| 1 | /* Definitions for reading symbol files into GDB. |
| 2 | |
| 3 | Copyright (C) 1990-2019 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 | #include "symfile-add-flags.h" |
| 27 | #include "objfile-flags.h" |
| 28 | #include "gdb_bfd.h" |
| 29 | #include "common/function-view.h" |
| 30 | |
| 31 | /* Opaque declarations. */ |
| 32 | struct target_section; |
| 33 | struct objfile; |
| 34 | struct obj_section; |
| 35 | struct obstack; |
| 36 | struct block; |
| 37 | struct value; |
| 38 | struct frame_info; |
| 39 | struct agent_expr; |
| 40 | struct axs_value; |
| 41 | class probe; |
| 42 | |
| 43 | /* Comparison function for symbol look ups. */ |
| 44 | |
| 45 | typedef int (symbol_compare_ftype) (const char *string1, |
| 46 | const char *string2); |
| 47 | |
| 48 | struct other_sections |
| 49 | { |
| 50 | other_sections (CORE_ADDR addr_, std::string &&name_, int sectindex_) |
| 51 | : addr (addr_), |
| 52 | name (std::move (name_)), |
| 53 | sectindex (sectindex_) |
| 54 | { |
| 55 | } |
| 56 | |
| 57 | other_sections (other_sections &&other) = default; |
| 58 | |
| 59 | DISABLE_COPY_AND_ASSIGN (other_sections); |
| 60 | |
| 61 | CORE_ADDR addr; |
| 62 | std::string name; |
| 63 | |
| 64 | /* SECTINDEX must be valid for associated BFD or set to -1. |
| 65 | See syms_from_objfile_1 for an exception to this rule. |
| 66 | */ |
| 67 | int sectindex; |
| 68 | }; |
| 69 | |
| 70 | /* Define an array of addresses to accommodate non-contiguous dynamic |
| 71 | loading of modules. This is for use when entering commands, so we |
| 72 | can keep track of the section names until we read the file and can |
| 73 | map them to bfd sections. This structure is also used by solib.c |
| 74 | to communicate the section addresses in shared objects to |
| 75 | symbol_file_add (). */ |
| 76 | |
| 77 | typedef std::vector<other_sections> section_addr_info; |
| 78 | |
| 79 | /* A table listing the load segments in a symfile, and which segment |
| 80 | each BFD section belongs to. */ |
| 81 | struct symfile_segment_data |
| 82 | { |
| 83 | /* How many segments are present in this file. If there are |
| 84 | two, the text segment is the first one and the data segment |
| 85 | is the second one. */ |
| 86 | int num_segments; |
| 87 | |
| 88 | /* If NUM_SEGMENTS is greater than zero, the original base address |
| 89 | of each segment. */ |
| 90 | CORE_ADDR *segment_bases; |
| 91 | |
| 92 | /* If NUM_SEGMENTS is greater than zero, the memory size of each |
| 93 | segment. */ |
| 94 | CORE_ADDR *segment_sizes; |
| 95 | |
| 96 | /* If NUM_SEGMENTS is greater than zero, this is an array of entries |
| 97 | recording which segment contains each BFD section. |
| 98 | SEGMENT_INFO[I] is S+1 if the I'th BFD section belongs to segment |
| 99 | S, or zero if it is not in any segment. */ |
| 100 | int *segment_info; |
| 101 | }; |
| 102 | |
| 103 | /* Callback for quick_symbol_functions->map_symbol_filenames. */ |
| 104 | |
| 105 | typedef void (symbol_filename_ftype) (const char *filename, |
| 106 | const char *fullname, void *data); |
| 107 | |
| 108 | /* Callback for quick_symbol_functions->expand_symtabs_matching |
| 109 | to match a file name. */ |
| 110 | |
| 111 | typedef bool (expand_symtabs_file_matcher_ftype) (const char *filename, |
| 112 | bool basenames); |
| 113 | |
| 114 | /* Callback for quick_symbol_functions->expand_symtabs_matching |
| 115 | to match a symbol name. */ |
| 116 | |
| 117 | typedef bool (expand_symtabs_symbol_matcher_ftype) (const char *name); |
| 118 | |
| 119 | /* Callback for quick_symbol_functions->expand_symtabs_matching |
| 120 | to be called after a symtab has been expanded. */ |
| 121 | |
| 122 | typedef void (expand_symtabs_exp_notify_ftype) (compunit_symtab *symtab); |
| 123 | |
| 124 | /* The "quick" symbol functions exist so that symbol readers can |
