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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 | ||
206f2a57 DE |
128 | /* Callback for quick_symbol_functions->expand_symtabs_matching |
129 | to match a file name. */ | |
130 | ||
131 | typedef int (expand_symtabs_file_matcher_ftype) (const char *filename, | |
132 | void *data, int basenames); | |
133 | ||
134 | /* Callback for quick_symbol_functions->expand_symtabs_matching | |
135 | to match a symbol name. */ | |
136 | ||
137 | typedef int (expand_symtabs_symbol_matcher_ftype) (const char *name, | |
138 | void *data); | |
139 | ||
ccefe4c4 TT |
140 | /* The "quick" symbol functions exist so that symbol readers can |
141 | avoiding an initial read of all the symbols. For example, symbol | |
142 | readers might choose to use the "partial symbol table" utilities, | |
143 | which is one implementation of the quick symbol functions. | |
144 | ||
145 | The quick symbol functions are generally opaque: the underlying | |
146 | representation is hidden from the caller. | |
147 | ||
148 | In general, these functions should only look at whatever special | |
149 | index the symbol reader creates -- looking through the symbol | |
150 | tables themselves is handled by generic code. If a function is | |
151 | defined as returning a "symbol table", this means that the function | |
152 | should only return a newly-created symbol table; it should not | |
153 | examine pre-existing ones. | |
154 | ||
155 | The exact list of functions here was determined in an ad hoc way | |
156 | based on gdb's history. */ | |
157 | ||
158 | struct quick_symbol_functions | |
159 | { | |
160 | /* Return true if this objfile has any "partial" symbols | |
161 | available. */ | |
162 | int (*has_symbols) (struct objfile *objfile); | |
163 | ||
164 | /* Return the symbol table for the "last" file appearing in | |
165 | OBJFILE. */ | |
166 | struct symtab *(*find_last_source_symtab) (struct objfile *objfile); | |
167 | ||
168 | /* Forget all cached full file names for OBJFILE. */ | |
169 | void (*forget_cached_source_info) (struct objfile *objfile); | |
170 | ||
f8eba3c6 TT |
171 | /* Expand and iterate over each "partial" symbol table in OBJFILE |
172 | where the source file is named NAME. | |
173 | ||
af529f8f JK |
174 | If NAME is not absolute, a match after a '/' in the symbol table's |
175 | file name will also work, REAL_PATH is NULL then. If NAME is | |
176 | absolute then REAL_PATH is non-NULL absolute file name as resolved | |
177 | via gdb_realpath from NAME. | |
f8eba3c6 TT |
178 | |
179 | If a match is found, the "partial" symbol table is expanded. | |
180 | Then, this calls iterate_over_some_symtabs (or equivalent) over | |
181 | all newly-created symbol tables, passing CALLBACK and DATA to it. | |
182 | The result of this call is returned. */ | |
183 | int (*map_symtabs_matching_filename) (struct objfile *objfile, | |
184 | const char *name, | |
f8eba3c6 TT |
185 | const char *real_path, |
186 | int (*callback) (struct symtab *, | |
187 | void *), | |
188 | void *data); | |
ccefe4c4 TT |
189 | |
190 | /* Check to see if the symbol is defined in a "partial" symbol table | |
191 | of OBJFILE. KIND should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
192 | depending on whether we want to search global symbols or static | |
193 | symbols. NAME is the name of the symbol to look for. DOMAIN | |
194 | indicates what sort of symbol to search for. | |
195 | ||
196 | Returns the newly-expanded symbol table in which the symbol is | |
bfb05775 JK |
197 | defined, or NULL if no such symbol table exists. If OBJFILE |
198 | contains !TYPE_OPAQUE symbol prefer its symtab. If it contains | |
