| 1 | /* Symbol table lookup for the GNU debugger, GDB. |
| 2 | Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998 |
| 3 | 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 2 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, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "symtab.h" |
| 24 | #include "gdbtypes.h" |
| 25 | #include "gdbcore.h" |
| 26 | #include "frame.h" |
| 27 | #include "target.h" |
| 28 | #include "value.h" |
| 29 | #include "symfile.h" |
| 30 | #include "objfiles.h" |
| 31 | #include "gdbcmd.h" |
| 32 | #include "call-cmds.h" |
| 33 | #include "gdb_regex.h" |
| 34 | #include "expression.h" |
| 35 | #include "language.h" |
| 36 | #include "demangle.h" |
| 37 | #include "inferior.h" |
| 38 | |
| 39 | #include "obstack.h" |
| 40 | |
| 41 | #include <sys/types.h> |
| 42 | #include <fcntl.h> |
| 43 | #include "gdb_string.h" |
| 44 | #include "gdb_stat.h" |
| 45 | #include <ctype.h> |
| 46 | |
| 47 | /* Prototype for one function in parser-defs.h, |
| 48 | instead of including that entire file. */ |
| 49 | |
| 50 | extern char *find_template_name_end (char *); |
| 51 | |
| 52 | /* Prototypes for local functions */ |
| 53 | |
| 54 | static int find_methods (struct type *, char *, struct symbol **); |
| 55 | |
| 56 | static void completion_list_add_name (char *, char *, int, char *, char *); |
| 57 | |
| 58 | static void build_canonical_line_spec (struct symtab_and_line *, |
| 59 | char *, char ***); |
| 60 | |
| 61 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], |
| 62 | int, int, char ***); |
| 63 | |
| 64 | static void rbreak_command (char *, int); |
| 65 | |
| 66 | static void types_info (char *, int); |
| 67 | |
| 68 | static void functions_info (char *, int); |
| 69 | |
| 70 | static void variables_info (char *, int); |
| 71 | |
| 72 | static void sources_info (char *, int); |
| 73 | |
| 74 | static void output_source_filename (char *, int *); |
| 75 | |
| 76 | char *operator_chars (char *, char **); |
| 77 | |
| 78 | static int find_line_common (struct linetable *, int, int *); |
| 79 | |
| 80 | static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *, |
| 81 | const char *, int, |
| 82 | namespace_enum); |
| 83 | |
| 84 | static struct symtab *lookup_symtab_1 (char *); |
| 85 | |
| 86 | static struct symbol *lookup_symbol_aux (const char *name, const |
| 87 | struct block *block, const |
| 88 | namespace_enum namespace, int |
| 89 | *is_a_field_of_this, struct |
| 90 | symtab **symtab); |
| 91 | |
| 92 | |
| 93 | static void cplusplus_hint (char *); |
| 94 | |
| 95 | static struct symbol *find_active_alias (struct symbol *sym, CORE_ADDR addr); |
| 96 | |
| 97 | /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */ |
| 98 | /* Signals the presence of objects compiled by HP compilers */ |
| 99 | int hp_som_som_object_present = 0; |
| 100 | |
| 101 | static void fixup_section (struct general_symbol_info *, struct objfile *); |
| 102 | |
| 103 | static int file_matches (char *, char **, int); |
| 104 | |
| 105 | static void print_symbol_info (namespace_enum, |
| 106 | struct symtab *, struct symbol *, int, char *); |
| 107 | |
| 108 | static void print_msymbol_info (struct minimal_symbol *); |
| 109 | |
| 110 | static void symtab_symbol_info (char *, namespace_enum, int); |
| 111 | |
| 112 | static void overload_list_add_symbol (struct symbol *sym, char *oload_name); |
| 113 | |
| 114 | void _initialize_symtab (void); |
| 115 | |
| 116 | /* */ |
| 117 | |
| 118 | /* The single non-language-specific builtin type */ |
| 119 | struct type *builtin_type_error; |
| 120 | |
| 121 | /* Block in which the most recently searched-for symbol was found. |
| 122 | Might be better to make this a parameter to lookup_symbol and |
| 123 | value_of_this. */ |
| 124 | |
| 125 | const struct block *block_found; |
| 126 | |
| 127 | char no_symtab_msg[] = "No symbol table is loaded. Use the \"file\" command."; |
| 128 | |
| 129 | /* While the C++ support is still in flux, issue a possibly helpful hint on |
| 130 | using the new command completion feature on single quoted demangled C++ |
| 131 | symbols. Remove when loose ends are cleaned up. FIXME -fnf */ |
| 132 | |
| 133 | static void |
| 134 | cplusplus_hint (char *name) |
| 135 | { |
| 136 | while (*name == '\'') |
| 137 | name++; |
| 138 | printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name, name); |
| 139 | printf_filtered ("(Note leading single quote.)\n"); |
| 140 | } |
| 141 | |
| 142 | /* Check for a symtab of a specific name; first in symtabs, then in |
| 143 | psymtabs. *If* there is no '/' in the name, a match after a '/' |
| 144 | in the symtab filename will also work. */ |
| 145 | |
| 146 | static struct symtab * |
| 147 | lookup_symtab_1 (char *name) |
| 148 | { |
| 149 | register struct symtab *s; |
| 150 | register struct partial_symtab *ps; |
| 151 | register char *slash; |
| 152 | register struct objfile *objfile; |
| 153 | |
| 154 | got_symtab: |
| 155 | |
| 156 | /* First, search for an exact match */ |
| 157 | |
| 158 | ALL_SYMTABS (objfile, s) |
| 159 | if (STREQ (name, s->filename)) |
| 160 | return s; |
| 161 | |
| 162 | slash = strchr (name, '/'); |
| 163 | |
| 164 | /* Now, search for a matching tail (only if name doesn't have any dirs) */ |
| 165 | |
| 166 | if (!slash) |
| 167 | ALL_SYMTABS (objfile, s) |
| 168 | { |
| 169 | char *p = s->filename; |
| 170 | char *tail = strrchr (p, '/'); |
| 171 | |
| 172 | if (tail) |
| 173 | p = tail + 1; |
| 174 | |
| 175 | if (STREQ (p, name)) |
| 176 | return s; |
| 177 | } |
| 178 | |
| 179 | /* Same search rules as above apply here, but now we look thru the |
| 180 | psymtabs. */ |
| 181 | |
| 182 | ps = lookup_partial_symtab (name); |
| 183 | if (!ps) |
| 184 | return (NULL); |
| 185 | |
| 186 | if (ps->readin) |
| 187 | error ("Internal: readin %s pst for `%s' found when no symtab found.", |
| 188 | ps->filename, name); |
| 189 | |
| 190 | s = PSYMTAB_TO_SYMTAB (ps); |
| 191 | |
| 192 | if (s) |
| 193 | return s; |
| 194 | |
| 195 | /* At this point, we have located the psymtab for this file, but |
| 196 | the conversion to a symtab has failed. This usually happens |
| 197 | when we are looking up an include file. In this case, |
| 198 | PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has |
| 199 | been created. So, we need to run through the symtabs again in |
| 200 | order to find the file. |
| 201 | XXX - This is a crock, and should be fixed inside of the the |
| 202 | symbol parsing routines. */ |
| 203 | goto got_symtab; |
| 204 | } |
| 205 | |
| 206 | /* Lookup the symbol table of a source file named NAME. Try a couple |
| 207 | of variations if the first lookup doesn't work. */ |
| 208 | |
| 209 | struct symtab * |
| 210 | lookup_symtab (char *name) |
| 211 | { |
| 212 | register struct symtab *s; |
| 213 | #if 0 |
| 214 | register char *copy; |
| 215 | #endif |
| 216 | |
| 217 | s = lookup_symtab_1 (name); |
| 218 | if (s) |
| 219 | return s; |
| 220 | |
| 221 | #if 0 |
| 222 | /* This screws c-exp.y:yylex if there is both a type "tree" and a symtab |
| 223 | "tree.c". */ |
| 224 | |
| 225 | /* If name not found as specified, see if adding ".c" helps. */ |
| 226 | /* Why is this? Is it just a user convenience? (If so, it's pretty |
| 227 | questionable in the presence of C++, FORTRAN, etc.). It's not in |
| 228 | the GDB manual. */ |
| 229 | |
| 230 | copy = (char *) alloca (strlen (name) + 3); |
| 231 | strcpy (copy, name); |
| 232 | strcat (copy, ".c"); |
| 233 | s = lookup_symtab_1 (copy); |
| 234 | if (s) |
| 235 | return s; |
| 236 | #endif /* 0 */ |
| 237 | |
| 238 | /* We didn't find anything; die. */ |
| 239 | return 0; |
| 240 | } |
| 241 | |
| 242 | /* Lookup the partial symbol table of a source file named NAME. |
| 243 | *If* there is no '/' in the name, a match after a '/' |
| 244 | in the psymtab filename will also work. */ |
| 245 | |
| 246 | struct partial_symtab * |
| 247 | lookup_partial_symtab (char *name) |
| 248 | { |
| 249 | register struct partial_symtab *pst; |
| 250 | register struct objfile *objfile; |
| 251 | |
| 252 | ALL_PSYMTABS (objfile, pst) |
| 253 | { |
| 254 | if (STREQ (name, pst->filename)) |
| 255 | { |
| 256 | return (pst); |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | /* Now, search for a matching tail (only if name doesn't have any dirs) */ |
| 261 | |
| 262 | if (!strchr (name, '/')) |
| 263 | ALL_PSYMTABS (objfile, pst) |
| 264 | { |
| 265 | char *p = pst->filename; |
| 266 | char *tail = strrchr (p, '/'); |
| 267 | |
| 268 | if (tail) |
| 269 | p = tail + 1; |
| 270 | |
| 271 | if (STREQ (p, name)) |
| 272 | return (pst); |
| 273 | } |
| 274 | |
| 275 | return (NULL); |
| 276 | } |
| 277 | \f |
| 278 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the |
| 279 | full method name, which consist of the class name (from T), the unadorned |
| 280 | method name from METHOD_ID, and the signature for the specific overload, |
| 281 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ |
| 282 | |
| 283 | char * |
| 284 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
| 285 | { |
| 286 | int mangled_name_len; |
| 287 | char *mangled_name; |
| 288 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); |
| 289 | struct fn_field *method = &f[signature_id]; |
| 290 | char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); |
| 291 | char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); |
| 292 | char *newname = type_name_no_tag (type); |
| 293 | |
| 294 | /* Does the form of physname indicate that it is the full mangled name |
| 295 | of a constructor (not just the args)? */ |
| 296 | int is_full_physname_constructor; |
| 297 | |
| 298 | int is_constructor; |
| 299 | int is_destructor = DESTRUCTOR_PREFIX_P (physname); |
| 300 | /* Need a new type prefix. */ |
| 301 | char *const_prefix = method->is_const ? "C" : ""; |
| 302 | char *volatile_prefix = method->is_volatile ? "V" : ""; |
| 303 | char buf[20]; |
| 304 | int len = (newname == NULL ? 0 : strlen (newname)); |
| 305 | |
| 306 | if (OPNAME_PREFIX_P (field_name)) |
| 307 | return xstrdup (physname); |
| 308 | |
| 309 | is_full_physname_constructor = |
| 310 | ((physname[0] == '_' && physname[1] == '_' && |
| 311 | (isdigit (physname[2]) || physname[2] == 'Q' || physname[2] == 't')) |
| 312 | || (strncmp (physname, "__ct", 4) == 0)); |
| 313 | |
| 314 | is_constructor = |
| 315 | is_full_physname_constructor || (newname && STREQ (field_name, newname)); |
| 316 | |
| 317 | if (!is_destructor) |
| 318 | is_destructor = (strncmp (physname, "__dt", 4) == 0); |
| 319 | |
| 320 | if (is_destructor || is_full_physname_constructor) |
| 321 | { |
| 322 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
| 323 | strcpy (mangled_name, physname); |
| 324 | return mangled_name; |
| 325 | } |
| 326 | |
| 327 | if (len == 0) |
| 328 | { |
| 329 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); |
| 330 | } |
| 331 | else if (physname[0] == 't' || physname[0] == 'Q') |
| 332 | { |
| 333 | /* The physname for template and qualified methods already includes |
| 334 | the class name. */ |
| 335 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); |
| 336 | newname = NULL; |
| 337 | len = 0; |
| 338 | } |
| 339 | else |
| 340 | { |
| 341 | sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len); |
| 342 | } |
| 343 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) |
| 344 | + strlen (buf) + len + strlen (physname) + 1); |
| 345 | |
| 346 | { |
| 347 | mangled_name = (char *) xmalloc (mangled_name_len); |
| 348 | if (is_constructor) |
| 349 | mangled_name[0] = '\0'; |
| 350 | else |
| 351 | strcpy (mangled_name, field_name); |
| 352 | } |
| 353 | strcat (mangled_name, buf); |
| 354 | /* If the class doesn't have a name, i.e. newname NULL, then we just |
| 355 | mangle it using 0 for the length of the class. Thus it gets mangled |
| 356 | as something starting with `::' rather than `classname::'. */ |
| 357 | if (newname != NULL) |
| 358 | strcat (mangled_name, newname); |
| 359 | |
| 360 | strcat (mangled_name, physname); |
| 361 | return (mangled_name); |
| 362 | } |
| 363 | \f |
| 364 | |
| 365 | |
| 366 | /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */ |
| 367 | |
| 368 | struct partial_symtab * |
| 369 | find_pc_sect_psymtab (CORE_ADDR pc, asection *section) |
| 370 | { |
| 371 | register struct partial_symtab *pst; |
| 372 | register struct objfile *objfile; |
| 373 | |
| 374 | ALL_PSYMTABS (objfile, pst) |
| 375 | { |
| 376 | if (pc >= pst->textlow && pc < pst->texthigh) |
| 377 | { |
| 378 | struct minimal_symbol *msymbol; |
| 379 | struct partial_symtab *tpst; |
| 380 | |
| 381 | /* An objfile that has its functions reordered might have |
| 382 | many partial symbol tables containing the PC, but |
| 383 | we want the partial symbol table that contains the |
| 384 | function containing the PC. */ |
| 385 | if (!(objfile->flags & OBJF_REORDERED) && |
| 386 | section == 0) /* can't validate section this way */ |
| 387 | return (pst); |
| 388 | |
| 389 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
| 390 | if (msymbol == NULL) |
| 391 | return (pst); |
| 392 | |
| 393 | for (tpst = pst; tpst != NULL; tpst = tpst->next) |
| 394 | { |
| 395 | if (pc >= tpst->textlow && pc < tpst->texthigh) |
| 396 | { |
| 397 | struct partial_symbol *p; |
| 398 | |
| 399 | p = find_pc_sect_psymbol (tpst, pc, section); |
| 400 | if (p != NULL |
| 401 | && SYMBOL_VALUE_ADDRESS (p) |
| 402 | == SYMBOL_VALUE_ADDRESS (msymbol)) |
| 403 | return (tpst); |
| 404 | } |
| 405 | } |
| 406 | return (pst); |
| 407 | } |
| 408 | } |
| 409 | return (NULL); |
| 410 | } |
| 411 | |
| 412 | /* Find which partial symtab contains PC. Return 0 if none. |
| 413 | Backward compatibility, no section */ |
| 414 | |
| 415 | struct partial_symtab * |
| 416 | find_pc_psymtab (CORE_ADDR pc) |
| 417 | { |
| 418 | return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc)); |
| 419 | } |
| 420 | |
| 421 | /* Find which partial symbol within a psymtab matches PC and SECTION. |
| 422 | Return 0 if none. Check all psymtabs if PSYMTAB is 0. */ |
| 423 | |
| 424 | struct partial_symbol * |
| 425 | find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc, |
| 426 | asection *section) |
| 427 | { |
| 428 | struct partial_symbol *best = NULL, *p, **pp; |
| 429 | CORE_ADDR best_pc; |
| 430 | |
| 431 | if (!psymtab) |
| 432 | psymtab = find_pc_sect_psymtab (pc, section); |
| 433 | if (!psymtab) |
| 434 | return 0; |
| 435 | |
| 436 | /* Cope with programs that start at address 0 */ |
| 437 | best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0; |
| 438 | |
| 439 | /* Search the global symbols as well as the static symbols, so that |
| 440 | find_pc_partial_function doesn't use a minimal symbol and thus |
| 441 | cache a bad endaddr. */ |
| 442 | for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset; |
| 443 | (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset) |
| 444 | < psymtab->n_global_syms); |
| 445 | pp++) |
| 446 | { |
| 447 | p = *pp; |
| 448 | if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE |
| 449 | && SYMBOL_CLASS (p) == LOC_BLOCK |
| 450 | && pc >= SYMBOL_VALUE_ADDRESS (p) |
| 451 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc |
| 452 | || (psymtab->textlow == 0 |
| 453 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) |
| 454 | { |
| 455 | if (section) /* match on a specific section */ |
| 456 | { |
| 457 | fixup_psymbol_section (p, psymtab->objfile); |
| 458 | if (SYMBOL_BFD_SECTION (p) != section) |
| 459 | continue; |
| 460 | } |
| 461 | best_pc = SYMBOL_VALUE_ADDRESS (p); |
| 462 | best = p; |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset; |
| 467 | (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset) |
| 468 | < psymtab->n_static_syms); |
| 469 | pp++) |
| 470 | { |
| 471 | p = *pp; |
| 472 | if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE |
| 473 | && SYMBOL_CLASS (p) == LOC_BLOCK |
| 474 | && pc >= SYMBOL_VALUE_ADDRESS (p) |
| 475 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc |
| 476 | || (psymtab->textlow == 0 |
| 477 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) |
| 478 | { |
| 479 | if (section) /* match on a specific section */ |
| 480 | { |
| 481 | fixup_psymbol_section (p, psymtab->objfile); |
| 482 | if (SYMBOL_BFD_SECTION (p) != section) |
| 483 | continue; |
| 484 | } |
| 485 | best_pc = SYMBOL_VALUE_ADDRESS (p); |
| 486 | best = p; |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | return best; |
| 491 | } |
| 492 | |
| 493 | /* Find which partial symbol within a psymtab matches PC. Return 0 if none. |
| 494 | Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */ |
| 495 | |
| 496 | struct partial_symbol * |
| 497 | find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc) |
| 498 | { |
| 499 | return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc)); |
| 500 | } |
| 501 | \f |
| 502 | /* Debug symbols usually don't have section information. We need to dig that |
| 503 | out of the minimal symbols and stash that in the debug symbol. */ |
| 504 | |
| 505 | static void |
| 506 | fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile) |
| 507 | { |
| 508 | struct minimal_symbol *msym; |
| 509 | msym = lookup_minimal_symbol (ginfo->name, NULL, objfile); |
| 510 | |
| 511 | if (msym) |
| 512 | { |
| 513 | ginfo->bfd_section = SYMBOL_BFD_SECTION (msym); |
| 514 | ginfo->section = SYMBOL_SECTION (msym); |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | struct symbol * |
| 519 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
| 520 | { |
| 521 | if (!sym) |
| 522 | return NULL; |
| 523 | |
| 524 | if (SYMBOL_BFD_SECTION (sym)) |
| 525 | return sym; |
| 526 | |
| 527 | fixup_section (&sym->ginfo, objfile); |
| 528 | |
| 529 | return sym; |
| 530 | } |
| 531 | |
| 532 | struct partial_symbol * |
| 533 | fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile) |
| 534 | { |
| 535 | if (!psym) |
| 536 | return NULL; |
| 537 | |
| 538 | if (SYMBOL_BFD_SECTION (psym)) |
| 539 | return psym; |
| 540 | |
| 541 | fixup_section (&psym->ginfo, objfile); |
| 542 | |
| 543 | return psym; |
| 544 | } |
| 545 | |
| 546 | /* Find the definition for a specified symbol name NAME |
| 547 | in namespace NAMESPACE, visible from lexical block BLOCK. |
| 548 | Returns the struct symbol pointer, or zero if no symbol is found. |
| 549 | If SYMTAB is non-NULL, store the symbol table in which the |
| 550 | symbol was found there, or NULL if not found. |
| 551 | C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if |
| 552 | NAME is a field of the current implied argument `this'. If so set |
| 553 | *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero. |
| 554 | BLOCK_FOUND is set to the block in which NAME is found (in the case of |
| 555 | a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */ |
| 556 | |
| 557 | /* This function has a bunch of loops in it and it would seem to be |
| 558 | attractive to put in some QUIT's (though I'm not really sure |
| 559 | whether it can run long enough to be really important). But there |
| 560 | are a few calls for which it would appear to be bad news to quit |
| 561 | out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and |
| 562 | nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++ |
| 563 | code below which can error(), but that probably doesn't affect |
| 564 | these calls since they are looking for a known variable and thus |
| 565 | can probably assume it will never hit the C++ code). */ |
| 566 | |
| 567 | struct symbol * |
| 568 | lookup_symbol (const char *name, const struct block *block, |
| 569 | const namespace_enum namespace, int *is_a_field_of_this, |
| 570 | struct symtab **symtab) |
| 571 | { |
| 572 | char *modified_name = NULL; |
| 573 | char *modified_name2 = NULL; |
| 574 | int needtofreename = 0; |
| 575 | struct symbol *returnval; |
| 576 | |
| 577 | if (case_sensitivity == case_sensitive_off) |
| 578 | { |
| 579 | char *copy; |
| 580 | int len, i; |
| 581 | |
| 582 | len = strlen (name); |
| 583 | copy = (char *) alloca (len + 1); |
| 584 | for (i= 0; i < len; i++) |
| 585 | copy[i] = tolower (name[i]); |
| 586 | copy[len] = 0; |
| 587 | modified_name = copy; |
| 588 | } |
| 589 | else |
| 590 | modified_name = (char *) name; |
| 591 | |
| 592 | /* If we are using C++ language, demangle the name before doing a lookup, so |
| 593 | we can always binary search. */ |
| 594 | if (current_language->la_language == language_cplus) |
| 595 | { |
| 596 | modified_name2 = cplus_demangle (modified_name, DMGL_ANSI | DMGL_PARAMS); |
| 597 | if (modified_name2) |
| 598 | { |
| 599 | modified_name = modified_name2; |
| 600 | needtofreename = 1; |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | returnval = lookup_symbol_aux (modified_name, block, namespace, |
| 605 | is_a_field_of_this, symtab); |
| 606 | if (needtofreename) |
| 607 | free (modified_name2); |
| 608 | |
| 609 | return returnval; |
| 610 | } |
| 611 | |
| 612 | static struct symbol * |
| 613 | lookup_symbol_aux (const char *name, const struct block *block, |
| 614 | const namespace_enum namespace, int *is_a_field_of_this, |
| 615 | struct symtab **symtab) |
| 616 | { |
