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c906108c | 1 | /* Definitions for reading symbol files into GDB. |
3a6c3343 | 2 | |
e2882c85 | 3 | Copyright (C) 1990-2018 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 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 TT |
63 | |
64 | /* SECTINDEX must be valid for associated BFD or set to -1. */ | |
65 | int sectindex; | |
66 | }; | |
67 | ||
62557bbc KB |
68 | /* Define an array of addresses to accommodate non-contiguous dynamic |
69 | loading of modules. This is for use when entering commands, so we | |
3a6c3343 AC |
70 | can keep track of the section names until we read the file and can |
71 | map them to bfd sections. This structure is also used by solib.c | |
72 | to communicate the section addresses in shared objects to | |
73 | symbol_file_add (). */ | |
74 | ||
37e136b1 | 75 | typedef std::vector<other_sections> section_addr_info; |
28c32713 JB |
76 | |
77 | /* A table listing the load segments in a symfile, and which segment | |
78 | each BFD section belongs to. */ | |
31d99776 DJ |
79 | struct symfile_segment_data |
80 | { | |
81 | /* How many segments are present in this file. If there are | |
82 | two, the text segment is the first one and the data segment | |
83 | is the second one. */ | |
84 | int num_segments; | |
85 | ||
86 | /* If NUM_SEGMENTS is greater than zero, the original base address | |
87 | of each segment. */ | |
88 | CORE_ADDR *segment_bases; | |
89 | ||
90 | /* If NUM_SEGMENTS is greater than zero, the memory size of each | |
91 | segment. */ | |
92 | CORE_ADDR *segment_sizes; | |
93 | ||
94 | /* If NUM_SEGMENTS is greater than zero, this is an array of entries | |
28c32713 JB |
95 | recording which segment contains each BFD section. |
96 | SEGMENT_INFO[I] is S+1 if the I'th BFD section belongs to segment | |
97 | S, or zero if it is not in any segment. */ | |
31d99776 DJ |
98 | int *segment_info; |
99 | }; | |
100 | ||
44b13c5a JK |
101 | /* Callback for quick_symbol_functions->map_symbol_filenames. */ |
102 | ||
103 | typedef void (symbol_filename_ftype) (const char *filename, | |
104 | const char *fullname, void *data); | |
105 | ||
206f2a57 DE |
106 | /* Callback for quick_symbol_functions->expand_symtabs_matching |
107 | to match a file name. */ | |
108 | ||
14bc53a8 PA |
109 | typedef bool (expand_symtabs_file_matcher_ftype) (const char *filename, |
110 | bool basenames); | |
206f2a57 DE |
111 | |
112 | /* Callback for quick_symbol_functions->expand_symtabs_matching | |
113 | to match a symbol name. */ | |
114 | ||
14bc53a8 | 115 | typedef bool (expand_symtabs_symbol_matcher_ftype) (const char *name); |
206f2a57 | 116 | |
276d885b GB |
117 | /* Callback for quick_symbol_functions->expand_symtabs_matching |
118 | to be called after a symtab has been expanded. */ | |
119 | ||
14bc53a8 | 120 | typedef void (expand_symtabs_exp_notify_ftype) (compunit_symtab *symtab); |
276d885b | 121 | |
ccefe4c4 TT |
122 | /* The "quick" symbol functions exist so that symbol readers can |
123 | avoiding an initial read of all the symbols. For example, symbol | |
124 | readers might choose to use the "partial symbol table" utilities, | |
125 | which is one implementation of the quick symbol functions. | |
126 | ||
127 | The quick symbol functions are generally opaque: the underlying | |
128 | representation is hidden from the caller. | |
129 | ||
130 | In general, these functions should only look at whatever special | |
131 | index the symbol reader creates -- looking through the symbol | |
132 | tables themselves is handled by generic code. If a function is | |
