| 1 | /* Parser for linespec for the GNU debugger, GDB. |
| 2 | |
| 3 | Copyright (C) 1986-2005, 2007-2012 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "symtab.h" |
| 22 | #include "frame.h" |
| 23 | #include "command.h" |
| 24 | #include "symfile.h" |
| 25 | #include "objfiles.h" |
| 26 | #include "source.h" |
| 27 | #include "demangle.h" |
| 28 | #include "value.h" |
| 29 | #include "completer.h" |
| 30 | #include "cp-abi.h" |
| 31 | #include "cp-support.h" |
| 32 | #include "parser-defs.h" |
| 33 | #include "block.h" |
| 34 | #include "objc-lang.h" |
| 35 | #include "linespec.h" |
| 36 | #include "exceptions.h" |
| 37 | #include "language.h" |
| 38 | #include "interps.h" |
| 39 | #include "mi/mi-cmds.h" |
| 40 | #include "target.h" |
| 41 | #include "arch-utils.h" |
| 42 | #include <ctype.h> |
| 43 | #include "cli/cli-utils.h" |
| 44 | #include "filenames.h" |
| 45 | #include "ada-lang.h" |
| 46 | |
| 47 | typedef struct symtab *symtab_p; |
| 48 | DEF_VEC_P (symtab_p); |
| 49 | |
| 50 | typedef struct symbol *symbolp; |
| 51 | DEF_VEC_P (symbolp); |
| 52 | |
| 53 | typedef struct type *typep; |
| 54 | DEF_VEC_P (typep); |
| 55 | |
| 56 | /* An address entry is used to ensure that any given location is only |
| 57 | added to the result a single time. It holds an address and the |
| 58 | program space from which the address came. */ |
| 59 | |
| 60 | struct address_entry |
| 61 | { |
| 62 | struct program_space *pspace; |
| 63 | CORE_ADDR addr; |
| 64 | }; |
| 65 | |
| 66 | /* An instance of this is used to keep all state while linespec |
| 67 | operates. This instance is passed around as a 'this' pointer to |
| 68 | the various implementation methods. */ |
| 69 | |
| 70 | struct linespec_state |
| 71 | { |
| 72 | /* The program space as seen when the module was entered. */ |
| 73 | struct program_space *program_space; |
| 74 | |
| 75 | /* The default symtab to use, if no other symtab is specified. */ |
| 76 | struct symtab *default_symtab; |
| 77 | |
| 78 | /* The default line to use. */ |
| 79 | int default_line; |
| 80 | |
| 81 | /* If the linespec started with "FILE:", this holds all the matching |
| 82 | symtabs. Otherwise, it will hold a single NULL entry, meaning |
| 83 | that the default symtab should be used. */ |
| 84 | VEC (symtab_p) *file_symtabs; |
| 85 | |
| 86 | /* If the linespec started with "FILE:", this holds an xmalloc'd |
| 87 | copy of "FILE". */ |
| 88 | char *user_filename; |
| 89 | |
| 90 | /* If the linespec is "FUNCTION:LABEL", this holds an xmalloc'd copy |
| 91 | of "FUNCTION". */ |
| 92 | char *user_function; |
| 93 | |
| 94 | /* The 'funfirstline' value that was passed in to decode_line_1 or |
| 95 | decode_line_full. */ |
| 96 | int funfirstline; |
| 97 | |
| 98 | /* Nonzero if we are running in 'list' mode; see decode_line_list. */ |
| 99 | int list_mode; |
| 100 | |
| 101 | /* The 'canonical' value passed to decode_line_full, or NULL. */ |
| 102 | struct linespec_result *canonical; |
| 103 | |
| 104 | /* Canonical strings that mirror the symtabs_and_lines result. */ |
| 105 | char **canonical_names; |
| 106 | |
| 107 | /* This is a set of address_entry objects which is used to prevent |
| 108 | duplicate symbols from being entered into the result. */ |
| 109 | htab_t addr_set; |
| 110 | }; |
| 111 | |
| 112 | /* This is a helper object that is used when collecting symbols into a |
| 113 | result. */ |
| 114 | |
| 115 | struct collect_info |
| 116 | { |
| 117 | /* The linespec object in use. */ |
| 118 | struct linespec_state *state; |
| 119 | |
| 120 | /* The result being accumulated. */ |
| 121 | struct symtabs_and_lines result; |
| 122 | }; |
| 123 | |
| 124 | /* Prototypes for local functions. */ |
| 125 | |
| 126 | static void initialize_defaults (struct symtab **default_symtab, |
| 127 | int *default_line); |
| 128 | |
| 129 | static struct symtabs_and_lines decode_indirect (struct linespec_state *self, |
| 130 | char **argptr); |
| 131 | |
| 132 | static char *locate_first_half (char **argptr, int *is_quote_enclosed); |
| 133 | |
| 134 | static struct symtabs_and_lines decode_objc (struct linespec_state *self, |
| 135 | char **argptr); |
| 136 | |
| 137 | static struct symtabs_and_lines decode_compound (struct linespec_state *self, |
| 138 | char **argptr, |
| 139 | char *saved_arg, |
| 140 | char *p); |
| 141 | |
| 142 | static VEC (symbolp) *lookup_prefix_sym (char **argptr, char *p, |
| 143 | VEC (symtab_p) *, |
| 144 | char **); |
| 145 | |
| 146 | static struct symtabs_and_lines find_method (struct linespec_state *self, |
| 147 | char *saved_arg, |
| 148 | char *copy, |
| 149 | const char *class_name, |
| 150 | VEC (symbolp) *sym_classes); |
| 151 | |
| 152 | static void cplusplus_error (const char *name, const char *fmt, ...) |
| 153 | ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (2, 3); |
| 154 | |
| 155 | static char *find_toplevel_char (char *s, char c); |
| 156 | |
| 157 | static int is_objc_method_format (const char *s); |
| 158 | |
| 159 | static VEC (symtab_p) *symtabs_from_filename (char **argptr, |
| 160 | char *p, int is_quote_enclosed, |
| 161 | char **user_filename); |
| 162 | |
| 163 | static VEC (symbolp) *find_function_symbols (char **argptr, char *p, |
| 164 | int is_quote_enclosed, |
| 165 | char **user_function); |
| 166 | |
| 167 | static struct symtabs_and_lines decode_all_digits (struct linespec_state *self, |
| 168 | char **argptr, |
| 169 | char *q); |
| 170 | |
| 171 | static struct symtabs_and_lines decode_dollar (struct linespec_state *self, |
| 172 | char *copy); |
| 173 | |
| 174 | static int decode_label (struct linespec_state *self, |
| 175 | VEC (symbolp) *function_symbols, |
| 176 | char *copy, |
| 177 | struct symtabs_and_lines *result); |
| 178 | |
| 179 | static struct symtabs_and_lines decode_variable (struct linespec_state *self, |
| 180 | char *copy); |
| 181 | |
| 182 | static int symbol_to_sal (struct symtab_and_line *result, |
| 183 | int funfirstline, struct symbol *sym); |
| 184 | |
| 185 | static void add_matching_symbols_to_info (const char *name, |
| 186 | struct collect_info *info, |
| 187 | struct program_space *pspace); |
| 188 | |
| 189 | static void add_all_symbol_names_from_pspace (struct collect_info *info, |
| 190 | struct program_space *pspace, |
| 191 | VEC (const_char_ptr) *names); |
| 192 | |
| 193 | /* Helper functions. */ |
| 194 | |
| 195 | /* Add SAL to SALS. */ |
| 196 | |
| 197 | static void |
| 198 | add_sal_to_sals_basic (struct symtabs_and_lines *sals, |
| 199 | struct symtab_and_line *sal) |
| 200 | { |
| 201 | ++sals->nelts; |
| 202 | sals->sals = xrealloc (sals->sals, sals->nelts * sizeof (sals->sals[0])); |
| 203 | sals->sals[sals->nelts - 1] = *sal; |
| 204 | } |
| 205 | |
| 206 | /* Add SAL to SALS, and also update SELF->CANONICAL_NAMES to reflect |
| 207 | the new sal, if needed. If not NULL, SYMNAME is the name of the |
| 208 | symbol to use when constructing the new canonical name. */ |
| 209 | |
| 210 | static void |
| 211 | add_sal_to_sals (struct linespec_state *self, |
| 212 | struct symtabs_and_lines *sals, |
| 213 | struct symtab_and_line *sal, |
| 214 | const char *symname) |
| 215 | { |
| 216 | add_sal_to_sals_basic (sals, sal); |
| 217 | |
| 218 | if (self->canonical) |
| 219 | { |
| 220 | char *canonical_name = NULL; |
| 221 | |
| 222 | self->canonical_names = xrealloc (self->canonical_names, |
| 223 | sals->nelts * sizeof (char *)); |
| 224 | if (sal->symtab && sal->symtab->filename) |
| 225 | { |
| 226 | char *filename = sal->symtab->filename; |
| 227 | |
| 228 | /* Note that the filter doesn't have to be a valid linespec |
| 229 | input. We only apply the ":LINE" treatment to Ada for |
| 230 | the time being. */ |
| 231 | if (symname != NULL && sal->line != 0 |
| 232 | && current_language->la_language == language_ada) |
| 233 | canonical_name = xstrprintf ("%s:%s:%d", filename, symname, |
| 234 | sal->line); |
| 235 | else if (symname != NULL) |
| 236 | canonical_name = xstrprintf ("%s:%s", filename, symname); |
| 237 | else |
| 238 | canonical_name = xstrprintf ("%s:%d", filename, sal->line); |
| 239 | } |
| 240 | |
| 241 | self->canonical_names[sals->nelts - 1] = canonical_name; |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | /* A hash function for address_entry. */ |
| 246 | |
| 247 | static hashval_t |
| 248 | hash_address_entry (const void *p) |
| 249 | { |
| 250 | const struct address_entry *aep = p; |
| 251 | hashval_t hash; |
| 252 | |
| 253 | hash = iterative_hash_object (aep->pspace, 0); |
| 254 | return iterative_hash_object (aep->addr, hash); |
| 255 | } |
| 256 | |
| 257 | /* An equality function for address_entry. */ |
| 258 | |
| 259 | static int |
| 260 | eq_address_entry (const void *a, const void *b) |
| 261 | { |
| 262 | const struct address_entry *aea = a; |
| 263 | const struct address_entry *aeb = b; |
| 264 | |
| 265 | return aea->pspace == aeb->pspace && aea->addr == aeb->addr; |
| 266 | } |
| 267 | |
| 268 | /* Check whether the address, represented by PSPACE and ADDR, is |
| 269 | already in the set. If so, return 0. Otherwise, add it and return |
| 270 | 1. */ |
| 271 | |
| 272 | static int |
| 273 | maybe_add_address (htab_t set, struct program_space *pspace, CORE_ADDR addr) |
| 274 | { |
| 275 | struct address_entry e, *p; |
| 276 | void **slot; |
| 277 | |
| 278 | e.pspace = pspace; |
| 279 | e.addr = addr; |
| 280 | slot = htab_find_slot (set, &e, INSERT); |
| 281 | if (*slot) |
| 282 | return 0; |
| 283 | |
| 284 | p = XNEW (struct address_entry); |
| 285 | memcpy (p, &e, sizeof (struct address_entry)); |
| 286 | *slot = p; |
| 287 | |
| 288 | return 1; |
| 289 | } |
| 290 | |
| 291 | /* Issue a helpful hint on using the command completion feature on |
| 292 | single quoted demangled C++ symbols as part of the completion |
| 293 | error. */ |
| 294 | |
| 295 | static void |
| 296 | cplusplus_error (const char *name, const char *fmt, ...) |
| 297 | { |
| 298 | struct ui_file *tmp_stream; |
| 299 | char *message; |
| 300 | |
| 301 | tmp_stream = mem_fileopen (); |
| 302 | make_cleanup_ui_file_delete (tmp_stream); |
| 303 | |
| 304 | { |
| 305 | va_list args; |
| 306 | |
| 307 | va_start (args, fmt); |
| 308 | vfprintf_unfiltered (tmp_stream, fmt, args); |
| 309 | va_end (args); |
| 310 | } |
| 311 | |
| 312 | while (*name == '\'') |
| 313 | name++; |
| 314 | fprintf_unfiltered (tmp_stream, |
| 315 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" |
| 316 | "(Note leading single quote.)"), |
| 317 | name, name); |
| 318 | |
| 319 | message = ui_file_xstrdup (tmp_stream, NULL); |
| 320 | make_cleanup (xfree, message); |
| 321 | throw_error (NOT_FOUND_ERROR, "%s", message); |
| 322 | } |
| 323 | |
| 324 | /* Some data for the expand_symtabs_matching callback. */ |
| 325 | |
| 326 | struct symbol_matcher_data |
| 327 | { |
| 328 | /* The lookup name against which symbol name should be compared. */ |
| 329 | const char *lookup_name; |
| 330 | |
| 331 | /* The routine to be used for comparison. */ |
| 332 | symbol_name_cmp_ftype symbol_name_cmp; |
| 333 | }; |
| 334 | |
| 335 | /* A helper for iterate_over_all_matching_symtabs that is passed as a |
| 336 | callback to the expand_symtabs_matching method. */ |
| 337 | |
| 338 | static int |
| 339 | iterate_name_matcher (const char *name, void *d) |
| 340 | { |
| 341 | const struct symbol_matcher_data *data = d; |
| 342 | |
| 343 | if (data->symbol_name_cmp (name, data->lookup_name) == 0) |
| 344 | return 1; /* Expand this symbol's symbol table. */ |
| 345 | return 0; /* Skip this symbol. */ |
| 346 | } |
| 347 | |
| 348 | /* A helper that walks over all matching symtabs in all objfiles and |
| 349 | calls CALLBACK for each symbol matching NAME. If SEARCH_PSPACE is |
| 350 | not NULL, then the search is restricted to just that program |
| 351 | space. */ |
| 352 | |
| 353 | static void |
| 354 | iterate_over_all_matching_symtabs (const char *name, |
| 355 | const domain_enum domain, |
| 356 | symbol_found_callback_ftype *callback, |
| 357 | void *data, |
| 358 | struct program_space *search_pspace) |
| 359 | { |
| 360 | struct objfile *objfile; |
| 361 | struct program_space *pspace; |
| 362 | struct symbol_matcher_data matcher_data; |
| 363 | |
| 364 | matcher_data.lookup_name = name; |
| 365 | matcher_data.symbol_name_cmp = |
| 366 | current_language->la_get_symbol_name_cmp != NULL |
| 367 | ? current_language->la_get_symbol_name_cmp (name) |
| 368 | : strcmp_iw; |
| 369 | |
| 370 | ALL_PSPACES (pspace) |
| 371 | { |
| 372 | if (search_pspace != NULL && search_pspace != pspace) |
| 373 | continue; |
| 374 | if (pspace->executing_startup) |
| 375 | continue; |
| 376 | |
| 377 | set_current_program_space (pspace); |
| 378 | |
| 379 | ALL_OBJFILES (objfile) |
| 380 | { |
| 381 | struct symtab *symtab; |
| 382 | |
| 383 | if (objfile->sf) |
| 384 | objfile->sf->qf->expand_symtabs_matching (objfile, NULL, |
| 385 | iterate_name_matcher, |
| 386 | ALL_DOMAIN, |
| 387 | &matcher_data); |
| 388 | |
| 389 | ALL_OBJFILE_SYMTABS (objfile, symtab) |
| 390 | { |
| 391 | if (symtab->primary) |
| 392 | { |
| 393 | struct block *block; |
| 394 | |
| 395 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); |
| 396 | LA_ITERATE_OVER_SYMBOLS (block, name, domain, callback, data); |
| 397 | } |
| 398 | } |
| 399 | } |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | /* Returns the block to be used for symbol searches for the given SYMTAB, |
| 404 | which may be NULL. */ |
| 405 | |
| 406 | static struct block * |
| 407 | get_search_block (struct symtab *symtab) |
| 408 | { |
| 409 | struct block *block; |
| 410 | |
| 411 | if (symtab != NULL) |
| 412 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); |
| 413 | else |
| 414 | { |
| 415 | enum language save_language; |
