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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 | ||
44b13c5a JK |
119 | /* Callback for quick_symbol_functions->map_symbol_filenames. */ |
120 | ||
121 | typedef void (symbol_filename_ftype) (const char *filename, | |
122 | const char *fullname, void *data); | |
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 | ||
155 | /* Look up the symbol table, in OBJFILE, of a source file named | |
156 | NAME. If there is no '/' in the name, a match after a '/' in the | |
157 | symbol table's file name will also work. FULL_PATH is the | |
158 | absolute file name, and REAL_PATH is the same, run through | |
159 | gdb_realpath. | |
160 | ||
161 | If no such symbol table can be found, returns 0. | |
162 | ||
163 | Otherwise, sets *RESULT to the symbol table and returns 1. This | |
164 | might return 1 and set *RESULT to NULL if the requested file is | |
165 | an include file that does not have a symtab of its own. */ | |
166 | int (*lookup_symtab) (struct objfile *objfile, | |
167 | const char *name, | |
168 | const char *full_path, | |
169 | const char *real_path, | |
170 | struct symtab **result); | |
171 | ||
172 | /* Check to see if the symbol is defined in a "partial" symbol table | |
173 | of OBJFILE. KIND should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
174 | depending on whether we want to search global symbols or static | |
175 | symbols. NAME is the name of the symbol to look for. DOMAIN | |
176 | indicates what sort of symbol to search for. | |
177 | ||
178 | Returns the newly-expanded symbol table in which the symbol is | |
179 | defined, or NULL if no such symbol table exists. */ | |
180 | struct symtab *(*lookup_symbol) (struct objfile *objfile, | |
181 | int kind, const char *name, | |
182 | domain_enum domain); | |
183 | ||
774b6a14 TT |
184 | /* This is called to expand symbol tables before looking up a |
185 | symbol. A backend can choose to implement this and then have its | |
186 | `lookup_symbol' hook always return NULL, or the reverse. (It | |
187 | doesn't make sense to implement both.) The arguments are as for | |
188 | `lookup_symbol'. */ | |
189 | void (*pre_expand_symtabs_matching) (struct objfile *objfile, | |
8903c50d TT |
190 | enum block_enum block_kind, |
191 | const char *name, | |
774b6a14 | 192 | domain_enum domain); |
58b6ab13 | 193 | |
ccefe4c4 TT |
194 | /* Print statistics about any indices loaded for OBJFILE. The |
195 | statistics should be printed to gdb_stdout. This is used for | |
196 | "maint print statistics". */ | |
197 | void (*print_stats) (struct objfile *objfile); | |
198 | ||
199 | /* Dump any indices loaded for OBJFILE. The dump should go to | |
200 | gdb_stdout. This is used for "maint print objfiles". */ | |
201 | void (*dump) (struct objfile *objfile); | |
202 | ||
203 | /* This is called by objfile_relocate to relocate any indices loaded | |
204 | for OBJFILE. */ | |
205 | void (*relocate) (struct objfile *objfile, | |
206 | struct section_offsets *new_offsets, | |
207 | struct section_offsets *delta); | |
208 | ||
209 | /* Find all the symbols in OBJFILE named FUNC_NAME, and ensure that | |
210 | the corresponding symbol tables are loaded. */ | |
211 | void (*expand_symtabs_for_function) (struct objfile *objfile, | |
212 | const char *func_name); | |
213 | ||
214 | /* Read all symbol tables associated with OBJFILE. */ | |
215 | void (*expand_all_symtabs) (struct objfile *objfile); | |
216 | ||
217 | /* Read all symbol tables associated with OBJFILE which have the | |
d4637a04 DE |
218 | file name FILENAME. |
219 | This is for the purposes of examining code only, e.g., expand_line_sal. | |
220 | The routine may ignore debug info that is known to not be useful with | |
221 | code, e.g., DW_TAG_type_unit for dwarf debug info. */ | |
ccefe4c4 TT |
222 | void (*expand_symtabs_with_filename) (struct objfile *objfile, |
223 | const char *filename); | |