133 | defined as returning a "symbol table", this means that the function | |
134 | should only return a newly-created symbol table; it should not | |
135 | examine pre-existing ones. | |
136 | ||
137 | The exact list of functions here was determined in an ad hoc way | |
138 | based on gdb's history. */ | |
139 | ||
140 | struct quick_symbol_functions | |
141 | { | |
142 | /* Return true if this objfile has any "partial" symbols | |
143 | available. */ | |
144 | int (*has_symbols) (struct objfile *objfile); | |
145 | ||
146 | /* Return the symbol table for the "last" file appearing in | |
147 | OBJFILE. */ | |
148 | struct symtab *(*find_last_source_symtab) (struct objfile *objfile); | |
149 | ||
150 | /* Forget all cached full file names for OBJFILE. */ | |
151 | void (*forget_cached_source_info) (struct objfile *objfile); | |
152 | ||
f8eba3c6 TT |
153 | /* Expand and iterate over each "partial" symbol table in OBJFILE |
154 | where the source file is named NAME. | |
155 | ||
af529f8f JK |
156 | If NAME is not absolute, a match after a '/' in the symbol table's |
157 | file name will also work, REAL_PATH is NULL then. If NAME is | |
158 | absolute then REAL_PATH is non-NULL absolute file name as resolved | |
159 | via gdb_realpath from NAME. | |
f8eba3c6 TT |
160 | |
161 | If a match is found, the "partial" symbol table is expanded. | |
162 | Then, this calls iterate_over_some_symtabs (or equivalent) over | |
14bc53a8 | 163 | all newly-created symbol tables, passing CALLBACK to it. |
f8eba3c6 | 164 | The result of this call is returned. */ |
14bc53a8 PA |
165 | bool (*map_symtabs_matching_filename) |
166 | (struct objfile *objfile, const char *name, const char *real_path, | |
167 | gdb::function_view<bool (symtab *)> callback); | |
ccefe4c4 TT |
168 | |
169 | /* Check to see if the symbol is defined in a "partial" symbol table | |
f88cb4b6 | 170 | of OBJFILE. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, |
ccefe4c4 TT |
171 | depending on whether we want to search global symbols or static |
172 | symbols. NAME is the name of the symbol to look for. DOMAIN | |
173 | indicates what sort of symbol to search for. | |
174 | ||
43f3e411 | 175 | Returns the newly-expanded compunit in which the symbol is |
bfb05775 | 176 | defined, or NULL if no such symbol table exists. If OBJFILE |
43f3e411 DE |
177 | contains !TYPE_OPAQUE symbol prefer its compunit. If it contains |
178 | only TYPE_OPAQUE symbol(s), return at least that compunit. */ | |
179 | struct compunit_symtab *(*lookup_symbol) (struct objfile *objfile, | |
180 | int block_index, const char *name, | |
181 | domain_enum domain); | |
ccefe4c4 TT |
182 | |
183 | /* Print statistics about any indices loaded for OBJFILE. The | |
184 | statistics should be printed to gdb_stdout. This is used for | |
185 | "maint print statistics". */ | |
186 | void (*print_stats) (struct objfile *objfile); | |
187 | ||
188 | /* Dump any indices loaded for OBJFILE. The dump should go to | |
189 | gdb_stdout. This is used for "maint print objfiles". */ | |
190 | void (*dump) (struct objfile *objfile); | |
191 | ||
192 | /* This is called by objfile_relocate to relocate any indices loaded | |
193 | for OBJFILE. */ | |
194 | void (*relocate) (struct objfile *objfile, | |
3189cb12 DE |
195 | const struct section_offsets *new_offsets, |
196 | const struct section_offsets *delta); | |
ccefe4c4 TT |
197 | |
198 | /* Find all the symbols in OBJFILE named FUNC_NAME, and ensure that | |
199 | the corresponding symbol tables are loaded. */ | |
200 | void (*expand_symtabs_for_function) (struct objfile *objfile, | |
201 | const char *func_name); | |
