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c906108c | 1 | /* Definitions for reading symbol files into GDB. |
3a6c3343 | 2 | |
61baf725 | 3 | Copyright (C) 1990-2017 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" |
14bc53a8 | 29 | #include "common/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 probe; |
38 | struct value; | |
39 | struct frame_info; | |
40 | struct agent_expr; | |
41 | struct axs_value; | |
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 | ||
3a6c3343 AC |
48 | /* Partial symbols are stored in the psymbol_cache and pointers to |
49 | them are kept in a dynamically grown array that is obtained from | |
50 | malloc and grown as necessary via realloc. Each objfile typically | |
51 | has two of these, one for global symbols and one for static | |
52 | symbols. Although this adds a level of indirection for storing or | |
53 | accessing the partial symbols, it allows us to throw away duplicate | |
54 | psymbols and set all pointers to the single saved instance. */ | |
c906108c | 55 | |
c5aa993b | 56 | struct psymbol_allocation_list |
3a6c3343 | 57 | { |
c906108c | 58 | |
3a6c3343 AC |
59 | /* Pointer to beginning of dynamically allocated array of pointers |
60 | to partial symbols. The array is dynamically expanded as | |
61 | necessary to accommodate more pointers. */ | |
c906108c | 62 | |
3a6c3343 | 63 | struct partial_symbol **list; |
c906108c | 64 | |
3a6c3343 AC |
65 | /* Pointer to next available slot in which to store a pointer to a |
66 | partial symbol. */ | |
c906108c | 67 | |
3a6c3343 | 68 | struct partial_symbol **next; |
c906108c | 69 | |
3a6c3343 AC |
70 | /* Number of allocated pointer slots in current dynamic array (not |
71 | the number of bytes of storage). The "next" pointer will always | |
72 | point somewhere between list[0] and list[size], and when at | |
73 | list[size] the array will be expanded on the next attempt to | |
74 | store a pointer. */ | |
c906108c | 75 | |
3a6c3343 AC |
76 | int size; |
77 | }; | |
c906108c | 78 | |
52059ffd TT |
79 | struct other_sections |
80 | { | |
81 | CORE_ADDR addr; | |
82 | char *name; | |
83 | ||
84 | /* SECTINDEX must be valid for associated BFD or set to -1. */ | |
85 | int sectindex; | |
86 | }; | |
87 | ||
62557bbc KB |
88 | /* Define an array of addresses to accommodate non-contiguous dynamic |
89 | loading of modules. This is for use when entering commands, so we | |
3a6c3343 AC |
90 | can keep track of the section names until we read the file and can |
91 | map them to bfd sections. This structure is also used by solib.c | |
92 | to communicate the section addresses in shared objects to | |
93 | symbol_file_add (). */ | |
94 | ||
95 | struct section_addr_info | |
62557bbc | 96 | { |
a39a16c4 MM |
97 | /* The number of sections for which address information is |
98 | available. */ | |
99 | size_t num_sections; | |
c378eb4e | 100 | /* Sections whose names are file format dependent. */ |
52059ffd | 101 | struct other_sections other[1]; |
62557bbc KB |
102 | }; |
103 | ||
28c32713 JB |
104 | |
105 | /* A table listing the load segments in a symfile, and which segment | |
106 | each BFD section belongs to. */ | |
31d99776 DJ |
107 | struct symfile_segment_data |
108 | { | |
109 | /* How many segments are present in this file. If there are | |
110 | two, the text segment is the first one and the data segment | |
111 | is the second one. */ | |
112 | int num_segments; | |
113 | ||
114 | /* If NUM_SEGMENTS is greater than zero, the original base address | |
115 | of each segment. */ | |
116 | CORE_ADDR *segment_bases; | |
117 | ||
118 | /* If NUM_SEGMENTS is greater than zero, the memory size of each | |
119 | segment. */ | |
120 | CORE_ADDR *segment_sizes; | |
121 | ||