| 125 | avoiding an initial read of all the symbols. For example, symbol |
| 126 | readers might choose to use the "partial symbol table" utilities, |
| 127 | which is one implementation of the quick symbol functions. |
| 128 | |
| 129 | The quick symbol functions are generally opaque: the underlying |
| 130 | representation is hidden from the caller. |
| 131 | |
| 132 | In general, these functions should only look at whatever special |
| 133 | index the symbol reader creates -- looking through the symbol |
| 134 | tables themselves is handled by generic code. If a function is |
| 135 | defined as returning a "symbol table", this means that the function |
| 136 | should only return a newly-created symbol table; it should not |
| 137 | examine pre-existing ones. |
| 138 | |
| 139 | The exact list of functions here was determined in an ad hoc way |
| 140 | based on gdb's history. */ |
| 141 | |
| 142 | struct quick_symbol_functions |
| 143 | { |
| 144 | /* Return true if this objfile has any "partial" symbols |
| 145 | available. */ |
| 146 | int (*has_symbols) (struct objfile *objfile); |
| 147 | |
| 148 | /* Return the symbol table for the "last" file appearing in |
| 149 | OBJFILE. */ |
| 150 | struct symtab *(*find_last_source_symtab) (struct objfile *objfile); |
| 151 | |
| 152 | /* Forget all cached full file names for OBJFILE. */ |
| 153 | void (*forget_cached_source_info) (struct objfile *objfile); |
| 154 | |
| 155 | /* Expand and iterate over each "partial" symbol table in OBJFILE |
| 156 | where the source file is named NAME. |
| 157 | |
| 158 | If NAME is not absolute, a match after a '/' in the symbol table's |
| 159 | file name will also work, REAL_PATH is NULL then. If NAME is |
| 160 | absolute then REAL_PATH is non-NULL absolute file name as resolved |
| 161 | via gdb_realpath from NAME. |
| 162 | |
| 163 | If a match is found, the "partial" symbol table is expanded. |
| 164 | Then, this calls iterate_over_some_symtabs (or equivalent) over |
| 165 | all newly-created symbol tables, passing CALLBACK to it. |
| 166 | The result of this call is returned. */ |
| 167 | bool (*map_symtabs_matching_filename) |
| 168 | (struct objfile *objfile, const char *name, const char *real_path, |
| 169 | gdb::function_view<bool (symtab *)> callback); |
| 170 | |
| 171 | /* Check to see if the symbol is defined in a "partial" symbol table |
| 172 | of OBJFILE. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, |
| 173 | depending on whether we want to search global symbols or static |
| 174 | symbols. NAME is the name of the symbol to look for. DOMAIN |
| 175 | indicates what sort of symbol to search for. |
| 176 | |
| 177 | Returns the newly-expanded compunit in which the symbol is |
| 178 | defined, or NULL if no such symbol table exists. If OBJFILE |
| 179 | contains !TYPE_OPAQUE symbol prefer its compunit. If it contains |
| 180 | only TYPE_OPAQUE symbol(s), return at least that compunit. */ |
| 181 | struct compunit_symtab *(*lookup_symbol) (struct objfile *objfile, |
| 182 | int block_index, const char *name, |
| 183 | domain_enum domain); |
| 184 | |
| 185 | /* Print statistics about any indices loaded for OBJFILE. The |
| 186 | statistics should be printed to gdb_stdout. This is used for |
| 187 | "maint print statistics". */ |
| 188 | void (*print_stats) (struct objfile *objfile); |
| 189 | |
| 190 | /* Dump any indices loaded for OBJFILE. The dump should go to |
| 191 | gdb_stdout. This is used for "maint print objfiles". */ |
| 192 | void (*dump) (struct objfile *objfile); |
| 193 | |
| 194 | /* Find all the symbols in OBJFILE named FUNC_NAME, and ensure that |
| 195 | the corresponding symbol tables are loaded. */ |
| 196 | void (*expand_symtabs_for_function) (struct objfile *objfile, |
| 197 | const char *func_name); |
| 198 | |