199 | only TYPE_OPAQUE symbol(s), return at least that symtab. */ | |
ccefe4c4 TT |
200 | struct symtab *(*lookup_symbol) (struct objfile *objfile, |
201 | int kind, const char *name, | |
202 | domain_enum domain); | |
203 | ||
204 | /* Print statistics about any indices loaded for OBJFILE. The | |
205 | statistics should be printed to gdb_stdout. This is used for | |
206 | "maint print statistics". */ | |
207 | void (*print_stats) (struct objfile *objfile); | |
208 | ||
209 | /* Dump any indices loaded for OBJFILE. The dump should go to | |
210 | gdb_stdout. This is used for "maint print objfiles". */ | |
211 | void (*dump) (struct objfile *objfile); | |
212 | ||
213 | /* This is called by objfile_relocate to relocate any indices loaded | |
214 | for OBJFILE. */ | |
215 | void (*relocate) (struct objfile *objfile, | |
3189cb12 DE |
216 | const struct section_offsets *new_offsets, |
217 | const struct section_offsets *delta); | |
ccefe4c4 TT |
218 | |
219 | /* Find all the symbols in OBJFILE named FUNC_NAME, and ensure that | |
220 | the corresponding symbol tables are loaded. */ | |
221 | void (*expand_symtabs_for_function) (struct objfile *objfile, | |
222 | const char *func_name); | |
223 | ||
224 | /* Read all symbol tables associated with OBJFILE. */ | |
225 | void (*expand_all_symtabs) (struct objfile *objfile); | |
226 | ||
652a8996 JK |
227 | /* Read all symbol tables associated with OBJFILE which have |
228 | symtab_to_fullname equal to FULLNAME. | |
d4637a04 DE |
229 | This is for the purposes of examining code only, e.g., expand_line_sal. |
230 | The routine may ignore debug info that is known to not be useful with | |
231 | code, e.g., DW_TAG_type_unit for dwarf debug info. */ | |
652a8996 JK |
232 | void (*expand_symtabs_with_fullname) (struct objfile *objfile, |
233 | const char *fullname); | |
ccefe4c4 | 234 | |
40658b94 PH |
235 | /* Find global or static symbols in all tables that are in NAMESPACE |
236 | and for which MATCH (symbol name, NAME) == 0, passing each to | |
265e52c3 | 237 | CALLBACK, reading in partial symbol tables as needed. Look |
c378eb4e | 238 | through global symbols if GLOBAL and otherwise static symbols. |
40658b94 PH |
239 | Passes NAME, NAMESPACE, and DATA to CALLBACK with each symbol |
240 | found. After each block is processed, passes NULL to CALLBACK. | |
1e3a8f45 JB |
241 | MATCH must be weaker than strcmp_iw_ordered in the sense that |
242 | strcmp_iw_ordered(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE, | |
243 | if non-null, must be an ordering relation compatible with | |
244 | strcmp_iw_ordered in the sense that | |
245 | strcmp_iw_ordered(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0 | |
40658b94 | 246 | and |
1e3a8f45 JB |
247 | strcmp_iw_ordered(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0 |
248 | (allowing strcmp_iw_ordered(x,y) < 0 while ORDERED_COMPARE(x, y) == 0). | |
40658b94 PH |
249 | CALLBACK returns 0 to indicate that the scan should continue, or |
250 | non-zero to indicate that the scan should be terminated. */ | |
251 | ||
ade7ed9e DE |
252 | void (*map_matching_symbols) (struct objfile *, |
253 | const char *name, domain_enum namespace, | |
254 | int global, | |
40658b94 PH |
255 | int (*callback) (struct block *, |
256 | struct symbol *, void *), | |
257 | void *data, | |
2edb89d3 JK |
258 | symbol_compare_ftype *match, |
259 | symbol_compare_ftype *ordered_compare); | |
ccefe4c4 TT |
260 | |
261 | /* Expand all symbol tables in OBJFILE matching some criteria. | |
262 | ||
263 | FILE_MATCHER is called for each file in OBJFILE. The file name | |
264 | and the DATA argument are passed to it. If it returns zero, this | |
