Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Definitions for reading symbol files into GDB. |
3a6c3343 | 2 | |
ecd75fc8 | 3 | Copyright (C) 1990-2014 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #if !defined (SYMFILE_H) | |
21 | #define SYMFILE_H | |
22 | ||
23 | /* This file requires that you first include "bfd.h". */ | |
16708cba | 24 | #include "symtab.h" |
48faced0 | 25 | #include "probe.h" |
c906108c | 26 | |
63ca651f | 27 | /* Opaque declarations. */ |
0542c86d | 28 | struct target_section; |
da3331ec | 29 | struct objfile; |
1c772458 | 30 | struct obj_section; |
63ca651f | 31 | struct obstack; |
fe898f56 | 32 | struct block; |
55aa24fb SDJ |
33 | struct probe; |
34 | struct value; | |
35 | struct frame_info; | |
36 | struct agent_expr; | |
37 | struct axs_value; | |
63ca651f | 38 | |
2edb89d3 JK |
39 | /* Comparison function for symbol look ups. */ |
40 | ||
41 | typedef int (symbol_compare_ftype) (const char *string1, | |
42 | const char *string2); | |
43 | ||
3a6c3343 AC |
44 | /* Partial symbols are stored in the psymbol_cache and pointers to |
45 | them are kept in a dynamically grown array that is obtained from | |
46 | malloc and grown as necessary via realloc. Each objfile typically | |
47 | has two of these, one for global symbols and one for static | |
48 | symbols. Although this adds a level of indirection for storing or | |
49 | accessing the partial symbols, it allows us to throw away duplicate | |
50 | psymbols and set all pointers to the single saved instance. */ | |
c906108c | 51 | |
c5aa993b | 52 | struct psymbol_allocation_list |
3a6c3343 | 53 | { |
c906108c | 54 | |
3a6c3343 AC |
55 | /* Pointer to beginning of dynamically allocated array of pointers |
56 | to partial symbols. The array is dynamically expanded as | |
57 | necessary to accommodate more pointers. */ | |
c906108c | 58 | |
3a6c3343 | 59 | struct partial_symbol **list; |
c906108c | 60 | |
3a6c3343 AC |
61 | /* Pointer to next available slot in which to store a pointer to a |
62 | partial symbol. */ | |
c906108c | 63 | |
3a6c3343 | 64 | struct partial_symbol **next; |
c906108c | 65 | |
3a6c3343 AC |
66 | /* Number of allocated pointer slots in current dynamic array (not |
67 | the number of bytes of storage). The "next" pointer will always | |
68 | point somewhere between list[0] and list[size], and when at | |
69 | list[size] the array will be expanded on the next attempt to | |
70 | store a pointer. */ | |
c906108c | 71 | |
3a6c3343 AC |
72 | int size; |
73 | }; | |
c906108c | 74 | |
62557bbc KB |
75 | /* Define an array of addresses to accommodate non-contiguous dynamic |
76 | loading of modules. This is for use when entering commands, so we | |
3a6c3343 AC |
77 | can keep track of the section names until we read the file and can |
78 | map them to bfd sections. This structure is also used by solib.c | |
79 | to communicate the section addresses in shared objects to | |
80 | symbol_file_add (). */ | |
81 | ||
82 | struct section_addr_info | |
62557bbc | 83 | { |
a39a16c4 MM |
84 | /* The number of sections for which address information is |
85 | available. */ | |
86 | size_t num_sections; | |
c378eb4e | 87 | /* Sections whose names are file format dependent. */ |
62557bbc KB |
88 | struct other_sections |
89 | { | |
90 | CORE_ADDR addr; | |
91 | char *name; | |
672d9c23 | 92 | |
5488dafb | 93 | /* SECTINDEX must be valid for associated BFD or set to -1. */ |
62557bbc | 94 | int sectindex; |
a39a16c4 | 95 | } other[1]; |
62557bbc KB |
96 | }; |
97 | ||
28c32713 JB |
98 | |
99 | /* A table listing the load segments in a symfile, and which segment | |
100 | each BFD section belongs to. */ | |
