| 1 | /* Definitions for reading symbol files into GDB. |
| 2 | |
| 3 | Copyright (C) 1990-2014 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 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 |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 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. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #if !defined (SYMFILE_H) |
| 21 | #define SYMFILE_H |
| 22 | |
| 23 | /* This file requires that you first include "bfd.h". */ |
| 24 | #include "symtab.h" |
| 25 | #include "probe.h" |
| 26 | |
| 27 | /* Opaque declarations. */ |
| 28 | struct target_section; |
| 29 | struct objfile; |
| 30 | struct obj_section; |
| 31 | struct obstack; |
| 32 | struct block; |
| 33 | struct probe; |
| 34 | struct value; |
| 35 | struct frame_info; |
| 36 | struct agent_expr; |
| 37 | struct axs_value; |
| 38 | |
| 39 | /* Comparison function for symbol look ups. */ |
| 40 | |
| 41 | typedef int (symbol_compare_ftype) (const char *string1, |
| 42 | const char *string2); |
| 43 | |
| 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. */ |
| 51 | |
| 52 | struct psymbol_allocation_list |
| 53 | { |
| 54 | |
| 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. */ |
| 58 | |
| 59 | struct partial_symbol **list; |
| 60 | |
| 61 | /* Pointer to next available slot in which to store a pointer to a |
| 62 | partial symbol. */ |
| 63 | |
| 64 | struct partial_symbol **next; |
| 65 | |
| 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. */ |
| 71 | |
| 72 | int size; |
| 73 | }; |
| 74 | |
| 75 | /* Define an array of addresses to accommodate non-contiguous dynamic |
| 76 | loading of modules. This is for use when entering commands, so we |
| 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 |
| 83 | { |
| 84 | /* The number of sections for which address information is |
| 85 | available. */ |
| 86 | size_t num_sections; |
| 87 | /* Sections whose names are file format dependent. */ |
| 88 | struct other_sections |
| 89 | { |
| 90 | CORE_ADDR addr; |
| 91 | char *name; |
| 92 | |
| 93 | /* SECTINDEX must be valid for associated BFD or set to -1. */ |
| 94 | int sectindex; |
| 95 | } other[1]; |
| 96 | }; |
| 97 | |
| 98 | |
| 99 | /* A table listing the load segments in a symfile, and which segment |
| 100 | each BFD section belongs to. */ |
| 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 |
| 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. */ |
| 120 | int *segment_info; |
| 121 | }; |
| 122 | |
| 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 | |
| 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 | |
| 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 | |
| 171 | /* Expand and iterate over each "partial" symbol table in OBJFILE |
| 172 | where the source file is named NAME. |
| 173 | |
| 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. |
| 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, |
| 185 | const char *real_path, |
| 186 | int (*callback) (struct symtab *, |
| 187 | void *), |
| 188 | void *data); |
| 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 |
| 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. */ |
| 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, |
| 216 | const struct section_offsets *new_offsets, |
| 217 | const struct section_offsets *delta); |
| 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 | |
| 227 | /* Read all symbol tables associated with OBJFILE which have |
| 228 | symtab_to_fullname equal to FULLNAME. |
| 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. */ |
| 232 | void (*expand_symtabs_with_fullname) (struct objfile *objfile, |
| 233 | const char *fullname); |
| 234 | |
| 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 |
| 237 | CALLBACK, reading in partial symbol tables as needed. Look |
| 238 | through global symbols if GLOBAL and otherwise static symbols. |
| 239 | Passes NAME, NAMESPACE, and DATA to CALLBACK with each symbol |
| 240 | found. After each block is processed, passes NULL to CALLBACK. |
| 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 |
| 246 | and |
| 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). |
| 249 | CALLBACK returns 0 to indicate that the scan should continue, or |
| 250 | non-zero to indicate that the scan should be terminated. */ |
| 251 | |
| 252 | void (*map_matching_symbols) (struct objfile *, |
| 253 | const char *name, domain_enum namespace, |
| 254 | int global, |
| 255 | int (*callback) (struct block *, |
| 256 | struct symbol *, void *), |
| 257 | void *data, |
| 258 | symbol_compare_ftype *match, |
| 259 | symbol_compare_ftype *ordered_compare); |
| 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 |
| 265 | file is skipped. If FILE_MATCHER is NULL such file is not skipped. |
| 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). |
| 268 | |
| 269 | Otherwise, if KIND does not match this symbol is skipped. |
| 270 | |
| 271 | If even KIND matches, then SYMBOL_MATCHER is called for each symbol |
| 272 | defined in the file. The symbol "search" name and DATA are passed |
| 273 | to SYMBOL_MATCHER. |
| 274 | |