122 | /* If NUM_SEGMENTS is greater than zero, this is an array of entries | |
28c32713 JB |
123 | recording which segment contains each BFD section. |
124 | SEGMENT_INFO[I] is S+1 if the I'th BFD section belongs to segment | |
125 | S, or zero if it is not in any segment. */ | |
31d99776 DJ |
126 | int *segment_info; |
127 | }; | |
128 | ||
44b13c5a JK |
129 | /* Callback for quick_symbol_functions->map_symbol_filenames. */ |
130 | ||
131 | typedef void (symbol_filename_ftype) (const char *filename, | |
132 | const char *fullname, void *data); | |
133 | ||
206f2a57 DE |
134 | /* Callback for quick_symbol_functions->expand_symtabs_matching |
135 | to match a file name. */ | |
136 | ||
14bc53a8 PA |
137 | typedef bool (expand_symtabs_file_matcher_ftype) (const char *filename, |
138 | bool basenames); | |
206f2a57 DE |
139 | |
140 | /* Callback for quick_symbol_functions->expand_symtabs_matching | |
141 | to match a symbol name. */ | |
142 | ||
14bc53a8 | 143 | typedef bool (expand_symtabs_symbol_matcher_ftype) (const char *name); |
206f2a57 | 144 | |
276d885b GB |
145 | /* Callback for quick_symbol_functions->expand_symtabs_matching |
146 | to be called after a symtab has been expanded. */ | |
147 | ||
14bc53a8 | 148 | typedef void (expand_symtabs_exp_notify_ftype) (compunit_symtab *symtab); |
276d885b | 149 | |
ccefe4c4 TT |
150 | /* The "quick" symbol functions exist so that symbol readers can |
151 | avoiding an initial read of all the symbols. For example, symbol | |
152 | readers might choose to use the "partial symbol table" utilities, | |
153 | which is one implementation of the quick symbol functions. | |
154 | ||
155 | The quick symbol functions are generally opaque: the underlying | |
156 | representation is hidden from the caller. | |
157 | ||
158 | In general, these functions should only look at whatever special | |
159 | index the symbol reader creates -- looking through the symbol | |
160 | tables themselves is handled by generic code. If a function is | |
161 | defined as returning a "symbol table", this means that the function | |
162 | should only return a newly-created symbol table; it should not | |
163 | examine pre-existing ones. | |
164 | ||
165 | The exact list of functions here was determined in an ad hoc way | |
166 | based on gdb's history. */ | |
167 | ||
168 | struct quick_symbol_functions | |
169 | { | |
170 | /* Return true if this objfile has any "partial" symbols | |
171 | available. */ | |
172 | int (*has_symbols) (struct objfile *objfile); | |
173 | ||
174 | /* Return the symbol table for the "last" file appearing in | |
175 | OBJFILE. */ | |
176 | struct symtab *(*find_last_source_symtab) (struct objfile *objfile); | |
177 | ||
178 | /* Forget all cached full file names for OBJFILE. */ | |
179 | void (*forget_cached_source_info) (struct objfile *objfile); | |
180 | ||
f8eba3c6 TT |
181 | /* Expand and iterate over each "partial" symbol table in OBJFILE |
182 | where the source file is named NAME. | |
183 | ||
af529f8f JK |
184 | If NAME is not absolute, a match after a '/' in the symbol table's |
185 | file name will also work, REAL_PATH is NULL then. If NAME is | |
186 | absolute then REAL_PATH is non-NULL absolute file name as resolved | |
187 | via gdb_realpath from NAME. | |
f8eba3c6 TT |
188 | |
189 | If a match is found, the "partial" symbol table is expanded. | |
190 | Then, this calls iterate_over_some_symtabs (or equivalent) over | |
14bc53a8 | 191 | all newly-created symbol tables, passing CALLBACK to it. |
f8eba3c6 | 192 | The result of this call is returned. */ |
14bc53a8 PA |
193 | bool (*map_symtabs_matching_filename) |
194 | (struct objfile *objfile, const char *name, const char *real_path, | |
195 | gdb::function_view<bool (symtab *)> callback); | |
ccefe4c4 TT |
196 | |
