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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, |
7b6bb8da | 4 | 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010, 2011 |
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 | |
2edb89d3 JK |
35 | /* Comparison function for symbol look ups. */ |
36 | ||
37 | typedef int (symbol_compare_ftype) (const char *string1, | |
38 | const char *string2); | |
39 | ||
3a6c3343 AC |
40 | /* Partial symbols are stored in the psymbol_cache and pointers to |
41 | them are kept in a dynamically grown array that is obtained from | |
42 | malloc and grown as necessary via realloc. Each objfile typically | |
43 | has two of these, one for global symbols and one for static | |
44 | symbols. Although this adds a level of indirection for storing or | |
45 | accessing the partial symbols, it allows us to throw away duplicate | |
46 | psymbols and set all pointers to the single saved instance. */ | |
c906108c | 47 | |
c5aa993b | 48 | struct psymbol_allocation_list |
3a6c3343 | 49 | { |
c906108c | 50 | |
3a6c3343 AC |
51 | /* Pointer to beginning of dynamically allocated array of pointers |
52 | to partial symbols. The array is dynamically expanded as | |
53 | necessary to accommodate more pointers. */ | |
c906108c | 54 | |
3a6c3343 | 55 | struct partial_symbol **list; |
c906108c | 56 | |
3a6c3343 AC |
57 | /* Pointer to next available slot in which to store a pointer to a |
58 | partial symbol. */ | |
c906108c | 59 | |
3a6c3343 | 60 | struct partial_symbol **next; |
c906108c | 61 | |
3a6c3343 AC |
62 | /* Number of allocated pointer slots in current dynamic array (not |
63 | the number of bytes of storage). The "next" pointer will always | |
64 | point somewhere between list[0] and list[size], and when at | |
65 | list[size] the array will be expanded on the next attempt to | |
66 | store a pointer. */ | |
c906108c | 67 | |
3a6c3343 AC |
68 | int size; |
69 | }; | |
c906108c | 70 | |
62557bbc KB |
71 | /* Define an array of addresses to accommodate non-contiguous dynamic |
72 | loading of modules. This is for use when entering commands, so we | |
3a6c3343 AC |
73 | can keep track of the section names until we read the file and can |
74 | map them to bfd sections. This structure is also used by solib.c | |
75 | to communicate the section addresses in shared objects to | |
76 | symbol_file_add (). */ | |
77 | ||
78 | struct section_addr_info | |
62557bbc | 79 | { |
a39a16c4 MM |
80 | /* The number of sections for which address information is |
81 | available. */ | |
82 | size_t num_sections; | |
c378eb4e | 83 | /* Sections whose names are file format dependent. */ |
62557bbc KB |
84 | struct other_sections |
85 | { | |
86 | CORE_ADDR addr; | |
87 | char *name; | |
672d9c23 | 88 | |
5488dafb | 89 | /* SECTINDEX must be valid for associated BFD or set to -1. */ |
62557bbc | 90 | int sectindex; |
a39a16c4 | 91 | } other[1]; |
62557bbc KB |
92 | }; |
93 | ||
28c32713 JB |
94 | |
95 | /* A table listing the load segments in a symfile, and which segment | |
96 | each BFD section belongs to. */ | |
31d99776 DJ |
97 | struct symfile_segment_data |
98 | { | |
99 | /* How many segments are present in this file. If there are | |
100 | two, the text segment is the first one and the data segment | |
101 | is the second one. */ | |
102 | int num_segments; | |
103 | ||
104 | /* If NUM_SEGMENTS is greater than zero, the original base address | |
105 | of each segment. */ | |
106 | CORE_ADDR *segment_bases; | |
107 | ||
108 | /* If NUM_SEGMENTS is greater than zero, the memory size of each | |
109 | segment. */ | |
110 | CORE_ADDR *segment_sizes; | |
111 | ||
112 | /* If NUM_SEGMENTS is greater than zero, this is an array of entries | |
28c32713 JB |
113 | recording which segment contains each BFD section. |