202 | ||
203 | /* Read all symbol tables associated with OBJFILE. */ | |
204 | void (*expand_all_symtabs) (struct objfile *objfile); | |
205 | ||
652a8996 JK |
206 | /* Read all symbol tables associated with OBJFILE which have |
207 | symtab_to_fullname equal to FULLNAME. | |
d4637a04 DE |
208 | This is for the purposes of examining code only, e.g., expand_line_sal. |
209 | The routine may ignore debug info that is known to not be useful with | |
210 | code, e.g., DW_TAG_type_unit for dwarf debug info. */ | |
652a8996 JK |
211 | void (*expand_symtabs_with_fullname) (struct objfile *objfile, |
212 | const char *fullname); | |
ccefe4c4 | 213 | |
fe978cb0 | 214 | /* Find global or static symbols in all tables that are in DOMAIN |
40658b94 | 215 | and for which MATCH (symbol name, NAME) == 0, passing each to |
265e52c3 | 216 | CALLBACK, reading in partial symbol tables as needed. Look |
c378eb4e | 217 | through global symbols if GLOBAL and otherwise static symbols. |
40658b94 PH |
218 | Passes NAME, NAMESPACE, and DATA to CALLBACK with each symbol |
219 | found. After each block is processed, passes NULL to CALLBACK. | |
1e3a8f45 JB |
220 | MATCH must be weaker than strcmp_iw_ordered in the sense that |
221 | strcmp_iw_ordered(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE, | |
222 | if non-null, must be an ordering relation compatible with | |
223 | strcmp_iw_ordered in the sense that | |
224 | strcmp_iw_ordered(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0 | |
40658b94 | 225 | and |
1e3a8f45 JB |
226 | strcmp_iw_ordered(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0 |
227 | (allowing strcmp_iw_ordered(x,y) < 0 while ORDERED_COMPARE(x, y) == 0). | |
40658b94 PH |
228 | CALLBACK returns 0 to indicate that the scan should continue, or |
229 | non-zero to indicate that the scan should be terminated. */ | |
230 | ||
ade7ed9e | 231 | void (*map_matching_symbols) (struct objfile *, |
fe978cb0 | 232 | const char *name, domain_enum domain, |
ade7ed9e | 233 | int global, |
40658b94 PH |
234 | int (*callback) (struct block *, |
235 | struct symbol *, void *), | |
236 | void *data, | |
b5ec771e | 237 | symbol_name_match_type match, |
2edb89d3 | 238 | symbol_compare_ftype *ordered_compare); |
ccefe4c4 TT |
239 | |
240 | /* Expand all symbol tables in OBJFILE matching some criteria. | |
241 | ||
242 | FILE_MATCHER is called for each file in OBJFILE. The file name | |
14bc53a8 PA |
243 | is passed to it. If the matcher returns false, the file is |
244 | skipped. If FILE_MATCHER is NULL the file is not skipped. If | |
245 | BASENAMES is true the matcher should consider only file base | |
246 | names (the passed file name is already only the lbasename'd | |
247 | part). | |
ccefe4c4 | 248 | |
14bc53a8 | 249 | Otherwise, if KIND does not match, this symbol is skipped. |
74ccd7f5 | 250 | |
14bc53a8 PA |
251 | If even KIND matches, SYMBOL_MATCHER is called for each symbol |
252 | defined in the file. The symbol "search" name is passed to | |
253 | SYMBOL_MATCHER. | |
ccefe4c4 | 254 | |
14bc53a8 | 255 | If SYMBOL_MATCHER returns false, then the symbol is skipped. |
ccefe4c4 | 256 | |
14bc53a8 | 257 | Otherwise, the symbol's symbol table is expanded. */ |
f8eba3c6 TT |
258 | void (*expand_symtabs_matching) |
259 | (struct objfile *objfile, | |
14bc53a8 | 260 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
b5ec771e | 261 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
262 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
263 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
264 | enum search_domain kind); | |
ccefe4c4 | 265 | |
