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" |
4c2df51b | 73 | |
c906108c | 74 | #include <fcntl.h> |
c906108c | 75 | #include <sys/types.h> |
325fac50 | 76 | #include <algorithm> |
d8151005 | 77 | |
34eaf542 TT |
78 | typedef struct symbol *symbolp; |
79 | DEF_VEC_P (symbolp); | |
80 | ||
73be47f5 DE |
81 | /* When == 1, print basic high level tracing messages. |
82 | When > 1, be more verbose. | |
b4f54984 DE |
83 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
84 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 85 | |
d97bc12b | 86 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 87 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 88 | |
27e0867f DE |
89 | /* When non-zero, dump line number entries as they are read in. */ |
90 | static unsigned int dwarf_line_debug = 0; | |
91 | ||
900e11f9 JK |
92 | /* When non-zero, cross-check physname against demangler. */ |
93 | static int check_physname = 0; | |
94 | ||
481860b3 | 95 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 96 | static int use_deprecated_index_sections = 0; |
481860b3 | 97 | |
6502dd73 DJ |
98 | static const struct objfile_data *dwarf2_objfile_data_key; |
99 | ||
f1e6e072 TT |
100 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
101 | ||
102 | static int dwarf2_locexpr_index; | |
103 | static int dwarf2_loclist_index; | |
104 | static int dwarf2_locexpr_block_index; | |
105 | static int dwarf2_loclist_block_index; | |
106 | ||
73869dc2 DE |
107 | /* A descriptor for dwarf sections. |
108 | ||
109 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
110 | scanned. BUFFER, READIN are filled in later when the section is read. | |
111 | If the section contained compressed data then SIZE is updated to record | |
112 | the uncompressed size of the section. | |
113 | ||
114 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
115 | creating the concept of virtual sections contained within a real section. | |
116 | In DWP V2 the sections of the input DWO files are concatenated together | |
117 | into one section, but section offsets are kept relative to the original | |
118 | input section. | |
119 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
120 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
121 | describe the virtual section. */ | |
122 | ||
dce234bc PP |
123 | struct dwarf2_section_info |
124 | { | |
73869dc2 DE |
125 | union |
126 | { | |
e5aa3347 | 127 | /* If this is a real section, the bfd section. */ |
049412e3 | 128 | asection *section; |
73869dc2 | 129 | /* If this is a virtual section, pointer to the containing ("real") |
e5aa3347 | 130 | section. */ |
73869dc2 DE |
131 | struct dwarf2_section_info *containing_section; |
132 | } s; | |
19ac8c2e | 133 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 134 | const gdb_byte *buffer; |
73869dc2 | 135 | /* The size of the section, real or virtual. */ |
dce234bc | 136 | bfd_size_type size; |
73869dc2 DE |
137 | /* If this is a virtual section, the offset in the real section. |
138 | Only valid if is_virtual. */ | |
139 | bfd_size_type virtual_offset; | |
be391dca | 140 | /* True if we have tried to read this section. */ |
73869dc2 DE |
141 | char readin; |
142 | /* True if this is a virtual section, False otherwise. | |
049412e3 | 143 | This specifies which of s.section and s.containing_section to use. */ |
73869dc2 | 144 | char is_virtual; |
dce234bc PP |
145 | }; |
146 | ||
8b70b953 TT |
147 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
148 | DEF_VEC_O (dwarf2_section_info_def); | |
149 | ||
9291a0cd TT |
150 | /* All offsets in the index are of this type. It must be |
151 | architecture-independent. */ | |
152 | typedef uint32_t offset_type; | |
153 | ||
154 | DEF_VEC_I (offset_type); | |
155 | ||
156942c7 DE |
156 | /* Ensure only legit values are used. */ |
157 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
158 | do { \ | |
159 | gdb_assert ((unsigned int) (value) <= 1); \ | |
160 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
161 | } while (0) | |
162 | ||
163 | /* Ensure only legit values are used. */ | |
164 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
165 | do { \ | |
166 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
167 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
168 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
169 | } while (0) | |
170 | ||
171 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
172 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
173 | do { \ | |
174 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
175 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
176 | } while (0) | |
177 | ||
9291a0cd TT |
178 | /* A description of the mapped index. The file format is described in |
179 | a comment by the code that writes the index. */ | |
180 | struct mapped_index | |
181 | { | |
559a7a62 JK |
182 | /* Index data format version. */ |
183 | int version; | |
184 | ||
9291a0cd TT |
185 | /* The total length of the buffer. */ |
186 | off_t total_size; | |
b11b1f88 | 187 | |
9291a0cd TT |
188 | /* A pointer to the address table data. */ |
189 | const gdb_byte *address_table; | |
b11b1f88 | 190 | |
9291a0cd TT |
191 | /* Size of the address table data in bytes. */ |
192 | offset_type address_table_size; | |
b11b1f88 | 193 | |
3876f04e DE |
194 | /* The symbol table, implemented as a hash table. */ |
195 | const offset_type *symbol_table; | |
b11b1f88 | 196 | |
9291a0cd | 197 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 198 | offset_type symbol_table_slots; |
b11b1f88 | 199 | |
9291a0cd TT |
200 | /* A pointer to the constant pool. */ |
201 | const char *constant_pool; | |
202 | }; | |
203 | ||
95554aad TT |
204 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
205 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
206 | ||
52059ffd TT |
207 | struct tu_stats |
208 | { | |
209 | int nr_uniq_abbrev_tables; | |
210 | int nr_symtabs; | |
211 | int nr_symtab_sharers; | |
212 | int nr_stmt_less_type_units; | |
213 | int nr_all_type_units_reallocs; | |
214 | }; | |
215 | ||
9cdd5dbd DE |
216 | /* Collection of data recorded per objfile. |
217 | This hangs off of dwarf2_objfile_data_key. */ | |
218 | ||
6502dd73 DJ |
219 | struct dwarf2_per_objfile |
220 | { | |
dce234bc PP |
221 | struct dwarf2_section_info info; |
222 | struct dwarf2_section_info abbrev; | |
223 | struct dwarf2_section_info line; | |
dce234bc | 224 | struct dwarf2_section_info loc; |
43988095 | 225 | struct dwarf2_section_info loclists; |
dce234bc | 226 | struct dwarf2_section_info macinfo; |
cf2c3c16 | 227 | struct dwarf2_section_info macro; |
dce234bc | 228 | struct dwarf2_section_info str; |
43988095 | 229 | struct dwarf2_section_info line_str; |
dce234bc | 230 | struct dwarf2_section_info ranges; |
43988095 | 231 | struct dwarf2_section_info rnglists; |
3019eac3 | 232 | struct dwarf2_section_info addr; |
dce234bc PP |
233 | struct dwarf2_section_info frame; |
234 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 235 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 236 | |
8b70b953 TT |
237 | VEC (dwarf2_section_info_def) *types; |
238 | ||
be391dca TT |
239 | /* Back link. */ |
240 | struct objfile *objfile; | |
241 | ||
d467dd73 | 242 | /* Table of all the compilation units. This is used to locate |
10b3939b | 243 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
244 | struct dwarf2_per_cu_data **all_comp_units; |
245 | ||
246 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
247 | int n_comp_units; | |
248 | ||
1fd400ff | 249 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 250 | int n_type_units; |
1fd400ff | 251 | |
6aa5f3a6 DE |
252 | /* The number of elements allocated in all_type_units. |
253 | If there are skeleton-less TUs, we add them to all_type_units lazily. */ | |
254 | int n_allocated_type_units; | |
255 | ||
a2ce51a0 DE |
256 | /* The .debug_types-related CUs (TUs). |
257 | This is stored in malloc space because we may realloc it. */ | |
b4dd5633 | 258 | struct signatured_type **all_type_units; |
1fd400ff | 259 | |
f4dc4d17 DE |
260 | /* Table of struct type_unit_group objects. |
261 | The hash key is the DW_AT_stmt_list value. */ | |
262 | htab_t type_unit_groups; | |
72dca2f5 | 263 | |
348e048f DE |
264 | /* A table mapping .debug_types signatures to its signatured_type entry. |
265 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
266 | htab_t signatured_types; | |
267 | ||
f4dc4d17 DE |
268 | /* Type unit statistics, to see how well the scaling improvements |
269 | are doing. */ | |
52059ffd | 270 | struct tu_stats tu_stats; |
f4dc4d17 DE |
271 | |
272 | /* A chain of compilation units that are currently read in, so that | |
273 | they can be freed later. */ | |
274 | struct dwarf2_per_cu_data *read_in_chain; | |
275 | ||
3019eac3 DE |
276 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
277 | This is NULL if the table hasn't been allocated yet. */ | |
278 | htab_t dwo_files; | |
279 | ||
80626a55 DE |
280 | /* Non-zero if we've check for whether there is a DWP file. */ |
281 | int dwp_checked; | |
282 | ||
283 | /* The DWP file if there is one, or NULL. */ | |
284 | struct dwp_file *dwp_file; | |
285 | ||
36586728 TT |
286 | /* The shared '.dwz' file, if one exists. This is used when the |
287 | original data was compressed using 'dwz -m'. */ | |
288 | struct dwz_file *dwz_file; | |
289 | ||
72dca2f5 FR |
290 | /* A flag indicating wether this objfile has a section loaded at a |
291 | VMA of 0. */ | |
292 | int has_section_at_zero; | |
9291a0cd | 293 | |
ae2de4f8 DE |
294 | /* True if we are using the mapped index, |
295 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
296 | unsigned char using_index; |
297 | ||
ae2de4f8 | 298 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 299 | struct mapped_index *index_table; |
98bfdba5 | 300 | |
7b9f3c50 | 301 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
302 | TUs typically share line table entries with a CU, so we maintain a |
303 | separate table of all line table entries to support the sharing. | |
304 | Note that while there can be way more TUs than CUs, we've already | |
305 | sorted all the TUs into "type unit groups", grouped by their | |
306 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
307 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
308 | htab_t quick_file_names_table; |
309 | ||
98bfdba5 PA |
310 | /* Set during partial symbol reading, to prevent queueing of full |
311 | symbols. */ | |
312 | int reading_partial_symbols; | |
673bfd45 | 313 | |
dee91e82 | 314 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 315 | This is NULL if not allocated yet. |
02142a6c | 316 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
dee91e82 | 317 | htab_t die_type_hash; |
95554aad TT |
318 | |
319 | /* The CUs we recently read. */ | |
320 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
527f3840 JK |
321 | |
322 | /* Table containing line_header indexed by offset and offset_in_dwz. */ | |
323 | htab_t line_header_hash; | |
6502dd73 DJ |
324 | }; |
325 | ||
326 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 327 | |
251d32d9 | 328 | /* Default names of the debugging sections. */ |
c906108c | 329 | |
233a11ab CS |
330 | /* Note that if the debugging section has been compressed, it might |
331 | have a name like .zdebug_info. */ | |
332 | ||
9cdd5dbd DE |
333 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
334 | { | |
251d32d9 TG |
335 | { ".debug_info", ".zdebug_info" }, |
336 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
337 | { ".debug_line", ".zdebug_line" }, | |
338 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 339 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 340 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 341 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 342 | { ".debug_str", ".zdebug_str" }, |
43988095 | 343 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 344 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 345 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 346 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 347 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
348 | { ".debug_frame", ".zdebug_frame" }, |
349 | { ".eh_frame", NULL }, | |
24d3216f TT |
350 | { ".gdb_index", ".zgdb_index" }, |
351 | 23 | |
251d32d9 | 352 | }; |
c906108c | 353 | |
80626a55 | 354 | /* List of DWO/DWP sections. */ |
3019eac3 | 355 | |
80626a55 | 356 | static const struct dwop_section_names |
3019eac3 DE |
357 | { |
358 | struct dwarf2_section_names abbrev_dwo; | |
359 | struct dwarf2_section_names info_dwo; | |
360 | struct dwarf2_section_names line_dwo; | |
361 | struct dwarf2_section_names loc_dwo; | |
43988095 | 362 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
363 | struct dwarf2_section_names macinfo_dwo; |
364 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
365 | struct dwarf2_section_names str_dwo; |
366 | struct dwarf2_section_names str_offsets_dwo; | |
367 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
368 | struct dwarf2_section_names cu_index; |
369 | struct dwarf2_section_names tu_index; | |
3019eac3 | 370 | } |
80626a55 | 371 | dwop_section_names = |
3019eac3 DE |
372 | { |
373 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
374 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
375 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
376 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 377 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
378 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
379 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
380 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
381 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
382 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
383 | { ".debug_cu_index", ".zdebug_cu_index" }, |
384 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
385 | }; |
386 | ||
c906108c SS |
387 | /* local data types */ |
388 | ||
107d2387 AC |
389 | /* The data in a compilation unit header, after target2host |
390 | translation, looks like this. */ | |
c906108c | 391 | struct comp_unit_head |
a738430d | 392 | { |
c764a876 | 393 | unsigned int length; |
a738430d | 394 | short version; |
a738430d MK |
395 | unsigned char addr_size; |
396 | unsigned char signed_addr_p; | |
b64f50a1 | 397 | sect_offset abbrev_offset; |
57349743 | 398 | |
a738430d MK |
399 | /* Size of file offsets; either 4 or 8. */ |
400 | unsigned int offset_size; | |
57349743 | 401 | |
a738430d MK |
402 | /* Size of the length field; either 4 or 12. */ |
403 | unsigned int initial_length_size; | |
57349743 | 404 | |
43988095 JK |
405 | enum dwarf_unit_type unit_type; |
406 | ||
a738430d MK |
407 | /* Offset to the first byte of this compilation unit header in the |
408 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 409 | sect_offset offset; |
57349743 | 410 | |
d00adf39 DE |
411 | /* Offset to first die in this cu from the start of the cu. |
412 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 413 | cu_offset first_die_offset; |
43988095 JK |
414 | |
415 | /* 64-bit signature of this type unit - it is valid only for | |
416 | UNIT_TYPE DW_UT_type. */ | |
417 | ULONGEST signature; | |
418 | ||
419 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
420 | cu_offset type_offset_in_tu; | |
a738430d | 421 | }; |
c906108c | 422 | |
3da10d80 KS |
423 | /* Type used for delaying computation of method physnames. |
424 | See comments for compute_delayed_physnames. */ | |
425 | struct delayed_method_info | |
426 | { | |
427 | /* The type to which the method is attached, i.e., its parent class. */ | |
428 | struct type *type; | |
429 | ||
430 | /* The index of the method in the type's function fieldlists. */ | |
431 | int fnfield_index; | |
432 | ||
433 | /* The index of the method in the fieldlist. */ | |
434 | int index; | |
435 | ||
436 | /* The name of the DIE. */ | |
437 | const char *name; | |
438 | ||
439 | /* The DIE associated with this method. */ | |
440 | struct die_info *die; | |
441 | }; | |
442 | ||
443 | typedef struct delayed_method_info delayed_method_info; | |
444 | DEF_VEC_O (delayed_method_info); | |
445 | ||
e7c27a73 DJ |
446 | /* Internal state when decoding a particular compilation unit. */ |
447 | struct dwarf2_cu | |
448 | { | |
449 | /* The objfile containing this compilation unit. */ | |
450 | struct objfile *objfile; | |
451 | ||
d00adf39 | 452 | /* The header of the compilation unit. */ |
e7c27a73 | 453 | struct comp_unit_head header; |
e142c38c | 454 | |
d00adf39 DE |
455 | /* Base address of this compilation unit. */ |
456 | CORE_ADDR base_address; | |
457 | ||
458 | /* Non-zero if base_address has been set. */ | |
459 | int base_known; | |
460 | ||
e142c38c DJ |
461 | /* The language we are debugging. */ |
462 | enum language language; | |
463 | const struct language_defn *language_defn; | |
464 | ||
b0f35d58 DL |
465 | const char *producer; |
466 | ||
e142c38c DJ |
467 | /* The generic symbol table building routines have separate lists for |
468 | file scope symbols and all all other scopes (local scopes). So | |
469 | we need to select the right one to pass to add_symbol_to_list(). | |
470 | We do it by keeping a pointer to the correct list in list_in_scope. | |
471 | ||
472 | FIXME: The original dwarf code just treated the file scope as the | |
473 | first local scope, and all other local scopes as nested local | |
474 | scopes, and worked fine. Check to see if we really need to | |
475 | distinguish these in buildsym.c. */ | |
476 | struct pending **list_in_scope; | |
477 | ||
433df2d4 DE |
478 | /* The abbrev table for this CU. |
479 | Normally this points to the abbrev table in the objfile. | |
480 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
481 | struct abbrev_table *abbrev_table; | |
72bf9492 | 482 | |
b64f50a1 JK |
483 | /* Hash table holding all the loaded partial DIEs |
484 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
485 | htab_t partial_dies; |
486 | ||
487 | /* Storage for things with the same lifetime as this read-in compilation | |
488 | unit, including partial DIEs. */ | |
489 | struct obstack comp_unit_obstack; | |
490 | ||
ae038cb0 DJ |
491 | /* When multiple dwarf2_cu structures are living in memory, this field |
492 | chains them all together, so that they can be released efficiently. | |
493 | We will probably also want a generation counter so that most-recently-used | |
494 | compilation units are cached... */ | |
495 | struct dwarf2_per_cu_data *read_in_chain; | |
496 | ||
69d751e3 | 497 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
498 | struct dwarf2_per_cu_data *per_cu; |
499 | ||
500 | /* How many compilation units ago was this CU last referenced? */ | |
501 | int last_used; | |
502 | ||
b64f50a1 JK |
503 | /* A hash table of DIE cu_offset for following references with |
504 | die_info->offset.sect_off as hash. */ | |
51545339 | 505 | htab_t die_hash; |
10b3939b DJ |
506 | |
507 | /* Full DIEs if read in. */ | |
508 | struct die_info *dies; | |
509 | ||
510 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
511 | units referenced by this one. Only set during full symbol processing; | |
512 | partial symbol tables do not have dependencies. */ | |
513 | htab_t dependencies; | |
514 | ||
cb1df416 DJ |
515 | /* Header data from the line table, during full symbol processing. */ |
516 | struct line_header *line_header; | |
517 | ||
3da10d80 KS |
518 | /* A list of methods which need to have physnames computed |
519 | after all type information has been read. */ | |
520 | VEC (delayed_method_info) *method_list; | |
521 | ||
96408a79 SA |
522 | /* To be copied to symtab->call_site_htab. */ |
523 | htab_t call_site_htab; | |
524 | ||
034e5797 DE |
525 | /* Non-NULL if this CU came from a DWO file. |
526 | There is an invariant here that is important to remember: | |
527 | Except for attributes copied from the top level DIE in the "main" | |
528 | (or "stub") file in preparation for reading the DWO file | |
529 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
530 | Either there isn't a DWO file (in which case this is NULL and the point | |
531 | is moot), or there is and either we're not going to read it (in which | |
532 | case this is NULL) or there is and we are reading it (in which case this | |
533 | is non-NULL). */ | |
3019eac3 DE |
534 | struct dwo_unit *dwo_unit; |
535 | ||
536 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
537 | (zero is a valid value though). | |
1dbab08b | 538 | Note this value comes from the Fission stub CU/TU's DIE. */ |
3019eac3 DE |
539 | ULONGEST addr_base; |
540 | ||
2e3cf129 DE |
541 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
542 | (zero is a valid value though). | |
1dbab08b | 543 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 544 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
545 | be used without needing to know whether DWO files are in use or not. |
546 | N.B. This does not apply to DW_AT_ranges appearing in | |
547 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
548 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
549 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
550 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
551 | ULONGEST ranges_base; |
552 | ||
ae038cb0 DJ |
553 | /* Mark used when releasing cached dies. */ |
554 | unsigned int mark : 1; | |
555 | ||
8be455d7 JK |
556 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
557 | This test is imperfect as there may exist optimized debug code not using | |
558 | any location list and still facing inlining issues if handled as | |
559 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 560 | unsigned int has_loclist : 1; |
ba919b58 | 561 | |
1b80a9fa JK |
562 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
563 | if all the producer_is_* fields are valid. This information is cached | |
564 | because profiling CU expansion showed excessive time spent in | |
565 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
566 | unsigned int checked_producer : 1; |
567 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 568 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 569 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
570 | |
571 | /* When set, the file that we're processing is known to have | |
572 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
573 | this information, but later versions do. */ | |
574 | ||
575 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
576 | }; |
577 | ||
10b3939b DJ |
578 | /* Persistent data held for a compilation unit, even when not |
579 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 580 | read_symtab_private field of the psymtab. */ |
10b3939b | 581 | |
ae038cb0 DJ |
582 | struct dwarf2_per_cu_data |
583 | { | |
36586728 | 584 | /* The start offset and length of this compilation unit. |
45452591 | 585 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
586 | initial_length_size. |
587 | If the DIE refers to a DWO file, this is always of the original die, | |
588 | not the DWO file. */ | |
b64f50a1 | 589 | sect_offset offset; |
36586728 | 590 | unsigned int length; |
ae038cb0 | 591 | |
43988095 JK |
592 | /* DWARF standard version this data has been read from (such as 4 or 5). */ |
593 | short dwarf_version; | |
594 | ||
ae038cb0 DJ |
595 | /* Flag indicating this compilation unit will be read in before |
596 | any of the current compilation units are processed. */ | |
c764a876 | 597 | unsigned int queued : 1; |
ae038cb0 | 598 | |
0d99eb77 DE |
599 | /* This flag will be set when reading partial DIEs if we need to load |
600 | absolutely all DIEs for this compilation unit, instead of just the ones | |
601 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
602 | hash table and don't find it. */ |
603 | unsigned int load_all_dies : 1; | |
604 | ||
0186c6a7 DE |
605 | /* Non-zero if this CU is from .debug_types. |
606 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
607 | this is non-zero. */ | |
3019eac3 DE |
608 | unsigned int is_debug_types : 1; |
609 | ||
36586728 TT |
610 | /* Non-zero if this CU is from the .dwz file. */ |
611 | unsigned int is_dwz : 1; | |
612 | ||
a2ce51a0 DE |
613 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
614 | This flag is only valid if is_debug_types is true. | |
615 | We can't read a CU directly from a DWO file: There are required | |
616 | attributes in the stub. */ | |
617 | unsigned int reading_dwo_directly : 1; | |
618 | ||
7ee85ab1 DE |
619 | /* Non-zero if the TU has been read. |
620 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
621 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
622 | fetching them from random other DWOs (due to comdat folding). | |
623 | If the TU has already been read, the optimization is unnecessary | |
624 | (and unwise - we don't want to change where gdb thinks the TU lives | |
625 | "midflight"). | |
626 | This flag is only valid if is_debug_types is true. */ | |
627 | unsigned int tu_read : 1; | |
628 | ||
3019eac3 DE |
629 | /* The section this CU/TU lives in. |
630 | If the DIE refers to a DWO file, this is always the original die, | |
631 | not the DWO file. */ | |
8a0459fd | 632 | struct dwarf2_section_info *section; |
348e048f | 633 | |
17ea53c3 | 634 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
cc12ce38 DE |
635 | of the CU cache it gets reset to NULL again. This is left as NULL for |
636 | dummy CUs (a CU header, but nothing else). */ | |
ae038cb0 | 637 | struct dwarf2_cu *cu; |
1c379e20 | 638 | |
9cdd5dbd DE |
639 | /* The corresponding objfile. |
640 | Normally we can get the objfile from dwarf2_per_objfile. | |
641 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
642 | struct objfile *objfile; |
643 | ||
fffbe6a8 YQ |
644 | /* When dwarf2_per_objfile->using_index is true, the 'quick' field |
645 | is active. Otherwise, the 'psymtab' field is active. */ | |
9291a0cd TT |
646 | union |
647 | { | |
648 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 649 | or NULL for unread partial units. */ |
9291a0cd TT |
650 | struct partial_symtab *psymtab; |
651 | ||
652 | /* Data needed by the "quick" functions. */ | |
653 | struct dwarf2_per_cu_quick_data *quick; | |
654 | } v; | |
95554aad | 655 | |
796a7ff8 DE |
656 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
657 | while reading psymtabs, used to compute the psymtab dependencies, | |
658 | and then cleared. Then it is filled in again while reading full | |
659 | symbols, and only deleted when the objfile is destroyed. | |
660 | ||
661 | This is also used to work around a difference between the way gold | |
662 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
663 | is a gold bug. For symbols coming from TUs, gold records in the index | |
664 | the CU that includes the TU instead of the TU itself. This breaks | |
665 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
666 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
667 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
668 | we need to look in TU Z to find X. Fortunately, this is akin to | |
669 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
670 | .gdb_index version <=7 this also records the TUs that the CU referred | |
671 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
672 | indices so we only pay a price for gold generated indices. |
673 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 674 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
675 | }; |
676 | ||
348e048f DE |
677 | /* Entry in the signatured_types hash table. */ |
678 | ||
679 | struct signatured_type | |
680 | { | |
42e7ad6c | 681 | /* The "per_cu" object of this type. |
ac9ec31b | 682 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
683 | N.B.: This is the first member so that it's easy to convert pointers |
684 | between them. */ | |
685 | struct dwarf2_per_cu_data per_cu; | |
686 | ||
3019eac3 | 687 | /* The type's signature. */ |
348e048f DE |
688 | ULONGEST signature; |
689 | ||
3019eac3 | 690 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
691 | If this TU is a DWO stub and the definition lives in a DWO file |
692 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
693 | cu_offset type_offset_in_tu; |
694 | ||
695 | /* Offset in the section of the type's DIE. | |
696 | If the definition lives in a DWO file, this is the offset in the | |
697 | .debug_types.dwo section. | |
698 | The value is zero until the actual value is known. | |
699 | Zero is otherwise not a valid section offset. */ | |
700 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
701 | |
702 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
703 | can share them. This points to the containing symtab. */ | |
704 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
705 | |
706 | /* The type. | |
707 | The first time we encounter this type we fully read it in and install it | |
708 | in the symbol tables. Subsequent times we only need the type. */ | |
709 | struct type *type; | |
a2ce51a0 DE |
710 | |
711 | /* Containing DWO unit. | |
712 | This field is valid iff per_cu.reading_dwo_directly. */ | |
713 | struct dwo_unit *dwo_unit; | |
348e048f DE |
714 | }; |
715 | ||
0186c6a7 DE |
716 | typedef struct signatured_type *sig_type_ptr; |
717 | DEF_VEC_P (sig_type_ptr); | |
718 | ||
094b34ac DE |
719 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
720 | This includes type_unit_group and quick_file_names. */ | |
721 | ||
722 | struct stmt_list_hash | |
723 | { | |
724 | /* The DWO unit this table is from or NULL if there is none. */ | |
725 | struct dwo_unit *dwo_unit; | |
726 | ||
727 | /* Offset in .debug_line or .debug_line.dwo. */ | |
728 | sect_offset line_offset; | |
729 | }; | |
730 | ||
f4dc4d17 DE |
731 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
732 | an object of this type. */ | |
733 | ||
734 | struct type_unit_group | |
735 | { | |
0186c6a7 | 736 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
737 | To simplify things we create an artificial CU that "includes" all the |
738 | type units using this stmt_list so that the rest of the code still has | |
739 | a "per_cu" handle on the symtab. | |
740 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 741 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
742 | struct dwarf2_per_cu_data per_cu; |
743 | ||
0186c6a7 DE |
744 | /* The TUs that share this DW_AT_stmt_list entry. |
745 | This is added to while parsing type units to build partial symtabs, | |
746 | and is deleted afterwards and not used again. */ | |
747 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 748 | |
43f3e411 | 749 | /* The compunit symtab. |
094b34ac | 750 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
751 | so we create an essentially anonymous symtab as the compunit symtab. */ |
752 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 753 | |
094b34ac DE |
754 | /* The data used to construct the hash key. */ |
755 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
756 | |
757 | /* The number of symtabs from the line header. | |
758 | The value here must match line_header.num_file_names. */ | |
759 | unsigned int num_symtabs; | |
760 | ||
761 | /* The symbol tables for this TU (obtained from the files listed in | |
762 | DW_AT_stmt_list). | |
763 | WARNING: The order of entries here must match the order of entries | |
764 | in the line header. After the first TU using this type_unit_group, the | |
765 | line header for the subsequent TUs is recreated from this. This is done | |
766 | because we need to use the same symtabs for each TU using the same | |
767 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
768 | there's no guarantee the line header doesn't have duplicate entries. */ | |
769 | struct symtab **symtabs; | |
770 | }; | |
771 | ||
73869dc2 | 772 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
773 | |
774 | struct dwo_sections | |
775 | { | |
776 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
777 | struct dwarf2_section_info line; |
778 | struct dwarf2_section_info loc; | |
43988095 | 779 | struct dwarf2_section_info loclists; |
09262596 DE |
780 | struct dwarf2_section_info macinfo; |
781 | struct dwarf2_section_info macro; | |
3019eac3 DE |
782 | struct dwarf2_section_info str; |
783 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
784 | /* In the case of a virtual DWO file, these two are unused. */ |
785 | struct dwarf2_section_info info; | |
3019eac3 DE |
786 | VEC (dwarf2_section_info_def) *types; |
787 | }; | |
788 | ||
c88ee1f0 | 789 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
790 | |
791 | struct dwo_unit | |
792 | { | |
793 | /* Backlink to the containing struct dwo_file. */ | |
794 | struct dwo_file *dwo_file; | |
795 | ||
796 | /* The "id" that distinguishes this CU/TU. | |
797 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
798 | Since signatures came first, we stick with it for consistency. */ | |
799 | ULONGEST signature; | |
800 | ||
801 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 802 | struct dwarf2_section_info *section; |
3019eac3 | 803 | |
19ac8c2e | 804 | /* Same as dwarf2_per_cu_data:{offset,length} but in the DWO section. */ |
3019eac3 DE |
805 | sect_offset offset; |
806 | unsigned int length; | |
807 | ||
808 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
809 | cu_offset type_offset_in_tu; | |
810 | }; | |
811 | ||
73869dc2 DE |
812 | /* include/dwarf2.h defines the DWP section codes. |
813 | It defines a max value but it doesn't define a min value, which we | |
814 | use for error checking, so provide one. */ | |
815 | ||
816 | enum dwp_v2_section_ids | |
817 | { | |
818 | DW_SECT_MIN = 1 | |
819 | }; | |
820 | ||
80626a55 | 821 | /* Data for one DWO file. |
57d63ce2 DE |
822 | |
823 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
824 | appears in a DWP file). DWP files don't really have DWO files per se - | |
825 | comdat folding of types "loses" the DWO file they came from, and from | |
826 | a high level view DWP files appear to contain a mass of random types. | |
827 | However, to maintain consistency with the non-DWP case we pretend DWP | |
828 | files contain virtual DWO files, and we assign each TU with one virtual | |
829 | DWO file (generally based on the line and abbrev section offsets - | |
830 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
831 | |
832 | struct dwo_file | |
833 | { | |
0ac5b59e | 834 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
835 | For virtual DWO files the name is constructed from the section offsets |
836 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
837 | from related CU+TUs. */ | |
0ac5b59e DE |
838 | const char *dwo_name; |
839 | ||
840 | /* The DW_AT_comp_dir attribute. */ | |
841 | const char *comp_dir; | |
3019eac3 | 842 | |
80626a55 DE |
843 | /* The bfd, when the file is open. Otherwise this is NULL. |
844 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
845 | bfd *dbfd; | |
3019eac3 | 846 | |
73869dc2 DE |
847 | /* The sections that make up this DWO file. |
848 | Remember that for virtual DWO files in DWP V2, these are virtual | |
849 | sections (for lack of a better name). */ | |
3019eac3 DE |
850 | struct dwo_sections sections; |
851 | ||
19c3d4c9 DE |
852 | /* The CU in the file. |
853 | We only support one because having more than one requires hacking the | |
854 | dwo_name of each to match, which is highly unlikely to happen. | |
855 | Doing this means all TUs can share comp_dir: We also assume that | |
856 | DW_AT_comp_dir across all TUs in a DWO file will be identical. */ | |
857 | struct dwo_unit *cu; | |
3019eac3 DE |
858 | |
859 | /* Table of TUs in the file. | |
860 | Each element is a struct dwo_unit. */ | |
861 | htab_t tus; | |
862 | }; | |
863 | ||
80626a55 DE |
864 | /* These sections are what may appear in a DWP file. */ |
865 | ||
866 | struct dwp_sections | |
867 | { | |
73869dc2 | 868 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
869 | struct dwarf2_section_info str; |
870 | struct dwarf2_section_info cu_index; | |
871 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
872 | |
873 | /* These are only used by DWP version 2 files. | |
874 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
875 | sections are referenced by section number, and are not recorded here. | |
876 | In DWP version 2 there is at most one copy of all these sections, each | |
877 | section being (effectively) comprised of the concatenation of all of the | |
878 | individual sections that exist in the version 1 format. | |
879 | To keep the code simple we treat each of these concatenated pieces as a | |
880 | section itself (a virtual section?). */ | |
881 | struct dwarf2_section_info abbrev; | |
882 | struct dwarf2_section_info info; | |
883 | struct dwarf2_section_info line; | |
884 | struct dwarf2_section_info loc; | |
885 | struct dwarf2_section_info macinfo; | |
886 | struct dwarf2_section_info macro; | |
887 | struct dwarf2_section_info str_offsets; | |
888 | struct dwarf2_section_info types; | |
80626a55 DE |
889 | }; |
890 | ||
73869dc2 DE |
891 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
892 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 893 | |
73869dc2 | 894 | struct virtual_v1_dwo_sections |
80626a55 DE |
895 | { |
896 | struct dwarf2_section_info abbrev; | |
897 | struct dwarf2_section_info line; | |
898 | struct dwarf2_section_info loc; | |
899 | struct dwarf2_section_info macinfo; | |
900 | struct dwarf2_section_info macro; | |
901 | struct dwarf2_section_info str_offsets; | |
902 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 903 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
904 | struct dwarf2_section_info info_or_types; |
905 | }; | |
906 | ||
73869dc2 DE |
907 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
908 | In version 2, the sections of the DWO files are concatenated together | |
909 | and stored in one section of that name. Thus each ELF section contains | |
910 | several "virtual" sections. */ | |
911 | ||
912 | struct virtual_v2_dwo_sections | |
913 | { | |
914 | bfd_size_type abbrev_offset; | |
915 | bfd_size_type abbrev_size; | |
916 | ||
917 | bfd_size_type line_offset; | |
918 | bfd_size_type line_size; | |
919 | ||
920 | bfd_size_type loc_offset; | |
921 | bfd_size_type loc_size; | |
922 | ||
923 | bfd_size_type macinfo_offset; | |
924 | bfd_size_type macinfo_size; | |
925 | ||
926 | bfd_size_type macro_offset; | |
927 | bfd_size_type macro_size; | |
928 | ||
929 | bfd_size_type str_offsets_offset; | |
930 | bfd_size_type str_offsets_size; | |
931 | ||
932 | /* Each DWP hash table entry records one CU or one TU. | |
933 | That is recorded here, and copied to dwo_unit.section. */ | |
934 | bfd_size_type info_or_types_offset; | |
935 | bfd_size_type info_or_types_size; | |
936 | }; | |
937 | ||
80626a55 DE |
938 | /* Contents of DWP hash tables. */ |
939 | ||
940 | struct dwp_hash_table | |
941 | { | |
73869dc2 | 942 | uint32_t version, nr_columns; |
80626a55 | 943 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
944 | const gdb_byte *hash_table, *unit_table; |
945 | union | |
946 | { | |
947 | struct | |
948 | { | |
949 | const gdb_byte *indices; | |
950 | } v1; | |
951 | struct | |
952 | { | |
953 | /* This is indexed by column number and gives the id of the section | |
954 | in that column. */ | |
955 | #define MAX_NR_V2_DWO_SECTIONS \ | |
956 | (1 /* .debug_info or .debug_types */ \ | |
957 | + 1 /* .debug_abbrev */ \ | |
958 | + 1 /* .debug_line */ \ | |
959 | + 1 /* .debug_loc */ \ | |
960 | + 1 /* .debug_str_offsets */ \ | |
961 | + 1 /* .debug_macro or .debug_macinfo */) | |
962 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
963 | const gdb_byte *offsets; | |
964 | const gdb_byte *sizes; | |
965 | } v2; | |
966 | } section_pool; | |
80626a55 DE |
967 | }; |
968 | ||
969 | /* Data for one DWP file. */ | |
970 | ||
971 | struct dwp_file | |
972 | { | |
973 | /* Name of the file. */ | |
974 | const char *name; | |
975 | ||
73869dc2 DE |
976 | /* File format version. */ |
977 | int version; | |
978 | ||
93417882 | 979 | /* The bfd. */ |
80626a55 DE |
980 | bfd *dbfd; |
981 | ||
982 | /* Section info for this file. */ | |
983 | struct dwp_sections sections; | |
984 | ||
57d63ce2 | 985 | /* Table of CUs in the file. */ |
80626a55 DE |
986 | const struct dwp_hash_table *cus; |
987 | ||
988 | /* Table of TUs in the file. */ | |
989 | const struct dwp_hash_table *tus; | |
990 | ||
19ac8c2e DE |
991 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
992 | htab_t loaded_cus; | |
993 | htab_t loaded_tus; | |
80626a55 | 994 | |
73869dc2 DE |
995 | /* Table to map ELF section numbers to their sections. |
996 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
997 | unsigned int num_sections; |
998 | asection **elf_sections; | |
999 | }; | |
1000 | ||
36586728 TT |
1001 | /* This represents a '.dwz' file. */ |
1002 | ||
1003 | struct dwz_file | |
1004 | { | |
1005 | /* A dwz file can only contain a few sections. */ | |
1006 | struct dwarf2_section_info abbrev; | |
1007 | struct dwarf2_section_info info; | |
1008 | struct dwarf2_section_info str; | |
1009 | struct dwarf2_section_info line; | |
1010 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 1011 | struct dwarf2_section_info gdb_index; |
36586728 TT |
1012 | |
1013 | /* The dwz's BFD. */ | |
1014 | bfd *dwz_bfd; | |
1015 | }; | |
1016 | ||
0963b4bd MS |
1017 | /* Struct used to pass misc. parameters to read_die_and_children, et |
1018 | al. which are used for both .debug_info and .debug_types dies. | |
1019 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 1020 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
1021 | |
1022 | struct die_reader_specs | |
1023 | { | |
a32a8923 | 1024 | /* The bfd of die_section. */ |
93311388 DE |
1025 | bfd* abfd; |
1026 | ||
1027 | /* The CU of the DIE we are parsing. */ | |
1028 | struct dwarf2_cu *cu; | |
1029 | ||
80626a55 | 1030 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1031 | struct dwo_file *dwo_file; |
1032 | ||
dee91e82 | 1033 | /* The section the die comes from. |
3019eac3 | 1034 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1035 | struct dwarf2_section_info *die_section; |
1036 | ||
1037 | /* die_section->buffer. */ | |
d521ce57 | 1038 | const gdb_byte *buffer; |
f664829e DE |
1039 | |
1040 | /* The end of the buffer. */ | |
1041 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1042 | |
1043 | /* The value of the DW_AT_comp_dir attribute. */ | |
1044 | const char *comp_dir; | |
93311388 DE |
1045 | }; |
1046 | ||
fd820528 | 1047 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1048 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1049 | const gdb_byte *info_ptr, |
dee91e82 DE |
1050 | struct die_info *comp_unit_die, |
1051 | int has_children, | |
1052 | void *data); | |
1053 | ||
52059ffd TT |
1054 | struct file_entry |
1055 | { | |
1056 | const char *name; | |
1057 | unsigned int dir_index; | |
1058 | unsigned int mod_time; | |
1059 | unsigned int length; | |
83769d0b DE |
1060 | /* Non-zero if referenced by the Line Number Program. */ |
1061 | int included_p; | |
1062 | /* The associated symbol table, if any. */ | |
1063 | struct symtab *symtab; | |
52059ffd TT |
1064 | }; |
1065 | ||
debd256d JB |
1066 | /* The line number information for a compilation unit (found in the |
1067 | .debug_line section) begins with a "statement program header", | |
1068 | which contains the following information. */ | |
1069 | struct line_header | |
1070 | { | |
527f3840 JK |
1071 | /* Offset of line number information in .debug_line section. */ |
1072 | sect_offset offset; | |
1073 | ||
1074 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
1075 | unsigned offset_in_dwz : 1; | |
1076 | ||
debd256d JB |
1077 | unsigned int total_length; |
1078 | unsigned short version; | |
1079 | unsigned int header_length; | |
1080 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 1081 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
1082 | unsigned char default_is_stmt; |
1083 | int line_base; | |
1084 | unsigned char line_range; | |
1085 | unsigned char opcode_base; | |
1086 | ||
1087 | /* standard_opcode_lengths[i] is the number of operands for the | |
1088 | standard opcode whose value is i. This means that | |
1089 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1090 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
1091 | unsigned char *standard_opcode_lengths; | |
1092 | ||
1093 | /* The include_directories table. NOTE! These strings are not | |
1094 | allocated with xmalloc; instead, they are pointers into | |
1095 | debug_line_buffer. If you try to free them, `free' will get | |
1096 | indigestion. */ | |
1097 | unsigned int num_include_dirs, include_dirs_size; | |
d521ce57 | 1098 | const char **include_dirs; |
debd256d JB |
1099 | |
1100 | /* The file_names table. NOTE! These strings are not allocated | |
1101 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
1102 | Don't try to free them directly. */ | |
1103 | unsigned int num_file_names, file_names_size; | |
52059ffd | 1104 | struct file_entry *file_names; |
debd256d JB |
1105 | |
1106 | /* The start and end of the statement program following this | |
6502dd73 | 1107 | header. These point into dwarf2_per_objfile->line_buffer. */ |
d521ce57 | 1108 | const gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 1109 | }; |
c906108c SS |
1110 | |
1111 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 1112 | need this much information. */ |
c906108c SS |
1113 | struct partial_die_info |
1114 | { | |
72bf9492 | 1115 | /* Offset of this DIE. */ |
b64f50a1 | 1116 | sect_offset offset; |
72bf9492 DJ |
1117 | |
1118 | /* DWARF-2 tag for this DIE. */ | |
1119 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1120 | ||
72bf9492 DJ |
1121 | /* Assorted flags describing the data found in this DIE. */ |
1122 | unsigned int has_children : 1; | |
1123 | unsigned int is_external : 1; | |
1124 | unsigned int is_declaration : 1; | |
1125 | unsigned int has_type : 1; | |
1126 | unsigned int has_specification : 1; | |
1127 | unsigned int has_pc_info : 1; | |
481860b3 | 1128 | unsigned int may_be_inlined : 1; |
72bf9492 | 1129 | |
0c1b455e TT |
1130 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1131 | unsigned int main_subprogram : 1; | |
1132 | ||
72bf9492 DJ |
1133 | /* Flag set if the SCOPE field of this structure has been |
1134 | computed. */ | |
1135 | unsigned int scope_set : 1; | |
1136 | ||
fa4028e9 JB |
1137 | /* Flag set if the DIE has a byte_size attribute. */ |
1138 | unsigned int has_byte_size : 1; | |
1139 | ||
ff908ebf AW |
1140 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1141 | unsigned int has_const_value : 1; | |
1142 | ||
98bfdba5 PA |
1143 | /* Flag set if any of the DIE's children are template arguments. */ |
1144 | unsigned int has_template_arguments : 1; | |
1145 | ||
abc72ce4 DE |
1146 | /* Flag set if fixup_partial_die has been called on this die. */ |
1147 | unsigned int fixup_called : 1; | |
1148 | ||
36586728 TT |
1149 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1150 | unsigned int is_dwz : 1; | |
1151 | ||
1152 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1153 | unsigned int spec_is_dwz : 1; | |
1154 | ||
72bf9492 | 1155 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1156 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1157 | const char *name; |
72bf9492 | 1158 | |
abc72ce4 DE |
1159 | /* The linkage name, if present. */ |
1160 | const char *linkage_name; | |
1161 | ||
72bf9492 DJ |
1162 | /* The scope to prepend to our children. This is generally |
1163 | allocated on the comp_unit_obstack, so will disappear | |
1164 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1165 | const char *scope; |
72bf9492 | 1166 | |
95554aad TT |
1167 | /* Some data associated with the partial DIE. The tag determines |
1168 | which field is live. */ | |
1169 | union | |
1170 | { | |
1171 | /* The location description associated with this DIE, if any. */ | |
1172 | struct dwarf_block *locdesc; | |
1173 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
1174 | sect_offset offset; | |
1175 | } d; | |
72bf9492 DJ |
1176 | |
1177 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1178 | CORE_ADDR lowpc; |
1179 | CORE_ADDR highpc; | |
72bf9492 | 1180 | |
93311388 | 1181 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1182 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1183 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1184 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1185 | const gdb_byte *sibling; |
72bf9492 DJ |
1186 | |
1187 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1188 | DW_AT_specification (or DW_AT_abstract_origin or | |
1189 | DW_AT_extension). */ | |
b64f50a1 | 1190 | sect_offset spec_offset; |
72bf9492 DJ |
1191 | |
1192 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1193 | if any. */ | |
1194 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1195 | }; |
1196 | ||
0963b4bd | 1197 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1198 | struct abbrev_info |
1199 | { | |
1200 | unsigned int number; /* number identifying abbrev */ | |
1201 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1202 | unsigned short has_children; /* boolean */ |
1203 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1204 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1205 | struct abbrev_info *next; /* next in chain */ | |
1206 | }; | |
1207 | ||
1208 | struct attr_abbrev | |
1209 | { | |
9d25dd43 DE |
1210 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1211 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1212 | |
1213 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1214 | LONGEST implicit_const; | |
c906108c SS |
1215 | }; |
1216 | ||
433df2d4 DE |
1217 | /* Size of abbrev_table.abbrev_hash_table. */ |
1218 | #define ABBREV_HASH_SIZE 121 | |
1219 | ||
1220 | /* Top level data structure to contain an abbreviation table. */ | |
1221 | ||
1222 | struct abbrev_table | |
1223 | { | |
f4dc4d17 DE |
1224 | /* Where the abbrev table came from. |
1225 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1226 | sect_offset offset; |
1227 | ||
1228 | /* Storage for the abbrev table. */ | |
1229 | struct obstack abbrev_obstack; | |
1230 | ||
1231 | /* Hash table of abbrevs. | |
1232 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1233 | It could be statically allocated, but the previous code didn't so we | |
1234 | don't either. */ | |
1235 | struct abbrev_info **abbrevs; | |
1236 | }; | |
1237 | ||
0963b4bd | 1238 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1239 | struct attribute |
1240 | { | |
9d25dd43 | 1241 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1242 | ENUM_BITFIELD(dwarf_form) form : 15; |
1243 | ||
1244 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1245 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1246 | here for better struct attribute alignment. */ | |
1247 | unsigned int string_is_canonical : 1; | |
1248 | ||
b60c80d6 DJ |
1249 | union |
1250 | { | |
15d034d0 | 1251 | const char *str; |
b60c80d6 | 1252 | struct dwarf_block *blk; |
43bbcdc2 PH |
1253 | ULONGEST unsnd; |
1254 | LONGEST snd; | |
b60c80d6 | 1255 | CORE_ADDR addr; |
ac9ec31b | 1256 | ULONGEST signature; |
b60c80d6 DJ |
1257 | } |
1258 | u; | |
1259 | }; | |
1260 | ||
0963b4bd | 1261 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1262 | struct die_info |
1263 | { | |
76815b17 DE |
1264 | /* DWARF-2 tag for this DIE. */ |
1265 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1266 | ||
1267 | /* Number of attributes */ | |
98bfdba5 PA |
1268 | unsigned char num_attrs; |
1269 | ||
1270 | /* True if we're presently building the full type name for the | |
1271 | type derived from this DIE. */ | |
1272 | unsigned char building_fullname : 1; | |
76815b17 | 1273 | |
adde2bff DE |
1274 | /* True if this die is in process. PR 16581. */ |
1275 | unsigned char in_process : 1; | |
1276 | ||
76815b17 DE |
1277 | /* Abbrev number */ |
1278 | unsigned int abbrev; | |
1279 | ||
93311388 | 1280 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1281 | sect_offset offset; |
78ba4af6 JB |
1282 | |
1283 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1284 | points to this die's parent; CHILD points to the first child of | |
1285 | this node; and all the children of a given node are chained | |
4950bc1c | 1286 | together via their SIBLING fields. */ |
639d11d3 DC |
1287 | struct die_info *child; /* Its first child, if any. */ |
1288 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1289 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1290 | |
b60c80d6 DJ |
1291 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1292 | zero, but it's not common and zero-sized arrays are not | |
1293 | sufficiently portable C. */ | |
1294 | struct attribute attrs[1]; | |
c906108c SS |
1295 | }; |
1296 | ||
0963b4bd | 1297 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1298 | |
1299 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1300 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1301 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1302 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1303 | #define DW_SND(attr) ((attr)->u.snd) | |
1304 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1305 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1306 | |
0963b4bd | 1307 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1308 | struct dwarf_block |
1309 | { | |
56eb65bd | 1310 | size_t size; |
1d6edc3c JK |
1311 | |
1312 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1313 | const gdb_byte *data; |
c906108c SS |
1314 | }; |
1315 | ||
c906108c SS |
1316 | #ifndef ATTR_ALLOC_CHUNK |
1317 | #define ATTR_ALLOC_CHUNK 4 | |
1318 | #endif | |
1319 | ||
c906108c SS |
1320 | /* Allocate fields for structs, unions and enums in this size. */ |
1321 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1322 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1323 | #endif | |
1324 | ||
c906108c SS |
1325 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1326 | but this would require a corresponding change in unpack_field_as_long | |
1327 | and friends. */ | |
1328 | static int bits_per_byte = 8; | |
1329 | ||
52059ffd TT |
1330 | struct nextfield |
1331 | { | |
1332 | struct nextfield *next; | |
1333 | int accessibility; | |
1334 | int virtuality; | |
1335 | struct field field; | |
1336 | }; | |
1337 | ||
1338 | struct nextfnfield | |
1339 | { | |
1340 | struct nextfnfield *next; | |
1341 | struct fn_field fnfield; | |
1342 | }; | |
1343 | ||
1344 | struct fnfieldlist | |
1345 | { | |
1346 | const char *name; | |
1347 | int length; | |
1348 | struct nextfnfield *head; | |
1349 | }; | |
1350 | ||
1351 | struct typedef_field_list | |
1352 | { | |
1353 | struct typedef_field field; | |
1354 | struct typedef_field_list *next; | |
1355 | }; | |
1356 | ||
c906108c SS |
1357 | /* The routines that read and process dies for a C struct or C++ class |
1358 | pass lists of data member fields and lists of member function fields | |
1359 | in an instance of a field_info structure, as defined below. */ | |
1360 | struct field_info | |
c5aa993b | 1361 | { |
0963b4bd | 1362 | /* List of data member and baseclasses fields. */ |
52059ffd | 1363 | struct nextfield *fields, *baseclasses; |
c906108c | 1364 | |
7d0ccb61 | 1365 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1366 | int nfields; |
c906108c | 1367 | |
c5aa993b JM |
1368 | /* Number of baseclasses. */ |
1369 | int nbaseclasses; | |
c906108c | 1370 | |
c5aa993b JM |
1371 | /* Set if the accesibility of one of the fields is not public. */ |
1372 | int non_public_fields; | |
c906108c | 1373 | |
c5aa993b JM |
1374 | /* Member function fields array, entries are allocated in the order they |
1375 | are encountered in the object file. */ | |
52059ffd | 1376 | struct nextfnfield *fnfields; |
c906108c | 1377 | |
c5aa993b JM |
1378 | /* Member function fieldlist array, contains name of possibly overloaded |
1379 | member function, number of overloaded member functions and a pointer | |
1380 | to the head of the member function field chain. */ | |
52059ffd | 1381 | struct fnfieldlist *fnfieldlists; |
c906108c | 1382 | |
c5aa993b JM |
1383 | /* Number of entries in the fnfieldlists array. */ |
1384 | int nfnfields; | |
98751a41 JK |
1385 | |
1386 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1387 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
52059ffd | 1388 | struct typedef_field_list *typedef_field_list; |
98751a41 | 1389 | unsigned typedef_field_list_count; |
c5aa993b | 1390 | }; |
c906108c | 1391 | |
10b3939b DJ |
1392 | /* One item on the queue of compilation units to read in full symbols |
1393 | for. */ | |
1394 | struct dwarf2_queue_item | |
1395 | { | |
1396 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1397 | enum language pretend_language; |
10b3939b DJ |
1398 | struct dwarf2_queue_item *next; |
1399 | }; | |
1400 | ||
1401 | /* The current queue. */ | |
1402 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1403 | ||
ae038cb0 DJ |
1404 | /* Loaded secondary compilation units are kept in memory until they |
1405 | have not been referenced for the processing of this many | |
1406 | compilation units. Set this to zero to disable caching. Cache | |
1407 | sizes of up to at least twenty will improve startup time for | |
1408 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1409 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1410 | static void |
b4f54984 DE |
1411 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1412 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1413 | { |
3e43a32a | 1414 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1415 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1416 | value); |
1417 | } | |
4390d890 | 1418 | \f |
c906108c SS |
1419 | /* local function prototypes */ |
1420 | ||
a32a8923 DE |
1421 | static const char *get_section_name (const struct dwarf2_section_info *); |
1422 | ||
1423 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1424 | ||
4efb68b1 | 1425 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1426 | |
918dd910 JK |
1427 | static void dwarf2_find_base_address (struct die_info *die, |
1428 | struct dwarf2_cu *cu); | |
1429 | ||
0018ea6f DE |
1430 | static struct partial_symtab *create_partial_symtab |
1431 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1432 | ||
c67a9c90 | 1433 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1434 | |
72bf9492 DJ |
1435 | static void scan_partial_symbols (struct partial_die_info *, |
1436 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1437 | int, struct dwarf2_cu *); |
c906108c | 1438 | |
72bf9492 DJ |
1439 | static void add_partial_symbol (struct partial_die_info *, |
1440 | struct dwarf2_cu *); | |
63d06c5c | 1441 | |
72bf9492 DJ |
1442 | static void add_partial_namespace (struct partial_die_info *pdi, |
1443 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1444 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1445 | |
5d7cb8df | 1446 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1447 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1448 | struct dwarf2_cu *cu); |
1449 | ||
72bf9492 DJ |
1450 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1451 | struct dwarf2_cu *cu); | |
91c24f0a | 1452 | |
bc30ff58 JB |
1453 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1454 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1455 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1456 | |
257e7a09 YQ |
1457 | static void dwarf2_read_symtab (struct partial_symtab *, |
1458 | struct objfile *); | |
c906108c | 1459 | |
a14ed312 | 1460 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1461 | |
433df2d4 DE |
1462 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1463 | (const struct abbrev_table *, unsigned int); | |
1464 | ||
1465 | static struct abbrev_table *abbrev_table_read_table | |
1466 | (struct dwarf2_section_info *, sect_offset); | |
1467 | ||
1468 | static void abbrev_table_free (struct abbrev_table *); | |
1469 | ||
f4dc4d17 DE |
1470 | static void abbrev_table_free_cleanup (void *); |
1471 | ||
dee91e82 DE |
1472 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1473 | struct dwarf2_section_info *); | |
c906108c | 1474 | |
f3dd6933 | 1475 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1476 | |
d521ce57 | 1477 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1478 | |
dee91e82 | 1479 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1480 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1481 | |
d521ce57 TT |
1482 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1483 | struct partial_die_info *, | |
1484 | struct abbrev_info *, | |
1485 | unsigned int, | |
1486 | const gdb_byte *); | |
c906108c | 1487 | |
36586728 | 1488 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1489 | struct dwarf2_cu *); |
72bf9492 DJ |
1490 | |
1491 | static void fixup_partial_die (struct partial_die_info *, | |
1492 | struct dwarf2_cu *); | |
1493 | ||
d521ce57 TT |
1494 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1495 | struct attribute *, struct attr_abbrev *, | |
1496 | const gdb_byte *); | |
a8329558 | 1497 | |
a1855c1d | 1498 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1499 | |
a1855c1d | 1500 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1501 | |
a1855c1d | 1502 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1503 | |
a1855c1d | 1504 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1505 | |
a1855c1d | 1506 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1507 | |
d521ce57 | 1508 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1509 | unsigned int *); |
c906108c | 1510 | |
d521ce57 | 1511 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1512 | |
1513 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1514 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1515 | unsigned int *, unsigned int *); |
613e1657 | 1516 | |
d521ce57 TT |
1517 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1518 | const struct comp_unit_head *, | |
c764a876 DE |
1519 | unsigned int *); |
1520 | ||
d521ce57 | 1521 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1522 | |
f4dc4d17 DE |
1523 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1524 | sect_offset); | |
1525 | ||
d521ce57 | 1526 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1527 | |
d521ce57 | 1528 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1529 | |
d521ce57 TT |
1530 | static const char *read_indirect_string (bfd *, const gdb_byte *, |
1531 | const struct comp_unit_head *, | |
1532 | unsigned int *); | |
4bdf3d34 | 1533 | |
43988095 JK |
1534 | static const char *read_indirect_line_string (bfd *, const gdb_byte *, |
1535 | const struct comp_unit_head *, | |
1536 | unsigned int *); | |
36586728 | 1537 | |
43988095 | 1538 | static const char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
c906108c | 1539 | |
d521ce57 | 1540 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1541 | |
d521ce57 TT |
1542 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1543 | const gdb_byte *, | |
3019eac3 DE |
1544 | unsigned int *); |
1545 | ||
d521ce57 | 1546 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1547 | ULONGEST str_index); |
3019eac3 | 1548 | |
e142c38c | 1549 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1550 | |
e142c38c DJ |
1551 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1552 | struct dwarf2_cu *); | |
c906108c | 1553 | |
348e048f | 1554 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1555 | unsigned int); |
348e048f | 1556 | |
7d45c7c3 KB |
1557 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1558 | struct dwarf2_cu *cu); | |
1559 | ||
05cf31d1 JB |
1560 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1561 | struct dwarf2_cu *cu); | |
1562 | ||
e142c38c | 1563 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1564 | |
e142c38c | 1565 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1566 | struct dwarf2_cu **); |
63d06c5c | 1567 | |
debd256d JB |
1568 | static void free_line_header (struct line_header *lh); |
1569 | ||
3019eac3 DE |
1570 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1571 | struct dwarf2_cu *cu); | |
debd256d | 1572 | |
f3f5162e | 1573 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1574 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1575 | CORE_ADDR, int decode_mapping); |
c906108c | 1576 | |
4d663531 | 1577 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1578 | |
43f3e411 DE |
1579 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1580 | const char *, const char *, | |
1581 | CORE_ADDR); | |
f4dc4d17 | 1582 | |
a14ed312 | 1583 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1584 | struct dwarf2_cu *); |
c906108c | 1585 | |
34eaf542 TT |
1586 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1587 | struct dwarf2_cu *, struct symbol *); | |
1588 | ||
ff39bb5e | 1589 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1590 | struct dwarf2_cu *); |
c906108c | 1591 | |
ff39bb5e | 1592 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1593 | struct type *type, |
1594 | const char *name, | |
1595 | struct obstack *obstack, | |
12df843f | 1596 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1597 | const gdb_byte **bytes, |
98bfdba5 | 1598 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1599 | |
e7c27a73 | 1600 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1601 | |
b4ba55a1 JB |
1602 | static int need_gnat_info (struct dwarf2_cu *); |
1603 | ||
3e43a32a MS |
1604 | static struct type *die_descriptive_type (struct die_info *, |
1605 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1606 | |
1607 | static void set_descriptive_type (struct type *, struct die_info *, | |
1608 | struct dwarf2_cu *); | |
1609 | ||
e7c27a73 DJ |
1610 | static struct type *die_containing_type (struct die_info *, |
1611 | struct dwarf2_cu *); | |
c906108c | 1612 | |
ff39bb5e | 1613 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1614 | struct dwarf2_cu *); |
c906108c | 1615 | |
f792889a | 1616 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1617 | |
673bfd45 DE |
1618 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1619 | ||
0d5cff50 | 1620 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1621 | |
6e70227d | 1622 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1623 | const char *suffix, int physname, |
1624 | struct dwarf2_cu *cu); | |
63d06c5c | 1625 | |
e7c27a73 | 1626 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1627 | |
348e048f DE |
1628 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1629 | ||
e7c27a73 | 1630 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1631 | |
e7c27a73 | 1632 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1633 | |
96408a79 SA |
1634 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1635 | ||
ff013f42 JK |
1636 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1637 | struct dwarf2_cu *, struct partial_symtab *); | |
1638 | ||
3a2b436a | 1639 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1640 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1641 | enum pc_bounds_kind |
1642 | { | |
e385593e | 1643 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1644 | PC_BOUNDS_NOT_PRESENT, |
1645 | ||
e385593e JK |
1646 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1647 | were present but they do not form a valid range of PC addresses. */ | |
1648 | PC_BOUNDS_INVALID, | |
1649 | ||
3a2b436a JK |
1650 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1651 | PC_BOUNDS_RANGES, | |
1652 | ||
1653 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1654 | PC_BOUNDS_HIGH_LOW, | |
1655 | }; | |
1656 | ||
1657 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1658 | CORE_ADDR *, CORE_ADDR *, | |
1659 | struct dwarf2_cu *, | |
1660 | struct partial_symtab *); | |
c906108c | 1661 | |
fae299cd DC |
1662 | static void get_scope_pc_bounds (struct die_info *, |
1663 | CORE_ADDR *, CORE_ADDR *, | |
1664 | struct dwarf2_cu *); | |
1665 | ||
801e3a5b JB |
1666 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1667 | CORE_ADDR, struct dwarf2_cu *); | |
1668 | ||
a14ed312 | 1669 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1670 | struct dwarf2_cu *); |
c906108c | 1671 | |
a14ed312 | 1672 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1673 | struct type *, struct dwarf2_cu *); |
c906108c | 1674 | |
a14ed312 | 1675 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1676 | struct die_info *, struct type *, |
e7c27a73 | 1677 | struct dwarf2_cu *); |
c906108c | 1678 | |
a14ed312 | 1679 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1680 | struct type *, |
1681 | struct dwarf2_cu *); | |
c906108c | 1682 | |
134d01f1 | 1683 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1684 | |
e7c27a73 | 1685 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1686 | |
e7c27a73 | 1687 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1688 | |
5d7cb8df JK |
1689 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1690 | ||
22cee43f PMR |
1691 | static struct using_direct **using_directives (enum language); |
1692 | ||
27aa8d6a SW |
1693 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1694 | ||
74921315 KS |
1695 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1696 | ||
f55ee35c JK |
1697 | static struct type *read_module_type (struct die_info *die, |
1698 | struct dwarf2_cu *cu); | |
1699 | ||
38d518c9 | 1700 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1701 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1702 | |
134d01f1 | 1703 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1704 | |
e7c27a73 | 1705 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1706 | |
6e70227d | 1707 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1708 | struct dwarf2_cu *); |
1709 | ||
bf6af496 | 1710 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1711 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1712 | struct die_info *); |
639d11d3 | 1713 | |
dee91e82 | 1714 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1715 | const gdb_byte *info_ptr, |
1716 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1717 | struct die_info *parent); |
1718 | ||
d521ce57 TT |
1719 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1720 | struct die_info **, const gdb_byte *, | |
1721 | int *, int); | |
3019eac3 | 1722 | |
d521ce57 TT |
1723 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1724 | struct die_info **, const gdb_byte *, | |
1725 | int *); | |
93311388 | 1726 | |
e7c27a73 | 1727 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1728 | |
15d034d0 TT |
1729 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1730 | struct obstack *); | |
71c25dea | 1731 | |
15d034d0 | 1732 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1733 | |
15d034d0 | 1734 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1735 | struct die_info *die, |
1736 | struct dwarf2_cu *cu); | |
1737 | ||
ca69b9e6 DE |
1738 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1739 | struct dwarf2_cu *cu); | |
1740 | ||
e142c38c | 1741 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1742 | struct dwarf2_cu **); |
9219021c | 1743 | |
f39c6ffd | 1744 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1745 | |
f39c6ffd | 1746 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1747 | |
f39c6ffd | 1748 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1749 | |
a14ed312 | 1750 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1751 | |
f39c6ffd | 1752 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1753 | |
f9aca02d | 1754 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1755 | |
d97bc12b DE |
1756 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1757 | ||
1758 | static void dump_die_for_error (struct die_info *); | |
1759 | ||
1760 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1761 | struct die_info *); | |
c906108c | 1762 | |
d97bc12b | 1763 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1764 | |
51545339 | 1765 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1766 | struct dwarf2_cu *); |
c906108c | 1767 | |
ff39bb5e | 1768 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1769 | |
ff39bb5e | 1770 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1771 | |
348e048f | 1772 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1773 | const struct attribute *, |
348e048f DE |
1774 | struct dwarf2_cu **); |
1775 | ||
10b3939b | 1776 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1777 | const struct attribute *, |
f2f0e013 | 1778 | struct dwarf2_cu **); |
c906108c | 1779 | |
348e048f | 1780 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1781 | const struct attribute *, |
348e048f DE |
1782 | struct dwarf2_cu **); |
1783 | ||
ac9ec31b DE |
1784 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1785 | struct dwarf2_cu *); | |
1786 | ||
1787 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1788 | const struct attribute *, |
ac9ec31b DE |
1789 | struct dwarf2_cu *); |
1790 | ||
e5fe5e75 | 1791 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1792 | |
52dc124a | 1793 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1794 | |
63e43d3a PMR |
1795 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1796 | struct die_info *die, struct dwarf2_cu *cu, | |
1797 | struct dynamic_prop *prop); | |
1798 | ||
c906108c SS |
1799 | /* memory allocation interface */ |
1800 | ||
7b5a2f43 | 1801 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1802 | |
b60c80d6 | 1803 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1804 | |
43f3e411 | 1805 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1806 | |
6e5a29e1 | 1807 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1808 | |
6e5a29e1 | 1809 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1810 | |
6e5a29e1 | 1811 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1812 | |
6e5a29e1 | 1813 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1814 | |
8cf6f0b1 TT |
1815 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1816 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1817 | const struct attribute *attr); |
8cf6f0b1 | 1818 | |
ff39bb5e | 1819 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1820 | struct symbol *sym, |
f1e6e072 TT |
1821 | struct dwarf2_cu *cu, |
1822 | int is_block); | |
4c2df51b | 1823 | |
d521ce57 TT |
1824 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1825 | const gdb_byte *info_ptr, | |
1826 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1827 | |
72bf9492 DJ |
1828 | static void free_stack_comp_unit (void *); |
1829 | ||
72bf9492 DJ |
1830 | static hashval_t partial_die_hash (const void *item); |
1831 | ||
1832 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1833 | ||
ae038cb0 | 1834 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1835 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1836 | |
9816fde3 | 1837 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1838 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1839 | |
1840 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1841 | struct die_info *comp_unit_die, |
1842 | enum language pretend_language); | |
93311388 | 1843 | |
68dc6402 | 1844 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1845 | |
1846 | static void free_cached_comp_units (void *); | |
1847 | ||
1848 | static void age_cached_comp_units (void); | |
1849 | ||
dee91e82 | 1850 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1851 | |
f792889a DJ |
1852 | static struct type *set_die_type (struct die_info *, struct type *, |
1853 | struct dwarf2_cu *); | |
1c379e20 | 1854 | |
ae038cb0 DJ |
1855 | static void create_all_comp_units (struct objfile *); |
1856 | ||
0e50663e | 1857 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1858 | |
95554aad TT |
1859 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1860 | enum language); | |
10b3939b | 1861 | |
95554aad TT |
1862 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1863 | enum language); | |
10b3939b | 1864 | |
f4dc4d17 DE |
1865 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1866 | enum language); | |
1867 | ||
10b3939b DJ |
1868 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1869 | struct dwarf2_per_cu_data *); | |
1870 | ||
ae038cb0 DJ |
1871 | static void dwarf2_mark (struct dwarf2_cu *); |
1872 | ||
1873 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1874 | ||
b64f50a1 | 1875 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1876 | struct dwarf2_per_cu_data *); |
673bfd45 | 1877 | |
f792889a | 1878 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1879 | |
9291a0cd TT |
1880 | static void dwarf2_release_queue (void *dummy); |
1881 | ||
95554aad TT |
1882 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1883 | enum language pretend_language); | |
1884 | ||
a0f42c21 | 1885 | static void process_queue (void); |
9291a0cd TT |
1886 | |
1887 | static void find_file_and_directory (struct die_info *die, | |
1888 | struct dwarf2_cu *cu, | |
15d034d0 | 1889 | const char **name, const char **comp_dir); |
9291a0cd TT |
1890 | |
1891 | static char *file_full_name (int file, struct line_header *lh, | |
1892 | const char *comp_dir); | |
1893 | ||
43988095 JK |
1894 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1895 | enum class rcuh_kind { COMPILE, TYPE }; | |
1896 | ||
d521ce57 | 1897 | static const gdb_byte *read_and_check_comp_unit_head |
36586728 TT |
1898 | (struct comp_unit_head *header, |
1899 | struct dwarf2_section_info *section, | |
d521ce57 | 1900 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 1901 | rcuh_kind section_kind); |
36586728 | 1902 | |
fd820528 | 1903 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1904 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1905 | int use_existing_cu, int keep, | |
3019eac3 DE |
1906 | die_reader_func_ftype *die_reader_func, void *data); |
1907 | ||
dee91e82 DE |
1908 | static void init_cutu_and_read_dies_simple |
1909 | (struct dwarf2_per_cu_data *this_cu, | |
1910 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1911 | |
673bfd45 | 1912 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1913 | |
3019eac3 DE |
1914 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1915 | ||
57d63ce2 DE |
1916 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
1917 | (struct dwp_file *dwp_file, const char *comp_dir, | |
1918 | ULONGEST signature, int is_debug_types); | |
a2ce51a0 DE |
1919 | |
1920 | static struct dwp_file *get_dwp_file (void); | |
1921 | ||
3019eac3 | 1922 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1923 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1924 | |
1925 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1926 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1927 | |
89e63ee4 DE |
1928 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1929 | ||
3019eac3 DE |
1930 | static void free_dwo_file_cleanup (void *); |
1931 | ||
95554aad TT |
1932 | static void process_cu_includes (void); |
1933 | ||
1b80a9fa | 1934 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1935 | |
1936 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1937 | \f |
1938 | /* Various complaints about symbol reading that don't abort the process. */ | |
1939 | ||
1940 | static void | |
1941 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1942 | { | |
1943 | complaint (&symfile_complaints, | |
1944 | _("statement list doesn't fit in .debug_line section")); | |
1945 | } | |
1946 | ||
1947 | static void | |
1948 | dwarf2_debug_line_missing_file_complaint (void) | |
1949 | { | |
1950 | complaint (&symfile_complaints, | |
1951 | _(".debug_line section has line data without a file")); | |
1952 | } | |
1953 | ||
1954 | static void | |
1955 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1956 | { | |
1957 | complaint (&symfile_complaints, | |
1958 | _(".debug_line section has line " | |
1959 | "program sequence without an end")); | |
1960 | } | |
1961 | ||
1962 | static void | |
1963 | dwarf2_complex_location_expr_complaint (void) | |
1964 | { | |
1965 | complaint (&symfile_complaints, _("location expression too complex")); | |
1966 | } | |
1967 | ||
1968 | static void | |
1969 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1970 | int arg3) | |
1971 | { | |
1972 | complaint (&symfile_complaints, | |
1973 | _("const value length mismatch for '%s', got %d, expected %d"), | |
1974 | arg1, arg2, arg3); | |
1975 | } | |
1976 | ||
1977 | static void | |
1978 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1979 | { | |
1980 | complaint (&symfile_complaints, | |
1981 | _("debug info runs off end of %s section" | |
1982 | " [in module %s]"), | |
a32a8923 DE |
1983 | get_section_name (section), |
1984 | get_section_file_name (section)); | |
4390d890 | 1985 | } |
1b80a9fa | 1986 | |
4390d890 DE |
1987 | static void |
1988 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1989 | { | |
1990 | complaint (&symfile_complaints, | |
1991 | _("macro debug info contains a " | |
1992 | "malformed macro definition:\n`%s'"), | |
1993 | arg1); | |
1994 | } | |
1995 | ||
1996 | static void | |
1997 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1998 | { | |
1999 | complaint (&symfile_complaints, | |
2000 | _("invalid attribute class or form for '%s' in '%s'"), | |
2001 | arg1, arg2); | |
2002 | } | |
527f3840 JK |
2003 | |
2004 | /* Hash function for line_header_hash. */ | |
2005 | ||
2006 | static hashval_t | |
2007 | line_header_hash (const struct line_header *ofs) | |
2008 | { | |
2009 | return ofs->offset.sect_off ^ ofs->offset_in_dwz; | |
2010 | } | |
2011 | ||
2012 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2013 | ||
2014 | static hashval_t | |
2015 | line_header_hash_voidp (const void *item) | |
2016 | { | |
9a3c8263 | 2017 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2018 | |
2019 | return line_header_hash (ofs); | |
2020 | } | |
2021 | ||
2022 | /* Equality function for line_header_hash. */ | |
2023 | ||
2024 | static int | |
2025 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2026 | { | |
9a3c8263 SM |
2027 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2028 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 JK |
2029 | |
2030 | return (ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off | |
2031 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); | |
2032 | } | |
2033 | ||
4390d890 | 2034 | \f |
9291a0cd TT |
2035 | #if WORDS_BIGENDIAN |
2036 | ||
2037 | /* Convert VALUE between big- and little-endian. */ | |
2038 | static offset_type | |
2039 | byte_swap (offset_type value) | |
2040 | { | |
2041 | offset_type result; | |
2042 | ||
2043 | result = (value & 0xff) << 24; | |
2044 | result |= (value & 0xff00) << 8; | |
2045 | result |= (value & 0xff0000) >> 8; | |
2046 | result |= (value & 0xff000000) >> 24; | |
2047 | return result; | |
2048 | } | |
2049 | ||
2050 | #define MAYBE_SWAP(V) byte_swap (V) | |
2051 | ||
2052 | #else | |
2053 | #define MAYBE_SWAP(V) (V) | |
2054 | #endif /* WORDS_BIGENDIAN */ | |
2055 | ||
31aa7e4e JB |
2056 | /* Read the given attribute value as an address, taking the attribute's |
2057 | form into account. */ | |
2058 | ||
2059 | static CORE_ADDR | |
2060 | attr_value_as_address (struct attribute *attr) | |
2061 | { | |
2062 | CORE_ADDR addr; | |
2063 | ||
2064 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2065 | { | |
2066 | /* Aside from a few clearly defined exceptions, attributes that | |
2067 | contain an address must always be in DW_FORM_addr form. | |
2068 | Unfortunately, some compilers happen to be violating this | |
2069 | requirement by encoding addresses using other forms, such | |
2070 | as DW_FORM_data4 for example. For those broken compilers, | |
2071 | we try to do our best, without any guarantee of success, | |
2072 | to interpret the address correctly. It would also be nice | |
2073 | to generate a complaint, but that would require us to maintain | |
2074 | a list of legitimate cases where a non-address form is allowed, | |
2075 | as well as update callers to pass in at least the CU's DWARF | |
2076 | version. This is more overhead than what we're willing to | |
2077 | expand for a pretty rare case. */ | |
2078 | addr = DW_UNSND (attr); | |
2079 | } | |
2080 | else | |
2081 | addr = DW_ADDR (attr); | |
2082 | ||
2083 | return addr; | |
2084 | } | |
2085 | ||
9291a0cd TT |
2086 | /* The suffix for an index file. */ |
2087 | #define INDEX_SUFFIX ".gdb-index" | |
2088 | ||
c906108c | 2089 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2090 | information and return true if we have enough to do something. |
2091 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2092 | ELF names are used. */ | |
c906108c SS |
2093 | |
2094 | int | |
251d32d9 TG |
2095 | dwarf2_has_info (struct objfile *objfile, |
2096 | const struct dwarf2_debug_sections *names) | |
c906108c | 2097 | { |
9a3c8263 SM |
2098 | dwarf2_per_objfile = ((struct dwarf2_per_objfile *) |
2099 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
be391dca TT |
2100 | if (!dwarf2_per_objfile) |
2101 | { | |
2102 | /* Initialize per-objfile state. */ | |
2103 | struct dwarf2_per_objfile *data | |
8d749320 | 2104 | = XOBNEW (&objfile->objfile_obstack, struct dwarf2_per_objfile); |
9a619af0 | 2105 | |
be391dca TT |
2106 | memset (data, 0, sizeof (*data)); |
2107 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
2108 | dwarf2_per_objfile = data; | |
6502dd73 | 2109 | |
251d32d9 TG |
2110 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
2111 | (void *) names); | |
be391dca TT |
2112 | dwarf2_per_objfile->objfile = objfile; |
2113 | } | |
73869dc2 | 2114 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2115 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2116 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2117 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2118 | } |
2119 | ||
2120 | /* Return the containing section of virtual section SECTION. */ | |
2121 | ||
2122 | static struct dwarf2_section_info * | |
2123 | get_containing_section (const struct dwarf2_section_info *section) | |
2124 | { | |
2125 | gdb_assert (section->is_virtual); | |
2126 | return section->s.containing_section; | |
c906108c SS |
2127 | } |
2128 | ||
a32a8923 DE |
2129 | /* Return the bfd owner of SECTION. */ |
2130 | ||
2131 | static struct bfd * | |
2132 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2133 | { | |
73869dc2 DE |
2134 | if (section->is_virtual) |
2135 | { | |
2136 | section = get_containing_section (section); | |
2137 | gdb_assert (!section->is_virtual); | |
2138 | } | |
049412e3 | 2139 | return section->s.section->owner; |
a32a8923 DE |
2140 | } |
2141 | ||
2142 | /* Return the bfd section of SECTION. | |
2143 | Returns NULL if the section is not present. */ | |
2144 | ||
2145 | static asection * | |
2146 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2147 | { | |
73869dc2 DE |
2148 | if (section->is_virtual) |
2149 | { | |
2150 | section = get_containing_section (section); | |
2151 | gdb_assert (!section->is_virtual); | |
2152 | } | |
049412e3 | 2153 | return section->s.section; |
a32a8923 DE |
2154 | } |
2155 | ||
2156 | /* Return the name of SECTION. */ | |
2157 | ||
2158 | static const char * | |
2159 | get_section_name (const struct dwarf2_section_info *section) | |
2160 | { | |
2161 | asection *sectp = get_section_bfd_section (section); | |
2162 | ||
2163 | gdb_assert (sectp != NULL); | |
2164 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2165 | } | |
2166 | ||
2167 | /* Return the name of the file SECTION is in. */ | |
2168 | ||
2169 | static const char * | |
2170 | get_section_file_name (const struct dwarf2_section_info *section) | |
2171 | { | |
2172 | bfd *abfd = get_section_bfd_owner (section); | |
2173 | ||
2174 | return bfd_get_filename (abfd); | |
2175 | } | |
2176 | ||
2177 | /* Return the id of SECTION. | |
2178 | Returns 0 if SECTION doesn't exist. */ | |
2179 | ||
2180 | static int | |
2181 | get_section_id (const struct dwarf2_section_info *section) | |
2182 | { | |
2183 | asection *sectp = get_section_bfd_section (section); | |
2184 | ||
2185 | if (sectp == NULL) | |
2186 | return 0; | |
2187 | return sectp->id; | |
2188 | } | |
2189 | ||
2190 | /* Return the flags of SECTION. | |
73869dc2 | 2191 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2192 | |
2193 | static int | |
2194 | get_section_flags (const struct dwarf2_section_info *section) | |
2195 | { | |
2196 | asection *sectp = get_section_bfd_section (section); | |
2197 | ||
2198 | gdb_assert (sectp != NULL); | |
2199 | return bfd_get_section_flags (sectp->owner, sectp); | |
2200 | } | |
2201 | ||
251d32d9 TG |
2202 | /* When loading sections, we look either for uncompressed section or for |
2203 | compressed section names. */ | |
233a11ab CS |
2204 | |
2205 | static int | |
251d32d9 TG |
2206 | section_is_p (const char *section_name, |
2207 | const struct dwarf2_section_names *names) | |
233a11ab | 2208 | { |
251d32d9 TG |
2209 | if (names->normal != NULL |
2210 | && strcmp (section_name, names->normal) == 0) | |
2211 | return 1; | |
2212 | if (names->compressed != NULL | |
2213 | && strcmp (section_name, names->compressed) == 0) | |
2214 | return 1; | |
2215 | return 0; | |
233a11ab CS |
2216 | } |
2217 | ||
c906108c SS |
2218 | /* This function is mapped across the sections and remembers the |
2219 | offset and size of each of the debugging sections we are interested | |
2220 | in. */ | |
2221 | ||
2222 | static void | |
251d32d9 | 2223 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 2224 | { |
251d32d9 | 2225 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 2226 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
2227 | |
2228 | if (vnames == NULL) | |
2229 | names = &dwarf2_elf_names; | |
2230 | else | |
2231 | names = (const struct dwarf2_debug_sections *) vnames; | |
2232 | ||
dc7650b8 JK |
2233 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2234 | { | |
2235 | } | |
2236 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 2237 | { |
049412e3 | 2238 | dwarf2_per_objfile->info.s.section = sectp; |
dce234bc | 2239 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); |
c906108c | 2240 | } |
251d32d9 | 2241 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 2242 | { |
049412e3 | 2243 | dwarf2_per_objfile->abbrev.s.section = sectp; |
dce234bc | 2244 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); |
c906108c | 2245 | } |
251d32d9 | 2246 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 2247 | { |
049412e3 | 2248 | dwarf2_per_objfile->line.s.section = sectp; |
dce234bc | 2249 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); |
c906108c | 2250 | } |
251d32d9 | 2251 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 2252 | { |
049412e3 | 2253 | dwarf2_per_objfile->loc.s.section = sectp; |
dce234bc | 2254 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); |
c906108c | 2255 | } |
43988095 JK |
2256 | else if (section_is_p (sectp->name, &names->loclists)) |
2257 | { | |
2258 | dwarf2_per_objfile->loclists.s.section = sectp; | |
2259 | dwarf2_per_objfile->loclists.size = bfd_get_section_size (sectp); | |
2260 | } | |
251d32d9 | 2261 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 2262 | { |
049412e3 | 2263 | dwarf2_per_objfile->macinfo.s.section = sectp; |
dce234bc | 2264 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); |
c906108c | 2265 | } |
cf2c3c16 TT |
2266 | else if (section_is_p (sectp->name, &names->macro)) |
2267 | { | |
049412e3 | 2268 | dwarf2_per_objfile->macro.s.section = sectp; |
cf2c3c16 TT |
2269 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); |
2270 | } | |
251d32d9 | 2271 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 2272 | { |
049412e3 | 2273 | dwarf2_per_objfile->str.s.section = sectp; |
dce234bc | 2274 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); |
c906108c | 2275 | } |
43988095 JK |
2276 | else if (section_is_p (sectp->name, &names->line_str)) |
2277 | { | |
2278 | dwarf2_per_objfile->line_str.s.section = sectp; | |
2279 | dwarf2_per_objfile->line_str.size = bfd_get_section_size (sectp); | |
2280 | } | |
3019eac3 DE |
2281 | else if (section_is_p (sectp->name, &names->addr)) |
2282 | { | |
049412e3 | 2283 | dwarf2_per_objfile->addr.s.section = sectp; |
3019eac3 DE |
2284 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); |
2285 | } | |
251d32d9 | 2286 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 2287 | { |
049412e3 | 2288 | dwarf2_per_objfile->frame.s.section = sectp; |
dce234bc | 2289 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2290 | } |
251d32d9 | 2291 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 2292 | { |
049412e3 | 2293 | dwarf2_per_objfile->eh_frame.s.section = sectp; |
dc7650b8 | 2294 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2295 | } |
251d32d9 | 2296 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 2297 | { |
049412e3 | 2298 | dwarf2_per_objfile->ranges.s.section = sectp; |
dce234bc | 2299 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); |
af34e669 | 2300 | } |
43988095 JK |
2301 | else if (section_is_p (sectp->name, &names->rnglists)) |
2302 | { | |
2303 | dwarf2_per_objfile->rnglists.s.section = sectp; | |
2304 | dwarf2_per_objfile->rnglists.size = bfd_get_section_size (sectp); | |
2305 | } | |
251d32d9 | 2306 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 2307 | { |
8b70b953 TT |
2308 | struct dwarf2_section_info type_section; |
2309 | ||
2310 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2311 | type_section.s.section = sectp; |
8b70b953 TT |
2312 | type_section.size = bfd_get_section_size (sectp); |
2313 | ||
2314 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
2315 | &type_section); | |
348e048f | 2316 | } |
251d32d9 | 2317 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd | 2318 | { |
049412e3 | 2319 | dwarf2_per_objfile->gdb_index.s.section = sectp; |
9291a0cd TT |
2320 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); |
2321 | } | |
dce234bc | 2322 | |
b4e1fd61 | 2323 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 FR |
2324 | && bfd_section_vma (abfd, sectp) == 0) |
2325 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
2326 | } |
2327 | ||
fceca515 DE |
2328 | /* A helper function that decides whether a section is empty, |
2329 | or not present. */ | |
9e0ac564 TT |
2330 | |
2331 | static int | |
19ac8c2e | 2332 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2333 | { |
73869dc2 DE |
2334 | if (section->is_virtual) |
2335 | return section->size == 0; | |
049412e3 | 2336 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2337 | } |
2338 | ||
3019eac3 DE |
2339 | /* Read the contents of the section INFO. |
2340 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2341 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2342 | of the DWO file. | |
dce234bc | 2343 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2344 | |
dce234bc PP |
2345 | static void |
2346 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2347 | { |
a32a8923 | 2348 | asection *sectp; |
3019eac3 | 2349 | bfd *abfd; |
dce234bc | 2350 | gdb_byte *buf, *retbuf; |
c906108c | 2351 | |
be391dca TT |
2352 | if (info->readin) |
2353 | return; | |
dce234bc | 2354 | info->buffer = NULL; |
be391dca | 2355 | info->readin = 1; |
188dd5d6 | 2356 | |
9e0ac564 | 2357 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2358 | return; |
c906108c | 2359 | |
a32a8923 | 2360 | sectp = get_section_bfd_section (info); |
3019eac3 | 2361 | |
73869dc2 DE |
2362 | /* If this is a virtual section we need to read in the real one first. */ |
2363 | if (info->is_virtual) | |
2364 | { | |
2365 | struct dwarf2_section_info *containing_section = | |
2366 | get_containing_section (info); | |
2367 | ||
2368 | gdb_assert (sectp != NULL); | |
2369 | if ((sectp->flags & SEC_RELOC) != 0) | |
2370 | { | |
2371 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2372 | " supported in section %s [in module %s]"), | |
2373 | get_section_name (info), get_section_file_name (info)); | |
2374 | } | |
2375 | dwarf2_read_section (objfile, containing_section); | |
2376 | /* Other code should have already caught virtual sections that don't | |
2377 | fit. */ | |
2378 | gdb_assert (info->virtual_offset + info->size | |
2379 | <= containing_section->size); | |
2380 | /* If the real section is empty or there was a problem reading the | |
2381 | section we shouldn't get here. */ | |
2382 | gdb_assert (containing_section->buffer != NULL); | |
2383 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2384 | return; | |
2385 | } | |
2386 | ||
4bf44c1c TT |
2387 | /* If the section has relocations, we must read it ourselves. |
2388 | Otherwise we attach it to the BFD. */ | |
2389 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2390 | { |
d521ce57 | 2391 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2392 | return; |
dce234bc | 2393 | } |
dce234bc | 2394 | |
224c3ddb | 2395 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2396 | info->buffer = buf; |
dce234bc PP |
2397 | |
2398 | /* When debugging .o files, we may need to apply relocations; see | |
2399 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2400 | We never compress sections in .o files, so we only need to | |
2401 | try this when the section is not compressed. */ | |
ac8035ab | 2402 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2403 | if (retbuf != NULL) |
2404 | { | |
2405 | info->buffer = retbuf; | |
2406 | return; | |
2407 | } | |
2408 | ||
a32a8923 DE |
2409 | abfd = get_section_bfd_owner (info); |
2410 | gdb_assert (abfd != NULL); | |
2411 | ||
dce234bc PP |
2412 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2413 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2414 | { |
2415 | error (_("Dwarf Error: Can't read DWARF data" | |
2416 | " in section %s [in module %s]"), | |
2417 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2418 | } | |
dce234bc PP |
2419 | } |
2420 | ||
9e0ac564 TT |
2421 | /* A helper function that returns the size of a section in a safe way. |
2422 | If you are positive that the section has been read before using the | |
2423 | size, then it is safe to refer to the dwarf2_section_info object's | |
2424 | "size" field directly. In other cases, you must call this | |
2425 | function, because for compressed sections the size field is not set | |
2426 | correctly until the section has been read. */ | |
2427 | ||
2428 | static bfd_size_type | |
2429 | dwarf2_section_size (struct objfile *objfile, | |
2430 | struct dwarf2_section_info *info) | |
2431 | { | |
2432 | if (!info->readin) | |
2433 | dwarf2_read_section (objfile, info); | |
2434 | return info->size; | |
2435 | } | |
2436 | ||
dce234bc | 2437 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2438 | SECTION_NAME. */ |
af34e669 | 2439 | |
dce234bc | 2440 | void |
3017a003 TG |
2441 | dwarf2_get_section_info (struct objfile *objfile, |
2442 | enum dwarf2_section_enum sect, | |
d521ce57 | 2443 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2444 | bfd_size_type *sizep) |
2445 | { | |
2446 | struct dwarf2_per_objfile *data | |
9a3c8263 SM |
2447 | = (struct dwarf2_per_objfile *) objfile_data (objfile, |
2448 | dwarf2_objfile_data_key); | |
dce234bc | 2449 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2450 | |
2451 | /* We may see an objfile without any DWARF, in which case we just | |
2452 | return nothing. */ | |
2453 | if (data == NULL) | |
2454 | { | |
2455 | *sectp = NULL; | |
2456 | *bufp = NULL; | |
2457 | *sizep = 0; | |
2458 | return; | |
2459 | } | |
3017a003 TG |
2460 | switch (sect) |
2461 | { | |
2462 | case DWARF2_DEBUG_FRAME: | |
2463 | info = &data->frame; | |
2464 | break; | |
2465 | case DWARF2_EH_FRAME: | |
2466 | info = &data->eh_frame; | |
2467 | break; | |
2468 | default: | |
2469 | gdb_assert_not_reached ("unexpected section"); | |
2470 | } | |
dce234bc | 2471 | |
9e0ac564 | 2472 | dwarf2_read_section (objfile, info); |
dce234bc | 2473 | |
a32a8923 | 2474 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2475 | *bufp = info->buffer; |
2476 | *sizep = info->size; | |
2477 | } | |
2478 | ||
36586728 TT |
2479 | /* A helper function to find the sections for a .dwz file. */ |
2480 | ||
2481 | static void | |
2482 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2483 | { | |
9a3c8263 | 2484 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2485 | |
2486 | /* Note that we only support the standard ELF names, because .dwz | |
2487 | is ELF-only (at the time of writing). */ | |
2488 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2489 | { | |
049412e3 | 2490 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2491 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2492 | } | |
2493 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2494 | { | |
049412e3 | 2495 | dwz_file->info.s.section = sectp; |
36586728 TT |
2496 | dwz_file->info.size = bfd_get_section_size (sectp); |
2497 | } | |
2498 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2499 | { | |
049412e3 | 2500 | dwz_file->str.s.section = sectp; |
36586728 TT |
2501 | dwz_file->str.size = bfd_get_section_size (sectp); |
2502 | } | |
2503 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2504 | { | |
049412e3 | 2505 | dwz_file->line.s.section = sectp; |
36586728 TT |
2506 | dwz_file->line.size = bfd_get_section_size (sectp); |
2507 | } | |
2508 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2509 | { | |
049412e3 | 2510 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2511 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2512 | } | |
2ec9a5e0 TT |
2513 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2514 | { | |
049412e3 | 2515 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2516 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2517 | } | |
36586728 TT |
2518 | } |
2519 | ||
4db1a1dc TT |
2520 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2521 | there is no .gnu_debugaltlink section in the file. Error if there | |
2522 | is such a section but the file cannot be found. */ | |
36586728 TT |
2523 | |
2524 | static struct dwz_file * | |
2525 | dwarf2_get_dwz_file (void) | |
2526 | { | |
4db1a1dc | 2527 | char *data; |
36586728 TT |
2528 | struct cleanup *cleanup; |
2529 | const char *filename; | |
2530 | struct dwz_file *result; | |
acd13123 | 2531 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2532 | size_t buildid_len; |
2533 | bfd_byte *buildid; | |
36586728 TT |
2534 | |
2535 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2536 | return dwarf2_per_objfile->dwz_file; | |
2537 | ||
4db1a1dc TT |
2538 | bfd_set_error (bfd_error_no_error); |
2539 | data = bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
acd13123 | 2540 | &buildid_len_arg, &buildid); |
4db1a1dc TT |
2541 | if (data == NULL) |
2542 | { | |
2543 | if (bfd_get_error () == bfd_error_no_error) | |
2544 | return NULL; | |
2545 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2546 | bfd_errmsg (bfd_get_error ())); | |
2547 | } | |
36586728 | 2548 | cleanup = make_cleanup (xfree, data); |
dc294be5 | 2549 | make_cleanup (xfree, buildid); |
36586728 | 2550 | |
acd13123 TT |
2551 | buildid_len = (size_t) buildid_len_arg; |
2552 | ||
f9d83a0b | 2553 | filename = (const char *) data; |
36586728 TT |
2554 | if (!IS_ABSOLUTE_PATH (filename)) |
2555 | { | |
4262abfb | 2556 | char *abs = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); |
36586728 TT |
2557 | char *rel; |
2558 | ||
2559 | make_cleanup (xfree, abs); | |
2560 | abs = ldirname (abs); | |
2561 | make_cleanup (xfree, abs); | |
2562 | ||
2563 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2564 | make_cleanup (xfree, rel); | |
2565 | filename = rel; | |
2566 | } | |
2567 | ||
dc294be5 TT |
2568 | /* First try the file name given in the section. If that doesn't |
2569 | work, try to use the build-id instead. */ | |
192b62ce | 2570 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2571 | if (dwz_bfd != NULL) |
36586728 | 2572 | { |
192b62ce TT |
2573 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
2574 | dwz_bfd.release (); | |
36586728 TT |
2575 | } |
2576 | ||
dc294be5 TT |
2577 | if (dwz_bfd == NULL) |
2578 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2579 | ||
2580 | if (dwz_bfd == NULL) | |
2581 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2582 | objfile_name (dwarf2_per_objfile->objfile)); | |
2583 | ||
36586728 TT |
2584 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
2585 | struct dwz_file); | |
192b62ce | 2586 | result->dwz_bfd = dwz_bfd.release (); |
36586728 | 2587 | |
192b62ce | 2588 | bfd_map_over_sections (result->dwz_bfd, locate_dwz_sections, result); |
36586728 TT |
2589 | |
2590 | do_cleanups (cleanup); | |
2591 | ||
192b62ce | 2592 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, result->dwz_bfd); |
8d2cc612 | 2593 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2594 | return result; |
2595 | } | |
9291a0cd | 2596 | \f |
7b9f3c50 DE |
2597 | /* DWARF quick_symbols_functions support. */ |
2598 | ||
2599 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2600 | unique line tables, so we maintain a separate table of all .debug_line | |
2601 | derived entries to support the sharing. | |
2602 | All the quick functions need is the list of file names. We discard the | |
2603 | line_header when we're done and don't need to record it here. */ | |
2604 | struct quick_file_names | |
2605 | { | |
094b34ac DE |
2606 | /* The data used to construct the hash key. */ |
2607 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2608 | |
2609 | /* The number of entries in file_names, real_names. */ | |
2610 | unsigned int num_file_names; | |
2611 | ||
2612 | /* The file names from the line table, after being run through | |
2613 | file_full_name. */ | |
2614 | const char **file_names; | |
2615 | ||
2616 | /* The file names from the line table after being run through | |
2617 | gdb_realpath. These are computed lazily. */ | |
2618 | const char **real_names; | |
2619 | }; | |
2620 | ||
2621 | /* When using the index (and thus not using psymtabs), each CU has an | |
2622 | object of this type. This is used to hold information needed by | |
2623 | the various "quick" methods. */ | |
2624 | struct dwarf2_per_cu_quick_data | |
2625 | { | |
2626 | /* The file table. This can be NULL if there was no file table | |
2627 | or it's currently not read in. | |
2628 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2629 | struct quick_file_names *file_names; | |
2630 | ||
2631 | /* The corresponding symbol table. This is NULL if symbols for this | |
2632 | CU have not yet been read. */ | |
43f3e411 | 2633 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2634 | |
2635 | /* A temporary mark bit used when iterating over all CUs in | |
2636 | expand_symtabs_matching. */ | |
2637 | unsigned int mark : 1; | |
2638 | ||
2639 | /* True if we've tried to read the file table and found there isn't one. | |
2640 | There will be no point in trying to read it again next time. */ | |
2641 | unsigned int no_file_data : 1; | |
2642 | }; | |
2643 | ||
094b34ac DE |
2644 | /* Utility hash function for a stmt_list_hash. */ |
2645 | ||
2646 | static hashval_t | |
2647 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2648 | { | |
2649 | hashval_t v = 0; | |
2650 | ||
2651 | if (stmt_list_hash->dwo_unit != NULL) | |
2652 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2653 | v += stmt_list_hash->line_offset.sect_off; | |
2654 | return v; | |
2655 | } | |
2656 | ||
2657 | /* Utility equality function for a stmt_list_hash. */ | |
2658 | ||
2659 | static int | |
2660 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2661 | const struct stmt_list_hash *rhs) | |
2662 | { | |
2663 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2664 | return 0; | |
2665 | if (lhs->dwo_unit != NULL | |
2666 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2667 | return 0; | |
2668 | ||
2669 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2670 | } | |
2671 | ||
7b9f3c50 DE |
2672 | /* Hash function for a quick_file_names. */ |
2673 | ||
2674 | static hashval_t | |
2675 | hash_file_name_entry (const void *e) | |
2676 | { | |
9a3c8263 SM |
2677 | const struct quick_file_names *file_data |
2678 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2679 | |
094b34ac | 2680 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2681 | } |
2682 | ||
2683 | /* Equality function for a quick_file_names. */ | |
2684 | ||
2685 | static int | |
2686 | eq_file_name_entry (const void *a, const void *b) | |
2687 | { | |
9a3c8263 SM |
2688 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2689 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2690 | |
094b34ac | 2691 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2692 | } |
2693 | ||
2694 | /* Delete function for a quick_file_names. */ | |
2695 | ||
2696 | static void | |
2697 | delete_file_name_entry (void *e) | |
2698 | { | |
9a3c8263 | 2699 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2700 | int i; |
2701 | ||
2702 | for (i = 0; i < file_data->num_file_names; ++i) | |
2703 | { | |
2704 | xfree ((void*) file_data->file_names[i]); | |
2705 | if (file_data->real_names) | |
2706 | xfree ((void*) file_data->real_names[i]); | |
2707 | } | |
2708 | ||
2709 | /* The space for the struct itself lives on objfile_obstack, | |
2710 | so we don't free it here. */ | |
2711 | } | |
2712 | ||
2713 | /* Create a quick_file_names hash table. */ | |
2714 | ||
2715 | static htab_t | |
2716 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2717 | { | |
2718 | return htab_create_alloc (nr_initial_entries, | |
2719 | hash_file_name_entry, eq_file_name_entry, | |
2720 | delete_file_name_entry, xcalloc, xfree); | |
2721 | } | |
9291a0cd | 2722 | |
918dd910 JK |
2723 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2724 | have to be created afterwards. You should call age_cached_comp_units after | |
2725 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2726 | ||
2727 | static void | |
2728 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2729 | { | |
3019eac3 | 2730 | if (per_cu->is_debug_types) |
e5fe5e75 | 2731 | load_full_type_unit (per_cu); |
918dd910 | 2732 | else |
95554aad | 2733 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2734 | |
cc12ce38 DE |
2735 | if (per_cu->cu == NULL) |
2736 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2737 | |
2738 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2739 | } |
2740 | ||
a0f42c21 | 2741 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2742 | |
9291a0cd | 2743 | static void |
a0f42c21 | 2744 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2745 | { |
2746 | struct cleanup *back_to; | |
2747 | ||
f4dc4d17 DE |
2748 | /* Skip type_unit_groups, reading the type units they contain |
2749 | is handled elsewhere. */ | |
2750 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2751 | return; | |
2752 | ||
9291a0cd TT |
2753 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2754 | ||
95554aad | 2755 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2756 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2757 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2758 | { | |
2759 | queue_comp_unit (per_cu, language_minimal); | |
2760 | load_cu (per_cu); | |
89e63ee4 DE |
2761 | |
2762 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2763 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2764 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2765 | if (!per_cu->is_debug_types | |
cc12ce38 | 2766 | && per_cu->cu != NULL |
89e63ee4 DE |
2767 | && per_cu->cu->dwo_unit != NULL |
2768 | && dwarf2_per_objfile->index_table != NULL | |
2769 | && dwarf2_per_objfile->index_table->version <= 7 | |
2770 | /* DWP files aren't supported yet. */ | |
2771 | && get_dwp_file () == NULL) | |
2772 | queue_and_load_all_dwo_tus (per_cu); | |
95554aad | 2773 | } |
9291a0cd | 2774 | |
a0f42c21 | 2775 | process_queue (); |
9291a0cd TT |
2776 | |
2777 | /* Age the cache, releasing compilation units that have not | |
2778 | been used recently. */ | |
2779 | age_cached_comp_units (); | |
2780 | ||
2781 | do_cleanups (back_to); | |
2782 | } | |
2783 | ||
2784 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2785 | the objfile from which this CU came. Returns the resulting symbol | |
2786 | table. */ | |
2fdf6df6 | 2787 | |
43f3e411 | 2788 | static struct compunit_symtab * |
a0f42c21 | 2789 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2790 | { |
95554aad | 2791 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2792 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
2793 | { |
2794 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2795 | increment_reading_symtab (); | |
a0f42c21 | 2796 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2797 | process_cu_includes (); |
9291a0cd TT |
2798 | do_cleanups (back_to); |
2799 | } | |
f194fefb | 2800 | |
43f3e411 | 2801 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2802 | } |
2803 | ||
8832e7e3 | 2804 | /* Return the CU/TU given its index. |
f4dc4d17 DE |
2805 | |
2806 | This is intended for loops like: | |
2807 | ||
2808 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2809 | + dwarf2_per_objfile->n_type_units); ++i) | |
2810 | { | |
8832e7e3 | 2811 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
f4dc4d17 DE |
2812 | |
2813 | ...; | |
2814 | } | |
2815 | */ | |
2fdf6df6 | 2816 | |
1fd400ff | 2817 | static struct dwarf2_per_cu_data * |
8832e7e3 | 2818 | dw2_get_cutu (int index) |
1fd400ff TT |
2819 | { |
2820 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2821 | { | |
f4dc4d17 | 2822 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2823 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2824 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2825 | } |
2826 | ||
2827 | return dwarf2_per_objfile->all_comp_units[index]; | |
2828 | } | |
2829 | ||
8832e7e3 DE |
2830 | /* Return the CU given its index. |
2831 | This differs from dw2_get_cutu in that it's for when you know INDEX | |
2832 | refers to a CU. */ | |
f4dc4d17 DE |
2833 | |
2834 | static struct dwarf2_per_cu_data * | |
8832e7e3 | 2835 | dw2_get_cu (int index) |
f4dc4d17 | 2836 | { |
8832e7e3 | 2837 | gdb_assert (index >= 0 && index < dwarf2_per_objfile->n_comp_units); |
f4dc4d17 | 2838 | |
1fd400ff TT |
2839 | return dwarf2_per_objfile->all_comp_units[index]; |
2840 | } | |
2841 | ||
2ec9a5e0 TT |
2842 | /* A helper for create_cus_from_index that handles a given list of |
2843 | CUs. */ | |
2fdf6df6 | 2844 | |
74a0d9f6 | 2845 | static void |
2ec9a5e0 TT |
2846 | create_cus_from_index_list (struct objfile *objfile, |
2847 | const gdb_byte *cu_list, offset_type n_elements, | |
2848 | struct dwarf2_section_info *section, | |
2849 | int is_dwz, | |
2850 | int base_offset) | |
9291a0cd TT |
2851 | { |
2852 | offset_type i; | |
9291a0cd | 2853 | |
2ec9a5e0 | 2854 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2855 | { |
2856 | struct dwarf2_per_cu_data *the_cu; | |
2857 | ULONGEST offset, length; | |
2858 | ||
74a0d9f6 JK |
2859 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2860 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2861 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2862 | cu_list += 2 * 8; |
2863 | ||
2864 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2865 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2866 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2867 | the_cu->length = length; |
2868 | the_cu->objfile = objfile; | |
8a0459fd | 2869 | the_cu->section = section; |
9291a0cd TT |
2870 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2871 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2872 | the_cu->is_dwz = is_dwz; |
2873 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2874 | } |
9291a0cd TT |
2875 | } |
2876 | ||
2ec9a5e0 | 2877 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2878 | the CU objects for this objfile. */ |
2ec9a5e0 | 2879 | |
74a0d9f6 | 2880 | static void |
2ec9a5e0 TT |
2881 | create_cus_from_index (struct objfile *objfile, |
2882 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2883 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2884 | { | |
2885 | struct dwz_file *dwz; | |
2886 | ||
2887 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
8d749320 SM |
2888 | dwarf2_per_objfile->all_comp_units = |
2889 | XOBNEWVEC (&objfile->objfile_obstack, struct dwarf2_per_cu_data *, | |
2890 | dwarf2_per_objfile->n_comp_units); | |
2ec9a5e0 | 2891 | |
74a0d9f6 JK |
2892 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2893 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2894 | |
2895 | if (dwz_elements == 0) | |
74a0d9f6 | 2896 | return; |
2ec9a5e0 TT |
2897 | |
2898 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2899 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2900 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2901 | } |
2902 | ||
1fd400ff | 2903 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2904 | |
74a0d9f6 | 2905 | static void |
673bfd45 | 2906 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2907 | struct dwarf2_section_info *section, |
673bfd45 DE |
2908 | const gdb_byte *bytes, |
2909 | offset_type elements) | |
1fd400ff TT |
2910 | { |
2911 | offset_type i; | |
673bfd45 | 2912 | htab_t sig_types_hash; |
1fd400ff | 2913 | |
6aa5f3a6 DE |
2914 | dwarf2_per_objfile->n_type_units |
2915 | = dwarf2_per_objfile->n_allocated_type_units | |
2916 | = elements / 3; | |
8d749320 SM |
2917 | dwarf2_per_objfile->all_type_units = |
2918 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
1fd400ff | 2919 | |
673bfd45 | 2920 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2921 | |
2922 | for (i = 0; i < elements; i += 3) | |
2923 | { | |
52dc124a DE |
2924 | struct signatured_type *sig_type; |
2925 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2926 | void **slot; |
2927 | ||
74a0d9f6 JK |
2928 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2929 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2930 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2931 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2932 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2933 | bytes += 3 * 8; | |
2934 | ||
52dc124a | 2935 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2936 | struct signatured_type); |
52dc124a | 2937 | sig_type->signature = signature; |
3019eac3 DE |
2938 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2939 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 2940 | sig_type->per_cu.section = section; |
52dc124a DE |
2941 | sig_type->per_cu.offset.sect_off = offset; |
2942 | sig_type->per_cu.objfile = objfile; | |
2943 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2944 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2945 | struct dwarf2_per_cu_quick_data); | |
2946 | ||
52dc124a DE |
2947 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2948 | *slot = sig_type; | |
1fd400ff | 2949 | |
b4dd5633 | 2950 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2951 | } |
2952 | ||
673bfd45 | 2953 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2954 | } |
2955 | ||
9291a0cd TT |
2956 | /* Read the address map data from the mapped index, and use it to |
2957 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2958 | |
9291a0cd TT |
2959 | static void |
2960 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2961 | { | |
3e29f34a | 2962 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd TT |
2963 | const gdb_byte *iter, *end; |
2964 | struct obstack temp_obstack; | |
2965 | struct addrmap *mutable_map; | |
2966 | struct cleanup *cleanup; | |
2967 | CORE_ADDR baseaddr; | |
2968 | ||
2969 | obstack_init (&temp_obstack); | |
2970 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2971 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2972 | ||
2973 | iter = index->address_table; | |
2974 | end = iter + index->address_table_size; | |
2975 | ||
2976 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2977 | ||
2978 | while (iter < end) | |
2979 | { | |
2980 | ULONGEST hi, lo, cu_index; | |
2981 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2982 | iter += 8; | |
2983 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2984 | iter += 8; | |
2985 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2986 | iter += 4; | |
f652bce2 | 2987 | |
24a55014 | 2988 | if (lo > hi) |
f652bce2 | 2989 | { |
24a55014 DE |
2990 | complaint (&symfile_complaints, |
2991 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 2992 | hex_string (lo), hex_string (hi)); |
24a55014 | 2993 | continue; |
f652bce2 | 2994 | } |
