| 1 | /* Parser for linespec for the GNU debugger, GDB. |
| 2 | |
| 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
| 5 | 2009, 2010, 2011 Free Software Foundation, Inc. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "symtab.h" |
| 24 | #include "frame.h" |
| 25 | #include "command.h" |
| 26 | #include "symfile.h" |
| 27 | #include "objfiles.h" |
| 28 | #include "source.h" |
| 29 | #include "demangle.h" |
| 30 | #include "value.h" |
| 31 | #include "completer.h" |
| 32 | #include "cp-abi.h" |
| 33 | #include "cp-support.h" |
| 34 | #include "parser-defs.h" |
| 35 | #include "block.h" |
| 36 | #include "objc-lang.h" |
| 37 | #include "linespec.h" |
| 38 | #include "exceptions.h" |
| 39 | #include "language.h" |
| 40 | #include "interps.h" |
| 41 | #include "mi/mi-cmds.h" |
| 42 | #include "target.h" |
| 43 | #include "arch-utils.h" |
| 44 | #include <ctype.h> |
| 45 | #include "cli/cli-utils.h" |
| 46 | |
| 47 | /* We share this one with symtab.c, but it is not exported widely. */ |
| 48 | |
| 49 | extern char *operator_chars (char *, char **); |
| 50 | |
| 51 | /* Prototypes for local functions. */ |
| 52 | |
| 53 | static void initialize_defaults (struct symtab **default_symtab, |
| 54 | int *default_line); |
| 55 | |
| 56 | static struct symtabs_and_lines decode_indirect (char **argptr); |
| 57 | |
| 58 | static char *locate_first_half (char **argptr, int *is_quote_enclosed); |
| 59 | |
| 60 | static struct symtabs_and_lines decode_objc (char **argptr, |
| 61 | int funfirstline, |
| 62 | struct symtab *file_symtab, |
| 63 | struct linespec_result *canonical, |
| 64 | char *saved_arg); |
| 65 | |
| 66 | static struct symtabs_and_lines decode_compound (char **argptr, |
| 67 | int funfirstline, |
| 68 | struct linespec_result *canonical, |
| 69 | char *saved_arg, |
| 70 | char *p); |
| 71 | |
| 72 | static struct symbol *lookup_prefix_sym (char **argptr, char *p); |
| 73 | |
| 74 | static struct symtabs_and_lines find_method (int funfirstline, |
| 75 | struct linespec_result *canonical, |
| 76 | char *saved_arg, |
| 77 | char *copy, |
| 78 | struct type *t, |
| 79 | struct symbol *sym_class); |
| 80 | |
| 81 | static void cplusplus_error (const char *name, const char *fmt, ...) |
| 82 | ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (2, 3); |
| 83 | |
| 84 | static int total_number_of_methods (struct type *type); |
| 85 | |
| 86 | static int find_methods (struct type *, char *, |
| 87 | enum language, struct symbol **); |
| 88 | |
| 89 | static int add_matching_methods (int method_counter, struct type *t, |
| 90 | enum language language, |
| 91 | struct symbol **sym_arr); |
| 92 | |
| 93 | static int add_constructors (int method_counter, struct type *t, |
| 94 | enum language language, |
| 95 | struct symbol **sym_arr); |
| 96 | |
| 97 | static void build_canonical_line_spec (struct symtab_and_line *, |
| 98 | char *, struct linespec_result *); |
| 99 | |
| 100 | static char *find_toplevel_char (char *s, char c); |
| 101 | |
| 102 | static int is_objc_method_format (const char *s); |
| 103 | |
| 104 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], |
| 105 | int, int, |
| 106 | struct linespec_result *); |
| 107 | |
| 108 | static struct symtab *symtab_from_filename (char **argptr, |
| 109 | char *p, int is_quote_enclosed); |
| 110 | |
| 111 | static struct symbol *find_function_symbol (char **argptr, char *p, |
| 112 | int is_quote_enclosed); |
| 113 | |
| 114 | static struct |
| 115 | symtabs_and_lines decode_all_digits (char **argptr, |
| 116 | struct symtab *default_symtab, |
| 117 | int default_line, |
| 118 | struct linespec_result *canonical, |
| 119 | struct symtab *file_symtab, |
| 120 | char *q); |
| 121 | |
| 122 | static struct symtabs_and_lines decode_dollar (char *copy, |
| 123 | int funfirstline, |
| 124 | struct symtab *default_symtab, |
| 125 | struct linespec_result *canonical, |
| 126 | struct symtab *file_symtab); |
| 127 | |
| 128 | static int decode_label (struct symbol *function_symbol, |
| 129 | char *copy, struct linespec_result *canonical, |
| 130 | struct symtabs_and_lines *result); |
| 131 | |
| 132 | static struct symtabs_and_lines decode_variable (char *copy, |
| 133 | int funfirstline, |
| 134 | struct linespec_result *canonical, |
| 135 | struct symtab *file_symtab); |
| 136 | |
| 137 | static struct |
| 138 | symtabs_and_lines symbol_found (int funfirstline, |
| 139 | struct linespec_result *canonical, |
| 140 | char *copy, |
| 141 | struct symbol *sym, |
| 142 | struct symtab *file_symtab, |
| 143 | struct symbol *function_symbol); |
| 144 | |
| 145 | static struct |
| 146 | symtabs_and_lines minsym_found (int funfirstline, |
| 147 | struct minimal_symbol *msymbol); |
| 148 | |
| 149 | /* Helper functions. */ |
| 150 | |
| 151 | /* Issue a helpful hint on using the command completion feature on |
| 152 | single quoted demangled C++ symbols as part of the completion |
| 153 | error. */ |
| 154 | |
| 155 | static void |
| 156 | cplusplus_error (const char *name, const char *fmt, ...) |
| 157 | { |
| 158 | struct ui_file *tmp_stream; |
| 159 | char *message; |
| 160 | |
| 161 | tmp_stream = mem_fileopen (); |
| 162 | make_cleanup_ui_file_delete (tmp_stream); |
| 163 | |
| 164 | { |
| 165 | va_list args; |
| 166 | |
| 167 | va_start (args, fmt); |
| 168 | vfprintf_unfiltered (tmp_stream, fmt, args); |
| 169 | va_end (args); |
| 170 | } |
| 171 | |
| 172 | while (*name == '\'') |
| 173 | name++; |
| 174 | fprintf_unfiltered (tmp_stream, |
| 175 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" |
| 176 | "(Note leading single quote.)"), |
| 177 | name, name); |
| 178 | |
| 179 | message = ui_file_xstrdup (tmp_stream, NULL); |
| 180 | make_cleanup (xfree, message); |
| 181 | throw_error (NOT_FOUND_ERROR, "%s", message); |
| 182 | } |
| 183 | |
| 184 | /* Return the number of methods described for TYPE, including the |
| 185 | methods from types it derives from. This can't be done in the symbol |
| 186 | reader because the type of the baseclass might still be stubbed |
| 187 | when the definition of the derived class is parsed. */ |
| 188 | |
| 189 | static int |
| 190 | total_number_of_methods (struct type *type) |
| 191 | { |
| 192 | int n; |
| 193 | int count; |
| 194 | |
| 195 | CHECK_TYPEDEF (type); |
| 196 | if (! HAVE_CPLUS_STRUCT (type)) |
| 197 | return 0; |
| 198 | count = TYPE_NFN_FIELDS_TOTAL (type); |
| 199 | |
| 200 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) |
| 201 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); |
| 202 | |
| 203 | return count; |
| 204 | } |
| 205 | |
| 206 | /* Recursive helper function for decode_line_1. |
| 207 | Look for methods named NAME in type T. |
| 208 | Return number of matches. |
| 209 | Put matches in SYM_ARR, which should have been allocated with |
| 210 | a size of total_number_of_methods (T) * sizeof (struct symbol *). |
| 211 | Note that this function is g++ specific. */ |
| 212 | |
| 213 | static int |
| 214 | find_methods (struct type *t, char *name, enum language language, |
| 215 | struct symbol **sym_arr) |
| 216 | { |
| 217 | int i1 = 0; |
| 218 | int ibase; |
| 219 | char *class_name = type_name_no_tag (t); |
| 220 | struct cleanup *cleanup; |
| 221 | char *canon; |
| 222 | |
| 223 | /* NAME is typed by the user: it needs to be canonicalized before |
| 224 | passing to lookup_symbol. */ |
| 225 | canon = cp_canonicalize_string (name); |
| 226 | if (canon != NULL) |
| 227 | { |
| 228 | name = canon; |
| 229 | cleanup = make_cleanup (xfree, name); |
| 230 | } |
| 231 | else |
| 232 | cleanup = make_cleanup (null_cleanup, NULL); |
| 233 | |
| 234 | /* Ignore this class if it doesn't have a name. This is ugly, but |
| 235 | unless we figure out how to get the physname without the name of |
| 236 | the class, then the loop can't do any good. */ |
| 237 | if (class_name |
| 238 | && (lookup_symbol_in_language (class_name, (struct block *) NULL, |
| 239 | STRUCT_DOMAIN, language, (int *) NULL))) |
| 240 | { |
| 241 | int method_counter; |
| 242 | int name_len = strlen (name); |
| 243 | |
| 244 | CHECK_TYPEDEF (t); |
| 245 | |
| 246 | /* Loop over each method name. At this level, all overloads of a name |
| 247 | are counted as a single name. There is an inner loop which loops over |
| 248 | each overload. */ |
| 249 | |
| 250 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; |
| 251 | method_counter >= 0; |
| 252 | --method_counter) |
| 253 | { |
| 254 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); |
| 255 | char dem_opname[64]; |
| 256 | |
| 257 | if (strncmp (method_name, "__", 2) == 0 || |
| 258 | strncmp (method_name, "op", 2) == 0 || |
| 259 | strncmp (method_name, "type", 4) == 0) |
| 260 | { |
| 261 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) |
| 262 | method_name = dem_opname; |
| 263 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) |
| 264 | method_name = dem_opname; |
| 265 | } |
| 266 | |
| 267 | if (strcmp_iw (name, method_name) == 0) |
| 268 | /* Find all the overloaded methods with that name. */ |
| 269 | i1 += add_matching_methods (method_counter, t, language, |
| 270 | sym_arr + i1); |
| 271 | else if (strncmp (class_name, name, name_len) == 0 |
| 272 | && (class_name[name_len] == '\0' |
| 273 | || class_name[name_len] == '<')) |
| 274 | i1 += add_constructors (method_counter, t, language, |
| 275 | sym_arr + i1); |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | /* Only search baseclasses if there is no match yet, since names in |
| 280 | derived classes override those in baseclasses. |
| 281 | |
| 282 | FIXME: The above is not true; it is only true of member functions |
| 283 | if they have the same number of arguments (??? - section 13.1 of the |
| 284 | ARM says the function members are not in the same scope but doesn't |
| 285 | really spell out the rules in a way I understand. In any case, if |
| 286 | the number of arguments differ this is a case in which we can overload |
| 287 | rather than hiding without any problem, and gcc 2.4.5 does overload |
| 288 | rather than hiding in this case). */ |
| 289 | |
| 290 | if (i1 == 0) |
| 291 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) |
| 292 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, |
