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c906108c | 1 | /* Definitions for reading symbol files into GDB. |
3a6c3343 | 2 | |
0b302171 | 3 | Copyright (C) 1990-2004, 2007-2012 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" |
c906108c | 25 | |
63ca651f | 26 | /* Opaque declarations. */ |
0542c86d | 27 | struct target_section; |
da3331ec | 28 | struct objfile; |
1c772458 | 29 | struct obj_section; |
63ca651f | 30 | struct obstack; |
fe898f56 | 31 | struct block; |
63ca651f | 32 | |
2edb89d3 JK |
33 | /* Comparison function for symbol look ups. */ |
34 | ||
35 | typedef int (symbol_compare_ftype) (const char *string1, | |
36 | const char *string2); | |
37 | ||
3a6c3343 AC |
38 | /* Partial symbols are stored in the psymbol_cache and pointers to |
39 | them are kept in a dynamically grown array that is obtained from | |
40 | malloc and grown as necessary via realloc. Each objfile typically | |
41 | has two of these, one for global symbols and one for static | |
42 | symbols. Although this adds a level of indirection for storing or | |
43 | accessing the partial symbols, it allows us to throw away duplicate | |
44 | psymbols and set all pointers to the single saved instance. */ | |
c906108c | 45 | |
c5aa993b | 46 | struct psymbol_allocation_list |
3a6c3343 | 47 | { |
c906108c | 48 | |
3a6c3343 AC |
49 | /* Pointer to beginning of dynamically allocated array of pointers |
50 | to partial symbols. The array is dynamically expanded as | |
51 | necessary to accommodate more pointers. */ | |
c906108c | 52 | |
3a6c3343 | 53 | struct partial_symbol **list; |
c906108c | 54 | |
3a6c3343 AC |
55 | /* Pointer to next available slot in which to store a pointer to a |
56 | partial symbol. */ | |
c906108c | 57 | |
3a6c3343 | 58 | struct partial_symbol **next; |
c906108c | 59 | |
3a6c3343 AC |
60 | /* Number of allocated pointer slots in current dynamic array (not |
61 | the number of bytes of storage). The "next" pointer will always | |
62 | point somewhere between list[0] and list[size], and when at | |
63 | list[size] the array will be expanded on the next attempt to | |
64 | store a pointer. */ | |
c906108c | 65 | |
3a6c3343 AC |
66 | int size; |
67 | }; | |
c906108c | 68 | |
62557bbc KB |
69 | /* Define an array of addresses to accommodate non-contiguous dynamic |
70 | loading of modules. This is for use when entering commands, so we | |
3a6c3343 AC |
71 | can keep track of the section names until we read the file and can |
72 | map them to bfd sections. This structure is also used by solib.c | |
73 | to communicate the section addresses in shared objects to | |
74 | symbol_file_add (). */ | |
75 | ||
76 | struct section_addr_info | |
62557bbc | 77 | { |
a39a16c4 MM |
78 | /* The number of sections for which address information is |
79 | available. */ | |
80 | size_t num_sections; | |
c378eb4e | 81 | /* Sections whose names are file format dependent. */ |
62557bbc KB |
82 | struct other_sections |
83 | { | |
84 | CORE_ADDR addr; | |
85 | char *name; | |
672d9c23 | 86 | |
5488dafb | 87 | /* SECTINDEX must be valid for associated BFD or set to -1. */ |
62557bbc | 88 | int sectindex; |
a39a16c4 | 89 | } other[1]; |
62557bbc KB |
90 | }; |
91 | ||
28c32713 JB |
92 | |
93 | /* A table listing the load segments in a symfile, and which segment | |
94 | each BFD section belongs to. */ | |
31d99776 DJ |
95 | struct symfile_segment_data |
96 | { | |
97 | /* How many segments are present in this file. If there are | |
98 | two, the text segment is the first one and the data segment | |
99 | is the second one. */ | |
100 | int num_segments; | |
101 | ||
102 | /* If NUM_SEGMENTS is greater than zero, the original base address | |
103 | of each segment. */ | |
104 | CORE_ADDR *segment_bases; | |
105 | ||
106 | /* If NUM_SEGMENTS is greater than zero, the memory size of each | |
107 | segment. */ | |
108 | CORE_ADDR *segment_sizes; | |
109 | ||
110 | /* If NUM_SEGMENTS is greater than zero, this is an array of entries | |
28c32713 JB |
111 | recording which segment contains each BFD section. |
112 | SEGMENT_INFO[I] is S+1 if the I'th BFD section belongs to segment | |
