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c906108c | 1 | /* Definitions for reading symbol files into GDB. |
3a6c3343 | 2 | |
b811d2c2 | 3 | Copyright (C) 1990-2020 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #if !defined (SYMFILE_H) | |
21 | #define SYMFILE_H | |
22 | ||
23 | /* This file requires that you first include "bfd.h". */ | |
16708cba | 24 | #include "symtab.h" |
48faced0 | 25 | #include "probe.h" |
b15cc25c PA |
26 | #include "symfile-add-flags.h" |
27 | #include "objfile-flags.h" | |
192b62ce | 28 | #include "gdb_bfd.h" |
268a13a5 | 29 | #include "gdbsupport/function-view.h" |
c906108c | 30 | |
63ca651f | 31 | /* Opaque declarations. */ |
0542c86d | 32 | struct target_section; |
da3331ec | 33 | struct objfile; |
1c772458 | 34 | struct obj_section; |
63ca651f | 35 | struct obstack; |
fe898f56 | 36 | struct block; |
55aa24fb SDJ |
37 | struct value; |
38 | struct frame_info; | |
39 | struct agent_expr; | |
40 | struct axs_value; | |
935676c9 | 41 | class probe; |
63ca651f | 42 | |
2edb89d3 JK |
43 | /* Comparison function for symbol look ups. */ |
44 | ||
45 | typedef int (symbol_compare_ftype) (const char *string1, | |
46 | const char *string2); | |
47 | ||
52059ffd TT |
48 | struct other_sections |
49 | { | |
37e136b1 TT |
50 | other_sections (CORE_ADDR addr_, std::string &&name_, int sectindex_) |
51 | : addr (addr_), | |
52 | name (std::move (name_)), | |
53 | sectindex (sectindex_) | |
54 | { | |
55 | } | |
56 | ||
57 | other_sections (other_sections &&other) = default; | |
58 | ||
59 | DISABLE_COPY_AND_ASSIGN (other_sections); | |
60 | ||
52059ffd | 61 | CORE_ADDR addr; |
37e136b1 | 62 | std::string name; |
52059ffd | 63 | |
d81a3eaf PT |
64 | /* SECTINDEX must be valid for associated BFD or set to -1. |
65 | See syms_from_objfile_1 for an exception to this rule. | |
66 | */ | |
52059ffd TT |
67 | int sectindex; |
68 | }; | |
69 | ||
62557bbc KB |
70 | /* Define an array of addresses to accommodate non-contiguous dynamic |
71 | loading of modules. This is for use when entering commands, so we | |
3a6c3343 AC |
72 | can keep track of the section names until we read the file and can |
73 | map them to bfd sections. This structure is also used by solib.c | |
74 | to communicate the section addresses in shared objects to | |
75 | symbol_file_add (). */ | |
76 | ||
37e136b1 | 77 | typedef std::vector<other_sections> section_addr_info; |
28c32713 JB |
78 | |
79 | /* A table listing the load segments in a symfile, and which segment | |
80 | each BFD section belongs to. */ | |
31d99776 DJ |
81 | struct symfile_segment_data |
82 | { | |
68b888ff SM |
83 | struct segment |
84 | { | |
85 | segment (CORE_ADDR base, CORE_ADDR size) | |
86 | : base (base), size (size) | |
87 | {} | |
88 | ||
89 | /* The original base address the segment. */ | |
90 | CORE_ADDR base; | |
91 | ||
92 | /* The memory size of the segment. */ | |
93 | CORE_ADDR size; | |
94 | }; | |
95 | ||
62982abd SM |
96 | ~symfile_segment_data () |
97 | { | |
62982abd SM |
98 | xfree (this->segment_info); |
99 | } | |
100 | ||
68b888ff | 101 | /* The segments present in this file. If there are |
31d99776 DJ |
102 | two, the text segment is the first one and the data segment |
103 | is the second one. */ | |
68b888ff | 104 | std::vector<segment> segments; |
31d99776 | 105 | |
68b888ff SM |
106 | /* This is an array of entries recording which segment contains each BFD |
107 | section. SEGMENT_INFO[I] is S+1 if the I'th BFD section belongs to segment | |
28c32713 | 108 | S, or zero if it is not in any segment. */ |
62982abd | 109 | int *segment_info = nullptr; |
31d99776 DJ |
110 | }; |
111 | ||
62982abd SM |
112 | using symfile_segment_data_up = std::unique_ptr<symfile_segment_data>; |
113 | ||
44b13c5a JK |
114 | /* Callback for quick_symbol_functions->map_symbol_filenames. */ |
115 | ||
116 | typedef void (symbol_filename_ftype) (const char *filename, | |