| 416 | |
| 417 | /* get_selected_block can change the current language when there is |
| 418 | no selected frame yet. */ |
| 419 | save_language = current_language->la_language; |
| 420 | block = get_selected_block (0); |
| 421 | set_language (save_language); |
| 422 | } |
| 423 | |
| 424 | return block; |
| 425 | } |
| 426 | |
| 427 | /* A helper for find_method. This finds all methods in type T which |
| 428 | match NAME. It adds resulting symbol names to RESULT_NAMES, and |
| 429 | adds T's direct superclasses to SUPERCLASSES. */ |
| 430 | |
| 431 | static void |
| 432 | find_methods (struct type *t, const char *name, |
| 433 | VEC (const_char_ptr) **result_names, |
| 434 | VEC (typep) **superclasses) |
| 435 | { |
| 436 | int i1 = 0; |
| 437 | int ibase; |
| 438 | const char *class_name = type_name_no_tag (t); |
| 439 | |
| 440 | /* Ignore this class if it doesn't have a name. This is ugly, but |
| 441 | unless we figure out how to get the physname without the name of |
| 442 | the class, then the loop can't do any good. */ |
| 443 | if (class_name) |
| 444 | { |
| 445 | int method_counter; |
| 446 | int name_len = strlen (name); |
| 447 | |
| 448 | CHECK_TYPEDEF (t); |
| 449 | |
| 450 | /* Loop over each method name. At this level, all overloads of a name |
| 451 | are counted as a single name. There is an inner loop which loops over |
| 452 | each overload. */ |
| 453 | |
| 454 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; |
| 455 | method_counter >= 0; |
| 456 | --method_counter) |
| 457 | { |
| 458 | const char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); |
| 459 | char dem_opname[64]; |
| 460 | |
| 461 | if (strncmp (method_name, "__", 2) == 0 || |
| 462 | strncmp (method_name, "op", 2) == 0 || |
| 463 | strncmp (method_name, "type", 4) == 0) |
| 464 | { |
| 465 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) |
| 466 | method_name = dem_opname; |
| 467 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) |
| 468 | method_name = dem_opname; |
| 469 | } |
| 470 | |
| 471 | if (strcmp_iw (method_name, name) == 0) |
| 472 | { |
| 473 | int field_counter; |
| 474 | |
| 475 | for (field_counter = (TYPE_FN_FIELDLIST_LENGTH (t, method_counter) |
| 476 | - 1); |
| 477 | field_counter >= 0; |
| 478 | --field_counter) |
| 479 | { |
| 480 | struct fn_field *f; |
| 481 | const char *phys_name; |
| 482 | |
| 483 | f = TYPE_FN_FIELDLIST1 (t, method_counter); |
| 484 | if (TYPE_FN_FIELD_STUB (f, field_counter)) |
| 485 | continue; |
| 486 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); |
| 487 | VEC_safe_push (const_char_ptr, *result_names, phys_name); |
| 488 | } |
| 489 | } |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) |
| 494 | VEC_safe_push (typep, *superclasses, TYPE_BASECLASS (t, ibase)); |
| 495 | } |
| 496 | |
| 497 | /* Find an instance of the character C in the string S that is outside |
| 498 | of all parenthesis pairs, single-quoted strings, and double-quoted |
| 499 | strings. Also, ignore the char within a template name, like a ',' |
| 500 | within foo<int, int>. */ |
| 501 | |
| 502 | static char * |
| 503 | find_toplevel_char (char *s, char c) |
| 504 | { |
| 505 | int quoted = 0; /* zero if we're not in quotes; |
| 506 | '"' if we're in a double-quoted string; |
| 507 | '\'' if we're in a single-quoted string. */ |
| 508 | int depth = 0; /* Number of unclosed parens we've seen. */ |
| 509 | char *scan; |
| 510 | |
| 511 | for (scan = s; *scan; scan++) |
| 512 | { |
| 513 | if (quoted) |
| 514 | { |
| 515 | if (*scan == quoted) |
| 516 | quoted = 0; |
| 517 | else if (*scan == '\\' && *(scan + 1)) |
| 518 | scan++; |
| 519 | } |
| 520 | else if (*scan == c && ! quoted && depth == 0) |
| 521 | return scan; |
| 522 | else if (*scan == '"' || *scan == '\'') |
| 523 | quoted = *scan; |
| 524 | else if (*scan == '(' || *scan == '<') |
| 525 | depth++; |
| 526 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
| 527 | depth--; |
| 528 | } |
| 529 | |
| 530 | return 0; |
| 531 | } |
| 532 | |
| 533 | /* Determines if the gives string corresponds to an Objective-C method |
| 534 | representation, such as -[Foo bar:] or +[Foo bar]. Objective-C symbols |
| 535 | are allowed to have spaces and parentheses in them. */ |
| 536 | |
| 537 | static int |
| 538 | is_objc_method_format (const char *s) |
| 539 | { |
| 540 | if (s == NULL || *s == '\0') |
| 541 | return 0; |
| 542 | /* Handle arguments with the format FILENAME:SYMBOL. */ |
| 543 | if ((s[0] == ':') && (strchr ("+-", s[1]) != NULL) |
| 544 | && (s[2] == '[') && strchr(s, ']')) |
| 545 | return 1; |
| 546 | /* Handle arguments that are just SYMBOL. */ |
| 547 | else if ((strchr ("+-", s[0]) != NULL) && (s[1] == '[') && strchr(s, ']')) |
| 548 | return 1; |
| 549 | return 0; |
| 550 | } |
| 551 | |
| 552 | /* Given FILTERS, a list of canonical names, filter the sals in RESULT |
| 553 | and store the result in SELF->CANONICAL. */ |
| 554 | |
| 555 | static void |
| 556 | filter_results (struct linespec_state *self, |
| 557 | struct symtabs_and_lines *result, |
| 558 | VEC (const_char_ptr) *filters) |
| 559 | { |
| 560 | int i; |
| 561 | const char *name; |
| 562 | |
| 563 | for (i = 0; VEC_iterate (const_char_ptr, filters, i, name); ++i) |
| 564 | { |
| 565 | struct linespec_sals lsal; |
| 566 | int j; |
| 567 | |
| 568 | memset (&lsal, 0, sizeof (lsal)); |
| 569 | |
| 570 | for (j = 0; j < result->nelts; ++j) |
| 571 | { |
| 572 | if (strcmp (name, self->canonical_names[j]) == 0) |
| 573 | add_sal_to_sals_basic (&lsal.sals, &result->sals[j]); |
| 574 | } |
| 575 | |
| 576 | if (lsal.sals.nelts > 0) |
| 577 | { |
| 578 | lsal.canonical = xstrdup (name); |
| 579 | VEC_safe_push (linespec_sals, self->canonical->sals, &lsal); |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | self->canonical->pre_expanded = 0; |
| 584 | } |
| 585 | |
| 586 | /* Store RESULT into SELF->CANONICAL. */ |
| 587 | |
| 588 | static void |
| 589 | convert_results_to_lsals (struct linespec_state *self, |
| 590 | struct symtabs_and_lines *result) |
| 591 | { |
| 592 | struct linespec_sals lsal; |
| 593 | |
| 594 | lsal.canonical = NULL; |
| 595 | lsal.sals = *result; |
| 596 | VEC_safe_push (linespec_sals, self->canonical->sals, &lsal); |
| 597 | } |
| 598 | |
| 599 | /* Handle multiple results in RESULT depending on SELECT_MODE. This |
| 600 | will either return normally, throw an exception on multiple |
| 601 | results, or present a menu to the user. On return, the SALS vector |
| 602 | in SELF->CANONICAL is set up properly. */ |
| 603 | |
| 604 | static void |
| 605 | decode_line_2 (struct linespec_state *self, |
| 606 | struct symtabs_and_lines *result, |
| 607 | const char *select_mode) |
| 608 | { |
| 609 | const char *iter; |
| 610 | char *args, *prompt; |
| 611 | int i; |
| 612 | struct cleanup *old_chain; |
| 613 | VEC (const_char_ptr) *item_names = NULL, *filters = NULL; |
| 614 | struct get_number_or_range_state state; |
| 615 | |
| 616 | gdb_assert (select_mode != multiple_symbols_all); |
| 617 | gdb_assert (self->canonical != NULL); |
| 618 | |
| 619 | old_chain = make_cleanup (VEC_cleanup (const_char_ptr), &item_names); |
| 620 | make_cleanup (VEC_cleanup (const_char_ptr), &filters); |
| 621 | for (i = 0; i < result->nelts; ++i) |
| 622 | { |
| 623 | int j, found = 0; |
| 624 | const char *iter; |
| 625 | |
| 626 | gdb_assert (self->canonical_names[i] != NULL); |
| 627 | for (j = 0; VEC_iterate (const_char_ptr, item_names, j, iter); ++j) |
| 628 | { |
| 629 | if (strcmp (iter, self->canonical_names[i]) == 0) |
| 630 | { |
| 631 | found = 1; |
| 632 | break; |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | if (!found) |
| 637 | VEC_safe_push (const_char_ptr, item_names, self->canonical_names[i]); |
| 638 | } |
| 639 | |
| 640 | if (select_mode == multiple_symbols_cancel |
| 641 | && VEC_length (const_char_ptr, item_names) > 1) |
| 642 | error (_("canceled because the command is ambiguous\n" |
| 643 | "See set/show multiple-symbol.")); |
| 644 | |
| 645 | if (select_mode == multiple_symbols_all |
| 646 | || VEC_length (const_char_ptr, item_names) == 1) |
| 647 | { |
| 648 | do_cleanups (old_chain); |
| 649 | convert_results_to_lsals (self, result); |
| 650 | return; |
| 651 | } |
| 652 | |
| 653 | printf_unfiltered (_("[0] cancel\n[1] all\n")); |
| 654 | for (i = 0; VEC_iterate (const_char_ptr, item_names, i, iter); ++i) |
| 655 | printf_unfiltered ("[%d] %s\n", i + 2, iter); |
| 656 | |
| 657 | prompt = getenv ("PS2"); |
| 658 | if (prompt == NULL) |
| 659 | { |
| 660 | prompt = "> "; |
| 661 | } |
| 662 | args = command_line_input (prompt, 0, "overload-choice"); |
| 663 | |
| 664 | if (args == 0 || *args == 0) |
| 665 | error_no_arg (_("one or more choice numbers")); |
| 666 | |
| 667 | init_number_or_range (&state, args); |
| 668 | while (!state.finished) |
| 669 | { |
| 670 | int num; |
| 671 | |
| 672 | num = get_number_or_range (&state); |
| 673 | |
| 674 | if (num == 0) |
| 675 | error (_("canceled")); |
| 676 | else if (num == 1) |
| 677 | { |
| 678 | /* We intentionally make this result in a single breakpoint, |
| 679 | contrary to what older versions of gdb did. The |
| 680 | rationale is that this lets a user get the |
| 681 | multiple_symbols_all behavior even with the 'ask' |
| 682 | setting; and he can get separate breakpoints by entering |
| 683 | "2-57" at the query. */ |
| 684 | do_cleanups (old_chain); |
| 685 | convert_results_to_lsals (self, result); |
| 686 | return; |
| 687 | } |
| 688 | |
| 689 | num -= 2; |
| 690 | if (num >= VEC_length (const_char_ptr, item_names)) |
| 691 | printf_unfiltered (_("No choice number %d.\n"), num); |
| 692 | else |
| 693 | { |
| 694 | const char *elt = VEC_index (const_char_ptr, item_names, num); |
| 695 | |
| 696 | if (elt != NULL) |
| 697 | { |
| 698 | VEC_safe_push (const_char_ptr, filters, elt); |
| 699 | VEC_replace (const_char_ptr, item_names, num, NULL); |
| 700 | } |
| 701 | else |
| 702 | { |
| 703 | printf_unfiltered (_("duplicate request for %d ignored.\n"), |
| 704 | num); |
| 705 | } |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | filter_results (self, result, filters); |
| 710 | do_cleanups (old_chain); |
| 711 | } |
| 712 | |
| 713 | /* Valid delimiters for linespec keywords "if", "thread" or "task". */ |
| 714 | |
| 715 | static int |
| 716 | is_linespec_boundary (char c) |
| 717 | { |
| 718 | return c == ' ' || c == '\t' || c == '\0' || c == ','; |
| 719 | } |
| 720 | |
| 721 | /* A helper function for decode_line_1 and friends which skips P |
| 722 | past any method overload information at the beginning of P, e.g., |
| 723 | "(const struct foo *)". |
| 724 | |
| 725 | This function assumes that P has already been validated to contain |
| 726 | overload information, and it will assert if *P != '('. */ |
| 727 | static char * |
| 728 | find_method_overload_end (char *p) |
| 729 | { |
| 730 | int depth = 0; |
| 731 | |
| 732 | gdb_assert (*p == '('); |
| 733 | |
| 734 | while (*p) |
| 735 | { |
| 736 | if (*p == '(') |
| 737 | ++depth; |
| 738 | else if (*p == ')') |
| 739 | { |
| 740 | if (--depth == 0) |
| 741 | { |
| 742 | ++p; |
| 743 | break; |
| 744 | } |
| 745 | } |
| 746 | ++p; |
| 747 | } |
| 748 | |
| 749 | return p; |
| 750 | } |
| 751 | |
| 752 | /* Keep important information used when looking up a name. This includes |
| 753 | template parameters, overload information, and important keywords, including |
| 754 | the possible Java trailing type. */ |
| 755 | |
| 756 | static char * |
| 757 | keep_name_info (char *p, int on_boundary) |
| 758 | { |
| 759 | const char *quotes = get_gdb_completer_quote_characters (); |
| 760 | char *saved_p = p; |
| 761 | int nest = 0; |
| 762 | |
| 763 | while (*p) |
| 764 | { |
| 765 | if (strchr (quotes, *p)) |
| 766 | break; |
| 767 | |
| 768 | if (*p == ',' && !nest) |
| 769 | break; |
| 770 | |
| 771 | if (on_boundary && !nest) |
| 772 | { |
| 773 | const char *const words[] = { "if", "thread", "task" }; |
| 774 | int wordi; |
| 775 | |
| 776 | for (wordi = 0; wordi < ARRAY_SIZE (words); wordi++) |
| 777 | if (strncmp (p, words[wordi], strlen (words[wordi])) == 0 |
| 778 | && is_linespec_boundary (p[strlen (words[wordi])])) |
| 779 | break; |
| 780 | if (wordi < ARRAY_SIZE (words)) |
| 781 | break; |
| 782 | } |
| 783 | |
| 784 | if (*p == '(' || *p == '<' || *p == '[') |
| 785 | nest++; |
| 786 | else if ((*p == ')' || *p == '>' || *p == ']') && nest > 0) |
| 787 | nest--; |
| 788 | |
| 789 | p++; |
| 790 | |
| 791 | /* The ',' check could fail on "operator ,". */ |
| 792 | p += cp_validate_operator (p); |
| 793 | |
| 794 | on_boundary = is_linespec_boundary (p[-1]); |
| 795 | } |
| 796 | |
| 797 | while (p > saved_p && is_linespec_boundary (p[-1])) |
| 798 | p--; |
| 799 | |
| 800 | return p; |
| 801 | } |
| 802 | |
| 803 | \f |
| 804 | /* The parser of linespec itself. */ |
| 805 | |
| 806 | /* Parse a string that specifies a line number. |
| 807 | Pass the address of a char * variable; that variable will be |
| 808 | advanced over the characters actually parsed. |
| 809 | |
| 810 | The string can be: |
| 811 | |
| 812 | LINENUM -- that line number in current file. PC returned is 0. |
| 813 | FILE:LINENUM -- that line in that file. PC returned is 0. |
| 814 | FUNCTION -- line number of openbrace of that function. |
| 815 | PC returned is the start of the function. |
| 816 | LABEL -- a label in the current scope |
| 817 | VARIABLE -- line number of definition of that variable. |
| 818 | PC returned is 0. |
| 819 | FILE:FUNCTION -- likewise, but prefer functions in that file. |
| 820 | *EXPR -- line in which address EXPR appears. |
| 821 | |
| 822 | This may all be followed by an "if EXPR", which we ignore. |
| 823 | |
