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c906108c | 1 | /* Definitions for reading symbol files into GDB. |
3a6c3343 | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4c38e0a4 | 4 | 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010 |
0fb0cc75 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #if !defined (SYMFILE_H) | |
23 | #define SYMFILE_H | |
24 | ||
25 | /* This file requires that you first include "bfd.h". */ | |
16708cba | 26 | #include "symtab.h" |
c906108c | 27 | |
63ca651f | 28 | /* Opaque declarations. */ |
0542c86d | 29 | struct target_section; |
da3331ec | 30 | struct objfile; |
1c772458 | 31 | struct obj_section; |
63ca651f | 32 | struct obstack; |
fe898f56 | 33 | struct block; |
63ca651f | 34 | |
3a6c3343 AC |
35 | /* Partial symbols are stored in the psymbol_cache and pointers to |
36 | them are kept in a dynamically grown array that is obtained from | |
37 | malloc and grown as necessary via realloc. Each objfile typically | |
38 | has two of these, one for global symbols and one for static | |
39 | symbols. Although this adds a level of indirection for storing or | |
40 | accessing the partial symbols, it allows us to throw away duplicate | |
41 | psymbols and set all pointers to the single saved instance. */ | |
c906108c | 42 | |
c5aa993b | 43 | struct psymbol_allocation_list |
3a6c3343 | 44 | { |
c906108c | 45 | |
3a6c3343 AC |
46 | /* Pointer to beginning of dynamically allocated array of pointers |
47 | to partial symbols. The array is dynamically expanded as | |
48 | necessary to accommodate more pointers. */ | |
c906108c | 49 | |
3a6c3343 | 50 | struct partial_symbol **list; |
c906108c | 51 | |
3a6c3343 AC |
52 | /* Pointer to next available slot in which to store a pointer to a |
53 | partial symbol. */ | |
c906108c | 54 | |
3a6c3343 | 55 | struct partial_symbol **next; |
c906108c | 56 | |
3a6c3343 AC |
57 | /* Number of allocated pointer slots in current dynamic array (not |
58 | the number of bytes of storage). The "next" pointer will always | |
59 | point somewhere between list[0] and list[size], and when at | |
60 | list[size] the array will be expanded on the next attempt to | |
61 | store a pointer. */ | |
c906108c | 62 | |
3a6c3343 AC |
63 | int size; |
64 | }; | |
c906108c | 65 | |
62557bbc KB |
66 | /* Define an array of addresses to accommodate non-contiguous dynamic |
67 | loading of modules. This is for use when entering commands, so we | |
3a6c3343 AC |
68 | can keep track of the section names until we read the file and can |
69 | map them to bfd sections. This structure is also used by solib.c | |
70 | to communicate the section addresses in shared objects to | |
71 | symbol_file_add (). */ | |
72 | ||
73 | struct section_addr_info | |
62557bbc | 74 | { |
a39a16c4 MM |
75 | /* The number of sections for which address information is |
76 | available. */ | |
77 | size_t num_sections; | |
9d8a64cb | 78 | /* Sections whose names are file format dependent. */ |
62557bbc KB |
79 | struct other_sections |
80 | { | |
81 | CORE_ADDR addr; | |
82 | char *name; | |
672d9c23 JK |
83 | |
84 | /* SECTINDEX must be valid for associated BFD if ADDR is not zero. */ | |
62557bbc | 85 | int sectindex; |
a39a16c4 | 86 | } other[1]; |
62557bbc KB |
87 | }; |
88 | ||
28c32713 JB |
89 | |
90 | /* A table listing the load segments in a symfile, and which segment | |
91 | each BFD section belongs to. */ | |
31d99776 DJ |
92 | struct symfile_segment_data |
93 | { | |
94 | /* How many segments are present in this file. If there are | |
95 | two, the text segment is the first one and the data segment | |
96 | is the second one. */ | |
97 | int num_segments; | |
98 | ||