| 293 | language, sym_arr + i1); |
| 294 | |
| 295 | do_cleanups (cleanup); |
| 296 | return i1; |
| 297 | } |
| 298 | |
| 299 | /* Add the symbols associated to methods of the class whose type is T |
| 300 | and whose name matches the method indexed by METHOD_COUNTER in the |
| 301 | array SYM_ARR. Return the number of methods added. */ |
| 302 | |
| 303 | static int |
| 304 | add_matching_methods (int method_counter, struct type *t, |
| 305 | enum language language, struct symbol **sym_arr) |
| 306 | { |
| 307 | int field_counter; |
| 308 | int i1 = 0; |
| 309 | |
| 310 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; |
| 311 | field_counter >= 0; |
| 312 | --field_counter) |
| 313 | { |
| 314 | struct fn_field *f; |
| 315 | const char *phys_name; |
| 316 | |
| 317 | f = TYPE_FN_FIELDLIST1 (t, method_counter); |
| 318 | |
| 319 | if (TYPE_FN_FIELD_STUB (f, field_counter)) |
| 320 | { |
| 321 | char *tmp_name, *tmp2; |
| 322 | |
| 323 | tmp_name = gdb_mangle_name (t, |
| 324 | method_counter, |
| 325 | field_counter); |
| 326 | tmp2 = alloca (strlen (tmp_name) + 1); |
| 327 | strcpy (tmp2, tmp_name); |
| 328 | xfree (tmp_name); |
| 329 | phys_name = tmp2; |
| 330 | } |
| 331 | else |
| 332 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); |
| 333 | |
| 334 | sym_arr[i1] = lookup_symbol_in_language (phys_name, |
| 335 | NULL, VAR_DOMAIN, |
| 336 | language, |
| 337 | (int *) NULL); |
| 338 | if (sym_arr[i1]) |
| 339 | i1++; |
| 340 | else |
| 341 | { |
| 342 | /* This error message gets printed, but the method |
| 343 | still seems to be found. |
| 344 | fputs_filtered("(Cannot find method ", gdb_stdout); |
| 345 | fprintf_symbol_filtered (gdb_stdout, phys_name, |
| 346 | language_cplus, |
| 347 | DMGL_PARAMS | DMGL_ANSI); |
| 348 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); |
| 349 | */ |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | return i1; |
| 354 | } |
| 355 | |
| 356 | /* Add the symbols associated to constructors of the class whose type |
| 357 | is CLASS_TYPE and which are indexed by by METHOD_COUNTER to the |
| 358 | array SYM_ARR. Return the number of methods added. */ |
| 359 | |
| 360 | static int |
| 361 | add_constructors (int method_counter, struct type *t, |
| 362 | enum language language, struct symbol **sym_arr) |
| 363 | { |
| 364 | int field_counter; |
| 365 | int i1 = 0; |
| 366 | |
| 367 | /* For GCC 3.x and stabs, constructors and destructors |
| 368 | have names like __base_ctor and __complete_dtor. |
| 369 | Check the physname for now if we're looking for a |
| 370 | constructor. */ |
| 371 | for (field_counter |
| 372 | = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; |
| 373 | field_counter >= 0; |
| 374 | --field_counter) |
| 375 | { |
| 376 | struct fn_field *f; |
| 377 | const char *phys_name; |
| 378 | |
| 379 | f = TYPE_FN_FIELDLIST1 (t, method_counter); |
| 380 | |
| 381 | /* GCC 3.x will never produce stabs stub methods, so |
| 382 | we don't need to handle this case. */ |
| 383 | if (TYPE_FN_FIELD_STUB (f, field_counter)) |
| 384 | continue; |
| 385 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); |
| 386 | if (! is_constructor_name (phys_name)) |
| 387 | continue; |
| 388 | |
| 389 | /* If this method is actually defined, include it in the |
| 390 | list. */ |
| 391 | sym_arr[i1] = lookup_symbol_in_language (phys_name, |
| 392 | NULL, VAR_DOMAIN, |
| 393 | language, |
| 394 | (int *) NULL); |
| 395 | if (sym_arr[i1]) |
| 396 | i1++; |
| 397 | } |
| 398 | |
| 399 | return i1; |
| 400 | } |
| 401 | |
| 402 | /* Helper function for decode_line_1. |
| 403 | Build a canonical line spec in CANONICAL if it is non-NULL and if |
| 404 | the SAL has a symtab. |
| 405 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. |
| 406 | If SYMNAME is NULL the line number from SAL is used and the canonical |
| 407 | line spec is `filename:linenum'. */ |
| 408 | |
| 409 | static void |
| 410 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, |
| 411 | struct linespec_result *canonical) |
| 412 | { |
| 413 | char **canonical_arr; |
| 414 | char *canonical_name; |
| 415 | char *filename; |
| 416 | struct symtab *s = sal->symtab; |
| 417 | |
| 418 | if (s == (struct symtab *) NULL |
| 419 | || s->filename == (char *) NULL |
| 420 | || canonical == NULL) |
| 421 | return; |
| 422 | |
| 423 | canonical_arr = (char **) xmalloc (sizeof (char *)); |
| 424 | canonical->canonical = canonical_arr; |
| 425 | |
| 426 | filename = s->filename; |
| 427 | if (symname != NULL) |
| 428 | { |
| 429 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); |
| 430 | sprintf (canonical_name, "%s:%s", filename, symname); |
| 431 | } |
| 432 | else |
| 433 | { |
| 434 | canonical_name = xmalloc (strlen (filename) + 30); |
| 435 | sprintf (canonical_name, "%s:%d", filename, sal->line); |
| 436 | } |
| 437 | canonical_arr[0] = canonical_name; |
| 438 | } |
| 439 | |
| 440 | |
| 441 | |
| 442 | /* Find an instance of the character C in the string S that is outside |
| 443 | of all parenthesis pairs, single-quoted strings, and double-quoted |
| 444 | strings. Also, ignore the char within a template name, like a ',' |
| 445 | within foo<int, int>. */ |
| 446 | |
| 447 | static char * |
| 448 | find_toplevel_char (char *s, char c) |
| 449 | { |
| 450 | int quoted = 0; /* zero if we're not in quotes; |
| 451 | '"' if we're in a double-quoted string; |
| 452 | '\'' if we're in a single-quoted string. */ |
| 453 | int depth = 0; /* Number of unclosed parens we've seen. */ |
| 454 | char *scan; |
| 455 | |
| 456 | for (scan = s; *scan; scan++) |
| 457 | { |
| 458 | if (quoted) |
| 459 | { |
| 460 | if (*scan == quoted) |
| 461 | quoted = 0; |
| 462 | else if (*scan == '\\' && *(scan + 1)) |
| 463 | scan++; |
| 464 | } |
| 465 | else if (*scan == c && ! quoted && depth == 0) |
| 466 | return scan; |
| 467 | else if (*scan == '"' || *scan == '\'') |
| 468 | quoted = *scan; |
| 469 | else if (*scan == '(' || *scan == '<') |
| 470 | depth++; |
| 471 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
| 472 | depth--; |
| 473 | } |
| 474 | |
| 475 | return 0; |
| 476 | } |
| 477 | |
| 478 | /* Determines if the gives string corresponds to an Objective-C method |
| 479 | representation, such as -[Foo bar:] or +[Foo bar]. Objective-C symbols |
| 480 | are allowed to have spaces and parentheses in them. */ |
| 481 | |
| 482 | static int |
| 483 | is_objc_method_format (const char *s) |
| 484 | { |
| 485 | if (s == NULL || *s == '\0') |
| 486 | return 0; |
| 487 | /* Handle arguments with the format FILENAME:SYMBOL. */ |
| 488 | if ((s[0] == ':') && (strchr ("+-", s[1]) != NULL) |
| 489 | && (s[2] == '[') && strchr(s, ']')) |
| 490 | return 1; |
| 491 | /* Handle arguments that are just SYMBOL. */ |
| 492 | else if ((strchr ("+-", s[0]) != NULL) && (s[1] == '[') && strchr(s, ']')) |
| 493 | return 1; |
| 494 | return 0; |
| 495 | } |
| 496 | |
| 497 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to |
| 498 | operate on (ask user if necessary). |
| 499 | If CANONICAL is non-NULL return a corresponding array of mangled names |
| 500 | as canonical line specs there. */ |
| 501 | |
| 502 | static struct symtabs_and_lines |
| 503 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, |
| 504 | struct linespec_result *canonical) |
| 505 | { |
| 506 | struct symtabs_and_lines values, return_values; |
| 507 | char *args, *arg1; |
| 508 | int i; |
| 509 | char *prompt; |
| 510 | char *symname; |
| 511 | struct cleanup *old_chain; |
| 512 | char **canonical_arr = (char **) NULL; |
| 513 | const char *select_mode = multiple_symbols_select_mode (); |
| 514 | |
| 515 | if (select_mode == multiple_symbols_cancel) |
| 516 | error (_("canceled because the command is ambiguous\n" |
| 517 | "See set/show multiple-symbol.")); |
| 518 | |
| 519 | values.sals = (struct symtab_and_line *) |
| 520 | alloca (nelts * sizeof (struct symtab_and_line)); |
| 521 | return_values.sals = (struct symtab_and_line *) |
| 522 | xmalloc (nelts * sizeof (struct symtab_and_line)); |
| 523 | old_chain = make_cleanup (xfree, return_values.sals); |
| 524 | |
| 525 | if (canonical) |
| 526 | { |
| 527 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); |
| 528 | make_cleanup (xfree, canonical_arr); |
| 529 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
| 530 | canonical->canonical = canonical_arr; |
| 531 | } |
| 532 | |
| 533 | i = 0; |
| 534 | while (i < nelts) |
| 535 | { |
| 536 | init_sal (&return_values.sals[i]); /* Initialize to zeroes. */ |
| 537 | init_sal (&values.sals[i]); |
| 538 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) |
| 539 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); |
| 540 | i++; |
| 541 | } |
| 542 | |
| 543 | /* If select_mode is "all", then do not print the multiple-choice |
| 544 | menu and act as if the user had chosen choice "1" (all). */ |
| 545 | if (select_mode == multiple_symbols_all |
| 546 | || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ()))) |
| 547 | args = "1"; |
| 548 | else |
| 549 | { |
| 550 | i = 0; |
| 551 | printf_unfiltered (_("[0] cancel\n[1] all\n")); |
| 552 | while (i < nelts) |
| 553 | { |
| 554 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) |
| 555 | { |
| 556 | if (values.sals[i].symtab) |
| 557 | printf_unfiltered ("[%d] %s at %s:%d\n", |
| 558 | (i + 2), |
| 559 | SYMBOL_PRINT_NAME (sym_arr[i]), |
| 560 | values.sals[i].symtab->filename, |
| 561 | values.sals[i].line); |
| 562 | else |
| 563 | printf_unfiltered (_("[%d] %s at ?FILE:%d [No symtab? " |
| 564 | "Probably broken debug info...]\n"), |
| 565 | (i + 2), |
| 566 | SYMBOL_PRINT_NAME (sym_arr[i]), |
| 567 | values.sals[i].line); |
| 568 | |
| 569 | } |
| 570 | else |
| 571 | printf_unfiltered (_("?HERE\n")); |
| 572 | i++; |
| 573 | } |
| 574 | |
| 575 | prompt = getenv ("PS2"); |
| 576 | if (prompt == NULL) |
| 577 | { |
| 578 | prompt = "> "; |
| 579 | } |
| 580 | args = command_line_input (prompt, 0, "overload-choice"); |
| 581 | } |
| 582 | |
| 583 | if (args == 0 || *args == 0) |
| 584 | error_no_arg (_("one or more choice numbers")); |
| 585 | |
| 586 | i = 0; |
| 587 | while (*args) |
| 588 | { |
| 589 | int num; |
| 590 | |