| 824 | FUNCTION may be an undebuggable function found in minimal symbol table. |
| 825 | |
| 826 | If the argument FUNFIRSTLINE is nonzero, we want the first line |
| 827 | of real code inside a function when a function is specified, and it is |
| 828 | not OK to specify a variable or type to get its line number. |
| 829 | |
| 830 | DEFAULT_SYMTAB specifies the file to use if none is specified. |
| 831 | It defaults to current_source_symtab. |
| 832 | DEFAULT_LINE specifies the line number to use for relative |
| 833 | line numbers (that start with signs). Defaults to current_source_line. |
| 834 | If CANONICAL is non-NULL, store an array of strings containing the canonical |
| 835 | line specs there if necessary. Currently overloaded member functions and |
| 836 | line numbers or static functions without a filename yield a canonical |
| 837 | line spec. The array and the line spec strings are allocated on the heap, |
| 838 | it is the callers responsibility to free them. |
| 839 | |
| 840 | Note that it is possible to return zero for the symtab |
| 841 | if no file is validly specified. Callers must check that. |
| 842 | Also, the line number returned may be invalid. */ |
| 843 | |
| 844 | /* We allow single quotes in various places. This is a hideous |
| 845 | kludge, which exists because the completer can't yet deal with the |
| 846 | lack of single quotes. FIXME: write a linespec_completer which we |
| 847 | can use as appropriate instead of make_symbol_completion_list. */ |
| 848 | |
| 849 | static struct symtabs_and_lines |
| 850 | decode_line_internal (struct linespec_state *self, char **argptr) |
| 851 | { |
| 852 | char *p; |
| 853 | char *q; |
| 854 | |
| 855 | char *copy; |
| 856 | /* This says whether or not something in *ARGPTR is quoted with |
| 857 | completer_quotes (i.e. with single quotes). */ |
| 858 | int is_quoted; |
| 859 | /* Is *ARGPTR enclosed in double quotes? */ |
| 860 | int is_quote_enclosed; |
| 861 | int is_objc_method = 0; |
| 862 | char *saved_arg = *argptr; |
| 863 | /* If IS_QUOTED, the end of the quoted bit. */ |
| 864 | char *end_quote = NULL; |
| 865 | /* Is *ARGPTR enclosed in single quotes? */ |
| 866 | int is_squote_enclosed = 0; |
| 867 | /* The "first half" of the linespec. */ |
| 868 | char *first_half; |
| 869 | |
| 870 | /* If we are parsing `function:label', this holds the symbols |
| 871 | matching the function name. */ |
| 872 | VEC (symbolp) *function_symbols = NULL; |
| 873 | /* If FUNCTION_SYMBOLS is not NULL, then this is the exception that |
| 874 | was thrown when trying to parse a filename. */ |
| 875 | volatile struct gdb_exception file_exception; |
| 876 | |
| 877 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
| 878 | |
| 879 | /* Defaults have defaults. */ |
| 880 | |
| 881 | initialize_defaults (&self->default_symtab, &self->default_line); |
| 882 | |
| 883 | /* See if arg is *PC. */ |
| 884 | |
| 885 | if (**argptr == '*') |
| 886 | { |
| 887 | do_cleanups (cleanup); |
| 888 | return decode_indirect (self, argptr); |
| 889 | } |
| 890 | |
| 891 | is_quoted = (strchr (get_gdb_completer_quote_characters (), |
| 892 | **argptr) != NULL); |
| 893 | |
| 894 | if (is_quoted) |
| 895 | { |
| 896 | end_quote = skip_quoted (*argptr); |
| 897 | if (*end_quote == '\0') |
| 898 | is_squote_enclosed = 1; |
| 899 | } |
| 900 | |
| 901 | /* Check to see if it's a multipart linespec (with colons or |
| 902 | periods). */ |
| 903 | |
| 904 | /* Locate the end of the first half of the linespec. |
| 905 | After the call, for instance, if the argptr string is "foo.c:123" |
| 906 | p will point at "123". If there is only one part, like "foo", p |
| 907 | will point to "". If this is a C++ name, like "A::B::foo", p will |
| 908 | point to "::B::foo". Argptr is not changed by this call. */ |
| 909 | |
| 910 | first_half = p = locate_first_half (argptr, &is_quote_enclosed); |
| 911 | |
| 912 | /* First things first: if ARGPTR starts with a filename, get its |
| 913 | symtab and strip the filename from ARGPTR. |
| 914 | Avoid calling symtab_from_filename if we know can, |
| 915 | it can be expensive. */ |
| 916 | |
| 917 | if (*p != '\0') |
| 918 | { |
| 919 | TRY_CATCH (file_exception, RETURN_MASK_ERROR) |
| 920 | { |
| 921 | self->file_symtabs = symtabs_from_filename (argptr, p, |
| 922 | is_quote_enclosed, |
| 923 | &self->user_filename); |
| 924 | } |
| 925 | |
| 926 | if (file_exception.reason >= 0) |
| 927 | { |
| 928 | /* Check for single quotes on the non-filename part. */ |
| 929 | is_quoted = (**argptr |
| 930 | && strchr (get_gdb_completer_quote_characters (), |
| 931 | **argptr) != NULL); |
| 932 | if (is_quoted) |
| 933 | end_quote = skip_quoted (*argptr); |
| 934 | |
| 935 | /* Locate the next "half" of the linespec. */ |
| 936 | first_half = p = locate_first_half (argptr, &is_quote_enclosed); |
| 937 | } |
| 938 | |
| 939 | if (VEC_empty (symtab_p, self->file_symtabs)) |
| 940 | { |
| 941 | /* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */ |
| 942 | VEC_safe_push (symtab_p, self->file_symtabs, NULL); |
| 943 | } |
| 944 | } |
| 945 | else |
| 946 | { |
| 947 | /* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */ |
| 948 | VEC_safe_push (symtab_p, self->file_symtabs, NULL); |
| 949 | } |
| 950 | |
| 951 | /* Check if this is an Objective-C method (anything that starts with |
| 952 | a '+' or '-' and a '['). */ |
| 953 | if (is_objc_method_format (p)) |
| 954 | is_objc_method = 1; |
| 955 | |
| 956 | /* Check if the symbol could be an Objective-C selector. */ |
| 957 | |
| 958 | { |
| 959 | struct symtabs_and_lines values; |
| 960 | |
| 961 | values = decode_objc (self, argptr); |
| 962 | if (values.sals != NULL) |
| 963 | { |
| 964 | do_cleanups (cleanup); |
| 965 | return values; |
| 966 | } |
| 967 | } |
| 968 | |
| 969 | /* Does it look like there actually were two parts? */ |
| 970 | |
| 971 | if (p[0] == ':' || p[0] == '.') |
| 972 | { |
| 973 | /* Is it a C++ or Java compound data structure? |
| 974 | The check on p[1] == ':' is capturing the case of "::", |
| 975 | since p[0]==':' was checked above. |
| 976 | Note that the call to decode_compound does everything |
| 977 | for us, including the lookup on the symbol table, so we |
| 978 | can return now. */ |
| 979 | |
| 980 | if (p[0] == '.' || p[1] == ':') |
| 981 | { |
| 982 | /* We only perform this check for the languages where it might |
| 983 | make sense. For instance, Ada does not use this type of |
| 984 | syntax, and trying to apply this logic on an Ada linespec |
| 985 | may trigger a spurious error (for instance, decode_compound |
| 986 | does not like expressions such as `ops."<"', which is a |
| 987 | valid function name in Ada). */ |
| 988 | if (current_language->la_language == language_c |
| 989 | || current_language->la_language == language_cplus |
| 990 | || current_language->la_language == language_java) |
| 991 | { |
| 992 | struct symtabs_and_lines values; |
| 993 | volatile struct gdb_exception ex; |
| 994 | char *saved_argptr = *argptr; |
| 995 | |
| 996 | if (is_quote_enclosed) |
| 997 | ++saved_arg; |
| 998 | |
| 999 | /* Initialize it just to avoid a GCC false warning. */ |
| 1000 | memset (&values, 0, sizeof (values)); |
| 1001 | |
| 1002 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
| 1003 | { |
| 1004 | values = decode_compound (self, argptr, saved_arg, p); |
| 1005 | } |
| 1006 | if ((is_quoted || is_squote_enclosed) && **argptr == '\'') |
| 1007 | *argptr = *argptr + 1; |
| 1008 | |
| 1009 | if (ex.reason >= 0) |
| 1010 | { |
| 1011 | do_cleanups (cleanup); |
| 1012 | return values; |
| 1013 | } |
| 1014 | |
| 1015 | if (ex.error != NOT_FOUND_ERROR) |
| 1016 | throw_exception (ex); |
| 1017 | |
| 1018 | *argptr = saved_argptr; |
| 1019 | } |
| 1020 | } |
| 1021 | else |
| 1022 | { |
| 1023 | /* If there was an exception looking up a specified filename earlier, |
| 1024 | then check whether we were really given `function:label'. */ |
| 1025 | if (file_exception.reason < 0) |
| 1026 | { |
| 1027 | function_symbols = find_function_symbols (argptr, p, |
| 1028 | is_quote_enclosed, |
| 1029 | &self->user_function); |
| 1030 | |
| 1031 | /* If we did not find a function, re-throw the original |
| 1032 | exception. */ |
| 1033 | if (!function_symbols) |
| 1034 | throw_exception (file_exception); |
| 1035 | |
| 1036 | make_cleanup (VEC_cleanup (symbolp), &function_symbols); |
| 1037 | } |
| 1038 | |
| 1039 | /* Check for single quotes on the non-filename part. */ |
| 1040 | if (!is_quoted) |
| 1041 | { |
| 1042 | is_quoted = (**argptr |
| 1043 | && strchr (get_gdb_completer_quote_characters (), |
| 1044 | **argptr) != NULL); |
| 1045 | if (is_quoted) |
| 1046 | end_quote = skip_quoted (*argptr); |
| 1047 | } |
| 1048 | } |
| 1049 | } |
| 1050 | |
| 1051 | /* self->file_symtabs holds the specified file symtabs, or 0 if no file |
| 1052 | specified. |
| 1053 | If we are parsing `function:symbol', then FUNCTION_SYMBOLS holds the |
| 1054 | functions before the `:'. |
| 1055 | arg no longer contains the file name. */ |
| 1056 | |
| 1057 | /* If the filename was quoted, we must re-check the quotation. */ |
| 1058 | |
| 1059 | if (end_quote == first_half && *end_quote!= '\0') |
| 1060 | { |
| 1061 | is_quoted = (**argptr |
| 1062 | && strchr (get_gdb_completer_quote_characters (), |
| 1063 | **argptr) != NULL); |
| 1064 | if (is_quoted) |
| 1065 | end_quote = skip_quoted (*argptr); |
| 1066 | } |
| 1067 | |
| 1068 | /* Check whether arg is all digits (and sign). */ |
| 1069 | |
| 1070 | q = *argptr; |
| 1071 | if (*q == '-' || *q == '+') |
| 1072 | q++; |
| 1073 | while (*q >= '0' && *q <= '9') |
| 1074 | q++; |
| 1075 | |
| 1076 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',') |
| 1077 | && function_symbols == NULL) |
| 1078 | { |
| 1079 | struct symtabs_and_lines values; |
| 1080 | |
| 1081 | /* We found a token consisting of all digits -- at least one digit. */ |
| 1082 | values = decode_all_digits (self, argptr, q); |
| 1083 | do_cleanups (cleanup); |
| 1084 | return values; |
| 1085 | } |
| 1086 | |
| 1087 | /* Arg token is not digits => try it as a variable name |
| 1088 | Find the next token (everything up to end or next whitespace). */ |
| 1089 | |
| 1090 | if (**argptr == '$') /* May be a convenience variable. */ |
| 1091 | /* One or two $ chars possible. */ |
| 1092 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); |
| 1093 | else if (is_quoted || is_squote_enclosed) |
| 1094 | { |
| 1095 | p = end_quote; |
| 1096 | if (p[-1] != '\'') |
| 1097 | error (_("Unmatched single quote.")); |
| 1098 | } |
| 1099 | else if (is_objc_method) |
| 1100 | { |
| 1101 | /* allow word separators in method names for Obj-C. */ |
| 1102 | p = skip_quoted_chars (*argptr, NULL, ""); |
| 1103 | } |
| 1104 | else |
| 1105 | { |
| 1106 | p = skip_quoted (*argptr); |
| 1107 | } |
| 1108 | |
| 1109 | /* Keep any important naming information. */ |
| 1110 | p = keep_name_info (p, p == saved_arg || is_linespec_boundary (p[-1])); |
| 1111 | |
| 1112 | copy = (char *) alloca (p - *argptr + 1); |
| 1113 | memcpy (copy, *argptr, p - *argptr); |
| 1114 | copy[p - *argptr] = '\0'; |
| 1115 | if (p != *argptr |
| 1116 | && copy[0] |
| 1117 | && copy[0] == copy[p - *argptr - 1] |
| 1118 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
| 1119 | { |
| 1120 | copy[p - *argptr - 1] = '\0'; |
| 1121 | copy++; |
| 1122 | } |
| 1123 | else if (is_quoted || is_squote_enclosed) |
| 1124 | copy[p - *argptr - 1] = '\0'; |
| 1125 | |
| 1126 | *argptr = skip_spaces (p); |
| 1127 | |
| 1128 | /* If it starts with $: may be a legitimate variable or routine name |
| 1129 | (e.g. HP-UX millicode routines such as $$dyncall), or it may |
| 1130 | be history value, or it may be a convenience variable. */ |
| 1131 | |
| 1132 | if (*copy == '$' && function_symbols == NULL) |
| 1133 | { |
| 1134 | struct symtabs_and_lines values; |
| 1135 | |
| 1136 | values = decode_dollar (self, copy); |
| 1137 | do_cleanups (cleanup); |
| 1138 | return values; |
| 1139 | } |
| 1140 | |
| 1141 | /* Try the token as a label, but only if no file was specified, |
| 1142 | because we can only really find labels in the current scope. */ |
| 1143 | |
| 1144 | if (VEC_length (symtab_p, self->file_symtabs) == 1 |
| 1145 | && VEC_index (symtab_p, self->file_symtabs, 0) == NULL) |
| 1146 | { |
| 1147 | struct symtabs_and_lines label_result; |
| 1148 | if (decode_label (self, function_symbols, copy, &label_result)) |
| 1149 | { |
| 1150 | do_cleanups (cleanup); |
| 1151 | return label_result; |
| 1152 | } |
| 1153 | } |
| 1154 | |
| 1155 | if (function_symbols) |
| 1156 | throw_exception (file_exception); |
| 1157 | |
| 1158 | /* Look up that token as a variable. |
| 1159 | If file specified, use that file's per-file block to start with. */ |
| 1160 | |
| 1161 | { |
| 1162 | struct symtabs_and_lines values; |
| 1163 | |
| 1164 | values = decode_variable (self, copy); |
| 1165 | do_cleanups (cleanup); |
| 1166 | return values; |
| 1167 | } |
| 1168 | } |
| 1169 | |
| 1170 | /* A constructor for linespec_state. */ |
| 1171 | |
| 1172 | static void |
| 1173 | linespec_state_constructor (struct linespec_state *self, |
| 1174 | int flags, |
| 1175 | struct symtab *default_symtab, |
| 1176 | int default_line, |
| 1177 | struct linespec_result *canonical) |
| 1178 | { |
| 1179 | memset (self, 0, sizeof (*self)); |
| 1180 | self->funfirstline = (flags & DECODE_LINE_FUNFIRSTLINE) ? 1 : 0; |
| 1181 | self->list_mode = (flags & DECODE_LINE_LIST_MODE) ? 1 : 0; |
| 1182 | self->default_symtab = default_symtab; |
| 1183 | self->default_line = default_line; |
| 1184 | self->canonical = canonical; |
| 1185 | self->program_space = current_program_space; |
| 1186 | self->addr_set = htab_create_alloc (10, hash_address_entry, eq_address_entry, |