| 199 | /* Read all symbol tables associated with OBJFILE. */ |
| 200 | void (*expand_all_symtabs) (struct objfile *objfile); |
| 201 | |
| 202 | /* Read all symbol tables associated with OBJFILE which have |
| 203 | symtab_to_fullname equal to FULLNAME. |
| 204 | This is for the purposes of examining code only, e.g., expand_line_sal. |
| 205 | The routine may ignore debug info that is known to not be useful with |
| 206 | code, e.g., DW_TAG_type_unit for dwarf debug info. */ |
| 207 | void (*expand_symtabs_with_fullname) (struct objfile *objfile, |
| 208 | const char *fullname); |
| 209 | |
| 210 | /* Find global or static symbols in all tables that are in DOMAIN |
| 211 | and for which MATCH (symbol name, NAME) == 0, passing each to |
| 212 | CALLBACK, reading in partial symbol tables as needed. Look |
| 213 | through global symbols if GLOBAL and otherwise static symbols. |
| 214 | Passes NAME, NAMESPACE, and DATA to CALLBACK with each symbol |
| 215 | found. After each block is processed, passes NULL to CALLBACK. |
| 216 | MATCH must be weaker than strcmp_iw_ordered in the sense that |
| 217 | strcmp_iw_ordered(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE, |
| 218 | if non-null, must be an ordering relation compatible with |
| 219 | strcmp_iw_ordered in the sense that |
| 220 | strcmp_iw_ordered(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0 |
| 221 | and |
| 222 | strcmp_iw_ordered(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0 |
| 223 | (allowing strcmp_iw_ordered(x,y) < 0 while ORDERED_COMPARE(x, y) == 0). |
| 224 | CALLBACK returns 0 to indicate that the scan should continue, or |
| 225 | non-zero to indicate that the scan should be terminated. */ |
| 226 | |
| 227 | void (*map_matching_symbols) (struct objfile *, |
| 228 | const char *name, domain_enum domain, |
| 229 | int global, |
| 230 | int (*callback) (const struct block *, |
| 231 | struct symbol *, void *), |
| 232 | void *data, |
| 233 | symbol_name_match_type match, |
| 234 | symbol_compare_ftype *ordered_compare); |
| 235 | |
| 236 | /* Expand all symbol tables in OBJFILE matching some criteria. |
| 237 | |
| 238 | FILE_MATCHER is called for each file in OBJFILE. The file name |
| 239 | is passed to it. If the matcher returns false, the file is |
| 240 | skipped. If FILE_MATCHER is NULL the file is not skipped. If |
| 241 | BASENAMES is true the matcher should consider only file base |
| 242 | names (the passed file name is already only the lbasename'd |
| 243 | part). |
| 244 | |
| 245 | Otherwise, if KIND does not match, this symbol is skipped. |
| 246 | |
| 247 | If even KIND matches, SYMBOL_MATCHER is called for each symbol |
| 248 | defined in the file. The symbol "search" name is passed to |
| 249 | SYMBOL_MATCHER. |
| 250 | |
| 251 | If SYMBOL_MATCHER returns false, then the symbol is skipped. |
| 252 | |
| 253 | Otherwise, the symbol's symbol table is expanded. */ |
| 254 | void (*expand_symtabs_matching) |
| 255 | (struct objfile *objfile, |
| 256 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
| 257 | const lookup_name_info &lookup_name, |
| 258 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
| 259 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, |
| 260 | enum search_domain kind); |
| 261 | |
| 262 | /* Return the comp unit from OBJFILE that contains PC and |
| 263 | SECTION. Return NULL if there is no such compunit. This |
| 264 | should return the compunit that contains a symbol whose |
| 265 | address exactly matches PC, or, if there is no exact match, the |
| 266 | compunit that contains a symbol whose address is closest to |
| 267 | PC. */ |
| 268 | struct compunit_symtab *(*find_pc_sect_compunit_symtab) |
| 269 | (struct objfile *objfile, struct bound_minimal_symbol msymbol, |
| 270 | CORE_ADDR pc, struct obj_section *section, int warn_if_readin); |
| 271 | |