| 617 | register struct symbol *sym; |
| 618 | register struct symtab *s = NULL; |
| 619 | register struct partial_symtab *ps; |
| 620 | register struct blockvector *bv; |
| 621 | register struct objfile *objfile = NULL; |
| 622 | register struct block *b; |
| 623 | register struct minimal_symbol *msymbol; |
| 624 | |
| 625 | |
| 626 | /* Search specified block and its superiors. */ |
| 627 | |
| 628 | while (block != 0) |
| 629 | { |
| 630 | sym = lookup_block_symbol (block, name, namespace); |
| 631 | if (sym) |
| 632 | { |
| 633 | block_found = block; |
| 634 | if (symtab != NULL) |
| 635 | { |
| 636 | /* Search the list of symtabs for one which contains the |
| 637 | address of the start of this block. */ |
| 638 | ALL_SYMTABS (objfile, s) |
| 639 | { |
| 640 | bv = BLOCKVECTOR (s); |
| 641 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 642 | if (BLOCK_START (b) <= BLOCK_START (block) |
| 643 | && BLOCK_END (b) > BLOCK_START (block)) |
| 644 | goto found; |
| 645 | } |
| 646 | found: |
| 647 | *symtab = s; |
| 648 | } |
| 649 | |
| 650 | return fixup_symbol_section (sym, objfile); |
| 651 | } |
| 652 | block = BLOCK_SUPERBLOCK (block); |
| 653 | } |
| 654 | |
| 655 | /* FIXME: this code is never executed--block is always NULL at this |
| 656 | point. What is it trying to do, anyway? We already should have |
| 657 | checked the STATIC_BLOCK above (it is the superblock of top-level |
| 658 | blocks). Why is VAR_NAMESPACE special-cased? */ |
| 659 | /* Don't need to mess with the psymtabs; if we have a block, |
| 660 | that file is read in. If we don't, then we deal later with |
| 661 | all the psymtab stuff that needs checking. */ |
| 662 | /* Note (RT): The following never-executed code looks unnecessary to me also. |
| 663 | * If we change the code to use the original (passed-in) |
| 664 | * value of 'block', we could cause it to execute, but then what |
| 665 | * would it do? The STATIC_BLOCK of the symtab containing the passed-in |
| 666 | * 'block' was already searched by the above code. And the STATIC_BLOCK's |
| 667 | * of *other* symtabs (those files not containing 'block' lexically) |
| 668 | * should not contain 'block' address-wise. So we wouldn't expect this |
| 669 | * code to find any 'sym''s that were not found above. I vote for |
| 670 | * deleting the following paragraph of code. |
| 671 | */ |
| 672 | if (namespace == VAR_NAMESPACE && block != NULL) |
| 673 | { |
| 674 | struct block *b; |
| 675 | /* Find the right symtab. */ |
| 676 | ALL_SYMTABS (objfile, s) |
| 677 | { |
| 678 | bv = BLOCKVECTOR (s); |
| 679 | b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 680 | if (BLOCK_START (b) <= BLOCK_START (block) |
| 681 | && BLOCK_END (b) > BLOCK_START (block)) |
| 682 | { |
| 683 | sym = lookup_block_symbol (b, name, VAR_NAMESPACE); |
| 684 | if (sym) |
| 685 | { |
| 686 | block_found = b; |
| 687 | if (symtab != NULL) |
| 688 | *symtab = s; |
| 689 | return fixup_symbol_section (sym, objfile); |
| 690 | } |
| 691 | } |
| 692 | } |
| 693 | } |
| 694 | |
| 695 | |
| 696 | /* C++: If requested to do so by the caller, |
| 697 | check to see if NAME is a field of `this'. */ |
| 698 | if (is_a_field_of_this) |
| 699 | { |
| 700 | struct value *v = value_of_this (0); |
| 701 | |
| 702 | *is_a_field_of_this = 0; |
| 703 | if (v && check_field (v, name)) |
| 704 | { |
| 705 | *is_a_field_of_this = 1; |
| 706 | if (symtab != NULL) |
| 707 | *symtab = NULL; |
| 708 | return NULL; |
| 709 | } |
| 710 | } |
| 711 | |
| 712 | /* Now search all global blocks. Do the symtab's first, then |
| 713 | check the psymtab's. If a psymtab indicates the existence |
| 714 | of the desired name as a global, then do psymtab-to-symtab |
| 715 | conversion on the fly and return the found symbol. */ |
| 716 | |
| 717 | ALL_SYMTABS (objfile, s) |
| 718 | { |
| 719 | bv = BLOCKVECTOR (s); |
| 720 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 721 | sym = lookup_block_symbol (block, name, namespace); |
| 722 | if (sym) |
| 723 | { |
| 724 | block_found = block; |
| 725 | if (symtab != NULL) |
| 726 | *symtab = s; |
| 727 | return fixup_symbol_section (sym, objfile); |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | #ifndef HPUXHPPA |
| 732 | |
| 733 | /* Check for the possibility of the symbol being a function or |
| 734 | a mangled variable that is stored in one of the minimal symbol tables. |
| 735 | Eventually, all global symbols might be resolved in this way. */ |
| 736 | |
| 737 | if (namespace == VAR_NAMESPACE) |
| 738 | { |
| 739 | msymbol = lookup_minimal_symbol (name, NULL, NULL); |
| 740 | if (msymbol != NULL) |
| 741 | { |
| 742 | s = find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol), |
| 743 | SYMBOL_BFD_SECTION (msymbol)); |
| 744 | if (s != NULL) |
| 745 | { |
| 746 | /* This is a function which has a symtab for its address. */ |
| 747 | bv = BLOCKVECTOR (s); |
| 748 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 749 | sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), |
| 750 | namespace); |
| 751 | /* We kept static functions in minimal symbol table as well as |
| 752 | in static scope. We want to find them in the symbol table. */ |
| 753 | if (!sym) |
| 754 | { |
| 755 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 756 | sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), |
| 757 | namespace); |
| 758 | } |
| 759 | |
| 760 | /* sym == 0 if symbol was found in the minimal symbol table |
| 761 | but not in the symtab. |
| 762 | Return 0 to use the msymbol definition of "foo_". |
| 763 | |
| 764 | This happens for Fortran "foo_" symbols, |
| 765 | which are "foo" in the symtab. |
| 766 | |
| 767 | This can also happen if "asm" is used to make a |
| 768 | regular symbol but not a debugging symbol, e.g. |
| 769 | asm(".globl _main"); |
| 770 | asm("_main:"); |
| 771 | */ |
| 772 | |
| 773 | if (symtab != NULL) |
| 774 | *symtab = s; |
| 775 | return fixup_symbol_section (sym, objfile); |
| 776 | } |
| 777 | else if (MSYMBOL_TYPE (msymbol) != mst_text |
| 778 | && MSYMBOL_TYPE (msymbol) != mst_file_text |
| 779 | && !STREQ (name, SYMBOL_NAME (msymbol))) |
| 780 | { |
| 781 | /* This is a mangled variable, look it up by its |
| 782 | mangled name. */ |
| 783 | return lookup_symbol (SYMBOL_NAME (msymbol), block, |
| 784 | namespace, is_a_field_of_this, symtab); |
| 785 | } |
| 786 | /* There are no debug symbols for this file, or we are looking |
| 787 | for an unmangled variable. |
| 788 | Try to find a matching static symbol below. */ |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | #endif |
| 793 | |
| 794 | ALL_PSYMTABS (objfile, ps) |
| 795 | { |
| 796 | if (!ps->readin && lookup_partial_symbol (ps, name, 1, namespace)) |
| 797 | { |
| 798 | s = PSYMTAB_TO_SYMTAB (ps); |
| 799 | bv = BLOCKVECTOR (s); |
| 800 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 801 | sym = lookup_block_symbol (block, name, namespace); |
| 802 | if (!sym) |
| 803 | { |
| 804 | /* This shouldn't be necessary, but as a last resort |
| 805 | * try looking in the statics even though the psymtab |
| 806 | * claimed the symbol was global. It's possible that |
| 807 | * the psymtab gets it wrong in some cases. |
| 808 | */ |
| 809 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 810 | sym = lookup_block_symbol (block, name, namespace); |
| 811 | if (!sym) |
| 812 | error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\ |
| 813 | %s may be an inlined function, or may be a template function\n\ |
| 814 | (if a template, try specifying an instantiation: %s<type>).", |
| 815 | name, ps->filename, name, name); |
| 816 | } |
| 817 | if (symtab != NULL) |
| 818 | *symtab = s; |
| 819 | return fixup_symbol_section (sym, objfile); |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | /* Now search all static file-level symbols. |
| 824 | Not strictly correct, but more useful than an error. |
| 825 | Do the symtabs first, then check the psymtabs. |
| 826 | If a psymtab indicates the existence |
| 827 | of the desired name as a file-level static, then do psymtab-to-symtab |
| 828 | conversion on the fly and return the found symbol. */ |
| 829 | |
| 830 | ALL_SYMTABS (objfile, s) |
| 831 | { |
| 832 | bv = BLOCKVECTOR (s); |
| 833 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 834 | sym = lookup_block_symbol (block, name, namespace); |
| 835 | if (sym) |
| 836 | { |
| 837 | block_found = block; |
| 838 | if (symtab != NULL) |
| 839 | *symtab = s; |
| 840 | return fixup_symbol_section (sym, objfile); |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | ALL_PSYMTABS (objfile, ps) |
| 845 | { |
| 846 | if (!ps->readin && lookup_partial_symbol (ps, name, 0, namespace)) |
| 847 | { |
| 848 | s = PSYMTAB_TO_SYMTAB (ps); |
| 849 | bv = BLOCKVECTOR (s); |
| 850 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 851 | sym = lookup_block_symbol (block, name, namespace); |
| 852 | if (!sym) |
| 853 | { |
| 854 | /* This shouldn't be necessary, but as a last resort |
| 855 | * try looking in the globals even though the psymtab |
| 856 | * claimed the symbol was static. It's possible that |
| 857 | * the psymtab gets it wrong in some cases. |
| 858 | */ |
| 859 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 860 | sym = lookup_block_symbol (block, name, namespace); |
| 861 | if (!sym) |
| 862 | error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\ |
| 863 | %s may be an inlined function, or may be a template function\n\ |
| 864 | (if a template, try specifying an instantiation: %s<type>).", |
| 865 | name, ps->filename, name, name); |
| 866 | } |
| 867 | if (symtab != NULL) |
| 868 | *symtab = s; |
| 869 | return fixup_symbol_section (sym, objfile); |
| 870 | } |
| 871 | } |
| 872 | |
| 873 | #ifdef HPUXHPPA |
| 874 | |
| 875 | /* Check for the possibility of the symbol being a function or |
| 876 | a global variable that is stored in one of the minimal symbol tables. |
| 877 | The "minimal symbol table" is built from linker-supplied info. |
| 878 | |
| 879 | RT: I moved this check to last, after the complete search of |
| 880 | the global (p)symtab's and static (p)symtab's. For HP-generated |
| 881 | symbol tables, this check was causing a premature exit from |
| 882 | lookup_symbol with NULL return, and thus messing up symbol lookups |
| 883 | of things like "c::f". It seems to me a check of the minimal |
| 884 | symbol table ought to be a last resort in any case. I'm vaguely |
| 885 | worried about the comment below which talks about FORTRAN routines "foo_" |
| 886 | though... is it saying we need to do the "minsym" check before |
| 887 | the static check in this case? |
| 888 | */ |
| 889 | |
| 890 | if (namespace == VAR_NAMESPACE) |
| 891 | { |
| 892 | msymbol = lookup_minimal_symbol (name, NULL, NULL); |
| 893 | if (msymbol != NULL) |
| 894 | { |
| 895 | /* OK, we found a minimal symbol in spite of not |
| 896 | * finding any symbol. There are various possible |
| 897 | * explanations for this. One possibility is the symbol |
| 898 | * exists in code not compiled -g. Another possibility |
| 899 | * is that the 'psymtab' isn't doing its job. |
| 900 | * A third possibility, related to #2, is that we were confused |
| 901 | * by name-mangling. For instance, maybe the psymtab isn't |
| 902 | * doing its job because it only know about demangled |
| 903 | * names, but we were given a mangled name... |
| 904 | */ |
| 905 | |
| 906 | /* We first use the address in the msymbol to try to |
| 907 | * locate the appropriate symtab. Note that find_pc_symtab() |
| 908 | * has a side-effect of doing psymtab-to-symtab expansion, |
| 909 | * for the found symtab. |
| 910 | */ |
| 911 | s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)); |
| 912 | if (s != NULL) |
| 913 | { |
| 914 | bv = BLOCKVECTOR (s); |
| 915 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 916 | sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), |
| 917 | namespace); |
| 918 | /* We kept static functions in minimal symbol table as well as |
| 919 | in static scope. We want to find them in the symbol table. */ |
| 920 | if (!sym) |
| 921 | { |
| 922 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 923 | sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), |
| 924 | namespace); |
| 925 | } |
| 926 | /* If we found one, return it */ |
| 927 | if (sym) |
| 928 | { |
| 929 | if (symtab != NULL) |
| 930 | *symtab = s; |
| 931 | return sym; |
| 932 | } |
| 933 | |
| 934 | /* If we get here with sym == 0, the symbol was |
| 935 | found in the minimal symbol table |
| 936 | but not in the symtab. |
| 937 | Fall through and return 0 to use the msymbol |
| 938 | definition of "foo_". |
| 939 | (Note that outer code generally follows up a call |
| 940 | to this routine with a call to lookup_minimal_symbol(), |
| 941 | so a 0 return means we'll just flow into that other routine). |
| 942 | |
| 943 | This happens for Fortran "foo_" symbols, |
| 944 | which are "foo" in the symtab. |
| 945 | |
| 946 | This can also happen if "asm" is used to make a |
| 947 | regular symbol but not a debugging symbol, e.g. |
| 948 | asm(".globl _main"); |
| 949 | asm("_main:"); |
| 950 | */ |
| 951 | } |
| 952 | |
| 953 | /* If the lookup-by-address fails, try repeating the |
| 954 | * entire lookup process with the symbol name from |
| 955 | * the msymbol (if different from the original symbol name). |
| 956 | */ |
| 957 | else if (MSYMBOL_TYPE (msymbol) != mst_text |
| 958 | && MSYMBOL_TYPE (msymbol) != mst_file_text |
| 959 | && !STREQ (name, SYMBOL_NAME (msymbol))) |
| 960 | { |
| 961 | return lookup_symbol (SYMBOL_NAME (msymbol), block, |
| 962 | namespace, is_a_field_of_this, symtab); |
| 963 | } |
| 964 | } |
| 965 | } |
| 966 | |
| 967 | #endif |
| 968 | |
| 969 | if (symtab != NULL) |
| 970 | *symtab = NULL; |
| 971 | return 0; |
| 972 | } |
| 973 | |
| 974 | /* Look, in partial_symtab PST, for symbol NAME. Check the global |
| 975 | symbols if GLOBAL, the static symbols if not */ |
| 976 | |
| 977 | static struct partial_symbol * |
| 978 | lookup_partial_symbol (struct partial_symtab *pst, const char *name, int global, |
| 979 | namespace_enum namespace) |
| 980 | { |
| 981 | struct partial_symbol *temp; |
| 982 | struct partial_symbol **start, **psym; |
| 983 | struct partial_symbol **top, **bottom, **center; |
| 984 | int length = (global ? pst->n_global_syms : pst->n_static_syms); |
| 985 | int do_linear_search = 1; |
| 986 | |
| 987 | if (length == 0) |
| 988 | { |
| 989 | return (NULL); |
| 990 | } |
| 991 | start = (global ? |
| 992 | pst->objfile->global_psymbols.list + pst->globals_offset : |
| 993 | pst->objfile->static_psymbols.list + pst->statics_offset); |
| 994 | |
| 995 | if (global) /* This means we can use a binary search. */ |
| 996 | { |
| 997 | do_linear_search = 0; |
| 998 | |
| 999 | /* Binary search. This search is guaranteed to end with center |
| 1000 | pointing at the earliest partial symbol with the correct |
| 1001 | name. At that point *all* partial symbols with that name |
| 1002 | will be checked against the correct namespace. */ |
| 1003 | |
| 1004 | bottom = start; |
| 1005 | top = start + length - 1; |
| 1006 | while (top > bottom) |
| 1007 | { |
| 1008 | center = bottom + (top - bottom) / 2; |
| 1009 | if (!(center < top)) |
| 1010 | abort (); |
| 1011 | if (!do_linear_search |
| 1012 | && (SYMBOL_LANGUAGE (*center) == language_java)) |
| 1013 | { |
| 1014 | do_linear_search = 1; |
| 1015 | } |
| 1016 | if (STRCMP (SYMBOL_SOURCE_NAME (*center), name) >= 0) |
| 1017 | { |
| 1018 | top = center; |
| 1019 | } |
| 1020 | else |
| 1021 | { |
| 1022 | bottom = center + 1; |
| 1023 | } |
| 1024 | } |
| 1025 | if (!(top == bottom)) |
| 1026 | abort (); |
| 1027 | |
| 1028 | /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so |
| 1029 | we don't have to force a linear search on C++. Probably holds true |
| 1030 | for JAVA as well, no way to check.*/ |
| 1031 | while (SYMBOL_MATCHES_NAME (*top,name)) |
| 1032 | { |
| 1033 | if (SYMBOL_NAMESPACE (*top) == namespace) |
| 1034 | { |
| 1035 | return (*top); |
| 1036 | } |
| 1037 | top++; |
| 1038 | } |
| 1039 | } |
| 1040 | |
| 1041 | /* Can't use a binary search or else we found during the binary search that |
| 1042 | we should also do a linear search. */ |
| 1043 | |
| 1044 | if (do_linear_search) |
| 1045 | { |
| 1046 | for (psym = start; psym < start + length; psym++) |
| 1047 | { |
| 1048 | if (namespace == SYMBOL_NAMESPACE (*psym)) |
| 1049 | { |
| 1050 | if (SYMBOL_MATCHES_NAME (*psym, name)) |
| 1051 | { |
| 1052 | return (*psym); |
| 1053 | } |
| 1054 | } |
| 1055 | } |
| 1056 | } |
| 1057 | |
| 1058 | return (NULL); |
| 1059 | } |
| 1060 | |
| 1061 | /* Look up a type named NAME in the struct_namespace. The type returned |
| 1062 | must not be opaque -- i.e., must have at least one field defined |
| 1063 | |
| 1064 | This code was modelled on lookup_symbol -- the parts not relevant to looking |
| 1065 | up types were just left out. In particular it's assumed here that types |
| 1066 | are available in struct_namespace and only at file-static or global blocks. */ |
| 1067 | |
| 1068 | |
| 1069 | struct type * |
| 1070 | lookup_transparent_type (const char *name) |
| 1071 | { |
| 1072 | register struct symbol *sym; |
| 1073 | register struct symtab *s = NULL; |
| 1074 | register struct partial_symtab *ps; |
| 1075 | struct blockvector *bv; |
| 1076 | register struct objfile *objfile; |
| 1077 | register struct block *block; |
| 1078 | |
| 1079 | /* Now search all the global symbols. Do the symtab's first, then |
| 1080 | check the psymtab's. If a psymtab indicates the existence |
| 1081 | of the desired name as a global, then do psymtab-to-symtab |
| 1082 | conversion on the fly and return the found symbol. */ |
| 1083 | |
| 1084 | ALL_SYMTABS (objfile, s) |
| 1085 | { |
| 1086 | bv = BLOCKVECTOR (s); |
| 1087 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 1088 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); |
| 1089 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
| 1090 | { |
| 1091 | return SYMBOL_TYPE (sym); |
| 1092 | } |
| 1093 | } |
| 1094 | |
| 1095 | ALL_PSYMTABS (objfile, ps) |
| 1096 | { |
| 1097 | if (!ps->readin && lookup_partial_symbol (ps, name, 1, STRUCT_NAMESPACE)) |
| 1098 | { |
| 1099 | s = PSYMTAB_TO_SYMTAB (ps); |
| 1100 | bv = BLOCKVECTOR (s); |
| 1101 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 1102 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); |
| 1103 | if (!sym) |
| 1104 | { |
| 1105 | /* This shouldn't be necessary, but as a last resort |
| 1106 | * try looking in the statics even though the psymtab |
| 1107 | * claimed the symbol was global. It's possible that |
| 1108 | * the psymtab gets it wrong in some cases. |
| 1109 | */ |
| 1110 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 1111 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); |
| 1112 | if (!sym) |
| 1113 | error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\ |
| 1114 | %s may be an inlined function, or may be a template function\n\ |
| 1115 | (if a template, try specifying an instantiation: %s<type>).", |
| 1116 | name, ps->filename, name, name); |
| 1117 | } |
| 1118 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
| 1119 | return SYMBOL_TYPE (sym); |
| 1120 | } |
| 1121 | } |
| 1122 | |
| 1123 | /* Now search the static file-level symbols. |
| 1124 | Not strictly correct, but more useful than an error. |
| 1125 | Do the symtab's first, then |
| 1126 | check the psymtab's. If a psymtab indicates the existence |
| 1127 | of the desired name as a file-level static, then do psymtab-to-symtab |
| 1128 | conversion on the fly and return the found symbol. |
| 1129 | */ |
| 1130 | |
| 1131 | ALL_SYMTABS (objfile, s) |
| 1132 | { |
| 1133 | bv = BLOCKVECTOR (s); |
| 1134 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 1135 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); |
| 1136 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
| 1137 | { |
| 1138 | return SYMBOL_TYPE (sym); |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | ALL_PSYMTABS (objfile, ps) |
| 1143 | { |
| 1144 | if (!ps->readin && lookup_partial_symbol (ps, name, 0, STRUCT_NAMESPACE)) |
| 1145 | { |
| 1146 | s = PSYMTAB_TO_SYMTAB (ps); |
| 1147 | bv = BLOCKVECTOR (s); |
| 1148 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 1149 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); |
| 1150 | if (!sym) |
| 1151 | { |
| 1152 | /* This shouldn't be necessary, but as a last resort |
| 1153 | * try looking in the globals even though the psymtab |
| 1154 | * claimed the symbol was static. It's possible that |
| 1155 | * the psymtab gets it wrong in some cases. |
| 1156 | */ |
| 1157 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 1158 | sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); |
| 1159 | if (!sym) |
| 1160 | error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\ |
| 1161 | %s may be an inlined function, or may be a template function\n\ |
| 1162 | (if a template, try specifying an instantiation: %s<type>).", |
| 1163 | name, ps->filename, name, name); |
| 1164 | } |