197 | /* Check to see if the symbol is defined in a "partial" symbol table | |
f88cb4b6 | 198 | of OBJFILE. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, |
ccefe4c4 TT |
199 | depending on whether we want to search global symbols or static |
200 | symbols. NAME is the name of the symbol to look for. DOMAIN | |
201 | indicates what sort of symbol to search for. | |
202 | ||
43f3e411 | 203 | Returns the newly-expanded compunit in which the symbol is |
bfb05775 | 204 | defined, or NULL if no such symbol table exists. If OBJFILE |
43f3e411 DE |
205 | contains !TYPE_OPAQUE symbol prefer its compunit. If it contains |
206 | only TYPE_OPAQUE symbol(s), return at least that compunit. */ | |
207 | struct compunit_symtab *(*lookup_symbol) (struct objfile *objfile, | |
208 | int block_index, const char *name, | |
209 | domain_enum domain); | |
ccefe4c4 TT |
210 | |
211 | /* Print statistics about any indices loaded for OBJFILE. The | |
212 | statistics should be printed to gdb_stdout. This is used for | |
213 | "maint print statistics". */ | |
214 | void (*print_stats) (struct objfile *objfile); | |
215 | ||
216 | /* Dump any indices loaded for OBJFILE. The dump should go to | |
217 | gdb_stdout. This is used for "maint print objfiles". */ | |
218 | void (*dump) (struct objfile *objfile); | |
219 | ||
220 | /* This is called by objfile_relocate to relocate any indices loaded | |
221 | for OBJFILE. */ | |
222 | void (*relocate) (struct objfile *objfile, | |
3189cb12 DE |
223 | const struct section_offsets *new_offsets, |
224 | const struct section_offsets *delta); | |
ccefe4c4 TT |
225 | |
226 | /* Find all the symbols in OBJFILE named FUNC_NAME, and ensure that | |
227 | the corresponding symbol tables are loaded. */ | |
228 | void (*expand_symtabs_for_function) (struct objfile *objfile, | |
229 | const char *func_name); | |
230 | ||
231 | /* Read all symbol tables associated with OBJFILE. */ | |
232 | void (*expand_all_symtabs) (struct objfile *objfile); | |
233 | ||
652a8996 JK |
234 | /* Read all symbol tables associated with OBJFILE which have |
235 | symtab_to_fullname equal to FULLNAME. | |
d4637a04 DE |
236 | This is for the purposes of examining code only, e.g., expand_line_sal. |
237 | The routine may ignore debug info that is known to not be useful with | |
238 | code, e.g., DW_TAG_type_unit for dwarf debug info. */ | |
652a8996 JK |
239 | void (*expand_symtabs_with_fullname) (struct objfile *objfile, |
240 | const char *fullname); | |
ccefe4c4 | 241 | |
fe978cb0 | 242 | /* Find global or static symbols in all tables that are in DOMAIN |
40658b94 | 243 | and for which MATCH (symbol name, NAME) == 0, passing each to |
265e52c3 | 244 | CALLBACK, reading in partial symbol tables as needed. Look |
c378eb4e | 245 | through global symbols if GLOBAL and otherwise static symbols. |
40658b94 PH |
246 | Passes NAME, NAMESPACE, and DATA to CALLBACK with each symbol |
247 | found. After each block is processed, passes NULL to CALLBACK. | |
1e3a8f45 JB |
248 | MATCH must be weaker than strcmp_iw_ordered in the sense that |
249 | strcmp_iw_ordered(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE, | |
250 | if non-null, must be an ordering relation compatible with | |
251 | strcmp_iw_ordered in the sense that | |
252 | strcmp_iw_ordered(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0 | |
40658b94 | 253 | and |
1e3a8f45 JB |
254 | strcmp_iw_ordered(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0 |
255 | (allowing strcmp_iw_ordered(x,y) < 0 while ORDERED_COMPARE(x, y) == 0). | |
40658b94 PH |
256 | CALLBACK returns 0 to indicate that the scan should continue, or |
257 | non-zero to indicate that the scan should be terminated. */ | |
258 | ||
ade7ed9e | 259 | void (*map_matching_symbols) (struct objfile *, |