99 | /* If NUM_SEGMENTS is greater than zero, the original base address | |
100 | of each segment. */ | |
101 | CORE_ADDR *segment_bases; | |
102 | ||
103 | /* If NUM_SEGMENTS is greater than zero, the memory size of each | |
104 | segment. */ | |
105 | CORE_ADDR *segment_sizes; | |
106 | ||
107 | /* If NUM_SEGMENTS is greater than zero, this is an array of entries | |
28c32713 JB |
108 | recording which segment contains each BFD section. |
109 | SEGMENT_INFO[I] is S+1 if the I'th BFD section belongs to segment | |
110 | S, or zero if it is not in any segment. */ | |
31d99776 DJ |
111 | int *segment_info; |
112 | }; | |
113 | ||
ccefe4c4 TT |
114 | /* The "quick" symbol functions exist so that symbol readers can |
115 | avoiding an initial read of all the symbols. For example, symbol | |
116 | readers might choose to use the "partial symbol table" utilities, | |
117 | which is one implementation of the quick symbol functions. | |
118 | ||
119 | The quick symbol functions are generally opaque: the underlying | |
120 | representation is hidden from the caller. | |
121 | ||
122 | In general, these functions should only look at whatever special | |
123 | index the symbol reader creates -- looking through the symbol | |
124 | tables themselves is handled by generic code. If a function is | |
125 | defined as returning a "symbol table", this means that the function | |
126 | should only return a newly-created symbol table; it should not | |
127 | examine pre-existing ones. | |
128 | ||
129 | The exact list of functions here was determined in an ad hoc way | |
130 | based on gdb's history. */ | |
131 | ||
132 | struct quick_symbol_functions | |
133 | { | |
134 | /* Return true if this objfile has any "partial" symbols | |
135 | available. */ | |
136 | int (*has_symbols) (struct objfile *objfile); | |
137 | ||
138 | /* Return the symbol table for the "last" file appearing in | |
139 | OBJFILE. */ | |
140 | struct symtab *(*find_last_source_symtab) (struct objfile *objfile); | |
141 | ||
142 | /* Forget all cached full file names for OBJFILE. */ | |
143 | void (*forget_cached_source_info) (struct objfile *objfile); | |
144 | ||
145 | /* Look up the symbol table, in OBJFILE, of a source file named | |
146 | NAME. If there is no '/' in the name, a match after a '/' in the | |
147 | symbol table's file name will also work. FULL_PATH is the | |
148 | absolute file name, and REAL_PATH is the same, run through | |
149 | gdb_realpath. | |
150 | ||
151 | If no such symbol table can be found, returns 0. | |
152 | ||
153 | Otherwise, sets *RESULT to the symbol table and returns 1. This | |
154 | might return 1 and set *RESULT to NULL if the requested file is | |
155 | an include file that does not have a symtab of its own. */ | |
156 | int (*lookup_symtab) (struct objfile *objfile, | |
157 | const char *name, | |
158 | const char *full_path, | |
159 | const char *real_path, | |
160 | struct symtab **result); | |
161 | ||
162 | /* Check to see if the symbol is defined in a "partial" symbol table | |
163 | of OBJFILE. KIND should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
164 | depending on whether we want to search global symbols or static | |
165 | symbols. NAME is the name of the symbol to look for. DOMAIN | |
166 | indicates what sort of symbol to search for. | |
167 | ||
168 | Returns the newly-expanded symbol table in which the symbol is | |
169 | defined, or NULL if no such symbol table exists. */ | |
170 | struct symtab *(*lookup_symbol) (struct objfile *objfile, | |
171 | int kind, const char *name, | |
172 | domain_enum domain); | |
173 | ||
774b6a14 TT |
174 | /* This is called to expand symbol tables before looking up a |