| 1165 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
| 1166 | return SYMBOL_TYPE (sym); |
| 1167 | } |
| 1168 | } |
| 1169 | return (struct type *) 0; |
| 1170 | } |
| 1171 | |
| 1172 | |
| 1173 | /* Find the psymtab containing main(). */ |
| 1174 | /* FIXME: What about languages without main() or specially linked |
| 1175 | executables that have no main() ? */ |
| 1176 | |
| 1177 | struct partial_symtab * |
| 1178 | find_main_psymtab (void) |
| 1179 | { |
| 1180 | register struct partial_symtab *pst; |
| 1181 | register struct objfile *objfile; |
| 1182 | |
| 1183 | ALL_PSYMTABS (objfile, pst) |
| 1184 | { |
| 1185 | if (lookup_partial_symbol (pst, "main", 1, VAR_NAMESPACE)) |
| 1186 | { |
| 1187 | return (pst); |
| 1188 | } |
| 1189 | } |
| 1190 | return (NULL); |
| 1191 | } |
| 1192 | |
| 1193 | /* Search BLOCK for symbol NAME in NAMESPACE. |
| 1194 | |
| 1195 | Note that if NAME is the demangled form of a C++ symbol, we will fail |
| 1196 | to find a match during the binary search of the non-encoded names, but |
| 1197 | for now we don't worry about the slight inefficiency of looking for |
| 1198 | a match we'll never find, since it will go pretty quick. Once the |
| 1199 | binary search terminates, we drop through and do a straight linear |
| 1200 | search on the symbols. Each symbol which is marked as being a C++ |
| 1201 | symbol (language_cplus set) has both the encoded and non-encoded names |
| 1202 | tested for a match. */ |
| 1203 | |
| 1204 | struct symbol * |
| 1205 | lookup_block_symbol (register const struct block *block, const char *name, |
| 1206 | const namespace_enum namespace) |
| 1207 | { |
| 1208 | register int bot, top, inc; |
| 1209 | register struct symbol *sym; |
| 1210 | register struct symbol *sym_found = NULL; |
| 1211 | register int do_linear_search = 1; |
| 1212 | |
| 1213 | /* If the blocks's symbols were sorted, start with a binary search. */ |
| 1214 | |
| 1215 | if (BLOCK_SHOULD_SORT (block)) |
| 1216 | { |
| 1217 | /* Reset the linear search flag so if the binary search fails, we |
| 1218 | won't do the linear search once unless we find some reason to |
| 1219 | do so */ |
| 1220 | |
| 1221 | do_linear_search = 0; |
| 1222 | top = BLOCK_NSYMS (block); |
| 1223 | bot = 0; |
| 1224 | |
| 1225 | /* Advance BOT to not far before the first symbol whose name is NAME. */ |
| 1226 | |
| 1227 | while (1) |
| 1228 | { |
| 1229 | inc = (top - bot + 1); |
| 1230 | /* No need to keep binary searching for the last few bits worth. */ |
| 1231 | if (inc < 4) |
| 1232 | { |
| 1233 | break; |
| 1234 | } |
| 1235 | inc = (inc >> 1) + bot; |
| 1236 | sym = BLOCK_SYM (block, inc); |
| 1237 | if (!do_linear_search && (SYMBOL_LANGUAGE (sym) == language_java)) |
| 1238 | { |
| 1239 | do_linear_search = 1; |
| 1240 | } |
| 1241 | if (SYMBOL_SOURCE_NAME (sym)[0] < name[0]) |
| 1242 | { |
| 1243 | bot = inc; |
| 1244 | } |
| 1245 | else if (SYMBOL_SOURCE_NAME (sym)[0] > name[0]) |
| 1246 | { |
| 1247 | top = inc; |
| 1248 | } |
| 1249 | else if (STRCMP (SYMBOL_SOURCE_NAME (sym), name) < 0) |
| 1250 | { |
| 1251 | bot = inc; |
| 1252 | } |
| 1253 | else |
| 1254 | { |
| 1255 | top = inc; |
| 1256 | } |
| 1257 | } |
| 1258 | |
| 1259 | /* Now scan forward until we run out of symbols, find one whose |
| 1260 | name is greater than NAME, or find one we want. If there is |
| 1261 | more than one symbol with the right name and namespace, we |
| 1262 | return the first one; I believe it is now impossible for us |
| 1263 | to encounter two symbols with the same name and namespace |
| 1264 | here, because blocks containing argument symbols are no |
| 1265 | longer sorted. */ |
| 1266 | |
| 1267 | top = BLOCK_NSYMS (block); |
| 1268 | while (bot < top) |
| 1269 | { |
| 1270 | sym = BLOCK_SYM (block, bot); |
| 1271 | if (SYMBOL_MATCHES_NAME (sym, name)) |
| 1272 | return sym; |
| 1273 | bot++; |
| 1274 | } |
| 1275 | } |
| 1276 | |
| 1277 | /* Here if block isn't sorted, or we fail to find a match during the |
| 1278 | binary search above. If during the binary search above, we find a |
| 1279 | symbol which is a C++ symbol, then we have re-enabled the linear |
| 1280 | search flag which was reset when starting the binary search. |
| 1281 | |
| 1282 | This loop is equivalent to the loop above, but hacked greatly for speed. |
| 1283 | |
| 1284 | Note that parameter symbols do not always show up last in the |
| 1285 | list; this loop makes sure to take anything else other than |
| 1286 | parameter symbols first; it only uses parameter symbols as a |
| 1287 | last resort. Note that this only takes up extra computation |
| 1288 | time on a match. */ |
| 1289 | |
| 1290 | if (do_linear_search) |
| 1291 | { |
| 1292 | top = BLOCK_NSYMS (block); |
| 1293 | bot = 0; |
| 1294 | while (bot < top) |
| 1295 | { |
| 1296 | sym = BLOCK_SYM (block, bot); |
| 1297 | if (SYMBOL_NAMESPACE (sym) == namespace && |
| 1298 | SYMBOL_MATCHES_NAME (sym, name)) |
| 1299 | { |
| 1300 | /* If SYM has aliases, then use any alias that is active |
| 1301 | at the current PC. If no alias is active at the current |
| 1302 | PC, then use the main symbol. |
| 1303 | |
| 1304 | ?!? Is checking the current pc correct? Is this routine |
| 1305 | ever called to look up a symbol from another context? |
| 1306 | |
| 1307 | FIXME: No, it's not correct. If someone sets a |
| 1308 | conditional breakpoint at an address, then the |
| 1309 | breakpoint's `struct expression' should refer to the |
| 1310 | `struct symbol' appropriate for the breakpoint's |
| 1311 | address, which may not be the PC. |
| 1312 | |
| 1313 | Even if it were never called from another context, |
| 1314 | it's totally bizarre for lookup_symbol's behavior to |
| 1315 | depend on the value of the inferior's current PC. We |
| 1316 | should pass in the appropriate PC as well as the |
| 1317 | block. The interface to lookup_symbol should change |
| 1318 | to require the caller to provide a PC. */ |
| 1319 | |
| 1320 | if (SYMBOL_ALIASES (sym)) |
| 1321 | sym = find_active_alias (sym, read_pc ()); |
| 1322 | |
| 1323 | sym_found = sym; |
| 1324 | if (SYMBOL_CLASS (sym) != LOC_ARG && |
| 1325 | SYMBOL_CLASS (sym) != LOC_LOCAL_ARG && |
| 1326 | SYMBOL_CLASS (sym) != LOC_REF_ARG && |
| 1327 | SYMBOL_CLASS (sym) != LOC_REGPARM && |
| 1328 | SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR && |
| 1329 | SYMBOL_CLASS (sym) != LOC_BASEREG_ARG) |
| 1330 | { |
| 1331 | break; |
| 1332 | } |
| 1333 | } |
| 1334 | bot++; |
| 1335 | } |
| 1336 | } |
| 1337 | return (sym_found); /* Will be NULL if not found. */ |
| 1338 | } |
| 1339 | |
| 1340 | /* Given a main symbol SYM and ADDR, search through the alias |
| 1341 | list to determine if an alias is active at ADDR and return |
| 1342 | the active alias. |
| 1343 | |
| 1344 | If no alias is active, then return SYM. */ |
| 1345 | |
| 1346 | static struct symbol * |
| 1347 | find_active_alias (struct symbol *sym, CORE_ADDR addr) |
| 1348 | { |
| 1349 | struct range_list *r; |
| 1350 | struct alias_list *aliases; |
| 1351 | |
| 1352 | /* If we have aliases, check them first. */ |
| 1353 | aliases = SYMBOL_ALIASES (sym); |
| 1354 | |
| 1355 | while (aliases) |
| 1356 | { |
| 1357 | if (!SYMBOL_RANGES (aliases->sym)) |
| 1358 | return aliases->sym; |
| 1359 | for (r = SYMBOL_RANGES (aliases->sym); r; r = r->next) |
| 1360 | { |
| 1361 | if (r->start <= addr && r->end > addr) |
| 1362 | return aliases->sym; |
| 1363 | } |
| 1364 | aliases = aliases->next; |
| 1365 | } |
| 1366 | |
| 1367 | /* Nothing found, return the main symbol. */ |
| 1368 | return sym; |
| 1369 | } |
| 1370 | \f |
| 1371 | |
| 1372 | /* Return the symbol for the function which contains a specified |
| 1373 | lexical block, described by a struct block BL. */ |
| 1374 | |
| 1375 | struct symbol * |
| 1376 | block_function (struct block *bl) |
| 1377 | { |
| 1378 | while (BLOCK_FUNCTION (bl) == 0 && BLOCK_SUPERBLOCK (bl) != 0) |
| 1379 | bl = BLOCK_SUPERBLOCK (bl); |
| 1380 | |
| 1381 | return BLOCK_FUNCTION (bl); |
| 1382 | } |
| 1383 | |
| 1384 | /* Find the symtab associated with PC and SECTION. Look through the |
| 1385 | psymtabs and read in another symtab if necessary. */ |
| 1386 | |
| 1387 | struct symtab * |
| 1388 | find_pc_sect_symtab (CORE_ADDR pc, asection *section) |
| 1389 | { |
| 1390 | register struct block *b; |
| 1391 | struct blockvector *bv; |
| 1392 | register struct symtab *s = NULL; |
| 1393 | register struct symtab *best_s = NULL; |
| 1394 | register struct partial_symtab *ps; |
| 1395 | register struct objfile *objfile; |
| 1396 | CORE_ADDR distance = 0; |
| 1397 | |
| 1398 | /* Search all symtabs for the one whose file contains our address, and which |
| 1399 | is the smallest of all the ones containing the address. This is designed |
| 1400 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 |
| 1401 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from |
| 1402 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. |
| 1403 | |
| 1404 | This happens for native ecoff format, where code from included files |
| 1405 | gets its own symtab. The symtab for the included file should have |
| 1406 | been read in already via the dependency mechanism. |
| 1407 | It might be swifter to create several symtabs with the same name |
| 1408 | like xcoff does (I'm not sure). |
| 1409 | |
| 1410 | It also happens for objfiles that have their functions reordered. |
| 1411 | For these, the symtab we are looking for is not necessarily read in. */ |
| 1412 | |
| 1413 | ALL_SYMTABS (objfile, s) |
| 1414 | { |
| 1415 | bv = BLOCKVECTOR (s); |
| 1416 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| 1417 | |
| 1418 | if (BLOCK_START (b) <= pc |
| 1419 | && BLOCK_END (b) > pc |
| 1420 | && (distance == 0 |
| 1421 | || BLOCK_END (b) - BLOCK_START (b) < distance)) |
| 1422 | { |
| 1423 | /* For an objfile that has its functions reordered, |
| 1424 | find_pc_psymtab will find the proper partial symbol table |
| 1425 | and we simply return its corresponding symtab. */ |
| 1426 | /* In order to better support objfiles that contain both |
| 1427 | stabs and coff debugging info, we continue on if a psymtab |
| 1428 | can't be found. */ |
| 1429 | if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs) |
| 1430 | { |
| 1431 | ps = find_pc_sect_psymtab (pc, section); |
| 1432 | if (ps) |
| 1433 | return PSYMTAB_TO_SYMTAB (ps); |
| 1434 | } |
| 1435 | if (section != 0) |
| 1436 | { |
| 1437 | int i; |
| 1438 | |
| 1439 | for (i = 0; i < b->nsyms; i++) |
| 1440 | { |
| 1441 | fixup_symbol_section (b->sym[i], objfile); |
| 1442 | if (section == SYMBOL_BFD_SECTION (b->sym[i])) |
| 1443 | break; |
| 1444 | } |
| 1445 | if (i >= b->nsyms) |
| 1446 | continue; /* no symbol in this symtab matches section */ |
| 1447 | } |
| 1448 | distance = BLOCK_END (b) - BLOCK_START (b); |
| 1449 | best_s = s; |
| 1450 | } |
| 1451 | } |
| 1452 | |
| 1453 | if (best_s != NULL) |
| 1454 | return (best_s); |
| 1455 | |
| 1456 | s = NULL; |
| 1457 | ps = find_pc_sect_psymtab (pc, section); |
| 1458 | if (ps) |
| 1459 | { |
| 1460 | if (ps->readin) |
| 1461 | /* Might want to error() here (in case symtab is corrupt and |
| 1462 | will cause a core dump), but maybe we can successfully |
| 1463 | continue, so let's not. */ |
| 1464 | warning ("\ |
| 1465 | (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n", |
| 1466 | paddr_nz (pc)); |
| 1467 | s = PSYMTAB_TO_SYMTAB (ps); |
| 1468 | } |
| 1469 | return (s); |
| 1470 | } |
| 1471 | |
| 1472 | /* Find the symtab associated with PC. Look through the psymtabs and |
| 1473 | read in another symtab if necessary. Backward compatibility, no section */ |
| 1474 | |
| 1475 | struct symtab * |
| 1476 | find_pc_symtab (CORE_ADDR pc) |
| 1477 | { |
| 1478 | return find_pc_sect_symtab (pc, find_pc_mapped_section (pc)); |
| 1479 | } |
| 1480 | \f |
| 1481 | |
| 1482 | #if 0 |
| 1483 | |
| 1484 | /* Find the closest symbol value (of any sort -- function or variable) |
| 1485 | for a given address value. Slow but complete. (currently unused, |
| 1486 | mainly because it is too slow. We could fix it if each symtab and |
| 1487 | psymtab had contained in it the addresses ranges of each of its |
| 1488 | sections, which also would be required to make things like "info |
| 1489 | line *0x2345" cause psymtabs to be converted to symtabs). */ |
| 1490 | |
| 1491 | struct symbol * |
| 1492 | find_addr_symbol (CORE_ADDR addr, struct symtab **symtabp, CORE_ADDR *symaddrp) |
| 1493 | { |
| 1494 | struct symtab *symtab, *best_symtab; |
| 1495 | struct objfile *objfile; |
| 1496 | register int bot, top; |
| 1497 | register struct symbol *sym; |
| 1498 | register CORE_ADDR sym_addr; |
| 1499 | struct block *block; |
| 1500 | int blocknum; |
| 1501 | |
| 1502 | /* Info on best symbol seen so far */ |
| 1503 | |
| 1504 | register CORE_ADDR best_sym_addr = 0; |
| 1505 | struct symbol *best_sym = 0; |
| 1506 | |
| 1507 | /* FIXME -- we should pull in all the psymtabs, too! */ |
| 1508 | ALL_SYMTABS (objfile, symtab) |
| 1509 | { |
| 1510 | /* Search the global and static blocks in this symtab for |
| 1511 | the closest symbol-address to the desired address. */ |
| 1512 | |
| 1513 | for (blocknum = GLOBAL_BLOCK; blocknum <= STATIC_BLOCK; blocknum++) |
| 1514 | { |
| 1515 | QUIT; |
| 1516 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), blocknum); |
| 1517 | top = BLOCK_NSYMS (block); |
| 1518 | for (bot = 0; bot < top; bot++) |
| 1519 | { |
| 1520 | sym = BLOCK_SYM (block, bot); |
| 1521 | switch (SYMBOL_CLASS (sym)) |
| 1522 | { |
| 1523 | case LOC_STATIC: |
| 1524 | case LOC_LABEL: |
| 1525 | sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
| 1526 | break; |
| 1527 | |
| 1528 | case LOC_INDIRECT: |
| 1529 | sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
| 1530 | /* An indirect symbol really lives at *sym_addr, |
| 1531 | * so an indirection needs to be done. |
| 1532 | * However, I am leaving this commented out because it's |
| 1533 | * expensive, and it's possible that symbolization |
| 1534 | * could be done without an active process (in |
| 1535 | * case this read_memory will fail). RT |
| 1536 | sym_addr = read_memory_unsigned_integer |
| 1537 | (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT); |
| 1538 | */ |
| 1539 | break; |
| 1540 | |
| 1541 | case LOC_BLOCK: |
| 1542 | sym_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
| 1543 | break; |
| 1544 | |
| 1545 | default: |
| 1546 | continue; |
| 1547 | } |
| 1548 | |
| 1549 | if (sym_addr <= addr) |
| 1550 | if (sym_addr > best_sym_addr) |
| 1551 | { |
| 1552 | /* Quit if we found an exact match. */ |
| 1553 | best_sym = sym; |
| 1554 | best_sym_addr = sym_addr; |
| 1555 | best_symtab = symtab; |
| 1556 | if (sym_addr == addr) |
| 1557 | goto done; |
| 1558 | } |
| 1559 | } |
| 1560 | } |
| 1561 | } |
| 1562 | |
| 1563 | done: |
| 1564 | if (symtabp) |
| 1565 | *symtabp = best_symtab; |
| 1566 | if (symaddrp) |
| 1567 | *symaddrp = best_sym_addr; |
| 1568 | return best_sym; |
| 1569 | } |
| 1570 | #endif /* 0 */ |
| 1571 | |
| 1572 | /* Find the source file and line number for a given PC value and section. |
| 1573 | Return a structure containing a symtab pointer, a line number, |
| 1574 | and a pc range for the entire source line. |
| 1575 | The value's .pc field is NOT the specified pc. |
| 1576 | NOTCURRENT nonzero means, if specified pc is on a line boundary, |
| 1577 | use the line that ends there. Otherwise, in that case, the line |
| 1578 | that begins there is used. */ |
| 1579 | |
| 1580 | /* The big complication here is that a line may start in one file, and end just |
| 1581 | before the start of another file. This usually occurs when you #include |
| 1582 | code in the middle of a subroutine. To properly find the end of a line's PC |
| 1583 | range, we must search all symtabs associated with this compilation unit, and |
| 1584 | find the one whose first PC is closer than that of the next line in this |
| 1585 | symtab. */ |
| 1586 | |
| 1587 | /* If it's worth the effort, we could be using a binary search. */ |
| 1588 | |
| 1589 | struct symtab_and_line |
| 1590 | find_pc_sect_line (CORE_ADDR pc, struct sec *section, int notcurrent) |
| 1591 | { |
| 1592 | struct symtab *s; |
| 1593 | register struct linetable *l; |
| 1594 | register int len; |
| 1595 | register int i; |
| 1596 | register struct linetable_entry *item; |
| 1597 | struct symtab_and_line val; |
| 1598 | struct blockvector *bv; |
| 1599 | struct minimal_symbol *msymbol; |
| 1600 | struct minimal_symbol *mfunsym; |
| 1601 | |
| 1602 | /* Info on best line seen so far, and where it starts, and its file. */ |
| 1603 | |
| 1604 | struct linetable_entry *best = NULL; |
| 1605 | CORE_ADDR best_end = 0; |
| 1606 | struct symtab *best_symtab = 0; |
| 1607 | |
| 1608 | /* Store here the first line number |
| 1609 | of a file which contains the line at the smallest pc after PC. |
| 1610 | If we don't find a line whose range contains PC, |
| 1611 | we will use a line one less than this, |
| 1612 | with a range from the start of that file to the first line's pc. */ |
| 1613 | struct linetable_entry *alt = NULL; |
| 1614 | struct symtab *alt_symtab = 0; |
| 1615 | |
| 1616 | /* Info on best line seen in this file. */ |
| 1617 | |
| 1618 | struct linetable_entry *prev; |
| 1619 | |
| 1620 | /* If this pc is not from the current frame, |
| 1621 | it is the address of the end of a call instruction. |
| 1622 | Quite likely that is the start of the following statement. |
| 1623 | But what we want is the statement containing the instruction. |
| 1624 | Fudge the pc to make sure we get that. */ |
| 1625 | |
| 1626 | INIT_SAL (&val); /* initialize to zeroes */ |
| 1627 | |
| 1628 | if (notcurrent) |
| 1629 | pc -= 1; |
| 1630 | |
| 1631 | /* elz: added this because this function returned the wrong |
| 1632 | information if the pc belongs to a stub (import/export) |
| 1633 | to call a shlib function. This stub would be anywhere between |
| 1634 | two functions in the target, and the line info was erroneously |
| 1635 | taken to be the one of the line before the pc. |
| 1636 | */ |
| 1637 | /* RT: Further explanation: |
| 1638 | |
| 1639 | * We have stubs (trampolines) inserted between procedures. |
| 1640 | * |
| 1641 | * Example: "shr1" exists in a shared library, and a "shr1" stub also |
| 1642 | * exists in the main image. |
| 1643 | * |
| 1644 | * In the minimal symbol table, we have a bunch of symbols |
| 1645 | * sorted by start address. The stubs are marked as "trampoline", |
| 1646 | * the others appear as text. E.g.: |
| 1647 | * |
| 1648 | * Minimal symbol table for main image |
| 1649 | * main: code for main (text symbol) |
| 1650 | * shr1: stub (trampoline symbol) |
| 1651 | * foo: code for foo (text symbol) |
| 1652 | * ... |
| 1653 | * Minimal symbol table for "shr1" image: |
| 1654 | * ... |
| 1655 | * shr1: code for shr1 (text symbol) |
| 1656 | * ... |
| 1657 | * |
| 1658 | * So the code below is trying to detect if we are in the stub |
| 1659 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), |
| 1660 | * and if found, do the symbolization from the real-code address |
| 1661 | * rather than the stub address. |
| 1662 | * |
| 1663 | * Assumptions being made about the minimal symbol table: |
| 1664 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only |
| 1665 | * if we're really in the trampoline. If we're beyond it (say |
| 1666 | * we're in "foo" in the above example), it'll have a closer |
| 1667 | * symbol (the "foo" text symbol for example) and will not |
| 1668 | * return the trampoline. |
| 1669 | * 2. lookup_minimal_symbol_text() will find a real text symbol |
| 1670 | * corresponding to the trampoline, and whose address will |
| 1671 | * be different than the trampoline address. I put in a sanity |
| 1672 | * check for the address being the same, to avoid an |
| 1673 | * infinite recursion. |
| 1674 | */ |
| 1675 | msymbol = lookup_minimal_symbol_by_pc (pc); |
| 1676 | if (msymbol != NULL) |
| 1677 | if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline) |
| 1678 | { |
| 1679 | mfunsym = lookup_minimal_symbol_text (SYMBOL_NAME (msymbol), NULL, NULL); |
| 1680 | if (mfunsym == NULL) |
| 1681 | /* I eliminated this warning since it is coming out |
| 1682 | * in the following situation: |
| 1683 | * gdb shmain // test program with shared libraries |
| 1684 | * (gdb) break shr1 // function in shared lib |
| 1685 | * Warning: In stub for ... |
| 1686 | * In the above situation, the shared lib is not loaded yet, |
| 1687 | * so of course we can't find the real func/line info, |
| 1688 | * but the "break" still works, and the warning is annoying. |
| 1689 | * So I commented out the warning. RT */ |
| 1690 | /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ; |
| 1691 | /* fall through */ |
| 1692 | else if (SYMBOL_VALUE (mfunsym) == SYMBOL_VALUE (msymbol)) |
| 1693 | /* Avoid infinite recursion */ |
| 1694 | /* See above comment about why warning is commented out */ |
| 1695 | /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ; |
| 1696 | /* fall through */ |
| 1697 | else |
| 1698 | return find_pc_line (SYMBOL_VALUE (mfunsym), 0); |
| 1699 | } |
| 1700 | |
| 1701 | |