| 1187 | xfree, xcalloc, xfree); |
| 1188 | } |
| 1189 | |
| 1190 | /* A destructor for linespec_state. */ |
| 1191 | |
| 1192 | static void |
| 1193 | linespec_state_destructor (void *arg) |
| 1194 | { |
| 1195 | struct linespec_state *self = arg; |
| 1196 | |
| 1197 | xfree (self->user_filename); |
| 1198 | xfree (self->user_function); |
| 1199 | VEC_free (symtab_p, self->file_symtabs); |
| 1200 | htab_delete (self->addr_set); |
| 1201 | } |
| 1202 | |
| 1203 | /* See linespec.h. */ |
| 1204 | |
| 1205 | void |
| 1206 | decode_line_full (char **argptr, int flags, |
| 1207 | struct symtab *default_symtab, |
| 1208 | int default_line, struct linespec_result *canonical, |
| 1209 | const char *select_mode, |
| 1210 | const char *filter) |
| 1211 | { |
| 1212 | struct symtabs_and_lines result; |
| 1213 | struct linespec_state state; |
| 1214 | struct cleanup *cleanups; |
| 1215 | char *arg_start = *argptr; |
| 1216 | VEC (const_char_ptr) *filters = NULL; |
| 1217 | |
| 1218 | gdb_assert (canonical != NULL); |
| 1219 | /* The filter only makes sense for 'all'. */ |
| 1220 | gdb_assert (filter == NULL || select_mode == multiple_symbols_all); |
| 1221 | gdb_assert (select_mode == NULL |
| 1222 | || select_mode == multiple_symbols_all |
| 1223 | || select_mode == multiple_symbols_ask |
| 1224 | || select_mode == multiple_symbols_cancel); |
| 1225 | gdb_assert ((flags & DECODE_LINE_LIST_MODE) == 0); |
| 1226 | |
| 1227 | linespec_state_constructor (&state, flags, |
| 1228 | default_symtab, default_line, canonical); |
| 1229 | cleanups = make_cleanup (linespec_state_destructor, &state); |
| 1230 | save_current_program_space (); |
| 1231 | |
| 1232 | result = decode_line_internal (&state, argptr); |
| 1233 | |
| 1234 | gdb_assert (result.nelts == 1 || canonical->pre_expanded); |
| 1235 | gdb_assert (canonical->addr_string != NULL); |
| 1236 | canonical->pre_expanded = 1; |
| 1237 | |
| 1238 | /* Fill in the missing canonical names. */ |
| 1239 | if (result.nelts > 0) |
| 1240 | { |
| 1241 | int i; |
| 1242 | |
| 1243 | if (state.canonical_names == NULL) |
| 1244 | state.canonical_names = xcalloc (result.nelts, sizeof (char *)); |
| 1245 | make_cleanup (xfree, state.canonical_names); |
| 1246 | for (i = 0; i < result.nelts; ++i) |
| 1247 | { |
| 1248 | if (state.canonical_names[i] == NULL) |
| 1249 | state.canonical_names[i] = savestring (arg_start, |
| 1250 | *argptr - arg_start); |
| 1251 | make_cleanup (xfree, state.canonical_names[i]); |
| 1252 | } |
| 1253 | } |
| 1254 | |
| 1255 | if (select_mode == NULL) |
| 1256 | { |
| 1257 | if (ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ()))) |
| 1258 | select_mode = multiple_symbols_all; |
| 1259 | else |
| 1260 | select_mode = multiple_symbols_select_mode (); |
| 1261 | } |
| 1262 | |
| 1263 | if (select_mode == multiple_symbols_all) |
| 1264 | { |
| 1265 | if (filter != NULL) |
| 1266 | { |
| 1267 | make_cleanup (VEC_cleanup (const_char_ptr), &filters); |
| 1268 | VEC_safe_push (const_char_ptr, filters, filter); |
| 1269 | filter_results (&state, &result, filters); |
| 1270 | } |
| 1271 | else |
| 1272 | convert_results_to_lsals (&state, &result); |
| 1273 | } |
| 1274 | else |
| 1275 | decode_line_2 (&state, &result, select_mode); |
| 1276 | |
| 1277 | do_cleanups (cleanups); |
| 1278 | } |
| 1279 | |
| 1280 | struct symtabs_and_lines |
| 1281 | decode_line_1 (char **argptr, int flags, |
| 1282 | struct symtab *default_symtab, |
| 1283 | int default_line) |
| 1284 | { |
| 1285 | struct symtabs_and_lines result; |
| 1286 | struct linespec_state state; |
| 1287 | struct cleanup *cleanups; |
| 1288 | |
| 1289 | linespec_state_constructor (&state, flags, |
| 1290 | default_symtab, default_line, NULL); |
| 1291 | cleanups = make_cleanup (linespec_state_destructor, &state); |
| 1292 | save_current_program_space (); |
| 1293 | |
| 1294 | result = decode_line_internal (&state, argptr); |
| 1295 | do_cleanups (cleanups); |
| 1296 | return result; |
| 1297 | } |
| 1298 | |
| 1299 | \f |
| 1300 | |
| 1301 | /* First, some functions to initialize stuff at the beggining of the |
| 1302 | function. */ |
| 1303 | |
| 1304 | static void |
| 1305 | initialize_defaults (struct symtab **default_symtab, int *default_line) |
| 1306 | { |
| 1307 | if (*default_symtab == 0) |
| 1308 | { |
| 1309 | /* Use whatever we have for the default source line. We don't use |
| 1310 | get_current_or_default_symtab_and_line as it can recurse and call |
| 1311 | us back! */ |
| 1312 | struct symtab_and_line cursal = |
| 1313 | get_current_source_symtab_and_line (); |
| 1314 | |
| 1315 | *default_symtab = cursal.symtab; |
| 1316 | *default_line = cursal.line; |
| 1317 | } |
| 1318 | } |
| 1319 | |
| 1320 | \f |
| 1321 | |
| 1322 | /* Decode arg of the form *PC. */ |
| 1323 | |
| 1324 | static struct symtabs_and_lines |
| 1325 | decode_indirect (struct linespec_state *self, char **argptr) |
| 1326 | { |
| 1327 | struct symtabs_and_lines values; |
| 1328 | CORE_ADDR pc; |
| 1329 | char *initial = *argptr; |
| 1330 | |
| 1331 | if (current_program_space->executing_startup) |
| 1332 | /* The error message doesn't really matter, because this case |
| 1333 | should only hit during breakpoint reset. */ |
| 1334 | throw_error (NOT_FOUND_ERROR, _("cannot evaluate expressions while " |
| 1335 | "program space is in startup")); |
| 1336 | |
| 1337 | (*argptr)++; |
| 1338 | pc = value_as_address (parse_to_comma_and_eval (argptr)); |
| 1339 | |
| 1340 | values.sals = (struct symtab_and_line *) |
| 1341 | xmalloc (sizeof (struct symtab_and_line)); |
| 1342 | |
| 1343 | values.nelts = 1; |
| 1344 | values.sals[0] = find_pc_line (pc, 0); |
| 1345 | values.sals[0].pc = pc; |
| 1346 | values.sals[0].section = find_pc_overlay (pc); |
| 1347 | values.sals[0].explicit_pc = 1; |
| 1348 | |
| 1349 | if (self->canonical) |
| 1350 | self->canonical->addr_string = savestring (initial, *argptr - initial); |
| 1351 | |
| 1352 | return values; |
| 1353 | } |
| 1354 | |
| 1355 | \f |
| 1356 | |
| 1357 | /* Locate the first half of the linespec, ending in a colon, period, |
| 1358 | or whitespace. (More or less.) Also, check to see if *ARGPTR is |
| 1359 | enclosed in double quotes; if so, set is_quote_enclosed, advance |
| 1360 | ARGPTR past that and zero out the trailing double quote. |
| 1361 | If ARGPTR is just a simple name like "main", p will point to "" |
| 1362 | at the end. */ |
| 1363 | |
| 1364 | static char * |
| 1365 | locate_first_half (char **argptr, int *is_quote_enclosed) |
| 1366 | { |
| 1367 | char *ii; |
| 1368 | char *p, *p1; |
| 1369 | int has_comma; |
| 1370 | |
| 1371 | /* Check if the linespec starts with an Ada operator (such as "+", |
| 1372 | or ">", for instance). */ |
| 1373 | p = *argptr; |
| 1374 | if (p[0] == '"' |
| 1375 | && current_language->la_language == language_ada) |
| 1376 | { |
| 1377 | const struct ada_opname_map *op; |
| 1378 | |
| 1379 | for (op = ada_opname_table; op->encoded != NULL; op++) |
| 1380 | if (strncmp (op->decoded, p, strlen (op->decoded)) == 0) |
| 1381 | break; |
| 1382 | if (op->encoded != NULL) |
| 1383 | { |
| 1384 | *is_quote_enclosed = 0; |
| 1385 | return p + strlen (op->decoded); |
| 1386 | } |
| 1387 | } |
| 1388 | |
| 1389 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM |
| 1390 | and we must isolate the first half. Outer layers will call again later |
| 1391 | for the second half. |
| 1392 | |
| 1393 | Don't count commas that appear in argument lists of overloaded |
| 1394 | functions, or in quoted strings. It's stupid to go to this much |
| 1395 | trouble when the rest of the function is such an obvious roach hotel. */ |
| 1396 | ii = find_toplevel_char (*argptr, ','); |
| 1397 | has_comma = (ii != 0); |
| 1398 | |
| 1399 | /* Temporarily zap out second half to not confuse the code below. |
| 1400 | This is undone below. Do not change ii!! */ |
| 1401 | if (has_comma) |
| 1402 | { |
| 1403 | *ii = '\0'; |
| 1404 | } |
| 1405 | |
| 1406 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION. May also be |
| 1407 | CLASS::MEMBER, or NAMESPACE::NAME. Look for ':', but ignore |
| 1408 | inside of <>. */ |
| 1409 | |
| 1410 | p = *argptr; |
| 1411 | if (p[0] == '"') |
| 1412 | { |
| 1413 | *is_quote_enclosed = 1; |
| 1414 | (*argptr)++; |
| 1415 | p++; |
| 1416 | } |
| 1417 | else |
| 1418 | { |
| 1419 | *is_quote_enclosed = 0; |
| 1420 | if (strchr (get_gdb_completer_quote_characters (), *p)) |
| 1421 | { |
| 1422 | ++(*argptr); |
| 1423 | ++p; |
| 1424 | } |
| 1425 | } |
| 1426 | |
| 1427 | |
| 1428 | /* Check for a drive letter in the filename. This is done on all hosts |
| 1429 | to capture cross-compilation environments. On Unixen, directory |
| 1430 | separators are illegal in filenames, so if the user enters "e:/foo.c", |
| 1431 | he is referring to a directory named "e:" and a source file named |
| 1432 | "foo.c", and we still want to keep these two pieces together. */ |
| 1433 | if (isalpha (p[0]) && p[1] == ':' && IS_DIR_SEPARATOR (p[2])) |
| 1434 | p += 3; |
| 1435 | |
| 1436 | for (; *p; p++) |
| 1437 | { |
| 1438 | if (p[0] == '<') |
| 1439 | { |
| 1440 | char *temp_end = find_template_name_end (p); |
| 1441 | |
| 1442 | if (!temp_end) |
| 1443 | error (_("malformed template specification in command")); |
| 1444 | p = temp_end; |
| 1445 | } |
| 1446 | |
| 1447 | if (p[0] == '(') |
| 1448 | p = find_method_overload_end (p); |
| 1449 | |
| 1450 | /* Check for a colon and a plus or minus and a [ (which |
| 1451 | indicates an Objective-C method). */ |
| 1452 | if (is_objc_method_format (p)) |
| 1453 | { |
| 1454 | break; |
| 1455 | } |
| 1456 | /* Check for the end of the first half of the linespec. End of |
| 1457 | line, a tab, a colon or a space. But if enclosed in double |
| 1458 | quotes we do not break on enclosed spaces. */ |
| 1459 | if (!*p |
| 1460 | || p[0] == '\t' |
| 1461 | || (p[0] == ':') |
| 1462 | || ((p[0] == ' ') && !*is_quote_enclosed)) |
| 1463 | break; |
| 1464 | if (p[0] == '.' && strchr (p, ':') == NULL) |
| 1465 | { |
| 1466 | /* Java qualified method. Find the *last* '.', since the |
| 1467 | others are package qualifiers. Stop at any open parenthesis |
| 1468 | which might provide overload information. */ |
| 1469 | for (p1 = p; *p1 && *p1 != '('; p1++) |
| 1470 | { |
| 1471 | if (*p1 == '.') |
| 1472 | p = p1; |
| 1473 | } |
| 1474 | break; |
| 1475 | } |
| 1476 | } |
| 1477 | p = skip_spaces (p); |
| 1478 | |
| 1479 | /* If the closing double quote was left at the end, remove it. */ |
| 1480 | if (*is_quote_enclosed) |
| 1481 | { |
| 1482 | char *closing_quote = strchr (p - 1, '"'); |
| 1483 | |
| 1484 | if (closing_quote && closing_quote[1] == '\0') |
| 1485 | *closing_quote = '\0'; |
| 1486 | } |
| 1487 | |
| 1488 | /* Now that we've safely parsed the first half, put back ',' so |
| 1489 | outer layers can see it. */ |
| 1490 | if (has_comma) |
| 1491 | *ii = ','; |
| 1492 | |
| 1493 | return p; |
| 1494 | } |
| 1495 | |
| 1496 | \f |
| 1497 | |
| 1498 | /* Here's where we recognise an Objective-C Selector. An Objective C |
| 1499 | selector may be implemented by more than one class, therefore it |
| 1500 | may represent more than one method/function. This gives us a |
| 1501 | situation somewhat analogous to C++ overloading. If there's more |
| 1502 | than one method that could represent the selector, then use some of |
| 1503 | the existing C++ code to let the user choose one. */ |
| 1504 | |
| 1505 | static struct symtabs_and_lines |
| 1506 | decode_objc (struct linespec_state *self, char **argptr) |
| 1507 | { |
| 1508 | struct collect_info info; |
| 1509 | VEC (const_char_ptr) *symbol_names = NULL; |
| 1510 | char *new_argptr; |
| 1511 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (const_char_ptr), |
| 1512 | &symbol_names); |
| 1513 | |
| 1514 | info.state = self; |
| 1515 | info.result.sals = NULL; |
| 1516 | info.result.nelts = 0; |
| 1517 | |
| 1518 | new_argptr = find_imps (*argptr, &symbol_names); |
| 1519 | if (VEC_empty (const_char_ptr, symbol_names)) |
| 1520 | { |
| 1521 | do_cleanups (cleanup); |
| 1522 | return info.result; |
| 1523 | } |
| 1524 | |
| 1525 | add_all_symbol_names_from_pspace (&info, NULL, symbol_names); |
| 1526 | |
| 1527 | if (info.result.nelts > 0) |
| 1528 | { |
| 1529 | char *saved_arg; |
| 1530 | |
| 1531 | saved_arg = alloca (new_argptr - *argptr + 1); |
| 1532 | memcpy (saved_arg, *argptr, new_argptr - *argptr); |
| 1533 | saved_arg[new_argptr - *argptr] = '\0'; |
| 1534 | |
| 1535 | if (self->canonical) |
| 1536 | { |
| 1537 | self->canonical->pre_expanded = 1; |
| 1538 | if (self->user_filename) |
| 1539 | self->canonical->addr_string |
| 1540 | = xstrprintf ("%s:%s", self->user_filename, saved_arg); |
| 1541 | else |
| 1542 | self->canonical->addr_string = xstrdup (saved_arg); |
| 1543 | } |
| 1544 | } |
| 1545 | |
| 1546 | *argptr = new_argptr; |
| 1547 | |
| 1548 | do_cleanups (cleanup); |
| 1549 | return info.result; |
| 1550 | } |
| 1551 | |
| 1552 | /* This handles C++ and Java compound data structures. P should point |
| 1553 | at the first component separator, i.e. double-colon or period. As |
| 1554 | an example, on entrance to this function we could have ARGPTR |
| 1555 | pointing to "AAA::inA::fun" and P pointing to "::inA::fun". */ |
| 1556 | |
| 1557 | static struct symtabs_and_lines |
| 1558 | decode_compound (struct linespec_state *self, |
| 1559 | char **argptr, char *the_real_saved_arg, char *p) |
| 1560 | { |
| 1561 | struct symtabs_and_lines values; |
| 1562 | char *p2; |
| 1563 | char *saved_arg2 = *argptr; |
| 1564 | char *temp_end; |
| 1565 | struct symbol *sym; |
| 1566 | char *copy; |
| 1567 | VEC (symbolp) *sym_classes; |
| 1568 | char *saved_arg, *class_name; |
| 1569 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