| 591 | arg1 = args; |
| 592 | while (*arg1 >= '0' && *arg1 <= '9') |
| 593 | arg1++; |
| 594 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') |
| 595 | error (_("Arguments must be choice numbers.")); |
| 596 | |
| 597 | num = atoi (args); |
| 598 | |
| 599 | if (num == 0) |
| 600 | error (_("canceled")); |
| 601 | else if (num == 1) |
| 602 | { |
| 603 | if (canonical_arr) |
| 604 | { |
| 605 | for (i = 0; i < nelts; i++) |
| 606 | { |
| 607 | if (canonical_arr[i] == NULL) |
| 608 | { |
| 609 | symname = SYMBOL_LINKAGE_NAME (sym_arr[i]); |
| 610 | canonical_arr[i] = xstrdup (symname); |
| 611 | } |
| 612 | } |
| 613 | } |
| 614 | memcpy (return_values.sals, values.sals, |
| 615 | (nelts * sizeof (struct symtab_and_line))); |
| 616 | return_values.nelts = nelts; |
| 617 | discard_cleanups (old_chain); |
| 618 | return return_values; |
| 619 | } |
| 620 | |
| 621 | if (num >= nelts + 2) |
| 622 | { |
| 623 | printf_unfiltered (_("No choice number %d.\n"), num); |
| 624 | } |
| 625 | else |
| 626 | { |
| 627 | num -= 2; |
| 628 | if (values.sals[num].pc) |
| 629 | { |
| 630 | if (canonical_arr) |
| 631 | { |
| 632 | symname = SYMBOL_LINKAGE_NAME (sym_arr[num]); |
| 633 | make_cleanup (xfree, symname); |
| 634 | canonical_arr[i] = xstrdup (symname); |
| 635 | } |
| 636 | return_values.sals[i++] = values.sals[num]; |
| 637 | values.sals[num].pc = 0; |
| 638 | } |
| 639 | else |
| 640 | { |
| 641 | printf_unfiltered (_("duplicate request for %d ignored.\n"), |
| 642 | num); |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | args = arg1; |
| 647 | while (*args == ' ' || *args == '\t') |
| 648 | args++; |
| 649 | } |
| 650 | return_values.nelts = i; |
| 651 | discard_cleanups (old_chain); |
| 652 | return return_values; |
| 653 | } |
| 654 | |
| 655 | /* A helper function for decode_line_1 and friends which skips P |
| 656 | past any method overload information at the beginning of P, e.g., |
| 657 | "(const struct foo *)". |
| 658 | |
| 659 | This function assumes that P has already been validated to contain |
| 660 | overload information, and it will assert if *P != '('. */ |
| 661 | static char * |
| 662 | find_method_overload_end (char *p) |
| 663 | { |
| 664 | int depth = 0; |
| 665 | |
| 666 | gdb_assert (*p == '('); |
| 667 | |
| 668 | while (*p) |
| 669 | { |
| 670 | if (*p == '(') |
| 671 | ++depth; |
| 672 | else if (*p == ')') |
| 673 | { |
| 674 | if (--depth == 0) |
| 675 | { |
| 676 | ++p; |
| 677 | break; |
| 678 | } |
| 679 | } |
| 680 | ++p; |
| 681 | } |
| 682 | |
| 683 | return p; |
| 684 | } |
| 685 | |
| 686 | /* Does P point to a sequence of characters which implies the end |
| 687 | of a name? Terminals include "if" and "thread" clauses. */ |
| 688 | |
| 689 | static int |
| 690 | name_end (char *p) |
| 691 | { |
| 692 | while (isspace (*p)) |
| 693 | ++p; |
| 694 | if (*p == 'i' && p[1] == 'f' |
| 695 | && (isspace (p[2]) || p[2] == '\0' || p[2] == '(')) |
| 696 | return 1; |
| 697 | |
| 698 | if (strncmp (p, "thread", 6) == 0 |
| 699 | && (isspace (p[6]) || p[6] == '\0')) |
| 700 | return 1; |
| 701 | |
| 702 | return 0; |
| 703 | } |
| 704 | |
| 705 | /* Keep important information used when looking up a name. This includes |
| 706 | template parameters, overload information, and important keywords. */ |
| 707 | |
| 708 | static char * |
| 709 | keep_name_info (char *ptr) |
| 710 | { |
| 711 | char *p = ptr; |
| 712 | char *start = ptr; |
| 713 | |
| 714 | /* Keep any template parameters. */ |
| 715 | if (name_end (ptr)) |
| 716 | return remove_trailing_whitespace (start, ptr); |
| 717 | |
| 718 | while (isspace (*p)) |
| 719 | ++p; |
| 720 | if (*p == '<') |
| 721 | ptr = p = find_template_name_end (ptr); |
| 722 | |
| 723 | if (name_end (ptr)) |
| 724 | return remove_trailing_whitespace (start, ptr); |
| 725 | |
| 726 | /* Keep method overload information. */ |
| 727 | if (*p == '(') |
| 728 | ptr = p = find_method_overload_end (p); |
| 729 | |
| 730 | if (name_end (ptr)) |
| 731 | return remove_trailing_whitespace (start, ptr); |
| 732 | |
| 733 | /* Keep important keywords. */ |
| 734 | while (isspace (*p)) |
| 735 | ++p; |
| 736 | if (strncmp (p, "const", 5) == 0 |
| 737 | && (isspace (p[5]) || p[5] == '\0' |
| 738 | || strchr (get_gdb_completer_quote_characters (), p[5]) != NULL)) |
| 739 | ptr = p = p + 5; |
| 740 | |
| 741 | return remove_trailing_whitespace (start, ptr); |
| 742 | } |
| 743 | |
| 744 | \f |
| 745 | /* The parser of linespec itself. */ |
| 746 | |
| 747 | /* Parse a string that specifies a line number. |
| 748 | Pass the address of a char * variable; that variable will be |
| 749 | advanced over the characters actually parsed. |
| 750 | |
| 751 | The string can be: |
| 752 | |
| 753 | LINENUM -- that line number in current file. PC returned is 0. |
| 754 | FILE:LINENUM -- that line in that file. PC returned is 0. |
| 755 | FUNCTION -- line number of openbrace of that function. |
| 756 | PC returned is the start of the function. |
| 757 | LABEL -- a label in the current scope |
| 758 | VARIABLE -- line number of definition of that variable. |
| 759 | PC returned is 0. |
| 760 | FILE:FUNCTION -- likewise, but prefer functions in that file. |
| 761 | *EXPR -- line in which address EXPR appears. |
| 762 | |
| 763 | This may all be followed by an "if EXPR", which we ignore. |
| 764 | |
| 765 | FUNCTION may be an undebuggable function found in minimal symbol table. |
| 766 | |
| 767 | If the argument FUNFIRSTLINE is nonzero, we want the first line |
| 768 | of real code inside a function when a function is specified, and it is |
| 769 | not OK to specify a variable or type to get its line number. |
| 770 | |
| 771 | DEFAULT_SYMTAB specifies the file to use if none is specified. |
| 772 | It defaults to current_source_symtab. |
| 773 | DEFAULT_LINE specifies the line number to use for relative |
| 774 | line numbers (that start with signs). Defaults to current_source_line. |
| 775 | If CANONICAL is non-NULL, store an array of strings containing the canonical |
| 776 | line specs there if necessary. Currently overloaded member functions and |
| 777 | line numbers or static functions without a filename yield a canonical |
| 778 | line spec. The array and the line spec strings are allocated on the heap, |
| 779 | it is the callers responsibility to free them. |
| 780 | |
| 781 | Note that it is possible to return zero for the symtab |
| 782 | if no file is validly specified. Callers must check that. |
| 783 | Also, the line number returned may be invalid. */ |
| 784 | |
| 785 | /* We allow single quotes in various places. This is a hideous |
| 786 | kludge, which exists because the completer can't yet deal with the |
| 787 | lack of single quotes. FIXME: write a linespec_completer which we |
| 788 | can use as appropriate instead of make_symbol_completion_list. */ |
| 789 | |
| 790 | struct symtabs_and_lines |
| 791 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, |
| 792 | int default_line, struct linespec_result *canonical) |
| 793 | { |
| 794 | char *p; |
| 795 | char *q; |
| 796 | /* If a file name is specified, this is its symtab. */ |
| 797 | struct symtab *file_symtab = NULL; |
| 798 | |
| 799 | char *copy; |
| 800 | /* This says whether or not something in *ARGPTR is quoted with |
| 801 | completer_quotes (i.e. with single quotes). */ |
| 802 | int is_quoted; |
| 803 | /* Is *ARGPTR is enclosed in double quotes? */ |
| 804 | int is_quote_enclosed; |
| 805 | int is_objc_method = 0; |
| 806 | char *saved_arg = *argptr; |
| 807 | /* If IS_QUOTED, the end of the quoted bit. */ |
| 808 | char *end_quote = NULL; |
| 809 | /* The "first half" of the linespec. */ |
| 810 | char *first_half; |
| 811 | |
| 812 | /* If we are parsing `function:label', this holds the symbol for the |
| 813 | function. */ |
| 814 | struct symbol *function_symbol = NULL; |
| 815 | /* If FUNCTION_SYMBOL is not NULL, then this is the exception that |
| 816 | was thrown when trying to parse a filename. */ |
| 817 | volatile struct gdb_exception file_exception; |
| 818 | |
| 819 | /* Defaults have defaults. */ |
| 820 | |
| 821 | initialize_defaults (&default_symtab, &default_line); |
| 822 | |
| 823 | /* See if arg is *PC. */ |
| 824 | |
| 825 | if (**argptr == '*') |
| 826 | return decode_indirect (argptr); |
| 827 | |
| 828 | is_quoted = (strchr (get_gdb_completer_quote_characters (), |
| 829 | **argptr) != NULL); |
| 830 | |
| 831 | if (is_quoted) |
| 832 | end_quote = skip_quoted (*argptr); |
| 833 | |
| 834 | /* Check to see if it's a multipart linespec (with colons or |
| 835 | periods). */ |
| 836 | |
| 837 | /* Locate the end of the first half of the linespec. |
| 838 | After the call, for instance, if the argptr string is "foo.c:123" |
| 839 | p will point at "123". If there is only one part, like "foo", p |
| 840 | will point to "". If this is a C++ name, like "A::B::foo", p will |
| 841 | point to "::B::foo". Argptr is not changed by this call. */ |
| 842 | |
| 843 | first_half = p = locate_first_half (argptr, &is_quote_enclosed); |
| 844 | |
| 845 | /* Check if this is an Objective-C method (anything that starts with |
| 846 | a '+' or '-' and a '['). */ |
| 847 | if (is_objc_method_format (p)) |
| 848 | is_objc_method = 1; |
| 849 | |
| 850 | /* Check if the symbol could be an Objective-C selector. */ |
| 851 | |
| 852 | { |
| 853 | struct symtabs_and_lines values; |
| 854 | |
| 855 | values = decode_objc (argptr, funfirstline, NULL, |
| 856 | canonical, saved_arg); |
| 857 | if (values.sals != NULL) |
| 858 | return values; |
| 859 | } |
| 860 | |
| 861 | /* Does it look like there actually were two parts? */ |
| 862 | |
| 863 | if (p[0] == ':' || p[0] == '.') |
| 864 | { |
| 865 | /* Is it a C++ or Java compound data structure? |
| 866 | The check on p[1] == ':' is capturing the case of "::", |
| 867 | since p[0]==':' was checked above. |
| 868 | Note that the call to decode_compound does everything |
| 869 | for us, including the lookup on the symbol table, so we |
| 870 | can return now. */ |
| 871 | |
| 872 | if (p[0] == '.' || p[1] == ':') |
| 873 | { |
| 874 | struct symtabs_and_lines values; |
| 875 | |
| 876 | if (is_quote_enclosed) |
| 877 | ++saved_arg; |