| 1702 | s = find_pc_sect_symtab (pc, section); |
| 1703 | if (!s) |
| 1704 | { |
| 1705 | /* if no symbol information, return previous pc */ |
| 1706 | if (notcurrent) |
| 1707 | pc++; |
| 1708 | val.pc = pc; |
| 1709 | return val; |
| 1710 | } |
| 1711 | |
| 1712 | bv = BLOCKVECTOR (s); |
| 1713 | |
| 1714 | /* Look at all the symtabs that share this blockvector. |
| 1715 | They all have the same apriori range, that we found was right; |
| 1716 | but they have different line tables. */ |
| 1717 | |
| 1718 | for (; s && BLOCKVECTOR (s) == bv; s = s->next) |
| 1719 | { |
| 1720 | /* Find the best line in this symtab. */ |
| 1721 | l = LINETABLE (s); |
| 1722 | if (!l) |
| 1723 | continue; |
| 1724 | len = l->nitems; |
| 1725 | if (len <= 0) |
| 1726 | { |
| 1727 | /* I think len can be zero if the symtab lacks line numbers |
| 1728 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; |
| 1729 | I'm not sure which, and maybe it depends on the symbol |
| 1730 | reader). */ |
| 1731 | continue; |
| 1732 | } |
| 1733 | |
| 1734 | prev = NULL; |
| 1735 | item = l->item; /* Get first line info */ |
| 1736 | |
| 1737 | /* Is this file's first line closer than the first lines of other files? |
| 1738 | If so, record this file, and its first line, as best alternate. */ |
| 1739 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
| 1740 | { |
| 1741 | alt = item; |
| 1742 | alt_symtab = s; |
| 1743 | } |
| 1744 | |
| 1745 | for (i = 0; i < len; i++, item++) |
| 1746 | { |
| 1747 | /* Leave prev pointing to the linetable entry for the last line |
| 1748 | that started at or before PC. */ |
| 1749 | if (item->pc > pc) |
| 1750 | break; |
| 1751 | |
| 1752 | prev = item; |
| 1753 | } |
| 1754 | |
| 1755 | /* At this point, prev points at the line whose start addr is <= pc, and |
| 1756 | item points at the next line. If we ran off the end of the linetable |
| 1757 | (pc >= start of the last line), then prev == item. If pc < start of |
| 1758 | the first line, prev will not be set. */ |
| 1759 | |
| 1760 | /* Is this file's best line closer than the best in the other files? |
| 1761 | If so, record this file, and its best line, as best so far. */ |
| 1762 | |
| 1763 | if (prev && (!best || prev->pc > best->pc)) |
| 1764 | { |
| 1765 | best = prev; |
| 1766 | best_symtab = s; |
| 1767 | /* If another line is in the linetable, and its PC is closer |
| 1768 | than the best_end we currently have, take it as best_end. */ |
| 1769 | if (i < len && (best_end == 0 || best_end > item->pc)) |
| 1770 | best_end = item->pc; |
| 1771 | } |
| 1772 | } |
| 1773 | |
| 1774 | if (!best_symtab) |
| 1775 | { |
| 1776 | if (!alt_symtab) |
| 1777 | { /* If we didn't find any line # info, just |
| 1778 | return zeros. */ |
| 1779 | val.pc = pc; |
| 1780 | } |
| 1781 | else |
| 1782 | { |
| 1783 | val.symtab = alt_symtab; |
| 1784 | val.line = alt->line - 1; |
| 1785 | |
| 1786 | /* Don't return line 0, that means that we didn't find the line. */ |
| 1787 | if (val.line == 0) |
| 1788 | ++val.line; |
| 1789 | |
| 1790 | val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); |
| 1791 | val.end = alt->pc; |
| 1792 | } |
| 1793 | } |
| 1794 | else |
| 1795 | { |
| 1796 | val.symtab = best_symtab; |
| 1797 | val.line = best->line; |
| 1798 | val.pc = best->pc; |
| 1799 | if (best_end && (!alt || best_end < alt->pc)) |
| 1800 | val.end = best_end; |
| 1801 | else if (alt) |
| 1802 | val.end = alt->pc; |
| 1803 | else |
| 1804 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); |
| 1805 | } |
| 1806 | val.section = section; |
| 1807 | return val; |
| 1808 | } |
| 1809 | |
| 1810 | /* Backward compatibility (no section) */ |
| 1811 | |
| 1812 | struct symtab_and_line |
| 1813 | find_pc_line (CORE_ADDR pc, int notcurrent) |
| 1814 | { |
| 1815 | asection *section; |
| 1816 | |
| 1817 | section = find_pc_overlay (pc); |
| 1818 | if (pc_in_unmapped_range (pc, section)) |
| 1819 | pc = overlay_mapped_address (pc, section); |
| 1820 | return find_pc_sect_line (pc, section, notcurrent); |
| 1821 | } |
| 1822 | \f |
| 1823 | |
| 1824 | static struct symtab *find_line_symtab (struct symtab *, int, int *, int *); |
| 1825 | |
| 1826 | /* Find line number LINE in any symtab whose name is the same as |
| 1827 | SYMTAB. |
| 1828 | |
| 1829 | If found, return the symtab that contains the linetable in which it was |
| 1830 | found, set *INDEX to the index in the linetable of the best entry |
| 1831 | found, and set *EXACT_MATCH nonzero if the value returned is an |
| 1832 | exact match. |
| 1833 | |
| 1834 | If not found, return NULL. */ |
| 1835 | |
| 1836 | static struct symtab * |
| 1837 | find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match) |
| 1838 | { |
| 1839 | int exact; |
| 1840 | |
| 1841 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE |
| 1842 | so far seen. */ |
| 1843 | |
| 1844 | int best_index; |
| 1845 | struct linetable *best_linetable; |
| 1846 | struct symtab *best_symtab; |
| 1847 | |
| 1848 | /* First try looking it up in the given symtab. */ |
| 1849 | best_linetable = LINETABLE (symtab); |
| 1850 | best_symtab = symtab; |
| 1851 | best_index = find_line_common (best_linetable, line, &exact); |
| 1852 | if (best_index < 0 || !exact) |
| 1853 | { |
| 1854 | /* Didn't find an exact match. So we better keep looking for |
| 1855 | another symtab with the same name. In the case of xcoff, |
| 1856 | multiple csects for one source file (produced by IBM's FORTRAN |
| 1857 | compiler) produce multiple symtabs (this is unavoidable |
| 1858 | assuming csects can be at arbitrary places in memory and that |
| 1859 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ |
| 1860 | |
| 1861 | /* BEST is the smallest linenumber > LINE so far seen, |
| 1862 | or 0 if none has been seen so far. |
| 1863 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ |
| 1864 | int best; |
| 1865 | |
| 1866 | struct objfile *objfile; |
| 1867 | struct symtab *s; |
| 1868 | |
| 1869 | if (best_index >= 0) |
| 1870 | best = best_linetable->item[best_index].line; |
| 1871 | else |
| 1872 | best = 0; |
| 1873 | |
| 1874 | ALL_SYMTABS (objfile, s) |
| 1875 | { |
| 1876 | struct linetable *l; |
| 1877 | int ind; |
| 1878 | |
| 1879 | if (!STREQ (symtab->filename, s->filename)) |
| 1880 | continue; |
| 1881 | l = LINETABLE (s); |
| 1882 | ind = find_line_common (l, line, &exact); |
| 1883 | if (ind >= 0) |
| 1884 | { |
| 1885 | if (exact) |
| 1886 | { |
| 1887 | best_index = ind; |
| 1888 | best_linetable = l; |
| 1889 | best_symtab = s; |
| 1890 | goto done; |
| 1891 | } |
| 1892 | if (best == 0 || l->item[ind].line < best) |
| 1893 | { |
| 1894 | best = l->item[ind].line; |
| 1895 | best_index = ind; |
| 1896 | best_linetable = l; |
| 1897 | best_symtab = s; |
| 1898 | } |
| 1899 | } |
| 1900 | } |
| 1901 | } |
| 1902 | done: |
| 1903 | if (best_index < 0) |
| 1904 | return NULL; |
| 1905 | |
| 1906 | if (index) |
| 1907 | *index = best_index; |
| 1908 | if (exact_match) |
| 1909 | *exact_match = exact; |
| 1910 | |
| 1911 | return best_symtab; |
| 1912 | } |
| 1913 | \f |
| 1914 | /* Set the PC value for a given source file and line number and return true. |
| 1915 | Returns zero for invalid line number (and sets the PC to 0). |
| 1916 | The source file is specified with a struct symtab. */ |
| 1917 | |
| 1918 | int |
| 1919 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
| 1920 | { |
| 1921 | struct linetable *l; |
| 1922 | int ind; |
| 1923 | |
| 1924 | *pc = 0; |
| 1925 | if (symtab == 0) |
| 1926 | return 0; |
| 1927 | |
| 1928 | symtab = find_line_symtab (symtab, line, &ind, NULL); |
| 1929 | if (symtab != NULL) |
| 1930 | { |
| 1931 | l = LINETABLE (symtab); |
| 1932 | *pc = l->item[ind].pc; |
| 1933 | return 1; |
| 1934 | } |
| 1935 | else |
| 1936 | return 0; |
| 1937 | } |
| 1938 | |
| 1939 | /* Find the range of pc values in a line. |
| 1940 | Store the starting pc of the line into *STARTPTR |
| 1941 | and the ending pc (start of next line) into *ENDPTR. |
| 1942 | Returns 1 to indicate success. |
| 1943 | Returns 0 if could not find the specified line. */ |
| 1944 | |
| 1945 | int |
| 1946 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
| 1947 | CORE_ADDR *endptr) |
| 1948 | { |
| 1949 | CORE_ADDR startaddr; |
| 1950 | struct symtab_and_line found_sal; |
| 1951 | |
| 1952 | startaddr = sal.pc; |
| 1953 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
| 1954 | return 0; |
| 1955 | |
| 1956 | /* This whole function is based on address. For example, if line 10 has |
| 1957 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then |
| 1958 | "info line *0x123" should say the line goes from 0x100 to 0x200 |
| 1959 | and "info line *0x355" should say the line goes from 0x300 to 0x400. |
| 1960 | This also insures that we never give a range like "starts at 0x134 |
| 1961 | and ends at 0x12c". */ |
| 1962 | |
| 1963 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); |
| 1964 | if (found_sal.line != sal.line) |
| 1965 | { |
| 1966 | /* The specified line (sal) has zero bytes. */ |
| 1967 | *startptr = found_sal.pc; |
| 1968 | *endptr = found_sal.pc; |
| 1969 | } |
| 1970 | else |
| 1971 | { |
| 1972 | *startptr = found_sal.pc; |
| 1973 | *endptr = found_sal.end; |
| 1974 | } |
| 1975 | return 1; |
| 1976 | } |
| 1977 | |
| 1978 | /* Given a line table and a line number, return the index into the line |
| 1979 | table for the pc of the nearest line whose number is >= the specified one. |
| 1980 | Return -1 if none is found. The value is >= 0 if it is an index. |
| 1981 | |
| 1982 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ |
| 1983 | |
| 1984 | static int |
| 1985 | find_line_common (register struct linetable *l, register int lineno, |
| 1986 | int *exact_match) |
| 1987 | { |
| 1988 | register int i; |
| 1989 | register int len; |
| 1990 | |
| 1991 | /* BEST is the smallest linenumber > LINENO so far seen, |
| 1992 | or 0 if none has been seen so far. |
| 1993 | BEST_INDEX identifies the item for it. */ |
| 1994 | |
| 1995 | int best_index = -1; |
| 1996 | int best = 0; |
| 1997 | |
| 1998 | if (lineno <= 0) |
| 1999 | return -1; |
| 2000 | if (l == 0) |
| 2001 | return -1; |
| 2002 | |
| 2003 | len = l->nitems; |
| 2004 | for (i = 0; i < len; i++) |
| 2005 | { |
| 2006 | register struct linetable_entry *item = &(l->item[i]); |
| 2007 | |
| 2008 | if (item->line == lineno) |
| 2009 | { |
| 2010 | /* Return the first (lowest address) entry which matches. */ |
| 2011 | *exact_match = 1; |
| 2012 | return i; |
| 2013 | } |
| 2014 | |
| 2015 | if (item->line > lineno && (best == 0 || item->line < best)) |
| 2016 | { |
| 2017 | best = item->line; |
| 2018 | best_index = i; |
| 2019 | } |
| 2020 | } |
| 2021 | |
| 2022 | /* If we got here, we didn't get an exact match. */ |
| 2023 | |
| 2024 | *exact_match = 0; |
| 2025 | return best_index; |
| 2026 | } |
| 2027 | |
| 2028 | int |
| 2029 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
| 2030 | { |
| 2031 | struct symtab_and_line sal; |
| 2032 | sal = find_pc_line (pc, 0); |
| 2033 | *startptr = sal.pc; |
| 2034 | *endptr = sal.end; |
| 2035 | return sal.symtab != 0; |
| 2036 | } |
| 2037 | |
| 2038 | /* Given a function symbol SYM, find the symtab and line for the start |
| 2039 | of the function. |
| 2040 | If the argument FUNFIRSTLINE is nonzero, we want the first line |
| 2041 | of real code inside the function. */ |
| 2042 | |
| 2043 | static struct symtab_and_line |
| 2044 | find_function_start_sal (struct symbol *sym, int); |
| 2045 | |
| 2046 | static struct symtab_and_line |
| 2047 | find_function_start_sal (struct symbol *sym, int funfirstline) |
| 2048 | { |
| 2049 | CORE_ADDR pc; |
| 2050 | struct symtab_and_line sal; |
| 2051 | |
| 2052 | pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); |
| 2053 | fixup_symbol_section (sym, NULL); |
| 2054 | if (funfirstline) |
| 2055 | { /* skip "first line" of function (which is actually its prologue) */ |
| 2056 | asection *section = SYMBOL_BFD_SECTION (sym); |
| 2057 | /* If function is in an unmapped overlay, use its unmapped LMA |
| 2058 | address, so that SKIP_PROLOGUE has something unique to work on */ |
| 2059 | if (section_is_overlay (section) && |
| 2060 | !section_is_mapped (section)) |
| 2061 | pc = overlay_unmapped_address (pc, section); |
| 2062 | |
| 2063 | pc += FUNCTION_START_OFFSET; |
| 2064 | pc = SKIP_PROLOGUE (pc); |
| 2065 | |
| 2066 | /* For overlays, map pc back into its mapped VMA range */ |
| 2067 | pc = overlay_mapped_address (pc, section); |
| 2068 | } |
| 2069 | sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0); |
| 2070 | |
| 2071 | #ifdef PROLOGUE_FIRSTLINE_OVERLAP |
| 2072 | /* Convex: no need to suppress code on first line, if any */ |
| 2073 | sal.pc = pc; |
| 2074 | #else |
| 2075 | /* Check if SKIP_PROLOGUE left us in mid-line, and the next |
| 2076 | line is still part of the same function. */ |
| 2077 | if (sal.pc != pc |
| 2078 | && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end |
| 2079 | && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) |
| 2080 | { |
| 2081 | /* First pc of next line */ |
| 2082 | pc = sal.end; |
| 2083 | /* Recalculate the line number (might not be N+1). */ |
| 2084 | sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0); |
| 2085 | } |
| 2086 | sal.pc = pc; |
| 2087 | #endif |
| 2088 | |
| 2089 | return sal; |
| 2090 | } |
| 2091 | \f |
| 2092 | /* If P is of the form "operator[ \t]+..." where `...' is |
| 2093 | some legitimate operator text, return a pointer to the |
| 2094 | beginning of the substring of the operator text. |
| 2095 | Otherwise, return "". */ |
| 2096 | char * |
| 2097 | operator_chars (char *p, char **end) |
| 2098 | { |
| 2099 | *end = ""; |
| 2100 | if (strncmp (p, "operator", 8)) |
| 2101 | return *end; |
| 2102 | p += 8; |
| 2103 | |
| 2104 | /* Don't get faked out by `operator' being part of a longer |
| 2105 | identifier. */ |
| 2106 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
| 2107 | return *end; |
| 2108 | |
| 2109 | /* Allow some whitespace between `operator' and the operator symbol. */ |
| 2110 | while (*p == ' ' || *p == '\t') |
| 2111 | p++; |
| 2112 | |
| 2113 | /* Recognize 'operator TYPENAME'. */ |
| 2114 | |
| 2115 | if (isalpha (*p) || *p == '_' || *p == '$') |
| 2116 | { |
| 2117 | register char *q = p + 1; |
| 2118 | while (isalnum (*q) || *q == '_' || *q == '$') |
| 2119 | q++; |
| 2120 | *end = q; |
| 2121 | return p; |
| 2122 | } |
| 2123 | |
| 2124 | switch (*p) |
| 2125 | { |
| 2126 | case '!': |
| 2127 | case '=': |
| 2128 | case '*': |
| 2129 | case '/': |
| 2130 | case '%': |
| 2131 | case '^': |
| 2132 | if (p[1] == '=') |
| 2133 | *end = p + 2; |
| 2134 | else |
| 2135 | *end = p + 1; |
| 2136 | return p; |
| 2137 | case '<': |
| 2138 | case '>': |
| 2139 | case '+': |
| 2140 | case '-': |
| 2141 | case '&': |
| 2142 | case '|': |
| 2143 | if (p[1] == '=' || p[1] == p[0]) |
| 2144 | *end = p + 2; |
| 2145 | else |
| 2146 | *end = p + 1; |
| 2147 | return p; |
| 2148 | case '~': |
| 2149 | case ',': |
| 2150 | *end = p + 1; |
| 2151 | return p; |
| 2152 | case '(': |
| 2153 | if (p[1] != ')') |
| 2154 | error ("`operator ()' must be specified without whitespace in `()'"); |
| 2155 | *end = p + 2; |
| 2156 | return p; |
| 2157 | case '?': |
| 2158 | if (p[1] != ':') |
| 2159 | error ("`operator ?:' must be specified without whitespace in `?:'"); |
| 2160 | *end = p + 2; |
| 2161 | return p; |
| 2162 | case '[': |
| 2163 | if (p[1] != ']') |
| 2164 | error ("`operator []' must be specified without whitespace in `[]'"); |
| 2165 | *end = p + 2; |
| 2166 | return p; |
| 2167 | default: |
| 2168 | error ("`operator %s' not supported", p); |
| 2169 | break; |
| 2170 | } |
| 2171 | *end = ""; |
| 2172 | return *end; |
| 2173 | } |
| 2174 | |
| 2175 | /* Return the number of methods described for TYPE, including the |
| 2176 | methods from types it derives from. This can't be done in the symbol |
| 2177 | reader because the type of the baseclass might still be stubbed |
| 2178 | when the definition of the derived class is parsed. */ |
| 2179 | |
| 2180 | static int total_number_of_methods (struct type *type); |
| 2181 | |
| 2182 | static int |
| 2183 | total_number_of_methods (struct type *type) |
| 2184 | { |
| 2185 | int n; |
| 2186 | int count; |
| 2187 | |
| 2188 | CHECK_TYPEDEF (type); |
| 2189 | if (TYPE_CPLUS_SPECIFIC (type) == NULL) |
| 2190 | return 0; |
| 2191 | count = TYPE_NFN_FIELDS_TOTAL (type); |
| 2192 | |
| 2193 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) |
| 2194 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); |
| 2195 | |
| 2196 | return count; |
| 2197 | } |
| 2198 | |
| 2199 | /* Recursive helper function for decode_line_1. |
| 2200 | Look for methods named NAME in type T. |
| 2201 | Return number of matches. |
| 2202 | Put matches in SYM_ARR, which should have been allocated with |
| 2203 | a size of total_number_of_methods (T) * sizeof (struct symbol *). |
| 2204 | Note that this function is g++ specific. */ |
| 2205 | |
| 2206 | static int |
| 2207 | find_methods (struct type *t, char *name, struct symbol **sym_arr) |
| 2208 | { |
| 2209 | int i1 = 0; |
| 2210 | int ibase; |
| 2211 | struct symbol *sym_class; |
| 2212 | char *class_name = type_name_no_tag (t); |
| 2213 | |
| 2214 | /* Ignore this class if it doesn't have a name. This is ugly, but |
| 2215 | unless we figure out how to get the physname without the name of |
| 2216 | the class, then the loop can't do any good. */ |
| 2217 | if (class_name |
| 2218 | && (sym_class = lookup_symbol (class_name, |
| 2219 | (struct block *) NULL, |
| 2220 | STRUCT_NAMESPACE, |
| 2221 | (int *) NULL, |
| 2222 | (struct symtab **) NULL))) |
| 2223 | { |
| 2224 | int method_counter; |
| 2225 | |
| 2226 | /* FIXME: Shouldn't this just be CHECK_TYPEDEF (t)? */ |
| 2227 | t = SYMBOL_TYPE (sym_class); |
| 2228 | |
| 2229 | /* Loop over each method name. At this level, all overloads of a name |
| 2230 | are counted as a single name. There is an inner loop which loops over |
| 2231 | each overload. */ |
| 2232 | |
| 2233 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; |
| 2234 | method_counter >= 0; |
| 2235 | --method_counter) |
| 2236 | { |
| 2237 | int field_counter; |
| 2238 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); |
| 2239 | char dem_opname[64]; |
| 2240 | |
| 2241 | if (strncmp (method_name, "__", 2) == 0 || |
| 2242 | strncmp (method_name, "op", 2) == 0 || |
| 2243 | strncmp (method_name, "type", 4) == 0) |
| 2244 | { |
| 2245 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) |
| 2246 | method_name = dem_opname; |
| 2247 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) |
| 2248 | method_name = dem_opname; |
| 2249 | } |
| 2250 | |
| 2251 | if (STREQ (name, method_name)) |
| 2252 | /* Find all the overloaded methods with that name. */ |
| 2253 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; |
| 2254 | field_counter >= 0; |
| 2255 | --field_counter) |
| 2256 | { |
| 2257 | struct fn_field *f; |
| 2258 | char *phys_name; |
| 2259 | |
| 2260 | f = TYPE_FN_FIELDLIST1 (t, method_counter); |
| 2261 | |
| 2262 | if (TYPE_FN_FIELD_STUB (f, field_counter)) |
| 2263 | { |
| 2264 | char *tmp_name; |
| 2265 | |
| 2266 | tmp_name = gdb_mangle_name (t, |
| 2267 | method_counter, |
| 2268 | field_counter); |
| 2269 | phys_name = alloca (strlen (tmp_name) + 1); |
| 2270 | strcpy (phys_name, tmp_name); |
| 2271 | free (tmp_name); |
| 2272 | } |
| 2273 | else |
| 2274 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); |
| 2275 | |
| 2276 | /* Destructor is handled by caller, dont add it to the list */ |
| 2277 | if (DESTRUCTOR_PREFIX_P (phys_name)) |
| 2278 | continue; |
| 2279 | |
| 2280 | sym_arr[i1] = lookup_symbol (phys_name, |
| 2281 | NULL, VAR_NAMESPACE, |
| 2282 | (int *) NULL, |
| 2283 | (struct symtab **) NULL); |
| 2284 | if (sym_arr[i1]) |
| 2285 | i1++; |
| 2286 | else |
| 2287 | { |
| 2288 | /* This error message gets printed, but the method |
| 2289 | still seems to be found |
| 2290 | fputs_filtered("(Cannot find method ", gdb_stdout); |
| 2291 | fprintf_symbol_filtered (gdb_stdout, phys_name, |
| 2292 | language_cplus, |
| 2293 | DMGL_PARAMS | DMGL_ANSI); |
| 2294 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); |
| 2295 | */ |
| 2296 | } |
| 2297 | } |
| 2298 | } |
| 2299 | } |
| 2300 | |
| 2301 | /* Only search baseclasses if there is no match yet, since names in |
| 2302 | derived classes override those in baseclasses. |
| 2303 | |
| 2304 | FIXME: The above is not true; it is only true of member functions |
| 2305 | if they have the same number of arguments (??? - section 13.1 of the |
| 2306 | ARM says the function members are not in the same scope but doesn't |
| 2307 | really spell out the rules in a way I understand. In any case, if |
| 2308 | the number of arguments differ this is a case in which we can overload |
| 2309 | rather than hiding without any problem, and gcc 2.4.5 does overload |
| 2310 | rather than hiding in this case). */ |
| 2311 | |
| 2312 | if (i1 == 0) |
| 2313 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) |
| 2314 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, sym_arr + i1); |