113 | S, or zero if it is not in any segment. */ | |
31d99776 DJ |
114 | int *segment_info; |
115 | }; | |
116 | ||
44b13c5a JK |
117 | /* Callback for quick_symbol_functions->map_symbol_filenames. */ |
118 | ||
119 | typedef void (symbol_filename_ftype) (const char *filename, | |
120 | const char *fullname, void *data); | |
121 | ||
ccefe4c4 TT |
122 | /* The "quick" symbol functions exist so that symbol readers can |
123 | avoiding an initial read of all the symbols. For example, symbol | |
124 | readers might choose to use the "partial symbol table" utilities, | |
125 | which is one implementation of the quick symbol functions. | |
126 | ||
127 | The quick symbol functions are generally opaque: the underlying | |
128 | representation is hidden from the caller. | |
129 | ||
130 | In general, these functions should only look at whatever special | |
131 | index the symbol reader creates -- looking through the symbol | |
132 | tables themselves is handled by generic code. If a function is | |
133 | defined as returning a "symbol table", this means that the function | |
134 | should only return a newly-created symbol table; it should not | |
135 | examine pre-existing ones. | |
136 | ||
137 | The exact list of functions here was determined in an ad hoc way | |
138 | based on gdb's history. */ | |
139 | ||
140 | struct quick_symbol_functions | |
141 | { | |
142 | /* Return true if this objfile has any "partial" symbols | |
143 | available. */ | |
144 | int (*has_symbols) (struct objfile *objfile); | |
145 | ||
146 | /* Return the symbol table for the "last" file appearing in | |
147 | OBJFILE. */ | |
148 | struct symtab *(*find_last_source_symtab) (struct objfile *objfile); | |
149 | ||
150 | /* Forget all cached full file names for OBJFILE. */ | |
151 | void (*forget_cached_source_info) (struct objfile *objfile); | |
152 | ||
f8eba3c6 TT |
153 | /* Expand and iterate over each "partial" symbol table in OBJFILE |
154 | where the source file is named NAME. | |
155 | ||
4aac40c8 | 156 | If NAME is not absolute, a match after a '/' in the symbol |
f8eba3c6 TT |
157 | table's file name will also work. FULL_PATH is the absolute file |
158 | name, and REAL_PATH is the same, run through gdb_realpath. | |
159 | ||
160 | If a match is found, the "partial" symbol table is expanded. | |
161 | Then, this calls iterate_over_some_symtabs (or equivalent) over | |
162 | all newly-created symbol tables, passing CALLBACK and DATA to it. | |
163 | The result of this call is returned. */ | |
164 | int (*map_symtabs_matching_filename) (struct objfile *objfile, | |
165 | const char *name, | |
166 | const char *full_path, | |
167 | const char *real_path, | |
168 | int (*callback) (struct symtab *, | |
169 | void *), | |
170 | void *data); | |
ccefe4c4 TT |
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 | |
265e52c3 | 231 | CALLBACK, reading in partial 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. | |
1e3a8f45 JB |
235 | MATCH must be weaker than strcmp_iw_ordered in the sense that |
236 | strcmp_iw_ordered(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE, | |
237 | if non-null, must be an ordering relation compatible with | |
238 | strcmp_iw_ordered in the sense that | |
239 | strcmp_iw_ordered(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0 | |
40658b94 | 240 | and |
1e3a8f45 JB |
241 | strcmp_iw_ordered(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0 |
242 | (allowing strcmp_iw_ordered(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 | ||
f8eba3c6 TT |
262 | If even KIND matches, then NAME_MATCHER is called for each symbol |
263 | defined in the file. The current language, the symbol name and | |
bb2f58dc JB |
264 | DATA are passed to NAME_MATCHER. The symbol "search" name should |
265 | be passed to NAME_MATCHER (see la_symbol_name_compare in struct | |
266 | language_defn for more details on this). | |
ccefe4c4 TT |
267 | |
268 | If NAME_MATCHER returns zero, then this symbol is skipped. | |
269 | ||
7b08b9eb JK |
270 | Otherwise, this symbol's symbol table is expanded. |