43f3e411 DE |
266 | /* Return the comp unit from OBJFILE that contains PC and |
267 | SECTION. Return NULL if there is no such compunit. This | |
268 | should return the compunit that contains a symbol whose | |
ccefe4c4 | 269 | address exactly matches PC, or, if there is no exact match, the |
43f3e411 | 270 | compunit that contains a symbol whose address is closest to |
ccefe4c4 | 271 | PC. */ |
43f3e411 DE |
272 | struct compunit_symtab *(*find_pc_sect_compunit_symtab) |
273 | (struct objfile *objfile, struct bound_minimal_symbol msymbol, | |
274 | CORE_ADDR pc, struct obj_section *section, int warn_if_readin); | |
ccefe4c4 | 275 | |
71a3c369 TT |
276 | /* Return the comp unit from OBJFILE that contains a symbol at |
277 | ADDRESS. Return NULL if there is no such comp unit. Unlike | |
278 | find_pc_sect_compunit_symtab, any sort of symbol (not just text | |
279 | symbols) can be considered, and only exact address matches are | |
280 | considered. This pointer may be NULL. */ | |
281 | struct compunit_symtab *(*find_compunit_symtab_by_address) | |
282 | (struct objfile *objfile, CORE_ADDR address); | |
283 | ||
ad727bb2 | 284 | /* Call a callback for every file defined in OBJFILE whose symtab is |
44b13c5a | 285 | not already read in. FUN is the callback. It is passed the file's |
74e2f255 DE |
286 | FILENAME, the file's FULLNAME (if need_fullname is non-zero), and |
287 | the DATA passed to this function. */ | |
ccefe4c4 | 288 | void (*map_symbol_filenames) (struct objfile *objfile, |
74e2f255 DE |
289 | symbol_filename_ftype *fun, void *data, |
290 | int need_fullname); | |
ccefe4c4 TT |
291 | }; |
292 | ||
55aa24fb SDJ |
293 | /* Structure of functions used for probe support. If one of these functions |
294 | is provided, all must be. */ | |
295 | ||
296 | struct sym_probe_fns | |
297 | { | |
aaa63a31 SM |
298 | /* If non-NULL, return a reference to vector of probe objects. */ |
299 | const std::vector<probe *> &(*sym_get_probes) (struct objfile *); | |
55aa24fb SDJ |
300 | }; |
301 | ||
c906108c SS |
302 | /* Structure to keep track of symbol reading functions for various |
303 | object file types. */ | |
304 | ||
c5aa993b | 305 | struct sym_fns |
3a6c3343 | 306 | { |
3a6c3343 AC |
307 | /* Initializes anything that is global to the entire symbol table. |
308 | It is called during symbol_file_add, when we begin debugging an | |
309 | entirely new program. */ | |
c906108c | 310 | |
3a6c3343 | 311 | void (*sym_new_init) (struct objfile *); |
c906108c | 312 | |
3a6c3343 AC |
313 | /* Reads any initial information from a symbol file, and initializes |
314 | the struct sym_fns SF in preparation for sym_read(). It is | |
315 | called every time we read a symbol file for any reason. */ | |
c906108c | 316 | |
3a6c3343 | 317 | void (*sym_init) (struct objfile *); |
c906108c | 318 | |
f4352531 | 319 | /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab |
3a6c3343 | 320 | (or possibly a symtab). OBJFILE is the objfile struct for the |
f4352531 TG |
321 | file we are reading. SYMFILE_FLAGS are the flags passed to |
322 | symbol_file_add & co. */ | |
c906108c | 323 | |
b15cc25c | 324 | void (*sym_read) (struct objfile *, symfile_add_flags); |
c906108c | 325 | |
3e03848b JK |
326 | /* Read the partial symbols for an objfile. This may be NULL, in which case |
327 | gdb has to check other ways if this objfile has any symbols. This may | |
328 | only be non-NULL if the objfile actually does have debuginfo available. | |
329 | */ | |
b11896a5 TT |
330 | |
331 | void (*sym_read_psymbols) (struct objfile *); | |
332 | ||
3a6c3343 AC |