7b08b9eb | 265 | file is skipped. If FILE_MATCHER is NULL such file is not skipped. |
fbd9ab74 JK |
266 | If BASENAMES is non-zero the function should consider only base name of |
267 | DATA (passed file name is already only the lbasename part). | |
ccefe4c4 | 268 | |
7b08b9eb | 269 | Otherwise, if KIND does not match this symbol is skipped. |
74ccd7f5 | 270 | |
206f2a57 | 271 | If even KIND matches, then SYMBOL_MATCHER is called for each symbol |
e078317b | 272 | defined in the file. The symbol "search" name and DATA are passed |
206f2a57 | 273 | to SYMBOL_MATCHER. |
ccefe4c4 | 274 | |
206f2a57 | 275 | If SYMBOL_MATCHER returns zero, then this symbol is skipped. |
ccefe4c4 | 276 | |
7b08b9eb JK |
277 | Otherwise, this symbol's symbol table is expanded. |
278 | ||
ccefe4c4 TT |
279 | DATA is user data that is passed unmodified to the callback |
280 | functions. */ | |
f8eba3c6 TT |
281 | void (*expand_symtabs_matching) |
282 | (struct objfile *objfile, | |
206f2a57 DE |
283 | expand_symtabs_file_matcher_ftype *file_matcher, |
284 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, | |
f8eba3c6 TT |
285 | enum search_domain kind, |
286 | void *data); | |
ccefe4c4 TT |
287 | |
288 | /* Return the symbol table from OBJFILE that contains PC and | |
289 | SECTION. Return NULL if there is no such symbol table. This | |
290 | should return the symbol table that contains a symbol whose | |
291 | address exactly matches PC, or, if there is no exact match, the | |
292 | symbol table that contains a symbol whose address is closest to | |
293 | PC. */ | |
294 | struct symtab *(*find_pc_sect_symtab) (struct objfile *objfile, | |
77e371c0 | 295 | struct bound_minimal_symbol msymbol, |
ccefe4c4 TT |
296 | CORE_ADDR pc, |
297 | struct obj_section *section, | |
298 | int warn_if_readin); | |
299 | ||
ad727bb2 | 300 | /* Call a callback for every file defined in OBJFILE whose symtab is |
44b13c5a | 301 | not already read in. FUN is the callback. It is passed the file's |
74e2f255 DE |
302 | FILENAME, the file's FULLNAME (if need_fullname is non-zero), and |
303 | the DATA passed to this function. */ | |
ccefe4c4 | 304 | void (*map_symbol_filenames) (struct objfile *objfile, |
74e2f255 DE |
305 | symbol_filename_ftype *fun, void *data, |
306 | int need_fullname); | |
ccefe4c4 TT |
307 | }; |
308 | ||
55aa24fb SDJ |
309 | /* Structure of functions used for probe support. If one of these functions |
310 | is provided, all must be. */ | |
311 | ||
312 | struct sym_probe_fns | |
313 | { | |
314 | /* If non-NULL, return an array of probe objects. | |
315 | ||
316 | The returned value does not have to be freed and it has lifetime of the | |
317 | OBJFILE. */ | |
318 | VEC (probe_p) *(*sym_get_probes) (struct objfile *); | |
55aa24fb SDJ |
319 | }; |
320 | ||
c906108c SS |
321 | /* Structure to keep track of symbol reading functions for various |
322 | object file types. */ | |
323 | ||
c5aa993b | 324 | struct sym_fns |
3a6c3343 | 325 | { |
3a6c3343 AC |
326 | /* Initializes anything that is global to the entire symbol table. |
327 | It is called during symbol_file_add, when we begin debugging an | |
328 | entirely new program. */ | |
c906108c | 329 | |
3a6c3343 | 330 | void (*sym_new_init) (struct objfile *); |
c906108c | 331 | |
3a6c3343 AC |
332 | /* Reads any initial information from a symbol file, and initializes |
333 | the struct sym_fns SF in preparation for sym_read(). It is | |
334 | called every time we read a symbol file for any reason. */ | |
c906108c | 335 | |
3a6c3343 | 336 | void (*sym_init) (struct objfile *); |
c906108c | 337 | |
f4352531 | 338 | /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab |
3a6c3343 | 339 | (or possibly a symtab). OBJFILE is the objfile struct for the |
f4352531 TG |
340 | file we are reading. SYMFILE_FLAGS are the flags passed to |
341 | symbol_file_add & co. */ | |
c906108c | 342 | |
3a6c3343 | 343 | void (*sym_read) (struct objfile *, int); |
c906108c | 344 | |
3e03848b JK |
345 | /* Read the partial symbols for an objfile. This may be NULL, in which case |
346 | gdb has to check other ways if this objfile has any symbols. This may | |
347 | only be non-NULL if the objfile actually does have debuginfo available. | |
348 | */ | |
b11896a5 TT |
349 | |
350 | void (*sym_read_psymbols) (struct objfile *); | |
351 | ||
3a6c3343 AC |
352 | /* Called when we are finished with an objfile. Should do all |
353 | cleanup that is specific to the object file format for the | |
354 | particular objfile. */ | |
c906108c | 355 | |
3a6c3343 | 356 | void (*sym_finish) (struct objfile *); |
c906108c | 357 | |
3a6c3343 AC |
358 | /* This function produces a file-dependent section_offsets |
359 | structure, allocated in the objfile's storage, and based on the | |
360 | parameter. The parameter is currently a CORE_ADDR (FIXME!) for | |
361 | backward compatibility with the higher levels of GDB. It should | |
362 | probably be changed to a string, where NULL means the default, | |
363 | and others are parsed in a file dependent way. */ | |
c906108c | 364 | |
3189cb12 | 365 | void (*sym_offsets) (struct objfile *, const struct section_addr_info *); |
c906108c | 366 | |
31d99776 DJ |
367 | /* This function produces a format-independent description of |
368 | the segments of ABFD. Each segment is a unit of the file | |
369 | which may be relocated independently. */ | |
370 | ||
371 | struct symfile_segment_data *(*sym_segments) (bfd *abfd); | |
372 | ||
c295b2e5 JB |
373 | /* This function should read the linetable from the objfile when |
374 | the line table cannot be read while processing the debugging | |
375 | information. */ | |
ac8035ab | 376 | |
f56ce883 | 377 | void (*sym_read_linetable) (struct objfile *); |
c295b2e5 | 378 | |
ac8035ab TG |
379 | /* Relocate the contents of a debug section SECTP. The |
380 | contents are stored in BUF if it is non-NULL, or returned in a | |
381 | malloc'd buffer otherwise. */ | |
382 | ||
383 | bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf); | |
384 | ||
55aa24fb SDJ |
385 | /* If non-NULL, this objfile has probe support, and all the probe |
386 | functions referred to here will be non-NULL. */ | |
387 | const struct sym_probe_fns *sym_probe_fns; | |
388 | ||
ccefe4c4 TT |
389 | /* The "quick" (aka partial) symbol functions for this symbol |
390 | reader. */ | |
391 | const struct quick_symbol_functions *qf; | |
3a6c3343 | 392 | }; |
c906108c | 393 | |
567995e1 | 394 | extern struct section_addr_info * |
3e43a32a | 395 | build_section_addr_info_from_objfile (const struct objfile *objfile); |
567995e1 | 396 | |
75242ef4 JK |
397 | extern void relative_addr_info_to_section_offsets |
398 | (struct section_offsets *section_offsets, int num_sections, | |
3189cb12 | 399 | const struct section_addr_info *addrs); |
75242ef4 JK |
400 | |
401 | extern void addr_info_make_relative (struct section_addr_info *addrs, | |
402 | bfd *abfd); | |
403 | ||
c906108c SS |
404 | /* The default version of sym_fns.sym_offsets for readers that don't |
405 | do anything special. */ | |
406 | ||
570b8f7c | 407 | extern void default_symfile_offsets (struct objfile *objfile, |
3189cb12 | 408 | const struct section_addr_info *); |
c906108c | 409 | |
31d99776 DJ |
410 | /* The default version of sym_fns.sym_segments for readers that don't |
411 | do anything special. */ | |
412 | ||