31d99776 DJ |
101 | struct symfile_segment_data |
102 | { | |
103 | /* How many segments are present in this file. If there are | |
104 | two, the text segment is the first one and the data segment | |
105 | is the second one. */ | |
106 | int num_segments; | |
107 | ||
108 | /* If NUM_SEGMENTS is greater than zero, the original base address | |
109 | of each segment. */ | |
110 | CORE_ADDR *segment_bases; | |
111 | ||
112 | /* If NUM_SEGMENTS is greater than zero, the memory size of each | |
113 | segment. */ | |
114 | CORE_ADDR *segment_sizes; | |
115 | ||
116 | /* If NUM_SEGMENTS is greater than zero, this is an array of entries | |
28c32713 JB |
117 | recording which segment contains each BFD section. |
118 | SEGMENT_INFO[I] is S+1 if the I'th BFD section belongs to segment | |
119 | S, or zero if it is not in any segment. */ | |
31d99776 DJ |
120 | int *segment_info; |
121 | }; | |
122 | ||
44b13c5a JK |
123 | /* Callback for quick_symbol_functions->map_symbol_filenames. */ |
124 | ||
125 | typedef void (symbol_filename_ftype) (const char *filename, | |
126 | const char *fullname, void *data); | |
127 | ||
ccefe4c4 TT |
128 | /* The "quick" symbol functions exist so that symbol readers can |
129 | avoiding an initial read of all the symbols. For example, symbol | |
130 | readers might choose to use the "partial symbol table" utilities, | |
131 | which is one implementation of the quick symbol functions. | |
132 | ||
133 | The quick symbol functions are generally opaque: the underlying | |
134 | representation is hidden from the caller. | |
135 | ||
136 | In general, these functions should only look at whatever special | |
137 | index the symbol reader creates -- looking through the symbol | |
138 | tables themselves is handled by generic code. If a function is | |
139 | defined as returning a "symbol table", this means that the function | |
140 | should only return a newly-created symbol table; it should not | |
141 | examine pre-existing ones. | |
142 | ||
143 | The exact list of functions here was determined in an ad hoc way | |
144 | based on gdb's history. */ | |
145 | ||
146 | struct quick_symbol_functions | |
147 | { | |
148 | /* Return true if this objfile has any "partial" symbols | |
149 | available. */ | |
150 | int (*has_symbols) (struct objfile *objfile); | |
151 | ||
152 | /* Return the symbol table for the "last" file appearing in | |
153 | OBJFILE. */ | |
154 | struct symtab *(*find_last_source_symtab) (struct objfile *objfile); | |
155 | ||
156 | /* Forget all cached full file names for OBJFILE. */ | |
157 | void (*forget_cached_source_info) (struct objfile *objfile); | |
158 | ||
f8eba3c6 TT |
159 | /* Expand and iterate over each "partial" symbol table in OBJFILE |
160 | where the source file is named NAME. | |
161 | ||
af529f8f JK |
162 | If NAME is not absolute, a match after a '/' in the symbol table's |
163 | file name will also work, REAL_PATH is NULL then. If NAME is | |
164 | absolute then REAL_PATH is non-NULL absolute file name as resolved | |
165 | via gdb_realpath from NAME. | |
f8eba3c6 TT |
166 | |
167 | If a match is found, the "partial" symbol table is expanded. | |
168 | Then, this calls iterate_over_some_symtabs (or equivalent) over | |
169 | all newly-created symbol tables, passing CALLBACK and DATA to it. | |
170 | The result of this call is returned. */ | |
171 | int (*map_symtabs_matching_filename) (struct objfile *objfile, | |
172 | const char *name, | |
f8eba3c6 TT |
173 | const char *real_path, |
174 | int (*callback) (struct symtab *, | |
175 | void *), | |
176 | void *data); | |
ccefe4c4 TT |
177 | |
