Commit | Line | Data |
---|---|---|
c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
61baf725 | 3 | Copyright (C) 1994-2017 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c SS |
31 | #include "defs.h" |
32 | #include "bfd.h" | |
80626a55 | 33 | #include "elf-bfd.h" |
c906108c SS |
34 | #include "symtab.h" |
35 | #include "gdbtypes.h" | |
c906108c | 36 | #include "objfiles.h" |
fa8f86ff | 37 | #include "dwarf2.h" |
c906108c SS |
38 | #include "buildsym.h" |
39 | #include "demangle.h" | |
50f182aa | 40 | #include "gdb-demangle.h" |
c906108c | 41 | #include "expression.h" |
d5166ae1 | 42 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 43 | #include "macrotab.h" |
c906108c SS |
44 | #include "language.h" |
45 | #include "complaints.h" | |
357e46e7 | 46 | #include "bcache.h" |
4c2df51b DJ |
47 | #include "dwarf2expr.h" |
48 | #include "dwarf2loc.h" | |
9219021c | 49 | #include "cp-support.h" |
72bf9492 | 50 | #include "hashtab.h" |
ae038cb0 DJ |
51 | #include "command.h" |
52 | #include "gdbcmd.h" | |
edb3359d | 53 | #include "block.h" |
ff013f42 | 54 | #include "addrmap.h" |
94af9270 | 55 | #include "typeprint.h" |
ccefe4c4 | 56 | #include "psympriv.h" |
53ce3c39 | 57 | #include <sys/stat.h> |
96d19272 | 58 | #include "completer.h" |
34eaf542 | 59 | #include "vec.h" |
98bfdba5 | 60 | #include "c-lang.h" |
a766d390 | 61 | #include "go-lang.h" |
98bfdba5 | 62 | #include "valprint.h" |
3019eac3 | 63 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 64 | #include "gdb/gdb-index.h" |
60d5a603 | 65 | #include <ctype.h> |
cbb099e8 | 66 | #include "gdb_bfd.h" |
4357ac6c | 67 | #include "f-lang.h" |
05cba821 | 68 | #include "source.h" |
614c279d | 69 | #include "filestuff.h" |
dc294be5 | 70 | #include "build-id.h" |
22cee43f | 71 | #include "namespace.h" |
bef155c3 | 72 | #include "common/gdb_unlinker.h" |
14bc53a8 | 73 | #include "common/function-view.h" |
ecfb656c PA |
74 | #include "common/gdb_optional.h" |
75 | #include "common/underlying.h" | |
4c2df51b | 76 | |
c906108c | 77 | #include <fcntl.h> |
c906108c | 78 | #include <sys/types.h> |
325fac50 | 79 | #include <algorithm> |
d8151005 | 80 | |
34eaf542 TT |
81 | typedef struct symbol *symbolp; |
82 | DEF_VEC_P (symbolp); | |
83 | ||
73be47f5 DE |
84 | /* When == 1, print basic high level tracing messages. |
85 | When > 1, be more verbose. | |
b4f54984 DE |
86 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
87 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 88 | |
d97bc12b | 89 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 90 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 91 | |
27e0867f DE |
92 | /* When non-zero, dump line number entries as they are read in. */ |
93 | static unsigned int dwarf_line_debug = 0; | |
94 | ||
900e11f9 JK |
95 | /* When non-zero, cross-check physname against demangler. */ |
96 | static int check_physname = 0; | |
97 | ||
481860b3 | 98 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 99 | static int use_deprecated_index_sections = 0; |
481860b3 | 100 | |
6502dd73 DJ |
101 | static const struct objfile_data *dwarf2_objfile_data_key; |
102 | ||
f1e6e072 TT |
103 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
104 | ||
105 | static int dwarf2_locexpr_index; | |
106 | static int dwarf2_loclist_index; | |
107 | static int dwarf2_locexpr_block_index; | |
108 | static int dwarf2_loclist_block_index; | |
109 | ||
73869dc2 DE |
110 | /* A descriptor for dwarf sections. |
111 | ||
112 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
113 | scanned. BUFFER, READIN are filled in later when the section is read. | |
114 | If the section contained compressed data then SIZE is updated to record | |
115 | the uncompressed size of the section. | |
116 | ||
117 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
118 | creating the concept of virtual sections contained within a real section. | |
119 | In DWP V2 the sections of the input DWO files are concatenated together | |
120 | into one section, but section offsets are kept relative to the original | |
121 | input section. | |
122 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
123 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
124 | describe the virtual section. */ | |
125 | ||
dce234bc PP |
126 | struct dwarf2_section_info |
127 | { | |
73869dc2 DE |
128 | union |
129 | { | |
e5aa3347 | 130 | /* If this is a real section, the bfd section. */ |
049412e3 | 131 | asection *section; |
73869dc2 | 132 | /* If this is a virtual section, pointer to the containing ("real") |
e5aa3347 | 133 | section. */ |
73869dc2 DE |
134 | struct dwarf2_section_info *containing_section; |
135 | } s; | |
19ac8c2e | 136 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 137 | const gdb_byte *buffer; |
73869dc2 | 138 | /* The size of the section, real or virtual. */ |
dce234bc | 139 | bfd_size_type size; |
73869dc2 DE |
140 | /* If this is a virtual section, the offset in the real section. |
141 | Only valid if is_virtual. */ | |
142 | bfd_size_type virtual_offset; | |
be391dca | 143 | /* True if we have tried to read this section. */ |
73869dc2 DE |
144 | char readin; |
145 | /* True if this is a virtual section, False otherwise. | |
049412e3 | 146 | This specifies which of s.section and s.containing_section to use. */ |
73869dc2 | 147 | char is_virtual; |
dce234bc PP |
148 | }; |
149 | ||
8b70b953 TT |
150 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
151 | DEF_VEC_O (dwarf2_section_info_def); | |
152 | ||
9291a0cd TT |
153 | /* All offsets in the index are of this type. It must be |
154 | architecture-independent. */ | |
155 | typedef uint32_t offset_type; | |
156 | ||
157 | DEF_VEC_I (offset_type); | |
158 | ||
156942c7 DE |
159 | /* Ensure only legit values are used. */ |
160 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
161 | do { \ | |
162 | gdb_assert ((unsigned int) (value) <= 1); \ | |
163 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
164 | } while (0) | |
165 | ||
166 | /* Ensure only legit values are used. */ | |
167 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
168 | do { \ | |
169 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
170 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
171 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
172 | } while (0) | |
173 | ||
174 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
175 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
176 | do { \ | |
177 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
178 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
179 | } while (0) | |
180 | ||
9291a0cd TT |
181 | /* A description of the mapped index. The file format is described in |
182 | a comment by the code that writes the index. */ | |
183 | struct mapped_index | |
184 | { | |
559a7a62 JK |
185 | /* Index data format version. */ |
186 | int version; | |
187 | ||
9291a0cd TT |
188 | /* The total length of the buffer. */ |
189 | off_t total_size; | |
b11b1f88 | 190 | |
9291a0cd TT |
191 | /* A pointer to the address table data. */ |
192 | const gdb_byte *address_table; | |
b11b1f88 | 193 | |
9291a0cd TT |
194 | /* Size of the address table data in bytes. */ |
195 | offset_type address_table_size; | |
b11b1f88 | 196 | |
3876f04e DE |
197 | /* The symbol table, implemented as a hash table. */ |
198 | const offset_type *symbol_table; | |
b11b1f88 | 199 | |
9291a0cd | 200 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 201 | offset_type symbol_table_slots; |
b11b1f88 | 202 | |
9291a0cd TT |
203 | /* A pointer to the constant pool. */ |
204 | const char *constant_pool; | |
205 | }; | |
206 | ||
95554aad TT |
207 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
208 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
209 | ||
52059ffd TT |
210 | struct tu_stats |
211 | { | |
212 | int nr_uniq_abbrev_tables; | |
213 | int nr_symtabs; | |
214 | int nr_symtab_sharers; | |
215 | int nr_stmt_less_type_units; | |
216 | int nr_all_type_units_reallocs; | |
217 | }; | |
218 | ||
9cdd5dbd DE |
219 | /* Collection of data recorded per objfile. |
220 | This hangs off of dwarf2_objfile_data_key. */ | |
221 | ||
6502dd73 DJ |
222 | struct dwarf2_per_objfile |
223 | { | |
dce234bc PP |
224 | struct dwarf2_section_info info; |
225 | struct dwarf2_section_info abbrev; | |
226 | struct dwarf2_section_info line; | |
dce234bc | 227 | struct dwarf2_section_info loc; |
43988095 | 228 | struct dwarf2_section_info loclists; |
dce234bc | 229 | struct dwarf2_section_info macinfo; |
cf2c3c16 | 230 | struct dwarf2_section_info macro; |
dce234bc | 231 | struct dwarf2_section_info str; |
43988095 | 232 | struct dwarf2_section_info line_str; |
dce234bc | 233 | struct dwarf2_section_info ranges; |
43988095 | 234 | struct dwarf2_section_info rnglists; |
3019eac3 | 235 | struct dwarf2_section_info addr; |
dce234bc PP |
236 | struct dwarf2_section_info frame; |
237 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 238 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 239 | |
8b70b953 TT |
240 | VEC (dwarf2_section_info_def) *types; |
241 | ||
be391dca TT |
242 | /* Back link. */ |
243 | struct objfile *objfile; | |
244 | ||
d467dd73 | 245 | /* Table of all the compilation units. This is used to locate |
10b3939b | 246 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
247 | struct dwarf2_per_cu_data **all_comp_units; |
248 | ||
249 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
250 | int n_comp_units; | |
251 | ||
1fd400ff | 252 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 253 | int n_type_units; |
1fd400ff | 254 | |
6aa5f3a6 DE |
255 | /* The number of elements allocated in all_type_units. |
256 | If there are skeleton-less TUs, we add them to all_type_units lazily. */ | |
257 | int n_allocated_type_units; | |
258 | ||
a2ce51a0 DE |
259 | /* The .debug_types-related CUs (TUs). |
260 | This is stored in malloc space because we may realloc it. */ | |
b4dd5633 | 261 | struct signatured_type **all_type_units; |
1fd400ff | 262 | |
f4dc4d17 DE |
263 | /* Table of struct type_unit_group objects. |
264 | The hash key is the DW_AT_stmt_list value. */ | |
265 | htab_t type_unit_groups; | |
72dca2f5 | 266 | |
348e048f DE |
267 | /* A table mapping .debug_types signatures to its signatured_type entry. |
268 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
269 | htab_t signatured_types; | |
270 | ||
f4dc4d17 DE |
271 | /* Type unit statistics, to see how well the scaling improvements |
272 | are doing. */ | |
52059ffd | 273 | struct tu_stats tu_stats; |
f4dc4d17 DE |
274 | |
275 | /* A chain of compilation units that are currently read in, so that | |
276 | they can be freed later. */ | |
277 | struct dwarf2_per_cu_data *read_in_chain; | |
278 | ||
3019eac3 DE |
279 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
280 | This is NULL if the table hasn't been allocated yet. */ | |
281 | htab_t dwo_files; | |
282 | ||
80626a55 DE |
283 | /* Non-zero if we've check for whether there is a DWP file. */ |
284 | int dwp_checked; | |
285 | ||
286 | /* The DWP file if there is one, or NULL. */ | |
287 | struct dwp_file *dwp_file; | |
288 | ||
36586728 TT |
289 | /* The shared '.dwz' file, if one exists. This is used when the |
290 | original data was compressed using 'dwz -m'. */ | |
291 | struct dwz_file *dwz_file; | |
292 | ||
72dca2f5 FR |
293 | /* A flag indicating wether this objfile has a section loaded at a |
294 | VMA of 0. */ | |
295 | int has_section_at_zero; | |
9291a0cd | 296 | |
ae2de4f8 DE |
297 | /* True if we are using the mapped index, |
298 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
299 | unsigned char using_index; |
300 | ||
ae2de4f8 | 301 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 302 | struct mapped_index *index_table; |
98bfdba5 | 303 | |
7b9f3c50 | 304 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
305 | TUs typically share line table entries with a CU, so we maintain a |
306 | separate table of all line table entries to support the sharing. | |
307 | Note that while there can be way more TUs than CUs, we've already | |
308 | sorted all the TUs into "type unit groups", grouped by their | |
309 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
310 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
311 | htab_t quick_file_names_table; |
312 | ||
98bfdba5 PA |
313 | /* Set during partial symbol reading, to prevent queueing of full |
314 | symbols. */ | |
315 | int reading_partial_symbols; | |
673bfd45 | 316 | |
dee91e82 | 317 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 318 | This is NULL if not allocated yet. |
02142a6c | 319 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
dee91e82 | 320 | htab_t die_type_hash; |
95554aad TT |
321 | |
322 | /* The CUs we recently read. */ | |
323 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
527f3840 JK |
324 | |
325 | /* Table containing line_header indexed by offset and offset_in_dwz. */ | |
326 | htab_t line_header_hash; | |
6502dd73 DJ |
327 | }; |
328 | ||
329 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 330 | |
251d32d9 | 331 | /* Default names of the debugging sections. */ |
c906108c | 332 | |
233a11ab CS |
333 | /* Note that if the debugging section has been compressed, it might |
334 | have a name like .zdebug_info. */ | |
335 | ||
9cdd5dbd DE |
336 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
337 | { | |
251d32d9 TG |
338 | { ".debug_info", ".zdebug_info" }, |
339 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
340 | { ".debug_line", ".zdebug_line" }, | |
341 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 342 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 343 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 344 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 345 | { ".debug_str", ".zdebug_str" }, |
43988095 | 346 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 347 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 348 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 349 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 350 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
351 | { ".debug_frame", ".zdebug_frame" }, |
352 | { ".eh_frame", NULL }, | |
24d3216f TT |
353 | { ".gdb_index", ".zgdb_index" }, |
354 | 23 | |
251d32d9 | 355 | }; |
c906108c | 356 | |
80626a55 | 357 | /* List of DWO/DWP sections. */ |
3019eac3 | 358 | |
80626a55 | 359 | static const struct dwop_section_names |
3019eac3 DE |
360 | { |
361 | struct dwarf2_section_names abbrev_dwo; | |
362 | struct dwarf2_section_names info_dwo; | |
363 | struct dwarf2_section_names line_dwo; | |
364 | struct dwarf2_section_names loc_dwo; | |
43988095 | 365 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
366 | struct dwarf2_section_names macinfo_dwo; |
367 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
368 | struct dwarf2_section_names str_dwo; |
369 | struct dwarf2_section_names str_offsets_dwo; | |
370 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
371 | struct dwarf2_section_names cu_index; |
372 | struct dwarf2_section_names tu_index; | |
3019eac3 | 373 | } |
80626a55 | 374 | dwop_section_names = |
3019eac3 DE |
375 | { |
376 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
377 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
378 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
379 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 380 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
381 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
382 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
383 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
384 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
385 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
386 | { ".debug_cu_index", ".zdebug_cu_index" }, |
387 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
388 | }; |
389 | ||
c906108c SS |
390 | /* local data types */ |
391 | ||
107d2387 AC |
392 | /* The data in a compilation unit header, after target2host |
393 | translation, looks like this. */ | |
c906108c | 394 | struct comp_unit_head |
a738430d | 395 | { |
c764a876 | 396 | unsigned int length; |
a738430d | 397 | short version; |
a738430d MK |
398 | unsigned char addr_size; |
399 | unsigned char signed_addr_p; | |
9c541725 | 400 | sect_offset abbrev_sect_off; |
57349743 | 401 | |
a738430d MK |
402 | /* Size of file offsets; either 4 or 8. */ |
403 | unsigned int offset_size; | |
57349743 | 404 | |
a738430d MK |
405 | /* Size of the length field; either 4 or 12. */ |
406 | unsigned int initial_length_size; | |
57349743 | 407 | |
43988095 JK |
408 | enum dwarf_unit_type unit_type; |
409 | ||
a738430d MK |
410 | /* Offset to the first byte of this compilation unit header in the |
411 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 412 | sect_offset sect_off; |
57349743 | 413 | |
d00adf39 DE |
414 | /* Offset to first die in this cu from the start of the cu. |
415 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 416 | cu_offset first_die_cu_offset; |
43988095 JK |
417 | |
418 | /* 64-bit signature of this type unit - it is valid only for | |
419 | UNIT_TYPE DW_UT_type. */ | |
420 | ULONGEST signature; | |
421 | ||
422 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 423 | cu_offset type_cu_offset_in_tu; |
a738430d | 424 | }; |
c906108c | 425 | |
3da10d80 KS |
426 | /* Type used for delaying computation of method physnames. |
427 | See comments for compute_delayed_physnames. */ | |
428 | struct delayed_method_info | |
429 | { | |
430 | /* The type to which the method is attached, i.e., its parent class. */ | |
431 | struct type *type; | |
432 | ||
433 | /* The index of the method in the type's function fieldlists. */ | |
434 | int fnfield_index; | |
435 | ||
436 | /* The index of the method in the fieldlist. */ | |
437 | int index; | |
438 | ||
439 | /* The name of the DIE. */ | |
440 | const char *name; | |
441 | ||
442 | /* The DIE associated with this method. */ | |
443 | struct die_info *die; | |
444 | }; | |
445 | ||
446 | typedef struct delayed_method_info delayed_method_info; | |
447 | DEF_VEC_O (delayed_method_info); | |
448 | ||
e7c27a73 DJ |
449 | /* Internal state when decoding a particular compilation unit. */ |
450 | struct dwarf2_cu | |
451 | { | |
452 | /* The objfile containing this compilation unit. */ | |
453 | struct objfile *objfile; | |
454 | ||
d00adf39 | 455 | /* The header of the compilation unit. */ |
e7c27a73 | 456 | struct comp_unit_head header; |
e142c38c | 457 | |
d00adf39 DE |
458 | /* Base address of this compilation unit. */ |
459 | CORE_ADDR base_address; | |
460 | ||
461 | /* Non-zero if base_address has been set. */ | |
462 | int base_known; | |
463 | ||
e142c38c DJ |
464 | /* The language we are debugging. */ |
465 | enum language language; | |
466 | const struct language_defn *language_defn; | |
467 | ||
b0f35d58 DL |
468 | const char *producer; |
469 | ||
e142c38c DJ |
470 | /* The generic symbol table building routines have separate lists for |
471 | file scope symbols and all all other scopes (local scopes). So | |
472 | we need to select the right one to pass to add_symbol_to_list(). | |
473 | We do it by keeping a pointer to the correct list in list_in_scope. | |
474 | ||
475 | FIXME: The original dwarf code just treated the file scope as the | |
476 | first local scope, and all other local scopes as nested local | |
477 | scopes, and worked fine. Check to see if we really need to | |
478 | distinguish these in buildsym.c. */ | |
479 | struct pending **list_in_scope; | |
480 | ||
433df2d4 DE |
481 | /* The abbrev table for this CU. |
482 | Normally this points to the abbrev table in the objfile. | |
483 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
484 | struct abbrev_table *abbrev_table; | |
72bf9492 | 485 | |
b64f50a1 JK |
486 | /* Hash table holding all the loaded partial DIEs |
487 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
488 | htab_t partial_dies; |
489 | ||
490 | /* Storage for things with the same lifetime as this read-in compilation | |
491 | unit, including partial DIEs. */ | |
492 | struct obstack comp_unit_obstack; | |
493 | ||
ae038cb0 DJ |
494 | /* When multiple dwarf2_cu structures are living in memory, this field |
495 | chains them all together, so that they can be released efficiently. | |
496 | We will probably also want a generation counter so that most-recently-used | |
497 | compilation units are cached... */ | |
498 | struct dwarf2_per_cu_data *read_in_chain; | |
499 | ||
69d751e3 | 500 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
501 | struct dwarf2_per_cu_data *per_cu; |
502 | ||
503 | /* How many compilation units ago was this CU last referenced? */ | |
504 | int last_used; | |
505 | ||
b64f50a1 JK |
506 | /* A hash table of DIE cu_offset for following references with |
507 | die_info->offset.sect_off as hash. */ | |
51545339 | 508 | htab_t die_hash; |
10b3939b DJ |
509 | |
510 | /* Full DIEs if read in. */ | |
511 | struct die_info *dies; | |
512 | ||
513 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
514 | units referenced by this one. Only set during full symbol processing; | |
515 | partial symbol tables do not have dependencies. */ | |
516 | htab_t dependencies; | |
517 | ||
cb1df416 DJ |
518 | /* Header data from the line table, during full symbol processing. */ |
519 | struct line_header *line_header; | |
520 | ||
3da10d80 KS |
521 | /* A list of methods which need to have physnames computed |
522 | after all type information has been read. */ | |
523 | VEC (delayed_method_info) *method_list; | |
524 | ||
96408a79 SA |
525 | /* To be copied to symtab->call_site_htab. */ |
526 | htab_t call_site_htab; | |
527 | ||
034e5797 DE |
528 | /* Non-NULL if this CU came from a DWO file. |
529 | There is an invariant here that is important to remember: | |
530 | Except for attributes copied from the top level DIE in the "main" | |
531 | (or "stub") file in preparation for reading the DWO file | |
532 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
533 | Either there isn't a DWO file (in which case this is NULL and the point | |
534 | is moot), or there is and either we're not going to read it (in which | |
535 | case this is NULL) or there is and we are reading it (in which case this | |
536 | is non-NULL). */ | |
3019eac3 DE |
537 | struct dwo_unit *dwo_unit; |
538 | ||
539 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
540 | (zero is a valid value though). | |
1dbab08b | 541 | Note this value comes from the Fission stub CU/TU's DIE. */ |
3019eac3 DE |
542 | ULONGEST addr_base; |
543 | ||
2e3cf129 DE |
544 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
545 | (zero is a valid value though). | |
1dbab08b | 546 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 547 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
548 | be used without needing to know whether DWO files are in use or not. |
549 | N.B. This does not apply to DW_AT_ranges appearing in | |
550 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
551 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
552 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
553 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
554 | ULONGEST ranges_base; |
555 | ||
ae038cb0 DJ |
556 | /* Mark used when releasing cached dies. */ |
557 | unsigned int mark : 1; | |
558 | ||
8be455d7 JK |
559 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
560 | This test is imperfect as there may exist optimized debug code not using | |
561 | any location list and still facing inlining issues if handled as | |
562 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 563 | unsigned int has_loclist : 1; |
ba919b58 | 564 | |
1b80a9fa JK |
565 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
566 | if all the producer_is_* fields are valid. This information is cached | |
567 | because profiling CU expansion showed excessive time spent in | |
568 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
569 | unsigned int checked_producer : 1; |
570 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 571 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 572 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
573 | |
574 | /* When set, the file that we're processing is known to have | |
575 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
576 | this information, but later versions do. */ | |
577 | ||
578 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
579 | }; |
580 | ||
10b3939b DJ |
581 | /* Persistent data held for a compilation unit, even when not |
582 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 583 | read_symtab_private field of the psymtab. */ |
10b3939b | 584 | |
ae038cb0 DJ |
585 | struct dwarf2_per_cu_data |
586 | { | |
36586728 | 587 | /* The start offset and length of this compilation unit. |
45452591 | 588 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
589 | initial_length_size. |
590 | If the DIE refers to a DWO file, this is always of the original die, | |
591 | not the DWO file. */ | |
9c541725 | 592 | sect_offset sect_off; |
36586728 | 593 | unsigned int length; |
ae038cb0 | 594 | |
43988095 JK |
595 | /* DWARF standard version this data has been read from (such as 4 or 5). */ |
596 | short dwarf_version; | |
597 | ||
ae038cb0 DJ |
598 | /* Flag indicating this compilation unit will be read in before |
599 | any of the current compilation units are processed. */ | |
c764a876 | 600 | unsigned int queued : 1; |
ae038cb0 | 601 | |
0d99eb77 DE |
602 | /* This flag will be set when reading partial DIEs if we need to load |
603 | absolutely all DIEs for this compilation unit, instead of just the ones | |
604 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
605 | hash table and don't find it. */ |
606 | unsigned int load_all_dies : 1; | |
607 | ||
0186c6a7 DE |
608 | /* Non-zero if this CU is from .debug_types. |
609 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
610 | this is non-zero. */ | |
3019eac3 DE |
611 | unsigned int is_debug_types : 1; |
612 | ||
36586728 TT |
613 | /* Non-zero if this CU is from the .dwz file. */ |
614 | unsigned int is_dwz : 1; | |
615 | ||
a2ce51a0 DE |
616 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
617 | This flag is only valid if is_debug_types is true. | |
618 | We can't read a CU directly from a DWO file: There are required | |
619 | attributes in the stub. */ | |
620 | unsigned int reading_dwo_directly : 1; | |
621 | ||
7ee85ab1 DE |
622 | /* Non-zero if the TU has been read. |
623 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
624 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
625 | fetching them from random other DWOs (due to comdat folding). | |
626 | If the TU has already been read, the optimization is unnecessary | |
627 | (and unwise - we don't want to change where gdb thinks the TU lives | |
628 | "midflight"). | |
629 | This flag is only valid if is_debug_types is true. */ | |
630 | unsigned int tu_read : 1; | |
631 | ||
3019eac3 DE |
632 | /* The section this CU/TU lives in. |
633 | If the DIE refers to a DWO file, this is always the original die, | |
634 | not the DWO file. */ | |
8a0459fd | 635 | struct dwarf2_section_info *section; |
348e048f | 636 | |
17ea53c3 | 637 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
cc12ce38 DE |
638 | of the CU cache it gets reset to NULL again. This is left as NULL for |
639 | dummy CUs (a CU header, but nothing else). */ | |
ae038cb0 | 640 | struct dwarf2_cu *cu; |
1c379e20 | 641 | |
9cdd5dbd DE |
642 | /* The corresponding objfile. |
643 | Normally we can get the objfile from dwarf2_per_objfile. | |
644 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
645 | struct objfile *objfile; |
646 | ||
fffbe6a8 YQ |
647 | /* When dwarf2_per_objfile->using_index is true, the 'quick' field |
648 | is active. Otherwise, the 'psymtab' field is active. */ | |
9291a0cd TT |
649 | union |
650 | { | |
651 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 652 | or NULL for unread partial units. */ |
9291a0cd TT |
653 | struct partial_symtab *psymtab; |
654 | ||
655 | /* Data needed by the "quick" functions. */ | |
656 | struct dwarf2_per_cu_quick_data *quick; | |
657 | } v; | |
95554aad | 658 | |
796a7ff8 DE |
659 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
660 | while reading psymtabs, used to compute the psymtab dependencies, | |
661 | and then cleared. Then it is filled in again while reading full | |
662 | symbols, and only deleted when the objfile is destroyed. | |
663 | ||
664 | This is also used to work around a difference between the way gold | |
665 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
666 | is a gold bug. For symbols coming from TUs, gold records in the index | |
667 | the CU that includes the TU instead of the TU itself. This breaks | |
668 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
669 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
670 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
671 | we need to look in TU Z to find X. Fortunately, this is akin to | |
672 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
673 | .gdb_index version <=7 this also records the TUs that the CU referred | |
674 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
675 | indices so we only pay a price for gold generated indices. |
676 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 677 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
678 | }; |
679 | ||
348e048f DE |
680 | /* Entry in the signatured_types hash table. */ |
681 | ||
682 | struct signatured_type | |
683 | { | |
42e7ad6c | 684 | /* The "per_cu" object of this type. |
ac9ec31b | 685 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
686 | N.B.: This is the first member so that it's easy to convert pointers |
687 | between them. */ | |
688 | struct dwarf2_per_cu_data per_cu; | |
689 | ||
3019eac3 | 690 | /* The type's signature. */ |
348e048f DE |
691 | ULONGEST signature; |
692 | ||
3019eac3 | 693 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
694 | If this TU is a DWO stub and the definition lives in a DWO file |
695 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
696 | cu_offset type_offset_in_tu; |
697 | ||
698 | /* Offset in the section of the type's DIE. | |
699 | If the definition lives in a DWO file, this is the offset in the | |
700 | .debug_types.dwo section. | |
701 | The value is zero until the actual value is known. | |
702 | Zero is otherwise not a valid section offset. */ | |
703 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
704 | |
705 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
706 | can share them. This points to the containing symtab. */ | |
707 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
708 | |
709 | /* The type. | |
710 | The first time we encounter this type we fully read it in and install it | |
711 | in the symbol tables. Subsequent times we only need the type. */ | |
712 | struct type *type; | |
a2ce51a0 DE |
713 | |
714 | /* Containing DWO unit. | |
715 | This field is valid iff per_cu.reading_dwo_directly. */ | |
716 | struct dwo_unit *dwo_unit; | |
348e048f DE |
717 | }; |
718 | ||
0186c6a7 DE |
719 | typedef struct signatured_type *sig_type_ptr; |
720 | DEF_VEC_P (sig_type_ptr); | |
721 | ||
094b34ac DE |
722 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
723 | This includes type_unit_group and quick_file_names. */ | |
724 | ||
725 | struct stmt_list_hash | |
726 | { | |
727 | /* The DWO unit this table is from or NULL if there is none. */ | |
728 | struct dwo_unit *dwo_unit; | |
729 | ||
730 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 731 | sect_offset line_sect_off; |
094b34ac DE |
732 | }; |
733 | ||
f4dc4d17 DE |
734 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
735 | an object of this type. */ | |
736 | ||
737 | struct type_unit_group | |
738 | { | |
0186c6a7 | 739 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
740 | To simplify things we create an artificial CU that "includes" all the |
741 | type units using this stmt_list so that the rest of the code still has | |
742 | a "per_cu" handle on the symtab. | |
743 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 744 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
745 | struct dwarf2_per_cu_data per_cu; |
746 | ||
0186c6a7 DE |
747 | /* The TUs that share this DW_AT_stmt_list entry. |
748 | This is added to while parsing type units to build partial symtabs, | |
749 | and is deleted afterwards and not used again. */ | |
750 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 751 | |
43f3e411 | 752 | /* The compunit symtab. |
094b34ac | 753 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
754 | so we create an essentially anonymous symtab as the compunit symtab. */ |
755 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 756 | |
094b34ac DE |
757 | /* The data used to construct the hash key. */ |
758 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
759 | |
760 | /* The number of symtabs from the line header. | |
761 | The value here must match line_header.num_file_names. */ | |
762 | unsigned int num_symtabs; | |
763 | ||
764 | /* The symbol tables for this TU (obtained from the files listed in | |
765 | DW_AT_stmt_list). | |
766 | WARNING: The order of entries here must match the order of entries | |
767 | in the line header. After the first TU using this type_unit_group, the | |
768 | line header for the subsequent TUs is recreated from this. This is done | |
769 | because we need to use the same symtabs for each TU using the same | |
770 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
771 | there's no guarantee the line header doesn't have duplicate entries. */ | |
772 | struct symtab **symtabs; | |
773 | }; | |
774 | ||
73869dc2 | 775 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
776 | |
777 | struct dwo_sections | |
778 | { | |
779 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
780 | struct dwarf2_section_info line; |
781 | struct dwarf2_section_info loc; | |
43988095 | 782 | struct dwarf2_section_info loclists; |
09262596 DE |
783 | struct dwarf2_section_info macinfo; |
784 | struct dwarf2_section_info macro; | |
3019eac3 DE |
785 | struct dwarf2_section_info str; |
786 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
787 | /* In the case of a virtual DWO file, these two are unused. */ |
788 | struct dwarf2_section_info info; | |
3019eac3 DE |
789 | VEC (dwarf2_section_info_def) *types; |
790 | }; | |
791 | ||
c88ee1f0 | 792 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
793 | |
794 | struct dwo_unit | |
795 | { | |
796 | /* Backlink to the containing struct dwo_file. */ | |
797 | struct dwo_file *dwo_file; | |
798 | ||
799 | /* The "id" that distinguishes this CU/TU. | |
800 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
801 | Since signatures came first, we stick with it for consistency. */ | |
802 | ULONGEST signature; | |
803 | ||
804 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 805 | struct dwarf2_section_info *section; |
3019eac3 | 806 | |
9c541725 PA |
807 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
808 | sect_offset sect_off; | |
3019eac3 DE |
809 | unsigned int length; |
810 | ||
811 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
812 | cu_offset type_offset_in_tu; | |
813 | }; | |
814 | ||
73869dc2 DE |
815 | /* include/dwarf2.h defines the DWP section codes. |
816 | It defines a max value but it doesn't define a min value, which we | |
817 | use for error checking, so provide one. */ | |
818 | ||
819 | enum dwp_v2_section_ids | |
820 | { | |
821 | DW_SECT_MIN = 1 | |
822 | }; | |
823 | ||
80626a55 | 824 | /* Data for one DWO file. |
57d63ce2 DE |
825 | |
826 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
827 | appears in a DWP file). DWP files don't really have DWO files per se - | |
828 | comdat folding of types "loses" the DWO file they came from, and from | |
829 | a high level view DWP files appear to contain a mass of random types. | |
830 | However, to maintain consistency with the non-DWP case we pretend DWP | |
831 | files contain virtual DWO files, and we assign each TU with one virtual | |
832 | DWO file (generally based on the line and abbrev section offsets - | |
833 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
834 | |
835 | struct dwo_file | |
836 | { | |
0ac5b59e | 837 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
838 | For virtual DWO files the name is constructed from the section offsets |
839 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
840 | from related CU+TUs. */ | |
0ac5b59e DE |
841 | const char *dwo_name; |
842 | ||
843 | /* The DW_AT_comp_dir attribute. */ | |
844 | const char *comp_dir; | |
3019eac3 | 845 | |
80626a55 DE |
846 | /* The bfd, when the file is open. Otherwise this is NULL. |
847 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
848 | bfd *dbfd; | |
3019eac3 | 849 | |
73869dc2 DE |
850 | /* The sections that make up this DWO file. |
851 | Remember that for virtual DWO files in DWP V2, these are virtual | |
852 | sections (for lack of a better name). */ | |
3019eac3 DE |
853 | struct dwo_sections sections; |
854 | ||
19c3d4c9 DE |
855 | /* The CU in the file. |
856 | We only support one because having more than one requires hacking the | |
857 | dwo_name of each to match, which is highly unlikely to happen. | |
858 | Doing this means all TUs can share comp_dir: We also assume that | |
859 | DW_AT_comp_dir across all TUs in a DWO file will be identical. */ | |
860 | struct dwo_unit *cu; | |
3019eac3 DE |
861 | |
862 | /* Table of TUs in the file. | |
863 | Each element is a struct dwo_unit. */ | |
864 | htab_t tus; | |
865 | }; | |
866 | ||
80626a55 DE |
867 | /* These sections are what may appear in a DWP file. */ |
868 | ||
869 | struct dwp_sections | |
870 | { | |
73869dc2 | 871 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
872 | struct dwarf2_section_info str; |
873 | struct dwarf2_section_info cu_index; | |
874 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
875 | |
876 | /* These are only used by DWP version 2 files. | |
877 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
878 | sections are referenced by section number, and are not recorded here. | |
879 | In DWP version 2 there is at most one copy of all these sections, each | |
880 | section being (effectively) comprised of the concatenation of all of the | |
881 | individual sections that exist in the version 1 format. | |
882 | To keep the code simple we treat each of these concatenated pieces as a | |
883 | section itself (a virtual section?). */ | |
884 | struct dwarf2_section_info abbrev; | |
885 | struct dwarf2_section_info info; | |
886 | struct dwarf2_section_info line; | |
887 | struct dwarf2_section_info loc; | |
888 | struct dwarf2_section_info macinfo; | |
889 | struct dwarf2_section_info macro; | |
890 | struct dwarf2_section_info str_offsets; | |
891 | struct dwarf2_section_info types; | |
80626a55 DE |
892 | }; |
893 | ||
73869dc2 DE |
894 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
895 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 896 | |
73869dc2 | 897 | struct virtual_v1_dwo_sections |
80626a55 DE |
898 | { |
899 | struct dwarf2_section_info abbrev; | |
900 | struct dwarf2_section_info line; | |
901 | struct dwarf2_section_info loc; | |
902 | struct dwarf2_section_info macinfo; | |
903 | struct dwarf2_section_info macro; | |
904 | struct dwarf2_section_info str_offsets; | |
905 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 906 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
907 | struct dwarf2_section_info info_or_types; |
908 | }; | |
909 | ||
73869dc2 DE |
910 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
911 | In version 2, the sections of the DWO files are concatenated together | |
912 | and stored in one section of that name. Thus each ELF section contains | |
913 | several "virtual" sections. */ | |
914 | ||
915 | struct virtual_v2_dwo_sections | |
916 | { | |
917 | bfd_size_type abbrev_offset; | |
918 | bfd_size_type abbrev_size; | |
919 | ||
920 | bfd_size_type line_offset; | |
921 | bfd_size_type line_size; | |
922 | ||
923 | bfd_size_type loc_offset; | |
924 | bfd_size_type loc_size; | |
925 | ||
926 | bfd_size_type macinfo_offset; | |
927 | bfd_size_type macinfo_size; | |
928 | ||
929 | bfd_size_type macro_offset; | |
930 | bfd_size_type macro_size; | |
931 | ||
932 | bfd_size_type str_offsets_offset; | |
933 | bfd_size_type str_offsets_size; | |
934 | ||
935 | /* Each DWP hash table entry records one CU or one TU. | |
936 | That is recorded here, and copied to dwo_unit.section. */ | |
937 | bfd_size_type info_or_types_offset; | |
938 | bfd_size_type info_or_types_size; | |
939 | }; | |
940 | ||
80626a55 DE |
941 | /* Contents of DWP hash tables. */ |
942 | ||
943 | struct dwp_hash_table | |
944 | { | |
73869dc2 | 945 | uint32_t version, nr_columns; |
80626a55 | 946 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
947 | const gdb_byte *hash_table, *unit_table; |
948 | union | |
949 | { | |
950 | struct | |
951 | { | |
952 | const gdb_byte *indices; | |
953 | } v1; | |
954 | struct | |
955 | { | |
956 | /* This is indexed by column number and gives the id of the section | |
957 | in that column. */ | |
958 | #define MAX_NR_V2_DWO_SECTIONS \ | |
959 | (1 /* .debug_info or .debug_types */ \ | |
960 | + 1 /* .debug_abbrev */ \ | |
961 | + 1 /* .debug_line */ \ | |
962 | + 1 /* .debug_loc */ \ | |
963 | + 1 /* .debug_str_offsets */ \ | |
964 | + 1 /* .debug_macro or .debug_macinfo */) | |
965 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
966 | const gdb_byte *offsets; | |
967 | const gdb_byte *sizes; | |
968 | } v2; | |
969 | } section_pool; | |
80626a55 DE |
970 | }; |
971 | ||
972 | /* Data for one DWP file. */ | |
973 | ||
974 | struct dwp_file | |
975 | { | |
976 | /* Name of the file. */ | |
977 | const char *name; | |
978 | ||
73869dc2 DE |
979 | /* File format version. */ |
980 | int version; | |
981 | ||
93417882 | 982 | /* The bfd. */ |
80626a55 DE |
983 | bfd *dbfd; |
984 | ||
985 | /* Section info for this file. */ | |
986 | struct dwp_sections sections; | |
987 | ||
57d63ce2 | 988 | /* Table of CUs in the file. */ |
80626a55 DE |
989 | const struct dwp_hash_table *cus; |
990 | ||
991 | /* Table of TUs in the file. */ | |
992 | const struct dwp_hash_table *tus; | |
993 | ||
19ac8c2e DE |
994 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
995 | htab_t loaded_cus; | |
996 | htab_t loaded_tus; | |
80626a55 | 997 | |
73869dc2 DE |
998 | /* Table to map ELF section numbers to their sections. |
999 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
1000 | unsigned int num_sections; |
1001 | asection **elf_sections; | |
1002 | }; | |
1003 | ||
36586728 TT |
1004 | /* This represents a '.dwz' file. */ |
1005 | ||
1006 | struct dwz_file | |
1007 | { | |
1008 | /* A dwz file can only contain a few sections. */ | |
1009 | struct dwarf2_section_info abbrev; | |
1010 | struct dwarf2_section_info info; | |
1011 | struct dwarf2_section_info str; | |
1012 | struct dwarf2_section_info line; | |
1013 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 1014 | struct dwarf2_section_info gdb_index; |
36586728 TT |
1015 | |
1016 | /* The dwz's BFD. */ | |
1017 | bfd *dwz_bfd; | |
1018 | }; | |
1019 | ||
0963b4bd MS |
1020 | /* Struct used to pass misc. parameters to read_die_and_children, et |
1021 | al. which are used for both .debug_info and .debug_types dies. | |
1022 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 1023 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
1024 | |
1025 | struct die_reader_specs | |
1026 | { | |
a32a8923 | 1027 | /* The bfd of die_section. */ |
93311388 DE |
1028 | bfd* abfd; |
1029 | ||
1030 | /* The CU of the DIE we are parsing. */ | |
1031 | struct dwarf2_cu *cu; | |
1032 | ||
80626a55 | 1033 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1034 | struct dwo_file *dwo_file; |
1035 | ||
dee91e82 | 1036 | /* The section the die comes from. |
3019eac3 | 1037 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1038 | struct dwarf2_section_info *die_section; |
1039 | ||
1040 | /* die_section->buffer. */ | |
d521ce57 | 1041 | const gdb_byte *buffer; |
f664829e DE |
1042 | |
1043 | /* The end of the buffer. */ | |
1044 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1045 | |
1046 | /* The value of the DW_AT_comp_dir attribute. */ | |
1047 | const char *comp_dir; | |
93311388 DE |
1048 | }; |
1049 | ||
fd820528 | 1050 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1051 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1052 | const gdb_byte *info_ptr, |
dee91e82 DE |
1053 | struct die_info *comp_unit_die, |
1054 | int has_children, | |
1055 | void *data); | |
1056 | ||
ecfb656c PA |
1057 | /* A 1-based directory index. This is a strong typedef to prevent |
1058 | accidentally using a directory index as a 0-based index into an | |
1059 | array/vector. */ | |
1060 | enum class dir_index : unsigned int {}; | |
1061 | ||
1062 | /* Likewise, a 1-based file name index. */ | |
1063 | enum class file_name_index : unsigned int {}; | |
1064 | ||
52059ffd TT |
1065 | struct file_entry |
1066 | { | |
fff8551c PA |
1067 | file_entry () = default; |
1068 | ||
ecfb656c | 1069 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
1070 | unsigned int mod_time_, unsigned int length_) |
1071 | : name (name_), | |
ecfb656c | 1072 | d_index (d_index_), |
fff8551c PA |
1073 | mod_time (mod_time_), |
1074 | length (length_) | |
1075 | {} | |
1076 | ||
ecfb656c PA |
1077 | /* Return the include directory at D_INDEX stored in LH. Returns |
1078 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
1079 | const char *include_dir (const line_header *lh) const; |
1080 | ||
fff8551c PA |
1081 | /* The file name. Note this is an observing pointer. The memory is |
1082 | owned by debug_line_buffer. */ | |
1083 | const char *name {}; | |
1084 | ||
8c43009f | 1085 | /* The directory index (1-based). */ |
ecfb656c | 1086 | dir_index d_index {}; |
fff8551c PA |
1087 | |
1088 | unsigned int mod_time {}; | |
1089 | ||
1090 | unsigned int length {}; | |
1091 | ||
1092 | /* True if referenced by the Line Number Program. */ | |
1093 | bool included_p {}; | |
1094 | ||
83769d0b | 1095 | /* The associated symbol table, if any. */ |
fff8551c | 1096 | struct symtab *symtab {}; |
52059ffd TT |
1097 | }; |
1098 | ||
debd256d JB |
1099 | /* The line number information for a compilation unit (found in the |
1100 | .debug_line section) begins with a "statement program header", | |
1101 | which contains the following information. */ | |
1102 | struct line_header | |
1103 | { | |
fff8551c PA |
1104 | line_header () |
1105 | : offset_in_dwz {} | |
1106 | {} | |
1107 | ||
1108 | /* Add an entry to the include directory table. */ | |
1109 | void add_include_dir (const char *include_dir); | |
1110 | ||
1111 | /* Add an entry to the file name table. */ | |
ecfb656c | 1112 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
1113 | unsigned int mod_time, unsigned int length); |
1114 | ||
ecfb656c | 1115 | /* Return the include dir at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1116 | is out of bounds. */ |
ecfb656c | 1117 | const char *include_dir_at (dir_index index) const |
8c43009f | 1118 | { |
ecfb656c PA |
1119 | /* Convert directory index number (1-based) to vector index |
1120 | (0-based). */ | |
1121 | size_t vec_index = to_underlying (index) - 1; | |
1122 | ||
1123 | if (vec_index >= include_dirs.size ()) | |
8c43009f | 1124 | return NULL; |
ecfb656c | 1125 | return include_dirs[vec_index]; |
8c43009f PA |
1126 | } |
1127 | ||
ecfb656c | 1128 | /* Return the file name at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1129 | is out of bounds. */ |
ecfb656c | 1130 | file_entry *file_name_at (file_name_index index) |
8c43009f | 1131 | { |
ecfb656c PA |
1132 | /* Convert file name index number (1-based) to vector index |
1133 | (0-based). */ | |
1134 | size_t vec_index = to_underlying (index) - 1; | |
1135 | ||
1136 | if (vec_index >= file_names.size ()) | |
fff8551c | 1137 | return NULL; |
ecfb656c | 1138 | return &file_names[vec_index]; |
fff8551c PA |
1139 | } |
1140 | ||
1141 | /* Const version of the above. */ | |
1142 | const file_entry *file_name_at (unsigned int index) const | |
1143 | { | |
1144 | if (index >= file_names.size ()) | |
8c43009f PA |
1145 | return NULL; |
1146 | return &file_names[index]; | |
1147 | } | |
1148 | ||
527f3840 | 1149 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1150 | sect_offset sect_off {}; |
527f3840 JK |
1151 | |
1152 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1153 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1154 | ||
1155 | unsigned int total_length {}; | |
1156 | unsigned short version {}; | |
1157 | unsigned int header_length {}; | |
1158 | unsigned char minimum_instruction_length {}; | |
1159 | unsigned char maximum_ops_per_instruction {}; | |
1160 | unsigned char default_is_stmt {}; | |
1161 | int line_base {}; | |
1162 | unsigned char line_range {}; | |
1163 | unsigned char opcode_base {}; | |
debd256d JB |
1164 | |
1165 | /* standard_opcode_lengths[i] is the number of operands for the | |
1166 | standard opcode whose value is i. This means that | |
1167 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1168 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1169 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1170 | |
fff8551c PA |
1171 | /* The include_directories table. Note these are observing |
1172 | pointers. The memory is owned by debug_line_buffer. */ | |
1173 | std::vector<const char *> include_dirs; | |
debd256d | 1174 | |
fff8551c PA |
1175 | /* The file_names table. */ |
1176 | std::vector<file_entry> file_names; | |
debd256d JB |
1177 | |
1178 | /* The start and end of the statement program following this | |
6502dd73 | 1179 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1180 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
debd256d | 1181 | }; |
c906108c | 1182 | |
fff8551c PA |
1183 | typedef std::unique_ptr<line_header> line_header_up; |
1184 | ||
8c43009f PA |
1185 | const char * |
1186 | file_entry::include_dir (const line_header *lh) const | |
1187 | { | |
ecfb656c | 1188 | return lh->include_dir_at (d_index); |
8c43009f PA |
1189 | } |
1190 | ||
c906108c | 1191 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1192 | need this much information. */ |
c906108c SS |
1193 | struct partial_die_info |
1194 | { | |
72bf9492 | 1195 | /* Offset of this DIE. */ |
9c541725 | 1196 | sect_offset sect_off; |
72bf9492 DJ |
1197 | |
1198 | /* DWARF-2 tag for this DIE. */ | |
1199 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1200 | ||
72bf9492 DJ |
1201 | /* Assorted flags describing the data found in this DIE. */ |
1202 | unsigned int has_children : 1; | |
1203 | unsigned int is_external : 1; | |
1204 | unsigned int is_declaration : 1; | |
1205 | unsigned int has_type : 1; | |
1206 | unsigned int has_specification : 1; | |
1207 | unsigned int has_pc_info : 1; | |
481860b3 | 1208 | unsigned int may_be_inlined : 1; |
72bf9492 | 1209 | |
0c1b455e TT |
1210 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1211 | unsigned int main_subprogram : 1; | |
1212 | ||
72bf9492 DJ |
1213 | /* Flag set if the SCOPE field of this structure has been |
1214 | computed. */ | |
1215 | unsigned int scope_set : 1; | |
1216 | ||
fa4028e9 JB |
1217 | /* Flag set if the DIE has a byte_size attribute. */ |
1218 | unsigned int has_byte_size : 1; | |
1219 | ||
ff908ebf AW |
1220 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1221 | unsigned int has_const_value : 1; | |
1222 | ||
98bfdba5 PA |
1223 | /* Flag set if any of the DIE's children are template arguments. */ |
1224 | unsigned int has_template_arguments : 1; | |
1225 | ||
abc72ce4 DE |
1226 | /* Flag set if fixup_partial_die has been called on this die. */ |
1227 | unsigned int fixup_called : 1; | |
1228 | ||
36586728 TT |
1229 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1230 | unsigned int is_dwz : 1; | |
1231 | ||
1232 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1233 | unsigned int spec_is_dwz : 1; | |
1234 | ||
72bf9492 | 1235 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1236 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1237 | const char *name; |
72bf9492 | 1238 | |
abc72ce4 DE |
1239 | /* The linkage name, if present. */ |
1240 | const char *linkage_name; | |
1241 | ||
72bf9492 DJ |
1242 | /* The scope to prepend to our children. This is generally |
1243 | allocated on the comp_unit_obstack, so will disappear | |
1244 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1245 | const char *scope; |
72bf9492 | 1246 | |
95554aad TT |
1247 | /* Some data associated with the partial DIE. The tag determines |
1248 | which field is live. */ | |
1249 | union | |
1250 | { | |
1251 | /* The location description associated with this DIE, if any. */ | |
1252 | struct dwarf_block *locdesc; | |
1253 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1254 | sect_offset sect_off; |
95554aad | 1255 | } d; |
72bf9492 DJ |
1256 | |
1257 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1258 | CORE_ADDR lowpc; |
1259 | CORE_ADDR highpc; | |
72bf9492 | 1260 | |
93311388 | 1261 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1262 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1263 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1264 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1265 | const gdb_byte *sibling; |
72bf9492 DJ |
1266 | |
1267 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1268 | DW_AT_specification (or DW_AT_abstract_origin or | |
1269 | DW_AT_extension). */ | |
b64f50a1 | 1270 | sect_offset spec_offset; |
72bf9492 DJ |
1271 | |
1272 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1273 | if any. */ | |
1274 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1275 | }; |
1276 | ||
0963b4bd | 1277 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1278 | struct abbrev_info |
1279 | { | |
1280 | unsigned int number; /* number identifying abbrev */ | |
1281 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1282 | unsigned short has_children; /* boolean */ |
1283 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1284 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1285 | struct abbrev_info *next; /* next in chain */ | |
1286 | }; | |
1287 | ||
1288 | struct attr_abbrev | |
1289 | { | |
9d25dd43 DE |
1290 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1291 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1292 | |
1293 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1294 | LONGEST implicit_const; | |
c906108c SS |
1295 | }; |
1296 | ||
433df2d4 DE |
1297 | /* Size of abbrev_table.abbrev_hash_table. */ |
1298 | #define ABBREV_HASH_SIZE 121 | |
1299 | ||
1300 | /* Top level data structure to contain an abbreviation table. */ | |
1301 | ||
1302 | struct abbrev_table | |
1303 | { | |
f4dc4d17 DE |
1304 | /* Where the abbrev table came from. |
1305 | This is used as a sanity check when the table is used. */ | |
9c541725 | 1306 | sect_offset sect_off; |
433df2d4 DE |
1307 | |
1308 | /* Storage for the abbrev table. */ | |
1309 | struct obstack abbrev_obstack; | |
1310 | ||
1311 | /* Hash table of abbrevs. | |
1312 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1313 | It could be statically allocated, but the previous code didn't so we | |
1314 | don't either. */ | |
1315 | struct abbrev_info **abbrevs; | |
1316 | }; | |
1317 | ||
0963b4bd | 1318 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1319 | struct attribute |
1320 | { | |
9d25dd43 | 1321 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1322 | ENUM_BITFIELD(dwarf_form) form : 15; |
1323 | ||
1324 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1325 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1326 | here for better struct attribute alignment. */ | |
1327 | unsigned int string_is_canonical : 1; | |
1328 | ||
b60c80d6 DJ |
1329 | union |
1330 | { | |
15d034d0 | 1331 | const char *str; |
b60c80d6 | 1332 | struct dwarf_block *blk; |
43bbcdc2 PH |
1333 | ULONGEST unsnd; |
1334 | LONGEST snd; | |
b60c80d6 | 1335 | CORE_ADDR addr; |
ac9ec31b | 1336 | ULONGEST signature; |
b60c80d6 DJ |
1337 | } |
1338 | u; | |
1339 | }; | |
1340 | ||
0963b4bd | 1341 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1342 | struct die_info |
1343 | { | |
76815b17 DE |
1344 | /* DWARF-2 tag for this DIE. */ |
1345 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1346 | ||
1347 | /* Number of attributes */ | |
98bfdba5 PA |
1348 | unsigned char num_attrs; |
1349 | ||
1350 | /* True if we're presently building the full type name for the | |
1351 | type derived from this DIE. */ | |
1352 | unsigned char building_fullname : 1; | |
76815b17 | 1353 | |
adde2bff DE |
1354 | /* True if this die is in process. PR 16581. */ |
1355 | unsigned char in_process : 1; | |
1356 | ||
76815b17 DE |
1357 | /* Abbrev number */ |
1358 | unsigned int abbrev; | |
1359 | ||
93311388 | 1360 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1361 | sect_offset sect_off; |
78ba4af6 JB |
1362 | |
1363 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1364 | points to this die's parent; CHILD points to the first child of | |
1365 | this node; and all the children of a given node are chained | |
4950bc1c | 1366 | together via their SIBLING fields. */ |
639d11d3 DC |
1367 | struct die_info *child; /* Its first child, if any. */ |
1368 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1369 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1370 | |
b60c80d6 DJ |
1371 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1372 | zero, but it's not common and zero-sized arrays are not | |
1373 | sufficiently portable C. */ | |
1374 | struct attribute attrs[1]; | |
c906108c SS |
1375 | }; |
1376 | ||
0963b4bd | 1377 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1378 | |
1379 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1380 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1381 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1382 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1383 | #define DW_SND(attr) ((attr)->u.snd) | |
1384 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1385 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1386 | |
0963b4bd | 1387 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1388 | struct dwarf_block |
1389 | { | |
56eb65bd | 1390 | size_t size; |
1d6edc3c JK |
1391 | |
1392 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1393 | const gdb_byte *data; |
c906108c SS |
1394 | }; |
1395 | ||
c906108c SS |
1396 | #ifndef ATTR_ALLOC_CHUNK |
1397 | #define ATTR_ALLOC_CHUNK 4 | |
1398 | #endif | |
1399 | ||
c906108c SS |
1400 | /* Allocate fields for structs, unions and enums in this size. */ |
1401 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1402 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1403 | #endif | |
1404 | ||
c906108c SS |
1405 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1406 | but this would require a corresponding change in unpack_field_as_long | |
1407 | and friends. */ | |
1408 | static int bits_per_byte = 8; | |
1409 | ||
52059ffd TT |
1410 | struct nextfield |
1411 | { | |
1412 | struct nextfield *next; | |
1413 | int accessibility; | |
1414 | int virtuality; | |
1415 | struct field field; | |
1416 | }; | |
1417 | ||
1418 | struct nextfnfield | |
1419 | { | |
1420 | struct nextfnfield *next; | |
1421 | struct fn_field fnfield; | |
1422 | }; | |
1423 | ||
1424 | struct fnfieldlist | |
1425 | { | |
1426 | const char *name; | |
1427 | int length; | |
1428 | struct nextfnfield *head; | |
1429 | }; | |
1430 | ||
1431 | struct typedef_field_list | |
1432 | { | |
1433 | struct typedef_field field; | |
1434 | struct typedef_field_list *next; | |
1435 | }; | |
1436 | ||
c906108c SS |
1437 | /* The routines that read and process dies for a C struct or C++ class |
1438 | pass lists of data member fields and lists of member function fields | |
1439 | in an instance of a field_info structure, as defined below. */ | |
1440 | struct field_info | |
c5aa993b | 1441 | { |
0963b4bd | 1442 | /* List of data member and baseclasses fields. */ |
52059ffd | 1443 | struct nextfield *fields, *baseclasses; |
c906108c | 1444 | |
7d0ccb61 | 1445 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1446 | int nfields; |
c906108c | 1447 | |
c5aa993b JM |
1448 | /* Number of baseclasses. */ |
1449 | int nbaseclasses; | |
c906108c | 1450 | |
c5aa993b JM |
1451 | /* Set if the accesibility of one of the fields is not public. */ |
1452 | int non_public_fields; | |
c906108c | 1453 | |
c5aa993b JM |
1454 | /* Member function fields array, entries are allocated in the order they |
1455 | are encountered in the object file. */ | |
52059ffd | 1456 | struct nextfnfield *fnfields; |
c906108c | 1457 | |
c5aa993b JM |
1458 | /* Member function fieldlist array, contains name of possibly overloaded |
1459 | member function, number of overloaded member functions and a pointer | |
1460 | to the head of the member function field chain. */ | |
52059ffd | 1461 | struct fnfieldlist *fnfieldlists; |
c906108c | 1462 | |
c5aa993b JM |
1463 | /* Number of entries in the fnfieldlists array. */ |
1464 | int nfnfields; | |
98751a41 JK |
1465 | |
1466 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1467 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
52059ffd | 1468 | struct typedef_field_list *typedef_field_list; |
98751a41 | 1469 | unsigned typedef_field_list_count; |
c5aa993b | 1470 | }; |
c906108c | 1471 | |
10b3939b DJ |
1472 | /* One item on the queue of compilation units to read in full symbols |
1473 | for. */ | |
1474 | struct dwarf2_queue_item | |
1475 | { | |
1476 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1477 | enum language pretend_language; |
10b3939b DJ |
1478 | struct dwarf2_queue_item *next; |
1479 | }; | |
1480 | ||
1481 | /* The current queue. */ | |
1482 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1483 | ||
ae038cb0 DJ |
1484 | /* Loaded secondary compilation units are kept in memory until they |
1485 | have not been referenced for the processing of this many | |
1486 | compilation units. Set this to zero to disable caching. Cache | |
1487 | sizes of up to at least twenty will improve startup time for | |
1488 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1489 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1490 | static void |
b4f54984 DE |
1491 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1492 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1493 | { |
3e43a32a | 1494 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1495 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1496 | value); |
1497 | } | |
4390d890 | 1498 | \f |
c906108c SS |
1499 | /* local function prototypes */ |
1500 | ||
a32a8923 DE |
1501 | static const char *get_section_name (const struct dwarf2_section_info *); |
1502 | ||
1503 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1504 | ||
4efb68b1 | 1505 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1506 | |
918dd910 JK |
1507 | static void dwarf2_find_base_address (struct die_info *die, |
1508 | struct dwarf2_cu *cu); | |
1509 | ||
0018ea6f DE |
1510 | static struct partial_symtab *create_partial_symtab |
1511 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1512 | ||
c67a9c90 | 1513 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1514 | |
72bf9492 DJ |
1515 | static void scan_partial_symbols (struct partial_die_info *, |
1516 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1517 | int, struct dwarf2_cu *); |
c906108c | 1518 | |
72bf9492 DJ |
1519 | static void add_partial_symbol (struct partial_die_info *, |
1520 | struct dwarf2_cu *); | |
63d06c5c | 1521 | |
72bf9492 DJ |
1522 | static void add_partial_namespace (struct partial_die_info *pdi, |
1523 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1524 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1525 | |
5d7cb8df | 1526 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1527 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1528 | struct dwarf2_cu *cu); |
1529 | ||
72bf9492 DJ |
1530 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1531 | struct dwarf2_cu *cu); | |
91c24f0a | 1532 | |
bc30ff58 JB |
1533 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1534 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1535 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1536 | |
257e7a09 YQ |
1537 | static void dwarf2_read_symtab (struct partial_symtab *, |
1538 | struct objfile *); | |
c906108c | 1539 | |
a14ed312 | 1540 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1541 | |
433df2d4 DE |
1542 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1543 | (const struct abbrev_table *, unsigned int); | |
1544 | ||
1545 | static struct abbrev_table *abbrev_table_read_table | |
1546 | (struct dwarf2_section_info *, sect_offset); | |
1547 | ||
1548 | static void abbrev_table_free (struct abbrev_table *); | |
1549 | ||
f4dc4d17 DE |
1550 | static void abbrev_table_free_cleanup (void *); |
1551 | ||
dee91e82 DE |
1552 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1553 | struct dwarf2_section_info *); | |
c906108c | 1554 | |
f3dd6933 | 1555 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1556 | |
d521ce57 | 1557 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1558 | |
dee91e82 | 1559 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1560 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1561 | |
d521ce57 TT |
1562 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1563 | struct partial_die_info *, | |
1564 | struct abbrev_info *, | |
1565 | unsigned int, | |
1566 | const gdb_byte *); | |
c906108c | 1567 | |
36586728 | 1568 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1569 | struct dwarf2_cu *); |
72bf9492 DJ |
1570 | |
1571 | static void fixup_partial_die (struct partial_die_info *, | |
1572 | struct dwarf2_cu *); | |
1573 | ||
d521ce57 TT |
1574 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1575 | struct attribute *, struct attr_abbrev *, | |
1576 | const gdb_byte *); | |
a8329558 | 1577 | |
a1855c1d | 1578 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1579 | |
a1855c1d | 1580 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1581 | |
a1855c1d | 1582 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1583 | |
a1855c1d | 1584 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1585 | |
a1855c1d | 1586 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1587 | |
d521ce57 | 1588 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1589 | unsigned int *); |
c906108c | 1590 | |
d521ce57 | 1591 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1592 | |
1593 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1594 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1595 | unsigned int *, unsigned int *); |
613e1657 | 1596 | |
d521ce57 TT |
1597 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1598 | const struct comp_unit_head *, | |
c764a876 DE |
1599 | unsigned int *); |
1600 | ||
d521ce57 | 1601 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1602 | |
f4dc4d17 DE |
1603 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1604 | sect_offset); | |
1605 | ||
d521ce57 | 1606 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1607 | |
d521ce57 | 1608 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1609 | |
d521ce57 TT |
1610 | static const char *read_indirect_string (bfd *, const gdb_byte *, |
1611 | const struct comp_unit_head *, | |
1612 | unsigned int *); | |
4bdf3d34 | 1613 | |
43988095 JK |
1614 | static const char *read_indirect_line_string (bfd *, const gdb_byte *, |
1615 | const struct comp_unit_head *, | |
1616 | unsigned int *); | |
36586728 | 1617 | |
43988095 | 1618 | static const char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
c906108c | 1619 | |
d521ce57 | 1620 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1621 | |
d521ce57 TT |
1622 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1623 | const gdb_byte *, | |
3019eac3 DE |
1624 | unsigned int *); |
1625 | ||
d521ce57 | 1626 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1627 | ULONGEST str_index); |
3019eac3 | 1628 | |
e142c38c | 1629 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1630 | |
e142c38c DJ |
1631 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1632 | struct dwarf2_cu *); | |
c906108c | 1633 | |
348e048f | 1634 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1635 | unsigned int); |
348e048f | 1636 | |
7d45c7c3 KB |
1637 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1638 | struct dwarf2_cu *cu); | |
1639 | ||
05cf31d1 JB |
1640 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1641 | struct dwarf2_cu *cu); | |
1642 | ||
e142c38c | 1643 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1644 | |
e142c38c | 1645 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1646 | struct dwarf2_cu **); |
63d06c5c | 1647 | |
9c541725 | 1648 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1649 | struct dwarf2_cu *cu); |
debd256d | 1650 | |
f3f5162e | 1651 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1652 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1653 | CORE_ADDR, int decode_mapping); |
c906108c | 1654 | |
4d663531 | 1655 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1656 | |
43f3e411 DE |
1657 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1658 | const char *, const char *, | |
1659 | CORE_ADDR); | |
f4dc4d17 | 1660 | |
a14ed312 | 1661 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1662 | struct dwarf2_cu *); |
c906108c | 1663 | |
34eaf542 TT |
1664 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1665 | struct dwarf2_cu *, struct symbol *); | |
1666 | ||
ff39bb5e | 1667 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1668 | struct dwarf2_cu *); |
c906108c | 1669 | |
ff39bb5e | 1670 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1671 | struct type *type, |
1672 | const char *name, | |
1673 | struct obstack *obstack, | |
12df843f | 1674 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1675 | const gdb_byte **bytes, |
98bfdba5 | 1676 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1677 | |
e7c27a73 | 1678 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1679 | |
b4ba55a1 JB |
1680 | static int need_gnat_info (struct dwarf2_cu *); |
1681 | ||
3e43a32a MS |
1682 | static struct type *die_descriptive_type (struct die_info *, |
1683 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1684 | |
1685 | static void set_descriptive_type (struct type *, struct die_info *, | |
1686 | struct dwarf2_cu *); | |
1687 | ||
e7c27a73 DJ |
1688 | static struct type *die_containing_type (struct die_info *, |
1689 | struct dwarf2_cu *); | |
c906108c | 1690 | |
ff39bb5e | 1691 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1692 | struct dwarf2_cu *); |
c906108c | 1693 | |
f792889a | 1694 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1695 | |
673bfd45 DE |
1696 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1697 | ||
0d5cff50 | 1698 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1699 | |
6e70227d | 1700 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1701 | const char *suffix, int physname, |
1702 | struct dwarf2_cu *cu); | |
63d06c5c | 1703 | |
e7c27a73 | 1704 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1705 | |
348e048f DE |
1706 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1707 | ||
e7c27a73 | 1708 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1709 | |
e7c27a73 | 1710 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1711 | |
96408a79 SA |
1712 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1713 | ||
ff013f42 JK |
1714 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1715 | struct dwarf2_cu *, struct partial_symtab *); | |
1716 | ||
3a2b436a | 1717 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1718 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1719 | enum pc_bounds_kind |
1720 | { | |
e385593e | 1721 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1722 | PC_BOUNDS_NOT_PRESENT, |
1723 | ||
e385593e JK |
1724 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1725 | were present but they do not form a valid range of PC addresses. */ | |
1726 | PC_BOUNDS_INVALID, | |
1727 | ||
3a2b436a JK |
1728 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1729 | PC_BOUNDS_RANGES, | |
1730 | ||
1731 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1732 | PC_BOUNDS_HIGH_LOW, | |
1733 | }; | |
1734 | ||
1735 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1736 | CORE_ADDR *, CORE_ADDR *, | |
1737 | struct dwarf2_cu *, | |
1738 | struct partial_symtab *); | |
c906108c | 1739 | |
fae299cd DC |
1740 | static void get_scope_pc_bounds (struct die_info *, |
1741 | CORE_ADDR *, CORE_ADDR *, | |
1742 | struct dwarf2_cu *); | |
1743 | ||
801e3a5b JB |
1744 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1745 | CORE_ADDR, struct dwarf2_cu *); | |
1746 | ||
a14ed312 | 1747 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1748 | struct dwarf2_cu *); |
c906108c | 1749 | |
a14ed312 | 1750 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1751 | struct type *, struct dwarf2_cu *); |
c906108c | 1752 | |
a14ed312 | 1753 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1754 | struct die_info *, struct type *, |
e7c27a73 | 1755 | struct dwarf2_cu *); |
c906108c | 1756 | |
a14ed312 | 1757 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1758 | struct type *, |
1759 | struct dwarf2_cu *); | |
c906108c | 1760 | |
134d01f1 | 1761 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1762 | |
e7c27a73 | 1763 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1764 | |
e7c27a73 | 1765 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1766 | |
5d7cb8df JK |
1767 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1768 | ||
22cee43f PMR |
1769 | static struct using_direct **using_directives (enum language); |
1770 | ||
27aa8d6a SW |
1771 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1772 | ||
74921315 KS |
1773 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1774 | ||
f55ee35c JK |
1775 | static struct type *read_module_type (struct die_info *die, |
1776 | struct dwarf2_cu *cu); | |
1777 | ||
38d518c9 | 1778 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1779 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1780 | |
134d01f1 | 1781 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1782 | |
e7c27a73 | 1783 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1784 | |
6e70227d | 1785 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1786 | struct dwarf2_cu *); |
1787 | ||
bf6af496 | 1788 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1789 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1790 | struct die_info *); |
639d11d3 | 1791 | |
dee91e82 | 1792 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1793 | const gdb_byte *info_ptr, |
1794 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1795 | struct die_info *parent); |
1796 | ||
d521ce57 TT |
1797 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1798 | struct die_info **, const gdb_byte *, | |
1799 | int *, int); | |
3019eac3 | 1800 | |
d521ce57 TT |
1801 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1802 | struct die_info **, const gdb_byte *, | |
1803 | int *); | |
93311388 | 1804 | |
e7c27a73 | 1805 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1806 | |
15d034d0 TT |
1807 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1808 | struct obstack *); | |
71c25dea | 1809 | |
15d034d0 | 1810 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1811 | |
15d034d0 | 1812 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1813 | struct die_info *die, |
1814 | struct dwarf2_cu *cu); | |
1815 | ||
ca69b9e6 DE |
1816 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1817 | struct dwarf2_cu *cu); | |
1818 | ||
e142c38c | 1819 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1820 | struct dwarf2_cu **); |
9219021c | 1821 | |
f39c6ffd | 1822 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1823 | |
f39c6ffd | 1824 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1825 | |
f39c6ffd | 1826 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1827 | |
a121b7c1 | 1828 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1829 | |
f39c6ffd | 1830 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1831 | |
f9aca02d | 1832 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1833 | |
d97bc12b DE |
1834 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1835 | ||
1836 | static void dump_die_for_error (struct die_info *); | |
1837 | ||
1838 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1839 | struct die_info *); | |
c906108c | 1840 | |
d97bc12b | 1841 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1842 | |
51545339 | 1843 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1844 | struct dwarf2_cu *); |
c906108c | 1845 | |
ff39bb5e | 1846 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1847 | |
ff39bb5e | 1848 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1849 | |
348e048f | 1850 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1851 | const struct attribute *, |
348e048f DE |
1852 | struct dwarf2_cu **); |
1853 | ||
10b3939b | 1854 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1855 | const struct attribute *, |
f2f0e013 | 1856 | struct dwarf2_cu **); |
c906108c | 1857 | |
348e048f | 1858 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1859 | const struct attribute *, |
348e048f DE |
1860 | struct dwarf2_cu **); |
1861 | ||
ac9ec31b DE |
1862 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1863 | struct dwarf2_cu *); | |
1864 | ||
1865 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1866 | const struct attribute *, |
ac9ec31b DE |
1867 | struct dwarf2_cu *); |
1868 | ||
e5fe5e75 | 1869 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1870 | |
52dc124a | 1871 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1872 | |
63e43d3a PMR |
1873 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1874 | struct die_info *die, struct dwarf2_cu *cu, | |
1875 | struct dynamic_prop *prop); | |
1876 | ||
c906108c SS |
1877 | /* memory allocation interface */ |
1878 | ||
7b5a2f43 | 1879 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1880 | |
b60c80d6 | 1881 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1882 | |
43f3e411 | 1883 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1884 | |
6e5a29e1 | 1885 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1886 | |
6e5a29e1 | 1887 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1888 | |
6e5a29e1 | 1889 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1890 | |
6e5a29e1 | 1891 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1892 | |
8cf6f0b1 TT |
1893 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1894 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1895 | const struct attribute *attr); |
8cf6f0b1 | 1896 | |
ff39bb5e | 1897 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1898 | struct symbol *sym, |
f1e6e072 TT |
1899 | struct dwarf2_cu *cu, |
1900 | int is_block); | |
4c2df51b | 1901 | |
d521ce57 TT |
1902 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1903 | const gdb_byte *info_ptr, | |
1904 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1905 | |
72bf9492 DJ |
1906 | static void free_stack_comp_unit (void *); |
1907 | ||
72bf9492 DJ |
1908 | static hashval_t partial_die_hash (const void *item); |
1909 | ||
1910 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1911 | ||
ae038cb0 | 1912 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
9c541725 | 1913 | (sect_offset sect_off, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1914 | |
9816fde3 | 1915 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1916 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1917 | |
1918 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1919 | struct die_info *comp_unit_die, |
1920 | enum language pretend_language); | |
93311388 | 1921 | |
68dc6402 | 1922 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1923 | |
1924 | static void free_cached_comp_units (void *); | |
1925 | ||
1926 | static void age_cached_comp_units (void); | |
1927 | ||
dee91e82 | 1928 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1929 | |
f792889a DJ |
1930 | static struct type *set_die_type (struct die_info *, struct type *, |
1931 | struct dwarf2_cu *); | |
1c379e20 | 1932 | |
ae038cb0 DJ |
1933 | static void create_all_comp_units (struct objfile *); |
1934 | ||
0e50663e | 1935 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1936 | |
95554aad TT |
1937 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1938 | enum language); | |
10b3939b | 1939 | |
95554aad TT |
1940 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1941 | enum language); | |
10b3939b | 1942 | |
f4dc4d17 DE |
1943 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1944 | enum language); | |
1945 | ||
10b3939b DJ |
1946 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1947 | struct dwarf2_per_cu_data *); | |
1948 | ||
ae038cb0 DJ |
1949 | static void dwarf2_mark (struct dwarf2_cu *); |
1950 | ||
1951 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1952 | ||
b64f50a1 | 1953 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1954 | struct dwarf2_per_cu_data *); |
673bfd45 | 1955 | |
f792889a | 1956 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1957 | |
9291a0cd TT |
1958 | static void dwarf2_release_queue (void *dummy); |
1959 | ||
95554aad TT |
1960 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1961 | enum language pretend_language); | |
1962 | ||
a0f42c21 | 1963 | static void process_queue (void); |
9291a0cd | 1964 | |
d721ba37 PA |
1965 | /* The return type of find_file_and_directory. Note, the enclosed |
1966 | string pointers are only valid while this object is valid. */ | |
1967 | ||
1968 | struct file_and_directory | |
1969 | { | |
1970 | /* The filename. This is never NULL. */ | |
1971 | const char *name; | |
1972 | ||
1973 | /* The compilation directory. NULL if not known. If we needed to | |
1974 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1975 | points directly to the DW_AT_comp_dir string attribute owned by | |
1976 | the obstack that owns the DIE. */ | |
1977 | const char *comp_dir; | |
1978 | ||
1979 | /* If we needed to build a new string for comp_dir, this is what | |
1980 | owns the storage. */ | |
1981 | std::string comp_dir_storage; | |
1982 | }; | |
1983 | ||
1984 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1985 | struct dwarf2_cu *cu); | |
9291a0cd TT |
1986 | |
1987 | static char *file_full_name (int file, struct line_header *lh, | |
1988 | const char *comp_dir); | |
1989 | ||
43988095 JK |
1990 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1991 | enum class rcuh_kind { COMPILE, TYPE }; | |
1992 | ||
d521ce57 | 1993 | static const gdb_byte *read_and_check_comp_unit_head |
36586728 TT |
1994 | (struct comp_unit_head *header, |
1995 | struct dwarf2_section_info *section, | |
d521ce57 | 1996 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 1997 | rcuh_kind section_kind); |
36586728 | 1998 | |
fd820528 | 1999 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
2000 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
2001 | int use_existing_cu, int keep, | |
3019eac3 DE |
2002 | die_reader_func_ftype *die_reader_func, void *data); |
2003 | ||
dee91e82 DE |
2004 | static void init_cutu_and_read_dies_simple |
2005 | (struct dwarf2_per_cu_data *this_cu, | |
2006 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 2007 | |
673bfd45 | 2008 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 2009 | |
3019eac3 DE |
2010 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
2011 | ||
57d63ce2 DE |
2012 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
2013 | (struct dwp_file *dwp_file, const char *comp_dir, | |
2014 | ULONGEST signature, int is_debug_types); | |
a2ce51a0 DE |
2015 | |
2016 | static struct dwp_file *get_dwp_file (void); | |
2017 | ||
3019eac3 | 2018 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 2019 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
2020 | |
2021 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 2022 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 2023 | |
89e63ee4 DE |
2024 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
2025 | ||
3019eac3 DE |
2026 | static void free_dwo_file_cleanup (void *); |
2027 | ||
95554aad TT |
2028 | static void process_cu_includes (void); |
2029 | ||
1b80a9fa | 2030 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
2031 | |
2032 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
2033 | \f |
2034 | /* Various complaints about symbol reading that don't abort the process. */ | |
2035 | ||
2036 | static void | |
2037 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2038 | { | |
2039 | complaint (&symfile_complaints, | |
2040 | _("statement list doesn't fit in .debug_line section")); | |
2041 | } | |
2042 | ||
2043 | static void | |
2044 | dwarf2_debug_line_missing_file_complaint (void) | |
2045 | { | |
2046 | complaint (&symfile_complaints, | |
2047 | _(".debug_line section has line data without a file")); | |
2048 | } | |
2049 | ||
2050 | static void | |
2051 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2052 | { | |
2053 | complaint (&symfile_complaints, | |
2054 | _(".debug_line section has line " | |
2055 | "program sequence without an end")); | |
2056 | } | |
2057 | ||
2058 | static void | |
2059 | dwarf2_complex_location_expr_complaint (void) | |
2060 | { | |
2061 | complaint (&symfile_complaints, _("location expression too complex")); | |
2062 | } | |
2063 | ||
2064 | static void | |
2065 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2066 | int arg3) | |
2067 | { | |
2068 | complaint (&symfile_complaints, | |
2069 | _("const value length mismatch for '%s', got %d, expected %d"), | |
2070 | arg1, arg2, arg3); | |
2071 | } | |
2072 | ||
2073 | static void | |
2074 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2075 | { | |
2076 | complaint (&symfile_complaints, | |
2077 | _("debug info runs off end of %s section" | |
2078 | " [in module %s]"), | |
a32a8923 DE |
2079 | get_section_name (section), |
2080 | get_section_file_name (section)); | |
4390d890 | 2081 | } |
1b80a9fa | 2082 | |
4390d890 DE |
2083 | static void |
2084 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2085 | { | |
2086 | complaint (&symfile_complaints, | |
2087 | _("macro debug info contains a " | |
2088 | "malformed macro definition:\n`%s'"), | |
2089 | arg1); | |
2090 | } | |
2091 | ||
2092 | static void | |
2093 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2094 | { | |
2095 | complaint (&symfile_complaints, | |
2096 | _("invalid attribute class or form for '%s' in '%s'"), | |
2097 | arg1, arg2); | |
2098 | } | |
527f3840 JK |
2099 | |
2100 | /* Hash function for line_header_hash. */ | |
2101 | ||
2102 | static hashval_t | |
2103 | line_header_hash (const struct line_header *ofs) | |
2104 | { | |
9c541725 | 2105 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2106 | } |
2107 | ||
2108 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2109 | ||
2110 | static hashval_t | |
2111 | line_header_hash_voidp (const void *item) | |
2112 | { | |
9a3c8263 | 2113 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2114 | |
2115 | return line_header_hash (ofs); | |
2116 | } | |
2117 | ||
2118 | /* Equality function for line_header_hash. */ | |
2119 | ||
2120 | static int | |
2121 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2122 | { | |
9a3c8263 SM |
2123 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2124 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2125 | |
9c541725 | 2126 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2127 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2128 | } | |
2129 | ||
4390d890 | 2130 | \f |
9291a0cd TT |
2131 | #if WORDS_BIGENDIAN |
2132 | ||
2133 | /* Convert VALUE between big- and little-endian. */ | |
2134 | static offset_type | |
2135 | byte_swap (offset_type value) | |
2136 | { | |
2137 | offset_type result; | |
2138 | ||
2139 | result = (value & 0xff) << 24; | |
2140 | result |= (value & 0xff00) << 8; | |
2141 | result |= (value & 0xff0000) >> 8; | |
2142 | result |= (value & 0xff000000) >> 24; | |
2143 | return result; | |
2144 | } | |
2145 | ||
2146 | #define MAYBE_SWAP(V) byte_swap (V) | |
2147 | ||
2148 | #else | |
2149 | #define MAYBE_SWAP(V) (V) | |
2150 | #endif /* WORDS_BIGENDIAN */ | |
2151 | ||
31aa7e4e JB |
2152 | /* Read the given attribute value as an address, taking the attribute's |
2153 | form into account. */ | |
2154 | ||
2155 | static CORE_ADDR | |
2156 | attr_value_as_address (struct attribute *attr) | |
2157 | { | |
2158 | CORE_ADDR addr; | |
2159 | ||
2160 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2161 | { | |
2162 | /* Aside from a few clearly defined exceptions, attributes that | |
2163 | contain an address must always be in DW_FORM_addr form. | |
2164 | Unfortunately, some compilers happen to be violating this | |
2165 | requirement by encoding addresses using other forms, such | |
2166 | as DW_FORM_data4 for example. For those broken compilers, | |
2167 | we try to do our best, without any guarantee of success, | |
2168 | to interpret the address correctly. It would also be nice | |
2169 | to generate a complaint, but that would require us to maintain | |
2170 | a list of legitimate cases where a non-address form is allowed, | |
2171 | as well as update callers to pass in at least the CU's DWARF | |
2172 | version. This is more overhead than what we're willing to | |
2173 | expand for a pretty rare case. */ | |
2174 | addr = DW_UNSND (attr); | |
2175 | } | |
2176 | else | |
2177 | addr = DW_ADDR (attr); | |
2178 | ||
2179 | return addr; | |
2180 | } | |
2181 | ||
9291a0cd TT |
2182 | /* The suffix for an index file. */ |
2183 | #define INDEX_SUFFIX ".gdb-index" | |
2184 | ||
c906108c | 2185 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2186 | information and return true if we have enough to do something. |
2187 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2188 | ELF names are used. */ | |
c906108c SS |
2189 | |
2190 | int | |
251d32d9 TG |
2191 | dwarf2_has_info (struct objfile *objfile, |
2192 | const struct dwarf2_debug_sections *names) | |
c906108c | 2193 | { |
9a3c8263 SM |
2194 | dwarf2_per_objfile = ((struct dwarf2_per_objfile *) |
2195 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
be391dca TT |
2196 | if (!dwarf2_per_objfile) |
2197 | { | |
2198 | /* Initialize per-objfile state. */ | |
2199 | struct dwarf2_per_objfile *data | |
8d749320 | 2200 | = XOBNEW (&objfile->objfile_obstack, struct dwarf2_per_objfile); |
9a619af0 | 2201 | |
be391dca TT |
2202 | memset (data, 0, sizeof (*data)); |
2203 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
2204 | dwarf2_per_objfile = data; | |
6502dd73 | 2205 | |
251d32d9 TG |
2206 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
2207 | (void *) names); | |
be391dca TT |
2208 | dwarf2_per_objfile->objfile = objfile; |
2209 | } | |
73869dc2 | 2210 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2211 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2212 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2213 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2214 | } |
2215 | ||
2216 | /* Return the containing section of virtual section SECTION. */ | |
2217 | ||
2218 | static struct dwarf2_section_info * | |
2219 | get_containing_section (const struct dwarf2_section_info *section) | |
2220 | { | |
2221 | gdb_assert (section->is_virtual); | |
2222 | return section->s.containing_section; | |
c906108c SS |
2223 | } |
2224 | ||
a32a8923 DE |
2225 | /* Return the bfd owner of SECTION. */ |
2226 | ||
2227 | static struct bfd * | |
2228 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2229 | { | |
73869dc2 DE |
2230 | if (section->is_virtual) |
2231 | { | |
2232 | section = get_containing_section (section); | |
2233 | gdb_assert (!section->is_virtual); | |
2234 | } | |
049412e3 | 2235 | return section->s.section->owner; |
a32a8923 DE |
2236 | } |
2237 | ||
2238 | /* Return the bfd section of SECTION. | |
2239 | Returns NULL if the section is not present. */ | |
2240 | ||
2241 | static asection * | |
2242 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2243 | { | |
73869dc2 DE |
2244 | if (section->is_virtual) |
2245 | { | |
2246 | section = get_containing_section (section); | |
2247 | gdb_assert (!section->is_virtual); | |
2248 | } | |
049412e3 | 2249 | return section->s.section; |
a32a8923 DE |
2250 | } |
2251 | ||
2252 | /* Return the name of SECTION. */ | |
2253 | ||
2254 | static const char * | |
2255 | get_section_name (const struct dwarf2_section_info *section) | |
2256 | { | |
2257 | asection *sectp = get_section_bfd_section (section); | |
2258 | ||
2259 | gdb_assert (sectp != NULL); | |
2260 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2261 | } | |
2262 | ||
2263 | /* Return the name of the file SECTION is in. */ | |
2264 | ||
2265 | static const char * | |
2266 | get_section_file_name (const struct dwarf2_section_info *section) | |
2267 | { | |
2268 | bfd *abfd = get_section_bfd_owner (section); | |
2269 | ||
2270 | return bfd_get_filename (abfd); | |
2271 | } | |
2272 | ||
2273 | /* Return the id of SECTION. | |
2274 | Returns 0 if SECTION doesn't exist. */ | |
2275 | ||
2276 | static int | |
2277 | get_section_id (const struct dwarf2_section_info *section) | |
2278 | { | |
2279 | asection *sectp = get_section_bfd_section (section); | |
2280 | ||
2281 | if (sectp == NULL) | |
2282 | return 0; | |
2283 | return sectp->id; | |
2284 | } | |
2285 | ||
2286 | /* Return the flags of SECTION. | |
73869dc2 | 2287 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2288 | |
2289 | static int | |
2290 | get_section_flags (const struct dwarf2_section_info *section) | |
2291 | { | |
2292 | asection *sectp = get_section_bfd_section (section); | |
2293 | ||
2294 | gdb_assert (sectp != NULL); | |
2295 | return bfd_get_section_flags (sectp->owner, sectp); | |
2296 | } | |
2297 | ||
251d32d9 TG |
2298 | /* When loading sections, we look either for uncompressed section or for |
2299 | compressed section names. */ | |
233a11ab CS |
2300 | |
2301 | static int | |
251d32d9 TG |
2302 | section_is_p (const char *section_name, |
2303 | const struct dwarf2_section_names *names) | |
233a11ab | 2304 | { |
251d32d9 TG |
2305 | if (names->normal != NULL |
2306 | && strcmp (section_name, names->normal) == 0) | |
2307 | return 1; | |
2308 | if (names->compressed != NULL | |
2309 | && strcmp (section_name, names->compressed) == 0) | |
2310 | return 1; | |
2311 | return 0; | |
233a11ab CS |
2312 | } |
2313 | ||
c906108c SS |
2314 | /* This function is mapped across the sections and remembers the |
2315 | offset and size of each of the debugging sections we are interested | |
2316 | in. */ | |
2317 | ||
2318 | static void | |
251d32d9 | 2319 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 2320 | { |
251d32d9 | 2321 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 2322 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
2323 | |
2324 | if (vnames == NULL) | |
2325 | names = &dwarf2_elf_names; | |
2326 | else | |
2327 | names = (const struct dwarf2_debug_sections *) vnames; | |
2328 | ||
dc7650b8 JK |
2329 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2330 | { | |
2331 | } | |
2332 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 2333 | { |
049412e3 | 2334 | dwarf2_per_objfile->info.s.section = sectp; |
dce234bc | 2335 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); |
c906108c | 2336 | } |
251d32d9 | 2337 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 2338 | { |
049412e3 | 2339 | dwarf2_per_objfile->abbrev.s.section = sectp; |
dce234bc | 2340 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); |
c906108c | 2341 | } |
251d32d9 | 2342 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 2343 | { |
049412e3 | 2344 | dwarf2_per_objfile->line.s.section = sectp; |
dce234bc | 2345 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); |
c906108c | 2346 | } |
251d32d9 | 2347 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 2348 | { |
049412e3 | 2349 | dwarf2_per_objfile->loc.s.section = sectp; |
dce234bc | 2350 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); |
c906108c | 2351 | } |
43988095 JK |
2352 | else if (section_is_p (sectp->name, &names->loclists)) |
2353 | { | |
2354 | dwarf2_per_objfile->loclists.s.section = sectp; | |
2355 | dwarf2_per_objfile->loclists.size = bfd_get_section_size (sectp); | |
2356 | } | |
251d32d9 | 2357 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 2358 | { |
049412e3 | 2359 | dwarf2_per_objfile->macinfo.s.section = sectp; |
dce234bc | 2360 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); |
c906108c | 2361 | } |
cf2c3c16 TT |
2362 | else if (section_is_p (sectp->name, &names->macro)) |
2363 | { | |
049412e3 | 2364 | dwarf2_per_objfile->macro.s.section = sectp; |
cf2c3c16 TT |
2365 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); |
2366 | } | |
251d32d9 | 2367 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 2368 | { |
049412e3 | 2369 | dwarf2_per_objfile->str.s.section = sectp; |
dce234bc | 2370 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); |
c906108c | 2371 | } |
43988095 JK |
2372 | else if (section_is_p (sectp->name, &names->line_str)) |
2373 | { | |
2374 | dwarf2_per_objfile->line_str.s.section = sectp; | |
2375 | dwarf2_per_objfile->line_str.size = bfd_get_section_size (sectp); | |
2376 | } | |
3019eac3 DE |
2377 | else if (section_is_p (sectp->name, &names->addr)) |
2378 | { | |
049412e3 | 2379 | dwarf2_per_objfile->addr.s.section = sectp; |
3019eac3 DE |
2380 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); |
2381 | } | |
251d32d9 | 2382 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 2383 | { |
049412e3 | 2384 | dwarf2_per_objfile->frame.s.section = sectp; |
dce234bc | 2385 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2386 | } |
251d32d9 | 2387 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 2388 | { |
049412e3 | 2389 | dwarf2_per_objfile->eh_frame.s.section = sectp; |
dc7650b8 | 2390 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2391 | } |
251d32d9 | 2392 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 2393 | { |
049412e3 | 2394 | dwarf2_per_objfile->ranges.s.section = sectp; |
dce234bc | 2395 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); |
af34e669 | 2396 | } |
43988095 JK |
2397 | else if (section_is_p (sectp->name, &names->rnglists)) |
2398 | { | |
2399 | dwarf2_per_objfile->rnglists.s.section = sectp; | |
2400 | dwarf2_per_objfile->rnglists.size = bfd_get_section_size (sectp); | |
2401 | } | |
251d32d9 | 2402 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 2403 | { |
8b70b953 TT |
2404 | struct dwarf2_section_info type_section; |
2405 | ||
2406 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2407 | type_section.s.section = sectp; |
8b70b953 TT |
2408 | type_section.size = bfd_get_section_size (sectp); |
2409 | ||
2410 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
2411 | &type_section); | |
348e048f | 2412 | } |
251d32d9 | 2413 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd | 2414 | { |
049412e3 | 2415 | dwarf2_per_objfile->gdb_index.s.section = sectp; |
9291a0cd TT |
2416 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); |
2417 | } | |
dce234bc | 2418 | |
b4e1fd61 | 2419 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 FR |
2420 | && bfd_section_vma (abfd, sectp) == 0) |
2421 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
2422 | } |
2423 | ||
fceca515 DE |
2424 | /* A helper function that decides whether a section is empty, |
2425 | or not present. */ | |
9e0ac564 TT |
2426 | |
2427 | static int | |
19ac8c2e | 2428 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2429 | { |
73869dc2 DE |
2430 | if (section->is_virtual) |
2431 | return section->size == 0; | |
049412e3 | 2432 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2433 | } |
2434 | ||
3019eac3 DE |
2435 | /* Read the contents of the section INFO. |
2436 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2437 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2438 | of the DWO file. | |
dce234bc | 2439 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2440 | |
dce234bc PP |
2441 | static void |
2442 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2443 | { |
a32a8923 | 2444 | asection *sectp; |
3019eac3 | 2445 | bfd *abfd; |
dce234bc | 2446 | gdb_byte *buf, *retbuf; |
c906108c | 2447 | |
be391dca TT |
2448 | if (info->readin) |
2449 | return; | |
dce234bc | 2450 | info->buffer = NULL; |
be391dca | 2451 | info->readin = 1; |
188dd5d6 | 2452 | |
9e0ac564 | 2453 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2454 | return; |
c906108c | 2455 | |
a32a8923 | 2456 | sectp = get_section_bfd_section (info); |
3019eac3 | 2457 | |
73869dc2 DE |
2458 | /* If this is a virtual section we need to read in the real one first. */ |
2459 | if (info->is_virtual) | |
2460 | { | |
2461 | struct dwarf2_section_info *containing_section = | |
2462 | get_containing_section (info); | |
2463 | ||
2464 | gdb_assert (sectp != NULL); | |
2465 | if ((sectp->flags & SEC_RELOC) != 0) | |
2466 | { | |
2467 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2468 | " supported in section %s [in module %s]"), | |
2469 | get_section_name (info), get_section_file_name (info)); | |
2470 | } | |
2471 | dwarf2_read_section (objfile, containing_section); | |
2472 | /* Other code should have already caught virtual sections that don't | |
2473 | fit. */ | |
2474 | gdb_assert (info->virtual_offset + info->size | |
2475 | <= containing_section->size); | |
2476 | /* If the real section is empty or there was a problem reading the | |
2477 | section we shouldn't get here. */ | |
2478 | gdb_assert (containing_section->buffer != NULL); | |
2479 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2480 | return; | |
2481 | } | |
2482 | ||
4bf44c1c TT |
2483 | /* If the section has relocations, we must read it ourselves. |
2484 | Otherwise we attach it to the BFD. */ | |
2485 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2486 | { |
d521ce57 | 2487 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2488 | return; |
dce234bc | 2489 | } |
dce234bc | 2490 | |
224c3ddb | 2491 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2492 | info->buffer = buf; |
dce234bc PP |
2493 | |
2494 | /* When debugging .o files, we may need to apply relocations; see | |
2495 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2496 | We never compress sections in .o files, so we only need to | |
2497 | try this when the section is not compressed. */ | |
ac8035ab | 2498 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2499 | if (retbuf != NULL) |
2500 | { | |
2501 | info->buffer = retbuf; | |
2502 | return; | |
2503 | } | |
2504 | ||
a32a8923 DE |
2505 | abfd = get_section_bfd_owner (info); |
2506 | gdb_assert (abfd != NULL); | |
2507 | ||
dce234bc PP |
2508 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2509 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2510 | { |
2511 | error (_("Dwarf Error: Can't read DWARF data" | |
2512 | " in section %s [in module %s]"), | |
2513 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2514 | } | |
dce234bc PP |
2515 | } |
2516 | ||
9e0ac564 TT |
2517 | /* A helper function that returns the size of a section in a safe way. |
2518 | If you are positive that the section has been read before using the | |
2519 | size, then it is safe to refer to the dwarf2_section_info object's | |
2520 | "size" field directly. In other cases, you must call this | |
2521 | function, because for compressed sections the size field is not set | |
2522 | correctly until the section has been read. */ | |
2523 | ||
2524 | static bfd_size_type | |
2525 | dwarf2_section_size (struct objfile *objfile, | |
2526 | struct dwarf2_section_info *info) | |
2527 | { | |
2528 | if (!info->readin) | |
2529 | dwarf2_read_section (objfile, info); | |
2530 | return info->size; | |
2531 | } | |
2532 | ||
dce234bc | 2533 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2534 | SECTION_NAME. */ |
af34e669 | 2535 | |
dce234bc | 2536 | void |
3017a003 TG |
2537 | dwarf2_get_section_info (struct objfile *objfile, |
2538 | enum dwarf2_section_enum sect, | |
d521ce57 | 2539 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2540 | bfd_size_type *sizep) |
2541 | { | |
2542 | struct dwarf2_per_objfile *data | |
9a3c8263 SM |
2543 | = (struct dwarf2_per_objfile *) objfile_data (objfile, |
2544 | dwarf2_objfile_data_key); | |
dce234bc | 2545 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2546 | |
2547 | /* We may see an objfile without any DWARF, in which case we just | |
2548 | return nothing. */ | |
2549 | if (data == NULL) | |
2550 | { | |
2551 | *sectp = NULL; | |
2552 | *bufp = NULL; | |
2553 | *sizep = 0; | |
2554 | return; | |
2555 | } | |
3017a003 TG |
2556 | switch (sect) |
2557 | { | |
2558 | case DWARF2_DEBUG_FRAME: | |
2559 | info = &data->frame; | |
2560 | break; | |
2561 | case DWARF2_EH_FRAME: | |
2562 | info = &data->eh_frame; | |
2563 | break; | |
2564 | default: | |
2565 | gdb_assert_not_reached ("unexpected section"); | |
2566 | } | |
dce234bc | 2567 | |
9e0ac564 | 2568 | dwarf2_read_section (objfile, info); |
dce234bc | 2569 | |
a32a8923 | 2570 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2571 | *bufp = info->buffer; |
2572 | *sizep = info->size; | |
2573 | } | |
2574 | ||
36586728 TT |
2575 | /* A helper function to find the sections for a .dwz file. */ |
2576 | ||
2577 | static void | |
2578 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2579 | { | |
9a3c8263 | 2580 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2581 | |
2582 | /* Note that we only support the standard ELF names, because .dwz | |
2583 | is ELF-only (at the time of writing). */ | |
2584 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2585 | { | |
049412e3 | 2586 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2587 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2588 | } | |
2589 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2590 | { | |
049412e3 | 2591 | dwz_file->info.s.section = sectp; |
36586728 TT |
2592 | dwz_file->info.size = bfd_get_section_size (sectp); |
2593 | } | |
2594 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2595 | { | |
049412e3 | 2596 | dwz_file->str.s.section = sectp; |
36586728 TT |
2597 | dwz_file->str.size = bfd_get_section_size (sectp); |
2598 | } | |
2599 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2600 | { | |
049412e3 | 2601 | dwz_file->line.s.section = sectp; |
36586728 TT |
2602 | dwz_file->line.size = bfd_get_section_size (sectp); |
2603 | } | |
2604 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2605 | { | |
049412e3 | 2606 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2607 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2608 | } | |
2ec9a5e0 TT |
2609 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2610 | { | |
049412e3 | 2611 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2612 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2613 | } | |
36586728 TT |
2614 | } |
2615 | ||
4db1a1dc TT |
2616 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2617 | there is no .gnu_debugaltlink section in the file. Error if there | |
2618 | is such a section but the file cannot be found. */ | |
36586728 TT |
2619 | |
2620 | static struct dwz_file * | |
2621 | dwarf2_get_dwz_file (void) | |
2622 | { | |
4db1a1dc | 2623 | char *data; |
36586728 TT |
2624 | struct cleanup *cleanup; |
2625 | const char *filename; | |
2626 | struct dwz_file *result; | |
acd13123 | 2627 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2628 | size_t buildid_len; |
2629 | bfd_byte *buildid; | |
36586728 TT |
2630 | |
2631 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2632 | return dwarf2_per_objfile->dwz_file; | |
2633 | ||
4db1a1dc TT |
2634 | bfd_set_error (bfd_error_no_error); |
2635 | data = bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
acd13123 | 2636 | &buildid_len_arg, &buildid); |
4db1a1dc TT |
2637 | if (data == NULL) |
2638 | { | |
2639 | if (bfd_get_error () == bfd_error_no_error) | |
2640 | return NULL; | |
2641 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2642 | bfd_errmsg (bfd_get_error ())); | |
2643 | } | |
36586728 | 2644 | cleanup = make_cleanup (xfree, data); |
dc294be5 | 2645 | make_cleanup (xfree, buildid); |
36586728 | 2646 | |
acd13123 TT |
2647 | buildid_len = (size_t) buildid_len_arg; |
2648 | ||
f9d83a0b | 2649 | filename = (const char *) data; |
d721ba37 PA |
2650 | |
2651 | std::string abs_storage; | |
36586728 TT |
2652 | if (!IS_ABSOLUTE_PATH (filename)) |
2653 | { | |
4262abfb | 2654 | char *abs = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); |
36586728 TT |
2655 | |
2656 | make_cleanup (xfree, abs); | |
d721ba37 PA |
2657 | abs_storage = ldirname (abs) + SLASH_STRING + filename; |
2658 | filename = abs_storage.c_str (); | |
36586728 TT |
2659 | } |
2660 | ||
dc294be5 TT |
2661 | /* First try the file name given in the section. If that doesn't |
2662 | work, try to use the build-id instead. */ | |
192b62ce | 2663 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2664 | if (dwz_bfd != NULL) |
36586728 | 2665 | { |
192b62ce TT |
2666 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
2667 | dwz_bfd.release (); | |
36586728 TT |
2668 | } |
2669 | ||
dc294be5 TT |
2670 | if (dwz_bfd == NULL) |
2671 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2672 | ||
2673 | if (dwz_bfd == NULL) | |
2674 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2675 | objfile_name (dwarf2_per_objfile->objfile)); | |
2676 | ||
36586728 TT |
2677 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
2678 | struct dwz_file); | |
192b62ce | 2679 | result->dwz_bfd = dwz_bfd.release (); |
36586728 | 2680 | |
192b62ce | 2681 | bfd_map_over_sections (result->dwz_bfd, locate_dwz_sections, result); |
36586728 TT |
2682 | |
2683 | do_cleanups (cleanup); | |
2684 | ||
192b62ce | 2685 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, result->dwz_bfd); |
8d2cc612 | 2686 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2687 | return result; |
2688 | } | |
9291a0cd | 2689 | \f |
7b9f3c50 DE |
2690 | /* DWARF quick_symbols_functions support. */ |
2691 | ||
2692 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2693 | unique line tables, so we maintain a separate table of all .debug_line | |
2694 | derived entries to support the sharing. | |
2695 | All the quick functions need is the list of file names. We discard the | |
2696 | line_header when we're done and don't need to record it here. */ | |
2697 | struct quick_file_names | |
2698 | { | |
094b34ac DE |
2699 | /* The data used to construct the hash key. */ |
2700 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2701 | |
2702 | /* The number of entries in file_names, real_names. */ | |
2703 | unsigned int num_file_names; | |
2704 | ||
2705 | /* The file names from the line table, after being run through | |
2706 | file_full_name. */ | |
2707 | const char **file_names; | |
2708 | ||
2709 | /* The file names from the line table after being run through | |
2710 | gdb_realpath. These are computed lazily. */ | |
2711 | const char **real_names; | |
2712 | }; | |
2713 | ||
2714 | /* When using the index (and thus not using psymtabs), each CU has an | |
2715 | object of this type. This is used to hold information needed by | |
2716 | the various "quick" methods. */ | |
2717 | struct dwarf2_per_cu_quick_data | |
2718 | { | |
2719 | /* The file table. This can be NULL if there was no file table | |
2720 | or it's currently not read in. | |
2721 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2722 | struct quick_file_names *file_names; | |
2723 | ||
2724 | /* The corresponding symbol table. This is NULL if symbols for this | |
2725 | CU have not yet been read. */ | |
43f3e411 | 2726 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2727 | |
2728 | /* A temporary mark bit used when iterating over all CUs in | |
2729 | expand_symtabs_matching. */ | |
2730 | unsigned int mark : 1; | |
2731 | ||
2732 | /* True if we've tried to read the file table and found there isn't one. | |
2733 | There will be no point in trying to read it again next time. */ | |
2734 | unsigned int no_file_data : 1; | |
2735 | }; | |
2736 | ||
094b34ac DE |
2737 | /* Utility hash function for a stmt_list_hash. */ |
2738 | ||
2739 | static hashval_t | |
2740 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2741 | { | |
2742 | hashval_t v = 0; | |
2743 | ||
2744 | if (stmt_list_hash->dwo_unit != NULL) | |
2745 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2746 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2747 | return v; |
2748 | } | |
2749 | ||
2750 | /* Utility equality function for a stmt_list_hash. */ | |
2751 | ||
2752 | static int | |
2753 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2754 | const struct stmt_list_hash *rhs) | |
2755 | { | |
2756 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2757 | return 0; | |
2758 | if (lhs->dwo_unit != NULL | |
2759 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2760 | return 0; | |
2761 | ||
9c541725 | 2762 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2763 | } |
2764 | ||
7b9f3c50 DE |
2765 | /* Hash function for a quick_file_names. */ |
2766 | ||
2767 | static hashval_t | |
2768 | hash_file_name_entry (const void *e) | |
2769 | { | |
9a3c8263 SM |
2770 | const struct quick_file_names *file_data |
2771 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2772 | |
094b34ac | 2773 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2774 | } |
2775 | ||
2776 | /* Equality function for a quick_file_names. */ | |
2777 | ||
2778 | static int | |
2779 | eq_file_name_entry (const void *a, const void *b) | |
2780 | { | |
9a3c8263 SM |
2781 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2782 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2783 | |
094b34ac | 2784 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2785 | } |
2786 | ||
2787 | /* Delete function for a quick_file_names. */ | |
2788 | ||
2789 | static void | |
2790 | delete_file_name_entry (void *e) | |
2791 | { | |
9a3c8263 | 2792 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2793 | int i; |
2794 | ||
2795 | for (i = 0; i < file_data->num_file_names; ++i) | |
2796 | { | |
2797 | xfree ((void*) file_data->file_names[i]); | |
2798 | if (file_data->real_names) | |
2799 | xfree ((void*) file_data->real_names[i]); | |
2800 | } | |
2801 | ||
2802 | /* The space for the struct itself lives on objfile_obstack, | |
2803 | so we don't free it here. */ | |
2804 | } | |
2805 | ||
2806 | /* Create a quick_file_names hash table. */ | |
2807 | ||
2808 | static htab_t | |
2809 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2810 | { | |
2811 | return htab_create_alloc (nr_initial_entries, | |
2812 | hash_file_name_entry, eq_file_name_entry, | |
2813 | delete_file_name_entry, xcalloc, xfree); | |
2814 | } | |
9291a0cd | 2815 | |
918dd910 JK |
2816 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2817 | have to be created afterwards. You should call age_cached_comp_units after | |
2818 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2819 | ||
2820 | static void | |
2821 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2822 | { | |
3019eac3 | 2823 | if (per_cu->is_debug_types) |
e5fe5e75 | 2824 | load_full_type_unit (per_cu); |
918dd910 | 2825 | else |
95554aad | 2826 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2827 | |
cc12ce38 DE |
2828 | if (per_cu->cu == NULL) |
2829 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2830 | |
2831 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2832 | } |
2833 | ||
a0f42c21 | 2834 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2835 | |
9291a0cd | 2836 | static void |
a0f42c21 | 2837 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2838 | { |
2839 | struct cleanup *back_to; | |
2840 | ||
f4dc4d17 DE |
2841 | /* Skip type_unit_groups, reading the type units they contain |
2842 | is handled elsewhere. */ | |
2843 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2844 | return; | |
2845 | ||
9291a0cd TT |
2846 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2847 | ||
95554aad | 2848 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2849 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2850 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2851 | { | |
2852 | queue_comp_unit (per_cu, language_minimal); | |
2853 | load_cu (per_cu); | |
89e63ee4 DE |
2854 | |
2855 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2856 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2857 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2858 | if (!per_cu->is_debug_types | |
cc12ce38 | 2859 | && per_cu->cu != NULL |
89e63ee4 DE |
2860 | && per_cu->cu->dwo_unit != NULL |
2861 | && dwarf2_per_objfile->index_table != NULL | |
2862 | && dwarf2_per_objfile->index_table->version <= 7 | |
2863 | /* DWP files aren't supported yet. */ | |
2864 | && get_dwp_file () == NULL) | |
2865 | queue_and_load_all_dwo_tus (per_cu); | |
95554aad | 2866 | } |
9291a0cd | 2867 | |
a0f42c21 | 2868 | process_queue (); |
9291a0cd TT |
2869 | |
2870 | /* Age the cache, releasing compilation units that have not | |
2871 | been used recently. */ | |
2872 | age_cached_comp_units (); | |
2873 | ||
2874 | do_cleanups (back_to); | |
2875 | } | |
2876 | ||
2877 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2878 | the objfile from which this CU came. Returns the resulting symbol | |
2879 | table. */ | |
2fdf6df6 | 2880 | |
43f3e411 | 2881 | static struct compunit_symtab * |
a0f42c21 | 2882 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2883 | { |
95554aad | 2884 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2885 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
2886 | { |
2887 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
c83dd867 | 2888 | scoped_restore decrementer = increment_reading_symtab (); |
a0f42c21 | 2889 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2890 | process_cu_includes (); |
9291a0cd TT |
2891 | do_cleanups (back_to); |
2892 | } | |
f194fefb | 2893 | |
43f3e411 | 2894 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2895 | } |
2896 | ||
8832e7e3 | 2897 | /* Return the CU/TU given its index. |
f4dc4d17 DE |
2898 | |
2899 | This is intended for loops like: | |
2900 | ||
2901 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2902 | + dwarf2_per_objfile->n_type_units); ++i) | |
2903 | { | |
8832e7e3 | 2904 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
f4dc4d17 DE |
2905 | |
2906 | ...; | |
2907 | } | |
2908 | */ | |
2fdf6df6 | 2909 | |
1fd400ff | 2910 | static struct dwarf2_per_cu_data * |
8832e7e3 | 2911 | dw2_get_cutu (int index) |
1fd400ff TT |
2912 | { |
2913 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2914 | { | |
f4dc4d17 | 2915 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2916 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2917 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2918 | } |
2919 | ||
2920 | return dwarf2_per_objfile->all_comp_units[index]; | |
2921 | } | |
2922 | ||
8832e7e3 DE |
2923 | /* Return the CU given its index. |
2924 | This differs from dw2_get_cutu in that it's for when you know INDEX | |
2925 | refers to a CU. */ | |
f4dc4d17 DE |
2926 | |
2927 | static struct dwarf2_per_cu_data * | |
8832e7e3 | 2928 | dw2_get_cu (int index) |
f4dc4d17 | 2929 | { |
8832e7e3 | 2930 | gdb_assert (index >= 0 && index < dwarf2_per_objfile->n_comp_units); |
f4dc4d17 | 2931 | |
1fd400ff TT |
2932 | return dwarf2_per_objfile->all_comp_units[index]; |
2933 | } | |
2934 | ||
2ec9a5e0 TT |
2935 | /* A helper for create_cus_from_index that handles a given list of |
2936 | CUs. */ | |
2fdf6df6 | 2937 | |
74a0d9f6 | 2938 | static void |
2ec9a5e0 TT |
2939 | create_cus_from_index_list (struct objfile *objfile, |
2940 | const gdb_byte *cu_list, offset_type n_elements, | |
2941 | struct dwarf2_section_info *section, | |
2942 | int is_dwz, | |
2943 | int base_offset) | |
9291a0cd TT |
2944 | { |
2945 | offset_type i; | |
9291a0cd | 2946 | |
2ec9a5e0 | 2947 | for (i = 0; i < n_elements; i += 2) |
9291a0cd | 2948 | { |
74a0d9f6 | 2949 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2950 | |
2951 | sect_offset sect_off | |
2952 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2953 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2954 | cu_list += 2 * 8; |
2955 | ||
9c541725 PA |
2956 | dwarf2_per_cu_data *the_cu |
2957 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2958 | struct dwarf2_per_cu_data); | |
2959 | the_cu->sect_off = sect_off; | |
9291a0cd TT |
2960 | the_cu->length = length; |
2961 | the_cu->objfile = objfile; | |
8a0459fd | 2962 | the_cu->section = section; |
9291a0cd TT |
2963 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2964 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2965 | the_cu->is_dwz = is_dwz; |
2966 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2967 | } |
9291a0cd TT |
2968 | } |
2969 | ||
2ec9a5e0 | 2970 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2971 | the CU objects for this objfile. */ |
2ec9a5e0 | 2972 | |
74a0d9f6 | 2973 | static void |
2ec9a5e0 TT |
2974 | create_cus_from_index (struct objfile *objfile, |