224 | ||
741f5e3c | 225 | /* Return the file name of the file holding the global symbol in OBJFILE |
ccefe4c4 | 226 | named NAME. If no such symbol exists in OBJFILE, return NULL. */ |
dd786858 | 227 | const char *(*find_symbol_file) (struct objfile *objfile, const char *name); |
ccefe4c4 | 228 | |
40658b94 PH |
229 | /* Find global or static symbols in all tables that are in NAMESPACE |
230 | and for which MATCH (symbol name, NAME) == 0, passing each to | |
231 | CALLBACK, reading in partial symbol symbol tables as needed. Look | |
c378eb4e | 232 | through global symbols if GLOBAL and otherwise static symbols. |
40658b94 PH |
233 | Passes NAME, NAMESPACE, and DATA to CALLBACK with each symbol |
234 | found. After each block is processed, passes NULL to CALLBACK. | |
235 | MATCH must be weaker than strcmp_iw in the sense that | |
236 | strcmp_iw(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE, if | |
237 | non-null, must be an ordering relation compatible with strcmp_iw | |
238 | in the sense that | |
239 | strcmp(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0 | |
240 | and | |
241 | strcmp(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0 | |
c378eb4e | 242 | (allowing strcmp(x,y) < 0 while ORDERED_COMPARE(x, y) == 0). |
40658b94 PH |
243 | CALLBACK returns 0 to indicate that the scan should continue, or |
244 | non-zero to indicate that the scan should be terminated. */ | |
245 | ||
246 | void (*map_matching_symbols) (const char *name, domain_enum namespace, | |
247 | struct objfile *, int global, | |
248 | int (*callback) (struct block *, | |
249 | struct symbol *, void *), | |
250 | void *data, | |
2edb89d3 JK |
251 | symbol_compare_ftype *match, |
252 | symbol_compare_ftype *ordered_compare); | |
ccefe4c4 TT |
253 | |
254 | /* Expand all symbol tables in OBJFILE matching some criteria. | |
255 | ||
256 | FILE_MATCHER is called for each file in OBJFILE. The file name | |
257 | and the DATA argument are passed to it. If it returns zero, this | |
7b08b9eb | 258 | file is skipped. If FILE_MATCHER is NULL such file is not skipped. |
ccefe4c4 | 259 | |
7b08b9eb JK |
260 | Otherwise, if KIND does not match this symbol is skipped. |
261 | ||
262 | If even KIND matches, then NAME_MATCHER is called for each symbol defined | |
263 | in the file. The symbol's "natural" name and DATA are passed to | |
264 | NAME_MATCHER. | |
ccefe4c4 TT |
265 | |
266 | If NAME_MATCHER returns zero, then this symbol is skipped. | |
267 | ||
7b08b9eb JK |
268 | Otherwise, this symbol's symbol table is expanded. |
269 | ||
ccefe4c4 TT |
270 | DATA is user data that is passed unmodified to the callback |
271 | functions. */ | |
272 | void (*expand_symtabs_matching) (struct objfile *objfile, | |
273 | int (*file_matcher) (const char *, void *), | |
274 | int (*name_matcher) (const char *, void *), | |
8903c50d | 275 | enum search_domain kind, |
ccefe4c4 TT |
276 | void *data); |
277 | ||
278 | /* Return the symbol table from OBJFILE that contains PC and | |
279 | SECTION. Return NULL if there is no such symbol table. This | |
280 | should return the symbol table that contains a symbol whose | |
281 | address exactly matches PC, or, if there is no exact match, the | |
282 | symbol table that contains a symbol whose address is closest to | |
283 | PC. */ | |
284 | struct symtab *(*find_pc_sect_symtab) (struct objfile *objfile, | |
285 | struct minimal_symbol *msymbol, | |
286 | CORE_ADDR pc, | |
287 | struct obj_section *section, | |
288 | int warn_if_readin); | |
289 | ||
ad727bb2 | 290 | /* Call a callback for every file defined in OBJFILE whose symtab is |
44b13c5a | 291 | not already read in. FUN is the callback. It is passed the file's |
74e2f255 DE |
292 | FILENAME, the file's FULLNAME (if need_fullname is non-zero), and |
293 | the DATA passed to this function. */ | |
ccefe4c4 | 294 | void (*map_symbol_filenames) (struct objfile *objfile, |
74e2f255 DE |