178 | /* Check to see if the symbol is defined in a "partial" symbol table | |
179 | of OBJFILE. KIND should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
180 | depending on whether we want to search global symbols or static | |
181 | symbols. NAME is the name of the symbol to look for. DOMAIN | |
182 | indicates what sort of symbol to search for. | |
183 | ||
184 | Returns the newly-expanded symbol table in which the symbol is | |
bfb05775 JK |
185 | defined, or NULL if no such symbol table exists. If OBJFILE |
186 | contains !TYPE_OPAQUE symbol prefer its symtab. If it contains | |
187 | only TYPE_OPAQUE symbol(s), return at least that symtab. */ | |
ccefe4c4 TT |
188 | struct symtab *(*lookup_symbol) (struct objfile *objfile, |
189 | int kind, const char *name, | |
190 | domain_enum domain); | |
191 | ||
192 | /* Print statistics about any indices loaded for OBJFILE. The | |
193 | statistics should be printed to gdb_stdout. This is used for | |
194 | "maint print statistics". */ | |
195 | void (*print_stats) (struct objfile *objfile); | |
196 | ||
197 | /* Dump any indices loaded for OBJFILE. The dump should go to | |
198 | gdb_stdout. This is used for "maint print objfiles". */ | |
199 | void (*dump) (struct objfile *objfile); | |
200 | ||
201 | /* This is called by objfile_relocate to relocate any indices loaded | |
202 | for OBJFILE. */ | |
203 | void (*relocate) (struct objfile *objfile, | |
3189cb12 DE |
204 | const struct section_offsets *new_offsets, |
205 | const struct section_offsets *delta); | |
ccefe4c4 TT |
206 | |
207 | /* Find all the symbols in OBJFILE named FUNC_NAME, and ensure that | |
208 | the corresponding symbol tables are loaded. */ | |
209 | void (*expand_symtabs_for_function) (struct objfile *objfile, | |
210 | const char *func_name); | |
211 | ||
212 | /* Read all symbol tables associated with OBJFILE. */ | |
213 | void (*expand_all_symtabs) (struct objfile *objfile); | |
214 | ||
652a8996 JK |
215 | /* Read all symbol tables associated with OBJFILE which have |
216 | symtab_to_fullname equal to FULLNAME. | |
d4637a04 DE |
217 | This is for the purposes of examining code only, e.g., expand_line_sal. |
218 | The routine may ignore debug info that is known to not be useful with | |
219 | code, e.g., DW_TAG_type_unit for dwarf debug info. */ | |
652a8996 JK |
220 | void (*expand_symtabs_with_fullname) (struct objfile *objfile, |
221 | const char *fullname); | |
ccefe4c4 | 222 | |
40658b94 PH |
223 | /* Find global or static symbols in all tables that are in NAMESPACE |
224 | and for which MATCH (symbol name, NAME) == 0, passing each to | |
265e52c3 | 225 | CALLBACK, reading in partial symbol tables as needed. Look |
c378eb4e | 226 | through global symbols if GLOBAL and otherwise static symbols. |
40658b94 PH |
227 | Passes NAME, NAMESPACE, and DATA to CALLBACK with each symbol |
228 | found. After each block is processed, passes NULL to CALLBACK. | |
1e3a8f45 JB |
229 | MATCH must be weaker than strcmp_iw_ordered in the sense that |
230 | strcmp_iw_ordered(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE, | |
231 | if non-null, must be an ordering relation compatible with | |
232 | strcmp_iw_ordered in the sense that | |
233 | strcmp_iw_ordered(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0 | |
40658b94 | 234 | and |
1e3a8f45 JB |
235 | strcmp_iw_ordered(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0 |
236 | (allowing strcmp_iw_ordered(x,y) < 0 while ORDERED_COMPARE(x, y) == 0). | |
40658b94 PH |
237 | CALLBACK returns 0 to indicate that the scan should continue, or |
238 | non-zero to indicate that the scan should be terminated. */ | |
239 | ||
