| File: | src/gnu/usr.bin/binutils/gdb/linespec.c |
| Warning: | line 1092, column 3 Value stored to 'copy' is never read |
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| 1 | /* Parser for linespec for the GNU debugger, GDB. |
| 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 21 | Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include "symtab.h" |
| 25 | #include "frame.h" |
| 26 | #include "command.h" |
| 27 | #include "symfile.h" |
| 28 | #include "objfiles.h" |
| 29 | #include "source.h" |
| 30 | #include "demangle.h" |
| 31 | #include "value.h" |
| 32 | #include "completer.h" |
| 33 | #include "cp-abi.h" |
| 34 | #include "parser-defs.h" |
| 35 | #include "block.h" |
| 36 | #include "objc-lang.h" |
| 37 | #include "linespec.h" |
| 38 | |
| 39 | /* We share this one with symtab.c, but it is not exported widely. */ |
| 40 | |
| 41 | extern char *operator_chars (char *, char **); |
| 42 | |
| 43 | /* Prototypes for local functions */ |
| 44 | |
| 45 | static void initialize_defaults (struct symtab **default_symtab, |
| 46 | int *default_line); |
| 47 | |
| 48 | static void set_flags (char *arg, int *is_quoted, char **paren_pointer); |
| 49 | |
| 50 | static struct symtabs_and_lines decode_indirect (char **argptr); |
| 51 | |
| 52 | static char *locate_first_half (char **argptr, int *is_quote_enclosed); |
| 53 | |
| 54 | static struct symtabs_and_lines decode_objc (char **argptr, |
| 55 | int funfirstline, |
| 56 | struct symtab *file_symtab, |
| 57 | char ***canonical, |
| 58 | char *saved_arg); |
| 59 | |
| 60 | static struct symtabs_and_lines decode_compound (char **argptr, |
| 61 | int funfirstline, |
| 62 | char ***canonical, |
| 63 | char *saved_arg, |
| 64 | char *p); |
| 65 | |
| 66 | static struct symbol *lookup_prefix_sym (char **argptr, char *p); |
| 67 | |
| 68 | static struct symtabs_and_lines find_method (int funfirstline, |
| 69 | char ***canonical, |
| 70 | char *saved_arg, |
| 71 | char *copy, |
| 72 | struct type *t, |
| 73 | struct symbol *sym_class); |
| 74 | |
| 75 | static int collect_methods (char *copy, struct type *t, |
| 76 | struct symbol **sym_arr); |
| 77 | |
| 78 | static NORETURN void cplusplus_error (const char *name, |
| 79 | const char *fmt, ...) |
| 80 | ATTR_NORETURN__attribute__ ((noreturn)) ATTR_FORMAT (printf, 2, 3)__attribute__ ((format(printf, 2, 3))); |
| 81 | |
| 82 | static int total_number_of_methods (struct type *type); |
| 83 | |
| 84 | static int find_methods (struct type *, char *, struct symbol **); |
| 85 | |
| 86 | static int add_matching_methods (int method_counter, struct type *t, |
| 87 | struct symbol **sym_arr); |
| 88 | |
| 89 | static int add_constructors (int method_counter, struct type *t, |
| 90 | struct symbol **sym_arr); |
| 91 | |
| 92 | static void build_canonical_line_spec (struct symtab_and_line *, |
| 93 | char *, char ***); |
| 94 | |
| 95 | static char *find_toplevel_char (char *s, char c); |
| 96 | |
| 97 | static int is_objc_method_format (const char *s); |
| 98 | |
| 99 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], |
| 100 | int, int, char ***); |
| 101 | |
| 102 | static struct symtab *symtab_from_filename (char **argptr, |
| 103 | char *p, int is_quote_enclosed, |
| 104 | int *not_found_ptr); |
| 105 | |
| 106 | static struct |
| 107 | symtabs_and_lines decode_all_digits (char **argptr, |
| 108 | struct symtab *default_symtab, |
| 109 | int default_line, |
| 110 | char ***canonical, |
| 111 | struct symtab *file_symtab, |
| 112 | char *q); |
| 113 | |
| 114 | static struct symtabs_and_lines decode_dollar (char *copy, |
| 115 | int funfirstline, |
| 116 | struct symtab *default_symtab, |
| 117 | char ***canonical, |
| 118 | struct symtab *file_symtab); |
| 119 | |
| 120 | static struct symtabs_and_lines decode_variable (char *copy, |
| 121 | int funfirstline, |
| 122 | char ***canonical, |
| 123 | struct symtab *file_symtab, |
| 124 | int *not_found_ptr); |
| 125 | |
| 126 | static struct |
