| 1 | /* Partial symbol tables. |
| 2 | |
| 3 | Copyright (C) 2009-2014 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 | #include "defs.h" |
| 21 | #include "symtab.h" |
| 22 | #include "psympriv.h" |
| 23 | #include "objfiles.h" |
| 24 | #include "block.h" |
| 25 | #include "filenames.h" |
| 26 | #include "source.h" |
| 27 | #include "addrmap.h" |
| 28 | #include "gdbtypes.h" |
| 29 | #include "bcache.h" |
| 30 | #include "ui-out.h" |
| 31 | #include "command.h" |
| 32 | #include "readline/readline.h" |
| 33 | #include "gdb_regex.h" |
| 34 | #include "dictionary.h" |
| 35 | #include "language.h" |
| 36 | #include "cp-support.h" |
| 37 | #include "gdbcmd.h" |
| 38 | |
| 39 | #ifndef DEV_TTY |
| 40 | #define DEV_TTY "/dev/tty" |
| 41 | #endif |
| 42 | |
| 43 | struct psymbol_bcache |
| 44 | { |
| 45 | struct bcache *bcache; |
| 46 | }; |
| 47 | |
| 48 | static struct partial_symbol *match_partial_symbol (struct objfile *, |
| 49 | struct partial_symtab *, |
| 50 | int, |
| 51 | const char *, domain_enum, |
| 52 | symbol_compare_ftype *, |
| 53 | symbol_compare_ftype *); |
| 54 | |
| 55 | static struct partial_symbol *lookup_partial_symbol (struct objfile *, |
| 56 | struct partial_symtab *, |
| 57 | const char *, int, |
| 58 | domain_enum); |
| 59 | |
| 60 | static const char *psymtab_to_fullname (struct partial_symtab *ps); |
| 61 | |
| 62 | static struct partial_symbol *find_pc_sect_psymbol (struct objfile *, |
| 63 | struct partial_symtab *, |
| 64 | CORE_ADDR, |
| 65 | struct obj_section *); |
| 66 | |
| 67 | static void fixup_psymbol_section (struct partial_symbol *psym, |
| 68 | struct objfile *objfile); |
| 69 | |
| 70 | static struct symtab *psymtab_to_symtab (struct objfile *objfile, |
| 71 | struct partial_symtab *pst); |
| 72 | |
| 73 | /* Ensure that the partial symbols for OBJFILE have been loaded. This |
| 74 | function always returns its argument, as a convenience. */ |
| 75 | |
| 76 | struct objfile * |
| 77 | require_partial_symbols (struct objfile *objfile, int verbose) |
| 78 | { |
| 79 | if ((objfile->flags & OBJF_PSYMTABS_READ) == 0) |
| 80 | { |
| 81 | objfile->flags |= OBJF_PSYMTABS_READ; |
| 82 | |
| 83 | if (objfile->sf->sym_read_psymbols) |
| 84 | { |
| 85 | if (verbose) |
| 86 | { |
| 87 | printf_unfiltered (_("Reading symbols from %s..."), |
| 88 | objfile_name (objfile)); |
| 89 | gdb_flush (gdb_stdout); |
| 90 | } |
| 91 | (*objfile->sf->sym_read_psymbols) (objfile); |
| 92 | if (verbose) |
| 93 | { |
| 94 | if (!objfile_has_symbols (objfile)) |
| 95 | { |
| 96 | wrap_here (""); |
| 97 | printf_unfiltered (_("(no debugging symbols found)...")); |
| 98 | wrap_here (""); |
| 99 | } |
| 100 | |
| 101 | printf_unfiltered (_("done.\n")); |
| 102 | } |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | return objfile; |
| 107 | } |
| 108 | |
| 109 | /* Traverse all psymtabs in one objfile, requiring that the psymtabs |
| 110 | be read in. */ |
| 111 | |
| 112 | #define ALL_OBJFILE_PSYMTABS_REQUIRED(objfile, p) \ |
| 113 | for ((p) = require_partial_symbols (objfile, 1)->psymtabs; \ |
| 114 | (p) != NULL; \ |
| 115 | (p) = (p)->next) |
| 116 | |
| 117 | /* We want to make sure this file always requires psymtabs. */ |
| 118 | |
| 119 | #undef ALL_OBJFILE_PSYMTABS |
| 120 | |
| 121 | /* Traverse all psymtabs in all objfiles. */ |
| 122 | |
| 123 | #define ALL_PSYMTABS(objfile, p) \ |
| 124 | ALL_OBJFILES (objfile) \ |
| 125 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p) |
| 126 | |
| 127 | /* Helper function for partial_map_symtabs_matching_filename that |
| 128 | expands the symtabs and calls the iterator. */ |
| 129 | |
| 130 | static int |
| 131 | partial_map_expand_apply (struct objfile *objfile, |
| 132 | const char *name, |
| 133 | const char *real_path, |
| 134 | struct partial_symtab *pst, |
| 135 | int (*callback) (struct symtab *, void *), |
| 136 | void *data) |
| 137 | { |
| 138 | struct symtab *last_made = objfile->symtabs; |
| 139 | |
| 140 | /* Shared psymtabs should never be seen here. Instead they should |
| 141 | be handled properly by the caller. */ |
| 142 | gdb_assert (pst->user == NULL); |
| 143 | |
| 144 | /* Don't visit already-expanded psymtabs. */ |
| 145 | if (pst->readin) |
| 146 | return 0; |
| 147 | |
| 148 | /* This may expand more than one symtab, and we want to iterate over |
| 149 | all of them. */ |
| 150 | psymtab_to_symtab (objfile, pst); |
| 151 | |
| 152 | return iterate_over_some_symtabs (name, real_path, callback, data, |
| 153 | objfile->symtabs, last_made); |
| 154 | } |
| 155 | |
| 156 | /* Implementation of the map_symtabs_matching_filename method. */ |
| 157 | |
| 158 | static int |
| 159 | partial_map_symtabs_matching_filename (struct objfile *objfile, |
| 160 | const char *name, |
| 161 | const char *real_path, |
| 162 | int (*callback) (struct symtab *, |
| 163 | void *), |
| 164 | void *data) |
| 165 | { |
| 166 | struct partial_symtab *pst; |
| 167 | const char *name_basename = lbasename (name); |
| 168 | |
| 169 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst) |
| 170 | { |
| 171 | /* We can skip shared psymtabs here, because any file name will be |
| 172 | attached to the unshared psymtab. */ |
| 173 | if (pst->user != NULL) |
| 174 | continue; |
| 175 | |
| 176 | /* Anonymous psymtabs don't have a file name. */ |
| 177 | if (pst->anonymous) |
| 178 | continue; |
| 179 | |
| 180 | if (compare_filenames_for_search (pst->filename, name)) |
| 181 | { |
| 182 | if (partial_map_expand_apply (objfile, name, real_path, |
| 183 | pst, callback, data)) |
| 184 | return 1; |
| 185 | continue; |
| 186 | } |
| 187 | |
| 188 | /* Before we invoke realpath, which can get expensive when many |
| 189 | files are involved, do a quick comparison of the basenames. */ |
| 190 | if (! basenames_may_differ |
| 191 | && FILENAME_CMP (name_basename, lbasename (pst->filename)) != 0) |
| 192 | continue; |
| 193 | |
| 194 | if (compare_filenames_for_search (psymtab_to_fullname (pst), name)) |
| 195 | { |
| 196 | if (partial_map_expand_apply (objfile, name, real_path, |
| 197 | pst, callback, data)) |
| 198 | return 1; |
| 199 | continue; |
| 200 | } |
| 201 | |
| 202 | /* If the user gave us an absolute path, try to find the file in |
| 203 | this symtab and use its absolute path. */ |
| 204 | if (real_path != NULL) |
| 205 | { |
| 206 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
| 207 | gdb_assert (IS_ABSOLUTE_PATH (name)); |
| 208 | if (filename_cmp (psymtab_to_fullname (pst), real_path) == 0) |
| 209 | { |
| 210 | if (partial_map_expand_apply (objfile, name, real_path, |
| 211 | pst, callback, data)) |
| 212 | return 1; |
| 213 | continue; |
| 214 | } |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | return 0; |
| 219 | } |
| 220 | |
| 221 | /* Find which partial symtab contains PC and SECTION starting at psymtab PST. |
| 222 | We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */ |
| 223 | |
| 224 | static struct partial_symtab * |
| 225 | find_pc_sect_psymtab_closer (struct objfile *objfile, |
| 226 | CORE_ADDR pc, struct obj_section *section, |
| 227 | struct partial_symtab *pst, |
| 228 | struct bound_minimal_symbol msymbol) |
| 229 | { |
| 230 | struct partial_symtab *tpst; |
| 231 | struct partial_symtab *best_pst = pst; |
| 232 | CORE_ADDR best_addr = pst->textlow; |
| 233 | |
| 234 | gdb_assert (!pst->psymtabs_addrmap_supported); |
| 235 | |
| 236 | /* An objfile that has its functions reordered might have |
| 237 | many partial symbol tables containing the PC, but |
| 238 | we want the partial symbol table that contains the |
| 239 | function containing the PC. */ |
| 240 | if (!(objfile->flags & OBJF_REORDERED) && |
| 241 | section == 0) /* Can't validate section this way. */ |
| 242 | return pst; |
| 243 | |
| 244 | if (msymbol.minsym == NULL) |
| 245 | return (pst); |
| 246 | |
| 247 | /* The code range of partial symtabs sometimes overlap, so, in |
| 248 | the loop below, we need to check all partial symtabs and |
| 249 | find the one that fits better for the given PC address. We |
| 250 | select the partial symtab that contains a symbol whose |
| 251 | address is closest to the PC address. By closest we mean |
| 252 | that find_pc_sect_symbol returns the symbol with address |
| 253 | that is closest and still less than the given PC. */ |
| 254 | for (tpst = pst; tpst != NULL; tpst = tpst->next) |
| 255 | { |
| 256 | if (pc >= tpst->textlow && pc < tpst->texthigh) |
| 257 | { |
| 258 | struct partial_symbol *p; |
| 259 | CORE_ADDR this_addr; |
| 260 | |
| 261 | /* NOTE: This assumes that every psymbol has a |
| 262 | corresponding msymbol, which is not necessarily |
| 263 | true; the debug info might be much richer than the |
| 264 | object's symbol table. */ |
| 265 | p = find_pc_sect_psymbol (objfile, tpst, pc, section); |
| 266 | if (p != NULL |
| 267 | && SYMBOL_VALUE_ADDRESS (p) |
| 268 | == BMSYMBOL_VALUE_ADDRESS (msymbol)) |
| 269 | return tpst; |
| 270 | |
| 271 | /* Also accept the textlow value of a psymtab as a |
| 272 | "symbol", to provide some support for partial |
| 273 | symbol tables with line information but no debug |
| 274 | symbols (e.g. those produced by an assembler). */ |
| 275 | if (p != NULL) |
| 276 | this_addr = SYMBOL_VALUE_ADDRESS (p); |
| 277 | else |
| 278 | this_addr = tpst->textlow; |
| 279 | |
| 280 | /* Check whether it is closer than our current |
| 281 | BEST_ADDR. Since this symbol address is |