2975 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2976 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2977 | { | |
2978 | struct dwz_file *dwz; | |
2979 | ||
2980 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
8d749320 SM |
2981 | dwarf2_per_objfile->all_comp_units = |
2982 | XOBNEWVEC (&objfile->objfile_obstack, struct dwarf2_per_cu_data *, | |
2983 | dwarf2_per_objfile->n_comp_units); | |
2ec9a5e0 | 2984 | |
74a0d9f6 JK |
2985 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2986 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2987 | |
2988 | if (dwz_elements == 0) | |
74a0d9f6 | 2989 | return; |
2ec9a5e0 TT |
2990 | |
2991 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2992 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2993 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2994 | } |
2995 | ||
1fd400ff | 2996 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2997 | |
74a0d9f6 | 2998 | static void |
673bfd45 | 2999 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 3000 | struct dwarf2_section_info *section, |
673bfd45 DE |
3001 | const gdb_byte *bytes, |
3002 | offset_type elements) | |
1fd400ff TT |
3003 | { |
3004 | offset_type i; | |
673bfd45 | 3005 | htab_t sig_types_hash; |
1fd400ff | 3006 | |
6aa5f3a6 DE |
3007 | dwarf2_per_objfile->n_type_units |
3008 | = dwarf2_per_objfile->n_allocated_type_units | |
3009 | = elements / 3; | |
8d749320 SM |
3010 | dwarf2_per_objfile->all_type_units = |
3011 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
1fd400ff | 3012 | |
673bfd45 | 3013 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
3014 | |
3015 | for (i = 0; i < elements; i += 3) | |
3016 | { | |
52dc124a | 3017 | struct signatured_type *sig_type; |
9c541725 | 3018 | ULONGEST signature; |
1fd400ff | 3019 | void **slot; |
9c541725 | 3020 | cu_offset type_offset_in_tu; |
1fd400ff | 3021 | |
74a0d9f6 | 3022 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3023 | sect_offset sect_off |
3024 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3025 | type_offset_in_tu | |
3026 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3027 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3028 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3029 | bytes += 3 * 8; | |
3030 | ||
52dc124a | 3031 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3032 | struct signatured_type); |
52dc124a | 3033 | sig_type->signature = signature; |
9c541725 | 3034 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3035 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3036 | sig_type->per_cu.section = section; |
9c541725 | 3037 | sig_type->per_cu.sect_off = sect_off; |
52dc124a DE |
3038 | sig_type->per_cu.objfile = objfile; |
3039 | sig_type->per_cu.v.quick | |
1fd400ff TT |
3040 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3041 | struct dwarf2_per_cu_quick_data); | |
3042 | ||
52dc124a DE |
3043 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3044 | *slot = sig_type; | |
1fd400ff | 3045 | |
b4dd5633 | 3046 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
3047 | } |
3048 | ||
673bfd45 | 3049 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3050 | } |
3051 | ||
9291a0cd TT |
3052 | /* Read the address map data from the mapped index, and use it to |
3053 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3054 | |
9291a0cd TT |
3055 | static void |
3056 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
3057 | { | |
3e29f34a | 3058 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd TT |
3059 | const gdb_byte *iter, *end; |
3060 | struct obstack temp_obstack; | |
3061 | struct addrmap *mutable_map; | |
3062 | struct cleanup *cleanup; | |
3063 | CORE_ADDR baseaddr; | |
3064 | ||
3065 | obstack_init (&temp_obstack); | |
3066 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
3067 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
3068 | ||
3069 | iter = index->address_table; | |
3070 | end = iter + index->address_table_size; | |
3071 | ||
3072 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3073 | ||
3074 | while (iter < end) | |
3075 | { | |
3076 | ULONGEST hi, lo, cu_index; | |
3077 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3078 | iter += 8; | |
3079 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3080 | iter += 8; | |
3081 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3082 | iter += 4; | |
f652bce2 | 3083 | |
24a55014 | 3084 | if (lo > hi) |
f652bce2 | 3085 | { |
24a55014 DE |
3086 | complaint (&symfile_complaints, |
3087 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 3088 | hex_string (lo), hex_string (hi)); |
24a55014 | 3089 | continue; |
f652bce2 | 3090 | } |
24a55014 DE |
3091 | |
3092 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
3093 | { |
3094 | complaint (&symfile_complaints, | |
3095 | _(".gdb_index address table has invalid CU number %u"), | |
3096 | (unsigned) cu_index); | |
24a55014 | 3097 | continue; |
f652bce2 | 3098 | } |
24a55014 | 3099 | |
3e29f34a MR |
3100 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
3101 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
3102 | addrmap_set_empty (mutable_map, lo, hi - 1, dw2_get_cutu (cu_index)); | |
9291a0cd TT |
3103 | } |
3104 | ||
3105 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3106 | &objfile->objfile_obstack); | |
3107 | do_cleanups (cleanup); | |
3108 | } | |
3109 | ||
59d7bcaf JK |
3110 | /* The hash function for strings in the mapped index. This is the same as |
3111 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
3112 | implementation. This is necessary because the hash function is tied to the | |
3113 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
3114 | SYMBOL_HASH_NEXT. |
3115 | ||
3116 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 3117 | |
9291a0cd | 3118 | static hashval_t |
559a7a62 | 3119 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
3120 | { |
3121 | const unsigned char *str = (const unsigned char *) p; | |
3122 | hashval_t r = 0; | |
3123 | unsigned char c; | |
3124 | ||
3125 | while ((c = *str++) != 0) | |
559a7a62 JK |
3126 | { |
3127 | if (index_version >= 5) | |
3128 | c = tolower (c); | |
3129 | r = r * 67 + c - 113; | |
3130 | } | |
9291a0cd TT |
3131 | |
3132 | return r; | |
3133 | } | |
3134 | ||
3135 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
3136 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
3137 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 3138 | |
9291a0cd TT |
3139 | static int |
3140 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
3141 | offset_type **vec_out) | |
3142 | { | |
0cf03b49 JK |
3143 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
3144 | offset_type hash; | |
9291a0cd | 3145 | offset_type slot, step; |
559a7a62 | 3146 | int (*cmp) (const char *, const char *); |
9291a0cd | 3147 | |
0cf03b49 | 3148 | if (current_language->la_language == language_cplus |
45280282 IB |
3149 | || current_language->la_language == language_fortran |
3150 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3151 | { |
3152 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3153 | not contain any. */ | |
a8719064 | 3154 | |
72998fb3 | 3155 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3156 | { |
72998fb3 | 3157 | char *without_params = cp_remove_params (name); |
0cf03b49 | 3158 | |
72998fb3 DE |
3159 | if (without_params != NULL) |
3160 | { | |
3161 | make_cleanup (xfree, without_params); | |
3162 | name = without_params; | |
3163 | } | |
0cf03b49 JK |
3164 | } |
3165 | } | |
3166 | ||
559a7a62 | 3167 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3168 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3169 | simulate our NAME being searched is also lowercased. */ |
3170 | hash = mapped_index_string_hash ((index->version == 4 | |
3171 | && case_sensitivity == case_sensitive_off | |
3172 | ? 5 : index->version), | |
3173 | name); | |
3174 | ||
3876f04e DE |
3175 | slot = hash & (index->symbol_table_slots - 1); |
3176 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 3177 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3178 | |
3179 | for (;;) | |
3180 | { | |
3181 | /* Convert a slot number to an offset into the table. */ | |
3182 | offset_type i = 2 * slot; | |
3183 | const char *str; | |
3876f04e | 3184 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
3185 | { |
3186 | do_cleanups (back_to); | |
3187 | return 0; | |
3188 | } | |
9291a0cd | 3189 | |
3876f04e | 3190 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 3191 | if (!cmp (name, str)) |
9291a0cd TT |
3192 | { |
3193 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 3194 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 3195 | do_cleanups (back_to); |
9291a0cd TT |
3196 | return 1; |
3197 | } | |
3198 | ||
3876f04e | 3199 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
3200 | } |
3201 | } | |
3202 | ||
2ec9a5e0 TT |
3203 | /* A helper function that reads the .gdb_index from SECTION and fills |
3204 | in MAP. FILENAME is the name of the file containing the section; | |
3205 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
3206 | ok to use deprecated sections. | |
3207 | ||
3208 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3209 | out parameters that are filled in with information about the CU and | |
3210 | TU lists in the section. | |
3211 | ||
3212 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3213 | |
9291a0cd | 3214 | static int |
2ec9a5e0 TT |
3215 | read_index_from_section (struct objfile *objfile, |
3216 | const char *filename, | |
3217 | int deprecated_ok, | |
3218 | struct dwarf2_section_info *section, | |
3219 | struct mapped_index *map, | |
3220 | const gdb_byte **cu_list, | |
3221 | offset_type *cu_list_elements, | |
3222 | const gdb_byte **types_list, | |
3223 | offset_type *types_list_elements) | |
9291a0cd | 3224 | { |
948f8e3d | 3225 | const gdb_byte *addr; |
2ec9a5e0 | 3226 | offset_type version; |
b3b272e1 | 3227 | offset_type *metadata; |
1fd400ff | 3228 | int i; |
9291a0cd | 3229 | |
2ec9a5e0 | 3230 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3231 | return 0; |
82430852 JK |
3232 | |
3233 | /* Older elfutils strip versions could keep the section in the main | |
3234 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3235 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3236 | return 0; |
3237 | ||
2ec9a5e0 | 3238 | dwarf2_read_section (objfile, section); |
9291a0cd | 3239 | |
2ec9a5e0 | 3240 | addr = section->buffer; |
9291a0cd | 3241 | /* Version check. */ |
1fd400ff | 3242 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3243 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3244 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3245 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3246 | indices. */ |
831adc1f | 3247 | if (version < 4) |
481860b3 GB |
3248 | { |
3249 | static int warning_printed = 0; | |
3250 | if (!warning_printed) | |
3251 | { | |
3252 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3253 | filename); |
481860b3 GB |
3254 | warning_printed = 1; |
3255 | } | |
3256 | return 0; | |
3257 | } | |
3258 | /* Index version 4 uses a different hash function than index version | |
3259 | 5 and later. | |
3260 | ||
3261 | Versions earlier than 6 did not emit psymbols for inlined | |
3262 | functions. Using these files will cause GDB not to be able to | |
3263 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3264 | indices unless the user has done |
3265 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3266 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3267 | { |
3268 | static int warning_printed = 0; | |
3269 | if (!warning_printed) | |
3270 | { | |
e615022a DE |
3271 | warning (_("\ |
3272 | Skipping deprecated .gdb_index section in %s.\n\ | |
3273 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3274 | to use the section anyway."), | |
2ec9a5e0 | 3275 | filename); |
481860b3 GB |
3276 | warning_printed = 1; |
3277 | } | |
3278 | return 0; | |
3279 | } | |
796a7ff8 | 3280 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3281 | of the TU (for symbols coming from TUs), |
3282 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3283 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3284 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3285 | These are just performance bugs, and we can't distinguish gdb-generated | |
3286 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3287 | |
481860b3 | 3288 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3289 | longer backward compatible. */ |
796a7ff8 | 3290 | if (version > 8) |
594e8718 | 3291 | return 0; |
9291a0cd | 3292 | |
559a7a62 | 3293 | map->version = version; |
2ec9a5e0 | 3294 | map->total_size = section->size; |
9291a0cd TT |
3295 | |
3296 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3297 | |
3298 | i = 0; | |
2ec9a5e0 TT |
3299 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3300 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3301 | / 8); | |
1fd400ff TT |
3302 | ++i; |
3303 | ||
2ec9a5e0 TT |
3304 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3305 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3306 | - MAYBE_SWAP (metadata[i])) | |
3307 | / 8); | |
987d643c | 3308 | ++i; |
1fd400ff TT |
3309 | |
3310 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3311 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3312 | - MAYBE_SWAP (metadata[i])); | |
3313 | ++i; | |
3314 | ||
3876f04e DE |
3315 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3316 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3317 | - MAYBE_SWAP (metadata[i])) | |
3318 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3319 | ++i; |
9291a0cd | 3320 | |
f9d83a0b | 3321 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3322 | |
2ec9a5e0 TT |
3323 | return 1; |
3324 | } | |
3325 | ||
3326 | ||
3327 | /* Read the index file. If everything went ok, initialize the "quick" | |
3328 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
3329 | ||
3330 | static int | |
3331 | dwarf2_read_index (struct objfile *objfile) | |
3332 | { | |
3333 | struct mapped_index local_map, *map; | |
3334 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3335 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3336 | struct dwz_file *dwz; |
2ec9a5e0 | 3337 | |
4262abfb | 3338 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3339 | use_deprecated_index_sections, |
3340 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3341 | &cu_list, &cu_list_elements, | |
3342 | &types_list, &types_list_elements)) | |
3343 | return 0; | |
3344 | ||
0fefef59 | 3345 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3346 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3347 | return 0; |
3348 | ||
2ec9a5e0 TT |
3349 | /* If there is a .dwz file, read it so we can get its CU list as |
3350 | well. */ | |
4db1a1dc TT |
3351 | dwz = dwarf2_get_dwz_file (); |
3352 | if (dwz != NULL) | |
2ec9a5e0 | 3353 | { |
2ec9a5e0 TT |
3354 | struct mapped_index dwz_map; |
3355 | const gdb_byte *dwz_types_ignore; | |
3356 | offset_type dwz_types_elements_ignore; | |
3357 | ||
3358 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3359 | 1, | |
3360 | &dwz->gdb_index, &dwz_map, | |
3361 | &dwz_list, &dwz_list_elements, | |
3362 | &dwz_types_ignore, | |
3363 | &dwz_types_elements_ignore)) | |
3364 | { | |
3365 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3366 | bfd_get_filename (dwz->dwz_bfd)); | |
3367 | return 0; | |
3368 | } | |
3369 | } | |
3370 | ||
74a0d9f6 JK |
3371 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3372 | dwz_list_elements); | |
1fd400ff | 3373 | |
8b70b953 TT |
3374 | if (types_list_elements) |
3375 | { | |
3376 | struct dwarf2_section_info *section; | |
3377 | ||
3378 | /* We can only handle a single .debug_types when we have an | |
3379 | index. */ | |
3380 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3381 | return 0; | |
3382 | ||
3383 | section = VEC_index (dwarf2_section_info_def, | |
3384 | dwarf2_per_objfile->types, 0); | |
3385 | ||
74a0d9f6 JK |
3386 | create_signatured_type_table_from_index (objfile, section, types_list, |
3387 | types_list_elements); | |
8b70b953 | 3388 | } |
9291a0cd | 3389 | |
2ec9a5e0 TT |
3390 | create_addrmap_from_index (objfile, &local_map); |
3391 | ||
8d749320 | 3392 | map = XOBNEW (&objfile->objfile_obstack, struct mapped_index); |
2ec9a5e0 | 3393 | *map = local_map; |
9291a0cd TT |
3394 | |
3395 | dwarf2_per_objfile->index_table = map; | |
3396 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3397 | dwarf2_per_objfile->quick_file_names_table = |
3398 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3399 | |
3400 | return 1; | |
3401 | } | |
3402 | ||
3403 | /* A helper for the "quick" functions which sets the global | |
3404 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3405 | |
9291a0cd TT |
3406 | static void |
3407 | dw2_setup (struct objfile *objfile) | |
3408 | { | |
9a3c8263 SM |
3409 | dwarf2_per_objfile = ((struct dwarf2_per_objfile *) |
3410 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
9291a0cd TT |
3411 | gdb_assert (dwarf2_per_objfile); |
3412 | } | |
3413 | ||
dee91e82 | 3414 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3415 | |
dee91e82 DE |
3416 | static void |
3417 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3418 | const gdb_byte *info_ptr, |
dee91e82 DE |
3419 | struct die_info *comp_unit_die, |
3420 | int has_children, | |
3421 | void *data) | |
9291a0cd | 3422 | { |
dee91e82 DE |
3423 | struct dwarf2_cu *cu = reader->cu; |
3424 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3425 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3426 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3427 | struct attribute *attr; |
dee91e82 | 3428 | int i; |
7b9f3c50 DE |
3429 | void **slot; |
3430 | struct quick_file_names *qfn; | |
9291a0cd | 3431 | |
0186c6a7 DE |
3432 | gdb_assert (! this_cu->is_debug_types); |
3433 | ||
07261596 TT |
3434 | /* Our callers never want to match partial units -- instead they |
3435 | will match the enclosing full CU. */ | |
3436 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3437 | { | |
3438 | this_cu->v.quick->no_file_data = 1; | |
3439 | return; | |
3440 | } | |
3441 | ||
0186c6a7 | 3442 | lh_cu = this_cu; |
7b9f3c50 | 3443 | slot = NULL; |
dee91e82 | 3444 | |
fff8551c | 3445 | line_header_up lh; |
9c541725 | 3446 | sect_offset line_offset {}; |
fff8551c | 3447 | |
dee91e82 | 3448 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
9291a0cd TT |
3449 | if (attr) |
3450 | { | |
7b9f3c50 DE |
3451 | struct quick_file_names find_entry; |
3452 | ||
9c541725 | 3453 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3454 | |
3455 | /* We may have already read in this line header (TU line header sharing). | |
3456 | If we have we're done. */ | |
094b34ac | 3457 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3458 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3459 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3460 | &find_entry, INSERT); | |
3461 | if (*slot != NULL) | |
3462 | { | |
9a3c8263 | 3463 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3464 | return; |
7b9f3c50 DE |
3465 | } |
3466 | ||
3019eac3 | 3467 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3468 | } |
3469 | if (lh == NULL) | |
3470 | { | |
094b34ac | 3471 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3472 | return; |
9291a0cd TT |
3473 | } |
3474 | ||
8d749320 | 3475 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3476 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3477 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3478 | gdb_assert (slot != NULL); |
3479 | *slot = qfn; | |
9291a0cd | 3480 | |
d721ba37 | 3481 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3482 | |
fff8551c | 3483 | qfn->num_file_names = lh->file_names.size (); |
8d749320 | 3484 | qfn->file_names = |
fff8551c PA |
3485 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->file_names.size ()); |
3486 | for (i = 0; i < lh->file_names.size (); ++i) | |
3487 | qfn->file_names[i] = file_full_name (i + 1, lh.get (), fnd.comp_dir); | |
7b9f3c50 | 3488 | qfn->real_names = NULL; |
9291a0cd | 3489 | |
094b34ac | 3490 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3491 | } |
3492 | ||
3493 | /* A helper for the "quick" functions which attempts to read the line | |
3494 | table for THIS_CU. */ | |
3495 | ||
3496 | static struct quick_file_names * | |
e4a48d9d | 3497 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3498 | { |
0186c6a7 DE |
3499 | /* This should never be called for TUs. */ |
3500 | gdb_assert (! this_cu->is_debug_types); | |
3501 | /* Nor type unit groups. */ | |
3502 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3503 | |
dee91e82 DE |
3504 | if (this_cu->v.quick->file_names != NULL) |
3505 | return this_cu->v.quick->file_names; | |
3506 | /* If we know there is no line data, no point in looking again. */ | |
3507 | if (this_cu->v.quick->no_file_data) | |
3508 | return NULL; | |
3509 | ||
0186c6a7 | 3510 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3511 | |
3512 | if (this_cu->v.quick->no_file_data) | |
3513 | return NULL; | |
3514 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3515 | } |
3516 | ||
3517 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3518 | real path for a given file name from the line table. */ |
2fdf6df6 | 3519 | |
9291a0cd | 3520 | static const char * |
7b9f3c50 DE |
3521 | dw2_get_real_path (struct objfile *objfile, |
3522 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3523 | { |
7b9f3c50 DE |
3524 | if (qfn->real_names == NULL) |
3525 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3526 | qfn->num_file_names, const char *); |
9291a0cd | 3527 | |
7b9f3c50 DE |
3528 | if (qfn->real_names[index] == NULL) |
3529 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 3530 | |
7b9f3c50 | 3531 | return qfn->real_names[index]; |
9291a0cd TT |
3532 | } |
3533 | ||
3534 | static struct symtab * | |
3535 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3536 | { | |
43f3e411 | 3537 | struct compunit_symtab *cust; |
9291a0cd | 3538 | int index; |
ae2de4f8 | 3539 | |
9291a0cd TT |
3540 | dw2_setup (objfile); |
3541 | index = dwarf2_per_objfile->n_comp_units - 1; | |
43f3e411 DE |
3542 | cust = dw2_instantiate_symtab (dw2_get_cutu (index)); |
3543 | if (cust == NULL) | |
3544 | return NULL; | |
3545 | return compunit_primary_filetab (cust); | |
9291a0cd TT |
3546 | } |
3547 | ||
7b9f3c50 DE |
3548 | /* Traversal function for dw2_forget_cached_source_info. */ |
3549 | ||
3550 | static int | |
3551 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3552 | { |
7b9f3c50 | 3553 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3554 | |
7b9f3c50 | 3555 | if (file_data->real_names) |
9291a0cd | 3556 | { |
7b9f3c50 | 3557 | int i; |
9291a0cd | 3558 | |
7b9f3c50 | 3559 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3560 | { |
7b9f3c50 DE |
3561 | xfree ((void*) file_data->real_names[i]); |
3562 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3563 | } |
3564 | } | |
7b9f3c50 DE |
3565 | |
3566 | return 1; | |
3567 | } | |
3568 | ||
3569 | static void | |
3570 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3571 | { | |
3572 | dw2_setup (objfile); | |
3573 | ||
3574 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3575 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3576 | } |
3577 | ||
f8eba3c6 TT |
3578 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3579 | the symtabs and calls the iterator. */ | |
3580 | ||
3581 | static int | |
3582 | dw2_map_expand_apply (struct objfile *objfile, | |
3583 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3584 | const char *name, const char *real_path, |
14bc53a8 | 3585 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3586 | { |
43f3e411 | 3587 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3588 | |
3589 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3590 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3591 | return 0; |
3592 | ||
3593 | /* This may expand more than one symtab, and we want to iterate over | |
3594 | all of them. */ | |
a0f42c21 | 3595 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3596 | |
14bc53a8 PA |
3597 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3598 | last_made, callback); | |
f8eba3c6 TT |
3599 | } |
3600 | ||
3601 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3602 | ||
14bc53a8 PA |
3603 | static bool |
3604 | dw2_map_symtabs_matching_filename | |
3605 | (struct objfile *objfile, const char *name, const char *real_path, | |
3606 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd TT |
3607 | { |
3608 | int i; | |
c011a4f4 | 3609 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3610 | |
3611 | dw2_setup (objfile); | |
ae2de4f8 | 3612 | |
848e3e78 DE |
3613 | /* The rule is CUs specify all the files, including those used by |
3614 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3615 | |
848e3e78 | 3616 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3617 | { |
3618 | int j; | |
8832e7e3 | 3619 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3620 | struct quick_file_names *file_data; |
9291a0cd | 3621 | |
3d7bb9d9 | 3622 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3623 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3624 | continue; |
3625 | ||
e4a48d9d | 3626 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3627 | if (file_data == NULL) |
9291a0cd TT |
3628 | continue; |
3629 | ||
7b9f3c50 | 3630 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3631 | { |
7b9f3c50 | 3632 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3633 | const char *this_real_name; |
9291a0cd | 3634 | |
af529f8f | 3635 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3636 | { |
f5b95b50 | 3637 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3638 | callback)) |
3639 | return true; | |
288e77a7 | 3640 | continue; |
4aac40c8 | 3641 | } |
9291a0cd | 3642 | |
c011a4f4 DE |
3643 | /* Before we invoke realpath, which can get expensive when many |
3644 | files are involved, do a quick comparison of the basenames. */ | |
3645 | if (! basenames_may_differ | |
3646 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3647 | continue; | |
3648 | ||
da235a7c JK |
3649 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3650 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3651 | { |
da235a7c | 3652 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3653 | callback)) |
3654 | return true; | |
288e77a7 | 3655 | continue; |
da235a7c | 3656 | } |
9291a0cd | 3657 | |
da235a7c JK |
3658 | if (real_path != NULL) |
3659 | { | |
af529f8f JK |
3660 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3661 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3662 | if (this_real_name != NULL |
af529f8f | 3663 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3664 | { |
f5b95b50 | 3665 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3666 | callback)) |
3667 | return true; | |
288e77a7 | 3668 | continue; |
9291a0cd TT |
3669 | } |
3670 | } | |
3671 | } | |
3672 | } | |
3673 | ||
14bc53a8 | 3674 | return false; |
9291a0cd TT |
3675 | } |
3676 | ||
da51c347 DE |
3677 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3678 | ||
3679 | struct dw2_symtab_iterator | |
9291a0cd | 3680 | { |
da51c347 DE |
3681 | /* The internalized form of .gdb_index. */ |
3682 | struct mapped_index *index; | |
3683 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3684 | int want_specific_block; | |
3685 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3686 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3687 | int block_index; | |
3688 | /* The kind of symbol we're looking for. */ | |
3689 | domain_enum domain; | |
3690 | /* The list of CUs from the index entry of the symbol, | |
3691 | or NULL if not found. */ | |
3692 | offset_type *vec; | |
3693 | /* The next element in VEC to look at. */ | |
3694 | int next; | |
3695 | /* The number of elements in VEC, or zero if there is no match. */ | |
3696 | int length; | |
8943b874 DE |
3697 | /* Have we seen a global version of the symbol? |
3698 | If so we can ignore all further global instances. | |
3699 | This is to work around gold/15646, inefficient gold-generated | |
3700 | indices. */ | |
3701 | int global_seen; | |
da51c347 | 3702 | }; |
9291a0cd | 3703 | |
da51c347 DE |
3704 | /* Initialize the index symtab iterator ITER. |
3705 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3706 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3707 | |
9291a0cd | 3708 | static void |
da51c347 DE |
3709 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3710 | struct mapped_index *index, | |
3711 | int want_specific_block, | |
3712 | int block_index, | |
3713 | domain_enum domain, | |
3714 | const char *name) | |
3715 | { | |
3716 | iter->index = index; | |
3717 | iter->want_specific_block = want_specific_block; | |
3718 | iter->block_index = block_index; | |
3719 | iter->domain = domain; | |
3720 | iter->next = 0; | |
8943b874 | 3721 | iter->global_seen = 0; |
da51c347 DE |
3722 | |
3723 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3724 | iter->length = MAYBE_SWAP (*iter->vec); | |
3725 | else | |
3726 | { | |
3727 | iter->vec = NULL; | |
3728 | iter->length = 0; | |
3729 | } | |
3730 | } | |
3731 | ||
3732 | /* Return the next matching CU or NULL if there are no more. */ | |
3733 | ||
3734 | static struct dwarf2_per_cu_data * | |
3735 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3736 | { | |
3737 | for ( ; iter->next < iter->length; ++iter->next) | |
3738 | { | |
3739 | offset_type cu_index_and_attrs = | |
3740 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3741 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 3742 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
3743 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3744 | /* This value is only valid for index versions >= 7. */ | |
3745 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3746 | gdb_index_symbol_kind symbol_kind = | |
3747 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3748 | /* Only check the symbol attributes if they're present. | |
3749 | Indices prior to version 7 don't record them, | |
3750 | and indices >= 7 may elide them for certain symbols | |
3751 | (gold does this). */ | |
3752 | int attrs_valid = | |
3753 | (iter->index->version >= 7 | |
3754 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3755 | ||
3190f0c6 DE |
3756 | /* Don't crash on bad data. */ |
3757 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3758 | + dwarf2_per_objfile->n_type_units)) | |
3759 | { | |
3760 | complaint (&symfile_complaints, | |
3761 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3762 | " [in module %s]"), |
3763 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3764 | continue; |
3765 | } | |
3766 | ||
8832e7e3 | 3767 | per_cu = dw2_get_cutu (cu_index); |
3190f0c6 | 3768 | |
da51c347 | 3769 | /* Skip if already read in. */ |
43f3e411 | 3770 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3771 | continue; |
3772 | ||
8943b874 DE |
3773 | /* Check static vs global. */ |
3774 | if (attrs_valid) | |
3775 | { | |
3776 | if (iter->want_specific_block | |
3777 | && want_static != is_static) | |
3778 | continue; | |
3779 | /* Work around gold/15646. */ | |
3780 | if (!is_static && iter->global_seen) | |
3781 | continue; | |
3782 | if (!is_static) | |
3783 | iter->global_seen = 1; | |
3784 | } | |
da51c347 DE |
3785 | |
3786 | /* Only check the symbol's kind if it has one. */ | |
3787 | if (attrs_valid) | |
3788 | { | |
3789 | switch (iter->domain) | |
3790 | { | |
3791 | case VAR_DOMAIN: | |
3792 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3793 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3794 | /* Some types are also in VAR_DOMAIN. */ | |
3795 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3796 | continue; | |
3797 | break; | |
3798 | case STRUCT_DOMAIN: | |
3799 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3800 | continue; | |
3801 | break; | |
3802 | case LABEL_DOMAIN: | |
3803 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3804 | continue; | |
3805 | break; | |
3806 | default: | |
3807 | break; | |
3808 | } | |
3809 | } | |
3810 | ||
3811 | ++iter->next; | |
3812 | return per_cu; | |
3813 | } | |
3814 | ||
3815 | return NULL; | |
3816 | } | |
3817 | ||
43f3e411 | 3818 | static struct compunit_symtab * |
da51c347 DE |
3819 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
3820 | const char *name, domain_enum domain) | |
9291a0cd | 3821 | { |
43f3e411 | 3822 | struct compunit_symtab *stab_best = NULL; |
156942c7 DE |
3823 | struct mapped_index *index; |
3824 | ||
9291a0cd TT |
3825 | dw2_setup (objfile); |
3826 | ||
156942c7 DE |
3827 | index = dwarf2_per_objfile->index_table; |
3828 | ||
da51c347 | 3829 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3830 | if (index) |
9291a0cd | 3831 | { |
da51c347 DE |
3832 | struct dw2_symtab_iterator iter; |
3833 | struct dwarf2_per_cu_data *per_cu; | |
3834 | ||
3835 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3836 | |
da51c347 | 3837 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3838 | { |
b2e2f908 | 3839 | struct symbol *sym, *with_opaque = NULL; |
43f3e411 DE |
3840 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); |
3841 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
f194fefb | 3842 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3843 | |
b2e2f908 DE |
3844 | sym = block_find_symbol (block, name, domain, |
3845 | block_find_non_opaque_type_preferred, | |
3846 | &with_opaque); | |
3847 | ||
da51c347 DE |
3848 | /* Some caution must be observed with overloaded functions |
3849 | and methods, since the index will not contain any overload | |
3850 | information (but NAME might contain it). */ | |
da51c347 | 3851 | |
b2e2f908 DE |
3852 | if (sym != NULL |
3853 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
3854 | return stab; | |
3855 | if (with_opaque != NULL | |
3856 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
3857 | stab_best = stab; | |
da51c347 DE |
3858 | |
3859 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3860 | } |
3861 | } | |
9291a0cd | 3862 | |
da51c347 | 3863 | return stab_best; |
9291a0cd TT |
3864 | } |
3865 | ||
3866 | static void | |
3867 | dw2_print_stats (struct objfile *objfile) | |
3868 | { | |
e4a48d9d | 3869 | int i, total, count; |
9291a0cd TT |
3870 | |
3871 | dw2_setup (objfile); | |
e4a48d9d | 3872 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3873 | count = 0; |
e4a48d9d | 3874 | for (i = 0; i < total; ++i) |
9291a0cd | 3875 | { |
8832e7e3 | 3876 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3877 | |
43f3e411 | 3878 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3879 | ++count; |
3880 | } | |
e4a48d9d | 3881 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3882 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3883 | } | |
3884 | ||
779bd270 DE |
3885 | /* This dumps minimal information about the index. |
3886 | It is called via "mt print objfiles". | |
3887 | One use is to verify .gdb_index has been loaded by the | |
3888 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3889 | ||
9291a0cd TT |
3890 | static void |
3891 | dw2_dump (struct objfile *objfile) | |
3892 | { | |
779bd270 DE |
3893 | dw2_setup (objfile); |
3894 | gdb_assert (dwarf2_per_objfile->using_index); | |
3895 | printf_filtered (".gdb_index:"); | |
3896 | if (dwarf2_per_objfile->index_table != NULL) | |
3897 | { | |
3898 | printf_filtered (" version %d\n", | |
3899 | dwarf2_per_objfile->index_table->version); | |
3900 | } | |
3901 | else | |
3902 | printf_filtered (" faked for \"readnow\"\n"); | |
3903 | printf_filtered ("\n"); | |
9291a0cd TT |
3904 | } |
3905 | ||
3906 | static void | |
3189cb12 DE |
3907 | dw2_relocate (struct objfile *objfile, |
3908 | const struct section_offsets *new_offsets, | |
3909 | const struct section_offsets *delta) | |
9291a0cd TT |
3910 | { |
3911 | /* There's nothing to relocate here. */ | |
3912 | } | |
3913 | ||
3914 | static void | |
3915 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3916 | const char *func_name) | |
3917 | { | |
da51c347 DE |
3918 | struct mapped_index *index; |
3919 | ||
3920 | dw2_setup (objfile); | |
3921 | ||
3922 | index = dwarf2_per_objfile->index_table; | |
3923 | ||
3924 | /* index is NULL if OBJF_READNOW. */ | |
3925 | if (index) | |
3926 | { | |
3927 | struct dw2_symtab_iterator iter; | |
3928 | struct dwarf2_per_cu_data *per_cu; | |
3929 | ||
3930 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3931 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3932 | func_name); | |
3933 | ||
3934 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3935 | dw2_instantiate_symtab (per_cu); | |
3936 | } | |
9291a0cd TT |
3937 | } |
3938 | ||
3939 | static void | |
3940 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3941 | { | |
3942 | int i; | |
3943 | ||
3944 | dw2_setup (objfile); | |
1fd400ff TT |
3945 | |
3946 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3947 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3948 | { |
8832e7e3 | 3949 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 3950 | |
a0f42c21 | 3951 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3952 | } |
3953 | } | |
3954 | ||
3955 | static void | |
652a8996 JK |
3956 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3957 | const char *fullname) | |
9291a0cd TT |
3958 | { |
3959 | int i; | |
3960 | ||
3961 | dw2_setup (objfile); | |
d4637a04 DE |
3962 | |
3963 | /* We don't need to consider type units here. | |
3964 | This is only called for examining code, e.g. expand_line_sal. | |
3965 | There can be an order of magnitude (or more) more type units | |
3966 | than comp units, and we avoid them if we can. */ | |
3967 | ||
3968 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3969 | { |
3970 | int j; | |
8832e7e3 | 3971 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
7b9f3c50 | 3972 | struct quick_file_names *file_data; |
9291a0cd | 3973 | |
3d7bb9d9 | 3974 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3975 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3976 | continue; |
3977 | ||
e4a48d9d | 3978 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3979 | if (file_data == NULL) |
9291a0cd TT |
3980 | continue; |
3981 | ||
7b9f3c50 | 3982 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3983 | { |
652a8996 JK |
3984 | const char *this_fullname = file_data->file_names[j]; |
3985 | ||
3986 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3987 | { |
a0f42c21 | 3988 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3989 | break; |
3990 | } | |
3991 | } | |
3992 | } | |
3993 | } | |
3994 | ||
9291a0cd | 3995 | static void |
ade7ed9e | 3996 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 3997 | const char * name, domain_enum domain, |
ade7ed9e | 3998 | int global, |
40658b94 PH |
3999 | int (*callback) (struct block *, |
4000 | struct symbol *, void *), | |
2edb89d3 JK |
4001 | void *data, symbol_compare_ftype *match, |
4002 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 4003 | { |
40658b94 | 4004 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4005 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4006 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4007 | } |
4008 | ||
4009 | static void | |
f8eba3c6 TT |
4010 | dw2_expand_symtabs_matching |
4011 | (struct objfile *objfile, | |
14bc53a8 PA |
4012 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4013 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4014 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4015 | enum search_domain kind) | |
9291a0cd TT |
4016 | { |
4017 | int i; | |
4018 | offset_type iter; | |
4b5246aa | 4019 | struct mapped_index *index; |
9291a0cd TT |
4020 | |
4021 | dw2_setup (objfile); | |
ae2de4f8 DE |
4022 | |
4023 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
4024 | if (!dwarf2_per_objfile->index_table) |
4025 | return; | |
4b5246aa | 4026 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 4027 | |
7b08b9eb | 4028 | if (file_matcher != NULL) |
24c79950 | 4029 | { |
fc4007c9 TT |
4030 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4031 | htab_eq_pointer, | |
4032 | NULL, xcalloc, xfree)); | |
4033 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
4034 | htab_eq_pointer, | |
4035 | NULL, xcalloc, xfree)); | |
24c79950 | 4036 | |
848e3e78 DE |
4037 | /* The rule is CUs specify all the files, including those used by |
4038 | any TU, so there's no need to scan TUs here. */ | |
4039 | ||
4040 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
4041 | { |
4042 | int j; | |
8832e7e3 | 4043 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
24c79950 TT |
4044 | struct quick_file_names *file_data; |
4045 | void **slot; | |
7b08b9eb | 4046 | |
61d96d7e DE |
4047 | QUIT; |
4048 | ||
24c79950 | 4049 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 4050 | |
24c79950 | 4051 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4052 | if (per_cu->v.quick->compunit_symtab) |
24c79950 | 4053 | continue; |
7b08b9eb | 4054 | |
e4a48d9d | 4055 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
4056 | if (file_data == NULL) |
4057 | continue; | |
7b08b9eb | 4058 | |
fc4007c9 | 4059 | if (htab_find (visited_not_found.get (), file_data) != NULL) |
24c79950 | 4060 | continue; |
fc4007c9 | 4061 | else if (htab_find (visited_found.get (), file_data) != NULL) |
24c79950 TT |
4062 | { |
4063 | per_cu->v.quick->mark = 1; | |
4064 | continue; | |
4065 | } | |
4066 | ||
4067 | for (j = 0; j < file_data->num_file_names; ++j) | |
4068 | { | |
da235a7c JK |
4069 | const char *this_real_name; |
4070 | ||
14bc53a8 | 4071 | if (file_matcher (file_data->file_names[j], false)) |
24c79950 TT |
4072 | { |
4073 | per_cu->v.quick->mark = 1; | |
4074 | break; | |
4075 | } | |
da235a7c JK |
4076 | |
4077 | /* Before we invoke realpath, which can get expensive when many | |
4078 | files are involved, do a quick comparison of the basenames. */ | |
4079 | if (!basenames_may_differ | |
4080 | && !file_matcher (lbasename (file_data->file_names[j]), | |
14bc53a8 | 4081 | true)) |
da235a7c JK |
4082 | continue; |
4083 | ||
4084 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
14bc53a8 | 4085 | if (file_matcher (this_real_name, false)) |
da235a7c JK |
4086 | { |
4087 | per_cu->v.quick->mark = 1; | |
4088 | break; | |
4089 | } | |
24c79950 TT |
4090 | } |
4091 | ||
4092 | slot = htab_find_slot (per_cu->v.quick->mark | |
fc4007c9 TT |
4093 | ? visited_found.get () |
4094 | : visited_not_found.get (), | |
24c79950 TT |
4095 | file_data, INSERT); |
4096 | *slot = file_data; | |
4097 | } | |
24c79950 | 4098 | } |
9291a0cd | 4099 | |
3876f04e | 4100 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
4101 | { |
4102 | offset_type idx = 2 * iter; | |
4103 | const char *name; | |
4104 | offset_type *vec, vec_len, vec_idx; | |
8943b874 | 4105 | int global_seen = 0; |
9291a0cd | 4106 | |
61d96d7e DE |
4107 | QUIT; |
4108 | ||
3876f04e | 4109 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
4110 | continue; |
4111 | ||
3876f04e | 4112 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 4113 | |
14bc53a8 | 4114 | if (!symbol_matcher (name)) |
9291a0cd TT |
4115 | continue; |
4116 | ||
4117 | /* The name was matched, now expand corresponding CUs that were | |
4118 | marked. */ | |
4b5246aa | 4119 | vec = (offset_type *) (index->constant_pool |
3876f04e | 4120 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
4121 | vec_len = MAYBE_SWAP (vec[0]); |
4122 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4123 | { | |
e254ef6a | 4124 | struct dwarf2_per_cu_data *per_cu; |
156942c7 | 4125 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
8943b874 DE |
4126 | /* This value is only valid for index versions >= 7. */ |
4127 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
156942c7 DE |
4128 | gdb_index_symbol_kind symbol_kind = |
4129 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4130 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 DE |
4131 | /* Only check the symbol attributes if they're present. |
4132 | Indices prior to version 7 don't record them, | |
4133 | and indices >= 7 may elide them for certain symbols | |
4134 | (gold does this). */ | |
4135 | int attrs_valid = | |
4136 | (index->version >= 7 | |
4137 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4138 | ||
8943b874 DE |
4139 | /* Work around gold/15646. */ |
4140 | if (attrs_valid) | |
4141 | { | |
4142 | if (!is_static && global_seen) | |
4143 | continue; | |
4144 | if (!is_static) | |
4145 | global_seen = 1; | |
4146 | } | |
4147 | ||
3190f0c6 DE |
4148 | /* Only check the symbol's kind if it has one. */ |
4149 | if (attrs_valid) | |
156942c7 DE |
4150 | { |
4151 | switch (kind) | |
4152 | { | |
4153 | case VARIABLES_DOMAIN: | |
4154 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4155 | continue; | |
4156 | break; | |
4157 | case FUNCTIONS_DOMAIN: | |
4158 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
4159 | continue; | |
4160 | break; | |
4161 | case TYPES_DOMAIN: | |
4162 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4163 | continue; | |
4164 | break; | |
4165 | default: | |
4166 | break; | |
4167 | } | |
4168 | } | |
4169 | ||
3190f0c6 DE |
4170 | /* Don't crash on bad data. */ |
4171 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
4172 | + dwarf2_per_objfile->n_type_units)) | |
4173 | { | |
4174 | complaint (&symfile_complaints, | |
4175 | _(".gdb_index entry has bad CU index" | |
4262abfb | 4176 | " [in module %s]"), objfile_name (objfile)); |
3190f0c6 DE |
4177 | continue; |
4178 | } | |
4179 | ||
8832e7e3 | 4180 | per_cu = dw2_get_cutu (cu_index); |
7b08b9eb | 4181 | if (file_matcher == NULL || per_cu->v.quick->mark) |
276d885b GB |
4182 | { |
4183 | int symtab_was_null = | |
4184 | (per_cu->v.quick->compunit_symtab == NULL); | |
4185 | ||
4186 | dw2_instantiate_symtab (per_cu); | |
4187 | ||
4188 | if (expansion_notify != NULL | |
4189 | && symtab_was_null | |
4190 | && per_cu->v.quick->compunit_symtab != NULL) | |
4191 | { | |
14bc53a8 | 4192 | expansion_notify (per_cu->v.quick->compunit_symtab); |
276d885b GB |
4193 | } |
4194 | } | |
9291a0cd TT |
4195 | } |
4196 | } | |
4197 | } | |
4198 | ||
43f3e411 | 4199 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific |
9703b513 TT |
4200 | symtab. */ |
4201 | ||
43f3e411 DE |
4202 | static struct compunit_symtab * |
4203 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4204 | CORE_ADDR pc) | |
9703b513 TT |
4205 | { |
4206 | int i; | |
4207 | ||
43f3e411 DE |
4208 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL |
4209 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4210 | return cust; | |
9703b513 | 4211 | |
43f3e411 | 4212 | if (cust->includes == NULL) |
a3ec0bb1 DE |
4213 | return NULL; |
4214 | ||
43f3e411 | 4215 | for (i = 0; cust->includes[i]; ++i) |
9703b513 | 4216 | { |
43f3e411 | 4217 | struct compunit_symtab *s = cust->includes[i]; |
9703b513 | 4218 | |
43f3e411 | 4219 | s = recursively_find_pc_sect_compunit_symtab (s, pc); |
9703b513 TT |
4220 | if (s != NULL) |
4221 | return s; | |
4222 | } | |
4223 | ||
4224 | return NULL; | |
4225 | } | |
4226 | ||
43f3e411 DE |
4227 | static struct compunit_symtab * |
4228 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4229 | struct bound_minimal_symbol msymbol, | |
4230 | CORE_ADDR pc, | |
4231 | struct obj_section *section, | |
4232 | int warn_if_readin) | |
9291a0cd TT |
4233 | { |
4234 | struct dwarf2_per_cu_data *data; | |
43f3e411 | 4235 | struct compunit_symtab *result; |
9291a0cd TT |
4236 | |
4237 | dw2_setup (objfile); | |
4238 | ||
4239 | if (!objfile->psymtabs_addrmap) | |
4240 | return NULL; | |
4241 | ||
9a3c8263 SM |
4242 | data = (struct dwarf2_per_cu_data *) addrmap_find (objfile->psymtabs_addrmap, |
4243 | pc); | |
9291a0cd TT |
4244 | if (!data) |
4245 | return NULL; | |
4246 | ||
43f3e411 | 4247 | if (warn_if_readin && data->v.quick->compunit_symtab) |
abebb8b0 | 4248 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
4249 | paddress (get_objfile_arch (objfile), pc)); |
4250 | ||
43f3e411 DE |
4251 | result |
4252 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
4253 | pc); | |
9703b513 TT |
4254 | gdb_assert (result != NULL); |
4255 | return result; | |
9291a0cd TT |
4256 | } |
4257 | ||
9291a0cd | 4258 | static void |
44b13c5a | 4259 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 4260 | void *data, int need_fullname) |
9291a0cd TT |
4261 | { |
4262 | int i; | |
fc4007c9 TT |
4263 | htab_up visited (htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, |
4264 | NULL, xcalloc, xfree)); | |
9291a0cd TT |
4265 | |
4266 | dw2_setup (objfile); | |
ae2de4f8 | 4267 | |
848e3e78 DE |
4268 | /* The rule is CUs specify all the files, including those used by |
4269 | any TU, so there's no need to scan TUs here. | |
4270 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 4271 | |
848e3e78 | 4272 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 | 4273 | { |
8832e7e3 | 4274 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
24c79950 | 4275 | |
43f3e411 | 4276 | if (per_cu->v.quick->compunit_symtab) |
24c79950 | 4277 | { |
fc4007c9 TT |
4278 | void **slot = htab_find_slot (visited.get (), |
4279 | per_cu->v.quick->file_names, | |
24c79950 TT |
4280 | INSERT); |
4281 | ||
4282 | *slot = per_cu->v.quick->file_names; | |
4283 | } | |
4284 | } | |
4285 | ||
848e3e78 | 4286 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4287 | { |
4288 | int j; | |
8832e7e3 | 4289 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 4290 | struct quick_file_names *file_data; |
24c79950 | 4291 | void **slot; |
9291a0cd | 4292 | |
3d7bb9d9 | 4293 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4294 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4295 | continue; |
4296 | ||
e4a48d9d | 4297 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4298 | if (file_data == NULL) |
9291a0cd TT |
4299 | continue; |
4300 | ||
fc4007c9 | 4301 | slot = htab_find_slot (visited.get (), file_data, INSERT); |
24c79950 TT |
4302 | if (*slot) |
4303 | { | |
4304 | /* Already visited. */ | |
4305 | continue; | |
4306 | } | |
4307 | *slot = file_data; | |
4308 | ||
7b9f3c50 | 4309 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4310 | { |
74e2f255 DE |
4311 | const char *this_real_name; |
4312 | ||
4313 | if (need_fullname) | |
4314 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4315 | else | |
4316 | this_real_name = NULL; | |
7b9f3c50 | 4317 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
4318 | } |
4319 | } | |
4320 | } | |
4321 | ||
4322 | static int | |
4323 | dw2_has_symbols (struct objfile *objfile) | |
4324 | { | |
4325 | return 1; | |
4326 | } | |
4327 | ||
4328 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4329 | { | |
4330 | dw2_has_symbols, | |
4331 | dw2_find_last_source_symtab, | |
4332 | dw2_forget_cached_source_info, | |
f8eba3c6 | 4333 | dw2_map_symtabs_matching_filename, |
9291a0cd | 4334 | dw2_lookup_symbol, |
9291a0cd TT |
4335 | dw2_print_stats, |
4336 | dw2_dump, | |
4337 | dw2_relocate, | |
4338 | dw2_expand_symtabs_for_function, | |
4339 | dw2_expand_all_symtabs, | |
652a8996 | 4340 | dw2_expand_symtabs_with_fullname, |
40658b94 | 4341 | dw2_map_matching_symbols, |
9291a0cd | 4342 | dw2_expand_symtabs_matching, |
43f3e411 | 4343 | dw2_find_pc_sect_compunit_symtab, |
9291a0cd TT |
4344 | dw2_map_symbol_filenames |
4345 | }; | |
4346 | ||
4347 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
4348 | file will use psymtabs, or 1 if using the GNU index. */ | |
4349 | ||
4350 | int | |
4351 | dwarf2_initialize_objfile (struct objfile *objfile) | |
4352 | { | |
4353 | /* If we're about to read full symbols, don't bother with the | |
4354 | indices. In this case we also don't care if some other debug | |
4355 | format is making psymtabs, because they are all about to be | |
4356 | expanded anyway. */ | |
4357 | if ((objfile->flags & OBJF_READNOW)) | |
4358 | { | |
4359 | int i; | |
4360 | ||
4361 | dwarf2_per_objfile->using_index = 1; | |
4362 | create_all_comp_units (objfile); | |
0e50663e | 4363 | create_all_type_units (objfile); |
7b9f3c50 DE |
4364 | dwarf2_per_objfile->quick_file_names_table = |
4365 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 4366 | |
1fd400ff | 4367 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 4368 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4369 | { |
8832e7e3 | 4370 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
9291a0cd | 4371 | |
e254ef6a DE |
4372 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
4373 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
4374 | } |
4375 | ||
4376 | /* Return 1 so that gdb sees the "quick" functions. However, | |
4377 | these functions will be no-ops because we will have expanded | |
4378 | all symtabs. */ | |
4379 | return 1; | |
4380 | } | |
4381 | ||
4382 | if (dwarf2_read_index (objfile)) | |
4383 | return 1; | |
4384 | ||
9291a0cd TT |
4385 | return 0; |
4386 | } | |
4387 | ||
4388 | \f | |
4389 | ||
dce234bc PP |
4390 | /* Build a partial symbol table. */ |
4391 | ||
4392 | void | |
f29dff0a | 4393 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 4394 | { |
c9bf0622 | 4395 | |
f29dff0a | 4396 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
4397 | { |
4398 | init_psymbol_list (objfile, 1024); | |
4399 | } | |
4400 | ||
492d29ea | 4401 | TRY |
c9bf0622 TT |
4402 | { |
4403 | /* This isn't really ideal: all the data we allocate on the | |
4404 | objfile's obstack is still uselessly kept around. However, | |
4405 | freeing it seems unsafe. */ | |
906768f9 | 4406 | psymtab_discarder psymtabs (objfile); |
c9bf0622 | 4407 | dwarf2_build_psymtabs_hard (objfile); |
906768f9 | 4408 | psymtabs.keep (); |
c9bf0622 | 4409 | } |
492d29ea PA |
4410 | CATCH (except, RETURN_MASK_ERROR) |
4411 | { | |
4412 | exception_print (gdb_stderr, except); | |
4413 | } | |
4414 | END_CATCH | |
c906108c | 4415 | } |
c906108c | 4416 | |
1ce1cefd DE |
4417 | /* Return the total length of the CU described by HEADER. */ |
4418 | ||
4419 | static unsigned int | |
4420 | get_cu_length (const struct comp_unit_head *header) | |
4421 | { | |
4422 | return header->initial_length_size + header->length; | |
4423 | } | |
4424 | ||
9c541725 | 4425 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 4426 | |
9c541725 PA |
4427 | static inline bool |
4428 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 4429 | { |
9c541725 PA |
4430 | sect_offset bottom = cu_header->sect_off; |
4431 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 4432 | |
9c541725 | 4433 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
4434 | } |
4435 | ||
3b80fe9b DE |
4436 | /* Find the base address of the compilation unit for range lists and |
4437 | location lists. It will normally be specified by DW_AT_low_pc. | |
4438 | In DWARF-3 draft 4, the base address could be overridden by | |
4439 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
4440 | compilation units with discontinuous ranges. */ | |
4441 | ||
4442 | static void | |
4443 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
4444 | { | |
4445 | struct attribute *attr; | |
4446 | ||
4447 | cu->base_known = 0; | |
4448 | cu->base_address = 0; | |
4449 | ||
4450 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
4451 | if (attr) | |
4452 | { | |
31aa7e4e | 4453 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4454 | cu->base_known = 1; |
4455 | } | |
4456 | else | |
4457 | { | |
4458 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4459 | if (attr) | |
4460 | { | |
31aa7e4e | 4461 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
4462 | cu->base_known = 1; |
4463 | } | |
4464 | } | |
4465 | } | |
4466 | ||
93311388 | 4467 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 4468 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
4469 | NOTE: This leaves members offset, first_die_offset to be filled in |
4470 | by the caller. */ | |
107d2387 | 4471 | |
d521ce57 | 4472 | static const gdb_byte * |
107d2387 | 4473 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
4474 | const gdb_byte *info_ptr, |
4475 | struct dwarf2_section_info *section, | |
4476 | rcuh_kind section_kind) | |
107d2387 AC |
4477 | { |
4478 | int signed_addr; | |
891d2f0b | 4479 | unsigned int bytes_read; |
43988095 JK |
4480 | const char *filename = get_section_file_name (section); |
4481 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
4482 | |
4483 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
4484 | cu_header->initial_length_size = bytes_read; | |
4485 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 4486 | info_ptr += bytes_read; |
107d2387 AC |
4487 | cu_header->version = read_2_bytes (abfd, info_ptr); |
4488 | info_ptr += 2; | |
43988095 JK |
4489 | if (cu_header->version < 5) |
4490 | switch (section_kind) | |
4491 | { | |
4492 | case rcuh_kind::COMPILE: | |
4493 | cu_header->unit_type = DW_UT_compile; | |
4494 | break; | |
4495 | case rcuh_kind::TYPE: | |
4496 | cu_header->unit_type = DW_UT_type; | |
4497 | break; | |
4498 | default: | |
4499 | internal_error (__FILE__, __LINE__, | |
4500 | _("read_comp_unit_head: invalid section_kind")); | |
4501 | } | |
4502 | else | |
4503 | { | |
4504 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
4505 | (read_1_byte (abfd, info_ptr)); | |
4506 | info_ptr += 1; | |
4507 | switch (cu_header->unit_type) | |
4508 | { | |
4509 | case DW_UT_compile: | |
4510 | if (section_kind != rcuh_kind::COMPILE) | |
4511 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
4512 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
4513 | filename); | |
4514 | break; | |
4515 | case DW_UT_type: | |
4516 | section_kind = rcuh_kind::TYPE; | |
4517 | break; | |
4518 | default: | |
4519 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
4520 | "(is %d, should be %d or %d) [in module %s]"), | |
4521 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
4522 | } | |
4523 | ||
4524 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
4525 | info_ptr += 1; | |
4526 | } | |
9c541725 PA |
4527 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
4528 | cu_header, | |
4529 | &bytes_read); | |
613e1657 | 4530 | info_ptr += bytes_read; |
43988095 JK |
4531 | if (cu_header->version < 5) |
4532 | { | |
4533 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
4534 | info_ptr += 1; | |
4535 | } | |
107d2387 AC |
4536 | signed_addr = bfd_get_sign_extend_vma (abfd); |
4537 | if (signed_addr < 0) | |
8e65ff28 | 4538 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4539 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 4540 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 4541 | |
43988095 JK |
4542 | if (section_kind == rcuh_kind::TYPE) |
4543 | { | |
4544 | LONGEST type_offset; | |
4545 | ||
4546 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
4547 | info_ptr += 8; | |
4548 | ||
4549 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
4550 | info_ptr += bytes_read; | |
9c541725 PA |
4551 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
4552 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
4553 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
4554 | "header (is %s) [in module %s]"), plongest (type_offset), | |
4555 | filename); | |
4556 | } | |
4557 | ||
107d2387 AC |
4558 | return info_ptr; |
4559 | } | |
4560 | ||
36586728 TT |
4561 | /* Helper function that returns the proper abbrev section for |
4562 | THIS_CU. */ | |
4563 | ||
4564 | static struct dwarf2_section_info * | |
4565 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
4566 | { | |
4567 | struct dwarf2_section_info *abbrev; | |
4568 | ||
4569 | if (this_cu->is_dwz) | |
4570 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
4571 | else | |
4572 | abbrev = &dwarf2_per_objfile->abbrev; | |
4573 | ||
4574 | return abbrev; | |
4575 | } | |
4576 | ||
9ff913ba DE |
4577 | /* Subroutine of read_and_check_comp_unit_head and |
4578 | read_and_check_type_unit_head to simplify them. | |
4579 | Perform various error checking on the header. */ | |
4580 | ||
4581 | static void | |
4582 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
4583 | struct dwarf2_section_info *section, |
4584 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 4585 | { |
a32a8923 | 4586 | const char *filename = get_section_file_name (section); |
9ff913ba | 4587 | |
43988095 | 4588 | if (header->version < 2 || header->version > 5) |
9ff913ba | 4589 | error (_("Dwarf Error: wrong version in compilation unit header " |
43988095 | 4590 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), header->version, |
9ff913ba DE |
4591 | filename); |
4592 | ||
9c541725 | 4593 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 4594 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9c541725 PA |
4595 | error (_("Dwarf Error: bad offset (0x%x) in compilation unit header " |
4596 | "(offset 0x%x + 6) [in module %s]"), | |
4597 | to_underlying (header->abbrev_sect_off), | |
4598 | to_underlying (header->sect_off), | |
9ff913ba DE |
4599 | filename); |
4600 | ||
9c541725 | 4601 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 4602 | avoid potential 32-bit overflow. */ |
9c541725 | 4603 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 4604 | > section->size) |
9c541725 PA |
4605 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
4606 | "(offset 0x%x + 0) [in module %s]"), | |
4607 | header->length, to_underlying (header->sect_off), | |
9ff913ba DE |
4608 | filename); |
4609 | } | |
4610 | ||
4611 | /* Read in a CU/TU header and perform some basic error checking. | |
4612 | The contents of the header are stored in HEADER. | |
4613 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4614 | |
d521ce57 | 4615 | static const gdb_byte * |
9ff913ba DE |
4616 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4617 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4618 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4619 | const gdb_byte *info_ptr, |
43988095 | 4620 | rcuh_kind section_kind) |
72bf9492 | 4621 | { |
d521ce57 | 4622 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4623 | bfd *abfd = get_section_bfd_owner (section); |
72bf9492 | 4624 | |
9c541725 | 4625 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 4626 | |
43988095 | 4627 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 4628 | |
9c541725 | 4629 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 4630 | |
4bdcc0c1 | 4631 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4632 | |
4633 | return info_ptr; | |
348e048f DE |
4634 | } |
4635 | ||
f4dc4d17 DE |
4636 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4637 | ||
4638 | static sect_offset | |
4639 | read_abbrev_offset (struct dwarf2_section_info *section, | |
9c541725 | 4640 | sect_offset sect_off) |
f4dc4d17 | 4641 | { |
a32a8923 | 4642 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 4643 | const gdb_byte *info_ptr; |
ac298888 | 4644 | unsigned int initial_length_size, offset_size; |
43988095 | 4645 | uint16_t version; |
f4dc4d17 DE |
4646 | |
4647 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 4648 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 4649 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 4650 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
4651 | info_ptr += initial_length_size; |
4652 | ||
4653 | version = read_2_bytes (abfd, info_ptr); | |
4654 | info_ptr += 2; | |
4655 | if (version >= 5) | |
4656 | { | |
4657 | /* Skip unit type and address size. */ | |
4658 | info_ptr += 2; | |
4659 | } | |
4660 | ||
9c541725 | 4661 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
4662 | } |
4663 | ||
aaa75496 JB |
4664 | /* Allocate a new partial symtab for file named NAME and mark this new |
4665 | partial symtab as being an include of PST. */ | |
4666 | ||
4667 | static void | |
d521ce57 | 4668 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
4669 | struct objfile *objfile) |
4670 | { | |
4671 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4672 | ||
fbd9ab74 JK |
4673 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4674 | { | |
4675 | /* It shares objfile->objfile_obstack. */ | |
4676 | subpst->dirname = pst->dirname; | |
4677 | } | |
4678 | ||
aaa75496 JB |
4679 | subpst->textlow = 0; |
4680 | subpst->texthigh = 0; | |
4681 | ||
8d749320 SM |
4682 | subpst->dependencies |
4683 | = XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
aaa75496 JB |
4684 | subpst->dependencies[0] = pst; |
4685 | subpst->number_of_dependencies = 1; | |
4686 | ||
4687 | subpst->globals_offset = 0; | |
4688 | subpst->n_global_syms = 0; | |
4689 | subpst->statics_offset = 0; | |
4690 | subpst->n_static_syms = 0; | |
43f3e411 | 4691 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
4692 | subpst->read_symtab = pst->read_symtab; |
4693 | subpst->readin = 0; | |
4694 | ||
4695 | /* No private part is necessary for include psymtabs. This property | |
4696 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4697 | the regular ones. */ |
58a9656e | 4698 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4699 | } |
4700 | ||
4701 | /* Read the Line Number Program data and extract the list of files | |
4702 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4703 | partial symtab for each of these included files. */ |
aaa75496 JB |
4704 | |
4705 | static void | |
4706 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4707 | struct die_info *die, |
4708 | struct partial_symtab *pst) | |
aaa75496 | 4709 | { |
fff8551c | 4710 | line_header_up lh; |
d85a05f0 | 4711 | struct attribute *attr; |
aaa75496 | 4712 | |
d85a05f0 DJ |
4713 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4714 | if (attr) | |
9c541725 | 4715 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
4716 | if (lh == NULL) |
4717 | return; /* No linetable, so no includes. */ | |
4718 | ||
c6da4cef | 4719 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
fff8551c | 4720 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
4721 | } |
4722 | ||
348e048f | 4723 | static hashval_t |
52dc124a | 4724 | hash_signatured_type (const void *item) |
348e048f | 4725 | { |
9a3c8263 SM |
4726 | const struct signatured_type *sig_type |
4727 | = (const struct signatured_type *) item; | |
9a619af0 | 4728 | |
348e048f | 4729 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4730 | return sig_type->signature; |
348e048f DE |
4731 | } |
4732 | ||
4733 | static int | |
52dc124a | 4734 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 4735 | { |
9a3c8263 SM |
4736 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
4737 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 4738 | |
348e048f DE |
4739 | return lhs->signature == rhs->signature; |
4740 | } | |
4741 | ||
1fd400ff TT |
4742 | /* Allocate a hash table for signatured types. */ |
4743 | ||
4744 | static htab_t | |
673bfd45 | 4745 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4746 | { |
4747 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4748 | hash_signatured_type, |
4749 | eq_signatured_type, | |
1fd400ff TT |
4750 | NULL, |
4751 | &objfile->objfile_obstack, | |
4752 | hashtab_obstack_allocate, | |
4753 | dummy_obstack_deallocate); | |
4754 | } | |
4755 | ||
d467dd73 | 4756 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4757 | |
4758 | static int | |
d467dd73 | 4759 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 4760 | { |
9a3c8263 SM |
4761 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
4762 | struct signatured_type ***datap = (struct signatured_type ***) datum; | |
1fd400ff | 4763 | |
b4dd5633 | 4764 | **datap = sigt; |
1fd400ff TT |
4765 | ++*datap; |
4766 | ||
4767 | return 1; | |
4768 | } | |
4769 | ||
78d4d2c5 | 4770 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
4771 | and fill them into TYPES_HTAB. It will process only type units, |
4772 | therefore DW_UT_type. */ | |
c88ee1f0 | 4773 | |
78d4d2c5 JK |
4774 | static void |
4775 | create_debug_type_hash_table (struct dwo_file *dwo_file, | |
43988095 JK |
4776 | dwarf2_section_info *section, htab_t &types_htab, |
4777 | rcuh_kind section_kind) | |
348e048f | 4778 | { |
3019eac3 | 4779 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 4780 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
4781 | bfd *abfd; |
4782 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 4783 | |
4bdcc0c1 DE |
4784 | abbrev_section = (dwo_file != NULL |
4785 | ? &dwo_file->sections.abbrev | |
4786 | : &dwarf2_per_objfile->abbrev); | |
4787 | ||
b4f54984 | 4788 | if (dwarf_read_debug) |
43988095 JK |
4789 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
4790 | get_section_name (section), | |
a32a8923 | 4791 | get_section_file_name (abbrev_section)); |
09406207 | 4792 | |
78d4d2c5 JK |
4793 | dwarf2_read_section (objfile, section); |
4794 | info_ptr = section->buffer; | |
348e048f | 4795 | |
78d4d2c5 JK |
4796 | if (info_ptr == NULL) |
4797 | return; | |
348e048f | 4798 | |
78d4d2c5 JK |
4799 | /* We can't set abfd until now because the section may be empty or |
4800 | not present, in which case the bfd is unknown. */ | |
4801 | abfd = get_section_bfd_owner (section); | |
348e048f | 4802 | |
78d4d2c5 JK |
4803 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4804 | because we don't need to read any dies: the signature is in the | |
4805 | header. */ | |
3019eac3 | 4806 | |
78d4d2c5 JK |
4807 | end_ptr = info_ptr + section->size; |
4808 | while (info_ptr < end_ptr) | |
4809 | { | |
78d4d2c5 JK |
4810 | struct signatured_type *sig_type; |
4811 | struct dwo_unit *dwo_tu; | |
4812 | void **slot; | |
4813 | const gdb_byte *ptr = info_ptr; | |
4814 | struct comp_unit_head header; | |
4815 | unsigned int length; | |
8b70b953 | 4816 | |
9c541725 | 4817 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 4818 | |
a49dd8dd JK |
4819 | /* Initialize it due to a false compiler warning. */ |
4820 | header.signature = -1; | |
9c541725 | 4821 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 4822 | |
78d4d2c5 JK |
4823 | /* We need to read the type's signature in order to build the hash |
4824 | table, but we don't need anything else just yet. */ | |
348e048f | 4825 | |
43988095 JK |
4826 | ptr = read_and_check_comp_unit_head (&header, section, |
4827 | abbrev_section, ptr, section_kind); | |
348e048f | 4828 | |
78d4d2c5 | 4829 | length = get_cu_length (&header); |
6caca83c | 4830 | |
78d4d2c5 JK |
4831 | /* Skip dummy type units. */ |
4832 | if (ptr >= info_ptr + length | |
43988095 JK |
4833 | || peek_abbrev_code (abfd, ptr) == 0 |
4834 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
4835 | { |
4836 | info_ptr += length; | |
4837 | continue; | |
4838 | } | |
dee91e82 | 4839 | |
78d4d2c5 JK |
4840 | if (types_htab == NULL) |
4841 | { | |
4842 | if (dwo_file) | |
4843 | types_htab = allocate_dwo_unit_table (objfile); | |
4844 | else | |
4845 | types_htab = allocate_signatured_type_table (objfile); | |
4846 | } | |
8b70b953 | 4847 | |
78d4d2c5 JK |
4848 | if (dwo_file) |
4849 | { | |
4850 | sig_type = NULL; | |
4851 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4852 | struct dwo_unit); | |
4853 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 4854 | dwo_tu->signature = header.signature; |
9c541725 | 4855 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 4856 | dwo_tu->section = section; |
9c541725 | 4857 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
4858 | dwo_tu->length = length; |
4859 | } | |
4860 | else | |
4861 | { | |
4862 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4863 | The real type_offset is in the DWO file. */ | |
4864 | dwo_tu = NULL; | |
4865 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4866 | struct signatured_type); | |
43988095 | 4867 | sig_type->signature = header.signature; |
9c541725 | 4868 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
4869 | sig_type->per_cu.objfile = objfile; |
4870 | sig_type->per_cu.is_debug_types = 1; | |
4871 | sig_type->per_cu.section = section; | |
9c541725 | 4872 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
4873 | sig_type->per_cu.length = length; |
4874 | } | |
4875 | ||
4876 | slot = htab_find_slot (types_htab, | |
4877 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4878 | INSERT); | |
4879 | gdb_assert (slot != NULL); | |
4880 | if (*slot != NULL) | |
4881 | { | |
9c541725 | 4882 | sect_offset dup_sect_off; |
0349ea22 | 4883 | |
3019eac3 DE |
4884 | if (dwo_file) |
4885 | { | |
78d4d2c5 JK |
4886 | const struct dwo_unit *dup_tu |
4887 | = (const struct dwo_unit *) *slot; | |
4888 | ||
9c541725 | 4889 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
4890 | } |
4891 | else | |
4892 | { | |
78d4d2c5 JK |
4893 | const struct signatured_type *dup_tu |
4894 | = (const struct signatured_type *) *slot; | |
4895 | ||
9c541725 | 4896 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 4897 | } |
8b70b953 | 4898 | |
78d4d2c5 JK |
4899 | complaint (&symfile_complaints, |
4900 | _("debug type entry at offset 0x%x is duplicate to" | |
4901 | " the entry at offset 0x%x, signature %s"), | |
9c541725 | 4902 | to_underlying (sect_off), to_underlying (dup_sect_off), |
43988095 | 4903 | hex_string (header.signature)); |
78d4d2c5 JK |
4904 | } |
4905 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 4906 | |
78d4d2c5 JK |
4907 | if (dwarf_read_debug > 1) |
4908 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", | |
9c541725 | 4909 | to_underlying (sect_off), |
43988095 | 4910 | hex_string (header.signature)); |
3019eac3 | 4911 | |
78d4d2c5 JK |
4912 | info_ptr += length; |
4913 | } | |
4914 | } | |
3019eac3 | 4915 | |
78d4d2c5 JK |
4916 | /* Create the hash table of all entries in the .debug_types |
4917 | (or .debug_types.dwo) section(s). | |
4918 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4919 | otherwise it is NULL. | |
b3c8eb43 | 4920 | |
78d4d2c5 | 4921 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 4922 | |
78d4d2c5 | 4923 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 4924 | |
78d4d2c5 JK |
4925 | static void |
4926 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4927 | VEC (dwarf2_section_info_def) *types, | |
4928 | htab_t &types_htab) | |
4929 | { | |
4930 | int ix; | |
4931 | struct dwarf2_section_info *section; | |
4932 | ||
4933 | if (VEC_empty (dwarf2_section_info_def, types)) | |
4934 | return; | |
348e048f | 4935 | |
78d4d2c5 JK |
4936 | for (ix = 0; |
4937 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
4938 | ++ix) | |
43988095 JK |
4939 | create_debug_type_hash_table (dwo_file, section, types_htab, |
4940 | rcuh_kind::TYPE); | |
3019eac3 DE |
4941 | } |
4942 | ||
4943 | /* Create the hash table of all entries in the .debug_types section, | |
4944 | and initialize all_type_units. | |
4945 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4946 | otherwise non-zero. */ | |
4947 | ||
4948 | static int | |
4949 | create_all_type_units (struct objfile *objfile) | |
4950 | { | |
78d4d2c5 | 4951 | htab_t types_htab = NULL; |
b4dd5633 | 4952 | struct signatured_type **iter; |
3019eac3 | 4953 | |
43988095 JK |
4954 | create_debug_type_hash_table (NULL, &dwarf2_per_objfile->info, types_htab, |
4955 | rcuh_kind::COMPILE); | |
78d4d2c5 | 4956 | create_debug_types_hash_table (NULL, dwarf2_per_objfile->types, types_htab); |
3019eac3 DE |
4957 | if (types_htab == NULL) |
4958 | { | |
4959 | dwarf2_per_objfile->signatured_types = NULL; | |
4960 | return 0; | |
4961 | } | |
4962 | ||
348e048f DE |
4963 | dwarf2_per_objfile->signatured_types = types_htab; |
4964 | ||
6aa5f3a6 DE |
4965 | dwarf2_per_objfile->n_type_units |
4966 | = dwarf2_per_objfile->n_allocated_type_units | |
4967 | = htab_elements (types_htab); | |
8d749320 SM |
4968 | dwarf2_per_objfile->all_type_units = |
4969 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
d467dd73 DE |
4970 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4971 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4972 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4973 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4974 | |
348e048f DE |
4975 | return 1; |
4976 | } | |
4977 | ||
6aa5f3a6 DE |
4978 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
4979 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
4980 | Otherwise we find one. */ | |
4981 | ||
4982 | static struct signatured_type * | |
4983 | add_type_unit (ULONGEST sig, void **slot) | |
4984 | { | |
4985 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4986 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
4987 | struct signatured_type *sig_type; | |
4988 | ||
4989 | gdb_assert (n_type_units <= dwarf2_per_objfile->n_allocated_type_units); | |
4990 | ++n_type_units; | |
4991 | if (n_type_units > dwarf2_per_objfile->n_allocated_type_units) | |
4992 | { | |
4993 | if (dwarf2_per_objfile->n_allocated_type_units == 0) | |
4994 | dwarf2_per_objfile->n_allocated_type_units = 1; | |
4995 | dwarf2_per_objfile->n_allocated_type_units *= 2; | |
4996 | dwarf2_per_objfile->all_type_units | |
224c3ddb SM |
4997 | = XRESIZEVEC (struct signatured_type *, |
4998 | dwarf2_per_objfile->all_type_units, | |
4999 | dwarf2_per_objfile->n_allocated_type_units); | |
6aa5f3a6 DE |
5000 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; |
5001 | } | |
5002 | dwarf2_per_objfile->n_type_units = n_type_units; | |
5003 | ||
5004 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5005 | struct signatured_type); | |
5006 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
5007 | sig_type->signature = sig; | |
5008 | sig_type->per_cu.is_debug_types = 1; | |
5009 | if (dwarf2_per_objfile->using_index) | |
5010 | { | |
5011 | sig_type->per_cu.v.quick = | |
5012 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5013 | struct dwarf2_per_cu_quick_data); | |
5014 | } | |
5015 | ||
5016 | if (slot == NULL) | |
5017 | { | |
5018 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
5019 | sig_type, INSERT); | |
5020 | } | |
5021 | gdb_assert (*slot == NULL); | |
5022 | *slot = sig_type; | |
5023 | /* The rest of sig_type must be filled in by the caller. */ | |
5024 | return sig_type; | |
5025 | } | |
5026 | ||
a2ce51a0 DE |
5027 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
5028 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
5029 | ||
5030 | static void | |
5031 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
5032 | struct signatured_type *sig_entry, | |
5033 | struct dwo_unit *dwo_entry) | |
5034 | { | |
7ee85ab1 | 5035 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
5036 | gdb_assert (! sig_entry->per_cu.queued); |
5037 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
5038 | if (dwarf2_per_objfile->using_index) |
5039 | { | |
5040 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 5041 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
5042 | } |
5043 | else | |
5044 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 5045 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 5046 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 5047 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
5048 | gdb_assert (sig_entry->dwo_unit == NULL); |
5049 | ||
5050 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 5051 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
5052 | sig_entry->per_cu.length = dwo_entry->length; |
5053 | sig_entry->per_cu.reading_dwo_directly = 1; | |
5054 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
5055 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
5056 | sig_entry->dwo_unit = dwo_entry; | |
5057 | } | |
5058 | ||
5059 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
5060 | If we haven't read the TU yet, create the signatured_type data structure |
5061 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
5062 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
5063 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
5064 | containing that CU. Otherwise we could end up reading several other DWO | |
5065 | files (due to comdat folding) to process the transitive closure of all the | |
5066 | mentioned TUs, and that can be slow. The current DWO file will have every | |
5067 | type signature that it needs. | |
a2ce51a0 DE |
5068 | We only do this for .gdb_index because in the psymtab case we already have |
5069 | to read all the DWOs to build the type unit groups. */ | |
5070 | ||
5071 | static struct signatured_type * | |
5072 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
5073 | { | |
5074 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5075 | struct dwo_file *dwo_file; | |
5076 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
5077 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 5078 | void **slot; |
a2ce51a0 DE |
5079 | |
5080 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
5081 | ||
6aa5f3a6 DE |
5082 | /* If TU skeletons have been removed then we may not have read in any |
5083 | TUs yet. */ | |
5084 | if (dwarf2_per_objfile->signatured_types == NULL) | |
5085 | { | |
5086 | dwarf2_per_objfile->signatured_types | |
5087 | = allocate_signatured_type_table (objfile); | |
5088 | } | |
a2ce51a0 DE |
5089 | |
5090 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
5091 | Use the global signatured_types array to do our own comdat-folding |
5092 | of types. If this is the first time we're reading this TU, and | |
5093 | the TU has an entry in .gdb_index, replace the recorded data from | |
5094 | .gdb_index with this TU. */ | |
a2ce51a0 | 5095 | |
a2ce51a0 | 5096 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
5097 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
5098 | &find_sig_entry, INSERT); | |
9a3c8263 | 5099 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
5100 | |
5101 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
5102 | read. Don't reassign the global entry to point to this DWO if that's |
5103 | the case. Also note that if the TU is already being read, it may not | |
5104 | have come from a DWO, the program may be a mix of Fission-compiled | |
5105 | code and non-Fission-compiled code. */ | |
5106 | ||
5107 | /* Have we already tried to read this TU? | |
5108 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
5109 | needn't exist in the global table yet). */ | |
5110 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
5111 | return sig_entry; |
5112 | ||
6aa5f3a6 DE |
5113 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
5114 | dwo_unit of the TU itself. */ | |
5115 | dwo_file = cu->dwo_unit->dwo_file; | |
5116 | ||
a2ce51a0 DE |
5117 | /* Ok, this is the first time we're reading this TU. */ |
5118 | if (dwo_file->tus == NULL) | |
5119 | return NULL; | |
5120 | find_dwo_entry.signature = sig; | |
9a3c8263 | 5121 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
5122 | if (dwo_entry == NULL) |
5123 | return NULL; | |
5124 | ||
6aa5f3a6 DE |
5125 | /* If the global table doesn't have an entry for this TU, add one. */ |
5126 | if (sig_entry == NULL) | |
5127 | sig_entry = add_type_unit (sig, slot); | |
5128 | ||
a2ce51a0 | 5129 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
89e63ee4 | 5130 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
5131 | return sig_entry; |
5132 | } | |
5133 | ||
a2ce51a0 DE |
5134 | /* Subroutine of lookup_signatured_type. |
5135 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
5136 | then try the DWP file. If the TU stub (skeleton) has been removed then |
5137 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
5138 | |
5139 | static struct signatured_type * | |
5140 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
5141 | { | |
5142 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5143 | struct dwp_file *dwp_file = get_dwp_file (); | |
5144 | struct dwo_unit *dwo_entry; | |
5145 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 5146 | void **slot; |
a2ce51a0 DE |
5147 | |
5148 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
5149 | gdb_assert (dwp_file != NULL); | |
5150 | ||
6aa5f3a6 DE |
5151 | /* If TU skeletons have been removed then we may not have read in any |
5152 | TUs yet. */ | |
5153 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 5154 | { |
6aa5f3a6 DE |
5155 | dwarf2_per_objfile->signatured_types |
5156 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
5157 | } |
5158 | ||
6aa5f3a6 DE |
5159 | find_sig_entry.signature = sig; |
5160 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
5161 | &find_sig_entry, INSERT); | |
9a3c8263 | 5162 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
5163 | |
5164 | /* Have we already tried to read this TU? | |
5165 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
5166 | needn't exist in the global table yet). */ | |
5167 | if (sig_entry != NULL) | |
5168 | return sig_entry; | |
5169 | ||
a2ce51a0 DE |
5170 | if (dwp_file->tus == NULL) |
5171 | return NULL; | |
57d63ce2 DE |
5172 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
5173 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
5174 | if (dwo_entry == NULL) |
5175 | return NULL; | |
5176 | ||
6aa5f3a6 | 5177 | sig_entry = add_type_unit (sig, slot); |
a2ce51a0 DE |
5178 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); |
5179 | ||
a2ce51a0 DE |
5180 | return sig_entry; |
5181 | } | |
5182 | ||
380bca97 | 5183 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
5184 | Returns NULL if signature SIG is not present in the table. |
5185 | It is up to the caller to complain about this. */ | |
348e048f DE |
5186 | |
5187 | static struct signatured_type * | |
a2ce51a0 | 5188 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 5189 | { |
a2ce51a0 DE |
5190 | if (cu->dwo_unit |
5191 | && dwarf2_per_objfile->using_index) | |
5192 | { | |
5193 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
5194 | These cases require special processing. */ | |
5195 | if (get_dwp_file () == NULL) | |
5196 | return lookup_dwo_signatured_type (cu, sig); | |
5197 | else | |
5198 | return lookup_dwp_signatured_type (cu, sig); | |
5199 | } | |
5200 | else | |
5201 | { | |
5202 | struct signatured_type find_entry, *entry; | |
348e048f | 5203 | |
a2ce51a0 DE |
5204 | if (dwarf2_per_objfile->signatured_types == NULL) |
5205 | return NULL; | |
5206 | find_entry.signature = sig; | |
9a3c8263 SM |
5207 | entry = ((struct signatured_type *) |
5208 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
5209 | return entry; |
5210 | } | |
348e048f | 5211 | } |
42e7ad6c DE |
5212 | \f |
5213 | /* Low level DIE reading support. */ | |
348e048f | 5214 | |
d85a05f0 DJ |
5215 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
5216 | ||
5217 | static void | |
5218 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 5219 | struct dwarf2_cu *cu, |
3019eac3 DE |
5220 | struct dwarf2_section_info *section, |
5221 | struct dwo_file *dwo_file) | |
d85a05f0 | 5222 | { |
fceca515 | 5223 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 5224 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 5225 | reader->cu = cu; |
3019eac3 | 5226 | reader->dwo_file = dwo_file; |
dee91e82 DE |
5227 | reader->die_section = section; |
5228 | reader->buffer = section->buffer; | |
f664829e | 5229 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 5230 | reader->comp_dir = NULL; |
d85a05f0 DJ |
5231 | } |
5232 | ||
b0c7bfa9 DE |
5233 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
5234 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
5235 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
5236 | already. | |
5237 | ||
5238 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
5239 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
5240 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
5241 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
5242 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
5243 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
5244 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
5245 | are filled in with the info of the DIE from the DWO file. | |
5246 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
5247 | provided an abbrev table to use. | |
5248 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
5249 | ||
5250 | static int | |
5251 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
5252 | struct dwo_unit *dwo_unit, | |
5253 | int abbrev_table_provided, | |
5254 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 5255 | const char *stub_comp_dir, |
b0c7bfa9 | 5256 | struct die_reader_specs *result_reader, |
d521ce57 | 5257 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
5258 | struct die_info **result_comp_unit_die, |
5259 | int *result_has_children) | |
5260 | { | |
5261 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5262 | struct dwarf2_cu *cu = this_cu->cu; | |
5263 | struct dwarf2_section_info *section; | |
5264 | bfd *abfd; | |
d521ce57 | 5265 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
5266 | ULONGEST signature; /* Or dwo_id. */ |
5267 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
5268 | int i,num_extra_attrs; | |
5269 | struct dwarf2_section_info *dwo_abbrev_section; | |
5270 | struct attribute *attr; | |
5271 | struct die_info *comp_unit_die; | |
5272 | ||
b0aeadb3 DE |
5273 | /* At most one of these may be provided. */ |
5274 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 5275 | |
b0c7bfa9 DE |
5276 | /* These attributes aren't processed until later: |
5277 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
5278 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
5279 | referenced later. However, these attributes are found in the stub | |
5280 | which we won't have later. In order to not impose this complication | |
5281 | on the rest of the code, we read them here and copy them to the | |
5282 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
5283 | |
5284 | stmt_list = NULL; | |
5285 | low_pc = NULL; | |
5286 | high_pc = NULL; | |
5287 | ranges = NULL; | |
5288 | comp_dir = NULL; | |
5289 | ||
5290 | if (stub_comp_unit_die != NULL) | |
5291 | { | |
5292 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
5293 | DWO file. */ | |
5294 | if (! this_cu->is_debug_types) | |
5295 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
5296 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
5297 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
5298 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
5299 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
5300 | ||
5301 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
5302 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
5303 | cu->addr_base = 0; | |
5304 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
5305 | if (attr) | |
5306 | cu->addr_base = DW_UNSND (attr); | |
5307 | ||
5308 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
5309 | We need the value before we can process DW_AT_ranges. */ | |
5310 | cu->ranges_base = 0; | |
5311 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
5312 | if (attr) | |
5313 | cu->ranges_base = DW_UNSND (attr); | |
5314 | } | |
a2ce51a0 DE |
5315 | else if (stub_comp_dir != NULL) |
5316 | { | |
5317 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 5318 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
5319 | comp_dir->name = DW_AT_comp_dir; |
5320 | comp_dir->form = DW_FORM_string; | |
5321 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
5322 | DW_STRING (comp_dir) = stub_comp_dir; | |
5323 | } | |
b0c7bfa9 DE |
5324 | |
5325 | /* Set up for reading the DWO CU/TU. */ | |
5326 | cu->dwo_unit = dwo_unit; | |
5327 | section = dwo_unit->section; | |
5328 | dwarf2_read_section (objfile, section); | |
a32a8923 | 5329 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
5330 | begin_info_ptr = info_ptr = (section->buffer |
5331 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 DE |
5332 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
5333 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
5334 | ||
5335 | if (this_cu->is_debug_types) | |
5336 | { | |
b0c7bfa9 DE |
5337 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
5338 | ||
43988095 | 5339 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
b0c7bfa9 | 5340 | dwo_abbrev_section, |
43988095 | 5341 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 5342 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 5343 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
5344 | { |
5345 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
5346 | " TU at offset 0x%x [in module %s]"), | |
5347 | hex_string (sig_type->signature), | |
43988095 | 5348 | hex_string (cu->header.signature), |
9c541725 | 5349 | to_underlying (dwo_unit->sect_off), |
a2ce51a0 DE |
5350 | bfd_get_filename (abfd)); |
5351 | } | |
9c541725 | 5352 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
5353 | /* For DWOs coming from DWP files, we don't know the CU length |
5354 | nor the type's offset in the TU until now. */ | |
5355 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 5356 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
5357 | |
5358 | /* Establish the type offset that can be used to lookup the type. | |
5359 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
5360 | sig_type->type_offset_in_section |
5361 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
5362 | } |
5363 | else | |
5364 | { | |
5365 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
5366 | dwo_abbrev_section, | |
43988095 | 5367 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 5368 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
5369 | /* For DWOs coming from DWP files, we don't know the CU length |
5370 | until now. */ | |
5371 | dwo_unit->length = get_cu_length (&cu->header); | |
5372 | } | |
5373 | ||
02142a6c DE |
5374 | /* Replace the CU's original abbrev table with the DWO's. |
5375 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
5376 | if (abbrev_table_provided) |
5377 | { | |
5378 | /* Don't free the provided abbrev table, the caller of | |
5379 | init_cutu_and_read_dies owns it. */ | |
5380 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5381 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
5382 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5383 | } | |
5384 | else | |
5385 | { | |
5386 | dwarf2_free_abbrev_table (cu); | |
5387 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5388 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
5389 | } |
5390 | ||
5391 | /* Read in the die, but leave space to copy over the attributes | |
5392 | from the stub. This has the benefit of simplifying the rest of | |
5393 | the code - all the work to maintain the illusion of a single | |
5394 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
5395 | num_extra_attrs = ((stmt_list != NULL) | |
5396 | + (low_pc != NULL) | |
5397 | + (high_pc != NULL) | |
5398 | + (ranges != NULL) | |
5399 | + (comp_dir != NULL)); | |
5400 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
5401 | result_has_children, num_extra_attrs); | |
5402 | ||
5403 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
5404 | comp_unit_die = *result_comp_unit_die; | |
5405 | i = comp_unit_die->num_attrs; | |
5406 | if (stmt_list != NULL) | |
5407 | comp_unit_die->attrs[i++] = *stmt_list; | |
5408 | if (low_pc != NULL) | |
5409 | comp_unit_die->attrs[i++] = *low_pc; | |
5410 | if (high_pc != NULL) | |
5411 | comp_unit_die->attrs[i++] = *high_pc; | |
5412 | if (ranges != NULL) | |
5413 | comp_unit_die->attrs[i++] = *ranges; | |
5414 | if (comp_dir != NULL) | |
5415 | comp_unit_die->attrs[i++] = *comp_dir; | |
5416 | comp_unit_die->num_attrs += num_extra_attrs; | |
5417 | ||
b4f54984 | 5418 | if (dwarf_die_debug) |
bf6af496 DE |
5419 | { |
5420 | fprintf_unfiltered (gdb_stdlog, | |
5421 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 5422 | get_section_name (section), |
bf6af496 DE |
5423 | (unsigned) (begin_info_ptr - section->buffer), |
5424 | bfd_get_filename (abfd)); | |
b4f54984 | 5425 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
5426 | } |
5427 | ||
a2ce51a0 DE |
5428 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
5429 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
5430 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
5431 | to get it via circuitous means. Blech. */ | |
5432 | if (comp_dir != NULL) | |
5433 | result_reader->comp_dir = DW_STRING (comp_dir); | |
5434 | ||
b0c7bfa9 DE |
5435 | /* Skip dummy compilation units. */ |
5436 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
5437 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
5438 | return 0; | |
5439 | ||
5440 | *result_info_ptr = info_ptr; | |
5441 | return 1; | |
5442 | } | |
5443 | ||
5444 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
5445 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 5446 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
5447 | |
5448 | static struct dwo_unit * | |
5449 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
5450 | struct die_info *comp_unit_die) | |
5451 | { | |
5452 | struct dwarf2_cu *cu = this_cu->cu; | |
5453 | struct attribute *attr; | |
5454 | ULONGEST signature; | |
5455 | struct dwo_unit *dwo_unit; | |
5456 | const char *comp_dir, *dwo_name; | |
5457 | ||
a2ce51a0 DE |
5458 | gdb_assert (cu != NULL); |
5459 | ||
b0c7bfa9 | 5460 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
5461 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5462 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
5463 | |
5464 | if (this_cu->is_debug_types) | |
5465 | { | |
5466 | struct signatured_type *sig_type; | |
5467 | ||
5468 | /* Since this_cu is the first member of struct signatured_type, | |
5469 | we can go from a pointer to one to a pointer to the other. */ | |
5470 | sig_type = (struct signatured_type *) this_cu; | |
5471 | signature = sig_type->signature; | |
5472 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
5473 | } | |
5474 | else | |
5475 | { | |
5476 | struct attribute *attr; | |
5477 | ||
5478 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
5479 | if (! attr) | |
5480 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
5481 | " [in module %s]"), | |
4262abfb | 5482 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
5483 | signature = DW_UNSND (attr); |
5484 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
5485 | signature); | |
5486 | } | |
5487 | ||
b0c7bfa9 DE |
5488 | return dwo_unit; |
5489 | } | |
5490 | ||
a2ce51a0 | 5491 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 DE |
5492 | See it for a description of the parameters. |
5493 | Read a TU directly from a DWO file, bypassing the stub. | |
5494 | ||
5495 | Note: This function could be a little bit simpler if we shared cleanups | |
5496 | with our caller, init_cutu_and_read_dies. That's generally a fragile thing | |
5497 | to do, so we keep this function self-contained. Or we could move this | |
5498 | into our caller, but it's complex enough already. */ | |
a2ce51a0 DE |
5499 | |
5500 | static void | |
6aa5f3a6 DE |
5501 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
5502 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
5503 | die_reader_func_ftype *die_reader_func, |
5504 | void *data) | |
5505 | { | |
5506 | struct dwarf2_cu *cu; | |
5507 | struct signatured_type *sig_type; | |
6aa5f3a6 | 5508 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
a2ce51a0 DE |
5509 | struct die_reader_specs reader; |
5510 | const gdb_byte *info_ptr; | |
5511 | struct die_info *comp_unit_die; | |
5512 | int has_children; | |
5513 | ||
5514 | /* Verify we can do the following downcast, and that we have the | |
5515 | data we need. */ | |
5516 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
5517 | sig_type = (struct signatured_type *) this_cu; | |
5518 | gdb_assert (sig_type->dwo_unit != NULL); | |
5519 | ||
5520 | cleanups = make_cleanup (null_cleanup, NULL); | |
5521 | ||
6aa5f3a6 DE |
5522 | if (use_existing_cu && this_cu->cu != NULL) |
5523 | { | |
5524 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
5525 | cu = this_cu->cu; | |
5526 | /* There's no need to do the rereading_dwo_cu handling that | |
5527 | init_cutu_and_read_dies does since we don't read the stub. */ | |
5528 | } | |
5529 | else | |
5530 | { | |
5531 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5532 | gdb_assert (this_cu->cu == NULL); | |
8d749320 | 5533 | cu = XNEW (struct dwarf2_cu); |
6aa5f3a6 DE |
5534 | init_one_comp_unit (cu, this_cu); |
5535 | /* If an error occurs while loading, release our storage. */ | |
5536 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
5537 | } | |
5538 | ||
5539 | /* A future optimization, if needed, would be to use an existing | |
5540 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
5541 | could share abbrev tables. */ | |
a2ce51a0 DE |
5542 | |
5543 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
5544 | 0 /* abbrev_table_provided */, | |
5545 | NULL /* stub_comp_unit_die */, | |
5546 | sig_type->dwo_unit->dwo_file->comp_dir, | |
5547 | &reader, &info_ptr, | |
5548 | &comp_unit_die, &has_children) == 0) | |
5549 | { | |
5550 | /* Dummy die. */ | |
5551 | do_cleanups (cleanups); | |
5552 | return; | |
5553 | } | |
5554 | ||
5555 | /* All the "real" work is done here. */ | |
5556 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5557 | ||
6aa5f3a6 | 5558 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
5559 | but the alternative is making the latter more complex. |
5560 | This function is only for the special case of using DWO files directly: | |
5561 | no point in overly complicating the general case just to handle this. */ | |
6aa5f3a6 | 5562 | if (free_cu_cleanup != NULL) |
a2ce51a0 | 5563 | { |
6aa5f3a6 DE |
5564 | if (keep) |
5565 | { | |
5566 | /* We've successfully allocated this compilation unit. Let our | |
5567 | caller clean it up when finished with it. */ | |
5568 | discard_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5569 | |
6aa5f3a6 DE |
5570 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5571 | So we have to manually free the abbrev table. */ | |
5572 | dwarf2_free_abbrev_table (cu); | |
a2ce51a0 | 5573 | |
6aa5f3a6 DE |
5574 | /* Link this CU into read_in_chain. */ |
5575 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5576 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5577 | } | |
5578 | else | |
5579 | do_cleanups (free_cu_cleanup); | |
a2ce51a0 | 5580 | } |
a2ce51a0 DE |
5581 | |
5582 | do_cleanups (cleanups); | |
5583 | } | |
5584 | ||
fd820528 | 5585 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 5586 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 5587 | |
f4dc4d17 DE |
5588 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
5589 | Otherwise the table specified in the comp unit header is read in and used. | |
5590 | This is an optimization for when we already have the abbrev table. | |
5591 | ||
dee91e82 DE |
5592 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
5593 | Otherwise, a new CU is allocated with xmalloc. | |
5594 | ||
5595 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
5596 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
5597 | ||
5598 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 5599 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 5600 | |
70221824 | 5601 | static void |
fd820528 | 5602 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 5603 | struct abbrev_table *abbrev_table, |
fd820528 DE |
5604 | int use_existing_cu, int keep, |
5605 | die_reader_func_ftype *die_reader_func, | |
5606 | void *data) | |
c906108c | 5607 | { |
dee91e82 | 5608 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 5609 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5610 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5611 | struct dwarf2_cu *cu; |
d521ce57 | 5612 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 5613 | struct die_reader_specs reader; |
d85a05f0 | 5614 | struct die_info *comp_unit_die; |
dee91e82 | 5615 | int has_children; |
d85a05f0 | 5616 | struct attribute *attr; |
365156ad | 5617 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 5618 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 5619 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
5620 | /* Non-zero if CU currently points to a DWO file and we need to |
5621 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 5622 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 5623 | int rereading_dwo_cu = 0; |
c906108c | 5624 | |
b4f54984 | 5625 | if (dwarf_die_debug) |
09406207 DE |
5626 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
5627 | this_cu->is_debug_types ? "type" : "comp", | |
9c541725 | 5628 | to_underlying (this_cu->sect_off)); |
09406207 | 5629 | |
dee91e82 DE |
5630 | if (use_existing_cu) |
5631 | gdb_assert (keep); | |
23745b47 | 5632 | |
a2ce51a0 DE |
5633 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
5634 | file (instead of going through the stub), short-circuit all of this. */ | |
5635 | if (this_cu->reading_dwo_directly) | |
5636 | { | |
5637 | /* Narrow down the scope of possibilities to have to understand. */ | |
5638 | gdb_assert (this_cu->is_debug_types); | |
5639 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
5640 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
5641 | die_reader_func, data); | |
a2ce51a0 DE |
5642 | return; |
5643 | } | |
5644 | ||
dee91e82 DE |
5645 | cleanups = make_cleanup (null_cleanup, NULL); |
5646 | ||
5647 | /* This is cheap if the section is already read in. */ | |
5648 | dwarf2_read_section (objfile, section); | |
5649 | ||
9c541725 | 5650 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
5651 | |
5652 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
5653 | |
5654 | if (use_existing_cu && this_cu->cu != NULL) | |
5655 | { | |
5656 | cu = this_cu->cu; | |
42e7ad6c DE |
5657 | /* If this CU is from a DWO file we need to start over, we need to |
5658 | refetch the attributes from the skeleton CU. | |
5659 | This could be optimized by retrieving those attributes from when we | |
5660 | were here the first time: the previous comp_unit_die was stored in | |
5661 | comp_unit_obstack. But there's no data yet that we need this | |
5662 | optimization. */ | |
5663 | if (cu->dwo_unit != NULL) | |
5664 | rereading_dwo_cu = 1; | |
dee91e82 DE |
5665 | } |
5666 | else | |
5667 | { | |
5668 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5669 | gdb_assert (this_cu->cu == NULL); | |
8d749320 | 5670 | cu = XNEW (struct dwarf2_cu); |
dee91e82 | 5671 | init_one_comp_unit (cu, this_cu); |
dee91e82 | 5672 | /* If an error occurs while loading, release our storage. */ |
365156ad | 5673 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 5674 | } |
dee91e82 | 5675 | |
b0c7bfa9 | 5676 | /* Get the header. */ |
9c541725 | 5677 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
5678 | { |
5679 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 5680 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
5681 | } |
5682 | else | |
5683 | { | |
3019eac3 | 5684 | if (this_cu->is_debug_types) |
dee91e82 | 5685 | { |
43988095 | 5686 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4bdcc0c1 | 5687 | abbrev_section, info_ptr, |
43988095 | 5688 | rcuh_kind::TYPE); |
dee91e82 | 5689 | |
42e7ad6c DE |
5690 | /* Since per_cu is the first member of struct signatured_type, |
5691 | we can go from a pointer to one to a pointer to the other. */ | |
5692 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 5693 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
5694 | gdb_assert (sig_type->type_offset_in_tu |
5695 | == cu->header.type_cu_offset_in_tu); | |
5696 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 5697 | |
42e7ad6c DE |
5698 | /* LENGTH has not been set yet for type units if we're |
5699 | using .gdb_index. */ | |
1ce1cefd | 5700 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
5701 | |
5702 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
5703 | sig_type->type_offset_in_section = |
5704 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
5705 | |
5706 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
5707 | } |
5708 | else | |
5709 | { | |
4bdcc0c1 DE |
5710 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
5711 | abbrev_section, | |
43988095 JK |
5712 | info_ptr, |
5713 | rcuh_kind::COMPILE); | |
dee91e82 | 5714 | |
9c541725 | 5715 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 5716 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 5717 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
5718 | } |
5719 | } | |
10b3939b | 5720 | |
6caca83c | 5721 | /* Skip dummy compilation units. */ |
dee91e82 | 5722 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
5723 | || peek_abbrev_code (abfd, info_ptr) == 0) |
5724 | { | |
dee91e82 | 5725 | do_cleanups (cleanups); |
21b2bd31 | 5726 | return; |
6caca83c CC |
5727 | } |
5728 | ||
433df2d4 DE |
5729 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
5730 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
5731 | done. Note that it's important that if the CU had an abbrev table |
5732 | on entry we don't free it when we're done: Somewhere up the call stack | |
5733 | it may be in use. */ | |
f4dc4d17 DE |
5734 | if (abbrev_table != NULL) |
5735 | { | |
5736 | gdb_assert (cu->abbrev_table == NULL); | |
9c541725 | 5737 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
f4dc4d17 DE |
5738 | cu->abbrev_table = abbrev_table; |
5739 | } | |
5740 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 5741 | { |
4bdcc0c1 | 5742 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
5743 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5744 | } | |
42e7ad6c DE |
5745 | else if (rereading_dwo_cu) |
5746 | { | |
5747 | dwarf2_free_abbrev_table (cu); | |
5748 | dwarf2_read_abbrevs (cu, abbrev_section); | |
5749 | } | |
af703f96 | 5750 | |
dee91e82 | 5751 | /* Read the top level CU/TU die. */ |
3019eac3 | 5752 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 5753 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 5754 | |
b0c7bfa9 DE |
5755 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
5756 | from the DWO file. | |
5757 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
5758 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
5759 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5760 | if (attr) | |
5761 | { | |
3019eac3 | 5762 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 5763 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
5764 | |
5765 | if (has_children) | |
6a506a2d DE |
5766 | { |
5767 | complaint (&symfile_complaints, | |
5768 | _("compilation unit with DW_AT_GNU_dwo_name" | |
5769 | " has children (offset 0x%x) [in module %s]"), | |
9c541725 | 5770 | to_underlying (this_cu->sect_off), bfd_get_filename (abfd)); |
6a506a2d | 5771 | } |
b0c7bfa9 | 5772 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 5773 | if (dwo_unit != NULL) |
3019eac3 | 5774 | { |
6a506a2d DE |
5775 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
5776 | abbrev_table != NULL, | |
a2ce51a0 | 5777 | comp_unit_die, NULL, |
6a506a2d DE |
5778 | &reader, &info_ptr, |
5779 | &dwo_comp_unit_die, &has_children) == 0) | |
5780 | { | |
5781 | /* Dummy die. */ | |
5782 | do_cleanups (cleanups); | |
5783 | return; | |
5784 | } | |
5785 | comp_unit_die = dwo_comp_unit_die; | |
5786 | } | |
5787 | else | |
5788 | { | |
5789 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
5790 | the stub. A complaint has already been logged. There's | |
5791 | not much more we can do except pass on the stub DIE to | |
5792 | die_reader_func. We don't want to throw an error on bad | |
5793 | debug info. */ | |
3019eac3 DE |
5794 | } |
5795 | } | |
5796 | ||
b0c7bfa9 | 5797 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
5798 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
5799 | ||
b0c7bfa9 | 5800 | /* Done, clean up. */ |
365156ad | 5801 | if (free_cu_cleanup != NULL) |
348e048f | 5802 | { |
365156ad TT |
5803 | if (keep) |
5804 | { | |
5805 | /* We've successfully allocated this compilation unit. Let our | |
5806 | caller clean it up when finished with it. */ | |
5807 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 5808 | |
365156ad TT |
5809 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5810 | So we have to manually free the abbrev table. */ | |
5811 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 5812 | |
365156ad TT |
5813 | /* Link this CU into read_in_chain. */ |
5814 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5815 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5816 | } | |
5817 | else | |
5818 | do_cleanups (free_cu_cleanup); | |
348e048f | 5819 | } |
365156ad TT |
5820 | |
5821 | do_cleanups (cleanups); | |
dee91e82 DE |
5822 | } |
5823 | ||
33e80786 DE |
5824 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
5825 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
5826 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
5827 | |
5828 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 5829 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
5830 | |
5831 | We fill in THIS_CU->length. | |
5832 | ||
5833 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
5834 | linker) then DIE_READER_FUNC will not get called. | |
5835 | ||
5836 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5837 | This is done in order to not leave THIS_CU->cu in a state where we have |
5838 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
5839 | |
5840 | static void | |
5841 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 5842 | struct dwo_file *dwo_file, |
dee91e82 DE |
5843 | die_reader_func_ftype *die_reader_func, |
5844 | void *data) | |
5845 | { | |
5846 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 5847 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5848 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 5849 | struct dwarf2_section_info *abbrev_section; |
dee91e82 | 5850 | struct dwarf2_cu cu; |
d521ce57 | 5851 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
5852 | struct die_reader_specs reader; |
5853 | struct cleanup *cleanups; | |
5854 | struct die_info *comp_unit_die; | |
5855 | int has_children; | |
5856 | ||
b4f54984 | 5857 | if (dwarf_die_debug) |
09406207 DE |
5858 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", |
5859 | this_cu->is_debug_types ? "type" : "comp", | |
9c541725 | 5860 | to_underlying (this_cu->sect_off)); |
09406207 | 5861 | |
dee91e82 DE |
5862 | gdb_assert (this_cu->cu == NULL); |
5863 | ||
33e80786 DE |
5864 | abbrev_section = (dwo_file != NULL |
5865 | ? &dwo_file->sections.abbrev | |
5866 | : get_abbrev_section_for_cu (this_cu)); | |
5867 | ||
dee91e82 DE |
5868 | /* This is cheap if the section is already read in. */ |
5869 | dwarf2_read_section (objfile, section); | |
5870 | ||
5871 | init_one_comp_unit (&cu, this_cu); | |
5872 | ||
5873 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
5874 | ||
9c541725 | 5875 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
4bdcc0c1 DE |
5876 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
5877 | abbrev_section, info_ptr, | |
43988095 JK |
5878 | (this_cu->is_debug_types |
5879 | ? rcuh_kind::TYPE | |
5880 | : rcuh_kind::COMPILE)); | |
dee91e82 | 5881 | |
1ce1cefd | 5882 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
5883 | |
5884 | /* Skip dummy compilation units. */ | |
5885 | if (info_ptr >= begin_info_ptr + this_cu->length | |
5886 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 5887 | { |
dee91e82 | 5888 | do_cleanups (cleanups); |
21b2bd31 | 5889 | return; |
93311388 | 5890 | } |
72bf9492 | 5891 | |
dee91e82 DE |
5892 | dwarf2_read_abbrevs (&cu, abbrev_section); |
5893 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
5894 | ||
3019eac3 | 5895 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
5896 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
5897 | ||
5898 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5899 | ||
5900 | do_cleanups (cleanups); | |
5901 | } | |
5902 | ||
3019eac3 DE |
5903 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
5904 | does not lookup the specified DWO file. | |
5905 | This cannot be used to read DWO files. | |
dee91e82 DE |
5906 | |
5907 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5908 | This is done in order to not leave THIS_CU->cu in a state where we have |
5909 | to care whether it refers to the "main" CU or the DWO CU. | |
5910 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
5911 | |
5912 | static void | |
5913 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
5914 | die_reader_func_ftype *die_reader_func, | |
5915 | void *data) | |
5916 | { | |
33e80786 | 5917 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 5918 | } |
0018ea6f DE |
5919 | \f |
5920 | /* Type Unit Groups. | |
dee91e82 | 5921 | |
0018ea6f DE |
5922 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
5923 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
5924 | so that all types coming from the same compilation (.o file) are grouped | |
5925 | together. A future step could be to put the types in the same symtab as | |
5926 | the CU the types ultimately came from. */ | |
ff013f42 | 5927 | |
f4dc4d17 DE |
5928 | static hashval_t |
5929 | hash_type_unit_group (const void *item) | |
5930 | { | |
9a3c8263 SM |
5931 | const struct type_unit_group *tu_group |
5932 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 5933 | |
094b34ac | 5934 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5935 | } |
348e048f DE |
5936 | |
5937 | static int | |
f4dc4d17 | 5938 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5939 | { |
9a3c8263 SM |
5940 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
5941 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 5942 | |
094b34ac | 5943 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5944 | } |
348e048f | 5945 | |
f4dc4d17 DE |
5946 | /* Allocate a hash table for type unit groups. */ |
5947 | ||
5948 | static htab_t | |
5949 | allocate_type_unit_groups_table (void) | |
5950 | { | |
5951 | return htab_create_alloc_ex (3, | |
5952 | hash_type_unit_group, | |
5953 | eq_type_unit_group, | |
5954 | NULL, | |
5955 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5956 | hashtab_obstack_allocate, | |
5957 | dummy_obstack_deallocate); | |
5958 | } | |
dee91e82 | 5959 | |
f4dc4d17 DE |
5960 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5961 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5962 | of any one psymtab grow too big. */ | |
5963 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5964 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5965 | |
094b34ac | 5966 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5967 | Create the type_unit_group object used to hold one or more TUs. */ |
5968 | ||
5969 | static struct type_unit_group * | |
094b34ac | 5970 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5971 | { |
5972 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5973 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5974 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5975 | |
5976 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5977 | struct type_unit_group); | |
094b34ac | 5978 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 5979 | per_cu->objfile = objfile; |
f4dc4d17 | 5980 | |
094b34ac DE |
5981 | if (dwarf2_per_objfile->using_index) |
5982 | { | |
5983 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5984 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
5985 | } |
5986 | else | |
5987 | { | |
9c541725 | 5988 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac DE |
5989 | struct partial_symtab *pst; |
5990 | char *name; | |
5991 | ||
5992 | /* Give the symtab a useful name for debug purposes. */ | |
5993 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5994 | name = xstrprintf ("<type_units_%d>", | |
5995 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5996 | else | |
5997 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5998 | ||
5999 | pst = create_partial_symtab (per_cu, name); | |
6000 | pst->anonymous = 1; | |
f4dc4d17 | 6001 | |
094b34ac DE |
6002 | xfree (name); |
6003 | } | |
f4dc4d17 | 6004 | |
094b34ac | 6005 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 6006 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
6007 | |
6008 | return tu_group; | |
6009 | } | |
6010 | ||
094b34ac DE |
6011 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
6012 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
6013 | |
6014 | static struct type_unit_group * | |
ff39bb5e | 6015 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
6016 | { |
6017 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6018 | struct type_unit_group *tu_group; | |
6019 | void **slot; | |
6020 | unsigned int line_offset; | |
6021 | struct type_unit_group type_unit_group_for_lookup; | |
6022 | ||
6023 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
6024 | { | |
6025 | dwarf2_per_objfile->type_unit_groups = | |
6026 | allocate_type_unit_groups_table (); | |
6027 | } | |
6028 | ||
6029 | /* Do we need to create a new group, or can we use an existing one? */ | |
6030 | ||
6031 | if (stmt_list) | |
6032 | { | |
6033 | line_offset = DW_UNSND (stmt_list); | |
6034 | ++tu_stats->nr_symtab_sharers; | |
6035 | } | |
6036 | else | |
6037 | { | |
6038 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
6039 | We can do various things here like create one group per TU or | |
6040 | spread them over multiple groups to split up the expansion work. | |
6041 | To avoid worst case scenarios (too many groups or too large groups) | |
6042 | we, umm, group them in bunches. */ | |
6043 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
6044 | | (tu_stats->nr_stmt_less_type_units | |
6045 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
6046 | ++tu_stats->nr_stmt_less_type_units; | |
6047 | } | |