| 127 | symtabs_and_lines symbol_found (int funfirstline, |
| 128 | char ***canonical, |
| 129 | char *copy, |
| 130 | struct symbol *sym, |
| 131 | struct symtab *file_symtab, |
| 132 | struct symtab *sym_symtab); |
| 133 | |
| 134 | static struct |
| 135 | symtabs_and_lines minsym_found (int funfirstline, |
| 136 | struct minimal_symbol *msymbol); |
| 137 | |
| 138 | /* Helper functions. */ |
| 139 | |
| 140 | /* Issue a helpful hint on using the command completion feature on |
| 141 | single quoted demangled C++ symbols as part of the completion |
| 142 | error. */ |
| 143 | |
| 144 | static NORETURN void |
| 145 | cplusplus_error (const char *name, const char *fmt, ...) |
| 146 | { |
| 147 | struct ui_file *tmp_stream; |
| 148 | tmp_stream = mem_fileopen (); |
| 149 | make_cleanup_ui_file_delete (tmp_stream); |
| 150 | |
| 151 | { |
| 152 | va_list args; |
| 153 | va_start (args, fmt)__builtin_va_start(args, fmt); |
| 154 | vfprintf_unfiltered (tmp_stream, fmt, args); |
| 155 | va_end (args)__builtin_va_end(args); |
| 156 | } |
| 157 | |
| 158 | while (*name == '\'') |
| 159 | name++; |
| 160 | fprintf_unfiltered (tmp_stream, |
| 161 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" |
| 162 | "(Note leading single quote.)"), |
| 163 | name, name); |
| 164 | error_stream (tmp_stream); |
| 165 | } |
| 166 | |
| 167 | /* Return the number of methods described for TYPE, including the |
| 168 | methods from types it derives from. This can't be done in the symbol |
| 169 | reader because the type of the baseclass might still be stubbed |
| 170 | when the definition of the derived class is parsed. */ |
| 171 | |
| 172 | static int |
| 173 | total_number_of_methods (struct type *type) |
| 174 | { |
| 175 | int n; |
| 176 | int count; |
| 177 | |
| 178 | CHECK_TYPEDEF (type)(type) = check_typedef (type); |
| 179 | if (TYPE_CPLUS_SPECIFIC (type)(type)->main_type->type_specific.cplus_stuff == NULL((void*)0)) |
| 180 | return 0; |
| 181 | count = TYPE_NFN_FIELDS_TOTAL (type)(type)->main_type->type_specific.cplus_stuff->nfn_fields_total; |
| 182 | |
| 183 | for (n = 0; n < TYPE_N_BASECLASSES (type)(type)->main_type->type_specific.cplus_stuff->n_baseclasses; n++) |
| 184 | count += total_number_of_methods (TYPE_BASECLASS (type, n)(type)->main_type->fields[n].type); |
| 185 | |
| 186 | return count; |
| 187 | } |
| 188 | |
| 189 | /* Recursive helper function for decode_line_1. |
| 190 | Look for methods named NAME in type T. |
| 191 | Return number of matches. |
| 192 | Put matches in SYM_ARR, which should have been allocated with |
| 193 | a size of total_number_of_methods (T) * sizeof (struct symbol *). |
| 194 | Note that this function is g++ specific. */ |
| 195 | |
| 196 | static int |
| 197 | find_methods (struct type *t, char *name, struct symbol **sym_arr) |
| 198 | { |
| 199 | int i1 = 0; |
| 200 | int ibase; |
| 201 | char *class_name = type_name_no_tag (t); |
| 202 | |
| 203 | /* Ignore this class if it doesn't have a name. This is ugly, but |
| 204 | unless we figure out how to get the physname without the name of |
| 205 | the class, then the loop can't do any good. */ |
| 206 | if (class_name |
| 207 | && (lookup_symbol (class_name, (struct block *) NULL((void*)0), |
| 208 | STRUCT_DOMAIN, (int *) NULL((void*)0), |
| 209 | (struct symtab **) NULL((void*)0)))) |
| 210 | { |
| 211 | int method_counter; |
| 212 | int name_len = strlen (name); |
| 213 | |
| 214 | CHECK_TYPEDEF (t)(t) = check_typedef (t); |
| 215 | |
| 216 | /* Loop over each method name. At this level, all overloads of a name |
| 217 | are counted as a single name. There is an inner loop which loops over |
| 218 | each overload. */ |
| 219 | |
| 220 | for (method_counter = TYPE_NFN_FIELDS (t)(t)->main_type->type_specific.cplus_stuff->nfn_fields - 1; |
| 221 | method_counter >= 0; |
| 222 | --method_counter) |
| 223 | { |
| 224 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [method_counter].name; |
| 225 | char dem_opname[64]; |
| 226 | |