fe978cb0 | 260 | const char *name, domain_enum domain, |
ade7ed9e | 261 | int global, |
40658b94 PH |
262 | int (*callback) (struct block *, |
263 | struct symbol *, void *), | |
264 | void *data, | |
2edb89d3 JK |
265 | symbol_compare_ftype *match, |
266 | symbol_compare_ftype *ordered_compare); | |
ccefe4c4 TT |
267 | |
268 | /* Expand all symbol tables in OBJFILE matching some criteria. | |
269 | ||
270 | FILE_MATCHER is called for each file in OBJFILE. The file name | |
14bc53a8 PA |
271 | is passed to it. If the matcher returns false, the file is |
272 | skipped. If FILE_MATCHER is NULL the file is not skipped. If | |
273 | BASENAMES is true the matcher should consider only file base | |
274 | names (the passed file name is already only the lbasename'd | |
275 | part). | |
ccefe4c4 | 276 | |
14bc53a8 | 277 | Otherwise, if KIND does not match, this symbol is skipped. |
74ccd7f5 | 278 | |
14bc53a8 PA |
279 | If even KIND matches, SYMBOL_MATCHER is called for each symbol |
280 | defined in the file. The symbol "search" name is passed to | |
281 | SYMBOL_MATCHER. | |
ccefe4c4 | 282 | |
14bc53a8 | 283 | If SYMBOL_MATCHER returns false, then the symbol is skipped. |
ccefe4c4 | 284 | |
14bc53a8 | 285 | Otherwise, the symbol's symbol table is expanded. */ |
f8eba3c6 TT |
286 | void (*expand_symtabs_matching) |
287 | (struct objfile *objfile, | |
14bc53a8 PA |
288 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
289 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
290 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
291 | enum search_domain kind); | |
ccefe4c4 | 292 | |
43f3e411 DE |
293 | /* Return the comp unit from OBJFILE that contains PC and |
294 | SECTION. Return NULL if there is no such compunit. This | |
295 | should return the compunit that contains a symbol whose | |
ccefe4c4 | 296 | address exactly matches PC, or, if there is no exact match, the |
43f3e411 | 297 | compunit that contains a symbol whose address is closest to |
ccefe4c4 | 298 | PC. */ |
43f3e411 DE |
299 | struct compunit_symtab *(*find_pc_sect_compunit_symtab) |
300 | (struct objfile *objfile, struct bound_minimal_symbol msymbol, | |
301 | CORE_ADDR pc, struct obj_section *section, int warn_if_readin); | |
ccefe4c4 | 302 | |
ad727bb2 | 303 | /* Call a callback for every file defined in OBJFILE whose symtab is |
44b13c5a | 304 | not already read in. FUN is the callback. It is passed the file's |
74e2f255 DE |
305 | FILENAME, the file's FULLNAME (if need_fullname is non-zero), and |
306 | the DATA passed to this function. */ | |
ccefe4c4 | 307 | void (*map_symbol_filenames) (struct objfile *objfile, |
74e2f255 DE |
308 | symbol_filename_ftype *fun, void *data, |
309 | int need_fullname); | |
ccefe4c4 TT |
310 | }; |
311 | ||
55aa24fb SDJ |
312 | /* Structure of functions used for probe support. If one of these functions |
313 | is provided, all must be. */ | |
314 | ||
315 | struct sym_probe_fns | |
316 | { | |
aaa63a31 SM |
317 | /* If non-NULL, return a reference to vector of probe objects. */ |
318 | const std::vector<probe *> &(*sym_get_probes) (struct objfile *); | |
55aa24fb SDJ |
319 | }; |
320 | ||
c906108c SS |
321 | /* Structure to keep track of symbol reading functions for various |
322 | object file types. */ | |
323 | ||
c5aa993b | 324 | struct sym_fns |
3a6c3343 | 325 | { |
3a6c3343 AC |
326 | /* Initializes anything that is global to the entire symbol table. |
327 | It is called during symbol_file_add, when we begin debugging an | |
328 | entirely new program. */ | |
c906108c | 329 | |
3a6c3343 | 330 | void (*sym_new_init) (struct objfile *); |
c906108c | 331 | |
3a6c3343 AC |
332 | /* Reads any initial information from a symbol file, and initializes |