6048 | ||
094b34ac | 6049 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 6050 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
6051 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
6052 | &type_unit_group_for_lookup, INSERT); | |
6053 | if (*slot != NULL) | |
6054 | { | |
9a3c8263 | 6055 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
6056 | gdb_assert (tu_group != NULL); |
6057 | } | |
6058 | else | |
6059 | { | |
9c541725 | 6060 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 6061 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
6062 | *slot = tu_group; |
6063 | ++tu_stats->nr_symtabs; | |
6064 | } | |
6065 | ||
6066 | return tu_group; | |
6067 | } | |
0018ea6f DE |
6068 | \f |
6069 | /* Partial symbol tables. */ | |
6070 | ||
6071 | /* Create a psymtab named NAME and assign it to PER_CU. | |
6072 | ||
6073 | The caller must fill in the following details: | |
6074 | dirname, textlow, texthigh. */ | |
6075 | ||
6076 | static struct partial_symtab * | |
6077 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
6078 | { | |
6079 | struct objfile *objfile = per_cu->objfile; | |
6080 | struct partial_symtab *pst; | |
6081 | ||
18a94d75 | 6082 | pst = start_psymtab_common (objfile, name, 0, |
0018ea6f DE |
6083 | objfile->global_psymbols.next, |
6084 | objfile->static_psymbols.next); | |
6085 | ||
6086 | pst->psymtabs_addrmap_supported = 1; | |
6087 | ||
6088 | /* This is the glue that links PST into GDB's symbol API. */ | |
6089 | pst->read_symtab_private = per_cu; | |
6090 | pst->read_symtab = dwarf2_read_symtab; | |
6091 | per_cu->v.psymtab = pst; | |
6092 | ||
6093 | return pst; | |
6094 | } | |
6095 | ||
b93601f3 TT |
6096 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
6097 | type. */ | |
6098 | ||
6099 | struct process_psymtab_comp_unit_data | |
6100 | { | |
6101 | /* True if we are reading a DW_TAG_partial_unit. */ | |
6102 | ||
6103 | int want_partial_unit; | |
6104 | ||
6105 | /* The "pretend" language that is used if the CU doesn't declare a | |
6106 | language. */ | |
6107 | ||
6108 | enum language pretend_language; | |
6109 | }; | |
6110 | ||
0018ea6f DE |
6111 | /* die_reader_func for process_psymtab_comp_unit. */ |
6112 | ||
6113 | static void | |
6114 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6115 | const gdb_byte *info_ptr, |
0018ea6f DE |
6116 | struct die_info *comp_unit_die, |
6117 | int has_children, | |
6118 | void *data) | |
6119 | { | |
6120 | struct dwarf2_cu *cu = reader->cu; | |
6121 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 6122 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 6123 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
6124 | CORE_ADDR baseaddr; |
6125 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
6126 | struct partial_symtab *pst; | |
3a2b436a | 6127 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 6128 | const char *filename; |
9a3c8263 SM |
6129 | struct process_psymtab_comp_unit_data *info |
6130 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 6131 | |
b93601f3 | 6132 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
6133 | return; |
6134 | ||
6135 | gdb_assert (! per_cu->is_debug_types); | |
6136 | ||
b93601f3 | 6137 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
6138 | |
6139 | cu->list_in_scope = &file_symbols; | |
6140 | ||
6141 | /* Allocate a new partial symbol table structure. */ | |
7d45c7c3 KB |
6142 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
6143 | if (filename == NULL) | |
0018ea6f | 6144 | filename = ""; |
0018ea6f DE |
6145 | |
6146 | pst = create_partial_symtab (per_cu, filename); | |
6147 | ||
6148 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 6149 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
6150 | |
6151 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6152 | ||
6153 | dwarf2_find_base_address (comp_unit_die, cu); | |
6154 | ||
6155 | /* Possibly set the default values of LOWPC and HIGHPC from | |
6156 | `DW_AT_ranges'. */ | |
3a2b436a JK |
6157 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
6158 | &best_highpc, cu, pst); | |
6159 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
0018ea6f DE |
6160 | /* Store the contiguous range if it is not empty; it can be empty for |
6161 | CUs with no code. */ | |
6162 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
6163 | gdbarch_adjust_dwarf2_addr (gdbarch, |
6164 | best_lowpc + baseaddr), | |
6165 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
6166 | best_highpc + baseaddr) - 1, | |
6167 | pst); | |
0018ea6f DE |
6168 | |
6169 | /* Check if comp unit has_children. | |
6170 | If so, read the rest of the partial symbols from this comp unit. | |
6171 | If not, there's no more debug_info for this comp unit. */ | |
6172 | if (has_children) | |
6173 | { | |
6174 | struct partial_die_info *first_die; | |
6175 | CORE_ADDR lowpc, highpc; | |
6176 | ||
6177 | lowpc = ((CORE_ADDR) -1); | |
6178 | highpc = ((CORE_ADDR) 0); | |
6179 | ||
6180 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6181 | ||
6182 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 6183 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
6184 | |
6185 | /* If we didn't find a lowpc, set it to highpc to avoid | |
6186 | complaints from `maint check'. */ | |
6187 | if (lowpc == ((CORE_ADDR) -1)) | |
6188 | lowpc = highpc; | |
6189 | ||
6190 | /* If the compilation unit didn't have an explicit address range, | |
6191 | then use the information extracted from its child dies. */ | |
e385593e | 6192 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
6193 | { |
6194 | best_lowpc = lowpc; | |
6195 | best_highpc = highpc; | |
6196 | } | |
6197 | } | |
3e29f34a MR |
6198 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
6199 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f | 6200 | |
8763cede | 6201 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
6202 | |
6203 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
6204 | { | |
6205 | int i; | |
6206 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6207 | struct dwarf2_per_cu_data *iter; | |
6208 | ||
6209 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
6210 | post-pass. */ | |
6211 | pst->number_of_dependencies = len; | |
8d749320 SM |
6212 | pst->dependencies = |
6213 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
0018ea6f DE |
6214 | for (i = 0; |
6215 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6216 | i, iter); | |
6217 | ++i) | |
6218 | pst->dependencies[i] = iter->v.psymtab; | |
6219 | ||
6220 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6221 | } | |
6222 | ||
6223 | /* Get the list of files included in the current compilation unit, | |
6224 | and build a psymtab for each of them. */ | |
6225 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
6226 | ||
b4f54984 | 6227 | if (dwarf_read_debug) |
0018ea6f DE |
6228 | { |
6229 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6230 | ||
6231 | fprintf_unfiltered (gdb_stdlog, | |
6232 | "Psymtab for %s unit @0x%x: %s - %s" | |
6233 | ", %d global, %d static syms\n", | |
6234 | per_cu->is_debug_types ? "type" : "comp", | |
9c541725 | 6235 | to_underlying (per_cu->sect_off), |
0018ea6f DE |
6236 | paddress (gdbarch, pst->textlow), |
6237 | paddress (gdbarch, pst->texthigh), | |
6238 | pst->n_global_syms, pst->n_static_syms); | |
6239 | } | |
6240 | } | |
6241 | ||
6242 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6243 | Process compilation unit THIS_CU for a psymtab. */ | |
6244 | ||
6245 | static void | |
6246 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
6247 | int want_partial_unit, |
6248 | enum language pretend_language) | |
0018ea6f | 6249 | { |
b93601f3 TT |
6250 | struct process_psymtab_comp_unit_data info; |
6251 | ||
0018ea6f DE |
6252 | /* If this compilation unit was already read in, free the |
6253 | cached copy in order to read it in again. This is | |
6254 | necessary because we skipped some symbols when we first | |
6255 | read in the compilation unit (see load_partial_dies). | |
6256 | This problem could be avoided, but the benefit is unclear. */ | |
6257 | if (this_cu->cu != NULL) | |
6258 | free_one_cached_comp_unit (this_cu); | |
6259 | ||
6260 | gdb_assert (! this_cu->is_debug_types); | |
b93601f3 TT |
6261 | info.want_partial_unit = want_partial_unit; |
6262 | info.pretend_language = pretend_language; | |
0018ea6f DE |
6263 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
6264 | process_psymtab_comp_unit_reader, | |
b93601f3 | 6265 | &info); |
0018ea6f DE |
6266 | |
6267 | /* Age out any secondary CUs. */ | |
6268 | age_cached_comp_units (); | |
6269 | } | |
f4dc4d17 DE |
6270 | |
6271 | /* Reader function for build_type_psymtabs. */ | |
6272 | ||
6273 | static void | |
6274 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6275 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
6276 | struct die_info *type_unit_die, |
6277 | int has_children, | |
6278 | void *data) | |
6279 | { | |
6280 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6281 | struct dwarf2_cu *cu = reader->cu; | |
6282 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 6283 | struct signatured_type *sig_type; |
f4dc4d17 DE |
6284 | struct type_unit_group *tu_group; |
6285 | struct attribute *attr; | |
6286 | struct partial_die_info *first_die; | |
6287 | CORE_ADDR lowpc, highpc; | |
6288 | struct partial_symtab *pst; | |
6289 | ||
6290 | gdb_assert (data == NULL); | |
0186c6a7 DE |
6291 | gdb_assert (per_cu->is_debug_types); |
6292 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
6293 | |
6294 | if (! has_children) | |
6295 | return; | |
6296 | ||
6297 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 6298 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 6299 | |
0186c6a7 | 6300 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
6301 | |
6302 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
6303 | cu->list_in_scope = &file_symbols; | |
6304 | pst = create_partial_symtab (per_cu, ""); | |
6305 | pst->anonymous = 1; | |
6306 | ||
6307 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6308 | ||
6309 | lowpc = (CORE_ADDR) -1; | |
6310 | highpc = (CORE_ADDR) 0; | |
6311 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
6312 | ||
8763cede | 6313 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
6314 | } |
6315 | ||
73051182 DE |
6316 | /* Struct used to sort TUs by their abbreviation table offset. */ |
6317 | ||
6318 | struct tu_abbrev_offset | |
6319 | { | |
6320 | struct signatured_type *sig_type; | |
6321 | sect_offset abbrev_offset; | |
6322 | }; | |
6323 | ||
6324 | /* Helper routine for build_type_psymtabs_1, passed to qsort. */ | |
6325 | ||
6326 | static int | |
6327 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
6328 | { | |
9a3c8263 SM |
6329 | const struct tu_abbrev_offset * const *a |
6330 | = (const struct tu_abbrev_offset * const*) ap; | |
6331 | const struct tu_abbrev_offset * const *b | |
6332 | = (const struct tu_abbrev_offset * const*) bp; | |
9c541725 PA |
6333 | sect_offset aoff = (*a)->abbrev_offset; |
6334 | sect_offset boff = (*b)->abbrev_offset; | |
73051182 DE |
6335 | |
6336 | return (aoff > boff) - (aoff < boff); | |
6337 | } | |
6338 | ||
6339 | /* Efficiently read all the type units. | |
6340 | This does the bulk of the work for build_type_psymtabs. | |
6341 | ||
6342 | The efficiency is because we sort TUs by the abbrev table they use and | |
6343 | only read each abbrev table once. In one program there are 200K TUs | |
6344 | sharing 8K abbrev tables. | |
6345 | ||
6346 | The main purpose of this function is to support building the | |
6347 | dwarf2_per_objfile->type_unit_groups table. | |
6348 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
6349 | can collapse the search space by grouping them by stmt_list. | |
6350 | The savings can be significant, in the same program from above the 200K TUs | |
6351 | share 8K stmt_list tables. | |
6352 | ||
6353 | FUNC is expected to call get_type_unit_group, which will create the | |
6354 | struct type_unit_group if necessary and add it to | |
6355 | dwarf2_per_objfile->type_unit_groups. */ | |
6356 | ||
6357 | static void | |
6358 | build_type_psymtabs_1 (void) | |
6359 | { | |
73051182 DE |
6360 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
6361 | struct cleanup *cleanups; | |
6362 | struct abbrev_table *abbrev_table; | |
6363 | sect_offset abbrev_offset; | |
6364 | struct tu_abbrev_offset *sorted_by_abbrev; | |
73051182 DE |
6365 | int i; |
6366 | ||
6367 | /* It's up to the caller to not call us multiple times. */ | |
6368 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
6369 | ||
6370 | if (dwarf2_per_objfile->n_type_units == 0) | |
6371 | return; | |
6372 | ||
6373 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
6374 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
6375 | read each abbrev table in. | |
6376 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
6377 | This is simpler and efficient enough for now. | |
6378 | ||
6379 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
6380 | symtab to use). Typically TUs with the same abbrev offset have the same | |
6381 | stmt_list value too so in practice this should work well. | |
6382 | ||
6383 | The basic algorithm here is: | |
6384 | ||
6385 | sort TUs by abbrev table | |
6386 | for each TU with same abbrev table: | |
6387 | read abbrev table if first user | |
6388 | read TU top level DIE | |
6389 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
6390 | call FUNC */ | |
6391 | ||
b4f54984 | 6392 | if (dwarf_read_debug) |
73051182 DE |
6393 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
6394 | ||
6395 | /* Sort in a separate table to maintain the order of all_type_units | |
6396 | for .gdb_index: TU indices directly index all_type_units. */ | |
6397 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
6398 | dwarf2_per_objfile->n_type_units); | |
6399 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6400 | { | |
6401 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
6402 | ||
6403 | sorted_by_abbrev[i].sig_type = sig_type; | |
6404 | sorted_by_abbrev[i].abbrev_offset = | |
6405 | read_abbrev_offset (sig_type->per_cu.section, | |
9c541725 | 6406 | sig_type->per_cu.sect_off); |
73051182 DE |
6407 | } |
6408 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
6409 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
6410 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
6411 | ||
9c541725 | 6412 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 DE |
6413 | abbrev_table = NULL; |
6414 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
6415 | ||
6416 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
6417 | { | |
6418 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
6419 | ||
6420 | /* Switch to the next abbrev table if necessary. */ | |
6421 | if (abbrev_table == NULL | |
9c541725 | 6422 | || tu->abbrev_offset != abbrev_offset) |
73051182 DE |
6423 | { |
6424 | if (abbrev_table != NULL) | |
6425 | { | |
6426 | abbrev_table_free (abbrev_table); | |
6427 | /* Reset to NULL in case abbrev_table_read_table throws | |
6428 | an error: abbrev_table_free_cleanup will get called. */ | |
6429 | abbrev_table = NULL; | |
6430 | } | |
6431 | abbrev_offset = tu->abbrev_offset; | |
6432 | abbrev_table = | |
6433 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
6434 | abbrev_offset); | |
6435 | ++tu_stats->nr_uniq_abbrev_tables; | |
6436 | } | |
6437 | ||
6438 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
6439 | build_type_psymtabs_reader, NULL); | |
6440 | } | |
6441 | ||
73051182 | 6442 | do_cleanups (cleanups); |
6aa5f3a6 | 6443 | } |
73051182 | 6444 | |
6aa5f3a6 DE |
6445 | /* Print collected type unit statistics. */ |
6446 | ||
6447 | static void | |
6448 | print_tu_stats (void) | |
6449 | { | |
6450 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
6451 | ||
6452 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
6453 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
6454 | dwarf2_per_objfile->n_type_units); | |
6455 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
6456 | tu_stats->nr_uniq_abbrev_tables); | |
6457 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
6458 | tu_stats->nr_symtabs); | |
6459 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
6460 | tu_stats->nr_symtab_sharers); | |
6461 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
6462 | tu_stats->nr_stmt_less_type_units); | |
6463 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
6464 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
6465 | } |
6466 | ||
f4dc4d17 DE |
6467 | /* Traversal function for build_type_psymtabs. */ |
6468 | ||
6469 | static int | |
6470 | build_type_psymtab_dependencies (void **slot, void *info) | |
6471 | { | |
6472 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6473 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 6474 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 6475 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
6476 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
6477 | struct signatured_type *iter; | |
f4dc4d17 DE |
6478 | int i; |
6479 | ||
6480 | gdb_assert (len > 0); | |
0186c6a7 | 6481 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
6482 | |
6483 | pst->number_of_dependencies = len; | |
8d749320 SM |
6484 | pst->dependencies = |
6485 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
f4dc4d17 | 6486 | for (i = 0; |
0186c6a7 | 6487 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
6488 | ++i) |
6489 | { | |
0186c6a7 DE |
6490 | gdb_assert (iter->per_cu.is_debug_types); |
6491 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 6492 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
6493 | } |
6494 | ||
0186c6a7 | 6495 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
6496 | |
6497 | return 1; | |
6498 | } | |
6499 | ||
6500 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6501 | Build partial symbol tables for the .debug_types comp-units. */ | |
6502 | ||
6503 | static void | |
6504 | build_type_psymtabs (struct objfile *objfile) | |
6505 | { | |
0e50663e | 6506 | if (! create_all_type_units (objfile)) |
348e048f DE |
6507 | return; |
6508 | ||
73051182 | 6509 | build_type_psymtabs_1 (); |
6aa5f3a6 | 6510 | } |
f4dc4d17 | 6511 | |
6aa5f3a6 DE |
6512 | /* Traversal function for process_skeletonless_type_unit. |
6513 | Read a TU in a DWO file and build partial symbols for it. */ | |
6514 | ||
6515 | static int | |
6516 | process_skeletonless_type_unit (void **slot, void *info) | |
6517 | { | |
6518 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
9a3c8263 | 6519 | struct objfile *objfile = (struct objfile *) info; |
6aa5f3a6 DE |
6520 | struct signatured_type find_entry, *entry; |
6521 | ||
6522 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
6523 | ||
6524 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6525 | { | |
6526 | dwarf2_per_objfile->signatured_types | |
6527 | = allocate_signatured_type_table (objfile); | |
6528 | } | |
6529 | ||
6530 | find_entry.signature = dwo_unit->signature; | |
6531 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
6532 | INSERT); | |
6533 | /* If we've already seen this type there's nothing to do. What's happening | |
6534 | is we're doing our own version of comdat-folding here. */ | |
6535 | if (*slot != NULL) | |
6536 | return 1; | |
6537 | ||
6538 | /* This does the job that create_all_type_units would have done for | |
6539 | this TU. */ | |
6540 | entry = add_type_unit (dwo_unit->signature, slot); | |
6541 | fill_in_sig_entry_from_dwo_entry (objfile, entry, dwo_unit); | |
6542 | *slot = entry; | |
6543 | ||
6544 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6545 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
6546 | build_type_psymtabs_reader, NULL); | |
6547 | ||
6548 | return 1; | |
6549 | } | |
6550 | ||
6551 | /* Traversal function for process_skeletonless_type_units. */ | |
6552 | ||
6553 | static int | |
6554 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
6555 | { | |
6556 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
6557 | ||
6558 | if (dwo_file->tus != NULL) | |
6559 | { | |
6560 | htab_traverse_noresize (dwo_file->tus, | |
6561 | process_skeletonless_type_unit, info); | |
6562 | } | |
6563 | ||
6564 | return 1; | |
6565 | } | |
6566 | ||
6567 | /* Scan all TUs of DWO files, verifying we've processed them. | |
6568 | This is needed in case a TU was emitted without its skeleton. | |
6569 | Note: This can't be done until we know what all the DWO files are. */ | |
6570 | ||
6571 | static void | |
6572 | process_skeletonless_type_units (struct objfile *objfile) | |
6573 | { | |
6574 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
6575 | if (get_dwp_file () == NULL | |
6576 | && dwarf2_per_objfile->dwo_files != NULL) | |
6577 | { | |
6578 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
6579 | process_dwo_file_for_skeletonless_type_units, | |
6580 | objfile); | |
6581 | } | |
348e048f DE |
6582 | } |
6583 | ||
60606b2c TT |
6584 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
6585 | ||
6586 | static void | |
6587 | psymtabs_addrmap_cleanup (void *o) | |
6588 | { | |
9a3c8263 | 6589 | struct objfile *objfile = (struct objfile *) o; |
ec61707d | 6590 | |
60606b2c TT |
6591 | objfile->psymtabs_addrmap = NULL; |
6592 | } | |
6593 | ||
95554aad TT |
6594 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
6595 | ||
6596 | static void | |
6597 | set_partial_user (struct objfile *objfile) | |
6598 | { | |
6599 | int i; | |
6600 | ||
6601 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
6602 | { | |
8832e7e3 | 6603 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
95554aad TT |
6604 | struct partial_symtab *pst = per_cu->v.psymtab; |
6605 | int j; | |
6606 | ||
36586728 TT |
6607 | if (pst == NULL) |
6608 | continue; | |
6609 | ||
95554aad TT |
6610 | for (j = 0; j < pst->number_of_dependencies; ++j) |
6611 | { | |
6612 | /* Set the 'user' field only if it is not already set. */ | |
6613 | if (pst->dependencies[j]->user == NULL) | |
6614 | pst->dependencies[j]->user = pst; | |
6615 | } | |
6616 | } | |
6617 | } | |
6618 | ||
93311388 DE |
6619 | /* Build the partial symbol table by doing a quick pass through the |
6620 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 6621 | |
93311388 | 6622 | static void |
c67a9c90 | 6623 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 6624 | { |
60606b2c TT |
6625 | struct cleanup *back_to, *addrmap_cleanup; |
6626 | struct obstack temp_obstack; | |
21b2bd31 | 6627 | int i; |
93311388 | 6628 | |
b4f54984 | 6629 | if (dwarf_read_debug) |
45cfd468 DE |
6630 | { |
6631 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 6632 | objfile_name (objfile)); |
45cfd468 DE |
6633 | } |
6634 | ||
98bfdba5 PA |
6635 | dwarf2_per_objfile->reading_partial_symbols = 1; |
6636 | ||
be391dca | 6637 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 6638 | |
93311388 DE |
6639 | /* Any cached compilation units will be linked by the per-objfile |
6640 | read_in_chain. Make sure to free them when we're done. */ | |
6641 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 6642 | |
348e048f DE |
6643 | build_type_psymtabs (objfile); |
6644 | ||
93311388 | 6645 | create_all_comp_units (objfile); |
c906108c | 6646 | |
60606b2c TT |
6647 | /* Create a temporary address map on a temporary obstack. We later |
6648 | copy this to the final obstack. */ | |
6649 | obstack_init (&temp_obstack); | |
6650 | make_cleanup_obstack_free (&temp_obstack); | |
6651 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
6652 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 6653 | |
21b2bd31 | 6654 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 6655 | { |
8832e7e3 | 6656 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
aaa75496 | 6657 | |
b93601f3 | 6658 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 6659 | } |
ff013f42 | 6660 | |
6aa5f3a6 DE |
6661 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
6662 | process_skeletonless_type_units (objfile); | |
6663 | ||
6664 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
6665 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
6666 | { | |
6667 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
6668 | build_type_psymtab_dependencies, NULL); | |
6669 | } | |
6670 | ||
b4f54984 | 6671 | if (dwarf_read_debug) |
6aa5f3a6 DE |
6672 | print_tu_stats (); |
6673 | ||
95554aad TT |
6674 | set_partial_user (objfile); |
6675 | ||
ff013f42 JK |
6676 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
6677 | &objfile->objfile_obstack); | |
60606b2c | 6678 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 6679 | |
ae038cb0 | 6680 | do_cleanups (back_to); |
45cfd468 | 6681 | |
b4f54984 | 6682 | if (dwarf_read_debug) |
45cfd468 | 6683 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 6684 | objfile_name (objfile)); |
ae038cb0 DJ |
6685 | } |
6686 | ||
3019eac3 | 6687 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
6688 | |
6689 | static void | |
dee91e82 | 6690 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 6691 | const gdb_byte *info_ptr, |
dee91e82 DE |
6692 | struct die_info *comp_unit_die, |
6693 | int has_children, | |
6694 | void *data) | |
ae038cb0 | 6695 | { |
dee91e82 | 6696 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 6697 | |
95554aad | 6698 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 6699 | |
ae038cb0 DJ |
6700 | /* Check if comp unit has_children. |
6701 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 6702 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 6703 | if (has_children) |
dee91e82 DE |
6704 | load_partial_dies (reader, info_ptr, 0); |
6705 | } | |
98bfdba5 | 6706 | |
dee91e82 DE |
6707 | /* Load the partial DIEs for a secondary CU into memory. |
6708 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 6709 | |
dee91e82 DE |
6710 | static void |
6711 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
6712 | { | |
f4dc4d17 DE |
6713 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6714 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
6715 | } |
6716 | ||
ae038cb0 | 6717 | static void |
36586728 TT |
6718 | read_comp_units_from_section (struct objfile *objfile, |
6719 | struct dwarf2_section_info *section, | |
6720 | unsigned int is_dwz, | |
6721 | int *n_allocated, | |
6722 | int *n_comp_units, | |
6723 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 6724 | { |
d521ce57 | 6725 | const gdb_byte *info_ptr; |
a32a8923 | 6726 | bfd *abfd = get_section_bfd_owner (section); |
be391dca | 6727 | |
b4f54984 | 6728 | if (dwarf_read_debug) |
bf6af496 | 6729 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
6730 | get_section_name (section), |
6731 | get_section_file_name (section)); | |
bf6af496 | 6732 | |
36586728 | 6733 | dwarf2_read_section (objfile, section); |
ae038cb0 | 6734 | |
36586728 | 6735 | info_ptr = section->buffer; |
6e70227d | 6736 | |
36586728 | 6737 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 6738 | { |
c764a876 | 6739 | unsigned int length, initial_length_size; |
ae038cb0 | 6740 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 6741 | |
9c541725 | 6742 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 DJ |
6743 | |
6744 | /* Read just enough information to find out where the next | |
6745 | compilation unit is. */ | |
36586728 | 6746 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
6747 | |
6748 | /* Save the compilation unit for later lookup. */ | |
8d749320 | 6749 | this_cu = XOBNEW (&objfile->objfile_obstack, struct dwarf2_per_cu_data); |
ae038cb0 | 6750 | memset (this_cu, 0, sizeof (*this_cu)); |
9c541725 | 6751 | this_cu->sect_off = sect_off; |
c764a876 | 6752 | this_cu->length = length + initial_length_size; |
36586728 | 6753 | this_cu->is_dwz = is_dwz; |
9291a0cd | 6754 | this_cu->objfile = objfile; |
8a0459fd | 6755 | this_cu->section = section; |
ae038cb0 | 6756 | |
36586728 | 6757 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 6758 | { |
36586728 | 6759 | *n_allocated *= 2; |
224c3ddb SM |
6760 | *all_comp_units = XRESIZEVEC (struct dwarf2_per_cu_data *, |
6761 | *all_comp_units, *n_allocated); | |
ae038cb0 | 6762 | } |
36586728 TT |
6763 | (*all_comp_units)[*n_comp_units] = this_cu; |
6764 | ++*n_comp_units; | |
ae038cb0 DJ |
6765 | |
6766 | info_ptr = info_ptr + this_cu->length; | |
6767 | } | |
36586728 TT |
6768 | } |
6769 | ||
6770 | /* Create a list of all compilation units in OBJFILE. | |
6771 | This is only done for -readnow and building partial symtabs. */ | |
6772 | ||
6773 | static void | |
6774 | create_all_comp_units (struct objfile *objfile) | |
6775 | { | |
6776 | int n_allocated; | |
6777 | int n_comp_units; | |
6778 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 6779 | struct dwz_file *dwz; |
36586728 TT |
6780 | |
6781 | n_comp_units = 0; | |
6782 | n_allocated = 10; | |
8d749320 | 6783 | all_comp_units = XNEWVEC (struct dwarf2_per_cu_data *, n_allocated); |
36586728 TT |
6784 | |
6785 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
6786 | &n_allocated, &n_comp_units, &all_comp_units); | |
6787 | ||
4db1a1dc TT |
6788 | dwz = dwarf2_get_dwz_file (); |
6789 | if (dwz != NULL) | |
6790 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
6791 | &n_allocated, &n_comp_units, | |
6792 | &all_comp_units); | |
ae038cb0 | 6793 | |
8d749320 SM |
6794 | dwarf2_per_objfile->all_comp_units = XOBNEWVEC (&objfile->objfile_obstack, |
6795 | struct dwarf2_per_cu_data *, | |
6796 | n_comp_units); | |
ae038cb0 DJ |
6797 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, |
6798 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6799 | xfree (all_comp_units); | |
6800 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
6801 | } |
6802 | ||
5734ee8b | 6803 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 6804 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 6805 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
6806 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
6807 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 6808 | |
72bf9492 DJ |
6809 | static void |
6810 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
6811 | CORE_ADDR *highpc, int set_addrmap, |
6812 | struct dwarf2_cu *cu) | |
c906108c | 6813 | { |
72bf9492 | 6814 | struct partial_die_info *pdi; |
c906108c | 6815 | |
91c24f0a DC |
6816 | /* Now, march along the PDI's, descending into ones which have |
6817 | interesting children but skipping the children of the other ones, | |
6818 | until we reach the end of the compilation unit. */ | |
c906108c | 6819 | |
72bf9492 | 6820 | pdi = first_die; |
91c24f0a | 6821 | |
72bf9492 DJ |
6822 | while (pdi != NULL) |
6823 | { | |
6824 | fixup_partial_die (pdi, cu); | |
c906108c | 6825 | |
f55ee35c | 6826 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
6827 | children, so we need to look at them. Ditto for anonymous |
6828 | enums. */ | |
933c6fe4 | 6829 | |
72bf9492 | 6830 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
6831 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
6832 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 6833 | { |
72bf9492 | 6834 | switch (pdi->tag) |
c906108c SS |
6835 | { |
6836 | case DW_TAG_subprogram: | |
cdc07690 | 6837 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 6838 | break; |
72929c62 | 6839 | case DW_TAG_constant: |
c906108c SS |
6840 | case DW_TAG_variable: |
6841 | case DW_TAG_typedef: | |
91c24f0a | 6842 | case DW_TAG_union_type: |
72bf9492 | 6843 | if (!pdi->is_declaration) |
63d06c5c | 6844 | { |
72bf9492 | 6845 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
6846 | } |
6847 | break; | |
c906108c | 6848 | case DW_TAG_class_type: |
680b30c7 | 6849 | case DW_TAG_interface_type: |
c906108c | 6850 | case DW_TAG_structure_type: |
72bf9492 | 6851 | if (!pdi->is_declaration) |
c906108c | 6852 | { |
72bf9492 | 6853 | add_partial_symbol (pdi, cu); |
c906108c | 6854 | } |
e98c9e7c TT |
6855 | if (cu->language == language_rust && pdi->has_children) |
6856 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
6857 | set_addrmap, cu); | |
c906108c | 6858 | break; |
91c24f0a | 6859 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
6860 | if (!pdi->is_declaration) |
6861 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
6862 | break; |
6863 | case DW_TAG_base_type: | |
a02abb62 | 6864 | case DW_TAG_subrange_type: |
c906108c | 6865 | /* File scope base type definitions are added to the partial |
c5aa993b | 6866 | symbol table. */ |
72bf9492 | 6867 | add_partial_symbol (pdi, cu); |
c906108c | 6868 | break; |
d9fa45fe | 6869 | case DW_TAG_namespace: |
cdc07690 | 6870 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 6871 | break; |
5d7cb8df | 6872 | case DW_TAG_module: |
cdc07690 | 6873 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 6874 | break; |
95554aad TT |
6875 | case DW_TAG_imported_unit: |
6876 | { | |
6877 | struct dwarf2_per_cu_data *per_cu; | |
6878 | ||
f4dc4d17 DE |
6879 | /* For now we don't handle imported units in type units. */ |
6880 | if (cu->per_cu->is_debug_types) | |
6881 | { | |
6882 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6883 | " supported in type units [in module %s]"), | |
4262abfb | 6884 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
6885 | } |
6886 | ||
9c541725 | 6887 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.sect_off, |
36586728 | 6888 | pdi->is_dwz, |
95554aad TT |
6889 | cu->objfile); |
6890 | ||
6891 | /* Go read the partial unit, if needed. */ | |
6892 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 6893 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 6894 | |
f4dc4d17 | 6895 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 6896 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
6897 | } |
6898 | break; | |
74921315 KS |
6899 | case DW_TAG_imported_declaration: |
6900 | add_partial_symbol (pdi, cu); | |
6901 | break; | |
c906108c SS |
6902 | default: |
6903 | break; | |
6904 | } | |
6905 | } | |
6906 | ||
72bf9492 DJ |
6907 | /* If the die has a sibling, skip to the sibling. */ |
6908 | ||
6909 | pdi = pdi->die_sibling; | |
6910 | } | |
6911 | } | |
6912 | ||
6913 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 6914 | |
72bf9492 | 6915 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 6916 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
6917 | Enumerators are an exception; they use the scope of their parent |
6918 | enumeration type, i.e. the name of the enumeration type is not | |
6919 | prepended to the enumerator. | |
91c24f0a | 6920 | |
72bf9492 DJ |
6921 | There are two complexities. One is DW_AT_specification; in this |
6922 | case "parent" means the parent of the target of the specification, | |
6923 | instead of the direct parent of the DIE. The other is compilers | |
6924 | which do not emit DW_TAG_namespace; in this case we try to guess | |
6925 | the fully qualified name of structure types from their members' | |
6926 | linkage names. This must be done using the DIE's children rather | |
6927 | than the children of any DW_AT_specification target. We only need | |
6928 | to do this for structures at the top level, i.e. if the target of | |
6929 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
6930 | have a parent. */ | |
6931 | ||
6932 | /* Compute the scope prefix associated with PDI's parent, in | |
6933 | compilation unit CU. The result will be allocated on CU's | |
6934 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
6935 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 6936 | static const char * |
72bf9492 DJ |
6937 | partial_die_parent_scope (struct partial_die_info *pdi, |
6938 | struct dwarf2_cu *cu) | |
6939 | { | |
15d034d0 | 6940 | const char *grandparent_scope; |
72bf9492 | 6941 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 6942 | |
72bf9492 DJ |
6943 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
6944 | then this means the parent of the specification DIE. */ | |
6945 | ||
6946 | real_pdi = pdi; | |
72bf9492 | 6947 | while (real_pdi->has_specification) |
36586728 TT |
6948 | real_pdi = find_partial_die (real_pdi->spec_offset, |
6949 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
6950 | |
6951 | parent = real_pdi->die_parent; | |
6952 | if (parent == NULL) | |
6953 | return NULL; | |
6954 | ||
6955 | if (parent->scope_set) | |
6956 | return parent->scope; | |
6957 | ||
6958 | fixup_partial_die (parent, cu); | |
6959 | ||
10b3939b | 6960 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 6961 | |
acebe513 UW |
6962 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
6963 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
6964 | Work around this problem here. */ | |
6965 | if (cu->language == language_cplus | |
6e70227d | 6966 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
6967 | && strcmp (parent->name, "::") == 0 |
6968 | && grandparent_scope == NULL) | |
6969 | { | |
6970 | parent->scope = NULL; | |
6971 | parent->scope_set = 1; | |
6972 | return NULL; | |
6973 | } | |
6974 | ||
9c6c53f7 SA |
6975 | if (pdi->tag == DW_TAG_enumerator) |
6976 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
6977 | parent->scope = grandparent_scope; | |
6978 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 6979 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
6980 | || parent->tag == DW_TAG_structure_type |
6981 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 6982 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
6983 | || parent->tag == DW_TAG_union_type |
6984 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
6985 | { |
6986 | if (grandparent_scope == NULL) | |
6987 | parent->scope = parent->name; | |
6988 | else | |
3e43a32a MS |
6989 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
6990 | grandparent_scope, | |
f55ee35c | 6991 | parent->name, 0, cu); |
72bf9492 | 6992 | } |
72bf9492 DJ |
6993 | else |
6994 | { | |
6995 | /* FIXME drow/2004-04-01: What should we be doing with | |
6996 | function-local names? For partial symbols, we should probably be | |
6997 | ignoring them. */ | |
6998 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6999 | _("unhandled containing DIE tag %d for DIE at %d"), |
9c541725 | 7000 | parent->tag, to_underlying (pdi->sect_off)); |
72bf9492 | 7001 | parent->scope = grandparent_scope; |
c906108c SS |
7002 | } |
7003 | ||
72bf9492 DJ |
7004 | parent->scope_set = 1; |
7005 | return parent->scope; | |
7006 | } | |
7007 | ||
7008 | /* Return the fully scoped name associated with PDI, from compilation unit | |
7009 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 7010 | |
72bf9492 DJ |
7011 | static char * |
7012 | partial_die_full_name (struct partial_die_info *pdi, | |
7013 | struct dwarf2_cu *cu) | |
7014 | { | |
15d034d0 | 7015 | const char *parent_scope; |
72bf9492 | 7016 | |
98bfdba5 PA |
7017 | /* If this is a template instantiation, we can not work out the |
7018 | template arguments from partial DIEs. So, unfortunately, we have | |
7019 | to go through the full DIEs. At least any work we do building | |
7020 | types here will be reused if full symbols are loaded later. */ | |
7021 | if (pdi->has_template_arguments) | |
7022 | { | |
7023 | fixup_partial_die (pdi, cu); | |
7024 | ||
7025 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
7026 | { | |
7027 | struct die_info *die; | |
7028 | struct attribute attr; | |
7029 | struct dwarf2_cu *ref_cu = cu; | |
7030 | ||
b64f50a1 | 7031 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 7032 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 7033 | attr.form = DW_FORM_ref_addr; |
9c541725 | 7034 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
7035 | die = follow_die_ref (NULL, &attr, &ref_cu); |
7036 | ||
7037 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
7038 | } | |
7039 | } | |
7040 | ||
72bf9492 DJ |
7041 | parent_scope = partial_die_parent_scope (pdi, cu); |
7042 | if (parent_scope == NULL) | |
7043 | return NULL; | |
7044 | else | |
f55ee35c | 7045 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
7046 | } |
7047 | ||
7048 | static void | |
72bf9492 | 7049 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 7050 | { |
e7c27a73 | 7051 | struct objfile *objfile = cu->objfile; |
3e29f34a | 7052 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 7053 | CORE_ADDR addr = 0; |
15d034d0 | 7054 | const char *actual_name = NULL; |
e142c38c | 7055 | CORE_ADDR baseaddr; |
15d034d0 | 7056 | char *built_actual_name; |
e142c38c DJ |
7057 | |
7058 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 7059 | |
15d034d0 TT |
7060 | built_actual_name = partial_die_full_name (pdi, cu); |
7061 | if (built_actual_name != NULL) | |
7062 | actual_name = built_actual_name; | |
63d06c5c | 7063 | |
72bf9492 DJ |
7064 | if (actual_name == NULL) |
7065 | actual_name = pdi->name; | |
7066 | ||
c906108c SS |
7067 | switch (pdi->tag) |
7068 | { | |
7069 | case DW_TAG_subprogram: | |
3e29f34a | 7070 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 7071 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 7072 | { |
2cfa0c8d JB |
7073 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
7074 | of the global scope. But in Ada, we want to be able to access | |
7075 | nested procedures globally. So all Ada subprograms are stored | |
7076 | in the global scope. */ | |
f47fb265 | 7077 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7078 | built_actual_name != NULL, |
f47fb265 MS |
7079 | VAR_DOMAIN, LOC_BLOCK, |
7080 | &objfile->global_psymbols, | |
1762568f | 7081 | addr, cu->language, objfile); |
c906108c SS |
7082 | } |
7083 | else | |
7084 | { | |
f47fb265 | 7085 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7086 | built_actual_name != NULL, |
f47fb265 MS |
7087 | VAR_DOMAIN, LOC_BLOCK, |
7088 | &objfile->static_psymbols, | |
1762568f | 7089 | addr, cu->language, objfile); |
c906108c | 7090 | } |
0c1b455e TT |
7091 | |
7092 | if (pdi->main_subprogram && actual_name != NULL) | |
7093 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 7094 | break; |
72929c62 JB |
7095 | case DW_TAG_constant: |
7096 | { | |
7097 | struct psymbol_allocation_list *list; | |
7098 | ||
7099 | if (pdi->is_external) | |
7100 | list = &objfile->global_psymbols; | |
7101 | else | |
7102 | list = &objfile->static_psymbols; | |
f47fb265 | 7103 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7104 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
1762568f | 7105 | list, 0, cu->language, objfile); |
72929c62 JB |
7106 | } |
7107 | break; | |
c906108c | 7108 | case DW_TAG_variable: |
95554aad TT |
7109 | if (pdi->d.locdesc) |
7110 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 7111 | |
95554aad | 7112 | if (pdi->d.locdesc |
caac4577 JG |
7113 | && addr == 0 |
7114 | && !dwarf2_per_objfile->has_section_at_zero) | |
7115 | { | |
7116 | /* A global or static variable may also have been stripped | |
7117 | out by the linker if unused, in which case its address | |
7118 | will be nullified; do not add such variables into partial | |
7119 | symbol table then. */ | |
7120 | } | |
7121 | else if (pdi->is_external) | |
c906108c SS |
7122 | { |
7123 | /* Global Variable. | |
7124 | Don't enter into the minimal symbol tables as there is | |
7125 | a minimal symbol table entry from the ELF symbols already. | |
7126 | Enter into partial symbol table if it has a location | |
7127 | descriptor or a type. | |
7128 | If the location descriptor is missing, new_symbol will create | |
7129 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
7130 | be determined from the minimal symbol table whenever the variable | |
7131 | is referenced. | |
7132 | The address for the partial symbol table entry is not | |
7133 | used by GDB, but it comes in handy for debugging partial symbol | |
7134 | table building. */ | |
7135 | ||
95554aad | 7136 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 7137 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7138 | built_actual_name != NULL, |
f47fb265 MS |
7139 | VAR_DOMAIN, LOC_STATIC, |
7140 | &objfile->global_psymbols, | |
1762568f | 7141 | addr + baseaddr, |
f47fb265 | 7142 | cu->language, objfile); |
c906108c SS |
7143 | } |
7144 | else | |
7145 | { | |
ff908ebf AW |
7146 | int has_loc = pdi->d.locdesc != NULL; |
7147 | ||
7148 | /* Static Variable. Skip symbols whose value we cannot know (those | |
7149 | without location descriptors or constant values). */ | |
7150 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 7151 | { |
15d034d0 | 7152 | xfree (built_actual_name); |
decbce07 MS |
7153 | return; |
7154 | } | |
ff908ebf | 7155 | |
f47fb265 | 7156 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7157 | built_actual_name != NULL, |
f47fb265 MS |
7158 | VAR_DOMAIN, LOC_STATIC, |
7159 | &objfile->static_psymbols, | |
ff908ebf | 7160 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, |
f47fb265 | 7161 | cu->language, objfile); |
c906108c SS |
7162 | } |
7163 | break; | |
7164 | case DW_TAG_typedef: | |
7165 | case DW_TAG_base_type: | |
a02abb62 | 7166 | case DW_TAG_subrange_type: |
38d518c9 | 7167 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7168 | built_actual_name != NULL, |
176620f1 | 7169 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 7170 | &objfile->static_psymbols, |
1762568f | 7171 | 0, cu->language, objfile); |
c906108c | 7172 | break; |
74921315 | 7173 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
7174 | case DW_TAG_namespace: |
7175 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 7176 | built_actual_name != NULL, |
72bf9492 DJ |
7177 | VAR_DOMAIN, LOC_TYPEDEF, |
7178 | &objfile->global_psymbols, | |
1762568f | 7179 | 0, cu->language, objfile); |
72bf9492 | 7180 | break; |
530e8392 KB |
7181 | case DW_TAG_module: |
7182 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
7183 | built_actual_name != NULL, | |
7184 | MODULE_DOMAIN, LOC_TYPEDEF, | |
7185 | &objfile->global_psymbols, | |
1762568f | 7186 | 0, cu->language, objfile); |
530e8392 | 7187 | break; |
c906108c | 7188 | case DW_TAG_class_type: |
680b30c7 | 7189 | case DW_TAG_interface_type: |
c906108c SS |
7190 | case DW_TAG_structure_type: |
7191 | case DW_TAG_union_type: | |
7192 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
7193 | /* Skip external references. The DWARF standard says in the section |
7194 | about "Structure, Union, and Class Type Entries": "An incomplete | |
7195 | structure, union or class type is represented by a structure, | |
7196 | union or class entry that does not have a byte size attribute | |
7197 | and that has a DW_AT_declaration attribute." */ | |
7198 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 7199 | { |
15d034d0 | 7200 | xfree (built_actual_name); |
decbce07 MS |
7201 | return; |
7202 | } | |
fa4028e9 | 7203 | |
63d06c5c DC |
7204 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
7205 | static vs. global. */ | |
38d518c9 | 7206 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7207 | built_actual_name != NULL, |
176620f1 | 7208 | STRUCT_DOMAIN, LOC_TYPEDEF, |
9c37b5ae | 7209 | cu->language == language_cplus |
63d06c5c DC |
7210 | ? &objfile->global_psymbols |
7211 | : &objfile->static_psymbols, | |
1762568f | 7212 | 0, cu->language, objfile); |
c906108c | 7213 | |
c906108c SS |
7214 | break; |
7215 | case DW_TAG_enumerator: | |
38d518c9 | 7216 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 7217 | built_actual_name != NULL, |
176620f1 | 7218 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 7219 | cu->language == language_cplus |
f6fe98ef DJ |
7220 | ? &objfile->global_psymbols |
7221 | : &objfile->static_psymbols, | |
1762568f | 7222 | 0, cu->language, objfile); |
c906108c SS |
7223 | break; |
7224 | default: | |
7225 | break; | |
7226 | } | |
5c4e30ca | 7227 | |
15d034d0 | 7228 | xfree (built_actual_name); |
c906108c SS |
7229 | } |
7230 | ||
5c4e30ca DC |
7231 | /* Read a partial die corresponding to a namespace; also, add a symbol |
7232 | corresponding to that namespace to the symbol table. NAMESPACE is | |
7233 | the name of the enclosing namespace. */ | |
91c24f0a | 7234 | |
72bf9492 DJ |
7235 | static void |
7236 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 7237 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 7238 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 7239 | { |
72bf9492 | 7240 | /* Add a symbol for the namespace. */ |
e7c27a73 | 7241 | |
72bf9492 | 7242 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
7243 | |
7244 | /* Now scan partial symbols in that namespace. */ | |
7245 | ||
91c24f0a | 7246 | if (pdi->has_children) |
cdc07690 | 7247 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
7248 | } |
7249 | ||
5d7cb8df JK |
7250 | /* Read a partial die corresponding to a Fortran module. */ |
7251 | ||
7252 | static void | |
7253 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 7254 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 7255 | { |
530e8392 KB |
7256 | /* Add a symbol for the namespace. */ |
7257 | ||
7258 | add_partial_symbol (pdi, cu); | |
7259 | ||
f55ee35c | 7260 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
7261 | |
7262 | if (pdi->has_children) | |
cdc07690 | 7263 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
7264 | } |
7265 | ||
bc30ff58 JB |
7266 | /* Read a partial die corresponding to a subprogram and create a partial |
7267 | symbol for that subprogram. When the CU language allows it, this | |
7268 | routine also defines a partial symbol for each nested subprogram | |
cdc07690 | 7269 | that this subprogram contains. If SET_ADDRMAP is true, record the |
428fc5fc YQ |
7270 | covered ranges in the addrmap. Set *LOWPC and *HIGHPC to the lowest |
7271 | and highest PC values found in PDI. | |
6e70227d | 7272 | |
cdc07690 YQ |
7273 | PDI may also be a lexical block, in which case we simply search |
7274 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
7275 | Again, this is only performed when the CU language allows this |
7276 | type of definitions. */ | |
7277 | ||
7278 | static void | |
7279 | add_partial_subprogram (struct partial_die_info *pdi, | |
7280 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 7281 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 JB |
7282 | { |
7283 | if (pdi->tag == DW_TAG_subprogram) | |
7284 | { | |
7285 | if (pdi->has_pc_info) | |
7286 | { | |
7287 | if (pdi->lowpc < *lowpc) | |
7288 | *lowpc = pdi->lowpc; | |
7289 | if (pdi->highpc > *highpc) | |
7290 | *highpc = pdi->highpc; | |
cdc07690 | 7291 | if (set_addrmap) |
5734ee8b | 7292 | { |
5734ee8b | 7293 | struct objfile *objfile = cu->objfile; |
3e29f34a MR |
7294 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
7295 | CORE_ADDR baseaddr; | |
7296 | CORE_ADDR highpc; | |
7297 | CORE_ADDR lowpc; | |
5734ee8b DJ |
7298 | |
7299 | baseaddr = ANOFFSET (objfile->section_offsets, | |
7300 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
7301 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
7302 | pdi->lowpc + baseaddr); | |
7303 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
7304 | pdi->highpc + baseaddr); | |
7305 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 7306 | cu->per_cu->v.psymtab); |
5734ee8b | 7307 | } |
481860b3 GB |
7308 | } |
7309 | ||
7310 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
7311 | { | |
bc30ff58 | 7312 | if (!pdi->is_declaration) |
e8d05480 JB |
7313 | /* Ignore subprogram DIEs that do not have a name, they are |
7314 | illegal. Do not emit a complaint at this point, we will | |
7315 | do so when we convert this psymtab into a symtab. */ | |
7316 | if (pdi->name) | |
7317 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
7318 | } |
7319 | } | |
6e70227d | 7320 | |
bc30ff58 JB |
7321 | if (! pdi->has_children) |
7322 | return; | |
7323 | ||
7324 | if (cu->language == language_ada) | |
7325 | { | |
7326 | pdi = pdi->die_child; | |
7327 | while (pdi != NULL) | |
7328 | { | |
7329 | fixup_partial_die (pdi, cu); | |
7330 | if (pdi->tag == DW_TAG_subprogram | |
7331 | || pdi->tag == DW_TAG_lexical_block) | |
cdc07690 | 7332 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
7333 | pdi = pdi->die_sibling; |
7334 | } | |
7335 | } | |
7336 | } | |
7337 | ||
91c24f0a DC |
7338 | /* Read a partial die corresponding to an enumeration type. */ |
7339 | ||
72bf9492 DJ |
7340 | static void |
7341 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
7342 | struct dwarf2_cu *cu) | |
91c24f0a | 7343 | { |
72bf9492 | 7344 | struct partial_die_info *pdi; |
91c24f0a DC |
7345 | |
7346 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
7347 | add_partial_symbol (enum_pdi, cu); |
7348 | ||
7349 | pdi = enum_pdi->die_child; | |
7350 | while (pdi) | |
91c24f0a | 7351 | { |
72bf9492 | 7352 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 7353 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 7354 | else |
72bf9492 DJ |
7355 | add_partial_symbol (pdi, cu); |
7356 | pdi = pdi->die_sibling; | |
91c24f0a | 7357 | } |
91c24f0a DC |
7358 | } |
7359 | ||
6caca83c CC |
7360 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
7361 | ||
7362 | static unsigned int | |
d521ce57 | 7363 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
7364 | { |
7365 | unsigned int bytes_read; | |
7366 | ||
7367 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7368 | } | |
7369 | ||
4bb7a0a7 DJ |
7370 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
7371 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
7372 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
7373 | the initial number. */ | |
7374 | ||
7375 | static struct abbrev_info * | |
d521ce57 | 7376 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 7377 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
7378 | { |
7379 | bfd *abfd = cu->objfile->obfd; | |
7380 | unsigned int abbrev_number; | |
7381 | struct abbrev_info *abbrev; | |
7382 | ||
7383 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
7384 | ||
7385 | if (abbrev_number == 0) | |
7386 | return NULL; | |
7387 | ||
433df2d4 | 7388 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
7389 | if (!abbrev) |
7390 | { | |
422b9917 DE |
7391 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
7392 | " at offset 0x%x [in module %s]"), | |
7393 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", | |
9c541725 | 7394 | to_underlying (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
7395 | } |
7396 | ||
7397 | return abbrev; | |
7398 | } | |
7399 | ||
93311388 DE |
7400 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7401 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
7402 | DIE. Any children of the skipped DIEs will also be skipped. */ |
7403 | ||
d521ce57 TT |
7404 | static const gdb_byte * |
7405 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 7406 | { |
dee91e82 | 7407 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
7408 | struct abbrev_info *abbrev; |
7409 | unsigned int bytes_read; | |
7410 | ||
7411 | while (1) | |
7412 | { | |
7413 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
7414 | if (abbrev == NULL) | |
7415 | return info_ptr + bytes_read; | |
7416 | else | |
dee91e82 | 7417 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
7418 | } |
7419 | } | |
7420 | ||
93311388 DE |
7421 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7422 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
7423 | abbrev corresponding to that skipped uleb128 should be passed in |
7424 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
7425 | children. */ | |
7426 | ||
d521ce57 TT |
7427 | static const gdb_byte * |
7428 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 7429 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
7430 | { |
7431 | unsigned int bytes_read; | |
7432 | struct attribute attr; | |
dee91e82 DE |
7433 | bfd *abfd = reader->abfd; |
7434 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 7435 | const gdb_byte *buffer = reader->buffer; |
f664829e | 7436 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
7437 | unsigned int form, i; |
7438 | ||
7439 | for (i = 0; i < abbrev->num_attrs; i++) | |
7440 | { | |
7441 | /* The only abbrev we care about is DW_AT_sibling. */ | |
7442 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
7443 | { | |
dee91e82 | 7444 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 7445 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
7446 | complaint (&symfile_complaints, |
7447 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 7448 | else |
b9502d3f | 7449 | { |
9c541725 PA |
7450 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
7451 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
7452 | |
7453 | if (sibling_ptr < info_ptr) | |
7454 | complaint (&symfile_complaints, | |
7455 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
7456 | else if (sibling_ptr > reader->buffer_end) |
7457 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
7458 | else |
7459 | return sibling_ptr; | |
7460 | } | |
4bb7a0a7 DJ |
7461 | } |
7462 | ||
7463 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
7464 | form = abbrev->attrs[i].form; | |
7465 | skip_attribute: | |
7466 | switch (form) | |
7467 | { | |
4bb7a0a7 | 7468 | case DW_FORM_ref_addr: |
ae411497 TT |
7469 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
7470 | and later it is offset sized. */ | |
7471 | if (cu->header.version == 2) | |
7472 | info_ptr += cu->header.addr_size; | |
7473 | else | |
7474 | info_ptr += cu->header.offset_size; | |
7475 | break; | |
36586728 TT |
7476 | case DW_FORM_GNU_ref_alt: |
7477 | info_ptr += cu->header.offset_size; | |
7478 | break; | |
ae411497 | 7479 | case DW_FORM_addr: |
4bb7a0a7 DJ |
7480 | info_ptr += cu->header.addr_size; |
7481 | break; | |
7482 | case DW_FORM_data1: | |
7483 | case DW_FORM_ref1: | |
7484 | case DW_FORM_flag: | |
7485 | info_ptr += 1; | |
7486 | break; | |
2dc7f7b3 | 7487 | case DW_FORM_flag_present: |
43988095 | 7488 | case DW_FORM_implicit_const: |
2dc7f7b3 | 7489 | break; |
4bb7a0a7 DJ |
7490 | case DW_FORM_data2: |
7491 | case DW_FORM_ref2: | |
7492 | info_ptr += 2; | |
7493 | break; | |
7494 | case DW_FORM_data4: | |
7495 | case DW_FORM_ref4: | |
7496 | info_ptr += 4; | |
7497 | break; | |
7498 | case DW_FORM_data8: | |
7499 | case DW_FORM_ref8: | |
55f1336d | 7500 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
7501 | info_ptr += 8; |
7502 | break; | |
0224619f JK |
7503 | case DW_FORM_data16: |
7504 | info_ptr += 16; | |
7505 | break; | |
4bb7a0a7 | 7506 | case DW_FORM_string: |
9b1c24c8 | 7507 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
7508 | info_ptr += bytes_read; |
7509 | break; | |
2dc7f7b3 | 7510 | case DW_FORM_sec_offset: |
4bb7a0a7 | 7511 | case DW_FORM_strp: |
36586728 | 7512 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
7513 | info_ptr += cu->header.offset_size; |
7514 | break; | |
2dc7f7b3 | 7515 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
7516 | case DW_FORM_block: |
7517 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7518 | info_ptr += bytes_read; | |
7519 | break; | |
7520 | case DW_FORM_block1: | |
7521 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
7522 | break; | |
7523 | case DW_FORM_block2: | |
7524 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
7525 | break; | |
7526 | case DW_FORM_block4: | |
7527 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
7528 | break; | |
7529 | case DW_FORM_sdata: | |
7530 | case DW_FORM_udata: | |
7531 | case DW_FORM_ref_udata: | |
3019eac3 DE |
7532 | case DW_FORM_GNU_addr_index: |
7533 | case DW_FORM_GNU_str_index: | |
d521ce57 | 7534 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
7535 | break; |
7536 | case DW_FORM_indirect: | |
7537 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7538 | info_ptr += bytes_read; | |
7539 | /* We need to continue parsing from here, so just go back to | |
7540 | the top. */ | |
7541 | goto skip_attribute; | |
7542 | ||
7543 | default: | |
3e43a32a MS |
7544 | error (_("Dwarf Error: Cannot handle %s " |
7545 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
7546 | dwarf_form_name (form), |
7547 | bfd_get_filename (abfd)); | |
7548 | } | |
7549 | } | |
7550 | ||
7551 | if (abbrev->has_children) | |
dee91e82 | 7552 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
7553 | else |
7554 | return info_ptr; | |
7555 | } | |
7556 | ||
93311388 | 7557 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 7558 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 7559 | |
d521ce57 | 7560 | static const gdb_byte * |
dee91e82 DE |
7561 | locate_pdi_sibling (const struct die_reader_specs *reader, |
7562 | struct partial_die_info *orig_pdi, | |
d521ce57 | 7563 | const gdb_byte *info_ptr) |
91c24f0a DC |
7564 | { |
7565 | /* Do we know the sibling already? */ | |
72bf9492 | 7566 | |
91c24f0a DC |
7567 | if (orig_pdi->sibling) |
7568 | return orig_pdi->sibling; | |
7569 | ||
7570 | /* Are there any children to deal with? */ | |
7571 | ||
7572 | if (!orig_pdi->has_children) | |
7573 | return info_ptr; | |
7574 | ||
4bb7a0a7 | 7575 | /* Skip the children the long way. */ |
91c24f0a | 7576 | |
dee91e82 | 7577 | return skip_children (reader, info_ptr); |
91c24f0a DC |
7578 | } |
7579 | ||
257e7a09 | 7580 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 7581 | not NULL. */ |
c906108c SS |
7582 | |
7583 | static void | |
257e7a09 YQ |
7584 | dwarf2_read_symtab (struct partial_symtab *self, |
7585 | struct objfile *objfile) | |
c906108c | 7586 | { |
257e7a09 | 7587 | if (self->readin) |
c906108c | 7588 | { |
442e4d9c | 7589 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 7590 | self->filename); |
442e4d9c YQ |
7591 | } |
7592 | else | |
7593 | { | |
7594 | if (info_verbose) | |
c906108c | 7595 | { |
442e4d9c | 7596 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 7597 | self->filename); |
442e4d9c | 7598 | gdb_flush (gdb_stdout); |
c906108c | 7599 | } |
c906108c | 7600 | |
442e4d9c | 7601 | /* Restore our global data. */ |
9a3c8263 SM |
7602 | dwarf2_per_objfile |
7603 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
7604 | dwarf2_objfile_data_key); | |
10b3939b | 7605 | |
442e4d9c YQ |
7606 | /* If this psymtab is constructed from a debug-only objfile, the |
7607 | has_section_at_zero flag will not necessarily be correct. We | |
7608 | can get the correct value for this flag by looking at the data | |
7609 | associated with the (presumably stripped) associated objfile. */ | |
7610 | if (objfile->separate_debug_objfile_backlink) | |
7611 | { | |
7612 | struct dwarf2_per_objfile *dpo_backlink | |
9a3c8263 SM |
7613 | = ((struct dwarf2_per_objfile *) |
7614 | objfile_data (objfile->separate_debug_objfile_backlink, | |
7615 | dwarf2_objfile_data_key)); | |
9a619af0 | 7616 | |
442e4d9c YQ |
7617 | dwarf2_per_objfile->has_section_at_zero |
7618 | = dpo_backlink->has_section_at_zero; | |
7619 | } | |
b2ab525c | 7620 | |
442e4d9c | 7621 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 7622 | |
257e7a09 | 7623 | psymtab_to_symtab_1 (self); |
c906108c | 7624 | |
442e4d9c YQ |
7625 | /* Finish up the debug error message. */ |
7626 | if (info_verbose) | |
7627 | printf_filtered (_("done.\n")); | |
c906108c | 7628 | } |
95554aad TT |
7629 | |
7630 | process_cu_includes (); | |
c906108c | 7631 | } |
9cdd5dbd DE |
7632 | \f |
7633 | /* Reading in full CUs. */ | |
c906108c | 7634 | |
10b3939b DJ |
7635 | /* Add PER_CU to the queue. */ |
7636 | ||
7637 | static void | |
95554aad TT |
7638 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7639 | enum language pretend_language) | |
10b3939b DJ |
7640 | { |
7641 | struct dwarf2_queue_item *item; | |
7642 | ||
7643 | per_cu->queued = 1; | |
8d749320 | 7644 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 7645 | item->per_cu = per_cu; |
95554aad | 7646 | item->pretend_language = pretend_language; |
10b3939b DJ |
7647 | item->next = NULL; |
7648 | ||
7649 | if (dwarf2_queue == NULL) | |
7650 | dwarf2_queue = item; | |
7651 | else | |
7652 | dwarf2_queue_tail->next = item; | |
7653 | ||
7654 | dwarf2_queue_tail = item; | |
7655 | } | |
7656 | ||
89e63ee4 DE |
7657 | /* If PER_CU is not yet queued, add it to the queue. |
7658 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
7659 | dependency. | |
0907af0c | 7660 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
7661 | meaning either PER_CU is already queued or it is already loaded. |
7662 | ||
7663 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
7664 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
7665 | |
7666 | static int | |
89e63ee4 | 7667 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
7668 | struct dwarf2_per_cu_data *per_cu, |
7669 | enum language pretend_language) | |
7670 | { | |
7671 | /* We may arrive here during partial symbol reading, if we need full | |
7672 | DIEs to process an unusual case (e.g. template arguments). Do | |
7673 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
7674 | if (dwarf2_per_objfile->reading_partial_symbols) | |
7675 | { | |
7676 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
7677 | return 1; | |
7678 | return 0; | |
7679 | } | |
7680 | ||
7681 | /* Mark the dependence relation so that we don't flush PER_CU | |
7682 | too early. */ | |
89e63ee4 DE |
7683 | if (dependent_cu != NULL) |
7684 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
7685 | |
7686 | /* If it's already on the queue, we have nothing to do. */ | |
7687 | if (per_cu->queued) | |
7688 | return 0; | |
7689 | ||
7690 | /* If the compilation unit is already loaded, just mark it as | |
7691 | used. */ | |
7692 | if (per_cu->cu != NULL) | |
7693 | { | |
7694 | per_cu->cu->last_used = 0; | |
7695 | return 0; | |
7696 | } | |
7697 | ||
7698 | /* Add it to the queue. */ | |
7699 | queue_comp_unit (per_cu, pretend_language); | |
7700 | ||
7701 | return 1; | |
7702 | } | |
7703 | ||
10b3939b DJ |
7704 | /* Process the queue. */ |
7705 | ||
7706 | static void | |
a0f42c21 | 7707 | process_queue (void) |
10b3939b DJ |
7708 | { |
7709 | struct dwarf2_queue_item *item, *next_item; | |
7710 | ||
b4f54984 | 7711 | if (dwarf_read_debug) |
45cfd468 DE |
7712 | { |
7713 | fprintf_unfiltered (gdb_stdlog, | |
7714 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 7715 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
7716 | } |
7717 | ||
03dd20cc DJ |
7718 | /* The queue starts out with one item, but following a DIE reference |
7719 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
7720 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
7721 | { | |
cc12ce38 DE |
7722 | if ((dwarf2_per_objfile->using_index |
7723 | ? !item->per_cu->v.quick->compunit_symtab | |
7724 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
7725 | /* Skip dummy CUs. */ | |
7726 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
7727 | { |
7728 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 7729 | unsigned int debug_print_threshold; |
247f5c4f | 7730 | char buf[100]; |
f4dc4d17 | 7731 | |
247f5c4f | 7732 | if (per_cu->is_debug_types) |
f4dc4d17 | 7733 | { |
247f5c4f DE |
7734 | struct signatured_type *sig_type = |
7735 | (struct signatured_type *) per_cu; | |
7736 | ||
7737 | sprintf (buf, "TU %s at offset 0x%x", | |
73be47f5 | 7738 | hex_string (sig_type->signature), |
9c541725 | 7739 | to_underlying (per_cu->sect_off)); |
73be47f5 DE |
7740 | /* There can be 100s of TUs. |
7741 | Only print them in verbose mode. */ | |
7742 | debug_print_threshold = 2; | |
f4dc4d17 | 7743 | } |
247f5c4f | 7744 | else |
73be47f5 | 7745 | { |
9c541725 PA |
7746 | sprintf (buf, "CU at offset 0x%x", |
7747 | to_underlying (per_cu->sect_off)); | |
73be47f5 DE |
7748 | debug_print_threshold = 1; |
7749 | } | |
247f5c4f | 7750 | |
b4f54984 | 7751 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 7752 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
7753 | |
7754 | if (per_cu->is_debug_types) | |
7755 | process_full_type_unit (per_cu, item->pretend_language); | |
7756 | else | |
7757 | process_full_comp_unit (per_cu, item->pretend_language); | |
7758 | ||
b4f54984 | 7759 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 7760 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 7761 | } |
10b3939b DJ |
7762 | |
7763 | item->per_cu->queued = 0; | |
7764 | next_item = item->next; | |
7765 | xfree (item); | |
7766 | } | |
7767 | ||
7768 | dwarf2_queue_tail = NULL; | |
45cfd468 | 7769 | |
b4f54984 | 7770 | if (dwarf_read_debug) |
45cfd468 DE |
7771 | { |
7772 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 7773 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 7774 | } |
10b3939b DJ |
7775 | } |
7776 | ||
7777 | /* Free all allocated queue entries. This function only releases anything if | |
7778 | an error was thrown; if the queue was processed then it would have been | |
7779 | freed as we went along. */ | |
7780 | ||
7781 | static void | |
7782 | dwarf2_release_queue (void *dummy) | |
7783 | { | |
7784 | struct dwarf2_queue_item *item, *last; | |
7785 | ||
7786 | item = dwarf2_queue; | |
7787 | while (item) | |
7788 | { | |
7789 | /* Anything still marked queued is likely to be in an | |
7790 | inconsistent state, so discard it. */ | |
7791 | if (item->per_cu->queued) | |
7792 | { | |
7793 | if (item->per_cu->cu != NULL) | |
dee91e82 | 7794 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
7795 | item->per_cu->queued = 0; |
7796 | } | |
7797 | ||
7798 | last = item; | |
7799 | item = item->next; | |
7800 | xfree (last); | |
7801 | } | |
7802 | ||
7803 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
7804 | } | |
7805 | ||
7806 | /* Read in full symbols for PST, and anything it depends on. */ | |
7807 | ||
c906108c | 7808 | static void |
fba45db2 | 7809 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 7810 | { |
10b3939b | 7811 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
7812 | int i; |
7813 | ||
95554aad TT |
7814 | if (pst->readin) |
7815 | return; | |
7816 | ||
aaa75496 | 7817 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
7818 | if (!pst->dependencies[i]->readin |
7819 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
7820 | { |
7821 | /* Inform about additional files that need to be read in. */ | |
7822 | if (info_verbose) | |
7823 | { | |
a3f17187 | 7824 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
7825 | fputs_filtered (" ", gdb_stdout); |
7826 | wrap_here (""); | |
7827 | fputs_filtered ("and ", gdb_stdout); | |
7828 | wrap_here (""); | |
7829 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 7830 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
7831 | gdb_flush (gdb_stdout); |
7832 | } | |
7833 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
7834 | } | |
7835 | ||
9a3c8263 | 7836 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
7837 | |
7838 | if (per_cu == NULL) | |
aaa75496 JB |
7839 | { |
7840 | /* It's an include file, no symbols to read for it. | |
7841 | Everything is in the parent symtab. */ | |
7842 | pst->readin = 1; | |
7843 | return; | |
7844 | } | |
c906108c | 7845 | |
a0f42c21 | 7846 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
7847 | } |
7848 | ||
dee91e82 DE |
7849 | /* Trivial hash function for die_info: the hash value of a DIE |
7850 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 7851 | |
dee91e82 DE |
7852 | static hashval_t |
7853 | die_hash (const void *item) | |
10b3939b | 7854 | { |
9a3c8263 | 7855 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 7856 | |
9c541725 | 7857 | return to_underlying (die->sect_off); |
dee91e82 | 7858 | } |
63d06c5c | 7859 | |
dee91e82 DE |
7860 | /* Trivial comparison function for die_info structures: two DIEs |
7861 | are equal if they have the same offset. */ | |
98bfdba5 | 7862 | |
dee91e82 DE |
7863 | static int |
7864 | die_eq (const void *item_lhs, const void *item_rhs) | |
7865 | { | |
9a3c8263 SM |
7866 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
7867 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 7868 | |
9c541725 | 7869 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 7870 | } |
c906108c | 7871 | |
dee91e82 DE |
7872 | /* die_reader_func for load_full_comp_unit. |
7873 | This is identical to read_signatured_type_reader, | |
7874 | but is kept separate for now. */ | |
c906108c | 7875 | |
dee91e82 DE |
7876 | static void |
7877 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7878 | const gdb_byte *info_ptr, |
dee91e82 DE |
7879 | struct die_info *comp_unit_die, |
7880 | int has_children, | |
7881 | void *data) | |
7882 | { | |
7883 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 7884 | enum language *language_ptr = (enum language *) data; |
6caca83c | 7885 | |
dee91e82 DE |
7886 | gdb_assert (cu->die_hash == NULL); |
7887 | cu->die_hash = | |
7888 | htab_create_alloc_ex (cu->header.length / 12, | |
7889 | die_hash, | |
7890 | die_eq, | |
7891 | NULL, | |
7892 | &cu->comp_unit_obstack, | |
7893 | hashtab_obstack_allocate, | |
7894 | dummy_obstack_deallocate); | |
e142c38c | 7895 | |
dee91e82 DE |
7896 | if (has_children) |
7897 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
7898 | &info_ptr, comp_unit_die); | |
7899 | cu->dies = comp_unit_die; | |
7900 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
7901 | |
7902 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 7903 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 7904 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
7905 | or we won't be able to build types correctly. |
7906 | Similarly, if we do not read the producer, we can not apply | |
7907 | producer-specific interpretation. */ | |
95554aad | 7908 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 7909 | } |
10b3939b | 7910 | |
dee91e82 | 7911 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 7912 | |
dee91e82 | 7913 | static void |
95554aad TT |
7914 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
7915 | enum language pretend_language) | |
dee91e82 | 7916 | { |
3019eac3 | 7917 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 7918 | |
f4dc4d17 DE |
7919 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
7920 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
7921 | } |
7922 | ||
3da10d80 KS |
7923 | /* Add a DIE to the delayed physname list. */ |
7924 | ||
7925 | static void | |
7926 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
7927 | const char *name, struct die_info *die, | |
7928 | struct dwarf2_cu *cu) | |
7929 | { | |
7930 | struct delayed_method_info mi; | |
7931 | mi.type = type; | |
7932 | mi.fnfield_index = fnfield_index; | |
7933 | mi.index = index; | |
7934 | mi.name = name; | |
7935 | mi.die = die; | |
7936 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
7937 | } | |
7938 | ||
7939 | /* A cleanup for freeing the delayed method list. */ | |
7940 | ||
7941 | static void | |
7942 | free_delayed_list (void *ptr) | |
7943 | { | |
7944 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
7945 | if (cu->method_list != NULL) | |
7946 | { | |
7947 | VEC_free (delayed_method_info, cu->method_list); | |
7948 | cu->method_list = NULL; | |
7949 | } | |
7950 | } | |
7951 | ||
7952 | /* Compute the physnames of any methods on the CU's method list. | |
7953 | ||
7954 | The computation of method physnames is delayed in order to avoid the | |
7955 | (bad) condition that one of the method's formal parameters is of an as yet | |
7956 | incomplete type. */ | |
7957 | ||
7958 | static void | |
7959 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
7960 | { | |
7961 | int i; | |
7962 | struct delayed_method_info *mi; | |
7963 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
7964 | { | |
1d06ead6 | 7965 | const char *physname; |
3da10d80 KS |
7966 | struct fn_fieldlist *fn_flp |
7967 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 7968 | physname = dwarf2_physname (mi->name, mi->die, cu); |
005e54bb DE |
7969 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi->index) |
7970 | = physname ? physname : ""; | |
3da10d80 KS |
7971 | } |
7972 | } | |
7973 | ||
a766d390 DE |
7974 | /* Go objects should be embedded in a DW_TAG_module DIE, |
7975 | and it's not clear if/how imported objects will appear. | |
7976 | To keep Go support simple until that's worked out, | |
7977 | go back through what we've read and create something usable. | |
7978 | We could do this while processing each DIE, and feels kinda cleaner, | |
7979 | but that way is more invasive. | |
7980 | This is to, for example, allow the user to type "p var" or "b main" | |
7981 | without having to specify the package name, and allow lookups | |
7982 | of module.object to work in contexts that use the expression | |
7983 | parser. */ | |
7984 | ||
7985 | static void | |
7986 | fixup_go_packaging (struct dwarf2_cu *cu) | |
7987 | { | |
7988 | char *package_name = NULL; | |
7989 | struct pending *list; | |
7990 | int i; | |
7991 | ||
7992 | for (list = global_symbols; list != NULL; list = list->next) | |
7993 | { | |
7994 | for (i = 0; i < list->nsyms; ++i) | |
7995 | { | |
7996 | struct symbol *sym = list->symbol[i]; | |
7997 | ||
7998 | if (SYMBOL_LANGUAGE (sym) == language_go | |
7999 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
8000 | { | |
8001 | char *this_package_name = go_symbol_package_name (sym); | |
8002 | ||
8003 | if (this_package_name == NULL) | |
8004 | continue; | |
8005 | if (package_name == NULL) | |
8006 | package_name = this_package_name; | |
8007 | else | |
8008 | { | |
8009 | if (strcmp (package_name, this_package_name) != 0) | |
8010 | complaint (&symfile_complaints, | |
8011 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
8012 | (symbol_symtab (sym) != NULL |
8013 | ? symtab_to_filename_for_display | |
8014 | (symbol_symtab (sym)) | |
4262abfb | 8015 | : objfile_name (cu->objfile)), |
a766d390 DE |
8016 | this_package_name, package_name); |
8017 | xfree (this_package_name); | |
8018 | } | |
8019 | } | |
8020 | } | |
8021 | } | |
8022 | ||
8023 | if (package_name != NULL) | |
8024 | { | |
8025 | struct objfile *objfile = cu->objfile; | |
34a68019 | 8026 | const char *saved_package_name |
224c3ddb SM |
8027 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
8028 | package_name, | |
8029 | strlen (package_name)); | |
19f392bc UW |
8030 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
8031 | saved_package_name); | |
a766d390 DE |
8032 | struct symbol *sym; |
8033 | ||
8034 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
8035 | ||
e623cf5d | 8036 | sym = allocate_symbol (objfile); |
f85f34ed | 8037 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
8038 | SYMBOL_SET_NAMES (sym, saved_package_name, |
8039 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
8040 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
8041 | e.g., "main" finds the "main" module and not C's main(). */ | |
8042 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 8043 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
8044 | SYMBOL_TYPE (sym) = type; |
8045 | ||
8046 | add_symbol_to_list (sym, &global_symbols); | |
8047 | ||
8048 | xfree (package_name); | |
8049 | } | |
8050 | } | |
8051 | ||
95554aad TT |
8052 | /* Return the symtab for PER_CU. This works properly regardless of |
8053 | whether we're using the index or psymtabs. */ | |
8054 | ||
43f3e411 DE |
8055 | static struct compunit_symtab * |
8056 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad TT |
8057 | { |
8058 | return (dwarf2_per_objfile->using_index | |
43f3e411 DE |
8059 | ? per_cu->v.quick->compunit_symtab |
8060 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
8061 | } |
8062 | ||
8063 | /* A helper function for computing the list of all symbol tables | |
8064 | included by PER_CU. */ | |
8065 | ||
8066 | static void | |
43f3e411 | 8067 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 8068 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 8069 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 8070 | struct compunit_symtab *immediate_parent) |
95554aad TT |
8071 | { |
8072 | void **slot; | |
8073 | int ix; | |
43f3e411 | 8074 | struct compunit_symtab *cust; |
95554aad TT |
8075 | struct dwarf2_per_cu_data *iter; |
8076 | ||
8077 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
8078 | if (*slot != NULL) | |
8079 | { | |
8080 | /* This inclusion and its children have been processed. */ | |
8081 | return; | |
8082 | } | |
8083 | ||
8084 | *slot = per_cu; | |
8085 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
8086 | cust = get_compunit_symtab (per_cu); |
8087 | if (cust != NULL) | |
ec94af83 DE |
8088 | { |
8089 | /* If this is a type unit only add its symbol table if we haven't | |
8090 | seen it yet (type unit per_cu's can share symtabs). */ | |
8091 | if (per_cu->is_debug_types) | |
8092 | { | |
43f3e411 | 8093 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
8094 | if (*slot == NULL) |
8095 | { | |
43f3e411 DE |
8096 | *slot = cust; |
8097 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
8098 | if (cust->user == NULL) | |
8099 | cust->user = immediate_parent; | |
ec94af83 DE |
8100 | } |
8101 | } | |
8102 | else | |
f9125b6c | 8103 | { |
43f3e411 DE |
8104 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
8105 | if (cust->user == NULL) | |
8106 | cust->user = immediate_parent; | |
f9125b6c | 8107 | } |
ec94af83 | 8108 | } |
95554aad TT |
8109 | |
8110 | for (ix = 0; | |
796a7ff8 | 8111 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 8112 | ++ix) |
ec94af83 DE |
8113 | { |
8114 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 8115 | all_type_symtabs, iter, cust); |
ec94af83 | 8116 | } |
95554aad TT |
8117 | } |
8118 | ||
43f3e411 | 8119 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
8120 | PER_CU. */ |
8121 | ||
8122 | static void | |
43f3e411 | 8123 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 8124 | { |
f4dc4d17 DE |
8125 | gdb_assert (! per_cu->is_debug_types); |
8126 | ||
796a7ff8 | 8127 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
8128 | { |
8129 | int ix, len; | |
ec94af83 | 8130 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
8131 | struct compunit_symtab *compunit_symtab_iter; |
8132 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 8133 | htab_t all_children, all_type_symtabs; |
43f3e411 | 8134 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
8135 | |
8136 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 8137 | if (cust == NULL) |
95554aad TT |
8138 | return; |
8139 | ||
8140 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
8141 | NULL, xcalloc, xfree); | |
ec94af83 DE |
8142 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
8143 | NULL, xcalloc, xfree); | |
95554aad TT |
8144 | |
8145 | for (ix = 0; | |
796a7ff8 | 8146 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 8147 | ix, per_cu_iter); |
95554aad | 8148 | ++ix) |
ec94af83 DE |
8149 | { |
8150 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 8151 | all_type_symtabs, per_cu_iter, |
43f3e411 | 8152 | cust); |
ec94af83 | 8153 | } |
95554aad | 8154 | |
ec94af83 | 8155 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
8156 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
8157 | cust->includes | |
8d749320 SM |
8158 | = XOBNEWVEC (&dwarf2_per_objfile->objfile->objfile_obstack, |
8159 | struct compunit_symtab *, len + 1); | |
95554aad | 8160 | for (ix = 0; |
43f3e411 DE |
8161 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
8162 | compunit_symtab_iter); | |
95554aad | 8163 | ++ix) |
43f3e411 DE |
8164 | cust->includes[ix] = compunit_symtab_iter; |
8165 | cust->includes[len] = NULL; | |
95554aad | 8166 | |
43f3e411 | 8167 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 8168 | htab_delete (all_children); |
ec94af83 | 8169 | htab_delete (all_type_symtabs); |
95554aad TT |
8170 | } |
8171 | } | |
8172 | ||
8173 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
8174 | read. */ | |
8175 | ||
8176 | static void | |
8177 | process_cu_includes (void) | |
8178 | { | |
8179 | int ix; | |
8180 | struct dwarf2_per_cu_data *iter; | |
8181 | ||
8182 | for (ix = 0; | |
8183 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
8184 | ix, iter); | |
8185 | ++ix) | |
f4dc4d17 DE |
8186 | { |
8187 | if (! iter->is_debug_types) | |
43f3e411 | 8188 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 8189 | } |
95554aad TT |
8190 | |
8191 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
8192 | } | |
8193 | ||
9cdd5dbd | 8194 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
8195 | already been loaded into memory. */ |
8196 | ||
8197 | static void | |
95554aad TT |
8198 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8199 | enum language pretend_language) | |
10b3939b | 8200 | { |
10b3939b | 8201 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 8202 | struct objfile *objfile = per_cu->objfile; |
3e29f34a | 8203 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 8204 | CORE_ADDR lowpc, highpc; |
43f3e411 | 8205 | struct compunit_symtab *cust; |
3da10d80 | 8206 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 8207 | CORE_ADDR baseaddr; |
4359dff1 | 8208 | struct block *static_block; |
3e29f34a | 8209 | CORE_ADDR addr; |
10b3939b DJ |
8210 | |
8211 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8212 | ||
10b3939b DJ |
8213 | buildsym_init (); |
8214 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 8215 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
8216 | |
8217 | cu->list_in_scope = &file_symbols; | |
c906108c | 8218 | |
95554aad TT |
8219 | cu->language = pretend_language; |
8220 | cu->language_defn = language_def (cu->language); | |
8221 | ||
c906108c | 8222 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 8223 | process_die (cu->dies, cu); |
c906108c | 8224 | |
a766d390 DE |
8225 | /* For now fudge the Go package. */ |
8226 | if (cu->language == language_go) | |
8227 | fixup_go_packaging (cu); | |
8228 | ||
3da10d80 KS |
8229 | /* Now that we have processed all the DIEs in the CU, all the types |
8230 | should be complete, and it should now be safe to compute all of the | |
8231 | physnames. */ | |
8232 | compute_delayed_physnames (cu); | |
8233 | do_cleanups (delayed_list_cleanup); | |
8234 | ||
fae299cd DC |
8235 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
8236 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
8237 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 8238 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 8239 | |
3e29f34a MR |
8240 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
8241 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
8242 | |
8243 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
8244 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
8245 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
8246 | addrmap to help ensure it has an accurate map of pc values belonging to | |
8247 | this comp unit. */ | |
8248 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
8249 | ||
43f3e411 DE |
8250 | cust = end_symtab_from_static_block (static_block, |
8251 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 8252 | |
43f3e411 | 8253 | if (cust != NULL) |
c906108c | 8254 | { |
df15bd07 | 8255 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 8256 | |
8be455d7 JK |
8257 | /* Set symtab language to language from DW_AT_language. If the |
8258 | compilation is from a C file generated by language preprocessors, do | |
8259 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 8260 | if (!(cu->language == language_c |
40e3ad0e | 8261 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 8262 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
8263 | |
8264 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
8265 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
8266 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
8267 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
8268 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
8269 | |
8270 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
8271 | needed, it would be wrong due to missing DW_AT_producer there. | |
8272 | ||
8273 | Still one can confuse GDB by using non-standard GCC compilation | |
8274 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
8275 | */ | |
ab260dad | 8276 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 8277 | cust->locations_valid = 1; |
e0d00bc7 JK |
8278 | |
8279 | if (gcc_4_minor >= 5) | |
43f3e411 | 8280 | cust->epilogue_unwind_valid = 1; |
96408a79 | 8281 | |
43f3e411 | 8282 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 8283 | } |
9291a0cd TT |
8284 | |
8285 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8286 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
8287 | else |
8288 | { | |
8289 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8290 | pst->compunit_symtab = cust; |
9291a0cd TT |
8291 | pst->readin = 1; |
8292 | } | |
c906108c | 8293 | |
95554aad TT |
8294 | /* Push it for inclusion processing later. */ |
8295 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
8296 | ||
c906108c | 8297 | do_cleanups (back_to); |
f4dc4d17 | 8298 | } |
45cfd468 | 8299 | |
f4dc4d17 DE |
8300 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
8301 | already been loaded into memory. */ | |
8302 | ||
8303 | static void | |
8304 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
8305 | enum language pretend_language) | |
8306 | { | |
8307 | struct dwarf2_cu *cu = per_cu->cu; | |
8308 | struct objfile *objfile = per_cu->objfile; | |
43f3e411 | 8309 | struct compunit_symtab *cust; |
f4dc4d17 | 8310 | struct cleanup *back_to, *delayed_list_cleanup; |
0186c6a7 DE |
8311 | struct signatured_type *sig_type; |
8312 | ||
8313 | gdb_assert (per_cu->is_debug_types); | |
8314 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8315 | |
8316 | buildsym_init (); | |
8317 | back_to = make_cleanup (really_free_pendings, NULL); | |
8318 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
8319 | ||
8320 | cu->list_in_scope = &file_symbols; | |
8321 | ||
8322 | cu->language = pretend_language; | |
8323 | cu->language_defn = language_def (cu->language); | |
8324 | ||
8325 | /* The symbol tables are set up in read_type_unit_scope. */ | |
8326 | process_die (cu->dies, cu); | |
8327 | ||
8328 | /* For now fudge the Go package. */ | |
8329 | if (cu->language == language_go) | |
8330 | fixup_go_packaging (cu); | |
8331 | ||
8332 | /* Now that we have processed all the DIEs in the CU, all the types | |
8333 | should be complete, and it should now be safe to compute all of the | |
8334 | physnames. */ | |
8335 | compute_delayed_physnames (cu); | |
8336 | do_cleanups (delayed_list_cleanup); | |
8337 | ||
8338 | /* TUs share symbol tables. | |
8339 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
8340 | of it with end_expandable_symtab. Otherwise, complete the addition of |
8341 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 8342 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 8343 | { |
43f3e411 DE |
8344 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
8345 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 8346 | |
43f3e411 | 8347 | if (cust != NULL) |
f4dc4d17 DE |
8348 | { |
8349 | /* Set symtab language to language from DW_AT_language. If the | |
8350 | compilation is from a C file generated by language preprocessors, | |
8351 | do not set the language if it was already deduced by | |
8352 | start_subfile. */ | |
43f3e411 DE |
8353 | if (!(cu->language == language_c |
8354 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
8355 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
8356 | } |
8357 | } | |
8358 | else | |
8359 | { | |
0ab9ce85 | 8360 | augment_type_symtab (); |
43f3e411 | 8361 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
8362 | } |
8363 | ||
8364 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 8365 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
8366 | else |
8367 | { | |
8368 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 8369 | pst->compunit_symtab = cust; |
f4dc4d17 | 8370 | pst->readin = 1; |
45cfd468 | 8371 | } |
f4dc4d17 DE |
8372 | |
8373 | do_cleanups (back_to); | |
c906108c SS |
8374 | } |
8375 | ||
95554aad TT |
8376 | /* Process an imported unit DIE. */ |
8377 | ||
8378 | static void | |
8379 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
8380 | { | |
8381 | struct attribute *attr; | |
8382 | ||
f4dc4d17 DE |
8383 | /* For now we don't handle imported units in type units. */ |
8384 | if (cu->per_cu->is_debug_types) | |
8385 | { | |
8386 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8387 | " supported in type units [in module %s]"), | |
4262abfb | 8388 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
8389 | } |
8390 | ||
95554aad TT |
8391 | attr = dwarf2_attr (die, DW_AT_import, cu); |
8392 | if (attr != NULL) | |
8393 | { | |
9c541725 PA |
8394 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
8395 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
8396 | dwarf2_per_cu_data *per_cu | |
8397 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, cu->objfile); | |
95554aad | 8398 | |
69d751e3 | 8399 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
8400 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
8401 | load_full_comp_unit (per_cu, cu->language); | |
8402 | ||
796a7ff8 | 8403 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
8404 | per_cu); |
8405 | } | |
8406 | } | |
8407 | ||
adde2bff DE |
8408 | /* Reset the in_process bit of a die. */ |
8409 | ||
8410 | static void | |
8411 | reset_die_in_process (void *arg) | |
8412 | { | |
9a3c8263 | 8413 | struct die_info *die = (struct die_info *) arg; |
8c3cb9fa | 8414 | |
adde2bff DE |
8415 | die->in_process = 0; |
8416 | } | |
8417 | ||
c906108c SS |
8418 | /* Process a die and its children. */ |
8419 | ||
8420 | static void | |
e7c27a73 | 8421 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8422 | { |
adde2bff DE |
8423 | struct cleanup *in_process; |
8424 | ||
8425 | /* We should only be processing those not already in process. */ | |
8426 | gdb_assert (!die->in_process); | |
8427 | ||
8428 | die->in_process = 1; | |
8429 | in_process = make_cleanup (reset_die_in_process,die); | |
8430 | ||
c906108c SS |
8431 | switch (die->tag) |
8432 | { | |
8433 | case DW_TAG_padding: | |
8434 | break; | |
8435 | case DW_TAG_compile_unit: | |
95554aad | 8436 | case DW_TAG_partial_unit: |
e7c27a73 | 8437 | read_file_scope (die, cu); |
c906108c | 8438 | break; |
348e048f DE |
8439 | case DW_TAG_type_unit: |
8440 | read_type_unit_scope (die, cu); | |
8441 | break; | |
c906108c | 8442 | case DW_TAG_subprogram: |
c906108c | 8443 | case DW_TAG_inlined_subroutine: |
edb3359d | 8444 | read_func_scope (die, cu); |
c906108c SS |
8445 | break; |
8446 | case DW_TAG_lexical_block: | |
14898363 L |
8447 | case DW_TAG_try_block: |
8448 | case DW_TAG_catch_block: | |
e7c27a73 | 8449 | read_lexical_block_scope (die, cu); |
c906108c | 8450 | break; |
216f72a1 | 8451 | case DW_TAG_call_site: |
96408a79 SA |
8452 | case DW_TAG_GNU_call_site: |
8453 | read_call_site_scope (die, cu); | |
8454 | break; | |
c906108c | 8455 | case DW_TAG_class_type: |
680b30c7 | 8456 | case DW_TAG_interface_type: |
c906108c SS |
8457 | case DW_TAG_structure_type: |
8458 | case DW_TAG_union_type: | |
134d01f1 | 8459 | process_structure_scope (die, cu); |
c906108c SS |
8460 | break; |
8461 | case DW_TAG_enumeration_type: | |
134d01f1 | 8462 | process_enumeration_scope (die, cu); |
c906108c | 8463 | break; |
134d01f1 | 8464 | |
f792889a DJ |
8465 | /* These dies have a type, but processing them does not create |
8466 | a symbol or recurse to process the children. Therefore we can | |
8467 | read them on-demand through read_type_die. */ | |
c906108c | 8468 | case DW_TAG_subroutine_type: |
72019c9c | 8469 | case DW_TAG_set_type: |
c906108c | 8470 | case DW_TAG_array_type: |
c906108c | 8471 | case DW_TAG_pointer_type: |
c906108c | 8472 | case DW_TAG_ptr_to_member_type: |
c906108c | 8473 | case DW_TAG_reference_type: |
4297a3f0 | 8474 | case DW_TAG_rvalue_reference_type: |
c906108c | 8475 | case DW_TAG_string_type: |
c906108c | 8476 | break; |
134d01f1 | 8477 | |
c906108c | 8478 | case DW_TAG_base_type: |
a02abb62 | 8479 | case DW_TAG_subrange_type: |
cb249c71 | 8480 | case DW_TAG_typedef: |
134d01f1 DJ |
8481 | /* Add a typedef symbol for the type definition, if it has a |
8482 | DW_AT_name. */ | |
f792889a | 8483 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 8484 | break; |
c906108c | 8485 | case DW_TAG_common_block: |
e7c27a73 | 8486 | read_common_block (die, cu); |
c906108c SS |
8487 | break; |
8488 | case DW_TAG_common_inclusion: | |
8489 | break; | |
d9fa45fe | 8490 | case DW_TAG_namespace: |
4d4ec4e5 | 8491 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 8492 | read_namespace (die, cu); |
d9fa45fe | 8493 | break; |
5d7cb8df | 8494 | case DW_TAG_module: |
4d4ec4e5 | 8495 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
8496 | read_module (die, cu); |
8497 | break; | |
d9fa45fe | 8498 | case DW_TAG_imported_declaration: |
74921315 KS |
8499 | cu->processing_has_namespace_info = 1; |
8500 | if (read_namespace_alias (die, cu)) | |
8501 | break; | |
8502 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 8503 | case DW_TAG_imported_module: |
4d4ec4e5 | 8504 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
8505 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
8506 | || cu->language != language_fortran)) | |
8507 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
8508 | dwarf_tag_name (die->tag)); | |
8509 | read_import_statement (die, cu); | |
d9fa45fe | 8510 | break; |
95554aad TT |
8511 | |
8512 | case DW_TAG_imported_unit: | |
8513 | process_imported_unit_die (die, cu); | |
8514 | break; | |
8515 | ||
c906108c | 8516 | default: |
e7c27a73 | 8517 | new_symbol (die, NULL, cu); |
c906108c SS |
8518 | break; |
8519 | } | |
adde2bff DE |
8520 | |
8521 | do_cleanups (in_process); | |
c906108c | 8522 | } |
ca69b9e6 DE |
8523 | \f |
8524 | /* DWARF name computation. */ | |
c906108c | 8525 | |
94af9270 KS |
8526 | /* A helper function for dwarf2_compute_name which determines whether DIE |
8527 | needs to have the name of the scope prepended to the name listed in the | |
8528 | die. */ | |
8529 | ||
8530 | static int | |
8531 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8532 | { | |
1c809c68 TT |
8533 | struct attribute *attr; |
8534 | ||
94af9270 KS |
8535 | switch (die->tag) |
8536 | { | |
8537 | case DW_TAG_namespace: | |
8538 | case DW_TAG_typedef: | |
8539 | case DW_TAG_class_type: | |
8540 | case DW_TAG_interface_type: | |
8541 | case DW_TAG_structure_type: | |
8542 | case DW_TAG_union_type: | |
8543 | case DW_TAG_enumeration_type: | |
8544 | case DW_TAG_enumerator: | |
8545 | case DW_TAG_subprogram: | |
08a76f8a | 8546 | case DW_TAG_inlined_subroutine: |
94af9270 | 8547 | case DW_TAG_member: |
74921315 | 8548 | case DW_TAG_imported_declaration: |
94af9270 KS |
8549 | return 1; |
8550 | ||
8551 | case DW_TAG_variable: | |
c2b0a229 | 8552 | case DW_TAG_constant: |
94af9270 KS |
8553 | /* We only need to prefix "globally" visible variables. These include |
8554 | any variable marked with DW_AT_external or any variable that | |
8555 | lives in a namespace. [Variables in anonymous namespaces | |
8556 | require prefixing, but they are not DW_AT_external.] */ | |
8557 | ||
8558 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
8559 | { | |
8560 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 8561 | |
94af9270 KS |
8562 | return die_needs_namespace (die_specification (die, &spec_cu), |
8563 | spec_cu); | |
8564 | } | |
8565 | ||
1c809c68 | 8566 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
8567 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
8568 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
8569 | return 0; |
8570 | /* A variable in a lexical block of some kind does not need a | |
8571 | namespace, even though in C++ such variables may be external | |
8572 | and have a mangled name. */ | |
8573 | if (die->parent->tag == DW_TAG_lexical_block | |
8574 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
8575 | || die->parent->tag == DW_TAG_catch_block |
8576 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
8577 | return 0; |
8578 | return 1; | |
94af9270 KS |
8579 | |
8580 | default: | |
8581 | return 0; | |
8582 | } | |
8583 | } | |
8584 | ||
8585 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, | |
a766d390 | 8586 | compute the physname for the object, which include a method's: |
9c37b5ae | 8587 | - formal parameters (C++), |
a766d390 | 8588 | - receiver type (Go), |
a766d390 DE |
8589 | |
8590 | The term "physname" is a bit confusing. | |
8591 | For C++, for example, it is the demangled name. | |
8592 | For Go, for example, it's the mangled name. | |
94af9270 | 8593 | |
af6b7be1 JB |
8594 | For Ada, return the DIE's linkage name rather than the fully qualified |
8595 | name. PHYSNAME is ignored.. | |
8596 | ||
94af9270 KS |
8597 | The result is allocated on the objfile_obstack and canonicalized. */ |
8598 | ||
8599 | static const char * | |
15d034d0 TT |
8600 | dwarf2_compute_name (const char *name, |
8601 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
8602 | int physname) |
8603 | { | |
bb5ed363 DE |
8604 | struct objfile *objfile = cu->objfile; |
8605 | ||
94af9270 KS |
8606 | if (name == NULL) |
8607 | name = dwarf2_name (die, cu); | |
8608 | ||
2ee7123e DE |
8609 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
8610 | but otherwise compute it by typename_concat inside GDB. | |
8611 | FIXME: Actually this is not really true, or at least not always true. | |
8612 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
8613 | Fortran names because there is no mangling standard. So new_symbol_full | |
8614 | will set the demangled name to the result of dwarf2_full_name, and it is | |
8615 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
8616 | if (cu->language == language_ada |
8617 | || (cu->language == language_fortran && physname)) | |
8618 | { | |
8619 | /* For Ada unit, we prefer the linkage name over the name, as | |
8620 | the former contains the exported name, which the user expects | |
8621 | to be able to reference. Ideally, we want the user to be able | |
8622 | to reference this entity using either natural or linkage name, | |
8623 | but we haven't started looking at this enhancement yet. */ | |
2ee7123e | 8624 | const char *linkage_name; |
f55ee35c | 8625 | |
2ee7123e DE |
8626 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); |
8627 | if (linkage_name == NULL) | |
8628 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8629 | if (linkage_name != NULL) | |
8630 | return linkage_name; | |
f55ee35c JK |
8631 | } |
8632 | ||
94af9270 KS |
8633 | /* These are the only languages we know how to qualify names in. */ |
8634 | if (name != NULL | |
9c37b5ae | 8635 | && (cu->language == language_cplus |
c44af4eb TT |
8636 | || cu->language == language_fortran || cu->language == language_d |
8637 | || cu->language == language_rust)) | |
94af9270 KS |
8638 | { |
8639 | if (die_needs_namespace (die, cu)) | |
8640 | { | |
8641 | long length; | |
0d5cff50 | 8642 | const char *prefix; |
34a68019 | 8643 | const char *canonical_name = NULL; |
94af9270 | 8644 | |
d7e74731 PA |
8645 | string_file buf; |
8646 | ||
94af9270 | 8647 | prefix = determine_prefix (die, cu); |
94af9270 KS |
8648 | if (*prefix != '\0') |
8649 | { | |
f55ee35c JK |
8650 | char *prefixed_name = typename_concat (NULL, prefix, name, |
8651 | physname, cu); | |
9a619af0 | 8652 | |
d7e74731 | 8653 | buf.puts (prefixed_name); |
94af9270 KS |
8654 | xfree (prefixed_name); |
8655 | } | |
8656 | else | |
d7e74731 | 8657 | buf.puts (name); |
94af9270 | 8658 | |
98bfdba5 PA |
8659 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
8660 | as children with DW_TAG_template_type_param or | |
8661 | DW_TAG_value_type_param. If the latter, add them to the name | |
8662 | here. If the name already has template parameters, then | |
8663 | skip this step; some versions of GCC emit both, and | |
8664 | it is more efficient to use the pre-computed name. | |
8665 | ||
8666 | Something to keep in mind about this process: it is very | |
8667 | unlikely, or in some cases downright impossible, to produce | |
8668 | something that will match the mangled name of a function. | |
8669 | If the definition of the function has the same debug info, | |
8670 | we should be able to match up with it anyway. But fallbacks | |
8671 | using the minimal symbol, for instance to find a method | |
8672 | implemented in a stripped copy of libstdc++, will not work. | |
8673 | If we do not have debug info for the definition, we will have to | |
8674 | match them up some other way. | |
8675 | ||
8676 | When we do name matching there is a related problem with function | |
8677 | templates; two instantiated function templates are allowed to | |
8678 | differ only by their return types, which we do not add here. */ | |
8679 | ||
8680 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
8681 | { | |
8682 | struct attribute *attr; | |
8683 | struct die_info *child; | |
8684 | int first = 1; | |
8685 | ||
8686 | die->building_fullname = 1; | |
8687 | ||
8688 | for (child = die->child; child != NULL; child = child->sibling) | |
8689 | { | |
8690 | struct type *type; | |
12df843f | 8691 | LONGEST value; |
d521ce57 | 8692 | const gdb_byte *bytes; |
98bfdba5 PA |
8693 | struct dwarf2_locexpr_baton *baton; |
8694 | struct value *v; | |
8695 | ||
8696 | if (child->tag != DW_TAG_template_type_param | |
8697 | && child->tag != DW_TAG_template_value_param) | |
8698 | continue; | |
8699 | ||
8700 | if (first) | |
8701 | { | |
d7e74731 | 8702 | buf.puts ("<"); |
98bfdba5 PA |
8703 | first = 0; |
8704 | } | |
8705 | else | |
d7e74731 | 8706 | buf.puts (", "); |
98bfdba5 PA |
8707 | |
8708 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
8709 | if (attr == NULL) | |
8710 | { | |
8711 | complaint (&symfile_complaints, | |
8712 | _("template parameter missing DW_AT_type")); | |
d7e74731 | 8713 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
8714 | continue; |
8715 | } | |
8716 | type = die_type (child, cu); | |
8717 | ||
8718 | if (child->tag == DW_TAG_template_type_param) | |
8719 | { | |
d7e74731 | 8720 | c_print_type (type, "", &buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
8721 | continue; |
8722 | } | |
8723 | ||
8724 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
8725 | if (attr == NULL) | |
8726 | { | |
8727 | complaint (&symfile_complaints, | |
3e43a32a MS |
8728 | _("template parameter missing " |
8729 | "DW_AT_const_value")); | |
d7e74731 | 8730 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
8731 | continue; |
8732 | } | |
8733 | ||
8734 | dwarf2_const_value_attr (attr, type, name, | |
8735 | &cu->comp_unit_obstack, cu, | |
8736 | &value, &bytes, &baton); | |
8737 | ||
8738 | if (TYPE_NOSIGN (type)) | |
8739 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
8740 | changed, this can use value_print instead. */ | |
d7e74731 | 8741 | c_printchar (value, type, &buf); |
98bfdba5 PA |
8742 | else |
8743 | { | |
8744 | struct value_print_options opts; | |
8745 | ||
8746 | if (baton != NULL) | |
8747 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
8748 | baton->data, | |
8749 | baton->size, | |
8750 | baton->per_cu); | |
8751 | else if (bytes != NULL) | |
8752 | { | |
8753 | v = allocate_value (type); | |
8754 | memcpy (value_contents_writeable (v), bytes, | |
8755 | TYPE_LENGTH (type)); | |
8756 | } | |
8757 | else | |
8758 | v = value_from_longest (type, value); | |
8759 | ||
3e43a32a MS |
8760 | /* Specify decimal so that we do not depend on |
8761 | the radix. */ | |
98bfdba5 PA |
8762 | get_formatted_print_options (&opts, 'd'); |
8763 | opts.raw = 1; | |
d7e74731 | 8764 | value_print (v, &buf, &opts); |
98bfdba5 PA |
8765 | release_value (v); |
8766 | value_free (v); | |
8767 | } | |
8768 | } | |
8769 | ||
8770 | die->building_fullname = 0; | |
8771 | ||
8772 | if (!first) | |
8773 | { | |
8774 | /* Close the argument list, with a space if necessary | |
8775 | (nested templates). */ | |
d7e74731 PA |
8776 | if (!buf.empty () && buf.string ().back () == '>') |
8777 | buf.puts (" >"); | |
98bfdba5 | 8778 | else |
d7e74731 | 8779 | buf.puts (">"); |
98bfdba5 PA |
8780 | } |
8781 | } | |
8782 | ||
9c37b5ae | 8783 | /* For C++ methods, append formal parameter type |
94af9270 | 8784 | information, if PHYSNAME. */ |
6e70227d | 8785 | |
94af9270 | 8786 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 8787 | && cu->language == language_cplus) |
94af9270 KS |
8788 | { |
8789 | struct type *type = read_type_die (die, cu); | |
8790 | ||
d7e74731 | 8791 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 8792 | &type_print_raw_options); |
94af9270 | 8793 | |
9c37b5ae | 8794 | if (cu->language == language_cplus) |
94af9270 | 8795 | { |
60430eff DJ |
8796 | /* Assume that an artificial first parameter is |
8797 | "this", but do not crash if it is not. RealView | |
8798 | marks unnamed (and thus unused) parameters as | |
8799 | artificial; there is no way to differentiate | |
8800 | the two cases. */ | |
94af9270 KS |
8801 | if (TYPE_NFIELDS (type) > 0 |
8802 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 8803 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
8804 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
8805 | 0)))) | |
d7e74731 | 8806 | buf.puts (" const"); |
94af9270 KS |
8807 | } |
8808 | } | |
8809 | ||
d7e74731 | 8810 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
8811 | |
8812 | if (cu->language == language_cplus) | |
34a68019 | 8813 | canonical_name |
322a8516 | 8814 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
8815 | &objfile->per_bfd->storage_obstack); |
8816 | ||
8817 | /* If we only computed INTERMEDIATE_NAME, or if | |
8818 | INTERMEDIATE_NAME is already canonical, then we need to | |
8819 | copy it to the appropriate obstack. */ | |
322a8516 | 8820 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
8821 | name = ((const char *) |
8822 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
8823 | intermediate_name.c_str (), |
8824 | intermediate_name.length ())); | |
34a68019 TT |
8825 | else |
8826 | name = canonical_name; | |
94af9270 KS |
8827 | } |
8828 | } | |
8829 | ||
8830 | return name; | |
8831 | } | |
8832 | ||
0114d602 DJ |
8833 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
8834 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 8835 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
8836 | not have a name. NAME may either be from a previous call to |
8837 | dwarf2_name or NULL. | |
8838 | ||
9c37b5ae | 8839 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
8840 | |
8841 | static const char * | |
15d034d0 | 8842 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 8843 | { |
94af9270 KS |
8844 | return dwarf2_compute_name (name, die, cu, 0); |
8845 | } | |
0114d602 | 8846 | |
94af9270 KS |
8847 | /* Construct a physname for the given DIE in CU. NAME may either be |
8848 | from a previous call to dwarf2_name or NULL. The result will be | |
8849 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
8850 | name. | |
0114d602 | 8851 | |
9c37b5ae | 8852 | The output string will be canonicalized (if C++). */ |
0114d602 | 8853 | |
94af9270 | 8854 | static const char * |
15d034d0 | 8855 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 8856 | { |
bb5ed363 | 8857 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
8858 | const char *retval, *mangled = NULL, *canon = NULL; |
8859 | struct cleanup *back_to; | |
8860 | int need_copy = 1; | |
8861 | ||
8862 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
8863 | on its own. */ | |
8864 | if (!die_needs_namespace (die, cu)) | |
8865 | return dwarf2_compute_name (name, die, cu, 1); | |
8866 | ||
8867 | back_to = make_cleanup (null_cleanup, NULL); | |
8868 | ||
7d45c7c3 KB |
8869 | mangled = dwarf2_string_attr (die, DW_AT_linkage_name, cu); |
8870 | if (mangled == NULL) | |
8871 | mangled = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
900e11f9 | 8872 | |
e98c9e7c TT |
8873 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
8874 | See https://github.com/rust-lang/rust/issues/32925. */ | |
8875 | if (cu->language == language_rust && mangled != NULL | |
8876 | && strchr (mangled, '{') != NULL) | |
8877 | mangled = NULL; | |
8878 | ||
900e11f9 JK |
8879 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
8880 | has computed. */ | |
7d45c7c3 | 8881 | if (mangled != NULL) |
900e11f9 JK |
8882 | { |
8883 | char *demangled; | |
8884 | ||
900e11f9 JK |
8885 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return |
8886 | type. It is easier for GDB users to search for such functions as | |
8887 | `name(params)' than `long name(params)'. In such case the minimal | |
8888 | symbol names do not match the full symbol names but for template | |
8889 | functions there is never a need to look up their definition from their | |
8890 | declaration so the only disadvantage remains the minimal symbol | |
8891 | variant `long name(params)' does not have the proper inferior type. | |
8892 | */ | |
8893 | ||
a766d390 DE |
8894 | if (cu->language == language_go) |
8895 | { | |
8896 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
8897 | new_symbol_full assumes we return the mangled name. | |
8898 | This just undoes that lie until things are cleaned up. */ | |
8899 | demangled = NULL; | |
8900 | } | |
8901 | else | |
8902 | { | |
8de20a37 | 8903 | demangled = gdb_demangle (mangled, |
9c37b5ae | 8904 | (DMGL_PARAMS | DMGL_ANSI | DMGL_RET_DROP)); |
a766d390 | 8905 | } |
900e11f9 JK |
8906 | if (demangled) |
8907 | { | |
8908 | make_cleanup (xfree, demangled); | |
8909 | canon = demangled; | |
8910 | } | |
8911 | else | |
8912 | { | |
8913 | canon = mangled; | |
8914 | need_copy = 0; | |
8915 | } | |
8916 | } | |
8917 | ||
8918 | if (canon == NULL || check_physname) | |
8919 | { | |
8920 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
8921 | ||
8922 | if (canon != NULL && strcmp (physname, canon) != 0) | |
8923 | { | |
8924 | /* It may not mean a bug in GDB. The compiler could also | |
8925 | compute DW_AT_linkage_name incorrectly. But in such case | |
8926 | GDB would need to be bug-to-bug compatible. */ | |
8927 | ||
8928 | complaint (&symfile_complaints, | |
8929 | _("Computed physname <%s> does not match demangled <%s> " | |
8930 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
9c541725 | 8931 | physname, canon, mangled, to_underlying (die->sect_off), |
4262abfb | 8932 | objfile_name (objfile)); |
900e11f9 JK |
8933 | |
8934 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
8935 | is available here - over computed PHYSNAME. It is safer | |
8936 | against both buggy GDB and buggy compilers. */ | |
8937 | ||
8938 | retval = canon; | |
8939 | } | |
8940 | else | |
8941 | { | |
8942 | retval = physname; | |
8943 | need_copy = 0; | |
8944 | } | |
8945 | } | |
8946 | else | |
8947 | retval = canon; | |
8948 | ||
8949 | if (need_copy) | |
224c3ddb SM |
8950 | retval = ((const char *) |
8951 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
8952 | retval, strlen (retval))); | |
900e11f9 JK |
8953 | |
8954 | do_cleanups (back_to); | |
8955 | return retval; | |
0114d602 DJ |
8956 | } |
8957 | ||
74921315 KS |
8958 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
8959 | a new symbol for it. | |
8960 | ||
8961 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
8962 | ||
8963 | static int | |
8964 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
8965 | { | |
8966 | struct attribute *attr; | |
8967 | ||
8968 | /* If the die does not have a name, this is not a namespace | |
8969 | alias. */ | |
8970 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8971 | if (attr != NULL) | |
8972 | { | |
8973 | int num; | |
8974 | struct die_info *d = die; | |
8975 | struct dwarf2_cu *imported_cu = cu; | |
8976 | ||
8977 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
8978 | keep inspecting DIEs until we hit the underlying import. */ | |
8979 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
8980 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
8981 | { | |
8982 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
8983 | if (attr == NULL) | |
8984 | break; | |
8985 | ||
8986 | d = follow_die_ref (d, attr, &imported_cu); | |
8987 | if (d->tag != DW_TAG_imported_declaration) | |
8988 | break; | |
8989 | } | |
8990 | ||
8991 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
8992 | { | |
8993 | complaint (&symfile_complaints, | |
8994 | _("DIE at 0x%x has too many recursively imported " | |
9c541725 | 8995 | "declarations"), to_underlying (d->sect_off)); |
74921315 KS |
8996 | return 0; |
8997 | } | |
8998 | ||
8999 | if (attr != NULL) | |
9000 | { | |
9001 | struct type *type; | |
9c541725 | 9002 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 9003 | |
9c541725 | 9004 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
9005 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
9006 | { | |
9007 | /* This declaration is a global namespace alias. Add | |
9008 | a symbol for it whose type is the aliased namespace. */ | |
9009 | new_symbol (die, type, cu); | |
9010 | return 1; | |
9011 | } | |
9012 | } | |
9013 | } | |
9014 | ||
9015 | return 0; | |
9016 | } | |
9017 | ||
22cee43f PMR |
9018 | /* Return the using directives repository (global or local?) to use in the |
9019 | current context for LANGUAGE. | |
9020 | ||
9021 | For Ada, imported declarations can materialize renamings, which *may* be | |
9022 | global. However it is impossible (for now?) in DWARF to distinguish | |
9023 | "external" imported declarations and "static" ones. As all imported | |
9024 | declarations seem to be static in all other languages, make them all CU-wide | |
9025 | global only in Ada. */ | |
9026 | ||
9027 | static struct using_direct ** | |
9028 | using_directives (enum language language) | |
9029 | { | |
9030 | if (language == language_ada && context_stack_depth == 0) | |
9031 | return &global_using_directives; | |
9032 | else | |
9033 | return &local_using_directives; | |
9034 | } | |
9035 | ||
27aa8d6a SW |
9036 | /* Read the import statement specified by the given die and record it. */ |
9037 | ||
9038 | static void | |
9039 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
9040 | { | |
bb5ed363 | 9041 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 9042 | struct attribute *import_attr; |
32019081 | 9043 | struct die_info *imported_die, *child_die; |
de4affc9 | 9044 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 9045 | const char *imported_name; |
794684b6 | 9046 | const char *imported_name_prefix; |
13387711 SW |
9047 | const char *canonical_name; |
9048 | const char *import_alias; | |
9049 | const char *imported_declaration = NULL; | |
794684b6 | 9050 | const char *import_prefix; |
32019081 JK |
9051 | VEC (const_char_ptr) *excludes = NULL; |
9052 | struct cleanup *cleanups; | |
13387711 | 9053 | |
27aa8d6a SW |
9054 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
9055 | if (import_attr == NULL) | |
9056 | { | |
9057 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
9058 | dwarf_tag_name (die->tag)); | |
9059 | return; | |
9060 | } | |
9061 | ||
de4affc9 CC |
9062 | imported_cu = cu; |
9063 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
9064 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
9065 | if (imported_name == NULL) |
9066 | { | |
9067 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
9068 | ||
9069 | The import in the following code: | |
9070 | namespace A | |
9071 | { | |
9072 | typedef int B; | |
9073 | } | |
9074 | ||
9075 | int main () | |
9076 | { | |
9077 | using A::B; | |
9078 | B b; | |
9079 | return b; | |
9080 | } | |
9081 | ||
9082 | ... | |
9083 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
9084 | <52> DW_AT_decl_file : 1 | |
9085 | <53> DW_AT_decl_line : 6 | |
9086 | <54> DW_AT_import : <0x75> | |
9087 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
9088 | <59> DW_AT_name : B | |
9089 | <5b> DW_AT_decl_file : 1 | |
9090 | <5c> DW_AT_decl_line : 2 | |
9091 | <5d> DW_AT_type : <0x6e> | |
9092 | ... | |
9093 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
9094 | <76> DW_AT_byte_size : 4 | |
9095 | <77> DW_AT_encoding : 5 (signed) | |
9096 | ||
9097 | imports the wrong die ( 0x75 instead of 0x58 ). | |
9098 | This case will be ignored until the gcc bug is fixed. */ | |
9099 | return; | |
9100 | } | |
9101 | ||
82856980 SW |
9102 | /* Figure out the local name after import. */ |
9103 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 9104 | |
794684b6 SW |
9105 | /* Figure out where the statement is being imported to. */ |
9106 | import_prefix = determine_prefix (die, cu); | |
9107 | ||
9108 | /* Figure out what the scope of the imported die is and prepend it | |
9109 | to the name of the imported die. */ | |
de4affc9 | 9110 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 9111 | |
f55ee35c JK |
9112 | if (imported_die->tag != DW_TAG_namespace |
9113 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 9114 | { |
13387711 SW |
9115 | imported_declaration = imported_name; |
9116 | canonical_name = imported_name_prefix; | |
794684b6 | 9117 | } |
13387711 | 9118 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 9119 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
9120 | imported_name_prefix, |
9121 | (cu->language == language_d ? "." : "::"), | |
9122 | imported_name, (char *) NULL); | |
13387711 SW |
9123 | else |
9124 | canonical_name = imported_name; | |
794684b6 | 9125 | |
32019081 JK |
9126 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
9127 | ||
9128 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
9129 | for (child_die = die->child; child_die && child_die->tag; | |
9130 | child_die = sibling_die (child_die)) | |
9131 | { | |