| 275 | If SYMBOL_MATCHER returns zero, then this symbol is skipped. |
| 276 | |
| 277 | Otherwise, this symbol's symbol table is expanded. |
| 278 | |
| 279 | DATA is user data that is passed unmodified to the callback |
| 280 | functions. */ |
| 281 | void (*expand_symtabs_matching) |
| 282 | (struct objfile *objfile, |
| 283 | expand_symtabs_file_matcher_ftype *file_matcher, |
| 284 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, |
| 285 | enum search_domain kind, |
| 286 | void *data); |
| 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, |
| 295 | struct bound_minimal_symbol msymbol, |
| 296 | CORE_ADDR pc, |
| 297 | struct obj_section *section, |
| 298 | int warn_if_readin); |
| 299 | |
| 300 | /* Call a callback for every file defined in OBJFILE whose symtab is |
| 301 | not already read in. FUN is the callback. It is passed the file's |
| 302 | FILENAME, the file's FULLNAME (if need_fullname is non-zero), and |
| 303 | the DATA passed to this function. */ |
| 304 | void (*map_symbol_filenames) (struct objfile *objfile, |
| 305 | symbol_filename_ftype *fun, void *data, |
| 306 | int need_fullname); |
| 307 | }; |
| 308 | |
| 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 *); |
| 319 | }; |
| 320 | |
| 321 | /* Structure to keep track of symbol reading functions for various |
| 322 | object file types. */ |
| 323 | |
| 324 | struct sym_fns |
| 325 | { |
| 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. */ |
| 329 | |
| 330 | void (*sym_new_init) (struct objfile *); |
| 331 | |
| 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. */ |
| 335 | |
| 336 | void (*sym_init) (struct objfile *); |
| 337 | |
| 338 | /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab |
| 339 | (or possibly a symtab). OBJFILE is the objfile struct for the |
| 340 | file we are reading. SYMFILE_FLAGS are the flags passed to |
| 341 | symbol_file_add & co. */ |
| 342 | |
| 343 | void (*sym_read) (struct objfile *, int); |
| 344 | |
| 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 | */ |
| 349 | |
| 350 | void (*sym_read_psymbols) (struct objfile *); |
| 351 | |
| 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. */ |
| 355 | |
| 356 | void (*sym_finish) (struct objfile *); |
| 357 | |
| 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. */ |
| 364 | |
| 365 | void (*sym_offsets) (struct objfile *, const struct section_addr_info *); |
| 366 | |
| 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 | |
| 373 | /* This function should read the linetable from the objfile when |
| 374 | the line table cannot be read while processing the debugging |
| 375 | information. */ |
| 376 | |
| 377 | void (*sym_read_linetable) (struct objfile *); |
| 378 | |
| 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 | |
| 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 | |
| 389 | /* The "quick" (aka partial) symbol functions for this symbol |
| 390 | reader. */ |
| 391 | const struct quick_symbol_functions *qf; |
| 392 | }; |
| 393 | |
| 394 | extern struct section_addr_info * |
| 395 | build_section_addr_info_from_objfile (const struct objfile *objfile); |
| 396 | |
| 397 | extern void relative_addr_info_to_section_offsets |
| 398 | (struct section_offsets *section_offsets, int num_sections, |
| 399 | const struct section_addr_info *addrs); |
| 400 | |
| 401 | extern void addr_info_make_relative (struct section_addr_info *addrs, |
| 402 | bfd *abfd); |
| 403 | |
| 404 | /* The default version of sym_fns.sym_offsets for readers that don't |
| 405 | do anything special. */ |
| 406 | |
| 407 | extern void default_symfile_offsets (struct objfile *objfile, |
| 408 | const struct section_addr_info *); |
| 409 | |
| 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); |
| 414 | |
| 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 | |
| 421 | extern struct symtab *allocate_symtab (const char *, struct objfile *) |
| 422 | ATTRIBUTE_NONNULL (1); |
| 423 | |
| 424 | extern void add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *); |
| 425 | |
| 426 | /* This enum encodes bit-flags passed as ADD_FLAGS parameter to |
| 427 | symbol_file_add, etc. */ |
| 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. */ |
| 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 |
| 444 | }; |
| 445 | |
| 446 | extern void new_symfile_objfile (struct objfile *, int); |
| 447 | |
| 448 | extern struct objfile *symbol_file_add (const char *, int, |
| 449 | struct section_addr_info *, int); |
| 450 | |
| 451 | extern struct objfile *symbol_file_add_from_bfd (bfd *, const char *, int, |
| 452 | struct section_addr_info *, |
| 453 | int, struct objfile *parent); |
| 454 | |
| 455 | extern void symbol_file_add_separate (bfd *, const char *, int, |
| 456 | struct objfile *); |
| 457 | |
| 458 | extern char *find_separate_debug_file_by_debuglink (struct objfile *); |
| 459 | |
| 460 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
| 461 | |
| 462 | extern struct section_addr_info *alloc_section_addr_info (size_t |
| 463 | num_sections); |
| 464 | |
| 465 | /* Build (allocate and populate) a section_addr_info struct from an |