| 2315 | |
| 2316 | return i1; |
| 2317 | } |
| 2318 | |
| 2319 | /* Helper function for decode_line_1. |
| 2320 | Build a canonical line spec in CANONICAL if it is non-NULL and if |
| 2321 | the SAL has a symtab. |
| 2322 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. |
| 2323 | If SYMNAME is NULL the line number from SAL is used and the canonical |
| 2324 | line spec is `filename:linenum'. */ |
| 2325 | |
| 2326 | static void |
| 2327 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, |
| 2328 | char ***canonical) |
| 2329 | { |
| 2330 | char **canonical_arr; |
| 2331 | char *canonical_name; |
| 2332 | char *filename; |
| 2333 | struct symtab *s = sal->symtab; |
| 2334 | |
| 2335 | if (s == (struct symtab *) NULL |
| 2336 | || s->filename == (char *) NULL |
| 2337 | || canonical == (char ***) NULL) |
| 2338 | return; |
| 2339 | |
| 2340 | canonical_arr = (char **) xmalloc (sizeof (char *)); |
| 2341 | *canonical = canonical_arr; |
| 2342 | |
| 2343 | filename = s->filename; |
| 2344 | if (symname != NULL) |
| 2345 | { |
| 2346 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); |
| 2347 | sprintf (canonical_name, "%s:%s", filename, symname); |
| 2348 | } |
| 2349 | else |
| 2350 | { |
| 2351 | canonical_name = xmalloc (strlen (filename) + 30); |
| 2352 | sprintf (canonical_name, "%s:%d", filename, sal->line); |
| 2353 | } |
| 2354 | canonical_arr[0] = canonical_name; |
| 2355 | } |
| 2356 | |
| 2357 | |
| 2358 | |
| 2359 | /* Find an instance of the character C in the string S that is outside |
| 2360 | of all parenthesis pairs, single-quoted strings, and double-quoted |
| 2361 | strings. */ |
| 2362 | static char * |
| 2363 | find_toplevel_char (char *s, char c) |
| 2364 | { |
| 2365 | int quoted = 0; /* zero if we're not in quotes; |
| 2366 | '"' if we're in a double-quoted string; |
| 2367 | '\'' if we're in a single-quoted string. */ |
| 2368 | int depth = 0; /* number of unclosed parens we've seen */ |
| 2369 | char *scan; |
| 2370 | |
| 2371 | for (scan = s; *scan; scan++) |
| 2372 | { |
| 2373 | if (quoted) |
| 2374 | { |
| 2375 | if (*scan == quoted) |
| 2376 | quoted = 0; |
| 2377 | else if (*scan == '\\' && *(scan + 1)) |
| 2378 | scan++; |
| 2379 | } |
| 2380 | else if (*scan == c && ! quoted && depth == 0) |
| 2381 | return scan; |
| 2382 | else if (*scan == '"' || *scan == '\'') |
| 2383 | quoted = *scan; |
| 2384 | else if (*scan == '(') |
| 2385 | depth++; |
| 2386 | else if (*scan == ')' && depth > 0) |
| 2387 | depth--; |
| 2388 | } |
| 2389 | |
| 2390 | return 0; |
| 2391 | } |
| 2392 | |
| 2393 | |
| 2394 | /* Parse a string that specifies a line number. |
| 2395 | Pass the address of a char * variable; that variable will be |
| 2396 | advanced over the characters actually parsed. |
| 2397 | |
| 2398 | The string can be: |
| 2399 | |
| 2400 | LINENUM -- that line number in current file. PC returned is 0. |
| 2401 | FILE:LINENUM -- that line in that file. PC returned is 0. |
| 2402 | FUNCTION -- line number of openbrace of that function. |
| 2403 | PC returned is the start of the function. |
| 2404 | VARIABLE -- line number of definition of that variable. |
| 2405 | PC returned is 0. |
| 2406 | FILE:FUNCTION -- likewise, but prefer functions in that file. |
| 2407 | *EXPR -- line in which address EXPR appears. |
| 2408 | |
| 2409 | This may all be followed by an "if EXPR", which we ignore. |
| 2410 | |
| 2411 | FUNCTION may be an undebuggable function found in minimal symbol table. |
| 2412 | |
| 2413 | If the argument FUNFIRSTLINE is nonzero, we want the first line |
| 2414 | of real code inside a function when a function is specified, and it is |
| 2415 | not OK to specify a variable or type to get its line number. |
| 2416 | |
| 2417 | DEFAULT_SYMTAB specifies the file to use if none is specified. |
| 2418 | It defaults to current_source_symtab. |
| 2419 | DEFAULT_LINE specifies the line number to use for relative |
| 2420 | line numbers (that start with signs). Defaults to current_source_line. |
| 2421 | If CANONICAL is non-NULL, store an array of strings containing the canonical |
| 2422 | line specs there if necessary. Currently overloaded member functions and |
| 2423 | line numbers or static functions without a filename yield a canonical |
| 2424 | line spec. The array and the line spec strings are allocated on the heap, |
| 2425 | it is the callers responsibility to free them. |
| 2426 | |
| 2427 | Note that it is possible to return zero for the symtab |
| 2428 | if no file is validly specified. Callers must check that. |
| 2429 | Also, the line number returned may be invalid. */ |
| 2430 | |
| 2431 | /* We allow single quotes in various places. This is a hideous |
| 2432 | kludge, which exists because the completer can't yet deal with the |
| 2433 | lack of single quotes. FIXME: write a linespec_completer which we |
| 2434 | can use as appropriate instead of make_symbol_completion_list. */ |
| 2435 | |
| 2436 | struct symtabs_and_lines |
| 2437 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, |
| 2438 | int default_line, char ***canonical) |
| 2439 | { |
| 2440 | struct symtabs_and_lines values; |
| 2441 | #ifdef HPPA_COMPILER_BUG |
| 2442 | /* FIXME: The native HP 9000/700 compiler has a bug which appears |
| 2443 | when optimizing this file with target i960-vxworks. I haven't |
| 2444 | been able to construct a simple test case. The problem is that |
| 2445 | in the second call to SKIP_PROLOGUE below, the compiler somehow |
| 2446 | does not realize that the statement val = find_pc_line (...) will |
| 2447 | change the values of the fields of val. It extracts the elements |
| 2448 | into registers at the top of the block, and does not update the |
| 2449 | registers after the call to find_pc_line. You can check this by |
| 2450 | inserting a printf at the end of find_pc_line to show what values |
| 2451 | it is returning for val.pc and val.end and another printf after |
| 2452 | the call to see what values the function actually got (remember, |
| 2453 | this is compiling with cc -O, with this patch removed). You can |
| 2454 | also examine the assembly listing: search for the second call to |
| 2455 | skip_prologue; the LDO statement before the next call to |
| 2456 | find_pc_line loads the address of the structure which |
| 2457 | find_pc_line will return; if there is a LDW just before the LDO, |
| 2458 | which fetches an element of the structure, then the compiler |
| 2459 | still has the bug. |
| 2460 | |
| 2461 | Setting val to volatile avoids the problem. We must undef |
| 2462 | volatile, because the HPPA native compiler does not define |
| 2463 | __STDC__, although it does understand volatile, and so volatile |
| 2464 | will have been defined away in defs.h. */ |
| 2465 | #undef volatile |
| 2466 | volatile struct symtab_and_line val; |
| 2467 | #define volatile /*nothing */ |
| 2468 | #else |
| 2469 | struct symtab_and_line val; |
| 2470 | #endif |
| 2471 | register char *p, *p1; |
| 2472 | char *q, *pp, *ii, *p2; |
| 2473 | #if 0 |
| 2474 | char *q1; |
| 2475 | #endif |
| 2476 | register struct symtab *s; |
| 2477 | |
| 2478 | register struct symbol *sym; |
| 2479 | /* The symtab that SYM was found in. */ |
| 2480 | struct symtab *sym_symtab; |
| 2481 | |
| 2482 | register CORE_ADDR pc; |
| 2483 | register struct minimal_symbol *msymbol; |
| 2484 | char *copy; |
| 2485 | struct symbol *sym_class; |
| 2486 | int i1; |
| 2487 | int is_quoted; |
| 2488 | int is_quote_enclosed; |
| 2489 | int has_parens; |
| 2490 | int has_if = 0; |
| 2491 | int has_comma = 0; |
| 2492 | struct symbol **sym_arr; |
| 2493 | struct type *t; |
| 2494 | char *saved_arg = *argptr; |
| 2495 | extern char *gdb_completer_quote_characters; |
| 2496 | |
| 2497 | INIT_SAL (&val); /* initialize to zeroes */ |
| 2498 | |
| 2499 | /* Defaults have defaults. */ |
| 2500 | |
| 2501 | if (default_symtab == 0) |
| 2502 | { |
| 2503 | default_symtab = current_source_symtab; |
| 2504 | default_line = current_source_line; |
| 2505 | } |
| 2506 | |
| 2507 | /* See if arg is *PC */ |
| 2508 | |
| 2509 | if (**argptr == '*') |
| 2510 | { |
| 2511 | (*argptr)++; |
| 2512 | pc = parse_and_eval_address_1 (argptr); |
| 2513 | |
| 2514 | values.sals = (struct symtab_and_line *) |
| 2515 | xmalloc (sizeof (struct symtab_and_line)); |
| 2516 | |
| 2517 | values.nelts = 1; |
| 2518 | values.sals[0] = find_pc_line (pc, 0); |
| 2519 | values.sals[0].pc = pc; |
| 2520 | values.sals[0].section = find_pc_overlay (pc); |
| 2521 | |
| 2522 | return values; |
| 2523 | } |
| 2524 | |
| 2525 | /* 'has_if' is for the syntax: |
| 2526 | * (gdb) break foo if (a==b) |
| 2527 | */ |
| 2528 | if ((ii = strstr (*argptr, " if ")) != NULL || |
| 2529 | (ii = strstr (*argptr, "\tif ")) != NULL || |
| 2530 | (ii = strstr (*argptr, " if\t")) != NULL || |
| 2531 | (ii = strstr (*argptr, "\tif\t")) != NULL || |
| 2532 | (ii = strstr (*argptr, " if(")) != NULL || |
| 2533 | (ii = strstr (*argptr, "\tif( ")) != NULL) |
| 2534 | has_if = 1; |
| 2535 | /* Temporarily zap out "if (condition)" to not |
| 2536 | * confuse the parenthesis-checking code below. |
| 2537 | * This is undone below. Do not change ii!! |
| 2538 | */ |
| 2539 | if (has_if) |
| 2540 | { |
| 2541 | *ii = '\0'; |
| 2542 | } |
| 2543 | |
| 2544 | /* Set various flags. |
| 2545 | * 'has_parens' is important for overload checking, where |
| 2546 | * we allow things like: |
| 2547 | * (gdb) break c::f(int) |
| 2548 | */ |
| 2549 | |
| 2550 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ |
| 2551 | |
| 2552 | is_quoted = (**argptr |
| 2553 | && strchr (gdb_completer_quote_characters, **argptr) != NULL); |
| 2554 | |
| 2555 | has_parens = ((pp = strchr (*argptr, '(')) != NULL |
| 2556 | && (pp = strrchr (pp, ')')) != NULL); |
| 2557 | |
| 2558 | /* Now that we're safely past the has_parens check, |
| 2559 | * put back " if (condition)" so outer layers can see it |
| 2560 | */ |
| 2561 | if (has_if) |
| 2562 | *ii = ' '; |
| 2563 | |
| 2564 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM |
| 2565 | and we must isolate the first half. Outer layers will call again later |
| 2566 | for the second half. |
| 2567 | |
| 2568 | Don't count commas that appear in argument lists of overloaded |
| 2569 | functions, or in quoted strings. It's stupid to go to this much |
| 2570 | trouble when the rest of the function is such an obvious roach hotel. */ |
| 2571 | ii = find_toplevel_char (*argptr, ','); |
| 2572 | has_comma = (ii != 0); |
| 2573 | |
| 2574 | /* Temporarily zap out second half to not |
| 2575 | * confuse the code below. |
| 2576 | * This is undone below. Do not change ii!! |
| 2577 | */ |
| 2578 | if (has_comma) |
| 2579 | { |
| 2580 | *ii = '\0'; |
| 2581 | } |
| 2582 | |
| 2583 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ |
| 2584 | /* May also be CLASS::MEMBER, or NAMESPACE::NAME */ |
| 2585 | /* Look for ':', but ignore inside of <> */ |
| 2586 | |
| 2587 | s = NULL; |
| 2588 | p = *argptr; |
| 2589 | if (p[0] == '"') |
| 2590 | { |
| 2591 | is_quote_enclosed = 1; |
| 2592 | p++; |
| 2593 | } |
| 2594 | else |
| 2595 | is_quote_enclosed = 0; |
| 2596 | for (; *p; p++) |
| 2597 | { |
| 2598 | if (p[0] == '<') |
| 2599 | { |
| 2600 | char *temp_end = find_template_name_end (p); |
| 2601 | if (!temp_end) |
| 2602 | error ("malformed template specification in command"); |
| 2603 | p = temp_end; |
| 2604 | } |
| 2605 | /* Check for the end of the first half of the linespec. End of line, |
| 2606 | a tab, a double colon or the last single colon, or a space. But |
| 2607 | if enclosed in double quotes we do not break on enclosed spaces */ |
| 2608 | if (!*p |
| 2609 | || p[0] == '\t' |
| 2610 | || ((p[0] == ':') |
| 2611 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) |
| 2612 | || ((p[0] == ' ') && !is_quote_enclosed)) |
| 2613 | break; |
| 2614 | if (p[0] == '.' && strchr (p, ':') == NULL) /* Java qualified method. */ |
| 2615 | { |
| 2616 | /* Find the *last* '.', since the others are package qualifiers. */ |
| 2617 | for (p1 = p; *p1; p1++) |
| 2618 | { |
| 2619 | if (*p1 == '.') |
| 2620 | p = p1; |
| 2621 | } |
| 2622 | break; |
| 2623 | } |
| 2624 | } |
| 2625 | while (p[0] == ' ' || p[0] == '\t') |
| 2626 | p++; |
| 2627 | |
| 2628 | /* if the closing double quote was left at the end, remove it */ |
| 2629 | if (is_quote_enclosed) |
| 2630 | { |
| 2631 | char *closing_quote = strchr (p, '"'); |
| 2632 | if (closing_quote && closing_quote[1] == '\0') |
| 2633 | *closing_quote = '\0'; |
| 2634 | } |
| 2635 | |
| 2636 | /* Now that we've safely parsed the first half, |
| 2637 | * put back ',' so outer layers can see it |
| 2638 | */ |
| 2639 | if (has_comma) |
| 2640 | *ii = ','; |
| 2641 | |
| 2642 | if ((p[0] == ':' || p[0] == '.') && !has_parens) |
| 2643 | { |
| 2644 | /* C++ */ |
| 2645 | /* ... or Java */ |
| 2646 | if (is_quoted) |
| 2647 | *argptr = *argptr + 1; |
| 2648 | if (p[0] == '.' || p[1] == ':') |
| 2649 | { |
| 2650 | char *saved_arg2 = *argptr; |
| 2651 | char *temp_end; |
| 2652 | /* First check for "global" namespace specification, |
| 2653 | of the form "::foo". If found, skip over the colons |
| 2654 | and jump to normal symbol processing */ |
| 2655 | if (p[0] == ':' |
| 2656 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) |
| 2657 | saved_arg2 += 2; |
| 2658 | |
| 2659 | /* We have what looks like a class or namespace |
| 2660 | scope specification (A::B), possibly with many |
| 2661 | levels of namespaces or classes (A::B::C::D). |
| 2662 | |
| 2663 | Some versions of the HP ANSI C++ compiler (as also possibly |
| 2664 | other compilers) generate class/function/member names with |
| 2665 | embedded double-colons if they are inside namespaces. To |
| 2666 | handle this, we loop a few times, considering larger and |
| 2667 | larger prefixes of the string as though they were single |
| 2668 | symbols. So, if the initially supplied string is |
| 2669 | A::B::C::D::foo, we have to look up "A", then "A::B", |
| 2670 | then "A::B::C", then "A::B::C::D", and finally |
| 2671 | "A::B::C::D::foo" as single, monolithic symbols, because |
| 2672 | A, B, C or D may be namespaces. |
| 2673 | |
| 2674 | Note that namespaces can nest only inside other |
| 2675 | namespaces, and not inside classes. So we need only |
| 2676 | consider *prefixes* of the string; there is no need to look up |
| 2677 | "B::C" separately as a symbol in the previous example. */ |
| 2678 | |
| 2679 | p2 = p; /* save for restart */ |
| 2680 | while (1) |
| 2681 | { |
| 2682 | /* Extract the class name. */ |
| 2683 | p1 = p; |
| 2684 | while (p != *argptr && p[-1] == ' ') |
| 2685 | --p; |
| 2686 | copy = (char *) alloca (p - *argptr + 1); |
| 2687 | memcpy (copy, *argptr, p - *argptr); |
| 2688 | copy[p - *argptr] = 0; |
| 2689 | |
| 2690 | /* Discard the class name from the arg. */ |
| 2691 | p = p1 + (p1[0] == ':' ? 2 : 1); |
| 2692 | while (*p == ' ' || *p == '\t') |
| 2693 | p++; |
| 2694 | *argptr = p; |
| 2695 | |
| 2696 | sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0, |
| 2697 | (struct symtab **) NULL); |
| 2698 | |
| 2699 | if (sym_class && |
| 2700 | (t = check_typedef (SYMBOL_TYPE (sym_class)), |
| 2701 | (TYPE_CODE (t) == TYPE_CODE_STRUCT |
| 2702 | || TYPE_CODE (t) == TYPE_CODE_UNION))) |
| 2703 | { |
| 2704 | /* Arg token is not digits => try it as a function name |
| 2705 | Find the next token(everything up to end or next blank). */ |
| 2706 | if (**argptr |
| 2707 | && strchr (gdb_completer_quote_characters, **argptr) != NULL) |
| 2708 | { |
| 2709 | p = skip_quoted (*argptr); |
| 2710 | *argptr = *argptr + 1; |
| 2711 | } |
| 2712 | else |
| 2713 | { |
| 2714 | p = *argptr; |
| 2715 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') |
| 2716 | p++; |
| 2717 | } |
| 2718 | /* |
| 2719 | q = operator_chars (*argptr, &q1); |
| 2720 | if (q1 - q) |
| 2721 | { |
| 2722 | char *opname; |
| 2723 | char *tmp = alloca (q1 - q + 1); |
| 2724 | memcpy (tmp, q, q1 - q); |
| 2725 | tmp[q1 - q] = '\0'; |
| 2726 | opname = cplus_mangle_opname (tmp, DMGL_ANSI); |
| 2727 | if (opname == NULL) |
| 2728 | { |
| 2729 | error_begin (); |
| 2730 | printf_filtered ("no mangling for \"%s\"\n", tmp); |
| 2731 | cplusplus_hint (saved_arg); |
| 2732 | return_to_top_level (RETURN_ERROR); |
| 2733 | } |
| 2734 | copy = (char*) alloca (3 + strlen(opname)); |
| 2735 | sprintf (copy, "__%s", opname); |
| 2736 | p = q1; |
| 2737 | } |
| 2738 | else |
| 2739 | */ |
| 2740 | { |
| 2741 | copy = (char *) alloca (p - *argptr + 1); |
| 2742 | memcpy (copy, *argptr, p - *argptr); |
| 2743 | copy[p - *argptr] = '\0'; |
| 2744 | if (p != *argptr |
| 2745 | && copy[p - *argptr - 1] |
| 2746 | && strchr (gdb_completer_quote_characters, |
| 2747 | copy[p - *argptr - 1]) != NULL) |
| 2748 | copy[p - *argptr - 1] = '\0'; |
| 2749 | } |
| 2750 | |
| 2751 | /* no line number may be specified */ |
| 2752 | while (*p == ' ' || *p == '\t') |
| 2753 | p++; |
| 2754 | *argptr = p; |
| 2755 | |
| 2756 | sym = 0; |
| 2757 | i1 = 0; /* counter for the symbol array */ |
| 2758 | sym_arr = (struct symbol **) alloca (total_number_of_methods (t) |
| 2759 | * sizeof (struct symbol *)); |
| 2760 | |
| 2761 | if (destructor_name_p (copy, t)) |
| 2762 | { |
| 2763 | /* Destructors are a special case. */ |
| 2764 | int m_index, f_index; |
| 2765 | |
| 2766 | if (get_destructor_fn_field (t, &m_index, &f_index)) |
| 2767 | { |
| 2768 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index); |
| 2769 | |
| 2770 | sym_arr[i1] = |
| 2771 | lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index), |
| 2772 | NULL, VAR_NAMESPACE, (int *) NULL, |
| 2773 | (struct symtab **) NULL); |
| 2774 | if (sym_arr[i1]) |
| 2775 | i1++; |
| 2776 | } |
| 2777 | } |
| 2778 | else |
| 2779 | i1 = find_methods (t, copy, sym_arr); |
| 2780 | if (i1 == 1) |
| 2781 | { |
| 2782 | /* There is exactly one field with that name. */ |
| 2783 | sym = sym_arr[0]; |
| 2784 | |
| 2785 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) |
| 2786 | { |
| 2787 | values.sals = (struct symtab_and_line *) |
| 2788 | xmalloc (sizeof (struct symtab_and_line)); |
| 2789 | values.nelts = 1; |
| 2790 | values.sals[0] = find_function_start_sal (sym, |
| 2791 | funfirstline); |
| 2792 | } |
| 2793 | else |
| 2794 | { |
| 2795 | values.nelts = 0; |
| 2796 | } |
| 2797 | return values; |
| 2798 | } |
| 2799 | if (i1 > 0) |
| 2800 | { |
| 2801 | /* There is more than one field with that name |
| 2802 | (overloaded). Ask the user which one to use. */ |
| 2803 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); |
| 2804 | } |
| 2805 | else |
| 2806 | { |
| 2807 | char *tmp; |
| 2808 | |
| 2809 | if (OPNAME_PREFIX_P (copy)) |
| 2810 | { |
| 2811 | tmp = (char *) alloca (strlen (copy + 3) + 9); |
| 2812 | strcpy (tmp, "operator "); |
| 2813 | strcat (tmp, copy + 3); |
| 2814 | } |
| 2815 | else |
| 2816 | tmp = copy; |
| 2817 | error_begin (); |
| 2818 | if (tmp[0] == '~') |
| 2819 | printf_filtered |
| 2820 | ("the class `%s' does not have destructor defined\n", |
| 2821 | SYMBOL_SOURCE_NAME (sym_class)); |
| 2822 | else |
| 2823 | printf_filtered |
| 2824 | ("the class %s does not have any method named %s\n", |
| 2825 | SYMBOL_SOURCE_NAME (sym_class), tmp); |
| 2826 | cplusplus_hint (saved_arg); |
| 2827 | return_to_top_level (RETURN_ERROR); |
| 2828 | } |
| 2829 | } |
| 2830 | |
| 2831 | /* Move pointer up to next possible class/namespace token */ |
| 2832 | p = p2 + 1; /* restart with old value +1 */ |
| 2833 | /* Move pointer ahead to next double-colon */ |
| 2834 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) |
| 2835 | { |
| 2836 | if (p[0] == '<') |
| 2837 | { |
| 2838 | temp_end = find_template_name_end (p); |
| 2839 | if (!temp_end) |
| 2840 | error ("malformed template specification in command"); |
| 2841 | p = temp_end; |
| 2842 | } |
| 2843 | else if ((p[0] == ':') && (p[1] == ':')) |
| 2844 | break; /* found double-colon */ |
| 2845 | else |
| 2846 | p++; |
| 2847 | } |
| 2848 | |
| 2849 | if (*p != ':') |
| 2850 | break; /* out of the while (1) */ |
| 2851 | |
| 2852 | p2 = p; /* save restart for next time around */ |
| 2853 | *argptr = saved_arg2; /* restore argptr */ |
| 2854 | } /* while (1) */ |
| 2855 | |
| 2856 | /* Last chance attempt -- check entire name as a symbol */ |
| 2857 | /* Use "copy" in preparation for jumping out of this block, |
| 2858 | to be consistent with usage following the jump target */ |
| 2859 | copy = (char *) alloca (p - saved_arg2 + 1); |
| 2860 | memcpy (copy, saved_arg2, p - saved_arg2); |
| 2861 | /* Note: if is_quoted should be true, we snuff out quote here anyway */ |
| 2862 | copy[p - saved_arg2] = '\000'; |
| 2863 | /* Set argptr to skip over the name */ |
| 2864 | *argptr = (*p == '\'') ? p + 1 : p; |
| 2865 | /* Look up entire name */ |
| 2866 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); |
| 2867 | s = (struct symtab *) 0; |
| 2868 | /* Prepare to jump: restore the " if (condition)" so outer layers see it */ |
| 2869 | /* Symbol was found --> jump to normal symbol processing. |
| 2870 | Code following "symbol_found" expects "copy" to have the |