295 | symbol_filename_ftype *fun, void *data, |
296 | int need_fullname); | |
ccefe4c4 TT |
297 | }; |
298 | ||
c906108c SS |
299 | /* Structure to keep track of symbol reading functions for various |
300 | object file types. */ | |
301 | ||
c5aa993b | 302 | struct sym_fns |
3a6c3343 | 303 | { |
c906108c | 304 | |
3a6c3343 AC |
305 | /* BFD flavour that we handle, or (as a special kludge, see |
306 | xcoffread.c, (enum bfd_flavour)-1 for xcoff). */ | |
c906108c | 307 | |
3a6c3343 | 308 | enum bfd_flavour sym_flavour; |
c906108c | 309 | |
3a6c3343 AC |
310 | /* Initializes anything that is global to the entire symbol table. |
311 | It is called during symbol_file_add, when we begin debugging an | |
312 | entirely new program. */ | |
c906108c | 313 | |
3a6c3343 | 314 | void (*sym_new_init) (struct objfile *); |
c906108c | 315 | |
3a6c3343 AC |
316 | /* Reads any initial information from a symbol file, and initializes |
317 | the struct sym_fns SF in preparation for sym_read(). It is | |
318 | called every time we read a symbol file for any reason. */ | |
c906108c | 319 | |
3a6c3343 | 320 | void (*sym_init) (struct objfile *); |
c906108c | 321 | |
f4352531 | 322 | /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab |
3a6c3343 | 323 | (or possibly a symtab). OBJFILE is the objfile struct for the |
f4352531 TG |
324 | file we are reading. SYMFILE_FLAGS are the flags passed to |
325 | symbol_file_add & co. */ | |
c906108c | 326 | |
3a6c3343 | 327 | void (*sym_read) (struct objfile *, int); |
c906108c | 328 | |
3e03848b JK |
329 | /* Read the partial symbols for an objfile. This may be NULL, in which case |
330 | gdb has to check other ways if this objfile has any symbols. This may | |
331 | only be non-NULL if the objfile actually does have debuginfo available. | |
332 | */ | |
b11896a5 TT |
333 | |
334 | void (*sym_read_psymbols) (struct objfile *); | |
335 | ||
3a6c3343 AC |
336 | /* Called when we are finished with an objfile. Should do all |
337 | cleanup that is specific to the object file format for the | |
338 | particular objfile. */ | |
c906108c | 339 | |
3a6c3343 | 340 | void (*sym_finish) (struct objfile *); |
c906108c | 341 | |
3a6c3343 AC |
342 | /* This function produces a file-dependent section_offsets |
343 | structure, allocated in the objfile's storage, and based on the | |
344 | parameter. The parameter is currently a CORE_ADDR (FIXME!) for | |
345 | backward compatibility with the higher levels of GDB. It should | |
346 | probably be changed to a string, where NULL means the default, | |
347 | and others are parsed in a file dependent way. */ | |
c906108c | 348 | |
3a6c3343 | 349 | void (*sym_offsets) (struct objfile *, struct section_addr_info *); |
c906108c | 350 | |
31d99776 DJ |
351 | /* This function produces a format-independent description of |
352 | the segments of ABFD. Each segment is a unit of the file | |
353 | which may be relocated independently. */ | |
354 | ||
355 | struct symfile_segment_data *(*sym_segments) (bfd *abfd); | |
356 | ||
c295b2e5 JB |
357 | /* This function should read the linetable from the objfile when |
358 | the line table cannot be read while processing the debugging | |
359 | information. */ | |
ac8035ab | 360 | |
c295b2e5 JB |
361 | void (*sym_read_linetable) (void); |
362 | ||
ac8035ab TG |
363 | /* Relocate the contents of a debug section SECTP. The |
364 | contents are stored in BUF if it is non-NULL, or returned in a | |
365 | malloc'd buffer otherwise. */ | |
366 | ||
367 | bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf); | |
368 | ||
ccefe4c4 TT |
369 | /* The "quick" (aka partial) symbol functions for this symbol |
370 | reader. */ | |
371 | const struct quick_symbol_functions *qf; | |
3a6c3343 | 372 | }; |
c906108c | 373 | |
567995e1 | 374 | extern struct section_addr_info * |
3e43a32a | 375 | build_section_addr_info_from_objfile (const struct objfile *objfile); |
567995e1 | 376 | |