114 | SEGMENT_INFO[I] is S+1 if the I'th BFD section belongs to segment | |
115 | S, or zero if it is not in any segment. */ | |
31d99776 DJ |
116 | int *segment_info; |
117 | }; | |
118 | ||
ccefe4c4 TT |
119 | /* The "quick" symbol functions exist so that symbol readers can |
120 | avoiding an initial read of all the symbols. For example, symbol | |
121 | readers might choose to use the "partial symbol table" utilities, | |
122 | which is one implementation of the quick symbol functions. | |
123 | ||
124 | The quick symbol functions are generally opaque: the underlying | |
125 | representation is hidden from the caller. | |
126 | ||
127 | In general, these functions should only look at whatever special | |
128 | index the symbol reader creates -- looking through the symbol | |
129 | tables themselves is handled by generic code. If a function is | |
130 | defined as returning a "symbol table", this means that the function | |
131 | should only return a newly-created symbol table; it should not | |
132 | examine pre-existing ones. | |
133 | ||
134 | The exact list of functions here was determined in an ad hoc way | |
135 | based on gdb's history. */ | |
136 | ||
137 | struct quick_symbol_functions | |
138 | { | |
139 | /* Return true if this objfile has any "partial" symbols | |
140 | available. */ | |
141 | int (*has_symbols) (struct objfile *objfile); | |
142 | ||
143 | /* Return the symbol table for the "last" file appearing in | |
144 | OBJFILE. */ | |
145 | struct symtab *(*find_last_source_symtab) (struct objfile *objfile); | |
146 | ||
147 | /* Forget all cached full file names for OBJFILE. */ | |
148 | void (*forget_cached_source_info) (struct objfile *objfile); | |
149 | ||
150 | /* Look up the symbol table, in OBJFILE, of a source file named | |
151 | NAME. If there is no '/' in the name, a match after a '/' in the | |
152 | symbol table's file name will also work. FULL_PATH is the | |
153 | absolute file name, and REAL_PATH is the same, run through | |
154 | gdb_realpath. | |
155 | ||
156 | If no such symbol table can be found, returns 0. | |
157 | ||
158 | Otherwise, sets *RESULT to the symbol table and returns 1. This | |
159 | might return 1 and set *RESULT to NULL if the requested file is | |
160 | an include file that does not have a symtab of its own. */ | |
161 | int (*lookup_symtab) (struct objfile *objfile, | |
162 | const char *name, | |
163 | const char *full_path, | |
164 | const char *real_path, | |
165 | struct symtab **result); | |
166 | ||
167 | /* Check to see if the symbol is defined in a "partial" symbol table | |
168 | of OBJFILE. KIND should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
169 | depending on whether we want to search global symbols or static | |
170 | symbols. NAME is the name of the symbol to look for. DOMAIN | |
171 | indicates what sort of symbol to search for. | |
172 | ||
173 | Returns the newly-expanded symbol table in which the symbol is | |
174 | defined, or NULL if no such symbol table exists. */ | |
175 | struct symtab *(*lookup_symbol) (struct objfile *objfile, | |
176 | int kind, const char *name, | |
177 | domain_enum domain); | |
178 | ||
774b6a14 TT |
179 | /* This is called to expand symbol tables before looking up a |
180 | symbol. A backend can choose to implement this and then have its | |
181 | `lookup_symbol' hook always return NULL, or the reverse. (It | |
182 | doesn't make sense to implement both.) The arguments are as for | |
183 | `lookup_symbol'. */ | |
184 | void (*pre_expand_symtabs_matching) (struct objfile *objfile, | |
8903c50d TT |
185 | enum block_enum block_kind, |
186 | const char *name, | |
774b6a14 | 187 | domain_enum domain); |
58b6ab13 | 188 | |
ccefe4c4 TT |
189 | /* Print statistics about any indices loaded for OBJFILE. The |