| 272 | /* Return the comp unit from OBJFILE that contains a symbol at |
| 273 | ADDRESS. Return NULL if there is no such comp unit. Unlike |
| 274 | find_pc_sect_compunit_symtab, any sort of symbol (not just text |
| 275 | symbols) can be considered, and only exact address matches are |
| 276 | considered. This pointer may be NULL. */ |
| 277 | struct compunit_symtab *(*find_compunit_symtab_by_address) |
| 278 | (struct objfile *objfile, CORE_ADDR address); |
| 279 | |
| 280 | /* Call a callback for every file defined in OBJFILE whose symtab is |
| 281 | not already read in. FUN is the callback. It is passed the file's |
| 282 | FILENAME, the file's FULLNAME (if need_fullname is non-zero), and |
| 283 | the DATA passed to this function. */ |
| 284 | void (*map_symbol_filenames) (struct objfile *objfile, |
| 285 | symbol_filename_ftype *fun, void *data, |
| 286 | int need_fullname); |
| 287 | }; |
| 288 | |
| 289 | /* Structure of functions used for probe support. If one of these functions |
| 290 | is provided, all must be. */ |
| 291 | |
| 292 | struct sym_probe_fns |
| 293 | { |
| 294 | /* If non-NULL, return a reference to vector of probe objects. */ |
| 295 | const std::vector<std::unique_ptr<probe>> &(*sym_get_probes) |
| 296 | (struct objfile *); |
| 297 | }; |
| 298 | |
| 299 | /* Structure to keep track of symbol reading functions for various |
| 300 | object file types. */ |
| 301 | |
| 302 | struct sym_fns |
| 303 | { |
| 304 | /* Initializes anything that is global to the entire symbol table. |
| 305 | It is called during symbol_file_add, when we begin debugging an |
| 306 | entirely new program. */ |
| 307 | |
| 308 | void (*sym_new_init) (struct objfile *); |
| 309 | |
| 310 | /* Reads any initial information from a symbol file, and initializes |
| 311 | the struct sym_fns SF in preparation for sym_read(). It is |
| 312 | called every time we read a symbol file for any reason. */ |
| 313 | |
| 314 | void (*sym_init) (struct objfile *); |
| 315 | |
| 316 | /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab |
| 317 | (or possibly a symtab). OBJFILE is the objfile struct for the |
| 318 | file we are reading. SYMFILE_FLAGS are the flags passed to |
| 319 | symbol_file_add & co. */ |
| 320 | |
| 321 | void (*sym_read) (struct objfile *, symfile_add_flags); |
| 322 | |
| 323 | /* Read the partial symbols for an objfile. This may be NULL, in which case |
| 324 | gdb has to check other ways if this objfile has any symbols. This may |
| 325 | only be non-NULL if the objfile actually does have debuginfo available. |
| 326 | */ |
| 327 | |
| 328 | void (*sym_read_psymbols) (struct objfile *); |
| 329 | |
| 330 | /* Called when we are finished with an objfile. Should do all |
| 331 | cleanup that is specific to the object file format for the |
| 332 | particular objfile. */ |
| 333 | |
| 334 | void (*sym_finish) (struct objfile *); |
| 335 | |
| 336 | |
| 337 | /* This function produces a file-dependent section_offsets |
| 338 | structure, allocated in the objfile's storage. |
| 339 | |
| 340 | The section_addr_info structure contains the offset of loadable and |
| 341 | allocated sections, relative to the absolute offsets found in the BFD. */ |
| 342 | |
| 343 | void (*sym_offsets) (struct objfile *, const section_addr_info &); |
| 344 | |
| 345 | /* This function produces a format-independent description of |
| 346 | the segments of ABFD. Each segment is a unit of the file |
| 347 | which may be relocated independently. */ |
| 348 | |
| 349 | struct symfile_segment_data *(*sym_segments) (bfd *abfd); |
| 350 | |
| 351 | /* This function should read the linetable from the objfile when |
| 352 | the line table cannot be read while processing the debugging |
| 353 | information. */ |
| 354 | |
| 355 | void (*sym_read_linetable) (struct objfile *); |
| 356 | |