ade7ed9e DE |
240 | void (*map_matching_symbols) (struct objfile *, |
241 | const char *name, domain_enum namespace, | |
242 | int global, | |
40658b94 PH |
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. |
fbd9ab74 JK |
254 | If BASENAMES is non-zero the function should consider only base name of |
255 | DATA (passed file name is already only the lbasename part). | |
ccefe4c4 | 256 | |
7b08b9eb | 257 | Otherwise, if KIND does not match this symbol is skipped. |
74ccd7f5 | 258 | |
f8eba3c6 | 259 | If even KIND matches, then NAME_MATCHER is called for each symbol |
e078317b JB |
260 | defined in the file. The symbol "search" name and DATA are passed |
261 | to NAME_MATCHER. | |
ccefe4c4 TT |
262 | |
263 | If NAME_MATCHER returns zero, then this symbol is skipped. | |
264 | ||
7b08b9eb JK |
265 | Otherwise, this symbol's symbol table is expanded. |
266 | ||
ccefe4c4 TT |
267 | DATA is user data that is passed unmodified to the callback |
268 | functions. */ | |
f8eba3c6 TT |
269 | void (*expand_symtabs_matching) |
270 | (struct objfile *objfile, | |
fbd9ab74 | 271 | int (*file_matcher) (const char *, void *, int basenames), |
e078317b | 272 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
273 | enum search_domain kind, |
274 | void *data); | |
ccefe4c4 TT |
275 | |
276 | /* Return the symbol table from OBJFILE that contains PC and | |
277 | SECTION. Return NULL if there is no such symbol table. This | |
278 | should return the symbol table that contains a symbol whose | |
279 | address exactly matches PC, or, if there is no exact match, the | |
280 | symbol table that contains a symbol whose address is closest to | |
281 | PC. */ | |
282 | struct symtab *(*find_pc_sect_symtab) (struct objfile *objfile, | |
283 | struct minimal_symbol *msymbol, | |
284 | CORE_ADDR pc, | |
285 | struct obj_section *section, | |
286 | int warn_if_readin); | |
287 | ||
ad727bb2 | 288 | /* Call a callback for every file defined in OBJFILE whose symtab is |
44b13c5a | 289 | not already read in. FUN is the callback. It is passed the file's |
74e2f255 DE |
290 | FILENAME, the file's FULLNAME (if need_fullname is non-zero), and |
291 | the DATA passed to this function. */ | |
ccefe4c4 | 292 | void (*map_symbol_filenames) (struct objfile *objfile, |
74e2f255 DE |
293 | symbol_filename_ftype *fun, void *data, |
294 | int need_fullname); | |
ccefe4c4 TT |
295 | }; |
296 | ||
55aa24fb SDJ |
297 | /* Structure of functions used for probe support. If one of these functions |
298 | is provided, all must be. */ | |
299 | ||
300 | struct sym_probe_fns | |
301 | { | |
302 | /* If non-NULL, return an array of probe objects. | |
303 | ||
304 | The returned value does not have to be freed and it has lifetime of the | |
305 | OBJFILE. */ | |
306 | VEC (probe_p) *(*sym_get_probes) (struct objfile *); | |
307 | ||
55aa24fb SDJ |
308 | /* Relocate the probe section of OBJFILE. */ |
309 | void (*sym_relocate_probe) (struct objfile *objfile, | |
3189cb12 DE |
310 | const struct section_offsets *new_offsets, |
311 | const struct section_offsets *delta); | |
55aa24fb SDJ |
312 | }; |
313 | ||
c906108c SS |
314 | /* Structure to keep track of symbol reading functions for various |
315 | object file types. */ | |
316 | ||
c5aa993b | 317 | struct sym_fns |
3a6c3343 | 318 | { |
3a6c3343 AC |
319 | /* Initializes anything that is global to the entire symbol table. |
320 | It is called during symbol_file_add, when we begin debugging an | |
321 | entirely new program. */ | |
c906108c | 322 | |
3a6c3343 | 323 | void (*sym_new_init) (struct objfile *); |
c906108c | 324 | |
3a6c3343 AC |