| 282 | necessarily lower or equal to PC, the symbol closer |
| 283 | to PC is the symbol which address is the highest. |
| 284 | This way we return the psymtab which contains such |
| 285 | best match symbol. This can help in cases where the |
| 286 | symbol information/debuginfo is not complete, like |
| 287 | for instance on IRIX6 with gcc, where no debug info |
| 288 | is emitted for statics. (See also the nodebug.exp |
| 289 | testcase.) */ |
| 290 | if (this_addr > best_addr) |
| 291 | { |
| 292 | best_addr = this_addr; |
| 293 | best_pst = tpst; |
| 294 | } |
| 295 | } |
| 296 | } |
| 297 | return best_pst; |
| 298 | } |
| 299 | |
| 300 | /* Find which partial symtab contains PC and SECTION. Return 0 if |
| 301 | none. We return the psymtab that contains a symbol whose address |
| 302 | exactly matches PC, or, if we cannot find an exact match, the |
| 303 | psymtab that contains a symbol whose address is closest to PC. */ |
| 304 | static struct partial_symtab * |
| 305 | find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc, |
| 306 | struct obj_section *section, |
| 307 | struct bound_minimal_symbol msymbol) |
| 308 | { |
| 309 | struct partial_symtab *pst; |
| 310 | |
| 311 | /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity |
| 312 | than the later used TEXTLOW/TEXTHIGH one. */ |
| 313 | |
| 314 | if (objfile->psymtabs_addrmap != NULL) |
| 315 | { |
| 316 | pst = addrmap_find (objfile->psymtabs_addrmap, pc); |
| 317 | if (pst != NULL) |
| 318 | { |
| 319 | /* FIXME: addrmaps currently do not handle overlayed sections, |
| 320 | so fall back to the non-addrmap case if we're debugging |
| 321 | overlays and the addrmap returned the wrong section. */ |
| 322 | if (overlay_debugging && msymbol.minsym && section) |
| 323 | { |
| 324 | struct partial_symbol *p; |
| 325 | |
| 326 | /* NOTE: This assumes that every psymbol has a |
| 327 | corresponding msymbol, which is not necessarily |
| 328 | true; the debug info might be much richer than the |
| 329 | object's symbol table. */ |
| 330 | p = find_pc_sect_psymbol (objfile, pst, pc, section); |
| 331 | if (!p |
| 332 | || SYMBOL_VALUE_ADDRESS (p) |
| 333 | != BMSYMBOL_VALUE_ADDRESS (msymbol)) |
| 334 | goto next; |
| 335 | } |
| 336 | |
| 337 | /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as |
| 338 | PSYMTABS_ADDRMAP we used has already the best 1-byte |
| 339 | granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into |
| 340 | a worse chosen section due to the TEXTLOW/TEXTHIGH ranges |
| 341 | overlap. */ |
| 342 | |
| 343 | return pst; |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | next: |
| 348 | |
| 349 | /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs |
| 350 | which still have no corresponding full SYMTABs read. But it is not |
| 351 | present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB |
| 352 | so far. */ |
| 353 | |
| 354 | /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of |
| 355 | its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying |
| 356 | debug info type in single OBJFILE. */ |
| 357 | |
| 358 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst) |
| 359 | if (!pst->psymtabs_addrmap_supported |
| 360 | && pc >= pst->textlow && pc < pst->texthigh) |
| 361 | { |
| 362 | struct partial_symtab *best_pst; |
| 363 | |
| 364 | best_pst = find_pc_sect_psymtab_closer (objfile, pc, section, pst, |
| 365 | msymbol); |
| 366 | if (best_pst != NULL) |
| 367 | return best_pst; |
| 368 | } |
| 369 | |
| 370 | return NULL; |
| 371 | } |
| 372 | |
| 373 | static struct symtab * |
| 374 | find_pc_sect_symtab_from_partial (struct objfile *objfile, |
| 375 | struct bound_minimal_symbol msymbol, |
| 376 | CORE_ADDR pc, struct obj_section *section, |
| 377 | int warn_if_readin) |
| 378 | { |
| 379 | struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc, section, |
| 380 | msymbol); |
| 381 | if (ps) |
| 382 | { |
| 383 | if (warn_if_readin && ps->readin) |
| 384 | /* Might want to error() here (in case symtab is corrupt and |
| 385 | will cause a core dump), but maybe we can successfully |
| 386 | continue, so let's not. */ |
| 387 | warning (_("\ |
| 388 | (Internal error: pc %s in read in psymtab, but not in symtab.)\n"), |
| 389 | paddress (get_objfile_arch (objfile), pc)); |
| 390 | psymtab_to_symtab (objfile, ps); |
| 391 | return ps->symtab; |
| 392 | } |
| 393 | return NULL; |
| 394 | } |
| 395 | |
| 396 | /* Find which partial symbol within a psymtab matches PC and SECTION. |
| 397 | Return 0 if none. */ |
| 398 | |
| 399 | static struct partial_symbol * |
| 400 | find_pc_sect_psymbol (struct objfile *objfile, |
| 401 | struct partial_symtab *psymtab, CORE_ADDR pc, |
| 402 | struct obj_section *section) |
| 403 | { |
| 404 | struct partial_symbol *best = NULL, *p, **pp; |
| 405 | CORE_ADDR best_pc; |
| 406 | |
| 407 | gdb_assert (psymtab != NULL); |
| 408 | |
| 409 | /* Cope with programs that start at address 0. */ |
| 410 | best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0; |
| 411 | |
| 412 | /* Search the global symbols as well as the static symbols, so that |
| 413 | find_pc_partial_function doesn't use a minimal symbol and thus |
| 414 | cache a bad endaddr. */ |
| 415 | for (pp = objfile->global_psymbols.list + psymtab->globals_offset; |
| 416 | (pp - (objfile->global_psymbols.list + psymtab->globals_offset) |
| 417 | < psymtab->n_global_syms); |
| 418 | pp++) |
| 419 | { |
| 420 | p = *pp; |
| 421 | if (SYMBOL_DOMAIN (p) == VAR_DOMAIN |
| 422 | && PSYMBOL_CLASS (p) == LOC_BLOCK |
| 423 | && pc >= SYMBOL_VALUE_ADDRESS (p) |
| 424 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc |
| 425 | || (psymtab->textlow == 0 |
| 426 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) |
| 427 | { |
| 428 | if (section) /* Match on a specific section. */ |
| 429 | { |
| 430 | fixup_psymbol_section (p, objfile); |
| 431 | if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p), |
| 432 | section)) |
| 433 | continue; |
| 434 | } |
| 435 | best_pc = SYMBOL_VALUE_ADDRESS (p); |
| 436 | best = p; |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | for (pp = objfile->static_psymbols.list + psymtab->statics_offset; |
| 441 | (pp - (objfile->static_psymbols.list + psymtab->statics_offset) |
| 442 | < psymtab->n_static_syms); |
| 443 | pp++) |
| 444 | { |
| 445 | p = *pp; |
| 446 | if (SYMBOL_DOMAIN (p) == VAR_DOMAIN |
| 447 | && PSYMBOL_CLASS (p) == LOC_BLOCK |
| 448 | && pc >= SYMBOL_VALUE_ADDRESS (p) |
| 449 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc |
| 450 | || (psymtab->textlow == 0 |
| 451 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) |
| 452 | { |
| 453 | if (section) /* Match on a specific section. */ |
| 454 | { |
| 455 | fixup_psymbol_section (p, objfile); |
| 456 | if (!matching_obj_sections (SYMBOL_OBJ_SECTION (objfile, p), |
| 457 | section)) |
| 458 | continue; |
| 459 | } |
| 460 | best_pc = SYMBOL_VALUE_ADDRESS (p); |
| 461 | best = p; |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | return best; |
| 466 | } |
| 467 | |
| 468 | static void |
| 469 | fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile) |
| 470 | { |
| 471 | CORE_ADDR addr; |
| 472 | |
| 473 | if (!psym) |
| 474 | return; |
| 475 | |
| 476 | if (SYMBOL_SECTION (psym) >= 0) |
| 477 | return; |
| 478 | |
| 479 | gdb_assert (objfile); |
| 480 | |
| 481 | switch (PSYMBOL_CLASS (psym)) |
| 482 | { |
| 483 | case LOC_STATIC: |
| 484 | case LOC_LABEL: |
| 485 | case LOC_BLOCK: |
| 486 | addr = SYMBOL_VALUE_ADDRESS (psym); |
| 487 | break; |
| 488 | default: |
| 489 | /* Nothing else will be listed in the minsyms -- no use looking |
| 490 | it up. */ |
| 491 | return; |
| 492 | } |
| 493 | |
| 494 | fixup_section (&psym->ginfo, addr, objfile); |
| 495 | } |
| 496 | |
| 497 | static struct symtab * |
| 498 | lookup_symbol_aux_psymtabs (struct objfile *objfile, |
| 499 | int block_index, const char *name, |
| 500 | const domain_enum domain) |
| 501 | { |
| 502 | struct partial_symtab *ps; |
| 503 | const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0); |
| 504 | struct symtab *stab_best = NULL; |
| 505 | |
| 506 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps) |
| 507 | { |
| 508 | if (!ps->readin && lookup_partial_symbol (objfile, ps, name, |
| 509 | psymtab_index, domain)) |
| 510 | { |
| 511 | struct symbol *sym = NULL; |
| 512 | struct symtab *stab = psymtab_to_symtab (objfile, ps); |
| 513 | /* Note: While psymtab_to_symtab can return NULL if the partial symtab |
| 514 | is empty, we can assume it won't here because lookup_partial_symbol |
| 515 | succeeded. */ |
| 516 | const struct blockvector *bv = BLOCKVECTOR (stab); |
| 517 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
| 518 | |
| 519 | /* Some caution must be observed with overloaded functions |
| 520 | and methods, since the psymtab will not contain any overload |
| 521 | information (but NAME might contain it). */ |
| 522 | sym = block_lookup_symbol (block, name, domain); |
| 523 | |
| 524 | if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) |
| 525 | { |
| 526 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
| 527 | return stab; |
| 528 | |
| 529 | stab_best = stab; |
| 530 | } |
| 531 | |
| 532 | /* Keep looking through other psymtabs. */ |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | return stab_best; |
| 537 | } |
| 538 | |
| 539 | /* Look in PST for a symbol in DOMAIN whose name matches NAME. Search |