| 878 | values = decode_compound (argptr, funfirstline, canonical, |
| 879 | saved_arg, p); |
| 880 | if (is_quoted && **argptr == '\'') |
| 881 | *argptr = *argptr + 1; |
| 882 | return values; |
| 883 | } |
| 884 | |
| 885 | /* No, the first part is a filename; set file_symtab to be that file's |
| 886 | symtab. Also, move argptr past the filename. */ |
| 887 | |
| 888 | TRY_CATCH (file_exception, RETURN_MASK_ERROR) |
| 889 | { |
| 890 | file_symtab = symtab_from_filename (argptr, p, is_quote_enclosed); |
| 891 | } |
| 892 | /* If that failed, maybe we have `function:label'. */ |
| 893 | if (file_exception.reason < 0) |
| 894 | { |
| 895 | function_symbol = find_function_symbol (argptr, p, is_quote_enclosed); |
| 896 | /* If we did not find a function, re-throw the original |
| 897 | exception. */ |
| 898 | if (!function_symbol) |
| 899 | throw_exception (file_exception); |
| 900 | } |
| 901 | |
| 902 | /* Check for single quotes on the non-filename part. */ |
| 903 | if (!is_quoted) |
| 904 | { |
| 905 | is_quoted = (**argptr |
| 906 | && strchr (get_gdb_completer_quote_characters (), |
| 907 | **argptr) != NULL); |
| 908 | if (is_quoted) |
| 909 | end_quote = skip_quoted (*argptr); |
| 910 | } |
| 911 | } |
| 912 | |
| 913 | /* file_symtab is specified file's symtab, or 0 if no file specified. |
| 914 | If we are parsing `function:symbol', then FUNCTION_SYMBOL is the |
| 915 | function before the `:'. |
| 916 | arg no longer contains the file name. */ |
| 917 | |
| 918 | /* If the filename was quoted, we must re-check the quotation. */ |
| 919 | |
| 920 | if (end_quote == first_half && *end_quote!= '\0') |
| 921 | { |
| 922 | is_quoted = (**argptr |
| 923 | && strchr (get_gdb_completer_quote_characters (), |
| 924 | **argptr) != NULL); |
| 925 | if (is_quoted) |
| 926 | end_quote = skip_quoted (*argptr); |
| 927 | } |
| 928 | |
| 929 | /* Check whether arg is all digits (and sign). */ |
| 930 | |
| 931 | q = *argptr; |
| 932 | if (*q == '-' || *q == '+') |
| 933 | q++; |
| 934 | while (*q >= '0' && *q <= '9') |
| 935 | q++; |
| 936 | |
| 937 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',') |
| 938 | && function_symbol == NULL) |
| 939 | /* We found a token consisting of all digits -- at least one digit. */ |
| 940 | return decode_all_digits (argptr, default_symtab, default_line, |
| 941 | canonical, file_symtab, q); |
| 942 | |
| 943 | /* Arg token is not digits => try it as a variable name |
| 944 | Find the next token (everything up to end or next whitespace). */ |
| 945 | |
| 946 | if (**argptr == '$') /* May be a convenience variable. */ |
| 947 | /* One or two $ chars possible. */ |
| 948 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); |
| 949 | else if (is_quoted) |
| 950 | { |
| 951 | p = end_quote; |
| 952 | if (p[-1] != '\'') |
| 953 | error (_("Unmatched single quote.")); |
| 954 | } |
| 955 | else if (is_objc_method) |
| 956 | { |
| 957 | /* allow word separators in method names for Obj-C. */ |
| 958 | p = skip_quoted_chars (*argptr, NULL, ""); |
| 959 | } |
| 960 | else |
| 961 | { |
| 962 | p = skip_quoted (*argptr); |
| 963 | } |
| 964 | |
| 965 | /* Keep any important naming information. */ |
| 966 | p = keep_name_info (p); |
| 967 | |
| 968 | copy = (char *) alloca (p - *argptr + 1); |
| 969 | memcpy (copy, *argptr, p - *argptr); |
| 970 | copy[p - *argptr] = '\0'; |
| 971 | if (p != *argptr |
| 972 | && copy[0] |
| 973 | && copy[0] == copy[p - *argptr - 1] |
| 974 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
| 975 | { |
| 976 | copy[p - *argptr - 1] = '\0'; |
| 977 | copy++; |
| 978 | } |
| 979 | else if (is_quoted) |
| 980 | copy[p - *argptr - 1] = '\0'; |
| 981 | while (*p == ' ' || *p == '\t') |
| 982 | p++; |
| 983 | *argptr = p; |
| 984 | |
| 985 | /* If it starts with $: may be a legitimate variable or routine name |
| 986 | (e.g. HP-UX millicode routines such as $$dyncall), or it may |
| 987 | be history value, or it may be a convenience variable. */ |
| 988 | |
| 989 | if (*copy == '$' && function_symbol == NULL) |
| 990 | return decode_dollar (copy, funfirstline, default_symtab, |
| 991 | canonical, file_symtab); |
| 992 | |
| 993 | /* Try the token as a label, but only if no file was specified, |
| 994 | because we can only really find labels in the current scope. */ |
| 995 | |
| 996 | if (!file_symtab) |
| 997 | { |
| 998 | struct symtabs_and_lines label_result; |
| 999 | if (decode_label (function_symbol, copy, canonical, &label_result)) |
| 1000 | return label_result; |
| 1001 | } |
| 1002 | |
| 1003 | if (function_symbol) |
| 1004 | throw_exception (file_exception); |
| 1005 | |
| 1006 | /* Look up that token as a variable. |
| 1007 | If file specified, use that file's per-file block to start with. */ |
| 1008 | |
| 1009 | return decode_variable (copy, funfirstline, canonical, file_symtab); |
| 1010 | } |
| 1011 | |
| 1012 | \f |
| 1013 | |
| 1014 | /* Now, more helper functions for decode_line_1. Some conventions |
| 1015 | that these functions follow: |
| 1016 | |
| 1017 | Decode_line_1 typically passes along some of its arguments or local |
| 1018 | variables to the subfunctions. It passes the variables by |
| 1019 | reference if they are modified by the subfunction, and by value |
| 1020 | otherwise. |
| 1021 | |
| 1022 | Some of the functions have side effects that don't arise from |
| 1023 | variables that are passed by reference. In particular, if a |
| 1024 | function is passed ARGPTR as an argument, it modifies what ARGPTR |
| 1025 | points to; typically, it advances *ARGPTR past whatever substring |
| 1026 | it has just looked at. (If it doesn't modify *ARGPTR, then the |
| 1027 | function gets passed *ARGPTR instead, which is then called ARG.) |
| 1028 | Also, functions that return a struct symtabs_and_lines may modify |
| 1029 | CANONICAL, as in the description of decode_line_1. |
| 1030 | |
| 1031 | If a function returns a struct symtabs_and_lines, then that struct |
| 1032 | will immediately make its way up the call chain to be returned by |
| 1033 | decode_line_1. In particular, all of the functions decode_XXX |
| 1034 | calculate the appropriate struct symtabs_and_lines, under the |
| 1035 | assumption that their argument is of the form XXX. */ |
| 1036 | |
| 1037 | /* First, some functions to initialize stuff at the beggining of the |
| 1038 | function. */ |
| 1039 | |
| 1040 | static void |
| 1041 | initialize_defaults (struct symtab **default_symtab, int *default_line) |
| 1042 | { |
| 1043 | if (*default_symtab == 0) |
| 1044 | { |
| 1045 | /* Use whatever we have for the default source line. We don't use |
| 1046 | get_current_or_default_symtab_and_line as it can recurse and call |
| 1047 | us back! */ |
| 1048 | struct symtab_and_line cursal = |
| 1049 | get_current_source_symtab_and_line (); |
| 1050 | |
| 1051 | *default_symtab = cursal.symtab; |
| 1052 | *default_line = cursal.line; |
| 1053 | } |
| 1054 | } |
| 1055 | |
| 1056 | \f |
| 1057 | |
| 1058 | /* Decode arg of the form *PC. */ |
| 1059 | |
| 1060 | static struct symtabs_and_lines |
| 1061 | decode_indirect (char **argptr) |
| 1062 | { |
| 1063 | struct symtabs_and_lines values; |
| 1064 | CORE_ADDR pc; |
| 1065 | |
| 1066 | (*argptr)++; |
| 1067 | pc = value_as_address (parse_to_comma_and_eval (argptr)); |
| 1068 | |
| 1069 | values.sals = (struct symtab_and_line *) |
| 1070 | xmalloc (sizeof (struct symtab_and_line)); |
| 1071 | |
| 1072 | values.nelts = 1; |
| 1073 | values.sals[0] = find_pc_line (pc, 0); |
| 1074 | values.sals[0].pc = pc; |
| 1075 | values.sals[0].section = find_pc_overlay (pc); |
| 1076 | values.sals[0].explicit_pc = 1; |
| 1077 | |
| 1078 | return values; |
| 1079 | } |
| 1080 | |
| 1081 | \f |
| 1082 | |
| 1083 | /* Locate the first half of the linespec, ending in a colon, period, |
| 1084 | or whitespace. (More or less.) Also, check to see if *ARGPTR is |
| 1085 | enclosed in double quotes; if so, set is_quote_enclosed, advance |
| 1086 | ARGPTR past that and zero out the trailing double quote. |
| 1087 | If ARGPTR is just a simple name like "main", p will point to "" |
| 1088 | at the end. */ |
| 1089 | |
| 1090 | static char * |
| 1091 | locate_first_half (char **argptr, int *is_quote_enclosed) |
| 1092 | { |
| 1093 | char *ii; |
| 1094 | char *p, *p1; |
| 1095 | int has_comma; |
| 1096 | |
| 1097 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM |
| 1098 | and we must isolate the first half. Outer layers will call again later |
| 1099 | for the second half. |
| 1100 | |
| 1101 | Don't count commas that appear in argument lists of overloaded |
| 1102 | functions, or in quoted strings. It's stupid to go to this much |
| 1103 | trouble when the rest of the function is such an obvious roach hotel. */ |
| 1104 | ii = find_toplevel_char (*argptr, ','); |
| 1105 | has_comma = (ii != 0); |
| 1106 | |
| 1107 | /* Temporarily zap out second half to not confuse the code below. |
| 1108 | This is undone below. Do not change ii!! */ |
| 1109 | if (has_comma) |
| 1110 | { |
| 1111 | *ii = '\0'; |
| 1112 | } |
| 1113 | |
| 1114 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION. May also be |
| 1115 | CLASS::MEMBER, or NAMESPACE::NAME. Look for ':', but ignore |
| 1116 | inside of <>. */ |
| 1117 | |
| 1118 | p = *argptr; |
| 1119 | if (p[0] == '"') |
| 1120 | { |
| 1121 | *is_quote_enclosed = 1; |
| 1122 | (*argptr)++; |
| 1123 | p++; |
| 1124 | } |
| 1125 | else |
| 1126 | { |
| 1127 | *is_quote_enclosed = 0; |
| 1128 | if (strchr (get_gdb_completer_quote_characters (), *p)) |
| 1129 | { |
| 1130 | ++(*argptr); |
| 1131 | ++p; |
| 1132 | } |
| 1133 | } |
| 1134 | for (; *p; p++) |
| 1135 | { |
| 1136 | if (p[0] == '<') |
| 1137 | { |
| 1138 | char *temp_end = find_template_name_end (p); |
| 1139 | |
| 1140 | if (!temp_end) |
| 1141 | error (_("malformed template specification in command")); |
| 1142 | p = temp_end; |
| 1143 | } |
| 1144 | |
| 1145 | if (p[0] == '(') |
| 1146 | p = find_method_overload_end (p); |
| 1147 | |
| 1148 | /* Check for a colon and a plus or minus and a [ (which |
| 1149 | indicates an Objective-C method). */ |
| 1150 | if (is_objc_method_format (p)) |
| 1151 | { |
| 1152 | break; |
| 1153 | } |