325 | /* Reads any initial information from a symbol file, and initializes |
326 | the struct sym_fns SF in preparation for sym_read(). It is | |
327 | called every time we read a symbol file for any reason. */ | |
c906108c | 328 | |
3a6c3343 | 329 | void (*sym_init) (struct objfile *); |
c906108c | 330 | |
f4352531 | 331 | /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab |
3a6c3343 | 332 | (or possibly a symtab). OBJFILE is the objfile struct for the |
f4352531 TG |
333 | file we are reading. SYMFILE_FLAGS are the flags passed to |
334 | symbol_file_add & co. */ | |
c906108c | 335 | |
3a6c3343 | 336 | void (*sym_read) (struct objfile *, int); |
c906108c | 337 | |
3e03848b JK |
338 | /* Read the partial symbols for an objfile. This may be NULL, in which case |
339 | gdb has to check other ways if this objfile has any symbols. This may | |
340 | only be non-NULL if the objfile actually does have debuginfo available. | |
341 | */ | |
b11896a5 TT |
342 | |
343 | void (*sym_read_psymbols) (struct objfile *); | |
344 | ||
3a6c3343 AC |
345 | /* Called when we are finished with an objfile. Should do all |
346 | cleanup that is specific to the object file format for the | |
347 | particular objfile. */ | |
c906108c | 348 | |
3a6c3343 | 349 | void (*sym_finish) (struct objfile *); |
c906108c | 350 | |
3a6c3343 AC |
351 | /* This function produces a file-dependent section_offsets |
352 | structure, allocated in the objfile's storage, and based on the | |
353 | parameter. The parameter is currently a CORE_ADDR (FIXME!) for | |
354 | backward compatibility with the higher levels of GDB. It should | |
355 | probably be changed to a string, where NULL means the default, | |
356 | and others are parsed in a file dependent way. */ | |
c906108c | 357 | |
3189cb12 | 358 | void (*sym_offsets) (struct objfile *, const struct section_addr_info *); |
c906108c | 359 | |
31d99776 DJ |
360 | /* This function produces a format-independent description of |
361 | the segments of ABFD. Each segment is a unit of the file | |
362 | which may be relocated independently. */ | |
363 | ||
364 | struct symfile_segment_data *(*sym_segments) (bfd *abfd); | |
365 | ||
c295b2e5 JB |
366 | /* This function should read the linetable from the objfile when |
367 | the line table cannot be read while processing the debugging | |
368 | information. */ | |
ac8035ab | 369 | |
f56ce883 | 370 | void (*sym_read_linetable) (struct objfile *); |
c295b2e5 | 371 | |
ac8035ab TG |
372 | /* Relocate the contents of a debug section SECTP. The |
373 | contents are stored in BUF if it is non-NULL, or returned in a | |
374 | malloc'd buffer otherwise. */ | |
375 | ||
376 | bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf); | |
377 | ||
55aa24fb SDJ |
378 | /* If non-NULL, this objfile has probe support, and all the probe |
379 | functions referred to here will be non-NULL. */ | |
380 | const struct sym_probe_fns *sym_probe_fns; | |
381 | ||
ccefe4c4 TT |
382 | /* The "quick" (aka partial) symbol functions for this symbol |
383 | reader. */ | |
384 | const struct quick_symbol_functions *qf; | |
3a6c3343 | 385 | }; |
c906108c | 386 | |
567995e1 | 387 | extern struct section_addr_info * |
3e43a32a | 388 | build_section_addr_info_from_objfile (const struct objfile *objfile); |
567995e1 | 389 | |
75242ef4 JK |
390 | extern void relative_addr_info_to_section_offsets |
391 | (struct section_offsets *section_offsets, int num_sections, | |
3189cb12 | 392 | const struct section_addr_info *addrs); |
75242ef4 JK |
393 | |
394 | extern void addr_info_make_relative (struct section_addr_info *addrs, | |
395 | bfd *abfd); | |
396 | ||
c906108c SS |