| 540 | the global block of PST if GLOBAL, and otherwise the static block. |
| 541 | MATCH is the comparison operation that returns true iff MATCH (s, |
| 542 | NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is |
| 543 | non-null, the symbols in the block are assumed to be ordered |
| 544 | according to it (allowing binary search). It must be compatible |
| 545 | with MATCH. Returns the symbol, if found, and otherwise NULL. */ |
| 546 | |
| 547 | static struct partial_symbol * |
| 548 | match_partial_symbol (struct objfile *objfile, |
| 549 | struct partial_symtab *pst, int global, |
| 550 | const char *name, domain_enum domain, |
| 551 | symbol_compare_ftype *match, |
| 552 | symbol_compare_ftype *ordered_compare) |
| 553 | { |
| 554 | struct partial_symbol **start, **psym; |
| 555 | struct partial_symbol **top, **real_top, **bottom, **center; |
| 556 | int length = (global ? pst->n_global_syms : pst->n_static_syms); |
| 557 | int do_linear_search = 1; |
| 558 | |
| 559 | if (length == 0) |
| 560 | return NULL; |
| 561 | start = (global ? |
| 562 | objfile->global_psymbols.list + pst->globals_offset : |
| 563 | objfile->static_psymbols.list + pst->statics_offset); |
| 564 | |
| 565 | if (global && ordered_compare) /* Can use a binary search. */ |
| 566 | { |
| 567 | do_linear_search = 0; |
| 568 | |
| 569 | /* Binary search. This search is guaranteed to end with center |
| 570 | pointing at the earliest partial symbol whose name might be |
| 571 | correct. At that point *all* partial symbols with an |
| 572 | appropriate name will be checked against the correct |
| 573 | domain. */ |
| 574 | |
| 575 | bottom = start; |
| 576 | top = start + length - 1; |
| 577 | real_top = top; |
| 578 | while (top > bottom) |
| 579 | { |
| 580 | center = bottom + (top - bottom) / 2; |
| 581 | gdb_assert (center < top); |
| 582 | if (!do_linear_search |
| 583 | && (SYMBOL_LANGUAGE (*center) == language_java)) |
| 584 | do_linear_search = 1; |
| 585 | if (ordered_compare (SYMBOL_SEARCH_NAME (*center), name) >= 0) |
| 586 | top = center; |
| 587 | else |
| 588 | bottom = center + 1; |
| 589 | } |
| 590 | gdb_assert (top == bottom); |
| 591 | |
| 592 | while (top <= real_top |
| 593 | && match (SYMBOL_SEARCH_NAME (*top), name) == 0) |
| 594 | { |
| 595 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*top), |
| 596 | SYMBOL_DOMAIN (*top), domain)) |
| 597 | return *top; |
| 598 | top++; |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | /* Can't use a binary search or else we found during the binary search that |
| 603 | we should also do a linear search. */ |
| 604 | |
| 605 | if (do_linear_search) |
| 606 | { |
| 607 | for (psym = start; psym < start + length; psym++) |
| 608 | { |
| 609 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym), |
| 610 | SYMBOL_DOMAIN (*psym), domain) |
| 611 | && match (SYMBOL_SEARCH_NAME (*psym), name) == 0) |
| 612 | return *psym; |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | return NULL; |
| 617 | } |
| 618 | |
| 619 | /* Returns the name used to search psymtabs. Unlike symtabs, psymtabs do |
| 620 | not contain any method/function instance information (since this would |
| 621 | force reading type information while reading psymtabs). Therefore, |
| 622 | if NAME contains overload information, it must be stripped before searching |
| 623 | psymtabs. |
| 624 | |
| 625 | The caller is responsible for freeing the return result. */ |
| 626 | |
| 627 | static char * |
| 628 | psymtab_search_name (const char *name) |
| 629 | { |
| 630 | switch (current_language->la_language) |
| 631 | { |
| 632 | case language_cplus: |
| 633 | case language_java: |
| 634 | { |
| 635 | if (strchr (name, '(')) |
| 636 | { |
| 637 | char *ret = cp_remove_params (name); |
| 638 | |
| 639 | if (ret) |
| 640 | return ret; |
| 641 | } |
| 642 | } |
| 643 | break; |
| 644 | |
| 645 | default: |
| 646 | break; |
| 647 | } |
| 648 | |
| 649 | return xstrdup (name); |
| 650 | } |
| 651 | |
| 652 | /* Look, in partial_symtab PST, for symbol whose natural name is NAME. |
| 653 | Check the global symbols if GLOBAL, the static symbols if not. */ |
| 654 | |
| 655 | static struct partial_symbol * |
| 656 | lookup_partial_symbol (struct objfile *objfile, |
| 657 | struct partial_symtab *pst, const char *name, |
| 658 | int global, domain_enum domain) |
| 659 | { |
| 660 | struct partial_symbol **start, **psym; |
| 661 | struct partial_symbol **top, **real_top, **bottom, **center; |
| 662 | int length = (global ? pst->n_global_syms : pst->n_static_syms); |
| 663 | int do_linear_search = 1; |
| 664 | char *search_name; |
| 665 | struct cleanup *cleanup; |
| 666 | |
| 667 | if (length == 0) |
| 668 | { |
| 669 | return (NULL); |
| 670 | } |
| 671 | |
| 672 | search_name = psymtab_search_name (name); |
| 673 | cleanup = make_cleanup (xfree, search_name); |
| 674 | start = (global ? |
| 675 | objfile->global_psymbols.list + pst->globals_offset : |
| 676 | objfile->static_psymbols.list + pst->statics_offset); |
| 677 | |
| 678 | if (global) /* This means we can use a binary search. */ |
| 679 | { |
| 680 | do_linear_search = 0; |
| 681 | |
| 682 | /* Binary search. This search is guaranteed to end with center |
| 683 | pointing at the earliest partial symbol whose name might be |
| 684 | correct. At that point *all* partial symbols with an |
| 685 | appropriate name will be checked against the correct |
| 686 | domain. */ |
| 687 | |
| 688 | bottom = start; |
| 689 | top = start + length - 1; |
| 690 | real_top = top; |
| 691 | while (top > bottom) |
| 692 | { |
| 693 | center = bottom + (top - bottom) / 2; |
| 694 | if (!(center < top)) |
| 695 | internal_error (__FILE__, __LINE__, |
| 696 | _("failed internal consistency check")); |
| 697 | if (!do_linear_search |
| 698 | && SYMBOL_LANGUAGE (*center) == language_java) |
| 699 | { |
| 700 | do_linear_search = 1; |
| 701 | } |
| 702 | if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center), |
| 703 | search_name) >= 0) |
| 704 | { |
| 705 | top = center; |
| 706 | } |
| 707 | else |
| 708 | { |
| 709 | bottom = center + 1; |
| 710 | } |
| 711 | } |
| 712 | if (!(top == bottom)) |
| 713 | internal_error (__FILE__, __LINE__, |
| 714 | _("failed internal consistency check")); |
| 715 | |
| 716 | /* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will |
| 717 | search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME. */ |
| 718 | while (top >= start && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name)) |
| 719 | top--; |
| 720 | |
| 721 | /* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME. */ |
| 722 | top++; |
| 723 | |
| 724 | while (top <= real_top && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name)) |
| 725 | { |
| 726 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*top), |
| 727 | SYMBOL_DOMAIN (*top), domain)) |
| 728 | { |
| 729 | do_cleanups (cleanup); |
| 730 | return (*top); |
| 731 | } |
| 732 | top++; |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | /* Can't use a binary search or else we found during the binary search that |
| 737 | we should also do a linear search. */ |
| 738 | |
| 739 | if (do_linear_search) |
| 740 | { |
| 741 | for (psym = start; psym < start + length; psym++) |
| 742 | { |
| 743 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym), |
| 744 | SYMBOL_DOMAIN (*psym), domain) |
| 745 | && SYMBOL_MATCHES_SEARCH_NAME (*psym, search_name)) |
| 746 | { |
| 747 | do_cleanups (cleanup); |
| 748 | return (*psym); |
| 749 | } |
| 750 | } |
| 751 | } |
| 752 | |
| 753 | do_cleanups (cleanup); |
| 754 | return (NULL); |
| 755 | } |
| 756 | |
| 757 | /* Get the symbol table that corresponds to a partial_symtab. |
| 758 | This is fast after the first time you do it. |
| 759 | The result will be NULL if the primary symtab has no symbols, |
| 760 | which can happen. Otherwise the result is the primary symtab |
| 761 | that contains PST. */ |
| 762 | |
| 763 | static struct symtab * |
| 764 | psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst) |
| 765 | { |
| 766 | /* If it is a shared psymtab, find an unshared psymtab that includes |
| 767 | it. Any such psymtab will do. */ |
| 768 | while (pst->user != NULL) |
| 769 | pst = pst->user; |
| 770 | |
| 771 | /* If it's been looked up before, return it. */ |
| 772 | if (pst->symtab) |
| 773 | return pst->symtab; |
| 774 | |
| 775 | /* If it has not yet been read in, read it. */ |
| 776 | if (!pst->readin) |
| 777 | { |
| 778 | struct cleanup *back_to = increment_reading_symtab (); |
| 779 | |
| 780 | (*pst->read_symtab) (pst, objfile); |
| 781 | do_cleanups (back_to); |
| 782 | } |
| 783 | |
| 784 | if (pst->symtab != NULL) |
| 785 | gdb_assert (pst->symtab->primary); |
| 786 | |
| 787 | return pst->symtab; |
| 788 | } |
| 789 | |
| 790 | static void |
| 791 | relocate_psymtabs (struct objfile *objfile, |
| 792 | const struct section_offsets *new_offsets, |
| 793 | const struct section_offsets *delta) |
| 794 | { |
| 795 | struct partial_symbol **psym; |
| 796 | struct partial_symtab *p; |
| 797 | |
| 798 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p) |
| 799 | { |
| 800 | p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
| 801 | p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
| 802 | } |
| 803 | |
| 804 | for (psym = objfile->global_psymbols.list; |
| 805 | psym < objfile->global_psymbols.next; |
| 806 | psym++) |
| 807 | { |