117 | const char *fullname, void *data); | |
118 | ||
206f2a57 DE |
119 | /* Callback for quick_symbol_functions->expand_symtabs_matching |
120 | to match a file name. */ | |
121 | ||
14bc53a8 PA |
122 | typedef bool (expand_symtabs_file_matcher_ftype) (const char *filename, |
123 | bool basenames); | |
206f2a57 DE |
124 | |
125 | /* Callback for quick_symbol_functions->expand_symtabs_matching | |
126 | to match a symbol name. */ | |
127 | ||
14bc53a8 | 128 | typedef bool (expand_symtabs_symbol_matcher_ftype) (const char *name); |
206f2a57 | 129 | |
276d885b GB |
130 | /* Callback for quick_symbol_functions->expand_symtabs_matching |
131 | to be called after a symtab has been expanded. */ | |
132 | ||
14bc53a8 | 133 | typedef void (expand_symtabs_exp_notify_ftype) (compunit_symtab *symtab); |
276d885b | 134 | |
ccefe4c4 TT |
135 | /* The "quick" symbol functions exist so that symbol readers can |
136 | avoiding an initial read of all the symbols. For example, symbol | |
137 | readers might choose to use the "partial symbol table" utilities, | |
138 | which is one implementation of the quick symbol functions. | |
139 | ||
140 | The quick symbol functions are generally opaque: the underlying | |
141 | representation is hidden from the caller. | |
142 | ||
143 | In general, these functions should only look at whatever special | |
144 | index the symbol reader creates -- looking through the symbol | |
145 | tables themselves is handled by generic code. If a function is | |
146 | defined as returning a "symbol table", this means that the function | |
147 | should only return a newly-created symbol table; it should not | |
148 | examine pre-existing ones. | |
149 | ||
150 | The exact list of functions here was determined in an ad hoc way | |
151 | based on gdb's history. */ | |
152 | ||
153 | struct quick_symbol_functions | |
154 | { | |
155 | /* Return true if this objfile has any "partial" symbols | |
156 | available. */ | |
157 | int (*has_symbols) (struct objfile *objfile); | |
158 | ||
159 | /* Return the symbol table for the "last" file appearing in | |
160 | OBJFILE. */ | |
161 | struct symtab *(*find_last_source_symtab) (struct objfile *objfile); | |
162 | ||
163 | /* Forget all cached full file names for OBJFILE. */ | |
164 | void (*forget_cached_source_info) (struct objfile *objfile); | |
165 | ||
f8eba3c6 TT |
166 | /* Expand and iterate over each "partial" symbol table in OBJFILE |
167 | where the source file is named NAME. | |
168 | ||
af529f8f JK |
169 | If NAME is not absolute, a match after a '/' in the symbol table's |
170 | file name will also work, REAL_PATH is NULL then. If NAME is | |
171 | absolute then REAL_PATH is non-NULL absolute file name as resolved | |
172 | via gdb_realpath from NAME. | |
f8eba3c6 TT |
173 | |
174 | If a match is found, the "partial" symbol table is expanded. | |
175 | Then, this calls iterate_over_some_symtabs (or equivalent) over | |
14bc53a8 | 176 | all newly-created symbol tables, passing CALLBACK to it. |
f8eba3c6 | 177 | The result of this call is returned. */ |
14bc53a8 PA |
178 | bool (*map_symtabs_matching_filename) |
179 | (struct objfile *objfile, const char *name, const char *real_path, | |
180 | gdb::function_view<bool (symtab *)> callback); | |
ccefe4c4 TT |
181 | |
182 | /* Check to see if the symbol is defined in a "partial" symbol table | |
f88cb4b6 | 183 | of OBJFILE. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, |
ccefe4c4 TT |
184 | depending on whether we want to search global symbols or static |
185 | symbols. NAME is the name of the symbol to look for. DOMAIN | |
186 | indicates what sort of symbol to search for. | |
187 | ||
43f3e411 | 188 | Returns the newly-expanded compunit in which the symbol is |
bfb05775 | 189 | defined, or NULL if no such symbol table exists. If OBJFILE |
43f3e411 DE |