| 227 | if (strncmp (method_name, "__", 2) == 0 || |
| 228 | strncmp (method_name, "op", 2) == 0 || |
| 229 | strncmp (method_name, "type", 4) == 0) |
| 230 | { |
| 231 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI(1 << 1))) |
| 232 | method_name = dem_opname; |
| 233 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) |
| 234 | method_name = dem_opname; |
| 235 | } |
| 236 | |
| 237 | if (strcmp_iw (name, method_name) == 0) |
| 238 | /* Find all the overloaded methods with that name. */ |
| 239 | i1 += add_matching_methods (method_counter, t, |
| 240 | sym_arr + i1); |
| 241 | else if (strncmp (class_name, name, name_len) == 0 |
| 242 | && (class_name[name_len] == '\0' |
| 243 | || class_name[name_len] == '<')) |
| 244 | i1 += add_constructors (method_counter, t, |
| 245 | sym_arr + i1); |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | /* Only search baseclasses if there is no match yet, since names in |
| 250 | derived classes override those in baseclasses. |
| 251 | |
| 252 | FIXME: The above is not true; it is only true of member functions |
| 253 | if they have the same number of arguments (??? - section 13.1 of the |
| 254 | ARM says the function members are not in the same scope but doesn't |
| 255 | really spell out the rules in a way I understand. In any case, if |
| 256 | the number of arguments differ this is a case in which we can overload |
| 257 | rather than hiding without any problem, and gcc 2.4.5 does overload |
| 258 | rather than hiding in this case). */ |
| 259 | |
| 260 | if (i1 == 0) |
| 261 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t)(t)->main_type->type_specific.cplus_stuff->n_baseclasses; ibase++) |
| 262 | i1 += find_methods (TYPE_BASECLASS (t, ibase)(t)->main_type->fields[ibase].type, name, sym_arr + i1); |
| 263 | |
| 264 | return i1; |
| 265 | } |
| 266 | |
| 267 | /* Add the symbols associated to methods of the class whose type is T |
| 268 | and whose name matches the method indexed by METHOD_COUNTER in the |
| 269 | array SYM_ARR. Return the number of methods added. */ |
| 270 | |
| 271 | static int |
| 272 | add_matching_methods (int method_counter, struct type *t, |
| 273 | struct symbol **sym_arr) |
| 274 | { |
| 275 | int field_counter; |
| 276 | int i1 = 0; |
| 277 | |
| 278 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [method_counter].length - 1; |
| 279 | field_counter >= 0; |
| 280 | --field_counter) |
| 281 | { |
| 282 | struct fn_field *f; |
| 283 | char *phys_name; |
| 284 | |
| 285 | f = TYPE_FN_FIELDLIST1 (t, method_counter)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [method_counter].fn_fields; |
| 286 | |
| 287 | if (TYPE_FN_FIELD_STUB (f, field_counter)((f)[field_counter].is_stub)) |
| 288 | { |
| 289 | char *tmp_name; |
| 290 | |
| 291 | tmp_name = gdb_mangle_name (t, |
| 292 | method_counter, |
| 293 | field_counter); |
| 294 | phys_name = alloca (strlen (tmp_name) + 1)__builtin_alloca(strlen (tmp_name) + 1); |
| 295 | strcpy (phys_name, tmp_name); |
| 296 | xfree (tmp_name); |
| 297 | } |
| 298 | else |
| 299 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter)(f)[field_counter].physname; |
| 300 | |
| 301 | /* Destructor is handled by caller, don't add it to |
| 302 | the list. */ |
| 303 | if (is_destructor_name (phys_name) != 0) |
| 304 | continue; |
| 305 | |
| 306 | sym_arr[i1] = lookup_symbol (phys_name, |
| 307 | NULL((void*)0), VAR_DOMAIN, |
| 308 | (int *) NULL((void*)0), |
| 309 | (struct symtab **) NULL((void*)0)); |
| 310 | if (sym_arr[i1]) |
| 311 | i1++; |
| 312 | else |
| 313 | { |
| 314 | /* This error message gets printed, but the method |
| 315 | still seems to be found |
| 316 | fputs_filtered("(Cannot find method ", gdb_stdout); |
| 317 | fprintf_symbol_filtered (gdb_stdout, phys_name, |
| 318 | language_cplus, |
| 319 | DMGL_PARAMS | DMGL_ANSI); |
| 320 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); |
| 321 | */ |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | return i1; |
| 326 | } |
| 327 | |