| 808 | fixup_psymbol_section (*psym, objfile); |
| 809 | if (SYMBOL_SECTION (*psym) >= 0) |
| 810 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, |
| 811 | SYMBOL_SECTION (*psym)); |
| 812 | } |
| 813 | for (psym = objfile->static_psymbols.list; |
| 814 | psym < objfile->static_psymbols.next; |
| 815 | psym++) |
| 816 | { |
| 817 | fixup_psymbol_section (*psym, objfile); |
| 818 | if (SYMBOL_SECTION (*psym) >= 0) |
| 819 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, |
| 820 | SYMBOL_SECTION (*psym)); |
| 821 | } |
| 822 | } |
| 823 | |
| 824 | static struct symtab * |
| 825 | find_last_source_symtab_from_partial (struct objfile *ofp) |
| 826 | { |
| 827 | struct partial_symtab *ps; |
| 828 | struct partial_symtab *cs_pst = 0; |
| 829 | |
| 830 | ALL_OBJFILE_PSYMTABS_REQUIRED (ofp, ps) |
| 831 | { |
| 832 | const char *name = ps->filename; |
| 833 | int len = strlen (name); |
| 834 | |
| 835 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 |
| 836 | || strcmp (name, "<<C++-namespaces>>") == 0))) |
| 837 | cs_pst = ps; |
| 838 | } |
| 839 | |
| 840 | if (cs_pst) |
| 841 | { |
| 842 | if (cs_pst->readin) |
| 843 | { |
| 844 | internal_error (__FILE__, __LINE__, |
| 845 | _("select_source_symtab: " |
| 846 | "readin pst found and no symtabs.")); |
| 847 | } |
| 848 | else |
| 849 | return psymtab_to_symtab (ofp, cs_pst); |
| 850 | } |
| 851 | return NULL; |
| 852 | } |
| 853 | |
| 854 | static void |
| 855 | forget_cached_source_info_partial (struct objfile *objfile) |
| 856 | { |
| 857 | struct partial_symtab *pst; |
| 858 | |
| 859 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, pst) |
| 860 | { |
| 861 | if (pst->fullname != NULL) |
| 862 | { |
| 863 | xfree (pst->fullname); |
| 864 | pst->fullname = NULL; |
| 865 | } |
| 866 | } |
| 867 | } |
| 868 | |
| 869 | static void |
| 870 | print_partial_symbols (struct gdbarch *gdbarch, |
| 871 | struct partial_symbol **p, int count, char *what, |
| 872 | struct ui_file *outfile) |
| 873 | { |
| 874 | fprintf_filtered (outfile, " %s partial symbols:\n", what); |
| 875 | while (count-- > 0) |
| 876 | { |
| 877 | QUIT; |
| 878 | fprintf_filtered (outfile, " `%s'", SYMBOL_LINKAGE_NAME (*p)); |
| 879 | if (SYMBOL_DEMANGLED_NAME (*p) != NULL) |
| 880 | { |
| 881 | fprintf_filtered (outfile, " `%s'", SYMBOL_DEMANGLED_NAME (*p)); |
| 882 | } |
| 883 | fputs_filtered (", ", outfile); |
| 884 | switch (SYMBOL_DOMAIN (*p)) |
| 885 | { |
| 886 | case UNDEF_DOMAIN: |
| 887 | fputs_filtered ("undefined domain, ", outfile); |
| 888 | break; |
| 889 | case VAR_DOMAIN: |
| 890 | /* This is the usual thing -- don't print it. */ |
| 891 | break; |
| 892 | case STRUCT_DOMAIN: |
| 893 | fputs_filtered ("struct domain, ", outfile); |
| 894 | break; |
| 895 | case LABEL_DOMAIN: |
| 896 | fputs_filtered ("label domain, ", outfile); |
| 897 | break; |
| 898 | default: |
| 899 | fputs_filtered ("<invalid domain>, ", outfile); |
| 900 | break; |
| 901 | } |
| 902 | switch (PSYMBOL_CLASS (*p)) |
| 903 | { |
| 904 | case LOC_UNDEF: |
| 905 | fputs_filtered ("undefined", outfile); |
| 906 | break; |
| 907 | case LOC_CONST: |
| 908 | fputs_filtered ("constant int", outfile); |
| 909 | break; |
| 910 | case LOC_STATIC: |
| 911 | fputs_filtered ("static", outfile); |
| 912 | break; |
| 913 | case LOC_REGISTER: |
| 914 | fputs_filtered ("register", outfile); |
| 915 | break; |
| 916 | case LOC_ARG: |
| 917 | fputs_filtered ("pass by value", outfile); |
| 918 | break; |
| 919 | case LOC_REF_ARG: |
| 920 | fputs_filtered ("pass by reference", outfile); |
| 921 | break; |
| 922 | case LOC_REGPARM_ADDR: |
| 923 | fputs_filtered ("register address parameter", outfile); |
| 924 | break; |
| 925 | case LOC_LOCAL: |
| 926 | fputs_filtered ("stack parameter", outfile); |
| 927 | break; |
| 928 | case LOC_TYPEDEF: |
| 929 | fputs_filtered ("type", outfile); |
| 930 | break; |
| 931 | case LOC_LABEL: |
| 932 | fputs_filtered ("label", outfile); |
| 933 | break; |
| 934 | case LOC_BLOCK: |
| 935 | fputs_filtered ("function", outfile); |
| 936 | break; |
| 937 | case LOC_CONST_BYTES: |
| 938 | fputs_filtered ("constant bytes", outfile); |
| 939 | break; |
| 940 | case LOC_UNRESOLVED: |
| 941 | fputs_filtered ("unresolved", outfile); |
| 942 | break; |
| 943 | case LOC_OPTIMIZED_OUT: |
| 944 | fputs_filtered ("optimized out", outfile); |
| 945 | break; |
| 946 | case LOC_COMPUTED: |
| 947 | fputs_filtered ("computed at runtime", outfile); |
| 948 | break; |
| 949 | default: |
| 950 | fputs_filtered ("<invalid location>", outfile); |
| 951 | break; |
| 952 | } |
| 953 | fputs_filtered (", ", outfile); |
| 954 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (*p)), outfile); |
| 955 | fprintf_filtered (outfile, "\n"); |
| 956 | p++; |
| 957 | } |
| 958 | } |
| 959 | |
| 960 | static void |
| 961 | dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab, |
| 962 | struct ui_file *outfile) |
| 963 | { |
| 964 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
| 965 | int i; |
| 966 | |
| 967 | if (psymtab->anonymous) |
| 968 | { |
| 969 | fprintf_filtered (outfile, "\nAnonymous partial symtab (%s) ", |
| 970 | psymtab->filename); |
| 971 | } |
| 972 | else |
| 973 | { |
| 974 | fprintf_filtered (outfile, "\nPartial symtab for source file %s ", |
| 975 | psymtab->filename); |
| 976 | } |
| 977 | fprintf_filtered (outfile, "(object "); |
| 978 | gdb_print_host_address (psymtab, outfile); |
| 979 | fprintf_filtered (outfile, ")\n\n"); |
| 980 | fprintf_unfiltered (outfile, " Read from object file %s (", |
| 981 | objfile_name (objfile)); |
| 982 | gdb_print_host_address (objfile, outfile); |
| 983 | fprintf_unfiltered (outfile, ")\n"); |
| 984 | |
| 985 | if (psymtab->readin) |
| 986 | { |
| 987 | fprintf_filtered (outfile, |
| 988 | " Full symtab was read (at "); |
| 989 | gdb_print_host_address (psymtab->symtab, outfile); |
| 990 | fprintf_filtered (outfile, " by function at "); |
| 991 | gdb_print_host_address (psymtab->read_symtab, outfile); |
| 992 | fprintf_filtered (outfile, ")\n"); |
| 993 | } |
| 994 | |
| 995 | fprintf_filtered (outfile, " Relocate symbols by "); |
| 996 | for (i = 0; i < objfile->num_sections; ++i) |
| 997 | { |
| 998 | if (i != 0) |
| 999 | fprintf_filtered (outfile, ", "); |
| 1000 | wrap_here (" "); |
| 1001 | fputs_filtered (paddress (gdbarch, |
| 1002 | ANOFFSET (psymtab->section_offsets, i)), |
| 1003 | outfile); |
| 1004 | } |
| 1005 | fprintf_filtered (outfile, "\n"); |
| 1006 | |
| 1007 | fprintf_filtered (outfile, " Symbols cover text addresses "); |
| 1008 | fputs_filtered (paddress (gdbarch, psymtab->textlow), outfile); |
| 1009 | fprintf_filtered (outfile, "-"); |
| 1010 | fputs_filtered (paddress (gdbarch, psymtab->texthigh), outfile); |
| 1011 | fprintf_filtered (outfile, "\n"); |
| 1012 | fprintf_filtered (outfile, " Address map supported - %s.\n", |
| 1013 | psymtab->psymtabs_addrmap_supported ? "yes" : "no"); |
| 1014 | fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n", |
| 1015 | psymtab->number_of_dependencies); |
| 1016 | for (i = 0; i < psymtab->number_of_dependencies; i++) |
| 1017 | { |
| 1018 | fprintf_filtered (outfile, " %d ", i); |
| 1019 | gdb_print_host_address (psymtab->dependencies[i], outfile); |
| 1020 | fprintf_filtered (outfile, " %s\n", |
| 1021 | psymtab->dependencies[i]->filename); |
| 1022 | } |
| 1023 | if (psymtab->user != NULL) |
| 1024 | { |
| 1025 | fprintf_filtered (outfile, " Shared partial symtab with user "); |
| 1026 | gdb_print_host_address (psymtab->user, outfile); |
| 1027 | fprintf_filtered (outfile, "\n"); |
| 1028 | } |
| 1029 | if (psymtab->n_global_syms > 0) |
| 1030 | { |
| 1031 | print_partial_symbols (gdbarch, |
| 1032 | objfile->global_psymbols.list |
| 1033 | + psymtab->globals_offset, |
| 1034 | psymtab->n_global_syms, "Global", outfile); |
| 1035 | } |
| 1036 | if (psymtab->n_static_syms > 0) |
| 1037 | { |
| 1038 | print_partial_symbols (gdbarch, |
| 1039 | objfile->static_psymbols.list |
| 1040 | + psymtab->statics_offset, |
| 1041 | psymtab->n_static_syms, "Static", outfile); |
| 1042 | } |
| 1043 | fprintf_filtered (outfile, "\n"); |
| 1044 | } |
| 1045 | |
| 1046 | static void |
| 1047 | print_psymtab_stats_for_objfile (struct objfile *objfile) |
| 1048 | { |
| 1049 | int i; |
| 1050 | struct partial_symtab *ps; |
| 1051 | |
| 1052 | i = 0; |
| 1053 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps) |
| 1054 | { |
| 1055 | if (ps->readin == 0) |
| 1056 | i++; |
| 1057 | } |
| 1058 | printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i); |
| 1059 | } |
| 1060 | |
| 1061 | static void |
| 1062 | dump_psymtabs_for_objfile (struct objfile *objfile) |
| 1063 | { |
| 1064 | struct partial_symtab *psymtab; |
| 1065 | |
| 1066 | if (objfile->psymtabs) |
| 1067 | { |
| 1068 | printf_filtered ("Psymtabs:\n"); |
| 1069 | for (psymtab = objfile->psymtabs; |
| 1070 | psymtab != NULL; |
| 1071 | psymtab = psymtab->next) |
| 1072 | { |
| 1073 | printf_filtered ("%s at ", |
| 1074 | psymtab->filename); |
| 1075 | gdb_print_host_address (psymtab, gdb_stdout); |
| 1076 | printf_filtered (", "); |
| 1077 | wrap_here (" "); |
| 1078 | } |
| 1079 | printf_filtered ("\n\n"); |
| 1080 | } |
| 1081 | } |
| 1082 | |
| 1083 | /* Look through the partial symtabs for all symbols which begin |
| 1084 | by matching FUNC_NAME. Make sure we read that symbol table in. */ |
| 1085 | |
| 1086 | static void |
| 1087 | read_symtabs_for_function (struct objfile *objfile, const char *func_name) |