271 | ||
ccefe4c4 TT |
272 | DATA is user data that is passed unmodified to the callback |
273 | functions. */ | |
f8eba3c6 TT |
274 | void (*expand_symtabs_matching) |
275 | (struct objfile *objfile, | |
276 | int (*file_matcher) (const char *, void *), | |
277 | int (*name_matcher) (const struct language_defn *, const char *, void *), | |
278 | enum search_domain kind, | |
279 | void *data); | |
ccefe4c4 TT |
280 | |
281 | /* Return the symbol table from OBJFILE that contains PC and | |
282 | SECTION. Return NULL if there is no such symbol table. This | |
283 | should return the symbol table that contains a symbol whose | |
284 | address exactly matches PC, or, if there is no exact match, the | |
285 | symbol table that contains a symbol whose address is closest to | |
286 | PC. */ | |
287 | struct symtab *(*find_pc_sect_symtab) (struct objfile *objfile, | |
288 | struct minimal_symbol *msymbol, | |
289 | CORE_ADDR pc, | |
290 | struct obj_section *section, | |
291 | int warn_if_readin); | |
292 | ||
ad727bb2 | 293 | /* Call a callback for every file defined in OBJFILE whose symtab is |
44b13c5a | 294 | not already read in. FUN is the callback. It is passed the file's |
74e2f255 DE |
295 | FILENAME, the file's FULLNAME (if need_fullname is non-zero), and |
296 | the DATA passed to this function. */ | |
ccefe4c4 | 297 | void (*map_symbol_filenames) (struct objfile *objfile, |
74e2f255 DE |
298 | symbol_filename_ftype *fun, void *data, |
299 | int need_fullname); | |
ccefe4c4 TT |
300 | }; |
301 | ||
c906108c SS |
302 | /* Structure to keep track of symbol reading functions for various |
303 | object file types. */ | |
304 | ||
c5aa993b | 305 | struct sym_fns |
3a6c3343 | 306 | { |
c906108c | 307 | |
3a6c3343 AC |
308 | /* BFD flavour that we handle, or (as a special kludge, see |
309 | xcoffread.c, (enum bfd_flavour)-1 for xcoff). */ | |
c906108c | 310 | |
3a6c3343 | 311 | enum bfd_flavour sym_flavour; |
c906108c | 312 | |
3a6c3343 AC |
313 | /* Initializes anything that is global to the entire symbol table. |
314 | It is called during symbol_file_add, when we begin debugging an | |
315 | entirely new program. */ | |
c906108c | 316 | |
3a6c3343 | 317 | void (*sym_new_init) (struct objfile *); |
c906108c | 318 | |
3a6c3343 AC |
319 | /* Reads any initial information from a symbol file, and initializes |
320 | the struct sym_fns SF in preparation for sym_read(). It is | |
321 | called every time we read a symbol file for any reason. */ | |
c906108c | 322 | |
3a6c3343 | 323 | void (*sym_init) (struct objfile *); |
c906108c | 324 | |
f4352531 | 325 | /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab |
3a6c3343 | 326 | (or possibly a symtab). OBJFILE is the objfile struct for the |
f4352531 TG |
327 | file we are reading. SYMFILE_FLAGS are the flags passed to |
328 | symbol_file_add & co. */ | |
c906108c | 329 | |
3a6c3343 | 330 | void (*sym_read) (struct objfile *, int); |
c906108c | 331 | |
3e03848b JK |
332 | /* Read the partial symbols for an objfile. This may be NULL, in which case |
333 | gdb has to check other ways if this objfile has any symbols. This may | |
334 | only be non-NULL if the objfile actually does have debuginfo available. | |
335 | */ | |
b11896a5 TT |
336 | |
337 | void (*sym_read_psymbols) (struct objfile *); | |
338 | ||
3a6c3343 AC |
339 | /* Called when we are finished with an objfile. Should do all |
340 | cleanup that is specific to the object file format for the | |
341 | particular objfile. */ | |
c906108c | 342 | |
3a6c3343 | 343 | void (*sym_finish) (struct objfile *); |
c906108c | 344 | |
3a6c3343 AC |
345 | /* This function produces a file-dependent section_offsets |
346 | structure, allocated in the objfile's storage, and based on the | |
347 | parameter. The parameter is currently a CORE_ADDR (FIXME!) for | |
348 | backward compatibility with the higher levels of GDB. It should | |
349 | probably be changed to a string, where NULL means the default, | |
350 | and others are parsed in a file dependent way. */ | |
c906108c | 351 | |
3a6c3343 | 352 | void (*sym_offsets) (struct objfile *, struct section_addr_info *); |