| 328 | /* Add the symbols associated to constructors of the class whose type |
| 329 | is CLASS_TYPE and which are indexed by by METHOD_COUNTER to the |
| 330 | array SYM_ARR. Return the number of methods added. */ |
| 331 | |
| 332 | static int |
| 333 | add_constructors (int method_counter, struct type *t, |
| 334 | struct symbol **sym_arr) |
| 335 | { |
| 336 | int field_counter; |
| 337 | int i1 = 0; |
| 338 | |
| 339 | /* For GCC 3.x and stabs, constructors and destructors |
| 340 | have names like __base_ctor and __complete_dtor. |
| 341 | Check the physname for now if we're looking for a |
| 342 | constructor. */ |
| 343 | for (field_counter |
| 344 | = TYPE_FN_FIELDLIST_LENGTH (t, method_counter)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [method_counter].length - 1; |
| 345 | field_counter >= 0; |
| 346 | --field_counter) |
| 347 | { |
| 348 | struct fn_field *f; |
| 349 | char *phys_name; |
| 350 | |
| 351 | f = TYPE_FN_FIELDLIST1 (t, method_counter)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [method_counter].fn_fields; |
| 352 | |
| 353 | /* GCC 3.x will never produce stabs stub methods, so |
| 354 | we don't need to handle this case. */ |
| 355 | if (TYPE_FN_FIELD_STUB (f, field_counter)((f)[field_counter].is_stub)) |
| 356 | continue; |
| 357 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter)(f)[field_counter].physname; |
| 358 | if (! is_constructor_name (phys_name)) |
| 359 | continue; |
| 360 | |
| 361 | /* If this method is actually defined, include it in the |
| 362 | list. */ |
| 363 | sym_arr[i1] = lookup_symbol (phys_name, |
| 364 | NULL((void*)0), VAR_DOMAIN, |
| 365 | (int *) NULL((void*)0), |
| 366 | (struct symtab **) NULL((void*)0)); |
| 367 | if (sym_arr[i1]) |
| 368 | i1++; |
| 369 | } |
| 370 | |
| 371 | return i1; |
| 372 | } |
| 373 | |
| 374 | /* Helper function for decode_line_1. |
| 375 | Build a canonical line spec in CANONICAL if it is non-NULL and if |
| 376 | the SAL has a symtab. |
| 377 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. |
| 378 | If SYMNAME is NULL the line number from SAL is used and the canonical |
| 379 | line spec is `filename:linenum'. */ |
| 380 | |
| 381 | static void |
| 382 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, |
| 383 | char ***canonical) |
| 384 | { |
| 385 | char **canonical_arr; |
| 386 | char *canonical_name; |
| 387 | char *filename; |
| 388 | struct symtab *s = sal->symtab; |
| 389 | |
| 390 | if (s == (struct symtab *) NULL((void*)0) |
| 391 | || s->filename == (char *) NULL((void*)0) |
| 392 | || canonical == (char ***) NULL((void*)0)) |
| 393 | return; |
| 394 | |
| 395 | canonical_arr = (char **) xmalloc (sizeof (char *)); |
| 396 | *canonical = canonical_arr; |
| 397 | |
| 398 | filename = s->filename; |
| 399 | if (symname != NULL((void*)0)) |
| 400 | { |
| 401 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); |
| 402 | sprintf (canonical_name, "%s:%s", filename, symname); |
| 403 | } |
| 404 | else |
| 405 | { |
| 406 | canonical_name = xmalloc (strlen (filename) + 30); |
| 407 | sprintf (canonical_name, "%s:%d", filename, sal->line); |
| 408 | } |
| 409 | canonical_arr[0] = canonical_name; |
| 410 | } |
| 411 | |
| 412 | |
| 413 | |
| 414 | /* Find an instance of the character C in the string S that is outside |
| 415 | of all parenthesis pairs, single-quoted strings, and double-quoted |
| 416 | strings. Also, ignore the char within a template name, like a ',' |
| 417 | within foo<int, int>. */ |
| 418 | |
| 419 | static char * |
| 420 | find_toplevel_char (char *s, char c) |
| 421 | { |
| 422 | int quoted = 0; /* zero if we're not in quotes; |
| 423 | '"' if we're in a double-quoted string; |
| 424 | '\'' if we're in a single-quoted string. */ |
| 425 | int depth = 0; /* Number of unclosed parens we've seen. */ |
| 426 | char *scan; |
| 427 | |
| 428 | for (scan = s; *scan; scan++) |
| 429 | { |
| 430 | if (quoted) |
| 431 | { |
| 432 | if (*scan == quoted) |
| 433 | quoted = 0; |