9132 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
9133 | represented by an imported module entry with an import attribute | |
9134 | referring to the module and owned entries corresponding to those | |
9135 | entities that are renamed as part of being imported. */ | |
9136 | ||
9137 | if (child_die->tag != DW_TAG_imported_declaration) | |
9138 | { | |
9139 | complaint (&symfile_complaints, | |
9140 | _("child DW_TAG_imported_declaration expected " | |
9141 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 9142 | to_underlying (child_die->sect_off), objfile_name (objfile)); |
32019081 JK |
9143 | continue; |
9144 | } | |
9145 | ||
9146 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
9147 | if (import_attr == NULL) | |
9148 | { | |
9149 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
9150 | dwarf_tag_name (child_die->tag)); | |
9151 | continue; | |
9152 | } | |
9153 | ||
9154 | imported_cu = cu; | |
9155 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
9156 | &imported_cu); | |
9157 | imported_name = dwarf2_name (imported_die, imported_cu); | |
9158 | if (imported_name == NULL) | |
9159 | { | |
9160 | complaint (&symfile_complaints, | |
9161 | _("child DW_TAG_imported_declaration has unknown " | |
9162 | "imported name - DIE at 0x%x [in module %s]"), | |
9c541725 | 9163 | to_underlying (child_die->sect_off), objfile_name (objfile)); |
32019081 JK |
9164 | continue; |
9165 | } | |
9166 | ||
9167 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
9168 | ||
9169 | process_die (child_die, cu); | |
9170 | } | |
9171 | ||
22cee43f PMR |
9172 | add_using_directive (using_directives (cu->language), |
9173 | import_prefix, | |
9174 | canonical_name, | |
9175 | import_alias, | |
9176 | imported_declaration, | |
9177 | excludes, | |
9178 | 0, | |
9179 | &objfile->objfile_obstack); | |
32019081 JK |
9180 | |
9181 | do_cleanups (cleanups); | |
27aa8d6a SW |
9182 | } |
9183 | ||
1b80a9fa JK |
9184 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
9185 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
9186 | this, it was first present in GCC release 4.3.0. */ | |
9187 | ||
9188 | static int | |
9189 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
9190 | { | |
9191 | if (!cu->checked_producer) | |
9192 | check_producer (cu); | |
9193 | ||
9194 | return cu->producer_is_gcc_lt_4_3; | |
9195 | } | |
9196 | ||
d721ba37 PA |
9197 | static file_and_directory |
9198 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 9199 | { |
d721ba37 PA |
9200 | file_and_directory res; |
9201 | ||
9291a0cd TT |
9202 | /* Find the filename. Do not use dwarf2_name here, since the filename |
9203 | is not a source language identifier. */ | |
d721ba37 PA |
9204 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
9205 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 9206 | |
d721ba37 PA |
9207 | if (res.comp_dir == NULL |
9208 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
9209 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 9210 | { |
d721ba37 PA |
9211 | res.comp_dir_storage = ldirname (res.name); |
9212 | if (!res.comp_dir_storage.empty ()) | |
9213 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 9214 | } |
d721ba37 | 9215 | if (res.comp_dir != NULL) |
9291a0cd TT |
9216 | { |
9217 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
9218 | directory, get rid of it. */ | |
d721ba37 | 9219 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 9220 | |
d721ba37 PA |
9221 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
9222 | res.comp_dir = cp + 1; | |
9291a0cd TT |
9223 | } |
9224 | ||
d721ba37 PA |
9225 | if (res.name == NULL) |
9226 | res.name = "<unknown>"; | |
9227 | ||
9228 | return res; | |
9291a0cd TT |
9229 | } |
9230 | ||
f4dc4d17 DE |
9231 | /* Handle DW_AT_stmt_list for a compilation unit. |
9232 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
9233 | COMP_DIR is the compilation directory. LOWPC is passed to |
9234 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
9235 | |
9236 | static void | |
9237 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 9238 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 9239 | { |
527f3840 | 9240 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 9241 | struct attribute *attr; |
527f3840 JK |
9242 | struct line_header line_header_local; |
9243 | hashval_t line_header_local_hash; | |
9244 | unsigned u; | |
9245 | void **slot; | |
9246 | int decode_mapping; | |
2ab95328 | 9247 | |
f4dc4d17 DE |
9248 | gdb_assert (! cu->per_cu->is_debug_types); |
9249 | ||
2ab95328 | 9250 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
9251 | if (attr == NULL) |
9252 | return; | |
9253 | ||
9c541725 | 9254 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
9255 | |
9256 | /* The line header hash table is only created if needed (it exists to | |
9257 | prevent redundant reading of the line table for partial_units). | |
9258 | If we're given a partial_unit, we'll need it. If we're given a | |
9259 | compile_unit, then use the line header hash table if it's already | |
9260 | created, but don't create one just yet. */ | |
9261 | ||
9262 | if (dwarf2_per_objfile->line_header_hash == NULL | |
9263 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 9264 | { |
527f3840 JK |
9265 | dwarf2_per_objfile->line_header_hash |
9266 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
9267 | line_header_eq_voidp, | |
9268 | free_line_header_voidp, | |
9269 | &objfile->objfile_obstack, | |
9270 | hashtab_obstack_allocate, | |
9271 | dummy_obstack_deallocate); | |
9272 | } | |
2ab95328 | 9273 | |
9c541725 | 9274 | line_header_local.sect_off = line_offset; |
527f3840 JK |
9275 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
9276 | line_header_local_hash = line_header_hash (&line_header_local); | |
9277 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
9278 | { | |
9279 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9280 | &line_header_local, | |
9281 | line_header_local_hash, NO_INSERT); | |
9282 | ||
9283 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
9284 | is not present in *SLOT (since if there is something in *SLOT then | |
9285 | it will be for a partial_unit). */ | |
9286 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 9287 | { |
527f3840 | 9288 | gdb_assert (*slot != NULL); |
9a3c8263 | 9289 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 9290 | return; |
dee91e82 | 9291 | } |
2ab95328 | 9292 | } |
527f3840 JK |
9293 | |
9294 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
9295 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
9296 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
9297 | if (lh == NULL) | |
527f3840 | 9298 | return; |
fff8551c | 9299 | cu->line_header = lh.get (); |
527f3840 JK |
9300 | |
9301 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
9302 | slot = NULL; | |
9303 | else | |
9304 | { | |
9305 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
9306 | &line_header_local, | |
9307 | line_header_local_hash, INSERT); | |
9308 | gdb_assert (slot != NULL); | |
9309 | } | |
9310 | if (slot != NULL && *slot == NULL) | |
9311 | { | |
9312 | /* This newly decoded line number information unit will be owned | |
9313 | by line_header_hash hash table. */ | |
9314 | *slot = cu->line_header; | |
9315 | } | |
9316 | else | |
9317 | { | |
9318 | /* We cannot free any current entry in (*slot) as that struct line_header | |
9319 | may be already used by multiple CUs. Create only temporary decoded | |
9320 | line_header for this CU - it may happen at most once for each line | |
9321 | number information unit. And if we're not using line_header_hash | |
9322 | then this is what we want as well. */ | |
9323 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
9324 | } |
9325 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
9326 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
9327 | decode_mapping); | |
fff8551c PA |
9328 | |
9329 | lh.release (); | |
2ab95328 TT |
9330 | } |
9331 | ||
95554aad | 9332 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 9333 | |
c906108c | 9334 | static void |
e7c27a73 | 9335 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9336 | { |
dee91e82 | 9337 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 9338 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 9339 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
9340 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
9341 | struct attribute *attr; | |
c906108c | 9342 | struct die_info *child_die; |
e142c38c | 9343 | CORE_ADDR baseaddr; |
6e70227d | 9344 | |
e142c38c | 9345 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 9346 | |
fae299cd | 9347 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
9348 | |
9349 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
9350 | from finish_block. */ | |
2acceee2 | 9351 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 9352 | lowpc = highpc; |
3e29f34a | 9353 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 9354 | |
d721ba37 | 9355 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 9356 | |
95554aad | 9357 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 9358 | |
f4b8a18d KW |
9359 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
9360 | standardised yet. As a workaround for the language detection we fall | |
9361 | back to the DW_AT_producer string. */ | |
9362 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
9363 | cu->language = language_opencl; | |
9364 | ||
3019eac3 DE |
9365 | /* Similar hack for Go. */ |
9366 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
9367 | set_cu_language (DW_LANG_Go, cu); | |
9368 | ||
d721ba37 | 9369 | dwarf2_start_symtab (cu, fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
9370 | |
9371 | /* Decode line number information if present. We do this before | |
9372 | processing child DIEs, so that the line header table is available | |
9373 | for DW_AT_decl_file. */ | |
d721ba37 | 9374 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
9375 | |
9376 | /* Process all dies in compilation unit. */ | |
9377 | if (die->child != NULL) | |
9378 | { | |
9379 | child_die = die->child; | |
9380 | while (child_die && child_die->tag) | |
9381 | { | |
9382 | process_die (child_die, cu); | |
9383 | child_die = sibling_die (child_die); | |
9384 | } | |
9385 | } | |
9386 | ||
9387 | /* Decode macro information, if present. Dwarf 2 macro information | |
9388 | refers to information in the line number info statement program | |
9389 | header, so we can only read it if we've read the header | |
9390 | successfully. */ | |
0af92d60 JK |
9391 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
9392 | if (attr == NULL) | |
9393 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
9394 | if (attr && cu->line_header) |
9395 | { | |
9396 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
9397 | complaint (&symfile_complaints, | |
0af92d60 | 9398 | _("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 9399 | |
43f3e411 | 9400 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
9401 | } |
9402 | else | |
9403 | { | |
9404 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
9405 | if (attr && cu->line_header) | |
9406 | { | |
9407 | unsigned int macro_offset = DW_UNSND (attr); | |
9408 | ||
43f3e411 | 9409 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
9410 | } |
9411 | } | |
3019eac3 DE |
9412 | } |
9413 | ||
f4dc4d17 DE |
9414 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
9415 | Create the set of symtabs used by this TU, or if this TU is sharing | |
9416 | symtabs with another TU and the symtabs have already been created | |
9417 | then restore those symtabs in the line header. | |
9418 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
9419 | |
9420 | static void | |
f4dc4d17 | 9421 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 9422 | { |
f4dc4d17 DE |
9423 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
9424 | struct type_unit_group *tu_group; | |
9425 | int first_time; | |
3019eac3 | 9426 | struct attribute *attr; |
9c541725 | 9427 | unsigned int i; |
0186c6a7 | 9428 | struct signatured_type *sig_type; |
3019eac3 | 9429 | |
f4dc4d17 | 9430 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 9431 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 9432 | |
f4dc4d17 | 9433 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 9434 | |
f4dc4d17 | 9435 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 9436 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
9437 | if (sig_type->type_unit_group == NULL) |
9438 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
9439 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
9440 | |
9441 | /* If we've already processed this stmt_list there's no real need to | |
9442 | do it again, we could fake it and just recreate the part we need | |
9443 | (file name,index -> symtab mapping). If data shows this optimization | |
9444 | is useful we can do it then. */ | |
43f3e411 | 9445 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
9446 | |
9447 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
9448 | debug info. */ | |
fff8551c | 9449 | line_header_up lh; |
f4dc4d17 | 9450 | if (attr != NULL) |
3019eac3 | 9451 | { |
9c541725 | 9452 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
f4dc4d17 DE |
9453 | lh = dwarf_decode_line_header (line_offset, cu); |
9454 | } | |
9455 | if (lh == NULL) | |
9456 | { | |
9457 | if (first_time) | |
9458 | dwarf2_start_symtab (cu, "", NULL, 0); | |
9459 | else | |
9460 | { | |
9461 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 9462 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 9463 | } |
f4dc4d17 | 9464 | return; |
3019eac3 DE |
9465 | } |
9466 | ||
fff8551c | 9467 | cu->line_header = lh.get (); |
3019eac3 | 9468 | |
f4dc4d17 DE |
9469 | if (first_time) |
9470 | { | |
43f3e411 | 9471 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 9472 | |
1fd60fc0 DE |
9473 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
9474 | still initializing it, and our caller (a few levels up) | |
9475 | process_full_type_unit still needs to know if this is the first | |
9476 | time. */ | |
9477 | ||
fff8551c PA |
9478 | tu_group->num_symtabs = lh->file_names.size (); |
9479 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->file_names.size ()); | |
3019eac3 | 9480 | |
fff8551c | 9481 | for (i = 0; i < lh->file_names.size (); ++i) |
f4dc4d17 | 9482 | { |
8c43009f | 9483 | file_entry &fe = lh->file_names[i]; |
3019eac3 | 9484 | |
fff8551c | 9485 | dwarf2_start_subfile (fe.name, fe.include_dir (lh.get ())); |
3019eac3 | 9486 | |
f4dc4d17 DE |
9487 | if (current_subfile->symtab == NULL) |
9488 | { | |
9489 | /* NOTE: start_subfile will recognize when it's been passed | |
9490 | a file it has already seen. So we can't assume there's a | |
43f3e411 | 9491 | simple mapping from lh->file_names to subfiles, plus |
f4dc4d17 | 9492 | lh->file_names may contain dups. */ |
43f3e411 DE |
9493 | current_subfile->symtab |
9494 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
9495 | } |
9496 | ||
8c43009f PA |
9497 | fe.symtab = current_subfile->symtab; |
9498 | tu_group->symtabs[i] = fe.symtab; | |
f4dc4d17 DE |
9499 | } |
9500 | } | |
9501 | else | |
3019eac3 | 9502 | { |
0ab9ce85 | 9503 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 9504 | |
fff8551c | 9505 | for (i = 0; i < lh->file_names.size (); ++i) |
f4dc4d17 DE |
9506 | { |
9507 | struct file_entry *fe = &lh->file_names[i]; | |
9508 | ||
9509 | fe->symtab = tu_group->symtabs[i]; | |
9510 | } | |
3019eac3 DE |
9511 | } |
9512 | ||
fff8551c PA |
9513 | lh.release (); |
9514 | ||
f4dc4d17 DE |
9515 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
9516 | so they don't have a "real" (so to speak) symtab anyway. | |
9517 | There is later code that will assign the main symtab to all symbols | |
9518 | that don't have one. We need to handle the case of a symbol with a | |
9519 | missing symtab (DW_AT_decl_file) anyway. */ | |
9520 | } | |
3019eac3 | 9521 | |
f4dc4d17 DE |
9522 | /* Process DW_TAG_type_unit. |
9523 | For TUs we want to skip the first top level sibling if it's not the | |
9524 | actual type being defined by this TU. In this case the first top | |
9525 | level sibling is there to provide context only. */ | |
3019eac3 | 9526 | |
f4dc4d17 DE |
9527 | static void |
9528 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9529 | { | |
9530 | struct die_info *child_die; | |
3019eac3 | 9531 | |
f4dc4d17 DE |
9532 | prepare_one_comp_unit (cu, die, language_minimal); |
9533 | ||
9534 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
9535 | We do this before processing child DIEs, so that the line header table | |
9536 | is available for DW_AT_decl_file. */ | |
9537 | setup_type_unit_groups (die, cu); | |
9538 | ||
9539 | if (die->child != NULL) | |
9540 | { | |
9541 | child_die = die->child; | |
9542 | while (child_die && child_die->tag) | |
9543 | { | |
9544 | process_die (child_die, cu); | |
9545 | child_die = sibling_die (child_die); | |
9546 | } | |
9547 | } | |
3019eac3 DE |
9548 | } |
9549 | \f | |
80626a55 DE |
9550 | /* DWO/DWP files. |
9551 | ||
9552 | http://gcc.gnu.org/wiki/DebugFission | |
9553 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
9554 | ||
9555 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
9556 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
9557 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
9558 | |
9559 | static hashval_t | |
9560 | hash_dwo_file (const void *item) | |
9561 | { | |
9a3c8263 | 9562 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 9563 | hashval_t hash; |
3019eac3 | 9564 | |
a2ce51a0 DE |
9565 | hash = htab_hash_string (dwo_file->dwo_name); |
9566 | if (dwo_file->comp_dir != NULL) | |
9567 | hash += htab_hash_string (dwo_file->comp_dir); | |
9568 | return hash; | |
3019eac3 DE |
9569 | } |
9570 | ||
9571 | static int | |
9572 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
9573 | { | |
9a3c8263 SM |
9574 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
9575 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 9576 | |
a2ce51a0 DE |
9577 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
9578 | return 0; | |
9579 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
9580 | return lhs->comp_dir == rhs->comp_dir; | |
9581 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
9582 | } |
9583 | ||
9584 | /* Allocate a hash table for DWO files. */ | |
9585 | ||
9586 | static htab_t | |
9587 | allocate_dwo_file_hash_table (void) | |
9588 | { | |
9589 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9590 | ||
9591 | return htab_create_alloc_ex (41, | |
9592 | hash_dwo_file, | |
9593 | eq_dwo_file, | |
9594 | NULL, | |
9595 | &objfile->objfile_obstack, | |
9596 | hashtab_obstack_allocate, | |
9597 | dummy_obstack_deallocate); | |
9598 | } | |
9599 | ||
80626a55 DE |
9600 | /* Lookup DWO file DWO_NAME. */ |
9601 | ||
9602 | static void ** | |
0ac5b59e | 9603 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
9604 | { |
9605 | struct dwo_file find_entry; | |
9606 | void **slot; | |
9607 | ||
9608 | if (dwarf2_per_objfile->dwo_files == NULL) | |
9609 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
9610 | ||
9611 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
9612 | find_entry.dwo_name = dwo_name; |
9613 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
9614 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
9615 | ||
9616 | return slot; | |
9617 | } | |
9618 | ||
3019eac3 DE |
9619 | static hashval_t |
9620 | hash_dwo_unit (const void *item) | |
9621 | { | |
9a3c8263 | 9622 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
9623 | |
9624 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
9625 | return dwo_unit->signature; | |
9626 | } | |
9627 | ||
9628 | static int | |
9629 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
9630 | { | |
9a3c8263 SM |
9631 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
9632 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
9633 | |
9634 | /* The signature is assumed to be unique within the DWO file. | |
9635 | So while object file CU dwo_id's always have the value zero, | |
9636 | that's OK, assuming each object file DWO file has only one CU, | |
9637 | and that's the rule for now. */ | |
9638 | return lhs->signature == rhs->signature; | |
9639 | } | |
9640 | ||
9641 | /* Allocate a hash table for DWO CUs,TUs. | |
9642 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
9643 | ||
9644 | static htab_t | |
9645 | allocate_dwo_unit_table (struct objfile *objfile) | |
9646 | { | |
9647 | /* Start out with a pretty small number. | |
9648 | Generally DWO files contain only one CU and maybe some TUs. */ | |
9649 | return htab_create_alloc_ex (3, | |
9650 | hash_dwo_unit, | |
9651 | eq_dwo_unit, | |
9652 | NULL, | |
9653 | &objfile->objfile_obstack, | |
9654 | hashtab_obstack_allocate, | |
9655 | dummy_obstack_deallocate); | |
9656 | } | |
9657 | ||
80626a55 | 9658 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 9659 | |
19c3d4c9 | 9660 | struct create_dwo_cu_data |
3019eac3 DE |
9661 | { |
9662 | struct dwo_file *dwo_file; | |
19c3d4c9 | 9663 | struct dwo_unit dwo_unit; |
3019eac3 DE |
9664 | }; |
9665 | ||
19c3d4c9 | 9666 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
9667 | |
9668 | static void | |
19c3d4c9 DE |
9669 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
9670 | const gdb_byte *info_ptr, | |
9671 | struct die_info *comp_unit_die, | |
9672 | int has_children, | |
9673 | void *datap) | |
3019eac3 DE |
9674 | { |
9675 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 9676 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 9677 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 9678 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 9679 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 9680 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 9681 | struct attribute *attr; |
3019eac3 DE |
9682 | |
9683 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
9684 | if (attr == NULL) | |
9685 | { | |
19c3d4c9 DE |
9686 | complaint (&symfile_complaints, |
9687 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
9688 | " its dwo_id [in module %s]"), | |
9c541725 | 9689 | to_underlying (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
9690 | return; |
9691 | } | |
9692 | ||
3019eac3 DE |
9693 | dwo_unit->dwo_file = dwo_file; |
9694 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 9695 | dwo_unit->section = section; |
9c541725 | 9696 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
9697 | dwo_unit->length = cu->per_cu->length; |
9698 | ||
b4f54984 | 9699 | if (dwarf_read_debug) |
4031ecc5 | 9700 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9c541725 PA |
9701 | to_underlying (sect_off), |
9702 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
9703 | } |
9704 | ||
19c3d4c9 DE |
9705 | /* Create the dwo_unit for the lone CU in DWO_FILE. |
9706 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 | 9707 | |
19c3d4c9 DE |
9708 | static struct dwo_unit * |
9709 | create_dwo_cu (struct dwo_file *dwo_file) | |
3019eac3 DE |
9710 | { |
9711 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9712 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
d521ce57 | 9713 | const gdb_byte *info_ptr, *end_ptr; |
19c3d4c9 DE |
9714 | struct create_dwo_cu_data create_dwo_cu_data; |
9715 | struct dwo_unit *dwo_unit; | |
3019eac3 DE |
9716 | |
9717 | dwarf2_read_section (objfile, section); | |
9718 | info_ptr = section->buffer; | |
9719 | ||
9720 | if (info_ptr == NULL) | |
9721 | return NULL; | |
9722 | ||
b4f54984 | 9723 | if (dwarf_read_debug) |
19c3d4c9 DE |
9724 | { |
9725 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
a32a8923 DE |
9726 | get_section_name (section), |
9727 | get_section_file_name (section)); | |
19c3d4c9 | 9728 | } |
3019eac3 | 9729 | |
19c3d4c9 DE |
9730 | create_dwo_cu_data.dwo_file = dwo_file; |
9731 | dwo_unit = NULL; | |
3019eac3 DE |
9732 | |
9733 | end_ptr = info_ptr + section->size; | |
9734 | while (info_ptr < end_ptr) | |
9735 | { | |
9736 | struct dwarf2_per_cu_data per_cu; | |
9737 | ||
19c3d4c9 DE |
9738 | memset (&create_dwo_cu_data.dwo_unit, 0, |
9739 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
9740 | memset (&per_cu, 0, sizeof (per_cu)); |
9741 | per_cu.objfile = objfile; | |
9742 | per_cu.is_debug_types = 0; | |
9c541725 | 9743 | per_cu.sect_off = sect_offset (info_ptr - section->buffer); |
8a0459fd | 9744 | per_cu.section = section; |
3019eac3 | 9745 | |
33e80786 | 9746 | init_cutu_and_read_dies_no_follow (&per_cu, dwo_file, |
19c3d4c9 DE |
9747 | create_dwo_cu_reader, |
9748 | &create_dwo_cu_data); | |
9749 | ||
9750 | if (create_dwo_cu_data.dwo_unit.dwo_file != NULL) | |
9751 | { | |
9752 | /* If we've already found one, complain. We only support one | |
9753 | because having more than one requires hacking the dwo_name of | |
9754 | each to match, which is highly unlikely to happen. */ | |
9755 | if (dwo_unit != NULL) | |
9756 | { | |
9757 | complaint (&symfile_complaints, | |
9758 | _("Multiple CUs in DWO file %s [in module %s]"), | |
4262abfb | 9759 | dwo_file->dwo_name, objfile_name (objfile)); |
19c3d4c9 DE |
9760 | break; |
9761 | } | |
9762 | ||
9763 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9764 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
9765 | } | |
3019eac3 DE |
9766 | |
9767 | info_ptr += per_cu.length; | |
9768 | } | |
9769 | ||
19c3d4c9 | 9770 | return dwo_unit; |
3019eac3 DE |
9771 | } |
9772 | ||
80626a55 DE |
9773 | /* DWP file .debug_{cu,tu}_index section format: |
9774 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
9775 | ||
d2415c6c DE |
9776 | DWP Version 1: |
9777 | ||
80626a55 DE |
9778 | Both index sections have the same format, and serve to map a 64-bit |
9779 | signature to a set of section numbers. Each section begins with a header, | |
9780 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
9781 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
9782 | aligned at 8-byte boundaries in the file. | |
9783 | ||
d2415c6c DE |
9784 | The index section header consists of: |
9785 | ||
9786 | V, 32 bit version number | |
9787 | -, 32 bits unused | |
9788 | N, 32 bit number of compilation units or type units in the index | |
9789 | M, 32 bit number of slots in the hash table | |
80626a55 | 9790 | |
d2415c6c | 9791 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 9792 | |
d2415c6c DE |
9793 | The hash table begins at offset 16 in the section, and consists of an array |
9794 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
9795 | order of the application binary). Unused slots in the hash table are 0. | |
9796 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 9797 | |
d2415c6c DE |
9798 | The parallel table begins immediately after the hash table |
9799 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
9800 | array of 32-bit indexes (using the byte order of the application binary), | |
9801 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
9802 | table contains a 32-bit index into the pool of section numbers. For unused | |
9803 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 9804 | |
73869dc2 DE |
9805 | The pool of section numbers begins immediately following the hash table |
9806 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
9807 | section numbers consists of an array of 32-bit words (using the byte order | |
9808 | of the application binary). Each item in the array is indexed starting | |
9809 | from 0. The hash table entry provides the index of the first section | |
9810 | number in the set. Additional section numbers in the set follow, and the | |
9811 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
9812 | ||
9813 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
9814 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
9815 | be the second entry. Other members of the set may follow in any order. | |
9816 | ||
9817 | --- | |
9818 | ||
9819 | DWP Version 2: | |
9820 | ||
9821 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
9822 | and the entries in the index tables are now offsets into these sections. | |
9823 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
9824 | section. | |
9825 | ||
9826 | Index Section Contents: | |
9827 | Header | |
9828 | Hash Table of Signatures dwp_hash_table.hash_table | |
9829 | Parallel Table of Indices dwp_hash_table.unit_table | |
9830 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
9831 | Table of Section Sizes dwp_hash_table.v2.sizes | |
9832 | ||
9833 | The index section header consists of: | |
9834 | ||
9835 | V, 32 bit version number | |
9836 | L, 32 bit number of columns in the table of section offsets | |
9837 | N, 32 bit number of compilation units or type units in the index | |
9838 | M, 32 bit number of slots in the hash table | |
9839 | ||
9840 | Numbers are recorded using the byte order of the application binary. | |
9841 | ||
9842 | The hash table has the same format as version 1. | |
9843 | The parallel table of indices has the same format as version 1, | |
9844 | except that the entries are origin-1 indices into the table of sections | |
9845 | offsets and the table of section sizes. | |
9846 | ||
9847 | The table of offsets begins immediately following the parallel table | |
9848 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
9849 | a two-dimensional array of 32-bit words (using the byte order of the | |
9850 | application binary), with L columns and N+1 rows, in row-major order. | |
9851 | Each row in the array is indexed starting from 0. The first row provides | |
9852 | a key to the remaining rows: each column in this row provides an identifier | |
9853 | for a debug section, and the offsets in the same column of subsequent rows | |
9854 | refer to that section. The section identifiers are: | |
9855 | ||
9856 | DW_SECT_INFO 1 .debug_info.dwo | |
9857 | DW_SECT_TYPES 2 .debug_types.dwo | |
9858 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
9859 | DW_SECT_LINE 4 .debug_line.dwo | |
9860 | DW_SECT_LOC 5 .debug_loc.dwo | |
9861 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
9862 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
9863 | DW_SECT_MACRO 8 .debug_macro.dwo | |
9864 | ||
9865 | The offsets provided by the CU and TU index sections are the base offsets | |
9866 | for the contributions made by each CU or TU to the corresponding section | |
9867 | in the package file. Each CU and TU header contains an abbrev_offset | |
9868 | field, used to find the abbreviations table for that CU or TU within the | |
9869 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
9870 | be interpreted as relative to the base offset given in the index section. | |
9871 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
9872 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
9873 | and offsets into other debug sections obtained from DWARF attributes should | |
9874 | also be interpreted as relative to the corresponding base offset. | |
9875 | ||
9876 | The table of sizes begins immediately following the table of offsets. | |
9877 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
9878 | with L columns and N rows, in row-major order. Each row in the array is | |
9879 | indexed starting from 1 (row 0 is shared by the two tables). | |
9880 | ||
9881 | --- | |
9882 | ||
9883 | Hash table lookup is handled the same in version 1 and 2: | |
9884 | ||
9885 | We assume that N and M will not exceed 2^32 - 1. | |
9886 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
9887 | ||
d2415c6c DE |
9888 | Given a 64-bit compilation unit signature or a type signature S, an entry |
9889 | in the hash table is located as follows: | |
80626a55 | 9890 | |
d2415c6c DE |
9891 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
9892 | the low-order k bits all set to 1. | |
80626a55 | 9893 | |
d2415c6c | 9894 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 9895 | |
d2415c6c DE |
9896 | 3) If the hash table entry at index H matches the signature, use that |
9897 | entry. If the hash table entry at index H is unused (all zeroes), | |
9898 | terminate the search: the signature is not present in the table. | |
80626a55 | 9899 | |
d2415c6c | 9900 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 9901 | |
d2415c6c | 9902 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 9903 | to stop at an unused slot or find the match. */ |
80626a55 DE |
9904 | |
9905 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
9906 | .debug_{info,types}.dwo in DWP_FILE. | |
9907 | Returns NULL if there isn't one. | |
9908 | Note: This function processes DWP files only, not DWO files. */ | |
9909 | ||
9910 | static struct dwp_hash_table * | |
9911 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
9912 | { | |
9913 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9914 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 9915 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 9916 | struct dwarf2_section_info *index; |
73869dc2 | 9917 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
9918 | struct dwp_hash_table *htab; |
9919 | ||
9920 | if (is_debug_types) | |
9921 | index = &dwp_file->sections.tu_index; | |
9922 | else | |
9923 | index = &dwp_file->sections.cu_index; | |
9924 | ||
9925 | if (dwarf2_section_empty_p (index)) | |
9926 | return NULL; | |
9927 | dwarf2_read_section (objfile, index); | |
9928 | ||
9929 | index_ptr = index->buffer; | |
9930 | index_end = index_ptr + index->size; | |
9931 | ||
9932 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
9933 | index_ptr += 4; |
9934 | if (version == 2) | |
9935 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
9936 | else | |
9937 | nr_columns = 0; | |
9938 | index_ptr += 4; | |
80626a55 DE |
9939 | nr_units = read_4_bytes (dbfd, index_ptr); |
9940 | index_ptr += 4; | |
9941 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
9942 | index_ptr += 4; | |
9943 | ||
73869dc2 | 9944 | if (version != 1 && version != 2) |
80626a55 | 9945 | { |
21aa081e | 9946 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 9947 | " [in module %s]"), |
21aa081e | 9948 | pulongest (version), dwp_file->name); |
80626a55 DE |
9949 | } |
9950 | if (nr_slots != (nr_slots & -nr_slots)) | |
9951 | { | |
21aa081e | 9952 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 9953 | " is not power of 2 [in module %s]"), |
21aa081e | 9954 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
9955 | } |
9956 | ||
9957 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
9958 | htab->version = version; |
9959 | htab->nr_columns = nr_columns; | |
80626a55 DE |
9960 | htab->nr_units = nr_units; |
9961 | htab->nr_slots = nr_slots; | |
9962 | htab->hash_table = index_ptr; | |
9963 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
9964 | |
9965 | /* Exit early if the table is empty. */ | |
9966 | if (nr_slots == 0 || nr_units == 0 | |
9967 | || (version == 2 && nr_columns == 0)) | |
9968 | { | |
9969 | /* All must be zero. */ | |
9970 | if (nr_slots != 0 || nr_units != 0 | |
9971 | || (version == 2 && nr_columns != 0)) | |
9972 | { | |
9973 | complaint (&symfile_complaints, | |
9974 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
9975 | " all zero [in modules %s]"), | |
9976 | dwp_file->name); | |
9977 | } | |
9978 | return htab; | |
9979 | } | |
9980 | ||
9981 | if (version == 1) | |
9982 | { | |
9983 | htab->section_pool.v1.indices = | |
9984 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9985 | /* It's harder to decide whether the section is too small in v1. | |
9986 | V1 is deprecated anyway so we punt. */ | |
9987 | } | |
9988 | else | |
9989 | { | |
9990 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9991 | int *ids = htab->section_pool.v2.section_ids; | |
9992 | /* Reverse map for error checking. */ | |
9993 | int ids_seen[DW_SECT_MAX + 1]; | |
9994 | int i; | |
9995 | ||
9996 | if (nr_columns < 2) | |
9997 | { | |
9998 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
9999 | " in section table [in module %s]"), | |
10000 | dwp_file->name); | |
10001 | } | |
10002 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
10003 | { | |
10004 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
10005 | " in section table [in module %s]"), | |
10006 | dwp_file->name); | |
10007 | } | |
10008 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
10009 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
10010 | for (i = 0; i < nr_columns; ++i) | |
10011 | { | |
10012 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
10013 | ||
10014 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
10015 | { | |
10016 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
10017 | " in section table [in module %s]"), | |
10018 | id, dwp_file->name); | |
10019 | } | |
10020 | if (ids_seen[id] != -1) | |
10021 | { | |
10022 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
10023 | " id %d in section table [in module %s]"), | |
10024 | id, dwp_file->name); | |
10025 | } | |
10026 | ids_seen[id] = i; | |
10027 | ids[i] = id; | |
10028 | } | |
10029 | /* Must have exactly one info or types section. */ | |
10030 | if (((ids_seen[DW_SECT_INFO] != -1) | |
10031 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
10032 | != 1) | |
10033 | { | |
10034 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
10035 | " DWO info/types section [in module %s]"), | |
10036 | dwp_file->name); | |
10037 | } | |
10038 | /* Must have an abbrev section. */ | |
10039 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
10040 | { | |
10041 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
10042 | " section [in module %s]"), | |
10043 | dwp_file->name); | |
10044 | } | |
10045 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
10046 | htab->section_pool.v2.sizes = | |
10047 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
10048 | * nr_units * nr_columns); | |
10049 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
10050 | * nr_units * nr_columns)) | |
10051 | > index_end) | |
10052 | { | |
10053 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
10054 | " [in module %s]"), | |
10055 | dwp_file->name); | |
10056 | } | |
10057 | } | |
80626a55 DE |
10058 | |
10059 | return htab; | |
10060 | } | |
10061 | ||
10062 | /* Update SECTIONS with the data from SECTP. | |
10063 | ||
10064 | This function is like the other "locate" section routines that are | |
10065 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 10066 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
10067 | |
10068 | The result is non-zero for success, or zero if an error was found. */ | |
10069 | ||
10070 | static int | |
73869dc2 DE |
10071 | locate_v1_virtual_dwo_sections (asection *sectp, |
10072 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
10073 | { |
10074 | const struct dwop_section_names *names = &dwop_section_names; | |
10075 | ||
10076 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10077 | { | |
10078 | /* There can be only one. */ | |
049412e3 | 10079 | if (sections->abbrev.s.section != NULL) |
80626a55 | 10080 | return 0; |
049412e3 | 10081 | sections->abbrev.s.section = sectp; |
80626a55 DE |
10082 | sections->abbrev.size = bfd_get_section_size (sectp); |
10083 | } | |
10084 | else if (section_is_p (sectp->name, &names->info_dwo) | |
10085 | || section_is_p (sectp->name, &names->types_dwo)) | |
10086 | { | |
10087 | /* There can be only one. */ | |
049412e3 | 10088 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 10089 | return 0; |
049412e3 | 10090 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
10091 | sections->info_or_types.size = bfd_get_section_size (sectp); |
10092 | } | |
10093 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10094 | { | |
10095 | /* There can be only one. */ | |
049412e3 | 10096 | if (sections->line.s.section != NULL) |
80626a55 | 10097 | return 0; |
049412e3 | 10098 | sections->line.s.section = sectp; |
80626a55 DE |
10099 | sections->line.size = bfd_get_section_size (sectp); |
10100 | } | |
10101 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10102 | { | |
10103 | /* There can be only one. */ | |
049412e3 | 10104 | if (sections->loc.s.section != NULL) |
80626a55 | 10105 | return 0; |
049412e3 | 10106 | sections->loc.s.section = sectp; |
80626a55 DE |
10107 | sections->loc.size = bfd_get_section_size (sectp); |
10108 | } | |
10109 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10110 | { | |
10111 | /* There can be only one. */ | |
049412e3 | 10112 | if (sections->macinfo.s.section != NULL) |
80626a55 | 10113 | return 0; |
049412e3 | 10114 | sections->macinfo.s.section = sectp; |
80626a55 DE |
10115 | sections->macinfo.size = bfd_get_section_size (sectp); |
10116 | } | |
10117 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10118 | { | |
10119 | /* There can be only one. */ | |
049412e3 | 10120 | if (sections->macro.s.section != NULL) |
80626a55 | 10121 | return 0; |
049412e3 | 10122 | sections->macro.s.section = sectp; |
80626a55 DE |
10123 | sections->macro.size = bfd_get_section_size (sectp); |
10124 | } | |
10125 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10126 | { | |
10127 | /* There can be only one. */ | |
049412e3 | 10128 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 10129 | return 0; |
049412e3 | 10130 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
10131 | sections->str_offsets.size = bfd_get_section_size (sectp); |
10132 | } | |
10133 | else | |
10134 | { | |
10135 | /* No other kind of section is valid. */ | |
10136 | return 0; | |
10137 | } | |
10138 | ||
10139 | return 1; | |
10140 | } | |
10141 | ||
73869dc2 DE |
10142 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
10143 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
10144 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
10145 | This is for DWP version 1 files. */ | |
80626a55 DE |
10146 | |
10147 | static struct dwo_unit * | |
73869dc2 DE |
10148 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
10149 | uint32_t unit_index, | |
10150 | const char *comp_dir, | |
10151 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
10152 | { |
10153 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
10154 | const struct dwp_hash_table *dwp_htab = |
10155 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
10156 | bfd *dbfd = dwp_file->dbfd; |
10157 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10158 | struct dwo_file *dwo_file; | |
10159 | struct dwo_unit *dwo_unit; | |
73869dc2 | 10160 | struct virtual_v1_dwo_sections sections; |
80626a55 DE |
10161 | void **dwo_file_slot; |
10162 | char *virtual_dwo_name; | |
80626a55 DE |
10163 | struct cleanup *cleanups; |
10164 | int i; | |
10165 | ||
73869dc2 DE |
10166 | gdb_assert (dwp_file->version == 1); |
10167 | ||
b4f54984 | 10168 | if (dwarf_read_debug) |
80626a55 | 10169 | { |
73869dc2 | 10170 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 10171 | kind, |
73869dc2 | 10172 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
10173 | dwp_file->name); |
10174 | } | |
10175 | ||
19ac8c2e | 10176 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
10177 | Put a limit on the number of sections we look for so that bad data |
10178 | doesn't cause us to loop forever. */ | |
10179 | ||
73869dc2 | 10180 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
10181 | (1 /* .debug_info or .debug_types */ \ |
10182 | + 1 /* .debug_abbrev */ \ | |
10183 | + 1 /* .debug_line */ \ | |
10184 | + 1 /* .debug_loc */ \ | |
10185 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 10186 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
10187 | + 1 /* trailing zero */) |
10188 | ||
10189 | memset (§ions, 0, sizeof (sections)); | |
10190 | cleanups = make_cleanup (null_cleanup, 0); | |
10191 | ||
73869dc2 | 10192 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
10193 | { |
10194 | asection *sectp; | |
10195 | uint32_t section_nr = | |
10196 | read_4_bytes (dbfd, | |
73869dc2 DE |
10197 | dwp_htab->section_pool.v1.indices |
10198 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
10199 | |
10200 | if (section_nr == 0) | |
10201 | break; | |
10202 | if (section_nr >= dwp_file->num_sections) | |
10203 | { | |
10204 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
10205 | " [in module %s]"), | |
10206 | dwp_file->name); | |
10207 | } | |
10208 | ||
10209 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 10210 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
10211 | { |
10212 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
10213 | " [in module %s]"), | |
10214 | dwp_file->name); | |
10215 | } | |
10216 | } | |
10217 | ||
10218 | if (i < 2 | |
a32a8923 DE |
10219 | || dwarf2_section_empty_p (§ions.info_or_types) |
10220 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
10221 | { |
10222 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
10223 | " [in module %s]"), | |
10224 | dwp_file->name); | |
10225 | } | |
73869dc2 | 10226 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
10227 | { |
10228 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
10229 | " [in module %s]"), | |
10230 | dwp_file->name); | |
10231 | } | |
10232 | ||
10233 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10234 | have dwo_unit "live" in that. At least for now. | |
10235 | ||
10236 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 10237 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
10238 | file, we can combine them back into a virtual DWO file to save space |
10239 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
10240 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
10241 | ||
2792b94d PM |
10242 | virtual_dwo_name = |
10243 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
a32a8923 DE |
10244 | get_section_id (§ions.abbrev), |
10245 | get_section_id (§ions.line), | |
10246 | get_section_id (§ions.loc), | |
10247 | get_section_id (§ions.str_offsets)); | |
80626a55 DE |
10248 | make_cleanup (xfree, virtual_dwo_name); |
10249 | /* Can we use an existing virtual DWO file? */ | |
0ac5b59e | 10250 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); |
80626a55 DE |
10251 | /* Create one if necessary. */ |
10252 | if (*dwo_file_slot == NULL) | |
10253 | { | |
b4f54984 | 10254 | if (dwarf_read_debug) |
80626a55 DE |
10255 | { |
10256 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10257 | virtual_dwo_name); | |
10258 | } | |
10259 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
10260 | dwo_file->dwo_name |
10261 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10262 | virtual_dwo_name, | |
10263 | strlen (virtual_dwo_name)); | |
0ac5b59e | 10264 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
10265 | dwo_file->sections.abbrev = sections.abbrev; |
10266 | dwo_file->sections.line = sections.line; | |
10267 | dwo_file->sections.loc = sections.loc; | |
10268 | dwo_file->sections.macinfo = sections.macinfo; | |
10269 | dwo_file->sections.macro = sections.macro; | |
10270 | dwo_file->sections.str_offsets = sections.str_offsets; | |
10271 | /* The "str" section is global to the entire DWP file. */ | |
10272 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 10273 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
10274 | there's no need to record it in dwo_file. |
10275 | Also, we can't simply record type sections in dwo_file because | |
10276 | we record a pointer into the vector in dwo_unit. As we collect more | |
10277 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
10278 | for it, invalidating all copies of pointers into the previous |
10279 | contents. */ | |
80626a55 DE |
10280 | *dwo_file_slot = dwo_file; |
10281 | } | |
10282 | else | |
10283 | { | |
b4f54984 | 10284 | if (dwarf_read_debug) |
80626a55 DE |
10285 | { |
10286 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10287 | virtual_dwo_name); | |
10288 | } | |
9a3c8263 | 10289 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 DE |
10290 | } |
10291 | do_cleanups (cleanups); | |
10292 | ||
10293 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10294 | dwo_unit->dwo_file = dwo_file; | |
10295 | dwo_unit->signature = signature; | |
8d749320 SM |
10296 | dwo_unit->section = |
10297 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 10298 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 10299 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
10300 | |
10301 | return dwo_unit; | |
10302 | } | |
10303 | ||
73869dc2 DE |
10304 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
10305 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
10306 | piece within that section used by a TU/CU, return a virtual section | |
10307 | of just that piece. */ | |
10308 | ||
10309 | static struct dwarf2_section_info | |
10310 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
10311 | bfd_size_type offset, bfd_size_type size) | |
10312 | { | |
10313 | struct dwarf2_section_info result; | |
10314 | asection *sectp; | |
10315 | ||
10316 | gdb_assert (section != NULL); | |
10317 | gdb_assert (!section->is_virtual); | |
10318 | ||
10319 | memset (&result, 0, sizeof (result)); | |
10320 | result.s.containing_section = section; | |
10321 | result.is_virtual = 1; | |
10322 | ||
10323 | if (size == 0) | |
10324 | return result; | |
10325 | ||
10326 | sectp = get_section_bfd_section (section); | |
10327 | ||
10328 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
10329 | bounds of the real section. This is a pretty-rare event, so just | |
10330 | flag an error (easier) instead of a warning and trying to cope. */ | |
10331 | if (sectp == NULL | |
10332 | || offset + size > bfd_get_section_size (sectp)) | |
10333 | { | |
10334 | bfd *abfd = sectp->owner; | |
10335 | ||
10336 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" | |
10337 | " in section %s [in module %s]"), | |
10338 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
10339 | objfile_name (dwarf2_per_objfile->objfile)); | |
10340 | } | |
10341 | ||
10342 | result.virtual_offset = offset; | |
10343 | result.size = size; | |
10344 | return result; | |
10345 | } | |
10346 | ||
10347 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
10348 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
10349 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
10350 | This is for DWP version 2 files. */ | |
10351 | ||
10352 | static struct dwo_unit * | |
10353 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
10354 | uint32_t unit_index, | |
10355 | const char *comp_dir, | |
10356 | ULONGEST signature, int is_debug_types) | |
10357 | { | |
10358 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10359 | const struct dwp_hash_table *dwp_htab = | |
10360 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10361 | bfd *dbfd = dwp_file->dbfd; | |
10362 | const char *kind = is_debug_types ? "TU" : "CU"; | |
10363 | struct dwo_file *dwo_file; | |
10364 | struct dwo_unit *dwo_unit; | |
10365 | struct virtual_v2_dwo_sections sections; | |
10366 | void **dwo_file_slot; | |
10367 | char *virtual_dwo_name; | |
73869dc2 DE |
10368 | struct cleanup *cleanups; |
10369 | int i; | |
10370 | ||
10371 | gdb_assert (dwp_file->version == 2); | |
10372 | ||
b4f54984 | 10373 | if (dwarf_read_debug) |
73869dc2 DE |
10374 | { |
10375 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
10376 | kind, | |
10377 | pulongest (unit_index), hex_string (signature), | |
10378 | dwp_file->name); | |
10379 | } | |
10380 | ||
10381 | /* Fetch the section offsets of this DWO unit. */ | |
10382 | ||
10383 | memset (§ions, 0, sizeof (sections)); | |
10384 | cleanups = make_cleanup (null_cleanup, 0); | |
10385 | ||
10386 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
10387 | { | |
10388 | uint32_t offset = read_4_bytes (dbfd, | |
10389 | dwp_htab->section_pool.v2.offsets | |
10390 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10391 | + i) | |
10392 | * sizeof (uint32_t))); | |
10393 | uint32_t size = read_4_bytes (dbfd, | |
10394 | dwp_htab->section_pool.v2.sizes | |
10395 | + (((unit_index - 1) * dwp_htab->nr_columns | |
10396 | + i) | |
10397 | * sizeof (uint32_t))); | |
10398 | ||
10399 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
10400 | { | |
10401 | case DW_SECT_INFO: | |
10402 | case DW_SECT_TYPES: | |
10403 | sections.info_or_types_offset = offset; | |
10404 | sections.info_or_types_size = size; | |
10405 | break; | |
10406 | case DW_SECT_ABBREV: | |
10407 | sections.abbrev_offset = offset; | |
10408 | sections.abbrev_size = size; | |
10409 | break; | |
10410 | case DW_SECT_LINE: | |
10411 | sections.line_offset = offset; | |
10412 | sections.line_size = size; | |
10413 | break; | |
10414 | case DW_SECT_LOC: | |
10415 | sections.loc_offset = offset; | |
10416 | sections.loc_size = size; | |
10417 | break; | |
10418 | case DW_SECT_STR_OFFSETS: | |
10419 | sections.str_offsets_offset = offset; | |
10420 | sections.str_offsets_size = size; | |
10421 | break; | |
10422 | case DW_SECT_MACINFO: | |
10423 | sections.macinfo_offset = offset; | |
10424 | sections.macinfo_size = size; | |
10425 | break; | |
10426 | case DW_SECT_MACRO: | |
10427 | sections.macro_offset = offset; | |
10428 | sections.macro_size = size; | |
10429 | break; | |
10430 | } | |
10431 | } | |
10432 | ||
10433 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
10434 | have dwo_unit "live" in that. At least for now. | |
10435 | ||
10436 | The DWP file can be made up of a random collection of CUs and TUs. | |
10437 | However, for each CU + set of TUs that came from the same original DWO | |
10438 | file, we can combine them back into a virtual DWO file to save space | |
10439 | (fewer struct dwo_file objects to allocate). Remember that for really | |
10440 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
10441 | ||
10442 | virtual_dwo_name = | |
10443 | xstrprintf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
10444 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
10445 | (long) (sections.line_size ? sections.line_offset : 0), | |
10446 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
10447 | (long) (sections.str_offsets_size | |
10448 | ? sections.str_offsets_offset : 0)); | |
10449 | make_cleanup (xfree, virtual_dwo_name); | |
10450 | /* Can we use an existing virtual DWO file? */ | |
10451 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); | |
10452 | /* Create one if necessary. */ | |
10453 | if (*dwo_file_slot == NULL) | |
10454 | { | |
b4f54984 | 10455 | if (dwarf_read_debug) |
73869dc2 DE |
10456 | { |
10457 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
10458 | virtual_dwo_name); | |
10459 | } | |
10460 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
10461 | dwo_file->dwo_name |
10462 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10463 | virtual_dwo_name, | |
10464 | strlen (virtual_dwo_name)); | |
73869dc2 DE |
10465 | dwo_file->comp_dir = comp_dir; |
10466 | dwo_file->sections.abbrev = | |
10467 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
10468 | sections.abbrev_offset, sections.abbrev_size); | |
10469 | dwo_file->sections.line = | |
10470 | create_dwp_v2_section (&dwp_file->sections.line, | |
10471 | sections.line_offset, sections.line_size); | |
10472 | dwo_file->sections.loc = | |
10473 | create_dwp_v2_section (&dwp_file->sections.loc, | |
10474 | sections.loc_offset, sections.loc_size); | |
10475 | dwo_file->sections.macinfo = | |
10476 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
10477 | sections.macinfo_offset, sections.macinfo_size); | |
10478 | dwo_file->sections.macro = | |
10479 | create_dwp_v2_section (&dwp_file->sections.macro, | |
10480 | sections.macro_offset, sections.macro_size); | |
10481 | dwo_file->sections.str_offsets = | |
10482 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
10483 | sections.str_offsets_offset, | |
10484 | sections.str_offsets_size); | |
10485 | /* The "str" section is global to the entire DWP file. */ | |
10486 | dwo_file->sections.str = dwp_file->sections.str; | |
10487 | /* The info or types section is assigned below to dwo_unit, | |
10488 | there's no need to record it in dwo_file. | |
10489 | Also, we can't simply record type sections in dwo_file because | |
10490 | we record a pointer into the vector in dwo_unit. As we collect more | |
10491 | types we'll grow the vector and eventually have to reallocate space | |
10492 | for it, invalidating all copies of pointers into the previous | |
10493 | contents. */ | |
10494 | *dwo_file_slot = dwo_file; | |
10495 | } | |
10496 | else | |
10497 | { | |
b4f54984 | 10498 | if (dwarf_read_debug) |
73869dc2 DE |
10499 | { |
10500 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10501 | virtual_dwo_name); | |
10502 | } | |
9a3c8263 | 10503 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 DE |
10504 | } |
10505 | do_cleanups (cleanups); | |
10506 | ||
10507 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10508 | dwo_unit->dwo_file = dwo_file; | |
10509 | dwo_unit->signature = signature; | |
8d749320 SM |
10510 | dwo_unit->section = |
10511 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
73869dc2 DE |
10512 | *dwo_unit->section = create_dwp_v2_section (is_debug_types |
10513 | ? &dwp_file->sections.types | |
10514 | : &dwp_file->sections.info, | |
10515 | sections.info_or_types_offset, | |
10516 | sections.info_or_types_size); | |
10517 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
10518 | ||
10519 | return dwo_unit; | |
10520 | } | |
10521 | ||
57d63ce2 DE |
10522 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
10523 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
10524 | |
10525 | static struct dwo_unit * | |
57d63ce2 DE |
10526 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
10527 | ULONGEST signature, int is_debug_types) | |
80626a55 | 10528 | { |
57d63ce2 DE |
10529 | const struct dwp_hash_table *dwp_htab = |
10530 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 10531 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 10532 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
10533 | uint32_t hash = signature & mask; |
10534 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
10535 | unsigned int i; | |
10536 | void **slot; | |
870f88f7 | 10537 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
10538 | |
10539 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
10540 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
10541 | slot = htab_find_slot (is_debug_types |
10542 | ? dwp_file->loaded_tus | |
10543 | : dwp_file->loaded_cus, | |
10544 | &find_dwo_cu, INSERT); | |
80626a55 DE |
10545 | |
10546 | if (*slot != NULL) | |
9a3c8263 | 10547 | return (struct dwo_unit *) *slot; |
80626a55 DE |
10548 | |
10549 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 10550 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
10551 | { |
10552 | ULONGEST signature_in_table; | |
10553 | ||
10554 | signature_in_table = | |
57d63ce2 | 10555 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
10556 | if (signature_in_table == signature) |
10557 | { | |
57d63ce2 DE |
10558 | uint32_t unit_index = |
10559 | read_4_bytes (dbfd, | |
10560 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 10561 | |
73869dc2 DE |
10562 | if (dwp_file->version == 1) |
10563 | { | |
10564 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
10565 | comp_dir, signature, | |
10566 | is_debug_types); | |
10567 | } | |
10568 | else | |
10569 | { | |
10570 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
10571 | comp_dir, signature, | |
10572 | is_debug_types); | |
10573 | } | |
9a3c8263 | 10574 | return (struct dwo_unit *) *slot; |
80626a55 DE |
10575 | } |
10576 | if (signature_in_table == 0) | |
10577 | return NULL; | |
10578 | hash = (hash + hash2) & mask; | |
10579 | } | |
10580 | ||
10581 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
10582 | " [in module %s]"), | |
10583 | dwp_file->name); | |
10584 | } | |
10585 | ||
ab5088bf | 10586 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
10587 | Open the file specified by FILE_NAME and hand it off to BFD for |
10588 | preliminary analysis. Return a newly initialized bfd *, which | |
10589 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 10590 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
10591 | SEARCH_CWD is true if the current directory is to be searched. |
10592 | It will be searched before debug-file-directory. | |
13aaf454 DE |
10593 | If successful, the file is added to the bfd include table of the |
10594 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 10595 | If unable to find/open the file, return NULL. |
3019eac3 DE |
10596 | NOTE: This function is derived from symfile_bfd_open. */ |
10597 | ||
192b62ce | 10598 | static gdb_bfd_ref_ptr |
6ac97d4c | 10599 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 10600 | { |
80626a55 | 10601 | int desc, flags; |
3019eac3 | 10602 | char *absolute_name; |
9c02c129 DE |
10603 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
10604 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
10605 | to debug_file_directory. */ | |
10606 | char *search_path; | |
10607 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
10608 | ||
6ac97d4c DE |
10609 | if (search_cwd) |
10610 | { | |
10611 | if (*debug_file_directory != '\0') | |
10612 | search_path = concat (".", dirname_separator_string, | |
b36cec19 | 10613 | debug_file_directory, (char *) NULL); |
6ac97d4c DE |
10614 | else |
10615 | search_path = xstrdup ("."); | |
10616 | } | |
9c02c129 | 10617 | else |
6ac97d4c | 10618 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 10619 | |
492c0ab7 | 10620 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
10621 | if (is_dwp) |
10622 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 10623 | desc = openp (search_path, flags, file_name, |
3019eac3 | 10624 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 10625 | xfree (search_path); |
3019eac3 DE |
10626 | if (desc < 0) |
10627 | return NULL; | |
10628 | ||
192b62ce | 10629 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name, gnutarget, desc)); |
a4453b7e | 10630 | xfree (absolute_name); |
9c02c129 DE |
10631 | if (sym_bfd == NULL) |
10632 | return NULL; | |
192b62ce | 10633 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 10634 | |
192b62ce TT |
10635 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
10636 | return NULL; | |
3019eac3 | 10637 | |
13aaf454 DE |
10638 | /* Success. Record the bfd as having been included by the objfile's bfd. |
10639 | This is important because things like demangled_names_hash lives in the | |
10640 | objfile's per_bfd space and may have references to things like symbol | |
10641 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 10642 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 10643 | |
3019eac3 DE |
10644 | return sym_bfd; |
10645 | } | |
10646 | ||
ab5088bf | 10647 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
10648 | COMP_DIR is the DW_AT_comp_dir attribute. |
10649 | The result is the bfd handle of the file. | |
10650 | If there is a problem finding or opening the file, return NULL. | |
10651 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10652 | same as symfile_bfd_open. */ | |
10653 | ||
192b62ce | 10654 | static gdb_bfd_ref_ptr |
ab5088bf | 10655 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 | 10656 | { |
80626a55 | 10657 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 10658 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
10659 | |
10660 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
10661 | ||
10662 | if (comp_dir != NULL) | |
10663 | { | |
b36cec19 PA |
10664 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
10665 | file_name, (char *) NULL); | |
3019eac3 DE |
10666 | |
10667 | /* NOTE: If comp_dir is a relative path, this will also try the | |
10668 | search path, which seems useful. */ | |
192b62ce TT |
10669 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (path_to_try, 0 /*is_dwp*/, |
10670 | 1 /*search_cwd*/)); | |
3019eac3 DE |
10671 | xfree (path_to_try); |
10672 | if (abfd != NULL) | |
10673 | return abfd; | |
10674 | } | |
10675 | ||
10676 | /* That didn't work, try debug-file-directory, which, despite its name, | |
10677 | is a list of paths. */ | |
10678 | ||
10679 | if (*debug_file_directory == '\0') | |
10680 | return NULL; | |
10681 | ||
6ac97d4c | 10682 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10683 | } |
10684 | ||
80626a55 DE |
10685 | /* This function is mapped across the sections and remembers the offset and |
10686 | size of each of the DWO debugging sections we are interested in. */ | |
10687 | ||
10688 | static void | |
10689 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
10690 | { | |
9a3c8263 | 10691 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
10692 | const struct dwop_section_names *names = &dwop_section_names; |
10693 | ||
10694 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10695 | { | |
049412e3 | 10696 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
10697 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
10698 | } | |
10699 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10700 | { | |
049412e3 | 10701 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
10702 | dwo_sections->info.size = bfd_get_section_size (sectp); |
10703 | } | |
10704 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10705 | { | |
049412e3 | 10706 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
10707 | dwo_sections->line.size = bfd_get_section_size (sectp); |
10708 | } | |
10709 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10710 | { | |
049412e3 | 10711 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
10712 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
10713 | } | |
10714 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10715 | { | |
049412e3 | 10716 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
10717 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
10718 | } | |
10719 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10720 | { | |
049412e3 | 10721 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
10722 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
10723 | } | |
10724 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
10725 | { | |
049412e3 | 10726 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
10727 | dwo_sections->str.size = bfd_get_section_size (sectp); |
10728 | } | |
10729 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10730 | { | |
049412e3 | 10731 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
10732 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
10733 | } | |
10734 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10735 | { | |
10736 | struct dwarf2_section_info type_section; | |
10737 | ||
10738 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 10739 | type_section.s.section = sectp; |
80626a55 DE |
10740 | type_section.size = bfd_get_section_size (sectp); |
10741 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
10742 | &type_section); | |
10743 | } | |
10744 | } | |
10745 | ||
ab5088bf | 10746 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 10747 | by PER_CU. This is for the non-DWP case. |
80626a55 | 10748 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
10749 | |
10750 | static struct dwo_file * | |
0ac5b59e DE |
10751 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
10752 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
10753 | { |
10754 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 10755 | struct dwo_file *dwo_file; |
3019eac3 DE |
10756 | struct cleanup *cleanups; |
10757 | ||
192b62ce | 10758 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwo_name, comp_dir)); |
80626a55 DE |
10759 | if (dbfd == NULL) |
10760 | { | |
b4f54984 | 10761 | if (dwarf_read_debug) |
80626a55 DE |
10762 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
10763 | return NULL; | |
10764 | } | |
10765 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10766 | dwo_file->dwo_name = dwo_name; |
10767 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 10768 | dwo_file->dbfd = dbfd.release (); |
3019eac3 DE |
10769 | |
10770 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
10771 | ||
192b62ce TT |
10772 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
10773 | &dwo_file->sections); | |
3019eac3 | 10774 | |
19c3d4c9 | 10775 | dwo_file->cu = create_dwo_cu (dwo_file); |
3019eac3 | 10776 | |
78d4d2c5 JK |
10777 | create_debug_types_hash_table (dwo_file, dwo_file->sections.types, |
10778 | dwo_file->tus); | |
3019eac3 DE |
10779 | |
10780 | discard_cleanups (cleanups); | |
10781 | ||
b4f54984 | 10782 | if (dwarf_read_debug) |
80626a55 DE |
10783 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
10784 | ||
3019eac3 DE |
10785 | return dwo_file; |
10786 | } | |
10787 | ||
80626a55 | 10788 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
10789 | size of each of the DWP debugging sections common to version 1 and 2 that |
10790 | we are interested in. */ | |
3019eac3 | 10791 | |
80626a55 | 10792 | static void |
73869dc2 DE |
10793 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
10794 | void *dwp_file_ptr) | |
3019eac3 | 10795 | { |
9a3c8263 | 10796 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
10797 | const struct dwop_section_names *names = &dwop_section_names; |
10798 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 10799 | |
80626a55 | 10800 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 10801 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
10802 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
10803 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 10804 | |
80626a55 DE |
10805 | /* Look for specific sections that we need. */ |
10806 | if (section_is_p (sectp->name, &names->str_dwo)) | |
10807 | { | |
049412e3 | 10808 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
10809 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
10810 | } | |
10811 | else if (section_is_p (sectp->name, &names->cu_index)) | |
10812 | { | |
049412e3 | 10813 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
10814 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
10815 | } | |
10816 | else if (section_is_p (sectp->name, &names->tu_index)) | |
10817 | { | |
049412e3 | 10818 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
10819 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
10820 | } | |
10821 | } | |
3019eac3 | 10822 | |
73869dc2 DE |
10823 | /* This function is mapped across the sections and remembers the offset and |
10824 | size of each of the DWP version 2 debugging sections that we are interested | |
10825 | in. This is split into a separate function because we don't know if we | |
10826 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
10827 | ||
10828 | static void | |
10829 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
10830 | { | |
9a3c8263 | 10831 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
10832 | const struct dwop_section_names *names = &dwop_section_names; |
10833 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
10834 | ||
10835 | /* Record the ELF section number for later lookup: this is what the | |
10836 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
10837 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
10838 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
10839 | ||
10840 | /* Look for specific sections that we need. */ | |
10841 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10842 | { | |
049412e3 | 10843 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
10844 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
10845 | } | |
10846 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10847 | { | |
049412e3 | 10848 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
10849 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
10850 | } | |
10851 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10852 | { | |
049412e3 | 10853 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
10854 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
10855 | } | |
10856 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10857 | { | |
049412e3 | 10858 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
10859 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
10860 | } | |
10861 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10862 | { | |
049412e3 | 10863 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
10864 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
10865 | } | |
10866 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10867 | { | |
049412e3 | 10868 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
10869 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
10870 | } | |
10871 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10872 | { | |
049412e3 | 10873 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
10874 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
10875 | } | |
10876 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10877 | { | |
049412e3 | 10878 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
10879 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
10880 | } | |
10881 | } | |
10882 | ||
80626a55 | 10883 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10884 | |
80626a55 DE |
10885 | static hashval_t |
10886 | hash_dwp_loaded_cutus (const void *item) | |
10887 | { | |
9a3c8263 | 10888 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 10889 | |
80626a55 DE |
10890 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
10891 | return dwo_unit->signature; | |
3019eac3 DE |
10892 | } |
10893 | ||
80626a55 | 10894 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10895 | |
80626a55 DE |
10896 | static int |
10897 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 10898 | { |
9a3c8263 SM |
10899 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
10900 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 10901 | |
80626a55 DE |
10902 | return dua->signature == dub->signature; |
10903 | } | |
3019eac3 | 10904 | |
80626a55 | 10905 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10906 | |
80626a55 DE |
10907 | static htab_t |
10908 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
10909 | { | |
10910 | return htab_create_alloc_ex (3, | |
10911 | hash_dwp_loaded_cutus, | |
10912 | eq_dwp_loaded_cutus, | |
10913 | NULL, | |
10914 | &objfile->objfile_obstack, | |
10915 | hashtab_obstack_allocate, | |
10916 | dummy_obstack_deallocate); | |
10917 | } | |
3019eac3 | 10918 | |
ab5088bf DE |
10919 | /* Try to open DWP file FILE_NAME. |
10920 | The result is the bfd handle of the file. | |
10921 | If there is a problem finding or opening the file, return NULL. | |
10922 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10923 | same as symfile_bfd_open. */ | |
10924 | ||
192b62ce | 10925 | static gdb_bfd_ref_ptr |
ab5088bf DE |
10926 | open_dwp_file (const char *file_name) |
10927 | { | |
192b62ce TT |
10928 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (file_name, 1 /*is_dwp*/, |
10929 | 1 /*search_cwd*/)); | |
6ac97d4c DE |
10930 | if (abfd != NULL) |
10931 | return abfd; | |
10932 | ||
10933 | /* Work around upstream bug 15652. | |
10934 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
10935 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
10936 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
10937 | of the executable's path may have discarded the needed info. | |
10938 | [IWBN if the dwp file name was recorded in the executable, akin to | |
10939 | .gnu_debuglink, but that doesn't exist yet.] | |
10940 | Strip the directory from FILE_NAME and search again. */ | |
10941 | if (*debug_file_directory != '\0') | |
10942 | { | |
10943 | /* Don't implicitly search the current directory here. | |
10944 | If the user wants to search "." to handle this case, | |
10945 | it must be added to debug-file-directory. */ | |
10946 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
10947 | 0 /*search_cwd*/); | |
10948 | } | |
10949 | ||
10950 | return NULL; | |
ab5088bf DE |
10951 | } |
10952 | ||
80626a55 DE |
10953 | /* Initialize the use of the DWP file for the current objfile. |
10954 | By convention the name of the DWP file is ${objfile}.dwp. | |
10955 | The result is NULL if it can't be found. */ | |
a766d390 | 10956 | |
80626a55 | 10957 | static struct dwp_file * |
ab5088bf | 10958 | open_and_init_dwp_file (void) |
80626a55 DE |
10959 | { |
10960 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10961 | struct dwp_file *dwp_file; | |
80626a55 | 10962 | |
82bf32bc JK |
10963 | /* Try to find first .dwp for the binary file before any symbolic links |
10964 | resolving. */ | |
6c447423 DE |
10965 | |
10966 | /* If the objfile is a debug file, find the name of the real binary | |
10967 | file and get the name of dwp file from there. */ | |
d721ba37 | 10968 | std::string dwp_name; |
6c447423 DE |
10969 | if (objfile->separate_debug_objfile_backlink != NULL) |
10970 | { | |
10971 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
10972 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 10973 | |
d721ba37 | 10974 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
10975 | } |
10976 | else | |
d721ba37 PA |
10977 | dwp_name = objfile->original_name; |
10978 | ||
10979 | dwp_name += ".dwp"; | |
80626a55 | 10980 | |
d721ba37 | 10981 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwp_name.c_str ())); |
82bf32bc JK |
10982 | if (dbfd == NULL |
10983 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
10984 | { | |
10985 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
10986 | dwp_name = objfile_name (objfile); |
10987 | dwp_name += ".dwp"; | |
10988 | dbfd = open_dwp_file (dwp_name.c_str ()); | |
82bf32bc JK |
10989 | } |
10990 | ||
80626a55 DE |
10991 | if (dbfd == NULL) |
10992 | { | |
b4f54984 | 10993 | if (dwarf_read_debug) |
d721ba37 | 10994 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
80626a55 | 10995 | return NULL; |
3019eac3 | 10996 | } |
80626a55 | 10997 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
192b62ce TT |
10998 | dwp_file->name = bfd_get_filename (dbfd.get ()); |
10999 | dwp_file->dbfd = dbfd.release (); | |
c906108c | 11000 | |
80626a55 | 11001 | /* +1: section 0 is unused */ |
192b62ce | 11002 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
11003 | dwp_file->elf_sections = |
11004 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
11005 | dwp_file->num_sections, asection *); | |
11006 | ||
192b62ce TT |
11007 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_common_dwp_sections, |
11008 | dwp_file); | |
80626a55 DE |
11009 | |
11010 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
11011 | ||
11012 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
11013 | ||
73869dc2 DE |
11014 | /* The DWP file version is stored in the hash table. Oh well. */ |
11015 | if (dwp_file->cus->version != dwp_file->tus->version) | |
11016 | { | |
11017 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 11018 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 11019 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
11020 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
11021 | " TU version %s [in DWP file %s]"), | |
11022 | pulongest (dwp_file->cus->version), | |
d721ba37 | 11023 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 DE |
11024 | } |
11025 | dwp_file->version = dwp_file->cus->version; | |
11026 | ||
11027 | if (dwp_file->version == 2) | |
192b62ce TT |
11028 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_v2_dwp_sections, |
11029 | dwp_file); | |
73869dc2 | 11030 | |
19ac8c2e DE |
11031 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
11032 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 11033 | |
b4f54984 | 11034 | if (dwarf_read_debug) |
80626a55 DE |
11035 | { |
11036 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
11037 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
11038 | " %s CUs, %s TUs\n", |
11039 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
11040 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
11041 | } |
11042 | ||
11043 | return dwp_file; | |
3019eac3 | 11044 | } |
c906108c | 11045 | |
ab5088bf DE |
11046 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
11047 | ||
11048 | static struct dwp_file * | |
11049 | get_dwp_file (void) | |
11050 | { | |
11051 | if (! dwarf2_per_objfile->dwp_checked) | |
11052 | { | |
11053 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
11054 | dwarf2_per_objfile->dwp_checked = 1; | |
11055 | } | |
11056 | return dwarf2_per_objfile->dwp_file; | |
11057 | } | |
11058 | ||
80626a55 DE |
11059 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
11060 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
11061 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 11062 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
11063 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
11064 | ||
11065 | This is called, for example, when wanting to read a variable with a | |
11066 | complex location. Therefore we don't want to do file i/o for every call. | |
11067 | Therefore we don't want to look for a DWO file on every call. | |
11068 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
11069 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
11070 | for a DWO file. | |
11071 | ||
1c658ad5 | 11072 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 11073 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 11074 | |
3019eac3 | 11075 | static struct dwo_unit * |
80626a55 DE |
11076 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
11077 | const char *dwo_name, const char *comp_dir, | |
11078 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
11079 | { |
11080 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
11081 | const char *kind = is_debug_types ? "TU" : "CU"; |
11082 | void **dwo_file_slot; | |
3019eac3 | 11083 | struct dwo_file *dwo_file; |
80626a55 | 11084 | struct dwp_file *dwp_file; |
cb1df416 | 11085 | |
6a506a2d DE |
11086 | /* First see if there's a DWP file. |
11087 | If we have a DWP file but didn't find the DWO inside it, don't | |
11088 | look for the original DWO file. It makes gdb behave differently | |
11089 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 11090 | |
ab5088bf | 11091 | dwp_file = get_dwp_file (); |
80626a55 | 11092 | if (dwp_file != NULL) |
cf2c3c16 | 11093 | { |
80626a55 DE |
11094 | const struct dwp_hash_table *dwp_htab = |
11095 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
11096 | ||
11097 | if (dwp_htab != NULL) | |
11098 | { | |
11099 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
11100 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
11101 | signature, is_debug_types); | |
80626a55 DE |
11102 | |
11103 | if (dwo_cutu != NULL) | |
11104 | { | |
b4f54984 | 11105 | if (dwarf_read_debug) |
80626a55 DE |
11106 | { |
11107 | fprintf_unfiltered (gdb_stdlog, | |
11108 | "Virtual DWO %s %s found: @%s\n", | |
11109 | kind, hex_string (signature), | |
11110 | host_address_to_string (dwo_cutu)); | |
11111 | } | |
11112 | return dwo_cutu; | |
11113 | } | |
11114 | } | |
11115 | } | |
6a506a2d | 11116 | else |
80626a55 | 11117 | { |
6a506a2d | 11118 | /* No DWP file, look for the DWO file. */ |
80626a55 | 11119 | |
6a506a2d DE |
11120 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
11121 | if (*dwo_file_slot == NULL) | |
80626a55 | 11122 | { |
6a506a2d DE |
11123 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
11124 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 11125 | } |
6a506a2d | 11126 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 11127 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 11128 | |
6a506a2d | 11129 | if (dwo_file != NULL) |
19c3d4c9 | 11130 | { |
6a506a2d DE |
11131 | struct dwo_unit *dwo_cutu = NULL; |
11132 | ||
11133 | if (is_debug_types && dwo_file->tus) | |
11134 | { | |
11135 | struct dwo_unit find_dwo_cutu; | |
11136 | ||
11137 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
11138 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
11139 | dwo_cutu |
11140 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d DE |
11141 | } |
11142 | else if (!is_debug_types && dwo_file->cu) | |
80626a55 | 11143 | { |
6a506a2d DE |
11144 | if (signature == dwo_file->cu->signature) |
11145 | dwo_cutu = dwo_file->cu; | |
11146 | } | |
11147 | ||
11148 | if (dwo_cutu != NULL) | |
11149 | { | |
b4f54984 | 11150 | if (dwarf_read_debug) |
6a506a2d DE |
11151 | { |
11152 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
11153 | kind, dwo_name, hex_string (signature), | |
11154 | host_address_to_string (dwo_cutu)); | |
11155 | } | |
11156 | return dwo_cutu; | |
80626a55 DE |
11157 | } |
11158 | } | |
2e276125 | 11159 | } |
9cdd5dbd | 11160 | |
80626a55 DE |
11161 | /* We didn't find it. This could mean a dwo_id mismatch, or |
11162 | someone deleted the DWO/DWP file, or the search path isn't set up | |
11163 | correctly to find the file. */ | |
11164 | ||
b4f54984 | 11165 | if (dwarf_read_debug) |
80626a55 DE |
11166 | { |
11167 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
11168 | kind, dwo_name, hex_string (signature)); | |
11169 | } | |
3019eac3 | 11170 | |
6656a72d DE |
11171 | /* This is a warning and not a complaint because it can be caused by |
11172 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
11173 | { |
11174 | /* Print the name of the DWP file if we looked there, helps the user | |
11175 | better diagnose the problem. */ | |
11176 | char *dwp_text = NULL; | |
11177 | struct cleanup *cleanups; | |
11178 | ||
11179 | if (dwp_file != NULL) | |
11180 | dwp_text = xstrprintf (" [in DWP file %s]", lbasename (dwp_file->name)); | |
11181 | cleanups = make_cleanup (xfree, dwp_text); | |
11182 | ||
11183 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset 0x%x" | |
11184 | " [in module %s]"), | |
11185 | kind, dwo_name, hex_string (signature), | |
11186 | dwp_text != NULL ? dwp_text : "", | |
11187 | this_unit->is_debug_types ? "TU" : "CU", | |
9c541725 | 11188 | to_underlying (this_unit->sect_off), objfile_name (objfile)); |
43942612 DE |
11189 | |
11190 | do_cleanups (cleanups); | |
11191 | } | |
3019eac3 | 11192 | return NULL; |
5fb290d7 DJ |
11193 | } |
11194 | ||
80626a55 DE |
11195 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
11196 | See lookup_dwo_cutu_unit for details. */ | |
11197 | ||
11198 | static struct dwo_unit * | |
11199 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
11200 | const char *dwo_name, const char *comp_dir, | |
11201 | ULONGEST signature) | |
11202 | { | |
11203 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
11204 | } | |
11205 | ||
11206 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
11207 | See lookup_dwo_cutu_unit for details. */ | |
11208 | ||
11209 | static struct dwo_unit * | |
11210 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
11211 | const char *dwo_name, const char *comp_dir) | |
11212 | { | |
11213 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
11214 | } | |
11215 | ||
89e63ee4 DE |
11216 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
11217 | ||
11218 | static int | |
11219 | queue_and_load_dwo_tu (void **slot, void *info) | |
11220 | { | |
11221 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
11222 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
11223 | ULONGEST signature = dwo_unit->signature; | |
11224 | struct signatured_type *sig_type = | |
11225 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
11226 | ||
11227 | if (sig_type != NULL) | |
11228 | { | |
11229 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
11230 | ||
11231 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
11232 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
11233 | while processing PER_CU. */ | |
11234 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
11235 | load_full_type_unit (sig_cu); | |
11236 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
11237 | } | |
11238 | ||
11239 | return 1; | |
11240 | } | |
11241 | ||
11242 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
11243 | The DWO may have the only definition of the type, though it may not be | |
11244 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
11245 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
11246 | ||
11247 | static void | |
11248 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
11249 | { | |
11250 | struct dwo_unit *dwo_unit; | |
11251 | struct dwo_file *dwo_file; | |
11252 | ||
11253 | gdb_assert (!per_cu->is_debug_types); | |
11254 | gdb_assert (get_dwp_file () == NULL); | |
11255 | gdb_assert (per_cu->cu != NULL); | |
11256 | ||
11257 | dwo_unit = per_cu->cu->dwo_unit; | |
11258 | gdb_assert (dwo_unit != NULL); | |
11259 | ||
11260 | dwo_file = dwo_unit->dwo_file; | |
11261 | if (dwo_file->tus != NULL) | |
11262 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
11263 | } | |
11264 | ||
3019eac3 DE |
11265 | /* Free all resources associated with DWO_FILE. |
11266 | Close the DWO file and munmap the sections. | |
11267 | All memory should be on the objfile obstack. */ | |
348e048f DE |
11268 | |
11269 | static void | |
3019eac3 | 11270 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 11271 | { |
348e048f | 11272 | |
5c6fa7ab | 11273 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 11274 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 11275 | |
3019eac3 DE |
11276 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
11277 | } | |
348e048f | 11278 | |
3019eac3 | 11279 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 11280 | |
3019eac3 DE |
11281 | static void |
11282 | free_dwo_file_cleanup (void *arg) | |
11283 | { | |
11284 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
11285 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 11286 | |
3019eac3 DE |
11287 | free_dwo_file (dwo_file, objfile); |
11288 | } | |
348e048f | 11289 | |
3019eac3 | 11290 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 11291 | |
3019eac3 DE |
11292 | static int |
11293 | free_dwo_file_from_slot (void **slot, void *info) | |
11294 | { | |
11295 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
11296 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 11297 | |
3019eac3 | 11298 | free_dwo_file (dwo_file, objfile); |
348e048f | 11299 | |
3019eac3 DE |
11300 | return 1; |
11301 | } | |
348e048f | 11302 | |
3019eac3 | 11303 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 11304 | |
3019eac3 DE |
11305 | static void |
11306 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
11307 | { | |
11308 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 11309 | } |
3019eac3 DE |
11310 | \f |
11311 | /* Read in various DIEs. */ | |
348e048f | 11312 | |
d389af10 JK |
11313 | /* qsort helper for inherit_abstract_dies. */ |
11314 | ||
11315 | static int | |
11316 | unsigned_int_compar (const void *ap, const void *bp) | |
11317 | { | |
11318 | unsigned int a = *(unsigned int *) ap; | |
11319 | unsigned int b = *(unsigned int *) bp; | |
11320 | ||
11321 | return (a > b) - (b > a); | |
11322 | } | |
11323 | ||
11324 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
11325 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
11326 | already referenced by DW_AT_abstract_origin from the children of the | |
11327 | current DIE. */ | |
d389af10 JK |
11328 | |
11329 | static void | |
11330 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
11331 | { | |
11332 | struct die_info *child_die; | |
11333 | unsigned die_children_count; | |
11334 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
11335 | sect_offset *offsets; |
11336 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
11337 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
11338 | struct die_info *origin_die; | |
11339 | /* Iterator of the ORIGIN_DIE children. */ | |
11340 | struct die_info *origin_child_die; | |
11341 | struct cleanup *cleanups; | |
11342 | struct attribute *attr; | |
cd02d79d PA |
11343 | struct dwarf2_cu *origin_cu; |
11344 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
11345 | |
11346 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11347 | if (!attr) | |
11348 | return; | |
11349 | ||
cd02d79d PA |
11350 | /* Note that following die references may follow to a die in a |
11351 | different cu. */ | |
11352 | ||
11353 | origin_cu = cu; | |
11354 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
11355 | ||
11356 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
11357 | symbols in. */ | |
11358 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
11359 | origin_cu->list_in_scope = cu->list_in_scope; | |
11360 | ||
edb3359d DJ |
11361 | if (die->tag != origin_die->tag |
11362 | && !(die->tag == DW_TAG_inlined_subroutine | |
11363 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11364 | complaint (&symfile_complaints, |
11365 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
9c541725 PA |
11366 | to_underlying (die->sect_off), |
11367 | to_underlying (origin_die->sect_off)); | |
d389af10 JK |
11368 | |
11369 | child_die = die->child; | |
11370 | die_children_count = 0; | |
11371 | while (child_die && child_die->tag) | |
11372 | { | |
11373 | child_die = sibling_die (child_die); | |
11374 | die_children_count++; | |
11375 | } | |
8d749320 | 11376 | offsets = XNEWVEC (sect_offset, die_children_count); |
d389af10 JK |
11377 | cleanups = make_cleanup (xfree, offsets); |
11378 | ||
11379 | offsets_end = offsets; | |
3ea89b92 PMR |
11380 | for (child_die = die->child; |
11381 | child_die && child_die->tag; | |
11382 | child_die = sibling_die (child_die)) | |
11383 | { | |
11384 | struct die_info *child_origin_die; | |
11385 | struct dwarf2_cu *child_origin_cu; | |
11386 | ||
11387 | /* We are trying to process concrete instance entries: | |
216f72a1 | 11388 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
11389 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
11390 | present in the abstract instance but not referenced in the concrete | |
11391 | one. */ | |
216f72a1 JK |
11392 | if (child_die->tag == DW_TAG_call_site |
11393 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
11394 | continue; |
11395 | ||
c38f313d DJ |
11396 | /* For each CHILD_DIE, find the corresponding child of |
11397 | ORIGIN_DIE. If there is more than one layer of | |
11398 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
11399 | but GCC versions at least through 4.4 generate this (GCC PR | |
11400 | 40573). */ | |
3ea89b92 PMR |
11401 | child_origin_die = child_die; |
11402 | child_origin_cu = cu; | |
c38f313d DJ |
11403 | while (1) |
11404 | { | |
cd02d79d PA |
11405 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
11406 | child_origin_cu); | |
c38f313d DJ |
11407 | if (attr == NULL) |
11408 | break; | |
cd02d79d PA |
11409 | child_origin_die = follow_die_ref (child_origin_die, attr, |
11410 | &child_origin_cu); | |
c38f313d DJ |
11411 | } |
11412 | ||
d389af10 JK |
11413 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
11414 | counterpart may exist. */ | |
c38f313d | 11415 | if (child_origin_die != child_die) |
d389af10 | 11416 | { |
edb3359d DJ |
11417 | if (child_die->tag != child_origin_die->tag |
11418 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
11419 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
11420 | complaint (&symfile_complaints, |
11421 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
9c541725 PA |
11422 | "different tags"), |
11423 | to_underlying (child_die->sect_off), | |
11424 | to_underlying (child_origin_die->sect_off)); | |
c38f313d DJ |
11425 | if (child_origin_die->parent != origin_die) |
11426 | complaint (&symfile_complaints, | |
11427 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
9c541725 PA |
11428 | "different parents"), |
11429 | to_underlying (child_die->sect_off), | |
11430 | to_underlying (child_origin_die->sect_off)); | |
c38f313d | 11431 | else |
9c541725 | 11432 | *offsets_end++ = child_origin_die->sect_off; |
d389af10 | 11433 | } |
d389af10 JK |
11434 | } |
11435 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
11436 | unsigned_int_compar); | |
11437 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 11438 | if (offsetp[-1] == *offsetp) |
3e43a32a MS |
11439 | complaint (&symfile_complaints, |
11440 | _("Multiple children of DIE 0x%x refer " | |
11441 | "to DIE 0x%x as their abstract origin"), | |
9c541725 | 11442 | to_underlying (die->sect_off), to_underlying (*offsetp)); |
d389af10 JK |
11443 | |
11444 | offsetp = offsets; | |
11445 | origin_child_die = origin_die->child; | |
11446 | while (origin_child_die && origin_child_die->tag) | |
11447 | { | |
11448 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 11449 | while (offsetp < offsets_end |
9c541725 | 11450 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 11451 | offsetp++; |
b64f50a1 | 11452 | if (offsetp >= offsets_end |
9c541725 | 11453 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 11454 | { |
adde2bff DE |
11455 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
11456 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
11457 | This can happen with mutually referenced abstract_origins. | |
11458 | PR 16581. */ | |
11459 | if (!origin_child_die->in_process) | |
11460 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
11461 | } |
11462 | origin_child_die = sibling_die (origin_child_die); | |
11463 | } | |
cd02d79d | 11464 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
11465 | |
11466 | do_cleanups (cleanups); | |
11467 | } | |
11468 | ||
c906108c | 11469 | static void |
e7c27a73 | 11470 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11471 | { |
e7c27a73 | 11472 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11473 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11474 | struct context_stack *newobj; |
c906108c SS |
11475 | CORE_ADDR lowpc; |
11476 | CORE_ADDR highpc; | |
11477 | struct die_info *child_die; | |
edb3359d | 11478 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 11479 | const char *name; |
e142c38c | 11480 | CORE_ADDR baseaddr; |
801e3a5b | 11481 | struct block *block; |
edb3359d | 11482 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
11483 | VEC (symbolp) *template_args = NULL; |
11484 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
11485 | |
11486 | if (inlined_func) | |
11487 | { | |
11488 | /* If we do not have call site information, we can't show the | |
11489 | caller of this inlined function. That's too confusing, so | |
11490 | only use the scope for local variables. */ | |
11491 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
11492 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
11493 | if (call_line == NULL || call_file == NULL) | |
11494 | { | |
11495 | read_lexical_block_scope (die, cu); | |
11496 | return; | |
11497 | } | |
11498 | } | |
c906108c | 11499 | |
e142c38c DJ |
11500 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
11501 | ||
94af9270 | 11502 | name = dwarf2_name (die, cu); |
c906108c | 11503 | |
e8d05480 JB |
11504 | /* Ignore functions with missing or empty names. These are actually |
11505 | illegal according to the DWARF standard. */ | |
11506 | if (name == NULL) | |
11507 | { | |
11508 | complaint (&symfile_complaints, | |
b64f50a1 | 11509 | _("missing name for subprogram DIE at %d"), |
9c541725 | 11510 | to_underlying (die->sect_off)); |
e8d05480 JB |
11511 | return; |
11512 | } | |
11513 | ||
11514 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 11515 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 11516 | <= PC_BOUNDS_INVALID) |
e8d05480 | 11517 | { |
ae4d0c03 PM |
11518 | attr = dwarf2_attr (die, DW_AT_external, cu); |
11519 | if (!attr || !DW_UNSND (attr)) | |
11520 | complaint (&symfile_complaints, | |
3e43a32a MS |
11521 | _("cannot get low and high bounds " |
11522 | "for subprogram DIE at %d"), | |
9c541725 | 11523 | to_underlying (die->sect_off)); |
e8d05480 JB |
11524 | return; |
11525 | } | |
c906108c | 11526 | |
3e29f34a MR |
11527 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11528 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 11529 | |
34eaf542 TT |
11530 | /* If we have any template arguments, then we must allocate a |
11531 | different sort of symbol. */ | |
11532 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
11533 | { | |
11534 | if (child_die->tag == DW_TAG_template_type_param | |
11535 | || child_die->tag == DW_TAG_template_value_param) | |
11536 | { | |
e623cf5d | 11537 | templ_func = allocate_template_symbol (objfile); |
34eaf542 TT |
11538 | templ_func->base.is_cplus_template_function = 1; |
11539 | break; | |
11540 | } | |
11541 | } | |
11542 | ||
fe978cb0 PA |
11543 | newobj = push_context (0, lowpc); |
11544 | newobj->name = new_symbol_full (die, read_type_die (die, cu), cu, | |
34eaf542 | 11545 | (struct symbol *) templ_func); |
4c2df51b | 11546 | |
4cecd739 DJ |
11547 | /* If there is a location expression for DW_AT_frame_base, record |
11548 | it. */ | |
e142c38c | 11549 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 11550 | if (attr) |
fe978cb0 | 11551 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 11552 | |
63e43d3a PMR |
11553 | /* If there is a location for the static link, record it. */ |
11554 | newobj->static_link = NULL; | |
11555 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
11556 | if (attr) | |
11557 | { | |
224c3ddb SM |
11558 | newobj->static_link |
11559 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
11560 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
11561 | } | |
11562 | ||
e142c38c | 11563 | cu->list_in_scope = &local_symbols; |
c906108c | 11564 | |
639d11d3 | 11565 | if (die->child != NULL) |
c906108c | 11566 | { |
639d11d3 | 11567 | child_die = die->child; |
c906108c SS |
11568 | while (child_die && child_die->tag) |
11569 | { | |
34eaf542 TT |
11570 | if (child_die->tag == DW_TAG_template_type_param |
11571 | || child_die->tag == DW_TAG_template_value_param) | |
11572 | { | |
11573 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
11574 | ||
f1078f66 DJ |
11575 | if (arg != NULL) |
11576 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
11577 | } |
11578 | else | |
11579 | process_die (child_die, cu); | |
c906108c SS |
11580 | child_die = sibling_die (child_die); |
11581 | } | |
11582 | } | |
11583 | ||
d389af10 JK |
11584 | inherit_abstract_dies (die, cu); |
11585 | ||
4a811a97 UW |
11586 | /* If we have a DW_AT_specification, we might need to import using |
11587 | directives from the context of the specification DIE. See the | |
11588 | comment in determine_prefix. */ | |
11589 | if (cu->language == language_cplus | |
11590 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
11591 | { | |
11592 | struct dwarf2_cu *spec_cu = cu; | |
11593 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
11594 | ||
11595 | while (spec_die) | |
11596 | { | |
11597 | child_die = spec_die->child; | |
11598 | while (child_die && child_die->tag) | |
11599 | { | |
11600 | if (child_die->tag == DW_TAG_imported_module) | |
11601 | process_die (child_die, spec_cu); | |
11602 | child_die = sibling_die (child_die); | |
11603 | } | |
11604 | ||
11605 | /* In some cases, GCC generates specification DIEs that | |
11606 | themselves contain DW_AT_specification attributes. */ | |
11607 | spec_die = die_specification (spec_die, &spec_cu); | |
11608 | } | |
11609 | } | |
11610 | ||
fe978cb0 | 11611 | newobj = pop_context (); |
c906108c | 11612 | /* Make a block for the local symbols within. */ |
fe978cb0 | 11613 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
63e43d3a | 11614 | newobj->static_link, lowpc, highpc); |
801e3a5b | 11615 | |
df8a16a1 | 11616 | /* For C++, set the block's scope. */ |
45280282 IB |
11617 | if ((cu->language == language_cplus |
11618 | || cu->language == language_fortran | |
c44af4eb TT |
11619 | || cu->language == language_d |
11620 | || cu->language == language_rust) | |
4d4ec4e5 | 11621 | && cu->processing_has_namespace_info) |
195a3f6c TT |
11622 | block_set_scope (block, determine_prefix (die, cu), |
11623 | &objfile->objfile_obstack); | |
df8a16a1 | 11624 | |
801e3a5b JB |
11625 | /* If we have address ranges, record them. */ |
11626 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 11627 | |
fe978cb0 | 11628 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 11629 | |
34eaf542 TT |
11630 | /* Attach template arguments to function. */ |
11631 | if (! VEC_empty (symbolp, template_args)) | |
11632 | { | |
11633 | gdb_assert (templ_func != NULL); | |
11634 | ||
11635 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
11636 | templ_func->template_arguments | |
8d749320 SM |
11637 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
11638 | templ_func->n_template_arguments); | |
34eaf542 TT |
11639 | memcpy (templ_func->template_arguments, |
11640 | VEC_address (symbolp, template_args), | |
11641 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
11642 | VEC_free (symbolp, template_args); | |
11643 | } | |
11644 | ||
208d8187 JB |
11645 | /* In C++, we can have functions nested inside functions (e.g., when |
11646 | a function declares a class that has methods). This means that | |
11647 | when we finish processing a function scope, we may need to go | |
11648 | back to building a containing block's symbol lists. */ | |
fe978cb0 | 11649 | local_symbols = newobj->locals; |
22cee43f | 11650 | local_using_directives = newobj->local_using_directives; |
208d8187 | 11651 | |
921e78cf JB |
11652 | /* If we've finished processing a top-level function, subsequent |
11653 | symbols go in the file symbol list. */ | |
11654 | if (outermost_context_p ()) | |
e142c38c | 11655 | cu->list_in_scope = &file_symbols; |
c906108c SS |
11656 | } |
11657 | ||
11658 | /* Process all the DIES contained within a lexical block scope. Start | |
11659 | a new scope, process the dies, and then close the scope. */ | |
11660 | ||
11661 | static void | |
e7c27a73 | 11662 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11663 | { |
e7c27a73 | 11664 | struct objfile *objfile = cu->objfile; |
3e29f34a | 11665 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 11666 | struct context_stack *newobj; |
c906108c SS |
11667 | CORE_ADDR lowpc, highpc; |
11668 | struct die_info *child_die; | |
e142c38c DJ |
11669 | CORE_ADDR baseaddr; |
11670 | ||
11671 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
11672 | |
11673 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
11674 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
11675 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 11676 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 11677 | describe ranges. */ |
e385593e JK |
11678 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
11679 | { | |
11680 | case PC_BOUNDS_NOT_PRESENT: | |
11681 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
11682 | there was no wrapping by that DW_TAG_lexical_block. | |
11683 | GCC does no longer produces such DWARF since GCC r224161. */ | |
11684 | for (child_die = die->child; | |
11685 | child_die != NULL && child_die->tag; | |
11686 | child_die = sibling_die (child_die)) | |
11687 | process_die (child_die, cu); | |
11688 | return; | |
11689 | case PC_BOUNDS_INVALID: | |
11690 | return; | |
11691 | } | |
3e29f34a MR |
11692 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
11693 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
11694 | |
11695 | push_context (0, lowpc); | |
639d11d3 | 11696 | if (die->child != NULL) |
c906108c | 11697 | { |
639d11d3 | 11698 | child_die = die->child; |
c906108c SS |
11699 | while (child_die && child_die->tag) |
11700 | { | |
e7c27a73 | 11701 | process_die (child_die, cu); |
c906108c SS |
11702 | child_die = sibling_die (child_die); |
11703 | } | |
11704 | } | |
3ea89b92 | 11705 | inherit_abstract_dies (die, cu); |
fe978cb0 | 11706 | newobj = pop_context (); |
c906108c | 11707 | |
22cee43f | 11708 | if (local_symbols != NULL || local_using_directives != NULL) |
c906108c | 11709 | { |
801e3a5b | 11710 | struct block *block |
63e43d3a | 11711 | = finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 11712 | newobj->start_addr, highpc); |
801e3a5b JB |
11713 | |
11714 | /* Note that recording ranges after traversing children, as we | |
11715 | do here, means that recording a parent's ranges entails | |
11716 | walking across all its children's ranges as they appear in | |
11717 | the address map, which is quadratic behavior. | |
11718 | ||
11719 | It would be nicer to record the parent's ranges before | |
11720 | traversing its children, simply overriding whatever you find | |
11721 | there. But since we don't even decide whether to create a | |
11722 | block until after we've traversed its children, that's hard | |
11723 | to do. */ | |
11724 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 11725 | } |
fe978cb0 | 11726 | local_symbols = newobj->locals; |
22cee43f | 11727 | local_using_directives = newobj->local_using_directives; |
c906108c SS |
11728 | } |
11729 | ||
216f72a1 | 11730 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
11731 | |
11732 | static void | |
11733 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11734 | { | |
11735 | struct objfile *objfile = cu->objfile; | |
11736 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11737 | CORE_ADDR pc, baseaddr; | |
11738 | struct attribute *attr; | |
11739 | struct call_site *call_site, call_site_local; | |
11740 | void **slot; | |
11741 | int nparams; | |
11742 | struct die_info *child_die; | |
11743 | ||
11744 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
11745 | ||
216f72a1 JK |
11746 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
11747 | if (attr == NULL) | |
11748 | { | |
11749 | /* This was a pre-DWARF-5 GNU extension alias | |
11750 | for DW_AT_call_return_pc. */ | |
11751 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
11752 | } | |
96408a79 SA |
11753 | if (!attr) |
11754 | { | |
11755 | complaint (&symfile_complaints, | |
216f72a1 | 11756 | _("missing DW_AT_call_return_pc for DW_TAG_call_site " |
96408a79 | 11757 | "DIE 0x%x [in module %s]"), |
9c541725 | 11758 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 SA |
11759 | return; |
11760 | } | |
31aa7e4e | 11761 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 11762 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
11763 | |
11764 | if (cu->call_site_htab == NULL) | |
11765 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
11766 | NULL, &objfile->objfile_obstack, | |
11767 | hashtab_obstack_allocate, NULL); | |
11768 | call_site_local.pc = pc; | |
11769 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
11770 | if (*slot != NULL) | |
11771 | { | |
11772 | complaint (&symfile_complaints, | |
216f72a1 | 11773 | _("Duplicate PC %s for DW_TAG_call_site " |
96408a79 | 11774 | "DIE 0x%x [in module %s]"), |
9c541725 | 11775 | paddress (gdbarch, pc), to_underlying (die->sect_off), |
4262abfb | 11776 | objfile_name (objfile)); |
96408a79 SA |
11777 | return; |
11778 | } | |
11779 | ||
11780 | /* Count parameters at the caller. */ | |
11781 | ||
11782 | nparams = 0; | |
11783 | for (child_die = die->child; child_die && child_die->tag; | |
11784 | child_die = sibling_die (child_die)) | |
11785 | { | |
216f72a1 JK |
11786 | if (child_die->tag != DW_TAG_call_site_parameter |
11787 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
11788 | { |
11789 | complaint (&symfile_complaints, | |
216f72a1 JK |
11790 | _("Tag %d is not DW_TAG_call_site_parameter in " |
11791 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 | 11792 | child_die->tag, to_underlying (child_die->sect_off), |
4262abfb | 11793 | objfile_name (objfile)); |
96408a79 SA |
11794 | continue; |
11795 | } | |
11796 | ||
11797 | nparams++; | |
11798 | } | |
11799 | ||
224c3ddb SM |
11800 | call_site |
11801 | = ((struct call_site *) | |
11802 | obstack_alloc (&objfile->objfile_obstack, | |
11803 | sizeof (*call_site) | |
11804 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
11805 | *slot = call_site; |
11806 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
11807 | call_site->pc = pc; | |
11808 | ||
216f72a1 JK |
11809 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
11810 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
11811 | { |
11812 | struct die_info *func_die; | |
11813 | ||
11814 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
11815 | for (func_die = die->parent; | |
11816 | func_die && func_die->tag != DW_TAG_subprogram | |
11817 | && func_die->tag != DW_TAG_subroutine_type; | |
11818 | func_die = func_die->parent); | |
11819 | ||
216f72a1 JK |
11820 | /* DW_AT_call_all_calls is a superset |
11821 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 11822 | if (func_die |
216f72a1 | 11823 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 11824 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 11825 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
11826 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
11827 | { | |
11828 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
11829 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
11830 | both the initial caller containing the real return address PC and | |
11831 | the final callee containing the current PC of a chain of tail | |
11832 | calls do not need to have the tail call list complete. But any | |
11833 | function candidate for a virtual tail call frame searched via | |
11834 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
11835 | determined unambiguously. */ | |
11836 | } | |
11837 | else | |
11838 | { | |
11839 | struct type *func_type = NULL; | |
11840 | ||
11841 | if (func_die) | |
11842 | func_type = get_die_type (func_die, cu); | |
11843 | if (func_type != NULL) | |
11844 | { | |
11845 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
11846 | ||
11847 | /* Enlist this call site to the function. */ | |
11848 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
11849 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
11850 | } | |
11851 | else | |
11852 | complaint (&symfile_complaints, | |
216f72a1 | 11853 | _("Cannot find function owning DW_TAG_call_site " |
96408a79 | 11854 | "DIE 0x%x [in module %s]"), |
9c541725 | 11855 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 SA |
11856 | } |
11857 | } | |
11858 | ||
216f72a1 JK |
11859 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
11860 | if (attr == NULL) | |
11861 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
11862 | if (attr == NULL) | |
11863 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 11864 | if (attr == NULL) |
216f72a1 JK |
11865 | { |
11866 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
11867 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11868 | } | |
96408a79 SA |
11869 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
11870 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
11871 | /* Keep NULL DWARF_BLOCK. */; | |
11872 | else if (attr_form_is_block (attr)) | |
11873 | { | |
11874 | struct dwarf2_locexpr_baton *dlbaton; | |
11875 | ||
8d749320 | 11876 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
11877 | dlbaton->data = DW_BLOCK (attr)->data; |
11878 | dlbaton->size = DW_BLOCK (attr)->size; | |
11879 | dlbaton->per_cu = cu->per_cu; | |
11880 | ||
11881 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
11882 | } | |
7771576e | 11883 | else if (attr_form_is_ref (attr)) |
96408a79 | 11884 | { |
96408a79 SA |
11885 | struct dwarf2_cu *target_cu = cu; |
11886 | struct die_info *target_die; | |
11887 | ||
ac9ec31b | 11888 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
11889 | gdb_assert (target_cu->objfile == objfile); |
11890 | if (die_is_declaration (target_die, target_cu)) | |
11891 | { | |
7d45c7c3 | 11892 | const char *target_physname; |
9112db09 JK |
11893 | |
11894 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
7d45c7c3 KB |
11895 | target_physname = dwarf2_string_attr (target_die, |
11896 | DW_AT_linkage_name, | |
11897 | target_cu); | |
11898 | if (target_physname == NULL) | |
11899 | target_physname = dwarf2_string_attr (target_die, | |
11900 | DW_AT_MIPS_linkage_name, | |
11901 | target_cu); | |
11902 | if (target_physname == NULL) | |
9112db09 | 11903 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 SA |
11904 | if (target_physname == NULL) |
11905 | complaint (&symfile_complaints, | |
216f72a1 | 11906 | _("DW_AT_call_target target DIE has invalid " |
96408a79 | 11907 | "physname, for referencing DIE 0x%x [in module %s]"), |
9c541725 | 11908 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 | 11909 | else |
7d455152 | 11910 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
11911 | } |
11912 | else | |
11913 | { | |
11914 | CORE_ADDR lowpc; | |
11915 | ||
11916 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 11917 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 11918 | <= PC_BOUNDS_INVALID) |
96408a79 | 11919 | complaint (&symfile_complaints, |
216f72a1 | 11920 | _("DW_AT_call_target target DIE has invalid " |
96408a79 | 11921 | "low pc, for referencing DIE 0x%x [in module %s]"), |
9c541725 | 11922 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 | 11923 | else |
3e29f34a MR |
11924 | { |
11925 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
11926 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
11927 | } | |
96408a79 SA |
11928 | } |
11929 | } | |
11930 | else | |
11931 | complaint (&symfile_complaints, | |
216f72a1 | 11932 | _("DW_TAG_call_site DW_AT_call_target is neither " |
96408a79 | 11933 | "block nor reference, for DIE 0x%x [in module %s]"), |
9c541725 | 11934 | to_underlying (die->sect_off), objfile_name (objfile)); |
96408a79 SA |
11935 | |
11936 | call_site->per_cu = cu->per_cu; | |
11937 | ||
11938 | for (child_die = die->child; | |
11939 | child_die && child_die->tag; | |
11940 | child_die = sibling_die (child_die)) | |
11941 | { | |
96408a79 | 11942 | struct call_site_parameter *parameter; |
1788b2d3 | 11943 | struct attribute *loc, *origin; |
96408a79 | 11944 | |
216f72a1 JK |
11945 | if (child_die->tag != DW_TAG_call_site_parameter |
11946 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
11947 | { |
11948 | /* Already printed the complaint above. */ | |
11949 | continue; | |
11950 | } | |
11951 | ||
11952 | gdb_assert (call_site->parameter_count < nparams); | |
11953 | parameter = &call_site->parameter[call_site->parameter_count]; | |
11954 | ||
1788b2d3 JK |
11955 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
11956 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 11957 | register is contained in DW_AT_call_value. */ |
96408a79 | 11958 | |
24c5c679 | 11959 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
11960 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
11961 | if (origin == NULL) | |
11962 | { | |
11963 | /* This was a pre-DWARF-5 GNU extension alias | |
11964 | for DW_AT_call_parameter. */ | |
11965 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
11966 | } | |
7771576e | 11967 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 11968 | { |
1788b2d3 | 11969 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
11970 | |
11971 | sect_offset sect_off | |
11972 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
11973 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
11974 | { |
11975 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
11976 | binding can be done only inside one CU. Such referenced DIE | |
11977 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
11978 | complaint (&symfile_complaints, | |
216f72a1 JK |
11979 | _("DW_AT_call_parameter offset is not in CU for " |
11980 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 PA |
11981 | to_underlying (child_die->sect_off), |
11982 | objfile_name (objfile)); | |
d76b7dbc JK |
11983 | continue; |
11984 | } | |
9c541725 PA |
11985 | parameter->u.param_cu_off |
11986 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
11987 | } |
11988 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
11989 | { |
11990 | complaint (&symfile_complaints, | |
11991 | _("No DW_FORM_block* DW_AT_location for " | |
216f72a1 | 11992 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), |
9c541725 | 11993 | to_underlying (child_die->sect_off), objfile_name (objfile)); |
96408a79 SA |
11994 | continue; |
11995 | } | |
24c5c679 | 11996 | else |
96408a79 | 11997 | { |
24c5c679 JK |
11998 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
11999 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
12000 | if (parameter->u.dwarf_reg != -1) | |
12001 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
12002 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
12003 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
12004 | ¶meter->u.fb_offset)) | |
12005 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
12006 | else | |
12007 | { | |
12008 | complaint (&symfile_complaints, | |
12009 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
12010 | "for DW_FORM_block* DW_AT_location is supported for " | |
216f72a1 | 12011 | "DW_TAG_call_site child DIE 0x%x " |
24c5c679 | 12012 | "[in module %s]"), |
9c541725 PA |
12013 | to_underlying (child_die->sect_off), |
12014 | objfile_name (objfile)); | |
24c5c679 JK |
12015 | continue; |
12016 | } | |
96408a79 SA |
12017 | } |
12018 | ||
216f72a1 JK |
12019 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
12020 | if (attr == NULL) | |
12021 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
12022 | if (!attr_form_is_block (attr)) |
12023 | { | |
12024 | complaint (&symfile_complaints, | |
216f72a1 JK |
12025 | _("No DW_FORM_block* DW_AT_call_value for " |
12026 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 PA |
12027 | to_underlying (child_die->sect_off), |
12028 | objfile_name (objfile)); | |
96408a79 SA |
12029 | continue; |
12030 | } | |