| 1154 | /* Check for the end of the first half of the linespec. End of |
| 1155 | line, a tab, a double colon or the last single colon, or a |
| 1156 | space. But if enclosed in double quotes we do not break on |
| 1157 | enclosed spaces. */ |
| 1158 | if (!*p |
| 1159 | || p[0] == '\t' |
| 1160 | || ((p[0] == ':') |
| 1161 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) |
| 1162 | || ((p[0] == ' ') && !*is_quote_enclosed)) |
| 1163 | break; |
| 1164 | if (p[0] == '.' && strchr (p, ':') == NULL) |
| 1165 | { |
| 1166 | /* Java qualified method. Find the *last* '.', since the |
| 1167 | others are package qualifiers. Stop at any open parenthesis |
| 1168 | which might provide overload information. */ |
| 1169 | for (p1 = p; *p1 && *p1 != '('; p1++) |
| 1170 | { |
| 1171 | if (*p1 == '.') |
| 1172 | p = p1; |
| 1173 | } |
| 1174 | break; |
| 1175 | } |
| 1176 | } |
| 1177 | while (p[0] == ' ' || p[0] == '\t') |
| 1178 | p++; |
| 1179 | |
| 1180 | /* If the closing double quote was left at the end, remove it. */ |
| 1181 | if (*is_quote_enclosed) |
| 1182 | { |
| 1183 | char *closing_quote = strchr (p - 1, '"'); |
| 1184 | |
| 1185 | if (closing_quote && closing_quote[1] == '\0') |
| 1186 | *closing_quote = '\0'; |
| 1187 | } |
| 1188 | |
| 1189 | /* Now that we've safely parsed the first half, put back ',' so |
| 1190 | outer layers can see it. */ |
| 1191 | if (has_comma) |
| 1192 | *ii = ','; |
| 1193 | |
| 1194 | return p; |
| 1195 | } |
| 1196 | |
| 1197 | \f |
| 1198 | |
| 1199 | /* Here's where we recognise an Objective-C Selector. An Objective C |
| 1200 | selector may be implemented by more than one class, therefore it |
| 1201 | may represent more than one method/function. This gives us a |
| 1202 | situation somewhat analogous to C++ overloading. If there's more |
| 1203 | than one method that could represent the selector, then use some of |
| 1204 | the existing C++ code to let the user choose one. */ |
| 1205 | |
| 1206 | struct symtabs_and_lines |
| 1207 | decode_objc (char **argptr, int funfirstline, struct symtab *file_symtab, |
| 1208 | struct linespec_result *canonical, char *saved_arg) |
| 1209 | { |
| 1210 | struct symtabs_and_lines values; |
| 1211 | struct symbol **sym_arr = NULL; |
| 1212 | struct symbol *sym = NULL; |
| 1213 | struct block *block = NULL; |
| 1214 | unsigned i1 = 0; |
| 1215 | unsigned i2 = 0; |
| 1216 | |
| 1217 | values.sals = NULL; |
| 1218 | values.nelts = 0; |
| 1219 | |
| 1220 | if (file_symtab != NULL) |
| 1221 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab), STATIC_BLOCK); |
| 1222 | else |
| 1223 | { |
| 1224 | enum language save_language; |
| 1225 | |
| 1226 | /* get_selected_block can change the current language when there is |
| 1227 | no selected frame yet. */ |
| 1228 | save_language = current_language->la_language; |
| 1229 | block = get_selected_block (0); |
| 1230 | set_language (save_language); |
| 1231 | } |
| 1232 | |
| 1233 | find_imps (file_symtab, block, *argptr, NULL, &i1, &i2); |
| 1234 | |
| 1235 | if (i1 > 0) |
| 1236 | { |
| 1237 | sym_arr = (struct symbol **) |
| 1238 | alloca ((i1 + 1) * sizeof (struct symbol *)); |
| 1239 | sym_arr[i1] = NULL; |
| 1240 | |
| 1241 | *argptr = find_imps (file_symtab, block, *argptr, sym_arr, &i1, &i2); |
| 1242 | } |
| 1243 | |
| 1244 | /* i1 now represents the TOTAL number of matches found. |
| 1245 | i2 represents how many HIGH-LEVEL (struct symbol) matches, |
| 1246 | which will come first in the sym_arr array. Any low-level |
| 1247 | (minimal_symbol) matches will follow those. */ |
| 1248 | |
| 1249 | if (i1 == 1) |
| 1250 | { |
| 1251 | if (i2 > 0) |
| 1252 | { |
| 1253 | /* Already a struct symbol. */ |
| 1254 | sym = sym_arr[0]; |
| 1255 | } |
| 1256 | else |
| 1257 | { |
| 1258 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (sym_arr[0])); |
| 1259 | if ((sym != NULL) && strcmp (SYMBOL_LINKAGE_NAME (sym_arr[0]), |
| 1260 | SYMBOL_LINKAGE_NAME (sym)) != 0) |
| 1261 | { |
| 1262 | warning (_("debugging symbol \"%s\" does " |
| 1263 | "not match selector; ignoring"), |
| 1264 | SYMBOL_LINKAGE_NAME (sym)); |
| 1265 | sym = NULL; |
| 1266 | } |
| 1267 | } |
| 1268 | |
| 1269 | values.sals = (struct symtab_and_line *) |
| 1270 | xmalloc (sizeof (struct symtab_and_line)); |
| 1271 | values.nelts = 1; |
| 1272 | |
| 1273 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) |
| 1274 | { |
| 1275 | /* Canonicalize this, so it remains resolved for dylib loads. */ |
| 1276 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
| 1277 | build_canonical_line_spec (values.sals, |
| 1278 | SYMBOL_NATURAL_NAME (sym), canonical); |
| 1279 | } |
| 1280 | else |
| 1281 | { |
| 1282 | /* The only match was a non-debuggable symbol, which might point |
| 1283 | to a function descriptor; resolve it to the actual code address |
| 1284 | instead. */ |
| 1285 | struct minimal_symbol *msymbol = (struct minimal_symbol *)sym_arr[0]; |
| 1286 | struct objfile *objfile = msymbol_objfile (msymbol); |
| 1287 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
| 1288 | CORE_ADDR pc = SYMBOL_VALUE_ADDRESS (msymbol); |
| 1289 | |
| 1290 | pc = gdbarch_convert_from_func_ptr_addr (gdbarch, pc, |
| 1291 | ¤t_target); |
| 1292 | |
| 1293 | init_sal (&values.sals[0]); |
| 1294 | values.sals[0].pc = pc; |
| 1295 | } |
| 1296 | return values; |
| 1297 | } |
| 1298 | |
| 1299 | if (i1 > 1) |
| 1300 | { |
| 1301 | /* More than one match. The user must choose one or more. */ |
| 1302 | return decode_line_2 (sym_arr, i2, funfirstline, canonical); |
| 1303 | } |
| 1304 | |
| 1305 | return values; |
| 1306 | } |
| 1307 | |
| 1308 | /* This handles C++ and Java compound data structures. P should point |
| 1309 | at the first component separator, i.e. double-colon or period. As |
| 1310 | an example, on entrance to this function we could have ARGPTR |
| 1311 | pointing to "AAA::inA::fun" and P pointing to "::inA::fun". */ |
| 1312 | |
| 1313 | static struct symtabs_and_lines |
| 1314 | decode_compound (char **argptr, int funfirstline, |
| 1315 | struct linespec_result *canonical, |
| 1316 | char *the_real_saved_arg, char *p) |
| 1317 | { |
| 1318 | struct symtabs_and_lines values; |
| 1319 | char *p2; |
| 1320 | char *saved_arg2 = *argptr; |
| 1321 | char *temp_end; |
| 1322 | struct symbol *sym; |
| 1323 | char *copy; |
| 1324 | struct symbol *sym_class; |
| 1325 | struct type *t; |
| 1326 | char *saved_java_argptr = NULL; |
| 1327 | char *saved_arg; |
| 1328 | |
| 1329 | /* If the user specified any completer quote characters in the input, |
| 1330 | strip them. They are superfluous. */ |
| 1331 | saved_arg = alloca (strlen (the_real_saved_arg) + 1); |
| 1332 | { |
| 1333 | char *dst = saved_arg; |
| 1334 | char *src = the_real_saved_arg; |
| 1335 | char *quotes = get_gdb_completer_quote_characters (); |
| 1336 | while (*src != '\0') |
| 1337 | { |
| 1338 | if (strchr (quotes, *src) == NULL) |
| 1339 | *dst++ = *src; |
| 1340 | ++src; |
| 1341 | } |
| 1342 | *dst = '\0'; |
| 1343 | } |
| 1344 | |
| 1345 | /* First check for "global" namespace specification, of the form |
| 1346 | "::foo". If found, skip over the colons and jump to normal |
| 1347 | symbol processing. I.e. the whole line specification starts with |
| 1348 | "::" (note the condition that *argptr == p). */ |
| 1349 | if (p[0] == ':' |
| 1350 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) |
| 1351 | saved_arg2 += 2; |
| 1352 | |
| 1353 | /* Given our example "AAA::inA::fun", we have two cases to consider: |
| 1354 | |
| 1355 | 1) AAA::inA is the name of a class. In that case, presumably it |
| 1356 | has a method called "fun"; we then look up that method using |
| 1357 | find_method. |
| 1358 | |
| 1359 | 2) AAA::inA isn't the name of a class. In that case, either the |
| 1360 | user made a typo, AAA::inA is the name of a namespace, or it is |
| 1361 | the name of a minimal symbol. |
| 1362 | We just look up AAA::inA::fun with lookup_symbol. If that fails, |
| 1363 | try lookup_minimal_symbol. |
| 1364 | |
| 1365 | Thus, our first task is to find everything before the last set of |
| 1366 | double-colons and figure out if it's the name of a class. So we |
| 1367 | first loop through all of the double-colons. */ |
| 1368 | |
| 1369 | p2 = p; /* Save for restart. */ |
| 1370 | |
| 1371 | /* This is very messy. Following the example above we have now the |
| 1372 | following pointers: |
| 1373 | p -> "::inA::fun" |
| 1374 | argptr -> "AAA::inA::fun |
| 1375 | saved_arg -> "AAA::inA::fun |
| 1376 | saved_arg2 -> "AAA::inA::fun |
| 1377 | p2 -> "::inA::fun". */ |
| 1378 | |
| 1379 | /* In the loop below, with these strings, we'll make 2 passes, each |
| 1380 | is marked in comments. */ |
| 1381 | |
| 1382 | while (1) |
| 1383 | { |
| 1384 | static char *break_characters = " \t("; |
| 1385 | |
| 1386 | /* Move pointer up to next possible class/namespace token. */ |
| 1387 | |
| 1388 | p = p2 + 1; /* Restart with old value +1. */ |
| 1389 | |
| 1390 | /* PASS1: at this point p2->"::inA::fun", so p->":inA::fun", |
| 1391 | i.e. if there is a double-colon, p will now point to the |
| 1392 | second colon. */ |
| 1393 | /* PASS2: p2->"::fun", p->":fun" */ |
| 1394 | |
| 1395 | /* Move pointer ahead to next double-colon. */ |
| 1396 | while (*p |
| 1397 | && strchr (break_characters, *p) == NULL |
| 1398 | && strchr (get_gdb_completer_quote_characters (), *p) == NULL) |
| 1399 | { |
| 1400 | if (current_language->la_language == language_cplus) |
| 1401 | p += cp_validate_operator (p); |
| 1402 | |
| 1403 | if (p[0] == '<') |
| 1404 | { |
| 1405 | temp_end = find_template_name_end (p); |
| 1406 | if (!temp_end) |
| 1407 | error (_("malformed template specification in command")); |
| 1408 | p = temp_end; |
| 1409 | } |
| 1410 | /* Note that, since, at the start of this loop, p would be |
| 1411 | pointing to the second colon in a double-colon, we only |
| 1412 | satisfy the condition below if there is another |
| 1413 | double-colon to the right (after). I.e. there is another |
| 1414 | component that can be a class or a namespace. I.e, if at |
| 1415 | the beginning of this loop (PASS1), we had |
| 1416 | p->":inA::fun", we'll trigger this when p has been |
| 1417 | advanced to point to "::fun". */ |