175 | symbol. A backend can choose to implement this and then have its | |
176 | `lookup_symbol' hook always return NULL, or the reverse. (It | |
177 | doesn't make sense to implement both.) The arguments are as for | |
178 | `lookup_symbol'. */ | |
179 | void (*pre_expand_symtabs_matching) (struct objfile *objfile, | |
180 | int kind, const char *name, | |
181 | domain_enum domain); | |
58b6ab13 | 182 | |
ccefe4c4 TT |
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, | |
195 | struct section_offsets *new_offsets, | |
196 | struct section_offsets *delta); | |
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 | ||
206 | /* Read all symbol tables associated with OBJFILE which have the | |
207 | file name FILENAME. */ | |
208 | void (*expand_symtabs_with_filename) (struct objfile *objfile, | |
209 | const char *filename); | |
210 | ||
211 | /* Return the file name of the file holding the symbol in OBJFILE | |
212 | named NAME. If no such symbol exists in OBJFILE, return NULL. */ | |
dd786858 | 213 | const char *(*find_symbol_file) (struct objfile *objfile, const char *name); |
ccefe4c4 | 214 | |
40658b94 PH |
215 | /* Find global or static symbols in all tables that are in NAMESPACE |
216 | and for which MATCH (symbol name, NAME) == 0, passing each to | |
217 | CALLBACK, reading in partial symbol symbol tables as needed. Look | |
218 | through global symbols if GLOBAL and otherwise static symbols. | |
219 | Passes NAME, NAMESPACE, and DATA to CALLBACK with each symbol | |
220 | found. After each block is processed, passes NULL to CALLBACK. | |
221 | MATCH must be weaker than strcmp_iw in the sense that | |
222 | strcmp_iw(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE, if | |
223 | non-null, must be an ordering relation compatible with strcmp_iw | |
224 | in the sense that | |
225 | strcmp(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0 | |
226 | and | |
227 | strcmp(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0 | |
228 | (allowing strcmp(x,y) < 0 while ORDERED_COMPARE(x, y) == 0). | |
229 | CALLBACK returns 0 to indicate that the scan should continue, or | |
230 | non-zero to indicate that the scan should be terminated. */ | |
231 | ||
232 | void (*map_matching_symbols) (const char *name, domain_enum namespace, | |
233 | struct objfile *, int global, | |
234 | int (*callback) (struct block *, | |
235 | struct symbol *, void *), | |
236 | void *data, | |
237 | int (*match) (const char *, const char *), | |
238 | int (*ordered_compare) (const char *, | |
239 | const char *)); | |
ccefe4c4 TT |
240 | |
241 | /* Expand all symbol tables in OBJFILE matching some criteria. | |
242 | ||
243 | FILE_MATCHER is called for each file in OBJFILE. The file name | |
244 | and the DATA argument are passed to it. If it returns zero, this | |
245 | file is skipped. | |
246 | ||
247 | Otherwise, if the file is not skipped, then NAME_MATCHER is | |
248 | called for each symbol defined in the file. The symbol's | |
249 | "natural" name and DATA are passed to NAME_MATCHER. | |
250 | ||
251 | If NAME_MATCHER returns zero, then this symbol is skipped. | |
252 | ||
253 | Otherwise, if this symbol is not skipped, and it matches KIND, | |
254 | then this symbol's symbol table is expanded. | |
255 | ||
256 | DATA is user data that is passed unmodified to the callback | |
257 | functions. */ | |
258 | void (*expand_symtabs_matching) (struct objfile *objfile, | |
259 | int (*file_matcher) (const char *, void *), | |
260 | int (*name_matcher) (const char *, void *), | |
261 | domain_enum kind, | |
262 | void *data); | |
263 | ||
264 | /* Return the symbol table from OBJFILE that contains PC and | |