12031 | parameter->value = DW_BLOCK (attr)->data; | |
12032 | parameter->value_size = DW_BLOCK (attr)->size; | |
12033 | ||
12034 | /* Parameters are not pre-cleared by memset above. */ | |
12035 | parameter->data_value = NULL; | |
12036 | parameter->data_value_size = 0; | |
12037 | call_site->parameter_count++; | |
12038 | ||
216f72a1 JK |
12039 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
12040 | if (attr == NULL) | |
12041 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
12042 | if (attr) |
12043 | { | |
12044 | if (!attr_form_is_block (attr)) | |
12045 | complaint (&symfile_complaints, | |
216f72a1 JK |
12046 | _("No DW_FORM_block* DW_AT_call_data_value for " |
12047 | "DW_TAG_call_site child DIE 0x%x [in module %s]"), | |
9c541725 PA |
12048 | to_underlying (child_die->sect_off), |
12049 | objfile_name (objfile)); | |
96408a79 SA |
12050 | else |
12051 | { | |
12052 | parameter->data_value = DW_BLOCK (attr)->data; | |
12053 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
12054 | } | |
12055 | } | |
12056 | } | |
12057 | } | |
12058 | ||
43988095 JK |
12059 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
12060 | reading .debug_rnglists. | |
12061 | Callback's type should be: | |
12062 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
12063 | Return true if the attributes are present and valid, otherwise, | |
12064 | return false. */ | |
12065 | ||
12066 | template <typename Callback> | |
12067 | static bool | |
12068 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
12069 | Callback &&callback) | |
12070 | { | |
12071 | struct objfile *objfile = cu->objfile; | |
12072 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
12073 | struct comp_unit_head *cu_header = &cu->header; | |
12074 | bfd *obfd = objfile->obfd; | |
12075 | unsigned int addr_size = cu_header->addr_size; | |
12076 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12077 | /* Base address selection entry. */ | |
12078 | CORE_ADDR base; | |
12079 | int found_base; | |
12080 | unsigned int dummy; | |
12081 | const gdb_byte *buffer; | |
12082 | CORE_ADDR low = 0; | |
12083 | CORE_ADDR high = 0; | |
12084 | CORE_ADDR baseaddr; | |
12085 | bool overflow = false; | |
12086 | ||
12087 | found_base = cu->base_known; | |
12088 | base = cu->base_address; | |
12089 | ||
12090 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
12091 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
12092 | { | |
12093 | complaint (&symfile_complaints, | |
12094 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
12095 | offset); | |
12096 | return false; | |
12097 | } | |
12098 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
12099 | ||
12100 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
12101 | ||
12102 | while (1) | |
12103 | { | |
7814882a JK |
12104 | /* Initialize it due to a false compiler warning. */ |
12105 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
12106 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
12107 | + dwarf2_per_objfile->rnglists.size); | |
12108 | unsigned int bytes_read; | |
12109 | ||
12110 | if (buffer == buf_end) | |
12111 | { | |
12112 | overflow = true; | |
12113 | break; | |
12114 | } | |
12115 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
12116 | switch (rlet) | |
12117 | { | |
12118 | case DW_RLE_end_of_list: | |
12119 | break; | |
12120 | case DW_RLE_base_address: | |
12121 | if (buffer + cu->header.addr_size > buf_end) | |
12122 | { | |
12123 | overflow = true; | |
12124 | break; | |
12125 | } | |
12126 | base = read_address (obfd, buffer, cu, &bytes_read); | |
12127 | found_base = 1; | |
12128 | buffer += bytes_read; | |
12129 | break; | |
12130 | case DW_RLE_start_length: | |
12131 | if (buffer + cu->header.addr_size > buf_end) | |
12132 | { | |
12133 | overflow = true; | |
12134 | break; | |
12135 | } | |
12136 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
12137 | buffer += bytes_read; | |
12138 | range_end = (range_beginning | |
12139 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
12140 | buffer += bytes_read; | |
12141 | if (buffer > buf_end) | |
12142 | { | |
12143 | overflow = true; | |
12144 | break; | |
12145 | } | |
12146 | break; | |
12147 | case DW_RLE_offset_pair: | |
12148 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
12149 | buffer += bytes_read; | |
12150 | if (buffer > buf_end) | |
12151 | { | |
12152 | overflow = true; | |
12153 | break; | |
12154 | } | |
12155 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
12156 | buffer += bytes_read; | |
12157 | if (buffer > buf_end) | |
12158 | { | |
12159 | overflow = true; | |
12160 | break; | |
12161 | } | |
12162 | break; | |
12163 | case DW_RLE_start_end: | |
12164 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
12165 | { | |
12166 | overflow = true; | |
12167 | break; | |
12168 | } | |
12169 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
12170 | buffer += bytes_read; | |
12171 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
12172 | buffer += bytes_read; | |
12173 | break; | |
12174 | default: | |
12175 | complaint (&symfile_complaints, | |
12176 | _("Invalid .debug_rnglists data (no base address)")); | |
12177 | return false; | |
12178 | } | |
12179 | if (rlet == DW_RLE_end_of_list || overflow) | |
12180 | break; | |
12181 | if (rlet == DW_RLE_base_address) | |
12182 | continue; | |
12183 | ||
12184 | if (!found_base) | |
12185 | { | |
12186 | /* We have no valid base address for the ranges | |
12187 | data. */ | |
12188 | complaint (&symfile_complaints, | |
12189 | _("Invalid .debug_rnglists data (no base address)")); | |
12190 | return false; | |
12191 | } | |
12192 | ||
12193 | if (range_beginning > range_end) | |
12194 | { | |
12195 | /* Inverted range entries are invalid. */ | |
12196 | complaint (&symfile_complaints, | |
12197 | _("Invalid .debug_rnglists data (inverted range)")); | |
12198 | return false; | |
12199 | } | |
12200 | ||
12201 | /* Empty range entries have no effect. */ | |
12202 | if (range_beginning == range_end) | |
12203 | continue; | |
12204 | ||
12205 | range_beginning += base; | |
12206 | range_end += base; | |
12207 | ||
12208 | /* A not-uncommon case of bad debug info. | |
12209 | Don't pollute the addrmap with bad data. */ | |
12210 | if (range_beginning + baseaddr == 0 | |
12211 | && !dwarf2_per_objfile->has_section_at_zero) | |
12212 | { | |
12213 | complaint (&symfile_complaints, | |
12214 | _(".debug_rnglists entry has start address of zero" | |
12215 | " [in module %s]"), objfile_name (objfile)); | |
12216 | continue; | |
12217 | } | |
12218 | ||
12219 | callback (range_beginning, range_end); | |
12220 | } | |
12221 | ||
12222 | if (overflow) | |
12223 | { | |
12224 | complaint (&symfile_complaints, | |
12225 | _("Offset %d is not terminated " | |
12226 | "for DW_AT_ranges attribute"), | |
12227 | offset); | |
12228 | return false; | |
12229 | } | |
12230 | ||
12231 | return true; | |
12232 | } | |
12233 | ||
12234 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
12235 | Callback's type should be: | |
12236 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 12237 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 12238 | |
43988095 | 12239 | template <typename Callback> |
43039443 | 12240 | static int |
5f46c5a5 | 12241 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 12242 | Callback &&callback) |
43039443 JK |
12243 | { |
12244 | struct objfile *objfile = cu->objfile; | |
3e29f34a | 12245 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
43039443 JK |
12246 | struct comp_unit_head *cu_header = &cu->header; |
12247 | bfd *obfd = objfile->obfd; | |
12248 | unsigned int addr_size = cu_header->addr_size; | |
12249 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12250 | /* Base address selection entry. */ | |
12251 | CORE_ADDR base; | |
12252 | int found_base; | |
12253 | unsigned int dummy; | |
d521ce57 | 12254 | const gdb_byte *buffer; |
ff013f42 | 12255 | CORE_ADDR baseaddr; |
43039443 | 12256 | |
43988095 JK |
12257 | if (cu_header->version >= 5) |
12258 | return dwarf2_rnglists_process (offset, cu, callback); | |
12259 | ||
d00adf39 DE |
12260 | found_base = cu->base_known; |
12261 | base = cu->base_address; | |
43039443 | 12262 | |
be391dca | 12263 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 12264 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
12265 | { |
12266 | complaint (&symfile_complaints, | |
12267 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
12268 | offset); | |
12269 | return 0; | |
12270 | } | |
dce234bc | 12271 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 12272 | |
e7030f15 | 12273 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 12274 | |
43039443 JK |
12275 | while (1) |
12276 | { | |
12277 | CORE_ADDR range_beginning, range_end; | |
12278 | ||
12279 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
12280 | buffer += addr_size; | |
12281 | range_end = read_address (obfd, buffer, cu, &dummy); | |
12282 | buffer += addr_size; | |
12283 | offset += 2 * addr_size; | |
12284 | ||
12285 | /* An end of list marker is a pair of zero addresses. */ | |
12286 | if (range_beginning == 0 && range_end == 0) | |
12287 | /* Found the end of list entry. */ | |
12288 | break; | |
12289 | ||
12290 | /* Each base address selection entry is a pair of 2 values. | |
12291 | The first is the largest possible address, the second is | |
12292 | the base address. Check for a base address here. */ | |
12293 | if ((range_beginning & mask) == mask) | |
12294 | { | |
28d2bfb9 AB |
12295 | /* If we found the largest possible address, then we already |
12296 | have the base address in range_end. */ | |
12297 | base = range_end; | |
43039443 JK |
12298 | found_base = 1; |
12299 | continue; | |
12300 | } | |
12301 | ||
12302 | if (!found_base) | |
12303 | { | |
12304 | /* We have no valid base address for the ranges | |
12305 | data. */ | |
12306 | complaint (&symfile_complaints, | |
12307 | _("Invalid .debug_ranges data (no base address)")); | |
12308 | return 0; | |
12309 | } | |
12310 | ||
9277c30c UW |
12311 | if (range_beginning > range_end) |
12312 | { | |
12313 | /* Inverted range entries are invalid. */ | |
12314 | complaint (&symfile_complaints, | |
12315 | _("Invalid .debug_ranges data (inverted range)")); | |
12316 | return 0; | |
12317 | } | |
12318 | ||
12319 | /* Empty range entries have no effect. */ | |
12320 | if (range_beginning == range_end) | |
12321 | continue; | |
12322 | ||
43039443 JK |
12323 | range_beginning += base; |
12324 | range_end += base; | |
12325 | ||
01093045 DE |
12326 | /* A not-uncommon case of bad debug info. |
12327 | Don't pollute the addrmap with bad data. */ | |
12328 | if (range_beginning + baseaddr == 0 | |
12329 | && !dwarf2_per_objfile->has_section_at_zero) | |
12330 | { | |
12331 | complaint (&symfile_complaints, | |
12332 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 12333 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
12334 | continue; |
12335 | } | |
12336 | ||
5f46c5a5 JK |
12337 | callback (range_beginning, range_end); |
12338 | } | |
12339 | ||
12340 | return 1; | |
12341 | } | |
12342 | ||
12343 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
12344 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
12345 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
12346 | ||
12347 | static int | |
12348 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
12349 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
12350 | struct partial_symtab *ranges_pst) | |
12351 | { | |
12352 | struct objfile *objfile = cu->objfile; | |
12353 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
12354 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
12355 | SECT_OFF_TEXT (objfile)); | |
12356 | int low_set = 0; | |
12357 | CORE_ADDR low = 0; | |
12358 | CORE_ADDR high = 0; | |
12359 | int retval; | |
12360 | ||
12361 | retval = dwarf2_ranges_process (offset, cu, | |
12362 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
12363 | { | |
9277c30c | 12364 | if (ranges_pst != NULL) |
3e29f34a MR |
12365 | { |
12366 | CORE_ADDR lowpc; | |
12367 | CORE_ADDR highpc; | |
12368 | ||
12369 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
12370 | range_beginning + baseaddr); | |
12371 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
12372 | range_end + baseaddr); | |
12373 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
12374 | ranges_pst); | |
12375 | } | |
ff013f42 | 12376 | |
43039443 JK |
12377 | /* FIXME: This is recording everything as a low-high |
12378 | segment of consecutive addresses. We should have a | |
12379 | data structure for discontiguous block ranges | |
12380 | instead. */ | |
12381 | if (! low_set) | |
12382 | { | |
12383 | low = range_beginning; | |
12384 | high = range_end; | |
12385 | low_set = 1; | |
12386 | } | |
12387 | else | |
12388 | { | |
12389 | if (range_beginning < low) | |
12390 | low = range_beginning; | |
12391 | if (range_end > high) | |
12392 | high = range_end; | |
12393 | } | |
5f46c5a5 JK |
12394 | }); |
12395 | if (!retval) | |
12396 | return 0; | |
43039443 JK |
12397 | |
12398 | if (! low_set) | |
12399 | /* If the first entry is an end-of-list marker, the range | |
12400 | describes an empty scope, i.e. no instructions. */ | |
12401 | return 0; | |
12402 | ||
12403 | if (low_return) | |
12404 | *low_return = low; | |
12405 | if (high_return) | |
12406 | *high_return = high; | |
12407 | return 1; | |
12408 | } | |
12409 | ||
3a2b436a JK |
12410 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
12411 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 12412 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 12413 | |
3a2b436a | 12414 | static enum pc_bounds_kind |
af34e669 | 12415 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
12416 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
12417 | struct partial_symtab *pst) | |
c906108c SS |
12418 | { |
12419 | struct attribute *attr; | |
91da1414 | 12420 | struct attribute *attr_high; |
af34e669 DJ |
12421 | CORE_ADDR low = 0; |
12422 | CORE_ADDR high = 0; | |
e385593e | 12423 | enum pc_bounds_kind ret; |
c906108c | 12424 | |
91da1414 MW |
12425 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12426 | if (attr_high) | |
af34e669 | 12427 | { |
e142c38c | 12428 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 12429 | if (attr) |
91da1414 | 12430 | { |
31aa7e4e JB |
12431 | low = attr_value_as_address (attr); |
12432 | high = attr_value_as_address (attr_high); | |
12433 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12434 | high += low; | |
91da1414 | 12435 | } |
af34e669 DJ |
12436 | else |
12437 | /* Found high w/o low attribute. */ | |
e385593e | 12438 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
12439 | |
12440 | /* Found consecutive range of addresses. */ | |
3a2b436a | 12441 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 12442 | } |
c906108c | 12443 | else |
af34e669 | 12444 | { |
e142c38c | 12445 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
12446 | if (attr != NULL) |
12447 | { | |
ab435259 DE |
12448 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12449 | We take advantage of the fact that DW_AT_ranges does not appear | |
12450 | in DW_TAG_compile_unit of DWO files. */ | |
12451 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
12452 | unsigned int ranges_offset = (DW_UNSND (attr) | |
12453 | + (need_ranges_base | |
12454 | ? cu->ranges_base | |
12455 | : 0)); | |
2e3cf129 | 12456 | |
af34e669 | 12457 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 12458 | .debug_ranges section. */ |
2e3cf129 | 12459 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 12460 | return PC_BOUNDS_INVALID; |
43039443 | 12461 | /* Found discontinuous range of addresses. */ |
3a2b436a | 12462 | ret = PC_BOUNDS_RANGES; |
af34e669 | 12463 | } |
e385593e JK |
12464 | else |
12465 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 12466 | } |
c906108c | 12467 | |
9373cf26 JK |
12468 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
12469 | if (high <= low) | |
e385593e | 12470 | return PC_BOUNDS_INVALID; |
c906108c SS |
12471 | |
12472 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
12473 | eliminate duplicate copies of functions and vtables and such. | |
12474 | The linker will arbitrarily choose one and discard the others. | |
12475 | The AT_*_pc values for such functions refer to local labels in | |
12476 | these sections. If the section from that file was discarded, the | |
12477 | labels are not in the output, so the relocs get a value of 0. | |
12478 | If this is a discarded function, mark the pc bounds as invalid, | |
12479 | so that GDB will ignore it. */ | |
72dca2f5 | 12480 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 12481 | return PC_BOUNDS_INVALID; |
c906108c SS |
12482 | |
12483 | *lowpc = low; | |
96408a79 SA |
12484 | if (highpc) |
12485 | *highpc = high; | |
af34e669 | 12486 | return ret; |
c906108c SS |
12487 | } |
12488 | ||
b084d499 JB |
12489 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
12490 | its low and high PC addresses. Do nothing if these addresses could not | |
12491 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
12492 | and HIGHPC to the high address if greater than HIGHPC. */ | |
12493 | ||
12494 | static void | |
12495 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
12496 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12497 | struct dwarf2_cu *cu) | |
12498 | { | |
12499 | CORE_ADDR low, high; | |
12500 | struct die_info *child = die->child; | |
12501 | ||
e385593e | 12502 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 12503 | { |
325fac50 PA |
12504 | *lowpc = std::min (*lowpc, low); |
12505 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
12506 | } |
12507 | ||
12508 | /* If the language does not allow nested subprograms (either inside | |
12509 | subprograms or lexical blocks), we're done. */ | |
12510 | if (cu->language != language_ada) | |
12511 | return; | |
6e70227d | 12512 | |
b084d499 JB |
12513 | /* Check all the children of the given DIE. If it contains nested |
12514 | subprograms, then check their pc bounds. Likewise, we need to | |
12515 | check lexical blocks as well, as they may also contain subprogram | |
12516 | definitions. */ | |
12517 | while (child && child->tag) | |
12518 | { | |
12519 | if (child->tag == DW_TAG_subprogram | |
12520 | || child->tag == DW_TAG_lexical_block) | |
12521 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
12522 | child = sibling_die (child); | |
12523 | } | |
12524 | } | |
12525 | ||
fae299cd DC |
12526 | /* Get the low and high pc's represented by the scope DIE, and store |
12527 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
12528 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
12529 | ||
12530 | static void | |
12531 | get_scope_pc_bounds (struct die_info *die, | |
12532 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
12533 | struct dwarf2_cu *cu) | |
12534 | { | |
12535 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
12536 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
12537 | CORE_ADDR current_low, current_high; | |
12538 | ||
3a2b436a | 12539 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 12540 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
12541 | { |
12542 | best_low = current_low; | |
12543 | best_high = current_high; | |
12544 | } | |
12545 | else | |
12546 | { | |
12547 | struct die_info *child = die->child; | |
12548 | ||
12549 | while (child && child->tag) | |
12550 | { | |
12551 | switch (child->tag) { | |
12552 | case DW_TAG_subprogram: | |
b084d499 | 12553 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
12554 | break; |
12555 | case DW_TAG_namespace: | |
f55ee35c | 12556 | case DW_TAG_module: |
fae299cd DC |
12557 | /* FIXME: carlton/2004-01-16: Should we do this for |
12558 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
12559 | that current GCC's always emit the DIEs corresponding | |
12560 | to definitions of methods of classes as children of a | |
12561 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
12562 | the DIEs giving the declarations, which could be | |
12563 | anywhere). But I don't see any reason why the | |
12564 | standards says that they have to be there. */ | |
12565 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
12566 | ||
12567 | if (current_low != ((CORE_ADDR) -1)) | |
12568 | { | |
325fac50 PA |
12569 | best_low = std::min (best_low, current_low); |
12570 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
12571 | } |
12572 | break; | |
12573 | default: | |
0963b4bd | 12574 | /* Ignore. */ |
fae299cd DC |
12575 | break; |
12576 | } | |
12577 | ||
12578 | child = sibling_die (child); | |
12579 | } | |
12580 | } | |
12581 | ||
12582 | *lowpc = best_low; | |
12583 | *highpc = best_high; | |
12584 | } | |
12585 | ||
801e3a5b JB |
12586 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
12587 | in DIE. */ | |
380bca97 | 12588 | |
801e3a5b JB |
12589 | static void |
12590 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
12591 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
12592 | { | |
bb5ed363 | 12593 | struct objfile *objfile = cu->objfile; |
3e29f34a | 12594 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 12595 | struct attribute *attr; |
91da1414 | 12596 | struct attribute *attr_high; |
801e3a5b | 12597 | |
91da1414 MW |
12598 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
12599 | if (attr_high) | |
801e3a5b | 12600 | { |
801e3a5b JB |
12601 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
12602 | if (attr) | |
12603 | { | |
31aa7e4e JB |
12604 | CORE_ADDR low = attr_value_as_address (attr); |
12605 | CORE_ADDR high = attr_value_as_address (attr_high); | |
12606 | ||
12607 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
12608 | high += low; | |
9a619af0 | 12609 | |
3e29f34a MR |
12610 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
12611 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
12612 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
12613 | } |
12614 | } | |
12615 | ||
12616 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
12617 | if (attr) | |
12618 | { | |
bb5ed363 | 12619 | bfd *obfd = objfile->obfd; |
ab435259 DE |
12620 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
12621 | We take advantage of the fact that DW_AT_ranges does not appear | |
12622 | in DW_TAG_compile_unit of DWO files. */ | |
12623 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
12624 | |
12625 | /* The value of the DW_AT_ranges attribute is the offset of the | |
12626 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
12627 | unsigned long offset = (DW_UNSND (attr) |
12628 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 12629 | const gdb_byte *buffer; |
801e3a5b JB |
12630 | |
12631 | /* For some target architectures, but not others, the | |
12632 | read_address function sign-extends the addresses it returns. | |
12633 | To recognize base address selection entries, we need a | |
12634 | mask. */ | |
12635 | unsigned int addr_size = cu->header.addr_size; | |
12636 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
12637 | ||
12638 | /* The base address, to which the next pair is relative. Note | |
12639 | that this 'base' is a DWARF concept: most entries in a range | |
12640 | list are relative, to reduce the number of relocs against the | |
12641 | debugging information. This is separate from this function's | |
12642 | 'baseaddr' argument, which GDB uses to relocate debugging | |
12643 | information from a shared library based on the address at | |
12644 | which the library was loaded. */ | |
d00adf39 DE |
12645 | CORE_ADDR base = cu->base_address; |
12646 | int base_known = cu->base_known; | |
801e3a5b | 12647 | |
5f46c5a5 JK |
12648 | dwarf2_ranges_process (offset, cu, |
12649 | [&] (CORE_ADDR start, CORE_ADDR end) | |
12650 | { | |
58fdfd2c JK |
12651 | start += baseaddr; |
12652 | end += baseaddr; | |
5f46c5a5 JK |
12653 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
12654 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
12655 | record_block_range (block, start, end - 1); | |
12656 | }); | |
801e3a5b JB |
12657 | } |
12658 | } | |
12659 | ||
685b1105 JK |
12660 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
12661 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 12662 | |
685b1105 JK |
12663 | static void |
12664 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 12665 | { |
38360086 | 12666 | int major, minor; |
60d5a603 JK |
12667 | |
12668 | if (cu->producer == NULL) | |
12669 | { | |
12670 | /* For unknown compilers expect their behavior is DWARF version | |
12671 | compliant. | |
12672 | ||
12673 | GCC started to support .debug_types sections by -gdwarf-4 since | |
12674 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
12675 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
12676 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
12677 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 12678 | } |
b1ffba5a | 12679 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 12680 | { |
38360086 MW |
12681 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
12682 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 12683 | } |
61012eef | 12684 | else if (startswith (cu->producer, "Intel(R) C")) |
685b1105 JK |
12685 | cu->producer_is_icc = 1; |
12686 | else | |
12687 | { | |
12688 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
12689 | compliant. */ | |
60d5a603 JK |
12690 | } |
12691 | ||
ba919b58 | 12692 | cu->checked_producer = 1; |
685b1105 | 12693 | } |
ba919b58 | 12694 | |
685b1105 JK |
12695 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
12696 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
12697 | during 4.6.0 experimental. */ | |
12698 | ||
12699 | static int | |
12700 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
12701 | { | |
12702 | if (!cu->checked_producer) | |
12703 | check_producer (cu); | |
12704 | ||
12705 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
12706 | } |
12707 | ||
12708 | /* Return the default accessibility type if it is not overriden by | |
12709 | DW_AT_accessibility. */ | |
12710 | ||
12711 | static enum dwarf_access_attribute | |
12712 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
12713 | { | |
12714 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
12715 | { | |
12716 | /* The default DWARF 2 accessibility for members is public, the default | |
12717 | accessibility for inheritance is private. */ | |
12718 | ||
12719 | if (die->tag != DW_TAG_inheritance) | |
12720 | return DW_ACCESS_public; | |
12721 | else | |
12722 | return DW_ACCESS_private; | |
12723 | } | |
12724 | else | |
12725 | { | |
12726 | /* DWARF 3+ defines the default accessibility a different way. The same | |
12727 | rules apply now for DW_TAG_inheritance as for the members and it only | |
12728 | depends on the container kind. */ | |
12729 | ||
12730 | if (die->parent->tag == DW_TAG_class_type) | |
12731 | return DW_ACCESS_private; | |
12732 | else | |
12733 | return DW_ACCESS_public; | |
12734 | } | |
12735 | } | |
12736 | ||
74ac6d43 TT |
12737 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
12738 | offset. If the attribute was not found return 0, otherwise return | |
12739 | 1. If it was found but could not properly be handled, set *OFFSET | |
12740 | to 0. */ | |
12741 | ||
12742 | static int | |
12743 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
12744 | LONGEST *offset) | |
12745 | { | |
12746 | struct attribute *attr; | |
12747 | ||
12748 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
12749 | if (attr != NULL) | |
12750 | { | |
12751 | *offset = 0; | |
12752 | ||
12753 | /* Note that we do not check for a section offset first here. | |
12754 | This is because DW_AT_data_member_location is new in DWARF 4, | |
12755 | so if we see it, we can assume that a constant form is really | |
12756 | a constant and not a section offset. */ | |
12757 | if (attr_form_is_constant (attr)) | |
12758 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
12759 | else if (attr_form_is_section_offset (attr)) | |
12760 | dwarf2_complex_location_expr_complaint (); | |
12761 | else if (attr_form_is_block (attr)) | |
12762 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
12763 | else | |
12764 | dwarf2_complex_location_expr_complaint (); | |
12765 | ||
12766 | return 1; | |
12767 | } | |
12768 | ||
12769 | return 0; | |
12770 | } | |
12771 | ||
c906108c SS |
12772 | /* Add an aggregate field to the field list. */ |
12773 | ||
12774 | static void | |
107d2387 | 12775 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12776 | struct dwarf2_cu *cu) |
6e70227d | 12777 | { |
e7c27a73 | 12778 | struct objfile *objfile = cu->objfile; |
5e2b427d | 12779 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12780 | struct nextfield *new_field; |
12781 | struct attribute *attr; | |
12782 | struct field *fp; | |
15d034d0 | 12783 | const char *fieldname = ""; |
c906108c SS |
12784 | |
12785 | /* Allocate a new field list entry and link it in. */ | |
8d749320 | 12786 | new_field = XNEW (struct nextfield); |
b8c9b27d | 12787 | make_cleanup (xfree, new_field); |
c906108c | 12788 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
12789 | |
12790 | if (die->tag == DW_TAG_inheritance) | |
12791 | { | |
12792 | new_field->next = fip->baseclasses; | |
12793 | fip->baseclasses = new_field; | |
12794 | } | |
12795 | else | |
12796 | { | |
12797 | new_field->next = fip->fields; | |
12798 | fip->fields = new_field; | |
12799 | } | |
c906108c SS |
12800 | fip->nfields++; |
12801 | ||
e142c38c | 12802 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
12803 | if (attr) |
12804 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
12805 | else |
12806 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
12807 | if (new_field->accessibility != DW_ACCESS_public) |
12808 | fip->non_public_fields = 1; | |
60d5a603 | 12809 | |
e142c38c | 12810 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
12811 | if (attr) |
12812 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
12813 | else |
12814 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
12815 | |
12816 | fp = &new_field->field; | |
a9a9bd0f | 12817 | |
e142c38c | 12818 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 12819 | { |
74ac6d43 TT |
12820 | LONGEST offset; |
12821 | ||
a9a9bd0f | 12822 | /* Data member other than a C++ static data member. */ |
6e70227d | 12823 | |
c906108c | 12824 | /* Get type of field. */ |
e7c27a73 | 12825 | fp->type = die_type (die, cu); |
c906108c | 12826 | |
d6a843b5 | 12827 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 12828 | |
c906108c | 12829 | /* Get bit size of field (zero if none). */ |
e142c38c | 12830 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
12831 | if (attr) |
12832 | { | |
12833 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
12834 | } | |
12835 | else | |
12836 | { | |
12837 | FIELD_BITSIZE (*fp) = 0; | |
12838 | } | |
12839 | ||
12840 | /* Get bit offset of field. */ | |
74ac6d43 TT |
12841 | if (handle_data_member_location (die, cu, &offset)) |
12842 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 12843 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
12844 | if (attr) |
12845 | { | |
5e2b427d | 12846 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
12847 | { |
12848 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
12849 | additional bit offset from the MSB of the containing |
12850 | anonymous object to the MSB of the field. We don't | |
12851 | have to do anything special since we don't need to | |
12852 | know the size of the anonymous object. */ | |
f41f5e61 | 12853 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
12854 | } |
12855 | else | |
12856 | { | |
12857 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
12858 | MSB of the anonymous object, subtract off the number of |
12859 | bits from the MSB of the field to the MSB of the | |
12860 | object, and then subtract off the number of bits of | |
12861 | the field itself. The result is the bit offset of | |
12862 | the LSB of the field. */ | |
c906108c SS |
12863 | int anonymous_size; |
12864 | int bit_offset = DW_UNSND (attr); | |
12865 | ||
e142c38c | 12866 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12867 | if (attr) |
12868 | { | |
12869 | /* The size of the anonymous object containing | |
12870 | the bit field is explicit, so use the | |
12871 | indicated size (in bytes). */ | |
12872 | anonymous_size = DW_UNSND (attr); | |
12873 | } | |
12874 | else | |
12875 | { | |
12876 | /* The size of the anonymous object containing | |
12877 | the bit field must be inferred from the type | |
12878 | attribute of the data member containing the | |
12879 | bit field. */ | |
12880 | anonymous_size = TYPE_LENGTH (fp->type); | |
12881 | } | |
f41f5e61 PA |
12882 | SET_FIELD_BITPOS (*fp, |
12883 | (FIELD_BITPOS (*fp) | |
12884 | + anonymous_size * bits_per_byte | |
12885 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
12886 | } |
12887 | } | |
da5b30da AA |
12888 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
12889 | if (attr != NULL) | |
12890 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
12891 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
12892 | |
12893 | /* Get name of field. */ | |
39cbfefa DJ |
12894 | fieldname = dwarf2_name (die, cu); |
12895 | if (fieldname == NULL) | |
12896 | fieldname = ""; | |
d8151005 DJ |
12897 | |
12898 | /* The name is already allocated along with this objfile, so we don't | |
12899 | need to duplicate it for the type. */ | |
12900 | fp->name = fieldname; | |
c906108c SS |
12901 | |
12902 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 12903 | pointer or virtual base class pointer) to private. */ |
e142c38c | 12904 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 12905 | { |
d48cc9dd | 12906 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
12907 | new_field->accessibility = DW_ACCESS_private; |
12908 | fip->non_public_fields = 1; | |
12909 | } | |
12910 | } | |
a9a9bd0f | 12911 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 12912 | { |
a9a9bd0f DC |
12913 | /* C++ static member. */ |
12914 | ||
12915 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
12916 | is a declaration, but all versions of G++ as of this writing | |
12917 | (so through at least 3.2.1) incorrectly generate | |
12918 | DW_TAG_variable tags. */ | |
6e70227d | 12919 | |
ff355380 | 12920 | const char *physname; |
c906108c | 12921 | |
a9a9bd0f | 12922 | /* Get name of field. */ |
39cbfefa DJ |
12923 | fieldname = dwarf2_name (die, cu); |
12924 | if (fieldname == NULL) | |
c906108c SS |
12925 | return; |
12926 | ||
254e6b9e | 12927 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
12928 | if (attr |
12929 | /* Only create a symbol if this is an external value. | |
12930 | new_symbol checks this and puts the value in the global symbol | |
12931 | table, which we want. If it is not external, new_symbol | |
12932 | will try to put the value in cu->list_in_scope which is wrong. */ | |
12933 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
12934 | { |
12935 | /* A static const member, not much different than an enum as far as | |
12936 | we're concerned, except that we can support more types. */ | |
12937 | new_symbol (die, NULL, cu); | |
12938 | } | |
12939 | ||
2df3850c | 12940 | /* Get physical name. */ |
ff355380 | 12941 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 12942 | |
d8151005 DJ |
12943 | /* The name is already allocated along with this objfile, so we don't |
12944 | need to duplicate it for the type. */ | |
12945 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 12946 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 12947 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
12948 | } |
12949 | else if (die->tag == DW_TAG_inheritance) | |
12950 | { | |
74ac6d43 | 12951 | LONGEST offset; |
d4b96c9a | 12952 | |
74ac6d43 TT |
12953 | /* C++ base class field. */ |
12954 | if (handle_data_member_location (die, cu, &offset)) | |
12955 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 12956 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 12957 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
12958 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
12959 | fip->nbaseclasses++; | |
12960 | } | |
12961 | } | |
12962 | ||
98751a41 JK |
12963 | /* Add a typedef defined in the scope of the FIP's class. */ |
12964 | ||
12965 | static void | |
12966 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
12967 | struct dwarf2_cu *cu) | |
6e70227d | 12968 | { |
98751a41 | 12969 | struct typedef_field_list *new_field; |
98751a41 | 12970 | struct typedef_field *fp; |
98751a41 JK |
12971 | |
12972 | /* Allocate a new field list entry and link it in. */ | |
8d749320 | 12973 | new_field = XCNEW (struct typedef_field_list); |
98751a41 JK |
12974 | make_cleanup (xfree, new_field); |
12975 | ||
12976 | gdb_assert (die->tag == DW_TAG_typedef); | |
12977 | ||
12978 | fp = &new_field->field; | |
12979 | ||
12980 | /* Get name of field. */ | |
12981 | fp->name = dwarf2_name (die, cu); | |
12982 | if (fp->name == NULL) | |
12983 | return; | |
12984 | ||
12985 | fp->type = read_type_die (die, cu); | |
12986 | ||
12987 | new_field->next = fip->typedef_field_list; | |
12988 | fip->typedef_field_list = new_field; | |
12989 | fip->typedef_field_list_count++; | |
12990 | } | |
12991 | ||
c906108c SS |
12992 | /* Create the vector of fields, and attach it to the type. */ |
12993 | ||
12994 | static void | |
fba45db2 | 12995 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12996 | struct dwarf2_cu *cu) |
c906108c SS |
12997 | { |
12998 | int nfields = fip->nfields; | |
12999 | ||
13000 | /* Record the field count, allocate space for the array of fields, | |
13001 | and create blank accessibility bitfields if necessary. */ | |
13002 | TYPE_NFIELDS (type) = nfields; | |
13003 | TYPE_FIELDS (type) = (struct field *) | |
13004 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
13005 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
13006 | ||
b4ba55a1 | 13007 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
13008 | { |
13009 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
13010 | ||
13011 | TYPE_FIELD_PRIVATE_BITS (type) = | |
13012 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
13013 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
13014 | ||
13015 | TYPE_FIELD_PROTECTED_BITS (type) = | |
13016 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
13017 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
13018 | ||
774b6a14 TT |
13019 | TYPE_FIELD_IGNORE_BITS (type) = |
13020 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
13021 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
13022 | } |
13023 | ||
13024 | /* If the type has baseclasses, allocate and clear a bit vector for | |
13025 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 13026 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
13027 | { |
13028 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 13029 | unsigned char *pointer; |
c906108c SS |
13030 | |
13031 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 13032 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 13033 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
c906108c SS |
13034 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
13035 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
13036 | } | |
13037 | ||
3e43a32a MS |
13038 | /* Copy the saved-up fields into the field vector. Start from the head of |
13039 | the list, adding to the tail of the field array, so that they end up in | |
13040 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
13041 | while (nfields-- > 0) |
13042 | { | |
7d0ccb61 DJ |
13043 | struct nextfield *fieldp; |
13044 | ||
13045 | if (fip->fields) | |
13046 | { | |
13047 | fieldp = fip->fields; | |
13048 | fip->fields = fieldp->next; | |
13049 | } | |
13050 | else | |
13051 | { | |
13052 | fieldp = fip->baseclasses; | |
13053 | fip->baseclasses = fieldp->next; | |
13054 | } | |
13055 | ||
13056 | TYPE_FIELD (type, nfields) = fieldp->field; | |
13057 | switch (fieldp->accessibility) | |
c906108c | 13058 | { |
c5aa993b | 13059 | case DW_ACCESS_private: |
b4ba55a1 JB |
13060 | if (cu->language != language_ada) |
13061 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 13062 | break; |
c906108c | 13063 | |
c5aa993b | 13064 | case DW_ACCESS_protected: |
b4ba55a1 JB |
13065 | if (cu->language != language_ada) |
13066 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 13067 | break; |
c906108c | 13068 | |
c5aa993b JM |
13069 | case DW_ACCESS_public: |
13070 | break; | |
c906108c | 13071 | |
c5aa993b JM |
13072 | default: |
13073 | /* Unknown accessibility. Complain and treat it as public. */ | |
13074 | { | |
e2e0b3e5 | 13075 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 13076 | fieldp->accessibility); |
c5aa993b JM |
13077 | } |
13078 | break; | |
c906108c SS |
13079 | } |
13080 | if (nfields < fip->nbaseclasses) | |
13081 | { | |
7d0ccb61 | 13082 | switch (fieldp->virtuality) |
c906108c | 13083 | { |
c5aa993b JM |
13084 | case DW_VIRTUALITY_virtual: |
13085 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 13086 | if (cu->language == language_ada) |
a73c6dcd | 13087 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
13088 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
13089 | break; | |
c906108c SS |
13090 | } |
13091 | } | |
c906108c SS |
13092 | } |
13093 | } | |
13094 | ||
7d27a96d TT |
13095 | /* Return true if this member function is a constructor, false |
13096 | otherwise. */ | |
13097 | ||
13098 | static int | |
13099 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
13100 | { | |
13101 | const char *fieldname; | |
fe978cb0 | 13102 | const char *type_name; |
7d27a96d TT |
13103 | int len; |
13104 | ||
13105 | if (die->parent == NULL) | |
13106 | return 0; | |
13107 | ||
13108 | if (die->parent->tag != DW_TAG_structure_type | |
13109 | && die->parent->tag != DW_TAG_union_type | |
13110 | && die->parent->tag != DW_TAG_class_type) | |
13111 | return 0; | |
13112 | ||
13113 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
13114 | type_name = dwarf2_name (die->parent, cu); |
13115 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
13116 | return 0; |
13117 | ||
13118 | len = strlen (fieldname); | |
fe978cb0 PA |
13119 | return (strncmp (fieldname, type_name, len) == 0 |
13120 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
13121 | } |
13122 | ||
c906108c SS |
13123 | /* Add a member function to the proper fieldlist. */ |
13124 | ||
13125 | static void | |
107d2387 | 13126 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 13127 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 13128 | { |
e7c27a73 | 13129 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13130 | struct attribute *attr; |
13131 | struct fnfieldlist *flp; | |
13132 | int i; | |
13133 | struct fn_field *fnp; | |
15d034d0 | 13134 | const char *fieldname; |
c906108c | 13135 | struct nextfnfield *new_fnfield; |
f792889a | 13136 | struct type *this_type; |
60d5a603 | 13137 | enum dwarf_access_attribute accessibility; |
c906108c | 13138 | |
b4ba55a1 | 13139 | if (cu->language == language_ada) |
a73c6dcd | 13140 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 13141 | |
2df3850c | 13142 | /* Get name of member function. */ |
39cbfefa DJ |
13143 | fieldname = dwarf2_name (die, cu); |
13144 | if (fieldname == NULL) | |
2df3850c | 13145 | return; |
c906108c | 13146 | |
c906108c SS |
13147 | /* Look up member function name in fieldlist. */ |
13148 | for (i = 0; i < fip->nfnfields; i++) | |
13149 | { | |
27bfe10e | 13150 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
13151 | break; |
13152 | } | |
13153 | ||
13154 | /* Create new list element if necessary. */ | |
13155 | if (i < fip->nfnfields) | |
13156 | flp = &fip->fnfieldlists[i]; | |
13157 | else | |
13158 | { | |
13159 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13160 | { | |
13161 | fip->fnfieldlists = (struct fnfieldlist *) | |
13162 | xrealloc (fip->fnfieldlists, | |
13163 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13164 | * sizeof (struct fnfieldlist)); |
c906108c | 13165 | if (fip->nfnfields == 0) |
c13c43fd | 13166 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
13167 | } |
13168 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
13169 | flp->name = fieldname; | |
13170 | flp->length = 0; | |
13171 | flp->head = NULL; | |
3da10d80 | 13172 | i = fip->nfnfields++; |
c906108c SS |
13173 | } |
13174 | ||
13175 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 13176 | entry. */ |
8d749320 | 13177 | new_fnfield = XNEW (struct nextfnfield); |
b8c9b27d | 13178 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
13179 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
13180 | new_fnfield->next = flp->head; | |
13181 | flp->head = new_fnfield; | |
13182 | flp->length++; | |
13183 | ||
13184 | /* Fill in the member function field info. */ | |
13185 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
13186 | |
13187 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 13188 | if (cu->language == language_cplus) |
3da10d80 KS |
13189 | { |
13190 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
13191 | die, cu); | |
13192 | } | |
13193 | else | |
13194 | { | |
1d06ead6 | 13195 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
13196 | fnp->physname = physname ? physname : ""; |
13197 | } | |
13198 | ||
c906108c | 13199 | fnp->type = alloc_type (objfile); |
f792889a DJ |
13200 | this_type = read_type_die (die, cu); |
13201 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 13202 | { |
f792889a | 13203 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 13204 | |
f792889a | 13205 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
13206 | of the method itself (TYPE_CODE_METHOD). */ |
13207 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
13208 | TYPE_TARGET_TYPE (this_type), |
13209 | TYPE_FIELDS (this_type), | |
13210 | TYPE_NFIELDS (this_type), | |
13211 | TYPE_VARARGS (this_type)); | |
c906108c SS |
13212 | |
13213 | /* Handle static member functions. | |
c5aa993b | 13214 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
13215 | member functions. G++ helps GDB by marking the first |
13216 | parameter for non-static member functions (which is the this | |
13217 | pointer) as artificial. We obtain this information from | |
13218 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 13219 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
13220 | fnp->voffset = VOFFSET_STATIC; |
13221 | } | |
13222 | else | |
e2e0b3e5 | 13223 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 13224 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
13225 | |
13226 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 13227 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 13228 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 13229 | |
3e43a32a MS |
13230 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
13231 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
13232 | |
13233 | /* Get accessibility. */ | |
e142c38c | 13234 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 13235 | if (attr) |
aead7601 | 13236 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
13237 | else |
13238 | accessibility = dwarf2_default_access_attribute (die, cu); | |
13239 | switch (accessibility) | |
c906108c | 13240 | { |
60d5a603 JK |
13241 | case DW_ACCESS_private: |
13242 | fnp->is_private = 1; | |
13243 | break; | |
13244 | case DW_ACCESS_protected: | |
13245 | fnp->is_protected = 1; | |
13246 | break; | |
c906108c SS |
13247 | } |
13248 | ||
b02dede2 | 13249 | /* Check for artificial methods. */ |
e142c38c | 13250 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
13251 | if (attr && DW_UNSND (attr) != 0) |
13252 | fnp->is_artificial = 1; | |
13253 | ||
7d27a96d TT |
13254 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
13255 | ||
0d564a31 | 13256 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
13257 | function. For older versions of GCC, this is an offset in the |
13258 | appropriate virtual table, as specified by DW_AT_containing_type. | |
13259 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
13260 | to the object address. */ |
13261 | ||
e142c38c | 13262 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 13263 | if (attr) |
8e19ed76 | 13264 | { |
aec5aa8b | 13265 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 13266 | { |
aec5aa8b TT |
13267 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
13268 | { | |
13269 | /* Old-style GCC. */ | |
13270 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
13271 | } | |
13272 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
13273 | || (DW_BLOCK (attr)->size > 1 | |
13274 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
13275 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
13276 | { | |
aec5aa8b TT |
13277 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
13278 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
13279 | dwarf2_complex_location_expr_complaint (); | |
13280 | else | |
13281 | fnp->voffset /= cu->header.addr_size; | |
13282 | fnp->voffset += 2; | |
13283 | } | |
13284 | else | |
13285 | dwarf2_complex_location_expr_complaint (); | |
13286 | ||
13287 | if (!fnp->fcontext) | |
7e993ebf KS |
13288 | { |
13289 | /* If there is no `this' field and no DW_AT_containing_type, | |
13290 | we cannot actually find a base class context for the | |
13291 | vtable! */ | |
13292 | if (TYPE_NFIELDS (this_type) == 0 | |
13293 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
13294 | { | |
13295 | complaint (&symfile_complaints, | |
13296 | _("cannot determine context for virtual member " | |
13297 | "function \"%s\" (offset %d)"), | |
9c541725 | 13298 | fieldname, to_underlying (die->sect_off)); |
7e993ebf KS |
13299 | } |
13300 | else | |
13301 | { | |
13302 | fnp->fcontext | |
13303 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
13304 | } | |
13305 | } | |
aec5aa8b | 13306 | } |
3690dd37 | 13307 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 13308 | { |
4d3c2250 | 13309 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
13310 | } |
13311 | else | |
13312 | { | |
4d3c2250 KB |
13313 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
13314 | fieldname); | |
8e19ed76 | 13315 | } |
0d564a31 | 13316 | } |
d48cc9dd DJ |
13317 | else |
13318 | { | |
13319 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
13320 | if (attr && DW_UNSND (attr)) | |
13321 | { | |
13322 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
13323 | complaint (&symfile_complaints, | |
3e43a32a MS |
13324 | _("Member function \"%s\" (offset %d) is virtual " |
13325 | "but the vtable offset is not specified"), | |
9c541725 | 13326 | fieldname, to_underlying (die->sect_off)); |
9655fd1a | 13327 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
13328 | TYPE_CPLUS_DYNAMIC (type) = 1; |
13329 | } | |
13330 | } | |
c906108c SS |
13331 | } |
13332 | ||
13333 | /* Create the vector of member function fields, and attach it to the type. */ | |
13334 | ||
13335 | static void | |
fba45db2 | 13336 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 13337 | struct dwarf2_cu *cu) |
c906108c SS |
13338 | { |
13339 | struct fnfieldlist *flp; | |
c906108c SS |
13340 | int i; |
13341 | ||
b4ba55a1 | 13342 | if (cu->language == language_ada) |
a73c6dcd | 13343 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 13344 | |
c906108c SS |
13345 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
13346 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
13347 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
13348 | ||
13349 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
13350 | { | |
13351 | struct nextfnfield *nfp = flp->head; | |
13352 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
13353 | int k; | |
13354 | ||
13355 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
13356 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
13357 | fn_flp->fn_fields = (struct fn_field *) | |
13358 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
13359 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 13360 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
13361 | } |
13362 | ||
13363 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
13364 | } |
13365 | ||
1168df01 JB |
13366 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
13367 | language, zero otherwise. */ | |
13368 | static int | |
13369 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
13370 | { | |
13371 | static const char vptr[] = "_vptr"; | |
987504bb | 13372 | static const char vtable[] = "vtable"; |
1168df01 | 13373 | |
9c37b5ae TT |
13374 | /* Look for the C++ form of the vtable. */ |
13375 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
13376 | return 1; |
13377 | ||
13378 | return 0; | |
13379 | } | |
13380 | ||
c0dd20ea | 13381 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
13382 | functions, with the ABI-specified layout. If TYPE describes |
13383 | such a structure, smash it into a member function type. | |
61049d3b DJ |
13384 | |
13385 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
13386 | This is GCC PR debug/28767. */ | |
c0dd20ea | 13387 | |
0b92b5bb TT |
13388 | static void |
13389 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 13390 | { |
09e2d7c7 | 13391 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
13392 | |
13393 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
13394 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
13395 | return; | |
c0dd20ea DJ |
13396 | |
13397 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
13398 | if (TYPE_FIELD_NAME (type, 0) == NULL |
13399 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
13400 | || TYPE_FIELD_NAME (type, 1) == NULL | |
13401 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
13402 | return; | |
c0dd20ea DJ |
13403 | |
13404 | /* Find the type of the method. */ | |
0b92b5bb | 13405 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
13406 | if (pfn_type == NULL |
13407 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
13408 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 13409 | return; |
c0dd20ea DJ |
13410 | |
13411 | /* Look for the "this" argument. */ | |
13412 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
13413 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 13414 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 13415 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 13416 | return; |
c0dd20ea | 13417 | |
09e2d7c7 | 13418 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 13419 | new_type = alloc_type (objfile); |
09e2d7c7 | 13420 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
13421 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
13422 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 13423 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 13424 | } |
1168df01 | 13425 | |
685b1105 JK |
13426 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
13427 | (icc). */ | |
13428 | ||
13429 | static int | |
13430 | producer_is_icc (struct dwarf2_cu *cu) | |
13431 | { | |
13432 | if (!cu->checked_producer) | |
13433 | check_producer (cu); | |
13434 | ||
13435 | return cu->producer_is_icc; | |
13436 | } | |
13437 | ||
c906108c | 13438 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
13439 | (definition) to create a type for the structure or union. Fill in |
13440 | the type's name and general properties; the members will not be | |
83655187 DE |
13441 | processed until process_structure_scope. A symbol table entry for |
13442 | the type will also not be done until process_structure_scope (assuming | |
13443 | the type has a name). | |
c906108c | 13444 | |
c767944b DJ |
13445 | NOTE: we need to call these functions regardless of whether or not the |
13446 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 13447 | structure or union. This gets the type entered into our set of |
83655187 | 13448 | user defined types. */ |
c906108c | 13449 | |
f792889a | 13450 | static struct type * |
134d01f1 | 13451 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13452 | { |
e7c27a73 | 13453 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13454 | struct type *type; |
13455 | struct attribute *attr; | |
15d034d0 | 13456 | const char *name; |
c906108c | 13457 | |
348e048f DE |
13458 | /* If the definition of this type lives in .debug_types, read that type. |
13459 | Don't follow DW_AT_specification though, that will take us back up | |
13460 | the chain and we want to go down. */ | |
45e58e77 | 13461 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13462 | if (attr) |
13463 | { | |
ac9ec31b | 13464 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13465 | |
ac9ec31b | 13466 | /* The type's CU may not be the same as CU. |
02142a6c | 13467 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13468 | return set_die_type (die, type, cu); |
13469 | } | |
13470 | ||
c0dd20ea | 13471 | type = alloc_type (objfile); |
c906108c | 13472 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 13473 | |
39cbfefa DJ |
13474 | name = dwarf2_name (die, cu); |
13475 | if (name != NULL) | |
c906108c | 13476 | { |
987504bb | 13477 | if (cu->language == language_cplus |
c44af4eb TT |
13478 | || cu->language == language_d |
13479 | || cu->language == language_rust) | |
63d06c5c | 13480 | { |
15d034d0 | 13481 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
13482 | |
13483 | /* dwarf2_full_name might have already finished building the DIE's | |
13484 | type. If so, there is no need to continue. */ | |
13485 | if (get_die_type (die, cu) != NULL) | |
13486 | return get_die_type (die, cu); | |
13487 | ||
13488 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
13489 | if (die->tag == DW_TAG_structure_type |
13490 | || die->tag == DW_TAG_class_type) | |
13491 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
13492 | } |
13493 | else | |
13494 | { | |
d8151005 DJ |
13495 | /* The name is already allocated along with this objfile, so |
13496 | we don't need to duplicate it for the type. */ | |
7d455152 | 13497 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
13498 | if (die->tag == DW_TAG_class_type) |
13499 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 13500 | } |
c906108c SS |
13501 | } |
13502 | ||
13503 | if (die->tag == DW_TAG_structure_type) | |
13504 | { | |
13505 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
13506 | } | |
13507 | else if (die->tag == DW_TAG_union_type) | |
13508 | { | |
13509 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
13510 | } | |
13511 | else | |
13512 | { | |
4753d33b | 13513 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
13514 | } |
13515 | ||
0cc2414c TT |
13516 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
13517 | TYPE_DECLARED_CLASS (type) = 1; | |
13518 | ||
e142c38c | 13519 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13520 | if (attr) |
13521 | { | |
155bfbd3 JB |
13522 | if (attr_form_is_constant (attr)) |
13523 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13524 | else | |
13525 | { | |
13526 | /* For the moment, dynamic type sizes are not supported | |
13527 | by GDB's struct type. The actual size is determined | |
13528 | on-demand when resolving the type of a given object, | |
13529 | so set the type's length to zero for now. Otherwise, | |
13530 | we record an expression as the length, and that expression | |
13531 | could lead to a very large value, which could eventually | |
13532 | lead to us trying to allocate that much memory when creating | |
13533 | a value of that type. */ | |
13534 | TYPE_LENGTH (type) = 0; | |
13535 | } | |
c906108c SS |
13536 | } |
13537 | else | |
13538 | { | |
13539 | TYPE_LENGTH (type) = 0; | |
13540 | } | |
13541 | ||
422b1cb0 | 13542 | if (producer_is_icc (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 JK |
13543 | { |
13544 | /* ICC does not output the required DW_AT_declaration | |
13545 | on incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 13546 | TYPE_STUB (type) = 1; |
685b1105 JK |
13547 | } |
13548 | else | |
13549 | TYPE_STUB_SUPPORTED (type) = 1; | |
13550 | ||
dc718098 | 13551 | if (die_is_declaration (die, cu)) |
876cecd0 | 13552 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
13553 | else if (attr == NULL && die->child == NULL |
13554 | && producer_is_realview (cu->producer)) | |
13555 | /* RealView does not output the required DW_AT_declaration | |
13556 | on incomplete types. */ | |
13557 | TYPE_STUB (type) = 1; | |
dc718098 | 13558 | |
c906108c SS |
13559 | /* We need to add the type field to the die immediately so we don't |
13560 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 13561 | type within the structure itself. */ |
1c379e20 | 13562 | set_die_type (die, type, cu); |
c906108c | 13563 | |
7e314c57 JK |
13564 | /* set_die_type should be already done. */ |
13565 | set_descriptive_type (type, die, cu); | |
13566 | ||
c767944b DJ |
13567 | return type; |
13568 | } | |
13569 | ||
13570 | /* Finish creating a structure or union type, including filling in | |
13571 | its members and creating a symbol for it. */ | |
13572 | ||
13573 | static void | |
13574 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13575 | { | |
13576 | struct objfile *objfile = cu->objfile; | |
ca040673 | 13577 | struct die_info *child_die; |
c767944b DJ |
13578 | struct type *type; |
13579 | ||
13580 | type = get_die_type (die, cu); | |
13581 | if (type == NULL) | |
13582 | type = read_structure_type (die, cu); | |
13583 | ||
e142c38c | 13584 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
13585 | { |
13586 | struct field_info fi; | |
34eaf542 | 13587 | VEC (symbolp) *template_args = NULL; |
c767944b | 13588 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
13589 | |
13590 | memset (&fi, 0, sizeof (struct field_info)); | |
13591 | ||
639d11d3 | 13592 | child_die = die->child; |
c906108c SS |
13593 | |
13594 | while (child_die && child_die->tag) | |
13595 | { | |
a9a9bd0f DC |
13596 | if (child_die->tag == DW_TAG_member |
13597 | || child_die->tag == DW_TAG_variable) | |
c906108c | 13598 | { |
a9a9bd0f DC |
13599 | /* NOTE: carlton/2002-11-05: A C++ static data member |
13600 | should be a DW_TAG_member that is a declaration, but | |
13601 | all versions of G++ as of this writing (so through at | |
13602 | least 3.2.1) incorrectly generate DW_TAG_variable | |
13603 | tags for them instead. */ | |
e7c27a73 | 13604 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13605 | } |
8713b1b1 | 13606 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 13607 | { |
e98c9e7c TT |
13608 | /* Rust doesn't have member functions in the C++ sense. |
13609 | However, it does emit ordinary functions as children | |
13610 | of a struct DIE. */ | |
13611 | if (cu->language == language_rust) | |
13612 | read_func_scope (child_die, cu); | |
13613 | else | |
13614 | { | |
13615 | /* C++ member function. */ | |
13616 | dwarf2_add_member_fn (&fi, child_die, type, cu); | |
13617 | } | |
c906108c SS |
13618 | } |
13619 | else if (child_die->tag == DW_TAG_inheritance) | |
13620 | { | |
13621 | /* C++ base class field. */ | |
e7c27a73 | 13622 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 13623 | } |
98751a41 JK |
13624 | else if (child_die->tag == DW_TAG_typedef) |
13625 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
13626 | else if (child_die->tag == DW_TAG_template_type_param |
13627 | || child_die->tag == DW_TAG_template_value_param) | |
13628 | { | |
13629 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13630 | ||
f1078f66 DJ |
13631 | if (arg != NULL) |
13632 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
13633 | } |
13634 | ||
c906108c SS |
13635 | child_die = sibling_die (child_die); |
13636 | } | |
13637 | ||
34eaf542 TT |
13638 | /* Attach template arguments to type. */ |
13639 | if (! VEC_empty (symbolp, template_args)) | |
13640 | { | |
13641 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
13642 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13643 | = VEC_length (symbolp, template_args); | |
13644 | TYPE_TEMPLATE_ARGUMENTS (type) | |
8d749320 SM |
13645 | = XOBNEWVEC (&objfile->objfile_obstack, |
13646 | struct symbol *, | |
13647 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 TT |
13648 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
13649 | VEC_address (symbolp, template_args), | |
13650 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
13651 | * sizeof (struct symbol *))); | |
13652 | VEC_free (symbolp, template_args); | |
13653 | } | |
13654 | ||
c906108c SS |
13655 | /* Attach fields and member functions to the type. */ |
13656 | if (fi.nfields) | |
e7c27a73 | 13657 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
13658 | if (fi.nfnfields) |
13659 | { | |
e7c27a73 | 13660 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 13661 | |
c5aa993b | 13662 | /* Get the type which refers to the base class (possibly this |
c906108c | 13663 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
13664 | class from the DW_AT_containing_type attribute. This use of |
13665 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 13666 | |
e142c38c | 13667 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 13668 | { |
e7c27a73 | 13669 | struct type *t = die_containing_type (die, cu); |
c906108c | 13670 | |
ae6ae975 | 13671 | set_type_vptr_basetype (type, t); |
c906108c SS |
13672 | if (type == t) |
13673 | { | |
c906108c SS |
13674 | int i; |
13675 | ||
13676 | /* Our own class provides vtbl ptr. */ | |
13677 | for (i = TYPE_NFIELDS (t) - 1; | |
13678 | i >= TYPE_N_BASECLASSES (t); | |
13679 | --i) | |
13680 | { | |
0d5cff50 | 13681 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 13682 | |
1168df01 | 13683 | if (is_vtable_name (fieldname, cu)) |
c906108c | 13684 | { |
ae6ae975 | 13685 | set_type_vptr_fieldno (type, i); |
c906108c SS |
13686 | break; |
13687 | } | |
13688 | } | |
13689 | ||
13690 | /* Complain if virtual function table field not found. */ | |
13691 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 13692 | complaint (&symfile_complaints, |
3e43a32a MS |
13693 | _("virtual function table pointer " |
13694 | "not found when defining class '%s'"), | |
4d3c2250 KB |
13695 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
13696 | ""); | |
c906108c SS |
13697 | } |
13698 | else | |
13699 | { | |
ae6ae975 | 13700 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
13701 | } |
13702 | } | |
f6235d4c | 13703 | else if (cu->producer |
61012eef | 13704 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
13705 | { |
13706 | /* The IBM XLC compiler does not provide direct indication | |
13707 | of the containing type, but the vtable pointer is | |
13708 | always named __vfp. */ | |
13709 | ||
13710 | int i; | |
13711 | ||
13712 | for (i = TYPE_NFIELDS (type) - 1; | |
13713 | i >= TYPE_N_BASECLASSES (type); | |
13714 | --i) | |
13715 | { | |
13716 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
13717 | { | |
ae6ae975 DE |
13718 | set_type_vptr_fieldno (type, i); |
13719 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
13720 | break; |
13721 | } | |
13722 | } | |
13723 | } | |
c906108c | 13724 | } |
98751a41 JK |
13725 | |
13726 | /* Copy fi.typedef_field_list linked list elements content into the | |
13727 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
13728 | if (fi.typedef_field_list) | |
13729 | { | |
13730 | int i = fi.typedef_field_list_count; | |
13731 | ||
a0d7a4ff | 13732 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 13733 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
224c3ddb SM |
13734 | = ((struct typedef_field *) |
13735 | TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i)); | |
98751a41 JK |
13736 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; |
13737 | ||
13738 | /* Reverse the list order to keep the debug info elements order. */ | |
13739 | while (--i >= 0) | |
13740 | { | |
13741 | struct typedef_field *dest, *src; | |
6e70227d | 13742 | |
98751a41 JK |
13743 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
13744 | src = &fi.typedef_field_list->field; | |
13745 | fi.typedef_field_list = fi.typedef_field_list->next; | |
13746 | *dest = *src; | |
13747 | } | |
13748 | } | |
c767944b DJ |
13749 | |
13750 | do_cleanups (back_to); | |
c906108c | 13751 | } |
63d06c5c | 13752 | |
bb5ed363 | 13753 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 13754 | |
90aeadfc DC |
13755 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
13756 | snapshots) has been known to create a die giving a declaration | |
13757 | for a class that has, as a child, a die giving a definition for a | |
13758 | nested class. So we have to process our children even if the | |
13759 | current die is a declaration. Normally, of course, a declaration | |
13760 | won't have any children at all. */ | |
134d01f1 | 13761 | |
ca040673 DE |
13762 | child_die = die->child; |
13763 | ||
90aeadfc DC |
13764 | while (child_die != NULL && child_die->tag) |
13765 | { | |
13766 | if (child_die->tag == DW_TAG_member | |
13767 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
13768 | || child_die->tag == DW_TAG_inheritance |
13769 | || child_die->tag == DW_TAG_template_value_param | |
13770 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 13771 | { |
90aeadfc | 13772 | /* Do nothing. */ |
134d01f1 | 13773 | } |
90aeadfc DC |
13774 | else |
13775 | process_die (child_die, cu); | |
134d01f1 | 13776 | |
90aeadfc | 13777 | child_die = sibling_die (child_die); |
134d01f1 DJ |
13778 | } |
13779 | ||
fa4028e9 JB |
13780 | /* Do not consider external references. According to the DWARF standard, |
13781 | these DIEs are identified by the fact that they have no byte_size | |
13782 | attribute, and a declaration attribute. */ | |
13783 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
13784 | || !die_is_declaration (die, cu)) | |
c767944b | 13785 | new_symbol (die, type, cu); |
134d01f1 DJ |
13786 | } |
13787 | ||
55426c9d JB |
13788 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
13789 | update TYPE using some information only available in DIE's children. */ | |
13790 | ||
13791 | static void | |
13792 | update_enumeration_type_from_children (struct die_info *die, | |
13793 | struct type *type, | |
13794 | struct dwarf2_cu *cu) | |
13795 | { | |
13796 | struct obstack obstack; | |
60f7655a | 13797 | struct die_info *child_die; |
55426c9d JB |
13798 | int unsigned_enum = 1; |
13799 | int flag_enum = 1; | |
13800 | ULONGEST mask = 0; | |
13801 | struct cleanup *old_chain; | |
13802 | ||
13803 | obstack_init (&obstack); | |
13804 | old_chain = make_cleanup_obstack_free (&obstack); | |
13805 | ||
60f7655a DE |
13806 | for (child_die = die->child; |
13807 | child_die != NULL && child_die->tag; | |
13808 | child_die = sibling_die (child_die)) | |
55426c9d JB |
13809 | { |
13810 | struct attribute *attr; | |
13811 | LONGEST value; | |
13812 | const gdb_byte *bytes; | |
13813 | struct dwarf2_locexpr_baton *baton; | |
13814 | const char *name; | |
60f7655a | 13815 | |
55426c9d JB |
13816 | if (child_die->tag != DW_TAG_enumerator) |
13817 | continue; | |
13818 | ||
13819 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
13820 | if (attr == NULL) | |
13821 | continue; | |
13822 | ||
13823 | name = dwarf2_name (child_die, cu); | |
13824 | if (name == NULL) | |
13825 | name = "<anonymous enumerator>"; | |
13826 | ||
13827 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
13828 | &value, &bytes, &baton); | |
13829 | if (value < 0) | |
13830 | { | |
13831 | unsigned_enum = 0; | |
13832 | flag_enum = 0; | |
13833 | } | |
13834 | else if ((mask & value) != 0) | |
13835 | flag_enum = 0; | |
13836 | else | |
13837 | mask |= value; | |
13838 | ||
13839 | /* If we already know that the enum type is neither unsigned, nor | |
13840 | a flag type, no need to look at the rest of the enumerates. */ | |
13841 | if (!unsigned_enum && !flag_enum) | |
13842 | break; | |
55426c9d JB |
13843 | } |
13844 | ||
13845 | if (unsigned_enum) | |
13846 | TYPE_UNSIGNED (type) = 1; | |
13847 | if (flag_enum) | |
13848 | TYPE_FLAG_ENUM (type) = 1; | |
13849 | ||
13850 | do_cleanups (old_chain); | |
13851 | } | |
13852 | ||
134d01f1 DJ |
13853 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
13854 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 13855 | |
f792889a | 13856 | static struct type * |
134d01f1 | 13857 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13858 | { |
e7c27a73 | 13859 | struct objfile *objfile = cu->objfile; |
c906108c | 13860 | struct type *type; |
c906108c | 13861 | struct attribute *attr; |
0114d602 | 13862 | const char *name; |
134d01f1 | 13863 | |
348e048f DE |
13864 | /* If the definition of this type lives in .debug_types, read that type. |
13865 | Don't follow DW_AT_specification though, that will take us back up | |
13866 | the chain and we want to go down. */ | |
45e58e77 | 13867 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13868 | if (attr) |
13869 | { | |
ac9ec31b | 13870 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13871 | |
ac9ec31b | 13872 | /* The type's CU may not be the same as CU. |
02142a6c | 13873 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13874 | return set_die_type (die, type, cu); |
13875 | } | |
13876 | ||
c906108c SS |
13877 | type = alloc_type (objfile); |
13878 | ||
13879 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 13880 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 13881 | if (name != NULL) |
7d455152 | 13882 | TYPE_TAG_NAME (type) = name; |
c906108c | 13883 | |
0626fc76 TT |
13884 | attr = dwarf2_attr (die, DW_AT_type, cu); |
13885 | if (attr != NULL) | |
13886 | { | |
13887 | struct type *underlying_type = die_type (die, cu); | |
13888 | ||
13889 | TYPE_TARGET_TYPE (type) = underlying_type; | |
13890 | } | |
13891 | ||
e142c38c | 13892 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13893 | if (attr) |
13894 | { | |
13895 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13896 | } | |
13897 | else | |
13898 | { | |
13899 | TYPE_LENGTH (type) = 0; | |
13900 | } | |
13901 | ||
137033e9 JB |
13902 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
13903 | declared as private in the package spec, and then defined only | |
13904 | inside the package body. Such types are known as Taft Amendment | |
13905 | Types. When another package uses such a type, an incomplete DIE | |
13906 | may be generated by the compiler. */ | |
02eb380e | 13907 | if (die_is_declaration (die, cu)) |
876cecd0 | 13908 | TYPE_STUB (type) = 1; |
02eb380e | 13909 | |
0626fc76 TT |
13910 | /* Finish the creation of this type by using the enum's children. |
13911 | We must call this even when the underlying type has been provided | |
13912 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
13913 | update_enumeration_type_from_children (die, type, cu); |
13914 | ||
0626fc76 TT |
13915 | /* If this type has an underlying type that is not a stub, then we |
13916 | may use its attributes. We always use the "unsigned" attribute | |
13917 | in this situation, because ordinarily we guess whether the type | |
13918 | is unsigned -- but the guess can be wrong and the underlying type | |
13919 | can tell us the reality. However, we defer to a local size | |
13920 | attribute if one exists, because this lets the compiler override | |
13921 | the underlying type if needed. */ | |
13922 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
13923 | { | |
13924 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
13925 | if (TYPE_LENGTH (type) == 0) | |
13926 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
13927 | } | |
13928 | ||
3d567982 TT |
13929 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
13930 | ||
f792889a | 13931 | return set_die_type (die, type, cu); |
134d01f1 DJ |
13932 | } |
13933 | ||
13934 | /* Given a pointer to a die which begins an enumeration, process all | |
13935 | the dies that define the members of the enumeration, and create the | |
13936 | symbol for the enumeration type. | |
13937 | ||
13938 | NOTE: We reverse the order of the element list. */ | |
13939 | ||
13940 | static void | |
13941 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13942 | { | |
f792889a | 13943 | struct type *this_type; |
134d01f1 | 13944 | |
f792889a DJ |
13945 | this_type = get_die_type (die, cu); |
13946 | if (this_type == NULL) | |
13947 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 13948 | |
639d11d3 | 13949 | if (die->child != NULL) |
c906108c | 13950 | { |
9dc481d3 DE |
13951 | struct die_info *child_die; |
13952 | struct symbol *sym; | |
13953 | struct field *fields = NULL; | |
13954 | int num_fields = 0; | |
15d034d0 | 13955 | const char *name; |
9dc481d3 | 13956 | |
639d11d3 | 13957 | child_die = die->child; |
c906108c SS |
13958 | while (child_die && child_die->tag) |
13959 | { | |
13960 | if (child_die->tag != DW_TAG_enumerator) | |
13961 | { | |
e7c27a73 | 13962 | process_die (child_die, cu); |
c906108c SS |
13963 | } |
13964 | else | |
13965 | { | |
39cbfefa DJ |
13966 | name = dwarf2_name (child_die, cu); |
13967 | if (name) | |
c906108c | 13968 | { |
f792889a | 13969 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
13970 | |
13971 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13972 | { | |
13973 | fields = (struct field *) | |
13974 | xrealloc (fields, | |
13975 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13976 | * sizeof (struct field)); |
c906108c SS |
13977 | } |
13978 | ||
3567439c | 13979 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 13980 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 13981 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
13982 | FIELD_BITSIZE (fields[num_fields]) = 0; |
13983 | ||
13984 | num_fields++; | |
13985 | } | |
13986 | } | |
13987 | ||
13988 | child_die = sibling_die (child_die); | |
13989 | } | |
13990 | ||
13991 | if (num_fields) | |
13992 | { | |
f792889a DJ |
13993 | TYPE_NFIELDS (this_type) = num_fields; |
13994 | TYPE_FIELDS (this_type) = (struct field *) | |
13995 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
13996 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 13997 | sizeof (struct field) * num_fields); |
b8c9b27d | 13998 | xfree (fields); |
c906108c | 13999 | } |
c906108c | 14000 | } |
134d01f1 | 14001 | |
6c83ed52 TT |
14002 | /* If we are reading an enum from a .debug_types unit, and the enum |
14003 | is a declaration, and the enum is not the signatured type in the | |
14004 | unit, then we do not want to add a symbol for it. Adding a | |
14005 | symbol would in some cases obscure the true definition of the | |
14006 | enum, giving users an incomplete type when the definition is | |
14007 | actually available. Note that we do not want to do this for all | |
14008 | enums which are just declarations, because C++0x allows forward | |
14009 | enum declarations. */ | |
3019eac3 | 14010 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
14011 | && die_is_declaration (die, cu)) |
14012 | { | |
52dc124a | 14013 | struct signatured_type *sig_type; |
6c83ed52 | 14014 | |
c0f78cd4 | 14015 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
14016 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
14017 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
14018 | return; |
14019 | } | |
14020 | ||
f792889a | 14021 | new_symbol (die, this_type, cu); |
c906108c SS |
14022 | } |
14023 | ||
14024 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
14025 | the DIE's type field. For now, this only handles one dimensional | |
14026 | arrays. */ | |
14027 | ||
f792889a | 14028 | static struct type * |
e7c27a73 | 14029 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14030 | { |
e7c27a73 | 14031 | struct objfile *objfile = cu->objfile; |
c906108c | 14032 | struct die_info *child_die; |
7e314c57 | 14033 | struct type *type; |
c906108c SS |
14034 | struct type *element_type, *range_type, *index_type; |
14035 | struct type **range_types = NULL; | |
14036 | struct attribute *attr; | |
14037 | int ndim = 0; | |
14038 | struct cleanup *back_to; | |
15d034d0 | 14039 | const char *name; |
dc53a7ad | 14040 | unsigned int bit_stride = 0; |
c906108c | 14041 | |
e7c27a73 | 14042 | element_type = die_type (die, cu); |
c906108c | 14043 | |
7e314c57 JK |
14044 | /* The die_type call above may have already set the type for this DIE. */ |
14045 | type = get_die_type (die, cu); | |
14046 | if (type) | |
14047 | return type; | |
14048 | ||
dc53a7ad JB |
14049 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
14050 | if (attr != NULL) | |
14051 | bit_stride = DW_UNSND (attr) * 8; | |
14052 | ||
14053 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
14054 | if (attr != NULL) | |
14055 | bit_stride = DW_UNSND (attr); | |
14056 | ||
c906108c SS |
14057 | /* Irix 6.2 native cc creates array types without children for |
14058 | arrays with unspecified length. */ | |
639d11d3 | 14059 | if (die->child == NULL) |
c906108c | 14060 | { |
46bf5051 | 14061 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 14062 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad JB |
14063 | type = create_array_type_with_stride (NULL, element_type, range_type, |
14064 | bit_stride); | |
f792889a | 14065 | return set_die_type (die, type, cu); |
c906108c SS |
14066 | } |
14067 | ||
14068 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 14069 | child_die = die->child; |
c906108c SS |
14070 | while (child_die && child_die->tag) |
14071 | { | |
14072 | if (child_die->tag == DW_TAG_subrange_type) | |
14073 | { | |
f792889a | 14074 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 14075 | |
f792889a | 14076 | if (child_type != NULL) |
a02abb62 | 14077 | { |
0963b4bd MS |
14078 | /* The range type was succesfully read. Save it for the |
14079 | array type creation. */ | |
a02abb62 JB |
14080 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
14081 | { | |
14082 | range_types = (struct type **) | |
14083 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
14084 | * sizeof (struct type *)); | |
14085 | if (ndim == 0) | |
14086 | make_cleanup (free_current_contents, &range_types); | |
14087 | } | |
f792889a | 14088 | range_types[ndim++] = child_type; |
a02abb62 | 14089 | } |
c906108c SS |
14090 | } |
14091 | child_die = sibling_die (child_die); | |
14092 | } | |
14093 | ||
14094 | /* Dwarf2 dimensions are output from left to right, create the | |
14095 | necessary array types in backwards order. */ | |
7ca2d3a3 | 14096 | |
c906108c | 14097 | type = element_type; |
7ca2d3a3 DL |
14098 | |
14099 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
14100 | { | |
14101 | int i = 0; | |
9a619af0 | 14102 | |
7ca2d3a3 | 14103 | while (i < ndim) |
dc53a7ad JB |
14104 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
14105 | bit_stride); | |
7ca2d3a3 DL |
14106 | } |
14107 | else | |
14108 | { | |
14109 | while (ndim-- > 0) | |
dc53a7ad JB |
14110 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
14111 | bit_stride); | |
7ca2d3a3 | 14112 | } |
c906108c | 14113 | |
f5f8a009 EZ |
14114 | /* Understand Dwarf2 support for vector types (like they occur on |
14115 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
14116 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
14117 | custom vendor extension. The main difference between a regular | |
14118 | array and the vector variant is that vectors are passed by value | |
14119 | to functions. */ | |
e142c38c | 14120 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 14121 | if (attr) |
ea37ba09 | 14122 | make_vector_type (type); |
f5f8a009 | 14123 | |
dbc98a8b KW |
14124 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
14125 | implementation may choose to implement triple vectors using this | |
14126 | attribute. */ | |
14127 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
14128 | if (attr) | |
14129 | { | |
14130 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
14131 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
14132 | else | |
3e43a32a MS |
14133 | complaint (&symfile_complaints, |
14134 | _("DW_AT_byte_size for array type smaller " | |
14135 | "than the total size of elements")); | |
dbc98a8b KW |
14136 | } |
14137 | ||
39cbfefa DJ |
14138 | name = dwarf2_name (die, cu); |
14139 | if (name) | |
14140 | TYPE_NAME (type) = name; | |
6e70227d | 14141 | |
0963b4bd | 14142 | /* Install the type in the die. */ |
7e314c57 JK |
14143 | set_die_type (die, type, cu); |
14144 | ||
14145 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
14146 | set_descriptive_type (type, die, cu); |
14147 | ||
c906108c SS |
14148 | do_cleanups (back_to); |
14149 | ||
7e314c57 | 14150 | return type; |
c906108c SS |
14151 | } |
14152 | ||
7ca2d3a3 | 14153 | static enum dwarf_array_dim_ordering |
6e70227d | 14154 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
14155 | { |
14156 | struct attribute *attr; | |
14157 | ||
14158 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
14159 | ||
aead7601 SM |
14160 | if (attr) |
14161 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 14162 | |
0963b4bd MS |
14163 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
14164 | opposite order to the dwarf2 specification, but data is still | |
14165 | laid out as per normal fortran. | |
7ca2d3a3 | 14166 | |
0963b4bd MS |
14167 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
14168 | version checking. */ | |
7ca2d3a3 | 14169 | |
905e0470 PM |
14170 | if (cu->language == language_fortran |
14171 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
14172 | { |
14173 | return DW_ORD_row_major; | |
14174 | } | |
14175 | ||
6e70227d | 14176 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
14177 | { |
14178 | case array_column_major: | |
14179 | return DW_ORD_col_major; | |
14180 | case array_row_major: | |
14181 | default: | |
14182 | return DW_ORD_row_major; | |
14183 | }; | |
14184 | } | |
14185 | ||
72019c9c | 14186 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 14187 | the DIE's type field. */ |
72019c9c | 14188 | |
f792889a | 14189 | static struct type * |
72019c9c GM |
14190 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
14191 | { | |
7e314c57 JK |
14192 | struct type *domain_type, *set_type; |
14193 | struct attribute *attr; | |
f792889a | 14194 | |
7e314c57 JK |
14195 | domain_type = die_type (die, cu); |
14196 | ||
14197 | /* The die_type call above may have already set the type for this DIE. */ | |
14198 | set_type = get_die_type (die, cu); | |
14199 | if (set_type) | |
14200 | return set_type; | |
14201 | ||
14202 | set_type = create_set_type (NULL, domain_type); | |
14203 | ||
14204 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
14205 | if (attr) |
14206 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 14207 | |
f792889a | 14208 | return set_die_type (die, set_type, cu); |
72019c9c | 14209 | } |
7ca2d3a3 | 14210 | |
0971de02 TT |
14211 | /* A helper for read_common_block that creates a locexpr baton. |
14212 | SYM is the symbol which we are marking as computed. | |
14213 | COMMON_DIE is the DIE for the common block. | |
14214 | COMMON_LOC is the location expression attribute for the common | |
14215 | block itself. | |
14216 | MEMBER_LOC is the location expression attribute for the particular | |
14217 | member of the common block that we are processing. | |
14218 | CU is the CU from which the above come. */ | |
14219 | ||
14220 | static void | |
14221 | mark_common_block_symbol_computed (struct symbol *sym, | |
14222 | struct die_info *common_die, | |
14223 | struct attribute *common_loc, | |
14224 | struct attribute *member_loc, | |
14225 | struct dwarf2_cu *cu) | |
14226 | { | |
14227 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
14228 | struct dwarf2_locexpr_baton *baton; | |
14229 | gdb_byte *ptr; | |
14230 | unsigned int cu_off; | |
14231 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
14232 | LONGEST offset = 0; | |
14233 | ||
14234 | gdb_assert (common_loc && member_loc); | |
14235 | gdb_assert (attr_form_is_block (common_loc)); | |
14236 | gdb_assert (attr_form_is_block (member_loc) | |
14237 | || attr_form_is_constant (member_loc)); | |
14238 | ||
8d749320 | 14239 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
14240 | baton->per_cu = cu->per_cu; |
14241 | gdb_assert (baton->per_cu); | |
14242 | ||
14243 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
14244 | ||
14245 | if (attr_form_is_constant (member_loc)) | |
14246 | { | |
14247 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
14248 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
14249 | } | |
14250 | else | |
14251 | baton->size += DW_BLOCK (member_loc)->size; | |
14252 | ||
224c3ddb | 14253 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
14254 | baton->data = ptr; |
14255 | ||
14256 | *ptr++ = DW_OP_call4; | |
9c541725 | 14257 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
14258 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
14259 | ptr += 4; | |
14260 | ||
14261 | if (attr_form_is_constant (member_loc)) | |
14262 | { | |
14263 | *ptr++ = DW_OP_addr; | |
14264 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
14265 | ptr += cu->header.addr_size; | |
14266 | } | |
14267 | else | |
14268 | { | |
14269 | /* We have to copy the data here, because DW_OP_call4 will only | |
14270 | use a DW_AT_location attribute. */ | |
14271 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
14272 | ptr += DW_BLOCK (member_loc)->size; | |
14273 | } | |
14274 | ||
14275 | *ptr++ = DW_OP_plus; | |
14276 | gdb_assert (ptr - baton->data == baton->size); | |
14277 | ||
0971de02 | 14278 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 14279 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
14280 | } |
14281 | ||
4357ac6c TT |
14282 | /* Create appropriate locally-scoped variables for all the |
14283 | DW_TAG_common_block entries. Also create a struct common_block | |
14284 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
14285 | is used to sepate the common blocks name namespace from regular | |
14286 | variable names. */ | |
c906108c SS |
14287 | |
14288 | static void | |
e7c27a73 | 14289 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14290 | { |
0971de02 TT |
14291 | struct attribute *attr; |
14292 | ||
14293 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
14294 | if (attr) | |
14295 | { | |
14296 | /* Support the .debug_loc offsets. */ | |
14297 | if (attr_form_is_block (attr)) | |
14298 | { | |
14299 | /* Ok. */ | |
14300 | } | |
14301 | else if (attr_form_is_section_offset (attr)) | |
14302 | { | |
14303 | dwarf2_complex_location_expr_complaint (); | |
14304 | attr = NULL; | |
14305 | } | |
14306 | else | |
14307 | { | |
14308 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
14309 | "common block member"); | |
14310 | attr = NULL; | |
14311 | } | |
14312 | } | |
14313 | ||
639d11d3 | 14314 | if (die->child != NULL) |
c906108c | 14315 | { |
4357ac6c TT |
14316 | struct objfile *objfile = cu->objfile; |
14317 | struct die_info *child_die; | |
14318 | size_t n_entries = 0, size; | |
14319 | struct common_block *common_block; | |
14320 | struct symbol *sym; | |
74ac6d43 | 14321 | |
4357ac6c TT |
14322 | for (child_die = die->child; |
14323 | child_die && child_die->tag; | |
14324 | child_die = sibling_die (child_die)) | |
14325 | ++n_entries; | |
14326 | ||
14327 | size = (sizeof (struct common_block) | |
14328 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
14329 | common_block |
14330 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
14331 | size); | |
4357ac6c TT |
14332 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
14333 | common_block->n_entries = 0; | |
14334 | ||
14335 | for (child_die = die->child; | |
14336 | child_die && child_die->tag; | |
14337 | child_die = sibling_die (child_die)) | |
14338 | { | |
14339 | /* Create the symbol in the DW_TAG_common_block block in the current | |
14340 | symbol scope. */ | |
e7c27a73 | 14341 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
14342 | if (sym != NULL) |
14343 | { | |
14344 | struct attribute *member_loc; | |
14345 | ||
14346 | common_block->contents[common_block->n_entries++] = sym; | |
14347 | ||
14348 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
14349 | cu); | |
14350 | if (member_loc) | |
14351 | { | |
14352 | /* GDB has handled this for a long time, but it is | |
14353 | not specified by DWARF. It seems to have been | |
14354 | emitted by gfortran at least as recently as: | |
14355 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
14356 | complaint (&symfile_complaints, | |
14357 | _("Variable in common block has " | |
14358 | "DW_AT_data_member_location " | |
14359 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 14360 | to_underlying (child_die->sect_off), |
4262abfb | 14361 | objfile_name (cu->objfile)); |
0971de02 TT |
14362 | |
14363 | if (attr_form_is_section_offset (member_loc)) | |
14364 | dwarf2_complex_location_expr_complaint (); | |
14365 | else if (attr_form_is_constant (member_loc) | |
14366 | || attr_form_is_block (member_loc)) | |
14367 | { | |
14368 | if (attr) | |
14369 | mark_common_block_symbol_computed (sym, die, attr, | |
14370 | member_loc, cu); | |
14371 | } | |
14372 | else | |
14373 | dwarf2_complex_location_expr_complaint (); | |
14374 | } | |
14375 | } | |
c906108c | 14376 | } |
4357ac6c TT |
14377 | |
14378 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
14379 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
14380 | } |
14381 | } | |
14382 | ||
0114d602 | 14383 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 14384 | |
0114d602 DJ |
14385 | static struct type * |
14386 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 14387 | { |
e7c27a73 | 14388 | struct objfile *objfile = cu->objfile; |
0114d602 | 14389 | const char *previous_prefix, *name; |
9219021c | 14390 | int is_anonymous; |
0114d602 DJ |
14391 | struct type *type; |
14392 | ||
14393 | /* For extensions, reuse the type of the original namespace. */ | |
14394 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
14395 | { | |
14396 | struct die_info *ext_die; | |
14397 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 14398 | |
0114d602 DJ |
14399 | ext_die = dwarf2_extension (die, &ext_cu); |
14400 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
14401 | |
14402 | /* EXT_CU may not be the same as CU. | |
02142a6c | 14403 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
14404 | return set_die_type (die, type, cu); |
14405 | } | |
9219021c | 14406 | |
e142c38c | 14407 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
14408 | |
14409 | /* Now build the name of the current namespace. */ | |
14410 | ||
0114d602 DJ |
14411 | previous_prefix = determine_prefix (die, cu); |
14412 | if (previous_prefix[0] != '\0') | |
14413 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 14414 | previous_prefix, name, 0, cu); |
0114d602 DJ |
14415 | |
14416 | /* Create the type. */ | |
19f392bc | 14417 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 DJ |
14418 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
14419 | ||
60531b24 | 14420 | return set_die_type (die, type, cu); |
0114d602 DJ |
14421 | } |
14422 | ||
22cee43f | 14423 | /* Read a namespace scope. */ |
0114d602 DJ |
14424 | |
14425 | static void | |
14426 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
14427 | { | |
14428 | struct objfile *objfile = cu->objfile; | |
0114d602 | 14429 | int is_anonymous; |
9219021c | 14430 | |
5c4e30ca DC |
14431 | /* Add a symbol associated to this if we haven't seen the namespace |
14432 | before. Also, add a using directive if it's an anonymous | |
14433 | namespace. */ | |
9219021c | 14434 | |
f2f0e013 | 14435 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
14436 | { |
14437 | struct type *type; | |
14438 | ||
0114d602 | 14439 | type = read_type_die (die, cu); |
e7c27a73 | 14440 | new_symbol (die, type, cu); |
5c4e30ca | 14441 | |
e8e80198 | 14442 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 14443 | if (is_anonymous) |
0114d602 DJ |
14444 | { |
14445 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 14446 | |
22cee43f PMR |
14447 | add_using_directive (using_directives (cu->language), |
14448 | previous_prefix, TYPE_NAME (type), NULL, | |
14449 | NULL, NULL, 0, &objfile->objfile_obstack); | |
0114d602 | 14450 | } |
5c4e30ca | 14451 | } |
9219021c | 14452 | |
639d11d3 | 14453 | if (die->child != NULL) |
d9fa45fe | 14454 | { |
639d11d3 | 14455 | struct die_info *child_die = die->child; |
6e70227d | 14456 | |
d9fa45fe DC |
14457 | while (child_die && child_die->tag) |
14458 | { | |
e7c27a73 | 14459 | process_die (child_die, cu); |
d9fa45fe DC |
14460 | child_die = sibling_die (child_die); |
14461 | } | |
14462 | } | |
38d518c9 EZ |
14463 | } |
14464 | ||
f55ee35c JK |
14465 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
14466 | imported module. Still we need that type as local Fortran "use ... only" | |
14467 | declaration imports depend on the created type in determine_prefix. */ | |
14468 | ||
14469 | static struct type * | |
14470 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
14471 | { | |
14472 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 14473 | const char *module_name; |
f55ee35c JK |
14474 | struct type *type; |
14475 | ||
14476 | module_name = dwarf2_name (die, cu); | |
14477 | if (!module_name) | |
3e43a32a MS |
14478 | complaint (&symfile_complaints, |
14479 | _("DW_TAG_module has no name, offset 0x%x"), | |
9c541725 | 14480 | to_underlying (die->sect_off)); |
19f392bc | 14481 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c JK |
14482 | |
14483 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
14484 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
14485 | ||
14486 | return set_die_type (die, type, cu); | |
14487 | } | |
14488 | ||
5d7cb8df JK |
14489 | /* Read a Fortran module. */ |
14490 | ||
14491 | static void | |
14492 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
14493 | { | |
14494 | struct die_info *child_die = die->child; | |
530e8392 KB |
14495 | struct type *type; |
14496 | ||
14497 | type = read_type_die (die, cu); | |
14498 | new_symbol (die, type, cu); | |
5d7cb8df | 14499 | |
5d7cb8df JK |
14500 | while (child_die && child_die->tag) |
14501 | { | |
14502 | process_die (child_die, cu); | |
14503 | child_die = sibling_die (child_die); | |
14504 | } | |
14505 | } | |
14506 | ||
38d518c9 EZ |
14507 | /* Return the name of the namespace represented by DIE. Set |
14508 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
14509 | namespace. */ | |
14510 | ||
14511 | static const char * | |
e142c38c | 14512 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
14513 | { |
14514 | struct die_info *current_die; | |
14515 | const char *name = NULL; | |
14516 | ||
14517 | /* Loop through the extensions until we find a name. */ | |
14518 | ||
14519 | for (current_die = die; | |
14520 | current_die != NULL; | |
f2f0e013 | 14521 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 14522 | { |
96553a0c DE |
14523 | /* We don't use dwarf2_name here so that we can detect the absence |
14524 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 14525 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 14526 | |
38d518c9 EZ |
14527 | if (name != NULL) |
14528 | break; | |
14529 | } | |
14530 | ||
14531 | /* Is it an anonymous namespace? */ | |
14532 | ||
14533 | *is_anonymous = (name == NULL); | |
14534 | if (*is_anonymous) | |
2b1dbab0 | 14535 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
14536 | |
14537 | return name; | |
d9fa45fe DC |
14538 | } |
14539 | ||
c906108c SS |
14540 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
14541 | the user defined type vector. */ | |
14542 | ||
f792889a | 14543 | static struct type * |
e7c27a73 | 14544 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14545 | { |
5e2b427d | 14546 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 14547 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 14548 | struct type *type; |
8b2dbe47 KB |
14549 | struct attribute *attr_byte_size; |
14550 | struct attribute *attr_address_class; | |
14551 | int byte_size, addr_class; | |
7e314c57 JK |
14552 | struct type *target_type; |
14553 | ||
14554 | target_type = die_type (die, cu); | |
c906108c | 14555 | |
7e314c57 JK |
14556 | /* The die_type call above may have already set the type for this DIE. */ |
14557 | type = get_die_type (die, cu); | |
14558 | if (type) | |
14559 | return type; | |
14560 | ||
14561 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 14562 | |
e142c38c | 14563 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
14564 | if (attr_byte_size) |
14565 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 14566 | else |
8b2dbe47 KB |
14567 | byte_size = cu_header->addr_size; |
14568 | ||
e142c38c | 14569 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
14570 | if (attr_address_class) |
14571 | addr_class = DW_UNSND (attr_address_class); | |
14572 | else | |
14573 | addr_class = DW_ADDR_none; | |
14574 | ||
14575 | /* If the pointer size or address class is different than the | |
14576 | default, create a type variant marked as such and set the | |
14577 | length accordingly. */ | |
14578 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 14579 | { |
5e2b427d | 14580 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
14581 | { |
14582 | int type_flags; | |
14583 | ||
849957d9 | 14584 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 14585 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
14586 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
14587 | == 0); | |
8b2dbe47 KB |
14588 | type = make_type_with_address_space (type, type_flags); |
14589 | } | |
14590 | else if (TYPE_LENGTH (type) != byte_size) | |
14591 | { | |
3e43a32a MS |
14592 | complaint (&symfile_complaints, |
14593 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 14594 | } |
6e70227d | 14595 | else |
9a619af0 MS |
14596 | { |
14597 | /* Should we also complain about unhandled address classes? */ | |
14598 | } | |
c906108c | 14599 | } |
8b2dbe47 KB |
14600 | |
14601 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 14602 | return set_die_type (die, type, cu); |
c906108c SS |
14603 | } |
14604 | ||
14605 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
14606 | the user defined type vector. */ | |
14607 | ||
f792889a | 14608 | static struct type * |
e7c27a73 | 14609 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
14610 | { |
14611 | struct type *type; | |
14612 | struct type *to_type; | |
14613 | struct type *domain; | |
14614 | ||
e7c27a73 DJ |
14615 | to_type = die_type (die, cu); |
14616 | domain = die_containing_type (die, cu); | |
0d5de010 | 14617 | |
7e314c57 JK |
14618 | /* The calls above may have already set the type for this DIE. */ |
14619 | type = get_die_type (die, cu); | |
14620 | if (type) | |
14621 | return type; | |
14622 | ||
0d5de010 DJ |
14623 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
14624 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
14625 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
14626 | { | |
14627 | struct type *new_type = alloc_type (cu->objfile); | |
14628 | ||
14629 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
14630 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
14631 | TYPE_VARARGS (to_type)); | |
14632 | type = lookup_methodptr_type (new_type); | |
14633 | } | |
0d5de010 DJ |
14634 | else |
14635 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 14636 | |
f792889a | 14637 | return set_die_type (die, type, cu); |
c906108c SS |
14638 | } |
14639 | ||
4297a3f0 | 14640 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
14641 | the user defined type vector. */ |
14642 | ||
f792889a | 14643 | static struct type * |
4297a3f0 AV |
14644 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
14645 | enum type_code refcode) | |
c906108c | 14646 | { |
e7c27a73 | 14647 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 14648 | struct type *type, *target_type; |
c906108c SS |
14649 | struct attribute *attr; |
14650 | ||
4297a3f0 AV |
14651 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
14652 | ||
7e314c57 JK |
14653 | target_type = die_type (die, cu); |
14654 | ||
14655 | /* The die_type call above may have already set the type for this DIE. */ | |
14656 | type = get_die_type (die, cu); | |
14657 | if (type) | |
14658 | return type; | |
14659 | ||
4297a3f0 | 14660 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 14661 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14662 | if (attr) |
14663 | { | |
14664 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
14665 | } | |
14666 | else | |
14667 | { | |
107d2387 | 14668 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 14669 | } |
f792889a | 14670 | return set_die_type (die, type, cu); |
c906108c SS |
14671 | } |
14672 | ||
cf363f18 MW |
14673 | /* Add the given cv-qualifiers to the element type of the array. GCC |
14674 | outputs DWARF type qualifiers that apply to an array, not the | |
14675 | element type. But GDB relies on the array element type to carry | |
14676 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
14677 | specification. */ | |
14678 | ||
14679 | static struct type * | |
14680 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
14681 | struct type *base_type, int cnst, int voltl) | |
14682 | { | |
14683 | struct type *el_type, *inner_array; | |
14684 | ||
14685 | base_type = copy_type (base_type); | |
14686 | inner_array = base_type; | |
14687 | ||
14688 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
14689 | { | |
14690 | TYPE_TARGET_TYPE (inner_array) = | |
14691 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
14692 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
14693 | } | |
14694 | ||
14695 | el_type = TYPE_TARGET_TYPE (inner_array); | |
14696 | cnst |= TYPE_CONST (el_type); | |
14697 | voltl |= TYPE_VOLATILE (el_type); | |
14698 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
14699 | ||
14700 | return set_die_type (die, base_type, cu); | |
14701 | } | |
14702 | ||
f792889a | 14703 | static struct type * |
e7c27a73 | 14704 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14705 | { |
f792889a | 14706 | struct type *base_type, *cv_type; |
c906108c | 14707 | |
e7c27a73 | 14708 | base_type = die_type (die, cu); |
7e314c57 JK |
14709 | |
14710 | /* The die_type call above may have already set the type for this DIE. */ | |
14711 | cv_type = get_die_type (die, cu); | |
14712 | if (cv_type) | |
14713 | return cv_type; | |
14714 | ||
2f608a3a KW |
14715 | /* In case the const qualifier is applied to an array type, the element type |
14716 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
14717 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 14718 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 14719 | |
f792889a DJ |
14720 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
14721 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14722 | } |
14723 | ||
f792889a | 14724 | static struct type * |
e7c27a73 | 14725 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14726 | { |
f792889a | 14727 | struct type *base_type, *cv_type; |
c906108c | 14728 | |
e7c27a73 | 14729 | base_type = die_type (die, cu); |
7e314c57 JK |
14730 | |
14731 | /* The die_type call above may have already set the type for this DIE. */ | |
14732 | cv_type = get_die_type (die, cu); | |
14733 | if (cv_type) | |
14734 | return cv_type; | |
14735 | ||
cf363f18 MW |
14736 | /* In case the volatile qualifier is applied to an array type, the |
14737 | element type is so qualified, not the array type (section 6.7.3 | |
14738 | of C99). */ | |
14739 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
14740 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
14741 | ||
f792889a DJ |
14742 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
14743 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
14744 | } |
14745 | ||
06d66ee9 TT |
14746 | /* Handle DW_TAG_restrict_type. */ |
14747 | ||
14748 | static struct type * | |
14749 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
14750 | { | |
14751 | struct type *base_type, *cv_type; | |
14752 | ||
14753 | base_type = die_type (die, cu); | |
14754 | ||
14755 | /* The die_type call above may have already set the type for this DIE. */ | |
14756 | cv_type = get_die_type (die, cu); | |
14757 | if (cv_type) | |
14758 | return cv_type; | |
14759 | ||
14760 | cv_type = make_restrict_type (base_type); | |
14761 | return set_die_type (die, cv_type, cu); | |
14762 | } | |
14763 | ||
a2c2acaf MW |
14764 | /* Handle DW_TAG_atomic_type. */ |
14765 | ||
14766 | static struct type * | |
14767 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
14768 | { | |
14769 | struct type *base_type, *cv_type; | |
14770 | ||
14771 | base_type = die_type (die, cu); | |
14772 | ||
14773 | /* The die_type call above may have already set the type for this DIE. */ | |
14774 | cv_type = get_die_type (die, cu); | |
14775 | if (cv_type) | |
14776 | return cv_type; | |
14777 | ||
14778 | cv_type = make_atomic_type (base_type); | |
14779 | return set_die_type (die, cv_type, cu); | |
14780 | } | |
14781 | ||
c906108c SS |
14782 | /* Extract all information from a DW_TAG_string_type DIE and add to |
14783 | the user defined type vector. It isn't really a user defined type, | |
14784 | but it behaves like one, with other DIE's using an AT_user_def_type | |
14785 | attribute to reference it. */ | |
14786 | ||
f792889a | 14787 | static struct type * |
e7c27a73 | 14788 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14789 | { |
e7c27a73 | 14790 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 14791 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14792 | struct type *type, *range_type, *index_type, *char_type; |
14793 | struct attribute *attr; | |
14794 | unsigned int length; | |
14795 | ||
e142c38c | 14796 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
14797 | if (attr) |
14798 | { | |
14799 | length = DW_UNSND (attr); | |
14800 | } | |
14801 | else | |
14802 | { | |
0963b4bd | 14803 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 14804 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
14805 | if (attr) |
14806 | { | |
14807 | length = DW_UNSND (attr); | |
14808 | } | |
14809 | else | |
14810 | { | |
14811 | length = 1; | |
14812 | } | |
c906108c | 14813 | } |
6ccb9162 | 14814 | |
46bf5051 | 14815 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 14816 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
14817 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
14818 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 14819 | |
f792889a | 14820 | return set_die_type (die, type, cu); |
c906108c SS |
14821 | } |
14822 | ||
4d804846 JB |
14823 | /* Assuming that DIE corresponds to a function, returns nonzero |
14824 | if the function is prototyped. */ | |
14825 | ||
14826 | static int | |
14827 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
14828 | { | |
14829 | struct attribute *attr; | |
14830 | ||
14831 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
14832 | if (attr && (DW_UNSND (attr) != 0)) | |
14833 | return 1; | |
14834 | ||
14835 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
14836 | is only meaninful for C, but the concept also extends to other | |
14837 | languages that allow unprototyped functions (Eg: Objective C). | |
14838 | For all other languages, assume that functions are always | |
14839 | prototyped. */ | |
14840 | if (cu->language != language_c | |
14841 | && cu->language != language_objc | |
14842 | && cu->language != language_opencl) | |
14843 | return 1; | |
14844 | ||
14845 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
14846 | prototyped and unprototyped functions; default to prototyped, | |
14847 | since that is more common in modern code (and RealView warns | |
14848 | about unprototyped functions). */ | |
14849 | if (producer_is_realview (cu->producer)) | |
14850 | return 1; | |
14851 | ||
14852 | return 0; | |
14853 | } | |
14854 | ||
c906108c SS |
14855 | /* Handle DIES due to C code like: |
14856 | ||
14857 | struct foo | |
c5aa993b JM |
14858 | { |
14859 | int (*funcp)(int a, long l); | |
14860 | int b; | |
14861 | }; | |
c906108c | 14862 | |
0963b4bd | 14863 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 14864 | |
f792889a | 14865 | static struct type * |
e7c27a73 | 14866 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14867 | { |
bb5ed363 | 14868 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
14869 | struct type *type; /* Type that this function returns. */ |
14870 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
14871 | struct attribute *attr; |
14872 | ||
e7c27a73 | 14873 | type = die_type (die, cu); |
7e314c57 JK |
14874 | |
14875 | /* The die_type call above may have already set the type for this DIE. */ | |
14876 | ftype = get_die_type (die, cu); | |
14877 | if (ftype) | |
14878 | return ftype; | |
14879 | ||
0c8b41f1 | 14880 | ftype = lookup_function_type (type); |
c906108c | 14881 | |
4d804846 | 14882 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 14883 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 14884 | |
c055b101 CV |
14885 | /* Store the calling convention in the type if it's available in |
14886 | the subroutine die. Otherwise set the calling convention to | |
14887 | the default value DW_CC_normal. */ | |
14888 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
14889 | if (attr) |
14890 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
14891 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
14892 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
14893 | else | |
14894 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 14895 | |
743649fd MW |
14896 | /* Record whether the function returns normally to its caller or not |
14897 | if the DWARF producer set that information. */ | |
14898 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
14899 | if (attr && (DW_UNSND (attr) != 0)) | |
14900 | TYPE_NO_RETURN (ftype) = 1; | |
14901 | ||
76c10ea2 GM |
14902 | /* We need to add the subroutine type to the die immediately so |
14903 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 14904 | declared as the same subroutine type. */ |
76c10ea2 | 14905 | set_die_type (die, ftype, cu); |
6e70227d | 14906 | |
639d11d3 | 14907 | if (die->child != NULL) |
c906108c | 14908 | { |
bb5ed363 | 14909 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 14910 | struct die_info *child_die; |
8072405b | 14911 | int nparams, iparams; |
c906108c SS |
14912 | |
14913 | /* Count the number of parameters. | |
14914 | FIXME: GDB currently ignores vararg functions, but knows about | |
14915 | vararg member functions. */ | |
8072405b | 14916 | nparams = 0; |
639d11d3 | 14917 | child_die = die->child; |
c906108c SS |
14918 | while (child_die && child_die->tag) |
14919 | { | |
14920 | if (child_die->tag == DW_TAG_formal_parameter) | |
14921 | nparams++; | |
14922 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 14923 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
14924 | child_die = sibling_die (child_die); |
14925 | } | |
14926 | ||
14927 | /* Allocate storage for parameters and fill them in. */ | |
14928 | TYPE_NFIELDS (ftype) = nparams; | |
14929 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 14930 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 14931 | |
8072405b JK |
14932 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
14933 | even if we error out during the parameters reading below. */ | |
14934 | for (iparams = 0; iparams < nparams; iparams++) | |
14935 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
14936 | ||
14937 | iparams = 0; | |
639d11d3 | 14938 | child_die = die->child; |
c906108c SS |
14939 | while (child_die && child_die->tag) |
14940 | { | |
14941 | if (child_die->tag == DW_TAG_formal_parameter) | |
14942 | { | |
3ce3b1ba PA |
14943 | struct type *arg_type; |
14944 | ||
14945 | /* DWARF version 2 has no clean way to discern C++ | |
14946 | static and non-static member functions. G++ helps | |
14947 | GDB by marking the first parameter for non-static | |
14948 | member functions (which is the this pointer) as | |
14949 | artificial. We pass this information to | |
14950 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
14951 | ||
14952 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
14953 | 4.5 does not yet generate. */ | |
e142c38c | 14954 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
14955 | if (attr) |
14956 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
14957 | else | |
9c37b5ae | 14958 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
14959 | arg_type = die_type (child_die, cu); |
14960 | ||
14961 | /* RealView does not mark THIS as const, which the testsuite | |
14962 | expects. GCC marks THIS as const in method definitions, | |
14963 | but not in the class specifications (GCC PR 43053). */ | |
14964 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
14965 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
14966 | { | |
14967 | int is_this = 0; | |
14968 | struct dwarf2_cu *arg_cu = cu; | |
14969 | const char *name = dwarf2_name (child_die, cu); | |
14970 | ||
14971 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
14972 | if (attr) | |
14973 | { | |
14974 | /* If the compiler emits this, use it. */ | |
14975 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
14976 | is_this = 1; | |
14977 | } | |
14978 | else if (name && strcmp (name, "this") == 0) | |
14979 | /* Function definitions will have the argument names. */ | |
14980 | is_this = 1; | |
14981 | else if (name == NULL && iparams == 0) | |
14982 | /* Declarations may not have the names, so like | |
14983 | elsewhere in GDB, assume an artificial first | |
14984 | argument is "this". */ | |
14985 | is_this = 1; | |
14986 | ||
14987 | if (is_this) | |
14988 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
14989 | arg_type, 0); | |
14990 | } | |
14991 | ||
14992 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
14993 | iparams++; |
14994 | } | |
14995 | child_die = sibling_die (child_die); | |
14996 | } | |
14997 | } | |
14998 | ||
76c10ea2 | 14999 | return ftype; |
c906108c SS |
15000 | } |
15001 | ||
f792889a | 15002 | static struct type * |
e7c27a73 | 15003 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15004 | { |
e7c27a73 | 15005 | struct objfile *objfile = cu->objfile; |
0114d602 | 15006 | const char *name = NULL; |
3c8e0968 | 15007 | struct type *this_type, *target_type; |
c906108c | 15008 | |
94af9270 | 15009 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
15010 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
15011 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 15012 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
15013 | target_type = die_type (die, cu); |
15014 | if (target_type != this_type) | |
15015 | TYPE_TARGET_TYPE (this_type) = target_type; | |
15016 | else | |
15017 | { | |
15018 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
15019 | spec and cause infinite loops in GDB. */ | |
15020 | complaint (&symfile_complaints, | |
15021 | _("Self-referential DW_TAG_typedef " | |
15022 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 15023 | to_underlying (die->sect_off), objfile_name (objfile)); |
3c8e0968 DE |
15024 | TYPE_TARGET_TYPE (this_type) = NULL; |
15025 | } | |
f792889a | 15026 | return this_type; |
c906108c SS |
15027 | } |
15028 | ||
9b790ce7 UW |
15029 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
15030 | (which may be different from NAME) to the architecture back-end to allow | |
15031 | it to guess the correct format if necessary. */ | |
15032 | ||
15033 | static struct type * | |
15034 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
15035 | const char *name_hint) | |
15036 | { | |
15037 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
15038 | const struct floatformat **format; | |
15039 | struct type *type; | |
15040 | ||
15041 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
15042 | if (format) | |
15043 | type = init_float_type (objfile, bits, name, format); | |
15044 | else | |
15045 | type = init_type (objfile, TYPE_CODE_ERROR, bits / TARGET_CHAR_BIT, name); | |
15046 | ||
15047 | return type; | |
15048 | } | |
15049 | ||
c906108c SS |
15050 | /* Find a representation of a given base type and install |
15051 | it in the TYPE field of the die. */ | |
15052 | ||
f792889a | 15053 | static struct type * |
e7c27a73 | 15054 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15055 | { |
e7c27a73 | 15056 | struct objfile *objfile = cu->objfile; |
c906108c SS |
15057 | struct type *type; |
15058 | struct attribute *attr; | |
19f392bc | 15059 | int encoding = 0, bits = 0; |
15d034d0 | 15060 | const char *name; |
c906108c | 15061 | |
e142c38c | 15062 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
15063 | if (attr) |
15064 | { | |
15065 | encoding = DW_UNSND (attr); | |
15066 | } | |
e142c38c | 15067 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15068 | if (attr) |
15069 | { | |
19f392bc | 15070 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 15071 | } |
39cbfefa | 15072 | name = dwarf2_name (die, cu); |
6ccb9162 | 15073 | if (!name) |
c906108c | 15074 | { |
6ccb9162 UW |
15075 | complaint (&symfile_complaints, |
15076 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 15077 | } |
6ccb9162 UW |
15078 | |
15079 | switch (encoding) | |
c906108c | 15080 | { |
6ccb9162 UW |
15081 | case DW_ATE_address: |
15082 | /* Turn DW_ATE_address into a void * pointer. */ | |
19f392bc UW |
15083 | type = init_type (objfile, TYPE_CODE_VOID, 1, NULL); |