333 | the struct sym_fns SF in preparation for sym_read(). It is | |
334 | called every time we read a symbol file for any reason. */ | |
c906108c | 335 | |
3a6c3343 | 336 | void (*sym_init) (struct objfile *); |
c906108c | 337 | |
f4352531 | 338 | /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab |
3a6c3343 | 339 | (or possibly a symtab). OBJFILE is the objfile struct for the |
f4352531 TG |
340 | file we are reading. SYMFILE_FLAGS are the flags passed to |
341 | symbol_file_add & co. */ | |
c906108c | 342 | |
b15cc25c | 343 | void (*sym_read) (struct objfile *, symfile_add_flags); |
c906108c | 344 | |
3e03848b JK |
345 | /* Read the partial symbols for an objfile. This may be NULL, in which case |
346 | gdb has to check other ways if this objfile has any symbols. This may | |
347 | only be non-NULL if the objfile actually does have debuginfo available. | |
348 | */ | |
b11896a5 TT |
349 | |
350 | void (*sym_read_psymbols) (struct objfile *); | |
351 | ||
3a6c3343 AC |
352 | /* Called when we are finished with an objfile. Should do all |
353 | cleanup that is specific to the object file format for the | |
354 | particular objfile. */ | |
c906108c | 355 | |
3a6c3343 | 356 | void (*sym_finish) (struct objfile *); |
c906108c | 357 | |
db7a9bcd | 358 | |
3a6c3343 | 359 | /* This function produces a file-dependent section_offsets |
db7a9bcd SM |
360 | structure, allocated in the objfile's storage. |
361 | ||
362 | The section_addr_info structure contains the offset of loadable and | |
363 | allocated sections, relative to the absolute offsets found in the BFD. */ | |
c906108c | 364 | |
3189cb12 | 365 | void (*sym_offsets) (struct objfile *, const struct section_addr_info *); |
c906108c | 366 | |
31d99776 DJ |
367 | /* This function produces a format-independent description of |
368 | the segments of ABFD. Each segment is a unit of the file | |
369 | which may be relocated independently. */ | |
370 | ||
371 | struct symfile_segment_data *(*sym_segments) (bfd *abfd); | |
372 | ||
c295b2e5 JB |
373 | /* This function should read the linetable from the objfile when |
374 | the line table cannot be read while processing the debugging | |
375 | information. */ | |
ac8035ab | 376 | |
f56ce883 | 377 | void (*sym_read_linetable) (struct objfile *); |
c295b2e5 | 378 | |
ac8035ab TG |
379 | /* Relocate the contents of a debug section SECTP. The |
380 | contents are stored in BUF if it is non-NULL, or returned in a | |
381 | malloc'd buffer otherwise. */ | |
382 | ||
383 | bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf); | |
384 | ||
55aa24fb SDJ |
385 | /* If non-NULL, this objfile has probe support, and all the probe |
386 | functions referred to here will be non-NULL. */ | |
387 | const struct sym_probe_fns *sym_probe_fns; | |
388 | ||
ccefe4c4 TT |
389 | /* The "quick" (aka partial) symbol functions for this symbol |
390 | reader. */ | |
391 | const struct quick_symbol_functions *qf; | |
3a6c3343 | 392 | }; |
c906108c | 393 | |
567995e1 | 394 | extern struct section_addr_info * |
3e43a32a | 395 | build_section_addr_info_from_objfile (const struct objfile *objfile); |
567995e1 | 396 | |
75242ef4 JK |
397 | extern void relative_addr_info_to_section_offsets |
398 | (struct section_offsets *section_offsets, int num_sections, | |
3189cb12 | 399 | const struct section_addr_info *addrs); |
75242ef4 JK |
400 | |
401 | extern void addr_info_make_relative (struct section_addr_info *addrs, | |
402 | bfd *abfd); | |
403 | ||
c906108c SS |
404 | /* The default version of sym_fns.sym_offsets for readers that don't |
405 | do anything special. */ | |
406 | ||
570b8f7c | 407 | extern void default_symfile_offsets (struct objfile *objfile, |
3189cb12 | 408 | const struct section_addr_info *); |
c906108c | 409 | |
31d99776 DJ |