333 | /* Called when we are finished with an objfile. Should do all |
334 | cleanup that is specific to the object file format for the | |
335 | particular objfile. */ | |
c906108c | 336 | |
3a6c3343 | 337 | void (*sym_finish) (struct objfile *); |
c906108c | 338 | |
db7a9bcd | 339 | |
3a6c3343 | 340 | /* This function produces a file-dependent section_offsets |
db7a9bcd SM |
341 | structure, allocated in the objfile's storage. |
342 | ||
343 | The section_addr_info structure contains the offset of loadable and | |
344 | allocated sections, relative to the absolute offsets found in the BFD. */ | |
c906108c | 345 | |
37e136b1 | 346 | void (*sym_offsets) (struct objfile *, const section_addr_info &); |
c906108c | 347 | |
31d99776 DJ |
348 | /* This function produces a format-independent description of |
349 | the segments of ABFD. Each segment is a unit of the file | |
350 | which may be relocated independently. */ | |
351 | ||
352 | struct symfile_segment_data *(*sym_segments) (bfd *abfd); | |
353 | ||
c295b2e5 JB |
354 | /* This function should read the linetable from the objfile when |
355 | the line table cannot be read while processing the debugging | |
356 | information. */ | |
ac8035ab | 357 | |
f56ce883 | 358 | void (*sym_read_linetable) (struct objfile *); |
c295b2e5 | 359 | |
ac8035ab TG |
360 | /* Relocate the contents of a debug section SECTP. The |
361 | contents are stored in BUF if it is non-NULL, or returned in a | |
362 | malloc'd buffer otherwise. */ | |
363 | ||
364 | bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf); | |
365 | ||
55aa24fb SDJ |
366 | /* If non-NULL, this objfile has probe support, and all the probe |
367 | functions referred to here will be non-NULL. */ | |
368 | const struct sym_probe_fns *sym_probe_fns; | |
369 | ||
ccefe4c4 TT |
370 | /* The "quick" (aka partial) symbol functions for this symbol |
371 | reader. */ | |
372 | const struct quick_symbol_functions *qf; | |
3a6c3343 | 373 | }; |
c906108c | 374 | |
37e136b1 | 375 | extern section_addr_info |
3e43a32a | 376 | build_section_addr_info_from_objfile (const struct objfile *objfile); |
567995e1 | 377 | |
75242ef4 JK |
378 | extern void relative_addr_info_to_section_offsets |
379 | (struct section_offsets *section_offsets, int num_sections, | |
37e136b1 | 380 | const section_addr_info &addrs); |
75242ef4 | 381 | |
37e136b1 | 382 | extern void addr_info_make_relative (section_addr_info *addrs, |
75242ef4 JK |
383 | bfd *abfd); |
384 | ||
c906108c SS |
385 | /* The default version of sym_fns.sym_offsets for readers that don't |
386 | do anything special. */ | |
387 | ||
570b8f7c | 388 | extern void default_symfile_offsets (struct objfile *objfile, |
37e136b1 | 389 | const section_addr_info &); |
c906108c | 390 | |
31d99776 DJ |
391 | /* The default version of sym_fns.sym_segments for readers that don't |
392 | do anything special. */ | |
393 | ||
394 | extern struct symfile_segment_data *default_symfile_segments (bfd *abfd); | |
c906108c | 395 | |
ac8035ab TG |
396 | /* The default version of sym_fns.sym_relocate for readers that don't |
397 | do anything special. */ | |
398 | ||
399 | extern bfd_byte *default_symfile_relocate (struct objfile *objfile, | |
400 | asection *sectp, bfd_byte *buf); | |
401 | ||
43f3e411 | 402 | extern struct symtab *allocate_symtab (struct compunit_symtab *, const char *) |
4e04028d | 403 | ATTRIBUTE_NONNULL (1); |
c906108c | 404 | |
43f3e411 DE |
405 | extern struct compunit_symtab *allocate_compunit_symtab (struct objfile *, |
406 | const char *) | |
407 | ATTRIBUTE_NONNULL (1); | |
408 | ||
409 | extern void add_compunit_symtab_to_objfile (struct compunit_symtab *cu); | |