190 | statistics should be printed to gdb_stdout. This is used for | |
191 | "maint print statistics". */ | |
192 | void (*print_stats) (struct objfile *objfile); | |
193 | ||
194 | /* Dump any indices loaded for OBJFILE. The dump should go to | |
195 | gdb_stdout. This is used for "maint print objfiles". */ | |
196 | void (*dump) (struct objfile *objfile); | |
197 | ||
198 | /* This is called by objfile_relocate to relocate any indices loaded | |
199 | for OBJFILE. */ | |
200 | void (*relocate) (struct objfile *objfile, | |
201 | struct section_offsets *new_offsets, | |
202 | struct section_offsets *delta); | |
203 | ||
204 | /* Find all the symbols in OBJFILE named FUNC_NAME, and ensure that | |
205 | the corresponding symbol tables are loaded. */ | |
206 | void (*expand_symtabs_for_function) (struct objfile *objfile, | |
207 | const char *func_name); | |
208 | ||
209 | /* Read all symbol tables associated with OBJFILE. */ | |
210 | void (*expand_all_symtabs) (struct objfile *objfile); | |
211 | ||
212 | /* Read all symbol tables associated with OBJFILE which have the | |
d4637a04 DE |
213 | file name FILENAME. |
214 | This is for the purposes of examining code only, e.g., expand_line_sal. | |
215 | The routine may ignore debug info that is known to not be useful with | |
216 | code, e.g., DW_TAG_type_unit for dwarf debug info. */ | |
ccefe4c4 TT |
217 | void (*expand_symtabs_with_filename) (struct objfile *objfile, |
218 | const char *filename); | |
219 | ||
220 | /* Return the file name of the file holding the symbol in OBJFILE | |
221 | named NAME. If no such symbol exists in OBJFILE, return NULL. */ | |
dd786858 | 222 | const char *(*find_symbol_file) (struct objfile *objfile, const char *name); |
ccefe4c4 | 223 | |
40658b94 PH |
224 | /* Find global or static symbols in all tables that are in NAMESPACE |
225 | and for which MATCH (symbol name, NAME) == 0, passing each to | |
226 | CALLBACK, reading in partial symbol symbol tables as needed. Look | |
c378eb4e | 227 | through global symbols if GLOBAL and otherwise static symbols. |
40658b94 PH |
228 | Passes NAME, NAMESPACE, and DATA to CALLBACK with each symbol |
229 | found. After each block is processed, passes NULL to CALLBACK. | |
230 | MATCH must be weaker than strcmp_iw in the sense that | |
231 | strcmp_iw(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE, if | |
232 | non-null, must be an ordering relation compatible with strcmp_iw | |
233 | in the sense that | |
234 | strcmp(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0 | |
235 | and | |
236 | strcmp(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0 | |
c378eb4e | 237 | (allowing strcmp(x,y) < 0 while ORDERED_COMPARE(x, y) == 0). |
40658b94 PH |
238 | CALLBACK returns 0 to indicate that the scan should continue, or |
239 | non-zero to indicate that the scan should be terminated. */ | |
240 | ||
241 | void (*map_matching_symbols) (const char *name, domain_enum namespace, | |
242 | struct objfile *, int global, | |
243 | int (*callback) (struct block *, | |
244 | struct symbol *, void *), | |
245 | void *data, | |
2edb89d3 JK |
246 | symbol_compare_ftype *match, |
247 | symbol_compare_ftype *ordered_compare); | |
ccefe4c4 TT |
248 | |
249 | /* Expand all symbol tables in OBJFILE matching some criteria. | |
250 | ||
251 | FILE_MATCHER is called for each file in OBJFILE. The file name | |
252 | and the DATA argument are passed to it. If it returns zero, this | |
7b08b9eb | 253 | file is skipped. If FILE_MATCHER is NULL such file is not skipped. |
ccefe4c4 | 254 | |
7b08b9eb JK |
255 | Otherwise, if KIND does not match this symbol is skipped. |
256 | ||
257 | If even KIND matches, then NAME_MATCHER is called for each symbol defined | |