410 | /* The default version of sym_fns.sym_segments for readers that don't |
411 | do anything special. */ | |
412 | ||
413 | extern struct symfile_segment_data *default_symfile_segments (bfd *abfd); | |
c906108c | 414 | |
ac8035ab TG |
415 | /* The default version of sym_fns.sym_relocate for readers that don't |
416 | do anything special. */ | |
417 | ||
418 | extern bfd_byte *default_symfile_relocate (struct objfile *objfile, | |
419 | asection *sectp, bfd_byte *buf); | |
420 | ||
43f3e411 | 421 | extern struct symtab *allocate_symtab (struct compunit_symtab *, const char *) |
4e04028d | 422 | ATTRIBUTE_NONNULL (1); |
c906108c | 423 | |
43f3e411 DE |
424 | extern struct compunit_symtab *allocate_compunit_symtab (struct objfile *, |
425 | const char *) | |
426 | ATTRIBUTE_NONNULL (1); | |
427 | ||
428 | extern void add_compunit_symtab_to_objfile (struct compunit_symtab *cu); | |
429 | ||
c256e171 | 430 | extern void add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *); |
c906108c | 431 | |
b15cc25c | 432 | extern void clear_symtab_users (symfile_add_flags add_flags); |
f176c4b5 DE |
433 | |
434 | extern enum language deduce_language_from_filename (const char *); | |
435 | ||
56618e20 TT |
436 | /* Map the filename extension EXT to the language LANG. Any previous |
437 | association of EXT will be removed. EXT will be copied by this | |
438 | function. */ | |
439 | extern void add_filename_language (const char *ext, enum language lang); | |
440 | ||
b15cc25c PA |
441 | extern struct objfile *symbol_file_add (const char *, symfile_add_flags, |
442 | struct section_addr_info *, objfile_flags); | |
7eedccfa | 443 | |
b15cc25c | 444 | extern struct objfile *symbol_file_add_from_bfd (bfd *, const char *, symfile_add_flags, |
eb4556d7 | 445 | struct section_addr_info *, |
b15cc25c | 446 | objfile_flags, struct objfile *parent); |
eb4556d7 | 447 | |
b15cc25c | 448 | extern void symbol_file_add_separate (bfd *, const char *, symfile_add_flags, |
24ba069a | 449 | struct objfile *); |
9cce227f | 450 | |
15d123c9 | 451 | extern char *find_separate_debug_file_by_debuglink (struct objfile *); |
9cce227f | 452 | |
a39a16c4 MM |
453 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
454 | ||
3a6c3343 AC |
455 | extern struct section_addr_info *alloc_section_addr_info (size_t |
456 | num_sections); | |
a39a16c4 | 457 | |
3a6c3343 AC |
458 | /* Build (allocate and populate) a section_addr_info struct from an |
459 | existing section table. */ | |
62557bbc | 460 | |
3a6c3343 | 461 | extern struct section_addr_info |
0542c86d | 462 | *build_section_addr_info_from_section_table (const struct target_section |
3a6c3343 | 463 | *start, |
0542c86d | 464 | const struct target_section |
3a6c3343 | 465 | *end); |
62557bbc | 466 | |
3a6c3343 AC |
467 | /* Free all memory allocated by |
468 | build_section_addr_info_from_section_table. */ | |
62557bbc | 469 | |
570b8f7c | 470 | extern void free_section_addr_info (struct section_addr_info *); |
62557bbc KB |
471 | |
472 | ||
c906108c SS |
473 | /* Variables */ |
474 | ||
b7209cb4 FF |
475 | /* If non-zero, shared library symbols will be added automatically |
476 | when the inferior is created, new libraries are loaded, or when | |
477 | attaching to the inferior. This is almost always what users will | |
478 | want to have happen; but for very large programs, the startup time | |
479 | will be excessive, and so if this is a problem, the user can clear | |
480 | this flag and then add the shared library symbols as needed. Note | |
481 | that there is a potential for confusion, since if the shared | |
482 | library symbols are not loaded, commands like "info fun" will *not* | |
3a6c3343 | 483 | report all the functions that are actually present. */ |
c906108c | 484 | |