| 466 | existing section table. */ |
| 467 | |
| 468 | extern struct section_addr_info |
| 469 | *build_section_addr_info_from_section_table (const struct target_section |
| 470 | *start, |
| 471 | const struct target_section |
| 472 | *end); |
| 473 | |
| 474 | /* Free all memory allocated by |
| 475 | build_section_addr_info_from_section_table. */ |
| 476 | |
| 477 | extern void free_section_addr_info (struct section_addr_info *); |
| 478 | |
| 479 | |
| 480 | /* Variables */ |
| 481 | |
| 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* |
| 490 | report all the functions that are actually present. */ |
| 491 | |
| 492 | extern int auto_solib_add; |
| 493 | |
| 494 | /* From symfile.c */ |
| 495 | |
| 496 | extern void set_initial_language (void); |
| 497 | |
| 498 | extern void find_lowest_section (bfd *, asection *, void *); |
| 499 | |
| 500 | extern bfd *symfile_bfd_open (const char *); |
| 501 | |
| 502 | extern bfd *gdb_bfd_open_maybe_remote (const char *); |
| 503 | |
| 504 | extern int get_section_index (struct objfile *, char *); |
| 505 | |
| 506 | extern int print_symbol_loading_p (int from_tty, int mainline, int full); |
| 507 | |
| 508 | /* Utility functions for overlay sections: */ |
| 509 | extern enum overlay_debugging_state |
| 510 | { |
| 511 | ovly_off, |
| 512 | ovly_on, |
| 513 | ovly_auto |
| 514 | } overlay_debugging; |
| 515 | extern int overlay_cache_invalid; |
| 516 | |
| 517 | /* Return the "mapped" overlay section containing the PC. */ |
| 518 | extern struct obj_section *find_pc_mapped_section (CORE_ADDR); |
| 519 | |
| 520 | /* Return any overlay section containing the PC (even in its LMA |
| 521 | region). */ |
| 522 | extern struct obj_section *find_pc_overlay (CORE_ADDR); |
| 523 | |
| 524 | /* Return true if the section is an overlay. */ |
| 525 | extern int section_is_overlay (struct obj_section *); |
| 526 | |
| 527 | /* Return true if the overlay section is currently "mapped". */ |
| 528 | extern int section_is_mapped (struct obj_section *); |
| 529 | |
| 530 | /* Return true if pc belongs to section's VMA. */ |
| 531 | extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); |
| 532 | |
| 533 | /* Return true if pc belongs to section's LMA. */ |
| 534 | extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); |
| 535 | |
| 536 | /* Map an address from a section's LMA to its VMA. */ |
| 537 | extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); |
| 538 | |
| 539 | /* Map an address from a section's VMA to its LMA. */ |
| 540 | extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); |
| 541 | |
| 542 | /* Convert an address in an overlay section (force into VMA range). */ |
| 543 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
| 544 | |
| 545 | /* Load symbols from a file. */ |
| 546 | extern void symbol_file_add_main (const char *args, int from_tty); |
| 547 | |
| 548 | /* Clear GDB symbol tables. */ |
| 549 | extern void symbol_file_clear (int from_tty); |
| 550 | |
| 551 | /* Default overlay update function. */ |
| 552 | extern void simple_overlay_update (struct obj_section *); |
| 553 | |
| 554 | extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, |
| 555 | bfd_byte *); |
| 556 | |
| 557 | extern int symfile_map_offsets_to_segments (bfd *, |
| 558 | const struct symfile_segment_data *, |
| 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 | |
| 564 | extern struct cleanup *increment_reading_symtab (void); |
| 565 | |
| 566 | void expand_symtabs_matching (expand_symtabs_file_matcher_ftype *, |
| 567 | expand_symtabs_symbol_matcher_ftype *, |
| 568 | enum search_domain kind, void *data); |
| 569 | |
| 570 | void map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
| 571 | int need_fullname); |
| 572 | |
| 573 | /* From dwarf2read.c */ |
| 574 | |
| 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; |
| 601 | struct dwarf2_section_names macro; |
| 602 | struct dwarf2_section_names str; |
| 603 | struct dwarf2_section_names ranges; |
| 604 | struct dwarf2_section_names types; |
| 605 | struct dwarf2_section_names addr; |
| 606 | struct dwarf2_section_names frame; |
| 607 | struct dwarf2_section_names eh_frame; |
| 608 | struct dwarf2_section_names gdb_index; |
| 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; |
| 612 | }; |
| 613 | |
| 614 | extern int dwarf2_has_info (struct objfile *, |
| 615 | const struct dwarf2_debug_sections *); |
| 616 | |
| 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, |
| 625 | asection **, const gdb_byte **, |
| 626 | bfd_size_type *); |
| 627 | |
| 628 | extern int dwarf2_initialize_objfile (struct objfile *); |
| 629 | extern void dwarf2_build_psymtabs (struct objfile *); |
| 630 | extern void dwarf2_build_frame_info (struct objfile *); |
| 631 | |
| 632 | void dwarf2_free_objfile (struct objfile *); |
| 633 | |
| 634 | /* From mdebugread.c */ |
| 635 | |
| 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 *); |
| 643 | |
| 644 | /* From minidebug.c. */ |
| 645 | |
| 646 | extern bfd *find_separate_debug_file_in_section (struct objfile *); |
| 647 | |
| 648 | #endif /* !defined(SYMFILE_H) */ |