413 | extern struct symfile_segment_data *default_symfile_segments (bfd *abfd); | |
c906108c | 414 | |
ac8035ab TG |
415 | /* The default version of sym_fns.sym_relocate for readers that don't |
416 | do anything special. */ | |
417 | ||
418 | extern bfd_byte *default_symfile_relocate (struct objfile *objfile, | |
419 | asection *sectp, bfd_byte *buf); | |
420 | ||
4e04028d JK |
421 | extern struct symtab *allocate_symtab (const char *, struct objfile *) |
422 | ATTRIBUTE_NONNULL (1); | |
c906108c | 423 | |
c256e171 | 424 | extern void add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *); |
c906108c | 425 | |
7eedccfa | 426 | /* This enum encodes bit-flags passed as ADD_FLAGS parameter to |
6bf667bb | 427 | symbol_file_add, etc. */ |
7eedccfa PP |
428 | |
429 | enum symfile_add_flags | |
430 | { | |
431 | /* Be chatty about what you are doing. */ | |
432 | SYMFILE_VERBOSE = 1 << 1, | |
433 | ||
434 | /* This is the main symbol file (as opposed to symbol file for dynamically | |
435 | loaded code). */ | |
436 | SYMFILE_MAINLINE = 1 << 2, | |
437 | ||
438 | /* Do not call breakpoint_re_set when adding this symbol file. */ | |
b11896a5 TT |
439 | SYMFILE_DEFER_BP_RESET = 1 << 3, |
440 | ||
441 | /* Do not immediately read symbols for this file. By default, | |
442 | symbols are read when the objfile is created. */ | |
443 | SYMFILE_NO_READ = 1 << 4 | |
7eedccfa PP |
444 | }; |
445 | ||
7eedccfa | 446 | extern void new_symfile_objfile (struct objfile *, int); |
c906108c | 447 | |
69150c3d | 448 | extern struct objfile *symbol_file_add (const char *, int, |
7eedccfa | 449 | struct section_addr_info *, int); |
62557bbc | 450 | |
24ba069a | 451 | extern struct objfile *symbol_file_add_from_bfd (bfd *, const char *, int, |
eb4556d7 | 452 | struct section_addr_info *, |
63524580 | 453 | int, struct objfile *parent); |
eb4556d7 | 454 | |
24ba069a JK |
455 | extern void symbol_file_add_separate (bfd *, const char *, int, |
456 | struct objfile *); | |
9cce227f | 457 | |
15d123c9 | 458 | extern char *find_separate_debug_file_by_debuglink (struct objfile *); |
9cce227f | 459 | |
a39a16c4 MM |
460 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
461 | ||
3a6c3343 AC |
462 | extern struct section_addr_info *alloc_section_addr_info (size_t |
463 | num_sections); | |
a39a16c4 | 464 | |
3a6c3343 AC |
465 | /* Build (allocate and populate) a section_addr_info struct from an |
466 | existing section table. */ | |
62557bbc | 467 | |
3a6c3343 | 468 | extern struct section_addr_info |
0542c86d | 469 | *build_section_addr_info_from_section_table (const struct target_section |
3a6c3343 | 470 | *start, |
0542c86d | 471 | const struct target_section |
3a6c3343 | 472 | *end); |
62557bbc | 473 | |
3a6c3343 AC |
474 | /* Free all memory allocated by |
475 | build_section_addr_info_from_section_table. */ | |
62557bbc | 476 | |
570b8f7c | 477 | extern void free_section_addr_info (struct section_addr_info *); |
62557bbc KB |
478 | |
479 | ||
c906108c SS |
480 | /* Variables */ |
481 | ||
b7209cb4 FF |
482 | /* If non-zero, shared library symbols will be added automatically |
483 | when the inferior is created, new libraries are loaded, or when | |
484 | attaching to the inferior. This is almost always what users will | |
485 | want to have happen; but for very large programs, the startup time | |
486 | will be excessive, and so if this is a problem, the user can clear | |
487 | this flag and then add the shared library symbols as needed. Note | |
488 | that there is a potential for confusion, since if the shared | |
489 | library symbols are not loaded, commands like "info fun" will *not* | |
3a6c3343 | 490 | report all the functions that are actually present. */ |