190 | contains !TYPE_OPAQUE symbol prefer its compunit. If it contains |
191 | only TYPE_OPAQUE symbol(s), return at least that compunit. */ | |
192 | struct compunit_symtab *(*lookup_symbol) (struct objfile *objfile, | |
c7f839cb SM |
193 | block_enum block_index, |
194 | const char *name, | |
43f3e411 | 195 | domain_enum domain); |
ccefe4c4 | 196 | |
d3214198 TV |
197 | /* Check to see if the global symbol is defined in a "partial" symbol table |
198 | of OBJFILE. NAME is the name of the symbol to look for. DOMAIN | |
199 | indicates what sort of symbol to search for. | |
200 | ||
201 | If found, sets *symbol_found_p to true and returns the symbol language. | |
202 | defined, or NULL if no such symbol table exists. */ | |
203 | enum language (*lookup_global_symbol_language) (struct objfile *objfile, | |
204 | const char *name, | |
205 | domain_enum domain, | |
206 | bool *symbol_found_p); | |
207 | ||
ccefe4c4 TT |
208 | /* Print statistics about any indices loaded for OBJFILE. The |
209 | statistics should be printed to gdb_stdout. This is used for | |
210 | "maint print statistics". */ | |
211 | void (*print_stats) (struct objfile *objfile); | |
212 | ||
213 | /* Dump any indices loaded for OBJFILE. The dump should go to | |
214 | gdb_stdout. This is used for "maint print objfiles". */ | |
215 | void (*dump) (struct objfile *objfile); | |
216 | ||
ccefe4c4 TT |
217 | /* Find all the symbols in OBJFILE named FUNC_NAME, and ensure that |
218 | the corresponding symbol tables are loaded. */ | |
219 | void (*expand_symtabs_for_function) (struct objfile *objfile, | |
220 | const char *func_name); | |
221 | ||
222 | /* Read all symbol tables associated with OBJFILE. */ | |
223 | void (*expand_all_symtabs) (struct objfile *objfile); | |
224 | ||
652a8996 JK |
225 | /* Read all symbol tables associated with OBJFILE which have |
226 | symtab_to_fullname equal to FULLNAME. | |
d4637a04 DE |
227 | This is for the purposes of examining code only, e.g., expand_line_sal. |
228 | The routine may ignore debug info that is known to not be useful with | |
229 | code, e.g., DW_TAG_type_unit for dwarf debug info. */ | |
652a8996 JK |
230 | void (*expand_symtabs_with_fullname) (struct objfile *objfile, |
231 | const char *fullname); | |
ccefe4c4 | 232 | |
fe978cb0 | 233 | /* Find global or static symbols in all tables that are in DOMAIN |
40658b94 | 234 | and for which MATCH (symbol name, NAME) == 0, passing each to |
265e52c3 | 235 | CALLBACK, reading in partial symbol tables as needed. Look |
c378eb4e | 236 | through global symbols if GLOBAL and otherwise static symbols. |
199b4314 | 237 | Passes NAME and NAMESPACE to CALLBACK with each symbol |
40658b94 | 238 | found. After each block is processed, passes NULL to CALLBACK. |
1e3a8f45 JB |
239 | MATCH must be weaker than strcmp_iw_ordered in the sense that |
240 | strcmp_iw_ordered(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE, | |
241 | if non-null, must be an ordering relation compatible with | |
242 | strcmp_iw_ordered in the sense that | |
243 | strcmp_iw_ordered(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0 | |
40658b94 | 244 | and |
1e3a8f45 JB |
245 | strcmp_iw_ordered(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0 |
246 | (allowing strcmp_iw_ordered(x,y) < 0 while ORDERED_COMPARE(x, y) == 0). | |
199b4314 TT |
247 | CALLBACK returns true to indicate that the scan should continue, or |
248 | false to indicate that the scan should be terminated. */ | |
249 | ||
250 | void (*map_matching_symbols) | |
251 | (struct objfile *, | |
b054970d TT |
252 | const lookup_name_info &lookup_name, |
253 | domain_enum domain, | |
199b4314 TT |
254 | int global, |
255 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 256 | symbol_compare_ftype *ordered_compare); |
ccefe4c4 TT |
257 | |
258 | /* Expand all symbol tables in OBJFILE matching some criteria. | |
259 | ||