410 | ||
c256e171 | 411 | extern void add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *); |
c906108c | 412 | |
b15cc25c | 413 | extern void clear_symtab_users (symfile_add_flags add_flags); |
f176c4b5 DE |
414 | |
415 | extern enum language deduce_language_from_filename (const char *); | |
416 | ||
56618e20 TT |
417 | /* Map the filename extension EXT to the language LANG. Any previous |
418 | association of EXT will be removed. EXT will be copied by this | |
419 | function. */ | |
420 | extern void add_filename_language (const char *ext, enum language lang); | |
421 | ||
b15cc25c | 422 | extern struct objfile *symbol_file_add (const char *, symfile_add_flags, |
37e136b1 | 423 | section_addr_info *, objfile_flags); |
7eedccfa | 424 | |
b15cc25c | 425 | extern struct objfile *symbol_file_add_from_bfd (bfd *, const char *, symfile_add_flags, |
37e136b1 | 426 | section_addr_info *, |
b15cc25c | 427 | objfile_flags, struct objfile *parent); |
eb4556d7 | 428 | |
b15cc25c | 429 | extern void symbol_file_add_separate (bfd *, const char *, symfile_add_flags, |
24ba069a | 430 | struct objfile *); |
9cce227f | 431 | |
a8dbfd58 | 432 | extern std::string find_separate_debug_file_by_debuglink (struct objfile *); |
9cce227f | 433 | |
3a6c3343 AC |
434 | /* Build (allocate and populate) a section_addr_info struct from an |
435 | existing section table. */ | |
62557bbc | 436 | |
37e136b1 TT |
437 | extern section_addr_info |
438 | build_section_addr_info_from_section_table (const struct target_section | |
3a6c3343 | 439 | *start, |
0542c86d | 440 | const struct target_section |
3a6c3343 | 441 | *end); |
62557bbc | 442 | |
c906108c SS |
443 | /* Variables */ |
444 | ||
b7209cb4 FF |
445 | /* If non-zero, shared library symbols will be added automatically |
446 | when the inferior is created, new libraries are loaded, or when | |
447 | attaching to the inferior. This is almost always what users will | |
448 | want to have happen; but for very large programs, the startup time | |
449 | will be excessive, and so if this is a problem, the user can clear | |
450 | this flag and then add the shared library symbols as needed. Note | |
451 | that there is a potential for confusion, since if the shared | |
452 | library symbols are not loaded, commands like "info fun" will *not* | |
3a6c3343 | 453 | report all the functions that are actually present. */ |
c906108c | 454 | |
b7209cb4 | 455 | extern int auto_solib_add; |
c906108c | 456 | |
c906108c SS |
457 | /* From symfile.c */ |
458 | ||
8b60591b JB |
459 | extern void set_initial_language (void); |
460 | ||
4efb68b1 | 461 | extern void find_lowest_section (bfd *, asection *, void *); |
c906108c | 462 | |
192b62ce | 463 | extern gdb_bfd_ref_ptr symfile_bfd_open (const char *); |
c906108c | 464 | |
a121b7c1 | 465 | extern int get_section_index (struct objfile *, const char *); |
e2f6d8e5 | 466 | |
770e7fc7 DE |
467 | extern int print_symbol_loading_p (int from_tty, int mainline, int full); |
468 | ||
c906108c | 469 | /* Utility functions for overlay sections: */ |
3a6c3343 AC |
470 | extern enum overlay_debugging_state |
471 | { | |
472 | ovly_off, | |
473 | ovly_on, | |
d874f1e2 MS |
474 | ovly_auto |
475 | } overlay_debugging; | |
c906108c SS |
476 | extern int overlay_cache_invalid; |
477 | ||
3a6c3343 | 478 | /* Return the "mapped" overlay section containing the PC. */ |
714835d5 | 479 | extern struct obj_section *find_pc_mapped_section (CORE_ADDR); |
c906108c | 480 | |
3a6c3343 AC |
481 | /* Return any overlay section containing the PC (even in its LMA |
482 | region). */ | |