| 1570 | |
| 1571 | /* If the user specified any completer quote characters in the input, |
| 1572 | strip them. They are superfluous. */ |
| 1573 | saved_arg = alloca (strlen (the_real_saved_arg) + 1); |
| 1574 | { |
| 1575 | char *dst = saved_arg; |
| 1576 | char *src = the_real_saved_arg; |
| 1577 | char *quotes = get_gdb_completer_quote_characters (); |
| 1578 | while (*src != '\0') |
| 1579 | { |
| 1580 | if (strchr (quotes, *src) == NULL) |
| 1581 | *dst++ = *src; |
| 1582 | ++src; |
| 1583 | } |
| 1584 | *dst = '\0'; |
| 1585 | } |
| 1586 | |
| 1587 | /* First check for "global" namespace specification, of the form |
| 1588 | "::foo". If found, skip over the colons and jump to normal |
| 1589 | symbol processing. I.e. the whole line specification starts with |
| 1590 | "::" (note the condition that *argptr == p). */ |
| 1591 | if (p[0] == ':' |
| 1592 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) |
| 1593 | saved_arg2 += 2; |
| 1594 | |
| 1595 | /* Given our example "AAA::inA::fun", we have two cases to consider: |
| 1596 | |
| 1597 | 1) AAA::inA is the name of a class. In that case, presumably it |
| 1598 | has a method called "fun"; we then look up that method using |
| 1599 | find_method. |
| 1600 | |
| 1601 | 2) AAA::inA isn't the name of a class. In that case, either the |
| 1602 | user made a typo, AAA::inA is the name of a namespace, or it is |
| 1603 | the name of a minimal symbol. |
| 1604 | In this case we just delegate to decode_variable. |
| 1605 | |
| 1606 | Thus, our first task is to find everything before the last set of |
| 1607 | double-colons and figure out if it's the name of a class. So we |
| 1608 | first loop through all of the double-colons. */ |
| 1609 | |
| 1610 | p2 = p; /* Save for restart. */ |
| 1611 | |
| 1612 | /* This is very messy. Following the example above we have now the |
| 1613 | following pointers: |
| 1614 | p -> "::inA::fun" |
| 1615 | argptr -> "AAA::inA::fun |
| 1616 | saved_arg -> "AAA::inA::fun |
| 1617 | saved_arg2 -> "AAA::inA::fun |
| 1618 | p2 -> "::inA::fun". */ |
| 1619 | |
| 1620 | /* In the loop below, with these strings, we'll make 2 passes, each |
| 1621 | is marked in comments. */ |
| 1622 | |
| 1623 | while (1) |
| 1624 | { |
| 1625 | static char *break_characters = " \t("; |
| 1626 | |
| 1627 | /* Move pointer up to next possible class/namespace token. */ |
| 1628 | |
| 1629 | p = p2 + 1; /* Restart with old value +1. */ |
| 1630 | |
| 1631 | /* PASS1: at this point p2->"::inA::fun", so p->":inA::fun", |
| 1632 | i.e. if there is a double-colon, p will now point to the |
| 1633 | second colon. */ |
| 1634 | /* PASS2: p2->"::fun", p->":fun" */ |
| 1635 | |
| 1636 | /* Move pointer ahead to next double-colon. */ |
| 1637 | while (*p |
| 1638 | && strchr (break_characters, *p) == NULL |
| 1639 | && strchr (get_gdb_completer_quote_characters (), *p) == NULL) |
| 1640 | { |
| 1641 | if (current_language->la_language == language_cplus) |
| 1642 | p += cp_validate_operator (p); |
| 1643 | |
| 1644 | if (p[0] == '<') |
| 1645 | { |
| 1646 | temp_end = find_template_name_end (p); |
| 1647 | if (!temp_end) |
| 1648 | error (_("malformed template specification in command")); |
| 1649 | p = temp_end; |
| 1650 | } |
| 1651 | /* Note that, since, at the start of this loop, p would be |
| 1652 | pointing to the second colon in a double-colon, we only |
| 1653 | satisfy the condition below if there is another |
| 1654 | double-colon to the right (after). I.e. there is another |
| 1655 | component that can be a class or a namespace. I.e, if at |
| 1656 | the beginning of this loop (PASS1), we had |
| 1657 | p->":inA::fun", we'll trigger this when p has been |
| 1658 | advanced to point to "::fun". */ |
| 1659 | /* PASS2: we will not trigger this. */ |
| 1660 | else if ((p[0] == ':') && (p[1] == ':')) |
| 1661 | break; /* Found double-colon. */ |
| 1662 | else |
| 1663 | { |
| 1664 | /* PASS2: We'll keep getting here, until P points to one of the |
| 1665 | break characters, at which point we exit this loop. */ |
| 1666 | if (*p) |
| 1667 | { |
| 1668 | if (p[1] == '(' |
| 1669 | && strncmp (&p[1], CP_ANONYMOUS_NAMESPACE_STR, |
| 1670 | CP_ANONYMOUS_NAMESPACE_LEN) == 0) |
| 1671 | p += CP_ANONYMOUS_NAMESPACE_LEN; |
| 1672 | else if (strchr (break_characters, *p) == NULL) |
| 1673 | ++p; |
| 1674 | } |
| 1675 | } |
| 1676 | } |
| 1677 | |
| 1678 | if (*p != ':') |
| 1679 | break; /* Out of the while (1). This would happen |
| 1680 | for instance if we have looked up |
| 1681 | unsuccessfully all the components of the |
| 1682 | string, and p->""(PASS2). */ |
| 1683 | |
| 1684 | /* We get here if p points to one of the break characters or "" (i.e., |
| 1685 | string ended). */ |
| 1686 | /* Save restart for next time around. */ |
| 1687 | p2 = p; |
| 1688 | /* Restore argptr as it was on entry to this function. */ |
| 1689 | *argptr = saved_arg2; |
| 1690 | /* PASS1: at this point p->"::fun" argptr->"AAA::inA::fun", |
| 1691 | p2->"::fun". */ |
| 1692 | |
| 1693 | /* All ready for next pass through the loop. */ |
| 1694 | } /* while (1) */ |
| 1695 | |
| 1696 | |
| 1697 | /* Start of lookup in the symbol tables. */ |
| 1698 | |
| 1699 | /* Lookup in the symbol table the substring between argptr and |
| 1700 | p. Note, this call changes the value of argptr. */ |
| 1701 | /* Before the call, argptr->"AAA::inA::fun", |
| 1702 | p->"", p2->"::fun". After the call: argptr->"fun", p, p2 |
| 1703 | unchanged. */ |
| 1704 | sym_classes = lookup_prefix_sym (argptr, p2, self->file_symtabs, |
| 1705 | &class_name); |
| 1706 | make_cleanup (VEC_cleanup (symbolp), &sym_classes); |
| 1707 | make_cleanup (xfree, class_name); |
| 1708 | |
| 1709 | /* If a class has been found, then we're in case 1 above. So we |
| 1710 | look up "fun" as a method of those classes. */ |
| 1711 | if (!VEC_empty (symbolp, sym_classes)) |
| 1712 | { |
| 1713 | /* Arg token is not digits => try it as a function name. |
| 1714 | Find the next token (everything up to end or next |
| 1715 | blank). */ |
| 1716 | if (**argptr |
| 1717 | && strchr (get_gdb_completer_quote_characters (), |
| 1718 | **argptr) != NULL) |
| 1719 | { |
| 1720 | p = skip_quoted (*argptr); |
| 1721 | *argptr = *argptr + 1; |
| 1722 | } |
| 1723 | else |
| 1724 | { |
| 1725 | /* At this point argptr->"fun". */ |
| 1726 | char *a; |
| 1727 | |
| 1728 | p = *argptr; |
| 1729 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':' |
| 1730 | && *p != '(') |
| 1731 | p++; |
| 1732 | /* At this point p->"". String ended. */ |
| 1733 | /* Nope, C++ operators could have spaces in them |
| 1734 | ("foo::operator <" or "foo::operator delete []"). |
| 1735 | I apologize, this is a bit hacky... */ |
| 1736 | if (current_language->la_language == language_cplus |
| 1737 | && *p == ' ' && p - 8 - *argptr + 1 > 0) |
| 1738 | { |
| 1739 | /* The above loop has already swallowed "operator". */ |
| 1740 | p += cp_validate_operator (p - 8) - 8; |
| 1741 | } |
| 1742 | |
| 1743 | /* Keep any important naming information. */ |
| 1744 | p = keep_name_info (p, 1); |
| 1745 | } |
| 1746 | |
| 1747 | /* Allocate our own copy of the substring between argptr and |
| 1748 | p. */ |
| 1749 | copy = (char *) alloca (p - *argptr + 1); |
| 1750 | memcpy (copy, *argptr, p - *argptr); |
| 1751 | copy[p - *argptr] = '\0'; |
| 1752 | if (p != *argptr |
| 1753 | && copy[p - *argptr - 1] |
| 1754 | && strchr (get_gdb_completer_quote_characters (), |
| 1755 | copy[p - *argptr - 1]) != NULL) |
| 1756 | copy[p - *argptr - 1] = '\0'; |
| 1757 | |
| 1758 | /* At this point copy->"fun", p->"". */ |
| 1759 | |
| 1760 | /* No line number may be specified. */ |
| 1761 | *argptr = skip_spaces (p); |
| 1762 | /* At this point arptr->"". */ |
| 1763 | |
| 1764 | /* Look for copy as a method of sym_class. */ |
| 1765 | /* At this point copy->"fun", sym_class is "AAA:inA", |
| 1766 | saved_arg->"AAA::inA::fun". This concludes the scanning of |
| 1767 | the string for possible components matches. If we find it |
| 1768 | here, we return. If not, and we are at the and of the string, |
| 1769 | we'll lookup the whole string in the symbol tables. */ |
| 1770 | |
| 1771 | values = find_method (self, saved_arg, copy, class_name, sym_classes); |
| 1772 | |
| 1773 | do_cleanups (cleanup); |
| 1774 | return values; |
| 1775 | } /* End if symbol found. */ |
| 1776 | |
| 1777 | |
| 1778 | /* We couldn't find a class, so we're in case 2 above. We check the |
| 1779 | entire name as a symbol instead. The simplest way to do this is |
| 1780 | to just throw an exception and let our caller fall through to |
| 1781 | decode_variable. */ |
| 1782 | |
| 1783 | throw_error (NOT_FOUND_ERROR, _("see caller, this text doesn't matter")); |
| 1784 | } |
| 1785 | |
| 1786 | /* An instance of this type is used when collecting prefix symbols for |
| 1787 | decode_compound. */ |
| 1788 | |
| 1789 | struct decode_compound_collector |
| 1790 | { |
| 1791 | /* The result vector. */ |
| 1792 | VEC (symbolp) *symbols; |
| 1793 | |
| 1794 | /* A hash table of all symbols we found. We use this to avoid |
| 1795 | adding any symbol more than once. */ |
| 1796 | htab_t unique_syms; |
| 1797 | }; |
| 1798 | |
| 1799 | /* A callback for iterate_over_symbols that is used by |
| 1800 | lookup_prefix_sym to collect type symbols. */ |
| 1801 | |
| 1802 | static int |
| 1803 | collect_one_symbol (struct symbol *sym, void *d) |
| 1804 | { |
| 1805 | struct decode_compound_collector *collector = d; |
| 1806 | void **slot; |
| 1807 | struct type *t; |
| 1808 | |
| 1809 | if (SYMBOL_CLASS (sym) != LOC_TYPEDEF) |
| 1810 | return 1; /* Continue iterating. */ |
| 1811 | |
| 1812 | t = SYMBOL_TYPE (sym); |
| 1813 | CHECK_TYPEDEF (t); |
| 1814 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
| 1815 | && TYPE_CODE (t) != TYPE_CODE_UNION |
| 1816 | && TYPE_CODE (t) != TYPE_CODE_NAMESPACE) |
| 1817 | return 1; /* Continue iterating. */ |
| 1818 | |
| 1819 | slot = htab_find_slot (collector->unique_syms, sym, INSERT); |
| 1820 | if (!*slot) |
| 1821 | { |
| 1822 | *slot = sym; |
| 1823 | VEC_safe_push (symbolp, collector->symbols, sym); |
| 1824 | } |
| 1825 | |
| 1826 | return 1; /* Continue iterating. */ |
| 1827 | } |
| 1828 | |
| 1829 | /* Return the symbol corresponding to the substring of *ARGPTR ending |
| 1830 | at P, allowing whitespace. Also, advance *ARGPTR past the symbol |
| 1831 | name in question, the compound object separator ("::" or "."), and |
| 1832 | whitespace. Note that *ARGPTR is changed whether or not the |
| 1833 | this call finds anything (i.e we return NULL). As an |
| 1834 | example, say ARGPTR is "AAA::inA::fun" and P is "::inA::fun". */ |
| 1835 | |
| 1836 | static VEC (symbolp) * |
| 1837 | lookup_prefix_sym (char **argptr, char *p, VEC (symtab_p) *file_symtabs, |
| 1838 | char **class_name) |
| 1839 | { |
| 1840 | char *p1; |
| 1841 | char *copy; |
| 1842 | int ix; |
| 1843 | struct symtab *elt; |
| 1844 | struct decode_compound_collector collector; |
| 1845 | struct cleanup *outer; |
| 1846 | struct cleanup *cleanup; |
| 1847 | struct block *search_block; |
| 1848 | |
| 1849 | /* Extract the class name. */ |
| 1850 | p1 = p; |
| 1851 | while (p != *argptr && p[-1] == ' ') |
| 1852 | --p; |
| 1853 | copy = (char *) xmalloc (p - *argptr + 1); |
| 1854 | memcpy (copy, *argptr, p - *argptr); |
| 1855 | copy[p - *argptr] = 0; |
| 1856 | *class_name = copy; |
| 1857 | outer = make_cleanup (xfree, copy); |
| 1858 | |
| 1859 | /* Discard the class name from the argptr. */ |
| 1860 | p = p1 + (p1[0] == ':' ? 2 : 1); |
| 1861 | p = skip_spaces (p); |
| 1862 | *argptr = p; |
| 1863 | |
| 1864 | /* At this point p1->"::inA::fun", p->"inA::fun" copy->"AAA", |
| 1865 | argptr->"inA::fun". */ |
| 1866 | |
| 1867 | collector.symbols = NULL; |
| 1868 | make_cleanup (VEC_cleanup (symbolp), &collector.symbols); |
| 1869 | |
| 1870 | collector.unique_syms = htab_create_alloc (1, htab_hash_pointer, |
| 1871 | htab_eq_pointer, NULL, |
| 1872 | xcalloc, xfree); |
| 1873 | cleanup = make_cleanup_htab_delete (collector.unique_syms); |
| 1874 | |
| 1875 | for (ix = 0; VEC_iterate (symtab_p, file_symtabs, ix, elt); ++ix) |
| 1876 | { |
| 1877 | if (elt == NULL) |
| 1878 | { |
| 1879 | iterate_over_all_matching_symtabs (copy, STRUCT_DOMAIN, |
| 1880 | collect_one_symbol, &collector, |
| 1881 | NULL); |
| 1882 | iterate_over_all_matching_symtabs (copy, VAR_DOMAIN, |
| 1883 | collect_one_symbol, &collector, |
| 1884 | NULL); |
| 1885 | } |
| 1886 | else |
| 1887 | { |
| 1888 | struct block *search_block; |
| 1889 | |
| 1890 | /* Program spaces that are executing startup should have |
| 1891 | been filtered out earlier. */ |
| 1892 | gdb_assert (!SYMTAB_PSPACE (elt)->executing_startup); |
| 1893 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 1894 | search_block = get_search_block (elt); |
| 1895 | LA_ITERATE_OVER_SYMBOLS (search_block, copy, STRUCT_DOMAIN, |
| 1896 | collect_one_symbol, &collector); |
| 1897 | LA_ITERATE_OVER_SYMBOLS (search_block, copy, VAR_DOMAIN, |
| 1898 | collect_one_symbol, &collector); |
| 1899 | } |
| 1900 | } |
| 1901 | |
| 1902 | do_cleanups (cleanup); |
| 1903 | discard_cleanups (outer); |
| 1904 | return collector.symbols; |
| 1905 | } |
| 1906 | |
| 1907 | /* A qsort comparison function for symbols. The resulting order does |
| 1908 | not actually matter; we just need to be able to sort them so that |
| 1909 | symbols with the same program space end up next to each other. */ |
| 1910 | |
| 1911 | static int |
| 1912 | compare_symbols (const void *a, const void *b) |
| 1913 | { |
| 1914 | struct symbol * const *sa = a; |
| 1915 | struct symbol * const *sb = b; |
| 1916 | uintptr_t uia, uib; |
| 1917 | |
| 1918 | uia = (uintptr_t) SYMTAB_PSPACE (SYMBOL_SYMTAB (*sa)); |