258 | in the file. The symbol's "natural" name and DATA are passed to | |
259 | NAME_MATCHER. | |
ccefe4c4 TT |
260 | |
261 | If NAME_MATCHER returns zero, then this symbol is skipped. | |
262 | ||
7b08b9eb JK |
263 | Otherwise, this symbol's symbol table is expanded. |
264 | ||
ccefe4c4 TT |
265 | DATA is user data that is passed unmodified to the callback |
266 | functions. */ | |
267 | void (*expand_symtabs_matching) (struct objfile *objfile, | |
268 | int (*file_matcher) (const char *, void *), | |
269 | int (*name_matcher) (const char *, void *), | |
8903c50d | 270 | enum search_domain kind, |
ccefe4c4 TT |
271 | void *data); |
272 | ||
273 | /* Return the symbol table from OBJFILE that contains PC and | |
274 | SECTION. Return NULL if there is no such symbol table. This | |
275 | should return the symbol table that contains a symbol whose | |
276 | address exactly matches PC, or, if there is no exact match, the | |
277 | symbol table that contains a symbol whose address is closest to | |
278 | PC. */ | |
279 | struct symtab *(*find_pc_sect_symtab) (struct objfile *objfile, | |
280 | struct minimal_symbol *msymbol, | |
281 | CORE_ADDR pc, | |
282 | struct obj_section *section, | |
283 | int warn_if_readin); | |
284 | ||
ad727bb2 DE |
285 | /* Call a callback for every file defined in OBJFILE whose symtab is |
286 | not already read in. FUN is the callback. It is passed the file's name, | |
287 | the file's full name, and the DATA passed to this function. */ | |
ccefe4c4 TT |
288 | void (*map_symbol_filenames) (struct objfile *objfile, |
289 | void (*fun) (const char *, const char *, | |
290 | void *), | |
291 | void *data); | |
292 | }; | |
293 | ||
c906108c SS |
294 | /* Structure to keep track of symbol reading functions for various |
295 | object file types. */ | |
296 | ||
c5aa993b | 297 | struct sym_fns |
3a6c3343 | 298 | { |
c906108c | 299 | |
3a6c3343 AC |
300 | /* BFD flavour that we handle, or (as a special kludge, see |
301 | xcoffread.c, (enum bfd_flavour)-1 for xcoff). */ | |
c906108c | 302 | |
3a6c3343 | 303 | enum bfd_flavour sym_flavour; |
c906108c | 304 | |
3a6c3343 AC |
305 | /* Initializes anything that is global to the entire symbol table. |
306 | It is called during symbol_file_add, when we begin debugging an | |
307 | entirely new program. */ | |
c906108c | 308 | |
3a6c3343 | 309 | void (*sym_new_init) (struct objfile *); |
c906108c | 310 | |
3a6c3343 AC |
311 | /* Reads any initial information from a symbol file, and initializes |
312 | the struct sym_fns SF in preparation for sym_read(). It is | |
313 | called every time we read a symbol file for any reason. */ | |
c906108c | 314 | |
3a6c3343 | 315 | void (*sym_init) (struct objfile *); |
c906108c | 316 | |
f4352531 | 317 | /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab |
3a6c3343 | 318 | (or possibly a symtab). OBJFILE is the objfile struct for the |
f4352531 TG |
319 | file we are reading. SYMFILE_FLAGS are the flags passed to |
320 | symbol_file_add & co. */ | |
c906108c | 321 | |
3a6c3343 | 322 | void (*sym_read) (struct objfile *, int); |
c906108c | 323 | |
3e03848b JK |
324 | /* Read the partial symbols for an objfile. This may be NULL, in which case |
325 | gdb has to check other ways if this objfile has any symbols. This may | |
326 | only be non-NULL if the objfile actually does have debuginfo available. | |
327 | */ | |
b11896a5 TT |
328 | |
329 | void (*sym_read_psymbols) (struct objfile *); | |
330 | ||
3a6c3343 AC |
331 | /* Called when we are finished with an objfile. Should do all |
332 | cleanup that is specific to the object file format for the | |
333 | particular objfile. */ | |
c906108c | 334 | |
3a6c3343 | 335 | void (*sym_finish) (struct objfile *); |
c906108c | 336 | |
3a6c3343 AC |
337 | /* This function produces a file-dependent section_offsets |