| 1088 | { |
| 1089 | struct partial_symtab *ps; |
| 1090 | |
| 1091 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps) |
| 1092 | { |
| 1093 | if (ps->readin) |
| 1094 | continue; |
| 1095 | |
| 1096 | if ((lookup_partial_symbol (objfile, ps, func_name, 1, VAR_DOMAIN) |
| 1097 | != NULL) |
| 1098 | || (lookup_partial_symbol (objfile, ps, func_name, 0, VAR_DOMAIN) |
| 1099 | != NULL)) |
| 1100 | psymtab_to_symtab (objfile, ps); |
| 1101 | } |
| 1102 | } |
| 1103 | |
| 1104 | static void |
| 1105 | expand_partial_symbol_tables (struct objfile *objfile) |
| 1106 | { |
| 1107 | struct partial_symtab *psymtab; |
| 1108 | |
| 1109 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab) |
| 1110 | { |
| 1111 | psymtab_to_symtab (objfile, psymtab); |
| 1112 | } |
| 1113 | } |
| 1114 | |
| 1115 | static void |
| 1116 | read_psymtabs_with_fullname (struct objfile *objfile, const char *fullname) |
| 1117 | { |
| 1118 | struct partial_symtab *p; |
| 1119 | |
| 1120 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p) |
| 1121 | { |
| 1122 | /* Anonymous psymtabs don't have a name of a source file. */ |
| 1123 | if (p->anonymous) |
| 1124 | continue; |
| 1125 | |
| 1126 | /* psymtab_to_fullname tries to open the file which is slow. |
| 1127 | Don't call it if we know the basenames don't match. */ |
| 1128 | if ((basenames_may_differ |
| 1129 | || filename_cmp (lbasename (fullname), lbasename (p->filename)) == 0) |
| 1130 | && filename_cmp (fullname, psymtab_to_fullname (p)) == 0) |
| 1131 | psymtab_to_symtab (objfile, p); |
| 1132 | } |
| 1133 | } |
| 1134 | |
| 1135 | static void |
| 1136 | map_symbol_filenames_psymtab (struct objfile *objfile, |
| 1137 | symbol_filename_ftype *fun, void *data, |
| 1138 | int need_fullname) |
| 1139 | { |
| 1140 | struct partial_symtab *ps; |
| 1141 | |
| 1142 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps) |
| 1143 | { |
| 1144 | const char *fullname; |
| 1145 | |
| 1146 | if (ps->readin) |
| 1147 | continue; |
| 1148 | |
| 1149 | /* We can skip shared psymtabs here, because any file name will be |
| 1150 | attached to the unshared psymtab. */ |
| 1151 | if (ps->user != NULL) |
| 1152 | continue; |
| 1153 | |
| 1154 | /* Anonymous psymtabs don't have a file name. */ |
| 1155 | if (ps->anonymous) |
| 1156 | continue; |
| 1157 | |
| 1158 | QUIT; |
| 1159 | if (need_fullname) |
| 1160 | fullname = psymtab_to_fullname (ps); |
| 1161 | else |
| 1162 | fullname = NULL; |
| 1163 | (*fun) (ps->filename, fullname, data); |
| 1164 | } |
| 1165 | } |
| 1166 | |
| 1167 | /* Finds the fullname that a partial_symtab represents. |
| 1168 | |
| 1169 | If this functions finds the fullname, it will save it in ps->fullname |
| 1170 | and it will also return the value. |
| 1171 | |
| 1172 | If this function fails to find the file that this partial_symtab represents, |
| 1173 | NULL will be returned and ps->fullname will be set to NULL. */ |
| 1174 | |
| 1175 | static const char * |
| 1176 | psymtab_to_fullname (struct partial_symtab *ps) |
| 1177 | { |
| 1178 | gdb_assert (!ps->anonymous); |
| 1179 | |
| 1180 | /* Use cached copy if we have it. |
| 1181 | We rely on forget_cached_source_info being called appropriately |
| 1182 | to handle cases like the file being moved. */ |
| 1183 | if (ps->fullname == NULL) |
| 1184 | { |
| 1185 | int fd = find_and_open_source (ps->filename, ps->dirname, &ps->fullname); |
| 1186 | |
| 1187 | if (fd >= 0) |
| 1188 | close (fd); |
| 1189 | else |
| 1190 | { |
| 1191 | char *fullname; |
| 1192 | struct cleanup *back_to; |
| 1193 | |
| 1194 | /* rewrite_source_path would be applied by find_and_open_source, we |
| 1195 | should report the pathname where GDB tried to find the file. */ |
| 1196 | |
| 1197 | if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename)) |
| 1198 | fullname = xstrdup (ps->filename); |
| 1199 | else |
| 1200 | fullname = concat (ps->dirname, SLASH_STRING, ps->filename, NULL); |
| 1201 | |
| 1202 | back_to = make_cleanup (xfree, fullname); |
| 1203 | ps->fullname = rewrite_source_path (fullname); |
| 1204 | if (ps->fullname == NULL) |
| 1205 | ps->fullname = xstrdup (fullname); |
| 1206 | do_cleanups (back_to); |
| 1207 | } |
| 1208 | } |
| 1209 | |
| 1210 | return ps->fullname; |
| 1211 | } |
| 1212 | |
| 1213 | /* For all symbols, s, in BLOCK that are in NAMESPACE and match NAME |
| 1214 | according to the function MATCH, call CALLBACK(BLOCK, s, DATA). |
| 1215 | BLOCK is assumed to come from OBJFILE. Returns 1 iff CALLBACK |
| 1216 | ever returns non-zero, and otherwise returns 0. */ |
| 1217 | |
| 1218 | static int |
| 1219 | map_block (const char *name, domain_enum namespace, struct objfile *objfile, |
| 1220 | struct block *block, |
| 1221 | int (*callback) (struct block *, struct symbol *, void *), |
| 1222 | void *data, symbol_compare_ftype *match) |
| 1223 | { |
| 1224 | struct block_iterator iter; |
| 1225 | struct symbol *sym; |
| 1226 | |
| 1227 | for (sym = block_iter_match_first (block, name, match, &iter); |
| 1228 | sym != NULL; sym = block_iter_match_next (name, match, &iter)) |
| 1229 | { |
| 1230 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
| 1231 | SYMBOL_DOMAIN (sym), namespace)) |
| 1232 | { |
| 1233 | if (callback (block, sym, data)) |
| 1234 | return 1; |
| 1235 | } |
| 1236 | } |
| 1237 | |
| 1238 | return 0; |
| 1239 | } |
| 1240 | |
| 1241 | /* Psymtab version of map_matching_symbols. See its definition in |
| 1242 | the definition of quick_symbol_functions in symfile.h. */ |
| 1243 | |
| 1244 | static void |
| 1245 | map_matching_symbols_psymtab (struct objfile *objfile, |
| 1246 | const char *name, domain_enum namespace, |
| 1247 | int global, |
| 1248 | int (*callback) (struct block *, |
| 1249 | struct symbol *, void *), |
| 1250 | void *data, |
| 1251 | symbol_compare_ftype *match, |
| 1252 | symbol_compare_ftype *ordered_compare) |
| 1253 | { |
| 1254 | const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
| 1255 | struct partial_symtab *ps; |
| 1256 | |
| 1257 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps) |
| 1258 | { |
| 1259 | QUIT; |
| 1260 | if (ps->readin |
| 1261 | || match_partial_symbol (objfile, ps, global, name, namespace, match, |
| 1262 | ordered_compare)) |
| 1263 | { |
| 1264 | struct symtab *s = psymtab_to_symtab (objfile, ps); |
| 1265 | struct block *block; |
| 1266 | |
| 1267 | if (s == NULL) |
| 1268 | continue; |
| 1269 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), block_kind); |
| 1270 | if (map_block (name, namespace, objfile, block, |
| 1271 | callback, data, match)) |
| 1272 | return; |
| 1273 | if (callback (block, NULL, data)) |
| 1274 | return; |
| 1275 | } |
| 1276 | } |
| 1277 | } |
| 1278 | |
| 1279 | /* A helper for expand_symtabs_matching_via_partial that handles |
| 1280 | searching included psymtabs. This returns 1 if a symbol is found, |
| 1281 | and zero otherwise. It also updates the 'searched_flag' on the |
| 1282 | various psymtabs that it searches. */ |
| 1283 | |
| 1284 | static int |
| 1285 | recursively_search_psymtabs (struct partial_symtab *ps, |
| 1286 | struct objfile *objfile, |
| 1287 | enum search_domain kind, |
| 1288 | expand_symtabs_symbol_matcher_ftype *sym_matcher, |
| 1289 | void *data) |
| 1290 | { |
| 1291 | struct partial_symbol **psym; |
| 1292 | struct partial_symbol **bound, **gbound, **sbound; |
| 1293 | int keep_going = 1; |
| 1294 | int result = PST_SEARCHED_AND_NOT_FOUND; |
| 1295 | int i; |
| 1296 | |
| 1297 | if (ps->searched_flag != PST_NOT_SEARCHED) |
| 1298 | return ps->searched_flag == PST_SEARCHED_AND_FOUND; |
| 1299 | |
| 1300 | /* Recurse into shared psymtabs first, because they may have already |
| 1301 | been searched, and this could save some time. */ |
| 1302 | for (i = 0; i < ps->number_of_dependencies; ++i) |
| 1303 | { |
| 1304 | int r; |
| 1305 | |
| 1306 | /* Skip non-shared dependencies, these are handled elsewhere. */ |
| 1307 | if (ps->dependencies[i]->user == NULL) |
| 1308 | continue; |
| 1309 | |
| 1310 | r = recursively_search_psymtabs (ps->dependencies[i], |
| 1311 | objfile, kind, sym_matcher, data); |
| 1312 | if (r != 0) |
| 1313 | { |
| 1314 | ps->searched_flag = PST_SEARCHED_AND_FOUND; |
| 1315 | return 1; |
| 1316 | } |
| 1317 | } |
| 1318 | |
| 1319 | gbound = (objfile->global_psymbols.list |
| 1320 | + ps->globals_offset + ps->n_global_syms); |
| 1321 | sbound = (objfile->static_psymbols.list |
| 1322 | + ps->statics_offset + ps->n_static_syms); |
| 1323 | bound = gbound; |
| 1324 | |
| 1325 | /* Go through all of the symbols stored in a partial |
| 1326 | symtab in one loop. */ |
| 1327 | psym = objfile->global_psymbols.list + ps->globals_offset; |
| 1328 | while (keep_going) |
| 1329 | { |
| 1330 | if (psym >= bound) |
| 1331 | { |
| 1332 | if (bound == gbound && ps->n_static_syms != 0) |
| 1333 | { |
| 1334 | psym = objfile->static_psymbols.list + ps->statics_offset; |
| 1335 | bound = sbound; |
| 1336 | } |
| 1337 | else |
| 1338 | keep_going = 0; |
| 1339 | continue; |
| 1340 | } |
| 1341 | else |
| 1342 | { |
| 1343 | QUIT; |
| 1344 | |
| 1345 | if ((kind == ALL_DOMAIN |
| 1346 | || (kind == VARIABLES_DOMAIN |
| 1347 | && PSYMBOL_CLASS (*psym) != LOC_TYPEDEF |
| 1348 | && PSYMBOL_CLASS (*psym) != LOC_BLOCK) |
| 1349 | || (kind == FUNCTIONS_DOMAIN |
| 1350 | && PSYMBOL_CLASS (*psym) == LOC_BLOCK) |
| 1351 | || (kind == TYPES_DOMAIN |