24a55014 DE |
2995 | |
2996 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
2997 | { |
2998 | complaint (&symfile_complaints, | |
2999 | _(".gdb_index address table has invalid CU number %u"), | |
3000 | (unsigned) cu_index); | |
24a55014 | 3001 | continue; |
f652bce2 | 3002 | } |
24a55014 | 3003 | |
3e29f34a MR |
3004 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
3005 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
3006 | addrmap_set_empty (mutable_map, lo, hi - 1, dw2_get_cutu (cu_index)); | |
9291a0cd TT |
3007 | } |
3008 | ||
3009 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3010 | &objfile->objfile_obstack); | |
3011 | do_cleanups (cleanup); | |
3012 | } | |
3013 | ||
59d7bcaf JK |
3014 | /* The hash function for strings in the mapped index. This is the same as |
3015 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
3016 | implementation. This is necessary because the hash function is tied to the | |
3017 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
3018 | SYMBOL_HASH_NEXT. |
3019 | ||
3020 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 3021 | |
9291a0cd | 3022 | static hashval_t |
559a7a62 | 3023 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
3024 | { |
3025 | const unsigned char *str = (const unsigned char *) p; | |
3026 | hashval_t r = 0; | |
3027 | unsigned char c; | |
3028 | ||
3029 | while ((c = *str++) != 0) | |
559a7a62 JK |
3030 | { |
3031 | if (index_version >= 5) | |
3032 | c = tolower (c); | |
3033 | r = r * 67 + c - 113; | |
3034 | } | |
9291a0cd TT |
3035 | |
3036 | return r; | |
3037 | } | |
3038 | ||
3039 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
3040 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
3041 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 3042 | |
9291a0cd TT |
3043 | static int |
3044 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
3045 | offset_type **vec_out) | |
3046 | { | |
0cf03b49 JK |
3047 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
3048 | offset_type hash; | |
9291a0cd | 3049 | offset_type slot, step; |
559a7a62 | 3050 | int (*cmp) (const char *, const char *); |
9291a0cd | 3051 | |
0cf03b49 | 3052 | if (current_language->la_language == language_cplus |
45280282 IB |
3053 | || current_language->la_language == language_fortran |
3054 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3055 | { |
3056 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3057 | not contain any. */ | |
a8719064 | 3058 | |
72998fb3 | 3059 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3060 | { |
72998fb3 | 3061 | char *without_params = cp_remove_params (name); |
0cf03b49 | 3062 | |
72998fb3 DE |
3063 | if (without_params != NULL) |
3064 | { | |
3065 | make_cleanup (xfree, without_params); | |
3066 | name = without_params; | |
3067 | } | |
0cf03b49 JK |
3068 | } |
3069 | } | |
3070 | ||
559a7a62 | 3071 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3072 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3073 | simulate our NAME being searched is also lowercased. */ |
3074 | hash = mapped_index_string_hash ((index->version == 4 | |
3075 | && case_sensitivity == case_sensitive_off | |
3076 | ? 5 : index->version), | |
3077 | name); | |
3078 | ||
3876f04e DE |
3079 | slot = hash & (index->symbol_table_slots - 1); |
3080 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 3081 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3082 | |
3083 | for (;;) | |
3084 | { | |
3085 | /* Convert a slot number to an offset into the table. */ | |
3086 | offset_type i = 2 * slot; | |
3087 | const char *str; | |
3876f04e | 3088 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
3089 | { |
3090 | do_cleanups (back_to); | |
3091 | return 0; | |
3092 | } | |
9291a0cd | 3093 | |
3876f04e | 3094 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 3095 | if (!cmp (name, str)) |
9291a0cd TT |
3096 | { |
3097 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 3098 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 3099 | do_cleanups (back_to); |
9291a0cd TT |
3100 | return 1; |
3101 | } | |
3102 | ||
3876f04e | 3103 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
3104 | } |
3105 | } | |
3106 | ||
2ec9a5e0 TT |
3107 | /* A helper function that reads the .gdb_index from SECTION and fills |
3108 | in MAP. FILENAME is the name of the file containing the section; | |
3109 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
3110 | ok to use deprecated sections. | |
3111 | ||
3112 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3113 | out parameters that are filled in with information about the CU and | |
3114 | TU lists in the section. | |
3115 | ||
3116 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3117 | |
9291a0cd | 3118 | static int |
2ec9a5e0 TT |
3119 | read_index_from_section (struct objfile *objfile, |
3120 | const char *filename, | |
3121 | int deprecated_ok, | |
3122 | struct dwarf2_section_info *section, | |
3123 | struct mapped_index *map, | |
3124 | const gdb_byte **cu_list, | |
3125 | offset_type *cu_list_elements, | |
3126 | const gdb_byte **types_list, | |
3127 | offset_type *types_list_elements) | |
9291a0cd | 3128 | { |
948f8e3d | 3129 | const gdb_byte *addr; |
2ec9a5e0 | 3130 | offset_type version; |
b3b272e1 | 3131 | offset_type *metadata; |
1fd400ff | 3132 | int i; |
9291a0cd | 3133 | |
2ec9a5e0 | 3134 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3135 | return 0; |
82430852 JK |
3136 | |
3137 | /* Older elfutils strip versions could keep the section in the main | |
3138 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3139 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3140 | return 0; |
3141 | ||
2ec9a5e0 | 3142 | dwarf2_read_section (objfile, section); |
9291a0cd | 3143 | |
2ec9a5e0 | 3144 | addr = section->buffer; |
9291a0cd | 3145 | /* Version check. */ |
1fd400ff | 3146 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3147 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3148 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3149 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3150 | indices. */ |
831adc1f | 3151 | if (version < 4) |
481860b3 GB |
3152 | { |
3153 | static int warning_printed = 0; | |
3154 | if (!warning_printed) | |
3155 | { | |
3156 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3157 | filename); |
481860b3 GB |
3158 | warning_printed = 1; |
3159 | } | |
3160 | return 0; | |
3161 | } | |
3162 | /* Index version 4 uses a different hash function than index version | |
3163 | 5 and later. | |
3164 | ||
3165 | Versions earlier than 6 did not emit psymbols for inlined | |
3166 | functions. Using these files will cause GDB not to be able to | |
3167 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3168 | indices unless the user has done |
3169 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3170 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3171 | { |
3172 | static int warning_printed = 0; | |
3173 | if (!warning_printed) | |
3174 | { | |
e615022a DE |
3175 | warning (_("\ |
3176 | Skipping deprecated .gdb_index section in %s.\n\ | |
3177 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3178 | to use the section anyway."), | |
2ec9a5e0 | 3179 | filename); |
481860b3 GB |
3180 | warning_printed = 1; |
3181 | } | |
3182 | return 0; | |
3183 | } | |
796a7ff8 | 3184 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3185 | of the TU (for symbols coming from TUs), |
3186 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3187 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3188 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3189 | These are just performance bugs, and we can't distinguish gdb-generated | |
3190 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3191 | |
481860b3 | 3192 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3193 | longer backward compatible. */ |
796a7ff8 | 3194 | if (version > 8) |
594e8718 | 3195 | return 0; |
9291a0cd | 3196 | |
559a7a62 | 3197 | map->version = version; |
2ec9a5e0 | 3198 | map->total_size = section->size; |
9291a0cd TT |
3199 | |
3200 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3201 | |
3202 | i = 0; | |
2ec9a5e0 TT |
3203 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3204 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3205 | / 8); | |
1fd400ff TT |
3206 | ++i; |
3207 | ||
2ec9a5e0 TT |
3208 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3209 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3210 | - MAYBE_SWAP (metadata[i])) | |
3211 | / 8); | |
987d643c | 3212 | ++i; |
1fd400ff TT |
3213 | |
3214 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3215 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3216 | - MAYBE_SWAP (metadata[i])); | |
3217 | ++i; | |
3218 | ||
3876f04e DE |
3219 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3220 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3221 | - MAYBE_SWAP (metadata[i])) | |
3222 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3223 | ++i; |
9291a0cd | 3224 | |
f9d83a0b | 3225 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3226 | |
2ec9a5e0 TT |
3227 | return 1; |
3228 | } | |
3229 | ||
3230 | ||
3231 | /* Read the index file. If everything went ok, initialize the "quick" | |
3232 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
3233 | ||
3234 | static int | |
3235 | dwarf2_read_index (struct objfile *objfile) | |
3236 | { | |
3237 | struct mapped_index local_map, *map; | |
3238 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3239 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3240 | struct dwz_file *dwz; |
2ec9a5e0 | 3241 | |
4262abfb | 3242 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3243 | use_deprecated_index_sections, |
3244 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3245 | &cu_list, &cu_list_elements, | |
3246 | &types_list, &types_list_elements)) | |
3247 | return 0; | |
3248 | ||
0fefef59 | 3249 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3250 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3251 | return 0; |
3252 | ||
2ec9a5e0 TT |
3253 | /* If there is a .dwz file, read it so we can get its CU list as |
3254 | well. */ | |
4db1a1dc TT |
3255 | dwz = dwarf2_get_dwz_file (); |
3256 | if (dwz != NULL) | |
2ec9a5e0 | 3257 | { |
2ec9a5e0 TT |
3258 | struct mapped_index dwz_map; |
3259 | const gdb_byte *dwz_types_ignore; | |
3260 | offset_type dwz_types_elements_ignore; | |
3261 | ||
3262 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3263 | 1, | |
3264 | &dwz->gdb_index, &dwz_map, | |
3265 | &dwz_list, &dwz_list_elements, | |
3266 | &dwz_types_ignore, | |
3267 | &dwz_types_elements_ignore)) | |
3268 | { | |
3269 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3270 | bfd_get_filename (dwz->dwz_bfd)); | |
3271 | return 0; | |
3272 | } | |
3273 | } | |
3274 | ||
74a0d9f6 JK |
3275 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3276 | dwz_list_elements); | |
1fd400ff | 3277 | |
8b70b953 TT |
3278 | if (types_list_elements) |
3279 | { | |
3280 | struct dwarf2_section_info *section; | |
3281 | ||
3282 | /* We can only handle a single .debug_types when we have an | |
3283 | index. */ | |
3284 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3285 | return 0; | |
3286 | ||
3287 | section = VEC_index (dwarf2_section_info_def, | |
3288 | dwarf2_per_objfile->types, 0); | |
3289 | ||
74a0d9f6 JK |
3290 | create_signatured_type_table_from_index (objfile, section, types_list, |
3291 | types_list_elements); | |
8b70b953 | 3292 | } |
9291a0cd | 3293 | |
2ec9a5e0 TT |
3294 | create_addrmap_from_index (objfile, &local_map); |
3295 | ||
8d749320 | 3296 | map = XOBNEW (&objfile->objfile_obstack, struct mapped_index); |
2ec9a5e0 | 3297 | *map = local_map; |
9291a0cd TT |
3298 | |
3299 | dwarf2_per_objfile->index_table = map; | |
3300 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3301 | dwarf2_per_objfile->quick_file_names_table = |
3302 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3303 | |
3304 | return 1; | |
3305 | } | |
3306 | ||
3307 | /* A helper for the "quick" functions which sets the global | |
3308 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3309 | |
9291a0cd TT |
3310 | static void |
3311 | dw2_setup (struct objfile *objfile) | |
3312 | { | |
9a3c8263 SM |
3313 | dwarf2_per_objfile = ((struct dwarf2_per_objfile *) |
3314 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
9291a0cd TT |
3315 | gdb_assert (dwarf2_per_objfile); |
3316 | } | |
3317 | ||
dee91e82 | 3318 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3319 | |
dee91e82 DE |
3320 | static void |
3321 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3322 | const gdb_byte *info_ptr, |
dee91e82 DE |
3323 | struct die_info *comp_unit_die, |
3324 | int has_children, | |
3325 | void *data) | |
9291a0cd | 3326 | { |
dee91e82 DE |
3327 | struct dwarf2_cu *cu = reader->cu; |
3328 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3329 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3330 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 3331 | struct line_header *lh; |
9291a0cd | 3332 | struct attribute *attr; |
dee91e82 | 3333 | int i; |
15d034d0 | 3334 | const char *name, *comp_dir; |
7b9f3c50 DE |
3335 | void **slot; |
3336 | struct quick_file_names *qfn; | |
3337 | unsigned int line_offset; | |
9291a0cd | 3338 | |
0186c6a7 DE |
3339 | gdb_assert (! this_cu->is_debug_types); |
3340 | ||
07261596 TT |
3341 | /* Our callers never want to match partial units -- instead they |
3342 | will match the enclosing full CU. */ | |
3343 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3344 | { | |
3345 | this_cu->v.quick->no_file_data = 1; | |
3346 | return; | |
3347 | } | |
3348 | ||
0186c6a7 | 3349 | lh_cu = this_cu; |
7b9f3c50 DE |
3350 | lh = NULL; |
3351 | slot = NULL; | |
3352 | line_offset = 0; | |
dee91e82 DE |
3353 | |
3354 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
3355 | if (attr) |
3356 | { | |
7b9f3c50 DE |
3357 | struct quick_file_names find_entry; |
3358 | ||
3359 | line_offset = DW_UNSND (attr); | |
3360 | ||
3361 | /* We may have already read in this line header (TU line header sharing). | |
3362 | If we have we're done. */ | |
094b34ac DE |
3363 | find_entry.hash.dwo_unit = cu->dwo_unit; |
3364 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3365 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3366 | &find_entry, INSERT); | |
3367 | if (*slot != NULL) | |
3368 | { | |
9a3c8263 | 3369 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3370 | return; |
7b9f3c50 DE |
3371 | } |
3372 | ||
3019eac3 | 3373 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3374 | } |
3375 | if (lh == NULL) | |
3376 | { | |
094b34ac | 3377 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3378 | return; |
9291a0cd TT |
3379 | } |
3380 | ||
8d749320 | 3381 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac DE |
3382 | qfn->hash.dwo_unit = cu->dwo_unit; |
3383 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3384 | gdb_assert (slot != NULL); |
3385 | *slot = qfn; | |
9291a0cd | 3386 | |
dee91e82 | 3387 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 3388 | |
7b9f3c50 | 3389 | qfn->num_file_names = lh->num_file_names; |
8d749320 SM |
3390 | qfn->file_names = |
3391 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->num_file_names); | |
9291a0cd | 3392 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
3393 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
3394 | qfn->real_names = NULL; | |
9291a0cd | 3395 | |
7b9f3c50 | 3396 | free_line_header (lh); |
7b9f3c50 | 3397 | |
094b34ac | 3398 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3399 | } |
3400 | ||
3401 | /* A helper for the "quick" functions which attempts to read the line | |
3402 | table for THIS_CU. */ | |
3403 | ||
3404 | static struct quick_file_names * | |
e4a48d9d | 3405 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3406 | { |
0186c6a7 DE |
3407 | /* This should never be called for TUs. */ |
3408 | gdb_assert (! this_cu->is_debug_types); | |
3409 | /* Nor type unit groups. */ | |
3410 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3411 | |
dee91e82 DE |
3412 | if (this_cu->v.quick->file_names != NULL) |
3413 | return this_cu->v.quick->file_names; | |
3414 | /* If we know there is no line data, no point in looking again. */ | |
3415 | if (this_cu->v.quick->no_file_data) | |
3416 | return NULL; | |
3417 | ||
0186c6a7 | 3418 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3419 | |
3420 | if (this_cu->v.quick->no_file_data) | |
3421 | return NULL; | |
3422 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3423 | } |
3424 | ||
3425 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3426 | real path for a given file name from the line table. */ |
2fdf6df6 | 3427 | |
9291a0cd | 3428 | static const char * |
7b9f3c50 DE |
3429 | dw2_get_real_path (struct objfile *objfile, |
3430 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3431 | { |
7b9f3c50 DE |
3432 | if (qfn->real_names == NULL) |
3433 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3434 | qfn->num_file_names, const char *); |
9291a0cd | 3435 | |
7b9f3c50 DE |
3436 | if (qfn->real_names[index] == NULL) |
3437 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 3438 | |
7b9f3c50 | 3439 | return qfn->real_names[index]; |
9291a0cd TT |
3440 | } |
3441 | ||
3442 | static struct symtab * | |
3443 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3444 | { | |
43f3e411 | 3445 | struct compunit_symtab *cust; |
9291a0cd | 3446 | int index; |
ae2de4f8 | 3447 | |
9291a0cd TT |
3448 | dw2_setup (objfile); |
3449 | index = dwarf2_per_objfile->n_comp_units - 1; | |
43f3e411 DE |
3450 | cust = dw2_instantiate_symtab (dw2_get_cutu (index)); |
3451 | if (cust == NULL) | |
3452 | return NULL; | |
3453 | return compunit_primary_filetab (cust); | |
9291a0cd TT |
3454 | } |
3455 | ||
7b9f3c50 DE |
3456 | /* Traversal function for dw2_forget_cached_source_info. */ |
3457 | ||
3458 | static int | |
3459 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3460 | { |
7b9f3c50 | 3461 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3462 | |
7b9f3c50 | 3463 | if (file_data->real_names) |
9291a0cd | 3464 | { |
7b9f3c50 | 3465 | int i; |
9291a0cd | 3466 | |
7b9f3c50 | 3467 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3468 | { |
7b9f3c50 DE |
3469 | xfree ((void*) file_data->real_names[i]); |
3470 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3471 | } |
3472 | } | |
7b9f3c50 DE |
3473 | |
3474 | return 1; | |
3475 | } | |
3476 | ||
3477 | static void | |
3478 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3479 | { | |
3480 | dw2_setup (objfile); | |
3481 | ||
3482 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3483 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3484 | } |
3485 | ||
f8eba3c6 TT |
3486 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3487 | the symtabs and calls the iterator. */ | |
3488 | ||
3489 | static int | |
3490 | dw2_map_expand_apply (struct objfile *objfile, | |
3491 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3492 | const char *name, const char *real_path, |
f8eba3c6 TT |
3493 | int (*callback) (struct symtab *, void *), |
3494 | void *data) | |
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 | |
f5b95b50 | 3506 | return iterate_over_some_symtabs (name, real_path, callback, data, |
43f3e411 | 3507 | objfile->compunit_symtabs, last_made); |
f8eba3c6 TT |
3508 | } |
3509 | ||
3510 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3511 | ||
9291a0cd | 3512 | static int |
f8eba3c6 | 3513 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3514 | const char *real_path, |
f8eba3c6 TT |
3515 | int (*callback) (struct symtab *, void *), |
3516 | void *data) | |
9291a0cd TT |
3517 | { |
3518 | int i; | |
c011a4f4 | 3519 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3520 | |
3521 | dw2_setup (objfile); | |
ae2de4f8 | 3522 | |
848e3e78 DE |
3523 | /* The rule is CUs specify all the files, including those used by |
3524 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3525 | |
848e3e78 | 3526 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3527 | { |
3528 | int j; | |
8832e7e3 | 3529 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3530 | struct quick_file_names *file_data; |
9291a0cd | 3531 | |
3d7bb9d9 | 3532 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3533 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3534 | continue; |
3535 | ||
e4a48d9d | 3536 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3537 | if (file_data == NULL) |
9291a0cd TT |
3538 | continue; |
3539 | ||
7b9f3c50 | 3540 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3541 | { |
7b9f3c50 | 3542 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3543 | const char *this_real_name; |
9291a0cd | 3544 | |
af529f8f | 3545 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3546 | { |
f5b95b50 | 3547 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3548 | callback, data)) |
3549 | return 1; | |
288e77a7 | 3550 | continue; |
4aac40c8 | 3551 | } |
9291a0cd | 3552 | |
c011a4f4 DE |
3553 | /* Before we invoke realpath, which can get expensive when many |
3554 | files are involved, do a quick comparison of the basenames. */ | |
3555 | if (! basenames_may_differ | |
3556 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3557 | continue; | |
3558 | ||
da235a7c JK |
3559 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3560 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3561 | { |
da235a7c JK |
3562 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3563 | callback, data)) | |
3564 | return 1; | |
288e77a7 | 3565 | continue; |
da235a7c | 3566 | } |
9291a0cd | 3567 | |
da235a7c JK |
3568 | if (real_path != NULL) |
3569 | { | |
af529f8f JK |
3570 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3571 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3572 | if (this_real_name != NULL |
af529f8f | 3573 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3574 | { |
f5b95b50 | 3575 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3576 | callback, data)) |
3577 | return 1; | |
288e77a7 | 3578 | continue; |
9291a0cd TT |
3579 | } |
3580 | } | |
3581 | } | |
3582 | } | |
3583 | ||
9291a0cd TT |
3584 | return 0; |
3585 | } | |
3586 | ||
da51c347 DE |
3587 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3588 | ||
3589 | struct dw2_symtab_iterator | |
9291a0cd | 3590 | { |
da51c347 DE |
3591 | /* The internalized form of .gdb_index. */ |
3592 | struct mapped_index *index; | |
3593 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3594 | int want_specific_block; | |
3595 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3596 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3597 | int block_index; | |
3598 | /* The kind of symbol we're looking for. */ | |
3599 | domain_enum domain; | |
3600 | /* The list of CUs from the index entry of the symbol, | |
3601 | or NULL if not found. */ | |
3602 | offset_type *vec; | |
3603 | /* The next element in VEC to look at. */ | |
3604 | int next; | |
3605 | /* The number of elements in VEC, or zero if there is no match. */ | |
3606 | int length; | |
8943b874 DE |
3607 | /* Have we seen a global version of the symbol? |
3608 | If so we can ignore all further global instances. | |
3609 | This is to work around gold/15646, inefficient gold-generated | |
3610 | indices. */ | |
3611 | int global_seen; | |
da51c347 | 3612 | }; |
9291a0cd | 3613 | |
da51c347 DE |
3614 | /* Initialize the index symtab iterator ITER. |
3615 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3616 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3617 | |
9291a0cd | 3618 | static void |
da51c347 DE |
3619 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3620 | struct mapped_index *index, | |
3621 | int want_specific_block, | |
3622 | int block_index, | |
3623 | domain_enum domain, | |
3624 | const char *name) | |
3625 | { | |
3626 | iter->index = index; | |
3627 | iter->want_specific_block = want_specific_block; | |
3628 | iter->block_index = block_index; | |
3629 | iter->domain = domain; | |
3630 | iter->next = 0; | |
8943b874 | 3631 | iter->global_seen = 0; |
da51c347 DE |
3632 | |
3633 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3634 | iter->length = MAYBE_SWAP (*iter->vec); | |
3635 | else | |
3636 | { | |
3637 | iter->vec = NULL; | |
3638 | iter->length = 0; | |
3639 | } | |
3640 | } | |
3641 | ||
3642 | /* Return the next matching CU or NULL if there are no more. */ | |
3643 | ||
3644 | static struct dwarf2_per_cu_data * | |
3645 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3646 | { | |
3647 | for ( ; iter->next < iter->length; ++iter->next) | |
3648 | { | |
3649 | offset_type cu_index_and_attrs = | |
3650 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3651 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 3652 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
3653 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3654 | /* This value is only valid for index versions >= 7. */ | |
3655 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3656 | gdb_index_symbol_kind symbol_kind = | |
3657 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3658 | /* Only check the symbol attributes if they're present. | |
3659 | Indices prior to version 7 don't record them, | |
3660 | and indices >= 7 may elide them for certain symbols | |
3661 | (gold does this). */ | |
3662 | int attrs_valid = | |
3663 | (iter->index->version >= 7 | |
3664 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3665 | ||
3190f0c6 DE |
3666 | /* Don't crash on bad data. */ |
3667 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3668 | + dwarf2_per_objfile->n_type_units)) | |
3669 | { | |
3670 | complaint (&symfile_complaints, | |
3671 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3672 | " [in module %s]"), |
3673 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3674 | continue; |
3675 | } | |
3676 | ||
8832e7e3 | 3677 | per_cu = dw2_get_cutu (cu_index); |
3190f0c6 | 3678 | |
da51c347 | 3679 | /* Skip if already read in. */ |
43f3e411 | 3680 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3681 | continue; |
3682 | ||
8943b874 DE |
3683 | /* Check static vs global. */ |
3684 | if (attrs_valid) | |
3685 | { | |
3686 | if (iter->want_specific_block | |
3687 | && want_static != is_static) | |
3688 | continue; | |
3689 | /* Work around gold/15646. */ | |
3690 | if (!is_static && iter->global_seen) | |
3691 | continue; | |
3692 | if (!is_static) | |
3693 | iter->global_seen = 1; | |
3694 | } | |
da51c347 DE |
3695 | |
3696 | /* Only check the symbol's kind if it has one. */ | |
3697 | if (attrs_valid) | |
3698 | { | |
3699 | switch (iter->domain) | |
3700 | { | |
3701 | case VAR_DOMAIN: | |
3702 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3703 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3704 | /* Some types are also in VAR_DOMAIN. */ | |
3705 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3706 | continue; | |
3707 | break; | |
3708 | case STRUCT_DOMAIN: | |
3709 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3710 | continue; | |
3711 | break; | |
3712 | case LABEL_DOMAIN: | |
3713 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3714 | continue; | |
3715 | break; | |
3716 | default: | |
3717 | break; | |
3718 | } | |
3719 | } | |
3720 | ||
3721 | ++iter->next; | |
3722 | return per_cu; | |
3723 | } | |
3724 | ||
3725 | return NULL; | |
3726 | } | |
3727 | ||
43f3e411 | 3728 | static struct compunit_symtab * |
da51c347 DE |
3729 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
3730 | const char *name, domain_enum domain) | |
9291a0cd | 3731 | { |
43f3e411 | 3732 | struct compunit_symtab *stab_best = NULL; |
156942c7 DE |
3733 | struct mapped_index *index; |
3734 | ||
9291a0cd TT |
3735 | dw2_setup (objfile); |
3736 | ||
156942c7 DE |
3737 | index = dwarf2_per_objfile->index_table; |
3738 | ||
da51c347 | 3739 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3740 | if (index) |
9291a0cd | 3741 | { |
da51c347 DE |
3742 | struct dw2_symtab_iterator iter; |
3743 | struct dwarf2_per_cu_data *per_cu; | |
3744 | ||
3745 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3746 | |
da51c347 | 3747 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3748 | { |
b2e2f908 | 3749 | struct symbol *sym, *with_opaque = NULL; |
43f3e411 DE |
3750 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); |
3751 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
f194fefb | 3752 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3753 | |
b2e2f908 DE |
3754 | sym = block_find_symbol (block, name, domain, |
3755 | block_find_non_opaque_type_preferred, | |
3756 | &with_opaque); | |
3757 | ||
da51c347 DE |
3758 | /* Some caution must be observed with overloaded functions |
3759 | and methods, since the index will not contain any overload | |
3760 | information (but NAME might contain it). */ | |
da51c347 | 3761 | |
b2e2f908 DE |
3762 | if (sym != NULL |
3763 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
3764 | return stab; | |
3765 | if (with_opaque != NULL | |
3766 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
3767 | stab_best = stab; | |
da51c347 DE |
3768 | |
3769 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3770 | } |
3771 | } | |
9291a0cd | 3772 | |
da51c347 | 3773 | return stab_best; |
9291a0cd TT |
3774 | } |
3775 | ||
3776 | static void | |
3777 | dw2_print_stats (struct objfile *objfile) | |
3778 | { | |
e4a48d9d | 3779 | int i, total, count; |
9291a0cd TT |
3780 | |
3781 | dw2_setup (objfile); | |
e4a48d9d | 3782 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3783 | count = 0; |
e4a48d9d | 3784 | for (i = 0; i < total; ++i) |
9291a0cd | 3785 | { |
8832e7e3 | 3786 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3787 | |
43f3e411 | 3788 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3789 | ++count; |
3790 | } | |
e4a48d9d | 3791 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3792 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3793 | } | |
3794 | ||
779bd270 DE |
3795 | /* This dumps minimal information about the index. |
3796 | It is called via "mt print objfiles". | |
3797 | One use is to verify .gdb_index has been loaded by the | |
3798 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3799 | ||
9291a0cd TT |
3800 | static void |
3801 | dw2_dump (struct objfile *objfile) | |
3802 | { | |
779bd270 DE |
3803 | dw2_setup (objfile); |
3804 | gdb_assert (dwarf2_per_objfile->using_index); | |
3805 | printf_filtered (".gdb_index:"); | |
3806 | if (dwarf2_per_objfile->index_table != NULL) | |
3807 | { | |
3808 | printf_filtered (" version %d\n", | |
3809 | dwarf2_per_objfile->index_table->version); | |
3810 | } | |
3811 | else | |
3812 | printf_filtered (" faked for \"readnow\"\n"); | |
3813 | printf_filtered ("\n"); | |
9291a0cd TT |
3814 | } |
3815 | ||
3816 | static void | |
3189cb12 DE |
3817 | dw2_relocate (struct objfile *objfile, |
3818 | const struct section_offsets *new_offsets, | |
3819 | const struct section_offsets *delta) | |
9291a0cd TT |
3820 | { |
3821 | /* There's nothing to relocate here. */ | |
3822 | } | |
3823 | ||
3824 | static void | |
3825 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3826 | const char *func_name) | |
3827 | { | |
da51c347 DE |
3828 | struct mapped_index *index; |
3829 | ||
3830 | dw2_setup (objfile); | |
3831 | ||
3832 | index = dwarf2_per_objfile->index_table; | |
3833 | ||
3834 | /* index is NULL if OBJF_READNOW. */ | |
3835 | if (index) | |
3836 | { | |
3837 | struct dw2_symtab_iterator iter; | |
3838 | struct dwarf2_per_cu_data *per_cu; | |
3839 | ||
3840 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3841 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3842 | func_name); | |
3843 | ||
3844 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3845 | dw2_instantiate_symtab (per_cu); | |
3846 | } | |
9291a0cd TT |
3847 | } |
3848 | ||
3849 | static void | |
3850 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3851 | { | |
3852 | int i; | |
3853 | ||
3854 | dw2_setup (objfile); | |
1fd400ff TT |
3855 | |
3856 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3857 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3858 | { |
8832e7e3 | 3859 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3860 | |
a0f42c21 | 3861 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3862 | } |
3863 | } | |
3864 | ||
3865 | static void | |
652a8996 JK |
3866 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3867 | const char *fullname) | |
9291a0cd TT |
3868 | { |
3869 | int i; | |
3870 | ||
3871 | dw2_setup (objfile); | |
d4637a04 DE |
3872 | |
3873 | /* We don't need to consider type units here. | |
3874 | This is only called for examining code, e.g. expand_line_sal. | |
3875 | There can be an order of magnitude (or more) more type units | |
3876 | than comp units, and we avoid them if we can. */ | |
3877 | ||
3878 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3879 | { |
3880 | int j; | |
8832e7e3 | 3881 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
7b9f3c50 | 3882 | struct quick_file_names *file_data; |
9291a0cd | 3883 | |
3d7bb9d9 | 3884 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3885 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3886 | continue; |
3887 | ||
e4a48d9d | 3888 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3889 | if (file_data == NULL) |
9291a0cd TT |
3890 | continue; |
3891 | ||
7b9f3c50 | 3892 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3893 | { |
652a8996 JK |
3894 | const char *this_fullname = file_data->file_names[j]; |
3895 | ||
3896 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3897 | { |
a0f42c21 | 3898 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3899 | break; |
3900 | } | |
3901 | } | |
3902 | } | |
3903 | } | |
3904 | ||
9291a0cd | 3905 | static void |
ade7ed9e | 3906 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 3907 | const char * name, domain_enum domain, |
ade7ed9e | 3908 | int global, |
40658b94 PH |
3909 | int (*callback) (struct block *, |
3910 | struct symbol *, void *), | |
2edb89d3 JK |
3911 | void *data, symbol_compare_ftype *match, |
3912 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3913 | { |
40658b94 | 3914 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3915 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3916 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3917 | } |
3918 | ||
3919 | static void | |
f8eba3c6 TT |
3920 | dw2_expand_symtabs_matching |
3921 | (struct objfile *objfile, | |
206f2a57 DE |
3922 | expand_symtabs_file_matcher_ftype *file_matcher, |
3923 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, | |
276d885b | 3924 | expand_symtabs_exp_notify_ftype *expansion_notify, |
f8eba3c6 TT |
3925 | enum search_domain kind, |
3926 | void *data) | |
9291a0cd TT |
3927 | { |
3928 | int i; | |
3929 | offset_type iter; | |
4b5246aa | 3930 | struct mapped_index *index; |
9291a0cd TT |
3931 | |
3932 | dw2_setup (objfile); | |
ae2de4f8 DE |
3933 | |
3934 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3935 | if (!dwarf2_per_objfile->index_table) |
3936 | return; | |
4b5246aa | 3937 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3938 | |
7b08b9eb | 3939 | if (file_matcher != NULL) |
24c79950 | 3940 | { |
fc4007c9 TT |
3941 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
3942 | htab_eq_pointer, | |
3943 | NULL, xcalloc, xfree)); | |
3944 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
3945 | htab_eq_pointer, | |
3946 | NULL, xcalloc, xfree)); | |
24c79950 | 3947 | |
848e3e78 DE |
3948 | /* The rule is CUs specify all the files, including those used by |
3949 | any TU, so there's no need to scan TUs here. */ | |
3950 | ||
3951 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3952 | { |
3953 | int j; | |
8832e7e3 | 3954 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
24c79950 TT |
3955 | struct quick_file_names *file_data; |
3956 | void **slot; | |
7b08b9eb | 3957 | |
61d96d7e DE |
3958 | QUIT; |
3959 | ||
24c79950 | 3960 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3961 | |
24c79950 | 3962 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3963 | if (per_cu->v.quick->compunit_symtab) |
24c79950 | 3964 | continue; |
7b08b9eb | 3965 | |
e4a48d9d | 3966 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3967 | if (file_data == NULL) |
3968 | continue; | |
7b08b9eb | 3969 | |
fc4007c9 | 3970 | if (htab_find (visited_not_found.get (), file_data) != NULL) |
24c79950 | 3971 | continue; |
fc4007c9 | 3972 | else if (htab_find (visited_found.get (), file_data) != NULL) |
24c79950 TT |
3973 | { |
3974 | per_cu->v.quick->mark = 1; | |
3975 | continue; | |
3976 | } | |
3977 | ||
3978 | for (j = 0; j < file_data->num_file_names; ++j) | |
3979 | { | |
da235a7c JK |
3980 | const char *this_real_name; |
3981 | ||
fbd9ab74 | 3982 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3983 | { |
3984 | per_cu->v.quick->mark = 1; | |
3985 | break; | |
3986 | } | |
da235a7c JK |
3987 | |
3988 | /* Before we invoke realpath, which can get expensive when many | |
3989 | files are involved, do a quick comparison of the basenames. */ | |
3990 | if (!basenames_may_differ | |
3991 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3992 | data, 1)) | |
3993 | continue; | |
3994 | ||
3995 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3996 | if (file_matcher (this_real_name, data, 0)) | |
3997 | { | |
3998 | per_cu->v.quick->mark = 1; | |
3999 | break; | |
4000 | } | |
24c79950 TT |
4001 | } |
4002 | ||
4003 | slot = htab_find_slot (per_cu->v.quick->mark | |
fc4007c9 TT |
4004 | ? visited_found.get () |
4005 | : visited_not_found.get (), | |
24c79950 TT |
4006 | file_data, INSERT); |
4007 | *slot = file_data; | |
4008 | } | |
24c79950 | 4009 | } |
9291a0cd | 4010 | |
3876f04e | 4011 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
4012 | { |
4013 | offset_type idx = 2 * iter; | |
4014 | const char *name; | |
4015 | offset_type *vec, vec_len, vec_idx; | |
8943b874 | 4016 | int global_seen = 0; |
9291a0cd | 4017 | |
61d96d7e DE |
4018 | QUIT; |
4019 | ||
3876f04e | 4020 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
4021 | continue; |
4022 | ||
3876f04e | 4023 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 4024 | |
206f2a57 | 4025 | if (! (*symbol_matcher) (name, data)) |
9291a0cd TT |
4026 | continue; |
4027 | ||
4028 | /* The name was matched, now expand corresponding CUs that were | |
4029 | marked. */ | |
4b5246aa | 4030 | vec = (offset_type *) (index->constant_pool |
3876f04e | 4031 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
4032 | vec_len = MAYBE_SWAP (vec[0]); |
4033 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4034 | { | |
e254ef6a | 4035 | struct dwarf2_per_cu_data *per_cu; |
156942c7 | 4036 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
8943b874 DE |
4037 | /* This value is only valid for index versions >= 7. */ |
4038 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
156942c7 DE |
4039 | gdb_index_symbol_kind symbol_kind = |
4040 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4041 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 DE |
4042 | /* Only check the symbol attributes if they're present. |
4043 | Indices prior to version 7 don't record them, | |
4044 | and indices >= 7 may elide them for certain symbols | |
4045 | (gold does this). */ | |
4046 | int attrs_valid = | |
4047 | (index->version >= 7 | |
4048 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4049 | ||
8943b874 DE |
4050 | /* Work around gold/15646. */ |
4051 | if (attrs_valid) | |
4052 | { | |
4053 | if (!is_static && global_seen) | |
4054 | continue; | |
4055 | if (!is_static) | |
4056 | global_seen = 1; | |
4057 | } | |
4058 | ||
3190f0c6 DE |
4059 | /* Only check the symbol's kind if it has one. */ |
4060 | if (attrs_valid) | |
156942c7 DE |
4061 | { |
4062 | switch (kind) | |
4063 | { | |
4064 | case VARIABLES_DOMAIN: | |
4065 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4066 | continue; | |
4067 | break; | |
4068 | case FUNCTIONS_DOMAIN: | |
4069 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
4070 | continue; | |
4071 | break; | |
4072 | case TYPES_DOMAIN: | |
4073 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4074 | continue; | |
4075 | break; | |
4076 | default: | |
4077 | break; | |
4078 | } | |
4079 | } | |
4080 | ||
3190f0c6 DE |
4081 | /* Don't crash on bad data. */ |
4082 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
4083 | + dwarf2_per_objfile->n_type_units)) | |
4084 | { | |
4085 | complaint (&symfile_complaints, | |
4086 | _(".gdb_index entry has bad CU index" | |
4262abfb | 4087 | " [in module %s]"), objfile_name (objfile)); |
3190f0c6 DE |
4088 | continue; |
4089 | } | |
4090 | ||
8832e7e3 | 4091 | per_cu = dw2_get_cutu (cu_index); |
7b08b9eb | 4092 | if (file_matcher == NULL || per_cu->v.quick->mark) |
276d885b GB |
4093 | { |
4094 | int symtab_was_null = | |
4095 | (per_cu->v.quick->compunit_symtab == NULL); | |
4096 | ||
4097 | dw2_instantiate_symtab (per_cu); | |
4098 | ||
4099 | if (expansion_notify != NULL | |
4100 | && symtab_was_null | |
4101 | && per_cu->v.quick->compunit_symtab != NULL) | |
4102 | { | |
4103 | expansion_notify (per_cu->v.quick->compunit_symtab, | |
4104 | data); | |
4105 | } | |
4106 | } | |
9291a0cd TT |
4107 | } |
4108 | } | |
4109 | } | |
4110 | ||
43f3e411 | 4111 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific |
9703b513 TT |
4112 | symtab. */ |
4113 | ||
43f3e411 DE |
4114 | static struct compunit_symtab * |
4115 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4116 | CORE_ADDR pc) | |
9703b513 TT |
4117 | { |
4118 | int i; | |
4119 | ||
43f3e411 DE |
4120 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL |
4121 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4122 | return cust; | |
9703b513 | 4123 | |
43f3e411 | 4124 | if (cust->includes == NULL) |
a3ec0bb1 DE |
4125 | return NULL; |
4126 | ||
43f3e411 | 4127 | for (i = 0; cust->includes[i]; ++i) |
9703b513 | 4128 | { |
43f3e411 | 4129 | struct compunit_symtab *s = cust->includes[i]; |
9703b513 | 4130 | |
43f3e411 | 4131 | s = recursively_find_pc_sect_compunit_symtab (s, pc); |
9703b513 TT |
4132 | if (s != NULL) |
4133 | return s; | |
4134 | } | |
4135 | ||
4136 | return NULL; | |
4137 | } | |
4138 | ||
43f3e411 DE |
4139 | static struct compunit_symtab * |
4140 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4141 | struct bound_minimal_symbol msymbol, | |
4142 | CORE_ADDR pc, | |
4143 | struct obj_section *section, | |
4144 | int warn_if_readin) | |
9291a0cd TT |
4145 | { |
4146 | struct dwarf2_per_cu_data *data; | |
43f3e411 | 4147 | struct compunit_symtab *result; |
9291a0cd TT |
4148 | |
4149 | dw2_setup (objfile); | |
4150 | ||
4151 | if (!objfile->psymtabs_addrmap) | |
4152 | return NULL; | |
4153 | ||
9a3c8263 SM |
4154 | data = (struct dwarf2_per_cu_data *) addrmap_find (objfile->psymtabs_addrmap, |
4155 | pc); | |
9291a0cd TT |
4156 | if (!data) |
4157 | return NULL; | |
4158 | ||
43f3e411 | 4159 | if (warn_if_readin && data->v.quick->compunit_symtab) |
abebb8b0 | 4160 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
4161 | paddress (get_objfile_arch (objfile), pc)); |
4162 | ||
43f3e411 DE |
4163 | result |
4164 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
4165 | pc); | |
9703b513 TT |
4166 | gdb_assert (result != NULL); |
4167 | return result; | |
9291a0cd TT |
4168 | } |
4169 | ||
9291a0cd | 4170 | static void |
44b13c5a | 4171 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 4172 | void *data, int need_fullname) |
9291a0cd TT |
4173 | { |
4174 | int i; | |
fc4007c9 TT |
4175 | htab_up visited (htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, |
4176 | NULL, xcalloc, xfree)); | |
9291a0cd TT |
4177 | |
4178 | dw2_setup (objfile); | |
ae2de4f8 | 4179 | |
848e3e78 DE |
4180 | /* The rule is CUs specify all the files, including those used by |
4181 | any TU, so there's no need to scan TUs here. | |
4182 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 4183 | |
848e3e78 | 4184 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 | 4185 | { |
8832e7e3 | 4186 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
24c79950 | 4187 | |
43f3e411 | 4188 | if (per_cu->v.quick->compunit_symtab) |
24c79950 | 4189 | { |
fc4007c9 TT |
4190 | void **slot = htab_find_slot (visited.get (), |
4191 | per_cu->v.quick->file_names, | |
24c79950 TT |
4192 | INSERT); |
4193 | ||
4194 | *slot = per_cu->v.quick->file_names; | |
4195 | } | |
4196 | } | |
4197 | ||
848e3e78 | 4198 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4199 | { |
4200 | int j; | |
8832e7e3 | 4201 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 4202 | struct quick_file_names *file_data; |
24c79950 | 4203 | void **slot; |
9291a0cd | 4204 | |
3d7bb9d9 | 4205 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4206 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4207 | continue; |
4208 | ||
e4a48d9d | 4209 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4210 | if (file_data == NULL) |
9291a0cd TT |
4211 | continue; |
4212 | ||
fc4007c9 | 4213 | slot = htab_find_slot (visited.get (), file_data, INSERT); |
24c79950 TT |
4214 | if (*slot) |
4215 | { | |
4216 | /* Already visited. */ | |
4217 | continue; | |
4218 | } | |
4219 | *slot = file_data; | |
4220 | ||
7b9f3c50 | 4221 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4222 | { |
74e2f255 DE |
4223 | const char *this_real_name; |
4224 | ||
4225 | if (need_fullname) | |
4226 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4227 | else | |
4228 | this_real_name = NULL; | |
7b9f3c50 | 4229 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
4230 | } |
4231 | } | |
4232 | } | |
4233 | ||
4234 | static int | |
4235 | dw2_has_symbols (struct objfile *objfile) | |
4236 | { | |
4237 | return 1; | |
4238 | } | |
4239 | ||
4240 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4241 | { | |
4242 | dw2_has_symbols, | |
4243 | dw2_find_last_source_symtab, | |
4244 | dw2_forget_cached_source_info, | |
f8eba3c6 | 4245 | dw2_map_symtabs_matching_filename, |
9291a0cd | 4246 | dw2_lookup_symbol, |
9291a0cd TT |
4247 | dw2_print_stats, |
4248 | dw2_dump, | |
4249 | dw2_relocate, | |
4250 | dw2_expand_symtabs_for_function, | |
4251 | dw2_expand_all_symtabs, | |
652a8996 | 4252 | dw2_expand_symtabs_with_fullname, |
40658b94 | 4253 | dw2_map_matching_symbols, |
9291a0cd | 4254 | dw2_expand_symtabs_matching, |
43f3e411 | 4255 | dw2_find_pc_sect_compunit_symtab, |
9291a0cd TT |
4256 | dw2_map_symbol_filenames |
4257 | }; | |
4258 | ||
4259 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
4260 | file will use psymtabs, or 1 if using the GNU index. */ | |
4261 | ||
4262 | int | |
4263 | dwarf2_initialize_objfile (struct objfile *objfile) | |
4264 | { | |
4265 | /* If we're about to read full symbols, don't bother with the | |
4266 | indices. In this case we also don't care if some other debug | |
4267 | format is making psymtabs, because they are all about to be | |
4268 | expanded anyway. */ | |
4269 | if ((objfile->flags & OBJF_READNOW)) | |
4270 | { | |
4271 | int i; | |
4272 | ||
4273 | dwarf2_per_objfile->using_index = 1; | |
4274 | create_all_comp_units (objfile); | |
0e50663e | 4275 | create_all_type_units (objfile); |
7b9f3c50 DE |
4276 | dwarf2_per_objfile->quick_file_names_table = |
4277 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 4278 | |
1fd400ff | 4279 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 4280 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4281 | { |
8832e7e3 | 4282 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 4283 | |
e254ef6a DE |
4284 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
4285 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
4286 | } |
4287 | ||
4288 | /* Return 1 so that gdb sees the "quick" functions. However, | |
4289 | these functions will be no-ops because we will have expanded | |
4290 | all symtabs. */ | |
4291 | return 1; | |
4292 | } | |
4293 | ||
4294 | if (dwarf2_read_index (objfile)) | |
4295 | return 1; | |
4296 | ||
9291a0cd TT |
4297 | return 0; |
4298 | } | |
4299 | ||
4300 | \f | |
4301 | ||
dce234bc PP |
4302 | /* Build a partial symbol table. */ |
4303 | ||
4304 | void | |
f29dff0a | 4305 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 4306 | { |
c9bf0622 | 4307 | |
f29dff0a | 4308 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
4309 | { |
4310 | init_psymbol_list (objfile, 1024); | |
4311 | } | |
4312 | ||
492d29ea | 4313 | TRY |
c9bf0622 TT |
4314 | { |
4315 | /* This isn't really ideal: all the data we allocate on the | |
4316 | objfile's obstack is still uselessly kept around. However, | |
4317 | freeing it seems unsafe. */ | |
906768f9 | 4318 | psymtab_discarder psymtabs (objfile); |
c9bf0622 | 4319 | dwarf2_build_psymtabs_hard (objfile); |
906768f9 | 4320 | psymtabs.keep (); |
c9bf0622 | 4321 | } |
492d29ea PA |
4322 | CATCH (except, RETURN_MASK_ERROR) |
4323 | { | |
4324 | exception_print (gdb_stderr, except); | |
4325 | } | |
4326 | END_CATCH | |
c906108c | 4327 | } |
c906108c | 4328 | |
1ce1cefd DE |
4329 | /* Return the total length of the CU described by HEADER. */ |
4330 | ||
4331 | static unsigned int | |
4332 | get_cu_length (const struct comp_unit_head *header) | |
4333 | { | |
4334 | return header->initial_length_size + header->length; | |
4335 | } | |
4336 | ||
45452591 DE |
4337 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
4338 | ||
4339 | static inline int | |
b64f50a1 | 4340 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 4341 | { |
b64f50a1 | 4342 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 4343 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 4344 | |
b64f50a1 | 4345 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
4346 | } |
4347 | ||
3b80fe9b DE |
4348 | /* Find the base address of the compilation unit for range lists and |
4349 | location lists. It will normally be specified by DW_AT_low_pc. | |
4350 | In DWARF-3 draft 4, the base address could be overridden by | |
4351 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
4352 | compilation units with discontinuous ranges. */ | |
4353 | ||
4354 | static void | |
4355 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
4356 | { | |
4357 | struct attribute *attr; | |
4358 | ||
4359 | cu->base_known = 0; | |
4360 | cu->base_address = 0; | |
4361 | ||
4362 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
4363 | if (attr) | |
4364 | { | |
31aa7e4e | 4365 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4366 | cu->base_known = 1; |
4367 | } | |
4368 | else | |
4369 | { | |
4370 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4371 | if (attr) | |
4372 | { | |
31aa7e4e | 4373 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4374 | cu->base_known = 1; |
4375 | } | |
4376 | } | |
4377 | } | |
4378 | ||
93311388 | 4379 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 4380 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
4381 | NOTE: This leaves members offset, first_die_offset to be filled in |
4382 | by the caller. */ | |
107d2387 | 4383 | |
d521ce57 | 4384 | static const gdb_byte * |
107d2387 | 4385 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
4386 | const gdb_byte *info_ptr, |
4387 | struct dwarf2_section_info *section, | |
4388 | rcuh_kind section_kind) | |
107d2387 AC |
4389 | { |
4390 | int signed_addr; | |
891d2f0b | 4391 | unsigned int bytes_read; |
43988095 JK |
4392 | const char *filename = get_section_file_name (section); |
4393 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
4394 | |
4395 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
4396 | cu_header->initial_length_size = bytes_read; | |
4397 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 4398 | info_ptr += bytes_read; |
107d2387 AC |
4399 | cu_header->version = read_2_bytes (abfd, info_ptr); |
4400 | info_ptr += 2; | |
43988095 JK |
4401 | if (cu_header->version < 5) |
4402 | switch (section_kind) | |
4403 | { | |
4404 | case rcuh_kind::COMPILE: | |
4405 | cu_header->unit_type = DW_UT_compile; | |
4406 | break; | |
4407 | case rcuh_kind::TYPE: | |
4408 | cu_header->unit_type = DW_UT_type; | |
4409 | break; | |
4410 | default: | |
4411 | internal_error (__FILE__, __LINE__, | |
4412 | _("read_comp_unit_head: invalid section_kind")); | |
4413 | } | |
4414 | else | |
4415 | { | |
4416 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
4417 | (read_1_byte (abfd, info_ptr)); | |
4418 | info_ptr += 1; | |
4419 | switch (cu_header->unit_type) | |
4420 | { | |
4421 | case DW_UT_compile: | |
4422 | if (section_kind != rcuh_kind::COMPILE) | |
4423 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
4424 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
4425 | filename); | |
4426 | break; | |
4427 | case DW_UT_type: | |
4428 | section_kind = rcuh_kind::TYPE; | |
4429 | break; | |
4430 | default: | |
4431 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
4432 | "(is %d, should be %d or %d) [in module %s]"), | |
4433 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
4434 | } | |
4435 | ||
4436 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
4437 | info_ptr += 1; | |
4438 | } | |
b64f50a1 JK |
4439 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
4440 | &bytes_read); | |
613e1657 | 4441 | info_ptr += bytes_read; |
43988095 JK |
4442 | if (cu_header->version < 5) |
4443 | { | |
4444 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
4445 | info_ptr += 1; | |
4446 | } | |
107d2387 AC |
4447 | signed_addr = bfd_get_sign_extend_vma (abfd); |
4448 | if (signed_addr < 0) | |
8e65ff28 | 4449 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4450 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 4451 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 4452 | |
43988095 JK |
4453 | if (section_kind == rcuh_kind::TYPE) |
4454 | { | |
4455 | LONGEST type_offset; | |
4456 | ||
4457 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
4458 | info_ptr += 8; | |
4459 | ||
4460 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
4461 | info_ptr += bytes_read; | |
4462 | cu_header->type_offset_in_tu.cu_off = type_offset; | |
4463 | if (cu_header->type_offset_in_tu.cu_off != type_offset) | |
4464 | error (_("Dwarf Error: Too big type_offset in compilation unit " | |
4465 | "header (is %s) [in module %s]"), plongest (type_offset), | |
4466 | filename); | |
4467 | } | |
4468 | ||
107d2387 AC |
4469 | return info_ptr; |
4470 | } | |
4471 | ||
36586728 TT |
4472 | /* Helper function that returns the proper abbrev section for |
4473 | THIS_CU. */ | |
4474 | ||
4475 | static struct dwarf2_section_info * | |
4476 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
4477 | { | |
4478 | struct dwarf2_section_info *abbrev; | |
4479 | ||
4480 | if (this_cu->is_dwz) | |
4481 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
4482 | else | |
4483 | abbrev = &dwarf2_per_objfile->abbrev; | |
4484 | ||
4485 | return abbrev; | |
4486 | } | |
4487 | ||
9ff913ba DE |
4488 | /* Subroutine of read_and_check_comp_unit_head and |
4489 | read_and_check_type_unit_head to simplify them. | |
4490 | Perform various error checking on the header. */ | |
4491 | ||
4492 | static void | |
4493 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
4494 | struct dwarf2_section_info *section, |
4495 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 4496 | { |
a32a8923 | 4497 | const char *filename = get_section_file_name (section); |
9ff913ba | 4498 | |
43988095 | 4499 | if (header->version < 2 || header->version > 5) |
9ff913ba | 4500 | error (_("Dwarf Error: wrong version in compilation unit header " |
43988095 | 4501 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), header->version, |
9ff913ba DE |
4502 | filename); |
4503 | ||
b64f50a1 | 4504 | if (header->abbrev_offset.sect_off |
36586728 | 4505 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
4506 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
4507 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 4508 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
4509 | filename); |
4510 | ||
4511 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
4512 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4513 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4514 | > section->size) |
4515 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4516 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4517 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4518 | filename); |
4519 | } | |
4520 | ||
4521 | /* Read in a CU/TU header and perform some basic error checking. | |
4522 | The contents of the header are stored in HEADER. | |
4523 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4524 | |
d521ce57 | 4525 | static const gdb_byte * |
9ff913ba DE |
4526 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4527 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4528 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4529 | const gdb_byte *info_ptr, |
43988095 | 4530 | rcuh_kind section_kind) |
72bf9492 | 4531 | { |
d521ce57 | 4532 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4533 | bfd *abfd = get_section_bfd_owner (section); |
72bf9492 | 4534 | |
b64f50a1 | 4535 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4536 | |
43988095 | 4537 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 4538 | |
b64f50a1 | 4539 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4540 | |
4bdcc0c1 | 4541 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4542 | |
4543 | return info_ptr; | |
348e048f DE |
4544 | } |
4545 | ||
f4dc4d17 DE |
4546 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4547 | ||
4548 | static sect_offset | |
4549 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4550 | sect_offset offset) | |
4551 | { | |
a32a8923 | 4552 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 4553 | const gdb_byte *info_ptr; |
ac298888 | 4554 | unsigned int initial_length_size, offset_size; |
f4dc4d17 | 4555 | sect_offset abbrev_offset; |
43988095 | 4556 | uint16_t version; |
f4dc4d17 DE |
4557 | |
4558 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4559 | info_ptr = section->buffer + offset.sect_off; | |
ac298888 | 4560 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 4561 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
4562 | info_ptr += initial_length_size; |
4563 | ||
4564 | version = read_2_bytes (abfd, info_ptr); | |
4565 | info_ptr += 2; | |
4566 | if (version >= 5) | |
4567 | { | |
4568 | /* Skip unit type and address size. */ | |
4569 | info_ptr += 2; | |
4570 | } | |
4571 | ||
f4dc4d17 DE |
4572 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); |
4573 | return abbrev_offset; | |
4574 | } | |
4575 | ||
aaa75496 JB |
4576 | /* Allocate a new partial symtab for file named NAME and mark this new |
4577 | partial symtab as being an include of PST. */ | |
4578 | ||
4579 | static void | |
d521ce57 | 4580 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
4581 | struct objfile *objfile) |
4582 | { | |
4583 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4584 | ||
fbd9ab74 JK |
4585 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4586 | { | |
4587 | /* It shares objfile->objfile_obstack. */ | |
4588 | subpst->dirname = pst->dirname; | |
4589 | } | |
4590 | ||
aaa75496 JB |
4591 | subpst->textlow = 0; |
4592 | subpst->texthigh = 0; | |
4593 | ||
8d749320 SM |
4594 | subpst->dependencies |
4595 | = XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
aaa75496 JB |
4596 | subpst->dependencies[0] = pst; |
4597 | subpst->number_of_dependencies = 1; | |
4598 | ||
4599 | subpst->globals_offset = 0; | |
4600 | subpst->n_global_syms = 0; | |
4601 | subpst->statics_offset = 0; | |
4602 | subpst->n_static_syms = 0; | |
43f3e411 | 4603 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
4604 | subpst->read_symtab = pst->read_symtab; |
4605 | subpst->readin = 0; | |
4606 | ||
4607 | /* No private part is necessary for include psymtabs. This property | |
4608 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4609 | the regular ones. */ |
58a9656e | 4610 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4611 | } |
4612 | ||
4613 | /* Read the Line Number Program data and extract the list of files | |
4614 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4615 | partial symtab for each of these included files. */ |
aaa75496 JB |
4616 | |
4617 | static void | |
4618 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4619 | struct die_info *die, |
4620 | struct partial_symtab *pst) | |
aaa75496 | 4621 | { |
d85a05f0 DJ |
4622 | struct line_header *lh = NULL; |
4623 | struct attribute *attr; | |
aaa75496 | 4624 | |
d85a05f0 DJ |
4625 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4626 | if (attr) | |
3019eac3 | 4627 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4628 | if (lh == NULL) |
4629 | return; /* No linetable, so no includes. */ | |
4630 | ||
c6da4cef | 4631 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
527f3840 | 4632 | dwarf_decode_lines (lh, pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
4633 | |
4634 | free_line_header (lh); | |
4635 | } | |
4636 | ||
348e048f | 4637 | static hashval_t |
52dc124a | 4638 | hash_signatured_type (const void *item) |
348e048f | 4639 | { |
9a3c8263 SM |
4640 | const struct signatured_type *sig_type |
4641 | = (const struct signatured_type *) item; | |
9a619af0 | 4642 | |
348e048f | 4643 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4644 | return sig_type->signature; |
348e048f DE |
4645 | } |
4646 | ||
4647 | static int | |
52dc124a | 4648 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 4649 | { |
9a3c8263 SM |
4650 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
4651 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 4652 | |
348e048f DE |
4653 | return lhs->signature == rhs->signature; |
4654 | } | |
4655 | ||
1fd400ff TT |
4656 | /* Allocate a hash table for signatured types. */ |
4657 | ||
4658 | static htab_t | |
673bfd45 | 4659 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4660 | { |
4661 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4662 | hash_signatured_type, |
4663 | eq_signatured_type, | |
1fd400ff TT |
4664 | NULL, |
4665 | &objfile->objfile_obstack, | |
4666 | hashtab_obstack_allocate, | |
4667 | dummy_obstack_deallocate); | |
4668 | } | |
4669 | ||
d467dd73 | 4670 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4671 | |
4672 | static int | |
d467dd73 | 4673 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 4674 | { |
9a3c8263 SM |
4675 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
4676 | struct signatured_type ***datap = (struct signatured_type ***) datum; | |
1fd400ff | 4677 | |
b4dd5633 | 4678 | **datap = sigt; |
1fd400ff TT |
4679 | ++*datap; |
4680 | ||
4681 | return 1; | |
4682 | } | |
4683 | ||
78d4d2c5 | 4684 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
4685 | and fill them into TYPES_HTAB. It will process only type units, |
4686 | therefore DW_UT_type. */ | |
c88ee1f0 | 4687 | |
78d4d2c5 JK |
4688 | static void |
4689 | create_debug_type_hash_table (struct dwo_file *dwo_file, | |
43988095 JK |
4690 | dwarf2_section_info *section, htab_t &types_htab, |
4691 | rcuh_kind section_kind) | |
348e048f | 4692 | { |
3019eac3 | 4693 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 4694 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
4695 | bfd *abfd; |
4696 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 4697 | |
4bdcc0c1 DE |
4698 | abbrev_section = (dwo_file != NULL |
4699 | ? &dwo_file->sections.abbrev | |
4700 | : &dwarf2_per_objfile->abbrev); | |
4701 | ||
b4f54984 | 4702 | if (dwarf_read_debug) |
43988095 JK |
4703 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
4704 | get_section_name (section), | |
a32a8923 | 4705 | get_section_file_name (abbrev_section)); |
09406207 | 4706 | |
78d4d2c5 JK |
4707 | dwarf2_read_section (objfile, section); |
4708 | info_ptr = section->buffer; | |
348e048f | 4709 | |
78d4d2c5 JK |
4710 | if (info_ptr == NULL) |
4711 | return; | |
348e048f | 4712 | |
78d4d2c5 JK |
4713 | /* We can't set abfd until now because the section may be empty or |
4714 | not present, in which case the bfd is unknown. */ | |
4715 | abfd = get_section_bfd_owner (section); | |
348e048f | 4716 | |
78d4d2c5 JK |
4717 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4718 | because we don't need to read any dies: the signature is in the | |
4719 | header. */ | |
3019eac3 | 4720 | |
78d4d2c5 JK |
4721 | end_ptr = info_ptr + section->size; |
4722 | while (info_ptr < end_ptr) | |
4723 | { | |
4724 | sect_offset offset; | |
78d4d2c5 JK |
4725 | struct signatured_type *sig_type; |
4726 | struct dwo_unit *dwo_tu; | |
4727 | void **slot; | |
4728 | const gdb_byte *ptr = info_ptr; | |
4729 | struct comp_unit_head header; | |
4730 | unsigned int length; | |
8b70b953 | 4731 | |
78d4d2c5 | 4732 | offset.sect_off = ptr - section->buffer; |
348e048f | 4733 | |
78d4d2c5 JK |
4734 | /* We need to read the type's signature in order to build the hash |
4735 | table, but we don't need anything else just yet. */ | |
348e048f | 4736 | |
43988095 JK |
4737 | ptr = read_and_check_comp_unit_head (&header, section, |
4738 | abbrev_section, ptr, section_kind); | |
348e048f | 4739 | |
78d4d2c5 | 4740 | length = get_cu_length (&header); |
6caca83c | 4741 | |
78d4d2c5 JK |
4742 | /* Skip dummy type units. */ |
4743 | if (ptr >= info_ptr + length | |
43988095 JK |
4744 | || peek_abbrev_code (abfd, ptr) == 0 |
4745 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
4746 | { |
4747 | info_ptr += length; | |
4748 | continue; | |
4749 | } | |
dee91e82 | 4750 | |
78d4d2c5 JK |
4751 | if (types_htab == NULL) |
4752 | { | |
4753 | if (dwo_file) | |
4754 | types_htab = allocate_dwo_unit_table (objfile); | |
4755 | else | |
4756 | types_htab = allocate_signatured_type_table (objfile); | |
4757 | } | |
8b70b953 | 4758 | |
78d4d2c5 JK |
4759 | if (dwo_file) |
4760 | { | |
4761 | sig_type = NULL; | |
4762 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4763 | struct dwo_unit); | |
4764 | dwo_tu->dwo_file = dwo_file; | |
43988095 JK |
4765 | dwo_tu->signature = header.signature; |
4766 | dwo_tu->type_offset_in_tu = header.type_offset_in_tu; | |
78d4d2c5 JK |
4767 | dwo_tu->section = section; |
4768 | dwo_tu->offset = offset; | |
4769 | dwo_tu->length = length; | |
4770 | } | |
4771 | else | |
4772 | { | |
4773 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4774 | The real type_offset is in the DWO file. */ | |
4775 | dwo_tu = NULL; | |
4776 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4777 | struct signatured_type); | |
43988095 JK |
4778 | sig_type->signature = header.signature; |
4779 | sig_type->type_offset_in_tu = header.type_offset_in_tu; | |
78d4d2c5 JK |
4780 | sig_type->per_cu.objfile = objfile; |
4781 | sig_type->per_cu.is_debug_types = 1; | |
4782 | sig_type->per_cu.section = section; | |
4783 | sig_type->per_cu.offset = offset; | |
4784 | sig_type->per_cu.length = length; | |
4785 | } | |
4786 | ||
4787 | slot = htab_find_slot (types_htab, | |
4788 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4789 | INSERT); | |
4790 | gdb_assert (slot != NULL); | |
4791 | if (*slot != NULL) | |
4792 | { | |
4793 | sect_offset dup_offset; | |
0349ea22 | 4794 | |
3019eac3 DE |
4795 | if (dwo_file) |
4796 | { | |
78d4d2c5 JK |
4797 | const struct dwo_unit *dup_tu |
4798 | = (const struct dwo_unit *) *slot; | |
4799 | ||
4800 | dup_offset = dup_tu->offset; | |
3019eac3 DE |
4801 | } |
4802 | else | |
4803 | { | |
78d4d2c5 JK |
4804 | const struct signatured_type *dup_tu |
4805 | = (const struct signatured_type *) *slot; | |
4806 | ||
4807 | dup_offset = dup_tu->per_cu.offset; | |
3019eac3 | 4808 | } |
8b70b953 | 4809 | |
78d4d2c5 JK |
4810 | complaint (&symfile_complaints, |
4811 | _("debug type entry at offset 0x%x is duplicate to" | |
4812 | " the entry at offset 0x%x, signature %s"), | |
4813 | offset.sect_off, dup_offset.sect_off, | |
43988095 | 4814 | hex_string (header.signature)); |
78d4d2c5 JK |
4815 | } |
4816 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 4817 | |
78d4d2c5 JK |
4818 | if (dwarf_read_debug > 1) |
4819 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", | |
4820 | offset.sect_off, | |
43988095 | 4821 | hex_string (header.signature)); |
3019eac3 | 4822 | |
78d4d2c5 JK |
4823 | info_ptr += length; |
4824 | } | |
4825 | } | |
3019eac3 | 4826 | |
78d4d2c5 JK |
4827 | /* Create the hash table of all entries in the .debug_types |
4828 | (or .debug_types.dwo) section(s). | |
4829 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4830 | otherwise it is NULL. | |
b3c8eb43 | 4831 | |
78d4d2c5 | 4832 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 4833 | |
78d4d2c5 | 4834 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 4835 | |
78d4d2c5 JK |
4836 | static void |
4837 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4838 | VEC (dwarf2_section_info_def) *types, | |
4839 | htab_t &types_htab) | |
4840 | { | |
4841 | int ix; | |
4842 | struct dwarf2_section_info *section; | |
4843 | ||
4844 | if (VEC_empty (dwarf2_section_info_def, types)) | |
4845 | return; | |
348e048f | 4846 | |
78d4d2c5 JK |
4847 | for (ix = 0; |
4848 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
4849 | ++ix) | |
43988095 JK |
4850 | create_debug_type_hash_table (dwo_file, section, types_htab, |
4851 | rcuh_kind::TYPE); | |
3019eac3 DE |
4852 | } |
4853 | ||
4854 | /* Create the hash table of all entries in the .debug_types section, | |
4855 | and initialize all_type_units. | |
4856 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4857 | otherwise non-zero. */ | |
4858 | ||
4859 | static int | |
4860 | create_all_type_units (struct objfile *objfile) | |
4861 | { | |
78d4d2c5 | 4862 | htab_t types_htab = NULL; |
b4dd5633 | 4863 | struct signatured_type **iter; |
3019eac3 | 4864 | |
43988095 JK |
4865 | create_debug_type_hash_table (NULL, &dwarf2_per_objfile->info, types_htab, |
4866 | rcuh_kind::COMPILE); | |
78d4d2c5 | 4867 | create_debug_types_hash_table (NULL, dwarf2_per_objfile->types, types_htab); |
3019eac3 DE |
4868 | if (types_htab == NULL) |
4869 | { | |
4870 | dwarf2_per_objfile->signatured_types = NULL; | |
4871 | return 0; | |
4872 | } | |
4873 | ||
348e048f DE |
4874 | dwarf2_per_objfile->signatured_types = types_htab; |
4875 | ||
6aa5f3a6 DE |
4876 | dwarf2_per_objfile->n_type_units |
4877 | = dwarf2_per_objfile->n_allocated_type_units | |
4878 | = htab_elements (types_htab); | |
8d749320 SM |
4879 | dwarf2_per_objfile->all_type_units = |
4880 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
d467dd73 DE |
4881 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4882 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4883 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4884 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4885 | |
348e048f DE |
4886 | return 1; |
4887 | } | |
4888 | ||
6aa5f3a6 DE |
4889 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
4890 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
4891 | Otherwise we find one. */ | |
4892 | ||
4893 | static struct signatured_type * | |
4894 | add_type_unit (ULONGEST sig, void **slot) | |
4895 | { | |
4896 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4897 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
4898 | struct signatured_type *sig_type; | |
4899 | ||
4900 | gdb_assert (n_type_units <= dwarf2_per_objfile->n_allocated_type_units); | |
4901 | ++n_type_units; | |
4902 | if (n_type_units > dwarf2_per_objfile->n_allocated_type_units) | |
4903 | { | |
4904 | if (dwarf2_per_objfile->n_allocated_type_units == 0) | |
4905 | dwarf2_per_objfile->n_allocated_type_units = 1; | |
4906 | dwarf2_per_objfile->n_allocated_type_units *= 2; | |
4907 | dwarf2_per_objfile->all_type_units | |
224c3ddb SM |
4908 | = XRESIZEVEC (struct signatured_type *, |
4909 | dwarf2_per_objfile->all_type_units, | |
4910 | dwarf2_per_objfile->n_allocated_type_units); | |
6aa5f3a6 DE |
4911 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; |
4912 | } | |
4913 | dwarf2_per_objfile->n_type_units = n_type_units; | |
4914 | ||
4915 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4916 | struct signatured_type); | |
4917 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
4918 | sig_type->signature = sig; | |
4919 | sig_type->per_cu.is_debug_types = 1; | |
4920 | if (dwarf2_per_objfile->using_index) | |
4921 | { | |
4922 | sig_type->per_cu.v.quick = | |
4923 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4924 | struct dwarf2_per_cu_quick_data); | |
4925 | } | |
4926 | ||
4927 | if (slot == NULL) | |
4928 | { | |
4929 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4930 | sig_type, INSERT); | |
4931 | } | |
4932 | gdb_assert (*slot == NULL); | |
4933 | *slot = sig_type; | |
4934 | /* The rest of sig_type must be filled in by the caller. */ | |
4935 | return sig_type; | |
4936 | } | |
4937 | ||
a2ce51a0 DE |
4938 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
4939 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
4940 | ||
4941 | static void | |
4942 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
4943 | struct signatured_type *sig_entry, | |
4944 | struct dwo_unit *dwo_entry) | |
4945 | { | |
7ee85ab1 | 4946 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
4947 | gdb_assert (! sig_entry->per_cu.queued); |
4948 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
4949 | if (dwarf2_per_objfile->using_index) |
4950 | { | |
4951 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 4952 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
4953 | } |
4954 | else | |
4955 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 DE |
4956 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
4957 | gdb_assert (sig_entry->type_offset_in_section.sect_off == 0); | |
4958 | gdb_assert (sig_entry->type_unit_group == NULL); | |
7ee85ab1 DE |
4959 | gdb_assert (sig_entry->dwo_unit == NULL); |
4960 | ||
4961 | sig_entry->per_cu.section = dwo_entry->section; | |
4962 | sig_entry->per_cu.offset = dwo_entry->offset; | |
4963 | sig_entry->per_cu.length = dwo_entry->length; | |
4964 | sig_entry->per_cu.reading_dwo_directly = 1; | |
4965 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
4966 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
4967 | sig_entry->dwo_unit = dwo_entry; | |
4968 | } | |
4969 | ||
4970 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
4971 | If we haven't read the TU yet, create the signatured_type data structure |
4972 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
4973 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
4974 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
4975 | containing that CU. Otherwise we could end up reading several other DWO | |
4976 | files (due to comdat folding) to process the transitive closure of all the | |
4977 | mentioned TUs, and that can be slow. The current DWO file will have every | |
4978 | type signature that it needs. | |
a2ce51a0 DE |
4979 | We only do this for .gdb_index because in the psymtab case we already have |
4980 | to read all the DWOs to build the type unit groups. */ | |
4981 | ||
4982 | static struct signatured_type * | |
4983 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4984 | { | |
4985 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4986 | struct dwo_file *dwo_file; | |
4987 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
4988 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 4989 | void **slot; |
a2ce51a0 DE |
4990 | |
4991 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4992 | ||
6aa5f3a6 DE |
4993 | /* If TU skeletons have been removed then we may not have read in any |
4994 | TUs yet. */ | |
4995 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4996 | { | |
4997 | dwarf2_per_objfile->signatured_types | |
4998 | = allocate_signatured_type_table (objfile); | |
4999 | } | |
a2ce51a0 DE |
5000 | |
5001 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
5002 | Use the global signatured_types array to do our own comdat-folding |
5003 | of types. If this is the first time we're reading this TU, and | |
5004 | the TU has an entry in .gdb_index, replace the recorded data from | |
5005 | .gdb_index with this TU. */ | |
a2ce51a0 | 5006 | |
a2ce51a0 | 5007 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
5008 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
5009 | &find_sig_entry, INSERT); | |
9a3c8263 | 5010 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
5011 | |
5012 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
5013 | read. Don't reassign the global entry to point to this DWO if that's |
5014 | the case. Also note that if the TU is already being read, it may not | |
5015 | have come from a DWO, the program may be a mix of Fission-compiled | |
5016 | code and non-Fission-compiled code. */ | |
5017 | ||
5018 | /* Have we already tried to read this TU? | |
5019 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
5020 | needn't exist in the global table yet). */ | |
5021 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
5022 | return sig_entry; |
5023 | ||
6aa5f3a6 DE |
5024 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
5025 | dwo_unit of the TU itself. */ | |
5026 | dwo_file = cu->dwo_unit->dwo_file; | |
5027 | ||
a2ce51a0 DE |
5028 | /* Ok, this is the first time we're reading this TU. */ |
5029 | if (dwo_file->tus == NULL) | |
5030 | return NULL; | |
5031 | find_dwo_entry.signature = sig; | |
9a3c8263 | 5032 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
5033 | if (dwo_entry == NULL) |
5034 | return NULL; | |
5035 | ||
6aa5f3a6 DE |
5036 | /* If the global table doesn't have an entry for this TU, add one. */ |
5037 | if (sig_entry == NULL) | |
5038 | sig_entry = add_type_unit (sig, slot); | |
5039 | ||
a2ce51a0 | 5040 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
89e63ee4 | 5041 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
5042 | return sig_entry; |
5043 | } | |
5044 | ||
a2ce51a0 DE |
5045 | /* Subroutine of lookup_signatured_type. |
5046 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
5047 | then try the DWP file. If the TU stub (skeleton) has been removed then |
5048 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
5049 | |
5050 | static struct signatured_type * | |
5051 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
5052 | { | |
5053 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5054 | struct dwp_file *dwp_file = get_dwp_file (); | |
5055 | struct dwo_unit *dwo_entry; | |
5056 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 5057 | void **slot; |
a2ce51a0 DE |
5058 | |
5059 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
5060 | gdb_assert (dwp_file != NULL); | |
5061 | ||
6aa5f3a6 DE |
5062 | /* If TU skeletons have been removed then we may not have read in any |
5063 | TUs yet. */ | |
5064 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 5065 | { |
6aa5f3a6 DE |
5066 | dwarf2_per_objfile->signatured_types |
5067 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
5068 | } |
5069 | ||
6aa5f3a6 DE |
5070 | find_sig_entry.signature = sig; |
5071 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
5072 | &find_sig_entry, INSERT); | |
9a3c8263 | 5073 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
5074 | |
5075 | /* Have we already tried to read this TU? | |
5076 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
5077 | needn't exist in the global table yet). */ | |
5078 | if (sig_entry != NULL) | |
5079 | return sig_entry; | |
5080 | ||
a2ce51a0 DE |
5081 | if (dwp_file->tus == NULL) |
5082 | return NULL; | |
57d63ce2 DE |
5083 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
5084 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
5085 | if (dwo_entry == NULL) |
5086 | return NULL; | |
5087 | ||
6aa5f3a6 | 5088 | sig_entry = add_type_unit (sig, slot); |
a2ce51a0 DE |
5089 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
5090 | ||
a2ce51a0 DE |
5091 | return sig_entry; |
5092 | } | |
5093 | ||
380bca97 | 5094 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
5095 | Returns NULL if signature SIG is not present in the table. |
5096 | It is up to the caller to complain about this. */ | |
348e048f DE |
5097 | |
5098 | static struct signatured_type * | |
a2ce51a0 | 5099 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 5100 | { |
a2ce51a0 DE |
5101 | if (cu->dwo_unit |
5102 | && dwarf2_per_objfile->using_index) | |
5103 | { | |
5104 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
5105 | These cases require special processing. */ | |
5106 | if (get_dwp_file () == NULL) | |
5107 | return lookup_dwo_signatured_type (cu, sig); | |
5108 | else | |
5109 | return lookup_dwp_signatured_type (cu, sig); | |
5110 | } | |
5111 | else | |
5112 | { | |
5113 | struct signatured_type find_entry, *entry; | |
348e048f | 5114 | |
a2ce51a0 DE |
5115 | if (dwarf2_per_objfile->signatured_types == NULL) |
5116 | return NULL; | |
5117 | find_entry.signature = sig; | |
9a3c8263 SM |
5118 | entry = ((struct signatured_type *) |
5119 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
5120 | return entry; |
5121 | } | |
348e048f | 5122 | } |
42e7ad6c DE |
5123 | \f |
5124 | /* Low level DIE reading support. */ | |
348e048f | 5125 | |
d85a05f0 DJ |
5126 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
5127 | ||
5128 | static void | |
5129 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 5130 | struct dwarf2_cu *cu, |
3019eac3 DE |
5131 | struct dwarf2_section_info *section, |
5132 | struct dwo_file *dwo_file) | |
d85a05f0 | 5133 | { |
fceca515 | 5134 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 5135 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 5136 | reader->cu = cu; |
3019eac3 | 5137 | reader->dwo_file = dwo_file; |
dee91e82 DE |
5138 | reader->die_section = section; |
5139 | reader->buffer = section->buffer; | |
f664829e | 5140 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 5141 | reader->comp_dir = NULL; |
d85a05f0 DJ |
5142 | } |
5143 | ||
b0c7bfa9 DE |
5144 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
5145 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
5146 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
5147 | already. | |
5148 | ||
5149 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
5150 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
5151 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
5152 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
5153 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
5154 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
5155 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
5156 | are filled in with the info of the DIE from the DWO file. | |
5157 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
5158 | provided an abbrev table to use. | |
5159 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
5160 | ||
5161 | static int | |
5162 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
5163 | struct dwo_unit *dwo_unit, | |
5164 | int abbrev_table_provided, | |
5165 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 5166 | const char *stub_comp_dir, |
b0c7bfa9 | 5167 | struct die_reader_specs *result_reader, |
d521ce57 | 5168 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
5169 | struct die_info **result_comp_unit_die, |
5170 | int *result_has_children) | |
5171 | { | |
5172 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5173 | struct dwarf2_cu *cu = this_cu->cu; | |
5174 | struct dwarf2_section_info *section; | |
5175 | bfd *abfd; | |
d521ce57 | 5176 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
5177 | ULONGEST signature; /* Or dwo_id. */ |
5178 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
5179 | int i,num_extra_attrs; | |
5180 | struct dwarf2_section_info *dwo_abbrev_section; | |
5181 | struct attribute *attr; | |
5182 | struct die_info *comp_unit_die; | |
5183 | ||
b0aeadb3 DE |
5184 | /* At most one of these may be provided. */ |
5185 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 5186 | |
b0c7bfa9 DE |
5187 | /* These attributes aren't processed until later: |
5188 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
5189 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
5190 | referenced later. However, these attributes are found in the stub | |
5191 | which we won't have later. In order to not impose this complication | |
5192 | on the rest of the code, we read them here and copy them to the | |
5193 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
5194 | |
5195 | stmt_list = NULL; | |
5196 | low_pc = NULL; | |
5197 | high_pc = NULL; | |
5198 | ranges = NULL; | |
5199 | comp_dir = NULL; | |
5200 | ||
5201 | if (stub_comp_unit_die != NULL) | |
5202 | { | |
5203 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
5204 | DWO file. */ | |
5205 | if (! this_cu->is_debug_types) | |
5206 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
5207 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
5208 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
5209 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
5210 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
5211 | ||
5212 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
5213 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
5214 | cu->addr_base = 0; | |
5215 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
5216 | if (attr) | |
5217 | cu->addr_base = DW_UNSND (attr); | |
5218 | ||
5219 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
5220 | We need the value before we can process DW_AT_ranges. */ | |
5221 | cu->ranges_base = 0; | |
5222 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
5223 | if (attr) | |
5224 | cu->ranges_base = DW_UNSND (attr); | |
5225 | } | |
a2ce51a0 DE |
5226 | else if (stub_comp_dir != NULL) |
5227 | { | |
5228 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 5229 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
5230 | comp_dir->name = DW_AT_comp_dir; |
5231 | comp_dir->form = DW_FORM_string; | |
5232 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
5233 | DW_STRING (comp_dir) = stub_comp_dir; | |
5234 | } | |
b0c7bfa9 DE |
5235 | |
5236 | /* Set up for reading the DWO CU/TU. */ | |
5237 | cu->dwo_unit = dwo_unit; | |
5238 | section = dwo_unit->section; | |
5239 | dwarf2_read_section (objfile, section); | |
a32a8923 | 5240 | abfd = get_section_bfd_owner (section); |
b0c7bfa9 DE |
5241 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
5242 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; | |
5243 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
5244 | ||
5245 | if (this_cu->is_debug_types) | |
5246 | { | |
b0c7bfa9 DE |
5247 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
5248 | ||
43988095 | 5249 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
b0c7bfa9 | 5250 | dwo_abbrev_section, |
43988095 | 5251 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 5252 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 5253 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
5254 | { |
5255 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
5256 | " TU at offset 0x%x [in module %s]"), | |
5257 | hex_string (sig_type->signature), | |
43988095 | 5258 | hex_string (cu->header.signature), |
a2ce51a0 DE |
5259 | dwo_unit->offset.sect_off, |
5260 | bfd_get_filename (abfd)); | |
5261 | } | |
b0c7bfa9 DE |
5262 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
5263 | /* For DWOs coming from DWP files, we don't know the CU length | |
5264 | nor the type's offset in the TU until now. */ | |
5265 | dwo_unit->length = get_cu_length (&cu->header); | |
43988095 | 5266 | dwo_unit->type_offset_in_tu = cu->header.type_offset_in_tu; |
b0c7bfa9 DE |
5267 | |
5268 | /* Establish the type offset that can be used to lookup the type. | |
5269 | For DWO files, we don't know it until now. */ | |
5270 | sig_type->type_offset_in_section.sect_off = | |
5271 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
5272 | } | |
5273 | else | |
5274 | { | |
5275 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
5276 | dwo_abbrev_section, | |
43988095 | 5277 | info_ptr, rcuh_kind::COMPILE); |
b0c7bfa9 DE |
5278 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
5279 | /* For DWOs coming from DWP files, we don't know the CU length | |
5280 | until now. */ | |
5281 | dwo_unit->length = get_cu_length (&cu->header); | |
5282 | } | |
5283 | ||
02142a6c DE |
5284 | /* Replace the CU's original abbrev table with the DWO's. |
5285 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
5286 | if (abbrev_table_provided) |
5287 | { | |
5288 | /* Don't free the provided abbrev table, the caller of | |
5289 | init_cutu_and_read_dies owns it. */ | |
5290 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5291 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
5292 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5293 | } | |
5294 | else | |
5295 | { | |
5296 | dwarf2_free_abbrev_table (cu); | |
5297 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5298 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
5299 | } |
5300 | ||
5301 | /* Read in the die, but leave space to copy over the attributes | |
5302 | from the stub. This has the benefit of simplifying the rest of | |
5303 | the code - all the work to maintain the illusion of a single | |
5304 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
5305 | num_extra_attrs = ((stmt_list != NULL) | |
5306 | + (low_pc != NULL) | |
5307 | + (high_pc != NULL) | |
5308 | + (ranges != NULL) | |
5309 | + (comp_dir != NULL)); | |
5310 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
5311 | result_has_children, num_extra_attrs); | |
5312 | ||
5313 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
5314 | comp_unit_die = *result_comp_unit_die; | |
5315 | i = comp_unit_die->num_attrs; | |
5316 | if (stmt_list != NULL) | |
5317 | comp_unit_die->attrs[i++] = *stmt_list; | |
5318 | if (low_pc != NULL) | |
5319 | comp_unit_die->attrs[i++] = *low_pc; | |
5320 | if (high_pc != NULL) | |
5321 | comp_unit_die->attrs[i++] = *high_pc; | |
5322 | if (ranges != NULL) | |
5323 | comp_unit_die->attrs[i++] = *ranges; | |
5324 | if (comp_dir != NULL) | |
5325 | comp_unit_die->attrs[i++] = *comp_dir; | |
5326 | comp_unit_die->num_attrs += num_extra_attrs; | |
5327 | ||
b4f54984 | 5328 | if (dwarf_die_debug) |
bf6af496 DE |
5329 | { |
5330 | fprintf_unfiltered (gdb_stdlog, | |
5331 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 5332 | get_section_name (section), |
bf6af496 DE |
5333 | (unsigned) (begin_info_ptr - section->buffer), |
5334 | bfd_get_filename (abfd)); | |
b4f54984 | 5335 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
5336 | } |
5337 | ||
a2ce51a0 DE |
5338 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
5339 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
5340 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
5341 | to get it via circuitous means. Blech. */ | |
5342 | if (comp_dir != NULL) | |
5343 | result_reader->comp_dir = DW_STRING (comp_dir); | |
5344 | ||
b0c7bfa9 DE |
5345 | /* Skip dummy compilation units. */ |
5346 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
5347 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
5348 | return 0; | |
5349 | ||
5350 | *result_info_ptr = info_ptr; | |
5351 | return 1; | |
5352 | } | |
5353 | ||
5354 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
5355 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 5356 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
5357 | |
5358 | static struct dwo_unit * | |
5359 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
5360 | struct die_info *comp_unit_die) | |
5361 | { | |
5362 | struct dwarf2_cu *cu = this_cu->cu; | |
5363 | struct attribute *attr; | |
5364 | ULONGEST signature; | |
5365 | struct dwo_unit *dwo_unit; | |
5366 | const char *comp_dir, *dwo_name; | |
5367 | ||
a2ce51a0 DE |
5368 | gdb_assert (cu != NULL); |
5369 | ||
b0c7bfa9 | 5370 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
5371 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5372 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
5373 | |
5374 | if (this_cu->is_debug_types) | |
5375 | { | |
5376 | struct signatured_type *sig_type; | |
5377 | ||
5378 | /* Since this_cu is the first member of struct signatured_type, | |
5379 | we can go from a pointer to one to a pointer to the other. */ | |
5380 | sig_type = (struct signatured_type *) this_cu; | |
5381 | signature = sig_type->signature; | |
5382 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
5383 | } | |
5384 | else | |
5385 | { | |
5386 | struct attribute *attr; | |
5387 | ||
5388 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
5389 | if (! attr) | |
5390 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
5391 | " [in module %s]"), | |
4262abfb | 5392 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
5393 | signature = DW_UNSND (attr); |
5394 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
5395 | signature); | |
5396 | } | |
5397 | ||
b0c7bfa9 DE |
5398 | return dwo_unit; |
5399 | } | |
5400 | ||
a2ce51a0 | 5401 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 DE |
5402 | See it for a description of the parameters. |
5403 | Read a TU directly from a DWO file, bypassing the stub. | |
5404 | ||
5405 | Note: This function could be a little bit simpler if we shared cleanups | |
5406 | with our caller, init_cutu_and_read_dies. That's generally a fragile thing | |
5407 | to do, so we keep this function self-contained. Or we could move this | |
5408 | into our caller, but it's complex enough already. */ | |
a2ce51a0 DE |
5409 | |
5410 | static void | |
6aa5f3a6 DE |
5411 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
5412 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
5413 | die_reader_func_ftype *die_reader_func, |
5414 | void *data) | |
5415 | { | |
5416 | struct dwarf2_cu *cu; | |
5417 | struct signatured_type *sig_type; | |
6aa5f3a6 | 5418 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
a2ce51a0 DE |
5419 | struct die_reader_specs reader; |
5420 | const gdb_byte *info_ptr; | |
5421 | struct die_info *comp_unit_die; | |
5422 | int has_children; | |
5423 | ||
5424 | /* Verify we can do the following downcast, and that we have the | |
5425 | data we need. */ | |
5426 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
5427 | sig_type = (struct signatured_type *) this_cu; | |
5428 | gdb_assert (sig_type->dwo_unit != NULL); | |
5429 | ||
5430 | cleanups = make_cleanup (null_cleanup, NULL); | |
5431 | ||
6aa5f3a6 DE |
5432 | if (use_existing_cu && this_cu->cu != NULL) |
5433 | { | |
5434 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
5435 | cu = this_cu->cu; | |
5436 | /* There's no need to do the rereading_dwo_cu handling that | |
5437 | init_cutu_and_read_dies does since we don't read the stub. */ | |
5438 | } | |
5439 | else | |
5440 | { | |
5441 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5442 | gdb_assert (this_cu->cu == NULL); | |
8d749320 | 5443 | cu = XNEW (struct dwarf2_cu); |
6aa5f3a6 DE |
5444 | init_one_comp_unit (cu, this_cu); |
5445 | /* If an error occurs while loading, release our storage. */ | |
5446 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
5447 | } | |
5448 | ||
5449 | /* A future optimization, if needed, would be to use an existing | |
5450 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
5451 | could share abbrev tables. */ | |
a2ce51a0 DE |
5452 | |
5453 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
5454 | 0 /* abbrev_table_provided */, | |
5455 | NULL /* stub_comp_unit_die */, | |
5456 | sig_type->dwo_unit->dwo_file->comp_dir, | |
5457 | &reader, &info_ptr, | |
5458 | &comp_unit_die, &has_children) == 0) | |
5459 | { | |
5460 | /* Dummy die. */ | |
5461 | do_cleanups (cleanups); | |
5462 | return; | |
5463 | } | |
5464 | ||
5465 | /* All the "real" work is done here. */ | |
5466 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5467 | ||
6aa5f3a6 | 5468 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
5469 | but the alternative is making the latter more complex. |
5470 | This function is only for the special case of using DWO files directly: | |
5471 | no point in overly complicating the general case just to handle this. */ | |
6aa5f3a6 | 5472 | if (free_cu_cleanup != NULL) |
a2ce51a0 | 5473 | { |
6aa5f3a6 DE |
5474 | if (keep) |
5475 | { | |
5476 | /* We've successfully allocated this compilation unit. Let our | |
5477 | caller clean it up when finished with it. */ | |
5478 | discard_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5479 | |
6aa5f3a6 DE |
5480 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5481 | So we have to manually free the abbrev table. */ | |
5482 | dwarf2_free_abbrev_table (cu); | |
a2ce51a0 | 5483 | |
6aa5f3a6 DE |
5484 | /* Link this CU into read_in_chain. */ |
5485 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5486 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5487 | } | |
5488 | else | |
5489 | do_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5490 | } |
a2ce51a0 DE |
5491 | |
5492 | do_cleanups (cleanups); | |
5493 | } | |
5494 | ||
fd820528 | 5495 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 5496 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 5497 | |
f4dc4d17 DE |
5498 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
5499 | Otherwise the table specified in the comp unit header is read in and used. | |
5500 | This is an optimization for when we already have the abbrev table. | |
5501 | ||
dee91e82 DE |
5502 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
5503 | Otherwise, a new CU is allocated with xmalloc. | |
5504 | ||
5505 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
5506 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
5507 | ||
5508 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 5509 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 5510 | |
70221824 | 5511 | static void |
fd820528 | 5512 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 5513 | struct abbrev_table *abbrev_table, |
fd820528 DE |
5514 | int use_existing_cu, int keep, |
5515 | die_reader_func_ftype *die_reader_func, | |
5516 | void *data) | |
c906108c | 5517 | { |
dee91e82 | 5518 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 5519 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5520 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5521 | struct dwarf2_cu *cu; |
d521ce57 | 5522 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 5523 | struct die_reader_specs reader; |
d85a05f0 | 5524 | struct die_info *comp_unit_die; |
dee91e82 | 5525 | int has_children; |
d85a05f0 | 5526 | struct attribute *attr; |
365156ad | 5527 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 5528 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 5529 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
5530 | /* Non-zero if CU currently points to a DWO file and we need to |
5531 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 5532 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 5533 | int rereading_dwo_cu = 0; |
c906108c | 5534 | |
b4f54984 | 5535 | if (dwarf_die_debug) |
09406207 DE |
5536 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
5537 | this_cu->is_debug_types ? "type" : "comp", | |
5538 | this_cu->offset.sect_off); | |
5539 | ||
dee91e82 DE |
5540 | if (use_existing_cu) |
5541 | gdb_assert (keep); | |
23745b47 | 5542 | |
a2ce51a0 DE |
5543 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
5544 | file (instead of going through the stub), short-circuit all of this. */ | |
5545 | if (this_cu->reading_dwo_directly) | |
5546 | { | |
5547 | /* Narrow down the scope of possibilities to have to understand. */ | |
5548 | gdb_assert (this_cu->is_debug_types); | |
5549 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
5550 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
5551 | die_reader_func, data); | |
a2ce51a0 DE |
5552 | return; |
5553 | } | |
5554 | ||
dee91e82 DE |
5555 | cleanups = make_cleanup (null_cleanup, NULL); |
5556 | ||
5557 | /* This is cheap if the section is already read in. */ | |
5558 | dwarf2_read_section (objfile, section); | |
5559 | ||
5560 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
5561 | |
5562 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
5563 | |
5564 | if (use_existing_cu && this_cu->cu != NULL) | |
5565 | { | |
5566 | cu = this_cu->cu; | |
42e7ad6c DE |
5567 | /* If this CU is from a DWO file we need to start over, we need to |
5568 | refetch the attributes from the skeleton CU. | |
5569 | This could be optimized by retrieving those attributes from when we | |
5570 | were here the first time: the previous comp_unit_die was stored in | |
5571 | comp_unit_obstack. But there's no data yet that we need this | |
5572 | optimization. */ | |
5573 | if (cu->dwo_unit != NULL) | |
5574 | rereading_dwo_cu = 1; | |
dee91e82 DE |
5575 | } |
5576 | else | |
5577 | { | |
5578 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5579 | gdb_assert (this_cu->cu == NULL); | |
8d749320 | 5580 | cu = XNEW (struct dwarf2_cu); |
dee91e82 | 5581 | init_one_comp_unit (cu, this_cu); |
dee91e82 | 5582 | /* If an error occurs while loading, release our storage. */ |
365156ad | 5583 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 5584 | } |
dee91e82 | 5585 | |
b0c7bfa9 | 5586 | /* Get the header. */ |
42e7ad6c DE |
5587 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
5588 | { | |
5589 | /* We already have the header, there's no need to read it in again. */ | |
5590 | info_ptr += cu->header.first_die_offset.cu_off; | |
5591 | } | |
5592 | else | |
5593 | { | |
3019eac3 | 5594 | if (this_cu->is_debug_types) |
dee91e82 | 5595 | { |
43988095 | 5596 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4bdcc0c1 | 5597 | abbrev_section, info_ptr, |
43988095 | 5598 | rcuh_kind::TYPE); |
dee91e82 | 5599 | |
42e7ad6c DE |
5600 | /* Since per_cu is the first member of struct signatured_type, |
5601 | we can go from a pointer to one to a pointer to the other. */ | |
5602 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 5603 | gdb_assert (sig_type->signature == cu->header.signature); |
42e7ad6c | 5604 | gdb_assert (sig_type->type_offset_in_tu.cu_off |
43988095 | 5605 | == cu->header.type_offset_in_tu.cu_off); |
dee91e82 DE |
5606 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
5607 | ||
42e7ad6c DE |
5608 | /* LENGTH has not been set yet for type units if we're |
5609 | using .gdb_index. */ | |
1ce1cefd | 5610 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
5611 | |
5612 | /* Establish the type offset that can be used to lookup the type. */ | |
5613 | sig_type->type_offset_in_section.sect_off = | |
5614 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
43988095 JK |
5615 | |
5616 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
5617 | } |
5618 | else | |
5619 | { | |
4bdcc0c1 DE |
5620 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
5621 | abbrev_section, | |
43988095 JK |
5622 | info_ptr, |
5623 | rcuh_kind::COMPILE); | |
dee91e82 DE |
5624 | |
5625 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 5626 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 5627 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
5628 | } |
5629 | } | |
10b3939b | 5630 | |
6caca83c | 5631 | /* Skip dummy compilation units. */ |
dee91e82 | 5632 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
5633 | || peek_abbrev_code (abfd, info_ptr) == 0) |
5634 | { | |
dee91e82 | 5635 | do_cleanups (cleanups); |
21b2bd31 | 5636 | return; |
6caca83c CC |
5637 | } |
5638 | ||
433df2d4 DE |
5639 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
5640 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
5641 | done. Note that it's important that if the CU had an abbrev table |
5642 | on entry we don't free it when we're done: Somewhere up the call stack | |
5643 | it may be in use. */ | |
f4dc4d17 DE |
5644 | if (abbrev_table != NULL) |
5645 | { | |
5646 | gdb_assert (cu->abbrev_table == NULL); | |
5647 | gdb_assert (cu->header.abbrev_offset.sect_off | |
5648 | == abbrev_table->offset.sect_off); | |
5649 | cu->abbrev_table = abbrev_table; | |
5650 | } | |
5651 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 5652 | { |
4bdcc0c1 | 5653 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
5654 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5655 | } | |
42e7ad6c DE |
5656 | else if (rereading_dwo_cu) |
5657 | { | |
5658 | dwarf2_free_abbrev_table (cu); | |
5659 | dwarf2_read_abbrevs (cu, abbrev_section); | |
5660 | } | |
af703f96 | 5661 | |
dee91e82 | 5662 | /* Read the top level CU/TU die. */ |
3019eac3 | 5663 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 5664 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 5665 | |
b0c7bfa9 DE |
5666 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
5667 | from the DWO file. | |
5668 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
5669 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
5670 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5671 | if (attr) | |
5672 | { | |
3019eac3 | 5673 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 5674 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
5675 | |
5676 | if (has_children) | |
6a506a2d DE |
5677 | { |
5678 | complaint (&symfile_complaints, | |
5679 | _("compilation unit with DW_AT_GNU_dwo_name" | |
5680 | " has children (offset 0x%x) [in module %s]"), | |
5681 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
5682 | } | |
b0c7bfa9 | 5683 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 5684 | if (dwo_unit != NULL) |
3019eac3 | 5685 | { |
6a506a2d DE |
5686 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
5687 | abbrev_table != NULL, | |
a2ce51a0 | 5688 | comp_unit_die, NULL, |
6a506a2d DE |
5689 | &reader, &info_ptr, |
5690 | &dwo_comp_unit_die, &has_children) == 0) | |
5691 | { | |
5692 | /* Dummy die. */ | |
5693 | do_cleanups (cleanups); | |
5694 | return; | |
5695 | } | |
5696 | comp_unit_die = dwo_comp_unit_die; | |
5697 | } | |
5698 | else | |
5699 | { | |
5700 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
5701 | the stub. A complaint has already been logged. There's | |
5702 | not much more we can do except pass on the stub DIE to | |
5703 | die_reader_func. We don't want to throw an error on bad | |
5704 | debug info. */ | |
3019eac3 DE |
5705 | } |
5706 | } | |
5707 | ||
b0c7bfa9 | 5708 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
5709 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
5710 | ||
b0c7bfa9 | 5711 | /* Done, clean up. */ |
365156ad | 5712 | if (free_cu_cleanup != NULL) |
348e048f | 5713 | { |
365156ad TT |
5714 | if (keep) |
5715 | { | |
5716 | /* We've successfully allocated this compilation unit. Let our | |
5717 | caller clean it up when finished with it. */ | |
5718 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 5719 | |
365156ad TT |
5720 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5721 | So we have to manually free the abbrev table. */ | |
5722 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 5723 | |
365156ad TT |
5724 | /* Link this CU into read_in_chain. */ |
5725 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5726 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5727 | } | |
5728 | else | |
5729 | do_cleanups (free_cu_cleanup); | |
348e048f | 5730 | } |
365156ad TT |
5731 | |
5732 | do_cleanups (cleanups); | |
dee91e82 DE |
5733 | } |
5734 | ||
33e80786 DE |
5735 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
5736 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
5737 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
5738 | |
5739 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 5740 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
5741 | |
5742 | We fill in THIS_CU->length. | |
5743 | ||
5744 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
5745 | linker) then DIE_READER_FUNC will not get called. | |
5746 | ||
5747 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5748 | This is done in order to not leave THIS_CU->cu in a state where we have |
5749 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
5750 | |
5751 | static void | |
5752 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 5753 | struct dwo_file *dwo_file, |
dee91e82 DE |
5754 | die_reader_func_ftype *die_reader_func, |
5755 | void *data) | |
5756 | { | |
5757 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 5758 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5759 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 5760 | struct dwarf2_section_info *abbrev_section; |
dee91e82 | 5761 | struct dwarf2_cu cu; |
d521ce57 | 5762 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
5763 | struct die_reader_specs reader; |
5764 | struct cleanup *cleanups; | |
5765 | struct die_info *comp_unit_die; | |
5766 | int has_children; | |
5767 | ||
b4f54984 | 5768 | if (dwarf_die_debug) |
09406207 DE |
5769 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
5770 | this_cu->is_debug_types ? "type" : "comp", | |
5771 | this_cu->offset.sect_off); | |
5772 | ||
dee91e82 DE |
5773 | gdb_assert (this_cu->cu == NULL); |
5774 | ||
33e80786 DE |
5775 | abbrev_section = (dwo_file != NULL |
5776 | ? &dwo_file->sections.abbrev | |
5777 | : get_abbrev_section_for_cu (this_cu)); | |
5778 | ||
dee91e82 DE |
5779 | /* This is cheap if the section is already read in. */ |
5780 | dwarf2_read_section (objfile, section); | |
5781 | ||
5782 | init_one_comp_unit (&cu, this_cu); | |
5783 | ||
5784 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
5785 | ||
5786 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
5787 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
5788 | abbrev_section, info_ptr, | |
43988095 JK |
5789 | (this_cu->is_debug_types |
5790 | ? rcuh_kind::TYPE | |
5791 | : rcuh_kind::COMPILE)); | |
dee91e82 | 5792 | |
1ce1cefd | 5793 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
5794 | |
5795 | /* Skip dummy compilation units. */ | |
5796 | if (info_ptr >= begin_info_ptr + this_cu->length | |
5797 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 5798 | { |
dee91e82 | 5799 | do_cleanups (cleanups); |
21b2bd31 | 5800 | return; |
93311388 | 5801 | } |
72bf9492 | 5802 | |
dee91e82 DE |
5803 | dwarf2_read_abbrevs (&cu, abbrev_section); |
5804 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
5805 | ||
3019eac3 | 5806 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
5807 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
5808 | ||
5809 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5810 | ||
5811 | do_cleanups (cleanups); | |
5812 | } | |
5813 | ||
3019eac3 DE |
5814 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
5815 | does not lookup the specified DWO file. | |
5816 | This cannot be used to read DWO files. | |
dee91e82 DE |
5817 | |
5818 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5819 | This is done in order to not leave THIS_CU->cu in a state where we have |
5820 | to care whether it refers to the "main" CU or the DWO CU. | |
5821 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
5822 | |
5823 | static void | |
5824 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
5825 | die_reader_func_ftype *die_reader_func, | |
5826 | void *data) | |
5827 | { | |
33e80786 | 5828 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 5829 | } |
0018ea6f DE |
5830 | \f |
5831 | /* Type Unit Groups. | |
dee91e82 | 5832 | |
0018ea6f DE |
5833 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
5834 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
5835 | so that all types coming from the same compilation (.o file) are grouped | |
5836 | together. A future step could be to put the types in the same symtab as | |
5837 | the CU the types ultimately came from. */ | |
ff013f42 | 5838 | |
f4dc4d17 DE |
5839 | static hashval_t |
5840 | hash_type_unit_group (const void *item) | |
5841 | { | |
9a3c8263 SM |
5842 | const struct type_unit_group *tu_group |
5843 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 5844 | |
094b34ac | 5845 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5846 | } |
348e048f DE |
5847 | |
5848 | static int | |
f4dc4d17 | 5849 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5850 | { |
9a3c8263 SM |
5851 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
5852 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 5853 | |
094b34ac | 5854 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5855 | } |
348e048f | 5856 | |
f4dc4d17 DE |
5857 | /* Allocate a hash table for type unit groups. */ |
5858 | ||
5859 | static htab_t | |
5860 | allocate_type_unit_groups_table (void) | |
5861 | { | |
5862 | return htab_create_alloc_ex (3, | |
5863 | hash_type_unit_group, | |
5864 | eq_type_unit_group, | |
5865 | NULL, | |
5866 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5867 | hashtab_obstack_allocate, | |
5868 | dummy_obstack_deallocate); | |
5869 | } | |
dee91e82 | 5870 | |
f4dc4d17 DE |
5871 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5872 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5873 | of any one psymtab grow too big. */ | |
5874 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5875 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5876 | |
094b34ac | 5877 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5878 | Create the type_unit_group object used to hold one or more TUs. */ |
5879 | ||
5880 | static struct type_unit_group * | |
094b34ac | 5881 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5882 | { |
5883 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5884 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5885 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5886 | |
5887 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5888 | struct type_unit_group); | |
094b34ac | 5889 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 5890 | per_cu->objfile = objfile; |
f4dc4d17 | 5891 | |
094b34ac DE |
5892 | if (dwarf2_per_objfile->using_index) |
5893 | { | |
5894 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5895 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
5896 | } |
5897 | else | |
5898 | { | |
5899 | unsigned int line_offset = line_offset_struct.sect_off; | |
5900 | struct partial_symtab *pst; | |
5901 | char *name; | |
5902 | ||
5903 | /* Give the symtab a useful name for debug purposes. */ | |
5904 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5905 | name = xstrprintf ("<type_units_%d>", | |
5906 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5907 | else | |
5908 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5909 | ||
5910 | pst = create_partial_symtab (per_cu, name); | |
5911 | pst->anonymous = 1; | |
f4dc4d17 | 5912 | |
094b34ac DE |
5913 | xfree (name); |
5914 | } | |
f4dc4d17 | 5915 | |
094b34ac DE |
5916 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5917 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5918 | |
5919 | return tu_group; | |
5920 | } | |
5921 | ||
094b34ac DE |
5922 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5923 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5924 | |
5925 | static struct type_unit_group * | |
ff39bb5e | 5926 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
5927 | { |
5928 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5929 | struct type_unit_group *tu_group; | |
5930 | void **slot; | |
5931 | unsigned int line_offset; | |
5932 | struct type_unit_group type_unit_group_for_lookup; | |
5933 | ||
5934 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5935 | { | |
5936 | dwarf2_per_objfile->type_unit_groups = | |
5937 | allocate_type_unit_groups_table (); | |
5938 | } | |
5939 | ||
5940 | /* Do we need to create a new group, or can we use an existing one? */ | |
5941 | ||
5942 | if (stmt_list) | |
5943 | { | |
5944 | line_offset = DW_UNSND (stmt_list); | |
5945 | ++tu_stats->nr_symtab_sharers; | |
5946 | } | |
5947 | else | |
5948 | { | |
5949 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5950 | We can do various things here like create one group per TU or | |
5951 | spread them over multiple groups to split up the expansion work. | |
5952 | To avoid worst case scenarios (too many groups or too large groups) | |
5953 | we, umm, group them in bunches. */ | |
5954 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5955 | | (tu_stats->nr_stmt_less_type_units | |
5956 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5957 | ++tu_stats->nr_stmt_less_type_units; | |
5958 | } | |
5959 | ||
094b34ac DE |
5960 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5961 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5962 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5963 | &type_unit_group_for_lookup, INSERT); | |
5964 | if (*slot != NULL) | |
5965 | { | |
9a3c8263 | 5966 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
5967 | gdb_assert (tu_group != NULL); |
5968 | } | |
5969 | else | |
5970 | { | |
5971 | sect_offset line_offset_struct; | |
5972 | ||
5973 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5974 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5975 | *slot = tu_group; |
5976 | ++tu_stats->nr_symtabs; | |
5977 | } | |
5978 | ||
5979 | return tu_group; | |
5980 | } | |
0018ea6f DE |
5981 | \f |
5982 | /* Partial symbol tables. */ | |
5983 | ||
5984 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5985 | ||
5986 | The caller must fill in the following details: | |
5987 | dirname, textlow, texthigh. */ | |
5988 | ||
5989 | static struct partial_symtab * | |
5990 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5991 | { | |
5992 | struct objfile *objfile = per_cu->objfile; | |
5993 | struct partial_symtab *pst; | |
5994 | ||
18a94d75 | 5995 | pst = start_psymtab_common (objfile, name, 0, |
0018ea6f DE |
5996 | objfile->global_psymbols.next, |
5997 | objfile->static_psymbols.next); | |
5998 | ||
5999 | pst->psymtabs_addrmap_supported = 1; | |
6000 | ||
6001 | /* This is the glue that links PST into GDB's symbol API. */ | |
6002 | pst->read_symtab_private = per_cu; | |
6003 | pst->read_symtab = dwarf2_read_symtab; | |
6004 | per_cu->v.psymtab = pst; | |
6005 | ||
6006 | return pst; | |
6007 | } | |
6008 | ||
b93601f3 TT |
6009 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
6010 | type. */ | |
6011 | ||
6012 | struct process_psymtab_comp_unit_data | |
6013 | { | |
6014 | /* True if we are reading a DW_TAG_partial_unit. */ | |
6015 | ||
6016 | int want_partial_unit; | |
6017 | ||
6018 | /* The "pretend" language that is used if the CU doesn't declare a | |
6019 | language. */ | |
6020 | ||
6021 | enum language pretend_language; | |
6022 | }; | |
6023 | ||
0018ea6f DE |
6024 | /* die_reader_func for process_psymtab_comp_unit. */ |
6025 | ||
6026 | static void | |
6027 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6028 | const gdb_byte *info_ptr, |
0018ea6f DE |
6029 | struct die_info *comp_unit_die, |
6030 | int has_children, | |
6031 | void *data) | |
6032 | { | |
6033 | struct dwarf2_cu *cu = reader->cu; | |
6034 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 6035 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 6036 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
6037 | CORE_ADDR baseaddr; |
6038 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
6039 | struct partial_symtab *pst; | |
3a2b436a | 6040 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 6041 | const char *filename; |
9a3c8263 SM |
6042 | struct process_psymtab_comp_unit_data *info |
6043 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 6044 | |
b93601f3 | 6045 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
6046 | return; |
6047 | ||
6048 | gdb_assert (! per_cu->is_debug_types); | |
6049 | ||
b93601f3 | 6050 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
6051 | |
6052 | cu->list_in_scope = &file_symbols; | |
6053 | ||
6054 | /* Allocate a new partial symbol table structure. */ | |
7d45c7c3 KB |
6055 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
6056 | if (filename == NULL) | |
0018ea6f | 6057 | filename = ""; |
0018ea6f DE |
6058 | |
6059 | pst = create_partial_symtab (per_cu, filename); | |
6060 | ||
6061 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 6062 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
6063 | |
6064 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6065 | ||
6066 | dwarf2_find_base_address (comp_unit_die, cu); | |
6067 | ||
6068 | /* Possibly set the default values of LOWPC and HIGHPC from | |