260 | FILE_MATCHER is called for each file in OBJFILE. The file name | |
14bc53a8 PA |
261 | is passed to it. If the matcher returns false, the file is |
262 | skipped. If FILE_MATCHER is NULL the file is not skipped. If | |
263 | BASENAMES is true the matcher should consider only file base | |
264 | names (the passed file name is already only the lbasename'd | |
265 | part). | |
ccefe4c4 | 266 | |
c1a66c06 TV |
267 | If the file is not skipped, and SYMBOL_MATCHER and LOOKUP_NAME are NULL, |
268 | the symbol table is expanded. | |
74ccd7f5 | 269 | |
c1a66c06 TV |
270 | Otherwise, individual symbols are considered. |
271 | ||
272 | If KIND does not match, the symbol is skipped. | |
273 | ||
274 | If the symbol name does not match LOOKUP_NAME, the symbol is skipped. | |
ccefe4c4 | 275 | |
14bc53a8 | 276 | If SYMBOL_MATCHER returns false, then the symbol is skipped. |
ccefe4c4 | 277 | |
14bc53a8 | 278 | Otherwise, the symbol's symbol table is expanded. */ |
f8eba3c6 TT |
279 | void (*expand_symtabs_matching) |
280 | (struct objfile *objfile, | |
14bc53a8 | 281 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
c1a66c06 | 282 | const lookup_name_info *lookup_name, |
14bc53a8 PA |
283 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
284 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
285 | enum search_domain kind); | |
ccefe4c4 | 286 | |
43f3e411 DE |
287 | /* Return the comp unit from OBJFILE that contains PC and |
288 | SECTION. Return NULL if there is no such compunit. This | |
289 | should return the compunit that contains a symbol whose | |
ccefe4c4 | 290 | address exactly matches PC, or, if there is no exact match, the |
43f3e411 | 291 | compunit that contains a symbol whose address is closest to |
ccefe4c4 | 292 | PC. */ |
43f3e411 DE |
293 | struct compunit_symtab *(*find_pc_sect_compunit_symtab) |
294 | (struct objfile *objfile, struct bound_minimal_symbol msymbol, | |
295 | CORE_ADDR pc, struct obj_section *section, int warn_if_readin); | |
ccefe4c4 | 296 | |
71a3c369 TT |
297 | /* Return the comp unit from OBJFILE that contains a symbol at |
298 | ADDRESS. Return NULL if there is no such comp unit. Unlike | |
299 | find_pc_sect_compunit_symtab, any sort of symbol (not just text | |
300 | symbols) can be considered, and only exact address matches are | |
301 | considered. This pointer may be NULL. */ | |
302 | struct compunit_symtab *(*find_compunit_symtab_by_address) | |
303 | (struct objfile *objfile, CORE_ADDR address); | |
304 | ||
ad727bb2 | 305 | /* Call a callback for every file defined in OBJFILE whose symtab is |
44b13c5a | 306 | not already read in. FUN is the callback. It is passed the file's |
74e2f255 DE |
307 | FILENAME, the file's FULLNAME (if need_fullname is non-zero), and |
308 | the DATA passed to this function. */ | |
ccefe4c4 | 309 | void (*map_symbol_filenames) (struct objfile *objfile, |
74e2f255 DE |
310 | symbol_filename_ftype *fun, void *data, |
311 | int need_fullname); | |
ccefe4c4 TT |
312 | }; |
313 | ||
55aa24fb SDJ |
314 | /* Structure of functions used for probe support. If one of these functions |
315 | is provided, all must be. */ | |
316 | ||
317 | struct sym_probe_fns | |
318 | { | |
aaa63a31 | 319 | /* If non-NULL, return a reference to vector of probe objects. */ |
814cf43a TT |
320 | const std::vector<std::unique_ptr<probe>> &(*sym_get_probes) |
321 | (struct objfile *); | |
55aa24fb SDJ |
322 | }; |
323 | ||
c906108c SS |
324 | /* Structure to keep track of symbol reading functions for various |
325 | object file types. */ | |
326 | ||
c5aa993b | 327 | struct sym_fns |
3a6c3343 | 328 | { |
3a6c3343 AC |
329 | /* Initializes anything that is global to the entire symbol table. |
330 | It is called during symbol_file_add, when we begin debugging an | |
331 | entirely new program. */ | |
c906108c | 332 | |
3a6c3343 | 333 | void (*sym_new_init) (struct objfile *); |
c906108c | 334 | |