| 1919 | uib = (uintptr_t) SYMTAB_PSPACE (SYMBOL_SYMTAB (*sb)); |
| 1920 | |
| 1921 | if (uia < uib) |
| 1922 | return -1; |
| 1923 | if (uia > uib) |
| 1924 | return 1; |
| 1925 | |
| 1926 | uia = (uintptr_t) *sa; |
| 1927 | uib = (uintptr_t) *sb; |
| 1928 | |
| 1929 | if (uia < uib) |
| 1930 | return -1; |
| 1931 | if (uia > uib) |
| 1932 | return 1; |
| 1933 | |
| 1934 | return 0; |
| 1935 | } |
| 1936 | |
| 1937 | /* Look for all the matching instances of each symbol in NAMES. Only |
| 1938 | instances from PSPACE are considered; other program spaces are |
| 1939 | handled by our caller. If PSPACE is NULL, then all program spaces |
| 1940 | are considered. Results are stored into INFO. */ |
| 1941 | |
| 1942 | static void |
| 1943 | add_all_symbol_names_from_pspace (struct collect_info *info, |
| 1944 | struct program_space *pspace, |
| 1945 | VEC (const_char_ptr) *names) |
| 1946 | { |
| 1947 | int ix; |
| 1948 | const char *iter; |
| 1949 | |
| 1950 | for (ix = 0; VEC_iterate (const_char_ptr, names, ix, iter); ++ix) |
| 1951 | add_matching_symbols_to_info (iter, info, pspace); |
| 1952 | } |
| 1953 | |
| 1954 | static void |
| 1955 | find_superclass_methods (VEC (typep) *superclasses, |
| 1956 | const char *name, |
| 1957 | VEC (const_char_ptr) **result_names) |
| 1958 | { |
| 1959 | int old_len = VEC_length (const_char_ptr, *result_names); |
| 1960 | VEC (typep) *iter_classes; |
| 1961 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
| 1962 | |
| 1963 | iter_classes = superclasses; |
| 1964 | while (1) |
| 1965 | { |
| 1966 | VEC (typep) *new_supers = NULL; |
| 1967 | int ix; |
| 1968 | struct type *t; |
| 1969 | |
| 1970 | make_cleanup (VEC_cleanup (typep), &new_supers); |
| 1971 | for (ix = 0; VEC_iterate (typep, iter_classes, ix, t); ++ix) |
| 1972 | find_methods (t, name, result_names, &new_supers); |
| 1973 | |
| 1974 | if (VEC_length (const_char_ptr, *result_names) != old_len |
| 1975 | || VEC_empty (typep, new_supers)) |
| 1976 | break; |
| 1977 | |
| 1978 | iter_classes = new_supers; |
| 1979 | } |
| 1980 | |
| 1981 | do_cleanups (cleanup); |
| 1982 | } |
| 1983 | |
| 1984 | /* This finds the method COPY in the class whose type is given by one |
| 1985 | of the symbols in SYM_CLASSES. */ |
| 1986 | |
| 1987 | static struct symtabs_and_lines |
| 1988 | find_method (struct linespec_state *self, char *saved_arg, |
| 1989 | char *copy, const char *class_name, VEC (symbolp) *sym_classes) |
| 1990 | { |
| 1991 | char *canon; |
| 1992 | struct symbol *sym; |
| 1993 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
| 1994 | int ix; |
| 1995 | int last_result_len; |
| 1996 | VEC (typep) *superclass_vec; |
| 1997 | VEC (const_char_ptr) *result_names; |
| 1998 | struct collect_info info; |
| 1999 | char *name_iter; |
| 2000 | |
| 2001 | /* NAME is typed by the user: it needs to be canonicalized before |
| 2002 | searching the symbol tables. */ |
| 2003 | canon = cp_canonicalize_string_no_typedefs (copy); |
| 2004 | if (canon != NULL) |
| 2005 | { |
| 2006 | copy = canon; |
| 2007 | make_cleanup (xfree, copy); |
| 2008 | } |
| 2009 | |
| 2010 | /* Sort symbols so that symbols with the same program space are next |
| 2011 | to each other. */ |
| 2012 | qsort (VEC_address (symbolp, sym_classes), |
| 2013 | VEC_length (symbolp, sym_classes), |
| 2014 | sizeof (symbolp), |
| 2015 | compare_symbols); |
| 2016 | |
| 2017 | info.state = self; |
| 2018 | info.result.sals = NULL; |
| 2019 | info.result.nelts = 0; |
| 2020 | |
| 2021 | /* Iterate over all the types, looking for the names of existing |
| 2022 | methods matching COPY. If we cannot find a direct method in a |
| 2023 | given program space, then we consider inherited methods; this is |
| 2024 | not ideal (ideal would be to respect C++ hiding rules), but it |
| 2025 | seems good enough and is what GDB has historically done. We only |
| 2026 | need to collect the names because later we find all symbols with |
| 2027 | those names. This loop is written in a somewhat funny way |
| 2028 | because we collect data across the program space before deciding |
| 2029 | what to do. */ |
| 2030 | superclass_vec = NULL; |
| 2031 | make_cleanup (VEC_cleanup (typep), &superclass_vec); |
| 2032 | result_names = NULL; |
| 2033 | make_cleanup (VEC_cleanup (const_char_ptr), &result_names); |
| 2034 | last_result_len = 0; |
| 2035 | for (ix = 0; VEC_iterate (symbolp, sym_classes, ix, sym); ++ix) |
| 2036 | { |
| 2037 | struct type *t; |
| 2038 | struct program_space *pspace; |
| 2039 | |
| 2040 | /* Program spaces that are executing startup should have |
| 2041 | been filtered out earlier. */ |
| 2042 | gdb_assert (!SYMTAB_PSPACE (SYMBOL_SYMTAB (sym))->executing_startup); |
| 2043 | pspace = SYMTAB_PSPACE (SYMBOL_SYMTAB (sym)); |
| 2044 | set_current_program_space (pspace); |
| 2045 | t = check_typedef (SYMBOL_TYPE (sym)); |
| 2046 | find_methods (t, copy, &result_names, &superclass_vec); |
| 2047 | |
| 2048 | /* Handle all items from a single program space at once; and be |
| 2049 | sure not to miss the last batch. */ |
| 2050 | if (ix == VEC_length (symbolp, sym_classes) - 1 |
| 2051 | || (pspace |
| 2052 | != SYMTAB_PSPACE (SYMBOL_SYMTAB (VEC_index (symbolp, sym_classes, |
| 2053 | ix + 1))))) |
| 2054 | { |
| 2055 | /* If we did not find a direct implementation anywhere in |
| 2056 | this program space, consider superclasses. */ |
| 2057 | if (VEC_length (const_char_ptr, result_names) == last_result_len) |
| 2058 | find_superclass_methods (superclass_vec, copy, &result_names); |
| 2059 | |
| 2060 | /* We have a list of candidate symbol names, so now we |
| 2061 | iterate over the symbol tables looking for all |
| 2062 | matches in this pspace. */ |
| 2063 | add_all_symbol_names_from_pspace (&info, pspace, result_names); |
| 2064 | |
| 2065 | VEC_truncate (typep, superclass_vec, 0); |
| 2066 | last_result_len = VEC_length (const_char_ptr, result_names); |
| 2067 | } |
| 2068 | } |
| 2069 | |
| 2070 | if (info.result.nelts > 0) |
| 2071 | { |
| 2072 | if (self->canonical) |
| 2073 | { |
| 2074 | self->canonical->pre_expanded = 1; |
| 2075 | if (self->user_filename) |
| 2076 | self->canonical->addr_string |
| 2077 | = xstrprintf ("%s:%s", self->user_filename, saved_arg); |
| 2078 | else |
| 2079 | self->canonical->addr_string = xstrdup (saved_arg); |
| 2080 | } |
| 2081 | |
| 2082 | do_cleanups (cleanup); |
| 2083 | |
| 2084 | return info.result; |
| 2085 | } |
| 2086 | |
| 2087 | if (copy[0] == '~') |
| 2088 | cplusplus_error (saved_arg, |
| 2089 | "the class `%s' does not have destructor defined\n", |
| 2090 | class_name); |
| 2091 | else |
| 2092 | cplusplus_error (saved_arg, |
| 2093 | "the class %s does not have any method named %s\n", |
| 2094 | class_name, copy); |
| 2095 | } |
| 2096 | |
| 2097 | \f |
| 2098 | |
| 2099 | /* This object is used when collecting all matching symtabs. */ |
| 2100 | |
| 2101 | struct symtab_collector |
| 2102 | { |
| 2103 | /* The result vector of symtabs. */ |
| 2104 | VEC (symtab_p) *symtabs; |
| 2105 | |
| 2106 | /* This is used to ensure the symtabs are unique. */ |
| 2107 | htab_t symtab_table; |
| 2108 | }; |
| 2109 | |
| 2110 | /* Callback for iterate_over_symtabs. */ |
| 2111 | |
| 2112 | static int |
| 2113 | add_symtabs_to_list (struct symtab *symtab, void *d) |
| 2114 | { |
| 2115 | struct symtab_collector *data = d; |
| 2116 | void **slot; |
| 2117 | |
| 2118 | slot = htab_find_slot (data->symtab_table, symtab, INSERT); |
| 2119 | if (!*slot) |
| 2120 | { |
| 2121 | *slot = symtab; |
| 2122 | VEC_safe_push (symtab_p, data->symtabs, symtab); |
| 2123 | } |
| 2124 | |
| 2125 | return 0; |
| 2126 | } |
| 2127 | |
| 2128 | /* Given a file name, return a VEC of all matching symtabs. */ |
| 2129 | |
| 2130 | static VEC (symtab_p) * |
| 2131 | collect_symtabs_from_filename (const char *file) |
| 2132 | { |
| 2133 | struct symtab_collector collector; |
| 2134 | struct cleanup *cleanups; |
| 2135 | struct program_space *pspace; |
| 2136 | |
| 2137 | collector.symtabs = NULL; |
| 2138 | collector.symtab_table = htab_create (1, htab_hash_pointer, htab_eq_pointer, |
| 2139 | NULL); |
| 2140 | cleanups = make_cleanup_htab_delete (collector.symtab_table); |
| 2141 | |
| 2142 | /* Find that file's data. */ |
| 2143 | ALL_PSPACES (pspace) |
| 2144 | { |
| 2145 | if (pspace->executing_startup) |
| 2146 | continue; |
| 2147 | |
| 2148 | set_current_program_space (pspace); |
| 2149 | iterate_over_symtabs (file, add_symtabs_to_list, &collector); |
| 2150 | } |
| 2151 | |
| 2152 | do_cleanups (cleanups); |
| 2153 | return collector.symtabs; |
| 2154 | } |
| 2155 | |
| 2156 | /* Return all the symtabs associated to the filename given by the |
| 2157 | substring of *ARGPTR ending at P, and advance ARGPTR past that |
| 2158 | filename. */ |
| 2159 | |
| 2160 | static VEC (symtab_p) * |
| 2161 | symtabs_from_filename (char **argptr, char *p, int is_quote_enclosed, |
| 2162 | char **user_filename) |
| 2163 | { |
| 2164 | char *p1; |
| 2165 | char *copy; |
| 2166 | struct cleanup *outer; |
| 2167 | VEC (symtab_p) *result; |
| 2168 | |
| 2169 | p1 = p; |
| 2170 | while (p != *argptr && p[-1] == ' ') |
| 2171 | --p; |
| 2172 | if ((*p == '"') && is_quote_enclosed) |
| 2173 | --p; |
| 2174 | copy = xmalloc (p - *argptr + 1); |
| 2175 | outer = make_cleanup (xfree, copy); |
| 2176 | memcpy (copy, *argptr, p - *argptr); |
| 2177 | /* It may have the ending quote right after the file name. */ |
| 2178 | if ((is_quote_enclosed && copy[p - *argptr - 1] == '"') |
| 2179 | || copy[p - *argptr - 1] == '\'') |
| 2180 | copy[p - *argptr - 1] = 0; |
| 2181 | else |
| 2182 | copy[p - *argptr] = 0; |
| 2183 | |
| 2184 | result = collect_symtabs_from_filename (copy); |
| 2185 | |
| 2186 | if (VEC_empty (symtab_p, result)) |
| 2187 | { |
| 2188 | if (!have_full_symbols () && !have_partial_symbols ()) |
| 2189 | throw_error (NOT_FOUND_ERROR, |
| 2190 | _("No symbol table is loaded. " |
| 2191 | "Use the \"file\" command.")); |
| 2192 | throw_error (NOT_FOUND_ERROR, _("No source file named %s."), copy); |
| 2193 | } |
| 2194 | |
| 2195 | /* Discard the file name from the arg. */ |
| 2196 | if (*p1 == '\0') |
| 2197 | *argptr = p1; |
| 2198 | else |
| 2199 | *argptr = skip_spaces (p1 + 1); |
| 2200 | |
| 2201 | discard_cleanups (outer); |
| 2202 | *user_filename = copy; |
| 2203 | return result; |
| 2204 | } |
| 2205 | |
| 2206 | /* A callback used by iterate_over_all_matching_symtabs that collects |
| 2207 | symbols for find_function_symbols. */ |
| 2208 | |
| 2209 | static int |
| 2210 | collect_function_symbols (struct symbol *sym, void *arg) |
| 2211 | { |
| 2212 | VEC (symbolp) **syms = arg; |
| 2213 | |
| 2214 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
| 2215 | VEC_safe_push (symbolp, *syms, sym); |
| 2216 | |
| 2217 | return 1; /* Continue iterating. */ |
| 2218 | } |
| 2219 | |
| 2220 | /* Look up a function symbol in *ARGPTR. If found, advance *ARGPTR |
| 2221 | and return the symbol. If not found, return NULL. */ |
| 2222 | |
| 2223 | static VEC (symbolp) * |
| 2224 | find_function_symbols (char **argptr, char *p, int is_quote_enclosed, |
| 2225 | char **user_function) |
| 2226 | { |
| 2227 | char *p1; |
| 2228 | char *copy; |
| 2229 | VEC (symbolp) *result = NULL; |
| 2230 | |
| 2231 | p1 = p; |
| 2232 | while (p != *argptr && p[-1] == ' ') |
| 2233 | --p; |
| 2234 | if ((*p == '"') && is_quote_enclosed) |
| 2235 | --p; |
| 2236 | copy = (char *) xmalloc (p - *argptr + 1); |
| 2237 | *user_function = copy; |
| 2238 | memcpy (copy, *argptr, p - *argptr); |
| 2239 | /* It may have the ending quote right after the file name. */ |
| 2240 | if ((is_quote_enclosed && copy[p - *argptr - 1] == '"') |
| 2241 | || copy[p - *argptr - 1] == '\'') |
| 2242 | copy[p - *argptr - 1] = 0; |
| 2243 | else |
| 2244 | copy[p - *argptr] = 0; |
| 2245 | |
| 2246 | iterate_over_all_matching_symtabs (copy, VAR_DOMAIN, |
| 2247 | collect_function_symbols, &result, NULL); |
| 2248 | |
| 2249 | if (VEC_empty (symbolp, result)) |
| 2250 | VEC_free (symbolp, result); |
| 2251 | else |
| 2252 | { |
| 2253 | /* Discard the file name from the arg. */ |
| 2254 | *argptr = skip_spaces (p1 + 1); |
| 2255 | } |
| 2256 | |
| 2257 | return result; |
| 2258 | } |
| 2259 | |
| 2260 | \f |
| 2261 | |
| 2262 | /* A helper for decode_all_digits that handles the 'list_mode' case. */ |
| 2263 | |
| 2264 | static void |
| 2265 | decode_digits_list_mode (struct linespec_state *self, |
| 2266 | struct symtabs_and_lines *values, |
| 2267 | struct symtab_and_line val) |
| 2268 | { |
| 2269 | int ix; |
| 2270 | struct symtab *elt; |
| 2271 | |
| 2272 | gdb_assert (self->list_mode); |
| 2273 | |
| 2274 | for (ix = 0; VEC_iterate (symtab_p, self->file_symtabs, ix, elt); ++ix) |
| 2275 | { |
| 2276 | /* The logic above should ensure this. */ |
| 2277 | gdb_assert (elt != NULL); |
| 2278 | |
| 2279 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 2280 | |
| 2281 | /* Simplistic search just for the list command. */ |
| 2282 | val.symtab = find_line_symtab (elt, val.line, NULL, NULL); |
| 2283 | if (val.symtab == NULL) |
| 2284 | val.symtab = elt; |
| 2285 | val.pspace = SYMTAB_PSPACE (elt); |
| 2286 | val.pc = 0; |
| 2287 | val.explicit_line = 1; |
| 2288 | |
| 2289 | add_sal_to_sals (self, values, &val, NULL); |
| 2290 | } |
| 2291 | } |
| 2292 | |
| 2293 | /* A helper for decode_all_digits that iterates over the symtabs, |
| 2294 | adding lines to the VEC. */ |
| 2295 | |
| 2296 | static void |
| 2297 | decode_digits_ordinary (struct linespec_state *self, |
| 2298 | int line, |
| 2299 | struct symtabs_and_lines *sals, |
| 2300 | struct linetable_entry **best_entry) |
| 2301 | { |
| 2302 | int ix; |
| 2303 | struct symtab *elt; |
| 2304 | |