397 | /* The default version of sym_fns.sym_offsets for readers that don't |
398 | do anything special. */ | |
399 | ||
570b8f7c | 400 | extern void default_symfile_offsets (struct objfile *objfile, |
3189cb12 | 401 | const struct section_addr_info *); |
c906108c | 402 | |
31d99776 DJ |
403 | /* The default version of sym_fns.sym_segments for readers that don't |
404 | do anything special. */ | |
405 | ||
406 | extern struct symfile_segment_data *default_symfile_segments (bfd *abfd); | |
c906108c | 407 | |
ac8035ab TG |
408 | /* The default version of sym_fns.sym_relocate for readers that don't |
409 | do anything special. */ | |
410 | ||
411 | extern bfd_byte *default_symfile_relocate (struct objfile *objfile, | |
412 | asection *sectp, bfd_byte *buf); | |
413 | ||
4e04028d JK |
414 | extern struct symtab *allocate_symtab (const char *, struct objfile *) |
415 | ATTRIBUTE_NONNULL (1); | |
c906108c | 416 | |
c256e171 | 417 | extern void add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *); |
c906108c | 418 | |
7eedccfa | 419 | /* This enum encodes bit-flags passed as ADD_FLAGS parameter to |
6bf667bb | 420 | symbol_file_add, etc. */ |
7eedccfa PP |
421 | |
422 | enum symfile_add_flags | |
423 | { | |
424 | /* Be chatty about what you are doing. */ | |
425 | SYMFILE_VERBOSE = 1 << 1, | |
426 | ||
427 | /* This is the main symbol file (as opposed to symbol file for dynamically | |
428 | loaded code). */ | |
429 | SYMFILE_MAINLINE = 1 << 2, | |
430 | ||
431 | /* Do not call breakpoint_re_set when adding this symbol file. */ | |
b11896a5 TT |
432 | SYMFILE_DEFER_BP_RESET = 1 << 3, |
433 | ||
434 | /* Do not immediately read symbols for this file. By default, | |
435 | symbols are read when the objfile is created. */ | |
436 | SYMFILE_NO_READ = 1 << 4 | |
7eedccfa PP |
437 | }; |
438 | ||
7eedccfa | 439 | extern void new_symfile_objfile (struct objfile *, int); |
c906108c | 440 | |
69150c3d | 441 | extern struct objfile *symbol_file_add (const char *, int, |
7eedccfa | 442 | struct section_addr_info *, int); |
62557bbc | 443 | |
24ba069a | 444 | extern struct objfile *symbol_file_add_from_bfd (bfd *, const char *, int, |
eb4556d7 | 445 | struct section_addr_info *, |
63524580 | 446 | int, struct objfile *parent); |
eb4556d7 | 447 | |
24ba069a JK |
448 | extern void symbol_file_add_separate (bfd *, const char *, int, |
449 | struct objfile *); | |
9cce227f | 450 | |
15d123c9 | 451 | extern char *find_separate_debug_file_by_debuglink (struct objfile *); |
9cce227f | 452 | |
a39a16c4 MM |
453 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
454 | ||
3a6c3343 AC |
455 | extern struct section_addr_info *alloc_section_addr_info (size_t |
456 | num_sections); | |
a39a16c4 | 457 | |
3a6c3343 AC |
458 | /* Build (allocate and populate) a section_addr_info struct from an |
459 | existing section table. */ | |
62557bbc | 460 | |
3a6c3343 | 461 | extern struct section_addr_info |
0542c86d | 462 | *build_section_addr_info_from_section_table (const struct target_section |
3a6c3343 | 463 | *start, |
0542c86d | 464 | const struct target_section |
3a6c3343 | 465 | *end); |
62557bbc | 466 | |
3a6c3343 AC |
467 | /* Free all memory allocated by |
468 | build_section_addr_info_from_section_table. */ | |
62557bbc | 469 | |
570b8f7c | 470 | extern void free_section_addr_info (struct section_addr_info *); |
62557bbc KB |
471 | |
472 | ||
c906108c SS |
473 | /* Variables */ |
474 | ||
b7209cb4 FF |
475 | /* If non-zero, shared library symbols will be added automatically |
476 | when the inferior is created, new libraries are loaded, or when | |
477 | attaching to the inferior. This is almost always what users will | |