338 | structure, allocated in the objfile's storage, and based on the | |
339 | parameter. The parameter is currently a CORE_ADDR (FIXME!) for | |
340 | backward compatibility with the higher levels of GDB. It should | |
341 | probably be changed to a string, where NULL means the default, | |
342 | and others are parsed in a file dependent way. */ | |
c906108c | 343 | |
3a6c3343 | 344 | void (*sym_offsets) (struct objfile *, struct section_addr_info *); |
c906108c | 345 | |
31d99776 DJ |
346 | /* This function produces a format-independent description of |
347 | the segments of ABFD. Each segment is a unit of the file | |
348 | which may be relocated independently. */ | |
349 | ||
350 | struct symfile_segment_data *(*sym_segments) (bfd *abfd); | |
351 | ||
c295b2e5 JB |
352 | /* This function should read the linetable from the objfile when |
353 | the line table cannot be read while processing the debugging | |
354 | information. */ | |
ac8035ab | 355 | |
c295b2e5 JB |
356 | void (*sym_read_linetable) (void); |
357 | ||
ac8035ab TG |
358 | /* Relocate the contents of a debug section SECTP. The |
359 | contents are stored in BUF if it is non-NULL, or returned in a | |
360 | malloc'd buffer otherwise. */ | |
361 | ||
362 | bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf); | |
363 | ||
ccefe4c4 TT |
364 | /* The "quick" (aka partial) symbol functions for this symbol |
365 | reader. */ | |
366 | const struct quick_symbol_functions *qf; | |
3a6c3343 | 367 | }; |
c906108c | 368 | |
567995e1 | 369 | extern struct section_addr_info * |
3e43a32a | 370 | build_section_addr_info_from_objfile (const struct objfile *objfile); |
567995e1 | 371 | |
75242ef4 JK |
372 | extern void relative_addr_info_to_section_offsets |
373 | (struct section_offsets *section_offsets, int num_sections, | |
374 | struct section_addr_info *addrs); | |
375 | ||
376 | extern void addr_info_make_relative (struct section_addr_info *addrs, | |
377 | bfd *abfd); | |
378 | ||
c906108c SS |
379 | /* The default version of sym_fns.sym_offsets for readers that don't |
380 | do anything special. */ | |
381 | ||
570b8f7c AC |
382 | extern void default_symfile_offsets (struct objfile *objfile, |
383 | struct section_addr_info *); | |
c906108c | 384 | |
31d99776 DJ |
385 | /* The default version of sym_fns.sym_segments for readers that don't |
386 | do anything special. */ | |
387 | ||
388 | extern struct symfile_segment_data *default_symfile_segments (bfd *abfd); | |
c906108c | 389 | |
ac8035ab TG |
390 | /* The default version of sym_fns.sym_relocate for readers that don't |
391 | do anything special. */ | |
392 | ||
393 | extern bfd_byte *default_symfile_relocate (struct objfile *objfile, | |
394 | asection *sectp, bfd_byte *buf); | |
395 | ||
72b9f47f | 396 | extern struct symtab *allocate_symtab (const char *, struct objfile *); |
c906108c | 397 | |
00b5771c | 398 | extern void add_symtab_fns (const struct sym_fns *); |
c906108c | 399 | |
7eedccfa PP |
400 | /* This enum encodes bit-flags passed as ADD_FLAGS parameter to |
401 | syms_from_objfile, symbol_file_add, etc. */ | |
402 | ||
403 | enum symfile_add_flags | |
404 | { | |
405 | /* Be chatty about what you are doing. */ | |
406 | SYMFILE_VERBOSE = 1 << 1, | |
407 | ||
408 | /* This is the main symbol file (as opposed to symbol file for dynamically | |
409 | loaded code). */ | |
410 | SYMFILE_MAINLINE = 1 << 2, | |
411 | ||
412 | /* Do not call breakpoint_re_set when adding this symbol file. */ | |
b11896a5 TT |
413 | SYMFILE_DEFER_BP_RESET = 1 << 3, |
414 | ||
415 | /* Do not immediately read symbols for this file. By default, | |
416 | symbols are read when the objfile is created. */ | |
417 | SYMFILE_NO_READ = 1 << 4 | |
7eedccfa PP |
418 | }; |
419 | ||