6069 | `DW_AT_ranges'. */ | |
3a2b436a JK |
6070 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
6071 | &best_highpc, cu, pst); | |
6072 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
0018ea6f DE |
6073 | /* Store the contiguous range if it is not empty; it can be empty for |
6074 | CUs with no code. */ | |
6075 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
6076 | gdbarch_adjust_dwarf2_addr (gdbarch, |
6077 | best_lowpc + baseaddr), | |
6078 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
6079 | best_highpc + baseaddr) - 1, | |
6080 | pst); | |
0018ea6f DE |
6081 | |
6082 | /* Check if comp unit has_children. | |
6083 | If so, read the rest of the partial symbols from this comp unit. | |
6084 | If not, there's no more debug_info for this comp unit. */ | |
6085 | if (has_children) | |
6086 | { | |
6087 | struct partial_die_info *first_die; | |
6088 | CORE_ADDR lowpc, highpc; | |
6089 | ||
6090 | lowpc = ((CORE_ADDR) -1); | |
6091 | highpc = ((CORE_ADDR) 0); | |
6092 | ||
6093 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6094 | ||
6095 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 6096 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
6097 | |
6098 | /* If we didn't find a lowpc, set it to highpc to avoid | |
6099 | complaints from `maint check'. */ | |
6100 | if (lowpc == ((CORE_ADDR) -1)) | |
6101 | lowpc = highpc; | |
6102 | ||
6103 | /* If the compilation unit didn't have an explicit address range, | |
6104 | then use the information extracted from its child dies. */ | |
e385593e | 6105 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
6106 | { |
6107 | best_lowpc = lowpc; | |
6108 | best_highpc = highpc; | |
6109 | } | |
6110 | } | |
3e29f34a MR |
6111 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
6112 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f | 6113 | |
8763cede | 6114 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
6115 | |
6116 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
6117 | { | |
6118 | int i; | |
6119 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6120 | struct dwarf2_per_cu_data *iter; | |
6121 | ||
6122 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
6123 | post-pass. */ | |
6124 | pst->number_of_dependencies = len; | |
8d749320 SM |
6125 | pst->dependencies = |
6126 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
0018ea6f DE |
6127 | for (i = 0; |
6128 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6129 | i, iter); | |
6130 | ++i) | |
6131 | pst->dependencies[i] = iter->v.psymtab; | |
6132 | ||
6133 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6134 | } | |
6135 | ||
6136 | /* Get the list of files included in the current compilation unit, | |
6137 | and build a psymtab for each of them. */ | |
6138 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
6139 | ||
b4f54984 | 6140 | if (dwarf_read_debug) |
0018ea6f DE |
6141 | { |
6142 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6143 | ||
6144 | fprintf_unfiltered (gdb_stdlog, | |
6145 | "Psymtab for %s unit @0x%x: %s - %s" | |
6146 | ", %d global, %d static syms\n", | |
6147 | per_cu->is_debug_types ? "type" : "comp", | |
6148 | per_cu->offset.sect_off, | |
6149 | paddress (gdbarch, pst->textlow), | |
6150 | paddress (gdbarch, pst->texthigh), | |
6151 | pst->n_global_syms, pst->n_static_syms); | |
6152 | } | |
6153 | } | |
6154 | ||
6155 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6156 | Process compilation unit THIS_CU for a psymtab. */ | |
6157 | ||
6158 | static void | |
6159 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
6160 | int want_partial_unit, |
6161 | enum language pretend_language) | |
0018ea6f | 6162 | { |
b93601f3 TT |
6163 | struct process_psymtab_comp_unit_data info; |
6164 | ||
0018ea6f DE |
6165 | /* If this compilation unit was already read in, free the |
6166 | cached copy in order to read it in again. This is | |
6167 | necessary because we skipped some symbols when we first | |
6168 | read in the compilation unit (see load_partial_dies). | |
6169 | This problem could be avoided, but the benefit is unclear. */ | |
6170 | if (this_cu->cu != NULL) | |
6171 | free_one_cached_comp_unit (this_cu); | |
6172 | ||
6173 | gdb_assert (! this_cu->is_debug_types); | |
b93601f3 TT |
6174 | info.want_partial_unit = want_partial_unit; |
6175 | info.pretend_language = pretend_language; | |
0018ea6f DE |
6176 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
6177 | process_psymtab_comp_unit_reader, | |
b93601f3 | 6178 | &info); |
0018ea6f DE |
6179 | |
6180 | /* Age out any secondary CUs. */ | |
6181 | age_cached_comp_units (); | |
6182 | } | |
f4dc4d17 DE |
6183 | |
6184 | /* Reader function for build_type_psymtabs. */ | |
6185 | ||
6186 | static void | |
6187 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6188 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
6189 | struct die_info *type_unit_die, |
6190 | int has_children, | |
6191 | void *data) | |
6192 | { | |
6193 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6194 | struct dwarf2_cu *cu = reader->cu; | |
6195 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 6196 | struct signatured_type *sig_type; |
f4dc4d17 DE |
6197 | struct type_unit_group *tu_group; |
6198 | struct attribute *attr; | |
6199 | struct partial_die_info *first_die; | |
6200 | CORE_ADDR lowpc, highpc; | |
6201 | struct partial_symtab *pst; | |
6202 | ||
6203 | gdb_assert (data == NULL); | |
0186c6a7 DE |
6204 | gdb_assert (per_cu->is_debug_types); |
6205 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
6206 | |
6207 | if (! has_children) | |
6208 | return; | |
6209 | ||
6210 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 6211 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 6212 | |
0186c6a7 | 6213 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
6214 | |
6215 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
6216 | cu->list_in_scope = &file_symbols; | |
6217 | pst = create_partial_symtab (per_cu, ""); | |
6218 | pst->anonymous = 1; | |
6219 | ||
6220 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6221 | ||
6222 | lowpc = (CORE_ADDR) -1; | |
6223 | highpc = (CORE_ADDR) 0; | |
6224 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
6225 | ||
8763cede | 6226 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
6227 | } |
6228 | ||
73051182 DE |
6229 | /* Struct used to sort TUs by their abbreviation table offset. */ |
6230 | ||
6231 | struct tu_abbrev_offset | |
6232 | { | |
6233 | struct signatured_type *sig_type; | |
6234 | sect_offset abbrev_offset; | |
6235 | }; | |
6236 | ||
6237 | /* Helper routine for build_type_psymtabs_1, passed to qsort. */ | |
6238 | ||
6239 | static int | |
6240 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
6241 | { | |
9a3c8263 SM |
6242 | const struct tu_abbrev_offset * const *a |
6243 | = (const struct tu_abbrev_offset * const*) ap; | |
6244 | const struct tu_abbrev_offset * const *b | |
6245 | = (const struct tu_abbrev_offset * const*) bp; | |
73051182 DE |
6246 | unsigned int aoff = (*a)->abbrev_offset.sect_off; |
6247 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
6248 | ||
6249 | return (aoff > boff) - (aoff < boff); | |
6250 | } | |
6251 | ||
6252 | /* Efficiently read all the type units. | |
6253 | This does the bulk of the work for build_type_psymtabs. | |
6254 | ||
6255 | The efficiency is because we sort TUs by the abbrev table they use and | |
6256 | only read each abbrev table once. In one program there are 200K TUs | |
6257 | sharing 8K abbrev tables. | |
6258 | ||
6259 | The main purpose of this function is to support building the | |
6260 | dwarf2_per_objfile->type_unit_groups table. | |
6261 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
6262 | can collapse the search space by grouping them by stmt_list. | |
6263 | The savings can be significant, in the same program from above the 200K TUs | |
6264 | share 8K stmt_list tables. | |
6265 | ||
6266 | FUNC is expected to call get_type_unit_group, which will create the | |
6267 | struct type_unit_group if necessary and add it to | |
6268 | dwarf2_per_objfile->type_unit_groups. */ | |
6269 | ||
6270 | static void | |
6271 | build_type_psymtabs_1 (void) | |
6272 | { | |
73051182 DE |
6273 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
6274 | struct cleanup *cleanups; | |
6275 | struct abbrev_table *abbrev_table; | |
6276 | sect_offset abbrev_offset; | |
6277 | struct tu_abbrev_offset *sorted_by_abbrev; | |
73051182 DE |
6278 | int i; |
6279 | ||
6280 | /* It's up to the caller to not call us multiple times. */ | |
6281 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
6282 | ||
6283 | if (dwarf2_per_objfile->n_type_units == 0) | |
6284 | return; | |
6285 | ||
6286 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
6287 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
6288 | read each abbrev table in. | |
6289 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
6290 | This is simpler and efficient enough for now. | |
6291 | ||
6292 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
6293 | symtab to use). Typically TUs with the same abbrev offset have the same | |
6294 | stmt_list value too so in practice this should work well. | |
6295 | ||
6296 | The basic algorithm here is: | |
6297 | ||
6298 | sort TUs by abbrev table | |
6299 | for each TU with same abbrev table: | |
6300 | read abbrev table if first user | |
6301 | read TU top level DIE | |
6302 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
6303 | call FUNC */ | |
6304 | ||
b4f54984 | 6305 | if (dwarf_read_debug) |
73051182 DE |
6306 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
6307 | ||
6308 | /* Sort in a separate table to maintain the order of all_type_units | |
6309 | for .gdb_index: TU indices directly index all_type_units. */ | |
6310 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
6311 | dwarf2_per_objfile->n_type_units); | |
6312 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6313 | { | |
6314 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
6315 | ||
6316 | sorted_by_abbrev[i].sig_type = sig_type; | |
6317 | sorted_by_abbrev[i].abbrev_offset = | |
6318 | read_abbrev_offset (sig_type->per_cu.section, | |
6319 | sig_type->per_cu.offset); | |
6320 | } | |
6321 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
6322 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
6323 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
6324 | ||
6325 | abbrev_offset.sect_off = ~(unsigned) 0; | |
6326 | abbrev_table = NULL; | |
6327 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
6328 | ||
6329 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6330 | { | |
6331 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
6332 | ||
6333 | /* Switch to the next abbrev table if necessary. */ | |
6334 | if (abbrev_table == NULL | |
6335 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
6336 | { | |
6337 | if (abbrev_table != NULL) | |
6338 | { | |
6339 | abbrev_table_free (abbrev_table); | |
6340 | /* Reset to NULL in case abbrev_table_read_table throws | |
6341 | an error: abbrev_table_free_cleanup will get called. */ | |
6342 | abbrev_table = NULL; | |
6343 | } | |
6344 | abbrev_offset = tu->abbrev_offset; | |
6345 | abbrev_table = | |
6346 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
6347 | abbrev_offset); | |
6348 | ++tu_stats->nr_uniq_abbrev_tables; | |
6349 | } | |
6350 | ||
6351 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
6352 | build_type_psymtabs_reader, NULL); | |
6353 | } | |
6354 | ||
73051182 | 6355 | do_cleanups (cleanups); |
6aa5f3a6 | 6356 | } |
73051182 | 6357 | |
6aa5f3a6 DE |
6358 | /* Print collected type unit statistics. */ |
6359 | ||
6360 | static void | |
6361 | print_tu_stats (void) | |
6362 | { | |
6363 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6364 | ||
6365 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
6366 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
6367 | dwarf2_per_objfile->n_type_units); | |
6368 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
6369 | tu_stats->nr_uniq_abbrev_tables); | |
6370 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
6371 | tu_stats->nr_symtabs); | |
6372 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
6373 | tu_stats->nr_symtab_sharers); | |
6374 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
6375 | tu_stats->nr_stmt_less_type_units); | |
6376 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
6377 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
6378 | } |
6379 | ||
f4dc4d17 DE |
6380 | /* Traversal function for build_type_psymtabs. */ |
6381 | ||
6382 | static int | |
6383 | build_type_psymtab_dependencies (void **slot, void *info) | |
6384 | { | |
6385 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6386 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 6387 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 6388 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
6389 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
6390 | struct signatured_type *iter; | |
f4dc4d17 DE |
6391 | int i; |
6392 | ||
6393 | gdb_assert (len > 0); | |
0186c6a7 | 6394 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
6395 | |
6396 | pst->number_of_dependencies = len; | |
8d749320 SM |
6397 | pst->dependencies = |
6398 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
f4dc4d17 | 6399 | for (i = 0; |
0186c6a7 | 6400 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
6401 | ++i) |
6402 | { | |
0186c6a7 DE |
6403 | gdb_assert (iter->per_cu.is_debug_types); |
6404 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 6405 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
6406 | } |
6407 | ||
0186c6a7 | 6408 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
6409 | |
6410 | return 1; | |
6411 | } | |
6412 | ||
6413 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6414 | Build partial symbol tables for the .debug_types comp-units. */ | |
6415 | ||
6416 | static void | |
6417 | build_type_psymtabs (struct objfile *objfile) | |
6418 | { | |
0e50663e | 6419 | if (! create_all_type_units (objfile)) |
348e048f DE |
6420 | return; |
6421 | ||
73051182 | 6422 | build_type_psymtabs_1 (); |
6aa5f3a6 | 6423 | } |
f4dc4d17 | 6424 | |
6aa5f3a6 DE |
6425 | /* Traversal function for process_skeletonless_type_unit. |
6426 | Read a TU in a DWO file and build partial symbols for it. */ | |
6427 | ||
6428 | static int | |
6429 | process_skeletonless_type_unit (void **slot, void *info) | |
6430 | { | |
6431 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
9a3c8263 | 6432 | struct objfile *objfile = (struct objfile *) info; |
6aa5f3a6 DE |
6433 | struct signatured_type find_entry, *entry; |
6434 | ||
6435 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
6436 | ||
6437 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6438 | { | |
6439 | dwarf2_per_objfile->signatured_types | |
6440 | = allocate_signatured_type_table (objfile); | |
6441 | } | |
6442 | ||
6443 | find_entry.signature = dwo_unit->signature; | |
6444 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
6445 | INSERT); | |
6446 | /* If we've already seen this type there's nothing to do. What's happening | |
6447 | is we're doing our own version of comdat-folding here. */ | |
6448 | if (*slot != NULL) | |
6449 | return 1; | |
6450 | ||
6451 | /* This does the job that create_all_type_units would have done for | |
6452 | this TU. */ | |
6453 | entry = add_type_unit (dwo_unit->signature, slot); | |
6454 | fill_in_sig_entry_from_dwo_entry (objfile, entry, dwo_unit); | |
6455 | *slot = entry; | |
6456 | ||
6457 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6458 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
6459 | build_type_psymtabs_reader, NULL); | |
6460 | ||
6461 | return 1; | |
6462 | } | |
6463 | ||
6464 | /* Traversal function for process_skeletonless_type_units. */ | |
6465 | ||
6466 | static int | |
6467 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
6468 | { | |
6469 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
6470 | ||
6471 | if (dwo_file->tus != NULL) | |
6472 | { | |
6473 | htab_traverse_noresize (dwo_file->tus, | |
6474 | process_skeletonless_type_unit, info); | |
6475 | } | |
6476 | ||
6477 | return 1; | |
6478 | } | |
6479 | ||
6480 | /* Scan all TUs of DWO files, verifying we've processed them. | |
6481 | This is needed in case a TU was emitted without its skeleton. | |
6482 | Note: This can't be done until we know what all the DWO files are. */ | |
6483 | ||
6484 | static void | |
6485 | process_skeletonless_type_units (struct objfile *objfile) | |
6486 | { | |
6487 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
6488 | if (get_dwp_file () == NULL | |
6489 | && dwarf2_per_objfile->dwo_files != NULL) | |
6490 | { | |
6491 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
6492 | process_dwo_file_for_skeletonless_type_units, | |
6493 | objfile); | |
6494 | } | |
348e048f DE |
6495 | } |
6496 | ||
60606b2c TT |
6497 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
6498 | ||
6499 | static void | |
6500 | psymtabs_addrmap_cleanup (void *o) | |
6501 | { | |
9a3c8263 | 6502 | struct objfile *objfile = (struct objfile *) o; |
ec61707d | 6503 | |
60606b2c TT |
6504 | objfile->psymtabs_addrmap = NULL; |
6505 | } | |
6506 | ||
95554aad TT |
6507 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
6508 | ||
6509 | static void | |
6510 | set_partial_user (struct objfile *objfile) | |
6511 | { | |
6512 | int i; | |
6513 | ||
6514 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
6515 | { | |
8832e7e3 | 6516 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
95554aad TT |
6517 | struct partial_symtab *pst = per_cu->v.psymtab; |
6518 | int j; | |
6519 | ||
36586728 TT |
6520 | if (pst == NULL) |
6521 | continue; | |
6522 | ||
95554aad TT |
6523 | for (j = 0; j < pst->number_of_dependencies; ++j) |
6524 | { | |
6525 | /* Set the 'user' field only if it is not already set. */ | |
6526 | if (pst->dependencies[j]->user == NULL) | |
6527 | pst->dependencies[j]->user = pst; | |
6528 | } | |
6529 | } | |
6530 | } | |
6531 | ||
93311388 DE |
6532 | /* Build the partial symbol table by doing a quick pass through the |
6533 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 6534 | |
93311388 | 6535 | static void |
c67a9c90 | 6536 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 6537 | { |
60606b2c TT |
6538 | struct cleanup *back_to, *addrmap_cleanup; |
6539 | struct obstack temp_obstack; | |
21b2bd31 | 6540 | int i; |
93311388 | 6541 | |
b4f54984 | 6542 | if (dwarf_read_debug) |
45cfd468 DE |
6543 | { |
6544 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 6545 | objfile_name (objfile)); |
45cfd468 DE |
6546 | } |
6547 | ||
98bfdba5 PA |
6548 | dwarf2_per_objfile->reading_partial_symbols = 1; |
6549 | ||
be391dca | 6550 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 6551 | |
93311388 DE |
6552 | /* Any cached compilation units will be linked by the per-objfile |
6553 | read_in_chain. Make sure to free them when we're done. */ | |
6554 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 6555 | |
348e048f DE |
6556 | build_type_psymtabs (objfile); |
6557 | ||
93311388 | 6558 | create_all_comp_units (objfile); |
c906108c | 6559 | |
60606b2c TT |
6560 | /* Create a temporary address map on a temporary obstack. We later |
6561 | copy this to the final obstack. */ | |
6562 | obstack_init (&temp_obstack); | |
6563 | make_cleanup_obstack_free (&temp_obstack); | |
6564 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
6565 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 6566 | |
21b2bd31 | 6567 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 6568 | { |
8832e7e3 | 6569 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
aaa75496 | 6570 | |
b93601f3 | 6571 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 6572 | } |
ff013f42 | 6573 | |
6aa5f3a6 DE |
6574 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
6575 | process_skeletonless_type_units (objfile); | |
6576 | ||
6577 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
6578 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
6579 | { | |
6580 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
6581 | build_type_psymtab_dependencies, NULL); | |
6582 | } | |
6583 | ||
b4f54984 | 6584 | if (dwarf_read_debug) |
6aa5f3a6 DE |
6585 | print_tu_stats (); |
6586 | ||
95554aad TT |
6587 | set_partial_user (objfile); |
6588 | ||
ff013f42 JK |
6589 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
6590 | &objfile->objfile_obstack); | |
60606b2c | 6591 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 6592 | |
ae038cb0 | 6593 | do_cleanups (back_to); |
45cfd468 | 6594 | |
b4f54984 | 6595 | if (dwarf_read_debug) |
45cfd468 | 6596 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 6597 | objfile_name (objfile)); |
ae038cb0 DJ |
6598 | } |
6599 | ||
3019eac3 | 6600 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
6601 | |
6602 | static void | |
dee91e82 | 6603 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 6604 | const gdb_byte *info_ptr, |
dee91e82 DE |
6605 | struct die_info *comp_unit_die, |
6606 | int has_children, | |
6607 | void *data) | |
ae038cb0 | 6608 | { |
dee91e82 | 6609 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 6610 | |
95554aad | 6611 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 6612 | |
ae038cb0 DJ |
6613 | /* Check if comp unit has_children. |
6614 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 6615 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 6616 | if (has_children) |
dee91e82 DE |
6617 | load_partial_dies (reader, info_ptr, 0); |
6618 | } | |
98bfdba5 | 6619 | |
dee91e82 DE |
6620 | /* Load the partial DIEs for a secondary CU into memory. |
6621 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 6622 | |
dee91e82 DE |
6623 | static void |
6624 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
6625 | { | |
f4dc4d17 DE |
6626 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6627 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
6628 | } |
6629 | ||
ae038cb0 | 6630 | static void |
36586728 TT |
6631 | read_comp_units_from_section (struct objfile *objfile, |
6632 | struct dwarf2_section_info *section, | |
6633 | unsigned int is_dwz, | |
6634 | int *n_allocated, | |
6635 | int *n_comp_units, | |
6636 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 6637 | { |
d521ce57 | 6638 | const gdb_byte *info_ptr; |
a32a8923 | 6639 | bfd *abfd = get_section_bfd_owner (section); |
be391dca | 6640 | |
b4f54984 | 6641 | if (dwarf_read_debug) |
bf6af496 | 6642 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
6643 | get_section_name (section), |
6644 | get_section_file_name (section)); | |
bf6af496 | 6645 | |
36586728 | 6646 | dwarf2_read_section (objfile, section); |
ae038cb0 | 6647 | |
36586728 | 6648 | info_ptr = section->buffer; |
6e70227d | 6649 | |
36586728 | 6650 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 6651 | { |
c764a876 | 6652 | unsigned int length, initial_length_size; |
ae038cb0 | 6653 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 6654 | sect_offset offset; |
ae038cb0 | 6655 | |
36586728 | 6656 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
6657 | |
6658 | /* Read just enough information to find out where the next | |
6659 | compilation unit is. */ | |
36586728 | 6660 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
6661 | |
6662 | /* Save the compilation unit for later lookup. */ | |
8d749320 | 6663 | this_cu = XOBNEW (&objfile->objfile_obstack, struct dwarf2_per_cu_data); |
ae038cb0 DJ |
6664 | memset (this_cu, 0, sizeof (*this_cu)); |
6665 | this_cu->offset = offset; | |
c764a876 | 6666 | this_cu->length = length + initial_length_size; |
36586728 | 6667 | this_cu->is_dwz = is_dwz; |
9291a0cd | 6668 | this_cu->objfile = objfile; |
8a0459fd | 6669 | this_cu->section = section; |
ae038cb0 | 6670 | |
36586728 | 6671 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 6672 | { |
36586728 | 6673 | *n_allocated *= 2; |
224c3ddb SM |
6674 | *all_comp_units = XRESIZEVEC (struct dwarf2_per_cu_data *, |
6675 | *all_comp_units, *n_allocated); | |
ae038cb0 | 6676 | } |
36586728 TT |
6677 | (*all_comp_units)[*n_comp_units] = this_cu; |
6678 | ++*n_comp_units; | |
ae038cb0 DJ |
6679 | |
6680 | info_ptr = info_ptr + this_cu->length; | |
6681 | } | |
36586728 TT |
6682 | } |
6683 | ||
6684 | /* Create a list of all compilation units in OBJFILE. | |
6685 | This is only done for -readnow and building partial symtabs. */ | |
6686 | ||
6687 | static void | |
6688 | create_all_comp_units (struct objfile *objfile) | |
6689 | { | |
6690 | int n_allocated; | |
6691 | int n_comp_units; | |
6692 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 6693 | struct dwz_file *dwz; |
36586728 TT |
6694 | |
6695 | n_comp_units = 0; | |
6696 | n_allocated = 10; | |
8d749320 | 6697 | all_comp_units = XNEWVEC (struct dwarf2_per_cu_data *, n_allocated); |
36586728 TT |
6698 | |
6699 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
6700 | &n_allocated, &n_comp_units, &all_comp_units); | |
6701 | ||
4db1a1dc TT |
6702 | dwz = dwarf2_get_dwz_file (); |
6703 | if (dwz != NULL) | |
6704 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
6705 | &n_allocated, &n_comp_units, | |
6706 | &all_comp_units); | |
ae038cb0 | 6707 | |
8d749320 SM |
6708 | dwarf2_per_objfile->all_comp_units = XOBNEWVEC (&objfile->objfile_obstack, |
6709 | struct dwarf2_per_cu_data *, | |
6710 | n_comp_units); | |
ae038cb0 DJ |
6711 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, |
6712 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6713 | xfree (all_comp_units); | |
6714 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
6715 | } |
6716 | ||
5734ee8b | 6717 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 6718 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 6719 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
6720 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
6721 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 6722 | |
72bf9492 DJ |
6723 | static void |
6724 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
6725 | CORE_ADDR *highpc, int set_addrmap, |
6726 | struct dwarf2_cu *cu) | |
c906108c | 6727 | { |
72bf9492 | 6728 | struct partial_die_info *pdi; |
c906108c | 6729 | |
91c24f0a DC |
6730 | /* Now, march along the PDI's, descending into ones which have |
6731 | interesting children but skipping the children of the other ones, | |
6732 | until we reach the end of the compilation unit. */ | |
c906108c | 6733 | |
72bf9492 | 6734 | pdi = first_die; |
91c24f0a | 6735 | |
72bf9492 DJ |
6736 | while (pdi != NULL) |
6737 | { | |
6738 | fixup_partial_die (pdi, cu); | |
c906108c | 6739 | |
f55ee35c | 6740 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
6741 | children, so we need to look at them. Ditto for anonymous |
6742 | enums. */ | |
933c6fe4 | 6743 | |
72bf9492 | 6744 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
6745 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
6746 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 6747 | { |
72bf9492 | 6748 | switch (pdi->tag) |
c906108c SS |
6749 | { |
6750 | case DW_TAG_subprogram: | |
cdc07690 | 6751 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 6752 | break; |
72929c62 | 6753 | case DW_TAG_constant: |
c906108c SS |
6754 | case DW_TAG_variable: |
6755 | case DW_TAG_typedef: | |
91c24f0a | 6756 | case DW_TAG_union_type: |
72bf9492 | 6757 | if (!pdi->is_declaration) |
63d06c5c | 6758 | { |
72bf9492 | 6759 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
6760 | } |
6761 | break; | |
c906108c | 6762 | case DW_TAG_class_type: |
680b30c7 | 6763 | case DW_TAG_interface_type: |
c906108c | 6764 | case DW_TAG_structure_type: |
72bf9492 | 6765 | if (!pdi->is_declaration) |
c906108c | 6766 | { |
72bf9492 | 6767 | add_partial_symbol (pdi, cu); |
c906108c | 6768 | } |
e98c9e7c TT |
6769 | if (cu->language == language_rust && pdi->has_children) |
6770 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
6771 | set_addrmap, cu); | |
c906108c | 6772 | break; |
91c24f0a | 6773 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
6774 | if (!pdi->is_declaration) |
6775 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
6776 | break; |
6777 | case DW_TAG_base_type: | |
a02abb62 | 6778 | case DW_TAG_subrange_type: |
c906108c | 6779 | /* File scope base type definitions are added to the partial |
c5aa993b | 6780 | symbol table. */ |
72bf9492 | 6781 | add_partial_symbol (pdi, cu); |
c906108c | 6782 | break; |
d9fa45fe | 6783 | case DW_TAG_namespace: |
cdc07690 | 6784 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 6785 | break; |
5d7cb8df | 6786 | case DW_TAG_module: |
cdc07690 | 6787 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 6788 | break; |
95554aad TT |
6789 | case DW_TAG_imported_unit: |
6790 | { | |
6791 | struct dwarf2_per_cu_data *per_cu; | |
6792 | ||
f4dc4d17 DE |
6793 | /* For now we don't handle imported units in type units. */ |
6794 | if (cu->per_cu->is_debug_types) | |
6795 | { | |
6796 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6797 | " supported in type units [in module %s]"), | |
4262abfb | 6798 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
6799 | } |
6800 | ||
95554aad | 6801 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 6802 | pdi->is_dwz, |
95554aad TT |
6803 | cu->objfile); |
6804 | ||
6805 | /* Go read the partial unit, if needed. */ | |
6806 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 6807 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 6808 | |
f4dc4d17 | 6809 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 6810 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
6811 | } |
6812 | break; | |
74921315 KS |
6813 | case DW_TAG_imported_declaration: |
6814 | add_partial_symbol (pdi, cu); | |
6815 | break; | |
c906108c SS |
6816 | default: |
6817 | break; | |
6818 | } | |
6819 | } | |
6820 | ||
72bf9492 DJ |
6821 | /* If the die has a sibling, skip to the sibling. */ |
6822 | ||
6823 | pdi = pdi->die_sibling; | |
6824 | } | |
6825 | } | |
6826 | ||
6827 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 6828 | |
72bf9492 | 6829 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 6830 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
6831 | Enumerators are an exception; they use the scope of their parent |
6832 | enumeration type, i.e. the name of the enumeration type is not | |
6833 | prepended to the enumerator. | |
91c24f0a | 6834 | |
72bf9492 DJ |
6835 | There are two complexities. One is DW_AT_specification; in this |
6836 | case "parent" means the parent of the target of the specification, | |
6837 | instead of the direct parent of the DIE. The other is compilers | |
6838 | which do not emit DW_TAG_namespace; in this case we try to guess | |
6839 | the fully qualified name of structure types from their members' | |
6840 | linkage names. This must be done using the DIE's children rather | |
6841 | than the children of any DW_AT_specification target. We only need | |
6842 | to do this for structures at the top level, i.e. if the target of | |
6843 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
6844 | have a parent. */ | |
6845 | ||
6846 | /* Compute the scope prefix associated with PDI's parent, in | |
6847 | compilation unit CU. The result will be allocated on CU's | |
6848 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
6849 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 6850 | static const char * |
72bf9492 DJ |
6851 | partial_die_parent_scope (struct partial_die_info *pdi, |
6852 | struct dwarf2_cu *cu) | |
6853 | { | |
15d034d0 | 6854 | const char *grandparent_scope; |
72bf9492 | 6855 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 6856 | |
72bf9492 DJ |
6857 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
6858 | then this means the parent of the specification DIE. */ | |
6859 | ||
6860 | real_pdi = pdi; | |
72bf9492 | 6861 | while (real_pdi->has_specification) |
36586728 TT |
6862 | real_pdi = find_partial_die (real_pdi->spec_offset, |
6863 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
6864 | |
6865 | parent = real_pdi->die_parent; | |
6866 | if (parent == NULL) | |
6867 | return NULL; | |
6868 | ||
6869 | if (parent->scope_set) | |
6870 | return parent->scope; | |
6871 | ||
6872 | fixup_partial_die (parent, cu); | |
6873 | ||
10b3939b | 6874 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 6875 | |
acebe513 UW |
6876 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
6877 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
6878 | Work around this problem here. */ | |
6879 | if (cu->language == language_cplus | |
6e70227d | 6880 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
6881 | && strcmp (parent->name, "::") == 0 |
6882 | && grandparent_scope == NULL) | |
6883 | { | |
6884 | parent->scope = NULL; | |
6885 | parent->scope_set = 1; | |
6886 | return NULL; | |
6887 | } | |
6888 | ||
9c6c53f7 SA |
6889 | if (pdi->tag == DW_TAG_enumerator) |
6890 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
6891 | parent->scope = grandparent_scope; | |
6892 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 6893 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
6894 | || parent->tag == DW_TAG_structure_type |
6895 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 6896 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
6897 | || parent->tag == DW_TAG_union_type |
6898 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
6899 | { |
6900 | if (grandparent_scope == NULL) | |
6901 | parent->scope = parent->name; | |
6902 | else | |
3e43a32a MS |
6903 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
6904 | grandparent_scope, | |
f55ee35c | 6905 | parent->name, 0, cu); |
72bf9492 | 6906 | } |
72bf9492 DJ |
6907 | else |
6908 | { | |
6909 | /* FIXME drow/2004-04-01: What should we be doing with | |
6910 | function-local names? For partial symbols, we should probably be | |
6911 | ignoring them. */ | |
6912 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6913 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 6914 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 6915 | parent->scope = grandparent_scope; |
c906108c SS |
6916 | } |
6917 | ||
72bf9492 DJ |
6918 | parent->scope_set = 1; |
6919 | return parent->scope; | |
6920 | } | |
6921 | ||
6922 | /* Return the fully scoped name associated with PDI, from compilation unit | |
6923 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 6924 | |
72bf9492 DJ |
6925 | static char * |
6926 | partial_die_full_name (struct partial_die_info *pdi, | |
6927 | struct dwarf2_cu *cu) | |
6928 | { | |
15d034d0 | 6929 | const char *parent_scope; |
72bf9492 | 6930 | |
98bfdba5 PA |
6931 | /* If this is a template instantiation, we can not work out the |
6932 | template arguments from partial DIEs. So, unfortunately, we have | |
6933 | to go through the full DIEs. At least any work we do building | |
6934 | types here will be reused if full symbols are loaded later. */ | |
6935 | if (pdi->has_template_arguments) | |
6936 | { | |
6937 | fixup_partial_die (pdi, cu); | |
6938 | ||
6939 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
6940 | { | |
6941 | struct die_info *die; | |
6942 | struct attribute attr; | |
6943 | struct dwarf2_cu *ref_cu = cu; | |
6944 | ||
b64f50a1 | 6945 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 6946 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 6947 | attr.form = DW_FORM_ref_addr; |
4568ecf9 | 6948 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
6949 | die = follow_die_ref (NULL, &attr, &ref_cu); |
6950 | ||
6951 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
6952 | } | |
6953 | } | |
6954 | ||
72bf9492 DJ |
6955 | parent_scope = partial_die_parent_scope (pdi, cu); |
6956 | if (parent_scope == NULL) | |
6957 | return NULL; | |
6958 | else | |
f55ee35c | 6959 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
6960 | } |
6961 | ||
6962 | static void | |
72bf9492 | 6963 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 6964 | { |
e7c27a73 | 6965 | struct objfile *objfile = cu->objfile; |
3e29f34a | 6966 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 6967 | CORE_ADDR addr = 0; |
15d034d0 | 6968 | const char *actual_name = NULL; |
e142c38c | 6969 | CORE_ADDR baseaddr; |
15d034d0 | 6970 | char *built_actual_name; |
e142c38c DJ |
6971 | |
6972 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6973 | |
15d034d0 TT |
6974 | built_actual_name = partial_die_full_name (pdi, cu); |
6975 | if (built_actual_name != NULL) | |
6976 | actual_name = built_actual_name; | |
63d06c5c | 6977 | |
72bf9492 DJ |
6978 | if (actual_name == NULL) |
6979 | actual_name = pdi->name; | |
6980 | ||
c906108c SS |
6981 | switch (pdi->tag) |
6982 | { | |
6983 | case DW_TAG_subprogram: | |
3e29f34a | 6984 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 6985 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 6986 | { |
2cfa0c8d JB |
6987 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
6988 | of the global scope. But in Ada, we want to be able to access | |
6989 | nested procedures globally. So all Ada subprograms are stored | |
6990 | in the global scope. */ | |
f47fb265 | 6991 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6992 | built_actual_name != NULL, |
f47fb265 MS |
6993 | VAR_DOMAIN, LOC_BLOCK, |
6994 | &objfile->global_psymbols, | |
1762568f | 6995 | addr, cu->language, objfile); |
c906108c SS |
6996 | } |
6997 | else | |
6998 | { | |
f47fb265 | 6999 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7000 | built_actual_name != NULL, |
f47fb265 MS |
7001 | VAR_DOMAIN, LOC_BLOCK, |
7002 | &objfile->static_psymbols, | |
1762568f | 7003 | addr, cu->language, objfile); |
c906108c | 7004 | } |
0c1b455e TT |
7005 | |
7006 | if (pdi->main_subprogram && actual_name != NULL) | |
7007 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 7008 | break; |
72929c62 JB |
7009 | case DW_TAG_constant: |
7010 | { | |
7011 | struct psymbol_allocation_list *list; | |
7012 | ||
7013 | if (pdi->is_external) | |
7014 | list = &objfile->global_psymbols; | |
7015 | else | |
7016 | list = &objfile->static_psymbols; | |
f47fb265 | 7017 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7018 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
1762568f | 7019 | list, 0, cu->language, objfile); |
72929c62 JB |
7020 | } |
7021 | break; | |
c906108c | 7022 | case DW_TAG_variable: |
95554aad TT |
7023 | if (pdi->d.locdesc) |
7024 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 7025 | |
95554aad | 7026 | if (pdi->d.locdesc |
caac4577 JG |
7027 | && addr == 0 |
7028 | && !dwarf2_per_objfile->has_section_at_zero) | |
7029 | { | |
7030 | /* A global or static variable may also have been stripped | |
7031 | out by the linker if unused, in which case its address | |
7032 | will be nullified; do not add such variables into partial | |
7033 | symbol table then. */ | |
7034 | } | |
7035 | else if (pdi->is_external) | |
c906108c SS |
7036 | { |
7037 | /* Global Variable. | |
7038 | Don't enter into the minimal symbol tables as there is | |
7039 | a minimal symbol table entry from the ELF symbols already. | |
7040 | Enter into partial symbol table if it has a location | |
7041 | descriptor or a type. | |
7042 | If the location descriptor is missing, new_symbol will create | |
7043 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
7044 | be determined from the minimal symbol table whenever the variable | |
7045 | is referenced. | |
7046 | The address for the partial symbol table entry is not | |
7047 | used by GDB, but it comes in handy for debugging partial symbol | |
7048 | table building. */ | |
7049 | ||
95554aad | 7050 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 7051 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7052 | built_actual_name != NULL, |
f47fb265 MS |
7053 | VAR_DOMAIN, LOC_STATIC, |
7054 | &objfile->global_psymbols, | |
1762568f | 7055 | addr + baseaddr, |
f47fb265 | 7056 | cu->language, objfile); |
c906108c SS |
7057 | } |
7058 | else | |
7059 | { | |
ff908ebf AW |
7060 | int has_loc = pdi->d.locdesc != NULL; |
7061 | ||
7062 | /* Static Variable. Skip symbols whose value we cannot know (those | |
7063 | without location descriptors or constant values). */ | |
7064 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 7065 | { |
15d034d0 | 7066 | xfree (built_actual_name); |
decbce07 MS |
7067 | return; |
7068 | } | |
ff908ebf | 7069 | |
f47fb265 | 7070 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7071 | built_actual_name != NULL, |
f47fb265 MS |
7072 | VAR_DOMAIN, LOC_STATIC, |
7073 | &objfile->static_psymbols, | |
ff908ebf | 7074 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, |
f47fb265 | 7075 | cu->language, objfile); |
c906108c SS |
7076 | } |
7077 | break; | |
7078 | case DW_TAG_typedef: | |
7079 | case DW_TAG_base_type: | |
a02abb62 | 7080 | case DW_TAG_subrange_type: |
38d518c9 | 7081 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7082 | built_actual_name != NULL, |
176620f1 | 7083 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 7084 | &objfile->static_psymbols, |
1762568f | 7085 | 0, cu->language, objfile); |
c906108c | 7086 | break; |
74921315 | 7087 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
7088 | case DW_TAG_namespace: |
7089 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 7090 | built_actual_name != NULL, |
72bf9492 DJ |
7091 | VAR_DOMAIN, LOC_TYPEDEF, |
7092 | &objfile->global_psymbols, | |
1762568f | 7093 | 0, cu->language, objfile); |
72bf9492 | 7094 | break; |
530e8392 KB |
7095 | case DW_TAG_module: |
7096 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
7097 | built_actual_name != NULL, | |
7098 | MODULE_DOMAIN, LOC_TYPEDEF, | |
7099 | &objfile->global_psymbols, | |
1762568f | 7100 | 0, cu->language, objfile); |
530e8392 | 7101 | break; |
c906108c | 7102 | case DW_TAG_class_type: |
680b30c7 | 7103 | case DW_TAG_interface_type: |
c906108c SS |
7104 | case DW_TAG_structure_type: |
7105 | case DW_TAG_union_type: | |
7106 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
7107 | /* Skip external references. The DWARF standard says in the section |
7108 | about "Structure, Union, and Class Type Entries": "An incomplete | |
7109 | structure, union or class type is represented by a structure, | |
7110 | union or class entry that does not have a byte size attribute | |
7111 | and that has a DW_AT_declaration attribute." */ | |
7112 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 7113 | { |
15d034d0 | 7114 | xfree (built_actual_name); |
decbce07 MS |
7115 | return; |
7116 | } | |
fa4028e9 | 7117 | |
63d06c5c DC |
7118 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
7119 | static vs. global. */ | |
38d518c9 | 7120 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7121 | built_actual_name != NULL, |
176620f1 | 7122 | STRUCT_DOMAIN, LOC_TYPEDEF, |
9c37b5ae | 7123 | cu->language == language_cplus |
63d06c5c DC |
7124 | ? &objfile->global_psymbols |
7125 | : &objfile->static_psymbols, | |
1762568f | 7126 | 0, cu->language, objfile); |
c906108c | 7127 | |
c906108c SS |
7128 | break; |
7129 | case DW_TAG_enumerator: | |
38d518c9 | 7130 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7131 | built_actual_name != NULL, |
176620f1 | 7132 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 7133 | cu->language == language_cplus |
f6fe98ef DJ |
7134 | ? &objfile->global_psymbols |
7135 | : &objfile->static_psymbols, | |
1762568f | 7136 | 0, cu->language, objfile); |
c906108c SS |
7137 | break; |
7138 | default: | |
7139 | break; | |
7140 | } | |
5c4e30ca | 7141 | |
15d034d0 | 7142 | xfree (built_actual_name); |
c906108c SS |
7143 | } |
7144 | ||
5c4e30ca DC |
7145 | /* Read a partial die corresponding to a namespace; also, add a symbol |
7146 | corresponding to that namespace to the symbol table. NAMESPACE is | |
7147 | the name of the enclosing namespace. */ | |
91c24f0a | 7148 | |
72bf9492 DJ |
7149 | static void |
7150 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 7151 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 7152 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 7153 | { |
72bf9492 | 7154 | /* Add a symbol for the namespace. */ |
e7c27a73 | 7155 | |
72bf9492 | 7156 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
7157 | |
7158 | /* Now scan partial symbols in that namespace. */ | |
7159 | ||
91c24f0a | 7160 | if (pdi->has_children) |
cdc07690 | 7161 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
7162 | } |
7163 | ||
5d7cb8df JK |
7164 | /* Read a partial die corresponding to a Fortran module. */ |
7165 | ||
7166 | static void | |
7167 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 7168 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 7169 | { |
530e8392 KB |
7170 | /* Add a symbol for the namespace. */ |
7171 | ||
7172 | add_partial_symbol (pdi, cu); | |
7173 | ||
f55ee35c | 7174 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
7175 | |
7176 | if (pdi->has_children) | |
cdc07690 | 7177 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
7178 | } |
7179 | ||
bc30ff58 JB |
7180 | /* Read a partial die corresponding to a subprogram and create a partial |
7181 | symbol for that subprogram. When the CU language allows it, this | |
7182 | routine also defines a partial symbol for each nested subprogram | |
cdc07690 | 7183 | that this subprogram contains. If SET_ADDRMAP is true, record the |
428fc5fc YQ |
7184 | covered ranges in the addrmap. Set *LOWPC and *HIGHPC to the lowest |
7185 | and highest PC values found in PDI. | |
6e70227d | 7186 | |
cdc07690 YQ |
7187 | PDI may also be a lexical block, in which case we simply search |
7188 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
7189 | Again, this is only performed when the CU language allows this |
7190 | type of definitions. */ | |
7191 | ||
7192 | static void | |
7193 | add_partial_subprogram (struct partial_die_info *pdi, | |
7194 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 7195 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 JB |
7196 | { |
7197 | if (pdi->tag == DW_TAG_subprogram) | |
7198 | { | |
7199 | if (pdi->has_pc_info) | |
7200 | { | |
7201 | if (pdi->lowpc < *lowpc) | |
7202 | *lowpc = pdi->lowpc; | |
7203 | if (pdi->highpc > *highpc) | |
7204 | *highpc = pdi->highpc; | |
cdc07690 | 7205 | if (set_addrmap) |
5734ee8b | 7206 | { |
5734ee8b | 7207 | struct objfile *objfile = cu->objfile; |
3e29f34a MR |
7208 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
7209 | CORE_ADDR baseaddr; | |
7210 | CORE_ADDR highpc; | |
7211 | CORE_ADDR lowpc; | |
5734ee8b DJ |
7212 | |
7213 | baseaddr = ANOFFSET (objfile->section_offsets, | |
7214 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
7215 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
7216 | pdi->lowpc + baseaddr); | |
7217 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
7218 | pdi->highpc + baseaddr); | |
7219 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 7220 | cu->per_cu->v.psymtab); |
5734ee8b | 7221 | } |
481860b3 GB |
7222 | } |
7223 | ||
7224 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
7225 | { | |
bc30ff58 | 7226 | if (!pdi->is_declaration) |
e8d05480 JB |
7227 | /* Ignore subprogram DIEs that do not have a name, they are |
7228 | illegal. Do not emit a complaint at this point, we will | |
7229 | do so when we convert this psymtab into a symtab. */ | |
7230 | if (pdi->name) | |
7231 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
7232 | } |
7233 | } | |
6e70227d | 7234 | |
bc30ff58 JB |
7235 | if (! pdi->has_children) |
7236 | return; | |
7237 | ||
7238 | if (cu->language == language_ada) | |
7239 | { | |
7240 | pdi = pdi->die_child; | |
7241 | while (pdi != NULL) | |
7242 | { | |
7243 | fixup_partial_die (pdi, cu); | |
7244 | if (pdi->tag == DW_TAG_subprogram | |
7245 | || pdi->tag == DW_TAG_lexical_block) | |
cdc07690 | 7246 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
7247 | pdi = pdi->die_sibling; |
7248 | } | |
7249 | } | |
7250 | } | |
7251 | ||
91c24f0a DC |
7252 | /* Read a partial die corresponding to an enumeration type. */ |
7253 | ||
72bf9492 DJ |
7254 | static void |
7255 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
7256 | struct dwarf2_cu *cu) | |
91c24f0a | 7257 | { |
72bf9492 | 7258 | struct partial_die_info *pdi; |
91c24f0a DC |
7259 | |
7260 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
7261 | add_partial_symbol (enum_pdi, cu); |
7262 | ||
7263 | pdi = enum_pdi->die_child; | |
7264 | while (pdi) | |
91c24f0a | 7265 | { |
72bf9492 | 7266 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 7267 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 7268 | else |
72bf9492 DJ |
7269 | add_partial_symbol (pdi, cu); |
7270 | pdi = pdi->die_sibling; | |
91c24f0a | 7271 | } |
91c24f0a DC |
7272 | } |
7273 | ||
6caca83c CC |
7274 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
7275 | ||
7276 | static unsigned int | |
d521ce57 | 7277 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
7278 | { |
7279 | unsigned int bytes_read; | |
7280 | ||
7281 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7282 | } | |
7283 | ||
4bb7a0a7 DJ |
7284 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
7285 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
7286 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
7287 | the initial number. */ | |
7288 | ||
7289 | static struct abbrev_info * | |
d521ce57 | 7290 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 7291 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
7292 | { |
7293 | bfd *abfd = cu->objfile->obfd; | |
7294 | unsigned int abbrev_number; | |
7295 | struct abbrev_info *abbrev; | |
7296 | ||
7297 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
7298 | ||
7299 | if (abbrev_number == 0) | |
7300 | return NULL; | |
7301 | ||
433df2d4 | 7302 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
7303 | if (!abbrev) |
7304 | { | |
422b9917 DE |
7305 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
7306 | " at offset 0x%x [in module %s]"), | |
7307 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", | |
7308 | cu->header.offset.sect_off, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
7309 | } |
7310 | ||
7311 | return abbrev; | |
7312 | } | |
7313 | ||
93311388 DE |
7314 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7315 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
7316 | DIE. Any children of the skipped DIEs will also be skipped. */ |
7317 | ||
d521ce57 TT |
7318 | static const gdb_byte * |
7319 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 7320 | { |
dee91e82 | 7321 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
7322 | struct abbrev_info *abbrev; |
7323 | unsigned int bytes_read; | |
7324 | ||
7325 | while (1) | |
7326 | { | |
7327 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
7328 | if (abbrev == NULL) | |
7329 | return info_ptr + bytes_read; | |
7330 | else | |
dee91e82 | 7331 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
7332 | } |
7333 | } | |
7334 | ||
93311388 DE |
7335 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7336 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
7337 | abbrev corresponding to that skipped uleb128 should be passed in |
7338 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
7339 | children. */ | |
7340 | ||
d521ce57 TT |
7341 | static const gdb_byte * |
7342 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 7343 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
7344 | { |
7345 | unsigned int bytes_read; | |
7346 | struct attribute attr; | |
dee91e82 DE |
7347 | bfd *abfd = reader->abfd; |
7348 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 7349 | const gdb_byte *buffer = reader->buffer; |
f664829e | 7350 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
7351 | unsigned int form, i; |
7352 | ||
7353 | for (i = 0; i < abbrev->num_attrs; i++) | |
7354 | { | |
7355 | /* The only abbrev we care about is DW_AT_sibling. */ | |
7356 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
7357 | { | |
dee91e82 | 7358 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 7359 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
7360 | complaint (&symfile_complaints, |
7361 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 7362 | else |
b9502d3f WN |
7363 | { |
7364 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
7365 | const gdb_byte *sibling_ptr = buffer + off; | |
7366 | ||
7367 | if (sibling_ptr < info_ptr) | |
7368 | complaint (&symfile_complaints, | |
7369 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
7370 | else if (sibling_ptr > reader->buffer_end) |
7371 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
7372 | else |
7373 | return sibling_ptr; | |
7374 | } | |
4bb7a0a7 DJ |
7375 | } |
7376 | ||
7377 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
7378 | form = abbrev->attrs[i].form; | |
7379 | skip_attribute: | |
7380 | switch (form) | |
7381 | { | |
4bb7a0a7 | 7382 | case DW_FORM_ref_addr: |
ae411497 TT |
7383 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
7384 | and later it is offset sized. */ | |
7385 | if (cu->header.version == 2) | |
7386 | info_ptr += cu->header.addr_size; | |
7387 | else | |
7388 | info_ptr += cu->header.offset_size; | |
7389 | break; | |
36586728 TT |
7390 | case DW_FORM_GNU_ref_alt: |
7391 | info_ptr += cu->header.offset_size; | |
7392 | break; | |
ae411497 | 7393 | case DW_FORM_addr: |
4bb7a0a7 DJ |
7394 | info_ptr += cu->header.addr_size; |
7395 | break; | |
7396 | case DW_FORM_data1: | |
7397 | case DW_FORM_ref1: | |
7398 | case DW_FORM_flag: | |
7399 | info_ptr += 1; | |
7400 | break; | |
2dc7f7b3 | 7401 | case DW_FORM_flag_present: |
43988095 | 7402 | case DW_FORM_implicit_const: |
2dc7f7b3 | 7403 | break; |
4bb7a0a7 DJ |
7404 | case DW_FORM_data2: |
7405 | case DW_FORM_ref2: | |
7406 | info_ptr += 2; | |
7407 | break; | |
7408 | case DW_FORM_data4: | |
7409 | case DW_FORM_ref4: | |
7410 | info_ptr += 4; | |
7411 | break; | |
7412 | case DW_FORM_data8: | |
7413 | case DW_FORM_ref8: | |
55f1336d | 7414 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
7415 | info_ptr += 8; |
7416 | break; | |
7417 | case DW_FORM_string: | |
9b1c24c8 | 7418 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
7419 | info_ptr += bytes_read; |
7420 | break; | |
2dc7f7b3 | 7421 | case DW_FORM_sec_offset: |
4bb7a0a7 | 7422 | case DW_FORM_strp: |
36586728 | 7423 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
7424 | info_ptr += cu->header.offset_size; |
7425 | break; | |
2dc7f7b3 | 7426 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
7427 | case DW_FORM_block: |
7428 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7429 | info_ptr += bytes_read; | |
7430 | break; | |
7431 | case DW_FORM_block1: | |
7432 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
7433 | break; | |
7434 | case DW_FORM_block2: | |
7435 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
7436 | break; | |
7437 | case DW_FORM_block4: | |
7438 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
7439 | break; | |
7440 | case DW_FORM_sdata: | |
7441 | case DW_FORM_udata: | |
7442 | case DW_FORM_ref_udata: | |
3019eac3 DE |
7443 | case DW_FORM_GNU_addr_index: |
7444 | case DW_FORM_GNU_str_index: | |
d521ce57 | 7445 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
7446 | break; |
7447 | case DW_FORM_indirect: | |
7448 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7449 | info_ptr += bytes_read; | |
7450 | /* We need to continue parsing from here, so just go back to | |
7451 | the top. */ | |
7452 | goto skip_attribute; | |
7453 | ||
7454 | default: | |
3e43a32a MS |
7455 | error (_("Dwarf Error: Cannot handle %s " |
7456 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
7457 | dwarf_form_name (form), |
7458 | bfd_get_filename (abfd)); | |
7459 | } | |
7460 | } | |
7461 | ||
7462 | if (abbrev->has_children) | |
dee91e82 | 7463 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
7464 | else |
7465 | return info_ptr; | |
7466 | } | |
7467 | ||
93311388 | 7468 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 7469 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 7470 | |
d521ce57 | 7471 | static const gdb_byte * |
dee91e82 DE |
7472 | locate_pdi_sibling (const struct die_reader_specs *reader, |
7473 | struct partial_die_info *orig_pdi, | |
d521ce57 | 7474 | const gdb_byte *info_ptr) |
91c24f0a DC |
7475 | { |
7476 | /* Do we know the sibling already? */ | |
72bf9492 | 7477 | |
91c24f0a DC |
7478 | if (orig_pdi->sibling) |
7479 | return orig_pdi->sibling; | |
7480 | ||
7481 | /* Are there any children to deal with? */ | |
7482 | ||
7483 | if (!orig_pdi->has_children) | |
7484 | return info_ptr; | |
7485 | ||
4bb7a0a7 | 7486 | /* Skip the children the long way. */ |
91c24f0a | 7487 | |
dee91e82 | 7488 | return skip_children (reader, info_ptr); |
91c24f0a DC |
7489 | } |
7490 | ||
257e7a09 | 7491 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 7492 | not NULL. */ |
c906108c SS |
7493 | |
7494 | static void | |
257e7a09 YQ |
7495 | dwarf2_read_symtab (struct partial_symtab *self, |
7496 | struct objfile *objfile) | |
c906108c | 7497 | { |
257e7a09 | 7498 | if (self->readin) |
c906108c | 7499 | { |
442e4d9c | 7500 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 7501 | self->filename); |
442e4d9c YQ |
7502 | } |
7503 | else | |
7504 | { | |
7505 | if (info_verbose) | |
c906108c | 7506 | { |
442e4d9c | 7507 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 7508 | self->filename); |
442e4d9c | 7509 | gdb_flush (gdb_stdout); |
c906108c | 7510 | } |
c906108c | 7511 | |
442e4d9c | 7512 | /* Restore our global data. */ |
9a3c8263 SM |
7513 | dwarf2_per_objfile |
7514 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
7515 | dwarf2_objfile_data_key); | |
10b3939b | 7516 | |
442e4d9c YQ |
7517 | /* If this psymtab is constructed from a debug-only objfile, the |
7518 | has_section_at_zero flag will not necessarily be correct. We | |
7519 | can get the correct value for this flag by looking at the data | |
7520 | associated with the (presumably stripped) associated objfile. */ | |
7521 | if (objfile->separate_debug_objfile_backlink) | |
7522 | { | |
7523 | struct dwarf2_per_objfile *dpo_backlink | |
9a3c8263 SM |
7524 | = ((struct dwarf2_per_objfile *) |
7525 | objfile_data (objfile->separate_debug_objfile_backlink, | |
7526 | dwarf2_objfile_data_key)); | |
9a619af0 | 7527 | |
442e4d9c YQ |
7528 | dwarf2_per_objfile->has_section_at_zero |
7529 | = dpo_backlink->has_section_at_zero; | |
7530 | } | |
b2ab525c | 7531 | |
442e4d9c | 7532 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 7533 | |
257e7a09 | 7534 | psymtab_to_symtab_1 (self); |
c906108c | 7535 | |
442e4d9c YQ |
7536 | /* Finish up the debug error message. */ |
7537 | if (info_verbose) | |
7538 | printf_filtered (_("done.\n")); | |
c906108c | 7539 | } |
95554aad TT |
7540 | |
7541 | process_cu_includes (); | |
c906108c | 7542 | } |
9cdd5dbd DE |
7543 | \f |
7544 | /* Reading in full CUs. */ | |
c906108c | 7545 | |
10b3939b DJ |
7546 | /* Add PER_CU to the queue. */ |
7547 | ||
7548 | static void | |
95554aad TT |
7549 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7550 | enum language pretend_language) | |
10b3939b DJ |
7551 | { |
7552 | struct dwarf2_queue_item *item; | |
7553 | ||
7554 | per_cu->queued = 1; | |
8d749320 | 7555 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 7556 | item->per_cu = per_cu; |
95554aad | 7557 | item->pretend_language = pretend_language; |
10b3939b DJ |
7558 | item->next = NULL; |
7559 | ||
7560 | if (dwarf2_queue == NULL) | |
7561 | dwarf2_queue = item; | |
7562 | else | |
7563 | dwarf2_queue_tail->next = item; | |
7564 | ||
7565 | dwarf2_queue_tail = item; | |
7566 | } | |
7567 | ||
89e63ee4 DE |
7568 | /* If PER_CU is not yet queued, add it to the queue. |
7569 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
7570 | dependency. | |
0907af0c | 7571 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
7572 | meaning either PER_CU is already queued or it is already loaded. |
7573 | ||
7574 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
7575 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
7576 | |
7577 | static int | |
89e63ee4 | 7578 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
7579 | struct dwarf2_per_cu_data *per_cu, |
7580 | enum language pretend_language) | |
7581 | { | |
7582 | /* We may arrive here during partial symbol reading, if we need full | |
7583 | DIEs to process an unusual case (e.g. template arguments). Do | |
7584 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
7585 | if (dwarf2_per_objfile->reading_partial_symbols) | |
7586 | { | |
7587 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
7588 | return 1; | |
7589 | return 0; | |
7590 | } | |
7591 | ||
7592 | /* Mark the dependence relation so that we don't flush PER_CU | |
7593 | too early. */ | |
89e63ee4 DE |
7594 | if (dependent_cu != NULL) |
7595 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
7596 | |
7597 | /* If it's already on the queue, we have nothing to do. */ | |
7598 | if (per_cu->queued) | |
7599 | return 0; | |
7600 | ||
7601 | /* If the compilation unit is already loaded, just mark it as | |
7602 | used. */ | |
7603 | if (per_cu->cu != NULL) | |
7604 | { | |
7605 | per_cu->cu->last_used = 0; | |
7606 | return 0; | |
7607 | } | |
7608 | ||
7609 | /* Add it to the queue. */ | |
7610 | queue_comp_unit (per_cu, pretend_language); | |
7611 | ||
7612 | return 1; | |
7613 | } | |
7614 | ||
10b3939b DJ |
7615 | /* Process the queue. */ |
7616 | ||
7617 | static void | |
a0f42c21 | 7618 | process_queue (void) |
10b3939b DJ |
7619 | { |
7620 | struct dwarf2_queue_item *item, *next_item; | |
7621 | ||
b4f54984 | 7622 | if (dwarf_read_debug) |
45cfd468 DE |
7623 | { |
7624 | fprintf_unfiltered (gdb_stdlog, | |
7625 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 7626 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
7627 | } |
7628 | ||
03dd20cc DJ |
7629 | /* The queue starts out with one item, but following a DIE reference |
7630 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
7631 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
7632 | { | |
cc12ce38 DE |
7633 | if ((dwarf2_per_objfile->using_index |
7634 | ? !item->per_cu->v.quick->compunit_symtab | |
7635 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
7636 | /* Skip dummy CUs. */ | |
7637 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
7638 | { |
7639 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 7640 | unsigned int debug_print_threshold; |
247f5c4f | 7641 | char buf[100]; |
f4dc4d17 | 7642 | |
247f5c4f | 7643 | if (per_cu->is_debug_types) |
f4dc4d17 | 7644 | { |
247f5c4f DE |
7645 | struct signatured_type *sig_type = |
7646 | (struct signatured_type *) per_cu; | |
7647 | ||
7648 | sprintf (buf, "TU %s at offset 0x%x", | |
73be47f5 DE |
7649 | hex_string (sig_type->signature), |
7650 | per_cu->offset.sect_off); | |
7651 | /* There can be 100s of TUs. | |
7652 | Only print them in verbose mode. */ | |
7653 | debug_print_threshold = 2; | |
f4dc4d17 | 7654 | } |
247f5c4f | 7655 | else |
73be47f5 DE |
7656 | { |
7657 | sprintf (buf, "CU at offset 0x%x", per_cu->offset.sect_off); | |
7658 | debug_print_threshold = 1; | |
7659 | } | |
247f5c4f | 7660 | |
b4f54984 | 7661 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 7662 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
7663 | |
7664 | if (per_cu->is_debug_types) | |
7665 | process_full_type_unit (per_cu, item->pretend_language); | |
7666 | else | |
7667 | process_full_comp_unit (per_cu, item->pretend_language); | |
7668 | ||
b4f54984 | 7669 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 7670 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 7671 | } |
10b3939b DJ |
7672 | |
7673 | item->per_cu->queued = 0; | |
7674 | next_item = item->next; | |
7675 | xfree (item); | |
7676 | } | |
7677 | ||
7678 | dwarf2_queue_tail = NULL; | |
45cfd468 | 7679 | |
b4f54984 | 7680 | if (dwarf_read_debug) |
45cfd468 DE |
7681 | { |
7682 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 7683 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 7684 | } |
10b3939b DJ |
7685 | } |
7686 | ||
7687 | /* Free all allocated queue entries. This function only releases anything if | |
7688 | an error was thrown; if the queue was processed then it would have been | |
7689 | freed as we went along. */ | |
7690 | ||
7691 | static void | |
7692 | dwarf2_release_queue (void *dummy) | |
7693 | { | |
7694 | struct dwarf2_queue_item *item, *last; | |
7695 | ||
7696 | item = dwarf2_queue; | |
7697 | while (item) | |
7698 | { | |
7699 | /* Anything still marked queued is likely to be in an | |
7700 | inconsistent state, so discard it. */ | |
7701 | if (item->per_cu->queued) | |
7702 | { | |
7703 | if (item->per_cu->cu != NULL) | |
dee91e82 | 7704 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
7705 | item->per_cu->queued = 0; |
7706 | } | |
7707 | ||
7708 | last = item; | |
7709 | item = item->next; | |
7710 | xfree (last); | |
7711 | } | |
7712 | ||
7713 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
7714 | } | |
7715 | ||
7716 | /* Read in full symbols for PST, and anything it depends on. */ | |
7717 | ||
c906108c | 7718 | static void |
fba45db2 | 7719 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 7720 | { |
10b3939b | 7721 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
7722 | int i; |
7723 | ||
95554aad TT |
7724 | if (pst->readin) |
7725 | return; | |
7726 | ||
aaa75496 | 7727 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
7728 | if (!pst->dependencies[i]->readin |
7729 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
7730 | { |
7731 | /* Inform about additional files that need to be read in. */ | |
7732 | if (info_verbose) | |
7733 | { | |
a3f17187 | 7734 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
7735 | fputs_filtered (" ", gdb_stdout); |
7736 | wrap_here (""); | |
7737 | fputs_filtered ("and ", gdb_stdout); | |
7738 | wrap_here (""); | |
7739 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 7740 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
7741 | gdb_flush (gdb_stdout); |
7742 | } | |
7743 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
7744 | } | |
7745 | ||
9a3c8263 | 7746 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
7747 | |
7748 | if (per_cu == NULL) | |
aaa75496 JB |
7749 | { |
7750 | /* It's an include file, no symbols to read for it. | |
7751 | Everything is in the parent symtab. */ | |
7752 | pst->readin = 1; | |
7753 | return; | |
7754 | } | |
c906108c | 7755 | |
a0f42c21 | 7756 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
7757 | } |
7758 | ||
dee91e82 DE |
7759 | /* Trivial hash function for die_info: the hash value of a DIE |
7760 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 7761 | |
dee91e82 DE |
7762 | static hashval_t |
7763 | die_hash (const void *item) | |
10b3939b | 7764 | { |
9a3c8263 | 7765 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 7766 | |
dee91e82 DE |
7767 | return die->offset.sect_off; |
7768 | } | |
63d06c5c | 7769 | |
dee91e82 DE |
7770 | /* Trivial comparison function for die_info structures: two DIEs |
7771 | are equal if they have the same offset. */ | |
98bfdba5 | 7772 | |
dee91e82 DE |
7773 | static int |
7774 | die_eq (const void *item_lhs, const void *item_rhs) | |
7775 | { | |
9a3c8263 SM |
7776 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
7777 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 7778 | |
dee91e82 DE |
7779 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
7780 | } | |
c906108c | 7781 | |
dee91e82 DE |
7782 | /* die_reader_func for load_full_comp_unit. |
7783 | This is identical to read_signatured_type_reader, | |
7784 | but is kept separate for now. */ | |
c906108c | 7785 | |
dee91e82 DE |
7786 | static void |
7787 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7788 | const gdb_byte *info_ptr, |
dee91e82 DE |
7789 | struct die_info *comp_unit_die, |
7790 | int has_children, | |
7791 | void *data) | |
7792 | { | |
7793 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 7794 | enum language *language_ptr = (enum language *) data; |
6caca83c | 7795 | |
dee91e82 DE |
7796 | gdb_assert (cu->die_hash == NULL); |
7797 | cu->die_hash = | |
7798 | htab_create_alloc_ex (cu->header.length / 12, | |
7799 | die_hash, | |
7800 | die_eq, | |
7801 | NULL, | |
7802 | &cu->comp_unit_obstack, | |
7803 | hashtab_obstack_allocate, | |
7804 | dummy_obstack_deallocate); | |
e142c38c | 7805 | |
dee91e82 DE |
7806 | if (has_children) |
7807 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
7808 | &info_ptr, comp_unit_die); | |
7809 | cu->dies = comp_unit_die; | |
7810 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
7811 | |
7812 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 7813 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 7814 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
7815 | or we won't be able to build types correctly. |
7816 | Similarly, if we do not read the producer, we can not apply | |
7817 | producer-specific interpretation. */ | |
95554aad | 7818 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 7819 | } |
10b3939b | 7820 | |
dee91e82 | 7821 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 7822 | |
dee91e82 | 7823 | static void |
95554aad TT |
7824 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
7825 | enum language pretend_language) | |
dee91e82 | 7826 | { |
3019eac3 | 7827 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 7828 | |
f4dc4d17 DE |
7829 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
7830 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
7831 | } |
7832 | ||
3da10d80 KS |
7833 | /* Add a DIE to the delayed physname list. */ |
7834 | ||
7835 | static void | |
7836 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
7837 | const char *name, struct die_info *die, | |
7838 | struct dwarf2_cu *cu) | |
7839 | { | |
7840 | struct delayed_method_info mi; | |
7841 | mi.type = type; | |
7842 | mi.fnfield_index = fnfield_index; | |
7843 | mi.index = index; | |
7844 | mi.name = name; | |
7845 | mi.die = die; | |
7846 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
7847 | } | |
7848 | ||
7849 | /* A cleanup for freeing the delayed method list. */ | |
7850 | ||
7851 | static void | |
7852 | free_delayed_list (void *ptr) | |
7853 | { | |
7854 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
7855 | if (cu->method_list != NULL) | |
7856 | { | |
7857 | VEC_free (delayed_method_info, cu->method_list); | |
7858 | cu->method_list = NULL; | |
7859 | } | |
7860 | } | |
7861 | ||
7862 | /* Compute the physnames of any methods on the CU's method list. | |
7863 | ||
7864 | The computation of method physnames is delayed in order to avoid the | |
7865 | (bad) condition that one of the method's formal parameters is of an as yet | |
7866 | incomplete type. */ | |
7867 | ||
7868 | static void | |
7869 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
7870 | { | |
7871 | int i; | |
7872 | struct delayed_method_info *mi; | |
7873 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
7874 | { | |
1d06ead6 | 7875 | const char *physname; |
3da10d80 KS |
7876 | struct fn_fieldlist *fn_flp |
7877 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 7878 | physname = dwarf2_physname (mi->name, mi->die, cu); |
005e54bb DE |
7879 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi->index) |
7880 | = physname ? physname : ""; | |
3da10d80 KS |
7881 | } |
7882 | } | |
7883 | ||
a766d390 DE |
7884 | /* Go objects should be embedded in a DW_TAG_module DIE, |
7885 | and it's not clear if/how imported objects will appear. | |
7886 | To keep Go support simple until that's worked out, | |
7887 | go back through what we've read and create something usable. | |
7888 | We could do this while processing each DIE, and feels kinda cleaner, | |
7889 | but that way is more invasive. | |
7890 | This is to, for example, allow the user to type "p var" or "b main" | |
7891 | without having to specify the package name, and allow lookups | |
7892 | of module.object to work in contexts that use the expression | |
7893 | parser. */ | |
7894 | ||
7895 | static void | |
7896 | fixup_go_packaging (struct dwarf2_cu *cu) | |
7897 | { | |
7898 | char *package_name = NULL; | |
7899 | struct pending *list; | |
7900 | int i; | |
7901 | ||
7902 | for (list = global_symbols; list != NULL; list = list->next) | |
7903 | { | |
7904 | for (i = 0; i < list->nsyms; ++i) | |
7905 | { | |
7906 | struct symbol *sym = list->symbol[i]; | |
7907 | ||
7908 | if (SYMBOL_LANGUAGE (sym) == language_go | |
7909 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
7910 | { | |
7911 | char *this_package_name = go_symbol_package_name (sym); | |
7912 | ||
7913 | if (this_package_name == NULL) | |
7914 | continue; | |
7915 | if (package_name == NULL) | |
7916 | package_name = this_package_name; | |
7917 | else | |
7918 | { | |
7919 | if (strcmp (package_name, this_package_name) != 0) | |
7920 | complaint (&symfile_complaints, | |
7921 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
7922 | (symbol_symtab (sym) != NULL |
7923 | ? symtab_to_filename_for_display | |
7924 | (symbol_symtab (sym)) | |
4262abfb | 7925 | : objfile_name (cu->objfile)), |
a766d390 DE |
7926 | this_package_name, package_name); |
7927 | xfree (this_package_name); | |
7928 | } | |
7929 | } | |
7930 | } | |
7931 | } | |
7932 | ||
7933 | if (package_name != NULL) | |
7934 | { | |
7935 | struct objfile *objfile = cu->objfile; | |
34a68019 | 7936 | const char *saved_package_name |
224c3ddb SM |
7937 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
7938 | package_name, | |
7939 | strlen (package_name)); | |
19f392bc UW |
7940 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
7941 | saved_package_name); | |
a766d390 DE |
7942 | struct symbol *sym; |
7943 | ||
7944 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7945 | ||
e623cf5d | 7946 | sym = allocate_symbol (objfile); |
f85f34ed | 7947 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
7948 | SYMBOL_SET_NAMES (sym, saved_package_name, |
7949 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
7950 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
7951 | e.g., "main" finds the "main" module and not C's main(). */ | |
7952 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 7953 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
7954 | SYMBOL_TYPE (sym) = type; |
7955 | ||
7956 | add_symbol_to_list (sym, &global_symbols); | |
7957 | ||
7958 | xfree (package_name); | |
7959 | } | |
7960 | } | |
7961 | ||
95554aad TT |
7962 | /* Return the symtab for PER_CU. This works properly regardless of |
7963 | whether we're using the index or psymtabs. */ | |
7964 | ||
43f3e411 DE |
7965 | static struct compunit_symtab * |
7966 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad TT |
7967 | { |
7968 | return (dwarf2_per_objfile->using_index | |
43f3e411 DE |
7969 | ? per_cu->v.quick->compunit_symtab |
7970 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
7971 | } |
7972 | ||
7973 | /* A helper function for computing the list of all symbol tables | |
7974 | included by PER_CU. */ | |
7975 | ||
7976 | static void | |
43f3e411 | 7977 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 7978 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 7979 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 7980 | struct compunit_symtab *immediate_parent) |
95554aad TT |
7981 | { |
7982 | void **slot; | |
7983 | int ix; | |
43f3e411 | 7984 | struct compunit_symtab *cust; |
95554aad TT |
7985 | struct dwarf2_per_cu_data *iter; |
7986 | ||
7987 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
7988 | if (*slot != NULL) | |
7989 | { | |
7990 | /* This inclusion and its children have been processed. */ | |
7991 | return; | |
7992 | } | |
7993 | ||
7994 | *slot = per_cu; | |
7995 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
7996 | cust = get_compunit_symtab (per_cu); |
7997 | if (cust != NULL) | |
ec94af83 DE |
7998 | { |
7999 | /* If this is a type unit only add its symbol table if we haven't | |
8000 | seen it yet (type unit per_cu's can share symtabs). */ | |
8001 | if (per_cu->is_debug_types) | |
8002 | { | |
43f3e411 | 8003 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
8004 | if (*slot == NULL) |
8005 | { | |
43f3e411 DE |
8006 | *slot = cust; |
8007 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
8008 | if (cust->user == NULL) | |
8009 | cust->user = immediate_parent; | |
ec94af83 DE |
8010 | } |
8011 | } | |
8012 | else | |
f9125b6c | 8013 | { |
43f3e411 DE |
8014 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
8015 | if (cust->user == NULL) | |
8016 | cust->user = immediate_parent; | |
f9125b6c | 8017 | } |
ec94af83 | 8018 | } |
95554aad TT |
8019 | |
8020 | for (ix = 0; | |
796a7ff8 | 8021 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 8022 | ++ix) |
ec94af83 DE |
8023 | { |
8024 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 8025 | all_type_symtabs, iter, cust); |
ec94af83 | 8026 | } |
95554aad TT |
8027 | } |
8028 | ||
43f3e411 | 8029 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
8030 | PER_CU. */ |
8031 | ||
8032 | static void | |
43f3e411 | 8033 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 8034 | { |
f4dc4d17 DE |
8035 | gdb_assert (! per_cu->is_debug_types); |
8036 | ||
796a7ff8 | 8037 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
8038 | { |
8039 | int ix, len; | |
ec94af83 | 8040 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
8041 | struct compunit_symtab *compunit_symtab_iter; |
8042 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 8043 | htab_t all_children, all_type_symtabs; |
43f3e411 | 8044 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
8045 | |
8046 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 8047 | if (cust == NULL) |
95554aad TT |
8048 | return; |
8049 | ||
8050 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
8051 | NULL, xcalloc, xfree); | |
ec94af83 DE |
8052 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
8053 | NULL, xcalloc, xfree); | |
95554aad TT |
8054 | |
8055 | for (ix = 0; | |
796a7ff8 | 8056 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 8057 | ix, per_cu_iter); |
95554aad | 8058 | ++ix) |
ec94af83 DE |
8059 | { |
8060 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 8061 | all_type_symtabs, per_cu_iter, |
43f3e411 | 8062 | cust); |
ec94af83 | 8063 | } |
95554aad | 8064 | |
ec94af83 | 8065 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
8066 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
8067 | cust->includes | |
8d749320 SM |
8068 | = XOBNEWVEC (&dwarf2_per_objfile->objfile->objfile_obstack, |
8069 | struct compunit_symtab *, len + 1); | |
95554aad | 8070 | for (ix = 0; |
43f3e411 DE |
8071 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
8072 | compunit_symtab_iter); | |
95554aad | 8073 | ++ix) |
43f3e411 DE |
8074 | cust->includes[ix] = compunit_symtab_iter; |
8075 | cust->includes[len] = NULL; | |
95554aad | 8076 | |
43f3e411 | 8077 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 8078 | htab_delete (all_children); |
ec94af83 | 8079 | htab_delete (all_type_symtabs); |
95554aad TT |
8080 | } |
8081 | } | |
8082 | ||
8083 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
8084 | read. */ | |
8085 | ||
8086 | static void | |
8087 | process_cu_includes (void) | |
8088 | { | |
8089 | int ix; | |
8090 | struct dwarf2_per_cu_data *iter; | |
8091 | ||
8092 | for (ix = 0; | |
8093 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
8094 | ix, iter); | |
8095 | ++ix) | |
f4dc4d17 DE |
8096 | { |
8097 | if (! iter->is_debug_types) | |
43f3e411 | 8098 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 8099 | } |
95554aad TT |
8100 | |
8101 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
8102 | } | |
8103 | ||
9cdd5dbd | 8104 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
8105 | already been loaded into memory. */ |
8106 | ||
8107 | static void | |
95554aad TT |
8108 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8109 | enum language pretend_language) | |
10b3939b | 8110 | { |
10b3939b | 8111 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 8112 | struct objfile *objfile = per_cu->objfile; |
3e29f34a | 8113 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 8114 | CORE_ADDR lowpc, highpc; |
43f3e411 | 8115 | struct compunit_symtab *cust; |
3da10d80 | 8116 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 8117 | CORE_ADDR baseaddr; |
4359dff1 | 8118 | struct block *static_block; |
3e29f34a | 8119 | CORE_ADDR addr; |
10b3939b DJ |
8120 | |
8121 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8122 | ||
10b3939b DJ |
8123 | buildsym_init (); |
8124 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 8125 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
8126 | |
8127 | cu->list_in_scope = &file_symbols; | |
c906108c | 8128 | |
95554aad TT |
8129 | cu->language = pretend_language; |
8130 | cu->language_defn = language_def (cu->language); | |
8131 | ||
c906108c | 8132 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 8133 | process_die (cu->dies, cu); |
c906108c | 8134 | |
a766d390 DE |
8135 | /* For now fudge the Go package. */ |
8136 | if (cu->language == language_go) | |
8137 | fixup_go_packaging (cu); | |
8138 | ||
3da10d80 KS |
8139 | /* Now that we have processed all the DIEs in the CU, all the types |
8140 | should be complete, and it should now be safe to compute all of the | |
8141 | physnames. */ | |
8142 | compute_delayed_physnames (cu); | |
8143 | do_cleanups (delayed_list_cleanup); | |
8144 | ||
fae299cd DC |
8145 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
8146 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
8147 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 8148 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 8149 | |
3e29f34a MR |
8150 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
8151 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
8152 | |
8153 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
8154 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
8155 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
8156 | addrmap to help ensure it has an accurate map of pc values belonging to | |
8157 | this comp unit. */ | |
8158 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
8159 | ||
43f3e411 DE |
8160 | cust = end_symtab_from_static_block (static_block, |
8161 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 8162 | |
43f3e411 | 8163 | if (cust != NULL) |
c906108c | 8164 | { |
df15bd07 | 8165 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 8166 | |
8be455d7 JK |
8167 | /* Set symtab language to language from DW_AT_language. If the |
8168 | compilation is from a C file generated by language preprocessors, do | |
8169 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 8170 | if (!(cu->language == language_c |
40e3ad0e | 8171 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 8172 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
8173 | |
8174 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
8175 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
8176 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
8177 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
8178 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
8179 | |
8180 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
8181 | needed, it would be wrong due to missing DW_AT_producer there. | |
8182 | ||
8183 | Still one can confuse GDB by using non-standard GCC compilation | |
8184 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
8185 | */ | |
ab260dad | 8186 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 8187 | cust->locations_valid = 1; |
e0d00bc7 JK |
8188 | |
8189 | if (gcc_4_minor >= 5) | |
43f3e411 | 8190 | cust->epilogue_unwind_valid = 1; |
96408a79 | 8191 | |
43f3e411 | 8192 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 8193 | } |
9291a0cd TT |
8194 | |
8195 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8196 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
8197 | else |
8198 | { | |
8199 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8200 | pst->compunit_symtab = cust; |
9291a0cd TT |
8201 | pst->readin = 1; |
8202 | } | |
c906108c | 8203 | |
95554aad TT |
8204 | /* Push it for inclusion processing later. */ |
8205 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
8206 | ||
c906108c | 8207 | do_cleanups (back_to); |
f4dc4d17 | 8208 | } |
45cfd468 | 8209 | |
f4dc4d17 DE |
8210 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
8211 | already been loaded into memory. */ | |
8212 | ||
8213 | static void | |
8214 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
8215 | enum language pretend_language) | |
8216 | { | |
8217 | struct dwarf2_cu *cu = per_cu->cu; | |
8218 | struct objfile *objfile = per_cu->objfile; | |
43f3e411 | 8219 | struct compunit_symtab *cust; |
f4dc4d17 | 8220 | struct cleanup *back_to, *delayed_list_cleanup; |
0186c6a7 DE |
8221 | struct signatured_type *sig_type; |
8222 | ||
8223 | gdb_assert (per_cu->is_debug_types); | |
8224 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8225 | |
8226 | buildsym_init (); | |
8227 | back_to = make_cleanup (really_free_pendings, NULL); | |
8228 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
8229 | ||
8230 | cu->list_in_scope = &file_symbols; | |
8231 | ||
8232 | cu->language = pretend_language; | |
8233 | cu->language_defn = language_def (cu->language); | |
8234 | ||
8235 | /* The symbol tables are set up in read_type_unit_scope. */ | |
8236 | process_die (cu->dies, cu); | |
8237 | ||
8238 | /* For now fudge the Go package. */ | |
8239 | if (cu->language == language_go) | |
8240 | fixup_go_packaging (cu); | |
8241 | ||
8242 | /* Now that we have processed all the DIEs in the CU, all the types | |
8243 | should be complete, and it should now be safe to compute all of the | |
8244 | physnames. */ | |
8245 | compute_delayed_physnames (cu); | |
8246 | do_cleanups (delayed_list_cleanup); | |
8247 | ||
8248 | /* TUs share symbol tables. | |
8249 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
8250 | of it with end_expandable_symtab. Otherwise, complete the addition of |
8251 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 8252 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 8253 | { |
43f3e411 DE |
8254 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
8255 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 8256 | |
43f3e411 | 8257 | if (cust != NULL) |
f4dc4d17 DE |
8258 | { |
8259 | /* Set symtab language to language from DW_AT_language. If the | |
8260 | compilation is from a C file generated by language preprocessors, | |
8261 | do not set the language if it was already deduced by | |
8262 | start_subfile. */ | |
43f3e411 DE |
8263 | if (!(cu->language == language_c |
8264 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
8265 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
8266 | } |
8267 | } | |
8268 | else | |
8269 | { | |
0ab9ce85 | 8270 | augment_type_symtab (); |
43f3e411 | 8271 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
8272 | } |
8273 | ||
8274 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8275 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
8276 | else |
8277 | { | |
8278 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8279 | pst->compunit_symtab = cust; |
f4dc4d17 | 8280 | pst->readin = 1; |
45cfd468 | 8281 | } |
f4dc4d17 DE |
8282 | |
8283 | do_cleanups (back_to); | |
c906108c SS |
8284 | } |
8285 | ||
95554aad TT |
8286 | /* Process an imported unit DIE. */ |
8287 | ||
8288 | static void | |
8289 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
8290 | { | |
8291 | struct attribute *attr; | |
8292 | ||
f4dc4d17 DE |
8293 | /* For now we don't handle imported units in type units. */ |
8294 | if (cu->per_cu->is_debug_types) | |
8295 | { | |
8296 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8297 | " supported in type units [in module %s]"), | |
4262abfb | 8298 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
8299 | } |
8300 | ||
95554aad TT |
8301 | attr = dwarf2_attr (die, DW_AT_import, cu); |
8302 | if (attr != NULL) | |
8303 | { | |
8304 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 8305 | sect_offset offset; |
36586728 | 8306 | int is_dwz; |
95554aad TT |
8307 | |
8308 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
8309 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
8310 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad | 8311 | |
69d751e3 | 8312 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
8313 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
8314 | load_full_comp_unit (per_cu, cu->language); | |
8315 | ||
796a7ff8 | 8316 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
8317 | per_cu); |
8318 | } | |
8319 | } | |
8320 | ||
adde2bff DE |
8321 | /* Reset the in_process bit of a die. */ |
8322 | ||
8323 | static void | |
8324 | reset_die_in_process (void *arg) | |
8325 | { | |
9a3c8263 | 8326 | struct die_info *die = (struct die_info *) arg; |
8c3cb9fa | 8327 | |
adde2bff DE |
8328 | die->in_process = 0; |
8329 | } | |
8330 | ||
c906108c SS |
8331 | /* Process a die and its children. */ |
8332 | ||
8333 | static void | |
e7c27a73 | 8334 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8335 | { |
adde2bff DE |
8336 | struct cleanup *in_process; |
8337 | ||
8338 | /* We should only be processing those not already in process. */ | |
8339 | gdb_assert (!die->in_process); | |
8340 | ||
8341 | die->in_process = 1; | |
8342 | in_process = make_cleanup (reset_die_in_process,die); | |
8343 | ||
c906108c SS |
8344 | switch (die->tag) |
8345 | { | |
8346 | case DW_TAG_padding: | |
8347 | break; | |
8348 | case DW_TAG_compile_unit: | |
95554aad | 8349 | case DW_TAG_partial_unit: |
e7c27a73 | 8350 | read_file_scope (die, cu); |
c906108c | 8351 | break; |
348e048f DE |
8352 | case DW_TAG_type_unit: |
8353 | read_type_unit_scope (die, cu); | |
8354 | break; | |
c906108c | 8355 | case DW_TAG_subprogram: |
c906108c | 8356 | case DW_TAG_inlined_subroutine: |
edb3359d | 8357 | read_func_scope (die, cu); |
c906108c SS |
8358 | break; |
8359 | case DW_TAG_lexical_block: | |
14898363 L |
8360 | case DW_TAG_try_block: |
8361 | case DW_TAG_catch_block: | |
e7c27a73 | 8362 | read_lexical_block_scope (die, cu); |
c906108c | 8363 | break; |
216f72a1 | 8364 | case DW_TAG_call_site: |
96408a79 SA |
8365 | case DW_TAG_GNU_call_site: |
8366 | read_call_site_scope (die, cu); | |
8367 | break; | |
c906108c | 8368 | case DW_TAG_class_type: |
680b30c7 | 8369 | case DW_TAG_interface_type: |
c906108c SS |
8370 | case DW_TAG_structure_type: |
8371 | case DW_TAG_union_type: | |
134d01f1 | 8372 | process_structure_scope (die, cu); |
c906108c SS |
8373 | break; |
8374 | case DW_TAG_enumeration_type: | |
134d01f1 | 8375 | process_enumeration_scope (die, cu); |
c906108c | 8376 | break; |
134d01f1 | 8377 | |
f792889a DJ |
8378 | /* These dies have a type, but processing them does not create |
8379 | a symbol or recurse to process the children. Therefore we can | |
8380 | read them on-demand through read_type_die. */ | |
c906108c | 8381 | case DW_TAG_subroutine_type: |
72019c9c | 8382 | case DW_TAG_set_type: |
c906108c | 8383 | case DW_TAG_array_type: |
c906108c | 8384 | case DW_TAG_pointer_type: |
c906108c | 8385 | case DW_TAG_ptr_to_member_type: |
c906108c | 8386 | case DW_TAG_reference_type: |
c906108c | 8387 | case DW_TAG_string_type: |
c906108c | 8388 | break; |
134d01f1 | 8389 | |
c906108c | 8390 | case DW_TAG_base_type: |
a02abb62 | 8391 | case DW_TAG_subrange_type: |
cb249c71 | 8392 | case DW_TAG_typedef: |
134d01f1 DJ |
8393 | /* Add a typedef symbol for the type definition, if it has a |
8394 | DW_AT_name. */ | |
f792889a | 8395 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 8396 | break; |
c906108c | 8397 | case DW_TAG_common_block: |
e7c27a73 | 8398 | read_common_block (die, cu); |
c906108c SS |
8399 | break; |
8400 | case DW_TAG_common_inclusion: | |
8401 | break; | |
d9fa45fe | 8402 | case DW_TAG_namespace: |
4d4ec4e5 | 8403 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 8404 | read_namespace (die, cu); |
d9fa45fe | 8405 | break; |
5d7cb8df | 8406 | case DW_TAG_module: |
4d4ec4e5 | 8407 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
8408 | read_module (die, cu); |
8409 | break; | |
d9fa45fe | 8410 | case DW_TAG_imported_declaration: |
74921315 KS |
8411 | cu->processing_has_namespace_info = 1; |
8412 | if (read_namespace_alias (die, cu)) | |
8413 | break; | |
8414 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 8415 | case DW_TAG_imported_module: |
4d4ec4e5 | 8416 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
8417 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
8418 | || cu->language != language_fortran)) | |
8419 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
8420 | dwarf_tag_name (die->tag)); | |
8421 | read_import_statement (die, cu); | |
d9fa45fe | 8422 | break; |
95554aad TT |
8423 | |
8424 | case DW_TAG_imported_unit: | |
8425 | process_imported_unit_die (die, cu); | |
8426 | break; | |
8427 | ||
c906108c | 8428 | default: |
e7c27a73 | 8429 | new_symbol (die, NULL, cu); |
c906108c SS |
8430 | break; |
8431 | } | |
adde2bff DE |
8432 | |
8433 | do_cleanups (in_process); | |
c906108c | 8434 | } |
ca69b9e6 DE |
8435 | \f |
8436 | /* DWARF name computation. */ | |
c906108c | 8437 | |
94af9270 KS |
8438 | /* A helper function for dwarf2_compute_name which determines whether DIE |
8439 | needs to have the name of the scope prepended to the name listed in the | |
8440 | die. */ | |
8441 | ||
8442 | static int | |
8443 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8444 | { | |
1c809c68 TT |
8445 | struct attribute *attr; |
8446 | ||
94af9270 KS |
8447 | switch (die->tag) |
8448 | { | |
8449 | case DW_TAG_namespace: | |
8450 | case DW_TAG_typedef: | |
8451 | case DW_TAG_class_type: | |
8452 | case DW_TAG_interface_type: | |
8453 | case DW_TAG_structure_type: | |
8454 | case DW_TAG_union_type: | |
8455 | case DW_TAG_enumeration_type: | |
8456 | case DW_TAG_enumerator: | |
8457 | case DW_TAG_subprogram: | |
08a76f8a | 8458 | case DW_TAG_inlined_subroutine: |
94af9270 | 8459 | case DW_TAG_member: |
74921315 | 8460 | case DW_TAG_imported_declaration: |
94af9270 KS |
8461 | return 1; |
8462 | ||
8463 | case DW_TAG_variable: | |
c2b0a229 | 8464 | case DW_TAG_constant: |
94af9270 KS |
8465 | /* We only need to prefix "globally" visible variables. These include |
8466 | any variable marked with DW_AT_external or any variable that | |
8467 | lives in a namespace. [Variables in anonymous namespaces | |
8468 | require prefixing, but they are not DW_AT_external.] */ | |
8469 | ||
8470 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
8471 | { | |
8472 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 8473 | |
94af9270 KS |
8474 | return die_needs_namespace (die_specification (die, &spec_cu), |
8475 | spec_cu); | |
8476 | } | |
8477 | ||
1c809c68 | 8478 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
8479 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
8480 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
8481 | return 0; |
8482 | /* A variable in a lexical block of some kind does not need a | |
8483 | namespace, even though in C++ such variables may be external | |
8484 | and have a mangled name. */ | |
8485 | if (die->parent->tag == DW_TAG_lexical_block | |
8486 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
8487 | || die->parent->tag == DW_TAG_catch_block |
8488 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
8489 | return 0; |
8490 | return 1; | |
94af9270 KS |
8491 | |
8492 | default: | |
8493 | return 0; | |
8494 | } | |
8495 | } | |
8496 | ||
8497 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, | |
a766d390 | 8498 | compute the physname for the object, which include a method's: |
9c37b5ae | 8499 | - formal parameters (C++), |
a766d390 | 8500 | - receiver type (Go), |
a766d390 DE |
8501 | |
8502 | The term "physname" is a bit confusing. | |
8503 | For C++, for example, it is the demangled name. | |
8504 | For Go, for example, it's the mangled name. | |
94af9270 | 8505 | |
af6b7be1 JB |
8506 | For Ada, return the DIE's linkage name rather than the fully qualified |
8507 | name. PHYSNAME is ignored.. | |
8508 | ||
94af9270 KS |
8509 | The result is allocated on the objfile_obstack and canonicalized. */ |
8510 | ||
8511 | static const char * | |
15d034d0 TT |
8512 | dwarf2_compute_name (const char *name, |
8513 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
8514 | int physname) |
8515 | { | |
bb5ed363 DE |
8516 | struct objfile *objfile = cu->objfile; |
8517 | ||
94af9270 KS |
8518 | if (name == NULL) |
8519 | name = dwarf2_name (die, cu); | |
8520 | ||
2ee7123e DE |
8521 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
8522 | but otherwise compute it by typename_concat inside GDB. | |
8523 | FIXME: Actually this is not really true, or at least not always true. | |
8524 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
8525 | Fortran names because there is no mangling standard. So new_symbol_full | |
8526 | will set the demangled name to the result of dwarf2_full_name, and it is | |
8527 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
8528 | if (cu->language == language_ada |
8529 | || (cu->language == language_fortran && physname)) | |
8530 | { | |
8531 | /* For Ada unit, we prefer the linkage name over the name, as | |
8532 | the former contains the exported name, which the user expects | |
8533 | to be able to reference. Ideally, we want the user to be able | |
8534 | to reference this entity using either natural or linkage name, | |
8535 | but we haven't started looking at this enhancement yet. */ | |
2ee7123e | 8536 | const char *linkage_name; |
f55ee35c | 8537 | |
2ee7123e DE |
8538 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); |
8539 | if (linkage_name == NULL) | |
8540 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8541 | if (linkage_name != NULL) | |
8542 | return linkage_name; | |
f55ee35c JK |
8543 | } |
8544 | ||
94af9270 KS |
8545 | /* These are the only languages we know how to qualify names in. */ |
8546 | if (name != NULL | |
9c37b5ae | 8547 | && (cu->language == language_cplus |
c44af4eb TT |
8548 | || cu->language == language_fortran || cu->language == language_d |
8549 | || cu->language == language_rust)) | |
94af9270 KS |
8550 | { |
8551 | if (die_needs_namespace (die, cu)) | |
8552 | { | |
8553 | long length; | |
0d5cff50 | 8554 | const char *prefix; |
34a68019 | 8555 | const char *canonical_name = NULL; |
94af9270 | 8556 | |
d7e74731 PA |
8557 | string_file buf; |
8558 | ||
94af9270 | 8559 | prefix = determine_prefix (die, cu); |
94af9270 KS |
8560 | if (*prefix != '\0') |
8561 | { | |
f55ee35c JK |
8562 | char *prefixed_name = typename_concat (NULL, prefix, name, |
8563 | physname, cu); | |
9a619af0 | 8564 | |
d7e74731 | 8565 | buf.puts (prefixed_name); |
94af9270 KS |
8566 | xfree (prefixed_name); |
8567 | } | |
8568 | else | |
d7e74731 | 8569 | buf.puts (name); |
94af9270 | 8570 | |
98bfdba5 PA |
8571 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
8572 | as children with DW_TAG_template_type_param or | |
8573 | DW_TAG_value_type_param. If the latter, add them to the name | |
8574 | here. If the name already has template parameters, then | |
8575 | skip this step; some versions of GCC emit both, and | |
8576 | it is more efficient to use the pre-computed name. | |
8577 | ||
8578 | Something to keep in mind about this process: it is very | |
8579 | unlikely, or in some cases downright impossible, to produce | |
8580 | something that will match the mangled name of a function. | |
8581 | If the definition of the function has the same debug info, | |
8582 | we should be able to match up with it anyway. But fallbacks | |
8583 | using the minimal symbol, for instance to find a method | |
8584 | implemented in a stripped copy of libstdc++, will not work. | |
8585 | If we do not have debug info for the definition, we will have to | |
8586 | match them up some other way. | |
8587 | ||
8588 | When we do name matching there is a related problem with function | |
8589 | templates; two instantiated function templates are allowed to | |
8590 | differ only by their return types, which we do not add here. */ | |
8591 | ||
8592 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
8593 | { | |
8594 | struct attribute *attr; | |
8595 | struct die_info *child; | |
8596 | int first = 1; | |
8597 | ||
8598 | die->building_fullname = 1; | |
8599 | ||
8600 | for (child = die->child; child != NULL; child = child->sibling) | |
8601 | { | |
8602 | struct type *type; | |
12df843f | 8603 | LONGEST value; |
d521ce57 | 8604 | const gdb_byte *bytes; |
98bfdba5 PA |
8605 | struct dwarf2_locexpr_baton *baton; |
8606 | struct value *v; | |
8607 | ||
8608 | if (child->tag != DW_TAG_template_type_param | |
8609 | && child->tag != DW_TAG_template_value_param) | |
8610 | continue; | |
8611 | ||
8612 | if (first) | |
8613 | { | |
d7e74731 | 8614 | buf.puts ("<"); |
98bfdba5 PA |
8615 | first = 0; |
8616 | } | |
8617 | else | |
d7e74731 | 8618 | buf.puts (", "); |
98bfdba5 PA |
8619 | |
8620 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
8621 | if (attr == NULL) | |
8622 | { | |
8623 | complaint (&symfile_complaints, | |
8624 | _("template parameter missing DW_AT_type")); | |
d7e74731 | 8625 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
8626 | continue; |
8627 | } | |
8628 | type = die_type (child, cu); | |
8629 | ||
8630 | if (child->tag == DW_TAG_template_type_param) | |
8631 | { | |
d7e74731 | 8632 | c_print_type (type, "", &buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
8633 | continue; |
8634 | } | |
8635 | ||
8636 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
8637 | if (attr == NULL) | |
8638 | { | |
8639 | complaint (&symfile_complaints, | |
3e43a32a MS |
8640 | _("template parameter missing " |
8641 | "DW_AT_const_value")); | |
d7e74731 | 8642 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
8643 | continue; |
8644 | } | |
8645 | ||
8646 | dwarf2_const_value_attr (attr, type, name, | |
8647 | &cu->comp_unit_obstack, cu, | |
8648 | &value, &bytes, &baton); | |
8649 | ||
8650 | if (TYPE_NOSIGN (type)) | |
8651 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
8652 | changed, this can use value_print instead. */ | |
d7e74731 | 8653 | c_printchar (value, type, &buf); |
98bfdba5 PA |
8654 | else |
8655 | { | |
8656 | struct value_print_options opts; | |
8657 | ||
8658 | if (baton != NULL) | |
8659 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
8660 | baton->data, | |
8661 | baton->size, | |
8662 | baton->per_cu); | |
8663 | else if (bytes != NULL) | |
8664 | { | |
8665 | v = allocate_value (type); | |
8666 | memcpy (value_contents_writeable (v), bytes, | |
8667 | TYPE_LENGTH (type)); | |
8668 | } | |
8669 | else | |
8670 | v = value_from_longest (type, value); | |
8671 | ||
3e43a32a MS |
8672 | /* Specify decimal so that we do not depend on |
8673 | the radix. */ | |
98bfdba5 PA |
8674 | get_formatted_print_options (&opts, 'd'); |
8675 | opts.raw = 1; | |
d7e74731 | 8676 | value_print (v, &buf, &opts); |
98bfdba5 PA |
8677 | release_value (v); |
8678 | value_free (v); | |
8679 | } | |
8680 | } | |
8681 | ||
8682 | die->building_fullname = 0; | |
8683 | ||
8684 | if (!first) | |
8685 | { | |
8686 | /* Close the argument list, with a space if necessary | |
8687 | (nested templates). */ | |
d7e74731 PA |
8688 | if (!buf.empty () && buf.string ().back () == '>') |
8689 | buf.puts (" >"); | |
98bfdba5 | 8690 | else |
d7e74731 | 8691 | buf.puts (">"); |
98bfdba5 PA |
8692 | } |
8693 | } | |
8694 | ||
9c37b5ae | 8695 | /* For C++ methods, append formal parameter type |
94af9270 | 8696 | information, if PHYSNAME. */ |
6e70227d | 8697 | |
94af9270 | 8698 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 8699 | && cu->language == language_cplus) |
94af9270 KS |
8700 | { |
8701 | struct type *type = read_type_die (die, cu); | |
8702 | ||
d7e74731 | 8703 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 8704 | &type_print_raw_options); |
94af9270 | 8705 | |
9c37b5ae | 8706 | if (cu->language == language_cplus) |
94af9270 | 8707 | { |
60430eff DJ |
8708 | /* Assume that an artificial first parameter is |
8709 | "this", but do not crash if it is not. RealView | |
8710 | marks unnamed (and thus unused) parameters as | |
8711 | artificial; there is no way to differentiate | |
8712 | the two cases. */ | |
94af9270 KS |
8713 | if (TYPE_NFIELDS (type) > 0 |
8714 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 8715 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
8716 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
8717 | 0)))) | |
d7e74731 | 8718 | buf.puts (" const"); |
94af9270 KS |
8719 | } |
8720 | } | |
8721 | ||
d7e74731 | 8722 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
8723 | |
8724 | if (cu->language == language_cplus) | |
34a68019 | 8725 | canonical_name |
322a8516 | 8726 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
8727 | &objfile->per_bfd->storage_obstack); |
8728 | ||
8729 | /* If we only computed INTERMEDIATE_NAME, or if | |
8730 | INTERMEDIATE_NAME is already canonical, then we need to | |
8731 | copy it to the appropriate obstack. */ | |
322a8516 | 8732 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
8733 | name = ((const char *) |
8734 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
8735 | intermediate_name.c_str (), |
8736 | intermediate_name.length ())); | |
34a68019 TT |
8737 | else |
8738 | name = canonical_name; | |
94af9270 KS |
8739 | } |
8740 | } | |
8741 | ||
8742 | return name; | |
8743 | } | |
8744 | ||
0114d602 DJ |
8745 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
8746 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 8747 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
8748 | not have a name. NAME may either be from a previous call to |
8749 | dwarf2_name or NULL. | |
8750 | ||
9c37b5ae | 8751 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
8752 | |
8753 | static const char * | |
15d034d0 | 8754 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 8755 | { |
94af9270 KS |
8756 | return dwarf2_compute_name (name, die, cu, 0); |
8757 | } | |
0114d602 | 8758 | |
94af9270 KS |
8759 | /* Construct a physname for the given DIE in CU. NAME may either be |
8760 | from a previous call to dwarf2_name or NULL. The result will be | |
8761 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
8762 | name. | |
0114d602 | 8763 | |
9c37b5ae | 8764 | The output string will be canonicalized (if C++). */ |
0114d602 | 8765 | |
94af9270 | 8766 | static const char * |
15d034d0 | 8767 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 8768 | { |
bb5ed363 | 8769 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
8770 | const char *retval, *mangled = NULL, *canon = NULL; |
8771 | struct cleanup *back_to; | |
8772 | int need_copy = 1; | |
8773 | ||
8774 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
8775 | on its own. */ | |
8776 | if (!die_needs_namespace (die, cu)) | |
8777 | return dwarf2_compute_name (name, die, cu, 1); | |
8778 | ||
8779 | back_to = make_cleanup (null_cleanup, NULL); | |
8780 | ||
7d45c7c3 KB |
8781 | mangled = dwarf2_string_attr (die, DW_AT_linkage_name, cu); |
8782 | if (mangled == NULL) | |
8783 | mangled = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
900e11f9 | 8784 | |
e98c9e7c TT |
8785 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
8786 | See https://github.com/rust-lang/rust/issues/32925. */ | |
8787 | if (cu->language == language_rust && mangled != NULL | |
8788 | && strchr (mangled, '{') != NULL) | |
8789 | mangled = NULL; | |
8790 | ||
900e11f9 JK |
8791 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
8792 | has computed. */ | |
7d45c7c3 | 8793 | if (mangled != NULL) |
900e11f9 JK |
8794 | { |
8795 | char *demangled; | |
8796 | ||
900e11f9 JK |
8797 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return |
8798 | type. It is easier for GDB users to search for such functions as | |
8799 | `name(params)' than `long name(params)'. In such case the minimal | |
8800 | symbol names do not match the full symbol names but for template | |
8801 | functions there is never a need to look up their definition from their | |
8802 | declaration so the only disadvantage remains the minimal symbol | |
8803 | variant `long name(params)' does not have the proper inferior type. | |
8804 | */ | |
8805 | ||
a766d390 DE |
8806 | if (cu->language == language_go) |
8807 | { | |
8808 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
8809 | new_symbol_full assumes we return the mangled name. | |
8810 | This just undoes that lie until things are cleaned up. */ | |
8811 | demangled = NULL; | |
8812 | } | |
8813 | else | |
8814 | { | |
8de20a37 | 8815 | demangled = gdb_demangle (mangled, |
9c37b5ae | 8816 | (DMGL_PARAMS | DMGL_ANSI | DMGL_RET_DROP)); |
a766d390 | 8817 | } |
900e11f9 JK |
8818 | if (demangled) |
8819 | { | |
8820 | make_cleanup (xfree, demangled); | |
8821 | canon = demangled; | |
8822 | } | |
8823 | else | |
8824 | { | |
8825 | canon = mangled; | |
8826 | need_copy = 0; | |
8827 | } | |
8828 | } | |
8829 | ||
8830 | if (canon == NULL || check_physname) | |
8831 | { | |
8832 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
8833 | ||
8834 | if (canon != NULL && strcmp (physname, canon) != 0) | |
8835 | { | |
8836 | /* It may not mean a bug in GDB. The compiler could also | |
8837 | compute DW_AT_linkage_name incorrectly. But in such case | |
8838 | GDB would need to be bug-to-bug compatible. */ | |
8839 | ||
8840 | complaint (&symfile_complaints, | |
8841 | _("Computed physname <%s> does not match demangled <%s> " | |
8842 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
4262abfb JK |
8843 | physname, canon, mangled, die->offset.sect_off, |
8844 | objfile_name (objfile)); | |
900e11f9 JK |
8845 | |
8846 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
8847 | is available here - over computed PHYSNAME. It is safer | |
8848 | against both buggy GDB and buggy compilers. */ | |
8849 | ||
8850 | retval = canon; | |
8851 | } | |
8852 | else | |
8853 | { | |
8854 | retval = physname; | |
8855 | need_copy = 0; | |
8856 | } | |
8857 | } | |
8858 | else | |
8859 | retval = canon; | |
8860 | ||
8861 | if (need_copy) | |
224c3ddb SM |
8862 | retval = ((const char *) |
8863 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
8864 | retval, strlen (retval))); | |
900e11f9 JK |
8865 | |
8866 | do_cleanups (back_to); | |
8867 | return retval; | |
0114d602 DJ |
8868 | } |
8869 | ||
74921315 KS |
8870 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
8871 | a new symbol for it. | |
8872 | ||
8873 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
8874 | ||
8875 | static int | |
8876 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
8877 | { | |
8878 | struct attribute *attr; | |
8879 | ||
8880 | /* If the die does not have a name, this is not a namespace | |
8881 | alias. */ | |
8882 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8883 | if (attr != NULL) | |
8884 | { | |
8885 | int num; | |
8886 | struct die_info *d = die; | |
8887 | struct dwarf2_cu *imported_cu = cu; | |
8888 | ||
8889 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
8890 | keep inspecting DIEs until we hit the underlying import. */ | |
8891 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
8892 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
8893 | { | |
8894 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
8895 | if (attr == NULL) | |
8896 | break; | |
8897 | ||
8898 | d = follow_die_ref (d, attr, &imported_cu); | |
8899 | if (d->tag != DW_TAG_imported_declaration) | |
8900 | break; | |
8901 | } | |
8902 | ||
8903 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
8904 | { | |
8905 | complaint (&symfile_complaints, | |
8906 | _("DIE at 0x%x has too many recursively imported " | |
8907 | "declarations"), d->offset.sect_off); | |
8908 | return 0; | |
8909 | } | |
8910 | ||
8911 | if (attr != NULL) | |
8912 | { | |
8913 | struct type *type; | |
8914 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
8915 | ||
8916 | type = get_die_type_at_offset (offset, cu->per_cu); | |
8917 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
8918 | { | |
8919 | /* This declaration is a global namespace alias. Add | |
8920 | a symbol for it whose type is the aliased namespace. */ | |
8921 | new_symbol (die, type, cu); | |
8922 | return 1; | |
8923 | } | |
8924 | } | |
8925 | } | |
8926 | ||
8927 | return 0; | |
8928 | } | |
8929 | ||
22cee43f PMR |
8930 | /* Return the using directives repository (global or local?) to use in the |
8931 | current context for LANGUAGE. | |
8932 | ||
8933 | For Ada, imported declarations can materialize renamings, which *may* be | |
8934 | global. However it is impossible (for now?) in DWARF to distinguish | |
8935 | "external" imported declarations and "static" ones. As all imported | |
8936 | declarations seem to be static in all other languages, make them all CU-wide | |
8937 | global only in Ada. */ | |
8938 | ||
8939 | static struct using_direct ** | |
8940 | using_directives (enum language language) | |
8941 | { | |
8942 | if (language == language_ada && context_stack_depth == 0) | |
8943 | return &global_using_directives; | |
8944 | else | |
8945 | return &local_using_directives; | |
8946 | } | |
8947 | ||
27aa8d6a SW |
8948 | /* Read the import statement specified by the given die and record it. */ |
8949 | ||
8950 | static void | |
8951 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
8952 | { | |
bb5ed363 | 8953 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 8954 | struct attribute *import_attr; |
32019081 | 8955 | struct die_info *imported_die, *child_die; |
de4affc9 | 8956 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 8957 | const char *imported_name; |
794684b6 | 8958 | const char *imported_name_prefix; |
13387711 SW |
8959 | const char *canonical_name; |
8960 | const char *import_alias; | |
8961 | const char *imported_declaration = NULL; | |
794684b6 | 8962 | const char *import_prefix; |
32019081 JK |
8963 | VEC (const_char_ptr) *excludes = NULL; |
8964 | struct cleanup *cleanups; | |
13387711 | 8965 | |
27aa8d6a SW |
8966 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
8967 | if (import_attr == NULL) | |
8968 | { | |
8969 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8970 | dwarf_tag_name (die->tag)); | |
8971 | return; | |
8972 | } | |
8973 | ||
de4affc9 CC |
8974 | imported_cu = cu; |
8975 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
8976 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
8977 | if (imported_name == NULL) |
8978 | { | |
8979 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
8980 | ||
8981 | The import in the following code: | |
8982 | namespace A | |
8983 | { | |
8984 | typedef int B; | |
8985 | } | |
8986 | ||
8987 | int main () | |
8988 | { | |
8989 | using A::B; | |
8990 | B b; | |
8991 | return b; | |
8992 | } | |
8993 | ||
8994 | ... | |
8995 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
8996 | <52> DW_AT_decl_file : 1 | |
8997 | <53> DW_AT_decl_line : 6 | |
8998 | <54> DW_AT_import : <0x75> | |
8999 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
9000 | <59> DW_AT_name : B | |
9001 | <5b> DW_AT_decl_file : 1 | |
9002 | <5c> DW_AT_decl_line : 2 | |
9003 | <5d> DW_AT_type : <0x6e> | |
9004 | ... | |
9005 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
9006 | <76> DW_AT_byte_size : 4 | |
9007 | <77> DW_AT_encoding : 5 (signed) | |
9008 | ||
9009 | imports the wrong die ( 0x75 instead of 0x58 ). | |
9010 | This case will be ignored until the gcc bug is fixed. */ | |
9011 | return; | |
9012 | } | |
9013 | ||
82856980 SW |
9014 | /* Figure out the local name after import. */ |
9015 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 9016 | |
794684b6 SW |
9017 | /* Figure out where the statement is being imported to. */ |
9018 | import_prefix = determine_prefix (die, cu); | |
9019 | ||
9020 | /* Figure out what the scope of the imported die is and prepend it | |
9021 | to the name of the imported die. */ | |
de4affc9 | 9022 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 9023 | |
f55ee35c JK |
9024 | if (imported_die->tag != DW_TAG_namespace |
9025 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 9026 | { |
13387711 SW |
9027 | imported_declaration = imported_name; |
9028 | canonical_name = imported_name_prefix; | |
794684b6 | 9029 | } |
13387711 | 9030 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 9031 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
9032 | imported_name_prefix, |
9033 | (cu->language == language_d ? "." : "::"), | |
9034 | imported_name, (char *) NULL); | |
13387711 SW |
9035 | else |
9036 | canonical_name = imported_name; | |
794684b6 | 9037 | |
32019081 JK |
9038 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
9039 | ||
9040 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
9041 | for (child_die = die->child; child_die && child_die->tag; | |
9042 | child_die = sibling_die (child_die)) | |
9043 | { | |
9044 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
9045 | represented by an imported module entry with an import attribute | |
9046 | referring to the module and owned entries corresponding to those | |
9047 | entities that are renamed as part of being imported. */ | |
9048 | ||
9049 | if (child_die->tag != DW_TAG_imported_declaration) | |
9050 | { | |
9051 | complaint (&symfile_complaints, | |
9052 | _("child DW_TAG_imported_declaration expected " | |
9053 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 9054 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
9055 | continue; |
9056 | } | |
9057 | ||
9058 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
9059 | if (import_attr == NULL) | |
9060 | { | |
9061 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
9062 | dwarf_tag_name (child_die->tag)); | |
9063 | continue; | |
9064 | } | |
9065 | ||
9066 | imported_cu = cu; | |
9067 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
9068 | &imported_cu); | |
9069 | imported_name = dwarf2_name (imported_die, imported_cu); | |
9070 | if (imported_name == NULL) | |
9071 | { | |
9072 | complaint (&symfile_complaints, | |
9073 | _("child DW_TAG_imported_declaration has unknown " | |
9074 | "imported name - DIE at 0x%x [in module %s]"), | |
4262abfb | 9075 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
9076 | continue; |
9077 | } | |
9078 | ||
9079 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
9080 | ||
9081 | process_die (child_die, cu); | |
9082 | } | |
9083 | ||
22cee43f PMR |
9084 | add_using_directive (using_directives (cu->language), |
9085 | import_prefix, | |
9086 | canonical_name, | |
9087 | import_alias, | |
9088 | imported_declaration, | |
9089 | excludes, | |
9090 | 0, | |
9091 | &objfile->objfile_obstack); | |
32019081 JK |
9092 | |
9093 | do_cleanups (cleanups); | |
27aa8d6a SW |
9094 | } |
9095 | ||
f4dc4d17 | 9096 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 9097 | |
cb1df416 DJ |
9098 | static void |
9099 | free_cu_line_header (void *arg) | |
9100 | { | |
9a3c8263 | 9101 | struct dwarf2_cu *cu = (struct dwarf2_cu *) arg; |
cb1df416 DJ |
9102 | |
9103 | free_line_header (cu->line_header); | |
9104 | cu->line_header = NULL; | |
9105 | } | |
9106 | ||
1b80a9fa JK |
9107 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
9108 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
9109 | this, it was first present in GCC release 4.3.0. */ | |
9110 | ||
9111 | static int | |
9112 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
9113 | { | |
9114 | if (!cu->checked_producer) | |
9115 | check_producer (cu); | |
9116 | ||
9117 | return cu->producer_is_gcc_lt_4_3; | |
9118 | } | |
9119 | ||
9291a0cd TT |
9120 | static void |
9121 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 9122 | const char **name, const char **comp_dir) |
9291a0cd | 9123 | { |
9291a0cd TT |
9124 | /* Find the filename. Do not use dwarf2_name here, since the filename |
9125 | is not a source language identifier. */ | |
7d45c7c3 KB |
9126 | *name = dwarf2_string_attr (die, DW_AT_name, cu); |
9127 | *comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 9128 | |
7d45c7c3 KB |