b7209cb4 | 485 | extern int auto_solib_add; |
c906108c | 486 | |
c906108c SS |
487 | /* From symfile.c */ |
488 | ||
8b60591b JB |
489 | extern void set_initial_language (void); |
490 | ||
4efb68b1 | 491 | extern void find_lowest_section (bfd *, asection *, void *); |
c906108c | 492 | |
192b62ce | 493 | extern gdb_bfd_ref_ptr symfile_bfd_open (const char *); |
c906108c | 494 | |
a121b7c1 | 495 | extern int get_section_index (struct objfile *, const char *); |
e2f6d8e5 | 496 | |
770e7fc7 DE |
497 | extern int print_symbol_loading_p (int from_tty, int mainline, int full); |
498 | ||
c906108c | 499 | /* Utility functions for overlay sections: */ |
3a6c3343 AC |
500 | extern enum overlay_debugging_state |
501 | { | |
502 | ovly_off, | |
503 | ovly_on, | |
d874f1e2 MS |
504 | ovly_auto |
505 | } overlay_debugging; | |
c906108c SS |
506 | extern int overlay_cache_invalid; |
507 | ||
3a6c3343 | 508 | /* Return the "mapped" overlay section containing the PC. */ |
714835d5 | 509 | extern struct obj_section *find_pc_mapped_section (CORE_ADDR); |
c906108c | 510 | |
3a6c3343 AC |
511 | /* Return any overlay section containing the PC (even in its LMA |
512 | region). */ | |
714835d5 | 513 | extern struct obj_section *find_pc_overlay (CORE_ADDR); |
c906108c | 514 | |
3a6c3343 | 515 | /* Return true if the section is an overlay. */ |
714835d5 | 516 | extern int section_is_overlay (struct obj_section *); |
c906108c | 517 | |
3a6c3343 | 518 | /* Return true if the overlay section is currently "mapped". */ |
714835d5 | 519 | extern int section_is_mapped (struct obj_section *); |
c906108c | 520 | |
3a6c3343 | 521 | /* Return true if pc belongs to section's VMA. */ |
714835d5 | 522 | extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 523 | |
3a6c3343 | 524 | /* Return true if pc belongs to section's LMA. */ |
714835d5 | 525 | extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 526 | |
3a6c3343 | 527 | /* Map an address from a section's LMA to its VMA. */ |
714835d5 | 528 | extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 529 | |
3a6c3343 | 530 | /* Map an address from a section's VMA to its LMA. */ |
714835d5 | 531 | extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 532 | |
3a6c3343 | 533 | /* Convert an address in an overlay section (force into VMA range). */ |
714835d5 | 534 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
c906108c | 535 | |
3a6c3343 | 536 | /* Load symbols from a file. */ |
ecf45d2c SL |
537 | extern void symbol_file_add_main (const char *args, |
538 | symfile_add_flags add_flags); | |
1adeb98a | 539 | |
3a6c3343 | 540 | /* Clear GDB symbol tables. */ |
1adeb98a FN |
541 | extern void symbol_file_clear (int from_tty); |
542 | ||
1c772458 UW |
543 | /* Default overlay update function. */ |
544 | extern void simple_overlay_update (struct obj_section *); | |
545 | ||
ac8035ab TG |
546 | extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, |
547 | bfd_byte *); | |
086df311 | 548 | |
31d99776 | 549 | extern int symfile_map_offsets_to_segments (bfd *, |
3189cb12 | 550 | const struct symfile_segment_data *, |
31d99776 DJ |
551 | struct section_offsets *, |
552 | int, const CORE_ADDR *); | |
553 | struct symfile_segment_data *get_symfile_segment_data (bfd *abfd); | |
554 | void free_symfile_segment_data (struct symfile_segment_data *data); | |
555 | ||
c83dd867 | 556 | extern scoped_restore_tmpl<int> increment_reading_symtab (void); |
ccefe4c4 | 557 | |
14bc53a8 PA |
558 | void expand_symtabs_matching |
559 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
560 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
561 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
562 | enum search_domain kind); | |
540c2971 | 563 | |
bb4142cf DE |
564 | void map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