| 2871 | symbol name, "sym" to have the symbol pointer, "s" to be |
| 2872 | a specified file's symtab, and sym_symtab to be the symbol's |
| 2873 | symtab. */ |
| 2874 | /* By jumping there we avoid falling through the FILE:LINE and |
| 2875 | FILE:FUNC processing stuff below */ |
| 2876 | if (sym) |
| 2877 | goto symbol_found; |
| 2878 | |
| 2879 | /* Couldn't find any interpretation as classes/namespaces, so give up */ |
| 2880 | error_begin (); |
| 2881 | /* The quotes are important if copy is empty. */ |
| 2882 | printf_filtered |
| 2883 | ("Can't find member of namespace, class, struct, or union named \"%s\"\n", copy); |
| 2884 | cplusplus_hint (saved_arg); |
| 2885 | return_to_top_level (RETURN_ERROR); |
| 2886 | } |
| 2887 | /* end of C++ */ |
| 2888 | |
| 2889 | |
| 2890 | /* Extract the file name. */ |
| 2891 | p1 = p; |
| 2892 | while (p != *argptr && p[-1] == ' ') |
| 2893 | --p; |
| 2894 | if ((*p == '"') && is_quote_enclosed) |
| 2895 | --p; |
| 2896 | copy = (char *) alloca (p - *argptr + 1); |
| 2897 | if ((**argptr == '"') && is_quote_enclosed) |
| 2898 | { |
| 2899 | memcpy (copy, *argptr + 1, p - *argptr - 1); |
| 2900 | /* It may have the ending quote right after the file name */ |
| 2901 | if (copy[p - *argptr - 2] == '"') |
| 2902 | copy[p - *argptr - 2] = 0; |
| 2903 | else |
| 2904 | copy[p - *argptr - 1] = 0; |
| 2905 | } |
| 2906 | else |
| 2907 | { |
| 2908 | memcpy (copy, *argptr, p - *argptr); |
| 2909 | copy[p - *argptr] = 0; |
| 2910 | } |
| 2911 | |
| 2912 | /* Find that file's data. */ |
| 2913 | s = lookup_symtab (copy); |
| 2914 | if (s == 0) |
| 2915 | { |
| 2916 | if (!have_full_symbols () && !have_partial_symbols ()) |
| 2917 | error (no_symtab_msg); |
| 2918 | error ("No source file named %s.", copy); |
| 2919 | } |
| 2920 | |
| 2921 | /* Discard the file name from the arg. */ |
| 2922 | p = p1 + 1; |
| 2923 | while (*p == ' ' || *p == '\t') |
| 2924 | p++; |
| 2925 | *argptr = p; |
| 2926 | } |
| 2927 | #if 0 |
| 2928 | /* No one really seems to know why this was added. It certainly |
| 2929 | breaks the command line, though, whenever the passed |
| 2930 | name is of the form ClassName::Method. This bit of code |
| 2931 | singles out the class name, and if funfirstline is set (for |
| 2932 | example, you are setting a breakpoint at this function), |
| 2933 | you get an error. This did not occur with earlier |
| 2934 | verions, so I am ifdef'ing this out. 3/29/99 */ |
| 2935 | else |
| 2936 | { |
| 2937 | /* Check if what we have till now is a symbol name */ |
| 2938 | |
| 2939 | /* We may be looking at a template instantiation such |
| 2940 | as "foo<int>". Check here whether we know about it, |
| 2941 | instead of falling through to the code below which |
| 2942 | handles ordinary function names, because that code |
| 2943 | doesn't like seeing '<' and '>' in a name -- the |
| 2944 | skip_quoted call doesn't go past them. So see if we |
| 2945 | can figure it out right now. */ |
| 2946 | |
| 2947 | copy = (char *) alloca (p - *argptr + 1); |
| 2948 | memcpy (copy, *argptr, p - *argptr); |
| 2949 | copy[p - *argptr] = '\000'; |
| 2950 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); |
| 2951 | if (sym) |
| 2952 | { |
| 2953 | /* Yes, we have a symbol; jump to symbol processing */ |
| 2954 | /* Code after symbol_found expects S, SYM_SYMTAB, SYM, |
| 2955 | and COPY to be set correctly */ |
| 2956 | *argptr = (*p == '\'') ? p + 1 : p; |
| 2957 | s = (struct symtab *) 0; |
| 2958 | goto symbol_found; |
| 2959 | } |
| 2960 | /* Otherwise fall out from here and go to file/line spec |
| 2961 | processing, etc. */ |
| 2962 | } |
| 2963 | #endif |
| 2964 | |
| 2965 | /* S is specified file's symtab, or 0 if no file specified. |
| 2966 | arg no longer contains the file name. */ |
| 2967 | |
| 2968 | /* Check whether arg is all digits (and sign) */ |
| 2969 | |
| 2970 | q = *argptr; |
| 2971 | if (*q == '-' || *q == '+') |
| 2972 | q++; |
| 2973 | while (*q >= '0' && *q <= '9') |
| 2974 | q++; |
| 2975 | |
| 2976 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) |
| 2977 | { |
| 2978 | /* We found a token consisting of all digits -- at least one digit. */ |
| 2979 | enum sign |
| 2980 | { |
| 2981 | none, plus, minus |
| 2982 | } |
| 2983 | sign = none; |
| 2984 | |
| 2985 | /* We might need a canonical line spec if no file was specified. */ |
| 2986 | int need_canonical = (s == 0) ? 1 : 0; |
| 2987 | |
| 2988 | /* This is where we need to make sure that we have good defaults. |
| 2989 | We must guarantee that this section of code is never executed |
| 2990 | when we are called with just a function name, since |
| 2991 | select_source_symtab calls us with such an argument */ |
| 2992 | |
| 2993 | if (s == 0 && default_symtab == 0) |
| 2994 | { |
| 2995 | select_source_symtab (0); |
| 2996 | default_symtab = current_source_symtab; |
| 2997 | default_line = current_source_line; |
| 2998 | } |
| 2999 | |
| 3000 | if (**argptr == '+') |
| 3001 | sign = plus, (*argptr)++; |
| 3002 | else if (**argptr == '-') |
| 3003 | sign = minus, (*argptr)++; |
| 3004 | val.line = atoi (*argptr); |
| 3005 | switch (sign) |
| 3006 | { |
| 3007 | case plus: |
| 3008 | if (q == *argptr) |
| 3009 | val.line = 5; |
| 3010 | if (s == 0) |
| 3011 | val.line = default_line + val.line; |
| 3012 | break; |
| 3013 | case minus: |
| 3014 | if (q == *argptr) |
| 3015 | val.line = 15; |
| 3016 | if (s == 0) |
| 3017 | val.line = default_line - val.line; |
| 3018 | else |
| 3019 | val.line = 1; |
| 3020 | break; |
| 3021 | case none: |
| 3022 | break; /* No need to adjust val.line. */ |
| 3023 | } |
| 3024 | |
| 3025 | while (*q == ' ' || *q == '\t') |
| 3026 | q++; |
| 3027 | *argptr = q; |
| 3028 | if (s == 0) |
| 3029 | s = default_symtab; |
| 3030 | |
| 3031 | /* It is possible that this source file has more than one symtab, |
| 3032 | and that the new line number specification has moved us from the |
| 3033 | default (in s) to a new one. */ |
| 3034 | val.symtab = find_line_symtab (s, val.line, NULL, NULL); |
| 3035 | if (val.symtab == 0) |
| 3036 | val.symtab = s; |
| 3037 | |
| 3038 | val.pc = 0; |
| 3039 | values.sals = (struct symtab_and_line *) |
| 3040 | xmalloc (sizeof (struct symtab_and_line)); |
| 3041 | values.sals[0] = val; |
| 3042 | values.nelts = 1; |
| 3043 | if (need_canonical) |
| 3044 | build_canonical_line_spec (values.sals, NULL, canonical); |
| 3045 | return values; |
| 3046 | } |
| 3047 | |
| 3048 | /* Arg token is not digits => try it as a variable name |
| 3049 | Find the next token (everything up to end or next whitespace). */ |
| 3050 | |
| 3051 | if (**argptr == '$') /* May be a convenience variable */ |
| 3052 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */ |
| 3053 | else if (is_quoted) |
| 3054 | { |
| 3055 | p = skip_quoted (*argptr); |
| 3056 | if (p[-1] != '\'') |
| 3057 | error ("Unmatched single quote."); |
| 3058 | } |
| 3059 | else if (has_parens) |
| 3060 | { |
| 3061 | p = pp + 1; |
| 3062 | } |
| 3063 | else |
| 3064 | { |
| 3065 | p = skip_quoted (*argptr); |
| 3066 | } |
| 3067 | |
| 3068 | if (is_quote_enclosed && **argptr == '"') |
| 3069 | (*argptr)++; |
| 3070 | |
| 3071 | copy = (char *) alloca (p - *argptr + 1); |
| 3072 | memcpy (copy, *argptr, p - *argptr); |
| 3073 | copy[p - *argptr] = '\0'; |
| 3074 | if (p != *argptr |
| 3075 | && copy[0] |
| 3076 | && copy[0] == copy[p - *argptr - 1] |
| 3077 | && strchr (gdb_completer_quote_characters, copy[0]) != NULL) |
| 3078 | { |
| 3079 | copy[p - *argptr - 1] = '\0'; |
| 3080 | copy++; |
| 3081 | } |
| 3082 | while (*p == ' ' || *p == '\t') |
| 3083 | p++; |
| 3084 | *argptr = p; |
| 3085 | |
| 3086 | /* If it starts with $: may be a legitimate variable or routine name |
| 3087 | (e.g. HP-UX millicode routines such as $$dyncall), or it may |
| 3088 | be history value, or it may be a convenience variable */ |
| 3089 | |
| 3090 | if (*copy == '$') |
| 3091 | { |
| 3092 | value_ptr valx; |
| 3093 | int index = 0; |
| 3094 | int need_canonical = 0; |
| 3095 | |
| 3096 | p = (copy[1] == '$') ? copy + 2 : copy + 1; |
| 3097 | while (*p >= '0' && *p <= '9') |
| 3098 | p++; |
| 3099 | if (!*p) /* reached end of token without hitting non-digit */ |
| 3100 | { |
| 3101 | /* We have a value history reference */ |
| 3102 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); |
| 3103 | valx = access_value_history ((copy[1] == '$') ? -index : index); |
| 3104 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) |
| 3105 | error ("History values used in line specs must have integer values."); |
| 3106 | } |
| 3107 | else |
| 3108 | { |
| 3109 | /* Not all digits -- may be user variable/function or a |
| 3110 | convenience variable */ |
| 3111 | |
| 3112 | /* Look up entire name as a symbol first */ |
| 3113 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); |
| 3114 | s = (struct symtab *) 0; |
| 3115 | need_canonical = 1; |
| 3116 | /* Symbol was found --> jump to normal symbol processing. |
| 3117 | Code following "symbol_found" expects "copy" to have the |
| 3118 | symbol name, "sym" to have the symbol pointer, "s" to be |
| 3119 | a specified file's symtab, and sym_symtab to be the symbol's |
| 3120 | symtab. */ |
| 3121 | if (sym) |
| 3122 | goto symbol_found; |
| 3123 | |
| 3124 | /* If symbol was not found, look in minimal symbol tables */ |
| 3125 | msymbol = lookup_minimal_symbol (copy, 0, 0); |
| 3126 | /* Min symbol was found --> jump to minsym processing. */ |
| 3127 | if (msymbol) |
| 3128 | goto minimal_symbol_found; |
| 3129 | |
| 3130 | /* Not a user variable or function -- must be convenience variable */ |
| 3131 | need_canonical = (s == 0) ? 1 : 0; |
| 3132 | valx = value_of_internalvar (lookup_internalvar (copy + 1)); |
| 3133 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) |
| 3134 | error ("Convenience variables used in line specs must have integer values."); |
| 3135 | } |
| 3136 | |
| 3137 | /* Either history value or convenience value from above, in valx */ |
| 3138 | val.symtab = s ? s : default_symtab; |
| 3139 | val.line = value_as_long (valx); |
| 3140 | val.pc = 0; |
| 3141 | |
| 3142 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); |
| 3143 | values.sals[0] = val; |
| 3144 | values.nelts = 1; |
| 3145 | |
| 3146 | if (need_canonical) |
| 3147 | build_canonical_line_spec (values.sals, NULL, canonical); |
| 3148 | |
| 3149 | return values; |
| 3150 | } |
| 3151 | |
| 3152 | |
| 3153 | /* Look up that token as a variable. |
| 3154 | If file specified, use that file's per-file block to start with. */ |
| 3155 | |
| 3156 | sym = lookup_symbol (copy, |
| 3157 | (s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) |
| 3158 | : get_selected_block ()), |
| 3159 | VAR_NAMESPACE, 0, &sym_symtab); |
| 3160 | |
| 3161 | symbol_found: /* We also jump here from inside the C++ class/namespace |
| 3162 | code on finding a symbol of the form "A::B::C" */ |
| 3163 | |
| 3164 | if (sym != NULL) |
| 3165 | { |
| 3166 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
| 3167 | { |
| 3168 | /* Arg is the name of a function */ |
| 3169 | values.sals = (struct symtab_and_line *) |
| 3170 | xmalloc (sizeof (struct symtab_and_line)); |
| 3171 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
| 3172 | values.nelts = 1; |
| 3173 | |
| 3174 | /* Don't use the SYMBOL_LINE; if used at all it points to |
| 3175 | the line containing the parameters or thereabouts, not |
| 3176 | the first line of code. */ |
| 3177 | |
| 3178 | /* We might need a canonical line spec if it is a static |
| 3179 | function. */ |
| 3180 | if (s == 0) |
| 3181 | { |
| 3182 | struct blockvector *bv = BLOCKVECTOR (sym_symtab); |
| 3183 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 3184 | if (lookup_block_symbol (b, copy, VAR_NAMESPACE) != NULL) |
| 3185 | build_canonical_line_spec (values.sals, copy, canonical); |
| 3186 | } |
| 3187 | return values; |
| 3188 | } |
| 3189 | else |
| 3190 | { |
| 3191 | if (funfirstline) |
| 3192 | error ("\"%s\" is not a function", copy); |
| 3193 | else if (SYMBOL_LINE (sym) != 0) |
| 3194 | { |
| 3195 | /* We know its line number. */ |
| 3196 | values.sals = (struct symtab_and_line *) |
| 3197 | xmalloc (sizeof (struct symtab_and_line)); |
| 3198 | values.nelts = 1; |
| 3199 | memset (&values.sals[0], 0, sizeof (values.sals[0])); |
| 3200 | values.sals[0].symtab = sym_symtab; |
| 3201 | values.sals[0].line = SYMBOL_LINE (sym); |
| 3202 | return values; |
| 3203 | } |
| 3204 | else |
| 3205 | /* This can happen if it is compiled with a compiler which doesn't |
| 3206 | put out line numbers for variables. */ |
| 3207 | /* FIXME: Shouldn't we just set .line and .symtab to zero |
| 3208 | and return? For example, "info line foo" could print |
| 3209 | the address. */ |
| 3210 | error ("Line number not known for symbol \"%s\"", copy); |
| 3211 | } |
| 3212 | } |
| 3213 | |
| 3214 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
| 3215 | |
| 3216 | minimal_symbol_found: /* We also jump here from the case for variables |
| 3217 | that begin with '$' */ |
| 3218 | |
| 3219 | if (msymbol != NULL) |
| 3220 | { |
| 3221 | values.sals = (struct symtab_and_line *) |
| 3222 | xmalloc (sizeof (struct symtab_and_line)); |
| 3223 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), |
| 3224 | (struct sec *) 0, 0); |
| 3225 | values.sals[0].section = SYMBOL_BFD_SECTION (msymbol); |
| 3226 | if (funfirstline) |
| 3227 | { |
| 3228 | values.sals[0].pc += FUNCTION_START_OFFSET; |
| 3229 | values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc); |
| 3230 | } |
| 3231 | values.nelts = 1; |
| 3232 | return values; |
| 3233 | } |
| 3234 | |
| 3235 | if (!have_full_symbols () && |
| 3236 | !have_partial_symbols () && !have_minimal_symbols ()) |
| 3237 | error (no_symtab_msg); |
| 3238 | |
| 3239 | error ("Function \"%s\" not defined.", copy); |
| 3240 | return values; /* for lint */ |
| 3241 | } |
| 3242 | |
| 3243 | struct symtabs_and_lines |
| 3244 | decode_line_spec (char *string, int funfirstline) |
| 3245 | { |
| 3246 | struct symtabs_and_lines sals; |
| 3247 | if (string == 0) |
| 3248 | error ("Empty line specification."); |
| 3249 | sals = decode_line_1 (&string, funfirstline, |
| 3250 | current_source_symtab, current_source_line, |
| 3251 | (char ***) NULL); |
| 3252 | if (*string) |
| 3253 | error ("Junk at end of line specification: %s", string); |
| 3254 | return sals; |
| 3255 | } |
| 3256 | |
| 3257 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to |
| 3258 | operate on (ask user if necessary). |
| 3259 | If CANONICAL is non-NULL return a corresponding array of mangled names |
| 3260 | as canonical line specs there. */ |
| 3261 | |
| 3262 | static struct symtabs_and_lines |
| 3263 | decode_line_2 (sym_arr, nelts, funfirstline, canonical) |
| 3264 | struct symbol *sym_arr[]; |
| 3265 | int nelts; |
| 3266 | int funfirstline; |
| 3267 | char ***canonical; |
| 3268 | { |
| 3269 | struct symtabs_and_lines values, return_values; |
| 3270 | char *args, *arg1; |
| 3271 | int i; |
| 3272 | char *prompt; |
| 3273 | char *symname; |
| 3274 | struct cleanup *old_chain; |
| 3275 | char **canonical_arr = (char **) NULL; |
| 3276 | |
| 3277 | values.sals = (struct symtab_and_line *) |
| 3278 | alloca (nelts * sizeof (struct symtab_and_line)); |
| 3279 | return_values.sals = (struct symtab_and_line *) |
| 3280 | xmalloc (nelts * sizeof (struct symtab_and_line)); |
| 3281 | old_chain = make_cleanup (free, return_values.sals); |
| 3282 | |
| 3283 | if (canonical) |
| 3284 | { |
| 3285 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); |
| 3286 | make_cleanup (free, canonical_arr); |
| 3287 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
| 3288 | *canonical = canonical_arr; |
| 3289 | } |
| 3290 | |
| 3291 | i = 0; |
| 3292 | printf_unfiltered ("[0] cancel\n[1] all\n"); |
| 3293 | while (i < nelts) |
| 3294 | { |
| 3295 | INIT_SAL (&return_values.sals[i]); /* initialize to zeroes */ |
| 3296 | INIT_SAL (&values.sals[i]); |
| 3297 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) |
| 3298 | { |
| 3299 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); |
| 3300 | printf_unfiltered ("[%d] %s at %s:%d\n", |
| 3301 | (i + 2), |
| 3302 | SYMBOL_SOURCE_NAME (sym_arr[i]), |
| 3303 | values.sals[i].symtab->filename, |
| 3304 | values.sals[i].line); |
| 3305 | } |
| 3306 | else |
| 3307 | printf_unfiltered ("?HERE\n"); |
| 3308 | i++; |
| 3309 | } |
| 3310 | |
| 3311 | if ((prompt = getenv ("PS2")) == NULL) |
| 3312 | { |
| 3313 | prompt = "> "; |
| 3314 | } |
| 3315 | args = command_line_input (prompt, 0, "overload-choice"); |
| 3316 | |
| 3317 | if (args == 0 || *args == 0) |
| 3318 | error_no_arg ("one or more choice numbers"); |
| 3319 | |
| 3320 | i = 0; |
| 3321 | while (*args) |
| 3322 | { |
| 3323 | int num; |
| 3324 | |
| 3325 | arg1 = args; |
| 3326 | while (*arg1 >= '0' && *arg1 <= '9') |
| 3327 | arg1++; |
| 3328 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') |
| 3329 | error ("Arguments must be choice numbers."); |
| 3330 | |
| 3331 | num = atoi (args); |
| 3332 | |
| 3333 | if (num == 0) |
| 3334 | error ("cancelled"); |
| 3335 | else if (num == 1) |
| 3336 | { |
| 3337 | if (canonical_arr) |
| 3338 | { |
| 3339 | for (i = 0; i < nelts; i++) |
| 3340 | { |
| 3341 | if (canonical_arr[i] == NULL) |
| 3342 | { |
| 3343 | symname = SYMBOL_NAME (sym_arr[i]); |
| 3344 | canonical_arr[i] = savestring (symname, strlen (symname)); |
| 3345 | } |
| 3346 | } |
| 3347 | } |
| 3348 | memcpy (return_values.sals, values.sals, |
| 3349 | (nelts * sizeof (struct symtab_and_line))); |
| 3350 | return_values.nelts = nelts; |
| 3351 | discard_cleanups (old_chain); |
| 3352 | return return_values; |
| 3353 | } |
| 3354 | |
| 3355 | if (num >= nelts + 2) |
| 3356 | { |
| 3357 | printf_unfiltered ("No choice number %d.\n", num); |
| 3358 | } |
| 3359 | else |
| 3360 | { |
| 3361 | num -= 2; |
| 3362 | if (values.sals[num].pc) |
| 3363 | { |
| 3364 | if (canonical_arr) |
| 3365 | { |
| 3366 | symname = SYMBOL_NAME (sym_arr[num]); |
| 3367 | make_cleanup (free, symname); |
| 3368 | canonical_arr[i] = savestring (symname, strlen (symname)); |
| 3369 | } |
| 3370 | return_values.sals[i++] = values.sals[num]; |
| 3371 | values.sals[num].pc = 0; |
| 3372 | } |
| 3373 | else |
| 3374 | { |
| 3375 | printf_unfiltered ("duplicate request for %d ignored.\n", num); |
| 3376 | } |
| 3377 | } |
| 3378 | |
| 3379 | args = arg1; |
| 3380 | while (*args == ' ' || *args == '\t') |
| 3381 | args++; |
| 3382 | } |
| 3383 | return_values.nelts = i; |
| 3384 | discard_cleanups (old_chain); |
| 3385 | return return_values; |
| 3386 | } |
| 3387 | \f |
| 3388 | |
| 3389 | /* Slave routine for sources_info. Force line breaks at ,'s. |
| 3390 | NAME is the name to print and *FIRST is nonzero if this is the first |
| 3391 | name printed. Set *FIRST to zero. */ |
| 3392 | static void |
| 3393 | output_source_filename (char *name, int *first) |
| 3394 | { |
| 3395 | /* Table of files printed so far. Since a single source file can |
| 3396 | result in several partial symbol tables, we need to avoid printing |
| 3397 | it more than once. Note: if some of the psymtabs are read in and |
| 3398 | some are not, it gets printed both under "Source files for which |
| 3399 | symbols have been read" and "Source files for which symbols will |
| 3400 | be read in on demand". I consider this a reasonable way to deal |
| 3401 | with the situation. I'm not sure whether this can also happen for |
| 3402 | symtabs; it doesn't hurt to check. */ |
| 3403 | static char **tab = NULL; |
| 3404 | /* Allocated size of tab in elements. |
| 3405 | Start with one 256-byte block (when using GNU malloc.c). |
| 3406 | 24 is the malloc overhead when range checking is in effect. */ |
| 3407 | static int tab_alloc_size = (256 - 24) / sizeof (char *); |
| 3408 | /* Current size of tab in elements. */ |
| 3409 | static int tab_cur_size; |
| 3410 | |
| 3411 | char **p; |
| 3412 | |
| 3413 | if (*first) |
| 3414 | { |
| 3415 | if (tab == NULL) |
| 3416 | tab = (char **) xmalloc (tab_alloc_size * sizeof (*tab)); |
| 3417 | tab_cur_size = 0; |
| 3418 | } |
| 3419 | |
| 3420 | /* Is NAME in tab? */ |
| 3421 | for (p = tab; p < tab + tab_cur_size; p++) |
| 3422 | if (STREQ (*p, name)) |
| 3423 | /* Yes; don't print it again. */ |
| 3424 | return; |
| 3425 | /* No; add it to tab. */ |
| 3426 | if (tab_cur_size == tab_alloc_size) |
| 3427 | { |
| 3428 | tab_alloc_size *= 2; |
| 3429 | tab = (char **) xrealloc ((char *) tab, tab_alloc_size * sizeof (*tab)); |
| 3430 | } |
| 3431 | tab[tab_cur_size++] = name; |
| 3432 | |
| 3433 | if (*first) |
| 3434 | { |
| 3435 | *first = 0; |
| 3436 | } |
| 3437 | else |
| 3438 | { |
| 3439 | printf_filtered (", "); |
| 3440 | } |
| 3441 | |
| 3442 | wrap_here (""); |
| 3443 | fputs_filtered (name, gdb_stdout); |
| 3444 | } |
| 3445 | |
| 3446 | static void |
| 3447 | sources_info (char *ignore, int from_tty) |
| 3448 | { |
| 3449 | register struct symtab *s; |
| 3450 | register struct partial_symtab *ps; |
| 3451 | register struct objfile *objfile; |
| 3452 | int first; |
| 3453 | |
| 3454 | if (!have_full_symbols () && !have_partial_symbols ()) |
| 3455 | { |