3a6c3343 AC |
335 | /* Reads any initial information from a symbol file, and initializes |
336 | the struct sym_fns SF in preparation for sym_read(). It is | |
337 | called every time we read a symbol file for any reason. */ | |
c906108c | 338 | |
3a6c3343 | 339 | void (*sym_init) (struct objfile *); |
c906108c | 340 | |
f4352531 | 341 | /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab |
3a6c3343 | 342 | (or possibly a symtab). OBJFILE is the objfile struct for the |
f4352531 TG |
343 | file we are reading. SYMFILE_FLAGS are the flags passed to |
344 | symbol_file_add & co. */ | |
c906108c | 345 | |
b15cc25c | 346 | void (*sym_read) (struct objfile *, symfile_add_flags); |
c906108c | 347 | |
3e03848b JK |
348 | /* Read the partial symbols for an objfile. This may be NULL, in which case |
349 | gdb has to check other ways if this objfile has any symbols. This may | |
350 | only be non-NULL if the objfile actually does have debuginfo available. | |
351 | */ | |
b11896a5 TT |
352 | |
353 | void (*sym_read_psymbols) (struct objfile *); | |
354 | ||
3a6c3343 AC |
355 | /* Called when we are finished with an objfile. Should do all |
356 | cleanup that is specific to the object file format for the | |
357 | particular objfile. */ | |
c906108c | 358 | |
3a6c3343 | 359 | void (*sym_finish) (struct objfile *); |
c906108c | 360 | |
db7a9bcd | 361 | |
3a6c3343 | 362 | /* This function produces a file-dependent section_offsets |
db7a9bcd SM |
363 | structure, allocated in the objfile's storage. |
364 | ||
365 | The section_addr_info structure contains the offset of loadable and | |
366 | allocated sections, relative to the absolute offsets found in the BFD. */ | |
c906108c | 367 | |
37e136b1 | 368 | void (*sym_offsets) (struct objfile *, const section_addr_info &); |
c906108c | 369 | |
31d99776 DJ |
370 | /* This function produces a format-independent description of |
371 | the segments of ABFD. Each segment is a unit of the file | |
372 | which may be relocated independently. */ | |
373 | ||
62982abd | 374 | symfile_segment_data_up (*sym_segments) (bfd *abfd); |
31d99776 | 375 | |
c295b2e5 JB |
376 | /* This function should read the linetable from the objfile when |
377 | the line table cannot be read while processing the debugging | |
378 | information. */ | |
ac8035ab | 379 | |
f56ce883 | 380 | void (*sym_read_linetable) (struct objfile *); |
c295b2e5 | 381 | |
ac8035ab TG |
382 | /* Relocate the contents of a debug section SECTP. The |
383 | contents are stored in BUF if it is non-NULL, or returned in a | |
384 | malloc'd buffer otherwise. */ | |
385 | ||
386 | bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf); | |
387 | ||
55aa24fb SDJ |
388 | /* If non-NULL, this objfile has probe support, and all the probe |
389 | functions referred to here will be non-NULL. */ | |
390 | const struct sym_probe_fns *sym_probe_fns; | |
391 | ||
ccefe4c4 TT |
392 | /* The "quick" (aka partial) symbol functions for this symbol |
393 | reader. */ | |
394 | const struct quick_symbol_functions *qf; | |
3a6c3343 | 395 | }; |
c906108c | 396 | |
37e136b1 | 397 | extern section_addr_info |
3e43a32a | 398 | build_section_addr_info_from_objfile (const struct objfile *objfile); |
567995e1 | 399 | |
75242ef4 | 400 | extern void relative_addr_info_to_section_offsets |
6a053cb1 | 401 | (section_offsets §ion_offsets, const section_addr_info &addrs); |
75242ef4 | 402 | |
37e136b1 | 403 | extern void addr_info_make_relative (section_addr_info *addrs, |
75242ef4 JK |
404 | bfd *abfd); |
405 | ||
c906108c SS |
406 | /* The default version of sym_fns.sym_offsets for readers that don't |
407 | do anything special. */ | |
408 | ||
570b8f7c | 409 | extern void default_symfile_offsets (struct objfile *objfile, |
37e136b1 | 410 | const section_addr_info &); |
c906108c | 411 | |
31d99776 DJ |
412 | /* The default version of sym_fns.sym_segments for readers that don't |