15084 | type = init_pointer_type (objfile, bits, name, type); | |
6ccb9162 UW |
15085 | break; |
15086 | case DW_ATE_boolean: | |
19f392bc | 15087 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
15088 | break; |
15089 | case DW_ATE_complex_float: | |
9b790ce7 | 15090 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 15091 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
15092 | break; |
15093 | case DW_ATE_decimal_float: | |
19f392bc | 15094 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
15095 | break; |
15096 | case DW_ATE_float: | |
9b790ce7 | 15097 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
15098 | break; |
15099 | case DW_ATE_signed: | |
19f392bc | 15100 | type = init_integer_type (objfile, bits, 0, name); |
6ccb9162 UW |
15101 | break; |
15102 | case DW_ATE_unsigned: | |
3b2b8fea TT |
15103 | if (cu->language == language_fortran |
15104 | && name | |
61012eef | 15105 | && startswith (name, "character(")) |
19f392bc UW |
15106 | type = init_character_type (objfile, bits, 1, name); |
15107 | else | |
15108 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 UW |
15109 | break; |
15110 | case DW_ATE_signed_char: | |
6e70227d | 15111 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
15112 | || cu->language == language_pascal |
15113 | || cu->language == language_fortran) | |
19f392bc UW |
15114 | type = init_character_type (objfile, bits, 0, name); |
15115 | else | |
15116 | type = init_integer_type (objfile, bits, 0, name); | |
6ccb9162 UW |
15117 | break; |
15118 | case DW_ATE_unsigned_char: | |
868a0084 | 15119 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 15120 | || cu->language == language_pascal |
c44af4eb TT |
15121 | || cu->language == language_fortran |
15122 | || cu->language == language_rust) | |
19f392bc UW |
15123 | type = init_character_type (objfile, bits, 1, name); |
15124 | else | |
15125 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 | 15126 | break; |
75079b2b | 15127 | case DW_ATE_UTF: |
53e710ac PA |
15128 | { |
15129 | gdbarch *arch = get_objfile_arch (objfile); | |
15130 | ||
15131 | if (bits == 16) | |
15132 | type = builtin_type (arch)->builtin_char16; | |
15133 | else if (bits == 32) | |
15134 | type = builtin_type (arch)->builtin_char32; | |
15135 | else | |
15136 | { | |
15137 | complaint (&symfile_complaints, | |
15138 | _("unsupported DW_ATE_UTF bit size: '%d'"), | |
15139 | bits); | |
15140 | type = init_integer_type (objfile, bits, 1, name); | |
15141 | } | |
15142 | return set_die_type (die, type, cu); | |
15143 | } | |
75079b2b TT |
15144 | break; |
15145 | ||
6ccb9162 UW |
15146 | default: |
15147 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
15148 | dwarf_type_encoding_name (encoding)); | |
19f392bc UW |
15149 | type = init_type (objfile, TYPE_CODE_ERROR, |
15150 | bits / TARGET_CHAR_BIT, name); | |
6ccb9162 | 15151 | break; |
c906108c | 15152 | } |
6ccb9162 | 15153 | |
0114d602 | 15154 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 15155 | TYPE_NOSIGN (type) = 1; |
0114d602 | 15156 | |
f792889a | 15157 | return set_die_type (die, type, cu); |
c906108c SS |
15158 | } |
15159 | ||
80180f79 SA |
15160 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
15161 | resulting value of the attribute into struct bound_prop. | |
15162 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
15163 | ||
15164 | static int | |
15165 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
15166 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
15167 | { | |
15168 | struct dwarf2_property_baton *baton; | |
15169 | struct obstack *obstack = &cu->objfile->objfile_obstack; | |
15170 | ||
15171 | if (attr == NULL || prop == NULL) | |
15172 | return 0; | |
15173 | ||
15174 | if (attr_form_is_block (attr)) | |
15175 | { | |
8d749320 | 15176 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
15177 | baton->referenced_type = NULL; |
15178 | baton->locexpr.per_cu = cu->per_cu; | |
15179 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
15180 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
15181 | prop->data.baton = baton; | |
15182 | prop->kind = PROP_LOCEXPR; | |
15183 | gdb_assert (prop->data.baton != NULL); | |
15184 | } | |
15185 | else if (attr_form_is_ref (attr)) | |
15186 | { | |
15187 | struct dwarf2_cu *target_cu = cu; | |
15188 | struct die_info *target_die; | |
15189 | struct attribute *target_attr; | |
15190 | ||
15191 | target_die = follow_die_ref (die, attr, &target_cu); | |
15192 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
15193 | if (target_attr == NULL) |
15194 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
15195 | target_cu); | |
80180f79 SA |
15196 | if (target_attr == NULL) |
15197 | return 0; | |
15198 | ||
df25ebbd | 15199 | switch (target_attr->name) |
80180f79 | 15200 | { |
df25ebbd JB |
15201 | case DW_AT_location: |
15202 | if (attr_form_is_section_offset (target_attr)) | |
15203 | { | |
8d749320 | 15204 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
15205 | baton->referenced_type = die_type (target_die, target_cu); |
15206 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
15207 | prop->data.baton = baton; | |
15208 | prop->kind = PROP_LOCLIST; | |
15209 | gdb_assert (prop->data.baton != NULL); | |
15210 | } | |
15211 | else if (attr_form_is_block (target_attr)) | |
15212 | { | |
8d749320 | 15213 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
15214 | baton->referenced_type = die_type (target_die, target_cu); |
15215 | baton->locexpr.per_cu = cu->per_cu; | |
15216 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
15217 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
15218 | prop->data.baton = baton; | |
15219 | prop->kind = PROP_LOCEXPR; | |
15220 | gdb_assert (prop->data.baton != NULL); | |
15221 | } | |
15222 | else | |
15223 | { | |
15224 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
15225 | "dynamic property"); | |
15226 | return 0; | |
15227 | } | |
15228 | break; | |
15229 | case DW_AT_data_member_location: | |
15230 | { | |
15231 | LONGEST offset; | |
15232 | ||
15233 | if (!handle_data_member_location (target_die, target_cu, | |
15234 | &offset)) | |
15235 | return 0; | |
15236 | ||
8d749320 | 15237 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
15238 | baton->referenced_type = read_type_die (target_die->parent, |
15239 | target_cu); | |
df25ebbd JB |
15240 | baton->offset_info.offset = offset; |
15241 | baton->offset_info.type = die_type (target_die, target_cu); | |
15242 | prop->data.baton = baton; | |
15243 | prop->kind = PROP_ADDR_OFFSET; | |
15244 | break; | |
15245 | } | |
80180f79 SA |
15246 | } |
15247 | } | |
15248 | else if (attr_form_is_constant (attr)) | |
15249 | { | |
15250 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
15251 | prop->kind = PROP_CONST; | |
15252 | } | |
15253 | else | |
15254 | { | |
15255 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
15256 | dwarf2_name (die, cu)); | |
15257 | return 0; | |
15258 | } | |
15259 | ||
15260 | return 1; | |
15261 | } | |
15262 | ||
a02abb62 JB |
15263 | /* Read the given DW_AT_subrange DIE. */ |
15264 | ||
f792889a | 15265 | static struct type * |
a02abb62 JB |
15266 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
15267 | { | |
4c9ad8c2 | 15268 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
15269 | struct type *range_type; |
15270 | struct attribute *attr; | |
729efb13 | 15271 | struct dynamic_prop low, high; |
4fae6e18 | 15272 | int low_default_is_valid; |
c451ebe5 | 15273 | int high_bound_is_count = 0; |
15d034d0 | 15274 | const char *name; |
43bbcdc2 | 15275 | LONGEST negative_mask; |
e77813c8 | 15276 | |
4c9ad8c2 TT |
15277 | orig_base_type = die_type (die, cu); |
15278 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
15279 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
15280 | creating the range type, but we use the result of check_typedef | |
15281 | when examining properties of the type. */ | |
15282 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 15283 | |
7e314c57 JK |
15284 | /* The die_type call above may have already set the type for this DIE. */ |
15285 | range_type = get_die_type (die, cu); | |
15286 | if (range_type) | |
15287 | return range_type; | |
15288 | ||
729efb13 SA |
15289 | low.kind = PROP_CONST; |
15290 | high.kind = PROP_CONST; | |
15291 | high.data.const_val = 0; | |
15292 | ||
4fae6e18 JK |
15293 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
15294 | omitting DW_AT_lower_bound. */ | |
15295 | switch (cu->language) | |
6e70227d | 15296 | { |
4fae6e18 JK |
15297 | case language_c: |
15298 | case language_cplus: | |
729efb13 | 15299 | low.data.const_val = 0; |
4fae6e18 JK |
15300 | low_default_is_valid = 1; |
15301 | break; | |
15302 | case language_fortran: | |
729efb13 | 15303 | low.data.const_val = 1; |
4fae6e18 JK |
15304 | low_default_is_valid = 1; |
15305 | break; | |
15306 | case language_d: | |
4fae6e18 | 15307 | case language_objc: |
c44af4eb | 15308 | case language_rust: |
729efb13 | 15309 | low.data.const_val = 0; |
4fae6e18 JK |
15310 | low_default_is_valid = (cu->header.version >= 4); |
15311 | break; | |
15312 | case language_ada: | |
15313 | case language_m2: | |
15314 | case language_pascal: | |
729efb13 | 15315 | low.data.const_val = 1; |
4fae6e18 JK |
15316 | low_default_is_valid = (cu->header.version >= 4); |
15317 | break; | |
15318 | default: | |
729efb13 | 15319 | low.data.const_val = 0; |
4fae6e18 JK |
15320 | low_default_is_valid = 0; |
15321 | break; | |
a02abb62 JB |
15322 | } |
15323 | ||
e142c38c | 15324 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 15325 | if (attr) |
11c1ba78 | 15326 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
15327 | else if (!low_default_is_valid) |
15328 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
15329 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 15330 | to_underlying (die->sect_off), objfile_name (cu->objfile)); |
a02abb62 | 15331 | |
e142c38c | 15332 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 15333 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
15334 | { |
15335 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 15336 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 15337 | { |
c451ebe5 SA |
15338 | /* If bounds are constant do the final calculation here. */ |
15339 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
15340 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
15341 | else | |
15342 | high_bound_is_count = 1; | |
c2ff108b | 15343 | } |
e77813c8 PM |
15344 | } |
15345 | ||
15346 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
15347 | without specifying a base type. | |
15348 | In that case, the base type must be set to the type of | |
15349 | the lower bound, upper bound or count, in that order, if any of these | |
15350 | three attributes references an object that has a type. | |
15351 | If no base type is found, the Dwarf-2 specifications say that | |
15352 | a signed integer type of size equal to the size of an address should | |
15353 | be used. | |
15354 | For the following C code: `extern char gdb_int [];' | |
15355 | GCC produces an empty range DIE. | |
15356 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 15357 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
15358 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
15359 | { | |
15360 | struct objfile *objfile = cu->objfile; | |
15361 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
15362 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
15363 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
15364 | ||
15365 | /* Test "int", "long int", and "long long int" objfile types, | |
15366 | and select the first one having a size above or equal to the | |
15367 | architecture address size. */ | |
15368 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15369 | base_type = int_type; | |
15370 | else | |
15371 | { | |
15372 | int_type = objfile_type (objfile)->builtin_long; | |
15373 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15374 | base_type = int_type; | |
15375 | else | |
15376 | { | |
15377 | int_type = objfile_type (objfile)->builtin_long_long; | |
15378 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
15379 | base_type = int_type; | |
15380 | } | |
15381 | } | |
15382 | } | |
a02abb62 | 15383 | |
dbb9c2b1 JB |
15384 | /* Normally, the DWARF producers are expected to use a signed |
15385 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
15386 | But this is unfortunately not always the case, as witnessed | |
15387 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
15388 | is used instead. To work around that ambiguity, we treat | |
15389 | the bounds as signed, and thus sign-extend their values, when | |
15390 | the base type is signed. */ | |
6e70227d | 15391 | negative_mask = |
66c6502d | 15392 | -((LONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
15393 | if (low.kind == PROP_CONST |
15394 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
15395 | low.data.const_val |= negative_mask; | |
15396 | if (high.kind == PROP_CONST | |
15397 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
15398 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 15399 | |
729efb13 | 15400 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 15401 | |
c451ebe5 SA |
15402 | if (high_bound_is_count) |
15403 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
15404 | ||
c2ff108b JK |
15405 | /* Ada expects an empty array on no boundary attributes. */ |
15406 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 15407 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 15408 | |
39cbfefa DJ |
15409 | name = dwarf2_name (die, cu); |
15410 | if (name) | |
15411 | TYPE_NAME (range_type) = name; | |
6e70227d | 15412 | |
e142c38c | 15413 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
15414 | if (attr) |
15415 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
15416 | ||
7e314c57 JK |
15417 | set_die_type (die, range_type, cu); |
15418 | ||
15419 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
15420 | set_descriptive_type (range_type, die, cu); |
15421 | ||
7e314c57 | 15422 | return range_type; |
a02abb62 | 15423 | } |
6e70227d | 15424 | |
f792889a | 15425 | static struct type * |
81a17f79 JB |
15426 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
15427 | { | |
15428 | struct type *type; | |
81a17f79 | 15429 | |
81a17f79 JB |
15430 | /* For now, we only support the C meaning of an unspecified type: void. */ |
15431 | ||
19f392bc | 15432 | type = init_type (cu->objfile, TYPE_CODE_VOID, 0, NULL); |
0114d602 | 15433 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 15434 | |
f792889a | 15435 | return set_die_type (die, type, cu); |
81a17f79 | 15436 | } |
a02abb62 | 15437 | |
639d11d3 DC |
15438 | /* Read a single die and all its descendents. Set the die's sibling |
15439 | field to NULL; set other fields in the die correctly, and set all | |
15440 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
15441 | location of the info_ptr after reading all of those dies. PARENT | |
15442 | is the parent of the die in question. */ | |
15443 | ||
15444 | static struct die_info * | |
dee91e82 | 15445 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
15446 | const gdb_byte *info_ptr, |
15447 | const gdb_byte **new_info_ptr, | |
dee91e82 | 15448 | struct die_info *parent) |
639d11d3 DC |
15449 | { |
15450 | struct die_info *die; | |
d521ce57 | 15451 | const gdb_byte *cur_ptr; |
639d11d3 DC |
15452 | int has_children; |
15453 | ||
bf6af496 | 15454 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
15455 | if (die == NULL) |
15456 | { | |
15457 | *new_info_ptr = cur_ptr; | |
15458 | return NULL; | |
15459 | } | |
93311388 | 15460 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
15461 | |
15462 | if (has_children) | |
bf6af496 | 15463 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
15464 | else |
15465 | { | |
15466 | die->child = NULL; | |
15467 | *new_info_ptr = cur_ptr; | |
15468 | } | |
15469 | ||
15470 | die->sibling = NULL; | |
15471 | die->parent = parent; | |
15472 | return die; | |
15473 | } | |
15474 | ||
15475 | /* Read a die, all of its descendents, and all of its siblings; set | |
15476 | all of the fields of all of the dies correctly. Arguments are as | |
15477 | in read_die_and_children. */ | |
15478 | ||
15479 | static struct die_info * | |
bf6af496 | 15480 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
15481 | const gdb_byte *info_ptr, |
15482 | const gdb_byte **new_info_ptr, | |
bf6af496 | 15483 | struct die_info *parent) |
639d11d3 DC |
15484 | { |
15485 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 15486 | const gdb_byte *cur_ptr; |
639d11d3 | 15487 | |
c906108c | 15488 | cur_ptr = info_ptr; |
639d11d3 DC |
15489 | first_die = last_sibling = NULL; |
15490 | ||
15491 | while (1) | |
c906108c | 15492 | { |
639d11d3 | 15493 | struct die_info *die |
dee91e82 | 15494 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 15495 | |
1d325ec1 | 15496 | if (die == NULL) |
c906108c | 15497 | { |
639d11d3 DC |
15498 | *new_info_ptr = cur_ptr; |
15499 | return first_die; | |
c906108c | 15500 | } |
1d325ec1 DJ |
15501 | |
15502 | if (!first_die) | |
15503 | first_die = die; | |
c906108c | 15504 | else |
1d325ec1 DJ |
15505 | last_sibling->sibling = die; |
15506 | ||
15507 | last_sibling = die; | |
c906108c | 15508 | } |
c906108c SS |
15509 | } |
15510 | ||
bf6af496 DE |
15511 | /* Read a die, all of its descendents, and all of its siblings; set |
15512 | all of the fields of all of the dies correctly. Arguments are as | |
15513 | in read_die_and_children. | |
15514 | This the main entry point for reading a DIE and all its children. */ | |
15515 | ||
15516 | static struct die_info * | |
15517 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
15518 | const gdb_byte *info_ptr, |
15519 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
15520 | struct die_info *parent) |
15521 | { | |
15522 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
15523 | new_info_ptr, parent); | |
15524 | ||
b4f54984 | 15525 | if (dwarf_die_debug) |
bf6af496 DE |
15526 | { |
15527 | fprintf_unfiltered (gdb_stdlog, | |
15528 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15529 | get_section_name (reader->die_section), |
bf6af496 DE |
15530 | (unsigned) (info_ptr - reader->die_section->buffer), |
15531 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 15532 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
15533 | } |
15534 | ||
15535 | return die; | |
15536 | } | |
15537 | ||
3019eac3 DE |
15538 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
15539 | attributes. | |
15540 | The caller is responsible for filling in the extra attributes | |
15541 | and updating (*DIEP)->num_attrs. | |
15542 | Set DIEP to point to a newly allocated die with its information, | |
15543 | except for its child, sibling, and parent fields. | |
15544 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 15545 | |
d521ce57 | 15546 | static const gdb_byte * |
3019eac3 | 15547 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 15548 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 15549 | int *has_children, int num_extra_attrs) |
93311388 | 15550 | { |
b64f50a1 | 15551 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
15552 | struct abbrev_info *abbrev; |
15553 | struct die_info *die; | |
15554 | struct dwarf2_cu *cu = reader->cu; | |
15555 | bfd *abfd = reader->abfd; | |
15556 | ||
9c541725 | 15557 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
15558 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15559 | info_ptr += bytes_read; | |
15560 | if (!abbrev_number) | |
15561 | { | |
15562 | *diep = NULL; | |
15563 | *has_children = 0; | |
15564 | return info_ptr; | |
15565 | } | |
15566 | ||
433df2d4 | 15567 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 15568 | if (!abbrev) |
348e048f DE |
15569 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
15570 | abbrev_number, | |
15571 | bfd_get_filename (abfd)); | |
15572 | ||
3019eac3 | 15573 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 15574 | die->sect_off = sect_off; |
93311388 DE |
15575 | die->tag = abbrev->tag; |
15576 | die->abbrev = abbrev_number; | |
15577 | ||
3019eac3 DE |
15578 | /* Make the result usable. |
15579 | The caller needs to update num_attrs after adding the extra | |
15580 | attributes. */ | |
93311388 DE |
15581 | die->num_attrs = abbrev->num_attrs; |
15582 | ||
15583 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
15584 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
15585 | info_ptr); | |
93311388 DE |
15586 | |
15587 | *diep = die; | |
15588 | *has_children = abbrev->has_children; | |
15589 | return info_ptr; | |
15590 | } | |
15591 | ||
3019eac3 DE |
15592 | /* Read a die and all its attributes. |
15593 | Set DIEP to point to a newly allocated die with its information, | |
15594 | except for its child, sibling, and parent fields. | |
15595 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
15596 | ||
d521ce57 | 15597 | static const gdb_byte * |
3019eac3 | 15598 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 15599 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
15600 | int *has_children) |
15601 | { | |
d521ce57 | 15602 | const gdb_byte *result; |
bf6af496 DE |
15603 | |
15604 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
15605 | ||
b4f54984 | 15606 | if (dwarf_die_debug) |
bf6af496 DE |
15607 | { |
15608 | fprintf_unfiltered (gdb_stdlog, | |
15609 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 15610 | get_section_name (reader->die_section), |
bf6af496 DE |
15611 | (unsigned) (info_ptr - reader->die_section->buffer), |
15612 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 15613 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
15614 | } |
15615 | ||
15616 | return result; | |
3019eac3 | 15617 | } |
433df2d4 DE |
15618 | \f |
15619 | /* Abbreviation tables. | |
3019eac3 | 15620 | |
433df2d4 | 15621 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
15622 | stored in a separate .debug_abbrev section. Before we read any |
15623 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
15624 | in a hash table. */ |
15625 | ||
15626 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
15627 | ||
15628 | static struct abbrev_info * | |
15629 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
15630 | { | |
15631 | struct abbrev_info *abbrev; | |
15632 | ||
8d749320 | 15633 | abbrev = XOBNEW (&abbrev_table->abbrev_obstack, struct abbrev_info); |
433df2d4 | 15634 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 15635 | |
433df2d4 DE |
15636 | return abbrev; |
15637 | } | |
15638 | ||
15639 | /* Add an abbreviation to the table. */ | |
c906108c SS |
15640 | |
15641 | static void | |
433df2d4 DE |
15642 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
15643 | unsigned int abbrev_number, | |
15644 | struct abbrev_info *abbrev) | |
15645 | { | |
15646 | unsigned int hash_number; | |
15647 | ||
15648 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15649 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
15650 | abbrev_table->abbrevs[hash_number] = abbrev; | |
15651 | } | |
dee91e82 | 15652 | |
433df2d4 DE |
15653 | /* Look up an abbrev in the table. |
15654 | Returns NULL if the abbrev is not found. */ | |
15655 | ||
15656 | static struct abbrev_info * | |
15657 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
15658 | unsigned int abbrev_number) | |
c906108c | 15659 | { |
433df2d4 DE |
15660 | unsigned int hash_number; |
15661 | struct abbrev_info *abbrev; | |
15662 | ||
15663 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
15664 | abbrev = abbrev_table->abbrevs[hash_number]; | |
15665 | ||
15666 | while (abbrev) | |
15667 | { | |
15668 | if (abbrev->number == abbrev_number) | |
15669 | return abbrev; | |
15670 | abbrev = abbrev->next; | |
15671 | } | |
15672 | return NULL; | |
15673 | } | |
15674 | ||
15675 | /* Read in an abbrev table. */ | |
15676 | ||
15677 | static struct abbrev_table * | |
15678 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
9c541725 | 15679 | sect_offset sect_off) |
433df2d4 DE |
15680 | { |
15681 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 15682 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 15683 | struct abbrev_table *abbrev_table; |
d521ce57 | 15684 | const gdb_byte *abbrev_ptr; |
c906108c SS |
15685 | struct abbrev_info *cur_abbrev; |
15686 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 15687 | unsigned int abbrev_form; |
f3dd6933 DJ |
15688 | struct attr_abbrev *cur_attrs; |
15689 | unsigned int allocated_attrs; | |
c906108c | 15690 | |
70ba0933 | 15691 | abbrev_table = XNEW (struct abbrev_table); |
9c541725 | 15692 | abbrev_table->sect_off = sect_off; |
433df2d4 | 15693 | obstack_init (&abbrev_table->abbrev_obstack); |
8d749320 SM |
15694 | abbrev_table->abbrevs = |
15695 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct abbrev_info *, | |
15696 | ABBREV_HASH_SIZE); | |
433df2d4 DE |
15697 | memset (abbrev_table->abbrevs, 0, |
15698 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 15699 | |
433df2d4 | 15700 | dwarf2_read_section (objfile, section); |
9c541725 | 15701 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
15702 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15703 | abbrev_ptr += bytes_read; | |
15704 | ||
f3dd6933 | 15705 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 15706 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 15707 | |
0963b4bd | 15708 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
15709 | while (abbrev_number) |
15710 | { | |
433df2d4 | 15711 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
15712 | |
15713 | /* read in abbrev header */ | |
15714 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
15715 | cur_abbrev->tag |
15716 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
15717 | abbrev_ptr += bytes_read; |
15718 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
15719 | abbrev_ptr += 1; | |
15720 | ||
15721 | /* now read in declarations */ | |
22d2f3ab | 15722 | for (;;) |
c906108c | 15723 | { |
43988095 JK |
15724 | LONGEST implicit_const; |
15725 | ||
22d2f3ab JK |
15726 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
15727 | abbrev_ptr += bytes_read; | |
15728 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15729 | abbrev_ptr += bytes_read; | |
43988095 JK |
15730 | if (abbrev_form == DW_FORM_implicit_const) |
15731 | { | |
15732 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
15733 | &bytes_read); | |
15734 | abbrev_ptr += bytes_read; | |
15735 | } | |
15736 | else | |
15737 | { | |
15738 | /* Initialize it due to a false compiler warning. */ | |
15739 | implicit_const = -1; | |
15740 | } | |
22d2f3ab JK |
15741 | |
15742 | if (abbrev_name == 0) | |
15743 | break; | |
15744 | ||
f3dd6933 | 15745 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 15746 | { |
f3dd6933 DJ |
15747 | allocated_attrs += ATTR_ALLOC_CHUNK; |
15748 | cur_attrs | |
224c3ddb | 15749 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 15750 | } |
ae038cb0 | 15751 | |
aead7601 SM |
15752 | cur_attrs[cur_abbrev->num_attrs].name |
15753 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 15754 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 15755 | = (enum dwarf_form) abbrev_form; |
43988095 | 15756 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 15757 | ++cur_abbrev->num_attrs; |
c906108c SS |
15758 | } |
15759 | ||
8d749320 SM |
15760 | cur_abbrev->attrs = |
15761 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
15762 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
15763 | memcpy (cur_abbrev->attrs, cur_attrs, |
15764 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
15765 | ||
433df2d4 | 15766 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
15767 | |
15768 | /* Get next abbreviation. | |
15769 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
15770 | always properly terminated with an abbrev number of 0. |
15771 | Exit loop if we encounter an abbreviation which we have | |
15772 | already read (which means we are about to read the abbreviations | |
15773 | for the next compile unit) or if the end of the abbreviation | |
15774 | table is reached. */ | |
433df2d4 | 15775 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
15776 | break; |
15777 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
15778 | abbrev_ptr += bytes_read; | |
433df2d4 | 15779 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
15780 | break; |
15781 | } | |
f3dd6933 DJ |
15782 | |
15783 | xfree (cur_attrs); | |
433df2d4 | 15784 | return abbrev_table; |
c906108c SS |
15785 | } |
15786 | ||
433df2d4 | 15787 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 15788 | |
c906108c | 15789 | static void |
433df2d4 | 15790 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 15791 | { |
433df2d4 DE |
15792 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
15793 | xfree (abbrev_table); | |
c906108c SS |
15794 | } |
15795 | ||
f4dc4d17 DE |
15796 | /* Same as abbrev_table_free but as a cleanup. |
15797 | We pass in a pointer to the pointer to the table so that we can | |
15798 | set the pointer to NULL when we're done. It also simplifies | |
73051182 | 15799 | build_type_psymtabs_1. */ |
f4dc4d17 DE |
15800 | |
15801 | static void | |
15802 | abbrev_table_free_cleanup (void *table_ptr) | |
15803 | { | |
9a3c8263 | 15804 | struct abbrev_table **abbrev_table_ptr = (struct abbrev_table **) table_ptr; |
f4dc4d17 DE |
15805 | |
15806 | if (*abbrev_table_ptr != NULL) | |
15807 | abbrev_table_free (*abbrev_table_ptr); | |
15808 | *abbrev_table_ptr = NULL; | |
15809 | } | |
15810 | ||
433df2d4 DE |
15811 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
15812 | ||
15813 | static void | |
15814 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
15815 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 15816 | { |
433df2d4 | 15817 | cu->abbrev_table = |
9c541725 | 15818 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_sect_off); |
433df2d4 | 15819 | } |
c906108c | 15820 | |
433df2d4 | 15821 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 15822 | |
433df2d4 DE |
15823 | static void |
15824 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
15825 | { | |
9a3c8263 | 15826 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr_to_cu; |
c906108c | 15827 | |
a2ce51a0 DE |
15828 | if (cu->abbrev_table != NULL) |
15829 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
15830 | /* Set this to NULL so that we SEGV if we try to read it later, |
15831 | and also because free_comp_unit verifies this is NULL. */ | |
15832 | cu->abbrev_table = NULL; | |
15833 | } | |
15834 | \f | |
72bf9492 DJ |
15835 | /* Returns nonzero if TAG represents a type that we might generate a partial |
15836 | symbol for. */ | |
15837 | ||
15838 | static int | |
15839 | is_type_tag_for_partial (int tag) | |
15840 | { | |
15841 | switch (tag) | |
15842 | { | |
15843 | #if 0 | |
15844 | /* Some types that would be reasonable to generate partial symbols for, | |
15845 | that we don't at present. */ | |
15846 | case DW_TAG_array_type: | |
15847 | case DW_TAG_file_type: | |
15848 | case DW_TAG_ptr_to_member_type: | |
15849 | case DW_TAG_set_type: | |
15850 | case DW_TAG_string_type: | |
15851 | case DW_TAG_subroutine_type: | |
15852 | #endif | |
15853 | case DW_TAG_base_type: | |
15854 | case DW_TAG_class_type: | |
680b30c7 | 15855 | case DW_TAG_interface_type: |
72bf9492 DJ |
15856 | case DW_TAG_enumeration_type: |
15857 | case DW_TAG_structure_type: | |
15858 | case DW_TAG_subrange_type: | |
15859 | case DW_TAG_typedef: | |
15860 | case DW_TAG_union_type: | |
15861 | return 1; | |
15862 | default: | |
15863 | return 0; | |
15864 | } | |
15865 | } | |
15866 | ||
15867 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
15868 | ||
15869 | static struct partial_die_info * | |
dee91e82 | 15870 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 15871 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 15872 | { |
dee91e82 | 15873 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15874 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
15875 | struct partial_die_info *part_die; |
15876 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
15877 | struct abbrev_info *abbrev; | |
15878 | unsigned int bytes_read; | |
5afb4e99 | 15879 | unsigned int load_all = 0; |
72bf9492 DJ |
15880 | int nesting_level = 1; |
15881 | ||
15882 | parent_die = NULL; | |
15883 | last_die = NULL; | |
15884 | ||
7adf1e79 DE |
15885 | gdb_assert (cu->per_cu != NULL); |
15886 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
15887 | load_all = 1; |
15888 | ||
72bf9492 DJ |
15889 | cu->partial_dies |
15890 | = htab_create_alloc_ex (cu->header.length / 12, | |
15891 | partial_die_hash, | |
15892 | partial_die_eq, | |
15893 | NULL, | |
15894 | &cu->comp_unit_obstack, | |
15895 | hashtab_obstack_allocate, | |
15896 | dummy_obstack_deallocate); | |
15897 | ||
8d749320 | 15898 | part_die = XOBNEW (&cu->comp_unit_obstack, struct partial_die_info); |
72bf9492 DJ |
15899 | |
15900 | while (1) | |
15901 | { | |
15902 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
15903 | ||
15904 | /* A NULL abbrev means the end of a series of children. */ | |
15905 | if (abbrev == NULL) | |
15906 | { | |
15907 | if (--nesting_level == 0) | |
15908 | { | |
15909 | /* PART_DIE was probably the last thing allocated on the | |
15910 | comp_unit_obstack, so we could call obstack_free | |
15911 | here. We don't do that because the waste is small, | |
15912 | and will be cleaned up when we're done with this | |
15913 | compilation unit. This way, we're also more robust | |
15914 | against other users of the comp_unit_obstack. */ | |
15915 | return first_die; | |
15916 | } | |
15917 | info_ptr += bytes_read; | |
15918 | last_die = parent_die; | |
15919 | parent_die = parent_die->die_parent; | |
15920 | continue; | |
15921 | } | |
15922 | ||
98bfdba5 PA |
15923 | /* Check for template arguments. We never save these; if |
15924 | they're seen, we just mark the parent, and go on our way. */ | |
15925 | if (parent_die != NULL | |
15926 | && cu->language == language_cplus | |
15927 | && (abbrev->tag == DW_TAG_template_type_param | |
15928 | || abbrev->tag == DW_TAG_template_value_param)) | |
15929 | { | |
15930 | parent_die->has_template_arguments = 1; | |
15931 | ||
15932 | if (!load_all) | |
15933 | { | |
15934 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 15935 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15936 | continue; |
15937 | } | |
15938 | } | |
15939 | ||
0d99eb77 | 15940 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
15941 | Skip their other children. */ |
15942 | if (!load_all | |
15943 | && cu->language == language_cplus | |
15944 | && parent_die != NULL | |
15945 | && parent_die->tag == DW_TAG_subprogram) | |
15946 | { | |
dee91e82 | 15947 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
15948 | continue; |
15949 | } | |
15950 | ||
5afb4e99 DJ |
15951 | /* Check whether this DIE is interesting enough to save. Normally |
15952 | we would not be interested in members here, but there may be | |
15953 | later variables referencing them via DW_AT_specification (for | |
15954 | static members). */ | |
15955 | if (!load_all | |
15956 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 15957 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
15958 | && abbrev->tag != DW_TAG_enumerator |
15959 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 15960 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 15961 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 15962 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 15963 | && abbrev->tag != DW_TAG_module |
95554aad | 15964 | && abbrev->tag != DW_TAG_member |
74921315 KS |
15965 | && abbrev->tag != DW_TAG_imported_unit |
15966 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
15967 | { |
15968 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15969 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
15970 | continue; |
15971 | } | |
15972 | ||
dee91e82 DE |
15973 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
15974 | info_ptr); | |
72bf9492 DJ |
15975 | |
15976 | /* This two-pass algorithm for processing partial symbols has a | |
15977 | high cost in cache pressure. Thus, handle some simple cases | |
15978 | here which cover the majority of C partial symbols. DIEs | |
15979 | which neither have specification tags in them, nor could have | |
15980 | specification tags elsewhere pointing at them, can simply be | |
15981 | processed and discarded. | |
15982 | ||
15983 | This segment is also optional; scan_partial_symbols and | |
15984 | add_partial_symbol will handle these DIEs if we chain | |
15985 | them in normally. When compilers which do not emit large | |
15986 | quantities of duplicate debug information are more common, | |
15987 | this code can probably be removed. */ | |
15988 | ||
15989 | /* Any complete simple types at the top level (pretty much all | |
15990 | of them, for a language without namespaces), can be processed | |
15991 | directly. */ | |
15992 | if (parent_die == NULL | |
15993 | && part_die->has_specification == 0 | |
15994 | && part_die->is_declaration == 0 | |
d8228535 | 15995 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
15996 | || part_die->tag == DW_TAG_base_type |
15997 | || part_die->tag == DW_TAG_subrange_type)) | |
15998 | { | |
15999 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 16000 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 16001 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 | 16002 | &objfile->static_psymbols, |
1762568f | 16003 | 0, cu->language, objfile); |
dee91e82 | 16004 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
16005 | continue; |
16006 | } | |
16007 | ||
d8228535 JK |
16008 | /* The exception for DW_TAG_typedef with has_children above is |
16009 | a workaround of GCC PR debug/47510. In the case of this complaint | |
16010 | type_name_no_tag_or_error will error on such types later. | |
16011 | ||
16012 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
16013 | it could not find the child DIEs referenced later, this is checked | |
16014 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
16015 | ||
16016 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
16017 | complaint (&symfile_complaints, | |
16018 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
16019 | "- DIE at 0x%x [in module %s]"), | |
9c541725 | 16020 | to_underlying (part_die->sect_off), objfile_name (objfile)); |
d8228535 | 16021 | |
72bf9492 DJ |
16022 | /* If we're at the second level, and we're an enumerator, and |
16023 | our parent has no specification (meaning possibly lives in a | |
16024 | namespace elsewhere), then we can add the partial symbol now | |
16025 | instead of queueing it. */ | |
16026 | if (part_die->tag == DW_TAG_enumerator | |
16027 | && parent_die != NULL | |
16028 | && parent_die->die_parent == NULL | |
16029 | && parent_die->tag == DW_TAG_enumeration_type | |
16030 | && parent_die->has_specification == 0) | |
16031 | { | |
16032 | if (part_die->name == NULL) | |
3e43a32a MS |
16033 | complaint (&symfile_complaints, |
16034 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 16035 | else if (building_psymtab) |
04a679b8 | 16036 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 16037 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 16038 | cu->language == language_cplus |
bb5ed363 DE |
16039 | ? &objfile->global_psymbols |
16040 | : &objfile->static_psymbols, | |
1762568f | 16041 | 0, cu->language, objfile); |
72bf9492 | 16042 | |
dee91e82 | 16043 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
16044 | continue; |
16045 | } | |
16046 | ||
16047 | /* We'll save this DIE so link it in. */ | |
16048 | part_die->die_parent = parent_die; | |
16049 | part_die->die_sibling = NULL; | |
16050 | part_die->die_child = NULL; | |
16051 | ||
16052 | if (last_die && last_die == parent_die) | |
16053 | last_die->die_child = part_die; | |
16054 | else if (last_die) | |
16055 | last_die->die_sibling = part_die; | |
16056 | ||
16057 | last_die = part_die; | |
16058 | ||
16059 | if (first_die == NULL) | |
16060 | first_die = part_die; | |
16061 | ||
16062 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
16063 | find interesting need to be in the hash table, because we | |
16064 | also have the parent/sibling/child chains; only those that we | |
16065 | might refer to by offset later during partial symbol reading. | |
16066 | ||
16067 | For now this means things that might have be the target of a | |
16068 | DW_AT_specification, DW_AT_abstract_origin, or | |
16069 | DW_AT_extension. DW_AT_extension will refer only to | |
16070 | namespaces; DW_AT_abstract_origin refers to functions (and | |
16071 | many things under the function DIE, but we do not recurse | |
16072 | into function DIEs during partial symbol reading) and | |
16073 | possibly variables as well; DW_AT_specification refers to | |
16074 | declarations. Declarations ought to have the DW_AT_declaration | |
16075 | flag. It happens that GCC forgets to put it in sometimes, but | |
16076 | only for functions, not for types. | |
16077 | ||
16078 | Adding more things than necessary to the hash table is harmless | |
16079 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
16080 | wasted time in find_partial_die, when we reread the compilation |
16081 | unit with load_all_dies set. */ | |
72bf9492 | 16082 | |
5afb4e99 | 16083 | if (load_all |
72929c62 | 16084 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 16085 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
16086 | || abbrev->tag == DW_TAG_variable |
16087 | || abbrev->tag == DW_TAG_namespace | |
16088 | || part_die->is_declaration) | |
16089 | { | |
16090 | void **slot; | |
16091 | ||
16092 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
16093 | to_underlying (part_die->sect_off), |
16094 | INSERT); | |
72bf9492 DJ |
16095 | *slot = part_die; |
16096 | } | |
16097 | ||
8d749320 | 16098 | part_die = XOBNEW (&cu->comp_unit_obstack, struct partial_die_info); |
72bf9492 DJ |
16099 | |
16100 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 16101 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
16102 | languages we have to, so that we can get at method physnames |
16103 | to infer fully qualified class names, for DW_AT_specification, | |
16104 | and for C++ template arguments. For C++, we also look one level | |
16105 | inside functions to find template arguments (if the name of the | |
16106 | function does not already contain the template arguments). | |
bc30ff58 JB |
16107 | |
16108 | For Ada, we need to scan the children of subprograms and lexical | |
16109 | blocks as well because Ada allows the definition of nested | |
16110 | entities that could be interesting for the debugger, such as | |
16111 | nested subprograms for instance. */ | |
72bf9492 | 16112 | if (last_die->has_children |
5afb4e99 DJ |
16113 | && (load_all |
16114 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 16115 | || last_die->tag == DW_TAG_module |
72bf9492 | 16116 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
16117 | || (cu->language == language_cplus |
16118 | && last_die->tag == DW_TAG_subprogram | |
16119 | && (last_die->name == NULL | |
16120 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
16121 | || (cu->language != language_c |
16122 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 16123 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 16124 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
16125 | || last_die->tag == DW_TAG_union_type)) |
16126 | || (cu->language == language_ada | |
16127 | && (last_die->tag == DW_TAG_subprogram | |
16128 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
16129 | { |
16130 | nesting_level++; | |
16131 | parent_die = last_die; | |
16132 | continue; | |
16133 | } | |
16134 | ||
16135 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 16136 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
16137 | |
16138 | /* Back to the top, do it again. */ | |
16139 | } | |
16140 | } | |
16141 | ||
c906108c SS |
16142 | /* Read a minimal amount of information into the minimal die structure. */ |
16143 | ||
d521ce57 | 16144 | static const gdb_byte * |
dee91e82 DE |
16145 | read_partial_die (const struct die_reader_specs *reader, |
16146 | struct partial_die_info *part_die, | |
16147 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 16148 | const gdb_byte *info_ptr) |
c906108c | 16149 | { |
dee91e82 | 16150 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 16151 | struct objfile *objfile = cu->objfile; |
d521ce57 | 16152 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 16153 | unsigned int i; |
c906108c | 16154 | struct attribute attr; |
c5aa993b | 16155 | int has_low_pc_attr = 0; |
c906108c | 16156 | int has_high_pc_attr = 0; |
91da1414 | 16157 | int high_pc_relative = 0; |
c906108c | 16158 | |
72bf9492 | 16159 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 16160 | |
9c541725 | 16161 | part_die->sect_off = (sect_offset) (info_ptr - buffer); |
72bf9492 DJ |
16162 | |
16163 | info_ptr += abbrev_len; | |
16164 | ||
16165 | if (abbrev == NULL) | |
16166 | return info_ptr; | |
16167 | ||
c906108c SS |
16168 | part_die->tag = abbrev->tag; |
16169 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
16170 | |
16171 | for (i = 0; i < abbrev->num_attrs; ++i) | |
16172 | { | |
dee91e82 | 16173 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
16174 | |
16175 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 16176 | partial symbol table. */ |
c906108c SS |
16177 | switch (attr.name) |
16178 | { | |
16179 | case DW_AT_name: | |
71c25dea TT |
16180 | switch (part_die->tag) |
16181 | { | |
16182 | case DW_TAG_compile_unit: | |
95554aad | 16183 | case DW_TAG_partial_unit: |
348e048f | 16184 | case DW_TAG_type_unit: |
71c25dea TT |
16185 | /* Compilation units have a DW_AT_name that is a filename, not |
16186 | a source language identifier. */ | |
16187 | case DW_TAG_enumeration_type: | |
16188 | case DW_TAG_enumerator: | |
16189 | /* These tags always have simple identifiers already; no need | |
16190 | to canonicalize them. */ | |
16191 | part_die->name = DW_STRING (&attr); | |
16192 | break; | |
16193 | default: | |
16194 | part_die->name | |
16195 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
34a68019 | 16196 | &objfile->per_bfd->storage_obstack); |
71c25dea TT |
16197 | break; |
16198 | } | |
c906108c | 16199 | break; |
31ef98ae | 16200 | case DW_AT_linkage_name: |
c906108c | 16201 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
16202 | /* Note that both forms of linkage name might appear. We |
16203 | assume they will be the same, and we only store the last | |
16204 | one we see. */ | |
94af9270 KS |
16205 | if (cu->language == language_ada) |
16206 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 16207 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
16208 | break; |
16209 | case DW_AT_low_pc: | |
16210 | has_low_pc_attr = 1; | |
31aa7e4e | 16211 | part_die->lowpc = attr_value_as_address (&attr); |
c906108c SS |
16212 | break; |
16213 | case DW_AT_high_pc: | |
16214 | has_high_pc_attr = 1; | |
31aa7e4e JB |
16215 | part_die->highpc = attr_value_as_address (&attr); |
16216 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) | |
16217 | high_pc_relative = 1; | |
c906108c SS |
16218 | break; |
16219 | case DW_AT_location: | |
0963b4bd | 16220 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
16221 | if (attr_form_is_block (&attr)) |
16222 | { | |
95554aad | 16223 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 16224 | } |
3690dd37 | 16225 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 16226 | { |
4d3c2250 | 16227 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
16228 | } |
16229 | else | |
16230 | { | |
4d3c2250 KB |
16231 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
16232 | "partial symbol information"); | |
8e19ed76 | 16233 | } |
c906108c | 16234 | break; |
c906108c SS |
16235 | case DW_AT_external: |
16236 | part_die->is_external = DW_UNSND (&attr); | |
16237 | break; | |
16238 | case DW_AT_declaration: | |
16239 | part_die->is_declaration = DW_UNSND (&attr); | |
16240 | break; | |
16241 | case DW_AT_type: | |
16242 | part_die->has_type = 1; | |
16243 | break; | |
16244 | case DW_AT_abstract_origin: | |
16245 | case DW_AT_specification: | |
72bf9492 DJ |
16246 | case DW_AT_extension: |
16247 | part_die->has_specification = 1; | |
c764a876 | 16248 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
16249 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
16250 | || cu->per_cu->is_dwz); | |
c906108c SS |
16251 | break; |
16252 | case DW_AT_sibling: | |
16253 | /* Ignore absolute siblings, they might point outside of | |
16254 | the current compile unit. */ | |
16255 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
16256 | complaint (&symfile_complaints, |
16257 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 16258 | else |
b9502d3f | 16259 | { |
9c541725 PA |
16260 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
16261 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
16262 | |
16263 | if (sibling_ptr < info_ptr) | |
16264 | complaint (&symfile_complaints, | |
16265 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
16266 | else if (sibling_ptr > reader->buffer_end) |
16267 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
16268 | else |
16269 | part_die->sibling = sibling_ptr; | |
16270 | } | |
c906108c | 16271 | break; |
fa4028e9 JB |
16272 | case DW_AT_byte_size: |
16273 | part_die->has_byte_size = 1; | |
16274 | break; | |
ff908ebf AW |
16275 | case DW_AT_const_value: |
16276 | part_die->has_const_value = 1; | |
16277 | break; | |
68511cec CES |
16278 | case DW_AT_calling_convention: |
16279 | /* DWARF doesn't provide a way to identify a program's source-level | |
16280 | entry point. DW_AT_calling_convention attributes are only meant | |
16281 | to describe functions' calling conventions. | |
16282 | ||
16283 | However, because it's a necessary piece of information in | |
0c1b455e TT |
16284 | Fortran, and before DWARF 4 DW_CC_program was the only |
16285 | piece of debugging information whose definition refers to | |
16286 | a 'main program' at all, several compilers marked Fortran | |
16287 | main programs with DW_CC_program --- even when those | |
16288 | functions use the standard calling conventions. | |
16289 | ||
16290 | Although DWARF now specifies a way to provide this | |
16291 | information, we support this practice for backward | |
16292 | compatibility. */ | |
68511cec | 16293 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e TT |
16294 | && cu->language == language_fortran) |
16295 | part_die->main_subprogram = 1; | |
68511cec | 16296 | break; |
481860b3 GB |
16297 | case DW_AT_inline: |
16298 | if (DW_UNSND (&attr) == DW_INL_inlined | |
16299 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
16300 | part_die->may_be_inlined = 1; | |
16301 | break; | |
95554aad TT |
16302 | |
16303 | case DW_AT_import: | |
16304 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 | 16305 | { |
9c541725 | 16306 | part_die->d.sect_off = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
16307 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
16308 | || cu->per_cu->is_dwz); | |
16309 | } | |
95554aad TT |
16310 | break; |
16311 | ||
0c1b455e TT |
16312 | case DW_AT_main_subprogram: |
16313 | part_die->main_subprogram = DW_UNSND (&attr); | |
16314 | break; | |
16315 | ||
c906108c SS |
16316 | default: |
16317 | break; | |
16318 | } | |
16319 | } | |
16320 | ||
91da1414 MW |
16321 | if (high_pc_relative) |
16322 | part_die->highpc += part_die->lowpc; | |
16323 | ||
9373cf26 JK |
16324 | if (has_low_pc_attr && has_high_pc_attr) |
16325 | { | |
16326 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
16327 | eliminate duplicate copies of functions and vtables and such. | |
16328 | The linker will arbitrarily choose one and discard the others. | |
16329 | The AT_*_pc values for such functions refer to local labels in | |
16330 | these sections. If the section from that file was discarded, the | |
16331 | labels are not in the output, so the relocs get a value of 0. | |
16332 | If this is a discarded function, mark the pc bounds as invalid, | |
16333 | so that GDB will ignore it. */ | |
16334 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
16335 | { | |
bb5ed363 | 16336 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
16337 | |
16338 | complaint (&symfile_complaints, | |
16339 | _("DW_AT_low_pc %s is zero " | |
16340 | "for DIE at 0x%x [in module %s]"), | |
16341 | paddress (gdbarch, part_die->lowpc), | |
9c541725 | 16342 | to_underlying (part_die->sect_off), objfile_name (objfile)); |
9373cf26 JK |
16343 | } |
16344 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
16345 | else if (part_die->lowpc >= part_die->highpc) | |
16346 | { | |
bb5ed363 | 16347 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
16348 | |
16349 | complaint (&symfile_complaints, | |
16350 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
16351 | "for DIE at 0x%x [in module %s]"), | |
16352 | paddress (gdbarch, part_die->lowpc), | |
16353 | paddress (gdbarch, part_die->highpc), | |
9c541725 PA |
16354 | to_underlying (part_die->sect_off), |
16355 | objfile_name (objfile)); | |
9373cf26 JK |
16356 | } |
16357 | else | |
16358 | part_die->has_pc_info = 1; | |
16359 | } | |
85cbf3d3 | 16360 | |
c906108c SS |
16361 | return info_ptr; |
16362 | } | |
16363 | ||
72bf9492 DJ |
16364 | /* Find a cached partial DIE at OFFSET in CU. */ |
16365 | ||
16366 | static struct partial_die_info * | |
9c541725 | 16367 | find_partial_die_in_comp_unit (sect_offset sect_off, struct dwarf2_cu *cu) |
72bf9492 DJ |
16368 | { |
16369 | struct partial_die_info *lookup_die = NULL; | |
16370 | struct partial_die_info part_die; | |
16371 | ||
9c541725 | 16372 | part_die.sect_off = sect_off; |
9a3c8263 SM |
16373 | lookup_die = ((struct partial_die_info *) |
16374 | htab_find_with_hash (cu->partial_dies, &part_die, | |
9c541725 | 16375 | to_underlying (sect_off))); |
72bf9492 | 16376 | |
72bf9492 DJ |
16377 | return lookup_die; |
16378 | } | |
16379 | ||
348e048f DE |
16380 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
16381 | except in the case of .debug_types DIEs which do not reference | |
16382 | outside their CU (they do however referencing other types via | |
55f1336d | 16383 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
16384 | |
16385 | static struct partial_die_info * | |
9c541725 | 16386 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 16387 | { |
bb5ed363 | 16388 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
16389 | struct dwarf2_per_cu_data *per_cu = NULL; |
16390 | struct partial_die_info *pd = NULL; | |
72bf9492 | 16391 | |
36586728 | 16392 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 16393 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 16394 | { |
9c541725 | 16395 | pd = find_partial_die_in_comp_unit (sect_off, cu); |
5afb4e99 DJ |
16396 | if (pd != NULL) |
16397 | return pd; | |
0d99eb77 DE |
16398 | /* We missed recording what we needed. |
16399 | Load all dies and try again. */ | |
16400 | per_cu = cu->per_cu; | |
5afb4e99 | 16401 | } |
0d99eb77 DE |
16402 | else |
16403 | { | |
16404 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 16405 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 16406 | { |
9c541725 PA |
16407 | error (_("Dwarf Error: Type Unit at offset 0x%x contains" |
16408 | " external reference to offset 0x%x [in module %s].\n"), | |
16409 | to_underlying (cu->header.sect_off), to_underlying (sect_off), | |
0d99eb77 DE |
16410 | bfd_get_filename (objfile->obfd)); |
16411 | } | |
9c541725 | 16412 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
36586728 | 16413 | objfile); |
72bf9492 | 16414 | |
0d99eb77 DE |
16415 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
16416 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 16417 | |
0d99eb77 | 16418 | per_cu->cu->last_used = 0; |
9c541725 | 16419 | pd = find_partial_die_in_comp_unit (sect_off, per_cu->cu); |
0d99eb77 | 16420 | } |
5afb4e99 | 16421 | |
dee91e82 DE |
16422 | /* If we didn't find it, and not all dies have been loaded, |
16423 | load them all and try again. */ | |
16424 | ||
5afb4e99 DJ |
16425 | if (pd == NULL && per_cu->load_all_dies == 0) |
16426 | { | |
5afb4e99 | 16427 | per_cu->load_all_dies = 1; |
fd820528 DE |
16428 | |
16429 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
16430 | THIS_CU->cu may already be in use. So we can't just free it and | |
16431 | replace its DIEs with the ones we read in. Instead, we leave those | |
16432 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
16433 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
16434 | set. */ | |
dee91e82 | 16435 | load_partial_comp_unit (per_cu); |
5afb4e99 | 16436 | |
9c541725 | 16437 | pd = find_partial_die_in_comp_unit (sect_off, per_cu->cu); |
5afb4e99 DJ |
16438 | } |
16439 | ||
16440 | if (pd == NULL) | |
16441 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
16442 | _("could not find partial DIE 0x%x " |
16443 | "in cache [from module %s]\n"), | |
9c541725 | 16444 | to_underlying (sect_off), bfd_get_filename (objfile->obfd)); |
5afb4e99 | 16445 | return pd; |
72bf9492 DJ |
16446 | } |
16447 | ||
abc72ce4 DE |
16448 | /* See if we can figure out if the class lives in a namespace. We do |
16449 | this by looking for a member function; its demangled name will | |
16450 | contain namespace info, if there is any. */ | |
16451 | ||
16452 | static void | |
16453 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
16454 | struct dwarf2_cu *cu) | |
16455 | { | |
16456 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
16457 | what template types look like, because the demangler | |
16458 | frequently doesn't give the same name as the debug info. We | |
16459 | could fix this by only using the demangled name to get the | |
16460 | prefix (but see comment in read_structure_type). */ | |
16461 | ||
16462 | struct partial_die_info *real_pdi; | |
16463 | struct partial_die_info *child_pdi; | |
16464 | ||
16465 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
16466 | we should not do this. We'll prepend the parent's fully qualified | |
16467 | name when we create the partial symbol. */ | |
16468 | ||
16469 | real_pdi = struct_pdi; | |
16470 | while (real_pdi->has_specification) | |
36586728 TT |
16471 | real_pdi = find_partial_die (real_pdi->spec_offset, |
16472 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
16473 | |
16474 | if (real_pdi->die_parent != NULL) | |
16475 | return; | |
16476 | ||
16477 | for (child_pdi = struct_pdi->die_child; | |
16478 | child_pdi != NULL; | |
16479 | child_pdi = child_pdi->die_sibling) | |
16480 | { | |
16481 | if (child_pdi->tag == DW_TAG_subprogram | |
16482 | && child_pdi->linkage_name != NULL) | |
16483 | { | |
16484 | char *actual_class_name | |
16485 | = language_class_name_from_physname (cu->language_defn, | |
16486 | child_pdi->linkage_name); | |
16487 | if (actual_class_name != NULL) | |
16488 | { | |
16489 | struct_pdi->name | |
224c3ddb SM |
16490 | = ((const char *) |
16491 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
16492 | actual_class_name, | |
16493 | strlen (actual_class_name))); | |
abc72ce4 DE |
16494 | xfree (actual_class_name); |
16495 | } | |
16496 | break; | |
16497 | } | |
16498 | } | |
16499 | } | |
16500 | ||
72bf9492 DJ |
16501 | /* Adjust PART_DIE before generating a symbol for it. This function |
16502 | may set the is_external flag or change the DIE's name. */ | |
16503 | ||
16504 | static void | |
16505 | fixup_partial_die (struct partial_die_info *part_die, | |
16506 | struct dwarf2_cu *cu) | |
16507 | { | |
abc72ce4 DE |
16508 | /* Once we've fixed up a die, there's no point in doing so again. |
16509 | This also avoids a memory leak if we were to call | |
16510 | guess_partial_die_structure_name multiple times. */ | |
16511 | if (part_die->fixup_called) | |
16512 | return; | |
16513 | ||
72bf9492 DJ |
16514 | /* If we found a reference attribute and the DIE has no name, try |
16515 | to find a name in the referred to DIE. */ | |
16516 | ||
16517 | if (part_die->name == NULL && part_die->has_specification) | |
16518 | { | |
16519 | struct partial_die_info *spec_die; | |
72bf9492 | 16520 | |
36586728 TT |
16521 | spec_die = find_partial_die (part_die->spec_offset, |
16522 | part_die->spec_is_dwz, cu); | |
72bf9492 | 16523 | |
10b3939b | 16524 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
16525 | |
16526 | if (spec_die->name) | |
16527 | { | |
16528 | part_die->name = spec_die->name; | |
16529 | ||
16530 | /* Copy DW_AT_external attribute if it is set. */ | |
16531 | if (spec_die->is_external) | |
16532 | part_die->is_external = spec_die->is_external; | |
16533 | } | |
16534 | } | |
16535 | ||
16536 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
16537 | |
16538 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 16539 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 16540 | |
abc72ce4 DE |
16541 | /* If there is no parent die to provide a namespace, and there are |
16542 | children, see if we can determine the namespace from their linkage | |
122d1940 | 16543 | name. */ |
abc72ce4 | 16544 | if (cu->language == language_cplus |
8b70b953 | 16545 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
16546 | && part_die->die_parent == NULL |
16547 | && part_die->has_children | |
16548 | && (part_die->tag == DW_TAG_class_type | |
16549 | || part_die->tag == DW_TAG_structure_type | |
16550 | || part_die->tag == DW_TAG_union_type)) | |
16551 | guess_partial_die_structure_name (part_die, cu); | |
16552 | ||
53832f31 TT |
16553 | /* GCC might emit a nameless struct or union that has a linkage |
16554 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
16555 | if (part_die->name == NULL | |
96408a79 SA |
16556 | && (part_die->tag == DW_TAG_class_type |
16557 | || part_die->tag == DW_TAG_interface_type | |
16558 | || part_die->tag == DW_TAG_structure_type | |
16559 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
16560 | && part_die->linkage_name != NULL) |
16561 | { | |
16562 | char *demangled; | |
16563 | ||
8de20a37 | 16564 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
16565 | if (demangled) |
16566 | { | |
96408a79 SA |
16567 | const char *base; |
16568 | ||
16569 | /* Strip any leading namespaces/classes, keep only the base name. | |
16570 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
16571 | base = strrchr (demangled, ':'); | |
16572 | if (base && base > demangled && base[-1] == ':') | |
16573 | base++; | |
16574 | else | |
16575 | base = demangled; | |
16576 | ||
34a68019 | 16577 | part_die->name |
224c3ddb SM |
16578 | = ((const char *) |
16579 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
16580 | base, strlen (base))); | |
53832f31 TT |
16581 | xfree (demangled); |
16582 | } | |
16583 | } | |
16584 | ||
abc72ce4 | 16585 | part_die->fixup_called = 1; |
72bf9492 DJ |
16586 | } |
16587 | ||
a8329558 | 16588 | /* Read an attribute value described by an attribute form. */ |
c906108c | 16589 | |
d521ce57 | 16590 | static const gdb_byte * |
dee91e82 DE |
16591 | read_attribute_value (const struct die_reader_specs *reader, |
16592 | struct attribute *attr, unsigned form, | |
43988095 | 16593 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 16594 | { |
dee91e82 | 16595 | struct dwarf2_cu *cu = reader->cu; |
3e29f34a MR |
16596 | struct objfile *objfile = cu->objfile; |
16597 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
dee91e82 | 16598 | bfd *abfd = reader->abfd; |
e7c27a73 | 16599 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16600 | unsigned int bytes_read; |
16601 | struct dwarf_block *blk; | |
16602 | ||
aead7601 | 16603 | attr->form = (enum dwarf_form) form; |
a8329558 | 16604 | switch (form) |
c906108c | 16605 | { |
c906108c | 16606 | case DW_FORM_ref_addr: |
ae411497 | 16607 | if (cu->header.version == 2) |
4568ecf9 | 16608 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 16609 | else |
4568ecf9 DE |
16610 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
16611 | &cu->header, &bytes_read); | |
ae411497 TT |
16612 | info_ptr += bytes_read; |
16613 | break; | |
36586728 TT |
16614 | case DW_FORM_GNU_ref_alt: |
16615 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16616 | info_ptr += bytes_read; | |
16617 | break; | |
ae411497 | 16618 | case DW_FORM_addr: |
e7c27a73 | 16619 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 16620 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 16621 | info_ptr += bytes_read; |
c906108c SS |
16622 | break; |
16623 | case DW_FORM_block2: | |
7b5a2f43 | 16624 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16625 | blk->size = read_2_bytes (abfd, info_ptr); |
16626 | info_ptr += 2; | |
16627 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16628 | info_ptr += blk->size; | |
16629 | DW_BLOCK (attr) = blk; | |
16630 | break; | |
16631 | case DW_FORM_block4: | |
7b5a2f43 | 16632 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16633 | blk->size = read_4_bytes (abfd, info_ptr); |
16634 | info_ptr += 4; | |
16635 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16636 | info_ptr += blk->size; | |
16637 | DW_BLOCK (attr) = blk; | |
16638 | break; | |
16639 | case DW_FORM_data2: | |
16640 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
16641 | info_ptr += 2; | |
16642 | break; | |
16643 | case DW_FORM_data4: | |
16644 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
16645 | info_ptr += 4; | |
16646 | break; | |
16647 | case DW_FORM_data8: | |
16648 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
16649 | info_ptr += 8; | |
16650 | break; | |
0224619f JK |
16651 | case DW_FORM_data16: |
16652 | blk = dwarf_alloc_block (cu); | |
16653 | blk->size = 16; | |
16654 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
16655 | info_ptr += 16; | |
16656 | DW_BLOCK (attr) = blk; | |
16657 | break; | |
2dc7f7b3 TT |
16658 | case DW_FORM_sec_offset: |
16659 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
16660 | info_ptr += bytes_read; | |
16661 | break; | |
c906108c | 16662 | case DW_FORM_string: |
9b1c24c8 | 16663 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 16664 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
16665 | info_ptr += bytes_read; |
16666 | break; | |
4bdf3d34 | 16667 | case DW_FORM_strp: |
36586728 TT |
16668 | if (!cu->per_cu->is_dwz) |
16669 | { | |
16670 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
16671 | &bytes_read); | |
16672 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16673 | info_ptr += bytes_read; | |
16674 | break; | |
16675 | } | |
16676 | /* FALLTHROUGH */ | |
43988095 JK |
16677 | case DW_FORM_line_strp: |
16678 | if (!cu->per_cu->is_dwz) | |
16679 | { | |
16680 | DW_STRING (attr) = read_indirect_line_string (abfd, info_ptr, | |
16681 | cu_header, &bytes_read); | |
16682 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16683 | info_ptr += bytes_read; | |
16684 | break; | |
16685 | } | |
16686 | /* FALLTHROUGH */ | |
36586728 TT |
16687 | case DW_FORM_GNU_strp_alt: |
16688 | { | |
16689 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
16690 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
16691 | &bytes_read); | |
16692 | ||
16693 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
16694 | DW_STRING_IS_CANONICAL (attr) = 0; | |
16695 | info_ptr += bytes_read; | |
16696 | } | |
4bdf3d34 | 16697 | break; |
2dc7f7b3 | 16698 | case DW_FORM_exprloc: |
c906108c | 16699 | case DW_FORM_block: |
7b5a2f43 | 16700 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16701 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16702 | info_ptr += bytes_read; | |
16703 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16704 | info_ptr += blk->size; | |
16705 | DW_BLOCK (attr) = blk; | |
16706 | break; | |
16707 | case DW_FORM_block1: | |
7b5a2f43 | 16708 | blk = dwarf_alloc_block (cu); |
c906108c SS |
16709 | blk->size = read_1_byte (abfd, info_ptr); |
16710 | info_ptr += 1; | |
16711 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
16712 | info_ptr += blk->size; | |
16713 | DW_BLOCK (attr) = blk; | |
16714 | break; | |
16715 | case DW_FORM_data1: | |
16716 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16717 | info_ptr += 1; | |
16718 | break; | |
16719 | case DW_FORM_flag: | |
16720 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
16721 | info_ptr += 1; | |
16722 | break; | |
2dc7f7b3 TT |
16723 | case DW_FORM_flag_present: |
16724 | DW_UNSND (attr) = 1; | |
16725 | break; | |
c906108c SS |
16726 | case DW_FORM_sdata: |
16727 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
16728 | info_ptr += bytes_read; | |
16729 | break; | |
16730 | case DW_FORM_udata: | |
16731 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16732 | info_ptr += bytes_read; | |
16733 | break; | |
16734 | case DW_FORM_ref1: | |
9c541725 | 16735 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 16736 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
16737 | info_ptr += 1; |
16738 | break; | |
16739 | case DW_FORM_ref2: | |
9c541725 | 16740 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 16741 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
16742 | info_ptr += 2; |
16743 | break; | |
16744 | case DW_FORM_ref4: | |
9c541725 | 16745 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 16746 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
16747 | info_ptr += 4; |
16748 | break; | |
613e1657 | 16749 | case DW_FORM_ref8: |
9c541725 | 16750 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 16751 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
16752 | info_ptr += 8; |
16753 | break; | |
55f1336d | 16754 | case DW_FORM_ref_sig8: |
ac9ec31b | 16755 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
16756 | info_ptr += 8; |
16757 | break; | |
c906108c | 16758 | case DW_FORM_ref_udata: |
9c541725 | 16759 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 16760 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
16761 | info_ptr += bytes_read; |
16762 | break; | |
c906108c | 16763 | case DW_FORM_indirect: |
a8329558 KW |
16764 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
16765 | info_ptr += bytes_read; | |
43988095 JK |
16766 | if (form == DW_FORM_implicit_const) |
16767 | { | |
16768 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
16769 | info_ptr += bytes_read; | |
16770 | } | |
16771 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
16772 | info_ptr); | |
16773 | break; | |
16774 | case DW_FORM_implicit_const: | |
16775 | DW_SND (attr) = implicit_const; | |
a8329558 | 16776 | break; |
3019eac3 DE |
16777 | case DW_FORM_GNU_addr_index: |
16778 | if (reader->dwo_file == NULL) | |
16779 | { | |
16780 | /* For now flag a hard error. | |
16781 | Later we can turn this into a complaint. */ | |
16782 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16783 | dwarf_form_name (form), | |
16784 | bfd_get_filename (abfd)); | |
16785 | } | |
16786 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
16787 | info_ptr += bytes_read; | |
16788 | break; | |
16789 | case DW_FORM_GNU_str_index: | |
16790 | if (reader->dwo_file == NULL) | |
16791 | { | |
16792 | /* For now flag a hard error. | |
16793 | Later we can turn this into a complaint if warranted. */ | |
16794 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
16795 | dwarf_form_name (form), | |
16796 | bfd_get_filename (abfd)); | |
16797 | } | |
16798 | { | |
16799 | ULONGEST str_index = | |
16800 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
16801 | ||
342587c4 | 16802 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
16803 | DW_STRING_IS_CANONICAL (attr) = 0; |
16804 | info_ptr += bytes_read; | |
16805 | } | |
16806 | break; | |
c906108c | 16807 | default: |
8a3fe4f8 | 16808 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
16809 | dwarf_form_name (form), |
16810 | bfd_get_filename (abfd)); | |
c906108c | 16811 | } |
28e94949 | 16812 | |
36586728 | 16813 | /* Super hack. */ |
7771576e | 16814 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
16815 | attr->form = DW_FORM_GNU_ref_alt; |
16816 | ||
28e94949 JB |
16817 | /* We have seen instances where the compiler tried to emit a byte |
16818 | size attribute of -1 which ended up being encoded as an unsigned | |
16819 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
16820 | an object of this size seems pretty unlikely so we can relatively | |
16821 | safely treat these cases as if the size attribute was invalid and | |
16822 | treat them as zero by default. */ | |
16823 | if (attr->name == DW_AT_byte_size | |
16824 | && form == DW_FORM_data4 | |
16825 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
16826 | { |
16827 | complaint | |
16828 | (&symfile_complaints, | |
43bbcdc2 PH |
16829 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
16830 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
16831 | DW_UNSND (attr) = 0; |
16832 | } | |
28e94949 | 16833 | |
c906108c SS |
16834 | return info_ptr; |
16835 | } | |
16836 | ||
a8329558 KW |
16837 | /* Read an attribute described by an abbreviated attribute. */ |
16838 | ||
d521ce57 | 16839 | static const gdb_byte * |
dee91e82 DE |
16840 | read_attribute (const struct die_reader_specs *reader, |
16841 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 16842 | const gdb_byte *info_ptr) |
a8329558 KW |
16843 | { |
16844 | attr->name = abbrev->name; | |
43988095 JK |
16845 | return read_attribute_value (reader, attr, abbrev->form, |
16846 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
16847 | } |
16848 | ||
0963b4bd | 16849 | /* Read dwarf information from a buffer. */ |
c906108c SS |
16850 | |
16851 | static unsigned int | |
a1855c1d | 16852 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16853 | { |
fe1b8b76 | 16854 | return bfd_get_8 (abfd, buf); |
c906108c SS |
16855 | } |
16856 | ||
16857 | static int | |
a1855c1d | 16858 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 16859 | { |
fe1b8b76 | 16860 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
16861 | } |
16862 | ||
16863 | static unsigned int | |
a1855c1d | 16864 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16865 | { |
fe1b8b76 | 16866 | return bfd_get_16 (abfd, buf); |
c906108c SS |
16867 | } |
16868 | ||
21ae7a4d | 16869 | static int |
a1855c1d | 16870 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16871 | { |
16872 | return bfd_get_signed_16 (abfd, buf); | |
16873 | } | |
16874 | ||
c906108c | 16875 | static unsigned int |
a1855c1d | 16876 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16877 | { |
fe1b8b76 | 16878 | return bfd_get_32 (abfd, buf); |
c906108c SS |
16879 | } |
16880 | ||
21ae7a4d | 16881 | static int |
a1855c1d | 16882 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
16883 | { |
16884 | return bfd_get_signed_32 (abfd, buf); | |
16885 | } | |
16886 | ||
93311388 | 16887 | static ULONGEST |
a1855c1d | 16888 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 16889 | { |
fe1b8b76 | 16890 | return bfd_get_64 (abfd, buf); |
c906108c SS |
16891 | } |
16892 | ||
16893 | static CORE_ADDR | |
d521ce57 | 16894 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 16895 | unsigned int *bytes_read) |
c906108c | 16896 | { |
e7c27a73 | 16897 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
16898 | CORE_ADDR retval = 0; |
16899 | ||
107d2387 | 16900 | if (cu_header->signed_addr_p) |
c906108c | 16901 | { |
107d2387 AC |
16902 | switch (cu_header->addr_size) |
16903 | { | |
16904 | case 2: | |
fe1b8b76 | 16905 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
16906 | break; |
16907 | case 4: | |
fe1b8b76 | 16908 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
16909 | break; |
16910 | case 8: | |
fe1b8b76 | 16911 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
16912 | break; |
16913 | default: | |
8e65ff28 | 16914 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 16915 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 16916 | bfd_get_filename (abfd)); |
107d2387 AC |
16917 | } |
16918 | } | |
16919 | else | |
16920 | { | |
16921 | switch (cu_header->addr_size) | |
16922 | { | |
16923 | case 2: | |
fe1b8b76 | 16924 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
16925 | break; |
16926 | case 4: | |
fe1b8b76 | 16927 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
16928 | break; |
16929 | case 8: | |
fe1b8b76 | 16930 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
16931 | break; |
16932 | default: | |
8e65ff28 | 16933 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
16934 | _("read_address: bad switch, " |
16935 | "unsigned [in module %s]"), | |
659b0389 | 16936 | bfd_get_filename (abfd)); |
107d2387 | 16937 | } |
c906108c | 16938 | } |
64367e0a | 16939 | |
107d2387 AC |
16940 | *bytes_read = cu_header->addr_size; |
16941 | return retval; | |
c906108c SS |
16942 | } |
16943 | ||
f7ef9339 | 16944 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
16945 | specification allows the initial length to take up either 4 bytes |
16946 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
16947 | bytes describe the length and all offsets will be 8 bytes in length | |
16948 | instead of 4. | |
16949 | ||
f7ef9339 KB |
16950 | An older, non-standard 64-bit format is also handled by this |
16951 | function. The older format in question stores the initial length | |
16952 | as an 8-byte quantity without an escape value. Lengths greater | |
16953 | than 2^32 aren't very common which means that the initial 4 bytes | |
16954 | is almost always zero. Since a length value of zero doesn't make | |
16955 | sense for the 32-bit format, this initial zero can be considered to | |
16956 | be an escape value which indicates the presence of the older 64-bit | |
16957 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
16958 | greater than 4GB. If it becomes necessary to handle lengths |
16959 | somewhat larger than 4GB, we could allow other small values (such | |
16960 | as the non-sensical values of 1, 2, and 3) to also be used as | |
16961 | escape values indicating the presence of the old format. | |
f7ef9339 | 16962 | |
917c78fc MK |
16963 | The value returned via bytes_read should be used to increment the |
16964 | relevant pointer after calling read_initial_length(). | |
c764a876 | 16965 | |
613e1657 KB |
16966 | [ Note: read_initial_length() and read_offset() are based on the |
16967 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 16968 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
16969 | from: |
16970 | ||
f7ef9339 | 16971 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 16972 | |
613e1657 KB |
16973 | This document is only a draft and is subject to change. (So beware.) |
16974 | ||
f7ef9339 | 16975 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
16976 | determined empirically by examining 64-bit ELF files produced by |
16977 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
16978 | |
16979 | - Kevin, July 16, 2002 | |
613e1657 KB |
16980 | ] */ |
16981 | ||
16982 | static LONGEST | |
d521ce57 | 16983 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 16984 | { |
fe1b8b76 | 16985 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 16986 | |
dd373385 | 16987 | if (length == 0xffffffff) |
613e1657 | 16988 | { |
fe1b8b76 | 16989 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 16990 | *bytes_read = 12; |
613e1657 | 16991 | } |
dd373385 | 16992 | else if (length == 0) |
f7ef9339 | 16993 | { |
dd373385 | 16994 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 16995 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 16996 | *bytes_read = 8; |
f7ef9339 | 16997 | } |
613e1657 KB |
16998 | else |
16999 | { | |
17000 | *bytes_read = 4; | |
613e1657 KB |
17001 | } |
17002 | ||
c764a876 DE |
17003 | return length; |
17004 | } | |
dd373385 | 17005 | |
c764a876 DE |
17006 | /* Cover function for read_initial_length. |
17007 | Returns the length of the object at BUF, and stores the size of the | |
17008 | initial length in *BYTES_READ and stores the size that offsets will be in | |
17009 | *OFFSET_SIZE. | |
17010 | If the initial length size is not equivalent to that specified in | |
17011 | CU_HEADER then issue a complaint. | |
17012 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 17013 | |
c764a876 | 17014 | static LONGEST |
d521ce57 | 17015 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
17016 | const struct comp_unit_head *cu_header, |
17017 | unsigned int *bytes_read, | |
17018 | unsigned int *offset_size) | |
17019 | { | |
17020 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
17021 | ||
17022 | gdb_assert (cu_header->initial_length_size == 4 | |
17023 | || cu_header->initial_length_size == 8 | |
17024 | || cu_header->initial_length_size == 12); | |
17025 | ||
17026 | if (cu_header->initial_length_size != *bytes_read) | |
17027 | complaint (&symfile_complaints, | |
17028 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 17029 | |
c764a876 | 17030 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 17031 | return length; |
613e1657 KB |
17032 | } |
17033 | ||
17034 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 17035 | given by cu_header->offset_size. */ |
613e1657 KB |
17036 | |
17037 | static LONGEST | |
d521ce57 TT |
17038 | read_offset (bfd *abfd, const gdb_byte *buf, |
17039 | const struct comp_unit_head *cu_header, | |
891d2f0b | 17040 | unsigned int *bytes_read) |
c764a876 DE |
17041 | { |
17042 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 17043 | |
c764a876 DE |
17044 | *bytes_read = cu_header->offset_size; |
17045 | return offset; | |
17046 | } | |
17047 | ||
17048 | /* Read an offset from the data stream. */ | |
17049 | ||
17050 | static LONGEST | |
d521ce57 | 17051 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
17052 | { |
17053 | LONGEST retval = 0; | |
17054 | ||
c764a876 | 17055 | switch (offset_size) |
613e1657 KB |
17056 | { |
17057 | case 4: | |
fe1b8b76 | 17058 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
17059 | break; |
17060 | case 8: | |
fe1b8b76 | 17061 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
17062 | break; |
17063 | default: | |
8e65ff28 | 17064 | internal_error (__FILE__, __LINE__, |
c764a876 | 17065 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 17066 | bfd_get_filename (abfd)); |
613e1657 KB |
17067 | } |
17068 | ||
917c78fc | 17069 | return retval; |
613e1657 KB |
17070 | } |
17071 | ||
d521ce57 TT |
17072 | static const gdb_byte * |
17073 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
17074 | { |
17075 | /* If the size of a host char is 8 bits, we can return a pointer | |
17076 | to the buffer, otherwise we have to copy the data to a buffer | |
17077 | allocated on the temporary obstack. */ | |
4bdf3d34 | 17078 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 17079 | return buf; |
c906108c SS |
17080 | } |
17081 | ||
d521ce57 TT |
17082 | static const char * |
17083 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
17084 | unsigned int *bytes_read_ptr) | |
c906108c SS |
17085 | { |
17086 | /* If the size of a host char is 8 bits, we can return a pointer | |
17087 | to the string, otherwise we have to copy the string to a buffer | |
17088 | allocated on the temporary obstack. */ | |
4bdf3d34 | 17089 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
17090 | if (*buf == '\0') |
17091 | { | |
17092 | *bytes_read_ptr = 1; | |
17093 | return NULL; | |
17094 | } | |
d521ce57 TT |
17095 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
17096 | return (const char *) buf; | |
4bdf3d34 JJ |
17097 | } |
17098 | ||
43988095 JK |
17099 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
17100 | reporting strings FORM_NAME and SECT_NAME. */ | |
17101 | ||
d521ce57 | 17102 | static const char * |
43988095 JK |
17103 | read_indirect_string_at_offset_from (bfd *abfd, LONGEST str_offset, |
17104 | struct dwarf2_section_info *sect, | |
17105 | const char *form_name, | |
17106 | const char *sect_name) | |
17107 | { | |
17108 | dwarf2_read_section (dwarf2_per_objfile->objfile, sect); | |
17109 | if (sect->buffer == NULL) | |
17110 | error (_("%s used without %s section [in module %s]"), | |
17111 | form_name, sect_name, bfd_get_filename (abfd)); | |
17112 | if (str_offset >= sect->size) | |
17113 | error (_("%s pointing outside of %s section [in module %s]"), | |
17114 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 17115 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 17116 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 17117 | return NULL; |
43988095 JK |
17118 | return (const char *) (sect->buffer + str_offset); |
17119 | } | |
17120 | ||
17121 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
17122 | ||
17123 | static const char * | |
17124 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) | |
17125 | { | |
17126 | return read_indirect_string_at_offset_from (abfd, str_offset, | |
17127 | &dwarf2_per_objfile->str, | |
17128 | "DW_FORM_strp", ".debug_str"); | |
17129 | } | |
17130 | ||
17131 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
17132 | ||
17133 | static const char * | |
17134 | read_indirect_line_string_at_offset (bfd *abfd, LONGEST str_offset) | |
17135 | { | |
17136 | return read_indirect_string_at_offset_from (abfd, str_offset, | |
17137 | &dwarf2_per_objfile->line_str, | |
17138 | "DW_FORM_line_strp", | |
17139 | ".debug_line_str"); | |
c906108c SS |
17140 | } |
17141 | ||
36586728 TT |
17142 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
17143 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
17144 | the string consists of a single NUL byte, return NULL; otherwise | |
17145 | return a pointer to the string. */ | |
17146 | ||
d521ce57 | 17147 | static const char * |
36586728 TT |
17148 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
17149 | { | |
17150 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
17151 | ||
17152 | if (dwz->str.buffer == NULL) | |
17153 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
17154 | "section [in module %s]"), | |
17155 | bfd_get_filename (dwz->dwz_bfd)); | |
17156 | if (str_offset >= dwz->str.size) | |
17157 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
17158 | ".debug_str section [in module %s]"), | |
17159 | bfd_get_filename (dwz->dwz_bfd)); | |
17160 | gdb_assert (HOST_CHAR_BIT == 8); | |
17161 | if (dwz->str.buffer[str_offset] == '\0') | |
17162 | return NULL; | |
d521ce57 | 17163 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
17164 | } |
17165 | ||
43988095 JK |
17166 | /* Return pointer to string at .debug_str offset as read from BUF. |
17167 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
17168 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
17169 | ||
d521ce57 TT |
17170 | static const char * |
17171 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
17172 | const struct comp_unit_head *cu_header, |
17173 | unsigned int *bytes_read_ptr) | |
17174 | { | |
17175 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
17176 | ||
17177 | return read_indirect_string_at_offset (abfd, str_offset); | |
17178 | } | |
17179 | ||
43988095 JK |
17180 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
17181 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
17182 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
17183 | ||
17184 | static const char * | |
17185 | read_indirect_line_string (bfd *abfd, const gdb_byte *buf, | |
17186 | const struct comp_unit_head *cu_header, | |
17187 | unsigned int *bytes_read_ptr) | |
17188 | { | |
17189 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
17190 | ||
17191 | return read_indirect_line_string_at_offset (abfd, str_offset); | |
17192 | } | |
17193 | ||
17194 | ULONGEST | |
d521ce57 | 17195 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 17196 | unsigned int *bytes_read_ptr) |
c906108c | 17197 | { |
12df843f | 17198 | ULONGEST result; |
ce5d95e1 | 17199 | unsigned int num_read; |
870f88f7 | 17200 | int shift; |
c906108c SS |
17201 | unsigned char byte; |
17202 | ||
17203 | result = 0; | |
17204 | shift = 0; | |
17205 | num_read = 0; | |
c906108c SS |
17206 | while (1) |
17207 | { | |
fe1b8b76 | 17208 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
17209 | buf++; |
17210 | num_read++; | |
12df843f | 17211 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
17212 | if ((byte & 128) == 0) |
17213 | { | |
17214 | break; | |
17215 | } | |
17216 | shift += 7; | |
17217 | } | |
17218 | *bytes_read_ptr = num_read; | |
17219 | return result; | |
17220 | } | |
17221 | ||
12df843f | 17222 | static LONGEST |
d521ce57 TT |
17223 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
17224 | unsigned int *bytes_read_ptr) | |
c906108c | 17225 | { |
12df843f | 17226 | LONGEST result; |
870f88f7 | 17227 | int shift, num_read; |
c906108c SS |
17228 | unsigned char byte; |
17229 | ||
17230 | result = 0; | |
17231 | shift = 0; | |
c906108c | 17232 | num_read = 0; |
c906108c SS |
17233 | while (1) |
17234 | { | |
fe1b8b76 | 17235 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
17236 | buf++; |
17237 | num_read++; | |
12df843f | 17238 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
17239 | shift += 7; |
17240 | if ((byte & 128) == 0) | |
17241 | { | |
17242 | break; | |
17243 | } | |
17244 | } | |
77e0b926 | 17245 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 17246 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
17247 | *bytes_read_ptr = num_read; |
17248 | return result; | |
17249 | } | |
17250 | ||
3019eac3 DE |
17251 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
17252 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
17253 | ADDR_SIZE is the size of addresses from the CU header. */ | |
17254 | ||
17255 | static CORE_ADDR | |
17256 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
17257 | { | |
17258 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
17259 | bfd *abfd = objfile->obfd; | |
17260 | const gdb_byte *info_ptr; | |
17261 | ||
17262 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
17263 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
17264 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 17265 | objfile_name (objfile)); |
3019eac3 DE |
17266 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
17267 | error (_("DW_FORM_addr_index pointing outside of " | |
17268 | ".debug_addr section [in module %s]"), | |
4262abfb | 17269 | objfile_name (objfile)); |
3019eac3 DE |
17270 | info_ptr = (dwarf2_per_objfile->addr.buffer |
17271 | + addr_base + addr_index * addr_size); | |
17272 | if (addr_size == 4) | |
17273 | return bfd_get_32 (abfd, info_ptr); | |
17274 | else | |
17275 | return bfd_get_64 (abfd, info_ptr); | |
17276 | } | |
17277 | ||
17278 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
17279 | ||
17280 | static CORE_ADDR | |
17281 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
17282 | { | |
17283 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
17284 | } | |
17285 | ||
17286 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
17287 | ||
17288 | static CORE_ADDR | |
d521ce57 | 17289 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
17290 | unsigned int *bytes_read) |
17291 | { | |
17292 | bfd *abfd = cu->objfile->obfd; | |
17293 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
17294 | ||
17295 | return read_addr_index (cu, addr_index); | |
17296 | } | |
17297 | ||
17298 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
17299 | back to dwarf2_read_addr_index. */ | |
17300 | ||
17301 | struct dwarf2_read_addr_index_data | |
17302 | { | |
17303 | ULONGEST addr_base; | |
17304 | int addr_size; | |
17305 | }; | |
17306 | ||
17307 | /* die_reader_func for dwarf2_read_addr_index. */ | |
17308 | ||
17309 | static void | |
17310 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 17311 | const gdb_byte *info_ptr, |
3019eac3 DE |
17312 | struct die_info *comp_unit_die, |
17313 | int has_children, | |
17314 | void *data) | |
17315 | { | |
17316 | struct dwarf2_cu *cu = reader->cu; | |
17317 | struct dwarf2_read_addr_index_data *aidata = | |
17318 | (struct dwarf2_read_addr_index_data *) data; | |
17319 | ||
17320 | aidata->addr_base = cu->addr_base; | |
17321 | aidata->addr_size = cu->header.addr_size; | |
17322 | } | |
17323 | ||
17324 | /* Given an index in .debug_addr, fetch the value. | |
17325 | NOTE: This can be called during dwarf expression evaluation, | |
17326 | long after the debug information has been read, and thus per_cu->cu | |
17327 | may no longer exist. */ | |
17328 | ||
17329 | CORE_ADDR | |
17330 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
17331 | unsigned int addr_index) | |
17332 | { | |
17333 | struct objfile *objfile = per_cu->objfile; | |
17334 | struct dwarf2_cu *cu = per_cu->cu; | |
17335 | ULONGEST addr_base; | |
17336 | int addr_size; | |
17337 | ||
17338 | /* This is intended to be called from outside this file. */ | |
17339 | dw2_setup (objfile); | |
17340 | ||
17341 | /* We need addr_base and addr_size. | |
17342 | If we don't have PER_CU->cu, we have to get it. | |
17343 | Nasty, but the alternative is storing the needed info in PER_CU, | |
17344 | which at this point doesn't seem justified: it's not clear how frequently | |
17345 | it would get used and it would increase the size of every PER_CU. | |
17346 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
17347 | so we're not in uncharted territory here. | |
17348 | Alas we need to be a bit more complicated as addr_base is contained | |
17349 | in the DIE. | |
17350 | ||
17351 | We don't need to read the entire CU(/TU). | |
17352 | We just need the header and top level die. | |
a1b64ce1 | 17353 | |
3019eac3 | 17354 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 17355 | For now we skip this optimization. */ |
3019eac3 DE |
17356 | |
17357 | if (cu != NULL) | |
17358 | { | |
17359 | addr_base = cu->addr_base; | |
17360 | addr_size = cu->header.addr_size; | |
17361 | } | |
17362 | else | |
17363 | { | |
17364 | struct dwarf2_read_addr_index_data aidata; | |
17365 | ||
a1b64ce1 DE |
17366 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
17367 | we need addr_base. */ | |
17368 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
17369 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
17370 | addr_base = aidata.addr_base; |
17371 | addr_size = aidata.addr_size; | |
17372 | } | |
17373 | ||
17374 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
17375 | } | |
17376 | ||
57d63ce2 DE |
17377 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
17378 | This is only used by the Fission support. */ | |
3019eac3 | 17379 | |
d521ce57 | 17380 | static const char * |
342587c4 | 17381 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 DE |
17382 | { |
17383 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
c5164cbc | 17384 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 17385 | bfd *abfd = objfile->obfd; |
342587c4 | 17386 | struct dwarf2_cu *cu = reader->cu; |
73869dc2 DE |
17387 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
17388 | struct dwarf2_section_info *str_offsets_section = | |
17389 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 17390 | const gdb_byte *info_ptr; |
3019eac3 | 17391 | ULONGEST str_offset; |
57d63ce2 | 17392 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 17393 | |
73869dc2 DE |
17394 | dwarf2_read_section (objfile, str_section); |
17395 | dwarf2_read_section (objfile, str_offsets_section); | |
17396 | if (str_section->buffer == NULL) | |
57d63ce2 | 17397 | error (_("%s used without .debug_str.dwo section" |
9c541725 PA |
17398 | " in CU at offset 0x%x [in module %s]"), |
17399 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 17400 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 17401 | error (_("%s used without .debug_str_offsets.dwo section" |
9c541725 PA |
17402 | " in CU at offset 0x%x [in module %s]"), |
17403 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 17404 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 17405 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9c541725 PA |
17406 | " section in CU at offset 0x%x [in module %s]"), |
17407 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 17408 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
17409 | + str_index * cu->header.offset_size); |
17410 | if (cu->header.offset_size == 4) | |
17411 | str_offset = bfd_get_32 (abfd, info_ptr); | |
17412 | else | |
17413 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 17414 | if (str_offset >= str_section->size) |
57d63ce2 | 17415 | error (_("Offset from %s pointing outside of" |
9c541725 PA |
17416 | " .debug_str.dwo section in CU at offset 0x%x [in module %s]"), |
17417 | form_name, to_underlying (cu->header.sect_off), objf_name); | |
73869dc2 | 17418 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
17419 | } |
17420 | ||
3019eac3 DE |
17421 | /* Return the length of an LEB128 number in BUF. */ |
17422 | ||
17423 | static int | |
17424 | leb128_size (const gdb_byte *buf) | |
17425 | { | |
17426 | const gdb_byte *begin = buf; | |
17427 | gdb_byte byte; | |
17428 | ||
17429 | while (1) | |
17430 | { | |
17431 | byte = *buf++; | |
17432 | if ((byte & 128) == 0) | |
17433 | return buf - begin; | |
17434 | } | |
17435 | } | |
17436 | ||
c906108c | 17437 | static void |
e142c38c | 17438 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
17439 | { |
17440 | switch (lang) | |
17441 | { | |
17442 | case DW_LANG_C89: | |
76bee0cc | 17443 | case DW_LANG_C99: |
0cfd832f | 17444 | case DW_LANG_C11: |
c906108c | 17445 | case DW_LANG_C: |
d1be3247 | 17446 | case DW_LANG_UPC: |
e142c38c | 17447 | cu->language = language_c; |
c906108c | 17448 | break; |
9c37b5ae | 17449 | case DW_LANG_Java: |
c906108c | 17450 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
17451 | case DW_LANG_C_plus_plus_11: |
17452 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 17453 | cu->language = language_cplus; |
c906108c | 17454 | break; |
6aecb9c2 JB |
17455 | case DW_LANG_D: |
17456 | cu->language = language_d; | |
17457 | break; | |
c906108c SS |
17458 | case DW_LANG_Fortran77: |
17459 | case DW_LANG_Fortran90: | |
b21b22e0 | 17460 | case DW_LANG_Fortran95: |
f7de9aab MW |
17461 | case DW_LANG_Fortran03: |
17462 | case DW_LANG_Fortran08: | |
e142c38c | 17463 | cu->language = language_fortran; |
c906108c | 17464 | break; |
a766d390 DE |
17465 | case DW_LANG_Go: |
17466 | cu->language = language_go; | |
17467 | break; | |
c906108c | 17468 | case DW_LANG_Mips_Assembler: |
e142c38c | 17469 | cu->language = language_asm; |
c906108c SS |
17470 | break; |
17471 | case DW_LANG_Ada83: | |
8aaf0b47 | 17472 | case DW_LANG_Ada95: |
bc5f45f8 JB |
17473 | cu->language = language_ada; |
17474 | break; | |
72019c9c GM |
17475 | case DW_LANG_Modula2: |
17476 | cu->language = language_m2; | |
17477 | break; | |
fe8e67fd PM |
17478 | case DW_LANG_Pascal83: |
17479 | cu->language = language_pascal; | |
17480 | break; | |
22566fbd DJ |
17481 | case DW_LANG_ObjC: |
17482 | cu->language = language_objc; | |
17483 | break; | |
c44af4eb TT |
17484 | case DW_LANG_Rust: |
17485 | case DW_LANG_Rust_old: | |
17486 | cu->language = language_rust; | |
17487 | break; | |
c906108c SS |
17488 | case DW_LANG_Cobol74: |
17489 | case DW_LANG_Cobol85: | |
c906108c | 17490 | default: |
e142c38c | 17491 | cu->language = language_minimal; |
c906108c SS |
17492 | break; |
17493 | } | |
e142c38c | 17494 | cu->language_defn = language_def (cu->language); |
c906108c SS |
17495 | } |
17496 | ||
17497 | /* Return the named attribute or NULL if not there. */ | |
17498 | ||
17499 | static struct attribute * | |
e142c38c | 17500 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 17501 | { |
a48e046c | 17502 | for (;;) |
c906108c | 17503 | { |
a48e046c TT |
17504 | unsigned int i; |
17505 | struct attribute *spec = NULL; | |
17506 | ||
17507 | for (i = 0; i < die->num_attrs; ++i) | |
17508 | { | |
17509 | if (die->attrs[i].name == name) | |
17510 | return &die->attrs[i]; | |
17511 | if (die->attrs[i].name == DW_AT_specification | |
17512 | || die->attrs[i].name == DW_AT_abstract_origin) | |
17513 | spec = &die->attrs[i]; | |
17514 | } | |
17515 | ||
17516 | if (!spec) | |
17517 | break; | |
c906108c | 17518 | |
f2f0e013 | 17519 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 17520 | } |
c5aa993b | 17521 | |
c906108c SS |
17522 | return NULL; |
17523 | } | |
17524 | ||
348e048f DE |
17525 | /* Return the named attribute or NULL if not there, |
17526 | but do not follow DW_AT_specification, etc. | |
17527 | This is for use in contexts where we're reading .debug_types dies. | |
17528 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
17529 | back up the chain, and we want to go down. */ | |
17530 | ||
17531 | static struct attribute * | |
45e58e77 | 17532 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
17533 | { |
17534 | unsigned int i; | |
17535 | ||
17536 | for (i = 0; i < die->num_attrs; ++i) | |
17537 | if (die->attrs[i].name == name) | |
17538 | return &die->attrs[i]; | |
17539 | ||
17540 | return NULL; | |
17541 | } | |
17542 | ||
7d45c7c3 KB |
17543 | /* Return the string associated with a string-typed attribute, or NULL if it |
17544 | is either not found or is of an incorrect type. */ | |
17545 | ||
17546 | static const char * | |
17547 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
17548 | { | |
17549 | struct attribute *attr; | |
17550 | const char *str = NULL; | |
17551 | ||
17552 | attr = dwarf2_attr (die, name, cu); | |
17553 | ||
17554 | if (attr != NULL) | |
17555 | { | |
43988095 JK |
17556 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
17557 | || attr->form == DW_FORM_string || attr->form == DW_FORM_GNU_strp_alt) | |
7d45c7c3 KB |
17558 | str = DW_STRING (attr); |
17559 | else | |
17560 | complaint (&symfile_complaints, | |
17561 | _("string type expected for attribute %s for " | |
17562 | "DIE at 0x%x in module %s"), | |
9c541725 | 17563 | dwarf_attr_name (name), to_underlying (die->sect_off), |
7d45c7c3 KB |
17564 | objfile_name (cu->objfile)); |
17565 | } | |
17566 | ||
17567 | return str; | |
17568 | } | |
17569 | ||
05cf31d1 JB |
17570 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
17571 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 17572 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
17573 | |
17574 | static int | |
17575 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
17576 | { | |
17577 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
17578 | ||
17579 | return (attr && DW_UNSND (attr)); | |
17580 | } | |
17581 | ||
3ca72b44 | 17582 | static int |
e142c38c | 17583 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 17584 | { |
05cf31d1 JB |
17585 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
17586 | which value is non-zero. However, we have to be careful with | |
17587 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
17588 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
17589 | end up accidently finding a declaration attribute that belongs | |
17590 | to a different DIE referenced by the specification attribute, | |
17591 | even though the given DIE does not have a declaration attribute. */ | |
17592 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
17593 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
17594 | } |
17595 | ||
63d06c5c | 17596 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 17597 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
17598 | containing the return value on output. If there is no |
17599 | specification, but there is an abstract origin, that is | |
17600 | returned. */ | |
63d06c5c DC |
17601 | |
17602 | static struct die_info * | |
f2f0e013 | 17603 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 17604 | { |
f2f0e013 DJ |
17605 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
17606 | *spec_cu); | |
63d06c5c | 17607 | |
edb3359d DJ |
17608 | if (spec_attr == NULL) |
17609 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
17610 | ||
63d06c5c DC |
17611 | if (spec_attr == NULL) |
17612 | return NULL; | |
17613 | else | |
f2f0e013 | 17614 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 17615 | } |
c906108c | 17616 | |
527f3840 JK |
17617 | /* Stub for free_line_header to match void * callback types. */ |
17618 | ||
17619 | static void | |
17620 | free_line_header_voidp (void *arg) | |
17621 | { | |
9a3c8263 | 17622 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 17623 | |
fff8551c | 17624 | delete lh; |
527f3840 JK |
17625 | } |
17626 | ||
fff8551c PA |
17627 | void |
17628 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 17629 | { |
27e0867f | 17630 | if (dwarf_line_debug >= 2) |
fff8551c PA |
17631 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
17632 | include_dirs.size () + 1, include_dir); | |
27e0867f | 17633 | |
fff8551c | 17634 | include_dirs.push_back (include_dir); |
debd256d | 17635 | } |
6e70227d | 17636 | |
fff8551c PA |
17637 | void |
17638 | line_header::add_file_name (const char *name, | |
ecfb656c | 17639 | dir_index d_index, |
fff8551c PA |
17640 | unsigned int mod_time, |
17641 | unsigned int length) | |
debd256d | 17642 | { |
27e0867f DE |
17643 | if (dwarf_line_debug >= 2) |
17644 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 17645 | (unsigned) file_names.size () + 1, name); |
27e0867f | 17646 | |
ecfb656c | 17647 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 17648 | } |
6e70227d | 17649 | |
83769d0b | 17650 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
17651 | |
17652 | static struct dwarf2_section_info * | |
17653 | get_debug_line_section (struct dwarf2_cu *cu) | |
17654 | { | |
17655 | struct dwarf2_section_info *section; | |
17656 | ||
17657 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
17658 | DWO file. */ | |
17659 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
17660 | section = &cu->dwo_unit->dwo_file->sections.line; | |
17661 | else if (cu->per_cu->is_dwz) | |
17662 | { | |
17663 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
17664 | ||
17665 | section = &dwz->line; | |
17666 | } | |
17667 | else | |
17668 | section = &dwarf2_per_objfile->line; | |
17669 | ||
17670 | return section; | |
17671 | } | |
17672 | ||
43988095 JK |
17673 | /* Read directory or file name entry format, starting with byte of |
17674 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
17675 | entries count and the entries themselves in the described entry | |
17676 | format. */ | |
17677 | ||
17678 | static void | |
17679 | read_formatted_entries (bfd *abfd, const gdb_byte **bufp, | |
17680 | struct line_header *lh, | |
17681 | const struct comp_unit_head *cu_header, | |
17682 | void (*callback) (struct line_header *lh, | |
17683 | const char *name, | |
ecfb656c | 17684 | dir_index d_index, |
43988095 JK |
17685 | unsigned int mod_time, |
17686 | unsigned int length)) | |
17687 | { | |
17688 | gdb_byte format_count, formati; | |
17689 | ULONGEST data_count, datai; | |
17690 | const gdb_byte *buf = *bufp; | |
17691 | const gdb_byte *format_header_data; | |
17692 | int i; | |
17693 | unsigned int bytes_read; | |
17694 | ||
17695 | format_count = read_1_byte (abfd, buf); | |
17696 | buf += 1; | |
17697 | format_header_data = buf; | |
17698 | for (formati = 0; formati < format_count; formati++) | |
17699 | { | |
17700 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
17701 | buf += bytes_read; | |
17702 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
17703 | buf += bytes_read; | |
17704 | } | |
17705 | ||
17706 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
17707 | buf += bytes_read; | |
17708 | for (datai = 0; datai < data_count; datai++) | |
17709 | { | |
17710 | const gdb_byte *format = format_header_data; | |
17711 | struct file_entry fe; | |
17712 | ||
43988095 JK |
17713 | for (formati = 0; formati < format_count; formati++) |
17714 | { | |
ecfb656c | 17715 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 17716 | format += bytes_read; |
43988095 | 17717 | |
ecfb656c | 17718 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 17719 | format += bytes_read; |
ecfb656c PA |
17720 | |
17721 | gdb::optional<const char *> string; | |
17722 | gdb::optional<unsigned int> uint; | |
17723 | ||
43988095 JK |
17724 | switch (form) |
17725 | { | |
17726 | case DW_FORM_string: | |
ecfb656c | 17727 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
17728 | buf += bytes_read; |
17729 | break; | |
17730 | ||
17731 | case DW_FORM_line_strp: | |
ecfb656c PA |
17732 | string.emplace (read_indirect_line_string (abfd, buf, |
17733 | cu_header, | |
17734 | &bytes_read)); | |
43988095 JK |
17735 | buf += bytes_read; |
17736 | break; | |
17737 | ||
17738 | case DW_FORM_data1: | |
ecfb656c | 17739 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
17740 | buf += 1; |
17741 | break; | |
17742 | ||
17743 | case DW_FORM_data2: | |
ecfb656c | 17744 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
17745 | buf += 2; |
17746 | break; | |
17747 | ||
17748 | case DW_FORM_data4: | |
ecfb656c | 17749 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
17750 | buf += 4; |
17751 | break; | |
17752 | ||
17753 | case DW_FORM_data8: | |
ecfb656c | 17754 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
17755 | buf += 8; |
17756 | break; | |
17757 | ||
17758 | case DW_FORM_udata: | |
ecfb656c | 17759 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
17760 | buf += bytes_read; |
17761 | break; | |
17762 | ||
17763 | case DW_FORM_block: | |
17764 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
17765 | current GDB. */ | |
17766 | break; | |
17767 | } | |
ecfb656c PA |
17768 | |
17769 | switch (content_type) | |
17770 | { | |
17771 | case DW_LNCT_path: | |
17772 | if (string.has_value ()) | |
17773 | fe.name = *string; | |
17774 | break; | |
17775 | case DW_LNCT_directory_index: | |
17776 | if (uint.has_value ()) | |
17777 | fe.d_index = (dir_index) *uint; | |
17778 | break; | |
17779 | case DW_LNCT_timestamp: | |
17780 | if (uint.has_value ()) | |
17781 | fe.mod_time = *uint; | |
17782 | break; | |
17783 | case DW_LNCT_size: | |
17784 | if (uint.has_value ()) | |
17785 | fe.length = *uint; | |
17786 | break; | |
17787 | case DW_LNCT_MD5: | |
17788 | break; | |
17789 | default: | |
17790 | complaint (&symfile_complaints, | |
17791 | _("Unknown format content type %s"), | |
17792 | pulongest (content_type)); | |
17793 | } | |
43988095 JK |
17794 | } |
17795 | ||
ecfb656c | 17796 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
17797 | } |
17798 | ||
17799 | *bufp = buf; | |
17800 | } | |
17801 | ||
debd256d | 17802 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 17803 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 17804 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
17805 | Returns NULL if there is a problem reading the header, e.g., if it |
17806 | has a version we don't understand. | |
debd256d JB |
17807 | |
17808 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
17809 | the returned object point into the dwarf line section buffer, |
17810 | and must not be freed. */ | |
ae2de4f8 | 17811 | |
fff8551c | 17812 | static line_header_up |
9c541725 | 17813 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 17814 | { |
d521ce57 | 17815 | const gdb_byte *line_ptr; |
c764a876 | 17816 | unsigned int bytes_read, offset_size; |
debd256d | 17817 | int i; |
d521ce57 | 17818 | const char *cur_dir, *cur_file; |
3019eac3 DE |
17819 | struct dwarf2_section_info *section; |
17820 | bfd *abfd; | |
17821 | ||
36586728 | 17822 | section = get_debug_line_section (cu); |
3019eac3 DE |
17823 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
17824 | if (section->buffer == NULL) | |
debd256d | 17825 | { |
3019eac3 DE |
17826 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
17827 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
17828 | else | |
17829 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
17830 | return 0; |
17831 | } | |
17832 | ||
fceca515 DE |
17833 | /* We can't do this until we know the section is non-empty. |
17834 | Only then do we know we have such a section. */ | |
a32a8923 | 17835 | abfd = get_section_bfd_owner (section); |
fceca515 | 17836 | |
a738430d MK |
17837 | /* Make sure that at least there's room for the total_length field. |
17838 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 17839 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 17840 | { |
4d3c2250 | 17841 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
17842 | return 0; |
17843 | } | |
17844 | ||
fff8551c | 17845 | line_header_up lh (new line_header ()); |
debd256d | 17846 | |
9c541725 | 17847 | lh->sect_off = sect_off; |
527f3840 JK |
17848 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
17849 | ||
9c541725 | 17850 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 17851 | |
a738430d | 17852 | /* Read in the header. */ |
6e70227d | 17853 | lh->total_length = |
c764a876 DE |
17854 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
17855 | &bytes_read, &offset_size); | |
debd256d | 17856 | line_ptr += bytes_read; |
3019eac3 | 17857 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 17858 | { |
4d3c2250 | 17859 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
17860 | return 0; |
17861 | } | |
17862 | lh->statement_program_end = line_ptr + lh->total_length; | |
17863 | lh->version = read_2_bytes (abfd, line_ptr); | |
17864 | line_ptr += 2; | |
43988095 | 17865 | if (lh->version > 5) |
cd366ee8 DE |
17866 | { |
17867 | /* This is a version we don't understand. The format could have | |
17868 | changed in ways we don't handle properly so just punt. */ | |
17869 | complaint (&symfile_complaints, | |
17870 | _("unsupported version in .debug_line section")); | |
17871 | return NULL; | |
17872 | } | |
43988095 JK |
17873 | if (lh->version >= 5) |
17874 | { | |
17875 | gdb_byte segment_selector_size; | |
17876 | ||
17877 | /* Skip address size. */ | |
17878 | read_1_byte (abfd, line_ptr); | |
17879 | line_ptr += 1; | |
17880 | ||
17881 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
17882 | line_ptr += 1; | |
17883 | if (segment_selector_size != 0) | |
17884 | { | |
17885 | complaint (&symfile_complaints, | |
17886 | _("unsupported segment selector size %u " | |
17887 | "in .debug_line section"), | |
17888 | segment_selector_size); | |
17889 | return NULL; | |
17890 | } | |
17891 | } | |
c764a876 DE |
17892 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
17893 | line_ptr += offset_size; | |
debd256d JB |
17894 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
17895 | line_ptr += 1; | |
2dc7f7b3 TT |
17896 | if (lh->version >= 4) |
17897 | { | |
17898 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
17899 | line_ptr += 1; | |
17900 | } | |
17901 | else | |
17902 | lh->maximum_ops_per_instruction = 1; | |
17903 | ||
17904 | if (lh->maximum_ops_per_instruction == 0) | |
17905 | { | |
17906 | lh->maximum_ops_per_instruction = 1; | |
17907 | complaint (&symfile_complaints, | |
3e43a32a MS |
17908 | _("invalid maximum_ops_per_instruction " |
17909 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
17910 | } |
17911 | ||
debd256d JB |
17912 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
17913 | line_ptr += 1; | |
17914 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
17915 | line_ptr += 1; | |
17916 | lh->line_range = read_1_byte (abfd, line_ptr); | |
17917 | line_ptr += 1; | |
17918 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
17919 | line_ptr += 1; | |
fff8551c | 17920 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
17921 | |
17922 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
17923 | for (i = 1; i < lh->opcode_base; ++i) | |
17924 | { | |
17925 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
17926 | line_ptr += 1; | |
17927 | } | |
17928 | ||
43988095 | 17929 | if (lh->version >= 5) |
debd256d | 17930 | { |
43988095 | 17931 | /* Read directory table. */ |
fff8551c PA |
17932 | read_formatted_entries (abfd, &line_ptr, lh.get (), &cu->header, |
17933 | [] (struct line_header *lh, const char *name, | |
ecfb656c | 17934 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
17935 | unsigned int length) |
17936 | { | |
17937 | lh->add_include_dir (name); | |
17938 | }); | |
debd256d | 17939 | |
43988095 | 17940 | /* Read file name table. */ |
fff8551c PA |
17941 | read_formatted_entries (abfd, &line_ptr, lh.get (), &cu->header, |
17942 | [] (struct line_header *lh, const char *name, | |
ecfb656c | 17943 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
17944 | unsigned int length) |
17945 | { | |
ecfb656c | 17946 | lh->add_file_name (name, d_index, mod_time, length); |
fff8551c | 17947 | }); |
43988095 JK |
17948 | } |
17949 | else | |
debd256d | 17950 | { |
43988095 JK |
17951 | /* Read directory table. */ |
17952 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
17953 | { | |
17954 | line_ptr += bytes_read; | |
fff8551c | 17955 | lh->add_include_dir (cur_dir); |
43988095 | 17956 | } |
debd256d JB |
17957 | line_ptr += bytes_read; |
17958 | ||
43988095 JK |
17959 | /* Read file name table. */ |
17960 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
17961 | { | |
ecfb656c PA |
17962 | unsigned int mod_time, length; |
17963 | dir_index d_index; | |
43988095 JK |
17964 | |
17965 | line_ptr += bytes_read; | |
ecfb656c | 17966 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
17967 | line_ptr += bytes_read; |
17968 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17969 | line_ptr += bytes_read; | |
17970 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17971 | line_ptr += bytes_read; | |
17972 | ||
ecfb656c | 17973 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
17974 | } |
17975 | line_ptr += bytes_read; | |
debd256d | 17976 | } |
6e70227d | 17977 | lh->statement_program_start = line_ptr; |
debd256d | 17978 | |
3019eac3 | 17979 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 17980 | complaint (&symfile_complaints, |
3e43a32a MS |
17981 | _("line number info header doesn't " |
17982 | "fit in `.debug_line' section")); | |
debd256d | 17983 | |
debd256d JB |
17984 | return lh; |
17985 | } | |
c906108c | 17986 | |
c6da4cef DE |
17987 | /* Subroutine of dwarf_decode_lines to simplify it. |
17988 | Return the file name of the psymtab for included file FILE_INDEX | |
17989 | in line header LH of PST. | |
17990 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17991 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
17992 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
17993 | ||
17994 | The function creates dangling cleanup registration. */ | |
c6da4cef | 17995 | |
d521ce57 | 17996 | static const char * |
c6da4cef DE |
17997 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
17998 | const struct partial_symtab *pst, | |
17999 | const char *comp_dir) | |
18000 | { | |
8c43009f | 18001 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
18002 | const char *include_name = fe.name; |
18003 | const char *include_name_to_compare = include_name; | |
72b9f47f TT |
18004 | const char *pst_filename; |
18005 | char *copied_name = NULL; | |
c6da4cef DE |
18006 | int file_is_pst; |
18007 | ||
8c43009f | 18008 | const char *dir_name = fe.include_dir (lh); |
c6da4cef DE |
18009 | |
18010 | if (!IS_ABSOLUTE_PATH (include_name) | |
18011 | && (dir_name != NULL || comp_dir != NULL)) | |
18012 | { | |
18013 | /* Avoid creating a duplicate psymtab for PST. | |
18014 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
18015 | Before we do the comparison, however, we need to account | |
18016 | for DIR_NAME and COMP_DIR. | |
18017 | First prepend dir_name (if non-NULL). If we still don't | |
18018 | have an absolute path prepend comp_dir (if non-NULL). | |
18019 | However, the directory we record in the include-file's | |
18020 | psymtab does not contain COMP_DIR (to match the | |
18021 | corresponding symtab(s)). | |
18022 | ||
18023 | Example: | |
18024 | ||
18025 | bash$ cd /tmp | |
18026 | bash$ gcc -g ./hello.c | |
18027 | include_name = "hello.c" | |
18028 | dir_name = "." | |
18029 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
18030 | DW_AT_name = "./hello.c" |
18031 | ||
18032 | */ | |
c6da4cef DE |
18033 | |
18034 | if (dir_name != NULL) | |
18035 | { | |
d521ce57 TT |
18036 | char *tem = concat (dir_name, SLASH_STRING, |
18037 | include_name, (char *)NULL); | |
18038 | ||
18039 | make_cleanup (xfree, tem); | |
18040 | include_name = tem; | |
c6da4cef | 18041 | include_name_to_compare = include_name; |
c6da4cef DE |
18042 | } |
18043 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
18044 | { | |
d521ce57 TT |
18045 | char *tem = concat (comp_dir, SLASH_STRING, |
18046 | include_name, (char *)NULL); | |
18047 | ||
18048 | make_cleanup (xfree, tem); | |
18049 | include_name_to_compare = tem; | |
c6da4cef DE |
18050 | } |
18051 | } | |
18052 | ||
18053 | pst_filename = pst->filename; | |
18054 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
18055 | { | |
72b9f47f TT |
18056 | copied_name = concat (pst->dirname, SLASH_STRING, |
18057 | pst_filename, (char *)NULL); | |
18058 | pst_filename = copied_name; | |
c6da4cef DE |
18059 | } |
18060 | ||
1e3fad37 | 18061 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 18062 | |
72b9f47f TT |
18063 | if (copied_name != NULL) |
18064 | xfree (copied_name); | |
c6da4cef DE |
18065 | |
18066 | if (file_is_pst) | |
18067 | return NULL; | |
18068 | return include_name; | |
18069 | } | |
18070 | ||
d9b3de22 DE |
18071 | /* State machine to track the state of the line number program. */ |
18072 | ||