75242ef4 JK |
377 | extern void relative_addr_info_to_section_offsets |
378 | (struct section_offsets *section_offsets, int num_sections, | |
379 | struct section_addr_info *addrs); | |
380 | ||
381 | extern void addr_info_make_relative (struct section_addr_info *addrs, | |
382 | bfd *abfd); | |
383 | ||
c906108c SS |
384 | /* The default version of sym_fns.sym_offsets for readers that don't |
385 | do anything special. */ | |
386 | ||
570b8f7c AC |
387 | extern void default_symfile_offsets (struct objfile *objfile, |
388 | struct section_addr_info *); | |
c906108c | 389 | |
31d99776 DJ |
390 | /* The default version of sym_fns.sym_segments for readers that don't |
391 | do anything special. */ | |
392 | ||
393 | extern struct symfile_segment_data *default_symfile_segments (bfd *abfd); | |
c906108c | 394 | |
ac8035ab TG |
395 | /* The default version of sym_fns.sym_relocate for readers that don't |
396 | do anything special. */ | |
397 | ||
398 | extern bfd_byte *default_symfile_relocate (struct objfile *objfile, | |
399 | asection *sectp, bfd_byte *buf); | |
400 | ||
72b9f47f | 401 | extern struct symtab *allocate_symtab (const char *, struct objfile *); |
c906108c | 402 | |
00b5771c | 403 | extern void add_symtab_fns (const struct sym_fns *); |
c906108c | 404 | |
7eedccfa PP |
405 | /* This enum encodes bit-flags passed as ADD_FLAGS parameter to |
406 | syms_from_objfile, symbol_file_add, etc. */ | |
407 | ||
408 | enum symfile_add_flags | |
409 | { | |
410 | /* Be chatty about what you are doing. */ | |
411 | SYMFILE_VERBOSE = 1 << 1, | |
412 | ||
413 | /* This is the main symbol file (as opposed to symbol file for dynamically | |
414 | loaded code). */ | |
415 | SYMFILE_MAINLINE = 1 << 2, | |
416 | ||
417 | /* Do not call breakpoint_re_set when adding this symbol file. */ | |
b11896a5 TT |
418 | SYMFILE_DEFER_BP_RESET = 1 << 3, |
419 | ||
420 | /* Do not immediately read symbols for this file. By default, | |
421 | symbols are read when the objfile is created. */ | |
422 | SYMFILE_NO_READ = 1 << 4 | |
7eedccfa PP |
423 | }; |
424 | ||
7e8580c1 | 425 | extern void syms_from_objfile (struct objfile *, |
3a6c3343 | 426 | struct section_addr_info *, |
7eedccfa | 427 | struct section_offsets *, int, int); |
c906108c | 428 | |
7eedccfa | 429 | extern void new_symfile_objfile (struct objfile *, int); |
c906108c | 430 | |
a14ed312 | 431 | extern struct objfile *symbol_file_add (char *, int, |
7eedccfa | 432 | struct section_addr_info *, int); |
62557bbc | 433 | |
eb4556d7 JB |
434 | extern struct objfile *symbol_file_add_from_bfd (bfd *, int, |
435 | struct section_addr_info *, | |
63524580 | 436 | int, struct objfile *parent); |
eb4556d7 | 437 | |
15d123c9 | 438 | extern void symbol_file_add_separate (bfd *, int, struct objfile *); |
9cce227f | 439 | |
15d123c9 | 440 | extern char *find_separate_debug_file_by_debuglink (struct objfile *); |
9cce227f | 441 | |
a39a16c4 MM |
442 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
443 | ||
3a6c3343 AC |
444 | extern struct section_addr_info *alloc_section_addr_info (size_t |
445 | num_sections); | |
a39a16c4 | 446 | |
3a6c3343 AC |
447 | /* Build (allocate and populate) a section_addr_info struct from an |
448 | existing section table. */ | |
62557bbc | 449 | |
3a6c3343 | 450 | extern struct section_addr_info |
0542c86d | 451 | *build_section_addr_info_from_section_table (const struct target_section |
3a6c3343 | 452 | *start, |
0542c86d | 453 | const struct target_section |
3a6c3343 | 454 | *end); |
62557bbc | 455 | |
3a6c3343 AC |
456 | /* Free all memory allocated by |
457 | build_section_addr_info_from_section_table. */ | |
62557bbc | 458 | |
570b8f7c | 459 | extern void free_section_addr_info (struct section_addr_info *); |
62557bbc KB |
460 | |
461 | ||
3a6c3343 AC |
462 | /* Make a copy of the string at PTR with SIZE characters in the symbol |
463 | obstack (and add a null character at the end in the copy). Returns | |