413 | do anything special. */ | |
414 | ||
62982abd | 415 | extern symfile_segment_data_up default_symfile_segments (bfd *abfd); |
c906108c | 416 | |
ac8035ab TG |
417 | /* The default version of sym_fns.sym_relocate for readers that don't |
418 | do anything special. */ | |
419 | ||
420 | extern bfd_byte *default_symfile_relocate (struct objfile *objfile, | |
421 | asection *sectp, bfd_byte *buf); | |
422 | ||
43f3e411 | 423 | extern struct symtab *allocate_symtab (struct compunit_symtab *, const char *) |
4e04028d | 424 | ATTRIBUTE_NONNULL (1); |
c906108c | 425 | |
43f3e411 DE |
426 | extern struct compunit_symtab *allocate_compunit_symtab (struct objfile *, |
427 | const char *) | |
428 | ATTRIBUTE_NONNULL (1); | |
429 | ||
430 | extern void add_compunit_symtab_to_objfile (struct compunit_symtab *cu); | |
431 | ||
c256e171 | 432 | extern void add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *); |
c906108c | 433 | |
b15cc25c | 434 | extern void clear_symtab_users (symfile_add_flags add_flags); |
f176c4b5 DE |
435 | |
436 | extern enum language deduce_language_from_filename (const char *); | |
437 | ||
56618e20 TT |
438 | /* Map the filename extension EXT to the language LANG. Any previous |
439 | association of EXT will be removed. EXT will be copied by this | |
440 | function. */ | |
441 | extern void add_filename_language (const char *ext, enum language lang); | |
442 | ||
b15cc25c | 443 | extern struct objfile *symbol_file_add (const char *, symfile_add_flags, |
37e136b1 | 444 | section_addr_info *, objfile_flags); |
7eedccfa | 445 | |
b15cc25c | 446 | extern struct objfile *symbol_file_add_from_bfd (bfd *, const char *, symfile_add_flags, |
37e136b1 | 447 | section_addr_info *, |
b15cc25c | 448 | objfile_flags, struct objfile *parent); |
eb4556d7 | 449 | |
b15cc25c | 450 | extern void symbol_file_add_separate (bfd *, const char *, symfile_add_flags, |
24ba069a | 451 | struct objfile *); |
9cce227f | 452 | |
a8dbfd58 | 453 | extern std::string find_separate_debug_file_by_debuglink (struct objfile *); |
9cce227f | 454 | |
3a6c3343 AC |
455 | /* Build (allocate and populate) a section_addr_info struct from an |
456 | existing section table. */ | |
62557bbc | 457 | |
37e136b1 TT |
458 | extern section_addr_info |
459 | build_section_addr_info_from_section_table (const struct target_section | |
3a6c3343 | 460 | *start, |
0542c86d | 461 | const struct target_section |
3a6c3343 | 462 | *end); |
62557bbc | 463 | |
c906108c SS |
464 | /* Variables */ |
465 | ||
491144b5 | 466 | /* If true, shared library symbols will be added automatically |
b7209cb4 FF |
467 | when the inferior is created, new libraries are loaded, or when |
468 | attaching to the inferior. This is almost always what users will | |
469 | want to have happen; but for very large programs, the startup time | |
470 | will be excessive, and so if this is a problem, the user can clear | |
471 | this flag and then add the shared library symbols as needed. Note | |
472 | that there is a potential for confusion, since if the shared | |
473 | library symbols are not loaded, commands like "info fun" will *not* | |
3a6c3343 | 474 | report all the functions that are actually present. */ |
c906108c | 475 | |
491144b5 | 476 | extern bool auto_solib_add; |
c906108c | 477 | |
c906108c SS |
478 | /* From symfile.c */ |
479 | ||
8b60591b JB |
480 | extern void set_initial_language (void); |
481 | ||
4efb68b1 | 482 | extern void find_lowest_section (bfd *, asection *, void *); |
c906108c | 483 | |
192b62ce | 484 | extern gdb_bfd_ref_ptr symfile_bfd_open (const char *); |
c906108c | 485 | |
a121b7c1 | 486 | extern int get_section_index (struct objfile *, const char *); |
e2f6d8e5 | 487 | |
770e7fc7 DE |
488 | extern int print_symbol_loading_p (int from_tty, int mainline, int full); |
489 | ||
c906108c | 490 | /* Utility functions for overlay sections: */ |