265 | SECTION. Return NULL if there is no such symbol table. This | |
266 | should return the symbol table that contains a symbol whose | |
267 | address exactly matches PC, or, if there is no exact match, the | |
268 | symbol table that contains a symbol whose address is closest to | |
269 | PC. */ | |
270 | struct symtab *(*find_pc_sect_symtab) (struct objfile *objfile, | |
271 | struct minimal_symbol *msymbol, | |
272 | CORE_ADDR pc, | |
273 | struct obj_section *section, | |
274 | int warn_if_readin); | |
275 | ||
276 | /* Call a callback for every symbol defined in OBJFILE. FUN is the | |
277 | callback. It is passed the symbol's natural name, and the DATA | |
278 | passed to this function. */ | |
279 | void (*map_symbol_names) (struct objfile *objfile, | |
280 | void (*fun) (const char *, void *), | |
281 | void *data); | |
282 | ||
283 | /* Call a callback for every file defined in OBJFILE. FUN is the | |
284 | callback. It is passed the file's name, the file's full name, | |
285 | and the DATA passed to this function. */ | |
286 | void (*map_symbol_filenames) (struct objfile *objfile, | |
287 | void (*fun) (const char *, const char *, | |
288 | void *), | |
289 | void *data); | |
290 | }; | |
291 | ||
c906108c SS |
292 | /* Structure to keep track of symbol reading functions for various |
293 | object file types. */ | |
294 | ||
c5aa993b | 295 | struct sym_fns |
3a6c3343 | 296 | { |
c906108c | 297 | |
3a6c3343 AC |
298 | /* BFD flavour that we handle, or (as a special kludge, see |
299 | xcoffread.c, (enum bfd_flavour)-1 for xcoff). */ | |
c906108c | 300 | |
3a6c3343 | 301 | enum bfd_flavour sym_flavour; |
c906108c | 302 | |
3a6c3343 AC |
303 | /* Initializes anything that is global to the entire symbol table. |
304 | It is called during symbol_file_add, when we begin debugging an | |
305 | entirely new program. */ | |
c906108c | 306 | |
3a6c3343 | 307 | void (*sym_new_init) (struct objfile *); |
c906108c | 308 | |
3a6c3343 AC |
309 | /* Reads any initial information from a symbol file, and initializes |
310 | the struct sym_fns SF in preparation for sym_read(). It is | |
311 | called every time we read a symbol file for any reason. */ | |
c906108c | 312 | |
3a6c3343 | 313 | void (*sym_init) (struct objfile *); |
c906108c | 314 | |
f4352531 | 315 | /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab |
3a6c3343 | 316 | (or possibly a symtab). OBJFILE is the objfile struct for the |
f4352531 TG |
317 | file we are reading. SYMFILE_FLAGS are the flags passed to |
318 | symbol_file_add & co. */ | |
c906108c | 319 | |
3a6c3343 | 320 | void (*sym_read) (struct objfile *, int); |
c906108c | 321 | |
3a6c3343 AC |
322 | /* Called when we are finished with an objfile. Should do all |
323 | cleanup that is specific to the object file format for the | |
324 | particular objfile. */ | |
c906108c | 325 | |
3a6c3343 | 326 | void (*sym_finish) (struct objfile *); |
c906108c | 327 | |
3a6c3343 AC |
328 | /* This function produces a file-dependent section_offsets |
329 | structure, allocated in the objfile's storage, and based on the | |
330 | parameter. The parameter is currently a CORE_ADDR (FIXME!) for | |
331 | backward compatibility with the higher levels of GDB. It should | |
332 | probably be changed to a string, where NULL means the default, | |
333 | and others are parsed in a file dependent way. */ | |
c906108c | 334 | |
3a6c3343 | 335 | void (*sym_offsets) (struct objfile *, struct section_addr_info *); |
c906108c | 336 | |
31d99776 DJ |
337 | /* This function produces a format-independent description of |
338 | the segments of ABFD. Each segment is a unit of the file | |