| 1352 | && PSYMBOL_CLASS (*psym) == LOC_TYPEDEF)) |
| 1353 | && (*sym_matcher) (SYMBOL_SEARCH_NAME (*psym), data)) |
| 1354 | { |
| 1355 | /* Found a match, so notify our caller. */ |
| 1356 | result = PST_SEARCHED_AND_FOUND; |
| 1357 | keep_going = 0; |
| 1358 | } |
| 1359 | } |
| 1360 | psym++; |
| 1361 | } |
| 1362 | |
| 1363 | ps->searched_flag = result; |
| 1364 | return result == PST_SEARCHED_AND_FOUND; |
| 1365 | } |
| 1366 | |
| 1367 | static void |
| 1368 | expand_symtabs_matching_via_partial |
| 1369 | (struct objfile *objfile, |
| 1370 | expand_symtabs_file_matcher_ftype *file_matcher, |
| 1371 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, |
| 1372 | enum search_domain kind, |
| 1373 | void *data) |
| 1374 | { |
| 1375 | struct partial_symtab *ps; |
| 1376 | |
| 1377 | /* Clear the search flags. */ |
| 1378 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps) |
| 1379 | { |
| 1380 | ps->searched_flag = PST_NOT_SEARCHED; |
| 1381 | } |
| 1382 | |
| 1383 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps) |
| 1384 | { |
| 1385 | if (ps->readin) |
| 1386 | continue; |
| 1387 | |
| 1388 | /* We skip shared psymtabs because file-matching doesn't apply |
| 1389 | to them; but we search them later in the loop. */ |
| 1390 | if (ps->user != NULL) |
| 1391 | continue; |
| 1392 | |
| 1393 | if (file_matcher) |
| 1394 | { |
| 1395 | int match; |
| 1396 | |
| 1397 | if (ps->anonymous) |
| 1398 | continue; |
| 1399 | |
| 1400 | match = (*file_matcher) (ps->filename, data, 0); |
| 1401 | if (!match) |
| 1402 | { |
| 1403 | /* Before we invoke realpath, which can get expensive when many |
| 1404 | files are involved, do a quick comparison of the basenames. */ |
| 1405 | if (basenames_may_differ |
| 1406 | || (*file_matcher) (lbasename (ps->filename), data, 1)) |
| 1407 | match = (*file_matcher) (psymtab_to_fullname (ps), data, 0); |
| 1408 | } |
| 1409 | if (!match) |
| 1410 | continue; |
| 1411 | } |
| 1412 | |
| 1413 | if (recursively_search_psymtabs (ps, objfile, kind, symbol_matcher, data)) |
| 1414 | psymtab_to_symtab (objfile, ps); |
| 1415 | } |
| 1416 | } |
| 1417 | |
| 1418 | static int |
| 1419 | objfile_has_psyms (struct objfile *objfile) |
| 1420 | { |
| 1421 | return objfile->psymtabs != NULL; |
| 1422 | } |
| 1423 | |
| 1424 | const struct quick_symbol_functions psym_functions = |
| 1425 | { |
| 1426 | objfile_has_psyms, |
| 1427 | find_last_source_symtab_from_partial, |
| 1428 | forget_cached_source_info_partial, |
| 1429 | partial_map_symtabs_matching_filename, |
| 1430 | lookup_symbol_aux_psymtabs, |
| 1431 | print_psymtab_stats_for_objfile, |
| 1432 | dump_psymtabs_for_objfile, |
| 1433 | relocate_psymtabs, |
| 1434 | read_symtabs_for_function, |
| 1435 | expand_partial_symbol_tables, |
| 1436 | read_psymtabs_with_fullname, |
| 1437 | map_matching_symbols_psymtab, |
| 1438 | expand_symtabs_matching_via_partial, |
| 1439 | find_pc_sect_symtab_from_partial, |
| 1440 | map_symbol_filenames_psymtab |
| 1441 | }; |
| 1442 | |
| 1443 | \f |
| 1444 | |
| 1445 | /* This compares two partial symbols by names, using strcmp_iw_ordered |
| 1446 | for the comparison. */ |
| 1447 | |
| 1448 | static int |
| 1449 | compare_psymbols (const void *s1p, const void *s2p) |
| 1450 | { |
| 1451 | struct partial_symbol *const *s1 = s1p; |
| 1452 | struct partial_symbol *const *s2 = s2p; |
| 1453 | |
| 1454 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), |
| 1455 | SYMBOL_SEARCH_NAME (*s2)); |
| 1456 | } |
| 1457 | |
| 1458 | void |
| 1459 | sort_pst_symbols (struct objfile *objfile, struct partial_symtab *pst) |
| 1460 | { |
| 1461 | /* Sort the global list; don't sort the static list. */ |
| 1462 | |
| 1463 | qsort (objfile->global_psymbols.list + pst->globals_offset, |
| 1464 | pst->n_global_syms, sizeof (struct partial_symbol *), |
| 1465 | compare_psymbols); |
| 1466 | } |
| 1467 | |
| 1468 | /* Allocate and partially fill a partial symtab. It will be |
| 1469 | completely filled at the end of the symbol list. |
| 1470 | |
| 1471 | FILENAME is the name of the symbol-file we are reading from. */ |
| 1472 | |
| 1473 | struct partial_symtab * |
| 1474 | start_psymtab_common (struct objfile *objfile, |
| 1475 | struct section_offsets *section_offsets, |
| 1476 | const char *filename, |
| 1477 | CORE_ADDR textlow, struct partial_symbol **global_syms, |
| 1478 | struct partial_symbol **static_syms) |
| 1479 | { |
| 1480 | struct partial_symtab *psymtab; |
| 1481 | |
| 1482 | psymtab = allocate_psymtab (filename, objfile); |
| 1483 | psymtab->section_offsets = section_offsets; |
| 1484 | psymtab->textlow = textlow; |
| 1485 | psymtab->texthigh = psymtab->textlow; /* default */ |
| 1486 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; |
| 1487 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; |
| 1488 | return (psymtab); |
| 1489 | } |
| 1490 | |
| 1491 | /* Calculate a hash code for the given partial symbol. The hash is |
| 1492 | calculated using the symbol's value, language, domain, class |
| 1493 | and name. These are the values which are set by |
| 1494 | add_psymbol_to_bcache. */ |
| 1495 | |
| 1496 | static unsigned long |
| 1497 | psymbol_hash (const void *addr, int length) |
| 1498 | { |
| 1499 | unsigned long h = 0; |
| 1500 | struct partial_symbol *psymbol = (struct partial_symbol *) addr; |
| 1501 | unsigned int lang = psymbol->ginfo.language; |
| 1502 | unsigned int domain = PSYMBOL_DOMAIN (psymbol); |
| 1503 | unsigned int class = PSYMBOL_CLASS (psymbol); |
| 1504 | |
| 1505 | h = hash_continue (&psymbol->ginfo.value, sizeof (psymbol->ginfo.value), h); |
| 1506 | h = hash_continue (&lang, sizeof (unsigned int), h); |
| 1507 | h = hash_continue (&domain, sizeof (unsigned int), h); |
| 1508 | h = hash_continue (&class, sizeof (unsigned int), h); |
| 1509 | h = hash_continue (psymbol->ginfo.name, strlen (psymbol->ginfo.name), h); |
| 1510 | |
| 1511 | return h; |
| 1512 | } |
| 1513 | |
| 1514 | /* Returns true if the symbol at addr1 equals the symbol at addr2. |
| 1515 | For the comparison this function uses a symbols value, |
| 1516 | language, domain, class and name. */ |
| 1517 | |
| 1518 | static int |
| 1519 | psymbol_compare (const void *addr1, const void *addr2, int length) |
| 1520 | { |
| 1521 | struct partial_symbol *sym1 = (struct partial_symbol *) addr1; |
| 1522 | struct partial_symbol *sym2 = (struct partial_symbol *) addr2; |
| 1523 | |
| 1524 | return (memcmp (&sym1->ginfo.value, &sym1->ginfo.value, |
| 1525 | sizeof (sym1->ginfo.value)) == 0 |
| 1526 | && sym1->ginfo.language == sym2->ginfo.language |
| 1527 | && PSYMBOL_DOMAIN (sym1) == PSYMBOL_DOMAIN (sym2) |
| 1528 | && PSYMBOL_CLASS (sym1) == PSYMBOL_CLASS (sym2) |
| 1529 | && sym1->ginfo.name == sym2->ginfo.name); |
| 1530 | } |
| 1531 | |
| 1532 | /* Initialize a partial symbol bcache. */ |
| 1533 | |
| 1534 | struct psymbol_bcache * |
| 1535 | psymbol_bcache_init (void) |
| 1536 | { |
| 1537 | struct psymbol_bcache *bcache = XCNEW (struct psymbol_bcache); |
| 1538 | bcache->bcache = bcache_xmalloc (psymbol_hash, psymbol_compare); |
| 1539 | return bcache; |
| 1540 | } |
| 1541 | |
| 1542 | /* Free a partial symbol bcache. */ |
| 1543 | void |
| 1544 | psymbol_bcache_free (struct psymbol_bcache *bcache) |
| 1545 | { |
| 1546 | if (bcache == NULL) |
| 1547 | return; |
| 1548 | |
| 1549 | bcache_xfree (bcache->bcache); |
| 1550 | xfree (bcache); |
| 1551 | } |
| 1552 | |
| 1553 | /* Return the internal bcache of the psymbol_bcache BCACHE. */ |
| 1554 | |
| 1555 | struct bcache * |
| 1556 | psymbol_bcache_get_bcache (struct psymbol_bcache *bcache) |
| 1557 | { |
| 1558 | return bcache->bcache; |
| 1559 | } |
| 1560 | |
| 1561 | /* Find a copy of the SYM in BCACHE. If BCACHE has never seen this |
| 1562 | symbol before, add a copy to BCACHE. In either case, return a pointer |
| 1563 | to BCACHE's copy of the symbol. If optional ADDED is not NULL, return |
| 1564 | 1 in case of new entry or 0 if returning an old entry. */ |
| 1565 | |
| 1566 | static const struct partial_symbol * |
| 1567 | psymbol_bcache_full (struct partial_symbol *sym, |
| 1568 | struct psymbol_bcache *bcache, |
| 1569 | int *added) |
| 1570 | { |
| 1571 | return bcache_full (sym, |
| 1572 | sizeof (struct partial_symbol), |
| 1573 | bcache->bcache, |
| 1574 | added); |
| 1575 | } |
| 1576 | |
| 1577 | /* Helper function, initialises partial symbol structure and stashes |
| 1578 | it into objfile's bcache. Note that our caching mechanism will |
| 1579 | use all fields of struct partial_symbol to determine hash value of the |
| 1580 | structure. In other words, having two symbols with the same name but |
| 1581 | different domain (or address) is possible and correct. */ |
| 1582 | |
| 1583 | static const struct partial_symbol * |
| 1584 | add_psymbol_to_bcache (const char *name, int namelength, int copy_name, |
| 1585 | domain_enum domain, |
| 1586 | enum address_class class, |
| 1587 | long val, /* Value as a long */ |
| 1588 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ |
| 1589 | enum language language, struct objfile *objfile, |
| 1590 | int *added) |
| 1591 | { |
| 1592 | struct partial_symbol psymbol; |
| 1593 | |
| 1594 | /* We must ensure that the entire struct has been zeroed before |
| 1595 | assigning to it, because an assignment may not touch some of the |
| 1596 | holes. */ |
| 1597 | memset (&psymbol, 0, sizeof (psymbol)); |
| 1598 | |