| 1418 | /* PASS2: we will not trigger this. */ |
| 1419 | else if ((p[0] == ':') && (p[1] == ':')) |
| 1420 | break; /* Found double-colon. */ |
| 1421 | else |
| 1422 | { |
| 1423 | /* PASS2: We'll keep getting here, until P points to one of the |
| 1424 | break characters, at which point we exit this loop. */ |
| 1425 | if (*p && strchr (break_characters, *p) == NULL) |
| 1426 | p++; |
| 1427 | } |
| 1428 | } |
| 1429 | |
| 1430 | if (*p != ':') |
| 1431 | break; /* Out of the while (1). This would happen |
| 1432 | for instance if we have looked up |
| 1433 | unsuccessfully all the components of the |
| 1434 | string, and p->""(PASS2). */ |
| 1435 | |
| 1436 | /* We get here if p points to one of the break characters or "" (i.e., |
| 1437 | string ended). */ |
| 1438 | /* Save restart for next time around. */ |
| 1439 | p2 = p; |
| 1440 | /* Restore argptr as it was on entry to this function. */ |
| 1441 | *argptr = saved_arg2; |
| 1442 | /* PASS1: at this point p->"::fun" argptr->"AAA::inA::fun", |
| 1443 | p2->"::fun". */ |
| 1444 | |
| 1445 | /* All ready for next pass through the loop. */ |
| 1446 | } /* while (1) */ |
| 1447 | |
| 1448 | |
| 1449 | /* Start of lookup in the symbol tables. */ |
| 1450 | |
| 1451 | /* Lookup in the symbol table the substring between argptr and |
| 1452 | p. Note, this call changes the value of argptr. */ |
| 1453 | /* Before the call, argptr->"AAA::inA::fun", |
| 1454 | p->"", p2->"::fun". After the call: argptr->"fun", p, p2 |
| 1455 | unchanged. */ |
| 1456 | sym_class = lookup_prefix_sym (argptr, p2); |
| 1457 | |
| 1458 | /* If sym_class has been found, and if "AAA::inA" is a class, then |
| 1459 | we're in case 1 above. So we look up "fun" as a method of that |
| 1460 | class. */ |
| 1461 | if (sym_class && |
| 1462 | (t = check_typedef (SYMBOL_TYPE (sym_class)), |
| 1463 | (TYPE_CODE (t) == TYPE_CODE_STRUCT |
| 1464 | || TYPE_CODE (t) == TYPE_CODE_UNION))) |
| 1465 | { |
| 1466 | /* Arg token is not digits => try it as a function name. |
| 1467 | Find the next token (everything up to end or next |
| 1468 | blank). */ |
| 1469 | if (**argptr |
| 1470 | && strchr (get_gdb_completer_quote_characters (), |
| 1471 | **argptr) != NULL) |
| 1472 | { |
| 1473 | p = skip_quoted (*argptr); |
| 1474 | *argptr = *argptr + 1; |
| 1475 | } |
| 1476 | else |
| 1477 | { |
| 1478 | /* At this point argptr->"fun". */ |
| 1479 | char *a; |
| 1480 | |
| 1481 | p = *argptr; |
| 1482 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':' |
| 1483 | && *p != '(') |
| 1484 | p++; |
| 1485 | /* At this point p->"". String ended. */ |
| 1486 | /* Nope, C++ operators could have spaces in them |
| 1487 | ("foo::operator <" or "foo::operator delete []"). |
| 1488 | I apologize, this is a bit hacky... */ |
| 1489 | if (current_language->la_language == language_cplus |
| 1490 | && *p == ' ' && p - 8 - *argptr + 1 > 0) |
| 1491 | { |
| 1492 | /* The above loop has already swallowed "operator". */ |
| 1493 | p += cp_validate_operator (p - 8) - 8; |
| 1494 | } |
| 1495 | |
| 1496 | /* Keep any important naming information. */ |
| 1497 | p = keep_name_info (p); |
| 1498 | |
| 1499 | /* Java may append typenames, so assume that if there is |
| 1500 | anything else left in *argptr, it must be a typename. */ |
| 1501 | if (*p && current_language->la_language == language_java) |
| 1502 | { |
| 1503 | struct type *type; |
| 1504 | |
| 1505 | p2 = p; |
| 1506 | while (*p2) |
| 1507 | ++p2; |
| 1508 | copy = (char *) alloca (p2 - p + 1); |
| 1509 | memcpy (copy, p, p2 - p); |
| 1510 | copy[p2 - p] = '\0'; |
| 1511 | type = lookup_typename (current_language, get_current_arch (), |
| 1512 | copy, NULL, 1); |
| 1513 | if (type != NULL) |
| 1514 | { |
| 1515 | /* Save the location of this just in case this |
| 1516 | method/type combination isn't actually defined. |
| 1517 | It will be checked later. */ |
| 1518 | saved_java_argptr = p; |
| 1519 | p = p2; |
| 1520 | } |
| 1521 | } |
| 1522 | } |
| 1523 | |
| 1524 | /* Allocate our own copy of the substring between argptr and |
| 1525 | p. */ |
| 1526 | copy = (char *) alloca (p - *argptr + 1); |
| 1527 | memcpy (copy, *argptr, p - *argptr); |
| 1528 | copy[p - *argptr] = '\0'; |
| 1529 | if (p != *argptr |
| 1530 | && copy[p - *argptr - 1] |
| 1531 | && strchr (get_gdb_completer_quote_characters (), |
| 1532 | copy[p - *argptr - 1]) != NULL) |
| 1533 | copy[p - *argptr - 1] = '\0'; |
| 1534 | |
| 1535 | /* At this point copy->"fun", p->"". */ |
| 1536 | |
| 1537 | /* No line number may be specified. */ |
| 1538 | while (*p == ' ' || *p == '\t') |
| 1539 | p++; |
| 1540 | *argptr = p; |
| 1541 | /* At this point arptr->"". */ |
| 1542 | |
| 1543 | /* Look for copy as a method of sym_class. */ |
| 1544 | /* At this point copy->"fun", sym_class is "AAA:inA", |
| 1545 | saved_arg->"AAA::inA::fun". This concludes the scanning of |
| 1546 | the string for possible components matches. If we find it |
| 1547 | here, we return. If not, and we are at the and of the string, |
| 1548 | we'll lookup the whole string in the symbol tables. */ |
| 1549 | |
| 1550 | values = find_method (funfirstline, canonical, saved_arg, |
| 1551 | copy, t, sym_class); |
| 1552 | if (saved_java_argptr != NULL && values.nelts == 1) |
| 1553 | { |
| 1554 | /* The user specified a specific return type for a java method. |
| 1555 | Double-check that it really is the one the user specified. |
| 1556 | [This is a necessary evil because strcmp_iw_ordered stops |
| 1557 | comparisons too prematurely.] */ |
| 1558 | sym = find_pc_sect_function (values.sals[0].pc, |
| 1559 | values.sals[0].section); |
| 1560 | /* We just found a SAL, we had better be able to go backwards! */ |
| 1561 | gdb_assert (sym != NULL); |
| 1562 | if (strcmp_iw (SYMBOL_LINKAGE_NAME (sym), saved_arg) != 0) |
| 1563 | { |
| 1564 | xfree (values.sals); |
| 1565 | error (_("the class `%s' does not have " |
| 1566 | "any method instance named %s"), |
| 1567 | SYMBOL_PRINT_NAME (sym_class), copy); |
| 1568 | } |
| 1569 | } |
| 1570 | return values; |
| 1571 | } /* End if symbol found. */ |
| 1572 | |
| 1573 | |
| 1574 | /* We couldn't find a class, so we're in case 2 above. We check the |
| 1575 | entire name as a symbol instead. */ |
| 1576 | |
| 1577 | if (current_language->la_language == language_cplus |
| 1578 | || current_language->la_language == language_java) |
| 1579 | p = keep_name_info (p); |
| 1580 | |
| 1581 | copy = (char *) alloca (p - saved_arg2 + 1); |
| 1582 | memcpy (copy, saved_arg2, p - saved_arg2); |
| 1583 | /* Note: if is_quoted should be true, we snuff out quote here |
| 1584 | anyway. */ |
| 1585 | copy[p - saved_arg2] = '\000'; |
| 1586 | /* Set argptr to skip over the name. */ |
| 1587 | *argptr = (*p == '\'') ? p + 1 : p; |
| 1588 | |
| 1589 | /* Look up entire name. */ |
| 1590 | sym = lookup_symbol (copy, get_selected_block (0), VAR_DOMAIN, 0); |
| 1591 | if (sym) |
| 1592 | return symbol_found (funfirstline, canonical, copy, sym, NULL, NULL); |
| 1593 | else |
| 1594 | { |
| 1595 | struct minimal_symbol *msym; |
| 1596 | |
| 1597 | /* Couldn't find any interpretation as classes/namespaces. As a last |
| 1598 | resort, try the minimal symbol tables. */ |
| 1599 | msym = lookup_minimal_symbol (copy, NULL, NULL); |
| 1600 | if (msym != NULL) |
| 1601 | return minsym_found (funfirstline, msym); |
| 1602 | } |
| 1603 | |
| 1604 | /* Couldn't find a minimal symbol, either, so give up. */ |
| 1605 | cplusplus_error (the_real_saved_arg, |
| 1606 | "Can't find member of namespace, " |
| 1607 | "class, struct, or union named \"%s\"\n", |
| 1608 | copy); |
| 1609 | } |
| 1610 | |
| 1611 | /* Next come some helper functions for decode_compound. */ |
| 1612 | |
| 1613 | /* Return the symbol corresponding to the substring of *ARGPTR ending |
| 1614 | at P, allowing whitespace. Also, advance *ARGPTR past the symbol |
| 1615 | name in question, the compound object separator ("::" or "."), and |
| 1616 | whitespace. Note that *ARGPTR is changed whether or not the |
| 1617 | lookup_symbol call finds anything (i.e we return NULL). As an |
| 1618 | example, say ARGPTR is "AAA::inA::fun" and P is "::inA::fun". */ |
| 1619 | |
| 1620 | static struct symbol * |
| 1621 | lookup_prefix_sym (char **argptr, char *p) |
| 1622 | { |
| 1623 | char *p1; |
| 1624 | char *copy; |
| 1625 | struct symbol *sym; |
| 1626 | |
| 1627 | /* Extract the class name. */ |
| 1628 | p1 = p; |
| 1629 | while (p != *argptr && p[-1] == ' ') |
| 1630 | --p; |
| 1631 | copy = (char *) alloca (p - *argptr + 1); |
| 1632 | memcpy (copy, *argptr, p - *argptr); |
| 1633 | copy[p - *argptr] = 0; |
| 1634 | |
| 1635 | /* Discard the class name from the argptr. */ |
| 1636 | p = p1 + (p1[0] == ':' ? 2 : 1); |
| 1637 | while (*p == ' ' || *p == '\t') |
| 1638 | p++; |
| 1639 | *argptr = p; |
| 1640 | |
| 1641 | /* At this point p1->"::inA::fun", p->"inA::fun" copy->"AAA", |
| 1642 | argptr->"inA::fun". */ |
| 1643 | |
| 1644 | sym = lookup_symbol (copy, get_selected_block (0), STRUCT_DOMAIN, 0); |
| 1645 | if (sym == NULL) |
| 1646 | { |
| 1647 | /* Typedefs are in VAR_DOMAIN so the above symbol lookup will |
| 1648 | fail when the user attempts to lookup a method of a class |
| 1649 | via a typedef'd name (NOT via the class's name, which is already |
| 1650 | handled in symbol_matches_domain). So try the lookup again |
| 1651 | using VAR_DOMAIN (where typedefs live) and double-check that we |
| 1652 | found a struct/class type. */ |
| 1653 | struct symbol *s = lookup_symbol (copy, 0, VAR_DOMAIN, 0); |
| 1654 | |
| 1655 | if (s != NULL) |
| 1656 | { |
| 1657 | struct type *t = SYMBOL_TYPE (s); |
| 1658 | |
| 1659 | CHECK_TYPEDEF (t); |
| 1660 | if (TYPE_CODE (t) == TYPE_CODE_STRUCT) |
| 1661 | return s; |
| 1662 | } |
| 1663 | } |
| 1664 | |
| 1665 | return sym; |
| 1666 | } |
| 1667 | |
| 1668 | /* This finds the method COPY in the class whose type is T and whose |
| 1669 | symbol is SYM_CLASS. */ |
| 1670 | |
| 1671 | static struct symtabs_and_lines |
| 1672 | find_method (int funfirstline, struct linespec_result *canonical, |
| 1673 | char *saved_arg, |
| 1674 | char *copy, struct type *t, struct symbol *sym_class) |
| 1675 | { |