c906108c | 353 | |
31d99776 DJ |
354 | /* This function produces a format-independent description of |
355 | the segments of ABFD. Each segment is a unit of the file | |
356 | which may be relocated independently. */ | |
357 | ||
358 | struct symfile_segment_data *(*sym_segments) (bfd *abfd); | |
359 | ||
c295b2e5 JB |
360 | /* This function should read the linetable from the objfile when |
361 | the line table cannot be read while processing the debugging | |
362 | information. */ | |
ac8035ab | 363 | |
c295b2e5 JB |
364 | void (*sym_read_linetable) (void); |
365 | ||
ac8035ab TG |
366 | /* Relocate the contents of a debug section SECTP. The |
367 | contents are stored in BUF if it is non-NULL, or returned in a | |
368 | malloc'd buffer otherwise. */ | |
369 | ||
370 | bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf); | |
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 | |
567995e1 | 377 | extern struct 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, | |
382 | struct section_addr_info *addrs); | |
383 | ||
384 | extern void addr_info_make_relative (struct section_addr_info *addrs, | |
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 AC |
390 | extern void default_symfile_offsets (struct objfile *objfile, |
391 | struct 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 | ||
72b9f47f | 404 | extern struct symtab *allocate_symtab (const char *, struct objfile *); |
c906108c | 405 | |
00b5771c | 406 | extern void add_symtab_fns (const struct sym_fns *); |
c906108c | 407 | |
7eedccfa PP |
408 | /* This enum encodes bit-flags passed as ADD_FLAGS parameter to |
409 | syms_from_objfile, symbol_file_add, etc. */ | |
410 | ||
411 | enum symfile_add_flags | |
412 | { | |
413 | /* Be chatty about what you are doing. */ | |
414 | SYMFILE_VERBOSE = 1 << 1, | |
415 | ||
416 | /* This is the main symbol file (as opposed to symbol file for dynamically | |
417 | loaded code). */ | |
418 | SYMFILE_MAINLINE = 1 << 2, | |
419 | ||
420 | /* Do not call breakpoint_re_set when adding this symbol file. */ | |
b11896a5 TT |
421 | SYMFILE_DEFER_BP_RESET = 1 << 3, |
422 | ||
423 | /* Do not immediately read symbols for this file. By default, | |
424 | symbols are read when the objfile is created. */ | |
425 | SYMFILE_NO_READ = 1 << 4 | |
7eedccfa PP |
426 | }; |
427 | ||
7e8580c1 | 428 | extern void syms_from_objfile (struct objfile *, |
3a6c3343 | 429 | struct section_addr_info *, |
7eedccfa | 430 | struct section_offsets *, int, int); |
c906108c | 431 | |
7eedccfa | 432 | extern void new_symfile_objfile (struct objfile *, int); |
c906108c | 433 | |
a14ed312 | 434 | extern struct objfile *symbol_file_add (char *, int, |
7eedccfa | 435 | struct section_addr_info *, int); |
62557bbc | 436 | |
eb4556d7 JB |
437 | extern struct objfile *symbol_file_add_from_bfd (bfd *, int, |
438 | struct section_addr_info *, | |
63524580 | 439 | int, struct objfile *parent); |
eb4556d7 | 440 | |
15d123c9 | 441 | extern void symbol_file_add_separate (bfd *, int, struct objfile *); |
9cce227f | 442 | |
15d123c9 | 443 | extern char *find_separate_debug_file_by_debuglink (struct objfile *); |
9cce227f | 444 | |
a39a16c4 MM |
445 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
446 | ||
3a6c3343 AC |
447 | extern struct section_addr_info *alloc_section_addr_info (size_t |
448 | num_sections); | |
a39a16c4 | 449 | |
3a6c3343 AC |
450 | /* Build (allocate and populate) a section_addr_info struct from an |
451 | existing section table. */ | |
62557bbc | 452 | |
3a6c3343 | 453 | extern struct section_addr_info |
0542c86d | 454 | *build_section_addr_info_from_section_table (const struct target_section |
3a6c3343 | 455 | *start, |
0542c86d | 456 | const struct target_section |
3a6c3343 | 457 | *end); |
62557bbc | 458 | |
3a6c3343 AC |
459 | /* Free all memory allocated by |
460 | build_section_addr_info_from_section_table. */ | |
62557bbc | 461 | |
570b8f7c | 462 | extern void free_section_addr_info (struct section_addr_info *); |
62557bbc KB |
463 | |
464 | ||
3a6c3343 AC |