9129 | if (*comp_dir == NULL |
9130 | && producer_is_gcc_lt_4_3 (cu) && *name != NULL | |
9131 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 9132 | { |
15d034d0 TT |
9133 | char *d = ldirname (*name); |
9134 | ||
9135 | *comp_dir = d; | |
9136 | if (d != NULL) | |
9137 | make_cleanup (xfree, d); | |
9291a0cd TT |
9138 | } |
9139 | if (*comp_dir != NULL) | |
9140 | { | |
9141 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
9142 | directory, get rid of it. */ | |
e6a959d6 | 9143 | const char *cp = strchr (*comp_dir, ':'); |
9291a0cd TT |
9144 | |
9145 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
9146 | *comp_dir = cp + 1; | |
9147 | } | |
9148 | ||
9149 | if (*name == NULL) | |
9150 | *name = "<unknown>"; | |
9151 | } | |
9152 | ||
f4dc4d17 DE |
9153 | /* Handle DW_AT_stmt_list for a compilation unit. |
9154 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
9155 | COMP_DIR is the compilation directory. LOWPC is passed to |
9156 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
9157 | |
9158 | static void | |
9159 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 9160 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 9161 | { |
527f3840 | 9162 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 9163 | struct attribute *attr; |
527f3840 JK |
9164 | unsigned int line_offset; |
9165 | struct line_header line_header_local; | |
9166 | hashval_t line_header_local_hash; | |
9167 | unsigned u; | |
9168 | void **slot; | |
9169 | int decode_mapping; | |
2ab95328 | 9170 | |
f4dc4d17 DE |
9171 | gdb_assert (! cu->per_cu->is_debug_types); |
9172 | ||
2ab95328 | 9173 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
9174 | if (attr == NULL) |
9175 | return; | |
9176 | ||
9177 | line_offset = DW_UNSND (attr); | |
9178 | ||
9179 | /* The line header hash table is only created if needed (it exists to | |
9180 | prevent redundant reading of the line table for partial_units). | |
9181 | If we're given a partial_unit, we'll need it. If we're given a | |
9182 | compile_unit, then use the line header hash table if it's already | |
9183 | created, but don't create one just yet. */ | |
9184 | ||
9185 | if (dwarf2_per_objfile->line_header_hash == NULL | |
9186 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 9187 | { |
527f3840 JK |
9188 | dwarf2_per_objfile->line_header_hash |
9189 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
9190 | line_header_eq_voidp, | |
9191 | free_line_header_voidp, | |
9192 | &objfile->objfile_obstack, | |
9193 | hashtab_obstack_allocate, | |
9194 | dummy_obstack_deallocate); | |
9195 | } | |
2ab95328 | 9196 | |
527f3840 JK |
9197 | line_header_local.offset.sect_off = line_offset; |
9198 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; | |
9199 | line_header_local_hash = line_header_hash (&line_header_local); | |
9200 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
9201 | { | |
9202 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9203 | &line_header_local, | |
9204 | line_header_local_hash, NO_INSERT); | |
9205 | ||
9206 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
9207 | is not present in *SLOT (since if there is something in *SLOT then | |
9208 | it will be for a partial_unit). */ | |
9209 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 9210 | { |
527f3840 | 9211 | gdb_assert (*slot != NULL); |
9a3c8263 | 9212 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 9213 | return; |
dee91e82 | 9214 | } |
2ab95328 | 9215 | } |
527f3840 JK |
9216 | |
9217 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
9218 | We always have to call also dwarf_decode_lines for it. */ | |
9219 | cu->line_header = dwarf_decode_line_header (line_offset, cu); | |
9220 | if (cu->line_header == NULL) | |
9221 | return; | |
9222 | ||
9223 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
9224 | slot = NULL; | |
9225 | else | |
9226 | { | |
9227 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9228 | &line_header_local, | |
9229 | line_header_local_hash, INSERT); | |
9230 | gdb_assert (slot != NULL); | |
9231 | } | |
9232 | if (slot != NULL && *slot == NULL) | |
9233 | { | |
9234 | /* This newly decoded line number information unit will be owned | |
9235 | by line_header_hash hash table. */ | |
9236 | *slot = cu->line_header; | |
9237 | } | |
9238 | else | |
9239 | { | |
9240 | /* We cannot free any current entry in (*slot) as that struct line_header | |
9241 | may be already used by multiple CUs. Create only temporary decoded | |
9242 | line_header for this CU - it may happen at most once for each line | |
9243 | number information unit. And if we're not using line_header_hash | |
9244 | then this is what we want as well. */ | |
9245 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
9246 | make_cleanup (free_cu_line_header, cu); | |
9247 | } | |
9248 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
9249 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
9250 | decode_mapping); | |
2ab95328 TT |
9251 | } |
9252 | ||
95554aad | 9253 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 9254 | |
c906108c | 9255 | static void |
e7c27a73 | 9256 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9257 | { |
dee91e82 | 9258 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 9259 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
debd256d | 9260 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 9261 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
9262 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
9263 | struct attribute *attr; | |
15d034d0 TT |
9264 | const char *name = NULL; |
9265 | const char *comp_dir = NULL; | |
c906108c | 9266 | struct die_info *child_die; |
e142c38c | 9267 | CORE_ADDR baseaddr; |
6e70227d | 9268 | |
e142c38c | 9269 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 9270 | |
fae299cd | 9271 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
9272 | |
9273 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
9274 | from finish_block. */ | |
2acceee2 | 9275 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 9276 | lowpc = highpc; |
3e29f34a | 9277 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 9278 | |
9291a0cd | 9279 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 9280 | |
95554aad | 9281 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 9282 | |
f4b8a18d KW |
9283 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
9284 | standardised yet. As a workaround for the language detection we fall | |
9285 | back to the DW_AT_producer string. */ | |
9286 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
9287 | cu->language = language_opencl; | |
9288 | ||
3019eac3 DE |
9289 | /* Similar hack for Go. */ |
9290 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
9291 | set_cu_language (DW_LANG_Go, cu); | |
9292 | ||
f4dc4d17 | 9293 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
9294 | |
9295 | /* Decode line number information if present. We do this before | |
9296 | processing child DIEs, so that the line header table is available | |
9297 | for DW_AT_decl_file. */ | |
c3b7b696 | 9298 | handle_DW_AT_stmt_list (die, cu, comp_dir, lowpc); |
3019eac3 DE |
9299 | |
9300 | /* Process all dies in compilation unit. */ | |
9301 | if (die->child != NULL) | |
9302 | { | |
9303 | child_die = die->child; | |
9304 | while (child_die && child_die->tag) | |
9305 | { | |
9306 | process_die (child_die, cu); | |
9307 | child_die = sibling_die (child_die); | |
9308 | } | |
9309 | } | |
9310 | ||
9311 | /* Decode macro information, if present. Dwarf 2 macro information | |
9312 | refers to information in the line number info statement program | |
9313 | header, so we can only read it if we've read the header | |
9314 | successfully. */ | |
0af92d60 JK |
9315 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
9316 | if (attr == NULL) | |
9317 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
9318 | if (attr && cu->line_header) |
9319 | { | |
9320 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
9321 | complaint (&symfile_complaints, | |
0af92d60 | 9322 | _("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 9323 | |
43f3e411 | 9324 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
9325 | } |
9326 | else | |
9327 | { | |
9328 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
9329 | if (attr && cu->line_header) | |
9330 | { | |
9331 | unsigned int macro_offset = DW_UNSND (attr); | |
9332 | ||
43f3e411 | 9333 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
9334 | } |
9335 | } | |
9336 | ||
9337 | do_cleanups (back_to); | |
9338 | } | |
9339 | ||
f4dc4d17 DE |
9340 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
9341 | Create the set of symtabs used by this TU, or if this TU is sharing | |
9342 | symtabs with another TU and the symtabs have already been created | |
9343 | then restore those symtabs in the line header. | |
9344 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
9345 | |
9346 | static void | |
f4dc4d17 | 9347 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 9348 | { |
f4dc4d17 DE |
9349 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
9350 | struct type_unit_group *tu_group; | |
9351 | int first_time; | |
9352 | struct line_header *lh; | |
3019eac3 | 9353 | struct attribute *attr; |
f4dc4d17 | 9354 | unsigned int i, line_offset; |
0186c6a7 | 9355 | struct signatured_type *sig_type; |
3019eac3 | 9356 | |
f4dc4d17 | 9357 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 9358 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 9359 | |
f4dc4d17 | 9360 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 9361 | |
f4dc4d17 | 9362 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 9363 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
9364 | if (sig_type->type_unit_group == NULL) |
9365 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
9366 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
9367 | |
9368 | /* If we've already processed this stmt_list there's no real need to | |
9369 | do it again, we could fake it and just recreate the part we need | |
9370 | (file name,index -> symtab mapping). If data shows this optimization | |
9371 | is useful we can do it then. */ | |
43f3e411 | 9372 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
9373 | |
9374 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
9375 | debug info. */ | |
9376 | lh = NULL; | |
9377 | if (attr != NULL) | |
3019eac3 | 9378 | { |
f4dc4d17 DE |
9379 | line_offset = DW_UNSND (attr); |
9380 | lh = dwarf_decode_line_header (line_offset, cu); | |
9381 | } | |
9382 | if (lh == NULL) | |
9383 | { | |
9384 | if (first_time) | |
9385 | dwarf2_start_symtab (cu, "", NULL, 0); | |
9386 | else | |
9387 | { | |
9388 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 9389 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 9390 | } |
f4dc4d17 | 9391 | return; |
3019eac3 DE |
9392 | } |
9393 | ||
f4dc4d17 DE |
9394 | cu->line_header = lh; |
9395 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 9396 | |
f4dc4d17 DE |
9397 | if (first_time) |
9398 | { | |
43f3e411 | 9399 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 9400 | |
1fd60fc0 DE |
9401 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
9402 | still initializing it, and our caller (a few levels up) | |
9403 | process_full_type_unit still needs to know if this is the first | |
9404 | time. */ | |
9405 | ||
f4dc4d17 DE |
9406 | tu_group->num_symtabs = lh->num_file_names; |
9407 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 9408 | |
f4dc4d17 DE |
9409 | for (i = 0; i < lh->num_file_names; ++i) |
9410 | { | |
d521ce57 | 9411 | const char *dir = NULL; |
f4dc4d17 | 9412 | struct file_entry *fe = &lh->file_names[i]; |
3019eac3 | 9413 | |
afa6c9ab | 9414 | if (fe->dir_index && lh->include_dirs != NULL) |
f4dc4d17 | 9415 | dir = lh->include_dirs[fe->dir_index - 1]; |
4d663531 | 9416 | dwarf2_start_subfile (fe->name, dir); |
3019eac3 | 9417 | |
f4dc4d17 DE |
9418 | if (current_subfile->symtab == NULL) |
9419 | { | |
9420 | /* NOTE: start_subfile will recognize when it's been passed | |
9421 | a file it has already seen. So we can't assume there's a | |
43f3e411 | 9422 | simple mapping from lh->file_names to subfiles, plus |
f4dc4d17 | 9423 | lh->file_names may contain dups. */ |
43f3e411 DE |
9424 | current_subfile->symtab |
9425 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
9426 | } |
9427 | ||
9428 | fe->symtab = current_subfile->symtab; | |
9429 | tu_group->symtabs[i] = fe->symtab; | |
9430 | } | |
9431 | } | |
9432 | else | |
3019eac3 | 9433 | { |
0ab9ce85 | 9434 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 DE |
9435 | |
9436 | for (i = 0; i < lh->num_file_names; ++i) | |
9437 | { | |
9438 | struct file_entry *fe = &lh->file_names[i]; | |
9439 | ||
9440 | fe->symtab = tu_group->symtabs[i]; | |
9441 | } | |
3019eac3 DE |
9442 | } |
9443 | ||
f4dc4d17 DE |
9444 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
9445 | so they don't have a "real" (so to speak) symtab anyway. | |
9446 | There is later code that will assign the main symtab to all symbols | |
9447 | that don't have one. We need to handle the case of a symbol with a | |
9448 | missing symtab (DW_AT_decl_file) anyway. */ | |
9449 | } | |
3019eac3 | 9450 | |
f4dc4d17 DE |
9451 | /* Process DW_TAG_type_unit. |
9452 | For TUs we want to skip the first top level sibling if it's not the | |
9453 | actual type being defined by this TU. In this case the first top | |
9454 | level sibling is there to provide context only. */ | |
3019eac3 | 9455 | |
f4dc4d17 DE |
9456 | static void |
9457 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9458 | { | |
9459 | struct die_info *child_die; | |
3019eac3 | 9460 | |
f4dc4d17 DE |
9461 | prepare_one_comp_unit (cu, die, language_minimal); |
9462 | ||
9463 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
9464 | We do this before processing child DIEs, so that the line header table | |
9465 | is available for DW_AT_decl_file. */ | |
9466 | setup_type_unit_groups (die, cu); | |
9467 | ||
9468 | if (die->child != NULL) | |
9469 | { | |
9470 | child_die = die->child; | |
9471 | while (child_die && child_die->tag) | |
9472 | { | |
9473 | process_die (child_die, cu); | |
9474 | child_die = sibling_die (child_die); | |
9475 | } | |
9476 | } | |
3019eac3 DE |
9477 | } |
9478 | \f | |
80626a55 DE |
9479 | /* DWO/DWP files. |
9480 | ||
9481 | http://gcc.gnu.org/wiki/DebugFission | |
9482 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
9483 | ||
9484 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
9485 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
9486 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
9487 | |
9488 | static hashval_t | |
9489 | hash_dwo_file (const void *item) | |
9490 | { | |
9a3c8263 | 9491 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 9492 | hashval_t hash; |
3019eac3 | 9493 | |
a2ce51a0 DE |
9494 | hash = htab_hash_string (dwo_file->dwo_name); |
9495 | if (dwo_file->comp_dir != NULL) | |
9496 | hash += htab_hash_string (dwo_file->comp_dir); | |
9497 | return hash; | |
3019eac3 DE |
9498 | } |
9499 | ||
9500 | static int | |
9501 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
9502 | { | |
9a3c8263 SM |
9503 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
9504 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 9505 | |
a2ce51a0 DE |
9506 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
9507 | return 0; | |
9508 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
9509 | return lhs->comp_dir == rhs->comp_dir; | |
9510 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
9511 | } |
9512 | ||
9513 | /* Allocate a hash table for DWO files. */ | |
9514 | ||
9515 | static htab_t | |
9516 | allocate_dwo_file_hash_table (void) | |
9517 | { | |
9518 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9519 | ||
9520 | return htab_create_alloc_ex (41, | |
9521 | hash_dwo_file, | |
9522 | eq_dwo_file, | |
9523 | NULL, | |
9524 | &objfile->objfile_obstack, | |
9525 | hashtab_obstack_allocate, | |
9526 | dummy_obstack_deallocate); | |
9527 | } | |
9528 | ||
80626a55 DE |
9529 | /* Lookup DWO file DWO_NAME. */ |
9530 | ||
9531 | static void ** | |
0ac5b59e | 9532 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
9533 | { |
9534 | struct dwo_file find_entry; | |
9535 | void **slot; | |
9536 | ||
9537 | if (dwarf2_per_objfile->dwo_files == NULL) | |
9538 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
9539 | ||
9540 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
9541 | find_entry.dwo_name = dwo_name; |
9542 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
9543 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
9544 | ||
9545 | return slot; | |
9546 | } | |
9547 | ||
3019eac3 DE |
9548 | static hashval_t |
9549 | hash_dwo_unit (const void *item) | |
9550 | { | |
9a3c8263 | 9551 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
9552 | |
9553 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
9554 | return dwo_unit->signature; | |
9555 | } | |
9556 | ||
9557 | static int | |
9558 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
9559 | { | |
9a3c8263 SM |
9560 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
9561 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
9562 | |
9563 | /* The signature is assumed to be unique within the DWO file. | |
9564 | So while object file CU dwo_id's always have the value zero, | |
9565 | that's OK, assuming each object file DWO file has only one CU, | |
9566 | and that's the rule for now. */ | |
9567 | return lhs->signature == rhs->signature; | |
9568 | } | |
9569 | ||
9570 | /* Allocate a hash table for DWO CUs,TUs. | |
9571 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
9572 | ||
9573 | static htab_t | |
9574 | allocate_dwo_unit_table (struct objfile *objfile) | |
9575 | { | |
9576 | /* Start out with a pretty small number. | |
9577 | Generally DWO files contain only one CU and maybe some TUs. */ | |
9578 | return htab_create_alloc_ex (3, | |
9579 | hash_dwo_unit, | |
9580 | eq_dwo_unit, | |
9581 | NULL, | |
9582 | &objfile->objfile_obstack, | |
9583 | hashtab_obstack_allocate, | |
9584 | dummy_obstack_deallocate); | |
9585 | } | |
9586 | ||
80626a55 | 9587 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 9588 | |
19c3d4c9 | 9589 | struct create_dwo_cu_data |
3019eac3 DE |
9590 | { |
9591 | struct dwo_file *dwo_file; | |
19c3d4c9 | 9592 | struct dwo_unit dwo_unit; |
3019eac3 DE |
9593 | }; |
9594 | ||
19c3d4c9 | 9595 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
9596 | |
9597 | static void | |
19c3d4c9 DE |
9598 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
9599 | const gdb_byte *info_ptr, | |
9600 | struct die_info *comp_unit_die, | |
9601 | int has_children, | |
9602 | void *datap) | |
3019eac3 DE |
9603 | { |
9604 | struct dwarf2_cu *cu = reader->cu; | |
3019eac3 | 9605 | sect_offset offset = cu->per_cu->offset; |
8a0459fd | 9606 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 9607 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 9608 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 9609 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 9610 | struct attribute *attr; |
3019eac3 DE |
9611 | |
9612 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
9613 | if (attr == NULL) | |
9614 | { | |
19c3d4c9 DE |
9615 | complaint (&symfile_complaints, |
9616 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
9617 | " its dwo_id [in module %s]"), | |
9618 | offset.sect_off, dwo_file->dwo_name); | |
3019eac3 DE |
9619 | return; |
9620 | } | |
9621 | ||
3019eac3 DE |
9622 | dwo_unit->dwo_file = dwo_file; |
9623 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 9624 | dwo_unit->section = section; |
3019eac3 DE |
9625 | dwo_unit->offset = offset; |
9626 | dwo_unit->length = cu->per_cu->length; | |
9627 | ||
b4f54984 | 9628 | if (dwarf_read_debug) |
4031ecc5 DE |
9629 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9630 | offset.sect_off, hex_string (dwo_unit->signature)); | |
3019eac3 DE |
9631 | } |
9632 | ||
19c3d4c9 DE |
9633 | /* Create the dwo_unit for the lone CU in DWO_FILE. |
9634 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 | 9635 | |
19c3d4c9 DE |
9636 | static struct dwo_unit * |
9637 | create_dwo_cu (struct dwo_file *dwo_file) | |
3019eac3 DE |
9638 | { |
9639 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9640 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
d521ce57 | 9641 | const gdb_byte *info_ptr, *end_ptr; |
19c3d4c9 DE |
9642 | struct create_dwo_cu_data create_dwo_cu_data; |
9643 | struct dwo_unit *dwo_unit; | |
3019eac3 DE |
9644 | |
9645 | dwarf2_read_section (objfile, section); | |
9646 | info_ptr = section->buffer; | |
9647 | ||
9648 | if (info_ptr == NULL) | |
9649 | return NULL; | |
9650 | ||
b4f54984 | 9651 | if (dwarf_read_debug) |
19c3d4c9 DE |
9652 | { |
9653 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
a32a8923 DE |
9654 | get_section_name (section), |
9655 | get_section_file_name (section)); | |
19c3d4c9 | 9656 | } |
3019eac3 | 9657 | |
19c3d4c9 DE |
9658 | create_dwo_cu_data.dwo_file = dwo_file; |
9659 | dwo_unit = NULL; | |
3019eac3 DE |
9660 | |
9661 | end_ptr = info_ptr + section->size; | |
9662 | while (info_ptr < end_ptr) | |
9663 | { | |
9664 | struct dwarf2_per_cu_data per_cu; | |
9665 | ||
19c3d4c9 DE |
9666 | memset (&create_dwo_cu_data.dwo_unit, 0, |
9667 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
9668 | memset (&per_cu, 0, sizeof (per_cu)); |
9669 | per_cu.objfile = objfile; | |
9670 | per_cu.is_debug_types = 0; | |
9671 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 9672 | per_cu.section = section; |
3019eac3 | 9673 | |
33e80786 | 9674 | init_cutu_and_read_dies_no_follow (&per_cu, dwo_file, |
19c3d4c9 DE |
9675 | create_dwo_cu_reader, |
9676 | &create_dwo_cu_data); | |
9677 | ||
9678 | if (create_dwo_cu_data.dwo_unit.dwo_file != NULL) | |
9679 | { | |
9680 | /* If we've already found one, complain. We only support one | |
9681 | because having more than one requires hacking the dwo_name of | |
9682 | each to match, which is highly unlikely to happen. */ | |
9683 | if (dwo_unit != NULL) | |
9684 | { | |
9685 | complaint (&symfile_complaints, | |
9686 | _("Multiple CUs in DWO file %s [in module %s]"), | |
4262abfb | 9687 | dwo_file->dwo_name, objfile_name (objfile)); |
19c3d4c9 DE |
9688 | break; |
9689 | } | |
9690 | ||
9691 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9692 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
9693 | } | |
3019eac3 DE |
9694 | |
9695 | info_ptr += per_cu.length; | |
9696 | } | |
9697 | ||
19c3d4c9 | 9698 | return dwo_unit; |
3019eac3 DE |
9699 | } |
9700 | ||
80626a55 DE |
9701 | /* DWP file .debug_{cu,tu}_index section format: |
9702 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
9703 | ||
d2415c6c DE |
9704 | DWP Version 1: |
9705 | ||
80626a55 DE |
9706 | Both index sections have the same format, and serve to map a 64-bit |
9707 | signature to a set of section numbers. Each section begins with a header, | |
9708 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
9709 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
9710 | aligned at 8-byte boundaries in the file. | |
9711 | ||
d2415c6c DE |
9712 | The index section header consists of: |
9713 | ||
9714 | V, 32 bit version number | |
9715 | -, 32 bits unused | |
9716 | N, 32 bit number of compilation units or type units in the index | |
9717 | M, 32 bit number of slots in the hash table | |
80626a55 | 9718 | |
d2415c6c | 9719 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 9720 | |
d2415c6c DE |
9721 | The hash table begins at offset 16 in the section, and consists of an array |
9722 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
9723 | order of the application binary). Unused slots in the hash table are 0. | |
9724 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 9725 | |
d2415c6c DE |
9726 | The parallel table begins immediately after the hash table |
9727 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
9728 | array of 32-bit indexes (using the byte order of the application binary), | |
9729 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
9730 | table contains a 32-bit index into the pool of section numbers. For unused | |
9731 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 9732 | |
73869dc2 DE |
9733 | The pool of section numbers begins immediately following the hash table |
9734 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
9735 | section numbers consists of an array of 32-bit words (using the byte order | |
9736 | of the application binary). Each item in the array is indexed starting | |
9737 | from 0. The hash table entry provides the index of the first section | |
9738 | number in the set. Additional section numbers in the set follow, and the | |
9739 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
9740 | ||
9741 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
9742 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
9743 | be the second entry. Other members of the set may follow in any order. | |
9744 | ||
9745 | --- | |
9746 | ||
9747 | DWP Version 2: | |
9748 | ||
9749 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
9750 | and the entries in the index tables are now offsets into these sections. | |
9751 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
9752 | section. | |
9753 | ||
9754 | Index Section Contents: | |
9755 | Header | |
9756 | Hash Table of Signatures dwp_hash_table.hash_table | |
9757 | Parallel Table of Indices dwp_hash_table.unit_table | |
9758 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
9759 | Table of Section Sizes dwp_hash_table.v2.sizes | |
9760 | ||
9761 | The index section header consists of: | |
9762 | ||
9763 | V, 32 bit version number | |
9764 | L, 32 bit number of columns in the table of section offsets | |
9765 | N, 32 bit number of compilation units or type units in the index | |
9766 | M, 32 bit number of slots in the hash table | |
9767 | ||
9768 | Numbers are recorded using the byte order of the application binary. | |
9769 | ||
9770 | The hash table has the same format as version 1. | |
9771 | The parallel table of indices has the same format as version 1, | |
9772 | except that the entries are origin-1 indices into the table of sections | |
9773 | offsets and the table of section sizes. | |
9774 | ||
9775 | The table of offsets begins immediately following the parallel table | |
9776 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
9777 | a two-dimensional array of 32-bit words (using the byte order of the | |
9778 | application binary), with L columns and N+1 rows, in row-major order. | |
9779 | Each row in the array is indexed starting from 0. The first row provides | |
9780 | a key to the remaining rows: each column in this row provides an identifier | |
9781 | for a debug section, and the offsets in the same column of subsequent rows | |
9782 | refer to that section. The section identifiers are: | |
9783 | ||
9784 | DW_SECT_INFO 1 .debug_info.dwo | |
9785 | DW_SECT_TYPES 2 .debug_types.dwo | |
9786 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
9787 | DW_SECT_LINE 4 .debug_line.dwo | |
9788 | DW_SECT_LOC 5 .debug_loc.dwo | |
9789 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
9790 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
9791 | DW_SECT_MACRO 8 .debug_macro.dwo | |
9792 | ||
9793 | The offsets provided by the CU and TU index sections are the base offsets | |
9794 | for the contributions made by each CU or TU to the corresponding section | |
9795 | in the package file. Each CU and TU header contains an abbrev_offset | |
9796 | field, used to find the abbreviations table for that CU or TU within the | |
9797 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
9798 | be interpreted as relative to the base offset given in the index section. | |
9799 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
9800 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
9801 | and offsets into other debug sections obtained from DWARF attributes should | |
9802 | also be interpreted as relative to the corresponding base offset. | |
9803 | ||
9804 | The table of sizes begins immediately following the table of offsets. | |
9805 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
9806 | with L columns and N rows, in row-major order. Each row in the array is | |
9807 | indexed starting from 1 (row 0 is shared by the two tables). | |
9808 | ||
9809 | --- | |
9810 | ||
9811 | Hash table lookup is handled the same in version 1 and 2: | |
9812 | ||
9813 | We assume that N and M will not exceed 2^32 - 1. | |
9814 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
9815 | ||
d2415c6c DE |
9816 | Given a 64-bit compilation unit signature or a type signature S, an entry |
9817 | in the hash table is located as follows: | |
80626a55 | 9818 | |
d2415c6c DE |
9819 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
9820 | the low-order k bits all set to 1. | |
80626a55 | 9821 | |
d2415c6c | 9822 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 9823 | |
d2415c6c DE |
9824 | 3) If the hash table entry at index H matches the signature, use that |
9825 | entry. If the hash table entry at index H is unused (all zeroes), | |
9826 | terminate the search: the signature is not present in the table. | |
80626a55 | 9827 | |
d2415c6c | 9828 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 9829 | |
d2415c6c | 9830 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 9831 | to stop at an unused slot or find the match. */ |
80626a55 DE |
9832 | |
9833 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
9834 | .debug_{info,types}.dwo in DWP_FILE. | |
9835 | Returns NULL if there isn't one. | |
9836 | Note: This function processes DWP files only, not DWO files. */ | |
9837 | ||
9838 | static struct dwp_hash_table * | |
9839 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
9840 | { | |
9841 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9842 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 9843 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 9844 | struct dwarf2_section_info *index; |
73869dc2 | 9845 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
9846 | struct dwp_hash_table *htab; |
9847 | ||
9848 | if (is_debug_types) | |
9849 | index = &dwp_file->sections.tu_index; | |
9850 | else | |
9851 | index = &dwp_file->sections.cu_index; | |
9852 | ||
9853 | if (dwarf2_section_empty_p (index)) | |
9854 | return NULL; | |
9855 | dwarf2_read_section (objfile, index); | |
9856 | ||
9857 | index_ptr = index->buffer; | |
9858 | index_end = index_ptr + index->size; | |
9859 | ||
9860 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
9861 | index_ptr += 4; |
9862 | if (version == 2) | |
9863 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
9864 | else | |
9865 | nr_columns = 0; | |
9866 | index_ptr += 4; | |
80626a55 DE |
9867 | nr_units = read_4_bytes (dbfd, index_ptr); |
9868 | index_ptr += 4; | |
9869 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
9870 | index_ptr += 4; | |
9871 | ||
73869dc2 | 9872 | if (version != 1 && version != 2) |
80626a55 | 9873 | { |
21aa081e | 9874 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 9875 | " [in module %s]"), |
21aa081e | 9876 | pulongest (version), dwp_file->name); |
80626a55 DE |
9877 | } |
9878 | if (nr_slots != (nr_slots & -nr_slots)) | |
9879 | { | |
21aa081e | 9880 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 9881 | " is not power of 2 [in module %s]"), |
21aa081e | 9882 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
9883 | } |
9884 | ||
9885 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
9886 | htab->version = version; |
9887 | htab->nr_columns = nr_columns; | |
80626a55 DE |
9888 | htab->nr_units = nr_units; |
9889 | htab->nr_slots = nr_slots; | |
9890 | htab->hash_table = index_ptr; | |
9891 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
9892 | |
9893 | /* Exit early if the table is empty. */ | |
9894 | if (nr_slots == 0 || nr_units == 0 | |
9895 | || (version == 2 && nr_columns == 0)) | |
9896 | { | |
9897 | /* All must be zero. */ | |
9898 | if (nr_slots != 0 || nr_units != 0 | |
9899 | || (version == 2 && nr_columns != 0)) | |
9900 | { | |
9901 | complaint (&symfile_complaints, | |
9902 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
9903 | " all zero [in modules %s]"), | |
9904 | dwp_file->name); | |
9905 | } | |
9906 | return htab; | |
9907 | } | |
9908 | ||
9909 | if (version == 1) | |
9910 | { | |
9911 | htab->section_pool.v1.indices = | |
9912 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9913 | /* It's harder to decide whether the section is too small in v1. | |
9914 | V1 is deprecated anyway so we punt. */ | |
9915 | } | |
9916 | else | |
9917 | { | |
9918 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9919 | int *ids = htab->section_pool.v2.section_ids; | |
9920 | /* Reverse map for error checking. */ | |
9921 | int ids_seen[DW_SECT_MAX + 1]; | |
9922 | int i; | |
9923 | ||
9924 | if (nr_columns < 2) | |
9925 | { | |
9926 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
9927 | " in section table [in module %s]"), | |
9928 | dwp_file->name); | |
9929 | } | |
9930 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
9931 | { | |
9932 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
9933 | " in section table [in module %s]"), | |
9934 | dwp_file->name); | |
9935 | } | |
9936 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9937 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9938 | for (i = 0; i < nr_columns; ++i) | |
9939 | { | |
9940 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
9941 | ||
9942 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
9943 | { | |
9944 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
9945 | " in section table [in module %s]"), | |
9946 | id, dwp_file->name); | |
9947 | } | |
9948 | if (ids_seen[id] != -1) | |
9949 | { | |
9950 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
9951 | " id %d in section table [in module %s]"), | |
9952 | id, dwp_file->name); | |
9953 | } | |
9954 | ids_seen[id] = i; | |
9955 | ids[i] = id; | |
9956 | } | |
9957 | /* Must have exactly one info or types section. */ | |
9958 | if (((ids_seen[DW_SECT_INFO] != -1) | |
9959 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
9960 | != 1) | |
9961 | { | |
9962 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
9963 | " DWO info/types section [in module %s]"), | |
9964 | dwp_file->name); | |
9965 | } | |
9966 | /* Must have an abbrev section. */ | |
9967 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
9968 | { | |
9969 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
9970 | " section [in module %s]"), | |
9971 | dwp_file->name); | |
9972 | } | |
9973 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
9974 | htab->section_pool.v2.sizes = | |
9975 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
9976 | * nr_units * nr_columns); | |
9977 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
9978 | * nr_units * nr_columns)) | |
9979 | > index_end) | |
9980 | { | |
9981 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
9982 | " [in module %s]"), | |
9983 | dwp_file->name); | |
9984 | } | |
9985 | } | |
80626a55 DE |
9986 | |
9987 | return htab; | |
9988 | } | |
9989 | ||
9990 | /* Update SECTIONS with the data from SECTP. | |
9991 | ||
9992 | This function is like the other "locate" section routines that are | |
9993 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 9994 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
9995 | |
9996 | The result is non-zero for success, or zero if an error was found. */ | |
9997 | ||
9998 | static int | |
73869dc2 DE |
9999 | locate_v1_virtual_dwo_sections (asection *sectp, |
10000 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
10001 | { |
10002 | const struct dwop_section_names *names = &dwop_section_names; | |
10003 | ||
10004 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10005 | { | |
10006 | /* There can be only one. */ | |
049412e3 | 10007 | if (sections->abbrev.s.section != NULL) |
80626a55 | 10008 | return 0; |
049412e3 | 10009 | sections->abbrev.s.section = sectp; |
80626a55 DE |
10010 | sections->abbrev.size = bfd_get_section_size (sectp); |
10011 | } | |
10012 | else if (section_is_p (sectp->name, &names->info_dwo) | |
10013 | || section_is_p (sectp->name, &names->types_dwo)) | |
10014 | { | |
10015 | /* There can be only one. */ | |
049412e3 | 10016 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 10017 | return 0; |
049412e3 | 10018 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
10019 | sections->info_or_types.size = bfd_get_section_size (sectp); |
10020 | } | |
10021 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10022 | { | |
10023 | /* There can be only one. */ | |
049412e3 | 10024 | if (sections->line.s.section != NULL) |
80626a55 | 10025 | return 0; |
049412e3 | 10026 | sections->line.s.section = sectp; |
80626a55 DE |
10027 | sections->line.size = bfd_get_section_size (sectp); |
10028 | } | |
10029 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10030 | { | |
10031 | /* There can be only one. */ | |
049412e3 | 10032 | if (sections->loc.s.section != NULL) |
80626a55 | 10033 | return 0; |
049412e3 | 10034 | sections->loc.s.section = sectp; |
80626a55 DE |
10035 | sections->loc.size = bfd_get_section_size (sectp); |
10036 | } | |
10037 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10038 | { | |
10039 | /* There can be only one. */ | |
049412e3 | 10040 | if (sections->macinfo.s.section != NULL) |
80626a55 | 10041 | return 0; |
049412e3 | 10042 | sections->macinfo.s.section = sectp; |
80626a55 DE |
10043 | sections->macinfo.size = bfd_get_section_size (sectp); |
10044 | } | |
10045 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10046 | { | |
10047 | /* There can be only one. */ | |
049412e3 | 10048 | if (sections->macro.s.section != NULL) |
80626a55 | 10049 | return 0; |
049412e3 | 10050 | sections->macro.s.section = sectp; |
80626a55 DE |
10051 | sections->macro.size = bfd_get_section_size (sectp); |
10052 | } | |
10053 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10054 | { | |
10055 | /* There can be only one. */ | |
049412e3 | 10056 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 10057 | return 0; |
049412e3 | 10058 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
10059 | sections->str_offsets.size = bfd_get_section_size (sectp); |
10060 | } | |
10061 | else | |
10062 | { | |
10063 | /* No other kind of section is valid. */ | |
10064 | return 0; | |
10065 | } | |
10066 | ||
10067 | return 1; | |
10068 | } | |
10069 | ||
73869dc2 DE |
10070 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
10071 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
10072 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
10073 | This is for DWP version 1 files. */ | |
80626a55 DE |
10074 | |
10075 | static struct dwo_unit * | |
73869dc2 DE |
10076 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
10077 | uint32_t unit_index, | |
10078 | const char *comp_dir, | |
10079 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
10080 | { |
10081 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
10082 | const struct dwp_hash_table *dwp_htab = |
10083 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
10084 | bfd *dbfd = dwp_file->dbfd; |
10085 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10086 | struct dwo_file *dwo_file; | |
10087 | struct dwo_unit *dwo_unit; | |
73869dc2 | 10088 | struct virtual_v1_dwo_sections sections; |
80626a55 DE |
10089 | void **dwo_file_slot; |
10090 | char *virtual_dwo_name; | |
80626a55 DE |
10091 | struct cleanup *cleanups; |
10092 | int i; | |
10093 | ||
73869dc2 DE |
10094 | gdb_assert (dwp_file->version == 1); |
10095 | ||
b4f54984 | 10096 | if (dwarf_read_debug) |
80626a55 | 10097 | { |
73869dc2 | 10098 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 10099 | kind, |
73869dc2 | 10100 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
10101 | dwp_file->name); |
10102 | } | |
10103 | ||
19ac8c2e | 10104 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
10105 | Put a limit on the number of sections we look for so that bad data |
10106 | doesn't cause us to loop forever. */ | |
10107 | ||
73869dc2 | 10108 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
10109 | (1 /* .debug_info or .debug_types */ \ |
10110 | + 1 /* .debug_abbrev */ \ | |
10111 | + 1 /* .debug_line */ \ | |
10112 | + 1 /* .debug_loc */ \ | |
10113 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 10114 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
10115 | + 1 /* trailing zero */) |
10116 | ||
10117 | memset (§ions, 0, sizeof (sections)); | |
10118 | cleanups = make_cleanup (null_cleanup, 0); | |
10119 | ||
73869dc2 | 10120 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
10121 | { |
10122 | asection *sectp; | |
10123 | uint32_t section_nr = | |
10124 | read_4_bytes (dbfd, | |
73869dc2 DE |
10125 | dwp_htab->section_pool.v1.indices |
10126 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
10127 | |
10128 | if (section_nr == 0) | |
10129 | break; | |
10130 | if (section_nr >= dwp_file->num_sections) | |
10131 | { | |
10132 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
10133 | " [in module %s]"), | |
10134 | dwp_file->name); | |
10135 | } | |
10136 | ||
10137 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 10138 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
10139 | { |
10140 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
10141 | " [in module %s]"), | |
10142 | dwp_file->name); | |
10143 | } | |
10144 | } | |
10145 | ||
10146 | if (i < 2 | |
a32a8923 DE |
10147 | || dwarf2_section_empty_p (§ions.info_or_types) |
10148 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
10149 | { |
10150 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
10151 | " [in module %s]"), | |
10152 | dwp_file->name); | |
10153 | } | |
73869dc2 | 10154 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
10155 | { |
10156 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
10157 | " [in module %s]"), | |
10158 | dwp_file->name); | |
10159 | } | |
10160 | ||
10161 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10162 | have dwo_unit "live" in that. At least for now. | |
10163 | ||
10164 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 10165 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
10166 | file, we can combine them back into a virtual DWO file to save space |
10167 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
10168 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
10169 | ||
2792b94d PM |
10170 | virtual_dwo_name = |
10171 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
a32a8923 DE |
10172 | get_section_id (§ions.abbrev), |
10173 | get_section_id (§ions.line), | |
10174 | get_section_id (§ions.loc), | |
10175 | get_section_id (§ions.str_offsets)); | |
80626a55 DE |
10176 | make_cleanup (xfree, virtual_dwo_name); |
10177 | /* Can we use an existing virtual DWO file? */ | |
0ac5b59e | 10178 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); |
80626a55 DE |
10179 | /* Create one if necessary. */ |
10180 | if (*dwo_file_slot == NULL) | |
10181 | { | |
b4f54984 | 10182 | if (dwarf_read_debug) |
80626a55 DE |
10183 | { |
10184 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10185 | virtual_dwo_name); | |
10186 | } | |
10187 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
10188 | dwo_file->dwo_name |
10189 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10190 | virtual_dwo_name, | |
10191 | strlen (virtual_dwo_name)); | |
0ac5b59e | 10192 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
10193 | dwo_file->sections.abbrev = sections.abbrev; |
10194 | dwo_file->sections.line = sections.line; | |
10195 | dwo_file->sections.loc = sections.loc; | |
10196 | dwo_file->sections.macinfo = sections.macinfo; | |
10197 | dwo_file->sections.macro = sections.macro; | |
10198 | dwo_file->sections.str_offsets = sections.str_offsets; | |
10199 | /* The "str" section is global to the entire DWP file. */ | |
10200 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 10201 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
10202 | there's no need to record it in dwo_file. |
10203 | Also, we can't simply record type sections in dwo_file because | |
10204 | we record a pointer into the vector in dwo_unit. As we collect more | |
10205 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
10206 | for it, invalidating all copies of pointers into the previous |
10207 | contents. */ | |
80626a55 DE |
10208 | *dwo_file_slot = dwo_file; |
10209 | } | |
10210 | else | |
10211 | { | |
b4f54984 | 10212 | if (dwarf_read_debug) |
80626a55 DE |
10213 | { |
10214 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10215 | virtual_dwo_name); | |
10216 | } | |
9a3c8263 | 10217 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 DE |
10218 | } |
10219 | do_cleanups (cleanups); | |
10220 | ||
10221 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10222 | dwo_unit->dwo_file = dwo_file; | |
10223 | dwo_unit->signature = signature; | |
8d749320 SM |
10224 | dwo_unit->section = |
10225 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 10226 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 10227 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
10228 | |
10229 | return dwo_unit; | |
10230 | } | |
10231 | ||
73869dc2 DE |
10232 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
10233 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
10234 | piece within that section used by a TU/CU, return a virtual section | |
10235 | of just that piece. */ | |
10236 | ||
10237 | static struct dwarf2_section_info | |
10238 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
10239 | bfd_size_type offset, bfd_size_type size) | |
10240 | { | |
10241 | struct dwarf2_section_info result; | |
10242 | asection *sectp; | |
10243 | ||
10244 | gdb_assert (section != NULL); | |
10245 | gdb_assert (!section->is_virtual); | |
10246 | ||
10247 | memset (&result, 0, sizeof (result)); | |
10248 | result.s.containing_section = section; | |
10249 | result.is_virtual = 1; | |
10250 | ||
10251 | if (size == 0) | |
10252 | return result; | |
10253 | ||
10254 | sectp = get_section_bfd_section (section); | |
10255 | ||
10256 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
10257 | bounds of the real section. This is a pretty-rare event, so just | |
10258 | flag an error (easier) instead of a warning and trying to cope. */ | |
10259 | if (sectp == NULL | |
10260 | || offset + size > bfd_get_section_size (sectp)) | |
10261 | { | |
10262 | bfd *abfd = sectp->owner; | |
10263 | ||
10264 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" | |
10265 | " in section %s [in module %s]"), | |
10266 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
10267 | objfile_name (dwarf2_per_objfile->objfile)); | |
10268 | } | |
10269 | ||
10270 | result.virtual_offset = offset; | |
10271 | result.size = size; | |
10272 | return result; | |
10273 | } | |
10274 | ||
10275 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
10276 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
10277 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
10278 | This is for DWP version 2 files. */ | |
10279 | ||
10280 | static struct dwo_unit * | |
10281 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
10282 | uint32_t unit_index, | |
10283 | const char *comp_dir, | |
10284 | ULONGEST signature, int is_debug_types) | |
10285 | { | |
10286 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10287 | const struct dwp_hash_table *dwp_htab = | |
10288 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10289 | bfd *dbfd = dwp_file->dbfd; | |
10290 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10291 | struct dwo_file *dwo_file; | |
10292 | struct dwo_unit *dwo_unit; | |
10293 | struct virtual_v2_dwo_sections sections; | |
10294 | void **dwo_file_slot; | |
10295 | char *virtual_dwo_name; | |
73869dc2 DE |
10296 | struct cleanup *cleanups; |
10297 | int i; | |
10298 | ||
10299 | gdb_assert (dwp_file->version == 2); | |
10300 | ||
b4f54984 | 10301 | if (dwarf_read_debug) |
73869dc2 DE |
10302 | { |
10303 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
10304 | kind, | |
10305 | pulongest (unit_index), hex_string (signature), | |
10306 | dwp_file->name); | |
10307 | } | |
10308 | ||
10309 | /* Fetch the section offsets of this DWO unit. */ | |
10310 | ||
10311 | memset (§ions, 0, sizeof (sections)); | |
10312 | cleanups = make_cleanup (null_cleanup, 0); | |
10313 | ||
10314 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
10315 | { | |
10316 | uint32_t offset = read_4_bytes (dbfd, | |
10317 | dwp_htab->section_pool.v2.offsets | |
10318 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10319 | + i) | |
10320 | * sizeof (uint32_t))); | |
10321 | uint32_t size = read_4_bytes (dbfd, | |
10322 | dwp_htab->section_pool.v2.sizes | |
10323 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10324 | + i) | |
10325 | * sizeof (uint32_t))); | |
10326 | ||
10327 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
10328 | { | |
10329 | case DW_SECT_INFO: | |
10330 | case DW_SECT_TYPES: | |
10331 | sections.info_or_types_offset = offset; | |
10332 | sections.info_or_types_size = size; | |
10333 | break; | |
10334 | case DW_SECT_ABBREV: | |
10335 | sections.abbrev_offset = offset; | |
10336 | sections.abbrev_size = size; | |
10337 | break; | |
10338 | case DW_SECT_LINE: | |
10339 | sections.line_offset = offset; | |
10340 | sections.line_size = size; | |
10341 | break; | |
10342 | case DW_SECT_LOC: | |
10343 | sections.loc_offset = offset; | |
10344 | sections.loc_size = size; | |
10345 | break; | |
10346 | case DW_SECT_STR_OFFSETS: | |
10347 | sections.str_offsets_offset = offset; | |
10348 | sections.str_offsets_size = size; | |
10349 | break; | |
10350 | case DW_SECT_MACINFO: | |
10351 | sections.macinfo_offset = offset; | |
10352 | sections.macinfo_size = size; | |
10353 | break; | |
10354 | case DW_SECT_MACRO: | |
10355 | sections.macro_offset = offset; | |
10356 | sections.macro_size = size; | |
10357 | break; | |
10358 | } | |
10359 | } | |
10360 | ||
10361 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10362 | have dwo_unit "live" in that. At least for now. | |
10363 | ||
10364 | The DWP file can be made up of a random collection of CUs and TUs. | |
10365 | However, for each CU + set of TUs that came from the same original DWO | |
10366 | file, we can combine them back into a virtual DWO file to save space | |
10367 | (fewer struct dwo_file objects to allocate). Remember that for really | |
10368 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
10369 | ||
10370 | virtual_dwo_name = | |
10371 | xstrprintf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
10372 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
10373 | (long) (sections.line_size ? sections.line_offset : 0), | |
10374 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
10375 | (long) (sections.str_offsets_size | |
10376 | ? sections.str_offsets_offset : 0)); | |
10377 | make_cleanup (xfree, virtual_dwo_name); | |
10378 | /* Can we use an existing virtual DWO file? */ | |
10379 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); | |
10380 | /* Create one if necessary. */ | |
10381 | if (*dwo_file_slot == NULL) | |
10382 | { | |
b4f54984 | 10383 | if (dwarf_read_debug) |
73869dc2 DE |
10384 | { |
10385 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10386 | virtual_dwo_name); | |
10387 | } | |
10388 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
10389 | dwo_file->dwo_name |
10390 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10391 | virtual_dwo_name, | |
10392 | strlen (virtual_dwo_name)); | |
73869dc2 DE |
10393 | dwo_file->comp_dir = comp_dir; |
10394 | dwo_file->sections.abbrev = | |
10395 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
10396 | sections.abbrev_offset, sections.abbrev_size); | |
10397 | dwo_file->sections.line = | |
10398 | create_dwp_v2_section (&dwp_file->sections.line, | |
10399 | sections.line_offset, sections.line_size); | |
10400 | dwo_file->sections.loc = | |
10401 | create_dwp_v2_section (&dwp_file->sections.loc, | |
10402 | sections.loc_offset, sections.loc_size); | |
10403 | dwo_file->sections.macinfo = | |
10404 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
10405 | sections.macinfo_offset, sections.macinfo_size); | |
10406 | dwo_file->sections.macro = | |
10407 | create_dwp_v2_section (&dwp_file->sections.macro, | |
10408 | sections.macro_offset, sections.macro_size); | |
10409 | dwo_file->sections.str_offsets = | |
10410 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
10411 | sections.str_offsets_offset, | |
10412 | sections.str_offsets_size); | |
10413 | /* The "str" section is global to the entire DWP file. */ | |
10414 | dwo_file->sections.str = dwp_file->sections.str; | |
10415 | /* The info or types section is assigned below to dwo_unit, | |
10416 | there's no need to record it in dwo_file. | |
10417 | Also, we can't simply record type sections in dwo_file because | |
10418 | we record a pointer into the vector in dwo_unit. As we collect more | |
10419 | types we'll grow the vector and eventually have to reallocate space | |
10420 | for it, invalidating all copies of pointers into the previous | |
10421 | contents. */ | |
10422 | *dwo_file_slot = dwo_file; | |
10423 | } | |
10424 | else | |
10425 | { | |
b4f54984 | 10426 | if (dwarf_read_debug) |
73869dc2 DE |
10427 | { |
10428 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10429 | virtual_dwo_name); | |
10430 | } | |
9a3c8263 | 10431 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 DE |
10432 | } |
10433 | do_cleanups (cleanups); | |
10434 | ||
10435 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10436 | dwo_unit->dwo_file = dwo_file; | |
10437 | dwo_unit->signature = signature; | |
8d749320 SM |
10438 | dwo_unit->section = |
10439 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
73869dc2 DE |
10440 | *dwo_unit->section = create_dwp_v2_section (is_debug_types |
10441 | ? &dwp_file->sections.types | |
10442 | : &dwp_file->sections.info, | |
10443 | sections.info_or_types_offset, | |
10444 | sections.info_or_types_size); | |
10445 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
10446 | ||
10447 | return dwo_unit; | |
10448 | } | |
10449 | ||
57d63ce2 DE |
10450 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
10451 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
10452 | |
10453 | static struct dwo_unit * | |
57d63ce2 DE |
10454 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
10455 | ULONGEST signature, int is_debug_types) | |
80626a55 | 10456 | { |
57d63ce2 DE |
10457 | const struct dwp_hash_table *dwp_htab = |
10458 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 10459 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 10460 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
10461 | uint32_t hash = signature & mask; |
10462 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
10463 | unsigned int i; | |
10464 | void **slot; | |
870f88f7 | 10465 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
10466 | |
10467 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
10468 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
10469 | slot = htab_find_slot (is_debug_types |
10470 | ? dwp_file->loaded_tus | |
10471 | : dwp_file->loaded_cus, | |
10472 | &find_dwo_cu, INSERT); | |
80626a55 DE |
10473 | |
10474 | if (*slot != NULL) | |
9a3c8263 | 10475 | return (struct dwo_unit *) *slot; |
80626a55 DE |
10476 | |
10477 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 10478 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
10479 | { |
10480 | ULONGEST signature_in_table; | |
10481 | ||
10482 | signature_in_table = | |
57d63ce2 | 10483 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
10484 | if (signature_in_table == signature) |
10485 | { | |
57d63ce2 DE |
10486 | uint32_t unit_index = |
10487 | read_4_bytes (dbfd, | |
10488 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 10489 | |
73869dc2 DE |
10490 | if (dwp_file->version == 1) |
10491 | { | |
10492 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
10493 | comp_dir, signature, | |
10494 | is_debug_types); | |
10495 | } | |
10496 | else | |
10497 | { | |
10498 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
10499 | comp_dir, signature, | |
10500 | is_debug_types); | |
10501 | } | |
9a3c8263 | 10502 | return (struct dwo_unit *) *slot; |
80626a55 DE |
10503 | } |
10504 | if (signature_in_table == 0) | |
10505 | return NULL; | |
10506 | hash = (hash + hash2) & mask; | |
10507 | } | |
10508 | ||
10509 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
10510 | " [in module %s]"), | |
10511 | dwp_file->name); | |
10512 | } | |
10513 | ||
ab5088bf | 10514 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
10515 | Open the file specified by FILE_NAME and hand it off to BFD for |
10516 | preliminary analysis. Return a newly initialized bfd *, which | |
10517 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 10518 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
10519 | SEARCH_CWD is true if the current directory is to be searched. |
10520 | It will be searched before debug-file-directory. | |
13aaf454 DE |
10521 | If successful, the file is added to the bfd include table of the |
10522 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 10523 | If unable to find/open the file, return NULL. |
3019eac3 DE |
10524 | NOTE: This function is derived from symfile_bfd_open. */ |
10525 | ||
192b62ce | 10526 | static gdb_bfd_ref_ptr |
6ac97d4c | 10527 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 10528 | { |
80626a55 | 10529 | int desc, flags; |
3019eac3 | 10530 | char *absolute_name; |
9c02c129 DE |
10531 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
10532 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
10533 | to debug_file_directory. */ | |
10534 | char *search_path; | |
10535 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
10536 | ||
6ac97d4c DE |
10537 | if (search_cwd) |
10538 | { | |
10539 | if (*debug_file_directory != '\0') | |
10540 | search_path = concat (".", dirname_separator_string, | |
b36cec19 | 10541 | debug_file_directory, (char *) NULL); |
6ac97d4c DE |
10542 | else |
10543 | search_path = xstrdup ("."); | |
10544 | } | |
9c02c129 | 10545 | else |
6ac97d4c | 10546 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 10547 | |
492c0ab7 | 10548 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
10549 | if (is_dwp) |
10550 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 10551 | desc = openp (search_path, flags, file_name, |
3019eac3 | 10552 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 10553 | xfree (search_path); |
3019eac3 DE |
10554 | if (desc < 0) |
10555 | return NULL; | |
10556 | ||
192b62ce | 10557 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name, gnutarget, desc)); |
a4453b7e | 10558 | xfree (absolute_name); |
9c02c129 DE |
10559 | if (sym_bfd == NULL) |
10560 | return NULL; | |
192b62ce | 10561 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 10562 | |
192b62ce TT |
10563 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
10564 | return NULL; | |
3019eac3 | 10565 | |
13aaf454 DE |
10566 | /* Success. Record the bfd as having been included by the objfile's bfd. |
10567 | This is important because things like demangled_names_hash lives in the | |
10568 | objfile's per_bfd space and may have references to things like symbol | |
10569 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 10570 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 10571 | |
3019eac3 DE |
10572 | return sym_bfd; |
10573 | } | |
10574 | ||
ab5088bf | 10575 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
10576 | COMP_DIR is the DW_AT_comp_dir attribute. |
10577 | The result is the bfd handle of the file. | |
10578 | If there is a problem finding or opening the file, return NULL. | |
10579 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10580 | same as symfile_bfd_open. */ | |
10581 | ||
192b62ce | 10582 | static gdb_bfd_ref_ptr |
ab5088bf | 10583 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 | 10584 | { |
80626a55 | 10585 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 10586 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
10587 | |
10588 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
10589 | ||
10590 | if (comp_dir != NULL) | |
10591 | { | |
b36cec19 PA |
10592 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
10593 | file_name, (char *) NULL); | |
3019eac3 DE |
10594 | |
10595 | /* NOTE: If comp_dir is a relative path, this will also try the | |
10596 | search path, which seems useful. */ | |
192b62ce TT |
10597 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (path_to_try, 0 /*is_dwp*/, |
10598 | 1 /*search_cwd*/)); | |
3019eac3 DE |
10599 | xfree (path_to_try); |
10600 | if (abfd != NULL) | |
10601 | return abfd; | |
10602 | } | |
10603 | ||
10604 | /* That didn't work, try debug-file-directory, which, despite its name, | |
10605 | is a list of paths. */ | |
10606 | ||
10607 | if (*debug_file_directory == '\0') | |
10608 | return NULL; | |
10609 | ||
6ac97d4c | 10610 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10611 | } |
10612 | ||
80626a55 DE |
10613 | /* This function is mapped across the sections and remembers the offset and |
10614 | size of each of the DWO debugging sections we are interested in. */ | |
10615 | ||
10616 | static void | |
10617 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
10618 | { | |
9a3c8263 | 10619 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
10620 | const struct dwop_section_names *names = &dwop_section_names; |
10621 | ||
10622 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10623 | { | |
049412e3 | 10624 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
10625 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
10626 | } | |
10627 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10628 | { | |
049412e3 | 10629 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
10630 | dwo_sections->info.size = bfd_get_section_size (sectp); |
10631 | } | |
10632 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10633 | { | |
049412e3 | 10634 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
10635 | dwo_sections->line.size = bfd_get_section_size (sectp); |
10636 | } | |
10637 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10638 | { | |
049412e3 | 10639 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
10640 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
10641 | } | |
10642 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10643 | { | |
049412e3 | 10644 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
10645 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
10646 | } | |
10647 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10648 | { | |
049412e3 | 10649 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
10650 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
10651 | } | |
10652 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
10653 | { | |
049412e3 | 10654 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
10655 | dwo_sections->str.size = bfd_get_section_size (sectp); |
10656 | } | |
10657 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10658 | { | |
049412e3 | 10659 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
10660 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
10661 | } | |
10662 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10663 | { | |
10664 | struct dwarf2_section_info type_section; | |
10665 | ||
10666 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 10667 | type_section.s.section = sectp; |
80626a55 DE |
10668 | type_section.size = bfd_get_section_size (sectp); |
10669 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
10670 | &type_section); | |
10671 | } | |
10672 | } | |
10673 | ||
ab5088bf | 10674 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 10675 | by PER_CU. This is for the non-DWP case. |
80626a55 | 10676 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
10677 | |
10678 | static struct dwo_file * | |
0ac5b59e DE |
10679 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
10680 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
10681 | { |
10682 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 10683 | struct dwo_file *dwo_file; |
3019eac3 DE |
10684 | struct cleanup *cleanups; |
10685 | ||
192b62ce | 10686 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwo_name, comp_dir)); |
80626a55 DE |
10687 | if (dbfd == NULL) |
10688 | { | |
b4f54984 | 10689 | if (dwarf_read_debug) |
80626a55 DE |
10690 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
10691 | return NULL; | |
10692 | } | |
10693 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10694 | dwo_file->dwo_name = dwo_name; |
10695 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 10696 | dwo_file->dbfd = dbfd.release (); |
3019eac3 DE |
10697 | |
10698 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
10699 | ||
192b62ce TT |
10700 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
10701 | &dwo_file->sections); | |
3019eac3 | 10702 | |
19c3d4c9 | 10703 | dwo_file->cu = create_dwo_cu (dwo_file); |
3019eac3 | 10704 | |
78d4d2c5 JK |
10705 | create_debug_types_hash_table (dwo_file, dwo_file->sections.types, |
10706 | dwo_file->tus); | |
3019eac3 DE |
10707 | |
10708 | discard_cleanups (cleanups); | |
10709 | ||
b4f54984 | 10710 | if (dwarf_read_debug) |
80626a55 DE |
10711 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
10712 | ||
3019eac3 DE |
10713 | return dwo_file; |
10714 | } | |
10715 | ||
80626a55 | 10716 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
10717 | size of each of the DWP debugging sections common to version 1 and 2 that |
10718 | we are interested in. */ | |
3019eac3 | 10719 | |
80626a55 | 10720 | static void |
73869dc2 DE |
10721 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
10722 | void *dwp_file_ptr) | |
3019eac3 | 10723 | { |
9a3c8263 | 10724 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
10725 | const struct dwop_section_names *names = &dwop_section_names; |
10726 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 10727 | |
80626a55 | 10728 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 10729 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
10730 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
10731 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 10732 | |
80626a55 DE |
10733 | /* Look for specific sections that we need. */ |
10734 | if (section_is_p (sectp->name, &names->str_dwo)) | |
10735 | { | |
049412e3 | 10736 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
10737 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
10738 | } | |
10739 | else if (section_is_p (sectp->name, &names->cu_index)) | |
10740 | { | |
049412e3 | 10741 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
10742 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
10743 | } | |
10744 | else if (section_is_p (sectp->name, &names->tu_index)) | |
10745 | { | |
049412e3 | 10746 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
10747 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
10748 | } | |
10749 | } | |
3019eac3 | 10750 | |
73869dc2 DE |
10751 | /* This function is mapped across the sections and remembers the offset and |
10752 | size of each of the DWP version 2 debugging sections that we are interested | |
10753 | in. This is split into a separate function because we don't know if we | |
10754 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
10755 | ||
10756 | static void | |
10757 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
10758 | { | |
9a3c8263 | 10759 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
10760 | const struct dwop_section_names *names = &dwop_section_names; |
10761 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
10762 | ||
10763 | /* Record the ELF section number for later lookup: this is what the | |
10764 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
10765 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
10766 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
10767 | ||
10768 | /* Look for specific sections that we need. */ | |
10769 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10770 | { | |
049412e3 | 10771 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
10772 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
10773 | } | |
10774 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10775 | { | |
049412e3 | 10776 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
10777 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
10778 | } | |
10779 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10780 | { | |
049412e3 | 10781 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
10782 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
10783 | } | |
10784 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10785 | { | |
049412e3 | 10786 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
10787 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
10788 | } | |
10789 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10790 | { | |
049412e3 | 10791 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
10792 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
10793 | } | |
10794 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10795 | { | |
049412e3 | 10796 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
10797 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
10798 | } | |
10799 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10800 | { | |
049412e3 | 10801 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
10802 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
10803 | } | |
10804 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10805 | { | |
049412e3 | 10806 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
10807 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
10808 | } | |
10809 | } | |
10810 | ||
80626a55 | 10811 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10812 | |
80626a55 DE |
10813 | static hashval_t |
10814 | hash_dwp_loaded_cutus (const void *item) | |
10815 | { | |
9a3c8263 | 10816 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 10817 | |
80626a55 DE |
10818 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
10819 | return dwo_unit->signature; | |
3019eac3 DE |
10820 | } |
10821 | ||
80626a55 | 10822 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10823 | |
80626a55 DE |
10824 | static int |
10825 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 10826 | { |
9a3c8263 SM |
10827 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
10828 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 10829 | |
80626a55 DE |
10830 | return dua->signature == dub->signature; |
10831 | } | |
3019eac3 | 10832 | |
80626a55 | 10833 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10834 | |
80626a55 DE |
10835 | static htab_t |
10836 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
10837 | { | |
10838 | return htab_create_alloc_ex (3, | |
10839 | hash_dwp_loaded_cutus, | |
10840 | eq_dwp_loaded_cutus, | |
10841 | NULL, | |
10842 | &objfile->objfile_obstack, | |
10843 | hashtab_obstack_allocate, | |
10844 | dummy_obstack_deallocate); | |
10845 | } | |
3019eac3 | 10846 | |
ab5088bf DE |
10847 | /* Try to open DWP file FILE_NAME. |
10848 | The result is the bfd handle of the file. | |
10849 | If there is a problem finding or opening the file, return NULL. | |
10850 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10851 | same as symfile_bfd_open. */ | |
10852 | ||
192b62ce | 10853 | static gdb_bfd_ref_ptr |
ab5088bf DE |
10854 | open_dwp_file (const char *file_name) |
10855 | { | |
192b62ce TT |
10856 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (file_name, 1 /*is_dwp*/, |
10857 | 1 /*search_cwd*/)); | |
6ac97d4c DE |
10858 | if (abfd != NULL) |
10859 | return abfd; | |
10860 | ||
10861 | /* Work around upstream bug 15652. | |
10862 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
10863 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
10864 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
10865 | of the executable's path may have discarded the needed info. | |
10866 | [IWBN if the dwp file name was recorded in the executable, akin to | |
10867 | .gnu_debuglink, but that doesn't exist yet.] | |
10868 | Strip the directory from FILE_NAME and search again. */ | |
10869 | if (*debug_file_directory != '\0') | |
10870 | { | |
10871 | /* Don't implicitly search the current directory here. | |
10872 | If the user wants to search "." to handle this case, | |
10873 | it must be added to debug-file-directory. */ | |
10874 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
10875 | 0 /*search_cwd*/); | |
10876 | } | |
10877 | ||
10878 | return NULL; | |
ab5088bf DE |
10879 | } |
10880 | ||
80626a55 DE |
10881 | /* Initialize the use of the DWP file for the current objfile. |
10882 | By convention the name of the DWP file is ${objfile}.dwp. | |
10883 | The result is NULL if it can't be found. */ | |
a766d390 | 10884 | |
80626a55 | 10885 | static struct dwp_file * |
ab5088bf | 10886 | open_and_init_dwp_file (void) |
80626a55 DE |
10887 | { |
10888 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10889 | struct dwp_file *dwp_file; | |
10890 | char *dwp_name; | |
6c447423 | 10891 | struct cleanup *cleanups = make_cleanup (null_cleanup, 0); |
80626a55 | 10892 | |
82bf32bc JK |
10893 | /* Try to find first .dwp for the binary file before any symbolic links |
10894 | resolving. */ | |
6c447423 DE |
10895 | |
10896 | /* If the objfile is a debug file, find the name of the real binary | |
10897 | file and get the name of dwp file from there. */ | |
10898 | if (objfile->separate_debug_objfile_backlink != NULL) | |
10899 | { | |
10900 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
10901 | const char *backlink_basename = lbasename (backlink->original_name); | |
10902 | char *debug_dirname = ldirname (objfile->original_name); | |
10903 | ||
10904 | make_cleanup (xfree, debug_dirname); | |
10905 | dwp_name = xstrprintf ("%s%s%s.dwp", debug_dirname, | |
10906 | SLASH_STRING, backlink_basename); | |
10907 | } | |
10908 | else | |
10909 | dwp_name = xstrprintf ("%s.dwp", objfile->original_name); | |
10910 | make_cleanup (xfree, dwp_name); | |
80626a55 | 10911 | |
192b62ce | 10912 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwp_name)); |
82bf32bc JK |
10913 | if (dbfd == NULL |
10914 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
10915 | { | |
10916 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
10917 | dwp_name = xstrprintf ("%s.dwp", objfile_name (objfile)); | |
10918 | make_cleanup (xfree, dwp_name); | |
10919 | dbfd = open_dwp_file (dwp_name); | |
10920 | } | |
10921 | ||
80626a55 DE |
10922 | if (dbfd == NULL) |
10923 | { | |
b4f54984 | 10924 | if (dwarf_read_debug) |
80626a55 DE |
10925 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); |
10926 | do_cleanups (cleanups); | |
10927 | return NULL; | |
3019eac3 | 10928 | } |
80626a55 | 10929 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
192b62ce TT |
10930 | dwp_file->name = bfd_get_filename (dbfd.get ()); |
10931 | dwp_file->dbfd = dbfd.release (); | |
80626a55 | 10932 | do_cleanups (cleanups); |
c906108c | 10933 | |
80626a55 | 10934 | /* +1: section 0 is unused */ |
192b62ce | 10935 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
10936 | dwp_file->elf_sections = |
10937 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
10938 | dwp_file->num_sections, asection *); | |
10939 | ||
192b62ce TT |
10940 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_common_dwp_sections, |
10941 | dwp_file); | |
80626a55 DE |
10942 | |
10943 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
10944 | ||
10945 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
10946 | ||
73869dc2 DE |
10947 | /* The DWP file version is stored in the hash table. Oh well. */ |
10948 | if (dwp_file->cus->version != dwp_file->tus->version) | |
10949 | { | |
10950 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 10951 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 10952 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
10953 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
10954 | " TU version %s [in DWP file %s]"), | |
10955 | pulongest (dwp_file->cus->version), | |
10956 | pulongest (dwp_file->tus->version), dwp_name); | |
73869dc2 DE |
10957 | } |
10958 | dwp_file->version = dwp_file->cus->version; | |
10959 | ||
10960 | if (dwp_file->version == 2) | |
192b62ce TT |
10961 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_v2_dwp_sections, |
10962 | dwp_file); | |
73869dc2 | 10963 | |
19ac8c2e DE |
10964 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
10965 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 10966 | |
b4f54984 | 10967 | if (dwarf_read_debug) |
80626a55 DE |
10968 | { |
10969 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
10970 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
10971 | " %s CUs, %s TUs\n", |
10972 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
10973 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
10974 | } |
10975 | ||
10976 | return dwp_file; | |
3019eac3 | 10977 | } |
c906108c | 10978 | |
ab5088bf DE |
10979 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
10980 | ||
10981 | static struct dwp_file * | |
10982 | get_dwp_file (void) | |
10983 | { | |
10984 | if (! dwarf2_per_objfile->dwp_checked) | |
10985 | { | |
10986 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
10987 | dwarf2_per_objfile->dwp_checked = 1; | |
10988 | } | |
10989 | return dwarf2_per_objfile->dwp_file; | |
10990 | } | |
10991 | ||
80626a55 DE |
10992 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
10993 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
10994 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 10995 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
10996 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
10997 | ||
10998 | This is called, for example, when wanting to read a variable with a | |
10999 | complex location. Therefore we don't want to do file i/o for every call. | |
11000 | Therefore we don't want to look for a DWO file on every call. | |
11001 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
11002 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
11003 | for a DWO file. | |
11004 | ||
1c658ad5 | 11005 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 11006 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 11007 | |
3019eac3 | 11008 | static struct dwo_unit * |
80626a55 DE |
11009 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
11010 | const char *dwo_name, const char *comp_dir, | |
11011 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
11012 | { |
11013 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
11014 | const char *kind = is_debug_types ? "TU" : "CU"; |
11015 | void **dwo_file_slot; | |
3019eac3 | 11016 | struct dwo_file *dwo_file; |
80626a55 | 11017 | struct dwp_file *dwp_file; |
cb1df416 | 11018 | |
6a506a2d DE |
11019 | /* First see if there's a DWP file. |
11020 | If we have a DWP file but didn't find the DWO inside it, don't | |
11021 | look for the original DWO file. It makes gdb behave differently | |
11022 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 11023 | |
ab5088bf | 11024 | dwp_file = get_dwp_file (); |
80626a55 | 11025 | if (dwp_file != NULL) |
cf2c3c16 | 11026 | { |
80626a55 DE |
11027 | const struct dwp_hash_table *dwp_htab = |
11028 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
11029 | ||
11030 | if (dwp_htab != NULL) | |
11031 | { | |
11032 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
11033 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
11034 | signature, is_debug_types); | |
80626a55 DE |
11035 | |
11036 | if (dwo_cutu != NULL) | |
11037 | { | |
b4f54984 | 11038 | if (dwarf_read_debug) |
80626a55 DE |
11039 | { |
11040 | fprintf_unfiltered (gdb_stdlog, | |
11041 | "Virtual DWO %s %s found: @%s\n", | |
11042 | kind, hex_string (signature), | |
11043 | host_address_to_string (dwo_cutu)); | |
11044 | } | |
11045 | return dwo_cutu; | |
11046 | } | |
11047 | } | |
11048 | } | |
6a506a2d | 11049 | else |
80626a55 | 11050 | { |
6a506a2d | 11051 | /* No DWP file, look for the DWO file. */ |
80626a55 | 11052 | |
6a506a2d DE |
11053 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
11054 | if (*dwo_file_slot == NULL) | |
80626a55 | 11055 | { |
6a506a2d DE |
11056 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
11057 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 11058 | } |
6a506a2d | 11059 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 11060 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 11061 | |
6a506a2d | 11062 | if (dwo_file != NULL) |
19c3d4c9 | 11063 | { |
6a506a2d DE |
11064 | struct dwo_unit *dwo_cutu = NULL; |
11065 | ||
11066 | if (is_debug_types && dwo_file->tus) | |
11067 | { | |
11068 | struct dwo_unit find_dwo_cutu; | |
11069 | ||
11070 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
11071 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
11072 | dwo_cutu |
11073 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d DE |
11074 | } |
11075 | else if (!is_debug_types && dwo_file->cu) | |
80626a55 | 11076 | { |
6a506a2d DE |
11077 | if (signature == dwo_file->cu->signature) |
11078 | dwo_cutu = dwo_file->cu; | |
11079 | } | |
11080 | ||
11081 | if (dwo_cutu != NULL) | |
11082 | { | |
b4f54984 | 11083 | if (dwarf_read_debug) |
6a506a2d DE |
11084 | { |
11085 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
11086 | kind, dwo_name, hex_string (signature), | |
11087 | host_address_to_string (dwo_cutu)); | |
11088 | } | |
11089 | return dwo_cutu; | |
80626a55 DE |
11090 | } |
11091 | } | |
2e276125 | 11092 | } |
9cdd5dbd | 11093 | |
80626a55 DE |
11094 | /* We didn't find it. This could mean a dwo_id mismatch, or |
11095 | someone deleted the DWO/DWP file, or the search path isn't set up | |
11096 | correctly to find the file. */ | |
11097 | ||
b4f54984 | 11098 | if (dwarf_read_debug) |
80626a55 DE |
11099 | { |
11100 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
11101 | kind, dwo_name, hex_string (signature)); | |
11102 | } | |
3019eac3 | 11103 | |
6656a72d DE |
11104 | /* This is a warning and not a complaint because it can be caused by |
11105 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
11106 | { |
11107 | /* Print the name of the DWP file if we looked there, helps the user | |
11108 | better diagnose the problem. */ | |
11109 | char *dwp_text = NULL; | |
11110 | struct cleanup *cleanups; | |
11111 | ||
11112 | if (dwp_file != NULL) | |
11113 | dwp_text = xstrprintf (" [in DWP file %s]", lbasename (dwp_file->name)); | |
11114 | cleanups = make_cleanup (xfree, dwp_text); | |
11115 | ||
11116 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset 0x%x" | |
11117 | " [in module %s]"), | |
11118 | kind, dwo_name, hex_string (signature), | |
11119 | dwp_text != NULL ? dwp_text : "", | |
11120 | this_unit->is_debug_types ? "TU" : "CU", | |
11121 | this_unit->offset.sect_off, objfile_name (objfile)); | |
11122 | ||
11123 | do_cleanups (cleanups); | |
11124 | } | |
3019eac3 | 11125 | return NULL; |
5fb290d7 DJ |
11126 | } |
11127 | ||
80626a55 DE |
11128 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
11129 | See lookup_dwo_cutu_unit for details. */ | |
11130 | ||
11131 | static struct dwo_unit * | |
11132 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
11133 | const char *dwo_name, const char *comp_dir, | |
11134 | ULONGEST signature) | |
11135 | { | |
11136 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
11137 | } | |
11138 | ||
11139 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
11140 | See lookup_dwo_cutu_unit for details. */ | |
11141 | ||
11142 | static struct dwo_unit * | |
11143 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
11144 | const char *dwo_name, const char *comp_dir) | |
11145 | { | |
11146 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
11147 | } | |
11148 | ||
89e63ee4 DE |
11149 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
11150 | ||
11151 | static int | |
11152 | queue_and_load_dwo_tu (void **slot, void *info) | |
11153 | { | |
11154 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
11155 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
11156 | ULONGEST signature = dwo_unit->signature; | |
11157 | struct signatured_type *sig_type = | |
11158 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
11159 | ||
11160 | if (sig_type != NULL) | |
11161 | { | |
11162 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
11163 | ||
11164 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
11165 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
11166 | while processing PER_CU. */ | |
11167 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
11168 | load_full_type_unit (sig_cu); | |
11169 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
11170 | } | |
11171 | ||
11172 | return 1; | |
11173 | } | |
11174 | ||
11175 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
11176 | The DWO may have the only definition of the type, though it may not be | |
11177 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
11178 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
11179 | ||
11180 | static void | |
11181 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
11182 | { | |
11183 | struct dwo_unit *dwo_unit; | |
11184 | struct dwo_file *dwo_file; | |
11185 | ||
11186 | gdb_assert (!per_cu->is_debug_types); | |
11187 | gdb_assert (get_dwp_file () == NULL); | |
11188 | gdb_assert (per_cu->cu != NULL); | |
11189 | ||
11190 | dwo_unit = per_cu->cu->dwo_unit; | |
11191 | gdb_assert (dwo_unit != NULL); | |
11192 | ||
11193 | dwo_file = dwo_unit->dwo_file; | |
11194 | if (dwo_file->tus != NULL) | |
11195 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
11196 | } | |
11197 | ||
3019eac3 DE |
11198 | /* Free all resources associated with DWO_FILE. |
11199 | Close the DWO file and munmap the sections. | |
11200 | All memory should be on the objfile obstack. */ | |
348e048f DE |
11201 | |
11202 | static void | |
3019eac3 | 11203 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 11204 | { |
348e048f | 11205 | |
5c6fa7ab | 11206 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 11207 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 11208 | |
3019eac3 DE |
11209 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
11210 | } | |
348e048f | 11211 | |
3019eac3 | 11212 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 11213 | |
3019eac3 DE |
11214 | static void |
11215 | free_dwo_file_cleanup (void *arg) | |
11216 | { | |
11217 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
11218 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 11219 | |
3019eac3 DE |
11220 | free_dwo_file (dwo_file, objfile); |
11221 | } | |
348e048f | 11222 | |
3019eac3 | 11223 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 11224 | |
3019eac3 DE |
11225 | static int |
11226 | free_dwo_file_from_slot (void **slot, void *info) | |
11227 | { | |
11228 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
11229 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 11230 | |
3019eac3 | 11231 | free_dwo_file (dwo_file, objfile); |
348e048f | 11232 | |
3019eac3 DE |
11233 | return 1; |
11234 | } | |
348e048f | 11235 | |
3019eac3 | 11236 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 11237 | |
3019eac3 DE |
11238 | static void |
11239 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
11240 | { | |
11241 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 11242 | } |
3019eac3 DE |
11243 | \f |
11244 | /* Read in various DIEs. */ | |
348e048f | 11245 | |
d389af10 JK |
11246 | /* qsort helper for inherit_abstract_dies. */ |
11247 | ||
11248 | static int | |
11249 | unsigned_int_compar (const void *ap, const void *bp) | |
11250 | { | |
11251 | unsigned int a = *(unsigned int *) ap; | |
11252 | unsigned int b = *(unsigned int *) bp; | |
11253 | ||
11254 | return (a > b) - (b > a); | |
11255 | } | |
11256 | ||
11257 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
11258 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
11259 | already referenced by DW_AT_abstract_origin from the children of the | |
11260 | current DIE. */ | |
d389af10 JK |
11261 | |
11262 | static void | |
11263 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
11264 | { | |
11265 | struct die_info *child_die; | |
11266 | unsigned die_children_count; | |
11267 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
11268 | sect_offset *offsets; |
11269 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
11270 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
11271 | struct die_info *origin_die; | |
11272 | /* Iterator of the ORIGIN_DIE children. */ | |
11273 | struct die_info *origin_child_die; | |
11274 | struct cleanup *cleanups; | |
11275 | struct attribute *attr; | |
cd02d79d PA |
11276 | struct dwarf2_cu *origin_cu; |
11277 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
11278 | |
11279 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11280 | if (!attr) | |
11281 | return; | |
11282 | ||
cd02d79d PA |
11283 | /* Note that following die references may follow to a die in a |
11284 | different cu. */ | |
11285 | ||
11286 | origin_cu = cu; | |
11287 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
11288 | ||
11289 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
11290 | symbols in. */ | |
11291 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
11292 | origin_cu->list_in_scope = cu->list_in_scope; | |
11293 | ||
edb3359d DJ |
11294 | if (die->tag != origin_die->tag |
11295 | && !(die->tag == DW_TAG_inlined_subroutine | |
11296 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11297 | complaint (&symfile_complaints, |
11298 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 11299 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
11300 | |
11301 | child_die = die->child; | |
11302 | die_children_count = 0; | |
11303 | while (child_die && child_die->tag) | |
11304 | { | |
11305 | child_die = sibling_die (child_die); | |
11306 | die_children_count++; | |
11307 | } | |
8d749320 | 11308 | offsets = XNEWVEC (sect_offset, die_children_count); |
d389af10 JK |
11309 | cleanups = make_cleanup (xfree, offsets); |
11310 | ||
11311 | offsets_end = offsets; | |
3ea89b92 PMR |
11312 | for (child_die = die->child; |
11313 | child_die && child_die->tag; | |
11314 | child_die = sibling_die (child_die)) | |
11315 | { | |
11316 | struct die_info *child_origin_die; | |
11317 | struct dwarf2_cu *child_origin_cu; | |
11318 | ||
11319 | /* We are trying to process concrete instance entries: | |
216f72a1 | 11320 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
11321 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
11322 | present in the abstract instance but not referenced in the concrete | |
11323 | one. */ | |
216f72a1 JK |
11324 | if (child_die->tag == DW_TAG_call_site |
11325 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
11326 | continue; |
11327 | ||
c38f313d DJ |
11328 | /* For each CHILD_DIE, find the corresponding child of |
11329 | ORIGIN_DIE. If there is more than one layer of | |
11330 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
11331 | but GCC versions at least through 4.4 generate this (GCC PR | |
11332 | 40573). */ | |
3ea89b92 PMR |
11333 | child_origin_die = child_die; |
11334 | child_origin_cu = cu; | |
c38f313d DJ |
11335 | while (1) |
11336 | { | |
cd02d79d PA |
11337 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
11338 | child_origin_cu); | |
c38f313d DJ |
11339 | if (attr == NULL) |
11340 | break; | |
cd02d79d PA |
11341 | child_origin_die = follow_die_ref (child_origin_die, attr, |
11342 | &child_origin_cu); | |
c38f313d DJ |
11343 | } |
11344 | ||
d389af10 JK |
11345 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
11346 | counterpart may exist. */ | |
c38f313d | 11347 | if (child_origin_die != child_die) |
d389af10 | 11348 | { |
edb3359d DJ |
11349 | if (child_die->tag != child_origin_die->tag |
11350 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
11351 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11352 | complaint (&symfile_complaints, |
11353 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11354 | "different tags"), child_die->offset.sect_off, |
11355 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11356 | if (child_origin_die->parent != origin_die) |
11357 | complaint (&symfile_complaints, | |
11358 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
11359 | "different parents"), child_die->offset.sect_off, |
11360 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
11361 | else |
11362 | *offsets_end++ = child_origin_die->offset; | |
d389af10 | 11363 | } |
d389af10 JK |
11364 | } |
11365 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
11366 | unsigned_int_compar); | |
11367 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 11368 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
11369 | complaint (&symfile_complaints, |
11370 | _("Multiple children of DIE 0x%x refer " | |
11371 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 11372 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
11373 | |
11374 | offsetp = offsets; | |
11375 | origin_child_die = origin_die->child; | |
11376 | while (origin_child_die && origin_child_die->tag) | |
11377 | { | |
11378 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
11379 | while (offsetp < offsets_end |
11380 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 11381 | offsetp++; |
b64f50a1 JK |
11382 | if (offsetp >= offsets_end |
11383 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 | 11384 | { |
adde2bff DE |
11385 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
11386 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
11387 | This can happen with mutually referenced abstract_origins. | |
11388 | PR 16581. */ | |
11389 | if (!origin_child_die->in_process) | |
11390 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
11391 | } |
11392 | origin_child_die = sibling_die (origin_child_die); | |
11393 | } | |
cd02d79d | 11394 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
11395 | |
11396 | do_cleanups (cleanups); | |
11397 | } | |
11398 | ||
c906108c | 11399 | static void |
e7c27a73 | 11400 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11401 | { |
e7c27a73 | 11402 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11403 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11404 | struct context_stack *newobj; |
c906108c SS |
11405 | CORE_ADDR lowpc; |
11406 | CORE_ADDR highpc; | |
11407 | struct die_info *child_die; | |
edb3359d | 11408 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 11409 | const char *name; |
e142c38c | 11410 | CORE_ADDR baseaddr; |
801e3a5b | 11411 | struct block *block; |
edb3359d | 11412 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
11413 | VEC (symbolp) *template_args = NULL; |
11414 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
11415 | |
11416 | if (inlined_func) | |
11417 | { | |
11418 | /* If we do not have call site information, we can't show the | |
11419 | caller of this inlined function. That's too confusing, so | |
11420 | only use the scope for local variables. */ | |
11421 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
11422 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
11423 | if (call_line == NULL || call_file == NULL) | |
11424 | { | |
11425 | read_lexical_block_scope (die, cu); | |
11426 | return; | |
11427 | } | |
11428 | } | |
c906108c | 11429 | |
e142c38c DJ |
11430 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
11431 | ||
94af9270 | 11432 | name = dwarf2_name (die, cu); |
c906108c | 11433 | |
e8d05480 JB |
11434 | /* Ignore functions with missing or empty names. These are actually |
11435 | illegal according to the DWARF standard. */ | |
11436 | if (name == NULL) | |
11437 | { | |
11438 | complaint (&symfile_complaints, | |
b64f50a1 JK |
11439 | _("missing name for subprogram DIE at %d"), |
11440 | die->offset.sect_off); | |
e8d05480 JB |
11441 | return; |
11442 | } | |
11443 | ||
11444 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 11445 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 11446 | <= PC_BOUNDS_INVALID) |
e8d05480 | 11447 | { |
ae4d0c03 PM |
11448 | attr = dwarf2_attr (die, DW_AT_external, cu); |
11449 | if (!attr || !DW_UNSND (attr)) | |
11450 | complaint (&symfile_complaints, | |
3e43a32a MS |
11451 | _("cannot get low and high bounds " |
11452 | "for subprogram DIE at %d"), | |
b64f50a1 | 11453 | die->offset.sect_off); |
e8d05480 JB |
11454 | return; |
11455 | } | |
c906108c | 11456 | |
3e29f34a MR |
11457 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11458 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 11459 | |
34eaf542 TT |
11460 | /* If we have any template arguments, then we must allocate a |
11461 | different sort of symbol. */ | |
11462 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
11463 | { | |
11464 | if (child_die->tag == DW_TAG_template_type_param | |
11465 | || child_die->tag == DW_TAG_template_value_param) | |
11466 | { | |
e623cf5d | 11467 | templ_func = allocate_template_symbol (objfile); |
34eaf542 TT |
11468 | templ_func->base.is_cplus_template_function = 1; |
11469 | break; | |
11470 | } | |
11471 | } | |
11472 | ||
fe978cb0 PA |
11473 | newobj = push_context (0, lowpc); |
11474 | newobj->name = new_symbol_full (die, read_type_die (die, cu), cu, | |
34eaf542 | 11475 | (struct symbol *) templ_func); |
4c2df51b | 11476 | |
4cecd739 DJ |
11477 | /* If there is a location expression for DW_AT_frame_base, record |
11478 | it. */ | |
e142c38c | 11479 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 11480 | if (attr) |
fe978cb0 | 11481 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 11482 | |
63e43d3a PMR |
11483 | /* If there is a location for the static link, record it. */ |
11484 | newobj->static_link = NULL; | |
11485 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
11486 | if (attr) | |
11487 | { | |
224c3ddb SM |
11488 | newobj->static_link |
11489 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
11490 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
11491 | } | |
11492 | ||
e142c38c | 11493 | cu->list_in_scope = &local_symbols; |
c906108c | 11494 | |
639d11d3 | 11495 | if (die->child != NULL) |
c906108c | 11496 | { |
639d11d3 | 11497 | child_die = die->child; |
c906108c SS |
11498 | while (child_die && child_die->tag) |
11499 | { | |
34eaf542 TT |
11500 | if (child_die->tag == DW_TAG_template_type_param |
11501 | || child_die->tag == DW_TAG_template_value_param) | |
11502 | { | |
11503 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
11504 | ||
f1078f66 DJ |
11505 | if (arg != NULL) |
11506 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
11507 | } |
11508 | else | |
11509 | process_die (child_die, cu); | |
c906108c SS |
11510 | child_die = sibling_die (child_die); |
11511 | } | |
11512 | } | |
11513 | ||
d389af10 JK |
11514 | inherit_abstract_dies (die, cu); |
11515 | ||
4a811a97 UW |
11516 | /* If we have a DW_AT_specification, we might need to import using |
11517 | directives from the context of the specification DIE. See the | |
11518 | comment in determine_prefix. */ | |
11519 | if (cu->language == language_cplus | |
11520 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
11521 | { | |
11522 | struct dwarf2_cu *spec_cu = cu; | |
11523 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
11524 | ||
11525 | while (spec_die) | |
11526 | { | |
11527 | child_die = spec_die->child; | |
11528 | while (child_die && child_die->tag) | |
11529 | { | |
11530 | if (child_die->tag == DW_TAG_imported_module) | |
11531 | process_die (child_die, spec_cu); | |
11532 | child_die = sibling_die (child_die); | |
11533 | } | |
11534 | ||
11535 | /* In some cases, GCC generates specification DIEs that | |
11536 | themselves contain DW_AT_specification attributes. */ | |
11537 | spec_die = die_specification (spec_die, &spec_cu); | |
11538 | } | |
11539 | } | |
11540 | ||
fe978cb0 | 11541 | newobj = pop_context (); |
c906108c | 11542 | /* Make a block for the local symbols within. */ |
fe978cb0 | 11543 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
63e43d3a | 11544 | newobj->static_link, lowpc, highpc); |
801e3a5b | 11545 | |
df8a16a1 | 11546 | /* For C++, set the block's scope. */ |
45280282 IB |
11547 | if ((cu->language == language_cplus |
11548 | || cu->language == language_fortran | |
c44af4eb TT |
11549 | || cu->language == language_d |
11550 | || cu->language == language_rust) | |
4d4ec4e5 | 11551 | && cu->processing_has_namespace_info) |
195a3f6c TT |
11552 | block_set_scope (block, determine_prefix (die, cu), |
11553 | &objfile->objfile_obstack); | |
df8a16a1 | 11554 | |
801e3a5b JB |
11555 | /* If we have address ranges, record them. */ |
11556 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 11557 | |
fe978cb0 | 11558 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 11559 | |
34eaf542 TT |
11560 | /* Attach template arguments to function. */ |
11561 | if (! VEC_empty (symbolp, template_args)) | |
11562 | { | |
11563 | gdb_assert (templ_func != NULL); | |
11564 | ||
11565 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
11566 | templ_func->template_arguments | |
8d749320 SM |
11567 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
11568 | templ_func->n_template_arguments); | |
34eaf542 TT |
11569 | memcpy (templ_func->template_arguments, |
11570 | VEC_address (symbolp, template_args), | |
11571 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
11572 | VEC_free (symbolp, template_args); | |
11573 | } | |
11574 | ||
208d8187 JB |
11575 | /* In C++, we can have functions nested inside functions (e.g., when |
11576 | a function declares a class that has methods). This means that | |
11577 | when we finish processing a function scope, we may need to go | |
11578 | back to building a containing block's symbol lists. */ | |
fe978cb0 | 11579 | local_symbols = newobj->locals; |
22cee43f | 11580 | local_using_directives = newobj->local_using_directives; |
208d8187 | 11581 | |
921e78cf JB |
11582 | /* If we've finished processing a top-level function, subsequent |
11583 | symbols go in the file symbol list. */ | |
11584 | if (outermost_context_p ()) | |
e142c38c | 11585 | cu->list_in_scope = &file_symbols; |
c906108c SS |
11586 | } |
11587 | ||
11588 | /* Process all the DIES contained within a lexical block scope. Start | |
11589 | a new scope, process the dies, and then close the scope. */ | |
11590 | ||
11591 | static void | |
e7c27a73 | 11592 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11593 | { |
e7c27a73 | 11594 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11595 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11596 | struct context_stack *newobj; |
c906108c SS |
11597 | CORE_ADDR lowpc, highpc; |
11598 | struct die_info *child_die; | |
e142c38c DJ |
11599 | CORE_ADDR baseaddr; |
11600 | ||
11601 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
11602 | |
11603 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
11604 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
11605 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 11606 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 11607 | describe ranges. */ |
e385593e JK |
11608 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
11609 | { | |
11610 | case PC_BOUNDS_NOT_PRESENT: | |
11611 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
11612 | there was no wrapping by that DW_TAG_lexical_block. | |
11613 | GCC does no longer produces such DWARF since GCC r224161. */ | |
11614 | for (child_die = die->child; | |
11615 | child_die != NULL && child_die->tag; | |
11616 | child_die = sibling_die (child_die)) | |
11617 | process_die (child_die, cu); | |
11618 | return; | |
11619 | case PC_BOUNDS_INVALID: | |
11620 | return; | |
11621 | } | |
3e29f34a MR |
11622 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11623 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
11624 | |
11625 | push_context (0, lowpc); | |
639d11d3 | 11626 | if (die->child != NULL) |
c906108c | 11627 | { |
639d11d3 | 11628 | child_die = die->child; |
c906108c SS |
11629 | while (child_die && child_die->tag) |
11630 | { | |
e7c27a73 | 11631 | process_die (child_die, cu); |
c906108c SS |
11632 | child_die = sibling_die (child_die); |
11633 | } | |
11634 | } | |
3ea89b92 | 11635 | inherit_abstract_dies (die, cu); |
fe978cb0 | 11636 | newobj = pop_context (); |
c906108c | 11637 | |
22cee43f | 11638 | if (local_symbols != NULL || local_using_directives != NULL) |
c906108c | 11639 | { |
801e3a5b | 11640 | struct block *block |
63e43d3a | 11641 | = finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 11642 | newobj->start_addr, highpc); |
801e3a5b JB |
11643 | |
11644 | /* Note that recording ranges after traversing children, as we | |
11645 | do here, means that recording a parent's ranges entails | |
11646 | walking across all its children's ranges as they appear in | |
11647 | the address map, which is quadratic behavior. | |
11648 | ||
11649 | It would be nicer to record the parent's ranges before | |
11650 | traversing its children, simply overriding whatever you find | |
11651 | there. But since we don't even decide whether to create a | |
11652 | block until after we've traversed its children, that's hard | |
11653 | to do. */ | |
11654 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 11655 | } |
fe978cb0 | 11656 | local_symbols = newobj->locals; |
22cee43f | 11657 | local_using_directives = newobj->local_using_directives; |
c906108c SS |
11658 | } |
11659 | ||
216f72a1 | 11660 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
11661 | |
11662 | static void | |
11663 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11664 | { | |
11665 | struct objfile *objfile = cu->objfile; | |
11666 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11667 | CORE_ADDR pc, baseaddr; | |
11668 | struct attribute *attr; | |
11669 | struct call_site *call_site, call_site_local; | |
11670 | void **slot; | |
11671 | int nparams; | |
11672 | struct die_info *child_die; | |
11673 | ||
11674 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
11675 | ||
216f72a1 JK |
11676 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
11677 | if (attr == NULL) | |
11678 | { | |
11679 | /* This was a pre-DWARF-5 GNU extension alias | |
11680 | for DW_AT_call_return_pc. */ | |
11681 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
11682 | } | |
96408a79 SA |
11683 | if (!attr) |
11684 | { | |
11685 | complaint (&symfile_complaints, | |
216f72a1 | 11686 | _("missing DW_AT_call_return_pc for DW_TAG_call_site " |
96408a79 | 11687 | "DIE 0x%x [in module %s]"), |
4262abfb | 11688 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11689 | return; |
11690 | } | |
31aa7e4e | 11691 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 11692 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
11693 | |
11694 | if (cu->call_site_htab == NULL) | |
11695 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
11696 | NULL, &objfile->objfile_obstack, | |
11697 | hashtab_obstack_allocate, NULL); | |
11698 | call_site_local.pc = pc; | |
11699 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
11700 | if (*slot != NULL) | |
11701 | { | |
11702 | complaint (&symfile_complaints, | |
216f72a1 | 11703 | _("Duplicate PC %s for DW_TAG_call_site " |
96408a79 | 11704 | "DIE 0x%x [in module %s]"), |
4262abfb JK |
11705 | paddress (gdbarch, pc), die->offset.sect_off, |
11706 | objfile_name (objfile)); | |
96408a79 SA |
11707 | return; |
11708 | } | |
11709 | ||
11710 | /* Count parameters at the caller. */ | |
11711 | ||
11712 | nparams = 0; | |
11713 | for (child_die = die->child; child_die && child_die->tag; | |
11714 | child_die = sibling_die (child_die)) | |
11715 | { | |
216f72a1 JK |
11716 | if (child_die->tag != DW_TAG_call_site_parameter |
11717 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
11718 | { |
11719 | complaint (&symfile_complaints, | |
216f72a1 JK |
11720 | _("Tag %d is not DW_TAG_call_site_parameter in " |
11721 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
4262abfb JK |
11722 | child_die->tag, child_die->offset.sect_off, |
11723 | objfile_name (objfile)); | |
96408a79 SA |
11724 | continue; |
11725 | } | |
11726 | ||
11727 | nparams++; | |
11728 | } | |
11729 | ||
224c3ddb SM |
11730 | call_site |
11731 | = ((struct call_site *) | |
11732 | obstack_alloc (&objfile->objfile_obstack, | |
11733 | sizeof (*call_site) | |
11734 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
11735 | *slot = call_site; |
11736 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
11737 | call_site->pc = pc; | |
11738 | ||
216f72a1 JK |
11739 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
11740 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
11741 | { |
11742 | struct die_info *func_die; | |
11743 | ||
11744 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
11745 | for (func_die = die->parent; | |
11746 | func_die && func_die->tag != DW_TAG_subprogram | |
11747 | && func_die->tag != DW_TAG_subroutine_type; | |
11748 | func_die = func_die->parent); | |
11749 | ||
216f72a1 JK |
11750 | /* DW_AT_call_all_calls is a superset |
11751 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 11752 | if (func_die |
216f72a1 | 11753 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 11754 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 11755 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
11756 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
11757 | { | |
11758 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
11759 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
11760 | both the initial caller containing the real return address PC and | |
11761 | the final callee containing the current PC of a chain of tail | |
11762 | calls do not need to have the tail call list complete. But any | |
11763 | function candidate for a virtual tail call frame searched via | |
11764 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
11765 | determined unambiguously. */ | |
11766 | } | |
11767 | else | |
11768 | { | |
11769 | struct type *func_type = NULL; | |
11770 | ||
11771 | if (func_die) | |
11772 | func_type = get_die_type (func_die, cu); | |
11773 | if (func_type != NULL) | |
11774 | { | |
11775 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
11776 | ||
11777 | /* Enlist this call site to the function. */ | |
11778 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
11779 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
11780 | } | |
11781 | else | |
11782 | complaint (&symfile_complaints, | |
216f72a1 | 11783 | _("Cannot find function owning DW_TAG_call_site " |
96408a79 | 11784 | "DIE 0x%x [in module %s]"), |
4262abfb | 11785 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11786 | } |
11787 | } | |
11788 | ||
216f72a1 JK |
11789 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
11790 | if (attr == NULL) | |
11791 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
11792 | if (attr == NULL) | |
11793 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 11794 | if (attr == NULL) |
216f72a1 JK |
11795 | { |
11796 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
11797 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11798 | } | |
96408a79 SA |
11799 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
11800 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
11801 | /* Keep NULL DWARF_BLOCK. */; | |
11802 | else if (attr_form_is_block (attr)) | |
11803 | { | |
11804 | struct dwarf2_locexpr_baton *dlbaton; | |
11805 | ||
8d749320 | 11806 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
11807 | dlbaton->data = DW_BLOCK (attr)->data; |
11808 | dlbaton->size = DW_BLOCK (attr)->size; | |
11809 | dlbaton->per_cu = cu->per_cu; | |
11810 | ||
11811 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
11812 | } | |
7771576e | 11813 | else if (attr_form_is_ref (attr)) |
96408a79 | 11814 | { |
96408a79 SA |
11815 | struct dwarf2_cu *target_cu = cu; |
11816 | struct die_info *target_die; | |
11817 | ||
ac9ec31b | 11818 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
11819 | gdb_assert (target_cu->objfile == objfile); |
11820 | if (die_is_declaration (target_die, target_cu)) | |
11821 | { | |
7d45c7c3 | 11822 | const char *target_physname; |
9112db09 JK |
11823 | |
11824 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
7d45c7c3 KB |
11825 | target_physname = dwarf2_string_attr (target_die, |
11826 | DW_AT_linkage_name, | |
11827 | target_cu); | |
11828 | if (target_physname == NULL) | |
11829 | target_physname = dwarf2_string_attr (target_die, | |
11830 | DW_AT_MIPS_linkage_name, | |
11831 | target_cu); | |
11832 | if (target_physname == NULL) | |
9112db09 | 11833 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 SA |
11834 | if (target_physname == NULL) |
11835 | complaint (&symfile_complaints, | |
216f72a1 | 11836 | _("DW_AT_call_target target DIE has invalid " |
96408a79 | 11837 | "physname, for referencing DIE 0x%x [in module %s]"), |
4262abfb | 11838 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11839 | else |
7d455152 | 11840 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
11841 | } |
11842 | else | |
11843 | { | |
11844 | CORE_ADDR lowpc; | |
11845 | ||
11846 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 11847 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 11848 | <= PC_BOUNDS_INVALID) |
96408a79 | 11849 | complaint (&symfile_complaints, |
216f72a1 | 11850 | _("DW_AT_call_target target DIE has invalid " |
96408a79 | 11851 | "low pc, for referencing DIE 0x%x [in module %s]"), |
4262abfb | 11852 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11853 | else |
3e29f34a MR |
11854 | { |
11855 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
11856 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
11857 | } | |
96408a79 SA |
11858 | } |
11859 | } | |
11860 | else | |
11861 | complaint (&symfile_complaints, | |
216f72a1 | 11862 | _("DW_TAG_call_site DW_AT_call_target is neither " |
96408a79 | 11863 | "block nor reference, for DIE 0x%x [in module %s]"), |
4262abfb | 11864 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11865 | |
11866 | call_site->per_cu = cu->per_cu; | |
11867 | ||
11868 | for (child_die = die->child; | |
11869 | child_die && child_die->tag; | |
11870 | child_die = sibling_die (child_die)) | |
11871 | { | |
96408a79 | 11872 | struct call_site_parameter *parameter; |
1788b2d3 | 11873 | struct attribute *loc, *origin; |
96408a79 | 11874 | |
216f72a1 JK |
11875 | if (child_die->tag != DW_TAG_call_site_parameter |
11876 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
11877 | { |
11878 | /* Already printed the complaint above. */ | |
11879 | continue; | |
11880 | } | |
11881 | ||
11882 | gdb_assert (call_site->parameter_count < nparams); | |
11883 | parameter = &call_site->parameter[call_site->parameter_count]; | |
11884 | ||
1788b2d3 JK |
11885 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
11886 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 11887 | register is contained in DW_AT_call_value. */ |
96408a79 | 11888 | |
24c5c679 | 11889 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
11890 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
11891 | if (origin == NULL) | |
11892 | { | |
11893 | /* This was a pre-DWARF-5 GNU extension alias | |
11894 | for DW_AT_call_parameter. */ | |
11895 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
11896 | } | |
7771576e | 11897 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 JK |
11898 | { |
11899 | sect_offset offset; | |
11900 | ||
11901 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
11902 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
11903 | if (!offset_in_cu_p (&cu->header, offset)) |
11904 | { | |
11905 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
11906 | binding can be done only inside one CU. Such referenced DIE | |
11907 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
11908 | complaint (&symfile_complaints, | |
216f72a1 JK |
11909 | _("DW_AT_call_parameter offset is not in CU for " |
11910 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11911 | child_die->offset.sect_off, objfile_name (objfile)); |
d76b7dbc JK |
11912 | continue; |
11913 | } | |
1788b2d3 JK |
11914 | parameter->u.param_offset.cu_off = (offset.sect_off |
11915 | - cu->header.offset.sect_off); | |
11916 | } | |
11917 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
11918 | { |
11919 | complaint (&symfile_complaints, | |
11920 | _("No DW_FORM_block* DW_AT_location for " | |
216f72a1 | 11921 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), |
4262abfb | 11922 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11923 | continue; |
11924 | } | |
24c5c679 | 11925 | else |
96408a79 | 11926 | { |
24c5c679 JK |
11927 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
11928 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
11929 | if (parameter->u.dwarf_reg != -1) | |
11930 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
11931 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
11932 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
11933 | ¶meter->u.fb_offset)) | |
11934 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
11935 | else | |
11936 | { | |
11937 | complaint (&symfile_complaints, | |
11938 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
11939 | "for DW_FORM_block* DW_AT_location is supported for " | |
216f72a1 | 11940 | "DW_TAG_call_site child DIE 0x%x " |
24c5c679 | 11941 | "[in module %s]"), |
4262abfb | 11942 | child_die->offset.sect_off, objfile_name (objfile)); |
24c5c679 JK |
11943 | continue; |
11944 | } | |
96408a79 SA |
11945 | } |
11946 | ||
216f72a1 JK |
11947 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
11948 | if (attr == NULL) | |
11949 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
11950 | if (!attr_form_is_block (attr)) |
11951 | { | |
11952 | complaint (&symfile_complaints, | |
216f72a1 JK |
11953 | _("No DW_FORM_block* DW_AT_call_value for " |
11954 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11955 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11956 | continue; |
11957 | } | |
11958 | parameter->value = DW_BLOCK (attr)->data; | |
11959 | parameter->value_size = DW_BLOCK (attr)->size; | |
11960 | ||
11961 | /* Parameters are not pre-cleared by memset above. */ | |
11962 | parameter->data_value = NULL; | |
11963 | parameter->data_value_size = 0; | |
11964 | call_site->parameter_count++; | |
11965 | ||
216f72a1 JK |
11966 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
11967 | if (attr == NULL) | |
11968 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
11969 | if (attr) |
11970 | { | |
11971 | if (!attr_form_is_block (attr)) | |
11972 | complaint (&symfile_complaints, | |
216f72a1 JK |
11973 | _("No DW_FORM_block* DW_AT_call_data_value for " |
11974 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11975 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11976 | else |
11977 | { | |
11978 | parameter->data_value = DW_BLOCK (attr)->data; | |
11979 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
11980 | } | |
11981 | } | |
11982 | } | |
11983 | } | |
11984 | ||
43988095 JK |
11985 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
11986 | reading .debug_rnglists. | |
11987 | Callback's type should be: | |
11988 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
11989 | Return true if the attributes are present and valid, otherwise, | |
11990 | return false. */ | |
11991 | ||
11992 | template <typename Callback> | |
11993 | static bool | |
11994 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
11995 | Callback &&callback) | |
11996 | { | |
11997 | struct objfile *objfile = cu->objfile; | |
11998 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11999 | struct comp_unit_head *cu_header = &cu->header; | |
12000 | bfd *obfd = objfile->obfd; | |
12001 | unsigned int addr_size = cu_header->addr_size; | |
12002 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12003 | /* Base address selection entry. */ | |
12004 | CORE_ADDR base; | |
12005 | int found_base; | |