714835d5 | 483 | extern struct obj_section *find_pc_overlay (CORE_ADDR); |
c906108c | 484 | |
3a6c3343 | 485 | /* Return true if the section is an overlay. */ |
714835d5 | 486 | extern int section_is_overlay (struct obj_section *); |
c906108c | 487 | |
3a6c3343 | 488 | /* Return true if the overlay section is currently "mapped". */ |
714835d5 | 489 | extern int section_is_mapped (struct obj_section *); |
c906108c | 490 | |
3a6c3343 | 491 | /* Return true if pc belongs to section's VMA. */ |
714835d5 | 492 | extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 493 | |
3a6c3343 | 494 | /* Return true if pc belongs to section's LMA. */ |
714835d5 | 495 | extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 496 | |
3a6c3343 | 497 | /* Map an address from a section's LMA to its VMA. */ |
714835d5 | 498 | extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 499 | |
3a6c3343 | 500 | /* Map an address from a section's VMA to its LMA. */ |
714835d5 | 501 | extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 502 | |
3a6c3343 | 503 | /* Convert an address in an overlay section (force into VMA range). */ |
714835d5 | 504 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
c906108c | 505 | |
3a6c3343 | 506 | /* Load symbols from a file. */ |
ecf45d2c SL |
507 | extern void symbol_file_add_main (const char *args, |
508 | symfile_add_flags add_flags); | |
1adeb98a | 509 | |
3a6c3343 | 510 | /* Clear GDB symbol tables. */ |
1adeb98a FN |
511 | extern void symbol_file_clear (int from_tty); |
512 | ||
1c772458 UW |
513 | /* Default overlay update function. */ |
514 | extern void simple_overlay_update (struct obj_section *); | |
515 | ||
ac8035ab TG |
516 | extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, |
517 | bfd_byte *); | |
086df311 | 518 | |
31d99776 | 519 | extern int symfile_map_offsets_to_segments (bfd *, |
3189cb12 | 520 | const struct symfile_segment_data *, |
31d99776 DJ |
521 | struct section_offsets *, |
522 | int, const CORE_ADDR *); | |
523 | struct symfile_segment_data *get_symfile_segment_data (bfd *abfd); | |
524 | void free_symfile_segment_data (struct symfile_segment_data *data); | |
525 | ||
c83dd867 | 526 | extern scoped_restore_tmpl<int> increment_reading_symtab (void); |
ccefe4c4 | 527 | |
14bc53a8 PA |
528 | void expand_symtabs_matching |
529 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 530 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
531 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
532 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
533 | enum search_domain kind); | |
540c2971 | 534 | |
bb4142cf DE |
535 | void map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
536 | int need_fullname); | |
540c2971 | 537 | |
c906108c SS |
538 | /* From dwarf2read.c */ |
539 | ||
251d32d9 TG |
540 | /* Names for a dwarf2 debugging section. The field NORMAL is the normal |
541 | section name (usually from the DWARF standard), while the field COMPRESSED | |
542 | is the name of compressed sections. If your object file format doesn't | |
543 | support compressed sections, the field COMPRESSED can be NULL. Likewise, | |
544 | the debugging section is not supported, the field NORMAL can be NULL too. | |
545 | It doesn't make sense to have a NULL NORMAL field but a non-NULL COMPRESSED | |
546 | field. */ | |
547 | ||
548 | struct dwarf2_section_names { | |
549 | const char *normal; | |
550 | const char *compressed; | |
551 | }; | |
552 | ||
553 | /* List of names for dward2 debugging sections. Also most object file formats | |
554 | use the standardized (ie ELF) names, some (eg XCOFF) have customized names | |
555 | due to restrictions. | |