465 | /* Make a copy of the string at PTR with SIZE characters in the symbol |
466 | obstack (and add a null character at the end in the copy). Returns | |
467 | the address of the copy. */ | |
c906108c | 468 | |
63ca651f | 469 | extern char *obsavestring (const char *, int, struct obstack *); |
c906108c | 470 | |
3e43a32a MS |
471 | /* Concatenate NULL terminated variable argument list of `const char |
472 | *' strings; return the new string. Space is found in the OBSTACKP. | |
473 | Argument list must be terminated by a sentinel expression `(char *) | |
474 | NULL'. */ | |
c906108c | 475 | |
48cb83fd | 476 | extern char *obconcat (struct obstack *obstackp, ...) ATTRIBUTE_SENTINEL; |
c906108c SS |
477 | |
478 | /* Variables */ | |
479 | ||
b7209cb4 FF |
480 | /* If non-zero, shared library symbols will be added automatically |
481 | when the inferior is created, new libraries are loaded, or when | |
482 | attaching to the inferior. This is almost always what users will | |
483 | want to have happen; but for very large programs, the startup time | |
484 | will be excessive, and so if this is a problem, the user can clear | |
485 | this flag and then add the shared library symbols as needed. Note | |
486 | that there is a potential for confusion, since if the shared | |
487 | library symbols are not loaded, commands like "info fun" will *not* | |
3a6c3343 | 488 | report all the functions that are actually present. */ |
c906108c | 489 | |
b7209cb4 | 490 | extern int auto_solib_add; |
c906108c | 491 | |
c906108c SS |
492 | /* From symfile.c */ |
493 | ||
8b60591b JB |
494 | extern void set_initial_language (void); |
495 | ||
4efb68b1 | 496 | extern void find_lowest_section (bfd *, asection *, void *); |
c906108c | 497 | |
a14ed312 | 498 | extern bfd *symfile_bfd_open (char *); |
c906108c | 499 | |
874f5765 TG |
500 | extern bfd *bfd_open_maybe_remote (const char *); |
501 | ||
e2f6d8e5 JB |
502 | extern int get_section_index (struct objfile *, char *); |
503 | ||
c906108c | 504 | /* Utility functions for overlay sections: */ |
3a6c3343 AC |
505 | extern enum overlay_debugging_state |
506 | { | |
507 | ovly_off, | |
508 | ovly_on, | |
d874f1e2 MS |
509 | ovly_auto |
510 | } overlay_debugging; | |
c906108c SS |
511 | extern int overlay_cache_invalid; |
512 | ||
3a6c3343 | 513 | /* Return the "mapped" overlay section containing the PC. */ |
714835d5 | 514 | extern struct obj_section *find_pc_mapped_section (CORE_ADDR); |
c906108c | 515 | |
3a6c3343 AC |
516 | /* Return any overlay section containing the PC (even in its LMA |
517 | region). */ | |
714835d5 | 518 | extern struct obj_section *find_pc_overlay (CORE_ADDR); |
c906108c | 519 | |
3a6c3343 | 520 | /* Return true if the section is an overlay. */ |
714835d5 | 521 | extern int section_is_overlay (struct obj_section *); |
c906108c | 522 | |
3a6c3343 | 523 | /* Return true if the overlay section is currently "mapped". */ |
714835d5 | 524 | extern int section_is_mapped (struct obj_section *); |
c906108c | 525 | |
3a6c3343 | 526 | /* Return true if pc belongs to section's VMA. */ |
714835d5 | 527 | extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 528 | |
3a6c3343 | 529 | /* Return true if pc belongs to section's LMA. */ |
714835d5 | 530 | extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 531 | |
3a6c3343 | 532 | /* Map an address from a section's LMA to its VMA. */ |
714835d5 | 533 | extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 534 | |
3a6c3343 | 535 | /* Map an address from a section's VMA to its LMA. */ |
714835d5 | 536 | extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 537 | |
3a6c3343 | 538 | /* Convert an address in an overlay section (force into VMA range). */ |
714835d5 | 539 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
c906108c | 540 | |
3a6c3343 | 541 | /* Load symbols from a file. */ |
1adeb98a FN |
542 | extern void symbol_file_add_main (char *args, int from_tty); |
543 | ||
3a6c3343 | 544 | /* Clear GDB symbol tables. */ |
1adeb98a FN |
545 | extern void symbol_file_clear (int from_tty); |
546 | ||
1c772458 UW |
547 | /* Default overlay update function. */ |