| 434 | else if (*scan == '\\' && *(scan + 1)) |
| 435 | scan++; |
| 436 | } |
| 437 | else if (*scan == c && ! quoted && depth == 0) |
| 438 | return scan; |
| 439 | else if (*scan == '"' || *scan == '\'') |
| 440 | quoted = *scan; |
| 441 | else if (*scan == '(' || *scan == '<') |
| 442 | depth++; |
| 443 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
| 444 | depth--; |
| 445 | } |
| 446 | |
| 447 | return 0; |
| 448 | } |
| 449 | |
| 450 | /* Determines if the gives string corresponds to an Objective-C method |
| 451 | representation, such as -[Foo bar:] or +[Foo bar]. Objective-C symbols |
| 452 | are allowed to have spaces and parentheses in them. */ |
| 453 | |
| 454 | static int |
| 455 | is_objc_method_format (const char *s) |
| 456 | { |
| 457 | if (s == NULL((void*)0) || *s == '\0') |
| 458 | return 0; |
| 459 | /* Handle arguments with the format FILENAME:SYMBOL. */ |
| 460 | if ((s[0] == ':') && (strchr ("+-", s[1]) != NULL((void*)0)) |
| 461 | && (s[2] == '[') && strchr(s, ']')) |
| 462 | return 1; |
| 463 | /* Handle arguments that are just SYMBOL. */ |
| 464 | else if ((strchr ("+-", s[0]) != NULL((void*)0)) && (s[1] == '[') && strchr(s, ']')) |
| 465 | return 1; |
| 466 | return 0; |
| 467 | } |
| 468 | |
| 469 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to |
| 470 | operate on (ask user if necessary). |
| 471 | If CANONICAL is non-NULL return a corresponding array of mangled names |
| 472 | as canonical line specs there. */ |
| 473 | |
| 474 | static struct symtabs_and_lines |
| 475 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, |
| 476 | char ***canonical) |
| 477 | { |
| 478 | struct symtabs_and_lines values, return_values; |
| 479 | char *args, *arg1; |
| 480 | int i; |
| 481 | char *prompt; |
| 482 | char *symname; |
| 483 | struct cleanup *old_chain; |
| 484 | char **canonical_arr = (char **) NULL((void*)0); |
| 485 | |
| 486 | values.sals = (struct symtab_and_line *) |
| 487 | alloca (nelts * sizeof (struct symtab_and_line))__builtin_alloca(nelts * sizeof (struct symtab_and_line)); |
| 488 | return_values.sals = (struct symtab_and_line *) |
| 489 | xmalloc (nelts * sizeof (struct symtab_and_line)); |
| 490 | old_chain = make_cleanup (xfree, return_values.sals); |
| 491 | |
| 492 | if (canonical) |
| 493 | { |
| 494 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); |
| 495 | make_cleanup (xfree, canonical_arr); |
| 496 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
| 497 | *canonical = canonical_arr; |
| 498 | } |
| 499 | |
| 500 | i = 0; |
| 501 | printf_unfiltered ("[0] cancel\n[1] all\n"); |
| 502 | while (i < nelts) |
| 503 | { |
| 504 | init_sal (&return_values.sals[i]); /* Initialize to zeroes. */ |
| 505 | init_sal (&values.sals[i]); |
| 506 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i])(sym_arr[i])->aclass == LOC_BLOCK) |
| 507 | { |
| 508 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); |
| 509 | if (values.sals[i].symtab) |
| 510 | printf_unfiltered ("[%d] %s at %s:%d\n", |
| 511 | (i + 2), |
| 512 | SYMBOL_PRINT_NAME (sym_arr[i])(demangle ? (symbol_natural_name (&(sym_arr[i])->ginfo )) : (sym_arr[i])->ginfo.name), |
| 513 | values.sals[i].symtab->filename, |
| 514 | values.sals[i].line); |
| 515 | else |
| 516 | printf_unfiltered ("[%d] %s at ?FILE:%d [No symtab? Probably broken debug info...]\n", |
| 517 | (i + 2), |
| 518 | SYMBOL_PRINT_NAME (sym_arr[i])(demangle ? (symbol_natural_name (&(sym_arr[i])->ginfo )) : (sym_arr[i])->ginfo.name), |
| 519 | values.sals[i].line); |
| 520 | |
| 521 | } |
| 522 | else |
| 523 | printf_unfiltered ("?HERE\n"); |
| 524 | i++; |
| 525 | } |
| 526 | |
| 527 | prompt = getenv ("PS2"); |
| 528 | if (prompt == NULL((void*)0)) |
| 529 | { |
| 530 | prompt = "> "; |
| 531 | } |
| 532 | args = command_line_input (prompt, 0, "overload-choice"); |
| 533 | |
| 534 | if (args == 0 || *args == 0) |
| 535 | error_no_arg ("one or more choice numbers"); |
| 536 | |
| 537 | i = 0; |
| 538 | while (*args) |