6f77053d | 18073 | class lnp_state_machine |
d9b3de22 | 18074 | { |
6f77053d PA |
18075 | public: |
18076 | /* Initialize a machine state for the start of a line number | |
18077 | program. */ | |
18078 | lnp_state_machine (gdbarch *arch, line_header *lh, bool record_lines_p); | |
18079 | ||
8c43009f PA |
18080 | file_entry *current_file () |
18081 | { | |
18082 | /* lh->file_names is 0-based, but the file name numbers in the | |
18083 | statement program are 1-based. */ | |
6f77053d PA |
18084 | return m_line_header->file_name_at (m_file); |
18085 | } | |
18086 | ||
18087 | /* Record the line in the state machine. END_SEQUENCE is true if | |
18088 | we're processing the end of a sequence. */ | |
18089 | void record_line (bool end_sequence); | |
18090 | ||
18091 | /* Check address and if invalid nop-out the rest of the lines in this | |
18092 | sequence. */ | |
18093 | void check_line_address (struct dwarf2_cu *cu, | |
18094 | const gdb_byte *line_ptr, | |
18095 | CORE_ADDR lowpc, CORE_ADDR address); | |
18096 | ||
18097 | void handle_set_discriminator (unsigned int discriminator) | |
18098 | { | |
18099 | m_discriminator = discriminator; | |
18100 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
18101 | } | |
18102 | ||
18103 | /* Handle DW_LNE_set_address. */ | |
18104 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
18105 | { | |
18106 | m_op_index = 0; | |
18107 | address += baseaddr; | |
18108 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
18109 | } | |
18110 | ||
18111 | /* Handle DW_LNS_advance_pc. */ | |
18112 | void handle_advance_pc (CORE_ADDR adjust); | |
18113 | ||
18114 | /* Handle a special opcode. */ | |
18115 | void handle_special_opcode (unsigned char op_code); | |
18116 | ||
18117 | /* Handle DW_LNS_advance_line. */ | |
18118 | void handle_advance_line (int line_delta) | |
18119 | { | |
18120 | advance_line (line_delta); | |
18121 | } | |
18122 | ||
18123 | /* Handle DW_LNS_set_file. */ | |
18124 | void handle_set_file (file_name_index file); | |
18125 | ||
18126 | /* Handle DW_LNS_negate_stmt. */ | |
18127 | void handle_negate_stmt () | |
18128 | { | |
18129 | m_is_stmt = !m_is_stmt; | |
18130 | } | |
18131 | ||
18132 | /* Handle DW_LNS_const_add_pc. */ | |
18133 | void handle_const_add_pc (); | |
18134 | ||
18135 | /* Handle DW_LNS_fixed_advance_pc. */ | |
18136 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
18137 | { | |
18138 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
18139 | m_op_index = 0; | |
18140 | } | |
18141 | ||
18142 | /* Handle DW_LNS_copy. */ | |
18143 | void handle_copy () | |
18144 | { | |
18145 | record_line (false); | |
18146 | m_discriminator = 0; | |
18147 | } | |
18148 | ||
18149 | /* Handle DW_LNE_end_sequence. */ | |
18150 | void handle_end_sequence () | |
18151 | { | |
18152 | m_record_line_callback = ::record_line; | |
18153 | } | |
18154 | ||
18155 | private: | |
18156 | /* Advance the line by LINE_DELTA. */ | |
18157 | void advance_line (int line_delta) | |
18158 | { | |
18159 | m_line += line_delta; | |
18160 | ||
18161 | if (line_delta != 0) | |
18162 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
18163 | } |
18164 | ||
6f77053d PA |
18165 | gdbarch *m_gdbarch; |
18166 | ||
18167 | /* True if we're recording lines. | |
18168 | Otherwise we're building partial symtabs and are just interested in | |
18169 | finding include files mentioned by the line number program. */ | |
18170 | bool m_record_lines_p; | |
18171 | ||
8c43009f | 18172 | /* The line number header. */ |
6f77053d | 18173 | line_header *m_line_header; |
8c43009f | 18174 | |
6f77053d PA |
18175 | /* These are part of the standard DWARF line number state machine, |
18176 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 18177 | |
6f77053d | 18178 | unsigned char m_op_index = 0; |
8c43009f | 18179 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
18180 | file_name_index m_file = (file_name_index) 1; |
18181 | unsigned int m_line = 1; | |
18182 | ||
18183 | /* These are initialized in the constructor. */ | |
18184 | ||
18185 | CORE_ADDR m_address; | |
18186 | bool m_is_stmt; | |
18187 | unsigned int m_discriminator; | |
d9b3de22 DE |
18188 | |
18189 | /* Additional bits of state we need to track. */ | |
18190 | ||
18191 | /* The last file that we called dwarf2_start_subfile for. | |
18192 | This is only used for TLLs. */ | |
6f77053d | 18193 | unsigned int m_last_file = 0; |
d9b3de22 | 18194 | /* The last file a line number was recorded for. */ |
6f77053d | 18195 | struct subfile *m_last_subfile = NULL; |
d9b3de22 DE |
18196 | |
18197 | /* The function to call to record a line. */ | |
6f77053d | 18198 | record_line_ftype *m_record_line_callback = NULL; |
d9b3de22 DE |
18199 | |
18200 | /* The last line number that was recorded, used to coalesce | |
18201 | consecutive entries for the same line. This can happen, for | |
18202 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
18203 | unsigned int m_last_line = 0; |
18204 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 18205 | }; |
d9b3de22 | 18206 | |
6f77053d PA |
18207 | void |
18208 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
18209 | { | |
18210 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
18211 | / m_line_header->maximum_ops_per_instruction) | |
18212 | * m_line_header->minimum_instruction_length); | |
18213 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
18214 | m_op_index = ((m_op_index + adjust) | |
18215 | % m_line_header->maximum_ops_per_instruction); | |
18216 | } | |
d9b3de22 | 18217 | |
6f77053d PA |
18218 | void |
18219 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 18220 | { |
6f77053d PA |
18221 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
18222 | CORE_ADDR addr_adj = (((m_op_index | |
18223 | + (adj_opcode / m_line_header->line_range)) | |
18224 | / m_line_header->maximum_ops_per_instruction) | |
18225 | * m_line_header->minimum_instruction_length); | |
18226 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
18227 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
18228 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 18229 | |
6f77053d PA |
18230 | int line_delta = (m_line_header->line_base |
18231 | + (adj_opcode % m_line_header->line_range)); | |
18232 | advance_line (line_delta); | |
18233 | record_line (false); | |
18234 | m_discriminator = 0; | |
18235 | } | |
d9b3de22 | 18236 | |
6f77053d PA |
18237 | void |
18238 | lnp_state_machine::handle_set_file (file_name_index file) | |
18239 | { | |
18240 | m_file = file; | |
18241 | ||
18242 | const file_entry *fe = current_file (); | |
18243 | if (fe == NULL) | |
18244 | dwarf2_debug_line_missing_file_complaint (); | |
18245 | else if (m_record_lines_p) | |
18246 | { | |
18247 | const char *dir = fe->include_dir (m_line_header); | |
18248 | ||
18249 | m_last_subfile = current_subfile; | |
18250 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
18251 | dwarf2_start_subfile (fe->name, dir); | |
18252 | } | |
18253 | } | |
18254 | ||
18255 | void | |
18256 | lnp_state_machine::handle_const_add_pc () | |
18257 | { | |
18258 | CORE_ADDR adjust | |
18259 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
18260 | ||
18261 | CORE_ADDR addr_adj | |
18262 | = (((m_op_index + adjust) | |
18263 | / m_line_header->maximum_ops_per_instruction) | |
18264 | * m_line_header->minimum_instruction_length); | |
18265 | ||
18266 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
18267 | m_op_index = ((m_op_index + adjust) | |
18268 | % m_line_header->maximum_ops_per_instruction); | |
18269 | } | |
d9b3de22 | 18270 | |
c91513d8 PP |
18271 | /* Ignore this record_line request. */ |
18272 | ||
18273 | static void | |
18274 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
18275 | { | |
18276 | return; | |
18277 | } | |
18278 | ||
a05a36a5 DE |
18279 | /* Return non-zero if we should add LINE to the line number table. |
18280 | LINE is the line to add, LAST_LINE is the last line that was added, | |
18281 | LAST_SUBFILE is the subfile for LAST_LINE. | |
18282 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
18283 | had a non-zero discriminator. | |
18284 | ||
18285 | We have to be careful in the presence of discriminators. | |
18286 | E.g., for this line: | |
18287 | ||
18288 | for (i = 0; i < 100000; i++); | |
18289 | ||
18290 | clang can emit four line number entries for that one line, | |
18291 | each with a different discriminator. | |
18292 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
18293 | ||
18294 | However, we want gdb to coalesce all four entries into one. | |
18295 | Otherwise the user could stepi into the middle of the line and | |
18296 | gdb would get confused about whether the pc really was in the | |
18297 | middle of the line. | |
18298 | ||
18299 | Things are further complicated by the fact that two consecutive | |
18300 | line number entries for the same line is a heuristic used by gcc | |
18301 | to denote the end of the prologue. So we can't just discard duplicate | |
18302 | entries, we have to be selective about it. The heuristic we use is | |
18303 | that we only collapse consecutive entries for the same line if at least | |
18304 | one of those entries has a non-zero discriminator. PR 17276. | |
18305 | ||
18306 | Note: Addresses in the line number state machine can never go backwards | |
18307 | within one sequence, thus this coalescing is ok. */ | |
18308 | ||
18309 | static int | |
18310 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
18311 | int line_has_non_zero_discriminator, | |
18312 | struct subfile *last_subfile) | |
18313 | { | |
18314 | if (current_subfile != last_subfile) | |
18315 | return 1; | |
18316 | if (line != last_line) | |
18317 | return 1; | |
18318 | /* Same line for the same file that we've seen already. | |
18319 | As a last check, for pr 17276, only record the line if the line | |
18320 | has never had a non-zero discriminator. */ | |
18321 | if (!line_has_non_zero_discriminator) | |
18322 | return 1; | |
18323 | return 0; | |
18324 | } | |
18325 | ||
252a6764 DE |
18326 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
18327 | in the line table of subfile SUBFILE. */ | |
18328 | ||
18329 | static void | |
d9b3de22 DE |
18330 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
18331 | unsigned int line, CORE_ADDR address, | |
18332 | record_line_ftype p_record_line) | |
252a6764 DE |
18333 | { |
18334 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
18335 | ||
27e0867f DE |
18336 | if (dwarf_line_debug) |
18337 | { | |
18338 | fprintf_unfiltered (gdb_stdlog, | |
18339 | "Recording line %u, file %s, address %s\n", | |
18340 | line, lbasename (subfile->name), | |
18341 | paddress (gdbarch, address)); | |
18342 | } | |
18343 | ||
d5962de5 | 18344 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
18345 | } |
18346 | ||
18347 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
18348 | Mark the end of a set of line number records. | |
d9b3de22 | 18349 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
18350 | If SUBFILE is NULL the request is ignored. */ |
18351 | ||
18352 | static void | |
18353 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
18354 | CORE_ADDR address, record_line_ftype p_record_line) | |
18355 | { | |
27e0867f DE |
18356 | if (subfile == NULL) |
18357 | return; | |
18358 | ||
18359 | if (dwarf_line_debug) | |
18360 | { | |
18361 | fprintf_unfiltered (gdb_stdlog, | |
18362 | "Finishing current line, file %s, address %s\n", | |
18363 | lbasename (subfile->name), | |
18364 | paddress (gdbarch, address)); | |
18365 | } | |
18366 | ||
d9b3de22 DE |
18367 | dwarf_record_line_1 (gdbarch, subfile, 0, address, p_record_line); |
18368 | } | |
18369 | ||
6f77053d PA |
18370 | void |
18371 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 18372 | { |
d9b3de22 DE |
18373 | if (dwarf_line_debug) |
18374 | { | |
18375 | fprintf_unfiltered (gdb_stdlog, | |
18376 | "Processing actual line %u: file %u," | |
18377 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
18378 | m_line, to_underlying (m_file), |
18379 | paddress (m_gdbarch, m_address), | |
18380 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
18381 | } |
18382 | ||
6f77053d | 18383 | file_entry *fe = current_file (); |
8c43009f PA |
18384 | |
18385 | if (fe == NULL) | |
d9b3de22 DE |
18386 | dwarf2_debug_line_missing_file_complaint (); |
18387 | /* For now we ignore lines not starting on an instruction boundary. | |
18388 | But not when processing end_sequence for compatibility with the | |
18389 | previous version of the code. */ | |
6f77053d | 18390 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 18391 | { |
8c43009f | 18392 | fe->included_p = 1; |
6f77053d | 18393 | if (m_record_lines_p && m_is_stmt) |
d9b3de22 | 18394 | { |
6f77053d | 18395 | if (m_last_subfile != current_subfile || end_sequence) |
d9b3de22 | 18396 | { |
6f77053d PA |
18397 | dwarf_finish_line (m_gdbarch, m_last_subfile, |
18398 | m_address, m_record_line_callback); | |
d9b3de22 DE |
18399 | } |
18400 | ||
18401 | if (!end_sequence) | |
18402 | { | |
6f77053d PA |
18403 | if (dwarf_record_line_p (m_line, m_last_line, |
18404 | m_line_has_non_zero_discriminator, | |
18405 | m_last_subfile)) | |
d9b3de22 | 18406 | { |
6f77053d PA |
18407 | dwarf_record_line_1 (m_gdbarch, current_subfile, |
18408 | m_line, m_address, | |
18409 | m_record_line_callback); | |
d9b3de22 | 18410 | } |
6f77053d PA |
18411 | m_last_subfile = current_subfile; |
18412 | m_last_line = m_line; | |
d9b3de22 DE |
18413 | } |
18414 | } | |
18415 | } | |
18416 | } | |
18417 | ||
6f77053d PA |
18418 | lnp_state_machine::lnp_state_machine (gdbarch *arch, line_header *lh, |
18419 | bool record_lines_p) | |
d9b3de22 | 18420 | { |
6f77053d PA |
18421 | m_gdbarch = arch; |
18422 | m_record_lines_p = record_lines_p; | |
18423 | m_line_header = lh; | |
d9b3de22 | 18424 | |
6f77053d | 18425 | m_record_line_callback = ::record_line; |
d9b3de22 | 18426 | |
d9b3de22 DE |
18427 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
18428 | was a line entry for it so that the backend has a chance to adjust it | |
18429 | and also record it in case it needs it. This is currently used by MIPS | |
18430 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
18431 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
18432 | m_is_stmt = lh->default_is_stmt; | |
18433 | m_discriminator = 0; | |
252a6764 DE |
18434 | } |
18435 | ||
6f77053d PA |
18436 | void |
18437 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
18438 | const gdb_byte *line_ptr, | |
18439 | CORE_ADDR lowpc, CORE_ADDR address) | |
924c2928 DE |
18440 | { |
18441 | /* If address < lowpc then it's not a usable value, it's outside the | |
18442 | pc range of the CU. However, we restrict the test to only address | |
18443 | values of zero to preserve GDB's previous behaviour which is to | |
18444 | handle the specific case of a function being GC'd by the linker. */ | |
18445 | ||
18446 | if (address == 0 && address < lowpc) | |
18447 | { | |
18448 | /* This line table is for a function which has been | |
18449 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
18450 | ||
18451 | struct objfile *objfile = cu->objfile; | |
18452 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; | |
18453 | ||
18454 | complaint (&symfile_complaints, | |
18455 | _(".debug_line address at offset 0x%lx is 0 [in module %s]"), | |
18456 | line_offset, objfile_name (objfile)); | |
6f77053d PA |
18457 | m_record_line_callback = noop_record_line; |
18458 | /* Note: record_line_callback is left as noop_record_line until | |
18459 | we see DW_LNE_end_sequence. */ | |
924c2928 DE |
18460 | } |
18461 | } | |
18462 | ||
f3f5162e | 18463 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
18464 | Process the line number information in LH. |
18465 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
18466 | program in order to set included_p for every referenced header. */ | |
debd256d | 18467 | |
c906108c | 18468 | static void |
43f3e411 DE |
18469 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
18470 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 18471 | { |
d521ce57 TT |
18472 | const gdb_byte *line_ptr, *extended_end; |
18473 | const gdb_byte *line_end; | |
a8c50c1f | 18474 | unsigned int bytes_read, extended_len; |
699ca60a | 18475 | unsigned char op_code, extended_op; |
e142c38c DJ |
18476 | CORE_ADDR baseaddr; |
18477 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 18478 | bfd *abfd = objfile->obfd; |
fbf65064 | 18479 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
18480 | /* True if we're recording line info (as opposed to building partial |
18481 | symtabs and just interested in finding include files mentioned by | |
18482 | the line number program). */ | |
18483 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
18484 | |
18485 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 18486 | |
debd256d JB |
18487 | line_ptr = lh->statement_program_start; |
18488 | line_end = lh->statement_program_end; | |
c906108c SS |
18489 | |
18490 | /* Read the statement sequences until there's nothing left. */ | |
18491 | while (line_ptr < line_end) | |
18492 | { | |
6f77053d PA |
18493 | /* The DWARF line number program state machine. Reset the state |
18494 | machine at the start of each sequence. */ | |
18495 | lnp_state_machine state_machine (gdbarch, lh, record_lines_p); | |
18496 | bool end_sequence = false; | |
d9b3de22 | 18497 | |
8c43009f | 18498 | if (record_lines_p) |
c906108c | 18499 | { |
8c43009f PA |
18500 | /* Start a subfile for the current file of the state |
18501 | machine. */ | |
18502 | const file_entry *fe = state_machine.current_file (); | |
18503 | ||
18504 | if (fe != NULL) | |
18505 | dwarf2_start_subfile (fe->name, fe->include_dir (lh)); | |
c906108c SS |
18506 | } |
18507 | ||
a738430d | 18508 | /* Decode the table. */ |
d9b3de22 | 18509 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
18510 | { |
18511 | op_code = read_1_byte (abfd, line_ptr); | |
18512 | line_ptr += 1; | |
9aa1fe7e | 18513 | |
debd256d | 18514 | if (op_code >= lh->opcode_base) |
6e70227d | 18515 | { |
8e07a239 | 18516 | /* Special opcode. */ |
6f77053d | 18517 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
18518 | } |
18519 | else switch (op_code) | |
c906108c SS |
18520 | { |
18521 | case DW_LNS_extended_op: | |
3e43a32a MS |
18522 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
18523 | &bytes_read); | |
473b7be6 | 18524 | line_ptr += bytes_read; |
a8c50c1f | 18525 | extended_end = line_ptr + extended_len; |
c906108c SS |
18526 | extended_op = read_1_byte (abfd, line_ptr); |
18527 | line_ptr += 1; | |
18528 | switch (extended_op) | |
18529 | { | |
18530 | case DW_LNE_end_sequence: | |
6f77053d PA |
18531 | state_machine.handle_end_sequence (); |
18532 | end_sequence = true; | |
c906108c SS |
18533 | break; |
18534 | case DW_LNE_set_address: | |
d9b3de22 DE |
18535 | { |
18536 | CORE_ADDR address | |
18537 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 18538 | line_ptr += bytes_read; |
6f77053d PA |
18539 | |
18540 | state_machine.check_line_address (cu, line_ptr, | |
18541 | lowpc, address); | |
18542 | state_machine.handle_set_address (baseaddr, address); | |
d9b3de22 | 18543 | } |
c906108c SS |
18544 | break; |
18545 | case DW_LNE_define_file: | |
debd256d | 18546 | { |
d521ce57 | 18547 | const char *cur_file; |
ecfb656c PA |
18548 | unsigned int mod_time, length; |
18549 | dir_index dindex; | |
6e70227d | 18550 | |
3e43a32a MS |
18551 | cur_file = read_direct_string (abfd, line_ptr, |
18552 | &bytes_read); | |
debd256d | 18553 | line_ptr += bytes_read; |
ecfb656c | 18554 | dindex = (dir_index) |
debd256d JB |
18555 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
18556 | line_ptr += bytes_read; | |
18557 | mod_time = | |
18558 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18559 | line_ptr += bytes_read; | |
18560 | length = | |
18561 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18562 | line_ptr += bytes_read; | |
ecfb656c | 18563 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 18564 | } |
c906108c | 18565 | break; |
d0c6ba3d | 18566 | case DW_LNE_set_discriminator: |
6f77053d PA |
18567 | { |
18568 | /* The discriminator is not interesting to the | |
18569 | debugger; just ignore it. We still need to | |
18570 | check its value though: | |
18571 | if there are consecutive entries for the same | |
18572 | (non-prologue) line we want to coalesce them. | |
18573 | PR 17276. */ | |
18574 | unsigned int discr | |
18575 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18576 | line_ptr += bytes_read; | |
18577 | ||
18578 | state_machine.handle_set_discriminator (discr); | |
18579 | } | |
d0c6ba3d | 18580 | break; |
c906108c | 18581 | default: |
4d3c2250 | 18582 | complaint (&symfile_complaints, |
e2e0b3e5 | 18583 | _("mangled .debug_line section")); |
debd256d | 18584 | return; |
c906108c | 18585 | } |
a8c50c1f DJ |
18586 | /* Make sure that we parsed the extended op correctly. If e.g. |
18587 | we expected a different address size than the producer used, | |
18588 | we may have read the wrong number of bytes. */ | |
18589 | if (line_ptr != extended_end) | |
18590 | { | |
18591 | complaint (&symfile_complaints, | |
18592 | _("mangled .debug_line section")); | |
18593 | return; | |
18594 | } | |
c906108c SS |
18595 | break; |
18596 | case DW_LNS_copy: | |
6f77053d | 18597 | state_machine.handle_copy (); |
c906108c SS |
18598 | break; |
18599 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
18600 | { |
18601 | CORE_ADDR adjust | |
18602 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 18603 | line_ptr += bytes_read; |
6f77053d PA |
18604 | |
18605 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 18606 | } |
c906108c SS |
18607 | break; |
18608 | case DW_LNS_advance_line: | |
a05a36a5 DE |
18609 | { |
18610 | int line_delta | |
18611 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 18612 | line_ptr += bytes_read; |
6f77053d PA |
18613 | |
18614 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 18615 | } |
c906108c SS |
18616 | break; |
18617 | case DW_LNS_set_file: | |
d9b3de22 | 18618 | { |
6f77053d | 18619 | file_name_index file |
ecfb656c PA |
18620 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
18621 | &bytes_read); | |
d9b3de22 | 18622 | line_ptr += bytes_read; |
8c43009f | 18623 | |
6f77053d | 18624 | state_machine.handle_set_file (file); |
d9b3de22 | 18625 | } |
c906108c SS |
18626 | break; |
18627 | case DW_LNS_set_column: | |
0ad93d4f | 18628 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
18629 | line_ptr += bytes_read; |
18630 | break; | |
18631 | case DW_LNS_negate_stmt: | |
6f77053d | 18632 | state_machine.handle_negate_stmt (); |
c906108c SS |
18633 | break; |
18634 | case DW_LNS_set_basic_block: | |
c906108c | 18635 | break; |
c2c6d25f JM |
18636 | /* Add to the address register of the state machine the |
18637 | address increment value corresponding to special opcode | |
a738430d MK |
18638 | 255. I.e., this value is scaled by the minimum |
18639 | instruction length since special opcode 255 would have | |
b021a221 | 18640 | scaled the increment. */ |
c906108c | 18641 | case DW_LNS_const_add_pc: |
6f77053d | 18642 | state_machine.handle_const_add_pc (); |
c906108c SS |
18643 | break; |
18644 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 18645 | { |
6f77053d | 18646 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 18647 | line_ptr += 2; |
6f77053d PA |
18648 | |
18649 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 18650 | } |
c906108c | 18651 | break; |
9aa1fe7e | 18652 | default: |
a738430d MK |
18653 | { |
18654 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 18655 | int i; |
a738430d | 18656 | |
debd256d | 18657 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
18658 | { |
18659 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
18660 | line_ptr += bytes_read; | |
18661 | } | |
18662 | } | |
c906108c SS |
18663 | } |
18664 | } | |
d9b3de22 DE |
18665 | |
18666 | if (!end_sequence) | |
18667 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
18668 | ||
18669 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
18670 | in which case we still finish recording the last line). */ | |
6f77053d | 18671 | state_machine.record_line (true); |
c906108c | 18672 | } |
f3f5162e DE |
18673 | } |
18674 | ||
18675 | /* Decode the Line Number Program (LNP) for the given line_header | |
18676 | structure and CU. The actual information extracted and the type | |
18677 | of structures created from the LNP depends on the value of PST. | |
18678 | ||
18679 | 1. If PST is NULL, then this procedure uses the data from the program | |
18680 | to create all necessary symbol tables, and their linetables. | |
18681 | ||
18682 | 2. If PST is not NULL, this procedure reads the program to determine | |
18683 | the list of files included by the unit represented by PST, and | |
18684 | builds all the associated partial symbol tables. | |
18685 | ||
18686 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
18687 | It is used for relative paths in the line table. | |
18688 | NOTE: When processing partial symtabs (pst != NULL), | |
18689 | comp_dir == pst->dirname. | |
18690 | ||
18691 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
18692 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
18693 | symtab we don't use it in the name of the psymtabs we create. | |
18694 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
18695 | A good testcase for this is mb-inline.exp. |
18696 | ||
527f3840 JK |
18697 | LOWPC is the lowest address in CU (or 0 if not known). |
18698 | ||
18699 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
18700 | for its PC<->lines mapping information. Otherwise only the filename | |
18701 | table is read in. */ | |
f3f5162e DE |
18702 | |
18703 | static void | |
18704 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 18705 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 18706 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e DE |
18707 | { |
18708 | struct objfile *objfile = cu->objfile; | |
18709 | const int decode_for_pst_p = (pst != NULL); | |
f3f5162e | 18710 | |
527f3840 JK |
18711 | if (decode_mapping) |
18712 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
18713 | |
18714 | if (decode_for_pst_p) | |
18715 | { | |
18716 | int file_index; | |
18717 | ||
18718 | /* Now that we're done scanning the Line Header Program, we can | |
18719 | create the psymtab of each included file. */ | |
fff8551c | 18720 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
18721 | if (lh->file_names[file_index].included_p == 1) |
18722 | { | |
d521ce57 | 18723 | const char *include_name = |
c6da4cef DE |
18724 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
18725 | if (include_name != NULL) | |
aaa75496 JB |
18726 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
18727 | } | |
18728 | } | |
cb1df416 DJ |
18729 | else |
18730 | { | |
18731 | /* Make sure a symtab is created for every file, even files | |
18732 | which contain only variables (i.e. no code with associated | |
18733 | line numbers). */ | |
43f3e411 | 18734 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 18735 | int i; |
cb1df416 | 18736 | |
fff8551c | 18737 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 18738 | { |
8c43009f | 18739 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 18740 | |
8c43009f | 18741 | dwarf2_start_subfile (fe.name, fe.include_dir (lh)); |
cb1df416 | 18742 | |
cb1df416 | 18743 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
18744 | { |
18745 | current_subfile->symtab | |
18746 | = allocate_symtab (cust, current_subfile->name); | |
18747 | } | |
8c43009f | 18748 | fe.symtab = current_subfile->symtab; |
cb1df416 DJ |
18749 | } |
18750 | } | |
c906108c SS |
18751 | } |
18752 | ||
18753 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
18754 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 18755 | or NULL if not known. |
c906108c SS |
18756 | This routine tries to keep line numbers from identical absolute and |
18757 | relative file names in a common subfile. | |
18758 | ||
18759 | Using the `list' example from the GDB testsuite, which resides in | |
18760 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
18761 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
18762 | ||
c5aa993b | 18763 | DW_AT_name: /srcdir/list0.c |
4d663531 | 18764 | DW_AT_comp_dir: /compdir |
357e46e7 | 18765 | files.files[0].name: list0.h |
c5aa993b | 18766 | files.files[0].dir: /srcdir |
357e46e7 | 18767 | files.files[1].name: list0.c |
c5aa993b | 18768 | files.files[1].dir: /srcdir |
c906108c SS |
18769 | |
18770 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
18771 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
18772 | start_subfile will ensure that this happens provided that we pass the | |
18773 | concatenation of files.files[1].dir and files.files[1].name as the | |
18774 | subfile's name. */ | |
c906108c SS |
18775 | |
18776 | static void | |
4d663531 | 18777 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 18778 | { |
d521ce57 | 18779 | char *copy = NULL; |
4f1520fb | 18780 | |
4d663531 | 18781 | /* In order not to lose the line information directory, |
4f1520fb FR |
18782 | we concatenate it to the filename when it makes sense. |
18783 | Note that the Dwarf3 standard says (speaking of filenames in line | |
18784 | information): ``The directory index is ignored for file names | |
18785 | that represent full path names''. Thus ignoring dirname in the | |
18786 | `else' branch below isn't an issue. */ | |
c906108c | 18787 | |
d5166ae1 | 18788 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
18789 | { |
18790 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
18791 | filename = copy; | |
18792 | } | |
c906108c | 18793 | |
4d663531 | 18794 | start_subfile (filename); |
4f1520fb | 18795 | |
d521ce57 TT |
18796 | if (copy != NULL) |
18797 | xfree (copy); | |
c906108c SS |
18798 | } |
18799 | ||
f4dc4d17 DE |
18800 | /* Start a symtab for DWARF. |
18801 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
18802 | ||
43f3e411 | 18803 | static struct compunit_symtab * |
f4dc4d17 | 18804 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 18805 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 18806 | { |
43f3e411 DE |
18807 | struct compunit_symtab *cust |
18808 | = start_symtab (cu->objfile, name, comp_dir, low_pc); | |
18809 | ||
f4dc4d17 DE |
18810 | record_debugformat ("DWARF 2"); |
18811 | record_producer (cu->producer); | |
18812 | ||
18813 | /* We assume that we're processing GCC output. */ | |
18814 | processing_gcc_compilation = 2; | |
18815 | ||
4d4ec4e5 | 18816 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
18817 | |
18818 | return cust; | |
f4dc4d17 DE |
18819 | } |
18820 | ||
4c2df51b DJ |
18821 | static void |
18822 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 18823 | struct dwarf2_cu *cu) |
4c2df51b | 18824 | { |
e7c27a73 DJ |
18825 | struct objfile *objfile = cu->objfile; |
18826 | struct comp_unit_head *cu_header = &cu->header; | |
18827 | ||
4c2df51b DJ |
18828 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
18829 | code here to turn a symbol with DW_AT_external and a | |
18830 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
18831 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
18832 | with some versions of binutils) where shared libraries could have | |
18833 | relocations against symbols in their debug information - the | |
18834 | minimal symbol would have the right address, but the debug info | |
18835 | would not. It's no longer necessary, because we will explicitly | |
18836 | apply relocations when we read in the debug information now. */ | |
18837 | ||
18838 | /* A DW_AT_location attribute with no contents indicates that a | |
18839 | variable has been optimized away. */ | |
18840 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
18841 | { | |
f1e6e072 | 18842 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
18843 | return; |
18844 | } | |
18845 | ||
18846 | /* Handle one degenerate form of location expression specially, to | |
18847 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
18848 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
18849 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
18850 | |
18851 | if (attr_form_is_block (attr) | |
3019eac3 DE |
18852 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
18853 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
18854 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
18855 | && (DW_BLOCK (attr)->size | |
18856 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 18857 | { |
891d2f0b | 18858 | unsigned int dummy; |
4c2df51b | 18859 | |
3019eac3 DE |
18860 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
18861 | SYMBOL_VALUE_ADDRESS (sym) = | |
18862 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
18863 | else | |
18864 | SYMBOL_VALUE_ADDRESS (sym) = | |
18865 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 18866 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
18867 | fixup_symbol_section (sym, objfile); |
18868 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
18869 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
18870 | return; |
18871 | } | |
18872 | ||
18873 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
18874 | expression evaluator, and use LOC_COMPUTED only when necessary | |
18875 | (i.e. when the value of a register or memory location is | |
18876 | referenced, or a thread-local block, etc.). Then again, it might | |
18877 | not be worthwhile. I'm assuming that it isn't unless performance | |
18878 | or memory numbers show me otherwise. */ | |
18879 | ||
f1e6e072 | 18880 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 18881 | |
f1e6e072 | 18882 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 18883 | cu->has_loclist = 1; |
4c2df51b DJ |
18884 | } |
18885 | ||
c906108c SS |
18886 | /* Given a pointer to a DWARF information entry, figure out if we need |
18887 | to make a symbol table entry for it, and if so, create a new entry | |
18888 | and return a pointer to it. | |
18889 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
18890 | used the passed type. |
18891 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
18892 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
18893 | |
18894 | static struct symbol * | |
34eaf542 TT |
18895 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
18896 | struct symbol *space) | |
c906108c | 18897 | { |
e7c27a73 | 18898 | struct objfile *objfile = cu->objfile; |
3e29f34a | 18899 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 18900 | struct symbol *sym = NULL; |
15d034d0 | 18901 | const char *name; |
c906108c SS |
18902 | struct attribute *attr = NULL; |
18903 | struct attribute *attr2 = NULL; | |
e142c38c | 18904 | CORE_ADDR baseaddr; |
e37fd15a SW |
18905 | struct pending **list_to_add = NULL; |
18906 | ||
edb3359d | 18907 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
18908 | |
18909 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 18910 | |
94af9270 | 18911 | name = dwarf2_name (die, cu); |
c906108c SS |
18912 | if (name) |
18913 | { | |
94af9270 | 18914 | const char *linkagename; |
34eaf542 | 18915 | int suppress_add = 0; |
94af9270 | 18916 | |
34eaf542 TT |
18917 | if (space) |
18918 | sym = space; | |
18919 | else | |
e623cf5d | 18920 | sym = allocate_symbol (objfile); |
c906108c | 18921 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
18922 | |
18923 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 18924 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
18925 | linkagename = dwarf2_physname (name, die, cu); |
18926 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 18927 | |
f55ee35c JK |
18928 | /* Fortran does not have mangling standard and the mangling does differ |
18929 | between gfortran, iFort etc. */ | |
18930 | if (cu->language == language_fortran | |
b250c185 | 18931 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 18932 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 18933 | dwarf2_full_name (name, die, cu), |
29df156d | 18934 | NULL); |
f55ee35c | 18935 | |
c906108c | 18936 | /* Default assumptions. |
c5aa993b | 18937 | Use the passed type or decode it from the die. */ |
176620f1 | 18938 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 18939 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
18940 | if (type != NULL) |
18941 | SYMBOL_TYPE (sym) = type; | |
18942 | else | |
e7c27a73 | 18943 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
18944 | attr = dwarf2_attr (die, |
18945 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
18946 | cu); | |
c906108c SS |
18947 | if (attr) |
18948 | { | |
18949 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
18950 | } | |
cb1df416 | 18951 | |
edb3359d DJ |
18952 | attr = dwarf2_attr (die, |
18953 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
18954 | cu); | |
cb1df416 DJ |
18955 | if (attr) |
18956 | { | |
ecfb656c | 18957 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 18958 | struct file_entry *fe; |
9a619af0 | 18959 | |
ecfb656c PA |
18960 | if (cu->line_header != NULL) |
18961 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
18962 | else |
18963 | fe = NULL; | |
18964 | ||
18965 | if (fe == NULL) | |
cb1df416 DJ |
18966 | complaint (&symfile_complaints, |
18967 | _("file index out of range")); | |
8c43009f PA |
18968 | else |
18969 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
18970 | } |
18971 | ||
c906108c SS |
18972 | switch (die->tag) |
18973 | { | |
18974 | case DW_TAG_label: | |
e142c38c | 18975 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 18976 | if (attr) |
3e29f34a MR |
18977 | { |
18978 | CORE_ADDR addr; | |
18979 | ||
18980 | addr = attr_value_as_address (attr); | |
18981 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
18982 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
18983 | } | |
0f5238ed TT |
18984 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
18985 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 18986 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 18987 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
18988 | break; |
18989 | case DW_TAG_subprogram: | |
18990 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
18991 | finish_block. */ | |
f1e6e072 | 18992 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 18993 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
18994 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
18995 | || cu->language == language_ada) | |
c906108c | 18996 | { |
2cfa0c8d JB |
18997 | /* Subprograms marked external are stored as a global symbol. |
18998 | Ada subprograms, whether marked external or not, are always | |
18999 | stored as a global symbol, because we want to be able to | |
19000 | access them globally. For instance, we want to be able | |
19001 | to break on a nested subprogram without having to | |
19002 | specify the context. */ | |
e37fd15a | 19003 | list_to_add = &global_symbols; |
c906108c SS |
19004 | } |
19005 | else | |
19006 | { | |
e37fd15a | 19007 | list_to_add = cu->list_in_scope; |
c906108c SS |
19008 | } |
19009 | break; | |
edb3359d DJ |
19010 | case DW_TAG_inlined_subroutine: |
19011 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
19012 | finish_block. */ | |
f1e6e072 | 19013 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 19014 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 19015 | list_to_add = cu->list_in_scope; |
edb3359d | 19016 | break; |
34eaf542 TT |
19017 | case DW_TAG_template_value_param: |
19018 | suppress_add = 1; | |
19019 | /* Fall through. */ | |
72929c62 | 19020 | case DW_TAG_constant: |
c906108c | 19021 | case DW_TAG_variable: |
254e6b9e | 19022 | case DW_TAG_member: |
0963b4bd MS |
19023 | /* Compilation with minimal debug info may result in |
19024 | variables with missing type entries. Change the | |
19025 | misleading `void' type to something sensible. */ | |
c906108c | 19026 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 19027 | SYMBOL_TYPE (sym) |
46bf5051 | 19028 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 19029 | |
e142c38c | 19030 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
19031 | /* In the case of DW_TAG_member, we should only be called for |
19032 | static const members. */ | |
19033 | if (die->tag == DW_TAG_member) | |
19034 | { | |
3863f96c DE |
19035 | /* dwarf2_add_field uses die_is_declaration, |
19036 | so we do the same. */ | |
254e6b9e DE |
19037 | gdb_assert (die_is_declaration (die, cu)); |
19038 | gdb_assert (attr); | |
19039 | } | |
c906108c SS |
19040 | if (attr) |
19041 | { | |
e7c27a73 | 19042 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 19043 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 19044 | if (!suppress_add) |
34eaf542 TT |
19045 | { |
19046 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 19047 | list_to_add = &global_symbols; |
34eaf542 | 19048 | else |
e37fd15a | 19049 | list_to_add = cu->list_in_scope; |
34eaf542 | 19050 | } |
c906108c SS |
19051 | break; |
19052 | } | |
e142c38c | 19053 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
19054 | if (attr) |
19055 | { | |
e7c27a73 | 19056 | var_decode_location (attr, sym, cu); |
e142c38c | 19057 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
19058 | |
19059 | /* Fortran explicitly imports any global symbols to the local | |
19060 | scope by DW_TAG_common_block. */ | |
19061 | if (cu->language == language_fortran && die->parent | |
19062 | && die->parent->tag == DW_TAG_common_block) | |
19063 | attr2 = NULL; | |
19064 | ||
caac4577 JG |
19065 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
19066 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
19067 | && !dwarf2_per_objfile->has_section_at_zero) | |
19068 | { | |
19069 | /* When a static variable is eliminated by the linker, | |
19070 | the corresponding debug information is not stripped | |
19071 | out, but the variable address is set to null; | |
19072 | do not add such variables into symbol table. */ | |
19073 | } | |
19074 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 19075 | { |
f55ee35c JK |
19076 | /* Workaround gfortran PR debug/40040 - it uses |
19077 | DW_AT_location for variables in -fPIC libraries which may | |
19078 | get overriden by other libraries/executable and get | |
19079 | a different address. Resolve it by the minimal symbol | |
19080 | which may come from inferior's executable using copy | |
19081 | relocation. Make this workaround only for gfortran as for | |
19082 | other compilers GDB cannot guess the minimal symbol | |
19083 | Fortran mangling kind. */ | |
19084 | if (cu->language == language_fortran && die->parent | |
19085 | && die->parent->tag == DW_TAG_module | |
19086 | && cu->producer | |
28586665 | 19087 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 19088 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 19089 | |
1c809c68 TT |
19090 | /* A variable with DW_AT_external is never static, |
19091 | but it may be block-scoped. */ | |
19092 | list_to_add = (cu->list_in_scope == &file_symbols | |
19093 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 19094 | } |
c906108c | 19095 | else |
e37fd15a | 19096 | list_to_add = cu->list_in_scope; |
c906108c SS |
19097 | } |
19098 | else | |
19099 | { | |
19100 | /* We do not know the address of this symbol. | |
c5aa993b JM |
19101 | If it is an external symbol and we have type information |
19102 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
19103 | The address of the variable will then be determined from | |
19104 | the minimal symbol table whenever the variable is | |
19105 | referenced. */ | |
e142c38c | 19106 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
19107 | |
19108 | /* Fortran explicitly imports any global symbols to the local | |
19109 | scope by DW_TAG_common_block. */ | |
19110 | if (cu->language == language_fortran && die->parent | |
19111 | && die->parent->tag == DW_TAG_common_block) | |
19112 | { | |
19113 | /* SYMBOL_CLASS doesn't matter here because | |
19114 | read_common_block is going to reset it. */ | |
19115 | if (!suppress_add) | |
19116 | list_to_add = cu->list_in_scope; | |
19117 | } | |
19118 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
19119 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 19120 | { |
0fe7935b DJ |
19121 | /* A variable with DW_AT_external is never static, but it |
19122 | may be block-scoped. */ | |
19123 | list_to_add = (cu->list_in_scope == &file_symbols | |
19124 | ? &global_symbols : cu->list_in_scope); | |
19125 | ||
f1e6e072 | 19126 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 19127 | } |
442ddf59 JK |
19128 | else if (!die_is_declaration (die, cu)) |
19129 | { | |
19130 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
19131 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
19132 | if (!suppress_add) |
19133 | list_to_add = cu->list_in_scope; | |
442ddf59 | 19134 | } |
c906108c SS |
19135 | } |
19136 | break; | |
19137 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
19138 | /* If we are inside a function, mark this as an argument. If |
19139 | not, we might be looking at an argument to an inlined function | |
19140 | when we do not have enough information to show inlined frames; | |
19141 | pretend it's a local variable in that case so that the user can | |
19142 | still see it. */ | |
19143 | if (context_stack_depth > 0 | |
19144 | && context_stack[context_stack_depth - 1].name != NULL) | |
19145 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 19146 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
19147 | if (attr) |
19148 | { | |
e7c27a73 | 19149 | var_decode_location (attr, sym, cu); |
c906108c | 19150 | } |
e142c38c | 19151 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
19152 | if (attr) |
19153 | { | |
e7c27a73 | 19154 | dwarf2_const_value (attr, sym, cu); |
c906108c | 19155 | } |
f346a30d | 19156 | |
e37fd15a | 19157 | list_to_add = cu->list_in_scope; |
c906108c SS |
19158 | break; |
19159 | case DW_TAG_unspecified_parameters: | |
19160 | /* From varargs functions; gdb doesn't seem to have any | |
19161 | interest in this information, so just ignore it for now. | |
19162 | (FIXME?) */ | |
19163 | break; | |
34eaf542 TT |
19164 | case DW_TAG_template_type_param: |
19165 | suppress_add = 1; | |
19166 | /* Fall through. */ | |
c906108c | 19167 | case DW_TAG_class_type: |
680b30c7 | 19168 | case DW_TAG_interface_type: |
c906108c SS |
19169 | case DW_TAG_structure_type: |
19170 | case DW_TAG_union_type: | |
72019c9c | 19171 | case DW_TAG_set_type: |
c906108c | 19172 | case DW_TAG_enumeration_type: |
f1e6e072 | 19173 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 19174 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 19175 | |
63d06c5c | 19176 | { |
9c37b5ae | 19177 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
19178 | really ever be static objects: otherwise, if you try |
19179 | to, say, break of a class's method and you're in a file | |
19180 | which doesn't mention that class, it won't work unless | |
19181 | the check for all static symbols in lookup_symbol_aux | |
19182 | saves you. See the OtherFileClass tests in | |
19183 | gdb.c++/namespace.exp. */ | |
19184 | ||
e37fd15a | 19185 | if (!suppress_add) |
34eaf542 | 19186 | { |
34eaf542 | 19187 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 19188 | && cu->language == language_cplus |
34eaf542 | 19189 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 19190 | |
64382290 | 19191 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 19192 | ... }" also defines a typedef for "foo". */ |
64382290 | 19193 | if (cu->language == language_cplus |
45280282 | 19194 | || cu->language == language_ada |
c44af4eb TT |
19195 | || cu->language == language_d |
19196 | || cu->language == language_rust) | |
64382290 TT |
19197 | { |
19198 | /* The symbol's name is already allocated along | |
19199 | with this objfile, so we don't need to | |
19200 | duplicate it for the type. */ | |
19201 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
19202 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
19203 | } | |
63d06c5c DC |
19204 | } |
19205 | } | |
c906108c SS |
19206 | break; |
19207 | case DW_TAG_typedef: | |
f1e6e072 | 19208 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 19209 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 19210 | list_to_add = cu->list_in_scope; |
63d06c5c | 19211 | break; |
c906108c | 19212 | case DW_TAG_base_type: |
a02abb62 | 19213 | case DW_TAG_subrange_type: |
f1e6e072 | 19214 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 19215 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 19216 | list_to_add = cu->list_in_scope; |
c906108c SS |
19217 | break; |
19218 | case DW_TAG_enumerator: | |
e142c38c | 19219 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
19220 | if (attr) |
19221 | { | |
e7c27a73 | 19222 | dwarf2_const_value (attr, sym, cu); |
c906108c | 19223 | } |
63d06c5c DC |
19224 | { |
19225 | /* NOTE: carlton/2003-11-10: See comment above in the | |
19226 | DW_TAG_class_type, etc. block. */ | |
19227 | ||
e142c38c | 19228 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 19229 | && cu->language == language_cplus |
e142c38c | 19230 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 19231 | } |
c906108c | 19232 | break; |
74921315 | 19233 | case DW_TAG_imported_declaration: |
5c4e30ca | 19234 | case DW_TAG_namespace: |
f1e6e072 | 19235 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 19236 | list_to_add = &global_symbols; |
5c4e30ca | 19237 | break; |
530e8392 KB |
19238 | case DW_TAG_module: |
19239 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
19240 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
19241 | list_to_add = &global_symbols; | |
19242 | break; | |
4357ac6c | 19243 | case DW_TAG_common_block: |
f1e6e072 | 19244 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
19245 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
19246 | add_symbol_to_list (sym, cu->list_in_scope); | |
19247 | break; | |
c906108c SS |
19248 | default: |
19249 | /* Not a tag we recognize. Hopefully we aren't processing | |
19250 | trash data, but since we must specifically ignore things | |
19251 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 19252 | this point. */ |
e2e0b3e5 | 19253 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 19254 | dwarf_tag_name (die->tag)); |
c906108c SS |
19255 | break; |
19256 | } | |
df8a16a1 | 19257 | |
e37fd15a SW |
19258 | if (suppress_add) |
19259 | { | |
19260 | sym->hash_next = objfile->template_symbols; | |
19261 | objfile->template_symbols = sym; | |
19262 | list_to_add = NULL; | |
19263 | } | |
19264 | ||
19265 | if (list_to_add != NULL) | |
19266 | add_symbol_to_list (sym, list_to_add); | |
19267 | ||
df8a16a1 DJ |
19268 | /* For the benefit of old versions of GCC, check for anonymous |
19269 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 19270 | if (!cu->processing_has_namespace_info |
94af9270 | 19271 | && cu->language == language_cplus) |
a10964d1 | 19272 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
19273 | } |
19274 | return (sym); | |
19275 | } | |
19276 | ||
34eaf542 TT |
19277 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
19278 | ||
19279 | static struct symbol * | |
19280 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
19281 | { | |
19282 | return new_symbol_full (die, type, cu, NULL); | |
19283 | } | |
19284 | ||
98bfdba5 PA |
19285 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
19286 | zero-extend it as appropriate for the symbol's type. The DWARF | |
19287 | standard (v4) is not entirely clear about the meaning of using | |
19288 | DW_FORM_dataN for a constant with a signed type, where the type is | |
19289 | wider than the data. The conclusion of a discussion on the DWARF | |
19290 | list was that this is unspecified. We choose to always zero-extend | |
19291 | because that is the interpretation long in use by GCC. */ | |
c906108c | 19292 | |
98bfdba5 | 19293 | static gdb_byte * |
ff39bb5e | 19294 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 19295 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 19296 | { |
e7c27a73 | 19297 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
19298 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
19299 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
19300 | LONGEST l = DW_UNSND (attr); |
19301 | ||
19302 | if (bits < sizeof (*value) * 8) | |
19303 | { | |
19304 | l &= ((LONGEST) 1 << bits) - 1; | |
19305 | *value = l; | |
19306 | } | |
19307 | else if (bits == sizeof (*value) * 8) | |
19308 | *value = l; | |
19309 | else | |
19310 | { | |
224c3ddb | 19311 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
19312 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
19313 | return bytes; | |
19314 | } | |
19315 | ||
19316 | return NULL; | |
19317 | } | |
19318 | ||
19319 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
19320 | the value does not fit in *VALUE, set *BYTES - either already | |
19321 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
19322 | or, set *BATON, if we translated the constant to a location | |
19323 | expression. */ | |
19324 | ||
19325 | static void | |
ff39bb5e | 19326 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
19327 | const char *name, struct obstack *obstack, |
19328 | struct dwarf2_cu *cu, | |
d521ce57 | 19329 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
19330 | struct dwarf2_locexpr_baton **baton) |
19331 | { | |
19332 | struct objfile *objfile = cu->objfile; | |
19333 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 19334 | struct dwarf_block *blk; |
98bfdba5 PA |
19335 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
19336 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
19337 | ||
19338 | *value = 0; | |
19339 | *bytes = NULL; | |
19340 | *baton = NULL; | |
c906108c SS |
19341 | |
19342 | switch (attr->form) | |
19343 | { | |
19344 | case DW_FORM_addr: | |
3019eac3 | 19345 | case DW_FORM_GNU_addr_index: |
ac56253d | 19346 | { |
ac56253d TT |
19347 | gdb_byte *data; |
19348 | ||
98bfdba5 PA |
19349 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
19350 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 19351 | cu_header->addr_size, |
98bfdba5 | 19352 | TYPE_LENGTH (type)); |
ac56253d TT |
19353 | /* Symbols of this form are reasonably rare, so we just |
19354 | piggyback on the existing location code rather than writing | |
19355 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 19356 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
19357 | (*baton)->per_cu = cu->per_cu; |
19358 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 19359 | |
98bfdba5 | 19360 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 19361 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 19362 | (*baton)->data = data; |
ac56253d TT |
19363 | |
19364 | data[0] = DW_OP_addr; | |
19365 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
19366 | byte_order, DW_ADDR (attr)); | |
19367 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 19368 | } |
c906108c | 19369 | break; |
4ac36638 | 19370 | case DW_FORM_string: |
93b5768b | 19371 | case DW_FORM_strp: |
3019eac3 | 19372 | case DW_FORM_GNU_str_index: |
36586728 | 19373 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
19374 | /* DW_STRING is already allocated on the objfile obstack, point |
19375 | directly to it. */ | |
d521ce57 | 19376 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 19377 | break; |
c906108c SS |
19378 | case DW_FORM_block1: |
19379 | case DW_FORM_block2: | |
19380 | case DW_FORM_block4: | |
19381 | case DW_FORM_block: | |
2dc7f7b3 | 19382 | case DW_FORM_exprloc: |
0224619f | 19383 | case DW_FORM_data16: |
c906108c | 19384 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
19385 | if (TYPE_LENGTH (type) != blk->size) |
19386 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
19387 | TYPE_LENGTH (type)); | |
19388 | *bytes = blk->data; | |
c906108c | 19389 | break; |
2df3850c JM |
19390 | |
19391 | /* The DW_AT_const_value attributes are supposed to carry the | |
19392 | symbol's value "represented as it would be on the target | |
19393 | architecture." By the time we get here, it's already been | |
19394 | converted to host endianness, so we just need to sign- or | |
19395 | zero-extend it as appropriate. */ | |
19396 | case DW_FORM_data1: | |
3aef2284 | 19397 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 19398 | break; |
c906108c | 19399 | case DW_FORM_data2: |
3aef2284 | 19400 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 19401 | break; |
c906108c | 19402 | case DW_FORM_data4: |
3aef2284 | 19403 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 19404 | break; |
c906108c | 19405 | case DW_FORM_data8: |
3aef2284 | 19406 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
19407 | break; |
19408 | ||
c906108c | 19409 | case DW_FORM_sdata: |
98bfdba5 | 19410 | *value = DW_SND (attr); |
2df3850c JM |
19411 | break; |
19412 | ||
c906108c | 19413 | case DW_FORM_udata: |
98bfdba5 | 19414 | *value = DW_UNSND (attr); |
c906108c | 19415 | break; |
2df3850c | 19416 | |
c906108c | 19417 | default: |
4d3c2250 | 19418 | complaint (&symfile_complaints, |
e2e0b3e5 | 19419 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 19420 | dwarf_form_name (attr->form)); |
98bfdba5 | 19421 | *value = 0; |
c906108c SS |
19422 | break; |
19423 | } | |
19424 | } | |
19425 | ||
2df3850c | 19426 | |
98bfdba5 PA |
19427 | /* Copy constant value from an attribute to a symbol. */ |
19428 | ||
2df3850c | 19429 | static void |
ff39bb5e | 19430 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 19431 | struct dwarf2_cu *cu) |
2df3850c | 19432 | { |
98bfdba5 | 19433 | struct objfile *objfile = cu->objfile; |
12df843f | 19434 | LONGEST value; |
d521ce57 | 19435 | const gdb_byte *bytes; |
98bfdba5 | 19436 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 19437 | |
98bfdba5 PA |
19438 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
19439 | SYMBOL_PRINT_NAME (sym), | |
19440 | &objfile->objfile_obstack, cu, | |
19441 | &value, &bytes, &baton); | |
2df3850c | 19442 | |
98bfdba5 PA |
19443 | if (baton != NULL) |
19444 | { | |
98bfdba5 | 19445 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 19446 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
19447 | } |
19448 | else if (bytes != NULL) | |
19449 | { | |
19450 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 19451 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
19452 | } |
19453 | else | |
19454 | { | |
19455 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 19456 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 19457 | } |
2df3850c JM |
19458 | } |
19459 | ||
c906108c SS |
19460 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
19461 | ||
19462 | static struct type * | |
e7c27a73 | 19463 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19464 | { |
c906108c | 19465 | struct attribute *type_attr; |
c906108c | 19466 | |
e142c38c | 19467 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
19468 | if (!type_attr) |
19469 | { | |
19470 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 19471 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 19472 | } |
348e048f | 19473 | |
673bfd45 | 19474 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
19475 | } |
19476 | ||
b4ba55a1 JB |
19477 | /* True iff CU's producer generates GNAT Ada auxiliary information |
19478 | that allows to find parallel types through that information instead | |
19479 | of having to do expensive parallel lookups by type name. */ | |
19480 | ||
19481 | static int | |
19482 | need_gnat_info (struct dwarf2_cu *cu) | |
19483 | { | |
19484 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
19485 | of GNAT produces this auxiliary information, without any indication | |
19486 | that it is produced. Part of enhancing the FSF version of GNAT | |
19487 | to produce that information will be to put in place an indicator | |
19488 | that we can use in order to determine whether the descriptive type | |
19489 | info is available or not. One suggestion that has been made is | |
19490 | to use a new attribute, attached to the CU die. For now, assume | |
19491 | that the descriptive type info is not available. */ | |
19492 | return 0; | |
19493 | } | |
19494 | ||
b4ba55a1 JB |
19495 | /* Return the auxiliary type of the die in question using its |
19496 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
19497 | attribute is not present. */ | |
19498 | ||
19499 | static struct type * | |
19500 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
19501 | { | |
b4ba55a1 | 19502 | struct attribute *type_attr; |
b4ba55a1 JB |
19503 | |
19504 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
19505 | if (!type_attr) | |
19506 | return NULL; | |
19507 | ||
673bfd45 | 19508 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
19509 | } |
19510 | ||
19511 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
19512 | descriptive type accordingly. */ | |
19513 | ||
19514 | static void | |
19515 | set_descriptive_type (struct type *type, struct die_info *die, | |
19516 | struct dwarf2_cu *cu) | |
19517 | { | |
19518 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
19519 | ||
19520 | if (descriptive_type) | |
19521 | { | |
19522 | ALLOCATE_GNAT_AUX_TYPE (type); | |
19523 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
19524 | } | |
19525 | } | |
19526 | ||
c906108c SS |
19527 | /* Return the containing type of the die in question using its |
19528 | DW_AT_containing_type attribute. */ | |
19529 | ||
19530 | static struct type * | |
e7c27a73 | 19531 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19532 | { |
c906108c | 19533 | struct attribute *type_attr; |
c906108c | 19534 | |
e142c38c | 19535 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
19536 | if (!type_attr) |
19537 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 19538 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 19539 | |
673bfd45 | 19540 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
19541 | } |
19542 | ||
ac9ec31b DE |
19543 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
19544 | ||
19545 | static struct type * | |
19546 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
19547 | { | |
19548 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19549 | char *message, *saved; | |
19550 | ||
19551 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 19552 | objfile_name (objfile), |
9c541725 PA |
19553 | to_underlying (cu->header.sect_off), |
19554 | to_underlying (die->sect_off)); | |
224c3ddb SM |
19555 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
19556 | message, strlen (message)); | |
ac9ec31b DE |
19557 | xfree (message); |
19558 | ||
19f392bc | 19559 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
19560 | } |
19561 | ||
673bfd45 | 19562 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
19563 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
19564 | DW_AT_containing_type. | |
673bfd45 DE |
19565 | If there is no type substitute an error marker. */ |
19566 | ||
c906108c | 19567 | static struct type * |
ff39bb5e | 19568 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 19569 | struct dwarf2_cu *cu) |
c906108c | 19570 | { |
bb5ed363 | 19571 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
19572 | struct type *this_type; |
19573 | ||
ac9ec31b DE |
19574 | gdb_assert (attr->name == DW_AT_type |
19575 | || attr->name == DW_AT_GNAT_descriptive_type | |
19576 | || attr->name == DW_AT_containing_type); | |
19577 | ||
673bfd45 DE |
19578 | /* First see if we have it cached. */ |
19579 | ||
36586728 TT |
19580 | if (attr->form == DW_FORM_GNU_ref_alt) |
19581 | { | |
19582 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 19583 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 19584 | |
9c541725 PA |
19585 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, cu->objfile); |
19586 | this_type = get_die_type_at_offset (sect_off, per_cu); | |
36586728 | 19587 | } |
7771576e | 19588 | else if (attr_form_is_ref (attr)) |
673bfd45 | 19589 | { |
9c541725 | 19590 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 19591 | |
9c541725 | 19592 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 19593 | } |
55f1336d | 19594 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 19595 | { |
ac9ec31b | 19596 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 19597 | |
ac9ec31b | 19598 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
19599 | } |
19600 | else | |
19601 | { | |
ac9ec31b DE |
19602 | complaint (&symfile_complaints, |
19603 | _("Dwarf Error: Bad type attribute %s in DIE" | |
19604 | " at 0x%x [in module %s]"), | |
9c541725 | 19605 | dwarf_attr_name (attr->name), to_underlying (die->sect_off), |
4262abfb | 19606 | objfile_name (objfile)); |
ac9ec31b | 19607 | return build_error_marker_type (cu, die); |
673bfd45 DE |
19608 | } |
19609 | ||
19610 | /* If not cached we need to read it in. */ | |
19611 | ||
19612 | if (this_type == NULL) | |
19613 | { | |
ac9ec31b | 19614 | struct die_info *type_die = NULL; |
673bfd45 DE |
19615 | struct dwarf2_cu *type_cu = cu; |
19616 | ||
7771576e | 19617 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
19618 | type_die = follow_die_ref (die, attr, &type_cu); |
19619 | if (type_die == NULL) | |
19620 | return build_error_marker_type (cu, die); | |
19621 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
19622 | from an inter-CU reference and the type's CU got expanded before |
19623 | ours. */ | |
ac9ec31b | 19624 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
19625 | } |
19626 | ||
19627 | /* If we still don't have a type use an error marker. */ | |
19628 | ||
19629 | if (this_type == NULL) | |
ac9ec31b | 19630 | return build_error_marker_type (cu, die); |
673bfd45 | 19631 | |
f792889a | 19632 | return this_type; |
c906108c SS |
19633 | } |
19634 | ||
673bfd45 DE |
19635 | /* Return the type in DIE, CU. |
19636 | Returns NULL for invalid types. | |
19637 | ||
02142a6c | 19638 | This first does a lookup in die_type_hash, |
673bfd45 DE |
19639 | and only reads the die in if necessary. |
19640 | ||
19641 | NOTE: This can be called when reading in partial or full symbols. */ | |
19642 | ||
f792889a | 19643 | static struct type * |
e7c27a73 | 19644 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 19645 | { |
f792889a DJ |
19646 | struct type *this_type; |
19647 | ||
19648 | this_type = get_die_type (die, cu); | |
19649 | if (this_type) | |
19650 | return this_type; | |
19651 | ||
673bfd45 DE |
19652 | return read_type_die_1 (die, cu); |
19653 | } | |
19654 | ||
19655 | /* Read the type in DIE, CU. | |
19656 | Returns NULL for invalid types. */ | |
19657 | ||
19658 | static struct type * | |
19659 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
19660 | { | |
19661 | struct type *this_type = NULL; | |
19662 | ||
c906108c SS |
19663 | switch (die->tag) |
19664 | { | |
19665 | case DW_TAG_class_type: | |
680b30c7 | 19666 | case DW_TAG_interface_type: |
c906108c SS |
19667 | case DW_TAG_structure_type: |
19668 | case DW_TAG_union_type: | |
f792889a | 19669 | this_type = read_structure_type (die, cu); |
c906108c SS |
19670 | break; |
19671 | case DW_TAG_enumeration_type: | |
f792889a | 19672 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
19673 | break; |
19674 | case DW_TAG_subprogram: | |
19675 | case DW_TAG_subroutine_type: | |
edb3359d | 19676 | case DW_TAG_inlined_subroutine: |
f792889a | 19677 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
19678 | break; |
19679 | case DW_TAG_array_type: | |
f792889a | 19680 | this_type = read_array_type (die, cu); |
c906108c | 19681 | break; |
72019c9c | 19682 | case DW_TAG_set_type: |
f792889a | 19683 | this_type = read_set_type (die, cu); |
72019c9c | 19684 | break; |
c906108c | 19685 | case DW_TAG_pointer_type: |
f792889a | 19686 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
19687 | break; |
19688 | case DW_TAG_ptr_to_member_type: | |
f792889a | 19689 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
19690 | break; |
19691 | case DW_TAG_reference_type: | |
4297a3f0 AV |
19692 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
19693 | break; | |
19694 | case DW_TAG_rvalue_reference_type: | |
19695 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
19696 | break; |
19697 | case DW_TAG_const_type: | |
f792889a | 19698 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
19699 | break; |
19700 | case DW_TAG_volatile_type: | |
f792889a | 19701 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 19702 | break; |
06d66ee9 TT |
19703 | case DW_TAG_restrict_type: |
19704 | this_type = read_tag_restrict_type (die, cu); | |
19705 | break; | |
c906108c | 19706 | case DW_TAG_string_type: |
f792889a | 19707 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
19708 | break; |
19709 | case DW_TAG_typedef: | |
f792889a | 19710 | this_type = read_typedef (die, cu); |
c906108c | 19711 | break; |
a02abb62 | 19712 | case DW_TAG_subrange_type: |
f792889a | 19713 | this_type = read_subrange_type (die, cu); |
a02abb62 | 19714 | break; |
c906108c | 19715 | case DW_TAG_base_type: |
f792889a | 19716 | this_type = read_base_type (die, cu); |
c906108c | 19717 | break; |
81a17f79 | 19718 | case DW_TAG_unspecified_type: |
f792889a | 19719 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 19720 | break; |
0114d602 DJ |
19721 | case DW_TAG_namespace: |
19722 | this_type = read_namespace_type (die, cu); | |
19723 | break; | |
f55ee35c JK |
19724 | case DW_TAG_module: |
19725 | this_type = read_module_type (die, cu); | |
19726 | break; | |
a2c2acaf MW |
19727 | case DW_TAG_atomic_type: |
19728 | this_type = read_tag_atomic_type (die, cu); | |
19729 | break; | |
c906108c | 19730 | default: |
3e43a32a MS |
19731 | complaint (&symfile_complaints, |
19732 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 19733 | dwarf_tag_name (die->tag)); |
c906108c SS |
19734 | break; |
19735 | } | |
63d06c5c | 19736 | |
f792889a | 19737 | return this_type; |
63d06c5c DC |
19738 | } |
19739 | ||
abc72ce4 DE |
19740 | /* See if we can figure out if the class lives in a namespace. We do |
19741 | this by looking for a member function; its demangled name will | |
19742 | contain namespace info, if there is any. | |
19743 | Return the computed name or NULL. | |
19744 | Space for the result is allocated on the objfile's obstack. | |
19745 | This is the full-die version of guess_partial_die_structure_name. | |
19746 | In this case we know DIE has no useful parent. */ | |
19747 | ||
19748 | static char * | |
19749 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
19750 | { | |
19751 | struct die_info *spec_die; | |
19752 | struct dwarf2_cu *spec_cu; | |
19753 | struct die_info *child; | |
19754 | ||
19755 | spec_cu = cu; | |
19756 | spec_die = die_specification (die, &spec_cu); | |
19757 | if (spec_die != NULL) | |
19758 | { | |
19759 | die = spec_die; | |
19760 | cu = spec_cu; | |
19761 | } | |
19762 | ||
19763 | for (child = die->child; | |
19764 | child != NULL; | |
19765 | child = child->sibling) | |
19766 | { | |
19767 | if (child->tag == DW_TAG_subprogram) | |
19768 | { | |
7d45c7c3 | 19769 | const char *linkage_name; |
abc72ce4 | 19770 | |
7d45c7c3 KB |
19771 | linkage_name = dwarf2_string_attr (child, DW_AT_linkage_name, cu); |
19772 | if (linkage_name == NULL) | |
19773 | linkage_name = dwarf2_string_attr (child, DW_AT_MIPS_linkage_name, | |
19774 | cu); | |
19775 | if (linkage_name != NULL) | |
abc72ce4 DE |
19776 | { |
19777 | char *actual_name | |
19778 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 19779 | linkage_name); |
abc72ce4 DE |
19780 | char *name = NULL; |
19781 | ||
19782 | if (actual_name != NULL) | |
19783 | { | |
15d034d0 | 19784 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
19785 | |
19786 | if (die_name != NULL | |
19787 | && strcmp (die_name, actual_name) != 0) | |
19788 | { | |
19789 | /* Strip off the class name from the full name. | |
19790 | We want the prefix. */ | |
19791 | int die_name_len = strlen (die_name); | |
19792 | int actual_name_len = strlen (actual_name); | |
19793 | ||
19794 | /* Test for '::' as a sanity check. */ | |
19795 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
19796 | && actual_name[actual_name_len |
19797 | - die_name_len - 1] == ':') | |
224c3ddb SM |
19798 | name = (char *) obstack_copy0 ( |
19799 | &cu->objfile->per_bfd->storage_obstack, | |
19800 | actual_name, actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
19801 | } |
19802 | } | |
19803 | xfree (actual_name); | |
19804 | return name; | |
19805 | } | |
19806 | } | |
19807 | } | |
19808 | ||
19809 | return NULL; | |
19810 | } | |
19811 | ||
96408a79 SA |
19812 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
19813 | prefix part in such case. See | |
19814 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
19815 | ||
a121b7c1 | 19816 | static const char * |
96408a79 SA |
19817 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
19818 | { | |
19819 | struct attribute *attr; | |
e6a959d6 | 19820 | const char *base; |
96408a79 SA |
19821 | |
19822 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
19823 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
19824 | return NULL; | |
19825 | ||
7d45c7c3 | 19826 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
19827 | return NULL; |
19828 | ||
19829 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
19830 | if (attr == NULL) | |
19831 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
19832 | if (attr == NULL || DW_STRING (attr) == NULL) | |
19833 | return NULL; | |
19834 | ||
19835 | /* dwarf2_name had to be already called. */ | |
19836 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
19837 | ||
19838 | /* Strip the base name, keep any leading namespaces/classes. */ | |
19839 | base = strrchr (DW_STRING (attr), ':'); | |
19840 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
19841 | return ""; | |
19842 | ||
224c3ddb SM |
19843 | return (char *) obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, |
19844 | DW_STRING (attr), | |
19845 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
19846 | } |
19847 | ||
fdde2d81 | 19848 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 19849 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 19850 | |
0114d602 DJ |
19851 | For example, if we're within the method foo() in the following |
19852 | code: | |
19853 | ||
19854 | namespace N { | |
19855 | class C { | |
19856 | void foo () { | |
19857 | } | |
19858 | }; | |
19859 | } | |
19860 | ||
19861 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 19862 | |
0d5cff50 | 19863 | static const char * |
e142c38c | 19864 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 19865 | { |
0114d602 DJ |
19866 | struct die_info *parent, *spec_die; |
19867 | struct dwarf2_cu *spec_cu; | |
19868 | struct type *parent_type; | |
a121b7c1 | 19869 | const char *retval; |
63d06c5c | 19870 | |
9c37b5ae | 19871 | if (cu->language != language_cplus |
c44af4eb TT |
19872 | && cu->language != language_fortran && cu->language != language_d |
19873 | && cu->language != language_rust) | |
0114d602 DJ |
19874 | return ""; |
19875 | ||
96408a79 SA |
19876 | retval = anonymous_struct_prefix (die, cu); |
19877 | if (retval) | |
19878 | return retval; | |
19879 | ||
0114d602 DJ |
19880 | /* We have to be careful in the presence of DW_AT_specification. |
19881 | For example, with GCC 3.4, given the code | |
19882 | ||
19883 | namespace N { | |
19884 | void foo() { | |
19885 | // Definition of N::foo. | |
19886 | } | |
19887 | } | |
19888 | ||
19889 | then we'll have a tree of DIEs like this: | |
19890 | ||
19891 | 1: DW_TAG_compile_unit | |
19892 | 2: DW_TAG_namespace // N | |
19893 | 3: DW_TAG_subprogram // declaration of N::foo | |
19894 | 4: DW_TAG_subprogram // definition of N::foo | |
19895 | DW_AT_specification // refers to die #3 | |
19896 | ||
19897 | Thus, when processing die #4, we have to pretend that we're in | |
19898 | the context of its DW_AT_specification, namely the contex of die | |
19899 | #3. */ | |
19900 | spec_cu = cu; | |
19901 | spec_die = die_specification (die, &spec_cu); | |
19902 | if (spec_die == NULL) | |
19903 | parent = die->parent; | |
19904 | else | |
63d06c5c | 19905 | { |
0114d602 DJ |
19906 | parent = spec_die->parent; |
19907 | cu = spec_cu; | |
63d06c5c | 19908 | } |
0114d602 DJ |
19909 | |
19910 | if (parent == NULL) | |
19911 | return ""; | |
98bfdba5 PA |
19912 | else if (parent->building_fullname) |
19913 | { | |
19914 | const char *name; | |
19915 | const char *parent_name; | |
19916 | ||
19917 | /* It has been seen on RealView 2.2 built binaries, | |
19918 | DW_TAG_template_type_param types actually _defined_ as | |
19919 | children of the parent class: | |
19920 | ||
19921 | enum E {}; | |
19922 | template class <class Enum> Class{}; | |
19923 | Class<enum E> class_e; | |
19924 | ||
19925 | 1: DW_TAG_class_type (Class) | |
19926 | 2: DW_TAG_enumeration_type (E) | |
19927 | 3: DW_TAG_enumerator (enum1:0) | |
19928 | 3: DW_TAG_enumerator (enum2:1) | |
19929 | ... | |
19930 | 2: DW_TAG_template_type_param | |
19931 | DW_AT_type DW_FORM_ref_udata (E) | |
19932 | ||
19933 | Besides being broken debug info, it can put GDB into an | |
19934 | infinite loop. Consider: | |
19935 | ||
19936 | When we're building the full name for Class<E>, we'll start | |
19937 | at Class, and go look over its template type parameters, | |
19938 | finding E. We'll then try to build the full name of E, and | |
19939 | reach here. We're now trying to build the full name of E, | |
19940 | and look over the parent DIE for containing scope. In the | |
19941 | broken case, if we followed the parent DIE of E, we'd again | |
19942 | find Class, and once again go look at its template type | |
19943 | arguments, etc., etc. Simply don't consider such parent die | |
19944 | as source-level parent of this die (it can't be, the language | |
19945 | doesn't allow it), and break the loop here. */ | |
19946 | name = dwarf2_name (die, cu); | |
19947 | parent_name = dwarf2_name (parent, cu); | |
19948 | complaint (&symfile_complaints, | |
19949 | _("template param type '%s' defined within parent '%s'"), | |
19950 | name ? name : "<unknown>", | |
19951 | parent_name ? parent_name : "<unknown>"); | |
19952 | return ""; | |
19953 | } | |
63d06c5c | 19954 | else |
0114d602 DJ |
19955 | switch (parent->tag) |
19956 | { | |
63d06c5c | 19957 | case DW_TAG_namespace: |
0114d602 | 19958 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
19959 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
19960 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
19961 | Work around this problem here. */ | |
19962 | if (cu->language == language_cplus | |
19963 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
19964 | return ""; | |
0114d602 DJ |
19965 | /* We give a name to even anonymous namespaces. */ |
19966 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 19967 | case DW_TAG_class_type: |
680b30c7 | 19968 | case DW_TAG_interface_type: |
63d06c5c | 19969 | case DW_TAG_structure_type: |
0114d602 | 19970 | case DW_TAG_union_type: |
f55ee35c | 19971 | case DW_TAG_module: |
0114d602 DJ |
19972 | parent_type = read_type_die (parent, cu); |
19973 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
19974 | return TYPE_TAG_NAME (parent_type); | |
19975 | else | |
19976 | /* An anonymous structure is only allowed non-static data | |
19977 | members; no typedefs, no member functions, et cetera. | |
19978 | So it does not need a prefix. */ | |
19979 | return ""; | |
abc72ce4 | 19980 | case DW_TAG_compile_unit: |
95554aad | 19981 | case DW_TAG_partial_unit: |
abc72ce4 DE |
19982 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
19983 | if (cu->language == language_cplus | |
8b70b953 | 19984 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
19985 | && die->child != NULL |
19986 | && (die->tag == DW_TAG_class_type | |
19987 | || die->tag == DW_TAG_structure_type | |
19988 | || die->tag == DW_TAG_union_type)) | |
19989 | { | |
19990 | char *name = guess_full_die_structure_name (die, cu); | |
19991 | if (name != NULL) | |
19992 | return name; | |
19993 | } | |
19994 | return ""; | |
3d567982 TT |
19995 | case DW_TAG_enumeration_type: |
19996 | parent_type = read_type_die (parent, cu); | |
19997 | if (TYPE_DECLARED_CLASS (parent_type)) | |
19998 | { | |
19999 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
20000 | return TYPE_TAG_NAME (parent_type); | |
20001 | return ""; | |
20002 | } | |
20003 | /* Fall through. */ | |
63d06c5c | 20004 | default: |
8176b9b8 | 20005 | return determine_prefix (parent, cu); |
63d06c5c | 20006 | } |
63d06c5c DC |
20007 | } |
20008 | ||
3e43a32a MS |
20009 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
20010 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
20011 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
20012 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
20013 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 20014 | |
f55ee35c | 20015 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
20016 | |
20017 | static char * | |
f55ee35c JK |
20018 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
20019 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 20020 | { |
f55ee35c | 20021 | const char *lead = ""; |
5c315b68 | 20022 | const char *sep; |
63d06c5c | 20023 | |
3e43a32a MS |
20024 | if (suffix == NULL || suffix[0] == '\0' |
20025 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 20026 | sep = ""; |
45280282 IB |
20027 | else if (cu->language == language_d) |
20028 | { | |
20029 | /* For D, the 'main' function could be defined in any module, but it | |
20030 | should never be prefixed. */ | |
20031 | if (strcmp (suffix, "D main") == 0) | |
20032 | { | |
20033 | prefix = ""; | |
20034 | sep = ""; | |
20035 | } | |
20036 | else | |
20037 | sep = "."; | |
20038 | } | |
f55ee35c JK |
20039 | else if (cu->language == language_fortran && physname) |
20040 | { | |
20041 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
20042 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
20043 | ||
20044 | lead = "__"; | |
20045 | sep = "_MOD_"; | |
20046 | } | |
987504bb JJ |
20047 | else |
20048 | sep = "::"; | |
63d06c5c | 20049 | |
6dd47d34 DE |
20050 | if (prefix == NULL) |
20051 | prefix = ""; | |
20052 | if (suffix == NULL) | |
20053 | suffix = ""; | |
20054 | ||
987504bb JJ |
20055 | if (obs == NULL) |
20056 | { | |
3e43a32a | 20057 | char *retval |
224c3ddb SM |
20058 | = ((char *) |
20059 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 20060 | |
f55ee35c JK |
20061 | strcpy (retval, lead); |
20062 | strcat (retval, prefix); | |
6dd47d34 DE |
20063 | strcat (retval, sep); |
20064 | strcat (retval, suffix); | |
63d06c5c DC |
20065 | return retval; |
20066 | } | |
987504bb JJ |
20067 | else |
20068 | { | |
20069 | /* We have an obstack. */ | |
f55ee35c | 20070 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 20071 | } |
63d06c5c DC |
20072 | } |
20073 | ||
c906108c SS |
20074 | /* Return sibling of die, NULL if no sibling. */ |
20075 | ||
f9aca02d | 20076 | static struct die_info * |
fba45db2 | 20077 | sibling_die (struct die_info *die) |
c906108c | 20078 | { |
639d11d3 | 20079 | return die->sibling; |
c906108c SS |
20080 | } |
20081 | ||
71c25dea TT |
20082 | /* Get name of a die, return NULL if not found. */ |
20083 | ||
15d034d0 TT |
20084 | static const char * |
20085 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
20086 | struct obstack *obstack) |
20087 | { | |
20088 | if (name && cu->language == language_cplus) | |
20089 | { | |
2f408ecb | 20090 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 20091 | |
2f408ecb | 20092 | if (!canon_name.empty ()) |
71c25dea | 20093 | { |
2f408ecb PA |
20094 | if (canon_name != name) |
20095 | name = (const char *) obstack_copy0 (obstack, | |
20096 | canon_name.c_str (), | |
20097 | canon_name.length ()); | |
71c25dea TT |
20098 | } |
20099 | } | |
20100 | ||
20101 | return name; | |
c906108c SS |
20102 | } |
20103 | ||
96553a0c DE |
20104 | /* Get name of a die, return NULL if not found. |
20105 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 20106 | |
15d034d0 | 20107 | static const char * |
e142c38c | 20108 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
20109 | { |
20110 | struct attribute *attr; | |
20111 | ||
e142c38c | 20112 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 20113 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 20114 | && die->tag != DW_TAG_namespace |
53832f31 TT |
20115 | && die->tag != DW_TAG_class_type |
20116 | && die->tag != DW_TAG_interface_type | |
20117 | && die->tag != DW_TAG_structure_type | |
20118 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
20119 | return NULL; |
20120 | ||
20121 | switch (die->tag) | |
20122 | { | |
20123 | case DW_TAG_compile_unit: | |
95554aad | 20124 | case DW_TAG_partial_unit: |
71c25dea TT |
20125 | /* Compilation units have a DW_AT_name that is a filename, not |
20126 | a source language identifier. */ | |
20127 | case DW_TAG_enumeration_type: | |
20128 | case DW_TAG_enumerator: | |
20129 | /* These tags always have simple identifiers already; no need | |
20130 | to canonicalize them. */ | |
20131 | return DW_STRING (attr); | |
907af001 | 20132 | |
96553a0c DE |
20133 | case DW_TAG_namespace: |
20134 | if (attr != NULL && DW_STRING (attr) != NULL) | |
20135 | return DW_STRING (attr); | |
20136 | return CP_ANONYMOUS_NAMESPACE_STR; | |
20137 | ||
907af001 UW |
20138 | case DW_TAG_class_type: |
20139 | case DW_TAG_interface_type: | |
20140 | case DW_TAG_structure_type: | |
20141 | case DW_TAG_union_type: | |
20142 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
20143 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
20144 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
20145 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 20146 | if (attr && DW_STRING (attr) |
61012eef GB |
20147 | && (startswith (DW_STRING (attr), "._") |
20148 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 20149 | return NULL; |
53832f31 TT |
20150 | |
20151 | /* GCC might emit a nameless typedef that has a linkage name. See | |
20152 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
20153 | if (!attr || DW_STRING (attr) == NULL) | |
20154 | { | |
df5c6c50 | 20155 | char *demangled = NULL; |
53832f31 TT |
20156 | |
20157 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
20158 | if (attr == NULL) | |
20159 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
20160 | ||
20161 | if (attr == NULL || DW_STRING (attr) == NULL) | |
20162 | return NULL; | |
20163 | ||
df5c6c50 JK |
20164 | /* Avoid demangling DW_STRING (attr) the second time on a second |
20165 | call for the same DIE. */ | |
20166 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 20167 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
20168 | |
20169 | if (demangled) | |
20170 | { | |
e6a959d6 | 20171 | const char *base; |
96408a79 | 20172 | |
53832f31 | 20173 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 20174 | DW_STRING (attr) |
224c3ddb SM |
20175 | = ((const char *) |
20176 | obstack_copy0 (&cu->objfile->per_bfd->storage_obstack, | |
20177 | demangled, strlen (demangled))); | |
53832f31 TT |
20178 | DW_STRING_IS_CANONICAL (attr) = 1; |
20179 | xfree (demangled); | |
96408a79 SA |
20180 | |
20181 | /* Strip any leading namespaces/classes, keep only the base name. | |
20182 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
20183 | base = strrchr (DW_STRING (attr), ':'); | |
20184 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
20185 | return &base[1]; | |
20186 | else | |
20187 | return DW_STRING (attr); | |
53832f31 TT |
20188 | } |
20189 | } | |
907af001 UW |
20190 | break; |
20191 | ||
71c25dea | 20192 | default: |
907af001 UW |
20193 | break; |
20194 | } | |
20195 | ||
20196 | if (!DW_STRING_IS_CANONICAL (attr)) | |
20197 | { | |
20198 | DW_STRING (attr) | |
20199 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
34a68019 | 20200 | &cu->objfile->per_bfd->storage_obstack); |
907af001 | 20201 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 20202 | } |
907af001 | 20203 | return DW_STRING (attr); |
9219021c DC |
20204 | } |
20205 | ||
20206 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
20207 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
20208 | containing the return value on output. */ | |
9219021c DC |
20209 | |
20210 | static struct die_info * | |
f2f0e013 | 20211 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
20212 | { |
20213 | struct attribute *attr; | |
9219021c | 20214 | |
f2f0e013 | 20215 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
20216 | if (attr == NULL) |
20217 | return NULL; | |
20218 | ||
f2f0e013 | 20219 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
20220 | } |
20221 | ||
c906108c SS |
20222 | /* Convert a DIE tag into its string name. */ |
20223 | ||
f39c6ffd | 20224 | static const char * |
aa1ee363 | 20225 | dwarf_tag_name (unsigned tag) |
c906108c | 20226 | { |
f39c6ffd TT |
20227 | const char *name = get_DW_TAG_name (tag); |
20228 | ||
20229 | if (name == NULL) | |
20230 | return "DW_TAG_<unknown>"; | |
20231 | ||
20232 | return name; | |
c906108c SS |
20233 | } |
20234 | ||
20235 | /* Convert a DWARF attribute code into its string name. */ | |
20236 | ||
f39c6ffd | 20237 | static const char * |
aa1ee363 | 20238 | dwarf_attr_name (unsigned attr) |
c906108c | 20239 | { |
f39c6ffd TT |
20240 | const char *name; |
20241 | ||
c764a876 | 20242 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
20243 | if (attr == DW_AT_MIPS_fde) |
20244 | return "DW_AT_MIPS_fde"; | |
20245 | #else | |
20246 | if (attr == DW_AT_HP_block_index) | |
20247 | return "DW_AT_HP_block_index"; | |
c764a876 | 20248 | #endif |
f39c6ffd TT |
20249 | |
20250 | name = get_DW_AT_name (attr); | |
20251 | ||
20252 | if (name == NULL) | |
20253 | return "DW_AT_<unknown>"; | |
20254 | ||
20255 | return name; | |
c906108c SS |
20256 | } |
20257 | ||
20258 | /* Convert a DWARF value form code into its string name. */ | |
20259 | ||
f39c6ffd | 20260 | static const char * |
aa1ee363 | 20261 | dwarf_form_name (unsigned form) |
c906108c | 20262 | { |
f39c6ffd TT |
20263 | const char *name = get_DW_FORM_name (form); |
20264 | ||
20265 | if (name == NULL) | |
20266 | return "DW_FORM_<unknown>"; | |
20267 | ||
20268 | return name; | |
c906108c SS |
20269 | } |
20270 | ||
a121b7c1 | 20271 | static const char * |
fba45db2 | 20272 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
20273 | { |
20274 | if (mybool) | |
20275 | return "TRUE"; | |
20276 | else | |
20277 | return "FALSE"; | |
20278 | } | |
20279 | ||
20280 | /* Convert a DWARF type code into its string name. */ | |
20281 | ||
f39c6ffd | 20282 | static const char * |
aa1ee363 | 20283 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 20284 | { |
f39c6ffd | 20285 | const char *name = get_DW_ATE_name (enc); |
c906108c | 20286 | |
f39c6ffd TT |
20287 | if (name == NULL) |
20288 | return "DW_ATE_<unknown>"; | |
c906108c | 20289 | |
f39c6ffd | 20290 | return name; |
c906108c | 20291 | } |
c906108c | 20292 | |
f9aca02d | 20293 | static void |
d97bc12b | 20294 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
20295 | { |
20296 | unsigned int i; | |
20297 | ||
d97bc12b DE |
20298 | print_spaces (indent, f); |
20299 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
9c541725 PA |
20300 | dwarf_tag_name (die->tag), die->abbrev, |
20301 | to_underlying (die->sect_off)); | |
d97bc12b DE |
20302 | |
20303 | if (die->parent != NULL) | |
20304 | { | |
20305 | print_spaces (indent, f); | |
20306 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
9c541725 | 20307 | to_underlying (die->parent->sect_off)); |
d97bc12b DE |
20308 | } |
20309 | ||
20310 | print_spaces (indent, f); | |
20311 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 20312 | dwarf_bool_name (die->child != NULL)); |
c906108c | 20313 | |
d97bc12b DE |
20314 | print_spaces (indent, f); |
20315 | fprintf_unfiltered (f, " attributes:\n"); | |
20316 | ||
c906108c SS |
20317 | for (i = 0; i < die->num_attrs; ++i) |
20318 | { | |
d97bc12b DE |
20319 | print_spaces (indent, f); |
20320 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
20321 | dwarf_attr_name (die->attrs[i].name), |
20322 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 20323 | |
c906108c SS |
20324 | switch (die->attrs[i].form) |
20325 | { | |
c906108c | 20326 | case DW_FORM_addr: |
3019eac3 | 20327 | case DW_FORM_GNU_addr_index: |
d97bc12b | 20328 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 20329 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
20330 | break; |
20331 | case DW_FORM_block2: | |
20332 | case DW_FORM_block4: | |
20333 | case DW_FORM_block: | |
20334 | case DW_FORM_block1: | |
56eb65bd SP |
20335 | fprintf_unfiltered (f, "block: size %s", |
20336 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 20337 | break; |
2dc7f7b3 | 20338 | case DW_FORM_exprloc: |
56eb65bd SP |
20339 | fprintf_unfiltered (f, "expression: size %s", |
20340 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 20341 | break; |
0224619f JK |
20342 | case DW_FORM_data16: |
20343 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
20344 | break; | |
4568ecf9 DE |
20345 | case DW_FORM_ref_addr: |
20346 | fprintf_unfiltered (f, "ref address: "); | |
20347 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
20348 | break; | |
36586728 TT |
20349 | case DW_FORM_GNU_ref_alt: |
20350 | fprintf_unfiltered (f, "alt ref address: "); | |
20351 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
20352 | break; | |
10b3939b DJ |
20353 | case DW_FORM_ref1: |
20354 | case DW_FORM_ref2: | |
20355 | case DW_FORM_ref4: | |
4568ecf9 DE |
20356 | case DW_FORM_ref8: |
20357 | case DW_FORM_ref_udata: | |
d97bc12b | 20358 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 20359 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 20360 | break; |
c906108c SS |
20361 | case DW_FORM_data1: |
20362 | case DW_FORM_data2: | |
20363 | case DW_FORM_data4: | |
ce5d95e1 | 20364 | case DW_FORM_data8: |
c906108c SS |
20365 | case DW_FORM_udata: |
20366 | case DW_FORM_sdata: | |
43bbcdc2 PH |
20367 | fprintf_unfiltered (f, "constant: %s", |
20368 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 20369 | break; |
2dc7f7b3 TT |
20370 | case DW_FORM_sec_offset: |
20371 | fprintf_unfiltered (f, "section offset: %s", | |
20372 | pulongest (DW_UNSND (&die->attrs[i]))); | |
20373 | break; | |
55f1336d | 20374 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
20375 | fprintf_unfiltered (f, "signature: %s", |
20376 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 20377 | break; |
c906108c | 20378 | case DW_FORM_string: |
4bdf3d34 | 20379 | case DW_FORM_strp: |
43988095 | 20380 | case DW_FORM_line_strp: |
3019eac3 | 20381 | case DW_FORM_GNU_str_index: |
36586728 | 20382 | case DW_FORM_GNU_strp_alt: |
8285870a | 20383 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 20384 | DW_STRING (&die->attrs[i]) |
8285870a JK |
20385 | ? DW_STRING (&die->attrs[i]) : "", |
20386 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
20387 | break; |
20388 | case DW_FORM_flag: | |
20389 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 20390 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 20391 | else |
d97bc12b | 20392 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 20393 | break; |
2dc7f7b3 TT |
20394 | case DW_FORM_flag_present: |
20395 | fprintf_unfiltered (f, "flag: TRUE"); | |
20396 | break; | |
a8329558 | 20397 | case DW_FORM_indirect: |
0963b4bd MS |
20398 | /* The reader will have reduced the indirect form to |
20399 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
20400 | fprintf_unfiltered (f, |
20401 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 20402 | break; |
c906108c | 20403 | default: |
d97bc12b | 20404 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 20405 | die->attrs[i].form); |
d97bc12b | 20406 | break; |
c906108c | 20407 | } |
d97bc12b | 20408 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
20409 | } |
20410 | } | |
20411 | ||
f9aca02d | 20412 | static void |
d97bc12b | 20413 | dump_die_for_error (struct die_info *die) |
c906108c | 20414 | { |
d97bc12b DE |
20415 | dump_die_shallow (gdb_stderr, 0, die); |
20416 | } | |
20417 | ||
20418 | static void | |
20419 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
20420 | { | |
20421 | int indent = level * 4; | |
20422 | ||
20423 | gdb_assert (die != NULL); | |
20424 | ||
20425 | if (level >= max_level) | |
20426 | return; | |
20427 | ||
20428 | dump_die_shallow (f, indent, die); | |
20429 | ||
20430 | if (die->child != NULL) | |
c906108c | 20431 | { |
d97bc12b DE |
20432 | print_spaces (indent, f); |
20433 | fprintf_unfiltered (f, " Children:"); | |
20434 | if (level + 1 < max_level) | |
20435 | { | |
20436 | fprintf_unfiltered (f, "\n"); | |
20437 | dump_die_1 (f, level + 1, max_level, die->child); | |
20438 | } | |
20439 | else | |
20440 | { | |
3e43a32a MS |
20441 | fprintf_unfiltered (f, |
20442 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
20443 | } |
20444 | } | |
20445 | ||
20446 | if (die->sibling != NULL && level > 0) | |
20447 | { | |
20448 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
20449 | } |
20450 | } | |
20451 | ||
d97bc12b DE |
20452 | /* This is called from the pdie macro in gdbinit.in. |
20453 | It's not static so gcc will keep a copy callable from gdb. */ | |
20454 | ||
20455 | void | |
20456 | dump_die (struct die_info *die, int max_level) | |
20457 | { | |
20458 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
20459 | } | |
20460 | ||
f9aca02d | 20461 | static void |
51545339 | 20462 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20463 | { |
51545339 | 20464 | void **slot; |
c906108c | 20465 | |
9c541725 PA |
20466 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
20467 | to_underlying (die->sect_off), | |
b64f50a1 | 20468 | INSERT); |
51545339 DJ |
20469 | |
20470 | *slot = die; | |
c906108c SS |
20471 | } |
20472 | ||
b64f50a1 JK |
20473 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
20474 | required kind. */ | |
20475 | ||
20476 | static sect_offset | |
ff39bb5e | 20477 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 20478 | { |
7771576e | 20479 | if (attr_form_is_ref (attr)) |
9c541725 | 20480 | return (sect_offset) DW_UNSND (attr); |
93311388 DE |
20481 | |
20482 | complaint (&symfile_complaints, | |
20483 | _("unsupported die ref attribute form: '%s'"), | |
20484 | dwarf_form_name (attr->form)); | |
9c541725 | 20485 | return {}; |
c906108c SS |
20486 | } |
20487 | ||
43bbcdc2 PH |
20488 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
20489 | * the value held by the attribute is not constant. */ | |
a02abb62 | 20490 | |
43bbcdc2 | 20491 | static LONGEST |
ff39bb5e | 20492 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 JB |
20493 | { |
20494 | if (attr->form == DW_FORM_sdata) | |
20495 | return DW_SND (attr); | |
20496 | else if (attr->form == DW_FORM_udata | |
20497 | || attr->form == DW_FORM_data1 | |
20498 | || attr->form == DW_FORM_data2 | |
20499 | || attr->form == DW_FORM_data4 | |
20500 | || attr->form == DW_FORM_data8) | |
20501 | return DW_UNSND (attr); | |
20502 | else | |
20503 | { | |
0224619f | 20504 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
3e43a32a MS |
20505 | complaint (&symfile_complaints, |
20506 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
20507 | dwarf_form_name (attr->form)); |
20508 | return default_value; | |
20509 | } | |
20510 | } | |
20511 | ||
348e048f DE |
20512 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
20513 | On entry *REF_CU is the CU of SRC_DIE. | |
20514 | On exit *REF_CU is the CU of the result. */ | |
20515 | ||
20516 | static struct die_info * | |
ff39bb5e | 20517 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
20518 | struct dwarf2_cu **ref_cu) |
20519 | { | |
20520 | struct die_info *die; | |
20521 | ||
7771576e | 20522 | if (attr_form_is_ref (attr)) |
348e048f | 20523 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 20524 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
20525 | die = follow_die_sig (src_die, attr, ref_cu); |
20526 | else | |
20527 | { | |
20528 | dump_die_for_error (src_die); | |
20529 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 20530 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
20531 | } |
20532 | ||
20533 | return die; | |
03dd20cc DJ |
20534 | } |
20535 | ||
5c631832 | 20536 | /* Follow reference OFFSET. |
673bfd45 DE |
20537 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
20538 | On exit *REF_CU is the CU of the result. | |
20539 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 20540 | |
f9aca02d | 20541 | static struct die_info * |
9c541725 | 20542 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 20543 | struct dwarf2_cu **ref_cu) |
c906108c | 20544 | { |
10b3939b | 20545 | struct die_info temp_die; |
f2f0e013 | 20546 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 20547 | |
348e048f DE |
20548 | gdb_assert (cu->per_cu != NULL); |
20549 | ||
98bfdba5 PA |
20550 | target_cu = cu; |
20551 | ||
3019eac3 | 20552 | if (cu->per_cu->is_debug_types) |
348e048f DE |
20553 | { |
20554 | /* .debug_types CUs cannot reference anything outside their CU. | |
20555 | If they need to, they have to reference a signatured type via | |
55f1336d | 20556 | DW_FORM_ref_sig8. */ |
9c541725 | 20557 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 20558 | return NULL; |
348e048f | 20559 | } |
36586728 | 20560 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 20561 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
20562 | { |
20563 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 20564 | |
9c541725 | 20565 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
36586728 | 20566 | cu->objfile); |
03dd20cc DJ |
20567 | |
20568 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
20569 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
20570 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 20571 | |
10b3939b DJ |
20572 | target_cu = per_cu->cu; |
20573 | } | |
98bfdba5 PA |
20574 | else if (cu->dies == NULL) |
20575 | { | |
20576 | /* We're loading full DIEs during partial symbol reading. */ | |
20577 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 20578 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 20579 | } |
c906108c | 20580 | |
f2f0e013 | 20581 | *ref_cu = target_cu; |
9c541725 | 20582 | temp_die.sect_off = sect_off; |
9a3c8263 | 20583 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
20584 | &temp_die, |
20585 | to_underlying (sect_off)); | |
5c631832 | 20586 | } |
10b3939b | 20587 | |
5c631832 JK |
20588 | /* Follow reference attribute ATTR of SRC_DIE. |
20589 | On entry *REF_CU is the CU of SRC_DIE. | |
20590 | On exit *REF_CU is the CU of the result. */ | |
20591 | ||
20592 | static struct die_info * | |
ff39bb5e | 20593 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
20594 | struct dwarf2_cu **ref_cu) |
20595 | { | |
9c541725 | 20596 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
20597 | struct dwarf2_cu *cu = *ref_cu; |
20598 | struct die_info *die; | |
20599 | ||
9c541725 | 20600 | die = follow_die_offset (sect_off, |
36586728 TT |
20601 | (attr->form == DW_FORM_GNU_ref_alt |
20602 | || cu->per_cu->is_dwz), | |
20603 | ref_cu); | |
5c631832 JK |
20604 | if (!die) |
20605 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
20606 | "at 0x%x [in module %s]"), | |
9c541725 | 20607 | to_underlying (sect_off), to_underlying (src_die->sect_off), |
4262abfb | 20608 | objfile_name (cu->objfile)); |
348e048f | 20609 | |
5c631832 JK |
20610 | return die; |
20611 | } | |
20612 | ||
9c541725 | 20613 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b JK |
20614 | Returned value is intended for DW_OP_call*. Returned |
20615 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
20616 | |
20617 | struct dwarf2_locexpr_baton | |
9c541725 | 20618 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
20619 | struct dwarf2_per_cu_data *per_cu, |
20620 | CORE_ADDR (*get_frame_pc) (void *baton), | |
20621 | void *baton) | |
5c631832 | 20622 | { |
918dd910 | 20623 | struct dwarf2_cu *cu; |
5c631832 JK |
20624 | struct die_info *die; |
20625 | struct attribute *attr; | |
20626 | struct dwarf2_locexpr_baton retval; | |
20627 | ||
8cf6f0b1 TT |
20628 | dw2_setup (per_cu->objfile); |
20629 | ||
918dd910 JK |
20630 | if (per_cu->cu == NULL) |
20631 | load_cu (per_cu); | |
20632 | cu = per_cu->cu; | |
cc12ce38 DE |
20633 | if (cu == NULL) |
20634 | { | |
20635 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
20636 | Instead just throw an error, not much else we can do. */ | |
20637 | error (_("Dwarf Error: Dummy CU at 0x%x referenced in module %s"), | |
9c541725 | 20638 | to_underlying (sect_off), objfile_name (per_cu->objfile)); |
cc12ce38 | 20639 | } |
918dd910 | 20640 | |
9c541725 | 20641 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 JK |
20642 | if (!die) |
20643 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
9c541725 | 20644 | to_underlying (sect_off), objfile_name (per_cu->objfile)); |
5c631832 JK |
20645 | |
20646 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
20647 | if (!attr) | |
20648 | { | |
e103e986 JK |
20649 | /* DWARF: "If there is no such attribute, then there is no effect.". |
20650 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 20651 | |
e103e986 | 20652 | retval.data = NULL; |
5c631832 JK |
20653 | retval.size = 0; |
20654 | } | |
8cf6f0b1 TT |
20655 | else if (attr_form_is_section_offset (attr)) |
20656 | { | |
20657 | struct dwarf2_loclist_baton loclist_baton; | |
20658 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
20659 | size_t size; | |
20660 | ||
20661 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
20662 | ||
20663 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
20664 | &size, pc); | |
20665 | retval.size = size; | |
20666 | } | |
5c631832 JK |
20667 | else |
20668 | { | |
20669 | if (!attr_form_is_block (attr)) | |
20670 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
20671 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
9c541725 | 20672 | to_underlying (sect_off), objfile_name (per_cu->objfile)); |
5c631832 JK |
20673 | |
20674 | retval.data = DW_BLOCK (attr)->data; | |
20675 | retval.size = DW_BLOCK (attr)->size; | |
20676 | } | |
20677 | retval.per_cu = cu->per_cu; | |
918dd910 | 20678 | |
918dd910 JK |
20679 | age_cached_comp_units (); |
20680 | ||
5c631832 | 20681 | return retval; |
348e048f DE |
20682 | } |
20683 | ||
8b9737bf TT |
20684 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
20685 | offset. */ | |
20686 | ||
20687 | struct dwarf2_locexpr_baton | |
20688 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
20689 | struct dwarf2_per_cu_data *per_cu, | |
20690 | CORE_ADDR (*get_frame_pc) (void *baton), | |
20691 | void *baton) | |
20692 | { | |
9c541725 | 20693 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 20694 | |
9c541725 | 20695 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
20696 | } |
20697 | ||
b6807d98 TT |
20698 | /* Write a constant of a given type as target-ordered bytes into |
20699 | OBSTACK. */ | |
20700 | ||
20701 | static const gdb_byte * | |
20702 | write_constant_as_bytes (struct obstack *obstack, | |
20703 | enum bfd_endian byte_order, | |
20704 | struct type *type, | |
20705 | ULONGEST value, | |
20706 | LONGEST *len) | |
20707 | { | |
20708 | gdb_byte *result; | |
20709 | ||
20710 | *len = TYPE_LENGTH (type); | |
224c3ddb | 20711 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
20712 | store_unsigned_integer (result, *len, byte_order, value); |
20713 | ||
20714 | return result; | |
20715 | } | |
20716 | ||
20717 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
20718 | pointer to the constant bytes and set LEN to the length of the | |
20719 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
20720 | does not have a DW_AT_const_value, return NULL. */ | |
20721 | ||
20722 | const gdb_byte * | |
9c541725 | 20723 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
20724 | struct dwarf2_per_cu_data *per_cu, |
20725 | struct obstack *obstack, | |
20726 | LONGEST *len) | |
20727 | { | |
20728 | struct dwarf2_cu *cu; | |
20729 | struct die_info *die; | |
20730 | struct attribute *attr; | |
20731 | const gdb_byte *result = NULL; | |
20732 | struct type *type; | |
20733 | LONGEST value; | |
20734 | enum bfd_endian byte_order; | |
20735 | ||
20736 | dw2_setup (per_cu->objfile); | |
20737 | ||
20738 | if (per_cu->cu == NULL) | |
20739 | load_cu (per_cu); | |
20740 | cu = per_cu->cu; | |
cc12ce38 DE |
20741 | if (cu == NULL) |
20742 | { | |
20743 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
20744 | Instead just throw an error, not much else we can do. */ | |
20745 | error (_("Dwarf Error: Dummy CU at 0x%x referenced in module %s"), | |
9c541725 | 20746 | to_underlying (sect_off), objfile_name (per_cu->objfile)); |
cc12ce38 | 20747 | } |
b6807d98 | 20748 | |
9c541725 | 20749 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 TT |
20750 | if (!die) |
20751 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
9c541725 | 20752 | to_underlying (sect_off), objfile_name (per_cu->objfile)); |
b6807d98 TT |
20753 | |
20754 | ||
20755 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
20756 | if (attr == NULL) | |
20757 | return NULL; | |
20758 | ||
20759 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
20760 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
20761 | ||
20762 | switch (attr->form) | |
20763 | { | |
20764 | case DW_FORM_addr: | |
20765 | case DW_FORM_GNU_addr_index: | |
20766 | { | |
20767 | gdb_byte *tem; | |
20768 | ||
20769 | *len = cu->header.addr_size; | |
224c3ddb | 20770 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
20771 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
20772 | result = tem; | |
20773 | } | |
20774 | break; | |
20775 | case DW_FORM_string: | |
20776 | case DW_FORM_strp: | |
20777 | case DW_FORM_GNU_str_index: | |
20778 | case DW_FORM_GNU_strp_alt: | |
20779 | /* DW_STRING is already allocated on the objfile obstack, point | |
20780 | directly to it. */ | |
20781 | result = (const gdb_byte *) DW_STRING (attr); | |
20782 | *len = strlen (DW_STRING (attr)); | |
20783 | break; | |
20784 | case DW_FORM_block1: | |
20785 | case DW_FORM_block2: | |
20786 | case DW_FORM_block4: | |
20787 | case DW_FORM_block: | |
20788 | case DW_FORM_exprloc: | |
0224619f | 20789 | case DW_FORM_data16: |
b6807d98 TT |
20790 | result = DW_BLOCK (attr)->data; |
20791 | *len = DW_BLOCK (attr)->size; | |
20792 | break; | |
20793 | ||
20794 | /* The DW_AT_const_value attributes are supposed to carry the | |
20795 | symbol's value "represented as it would be on the target | |
20796 | architecture." By the time we get here, it's already been | |
20797 | converted to host endianness, so we just need to sign- or | |
20798 | zero-extend it as appropriate. */ | |
20799 | case DW_FORM_data1: | |
20800 | type = die_type (die, cu); | |
20801 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
20802 | if (result == NULL) | |
20803 | result = write_constant_as_bytes (obstack, byte_order, | |
20804 | type, value, len); | |
20805 | break; | |
20806 | case DW_FORM_data2: | |
20807 | type = die_type (die, cu); | |
20808 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
20809 | if (result == NULL) | |
20810 | result = write_constant_as_bytes (obstack, byte_order, | |
20811 | type, value, len); | |
20812 | break; | |
20813 | case DW_FORM_data4: | |
20814 | type = die_type (die, cu); | |
20815 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
20816 | if (result == NULL) | |
20817 | result = write_constant_as_bytes (obstack, byte_order, | |
20818 | type, value, len); | |
20819 | break; | |
20820 | case DW_FORM_data8: | |
20821 | type = die_type (die, cu); | |
20822 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
20823 | if (result == NULL) | |
20824 | result = write_constant_as_bytes (obstack, byte_order, | |
20825 | type, value, len); | |
20826 | break; | |
20827 | ||
20828 | case DW_FORM_sdata: | |
20829 | type = die_type (die, cu); | |
20830 | result = write_constant_as_bytes (obstack, byte_order, | |
20831 | type, DW_SND (attr), len); | |
20832 | break; | |
20833 | ||
20834 | case DW_FORM_udata: | |
20835 | type = die_type (die, cu); | |
20836 | result = write_constant_as_bytes (obstack, byte_order, | |
20837 | type, DW_UNSND (attr), len); | |
20838 | break; | |
20839 | ||
20840 | default: | |
20841 | complaint (&symfile_complaints, | |
20842 | _("unsupported const value attribute form: '%s'"), | |
20843 | dwarf_form_name (attr->form)); | |
20844 | break; | |
20845 | } | |
20846 | ||
20847 | return result; | |
20848 | } | |
20849 | ||
7942e96e AA |
20850 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
20851 | valid type for this die is found. */ | |
20852 | ||
20853 | struct type * | |
9c541725 | 20854 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
20855 | struct dwarf2_per_cu_data *per_cu) |
20856 | { | |
20857 | struct dwarf2_cu *cu; | |
20858 | struct die_info *die; | |
20859 | ||
20860 | dw2_setup (per_cu->objfile); | |
20861 | ||
20862 | if (per_cu->cu == NULL) | |
20863 | load_cu (per_cu); | |
20864 | cu = per_cu->cu; | |
20865 | if (!cu) | |
20866 | return NULL; | |
20867 | ||
9c541725 | 20868 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
20869 | if (!die) |
20870 | return NULL; | |
20871 | ||
20872 | return die_type (die, cu); | |
20873 | } | |
20874 | ||
8a9b8146 TT |
20875 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
20876 | PER_CU. */ | |
20877 | ||
20878 | struct type * | |
b64f50a1 | 20879 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
20880 | struct dwarf2_per_cu_data *per_cu) |
20881 | { | |
8a9b8146 | 20882 | dw2_setup (per_cu->objfile); |
b64f50a1 | 20883 | |
9c541725 | 20884 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 20885 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
20886 | } |
20887 | ||
ac9ec31b | 20888 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 20889 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
20890 | On exit *REF_CU is the CU of the result. |
20891 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
20892 | |
20893 | static struct die_info * | |
ac9ec31b DE |
20894 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
20895 | struct dwarf2_cu **ref_cu) | |
348e048f | 20896 | { |
348e048f | 20897 | struct die_info temp_die; |
348e048f DE |
20898 | struct dwarf2_cu *sig_cu; |
20899 | struct die_info *die; | |
20900 | ||
ac9ec31b DE |
20901 | /* While it might be nice to assert sig_type->type == NULL here, |
20902 | we can get here for DW_AT_imported_declaration where we need | |
20903 | the DIE not the type. */ | |
348e048f DE |
20904 | |
20905 | /* If necessary, add it to the queue and load its DIEs. */ | |
20906 | ||
95554aad | 20907 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 20908 | read_signatured_type (sig_type); |
348e048f | 20909 | |
348e048f | 20910 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 20911 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
20912 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
20913 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 20914 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 20915 | to_underlying (temp_die.sect_off)); |
348e048f DE |
20916 | if (die) |
20917 | { | |
796a7ff8 DE |
20918 | /* For .gdb_index version 7 keep track of included TUs. |
20919 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
20920 | if (dwarf2_per_objfile->index_table != NULL | |
20921 | && dwarf2_per_objfile->index_table->version <= 7) | |
20922 | { | |
20923 | VEC_safe_push (dwarf2_per_cu_ptr, | |
20924 | (*ref_cu)->per_cu->imported_symtabs, | |
20925 | sig_cu->per_cu); | |
20926 | } | |
20927 | ||
348e048f DE |
20928 | *ref_cu = sig_cu; |
20929 | return die; | |
20930 | } | |
20931 | ||
ac9ec31b DE |
20932 | return NULL; |
20933 | } | |
20934 | ||
20935 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
20936 | On entry *REF_CU is the CU of SRC_DIE. | |
20937 | On exit *REF_CU is the CU of the result. | |
20938 | The result is the DIE of the type. | |
20939 | If the referenced type cannot be found an error is thrown. */ | |
20940 | ||
20941 | static struct die_info * | |
ff39bb5e | 20942 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
20943 | struct dwarf2_cu **ref_cu) |
20944 | { | |
20945 | ULONGEST signature = DW_SIGNATURE (attr); | |
20946 | struct signatured_type *sig_type; | |
20947 | struct die_info *die; | |
20948 | ||
20949 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
20950 | ||
a2ce51a0 | 20951 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
20952 | /* sig_type will be NULL if the signatured type is missing from |
20953 | the debug info. */ | |
20954 | if (sig_type == NULL) | |
20955 | { | |
20956 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20957 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 20958 | hex_string (signature), to_underlying (src_die->sect_off), |
4262abfb | 20959 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20960 | } |
20961 | ||
20962 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
20963 | if (die == NULL) | |
20964 | { | |
20965 | dump_die_for_error (src_die); | |
20966 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
20967 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 20968 | hex_string (signature), to_underlying (src_die->sect_off), |
4262abfb | 20969 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
20970 | } |
20971 | ||
20972 | return die; | |
20973 | } | |
20974 | ||
20975 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
20976 | reading in and processing the type unit if necessary. */ | |
20977 | ||
20978 | static struct type * | |
20979 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
20980 | struct dwarf2_cu *cu) | |
20981 | { | |
20982 | struct signatured_type *sig_type; | |
20983 | struct dwarf2_cu *type_cu; | |
20984 | struct die_info *type_die; | |
20985 | struct type *type; | |
20986 | ||
a2ce51a0 | 20987 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
20988 | /* sig_type will be NULL if the signatured type is missing from |
20989 | the debug info. */ | |
20990 | if (sig_type == NULL) | |
20991 | { | |
20992 | complaint (&symfile_complaints, | |
20993 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
20994 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 20995 | hex_string (signature), to_underlying (die->sect_off), |
4262abfb | 20996 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
20997 | return build_error_marker_type (cu, die); |
20998 | } | |
20999 | ||
21000 | /* If we already know the type we're done. */ | |
21001 | if (sig_type->type != NULL) | |
21002 | return sig_type->type; | |
21003 | ||
21004 | type_cu = cu; | |
21005 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
21006 | if (type_die != NULL) | |
21007 | { | |
21008 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
21009 | is created. This is important, for example, because for c++ classes | |
21010 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
21011 | type = read_type_die (type_die, type_cu); | |
21012 | if (type == NULL) | |
21013 | { | |
21014 | complaint (&symfile_complaints, | |
21015 | _("Dwarf Error: Cannot build signatured type %s" | |
21016 | " referenced from DIE at 0x%x [in module %s]"), | |
9c541725 | 21017 | hex_string (signature), to_underlying (die->sect_off), |
4262abfb | 21018 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
21019 | type = build_error_marker_type (cu, die); |
21020 | } | |
21021 | } | |
21022 | else | |
21023 | { | |
21024 | complaint (&symfile_complaints, | |
21025 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
21026 | " from DIE at 0x%x [in module %s]"), | |
9c541725 | 21027 | hex_string (signature), to_underlying (die->sect_off), |
4262abfb | 21028 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
21029 | type = build_error_marker_type (cu, die); |
21030 | } | |
21031 | sig_type->type = type; | |
21032 | ||
21033 | return type; | |
21034 | } | |
21035 | ||
21036 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
21037 | reading in and processing the type unit if necessary. */ | |
21038 | ||
21039 | static struct type * | |
ff39bb5e | 21040 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 21041 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
21042 | { |
21043 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 21044 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
21045 | { |
21046 | struct dwarf2_cu *type_cu = cu; | |
21047 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
21048 | ||
21049 | return read_type_die (type_die, type_cu); | |
21050 | } | |
21051 | else if (attr->form == DW_FORM_ref_sig8) | |
21052 | { | |
21053 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
21054 | } | |
21055 | else | |
21056 | { | |
21057 | complaint (&symfile_complaints, | |
21058 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
21059 | " at 0x%x [in module %s]"), | |
9c541725 | 21060 | dwarf_form_name (attr->form), to_underlying (die->sect_off), |
4262abfb | 21061 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
21062 | return build_error_marker_type (cu, die); |
21063 | } | |
348e048f DE |
21064 | } |
21065 | ||
e5fe5e75 | 21066 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
21067 | |
21068 | static void | |