339 | which may be relocated independently. */ | |
340 | ||
341 | struct symfile_segment_data *(*sym_segments) (bfd *abfd); | |
342 | ||
c295b2e5 JB |
343 | /* This function should read the linetable from the objfile when |
344 | the line table cannot be read while processing the debugging | |
345 | information. */ | |
ac8035ab | 346 | |
c295b2e5 JB |
347 | void (*sym_read_linetable) (void); |
348 | ||
ac8035ab TG |
349 | /* Relocate the contents of a debug section SECTP. The |
350 | contents are stored in BUF if it is non-NULL, or returned in a | |
351 | malloc'd buffer otherwise. */ | |
352 | ||
353 | bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf); | |
354 | ||
ccefe4c4 TT |
355 | /* The "quick" (aka partial) symbol functions for this symbol |
356 | reader. */ | |
357 | const struct quick_symbol_functions *qf; | |
3a6c3343 | 358 | }; |
c906108c | 359 | |
567995e1 JK |
360 | extern struct section_addr_info * |
361 | build_section_addr_info_from_objfile (const struct objfile *objfile); | |
362 | ||
75242ef4 JK |
363 | extern void relative_addr_info_to_section_offsets |
364 | (struct section_offsets *section_offsets, int num_sections, | |
365 | struct section_addr_info *addrs); | |
366 | ||
367 | extern void addr_info_make_relative (struct section_addr_info *addrs, | |
368 | bfd *abfd); | |
369 | ||
c906108c SS |
370 | /* The default version of sym_fns.sym_offsets for readers that don't |
371 | do anything special. */ | |
372 | ||
570b8f7c AC |
373 | extern void default_symfile_offsets (struct objfile *objfile, |
374 | struct section_addr_info *); | |
c906108c | 375 | |
31d99776 DJ |
376 | /* The default version of sym_fns.sym_segments for readers that don't |
377 | do anything special. */ | |
378 | ||
379 | extern struct symfile_segment_data *default_symfile_segments (bfd *abfd); | |
c906108c | 380 | |
ac8035ab TG |
381 | /* The default version of sym_fns.sym_relocate for readers that don't |
382 | do anything special. */ | |
383 | ||
384 | extern bfd_byte *default_symfile_relocate (struct objfile *objfile, | |
385 | asection *sectp, bfd_byte *buf); | |
386 | ||
72b9f47f | 387 | extern struct symtab *allocate_symtab (const char *, struct objfile *); |
c906108c | 388 | |
00b5771c | 389 | extern void add_symtab_fns (const struct sym_fns *); |
c906108c | 390 | |
7eedccfa PP |
391 | /* This enum encodes bit-flags passed as ADD_FLAGS parameter to |
392 | syms_from_objfile, symbol_file_add, etc. */ | |
393 | ||
394 | enum symfile_add_flags | |
395 | { | |
396 | /* Be chatty about what you are doing. */ | |
397 | SYMFILE_VERBOSE = 1 << 1, | |
398 | ||
399 | /* This is the main symbol file (as opposed to symbol file for dynamically | |
400 | loaded code). */ | |
401 | SYMFILE_MAINLINE = 1 << 2, | |
402 | ||
403 | /* Do not call breakpoint_re_set when adding this symbol file. */ | |
404 | SYMFILE_DEFER_BP_RESET = 1 << 3 | |
405 | }; | |
406 | ||
7e8580c1 | 407 | extern void syms_from_objfile (struct objfile *, |
3a6c3343 | 408 | struct section_addr_info *, |
7eedccfa | 409 | struct section_offsets *, int, int); |
c906108c | 410 | |
7eedccfa | 411 | extern void new_symfile_objfile (struct objfile *, int); |
c906108c | 412 | |
a14ed312 | 413 | extern struct objfile *symbol_file_add (char *, int, |
7eedccfa | 414 | struct section_addr_info *, int); |
62557bbc | 415 | |
eb4556d7 JB |
416 | extern struct objfile *symbol_file_add_from_bfd (bfd *, int, |
417 | struct section_addr_info *, | |
7eedccfa | 418 | int); |
eb4556d7 | 419 | |
15d123c9 | 420 | extern void symbol_file_add_separate (bfd *, int, struct objfile *); |
9cce227f | 421 | |
15d123c9 | 422 | extern char *find_separate_debug_file_by_debuglink (struct objfile *); |