464 | the address of the copy. */ | |
c906108c | 465 | |
63ca651f | 466 | extern char *obsavestring (const char *, int, struct obstack *); |
c906108c | 467 | |
3e43a32a MS |
468 | /* Concatenate NULL terminated variable argument list of `const char |
469 | *' strings; return the new string. Space is found in the OBSTACKP. | |
470 | Argument list must be terminated by a sentinel expression `(char *) | |
471 | NULL'. */ | |
c906108c | 472 | |
48cb83fd | 473 | extern char *obconcat (struct obstack *obstackp, ...) ATTRIBUTE_SENTINEL; |
c906108c SS |
474 | |
475 | /* Variables */ | |
476 | ||
b7209cb4 FF |
477 | /* If non-zero, shared library symbols will be added automatically |
478 | when the inferior is created, new libraries are loaded, or when | |
479 | attaching to the inferior. This is almost always what users will | |
480 | want to have happen; but for very large programs, the startup time | |
481 | will be excessive, and so if this is a problem, the user can clear | |
482 | this flag and then add the shared library symbols as needed. Note | |
483 | that there is a potential for confusion, since if the shared | |
484 | library symbols are not loaded, commands like "info fun" will *not* | |
3a6c3343 | 485 | report all the functions that are actually present. */ |
c906108c | 486 | |
b7209cb4 | 487 | extern int auto_solib_add; |
c906108c | 488 | |
c906108c SS |
489 | /* From symfile.c */ |
490 | ||
8b60591b JB |
491 | extern void set_initial_language (void); |
492 | ||
4efb68b1 | 493 | extern void find_lowest_section (bfd *, asection *, void *); |
c906108c | 494 | |
a14ed312 | 495 | extern bfd *symfile_bfd_open (char *); |
c906108c | 496 | |
874f5765 TG |
497 | extern bfd *bfd_open_maybe_remote (const char *); |
498 | ||
e2f6d8e5 JB |
499 | extern int get_section_index (struct objfile *, char *); |
500 | ||
c906108c | 501 | /* Utility functions for overlay sections: */ |
3a6c3343 AC |
502 | extern enum overlay_debugging_state |
503 | { | |
504 | ovly_off, | |
505 | ovly_on, | |
d874f1e2 MS |
506 | ovly_auto |
507 | } overlay_debugging; | |
c906108c SS |
508 | extern int overlay_cache_invalid; |
509 | ||
3a6c3343 | 510 | /* Return the "mapped" overlay section containing the PC. */ |
714835d5 | 511 | extern struct obj_section *find_pc_mapped_section (CORE_ADDR); |
c906108c | 512 | |
3a6c3343 AC |
513 | /* Return any overlay section containing the PC (even in its LMA |
514 | region). */ | |
714835d5 | 515 | extern struct obj_section *find_pc_overlay (CORE_ADDR); |
c906108c | 516 | |
3a6c3343 | 517 | /* Return true if the section is an overlay. */ |
714835d5 | 518 | extern int section_is_overlay (struct obj_section *); |
c906108c | 519 | |
3a6c3343 | 520 | /* Return true if the overlay section is currently "mapped". */ |
714835d5 | 521 | extern int section_is_mapped (struct obj_section *); |
c906108c | 522 | |
3a6c3343 | 523 | /* Return true if pc belongs to section's VMA. */ |
714835d5 | 524 | extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 525 | |
3a6c3343 | 526 | /* Return true if pc belongs to section's LMA. */ |
714835d5 | 527 | extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 528 | |
3a6c3343 | 529 | /* Map an address from a section's LMA to its VMA. */ |
714835d5 | 530 | extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 531 | |
3a6c3343 | 532 | /* Map an address from a section's VMA to its LMA. */ |
714835d5 | 533 | extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 534 | |
3a6c3343 | 535 | /* Convert an address in an overlay section (force into VMA range). */ |
714835d5 | 536 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
c906108c | 537 | |
3a6c3343 | 538 | /* Load symbols from a file. */ |
1adeb98a FN |
539 | extern void symbol_file_add_main (char *args, int from_tty); |
540 | ||
3a6c3343 | 541 | /* Clear GDB symbol tables. */ |
1adeb98a FN |
542 | extern void symbol_file_clear (int from_tty); |