565 | int need_fullname); | |
540c2971 | 566 | |
c906108c SS |
567 | /* From dwarf2read.c */ |
568 | ||
251d32d9 TG |
569 | /* Names for a dwarf2 debugging section. The field NORMAL is the normal |
570 | section name (usually from the DWARF standard), while the field COMPRESSED | |
571 | is the name of compressed sections. If your object file format doesn't | |
572 | support compressed sections, the field COMPRESSED can be NULL. Likewise, | |
573 | the debugging section is not supported, the field NORMAL can be NULL too. | |
574 | It doesn't make sense to have a NULL NORMAL field but a non-NULL COMPRESSED | |
575 | field. */ | |
576 | ||
577 | struct dwarf2_section_names { | |
578 | const char *normal; | |
579 | const char *compressed; | |
580 | }; | |
581 | ||
582 | /* List of names for dward2 debugging sections. Also most object file formats | |
583 | use the standardized (ie ELF) names, some (eg XCOFF) have customized names | |
584 | due to restrictions. | |
585 | The table for the standard names is defined in dwarf2read.c. Please | |
586 | update all instances of dwarf2_debug_sections if you add a field to this | |
587 | structure. It is always safe to use { NULL, NULL } in this case. */ | |
588 | ||
589 | struct dwarf2_debug_sections { | |
590 | struct dwarf2_section_names info; | |
591 | struct dwarf2_section_names abbrev; | |
592 | struct dwarf2_section_names line; | |
593 | struct dwarf2_section_names loc; | |
43988095 | 594 | struct dwarf2_section_names loclists; |
251d32d9 | 595 | struct dwarf2_section_names macinfo; |
cf2c3c16 | 596 | struct dwarf2_section_names macro; |
251d32d9 | 597 | struct dwarf2_section_names str; |
43988095 | 598 | struct dwarf2_section_names line_str; |
251d32d9 | 599 | struct dwarf2_section_names ranges; |
43988095 | 600 | struct dwarf2_section_names rnglists; |
251d32d9 | 601 | struct dwarf2_section_names types; |
3019eac3 | 602 | struct dwarf2_section_names addr; |
251d32d9 TG |
603 | struct dwarf2_section_names frame; |
604 | struct dwarf2_section_names eh_frame; | |
605 | struct dwarf2_section_names gdb_index; | |
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 *, | |
612 | const struct dwarf2_debug_sections *); | |
c906108c | 613 | |
3017a003 TG |
614 | /* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */ |
615 | enum dwarf2_section_enum { | |
616 | DWARF2_DEBUG_FRAME, | |
617 | DWARF2_EH_FRAME | |
618 | }; | |
619 | ||
620 | extern void dwarf2_get_section_info (struct objfile *, | |
621 | enum dwarf2_section_enum, | |
d521ce57 | 622 | asection **, const gdb_byte **, |
3017a003 TG |
623 | bfd_size_type *); |
624 | ||
9291a0cd | 625 | extern int dwarf2_initialize_objfile (struct objfile *); |
f29dff0a | 626 | extern void dwarf2_build_psymtabs (struct objfile *); |
b6af0555 | 627 | extern void dwarf2_build_frame_info (struct objfile *); |
d4f3574e | 628 | |
fe3e1990 DJ |
629 | void dwarf2_free_objfile (struct objfile *); |
630 | ||
c906108c SS |
631 | /* From mdebugread.c */ |
632 | ||
8dddcb8f TT |
633 | extern void mdebug_build_psymtabs (minimal_symbol_reader &, |
634 | struct objfile *, | |
3a6c3343 AC |
635 | const struct ecoff_debug_swap *, |
636 | struct ecoff_debug_info *); | |
637 | ||
638 | extern void elfmdebug_build_psymtabs (struct objfile *, | |
639 | const struct ecoff_debug_swap *, | |
640 | asection *); | |
c906108c | 641 | |
608e2dbb TT |
642 | /* From minidebug.c. */ |
643 | ||
192b62ce | 644 | extern gdb_bfd_ref_ptr find_separate_debug_file_in_section (struct objfile *); |
608e2dbb | 645 | |
c4dcb155 SM |
646 | /* True if we are printing debug output about separate debug info files. */ |
647 | ||
648 | extern int separate_debug_file_debug; | |
649 | ||
c5aa993b | 650 | #endif /* !defined(SYMFILE_H) */ |