| 357 | /* Relocate the contents of a debug section SECTP. The |
| 358 | contents are stored in BUF if it is non-NULL, or returned in a |
| 359 | malloc'd buffer otherwise. */ |
| 360 | |
| 361 | bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf); |
| 362 | |
| 363 | /* If non-NULL, this objfile has probe support, and all the probe |
| 364 | functions referred to here will be non-NULL. */ |
| 365 | const struct sym_probe_fns *sym_probe_fns; |
| 366 | |
| 367 | /* The "quick" (aka partial) symbol functions for this symbol |
| 368 | reader. */ |
| 369 | const struct quick_symbol_functions *qf; |
| 370 | }; |
| 371 | |
| 372 | extern section_addr_info |
| 373 | build_section_addr_info_from_objfile (const struct objfile *objfile); |
| 374 | |
| 375 | extern void relative_addr_info_to_section_offsets |
| 376 | (struct section_offsets *section_offsets, int num_sections, |
| 377 | const section_addr_info &addrs); |
| 378 | |
| 379 | extern void addr_info_make_relative (section_addr_info *addrs, |
| 380 | bfd *abfd); |
| 381 | |
| 382 | /* The default version of sym_fns.sym_offsets for readers that don't |
| 383 | do anything special. */ |
| 384 | |
| 385 | extern void default_symfile_offsets (struct objfile *objfile, |
| 386 | const section_addr_info &); |
| 387 | |
| 388 | /* The default version of sym_fns.sym_segments for readers that don't |
| 389 | do anything special. */ |
| 390 | |
| 391 | extern struct symfile_segment_data *default_symfile_segments (bfd *abfd); |
| 392 | |
| 393 | /* The default version of sym_fns.sym_relocate for readers that don't |
| 394 | do anything special. */ |
| 395 | |
| 396 | extern bfd_byte *default_symfile_relocate (struct objfile *objfile, |
| 397 | asection *sectp, bfd_byte *buf); |
| 398 | |
| 399 | extern struct symtab *allocate_symtab (struct compunit_symtab *, const char *) |
| 400 | ATTRIBUTE_NONNULL (1); |
| 401 | |
| 402 | extern struct compunit_symtab *allocate_compunit_symtab (struct objfile *, |
| 403 | const char *) |
| 404 | ATTRIBUTE_NONNULL (1); |
| 405 | |
| 406 | extern void add_compunit_symtab_to_objfile (struct compunit_symtab *cu); |
| 407 | |
| 408 | extern void add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *); |
| 409 | |
| 410 | extern void clear_symtab_users (symfile_add_flags add_flags); |
| 411 | |
| 412 | extern enum language deduce_language_from_filename (const char *); |
| 413 | |
| 414 | /* Map the filename extension EXT to the language LANG. Any previous |
| 415 | association of EXT will be removed. EXT will be copied by this |
| 416 | function. */ |
| 417 | extern void add_filename_language (const char *ext, enum language lang); |
| 418 | |
| 419 | extern struct objfile *symbol_file_add (const char *, symfile_add_flags, |
| 420 | section_addr_info *, objfile_flags); |
| 421 | |
| 422 | extern struct objfile *symbol_file_add_from_bfd (bfd *, const char *, symfile_add_flags, |
| 423 | section_addr_info *, |
| 424 | objfile_flags, struct objfile *parent); |
| 425 | |
| 426 | extern void symbol_file_add_separate (bfd *, const char *, symfile_add_flags, |
| 427 | struct objfile *); |
| 428 | |
| 429 | extern std::string find_separate_debug_file_by_debuglink (struct objfile *); |
| 430 | |
| 431 | /* Build (allocate and populate) a section_addr_info struct from an |
| 432 | existing section table. */ |
| 433 | |
| 434 | extern section_addr_info |
| 435 | build_section_addr_info_from_section_table (const struct target_section |
| 436 | *start, |
| 437 | const struct target_section |
| 438 | *end); |
| 439 | |
| 440 | /* Variables */ |
| 441 | |
| 442 | /* If non-zero, shared library symbols will be added automatically |
| 443 | when the inferior is created, new libraries are loaded, or when |
| 444 | attaching to the inferior. This is almost always what users will |