| 539 | { |
| 540 | int num; |
| 541 | |
| 542 | arg1 = args; |
| 543 | while (*arg1 >= '0' && *arg1 <= '9') |
| 544 | arg1++; |
| 545 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') |
| 546 | error ("Arguments must be choice numbers."); |
| 547 | |
| 548 | num = atoi (args); |
| 549 | |
| 550 | if (num == 0) |
| 551 | error ("canceled"); |
| 552 | else if (num == 1) |
| 553 | { |
| 554 | if (canonical_arr) |
| 555 | { |
| 556 | for (i = 0; i < nelts; i++) |
| 557 | { |
| 558 | if (canonical_arr[i] == NULL((void*)0)) |
| 559 | { |
| 560 | symname = DEPRECATED_SYMBOL_NAME (sym_arr[i])(sym_arr[i])->ginfo.name; |
| 561 | canonical_arr[i] = savestring (symname, strlen (symname)); |
| 562 | } |
| 563 | } |
| 564 | } |
| 565 | memcpy (return_values.sals, values.sals, |
| 566 | (nelts * sizeof (struct symtab_and_line))); |
| 567 | return_values.nelts = nelts; |
| 568 | discard_cleanups (old_chain); |
| 569 | return return_values; |
| 570 | } |
| 571 | |
| 572 | if (num >= nelts + 2) |
| 573 | { |
| 574 | printf_unfiltered ("No choice number %d.\n", num); |
| 575 | } |
| 576 | else |
| 577 | { |
| 578 | num -= 2; |
| 579 | if (values.sals[num].pc) |
| 580 | { |
| 581 | if (canonical_arr) |
| 582 | { |
| 583 | symname = DEPRECATED_SYMBOL_NAME (sym_arr[num])(sym_arr[num])->ginfo.name; |
| 584 | make_cleanup (xfree, symname); |
| 585 | canonical_arr[i] = savestring (symname, strlen (symname)); |
| 586 | } |
| 587 | return_values.sals[i++] = values.sals[num]; |
| 588 | values.sals[num].pc = 0; |
| 589 | } |
| 590 | else |
| 591 | { |
| 592 | printf_unfiltered ("duplicate request for %d ignored.\n", num); |
| 593 | } |
| 594 | } |
| 595 | |
| 596 | args = arg1; |
| 597 | while (*args == ' ' || *args == '\t') |
| 598 | args++; |
| 599 | } |
| 600 | return_values.nelts = i; |
| 601 | discard_cleanups (old_chain); |
| 602 | return return_values; |
| 603 | } |
| 604 | |
| 605 | /* The parser of linespec itself. */ |
| 606 | |
| 607 | /* Parse a string that specifies a line number. |
| 608 | Pass the address of a char * variable; that variable will be |
| 609 | advanced over the characters actually parsed. |
| 610 | |
| 611 | The string can be: |
| 612 | |
| 613 | LINENUM -- that line number in current file. PC returned is 0. |
| 614 | FILE:LINENUM -- that line in that file. PC returned is 0. |
| 615 | FUNCTION -- line number of openbrace of that function. |
| 616 | PC returned is the start of the function. |
| 617 | VARIABLE -- line number of definition of that variable. |
| 618 | PC returned is 0. |
| 619 | FILE:FUNCTION -- likewise, but prefer functions in that file. |
| 620 | *EXPR -- line in which address EXPR appears. |
| 621 | |
| 622 | This may all be followed by an "if EXPR", which we ignore. |
| 623 | |
| 624 | FUNCTION may be an undebuggable function found in minimal symbol table. |
| 625 | |
| 626 | If the argument FUNFIRSTLINE is nonzero, we want the first line |
| 627 | of real code inside a function when a function is specified, and it is |
| 628 | not OK to specify a variable or type to get its line number. |
| 629 | |
| 630 | DEFAULT_SYMTAB specifies the file to use if none is specified. |
| 631 | It defaults to current_source_symtab. |
| 632 | DEFAULT_LINE specifies the line number to use for relative |
| 633 | line numbers (that start with signs). Defaults to current_source_line. |
| 634 | If CANONICAL is non-NULL, store an array of strings containing the canonical |
| 635 | line specs there if necessary. Currently overloaded member functions and |
| 636 | line numbers or static functions without a filename yield a canonical |
| 637 | line spec. The array and the line spec strings are allocated on the heap, |
| 638 | it is the callers responsibility to free them. |
| 639 | |
| 640 | Note that it is possible to return zero for the symtab |
| 641 | if no file is validly specified. Callers must check that. |
| 642 | Also, the line number returned may be invalid. |
| 643 | |