12006 | unsigned int dummy; | |
12007 | const gdb_byte *buffer; | |
12008 | CORE_ADDR low = 0; | |
12009 | CORE_ADDR high = 0; | |
12010 | CORE_ADDR baseaddr; | |
12011 | bool overflow = false; | |
12012 | ||
12013 | found_base = cu->base_known; | |
12014 | base = cu->base_address; | |
12015 | ||
12016 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
12017 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
12018 | { | |
12019 | complaint (&symfile_complaints, | |
12020 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
12021 | offset); | |
12022 | return false; | |
12023 | } | |
12024 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
12025 | ||
12026 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
12027 | ||
12028 | while (1) | |
12029 | { | |
12030 | CORE_ADDR range_beginning, range_end; | |
12031 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer | |
12032 | + dwarf2_per_objfile->rnglists.size); | |
12033 | unsigned int bytes_read; | |
12034 | ||
12035 | if (buffer == buf_end) | |
12036 | { | |
12037 | overflow = true; | |
12038 | break; | |
12039 | } | |
12040 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
12041 | switch (rlet) | |
12042 | { | |
12043 | case DW_RLE_end_of_list: | |
12044 | break; | |
12045 | case DW_RLE_base_address: | |
12046 | if (buffer + cu->header.addr_size > buf_end) | |
12047 | { | |
12048 | overflow = true; | |
12049 | break; | |
12050 | } | |
12051 | base = read_address (obfd, buffer, cu, &bytes_read); | |
12052 | found_base = 1; | |
12053 | buffer += bytes_read; | |
12054 | break; | |
12055 | case DW_RLE_start_length: | |
12056 | if (buffer + cu->header.addr_size > buf_end) | |
12057 | { | |
12058 | overflow = true; | |
12059 | break; | |
12060 | } | |
12061 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
12062 | buffer += bytes_read; | |
12063 | range_end = (range_beginning | |
12064 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
12065 | buffer += bytes_read; | |
12066 | if (buffer > buf_end) | |
12067 | { | |
12068 | overflow = true; | |
12069 | break; | |
12070 | } | |
12071 | break; | |
12072 | case DW_RLE_offset_pair: | |
12073 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
12074 | buffer += bytes_read; | |
12075 | if (buffer > buf_end) | |
12076 | { | |
12077 | overflow = true; | |
12078 | break; | |
12079 | } | |
12080 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
12081 | buffer += bytes_read; | |
12082 | if (buffer > buf_end) | |
12083 | { | |
12084 | overflow = true; | |
12085 | break; | |
12086 | } | |
12087 | break; | |
12088 | case DW_RLE_start_end: | |
12089 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
12090 | { | |
12091 | overflow = true; | |
12092 | break; | |
12093 | } | |
12094 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
12095 | buffer += bytes_read; | |
12096 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
12097 | buffer += bytes_read; | |
12098 | break; | |
12099 | default: | |
12100 | complaint (&symfile_complaints, | |
12101 | _("Invalid .debug_rnglists data (no base address)")); | |
12102 | return false; | |
12103 | } | |
12104 | if (rlet == DW_RLE_end_of_list || overflow) | |
12105 | break; | |
12106 | if (rlet == DW_RLE_base_address) | |
12107 | continue; | |
12108 | ||
12109 | if (!found_base) | |
12110 | { | |
12111 | /* We have no valid base address for the ranges | |
12112 | data. */ | |
12113 | complaint (&symfile_complaints, | |
12114 | _("Invalid .debug_rnglists data (no base address)")); | |
12115 | return false; | |
12116 | } | |
12117 | ||
12118 | if (range_beginning > range_end) | |
12119 | { | |
12120 | /* Inverted range entries are invalid. */ | |
12121 | complaint (&symfile_complaints, | |
12122 | _("Invalid .debug_rnglists data (inverted range)")); | |
12123 | return false; | |
12124 | } | |
12125 | ||
12126 | /* Empty range entries have no effect. */ | |
12127 | if (range_beginning == range_end) | |
12128 | continue; | |
12129 | ||
12130 | range_beginning += base; | |
12131 | range_end += base; | |
12132 | ||
12133 | /* A not-uncommon case of bad debug info. | |
12134 | Don't pollute the addrmap with bad data. */ | |
12135 | if (range_beginning + baseaddr == 0 | |
12136 | && !dwarf2_per_objfile->has_section_at_zero) | |
12137 | { | |
12138 | complaint (&symfile_complaints, | |
12139 | _(".debug_rnglists entry has start address of zero" | |
12140 | " [in module %s]"), objfile_name (objfile)); | |
12141 | continue; | |
12142 | } | |
12143 | ||
12144 | callback (range_beginning, range_end); | |
12145 | } | |
12146 | ||
12147 | if (overflow) | |
12148 | { | |
12149 | complaint (&symfile_complaints, | |
12150 | _("Offset %d is not terminated " | |
12151 | "for DW_AT_ranges attribute"), | |
12152 | offset); | |
12153 | return false; | |
12154 | } | |
12155 | ||
12156 | return true; | |
12157 | } | |
12158 | ||
12159 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
12160 | Callback's type should be: | |
12161 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 12162 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 12163 | |
43988095 | 12164 | template <typename Callback> |
43039443 | 12165 | static int |
5f46c5a5 | 12166 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 12167 | Callback &&callback) |
43039443 JK |
12168 | { |
12169 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 12170 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
43039443 JK |
12171 | struct comp_unit_head *cu_header = &cu->header; |
12172 | bfd *obfd = objfile->obfd; | |
12173 | unsigned int addr_size = cu_header->addr_size; | |
12174 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12175 | /* Base address selection entry. */ | |
12176 | CORE_ADDR base; | |
12177 | int found_base; | |
12178 | unsigned int dummy; | |
d521ce57 | 12179 | const gdb_byte *buffer; |
ff013f42 | 12180 | CORE_ADDR baseaddr; |
43039443 | 12181 | |
43988095 JK |
12182 | if (cu_header->version >= 5) |
12183 | return dwarf2_rnglists_process (offset, cu, callback); | |
12184 | ||
d00adf39 DE |
12185 | found_base = cu->base_known; |
12186 | base = cu->base_address; | |
43039443 | 12187 | |
be391dca | 12188 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 12189 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
12190 | { |
12191 | complaint (&symfile_complaints, | |
12192 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
12193 | offset); | |
12194 | return 0; | |
12195 | } | |
dce234bc | 12196 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 12197 | |
e7030f15 | 12198 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 12199 | |
43039443 JK |
12200 | while (1) |
12201 | { | |
12202 | CORE_ADDR range_beginning, range_end; | |
12203 | ||
12204 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
12205 | buffer += addr_size; | |
12206 | range_end = read_address (obfd, buffer, cu, &dummy); | |
12207 | buffer += addr_size; | |
12208 | offset += 2 * addr_size; | |
12209 | ||
12210 | /* An end of list marker is a pair of zero addresses. */ | |
12211 | if (range_beginning == 0 && range_end == 0) | |
12212 | /* Found the end of list entry. */ | |
12213 | break; | |
12214 | ||
12215 | /* Each base address selection entry is a pair of 2 values. | |
12216 | The first is the largest possible address, the second is | |
12217 | the base address. Check for a base address here. */ | |
12218 | if ((range_beginning & mask) == mask) | |
12219 | { | |
28d2bfb9 AB |
12220 | /* If we found the largest possible address, then we already |
12221 | have the base address in range_end. */ | |
12222 | base = range_end; | |
43039443 JK |
12223 | found_base = 1; |
12224 | continue; | |
12225 | } | |
12226 | ||
12227 | if (!found_base) | |
12228 | { | |
12229 | /* We have no valid base address for the ranges | |
12230 | data. */ | |
12231 | complaint (&symfile_complaints, | |
12232 | _("Invalid .debug_ranges data (no base address)")); | |
12233 | return 0; | |
12234 | } | |
12235 | ||
9277c30c UW |
12236 | if (range_beginning > range_end) |
12237 | { | |
12238 | /* Inverted range entries are invalid. */ | |
12239 | complaint (&symfile_complaints, | |
12240 | _("Invalid .debug_ranges data (inverted range)")); | |
12241 | return 0; | |
12242 | } | |
12243 | ||
12244 | /* Empty range entries have no effect. */ | |
12245 | if (range_beginning == range_end) | |
12246 | continue; | |
12247 | ||
43039443 JK |
12248 | range_beginning += base; |
12249 | range_end += base; | |
12250 | ||
01093045 DE |
12251 | /* A not-uncommon case of bad debug info. |
12252 | Don't pollute the addrmap with bad data. */ | |
12253 | if (range_beginning + baseaddr == 0 | |
12254 | && !dwarf2_per_objfile->has_section_at_zero) | |
12255 | { | |
12256 | complaint (&symfile_complaints, | |
12257 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 12258 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
12259 | continue; |
12260 | } | |
12261 | ||
5f46c5a5 JK |
12262 | callback (range_beginning, range_end); |
12263 | } | |
12264 | ||
12265 | return 1; | |
12266 | } | |
12267 | ||
12268 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
12269 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
12270 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
12271 | ||
12272 | static int | |
12273 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
12274 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
12275 | struct partial_symtab *ranges_pst) | |
12276 | { | |
12277 | struct objfile *objfile = cu->objfile; | |
12278 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
12279 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
12280 | SECT_OFF_TEXT (objfile)); | |
12281 | int low_set = 0; | |
12282 | CORE_ADDR low = 0; | |
12283 | CORE_ADDR high = 0; | |
12284 | int retval; | |
12285 | ||
12286 | retval = dwarf2_ranges_process (offset, cu, | |
12287 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
12288 | { | |
9277c30c | 12289 | if (ranges_pst != NULL) |
3e29f34a MR |
12290 | { |
12291 | CORE_ADDR lowpc; | |
12292 | CORE_ADDR highpc; | |
12293 | ||
12294 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
12295 | range_beginning + baseaddr); | |
12296 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
12297 | range_end + baseaddr); | |
12298 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
12299 | ranges_pst); | |
12300 | } | |
ff013f42 | 12301 | |
43039443 JK |
12302 | /* FIXME: This is recording everything as a low-high |
12303 | segment of consecutive addresses. We should have a | |
12304 | data structure for discontiguous block ranges | |
12305 | instead. */ | |
12306 | if (! low_set) | |
12307 | { | |
12308 | low = range_beginning; | |
12309 | high = range_end; | |
12310 | low_set = 1; | |
12311 | } | |
12312 | else | |
12313 | { | |
12314 | if (range_beginning < low) | |
12315 | low = range_beginning; | |
12316 | if (range_end > high) | |
12317 | high = range_end; | |
12318 | } | |
5f46c5a5 JK |
12319 | }); |
12320 | if (!retval) | |
12321 | return 0; | |
43039443 JK |
12322 | |
12323 | if (! low_set) | |
12324 | /* If the first entry is an end-of-list marker, the range | |
12325 | describes an empty scope, i.e. no instructions. */ | |
12326 | return 0; | |
12327 | ||
12328 | if (low_return) | |
12329 | *low_return = low; | |
12330 | if (high_return) | |
12331 | *high_return = high; | |
12332 | return 1; | |
12333 | } | |
12334 | ||
3a2b436a JK |
12335 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
12336 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 12337 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 12338 | |
3a2b436a | 12339 | static enum pc_bounds_kind |
af34e669 | 12340 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
12341 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
12342 | struct partial_symtab *pst) | |
c906108c SS |
12343 | { |
12344 | struct attribute *attr; | |
91da1414 | 12345 | struct attribute *attr_high; |
af34e669 DJ |
12346 | CORE_ADDR low = 0; |
12347 | CORE_ADDR high = 0; | |
e385593e | 12348 | enum pc_bounds_kind ret; |
c906108c | 12349 | |
91da1414 MW |
12350 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12351 | if (attr_high) | |
af34e669 | 12352 | { |
e142c38c | 12353 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 12354 | if (attr) |
91da1414 | 12355 | { |
31aa7e4e JB |
12356 | low = attr_value_as_address (attr); |
12357 | high = attr_value_as_address (attr_high); | |
12358 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12359 | high += low; | |
91da1414 | 12360 | } |
af34e669 DJ |
12361 | else |
12362 | /* Found high w/o low attribute. */ | |
e385593e | 12363 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
12364 | |
12365 | /* Found consecutive range of addresses. */ | |
3a2b436a | 12366 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 12367 | } |
c906108c | 12368 | else |
af34e669 | 12369 | { |
e142c38c | 12370 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
12371 | if (attr != NULL) |
12372 | { | |
ab435259 DE |
12373 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12374 | We take advantage of the fact that DW_AT_ranges does not appear | |
12375 | in DW_TAG_compile_unit of DWO files. */ | |
12376 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
12377 | unsigned int ranges_offset = (DW_UNSND (attr) | |
12378 | + (need_ranges_base | |
12379 | ? cu->ranges_base | |
12380 | : 0)); | |
2e3cf129 | 12381 | |
af34e669 | 12382 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 12383 | .debug_ranges section. */ |
2e3cf129 | 12384 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 12385 | return PC_BOUNDS_INVALID; |
43039443 | 12386 | /* Found discontinuous range of addresses. */ |
3a2b436a | 12387 | ret = PC_BOUNDS_RANGES; |
af34e669 | 12388 | } |
e385593e JK |
12389 | else |
12390 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 12391 | } |
c906108c | 12392 | |
9373cf26 JK |
12393 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
12394 | if (high <= low) | |
e385593e | 12395 | return PC_BOUNDS_INVALID; |
c906108c SS |
12396 | |
12397 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
12398 | eliminate duplicate copies of functions and vtables and such. | |
12399 | The linker will arbitrarily choose one and discard the others. | |
12400 | The AT_*_pc values for such functions refer to local labels in | |
12401 | these sections. If the section from that file was discarded, the | |
12402 | labels are not in the output, so the relocs get a value of 0. | |
12403 | If this is a discarded function, mark the pc bounds as invalid, | |
12404 | so that GDB will ignore it. */ | |
72dca2f5 | 12405 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 12406 | return PC_BOUNDS_INVALID; |
c906108c SS |
12407 | |
12408 | *lowpc = low; | |
96408a79 SA |
12409 | if (highpc) |
12410 | *highpc = high; | |
af34e669 | 12411 | return ret; |
c906108c SS |
12412 | } |
12413 | ||
b084d499 JB |
12414 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
12415 | its low and high PC addresses. Do nothing if these addresses could not | |
12416 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
12417 | and HIGHPC to the high address if greater than HIGHPC. */ | |
12418 | ||
12419 | static void | |
12420 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
12421 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12422 | struct dwarf2_cu *cu) | |
12423 | { | |
12424 | CORE_ADDR low, high; | |
12425 | struct die_info *child = die->child; | |
12426 | ||
e385593e | 12427 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 12428 | { |
325fac50 PA |
12429 | *lowpc = std::min (*lowpc, low); |
12430 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
12431 | } |
12432 | ||
12433 | /* If the language does not allow nested subprograms (either inside | |
12434 | subprograms or lexical blocks), we're done. */ | |
12435 | if (cu->language != language_ada) | |
12436 | return; | |
6e70227d | 12437 | |
b084d499 JB |
12438 | /* Check all the children of the given DIE. If it contains nested |
12439 | subprograms, then check their pc bounds. Likewise, we need to | |
12440 | check lexical blocks as well, as they may also contain subprogram | |
12441 | definitions. */ | |
12442 | while (child && child->tag) | |
12443 | { | |
12444 | if (child->tag == DW_TAG_subprogram | |
12445 | || child->tag == DW_TAG_lexical_block) | |
12446 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
12447 | child = sibling_die (child); | |
12448 | } | |
12449 | } | |
12450 | ||
fae299cd DC |
12451 | /* Get the low and high pc's represented by the scope DIE, and store |
12452 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
12453 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
12454 | ||
12455 | static void | |
12456 | get_scope_pc_bounds (struct die_info *die, | |
12457 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12458 | struct dwarf2_cu *cu) | |
12459 | { | |
12460 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
12461 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
12462 | CORE_ADDR current_low, current_high; | |
12463 | ||
3a2b436a | 12464 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 12465 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
12466 | { |
12467 | best_low = current_low; | |
12468 | best_high = current_high; | |
12469 | } | |
12470 | else | |
12471 | { | |
12472 | struct die_info *child = die->child; | |
12473 | ||
12474 | while (child && child->tag) | |
12475 | { | |
12476 | switch (child->tag) { | |
12477 | case DW_TAG_subprogram: | |
b084d499 | 12478 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
12479 | break; |
12480 | case DW_TAG_namespace: | |
f55ee35c | 12481 | case DW_TAG_module: |
fae299cd DC |
12482 | /* FIXME: carlton/2004-01-16: Should we do this for |
12483 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
12484 | that current GCC's always emit the DIEs corresponding | |
12485 | to definitions of methods of classes as children of a | |
12486 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
12487 | the DIEs giving the declarations, which could be | |
12488 | anywhere). But I don't see any reason why the | |
12489 | standards says that they have to be there. */ | |
12490 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
12491 | ||
12492 | if (current_low != ((CORE_ADDR) -1)) | |
12493 | { | |
325fac50 PA |
12494 | best_low = std::min (best_low, current_low); |
12495 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
12496 | } |
12497 | break; | |
12498 | default: | |
0963b4bd | 12499 | /* Ignore. */ |
fae299cd DC |
12500 | break; |
12501 | } | |
12502 | ||
12503 | child = sibling_die (child); | |
12504 | } | |
12505 | } | |
12506 | ||
12507 | *lowpc = best_low; | |
12508 | *highpc = best_high; | |
12509 | } | |
12510 | ||
801e3a5b JB |
12511 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
12512 | in DIE. */ | |
380bca97 | 12513 | |
801e3a5b JB |
12514 | static void |
12515 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
12516 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
12517 | { | |
bb5ed363 | 12518 | struct objfile *objfile = cu->objfile; |
3e29f34a | 12519 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 12520 | struct attribute *attr; |
91da1414 | 12521 | struct attribute *attr_high; |
801e3a5b | 12522 | |
91da1414 MW |
12523 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12524 | if (attr_high) | |
801e3a5b | 12525 | { |
801e3a5b JB |
12526 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
12527 | if (attr) | |
12528 | { | |
31aa7e4e JB |
12529 | CORE_ADDR low = attr_value_as_address (attr); |
12530 | CORE_ADDR high = attr_value_as_address (attr_high); | |
12531 | ||
12532 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12533 | high += low; | |
9a619af0 | 12534 | |
3e29f34a MR |
12535 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
12536 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
12537 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
12538 | } |
12539 | } | |
12540 | ||
12541 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
12542 | if (attr) | |
12543 | { | |
bb5ed363 | 12544 | bfd *obfd = objfile->obfd; |
ab435259 DE |
12545 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12546 | We take advantage of the fact that DW_AT_ranges does not appear | |
12547 | in DW_TAG_compile_unit of DWO files. */ | |
12548 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
12549 | |
12550 | /* The value of the DW_AT_ranges attribute is the offset of the | |
12551 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
12552 | unsigned long offset = (DW_UNSND (attr) |
12553 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 12554 | const gdb_byte *buffer; |
801e3a5b JB |
12555 | |
12556 | /* For some target architectures, but not others, the | |
12557 | read_address function sign-extends the addresses it returns. | |
12558 | To recognize base address selection entries, we need a | |
12559 | mask. */ | |
12560 | unsigned int addr_size = cu->header.addr_size; | |
12561 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12562 | ||
12563 | /* The base address, to which the next pair is relative. Note | |
12564 | that this 'base' is a DWARF concept: most entries in a range | |
12565 | list are relative, to reduce the number of relocs against the | |
12566 | debugging information. This is separate from this function's | |
12567 | 'baseaddr' argument, which GDB uses to relocate debugging | |
12568 | information from a shared library based on the address at | |
12569 | which the library was loaded. */ | |
d00adf39 DE |
12570 | CORE_ADDR base = cu->base_address; |
12571 | int base_known = cu->base_known; | |
801e3a5b | 12572 | |
5f46c5a5 JK |
12573 | dwarf2_ranges_process (offset, cu, |
12574 | [&] (CORE_ADDR start, CORE_ADDR end) | |
12575 | { | |
12576 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); | |
12577 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
12578 | record_block_range (block, start, end - 1); | |
12579 | }); | |
801e3a5b JB |
12580 | } |
12581 | } | |
12582 | ||
685b1105 JK |
12583 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
12584 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 12585 | |
685b1105 JK |
12586 | static void |
12587 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 12588 | { |
38360086 | 12589 | int major, minor; |
60d5a603 JK |
12590 | |
12591 | if (cu->producer == NULL) | |
12592 | { | |
12593 | /* For unknown compilers expect their behavior is DWARF version | |
12594 | compliant. | |
12595 | ||
12596 | GCC started to support .debug_types sections by -gdwarf-4 since | |
12597 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
12598 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
12599 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
12600 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 12601 | } |
b1ffba5a | 12602 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 12603 | { |
38360086 MW |
12604 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
12605 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 12606 | } |
61012eef | 12607 | else if (startswith (cu->producer, "Intel(R) C")) |
685b1105 JK |
12608 | cu->producer_is_icc = 1; |
12609 | else | |
12610 | { | |
12611 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
12612 | compliant. */ | |
60d5a603 JK |
12613 | } |
12614 | ||
ba919b58 | 12615 | cu->checked_producer = 1; |
685b1105 | 12616 | } |
ba919b58 | 12617 | |
685b1105 JK |
12618 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
12619 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
12620 | during 4.6.0 experimental. */ | |
12621 | ||
12622 | static int | |
12623 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
12624 | { | |
12625 | if (!cu->checked_producer) | |
12626 | check_producer (cu); | |
12627 | ||
12628 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
12629 | } |
12630 | ||
12631 | /* Return the default accessibility type if it is not overriden by | |
12632 | DW_AT_accessibility. */ | |
12633 | ||
12634 | static enum dwarf_access_attribute | |
12635 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
12636 | { | |
12637 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
12638 | { | |
12639 | /* The default DWARF 2 accessibility for members is public, the default | |
12640 | accessibility for inheritance is private. */ | |
12641 | ||
12642 | if (die->tag != DW_TAG_inheritance) | |
12643 | return DW_ACCESS_public; | |
12644 | else | |
12645 | return DW_ACCESS_private; | |
12646 | } | |
12647 | else | |
12648 | { | |
12649 | /* DWARF 3+ defines the default accessibility a different way. The same | |
12650 | rules apply now for DW_TAG_inheritance as for the members and it only | |
12651 | depends on the container kind. */ | |
12652 | ||
12653 | if (die->parent->tag == DW_TAG_class_type) | |
12654 | return DW_ACCESS_private; | |
12655 | else | |
12656 | return DW_ACCESS_public; | |
12657 | } | |
12658 | } | |
12659 | ||
74ac6d43 TT |
12660 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
12661 | offset. If the attribute was not found return 0, otherwise return | |
12662 | 1. If it was found but could not properly be handled, set *OFFSET | |
12663 | to 0. */ | |
12664 | ||
12665 | static int | |
12666 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
12667 | LONGEST *offset) | |
12668 | { | |
12669 | struct attribute *attr; | |
12670 | ||
12671 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
12672 | if (attr != NULL) | |
12673 | { | |
12674 | *offset = 0; | |
12675 | ||
12676 | /* Note that we do not check for a section offset first here. | |
12677 | This is because DW_AT_data_member_location is new in DWARF 4, | |
12678 | so if we see it, we can assume that a constant form is really | |
12679 | a constant and not a section offset. */ | |
12680 | if (attr_form_is_constant (attr)) | |
12681 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
12682 | else if (attr_form_is_section_offset (attr)) | |
12683 | dwarf2_complex_location_expr_complaint (); | |
12684 | else if (attr_form_is_block (attr)) | |
12685 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
12686 | else | |
12687 | dwarf2_complex_location_expr_complaint (); | |
12688 | ||
12689 | return 1; | |
12690 | } | |
12691 | ||
12692 | return 0; | |
12693 | } | |
12694 | ||
c906108c SS |
12695 | /* Add an aggregate field to the field list. */ |
12696 | ||
12697 | static void | |
107d2387 | 12698 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12699 | struct dwarf2_cu *cu) |
6e70227d | 12700 | { |
e7c27a73 | 12701 | struct objfile *objfile = cu->objfile; |
5e2b427d | 12702 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12703 | struct nextfield *new_field; |
12704 | struct attribute *attr; | |
12705 | struct field *fp; | |
15d034d0 | 12706 | const char *fieldname = ""; |
c906108c SS |
12707 | |
12708 | /* Allocate a new field list entry and link it in. */ | |
8d749320 | 12709 | new_field = XNEW (struct nextfield); |
b8c9b27d | 12710 | make_cleanup (xfree, new_field); |
c906108c | 12711 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
12712 | |
12713 | if (die->tag == DW_TAG_inheritance) | |
12714 | { | |
12715 | new_field->next = fip->baseclasses; | |
12716 | fip->baseclasses = new_field; | |
12717 | } | |
12718 | else | |
12719 | { | |
12720 | new_field->next = fip->fields; | |
12721 | fip->fields = new_field; | |
12722 | } | |
c906108c SS |
12723 | fip->nfields++; |
12724 | ||
e142c38c | 12725 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
12726 | if (attr) |
12727 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
12728 | else |
12729 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
12730 | if (new_field->accessibility != DW_ACCESS_public) |
12731 | fip->non_public_fields = 1; | |
60d5a603 | 12732 | |
e142c38c | 12733 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
12734 | if (attr) |
12735 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
12736 | else |
12737 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
12738 | |
12739 | fp = &new_field->field; | |
a9a9bd0f | 12740 | |
e142c38c | 12741 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 12742 | { |
74ac6d43 TT |
12743 | LONGEST offset; |
12744 | ||
a9a9bd0f | 12745 | /* Data member other than a C++ static data member. */ |
6e70227d | 12746 | |
c906108c | 12747 | /* Get type of field. */ |
e7c27a73 | 12748 | fp->type = die_type (die, cu); |
c906108c | 12749 | |
d6a843b5 | 12750 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 12751 | |
c906108c | 12752 | /* Get bit size of field (zero if none). */ |
e142c38c | 12753 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
12754 | if (attr) |
12755 | { | |
12756 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
12757 | } | |
12758 | else | |
12759 | { | |
12760 | FIELD_BITSIZE (*fp) = 0; | |
12761 | } | |
12762 | ||
12763 | /* Get bit offset of field. */ | |
74ac6d43 TT |
12764 | if (handle_data_member_location (die, cu, &offset)) |
12765 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 12766 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
12767 | if (attr) |
12768 | { | |
5e2b427d | 12769 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
12770 | { |
12771 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
12772 | additional bit offset from the MSB of the containing |
12773 | anonymous object to the MSB of the field. We don't | |
12774 | have to do anything special since we don't need to | |
12775 | know the size of the anonymous object. */ | |
f41f5e61 | 12776 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
12777 | } |
12778 | else | |
12779 | { | |
12780 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
12781 | MSB of the anonymous object, subtract off the number of |
12782 | bits from the MSB of the field to the MSB of the | |
12783 | object, and then subtract off the number of bits of | |
12784 | the field itself. The result is the bit offset of | |
12785 | the LSB of the field. */ | |
c906108c SS |
12786 | int anonymous_size; |
12787 | int bit_offset = DW_UNSND (attr); | |
12788 | ||
e142c38c | 12789 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12790 | if (attr) |
12791 | { | |
12792 | /* The size of the anonymous object containing | |
12793 | the bit field is explicit, so use the | |
12794 | indicated size (in bytes). */ | |
12795 | anonymous_size = DW_UNSND (attr); | |
12796 | } | |
12797 | else | |
12798 | { | |
12799 | /* The size of the anonymous object containing | |
12800 | the bit field must be inferred from the type | |
12801 | attribute of the data member containing the | |
12802 | bit field. */ | |
12803 | anonymous_size = TYPE_LENGTH (fp->type); | |
12804 | } | |
f41f5e61 PA |
12805 | SET_FIELD_BITPOS (*fp, |
12806 | (FIELD_BITPOS (*fp) | |
12807 | + anonymous_size * bits_per_byte | |
12808 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
12809 | } |
12810 | } | |
da5b30da AA |
12811 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
12812 | if (attr != NULL) | |
12813 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
12814 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
12815 | |
12816 | /* Get name of field. */ | |
39cbfefa DJ |
12817 | fieldname = dwarf2_name (die, cu); |
12818 | if (fieldname == NULL) | |
12819 | fieldname = ""; | |
d8151005 DJ |
12820 | |
12821 | /* The name is already allocated along with this objfile, so we don't | |
12822 | need to duplicate it for the type. */ | |
12823 | fp->name = fieldname; | |
c906108c SS |
12824 | |
12825 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 12826 | pointer or virtual base class pointer) to private. */ |
e142c38c | 12827 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 12828 | { |
d48cc9dd | 12829 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
12830 | new_field->accessibility = DW_ACCESS_private; |
12831 | fip->non_public_fields = 1; | |
12832 | } | |
12833 | } | |
a9a9bd0f | 12834 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 12835 | { |
a9a9bd0f DC |
12836 | /* C++ static member. */ |
12837 | ||
12838 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
12839 | is a declaration, but all versions of G++ as of this writing | |
12840 | (so through at least 3.2.1) incorrectly generate | |
12841 | DW_TAG_variable tags. */ | |
6e70227d | 12842 | |
ff355380 | 12843 | const char *physname; |
c906108c | 12844 | |
a9a9bd0f | 12845 | /* Get name of field. */ |
39cbfefa DJ |
12846 | fieldname = dwarf2_name (die, cu); |
12847 | if (fieldname == NULL) | |
c906108c SS |
12848 | return; |
12849 | ||
254e6b9e | 12850 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
12851 | if (attr |
12852 | /* Only create a symbol if this is an external value. | |
12853 | new_symbol checks this and puts the value in the global symbol | |
12854 | table, which we want. If it is not external, new_symbol | |
12855 | will try to put the value in cu->list_in_scope which is wrong. */ | |
12856 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
12857 | { |
12858 | /* A static const member, not much different than an enum as far as | |
12859 | we're concerned, except that we can support more types. */ | |
12860 | new_symbol (die, NULL, cu); | |
12861 | } | |
12862 | ||
2df3850c | 12863 | /* Get physical name. */ |
ff355380 | 12864 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 12865 | |
d8151005 DJ |
12866 | /* The name is already allocated along with this objfile, so we don't |
12867 | need to duplicate it for the type. */ | |
12868 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 12869 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 12870 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
12871 | } |
12872 | else if (die->tag == DW_TAG_inheritance) | |
12873 | { | |
74ac6d43 | 12874 | LONGEST offset; |
d4b96c9a | 12875 | |
74ac6d43 TT |
12876 | /* C++ base class field. */ |
12877 | if (handle_data_member_location (die, cu, &offset)) | |
12878 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 12879 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 12880 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
12881 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
12882 | fip->nbaseclasses++; | |
12883 | } | |
12884 | } | |
12885 | ||
98751a41 JK |
12886 | /* Add a typedef defined in the scope of the FIP's class. */ |
12887 | ||
12888 | static void | |
12889 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
12890 | struct dwarf2_cu *cu) | |
6e70227d | 12891 | { |
98751a41 | 12892 | struct typedef_field_list *new_field; |
98751a41 | 12893 | struct typedef_field *fp; |
98751a41 JK |
12894 | |
12895 | /* Allocate a new field list entry and link it in. */ | |
8d749320 | 12896 | new_field = XCNEW (struct typedef_field_list); |
98751a41 JK |
12897 | make_cleanup (xfree, new_field); |
12898 | ||
12899 | gdb_assert (die->tag == DW_TAG_typedef); | |
12900 | ||
12901 | fp = &new_field->field; | |
12902 | ||
12903 | /* Get name of field. */ | |
12904 | fp->name = dwarf2_name (die, cu); | |
12905 | if (fp->name == NULL) | |
12906 | return; | |
12907 | ||
12908 | fp->type = read_type_die (die, cu); | |
12909 | ||
12910 | new_field->next = fip->typedef_field_list; | |
12911 | fip->typedef_field_list = new_field; | |
12912 | fip->typedef_field_list_count++; | |
12913 | } | |
12914 | ||
c906108c SS |
12915 | /* Create the vector of fields, and attach it to the type. */ |
12916 | ||
12917 | static void | |
fba45db2 | 12918 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12919 | struct dwarf2_cu *cu) |
c906108c SS |
12920 | { |
12921 | int nfields = fip->nfields; | |
12922 | ||
12923 | /* Record the field count, allocate space for the array of fields, | |
12924 | and create blank accessibility bitfields if necessary. */ | |
12925 | TYPE_NFIELDS (type) = nfields; | |
12926 | TYPE_FIELDS (type) = (struct field *) | |
12927 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
12928 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
12929 | ||
b4ba55a1 | 12930 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
12931 | { |
12932 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12933 | ||
12934 | TYPE_FIELD_PRIVATE_BITS (type) = | |
12935 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12936 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
12937 | ||
12938 | TYPE_FIELD_PROTECTED_BITS (type) = | |
12939 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12940 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
12941 | ||
774b6a14 TT |
12942 | TYPE_FIELD_IGNORE_BITS (type) = |
12943 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12944 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
12945 | } |
12946 | ||
12947 | /* If the type has baseclasses, allocate and clear a bit vector for | |
12948 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 12949 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
12950 | { |
12951 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 12952 | unsigned char *pointer; |
c906108c SS |
12953 | |
12954 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 12955 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 12956 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
c906108c SS |
12957 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
12958 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
12959 | } | |
12960 | ||
3e43a32a MS |
12961 | /* Copy the saved-up fields into the field vector. Start from the head of |
12962 | the list, adding to the tail of the field array, so that they end up in | |
12963 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
12964 | while (nfields-- > 0) |
12965 | { | |
7d0ccb61 DJ |
12966 | struct nextfield *fieldp; |
12967 | ||
12968 | if (fip->fields) | |
12969 | { | |
12970 | fieldp = fip->fields; | |
12971 | fip->fields = fieldp->next; | |
12972 | } | |
12973 | else | |
12974 | { | |
12975 | fieldp = fip->baseclasses; | |
12976 | fip->baseclasses = fieldp->next; | |
12977 | } | |
12978 | ||
12979 | TYPE_FIELD (type, nfields) = fieldp->field; | |
12980 | switch (fieldp->accessibility) | |
c906108c | 12981 | { |
c5aa993b | 12982 | case DW_ACCESS_private: |
b4ba55a1 JB |
12983 | if (cu->language != language_ada) |
12984 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 12985 | break; |
c906108c | 12986 | |
c5aa993b | 12987 | case DW_ACCESS_protected: |
b4ba55a1 JB |
12988 | if (cu->language != language_ada) |
12989 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 12990 | break; |
c906108c | 12991 | |
c5aa993b JM |
12992 | case DW_ACCESS_public: |
12993 | break; | |
c906108c | 12994 | |
c5aa993b JM |
12995 | default: |
12996 | /* Unknown accessibility. Complain and treat it as public. */ | |
12997 | { | |
e2e0b3e5 | 12998 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 12999 | fieldp->accessibility); |
c5aa993b JM |
13000 | } |
13001 | break; | |
c906108c SS |
13002 | } |
13003 | if (nfields < fip->nbaseclasses) | |
13004 | { | |
7d0ccb61 | 13005 | switch (fieldp->virtuality) |
c906108c | 13006 | { |
c5aa993b JM |
13007 | case DW_VIRTUALITY_virtual: |
13008 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 13009 | if (cu->language == language_ada) |
a73c6dcd | 13010 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
13011 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
13012 | break; | |
c906108c SS |
13013 | } |
13014 | } | |
c906108c SS |
13015 | } |
13016 | } | |
13017 | ||
7d27a96d TT |
13018 | /* Return true if this member function is a constructor, false |
13019 | otherwise. */ | |
13020 | ||
13021 | static int | |
13022 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
13023 | { | |
13024 | const char *fieldname; | |
fe978cb0 | 13025 | const char *type_name; |
7d27a96d TT |
13026 | int len; |
13027 | ||
13028 | if (die->parent == NULL) | |
13029 | return 0; | |
13030 | ||
13031 | if (die->parent->tag != DW_TAG_structure_type | |
13032 | && die->parent->tag != DW_TAG_union_type | |
13033 | && die->parent->tag != DW_TAG_class_type) | |
13034 | return 0; | |
13035 | ||
13036 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
13037 | type_name = dwarf2_name (die->parent, cu); |
13038 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
13039 | return 0; |
13040 | ||
13041 | len = strlen (fieldname); | |
fe978cb0 PA |
13042 | return (strncmp (fieldname, type_name, len) == 0 |
13043 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
13044 | } |
13045 | ||
c906108c SS |
13046 | /* Add a member function to the proper fieldlist. */ |
13047 | ||
13048 | static void | |
107d2387 | 13049 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 13050 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 13051 | { |
e7c27a73 | 13052 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13053 | struct attribute *attr; |
13054 | struct fnfieldlist *flp; | |
13055 | int i; | |
13056 | struct fn_field *fnp; | |
15d034d0 | 13057 | const char *fieldname; |
c906108c | 13058 | struct nextfnfield *new_fnfield; |
f792889a | 13059 | struct type *this_type; |
60d5a603 | 13060 | enum dwarf_access_attribute accessibility; |
c906108c | 13061 | |
b4ba55a1 | 13062 | if (cu->language == language_ada) |
a73c6dcd | 13063 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 13064 | |
2df3850c | 13065 | /* Get name of member function. */ |
39cbfefa DJ |
13066 | fieldname = dwarf2_name (die, cu); |
13067 | if (fieldname == NULL) | |
2df3850c | 13068 | return; |
c906108c | 13069 | |
c906108c SS |
13070 | /* Look up member function name in fieldlist. */ |
13071 | for (i = 0; i < fip->nfnfields; i++) | |
13072 | { | |
27bfe10e | 13073 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
13074 | break; |
13075 | } | |
13076 | ||
13077 | /* Create new list element if necessary. */ | |
13078 | if (i < fip->nfnfields) | |
13079 | flp = &fip->fnfieldlists[i]; | |
13080 | else | |
13081 | { | |
13082 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13083 | { | |
13084 | fip->fnfieldlists = (struct fnfieldlist *) | |
13085 | xrealloc (fip->fnfieldlists, | |
13086 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13087 | * sizeof (struct fnfieldlist)); |
c906108c | 13088 | if (fip->nfnfields == 0) |
c13c43fd | 13089 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
13090 | } |
13091 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
13092 | flp->name = fieldname; | |
13093 | flp->length = 0; | |
13094 | flp->head = NULL; | |
3da10d80 | 13095 | i = fip->nfnfields++; |
c906108c SS |
13096 | } |
13097 | ||
13098 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 13099 | entry. */ |
8d749320 | 13100 | new_fnfield = XNEW (struct nextfnfield); |
b8c9b27d | 13101 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
13102 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
13103 | new_fnfield->next = flp->head; | |
13104 | flp->head = new_fnfield; | |
13105 | flp->length++; | |
13106 | ||
13107 | /* Fill in the member function field info. */ | |
13108 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
13109 | |
13110 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 13111 | if (cu->language == language_cplus) |
3da10d80 KS |
13112 | { |
13113 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
13114 | die, cu); | |
13115 | } | |
13116 | else | |
13117 | { | |
1d06ead6 | 13118 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
13119 | fnp->physname = physname ? physname : ""; |
13120 | } | |
13121 | ||
c906108c | 13122 | fnp->type = alloc_type (objfile); |
f792889a DJ |
13123 | this_type = read_type_die (die, cu); |
13124 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 13125 | { |
f792889a | 13126 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 13127 | |
f792889a | 13128 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
13129 | of the method itself (TYPE_CODE_METHOD). */ |
13130 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
13131 | TYPE_TARGET_TYPE (this_type), |
13132 | TYPE_FIELDS (this_type), | |
13133 | TYPE_NFIELDS (this_type), | |
13134 | TYPE_VARARGS (this_type)); | |
c906108c SS |
13135 | |
13136 | /* Handle static member functions. | |
c5aa993b | 13137 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
13138 | member functions. G++ helps GDB by marking the first |
13139 | parameter for non-static member functions (which is the this | |
13140 | pointer) as artificial. We obtain this information from | |
13141 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 13142 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
13143 | fnp->voffset = VOFFSET_STATIC; |
13144 | } | |
13145 | else | |
e2e0b3e5 | 13146 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 13147 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
13148 | |
13149 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 13150 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 13151 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 13152 | |
3e43a32a MS |
13153 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
13154 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
13155 | |
13156 | /* Get accessibility. */ | |
e142c38c | 13157 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 13158 | if (attr) |
aead7601 | 13159 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
13160 | else |
13161 | accessibility = dwarf2_default_access_attribute (die, cu); | |
13162 | switch (accessibility) | |
c906108c | 13163 | { |
60d5a603 JK |
13164 | case DW_ACCESS_private: |
13165 | fnp->is_private = 1; | |
13166 | break; | |
13167 | case DW_ACCESS_protected: | |
13168 | fnp->is_protected = 1; | |
13169 | break; | |
c906108c SS |
13170 | } |
13171 | ||
b02dede2 | 13172 | /* Check for artificial methods. */ |
e142c38c | 13173 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
13174 | if (attr && DW_UNSND (attr) != 0) |
13175 | fnp->is_artificial = 1; | |
13176 | ||
7d27a96d TT |
13177 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
13178 | ||
0d564a31 | 13179 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
13180 | function. For older versions of GCC, this is an offset in the |
13181 | appropriate virtual table, as specified by DW_AT_containing_type. | |
13182 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
13183 | to the object address. */ |
13184 | ||
e142c38c | 13185 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 13186 | if (attr) |
8e19ed76 | 13187 | { |
aec5aa8b | 13188 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 13189 | { |
aec5aa8b TT |
13190 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
13191 | { | |
13192 | /* Old-style GCC. */ | |
13193 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
13194 | } | |
13195 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
13196 | || (DW_BLOCK (attr)->size > 1 | |
13197 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
13198 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
13199 | { | |
aec5aa8b TT |
13200 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
13201 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
13202 | dwarf2_complex_location_expr_complaint (); | |
13203 | else | |
13204 | fnp->voffset /= cu->header.addr_size; | |
13205 | fnp->voffset += 2; | |
13206 | } | |
13207 | else | |
13208 | dwarf2_complex_location_expr_complaint (); | |
13209 | ||
13210 | if (!fnp->fcontext) | |
7e993ebf KS |
13211 | { |
13212 | /* If there is no `this' field and no DW_AT_containing_type, | |
13213 | we cannot actually find a base class context for the | |
13214 | vtable! */ | |
13215 | if (TYPE_NFIELDS (this_type) == 0 | |
13216 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
13217 | { | |
13218 | complaint (&symfile_complaints, | |
13219 | _("cannot determine context for virtual member " | |
13220 | "function \"%s\" (offset %d)"), | |
13221 | fieldname, die->offset.sect_off); | |
13222 | } | |
13223 | else | |
13224 | { | |
13225 | fnp->fcontext | |
13226 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
13227 | } | |
13228 | } | |
aec5aa8b | 13229 | } |
3690dd37 | 13230 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 13231 | { |
4d3c2250 | 13232 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
13233 | } |
13234 | else | |
13235 | { | |
4d3c2250 KB |
13236 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
13237 | fieldname); | |
8e19ed76 | 13238 | } |
0d564a31 | 13239 | } |
d48cc9dd DJ |
13240 | else |
13241 | { | |
13242 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
13243 | if (attr && DW_UNSND (attr)) | |
13244 | { | |
13245 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
13246 | complaint (&symfile_complaints, | |
3e43a32a MS |
13247 | _("Member function \"%s\" (offset %d) is virtual " |
13248 | "but the vtable offset is not specified"), | |
b64f50a1 | 13249 | fieldname, die->offset.sect_off); |
9655fd1a | 13250 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
13251 | TYPE_CPLUS_DYNAMIC (type) = 1; |
13252 | } | |
13253 | } | |
c906108c SS |
13254 | } |
13255 | ||
13256 | /* Create the vector of member function fields, and attach it to the type. */ | |
13257 | ||
13258 | static void | |
fba45db2 | 13259 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 13260 | struct dwarf2_cu *cu) |
c906108c SS |
13261 | { |
13262 | struct fnfieldlist *flp; | |
c906108c SS |
13263 | int i; |
13264 | ||
b4ba55a1 | 13265 | if (cu->language == language_ada) |
a73c6dcd | 13266 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 13267 | |
c906108c SS |
13268 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
13269 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
13270 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
13271 | ||
13272 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
13273 | { | |
13274 | struct nextfnfield *nfp = flp->head; | |
13275 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
13276 | int k; | |
13277 | ||
13278 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
13279 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
13280 | fn_flp->fn_fields = (struct fn_field *) | |
13281 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
13282 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 13283 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
13284 | } |
13285 | ||
13286 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
13287 | } |
13288 | ||
1168df01 JB |
13289 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
13290 | language, zero otherwise. */ | |
13291 | static int | |
13292 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
13293 | { | |
13294 | static const char vptr[] = "_vptr"; | |
987504bb | 13295 | static const char vtable[] = "vtable"; |
1168df01 | 13296 | |
9c37b5ae TT |
13297 | /* Look for the C++ form of the vtable. */ |
13298 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
13299 | return 1; |
13300 | ||
13301 | return 0; | |
13302 | } | |
13303 | ||
c0dd20ea | 13304 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
13305 | functions, with the ABI-specified layout. If TYPE describes |
13306 | such a structure, smash it into a member function type. | |
61049d3b DJ |
13307 | |
13308 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
13309 | This is GCC PR debug/28767. */ | |
c0dd20ea | 13310 | |
0b92b5bb TT |
13311 | static void |
13312 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 13313 | { |
09e2d7c7 | 13314 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
13315 | |
13316 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
13317 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
13318 | return; | |
c0dd20ea DJ |
13319 | |
13320 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
13321 | if (TYPE_FIELD_NAME (type, 0) == NULL |
13322 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
13323 | || TYPE_FIELD_NAME (type, 1) == NULL | |
13324 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
13325 | return; | |
c0dd20ea DJ |
13326 | |
13327 | /* Find the type of the method. */ | |
0b92b5bb | 13328 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
13329 | if (pfn_type == NULL |
13330 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
13331 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 13332 | return; |
c0dd20ea DJ |
13333 | |
13334 | /* Look for the "this" argument. */ | |
13335 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
13336 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 13337 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 13338 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 13339 | return; |
c0dd20ea | 13340 | |
09e2d7c7 | 13341 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 13342 | new_type = alloc_type (objfile); |
09e2d7c7 | 13343 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
13344 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
13345 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 13346 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 13347 | } |
1168df01 | 13348 | |
685b1105 JK |
13349 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
13350 | (icc). */ | |
13351 | ||
13352 | static int | |
13353 | producer_is_icc (struct dwarf2_cu *cu) | |
13354 | { | |
13355 | if (!cu->checked_producer) | |
13356 | check_producer (cu); | |
13357 | ||
13358 | return cu->producer_is_icc; | |
13359 | } | |
13360 | ||
c906108c | 13361 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
13362 | (definition) to create a type for the structure or union. Fill in |
13363 | the type's name and general properties; the members will not be | |
83655187 DE |
13364 | processed until process_structure_scope. A symbol table entry for |
13365 | the type will also not be done until process_structure_scope (assuming | |
13366 | the type has a name). | |
c906108c | 13367 | |
c767944b DJ |
13368 | NOTE: we need to call these functions regardless of whether or not the |
13369 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 13370 | structure or union. This gets the type entered into our set of |
83655187 | 13371 | user defined types. */ |
c906108c | 13372 | |
f792889a | 13373 | static struct type * |
134d01f1 | 13374 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13375 | { |
e7c27a73 | 13376 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13377 | struct type *type; |
13378 | struct attribute *attr; | |
15d034d0 | 13379 | const char *name; |
c906108c | 13380 | |
348e048f DE |
13381 | /* If the definition of this type lives in .debug_types, read that type. |
13382 | Don't follow DW_AT_specification though, that will take us back up | |
13383 | the chain and we want to go down. */ | |
45e58e77 | 13384 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13385 | if (attr) |
13386 | { | |
ac9ec31b | 13387 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13388 | |
ac9ec31b | 13389 | /* The type's CU may not be the same as CU. |
02142a6c | 13390 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13391 | return set_die_type (die, type, cu); |
13392 | } | |
13393 | ||
c0dd20ea | 13394 | type = alloc_type (objfile); |
c906108c | 13395 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 13396 | |
39cbfefa DJ |
13397 | name = dwarf2_name (die, cu); |
13398 | if (name != NULL) | |
c906108c | 13399 | { |
987504bb | 13400 | if (cu->language == language_cplus |
c44af4eb TT |
13401 | || cu->language == language_d |
13402 | || cu->language == language_rust) | |
63d06c5c | 13403 | { |
15d034d0 | 13404 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
13405 | |
13406 | /* dwarf2_full_name might have already finished building the DIE's | |
13407 | type. If so, there is no need to continue. */ | |
13408 | if (get_die_type (die, cu) != NULL) | |
13409 | return get_die_type (die, cu); | |
13410 | ||
13411 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
13412 | if (die->tag == DW_TAG_structure_type |
13413 | || die->tag == DW_TAG_class_type) | |
13414 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
13415 | } |
13416 | else | |
13417 | { | |
d8151005 DJ |
13418 | /* The name is already allocated along with this objfile, so |
13419 | we don't need to duplicate it for the type. */ | |
7d455152 | 13420 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
13421 | if (die->tag == DW_TAG_class_type) |
13422 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 13423 | } |
c906108c SS |
13424 | } |
13425 | ||
13426 | if (die->tag == DW_TAG_structure_type) | |
13427 | { | |
13428 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
13429 | } | |
13430 | else if (die->tag == DW_TAG_union_type) | |
13431 | { | |
13432 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
13433 | } | |
13434 | else | |
13435 | { | |
4753d33b | 13436 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
13437 | } |
13438 | ||
0cc2414c TT |
13439 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
13440 | TYPE_DECLARED_CLASS (type) = 1; | |
13441 | ||
e142c38c | 13442 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13443 | if (attr) |
13444 | { | |
155bfbd3 JB |
13445 | if (attr_form_is_constant (attr)) |
13446 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13447 | else | |
13448 | { | |
13449 | /* For the moment, dynamic type sizes are not supported | |
13450 | by GDB's struct type. The actual size is determined | |
13451 | on-demand when resolving the type of a given object, | |
13452 | so set the type's length to zero for now. Otherwise, | |
13453 | we record an expression as the length, and that expression | |
13454 | could lead to a very large value, which could eventually | |
13455 | lead to us trying to allocate that much memory when creating | |
13456 | a value of that type. */ | |
13457 | TYPE_LENGTH (type) = 0; | |
13458 | } | |
c906108c SS |
13459 | } |
13460 | else | |
13461 | { | |
13462 | TYPE_LENGTH (type) = 0; | |
13463 | } | |
13464 | ||
422b1cb0 | 13465 | if (producer_is_icc (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 JK |
13466 | { |
13467 | /* ICC does not output the required DW_AT_declaration | |
13468 | on incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 13469 | TYPE_STUB (type) = 1; |
685b1105 JK |
13470 | } |
13471 | else | |
13472 | TYPE_STUB_SUPPORTED (type) = 1; | |
13473 | ||
dc718098 | 13474 | if (die_is_declaration (die, cu)) |
876cecd0 | 13475 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
13476 | else if (attr == NULL && die->child == NULL |
13477 | && producer_is_realview (cu->producer)) | |
13478 | /* RealView does not output the required DW_AT_declaration | |
13479 | on incomplete types. */ | |
13480 | TYPE_STUB (type) = 1; | |
dc718098 | 13481 | |
c906108c SS |
13482 | /* We need to add the type field to the die immediately so we don't |
13483 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 13484 | type within the structure itself. */ |
1c379e20 | 13485 | set_die_type (die, type, cu); |
c906108c | 13486 | |
7e314c57 JK |
13487 | /* set_die_type should be already done. */ |
13488 | set_descriptive_type (type, die, cu); | |
13489 | ||
c767944b DJ |
13490 | return type; |
13491 | } | |
13492 | ||
13493 | /* Finish creating a structure or union type, including filling in | |
13494 | its members and creating a symbol for it. */ | |
13495 | ||
13496 | static void | |
13497 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13498 | { | |
13499 | struct objfile *objfile = cu->objfile; | |
ca040673 | 13500 | struct die_info *child_die; |
c767944b DJ |
13501 | struct type *type; |
13502 | ||
13503 | type = get_die_type (die, cu); | |
13504 | if (type == NULL) | |
13505 | type = read_structure_type (die, cu); | |
13506 | ||
e142c38c | 13507 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
13508 | { |
13509 | struct field_info fi; | |
34eaf542 | 13510 | VEC (symbolp) *template_args = NULL; |
c767944b | 13511 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
13512 | |
13513 | memset (&fi, 0, sizeof (struct field_info)); | |
13514 | ||
639d11d3 | 13515 | child_die = die->child; |
c906108c SS |
13516 | |
13517 | while (child_die && child_die->tag) | |
13518 | { | |
a9a9bd0f DC |
13519 | if (child_die->tag == DW_TAG_member |
13520 | || child_die->tag == DW_TAG_variable) | |
c906108c | 13521 | { |
a9a9bd0f DC |
13522 | /* NOTE: carlton/2002-11-05: A C++ static data member |
13523 | should be a DW_TAG_member that is a declaration, but | |
13524 | all versions of G++ as of this writing (so through at | |
13525 | least 3.2.1) incorrectly generate DW_TAG_variable | |
13526 | tags for them instead. */ | |
e7c27a73 | 13527 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13528 | } |
8713b1b1 | 13529 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 13530 | { |
e98c9e7c TT |
13531 | /* Rust doesn't have member functions in the C++ sense. |
13532 | However, it does emit ordinary functions as children | |
13533 | of a struct DIE. */ | |
13534 | if (cu->language == language_rust) | |
13535 | read_func_scope (child_die, cu); | |
13536 | else | |
13537 | { | |
13538 | /* C++ member function. */ | |
13539 | dwarf2_add_member_fn (&fi, child_die, type, cu); | |
13540 | } | |
c906108c SS |
13541 | } |
13542 | else if (child_die->tag == DW_TAG_inheritance) | |
13543 | { | |
13544 | /* C++ base class field. */ | |
e7c27a73 | 13545 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13546 | } |
98751a41 JK |
13547 | else if (child_die->tag == DW_TAG_typedef) |
13548 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
13549 | else if (child_die->tag == DW_TAG_template_type_param |
13550 | || child_die->tag == DW_TAG_template_value_param) | |
13551 | { | |
13552 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13553 | ||
f1078f66 DJ |
13554 | if (arg != NULL) |
13555 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
13556 | } |
13557 | ||
c906108c SS |
13558 | child_die = sibling_die (child_die); |
13559 | } | |
13560 | ||
34eaf542 TT |
13561 | /* Attach template arguments to type. */ |
13562 | if (! VEC_empty (symbolp, template_args)) | |
13563 | { | |
13564 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
13565 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13566 | = VEC_length (symbolp, template_args); | |
13567 | TYPE_TEMPLATE_ARGUMENTS (type) | |
8d749320 SM |
13568 | = XOBNEWVEC (&objfile->objfile_obstack, |
13569 | struct symbol *, | |
13570 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 TT |
13571 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
13572 | VEC_address (symbolp, template_args), | |
13573 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13574 | * sizeof (struct symbol *))); | |
13575 | VEC_free (symbolp, template_args); | |
13576 | } | |
13577 | ||
c906108c SS |
13578 | /* Attach fields and member functions to the type. */ |
13579 | if (fi.nfields) | |
e7c27a73 | 13580 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
13581 | if (fi.nfnfields) |
13582 | { | |
e7c27a73 | 13583 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 13584 | |
c5aa993b | 13585 | /* Get the type which refers to the base class (possibly this |
c906108c | 13586 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
13587 | class from the DW_AT_containing_type attribute. This use of |
13588 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 13589 | |
e142c38c | 13590 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 13591 | { |
e7c27a73 | 13592 | struct type *t = die_containing_type (die, cu); |
c906108c | 13593 | |
ae6ae975 | 13594 | set_type_vptr_basetype (type, t); |
c906108c SS |
13595 | if (type == t) |
13596 | { | |
c906108c SS |
13597 | int i; |
13598 | ||
13599 | /* Our own class provides vtbl ptr. */ | |
13600 | for (i = TYPE_NFIELDS (t) - 1; | |
13601 | i >= TYPE_N_BASECLASSES (t); | |
13602 | --i) | |
13603 | { | |
0d5cff50 | 13604 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 13605 | |
1168df01 | 13606 | if (is_vtable_name (fieldname, cu)) |
c906108c | 13607 | { |
ae6ae975 | 13608 | set_type_vptr_fieldno (type, i); |
c906108c SS |
13609 | break; |
13610 | } | |
13611 | } | |
13612 | ||
13613 | /* Complain if virtual function table field not found. */ | |
13614 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 13615 | complaint (&symfile_complaints, |
3e43a32a MS |
13616 | _("virtual function table pointer " |
13617 | "not found when defining class '%s'"), | |
4d3c2250 KB |
13618 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
13619 | ""); | |
c906108c SS |
13620 | } |
13621 | else | |
13622 | { | |
ae6ae975 | 13623 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
13624 | } |
13625 | } | |
f6235d4c | 13626 | else if (cu->producer |
61012eef | 13627 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
13628 | { |
13629 | /* The IBM XLC compiler does not provide direct indication | |
13630 | of the containing type, but the vtable pointer is | |
13631 | always named __vfp. */ | |
13632 | ||
13633 | int i; | |
13634 | ||
13635 | for (i = TYPE_NFIELDS (type) - 1; | |
13636 | i >= TYPE_N_BASECLASSES (type); | |
13637 | --i) | |
13638 | { | |
13639 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
13640 | { | |
ae6ae975 DE |
13641 | set_type_vptr_fieldno (type, i); |
13642 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
13643 | break; |
13644 | } | |
13645 | } | |
13646 | } | |
c906108c | 13647 | } |
98751a41 JK |
13648 | |
13649 | /* Copy fi.typedef_field_list linked list elements content into the | |
13650 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
13651 | if (fi.typedef_field_list) | |
13652 | { | |
13653 | int i = fi.typedef_field_list_count; | |
13654 | ||
a0d7a4ff | 13655 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 13656 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
224c3ddb SM |
13657 | = ((struct typedef_field *) |
13658 | TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i)); | |
98751a41 JK |
13659 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; |
13660 | ||
13661 | /* Reverse the list order to keep the debug info elements order. */ | |
13662 | while (--i >= 0) | |
13663 | { | |
13664 | struct typedef_field *dest, *src; | |
6e70227d | 13665 | |
98751a41 JK |
13666 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
13667 | src = &fi.typedef_field_list->field; | |
13668 | fi.typedef_field_list = fi.typedef_field_list->next; | |
13669 | *dest = *src; | |
13670 | } | |
13671 | } | |
c767944b DJ |
13672 | |
13673 | do_cleanups (back_to); | |
c906108c | 13674 | } |
63d06c5c | 13675 | |
bb5ed363 | 13676 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 13677 | |
90aeadfc DC |
13678 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
13679 | snapshots) has been known to create a die giving a declaration | |
13680 | for a class that has, as a child, a die giving a definition for a | |
13681 | nested class. So we have to process our children even if the | |
13682 | current die is a declaration. Normally, of course, a declaration | |
13683 | won't have any children at all. */ | |
134d01f1 | 13684 | |
ca040673 DE |
13685 | child_die = die->child; |
13686 | ||
90aeadfc DC |
13687 | while (child_die != NULL && child_die->tag) |
13688 | { | |
13689 | if (child_die->tag == DW_TAG_member | |
13690 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
13691 | || child_die->tag == DW_TAG_inheritance |
13692 | || child_die->tag == DW_TAG_template_value_param | |
13693 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 13694 | { |
90aeadfc | 13695 | /* Do nothing. */ |
134d01f1 | 13696 | } |
90aeadfc DC |
13697 | else |
13698 | process_die (child_die, cu); | |
134d01f1 | 13699 | |
90aeadfc | 13700 | child_die = sibling_die (child_die); |
134d01f1 DJ |
13701 | } |
13702 | ||
fa4028e9 JB |
13703 | /* Do not consider external references. According to the DWARF standard, |
13704 | these DIEs are identified by the fact that they have no byte_size | |
13705 | attribute, and a declaration attribute. */ | |
13706 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
13707 | || !die_is_declaration (die, cu)) | |
c767944b | 13708 | new_symbol (die, type, cu); |
134d01f1 DJ |
13709 | } |
13710 | ||
55426c9d JB |
13711 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
13712 | update TYPE using some information only available in DIE's children. */ | |
13713 | ||
13714 | static void | |
13715 | update_enumeration_type_from_children (struct die_info *die, | |
13716 | struct type *type, | |
13717 | struct dwarf2_cu *cu) | |
13718 | { | |
13719 | struct obstack obstack; | |
60f7655a | 13720 | struct die_info *child_die; |
55426c9d JB |
13721 | int unsigned_enum = 1; |
13722 | int flag_enum = 1; | |
13723 | ULONGEST mask = 0; | |
13724 | struct cleanup *old_chain; | |
13725 | ||
13726 | obstack_init (&obstack); | |
13727 | old_chain = make_cleanup_obstack_free (&obstack); | |
13728 | ||
60f7655a DE |
13729 | for (child_die = die->child; |
13730 | child_die != NULL && child_die->tag; | |
13731 | child_die = sibling_die (child_die)) | |
55426c9d JB |
13732 | { |
13733 | struct attribute *attr; | |
13734 | LONGEST value; | |
13735 | const gdb_byte *bytes; | |
13736 | struct dwarf2_locexpr_baton *baton; | |
13737 | const char *name; | |
60f7655a | 13738 | |
55426c9d JB |
13739 | if (child_die->tag != DW_TAG_enumerator) |
13740 | continue; | |
13741 | ||
13742 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
13743 | if (attr == NULL) | |
13744 | continue; | |
13745 | ||
13746 | name = dwarf2_name (child_die, cu); | |
13747 | if (name == NULL) | |
13748 | name = "<anonymous enumerator>"; | |
13749 | ||
13750 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
13751 | &value, &bytes, &baton); | |
13752 | if (value < 0) | |
13753 | { | |
13754 | unsigned_enum = 0; | |
13755 | flag_enum = 0; | |
13756 | } | |
13757 | else if ((mask & value) != 0) | |
13758 | flag_enum = 0; | |
13759 | else | |
13760 | mask |= value; | |
13761 | ||
13762 | /* If we already know that the enum type is neither unsigned, nor | |
13763 | a flag type, no need to look at the rest of the enumerates. */ | |
13764 | if (!unsigned_enum && !flag_enum) | |
13765 | break; | |
55426c9d JB |
13766 | } |
13767 | ||
13768 | if (unsigned_enum) | |
13769 | TYPE_UNSIGNED (type) = 1; | |
13770 | if (flag_enum) | |
13771 | TYPE_FLAG_ENUM (type) = 1; | |
13772 | ||
13773 | do_cleanups (old_chain); | |
13774 | } | |
13775 | ||
134d01f1 DJ |
13776 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
13777 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 13778 | |
f792889a | 13779 | static struct type * |
134d01f1 | 13780 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13781 | { |
e7c27a73 | 13782 | struct objfile *objfile = cu->objfile; |
c906108c | 13783 | struct type *type; |
c906108c | 13784 | struct attribute *attr; |
0114d602 | 13785 | const char *name; |
134d01f1 | 13786 | |
348e048f DE |
13787 | /* If the definition of this type lives in .debug_types, read that type. |
13788 | Don't follow DW_AT_specification though, that will take us back up | |
13789 | the chain and we want to go down. */ | |
45e58e77 | 13790 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13791 | if (attr) |
13792 | { | |
ac9ec31b | 13793 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13794 | |
ac9ec31b | 13795 | /* The type's CU may not be the same as CU. |
02142a6c | 13796 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13797 | return set_die_type (die, type, cu); |
13798 | } | |
13799 | ||
c906108c SS |
13800 | type = alloc_type (objfile); |
13801 | ||
13802 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 13803 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 13804 | if (name != NULL) |
7d455152 | 13805 | TYPE_TAG_NAME (type) = name; |
c906108c | 13806 | |
0626fc76 TT |
13807 | attr = dwarf2_attr (die, DW_AT_type, cu); |
13808 | if (attr != NULL) | |
13809 | { | |
13810 | struct type *underlying_type = die_type (die, cu); | |
13811 | ||
13812 | TYPE_TARGET_TYPE (type) = underlying_type; | |
13813 | } | |
13814 | ||
e142c38c | 13815 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13816 | if (attr) |
13817 | { | |
13818 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13819 | } | |
13820 | else | |
13821 | { | |
13822 | TYPE_LENGTH (type) = 0; | |
13823 | } | |
13824 | ||
137033e9 JB |
13825 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
13826 | declared as private in the package spec, and then defined only | |
13827 | inside the package body. Such types are known as Taft Amendment | |
13828 | Types. When another package uses such a type, an incomplete DIE | |
13829 | may be generated by the compiler. */ | |
02eb380e | 13830 | if (die_is_declaration (die, cu)) |
876cecd0 | 13831 | TYPE_STUB (type) = 1; |
02eb380e | 13832 | |
0626fc76 TT |
13833 | /* Finish the creation of this type by using the enum's children. |
13834 | We must call this even when the underlying type has been provided | |
13835 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
13836 | update_enumeration_type_from_children (die, type, cu); |
13837 | ||
0626fc76 TT |
13838 | /* If this type has an underlying type that is not a stub, then we |
13839 | may use its attributes. We always use the "unsigned" attribute | |
13840 | in this situation, because ordinarily we guess whether the type | |
13841 | is unsigned -- but the guess can be wrong and the underlying type | |
13842 | can tell us the reality. However, we defer to a local size | |
13843 | attribute if one exists, because this lets the compiler override | |
13844 | the underlying type if needed. */ | |
13845 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
13846 | { | |
13847 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
13848 | if (TYPE_LENGTH (type) == 0) | |
13849 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
13850 | } | |
13851 | ||
3d567982 TT |
13852 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
13853 | ||
f792889a | 13854 | return set_die_type (die, type, cu); |
134d01f1 DJ |
13855 | } |
13856 | ||
13857 | /* Given a pointer to a die which begins an enumeration, process all | |
13858 | the dies that define the members of the enumeration, and create the | |
13859 | symbol for the enumeration type. | |
13860 | ||
13861 | NOTE: We reverse the order of the element list. */ | |
13862 | ||
13863 | static void | |
13864 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13865 | { | |
f792889a | 13866 | struct type *this_type; |
134d01f1 | 13867 | |
f792889a DJ |
13868 | this_type = get_die_type (die, cu); |
13869 | if (this_type == NULL) | |
13870 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 13871 | |
639d11d3 | 13872 | if (die->child != NULL) |
c906108c | 13873 | { |
9dc481d3 DE |
13874 | struct die_info *child_die; |
13875 | struct symbol *sym; | |
13876 | struct field *fields = NULL; | |
13877 | int num_fields = 0; | |
15d034d0 | 13878 | const char *name; |
9dc481d3 | 13879 | |
639d11d3 | 13880 | child_die = die->child; |
c906108c SS |
13881 | while (child_die && child_die->tag) |
13882 | { | |
13883 | if (child_die->tag != DW_TAG_enumerator) | |
13884 | { | |
e7c27a73 | 13885 | process_die (child_die, cu); |
c906108c SS |
13886 | } |
13887 | else | |
13888 | { | |
39cbfefa DJ |
13889 | name = dwarf2_name (child_die, cu); |
13890 | if (name) | |
c906108c | 13891 | { |
f792889a | 13892 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
13893 | |
13894 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13895 | { | |
13896 | fields = (struct field *) | |
13897 | xrealloc (fields, | |
13898 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13899 | * sizeof (struct field)); |
c906108c SS |
13900 | } |
13901 | ||
3567439c | 13902 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 13903 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 13904 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
13905 | FIELD_BITSIZE (fields[num_fields]) = 0; |
13906 | ||
13907 | num_fields++; | |
13908 | } | |
13909 | } | |
13910 | ||
13911 | child_die = sibling_die (child_die); | |
13912 | } | |
13913 | ||
13914 | if (num_fields) | |
13915 | { | |
f792889a DJ |
13916 | TYPE_NFIELDS (this_type) = num_fields; |
13917 | TYPE_FIELDS (this_type) = (struct field *) | |
13918 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
13919 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 13920 | sizeof (struct field) * num_fields); |
b8c9b27d | 13921 | xfree (fields); |
c906108c | 13922 | } |
c906108c | 13923 | } |
134d01f1 | 13924 | |
6c83ed52 TT |
13925 | /* If we are reading an enum from a .debug_types unit, and the enum |
13926 | is a declaration, and the enum is not the signatured type in the | |
13927 | unit, then we do not want to add a symbol for it. Adding a | |
13928 | symbol would in some cases obscure the true definition of the | |
13929 | enum, giving users an incomplete type when the definition is | |
13930 | actually available. Note that we do not want to do this for all | |
13931 | enums which are just declarations, because C++0x allows forward | |
13932 | enum declarations. */ | |
3019eac3 | 13933 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
13934 | && die_is_declaration (die, cu)) |
13935 | { | |
52dc124a | 13936 | struct signatured_type *sig_type; |
6c83ed52 | 13937 | |
c0f78cd4 | 13938 | sig_type = (struct signatured_type *) cu->per_cu; |
3019eac3 DE |
13939 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
13940 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
13941 | return; |
13942 | } | |
13943 | ||
f792889a | 13944 | new_symbol (die, this_type, cu); |
c906108c SS |
13945 | } |
13946 | ||
13947 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
13948 | the DIE's type field. For now, this only handles one dimensional | |
13949 | arrays. */ | |
13950 | ||
f792889a | 13951 | static struct type * |
e7c27a73 | 13952 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13953 | { |
e7c27a73 | 13954 | struct objfile *objfile = cu->objfile; |
c906108c | 13955 | struct die_info *child_die; |
7e314c57 | 13956 | struct type *type; |
c906108c SS |
13957 | struct type *element_type, *range_type, *index_type; |
13958 | struct type **range_types = NULL; | |
13959 | struct attribute *attr; | |
13960 | int ndim = 0; | |
13961 | struct cleanup *back_to; | |
15d034d0 | 13962 | const char *name; |
dc53a7ad | 13963 | unsigned int bit_stride = 0; |
c906108c | 13964 | |
e7c27a73 | 13965 | element_type = die_type (die, cu); |
c906108c | 13966 | |
7e314c57 JK |
13967 | /* The die_type call above may have already set the type for this DIE. */ |
13968 | type = get_die_type (die, cu); | |
13969 | if (type) | |
13970 | return type; | |
13971 | ||
dc53a7ad JB |
13972 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
13973 | if (attr != NULL) | |
13974 | bit_stride = DW_UNSND (attr) * 8; | |
13975 | ||
13976 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
13977 | if (attr != NULL) | |
13978 | bit_stride = DW_UNSND (attr); | |
13979 | ||
c906108c SS |
13980 | /* Irix 6.2 native cc creates array types without children for |
13981 | arrays with unspecified length. */ | |
639d11d3 | 13982 | if (die->child == NULL) |
c906108c | 13983 | { |
46bf5051 | 13984 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 13985 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad JB |
13986 | type = create_array_type_with_stride (NULL, element_type, range_type, |
13987 | bit_stride); | |
f792889a | 13988 | return set_die_type (die, type, cu); |
c906108c SS |
13989 | } |
13990 | ||
13991 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 13992 | child_die = die->child; |
c906108c SS |
13993 | while (child_die && child_die->tag) |
13994 | { | |
13995 | if (child_die->tag == DW_TAG_subrange_type) | |
13996 | { | |
f792889a | 13997 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 13998 | |
f792889a | 13999 | if (child_type != NULL) |
a02abb62 | 14000 | { |
0963b4bd MS |
14001 | /* The range type was succesfully read. Save it for the |
14002 | array type creation. */ | |
a02abb62 JB |
14003 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
14004 | { | |
14005 | range_types = (struct type **) | |
14006 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
14007 | * sizeof (struct type *)); | |
14008 | if (ndim == 0) | |
14009 | make_cleanup (free_current_contents, &range_types); | |
14010 | } | |
f792889a | 14011 | range_types[ndim++] = child_type; |
a02abb62 | 14012 | } |
c906108c SS |
14013 | } |
14014 | child_die = sibling_die (child_die); | |
14015 | } | |
14016 | ||
14017 | /* Dwarf2 dimensions are output from left to right, create the | |
14018 | necessary array types in backwards order. */ | |
7ca2d3a3 | 14019 | |
c906108c | 14020 | type = element_type; |
7ca2d3a3 DL |
14021 | |
14022 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
14023 | { | |
14024 | int i = 0; | |
9a619af0 | 14025 | |
7ca2d3a3 | 14026 | while (i < ndim) |
dc53a7ad JB |
14027 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
14028 | bit_stride); | |
7ca2d3a3 DL |
14029 | } |
14030 | else | |
14031 | { | |
14032 | while (ndim-- > 0) | |
dc53a7ad JB |
14033 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
14034 | bit_stride); | |
7ca2d3a3 | 14035 | } |
c906108c | 14036 | |
f5f8a009 EZ |
14037 | /* Understand Dwarf2 support for vector types (like they occur on |
14038 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
14039 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
14040 | custom vendor extension. The main difference between a regular | |
14041 | array and the vector variant is that vectors are passed by value | |
14042 | to functions. */ | |
e142c38c | 14043 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 14044 | if (attr) |
ea37ba09 | 14045 | make_vector_type (type); |
f5f8a009 | 14046 | |
dbc98a8b KW |
14047 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
14048 | implementation may choose to implement triple vectors using this | |
14049 | attribute. */ | |
14050 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
14051 | if (attr) | |
14052 | { | |
14053 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
14054 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
14055 | else | |
3e43a32a MS |
14056 | complaint (&symfile_complaints, |
14057 | _("DW_AT_byte_size for array type smaller " | |
14058 | "than the total size of elements")); | |
dbc98a8b KW |
14059 | } |
14060 | ||
39cbfefa DJ |
14061 | name = dwarf2_name (die, cu); |
14062 | if (name) | |
14063 | TYPE_NAME (type) = name; | |
6e70227d | 14064 | |
0963b4bd | 14065 | /* Install the type in the die. */ |
7e314c57 JK |
14066 | set_die_type (die, type, cu); |
14067 | ||
14068 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
14069 | set_descriptive_type (type, die, cu); |
14070 | ||
c906108c SS |
14071 | do_cleanups (back_to); |
14072 | ||
7e314c57 | 14073 | return type; |
c906108c SS |
14074 | } |
14075 | ||
7ca2d3a3 | 14076 | static enum dwarf_array_dim_ordering |
6e70227d | 14077 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
14078 | { |
14079 | struct attribute *attr; | |
14080 | ||
14081 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
14082 | ||
aead7601 SM |
14083 | if (attr) |
14084 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 14085 | |
0963b4bd MS |
14086 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
14087 | opposite order to the dwarf2 specification, but data is still | |
14088 | laid out as per normal fortran. | |
7ca2d3a3 | 14089 | |
0963b4bd MS |
14090 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
14091 | version checking. */ | |
7ca2d3a3 | 14092 | |
905e0470 PM |
14093 | if (cu->language == language_fortran |
14094 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
14095 | { |
14096 | return DW_ORD_row_major; | |
14097 | } | |
14098 | ||
6e70227d | 14099 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
14100 | { |
14101 | case array_column_major: | |
14102 | return DW_ORD_col_major; | |
14103 | case array_row_major: | |
14104 | default: | |
14105 | return DW_ORD_row_major; | |
14106 | }; | |
14107 | } | |
14108 | ||
72019c9c | 14109 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 14110 | the DIE's type field. */ |
72019c9c | 14111 | |
f792889a | 14112 | static struct type * |
72019c9c GM |
14113 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
14114 | { | |
7e314c57 JK |
14115 | struct type *domain_type, *set_type; |
14116 | struct attribute *attr; | |
f792889a | 14117 | |
7e314c57 JK |
14118 | domain_type = die_type (die, cu); |
14119 | ||
14120 | /* The die_type call above may have already set the type for this DIE. */ | |
14121 | set_type = get_die_type (die, cu); | |
14122 | if (set_type) | |
14123 | return set_type; | |
14124 | ||
14125 | set_type = create_set_type (NULL, domain_type); | |
14126 | ||
14127 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
14128 | if (attr) |
14129 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 14130 | |
f792889a | 14131 | return set_die_type (die, set_type, cu); |
72019c9c | 14132 | } |
7ca2d3a3 | 14133 | |
0971de02 TT |
14134 | /* A helper for read_common_block that creates a locexpr baton. |
14135 | SYM is the symbol which we are marking as computed. | |
14136 | COMMON_DIE is the DIE for the common block. | |
14137 | COMMON_LOC is the location expression attribute for the common | |
14138 | block itself. | |
14139 | MEMBER_LOC is the location expression attribute for the particular | |
14140 | member of the common block that we are processing. | |
14141 | CU is the CU from which the above come. */ | |
14142 | ||
14143 | static void | |
14144 | mark_common_block_symbol_computed (struct symbol *sym, | |
14145 | struct die_info *common_die, | |
14146 | struct attribute *common_loc, | |
14147 | struct attribute *member_loc, | |
14148 | struct dwarf2_cu *cu) | |
14149 | { | |
14150 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
14151 | struct dwarf2_locexpr_baton *baton; | |
14152 | gdb_byte *ptr; | |
14153 | unsigned int cu_off; | |
14154 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
14155 | LONGEST offset = 0; | |
14156 | ||
14157 | gdb_assert (common_loc && member_loc); | |
14158 | gdb_assert (attr_form_is_block (common_loc)); | |
14159 | gdb_assert (attr_form_is_block (member_loc) | |
14160 | || attr_form_is_constant (member_loc)); | |
14161 | ||
8d749320 | 14162 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
14163 | baton->per_cu = cu->per_cu; |
14164 | gdb_assert (baton->per_cu); | |
14165 | ||
14166 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
14167 | ||
14168 | if (attr_form_is_constant (member_loc)) | |
14169 | { | |
14170 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
14171 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
14172 | } | |
14173 | else | |
14174 | baton->size += DW_BLOCK (member_loc)->size; | |
14175 | ||
224c3ddb | 14176 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
14177 | baton->data = ptr; |
14178 | ||
14179 | *ptr++ = DW_OP_call4; | |
14180 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
14181 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
14182 | ptr += 4; | |
14183 | ||
14184 | if (attr_form_is_constant (member_loc)) | |
14185 | { | |
14186 | *ptr++ = DW_OP_addr; | |
14187 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
14188 | ptr += cu->header.addr_size; | |
14189 | } | |
14190 | else | |
14191 | { | |
14192 | /* We have to copy the data here, because DW_OP_call4 will only | |
14193 | use a DW_AT_location attribute. */ | |
14194 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
14195 | ptr += DW_BLOCK (member_loc)->size; | |
14196 | } | |
14197 | ||
14198 | *ptr++ = DW_OP_plus; | |
14199 | gdb_assert (ptr - baton->data == baton->size); | |
14200 | ||
0971de02 | 14201 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 14202 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
14203 | } |
14204 | ||
4357ac6c TT |
14205 | /* Create appropriate locally-scoped variables for all the |
14206 | DW_TAG_common_block entries. Also create a struct common_block | |
14207 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
14208 | is used to sepate the common blocks name namespace from regular | |
14209 | variable names. */ | |
c906108c SS |
14210 | |
14211 | static void | |
e7c27a73 | 14212 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14213 | { |
0971de02 TT |
14214 | struct attribute *attr; |
14215 | ||
14216 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
14217 | if (attr) | |
14218 | { | |
14219 | /* Support the .debug_loc offsets. */ | |
14220 | if (attr_form_is_block (attr)) | |
14221 | { | |
14222 | /* Ok. */ | |
14223 | } | |
14224 | else if (attr_form_is_section_offset (attr)) | |
14225 | { | |
14226 | dwarf2_complex_location_expr_complaint (); | |
14227 | attr = NULL; | |
14228 | } | |
14229 | else | |
14230 | { | |
14231 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
14232 | "common block member"); | |
14233 | attr = NULL; | |
14234 | } | |
14235 | } | |
14236 | ||
639d11d3 | 14237 | if (die->child != NULL) |
c906108c | 14238 | { |
4357ac6c TT |
14239 | struct objfile *objfile = cu->objfile; |
14240 | struct die_info *child_die; | |
14241 | size_t n_entries = 0, size; | |
14242 | struct common_block *common_block; | |
14243 | struct symbol *sym; | |
74ac6d43 | 14244 | |
4357ac6c TT |
14245 | for (child_die = die->child; |
14246 | child_die && child_die->tag; | |
14247 | child_die = sibling_die (child_die)) | |
14248 | ++n_entries; | |
14249 | ||
14250 | size = (sizeof (struct common_block) | |
14251 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
14252 | common_block |
14253 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
14254 | size); | |
4357ac6c TT |
14255 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
14256 | common_block->n_entries = 0; | |
14257 | ||
14258 | for (child_die = die->child; | |
14259 | child_die && child_die->tag; | |
14260 | child_die = sibling_die (child_die)) | |
14261 | { | |
14262 | /* Create the symbol in the DW_TAG_common_block block in the current | |
14263 | symbol scope. */ | |
e7c27a73 | 14264 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
14265 | if (sym != NULL) |
14266 | { | |
14267 | struct attribute *member_loc; | |
14268 | ||
14269 | common_block->contents[common_block->n_entries++] = sym; | |
14270 | ||
14271 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
14272 | cu); | |
14273 | if (member_loc) | |
14274 | { | |
14275 | /* GDB has handled this for a long time, but it is | |
14276 | not specified by DWARF. It seems to have been | |
14277 | emitted by gfortran at least as recently as: | |
14278 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
14279 | complaint (&symfile_complaints, | |
14280 | _("Variable in common block has " | |
14281 | "DW_AT_data_member_location " | |
14282 | "- DIE at 0x%x [in module %s]"), | |
4262abfb JK |
14283 | child_die->offset.sect_off, |
14284 | objfile_name (cu->objfile)); | |
0971de02 TT |
14285 | |
14286 | if (attr_form_is_section_offset (member_loc)) | |
14287 | dwarf2_complex_location_expr_complaint (); | |
14288 | else if (attr_form_is_constant (member_loc) | |
14289 | || attr_form_is_block (member_loc)) | |
14290 | { | |
14291 | if (attr) | |
14292 | mark_common_block_symbol_computed (sym, die, attr, | |
14293 | member_loc, cu); | |
14294 | } | |
14295 | else | |
14296 | dwarf2_complex_location_expr_complaint (); | |
14297 | } | |
14298 | } | |
c906108c | 14299 | } |
4357ac6c TT |
14300 | |
14301 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
14302 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
14303 | } |
14304 | } | |
14305 | ||
0114d602 | 14306 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 14307 | |
0114d602 DJ |
14308 | static struct type * |
14309 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 14310 | { |
e7c27a73 | 14311 | struct objfile *objfile = cu->objfile; |
0114d602 | 14312 | const char *previous_prefix, *name; |
9219021c | 14313 | int is_anonymous; |
0114d602 DJ |
14314 | struct type *type; |
14315 | ||
14316 | /* For extensions, reuse the type of the original namespace. */ | |
14317 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
14318 | { | |
14319 | struct die_info *ext_die; | |
14320 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 14321 | |
0114d602 DJ |
14322 | ext_die = dwarf2_extension (die, &ext_cu); |
14323 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
14324 | |
14325 | /* EXT_CU may not be the same as CU. | |
02142a6c | 14326 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
14327 | return set_die_type (die, type, cu); |
14328 | } | |
9219021c | 14329 | |
e142c38c | 14330 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
14331 | |
14332 | /* Now build the name of the current namespace. */ | |
14333 | ||
0114d602 DJ |
14334 | previous_prefix = determine_prefix (die, cu); |
14335 | if (previous_prefix[0] != '\0') | |
14336 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 14337 | previous_prefix, name, 0, cu); |
0114d602 DJ |
14338 | |
14339 | /* Create the type. */ | |
19f392bc | 14340 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 DJ |
14341 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
14342 | ||
60531b24 | 14343 | return set_die_type (die, type, cu); |
0114d602 DJ |
14344 | } |
14345 | ||
22cee43f | 14346 | /* Read a namespace scope. */ |
0114d602 DJ |
14347 | |
14348 | static void | |
14349 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
14350 | { | |
14351 | struct objfile *objfile = cu->objfile; | |
0114d602 | 14352 | int is_anonymous; |
9219021c | 14353 | |
5c4e30ca DC |
14354 | /* Add a symbol associated to this if we haven't seen the namespace |
14355 | before. Also, add a using directive if it's an anonymous | |
14356 | namespace. */ | |
9219021c | 14357 | |
f2f0e013 | 14358 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
14359 | { |
14360 | struct type *type; | |
14361 | ||
0114d602 | 14362 | type = read_type_die (die, cu); |
e7c27a73 | 14363 | new_symbol (die, type, cu); |
5c4e30ca | 14364 | |
e8e80198 | 14365 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 14366 | if (is_anonymous) |
0114d602 DJ |
14367 | { |
14368 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 14369 | |
22cee43f PMR |
14370 | add_using_directive (using_directives (cu->language), |
14371 | previous_prefix, TYPE_NAME (type), NULL, | |
14372 | NULL, NULL, 0, &objfile->objfile_obstack); | |
0114d602 | 14373 | } |
5c4e30ca | 14374 | } |
9219021c | 14375 | |
639d11d3 | 14376 | if (die->child != NULL) |
d9fa45fe | 14377 | { |
639d11d3 | 14378 | struct die_info *child_die = die->child; |
6e70227d | 14379 | |
d9fa45fe DC |
14380 | while (child_die && child_die->tag) |
14381 | { | |
e7c27a73 | 14382 | process_die (child_die, cu); |
d9fa45fe DC |
14383 | child_die = sibling_die (child_die); |
14384 | } | |
14385 | } | |
38d518c9 EZ |
14386 | } |
14387 | ||
f55ee35c JK |
14388 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
14389 | imported module. Still we need that type as local Fortran "use ... only" | |
14390 | declaration imports depend on the created type in determine_prefix. */ | |
14391 | ||
14392 | static struct type * | |
14393 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
14394 | { | |
14395 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 14396 | const char *module_name; |
f55ee35c JK |
14397 | struct type *type; |
14398 | ||
14399 | module_name = dwarf2_name (die, cu); | |
14400 | if (!module_name) | |
3e43a32a MS |
14401 | complaint (&symfile_complaints, |
14402 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 14403 | die->offset.sect_off); |
19f392bc | 14404 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c JK |
14405 | |
14406 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
14407 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
14408 | ||
14409 | return set_die_type (die, type, cu); | |
14410 | } | |
14411 | ||
5d7cb8df JK |
14412 | /* Read a Fortran module. */ |
14413 | ||
14414 | static void | |
14415 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
14416 | { | |
14417 | struct die_info *child_die = die->child; | |
530e8392 KB |
14418 | struct type *type; |
14419 | ||
14420 | type = read_type_die (die, cu); | |
14421 | new_symbol (die, type, cu); | |
5d7cb8df | 14422 | |
5d7cb8df JK |
14423 | while (child_die && child_die->tag) |
14424 | { | |
14425 | process_die (child_die, cu); | |
14426 | child_die = sibling_die (child_die); | |
14427 | } | |
14428 | } | |
14429 | ||
38d518c9 EZ |
14430 | /* Return the name of the namespace represented by DIE. Set |
14431 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
14432 | namespace. */ | |
14433 | ||
14434 | static const char * | |
e142c38c | 14435 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
14436 | { |
14437 | struct die_info *current_die; | |
14438 | const char *name = NULL; | |
14439 | ||
14440 | /* Loop through the extensions until we find a name. */ | |
14441 | ||
14442 | for (current_die = die; | |
14443 | current_die != NULL; | |
f2f0e013 | 14444 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 14445 | { |
96553a0c DE |
14446 | /* We don't use dwarf2_name here so that we can detect the absence |
14447 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 14448 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 14449 | |
38d518c9 EZ |
14450 | if (name != NULL) |
14451 | break; | |
14452 | } | |
14453 | ||
14454 | /* Is it an anonymous namespace? */ | |
14455 | ||
14456 | *is_anonymous = (name == NULL); | |
14457 | if (*is_anonymous) | |
2b1dbab0 | 14458 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
14459 | |
14460 | return name; | |
d9fa45fe DC |
14461 | } |
14462 | ||
c906108c SS |
14463 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
14464 | the user defined type vector. */ | |
14465 | ||
f792889a | 14466 | static struct type * |
e7c27a73 | 14467 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14468 | { |
5e2b427d | 14469 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 14470 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 14471 | struct type *type; |
8b2dbe47 KB |
14472 | struct attribute *attr_byte_size; |
14473 | struct attribute *attr_address_class; | |
14474 | int byte_size, addr_class; | |
7e314c57 JK |
14475 | struct type *target_type; |
14476 | ||
14477 | target_type = die_type (die, cu); | |
c906108c | 14478 | |
7e314c57 JK |
14479 | /* The die_type call above may have already set the type for this DIE. */ |
14480 | type = get_die_type (die, cu); | |
14481 | if (type) | |
14482 | return type; | |
14483 | ||
14484 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 14485 | |
e142c38c | 14486 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
14487 | if (attr_byte_size) |
14488 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 14489 | else |
8b2dbe47 KB |
14490 | byte_size = cu_header->addr_size; |
14491 | ||
e142c38c | 14492 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
14493 | if (attr_address_class) |
14494 | addr_class = DW_UNSND (attr_address_class); | |
14495 | else | |
14496 | addr_class = DW_ADDR_none; | |
14497 | ||
14498 | /* If the pointer size or address class is different than the | |
14499 | default, create a type variant marked as such and set the | |
14500 | length accordingly. */ | |
14501 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 14502 | { |
5e2b427d | 14503 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
14504 | { |
14505 | int type_flags; | |
14506 | ||
849957d9 | 14507 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 14508 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
14509 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
14510 | == 0); | |
8b2dbe47 KB |
14511 | type = make_type_with_address_space (type, type_flags); |
14512 | } | |
14513 | else if (TYPE_LENGTH (type) != byte_size) | |
14514 | { | |
3e43a32a MS |
14515 | complaint (&symfile_complaints, |
14516 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 14517 | } |
6e70227d | 14518 | else |
9a619af0 MS |
14519 | { |
14520 | /* Should we also complain about unhandled address classes? */ | |
14521 | } | |
c906108c | 14522 | } |
8b2dbe47 KB |
14523 | |
14524 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 14525 | return set_die_type (die, type, cu); |
c906108c SS |
14526 | } |
14527 | ||
14528 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
14529 | the user defined type vector. */ | |
14530 | ||
f792889a | 14531 | static struct type * |
e7c27a73 | 14532 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
14533 | { |
14534 | struct type *type; | |
14535 | struct type *to_type; | |
14536 | struct type *domain; | |
14537 | ||
e7c27a73 DJ |
14538 | to_type = die_type (die, cu); |
14539 | domain = die_containing_type (die, cu); | |
0d5de010 | 14540 | |
7e314c57 JK |
14541 | /* The calls above may have already set the type for this DIE. */ |
14542 | type = get_die_type (die, cu); | |
14543 | if (type) | |
14544 | return type; | |
14545 | ||
0d5de010 DJ |
14546 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
14547 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
14548 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
14549 | { | |
14550 | struct type *new_type = alloc_type (cu->objfile); | |
14551 | ||
14552 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
14553 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
14554 | TYPE_VARARGS (to_type)); | |
14555 | type = lookup_methodptr_type (new_type); | |
14556 | } | |
0d5de010 DJ |
14557 | else |
14558 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 14559 | |
f792889a | 14560 | return set_die_type (die, type, cu); |
c906108c SS |
14561 | } |
14562 | ||
14563 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
14564 | the user defined type vector. */ | |
14565 | ||
f792889a | 14566 | static struct type * |
e7c27a73 | 14567 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14568 | { |
e7c27a73 | 14569 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 14570 | struct type *type, *target_type; |
c906108c SS |
14571 | struct attribute *attr; |
14572 | ||
7e314c57 JK |
14573 | target_type = die_type (die, cu); |
14574 | ||
14575 | /* The die_type call above may have already set the type for this DIE. */ | |
14576 | type = get_die_type (die, cu); | |
14577 | if (type) | |
14578 | return type; | |
14579 | ||
14580 | type = lookup_reference_type (target_type); | |
e142c38c | 14581 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14582 | if (attr) |
14583 | { | |
14584 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
14585 | } | |
14586 | else | |
14587 | { | |
107d2387 | 14588 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 14589 | } |
f792889a | 14590 | return set_die_type (die, type, cu); |
c906108c SS |
14591 | } |
14592 | ||
cf363f18 MW |
14593 | /* Add the given cv-qualifiers to the element type of the array. GCC |
14594 | outputs DWARF type qualifiers that apply to an array, not the | |
14595 | element type. But GDB relies on the array element type to carry | |
14596 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
14597 | specification. */ | |
14598 | ||
14599 | static struct type * | |
14600 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
14601 | struct type *base_type, int cnst, int voltl) | |
14602 | { | |
14603 | struct type *el_type, *inner_array; | |
14604 | ||
14605 | base_type = copy_type (base_type); | |
14606 | inner_array = base_type; | |
14607 | ||
14608 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
14609 | { | |
14610 | TYPE_TARGET_TYPE (inner_array) = | |
14611 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
14612 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
14613 | } | |
14614 | ||
14615 | el_type = TYPE_TARGET_TYPE (inner_array); | |
14616 | cnst |= TYPE_CONST (el_type); | |
14617 | voltl |= TYPE_VOLATILE (el_type); | |
14618 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
14619 | ||
14620 | return set_die_type (die, base_type, cu); | |
14621 | } | |
14622 | ||
f792889a | 14623 | static struct type * |
e7c27a73 | 14624 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14625 | { |
f792889a | 14626 | struct type *base_type, *cv_type; |
c906108c | 14627 | |
e7c27a73 | 14628 | base_type = die_type (die, cu); |
7e314c57 JK |
14629 | |
14630 | /* The die_type call above may have already set the type for this DIE. */ | |
14631 | cv_type = get_die_type (die, cu); | |
14632 | if (cv_type) | |
14633 | return cv_type; | |
14634 | ||
2f608a3a KW |
14635 | /* In case the const qualifier is applied to an array type, the element type |
14636 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
14637 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 14638 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 14639 | |
f792889a DJ |
14640 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
14641 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14642 | } |
14643 | ||
f792889a | 14644 | static struct type * |
e7c27a73 | 14645 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14646 | { |
f792889a | 14647 | struct type *base_type, *cv_type; |
c906108c | 14648 | |
e7c27a73 | 14649 | base_type = die_type (die, cu); |
7e314c57 JK |
14650 | |
14651 | /* The die_type call above may have already set the type for this DIE. */ | |
14652 | cv_type = get_die_type (die, cu); | |
14653 | if (cv_type) | |
14654 | return cv_type; | |
14655 | ||
cf363f18 MW |
14656 | /* In case the volatile qualifier is applied to an array type, the |
14657 | element type is so qualified, not the array type (section 6.7.3 | |
14658 | of C99). */ | |
14659 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
14660 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
14661 | ||
f792889a DJ |
14662 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
14663 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14664 | } |
14665 | ||
06d66ee9 TT |
14666 | /* Handle DW_TAG_restrict_type. */ |
14667 | ||
14668 | static struct type * | |
14669 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
14670 | { | |
14671 | struct type *base_type, *cv_type; | |
14672 | ||
14673 | base_type = die_type (die, cu); | |
14674 | ||
14675 | /* The die_type call above may have already set the type for this DIE. */ | |
14676 | cv_type = get_die_type (die, cu); | |
14677 | if (cv_type) | |
14678 | return cv_type; | |
14679 | ||
14680 | cv_type = make_restrict_type (base_type); | |
14681 | return set_die_type (die, cv_type, cu); | |
14682 | } | |
14683 | ||
a2c2acaf MW |
14684 | /* Handle DW_TAG_atomic_type. */ |
14685 | ||
14686 | static struct type * | |
14687 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
14688 | { | |
14689 | struct type *base_type, *cv_type; | |
14690 | ||
14691 | base_type = die_type (die, cu); | |
14692 | ||
14693 | /* The die_type call above may have already set the type for this DIE. */ | |
14694 | cv_type = get_die_type (die, cu); | |
14695 | if (cv_type) | |
14696 | return cv_type; | |
14697 | ||
14698 | cv_type = make_atomic_type (base_type); | |
14699 | return set_die_type (die, cv_type, cu); | |
14700 | } | |
14701 | ||
c906108c SS |
14702 | /* Extract all information from a DW_TAG_string_type DIE and add to |
14703 | the user defined type vector. It isn't really a user defined type, | |
14704 | but it behaves like one, with other DIE's using an AT_user_def_type | |
14705 | attribute to reference it. */ | |
14706 | ||
f792889a | 14707 | static struct type * |
e7c27a73 | 14708 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14709 | { |
e7c27a73 | 14710 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 14711 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14712 | struct type *type, *range_type, *index_type, *char_type; |
14713 | struct attribute *attr; | |
14714 | unsigned int length; | |
14715 | ||
e142c38c | 14716 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
14717 | if (attr) |
14718 | { | |
14719 | length = DW_UNSND (attr); | |
14720 | } | |
14721 | else | |
14722 | { | |
0963b4bd | 14723 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 14724 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
14725 | if (attr) |
14726 | { | |
14727 | length = DW_UNSND (attr); | |
14728 | } | |
14729 | else | |
14730 | { | |
14731 | length = 1; | |
14732 | } | |
c906108c | 14733 | } |
6ccb9162 | 14734 | |
46bf5051 | 14735 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 14736 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
14737 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
14738 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 14739 | |
f792889a | 14740 | return set_die_type (die, type, cu); |
c906108c SS |
14741 | } |
14742 | ||
4d804846 JB |
14743 | /* Assuming that DIE corresponds to a function, returns nonzero |
14744 | if the function is prototyped. */ | |
14745 | ||
14746 | static int | |
14747 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
14748 | { | |
14749 | struct attribute *attr; | |
14750 | ||
14751 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
14752 | if (attr && (DW_UNSND (attr) != 0)) | |
14753 | return 1; | |
14754 | ||
14755 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
14756 | is only meaninful for C, but the concept also extends to other | |
14757 | languages that allow unprototyped functions (Eg: Objective C). | |
14758 | For all other languages, assume that functions are always | |
14759 | prototyped. */ | |
14760 | if (cu->language != language_c | |
14761 | && cu->language != language_objc | |
14762 | && cu->language != language_opencl) | |
14763 | return 1; | |
14764 | ||
14765 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
14766 | prototyped and unprototyped functions; default to prototyped, | |
14767 | since that is more common in modern code (and RealView warns | |
14768 | about unprototyped functions). */ | |
14769 | if (producer_is_realview (cu->producer)) | |
14770 | return 1; | |
14771 | ||
14772 | return 0; | |
14773 | } | |
14774 | ||
c906108c SS |
14775 | /* Handle DIES due to C code like: |
14776 | ||
14777 | struct foo | |
c5aa993b JM |
14778 | { |
14779 | int (*funcp)(int a, long l); | |
14780 | int b; | |
14781 | }; | |
c906108c | 14782 | |
0963b4bd | 14783 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 14784 | |
f792889a | 14785 | static struct type * |
e7c27a73 | 14786 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14787 | { |
bb5ed363 | 14788 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
14789 | struct type *type; /* Type that this function returns. */ |
14790 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
14791 | struct attribute *attr; |
14792 | ||
e7c27a73 | 14793 | type = die_type (die, cu); |
7e314c57 JK |
14794 | |
14795 | /* The die_type call above may have already set the type for this DIE. */ | |
14796 | ftype = get_die_type (die, cu); | |
14797 | if (ftype) | |
14798 | return ftype; | |
14799 | ||
0c8b41f1 | 14800 | ftype = lookup_function_type (type); |
c906108c | 14801 | |
4d804846 | 14802 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 14803 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 14804 | |
c055b101 CV |
14805 | /* Store the calling convention in the type if it's available in |
14806 | the subroutine die. Otherwise set the calling convention to | |
14807 | the default value DW_CC_normal. */ | |
14808 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
14809 | if (attr) |
14810 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
14811 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
14812 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
14813 | else | |
14814 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 14815 | |
743649fd MW |
14816 | /* Record whether the function returns normally to its caller or not |
14817 | if the DWARF producer set that information. */ | |
14818 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
14819 | if (attr && (DW_UNSND (attr) != 0)) | |
14820 | TYPE_NO_RETURN (ftype) = 1; | |
14821 | ||
76c10ea2 GM |
14822 | /* We need to add the subroutine type to the die immediately so |
14823 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 14824 | declared as the same subroutine type. */ |
76c10ea2 | 14825 | set_die_type (die, ftype, cu); |
6e70227d | 14826 | |
639d11d3 | 14827 | if (die->child != NULL) |
c906108c | 14828 | { |
bb5ed363 | 14829 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 14830 | struct die_info *child_die; |
8072405b | 14831 | int nparams, iparams; |
c906108c SS |
14832 | |
14833 | /* Count the number of parameters. | |
14834 | FIXME: GDB currently ignores vararg functions, but knows about | |
14835 | vararg member functions. */ | |
8072405b | 14836 | nparams = 0; |
639d11d3 | 14837 | child_die = die->child; |
c906108c SS |
14838 | while (child_die && child_die->tag) |
14839 | { | |
14840 | if (child_die->tag == DW_TAG_formal_parameter) | |
14841 | nparams++; | |
14842 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 14843 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
14844 | child_die = sibling_die (child_die); |
14845 | } | |
14846 | ||
14847 | /* Allocate storage for parameters and fill them in. */ | |
14848 | TYPE_NFIELDS (ftype) = nparams; | |
14849 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 14850 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 14851 | |
8072405b JK |
14852 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
14853 | even if we error out during the parameters reading below. */ | |
14854 | for (iparams = 0; iparams < nparams; iparams++) | |
14855 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
14856 | ||
14857 | iparams = 0; | |
639d11d3 | 14858 | child_die = die->child; |
c906108c SS |
14859 | while (child_die && child_die->tag) |
14860 | { | |
14861 | if (child_die->tag == DW_TAG_formal_parameter) | |
14862 | { | |
3ce3b1ba PA |
14863 | struct type *arg_type; |
14864 | ||
14865 | /* DWARF version 2 has no clean way to discern C++ | |
14866 | static and non-static member functions. G++ helps | |
14867 | GDB by marking the first parameter for non-static | |
14868 | member functions (which is the this pointer) as | |
14869 | artificial. We pass this information to | |
14870 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
14871 | ||
14872 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
14873 | 4.5 does not yet generate. */ | |
e142c38c | 14874 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
14875 | if (attr) |
14876 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
14877 | else | |
9c37b5ae | 14878 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
14879 | arg_type = die_type (child_die, cu); |
14880 | ||
14881 | /* RealView does not mark THIS as const, which the testsuite | |
14882 | expects. GCC marks THIS as const in method definitions, | |
14883 | but not in the class specifications (GCC PR 43053). */ | |
14884 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
14885 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
14886 | { | |
14887 | int is_this = 0; | |
14888 | struct dwarf2_cu *arg_cu = cu; | |
14889 | const char *name = dwarf2_name (child_die, cu); | |
14890 | ||
14891 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
14892 | if (attr) | |
14893 | { | |
14894 | /* If the compiler emits this, use it. */ | |
14895 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
14896 | is_this = 1; | |
14897 | } | |
14898 | else if (name && strcmp (name, "this") == 0) | |
14899 | /* Function definitions will have the argument names. */ | |
14900 | is_this = 1; | |
14901 | else if (name == NULL && iparams == 0) | |
14902 | /* Declarations may not have the names, so like | |
14903 | elsewhere in GDB, assume an artificial first | |
14904 | argument is "this". */ | |
14905 | is_this = 1; | |
14906 | ||
14907 | if (is_this) | |
14908 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
14909 | arg_type, 0); | |
14910 | } | |
14911 | ||
14912 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
14913 | iparams++; |
14914 | } | |
14915 | child_die = sibling_die (child_die); | |
14916 | } | |
14917 | } | |
14918 | ||
76c10ea2 | 14919 | return ftype; |
c906108c SS |
14920 | } |
14921 | ||
f792889a | 14922 | static struct type * |
e7c27a73 | 14923 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14924 | { |
e7c27a73 | 14925 | struct objfile *objfile = cu->objfile; |
0114d602 | 14926 | const char *name = NULL; |
3c8e0968 | 14927 | struct type *this_type, *target_type; |
c906108c | 14928 | |
94af9270 | 14929 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
14930 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
14931 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 14932 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
14933 | target_type = die_type (die, cu); |
14934 | if (target_type != this_type) | |
14935 | TYPE_TARGET_TYPE (this_type) = target_type; | |
14936 | else | |
14937 | { | |
14938 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
14939 | spec and cause infinite loops in GDB. */ | |
14940 | complaint (&symfile_complaints, | |
14941 | _("Self-referential DW_TAG_typedef " | |
14942 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14943 | die->offset.sect_off, objfile_name (objfile)); |
3c8e0968 DE |
14944 | TYPE_TARGET_TYPE (this_type) = NULL; |
14945 | } | |
f792889a | 14946 | return this_type; |
c906108c SS |
14947 | } |
14948 | ||
9b790ce7 UW |
14949 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
14950 | (which may be different from NAME) to the architecture back-end to allow | |
14951 | it to guess the correct format if necessary. */ | |
14952 | ||
14953 | static struct type * | |
14954 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
14955 | const char *name_hint) | |
14956 | { | |
14957 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
14958 | const struct floatformat **format; | |
14959 | struct type *type; | |
14960 | ||
14961 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
14962 | if (format) | |
14963 | type = init_float_type (objfile, bits, name, format); | |
14964 | else | |
14965 | type = init_type (objfile, TYPE_CODE_ERROR, bits / TARGET_CHAR_BIT, name); | |
14966 | ||
14967 | return type; | |
14968 | } | |
14969 | ||
c906108c SS |
14970 | /* Find a representation of a given base type and install |
14971 | it in the TYPE field of the die. */ | |
14972 | ||
f792889a | 14973 | static struct type * |
e7c27a73 | 14974 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14975 | { |
e7c27a73 | 14976 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14977 | struct type *type; |
14978 | struct attribute *attr; | |
19f392bc | 14979 | int encoding = 0, bits = 0; |
15d034d0 | 14980 | const char *name; |
c906108c | 14981 | |
e142c38c | 14982 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
14983 | if (attr) |
14984 | { | |
14985 | encoding = DW_UNSND (attr); | |
14986 | } | |
e142c38c | 14987 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14988 | if (attr) |
14989 | { | |
19f392bc | 14990 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 14991 | } |
39cbfefa | 14992 | name = dwarf2_name (die, cu); |
6ccb9162 | 14993 | if (!name) |
c906108c | 14994 | { |
6ccb9162 UW |
14995 | complaint (&symfile_complaints, |
14996 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 14997 | } |
6ccb9162 UW |
14998 | |
14999 | switch (encoding) | |
c906108c | 15000 | { |
6ccb9162 UW |
15001 | case DW_ATE_address: |
15002 | /* Turn DW_ATE_address into a void * pointer. */ | |
19f392bc UW |
15003 | type = init_type (objfile, TYPE_CODE_VOID, 1, NULL); |
15004 | type = init_pointer_type (objfile, bits, name, type); | |
6ccb9162 UW |
15005 | break; |
15006 | case DW_ATE_boolean: | |
19f392bc | 15007 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
15008 | break; |
15009 | case DW_ATE_complex_float: | |
9b790ce7 | 15010 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 15011 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
15012 | break; |
15013 | case DW_ATE_decimal_float: | |
19f392bc | 15014 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
15015 | break; |
15016 | case DW_ATE_float: | |
9b790ce7 | 15017 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
15018 | break; |
15019 | case DW_ATE_signed: | |
19f392bc | 15020 | type = init_integer_type (objfile, bits, 0, name); |
6ccb9162 UW |
15021 | break; |
15022 | case DW_ATE_unsigned: | |
3b2b8fea TT |
15023 | if (cu->language == language_fortran |
15024 | && name | |
61012eef | 15025 | && startswith (name, "character(")) |
19f392bc UW |
15026 | type = init_character_type (objfile, bits, 1, name); |
15027 | else | |
15028 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 UW |
15029 | break; |
15030 | case DW_ATE_signed_char: | |
6e70227d | 15031 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