| 2305 | for (ix = 0; VEC_iterate (symtab_p, self->file_symtabs, ix, elt); ++ix) |
| 2306 | { |
| 2307 | int i; |
| 2308 | VEC (CORE_ADDR) *pcs; |
| 2309 | CORE_ADDR pc; |
| 2310 | |
| 2311 | /* The logic above should ensure this. */ |
| 2312 | gdb_assert (elt != NULL); |
| 2313 | |
| 2314 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 2315 | |
| 2316 | pcs = find_pcs_for_symtab_line (elt, line, best_entry); |
| 2317 | for (i = 0; VEC_iterate (CORE_ADDR, pcs, i, pc); ++i) |
| 2318 | { |
| 2319 | struct symtab_and_line sal; |
| 2320 | |
| 2321 | init_sal (&sal); |
| 2322 | sal.pspace = SYMTAB_PSPACE (elt); |
| 2323 | sal.symtab = elt; |
| 2324 | sal.line = line; |
| 2325 | sal.pc = pc; |
| 2326 | add_sal_to_sals_basic (sals, &sal); |
| 2327 | } |
| 2328 | |
| 2329 | VEC_free (CORE_ADDR, pcs); |
| 2330 | } |
| 2331 | } |
| 2332 | |
| 2333 | /* This decodes a line where the argument is all digits (possibly |
| 2334 | preceded by a sign). Q should point to the end of those digits; |
| 2335 | the other arguments are as usual. */ |
| 2336 | |
| 2337 | static struct symtabs_and_lines |
| 2338 | decode_all_digits (struct linespec_state *self, |
| 2339 | char **argptr, |
| 2340 | char *q) |
| 2341 | { |
| 2342 | struct symtabs_and_lines values; |
| 2343 | struct symtab_and_line val; |
| 2344 | int use_default = 0; |
| 2345 | char *saved_arg = *argptr; |
| 2346 | |
| 2347 | enum sign |
| 2348 | { |
| 2349 | none, plus, minus |
| 2350 | } |
| 2351 | sign = none; |
| 2352 | |
| 2353 | init_sal (&val); |
| 2354 | values.sals = NULL; |
| 2355 | values.nelts = 0; |
| 2356 | |
| 2357 | /* This is where we need to make sure that we have good defaults. |
| 2358 | We must guarantee that this section of code is never executed |
| 2359 | when we are called with just a function name, since |
| 2360 | set_default_source_symtab_and_line uses |
| 2361 | select_source_symtab that calls us with such an argument. */ |
| 2362 | |
| 2363 | if (VEC_length (symtab_p, self->file_symtabs) == 1 |
| 2364 | && VEC_index (symtab_p, self->file_symtabs, 0) == NULL) |
| 2365 | { |
| 2366 | set_current_program_space (self->program_space); |
| 2367 | |
| 2368 | /* Make sure we have at least a default source file. */ |
| 2369 | set_default_source_symtab_and_line (); |
| 2370 | initialize_defaults (&self->default_symtab, &self->default_line); |
| 2371 | VEC_pop (symtab_p, self->file_symtabs); |
| 2372 | VEC_free (symtab_p, self->file_symtabs); |
| 2373 | self->file_symtabs |
| 2374 | = collect_symtabs_from_filename (self->default_symtab->filename); |
| 2375 | use_default = 1; |
| 2376 | } |
| 2377 | |
| 2378 | if (**argptr == '+') |
| 2379 | sign = plus, (*argptr)++; |
| 2380 | else if (**argptr == '-') |
| 2381 | sign = minus, (*argptr)++; |
| 2382 | val.line = atoi (*argptr); |
| 2383 | switch (sign) |
| 2384 | { |
| 2385 | case plus: |
| 2386 | if (q == *argptr) |
| 2387 | val.line = 5; |
| 2388 | if (use_default) |
| 2389 | val.line = self->default_line + val.line; |
| 2390 | break; |
| 2391 | case minus: |
| 2392 | if (q == *argptr) |
| 2393 | val.line = 15; |
| 2394 | if (use_default) |
| 2395 | val.line = self->default_line - val.line; |
| 2396 | else |
| 2397 | val.line = 1; |
| 2398 | break; |
| 2399 | case none: |
| 2400 | break; /* No need to adjust val.line. */ |
| 2401 | } |
| 2402 | |
| 2403 | *argptr = skip_spaces (q); |
| 2404 | |
| 2405 | if (self->list_mode) |
| 2406 | decode_digits_list_mode (self, &values, val); |
| 2407 | else |
| 2408 | { |
| 2409 | struct linetable_entry *best_entry = NULL; |
| 2410 | int *filter; |
| 2411 | struct block **blocks; |
| 2412 | struct cleanup *cleanup; |
| 2413 | struct symtabs_and_lines intermediate_results; |
| 2414 | int i, j; |
| 2415 | |
| 2416 | intermediate_results.sals = NULL; |
| 2417 | intermediate_results.nelts = 0; |
| 2418 | |
| 2419 | decode_digits_ordinary (self, val.line, &intermediate_results, |
| 2420 | &best_entry); |
| 2421 | if (intermediate_results.nelts == 0 && best_entry != NULL) |
| 2422 | decode_digits_ordinary (self, best_entry->line, &intermediate_results, |
| 2423 | &best_entry); |
| 2424 | |
| 2425 | cleanup = make_cleanup (xfree, intermediate_results.sals); |
| 2426 | |
| 2427 | /* For optimized code, compiler can scatter one source line |
| 2428 | accross disjoint ranges of PC values, even when no duplicate |
| 2429 | functions or inline functions are involved. For example, |
| 2430 | 'for (;;)' inside non-template non-inline non-ctor-or-dtor |
| 2431 | function can result in two PC ranges. In this case, we don't |
| 2432 | want to set breakpoint on first PC of each range. To filter |
| 2433 | such cases, we use containing blocks -- for each PC found |
| 2434 | above we see if there are other PCs that are in the same |
| 2435 | block. If yes, the other PCs are filtered out. */ |
| 2436 | |
| 2437 | filter = xmalloc (intermediate_results.nelts * sizeof (int)); |
| 2438 | make_cleanup (xfree, filter); |
| 2439 | blocks = xmalloc (intermediate_results.nelts * sizeof (struct block *)); |
| 2440 | make_cleanup (xfree, blocks); |
| 2441 | |
| 2442 | for (i = 0; i < intermediate_results.nelts; ++i) |
| 2443 | { |
| 2444 | set_current_program_space (intermediate_results.sals[i].pspace); |
| 2445 | |
| 2446 | filter[i] = 1; |
| 2447 | blocks[i] = block_for_pc_sect (intermediate_results.sals[i].pc, |
| 2448 | intermediate_results.sals[i].section); |
| 2449 | } |
| 2450 | |
| 2451 | for (i = 0; i < intermediate_results.nelts; ++i) |
| 2452 | { |
| 2453 | if (blocks[i] != NULL) |
| 2454 | for (j = i + 1; j < intermediate_results.nelts; ++j) |
| 2455 | { |
| 2456 | if (blocks[j] == blocks[i]) |
| 2457 | { |
| 2458 | filter[j] = 0; |
| 2459 | break; |
| 2460 | } |
| 2461 | } |
| 2462 | } |
| 2463 | |
| 2464 | for (i = 0; i < intermediate_results.nelts; ++i) |
| 2465 | if (filter[i]) |
| 2466 | { |
| 2467 | struct symbol *sym = (blocks[i] |
| 2468 | ? block_containing_function (blocks[i]) |
| 2469 | : NULL); |
| 2470 | |
| 2471 | if (self->funfirstline) |
| 2472 | skip_prologue_sal (&intermediate_results.sals[i]); |
| 2473 | /* Make sure the line matches the request, not what was |
| 2474 | found. */ |
| 2475 | intermediate_results.sals[i].line = val.line; |
| 2476 | add_sal_to_sals (self, &values, &intermediate_results.sals[i], |
| 2477 | sym ? SYMBOL_NATURAL_NAME (sym) : NULL); |
| 2478 | } |
| 2479 | |
| 2480 | do_cleanups (cleanup); |
| 2481 | } |
| 2482 | |
| 2483 | if (values.nelts == 0) |
| 2484 | { |
| 2485 | if (self->user_filename) |
| 2486 | throw_error (NOT_FOUND_ERROR, _("No line %d in file \"%s\"."), |
| 2487 | val.line, self->user_filename); |
| 2488 | else |
| 2489 | throw_error (NOT_FOUND_ERROR, _("No line %d in the current file."), |
| 2490 | val.line); |
| 2491 | } |
| 2492 | |
| 2493 | if (self->canonical) |
| 2494 | { |
| 2495 | char *copy = savestring (saved_arg, q - saved_arg); |
| 2496 | |
| 2497 | self->canonical->pre_expanded = 1; |
| 2498 | gdb_assert (self->user_filename || use_default); |
| 2499 | self->canonical->addr_string |
| 2500 | = xstrprintf ("%s:%s", (self->user_filename |
| 2501 | ? self->user_filename |
| 2502 | : self->default_symtab->filename), |
| 2503 | copy); |
| 2504 | xfree (copy); |
| 2505 | } |
| 2506 | |
| 2507 | return values; |
| 2508 | } |
| 2509 | |
| 2510 | \f |
| 2511 | |
| 2512 | /* Decode a linespec starting with a dollar sign. */ |
| 2513 | |
| 2514 | static struct symtabs_and_lines |
| 2515 | decode_dollar (struct linespec_state *self, char *copy) |
| 2516 | { |
| 2517 | LONGEST valx; |
| 2518 | int index = 0; |
| 2519 | struct symtabs_and_lines values; |
| 2520 | struct symtab_and_line val; |
| 2521 | char *p; |
| 2522 | struct symbol *sym; |
| 2523 | struct minimal_symbol *msymbol; |
| 2524 | int ix; |
| 2525 | struct symtab *elt; |
| 2526 | |
| 2527 | p = (copy[1] == '$') ? copy + 2 : copy + 1; |
| 2528 | while (*p >= '0' && *p <= '9') |
| 2529 | p++; |
| 2530 | if (!*p) /* Reached end of token without hitting non-digit. */ |
| 2531 | { |
| 2532 | /* We have a value history reference. */ |
| 2533 | struct value *val_history; |
| 2534 | |
| 2535 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); |
| 2536 | val_history = access_value_history ((copy[1] == '$') ? -index : index); |
| 2537 | if (TYPE_CODE (value_type (val_history)) != TYPE_CODE_INT) |
| 2538 | error (_("History values used in line " |
| 2539 | "specs must have integer values.")); |
| 2540 | valx = value_as_long (val_history); |
| 2541 | } |
| 2542 | else |
| 2543 | { |
| 2544 | /* Not all digits -- may be user variable/function or a |
| 2545 | convenience variable. */ |
| 2546 | |
| 2547 | volatile struct gdb_exception exc; |
| 2548 | |
| 2549 | /* Avoid "may be used uninitialized" warning. */ |
| 2550 | values.sals = NULL; |
| 2551 | values.nelts = 0; |
| 2552 | |
| 2553 | TRY_CATCH (exc, RETURN_MASK_ERROR) |
| 2554 | { |
| 2555 | values = decode_variable (self, copy); |
| 2556 | } |
| 2557 | |
| 2558 | if (exc.reason == 0) |
| 2559 | return values; |
| 2560 | |
| 2561 | if (exc.error != NOT_FOUND_ERROR) |
| 2562 | throw_exception (exc); |
| 2563 | |
| 2564 | /* Not a user variable or function -- must be convenience variable. */ |
| 2565 | if (!get_internalvar_integer (lookup_internalvar (copy + 1), &valx)) |
| 2566 | error (_("Convenience variables used in line " |
| 2567 | "specs must have integer values.")); |
| 2568 | } |
| 2569 | |
| 2570 | init_sal (&val); |
| 2571 | |
| 2572 | values.sals = NULL; |
| 2573 | values.nelts = 0; |
| 2574 | |
| 2575 | for (ix = 0; VEC_iterate (symtab_p, self->file_symtabs, ix, elt); ++ix) |
| 2576 | { |
| 2577 | if (elt == NULL) |
| 2578 | { |
| 2579 | elt = self->default_symtab; |
| 2580 | set_current_program_space (self->program_space); |
| 2581 | } |
| 2582 | else |
| 2583 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 2584 | |
| 2585 | /* Either history value or convenience value from above, in valx. */ |
| 2586 | val.symtab = elt; |
| 2587 | val.line = valx; |
| 2588 | val.pc = 0; |
| 2589 | val.pspace = elt ? SYMTAB_PSPACE (elt) : current_program_space; |
| 2590 | |
| 2591 | add_sal_to_sals (self, &values, &val, NULL); |
| 2592 | } |
| 2593 | |
| 2594 | if (self->canonical) |
| 2595 | { |
| 2596 | self->canonical->pre_expanded = 1; |
| 2597 | if (self->user_filename) |
| 2598 | self->canonical->addr_string = xstrprintf ("%s:%s", |
| 2599 | self->user_filename, copy); |
| 2600 | else |
| 2601 | self->canonical->addr_string = xstrdup (copy); |
| 2602 | } |
| 2603 | |
| 2604 | return values; |
| 2605 | } |
| 2606 | |
| 2607 | \f |
| 2608 | |
| 2609 | /* A helper for decode_line_1 that tries to find a label. The label |
| 2610 | is searched for in the current block. |
| 2611 | FUNCTION_SYMBOLS is a list of the enclosing functions; or NULL if none |
| 2612 | specified. |
| 2613 | COPY is the name of the label to find. |
| 2614 | CANONICAL is the same as the "canonical" argument to decode_line_1. |
| 2615 | RESULT is a pointer to a symtabs_and_lines structure which will be |
| 2616 | filled in on success. |
| 2617 | This function returns 1 if a label was found, 0 otherwise. */ |
| 2618 | |
| 2619 | static int |
| 2620 | decode_label (struct linespec_state *self, |
| 2621 | VEC (symbolp) *function_symbols, char *copy, |
| 2622 | struct symtabs_and_lines *result) |
| 2623 | { |
| 2624 | struct symbol *fn_sym; |
| 2625 | int ix; |
| 2626 | |
| 2627 | if (function_symbols == NULL) |
| 2628 | { |
| 2629 | struct block *block; |
| 2630 | struct symbol *sym; |
| 2631 | struct symtab_and_line sal; |
| 2632 | struct symtabs_and_lines values; |
| 2633 | |
| 2634 | values.nelts = 0; |
| 2635 | values.sals = NULL; |
| 2636 | |
| 2637 | set_current_program_space (self->program_space); |
| 2638 | block = get_search_block (NULL); |
| 2639 | |
| 2640 | for (; |
| 2641 | block && !BLOCK_FUNCTION (block); |
| 2642 | block = BLOCK_SUPERBLOCK (block)) |
| 2643 | ; |
| 2644 | if (!block) |
| 2645 | return 0; |
| 2646 | fn_sym = BLOCK_FUNCTION (block); |
| 2647 | |
| 2648 | sym = lookup_symbol (copy, block, LABEL_DOMAIN, 0); |
| 2649 | |
| 2650 | if (sym == NULL) |
| 2651 | return 0; |
| 2652 | |
| 2653 | symbol_to_sal (&sal, self->funfirstline, sym); |
| 2654 | add_sal_to_sals (self, &values, &sal, |
| 2655 | SYMBOL_NATURAL_NAME (fn_sym)); |
| 2656 | |
| 2657 | if (self->canonical) |
| 2658 | { |
| 2659 | self->canonical->special_display = 1; |
| 2660 | self->canonical->addr_string |
| 2661 | = xstrprintf ("%s:%s", SYMBOL_NATURAL_NAME (fn_sym), |
| 2662 | copy); |
| 2663 | } |
| 2664 | |
| 2665 | *result = values; |
| 2666 | |
| 2667 | return 1; |
| 2668 | } |
| 2669 | |
| 2670 | result->sals = NULL; |
| 2671 | result->nelts = 0; |
| 2672 | |
| 2673 | for (ix = 0; VEC_iterate (symbolp, function_symbols, ix, fn_sym); ++ix) |
| 2674 | { |
| 2675 | struct block *block; |
| 2676 | struct symbol *sym; |
| 2677 | |
| 2678 | set_current_program_space (SYMTAB_PSPACE (SYMBOL_SYMTAB (fn_sym))); |
| 2679 | block = SYMBOL_BLOCK_VALUE (fn_sym); |
| 2680 | sym = lookup_symbol (copy, block, LABEL_DOMAIN, 0); |
| 2681 | |
| 2682 | if (sym != NULL) |
| 2683 | { |
| 2684 | struct symtab_and_line sal; |
| 2685 | char *symname; |
| 2686 | |
| 2687 | symbol_to_sal (&sal, self->funfirstline, sym); |
| 2688 | symname = xstrprintf ("%s:%s", |
| 2689 | SYMBOL_NATURAL_NAME (fn_sym), |
| 2690 | SYMBOL_NATURAL_NAME (sym)); |
| 2691 | add_sal_to_sals (self, result, &sal, symname); |
| 2692 | xfree (symname); |
| 2693 | } |
| 2694 | } |
| 2695 | |
| 2696 | if (self->canonical && result->nelts > 0) |
| 2697 | { |
| 2698 | self->canonical->pre_expanded = 1; |
| 2699 | self->canonical->special_display = 1; |
| 2700 | |
| 2701 | gdb_assert (self->user_function); |
| 2702 | self->canonical->addr_string |