548 | extern void simple_overlay_update (struct obj_section *); | |
549 | ||
ac8035ab TG |
550 | extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, |
551 | bfd_byte *); | |
086df311 | 552 | |
31d99776 DJ |
553 | extern int symfile_map_offsets_to_segments (bfd *, |
554 | struct symfile_segment_data *, | |
555 | struct section_offsets *, | |
556 | int, const CORE_ADDR *); | |
557 | struct symfile_segment_data *get_symfile_segment_data (bfd *abfd); | |
558 | void free_symfile_segment_data (struct symfile_segment_data *data); | |
559 | ||
ccefe4c4 TT |
560 | extern struct cleanup *increment_reading_symtab (void); |
561 | ||
c906108c SS |
562 | /* From dwarf2read.c */ |
563 | ||
251d32d9 TG |
564 | /* Names for a dwarf2 debugging section. The field NORMAL is the normal |
565 | section name (usually from the DWARF standard), while the field COMPRESSED | |
566 | is the name of compressed sections. If your object file format doesn't | |
567 | support compressed sections, the field COMPRESSED can be NULL. Likewise, | |
568 | the debugging section is not supported, the field NORMAL can be NULL too. | |
569 | It doesn't make sense to have a NULL NORMAL field but a non-NULL COMPRESSED | |
570 | field. */ | |
571 | ||
572 | struct dwarf2_section_names { | |
573 | const char *normal; | |
574 | const char *compressed; | |
575 | }; | |
576 | ||
577 | /* List of names for dward2 debugging sections. Also most object file formats | |
578 | use the standardized (ie ELF) names, some (eg XCOFF) have customized names | |
579 | due to restrictions. | |
580 | The table for the standard names is defined in dwarf2read.c. Please | |
581 | update all instances of dwarf2_debug_sections if you add a field to this | |
582 | structure. It is always safe to use { NULL, NULL } in this case. */ | |
583 | ||
584 | struct dwarf2_debug_sections { | |
585 | struct dwarf2_section_names info; | |
586 | struct dwarf2_section_names abbrev; | |
587 | struct dwarf2_section_names line; | |
588 | struct dwarf2_section_names loc; | |
589 | struct dwarf2_section_names macinfo; | |
cf2c3c16 | 590 | struct dwarf2_section_names macro; |
251d32d9 TG |
591 | struct dwarf2_section_names str; |
592 | struct dwarf2_section_names ranges; | |
593 | struct dwarf2_section_names types; | |
594 | struct dwarf2_section_names frame; | |
595 | struct dwarf2_section_names eh_frame; | |
596 | struct dwarf2_section_names gdb_index; | |
24d3216f TT |
597 | /* This field has no meaning, but exists solely to catch changes to |
598 | this structure which are not reflected in some instance. */ | |
599 | int sentinel; | |
251d32d9 TG |
600 | }; |
601 | ||
602 | extern int dwarf2_has_info (struct objfile *, | |
603 | const struct dwarf2_debug_sections *); | |
c906108c | 604 | |
3017a003 TG |
605 | /* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */ |
606 | enum dwarf2_section_enum { | |
607 | DWARF2_DEBUG_FRAME, | |
608 | DWARF2_EH_FRAME | |
609 | }; | |
610 | ||
611 | extern void dwarf2_get_section_info (struct objfile *, | |
612 | enum dwarf2_section_enum, | |
613 | asection **, gdb_byte **, | |
614 | bfd_size_type *); | |
615 | ||
9291a0cd | 616 | extern int dwarf2_initialize_objfile (struct objfile *); |
f29dff0a | 617 | extern void dwarf2_build_psymtabs (struct objfile *); |
b6af0555 | 618 | extern void dwarf2_build_frame_info (struct objfile *); |
d4f3574e | 619 | |
fe3e1990 DJ |
620 | void dwarf2_free_objfile (struct objfile *); |
621 | ||
c906108c SS |
622 | /* From mdebugread.c */ |
623 | ||
624 | /* Hack to force structures to exist before use in parameter list. */ | |
625 | struct ecoff_debug_hack | |
3a6c3343 AC |
626 | { |
627 | struct ecoff_debug_swap *a; | |
628 | struct ecoff_debug_info *b; | |
629 | }; | |
630 | ||
631 | extern void mdebug_build_psymtabs (struct objfile *, | |
632 | const struct ecoff_debug_swap *, | |
633 | struct ecoff_debug_info *); | |
634 | ||
635 | extern void elfmdebug_build_psymtabs (struct objfile *, | |
636 | const struct ecoff_debug_swap *, | |
637 | asection *); | |
c906108c | 638 | |
c5aa993b | 639 | #endif /* !defined(SYMFILE_H) */ |