15032 | || cu->language == language_pascal |
15033 | || cu->language == language_fortran) | |
19f392bc UW |
15034 | type = init_character_type (objfile, bits, 0, name); |
15035 | else | |
15036 | type = init_integer_type (objfile, bits, 0, name); | |
6ccb9162 UW |
15037 | break; |
15038 | case DW_ATE_unsigned_char: | |
868a0084 | 15039 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 15040 | || cu->language == language_pascal |
c44af4eb TT |
15041 | || cu->language == language_fortran |
15042 | || cu->language == language_rust) | |
19f392bc UW |
15043 | type = init_character_type (objfile, bits, 1, name); |
15044 | else | |
15045 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 | 15046 | break; |
75079b2b TT |
15047 | case DW_ATE_UTF: |
15048 | /* We just treat this as an integer and then recognize the | |
15049 | type by name elsewhere. */ | |
19f392bc | 15050 | type = init_integer_type (objfile, bits, 0, name); |
75079b2b TT |
15051 | break; |
15052 | ||
6ccb9162 UW |
15053 | default: |
15054 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
15055 | dwarf_type_encoding_name (encoding)); | |
19f392bc UW |
15056 | type = init_type (objfile, TYPE_CODE_ERROR, |
15057 | bits / TARGET_CHAR_BIT, name); | |
6ccb9162 | 15058 | break; |
c906108c | 15059 | } |
6ccb9162 | 15060 | |
0114d602 | 15061 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 15062 | TYPE_NOSIGN (type) = 1; |
0114d602 | 15063 | |
f792889a | 15064 | return set_die_type (die, type, cu); |
c906108c SS |
15065 | } |
15066 | ||
80180f79 SA |
15067 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
15068 | resulting value of the attribute into struct bound_prop. | |
15069 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
15070 | ||
15071 | static int | |
15072 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
15073 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
15074 | { | |
15075 | struct dwarf2_property_baton *baton; | |
15076 | struct obstack *obstack = &cu->objfile->objfile_obstack; | |
15077 | ||
15078 | if (attr == NULL || prop == NULL) | |
15079 | return 0; | |
15080 | ||
15081 | if (attr_form_is_block (attr)) | |
15082 | { | |
8d749320 | 15083 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
15084 | baton->referenced_type = NULL; |
15085 | baton->locexpr.per_cu = cu->per_cu; | |
15086 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
15087 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
15088 | prop->data.baton = baton; | |
15089 | prop->kind = PROP_LOCEXPR; | |
15090 | gdb_assert (prop->data.baton != NULL); | |
15091 | } | |
15092 | else if (attr_form_is_ref (attr)) | |
15093 | { | |
15094 | struct dwarf2_cu *target_cu = cu; | |
15095 | struct die_info *target_die; | |
15096 | struct attribute *target_attr; | |
15097 | ||
15098 | target_die = follow_die_ref (die, attr, &target_cu); | |
15099 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
15100 | if (target_attr == NULL) |
15101 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
15102 | target_cu); | |
80180f79 SA |
15103 | if (target_attr == NULL) |
15104 | return 0; | |
15105 | ||
df25ebbd | 15106 | switch (target_attr->name) |
80180f79 | 15107 | { |
df25ebbd JB |
15108 | case DW_AT_location: |
15109 | if (attr_form_is_section_offset (target_attr)) | |
15110 | { | |
8d749320 | 15111 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
15112 | baton->referenced_type = die_type (target_die, target_cu); |
15113 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
15114 | prop->data.baton = baton; | |
15115 | prop->kind = PROP_LOCLIST; | |
15116 | gdb_assert (prop->data.baton != NULL); | |
15117 | } | |
15118 | else if (attr_form_is_block (target_attr)) | |
15119 | { | |
8d749320 | 15120 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
15121 | baton->referenced_type = die_type (target_die, target_cu); |
15122 | baton->locexpr.per_cu = cu->per_cu; | |
15123 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
15124 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
15125 | prop->data.baton = baton; | |
15126 | prop->kind = PROP_LOCEXPR; | |
15127 | gdb_assert (prop->data.baton != NULL); | |
15128 | } | |
15129 | else | |
15130 | { | |
15131 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
15132 | "dynamic property"); | |
15133 | return 0; | |
15134 | } | |
15135 | break; | |
15136 | case DW_AT_data_member_location: | |
15137 | { | |
15138 | LONGEST offset; | |
15139 | ||
15140 | if (!handle_data_member_location (target_die, target_cu, | |
15141 | &offset)) | |
15142 | return 0; | |
15143 | ||
8d749320 | 15144 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
15145 | baton->referenced_type = read_type_die (target_die->parent, |
15146 | target_cu); | |
df25ebbd JB |
15147 | baton->offset_info.offset = offset; |
15148 | baton->offset_info.type = die_type (target_die, target_cu); | |
15149 | prop->data.baton = baton; | |
15150 | prop->kind = PROP_ADDR_OFFSET; | |
15151 | break; | |
15152 | } | |
80180f79 SA |
15153 | } |
15154 | } | |
15155 | else if (attr_form_is_constant (attr)) | |
15156 | { | |
15157 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
15158 | prop->kind = PROP_CONST; | |
15159 | } | |
15160 | else | |
15161 | { | |
15162 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
15163 | dwarf2_name (die, cu)); | |
15164 | return 0; | |
15165 | } | |
15166 | ||
15167 | return 1; | |
15168 | } | |
15169 | ||
a02abb62 JB |
15170 | /* Read the given DW_AT_subrange DIE. */ |
15171 | ||
f792889a | 15172 | static struct type * |
a02abb62 JB |
15173 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
15174 | { | |
4c9ad8c2 | 15175 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
15176 | struct type *range_type; |
15177 | struct attribute *attr; | |
729efb13 | 15178 | struct dynamic_prop low, high; |
4fae6e18 | 15179 | int low_default_is_valid; |
c451ebe5 | 15180 | int high_bound_is_count = 0; |
15d034d0 | 15181 | const char *name; |
43bbcdc2 | 15182 | LONGEST negative_mask; |
e77813c8 | 15183 | |
4c9ad8c2 TT |
15184 | orig_base_type = die_type (die, cu); |
15185 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
15186 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
15187 | creating the range type, but we use the result of check_typedef | |
15188 | when examining properties of the type. */ | |
15189 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 15190 | |
7e314c57 JK |
15191 | /* The die_type call above may have already set the type for this DIE. */ |
15192 | range_type = get_die_type (die, cu); | |
15193 | if (range_type) | |
15194 | return range_type; | |
15195 | ||
729efb13 SA |
15196 | low.kind = PROP_CONST; |
15197 | high.kind = PROP_CONST; | |
15198 | high.data.const_val = 0; | |
15199 | ||
4fae6e18 JK |
15200 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
15201 | omitting DW_AT_lower_bound. */ | |
15202 | switch (cu->language) | |
6e70227d | 15203 | { |
4fae6e18 JK |
15204 | case language_c: |
15205 | case language_cplus: | |
729efb13 | 15206 | low.data.const_val = 0; |
4fae6e18 JK |
15207 | low_default_is_valid = 1; |
15208 | break; | |
15209 | case language_fortran: | |
729efb13 | 15210 | low.data.const_val = 1; |
4fae6e18 JK |
15211 | low_default_is_valid = 1; |
15212 | break; | |
15213 | case language_d: | |
4fae6e18 | 15214 | case language_objc: |
c44af4eb | 15215 | case language_rust: |
729efb13 | 15216 | low.data.const_val = 0; |
4fae6e18 JK |
15217 | low_default_is_valid = (cu->header.version >= 4); |
15218 | break; | |
15219 | case language_ada: | |
15220 | case language_m2: | |
15221 | case language_pascal: | |
729efb13 | 15222 | low.data.const_val = 1; |
4fae6e18 JK |
15223 | low_default_is_valid = (cu->header.version >= 4); |
15224 | break; | |
15225 | default: | |
729efb13 | 15226 | low.data.const_val = 0; |
4fae6e18 JK |
15227 | low_default_is_valid = 0; |
15228 | break; | |
a02abb62 JB |
15229 | } |
15230 | ||
e142c38c | 15231 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 15232 | if (attr) |
11c1ba78 | 15233 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
15234 | else if (!low_default_is_valid) |
15235 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
15236 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 15237 | die->offset.sect_off, objfile_name (cu->objfile)); |
a02abb62 | 15238 | |
e142c38c | 15239 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 15240 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
15241 | { |
15242 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 15243 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 15244 | { |
c451ebe5 SA |
15245 | /* If bounds are constant do the final calculation here. */ |
15246 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
15247 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
15248 | else | |
15249 | high_bound_is_count = 1; | |
c2ff108b | 15250 | } |
e77813c8 PM |
15251 | } |
15252 | ||
15253 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
15254 | without specifying a base type. | |
15255 | In that case, the base type must be set to the type of | |
15256 | the lower bound, upper bound or count, in that order, if any of these | |
15257 | three attributes references an object that has a type. | |
15258 | If no base type is found, the Dwarf-2 specifications say that | |
15259 | a signed integer type of size equal to the size of an address should | |
15260 | be used. | |
15261 | For the following C code: `extern char gdb_int [];' | |
15262 | GCC produces an empty range DIE. | |
15263 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 15264 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
15265 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
15266 | { | |
15267 | struct objfile *objfile = cu->objfile; | |
15268 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
15269 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
15270 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
15271 | ||
15272 | /* Test "int", "long int", and "long long int" objfile types, | |
15273 | and select the first one having a size above or equal to the | |
15274 | architecture address size. */ | |
15275 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15276 | base_type = int_type; | |
15277 | else | |
15278 | { | |
15279 | int_type = objfile_type (objfile)->builtin_long; | |
15280 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15281 | base_type = int_type; | |
15282 | else | |
15283 | { | |
15284 | int_type = objfile_type (objfile)->builtin_long_long; | |
15285 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15286 | base_type = int_type; | |
15287 | } | |
15288 | } | |
15289 | } | |
a02abb62 | 15290 | |
dbb9c2b1 JB |
15291 | /* Normally, the DWARF producers are expected to use a signed |
15292 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
15293 | But this is unfortunately not always the case, as witnessed | |
15294 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
15295 | is used instead. To work around that ambiguity, we treat | |
15296 | the bounds as signed, and thus sign-extend their values, when | |
15297 | the base type is signed. */ | |
6e70227d | 15298 | negative_mask = |
66c6502d | 15299 | -((LONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
15300 | if (low.kind == PROP_CONST |
15301 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
15302 | low.data.const_val |= negative_mask; | |
15303 | if (high.kind == PROP_CONST | |
15304 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
15305 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 15306 | |
729efb13 | 15307 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 15308 | |
c451ebe5 SA |
15309 | if (high_bound_is_count) |
15310 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
15311 | ||
c2ff108b JK |
15312 | /* Ada expects an empty array on no boundary attributes. */ |
15313 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 15314 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 15315 | |
39cbfefa DJ |
15316 | name = dwarf2_name (die, cu); |
15317 | if (name) | |
15318 | TYPE_NAME (range_type) = name; | |
6e70227d | 15319 | |
e142c38c | 15320 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
15321 | if (attr) |
15322 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
15323 | ||
7e314c57 JK |
15324 | set_die_type (die, range_type, cu); |
15325 | ||
15326 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
15327 | set_descriptive_type (range_type, die, cu); |
15328 | ||
7e314c57 | 15329 | return range_type; |
a02abb62 | 15330 | } |
6e70227d | 15331 | |
f792889a | 15332 | static struct type * |
81a17f79 JB |
15333 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
15334 | { | |
15335 | struct type *type; | |
81a17f79 | 15336 | |
81a17f79 JB |
15337 | /* For now, we only support the C meaning of an unspecified type: void. */ |
15338 | ||
19f392bc | 15339 | type = init_type (cu->objfile, TYPE_CODE_VOID, 0, NULL); |
0114d602 | 15340 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 15341 | |
f792889a | 15342 | return set_die_type (die, type, cu); |
81a17f79 | 15343 | } |
a02abb62 | 15344 | |
639d11d3 DC |
15345 | /* Read a single die and all its descendents. Set the die's sibling |
15346 | field to NULL; set other fields in the die correctly, and set all | |
15347 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
15348 | location of the info_ptr after reading all of those dies. PARENT | |
15349 | is the parent of the die in question. */ | |
15350 | ||
15351 | static struct die_info * | |
dee91e82 | 15352 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
15353 | const gdb_byte *info_ptr, |
15354 | const gdb_byte **new_info_ptr, | |
dee91e82 | 15355 | struct die_info *parent) |
639d11d3 DC |
15356 | { |
15357 | struct die_info *die; | |
d521ce57 | 15358 | const gdb_byte *cur_ptr; |
639d11d3 DC |
15359 | int has_children; |
15360 | ||
bf6af496 | 15361 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
15362 | if (die == NULL) |
15363 | { | |
15364 | *new_info_ptr = cur_ptr; | |
15365 | return NULL; | |
15366 | } | |
93311388 | 15367 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
15368 | |
15369 | if (has_children) | |
bf6af496 | 15370 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
15371 | else |
15372 | { | |
15373 | die->child = NULL; | |
15374 | *new_info_ptr = cur_ptr; | |
15375 | } | |
15376 | ||
15377 | die->sibling = NULL; | |
15378 | die->parent = parent; | |
15379 | return die; | |
15380 | } | |
15381 | ||
15382 | /* Read a die, all of its descendents, and all of its siblings; set | |
15383 | all of the fields of all of the dies correctly. Arguments are as | |
15384 | in read_die_and_children. */ | |
15385 | ||
15386 | static struct die_info * | |
bf6af496 | 15387 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
15388 | const gdb_byte *info_ptr, |
15389 | const gdb_byte **new_info_ptr, | |
bf6af496 | 15390 | struct die_info *parent) |
639d11d3 DC |
15391 | { |
15392 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 15393 | const gdb_byte *cur_ptr; |
639d11d3 | 15394 | |
c906108c | 15395 | cur_ptr = info_ptr; |
639d11d3 DC |
15396 | first_die = last_sibling = NULL; |
15397 | ||
15398 | while (1) | |
c906108c | 15399 | { |
639d11d3 | 15400 | struct die_info *die |
dee91e82 | 15401 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 15402 | |
1d325ec1 | 15403 | if (die == NULL) |
c906108c | 15404 | { |
639d11d3 DC |
15405 | *new_info_ptr = cur_ptr; |
15406 | return first_die; | |
c906108c | 15407 | } |
1d325ec1 DJ |
15408 | |
15409 | if (!first_die) | |
15410 | first_die = die; | |
c906108c | 15411 | else |
1d325ec1 DJ |
15412 | last_sibling->sibling = die; |
15413 | ||
15414 | last_sibling = die; | |
c906108c | 15415 | } |
c906108c SS |
15416 | } |
15417 | ||
bf6af496 DE |
15418 | /* Read a die, all of its descendents, and all of its siblings; set |
15419 | all of the fields of all of the dies correctly. Arguments are as | |
15420 | in read_die_and_children. | |
15421 | This the main entry point for reading a DIE and all its children. */ | |
15422 | ||
15423 | static struct die_info * | |
15424 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
15425 | const gdb_byte *info_ptr, |
15426 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
15427 | struct die_info *parent) |
15428 | { | |
15429 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
15430 | new_info_ptr, parent); | |
15431 | ||
b4f54984 | 15432 | if (dwarf_die_debug) |
bf6af496 DE |
15433 | { |
15434 | fprintf_unfiltered (gdb_stdlog, | |
15435 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15436 | get_section_name (reader->die_section), |
bf6af496 DE |
15437 | (unsigned) (info_ptr - reader->die_section->buffer), |
15438 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 15439 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
15440 | } |
15441 | ||
15442 | return die; | |
15443 | } | |
15444 | ||
3019eac3 DE |
15445 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
15446 | attributes. | |
15447 | The caller is responsible for filling in the extra attributes | |
15448 | and updating (*DIEP)->num_attrs. | |
15449 | Set DIEP to point to a newly allocated die with its information, | |
15450 | except for its child, sibling, and parent fields. | |
15451 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 15452 | |
d521ce57 | 15453 | static const gdb_byte * |
3019eac3 | 15454 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 15455 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 15456 | int *has_children, int num_extra_attrs) |
93311388 | 15457 | { |
b64f50a1 JK |
15458 | unsigned int abbrev_number, bytes_read, i; |
15459 | sect_offset offset; | |
93311388 DE |
15460 | struct abbrev_info *abbrev; |
15461 | struct die_info *die; | |
15462 | struct dwarf2_cu *cu = reader->cu; | |
15463 | bfd *abfd = reader->abfd; | |
15464 | ||
b64f50a1 | 15465 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
15466 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15467 | info_ptr += bytes_read; | |
15468 | if (!abbrev_number) | |
15469 | { | |
15470 | *diep = NULL; | |
15471 | *has_children = 0; | |
15472 | return info_ptr; | |
15473 | } | |
15474 | ||
433df2d4 | 15475 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 15476 | if (!abbrev) |
348e048f DE |
15477 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
15478 | abbrev_number, | |
15479 | bfd_get_filename (abfd)); | |
15480 | ||
3019eac3 | 15481 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
15482 | die->offset = offset; |
15483 | die->tag = abbrev->tag; | |
15484 | die->abbrev = abbrev_number; | |
15485 | ||
3019eac3 DE |
15486 | /* Make the result usable. |
15487 | The caller needs to update num_attrs after adding the extra | |
15488 | attributes. */ | |
93311388 DE |
15489 | die->num_attrs = abbrev->num_attrs; |
15490 | ||
15491 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
15492 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
15493 | info_ptr); | |
93311388 DE |
15494 | |
15495 | *diep = die; | |
15496 | *has_children = abbrev->has_children; | |
15497 | return info_ptr; | |
15498 | } | |
15499 | ||
3019eac3 DE |
15500 | /* Read a die and all its attributes. |
15501 | Set DIEP to point to a newly allocated die with its information, | |
15502 | except for its child, sibling, and parent fields. | |
15503 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
15504 | ||
d521ce57 | 15505 | static const gdb_byte * |
3019eac3 | 15506 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 15507 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
15508 | int *has_children) |
15509 | { | |
d521ce57 | 15510 | const gdb_byte *result; |
bf6af496 DE |
15511 | |
15512 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
15513 | ||
b4f54984 | 15514 | if (dwarf_die_debug) |
bf6af496 DE |
15515 | { |
15516 | fprintf_unfiltered (gdb_stdlog, | |
15517 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15518 | get_section_name (reader->die_section), |
bf6af496 DE |
15519 | (unsigned) (info_ptr - reader->die_section->buffer), |
15520 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 15521 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
15522 | } |
15523 | ||
15524 | return result; | |
3019eac3 | 15525 | } |
433df2d4 DE |
15526 | \f |
15527 | /* Abbreviation tables. | |
3019eac3 | 15528 | |
433df2d4 | 15529 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
15530 | stored in a separate .debug_abbrev section. Before we read any |
15531 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
15532 | in a hash table. */ |
15533 | ||
15534 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
15535 | ||
15536 | static struct abbrev_info * | |
15537 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
15538 | { | |
15539 | struct abbrev_info *abbrev; | |
15540 | ||
8d749320 | 15541 | abbrev = XOBNEW (&abbrev_table->abbrev_obstack, struct abbrev_info); |
433df2d4 | 15542 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 15543 | |
433df2d4 DE |
15544 | return abbrev; |
15545 | } | |
15546 | ||
15547 | /* Add an abbreviation to the table. */ | |
c906108c SS |
15548 | |
15549 | static void | |
433df2d4 DE |
15550 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
15551 | unsigned int abbrev_number, | |
15552 | struct abbrev_info *abbrev) | |
15553 | { | |
15554 | unsigned int hash_number; | |
15555 | ||
15556 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15557 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
15558 | abbrev_table->abbrevs[hash_number] = abbrev; | |
15559 | } | |
dee91e82 | 15560 | |
433df2d4 DE |
15561 | /* Look up an abbrev in the table. |
15562 | Returns NULL if the abbrev is not found. */ | |
15563 | ||
15564 | static struct abbrev_info * | |
15565 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
15566 | unsigned int abbrev_number) | |
c906108c | 15567 | { |
433df2d4 DE |
15568 | unsigned int hash_number; |
15569 | struct abbrev_info *abbrev; | |
15570 | ||
15571 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15572 | abbrev = abbrev_table->abbrevs[hash_number]; | |
15573 | ||
15574 | while (abbrev) | |
15575 | { | |
15576 | if (abbrev->number == abbrev_number) | |
15577 | return abbrev; | |
15578 | abbrev = abbrev->next; | |
15579 | } | |
15580 | return NULL; | |
15581 | } | |
15582 | ||
15583 | /* Read in an abbrev table. */ | |
15584 | ||
15585 | static struct abbrev_table * | |
15586 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
15587 | sect_offset offset) | |
15588 | { | |
15589 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 15590 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 15591 | struct abbrev_table *abbrev_table; |
d521ce57 | 15592 | const gdb_byte *abbrev_ptr; |
c906108c SS |
15593 | struct abbrev_info *cur_abbrev; |
15594 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 15595 | unsigned int abbrev_form; |
f3dd6933 DJ |
15596 | struct attr_abbrev *cur_attrs; |
15597 | unsigned int allocated_attrs; | |
c906108c | 15598 | |
70ba0933 | 15599 | abbrev_table = XNEW (struct abbrev_table); |
f4dc4d17 | 15600 | abbrev_table->offset = offset; |
433df2d4 | 15601 | obstack_init (&abbrev_table->abbrev_obstack); |
8d749320 SM |
15602 | abbrev_table->abbrevs = |
15603 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct abbrev_info *, | |
15604 | ABBREV_HASH_SIZE); | |
433df2d4 DE |
15605 | memset (abbrev_table->abbrevs, 0, |
15606 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 15607 | |
433df2d4 DE |
15608 | dwarf2_read_section (objfile, section); |
15609 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
15610 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15611 | abbrev_ptr += bytes_read; | |
15612 | ||
f3dd6933 | 15613 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 15614 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 15615 | |
0963b4bd | 15616 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
15617 | while (abbrev_number) |
15618 | { | |
433df2d4 | 15619 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
15620 | |
15621 | /* read in abbrev header */ | |
15622 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
15623 | cur_abbrev->tag |
15624 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
15625 | abbrev_ptr += bytes_read; |
15626 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
15627 | abbrev_ptr += 1; | |
15628 | ||
15629 | /* now read in declarations */ | |
22d2f3ab | 15630 | for (;;) |
c906108c | 15631 | { |
43988095 JK |
15632 | LONGEST implicit_const; |
15633 | ||
22d2f3ab JK |
15634 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15635 | abbrev_ptr += bytes_read; | |
15636 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15637 | abbrev_ptr += bytes_read; | |
43988095 JK |
15638 | if (abbrev_form == DW_FORM_implicit_const) |
15639 | { | |
15640 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
15641 | &bytes_read); | |
15642 | abbrev_ptr += bytes_read; | |
15643 | } | |
15644 | else | |
15645 | { | |
15646 | /* Initialize it due to a false compiler warning. */ | |
15647 | implicit_const = -1; | |
15648 | } | |
22d2f3ab JK |
15649 | |
15650 | if (abbrev_name == 0) | |
15651 | break; | |
15652 | ||
f3dd6933 | 15653 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 15654 | { |
f3dd6933 DJ |
15655 | allocated_attrs += ATTR_ALLOC_CHUNK; |
15656 | cur_attrs | |
224c3ddb | 15657 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 15658 | } |
ae038cb0 | 15659 | |
aead7601 SM |
15660 | cur_attrs[cur_abbrev->num_attrs].name |
15661 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 15662 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 15663 | = (enum dwarf_form) abbrev_form; |
43988095 | 15664 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 15665 | ++cur_abbrev->num_attrs; |
c906108c SS |
15666 | } |
15667 | ||
8d749320 SM |
15668 | cur_abbrev->attrs = |
15669 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
15670 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
15671 | memcpy (cur_abbrev->attrs, cur_attrs, |
15672 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
15673 | ||
433df2d4 | 15674 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
15675 | |
15676 | /* Get next abbreviation. | |
15677 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
15678 | always properly terminated with an abbrev number of 0. |
15679 | Exit loop if we encounter an abbreviation which we have | |
15680 | already read (which means we are about to read the abbreviations | |
15681 | for the next compile unit) or if the end of the abbreviation | |
15682 | table is reached. */ | |
433df2d4 | 15683 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
15684 | break; |
15685 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15686 | abbrev_ptr += bytes_read; | |
433df2d4 | 15687 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
15688 | break; |
15689 | } | |
f3dd6933 DJ |
15690 | |
15691 | xfree (cur_attrs); | |
433df2d4 | 15692 | return abbrev_table; |
c906108c SS |
15693 | } |
15694 | ||
433df2d4 | 15695 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 15696 | |
c906108c | 15697 | static void |
433df2d4 | 15698 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 15699 | { |
433df2d4 DE |
15700 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
15701 | xfree (abbrev_table); | |
c906108c SS |
15702 | } |
15703 | ||
f4dc4d17 DE |
15704 | /* Same as abbrev_table_free but as a cleanup. |
15705 | We pass in a pointer to the pointer to the table so that we can | |
15706 | set the pointer to NULL when we're done. It also simplifies | |
73051182 | 15707 | build_type_psymtabs_1. */ |
f4dc4d17 DE |
15708 | |
15709 | static void | |
15710 | abbrev_table_free_cleanup (void *table_ptr) | |
15711 | { | |
9a3c8263 | 15712 | struct abbrev_table **abbrev_table_ptr = (struct abbrev_table **) table_ptr; |
f4dc4d17 DE |
15713 | |
15714 | if (*abbrev_table_ptr != NULL) | |
15715 | abbrev_table_free (*abbrev_table_ptr); | |
15716 | *abbrev_table_ptr = NULL; | |
15717 | } | |
15718 | ||
433df2d4 DE |
15719 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
15720 | ||
15721 | static void | |
15722 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
15723 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 15724 | { |
433df2d4 DE |
15725 | cu->abbrev_table = |
15726 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
15727 | } | |
c906108c | 15728 | |
433df2d4 | 15729 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 15730 | |
433df2d4 DE |
15731 | static void |
15732 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
15733 | { | |
9a3c8263 | 15734 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr_to_cu; |
c906108c | 15735 | |
a2ce51a0 DE |
15736 | if (cu->abbrev_table != NULL) |
15737 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
15738 | /* Set this to NULL so that we SEGV if we try to read it later, |
15739 | and also because free_comp_unit verifies this is NULL. */ | |
15740 | cu->abbrev_table = NULL; | |
15741 | } | |
15742 | \f | |
72bf9492 DJ |
15743 | /* Returns nonzero if TAG represents a type that we might generate a partial |
15744 | symbol for. */ | |
15745 | ||
15746 | static int | |
15747 | is_type_tag_for_partial (int tag) | |
15748 | { | |
15749 | switch (tag) | |
15750 | { | |
15751 | #if 0 | |
15752 | /* Some types that would be reasonable to generate partial symbols for, | |
15753 | that we don't at present. */ | |
15754 | case DW_TAG_array_type: | |
15755 | case DW_TAG_file_type: | |
15756 | case DW_TAG_ptr_to_member_type: | |
15757 | case DW_TAG_set_type: | |
15758 | case DW_TAG_string_type: | |
15759 | case DW_TAG_subroutine_type: | |
15760 | #endif | |
15761 | case DW_TAG_base_type: | |
15762 | case DW_TAG_class_type: | |
680b30c7 | 15763 | case DW_TAG_interface_type: |
72bf9492 DJ |
15764 | case DW_TAG_enumeration_type: |
15765 | case DW_TAG_structure_type: | |
15766 | case DW_TAG_subrange_type: | |
15767 | case DW_TAG_typedef: | |
15768 | case DW_TAG_union_type: | |
15769 | return 1; | |
15770 | default: | |
15771 | return 0; | |
15772 | } | |
15773 | } | |
15774 | ||
15775 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
15776 | ||
15777 | static struct partial_die_info * | |
dee91e82 | 15778 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 15779 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 15780 | { |
dee91e82 | 15781 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15782 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
15783 | struct partial_die_info *part_die; |
15784 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
15785 | struct abbrev_info *abbrev; | |
15786 | unsigned int bytes_read; | |
5afb4e99 | 15787 | unsigned int load_all = 0; |
72bf9492 DJ |
15788 | int nesting_level = 1; |
15789 | ||
15790 | parent_die = NULL; | |
15791 | last_die = NULL; | |
15792 | ||
7adf1e79 DE |
15793 | gdb_assert (cu->per_cu != NULL); |
15794 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
15795 | load_all = 1; |
15796 | ||
72bf9492 DJ |
15797 | cu->partial_dies |
15798 | = htab_create_alloc_ex (cu->header.length / 12, | |
15799 | partial_die_hash, | |
15800 | partial_die_eq, | |
15801 | NULL, | |
15802 | &cu->comp_unit_obstack, | |
15803 | hashtab_obstack_allocate, | |
15804 | dummy_obstack_deallocate); | |
15805 | ||
8d749320 | 15806 | part_die = XOBNEW (&cu->comp_unit_obstack, struct partial_die_info); |
72bf9492 DJ |
15807 | |
15808 | while (1) | |
15809 | { | |
15810 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
15811 | ||
15812 | /* A NULL abbrev means the end of a series of children. */ | |
15813 | if (abbrev == NULL) | |
15814 | { | |
15815 | if (--nesting_level == 0) | |
15816 | { | |
15817 | /* PART_DIE was probably the last thing allocated on the | |
15818 | comp_unit_obstack, so we could call obstack_free | |
15819 | here. We don't do that because the waste is small, | |
15820 | and will be cleaned up when we're done with this | |
15821 | compilation unit. This way, we're also more robust | |
15822 | against other users of the comp_unit_obstack. */ | |
15823 | return first_die; | |
15824 | } | |
15825 | info_ptr += bytes_read; | |
15826 | last_die = parent_die; | |
15827 | parent_die = parent_die->die_parent; | |
15828 | continue; | |
15829 | } | |
15830 | ||
98bfdba5 PA |
15831 | /* Check for template arguments. We never save these; if |
15832 | they're seen, we just mark the parent, and go on our way. */ | |
15833 | if (parent_die != NULL | |
15834 | && cu->language == language_cplus | |
15835 | && (abbrev->tag == DW_TAG_template_type_param | |
15836 | || abbrev->tag == DW_TAG_template_value_param)) | |
15837 | { | |
15838 | parent_die->has_template_arguments = 1; | |
15839 | ||
15840 | if (!load_all) | |
15841 | { | |
15842 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 15843 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15844 | continue; |
15845 | } | |
15846 | } | |
15847 | ||
0d99eb77 | 15848 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
15849 | Skip their other children. */ |
15850 | if (!load_all | |
15851 | && cu->language == language_cplus | |
15852 | && parent_die != NULL | |
15853 | && parent_die->tag == DW_TAG_subprogram) | |
15854 | { | |
dee91e82 | 15855 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15856 | continue; |
15857 | } | |
15858 | ||
5afb4e99 DJ |
15859 | /* Check whether this DIE is interesting enough to save. Normally |
15860 | we would not be interested in members here, but there may be | |
15861 | later variables referencing them via DW_AT_specification (for | |
15862 | static members). */ | |
15863 | if (!load_all | |
15864 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 15865 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
15866 | && abbrev->tag != DW_TAG_enumerator |
15867 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 15868 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 15869 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 15870 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 15871 | && abbrev->tag != DW_TAG_module |
95554aad | 15872 | && abbrev->tag != DW_TAG_member |
74921315 KS |
15873 | && abbrev->tag != DW_TAG_imported_unit |
15874 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
15875 | { |
15876 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15877 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
15878 | continue; |
15879 | } | |
15880 | ||
dee91e82 DE |
15881 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
15882 | info_ptr); | |
72bf9492 DJ |
15883 | |
15884 | /* This two-pass algorithm for processing partial symbols has a | |
15885 | high cost in cache pressure. Thus, handle some simple cases | |
15886 | here which cover the majority of C partial symbols. DIEs | |
15887 | which neither have specification tags in them, nor could have | |
15888 | specification tags elsewhere pointing at them, can simply be | |
15889 | processed and discarded. | |
15890 | ||
15891 | This segment is also optional; scan_partial_symbols and | |
15892 | add_partial_symbol will handle these DIEs if we chain | |
15893 | them in normally. When compilers which do not emit large | |
15894 | quantities of duplicate debug information are more common, | |
15895 | this code can probably be removed. */ | |
15896 | ||
15897 | /* Any complete simple types at the top level (pretty much all | |
15898 | of them, for a language without namespaces), can be processed | |
15899 | directly. */ | |
15900 | if (parent_die == NULL | |
15901 | && part_die->has_specification == 0 | |
15902 | && part_die->is_declaration == 0 | |
d8228535 | 15903 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
15904 | || part_die->tag == DW_TAG_base_type |
15905 | || part_die->tag == DW_TAG_subrange_type)) | |
15906 | { | |
15907 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 15908 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15909 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 | 15910 | &objfile->static_psymbols, |
1762568f | 15911 | 0, cu->language, objfile); |
dee91e82 | 15912 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15913 | continue; |
15914 | } | |
15915 | ||
d8228535 JK |
15916 | /* The exception for DW_TAG_typedef with has_children above is |
15917 | a workaround of GCC PR debug/47510. In the case of this complaint | |
15918 | type_name_no_tag_or_error will error on such types later. | |
15919 | ||
15920 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
15921 | it could not find the child DIEs referenced later, this is checked | |
15922 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
15923 | ||
15924 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
15925 | complaint (&symfile_complaints, | |
15926 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
15927 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 15928 | part_die->offset.sect_off, objfile_name (objfile)); |
d8228535 | 15929 | |
72bf9492 DJ |
15930 | /* If we're at the second level, and we're an enumerator, and |
15931 | our parent has no specification (meaning possibly lives in a | |
15932 | namespace elsewhere), then we can add the partial symbol now | |
15933 | instead of queueing it. */ | |
15934 | if (part_die->tag == DW_TAG_enumerator | |
15935 | && parent_die != NULL | |
15936 | && parent_die->die_parent == NULL | |
15937 | && parent_die->tag == DW_TAG_enumeration_type | |
15938 | && parent_die->has_specification == 0) | |
15939 | { | |
15940 | if (part_die->name == NULL) | |
3e43a32a MS |
15941 | complaint (&symfile_complaints, |
15942 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 15943 | else if (building_psymtab) |
04a679b8 | 15944 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15945 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 15946 | cu->language == language_cplus |
bb5ed363 DE |
15947 | ? &objfile->global_psymbols |
15948 | : &objfile->static_psymbols, | |
1762568f | 15949 | 0, cu->language, objfile); |
72bf9492 | 15950 | |
dee91e82 | 15951 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15952 | continue; |
15953 | } | |
15954 | ||
15955 | /* We'll save this DIE so link it in. */ | |
15956 | part_die->die_parent = parent_die; | |
15957 | part_die->die_sibling = NULL; | |
15958 | part_die->die_child = NULL; | |
15959 | ||
15960 | if (last_die && last_die == parent_die) | |
15961 | last_die->die_child = part_die; | |
15962 | else if (last_die) | |
15963 | last_die->die_sibling = part_die; | |
15964 | ||
15965 | last_die = part_die; | |
15966 | ||
15967 | if (first_die == NULL) | |
15968 | first_die = part_die; | |
15969 | ||
15970 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
15971 | find interesting need to be in the hash table, because we | |
15972 | also have the parent/sibling/child chains; only those that we | |
15973 | might refer to by offset later during partial symbol reading. | |
15974 | ||
15975 | For now this means things that might have be the target of a | |
15976 | DW_AT_specification, DW_AT_abstract_origin, or | |
15977 | DW_AT_extension. DW_AT_extension will refer only to | |
15978 | namespaces; DW_AT_abstract_origin refers to functions (and | |
15979 | many things under the function DIE, but we do not recurse | |
15980 | into function DIEs during partial symbol reading) and | |
15981 | possibly variables as well; DW_AT_specification refers to | |
15982 | declarations. Declarations ought to have the DW_AT_declaration | |
15983 | flag. It happens that GCC forgets to put it in sometimes, but | |
15984 | only for functions, not for types. | |
15985 | ||
15986 | Adding more things than necessary to the hash table is harmless | |
15987 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
15988 | wasted time in find_partial_die, when we reread the compilation |
15989 | unit with load_all_dies set. */ | |
72bf9492 | 15990 | |
5afb4e99 | 15991 | if (load_all |
72929c62 | 15992 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 15993 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
15994 | || abbrev->tag == DW_TAG_variable |
15995 | || abbrev->tag == DW_TAG_namespace | |
15996 | || part_die->is_declaration) | |
15997 | { | |
15998 | void **slot; | |
15999 | ||
16000 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 16001 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
16002 | *slot = part_die; |
16003 | } | |
16004 | ||
8d749320 | 16005 | part_die = XOBNEW (&cu->comp_unit_obstack, struct partial_die_info); |
72bf9492 DJ |
16006 | |
16007 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 16008 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
16009 | languages we have to, so that we can get at method physnames |
16010 | to infer fully qualified class names, for DW_AT_specification, | |
16011 | and for C++ template arguments. For C++, we also look one level | |
16012 | inside functions to find template arguments (if the name of the | |
16013 | function does not already contain the template arguments). | |
bc30ff58 JB |
16014 | |
16015 | For Ada, we need to scan the children of subprograms and lexical | |
16016 | blocks as well because Ada allows the definition of nested | |
16017 | entities that could be interesting for the debugger, such as | |
16018 | nested subprograms for instance. */ | |
72bf9492 | 16019 | if (last_die->has_children |
5afb4e99 DJ |
16020 | && (load_all |
16021 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 16022 | || last_die->tag == DW_TAG_module |
72bf9492 | 16023 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
16024 | || (cu->language == language_cplus |
16025 | && last_die->tag == DW_TAG_subprogram | |
16026 | && (last_die->name == NULL | |
16027 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
16028 | || (cu->language != language_c |
16029 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 16030 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 16031 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
16032 | || last_die->tag == DW_TAG_union_type)) |
16033 | || (cu->language == language_ada | |
16034 | && (last_die->tag == DW_TAG_subprogram | |
16035 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
16036 | { |
16037 | nesting_level++; | |
16038 | parent_die = last_die; | |
16039 | continue; | |
16040 | } | |
16041 | ||
16042 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 16043 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
16044 | |
16045 | /* Back to the top, do it again. */ | |
16046 | } | |
16047 | } | |
16048 | ||
c906108c SS |
16049 | /* Read a minimal amount of information into the minimal die structure. */ |
16050 | ||
d521ce57 | 16051 | static const gdb_byte * |
dee91e82 DE |
16052 | read_partial_die (const struct die_reader_specs *reader, |
16053 | struct partial_die_info *part_die, | |
16054 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 16055 | const gdb_byte *info_ptr) |
c906108c | 16056 | { |
dee91e82 | 16057 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 16058 | struct objfile *objfile = cu->objfile; |
d521ce57 | 16059 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 16060 | unsigned int i; |
c906108c | 16061 | struct attribute attr; |
c5aa993b | 16062 | int has_low_pc_attr = 0; |
c906108c | 16063 | int has_high_pc_attr = 0; |
91da1414 | 16064 | int high_pc_relative = 0; |
c906108c | 16065 | |
72bf9492 | 16066 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 16067 | |
b64f50a1 | 16068 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
16069 | |
16070 | info_ptr += abbrev_len; | |
16071 | ||
16072 | if (abbrev == NULL) | |
16073 | return info_ptr; | |
16074 | ||
c906108c SS |
16075 | part_die->tag = abbrev->tag; |
16076 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
16077 | |
16078 | for (i = 0; i < abbrev->num_attrs; ++i) | |
16079 | { | |
dee91e82 | 16080 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
16081 | |
16082 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 16083 | partial symbol table. */ |
c906108c SS |
16084 | switch (attr.name) |
16085 | { | |
16086 | case DW_AT_name: | |
71c25dea TT |
16087 | switch (part_die->tag) |
16088 | { | |
16089 | case DW_TAG_compile_unit: | |
95554aad | 16090 | case DW_TAG_partial_unit: |
348e048f | 16091 | case DW_TAG_type_unit: |
71c25dea TT |
16092 | /* Compilation units have a DW_AT_name that is a filename, not |
16093 | a source language identifier. */ | |
16094 | case DW_TAG_enumeration_type: | |
16095 | case DW_TAG_enumerator: | |
16096 | /* These tags always have simple identifiers already; no need | |
16097 | to canonicalize them. */ | |
16098 | part_die->name = DW_STRING (&attr); | |
16099 | break; | |
16100 | default: | |
16101 | part_die->name | |
16102 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
34a68019 | 16103 | &objfile->per_bfd->storage_obstack); |
71c25dea TT |
16104 | break; |
16105 | } | |
c906108c | 16106 | break; |
31ef98ae | 16107 | case DW_AT_linkage_name: |
c906108c | 16108 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
16109 | /* Note that both forms of linkage name might appear. We |
16110 | assume they will be the same, and we only store the last | |
16111 | one we see. */ | |
94af9270 KS |
16112 | if (cu->language == language_ada) |
16113 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 16114 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
16115 | break; |
16116 | case DW_AT_low_pc: | |
16117 | has_low_pc_attr = 1; | |
31aa7e4e | 16118 | part_die->lowpc = attr_value_as_address (&attr); |
c906108c SS |
16119 | break; |
16120 | case DW_AT_high_pc: | |
16121 | has_high_pc_attr = 1; | |
31aa7e4e JB |
16122 | part_die->highpc = attr_value_as_address (&attr); |
16123 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) | |
16124 | high_pc_relative = 1; | |
c906108c SS |
16125 | break; |
16126 | case DW_AT_location: | |
0963b4bd | 16127 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
16128 | if (attr_form_is_block (&attr)) |
16129 | { | |
95554aad | 16130 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 16131 | } |
3690dd37 | 16132 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 16133 | { |
4d3c2250 | 16134 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
16135 | } |
16136 | else | |
16137 | { | |
4d3c2250 KB |
16138 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
16139 | "partial symbol information"); | |
8e19ed76 | 16140 | } |
c906108c | 16141 | break; |
c906108c SS |
16142 | case DW_AT_external: |
16143 | part_die->is_external = DW_UNSND (&attr); | |
16144 | break; | |
16145 | case DW_AT_declaration: | |
16146 | part_die->is_declaration = DW_UNSND (&attr); | |
16147 | break; | |
16148 | case DW_AT_type: | |
16149 | part_die->has_type = 1; | |
16150 | break; | |
16151 | case DW_AT_abstract_origin: | |
16152 | case DW_AT_specification: | |
72bf9492 DJ |
16153 | case DW_AT_extension: |
16154 | part_die->has_specification = 1; | |
c764a876 | 16155 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
16156 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
16157 | || cu->per_cu->is_dwz); | |
c906108c SS |
16158 | break; |
16159 | case DW_AT_sibling: | |
16160 | /* Ignore absolute siblings, they might point outside of | |
16161 | the current compile unit. */ | |
16162 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
16163 | complaint (&symfile_complaints, |
16164 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 16165 | else |
b9502d3f WN |
16166 | { |
16167 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
16168 | const gdb_byte *sibling_ptr = buffer + off; | |
16169 | ||
16170 | if (sibling_ptr < info_ptr) | |
16171 | complaint (&symfile_complaints, | |
16172 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
16173 | else if (sibling_ptr > reader->buffer_end) |
16174 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
16175 | else |
16176 | part_die->sibling = sibling_ptr; | |
16177 | } | |
c906108c | 16178 | break; |
fa4028e9 JB |
16179 | case DW_AT_byte_size: |
16180 | part_die->has_byte_size = 1; | |
16181 | break; | |
ff908ebf AW |
16182 | case DW_AT_const_value: |
16183 | part_die->has_const_value = 1; | |
16184 | break; | |
68511cec CES |
16185 | case DW_AT_calling_convention: |
16186 | /* DWARF doesn't provide a way to identify a program's source-level | |
16187 | entry point. DW_AT_calling_convention attributes are only meant | |
16188 | to describe functions' calling conventions. | |
16189 | ||
16190 | However, because it's a necessary piece of information in | |
0c1b455e TT |
16191 | Fortran, and before DWARF 4 DW_CC_program was the only |
16192 | piece of debugging information whose definition refers to | |
16193 | a 'main program' at all, several compilers marked Fortran | |
16194 | main programs with DW_CC_program --- even when those | |
16195 | functions use the standard calling conventions. | |
16196 | ||
16197 | Although DWARF now specifies a way to provide this | |
16198 | information, we support this practice for backward | |
16199 | compatibility. */ | |
68511cec | 16200 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e TT |
16201 | && cu->language == language_fortran) |
16202 | part_die->main_subprogram = 1; | |
68511cec | 16203 | break; |
481860b3 GB |
16204 | case DW_AT_inline: |
16205 | if (DW_UNSND (&attr) == DW_INL_inlined | |
16206 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
16207 | part_die->may_be_inlined = 1; | |
16208 | break; | |
95554aad TT |
16209 | |
16210 | case DW_AT_import: | |
16211 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
16212 | { |
16213 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
16214 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
16215 | || cu->per_cu->is_dwz); | |
16216 | } | |
95554aad TT |
16217 | break; |
16218 | ||
0c1b455e TT |
16219 | case DW_AT_main_subprogram: |
16220 | part_die->main_subprogram = DW_UNSND (&attr); | |
16221 | break; | |
16222 | ||
c906108c SS |
16223 | default: |
16224 | break; | |
16225 | } | |
16226 | } | |
16227 | ||
91da1414 MW |
16228 | if (high_pc_relative) |
16229 | part_die->highpc += part_die->lowpc; | |
16230 | ||
9373cf26 JK |
16231 | if (has_low_pc_attr && has_high_pc_attr) |
16232 | { | |
16233 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
16234 | eliminate duplicate copies of functions and vtables and such. | |
16235 | The linker will arbitrarily choose one and discard the others. | |
16236 | The AT_*_pc values for such functions refer to local labels in | |
16237 | these sections. If the section from that file was discarded, the | |
16238 | labels are not in the output, so the relocs get a value of 0. | |
16239 | If this is a discarded function, mark the pc bounds as invalid, | |
16240 | so that GDB will ignore it. */ | |
16241 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
16242 | { | |
bb5ed363 | 16243 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
16244 | |
16245 | complaint (&symfile_complaints, | |
16246 | _("DW_AT_low_pc %s is zero " | |
16247 | "for DIE at 0x%x [in module %s]"), | |
16248 | paddress (gdbarch, part_die->lowpc), | |
4262abfb | 16249 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
16250 | } |
16251 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
16252 | else if (part_die->lowpc >= part_die->highpc) | |
16253 | { | |
bb5ed363 | 16254 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
16255 | |
16256 | complaint (&symfile_complaints, | |
16257 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
16258 | "for DIE at 0x%x [in module %s]"), | |
16259 | paddress (gdbarch, part_die->lowpc), | |
16260 | paddress (gdbarch, part_die->highpc), | |
4262abfb | 16261 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
16262 | } |
16263 | else | |
16264 | part_die->has_pc_info = 1; | |
16265 | } | |
85cbf3d3 | 16266 | |
c906108c SS |
16267 | return info_ptr; |
16268 | } | |
16269 | ||
72bf9492 DJ |
16270 | /* Find a cached partial DIE at OFFSET in CU. */ |
16271 | ||
16272 | static struct partial_die_info * | |
b64f50a1 | 16273 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
16274 | { |
16275 | struct partial_die_info *lookup_die = NULL; | |
16276 | struct partial_die_info part_die; | |
16277 | ||
16278 | part_die.offset = offset; | |
9a3c8263 SM |
16279 | lookup_die = ((struct partial_die_info *) |
16280 | htab_find_with_hash (cu->partial_dies, &part_die, | |
16281 | offset.sect_off)); | |
72bf9492 | 16282 | |
72bf9492 DJ |
16283 | return lookup_die; |
16284 | } | |
16285 | ||
348e048f DE |
16286 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
16287 | except in the case of .debug_types DIEs which do not reference | |
16288 | outside their CU (they do however referencing other types via | |
55f1336d | 16289 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
16290 | |
16291 | static struct partial_die_info * | |
36586728 | 16292 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 16293 | { |
bb5ed363 | 16294 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
16295 | struct dwarf2_per_cu_data *per_cu = NULL; |
16296 | struct partial_die_info *pd = NULL; | |
72bf9492 | 16297 | |
36586728 TT |
16298 | if (offset_in_dwz == cu->per_cu->is_dwz |
16299 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
16300 | { |
16301 | pd = find_partial_die_in_comp_unit (offset, cu); | |
16302 | if (pd != NULL) | |
16303 | return pd; | |
0d99eb77 DE |
16304 | /* We missed recording what we needed. |
16305 | Load all dies and try again. */ | |
16306 | per_cu = cu->per_cu; | |
5afb4e99 | 16307 | } |
0d99eb77 DE |
16308 | else |
16309 | { | |
16310 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 16311 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
16312 | { |
16313 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
16314 | " external reference to offset 0x%lx [in module %s].\n"), | |
16315 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
16316 | bfd_get_filename (objfile->obfd)); | |
16317 | } | |
36586728 TT |
16318 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
16319 | objfile); | |
72bf9492 | 16320 | |
0d99eb77 DE |
16321 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
16322 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 16323 | |
0d99eb77 DE |
16324 | per_cu->cu->last_used = 0; |
16325 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
16326 | } | |
5afb4e99 | 16327 | |
dee91e82 DE |
16328 | /* If we didn't find it, and not all dies have been loaded, |
16329 | load them all and try again. */ | |
16330 | ||
5afb4e99 DJ |
16331 | if (pd == NULL && per_cu->load_all_dies == 0) |
16332 | { | |
5afb4e99 | 16333 | per_cu->load_all_dies = 1; |
fd820528 DE |
16334 | |
16335 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
16336 | THIS_CU->cu may already be in use. So we can't just free it and | |
16337 | replace its DIEs with the ones we read in. Instead, we leave those | |
16338 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
16339 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
16340 | set. */ | |
dee91e82 | 16341 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
16342 | |
16343 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
16344 | } | |
16345 | ||
16346 | if (pd == NULL) | |
16347 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
16348 | _("could not find partial DIE 0x%x " |
16349 | "in cache [from module %s]\n"), | |
b64f50a1 | 16350 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 16351 | return pd; |
72bf9492 DJ |
16352 | } |
16353 | ||
abc72ce4 DE |
16354 | /* See if we can figure out if the class lives in a namespace. We do |
16355 | this by looking for a member function; its demangled name will | |
16356 | contain namespace info, if there is any. */ | |
16357 | ||
16358 | static void | |
16359 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
16360 | struct dwarf2_cu *cu) | |
16361 | { | |
16362 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
16363 | what template types look like, because the demangler | |
16364 | frequently doesn't give the same name as the debug info. We | |
16365 | could fix this by only using the demangled name to get the | |
16366 | prefix (but see comment in read_structure_type). */ | |
16367 | ||
16368 | struct partial_die_info *real_pdi; | |
16369 | struct partial_die_info *child_pdi; | |
16370 | ||
16371 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
16372 | we should not do this. We'll prepend the parent's fully qualified | |
16373 | name when we create the partial symbol. */ | |
16374 | ||
16375 | real_pdi = struct_pdi; | |
16376 | while (real_pdi->has_specification) | |
36586728 TT |
16377 | real_pdi = find_partial_die (real_pdi->spec_offset, |
16378 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
16379 | |
16380 | if (real_pdi->die_parent != NULL) | |
16381 | return; | |
16382 | ||
16383 | for (child_pdi = struct_pdi->die_child; | |
16384 | child_pdi != NULL; | |
16385 | child_pdi = child_pdi->die_sibling) | |
16386 | { | |
16387 | if (child_pdi->tag == DW_TAG_subprogram | |
16388 | && child_pdi->linkage_name != NULL) | |
16389 | { | |
16390 | char *actual_class_name | |
16391 | = language_class_name_from_physname (cu->language_defn, | |
16392 | child_pdi->linkage_name); | |
16393 | if (actual_class_name != NULL) | |
16394 | { | |
16395 | struct_pdi->name | |
224c3ddb SM |
16396 | = ((const char *) |
16397 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
16398 | actual_class_name, | |
16399 | strlen (actual_class_name))); | |
abc72ce4 DE |
16400 | xfree (actual_class_name); |
16401 | } | |
16402 | break; | |
16403 | } | |
16404 | } | |
16405 | } | |
16406 | ||
72bf9492 DJ |
16407 | /* Adjust PART_DIE before generating a symbol for it. This function |
16408 | may set the is_external flag or change the DIE's name. */ | |
16409 | ||
16410 | static void | |
16411 | fixup_partial_die (struct partial_die_info *part_die, | |
16412 | struct dwarf2_cu *cu) | |
16413 | { | |
abc72ce4 DE |
16414 | /* Once we've fixed up a die, there's no point in doing so again. |
16415 | This also avoids a memory leak if we were to call | |
16416 | guess_partial_die_structure_name multiple times. */ | |
16417 | if (part_die->fixup_called) | |
16418 | return; | |
16419 | ||
72bf9492 DJ |
16420 | /* If we found a reference attribute and the DIE has no name, try |
16421 | to find a name in the referred to DIE. */ | |
16422 | ||
16423 | if (part_die->name == NULL && part_die->has_specification) | |
16424 | { | |
16425 | struct partial_die_info *spec_die; | |
72bf9492 | 16426 | |
36586728 TT |
16427 | spec_die = find_partial_die (part_die->spec_offset, |
16428 | part_die->spec_is_dwz, cu); | |
72bf9492 | 16429 | |
10b3939b | 16430 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
16431 | |
16432 | if (spec_die->name) | |
16433 | { | |
16434 | part_die->name = spec_die->name; | |
16435 | ||
16436 | /* Copy DW_AT_external attribute if it is set. */ | |
16437 | if (spec_die->is_external) | |
16438 | part_die->is_external = spec_die->is_external; | |
16439 | } | |
16440 | } | |
16441 | ||
16442 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
16443 | |
16444 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 16445 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 16446 | |
abc72ce4 DE |
16447 | /* If there is no parent die to provide a namespace, and there are |
16448 | children, see if we can determine the namespace from their linkage | |
122d1940 | 16449 | name. */ |
abc72ce4 | 16450 | if (cu->language == language_cplus |
8b70b953 | 16451 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
16452 | && part_die->die_parent == NULL |
16453 | && part_die->has_children | |
16454 | && (part_die->tag == DW_TAG_class_type | |
16455 | || part_die->tag == DW_TAG_structure_type | |
16456 | || part_die->tag == DW_TAG_union_type)) | |
16457 | guess_partial_die_structure_name (part_die, cu); | |
16458 | ||
53832f31 TT |
16459 | /* GCC might emit a nameless struct or union that has a linkage |
16460 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
16461 | if (part_die->name == NULL | |
96408a79 SA |
16462 | && (part_die->tag == DW_TAG_class_type |
16463 | || part_die->tag == DW_TAG_interface_type | |
16464 | || part_die->tag == DW_TAG_structure_type | |
16465 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
16466 | && part_die->linkage_name != NULL) |
16467 | { | |
16468 | char *demangled; | |
16469 | ||
8de20a37 | 16470 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
16471 | if (demangled) |
16472 | { | |
96408a79 SA |
16473 | const char *base; |
16474 | ||
16475 | /* Strip any leading namespaces/classes, keep only the base name. | |
16476 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
16477 | base = strrchr (demangled, ':'); | |
16478 | if (base && base > demangled && base[-1] == ':') | |
16479 | base++; | |
16480 | else | |
16481 | base = demangled; | |
16482 | ||
34a68019 | 16483 | part_die->name |
224c3ddb SM |
16484 | = ((const char *) |
16485 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
16486 | base, strlen (base))); | |
53832f31 TT |
16487 | xfree (demangled); |
16488 | } | |
16489 | } | |
16490 | ||
abc72ce4 | 16491 | part_die->fixup_called = 1; |
72bf9492 DJ |
16492 | } |
16493 | ||
a8329558 | 16494 | /* Read an attribute value described by an attribute form. */ |
c906108c | 16495 | |
d521ce57 | 16496 | static const gdb_byte * |
dee91e82 DE |
16497 | read_attribute_value (const struct die_reader_specs *reader, |
16498 | struct attribute *attr, unsigned form, | |
43988095 | 16499 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 16500 | { |
dee91e82 | 16501 | struct dwarf2_cu *cu = reader->cu; |
3e29f34a MR |
16502 | struct objfile *objfile = cu->objfile; |
16503 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
dee91e82 | 16504 | bfd *abfd = reader->abfd; |
e7c27a73 | 16505 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16506 | unsigned int bytes_read; |
16507 | struct dwarf_block *blk; | |
16508 | ||
aead7601 | 16509 | attr->form = (enum dwarf_form) form; |
a8329558 | 16510 | switch (form) |
c906108c | 16511 | { |
c906108c | 16512 | case DW_FORM_ref_addr: |
ae411497 | 16513 | if (cu->header.version == 2) |
4568ecf9 | 16514 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 16515 | else |
4568ecf9 DE |
16516 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
16517 | &cu->header, &bytes_read); | |
ae411497 TT |
16518 | info_ptr += bytes_read; |
16519 | break; | |
36586728 TT |
16520 | case DW_FORM_GNU_ref_alt: |
16521 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16522 | info_ptr += bytes_read; | |
16523 | break; | |
ae411497 | 16524 | case DW_FORM_addr: |
e7c27a73 | 16525 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 16526 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 16527 | info_ptr += bytes_read; |
c906108c SS |
16528 | break; |
16529 | case DW_FORM_block2: | |
7b5a2f43 | 16530 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16531 | blk->size = read_2_bytes (abfd, info_ptr); |
16532 | info_ptr += 2; | |
16533 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16534 | info_ptr += blk->size; | |
16535 | DW_BLOCK (attr) = blk; | |
16536 | break; | |
16537 | case DW_FORM_block4: | |
7b5a2f43 | 16538 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16539 | blk->size = read_4_bytes (abfd, info_ptr); |
16540 | info_ptr += 4; | |
16541 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16542 | info_ptr += blk->size; | |
16543 | DW_BLOCK (attr) = blk; | |
16544 | break; | |
16545 | case DW_FORM_data2: | |
16546 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
16547 | info_ptr += 2; | |
16548 | break; | |
16549 | case DW_FORM_data4: | |
16550 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
16551 | info_ptr += 4; | |
16552 | break; | |
16553 | case DW_FORM_data8: | |
16554 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
16555 | info_ptr += 8; | |
16556 | break; | |
2dc7f7b3 TT |
16557 | case DW_FORM_sec_offset: |
16558 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16559 | info_ptr += bytes_read; | |
16560 | break; | |
c906108c | 16561 | case DW_FORM_string: |
9b1c24c8 | 16562 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 16563 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
16564 | info_ptr += bytes_read; |
16565 | break; | |
4bdf3d34 | 16566 | case DW_FORM_strp: |
36586728 TT |
16567 | if (!cu->per_cu->is_dwz) |
16568 | { | |
16569 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
16570 | &bytes_read); | |
16571 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16572 | info_ptr += bytes_read; | |
16573 | break; | |
16574 | } | |
16575 | /* FALLTHROUGH */ | |
43988095 JK |
16576 | case DW_FORM_line_strp: |
16577 | if (!cu->per_cu->is_dwz) | |
16578 | { | |
16579 | DW_STRING (attr) = read_indirect_line_string (abfd, info_ptr, | |
16580 | cu_header, &bytes_read); | |
16581 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16582 | info_ptr += bytes_read; | |
16583 | break; | |
16584 | } | |
16585 | /* FALLTHROUGH */ | |
36586728 TT |
16586 | case DW_FORM_GNU_strp_alt: |
16587 | { | |
16588 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
16589 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
16590 | &bytes_read); | |
16591 | ||
16592 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
16593 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16594 | info_ptr += bytes_read; | |
16595 | } | |
4bdf3d34 | 16596 | break; |
2dc7f7b3 | 16597 | case DW_FORM_exprloc: |
c906108c | 16598 | case DW_FORM_block: |
7b5a2f43 | 16599 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16600 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16601 | info_ptr += bytes_read; | |
16602 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16603 | info_ptr += blk->size; | |
16604 | DW_BLOCK (attr) = blk; | |
16605 | break; | |
16606 | case DW_FORM_block1: | |
7b5a2f43 | 16607 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16608 | blk->size = read_1_byte (abfd, info_ptr); |
16609 | info_ptr += 1; | |
16610 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16611 | info_ptr += blk->size; | |
16612 | DW_BLOCK (attr) = blk; | |
16613 | break; | |
16614 | case DW_FORM_data1: | |
16615 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16616 | info_ptr += 1; | |
16617 | break; | |
16618 | case DW_FORM_flag: | |
16619 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16620 | info_ptr += 1; | |
16621 | break; | |
2dc7f7b3 TT |
16622 | case DW_FORM_flag_present: |
16623 | DW_UNSND (attr) = 1; | |
16624 | break; | |
c906108c SS |
16625 | case DW_FORM_sdata: |
16626 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
16627 | info_ptr += bytes_read; | |
16628 | break; | |
16629 | case DW_FORM_udata: | |
16630 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16631 | info_ptr += bytes_read; | |
16632 | break; | |
16633 | case DW_FORM_ref1: | |
4568ecf9 DE |
16634 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16635 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
16636 | info_ptr += 1; |
16637 | break; | |
16638 | case DW_FORM_ref2: | |
4568ecf9 DE |
16639 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16640 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
16641 | info_ptr += 2; |
16642 | break; | |
16643 | case DW_FORM_ref4: | |
4568ecf9 DE |
16644 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16645 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
16646 | info_ptr += 4; |
16647 | break; | |
613e1657 | 16648 | case DW_FORM_ref8: |
4568ecf9 DE |
16649 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16650 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
16651 | info_ptr += 8; |
16652 | break; | |
55f1336d | 16653 | case DW_FORM_ref_sig8: |
ac9ec31b | 16654 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
16655 | info_ptr += 8; |
16656 | break; | |
c906108c | 16657 | case DW_FORM_ref_udata: |
4568ecf9 DE |
16658 | DW_UNSND (attr) = (cu->header.offset.sect_off |
16659 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
16660 | info_ptr += bytes_read; |
16661 | break; | |
c906108c | 16662 | case DW_FORM_indirect: |
a8329558 KW |
16663 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16664 | info_ptr += bytes_read; | |
43988095 JK |
16665 | if (form == DW_FORM_implicit_const) |
16666 | { | |
16667 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
16668 | info_ptr += bytes_read; | |
16669 | } | |
16670 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
16671 | info_ptr); | |
16672 | break; | |
16673 | case DW_FORM_implicit_const: | |
16674 | DW_SND (attr) = implicit_const; | |
a8329558 | 16675 | break; |
3019eac3 DE |
16676 | case DW_FORM_GNU_addr_index: |
16677 | if (reader->dwo_file == NULL) | |
16678 | { | |
16679 | /* For now flag a hard error. | |
16680 | Later we can turn this into a complaint. */ | |
16681 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16682 | dwarf_form_name (form), | |
16683 | bfd_get_filename (abfd)); | |
16684 | } | |
16685 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
16686 | info_ptr += bytes_read; | |
16687 | break; | |
16688 | case DW_FORM_GNU_str_index: | |
16689 | if (reader->dwo_file == NULL) | |
16690 | { | |
16691 | /* For now flag a hard error. | |
16692 | Later we can turn this into a complaint if warranted. */ | |
16693 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16694 | dwarf_form_name (form), | |
16695 | bfd_get_filename (abfd)); | |
16696 | } | |
16697 | { | |
16698 | ULONGEST str_index = | |
16699 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16700 | ||
342587c4 | 16701 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
16702 | DW_STRING_IS_CANONICAL (attr) = 0; |
16703 | info_ptr += bytes_read; | |
16704 | } | |
16705 | break; | |
c906108c | 16706 | default: |
8a3fe4f8 | 16707 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
16708 | dwarf_form_name (form), |
16709 | bfd_get_filename (abfd)); | |
c906108c | 16710 | } |
28e94949 | 16711 | |
36586728 | 16712 | /* Super hack. */ |
7771576e | 16713 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
16714 | attr->form = DW_FORM_GNU_ref_alt; |
16715 | ||
28e94949 JB |
16716 | /* We have seen instances where the compiler tried to emit a byte |
16717 | size attribute of -1 which ended up being encoded as an unsigned | |
16718 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
16719 | an object of this size seems pretty unlikely so we can relatively | |
16720 | safely treat these cases as if the size attribute was invalid and | |
16721 | treat them as zero by default. */ | |
16722 | if (attr->name == DW_AT_byte_size | |
16723 | && form == DW_FORM_data4 | |
16724 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
16725 | { |
16726 | complaint | |
16727 | (&symfile_complaints, | |
43bbcdc2 PH |
16728 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
16729 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
16730 | DW_UNSND (attr) = 0; |
16731 | } | |
28e94949 | 16732 | |
c906108c SS |
16733 | return info_ptr; |
16734 | } | |
16735 | ||
a8329558 KW |
16736 | /* Read an attribute described by an abbreviated attribute. */ |
16737 | ||
d521ce57 | 16738 | static const gdb_byte * |
dee91e82 DE |
16739 | read_attribute (const struct die_reader_specs *reader, |
16740 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 16741 | const gdb_byte *info_ptr) |
a8329558 KW |
16742 | { |
16743 | attr->name = abbrev->name; | |
43988095 JK |
16744 | return read_attribute_value (reader, attr, abbrev->form, |
16745 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
16746 | } |
16747 | ||
0963b4bd | 16748 | /* Read dwarf information from a buffer. */ |
c906108c SS |
16749 | |
16750 | static unsigned int | |
a1855c1d | 16751 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16752 | { |
fe1b8b76 | 16753 | return bfd_get_8 (abfd, buf); |
c906108c SS |
16754 | } |
16755 | ||
16756 | static int | |
a1855c1d | 16757 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16758 | { |
fe1b8b76 | 16759 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
16760 | } |
16761 | ||
16762 | static unsigned int | |
a1855c1d | 16763 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16764 | { |
fe1b8b76 | 16765 | return bfd_get_16 (abfd, buf); |
c906108c SS |
16766 | } |
16767 | ||
21ae7a4d | 16768 | static int |
a1855c1d | 16769 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16770 | { |
16771 | return bfd_get_signed_16 (abfd, buf); | |
16772 | } | |
16773 | ||
c906108c | 16774 | static unsigned int |
a1855c1d | 16775 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16776 | { |
fe1b8b76 | 16777 | return bfd_get_32 (abfd, buf); |
c906108c SS |
16778 | } |
16779 | ||
21ae7a4d | 16780 | static int |
a1855c1d | 16781 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16782 | { |
16783 | return bfd_get_signed_32 (abfd, buf); | |
16784 | } | |
16785 | ||
93311388 | 16786 | static ULONGEST |
a1855c1d | 16787 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16788 | { |
fe1b8b76 | 16789 | return bfd_get_64 (abfd, buf); |
c906108c SS |
16790 | } |
16791 | ||
16792 | static CORE_ADDR | |
d521ce57 | 16793 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 16794 | unsigned int *bytes_read) |
c906108c | 16795 | { |
e7c27a73 | 16796 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16797 | CORE_ADDR retval = 0; |
16798 | ||
107d2387 | 16799 | if (cu_header->signed_addr_p) |
c906108c | 16800 | { |
107d2387 AC |
16801 | switch (cu_header->addr_size) |
16802 | { | |
16803 | case 2: | |
fe1b8b76 | 16804 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
16805 | break; |
16806 | case 4: | |
fe1b8b76 | 16807 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
16808 | break; |
16809 | case 8: | |
fe1b8b76 | 16810 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
16811 | break; |
16812 | default: | |
8e65ff28 | 16813 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 16814 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 16815 | bfd_get_filename (abfd)); |
107d2387 AC |
16816 | } |
16817 | } | |
16818 | else | |
16819 | { | |
16820 | switch (cu_header->addr_size) | |
16821 | { | |
16822 | case 2: | |
fe1b8b76 | 16823 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
16824 | break; |
16825 | case 4: | |
fe1b8b76 | 16826 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
16827 | break; |
16828 | case 8: | |
fe1b8b76 | 16829 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
16830 | break; |
16831 | default: | |
8e65ff28 | 16832 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
16833 | _("read_address: bad switch, " |
16834 | "unsigned [in module %s]"), | |
659b0389 | 16835 | bfd_get_filename (abfd)); |
107d2387 | 16836 | } |
c906108c | 16837 | } |
64367e0a | 16838 | |
107d2387 AC |
16839 | *bytes_read = cu_header->addr_size; |
16840 | return retval; | |
c906108c SS |
16841 | } |
16842 | ||
f7ef9339 | 16843 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
16844 | specification allows the initial length to take up either 4 bytes |
16845 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
16846 | bytes describe the length and all offsets will be 8 bytes in length | |
16847 | instead of 4. | |
16848 | ||
f7ef9339 KB |
16849 | An older, non-standard 64-bit format is also handled by this |
16850 | function. The older format in question stores the initial length | |
16851 | as an 8-byte quantity without an escape value. Lengths greater | |
16852 | than 2^32 aren't very common which means that the initial 4 bytes | |
16853 | is almost always zero. Since a length value of zero doesn't make | |
16854 | sense for the 32-bit format, this initial zero can be considered to | |
16855 | be an escape value which indicates the presence of the older 64-bit | |
16856 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
16857 | greater than 4GB. If it becomes necessary to handle lengths |
16858 | somewhat larger than 4GB, we could allow other small values (such | |
16859 | as the non-sensical values of 1, 2, and 3) to also be used as | |
16860 | escape values indicating the presence of the old format. | |
f7ef9339 | 16861 | |
917c78fc MK |
16862 | The value returned via bytes_read should be used to increment the |
16863 | relevant pointer after calling read_initial_length(). | |
c764a876 | 16864 | |
613e1657 KB |
16865 | [ Note: read_initial_length() and read_offset() are based on the |
16866 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 16867 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
16868 | from: |
16869 | ||
f7ef9339 | 16870 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 16871 | |
613e1657 KB |
16872 | This document is only a draft and is subject to change. (So beware.) |
16873 | ||
f7ef9339 | 16874 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
16875 | determined empirically by examining 64-bit ELF files produced by |
16876 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
16877 | |
16878 | - Kevin, July 16, 2002 | |
613e1657 KB |
16879 | ] */ |
16880 | ||
16881 | static LONGEST | |
d521ce57 | 16882 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 16883 | { |
fe1b8b76 | 16884 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 16885 | |
dd373385 | 16886 | if (length == 0xffffffff) |
613e1657 | 16887 | { |
fe1b8b76 | 16888 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 16889 | *bytes_read = 12; |
613e1657 | 16890 | } |
dd373385 | 16891 | else if (length == 0) |
f7ef9339 | 16892 | { |
dd373385 | 16893 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 16894 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 16895 | *bytes_read = 8; |
f7ef9339 | 16896 | } |
613e1657 KB |
16897 | else |
16898 | { | |
16899 | *bytes_read = 4; | |
613e1657 KB |
16900 | } |
16901 | ||
c764a876 DE |
16902 | return length; |
16903 | } | |
dd373385 | 16904 | |
c764a876 DE |
16905 | /* Cover function for read_initial_length. |
16906 | Returns the length of the object at BUF, and stores the size of the | |
16907 | initial length in *BYTES_READ and stores the size that offsets will be in | |
16908 | *OFFSET_SIZE. | |
16909 | If the initial length size is not equivalent to that specified in | |
16910 | CU_HEADER then issue a complaint. | |
16911 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 16912 | |
c764a876 | 16913 | static LONGEST |
d521ce57 | 16914 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
16915 | const struct comp_unit_head *cu_header, |
16916 | unsigned int *bytes_read, | |
16917 | unsigned int *offset_size) | |
16918 | { | |
16919 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
16920 | ||
16921 | gdb_assert (cu_header->initial_length_size == 4 | |
16922 | || cu_header->initial_length_size == 8 | |
16923 | || cu_header->initial_length_size == 12); | |
16924 | ||
16925 | if (cu_header->initial_length_size != *bytes_read) | |
16926 | complaint (&symfile_complaints, | |
16927 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 16928 | |
c764a876 | 16929 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 16930 | return length; |
613e1657 KB |
16931 | } |
16932 | ||
16933 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 16934 | given by cu_header->offset_size. */ |
613e1657 KB |
16935 | |
16936 | static LONGEST | |
d521ce57 TT |
16937 | read_offset (bfd *abfd, const gdb_byte *buf, |
16938 | const struct comp_unit_head *cu_header, | |
891d2f0b | 16939 | unsigned int *bytes_read) |
c764a876 DE |
16940 | { |
16941 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 16942 | |
c764a876 DE |
16943 | *bytes_read = cu_header->offset_size; |
16944 | return offset; | |
16945 | } | |
16946 | ||
16947 | /* Read an offset from the data stream. */ | |
16948 | ||
16949 | static LONGEST | |
d521ce57 | 16950 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
16951 | { |
16952 | LONGEST retval = 0; | |
16953 | ||
c764a876 | 16954 | switch (offset_size) |
613e1657 KB |
16955 | { |
16956 | case 4: | |
fe1b8b76 | 16957 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
16958 | break; |
16959 | case 8: | |
fe1b8b76 | 16960 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
16961 | break; |
16962 | default: | |
8e65ff28 | 16963 | internal_error (__FILE__, __LINE__, |
c764a876 | 16964 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 16965 | bfd_get_filename (abfd)); |
613e1657 KB |
16966 | } |
16967 | ||
917c78fc | 16968 | return retval; |
613e1657 KB |
16969 | } |
16970 | ||
d521ce57 TT |
16971 | static const gdb_byte * |
16972 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
16973 | { |
16974 | /* If the size of a host char is 8 bits, we can return a pointer | |
16975 | to the buffer, otherwise we have to copy the data to a buffer | |
16976 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16977 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 16978 | return buf; |
c906108c SS |
16979 | } |
16980 | ||
d521ce57 TT |
16981 | static const char * |
16982 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
16983 | unsigned int *bytes_read_ptr) | |
c906108c SS |
16984 | { |
16985 | /* If the size of a host char is 8 bits, we can return a pointer | |
16986 | to the string, otherwise we have to copy the string to a buffer | |
16987 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16988 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
16989 | if (*buf == '\0') |
16990 | { | |
16991 | *bytes_read_ptr = 1; | |
16992 | return NULL; | |
16993 | } | |
d521ce57 TT |
16994 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
16995 | return (const char *) buf; | |
4bdf3d34 JJ |
16996 | } |
16997 | ||
43988095 JK |
16998 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
16999 | reporting strings FORM_NAME and SECT_NAME. */ | |
17000 | ||
d521ce57 | 17001 | static const char * |
43988095 JK |
17002 | read_indirect_string_at_offset_from (bfd *abfd, LONGEST str_offset, |
17003 | struct dwarf2_section_info *sect, | |
17004 | const char *form_name, | |
17005 | const char *sect_name) | |
17006 | { | |
17007 | dwarf2_read_section (dwarf2_per_objfile->objfile, sect); | |
17008 | if (sect->buffer == NULL) | |
17009 | error (_("%s used without %s section [in module %s]"), | |
17010 | form_name, sect_name, bfd_get_filename (abfd)); | |
17011 | if (str_offset >= sect->size) | |
17012 | error (_("%s pointing outside of %s section [in module %s]"), | |
17013 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 17014 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 17015 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 17016 | return NULL; |
43988095 JK |
17017 | return (const char *) (sect->buffer + str_offset); |
17018 | } | |
17019 | ||
17020 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
17021 | ||
17022 | static const char * | |
17023 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) | |
17024 | { | |
17025 | return read_indirect_string_at_offset_from (abfd, str_offset, | |
17026 | &dwarf2_per_objfile->str, | |
17027 | "DW_FORM_strp", ".debug_str"); | |
17028 | } | |
17029 | ||
17030 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
17031 | ||
17032 | static const char * | |
17033 | read_indirect_line_string_at_offset (bfd *abfd, LONGEST str_offset) | |
17034 | { | |
17035 | return read_indirect_string_at_offset_from (abfd, str_offset, | |
17036 | &dwarf2_per_objfile->line_str, | |
17037 | "DW_FORM_line_strp", | |
17038 | ".debug_line_str"); | |
c906108c SS |
17039 | } |
17040 | ||
36586728 TT |
17041 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
17042 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
17043 | the string consists of a single NUL byte, return NULL; otherwise | |
17044 | return a pointer to the string. */ | |
17045 | ||
d521ce57 | 17046 | static const char * |
36586728 TT |
17047 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
17048 | { | |
17049 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
17050 | ||
17051 | if (dwz->str.buffer == NULL) | |
17052 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
17053 | "section [in module %s]"), | |
17054 | bfd_get_filename (dwz->dwz_bfd)); | |
17055 | if (str_offset >= dwz->str.size) | |
17056 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
17057 | ".debug_str section [in module %s]"), | |
17058 | bfd_get_filename (dwz->dwz_bfd)); | |
17059 | gdb_assert (HOST_CHAR_BIT == 8); | |
17060 | if (dwz->str.buffer[str_offset] == '\0') | |
17061 | return NULL; | |
d521ce57 | 17062 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
17063 | } |
17064 | ||
43988095 JK |
17065 | /* Return pointer to string at .debug_str offset as read from BUF. |
17066 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
17067 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
17068 | ||
d521ce57 TT |
17069 | static const char * |
17070 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
17071 | const struct comp_unit_head *cu_header, |
17072 | unsigned int *bytes_read_ptr) | |
17073 | { | |
17074 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
17075 | ||
17076 | return read_indirect_string_at_offset (abfd, str_offset); | |
17077 | } | |
17078 | ||
43988095 JK |
17079 | /* Return pointer to string at .debug_line_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 | ||
17083 | static const char * | |
17084 | read_indirect_line_string (bfd *abfd, const gdb_byte *buf, | |
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_line_string_at_offset (abfd, str_offset); | |
17091 | } | |
17092 | ||
17093 | ULONGEST | |
d521ce57 | 17094 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 17095 | unsigned int *bytes_read_ptr) |
c906108c | 17096 | { |
12df843f | 17097 | ULONGEST result; |
ce5d95e1 | 17098 | unsigned int num_read; |
870f88f7 | 17099 | int shift; |
c906108c SS |
17100 | unsigned char byte; |
17101 | ||
17102 | result = 0; | |
17103 | shift = 0; | |
17104 | num_read = 0; | |
c906108c SS |
17105 | while (1) |
17106 | { | |
fe1b8b76 | 17107 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
17108 | buf++; |
17109 | num_read++; | |
12df843f | 17110 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
17111 | if ((byte & 128) == 0) |
17112 | { | |
17113 | break; | |
17114 | } | |
17115 | shift += 7; | |
17116 | } | |
17117 | *bytes_read_ptr = num_read; | |
17118 | return result; | |
17119 | } | |
17120 | ||
12df843f | 17121 | static LONGEST |
d521ce57 TT |
17122 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
17123 | unsigned int *bytes_read_ptr) | |
c906108c | 17124 | { |
12df843f | 17125 | LONGEST result; |
870f88f7 | 17126 | int shift, num_read; |
c906108c SS |
17127 | unsigned char byte; |
17128 | ||
17129 | result = 0; | |
17130 | shift = 0; | |
c906108c | 17131 | num_read = 0; |
c906108c SS |
17132 | while (1) |
17133 | { | |
fe1b8b76 | 17134 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
17135 | buf++; |
17136 | num_read++; | |
12df843f | 17137 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
17138 | shift += 7; |
17139 | if ((byte & 128) == 0) | |
17140 | { | |
17141 | break; | |
17142 | } | |
17143 | } | |
77e0b926 | 17144 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 17145 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
17146 | *bytes_read_ptr = num_read; |
17147 | return result; | |
17148 | } | |
17149 | ||
3019eac3 DE |
17150 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
17151 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
17152 | ADDR_SIZE is the size of addresses from the CU header. */ | |
17153 | ||
17154 | static CORE_ADDR | |
17155 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
17156 | { | |
17157 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
17158 | bfd *abfd = objfile->obfd; | |
17159 | const gdb_byte *info_ptr; | |
17160 | ||
17161 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
17162 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
17163 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 17164 | objfile_name (objfile)); |
3019eac3 DE |
17165 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
17166 | error (_("DW_FORM_addr_index pointing outside of " | |
17167 | ".debug_addr section [in module %s]"), | |
4262abfb | 17168 | objfile_name (objfile)); |
3019eac3 DE |
17169 | info_ptr = (dwarf2_per_objfile->addr.buffer |
17170 | + addr_base + addr_index * addr_size); | |
17171 | if (addr_size == 4) | |
17172 | return bfd_get_32 (abfd, info_ptr); | |
17173 | else | |
17174 | return bfd_get_64 (abfd, info_ptr); | |
17175 | } | |
17176 | ||
17177 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
17178 | ||
17179 | static CORE_ADDR | |
17180 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
17181 | { | |
17182 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
17183 | } | |
17184 | ||
17185 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
17186 | ||
17187 | static CORE_ADDR | |
d521ce57 | 17188 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
17189 | unsigned int *bytes_read) |
17190 | { | |
17191 | bfd *abfd = cu->objfile->obfd; | |
17192 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
17193 | ||
17194 | return read_addr_index (cu, addr_index); | |
17195 | } | |
17196 | ||
17197 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
17198 | back to dwarf2_read_addr_index. */ | |
17199 | ||
17200 | struct dwarf2_read_addr_index_data | |
17201 | { | |
17202 | ULONGEST addr_base; | |
17203 | int addr_size; | |
17204 | }; | |
17205 | ||
17206 | /* die_reader_func for dwarf2_read_addr_index. */ | |
17207 | ||
17208 | static void | |
17209 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 17210 | const gdb_byte *info_ptr, |
3019eac3 DE |
17211 | struct die_info *comp_unit_die, |
17212 | int has_children, | |
17213 | void *data) | |
17214 | { | |
17215 | struct dwarf2_cu *cu = reader->cu; | |
17216 | struct dwarf2_read_addr_index_data *aidata = | |
17217 | (struct dwarf2_read_addr_index_data *) data; | |
17218 | ||
17219 | aidata->addr_base = cu->addr_base; | |
17220 | aidata->addr_size = cu->header.addr_size; | |
17221 | } | |
17222 | ||
17223 | /* Given an index in .debug_addr, fetch the value. | |
17224 | NOTE: This can be called during dwarf expression evaluation, | |
17225 | long after the debug information has been read, and thus per_cu->cu | |
17226 | may no longer exist. */ | |
17227 | ||
17228 | CORE_ADDR | |
17229 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
17230 | unsigned int addr_index) | |
17231 | { | |
17232 | struct objfile *objfile = per_cu->objfile; | |
17233 | struct dwarf2_cu *cu = per_cu->cu; | |
17234 | ULONGEST addr_base; | |
17235 | int addr_size; | |
17236 | ||
17237 | /* This is intended to be called from outside this file. */ | |
17238 | dw2_setup (objfile); | |
17239 | ||
17240 | /* We need addr_base and addr_size. | |
17241 | If we don't have PER_CU->cu, we have to get it. | |
17242 | Nasty, but the alternative is storing the needed info in PER_CU, | |
17243 | which at this point doesn't seem justified: it's not clear how frequently | |
17244 | it would get used and it would increase the size of every PER_CU. | |
17245 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
17246 | so we're not in uncharted territory here. | |
17247 | Alas we need to be a bit more complicated as addr_base is contained | |
17248 | in the DIE. | |
17249 | ||
17250 | We don't need to read the entire CU(/TU). | |
17251 | We just need the header and top level die. | |
a1b64ce1 | 17252 | |
3019eac3 | 17253 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 17254 | For now we skip this optimization. */ |
3019eac3 DE |
17255 | |
17256 | if (cu != NULL) | |
17257 | { | |
17258 | addr_base = cu->addr_base; | |
17259 | addr_size = cu->header.addr_size; | |
17260 | } | |
17261 | else | |
17262 | { | |
17263 | struct dwarf2_read_addr_index_data aidata; | |
17264 | ||
a1b64ce1 DE |
17265 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
17266 | we need addr_base. */ | |
17267 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
17268 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
17269 | addr_base = aidata.addr_base; |
17270 | addr_size = aidata.addr_size; | |
17271 | } | |
17272 | ||
17273 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
17274 | } | |
17275 | ||
57d63ce2 DE |
17276 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
17277 | This is only used by the Fission support. */ | |
3019eac3 | 17278 | |
d521ce57 | 17279 | static const char * |
342587c4 | 17280 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 DE |
17281 | { |
17282 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
c5164cbc | 17283 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 17284 | bfd *abfd = objfile->obfd; |
342587c4 | 17285 | struct dwarf2_cu *cu = reader->cu; |
73869dc2 DE |
17286 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
17287 | struct dwarf2_section_info *str_offsets_section = | |
17288 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 17289 | const gdb_byte *info_ptr; |
3019eac3 | 17290 | ULONGEST str_offset; |
57d63ce2 | 17291 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 17292 | |
73869dc2 DE |
17293 | dwarf2_read_section (objfile, str_section); |
17294 | dwarf2_read_section (objfile, str_offsets_section); | |
17295 | if (str_section->buffer == NULL) | |
57d63ce2 | 17296 | error (_("%s used without .debug_str.dwo section" |
3019eac3 | 17297 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 17298 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 17299 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 17300 | error (_("%s used without .debug_str_offsets.dwo section" |
3019eac3 | 17301 | " in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 17302 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 17303 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 17304 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
3019eac3 | 17305 | " section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 17306 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 17307 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
17308 | + str_index * cu->header.offset_size); |
17309 | if (cu->header.offset_size == 4) | |
17310 | str_offset = bfd_get_32 (abfd, info_ptr); | |
17311 | else | |
17312 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 17313 | if (str_offset >= str_section->size) |
57d63ce2 | 17314 | error (_("Offset from %s pointing outside of" |
3019eac3 | 17315 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), |
c5164cbc | 17316 | form_name, (long) cu->header.offset.sect_off, objf_name); |
73869dc2 | 17317 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
17318 | } |
17319 | ||
3019eac3 DE |
17320 | /* Return the length of an LEB128 number in BUF. */ |
17321 | ||
17322 | static int | |
17323 | leb128_size (const gdb_byte *buf) | |
17324 | { | |
17325 | const gdb_byte *begin = buf; | |
17326 | gdb_byte byte; | |
17327 | ||
17328 | while (1) | |
17329 | { | |
17330 | byte = *buf++; | |
17331 | if ((byte & 128) == 0) | |
17332 | return buf - begin; | |
17333 | } | |
17334 | } | |
17335 | ||
c906108c | 17336 | static void |
e142c38c | 17337 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
17338 | { |
17339 | switch (lang) | |
17340 | { | |
17341 | case DW_LANG_C89: | |
76bee0cc | 17342 | case DW_LANG_C99: |
0cfd832f | 17343 | case DW_LANG_C11: |
c906108c | 17344 | case DW_LANG_C: |
d1be3247 | 17345 | case DW_LANG_UPC: |
e142c38c | 17346 | cu->language = language_c; |
c906108c | 17347 | break; |
9c37b5ae | 17348 | case DW_LANG_Java: |
c906108c | 17349 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
17350 | case DW_LANG_C_plus_plus_11: |
17351 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 17352 | cu->language = language_cplus; |
c906108c | 17353 | break; |
6aecb9c2 JB |
17354 | case DW_LANG_D: |
17355 | cu->language = language_d; | |
17356 | break; | |
c906108c SS |
17357 | case DW_LANG_Fortran77: |
17358 | case DW_LANG_Fortran90: | |
b21b22e0 | 17359 | case DW_LANG_Fortran95: |
f7de9aab MW |
17360 | case DW_LANG_Fortran03: |
17361 | case DW_LANG_Fortran08: | |
e142c38c | 17362 | cu->language = language_fortran; |
c906108c | 17363 | break; |
a766d390 DE |
17364 | case DW_LANG_Go: |
17365 | cu->language = language_go; | |
17366 | break; | |
c906108c | 17367 | case DW_LANG_Mips_Assembler: |
e142c38c | 17368 | cu->language = language_asm; |
c906108c SS |
17369 | break; |
17370 | case DW_LANG_Ada83: | |
8aaf0b47 | 17371 | case DW_LANG_Ada95: |
bc5f45f8 JB |
17372 | cu->language = language_ada; |
17373 | break; | |
72019c9c GM |
17374 | case DW_LANG_Modula2: |
17375 | cu->language = language_m2; | |
17376 | break; | |
fe8e67fd PM |
17377 | case DW_LANG_Pascal83: |
17378 | cu->language = language_pascal; | |
17379 | break; | |
22566fbd DJ |
17380 | case DW_LANG_ObjC: |
17381 | cu->language = language_objc; | |
17382 | break; | |
c44af4eb TT |
17383 | case DW_LANG_Rust: |
17384 | case DW_LANG_Rust_old: | |
17385 | cu->language = language_rust; | |
17386 | break; | |
c906108c SS |
17387 | case DW_LANG_Cobol74: |
17388 | case DW_LANG_Cobol85: | |
c906108c | 17389 | default: |
e142c38c | 17390 | cu->language = language_minimal; |
c906108c SS |
17391 | break; |
17392 | } | |
e142c38c | 17393 | cu->language_defn = language_def (cu->language); |
c906108c SS |
17394 | } |
17395 | ||
17396 | /* Return the named attribute or NULL if not there. */ | |
17397 | ||
17398 | static struct attribute * | |
e142c38c | 17399 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 17400 | { |
a48e046c | 17401 | for (;;) |
c906108c | 17402 | { |
a48e046c TT |
17403 | unsigned int i; |
17404 | struct attribute *spec = NULL; | |
17405 | ||
17406 | for (i = 0; i < die->num_attrs; ++i) | |
17407 | { | |
17408 | if (die->attrs[i].name == name) | |
17409 | return &die->attrs[i]; | |
17410 | if (die->attrs[i].name == DW_AT_specification | |
17411 | || die->attrs[i].name == DW_AT_abstract_origin) | |
17412 | spec = &die->attrs[i]; | |
17413 | } | |
17414 | ||
17415 | if (!spec) | |
17416 | break; | |
c906108c | 17417 | |
f2f0e013 | 17418 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 17419 | } |
c5aa993b | 17420 | |
c906108c SS |
17421 | return NULL; |
17422 | } | |
17423 | ||
348e048f DE |
17424 | /* Return the named attribute or NULL if not there, |
17425 | but do not follow DW_AT_specification, etc. | |
17426 | This is for use in contexts where we're reading .debug_types dies. | |
17427 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
17428 | back up the chain, and we want to go down. */ | |
17429 | ||
17430 | static struct attribute * | |
45e58e77 | 17431 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
17432 | { |
17433 | unsigned int i; | |
17434 | ||
17435 | for (i = 0; i < die->num_attrs; ++i) | |
17436 | if (die->attrs[i].name == name) | |
17437 | return &die->attrs[i]; | |
17438 | ||
17439 | return NULL; | |
17440 | } | |
17441 | ||
7d45c7c3 KB |
17442 | /* Return the string associated with a string-typed attribute, or NULL if it |
17443 | is either not found or is of an incorrect type. */ | |
17444 | ||
17445 | static const char * | |
17446 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
17447 | { | |
17448 | struct attribute *attr; | |
17449 | const char *str = NULL; | |
17450 | ||
17451 | attr = dwarf2_attr (die, name, cu); | |
17452 | ||
17453 | if (attr != NULL) | |
17454 | { | |
43988095 JK |
17455 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
17456 | || attr->form == DW_FORM_string || attr->form == DW_FORM_GNU_strp_alt) | |
7d45c7c3 KB |
17457 | str = DW_STRING (attr); |
17458 | else | |
17459 | complaint (&symfile_complaints, | |
17460 | _("string type expected for attribute %s for " | |
17461 | "DIE at 0x%x in module %s"), | |
17462 | dwarf_attr_name (name), die->offset.sect_off, | |
17463 | objfile_name (cu->objfile)); | |
17464 | } | |
17465 | ||
17466 | return str; | |
17467 | } | |
17468 | ||
05cf31d1 JB |
17469 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
17470 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 17471 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
17472 | |
17473 | static int | |
17474 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
17475 | { | |
17476 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
17477 | ||
17478 | return (attr && DW_UNSND (attr)); | |
17479 | } | |
17480 | ||
3ca72b44 | 17481 | static int |
e142c38c | 17482 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 17483 | { |
05cf31d1 JB |
17484 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
17485 | which value is non-zero. However, we have to be careful with | |
17486 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
17487 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
17488 | end up accidently finding a declaration attribute that belongs | |
17489 | to a different DIE referenced by the specification attribute, | |
17490 | even though the given DIE does not have a declaration attribute. */ | |
17491 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
17492 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
17493 | } |
17494 | ||
63d06c5c | 17495 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 17496 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
17497 | containing the return value on output. If there is no |
17498 | specification, but there is an abstract origin, that is | |
17499 | returned. */ | |
63d06c5c DC |
17500 | |
17501 | static struct die_info * | |
f2f0e013 | 17502 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 17503 | { |
f2f0e013 DJ |
17504 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
17505 | *spec_cu); | |
63d06c5c | 17506 | |
edb3359d DJ |
17507 | if (spec_attr == NULL) |
17508 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
17509 | ||
63d06c5c DC |
17510 | if (spec_attr == NULL) |
17511 | return NULL; | |
17512 | else | |
f2f0e013 | 17513 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 17514 | } |
c906108c | 17515 | |
debd256d | 17516 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
17517 | refers to. |
17518 | NOTE: This is also used as a "cleanup" function. */ | |
17519 | ||
debd256d JB |
17520 | static void |
17521 | free_line_header (struct line_header *lh) | |
17522 | { | |
17523 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 17524 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
17525 | |
17526 | /* Remember that all the lh->file_names[i].name pointers are | |
17527 | pointers into debug_line_buffer, and don't need to be freed. */ | |
17528 | if (lh->file_names) | |
a8bc7b56 | 17529 | xfree (lh->file_names); |
debd256d JB |
17530 | |
17531 | /* Similarly for the include directory names. */ | |
17532 | if (lh->include_dirs) | |
a8bc7b56 | 17533 | xfree (lh->include_dirs); |
debd256d | 17534 | |
a8bc7b56 | 17535 | xfree (lh); |
debd256d JB |
17536 | } |
17537 | ||
527f3840 JK |
17538 | /* Stub for free_line_header to match void * callback types. */ |
17539 | ||
17540 | static void | |
17541 | free_line_header_voidp (void *arg) | |
17542 | { | |
9a3c8263 | 17543 | struct line_header *lh = (struct line_header *) arg; |
527f3840 JK |
17544 | |
17545 | free_line_header (lh); | |
17546 | } | |
17547 | ||
debd256d | 17548 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 17549 | |
debd256d | 17550 | static void |
d521ce57 | 17551 | add_include_dir (struct line_header *lh, const char *include_dir) |
c906108c | 17552 | { |
27e0867f DE |
17553 | if (dwarf_line_debug >= 2) |
17554 | fprintf_unfiltered (gdb_stdlog, "Adding dir %u: %s\n", | |
17555 | lh->num_include_dirs + 1, include_dir); | |
17556 | ||
debd256d JB |
17557 | /* Grow the array if necessary. */ |
17558 | if (lh->include_dirs_size == 0) | |
c5aa993b | 17559 | { |
debd256d | 17560 | lh->include_dirs_size = 1; /* for testing */ |
8d749320 | 17561 | lh->include_dirs = XNEWVEC (const char *, lh->include_dirs_size); |
debd256d JB |
17562 | } |
17563 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
17564 | { | |
17565 | lh->include_dirs_size *= 2; | |
8d749320 SM |
17566 | lh->include_dirs = XRESIZEVEC (const char *, lh->include_dirs, |
17567 | lh->include_dirs_size); | |
c5aa993b | 17568 | } |
c906108c | 17569 | |
debd256d JB |
17570 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
17571 | } | |
6e70227d | 17572 | |
debd256d | 17573 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 17574 | |
debd256d JB |
17575 | static void |
17576 | add_file_name (struct line_header *lh, | |
d521ce57 | 17577 | const char *name, |
debd256d JB |
17578 | unsigned int dir_index, |
17579 | unsigned int mod_time, | |
17580 | unsigned int length) | |
17581 | { | |
17582 | struct file_entry *fe; | |
17583 | ||
27e0867f DE |
17584 | if (dwarf_line_debug >= 2) |
17585 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
17586 | lh->num_file_names + 1, name); | |
17587 | ||
debd256d JB |
17588 | /* Grow the array if necessary. */ |
17589 | if (lh->file_names_size == 0) | |
17590 | { | |
17591 | lh->file_names_size = 1; /* for testing */ | |
8d749320 | 17592 | lh->file_names = XNEWVEC (struct file_entry, lh->file_names_size); |
debd256d JB |
17593 | } |
17594 | else if (lh->num_file_names >= lh->file_names_size) | |
17595 | { | |
17596 | lh->file_names_size *= 2; | |
224c3ddb SM |
17597 | lh->file_names |
17598 | = XRESIZEVEC (struct file_entry, lh->file_names, lh->file_names_size); | |
debd256d JB |
17599 | } |
17600 | ||
17601 | fe = &lh->file_names[lh->num_file_names++]; | |
17602 | fe->name = name; | |
17603 | fe->dir_index = dir_index; | |
17604 | fe->mod_time = mod_time; | |
17605 | fe->length = length; | |
aaa75496 | 17606 | fe->included_p = 0; |
cb1df416 | 17607 | fe->symtab = NULL; |
debd256d | 17608 | } |
6e70227d | 17609 | |
83769d0b | 17610 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
17611 | |
17612 | static struct dwarf2_section_info * | |
17613 | get_debug_line_section (struct dwarf2_cu *cu) | |
17614 | { | |
17615 | struct dwarf2_section_info *section; | |
17616 | ||
17617 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
17618 | DWO file. */ | |
17619 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
17620 | section = &cu->dwo_unit->dwo_file->sections.line; | |
17621 | else if (cu->per_cu->is_dwz) | |
17622 | { | |
17623 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
17624 | ||
17625 | section = &dwz->line; | |
17626 | } | |
17627 | else | |
17628 | section = &dwarf2_per_objfile->line; | |
17629 | ||
17630 | return section; | |
17631 | } | |
17632 | ||
43988095 JK |
17633 | /* Forwarding function for read_formatted_entries. */ |
17634 | ||
17635 | static void | |
17636 | add_include_dir_stub (struct line_header *lh, const char *name, | |
17637 | unsigned int dir_index, unsigned int mod_time, | |
17638 | unsigned int length) | |
17639 | { | |
17640 | add_include_dir (lh, name); | |
17641 | } | |
17642 | ||
17643 | /* Read directory or file name entry format, starting with byte of | |
17644 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
17645 | entries count and the entries themselves in the described entry | |
17646 | format. */ | |
17647 | ||
17648 | static void | |
17649 | read_formatted_entries (bfd *abfd, const gdb_byte **bufp, | |
17650 | struct line_header *lh, | |
17651 | const struct comp_unit_head *cu_header, | |
17652 | void (*callback) (struct line_header *lh, | |
17653 | const char *name, | |
17654 | unsigned int dir_index, | |
17655 | unsigned int mod_time, | |
17656 | unsigned int length)) | |
17657 | { | |
17658 | gdb_byte format_count, formati; | |
17659 | ULONGEST data_count, datai; | |
17660 | const gdb_byte *buf = *bufp; | |
17661 | const gdb_byte *format_header_data; | |
17662 | int i; | |
17663 | unsigned int bytes_read; | |
17664 | ||
17665 | format_count = read_1_byte (abfd, buf); | |
17666 | buf += 1; | |
17667 | format_header_data = buf; | |
17668 | for (formati = 0; formati < format_count; formati++) | |
17669 | { | |
17670 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
17671 | buf += bytes_read; | |
17672 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
17673 | buf += bytes_read; | |
17674 | } | |
17675 | ||
17676 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
17677 | buf += bytes_read; | |
17678 | for (datai = 0; datai < data_count; datai++) | |
17679 | { | |
17680 | const gdb_byte *format = format_header_data; | |
17681 | struct file_entry fe; | |
17682 | ||
17683 | memset (&fe, 0, sizeof (fe)); | |
17684 | ||
17685 | for (formati = 0; formati < format_count; formati++) | |
17686 | { | |
17687 | ULONGEST content_type, form; | |
17688 | const char *string_trash; | |
17689 | const char **stringp = &string_trash; | |
17690 | unsigned int uint_trash, *uintp = &uint_trash; | |
17691 | ||
17692 | content_type = read_unsigned_leb128 (abfd, format, &bytes_read); | |
17693 | format += bytes_read; | |
17694 | switch (content_type) | |
17695 | { | |
17696 | case DW_LNCT_path: | |
17697 | stringp = &fe.name; | |
17698 | break; | |
17699 | case DW_LNCT_directory_index: | |
17700 | uintp = &fe.dir_index; | |
17701 | break; | |
17702 | case DW_LNCT_timestamp: | |
17703 | uintp = &fe.mod_time; | |
17704 | break; | |
17705 | case DW_LNCT_size: | |
17706 | uintp = &fe.length; | |
17707 | break; | |
17708 | case DW_LNCT_MD5: | |
17709 | break; | |
17710 | default: | |
17711 | complaint (&symfile_complaints, | |
17712 | _("Unknown format content type %s"), | |
17713 | pulongest (content_type)); | |
17714 | } | |
17715 | ||
17716 | form = read_unsigned_leb128 (abfd, format, &bytes_read); | |
17717 | format += bytes_read; | |
17718 | switch (form) | |
17719 | { | |
17720 | case DW_FORM_string: | |
17721 | *stringp = read_direct_string (abfd, buf, &bytes_read); | |
17722 | buf += bytes_read; | |
17723 | break; | |
17724 | ||
17725 | case DW_FORM_line_strp: | |
17726 | *stringp = read_indirect_line_string (abfd, buf, cu_header, &bytes_read); | |
17727 | buf += bytes_read; | |
17728 | break; | |
17729 | ||
17730 | case DW_FORM_data1: | |
17731 | *uintp = read_1_byte (abfd, buf); | |
17732 | buf += 1; | |
17733 | break; | |
17734 | ||
17735 | case DW_FORM_data2: | |
17736 | *uintp = read_2_bytes (abfd, buf); | |
17737 | buf += 2; | |
17738 | break; | |
17739 | ||
17740 | case DW_FORM_data4: | |
17741 | *uintp = read_4_bytes (abfd, buf); | |
17742 | buf += 4; | |
17743 | break; | |
17744 | ||
17745 | case DW_FORM_data8: | |
17746 | *uintp = read_8_bytes (abfd, buf); | |
17747 | buf += 8; | |
17748 | break; | |
17749 | ||
17750 | case DW_FORM_udata: | |
17751 | *uintp = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
17752 | buf += bytes_read; | |
17753 | break; | |
17754 | ||
17755 | case DW_FORM_block: | |
17756 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
17757 | current GDB. */ | |
17758 | break; | |
17759 | } | |
17760 | } | |
17761 | ||
17762 | callback (lh, fe.name, fe.dir_index, fe.mod_time, fe.length); | |
17763 | } | |
17764 | ||
17765 | *bufp = buf; | |
17766 | } | |
17767 | ||
debd256d | 17768 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 17769 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 17770 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
17771 | Returns NULL if there is a problem reading the header, e.g., if it |
17772 | has a version we don't understand. | |
debd256d JB |
17773 | |
17774 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
17775 | the returned object point into the dwarf line section buffer, |
17776 | and must not be freed. */ | |
ae2de4f8 | 17777 | |
debd256d | 17778 | static struct line_header * |
3019eac3 | 17779 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
17780 | { |
17781 | struct cleanup *back_to; | |
17782 | struct line_header *lh; | |
d521ce57 | 17783 | const gdb_byte *line_ptr; |
c764a876 | 17784 | unsigned int bytes_read, offset_size; |
debd256d | 17785 | int i; |
d521ce57 | 17786 | const char *cur_dir, *cur_file; |
3019eac3 DE |
17787 | struct dwarf2_section_info *section; |
17788 | bfd *abfd; | |
17789 | ||
36586728 | 17790 | section = get_debug_line_section (cu); |
3019eac3 DE |
17791 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
17792 | if (section->buffer == NULL) | |
debd256d | 17793 | { |
3019eac3 DE |
17794 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
17795 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
17796 | else | |
17797 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
17798 | return 0; |
17799 | } | |
17800 | ||
fceca515 DE |
17801 | /* We can't do this until we know the section is non-empty. |
17802 | Only then do we know we have such a section. */ | |
a32a8923 | 17803 | abfd = get_section_bfd_owner (section); |
fceca515 | 17804 | |
a738430d MK |
17805 | /* Make sure that at least there's room for the total_length field. |
17806 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 17807 | if (offset + 4 >= section->size) |
debd256d | 17808 | { |
4d3c2250 | 17809 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
17810 | return 0; |
17811 | } | |
17812 | ||
8d749320 | 17813 | lh = XNEW (struct line_header); |
debd256d JB |
17814 | memset (lh, 0, sizeof (*lh)); |
17815 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
17816 | (void *) lh); | |
17817 | ||
527f3840 JK |
17818 | lh->offset.sect_off = offset; |
17819 | lh->offset_in_dwz = cu->per_cu->is_dwz; | |
17820 | ||
3019eac3 | 17821 | line_ptr = section->buffer + offset; |
debd256d | 17822 | |
a738430d | 17823 | /* Read in the header. */ |
6e70227d | 17824 | lh->total_length = |
c764a876 DE |
17825 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
17826 | &bytes_read, &offset_size); | |
debd256d | 17827 | line_ptr += bytes_read; |
3019eac3 | 17828 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 17829 | { |
4d3c2250 | 17830 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
2f324bf6 | 17831 | do_cleanups (back_to); |
debd256d JB |
17832 | return 0; |
17833 | } | |
17834 | lh->statement_program_end = line_ptr + lh->total_length; | |
17835 | lh->version = read_2_bytes (abfd, line_ptr); | |
17836 | line_ptr += 2; | |
43988095 | 17837 | if (lh->version > 5) |
cd366ee8 DE |
17838 | { |
17839 | /* This is a version we don't understand. The format could have | |
17840 | changed in ways we don't handle properly so just punt. */ | |
17841 | complaint (&symfile_complaints, | |
17842 | _("unsupported version in .debug_line section")); | |
17843 | return NULL; | |
17844 | } | |
43988095 JK |
17845 | if (lh->version >= 5) |
17846 | { | |
17847 | gdb_byte segment_selector_size; | |
17848 | ||
17849 | /* Skip address size. */ | |
17850 | read_1_byte (abfd, line_ptr); | |
17851 | line_ptr += 1; | |
17852 | ||
17853 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
17854 | line_ptr += 1; | |
17855 | if (segment_selector_size != 0) | |
17856 | { | |
17857 | complaint (&symfile_complaints, | |
17858 | _("unsupported segment selector size %u " | |
17859 | "in .debug_line section"), | |
17860 | segment_selector_size); | |
17861 | return NULL; | |
17862 | } | |
17863 | } | |
c764a876 DE |
17864 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
17865 | line_ptr += offset_size; | |
debd256d JB |
17866 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
17867 | line_ptr += 1; | |
2dc7f7b3 TT |
17868 | if (lh->version >= 4) |
17869 | { | |
17870 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
17871 | line_ptr += 1; | |
17872 | } | |
17873 | else | |
17874 | lh->maximum_ops_per_instruction = 1; | |
17875 | ||
17876 | if (lh->maximum_ops_per_instruction == 0) | |
17877 | { | |
17878 | lh->maximum_ops_per_instruction = 1; | |
17879 | complaint (&symfile_complaints, | |
3e43a32a MS |
17880 | _("invalid maximum_ops_per_instruction " |
17881 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
17882 | } |
17883 | ||
debd256d JB |
17884 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
17885 | line_ptr += 1; | |
17886 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
17887 | line_ptr += 1; | |
17888 | lh->line_range = read_1_byte (abfd, line_ptr); | |
17889 | line_ptr += 1; | |
17890 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
17891 | line_ptr += 1; | |
8d749320 | 17892 | lh->standard_opcode_lengths = XNEWVEC (unsigned char, lh->opcode_base); |
debd256d JB |
17893 | |
17894 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
17895 | for (i = 1; i < lh->opcode_base; ++i) | |
17896 | { | |
17897 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
17898 | line_ptr += 1; | |
17899 | } | |
17900 | ||
43988095 | 17901 | if (lh->version >= 5) |
debd256d | 17902 | { |
43988095 JK |
17903 | /* Read directory table. */ |
17904 | read_formatted_entries (abfd, &line_ptr, lh, &cu->header, | |
17905 | add_include_dir_stub); | |
debd256d | 17906 | |
43988095 JK |
17907 | /* Read file name table. */ |
17908 | read_formatted_entries (abfd, &line_ptr, lh, &cu->header, add_file_name); | |
17909 | } | |
17910 | else | |
debd256d | 17911 | { |
43988095 JK |
17912 | /* Read directory table. */ |
17913 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
17914 | { | |
17915 | line_ptr += bytes_read; | |
17916 | add_include_dir (lh, cur_dir); | |
17917 | } | |
debd256d JB |
17918 | line_ptr += bytes_read; |
17919 | ||
43988095 JK |
17920 | /* Read file name table. */ |
17921 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
17922 | { | |
17923 | unsigned int dir_index, mod_time, length; | |
17924 | ||
17925 | line_ptr += bytes_read; | |
17926 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17927 | line_ptr += bytes_read; | |
17928 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17929 | line_ptr += bytes_read; | |
17930 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17931 | line_ptr += bytes_read; | |
17932 | ||
17933 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
17934 | } | |
17935 | line_ptr += bytes_read; | |
debd256d | 17936 | } |
6e70227d | 17937 | lh->statement_program_start = line_ptr; |
debd256d | 17938 | |
3019eac3 | 17939 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 17940 | complaint (&symfile_complaints, |
3e43a32a MS |
17941 | _("line number info header doesn't " |
17942 | "fit in `.debug_line' section")); | |
debd256d JB |
17943 | |
17944 | discard_cleanups (back_to); | |
17945 | return lh; | |
17946 | } | |
c906108c | 17947 | |
c6da4cef DE |
17948 | /* Subroutine of dwarf_decode_lines to simplify it. |
17949 | Return the file name of the psymtab for included file FILE_INDEX | |
17950 | in line header LH of PST. | |
17951 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17952 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
17953 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
17954 | ||
17955 | The function creates dangling cleanup registration. */ | |
c6da4cef | 17956 | |
d521ce57 | 17957 | static const char * |
c6da4cef DE |
17958 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
17959 | const struct partial_symtab *pst, | |
17960 | const char *comp_dir) | |
17961 | { | |
17962 | const struct file_entry fe = lh->file_names [file_index]; | |
d521ce57 TT |
17963 | const char *include_name = fe.name; |
17964 | const char *include_name_to_compare = include_name; | |
17965 | const char *dir_name = NULL; | |
72b9f47f TT |
17966 | const char *pst_filename; |
17967 | char *copied_name = NULL; | |
c6da4cef DE |
17968 | int file_is_pst; |
17969 | ||
afa6c9ab | 17970 | if (fe.dir_index && lh->include_dirs != NULL) |
c6da4cef DE |
17971 | dir_name = lh->include_dirs[fe.dir_index - 1]; |
17972 | ||
17973 | if (!IS_ABSOLUTE_PATH (include_name) | |
17974 | && (dir_name != NULL || comp_dir != NULL)) | |
17975 | { | |
17976 | /* Avoid creating a duplicate psymtab for PST. | |
17977 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
17978 | Before we do the comparison, however, we need to account | |
17979 | for DIR_NAME and COMP_DIR. | |
17980 | First prepend dir_name (if non-NULL). If we still don't | |
17981 | have an absolute path prepend comp_dir (if non-NULL). | |
17982 | However, the directory we record in the include-file's | |
17983 | psymtab does not contain COMP_DIR (to match the | |
17984 | corresponding symtab(s)). | |
17985 | ||
17986 | Example: | |
17987 | ||
17988 | bash$ cd /tmp | |
17989 | bash$ gcc -g ./hello.c | |
17990 | include_name = "hello.c" | |
17991 | dir_name = "." | |
17992 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
17993 | DW_AT_name = "./hello.c" |
17994 | ||
17995 | */ | |
c6da4cef DE |
17996 | |
17997 | if (dir_name != NULL) | |
17998 | { | |
d521ce57 TT |
17999 | char *tem = concat (dir_name, SLASH_STRING, |
18000 | include_name, (char *)NULL); | |
18001 | ||
18002 | make_cleanup (xfree, tem); | |
18003 | include_name = tem; | |
c6da4cef | 18004 | include_name_to_compare = include_name; |
c6da4cef DE |
18005 | } |