| 2703 | = xstrprintf ("%s:%s", self->user_function, copy); |
| 2704 | } |
| 2705 | |
| 2706 | return result->nelts > 0; |
| 2707 | } |
| 2708 | |
| 2709 | /* A callback used to possibly add a symbol to the results. */ |
| 2710 | |
| 2711 | static int |
| 2712 | collect_symbols (struct symbol *sym, void *data) |
| 2713 | { |
| 2714 | struct collect_info *info = data; |
| 2715 | struct symtab_and_line sal; |
| 2716 | |
| 2717 | if (symbol_to_sal (&sal, info->state->funfirstline, sym) |
| 2718 | && maybe_add_address (info->state->addr_set, |
| 2719 | SYMTAB_PSPACE (SYMBOL_SYMTAB (sym)), |
| 2720 | sal.pc)) |
| 2721 | add_sal_to_sals (info->state, &info->result, &sal, |
| 2722 | SYMBOL_NATURAL_NAME (sym)); |
| 2723 | |
| 2724 | return 1; /* Continue iterating. */ |
| 2725 | } |
| 2726 | |
| 2727 | /* We've found a minimal symbol MSYMBOL to associate with our |
| 2728 | linespec; add it to the result symtabs_and_lines. */ |
| 2729 | |
| 2730 | static void |
| 2731 | minsym_found (struct linespec_state *self, struct objfile *objfile, |
| 2732 | struct minimal_symbol *msymbol, |
| 2733 | struct symtabs_and_lines *result) |
| 2734 | { |
| 2735 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
| 2736 | CORE_ADDR pc; |
| 2737 | struct symtab_and_line sal; |
| 2738 | |
| 2739 | sal = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), |
| 2740 | (struct obj_section *) 0, 0); |
| 2741 | sal.section = SYMBOL_OBJ_SECTION (msymbol); |
| 2742 | |
| 2743 | /* The minimal symbol might point to a function descriptor; |
| 2744 | resolve it to the actual code address instead. */ |
| 2745 | pc = gdbarch_convert_from_func_ptr_addr (gdbarch, sal.pc, ¤t_target); |
| 2746 | if (pc != sal.pc) |
| 2747 | sal = find_pc_sect_line (pc, NULL, 0); |
| 2748 | |
| 2749 | if (self->funfirstline) |
| 2750 | skip_prologue_sal (&sal); |
| 2751 | |
| 2752 | if (maybe_add_address (self->addr_set, objfile->pspace, sal.pc)) |
| 2753 | add_sal_to_sals (self, result, &sal, SYMBOL_NATURAL_NAME (msymbol)); |
| 2754 | } |
| 2755 | |
| 2756 | /* A helper struct which just holds a minimal symbol and the object |
| 2757 | file from which it came. */ |
| 2758 | |
| 2759 | typedef struct minsym_and_objfile |
| 2760 | { |
| 2761 | struct minimal_symbol *minsym; |
| 2762 | struct objfile *objfile; |
| 2763 | } minsym_and_objfile_d; |
| 2764 | |
| 2765 | DEF_VEC_O (minsym_and_objfile_d); |
| 2766 | |
| 2767 | /* A helper struct to pass some data through |
| 2768 | iterate_over_minimal_symbols. */ |
| 2769 | |
| 2770 | struct collect_minsyms |
| 2771 | { |
| 2772 | /* The objfile we're examining. */ |
| 2773 | struct objfile *objfile; |
| 2774 | |
| 2775 | /* The funfirstline setting from the initial call. */ |
| 2776 | int funfirstline; |
| 2777 | |
| 2778 | /* The list_mode setting from the initial call. */ |
| 2779 | int list_mode; |
| 2780 | |
| 2781 | /* The resulting symbols. */ |
| 2782 | VEC (minsym_and_objfile_d) *msyms; |
| 2783 | }; |
| 2784 | |
| 2785 | /* A helper function to classify a minimal_symbol_type according to |
| 2786 | priority. */ |
| 2787 | |
| 2788 | static int |
| 2789 | classify_mtype (enum minimal_symbol_type t) |
| 2790 | { |
| 2791 | switch (t) |
| 2792 | { |
| 2793 | case mst_file_text: |
| 2794 | case mst_file_data: |
| 2795 | case mst_file_bss: |
| 2796 | /* Intermediate priority. */ |
| 2797 | return 1; |
| 2798 | |
| 2799 | case mst_solib_trampoline: |
| 2800 | /* Lowest priority. */ |
| 2801 | return 2; |
| 2802 | |
| 2803 | default: |
| 2804 | /* Highest priority. */ |
| 2805 | return 0; |
| 2806 | } |
| 2807 | } |
| 2808 | |
| 2809 | /* Callback for qsort that sorts symbols by priority. */ |
| 2810 | |
| 2811 | static int |
| 2812 | compare_msyms (const void *a, const void *b) |
| 2813 | { |
| 2814 | const minsym_and_objfile_d *moa = a; |
| 2815 | const minsym_and_objfile_d *mob = b; |
| 2816 | enum minimal_symbol_type ta = MSYMBOL_TYPE (moa->minsym); |
| 2817 | enum minimal_symbol_type tb = MSYMBOL_TYPE (mob->minsym); |
| 2818 | |
| 2819 | return classify_mtype (ta) - classify_mtype (tb); |
| 2820 | } |
| 2821 | |
| 2822 | /* Callback for iterate_over_minimal_symbols that adds the symbol to |
| 2823 | the result. */ |
| 2824 | |
| 2825 | static void |
| 2826 | add_minsym (struct minimal_symbol *minsym, void *d) |
| 2827 | { |
| 2828 | struct collect_minsyms *info = d; |
| 2829 | minsym_and_objfile_d mo; |
| 2830 | |
| 2831 | /* Exclude data symbols when looking for breakpoint locations. */ |
| 2832 | if (!info->list_mode) |
| 2833 | switch (minsym->type) |
| 2834 | { |
| 2835 | case mst_slot_got_plt: |
| 2836 | case mst_data: |
| 2837 | case mst_bss: |
| 2838 | case mst_abs: |
| 2839 | case mst_file_data: |
| 2840 | case mst_file_bss: |
| 2841 | { |
| 2842 | /* Make sure this minsym is not a function descriptor |
| 2843 | before we decide to discard it. */ |
| 2844 | struct gdbarch *gdbarch = info->objfile->gdbarch; |
| 2845 | CORE_ADDR addr = gdbarch_convert_from_func_ptr_addr |
| 2846 | (gdbarch, SYMBOL_VALUE_ADDRESS (minsym), |
| 2847 | ¤t_target); |
| 2848 | |
| 2849 | if (addr == SYMBOL_VALUE_ADDRESS (minsym)) |
| 2850 | return; |
| 2851 | } |
| 2852 | } |
| 2853 | |
| 2854 | mo.minsym = minsym; |
| 2855 | mo.objfile = info->objfile; |
| 2856 | VEC_safe_push (minsym_and_objfile_d, info->msyms, &mo); |
| 2857 | } |
| 2858 | |
| 2859 | /* Search minimal symbols in all objfiles for NAME. If SEARCH_PSPACE |
| 2860 | is not NULL, the search is restricted to just that program |
| 2861 | space. */ |
| 2862 | |
| 2863 | static void |
| 2864 | search_minsyms_for_name (struct collect_info *info, const char *name, |
| 2865 | struct program_space *search_pspace) |
| 2866 | { |
| 2867 | struct objfile *objfile; |
| 2868 | struct program_space *pspace; |
| 2869 | |
| 2870 | ALL_PSPACES (pspace) |
| 2871 | { |
| 2872 | struct collect_minsyms local; |
| 2873 | struct cleanup *cleanup; |
| 2874 | |
| 2875 | if (search_pspace != NULL && search_pspace != pspace) |
| 2876 | continue; |
| 2877 | if (pspace->executing_startup) |
| 2878 | continue; |
| 2879 | |
| 2880 | set_current_program_space (pspace); |
| 2881 | |
| 2882 | memset (&local, 0, sizeof (local)); |
| 2883 | local.funfirstline = info->state->funfirstline; |
| 2884 | local.list_mode = info->state->list_mode; |
| 2885 | |
| 2886 | cleanup = make_cleanup (VEC_cleanup (minsym_and_objfile_d), |
| 2887 | &local.msyms); |
| 2888 | |
| 2889 | ALL_OBJFILES (objfile) |
| 2890 | { |
| 2891 | local.objfile = objfile; |
| 2892 | iterate_over_minimal_symbols (objfile, name, add_minsym, &local); |
| 2893 | } |
| 2894 | |
| 2895 | if (!VEC_empty (minsym_and_objfile_d, local.msyms)) |
| 2896 | { |
| 2897 | int classification; |
| 2898 | int ix; |
| 2899 | minsym_and_objfile_d *item; |
| 2900 | |
| 2901 | qsort (VEC_address (minsym_and_objfile_d, local.msyms), |
| 2902 | VEC_length (minsym_and_objfile_d, local.msyms), |
| 2903 | sizeof (minsym_and_objfile_d), |
| 2904 | compare_msyms); |
| 2905 | |
| 2906 | /* Now the minsyms are in classification order. So, we walk |
| 2907 | over them and process just the minsyms with the same |
| 2908 | classification as the very first minsym in the list. */ |
| 2909 | item = VEC_index (minsym_and_objfile_d, local.msyms, 0); |
| 2910 | classification = classify_mtype (MSYMBOL_TYPE (item->minsym)); |
| 2911 | |
| 2912 | for (ix = 0; |
| 2913 | VEC_iterate (minsym_and_objfile_d, local.msyms, ix, item); |
| 2914 | ++ix) |
| 2915 | { |
| 2916 | if (classify_mtype (MSYMBOL_TYPE (item->minsym)) != classification) |
| 2917 | break; |
| 2918 | |
| 2919 | minsym_found (info->state, item->objfile, item->minsym, |
| 2920 | &info->result); |
| 2921 | } |
| 2922 | } |
| 2923 | |
| 2924 | do_cleanups (cleanup); |
| 2925 | } |
| 2926 | } |
| 2927 | |
| 2928 | /* A helper function to add all symbols matching NAME to INFO. If |
| 2929 | PSPACE is not NULL, the search is restricted to just that program |
| 2930 | space. */ |
| 2931 | |
| 2932 | static void |
| 2933 | add_matching_symbols_to_info (const char *name, |
| 2934 | struct collect_info *info, |
| 2935 | struct program_space *pspace) |
| 2936 | { |
| 2937 | int ix; |
| 2938 | struct symtab *elt; |
| 2939 | |
| 2940 | for (ix = 0; VEC_iterate (symtab_p, info->state->file_symtabs, ix, elt); ++ix) |
| 2941 | { |
| 2942 | struct symbol *sym; |
| 2943 | |
| 2944 | if (elt == NULL) |
| 2945 | { |
| 2946 | iterate_over_all_matching_symtabs (name, VAR_DOMAIN, |
| 2947 | collect_symbols, info, |
| 2948 | pspace); |
| 2949 | search_minsyms_for_name (info, name, pspace); |
| 2950 | } |
| 2951 | else if (pspace == NULL || pspace == SYMTAB_PSPACE (elt)) |
| 2952 | { |
| 2953 | /* Program spaces that are executing startup should have |
| 2954 | been filtered out earlier. */ |
| 2955 | gdb_assert (!SYMTAB_PSPACE (elt)->executing_startup); |
| 2956 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 2957 | LA_ITERATE_OVER_SYMBOLS (get_search_block (elt), name, |
| 2958 | VAR_DOMAIN, collect_symbols, |
| 2959 | info); |
| 2960 | } |
| 2961 | } |
| 2962 | } |
| 2963 | |
| 2964 | /* Decode a linespec that's a variable. If FILE_SYMTAB is non-NULL, |
| 2965 | look in that symtab's static variables first. */ |
| 2966 | |
| 2967 | static struct symtabs_and_lines |
| 2968 | decode_variable (struct linespec_state *self, char *copy) |
| 2969 | { |
| 2970 | struct collect_info info; |
| 2971 | const char *lookup_name; |
| 2972 | char *canon; |
| 2973 | struct cleanup *cleanup; |
| 2974 | |
| 2975 | info.state = self; |
| 2976 | info.result.sals = NULL; |
| 2977 | info.result.nelts = 0; |
| 2978 | |
| 2979 | cleanup = demangle_for_lookup (copy, current_language->la_language, |
| 2980 | &lookup_name); |
| 2981 | if (current_language->la_language == language_ada) |
| 2982 | { |
| 2983 | /* In Ada, the symbol lookups are performed using the encoded |
| 2984 | name rather than the demangled name. */ |
| 2985 | lookup_name = ada_name_for_lookup (copy); |
| 2986 | make_cleanup (xfree, (void *) lookup_name); |
| 2987 | } |
| 2988 | |
| 2989 | canon = cp_canonicalize_string_no_typedefs (lookup_name); |
| 2990 | if (canon != NULL) |
| 2991 | { |
| 2992 | make_cleanup (xfree, canon); |
| 2993 | lookup_name = canon; |
| 2994 | } |
| 2995 | |
| 2996 | add_matching_symbols_to_info (lookup_name, &info, NULL); |
| 2997 | |
| 2998 | if (info.result.nelts > 0) |
| 2999 | { |
| 3000 | if (self->canonical) |
| 3001 | { |
| 3002 | self->canonical->pre_expanded = 1; |
| 3003 | if (self->user_filename) |
| 3004 | self->canonical->addr_string |
| 3005 | = xstrprintf ("%s:%s", self->user_filename, copy); |
| 3006 | else |
| 3007 | self->canonical->addr_string = xstrdup (copy); |
| 3008 | } |
| 3009 | return info.result; |
| 3010 | } |
| 3011 | |
| 3012 | if (!have_full_symbols () |
| 3013 | && !have_partial_symbols () |
| 3014 | && !have_minimal_symbols ()) |
| 3015 | throw_error (NOT_FOUND_ERROR, |
| 3016 | _("No symbol table is loaded. Use the \"file\" command.")); |
| 3017 | if (self->user_filename) |
| 3018 | throw_error (NOT_FOUND_ERROR, _("Function \"%s\" not defined in \"%s\"."), |
| 3019 | copy, self->user_filename); |
| 3020 | else |
| 3021 | throw_error (NOT_FOUND_ERROR, _("Function \"%s\" not defined."), copy); |
| 3022 | } |
| 3023 | |
| 3024 | |
| 3025 | \f |
| 3026 | |
| 3027 | /* Now come some functions that are called from multiple places within |
| 3028 | decode_line_1. */ |
| 3029 | |
| 3030 | static int |
| 3031 | symbol_to_sal (struct symtab_and_line *result, |
| 3032 | int funfirstline, struct symbol *sym) |
| 3033 | { |
| 3034 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
| 3035 | { |
| 3036 | *result = find_function_start_sal (sym, funfirstline); |
| 3037 | return 1; |
| 3038 | } |
| 3039 | else |
| 3040 | { |
| 3041 | if (SYMBOL_CLASS (sym) == LOC_LABEL && SYMBOL_VALUE_ADDRESS (sym) != 0) |
| 3042 | { |
| 3043 | init_sal (result); |
| 3044 | result->symtab = SYMBOL_SYMTAB (sym); |
| 3045 | result->line = SYMBOL_LINE (sym); |
| 3046 | result->pc = SYMBOL_VALUE_ADDRESS (sym); |
| 3047 | result->pspace = SYMTAB_PSPACE (SYMBOL_SYMTAB (sym)); |
| 3048 | result->explicit_pc = 1; |
| 3049 | return 1; |
| 3050 | } |
| 3051 | else if (funfirstline) |
| 3052 | { |
| 3053 | /* Nothing. */ |
| 3054 | } |
| 3055 | else if (SYMBOL_LINE (sym) != 0) |
| 3056 | { |
| 3057 | /* We know its line number. */ |
| 3058 | init_sal (result); |
| 3059 | result->symtab = SYMBOL_SYMTAB (sym); |
| 3060 | result->line = SYMBOL_LINE (sym); |
| 3061 | result->pspace = SYMTAB_PSPACE (SYMBOL_SYMTAB (sym)); |
| 3062 | return 1; |
| 3063 | } |
| 3064 | } |
| 3065 | |
| 3066 | return 0; |
| 3067 | } |
| 3068 | |
| 3069 | /* See the comment in linespec.h. */ |
| 3070 | |
| 3071 | void |
| 3072 | init_linespec_result (struct linespec_result *lr) |
| 3073 | { |
| 3074 | memset (lr, 0, sizeof (*lr)); |
| 3075 | } |
| 3076 | |
| 3077 | /* See the comment in linespec.h. */ |
| 3078 | |
| 3079 | void |
| 3080 | destroy_linespec_result (struct linespec_result *ls) |
| 3081 | { |
| 3082 | int i; |
| 3083 | struct linespec_sals *lsal; |
| 3084 | |
| 3085 | xfree (ls->addr_string); |
| 3086 | for (i = 0; VEC_iterate (linespec_sals, ls->sals, i, lsal); ++i) |
| 3087 | { |
| 3088 | xfree (lsal->canonical); |
| 3089 | xfree (lsal->sals.sals); |
| 3090 | } |
| 3091 | VEC_free (linespec_sals, ls->sals); |
| 3092 | } |
| 3093 | |
| 3094 | /* Cleanup function for a linespec_result. */ |
| 3095 | |
| 3096 | static void |
| 3097 | cleanup_linespec_result (void *a) |
| 3098 | { |
| 3099 | destroy_linespec_result (a); |
| 3100 | } |
| 3101 | |
| 3102 | /* See the comment in linespec.h. */ |
| 3103 | |
| 3104 | struct cleanup * |
| 3105 | make_cleanup_destroy_linespec_result (struct linespec_result *ls) |
| 3106 | { |
| 3107 | return make_cleanup (cleanup_linespec_result, ls); |
| 3108 | } |