| 1599 | /* val and coreaddr are mutually exclusive, one of them *will* be zero. */ |
| 1600 | if (val != 0) |
| 1601 | { |
| 1602 | SYMBOL_VALUE (&psymbol) = val; |
| 1603 | } |
| 1604 | else |
| 1605 | { |
| 1606 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; |
| 1607 | } |
| 1608 | SYMBOL_SECTION (&psymbol) = -1; |
| 1609 | SYMBOL_SET_LANGUAGE (&psymbol, language, &objfile->objfile_obstack); |
| 1610 | PSYMBOL_DOMAIN (&psymbol) = domain; |
| 1611 | PSYMBOL_CLASS (&psymbol) = class; |
| 1612 | |
| 1613 | SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile); |
| 1614 | |
| 1615 | /* Stash the partial symbol away in the cache. */ |
| 1616 | return psymbol_bcache_full (&psymbol, |
| 1617 | objfile->psymbol_cache, |
| 1618 | added); |
| 1619 | } |
| 1620 | |
| 1621 | /* Increase the space allocated for LISTP, which is probably |
| 1622 | global_psymbols or static_psymbols. This space will eventually |
| 1623 | be freed in free_objfile(). */ |
| 1624 | |
| 1625 | static void |
| 1626 | extend_psymbol_list (struct psymbol_allocation_list *listp, |
| 1627 | struct objfile *objfile) |
| 1628 | { |
| 1629 | int new_size; |
| 1630 | |
| 1631 | if (listp->size == 0) |
| 1632 | { |
| 1633 | new_size = 255; |
| 1634 | listp->list = (struct partial_symbol **) |
| 1635 | xmalloc (new_size * sizeof (struct partial_symbol *)); |
| 1636 | } |
| 1637 | else |
| 1638 | { |
| 1639 | new_size = listp->size * 2; |
| 1640 | listp->list = (struct partial_symbol **) |
| 1641 | xrealloc ((char *) listp->list, |
| 1642 | new_size * sizeof (struct partial_symbol *)); |
| 1643 | } |
| 1644 | /* Next assumes we only went one over. Should be good if |
| 1645 | program works correctly. */ |
| 1646 | listp->next = listp->list + listp->size; |
| 1647 | listp->size = new_size; |
| 1648 | } |
| 1649 | |
| 1650 | /* Helper function, adds partial symbol to the given partial symbol |
| 1651 | list. */ |
| 1652 | |
| 1653 | static void |
| 1654 | append_psymbol_to_list (struct psymbol_allocation_list *list, |
| 1655 | const struct partial_symbol *psym, |
| 1656 | struct objfile *objfile) |
| 1657 | { |
| 1658 | if (list->next >= list->list + list->size) |
| 1659 | extend_psymbol_list (list, objfile); |
| 1660 | *list->next++ = (struct partial_symbol *) psym; |
| 1661 | OBJSTAT (objfile, n_psyms++); |
| 1662 | } |
| 1663 | |
| 1664 | /* Add a symbol with a long value to a psymtab. |
| 1665 | Since one arg is a struct, we pass in a ptr and deref it (sigh). |
| 1666 | Return the partial symbol that has been added. */ |
| 1667 | |
| 1668 | void |
| 1669 | add_psymbol_to_list (const char *name, int namelength, int copy_name, |
| 1670 | domain_enum domain, |
| 1671 | enum address_class class, |
| 1672 | struct psymbol_allocation_list *list, |
| 1673 | long val, /* Value as a long */ |
| 1674 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ |
| 1675 | enum language language, struct objfile *objfile) |
| 1676 | { |
| 1677 | const struct partial_symbol *psym; |
| 1678 | |
| 1679 | int added; |
| 1680 | |
| 1681 | /* Stash the partial symbol away in the cache. */ |
| 1682 | psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, class, |
| 1683 | val, coreaddr, language, objfile, &added); |
| 1684 | |
| 1685 | /* Do not duplicate global partial symbols. */ |
| 1686 | if (list == &objfile->global_psymbols |
| 1687 | && !added) |
| 1688 | return; |
| 1689 | |
| 1690 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ |
| 1691 | append_psymbol_to_list (list, psym, objfile); |
| 1692 | } |
| 1693 | |
| 1694 | /* Initialize storage for partial symbols. */ |
| 1695 | |
| 1696 | void |
| 1697 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
| 1698 | { |
| 1699 | /* Free any previously allocated psymbol lists. */ |
| 1700 | |
| 1701 | if (objfile->global_psymbols.list) |
| 1702 | { |
| 1703 | xfree (objfile->global_psymbols.list); |
| 1704 | } |
| 1705 | if (objfile->static_psymbols.list) |
| 1706 | { |
| 1707 | xfree (objfile->static_psymbols.list); |
| 1708 | } |
| 1709 | |
| 1710 | /* Current best guess is that approximately a twentieth |
| 1711 | of the total symbols (in a debugging file) are global or static |
| 1712 | oriented symbols, then multiply that by slop factor of two. */ |
| 1713 | |
| 1714 | objfile->global_psymbols.size = total_symbols / 10; |
| 1715 | objfile->static_psymbols.size = total_symbols / 10; |
| 1716 | |
| 1717 | if (objfile->global_psymbols.size > 0) |
| 1718 | { |
| 1719 | objfile->global_psymbols.next = |
| 1720 | objfile->global_psymbols.list = (struct partial_symbol **) |
| 1721 | xmalloc ((objfile->global_psymbols.size |
| 1722 | * sizeof (struct partial_symbol *))); |
| 1723 | } |
| 1724 | if (objfile->static_psymbols.size > 0) |
| 1725 | { |
| 1726 | objfile->static_psymbols.next = |
| 1727 | objfile->static_psymbols.list = (struct partial_symbol **) |
| 1728 | xmalloc ((objfile->static_psymbols.size |
| 1729 | * sizeof (struct partial_symbol *))); |
| 1730 | } |
| 1731 | } |
| 1732 | |
| 1733 | struct partial_symtab * |
| 1734 | allocate_psymtab (const char *filename, struct objfile *objfile) |
| 1735 | { |
| 1736 | struct partial_symtab *psymtab; |
| 1737 | |
| 1738 | if (objfile->free_psymtabs) |
| 1739 | { |
| 1740 | psymtab = objfile->free_psymtabs; |
| 1741 | objfile->free_psymtabs = psymtab->next; |
| 1742 | } |
| 1743 | else |
| 1744 | psymtab = (struct partial_symtab *) |
| 1745 | obstack_alloc (&objfile->objfile_obstack, |
| 1746 | sizeof (struct partial_symtab)); |
| 1747 | |
| 1748 | memset (psymtab, 0, sizeof (struct partial_symtab)); |
| 1749 | psymtab->filename = bcache (filename, strlen (filename) + 1, |
| 1750 | objfile->per_bfd->filename_cache); |
| 1751 | psymtab->symtab = NULL; |
| 1752 | |
| 1753 | /* Prepend it to the psymtab list for the objfile it belongs to. |
| 1754 | Psymtabs are searched in most recent inserted -> least recent |
| 1755 | inserted order. */ |
| 1756 | |
| 1757 | psymtab->next = objfile->psymtabs; |
| 1758 | objfile->psymtabs = psymtab; |
| 1759 | |
| 1760 | if (symtab_create_debug) |
| 1761 | { |
| 1762 | /* Be a bit clever with debugging messages, and don't print objfile |
| 1763 | every time, only when it changes. */ |
| 1764 | static char *last_objfile_name = NULL; |
| 1765 | |
| 1766 | if (last_objfile_name == NULL |
| 1767 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
| 1768 | { |
| 1769 | xfree (last_objfile_name); |
| 1770 | last_objfile_name = xstrdup (objfile_name (objfile)); |
| 1771 | fprintf_unfiltered (gdb_stdlog, |
| 1772 | "Creating one or more psymtabs for objfile %s ...\n", |
| 1773 | last_objfile_name); |
| 1774 | } |
| 1775 | fprintf_unfiltered (gdb_stdlog, |
| 1776 | "Created psymtab %s for module %s.\n", |
| 1777 | host_address_to_string (psymtab), filename); |
| 1778 | } |
| 1779 | |
| 1780 | return (psymtab); |
| 1781 | } |
| 1782 | |
| 1783 | void |
| 1784 | discard_psymtab (struct objfile *objfile, struct partial_symtab *pst) |
| 1785 | { |
| 1786 | struct partial_symtab **prev_pst; |
| 1787 | |
| 1788 | /* From dbxread.c: |
| 1789 | Empty psymtabs happen as a result of header files which don't |
| 1790 | have any symbols in them. There can be a lot of them. But this |
| 1791 | check is wrong, in that a psymtab with N_SLINE entries but |
| 1792 | nothing else is not empty, but we don't realize that. Fixing |
| 1793 | that without slowing things down might be tricky. */ |
| 1794 | |
| 1795 | /* First, snip it out of the psymtab chain. */ |
| 1796 | |
| 1797 | prev_pst = &(objfile->psymtabs); |
| 1798 | while ((*prev_pst) != pst) |
| 1799 | prev_pst = &((*prev_pst)->next); |
| 1800 | (*prev_pst) = pst->next; |
| 1801 | |
| 1802 | /* Next, put it on a free list for recycling. */ |
| 1803 | |
| 1804 | pst->next = objfile->free_psymtabs; |
| 1805 | objfile->free_psymtabs = pst; |
| 1806 | } |
| 1807 | |
| 1808 | /* An object of this type is passed to discard_psymtabs_upto. */ |
| 1809 | |
| 1810 | struct psymtab_state |
| 1811 | { |
| 1812 | /* The objfile where psymtabs are discarded. */ |
| 1813 | |
| 1814 | struct objfile *objfile; |
| 1815 | |
| 1816 | /* The first psymtab to save. */ |
| 1817 | |
| 1818 | struct partial_symtab *save; |
| 1819 | }; |
| 1820 | |
| 1821 | /* A cleanup function used by make_cleanup_discard_psymtabs. */ |
| 1822 | |
| 1823 | static void |
| 1824 | discard_psymtabs_upto (void *arg) |
| 1825 | { |
| 1826 | struct psymtab_state *state = arg; |
| 1827 | |
| 1828 | while (state->objfile->psymtabs != state->save) |
| 1829 | discard_psymtab (state->objfile, state->objfile->psymtabs); |
| 1830 | } |
| 1831 | |
| 1832 | /* Return a new cleanup that discards all psymtabs created in OBJFILE |
| 1833 | after this function is called. */ |
| 1834 | |
| 1835 | struct cleanup * |
| 1836 | make_cleanup_discard_psymtabs (struct objfile *objfile) |
| 1837 | { |
| 1838 | struct psymtab_state *state = XNEW (struct psymtab_state); |
| 1839 | |
| 1840 | state->objfile = objfile; |
| 1841 | state->save = objfile->psymtabs; |
| 1842 | |
| 1843 | return make_cleanup_dtor (discard_psymtabs_upto, state, xfree); |
| 1844 | } |
| 1845 | |
| 1846 | \f |
| 1847 | |
| 1848 | static void |
| 1849 | maintenance_print_psymbols (char *args, int from_tty) |
| 1850 | { |
| 1851 | char **argv; |
| 1852 | struct ui_file *outfile; |
| 1853 | struct cleanup *cleanups; |
| 1854 | char *symname = NULL; |
| 1855 | char *filename = DEV_TTY; |
| 1856 | struct objfile *objfile; |
| 1857 | struct partial_symtab *ps; |