18006 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
18007 | { | |
d521ce57 TT |
18008 | char *tem = concat (comp_dir, SLASH_STRING, |
18009 | include_name, (char *)NULL); | |
18010 | ||
18011 | make_cleanup (xfree, tem); | |
18012 | include_name_to_compare = tem; | |
c6da4cef DE |
18013 | } |
18014 | } | |
18015 | ||
18016 | pst_filename = pst->filename; | |
18017 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
18018 | { | |
72b9f47f TT |
18019 | copied_name = concat (pst->dirname, SLASH_STRING, |
18020 | pst_filename, (char *)NULL); | |
18021 | pst_filename = copied_name; | |
c6da4cef DE |
18022 | } |
18023 | ||
1e3fad37 | 18024 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 18025 | |
72b9f47f TT |
18026 | if (copied_name != NULL) |
18027 | xfree (copied_name); | |
c6da4cef DE |
18028 | |
18029 | if (file_is_pst) | |
18030 | return NULL; | |
18031 | return include_name; | |
18032 | } | |
18033 | ||
d9b3de22 DE |
18034 | /* State machine to track the state of the line number program. */ |
18035 | ||
18036 | typedef struct | |
18037 | { | |
18038 | /* These are part of the standard DWARF line number state machine. */ | |
18039 | ||
18040 | unsigned char op_index; | |
18041 | unsigned int file; | |
18042 | unsigned int line; | |
18043 | CORE_ADDR address; | |
18044 | int is_stmt; | |
18045 | unsigned int discriminator; | |
18046 | ||
18047 | /* Additional bits of state we need to track. */ | |
18048 | ||
18049 | /* The last file that we called dwarf2_start_subfile for. | |
18050 | This is only used for TLLs. */ | |
18051 | unsigned int last_file; | |
18052 | /* The last file a line number was recorded for. */ | |
18053 | struct subfile *last_subfile; | |
18054 | ||
18055 | /* The function to call to record a line. */ | |
18056 | record_line_ftype *record_line; | |
18057 | ||
18058 | /* The last line number that was recorded, used to coalesce | |
18059 | consecutive entries for the same line. This can happen, for | |
18060 | example, when discriminators are present. PR 17276. */ | |
18061 | unsigned int last_line; | |
18062 | int line_has_non_zero_discriminator; | |
18063 | } lnp_state_machine; | |
18064 | ||
18065 | /* There's a lot of static state to pass to dwarf_record_line. | |
18066 | This keeps it all together. */ | |
18067 | ||
18068 | typedef struct | |
18069 | { | |
18070 | /* The gdbarch. */ | |
18071 | struct gdbarch *gdbarch; | |
18072 | ||
18073 | /* The line number header. */ | |
18074 | struct line_header *line_header; | |
18075 | ||
18076 | /* Non-zero if we're recording lines. | |
18077 | Otherwise we're building partial symtabs and are just interested in | |
18078 | finding include files mentioned by the line number program. */ | |
18079 | int record_lines_p; | |
18080 | } lnp_reader_state; | |
18081 | ||
c91513d8 PP |
18082 | /* Ignore this record_line request. */ |
18083 | ||
18084 | static void | |
18085 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
18086 | { | |
18087 | return; | |
18088 | } | |
18089 | ||
a05a36a5 DE |
18090 | /* Return non-zero if we should add LINE to the line number table. |
18091 | LINE is the line to add, LAST_LINE is the last line that was added, | |
18092 | LAST_SUBFILE is the subfile for LAST_LINE. | |
18093 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
18094 | had a non-zero discriminator. | |
18095 | ||
18096 | We have to be careful in the presence of discriminators. | |
18097 | E.g., for this line: | |
18098 | ||
18099 | for (i = 0; i < 100000; i++); | |
18100 | ||
18101 | clang can emit four line number entries for that one line, | |
18102 | each with a different discriminator. | |
18103 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
18104 | ||
18105 | However, we want gdb to coalesce all four entries into one. | |
18106 | Otherwise the user could stepi into the middle of the line and | |
18107 | gdb would get confused about whether the pc really was in the | |
18108 | middle of the line. | |
18109 | ||
18110 | Things are further complicated by the fact that two consecutive | |
18111 | line number entries for the same line is a heuristic used by gcc | |
18112 | to denote the end of the prologue. So we can't just discard duplicate | |
18113 | entries, we have to be selective about it. The heuristic we use is | |
18114 | that we only collapse consecutive entries for the same line if at least | |
18115 | one of those entries has a non-zero discriminator. PR 17276. | |
18116 | ||
18117 | Note: Addresses in the line number state machine can never go backwards | |
18118 | within one sequence, thus this coalescing is ok. */ | |
18119 | ||
18120 | static int | |
18121 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
18122 | int line_has_non_zero_discriminator, | |
18123 | struct subfile *last_subfile) | |
18124 | { | |
18125 | if (current_subfile != last_subfile) | |
18126 | return 1; | |
18127 | if (line != last_line) | |
18128 | return 1; | |
18129 | /* Same line for the same file that we've seen already. | |
18130 | As a last check, for pr 17276, only record the line if the line | |
18131 | has never had a non-zero discriminator. */ | |
18132 | if (!line_has_non_zero_discriminator) | |
18133 | return 1; | |
18134 | return 0; | |
18135 | } | |
18136 | ||
252a6764 DE |
18137 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
18138 | in the line table of subfile SUBFILE. */ | |
18139 | ||
18140 | static void | |
d9b3de22 DE |
18141 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
18142 | unsigned int line, CORE_ADDR address, | |
18143 | record_line_ftype p_record_line) | |
252a6764 DE |
18144 | { |
18145 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
18146 | ||
27e0867f DE |
18147 | if (dwarf_line_debug) |
18148 | { | |
18149 | fprintf_unfiltered (gdb_stdlog, | |
18150 | "Recording line %u, file %s, address %s\n", | |
18151 | line, lbasename (subfile->name), | |
18152 | paddress (gdbarch, address)); | |
18153 | } | |
18154 | ||
d5962de5 | 18155 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
18156 | } |
18157 | ||
18158 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
18159 | Mark the end of a set of line number records. | |
d9b3de22 | 18160 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
18161 | If SUBFILE is NULL the request is ignored. */ |
18162 | ||
18163 | static void | |
18164 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
18165 | CORE_ADDR address, record_line_ftype p_record_line) | |
18166 | { | |
27e0867f DE |
18167 | if (subfile == NULL) |
18168 | return; | |
18169 | ||
18170 | if (dwarf_line_debug) | |
18171 | { | |
18172 | fprintf_unfiltered (gdb_stdlog, | |
18173 | "Finishing current line, file %s, address %s\n", | |
18174 | lbasename (subfile->name), | |
18175 | paddress (gdbarch, address)); | |
18176 | } | |
18177 | ||
d9b3de22 DE |
18178 | dwarf_record_line_1 (gdbarch, subfile, 0, address, p_record_line); |
18179 | } | |
18180 | ||
18181 | /* Record the line in STATE. | |
18182 | END_SEQUENCE is non-zero if we're processing the end of a sequence. */ | |
18183 | ||
18184 | static void | |
18185 | dwarf_record_line (lnp_reader_state *reader, lnp_state_machine *state, | |
18186 | int end_sequence) | |
18187 | { | |
18188 | const struct line_header *lh = reader->line_header; | |
18189 | unsigned int file, line, discriminator; | |
18190 | int is_stmt; | |
18191 | ||
18192 | file = state->file; | |
18193 | line = state->line; | |
18194 | is_stmt = state->is_stmt; | |
18195 | discriminator = state->discriminator; | |
18196 | ||
18197 | if (dwarf_line_debug) | |
18198 | { | |
18199 | fprintf_unfiltered (gdb_stdlog, | |
18200 | "Processing actual line %u: file %u," | |
18201 | " address %s, is_stmt %u, discrim %u\n", | |
18202 | line, file, | |
18203 | paddress (reader->gdbarch, state->address), | |
18204 | is_stmt, discriminator); | |
18205 | } | |
18206 | ||
18207 | if (file == 0 || file - 1 >= lh->num_file_names) | |
18208 | dwarf2_debug_line_missing_file_complaint (); | |
18209 | /* For now we ignore lines not starting on an instruction boundary. | |
18210 | But not when processing end_sequence for compatibility with the | |
18211 | previous version of the code. */ | |
18212 | else if (state->op_index == 0 || end_sequence) | |
18213 | { | |
18214 | lh->file_names[file - 1].included_p = 1; | |
18215 | if (reader->record_lines_p && is_stmt) | |
18216 | { | |
e815d2d2 | 18217 | if (state->last_subfile != current_subfile || end_sequence) |
d9b3de22 DE |
18218 | { |
18219 | dwarf_finish_line (reader->gdbarch, state->last_subfile, | |
18220 | state->address, state->record_line); | |
18221 | } | |
18222 | ||
18223 | if (!end_sequence) | |
18224 | { | |
18225 | if (dwarf_record_line_p (line, state->last_line, | |
18226 | state->line_has_non_zero_discriminator, | |
18227 | state->last_subfile)) | |
18228 | { | |
18229 | dwarf_record_line_1 (reader->gdbarch, current_subfile, | |
18230 | line, state->address, | |
18231 | state->record_line); | |
18232 | } | |
18233 | state->last_subfile = current_subfile; | |
18234 | state->last_line = line; | |
18235 | } | |
18236 | } | |
18237 | } | |
18238 | } | |
18239 | ||
18240 | /* Initialize STATE for the start of a line number program. */ | |
18241 | ||
18242 | static void | |
18243 | init_lnp_state_machine (lnp_state_machine *state, | |
18244 | const lnp_reader_state *reader) | |
18245 | { | |
18246 | memset (state, 0, sizeof (*state)); | |
18247 | ||
18248 | /* Just starting, there is no "last file". */ | |
18249 | state->last_file = 0; | |
18250 | state->last_subfile = NULL; | |
18251 | ||
18252 | state->record_line = record_line; | |
18253 | ||
18254 | state->last_line = 0; | |
18255 | state->line_has_non_zero_discriminator = 0; | |
18256 | ||
18257 | /* Initialize these according to the DWARF spec. */ | |
18258 | state->op_index = 0; | |
18259 | state->file = 1; | |
18260 | state->line = 1; | |
18261 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there | |
18262 | was a line entry for it so that the backend has a chance to adjust it | |
18263 | and also record it in case it needs it. This is currently used by MIPS | |
18264 | code, cf. `mips_adjust_dwarf2_line'. */ | |
18265 | state->address = gdbarch_adjust_dwarf2_line (reader->gdbarch, 0, 0); | |
18266 | state->is_stmt = reader->line_header->default_is_stmt; | |
18267 | state->discriminator = 0; | |
252a6764 DE |
18268 | } |
18269 | ||
924c2928 DE |
18270 | /* Check address and if invalid nop-out the rest of the lines in this |
18271 | sequence. */ | |
18272 | ||
18273 | static void | |
d9b3de22 | 18274 | check_line_address (struct dwarf2_cu *cu, lnp_state_machine *state, |
924c2928 DE |
18275 | const gdb_byte *line_ptr, |
18276 | CORE_ADDR lowpc, CORE_ADDR address) | |
18277 | { | |
18278 | /* If address < lowpc then it's not a usable value, it's outside the | |
18279 | pc range of the CU. However, we restrict the test to only address | |
18280 | values of zero to preserve GDB's previous behaviour which is to | |
18281 | handle the specific case of a function being GC'd by the linker. */ | |
18282 | ||
18283 | if (address == 0 && address < lowpc) | |
18284 | { | |
18285 | /* This line table is for a function which has been | |
18286 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
18287 | ||
18288 | struct objfile *objfile = cu->objfile; | |
18289 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; | |
18290 | ||
18291 | complaint (&symfile_complaints, | |
18292 | _(".debug_line address at offset 0x%lx is 0 [in module %s]"), | |
18293 | line_offset, objfile_name (objfile)); | |
d9b3de22 DE |
18294 | state->record_line = noop_record_line; |
18295 | /* Note: sm.record_line is left as noop_record_line | |
924c2928 DE |
18296 | until we see DW_LNE_end_sequence. */ |
18297 | } | |
18298 | } | |
18299 | ||
f3f5162e | 18300 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
18301 | Process the line number information in LH. |
18302 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
18303 | program in order to set included_p for every referenced header. */ | |
debd256d | 18304 | |
c906108c | 18305 | static void |
43f3e411 DE |
18306 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
18307 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 18308 | { |
d521ce57 TT |
18309 | const gdb_byte *line_ptr, *extended_end; |
18310 | const gdb_byte *line_end; | |
a8c50c1f | 18311 | unsigned int bytes_read, extended_len; |
699ca60a | 18312 | unsigned char op_code, extended_op; |
e142c38c DJ |
18313 | CORE_ADDR baseaddr; |
18314 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 18315 | bfd *abfd = objfile->obfd; |
fbf65064 | 18316 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
d9b3de22 DE |
18317 | /* Non-zero if we're recording line info (as opposed to building partial |
18318 | symtabs). */ | |
18319 | int record_lines_p = !decode_for_pst_p; | |
18320 | /* A collection of things we need to pass to dwarf_record_line. */ | |
18321 | lnp_reader_state reader_state; | |
e142c38c DJ |
18322 | |
18323 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 18324 | |
debd256d JB |
18325 | line_ptr = lh->statement_program_start; |
18326 | line_end = lh->statement_program_end; | |
c906108c | 18327 | |
d9b3de22 DE |
18328 | reader_state.gdbarch = gdbarch; |
18329 | reader_state.line_header = lh; | |
18330 | reader_state.record_lines_p = record_lines_p; | |
18331 | ||
c906108c SS |
18332 | /* Read the statement sequences until there's nothing left. */ |
18333 | while (line_ptr < line_end) | |
18334 | { | |
d9b3de22 DE |
18335 | /* The DWARF line number program state machine. */ |
18336 | lnp_state_machine state_machine; | |
c906108c | 18337 | int end_sequence = 0; |
d9b3de22 DE |
18338 | |
18339 | /* Reset the state machine at the start of each sequence. */ | |
18340 | init_lnp_state_machine (&state_machine, &reader_state); | |
18341 | ||
18342 | if (record_lines_p && lh->num_file_names >= state_machine.file) | |
c906108c | 18343 | { |
aaa75496 | 18344 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
18345 | /* lh->include_dirs and lh->file_names are 0-based, but the |
18346 | directory and file name numbers in the statement program | |
18347 | are 1-based. */ | |
d9b3de22 | 18348 | struct file_entry *fe = &lh->file_names[state_machine.file - 1]; |
d521ce57 | 18349 | const char *dir = NULL; |
a738430d | 18350 | |
afa6c9ab | 18351 | if (fe->dir_index && lh->include_dirs != NULL) |
debd256d | 18352 | dir = lh->include_dirs[fe->dir_index - 1]; |
4f1520fb | 18353 | |
4d663531 | 18354 | dwarf2_start_subfile (fe->name, dir); |
c906108c SS |
18355 | } |
18356 | ||
a738430d | 18357 | /* Decode the table. */ |
d9b3de22 | 18358 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
18359 | { |
18360 | op_code = read_1_byte (abfd, line_ptr); | |
18361 | line_ptr += 1; | |
9aa1fe7e | 18362 | |
debd256d | 18363 | if (op_code >= lh->opcode_base) |
6e70227d | 18364 | { |
8e07a239 | 18365 | /* Special opcode. */ |
699ca60a | 18366 | unsigned char adj_opcode; |
3e29f34a | 18367 | CORE_ADDR addr_adj; |
a05a36a5 | 18368 | int line_delta; |
8e07a239 | 18369 | |
debd256d | 18370 | adj_opcode = op_code - lh->opcode_base; |
d9b3de22 DE |
18371 | addr_adj = (((state_machine.op_index |
18372 | + (adj_opcode / lh->line_range)) | |
2dc7f7b3 TT |
18373 | / lh->maximum_ops_per_instruction) |
18374 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
18375 | state_machine.address |
18376 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
18377 | state_machine.op_index = ((state_machine.op_index | |
18378 | + (adj_opcode / lh->line_range)) | |
18379 | % lh->maximum_ops_per_instruction); | |
a05a36a5 | 18380 | line_delta = lh->line_base + (adj_opcode % lh->line_range); |
d9b3de22 | 18381 | state_machine.line += line_delta; |
a05a36a5 | 18382 | if (line_delta != 0) |
d9b3de22 DE |
18383 | state_machine.line_has_non_zero_discriminator |
18384 | = state_machine.discriminator != 0; | |
18385 | ||
18386 | dwarf_record_line (&reader_state, &state_machine, 0); | |
18387 | state_machine.discriminator = 0; | |
9aa1fe7e GK |
18388 | } |
18389 | else switch (op_code) | |
c906108c SS |
18390 | { |
18391 | case DW_LNS_extended_op: | |
3e43a32a MS |
18392 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
18393 | &bytes_read); | |
473b7be6 | 18394 | line_ptr += bytes_read; |
a8c50c1f | 18395 | extended_end = line_ptr + extended_len; |
c906108c SS |
18396 | extended_op = read_1_byte (abfd, line_ptr); |
18397 | line_ptr += 1; | |
18398 | switch (extended_op) | |
18399 | { | |
18400 | case DW_LNE_end_sequence: | |
d9b3de22 | 18401 | state_machine.record_line = record_line; |
c906108c | 18402 | end_sequence = 1; |
c906108c SS |
18403 | break; |
18404 | case DW_LNE_set_address: | |
d9b3de22 DE |
18405 | { |
18406 | CORE_ADDR address | |
18407 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
18408 | ||
18409 | line_ptr += bytes_read; | |
18410 | check_line_address (cu, &state_machine, line_ptr, | |
18411 | lowpc, address); | |
18412 | state_machine.op_index = 0; | |
18413 | address += baseaddr; | |
18414 | state_machine.address | |
18415 | = gdbarch_adjust_dwarf2_line (gdbarch, address, 0); | |
18416 | } | |
c906108c SS |
18417 | break; |
18418 | case DW_LNE_define_file: | |
debd256d | 18419 | { |
d521ce57 | 18420 | const char *cur_file; |
debd256d | 18421 | unsigned int dir_index, mod_time, length; |
6e70227d | 18422 | |
3e43a32a MS |
18423 | cur_file = read_direct_string (abfd, line_ptr, |
18424 | &bytes_read); | |
debd256d JB |
18425 | line_ptr += bytes_read; |
18426 | dir_index = | |
18427 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18428 | line_ptr += bytes_read; | |
18429 | mod_time = | |
18430 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18431 | line_ptr += bytes_read; | |
18432 | length = | |
18433 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18434 | line_ptr += bytes_read; | |
18435 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
18436 | } | |
c906108c | 18437 | break; |
d0c6ba3d CC |
18438 | case DW_LNE_set_discriminator: |
18439 | /* The discriminator is not interesting to the debugger; | |
a05a36a5 DE |
18440 | just ignore it. We still need to check its value though: |
18441 | if there are consecutive entries for the same | |
18442 | (non-prologue) line we want to coalesce them. | |
18443 | PR 17276. */ | |
d9b3de22 DE |
18444 | state_machine.discriminator |
18445 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18446 | state_machine.line_has_non_zero_discriminator | |
18447 | |= state_machine.discriminator != 0; | |
a05a36a5 | 18448 | line_ptr += bytes_read; |
d0c6ba3d | 18449 | break; |
c906108c | 18450 | default: |
4d3c2250 | 18451 | complaint (&symfile_complaints, |
e2e0b3e5 | 18452 | _("mangled .debug_line section")); |
debd256d | 18453 | return; |
c906108c | 18454 | } |
a8c50c1f DJ |
18455 | /* Make sure that we parsed the extended op correctly. If e.g. |
18456 | we expected a different address size than the producer used, | |
18457 | we may have read the wrong number of bytes. */ | |
18458 | if (line_ptr != extended_end) | |
18459 | { | |
18460 | complaint (&symfile_complaints, | |
18461 | _("mangled .debug_line section")); | |
18462 | return; | |
18463 | } | |
c906108c SS |
18464 | break; |
18465 | case DW_LNS_copy: | |
d9b3de22 DE |
18466 | dwarf_record_line (&reader_state, &state_machine, 0); |
18467 | state_machine.discriminator = 0; | |
c906108c SS |
18468 | break; |
18469 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
18470 | { |
18471 | CORE_ADDR adjust | |
18472 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
3e29f34a | 18473 | CORE_ADDR addr_adj; |
2dc7f7b3 | 18474 | |
d9b3de22 | 18475 | addr_adj = (((state_machine.op_index + adjust) |
2dc7f7b3 TT |
18476 | / lh->maximum_ops_per_instruction) |
18477 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
18478 | state_machine.address |
18479 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
18480 | state_machine.op_index = ((state_machine.op_index + adjust) | |
18481 | % lh->maximum_ops_per_instruction); | |
2dc7f7b3 TT |
18482 | line_ptr += bytes_read; |
18483 | } | |
c906108c SS |
18484 | break; |
18485 | case DW_LNS_advance_line: | |
a05a36a5 DE |
18486 | { |
18487 | int line_delta | |
18488 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
18489 | ||
d9b3de22 | 18490 | state_machine.line += line_delta; |
a05a36a5 | 18491 | if (line_delta != 0) |
d9b3de22 DE |
18492 | state_machine.line_has_non_zero_discriminator |
18493 | = state_machine.discriminator != 0; | |
a05a36a5 DE |
18494 | line_ptr += bytes_read; |
18495 | } | |
c906108c SS |
18496 | break; |
18497 | case DW_LNS_set_file: | |
d9b3de22 DE |
18498 | { |
18499 | /* The arrays lh->include_dirs and lh->file_names are | |
18500 | 0-based, but the directory and file name numbers in | |
18501 | the statement program are 1-based. */ | |
18502 | struct file_entry *fe; | |
18503 | const char *dir = NULL; | |
18504 | ||
18505 | state_machine.file = read_unsigned_leb128 (abfd, line_ptr, | |
18506 | &bytes_read); | |
18507 | line_ptr += bytes_read; | |
18508 | if (state_machine.file == 0 | |
18509 | || state_machine.file - 1 >= lh->num_file_names) | |
18510 | dwarf2_debug_line_missing_file_complaint (); | |
18511 | else | |
18512 | { | |
18513 | fe = &lh->file_names[state_machine.file - 1]; | |
18514 | if (fe->dir_index && lh->include_dirs != NULL) | |
18515 | dir = lh->include_dirs[fe->dir_index - 1]; | |
18516 | if (record_lines_p) | |
18517 | { | |
18518 | state_machine.last_subfile = current_subfile; | |
18519 | state_machine.line_has_non_zero_discriminator | |
18520 | = state_machine.discriminator != 0; | |
18521 | dwarf2_start_subfile (fe->name, dir); | |
18522 | } | |
18523 | } | |
18524 | } | |
c906108c SS |
18525 | break; |
18526 | case DW_LNS_set_column: | |
0ad93d4f | 18527 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
18528 | line_ptr += bytes_read; |
18529 | break; | |
18530 | case DW_LNS_negate_stmt: | |
d9b3de22 | 18531 | state_machine.is_stmt = (!state_machine.is_stmt); |
c906108c SS |
18532 | break; |
18533 | case DW_LNS_set_basic_block: | |
c906108c | 18534 | break; |
c2c6d25f JM |
18535 | /* Add to the address register of the state machine the |
18536 | address increment value corresponding to special opcode | |
a738430d MK |
18537 | 255. I.e., this value is scaled by the minimum |
18538 | instruction length since special opcode 255 would have | |
b021a221 | 18539 | scaled the increment. */ |
c906108c | 18540 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
18541 | { |
18542 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
3e29f34a | 18543 | CORE_ADDR addr_adj; |
2dc7f7b3 | 18544 | |
d9b3de22 | 18545 | addr_adj = (((state_machine.op_index + adjust) |
2dc7f7b3 TT |
18546 | / lh->maximum_ops_per_instruction) |
18547 | * lh->minimum_instruction_length); | |
d9b3de22 DE |
18548 | state_machine.address |
18549 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
18550 | state_machine.op_index = ((state_machine.op_index + adjust) | |
18551 | % lh->maximum_ops_per_instruction); | |
2dc7f7b3 | 18552 | } |
c906108c SS |
18553 | break; |
18554 | case DW_LNS_fixed_advance_pc: | |
3e29f34a MR |
18555 | { |
18556 | CORE_ADDR addr_adj; | |
18557 | ||
18558 | addr_adj = read_2_bytes (abfd, line_ptr); | |
d9b3de22 DE |
18559 | state_machine.address |
18560 | += gdbarch_adjust_dwarf2_line (gdbarch, addr_adj, 1); | |
18561 | state_machine.op_index = 0; | |
3e29f34a MR |
18562 | line_ptr += 2; |
18563 | } | |
c906108c | 18564 | break; |
9aa1fe7e | 18565 | default: |
a738430d MK |
18566 | { |
18567 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 18568 | int i; |
a738430d | 18569 | |
debd256d | 18570 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
18571 | { |
18572 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18573 | line_ptr += bytes_read; | |
18574 | } | |
18575 | } | |
c906108c SS |
18576 | } |
18577 | } | |
d9b3de22 DE |
18578 | |
18579 | if (!end_sequence) | |
18580 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
18581 | ||
18582 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
18583 | in which case we still finish recording the last line). */ | |
18584 | dwarf_record_line (&reader_state, &state_machine, 1); | |
c906108c | 18585 | } |
f3f5162e DE |
18586 | } |
18587 | ||
18588 | /* Decode the Line Number Program (LNP) for the given line_header | |
18589 | structure and CU. The actual information extracted and the type | |
18590 | of structures created from the LNP depends on the value of PST. | |
18591 | ||
18592 | 1. If PST is NULL, then this procedure uses the data from the program | |
18593 | to create all necessary symbol tables, and their linetables. | |
18594 | ||
18595 | 2. If PST is not NULL, this procedure reads the program to determine | |
18596 | the list of files included by the unit represented by PST, and | |
18597 | builds all the associated partial symbol tables. | |
18598 | ||
18599 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
18600 | It is used for relative paths in the line table. | |
18601 | NOTE: When processing partial symtabs (pst != NULL), | |
18602 | comp_dir == pst->dirname. | |
18603 | ||
18604 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
18605 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
18606 | symtab we don't use it in the name of the psymtabs we create. | |
18607 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
18608 | A good testcase for this is mb-inline.exp. |
18609 | ||
527f3840 JK |
18610 | LOWPC is the lowest address in CU (or 0 if not known). |
18611 | ||
18612 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
18613 | for its PC<->lines mapping information. Otherwise only the filename | |
18614 | table is read in. */ | |
f3f5162e DE |
18615 | |
18616 | static void | |
18617 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 18618 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 18619 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e DE |
18620 | { |
18621 | struct objfile *objfile = cu->objfile; | |
18622 | const int decode_for_pst_p = (pst != NULL); | |
f3f5162e | 18623 | |
527f3840 JK |
18624 | if (decode_mapping) |
18625 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
18626 | |
18627 | if (decode_for_pst_p) | |
18628 | { | |
18629 | int file_index; | |
18630 | ||
18631 | /* Now that we're done scanning the Line Header Program, we can | |
18632 | create the psymtab of each included file. */ | |
18633 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
18634 | if (lh->file_names[file_index].included_p == 1) | |
18635 | { | |
d521ce57 | 18636 | const char *include_name = |
c6da4cef DE |
18637 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
18638 | if (include_name != NULL) | |
aaa75496 JB |
18639 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
18640 | } | |
18641 | } | |
cb1df416 DJ |
18642 | else |
18643 | { | |
18644 | /* Make sure a symtab is created for every file, even files | |
18645 | which contain only variables (i.e. no code with associated | |
18646 | line numbers). */ | |
43f3e411 | 18647 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 18648 | int i; |
cb1df416 DJ |
18649 | |
18650 | for (i = 0; i < lh->num_file_names; i++) | |
18651 | { | |
d521ce57 | 18652 | const char *dir = NULL; |
f3f5162e | 18653 | struct file_entry *fe; |
9a619af0 | 18654 | |
cb1df416 | 18655 | fe = &lh->file_names[i]; |
afa6c9ab | 18656 | if (fe->dir_index && lh->include_dirs != NULL) |
cb1df416 | 18657 | dir = lh->include_dirs[fe->dir_index - 1]; |
4d663531 | 18658 | dwarf2_start_subfile (fe->name, dir); |
cb1df416 | 18659 | |
cb1df416 | 18660 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
18661 | { |
18662 | current_subfile->symtab | |
18663 | = allocate_symtab (cust, current_subfile->name); | |
18664 | } | |
cb1df416 DJ |
18665 | fe->symtab = current_subfile->symtab; |
18666 | } | |
18667 | } | |
c906108c SS |
18668 | } |
18669 | ||
18670 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
18671 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 18672 | or NULL if not known. |
c906108c SS |
18673 | This routine tries to keep line numbers from identical absolute and |
18674 | relative file names in a common subfile. | |
18675 | ||
18676 | Using the `list' example from the GDB testsuite, which resides in | |
18677 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
18678 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
18679 | ||
c5aa993b | 18680 | DW_AT_name: /srcdir/list0.c |
4d663531 | 18681 | DW_AT_comp_dir: /compdir |
357e46e7 | 18682 | files.files[0].name: list0.h |
c5aa993b | 18683 | files.files[0].dir: /srcdir |
357e46e7 | 18684 | files.files[1].name: list0.c |
c5aa993b | 18685 | files.files[1].dir: /srcdir |
c906108c SS |
18686 | |
18687 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
18688 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
18689 | start_subfile will ensure that this happens provided that we pass the | |
18690 | concatenation of files.files[1].dir and files.files[1].name as the | |
18691 | subfile's name. */ | |
c906108c SS |
18692 | |
18693 | static void | |
4d663531 | 18694 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 18695 | { |
d521ce57 | 18696 | char *copy = NULL; |
4f1520fb | 18697 | |
4d663531 | 18698 | /* In order not to lose the line information directory, |
4f1520fb FR |
18699 | we concatenate it to the filename when it makes sense. |
18700 | Note that the Dwarf3 standard says (speaking of filenames in line | |
18701 | information): ``The directory index is ignored for file names | |
18702 | that represent full path names''. Thus ignoring dirname in the | |
18703 | `else' branch below isn't an issue. */ | |
c906108c | 18704 | |
d5166ae1 | 18705 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
18706 | { |
18707 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
18708 | filename = copy; | |
18709 | } | |
c906108c | 18710 | |
4d663531 | 18711 | start_subfile (filename); |
4f1520fb | 18712 | |
d521ce57 TT |
18713 | if (copy != NULL) |
18714 | xfree (copy); | |
c906108c SS |
18715 | } |
18716 | ||
f4dc4d17 DE |
18717 | /* Start a symtab for DWARF. |
18718 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
18719 | ||
43f3e411 | 18720 | static struct compunit_symtab * |
f4dc4d17 | 18721 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 18722 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 18723 | { |
43f3e411 DE |
18724 | struct compunit_symtab *cust |
18725 | = start_symtab (cu->objfile, name, comp_dir, low_pc); | |
18726 | ||
f4dc4d17 DE |
18727 | record_debugformat ("DWARF 2"); |
18728 | record_producer (cu->producer); | |
18729 | ||
18730 | /* We assume that we're processing GCC output. */ | |
18731 | processing_gcc_compilation = 2; | |
18732 | ||
4d4ec4e5 | 18733 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
18734 | |
18735 | return cust; | |
f4dc4d17 DE |
18736 | } |
18737 | ||
4c2df51b DJ |
18738 | static void |
18739 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 18740 | struct dwarf2_cu *cu) |
4c2df51b | 18741 | { |
e7c27a73 DJ |
18742 | struct objfile *objfile = cu->objfile; |
18743 | struct comp_unit_head *cu_header = &cu->header; | |
18744 | ||
4c2df51b DJ |
18745 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
18746 | code here to turn a symbol with DW_AT_external and a | |
18747 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
18748 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
18749 | with some versions of binutils) where shared libraries could have | |
18750 | relocations against symbols in their debug information - the | |
18751 | minimal symbol would have the right address, but the debug info | |
18752 | would not. It's no longer necessary, because we will explicitly | |
18753 | apply relocations when we read in the debug information now. */ | |
18754 | ||
18755 | /* A DW_AT_location attribute with no contents indicates that a | |
18756 | variable has been optimized away. */ | |
18757 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
18758 | { | |
f1e6e072 | 18759 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
18760 | return; |
18761 | } | |
18762 | ||
18763 | /* Handle one degenerate form of location expression specially, to | |
18764 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
18765 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
18766 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
18767 | |
18768 | if (attr_form_is_block (attr) | |
3019eac3 DE |
18769 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
18770 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
18771 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
18772 | && (DW_BLOCK (attr)->size | |
18773 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 18774 | { |
891d2f0b | 18775 | unsigned int dummy; |
4c2df51b | 18776 | |
3019eac3 DE |
18777 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
18778 | SYMBOL_VALUE_ADDRESS (sym) = | |
18779 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
18780 | else | |
18781 | SYMBOL_VALUE_ADDRESS (sym) = | |
18782 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 18783 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
18784 | fixup_symbol_section (sym, objfile); |
18785 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
18786 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
18787 | return; |
18788 | } | |
18789 | ||
18790 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
18791 | expression evaluator, and use LOC_COMPUTED only when necessary | |
18792 | (i.e. when the value of a register or memory location is | |
18793 | referenced, or a thread-local block, etc.). Then again, it might | |
18794 | not be worthwhile. I'm assuming that it isn't unless performance | |
18795 | or memory numbers show me otherwise. */ | |
18796 | ||
f1e6e072 | 18797 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 18798 | |
f1e6e072 | 18799 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 18800 | cu->has_loclist = 1; |
4c2df51b DJ |
18801 | } |
18802 | ||
c906108c SS |
18803 | /* Given a pointer to a DWARF information entry, figure out if we need |
18804 | to make a symbol table entry for it, and if so, create a new entry | |
18805 | and return a pointer to it. | |
18806 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
18807 | used the passed type. |
18808 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
18809 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
18810 | |
18811 | static struct symbol * | |
34eaf542 TT |
18812 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
18813 | struct symbol *space) | |
c906108c | 18814 | { |
e7c27a73 | 18815 | struct objfile *objfile = cu->objfile; |
3e29f34a | 18816 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 18817 | struct symbol *sym = NULL; |
15d034d0 | 18818 | const char *name; |
c906108c SS |
18819 | struct attribute *attr = NULL; |
18820 | struct attribute *attr2 = NULL; | |
e142c38c | 18821 | CORE_ADDR baseaddr; |
e37fd15a SW |
18822 | struct pending **list_to_add = NULL; |
18823 | ||
edb3359d | 18824 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
18825 | |
18826 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 18827 | |
94af9270 | 18828 | name = dwarf2_name (die, cu); |
c906108c SS |
18829 | if (name) |
18830 | { | |
94af9270 | 18831 | const char *linkagename; |
34eaf542 | 18832 | int suppress_add = 0; |
94af9270 | 18833 | |
34eaf542 TT |
18834 | if (space) |
18835 | sym = space; | |
18836 | else | |
e623cf5d | 18837 | sym = allocate_symbol (objfile); |
c906108c | 18838 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
18839 | |
18840 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 18841 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
18842 | linkagename = dwarf2_physname (name, die, cu); |
18843 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 18844 | |
f55ee35c JK |
18845 | /* Fortran does not have mangling standard and the mangling does differ |
18846 | between gfortran, iFort etc. */ | |
18847 | if (cu->language == language_fortran | |
b250c185 | 18848 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 18849 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 18850 | dwarf2_full_name (name, die, cu), |
29df156d | 18851 | NULL); |
f55ee35c | 18852 | |
c906108c | 18853 | /* Default assumptions. |
c5aa993b | 18854 | Use the passed type or decode it from the die. */ |
176620f1 | 18855 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 18856 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
18857 | if (type != NULL) |
18858 | SYMBOL_TYPE (sym) = type; | |
18859 | else | |
e7c27a73 | 18860 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
18861 | attr = dwarf2_attr (die, |
18862 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
18863 | cu); | |
c906108c SS |
18864 | if (attr) |
18865 | { | |
18866 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
18867 | } | |
cb1df416 | 18868 | |
edb3359d DJ |
18869 | attr = dwarf2_attr (die, |
18870 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
18871 | cu); | |
cb1df416 DJ |
18872 | if (attr) |
18873 | { | |
18874 | int file_index = DW_UNSND (attr); | |
9a619af0 | 18875 | |
cb1df416 DJ |
18876 | if (cu->line_header == NULL |
18877 | || file_index > cu->line_header->num_file_names) | |
18878 | complaint (&symfile_complaints, | |
18879 | _("file index out of range")); | |
1c3d648d | 18880 | else if (file_index > 0) |
cb1df416 DJ |
18881 | { |
18882 | struct file_entry *fe; | |
9a619af0 | 18883 | |
cb1df416 | 18884 | fe = &cu->line_header->file_names[file_index - 1]; |
08be3fe3 | 18885 | symbol_set_symtab (sym, fe->symtab); |
cb1df416 DJ |
18886 | } |
18887 | } | |
18888 | ||
c906108c SS |
18889 | switch (die->tag) |
18890 | { | |
18891 | case DW_TAG_label: | |
e142c38c | 18892 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 18893 | if (attr) |
3e29f34a MR |
18894 | { |
18895 | CORE_ADDR addr; | |
18896 | ||
18897 | addr = attr_value_as_address (attr); | |
18898 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
18899 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
18900 | } | |
0f5238ed TT |
18901 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
18902 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 18903 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 18904 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
18905 | break; |
18906 | case DW_TAG_subprogram: | |
18907 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18908 | finish_block. */ | |
f1e6e072 | 18909 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 18910 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
18911 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
18912 | || cu->language == language_ada) | |
c906108c | 18913 | { |
2cfa0c8d JB |
18914 | /* Subprograms marked external are stored as a global symbol. |
18915 | Ada subprograms, whether marked external or not, are always | |
18916 | stored as a global symbol, because we want to be able to | |
18917 | access them globally. For instance, we want to be able | |
18918 | to break on a nested subprogram without having to | |
18919 | specify the context. */ | |
e37fd15a | 18920 | list_to_add = &global_symbols; |
c906108c SS |
18921 | } |
18922 | else | |
18923 | { | |
e37fd15a | 18924 | list_to_add = cu->list_in_scope; |
c906108c SS |
18925 | } |
18926 | break; | |
edb3359d DJ |
18927 | case DW_TAG_inlined_subroutine: |
18928 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18929 | finish_block. */ | |
f1e6e072 | 18930 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 18931 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 18932 | list_to_add = cu->list_in_scope; |
edb3359d | 18933 | break; |
34eaf542 TT |
18934 | case DW_TAG_template_value_param: |
18935 | suppress_add = 1; | |
18936 | /* Fall through. */ | |
72929c62 | 18937 | case DW_TAG_constant: |
c906108c | 18938 | case DW_TAG_variable: |
254e6b9e | 18939 | case DW_TAG_member: |
0963b4bd MS |
18940 | /* Compilation with minimal debug info may result in |
18941 | variables with missing type entries. Change the | |
18942 | misleading `void' type to something sensible. */ | |
c906108c | 18943 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 18944 | SYMBOL_TYPE (sym) |
46bf5051 | 18945 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 18946 | |
e142c38c | 18947 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
18948 | /* In the case of DW_TAG_member, we should only be called for |
18949 | static const members. */ | |
18950 | if (die->tag == DW_TAG_member) | |
18951 | { | |
3863f96c DE |
18952 | /* dwarf2_add_field uses die_is_declaration, |
18953 | so we do the same. */ | |
254e6b9e DE |
18954 | gdb_assert (die_is_declaration (die, cu)); |
18955 | gdb_assert (attr); | |
18956 | } | |
c906108c SS |
18957 | if (attr) |
18958 | { | |
e7c27a73 | 18959 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 18960 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 18961 | if (!suppress_add) |
34eaf542 TT |
18962 | { |
18963 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 18964 | list_to_add = &global_symbols; |
34eaf542 | 18965 | else |
e37fd15a | 18966 | list_to_add = cu->list_in_scope; |
34eaf542 | 18967 | } |
c906108c SS |
18968 | break; |
18969 | } | |
e142c38c | 18970 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
18971 | if (attr) |
18972 | { | |
e7c27a73 | 18973 | var_decode_location (attr, sym, cu); |
e142c38c | 18974 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
18975 | |
18976 | /* Fortran explicitly imports any global symbols to the local | |
18977 | scope by DW_TAG_common_block. */ | |
18978 | if (cu->language == language_fortran && die->parent | |
18979 | && die->parent->tag == DW_TAG_common_block) | |
18980 | attr2 = NULL; | |
18981 | ||
caac4577 JG |
18982 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
18983 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
18984 | && !dwarf2_per_objfile->has_section_at_zero) | |
18985 | { | |
18986 | /* When a static variable is eliminated by the linker, | |
18987 | the corresponding debug information is not stripped | |
18988 | out, but the variable address is set to null; | |
18989 | do not add such variables into symbol table. */ | |
18990 | } | |
18991 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 18992 | { |
f55ee35c JK |
18993 | /* Workaround gfortran PR debug/40040 - it uses |
18994 | DW_AT_location for variables in -fPIC libraries which may | |
18995 | get overriden by other libraries/executable and get | |
18996 | a different address. Resolve it by the minimal symbol | |
18997 | which may come from inferior's executable using copy | |
18998 | relocation. Make this workaround only for gfortran as for | |
18999 | other compilers GDB cannot guess the minimal symbol | |
19000 | Fortran mangling kind. */ | |
19001 | if (cu->language == language_fortran && die->parent | |
19002 | && die->parent->tag == DW_TAG_module | |
19003 | && cu->producer | |
28586665 | 19004 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 19005 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 19006 | |
1c809c68 TT |
19007 | /* A variable with DW_AT_external is never static, |
19008 | but it may be block-scoped. */ | |
19009 | list_to_add = (cu->list_in_scope == &file_symbols | |
19010 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 19011 | } |
c906108c | 19012 | else |
e37fd15a | 19013 | list_to_add = cu->list_in_scope; |
c906108c SS |
19014 | } |
19015 | else | |
19016 | { | |
19017 | /* We do not know the address of this symbol. | |
c5aa993b JM |
19018 | If it is an external symbol and we have type information |
19019 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
19020 | The address of the variable will then be determined from | |
19021 | the minimal symbol table whenever the variable is | |
19022 | referenced. */ | |
e142c38c | 19023 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
19024 | |
19025 | /* Fortran explicitly imports any global symbols to the local | |
19026 | scope by DW_TAG_common_block. */ | |
19027 | if (cu->language == language_fortran && die->parent | |
19028 | && die->parent->tag == DW_TAG_common_block) | |
19029 | { | |
19030 | /* SYMBOL_CLASS doesn't matter here because | |
19031 | read_common_block is going to reset it. */ | |
19032 | if (!suppress_add) | |
19033 | list_to_add = cu->list_in_scope; | |
19034 | } | |
19035 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
19036 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 19037 | { |
0fe7935b DJ |
19038 | /* A variable with DW_AT_external is never static, but it |
19039 | may be block-scoped. */ | |
19040 | list_to_add = (cu->list_in_scope == &file_symbols | |
19041 | ? &global_symbols : cu->list_in_scope); | |
19042 | ||
f1e6e072 | 19043 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 19044 | } |
442ddf59 JK |
19045 | else if (!die_is_declaration (die, cu)) |
19046 | { | |
19047 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
19048 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
19049 | if (!suppress_add) |
19050 | list_to_add = cu->list_in_scope; | |
442ddf59 | 19051 | } |
c906108c SS |
19052 | } |
19053 | break; | |
19054 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
19055 | /* If we are inside a function, mark this as an argument. If |
19056 | not, we might be looking at an argument to an inlined function | |
19057 | when we do not have enough information to show inlined frames; | |
19058 | pretend it's a local variable in that case so that the user can | |
19059 | still see it. */ | |
19060 | if (context_stack_depth > 0 | |
19061 | && context_stack[context_stack_depth - 1].name != NULL) | |
19062 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 19063 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
19064 | if (attr) |
19065 | { | |
e7c27a73 | 19066 | var_decode_location (attr, sym, cu); |
c906108c | 19067 | } |
e142c38c | 19068 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
19069 | if (attr) |
19070 | { | |
e7c27a73 | 19071 | dwarf2_const_value (attr, sym, cu); |
c906108c | 19072 | } |
f346a30d | 19073 | |
e37fd15a | 19074 | list_to_add = cu->list_in_scope; |
c906108c SS |
19075 | break; |
19076 | case DW_TAG_unspecified_parameters: | |
19077 | /* From varargs functions; gdb doesn't seem to have any | |
19078 | interest in this information, so just ignore it for now. | |
19079 | (FIXME?) */ | |
19080 | break; | |
34eaf542 TT |
19081 | case DW_TAG_template_type_param: |
19082 | suppress_add = 1; | |
19083 | /* Fall through. */ | |
c906108c | 19084 | case DW_TAG_class_type: |
680b30c7 | 19085 | case DW_TAG_interface_type: |
c906108c SS |
19086 | case DW_TAG_structure_type: |
19087 | case DW_TAG_union_type: | |
72019c9c | 19088 | case DW_TAG_set_type: |
c906108c | 19089 | case DW_TAG_enumeration_type: |
f1e6e072 | 19090 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 19091 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 19092 | |
63d06c5c | 19093 | { |
9c37b5ae | 19094 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
19095 | really ever be static objects: otherwise, if you try |
19096 | to, say, break of a class's method and you're in a file | |
19097 | which doesn't mention that class, it won't work unless | |
19098 | the check for all static symbols in lookup_symbol_aux | |
19099 | saves you. See the OtherFileClass tests in | |
19100 | gdb.c++/namespace.exp. */ | |
19101 | ||
e37fd15a | 19102 | if (!suppress_add) |
34eaf542 | 19103 | { |
34eaf542 | 19104 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 19105 | && cu->language == language_cplus |
34eaf542 | 19106 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 19107 | |
64382290 | 19108 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 19109 | ... }" also defines a typedef for "foo". */ |
64382290 | 19110 | if (cu->language == language_cplus |
45280282 | 19111 | || cu->language == language_ada |
c44af4eb TT |
19112 | || cu->language == language_d |
19113 | || cu->language == language_rust) | |
64382290 TT |
19114 | { |
19115 | /* The symbol's name is already allocated along | |
19116 | with this objfile, so we don't need to | |
19117 | duplicate it for the type. */ | |
19118 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
19119 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
19120 | } | |
63d06c5c DC |
19121 | } |
19122 | } | |
c906108c SS |
19123 | break; |
19124 | case DW_TAG_typedef: | |
f1e6e072 | 19125 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 19126 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 19127 | list_to_add = cu->list_in_scope; |
63d06c5c | 19128 | break; |
c906108c | 19129 | case DW_TAG_base_type: |
a02abb62 | 19130 | case DW_TAG_subrange_type: |
f1e6e072 | 19131 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 19132 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 19133 | list_to_add = cu->list_in_scope; |
c906108c SS |
19134 | break; |
19135 | case DW_TAG_enumerator: | |
e142c38c | 19136 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
19137 | if (attr) |
19138 | { | |
e7c27a73 | 19139 | dwarf2_const_value (attr, sym, cu); |
c906108c | 19140 | } |
63d06c5c DC |
19141 | { |
19142 | /* NOTE: carlton/2003-11-10: See comment above in the | |
19143 | DW_TAG_class_type, etc. block. */ | |
19144 | ||
e142c38c | 19145 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 19146 | && cu->language == language_cplus |
e142c38c | 19147 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 19148 | } |
c906108c | 19149 | break; |
74921315 | 19150 | case DW_TAG_imported_declaration: |
5c4e30ca | 19151 | case DW_TAG_namespace: |
f1e6e072 | 19152 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 19153 | list_to_add = &global_symbols; |
5c4e30ca | 19154 | break; |
530e8392 KB |
19155 | case DW_TAG_module: |
19156 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
19157 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
19158 | list_to_add = &global_symbols; | |
19159 | break; | |
4357ac6c | 19160 | case DW_TAG_common_block: |
f1e6e072 | 19161 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
19162 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
19163 | add_symbol_to_list (sym, cu->list_in_scope); | |
19164 | break; | |
c906108c SS |
19165 | default: |
19166 | /* Not a tag we recognize. Hopefully we aren't processing | |
19167 | trash data, but since we must specifically ignore things | |
19168 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 19169 | this point. */ |
e2e0b3e5 | 19170 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 19171 | dwarf_tag_name (die->tag)); |
c906108c SS |
19172 | break; |
19173 | } | |
df8a16a1 | 19174 | |
e37fd15a SW |
19175 | if (suppress_add) |
19176 | { | |
19177 | sym->hash_next = objfile->template_symbols; | |
19178 | objfile->template_symbols = sym; | |
19179 | list_to_add = NULL; | |
19180 | } | |
19181 | ||
19182 | if (list_to_add != NULL) | |
19183 | add_symbol_to_list (sym, list_to_add); | |
19184 | ||
df8a16a1 DJ |
19185 | /* For the benefit of old versions of GCC, check for anonymous |
19186 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 19187 | if (!cu->processing_has_namespace_info |
94af9270 | 19188 | && cu->language == language_cplus) |
a10964d1 | 19189 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
19190 | } |
19191 | return (sym); | |
19192 | } | |
19193 | ||
34eaf542 TT |
19194 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
19195 | ||
19196 | static struct symbol * | |
19197 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
19198 | { | |
19199 | return new_symbol_full (die, type, cu, NULL); | |
19200 | } | |
19201 | ||
98bfdba5 PA |
19202 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
19203 | zero-extend it as appropriate for the symbol's type. The DWARF | |
19204 | standard (v4) is not entirely clear about the meaning of using | |
19205 | DW_FORM_dataN for a constant with a signed type, where the type is | |
19206 | wider than the data. The conclusion of a discussion on the DWARF | |
19207 | list was that this is unspecified. We choose to always zero-extend | |
19208 | because that is the interpretation long in use by GCC. */ | |
c906108c | 19209 | |
98bfdba5 | 19210 | static gdb_byte * |
ff39bb5e | 19211 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 19212 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 19213 | { |
e7c27a73 | 19214 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
19215 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
19216 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
19217 | LONGEST l = DW_UNSND (attr); |
19218 | ||
19219 | if (bits < sizeof (*value) * 8) | |
19220 | { | |
19221 | l &= ((LONGEST) 1 << bits) - 1; | |
19222 | *value = l; | |
19223 | } | |
19224 | else if (bits == sizeof (*value) * 8) | |
19225 | *value = l; | |
19226 | else | |
19227 | { | |
224c3ddb | 19228 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
19229 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
19230 | return bytes; | |
19231 | } | |
19232 | ||
19233 | return NULL; | |
19234 | } | |
19235 | ||
19236 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
19237 | the value does not fit in *VALUE, set *BYTES - either already | |
19238 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
19239 | or, set *BATON, if we translated the constant to a location | |
19240 | expression. */ | |
19241 | ||
19242 | static void | |
ff39bb5e | 19243 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
19244 | const char *name, struct obstack *obstack, |
19245 | struct dwarf2_cu *cu, | |
d521ce57 | 19246 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
19247 | struct dwarf2_locexpr_baton **baton) |
19248 | { | |
19249 | struct objfile *objfile = cu->objfile; | |
19250 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 19251 | struct dwarf_block *blk; |
98bfdba5 PA |
19252 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
19253 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
19254 | ||
19255 | *value = 0; | |
19256 | *bytes = NULL; | |
19257 | *baton = NULL; | |
c906108c SS |
19258 | |
19259 | switch (attr->form) | |
19260 | { | |
19261 | case DW_FORM_addr: | |
3019eac3 | 19262 | case DW_FORM_GNU_addr_index: |
ac56253d | 19263 | { |
ac56253d TT |
19264 | gdb_byte *data; |
19265 | ||
98bfdba5 PA |
19266 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
19267 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 19268 | cu_header->addr_size, |
98bfdba5 | 19269 | TYPE_LENGTH (type)); |
ac56253d TT |
19270 | /* Symbols of this form are reasonably rare, so we just |
19271 | piggyback on the existing location code rather than writing | |
19272 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 19273 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
19274 | (*baton)->per_cu = cu->per_cu; |
19275 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 19276 | |
98bfdba5 | 19277 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 19278 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 19279 | (*baton)->data = data; |
ac56253d TT |
19280 | |
19281 | data[0] = DW_OP_addr; | |
19282 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
19283 | byte_order, DW_ADDR (attr)); | |
19284 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 19285 | } |
c906108c | 19286 | break; |
4ac36638 | 19287 | case DW_FORM_string: |
93b5768b | 19288 | case DW_FORM_strp: |
3019eac3 | 19289 | case DW_FORM_GNU_str_index: |
36586728 | 19290 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
19291 | /* DW_STRING is already allocated on the objfile obstack, point |
19292 | directly to it. */ | |
d521ce57 | 19293 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 19294 | break; |
c906108c SS |
19295 | case DW_FORM_block1: |
19296 | case DW_FORM_block2: | |
19297 | case DW_FORM_block4: | |
19298 | case DW_FORM_block: | |
2dc7f7b3 | 19299 | case DW_FORM_exprloc: |
c906108c | 19300 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
19301 | if (TYPE_LENGTH (type) != blk->size) |
19302 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
19303 | TYPE_LENGTH (type)); | |
19304 | *bytes = blk->data; | |
c906108c | 19305 | break; |
2df3850c JM |
19306 | |
19307 | /* The DW_AT_const_value attributes are supposed to carry the | |
19308 | symbol's value "represented as it would be on the target | |
19309 | architecture." By the time we get here, it's already been | |
19310 | converted to host endianness, so we just need to sign- or | |
19311 | zero-extend it as appropriate. */ | |
19312 | case DW_FORM_data1: | |
3aef2284 | 19313 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 19314 | break; |
c906108c | 19315 | case DW_FORM_data2: |
3aef2284 | 19316 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 19317 | break; |
c906108c | 19318 | case DW_FORM_data4: |
3aef2284 | 19319 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 19320 | break; |
c906108c | 19321 | case DW_FORM_data8: |
3aef2284 | 19322 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
19323 | break; |
19324 | ||
c906108c | 19325 | case DW_FORM_sdata: |
98bfdba5 | 19326 | *value = DW_SND (attr); |
2df3850c JM |
19327 | break; |
19328 | ||
c906108c | 19329 | case DW_FORM_udata: |
98bfdba5 | 19330 | *value = DW_UNSND (attr); |
c906108c | 19331 | break; |
2df3850c | 19332 | |
c906108c | 19333 | default: |
4d3c2250 | 19334 | complaint (&symfile_complaints, |
e2e0b3e5 | 19335 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 19336 | dwarf_form_name (attr->form)); |
98bfdba5 | 19337 | *value = 0; |
c906108c SS |
19338 | break; |
19339 | } | |
19340 | } | |
19341 | ||
2df3850c | 19342 | |
98bfdba5 PA |
19343 | /* Copy constant value from an attribute to a symbol. */ |
19344 | ||
2df3850c | 19345 | static void |
ff39bb5e | 19346 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 19347 | struct dwarf2_cu *cu) |
2df3850c | 19348 | { |
98bfdba5 | 19349 | struct objfile *objfile = cu->objfile; |
12df843f | 19350 | LONGEST value; |
d521ce57 | 19351 | const gdb_byte *bytes; |
98bfdba5 | 19352 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 19353 | |
98bfdba5 PA |
19354 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
19355 | SYMBOL_PRINT_NAME (sym), | |
19356 | &objfile->objfile_obstack, cu, | |
19357 | &value, &bytes, &baton); | |
2df3850c | 19358 | |
98bfdba5 PA |
19359 | if (baton != NULL) |
19360 | { | |
98bfdba5 | 19361 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 19362 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
19363 | } |
19364 | else if (bytes != NULL) | |
19365 | { | |
19366 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 19367 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
19368 | } |
19369 | else | |
19370 | { | |
19371 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 19372 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 19373 | } |
2df3850c JM |
19374 | } |
19375 | ||
c906108c SS |
19376 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
19377 | ||
19378 | static struct type * | |
e7c27a73 | 19379 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19380 | { |
c906108c | 19381 | struct attribute *type_attr; |
c906108c | 19382 | |
e142c38c | 19383 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
19384 | if (!type_attr) |
19385 | { | |
19386 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 19387 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 19388 | } |
348e048f | 19389 | |
673bfd45 | 19390 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
19391 | } |
19392 | ||
b4ba55a1 JB |
19393 | /* True iff CU's producer generates GNAT Ada auxiliary information |
19394 | that allows to find parallel types through that information instead | |
19395 | of having to do expensive parallel lookups by type name. */ | |
19396 | ||
19397 | static int | |
19398 | need_gnat_info (struct dwarf2_cu *cu) | |
19399 | { | |
19400 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
19401 | of GNAT produces this auxiliary information, without any indication | |
19402 | that it is produced. Part of enhancing the FSF version of GNAT | |
19403 | to produce that information will be to put in place an indicator | |
19404 | that we can use in order to determine whether the descriptive type | |
19405 | info is available or not. One suggestion that has been made is | |
19406 | to use a new attribute, attached to the CU die. For now, assume | |
19407 | that the descriptive type info is not available. */ | |
19408 | return 0; | |
19409 | } | |
19410 | ||
b4ba55a1 JB |
19411 | /* Return the auxiliary type of the die in question using its |
19412 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
19413 | attribute is not present. */ | |
19414 | ||
19415 | static struct type * | |
19416 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
19417 | { | |
b4ba55a1 | 19418 | struct attribute *type_attr; |
b4ba55a1 JB |
19419 | |
19420 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
19421 | if (!type_attr) | |
19422 | return NULL; | |
19423 | ||
673bfd45 | 19424 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
19425 | } |
19426 | ||
19427 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
19428 | descriptive type accordingly. */ | |
19429 | ||
19430 | static void | |
19431 | set_descriptive_type (struct type *type, struct die_info *die, | |
19432 | struct dwarf2_cu *cu) | |
19433 | { | |
19434 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
19435 | ||
19436 | if (descriptive_type) | |
19437 | { | |
19438 | ALLOCATE_GNAT_AUX_TYPE (type); | |
19439 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
19440 | } | |
19441 | } | |
19442 | ||
c906108c SS |
19443 | /* Return the containing type of the die in question using its |
19444 | DW_AT_containing_type attribute. */ | |
19445 | ||
19446 | static struct type * | |
e7c27a73 | 19447 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19448 | { |
c906108c | 19449 | struct attribute *type_attr; |
c906108c | 19450 | |
e142c38c | 19451 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
19452 | if (!type_attr) |
19453 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 19454 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 19455 | |
673bfd45 | 19456 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
19457 | } |
19458 | ||
ac9ec31b DE |
19459 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
19460 | ||
19461 | static struct type * | |
19462 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
19463 | { | |
19464 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19465 | char *message, *saved; | |
19466 | ||
19467 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 19468 | objfile_name (objfile), |
ac9ec31b DE |
19469 | cu->header.offset.sect_off, |
19470 | die->offset.sect_off); | |
224c3ddb SM |
19471 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
19472 | message, strlen (message)); | |
ac9ec31b DE |
19473 | xfree (message); |
19474 | ||
19f392bc | 19475 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
19476 | } |
19477 | ||
673bfd45 | 19478 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
19479 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
19480 | DW_AT_containing_type. | |
673bfd45 DE |
19481 | If there is no type substitute an error marker. */ |
19482 | ||
c906108c | 19483 | static struct type * |
ff39bb5e | 19484 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 19485 | struct dwarf2_cu *cu) |
c906108c | 19486 | { |
bb5ed363 | 19487 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
19488 | struct type *this_type; |
19489 | ||
ac9ec31b DE |
19490 | gdb_assert (attr->name == DW_AT_type |
19491 | || attr->name == DW_AT_GNAT_descriptive_type | |
19492 | || attr->name == DW_AT_containing_type); | |
19493 | ||
673bfd45 DE |
19494 | /* First see if we have it cached. */ |
19495 | ||
36586728 TT |
19496 | if (attr->form == DW_FORM_GNU_ref_alt) |
19497 | { | |
19498 | struct dwarf2_per_cu_data *per_cu; | |
19499 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
19500 | ||
19501 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
19502 | this_type = get_die_type_at_offset (offset, per_cu); | |
19503 | } | |
7771576e | 19504 | else if (attr_form_is_ref (attr)) |
673bfd45 | 19505 | { |
b64f50a1 | 19506 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
19507 | |
19508 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
19509 | } | |
55f1336d | 19510 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 19511 | { |
ac9ec31b | 19512 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 19513 | |
ac9ec31b | 19514 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
19515 | } |
19516 | else | |
19517 | { | |
ac9ec31b DE |
19518 | complaint (&symfile_complaints, |
19519 | _("Dwarf Error: Bad type attribute %s in DIE" | |
19520 | " at 0x%x [in module %s]"), | |
19521 | dwarf_attr_name (attr->name), die->offset.sect_off, | |
4262abfb | 19522 | objfile_name (objfile)); |
ac9ec31b | 19523 | return build_error_marker_type (cu, die); |
673bfd45 DE |
19524 | } |
19525 | ||
19526 | /* If not cached we need to read it in. */ | |
19527 | ||
19528 | if (this_type == NULL) | |
19529 | { | |
ac9ec31b | 19530 | struct die_info *type_die = NULL; |
673bfd45 DE |
19531 | struct dwarf2_cu *type_cu = cu; |
19532 | ||
7771576e | 19533 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
19534 | type_die = follow_die_ref (die, attr, &type_cu); |
19535 | if (type_die == NULL) | |
19536 | return build_error_marker_type (cu, die); | |
19537 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
19538 | from an inter-CU reference and the type's CU got expanded before |
19539 | ours. */ | |
ac9ec31b | 19540 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
19541 | } |
19542 | ||
19543 | /* If we still don't have a type use an error marker. */ | |
19544 | ||
19545 | if (this_type == NULL) | |
ac9ec31b | 19546 | return build_error_marker_type (cu, die); |
673bfd45 | 19547 | |
f792889a | 19548 | return this_type; |
c906108c SS |
19549 | } |
19550 | ||
673bfd45 DE |
19551 | /* Return the type in DIE, CU. |
19552 | Returns NULL for invalid types. | |
19553 | ||
02142a6c | 19554 | This first does a lookup in die_type_hash, |
673bfd45 DE |
19555 | and only reads the die in if necessary. |
19556 | ||
19557 | NOTE: This can be called when reading in partial or full symbols. */ | |
19558 | ||
f792889a | 19559 | static struct type * |
e7c27a73 | 19560 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19561 | { |
f792889a DJ |
19562 | struct type *this_type; |
19563 | ||
19564 | this_type = get_die_type (die, cu); | |
19565 | if (this_type) | |
19566 | return this_type; | |
19567 | ||
673bfd45 DE |
19568 | return read_type_die_1 (die, cu); |
19569 | } | |
19570 | ||
19571 | /* Read the type in DIE, CU. | |
19572 | Returns NULL for invalid types. */ | |
19573 | ||
19574 | static struct type * | |
19575 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
19576 | { | |
19577 | struct type *this_type = NULL; | |
19578 | ||
c906108c SS |
19579 | switch (die->tag) |
19580 | { | |
19581 | case DW_TAG_class_type: | |
680b30c7 | 19582 | case DW_TAG_interface_type: |
c906108c SS |
19583 | case DW_TAG_structure_type: |
19584 | case DW_TAG_union_type: | |
f792889a | 19585 | this_type = read_structure_type (die, cu); |
c906108c SS |
19586 | break; |
19587 | case DW_TAG_enumeration_type: | |
f792889a | 19588 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
19589 | break; |
19590 | case DW_TAG_subprogram: | |
19591 | case DW_TAG_subroutine_type: | |
edb3359d | 19592 | case DW_TAG_inlined_subroutine: |
f792889a | 19593 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
19594 | break; |
19595 | case DW_TAG_array_type: | |
f792889a | 19596 | this_type = read_array_type (die, cu); |
c906108c | 19597 | break; |
72019c9c | 19598 | case DW_TAG_set_type: |
f792889a | 19599 | this_type = read_set_type (die, cu); |
72019c9c | 19600 | break; |
c906108c | 19601 | case DW_TAG_pointer_type: |
f792889a | 19602 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
19603 | break; |
19604 | case DW_TAG_ptr_to_member_type: | |
f792889a | 19605 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
19606 | break; |
19607 | case DW_TAG_reference_type: | |
f792889a | 19608 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
19609 | break; |
19610 | case DW_TAG_const_type: | |
f792889a | 19611 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
19612 | break; |
19613 | case DW_TAG_volatile_type: | |
f792889a | 19614 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 19615 | break; |
06d66ee9 TT |
19616 | case DW_TAG_restrict_type: |
19617 | this_type = read_tag_restrict_type (die, cu); | |
19618 | break; | |
c906108c | 19619 | case DW_TAG_string_type: |
f792889a | 19620 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
19621 | break; |
19622 | case DW_TAG_typedef: | |
f792889a | 19623 | this_type = read_typedef (die, cu); |
c906108c | 19624 | break; |
a02abb62 | 19625 | case DW_TAG_subrange_type: |
f792889a | 19626 | this_type = read_subrange_type (die, cu); |
a02abb62 | 19627 | break; |
c906108c | 19628 | case DW_TAG_base_type: |
f792889a | 19629 | this_type = read_base_type (die, cu); |
c906108c | 19630 | break; |
81a17f79 | 19631 | case DW_TAG_unspecified_type: |
f792889a | 19632 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 19633 | break; |
0114d602 DJ |
19634 | case DW_TAG_namespace: |
19635 | this_type = read_namespace_type (die, cu); | |
19636 | break; | |
f55ee35c JK |
19637 | case DW_TAG_module: |
19638 | this_type = read_module_type (die, cu); | |
19639 | break; | |
a2c2acaf MW |
19640 | case DW_TAG_atomic_type: |
19641 | this_type = read_tag_atomic_type (die, cu); | |
19642 | break; | |
c906108c | 19643 | default: |
3e43a32a MS |
19644 | complaint (&symfile_complaints, |
19645 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 19646 | dwarf_tag_name (die->tag)); |
c906108c SS |
19647 | break; |
19648 | } | |
63d06c5c | 19649 | |
f792889a | 19650 | return this_type; |
63d06c5c DC |
19651 | } |
19652 | ||
abc72ce4 DE |
19653 | /* See if we can figure out if the class lives in a namespace. We do |
19654 | this by looking for a member function; its demangled name will | |
19655 | contain namespace info, if there is any. | |
19656 | Return the computed name or NULL. | |
19657 | Space for the result is allocated on the objfile's obstack. | |
19658 | This is the full-die version of guess_partial_die_structure_name. | |
19659 | In this case we know DIE has no useful parent. */ | |
19660 | ||
19661 | static char * | |
19662 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
19663 | { | |
19664 | struct die_info *spec_die; | |
19665 | struct dwarf2_cu *spec_cu; | |
19666 | struct die_info *child; | |
19667 | ||
19668 | spec_cu = cu; | |
19669 | spec_die = die_specification (die, &spec_cu); | |
19670 | if (spec_die != NULL) | |
19671 | { | |
19672 | die = spec_die; | |
19673 | cu = spec_cu; | |
19674 | } | |
19675 | ||
19676 | for (child = die->child; | |
19677 | child != NULL; | |
19678 | child = child->sibling) | |
19679 | { | |
19680 | if (child->tag == DW_TAG_subprogram) | |
19681 | { | |
7d45c7c3 | 19682 | const char *linkage_name; |
abc72ce4 | 19683 | |
7d45c7c3 KB |
19684 | linkage_name = dwarf2_string_attr (child, DW_AT_linkage_name, cu); |
19685 | if (linkage_name == NULL) | |
19686 | linkage_name = dwarf2_string_attr (child, DW_AT_MIPS_linkage_name, | |
19687 | cu); | |
19688 | if (linkage_name != NULL) | |
abc72ce4 DE |
19689 | { |
19690 | char *actual_name | |
19691 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 19692 | linkage_name); |
abc72ce4 DE |
19693 | char *name = NULL; |
19694 | ||
19695 | if (actual_name != NULL) | |
19696 | { | |
15d034d0 | 19697 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
19698 | |
19699 | if (die_name != NULL | |
19700 | && strcmp (die_name, actual_name) != 0) | |
19701 | { | |
19702 | /* Strip off the class name from the full name. | |
19703 | We want the prefix. */ | |
19704 | int die_name_len = strlen (die_name); | |
19705 | int actual_name_len = strlen (actual_name); | |
19706 | ||
19707 | /* Test for '::' as a sanity check. */ | |
19708 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
19709 | && actual_name[actual_name_len |
19710 | - die_name_len - 1] == ':') | |
224c3ddb SM |
19711 | name = (char *) obstack_copy0 ( |
19712 | &cu->objfile->per_bfd->storage_obstack, | |
19713 | actual_name, actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
19714 | } |
19715 | } | |
19716 | xfree (actual_name); | |
19717 | return name; | |
19718 | } | |
19719 | } | |
19720 | } | |
19721 | ||
19722 | return NULL; | |
19723 | } | |
19724 | ||
96408a79 SA |
19725 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
19726 | prefix part in such case. See | |
19727 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
19728 | ||
19729 | static char * | |
19730 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
19731 | { | |
19732 | struct attribute *attr; | |
e6a959d6 | 19733 | const char *base; |
96408a79 SA |
19734 | |
19735 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
19736 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
19737 | return NULL; | |
19738 | ||
7d45c7c3 | 19739 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
19740 | return NULL; |
19741 | ||
19742 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
19743 | if (attr == NULL) | |
19744 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
19745 | if (attr == NULL || DW_STRING (attr) == NULL) | |
19746 | return NULL; | |
19747 | ||
19748 | /* dwarf2_name had to be already called. */ | |
19749 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
19750 | ||
19751 | /* Strip the base name, keep any leading namespaces/classes. */ | |
19752 | base = strrchr (DW_STRING (attr), ':'); | |
19753 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
19754 | return ""; | |
19755 | ||
224c3ddb SM |
19756 | return (char *) obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
19757 | DW_STRING (attr), | |
19758 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
19759 | } |
19760 | ||
fdde2d81 | 19761 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 19762 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 19763 | |
0114d602 DJ |
19764 | For example, if we're within the method foo() in the following |
19765 | code: | |
19766 | ||
19767 | namespace N { | |
19768 | class C { | |
19769 | void foo () { | |
19770 | } | |
19771 | }; | |
19772 | } | |
19773 | ||
19774 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 19775 | |
0d5cff50 | 19776 | static const char * |
e142c38c | 19777 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 19778 | { |
0114d602 DJ |
19779 | struct die_info *parent, *spec_die; |
19780 | struct dwarf2_cu *spec_cu; | |
19781 | struct type *parent_type; | |
96408a79 | 19782 | char *retval; |
63d06c5c | 19783 | |
9c37b5ae | 19784 | if (cu->language != language_cplus |
c44af4eb TT |
19785 | && cu->language != language_fortran && cu->language != language_d |
19786 | && cu->language != language_rust) | |
0114d602 DJ |
19787 | return ""; |
19788 | ||
96408a79 SA |
19789 | retval = anonymous_struct_prefix (die, cu); |
19790 | if (retval) | |
19791 | return retval; | |
19792 | ||
0114d602 DJ |
19793 | /* We have to be careful in the presence of DW_AT_specification. |
19794 | For example, with GCC 3.4, given the code | |
19795 | ||
19796 | namespace N { | |
19797 | void foo() { | |
19798 | // Definition of N::foo. | |
19799 | } | |
19800 | } | |
19801 | ||
19802 | then we'll have a tree of DIEs like this: | |
19803 | ||
19804 | 1: DW_TAG_compile_unit | |
19805 | 2: DW_TAG_namespace // N | |
19806 | 3: DW_TAG_subprogram // declaration of N::foo | |
19807 | 4: DW_TAG_subprogram // definition of N::foo | |
19808 | DW_AT_specification // refers to die #3 | |
19809 | ||
19810 | Thus, when processing die #4, we have to pretend that we're in | |
19811 | the context of its DW_AT_specification, namely the contex of die | |
19812 | #3. */ | |
19813 | spec_cu = cu; | |
19814 | spec_die = die_specification (die, &spec_cu); | |
19815 | if (spec_die == NULL) | |
19816 | parent = die->parent; | |
19817 | else | |
63d06c5c | 19818 | { |
0114d602 DJ |
19819 | parent = spec_die->parent; |
19820 | cu = spec_cu; | |
63d06c5c | 19821 | } |
0114d602 DJ |
19822 | |
19823 | if (parent == NULL) | |
19824 | return ""; | |
98bfdba5 PA |
19825 | else if (parent->building_fullname) |
19826 | { | |
19827 | const char *name; | |
19828 | const char *parent_name; | |
19829 | ||
19830 | /* It has been seen on RealView 2.2 built binaries, | |
19831 | DW_TAG_template_type_param types actually _defined_ as | |
19832 | children of the parent class: | |
19833 | ||
19834 | enum E {}; | |
19835 | template class <class Enum> Class{}; | |
19836 | Class<enum E> class_e; | |
19837 | ||
19838 | 1: DW_TAG_class_type (Class) | |
19839 | 2: DW_TAG_enumeration_type (E) | |
19840 | 3: DW_TAG_enumerator (enum1:0) | |
19841 | 3: DW_TAG_enumerator (enum2:1) | |
19842 | ... | |
19843 | 2: DW_TAG_template_type_param | |
19844 | DW_AT_type DW_FORM_ref_udata (E) | |
19845 | ||
19846 | Besides being broken debug info, it can put GDB into an | |
19847 | infinite loop. Consider: | |
19848 | ||
19849 | When we're building the full name for Class<E>, we'll start | |
19850 | at Class, and go look over its template type parameters, | |
19851 | finding E. We'll then try to build the full name of E, and | |
19852 | reach here. We're now trying to build the full name of E, | |
19853 | and look over the parent DIE for containing scope. In the | |
19854 | broken case, if we followed the parent DIE of E, we'd again | |
19855 | find Class, and once again go look at its template type | |
19856 | arguments, etc., etc. Simply don't consider such parent die | |
19857 | as source-level parent of this die (it can't be, the language | |
19858 | doesn't allow it), and break the loop here. */ | |
19859 | name = dwarf2_name (die, cu); | |
19860 | parent_name = dwarf2_name (parent, cu); | |
19861 | complaint (&symfile_complaints, | |
19862 | _("template param type '%s' defined within parent '%s'"), | |
19863 | name ? name : "<unknown>", | |
19864 | parent_name ? parent_name : "<unknown>"); | |
19865 | return ""; | |
19866 | } | |
63d06c5c | 19867 | else |
0114d602 DJ |
19868 | switch (parent->tag) |
19869 | { | |
63d06c5c | 19870 | case DW_TAG_namespace: |
0114d602 | 19871 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
19872 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
19873 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
19874 | Work around this problem here. */ | |
19875 | if (cu->language == language_cplus | |
19876 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
19877 | return ""; | |
0114d602 DJ |
19878 | /* We give a name to even anonymous namespaces. */ |
19879 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 19880 | case DW_TAG_class_type: |
680b30c7 | 19881 | case DW_TAG_interface_type: |
63d06c5c | 19882 | case DW_TAG_structure_type: |
0114d602 | 19883 | case DW_TAG_union_type: |
f55ee35c | 19884 | case DW_TAG_module: |
0114d602 DJ |
19885 | parent_type = read_type_die (parent, cu); |
19886 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19887 | return TYPE_TAG_NAME (parent_type); | |
19888 | else | |
19889 | /* An anonymous structure is only allowed non-static data | |
19890 | members; no typedefs, no member functions, et cetera. | |
19891 | So it does not need a prefix. */ | |
19892 | return ""; | |
abc72ce4 | 19893 | case DW_TAG_compile_unit: |
95554aad | 19894 | case DW_TAG_partial_unit: |
abc72ce4 DE |
19895 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
19896 | if (cu->language == language_cplus | |
8b70b953 | 19897 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
19898 | && die->child != NULL |
19899 | && (die->tag == DW_TAG_class_type | |
19900 | || die->tag == DW_TAG_structure_type | |
19901 | || die->tag == DW_TAG_union_type)) | |
19902 | { | |
19903 | char *name = guess_full_die_structure_name (die, cu); | |
19904 | if (name != NULL) | |
19905 | return name; | |
19906 | } | |
19907 | return ""; | |
3d567982 TT |
19908 | case DW_TAG_enumeration_type: |
19909 | parent_type = read_type_die (parent, cu); | |
19910 | if (TYPE_DECLARED_CLASS (parent_type)) | |
19911 | { | |
19912 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19913 | return TYPE_TAG_NAME (parent_type); | |
19914 | return ""; | |
19915 | } | |
19916 | /* Fall through. */ | |
63d06c5c | 19917 | default: |
8176b9b8 | 19918 | return determine_prefix (parent, cu); |
63d06c5c | 19919 | } |
63d06c5c DC |
19920 | } |
19921 | ||
3e43a32a MS |
19922 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
19923 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
19924 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
19925 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
19926 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 19927 | |
f55ee35c | 19928 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
19929 | |
19930 | static char * | |
f55ee35c JK |
19931 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
19932 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 19933 | { |
f55ee35c | 19934 | const char *lead = ""; |
5c315b68 | 19935 | const char *sep; |
63d06c5c | 19936 | |
3e43a32a MS |
19937 | if (suffix == NULL || suffix[0] == '\0' |
19938 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 19939 | sep = ""; |
45280282 IB |
19940 | else if (cu->language == language_d) |
19941 | { | |
19942 | /* For D, the 'main' function could be defined in any module, but it | |
19943 | should never be prefixed. */ | |
19944 | if (strcmp (suffix, "D main") == 0) | |
19945 | { | |
19946 | prefix = ""; | |
19947 | sep = ""; | |
19948 | } | |
19949 | else | |
19950 | sep = "."; | |
19951 | } | |
f55ee35c JK |
19952 | else if (cu->language == language_fortran && physname) |
19953 | { | |
19954 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
19955 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
19956 | ||
19957 | lead = "__"; | |
19958 | sep = "_MOD_"; | |
19959 | } | |
987504bb JJ |
19960 | else |
19961 | sep = "::"; | |
63d06c5c | 19962 | |
6dd47d34 DE |
19963 | if (prefix == NULL) |
19964 | prefix = ""; | |
19965 | if (suffix == NULL) | |
19966 | suffix = ""; | |
19967 | ||
987504bb JJ |
19968 | if (obs == NULL) |
19969 | { | |
3e43a32a | 19970 | char *retval |
224c3ddb SM |
19971 | = ((char *) |
19972 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 19973 | |
f55ee35c JK |
19974 | strcpy (retval, lead); |
19975 | strcat (retval, prefix); | |
6dd47d34 DE |
19976 | strcat (retval, sep); |
19977 | strcat (retval, suffix); | |
63d06c5c DC |
19978 | return retval; |
19979 | } | |
987504bb JJ |
19980 | else |
19981 | { | |
19982 | /* We have an obstack. */ | |
f55ee35c | 19983 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 19984 | } |
63d06c5c DC |
19985 | } |
19986 | ||
c906108c SS |
19987 | /* Return sibling of die, NULL if no sibling. */ |
19988 | ||
f9aca02d | 19989 | static struct die_info * |
fba45db2 | 19990 | sibling_die (struct die_info *die) |
c906108c | 19991 | { |
639d11d3 | 19992 | return die->sibling; |
c906108c SS |
19993 | } |
19994 | ||
71c25dea TT |
19995 | /* Get name of a die, return NULL if not found. */ |
19996 | ||
15d034d0 TT |
19997 | static const char * |
19998 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
19999 | struct obstack *obstack) |
20000 | { | |
20001 | if (name && cu->language == language_cplus) | |
20002 | { | |
2f408ecb | 20003 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 20004 | |
2f408ecb | 20005 | if (!canon_name.empty ()) |
71c25dea | 20006 | { |
2f408ecb PA |
20007 | if (canon_name != name) |
20008 | name = (const char *) obstack_copy0 (obstack, | |
20009 | canon_name.c_str (), | |
20010 | canon_name.length ()); | |
71c25dea TT |
20011 | } |
20012 | } | |
20013 | ||
20014 | return name; | |
c906108c SS |
20015 | } |
20016 | ||
96553a0c DE |
20017 | /* Get name of a die, return NULL if not found. |
20018 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 20019 | |
15d034d0 | 20020 | static const char * |
e142c38c | 20021 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
20022 | { |
20023 | struct attribute *attr; | |
20024 | ||
e142c38c | 20025 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 20026 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 20027 | && die->tag != DW_TAG_namespace |
53832f31 TT |
20028 | && die->tag != DW_TAG_class_type |
20029 | && die->tag != DW_TAG_interface_type | |
20030 | && die->tag != DW_TAG_structure_type | |
20031 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
20032 | return NULL; |
20033 | ||
20034 | switch (die->tag) | |
20035 | { | |
20036 | case DW_TAG_compile_unit: | |
95554aad | 20037 | case DW_TAG_partial_unit: |
71c25dea TT |
20038 | /* Compilation units have a DW_AT_name that is a filename, not |
20039 | a source language identifier. */ | |
20040 | case DW_TAG_enumeration_type: | |
20041 | case DW_TAG_enumerator: | |
20042 | /* These tags always have simple identifiers already; no need | |
20043 | to canonicalize them. */ | |
20044 | return DW_STRING (attr); | |
907af001 | 20045 | |
96553a0c DE |
20046 | case DW_TAG_namespace: |
20047 | if (attr != NULL && DW_STRING (attr) != NULL) | |
20048 | return DW_STRING (attr); | |
20049 | return CP_ANONYMOUS_NAMESPACE_STR; | |
20050 | ||
907af001 UW |
20051 | case DW_TAG_class_type: |
20052 | case DW_TAG_interface_type: | |
20053 | case DW_TAG_structure_type: | |
20054 | case DW_TAG_union_type: | |
20055 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
20056 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
20057 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
20058 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 20059 | if (attr && DW_STRING (attr) |
61012eef GB |
20060 | && (startswith (DW_STRING (attr), "._") |
20061 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 20062 | return NULL; |
53832f31 TT |
20063 | |
20064 | /* GCC might emit a nameless typedef that has a linkage name. See | |
20065 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
20066 | if (!attr || DW_STRING (attr) == NULL) | |
20067 | { | |
df5c6c50 | 20068 | char *demangled = NULL; |
53832f31 TT |
20069 | |
20070 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
20071 | if (attr == NULL) | |
20072 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
20073 | ||
20074 | if (attr == NULL || DW_STRING (attr) == NULL) | |
20075 | return NULL; | |
20076 | ||
df5c6c50 JK |
20077 | /* Avoid demangling DW_STRING (attr) the second time on a second |
20078 | call for the same DIE. */ | |
20079 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 20080 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
20081 | |
20082 | if (demangled) | |
20083 | { | |
e6a959d6 | 20084 | const char *base; |
96408a79 | 20085 | |
53832f31 | 20086 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 20087 | DW_STRING (attr) |
224c3ddb SM |
20088 | = ((const char *) |
20089 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
20090 | demangled, strlen (demangled))); | |
53832f31 TT |
20091 | DW_STRING_IS_CANONICAL (attr) = 1; |
20092 | xfree (demangled); | |
96408a79 SA |
20093 | |
20094 | /* Strip any leading namespaces/classes, keep only the base name. | |
20095 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
20096 | base = strrchr (DW_STRING (attr), ':'); | |
20097 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
20098 | return &base[1]; | |
20099 | else | |
20100 | return DW_STRING (attr); | |
53832f31 TT |
20101 | } |
20102 | } | |
907af001 UW |
20103 | break; |
20104 | ||
71c25dea | 20105 | default: |
907af001 UW |
20106 | break; |
20107 | } | |
20108 | ||
20109 | if (!DW_STRING_IS_CANONICAL (attr)) | |
20110 | { | |
20111 | DW_STRING (attr) | |
20112 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
34a68019 | 20113 | &cu->objfile->per_bfd->storage_obstack); |
907af001 | 20114 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 20115 | } |
907af001 | 20116 | return DW_STRING (attr); |
9219021c DC |
20117 | } |
20118 | ||
20119 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
20120 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
20121 | containing the return value on output. */ | |
9219021c DC |
20122 | |
20123 | static struct die_info * | |
f2f0e013 | 20124 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
20125 | { |
20126 | struct attribute *attr; | |
9219021c | 20127 | |
f2f0e013 | 20128 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
20129 | if (attr == NULL) |
20130 | return NULL; | |
20131 | ||
f2f0e013 | 20132 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
20133 | } |
20134 | ||
c906108c SS |
20135 | /* Convert a DIE tag into its string name. */ |
20136 | ||
f39c6ffd | 20137 | static const char * |
aa1ee363 | 20138 | dwarf_tag_name (unsigned tag) |
c906108c | 20139 | { |
f39c6ffd TT |
20140 | const char *name = get_DW_TAG_name (tag); |
20141 | ||
20142 | if (name == NULL) | |
20143 | return "DW_TAG_<unknown>"; | |
20144 | ||
20145 | return name; | |
c906108c SS |
20146 | } |
20147 | ||
20148 | /* Convert a DWARF attribute code into its string name. */ | |
20149 | ||
f39c6ffd | 20150 | static const char * |
aa1ee363 | 20151 | dwarf_attr_name (unsigned attr) |
c906108c | 20152 | { |
f39c6ffd TT |
20153 | const char *name; |
20154 | ||
c764a876 | 20155 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
20156 | if (attr == DW_AT_MIPS_fde) |
20157 | return "DW_AT_MIPS_fde"; | |
20158 | #else | |
20159 | if (attr == DW_AT_HP_block_index) | |
20160 | return "DW_AT_HP_block_index"; | |
c764a876 | 20161 | #endif |
f39c6ffd TT |
20162 | |
20163 | name = get_DW_AT_name (attr); | |
20164 | ||
20165 | if (name == NULL) | |
20166 | return "DW_AT_<unknown>"; | |
20167 | ||
20168 | return name; | |
c906108c SS |
20169 | } |
20170 | ||
20171 | /* Convert a DWARF value form code into its string name. */ | |
20172 | ||
f39c6ffd | 20173 | static const char * |
aa1ee363 | 20174 | dwarf_form_name (unsigned form) |
c906108c | 20175 | { |
f39c6ffd TT |
20176 | const char *name = get_DW_FORM_name (form); |
20177 | ||
20178 | if (name == NULL) | |
20179 | return "DW_FORM_<unknown>"; | |
20180 | ||
20181 | return name; | |
c906108c SS |
20182 | } |
20183 | ||
20184 | static char * | |
fba45db2 | 20185 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
20186 | { |
20187 | if (mybool) | |
20188 | return "TRUE"; | |
20189 | else | |
20190 | return "FALSE"; | |
20191 | } | |
20192 | ||
20193 | /* Convert a DWARF type code into its string name. */ | |
20194 | ||
f39c6ffd | 20195 | static const char * |
aa1ee363 | 20196 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 20197 | { |
f39c6ffd | 20198 | const char *name = get_DW_ATE_name (enc); |
c906108c | 20199 | |
f39c6ffd TT |
20200 | if (name == NULL) |
20201 | return "DW_ATE_<unknown>"; | |
c906108c | 20202 | |
f39c6ffd | 20203 | return name; |
c906108c | 20204 | } |
c906108c | 20205 | |
f9aca02d | 20206 | static void |
d97bc12b | 20207 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
20208 | { |
20209 | unsigned int i; | |
20210 | ||
d97bc12b DE |
20211 | print_spaces (indent, f); |
20212 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 20213 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
20214 | |
20215 | if (die->parent != NULL) | |
20216 | { | |
20217 | print_spaces (indent, f); | |
20218 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 20219 | die->parent->offset.sect_off); |
d97bc12b DE |
20220 | } |
20221 | ||
20222 | print_spaces (indent, f); | |
20223 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 20224 | dwarf_bool_name (die->child != NULL)); |
c906108c | 20225 | |
d97bc12b DE |
20226 | print_spaces (indent, f); |
20227 | fprintf_unfiltered (f, " attributes:\n"); | |
20228 | ||
c906108c SS |
20229 | for (i = 0; i < die->num_attrs; ++i) |
20230 | { | |
d97bc12b DE |
20231 | print_spaces (indent, f); |
20232 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
20233 | dwarf_attr_name (die->attrs[i].name), |
20234 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 20235 | |
c906108c SS |
20236 | switch (die->attrs[i].form) |
20237 | { | |
c906108c | 20238 | case DW_FORM_addr: |
3019eac3 | 20239 | case DW_FORM_GNU_addr_index: |
d97bc12b | 20240 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 20241 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
20242 | break; |
20243 | case DW_FORM_block2: | |
20244 | case DW_FORM_block4: | |
20245 | case DW_FORM_block: | |
20246 | case DW_FORM_block1: | |
56eb65bd SP |
20247 | fprintf_unfiltered (f, "block: size %s", |
20248 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 20249 | break; |
2dc7f7b3 | 20250 | case DW_FORM_exprloc: |
56eb65bd SP |
20251 | fprintf_unfiltered (f, "expression: size %s", |
20252 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 20253 | break; |
4568ecf9 DE |
20254 | case DW_FORM_ref_addr: |
20255 | fprintf_unfiltered (f, "ref address: "); | |
20256 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
20257 | break; | |
36586728 TT |
20258 | case DW_FORM_GNU_ref_alt: |
20259 | fprintf_unfiltered (f, "alt ref address: "); | |
20260 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
20261 | break; | |
10b3939b DJ |
20262 | case DW_FORM_ref1: |
20263 | case DW_FORM_ref2: | |
20264 | case DW_FORM_ref4: | |
4568ecf9 DE |
20265 | case DW_FORM_ref8: |
20266 | case DW_FORM_ref_udata: | |
d97bc12b | 20267 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 20268 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 20269 | break; |
c906108c SS |
20270 | case DW_FORM_data1: |
20271 | case DW_FORM_data2: | |
20272 | case DW_FORM_data4: | |
ce5d95e1 | 20273 | case DW_FORM_data8: |
c906108c SS |
20274 | case DW_FORM_udata: |
20275 | case DW_FORM_sdata: | |
43bbcdc2 PH |
20276 | fprintf_unfiltered (f, "constant: %s", |
20277 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 20278 | break; |
2dc7f7b3 TT |
20279 | case DW_FORM_sec_offset: |
20280 | fprintf_unfiltered (f, "section offset: %s", | |
20281 | pulongest (DW_UNSND (&die->attrs[i]))); | |
20282 | break; | |
55f1336d | 20283 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
20284 | fprintf_unfiltered (f, "signature: %s", |
20285 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 20286 | break; |
c906108c | 20287 | case DW_FORM_string: |
4bdf3d34 | 20288 | case DW_FORM_strp: |
43988095 | 20289 | case DW_FORM_line_strp: |
3019eac3 | 20290 | case DW_FORM_GNU_str_index: |
36586728 | 20291 | case DW_FORM_GNU_strp_alt: |
8285870a | 20292 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 20293 | DW_STRING (&die->attrs[i]) |
8285870a JK |
20294 | ? DW_STRING (&die->attrs[i]) : "", |
20295 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
20296 | break; |
20297 | case DW_FORM_flag: | |
20298 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 20299 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 20300 | else |
d97bc12b | 20301 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 20302 | break; |
2dc7f7b3 TT |
20303 | case DW_FORM_flag_present: |
20304 | fprintf_unfiltered (f, "flag: TRUE"); | |
20305 | break; | |
a8329558 | 20306 | case DW_FORM_indirect: |
0963b4bd MS |
20307 | /* The reader will have reduced the indirect form to |
20308 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
20309 | fprintf_unfiltered (f, |
20310 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 20311 | break; |
c906108c | 20312 | default: |
d97bc12b | 20313 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 20314 | die->attrs[i].form); |
d97bc12b | 20315 | break; |
c906108c | 20316 | } |
d97bc12b | 20317 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
20318 | } |
20319 | } | |
20320 | ||
f9aca02d | 20321 | static void |
d97bc12b | 20322 | dump_die_for_error (struct die_info *die) |
c906108c | 20323 | { |
d97bc12b DE |
20324 | dump_die_shallow (gdb_stderr, 0, die); |
20325 | } | |
20326 | ||
20327 | static void | |
20328 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
20329 | { | |
20330 | int indent = level * 4; | |
20331 | ||
20332 | gdb_assert (die != NULL); | |
20333 | ||
20334 | if (level >= max_level) | |
20335 | return; | |
20336 | ||
20337 | dump_die_shallow (f, indent, die); | |
20338 | ||
20339 | if (die->child != NULL) | |
c906108c | 20340 | { |
d97bc12b DE |
20341 | print_spaces (indent, f); |
20342 | fprintf_unfiltered (f, " Children:"); | |
20343 | if (level + 1 < max_level) | |
20344 | { | |
20345 | fprintf_unfiltered (f, "\n"); | |
20346 | dump_die_1 (f, level + 1, max_level, die->child); | |
20347 | } | |
20348 | else | |
20349 | { | |
3e43a32a MS |
20350 | fprintf_unfiltered (f, |
20351 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
20352 | } |
20353 | } | |
20354 | ||
20355 | if (die->sibling != NULL && level > 0) | |
20356 | { | |
20357 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
20358 | } |
20359 | } | |
20360 | ||
d97bc12b DE |
20361 | /* This is called from the pdie macro in gdbinit.in. |
20362 | It's not static so gcc will keep a copy callable from gdb. */ | |
20363 | ||
20364 | void | |
20365 | dump_die (struct die_info *die, int max_level) | |
20366 | { | |
20367 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
20368 | } | |
20369 | ||
f9aca02d | 20370 | static void |
51545339 | 20371 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20372 | { |
51545339 | 20373 | void **slot; |
c906108c | 20374 | |
b64f50a1 JK |
20375 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
20376 | INSERT); | |
51545339 DJ |
20377 | |
20378 | *slot = die; | |
c906108c SS |
20379 | } |
20380 | ||
b64f50a1 JK |
20381 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
20382 | required kind. */ | |
20383 | ||
20384 | static sect_offset | |
ff39bb5e | 20385 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 20386 | { |
4568ecf9 | 20387 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 20388 | |
7771576e | 20389 | if (attr_form_is_ref (attr)) |
b64f50a1 | 20390 | return retval; |
93311388 | 20391 | |
b64f50a1 | 20392 | retval.sect_off = 0; |
93311388 DE |
20393 | complaint (&symfile_complaints, |
20394 | _("unsupported die ref attribute form: '%s'"), | |
20395 | dwarf_form_name (attr->form)); | |
b64f50a1 | 20396 | return retval; |
c906108c SS |
20397 | } |
20398 | ||
43bbcdc2 PH |
20399 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
20400 | * the value held by the attribute is not constant. */ | |
a02abb62 | 20401 | |
43bbcdc2 | 20402 | static LONGEST |
ff39bb5e | 20403 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 JB |
20404 | { |
20405 | if (attr->form == DW_FORM_sdata) | |
20406 | return DW_SND (attr); | |
20407 | else if (attr->form == DW_FORM_udata | |
20408 | || attr->form == DW_FORM_data1 | |
20409 | || attr->form == DW_FORM_data2 | |
20410 | || attr->form == DW_FORM_data4 | |
20411 | || attr->form == DW_FORM_data8) | |
20412 | return DW_UNSND (attr); | |
20413 | else | |
20414 | { | |
3e43a32a MS |
20415 | complaint (&symfile_complaints, |
20416 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
20417 | dwarf_form_name (attr->form)); |
20418 | return default_value; | |
20419 | } | |
20420 | } | |
20421 | ||
348e048f DE |
20422 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
20423 | On entry *REF_CU is the CU of SRC_DIE. | |
20424 | On exit *REF_CU is the CU of the result. */ | |
20425 | ||
20426 | static struct die_info * | |
ff39bb5e | 20427 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
20428 | struct dwarf2_cu **ref_cu) |
20429 | { | |
20430 | struct die_info *die; | |
20431 | ||
7771576e | 20432 | if (attr_form_is_ref (attr)) |
348e048f | 20433 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 20434 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
20435 | die = follow_die_sig (src_die, attr, ref_cu); |
20436 | else | |
20437 | { | |
20438 | dump_die_for_error (src_die); | |
20439 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 20440 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
20441 | } |
20442 | ||
20443 | return die; | |
03dd20cc DJ |
20444 | } |
20445 | ||
5c631832 | 20446 | /* Follow reference OFFSET. |
673bfd45 DE |
20447 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
20448 | On exit *REF_CU is the CU of the result. | |
20449 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 20450 | |
f9aca02d | 20451 | static struct die_info * |
36586728 TT |
20452 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
20453 | struct dwarf2_cu **ref_cu) | |
c906108c | 20454 | { |
10b3939b | 20455 | struct die_info temp_die; |
f2f0e013 | 20456 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 20457 | |
348e048f DE |
20458 | gdb_assert (cu->per_cu != NULL); |
20459 | ||
98bfdba5 PA |
20460 | target_cu = cu; |
20461 | ||
3019eac3 | 20462 | if (cu->per_cu->is_debug_types) |
348e048f DE |
20463 | { |
20464 | /* .debug_types CUs cannot reference anything outside their CU. | |
20465 | If they need to, they have to reference a signatured type via | |
55f1336d | 20466 | DW_FORM_ref_sig8. */ |
348e048f | 20467 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 20468 | return NULL; |
348e048f | 20469 | } |
36586728 TT |
20470 | else if (offset_in_dwz != cu->per_cu->is_dwz |
20471 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
20472 | { |
20473 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 20474 | |
36586728 TT |
20475 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
20476 | cu->objfile); | |
03dd20cc DJ |
20477 | |
20478 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
20479 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
20480 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 20481 | |
10b3939b DJ |
20482 | target_cu = per_cu->cu; |
20483 | } | |
98bfdba5 PA |
20484 | else if (cu->dies == NULL) |
20485 | { | |
20486 | /* We're loading full DIEs during partial symbol reading. */ | |
20487 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 20488 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 20489 | } |
c906108c | 20490 | |
f2f0e013 | 20491 | *ref_cu = target_cu; |
51545339 | 20492 | temp_die.offset = offset; |
9a3c8263 SM |
20493 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
20494 | &temp_die, offset.sect_off); | |
5c631832 | 20495 | } |
10b3939b | 20496 | |
5c631832 JK |
20497 | /* Follow reference attribute ATTR of SRC_DIE. |
20498 | On entry *REF_CU is the CU of SRC_DIE. | |
20499 | On exit *REF_CU is the CU of the result. */ | |
20500 | ||
20501 | static struct die_info * | |
ff39bb5e | 20502 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
20503 | struct dwarf2_cu **ref_cu) |
20504 | { | |
b64f50a1 | 20505 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
20506 | struct dwarf2_cu *cu = *ref_cu; |
20507 | struct die_info *die; | |
20508 | ||
36586728 TT |
20509 | die = follow_die_offset (offset, |
20510 | (attr->form == DW_FORM_GNU_ref_alt | |
20511 | || cu->per_cu->is_dwz), | |
20512 | ref_cu); | |
5c631832 JK |
20513 | if (!die) |
20514 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
20515 | "at 0x%x [in module %s]"), | |
4262abfb JK |
20516 | offset.sect_off, src_die->offset.sect_off, |
20517 | objfile_name (cu->objfile)); | |
348e048f | 20518 | |
5c631832 JK |
20519 | return die; |
20520 | } | |
20521 | ||
d83e736b JK |
20522 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
20523 | Returned value is intended for DW_OP_call*. Returned | |
20524 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
20525 | |
20526 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
20527 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
20528 | struct dwarf2_per_cu_data *per_cu, | |
20529 | CORE_ADDR (*get_frame_pc) (void *baton), | |
20530 | void *baton) | |
5c631832 | 20531 | { |
918dd910 | 20532 | struct dwarf2_cu *cu; |
5c631832 JK |
20533 | struct die_info *die; |
20534 | struct attribute *attr; | |
20535 | struct dwarf2_locexpr_baton retval; | |
20536 | ||
8cf6f0b1 TT |
20537 | dw2_setup (per_cu->objfile); |
20538 | ||
918dd910 JK |
20539 | if (per_cu->cu == NULL) |
20540 | load_cu (per_cu); | |
20541 | cu = per_cu->cu; | |
cc12ce38 DE |
20542 | if (cu == NULL) |
20543 | { | |
20544 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
20545 | Instead just throw an error, not much else we can do. */ | |
20546 | error (_("Dwarf Error: Dummy CU at 0x%x referenced in module %s"), | |
20547 | offset.sect_off, objfile_name (per_cu->objfile)); | |
20548 | } | |
918dd910 | 20549 | |
36586728 | 20550 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
20551 | if (!die) |
20552 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 20553 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
20554 | |
20555 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
20556 | if (!attr) | |
20557 | { | |
e103e986 JK |
20558 | /* DWARF: "If there is no such attribute, then there is no effect.". |
20559 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 20560 | |
e103e986 | 20561 | retval.data = NULL; |
5c631832 JK |
20562 | retval.size = 0; |
20563 | } | |
8cf6f0b1 TT |
20564 | else if (attr_form_is_section_offset (attr)) |
20565 | { | |
20566 | struct dwarf2_loclist_baton loclist_baton; | |
20567 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
20568 | size_t size; | |
20569 | ||
20570 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
20571 | ||
20572 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
20573 | &size, pc); | |
20574 | retval.size = size; | |
20575 | } | |
5c631832 JK |
20576 | else |
20577 | { | |
20578 | if (!attr_form_is_block (attr)) | |
20579 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
20580 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
4262abfb | 20581 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
20582 | |
20583 | retval.data = DW_BLOCK (attr)->data; | |
20584 | retval.size = DW_BLOCK (attr)->size; | |
20585 | } | |
20586 | retval.per_cu = cu->per_cu; | |
918dd910 | 20587 | |
918dd910 JK |
20588 | age_cached_comp_units (); |
20589 | ||
5c631832 | 20590 | return retval; |
348e048f DE |
20591 | } |
20592 | ||
8b9737bf TT |
20593 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
20594 | offset. */ | |
20595 | ||
20596 | struct dwarf2_locexpr_baton | |
20597 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
20598 | struct dwarf2_per_cu_data *per_cu, | |
20599 | CORE_ADDR (*get_frame_pc) (void *baton), | |
20600 | void *baton) | |
20601 | { | |
20602 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
20603 | ||
20604 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
20605 | } | |
20606 | ||
b6807d98 TT |
20607 | /* Write a constant of a given type as target-ordered bytes into |
20608 | OBSTACK. */ | |
20609 | ||
20610 | static const gdb_byte * | |
20611 | write_constant_as_bytes (struct obstack *obstack, | |
20612 | enum bfd_endian byte_order, | |
20613 | struct type *type, | |
20614 | ULONGEST value, | |
20615 | LONGEST *len) | |
20616 | { | |
20617 | gdb_byte *result; | |
20618 | ||
20619 | *len = TYPE_LENGTH (type); | |
224c3ddb | 20620 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
20621 | store_unsigned_integer (result, *len, byte_order, value); |
20622 | ||
20623 | return result; | |
20624 | } | |
20625 | ||
20626 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
20627 | pointer to the constant bytes and set LEN to the length of the | |
20628 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
20629 | does not have a DW_AT_const_value, return NULL. */ | |
20630 | ||
20631 | const gdb_byte * | |
20632 | dwarf2_fetch_constant_bytes (sect_offset offset, | |
20633 | struct dwarf2_per_cu_data *per_cu, | |
20634 | struct obstack *obstack, | |
20635 | LONGEST *len) | |
20636 | { | |
20637 | struct dwarf2_cu *cu; | |
20638 | struct die_info *die; | |
20639 | struct attribute *attr; | |
20640 | const gdb_byte *result = NULL; | |
20641 | struct type *type; | |
20642 | LONGEST value; | |
20643 | enum bfd_endian byte_order; | |
20644 | ||
20645 | dw2_setup (per_cu->objfile); | |
20646 | ||
20647 | if (per_cu->cu == NULL) | |
20648 | load_cu (per_cu); | |
20649 | cu = per_cu->cu; | |
cc12ce38 DE |
20650 | if (cu == NULL) |
20651 | { | |
20652 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
20653 | Instead just throw an error, not much else we can do. */ | |
20654 | error (_("Dwarf Error: Dummy CU at 0x%x referenced in module %s"), | |
20655 | offset.sect_off, objfile_name (per_cu->objfile)); | |
20656 | } | |
b6807d98 TT |
20657 | |
20658 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); | |
20659 | if (!die) | |
20660 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 20661 | offset.sect_off, objfile_name (per_cu->objfile)); |
b6807d98 TT |
20662 | |
20663 | ||
20664 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
20665 | if (attr == NULL) | |
20666 | return NULL; | |
20667 | ||
20668 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
20669 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
20670 | ||
20671 | switch (attr->form) | |
20672 | { | |
20673 | case DW_FORM_addr: | |
20674 | case DW_FORM_GNU_addr_index: | |
20675 | { | |
20676 | gdb_byte *tem; | |
20677 | ||
20678 | *len = cu->header.addr_size; | |
224c3ddb | 20679 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
20680 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
20681 | result = tem; | |
20682 | } | |
20683 | break; | |
20684 | case DW_FORM_string: | |
20685 | case DW_FORM_strp: | |
20686 | case DW_FORM_GNU_str_index: | |
20687 | case DW_FORM_GNU_strp_alt: | |
20688 | /* DW_STRING is already allocated on the objfile obstack, point | |
20689 | directly to it. */ | |
20690 | result = (const gdb_byte *) DW_STRING (attr); | |
20691 | *len = strlen (DW_STRING (attr)); | |
20692 | break; | |
20693 | case DW_FORM_block1: | |
20694 | case DW_FORM_block2: | |
20695 | case DW_FORM_block4: | |
20696 | case DW_FORM_block: | |
20697 | case DW_FORM_exprloc: | |
20698 | result = DW_BLOCK (attr)->data; | |
20699 | *len = DW_BLOCK (attr)->size; | |
20700 | break; | |
20701 | ||
20702 | /* The DW_AT_const_value attributes are supposed to carry the | |
20703 | symbol's value "represented as it would be on the target | |
20704 | architecture." By the time we get here, it's already been | |
20705 | converted to host endianness, so we just need to sign- or | |
20706 | zero-extend it as appropriate. */ | |
20707 | case DW_FORM_data1: | |
20708 | type = die_type (die, cu); | |
20709 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
20710 | if (result == NULL) | |
20711 | result = write_constant_as_bytes (obstack, byte_order, | |
20712 | type, value, len); | |
20713 | break; | |
20714 | case DW_FORM_data2: | |
20715 | type = die_type (die, cu); | |
20716 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
20717 | if (result == NULL) | |
20718 | result = write_constant_as_bytes (obstack, byte_order, | |
20719 | type, value, len); | |
20720 | break; | |
20721 | case DW_FORM_data4: | |
20722 | type = die_type (die, cu); | |
20723 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
20724 | if (result == NULL) | |
20725 | result = write_constant_as_bytes (obstack, byte_order, | |
20726 | type, value, len); | |
20727 | break; | |
20728 | case DW_FORM_data8: | |
20729 | type = die_type (die, cu); | |
20730 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
20731 | if (result == NULL) | |
20732 | result = write_constant_as_bytes (obstack, byte_order, | |
20733 | type, value, len); | |
20734 | break; | |
20735 | ||
20736 | case DW_FORM_sdata: | |
20737 | type = die_type (die, cu); | |
20738 | result = write_constant_as_bytes (obstack, byte_order, | |
20739 | type, DW_SND (attr), len); | |
20740 | break; | |
20741 | ||
20742 | case DW_FORM_udata: | |
20743 | type = die_type (die, cu); | |
20744 | result = write_constant_as_bytes (obstack, byte_order, | |
20745 | type, DW_UNSND (attr), len); | |
20746 | break; | |
20747 | ||
20748 | default: | |
20749 | complaint (&symfile_complaints, | |
20750 | _("unsupported const value attribute form: '%s'"), | |
20751 | dwarf_form_name (attr->form)); | |
20752 | break; | |
20753 | } | |
20754 | ||
20755 | return result; | |
20756 | } | |
20757 | ||
8a9b8146 TT |
20758 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
20759 | PER_CU. */ | |
20760 | ||
20761 | struct type * | |
b64f50a1 | 20762 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
20763 | struct dwarf2_per_cu_data *per_cu) |
20764 | { | |
b64f50a1 JK |
20765 | sect_offset die_offset_sect; |
20766 | ||
8a9b8146 | 20767 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
20768 | |
20769 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
20770 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
20771 | } |
20772 | ||
ac9ec31b | 20773 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 20774 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
20775 | On exit *REF_CU is the CU of the result. |
20776 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
20777 | |
20778 | static struct die_info * | |
ac9ec31b DE |
20779 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
20780 | struct dwarf2_cu **ref_cu) | |
348e048f | 20781 | { |
348e048f | 20782 | struct die_info temp_die; |
348e048f DE |
20783 | struct dwarf2_cu *sig_cu; |
20784 | struct die_info *die; | |
20785 | ||
ac9ec31b DE |
20786 | /* While it might be nice to assert sig_type->type == NULL here, |
20787 | we can get here for DW_AT_imported_declaration where we need | |
20788 | the DIE not the type. */ | |
348e048f DE |
20789 | |
20790 | /* If necessary, add it to the queue and load its DIEs. */ | |
20791 | ||
95554aad | 20792 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 20793 | read_signatured_type (sig_type); |
348e048f | 20794 | |
348e048f | 20795 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 20796 | gdb_assert (sig_cu != NULL); |
3019eac3 DE |
20797 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
20798 | temp_die.offset = sig_type->type_offset_in_section; | |
9a3c8263 SM |
20799 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
20800 | temp_die.offset.sect_off); | |
348e048f DE |
20801 | if (die) |
20802 | { | |
796a7ff8 DE |
20803 | /* For .gdb_index version 7 keep track of included TUs. |
20804 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
20805 | if (dwarf2_per_objfile->index_table != NULL | |
20806 | && dwarf2_per_objfile->index_table->version <= 7) | |
20807 | { | |
20808 | VEC_safe_push (dwarf2_per_cu_ptr, | |
20809 | (*ref_cu)->per_cu->imported_symtabs, | |
20810 | sig_cu->per_cu); | |
20811 | } | |
20812 | ||
348e048f DE |
20813 | *ref_cu = sig_cu; |
20814 | return die; | |
20815 | } | |
20816 | ||
ac9ec31b DE |
20817 | return NULL; |
20818 | } | |
20819 | ||
20820 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
20821 | On entry *REF_CU is the CU of SRC_DIE. | |
20822 | On exit *REF_CU is the CU of the result. | |
20823 | The result is the DIE of the type. | |
20824 | If the referenced type cannot be found an error is thrown. */ | |
20825 | ||
20826 | static struct die_info * | |
ff39bb5e | 20827 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
20828 | struct dwarf2_cu **ref_cu) |
20829 | { | |
20830 | ULONGEST signature = DW_SIGNATURE (attr); | |
20831 | struct signatured_type *sig_type; | |
20832 | struct die_info *die; | |
20833 | ||
20834 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
20835 | ||
a2ce51a0 | 20836 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
20837 | /* sig_type will be NULL if the signatured type is missing from |
20838 | the debug info. */ | |
20839 | if (sig_type == NULL) | |
20840 | { | |
20841 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20842 | " from DIE at 0x%x [in module %s]"), | |
20843 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20844 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20845 | } |
20846 | ||
20847 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
20848 | if (die == NULL) | |
20849 | { | |
20850 | dump_die_for_error (src_die); | |
20851 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20852 | " from DIE at 0x%x [in module %s]"), | |
20853 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 20854 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20855 | } |
20856 | ||
20857 | return die; | |
20858 | } | |
20859 | ||
20860 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
20861 | reading in and processing the type unit if necessary. */ | |
20862 | ||
20863 | static struct type * | |
20864 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
20865 | struct dwarf2_cu *cu) | |
20866 | { | |
20867 | struct signatured_type *sig_type; | |
20868 | struct dwarf2_cu *type_cu; | |
20869 | struct die_info *type_die; | |
20870 | struct type *type; | |
20871 | ||
a2ce51a0 | 20872 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
20873 | /* sig_type will be NULL if the signatured type is missing from |
20874 | the debug info. */ | |
20875 | if (sig_type == NULL) | |
20876 | { | |
20877 | complaint (&symfile_complaints, | |
20878 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20879 | " from DIE at 0x%x [in module %s]"), | |
20880 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20881 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20882 | return build_error_marker_type (cu, die); |
20883 | } | |
20884 | ||
20885 | /* If we already know the type we're done. */ | |
20886 | if (sig_type->type != NULL) | |
20887 | return sig_type->type; | |
20888 | ||
20889 | type_cu = cu; | |
20890 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
20891 | if (type_die != NULL) | |
20892 | { | |
20893 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
20894 | is created. This is important, for example, because for c++ classes | |
20895 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
20896 | type = read_type_die (type_die, type_cu); | |
20897 | if (type == NULL) | |
20898 | { | |
20899 | complaint (&symfile_complaints, | |
20900 | _("Dwarf Error: Cannot build signatured type %s" | |
20901 | " referenced from DIE at 0x%x [in module %s]"), | |
20902 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20903 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20904 | type = build_error_marker_type (cu, die); |
20905 | } | |
20906 | } | |
20907 | else | |
20908 | { | |
20909 | complaint (&symfile_complaints, | |
20910 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20911 | " from DIE at 0x%x [in module %s]"), | |
20912 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 20913 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20914 | type = build_error_marker_type (cu, die); |
20915 | } | |
20916 | sig_type->type = type; | |
20917 | ||
20918 | return type; | |
20919 | } | |
20920 | ||
20921 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
20922 | reading in and processing the type unit if necessary. */ | |
20923 | ||
20924 | static struct type * | |
ff39bb5e | 20925 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 20926 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
20927 | { |
20928 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 20929 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
20930 | { |
20931 | struct dwarf2_cu *type_cu = cu; | |
20932 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
20933 | ||
20934 | return read_type_die (type_die, type_cu); | |
20935 | } | |
20936 | else if (attr->form == DW_FORM_ref_sig8) | |
20937 | { | |
20938 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
20939 | } | |
20940 | else | |
20941 | { | |
20942 | complaint (&symfile_complaints, | |
20943 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
20944 | " at 0x%x [in module %s]"), | |
20945 | dwarf_form_name (attr->form), die->offset.sect_off, | |
4262abfb | 20946 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20947 | return build_error_marker_type (cu, die); |
20948 | } | |
348e048f DE |
20949 | } |
20950 | ||
e5fe5e75 | 20951 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
20952 | |
20953 | static void | |
e5fe5e75 | 20954 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 20955 | { |
52dc124a | 20956 | struct signatured_type *sig_type; |
348e048f | 20957 | |
f4dc4d17 DE |
20958 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
20959 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
20960 | ||
6721b2ec DE |
20961 | /* We have the per_cu, but we need the signatured_type. |
20962 | Fortunately this is an easy translation. */ | |
20963 | gdb_assert (per_cu->is_debug_types); | |