| 644 | If NOT_FOUND_PTR is not null, store a boolean true/false value at the location, based |
| 645 | on whether or not failure occurs due to an unknown function or file. In the case |
| 646 | where failure does occur due to an unknown function or file, do not issue an error |
| 647 | message. */ |
| 648 | |
| 649 | /* We allow single quotes in various places. This is a hideous |
| 650 | kludge, which exists because the completer can't yet deal with the |
| 651 | lack of single quotes. FIXME: write a linespec_completer which we |
| 652 | can use as appropriate instead of make_symbol_completion_list. */ |
| 653 | |
| 654 | struct symtabs_and_lines |
| 655 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, |
| 656 | int default_line, char ***canonical, int *not_found_ptr) |
| 657 | { |
| 658 | char *p; |
| 659 | char *q; |
| 660 | /* If a file name is specified, this is its symtab. */ |
| 661 | struct symtab *file_symtab = NULL((void*)0); |
| 662 | |
| 663 | char *copy; |
| 664 | /* This is NULL if there are no parens in *ARGPTR, or a pointer to |
| 665 | the closing parenthesis if there are parens. */ |
| 666 | char *paren_pointer; |
| 667 | /* This says whether or not something in *ARGPTR is quoted with |
| 668 | completer_quotes (i.e. with single quotes). */ |
| 669 | int is_quoted; |
| 670 | /* Is part of *ARGPTR is enclosed in double quotes? */ |
| 671 | int is_quote_enclosed; |
| 672 | int is_objc_method = 0; |
| 673 | char *saved_arg = *argptr; |
| 674 | |
| 675 | if (not_found_ptr) |
| 676 | *not_found_ptr = 0; |
| 677 | |
| 678 | /* Defaults have defaults. */ |
| 679 | |
| 680 | initialize_defaults (&default_symtab, &default_line); |
| 681 | |
| 682 | /* See if arg is *PC. */ |
| 683 | |
| 684 | if (**argptr == '*') |
| 685 | return decode_indirect (argptr); |
| 686 | |
| 687 | /* Set various flags. 'paren_pointer' is important for overload |
| 688 | checking, where we allow things like: |
| 689 | (gdb) break c::f(int) |
| 690 | */ |
| 691 | |
| 692 | set_flags (*argptr, &is_quoted, &paren_pointer); |
| 693 | |
| 694 | /* Check to see if it's a multipart linespec (with colons or |
| 695 | periods). */ |
| 696 | |
| 697 | /* Locate the end of the first half of the linespec. |
| 698 | After the call, for instance, if the argptr string is "foo.c:123" |
| 699 | p will point at "123". If there is only one part, like "foo", p |
| 700 | will point to "". If this is a C++ name, like "A::B::foo", p will |
| 701 | point to "::B::foo". Argptr is not changed by this call. */ |
| 702 | |
| 703 | p = locate_first_half (argptr, &is_quote_enclosed); |
| 704 | |
| 705 | /* Check if this is an Objective-C method (anything that starts with |
| 706 | a '+' or '-' and a '['). */ |
| 707 | if (is_objc_method_format (p)) |
| 708 | { |
| 709 | is_objc_method = 1; |
| 710 | paren_pointer = NULL((void*)0); /* Just a category name. Ignore it. */ |
| 711 | } |
| 712 | |
| 713 | /* Check if the symbol could be an Objective-C selector. */ |
| 714 | |
| 715 | { |
| 716 | struct symtabs_and_lines values; |
| 717 | values = decode_objc (argptr, funfirstline, NULL((void*)0), |
| 718 | canonical, saved_arg); |
| 719 | if (values.sals != NULL((void*)0)) |
| 720 | return values; |
| 721 | } |
| 722 | |
| 723 | /* Does it look like there actually were two parts? */ |
| 724 | |
| 725 | if ((p[0] == ':' || p[0] == '.') && paren_pointer == NULL((void*)0)) |
| 726 | { |
| 727 | if (is_quoted) |
| 728 | *argptr = *argptr + 1; |
| 729 | |
| 730 | /* Is it a C++ or Java compound data structure? |
| 731 | The check on p[1] == ':' is capturing the case of "::", |
| 732 | since p[0]==':' was checked above. |
| 733 | Note that the call to decode_compound does everything |
| 734 | for us, including the lookup on the symbol table, so we |
| 735 | can return now. */ |
| 736 | |
| 737 | if (p[0] == '.' || p[1] == ':') |
| 738 | return decode_compound (argptr, funfirstline, canonical, |
| 739 | saved_arg, p); |
| 740 | |
| 741 | /* No, the first part is a filename; set s to be that file's |