3a6c3343 AC |
491 | extern enum overlay_debugging_state |
492 | { | |
493 | ovly_off, | |
494 | ovly_on, | |
d874f1e2 MS |
495 | ovly_auto |
496 | } overlay_debugging; | |
c906108c SS |
497 | extern int overlay_cache_invalid; |
498 | ||
3a6c3343 | 499 | /* Return the "mapped" overlay section containing the PC. */ |
714835d5 | 500 | extern struct obj_section *find_pc_mapped_section (CORE_ADDR); |
c906108c | 501 | |
3a6c3343 AC |
502 | /* Return any overlay section containing the PC (even in its LMA |
503 | region). */ | |
714835d5 | 504 | extern struct obj_section *find_pc_overlay (CORE_ADDR); |
c906108c | 505 | |
3a6c3343 | 506 | /* Return true if the section is an overlay. */ |
714835d5 | 507 | extern int section_is_overlay (struct obj_section *); |
c906108c | 508 | |
3a6c3343 | 509 | /* Return true if the overlay section is currently "mapped". */ |
714835d5 | 510 | extern int section_is_mapped (struct obj_section *); |
c906108c | 511 | |
3a6c3343 | 512 | /* Return true if pc belongs to section's VMA. */ |
714835d5 | 513 | extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 514 | |
3a6c3343 | 515 | /* Return true if pc belongs to section's LMA. */ |
714835d5 | 516 | extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 517 | |
3a6c3343 | 518 | /* Map an address from a section's LMA to its VMA. */ |
714835d5 | 519 | extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 520 | |
3a6c3343 | 521 | /* Map an address from a section's VMA to its LMA. */ |
714835d5 | 522 | extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 523 | |
3a6c3343 | 524 | /* Convert an address in an overlay section (force into VMA range). */ |
714835d5 | 525 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
c906108c | 526 | |
3a6c3343 | 527 | /* Load symbols from a file. */ |
ecf45d2c SL |
528 | extern void symbol_file_add_main (const char *args, |
529 | symfile_add_flags add_flags); | |
1adeb98a | 530 | |
3a6c3343 | 531 | /* Clear GDB symbol tables. */ |
1adeb98a FN |
532 | extern void symbol_file_clear (int from_tty); |
533 | ||
1c772458 UW |
534 | /* Default overlay update function. */ |
535 | extern void simple_overlay_update (struct obj_section *); | |
536 | ||
ac8035ab TG |
537 | extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, |
538 | bfd_byte *); | |
086df311 | 539 | |
31d99776 | 540 | extern int symfile_map_offsets_to_segments (bfd *, |
3189cb12 | 541 | const struct symfile_segment_data *, |
6a053cb1 | 542 | section_offsets &, |
31d99776 | 543 | int, const CORE_ADDR *); |
62982abd | 544 | symfile_segment_data_up get_symfile_segment_data (bfd *abfd); |
31d99776 | 545 | |
c83dd867 | 546 | extern scoped_restore_tmpl<int> increment_reading_symtab (void); |
ccefe4c4 | 547 | |
14bc53a8 PA |
548 | void expand_symtabs_matching |
549 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 550 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
551 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
552 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
553 | enum search_domain kind); | |
540c2971 | 554 | |
bb4142cf DE |
555 | void map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
556 | int need_fullname); | |
540c2971 | 557 | |
854f6088 SM |
558 | /* Target-agnostic function to load the sections of an executable into memory. |
559 | ||
560 | ARGS should be in the form "EXECUTABLE [OFFSET]", where OFFSET is an | |
561 | optional offset to apply to each section. */ | |
562 | extern void generic_load (const char *args, int from_tty); | |
563 | ||
c906108c SS |
564 | /* From dwarf2read.c */ |
565 | ||
251d32d9 TG |
566 | /* Names for a dwarf2 debugging section. The field NORMAL is the normal |
567 | section name (usually from the DWARF standard), while the field COMPRESSED | |
568 | is the name of compressed sections. If your object file format doesn't | |