20964 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 20965 | |
6721b2ec | 20966 | gdb_assert (per_cu->cu == NULL); |
348e048f | 20967 | |
52dc124a | 20968 | read_signatured_type (sig_type); |
348e048f | 20969 | |
6721b2ec | 20970 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
20971 | } |
20972 | ||
dee91e82 DE |
20973 | /* die_reader_func for read_signatured_type. |
20974 | This is identical to load_full_comp_unit_reader, | |
20975 | but is kept separate for now. */ | |
348e048f DE |
20976 | |
20977 | static void | |
dee91e82 | 20978 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 20979 | const gdb_byte *info_ptr, |
dee91e82 DE |
20980 | struct die_info *comp_unit_die, |
20981 | int has_children, | |
20982 | void *data) | |
348e048f | 20983 | { |
dee91e82 | 20984 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 20985 | |
dee91e82 DE |
20986 | gdb_assert (cu->die_hash == NULL); |
20987 | cu->die_hash = | |
20988 | htab_create_alloc_ex (cu->header.length / 12, | |
20989 | die_hash, | |
20990 | die_eq, | |
20991 | NULL, | |
20992 | &cu->comp_unit_obstack, | |
20993 | hashtab_obstack_allocate, | |
20994 | dummy_obstack_deallocate); | |
348e048f | 20995 | |
dee91e82 DE |
20996 | if (has_children) |
20997 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
20998 | &info_ptr, comp_unit_die); | |
20999 | cu->dies = comp_unit_die; | |
21000 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
21001 | |
21002 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 21003 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 21004 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
21005 | or we won't be able to build types correctly. |
21006 | Similarly, if we do not read the producer, we can not apply | |
21007 | producer-specific interpretation. */ | |
95554aad | 21008 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 21009 | } |
348e048f | 21010 | |
3019eac3 DE |
21011 | /* Read in a signatured type and build its CU and DIEs. |
21012 | If the type is a stub for the real type in a DWO file, | |
21013 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
21014 | |
21015 | static void | |
21016 | read_signatured_type (struct signatured_type *sig_type) | |
21017 | { | |
21018 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 21019 | |
3019eac3 | 21020 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 21021 | gdb_assert (per_cu->cu == NULL); |
348e048f | 21022 | |
f4dc4d17 DE |
21023 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
21024 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 21025 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
21026 | } |
21027 | ||
c906108c SS |
21028 | /* Decode simple location descriptions. |
21029 | Given a pointer to a dwarf block that defines a location, compute | |
21030 | the location and return the value. | |
21031 | ||
4cecd739 DJ |
21032 | NOTE drow/2003-11-18: This function is called in two situations |
21033 | now: for the address of static or global variables (partial symbols | |
21034 | only) and for offsets into structures which are expected to be | |
21035 | (more or less) constant. The partial symbol case should go away, | |
21036 | and only the constant case should remain. That will let this | |
21037 | function complain more accurately. A few special modes are allowed | |
21038 | without complaint for global variables (for instance, global | |
21039 | register values and thread-local values). | |
c906108c SS |
21040 | |
21041 | A location description containing no operations indicates that the | |
4cecd739 | 21042 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
21043 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
21044 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
21045 | complaint. |
21046 | ||
21047 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
21048 | |
21049 | static CORE_ADDR | |
e7c27a73 | 21050 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 21051 | { |
e7c27a73 | 21052 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
21053 | size_t i; |
21054 | size_t size = blk->size; | |
d521ce57 | 21055 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
21056 | CORE_ADDR stack[64]; |
21057 | int stacki; | |
21058 | unsigned int bytes_read, unsnd; | |
21059 | gdb_byte op; | |
c906108c | 21060 | |
21ae7a4d JK |
21061 | i = 0; |
21062 | stacki = 0; | |
21063 | stack[stacki] = 0; | |
21064 | stack[++stacki] = 0; | |
21065 | ||
21066 | while (i < size) | |
21067 | { | |
21068 | op = data[i++]; | |
21069 | switch (op) | |
21070 | { | |
21071 | case DW_OP_lit0: | |
21072 | case DW_OP_lit1: | |
21073 | case DW_OP_lit2: | |
21074 | case DW_OP_lit3: | |
21075 | case DW_OP_lit4: | |
21076 | case DW_OP_lit5: | |
21077 | case DW_OP_lit6: | |
21078 | case DW_OP_lit7: | |
21079 | case DW_OP_lit8: | |
21080 | case DW_OP_lit9: | |
21081 | case DW_OP_lit10: | |
21082 | case DW_OP_lit11: | |
21083 | case DW_OP_lit12: | |
21084 | case DW_OP_lit13: | |
21085 | case DW_OP_lit14: | |
21086 | case DW_OP_lit15: | |
21087 | case DW_OP_lit16: | |
21088 | case DW_OP_lit17: | |
21089 | case DW_OP_lit18: | |
21090 | case DW_OP_lit19: | |
21091 | case DW_OP_lit20: | |
21092 | case DW_OP_lit21: | |
21093 | case DW_OP_lit22: | |
21094 | case DW_OP_lit23: | |
21095 | case DW_OP_lit24: | |
21096 | case DW_OP_lit25: | |
21097 | case DW_OP_lit26: | |
21098 | case DW_OP_lit27: | |
21099 | case DW_OP_lit28: | |
21100 | case DW_OP_lit29: | |
21101 | case DW_OP_lit30: | |
21102 | case DW_OP_lit31: | |
21103 | stack[++stacki] = op - DW_OP_lit0; | |
21104 | break; | |
f1bea926 | 21105 | |
21ae7a4d JK |
21106 | case DW_OP_reg0: |
21107 | case DW_OP_reg1: | |
21108 | case DW_OP_reg2: | |
21109 | case DW_OP_reg3: | |
21110 | case DW_OP_reg4: | |
21111 | case DW_OP_reg5: | |
21112 | case DW_OP_reg6: | |
21113 | case DW_OP_reg7: | |
21114 | case DW_OP_reg8: | |
21115 | case DW_OP_reg9: | |
21116 | case DW_OP_reg10: | |
21117 | case DW_OP_reg11: | |
21118 | case DW_OP_reg12: | |
21119 | case DW_OP_reg13: | |
21120 | case DW_OP_reg14: | |
21121 | case DW_OP_reg15: | |
21122 | case DW_OP_reg16: | |
21123 | case DW_OP_reg17: | |
21124 | case DW_OP_reg18: | |
21125 | case DW_OP_reg19: | |
21126 | case DW_OP_reg20: | |
21127 | case DW_OP_reg21: | |
21128 | case DW_OP_reg22: | |
21129 | case DW_OP_reg23: | |
21130 | case DW_OP_reg24: | |
21131 | case DW_OP_reg25: | |
21132 | case DW_OP_reg26: | |
21133 | case DW_OP_reg27: | |
21134 | case DW_OP_reg28: | |
21135 | case DW_OP_reg29: | |
21136 | case DW_OP_reg30: | |
21137 | case DW_OP_reg31: | |
21138 | stack[++stacki] = op - DW_OP_reg0; | |
21139 | if (i < size) | |
21140 | dwarf2_complex_location_expr_complaint (); | |
21141 | break; | |
c906108c | 21142 | |
21ae7a4d JK |
21143 | case DW_OP_regx: |
21144 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
21145 | i += bytes_read; | |
21146 | stack[++stacki] = unsnd; | |
21147 | if (i < size) | |
21148 | dwarf2_complex_location_expr_complaint (); | |
21149 | break; | |
c906108c | 21150 | |
21ae7a4d JK |
21151 | case DW_OP_addr: |
21152 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
21153 | cu, &bytes_read); | |
21154 | i += bytes_read; | |
21155 | break; | |
d53d4ac5 | 21156 | |
21ae7a4d JK |
21157 | case DW_OP_const1u: |
21158 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
21159 | i += 1; | |
21160 | break; | |
21161 | ||
21162 | case DW_OP_const1s: | |
21163 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
21164 | i += 1; | |
21165 | break; | |
21166 | ||
21167 | case DW_OP_const2u: | |
21168 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
21169 | i += 2; | |
21170 | break; | |
21171 | ||
21172 | case DW_OP_const2s: | |
21173 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
21174 | i += 2; | |
21175 | break; | |
d53d4ac5 | 21176 | |
21ae7a4d JK |
21177 | case DW_OP_const4u: |
21178 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
21179 | i += 4; | |
21180 | break; | |
21181 | ||
21182 | case DW_OP_const4s: | |
21183 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
21184 | i += 4; | |
21185 | break; | |
21186 | ||
585861ea JK |
21187 | case DW_OP_const8u: |
21188 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
21189 | i += 8; | |
21190 | break; | |
21191 | ||
21ae7a4d JK |
21192 | case DW_OP_constu: |
21193 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
21194 | &bytes_read); | |
21195 | i += bytes_read; | |
21196 | break; | |
21197 | ||
21198 | case DW_OP_consts: | |
21199 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
21200 | i += bytes_read; | |
21201 | break; | |
21202 | ||
21203 | case DW_OP_dup: | |
21204 | stack[stacki + 1] = stack[stacki]; | |
21205 | stacki++; | |
21206 | break; | |
21207 | ||
21208 | case DW_OP_plus: | |
21209 | stack[stacki - 1] += stack[stacki]; | |
21210 | stacki--; | |
21211 | break; | |
21212 | ||
21213 | case DW_OP_plus_uconst: | |
21214 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
21215 | &bytes_read); | |
21216 | i += bytes_read; | |
21217 | break; | |
21218 | ||
21219 | case DW_OP_minus: | |
21220 | stack[stacki - 1] -= stack[stacki]; | |
21221 | stacki--; | |
21222 | break; | |
21223 | ||
21224 | case DW_OP_deref: | |
21225 | /* If we're not the last op, then we definitely can't encode | |
21226 | this using GDB's address_class enum. This is valid for partial | |
21227 | global symbols, although the variable's address will be bogus | |
21228 | in the psymtab. */ | |
21229 | if (i < size) | |
21230 | dwarf2_complex_location_expr_complaint (); | |
21231 | break; | |
21232 | ||
21233 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 21234 | case DW_OP_form_tls_address: |
21ae7a4d JK |
21235 | /* The top of the stack has the offset from the beginning |
21236 | of the thread control block at which the variable is located. */ | |
21237 | /* Nothing should follow this operator, so the top of stack would | |
21238 | be returned. */ | |
21239 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
21240 | address will be bogus in the psymtab. Make it always at least |
21241 | non-zero to not look as a variable garbage collected by linker | |
21242 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
21243 | if (i < size) |
21244 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 21245 | stack[stacki]++; |
21ae7a4d JK |
21246 | break; |
21247 | ||
21248 | case DW_OP_GNU_uninit: | |
21249 | break; | |
21250 | ||
3019eac3 | 21251 | case DW_OP_GNU_addr_index: |
49f6c839 | 21252 | case DW_OP_GNU_const_index: |
3019eac3 DE |
21253 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
21254 | &bytes_read); | |
21255 | i += bytes_read; | |
21256 | break; | |
21257 | ||
21ae7a4d JK |
21258 | default: |
21259 | { | |
f39c6ffd | 21260 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
21261 | |
21262 | if (name) | |
21263 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
21264 | name); | |
21265 | else | |
21266 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
21267 | op); | |
21268 | } | |
21269 | ||
21270 | return (stack[stacki]); | |
d53d4ac5 | 21271 | } |
3c6e0cb3 | 21272 | |
21ae7a4d JK |
21273 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
21274 | outside of the allocated space. Also enforce minimum>0. */ | |
21275 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
21276 | { | |
21277 | complaint (&symfile_complaints, | |
21278 | _("location description stack overflow")); | |
21279 | return 0; | |
21280 | } | |
21281 | ||
21282 | if (stacki <= 0) | |
21283 | { | |
21284 | complaint (&symfile_complaints, | |
21285 | _("location description stack underflow")); | |
21286 | return 0; | |
21287 | } | |
21288 | } | |
21289 | return (stack[stacki]); | |
c906108c SS |
21290 | } |
21291 | ||
21292 | /* memory allocation interface */ | |
21293 | ||
c906108c | 21294 | static struct dwarf_block * |
7b5a2f43 | 21295 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 21296 | { |
8d749320 | 21297 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
21298 | } |
21299 | ||
c906108c | 21300 | static struct die_info * |
b60c80d6 | 21301 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
21302 | { |
21303 | struct die_info *die; | |
b60c80d6 DJ |
21304 | size_t size = sizeof (struct die_info); |
21305 | ||
21306 | if (num_attrs > 1) | |
21307 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 21308 | |
b60c80d6 | 21309 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
21310 | memset (die, 0, sizeof (struct die_info)); |
21311 | return (die); | |
21312 | } | |
2e276125 JB |
21313 | |
21314 | \f | |
21315 | /* Macro support. */ | |
21316 | ||
233d95b5 JK |
21317 | /* Return file name relative to the compilation directory of file number I in |
21318 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 21319 | responsible for freeing it. */ |
233d95b5 | 21320 | |
2e276125 | 21321 | static char * |
233d95b5 | 21322 | file_file_name (int file, struct line_header *lh) |
2e276125 | 21323 | { |
6a83a1e6 EZ |
21324 | /* Is the file number a valid index into the line header's file name |
21325 | table? Remember that file numbers start with one, not zero. */ | |
21326 | if (1 <= file && file <= lh->num_file_names) | |
21327 | { | |
21328 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 21329 | |
afa6c9ab SL |
21330 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0 |
21331 | || lh->include_dirs == NULL) | |
6a83a1e6 | 21332 | return xstrdup (fe->name); |
233d95b5 | 21333 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
b36cec19 | 21334 | fe->name, (char *) NULL); |
6a83a1e6 | 21335 | } |
2e276125 JB |
21336 | else |
21337 | { | |
6a83a1e6 EZ |
21338 | /* The compiler produced a bogus file number. We can at least |
21339 | record the macro definitions made in the file, even if we | |
21340 | won't be able to find the file by name. */ | |
21341 | char fake_name[80]; | |
9a619af0 | 21342 | |
8c042590 PM |
21343 | xsnprintf (fake_name, sizeof (fake_name), |
21344 | "<bad macro file number %d>", file); | |
2e276125 | 21345 | |
6e70227d | 21346 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
21347 | _("bad file number in macro information (%d)"), |
21348 | file); | |
2e276125 | 21349 | |
6a83a1e6 | 21350 | return xstrdup (fake_name); |
2e276125 JB |
21351 | } |
21352 | } | |
21353 | ||
233d95b5 JK |
21354 | /* Return the full name of file number I in *LH's file name table. |
21355 | Use COMP_DIR as the name of the current directory of the | |
21356 | compilation. The result is allocated using xmalloc; the caller is | |
21357 | responsible for freeing it. */ | |
21358 | static char * | |
21359 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
21360 | { | |
21361 | /* Is the file number a valid index into the line header's file name | |
21362 | table? Remember that file numbers start with one, not zero. */ | |
21363 | if (1 <= file && file <= lh->num_file_names) | |
21364 | { | |
21365 | char *relative = file_file_name (file, lh); | |
21366 | ||
21367 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
21368 | return relative; | |
b36cec19 PA |
21369 | return reconcat (relative, comp_dir, SLASH_STRING, |
21370 | relative, (char *) NULL); | |
233d95b5 JK |
21371 | } |
21372 | else | |
21373 | return file_file_name (file, lh); | |
21374 | } | |
21375 | ||
2e276125 JB |
21376 | |
21377 | static struct macro_source_file * | |
21378 | macro_start_file (int file, int line, | |
21379 | struct macro_source_file *current_file, | |
43f3e411 | 21380 | struct line_header *lh) |
2e276125 | 21381 | { |
233d95b5 JK |
21382 | /* File name relative to the compilation directory of this source file. */ |
21383 | char *file_name = file_file_name (file, lh); | |
2e276125 | 21384 | |
2e276125 | 21385 | if (! current_file) |
abc9d0dc | 21386 | { |
fc474241 DE |
21387 | /* Note: We don't create a macro table for this compilation unit |
21388 | at all until we actually get a filename. */ | |
43f3e411 | 21389 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 21390 | |
abc9d0dc TT |
21391 | /* If we have no current file, then this must be the start_file |
21392 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
21393 | current_file = macro_set_main (macro_table, file_name); |
21394 | macro_define_special (macro_table); | |
abc9d0dc | 21395 | } |
2e276125 | 21396 | else |
233d95b5 | 21397 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 21398 | |
233d95b5 | 21399 | xfree (file_name); |
6e70227d | 21400 | |
2e276125 JB |
21401 | return current_file; |
21402 | } | |
21403 | ||
21404 | ||
21405 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
21406 | followed by a null byte. */ | |
21407 | static char * | |
21408 | copy_string (const char *buf, int len) | |
21409 | { | |
224c3ddb | 21410 | char *s = (char *) xmalloc (len + 1); |
9a619af0 | 21411 | |
2e276125 JB |
21412 | memcpy (s, buf, len); |
21413 | s[len] = '\0'; | |
2e276125 JB |
21414 | return s; |
21415 | } | |
21416 | ||
21417 | ||
21418 | static const char * | |
21419 | consume_improper_spaces (const char *p, const char *body) | |
21420 | { | |
21421 | if (*p == ' ') | |
21422 | { | |
4d3c2250 | 21423 | complaint (&symfile_complaints, |
3e43a32a MS |
21424 | _("macro definition contains spaces " |
21425 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 21426 | body); |
2e276125 JB |
21427 | |
21428 | while (*p == ' ') | |
21429 | p++; | |
21430 | } | |
21431 | ||
21432 | return p; | |
21433 | } | |
21434 | ||
21435 | ||
21436 | static void | |
21437 | parse_macro_definition (struct macro_source_file *file, int line, | |
21438 | const char *body) | |
21439 | { | |
21440 | const char *p; | |
21441 | ||
21442 | /* The body string takes one of two forms. For object-like macro | |
21443 | definitions, it should be: | |
21444 | ||
21445 | <macro name> " " <definition> | |
21446 | ||
21447 | For function-like macro definitions, it should be: | |
21448 | ||
21449 | <macro name> "() " <definition> | |
21450 | or | |
21451 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
21452 | ||
21453 | Spaces may appear only where explicitly indicated, and in the | |
21454 | <definition>. | |
21455 | ||
21456 | The Dwarf 2 spec says that an object-like macro's name is always | |
21457 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 21458 | the space when the macro's definition is the empty string. |
2e276125 JB |
21459 | |
21460 | The Dwarf 2 spec says that there should be no spaces between the | |
21461 | formal arguments in a function-like macro's formal argument list, | |
21462 | but versions of GCC around March 2002 include spaces after the | |
21463 | commas. */ | |
21464 | ||
21465 | ||
21466 | /* Find the extent of the macro name. The macro name is terminated | |
21467 | by either a space or null character (for an object-like macro) or | |
21468 | an opening paren (for a function-like macro). */ | |
21469 | for (p = body; *p; p++) | |
21470 | if (*p == ' ' || *p == '(') | |
21471 | break; | |
21472 | ||
21473 | if (*p == ' ' || *p == '\0') | |
21474 | { | |
21475 | /* It's an object-like macro. */ | |
21476 | int name_len = p - body; | |
21477 | char *name = copy_string (body, name_len); | |
21478 | const char *replacement; | |
21479 | ||
21480 | if (*p == ' ') | |
21481 | replacement = body + name_len + 1; | |
21482 | else | |
21483 | { | |
4d3c2250 | 21484 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21485 | replacement = body + name_len; |
21486 | } | |
6e70227d | 21487 | |
2e276125 JB |
21488 | macro_define_object (file, line, name, replacement); |
21489 | ||
21490 | xfree (name); | |
21491 | } | |
21492 | else if (*p == '(') | |
21493 | { | |
21494 | /* It's a function-like macro. */ | |
21495 | char *name = copy_string (body, p - body); | |
21496 | int argc = 0; | |
21497 | int argv_size = 1; | |
8d749320 | 21498 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
21499 | |
21500 | p++; | |
21501 | ||
21502 | p = consume_improper_spaces (p, body); | |
21503 | ||
21504 | /* Parse the formal argument list. */ | |
21505 | while (*p && *p != ')') | |
21506 | { | |
21507 | /* Find the extent of the current argument name. */ | |
21508 | const char *arg_start = p; | |
21509 | ||
21510 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
21511 | p++; | |
21512 | ||
21513 | if (! *p || p == arg_start) | |
4d3c2250 | 21514 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21515 | else |
21516 | { | |
21517 | /* Make sure argv has room for the new argument. */ | |
21518 | if (argc >= argv_size) | |
21519 | { | |
21520 | argv_size *= 2; | |
224c3ddb | 21521 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
21522 | } |
21523 | ||
21524 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
21525 | } | |
21526 | ||
21527 | p = consume_improper_spaces (p, body); | |
21528 | ||
21529 | /* Consume the comma, if present. */ | |
21530 | if (*p == ',') | |
21531 | { | |
21532 | p++; | |
21533 | ||
21534 | p = consume_improper_spaces (p, body); | |
21535 | } | |
21536 | } | |
21537 | ||
21538 | if (*p == ')') | |
21539 | { | |
21540 | p++; | |
21541 | ||
21542 | if (*p == ' ') | |
21543 | /* Perfectly formed definition, no complaints. */ | |
21544 | macro_define_function (file, line, name, | |
6e70227d | 21545 | argc, (const char **) argv, |
2e276125 JB |
21546 | p + 1); |
21547 | else if (*p == '\0') | |
21548 | { | |
21549 | /* Complain, but do define it. */ | |
4d3c2250 | 21550 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 21551 | macro_define_function (file, line, name, |
6e70227d | 21552 | argc, (const char **) argv, |
2e276125 JB |
21553 | p); |
21554 | } | |
21555 | else | |
21556 | /* Just complain. */ | |
4d3c2250 | 21557 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21558 | } |
21559 | else | |
21560 | /* Just complain. */ | |
4d3c2250 | 21561 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21562 | |
21563 | xfree (name); | |
21564 | { | |
21565 | int i; | |
21566 | ||
21567 | for (i = 0; i < argc; i++) | |
21568 | xfree (argv[i]); | |
21569 | } | |
21570 | xfree (argv); | |
21571 | } | |
21572 | else | |
4d3c2250 | 21573 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21574 | } |
21575 | ||
cf2c3c16 TT |
21576 | /* Skip some bytes from BYTES according to the form given in FORM. |
21577 | Returns the new pointer. */ | |
2e276125 | 21578 | |
d521ce57 TT |
21579 | static const gdb_byte * |
21580 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
21581 | enum dwarf_form form, |
21582 | unsigned int offset_size, | |
21583 | struct dwarf2_section_info *section) | |
2e276125 | 21584 | { |
cf2c3c16 | 21585 | unsigned int bytes_read; |
2e276125 | 21586 | |
cf2c3c16 | 21587 | switch (form) |
2e276125 | 21588 | { |
cf2c3c16 TT |
21589 | case DW_FORM_data1: |
21590 | case DW_FORM_flag: | |
21591 | ++bytes; | |
21592 | break; | |
21593 | ||
21594 | case DW_FORM_data2: | |
21595 | bytes += 2; | |
21596 | break; | |
21597 | ||
21598 | case DW_FORM_data4: | |
21599 | bytes += 4; | |
21600 | break; | |
21601 | ||
21602 | case DW_FORM_data8: | |
21603 | bytes += 8; | |
21604 | break; | |
21605 | ||
21606 | case DW_FORM_string: | |
21607 | read_direct_string (abfd, bytes, &bytes_read); | |
21608 | bytes += bytes_read; | |
21609 | break; | |
21610 | ||
21611 | case DW_FORM_sec_offset: | |
21612 | case DW_FORM_strp: | |
36586728 | 21613 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
21614 | bytes += offset_size; |
21615 | break; | |
21616 | ||
21617 | case DW_FORM_block: | |
21618 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
21619 | bytes += bytes_read; | |
21620 | break; | |
21621 | ||
21622 | case DW_FORM_block1: | |
21623 | bytes += 1 + read_1_byte (abfd, bytes); | |
21624 | break; | |
21625 | case DW_FORM_block2: | |
21626 | bytes += 2 + read_2_bytes (abfd, bytes); | |
21627 | break; | |
21628 | case DW_FORM_block4: | |
21629 | bytes += 4 + read_4_bytes (abfd, bytes); | |
21630 | break; | |
21631 | ||
21632 | case DW_FORM_sdata: | |
21633 | case DW_FORM_udata: | |
3019eac3 DE |
21634 | case DW_FORM_GNU_addr_index: |
21635 | case DW_FORM_GNU_str_index: | |
d521ce57 | 21636 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
21637 | if (bytes == NULL) |
21638 | { | |
21639 | dwarf2_section_buffer_overflow_complaint (section); | |
21640 | return NULL; | |
21641 | } | |
cf2c3c16 TT |
21642 | break; |
21643 | ||
21644 | default: | |
21645 | { | |
21646 | complain: | |
21647 | complaint (&symfile_complaints, | |
21648 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 21649 | form, get_section_name (section)); |
cf2c3c16 TT |
21650 | return NULL; |
21651 | } | |
2e276125 JB |
21652 | } |
21653 | ||
cf2c3c16 TT |
21654 | return bytes; |
21655 | } | |
757a13d0 | 21656 | |
cf2c3c16 TT |
21657 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
21658 | opcode. Returns an updated pointer to the macro data buffer; or, | |
21659 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 21660 | |
d521ce57 | 21661 | static const gdb_byte * |
cf2c3c16 | 21662 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
21663 | const gdb_byte **opcode_definitions, |
21664 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
21665 | bfd *abfd, |
21666 | unsigned int offset_size, | |
21667 | struct dwarf2_section_info *section) | |
21668 | { | |
21669 | unsigned int bytes_read, i; | |
21670 | unsigned long arg; | |
d521ce57 | 21671 | const gdb_byte *defn; |
2e276125 | 21672 | |
cf2c3c16 | 21673 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 21674 | { |
cf2c3c16 TT |
21675 | complaint (&symfile_complaints, |
21676 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
21677 | opcode); | |
21678 | return NULL; | |
21679 | } | |
2e276125 | 21680 | |
cf2c3c16 TT |
21681 | defn = opcode_definitions[opcode]; |
21682 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
21683 | defn += bytes_read; | |
2e276125 | 21684 | |
cf2c3c16 TT |
21685 | for (i = 0; i < arg; ++i) |
21686 | { | |
aead7601 SM |
21687 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
21688 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 21689 | section); |
cf2c3c16 TT |
21690 | if (mac_ptr == NULL) |
21691 | { | |
21692 | /* skip_form_bytes already issued the complaint. */ | |
21693 | return NULL; | |
21694 | } | |
21695 | } | |
757a13d0 | 21696 | |
cf2c3c16 TT |
21697 | return mac_ptr; |
21698 | } | |
757a13d0 | 21699 | |
cf2c3c16 TT |
21700 | /* A helper function which parses the header of a macro section. |
21701 | If the macro section is the extended (for now called "GNU") type, | |
21702 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
21703 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 21704 | |
d521ce57 TT |
21705 | static const gdb_byte * |
21706 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 21707 | bfd *abfd, |
d521ce57 | 21708 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
21709 | unsigned int *offset_size, |
21710 | int section_is_gnu) | |
21711 | { | |
21712 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 21713 | |
cf2c3c16 TT |
21714 | if (section_is_gnu) |
21715 | { | |
21716 | unsigned int version, flags; | |
757a13d0 | 21717 | |
cf2c3c16 | 21718 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 21719 | if (version != 4 && version != 5) |
cf2c3c16 TT |
21720 | { |
21721 | complaint (&symfile_complaints, | |
21722 | _("unrecognized version `%d' in .debug_macro section"), | |
21723 | version); | |
21724 | return NULL; | |
21725 | } | |
21726 | mac_ptr += 2; | |
757a13d0 | 21727 | |
cf2c3c16 TT |
21728 | flags = read_1_byte (abfd, mac_ptr); |
21729 | ++mac_ptr; | |
21730 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 21731 | |
cf2c3c16 TT |
21732 | if ((flags & 2) != 0) |
21733 | /* We don't need the line table offset. */ | |
21734 | mac_ptr += *offset_size; | |
757a13d0 | 21735 | |
cf2c3c16 TT |
21736 | /* Vendor opcode descriptions. */ |
21737 | if ((flags & 4) != 0) | |
21738 | { | |
21739 | unsigned int i, count; | |
757a13d0 | 21740 | |
cf2c3c16 TT |
21741 | count = read_1_byte (abfd, mac_ptr); |
21742 | ++mac_ptr; | |
21743 | for (i = 0; i < count; ++i) | |
21744 | { | |
21745 | unsigned int opcode, bytes_read; | |
21746 | unsigned long arg; | |
21747 | ||
21748 | opcode = read_1_byte (abfd, mac_ptr); | |
21749 | ++mac_ptr; | |
21750 | opcode_definitions[opcode] = mac_ptr; | |
21751 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21752 | mac_ptr += bytes_read; | |
21753 | mac_ptr += arg; | |
21754 | } | |
757a13d0 | 21755 | } |
cf2c3c16 | 21756 | } |
757a13d0 | 21757 | |
cf2c3c16 TT |
21758 | return mac_ptr; |
21759 | } | |
757a13d0 | 21760 | |
cf2c3c16 | 21761 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 21762 | including DW_MACRO_import. */ |
cf2c3c16 TT |
21763 | |
21764 | static void | |
d521ce57 TT |
21765 | dwarf_decode_macro_bytes (bfd *abfd, |
21766 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 21767 | struct macro_source_file *current_file, |
43f3e411 | 21768 | struct line_header *lh, |
cf2c3c16 | 21769 | struct dwarf2_section_info *section, |
36586728 | 21770 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 21771 | unsigned int offset_size, |
8fc3fc34 | 21772 | htab_t include_hash) |
cf2c3c16 | 21773 | { |
4d663531 | 21774 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
21775 | enum dwarf_macro_record_type macinfo_type; |
21776 | int at_commandline; | |
d521ce57 | 21777 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 21778 | |
cf2c3c16 TT |
21779 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
21780 | &offset_size, section_is_gnu); | |
21781 | if (mac_ptr == NULL) | |
21782 | { | |
21783 | /* We already issued a complaint. */ | |
21784 | return; | |
21785 | } | |
757a13d0 JK |
21786 | |
21787 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
21788 | GDB is still reading the definitions from command line. First | |
21789 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
21790 | to create CURRENT_FILE for the main source holding also the command line | |
21791 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
21792 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
21793 | ||
21794 | at_commandline = 1; | |
21795 | ||
21796 | do | |
21797 | { | |
21798 | /* Do we at least have room for a macinfo type byte? */ | |
21799 | if (mac_ptr >= mac_end) | |
21800 | { | |
f664829e | 21801 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
21802 | break; |
21803 | } | |
21804 | ||
aead7601 | 21805 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
21806 | mac_ptr++; |
21807 | ||
cf2c3c16 TT |
21808 | /* Note that we rely on the fact that the corresponding GNU and |
21809 | DWARF constants are the same. */ | |
757a13d0 JK |
21810 | switch (macinfo_type) |
21811 | { | |
21812 | /* A zero macinfo type indicates the end of the macro | |
21813 | information. */ | |
21814 | case 0: | |
21815 | break; | |
2e276125 | 21816 | |
0af92d60 JK |
21817 | case DW_MACRO_define: |
21818 | case DW_MACRO_undef: | |
21819 | case DW_MACRO_define_strp: | |
21820 | case DW_MACRO_undef_strp: | |
21821 | case DW_MACRO_define_sup: | |
21822 | case DW_MACRO_undef_sup: | |
2e276125 | 21823 | { |
891d2f0b | 21824 | unsigned int bytes_read; |
2e276125 | 21825 | int line; |
d521ce57 | 21826 | const char *body; |
cf2c3c16 | 21827 | int is_define; |
2e276125 | 21828 | |
cf2c3c16 TT |
21829 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
21830 | mac_ptr += bytes_read; | |
21831 | ||
0af92d60 JK |
21832 | if (macinfo_type == DW_MACRO_define |
21833 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
21834 | { |
21835 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
21836 | mac_ptr += bytes_read; | |
21837 | } | |
21838 | else | |
21839 | { | |
21840 | LONGEST str_offset; | |
21841 | ||
21842 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21843 | mac_ptr += offset_size; | |
2e276125 | 21844 | |
0af92d60 JK |
21845 | if (macinfo_type == DW_MACRO_define_sup |
21846 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 21847 | || section_is_dwz) |
36586728 TT |
21848 | { |
21849 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21850 | ||
21851 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
21852 | } | |
21853 | else | |
21854 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
21855 | } |
21856 | ||
0af92d60 JK |
21857 | is_define = (macinfo_type == DW_MACRO_define |
21858 | || macinfo_type == DW_MACRO_define_strp | |
21859 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 21860 | if (! current_file) |
757a13d0 JK |
21861 | { |
21862 | /* DWARF violation as no main source is present. */ | |
21863 | complaint (&symfile_complaints, | |
21864 | _("debug info with no main source gives macro %s " | |
21865 | "on line %d: %s"), | |
cf2c3c16 TT |
21866 | is_define ? _("definition") : _("undefinition"), |
21867 | line, body); | |
757a13d0 JK |
21868 | break; |
21869 | } | |
3e43a32a MS |
21870 | if ((line == 0 && !at_commandline) |
21871 | || (line != 0 && at_commandline)) | |
4d3c2250 | 21872 | complaint (&symfile_complaints, |
757a13d0 JK |
21873 | _("debug info gives %s macro %s with %s line %d: %s"), |
21874 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 21875 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
21876 | line == 0 ? _("zero") : _("non-zero"), line, body); |
21877 | ||
cf2c3c16 | 21878 | if (is_define) |
757a13d0 | 21879 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
21880 | else |
21881 | { | |
0af92d60 JK |
21882 | gdb_assert (macinfo_type == DW_MACRO_undef |
21883 | || macinfo_type == DW_MACRO_undef_strp | |
21884 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
21885 | macro_undef (current_file, line, body); |
21886 | } | |
2e276125 JB |
21887 | } |
21888 | break; | |
21889 | ||
0af92d60 | 21890 | case DW_MACRO_start_file: |
2e276125 | 21891 | { |
891d2f0b | 21892 | unsigned int bytes_read; |
2e276125 JB |
21893 | int line, file; |
21894 | ||
21895 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21896 | mac_ptr += bytes_read; | |
21897 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21898 | mac_ptr += bytes_read; | |
21899 | ||
3e43a32a MS |
21900 | if ((line == 0 && !at_commandline) |
21901 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
21902 | complaint (&symfile_complaints, |
21903 | _("debug info gives source %d included " | |
21904 | "from %s at %s line %d"), | |
21905 | file, at_commandline ? _("command-line") : _("file"), | |
21906 | line == 0 ? _("zero") : _("non-zero"), line); | |
21907 | ||
21908 | if (at_commandline) | |
21909 | { | |
0af92d60 | 21910 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 21911 | pass one. */ |
757a13d0 JK |
21912 | at_commandline = 0; |
21913 | } | |
21914 | else | |
43f3e411 | 21915 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
21916 | } |
21917 | break; | |
21918 | ||
0af92d60 | 21919 | case DW_MACRO_end_file: |
2e276125 | 21920 | if (! current_file) |
4d3c2250 | 21921 | complaint (&symfile_complaints, |
3e43a32a MS |
21922 | _("macro debug info has an unmatched " |
21923 | "`close_file' directive")); | |
2e276125 JB |
21924 | else |
21925 | { | |
21926 | current_file = current_file->included_by; | |
21927 | if (! current_file) | |
21928 | { | |
cf2c3c16 | 21929 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
21930 | |
21931 | /* GCC circa March 2002 doesn't produce the zero | |
21932 | type byte marking the end of the compilation | |
21933 | unit. Complain if it's not there, but exit no | |
21934 | matter what. */ | |
21935 | ||
21936 | /* Do we at least have room for a macinfo type byte? */ | |
21937 | if (mac_ptr >= mac_end) | |
21938 | { | |
f664829e | 21939 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
21940 | return; |
21941 | } | |
21942 | ||
21943 | /* We don't increment mac_ptr here, so this is just | |
21944 | a look-ahead. */ | |
aead7601 SM |
21945 | next_type |
21946 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
21947 | mac_ptr); | |
2e276125 | 21948 | if (next_type != 0) |
4d3c2250 | 21949 | complaint (&symfile_complaints, |
3e43a32a MS |
21950 | _("no terminating 0-type entry for " |
21951 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
21952 | |
21953 | return; | |
21954 | } | |
21955 | } | |
21956 | break; | |
21957 | ||
0af92d60 JK |
21958 | case DW_MACRO_import: |
21959 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
21960 | { |
21961 | LONGEST offset; | |
8fc3fc34 | 21962 | void **slot; |
a036ba48 TT |
21963 | bfd *include_bfd = abfd; |
21964 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 21965 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 21966 | int is_dwz = section_is_dwz; |
d521ce57 | 21967 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
21968 | |
21969 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21970 | mac_ptr += offset_size; | |
21971 | ||
0af92d60 | 21972 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 TT |
21973 | { |
21974 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21975 | ||
4d663531 | 21976 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 21977 | |
a036ba48 | 21978 | include_section = &dwz->macro; |
a32a8923 | 21979 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
21980 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
21981 | is_dwz = 1; | |
21982 | } | |
21983 | ||
21984 | new_mac_ptr = include_section->buffer + offset; | |
21985 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
21986 | ||
8fc3fc34 TT |
21987 | if (*slot != NULL) |
21988 | { | |
21989 | /* This has actually happened; see | |
21990 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
21991 | complaint (&symfile_complaints, | |
0af92d60 | 21992 | _("recursive DW_MACRO_import in " |
8fc3fc34 TT |
21993 | ".debug_macro section")); |
21994 | } | |
21995 | else | |
21996 | { | |
d521ce57 | 21997 | *slot = (void *) new_mac_ptr; |
36586728 | 21998 | |
a036ba48 | 21999 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
43f3e411 | 22000 | include_mac_end, current_file, lh, |
36586728 | 22001 | section, section_is_gnu, is_dwz, |
4d663531 | 22002 | offset_size, include_hash); |
8fc3fc34 | 22003 | |
d521ce57 | 22004 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 22005 | } |
cf2c3c16 TT |
22006 | } |
22007 | break; | |
22008 | ||
2e276125 | 22009 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
22010 | if (!section_is_gnu) |
22011 | { | |
22012 | unsigned int bytes_read; | |
2e276125 | 22013 | |
ac298888 TT |
22014 | /* This reads the constant, but since we don't recognize |
22015 | any vendor extensions, we ignore it. */ | |
22016 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
22017 | mac_ptr += bytes_read; |
22018 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
22019 | mac_ptr += bytes_read; | |
2e276125 | 22020 | |
cf2c3c16 TT |
22021 | /* We don't recognize any vendor extensions. */ |
22022 | break; | |
22023 | } | |
22024 | /* FALLTHROUGH */ | |
22025 | ||
22026 | default: | |
22027 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 22028 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
22029 | section); |
22030 | if (mac_ptr == NULL) | |
22031 | return; | |
22032 | break; | |
2e276125 | 22033 | } |
757a13d0 | 22034 | } while (macinfo_type != 0); |
2e276125 | 22035 | } |
8e19ed76 | 22036 | |
cf2c3c16 | 22037 | static void |
09262596 | 22038 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 22039 | int section_is_gnu) |
cf2c3c16 | 22040 | { |
bb5ed363 | 22041 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
22042 | struct line_header *lh = cu->line_header; |
22043 | bfd *abfd; | |
d521ce57 | 22044 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
22045 | struct macro_source_file *current_file = 0; |
22046 | enum dwarf_macro_record_type macinfo_type; | |
22047 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 22048 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 22049 | struct cleanup *cleanup; |
8fc3fc34 | 22050 | void **slot; |
09262596 DE |
22051 | struct dwarf2_section_info *section; |
22052 | const char *section_name; | |
22053 | ||
22054 | if (cu->dwo_unit != NULL) | |
22055 | { | |
22056 | if (section_is_gnu) | |
22057 | { | |
22058 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
22059 | section_name = ".debug_macro.dwo"; | |
22060 | } | |
22061 | else | |
22062 | { | |
22063 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
22064 | section_name = ".debug_macinfo.dwo"; | |
22065 | } | |
22066 | } | |
22067 | else | |
22068 | { | |
22069 | if (section_is_gnu) | |
22070 | { | |
22071 | section = &dwarf2_per_objfile->macro; | |
22072 | section_name = ".debug_macro"; | |
22073 | } | |
22074 | else | |
22075 | { | |
22076 | section = &dwarf2_per_objfile->macinfo; | |
22077 | section_name = ".debug_macinfo"; | |
22078 | } | |
22079 | } | |
cf2c3c16 | 22080 | |
bb5ed363 | 22081 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
22082 | if (section->buffer == NULL) |
22083 | { | |
fceca515 | 22084 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
22085 | return; |
22086 | } | |
a32a8923 | 22087 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
22088 | |
22089 | /* First pass: Find the name of the base filename. | |
22090 | This filename is needed in order to process all macros whose definition | |
22091 | (or undefinition) comes from the command line. These macros are defined | |
22092 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
22093 | associated to the base file. | |
22094 | ||
22095 | To determine the base file name, we scan the macro definitions until we | |
22096 | reach the first DW_MACINFO_start_file entry. We then initialize | |
22097 | CURRENT_FILE accordingly so that any macro definition found before the | |
22098 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
22099 | ||
22100 | mac_ptr = section->buffer + offset; | |
22101 | mac_end = section->buffer + section->size; | |
22102 | ||
22103 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
22104 | &offset_size, section_is_gnu); | |
22105 | if (mac_ptr == NULL) | |
22106 | { | |
22107 | /* We already issued a complaint. */ | |
22108 | return; | |
22109 | } | |
22110 | ||
22111 | do | |
22112 | { | |
22113 | /* Do we at least have room for a macinfo type byte? */ | |
22114 | if (mac_ptr >= mac_end) | |
22115 | { | |
22116 | /* Complaint is printed during the second pass as GDB will probably | |
22117 | stop the first pass earlier upon finding | |
22118 | DW_MACINFO_start_file. */ | |
22119 | break; | |
22120 | } | |
22121 | ||
aead7601 | 22122 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
22123 | mac_ptr++; |
22124 | ||
22125 | /* Note that we rely on the fact that the corresponding GNU and | |
22126 | DWARF constants are the same. */ | |
22127 | switch (macinfo_type) | |
22128 | { | |
22129 | /* A zero macinfo type indicates the end of the macro | |
22130 | information. */ | |
22131 | case 0: | |
22132 | break; | |
22133 | ||
0af92d60 JK |
22134 | case DW_MACRO_define: |
22135 | case DW_MACRO_undef: | |
cf2c3c16 TT |
22136 | /* Only skip the data by MAC_PTR. */ |
22137 | { | |
22138 | unsigned int bytes_read; | |
22139 | ||
22140 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22141 | mac_ptr += bytes_read; | |
22142 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
22143 | mac_ptr += bytes_read; | |
22144 | } | |
22145 | break; | |
22146 | ||
0af92d60 | 22147 | case DW_MACRO_start_file: |
cf2c3c16 TT |
22148 | { |
22149 | unsigned int bytes_read; | |
22150 | int line, file; | |
22151 | ||
22152 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22153 | mac_ptr += bytes_read; | |
22154 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22155 | mac_ptr += bytes_read; | |
22156 | ||
43f3e411 | 22157 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
22158 | } |
22159 | break; | |
22160 | ||
0af92d60 | 22161 | case DW_MACRO_end_file: |
cf2c3c16 TT |
22162 | /* No data to skip by MAC_PTR. */ |
22163 | break; | |
22164 | ||
0af92d60 JK |
22165 | case DW_MACRO_define_strp: |
22166 | case DW_MACRO_undef_strp: | |
22167 | case DW_MACRO_define_sup: | |
22168 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
22169 | { |
22170 | unsigned int bytes_read; | |
22171 | ||
22172 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22173 | mac_ptr += bytes_read; | |
22174 | mac_ptr += offset_size; | |
22175 | } | |
22176 | break; | |
22177 | ||
0af92d60 JK |
22178 | case DW_MACRO_import: |
22179 | case DW_MACRO_import_sup: | |
cf2c3c16 | 22180 | /* Note that, according to the spec, a transparent include |
0af92d60 | 22181 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
22182 | skip this opcode. */ |
22183 | mac_ptr += offset_size; | |
22184 | break; | |
22185 | ||
22186 | case DW_MACINFO_vendor_ext: | |
22187 | /* Only skip the data by MAC_PTR. */ | |
22188 | if (!section_is_gnu) | |
22189 | { | |
22190 | unsigned int bytes_read; | |
22191 | ||
22192 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22193 | mac_ptr += bytes_read; | |
22194 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
22195 | mac_ptr += bytes_read; | |
22196 | } | |
22197 | /* FALLTHROUGH */ | |
22198 | ||
22199 | default: | |
22200 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 22201 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
22202 | section); |
22203 | if (mac_ptr == NULL) | |
22204 | return; | |
22205 | break; | |
22206 | } | |
22207 | } while (macinfo_type != 0 && current_file == NULL); | |
22208 | ||
22209 | /* Second pass: Process all entries. | |
22210 | ||
22211 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
22212 | command-line macro definitions/undefinitions. This flag is unset when we | |
22213 | reach the first DW_MACINFO_start_file entry. */ | |
22214 | ||
fc4007c9 TT |
22215 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
22216 | htab_eq_pointer, | |
22217 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 22218 | mac_ptr = section->buffer + offset; |
fc4007c9 | 22219 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 22220 | *slot = (void *) mac_ptr; |
8fc3fc34 | 22221 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
43f3e411 | 22222 | current_file, lh, section, |
fc4007c9 TT |
22223 | section_is_gnu, 0, offset_size, |
22224 | include_hash.get ()); | |
cf2c3c16 TT |
22225 | } |
22226 | ||
8e19ed76 | 22227 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 22228 | if so return true else false. */ |
380bca97 | 22229 | |
8e19ed76 | 22230 | static int |
6e5a29e1 | 22231 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
22232 | { |
22233 | return (attr == NULL ? 0 : | |
22234 | attr->form == DW_FORM_block1 | |
22235 | || attr->form == DW_FORM_block2 | |
22236 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
22237 | || attr->form == DW_FORM_block |
22238 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 22239 | } |
4c2df51b | 22240 | |
c6a0999f JB |
22241 | /* Return non-zero if ATTR's value is a section offset --- classes |
22242 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
22243 | You may use DW_UNSND (attr) to retrieve such offsets. | |
22244 | ||
22245 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
22246 | may have a value that belongs to more than one of these classes; it | |
22247 | would be ambiguous if we did, because we use the same forms for all | |
22248 | of them. */ | |
380bca97 | 22249 | |
3690dd37 | 22250 | static int |
6e5a29e1 | 22251 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
22252 | { |
22253 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
22254 | || attr->form == DW_FORM_data8 |
22255 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
22256 | } |
22257 | ||
3690dd37 JB |
22258 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
22259 | zero otherwise. When this function returns true, you can apply | |
22260 | dwarf2_get_attr_constant_value to it. | |
22261 | ||
22262 | However, note that for some attributes you must check | |
22263 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
22264 | and DW_FORM_data8 are members of both the constant class, and of | |
22265 | the classes that contain offsets into other debug sections | |
22266 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
22267 | that, if an attribute's can be either a constant or one of the | |
22268 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
22269 | taken as section offsets, not constants. */ | |
380bca97 | 22270 | |
3690dd37 | 22271 | static int |
6e5a29e1 | 22272 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
22273 | { |
22274 | switch (attr->form) | |
22275 | { | |
22276 | case DW_FORM_sdata: | |
22277 | case DW_FORM_udata: | |
22278 | case DW_FORM_data1: | |
22279 | case DW_FORM_data2: | |
22280 | case DW_FORM_data4: | |
22281 | case DW_FORM_data8: | |
22282 | return 1; | |
22283 | default: | |
22284 | return 0; | |
22285 | } | |
22286 | } | |
22287 | ||
7771576e SA |
22288 | |
22289 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
22290 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
22291 | ||
22292 | static int | |
6e5a29e1 | 22293 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
22294 | { |
22295 | switch (attr->form) | |
22296 | { | |
22297 | case DW_FORM_ref_addr: | |
22298 | case DW_FORM_ref1: | |
22299 | case DW_FORM_ref2: | |
22300 | case DW_FORM_ref4: | |
22301 | case DW_FORM_ref8: | |
22302 | case DW_FORM_ref_udata: | |
22303 | case DW_FORM_GNU_ref_alt: | |
22304 | return 1; | |
22305 | default: | |
22306 | return 0; | |
22307 | } | |
22308 | } | |
22309 | ||
3019eac3 DE |
22310 | /* Return the .debug_loc section to use for CU. |
22311 | For DWO files use .debug_loc.dwo. */ | |
22312 | ||
22313 | static struct dwarf2_section_info * | |
22314 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
22315 | { | |
22316 | if (cu->dwo_unit) | |
43988095 JK |
22317 | { |
22318 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
22319 | ||
22320 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
22321 | } | |
22322 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
22323 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
22324 | } |
22325 | ||
8cf6f0b1 TT |
22326 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
22327 | ||
22328 | static void | |
22329 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
22330 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 22331 | const struct attribute *attr) |
8cf6f0b1 | 22332 | { |
3019eac3 DE |
22333 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
22334 | ||
22335 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
22336 | |
22337 | baton->per_cu = cu->per_cu; | |
22338 | gdb_assert (baton->per_cu); | |
22339 | /* We don't know how long the location list is, but make sure we | |
22340 | don't run off the edge of the section. */ | |
3019eac3 DE |
22341 | baton->size = section->size - DW_UNSND (attr); |
22342 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 22343 | baton->base_address = cu->base_address; |
f664829e | 22344 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
22345 | } |
22346 | ||
4c2df51b | 22347 | static void |
ff39bb5e | 22348 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 22349 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 22350 | { |
bb5ed363 | 22351 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 22352 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 22353 | |
3690dd37 | 22354 | if (attr_form_is_section_offset (attr) |
3019eac3 | 22355 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
22356 | the section. If so, fall through to the complaint in the |
22357 | other branch. */ | |
3019eac3 | 22358 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 22359 | { |
0d53c4c4 | 22360 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 22361 | |
8d749320 | 22362 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 22363 | |
8cf6f0b1 | 22364 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 22365 | |
d00adf39 | 22366 | if (cu->base_known == 0) |
0d53c4c4 | 22367 | complaint (&symfile_complaints, |
3e43a32a MS |
22368 | _("Location list used without " |
22369 | "specifying the CU base address.")); | |
4c2df51b | 22370 | |
f1e6e072 TT |
22371 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22372 | ? dwarf2_loclist_block_index | |
22373 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
22374 | SYMBOL_LOCATION_BATON (sym) = baton; |
22375 | } | |
22376 | else | |
22377 | { | |
22378 | struct dwarf2_locexpr_baton *baton; | |
22379 | ||
8d749320 | 22380 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
22381 | baton->per_cu = cu->per_cu; |
22382 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
22383 | |
22384 | if (attr_form_is_block (attr)) | |
22385 | { | |
22386 | /* Note that we're just copying the block's data pointer | |
22387 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
22388 | info_buffer for SYM's objfile; right now we never release |
22389 | that buffer, but when we do clean up properly this may | |
22390 | need to change. */ | |
0d53c4c4 DJ |
22391 | baton->size = DW_BLOCK (attr)->size; |
22392 | baton->data = DW_BLOCK (attr)->data; | |
22393 | } | |
22394 | else | |
22395 | { | |
22396 | dwarf2_invalid_attrib_class_complaint ("location description", | |
22397 | SYMBOL_NATURAL_NAME (sym)); | |
22398 | baton->size = 0; | |
0d53c4c4 | 22399 | } |
6e70227d | 22400 | |
f1e6e072 TT |
22401 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22402 | ? dwarf2_locexpr_block_index | |
22403 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
22404 | SYMBOL_LOCATION_BATON (sym) = baton; |
22405 | } | |
4c2df51b | 22406 | } |
6502dd73 | 22407 | |
9aa1f1e3 TT |
22408 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
22409 | came from a separate debuginfo file, then the master objfile is | |
22410 | returned. */ | |
ae0d2f24 UW |
22411 | |
22412 | struct objfile * | |
22413 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
22414 | { | |
9291a0cd | 22415 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
22416 | |
22417 | /* Return the master objfile, so that we can report and look up the | |
22418 | correct file containing this variable. */ | |
22419 | if (objfile->separate_debug_objfile_backlink) | |
22420 | objfile = objfile->separate_debug_objfile_backlink; | |
22421 | ||
22422 | return objfile; | |
22423 | } | |
22424 | ||
96408a79 SA |
22425 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
22426 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
22427 | CU_HEADERP first. */ | |
22428 | ||
22429 | static const struct comp_unit_head * | |
22430 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
22431 | struct dwarf2_per_cu_data *per_cu) | |
22432 | { | |
d521ce57 | 22433 | const gdb_byte *info_ptr; |
96408a79 SA |
22434 | |
22435 | if (per_cu->cu) | |
22436 | return &per_cu->cu->header; | |
22437 | ||
8a0459fd | 22438 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
22439 | |
22440 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
22441 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
22442 | rcuh_kind::COMPILE); | |
96408a79 SA |
22443 | |
22444 | return cu_headerp; | |
22445 | } | |
22446 | ||
ae0d2f24 UW |
22447 | /* Return the address size given in the compilation unit header for CU. */ |
22448 | ||
98714339 | 22449 | int |
ae0d2f24 UW |
22450 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
22451 | { | |
96408a79 SA |
22452 | struct comp_unit_head cu_header_local; |
22453 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 22454 | |
96408a79 SA |
22455 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
22456 | ||
22457 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
22458 | } |
22459 | ||
9eae7c52 TT |
22460 | /* Return the offset size given in the compilation unit header for CU. */ |
22461 | ||
22462 | int | |
22463 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
22464 | { | |
96408a79 SA |
22465 | struct comp_unit_head cu_header_local; |
22466 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 22467 | |
96408a79 SA |
22468 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
22469 | ||
22470 | return cu_headerp->offset_size; | |
22471 | } | |
22472 | ||
22473 | /* See its dwarf2loc.h declaration. */ | |
22474 | ||
22475 | int | |
22476 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
22477 | { | |
22478 | struct comp_unit_head cu_header_local; | |
22479 | const struct comp_unit_head *cu_headerp; | |
22480 | ||
22481 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
22482 | ||
22483 | if (cu_headerp->version == 2) | |
22484 | return cu_headerp->addr_size; | |
22485 | else | |
22486 | return cu_headerp->offset_size; | |
181cebd4 JK |
22487 | } |
22488 | ||
9aa1f1e3 TT |
22489 | /* Return the text offset of the CU. The returned offset comes from |
22490 | this CU's objfile. If this objfile came from a separate debuginfo | |
22491 | file, then the offset may be different from the corresponding | |
22492 | offset in the parent objfile. */ | |
22493 | ||
22494 | CORE_ADDR | |
22495 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
22496 | { | |
bb3fa9d0 | 22497 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
22498 | |
22499 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
22500 | } | |
22501 | ||
43988095 JK |
22502 | /* Return DWARF version number of PER_CU. */ |
22503 | ||
22504 | short | |
22505 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
22506 | { | |
22507 | return per_cu->dwarf_version; | |
22508 | } | |
22509 | ||
348e048f DE |
22510 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
22511 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
22512 | |
22513 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 22514 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 22515 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
22516 | struct objfile *objfile) |
22517 | { | |
22518 | struct dwarf2_per_cu_data *this_cu; | |
22519 | int low, high; | |
36586728 | 22520 | const sect_offset *cu_off; |
ae038cb0 | 22521 | |
ae038cb0 DJ |
22522 | low = 0; |
22523 | high = dwarf2_per_objfile->n_comp_units - 1; | |
22524 | while (high > low) | |
22525 | { | |
36586728 | 22526 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 22527 | int mid = low + (high - low) / 2; |
9a619af0 | 22528 | |
36586728 TT |
22529 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
22530 | cu_off = &mid_cu->offset; | |
22531 | if (mid_cu->is_dwz > offset_in_dwz | |
22532 | || (mid_cu->is_dwz == offset_in_dwz | |
22533 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
22534 | high = mid; |
22535 | else | |
22536 | low = mid + 1; | |
22537 | } | |
22538 | gdb_assert (low == high); | |
36586728 TT |
22539 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
22540 | cu_off = &this_cu->offset; | |
22541 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 22542 | { |
36586728 | 22543 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
22544 | error (_("Dwarf Error: could not find partial DIE containing " |
22545 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 22546 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 22547 | |
b64f50a1 JK |
22548 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
22549 | <= offset.sect_off); | |
ae038cb0 DJ |
22550 | return dwarf2_per_objfile->all_comp_units[low-1]; |
22551 | } | |
22552 | else | |
22553 | { | |
22554 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
22555 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
22556 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
22557 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
22558 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
22559 | return this_cu; |
22560 | } | |
22561 | } | |
22562 | ||
23745b47 | 22563 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 22564 | |
9816fde3 | 22565 | static void |
23745b47 | 22566 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 22567 | { |
9816fde3 | 22568 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
22569 | per_cu->cu = cu; |
22570 | cu->per_cu = per_cu; | |
22571 | cu->objfile = per_cu->objfile; | |
93311388 | 22572 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
22573 | } |
22574 | ||
22575 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
22576 | ||
22577 | static void | |
95554aad TT |
22578 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
22579 | enum language pretend_language) | |
9816fde3 JK |
22580 | { |
22581 | struct attribute *attr; | |
22582 | ||
22583 | /* Set the language we're debugging. */ | |
22584 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
22585 | if (attr) | |
22586 | set_cu_language (DW_UNSND (attr), cu); | |
22587 | else | |
9cded63f | 22588 | { |
95554aad | 22589 | cu->language = pretend_language; |
9cded63f TT |
22590 | cu->language_defn = language_def (cu->language); |
22591 | } | |
dee91e82 | 22592 | |
7d45c7c3 | 22593 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
22594 | } |
22595 | ||
ae038cb0 DJ |
22596 | /* Release one cached compilation unit, CU. We unlink it from the tree |
22597 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
22598 | the caller is responsible for that. |
22599 | NOTE: DATA is a void * because this function is also used as a | |
22600 | cleanup routine. */ | |
ae038cb0 DJ |
22601 | |
22602 | static void | |
68dc6402 | 22603 | free_heap_comp_unit (void *data) |
ae038cb0 | 22604 | { |
9a3c8263 | 22605 | struct dwarf2_cu *cu = (struct dwarf2_cu *) data; |
ae038cb0 | 22606 | |
23745b47 DE |
22607 | gdb_assert (cu->per_cu != NULL); |
22608 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
22609 | cu->per_cu = NULL; |
22610 | ||
22611 | obstack_free (&cu->comp_unit_obstack, NULL); | |
22612 | ||
22613 | xfree (cu); | |
22614 | } | |
22615 | ||
72bf9492 | 22616 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 22617 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 22618 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
22619 | |
22620 | static void | |
22621 | free_stack_comp_unit (void *data) | |
22622 | { | |
9a3c8263 | 22623 | struct dwarf2_cu *cu = (struct dwarf2_cu *) data; |
72bf9492 | 22624 | |
23745b47 DE |
22625 | gdb_assert (cu->per_cu != NULL); |
22626 | cu->per_cu->cu = NULL; | |
22627 | cu->per_cu = NULL; | |
22628 | ||
72bf9492 DJ |
22629 | obstack_free (&cu->comp_unit_obstack, NULL); |
22630 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
22631 | } |
22632 | ||
22633 | /* Free all cached compilation units. */ | |
22634 | ||
22635 | static void | |
22636 | free_cached_comp_units (void *data) | |
22637 | { | |
22638 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22639 | ||
22640 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22641 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22642 | while (per_cu != NULL) | |
22643 | { | |
22644 | struct dwarf2_per_cu_data *next_cu; | |
22645 | ||
22646 | next_cu = per_cu->cu->read_in_chain; | |
22647 | ||
68dc6402 | 22648 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
22649 | *last_chain = next_cu; |
22650 | ||
22651 | per_cu = next_cu; | |
22652 | } | |
22653 | } | |
22654 | ||
22655 | /* Increase the age counter on each cached compilation unit, and free | |
22656 | any that are too old. */ | |
22657 | ||
22658 | static void | |
22659 | age_cached_comp_units (void) | |
22660 | { | |
22661 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22662 | ||
22663 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
22664 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22665 | while (per_cu != NULL) | |
22666 | { | |
22667 | per_cu->cu->last_used ++; | |
b4f54984 | 22668 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
22669 | dwarf2_mark (per_cu->cu); |
22670 | per_cu = per_cu->cu->read_in_chain; | |
22671 | } | |
22672 | ||
22673 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22674 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22675 | while (per_cu != NULL) | |
22676 | { | |
22677 | struct dwarf2_per_cu_data *next_cu; | |
22678 | ||
22679 | next_cu = per_cu->cu->read_in_chain; | |
22680 | ||
22681 | if (!per_cu->cu->mark) | |
22682 | { | |
68dc6402 | 22683 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
22684 | *last_chain = next_cu; |
22685 | } | |
22686 | else | |
22687 | last_chain = &per_cu->cu->read_in_chain; | |
22688 | ||
22689 | per_cu = next_cu; | |
22690 | } | |
22691 | } | |
22692 | ||
22693 | /* Remove a single compilation unit from the cache. */ | |
22694 | ||
22695 | static void | |
dee91e82 | 22696 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
22697 | { |
22698 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
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 | ||
dee91e82 | 22708 | if (per_cu == target_per_cu) |
ae038cb0 | 22709 | { |
68dc6402 | 22710 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 22711 | per_cu->cu = NULL; |
ae038cb0 DJ |
22712 | *last_chain = next_cu; |
22713 | break; | |
22714 | } | |
22715 | else | |
22716 | last_chain = &per_cu->cu->read_in_chain; | |
22717 | ||
22718 | per_cu = next_cu; | |
22719 | } | |
22720 | } | |
22721 | ||
fe3e1990 DJ |
22722 | /* Release all extra memory associated with OBJFILE. */ |
22723 | ||
22724 | void | |
22725 | dwarf2_free_objfile (struct objfile *objfile) | |
22726 | { | |
9a3c8263 SM |
22727 | dwarf2_per_objfile |
22728 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
22729 | dwarf2_objfile_data_key); | |
fe3e1990 DJ |
22730 | |
22731 | if (dwarf2_per_objfile == NULL) | |
22732 | return; | |
22733 | ||
22734 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
22735 | free_cached_comp_units (NULL); | |
22736 | ||
7b9f3c50 DE |
22737 | if (dwarf2_per_objfile->quick_file_names_table) |
22738 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 22739 | |
527f3840 JK |
22740 | if (dwarf2_per_objfile->line_header_hash) |
22741 | htab_delete (dwarf2_per_objfile->line_header_hash); | |
22742 | ||
fe3e1990 DJ |
22743 | /* Everything else should be on the objfile obstack. */ |
22744 | } | |
22745 | ||
dee91e82 DE |
22746 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
22747 | We store these in a hash table separate from the DIEs, and preserve them | |
22748 | when the DIEs are flushed out of cache. | |
22749 | ||
22750 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 22751 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
22752 | or the type may come from a DWO file. Furthermore, while it's more logical |
22753 | to use per_cu->section+offset, with Fission the section with the data is in | |
22754 | the DWO file but we don't know that section at the point we need it. | |
22755 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
22756 | because we can enter the lookup routine, get_die_type_at_offset, from | |
22757 | outside this file, and thus won't necessarily have PER_CU->cu. | |
22758 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 22759 | |
dee91e82 | 22760 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 22761 | { |
dee91e82 | 22762 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 22763 | sect_offset offset; |
1c379e20 DJ |
22764 | struct type *type; |
22765 | }; | |
22766 | ||
dee91e82 | 22767 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22768 | |
22769 | static hashval_t | |
dee91e82 | 22770 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 22771 | { |
9a3c8263 SM |
22772 | const struct dwarf2_per_cu_offset_and_type *ofs |
22773 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 22774 | |
dee91e82 | 22775 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
22776 | } |
22777 | ||
dee91e82 | 22778 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22779 | |
22780 | static int | |
dee91e82 | 22781 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 22782 | { |
9a3c8263 SM |
22783 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
22784 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
22785 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
22786 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 22787 | |
dee91e82 DE |
22788 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
22789 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
22790 | } |
22791 | ||
22792 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
22793 | table if necessary. For convenience, return TYPE. |
22794 | ||
22795 | The DIEs reading must have careful ordering to: | |
22796 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
22797 | reading current DIE. | |
22798 | * Not trying to dereference contents of still incompletely read in types | |
22799 | while reading in other DIEs. | |
22800 | * Enable referencing still incompletely read in types just by a pointer to | |
22801 | the type without accessing its fields. | |
22802 | ||
22803 | Therefore caller should follow these rules: | |
22804 | * Try to fetch any prerequisite types we may need to build this DIE type | |
22805 | before building the type and calling set_die_type. | |
e71ec853 | 22806 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
22807 | possible before fetching more types to complete the current type. |
22808 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 22809 | |
f792889a | 22810 | static struct type * |
1c379e20 DJ |
22811 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
22812 | { | |
dee91e82 | 22813 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 22814 | struct objfile *objfile = cu->objfile; |
3cdcd0ce JB |
22815 | struct attribute *attr; |
22816 | struct dynamic_prop prop; | |
1c379e20 | 22817 | |
b4ba55a1 JB |
22818 | /* For Ada types, make sure that the gnat-specific data is always |
22819 | initialized (if not already set). There are a few types where | |
22820 | we should not be doing so, because the type-specific area is | |
22821 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
22822 | where the type-specific area is used to store the floatformat). | |
22823 | But this is not a problem, because the gnat-specific information | |
22824 | is actually not needed for these types. */ | |
22825 | if (need_gnat_info (cu) | |
22826 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
22827 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
22828 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
22829 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
22830 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
22831 | && !HAVE_GNAT_AUX_INFO (type)) |
22832 | INIT_GNAT_SPECIFIC (type); | |
22833 | ||
3f2f83dd KB |
22834 | /* Read DW_AT_allocated and set in type. */ |
22835 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
22836 | if (attr_form_is_block (attr)) | |
22837 | { | |
22838 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
22839 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type, objfile); | |
22840 | } | |
22841 | else if (attr != NULL) | |
22842 | { | |
22843 | complaint (&symfile_complaints, | |
22844 | _("DW_AT_allocated has the wrong form (%s) at DIE 0x%x"), | |
22845 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), | |
22846 | die->offset.sect_off); | |
22847 | } | |
22848 | ||
22849 | /* Read DW_AT_associated and set in type. */ | |
22850 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
22851 | if (attr_form_is_block (attr)) | |
22852 | { | |
22853 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
22854 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type, objfile); | |
22855 | } | |
22856 | else if (attr != NULL) | |
22857 | { | |
22858 | complaint (&symfile_complaints, | |
22859 | _("DW_AT_associated has the wrong form (%s) at DIE 0x%x"), | |
22860 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), | |
22861 | die->offset.sect_off); | |
22862 | } | |
22863 | ||
3cdcd0ce JB |
22864 | /* Read DW_AT_data_location and set in type. */ |
22865 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
22866 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
93a8e227 | 22867 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type, objfile); |
3cdcd0ce | 22868 | |
dee91e82 | 22869 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22870 | { |
dee91e82 DE |
22871 | dwarf2_per_objfile->die_type_hash = |
22872 | htab_create_alloc_ex (127, | |
22873 | per_cu_offset_and_type_hash, | |
22874 | per_cu_offset_and_type_eq, | |
22875 | NULL, | |
22876 | &objfile->objfile_obstack, | |
22877 | hashtab_obstack_allocate, | |
22878 | dummy_obstack_deallocate); | |
f792889a | 22879 | } |
1c379e20 | 22880 | |
dee91e82 | 22881 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
22882 | ofs.offset = die->offset; |
22883 | ofs.type = type; | |
dee91e82 DE |
22884 | slot = (struct dwarf2_per_cu_offset_and_type **) |
22885 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
22886 | if (*slot) |
22887 | complaint (&symfile_complaints, | |
22888 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 22889 | die->offset.sect_off); |
8d749320 SM |
22890 | *slot = XOBNEW (&objfile->objfile_obstack, |
22891 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 22892 | **slot = ofs; |
f792889a | 22893 | return type; |
1c379e20 DJ |
22894 | } |
22895 | ||
02142a6c DE |
22896 | /* Look up the type for the die at OFFSET in PER_CU in die_type_hash, |
22897 | or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
22898 | |
22899 | static struct type * | |
b64f50a1 | 22900 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 22901 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 22902 | { |
dee91e82 | 22903 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 22904 | |
dee91e82 | 22905 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22906 | return NULL; |
1c379e20 | 22907 | |
dee91e82 | 22908 | ofs.per_cu = per_cu; |
673bfd45 | 22909 | ofs.offset = offset; |
9a3c8263 SM |
22910 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
22911 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
22912 | if (slot) |
22913 | return slot->type; | |
22914 | else | |
22915 | return NULL; | |
22916 | } | |
22917 | ||
02142a6c | 22918 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
22919 | or return NULL if DIE does not have a saved type. */ |
22920 | ||
22921 | static struct type * | |
22922 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
22923 | { | |
22924 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
22925 | } | |
22926 | ||
10b3939b DJ |
22927 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
22928 | ||
22929 | static void | |
22930 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
22931 | struct dwarf2_per_cu_data *ref_per_cu) | |
22932 | { | |
22933 | void **slot; | |
22934 | ||
22935 | if (cu->dependencies == NULL) | |
22936 | cu->dependencies | |
22937 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
22938 | NULL, &cu->comp_unit_obstack, | |
22939 | hashtab_obstack_allocate, | |
22940 | dummy_obstack_deallocate); | |
22941 | ||
22942 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
22943 | if (*slot == NULL) | |
22944 | *slot = ref_per_cu; | |
22945 | } | |
1c379e20 | 22946 | |
f504f079 DE |
22947 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
22948 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
22949 | cache that we must keep because we are keeping CU. */ |
22950 | ||
10b3939b DJ |
22951 | static int |
22952 | dwarf2_mark_helper (void **slot, void *data) | |
22953 | { | |
22954 | struct dwarf2_per_cu_data *per_cu; | |
22955 | ||
22956 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
22957 | |
22958 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
22959 | reading of the chain. As such dependencies remain valid it is not much | |
22960 | useful to track and undo them during QUIT cleanups. */ | |
22961 | if (per_cu->cu == NULL) | |
22962 | return 1; | |
22963 | ||
10b3939b DJ |
22964 | if (per_cu->cu->mark) |
22965 | return 1; | |
22966 | per_cu->cu->mark = 1; | |
22967 | ||
22968 | if (per_cu->cu->dependencies != NULL) | |
22969 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
22970 | ||
22971 | return 1; | |
22972 | } | |
22973 | ||
f504f079 DE |
22974 | /* Set the mark field in CU and in every other compilation unit in the |
22975 | cache that we must keep because we are keeping CU. */ | |
22976 | ||
ae038cb0 DJ |
22977 | static void |
22978 | dwarf2_mark (struct dwarf2_cu *cu) | |
22979 | { | |
22980 | if (cu->mark) | |
22981 | return; | |
22982 | cu->mark = 1; | |
10b3939b DJ |
22983 | if (cu->dependencies != NULL) |
22984 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
22985 | } |
22986 | ||
22987 | static void | |
22988 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
22989 | { | |
22990 | while (per_cu) | |
22991 | { | |
22992 | per_cu->cu->mark = 0; | |
22993 | per_cu = per_cu->cu->read_in_chain; | |
22994 | } | |
72bf9492 DJ |
22995 | } |
22996 | ||
72bf9492 DJ |
22997 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
22998 | is its offset in .debug_info for this objfile. */ | |
22999 | ||
23000 | static hashval_t | |
23001 | partial_die_hash (const void *item) | |
23002 | { | |
9a3c8263 SM |
23003 | const struct partial_die_info *part_die |
23004 | = (const struct partial_die_info *) item; | |
9a619af0 | 23005 | |
b64f50a1 | 23006 | return part_die->offset.sect_off; |
72bf9492 DJ |
23007 | } |
23008 | ||
23009 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23010 | are equal if they have the same offset. */ | |
23011 | ||
23012 | static int | |
23013 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23014 | { | |
9a3c8263 SM |
23015 | const struct partial_die_info *part_die_lhs |
23016 | = (const struct partial_die_info *) item_lhs; | |
23017 | const struct partial_die_info *part_die_rhs | |
23018 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 23019 | |
b64f50a1 | 23020 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
23021 | } |
23022 | ||
b4f54984 DE |
23023 | static struct cmd_list_element *set_dwarf_cmdlist; |
23024 | static struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
23025 | |
23026 | static void | |
b4f54984 | 23027 | set_dwarf_cmd (char *args, int from_tty) |
ae038cb0 | 23028 | { |
b4f54984 | 23029 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 23030 | gdb_stdout); |
ae038cb0 DJ |
23031 | } |
23032 | ||
23033 | static void | |
b4f54984 | 23034 | show_dwarf_cmd (char *args, int from_tty) |
6e70227d | 23035 | { |
b4f54984 | 23036 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
23037 | } |
23038 | ||
4bf44c1c | 23039 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
23040 | |
23041 | static void | |
c1bd65d0 | 23042 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc | 23043 | { |
9a3c8263 | 23044 | struct dwarf2_per_objfile *data = (struct dwarf2_per_objfile *) d; |
8b70b953 | 23045 | int ix; |
8b70b953 | 23046 | |
626f2d1c TT |
23047 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
23048 | cleaning up. */ | |
23049 | dwarf2_per_objfile = NULL; | |
23050 | ||
59b0c7c1 JB |
23051 | for (ix = 0; ix < data->n_comp_units; ++ix) |
23052 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 23053 | |
59b0c7c1 | 23054 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 23055 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
23056 | data->all_type_units[ix]->per_cu.imported_symtabs); |
23057 | xfree (data->all_type_units); | |
95554aad | 23058 | |
8b70b953 | 23059 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
23060 | |
23061 | if (data->dwo_files) | |
23062 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
23063 | if (data->dwp_file) |
23064 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
23065 | |
23066 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
23067 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
23068 | } |
23069 | ||
23070 | \f | |
ae2de4f8 | 23071 | /* The "save gdb-index" command. */ |
9291a0cd TT |
23072 | |
23073 | /* The contents of the hash table we create when building the string | |
23074 | table. */ | |
23075 | struct strtab_entry | |
23076 | { | |
23077 | offset_type offset; | |
23078 | const char *str; | |
23079 | }; | |
23080 | ||
559a7a62 JK |
23081 | /* Hash function for a strtab_entry. |
23082 | ||
23083 | Function is used only during write_hash_table so no index format backward | |
23084 | compatibility is needed. */ | |
b89be57b | 23085 | |
9291a0cd TT |
23086 | static hashval_t |
23087 | hash_strtab_entry (const void *e) | |
23088 | { | |
9a3c8263 | 23089 | const struct strtab_entry *entry = (const struct strtab_entry *) e; |
559a7a62 | 23090 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
23091 | } |
23092 | ||
23093 | /* Equality function for a strtab_entry. */ | |
b89be57b | 23094 | |
9291a0cd TT |
23095 | static int |
23096 | eq_strtab_entry (const void *a, const void *b) | |
23097 | { | |
9a3c8263 SM |
23098 | const struct strtab_entry *ea = (const struct strtab_entry *) a; |
23099 | const struct strtab_entry *eb = (const struct strtab_entry *) b; | |
9291a0cd TT |
23100 | return !strcmp (ea->str, eb->str); |
23101 | } | |
23102 | ||
23103 | /* Create a strtab_entry hash table. */ | |
b89be57b | 23104 | |
9291a0cd TT |
23105 | static htab_t |
23106 | create_strtab (void) | |
23107 | { | |
23108 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
23109 | xfree, xcalloc, xfree); | |
23110 | } | |
23111 | ||
23112 | /* Add a string to the constant pool. Return the string's offset in | |
23113 | host order. */ | |
b89be57b | 23114 | |
9291a0cd TT |
23115 | static offset_type |
23116 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
23117 | { | |
23118 | void **slot; | |
23119 | struct strtab_entry entry; | |
23120 | struct strtab_entry *result; | |
23121 | ||
23122 | entry.str = str; | |
23123 | slot = htab_find_slot (table, &entry, INSERT); | |
23124 | if (*slot) | |
9a3c8263 | 23125 | result = (struct strtab_entry *) *slot; |
9291a0cd TT |
23126 | else |
23127 | { | |
23128 | result = XNEW (struct strtab_entry); | |
23129 | result->offset = obstack_object_size (cpool); | |
23130 | result->str = str; | |
23131 | obstack_grow_str0 (cpool, str); | |
23132 | *slot = result; | |
23133 | } | |
23134 | return result->offset; | |
23135 | } | |
23136 | ||
23137 | /* An entry in the symbol table. */ | |
23138 | struct symtab_index_entry | |
23139 | { | |
23140 | /* The name of the symbol. */ | |
23141 | const char *name; | |
23142 | /* The offset of the name in the constant pool. */ | |
23143 | offset_type index_offset; | |
23144 | /* A sorted vector of the indices of all the CUs that hold an object | |
23145 | of this name. */ | |
23146 | VEC (offset_type) *cu_indices; | |
23147 | }; | |
23148 | ||
23149 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
23150 | struct mapped_symtab | |
23151 | { | |
23152 | offset_type n_elements; | |
23153 | offset_type size; | |
23154 | struct symtab_index_entry **data; | |
23155 | }; | |
23156 | ||
23157 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 23158 | |
9291a0cd TT |
23159 | static hashval_t |
23160 | hash_symtab_entry (const void *e) | |
23161 | { | |
9a3c8263 SM |
23162 | const struct symtab_index_entry *entry |
23163 | = (const struct symtab_index_entry *) e; | |
9291a0cd TT |
23164 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), |
23165 | sizeof (offset_type) * VEC_length (offset_type, | |
23166 | entry->cu_indices), | |
23167 | 0); | |
23168 | } | |
23169 | ||
23170 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 23171 | |
9291a0cd TT |
23172 | static int |
23173 | eq_symtab_entry (const void *a, const void *b) | |
23174 | { | |
9a3c8263 SM |
23175 | const struct symtab_index_entry *ea = (const struct symtab_index_entry *) a; |
23176 | const struct symtab_index_entry *eb = (const struct symtab_index_entry *) b; | |
9291a0cd TT |
23177 | int len = VEC_length (offset_type, ea->cu_indices); |
23178 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
23179 | return 0; | |
23180 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
23181 | VEC_address (offset_type, eb->cu_indices), | |
23182 | sizeof (offset_type) * len); | |
23183 | } | |
23184 | ||
23185 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 23186 | |
9291a0cd TT |
23187 | static void |
23188 | delete_symtab_entry (void *p) | |
23189 | { | |
9a3c8263 | 23190 | struct symtab_index_entry *entry = (struct symtab_index_entry *) p; |
9291a0cd TT |
23191 | VEC_free (offset_type, entry->cu_indices); |
23192 | xfree (entry); | |
23193 | } | |
23194 | ||
23195 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 23196 | |
9291a0cd | 23197 | static htab_t |
3876f04e | 23198 | create_symbol_hash_table (void) |
9291a0cd TT |
23199 | { |
23200 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
23201 | delete_symtab_entry, xcalloc, xfree); | |
23202 | } | |
23203 | ||
23204 | /* Create a new mapped symtab object. */ | |
b89be57b | 23205 | |
9291a0cd TT |
23206 | static struct mapped_symtab * |
23207 | create_mapped_symtab (void) | |
23208 | { | |
23209 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
23210 | symtab->n_elements = 0; | |
23211 | symtab->size = 1024; | |
23212 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
23213 | return symtab; | |
23214 | } | |
23215 | ||
23216 | /* Destroy a mapped_symtab. */ | |
b89be57b | 23217 | |
9291a0cd TT |
23218 | static void |
23219 | cleanup_mapped_symtab (void *p) | |
23220 | { | |
9a3c8263 | 23221 | struct mapped_symtab *symtab = (struct mapped_symtab *) p; |
9291a0cd TT |
23222 | /* The contents of the array are freed when the other hash table is |
23223 | destroyed. */ | |
23224 | xfree (symtab->data); | |
23225 | xfree (symtab); | |
23226 | } | |
23227 | ||
23228 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
23229 | the slot. |
23230 | ||
23231 | Function is used only during write_hash_table so no index format backward | |
23232 | compatibility is needed. */ | |
b89be57b | 23233 | |
9291a0cd TT |
23234 | static struct symtab_index_entry ** |
23235 | find_slot (struct mapped_symtab *symtab, const char *name) | |
23236 | { | |
559a7a62 | 23237 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
23238 | |
23239 | index = hash & (symtab->size - 1); | |
23240 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
23241 | ||
23242 | for (;;) | |
23243 | { | |
23244 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
23245 | return &symtab->data[index]; | |
23246 | index = (index + step) & (symtab->size - 1); | |
23247 | } | |
23248 | } | |
23249 | ||
23250 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 23251 | |
9291a0cd TT |
23252 | static void |
23253 | hash_expand (struct mapped_symtab *symtab) | |
23254 | { | |
23255 | offset_type old_size = symtab->size; | |
23256 | offset_type i; | |
23257 | struct symtab_index_entry **old_entries = symtab->data; | |
23258 | ||
23259 | symtab->size *= 2; | |
23260 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
23261 | ||
23262 | for (i = 0; i < old_size; ++i) | |
23263 | { | |
23264 | if (old_entries[i]) | |
23265 | { | |
23266 | struct symtab_index_entry **slot = find_slot (symtab, | |
23267 | old_entries[i]->name); | |
23268 | *slot = old_entries[i]; | |
23269 | } | |
23270 | } | |
23271 | ||
23272 | xfree (old_entries); | |
23273 | } | |
23274 | ||
156942c7 DE |
23275 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
23276 | CU_INDEX is the index of the CU in which the symbol appears. | |
23277 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 23278 | |
9291a0cd TT |
23279 | static void |
23280 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 23281 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
23282 | offset_type cu_index) |
23283 | { | |
23284 | struct symtab_index_entry **slot; | |
156942c7 | 23285 | offset_type cu_index_and_attrs; |
9291a0cd TT |
23286 | |
23287 | ++symtab->n_elements; | |
23288 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
23289 | hash_expand (symtab); | |
23290 | ||
23291 | slot = find_slot (symtab, name); | |
23292 | if (!*slot) | |
23293 | { | |
23294 | *slot = XNEW (struct symtab_index_entry); | |
23295 | (*slot)->name = name; | |
156942c7 | 23296 | /* index_offset is set later. */ |
9291a0cd TT |
23297 | (*slot)->cu_indices = NULL; |
23298 | } | |
156942c7 DE |
23299 | |
23300 | cu_index_and_attrs = 0; | |
23301 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
23302 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
23303 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
23304 | ||
23305 | /* We don't want to record an index value twice as we want to avoid the | |
23306 | duplication. | |
23307 | We process all global symbols and then all static symbols | |
23308 | (which would allow us to avoid the duplication by only having to check | |
23309 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
23310 | To keep things simple we don't worry about the duplication here and | |
23311 | sort and uniqufy the list after we've processed all symbols. */ | |
23312 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
23313 | } | |
23314 | ||
23315 | /* qsort helper routine for uniquify_cu_indices. */ | |
23316 | ||
23317 | static int | |
23318 | offset_type_compare (const void *ap, const void *bp) | |
23319 | { | |
23320 | offset_type a = *(offset_type *) ap; | |
23321 | offset_type b = *(offset_type *) bp; | |
23322 | ||
23323 | return (a > b) - (b > a); | |
23324 | } | |
23325 | ||
23326 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
23327 | ||
23328 | static void | |
23329 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
23330 | { | |
23331 | int i; | |
23332 | ||
23333 | for (i = 0; i < symtab->size; ++i) | |
23334 | { | |
23335 | struct symtab_index_entry *entry = symtab->data[i]; | |
23336 | ||
23337 | if (entry | |
23338 | && entry->cu_indices != NULL) | |
23339 | { | |
23340 | unsigned int next_to_insert, next_to_check; | |
23341 | offset_type last_value; | |
23342 | ||
23343 | qsort (VEC_address (offset_type, entry->cu_indices), | |
23344 | VEC_length (offset_type, entry->cu_indices), | |
23345 | sizeof (offset_type), offset_type_compare); | |
23346 | ||
23347 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
23348 | next_to_insert = 1; | |
23349 | for (next_to_check = 1; | |
23350 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
23351 | ++next_to_check) | |
23352 | { | |
23353 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
23354 | != last_value) | |
23355 | { | |
23356 | last_value = VEC_index (offset_type, entry->cu_indices, | |
23357 | next_to_check); | |
23358 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
23359 | last_value); | |
23360 | ++next_to_insert; | |
23361 | } | |
23362 | } | |
23363 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
23364 | } | |
23365 | } | |
9291a0cd TT |
23366 | } |
23367 | ||
23368 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 23369 | |
9291a0cd | 23370 | static offset_type |
3876f04e | 23371 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
23372 | struct symtab_index_entry *entry) |
23373 | { | |
23374 | void **slot; | |
23375 | ||
3876f04e | 23376 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
23377 | if (!*slot) |
23378 | { | |
23379 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
23380 | offset_type val = MAYBE_SWAP (len); | |
23381 | offset_type iter; | |
23382 | int i; | |
23383 | ||
23384 | *slot = entry; | |
23385 | entry->index_offset = obstack_object_size (cpool); | |
23386 | ||
23387 | obstack_grow (cpool, &val, sizeof (val)); | |
23388 | for (i = 0; | |
23389 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
23390 | ++i) | |
23391 | { | |
23392 | val = MAYBE_SWAP (iter); | |
23393 | obstack_grow (cpool, &val, sizeof (val)); | |
23394 | } | |
23395 | } | |
23396 | else | |
23397 | { | |
9a3c8263 SM |
23398 | struct symtab_index_entry *old_entry |
23399 | = (struct symtab_index_entry *) *slot; | |
9291a0cd TT |
23400 | entry->index_offset = old_entry->index_offset; |
23401 | entry = old_entry; | |
23402 | } | |
23403 | return entry->index_offset; | |
23404 | } | |
23405 | ||
23406 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
23407 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 23408 | |
9291a0cd TT |
23409 | static void |
23410 | write_hash_table (struct mapped_symtab *symtab, | |
23411 | struct obstack *output, struct obstack *cpool) | |
23412 | { | |
23413 | offset_type i; | |
3876f04e | 23414 | htab_t symbol_hash_table; |
9291a0cd TT |
23415 | htab_t str_table; |
23416 | ||
3876f04e | 23417 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 23418 | str_table = create_strtab (); |
3876f04e | 23419 | |
9291a0cd TT |
23420 | /* We add all the index vectors to the constant pool first, to |
23421 | ensure alignment is ok. */ | |
23422 | for (i = 0; i < symtab->size; ++i) | |
23423 | { | |
23424 | if (symtab->data[i]) | |
3876f04e | 23425 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
23426 | } |
23427 | ||
23428 | /* Now write out the hash table. */ | |
23429 | for (i = 0; i < symtab->size; ++i) | |
23430 | { | |
23431 | offset_type str_off, vec_off; | |
23432 | ||
23433 | if (symtab->data[i]) | |
23434 | { | |
23435 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
23436 | vec_off = symtab->data[i]->index_offset; | |
23437 | } | |
23438 | else | |
23439 | { | |
23440 | /* While 0 is a valid constant pool index, it is not valid | |
23441 | to have 0 for both offsets. */ | |
23442 | str_off = 0; | |
23443 | vec_off = 0; | |
23444 | } | |
23445 | ||
23446 | str_off = MAYBE_SWAP (str_off); | |
23447 | vec_off = MAYBE_SWAP (vec_off); | |
23448 | ||
23449 | obstack_grow (output, &str_off, sizeof (str_off)); | |
23450 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
23451 | } | |
23452 | ||
23453 | htab_delete (str_table); | |
3876f04e | 23454 | htab_delete (symbol_hash_table); |
9291a0cd TT |
23455 | } |
23456 | ||
0a5429f6 DE |
23457 | /* Struct to map psymtab to CU index in the index file. */ |
23458 | struct psymtab_cu_index_map | |
23459 | { | |
23460 | struct partial_symtab *psymtab; | |
23461 | unsigned int cu_index; | |
23462 | }; | |
23463 | ||
23464 | static hashval_t | |
23465 | hash_psymtab_cu_index (const void *item) | |
23466 | { | |
9a3c8263 SM |
23467 | const struct psymtab_cu_index_map *map |
23468 | = (const struct psymtab_cu_index_map *) item; | |
0a5429f6 DE |
23469 | |
23470 | return htab_hash_pointer (map->psymtab); | |
23471 | } | |
23472 | ||
23473 | static int | |
23474 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
23475 | { | |
9a3c8263 SM |
23476 | const struct psymtab_cu_index_map *lhs |
23477 | = (const struct psymtab_cu_index_map *) item_lhs; | |
23478 | const struct psymtab_cu_index_map *rhs | |
23479 | = (const struct psymtab_cu_index_map *) item_rhs; | |
0a5429f6 DE |
23480 | |
23481 | return lhs->psymtab == rhs->psymtab; | |
23482 | } | |
23483 | ||
23484 | /* Helper struct for building the address table. */ | |
23485 | struct addrmap_index_data | |
23486 | { | |
23487 | struct objfile *objfile; | |
23488 | struct obstack *addr_obstack; | |
23489 | htab_t cu_index_htab; | |
23490 | ||
23491 | /* Non-zero if the previous_* fields are valid. | |
23492 | We can't write an entry until we see the next entry (since it is only then | |
23493 | that we know the end of the entry). */ | |
23494 | int previous_valid; | |
23495 | /* Index of the CU in the table of all CUs in the index file. */ | |
23496 | unsigned int previous_cu_index; | |
0963b4bd | 23497 | /* Start address of the CU. */ |
0a5429f6 DE |
23498 | CORE_ADDR previous_cu_start; |
23499 | }; | |
23500 | ||
23501 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 23502 | |
9291a0cd | 23503 | static void |
0a5429f6 DE |
23504 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
23505 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 23506 | { |
0a5429f6 | 23507 | offset_type cu_index_to_write; |
948f8e3d | 23508 | gdb_byte addr[8]; |
9291a0cd TT |
23509 | CORE_ADDR baseaddr; |
23510 | ||
23511 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
23512 | ||
0a5429f6 DE |
23513 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
23514 | obstack_grow (obstack, addr, 8); | |
23515 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
23516 | obstack_grow (obstack, addr, 8); | |
23517 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
23518 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
23519 | } | |
23520 | ||
23521 | /* Worker function for traversing an addrmap to build the address table. */ | |
23522 | ||
23523 | static int | |
23524 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
23525 | { | |
9a3c8263 SM |
23526 | struct addrmap_index_data *data = (struct addrmap_index_data *) datap; |
23527 | struct partial_symtab *pst = (struct partial_symtab *) obj; | |
0a5429f6 DE |
23528 | |
23529 | if (data->previous_valid) | |
23530 | add_address_entry (data->objfile, data->addr_obstack, | |
23531 | data->previous_cu_start, start_addr, | |
23532 | data->previous_cu_index); | |
23533 | ||
23534 | data->previous_cu_start = start_addr; | |
23535 | if (pst != NULL) | |
23536 | { | |
23537 | struct psymtab_cu_index_map find_map, *map; | |
23538 | find_map.psymtab = pst; | |
9a3c8263 SM |
23539 | map = ((struct psymtab_cu_index_map *) |
23540 | htab_find (data->cu_index_htab, &find_map)); | |
0a5429f6 DE |
23541 | gdb_assert (map != NULL); |
23542 | data->previous_cu_index = map->cu_index; | |
23543 | data->previous_valid = 1; | |
23544 | } | |
23545 | else | |
23546 | data->previous_valid = 0; | |
23547 | ||
23548 | return 0; | |
23549 | } | |
23550 | ||
23551 | /* Write OBJFILE's address map to OBSTACK. | |
23552 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
23553 | in the index file. */ | |
23554 | ||
23555 | static void | |
23556 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
23557 | htab_t cu_index_htab) | |
23558 | { | |
23559 | struct addrmap_index_data addrmap_index_data; | |
23560 | ||
23561 | /* When writing the address table, we have to cope with the fact that | |
23562 | the addrmap iterator only provides the start of a region; we have to | |
23563 | wait until the next invocation to get the start of the next region. */ | |
23564 | ||
23565 | addrmap_index_data.objfile = objfile; | |
23566 | addrmap_index_data.addr_obstack = obstack; | |
23567 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
23568 | addrmap_index_data.previous_valid = 0; | |
23569 | ||
23570 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
23571 | &addrmap_index_data); | |
23572 | ||
23573 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
23574 | is valid, but we should still handle it. | |
23575 | The end address is recorded as the start of the next region, but that | |
23576 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
23577 | anyway. */ | |
23578 | if (addrmap_index_data.previous_valid) | |
23579 | add_address_entry (objfile, obstack, | |
23580 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
23581 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
23582 | } |
23583 | ||
156942c7 DE |
23584 | /* Return the symbol kind of PSYM. */ |
23585 | ||
23586 | static gdb_index_symbol_kind | |
23587 | symbol_kind (struct partial_symbol *psym) | |
23588 | { | |
23589 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
23590 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
23591 | ||
23592 | switch (domain) | |
23593 | { | |
23594 | case VAR_DOMAIN: | |
23595 | switch (aclass) | |
23596 | { | |
23597 | case LOC_BLOCK: | |
23598 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
23599 | case LOC_TYPEDEF: | |
23600 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
23601 | case LOC_COMPUTED: | |
23602 | case LOC_CONST_BYTES: | |
23603 | case LOC_OPTIMIZED_OUT: | |
23604 | case LOC_STATIC: | |
23605 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
23606 | case LOC_CONST: | |
23607 | /* Note: It's currently impossible to recognize psyms as enum values | |
23608 | short of reading the type info. For now punt. */ | |
23609 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
23610 | default: | |
23611 | /* There are other LOC_FOO values that one might want to classify | |
23612 | as variables, but dwarf2read.c doesn't currently use them. */ | |
23613 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
23614 | } | |
23615 | case STRUCT_DOMAIN: | |
23616 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
23617 | default: | |
23618 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
23619 | } | |
23620 | } | |
23621 | ||
9291a0cd | 23622 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 23623 | |
9291a0cd TT |
23624 | static void |
23625 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 23626 | htab_t psyms_seen, |
9291a0cd TT |
23627 | struct partial_symbol **psymp, |
23628 | int count, | |
987d643c TT |
23629 | offset_type cu_index, |
23630 | int is_static) | |
9291a0cd TT |
23631 | { |
23632 | for (; count-- > 0; ++psymp) | |
23633 | { | |
156942c7 DE |
23634 | struct partial_symbol *psym = *psymp; |
23635 | void **slot; | |
987d643c | 23636 | |
156942c7 | 23637 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 23638 | error (_("Ada is not currently supported by the index")); |
987d643c | 23639 | |
987d643c | 23640 | /* Only add a given psymbol once. */ |
156942c7 | 23641 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
23642 | if (!*slot) |
23643 | { | |
156942c7 DE |
23644 | gdb_index_symbol_kind kind = symbol_kind (psym); |
23645 | ||
23646 | *slot = psym; | |
23647 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
23648 | is_static, kind, cu_index); | |
987d643c | 23649 | } |
9291a0cd TT |
23650 | } |
23651 | } | |
23652 | ||
23653 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
23654 | exception if there is an error. */ | |
b89be57b | 23655 | |
9291a0cd TT |
23656 | static void |
23657 | write_obstack (FILE *file, struct obstack *obstack) | |
23658 | { | |
23659 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
23660 | file) | |
23661 | != obstack_object_size (obstack)) | |
23662 | error (_("couldn't data write to file")); | |
23663 | } | |
23664 | ||
1fd400ff TT |
23665 | /* A helper struct used when iterating over debug_types. */ |
23666 | struct signatured_type_index_data | |
23667 | { | |
23668 | struct objfile *objfile; | |
23669 | struct mapped_symtab *symtab; | |
23670 | struct obstack *types_list; | |
987d643c | 23671 | htab_t psyms_seen; |
1fd400ff TT |
23672 | int cu_index; |
23673 | }; | |
23674 | ||
23675 | /* A helper function that writes a single signatured_type to an | |
23676 | obstack. */ | |
b89be57b | 23677 | |
1fd400ff TT |
23678 | static int |
23679 | write_one_signatured_type (void **slot, void *d) | |
23680 | { | |
9a3c8263 SM |
23681 | struct signatured_type_index_data *info |
23682 | = (struct signatured_type_index_data *) d; | |
1fd400ff | 23683 | struct signatured_type *entry = (struct signatured_type *) *slot; |
0186c6a7 | 23684 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
23685 | gdb_byte val[8]; |
23686 | ||
23687 | write_psymbols (info->symtab, | |
987d643c | 23688 | info->psyms_seen, |
3e43a32a MS |
23689 | info->objfile->global_psymbols.list |
23690 | + psymtab->globals_offset, | |
987d643c TT |
23691 | psymtab->n_global_syms, info->cu_index, |
23692 | 0); | |
1fd400ff | 23693 | write_psymbols (info->symtab, |
987d643c | 23694 | info->psyms_seen, |
3e43a32a MS |
23695 | info->objfile->static_psymbols.list |
23696 | + psymtab->statics_offset, | |
987d643c TT |
23697 | psymtab->n_static_syms, info->cu_index, |
23698 | 1); | |
1fd400ff | 23699 | |
b64f50a1 JK |
23700 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23701 | entry->per_cu.offset.sect_off); | |
1fd400ff | 23702 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
23703 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23704 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
23705 | obstack_grow (info->types_list, val, 8); |
23706 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
23707 | obstack_grow (info->types_list, val, 8); | |
23708 | ||
23709 | ++info->cu_index; | |
23710 | ||
23711 | return 1; | |
23712 | } | |
23713 | ||
95554aad TT |
23714 | /* Recurse into all "included" dependencies and write their symbols as |
23715 | if they appeared in this psymtab. */ | |
23716 | ||
23717 | static void | |
23718 | recursively_write_psymbols (struct objfile *objfile, | |
23719 | struct partial_symtab *psymtab, | |
23720 | struct mapped_symtab *symtab, | |
23721 | htab_t psyms_seen, | |
23722 | offset_type cu_index) | |
23723 | { | |
23724 | int i; | |
23725 | ||
23726 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
23727 | if (psymtab->dependencies[i]->user != NULL) | |
23728 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
23729 | symtab, psyms_seen, cu_index); | |
23730 | ||
23731 | write_psymbols (symtab, | |
23732 | psyms_seen, | |
23733 | objfile->global_psymbols.list + psymtab->globals_offset, | |
23734 | psymtab->n_global_syms, cu_index, | |
23735 | 0); | |
23736 | write_psymbols (symtab, | |
23737 | psyms_seen, | |
23738 | objfile->static_psymbols.list + psymtab->statics_offset, | |
23739 | psymtab->n_static_syms, cu_index, | |
23740 | 1); | |
23741 | } | |
23742 | ||
9291a0cd | 23743 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 23744 | |
9291a0cd TT |
23745 | static void |
23746 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
23747 | { | |
23748 | struct cleanup *cleanup; | |
bef155c3 | 23749 | char *filename; |
1fd400ff TT |
23750 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
23751 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
23752 | int i; |
23753 | FILE *out_file; | |
23754 | struct mapped_symtab *symtab; | |
23755 | offset_type val, size_of_contents, total_len; | |
23756 | struct stat st; | |
0a5429f6 | 23757 | struct psymtab_cu_index_map *psymtab_cu_index_map; |
9291a0cd | 23758 | |
9291a0cd TT |
23759 | if (dwarf2_per_objfile->using_index) |
23760 | error (_("Cannot use an index to create the index")); | |
23761 | ||
8b70b953 TT |
23762 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
23763 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
23764 | ||
260b681b DE |
23765 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
23766 | return; | |
23767 | ||
4262abfb JK |
23768 | if (stat (objfile_name (objfile), &st) < 0) |
23769 | perror_with_name (objfile_name (objfile)); | |
9291a0cd | 23770 | |
4262abfb | 23771 | filename = concat (dir, SLASH_STRING, lbasename (objfile_name (objfile)), |
9291a0cd TT |
23772 | INDEX_SUFFIX, (char *) NULL); |
23773 | cleanup = make_cleanup (xfree, filename); | |
23774 | ||
614c279d | 23775 | out_file = gdb_fopen_cloexec (filename, "wb"); |
9291a0cd TT |
23776 | if (!out_file) |
23777 | error (_("Can't open `%s' for writing"), filename); | |
23778 | ||
bef155c3 | 23779 | gdb::unlinker unlink_file (filename); |
9291a0cd TT |
23780 | |
23781 | symtab = create_mapped_symtab (); | |
23782 | make_cleanup (cleanup_mapped_symtab, symtab); | |
23783 | ||
23784 | obstack_init (&addr_obstack); | |
23785 | make_cleanup_obstack_free (&addr_obstack); | |
23786 | ||
23787 | obstack_init (&cu_list); | |
23788 | make_cleanup_obstack_free (&cu_list); | |
23789 | ||
1fd400ff TT |
23790 | obstack_init (&types_cu_list); |
23791 | make_cleanup_obstack_free (&types_cu_list); | |
23792 | ||
fc4007c9 TT |
23793 | htab_up psyms_seen (htab_create_alloc (100, htab_hash_pointer, |
23794 | htab_eq_pointer, | |
23795 | NULL, xcalloc, xfree)); | |
987d643c | 23796 | |
0a5429f6 DE |
23797 | /* While we're scanning CU's create a table that maps a psymtab pointer |
23798 | (which is what addrmap records) to its index (which is what is recorded | |
23799 | in the index file). This will later be needed to write the address | |
23800 | table. */ | |
fc4007c9 TT |
23801 | htab_up cu_index_htab (htab_create_alloc (100, |
23802 | hash_psymtab_cu_index, | |
23803 | eq_psymtab_cu_index, | |
23804 | NULL, xcalloc, xfree)); | |
8d749320 SM |
23805 | psymtab_cu_index_map = XNEWVEC (struct psymtab_cu_index_map, |
23806 | dwarf2_per_objfile->n_comp_units); | |
0a5429f6 DE |
23807 | make_cleanup (xfree, psymtab_cu_index_map); |
23808 | ||
23809 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
23810 | work here. Also, the debug_types entries do not appear in |
23811 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
23812 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
23813 | { | |
3e43a32a MS |
23814 | struct dwarf2_per_cu_data *per_cu |
23815 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 23816 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 23817 | gdb_byte val[8]; |
0a5429f6 DE |
23818 | struct psymtab_cu_index_map *map; |
23819 | void **slot; | |
9291a0cd | 23820 | |
92fac807 JK |
23821 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
23822 | It may be referenced from a local scope but in such case it does not | |
23823 | need to be present in .gdb_index. */ | |
23824 | if (psymtab == NULL) | |
23825 | continue; | |
23826 | ||
95554aad | 23827 | if (psymtab->user == NULL) |
fc4007c9 TT |
23828 | recursively_write_psymbols (objfile, psymtab, symtab, |
23829 | psyms_seen.get (), i); | |
9291a0cd | 23830 | |
0a5429f6 DE |
23831 | map = &psymtab_cu_index_map[i]; |
23832 | map->psymtab = psymtab; | |
23833 | map->cu_index = i; | |
fc4007c9 | 23834 | slot = htab_find_slot (cu_index_htab.get (), map, INSERT); |
0a5429f6 DE |
23835 | gdb_assert (slot != NULL); |
23836 | gdb_assert (*slot == NULL); | |
23837 | *slot = map; | |
9291a0cd | 23838 | |
b64f50a1 JK |
23839 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
23840 | per_cu->offset.sect_off); | |
9291a0cd | 23841 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 23842 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
23843 | obstack_grow (&cu_list, val, 8); |
23844 | } | |
23845 | ||
0a5429f6 | 23846 | /* Dump the address map. */ |
fc4007c9 | 23847 | write_address_map (objfile, &addr_obstack, cu_index_htab.get ()); |
0a5429f6 | 23848 | |
1fd400ff TT |
23849 | /* Write out the .debug_type entries, if any. */ |
23850 | if (dwarf2_per_objfile->signatured_types) | |
23851 | { | |
23852 | struct signatured_type_index_data sig_data; | |
23853 | ||
23854 | sig_data.objfile = objfile; | |
23855 | sig_data.symtab = symtab; | |
23856 | sig_data.types_list = &types_cu_list; | |
fc4007c9 | 23857 | sig_data.psyms_seen = psyms_seen.get (); |
1fd400ff TT |
23858 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
23859 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
23860 | write_one_signatured_type, &sig_data); | |
23861 | } | |
23862 | ||
156942c7 DE |
23863 | /* Now that we've processed all symbols we can shrink their cu_indices |
23864 | lists. */ | |
23865 | uniquify_cu_indices (symtab); | |
23866 | ||
9291a0cd TT |
23867 | obstack_init (&constant_pool); |
23868 | make_cleanup_obstack_free (&constant_pool); | |
23869 | obstack_init (&symtab_obstack); | |
23870 | make_cleanup_obstack_free (&symtab_obstack); | |
23871 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
23872 | ||
23873 | obstack_init (&contents); | |
23874 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 23875 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
23876 | total_len = size_of_contents; |
23877 | ||
23878 | /* The version number. */ | |
796a7ff8 | 23879 | val = MAYBE_SWAP (8); |
9291a0cd TT |
23880 | obstack_grow (&contents, &val, sizeof (val)); |
23881 | ||
23882 | /* The offset of the CU list from the start of the file. */ | |
23883 | val = MAYBE_SWAP (total_len); | |
23884 | obstack_grow (&contents, &val, sizeof (val)); | |
23885 | total_len += obstack_object_size (&cu_list); | |
23886 | ||
1fd400ff TT |
23887 | /* The offset of the types CU list from the start of the file. */ |
23888 | val = MAYBE_SWAP (total_len); | |
23889 | obstack_grow (&contents, &val, sizeof (val)); | |
23890 | total_len += obstack_object_size (&types_cu_list); | |
23891 | ||
9291a0cd TT |
23892 | /* The offset of the address table from the start of the file. */ |
23893 | val = MAYBE_SWAP (total_len); | |
23894 | obstack_grow (&contents, &val, sizeof (val)); | |
23895 | total_len += obstack_object_size (&addr_obstack); | |
23896 | ||
23897 | /* The offset of the symbol table from the start of the file. */ | |
23898 | val = MAYBE_SWAP (total_len); | |
23899 | obstack_grow (&contents, &val, sizeof (val)); | |
23900 | total_len += obstack_object_size (&symtab_obstack); | |
23901 | ||
23902 | /* The offset of the constant pool from the start of the file. */ | |
23903 | val = MAYBE_SWAP (total_len); | |
23904 | obstack_grow (&contents, &val, sizeof (val)); | |
23905 | total_len += obstack_object_size (&constant_pool); | |
23906 | ||
23907 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
23908 | ||
23909 | write_obstack (out_file, &contents); | |
23910 | write_obstack (out_file, &cu_list); | |
1fd400ff | 23911 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
23912 | write_obstack (out_file, &addr_obstack); |
23913 | write_obstack (out_file, &symtab_obstack); | |
23914 | write_obstack (out_file, &constant_pool); | |
23915 | ||
23916 | fclose (out_file); | |
23917 | ||
bef155c3 TT |
23918 | /* We want to keep the file. */ |
23919 | unlink_file.keep (); | |
9291a0cd TT |
23920 | |
23921 | do_cleanups (cleanup); | |
23922 | } | |
23923 | ||
90476074 TT |
23924 | /* Implementation of the `save gdb-index' command. |
23925 | ||
23926 | Note that the file format used by this command is documented in the | |
23927 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 23928 | |
9291a0cd TT |
23929 | static void |
23930 | save_gdb_index_command (char *arg, int from_tty) | |
23931 | { | |
23932 | struct objfile *objfile; | |
23933 | ||
23934 | if (!arg || !*arg) | |
96d19272 | 23935 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
23936 | |
23937 | ALL_OBJFILES (objfile) | |
23938 | { | |
23939 | struct stat st; | |
23940 | ||
23941 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 23942 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
23943 | continue; |
23944 | ||
9a3c8263 SM |
23945 | dwarf2_per_objfile |
23946 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
23947 | dwarf2_objfile_data_key); | |
9291a0cd TT |
23948 | if (dwarf2_per_objfile) |
23949 | { | |
9291a0cd | 23950 | |
492d29ea | 23951 | TRY |
9291a0cd TT |
23952 | { |
23953 | write_psymtabs_to_index (objfile, arg); | |
23954 | } | |
492d29ea PA |
23955 | CATCH (except, RETURN_MASK_ERROR) |
23956 | { | |
23957 | exception_fprintf (gdb_stderr, except, | |
23958 | _("Error while writing index for `%s': "), | |
23959 | objfile_name (objfile)); | |
23960 | } | |
23961 | END_CATCH | |
9291a0cd TT |
23962 | } |
23963 | } | |
dce234bc PP |
23964 | } |
23965 | ||
9291a0cd TT |
23966 | \f |
23967 | ||
b4f54984 | 23968 | int dwarf_always_disassemble; |
9eae7c52 TT |
23969 | |
23970 | static void | |
b4f54984 DE |
23971 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
23972 | struct cmd_list_element *c, const char *value) | |
9eae7c52 | 23973 | { |
3e43a32a MS |
23974 | fprintf_filtered (file, |
23975 | _("Whether to always disassemble " | |
23976 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
23977 | value); |
23978 | } | |
23979 | ||
900e11f9 JK |
23980 | static void |
23981 | show_check_physname (struct ui_file *file, int from_tty, | |
23982 | struct cmd_list_element *c, const char *value) | |
23983 | { | |
23984 | fprintf_filtered (file, | |
23985 | _("Whether to check \"physname\" is %s.\n"), | |
23986 | value); | |
23987 | } | |
23988 | ||
6502dd73 DJ |
23989 | void _initialize_dwarf2_read (void); |
23990 | ||
23991 | void | |
23992 | _initialize_dwarf2_read (void) | |
23993 | { | |
96d19272 JK |
23994 | struct cmd_list_element *c; |
23995 | ||
dce234bc | 23996 | dwarf2_objfile_data_key |
c1bd65d0 | 23997 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 23998 | |
b4f54984 DE |
23999 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
24000 | Set DWARF specific variables.\n\ | |
24001 | Configure DWARF variables such as the cache size"), | |
24002 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
ae038cb0 DJ |
24003 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
24004 | ||
b4f54984 DE |
24005 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
24006 | Show DWARF specific variables\n\ | |
24007 | Show DWARF variables such as the cache size"), | |
24008 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
ae038cb0 DJ |
24009 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
24010 | ||
24011 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
b4f54984 DE |
24012 | &dwarf_max_cache_age, _("\ |
24013 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
24014 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
7915a72c AC |
24015 | A higher limit means that cached compilation units will be stored\n\ |
24016 | in memory longer, and more total memory will be used. Zero disables\n\ | |
24017 | caching, which can slow down startup."), | |
2c5b56ce | 24018 | NULL, |
b4f54984 DE |
24019 | show_dwarf_max_cache_age, |
24020 | &set_dwarf_cmdlist, | |
24021 | &show_dwarf_cmdlist); | |
d97bc12b | 24022 | |
9eae7c52 | 24023 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
b4f54984 | 24024 | &dwarf_always_disassemble, _("\ |
9eae7c52 TT |
24025 | Set whether `info address' always disassembles DWARF expressions."), _("\ |
24026 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
24027 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
24028 | syntax. When disabled, expressions will be printed in a more\n\ | |
24029 | conversational style, when possible."), | |
24030 | NULL, | |
b4f54984 DE |
24031 | show_dwarf_always_disassemble, |
24032 | &set_dwarf_cmdlist, | |
24033 | &show_dwarf_cmdlist); | |
24034 | ||
24035 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ | |
24036 | Set debugging of the DWARF reader."), _("\ | |
24037 | Show debugging of the DWARF reader."), _("\ | |
24038 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
73be47f5 DE |
24039 | reading and symtab expansion. A value of 1 (one) provides basic\n\ |
24040 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
24041 | NULL, |
24042 | NULL, | |
24043 | &setdebuglist, &showdebuglist); | |
24044 | ||
b4f54984 DE |
24045 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
24046 | Set debugging of the DWARF DIE reader."), _("\ | |
24047 | Show debugging of the DWARF DIE reader."), _("\ | |
d97bc12b DE |
24048 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ |
24049 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
24050 | NULL, |
24051 | NULL, | |
24052 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24053 | |
27e0867f DE |
24054 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
24055 | Set debugging of the dwarf line reader."), _("\ | |
24056 | Show debugging of the dwarf line reader."), _("\ | |
24057 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
24058 | A value of 1 (one) provides basic information.\n\ | |
24059 | A value greater than 1 provides more verbose information."), | |
24060 | NULL, | |
24061 | NULL, | |
24062 | &setdebuglist, &showdebuglist); | |
24063 | ||
900e11f9 JK |
24064 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
24065 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
24066 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
24067 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
24068 | the demangler."), | |
24069 | NULL, show_check_physname, | |
24070 | &setdebuglist, &showdebuglist); | |
24071 | ||
e615022a DE |
24072 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
24073 | no_class, &use_deprecated_index_sections, _("\ | |
24074 | Set whether to use deprecated gdb_index sections."), _("\ | |
24075 | Show whether to use deprecated gdb_index sections."), _("\ | |
24076 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
24077 | Normally they are ignored either because of a missing feature or\n\ | |
24078 | performance issue.\n\ | |
24079 | Warning: This option must be enabled before gdb reads the file."), | |
24080 | NULL, | |
24081 | NULL, | |
24082 | &setlist, &showlist); | |
24083 | ||
96d19272 | 24084 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 24085 | _("\ |
fc1a9d6e | 24086 | Save a gdb-index file.\n\ |
11570e71 | 24087 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
24088 | &save_cmdlist); |
24089 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
24090 | |
24091 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24092 | &dwarf2_locexpr_funcs); | |
24093 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24094 | &dwarf2_loclist_funcs); | |
24095 | ||
24096 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24097 | &dwarf2_block_frame_base_locexpr_funcs); | |
24098 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24099 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 24100 | } |