556 | The table for the standard names is defined in dwarf2read.c. Please | |
557 | update all instances of dwarf2_debug_sections if you add a field to this | |
558 | structure. It is always safe to use { NULL, NULL } in this case. */ | |
559 | ||
560 | struct dwarf2_debug_sections { | |
561 | struct dwarf2_section_names info; | |
562 | struct dwarf2_section_names abbrev; | |
563 | struct dwarf2_section_names line; | |
564 | struct dwarf2_section_names loc; | |
43988095 | 565 | struct dwarf2_section_names loclists; |
251d32d9 | 566 | struct dwarf2_section_names macinfo; |
cf2c3c16 | 567 | struct dwarf2_section_names macro; |
251d32d9 | 568 | struct dwarf2_section_names str; |
43988095 | 569 | struct dwarf2_section_names line_str; |
251d32d9 | 570 | struct dwarf2_section_names ranges; |
43988095 | 571 | struct dwarf2_section_names rnglists; |
251d32d9 | 572 | struct dwarf2_section_names types; |
3019eac3 | 573 | struct dwarf2_section_names addr; |
251d32d9 TG |
574 | struct dwarf2_section_names frame; |
575 | struct dwarf2_section_names eh_frame; | |
576 | struct dwarf2_section_names gdb_index; | |
927aa2e7 JK |
577 | struct dwarf2_section_names debug_names; |
578 | struct dwarf2_section_names debug_aranges; | |
24d3216f TT |
579 | /* This field has no meaning, but exists solely to catch changes to |
580 | this structure which are not reflected in some instance. */ | |
581 | int sentinel; | |
251d32d9 TG |
582 | }; |
583 | ||
584 | extern int dwarf2_has_info (struct objfile *, | |
585 | const struct dwarf2_debug_sections *); | |
c906108c | 586 | |
3017a003 TG |
587 | /* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */ |
588 | enum dwarf2_section_enum { | |
589 | DWARF2_DEBUG_FRAME, | |
590 | DWARF2_EH_FRAME | |
591 | }; | |
592 | ||
593 | extern void dwarf2_get_section_info (struct objfile *, | |
594 | enum dwarf2_section_enum, | |
d521ce57 | 595 | asection **, const gdb_byte **, |
3017a003 TG |
596 | bfd_size_type *); |
597 | ||
3c0aa29a PA |
598 | /* A DWARF names index variant. */ |
599 | enum class dw_index_kind | |
600 | { | |
601 | /* GDB's own .gdb_index format. */ | |
602 | GDB_INDEX, | |
603 | ||
604 | /* DWARF5 .debug_names. */ | |
605 | DEBUG_NAMES, | |
606 | }; | |
607 | ||
608 | /* Initialize for reading DWARF for OBJFILE. Return false if this | |
609 | file will use psymtabs, or true if using an index, in which case | |
610 | *INDEX_KIND is set to the index variant in use. */ | |
611 | extern bool dwarf2_initialize_objfile (struct objfile *objfile, | |
612 | dw_index_kind *index_kind); | |
613 | ||
f29dff0a | 614 | extern void dwarf2_build_psymtabs (struct objfile *); |
b6af0555 | 615 | extern void dwarf2_build_frame_info (struct objfile *); |
d4f3574e | 616 | |
fe3e1990 DJ |
617 | void dwarf2_free_objfile (struct objfile *); |
618 | ||
c906108c SS |
619 | /* From mdebugread.c */ |
620 | ||
8dddcb8f TT |
621 | extern void mdebug_build_psymtabs (minimal_symbol_reader &, |
622 | struct objfile *, | |
3a6c3343 AC |
623 | const struct ecoff_debug_swap *, |
624 | struct ecoff_debug_info *); | |
625 | ||
626 | extern void elfmdebug_build_psymtabs (struct objfile *, | |
627 | const struct ecoff_debug_swap *, | |
628 | asection *); | |
c906108c | 629 | |
608e2dbb TT |
630 | /* From minidebug.c. */ |
631 | ||
192b62ce | 632 | extern gdb_bfd_ref_ptr find_separate_debug_file_in_section (struct objfile *); |
608e2dbb | 633 | |
c4dcb155 SM |
634 | /* True if we are printing debug output about separate debug info files. */ |
635 | ||
636 | extern int separate_debug_file_debug; | |
637 | ||
c5aa993b | 638 | #endif /* !defined(SYMFILE_H) */ |