478 | want to have happen; but for very large programs, the startup time | |
479 | will be excessive, and so if this is a problem, the user can clear | |
480 | this flag and then add the shared library symbols as needed. Note | |
481 | that there is a potential for confusion, since if the shared | |
482 | library symbols are not loaded, commands like "info fun" will *not* | |
3a6c3343 | 483 | report all the functions that are actually present. */ |
c906108c | 484 | |
b7209cb4 | 485 | extern int auto_solib_add; |
c906108c | 486 | |
c906108c SS |
487 | /* From symfile.c */ |
488 | ||
8b60591b JB |
489 | extern void set_initial_language (void); |
490 | ||
4efb68b1 | 491 | extern void find_lowest_section (bfd *, asection *, void *); |
c906108c | 492 | |
69150c3d | 493 | extern bfd *symfile_bfd_open (const char *); |
c906108c | 494 | |
08d2cd74 | 495 | extern bfd *gdb_bfd_open_maybe_remote (const char *); |
874f5765 | 496 | |
e2f6d8e5 JB |
497 | extern int get_section_index (struct objfile *, char *); |
498 | ||
c906108c | 499 | /* Utility functions for overlay sections: */ |
3a6c3343 AC |
500 | extern enum overlay_debugging_state |
501 | { | |
502 | ovly_off, | |
503 | ovly_on, | |
d874f1e2 MS |
504 | ovly_auto |
505 | } overlay_debugging; | |
c906108c SS |
506 | extern int overlay_cache_invalid; |
507 | ||
3a6c3343 | 508 | /* Return the "mapped" overlay section containing the PC. */ |
714835d5 | 509 | extern struct obj_section *find_pc_mapped_section (CORE_ADDR); |
c906108c | 510 | |
3a6c3343 AC |
511 | /* Return any overlay section containing the PC (even in its LMA |
512 | region). */ | |
714835d5 | 513 | extern struct obj_section *find_pc_overlay (CORE_ADDR); |
c906108c | 514 | |
3a6c3343 | 515 | /* Return true if the section is an overlay. */ |
714835d5 | 516 | extern int section_is_overlay (struct obj_section *); |
c906108c | 517 | |
3a6c3343 | 518 | /* Return true if the overlay section is currently "mapped". */ |
714835d5 | 519 | extern int section_is_mapped (struct obj_section *); |
c906108c | 520 | |
3a6c3343 | 521 | /* Return true if pc belongs to section's VMA. */ |
714835d5 | 522 | extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 523 | |
3a6c3343 | 524 | /* Return true if pc belongs to section's LMA. */ |
714835d5 | 525 | extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 526 | |
3a6c3343 | 527 | /* Map an address from a section's LMA to its VMA. */ |
714835d5 | 528 | extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 529 | |
3a6c3343 | 530 | /* Map an address from a section's VMA to its LMA. */ |
714835d5 | 531 | extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 532 | |
3a6c3343 | 533 | /* Convert an address in an overlay section (force into VMA range). */ |
714835d5 | 534 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
c906108c | 535 | |
3a6c3343 | 536 | /* Load symbols from a file. */ |
69150c3d | 537 | extern void symbol_file_add_main (const char *args, int from_tty); |
1adeb98a | 538 | |
3a6c3343 | 539 | /* Clear GDB symbol tables. */ |
1adeb98a FN |
540 | extern void symbol_file_clear (int from_tty); |
541 | ||
1c772458 UW |
542 | /* Default overlay update function. */ |
543 | extern void simple_overlay_update (struct obj_section *); | |
544 | ||
ac8035ab TG |
545 | extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, |
546 | bfd_byte *); | |
086df311 | 547 | |
31d99776 | 548 | extern int symfile_map_offsets_to_segments (bfd *, |
3189cb12 | 549 | const struct symfile_segment_data *, |
31d99776 DJ |
550 | struct section_offsets *, |
551 | int, const CORE_ADDR *); | |
552 | struct symfile_segment_data *get_symfile_segment_data (bfd *abfd); | |