7e8580c1 | 420 | extern void syms_from_objfile (struct objfile *, |
3a6c3343 | 421 | struct section_addr_info *, |
7eedccfa | 422 | struct section_offsets *, int, int); |
c906108c | 423 | |
7eedccfa | 424 | extern void new_symfile_objfile (struct objfile *, int); |
c906108c | 425 | |
a14ed312 | 426 | extern struct objfile *symbol_file_add (char *, int, |
7eedccfa | 427 | struct section_addr_info *, int); |
62557bbc | 428 | |
eb4556d7 JB |
429 | extern struct objfile *symbol_file_add_from_bfd (bfd *, int, |
430 | struct section_addr_info *, | |
63524580 | 431 | int, struct objfile *parent); |
eb4556d7 | 432 | |
15d123c9 | 433 | extern void symbol_file_add_separate (bfd *, int, struct objfile *); |
9cce227f | 434 | |
15d123c9 | 435 | extern char *find_separate_debug_file_by_debuglink (struct objfile *); |
9cce227f | 436 | |
a39a16c4 MM |
437 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
438 | ||
3a6c3343 AC |
439 | extern struct section_addr_info *alloc_section_addr_info (size_t |
440 | num_sections); | |
a39a16c4 | 441 | |
3a6c3343 AC |
442 | /* Build (allocate and populate) a section_addr_info struct from an |
443 | existing section table. */ | |
62557bbc | 444 | |
3a6c3343 | 445 | extern struct section_addr_info |
0542c86d | 446 | *build_section_addr_info_from_section_table (const struct target_section |
3a6c3343 | 447 | *start, |
0542c86d | 448 | const struct target_section |
3a6c3343 | 449 | *end); |
62557bbc | 450 | |
3a6c3343 AC |
451 | /* Free all memory allocated by |
452 | build_section_addr_info_from_section_table. */ | |
62557bbc | 453 | |
570b8f7c | 454 | extern void free_section_addr_info (struct section_addr_info *); |
62557bbc KB |
455 | |
456 | ||
3a6c3343 AC |
457 | /* Make a copy of the string at PTR with SIZE characters in the symbol |
458 | obstack (and add a null character at the end in the copy). Returns | |
459 | the address of the copy. */ | |
c906108c | 460 | |
63ca651f | 461 | extern char *obsavestring (const char *, int, struct obstack *); |
c906108c | 462 | |
3e43a32a MS |
463 | /* Concatenate NULL terminated variable argument list of `const char |
464 | *' strings; return the new string. Space is found in the OBSTACKP. | |
465 | Argument list must be terminated by a sentinel expression `(char *) | |
466 | NULL'. */ | |
c906108c | 467 | |
48cb83fd | 468 | extern char *obconcat (struct obstack *obstackp, ...) ATTRIBUTE_SENTINEL; |
c906108c SS |
469 | |
470 | /* Variables */ | |
471 | ||
b7209cb4 FF |
472 | /* If non-zero, shared library symbols will be added automatically |
473 | when the inferior is created, new libraries are loaded, or when | |
474 | attaching to the inferior. This is almost always what users will | |
475 | want to have happen; but for very large programs, the startup time | |
476 | will be excessive, and so if this is a problem, the user can clear | |
477 | this flag and then add the shared library symbols as needed. Note | |
478 | that there is a potential for confusion, since if the shared | |
479 | library symbols are not loaded, commands like "info fun" will *not* | |
3a6c3343 | 480 | report all the functions that are actually present. */ |
c906108c | 481 | |
b7209cb4 | 482 | extern int auto_solib_add; |
c906108c | 483 | |
c906108c SS |
484 | /* From symfile.c */ |
485 | ||
8b60591b JB |
486 | extern void set_initial_language (void); |
487 | ||
4efb68b1 | 488 | extern void find_lowest_section (bfd *, asection *, void *); |
c906108c | 489 | |
a14ed312 | 490 | extern bfd *symfile_bfd_open (char *); |
c906108c | 491 | |
874f5765 TG |
492 | extern bfd *bfd_open_maybe_remote (const char *); |
493 | ||
e2f6d8e5 JB |
494 | extern int get_section_index (struct objfile *, char *); |
495 | ||
c906108c | 496 | /* Utility functions for overlay sections: */ |
3a6c3343 AC |
