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