569 | support compressed sections, the field COMPRESSED can be NULL. Likewise, | |
570 | the debugging section is not supported, the field NORMAL can be NULL too. | |
571 | It doesn't make sense to have a NULL NORMAL field but a non-NULL COMPRESSED | |
572 | field. */ | |
573 | ||
574 | struct dwarf2_section_names { | |
575 | const char *normal; | |
576 | const char *compressed; | |
577 | }; | |
578 | ||
579 | /* List of names for dward2 debugging sections. Also most object file formats | |
580 | use the standardized (ie ELF) names, some (eg XCOFF) have customized names | |
581 | due to restrictions. | |
582 | The table for the standard names is defined in dwarf2read.c. Please | |
583 | update all instances of dwarf2_debug_sections if you add a field to this | |
584 | structure. It is always safe to use { NULL, NULL } in this case. */ | |
585 | ||
586 | struct dwarf2_debug_sections { | |
587 | struct dwarf2_section_names info; | |
588 | struct dwarf2_section_names abbrev; | |
589 | struct dwarf2_section_names line; | |
590 | struct dwarf2_section_names loc; | |
43988095 | 591 | struct dwarf2_section_names loclists; |
251d32d9 | 592 | struct dwarf2_section_names macinfo; |
cf2c3c16 | 593 | struct dwarf2_section_names macro; |
251d32d9 | 594 | struct dwarf2_section_names str; |
18a8505e | 595 | struct dwarf2_section_names str_offsets; |
43988095 | 596 | struct dwarf2_section_names line_str; |
251d32d9 | 597 | struct dwarf2_section_names ranges; |
43988095 | 598 | struct dwarf2_section_names rnglists; |
251d32d9 | 599 | struct dwarf2_section_names types; |
3019eac3 | 600 | struct dwarf2_section_names addr; |
251d32d9 TG |
601 | struct dwarf2_section_names frame; |
602 | struct dwarf2_section_names eh_frame; | |
603 | struct dwarf2_section_names gdb_index; | |
927aa2e7 JK |
604 | struct dwarf2_section_names debug_names; |
605 | struct dwarf2_section_names debug_aranges; | |
24d3216f TT |
606 | /* This field has no meaning, but exists solely to catch changes to |
607 | this structure which are not reflected in some instance. */ | |
608 | int sentinel; | |
251d32d9 TG |
609 | }; |
610 | ||
611 | extern int dwarf2_has_info (struct objfile *, | |
4b610737 TT |
612 | const struct dwarf2_debug_sections *, |
613 | bool = false); | |
c906108c | 614 | |
3017a003 TG |
615 | /* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */ |
616 | enum dwarf2_section_enum { | |
617 | DWARF2_DEBUG_FRAME, | |
618 | DWARF2_EH_FRAME | |
619 | }; | |
620 | ||
621 | extern void dwarf2_get_section_info (struct objfile *, | |
622 | enum dwarf2_section_enum, | |
d521ce57 | 623 | asection **, const gdb_byte **, |
3017a003 TG |
624 | bfd_size_type *); |
625 | ||
3c0aa29a PA |
626 | /* A DWARF names index variant. */ |
627 | enum class dw_index_kind | |
628 | { | |
629 | /* GDB's own .gdb_index format. */ | |
630 | GDB_INDEX, | |
631 | ||
632 | /* DWARF5 .debug_names. */ | |
633 | DEBUG_NAMES, | |
634 | }; | |
635 | ||
636 | /* Initialize for reading DWARF for OBJFILE. Return false if this | |
637 | file will use psymtabs, or true if using an index, in which case | |
638 | *INDEX_KIND is set to the index variant in use. */ | |
639 | extern bool dwarf2_initialize_objfile (struct objfile *objfile, | |
640 | dw_index_kind *index_kind); | |
641 | ||
f29dff0a | 642 | extern void dwarf2_build_psymtabs (struct objfile *); |
b6af0555 | 643 | extern void dwarf2_build_frame_info (struct objfile *); |
d4f3574e | 644 | |
0e8f53ba | 645 | void dwarf2_free_objfile (struct objfile *); |
c906108c | 646 | |
608e2dbb TT |
647 | /* From minidebug.c. */ |
648 | ||
192b62ce | 649 | extern gdb_bfd_ref_ptr find_separate_debug_file_in_section (struct objfile *); |
608e2dbb | 650 | |
c4dcb155 SM |
651 | /* True if we are printing debug output about separate debug info files. */ |
652 | ||
491144b5 | 653 | extern bool separate_debug_file_debug; |
c4dcb155 | 654 | |
c5aa993b | 655 | #endif /* !defined(SYMFILE_H) */ |