| 1676 | struct symtabs_and_lines values; |
| 1677 | struct symbol *sym = NULL; |
| 1678 | int i1; /* Counter for the symbol array. */ |
| 1679 | struct symbol **sym_arr = alloca (total_number_of_methods (t) |
| 1680 | * sizeof (struct symbol *)); |
| 1681 | |
| 1682 | /* Find all methods with a matching name, and put them in |
| 1683 | sym_arr. */ |
| 1684 | |
| 1685 | i1 = find_methods (t, copy, SYMBOL_LANGUAGE (sym_class), sym_arr); |
| 1686 | |
| 1687 | if (i1 == 1) |
| 1688 | { |
| 1689 | /* There is exactly one field with that name. */ |
| 1690 | sym = sym_arr[0]; |
| 1691 | |
| 1692 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) |
| 1693 | { |
| 1694 | values.sals = (struct symtab_and_line *) |
| 1695 | xmalloc (sizeof (struct symtab_and_line)); |
| 1696 | values.nelts = 1; |
| 1697 | values.sals[0] = find_function_start_sal (sym, |
| 1698 | funfirstline); |
| 1699 | } |
| 1700 | else |
| 1701 | { |
| 1702 | values.sals = NULL; |
| 1703 | values.nelts = 0; |
| 1704 | } |
| 1705 | return values; |
| 1706 | } |
| 1707 | if (i1 > 0) |
| 1708 | { |
| 1709 | /* If we were given a specific overload instance, use that |
| 1710 | (or error if no matches were found). Otherwise ask the user |
| 1711 | which one to use. */ |
| 1712 | if (strchr (copy, '(')) |
| 1713 | { |
| 1714 | int i; |
| 1715 | char *name; |
| 1716 | char *canon; |
| 1717 | struct cleanup *cleanup; |
| 1718 | |
| 1719 | /* Construct the proper search name based on SYM_CLASS and COPY. |
| 1720 | SAVED_ARG may contain a valid name, but that name might not be |
| 1721 | what is actually stored in the symbol table. For example, |
| 1722 | if SAVED_ARG (and SYM_CLASS) were found via an import |
| 1723 | ("using namespace" in C++), then the physname of |
| 1724 | SYM_CLASS ("A::myclass") may not be the same as SAVED_ARG |
| 1725 | ("myclass"). */ |
| 1726 | name = xmalloc (strlen (SYMBOL_NATURAL_NAME (sym_class)) |
| 1727 | + 2 /* "::" */ + strlen (copy) + 1); |
| 1728 | strcpy (name, SYMBOL_NATURAL_NAME (sym_class)); |
| 1729 | strcat (name, "::"); |
| 1730 | strcat (name, copy); |
| 1731 | canon = cp_canonicalize_string (name); |
| 1732 | if (canon != NULL) |
| 1733 | { |
| 1734 | xfree (name); |
| 1735 | name = canon; |
| 1736 | } |
| 1737 | cleanup = make_cleanup (xfree, name); |
| 1738 | |
| 1739 | for (i = 0; i < i1; ++i) |
| 1740 | { |
| 1741 | if (strcmp_iw (name, SYMBOL_LINKAGE_NAME (sym_arr[i])) == 0) |
| 1742 | { |
| 1743 | values.sals = (struct symtab_and_line *) |
| 1744 | xmalloc (sizeof (struct symtab_and_line)); |
| 1745 | values.nelts = 1; |
| 1746 | values.sals[0] = find_function_start_sal (sym_arr[i], |
| 1747 | funfirstline); |
| 1748 | do_cleanups (cleanup); |
| 1749 | return values; |
| 1750 | } |
| 1751 | } |
| 1752 | |
| 1753 | error (_("the class `%s' does not have " |
| 1754 | "any method instance named %s"), |
| 1755 | SYMBOL_PRINT_NAME (sym_class), copy); |
| 1756 | } |
| 1757 | |
| 1758 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); |
| 1759 | } |
| 1760 | else |
| 1761 | { |
| 1762 | if (copy[0] == '~') |
| 1763 | cplusplus_error (saved_arg, |
| 1764 | "the class `%s' does not have destructor defined\n", |
| 1765 | SYMBOL_PRINT_NAME (sym_class)); |
| 1766 | else |
| 1767 | cplusplus_error (saved_arg, |
| 1768 | "the class %s does not have any method named %s\n", |
| 1769 | SYMBOL_PRINT_NAME (sym_class), copy); |
| 1770 | } |
| 1771 | } |
| 1772 | |
| 1773 | \f |
| 1774 | |
| 1775 | /* Return the symtab associated to the filename given by the substring |
| 1776 | of *ARGPTR ending at P, and advance ARGPTR past that filename. */ |
| 1777 | |
| 1778 | static struct symtab * |
| 1779 | symtab_from_filename (char **argptr, char *p, int is_quote_enclosed) |
| 1780 | { |
| 1781 | char *p1; |
| 1782 | char *copy; |
| 1783 | struct symtab *file_symtab; |
| 1784 | |
| 1785 | p1 = p; |
| 1786 | while (p != *argptr && p[-1] == ' ') |
| 1787 | --p; |
| 1788 | if ((*p == '"') && is_quote_enclosed) |
| 1789 | --p; |
| 1790 | copy = (char *) alloca (p - *argptr + 1); |
| 1791 | memcpy (copy, *argptr, p - *argptr); |
| 1792 | /* It may have the ending quote right after the file name. */ |
| 1793 | if ((is_quote_enclosed && copy[p - *argptr - 1] == '"') |
| 1794 | || copy[p - *argptr - 1] == '\'') |
| 1795 | copy[p - *argptr - 1] = 0; |
| 1796 | else |
| 1797 | copy[p - *argptr] = 0; |
| 1798 | |
| 1799 | /* Find that file's data. */ |
| 1800 | file_symtab = lookup_symtab (copy); |
| 1801 | if (file_symtab == 0) |
| 1802 | { |
| 1803 | if (!have_full_symbols () && !have_partial_symbols ()) |
| 1804 | throw_error (NOT_FOUND_ERROR, |
| 1805 | _("No symbol table is loaded. " |
| 1806 | "Use the \"file\" command.")); |
| 1807 | throw_error (NOT_FOUND_ERROR, _("No source file named %s."), copy); |
| 1808 | } |
| 1809 | |
| 1810 | /* Discard the file name from the arg. */ |
| 1811 | p = p1 + 1; |
| 1812 | while (*p == ' ' || *p == '\t') |
| 1813 | p++; |
| 1814 | *argptr = p; |
| 1815 | |
| 1816 | return file_symtab; |
| 1817 | } |
| 1818 | |
| 1819 | /* Look up a function symbol in *ARGPTR. If found, advance *ARGPTR |
| 1820 | and return the symbol. If not found, return NULL. */ |
| 1821 | |
| 1822 | static struct symbol * |
| 1823 | find_function_symbol (char **argptr, char *p, int is_quote_enclosed) |
| 1824 | { |
| 1825 | char *p1; |
| 1826 | char *copy; |
| 1827 | struct symbol *function_symbol; |
| 1828 | |
| 1829 | p1 = p; |
| 1830 | while (p != *argptr && p[-1] == ' ') |
| 1831 | --p; |
| 1832 | if ((*p == '"') && is_quote_enclosed) |
| 1833 | --p; |
| 1834 | copy = (char *) alloca (p - *argptr + 1); |
| 1835 | memcpy (copy, *argptr, p - *argptr); |
| 1836 | /* It may have the ending quote right after the file name. */ |
| 1837 | if ((is_quote_enclosed && copy[p - *argptr - 1] == '"') |
| 1838 | || copy[p - *argptr - 1] == '\'') |
| 1839 | copy[p - *argptr - 1] = 0; |
| 1840 | else |
| 1841 | copy[p - *argptr] = 0; |
| 1842 | |
| 1843 | function_symbol = lookup_symbol (copy, get_selected_block (0), |
| 1844 | VAR_DOMAIN, 0); |
| 1845 | if (!function_symbol || SYMBOL_CLASS (function_symbol) != LOC_BLOCK) |
| 1846 | return NULL; |
| 1847 | |
| 1848 | /* Discard the file name from the arg. */ |
| 1849 | p = p1 + 1; |
| 1850 | while (*p == ' ' || *p == '\t') |
| 1851 | p++; |
| 1852 | *argptr = p; |
| 1853 | |
| 1854 | return function_symbol; |
| 1855 | } |
| 1856 | |
| 1857 | \f |
| 1858 | |
| 1859 | /* This decodes a line where the argument is all digits (possibly |
| 1860 | preceded by a sign). Q should point to the end of those digits; |
| 1861 | the other arguments are as usual. */ |
| 1862 | |
| 1863 | static struct symtabs_and_lines |
| 1864 | decode_all_digits (char **argptr, struct symtab *default_symtab, |
| 1865 | int default_line, struct linespec_result *canonical, |
| 1866 | struct symtab *file_symtab, char *q) |
| 1867 | |
| 1868 | { |
| 1869 | struct symtabs_and_lines values; |
| 1870 | struct symtab_and_line val; |
| 1871 | |
| 1872 | enum sign |
| 1873 | { |
| 1874 | none, plus, minus |
| 1875 | } |
| 1876 | sign = none; |
| 1877 | |
| 1878 | /* We might need a canonical line spec if no file was specified. */ |
| 1879 | int need_canonical = (file_symtab == NULL) ? 1 : 0; |
| 1880 | |
| 1881 | init_sal (&val); |
| 1882 | |
| 1883 | val.pspace = current_program_space; |
| 1884 | |
| 1885 | /* This is where we need to make sure that we have good defaults. |
| 1886 | We must guarantee that this section of code is never executed |
| 1887 | when we are called with just a function name, since |
| 1888 | set_default_source_symtab_and_line uses |
| 1889 | select_source_symtab that calls us with such an argument. */ |
| 1890 | |
| 1891 | if (file_symtab == 0 && default_symtab == 0) |
| 1892 | { |
| 1893 | /* Make sure we have at least a default source file. */ |
| 1894 | set_default_source_symtab_and_line (); |
| 1895 | initialize_defaults (&default_symtab, &default_line); |
| 1896 | } |
| 1897 | |
| 1898 | if (**argptr == '+') |
| 1899 | sign = plus, (*argptr)++; |
| 1900 | else if (**argptr == '-') |
| 1901 | sign = minus, (*argptr)++; |
| 1902 | val.line = atoi (*argptr); |
| 1903 | switch (sign) |
| 1904 | { |
| 1905 | case plus: |
| 1906 | if (q == *argptr) |
| 1907 | val.line = 5; |
| 1908 | if (file_symtab == 0) |
| 1909 | val.line = default_line + val.line; |
| 1910 | break; |
| 1911 | case minus: |
| 1912 | if (q == *argptr) |
| 1913 | val.line = 15; |
| 1914 | if (file_symtab == 0) |
| 1915 | val.line = default_line - val.line; |
| 1916 | else |
| 1917 | val.line = 1; |
| 1918 | break; |
| 1919 | case none: |
| 1920 | break; /* No need to adjust val.line. */ |
| 1921 | } |
| 1922 | |
| 1923 | while (*q == ' ' || *q == '\t') |
| 1924 | q++; |
| 1925 | *argptr = q; |
| 1926 | if (file_symtab == 0) |
| 1927 | file_symtab = default_symtab; |
| 1928 | |
| 1929 | /* It is possible that this source file has more than one symtab, |
| 1930 | and that the new line number specification has moved us from the |
| 1931 | default (in file_symtab) to a new one. */ |
| 1932 | val.symtab = find_line_symtab (file_symtab, val.line, NULL, NULL); |
| 1933 | if (val.symtab == 0) |
| 1934 | val.symtab = file_symtab; |
| 1935 | |
| 1936 | val.pspace = SYMTAB_PSPACE (val.symtab); |
| 1937 | val.pc = 0; |
| 1938 | values.sals = (struct symtab_and_line *) |
| 1939 | xmalloc (sizeof (struct symtab_and_line)); |
| 1940 | values.sals[0] = val; |
| 1941 | values.nelts = 1; |
| 1942 | if (need_canonical) |
| 1943 | build_canonical_line_spec (values.sals, NULL, canonical); |
| 1944 | values.sals[0].explicit_line = 1; |
| 1945 | return values; |
| 1946 | } |
| 1947 | |
| 1948 | \f |
| 1949 | |
| 1950 | /* Decode a linespec starting with a dollar sign. */ |
| 1951 | |
| 1952 | static struct symtabs_and_lines |
| 1953 | decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab, |
| 1954 | struct linespec_result *canonical, struct symtab *file_symtab) |
| 1955 | { |
| 1956 | LONGEST valx; |
| 1957 | int index = 0; |
| 1958 | int need_canonical = 0; |
| 1959 | struct symtabs_and_lines values; |
| 1960 | struct symtab_and_line val; |
| 1961 | char *p; |
| 1962 | struct symbol *sym; |
| 1963 | struct minimal_symbol *msymbol; |
| 1964 | |
| 1965 | p = (copy[1] == '$') ? copy + 2 : copy + 1; |