| 1858 | |
| 1859 | dont_repeat (); |
| 1860 | |
| 1861 | if (args == NULL) |
| 1862 | { |
| 1863 | error (_("\ |
| 1864 | print-psymbols takes an output file name and optional symbol file name")); |
| 1865 | } |
| 1866 | argv = gdb_buildargv (args); |
| 1867 | cleanups = make_cleanup_freeargv (argv); |
| 1868 | |
| 1869 | if (argv[0] != NULL) |
| 1870 | { |
| 1871 | filename = argv[0]; |
| 1872 | /* If a second arg is supplied, it is a source file name to match on. */ |
| 1873 | if (argv[1] != NULL) |
| 1874 | { |
| 1875 | symname = argv[1]; |
| 1876 | } |
| 1877 | } |
| 1878 | |
| 1879 | filename = tilde_expand (filename); |
| 1880 | make_cleanup (xfree, filename); |
| 1881 | |
| 1882 | outfile = gdb_fopen (filename, FOPEN_WT); |
| 1883 | if (outfile == 0) |
| 1884 | perror_with_name (filename); |
| 1885 | make_cleanup_ui_file_delete (outfile); |
| 1886 | |
| 1887 | ALL_PSYMTABS (objfile, ps) |
| 1888 | { |
| 1889 | QUIT; |
| 1890 | if (symname == NULL || filename_cmp (symname, ps->filename) == 0) |
| 1891 | dump_psymtab (objfile, ps, outfile); |
| 1892 | } |
| 1893 | do_cleanups (cleanups); |
| 1894 | } |
| 1895 | |
| 1896 | /* List all the partial symbol tables whose names match REGEXP (optional). */ |
| 1897 | static void |
| 1898 | maintenance_info_psymtabs (char *regexp, int from_tty) |
| 1899 | { |
| 1900 | struct program_space *pspace; |
| 1901 | struct objfile *objfile; |
| 1902 | |
| 1903 | if (regexp) |
| 1904 | re_comp (regexp); |
| 1905 | |
| 1906 | ALL_PSPACES (pspace) |
| 1907 | ALL_PSPACE_OBJFILES (pspace, objfile) |
| 1908 | { |
| 1909 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
| 1910 | struct partial_symtab *psymtab; |
| 1911 | |
| 1912 | /* We don't want to print anything for this objfile until we |
| 1913 | actually find a symtab whose name matches. */ |
| 1914 | int printed_objfile_start = 0; |
| 1915 | |
| 1916 | ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, psymtab) |
| 1917 | { |
| 1918 | QUIT; |
| 1919 | |
| 1920 | if (! regexp |
| 1921 | || re_exec (psymtab->filename)) |
| 1922 | { |
| 1923 | if (! printed_objfile_start) |
| 1924 | { |
| 1925 | printf_filtered ("{ objfile %s ", objfile_name (objfile)); |
| 1926 | wrap_here (" "); |
| 1927 | printf_filtered ("((struct objfile *) %s)\n", |
| 1928 | host_address_to_string (objfile)); |
| 1929 | printed_objfile_start = 1; |
| 1930 | } |
| 1931 | |
| 1932 | printf_filtered (" { psymtab %s ", psymtab->filename); |
| 1933 | wrap_here (" "); |
| 1934 | printf_filtered ("((struct partial_symtab *) %s)\n", |
| 1935 | host_address_to_string (psymtab)); |
| 1936 | |
| 1937 | printf_filtered (" readin %s\n", |
| 1938 | psymtab->readin ? "yes" : "no"); |
| 1939 | printf_filtered (" fullname %s\n", |
| 1940 | psymtab->fullname |
| 1941 | ? psymtab->fullname : "(null)"); |
| 1942 | printf_filtered (" text addresses "); |
| 1943 | fputs_filtered (paddress (gdbarch, psymtab->textlow), |
| 1944 | gdb_stdout); |
| 1945 | printf_filtered (" -- "); |
| 1946 | fputs_filtered (paddress (gdbarch, psymtab->texthigh), |
| 1947 | gdb_stdout); |
| 1948 | printf_filtered ("\n"); |
| 1949 | printf_filtered (" psymtabs_addrmap_supported %s\n", |
| 1950 | (psymtab->psymtabs_addrmap_supported |
| 1951 | ? "yes" : "no")); |
| 1952 | printf_filtered (" globals "); |
| 1953 | if (psymtab->n_global_syms) |
| 1954 | { |
| 1955 | printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n", |
| 1956 | host_address_to_string (objfile->global_psymbols.list |
| 1957 | + psymtab->globals_offset), |
| 1958 | psymtab->n_global_syms); |
| 1959 | } |
| 1960 | else |
| 1961 | printf_filtered ("(none)\n"); |
| 1962 | printf_filtered (" statics "); |
| 1963 | if (psymtab->n_static_syms) |
| 1964 | { |
| 1965 | printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n", |
| 1966 | host_address_to_string (objfile->static_psymbols.list |
| 1967 | + psymtab->statics_offset), |
| 1968 | psymtab->n_static_syms); |
| 1969 | } |
| 1970 | else |
| 1971 | printf_filtered ("(none)\n"); |
| 1972 | printf_filtered (" dependencies "); |
| 1973 | if (psymtab->number_of_dependencies) |
| 1974 | { |
| 1975 | int i; |
| 1976 | |
| 1977 | printf_filtered ("{\n"); |
| 1978 | for (i = 0; i < psymtab->number_of_dependencies; i++) |
| 1979 | { |
| 1980 | struct partial_symtab *dep = psymtab->dependencies[i]; |
| 1981 | |
| 1982 | /* Note the string concatenation there --- no comma. */ |
| 1983 | printf_filtered (" psymtab %s " |
| 1984 | "((struct partial_symtab *) %s)\n", |
| 1985 | dep->filename, |
| 1986 | host_address_to_string (dep)); |
| 1987 | } |
| 1988 | printf_filtered (" }\n"); |
| 1989 | } |
| 1990 | else |
| 1991 | printf_filtered ("(none)\n"); |
| 1992 | printf_filtered (" }\n"); |
| 1993 | } |
| 1994 | } |
| 1995 | |
| 1996 | if (printed_objfile_start) |
| 1997 | printf_filtered ("}\n"); |
| 1998 | } |
| 1999 | } |
| 2000 | |
| 2001 | /* Check consistency of currently expanded psymtabs vs symtabs. */ |
| 2002 | |
| 2003 | static void |
| 2004 | maintenance_check_psymtabs (char *ignore, int from_tty) |
| 2005 | { |
| 2006 | struct symbol *sym; |
| 2007 | struct partial_symbol **psym; |
| 2008 | struct symtab *s = NULL; |
| 2009 | struct partial_symtab *ps; |
| 2010 | const struct blockvector *bv; |
| 2011 | struct objfile *objfile; |
| 2012 | struct block *b; |
| 2013 | int length; |
| 2014 | |
| 2015 | ALL_PSYMTABS (objfile, ps) |
| 2016 | { |
| 2017 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
| 2018 | |
| 2019 | /* We don't call psymtab_to_symtab here because that may cause symtab |
| 2020 | expansion. When debugging a problem it helps if checkers leave |
| 2021 | things unchanged. */ |
| 2022 | s = ps->symtab; |
| 2023 | |
| 2024 | /* First do some checks that don't require the associated symtab. */ |
| 2025 | if (ps->texthigh < ps->textlow) |
| 2026 | { |
| 2027 | printf_filtered ("Psymtab "); |
| 2028 | puts_filtered (ps->filename); |
| 2029 | printf_filtered (" covers bad range "); |
| 2030 | fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout); |
| 2031 | printf_filtered (" - "); |
| 2032 | fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout); |
| 2033 | printf_filtered ("\n"); |
| 2034 | continue; |
| 2035 | } |
| 2036 | |
| 2037 | /* Now do checks requiring the associated symtab. */ |
| 2038 | if (s == NULL) |
| 2039 | continue; |
| 2040 | bv = BLOCKVECTOR (s); |
| 2041 | b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 2042 | psym = objfile->static_psymbols.list + ps->statics_offset; |
| 2043 | length = ps->n_static_syms; |
| 2044 | while (length--) |
| 2045 | { |
| 2046 | sym = block_lookup_symbol (b, SYMBOL_LINKAGE_NAME (*psym), |
| 2047 | SYMBOL_DOMAIN (*psym)); |
| 2048 | if (!sym) |
| 2049 | { |
| 2050 | printf_filtered ("Static symbol `"); |
| 2051 | puts_filtered (SYMBOL_LINKAGE_NAME (*psym)); |
| 2052 | printf_filtered ("' only found in "); |
| 2053 | puts_filtered (ps->filename); |
| 2054 | printf_filtered (" psymtab\n"); |
| 2055 | } |
| 2056 | psym++; |
| 2057 | } |
| 2058 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 2059 | psym = objfile->global_psymbols.list + ps->globals_offset; |
| 2060 | length = ps->n_global_syms; |
| 2061 | while (length--) |
| 2062 | { |
| 2063 | sym = block_lookup_symbol (b, SYMBOL_LINKAGE_NAME (*psym), |
| 2064 | SYMBOL_DOMAIN (*psym)); |
| 2065 | if (!sym) |
| 2066 | { |
| 2067 | printf_filtered ("Global symbol `"); |
| 2068 | puts_filtered (SYMBOL_LINKAGE_NAME (*psym)); |
| 2069 | printf_filtered ("' only found in "); |
| 2070 | puts_filtered (ps->filename); |
| 2071 | printf_filtered (" psymtab\n"); |
| 2072 | } |
| 2073 | psym++; |
| 2074 | } |
| 2075 | if (ps->texthigh != 0 |
| 2076 | && (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b))) |
| 2077 | { |
| 2078 | printf_filtered ("Psymtab "); |
| 2079 | puts_filtered (ps->filename); |
| 2080 | printf_filtered (" covers "); |
| 2081 | fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout); |
| 2082 | printf_filtered (" - "); |
| 2083 | fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout); |
| 2084 | printf_filtered (" but symtab covers only "); |
| 2085 | fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout); |
| 2086 | printf_filtered (" - "); |
| 2087 | fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout); |
| 2088 | printf_filtered ("\n"); |
| 2089 | } |
| 2090 | } |
| 2091 | } |
| 2092 | |
| 2093 | \f |
| 2094 | |
| 2095 | extern initialize_file_ftype _initialize_psymtab; |
| 2096 | |
| 2097 | void |
| 2098 | _initialize_psymtab (void) |
| 2099 | { |
| 2100 | add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, _("\ |
| 2101 | Print dump of current partial symbol definitions.\n\ |
| 2102 | Entries in the partial symbol table are dumped to file OUTFILE.\n\ |
| 2103 | If a SOURCE file is specified, dump only that file's partial symbols."), |
| 2104 | &maintenanceprintlist); |
| 2105 | |
| 2106 | add_cmd ("psymtabs", class_maintenance, maintenance_info_psymtabs, _("\ |
| 2107 | List the partial symbol tables for all object files.\n\ |
| 2108 | This does not include information about individual partial symbols,\n\ |
| 2109 | just the symbol table structures themselves."), |
| 2110 | &maintenanceinfolist); |
| 2111 | |
| 2112 | add_cmd ("check-psymtabs", class_maintenance, maintenance_check_psymtabs, |
| 2113 | _("\ |
| 2114 | Check consistency of currently expanded psymtabs versus symtabs."), |
| 2115 | &maintenancelist); |
| 2116 | } |