543 | ||
1c772458 UW |
544 | /* Default overlay update function. */ |
545 | extern void simple_overlay_update (struct obj_section *); | |
546 | ||
ac8035ab TG |
547 | extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, |
548 | bfd_byte *); | |
086df311 | 549 | |
31d99776 DJ |
550 | extern int symfile_map_offsets_to_segments (bfd *, |
551 | struct symfile_segment_data *, | |
552 | struct section_offsets *, | |
553 | int, const CORE_ADDR *); | |
554 | struct symfile_segment_data *get_symfile_segment_data (bfd *abfd); | |
555 | void free_symfile_segment_data (struct symfile_segment_data *data); | |
556 | ||
ccefe4c4 TT |
557 | extern struct cleanup *increment_reading_symtab (void); |
558 | ||
c906108c SS |
559 | /* From dwarf2read.c */ |
560 | ||
251d32d9 TG |
561 | /* Names for a dwarf2 debugging section. The field NORMAL is the normal |
562 | section name (usually from the DWARF standard), while the field COMPRESSED | |
563 | is the name of compressed sections. If your object file format doesn't | |
564 | support compressed sections, the field COMPRESSED can be NULL. Likewise, | |
565 | the debugging section is not supported, the field NORMAL can be NULL too. | |
566 | It doesn't make sense to have a NULL NORMAL field but a non-NULL COMPRESSED | |
567 | field. */ | |
568 | ||
569 | struct dwarf2_section_names { | |
570 | const char *normal; | |
571 | const char *compressed; | |
572 | }; | |
573 | ||
574 | /* List of names for dward2 debugging sections. Also most object file formats | |
575 | use the standardized (ie ELF) names, some (eg XCOFF) have customized names | |
576 | due to restrictions. | |
577 | The table for the standard names is defined in dwarf2read.c. Please | |
578 | update all instances of dwarf2_debug_sections if you add a field to this | |
579 | structure. It is always safe to use { NULL, NULL } in this case. */ | |
580 | ||
581 | struct dwarf2_debug_sections { | |
582 | struct dwarf2_section_names info; | |
583 | struct dwarf2_section_names abbrev; | |
584 | struct dwarf2_section_names line; | |
585 | struct dwarf2_section_names loc; | |
586 | struct dwarf2_section_names macinfo; | |
cf2c3c16 | 587 | struct dwarf2_section_names macro; |
251d32d9 TG |
588 | struct dwarf2_section_names str; |
589 | struct dwarf2_section_names ranges; | |
590 | struct dwarf2_section_names types; | |
591 | struct dwarf2_section_names frame; | |
592 | struct dwarf2_section_names eh_frame; | |
593 | struct dwarf2_section_names gdb_index; | |
24d3216f TT |
594 | /* This field has no meaning, but exists solely to catch changes to |
595 | this structure which are not reflected in some instance. */ | |
596 | int sentinel; | |
251d32d9 TG |
597 | }; |
598 | ||
599 | extern int dwarf2_has_info (struct objfile *, | |
600 | const struct dwarf2_debug_sections *); | |
c906108c | 601 | |
3017a003 TG |
602 | /* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */ |
603 | enum dwarf2_section_enum { | |
604 | DWARF2_DEBUG_FRAME, | |
605 | DWARF2_EH_FRAME | |
606 | }; | |
607 | ||
608 | extern void dwarf2_get_section_info (struct objfile *, | |
609 | enum dwarf2_section_enum, | |
610 | asection **, gdb_byte **, | |
611 | bfd_size_type *); | |
612 | ||
9291a0cd | 613 | extern int dwarf2_initialize_objfile (struct objfile *); |
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 | ||
621 | /* Hack to force structures to exist before use in parameter list. */ | |
622 | struct ecoff_debug_hack | |
3a6c3343 AC |
623 | { |
624 | struct ecoff_debug_swap *a; | |
625 | struct ecoff_debug_info *b; | |
626 | }; | |
627 | ||
628 | extern void mdebug_build_psymtabs (struct objfile *, | |
629 | const struct ecoff_debug_swap *, | |
630 | struct ecoff_debug_info *); | |
631 | ||
632 | extern void elfmdebug_build_psymtabs (struct objfile *, | |
633 | const struct ecoff_debug_swap *, | |
634 | asection *); | |
c906108c | 635 | |
c5aa993b | 636 | #endif /* !defined(SYMFILE_H) */ |