c906108c | 491 | |
b7209cb4 | 492 | extern int auto_solib_add; |
c906108c | 493 | |
c906108c SS |
494 | /* From symfile.c */ |
495 | ||
8b60591b JB |
496 | extern void set_initial_language (void); |
497 | ||
4efb68b1 | 498 | extern void find_lowest_section (bfd *, asection *, void *); |
c906108c | 499 | |
69150c3d | 500 | extern bfd *symfile_bfd_open (const char *); |
c906108c | 501 | |
08d2cd74 | 502 | extern bfd *gdb_bfd_open_maybe_remote (const char *); |
874f5765 | 503 | |
e2f6d8e5 JB |
504 | extern int get_section_index (struct objfile *, char *); |
505 | ||
770e7fc7 DE |
506 | extern int print_symbol_loading_p (int from_tty, int mainline, int full); |
507 | ||
c906108c | 508 | /* Utility functions for overlay sections: */ |
3a6c3343 AC |
509 | extern enum overlay_debugging_state |
510 | { | |
511 | ovly_off, | |
512 | ovly_on, | |
d874f1e2 MS |
513 | ovly_auto |
514 | } overlay_debugging; | |
c906108c SS |
515 | extern int overlay_cache_invalid; |
516 | ||
3a6c3343 | 517 | /* Return the "mapped" overlay section containing the PC. */ |
714835d5 | 518 | extern struct obj_section *find_pc_mapped_section (CORE_ADDR); |
c906108c | 519 | |
3a6c3343 AC |
520 | /* Return any overlay section containing the PC (even in its LMA |
521 | region). */ | |
714835d5 | 522 | extern struct obj_section *find_pc_overlay (CORE_ADDR); |
c906108c | 523 | |
3a6c3343 | 524 | /* Return true if the section is an overlay. */ |
714835d5 | 525 | extern int section_is_overlay (struct obj_section *); |
c906108c | 526 | |
3a6c3343 | 527 | /* Return true if the overlay section is currently "mapped". */ |
714835d5 | 528 | extern int section_is_mapped (struct obj_section *); |
c906108c | 529 | |
3a6c3343 | 530 | /* Return true if pc belongs to section's VMA. */ |
714835d5 | 531 | extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 532 | |
3a6c3343 | 533 | /* Return true if pc belongs to section's LMA. */ |
714835d5 | 534 | extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); |
c906108c | 535 | |
3a6c3343 | 536 | /* Map an address from a section's LMA to its VMA. */ |
714835d5 | 537 | extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 538 | |
3a6c3343 | 539 | /* Map an address from a section's VMA to its LMA. */ |
714835d5 | 540 | extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); |
c906108c | 541 | |
3a6c3343 | 542 | /* Convert an address in an overlay section (force into VMA range). */ |
714835d5 | 543 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
c906108c | 544 | |
3a6c3343 | 545 | /* Load symbols from a file. */ |
69150c3d | 546 | extern void symbol_file_add_main (const char *args, int from_tty); |
1adeb98a | 547 | |
3a6c3343 | 548 | /* Clear GDB symbol tables. */ |
1adeb98a FN |
549 | extern void symbol_file_clear (int from_tty); |
550 | ||
1c772458 UW |
551 | /* Default overlay update function. */ |
552 | extern void simple_overlay_update (struct obj_section *); | |
553 | ||
ac8035ab TG |
554 | extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, |
555 | bfd_byte *); | |
086df311 | 556 | |
31d99776 | 557 | extern int symfile_map_offsets_to_segments (bfd *, |
3189cb12 | 558 | const struct symfile_segment_data *, |
31d99776 DJ |
559 | struct section_offsets *, |
560 | int, const CORE_ADDR *); | |
561 | struct symfile_segment_data *get_symfile_segment_data (bfd *abfd); | |
562 | void free_symfile_segment_data (struct symfile_segment_data *data); | |
563 | ||
ccefe4c4 TT |
564 | extern struct cleanup *increment_reading_symtab (void); |
565 | ||
bb4142cf DE |
566 | void expand_symtabs_matching (expand_symtabs_file_matcher_ftype *, |
567 | expand_symtabs_symbol_matcher_ftype *, | |