| 445 | want to have happen; but for very large programs, the startup time |
| 446 | will be excessive, and so if this is a problem, the user can clear |
| 447 | this flag and then add the shared library symbols as needed. Note |
| 448 | that there is a potential for confusion, since if the shared |
| 449 | library symbols are not loaded, commands like "info fun" will *not* |
| 450 | report all the functions that are actually present. */ |
| 451 | |
| 452 | extern int auto_solib_add; |
| 453 | |
| 454 | /* From symfile.c */ |
| 455 | |
| 456 | extern void set_initial_language (void); |
| 457 | |
| 458 | extern void find_lowest_section (bfd *, asection *, void *); |
| 459 | |
| 460 | extern gdb_bfd_ref_ptr symfile_bfd_open (const char *); |
| 461 | |
| 462 | extern int get_section_index (struct objfile *, const char *); |
| 463 | |
| 464 | extern int print_symbol_loading_p (int from_tty, int mainline, int full); |
| 465 | |
| 466 | /* Utility functions for overlay sections: */ |
| 467 | extern enum overlay_debugging_state |
| 468 | { |
| 469 | ovly_off, |
| 470 | ovly_on, |
| 471 | ovly_auto |
| 472 | } overlay_debugging; |
| 473 | extern int overlay_cache_invalid; |
| 474 | |
| 475 | /* Return the "mapped" overlay section containing the PC. */ |
| 476 | extern struct obj_section *find_pc_mapped_section (CORE_ADDR); |
| 477 | |
| 478 | /* Return any overlay section containing the PC (even in its LMA |
| 479 | region). */ |
| 480 | extern struct obj_section *find_pc_overlay (CORE_ADDR); |
| 481 | |
| 482 | /* Return true if the section is an overlay. */ |
| 483 | extern int section_is_overlay (struct obj_section *); |
| 484 | |
| 485 | /* Return true if the overlay section is currently "mapped". */ |
| 486 | extern int section_is_mapped (struct obj_section *); |
| 487 | |
| 488 | /* Return true if pc belongs to section's VMA. */ |
| 489 | extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); |
| 490 | |
| 491 | /* Return true if pc belongs to section's LMA. */ |
| 492 | extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); |
| 493 | |
| 494 | /* Map an address from a section's LMA to its VMA. */ |
| 495 | extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); |
| 496 | |
| 497 | /* Map an address from a section's VMA to its LMA. */ |
| 498 | extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); |
| 499 | |
| 500 | /* Convert an address in an overlay section (force into VMA range). */ |
| 501 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
| 502 | |
| 503 | /* Load symbols from a file. */ |
| 504 | extern void symbol_file_add_main (const char *args, |
| 505 | symfile_add_flags add_flags); |
| 506 | |
| 507 | /* Clear GDB symbol tables. */ |
| 508 | extern void symbol_file_clear (int from_tty); |
| 509 | |
| 510 | /* Default overlay update function. */ |
| 511 | extern void simple_overlay_update (struct obj_section *); |
| 512 | |
| 513 | extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, |
| 514 | bfd_byte *); |
| 515 | |
| 516 | extern int symfile_map_offsets_to_segments (bfd *, |
| 517 | const struct symfile_segment_data *, |
| 518 | struct section_offsets *, |
| 519 | int, const CORE_ADDR *); |
| 520 | struct symfile_segment_data *get_symfile_segment_data (bfd *abfd); |
| 521 | void free_symfile_segment_data (struct symfile_segment_data *data); |
| 522 | |
| 523 | extern scoped_restore_tmpl<int> increment_reading_symtab (void); |
| 524 | |
| 525 | void expand_symtabs_matching |
| 526 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
| 527 | const lookup_name_info &lookup_name, |
| 528 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
| 529 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, |
| 530 | enum search_domain kind); |
| 531 | |
| 532 | void map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
| 533 | int need_fullname); |
| 534 | |
