dwarf_always_disassemble; |
9eae7c52 TT |
23996 | |
23997 | static void | |
b4f54984 DE |
23998 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
23999 | struct cmd_list_element *c, const char *value) | |
9eae7c52 | 24000 | { |
3e43a32a MS |
24001 | fprintf_filtered (file, |
24002 | _("Whether to always disassemble " | |
24003 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
24004 | value); |
24005 | } | |
24006 | ||
900e11f9 JK |
24007 | static void |
24008 | show_check_physname (struct ui_file *file, int from_tty, | |
24009 | struct cmd_list_element *c, const char *value) | |
24010 | { | |
24011 | fprintf_filtered (file, | |
24012 | _("Whether to check \"physname\" is %s.\n"), | |
24013 | value); | |
24014 | } | |
24015 | ||
6502dd73 DJ |
24016 | void _initialize_dwarf2_read (void); |
24017 | ||
24018 | void | |
24019 | _initialize_dwarf2_read (void) | |
24020 | { | |
96d19272 JK |
24021 | struct cmd_list_element *c; |
24022 | ||
dce234bc | 24023 | dwarf2_objfile_data_key |
c1bd65d0 | 24024 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 24025 | |
b4f54984 DE |
24026 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
24027 | Set DWARF specific variables.\n\ | |
24028 | Configure DWARF variables such as the cache size"), | |
24029 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
ae038cb0 DJ |
24030 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
24031 | ||
b4f54984 DE |
24032 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
24033 | Show DWARF specific variables\n\ | |
24034 | Show DWARF variables such as the cache size"), | |
24035 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
ae038cb0 DJ |
24036 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
24037 | ||
24038 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
b4f54984 DE |
24039 | &dwarf_max_cache_age, _("\ |
24040 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
24041 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
7915a72c AC |
24042 | A higher limit means that cached compilation units will be stored\n\ |
24043 | in memory longer, and more total memory will be used. Zero disables\n\ | |
24044 | caching, which can slow down startup."), | |
2c5b56ce | 24045 | NULL, |
b4f54984 DE |
24046 | show_dwarf_max_cache_age, |
24047 | &set_dwarf_cmdlist, | |
24048 | &show_dwarf_cmdlist); | |
d97bc12b | 24049 | |
9eae7c52 | 24050 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
b4f54984 | 24051 | &dwarf_always_disassemble, _("\ |
9eae7c52 TT |
24052 | Set whether `info address' always disassembles DWARF expressions."), _("\ |
24053 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
24054 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
24055 | syntax. When disabled, expressions will be printed in a more\n\ | |
24056 | conversational style, when possible."), | |
24057 | NULL, | |
b4f54984 DE |
24058 | show_dwarf_always_disassemble, |
24059 | &set_dwarf_cmdlist, | |
24060 | &show_dwarf_cmdlist); | |
24061 | ||
24062 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ | |
24063 | Set debugging of the DWARF reader."), _("\ | |
24064 | Show debugging of the DWARF reader."), _("\ | |
24065 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
73be47f5 DE |
24066 | reading and symtab expansion. A value of 1 (one) provides basic\n\ |
24067 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
24068 | NULL, |
24069 | NULL, | |
24070 | &setdebuglist, &showdebuglist); | |
24071 | ||
b4f54984 DE |
24072 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
24073 | Set debugging of the DWARF DIE reader."), _("\ | |
24074 | Show debugging of the DWARF DIE reader."), _("\ | |
d97bc12b DE |
24075 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ |
24076 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
24077 | NULL, |
24078 | NULL, | |
24079 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24080 | |
27e0867f DE |
24081 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
24082 | Set debugging of the dwarf line reader."), _("\ | |
24083 | Show debugging of the dwarf line reader."), _("\ | |
24084 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
24085 | A value of 1 (one) provides basic information.\n\ | |
24086 | A value greater than 1 provides more verbose information."), | |
24087 | NULL, | |
24088 | NULL, | |
24089 | &setdebuglist, &showdebuglist); | |
24090 | ||
900e11f9 JK |
24091 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
24092 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
24093 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
24094 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
24095 | the demangler."), | |
24096 | NULL, show_check_physname, | |
24097 | &setdebuglist, &showdebuglist); | |
24098 | ||
e615022a DE |
24099 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
24100 | no_class, &use_deprecated_index_sections, _("\ | |
24101 | Set whether to use deprecated gdb_index sections."), _("\ | |
24102 | Show whether to use deprecated gdb_index sections."), _("\ | |
24103 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
24104 | Normally they are ignored either because of a missing feature or\n\ | |
24105 | performance issue.\n\ | |
24106 | Warning: This option must be enabled before gdb reads the file."), | |
24107 | NULL, | |
24108 | NULL, | |
24109 | &setlist, &showlist); | |
24110 | ||
96d19272 | 24111 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 24112 | _("\ |
fc1a9d6e | 24113 | Save a gdb-index file.\n\ |
11570e71 | 24114 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
24115 | &save_cmdlist); |
24116 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
24117 | |
24118 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24119 | &dwarf2_locexpr_funcs); | |
24120 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24121 | &dwarf2_loclist_funcs); | |
24122 | ||
24123 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24124 | &dwarf2_block_frame_base_locexpr_funcs); | |
24125 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24126 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 24127 | } |