9cce227f | 423 | |
a39a16c4 MM |
424 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
425 | ||
3a6c3343 AC |
426 | extern struct section_addr_info *alloc_section_addr_info (size_t |
427 | num_sections); | |
a39a16c4 | 428 | |
3a6c3343 AC |
429 | /* Build (allocate and populate) a section_addr_info struct from an |
430 | existing section table. */ | |
62557bbc | 431 | |
3a6c3343 | 432 | extern struct section_addr_info |
0542c86d | 433 | *build_section_addr_info_from_section_table (const struct target_section |
3a6c3343 | 434 | *start, |
0542c86d | 435 | const struct target_section |
3a6c3343 | 436 | *end); |
62557bbc | 437 | |
3a6c3343 AC |
438 | /* Free all memory allocated by |
439 | build_section_addr_info_from_section_table. */ | |
62557bbc | 440 | |
570b8f7c | 441 | extern void free_section_addr_info (struct section_addr_info *); |
62557bbc KB |
442 | |
443 | ||
3a6c3343 AC |
444 | /* Make a copy of the string at PTR with SIZE characters in the symbol |
445 | obstack (and add a null character at the end in the copy). Returns | |
446 | the address of the copy. */ | |
c906108c | 447 | |
63ca651f | 448 | extern char *obsavestring (const char *, int, struct obstack *); |
c906108c | 449 | |
48cb83fd JK |
450 | /* Concatenate NULL terminated variable argument list of `const char *' strings; |
451 | return the new string. Space is found in the OBSTACKP. Argument list must | |
452 | be terminated by a sentinel expression `(char *) NULL'. */ | |
c906108c | 453 | |
48cb83fd | 454 | extern char *obconcat (struct obstack *obstackp, ...) ATTRIBUTE_SENTINEL; |
c906108c SS |
455 | |
456 | /* Variables */ | |
457 | ||
b7209cb4 FF |
458 | /* If non-zero, shared library symbols will be added automatically |
459 | when the inferior is created, new libraries are loaded, or when | |
460 | attaching to the inferior. This is almost always what users will | |
461 | want to have happen; but for very large programs, the startup time | |
462 | will be excessive, and so if this is a problem, the user can clear | |
463 | this flag and then add the shared library symbols as needed. Note | |
464 | that there is a potential for confusion, since if the shared | |
465 | library symbols are not loaded, commands like "info fun" will *not* | |
3a6c3343 | 466 | report all the functions that are actually present. */ |
c906108c | 467 | |
b7209cb4 | 468 | extern int auto_solib_add; |
c906108c | 469 | |
b7209cb4 FF |
470 | /* For systems that support it, a threshold size in megabytes. If |
471 | automatically adding a new library's symbol table to those already | |
472 | known to the debugger would cause the total shared library symbol | |
473 | size to exceed this threshhold, then the shlib's symbols are not | |
474 | added. The threshold is ignored if the user explicitly asks for a | |
3a6c3343 | 475 | shlib to be added, such as when using the "sharedlibrary" command. */ |
c906108c | 476 | |
b7209cb4 | 477 | extern int auto_solib_limit; |
c906108c SS |
478 | |
479 | /* From symfile.c */ | |
480 | ||
8b60591b JB |
481 | extern void set_initial_language (void); |
482 | ||
4efb68b1 | 483 | extern void find_lowest_section (bfd *, asection *, void *); |
c906108c | 484 | |
a14ed312 | 485 | extern bfd *symfile_bfd_open (char *); |
c906108c | 486 | |
874f5765 TG |
487 | extern bfd *bfd_open_maybe_remote (const char *); |
488 | ||
e2f6d8e5 JB |
489 | extern int get_section_index (struct objfile *, char *); |
490 | ||
c906108c | 491 | /* Utility functions for overlay sections: */ |
3a6c3343 AC |
492 | extern enum overlay_debugging_state |
493 | { | |
494 | ovly_off, | |
495 | ovly_on, | |
d874f1e2 MS |
496 | ovly_auto |