| 1966 | while (*p >= '0' && *p <= '9') |
| 1967 | p++; |
| 1968 | if (!*p) /* Reached end of token without hitting non-digit. */ |
| 1969 | { |
| 1970 | /* We have a value history reference. */ |
| 1971 | struct value *val_history; |
| 1972 | |
| 1973 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); |
| 1974 | val_history = access_value_history ((copy[1] == '$') ? -index : index); |
| 1975 | if (TYPE_CODE (value_type (val_history)) != TYPE_CODE_INT) |
| 1976 | error (_("History values used in line " |
| 1977 | "specs must have integer values.")); |
| 1978 | valx = value_as_long (val_history); |
| 1979 | } |
| 1980 | else |
| 1981 | { |
| 1982 | /* Not all digits -- may be user variable/function or a |
| 1983 | convenience variable. */ |
| 1984 | |
| 1985 | /* Look up entire name as a symbol first. */ |
| 1986 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0); |
| 1987 | file_symtab = (struct symtab *) NULL; |
| 1988 | need_canonical = 1; |
| 1989 | /* Symbol was found --> jump to normal symbol processing. */ |
| 1990 | if (sym) |
| 1991 | return symbol_found (funfirstline, canonical, copy, sym, NULL, NULL); |
| 1992 | |
| 1993 | /* If symbol was not found, look in minimal symbol tables. */ |
| 1994 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
| 1995 | /* Min symbol was found --> jump to minsym processing. */ |
| 1996 | if (msymbol) |
| 1997 | return minsym_found (funfirstline, msymbol); |
| 1998 | |
| 1999 | /* Not a user variable or function -- must be convenience variable. */ |
| 2000 | if (!get_internalvar_integer (lookup_internalvar (copy + 1), &valx)) |
| 2001 | error (_("Convenience variables used in line " |
| 2002 | "specs must have integer values.")); |
| 2003 | } |
| 2004 | |
| 2005 | init_sal (&val); |
| 2006 | |
| 2007 | /* Either history value or convenience value from above, in valx. */ |
| 2008 | val.symtab = file_symtab ? file_symtab : default_symtab; |
| 2009 | val.line = valx; |
| 2010 | val.pc = 0; |
| 2011 | val.pspace = current_program_space; |
| 2012 | |
| 2013 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); |
| 2014 | values.sals[0] = val; |
| 2015 | values.nelts = 1; |
| 2016 | |
| 2017 | if (need_canonical) |
| 2018 | build_canonical_line_spec (values.sals, NULL, canonical); |
| 2019 | |
| 2020 | return values; |
| 2021 | } |
| 2022 | |
| 2023 | \f |
| 2024 | |
| 2025 | /* A helper for decode_line_1 that tries to find a label. The label |
| 2026 | is searched for in the current block. |
| 2027 | FUNCTION_SYMBOL is the enclosing function; or NULL if none |
| 2028 | specified. |
| 2029 | COPY is the name of the label to find. |
| 2030 | CANONICAL is the same as the "canonical" argument to decode_line_1. |
| 2031 | RESULT is a pointer to a symtabs_and_lines structure which will be |
| 2032 | filled in on success. |
| 2033 | This function returns 1 if a label was found, 0 otherwise. */ |
| 2034 | |
| 2035 | static int |
| 2036 | decode_label (struct symbol *function_symbol, char *copy, |
| 2037 | struct linespec_result *canonical, |
| 2038 | struct symtabs_and_lines *result) |
| 2039 | { |
| 2040 | struct symbol *sym; |
| 2041 | struct block *block; |
| 2042 | |
| 2043 | if (function_symbol) |
| 2044 | block = SYMBOL_BLOCK_VALUE (function_symbol); |
| 2045 | else |
| 2046 | { |
| 2047 | block = get_selected_block (0); |
| 2048 | for (; |
| 2049 | block && !BLOCK_FUNCTION (block); |
| 2050 | block = BLOCK_SUPERBLOCK (block)) |
| 2051 | ; |
| 2052 | if (!block) |
| 2053 | return 0; |
| 2054 | function_symbol = BLOCK_FUNCTION (block); |
| 2055 | } |
| 2056 | |
| 2057 | sym = lookup_symbol (copy, block, LABEL_DOMAIN, 0); |
| 2058 | |
| 2059 | if (sym != NULL) |
| 2060 | *result = symbol_found (0, canonical, copy, sym, NULL, function_symbol); |
| 2061 | |
| 2062 | return sym != NULL; |
| 2063 | } |
| 2064 | |
| 2065 | /* Decode a linespec that's a variable. If FILE_SYMTAB is non-NULL, |
| 2066 | look in that symtab's static variables first. */ |
| 2067 | |
| 2068 | static struct symtabs_and_lines |
| 2069 | decode_variable (char *copy, int funfirstline, |
| 2070 | struct linespec_result *canonical, |
| 2071 | struct symtab *file_symtab) |
| 2072 | { |
| 2073 | struct symbol *sym; |
| 2074 | struct minimal_symbol *msymbol; |
| 2075 | |
| 2076 | sym = lookup_symbol (copy, |
| 2077 | (file_symtab |
| 2078 | ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab), |
| 2079 | STATIC_BLOCK) |
| 2080 | : get_selected_block (0)), |
| 2081 | VAR_DOMAIN, 0); |
| 2082 | |
| 2083 | if (sym != NULL) |
| 2084 | return symbol_found (funfirstline, canonical, copy, sym, file_symtab, NULL); |
| 2085 | |
| 2086 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
| 2087 | |
| 2088 | if (msymbol != NULL) |
| 2089 | return minsym_found (funfirstline, msymbol); |
| 2090 | |
| 2091 | if (!have_full_symbols () |
| 2092 | && !have_partial_symbols () |
| 2093 | && !have_minimal_symbols ()) |
| 2094 | throw_error (NOT_FOUND_ERROR, |
| 2095 | _("No symbol table is loaded. Use the \"file\" command.")); |
| 2096 | throw_error (NOT_FOUND_ERROR, _("Function \"%s\" not defined."), copy); |
| 2097 | } |
| 2098 | |
| 2099 | |
| 2100 | \f |
| 2101 | |
| 2102 | /* Now come some functions that are called from multiple places within |
| 2103 | decode_line_1. */ |
| 2104 | |
| 2105 | /* We've found a symbol SYM to associate with our linespec; build a |
| 2106 | corresponding struct symtabs_and_lines. */ |
| 2107 | |
| 2108 | static struct symtabs_and_lines |
| 2109 | symbol_found (int funfirstline, struct linespec_result *canonical, char *copy, |
| 2110 | struct symbol *sym, struct symtab *file_symtab, |
| 2111 | struct symbol *function_symbol) |
| 2112 | { |
| 2113 | struct symtabs_and_lines values; |
| 2114 | |
| 2115 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
| 2116 | { |
| 2117 | /* Arg is the name of a function. */ |
| 2118 | values.sals = (struct symtab_and_line *) |
| 2119 | xmalloc (sizeof (struct symtab_and_line)); |
| 2120 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
| 2121 | values.nelts = 1; |
| 2122 | |
| 2123 | /* Don't use the SYMBOL_LINE; if used at all it points to |
| 2124 | the line containing the parameters or thereabouts, not |
| 2125 | the first line of code. */ |
| 2126 | |
| 2127 | /* We might need a canonical line spec if it is a static |
| 2128 | function. */ |
| 2129 | if (file_symtab == 0) |
| 2130 | { |
| 2131 | struct blockvector *bv = BLOCKVECTOR (SYMBOL_SYMTAB (sym)); |
| 2132 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| 2133 | |
| 2134 | if (lookup_block_symbol (b, copy, VAR_DOMAIN) != NULL) |
| 2135 | build_canonical_line_spec (values.sals, copy, canonical); |
| 2136 | } |
| 2137 | return values; |
| 2138 | } |
| 2139 | else |
| 2140 | { |
| 2141 | if (SYMBOL_CLASS (sym) == LOC_LABEL && SYMBOL_VALUE_ADDRESS (sym) != 0) |
| 2142 | { |
| 2143 | /* We know its line number. */ |
| 2144 | values.sals = (struct symtab_and_line *) |
| 2145 | xmalloc (sizeof (struct symtab_and_line)); |
| 2146 | values.nelts = 1; |
| 2147 | init_sal (&values.sals[0]); |
| 2148 | values.sals[0].symtab = SYMBOL_SYMTAB (sym); |
| 2149 | values.sals[0].line = SYMBOL_LINE (sym); |
| 2150 | values.sals[0].pc = SYMBOL_VALUE_ADDRESS (sym); |
| 2151 | values.sals[0].pspace = SYMTAB_PSPACE (SYMBOL_SYMTAB (sym)); |
| 2152 | values.sals[0].explicit_pc = 1; |
| 2153 | |
| 2154 | if (canonical) |
| 2155 | { |
| 2156 | canonical->special_display = 1; |
| 2157 | canonical->canonical = xmalloc (sizeof (char *)); |
| 2158 | canonical->canonical[0] |
| 2159 | = xstrprintf ("%s:%s", |
| 2160 | SYMBOL_NATURAL_NAME (function_symbol), |
| 2161 | SYMBOL_NATURAL_NAME (sym)); |
| 2162 | } |
| 2163 | |
| 2164 | return values; |
| 2165 | } |
| 2166 | else if (funfirstline) |
| 2167 | error (_("\"%s\" is not a function"), copy); |
| 2168 | else if (SYMBOL_LINE (sym) != 0) |
| 2169 | { |
| 2170 | /* We know its line number. */ |
| 2171 | values.sals = (struct symtab_and_line *) |
| 2172 | xmalloc (sizeof (struct symtab_and_line)); |
| 2173 | values.nelts = 1; |
| 2174 | memset (&values.sals[0], 0, sizeof (values.sals[0])); |
| 2175 | values.sals[0].symtab = SYMBOL_SYMTAB (sym); |
| 2176 | values.sals[0].line = SYMBOL_LINE (sym); |
| 2177 | values.sals[0].pspace = SYMTAB_PSPACE (SYMBOL_SYMTAB (sym)); |
| 2178 | return values; |
| 2179 | } |
| 2180 | else |
| 2181 | /* This can happen if it is compiled with a compiler which doesn't |
| 2182 | put out line numbers for variables. */ |
| 2183 | /* FIXME: Shouldn't we just set .line and .symtab to zero |
| 2184 | and return? For example, "info line foo" could print |
| 2185 | the address. */ |
| 2186 | error (_("Line number not known for symbol \"%s\""), copy); |
| 2187 | } |
| 2188 | } |
| 2189 | |
| 2190 | /* We've found a minimal symbol MSYMBOL to associate with our |
| 2191 | linespec; build a corresponding struct symtabs_and_lines. */ |
| 2192 | |
| 2193 | static struct symtabs_and_lines |
| 2194 | minsym_found (int funfirstline, struct minimal_symbol *msymbol) |
| 2195 | { |
| 2196 | struct objfile *objfile = msymbol_objfile (msymbol); |
| 2197 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
| 2198 | struct symtabs_and_lines values; |
| 2199 | CORE_ADDR pc; |
| 2200 | |
| 2201 | values.sals = (struct symtab_and_line *) |
| 2202 | xmalloc (sizeof (struct symtab_and_line)); |
| 2203 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), |
| 2204 | (struct obj_section *) 0, 0); |
| 2205 | values.sals[0].section = SYMBOL_OBJ_SECTION (msymbol); |
| 2206 | |
| 2207 | /* The minimal symbol might point to a function descriptor; |
| 2208 | resolve it to the actual code address instead. */ |
| 2209 | pc = gdbarch_convert_from_func_ptr_addr (gdbarch, |
| 2210 | values.sals[0].pc, |
| 2211 | ¤t_target); |
| 2212 | if (pc != values.sals[0].pc) |
| 2213 | values.sals[0] = find_pc_sect_line (pc, NULL, 0); |
| 2214 | |
| 2215 | if (funfirstline) |
| 2216 | skip_prologue_sal (&values.sals[0]); |
| 2217 | |
| 2218 | values.nelts = 1; |
| 2219 | return values; |
| 2220 | } |
| 2221 | |
| 2222 | void |
| 2223 | init_linespec_result (struct linespec_result *lr) |
| 2224 | { |
| 2225 | memset (lr, 0, sizeof (*lr)); |
| 2226 | } |