497 | extern enum overlay_debugging_state |
498 | { | |
499 | ovly_off, | |
500 | ovly_on, | |
d874f1e2 MS |
501 | ovly_auto |
502 | } overlay_debugging; | |
c906108c SS |
503 | extern int overlay_cache_invalid; |
504 | ||
3a6c3343 | 505 | /* Return the "mapped" overlay section containing the PC. */ |
714835d5 | 506 | extern struct obj_section *find_pc_mapped_section (CORE_ADDR); |
c906108c | 507 | |
3a6c3343 AC |
508 | /* Return any overlay section containing the PC (even in its LMA |
509 | region). */ | |
714835d5 | 510 | extern struct obj_section *find_pc_overlay (CORE_ADDR); |
c906108c | 511 | |
3a6c3343 | 512 | /* Return true if the section is an overlay. */ |
714835d5 | 513 | extern int section_is_overlay (struct obj_section *); |
c906108c | 514 | |
3a6c3343 | 515 | /* Return true if the overlay section is currently "mapped". */ |
714835d5 | 516 | extern int section_is_mapped (struct obj_section *); |
c906108c | 517 | |
3a6c3343 | 518 | /* Return true if pc belongs to section's VMA. */ |
714835d5 | 519 | extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 520 | |
3a6c3343 | 521 | /* Return true if pc belongs to section's LMA. */ |
714835d5 | 522 | extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 523 | |
3a6c3343 | 524 | /* Map an address from a section's LMA to its VMA. */ |
714835d5 | 525 | extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 526 | |
3a6c3343 | 527 | /* Map an address from a section's VMA to its LMA. */ |
714835d5 | 528 | extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 529 | |
3a6c3343 | 530 | /* Convert an address in an overlay section (force into VMA range). */ |
714835d5 | 531 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
c906108c | 532 | |
3a6c3343 | 533 | /* Load symbols from a file. */ |
1adeb98a FN |
534 | extern void symbol_file_add_main (char *args, int from_tty); |
535 | ||
3a6c3343 | 536 | /* Clear GDB symbol tables. */ |
1adeb98a FN |
537 | extern void symbol_file_clear (int from_tty); |
538 | ||
1c772458 UW |
539 | /* Default overlay update function. */ |
540 | extern void simple_overlay_update (struct obj_section *); | |
541 | ||
ac8035ab TG |
542 | extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, |
543 | bfd_byte *); | |
086df311 | 544 | |
31d99776 DJ |
545 | extern int symfile_map_offsets_to_segments (bfd *, |
546 | struct symfile_segment_data *, | |
547 | struct section_offsets *, | |
548 | int, const CORE_ADDR *); | |
549 | struct symfile_segment_data *get_symfile_segment_data (bfd *abfd); | |
550 | void free_symfile_segment_data (struct symfile_segment_data *data); | |
551 | ||
ccefe4c4 TT |
552 | extern struct cleanup *increment_reading_symtab (void); |
553 | ||
c906108c SS |
554 | /* From dwarf2read.c */ |
555 | ||
c5edf76a | 556 | extern int dwarf2_has_info (struct objfile *); |
c906108c | 557 | |
9291a0cd | 558 | extern int dwarf2_initialize_objfile (struct objfile *); |
f29dff0a | 559 | extern void dwarf2_build_psymtabs (struct objfile *); |
b6af0555 | 560 | extern void dwarf2_build_frame_info (struct objfile *); |
d4f3574e | 561 | |
fe3e1990 DJ |
562 | void dwarf2_free_objfile (struct objfile *); |
563 | ||
c906108c SS |
564 | /* From mdebugread.c */ |
565 | ||
566 | /* Hack to force structures to exist before use in parameter list. */ | |
567 | struct ecoff_debug_hack | |
3a6c3343 AC |
568 | { |
569 | struct ecoff_debug_swap *a; | |
570 | struct ecoff_debug_info *b; | |
571 | }; | |
572 | ||
573 | extern void mdebug_build_psymtabs (struct objfile *, | |
574 | const struct ecoff_debug_swap *, | |
575 | struct ecoff_debug_info *); | |
576 | ||
577 | extern void elfmdebug_build_psymtabs (struct objfile *, | |
578 | const struct ecoff_debug_swap *, | |
579 | asection *); | |
c906108c | 580 | |
c5aa993b | 581 | #endif /* !defined(SYMFILE_H) */ |