497 | } overlay_debugging; | |
c906108c SS |
498 | extern int overlay_cache_invalid; |
499 | ||
3a6c3343 | 500 | /* Return the "mapped" overlay section containing the PC. */ |
714835d5 | 501 | extern struct obj_section *find_pc_mapped_section (CORE_ADDR); |
c906108c | 502 | |
3a6c3343 AC |
503 | /* Return any overlay section containing the PC (even in its LMA |
504 | region). */ | |
714835d5 | 505 | extern struct obj_section *find_pc_overlay (CORE_ADDR); |
c906108c | 506 | |
3a6c3343 | 507 | /* Return true if the section is an overlay. */ |
714835d5 | 508 | extern int section_is_overlay (struct obj_section *); |
c906108c | 509 | |
3a6c3343 | 510 | /* Return true if the overlay section is currently "mapped". */ |
714835d5 | 511 | extern int section_is_mapped (struct obj_section *); |
c906108c | 512 | |
3a6c3343 | 513 | /* Return true if pc belongs to section's VMA. */ |
714835d5 | 514 | extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 515 | |
3a6c3343 | 516 | /* Return true if pc belongs to section's LMA. */ |
714835d5 | 517 | extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 518 | |
3a6c3343 | 519 | /* Map an address from a section's LMA to its VMA. */ |
714835d5 | 520 | extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 521 | |
3a6c3343 | 522 | /* Map an address from a section's VMA to its LMA. */ |
714835d5 | 523 | extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 524 | |
3a6c3343 | 525 | /* Convert an address in an overlay section (force into VMA range). */ |
714835d5 | 526 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
c906108c | 527 | |
3a6c3343 | 528 | /* Load symbols from a file. */ |
1adeb98a FN |
529 | extern void symbol_file_add_main (char *args, int from_tty); |
530 | ||
3a6c3343 | 531 | /* Clear GDB symbol tables. */ |
1adeb98a FN |
532 | extern void symbol_file_clear (int from_tty); |
533 | ||
1c772458 UW |
534 | /* Default overlay update function. */ |
535 | extern void simple_overlay_update (struct obj_section *); | |
536 | ||
ac8035ab TG |
537 | extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, |
538 | bfd_byte *); | |
086df311 | 539 | |
31d99776 DJ |
540 | extern int symfile_map_offsets_to_segments (bfd *, |
541 | struct symfile_segment_data *, | |
542 | struct section_offsets *, | |
543 | int, const CORE_ADDR *); | |
544 | struct symfile_segment_data *get_symfile_segment_data (bfd *abfd); | |
545 | void free_symfile_segment_data (struct symfile_segment_data *data); | |
546 | ||
ccefe4c4 TT |
547 | extern struct cleanup *increment_reading_symtab (void); |
548 | ||
c906108c SS |
549 | /* From dwarf2read.c */ |
550 | ||
c5edf76a | 551 | extern int dwarf2_has_info (struct objfile *); |
c906108c | 552 | |
9291a0cd | 553 | extern int dwarf2_initialize_objfile (struct objfile *); |
f29dff0a | 554 | extern void dwarf2_build_psymtabs (struct objfile *); |
b6af0555 | 555 | extern void dwarf2_build_frame_info (struct objfile *); |
d4f3574e | 556 | |
fe3e1990 DJ |
557 | void dwarf2_free_objfile (struct objfile *); |
558 | ||
c906108c SS |
559 | /* From mdebugread.c */ |
560 | ||
561 | /* Hack to force structures to exist before use in parameter list. */ | |
562 | struct ecoff_debug_hack | |
3a6c3343 AC |
563 | { |
564 | struct ecoff_debug_swap *a; | |
565 | struct ecoff_debug_info *b; | |
566 | }; | |
567 | ||
568 | extern void mdebug_build_psymtabs (struct objfile *, | |
569 | const struct ecoff_debug_swap *, | |
570 | struct ecoff_debug_info *); | |
571 | ||
572 | extern void elfmdebug_build_psymtabs (struct objfile *, | |
573 | const struct ecoff_debug_swap *, | |
574 | asection *); | |
c906108c | 575 | |
c5aa993b | 576 | #endif /* !defined(SYMFILE_H) */ |