e5fe5e75 | 21069 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 21070 | { |
52dc124a | 21071 | struct signatured_type *sig_type; |
348e048f | 21072 | |
f4dc4d17 DE |
21073 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
21074 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
21075 | ||
6721b2ec DE |
21076 | /* We have the per_cu, but we need the signatured_type. |
21077 | Fortunately this is an easy translation. */ | |
21078 | gdb_assert (per_cu->is_debug_types); | |
21079 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 21080 | |
6721b2ec | 21081 | gdb_assert (per_cu->cu == NULL); |
348e048f | 21082 | |
52dc124a | 21083 | read_signatured_type (sig_type); |
348e048f | 21084 | |
6721b2ec | 21085 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
21086 | } |
21087 | ||
dee91e82 DE |
21088 | /* die_reader_func for read_signatured_type. |
21089 | This is identical to load_full_comp_unit_reader, | |
21090 | but is kept separate for now. */ | |
348e048f DE |
21091 | |
21092 | static void | |
dee91e82 | 21093 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 21094 | const gdb_byte *info_ptr, |
dee91e82 DE |
21095 | struct die_info *comp_unit_die, |
21096 | int has_children, | |
21097 | void *data) | |
348e048f | 21098 | { |
dee91e82 | 21099 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 21100 | |
dee91e82 DE |
21101 | gdb_assert (cu->die_hash == NULL); |
21102 | cu->die_hash = | |
21103 | htab_create_alloc_ex (cu->header.length / 12, | |
21104 | die_hash, | |
21105 | die_eq, | |
21106 | NULL, | |
21107 | &cu->comp_unit_obstack, | |
21108 | hashtab_obstack_allocate, | |
21109 | dummy_obstack_deallocate); | |
348e048f | 21110 | |
dee91e82 DE |
21111 | if (has_children) |
21112 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
21113 | &info_ptr, comp_unit_die); | |
21114 | cu->dies = comp_unit_die; | |
21115 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
21116 | |
21117 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 21118 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 21119 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
21120 | or we won't be able to build types correctly. |
21121 | Similarly, if we do not read the producer, we can not apply | |
21122 | producer-specific interpretation. */ | |
95554aad | 21123 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 21124 | } |
348e048f | 21125 | |
3019eac3 DE |
21126 | /* Read in a signatured type and build its CU and DIEs. |
21127 | If the type is a stub for the real type in a DWO file, | |
21128 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
21129 | |
21130 | static void | |
21131 | read_signatured_type (struct signatured_type *sig_type) | |
21132 | { | |
21133 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 21134 | |
3019eac3 | 21135 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 21136 | gdb_assert (per_cu->cu == NULL); |
348e048f | 21137 | |
f4dc4d17 DE |
21138 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
21139 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 21140 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
21141 | } |
21142 | ||
c906108c SS |
21143 | /* Decode simple location descriptions. |
21144 | Given a pointer to a dwarf block that defines a location, compute | |
21145 | the location and return the value. | |
21146 | ||
4cecd739 DJ |
21147 | NOTE drow/2003-11-18: This function is called in two situations |
21148 | now: for the address of static or global variables (partial symbols | |
21149 | only) and for offsets into structures which are expected to be | |
21150 | (more or less) constant. The partial symbol case should go away, | |
21151 | and only the constant case should remain. That will let this | |
21152 | function complain more accurately. A few special modes are allowed | |
21153 | without complaint for global variables (for instance, global | |
21154 | register values and thread-local values). | |
c906108c SS |
21155 | |
21156 | A location description containing no operations indicates that the | |
4cecd739 | 21157 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
21158 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
21159 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
21160 | complaint. |
21161 | ||
21162 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
21163 | |
21164 | static CORE_ADDR | |
e7c27a73 | 21165 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 21166 | { |
e7c27a73 | 21167 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
21168 | size_t i; |
21169 | size_t size = blk->size; | |
d521ce57 | 21170 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
21171 | CORE_ADDR stack[64]; |
21172 | int stacki; | |
21173 | unsigned int bytes_read, unsnd; | |
21174 | gdb_byte op; | |
c906108c | 21175 | |
21ae7a4d JK |
21176 | i = 0; |
21177 | stacki = 0; | |
21178 | stack[stacki] = 0; | |
21179 | stack[++stacki] = 0; | |
21180 | ||
21181 | while (i < size) | |
21182 | { | |
21183 | op = data[i++]; | |
21184 | switch (op) | |
21185 | { | |
21186 | case DW_OP_lit0: | |
21187 | case DW_OP_lit1: | |
21188 | case DW_OP_lit2: | |
21189 | case DW_OP_lit3: | |
21190 | case DW_OP_lit4: | |
21191 | case DW_OP_lit5: | |
21192 | case DW_OP_lit6: | |
21193 | case DW_OP_lit7: | |
21194 | case DW_OP_lit8: | |
21195 | case DW_OP_lit9: | |
21196 | case DW_OP_lit10: | |
21197 | case DW_OP_lit11: | |
21198 | case DW_OP_lit12: | |
21199 | case DW_OP_lit13: | |
21200 | case DW_OP_lit14: | |
21201 | case DW_OP_lit15: | |
21202 | case DW_OP_lit16: | |
21203 | case DW_OP_lit17: | |
21204 | case DW_OP_lit18: | |
21205 | case DW_OP_lit19: | |
21206 | case DW_OP_lit20: | |
21207 | case DW_OP_lit21: | |
21208 | case DW_OP_lit22: | |
21209 | case DW_OP_lit23: | |
21210 | case DW_OP_lit24: | |
21211 | case DW_OP_lit25: | |
21212 | case DW_OP_lit26: | |
21213 | case DW_OP_lit27: | |
21214 | case DW_OP_lit28: | |
21215 | case DW_OP_lit29: | |
21216 | case DW_OP_lit30: | |
21217 | case DW_OP_lit31: | |
21218 | stack[++stacki] = op - DW_OP_lit0; | |
21219 | break; | |
f1bea926 | 21220 | |
21ae7a4d JK |
21221 | case DW_OP_reg0: |
21222 | case DW_OP_reg1: | |
21223 | case DW_OP_reg2: | |
21224 | case DW_OP_reg3: | |
21225 | case DW_OP_reg4: | |
21226 | case DW_OP_reg5: | |
21227 | case DW_OP_reg6: | |
21228 | case DW_OP_reg7: | |
21229 | case DW_OP_reg8: | |
21230 | case DW_OP_reg9: | |
21231 | case DW_OP_reg10: | |
21232 | case DW_OP_reg11: | |
21233 | case DW_OP_reg12: | |
21234 | case DW_OP_reg13: | |
21235 | case DW_OP_reg14: | |
21236 | case DW_OP_reg15: | |
21237 | case DW_OP_reg16: | |
21238 | case DW_OP_reg17: | |
21239 | case DW_OP_reg18: | |
21240 | case DW_OP_reg19: | |
21241 | case DW_OP_reg20: | |
21242 | case DW_OP_reg21: | |
21243 | case DW_OP_reg22: | |
21244 | case DW_OP_reg23: | |
21245 | case DW_OP_reg24: | |
21246 | case DW_OP_reg25: | |
21247 | case DW_OP_reg26: | |
21248 | case DW_OP_reg27: | |
21249 | case DW_OP_reg28: | |
21250 | case DW_OP_reg29: | |
21251 | case DW_OP_reg30: | |
21252 | case DW_OP_reg31: | |
21253 | stack[++stacki] = op - DW_OP_reg0; | |
21254 | if (i < size) | |
21255 | dwarf2_complex_location_expr_complaint (); | |
21256 | break; | |
c906108c | 21257 | |
21ae7a4d JK |
21258 | case DW_OP_regx: |
21259 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
21260 | i += bytes_read; | |
21261 | stack[++stacki] = unsnd; | |
21262 | if (i < size) | |
21263 | dwarf2_complex_location_expr_complaint (); | |
21264 | break; | |
c906108c | 21265 | |
21ae7a4d JK |
21266 | case DW_OP_addr: |
21267 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
21268 | cu, &bytes_read); | |
21269 | i += bytes_read; | |
21270 | break; | |
d53d4ac5 | 21271 | |
21ae7a4d JK |
21272 | case DW_OP_const1u: |
21273 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
21274 | i += 1; | |
21275 | break; | |
21276 | ||
21277 | case DW_OP_const1s: | |
21278 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
21279 | i += 1; | |
21280 | break; | |
21281 | ||
21282 | case DW_OP_const2u: | |
21283 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
21284 | i += 2; | |
21285 | break; | |
21286 | ||
21287 | case DW_OP_const2s: | |
21288 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
21289 | i += 2; | |
21290 | break; | |
d53d4ac5 | 21291 | |
21ae7a4d JK |
21292 | case DW_OP_const4u: |
21293 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
21294 | i += 4; | |
21295 | break; | |
21296 | ||
21297 | case DW_OP_const4s: | |
21298 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
21299 | i += 4; | |
21300 | break; | |
21301 | ||
585861ea JK |
21302 | case DW_OP_const8u: |
21303 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
21304 | i += 8; | |
21305 | break; | |
21306 | ||
21ae7a4d JK |
21307 | case DW_OP_constu: |
21308 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
21309 | &bytes_read); | |
21310 | i += bytes_read; | |
21311 | break; | |
21312 | ||
21313 | case DW_OP_consts: | |
21314 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
21315 | i += bytes_read; | |
21316 | break; | |
21317 | ||
21318 | case DW_OP_dup: | |
21319 | stack[stacki + 1] = stack[stacki]; | |
21320 | stacki++; | |
21321 | break; | |
21322 | ||
21323 | case DW_OP_plus: | |
21324 | stack[stacki - 1] += stack[stacki]; | |
21325 | stacki--; | |
21326 | break; | |
21327 | ||
21328 | case DW_OP_plus_uconst: | |
21329 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
21330 | &bytes_read); | |
21331 | i += bytes_read; | |
21332 | break; | |
21333 | ||
21334 | case DW_OP_minus: | |
21335 | stack[stacki - 1] -= stack[stacki]; | |
21336 | stacki--; | |
21337 | break; | |
21338 | ||
21339 | case DW_OP_deref: | |
21340 | /* If we're not the last op, then we definitely can't encode | |
21341 | this using GDB's address_class enum. This is valid for partial | |
21342 | global symbols, although the variable's address will be bogus | |
21343 | in the psymtab. */ | |
21344 | if (i < size) | |
21345 | dwarf2_complex_location_expr_complaint (); | |
21346 | break; | |
21347 | ||
21348 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 21349 | case DW_OP_form_tls_address: |
21ae7a4d JK |
21350 | /* The top of the stack has the offset from the beginning |
21351 | of the thread control block at which the variable is located. */ | |
21352 | /* Nothing should follow this operator, so the top of stack would | |
21353 | be returned. */ | |
21354 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
21355 | address will be bogus in the psymtab. Make it always at least |
21356 | non-zero to not look as a variable garbage collected by linker | |
21357 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
21358 | if (i < size) |
21359 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 21360 | stack[stacki]++; |
21ae7a4d JK |
21361 | break; |
21362 | ||
21363 | case DW_OP_GNU_uninit: | |
21364 | break; | |
21365 | ||
3019eac3 | 21366 | case DW_OP_GNU_addr_index: |
49f6c839 | 21367 | case DW_OP_GNU_const_index: |
3019eac3 DE |
21368 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
21369 | &bytes_read); | |
21370 | i += bytes_read; | |
21371 | break; | |
21372 | ||
21ae7a4d JK |
21373 | default: |
21374 | { | |
f39c6ffd | 21375 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
21376 | |
21377 | if (name) | |
21378 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
21379 | name); | |
21380 | else | |
21381 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
21382 | op); | |
21383 | } | |
21384 | ||
21385 | return (stack[stacki]); | |
d53d4ac5 | 21386 | } |
3c6e0cb3 | 21387 | |
21ae7a4d JK |
21388 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
21389 | outside of the allocated space. Also enforce minimum>0. */ | |
21390 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
21391 | { | |
21392 | complaint (&symfile_complaints, | |
21393 | _("location description stack overflow")); | |
21394 | return 0; | |
21395 | } | |
21396 | ||
21397 | if (stacki <= 0) | |
21398 | { | |
21399 | complaint (&symfile_complaints, | |
21400 | _("location description stack underflow")); | |
21401 | return 0; | |
21402 | } | |
21403 | } | |
21404 | return (stack[stacki]); | |
c906108c SS |
21405 | } |
21406 | ||
21407 | /* memory allocation interface */ | |
21408 | ||
c906108c | 21409 | static struct dwarf_block * |
7b5a2f43 | 21410 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 21411 | { |
8d749320 | 21412 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
21413 | } |
21414 | ||
c906108c | 21415 | static struct die_info * |
b60c80d6 | 21416 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
21417 | { |
21418 | struct die_info *die; | |
b60c80d6 DJ |
21419 | size_t size = sizeof (struct die_info); |
21420 | ||
21421 | if (num_attrs > 1) | |
21422 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 21423 | |
b60c80d6 | 21424 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
21425 | memset (die, 0, sizeof (struct die_info)); |
21426 | return (die); | |
21427 | } | |
2e276125 JB |
21428 | |
21429 | \f | |
21430 | /* Macro support. */ | |
21431 | ||
233d95b5 JK |
21432 | /* Return file name relative to the compilation directory of file number I in |
21433 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 21434 | responsible for freeing it. */ |
233d95b5 | 21435 | |
2e276125 | 21436 | static char * |
233d95b5 | 21437 | file_file_name (int file, struct line_header *lh) |
2e276125 | 21438 | { |
6a83a1e6 EZ |
21439 | /* Is the file number a valid index into the line header's file name |
21440 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 21441 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 21442 | { |
8c43009f | 21443 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 21444 | |
8c43009f PA |
21445 | if (!IS_ABSOLUTE_PATH (fe.name)) |
21446 | { | |
21447 | const char *dir = fe.include_dir (lh); | |
21448 | if (dir != NULL) | |
21449 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
21450 | } | |
21451 | return xstrdup (fe.name); | |
6a83a1e6 | 21452 | } |
2e276125 JB |
21453 | else |
21454 | { | |
6a83a1e6 EZ |
21455 | /* The compiler produced a bogus file number. We can at least |
21456 | record the macro definitions made in the file, even if we | |
21457 | won't be able to find the file by name. */ | |
21458 | char fake_name[80]; | |
9a619af0 | 21459 | |
8c042590 PM |
21460 | xsnprintf (fake_name, sizeof (fake_name), |
21461 | "<bad macro file number %d>", file); | |
2e276125 | 21462 | |
6e70227d | 21463 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
21464 | _("bad file number in macro information (%d)"), |
21465 | file); | |
2e276125 | 21466 | |
6a83a1e6 | 21467 | return xstrdup (fake_name); |
2e276125 JB |
21468 | } |
21469 | } | |
21470 | ||
233d95b5 JK |
21471 | /* Return the full name of file number I in *LH's file name table. |
21472 | Use COMP_DIR as the name of the current directory of the | |
21473 | compilation. The result is allocated using xmalloc; the caller is | |
21474 | responsible for freeing it. */ | |
21475 | static char * | |
21476 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
21477 | { | |
21478 | /* Is the file number a valid index into the line header's file name | |
21479 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 21480 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
21481 | { |
21482 | char *relative = file_file_name (file, lh); | |
21483 | ||
21484 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
21485 | return relative; | |
b36cec19 PA |
21486 | return reconcat (relative, comp_dir, SLASH_STRING, |
21487 | relative, (char *) NULL); | |
233d95b5 JK |
21488 | } |
21489 | else | |
21490 | return file_file_name (file, lh); | |
21491 | } | |
21492 | ||
2e276125 JB |
21493 | |
21494 | static struct macro_source_file * | |
21495 | macro_start_file (int file, int line, | |
21496 | struct macro_source_file *current_file, | |
43f3e411 | 21497 | struct line_header *lh) |
2e276125 | 21498 | { |
233d95b5 JK |
21499 | /* File name relative to the compilation directory of this source file. */ |
21500 | char *file_name = file_file_name (file, lh); | |
2e276125 | 21501 | |
2e276125 | 21502 | if (! current_file) |
abc9d0dc | 21503 | { |
fc474241 DE |
21504 | /* Note: We don't create a macro table for this compilation unit |
21505 | at all until we actually get a filename. */ | |
43f3e411 | 21506 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 21507 | |
abc9d0dc TT |
21508 | /* If we have no current file, then this must be the start_file |
21509 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
21510 | current_file = macro_set_main (macro_table, file_name); |
21511 | macro_define_special (macro_table); | |
abc9d0dc | 21512 | } |
2e276125 | 21513 | else |
233d95b5 | 21514 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 21515 | |
233d95b5 | 21516 | xfree (file_name); |
6e70227d | 21517 | |
2e276125 JB |
21518 | return current_file; |
21519 | } | |
21520 | ||
21521 | ||
21522 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
21523 | followed by a null byte. */ | |
21524 | static char * | |
21525 | copy_string (const char *buf, int len) | |
21526 | { | |
224c3ddb | 21527 | char *s = (char *) xmalloc (len + 1); |
9a619af0 | 21528 | |
2e276125 JB |
21529 | memcpy (s, buf, len); |
21530 | s[len] = '\0'; | |
2e276125 JB |
21531 | return s; |
21532 | } | |
21533 | ||
21534 | ||
21535 | static const char * | |
21536 | consume_improper_spaces (const char *p, const char *body) | |
21537 | { | |
21538 | if (*p == ' ') | |
21539 | { | |
4d3c2250 | 21540 | complaint (&symfile_complaints, |
3e43a32a MS |
21541 | _("macro definition contains spaces " |
21542 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 21543 | body); |
2e276125 JB |
21544 | |
21545 | while (*p == ' ') | |
21546 | p++; | |
21547 | } | |
21548 | ||
21549 | return p; | |
21550 | } | |
21551 | ||
21552 | ||
21553 | static void | |
21554 | parse_macro_definition (struct macro_source_file *file, int line, | |
21555 | const char *body) | |
21556 | { | |
21557 | const char *p; | |
21558 | ||
21559 | /* The body string takes one of two forms. For object-like macro | |
21560 | definitions, it should be: | |
21561 | ||
21562 | <macro name> " " <definition> | |
21563 | ||
21564 | For function-like macro definitions, it should be: | |
21565 | ||
21566 | <macro name> "() " <definition> | |
21567 | or | |
21568 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
21569 | ||
21570 | Spaces may appear only where explicitly indicated, and in the | |
21571 | <definition>. | |
21572 | ||
21573 | The Dwarf 2 spec says that an object-like macro's name is always | |
21574 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 21575 | the space when the macro's definition is the empty string. |
2e276125 JB |
21576 | |
21577 | The Dwarf 2 spec says that there should be no spaces between the | |
21578 | formal arguments in a function-like macro's formal argument list, | |
21579 | but versions of GCC around March 2002 include spaces after the | |
21580 | commas. */ | |
21581 | ||
21582 | ||
21583 | /* Find the extent of the macro name. The macro name is terminated | |
21584 | by either a space or null character (for an object-like macro) or | |
21585 | an opening paren (for a function-like macro). */ | |
21586 | for (p = body; *p; p++) | |
21587 | if (*p == ' ' || *p == '(') | |
21588 | break; | |
21589 | ||
21590 | if (*p == ' ' || *p == '\0') | |
21591 | { | |
21592 | /* It's an object-like macro. */ | |
21593 | int name_len = p - body; | |
21594 | char *name = copy_string (body, name_len); | |
21595 | const char *replacement; | |
21596 | ||
21597 | if (*p == ' ') | |
21598 | replacement = body + name_len + 1; | |
21599 | else | |
21600 | { | |
4d3c2250 | 21601 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21602 | replacement = body + name_len; |
21603 | } | |
6e70227d | 21604 | |
2e276125 JB |
21605 | macro_define_object (file, line, name, replacement); |
21606 | ||
21607 | xfree (name); | |
21608 | } | |
21609 | else if (*p == '(') | |
21610 | { | |
21611 | /* It's a function-like macro. */ | |
21612 | char *name = copy_string (body, p - body); | |
21613 | int argc = 0; | |
21614 | int argv_size = 1; | |
8d749320 | 21615 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
21616 | |
21617 | p++; | |
21618 | ||
21619 | p = consume_improper_spaces (p, body); | |
21620 | ||
21621 | /* Parse the formal argument list. */ | |
21622 | while (*p && *p != ')') | |
21623 | { | |
21624 | /* Find the extent of the current argument name. */ | |
21625 | const char *arg_start = p; | |
21626 | ||
21627 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
21628 | p++; | |
21629 | ||
21630 | if (! *p || p == arg_start) | |
4d3c2250 | 21631 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21632 | else |
21633 | { | |
21634 | /* Make sure argv has room for the new argument. */ | |
21635 | if (argc >= argv_size) | |
21636 | { | |
21637 | argv_size *= 2; | |
224c3ddb | 21638 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
21639 | } |
21640 | ||
21641 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
21642 | } | |
21643 | ||
21644 | p = consume_improper_spaces (p, body); | |
21645 | ||
21646 | /* Consume the comma, if present. */ | |
21647 | if (*p == ',') | |
21648 | { | |
21649 | p++; | |
21650 | ||
21651 | p = consume_improper_spaces (p, body); | |
21652 | } | |
21653 | } | |
21654 | ||
21655 | if (*p == ')') | |
21656 | { | |
21657 | p++; | |
21658 | ||
21659 | if (*p == ' ') | |
21660 | /* Perfectly formed definition, no complaints. */ | |
21661 | macro_define_function (file, line, name, | |
6e70227d | 21662 | argc, (const char **) argv, |
2e276125 JB |
21663 | p + 1); |
21664 | else if (*p == '\0') | |
21665 | { | |
21666 | /* Complain, but do define it. */ | |
4d3c2250 | 21667 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 21668 | macro_define_function (file, line, name, |
6e70227d | 21669 | argc, (const char **) argv, |
2e276125 JB |
21670 | p); |
21671 | } | |
21672 | else | |
21673 | /* Just complain. */ | |
4d3c2250 | 21674 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21675 | } |
21676 | else | |
21677 | /* Just complain. */ | |
4d3c2250 | 21678 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21679 | |
21680 | xfree (name); | |
21681 | { | |
21682 | int i; | |
21683 | ||
21684 | for (i = 0; i < argc; i++) | |
21685 | xfree (argv[i]); | |
21686 | } | |
21687 | xfree (argv); | |
21688 | } | |
21689 | else | |
4d3c2250 | 21690 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
21691 | } |
21692 | ||
cf2c3c16 TT |
21693 | /* Skip some bytes from BYTES according to the form given in FORM. |
21694 | Returns the new pointer. */ | |
2e276125 | 21695 | |
d521ce57 TT |
21696 | static const gdb_byte * |
21697 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
21698 | enum dwarf_form form, |
21699 | unsigned int offset_size, | |
21700 | struct dwarf2_section_info *section) | |
2e276125 | 21701 | { |
cf2c3c16 | 21702 | unsigned int bytes_read; |
2e276125 | 21703 | |
cf2c3c16 | 21704 | switch (form) |
2e276125 | 21705 | { |
cf2c3c16 TT |
21706 | case DW_FORM_data1: |
21707 | case DW_FORM_flag: | |
21708 | ++bytes; | |
21709 | break; | |
21710 | ||
21711 | case DW_FORM_data2: | |
21712 | bytes += 2; | |
21713 | break; | |
21714 | ||
21715 | case DW_FORM_data4: | |
21716 | bytes += 4; | |
21717 | break; | |
21718 | ||
21719 | case DW_FORM_data8: | |
21720 | bytes += 8; | |
21721 | break; | |
21722 | ||
0224619f JK |
21723 | case DW_FORM_data16: |
21724 | bytes += 16; | |
21725 | break; | |
21726 | ||
cf2c3c16 TT |
21727 | case DW_FORM_string: |
21728 | read_direct_string (abfd, bytes, &bytes_read); | |
21729 | bytes += bytes_read; | |
21730 | break; | |
21731 | ||
21732 | case DW_FORM_sec_offset: | |
21733 | case DW_FORM_strp: | |
36586728 | 21734 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
21735 | bytes += offset_size; |
21736 | break; | |
21737 | ||
21738 | case DW_FORM_block: | |
21739 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
21740 | bytes += bytes_read; | |
21741 | break; | |
21742 | ||
21743 | case DW_FORM_block1: | |
21744 | bytes += 1 + read_1_byte (abfd, bytes); | |
21745 | break; | |
21746 | case DW_FORM_block2: | |
21747 | bytes += 2 + read_2_bytes (abfd, bytes); | |
21748 | break; | |
21749 | case DW_FORM_block4: | |
21750 | bytes += 4 + read_4_bytes (abfd, bytes); | |
21751 | break; | |
21752 | ||
21753 | case DW_FORM_sdata: | |
21754 | case DW_FORM_udata: | |
3019eac3 DE |
21755 | case DW_FORM_GNU_addr_index: |
21756 | case DW_FORM_GNU_str_index: | |
d521ce57 | 21757 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
21758 | if (bytes == NULL) |
21759 | { | |
21760 | dwarf2_section_buffer_overflow_complaint (section); | |
21761 | return NULL; | |
21762 | } | |
cf2c3c16 TT |
21763 | break; |
21764 | ||
21765 | default: | |
21766 | { | |
21767 | complain: | |
21768 | complaint (&symfile_complaints, | |
21769 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 21770 | form, get_section_name (section)); |
cf2c3c16 TT |
21771 | return NULL; |
21772 | } | |
2e276125 JB |
21773 | } |
21774 | ||
cf2c3c16 TT |
21775 | return bytes; |
21776 | } | |
757a13d0 | 21777 | |
cf2c3c16 TT |
21778 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
21779 | opcode. Returns an updated pointer to the macro data buffer; or, | |
21780 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 21781 | |
d521ce57 | 21782 | static const gdb_byte * |
cf2c3c16 | 21783 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
21784 | const gdb_byte **opcode_definitions, |
21785 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
21786 | bfd *abfd, |
21787 | unsigned int offset_size, | |
21788 | struct dwarf2_section_info *section) | |
21789 | { | |
21790 | unsigned int bytes_read, i; | |
21791 | unsigned long arg; | |
d521ce57 | 21792 | const gdb_byte *defn; |
2e276125 | 21793 | |
cf2c3c16 | 21794 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 21795 | { |
cf2c3c16 TT |
21796 | complaint (&symfile_complaints, |
21797 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
21798 | opcode); | |
21799 | return NULL; | |
21800 | } | |
2e276125 | 21801 | |
cf2c3c16 TT |
21802 | defn = opcode_definitions[opcode]; |
21803 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
21804 | defn += bytes_read; | |
2e276125 | 21805 | |
cf2c3c16 TT |
21806 | for (i = 0; i < arg; ++i) |
21807 | { | |
aead7601 SM |
21808 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
21809 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 21810 | section); |
cf2c3c16 TT |
21811 | if (mac_ptr == NULL) |
21812 | { | |
21813 | /* skip_form_bytes already issued the complaint. */ | |
21814 | return NULL; | |
21815 | } | |
21816 | } | |
757a13d0 | 21817 | |
cf2c3c16 TT |
21818 | return mac_ptr; |
21819 | } | |
757a13d0 | 21820 | |
cf2c3c16 TT |
21821 | /* A helper function which parses the header of a macro section. |
21822 | If the macro section is the extended (for now called "GNU") type, | |
21823 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
21824 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 21825 | |
d521ce57 TT |
21826 | static const gdb_byte * |
21827 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 21828 | bfd *abfd, |
d521ce57 | 21829 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
21830 | unsigned int *offset_size, |
21831 | int section_is_gnu) | |
21832 | { | |
21833 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 21834 | |
cf2c3c16 TT |
21835 | if (section_is_gnu) |
21836 | { | |
21837 | unsigned int version, flags; | |
757a13d0 | 21838 | |
cf2c3c16 | 21839 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 21840 | if (version != 4 && version != 5) |
cf2c3c16 TT |
21841 | { |
21842 | complaint (&symfile_complaints, | |
21843 | _("unrecognized version `%d' in .debug_macro section"), | |
21844 | version); | |
21845 | return NULL; | |
21846 | } | |
21847 | mac_ptr += 2; | |
757a13d0 | 21848 | |
cf2c3c16 TT |
21849 | flags = read_1_byte (abfd, mac_ptr); |
21850 | ++mac_ptr; | |
21851 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 21852 | |
cf2c3c16 TT |
21853 | if ((flags & 2) != 0) |
21854 | /* We don't need the line table offset. */ | |
21855 | mac_ptr += *offset_size; | |
757a13d0 | 21856 | |
cf2c3c16 TT |
21857 | /* Vendor opcode descriptions. */ |
21858 | if ((flags & 4) != 0) | |
21859 | { | |
21860 | unsigned int i, count; | |
757a13d0 | 21861 | |
cf2c3c16 TT |
21862 | count = read_1_byte (abfd, mac_ptr); |
21863 | ++mac_ptr; | |
21864 | for (i = 0; i < count; ++i) | |
21865 | { | |
21866 | unsigned int opcode, bytes_read; | |
21867 | unsigned long arg; | |
21868 | ||
21869 | opcode = read_1_byte (abfd, mac_ptr); | |
21870 | ++mac_ptr; | |
21871 | opcode_definitions[opcode] = mac_ptr; | |
21872 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
21873 | mac_ptr += bytes_read; | |
21874 | mac_ptr += arg; | |
21875 | } | |
757a13d0 | 21876 | } |
cf2c3c16 | 21877 | } |
757a13d0 | 21878 | |
cf2c3c16 TT |
21879 | return mac_ptr; |
21880 | } | |
757a13d0 | 21881 | |
cf2c3c16 | 21882 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 21883 | including DW_MACRO_import. */ |
cf2c3c16 TT |
21884 | |
21885 | static void | |
d521ce57 TT |
21886 | dwarf_decode_macro_bytes (bfd *abfd, |
21887 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 21888 | struct macro_source_file *current_file, |
43f3e411 | 21889 | struct line_header *lh, |
cf2c3c16 | 21890 | struct dwarf2_section_info *section, |
36586728 | 21891 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 21892 | unsigned int offset_size, |
8fc3fc34 | 21893 | htab_t include_hash) |
cf2c3c16 | 21894 | { |
4d663531 | 21895 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
21896 | enum dwarf_macro_record_type macinfo_type; |
21897 | int at_commandline; | |
d521ce57 | 21898 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 21899 | |
cf2c3c16 TT |
21900 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
21901 | &offset_size, section_is_gnu); | |
21902 | if (mac_ptr == NULL) | |
21903 | { | |
21904 | /* We already issued a complaint. */ | |
21905 | return; | |
21906 | } | |
757a13d0 JK |
21907 | |
21908 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
21909 | GDB is still reading the definitions from command line. First | |
21910 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
21911 | to create CURRENT_FILE for the main source holding also the command line | |
21912 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
21913 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
21914 | ||
21915 | at_commandline = 1; | |
21916 | ||
21917 | do | |
21918 | { | |
21919 | /* Do we at least have room for a macinfo type byte? */ | |
21920 | if (mac_ptr >= mac_end) | |
21921 | { | |
f664829e | 21922 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
21923 | break; |
21924 | } | |
21925 | ||
aead7601 | 21926 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
21927 | mac_ptr++; |
21928 | ||
cf2c3c16 TT |
21929 | /* Note that we rely on the fact that the corresponding GNU and |
21930 | DWARF constants are the same. */ | |
757a13d0 JK |
21931 | switch (macinfo_type) |
21932 | { | |
21933 | /* A zero macinfo type indicates the end of the macro | |
21934 | information. */ | |
21935 | case 0: | |
21936 | break; | |
2e276125 | 21937 | |
0af92d60 JK |
21938 | case DW_MACRO_define: |
21939 | case DW_MACRO_undef: | |
21940 | case DW_MACRO_define_strp: | |
21941 | case DW_MACRO_undef_strp: | |
21942 | case DW_MACRO_define_sup: | |
21943 | case DW_MACRO_undef_sup: | |
2e276125 | 21944 | { |
891d2f0b | 21945 | unsigned int bytes_read; |
2e276125 | 21946 | int line; |
d521ce57 | 21947 | const char *body; |
cf2c3c16 | 21948 | int is_define; |
2e276125 | 21949 | |
cf2c3c16 TT |
21950 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
21951 | mac_ptr += bytes_read; | |
21952 | ||
0af92d60 JK |
21953 | if (macinfo_type == DW_MACRO_define |
21954 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
21955 | { |
21956 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
21957 | mac_ptr += bytes_read; | |
21958 | } | |
21959 | else | |
21960 | { | |
21961 | LONGEST str_offset; | |
21962 | ||
21963 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
21964 | mac_ptr += offset_size; | |
2e276125 | 21965 | |
0af92d60 JK |
21966 | if (macinfo_type == DW_MACRO_define_sup |
21967 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 21968 | || section_is_dwz) |
36586728 TT |
21969 | { |
21970 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
21971 | ||
21972 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
21973 | } | |
21974 | else | |
21975 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
21976 | } |
21977 | ||
0af92d60 JK |
21978 | is_define = (macinfo_type == DW_MACRO_define |
21979 | || macinfo_type == DW_MACRO_define_strp | |
21980 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 21981 | if (! current_file) |
757a13d0 JK |
21982 | { |
21983 | /* DWARF violation as no main source is present. */ | |
21984 | complaint (&symfile_complaints, | |
21985 | _("debug info with no main source gives macro %s " | |
21986 | "on line %d: %s"), | |
cf2c3c16 TT |
21987 | is_define ? _("definition") : _("undefinition"), |
21988 | line, body); | |
757a13d0 JK |
21989 | break; |
21990 | } | |
3e43a32a MS |
21991 | if ((line == 0 && !at_commandline) |
21992 | || (line != 0 && at_commandline)) | |
4d3c2250 | 21993 | complaint (&symfile_complaints, |
757a13d0 JK |
21994 | _("debug info gives %s macro %s with %s line %d: %s"), |
21995 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 21996 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
21997 | line == 0 ? _("zero") : _("non-zero"), line, body); |
21998 | ||
cf2c3c16 | 21999 | if (is_define) |
757a13d0 | 22000 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
22001 | else |
22002 | { | |
0af92d60 JK |
22003 | gdb_assert (macinfo_type == DW_MACRO_undef |
22004 | || macinfo_type == DW_MACRO_undef_strp | |
22005 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
22006 | macro_undef (current_file, line, body); |
22007 | } | |
2e276125 JB |
22008 | } |
22009 | break; | |
22010 | ||
0af92d60 | 22011 | case DW_MACRO_start_file: |
2e276125 | 22012 | { |
891d2f0b | 22013 | unsigned int bytes_read; |
2e276125 JB |
22014 | int line, file; |
22015 | ||
22016 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22017 | mac_ptr += bytes_read; | |
22018 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22019 | mac_ptr += bytes_read; | |
22020 | ||
3e43a32a MS |
22021 | if ((line == 0 && !at_commandline) |
22022 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
22023 | complaint (&symfile_complaints, |
22024 | _("debug info gives source %d included " | |
22025 | "from %s at %s line %d"), | |
22026 | file, at_commandline ? _("command-line") : _("file"), | |
22027 | line == 0 ? _("zero") : _("non-zero"), line); | |
22028 | ||
22029 | if (at_commandline) | |
22030 | { | |
0af92d60 | 22031 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 22032 | pass one. */ |
757a13d0 JK |
22033 | at_commandline = 0; |
22034 | } | |
22035 | else | |
43f3e411 | 22036 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
22037 | } |
22038 | break; | |
22039 | ||
0af92d60 | 22040 | case DW_MACRO_end_file: |
2e276125 | 22041 | if (! current_file) |
4d3c2250 | 22042 | complaint (&symfile_complaints, |
3e43a32a MS |
22043 | _("macro debug info has an unmatched " |
22044 | "`close_file' directive")); | |
2e276125 JB |
22045 | else |
22046 | { | |
22047 | current_file = current_file->included_by; | |
22048 | if (! current_file) | |
22049 | { | |
cf2c3c16 | 22050 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
22051 | |
22052 | /* GCC circa March 2002 doesn't produce the zero | |
22053 | type byte marking the end of the compilation | |
22054 | unit. Complain if it's not there, but exit no | |
22055 | matter what. */ | |
22056 | ||
22057 | /* Do we at least have room for a macinfo type byte? */ | |
22058 | if (mac_ptr >= mac_end) | |
22059 | { | |
f664829e | 22060 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
22061 | return; |
22062 | } | |
22063 | ||
22064 | /* We don't increment mac_ptr here, so this is just | |
22065 | a look-ahead. */ | |
aead7601 SM |
22066 | next_type |
22067 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
22068 | mac_ptr); | |
2e276125 | 22069 | if (next_type != 0) |
4d3c2250 | 22070 | complaint (&symfile_complaints, |
3e43a32a MS |
22071 | _("no terminating 0-type entry for " |
22072 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
22073 | |
22074 | return; | |
22075 | } | |
22076 | } | |
22077 | break; | |
22078 | ||
0af92d60 JK |
22079 | case DW_MACRO_import: |
22080 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
22081 | { |
22082 | LONGEST offset; | |
8fc3fc34 | 22083 | void **slot; |
a036ba48 TT |
22084 | bfd *include_bfd = abfd; |
22085 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 22086 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 22087 | int is_dwz = section_is_dwz; |
d521ce57 | 22088 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
22089 | |
22090 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
22091 | mac_ptr += offset_size; | |
22092 | ||
0af92d60 | 22093 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 TT |
22094 | { |
22095 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
22096 | ||
4d663531 | 22097 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 22098 | |
a036ba48 | 22099 | include_section = &dwz->macro; |
a32a8923 | 22100 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
22101 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
22102 | is_dwz = 1; | |
22103 | } | |
22104 | ||
22105 | new_mac_ptr = include_section->buffer + offset; | |
22106 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
22107 | ||
8fc3fc34 TT |
22108 | if (*slot != NULL) |
22109 | { | |
22110 | /* This has actually happened; see | |
22111 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
22112 | complaint (&symfile_complaints, | |
0af92d60 | 22113 | _("recursive DW_MACRO_import in " |
8fc3fc34 TT |
22114 | ".debug_macro section")); |
22115 | } | |
22116 | else | |
22117 | { | |
d521ce57 | 22118 | *slot = (void *) new_mac_ptr; |
36586728 | 22119 | |
a036ba48 | 22120 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
43f3e411 | 22121 | include_mac_end, current_file, lh, |
36586728 | 22122 | section, section_is_gnu, is_dwz, |
4d663531 | 22123 | offset_size, include_hash); |
8fc3fc34 | 22124 | |
d521ce57 | 22125 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 22126 | } |
cf2c3c16 TT |
22127 | } |
22128 | break; | |
22129 | ||
2e276125 | 22130 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
22131 | if (!section_is_gnu) |
22132 | { | |
22133 | unsigned int bytes_read; | |
2e276125 | 22134 | |
ac298888 TT |
22135 | /* This reads the constant, but since we don't recognize |
22136 | any vendor extensions, we ignore it. */ | |
22137 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
22138 | mac_ptr += bytes_read; |
22139 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
22140 | mac_ptr += bytes_read; | |
2e276125 | 22141 | |
cf2c3c16 TT |
22142 | /* We don't recognize any vendor extensions. */ |
22143 | break; | |
22144 | } | |
22145 | /* FALLTHROUGH */ | |
22146 | ||
22147 | default: | |
22148 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 22149 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
22150 | section); |
22151 | if (mac_ptr == NULL) | |
22152 | return; | |
22153 | break; | |
2e276125 | 22154 | } |
757a13d0 | 22155 | } while (macinfo_type != 0); |
2e276125 | 22156 | } |
8e19ed76 | 22157 | |
cf2c3c16 | 22158 | static void |
09262596 | 22159 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 22160 | int section_is_gnu) |
cf2c3c16 | 22161 | { |
bb5ed363 | 22162 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
22163 | struct line_header *lh = cu->line_header; |
22164 | bfd *abfd; | |
d521ce57 | 22165 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
22166 | struct macro_source_file *current_file = 0; |
22167 | enum dwarf_macro_record_type macinfo_type; | |
22168 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 22169 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 22170 | struct cleanup *cleanup; |
8fc3fc34 | 22171 | void **slot; |
09262596 DE |
22172 | struct dwarf2_section_info *section; |
22173 | const char *section_name; | |
22174 | ||
22175 | if (cu->dwo_unit != NULL) | |
22176 | { | |
22177 | if (section_is_gnu) | |
22178 | { | |
22179 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
22180 | section_name = ".debug_macro.dwo"; | |
22181 | } | |
22182 | else | |
22183 | { | |
22184 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
22185 | section_name = ".debug_macinfo.dwo"; | |
22186 | } | |
22187 | } | |
22188 | else | |
22189 | { | |
22190 | if (section_is_gnu) | |
22191 | { | |
22192 | section = &dwarf2_per_objfile->macro; | |
22193 | section_name = ".debug_macro"; | |
22194 | } | |
22195 | else | |
22196 | { | |
22197 | section = &dwarf2_per_objfile->macinfo; | |
22198 | section_name = ".debug_macinfo"; | |
22199 | } | |
22200 | } | |
cf2c3c16 | 22201 | |
bb5ed363 | 22202 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
22203 | if (section->buffer == NULL) |
22204 | { | |
fceca515 | 22205 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
22206 | return; |
22207 | } | |
a32a8923 | 22208 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
22209 | |
22210 | /* First pass: Find the name of the base filename. | |
22211 | This filename is needed in order to process all macros whose definition | |
22212 | (or undefinition) comes from the command line. These macros are defined | |
22213 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
22214 | associated to the base file. | |
22215 | ||
22216 | To determine the base file name, we scan the macro definitions until we | |
22217 | reach the first DW_MACINFO_start_file entry. We then initialize | |
22218 | CURRENT_FILE accordingly so that any macro definition found before the | |
22219 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
22220 | ||
22221 | mac_ptr = section->buffer + offset; | |
22222 | mac_end = section->buffer + section->size; | |
22223 | ||
22224 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
22225 | &offset_size, section_is_gnu); | |
22226 | if (mac_ptr == NULL) | |
22227 | { | |
22228 | /* We already issued a complaint. */ | |
22229 | return; | |
22230 | } | |
22231 | ||
22232 | do | |
22233 | { | |
22234 | /* Do we at least have room for a macinfo type byte? */ | |
22235 | if (mac_ptr >= mac_end) | |
22236 | { | |
22237 | /* Complaint is printed during the second pass as GDB will probably | |
22238 | stop the first pass earlier upon finding | |
22239 | DW_MACINFO_start_file. */ | |
22240 | break; | |
22241 | } | |
22242 | ||
aead7601 | 22243 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
22244 | mac_ptr++; |
22245 | ||
22246 | /* Note that we rely on the fact that the corresponding GNU and | |
22247 | DWARF constants are the same. */ | |
22248 | switch (macinfo_type) | |
22249 | { | |
22250 | /* A zero macinfo type indicates the end of the macro | |
22251 | information. */ | |
22252 | case 0: | |
22253 | break; | |
22254 | ||
0af92d60 JK |
22255 | case DW_MACRO_define: |
22256 | case DW_MACRO_undef: | |
cf2c3c16 TT |
22257 | /* Only skip the data by MAC_PTR. */ |
22258 | { | |
22259 | unsigned int bytes_read; | |
22260 | ||
22261 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22262 | mac_ptr += bytes_read; | |
22263 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
22264 | mac_ptr += bytes_read; | |
22265 | } | |
22266 | break; | |
22267 | ||
0af92d60 | 22268 | case DW_MACRO_start_file: |
cf2c3c16 TT |
22269 | { |
22270 | unsigned int bytes_read; | |
22271 | int line, file; | |
22272 | ||
22273 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22274 | mac_ptr += bytes_read; | |
22275 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22276 | mac_ptr += bytes_read; | |
22277 | ||
43f3e411 | 22278 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
22279 | } |
22280 | break; | |
22281 | ||
0af92d60 | 22282 | case DW_MACRO_end_file: |
cf2c3c16 TT |
22283 | /* No data to skip by MAC_PTR. */ |
22284 | break; | |
22285 | ||
0af92d60 JK |
22286 | case DW_MACRO_define_strp: |
22287 | case DW_MACRO_undef_strp: | |
22288 | case DW_MACRO_define_sup: | |
22289 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
22290 | { |
22291 | unsigned int bytes_read; | |
22292 | ||
22293 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22294 | mac_ptr += bytes_read; | |
22295 | mac_ptr += offset_size; | |
22296 | } | |
22297 | break; | |
22298 | ||
0af92d60 JK |
22299 | case DW_MACRO_import: |
22300 | case DW_MACRO_import_sup: | |
cf2c3c16 | 22301 | /* Note that, according to the spec, a transparent include |
0af92d60 | 22302 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
22303 | skip this opcode. */ |
22304 | mac_ptr += offset_size; | |
22305 | break; | |
22306 | ||
22307 | case DW_MACINFO_vendor_ext: | |
22308 | /* Only skip the data by MAC_PTR. */ | |
22309 | if (!section_is_gnu) | |
22310 | { | |
22311 | unsigned int bytes_read; | |
22312 | ||
22313 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
22314 | mac_ptr += bytes_read; | |
22315 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
22316 | mac_ptr += bytes_read; | |
22317 | } | |
22318 | /* FALLTHROUGH */ | |
22319 | ||
22320 | default: | |
22321 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 22322 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
22323 | section); |
22324 | if (mac_ptr == NULL) | |
22325 | return; | |
22326 | break; | |
22327 | } | |
22328 | } while (macinfo_type != 0 && current_file == NULL); | |
22329 | ||
22330 | /* Second pass: Process all entries. | |
22331 | ||
22332 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
22333 | command-line macro definitions/undefinitions. This flag is unset when we | |
22334 | reach the first DW_MACINFO_start_file entry. */ | |
22335 | ||
fc4007c9 TT |
22336 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
22337 | htab_eq_pointer, | |
22338 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 22339 | mac_ptr = section->buffer + offset; |
fc4007c9 | 22340 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 22341 | *slot = (void *) mac_ptr; |
8fc3fc34 | 22342 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
43f3e411 | 22343 | current_file, lh, section, |
fc4007c9 TT |
22344 | section_is_gnu, 0, offset_size, |
22345 | include_hash.get ()); | |
cf2c3c16 TT |
22346 | } |
22347 | ||
8e19ed76 | 22348 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 22349 | if so return true else false. */ |
380bca97 | 22350 | |
8e19ed76 | 22351 | static int |
6e5a29e1 | 22352 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
22353 | { |
22354 | return (attr == NULL ? 0 : | |
22355 | attr->form == DW_FORM_block1 | |
22356 | || attr->form == DW_FORM_block2 | |
22357 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
22358 | || attr->form == DW_FORM_block |
22359 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 22360 | } |
4c2df51b | 22361 | |
c6a0999f JB |
22362 | /* Return non-zero if ATTR's value is a section offset --- classes |
22363 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
22364 | You may use DW_UNSND (attr) to retrieve such offsets. | |
22365 | ||
22366 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
22367 | may have a value that belongs to more than one of these classes; it | |
22368 | would be ambiguous if we did, because we use the same forms for all | |
22369 | of them. */ | |
380bca97 | 22370 | |
3690dd37 | 22371 | static int |
6e5a29e1 | 22372 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
22373 | { |
22374 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
22375 | || attr->form == DW_FORM_data8 |
22376 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
22377 | } |
22378 | ||
3690dd37 JB |
22379 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
22380 | zero otherwise. When this function returns true, you can apply | |
22381 | dwarf2_get_attr_constant_value to it. | |
22382 | ||
22383 | However, note that for some attributes you must check | |
22384 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
22385 | and DW_FORM_data8 are members of both the constant class, and of | |
22386 | the classes that contain offsets into other debug sections | |
22387 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
22388 | that, if an attribute's can be either a constant or one of the | |
22389 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
22390 | taken as section offsets, not constants. |
22391 | ||
22392 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
22393 | cannot handle that. */ | |
380bca97 | 22394 | |
3690dd37 | 22395 | static int |
6e5a29e1 | 22396 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
22397 | { |
22398 | switch (attr->form) | |
22399 | { | |
22400 | case DW_FORM_sdata: | |
22401 | case DW_FORM_udata: | |
22402 | case DW_FORM_data1: | |
22403 | case DW_FORM_data2: | |
22404 | case DW_FORM_data4: | |
22405 | case DW_FORM_data8: | |
22406 | return 1; | |
22407 | default: | |
22408 | return 0; | |
22409 | } | |
22410 | } | |
22411 | ||
7771576e SA |
22412 | |
22413 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
22414 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
22415 | ||
22416 | static int | |
6e5a29e1 | 22417 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
22418 | { |
22419 | switch (attr->form) | |
22420 | { | |
22421 | case DW_FORM_ref_addr: | |
22422 | case DW_FORM_ref1: | |
22423 | case DW_FORM_ref2: | |
22424 | case DW_FORM_ref4: | |
22425 | case DW_FORM_ref8: | |
22426 | case DW_FORM_ref_udata: | |
22427 | case DW_FORM_GNU_ref_alt: | |
22428 | return 1; | |
22429 | default: | |
22430 | return 0; | |
22431 | } | |
22432 | } | |
22433 | ||
3019eac3 DE |
22434 | /* Return the .debug_loc section to use for CU. |
22435 | For DWO files use .debug_loc.dwo. */ | |
22436 | ||
22437 | static struct dwarf2_section_info * | |
22438 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
22439 | { | |
22440 | if (cu->dwo_unit) | |
43988095 JK |
22441 | { |
22442 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
22443 | ||
22444 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
22445 | } | |
22446 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
22447 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
22448 | } |
22449 | ||
8cf6f0b1 TT |
22450 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
22451 | ||
22452 | static void | |
22453 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
22454 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 22455 | const struct attribute *attr) |
8cf6f0b1 | 22456 | { |
3019eac3 DE |
22457 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
22458 | ||
22459 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
22460 | |
22461 | baton->per_cu = cu->per_cu; | |
22462 | gdb_assert (baton->per_cu); | |
22463 | /* We don't know how long the location list is, but make sure we | |
22464 | don't run off the edge of the section. */ | |
3019eac3 DE |
22465 | baton->size = section->size - DW_UNSND (attr); |
22466 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 22467 | baton->base_address = cu->base_address; |
f664829e | 22468 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
22469 | } |
22470 | ||
4c2df51b | 22471 | static void |
ff39bb5e | 22472 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 22473 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 22474 | { |
bb5ed363 | 22475 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 22476 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 22477 | |
3690dd37 | 22478 | if (attr_form_is_section_offset (attr) |
3019eac3 | 22479 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
22480 | the section. If so, fall through to the complaint in the |
22481 | other branch. */ | |
3019eac3 | 22482 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 22483 | { |
0d53c4c4 | 22484 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 22485 | |
8d749320 | 22486 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 22487 | |
8cf6f0b1 | 22488 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 22489 | |
d00adf39 | 22490 | if (cu->base_known == 0) |
0d53c4c4 | 22491 | complaint (&symfile_complaints, |
3e43a32a MS |
22492 | _("Location list used without " |
22493 | "specifying the CU base address.")); | |
4c2df51b | 22494 | |
f1e6e072 TT |
22495 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22496 | ? dwarf2_loclist_block_index | |
22497 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
22498 | SYMBOL_LOCATION_BATON (sym) = baton; |
22499 | } | |
22500 | else | |
22501 | { | |
22502 | struct dwarf2_locexpr_baton *baton; | |
22503 | ||
8d749320 | 22504 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
22505 | baton->per_cu = cu->per_cu; |
22506 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
22507 | |
22508 | if (attr_form_is_block (attr)) | |
22509 | { | |
22510 | /* Note that we're just copying the block's data pointer | |
22511 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
22512 | info_buffer for SYM's objfile; right now we never release |
22513 | that buffer, but when we do clean up properly this may | |
22514 | need to change. */ | |
0d53c4c4 DJ |
22515 | baton->size = DW_BLOCK (attr)->size; |
22516 | baton->data = DW_BLOCK (attr)->data; | |
22517 | } | |
22518 | else | |
22519 | { | |
22520 | dwarf2_invalid_attrib_class_complaint ("location description", | |
22521 | SYMBOL_NATURAL_NAME (sym)); | |
22522 | baton->size = 0; | |
0d53c4c4 | 22523 | } |
6e70227d | 22524 | |
f1e6e072 TT |
22525 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22526 | ? dwarf2_locexpr_block_index | |
22527 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
22528 | SYMBOL_LOCATION_BATON (sym) = baton; |
22529 | } | |
4c2df51b | 22530 | } |
6502dd73 | 22531 | |
9aa1f1e3 TT |
22532 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
22533 | came from a separate debuginfo file, then the master objfile is | |
22534 | returned. */ | |
ae0d2f24 UW |
22535 | |
22536 | struct objfile * | |
22537 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
22538 | { | |
9291a0cd | 22539 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
22540 | |
22541 | /* Return the master objfile, so that we can report and look up the | |
22542 | correct file containing this variable. */ | |
22543 | if (objfile->separate_debug_objfile_backlink) | |
22544 | objfile = objfile->separate_debug_objfile_backlink; | |
22545 | ||
22546 | return objfile; | |
22547 | } | |
22548 | ||
96408a79 SA |
22549 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
22550 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
22551 | CU_HEADERP first. */ | |
22552 | ||
22553 | static const struct comp_unit_head * | |
22554 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
22555 | struct dwarf2_per_cu_data *per_cu) | |
22556 | { | |
d521ce57 | 22557 | const gdb_byte *info_ptr; |
96408a79 SA |
22558 | |
22559 | if (per_cu->cu) | |
22560 | return &per_cu->cu->header; | |
22561 | ||
9c541725 | 22562 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
22563 | |
22564 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
22565 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
22566 | rcuh_kind::COMPILE); | |
96408a79 SA |
22567 | |
22568 | return cu_headerp; | |
22569 | } | |
22570 | ||
ae0d2f24 UW |
22571 | /* Return the address size given in the compilation unit header for CU. */ |
22572 | ||
98714339 | 22573 | int |
ae0d2f24 UW |
22574 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
22575 | { | |
96408a79 SA |
22576 | struct comp_unit_head cu_header_local; |
22577 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 22578 | |
96408a79 SA |
22579 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
22580 | ||
22581 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
22582 | } |
22583 | ||
9eae7c52 TT |
22584 | /* Return the offset size given in the compilation unit header for CU. */ |
22585 | ||
22586 | int | |
22587 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
22588 | { | |
96408a79 SA |
22589 | struct comp_unit_head cu_header_local; |
22590 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 22591 | |
96408a79 SA |
22592 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
22593 | ||
22594 | return cu_headerp->offset_size; | |
22595 | } | |
22596 | ||
22597 | /* See its dwarf2loc.h declaration. */ | |
22598 | ||
22599 | int | |
22600 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
22601 | { | |
22602 | struct comp_unit_head cu_header_local; | |
22603 | const struct comp_unit_head *cu_headerp; | |
22604 | ||
22605 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
22606 | ||
22607 | if (cu_headerp->version == 2) | |
22608 | return cu_headerp->addr_size; | |
22609 | else | |
22610 | return cu_headerp->offset_size; | |
181cebd4 JK |
22611 | } |
22612 | ||
9aa1f1e3 TT |
22613 | /* Return the text offset of the CU. The returned offset comes from |
22614 | this CU's objfile. If this objfile came from a separate debuginfo | |
22615 | file, then the offset may be different from the corresponding | |
22616 | offset in the parent objfile. */ | |
22617 | ||
22618 | CORE_ADDR | |
22619 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
22620 | { | |
bb3fa9d0 | 22621 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
22622 | |
22623 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
22624 | } | |
22625 | ||
43988095 JK |
22626 | /* Return DWARF version number of PER_CU. */ |
22627 | ||
22628 | short | |
22629 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
22630 | { | |
22631 | return per_cu->dwarf_version; | |
22632 | } | |
22633 | ||
348e048f DE |
22634 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
22635 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
22636 | |
22637 | static struct dwarf2_per_cu_data * | |
9c541725 | 22638 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 22639 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
22640 | struct objfile *objfile) |
22641 | { | |
22642 | struct dwarf2_per_cu_data *this_cu; | |
22643 | int low, high; | |
36586728 | 22644 | const sect_offset *cu_off; |
ae038cb0 | 22645 | |
ae038cb0 DJ |
22646 | low = 0; |
22647 | high = dwarf2_per_objfile->n_comp_units - 1; | |
22648 | while (high > low) | |
22649 | { | |
36586728 | 22650 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 22651 | int mid = low + (high - low) / 2; |
9a619af0 | 22652 | |
36586728 | 22653 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
9c541725 | 22654 | cu_off = &mid_cu->sect_off; |
36586728 | 22655 | if (mid_cu->is_dwz > offset_in_dwz |
9c541725 | 22656 | || (mid_cu->is_dwz == offset_in_dwz && *cu_off >= sect_off)) |
ae038cb0 DJ |
22657 | high = mid; |
22658 | else | |
22659 | low = mid + 1; | |
22660 | } | |
22661 | gdb_assert (low == high); | |
36586728 | 22662 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
9c541725 PA |
22663 | cu_off = &this_cu->sect_off; |
22664 | if (this_cu->is_dwz != offset_in_dwz || *cu_off > sect_off) | |
ae038cb0 | 22665 | { |
36586728 | 22666 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 22667 | error (_("Dwarf Error: could not find partial DIE containing " |
9c541725 PA |
22668 | "offset 0x%x [in module %s]"), |
22669 | to_underlying (sect_off), bfd_get_filename (objfile->obfd)); | |
10b3939b | 22670 | |
9c541725 PA |
22671 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
22672 | <= sect_off); | |
ae038cb0 DJ |
22673 | return dwarf2_per_objfile->all_comp_units[low-1]; |
22674 | } | |
22675 | else | |
22676 | { | |
22677 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
22678 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9c541725 PA |
22679 | && sect_off >= this_cu->sect_off + this_cu->length) |
22680 | error (_("invalid dwarf2 offset %u"), to_underlying (sect_off)); | |
22681 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); | |
ae038cb0 DJ |
22682 | return this_cu; |
22683 | } | |
22684 | } | |
22685 | ||
23745b47 | 22686 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 22687 | |
9816fde3 | 22688 | static void |
23745b47 | 22689 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 22690 | { |
9816fde3 | 22691 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
22692 | per_cu->cu = cu; |
22693 | cu->per_cu = per_cu; | |
22694 | cu->objfile = per_cu->objfile; | |
93311388 | 22695 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
22696 | } |
22697 | ||
22698 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
22699 | ||
22700 | static void | |
95554aad TT |
22701 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
22702 | enum language pretend_language) | |
9816fde3 JK |
22703 | { |
22704 | struct attribute *attr; | |
22705 | ||
22706 | /* Set the language we're debugging. */ | |
22707 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
22708 | if (attr) | |
22709 | set_cu_language (DW_UNSND (attr), cu); | |
22710 | else | |
9cded63f | 22711 | { |
95554aad | 22712 | cu->language = pretend_language; |
9cded63f TT |
22713 | cu->language_defn = language_def (cu->language); |
22714 | } | |
dee91e82 | 22715 | |
7d45c7c3 | 22716 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
22717 | } |
22718 | ||
ae038cb0 DJ |
22719 | /* Release one cached compilation unit, CU. We unlink it from the tree |
22720 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
22721 | the caller is responsible for that. |
22722 | NOTE: DATA is a void * because this function is also used as a | |
22723 | cleanup routine. */ | |
ae038cb0 DJ |
22724 | |
22725 | static void | |
68dc6402 | 22726 | free_heap_comp_unit (void *data) |
ae038cb0 | 22727 | { |
9a3c8263 | 22728 | struct dwarf2_cu *cu = (struct dwarf2_cu *) data; |
ae038cb0 | 22729 | |
23745b47 DE |
22730 | gdb_assert (cu->per_cu != NULL); |
22731 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
22732 | cu->per_cu = NULL; |
22733 | ||
22734 | obstack_free (&cu->comp_unit_obstack, NULL); | |
22735 | ||
22736 | xfree (cu); | |
22737 | } | |
22738 | ||
72bf9492 | 22739 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 22740 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 22741 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
22742 | |
22743 | static void | |
22744 | free_stack_comp_unit (void *data) | |
22745 | { | |
9a3c8263 | 22746 | struct dwarf2_cu *cu = (struct dwarf2_cu *) data; |
72bf9492 | 22747 | |
23745b47 DE |
22748 | gdb_assert (cu->per_cu != NULL); |
22749 | cu->per_cu->cu = NULL; | |
22750 | cu->per_cu = NULL; | |
22751 | ||
72bf9492 DJ |
22752 | obstack_free (&cu->comp_unit_obstack, NULL); |
22753 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
22754 | } |
22755 | ||
22756 | /* Free all cached compilation units. */ | |
22757 | ||
22758 | static void | |
22759 | free_cached_comp_units (void *data) | |
22760 | { | |
22761 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22762 | ||
22763 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22764 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22765 | while (per_cu != NULL) | |
22766 | { | |
22767 | struct dwarf2_per_cu_data *next_cu; | |
22768 | ||
22769 | next_cu = per_cu->cu->read_in_chain; | |
22770 | ||
68dc6402 | 22771 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
22772 | *last_chain = next_cu; |
22773 | ||
22774 | per_cu = next_cu; | |
22775 | } | |
22776 | } | |
22777 | ||
22778 | /* Increase the age counter on each cached compilation unit, and free | |
22779 | any that are too old. */ | |
22780 | ||
22781 | static void | |
22782 | age_cached_comp_units (void) | |
22783 | { | |
22784 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22785 | ||
22786 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
22787 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22788 | while (per_cu != NULL) | |
22789 | { | |
22790 | per_cu->cu->last_used ++; | |
b4f54984 | 22791 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
22792 | dwarf2_mark (per_cu->cu); |
22793 | per_cu = per_cu->cu->read_in_chain; | |
22794 | } | |
22795 | ||
22796 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22797 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22798 | while (per_cu != NULL) | |
22799 | { | |
22800 | struct dwarf2_per_cu_data *next_cu; | |
22801 | ||
22802 | next_cu = per_cu->cu->read_in_chain; | |
22803 | ||
22804 | if (!per_cu->cu->mark) | |
22805 | { | |
68dc6402 | 22806 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
22807 | *last_chain = next_cu; |
22808 | } | |
22809 | else | |
22810 | last_chain = &per_cu->cu->read_in_chain; | |
22811 | ||
22812 | per_cu = next_cu; | |
22813 | } | |
22814 | } | |
22815 | ||
22816 | /* Remove a single compilation unit from the cache. */ | |
22817 | ||
22818 | static void | |
dee91e82 | 22819 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
22820 | { |
22821 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22822 | ||
22823 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22824 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22825 | while (per_cu != NULL) | |
22826 | { | |
22827 | struct dwarf2_per_cu_data *next_cu; | |
22828 | ||
22829 | next_cu = per_cu->cu->read_in_chain; | |
22830 | ||
dee91e82 | 22831 | if (per_cu == target_per_cu) |
ae038cb0 | 22832 | { |
68dc6402 | 22833 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 22834 | per_cu->cu = NULL; |
ae038cb0 DJ |
22835 | *last_chain = next_cu; |
22836 | break; | |
22837 | } | |
22838 | else | |
22839 | last_chain = &per_cu->cu->read_in_chain; | |
22840 | ||
22841 | per_cu = next_cu; | |
22842 | } | |
22843 | } | |
22844 | ||
fe3e1990 DJ |
22845 | /* Release all extra memory associated with OBJFILE. */ |
22846 | ||
22847 | void | |
22848 | dwarf2_free_objfile (struct objfile *objfile) | |
22849 | { | |
9a3c8263 SM |
22850 | dwarf2_per_objfile |
22851 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
22852 | dwarf2_objfile_data_key); | |
fe3e1990 DJ |
22853 | |
22854 | if (dwarf2_per_objfile == NULL) | |
22855 | return; | |
22856 | ||
22857 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
22858 | free_cached_comp_units (NULL); | |
22859 | ||
7b9f3c50 DE |
22860 | if (dwarf2_per_objfile->quick_file_names_table) |
22861 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 22862 | |
527f3840 JK |
22863 | if (dwarf2_per_objfile->line_header_hash) |
22864 | htab_delete (dwarf2_per_objfile->line_header_hash); | |
22865 | ||
fe3e1990 DJ |
22866 | /* Everything else should be on the objfile obstack. */ |
22867 | } | |
22868 | ||
dee91e82 DE |
22869 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
22870 | We store these in a hash table separate from the DIEs, and preserve them | |
22871 | when the DIEs are flushed out of cache. | |
22872 | ||
22873 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 22874 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
22875 | or the type may come from a DWO file. Furthermore, while it's more logical |
22876 | to use per_cu->section+offset, with Fission the section with the data is in | |
22877 | the DWO file but we don't know that section at the point we need it. | |
22878 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
22879 | because we can enter the lookup routine, get_die_type_at_offset, from | |
22880 | outside this file, and thus won't necessarily have PER_CU->cu. | |
22881 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 22882 | |
dee91e82 | 22883 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 22884 | { |
dee91e82 | 22885 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 22886 | sect_offset sect_off; |
1c379e20 DJ |
22887 | struct type *type; |
22888 | }; | |
22889 | ||
dee91e82 | 22890 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22891 | |
22892 | static hashval_t | |
dee91e82 | 22893 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 22894 | { |
9a3c8263 SM |
22895 | const struct dwarf2_per_cu_offset_and_type *ofs |
22896 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 22897 | |
9c541725 | 22898 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
22899 | } |
22900 | ||
dee91e82 | 22901 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22902 | |
22903 | static int | |
dee91e82 | 22904 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 22905 | { |
9a3c8263 SM |
22906 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
22907 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
22908 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
22909 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 22910 | |
dee91e82 | 22911 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 22912 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
22913 | } |
22914 | ||
22915 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
22916 | table if necessary. For convenience, return TYPE. |
22917 | ||
22918 | The DIEs reading must have careful ordering to: | |
22919 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
22920 | reading current DIE. | |
22921 | * Not trying to dereference contents of still incompletely read in types | |
22922 | while reading in other DIEs. | |
22923 | * Enable referencing still incompletely read in types just by a pointer to | |
22924 | the type without accessing its fields. | |
22925 | ||
22926 | Therefore caller should follow these rules: | |
22927 | * Try to fetch any prerequisite types we may need to build this DIE type | |
22928 | before building the type and calling set_die_type. | |
e71ec853 | 22929 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
22930 | possible before fetching more types to complete the current type. |
22931 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 22932 | |
f792889a | 22933 | static struct type * |
1c379e20 DJ |
22934 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
22935 | { | |
dee91e82 | 22936 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 22937 | struct objfile *objfile = cu->objfile; |
3cdcd0ce JB |
22938 | struct attribute *attr; |
22939 | struct dynamic_prop prop; | |
1c379e20 | 22940 | |
b4ba55a1 JB |
22941 | /* For Ada types, make sure that the gnat-specific data is always |
22942 | initialized (if not already set). There are a few types where | |
22943 | we should not be doing so, because the type-specific area is | |
22944 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
22945 | where the type-specific area is used to store the floatformat). | |
22946 | But this is not a problem, because the gnat-specific information | |
22947 | is actually not needed for these types. */ | |
22948 | if (need_gnat_info (cu) | |
22949 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
22950 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
22951 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
22952 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
22953 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
22954 | && !HAVE_GNAT_AUX_INFO (type)) |
22955 | INIT_GNAT_SPECIFIC (type); | |
22956 | ||
3f2f83dd KB |
22957 | /* Read DW_AT_allocated and set in type. */ |
22958 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
22959 | if (attr_form_is_block (attr)) | |
22960 | { | |
22961 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
22962 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type, objfile); | |
22963 | } | |
22964 | else if (attr != NULL) | |
22965 | { | |
22966 | complaint (&symfile_complaints, | |
9c541725 PA |
22967 | _("DW_AT_allocated has the wrong form (%s) at DIE 0x%x"), |
22968 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), | |
22969 | to_underlying (die->sect_off)); | |
3f2f83dd KB |
22970 | } |
22971 | ||
22972 | /* Read DW_AT_associated and set in type. */ | |
22973 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
22974 | if (attr_form_is_block (attr)) | |
22975 | { | |
22976 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
22977 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type, objfile); | |
22978 | } | |
22979 | else if (attr != NULL) | |
22980 | { | |
22981 | complaint (&symfile_complaints, | |
9c541725 PA |
22982 | _("DW_AT_associated has the wrong form (%s) at DIE 0x%x"), |
22983 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), | |
22984 | to_underlying (die->sect_off)); | |
3f2f83dd KB |
22985 | } |
22986 | ||
3cdcd0ce JB |
22987 | /* Read DW_AT_data_location and set in type. */ |
22988 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
22989 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
93a8e227 | 22990 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type, objfile); |
3cdcd0ce | 22991 | |
dee91e82 | 22992 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 22993 | { |
dee91e82 DE |
22994 | dwarf2_per_objfile->die_type_hash = |
22995 | htab_create_alloc_ex (127, | |
22996 | per_cu_offset_and_type_hash, | |
22997 | per_cu_offset_and_type_eq, | |
22998 | NULL, | |
22999 | &objfile->objfile_obstack, | |
23000 | hashtab_obstack_allocate, | |
23001 | dummy_obstack_deallocate); | |
f792889a | 23002 | } |
1c379e20 | 23003 | |
dee91e82 | 23004 | ofs.per_cu = cu->per_cu; |
9c541725 | 23005 | ofs.sect_off = die->sect_off; |
1c379e20 | 23006 | ofs.type = type; |
dee91e82 DE |
23007 | slot = (struct dwarf2_per_cu_offset_and_type **) |
23008 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
23009 | if (*slot) |
23010 | complaint (&symfile_complaints, | |
23011 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
9c541725 | 23012 | to_underlying (die->sect_off)); |
8d749320 SM |
23013 | *slot = XOBNEW (&objfile->objfile_obstack, |
23014 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 23015 | **slot = ofs; |
f792889a | 23016 | return type; |
1c379e20 DJ |
23017 | } |
23018 | ||
9c541725 | 23019 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 23020 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
23021 | |
23022 | static struct type * | |
9c541725 | 23023 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 23024 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 23025 | { |
dee91e82 | 23026 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 23027 | |
dee91e82 | 23028 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 23029 | return NULL; |
1c379e20 | 23030 | |
dee91e82 | 23031 | ofs.per_cu = per_cu; |
9c541725 | 23032 | ofs.sect_off = sect_off; |
9a3c8263 SM |
23033 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
23034 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
23035 | if (slot) |
23036 | return slot->type; | |
23037 | else | |
23038 | return NULL; | |
23039 | } | |
23040 | ||
02142a6c | 23041 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
23042 | or return NULL if DIE does not have a saved type. */ |
23043 | ||
23044 | static struct type * | |
23045 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
23046 | { | |
9c541725 | 23047 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
23048 | } |
23049 | ||
10b3939b DJ |
23050 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
23051 | ||
23052 | static void | |
23053 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
23054 | struct dwarf2_per_cu_data *ref_per_cu) | |
23055 | { | |
23056 | void **slot; | |
23057 | ||
23058 | if (cu->dependencies == NULL) | |
23059 | cu->dependencies | |
23060 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
23061 | NULL, &cu->comp_unit_obstack, | |
23062 | hashtab_obstack_allocate, | |
23063 | dummy_obstack_deallocate); | |
23064 | ||
23065 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
23066 | if (*slot == NULL) | |
23067 | *slot = ref_per_cu; | |
23068 | } | |
1c379e20 | 23069 | |
f504f079 DE |
23070 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
23071 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
23072 | cache that we must keep because we are keeping CU. */ |
23073 | ||
10b3939b DJ |
23074 | static int |
23075 | dwarf2_mark_helper (void **slot, void *data) | |
23076 | { | |
23077 | struct dwarf2_per_cu_data *per_cu; | |
23078 | ||
23079 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
23080 | |
23081 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
23082 | reading of the chain. As such dependencies remain valid it is not much | |
23083 | useful to track and undo them during QUIT cleanups. */ | |
23084 | if (per_cu->cu == NULL) | |
23085 | return 1; | |
23086 | ||
10b3939b DJ |
23087 | if (per_cu->cu->mark) |
23088 | return 1; | |
23089 | per_cu->cu->mark = 1; | |
23090 | ||
23091 | if (per_cu->cu->dependencies != NULL) | |
23092 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
23093 | ||
23094 | return 1; | |
23095 | } | |
23096 | ||
f504f079 DE |
23097 | /* Set the mark field in CU and in every other compilation unit in the |
23098 | cache that we must keep because we are keeping CU. */ | |
23099 | ||
ae038cb0 DJ |
23100 | static void |
23101 | dwarf2_mark (struct dwarf2_cu *cu) | |
23102 | { | |
23103 | if (cu->mark) | |
23104 | return; | |
23105 | cu->mark = 1; | |
10b3939b DJ |
23106 | if (cu->dependencies != NULL) |
23107 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
23108 | } |
23109 | ||
23110 | static void | |
23111 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
23112 | { | |
23113 | while (per_cu) | |
23114 | { | |
23115 | per_cu->cu->mark = 0; | |
23116 | per_cu = per_cu->cu->read_in_chain; | |
23117 | } | |
72bf9492 DJ |
23118 | } |
23119 | ||
72bf9492 DJ |
23120 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
23121 | is its offset in .debug_info for this objfile. */ | |
23122 | ||
23123 | static hashval_t | |
23124 | partial_die_hash (const void *item) | |
23125 | { | |
9a3c8263 SM |
23126 | const struct partial_die_info *part_die |
23127 | = (const struct partial_die_info *) item; | |
9a619af0 | 23128 | |
9c541725 | 23129 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
23130 | } |
23131 | ||
23132 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23133 | are equal if they have the same offset. */ | |
23134 | ||
23135 | static int | |
23136 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23137 | { | |
9a3c8263 SM |
23138 | const struct partial_die_info *part_die_lhs |
23139 | = (const struct partial_die_info *) item_lhs; | |
23140 | const struct partial_die_info *part_die_rhs | |
23141 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 23142 | |
9c541725 | 23143 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
23144 | } |
23145 | ||
b4f54984 DE |
23146 | static struct cmd_list_element *set_dwarf_cmdlist; |
23147 | static struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
23148 | |
23149 | static void | |
b4f54984 | 23150 | set_dwarf_cmd (char *args, int from_tty) |
ae038cb0 | 23151 | { |
b4f54984 | 23152 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 23153 | gdb_stdout); |
ae038cb0 DJ |
23154 | } |
23155 | ||
23156 | static void | |
b4f54984 | 23157 | show_dwarf_cmd (char *args, int from_tty) |
6e70227d | 23158 | { |
b4f54984 | 23159 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
23160 | } |
23161 | ||
4bf44c1c | 23162 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
23163 | |
23164 | static void | |
c1bd65d0 | 23165 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc | 23166 | { |
9a3c8263 | 23167 | struct dwarf2_per_objfile *data = (struct dwarf2_per_objfile *) d; |
8b70b953 | 23168 | int ix; |
8b70b953 | 23169 | |
626f2d1c TT |
23170 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
23171 | cleaning up. */ | |
23172 | dwarf2_per_objfile = NULL; | |
23173 | ||
59b0c7c1 JB |
23174 | for (ix = 0; ix < data->n_comp_units; ++ix) |
23175 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 23176 | |
59b0c7c1 | 23177 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 23178 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
23179 | data->all_type_units[ix]->per_cu.imported_symtabs); |
23180 | xfree (data->all_type_units); | |
95554aad | 23181 | |
8b70b953 | 23182 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
23183 | |
23184 | if (data->dwo_files) | |
23185 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
23186 | if (data->dwp_file) |
23187 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
23188 | |
23189 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
23190 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
23191 | } |
23192 | ||
23193 | \f | |
ae2de4f8 | 23194 | /* The "save gdb-index" command. */ |
9291a0cd TT |
23195 | |
23196 | /* The contents of the hash table we create when building the string | |
23197 | table. */ | |
23198 | struct strtab_entry | |
23199 | { | |
23200 | offset_type offset; | |
23201 | const char *str; | |
23202 | }; | |
23203 | ||
559a7a62 JK |
23204 | /* Hash function for a strtab_entry. |
23205 | ||
23206 | Function is used only during write_hash_table so no index format backward | |
23207 | compatibility is needed. */ | |
b89be57b | 23208 | |
9291a0cd TT |
23209 | static hashval_t |
23210 | hash_strtab_entry (const void *e) | |
23211 | { | |
9a3c8263 | 23212 | const struct strtab_entry *entry = (const struct strtab_entry *) e; |
559a7a62 | 23213 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
23214 | } |
23215 | ||
23216 | /* Equality function for a strtab_entry. */ | |
b89be57b | 23217 | |
9291a0cd TT |
23218 | static int |
23219 | eq_strtab_entry (const void *a, const void *b) | |
23220 | { | |
9a3c8263 SM |
23221 | const struct strtab_entry *ea = (const struct strtab_entry *) a; |
23222 | const struct strtab_entry *eb = (const struct strtab_entry *) b; | |
9291a0cd TT |
23223 | return !strcmp (ea->str, eb->str); |
23224 | } | |
23225 | ||
23226 | /* Create a strtab_entry hash table. */ | |
b89be57b | 23227 | |
9291a0cd TT |
23228 | static htab_t |
23229 | create_strtab (void) | |
23230 | { | |
23231 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
23232 | xfree, xcalloc, xfree); | |
23233 | } | |
23234 | ||
23235 | /* Add a string to the constant pool. Return the string's offset in | |
23236 | host order. */ | |
b89be57b | 23237 | |
9291a0cd TT |
23238 | static offset_type |
23239 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
23240 | { | |
23241 | void **slot; | |
23242 | struct strtab_entry entry; | |
23243 | struct strtab_entry *result; | |
23244 | ||
23245 | entry.str = str; | |
23246 | slot = htab_find_slot (table, &entry, INSERT); | |
23247 | if (*slot) | |
9a3c8263 | 23248 | result = (struct strtab_entry *) *slot; |
9291a0cd TT |
23249 | else |
23250 | { | |
23251 | result = XNEW (struct strtab_entry); | |
23252 | result->offset = obstack_object_size (cpool); | |
23253 | result->str = str; | |
23254 | obstack_grow_str0 (cpool, str); | |
23255 | *slot = result; | |
23256 | } | |
23257 | return result->offset; | |
23258 | } | |
23259 | ||
23260 | /* An entry in the symbol table. */ | |
23261 | struct symtab_index_entry | |
23262 | { | |
23263 | /* The name of the symbol. */ | |
23264 | const char *name; | |
23265 | /* The offset of the name in the constant pool. */ | |
23266 | offset_type index_offset; | |
23267 | /* A sorted vector of the indices of all the CUs that hold an object | |
23268 | of this name. */ | |
23269 | VEC (offset_type) *cu_indices; | |
23270 | }; | |
23271 | ||
23272 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
23273 | struct mapped_symtab | |
23274 | { | |
23275 | offset_type n_elements; | |
23276 | offset_type size; | |
23277 | struct symtab_index_entry **data; | |
23278 | }; | |
23279 | ||
23280 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 23281 | |
9291a0cd TT |
23282 | static hashval_t |
23283 | hash_symtab_entry (const void *e) | |
23284 | { | |
9a3c8263 SM |
23285 | const struct symtab_index_entry *entry |
23286 | = (const struct symtab_index_entry *) e; | |
9291a0cd TT |
23287 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), |
23288 | sizeof (offset_type) * VEC_length (offset_type, | |
23289 | entry->cu_indices), | |
23290 | 0); | |
23291 | } | |
23292 | ||
23293 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 23294 | |
9291a0cd TT |
23295 | static int |
23296 | eq_symtab_entry (const void *a, const void *b) | |
23297 | { | |
9a3c8263 SM |
23298 | const struct symtab_index_entry *ea = (const struct symtab_index_entry *) a; |
23299 | const struct symtab_index_entry *eb = (const struct symtab_index_entry *) b; | |
9291a0cd TT |
23300 | int len = VEC_length (offset_type, ea->cu_indices); |
23301 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
23302 | return 0; | |
23303 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
23304 | VEC_address (offset_type, eb->cu_indices), | |
23305 | sizeof (offset_type) * len); | |
23306 | } | |
23307 | ||
23308 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 23309 | |
9291a0cd TT |
23310 | static void |
23311 | delete_symtab_entry (void *p) | |
23312 | { | |
9a3c8263 | 23313 | struct symtab_index_entry *entry = (struct symtab_index_entry *) p; |
9291a0cd TT |
23314 | VEC_free (offset_type, entry->cu_indices); |
23315 | xfree (entry); | |
23316 | } | |
23317 | ||
23318 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 23319 | |
9291a0cd | 23320 | static htab_t |
3876f04e | 23321 | create_symbol_hash_table (void) |
9291a0cd TT |
23322 | { |
23323 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
23324 | delete_symtab_entry, xcalloc, xfree); | |
23325 | } | |
23326 | ||
23327 | /* Create a new mapped symtab object. */ | |
b89be57b | 23328 | |
9291a0cd TT |
23329 | static struct mapped_symtab * |
23330 | create_mapped_symtab (void) | |
23331 | { | |
23332 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
23333 | symtab->n_elements = 0; | |
23334 | symtab->size = 1024; | |
23335 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
23336 | return symtab; | |
23337 | } | |
23338 | ||
23339 | /* Destroy a mapped_symtab. */ | |
b89be57b | 23340 | |
9291a0cd TT |
23341 | static void |
23342 | cleanup_mapped_symtab (void *p) | |
23343 | { | |
9a3c8263 | 23344 | struct mapped_symtab *symtab = (struct mapped_symtab *) p; |
9291a0cd TT |
23345 | /* The contents of the array are freed when the other hash table is |
23346 | destroyed. */ | |
23347 | xfree (symtab->data); | |
23348 | xfree (symtab); | |
23349 | } | |
23350 | ||
23351 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
23352 | the slot. |
23353 | ||
23354 | Function is used only during write_hash_table so no index format backward | |
23355 | compatibility is needed. */ | |
b89be57b | 23356 | |
9291a0cd TT |
23357 | static struct symtab_index_entry ** |
23358 | find_slot (struct mapped_symtab *symtab, const char *name) | |
23359 | { | |
559a7a62 | 23360 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
23361 | |
23362 | index = hash & (symtab->size - 1); | |
23363 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
23364 | ||
23365 | for (;;) | |
23366 | { | |
23367 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
23368 | return &symtab->data[index]; | |
23369 | index = (index + step) & (symtab->size - 1); | |
23370 | } | |
23371 | } | |
23372 | ||
23373 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 23374 | |
9291a0cd TT |
23375 | static void |
23376 | hash_expand (struct mapped_symtab *symtab) | |
23377 | { | |
23378 | offset_type old_size = symtab->size; | |
23379 | offset_type i; | |
23380 | struct symtab_index_entry **old_entries = symtab->data; | |
23381 | ||
23382 | symtab->size *= 2; | |
23383 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
23384 | ||
23385 | for (i = 0; i < old_size; ++i) | |
23386 | { | |
23387 | if (old_entries[i]) | |
23388 | { | |
23389 | struct symtab_index_entry **slot = find_slot (symtab, | |
23390 | old_entries[i]->name); | |
23391 | *slot = old_entries[i]; | |
23392 | } | |
23393 | } | |
23394 | ||
23395 | xfree (old_entries); | |
23396 | } | |
23397 | ||
156942c7 DE |
23398 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
23399 | CU_INDEX is the index of the CU in which the symbol appears. | |
23400 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 23401 | |
9291a0cd TT |
23402 | static void |
23403 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 23404 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
23405 | offset_type cu_index) |
23406 | { | |
23407 | struct symtab_index_entry **slot; | |
156942c7 | 23408 | offset_type cu_index_and_attrs; |
9291a0cd TT |
23409 | |
23410 | ++symtab->n_elements; | |
23411 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
23412 | hash_expand (symtab); | |
23413 | ||
23414 | slot = find_slot (symtab, name); | |
23415 | if (!*slot) | |
23416 | { | |
23417 | *slot = XNEW (struct symtab_index_entry); | |
23418 | (*slot)->name = name; | |
156942c7 | 23419 | /* index_offset is set later. */ |
9291a0cd TT |
23420 | (*slot)->cu_indices = NULL; |
23421 | } | |
156942c7 DE |
23422 | |
23423 | cu_index_and_attrs = 0; | |
23424 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
23425 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
23426 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
23427 | ||
23428 | /* We don't want to record an index value twice as we want to avoid the | |
23429 | duplication. | |
23430 | We process all global symbols and then all static symbols | |
23431 | (which would allow us to avoid the duplication by only having to check | |
23432 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
23433 | To keep things simple we don't worry about the duplication here and | |
23434 | sort and uniqufy the list after we've processed all symbols. */ | |
23435 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
23436 | } | |
23437 | ||
23438 | /* qsort helper routine for uniquify_cu_indices. */ | |
23439 | ||
23440 | static int | |
23441 | offset_type_compare (const void *ap, const void *bp) | |
23442 | { | |
23443 | offset_type a = *(offset_type *) ap; | |
23444 | offset_type b = *(offset_type *) bp; | |
23445 | ||
23446 | return (a > b) - (b > a); | |
23447 | } | |
23448 | ||
23449 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
23450 | ||
23451 | static void | |
23452 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
23453 | { | |
23454 | int i; | |
23455 | ||
23456 | for (i = 0; i < symtab->size; ++i) | |
23457 | { | |
23458 | struct symtab_index_entry *entry = symtab->data[i]; | |
23459 | ||
23460 | if (entry | |
23461 | && entry->cu_indices != NULL) | |
23462 | { | |
23463 | unsigned int next_to_insert, next_to_check; | |
23464 | offset_type last_value; | |
23465 | ||
23466 | qsort (VEC_address (offset_type, entry->cu_indices), | |
23467 | VEC_length (offset_type, entry->cu_indices), | |
23468 | sizeof (offset_type), offset_type_compare); | |
23469 | ||
23470 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
23471 | next_to_insert = 1; | |
23472 | for (next_to_check = 1; | |
23473 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
23474 | ++next_to_check) | |
23475 | { | |
23476 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
23477 | != last_value) | |
23478 | { | |
23479 | last_value = VEC_index (offset_type, entry->cu_indices, | |
23480 | next_to_check); | |
23481 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
23482 | last_value); | |
23483 | ++next_to_insert; | |
23484 | } | |
23485 | } | |
23486 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
23487 | } | |
23488 | } | |
9291a0cd TT |
23489 | } |
23490 | ||
23491 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 23492 | |
9291a0cd | 23493 | static offset_type |
3876f04e | 23494 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
23495 | struct symtab_index_entry *entry) |
23496 | { | |
23497 | void **slot; | |
23498 | ||
3876f04e | 23499 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
23500 | if (!*slot) |
23501 | { | |
23502 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
23503 | offset_type val = MAYBE_SWAP (len); | |
23504 | offset_type iter; | |
23505 | int i; | |
23506 | ||
23507 | *slot = entry; | |
23508 | entry->index_offset = obstack_object_size (cpool); | |
23509 | ||
23510 | obstack_grow (cpool, &val, sizeof (val)); | |
23511 | for (i = 0; | |
23512 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
23513 | ++i) | |
23514 | { | |
23515 | val = MAYBE_SWAP (iter); | |
23516 | obstack_grow (cpool, &val, sizeof (val)); | |
23517 | } | |
23518 | } | |
23519 | else | |
23520 | { | |
9a3c8263 SM |
23521 | struct symtab_index_entry *old_entry |
23522 | = (struct symtab_index_entry *) *slot; | |
9291a0cd TT |
23523 | entry->index_offset = old_entry->index_offset; |
23524 | entry = old_entry; | |
23525 | } | |
23526 | return entry->index_offset; | |
23527 | } | |
23528 | ||
23529 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
23530 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 23531 | |
9291a0cd TT |
23532 | static void |
23533 | write_hash_table (struct mapped_symtab *symtab, | |
23534 | struct obstack *output, struct obstack *cpool) | |
23535 | { | |
23536 | offset_type i; | |
3876f04e | 23537 | htab_t symbol_hash_table; |
9291a0cd TT |
23538 | htab_t str_table; |
23539 | ||
3876f04e | 23540 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 23541 | str_table = create_strtab (); |
3876f04e | 23542 | |
9291a0cd TT |
23543 | /* We add all the index vectors to the constant pool first, to |
23544 | ensure alignment is ok. */ | |
23545 | for (i = 0; i < symtab->size; ++i) | |
23546 | { | |
23547 | if (symtab->data[i]) | |
3876f04e | 23548 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
23549 | } |
23550 | ||
23551 | /* Now write out the hash table. */ | |
23552 | for (i = 0; i < symtab->size; ++i) | |
23553 | { | |
23554 | offset_type str_off, vec_off; | |
23555 | ||
23556 | if (symtab->data[i]) | |
23557 | { | |
23558 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
23559 | vec_off = symtab->data[i]->index_offset; | |
23560 | } | |
23561 | else | |
23562 | { | |
23563 | /* While 0 is a valid constant pool index, it is not valid | |
23564 | to have 0 for both offsets. */ | |
23565 | str_off = 0; | |
23566 | vec_off = 0; | |
23567 | } | |
23568 | ||
23569 | str_off = MAYBE_SWAP (str_off); | |
23570 | vec_off = MAYBE_SWAP (vec_off); | |
23571 | ||
23572 | obstack_grow (output, &str_off, sizeof (str_off)); | |
23573 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
23574 | } | |
23575 | ||
23576 | htab_delete (str_table); | |
3876f04e | 23577 | htab_delete (symbol_hash_table); |
9291a0cd TT |
23578 | } |
23579 | ||
0a5429f6 DE |
23580 | /* Struct to map psymtab to CU index in the index file. */ |
23581 | struct psymtab_cu_index_map | |
23582 | { | |
23583 | struct partial_symtab *psymtab; | |
23584 | unsigned int cu_index; | |
23585 | }; | |
23586 | ||
23587 | static hashval_t | |
23588 | hash_psymtab_cu_index (const void *item) | |
23589 | { | |
9a3c8263 SM |
23590 | const struct psymtab_cu_index_map *map |
23591 | = (const struct psymtab_cu_index_map *) item; | |
0a5429f6 DE |
23592 | |
23593 | return htab_hash_pointer (map->psymtab); | |
23594 | } | |
23595 | ||
23596 | static int | |
23597 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
23598 | { | |
9a3c8263 SM |
23599 | const struct psymtab_cu_index_map *lhs |
23600 | = (const struct psymtab_cu_index_map *) item_lhs; | |
23601 | const struct psymtab_cu_index_map *rhs | |
23602 | = (const struct psymtab_cu_index_map *) item_rhs; | |
0a5429f6 DE |
23603 | |
23604 | return lhs->psymtab == rhs->psymtab; | |
23605 | } | |
23606 | ||
23607 | /* Helper struct for building the address table. */ | |
23608 | struct addrmap_index_data | |
23609 | { | |
23610 | struct objfile *objfile; | |
23611 | struct obstack *addr_obstack; | |
23612 | htab_t cu_index_htab; | |
23613 | ||
23614 | /* Non-zero if the previous_* fields are valid. | |
23615 | We can't write an entry until we see the next entry (since it is only then | |
23616 | that we know the end of the entry). */ | |
23617 | int previous_valid; | |
23618 | /* Index of the CU in the table of all CUs in the index file. */ | |
23619 | unsigned int previous_cu_index; | |
0963b4bd | 23620 | /* Start address of the CU. */ |
0a5429f6 DE |
23621 | CORE_ADDR previous_cu_start; |
23622 | }; | |
23623 | ||
23624 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 23625 | |
9291a0cd | 23626 | static void |
0a5429f6 DE |
23627 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
23628 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 23629 | { |
0a5429f6 | 23630 | offset_type cu_index_to_write; |
948f8e3d | 23631 | gdb_byte addr[8]; |
9291a0cd TT |
23632 | CORE_ADDR baseaddr; |
23633 | ||
23634 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
23635 | ||
0a5429f6 DE |
23636 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
23637 | obstack_grow (obstack, addr, 8); | |
23638 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
23639 | obstack_grow (obstack, addr, 8); | |
23640 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
23641 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
23642 | } | |
23643 | ||
23644 | /* Worker function for traversing an addrmap to build the address table. */ | |
23645 | ||
23646 | static int | |
23647 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
23648 | { | |
9a3c8263 SM |
23649 | struct addrmap_index_data *data = (struct addrmap_index_data *) datap; |
23650 | struct partial_symtab *pst = (struct partial_symtab *) obj; | |
0a5429f6 DE |
23651 | |
23652 | if (data->previous_valid) | |
23653 | add_address_entry (data->objfile, data->addr_obstack, | |
23654 | data->previous_cu_start, start_addr, | |
23655 | data->previous_cu_index); | |
23656 | ||
23657 | data->previous_cu_start = start_addr; | |
23658 | if (pst != NULL) | |
23659 | { | |
23660 | struct psymtab_cu_index_map find_map, *map; | |
23661 | find_map.psymtab = pst; | |
9a3c8263 SM |
23662 | map = ((struct psymtab_cu_index_map *) |
23663 | htab_find (data->cu_index_htab, &find_map)); | |
0a5429f6 DE |
23664 | gdb_assert (map != NULL); |
23665 | data->previous_cu_index = map->cu_index; | |
23666 | data->previous_valid = 1; | |
23667 | } | |
23668 | else | |
23669 | data->previous_valid = 0; | |
23670 | ||
23671 | return 0; | |
23672 | } | |
23673 | ||
23674 | /* Write OBJFILE's address map to OBSTACK. | |
23675 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
23676 | in the index file. */ | |
23677 | ||
23678 | static void | |
23679 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
23680 | htab_t cu_index_htab) | |
23681 | { | |
23682 | struct addrmap_index_data addrmap_index_data; | |
23683 | ||
23684 | /* When writing the address table, we have to cope with the fact that | |
23685 | the addrmap iterator only provides the start of a region; we have to | |
23686 | wait until the next invocation to get the start of the next region. */ | |
23687 | ||
23688 | addrmap_index_data.objfile = objfile; | |
23689 | addrmap_index_data.addr_obstack = obstack; | |
23690 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
23691 | addrmap_index_data.previous_valid = 0; | |
23692 | ||
23693 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
23694 | &addrmap_index_data); | |
23695 | ||
23696 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
23697 | is valid, but we should still handle it. | |
23698 | The end address is recorded as the start of the next region, but that | |
23699 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
23700 | anyway. */ | |
23701 | if (addrmap_index_data.previous_valid) | |
23702 | add_address_entry (objfile, obstack, | |
23703 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
23704 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
23705 | } |
23706 | ||
156942c7 DE |
23707 | /* Return the symbol kind of PSYM. */ |
23708 | ||
23709 | static gdb_index_symbol_kind | |
23710 | symbol_kind (struct partial_symbol *psym) | |
23711 | { | |
23712 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
23713 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
23714 | ||
23715 | switch (domain) | |
23716 | { | |
23717 | case VAR_DOMAIN: | |
23718 | switch (aclass) | |
23719 | { | |
23720 | case LOC_BLOCK: | |
23721 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
23722 | case LOC_TYPEDEF: | |
23723 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
23724 | case LOC_COMPUTED: | |
23725 | case LOC_CONST_BYTES: | |
23726 | case LOC_OPTIMIZED_OUT: | |
23727 | case LOC_STATIC: | |
23728 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
23729 | case LOC_CONST: | |
23730 | /* Note: It's currently impossible to recognize psyms as enum values | |
23731 | short of reading the type info. For now punt. */ | |
23732 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
23733 | default: | |
23734 | /* There are other LOC_FOO values that one might want to classify | |
23735 | as variables, but dwarf2read.c doesn't currently use them. */ | |
23736 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
23737 | } | |
23738 | case STRUCT_DOMAIN: | |
23739 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
23740 | default: | |
23741 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
23742 | } | |
23743 | } | |
23744 | ||
9291a0cd | 23745 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 23746 | |
9291a0cd TT |
23747 | static void |
23748 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 23749 | htab_t psyms_seen, |
9291a0cd TT |
23750 | struct partial_symbol **psymp, |
23751 | int count, | |
987d643c TT |
23752 | offset_type cu_index, |
23753 | int is_static) | |
9291a0cd TT |
23754 | { |
23755 | for (; count-- > 0; ++psymp) | |
23756 | { | |
156942c7 DE |
23757 | struct partial_symbol *psym = *psymp; |
23758 | void **slot; | |
987d643c | 23759 | |
156942c7 | 23760 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 23761 | error (_("Ada is not currently supported by the index")); |
987d643c | 23762 | |
987d643c | 23763 | /* Only add a given psymbol once. */ |
156942c7 | 23764 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
23765 | if (!*slot) |
23766 | { | |
156942c7 DE |
23767 | gdb_index_symbol_kind kind = symbol_kind (psym); |
23768 | ||
23769 | *slot = psym; | |
23770 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
23771 | is_static, kind, cu_index); | |
987d643c | 23772 | } |
9291a0cd TT |
23773 | } |
23774 | } | |
23775 | ||
23776 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
23777 | exception if there is an error. */ | |
b89be57b | 23778 | |
9291a0cd TT |
23779 | static void |
23780 | write_obstack (FILE *file, struct obstack *obstack) | |
23781 | { | |
23782 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
23783 | file) | |
23784 | != obstack_object_size (obstack)) | |
23785 | error (_("couldn't data write to file")); | |
23786 | } | |
23787 | ||
1fd400ff TT |
23788 | /* A helper struct used when iterating over debug_types. */ |
23789 | struct signatured_type_index_data | |
23790 | { | |
23791 | struct objfile *objfile; | |
23792 | struct mapped_symtab *symtab; | |
23793 | struct obstack *types_list; | |
987d643c | 23794 | htab_t psyms_seen; |
1fd400ff TT |
23795 | int cu_index; |
23796 | }; | |
23797 | ||
23798 | /* A helper function that writes a single signatured_type to an | |
23799 | obstack. */ | |
b89be57b | 23800 | |
1fd400ff TT |
23801 | static int |
23802 | write_one_signatured_type (void **slot, void *d) | |
23803 | { | |
9a3c8263 SM |
23804 | struct signatured_type_index_data *info |
23805 | = (struct signatured_type_index_data *) d; | |
1fd400ff | 23806 | struct signatured_type *entry = (struct signatured_type *) *slot; |
0186c6a7 | 23807 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
23808 | gdb_byte val[8]; |
23809 | ||
23810 | write_psymbols (info->symtab, | |
987d643c | 23811 | info->psyms_seen, |
3e43a32a MS |
23812 | info->objfile->global_psymbols.list |
23813 | + psymtab->globals_offset, | |
987d643c TT |
23814 | psymtab->n_global_syms, info->cu_index, |
23815 | 0); | |
1fd400ff | 23816 | write_psymbols (info->symtab, |
987d643c | 23817 | info->psyms_seen, |
3e43a32a MS |
23818 | info->objfile->static_psymbols.list |
23819 | + psymtab->statics_offset, | |
987d643c TT |
23820 | psymtab->n_static_syms, info->cu_index, |
23821 | 1); | |
1fd400ff | 23822 | |
b64f50a1 | 23823 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
9c541725 | 23824 | to_underlying (entry->per_cu.sect_off)); |
1fd400ff | 23825 | obstack_grow (info->types_list, val, 8); |
3019eac3 | 23826 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
9c541725 | 23827 | to_underlying (entry->type_offset_in_tu)); |
1fd400ff TT |
23828 | obstack_grow (info->types_list, val, 8); |
23829 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
23830 | obstack_grow (info->types_list, val, 8); | |
23831 | ||
23832 | ++info->cu_index; | |
23833 | ||
23834 | return 1; | |
23835 | } | |
23836 | ||
95554aad TT |
23837 | /* Recurse into all "included" dependencies and write their symbols as |
23838 | if they appeared in this psymtab. */ | |
23839 | ||
23840 | static void | |
23841 | recursively_write_psymbols (struct objfile *objfile, | |
23842 | struct partial_symtab *psymtab, | |
23843 | struct mapped_symtab *symtab, | |
23844 | htab_t psyms_seen, | |
23845 | offset_type cu_index) | |
23846 | { | |
23847 | int i; | |
23848 | ||
23849 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
23850 | if (psymtab->dependencies[i]->user != NULL) | |
23851 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
23852 | symtab, psyms_seen, cu_index); | |
23853 | ||
23854 | write_psymbols (symtab, | |
23855 | psyms_seen, | |
23856 | objfile->global_psymbols.list + psymtab->globals_offset, | |
23857 | psymtab->n_global_syms, cu_index, | |
23858 | 0); | |
23859 | write_psymbols (symtab, | |
23860 | psyms_seen, | |
23861 | objfile->static_psymbols.list + psymtab->statics_offset, | |
23862 | psymtab->n_static_syms, cu_index, | |
23863 | 1); | |
23864 | } | |
23865 | ||
9291a0cd | 23866 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 23867 | |
9291a0cd TT |
23868 | static void |
23869 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
23870 | { | |
23871 | struct cleanup *cleanup; | |
bef155c3 | 23872 | char *filename; |
1fd400ff TT |
23873 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
23874 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
23875 | int i; |
23876 | FILE *out_file; | |
23877 | struct mapped_symtab *symtab; | |
23878 | offset_type val, size_of_contents, total_len; | |
23879 | struct stat st; | |
0a5429f6 | 23880 | struct psymtab_cu_index_map *psymtab_cu_index_map; |
9291a0cd | 23881 | |
9291a0cd TT |
23882 | if (dwarf2_per_objfile->using_index) |
23883 | error (_("Cannot use an index to create the index")); | |
23884 | ||
8b70b953 TT |
23885 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
23886 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
23887 | ||
260b681b DE |
23888 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
23889 | return; | |
23890 | ||
4262abfb JK |
23891 | if (stat (objfile_name (objfile), &st) < 0) |
23892 | perror_with_name (objfile_name (objfile)); | |
9291a0cd | 23893 | |
4262abfb | 23894 | filename = concat (dir, SLASH_STRING, lbasename (objfile_name (objfile)), |
9291a0cd TT |
23895 | INDEX_SUFFIX, (char *) NULL); |
23896 | cleanup = make_cleanup (xfree, filename); | |
23897 | ||
614c279d | 23898 | out_file = gdb_fopen_cloexec (filename, "wb"); |
9291a0cd TT |
23899 | if (!out_file) |
23900 | error (_("Can't open `%s' for writing"), filename); | |
23901 | ||
bef155c3 | 23902 | gdb::unlinker unlink_file (filename); |
9291a0cd TT |
23903 | |
23904 | symtab = create_mapped_symtab (); | |
23905 | make_cleanup (cleanup_mapped_symtab, symtab); | |
23906 | ||
23907 | obstack_init (&addr_obstack); | |
23908 | make_cleanup_obstack_free (&addr_obstack); | |
23909 | ||
23910 | obstack_init (&cu_list); | |
23911 | make_cleanup_obstack_free (&cu_list); | |
23912 | ||
1fd400ff TT |
23913 | obstack_init (&types_cu_list); |
23914 | make_cleanup_obstack_free (&types_cu_list); | |
23915 | ||
fc4007c9 TT |
23916 | htab_up psyms_seen (htab_create_alloc (100, htab_hash_pointer, |
23917 | htab_eq_pointer, | |
23918 | NULL, xcalloc, xfree)); | |
987d643c | 23919 | |
0a5429f6 DE |
23920 | /* While we're scanning CU's create a table that maps a psymtab pointer |
23921 | (which is what addrmap records) to its index (which is what is recorded | |
23922 | in the index file). This will later be needed to write the address | |
23923 | table. */ | |
fc4007c9 TT |
23924 | htab_up cu_index_htab (htab_create_alloc (100, |
23925 | hash_psymtab_cu_index, | |
23926 | eq_psymtab_cu_index, | |
23927 | NULL, xcalloc, xfree)); | |
8d749320 SM |
23928 | psymtab_cu_index_map = XNEWVEC (struct psymtab_cu_index_map, |
23929 | dwarf2_per_objfile->n_comp_units); | |
0a5429f6 DE |
23930 | make_cleanup (xfree, psymtab_cu_index_map); |
23931 | ||
23932 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
23933 | work here. Also, the debug_types entries do not appear in |
23934 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
23935 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
23936 | { | |
3e43a32a MS |
23937 | struct dwarf2_per_cu_data *per_cu |
23938 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 23939 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 23940 | gdb_byte val[8]; |
0a5429f6 DE |
23941 | struct psymtab_cu_index_map *map; |
23942 | void **slot; | |
9291a0cd | 23943 | |
92fac807 JK |
23944 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
23945 | It may be referenced from a local scope but in such case it does not | |
23946 | need to be present in .gdb_index. */ | |
23947 | if (psymtab == NULL) | |
23948 | continue; | |
23949 | ||
95554aad | 23950 | if (psymtab->user == NULL) |
fc4007c9 TT |
23951 | recursively_write_psymbols (objfile, psymtab, symtab, |
23952 | psyms_seen.get (), i); | |
9291a0cd | 23953 | |
0a5429f6 DE |
23954 | map = &psymtab_cu_index_map[i]; |
23955 | map->psymtab = psymtab; | |
23956 | map->cu_index = i; | |
fc4007c9 | 23957 | slot = htab_find_slot (cu_index_htab.get (), map, INSERT); |
0a5429f6 DE |
23958 | gdb_assert (slot != NULL); |
23959 | gdb_assert (*slot == NULL); | |
23960 | *slot = map; | |
9291a0cd | 23961 | |
b64f50a1 | 23962 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
9c541725 | 23963 | to_underlying (per_cu->sect_off)); |
9291a0cd | 23964 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 23965 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
23966 | obstack_grow (&cu_list, val, 8); |
23967 | } | |
23968 | ||
0a5429f6 | 23969 | /* Dump the address map. */ |
fc4007c9 | 23970 | write_address_map (objfile, &addr_obstack, cu_index_htab.get ()); |
0a5429f6 | 23971 | |
1fd400ff TT |
23972 | /* Write out the .debug_type entries, if any. */ |
23973 | if (dwarf2_per_objfile->signatured_types) | |
23974 | { | |
23975 | struct signatured_type_index_data sig_data; | |
23976 | ||
23977 | sig_data.objfile = objfile; | |
23978 | sig_data.symtab = symtab; | |
23979 | sig_data.types_list = &types_cu_list; | |
fc4007c9 | 23980 | sig_data.psyms_seen = psyms_seen.get (); |
1fd400ff TT |
23981 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
23982 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
23983 | write_one_signatured_type, &sig_data); | |
23984 | } | |
23985 | ||
156942c7 DE |
23986 | /* Now that we've processed all symbols we can shrink their cu_indices |
23987 | lists. */ | |
23988 | uniquify_cu_indices (symtab); | |
23989 | ||
9291a0cd TT |
23990 | obstack_init (&constant_pool); |
23991 | make_cleanup_obstack_free (&constant_pool); | |
23992 | obstack_init (&symtab_obstack); | |
23993 | make_cleanup_obstack_free (&symtab_obstack); | |
23994 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
23995 | ||
23996 | obstack_init (&contents); | |
23997 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 23998 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
23999 | total_len = size_of_contents; |
24000 | ||
24001 | /* The version number. */ | |
796a7ff8 | 24002 | val = MAYBE_SWAP (8); |
9291a0cd TT |
24003 | obstack_grow (&contents, &val, sizeof (val)); |
24004 | ||
24005 | /* The offset of the CU list from the start of the file. */ | |
24006 | val = MAYBE_SWAP (total_len); | |
24007 | obstack_grow (&contents, &val, sizeof (val)); | |
24008 | total_len += obstack_object_size (&cu_list); | |
24009 | ||
1fd400ff TT |
24010 | /* The offset of the types CU list from the start of the file. */ |
24011 | val = MAYBE_SWAP (total_len); | |
24012 | obstack_grow (&contents, &val, sizeof (val)); | |
24013 | total_len += obstack_object_size (&types_cu_list); | |
24014 | ||
9291a0cd TT |
24015 | /* The offset of the address table from the start of the file. */ |
24016 | val = MAYBE_SWAP (total_len); | |
24017 | obstack_grow (&contents, &val, sizeof (val)); | |
24018 | total_len += obstack_object_size (&addr_obstack); | |
24019 | ||
24020 | /* The offset of the symbol table from the start of the file. */ | |
24021 | val = MAYBE_SWAP (total_len); | |
24022 | obstack_grow (&contents, &val, sizeof (val)); | |
24023 | total_len += obstack_object_size (&symtab_obstack); | |
24024 | ||
24025 | /* The offset of the constant pool from the start of the file. */ | |
24026 | val = MAYBE_SWAP (total_len); | |
24027 | obstack_grow (&contents, &val, sizeof (val)); | |
24028 | total_len += obstack_object_size (&constant_pool); | |
24029 | ||
24030 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
24031 | ||
24032 | write_obstack (out_file, &contents); | |
24033 | write_obstack (out_file, &cu_list); | |
1fd400ff | 24034 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
24035 | write_obstack (out_file, &addr_obstack); |
24036 | write_obstack (out_file, &symtab_obstack); | |
24037 | write_obstack (out_file, &constant_pool); | |
24038 | ||
24039 | fclose (out_file); | |
24040 | ||
bef155c3 TT |
24041 | /* We want to keep the file. */ |
24042 | unlink_file.keep (); | |
9291a0cd TT |
24043 | |
24044 | do_cleanups (cleanup); | |
24045 | } | |
24046 | ||
90476074 TT |
24047 | /* Implementation of the `save gdb-index' command. |
24048 | ||
24049 | Note that the file format used by this command is documented in the | |
24050 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 24051 | |
9291a0cd TT |
24052 | static void |
24053 | save_gdb_index_command (char *arg, int from_tty) | |
24054 | { | |
24055 | struct objfile *objfile; | |
24056 | ||
24057 | if (!arg || !*arg) | |
96d19272 | 24058 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
24059 | |
24060 | ALL_OBJFILES (objfile) | |
24061 | { | |
24062 | struct stat st; | |
24063 | ||
24064 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 24065 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
24066 | continue; |
24067 | ||
9a3c8263 SM |
24068 | dwarf2_per_objfile |
24069 | = (struct dwarf2_per_objfile *) objfile_data (objfile, | |
24070 | dwarf2_objfile_data_key); | |
9291a0cd TT |
24071 | if (dwarf2_per_objfile) |
24072 | { | |
9291a0cd | 24073 | |
492d29ea | 24074 | TRY |
9291a0cd TT |
24075 | { |
24076 | write_psymtabs_to_index (objfile, arg); | |
24077 | } | |
492d29ea PA |
24078 | CATCH (except, RETURN_MASK_ERROR) |
24079 | { | |
24080 | exception_fprintf (gdb_stderr, except, | |
24081 | _("Error while writing index for `%s': "), | |
24082 | objfile_name (objfile)); | |
24083 | } | |
24084 | END_CATCH | |
9291a0cd TT |
24085 | } |
24086 | } | |
dce234bc PP |
24087 | } |
24088 | ||
9291a0cd TT |
24089 | \f |
24090 | ||
b4f54984 | 24091 | int dwarf_always_disassemble; |
9eae7c52 TT |
24092 | |
24093 | static void | |
b4f54984 DE |
24094 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
24095 | struct cmd_list_element *c, const char *value) | |
9eae7c52 | 24096 | { |
3e43a32a MS |
24097 | fprintf_filtered (file, |
24098 | _("Whether to always disassemble " | |
24099 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
24100 | value); |
24101 | } | |
24102 | ||
900e11f9 JK |
24103 | static void |
24104 | show_check_physname (struct ui_file *file, int from_tty, | |
24105 | struct cmd_list_element *c, const char *value) | |
24106 | { | |
24107 | fprintf_filtered (file, | |
24108 | _("Whether to check \"physname\" is %s.\n"), | |
24109 | value); | |
24110 | } | |
24111 | ||
6502dd73 DJ |
24112 | void _initialize_dwarf2_read (void); |
24113 | ||
24114 | void | |
24115 | _initialize_dwarf2_read (void) | |
24116 | { | |
96d19272 JK |
24117 | struct cmd_list_element *c; |
24118 | ||
dce234bc | 24119 | dwarf2_objfile_data_key |
c1bd65d0 | 24120 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 24121 | |
b4f54984 DE |
24122 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
24123 | Set DWARF specific variables.\n\ | |
24124 | Configure DWARF variables such as the cache size"), | |
24125 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
ae038cb0 DJ |
24126 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
24127 | ||
b4f54984 DE |
24128 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
24129 | Show DWARF specific variables\n\ | |
24130 | Show DWARF variables such as the cache size"), | |
24131 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
ae038cb0 DJ |
24132 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
24133 | ||
24134 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
b4f54984 DE |
24135 | &dwarf_max_cache_age, _("\ |
24136 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
24137 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
7915a72c AC |
24138 | A higher limit means that cached compilation units will be stored\n\ |
24139 | in memory longer, and more total memory will be used. Zero disables\n\ | |
24140 | caching, which can slow down startup."), | |
2c5b56ce | 24141 | NULL, |
b4f54984 DE |
24142 | show_dwarf_max_cache_age, |
24143 | &set_dwarf_cmdlist, | |
24144 | &show_dwarf_cmdlist); | |
d97bc12b | 24145 | |
9eae7c52 | 24146 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
b4f54984 | 24147 | &dwarf_always_disassemble, _("\ |
9eae7c52 TT |
24148 | Set whether `info address' always disassembles DWARF expressions."), _("\ |
24149 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
24150 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
24151 | syntax. When disabled, expressions will be printed in a more\n\ | |
24152 | conversational style, when possible."), | |
24153 | NULL, | |
b4f54984 DE |
24154 | show_dwarf_always_disassemble, |
24155 | &set_dwarf_cmdlist, | |
24156 | &show_dwarf_cmdlist); | |
24157 | ||
24158 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ | |
24159 | Set debugging of the DWARF reader."), _("\ | |
24160 | Show debugging of the DWARF reader."), _("\ | |
24161 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
73be47f5 DE |
24162 | reading and symtab expansion. A value of 1 (one) provides basic\n\ |
24163 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
24164 | NULL, |
24165 | NULL, | |
24166 | &setdebuglist, &showdebuglist); | |
24167 | ||
b4f54984 DE |
24168 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
24169 | Set debugging of the DWARF DIE reader."), _("\ | |
24170 | Show debugging of the DWARF DIE reader."), _("\ | |
d97bc12b DE |
24171 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ |
24172 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
24173 | NULL, |
24174 | NULL, | |
24175 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24176 | |
27e0867f DE |
24177 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
24178 | Set debugging of the dwarf line reader."), _("\ | |
24179 | Show debugging of the dwarf line reader."), _("\ | |
24180 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
24181 | A value of 1 (one) provides basic information.\n\ | |
24182 | A value greater than 1 provides more verbose information."), | |
24183 | NULL, | |
24184 | NULL, | |
24185 | &setdebuglist, &showdebuglist); | |
24186 | ||
900e11f9 JK |
24187 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
24188 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
24189 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
24190 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
24191 | the demangler."), | |
24192 | NULL, show_check_physname, | |
24193 | &setdebuglist, &showdebuglist); | |
24194 | ||
e615022a DE |
24195 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
24196 | no_class, &use_deprecated_index_sections, _("\ | |
24197 | Set whether to use deprecated gdb_index sections."), _("\ | |
24198 | Show whether to use deprecated gdb_index sections."), _("\ | |
24199 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
24200 | Normally they are ignored either because of a missing feature or\n\ | |
24201 | performance issue.\n\ | |
24202 | Warning: This option must be enabled before gdb reads the file."), | |
24203 | NULL, | |
24204 | NULL, | |
24205 | &setlist, &showlist); | |
24206 | ||
96d19272 | 24207 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 24208 | _("\ |
fc1a9d6e | 24209 | Save a gdb-index file.\n\ |
11570e71 | 24210 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
24211 | &save_cmdlist); |
24212 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
24213 | |
24214 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24215 | &dwarf2_locexpr_funcs); | |
24216 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24217 | &dwarf2_loclist_funcs); | |
24218 | ||
24219 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24220 | &dwarf2_block_frame_base_locexpr_funcs); | |
24221 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24222 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 24223 | } |