568 | enum search_domain kind, void *data); | |
540c2971 | 569 | |
bb4142cf DE |
570 | void map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
571 | int need_fullname); | |
540c2971 | 572 | |
c906108c SS |
573 | /* From dwarf2read.c */ |
574 | ||
251d32d9 TG |
575 | /* Names for a dwarf2 debugging section. The field NORMAL is the normal |
576 | section name (usually from the DWARF standard), while the field COMPRESSED | |
577 | is the name of compressed sections. If your object file format doesn't | |
578 | support compressed sections, the field COMPRESSED can be NULL. Likewise, | |
579 | the debugging section is not supported, the field NORMAL can be NULL too. | |
580 | It doesn't make sense to have a NULL NORMAL field but a non-NULL COMPRESSED | |
581 | field. */ | |
582 | ||
583 | struct dwarf2_section_names { | |
584 | const char *normal; | |
585 | const char *compressed; | |
586 | }; | |
587 | ||
588 | /* List of names for dward2 debugging sections. Also most object file formats | |
589 | use the standardized (ie ELF) names, some (eg XCOFF) have customized names | |
590 | due to restrictions. | |
591 | The table for the standard names is defined in dwarf2read.c. Please | |
592 | update all instances of dwarf2_debug_sections if you add a field to this | |
593 | structure. It is always safe to use { NULL, NULL } in this case. */ | |
594 | ||
595 | struct dwarf2_debug_sections { | |
596 | struct dwarf2_section_names info; | |
597 | struct dwarf2_section_names abbrev; | |
598 | struct dwarf2_section_names line; | |
599 | struct dwarf2_section_names loc; | |
600 | struct dwarf2_section_names macinfo; | |
cf2c3c16 | 601 | struct dwarf2_section_names macro; |
251d32d9 TG |
602 | struct dwarf2_section_names str; |
603 | struct dwarf2_section_names ranges; | |
604 | struct dwarf2_section_names types; | |
3019eac3 | 605 | struct dwarf2_section_names addr; |
251d32d9 TG |
606 | struct dwarf2_section_names frame; |
607 | struct dwarf2_section_names eh_frame; | |
608 | struct dwarf2_section_names gdb_index; | |
24d3216f TT |
609 | /* This field has no meaning, but exists solely to catch changes to |
610 | this structure which are not reflected in some instance. */ | |
611 | int sentinel; | |
251d32d9 TG |
612 | }; |
613 | ||
614 | extern int dwarf2_has_info (struct objfile *, | |
615 | const struct dwarf2_debug_sections *); | |
c906108c | 616 | |
3017a003 TG |
617 | /* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */ |
618 | enum dwarf2_section_enum { | |
619 | DWARF2_DEBUG_FRAME, | |
620 | DWARF2_EH_FRAME | |
621 | }; | |
622 | ||
623 | extern void dwarf2_get_section_info (struct objfile *, | |
624 | enum dwarf2_section_enum, | |
d521ce57 | 625 | asection **, const gdb_byte **, |
3017a003 TG |
626 | bfd_size_type *); |
627 | ||
9291a0cd | 628 | extern int dwarf2_initialize_objfile (struct objfile *); |
f29dff0a | 629 | extern void dwarf2_build_psymtabs (struct objfile *); |
b6af0555 | 630 | extern void dwarf2_build_frame_info (struct objfile *); |
d4f3574e | 631 | |
fe3e1990 DJ |
632 | void dwarf2_free_objfile (struct objfile *); |
633 | ||
c906108c SS |
634 | /* From mdebugread.c */ |
635 | ||
3a6c3343 AC |
636 | extern void mdebug_build_psymtabs (struct objfile *, |
637 | const struct ecoff_debug_swap *, | |
638 | struct ecoff_debug_info *); | |
639 | ||
640 | extern void elfmdebug_build_psymtabs (struct objfile *, | |
641 | const struct ecoff_debug_swap *, | |
642 | asection *); | |
c906108c | 643 | |
608e2dbb TT |
644 | /* From minidebug.c. */ |
645 | ||
646 | extern bfd *find_separate_debug_file_in_section (struct objfile *); | |
647 | ||
c5aa993b | 648 | #endif /* !defined(SYMFILE_H) */ |