553 | void free_symfile_segment_data (struct symfile_segment_data *data); | |
554 | ||
ccefe4c4 TT |
555 | extern struct cleanup *increment_reading_symtab (void); |
556 | ||
c906108c SS |
557 | /* From dwarf2read.c */ |
558 | ||
251d32d9 TG |
559 | /* Names for a dwarf2 debugging section. The field NORMAL is the normal |
560 | section name (usually from the DWARF standard), while the field COMPRESSED | |
561 | is the name of compressed sections. If your object file format doesn't | |
562 | support compressed sections, the field COMPRESSED can be NULL. Likewise, | |
563 | the debugging section is not supported, the field NORMAL can be NULL too. | |
564 | It doesn't make sense to have a NULL NORMAL field but a non-NULL COMPRESSED | |
565 | field. */ | |
566 | ||
567 | struct dwarf2_section_names { | |
568 | const char *normal; | |
569 | const char *compressed; | |
570 | }; | |
571 | ||
572 | /* List of names for dward2 debugging sections. Also most object file formats | |
573 | use the standardized (ie ELF) names, some (eg XCOFF) have customized names | |
574 | due to restrictions. | |
575 | The table for the standard names is defined in dwarf2read.c. Please | |
576 | update all instances of dwarf2_debug_sections if you add a field to this | |
577 | structure. It is always safe to use { NULL, NULL } in this case. */ | |
578 | ||
579 | struct dwarf2_debug_sections { | |
580 | struct dwarf2_section_names info; | |
581 | struct dwarf2_section_names abbrev; | |
582 | struct dwarf2_section_names line; | |
583 | struct dwarf2_section_names loc; | |
584 | struct dwarf2_section_names macinfo; | |
cf2c3c16 | 585 | struct dwarf2_section_names macro; |
251d32d9 TG |
586 | struct dwarf2_section_names str; |
587 | struct dwarf2_section_names ranges; | |
588 | struct dwarf2_section_names types; | |
3019eac3 | 589 | struct dwarf2_section_names addr; |
251d32d9 TG |
590 | struct dwarf2_section_names frame; |
591 | struct dwarf2_section_names eh_frame; | |
592 | struct dwarf2_section_names gdb_index; | |
24d3216f TT |
593 | /* This field has no meaning, but exists solely to catch changes to |
594 | this structure which are not reflected in some instance. */ | |
595 | int sentinel; | |
251d32d9 TG |
596 | }; |
597 | ||
598 | extern int dwarf2_has_info (struct objfile *, | |
599 | const struct dwarf2_debug_sections *); | |
c906108c | 600 | |
3017a003 TG |
601 | /* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */ |
602 | enum dwarf2_section_enum { | |
603 | DWARF2_DEBUG_FRAME, | |
604 | DWARF2_EH_FRAME | |
605 | }; | |
606 | ||
607 | extern void dwarf2_get_section_info (struct objfile *, | |
608 | enum dwarf2_section_enum, | |
d521ce57 | 609 | asection **, const gdb_byte **, |
3017a003 TG |
610 | bfd_size_type *); |
611 | ||
9291a0cd | 612 | extern int dwarf2_initialize_objfile (struct objfile *); |
f29dff0a | 613 | extern void dwarf2_build_psymtabs (struct objfile *); |
b6af0555 | 614 | extern void dwarf2_build_frame_info (struct objfile *); |
d4f3574e | 615 | |
fe3e1990 DJ |
616 | void dwarf2_free_objfile (struct objfile *); |
617 | ||
c906108c SS |
618 | /* From mdebugread.c */ |
619 | ||
3a6c3343 AC |
620 | extern void mdebug_build_psymtabs (struct objfile *, |
621 | const struct ecoff_debug_swap *, | |
622 | struct ecoff_debug_info *); | |
623 | ||
624 | extern void elfmdebug_build_psymtabs (struct objfile *, | |
625 | const struct ecoff_debug_swap *, | |
626 | asection *); | |
c906108c | 627 | |
608e2dbb TT |
628 | /* From minidebug.c. */ |
629 | ||
630 | extern bfd *find_separate_debug_file_in_section (struct objfile *); | |
631 | ||
c5aa993b | 632 | #endif /* !defined(SYMFILE_H) */ |