| 535 | /* From dwarf2read.c */ |
| 536 | |
| 537 | /* Names for a dwarf2 debugging section. The field NORMAL is the normal |
| 538 | section name (usually from the DWARF standard), while the field COMPRESSED |
| 539 | is the name of compressed sections. If your object file format doesn't |
| 540 | support compressed sections, the field COMPRESSED can be NULL. Likewise, |
| 541 | the debugging section is not supported, the field NORMAL can be NULL too. |
| 542 | It doesn't make sense to have a NULL NORMAL field but a non-NULL COMPRESSED |
| 543 | field. */ |
| 544 | |
| 545 | struct dwarf2_section_names { |
| 546 | const char *normal; |
| 547 | const char *compressed; |
| 548 | }; |
| 549 | |
| 550 | /* List of names for dward2 debugging sections. Also most object file formats |
| 551 | use the standardized (ie ELF) names, some (eg XCOFF) have customized names |
| 552 | due to restrictions. |
| 553 | The table for the standard names is defined in dwarf2read.c. Please |
| 554 | update all instances of dwarf2_debug_sections if you add a field to this |
| 555 | structure. It is always safe to use { NULL, NULL } in this case. */ |
| 556 | |
| 557 | struct dwarf2_debug_sections { |
| 558 | struct dwarf2_section_names info; |
| 559 | struct dwarf2_section_names abbrev; |
| 560 | struct dwarf2_section_names line; |
| 561 | struct dwarf2_section_names loc; |
| 562 | struct dwarf2_section_names loclists; |
| 563 | struct dwarf2_section_names macinfo; |
| 564 | struct dwarf2_section_names macro; |
| 565 | struct dwarf2_section_names str; |
| 566 | struct dwarf2_section_names line_str; |
| 567 | struct dwarf2_section_names ranges; |
| 568 | struct dwarf2_section_names rnglists; |
| 569 | struct dwarf2_section_names types; |
| 570 | struct dwarf2_section_names addr; |
| 571 | struct dwarf2_section_names frame; |
| 572 | struct dwarf2_section_names eh_frame; |
| 573 | struct dwarf2_section_names gdb_index; |
| 574 | struct dwarf2_section_names debug_names; |
| 575 | struct dwarf2_section_names debug_aranges; |
| 576 | /* This field has no meaning, but exists solely to catch changes to |
| 577 | this structure which are not reflected in some instance. */ |
| 578 | int sentinel; |
| 579 | }; |
| 580 | |
| 581 | extern int dwarf2_has_info (struct objfile *, |
| 582 | const struct dwarf2_debug_sections *); |
| 583 | |
| 584 | /* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */ |
| 585 | enum dwarf2_section_enum { |
| 586 | DWARF2_DEBUG_FRAME, |
| 587 | DWARF2_EH_FRAME |
| 588 | }; |
| 589 | |
| 590 | extern void dwarf2_get_section_info (struct objfile *, |
| 591 | enum dwarf2_section_enum, |
| 592 | asection **, const gdb_byte **, |
| 593 | bfd_size_type *); |
| 594 | |
| 595 | /* A DWARF names index variant. */ |
| 596 | enum class dw_index_kind |
| 597 | { |
| 598 | /* GDB's own .gdb_index format. */ |
| 599 | GDB_INDEX, |
| 600 | |
| 601 | /* DWARF5 .debug_names. */ |
| 602 | DEBUG_NAMES, |
| 603 | }; |
| 604 | |
| 605 | /* Initialize for reading DWARF for OBJFILE. Return false if this |
| 606 | file will use psymtabs, or true if using an index, in which case |
| 607 | *INDEX_KIND is set to the index variant in use. */ |
| 608 | extern bool dwarf2_initialize_objfile (struct objfile *objfile, |
| 609 | dw_index_kind *index_kind); |
| 610 | |
| 611 | extern void dwarf2_build_psymtabs (struct objfile *); |
| 612 | extern void dwarf2_build_frame_info (struct objfile *); |
| 613 | |
| 614 | void dwarf2_free_objfile (struct objfile *); |
| 615 | |
| 616 | /* From minidebug.c. */ |
| 617 | |
| 618 | extern gdb_bfd_ref_ptr find_separate_debug_file_in_section (struct objfile *); |
| 619 | |
| 620 | /* True if we are printing debug output about separate debug info files. */ |
| 621 | |
| 622 | extern int separate_debug_file_debug; |
| 623 | |
| 624 | #endif /* !defined(SYMFILE_H) */ |