| 3456 | error (no_symtab_msg); |
| 3457 | } |
| 3458 | |
| 3459 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
| 3460 | |
| 3461 | first = 1; |
| 3462 | ALL_SYMTABS (objfile, s) |
| 3463 | { |
| 3464 | output_source_filename (s->filename, &first); |
| 3465 | } |
| 3466 | printf_filtered ("\n\n"); |
| 3467 | |
| 3468 | printf_filtered ("Source files for which symbols will be read in on demand:\n\n"); |
| 3469 | |
| 3470 | first = 1; |
| 3471 | ALL_PSYMTABS (objfile, ps) |
| 3472 | { |
| 3473 | if (!ps->readin) |
| 3474 | { |
| 3475 | output_source_filename (ps->filename, &first); |
| 3476 | } |
| 3477 | } |
| 3478 | printf_filtered ("\n"); |
| 3479 | } |
| 3480 | |
| 3481 | static int |
| 3482 | file_matches (file, files, nfiles) |
| 3483 | char *file; |
| 3484 | char *files[]; |
| 3485 | int nfiles; |
| 3486 | { |
| 3487 | int i; |
| 3488 | |
| 3489 | if (file != NULL && nfiles != 0) |
| 3490 | { |
| 3491 | for (i = 0; i < nfiles; i++) |
| 3492 | { |
| 3493 | if (strcmp (files[i], basename (file)) == 0) |
| 3494 | return 1; |
| 3495 | } |
| 3496 | } |
| 3497 | else if (nfiles == 0) |
| 3498 | return 1; |
| 3499 | return 0; |
| 3500 | } |
| 3501 | |
| 3502 | /* Free any memory associated with a search. */ |
| 3503 | void |
| 3504 | free_search_symbols (struct symbol_search *symbols) |
| 3505 | { |
| 3506 | struct symbol_search *p; |
| 3507 | struct symbol_search *next; |
| 3508 | |
| 3509 | for (p = symbols; p != NULL; p = next) |
| 3510 | { |
| 3511 | next = p->next; |
| 3512 | free (p); |
| 3513 | } |
| 3514 | } |
| 3515 | |
| 3516 | static void |
| 3517 | do_free_search_symbols_cleanup (void *symbols) |
| 3518 | { |
| 3519 | free_search_symbols (symbols); |
| 3520 | } |
| 3521 | |
| 3522 | struct cleanup * |
| 3523 | make_cleanup_free_search_symbols (struct symbol_search *symbols) |
| 3524 | { |
| 3525 | return make_cleanup (do_free_search_symbols_cleanup, symbols); |
| 3526 | } |
| 3527 | |
| 3528 | |
| 3529 | /* Search the symbol table for matches to the regular expression REGEXP, |
| 3530 | returning the results in *MATCHES. |
| 3531 | |
| 3532 | Only symbols of KIND are searched: |
| 3533 | FUNCTIONS_NAMESPACE - search all functions |
| 3534 | TYPES_NAMESPACE - search all type names |
| 3535 | METHODS_NAMESPACE - search all methods NOT IMPLEMENTED |
| 3536 | VARIABLES_NAMESPACE - search all symbols, excluding functions, type names, |
| 3537 | and constants (enums) |
| 3538 | |
| 3539 | free_search_symbols should be called when *MATCHES is no longer needed. |
| 3540 | */ |
| 3541 | void |
| 3542 | search_symbols (regexp, kind, nfiles, files, matches) |
| 3543 | char *regexp; |
| 3544 | namespace_enum kind; |
| 3545 | int nfiles; |
| 3546 | char *files[]; |
| 3547 | struct symbol_search **matches; |
| 3548 | |
| 3549 | { |
| 3550 | register struct symtab *s; |
| 3551 | register struct partial_symtab *ps; |
| 3552 | register struct blockvector *bv; |
| 3553 | struct blockvector *prev_bv = 0; |
| 3554 | register struct block *b; |
| 3555 | register int i = 0; |
| 3556 | register int j; |
| 3557 | register struct symbol *sym; |
| 3558 | struct partial_symbol **psym; |
| 3559 | struct objfile *objfile; |
| 3560 | struct minimal_symbol *msymbol; |
| 3561 | char *val; |
| 3562 | int found_misc = 0; |
| 3563 | static enum minimal_symbol_type types[] |
| 3564 | = |
| 3565 | {mst_data, mst_text, mst_abs, mst_unknown}; |
| 3566 | static enum minimal_symbol_type types2[] |
| 3567 | = |
| 3568 | {mst_bss, mst_file_text, mst_abs, mst_unknown}; |
| 3569 | static enum minimal_symbol_type types3[] |
| 3570 | = |
| 3571 | {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown}; |
| 3572 | static enum minimal_symbol_type types4[] |
| 3573 | = |
| 3574 | {mst_file_bss, mst_text, mst_abs, mst_unknown}; |
| 3575 | enum minimal_symbol_type ourtype; |
| 3576 | enum minimal_symbol_type ourtype2; |
| 3577 | enum minimal_symbol_type ourtype3; |
| 3578 | enum minimal_symbol_type ourtype4; |
| 3579 | struct symbol_search *sr; |
| 3580 | struct symbol_search *psr; |
| 3581 | struct symbol_search *tail; |
| 3582 | struct cleanup *old_chain = NULL; |
| 3583 | |
| 3584 | if (kind < LABEL_NAMESPACE) |
| 3585 | error ("must search on specific namespace"); |
| 3586 | |
| 3587 | ourtype = types[(int) (kind - VARIABLES_NAMESPACE)]; |
| 3588 | ourtype2 = types2[(int) (kind - VARIABLES_NAMESPACE)]; |
| 3589 | ourtype3 = types3[(int) (kind - VARIABLES_NAMESPACE)]; |
| 3590 | ourtype4 = types4[(int) (kind - VARIABLES_NAMESPACE)]; |
| 3591 | |
| 3592 | sr = *matches = NULL; |
| 3593 | tail = NULL; |
| 3594 | |
| 3595 | if (regexp != NULL) |
| 3596 | { |
| 3597 | /* Make sure spacing is right for C++ operators. |
| 3598 | This is just a courtesy to make the matching less sensitive |
| 3599 | to how many spaces the user leaves between 'operator' |
| 3600 | and <TYPENAME> or <OPERATOR>. */ |
| 3601 | char *opend; |
| 3602 | char *opname = operator_chars (regexp, &opend); |
| 3603 | if (*opname) |
| 3604 | { |
| 3605 | int fix = -1; /* -1 means ok; otherwise number of spaces needed. */ |
| 3606 | if (isalpha (*opname) || *opname == '_' || *opname == '$') |
| 3607 | { |
| 3608 | /* There should 1 space between 'operator' and 'TYPENAME'. */ |
| 3609 | if (opname[-1] != ' ' || opname[-2] == ' ') |
| 3610 | fix = 1; |
| 3611 | } |
| 3612 | else |
| 3613 | { |
| 3614 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ |
| 3615 | if (opname[-1] == ' ') |
| 3616 | fix = 0; |
| 3617 | } |
| 3618 | /* If wrong number of spaces, fix it. */ |
| 3619 | if (fix >= 0) |
| 3620 | { |
| 3621 | char *tmp = (char *) alloca (opend - opname + 10); |
| 3622 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
| 3623 | regexp = tmp; |
| 3624 | } |
| 3625 | } |
| 3626 | |
| 3627 | if (0 != (val = re_comp (regexp))) |
| 3628 | error ("Invalid regexp (%s): %s", val, regexp); |
| 3629 | } |
| 3630 | |
| 3631 | /* Search through the partial symtabs *first* for all symbols |
| 3632 | matching the regexp. That way we don't have to reproduce all of |
| 3633 | the machinery below. */ |
| 3634 | |
| 3635 | ALL_PSYMTABS (objfile, ps) |
| 3636 | { |
| 3637 | struct partial_symbol **bound, **gbound, **sbound; |
| 3638 | int keep_going = 1; |
| 3639 | |
| 3640 | if (ps->readin) |
| 3641 | continue; |
| 3642 | |
| 3643 | gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms; |
| 3644 | sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms; |
| 3645 | bound = gbound; |
| 3646 | |
| 3647 | /* Go through all of the symbols stored in a partial |
| 3648 | symtab in one loop. */ |
| 3649 | psym = objfile->global_psymbols.list + ps->globals_offset; |
| 3650 | while (keep_going) |
| 3651 | { |
| 3652 | if (psym >= bound) |
| 3653 | { |
| 3654 | if (bound == gbound && ps->n_static_syms != 0) |
| 3655 | { |
| 3656 | psym = objfile->static_psymbols.list + ps->statics_offset; |
| 3657 | bound = sbound; |
| 3658 | } |
| 3659 | else |
| 3660 | keep_going = 0; |
| 3661 | continue; |
| 3662 | } |
| 3663 | else |
| 3664 | { |
| 3665 | QUIT; |
| 3666 | |
| 3667 | /* If it would match (logic taken from loop below) |
| 3668 | load the file and go on to the next one */ |
| 3669 | if (file_matches (ps->filename, files, nfiles) |
| 3670 | && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (*psym)) |
| 3671 | && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (*psym) != LOC_TYPEDEF |
| 3672 | && SYMBOL_CLASS (*psym) != LOC_BLOCK) |
| 3673 | || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK) |
| 3674 | || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_TYPEDEF) |
| 3675 | || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK)))) |
| 3676 | { |
| 3677 | PSYMTAB_TO_SYMTAB (ps); |
| 3678 | keep_going = 0; |
| 3679 | } |
| 3680 | } |
| 3681 | psym++; |
| 3682 | } |
| 3683 | } |
| 3684 | |
| 3685 | /* Here, we search through the minimal symbol tables for functions |
| 3686 | and variables that match, and force their symbols to be read. |
| 3687 | This is in particular necessary for demangled variable names, |
| 3688 | which are no longer put into the partial symbol tables. |
| 3689 | The symbol will then be found during the scan of symtabs below. |
| 3690 | |
| 3691 | For functions, find_pc_symtab should succeed if we have debug info |
| 3692 | for the function, for variables we have to call lookup_symbol |
| 3693 | to determine if the variable has debug info. |
| 3694 | If the lookup fails, set found_misc so that we will rescan to print |
| 3695 | any matching symbols without debug info. |
| 3696 | */ |
| 3697 | |
| 3698 | if (nfiles == 0 && (kind == VARIABLES_NAMESPACE || kind == FUNCTIONS_NAMESPACE)) |
| 3699 | { |
| 3700 | ALL_MSYMBOLS (objfile, msymbol) |
| 3701 | { |
| 3702 | if (MSYMBOL_TYPE (msymbol) == ourtype || |
| 3703 | MSYMBOL_TYPE (msymbol) == ourtype2 || |
| 3704 | MSYMBOL_TYPE (msymbol) == ourtype3 || |
| 3705 | MSYMBOL_TYPE (msymbol) == ourtype4) |
| 3706 | { |
| 3707 | if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol)) |
| 3708 | { |
| 3709 | if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))) |
| 3710 | { |
| 3711 | if (kind == FUNCTIONS_NAMESPACE |
| 3712 | || lookup_symbol (SYMBOL_NAME (msymbol), |
| 3713 | (struct block *) NULL, |
| 3714 | VAR_NAMESPACE, |
| 3715 | 0, (struct symtab **) NULL) == NULL) |
| 3716 | found_misc = 1; |
| 3717 | } |
| 3718 | } |
| 3719 | } |
| 3720 | } |
| 3721 | } |
| 3722 | |
| 3723 | ALL_SYMTABS (objfile, s) |
| 3724 | { |
| 3725 | bv = BLOCKVECTOR (s); |
| 3726 | /* Often many files share a blockvector. |
| 3727 | Scan each blockvector only once so that |
| 3728 | we don't get every symbol many times. |
| 3729 | It happens that the first symtab in the list |
| 3730 | for any given blockvector is the main file. */ |
| 3731 | if (bv != prev_bv) |
| 3732 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
| 3733 | { |
| 3734 | b = BLOCKVECTOR_BLOCK (bv, i); |
| 3735 | /* Skip the sort if this block is always sorted. */ |
| 3736 | if (!BLOCK_SHOULD_SORT (b)) |
| 3737 | sort_block_syms (b); |
| 3738 | for (j = 0; j < BLOCK_NSYMS (b); j++) |
| 3739 | { |
| 3740 | QUIT; |
| 3741 | sym = BLOCK_SYM (b, j); |
| 3742 | if (file_matches (s->filename, files, nfiles) |
| 3743 | && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym)) |
| 3744 | && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (sym) != LOC_TYPEDEF |
| 3745 | && SYMBOL_CLASS (sym) != LOC_BLOCK |
| 3746 | && SYMBOL_CLASS (sym) != LOC_CONST) |
| 3747 | || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK) |
| 3748 | || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
| 3749 | || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK)))) |
| 3750 | { |
| 3751 | /* match */ |
| 3752 | psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); |
| 3753 | psr->block = i; |
| 3754 | psr->symtab = s; |
| 3755 | psr->symbol = sym; |
| 3756 | psr->msymbol = NULL; |
| 3757 | psr->next = NULL; |
| 3758 | if (tail == NULL) |
| 3759 | { |
| 3760 | sr = psr; |
| 3761 | old_chain = make_cleanup_free_search_symbols (sr); |
| 3762 | } |
| 3763 | else |
| 3764 | tail->next = psr; |
| 3765 | tail = psr; |
| 3766 | } |
| 3767 | } |
| 3768 | } |
| 3769 | prev_bv = bv; |
| 3770 | } |
| 3771 | |
| 3772 | /* If there are no eyes, avoid all contact. I mean, if there are |
| 3773 | no debug symbols, then print directly from the msymbol_vector. */ |
| 3774 | |
| 3775 | if (found_misc || kind != FUNCTIONS_NAMESPACE) |
| 3776 | { |
| 3777 | ALL_MSYMBOLS (objfile, msymbol) |
| 3778 | { |
| 3779 | if (MSYMBOL_TYPE (msymbol) == ourtype || |
| 3780 | MSYMBOL_TYPE (msymbol) == ourtype2 || |
| 3781 | MSYMBOL_TYPE (msymbol) == ourtype3 || |
| 3782 | MSYMBOL_TYPE (msymbol) == ourtype4) |
| 3783 | { |
| 3784 | if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol)) |
| 3785 | { |
| 3786 | /* Functions: Look up by address. */ |
| 3787 | if (kind != FUNCTIONS_NAMESPACE || |
| 3788 | (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))) |
| 3789 | { |
| 3790 | /* Variables/Absolutes: Look up by name */ |
| 3791 | if (lookup_symbol (SYMBOL_NAME (msymbol), |
| 3792 | (struct block *) NULL, VAR_NAMESPACE, |
| 3793 | 0, (struct symtab **) NULL) == NULL) |
| 3794 | { |
| 3795 | /* match */ |
| 3796 | psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); |
| 3797 | psr->block = i; |
| 3798 | psr->msymbol = msymbol; |
| 3799 | psr->symtab = NULL; |
| 3800 | psr->symbol = NULL; |
| 3801 | psr->next = NULL; |
| 3802 | if (tail == NULL) |
| 3803 | { |
| 3804 | sr = psr; |
| 3805 | old_chain = make_cleanup_free_search_symbols (sr); |
| 3806 | } |
| 3807 | else |
| 3808 | tail->next = psr; |
| 3809 | tail = psr; |
| 3810 | } |
| 3811 | } |
| 3812 | } |
| 3813 | } |
| 3814 | } |
| 3815 | } |
| 3816 | |
| 3817 | *matches = sr; |
| 3818 | if (sr != NULL) |
| 3819 | discard_cleanups (old_chain); |
| 3820 | } |
| 3821 | |
| 3822 | /* Helper function for symtab_symbol_info, this function uses |
| 3823 | the data returned from search_symbols() to print information |
| 3824 | regarding the match to gdb_stdout. |
| 3825 | */ |
| 3826 | static void |
| 3827 | print_symbol_info (namespace_enum kind, struct symtab *s, struct symbol *sym, |
| 3828 | int block, char *last) |
| 3829 | { |
| 3830 | if (last == NULL || strcmp (last, s->filename) != 0) |
| 3831 | { |
| 3832 | fputs_filtered ("\nFile ", gdb_stdout); |
| 3833 | fputs_filtered (s->filename, gdb_stdout); |
| 3834 | fputs_filtered (":\n", gdb_stdout); |
| 3835 | } |
| 3836 | |
| 3837 | if (kind != TYPES_NAMESPACE && block == STATIC_BLOCK) |
| 3838 | printf_filtered ("static "); |
| 3839 | |
| 3840 | /* Typedef that is not a C++ class */ |
| 3841 | if (kind == TYPES_NAMESPACE |
| 3842 | && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE) |
| 3843 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
| 3844 | /* variable, func, or typedef-that-is-c++-class */ |
| 3845 | else if (kind < TYPES_NAMESPACE || |
| 3846 | (kind == TYPES_NAMESPACE && |
| 3847 | SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE)) |
| 3848 | { |
| 3849 | type_print (SYMBOL_TYPE (sym), |
| 3850 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
| 3851 | ? "" : SYMBOL_SOURCE_NAME (sym)), |
| 3852 | gdb_stdout, 0); |
| 3853 | |
| 3854 | printf_filtered (";\n"); |
| 3855 | } |
| 3856 | else |
| 3857 | { |
| 3858 | #if 0 |
| 3859 | /* Tiemann says: "info methods was never implemented." */ |
| 3860 | char *demangled_name; |
| 3861 | c_type_print_base (TYPE_FN_FIELD_TYPE (t, block), |
| 3862 | gdb_stdout, 0, 0); |
| 3863 | c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t, block), |
| 3864 | gdb_stdout, 0); |
| 3865 | if (TYPE_FN_FIELD_STUB (t, block)) |
| 3866 | check_stub_method (TYPE_DOMAIN_TYPE (type), j, block); |
| 3867 | demangled_name = |
| 3868 | cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t, block), |
| 3869 | DMGL_ANSI | DMGL_PARAMS); |
| 3870 | if (demangled_name == NULL) |
| 3871 | fprintf_filtered (stream, "<badly mangled name %s>", |
| 3872 | TYPE_FN_FIELD_PHYSNAME (t, block)); |
| 3873 | else |
| 3874 | { |
| 3875 | fputs_filtered (demangled_name, stream); |
| 3876 | free (demangled_name); |
| 3877 | } |
| 3878 | #endif |
| 3879 | } |
| 3880 | } |
| 3881 | |
| 3882 | /* This help function for symtab_symbol_info() prints information |
| 3883 | for non-debugging symbols to gdb_stdout. |
| 3884 | */ |
| 3885 | static void |
| 3886 | print_msymbol_info (struct minimal_symbol *msymbol) |
| 3887 | { |
| 3888 | printf_filtered (" %08lx %s\n", |
| 3889 | (unsigned long) SYMBOL_VALUE_ADDRESS (msymbol), |
| 3890 | SYMBOL_SOURCE_NAME (msymbol)); |
| 3891 | } |
| 3892 | |
| 3893 | /* This is the guts of the commands "info functions", "info types", and |
| 3894 | "info variables". It calls search_symbols to find all matches and then |
| 3895 | print_[m]symbol_info to print out some useful information about the |
| 3896 | matches. |
| 3897 | */ |
| 3898 | static void |
| 3899 | symtab_symbol_info (char *regexp, namespace_enum kind, int from_tty) |
| 3900 | { |
| 3901 | static char *classnames[] |
| 3902 | = |
| 3903 | {"variable", "function", "type", "method"}; |
| 3904 | struct symbol_search *symbols; |
| 3905 | struct symbol_search *p; |
| 3906 | struct cleanup *old_chain; |
| 3907 | char *last_filename = NULL; |
| 3908 | int first = 1; |
| 3909 | |
| 3910 | /* must make sure that if we're interrupted, symbols gets freed */ |
| 3911 | search_symbols (regexp, kind, 0, (char **) NULL, &symbols); |
| 3912 | old_chain = make_cleanup_free_search_symbols (symbols); |
| 3913 | |
| 3914 | printf_filtered (regexp |
| 3915 | ? "All %ss matching regular expression \"%s\":\n" |
| 3916 | : "All defined %ss:\n", |
| 3917 | classnames[(int) (kind - VARIABLES_NAMESPACE)], regexp); |
| 3918 | |
| 3919 | for (p = symbols; p != NULL; p = p->next) |
| 3920 | { |
| 3921 | QUIT; |
| 3922 | |
| 3923 | if (p->msymbol != NULL) |
| 3924 | { |
| 3925 | if (first) |
| 3926 | { |
| 3927 | printf_filtered ("\nNon-debugging symbols:\n"); |
| 3928 | first = 0; |
| 3929 | } |
| 3930 | print_msymbol_info (p->msymbol); |
| 3931 | } |
| 3932 | else |
| 3933 | { |
| 3934 | print_symbol_info (kind, |
| 3935 | p->symtab, |
| 3936 | p->symbol, |
| 3937 | p->block, |
| 3938 | last_filename); |
| 3939 | last_filename = p->symtab->filename; |
| 3940 | } |
| 3941 | } |
| 3942 | |
| 3943 | do_cleanups (old_chain); |
| 3944 | } |
| 3945 | |
| 3946 | static void |
| 3947 | variables_info (char *regexp, int from_tty) |
| 3948 | { |
| 3949 | symtab_symbol_info (regexp, VARIABLES_NAMESPACE, from_tty); |
| 3950 | } |
| 3951 | |
| 3952 | static void |
| 3953 | functions_info (char *regexp, int from_tty) |
| 3954 | { |
| 3955 | symtab_symbol_info (regexp, FUNCTIONS_NAMESPACE, from_tty); |
| 3956 | } |
| 3957 | |
| 3958 | |
| 3959 | static void |
| 3960 | types_info (char *regexp, int from_tty) |
| 3961 | { |
| 3962 | symtab_symbol_info (regexp, TYPES_NAMESPACE, from_tty); |
| 3963 | } |
| 3964 | |
| 3965 | #if 0 |
| 3966 | /* Tiemann says: "info methods was never implemented." */ |
| 3967 | static void |
| 3968 | methods_info (char *regexp) |
| 3969 | { |
| 3970 | symtab_symbol_info (regexp, METHODS_NAMESPACE, 0, from_tty); |
| 3971 | } |
| 3972 | #endif /* 0 */ |
| 3973 | |
| 3974 | /* Breakpoint all functions matching regular expression. */ |
| 3975 | #ifdef UI_OUT |
| 3976 | void |
| 3977 | rbreak_command_wrapper (char *regexp, int from_tty) |
| 3978 | { |
| 3979 | rbreak_command (regexp, from_tty); |
| 3980 | } |
| 3981 | #endif |
| 3982 | static void |
| 3983 | rbreak_command (char *regexp, int from_tty) |
| 3984 | { |
| 3985 | struct symbol_search *ss; |
| 3986 | struct symbol_search *p; |
| 3987 | struct cleanup *old_chain; |
| 3988 | |
| 3989 | search_symbols (regexp, FUNCTIONS_NAMESPACE, 0, (char **) NULL, &ss); |
| 3990 | old_chain = make_cleanup_free_search_symbols (ss); |
| 3991 | |
| 3992 | for (p = ss; p != NULL; p = p->next) |
| 3993 | { |
| 3994 | if (p->msymbol == NULL) |
| 3995 | { |
| 3996 | char *string = (char *) alloca (strlen (p->symtab->filename) |
| 3997 | + strlen (SYMBOL_NAME (p->symbol)) |
| 3998 | + 4); |
| 3999 | strcpy (string, p->symtab->filename); |
| 4000 | strcat (string, ":'"); |
| 4001 | strcat (string, SYMBOL_NAME (p->symbol)); |
| 4002 | strcat (string, "'"); |
| 4003 | break_command (string, from_tty); |
| 4004 | print_symbol_info (FUNCTIONS_NAMESPACE, |
| 4005 | p->symtab, |
| 4006 | p->symbol, |
| 4007 | p->block, |
| 4008 | p->symtab->filename); |
| 4009 | } |
| 4010 | else |
| 4011 | { |
| 4012 | break_command (SYMBOL_NAME (p->msymbol), from_tty); |
| 4013 | printf_filtered ("<function, no debug info> %s;\n", |
| 4014 | SYMBOL_SOURCE_NAME (p->msymbol)); |
| 4015 | } |
| 4016 | } |
| 4017 | |
| 4018 | do_cleanups (old_chain); |
| 4019 | } |
| 4020 | \f |
| 4021 | |
| 4022 | /* Return Nonzero if block a is lexically nested within block b, |
| 4023 | or if a and b have the same pc range. |
| 4024 | Return zero otherwise. */ |
| 4025 | int |
| 4026 | contained_in (struct block *a, struct block *b) |
| 4027 | { |
| 4028 | if (!a || !b) |
| 4029 | return 0; |
| 4030 | return BLOCK_START (a) >= BLOCK_START (b) |
| 4031 | && BLOCK_END (a) <= BLOCK_END (b); |
| 4032 | } |
| 4033 | \f |
| 4034 | |
| 4035 | /* Helper routine for make_symbol_completion_list. */ |
| 4036 | |
| 4037 | static int return_val_size; |
| 4038 | static int return_val_index; |
| 4039 | static char **return_val; |
| 4040 | |
| 4041 | #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \ |
| 4042 | do { \ |
| 4043 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \ |
| 4044 | /* Put only the mangled name on the list. */ \ |
| 4045 | /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \ |
| 4046 | /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \ |
| 4047 | completion_list_add_name \ |
| 4048 | (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \ |
| 4049 | else \ |
| 4050 | completion_list_add_name \ |
| 4051 | (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \ |
| 4052 | } while (0) |
| 4053 | |
| 4054 | /* Test to see if the symbol specified by SYMNAME (which is already |
| 4055 | demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN |
| 4056 | characters. If so, add it to the current completion list. */ |
| 4057 | |
| 4058 | static void |
| 4059 | completion_list_add_name (char *symname, char *sym_text, int sym_text_len, |
| 4060 | char *text, char *word) |
| 4061 | { |
| 4062 | int newsize; |
| 4063 | int i; |
| 4064 | |
| 4065 | /* clip symbols that cannot match */ |
| 4066 | |
| 4067 | if (strncmp (symname, sym_text, sym_text_len) != 0) |
| 4068 | { |
| 4069 | return; |
| 4070 | } |
| 4071 | |
| 4072 | /* Clip any symbol names that we've already considered. (This is a |
| 4073 | time optimization) */ |
| 4074 | |
| 4075 | for (i = 0; i < return_val_index; ++i) |
| 4076 | { |
| 4077 | if (STREQ (symname, return_val[i])) |
| 4078 | { |
| 4079 | return; |
| 4080 | } |
| 4081 | } |
| 4082 | |
| 4083 | /* We have a match for a completion, so add SYMNAME to the current list |
| 4084 | of matches. Note that the name is moved to freshly malloc'd space. */ |
| 4085 | |
| 4086 | { |
| 4087 | char *new; |
| 4088 | if (word == sym_text) |
| 4089 | { |
| 4090 | new = xmalloc (strlen (symname) + 5); |
| 4091 | strcpy (new, symname); |
| 4092 | } |
| 4093 | else if (word > sym_text) |
| 4094 | { |
| 4095 | /* Return some portion of symname. */ |
| 4096 | new = xmalloc (strlen (symname) + 5); |
| 4097 | strcpy (new, symname + (word - sym_text)); |
| 4098 | } |
| 4099 | else |
| 4100 | { |
| 4101 | /* Return some of SYM_TEXT plus symname. */ |
| 4102 | new = xmalloc (strlen (symname) + (sym_text - word) + 5); |
| 4103 | strncpy (new, word, sym_text - word); |
| 4104 | new[sym_text - word] = '\0'; |
| 4105 | strcat (new, symname); |
| 4106 | } |
| 4107 | |
| 4108 | /* Recheck for duplicates if we intend to add a modified symbol. */ |
| 4109 | if (word != sym_text) |
| 4110 | { |
| 4111 | for (i = 0; i < return_val_index; ++i) |
| 4112 | { |
| 4113 | if (STREQ (new, return_val[i])) |
| 4114 | { |
| 4115 | free (new); |
| 4116 | return; |
| 4117 | } |
| 4118 | } |
| 4119 | } |
| 4120 | |
| 4121 | if (return_val_index + 3 > return_val_size) |
| 4122 | { |
| 4123 | newsize = (return_val_size *= 2) * sizeof (char *); |
| 4124 | return_val = (char **) xrealloc ((char *) return_val, newsize); |
| 4125 | } |
| 4126 | return_val[return_val_index++] = new; |
| 4127 | return_val[return_val_index] = NULL; |
| 4128 | } |
| 4129 | } |
| 4130 | |
| 4131 | /* Return a NULL terminated array of all symbols (regardless of class) which |
| 4132 | begin by matching TEXT. If the answer is no symbols, then the return value |
| 4133 | is an array which contains only a NULL pointer. |
| 4134 | |
| 4135 | Problem: All of the symbols have to be copied because readline frees them. |
| 4136 | I'm not going to worry about this; hopefully there won't be that many. */ |
| 4137 | |
| 4138 | char ** |
| 4139 | make_symbol_completion_list (char *text, char *word) |
| 4140 | { |
| 4141 | register struct symbol *sym; |
| 4142 | register struct symtab *s; |
| 4143 | register struct partial_symtab *ps; |
| 4144 | register struct minimal_symbol *msymbol; |
| 4145 | register struct objfile *objfile; |
| 4146 | register struct block *b, *surrounding_static_block = 0; |
| 4147 | register int i, j; |
| 4148 | struct partial_symbol **psym; |
| 4149 | /* The symbol we are completing on. Points in same buffer as text. */ |
| 4150 | char *sym_text; |
| 4151 | /* Length of sym_text. */ |
| 4152 | int sym_text_len; |
| 4153 | |
| 4154 | /* Now look for the symbol we are supposed to complete on. |
| 4155 | FIXME: This should be language-specific. */ |
| 4156 | { |
| 4157 | char *p; |
| 4158 | char quote_found; |
| 4159 | char *quote_pos = NULL; |
| 4160 | |
| 4161 | /* First see if this is a quoted string. */ |
| 4162 | quote_found = '\0'; |
| 4163 | for (p = text; *p != '\0'; ++p) |
| 4164 | { |
| 4165 | if (quote_found != '\0') |
| 4166 | { |
| 4167 | if (*p == quote_found) |
| 4168 | /* Found close quote. */ |
| 4169 | quote_found = '\0'; |
| 4170 | else if (*p == '\\' && p[1] == quote_found) |
| 4171 | /* A backslash followed by the quote character |
| 4172 | doesn't end the string. */ |
| 4173 | ++p; |
| 4174 | } |
| 4175 | else if (*p == '\'' || *p == '"') |
| 4176 | { |
| 4177 | quote_found = *p; |
| 4178 | quote_pos = p; |
| 4179 | } |
| 4180 | } |
| 4181 | if (quote_found == '\'') |
| 4182 | /* A string within single quotes can be a symbol, so complete on it. */ |
| 4183 | sym_text = quote_pos + 1; |
| 4184 | else if (quote_found == '"') |
| 4185 | /* A double-quoted string is never a symbol, nor does it make sense |
| 4186 | to complete it any other way. */ |
| 4187 | return NULL; |
| 4188 | else |
| 4189 | { |
| 4190 | /* It is not a quoted string. Break it based on the characters |
| 4191 | which are in symbols. */ |
| 4192 | while (p > text) |
| 4193 | { |
| 4194 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') |
| 4195 | --p; |
| 4196 | else |
| 4197 | break; |
| 4198 | } |
| 4199 | sym_text = p; |
| 4200 | } |
| 4201 | } |
| 4202 | |
| 4203 | sym_text_len = strlen (sym_text); |
| 4204 | |
| 4205 | return_val_size = 100; |
| 4206 | return_val_index = 0; |
| 4207 | return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); |
| 4208 | return_val[0] = NULL; |
| 4209 | |
| 4210 | /* Look through the partial symtabs for all symbols which begin |
| 4211 | by matching SYM_TEXT. Add each one that you find to the list. */ |
| 4212 | |
| 4213 | ALL_PSYMTABS (objfile, ps) |
| 4214 | { |
| 4215 | /* If the psymtab's been read in we'll get it when we search |
| 4216 | through the blockvector. */ |
| 4217 | if (ps->readin) |
| 4218 | continue; |
| 4219 | |
| 4220 | for (psym = objfile->global_psymbols.list + ps->globals_offset; |
| 4221 | psym < (objfile->global_psymbols.list + ps->globals_offset |
| 4222 | + ps->n_global_syms); |
| 4223 | psym++) |
| 4224 | { |
| 4225 | /* If interrupted, then quit. */ |
| 4226 | QUIT; |
| 4227 | COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word); |
| 4228 | } |
| 4229 | |
| 4230 | for (psym = objfile->static_psymbols.list + ps->statics_offset; |
| 4231 | psym < (objfile->static_psymbols.list + ps->statics_offset |
| 4232 | + ps->n_static_syms); |
| 4233 | psym++) |
| 4234 | { |
| 4235 | QUIT; |
| 4236 | COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word); |
| 4237 | } |
| 4238 | } |
| 4239 | |
| 4240 | /* At this point scan through the misc symbol vectors and add each |
| 4241 | symbol you find to the list. Eventually we want to ignore |
| 4242 | anything that isn't a text symbol (everything else will be |
| 4243 | handled by the psymtab code above). */ |
| 4244 | |
| 4245 | ALL_MSYMBOLS (objfile, msymbol) |
| 4246 | { |
| 4247 | QUIT; |
| 4248 | COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word); |
| 4249 | } |
| 4250 | |
| 4251 | /* Search upwards from currently selected frame (so that we can |
| 4252 | complete on local vars. */ |
| 4253 | |
| 4254 | for (b = get_selected_block (); b != NULL; b = BLOCK_SUPERBLOCK (b)) |
| 4255 | { |
| 4256 | if (!BLOCK_SUPERBLOCK (b)) |
| 4257 | { |
| 4258 | surrounding_static_block = b; /* For elmin of dups */ |
| 4259 | } |
| 4260 | |
| 4261 | /* Also catch fields of types defined in this places which match our |
| 4262 | text string. Only complete on types visible from current context. */ |
| 4263 | |
| 4264 | for (i = 0; i < BLOCK_NSYMS (b); i++) |
| 4265 | { |
| 4266 | sym = BLOCK_SYM (b, i); |
| 4267 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
| 4268 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
| 4269 | { |
| 4270 | struct type *t = SYMBOL_TYPE (sym); |
| 4271 | enum type_code c = TYPE_CODE (t); |
| 4272 | |
| 4273 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) |
| 4274 | { |
| 4275 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) |
| 4276 | { |
| 4277 | if (TYPE_FIELD_NAME (t, j)) |
| 4278 | { |
| 4279 | completion_list_add_name (TYPE_FIELD_NAME (t, j), |
| 4280 | sym_text, sym_text_len, text, word); |
| 4281 | } |
| 4282 | } |
| 4283 | } |
| 4284 | } |
| 4285 | } |
| 4286 | } |
| 4287 | |
| 4288 | /* Go through the symtabs and check the externs and statics for |
| 4289 | symbols which match. */ |
| 4290 | |
| 4291 | ALL_SYMTABS (objfile, s) |
| 4292 | { |
| 4293 | QUIT; |
| 4294 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); |
| 4295 | for (i = 0; i < BLOCK_NSYMS (b); i++) |
| 4296 | { |
| 4297 | sym = BLOCK_SYM (b, i); |
| 4298 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
| 4299 | } |
| 4300 | } |
| 4301 | |
| 4302 | ALL_SYMTABS (objfile, s) |
| 4303 | { |
| 4304 | QUIT; |
| 4305 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); |
| 4306 | /* Don't do this block twice. */ |
| 4307 | if (b == surrounding_static_block) |
| 4308 | continue; |
| 4309 | for (i = 0; i < BLOCK_NSYMS (b); i++) |
| 4310 | { |
| 4311 | sym = BLOCK_SYM (b, i); |
| 4312 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
| 4313 | } |
| 4314 | } |
| 4315 | |
| 4316 | return (return_val); |
| 4317 | } |
| 4318 | |
| 4319 | /* Determine if PC is in the prologue of a function. The prologue is the area |
| 4320 | between the first instruction of a function, and the first executable line. |
| 4321 | Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue. |
| 4322 | |
| 4323 | If non-zero, func_start is where we think the prologue starts, possibly |
| 4324 | by previous examination of symbol table information. |
| 4325 | */ |
| 4326 | |
| 4327 | int |
| 4328 | in_prologue (CORE_ADDR pc, CORE_ADDR func_start) |
| 4329 | { |
| 4330 | struct symtab_and_line sal; |
| 4331 | CORE_ADDR func_addr, func_end; |
| 4332 | |
| 4333 | /* We have several sources of information we can consult to figure |
| 4334 | this out. |
| 4335 | - Compilers usually emit line number info that marks the prologue |
| 4336 | as its own "source line". So the ending address of that "line" |
| 4337 | is the end of the prologue. If available, this is the most |
| 4338 | reliable method. |
| 4339 | - The minimal symbols and partial symbols, which can usually tell |
| 4340 | us the starting and ending addresses of a function. |
| 4341 | - If we know the function's start address, we can call the |
| 4342 | architecture-defined SKIP_PROLOGUE function to analyze the |
| 4343 | instruction stream and guess where the prologue ends. |
| 4344 | - Our `func_start' argument; if non-zero, this is the caller's |
| 4345 | best guess as to the function's entry point. At the time of |
| 4346 | this writing, handle_inferior_event doesn't get this right, so |
| 4347 | it should be our last resort. */ |
| 4348 | |
| 4349 | /* Consult the partial symbol table, to find which function |
| 4350 | the PC is in. */ |
| 4351 | if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end)) |
| 4352 | { |
| 4353 | CORE_ADDR prologue_end; |
| 4354 | |
| 4355 | /* We don't even have minsym information, so fall back to using |
| 4356 | func_start, if given. */ |
| 4357 | if (! func_start) |
| 4358 | return 1; /* We *might* be in a prologue. */ |
| 4359 | |
| 4360 | prologue_end = SKIP_PROLOGUE (func_start); |
| 4361 | |
| 4362 | return func_start <= pc && pc < prologue_end; |
| 4363 | } |
| 4364 | |
| 4365 | /* If we have line number information for the function, that's |
| 4366 | usually pretty reliable. */ |
| 4367 | sal = find_pc_line (func_addr, 0); |
| 4368 | |
| 4369 | /* Now sal describes the source line at the function's entry point, |
| 4370 | which (by convention) is the prologue. The end of that "line", |
| 4371 | sal.end, is the end of the prologue. |
| 4372 | |
| 4373 | Note that, for functions whose source code is all on a single |
| 4374 | line, the line number information doesn't always end up this way. |
| 4375 | So we must verify that our purported end-of-prologue address is |
| 4376 | *within* the function, not at its start or end. */ |
| 4377 | if (sal.line == 0 |
| 4378 | || sal.end <= func_addr |
| 4379 | || func_end <= sal.end) |
| 4380 | { |
| 4381 | /* We don't have any good line number info, so use the minsym |
| 4382 | information, together with the architecture-specific prologue |
| 4383 | scanning code. */ |
| 4384 | CORE_ADDR prologue_end = SKIP_PROLOGUE (func_addr); |
| 4385 | |
| 4386 | return func_addr <= pc && pc < prologue_end; |
| 4387 | } |
| 4388 | |
| 4389 | /* We have line number info, and it looks good. */ |
| 4390 | return func_addr <= pc && pc < sal.end; |
| 4391 | } |
| 4392 | |
| 4393 | |
| 4394 | /* Begin overload resolution functions */ |
| 4395 | /* Helper routine for make_symbol_completion_list. */ |
| 4396 | |
| 4397 | static int sym_return_val_size; |
| 4398 | static int sym_return_val_index; |
| 4399 | static struct symbol **sym_return_val; |
| 4400 | |
| 4401 | /* Test to see if the symbol specified by SYMNAME (which is already |
| 4402 | demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN |
| 4403 | characters. If so, add it to the current completion list. */ |
| 4404 | |
| 4405 | static void |
| 4406 | overload_list_add_symbol (struct symbol *sym, char *oload_name) |
| 4407 | { |
| 4408 | int newsize; |
| 4409 | int i; |
| 4410 | |
| 4411 | /* Get the demangled name without parameters */ |
| 4412 | char *sym_name = cplus_demangle (SYMBOL_NAME (sym), DMGL_ARM | DMGL_ANSI); |
| 4413 | if (!sym_name) |
| 4414 | { |
| 4415 | sym_name = (char *) xmalloc (strlen (SYMBOL_NAME (sym)) + 1); |
| 4416 | strcpy (sym_name, SYMBOL_NAME (sym)); |
| 4417 | } |
| 4418 | |
| 4419 | /* skip symbols that cannot match */ |
| 4420 | if (strcmp (sym_name, oload_name) != 0) |
| 4421 | { |
| 4422 | free (sym_name); |
| 4423 | return; |
| 4424 | } |
| 4425 | |
| 4426 | /* If there is no type information, we can't do anything, so skip */ |
| 4427 | if (SYMBOL_TYPE (sym) == NULL) |
| 4428 | return; |
| 4429 | |
| 4430 | /* skip any symbols that we've already considered. */ |
| 4431 | for (i = 0; i < sym_return_val_index; ++i) |
| 4432 | if (!strcmp (SYMBOL_NAME (sym), SYMBOL_NAME (sym_return_val[i]))) |
| 4433 | return; |
| 4434 | |
| 4435 | /* We have a match for an overload instance, so add SYM to the current list |
| 4436 | * of overload instances */ |
| 4437 | if (sym_return_val_index + 3 > sym_return_val_size) |
| 4438 | { |
| 4439 | newsize = (sym_return_val_size *= 2) * sizeof (struct symbol *); |
| 4440 | sym_return_val = (struct symbol **) xrealloc ((char *) sym_return_val, newsize); |
| 4441 | } |
| 4442 | sym_return_val[sym_return_val_index++] = sym; |
| 4443 | sym_return_val[sym_return_val_index] = NULL; |
| 4444 | |
| 4445 | free (sym_name); |
| 4446 | } |
| 4447 | |
| 4448 | /* Return a null-terminated list of pointers to function symbols that |
| 4449 | * match name of the supplied symbol FSYM. |
| 4450 | * This is used in finding all overloaded instances of a function name. |
| 4451 | * This has been modified from make_symbol_completion_list. */ |
| 4452 | |
| 4453 | |
| 4454 | struct symbol ** |
| 4455 | make_symbol_overload_list (struct symbol *fsym) |
| 4456 | { |
| 4457 | register struct symbol *sym; |
| 4458 | register struct symtab *s; |
| 4459 | register struct partial_symtab *ps; |
| 4460 | register struct objfile *objfile; |
| 4461 | register struct block *b, *surrounding_static_block = 0; |
| 4462 | register int i; |
| 4463 | /* The name we are completing on. */ |
| 4464 | char *oload_name = NULL; |
| 4465 | /* Length of name. */ |
| 4466 | int oload_name_len = 0; |
| 4467 | |
| 4468 | /* Look for the symbol we are supposed to complete on. |
| 4469 | * FIXME: This should be language-specific. */ |
| 4470 | |
| 4471 | oload_name = cplus_demangle (SYMBOL_NAME (fsym), DMGL_ARM | DMGL_ANSI); |
| 4472 | if (!oload_name) |
| 4473 | { |
| 4474 | oload_name = (char *) xmalloc (strlen (SYMBOL_NAME (fsym)) + 1); |
| 4475 | strcpy (oload_name, SYMBOL_NAME (fsym)); |
| 4476 | } |
| 4477 | oload_name_len = strlen (oload_name); |
| 4478 | |
| 4479 | sym_return_val_size = 100; |
| 4480 | sym_return_val_index = 0; |
| 4481 | sym_return_val = (struct symbol **) xmalloc ((sym_return_val_size + 1) * sizeof (struct symbol *)); |
| 4482 | sym_return_val[0] = NULL; |
| 4483 | |
| 4484 | /* Look through the partial symtabs for all symbols which begin |
| 4485 | by matching OLOAD_NAME. Make sure we read that symbol table in. */ |
| 4486 | |
| 4487 | ALL_PSYMTABS (objfile, ps) |
| 4488 | { |
| 4489 | struct partial_symbol **psym; |
| 4490 | |
| 4491 | /* If the psymtab's been read in we'll get it when we search |
| 4492 | through the blockvector. */ |
| 4493 | if (ps->readin) |
| 4494 | continue; |
| 4495 | |
| 4496 | for (psym = objfile->global_psymbols.list + ps->globals_offset; |
| 4497 | psym < (objfile->global_psymbols.list + ps->globals_offset |
| 4498 | + ps->n_global_syms); |
| 4499 | psym++) |
| 4500 | { |
| 4501 | /* If interrupted, then quit. */ |
| 4502 | QUIT; |
| 4503 | /* This will cause the symbol table to be read if it has not yet been */ |
| 4504 | s = PSYMTAB_TO_SYMTAB (ps); |
| 4505 | } |
| 4506 | |
| 4507 | for (psym = objfile->static_psymbols.list + ps->statics_offset; |
| 4508 | psym < (objfile->static_psymbols.list + ps->statics_offset |
| 4509 | + ps->n_static_syms); |
| 4510 | psym++) |
| 4511 | { |
| 4512 | QUIT; |
| 4513 | /* This will cause the symbol table to be read if it has not yet been */ |
| 4514 | s = PSYMTAB_TO_SYMTAB (ps); |
| 4515 | } |
| 4516 | } |
| 4517 | |
| 4518 | /* Search upwards from currently selected frame (so that we can |
| 4519 | complete on local vars. */ |
| 4520 | |
| 4521 | for (b = get_selected_block (); b != NULL; b = BLOCK_SUPERBLOCK (b)) |
| 4522 | { |
| 4523 | if (!BLOCK_SUPERBLOCK (b)) |
| 4524 | { |
| 4525 | surrounding_static_block = b; /* For elimination of dups */ |
| 4526 | } |
| 4527 | |
| 4528 | /* Also catch fields of types defined in this places which match our |
| 4529 | text string. Only complete on types visible from current context. */ |
| 4530 | |
| 4531 | for (i = 0; i < BLOCK_NSYMS (b); i++) |
| 4532 | { |
| 4533 | sym = BLOCK_SYM (b, i); |
| 4534 | overload_list_add_symbol (sym, oload_name); |
| 4535 | } |
| 4536 | } |
| 4537 | |
| 4538 | /* Go through the symtabs and check the externs and statics for |
| 4539 | symbols which match. */ |
| 4540 | |
| 4541 | ALL_SYMTABS (objfile, s) |
| 4542 | { |
| 4543 | QUIT; |
| 4544 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); |
| 4545 | for (i = 0; i < BLOCK_NSYMS (b); i++) |
| 4546 | { |
| 4547 | sym = BLOCK_SYM (b, i); |
| 4548 | overload_list_add_symbol (sym, oload_name); |
| 4549 | } |
| 4550 | } |
| 4551 | |
| 4552 | ALL_SYMTABS (objfile, s) |
| 4553 | { |
| 4554 | QUIT; |
| 4555 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); |
| 4556 | /* Don't do this block twice. */ |
| 4557 | if (b == surrounding_static_block) |
| 4558 | continue; |
| 4559 | for (i = 0; i < BLOCK_NSYMS (b); i++) |
| 4560 | { |
| 4561 | sym = BLOCK_SYM (b, i); |
| 4562 | overload_list_add_symbol (sym, oload_name); |
| 4563 | } |
| 4564 | } |
| 4565 | |
| 4566 | free (oload_name); |
| 4567 | |
| 4568 | return (sym_return_val); |
| 4569 | } |
| 4570 | |
| 4571 | /* End of overload resolution functions */ |
| 4572 | \f |
| 4573 | |
| 4574 | void |
| 4575 | _initialize_symtab (void) |
| 4576 | { |
| 4577 | add_info ("variables", variables_info, |
| 4578 | "All global and static variable names, or those matching REGEXP."); |
| 4579 | if (dbx_commands) |
| 4580 | add_com ("whereis", class_info, variables_info, |
| 4581 | "All global and static variable names, or those matching REGEXP."); |
| 4582 | |
| 4583 | add_info ("functions", functions_info, |
| 4584 | "All function names, or those matching REGEXP."); |
| 4585 | |
| 4586 | |
| 4587 | /* FIXME: This command has at least the following problems: |
| 4588 | 1. It prints builtin types (in a very strange and confusing fashion). |
| 4589 | 2. It doesn't print right, e.g. with |
| 4590 | typedef struct foo *FOO |
| 4591 | type_print prints "FOO" when we want to make it (in this situation) |
| 4592 | print "struct foo *". |
| 4593 | I also think "ptype" or "whatis" is more likely to be useful (but if |
| 4594 | there is much disagreement "info types" can be fixed). */ |
| 4595 | add_info ("types", types_info, |
| 4596 | "All type names, or those matching REGEXP."); |
| 4597 | |
| 4598 | #if 0 |
| 4599 | add_info ("methods", methods_info, |
| 4600 | "All method names, or those matching REGEXP::REGEXP.\n\ |
| 4601 | If the class qualifier is omitted, it is assumed to be the current scope.\n\ |
| 4602 | If the first REGEXP is omitted, then all methods matching the second REGEXP\n\ |
| 4603 | are listed."); |
| 4604 | #endif |
| 4605 | add_info ("sources", sources_info, |
| 4606 | "Source files in the program."); |
| 4607 | |
| 4608 | add_com ("rbreak", class_breakpoint, rbreak_command, |
| 4609 | "Set a breakpoint for all functions matching REGEXP."); |
| 4610 | |
| 4611 | if (xdb_commands) |
| 4612 | { |
| 4613 | add_com ("lf", class_info, sources_info, "Source files in the program"); |
| 4614 | add_com ("lg", class_info, variables_info, |
| 4615 | "All global and static variable names, or those matching REGEXP."); |
| 4616 | } |
| 4617 | |
| 4618 | /* Initialize the one built-in type that isn't language dependent... */ |
| 4619 | builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0, |
| 4620 | "<unknown type>", (struct objfile *) NULL); |
| 4621 | } |