| 742 | symtab. Also, move argptr past the filename. */ |
| 743 | |
| 744 | file_symtab = symtab_from_filename (argptr, p, is_quote_enclosed, |
| 745 | not_found_ptr); |
| 746 | } |
| 747 | #if 0 |
| 748 | /* No one really seems to know why this was added. It certainly |
| 749 | breaks the command line, though, whenever the passed |
| 750 | name is of the form ClassName::Method. This bit of code |
| 751 | singles out the class name, and if funfirstline is set (for |
| 752 | example, you are setting a breakpoint at this function), |
| 753 | you get an error. This did not occur with earlier |
| 754 | verions, so I am ifdef'ing this out. 3/29/99 */ |
| 755 | else |
| 756 | { |
| 757 | /* Check if what we have till now is a symbol name */ |
| 758 | |
| 759 | /* We may be looking at a template instantiation such |
| 760 | as "foo<int>". Check here whether we know about it, |
| 761 | instead of falling through to the code below which |
| 762 | handles ordinary function names, because that code |
| 763 | doesn't like seeing '<' and '>' in a name -- the |
| 764 | skip_quoted call doesn't go past them. So see if we |
| 765 | can figure it out right now. */ |
| 766 | |
| 767 | copy = (char *) alloca (p - *argptr + 1)__builtin_alloca(p - *argptr + 1); |
| 768 | memcpy (copy, *argptr, p - *argptr); |
| 769 | copy[p - *argptr] = '\000'; |
| 770 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0, &sym_symtab); |
| 771 | if (sym) |
| 772 | { |
| 773 | *argptr = (*p == '\'') ? p + 1 : p; |
| 774 | return symbol_found (funfirstline, canonical, copy, sym, |
| 775 | NULL((void*)0), sym_symtab); |
| 776 | } |
| 777 | /* Otherwise fall out from here and go to file/line spec |
| 778 | processing, etc. */ |
| 779 | } |
| 780 | #endif |
| 781 | |
| 782 | /* S is specified file's symtab, or 0 if no file specified. |
| 783 | arg no longer contains the file name. */ |
| 784 | |
| 785 | /* Check whether arg is all digits (and sign). */ |
| 786 | |
| 787 | q = *argptr; |
| 788 | if (*q == '-' || *q == '+') |
| 789 | q++; |
| 790 | while (*q >= '0' && *q <= '9') |
| 791 | q++; |
| 792 | |
| 793 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) |
| 794 | /* We found a token consisting of all digits -- at least one digit. */ |
| 795 | return decode_all_digits (argptr, default_symtab, default_line, |
| 796 | canonical, file_symtab, q); |
| 797 | |
| 798 | /* Arg token is not digits => try it as a variable name |
| 799 | Find the next token (everything up to end or next whitespace). */ |
| 800 | |
| 801 | if (**argptr == '$') /* May be a convenience variable. */ |
| 802 | /* One or two $ chars possible. */ |
| 803 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); |
| 804 | else if (is_quoted) |
| 805 | { |
| 806 | p = skip_quoted (*argptr); |
| 807 | if (p[-1] != '\'') |
| 808 | error ("Unmatched single quote."); |
| 809 | } |
| 810 | else if (is_objc_method) |
| 811 | { |
| 812 | /* allow word separators in method names for Obj-C */ |
| 813 | p = skip_quoted_chars (*argptr, NULL((void*)0), ""); |
| 814 | } |
| 815 | else if (paren_pointer != NULL((void*)0)) |
| 816 | { |
| 817 | p = paren_pointer + 1; |
| 818 | } |
| 819 | else |
| 820 | { |
| 821 | p = skip_quoted (*argptr); |
| 822 | } |
| 823 | |
| 824 | copy = (char *) alloca (p - *argptr + 1)__builtin_alloca(p - *argptr + 1); |
| 825 | memcpy (copy, *argptr, p - *argptr); |
| 826 | copy[p - *argptr] = '\0'; |
| 827 | if (p != *argptr |
| 828 | && copy[0] |
| 829 | && copy[0] == copy[p - *argptr - 1] |
| 830 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL((void*)0)) |
| 831 | { |
| 832 | copy[p - *argptr - 1] = '\0'; |
| 833 | copy++; |
| 834 | } |
| 835 | while (*p == ' ' || *p == '\t') |
| 836 | p++; |
| 837 | *argptr = p; |
| 838 | |
| 839 | /* If it starts with $: may be a legitimate variable or routine name |
| 840 | (e.g. HP-UX millicode routines such as $$dyncall), or it may |
| 841 | be history value, or it may be a convenience variable. */ |
| 842 | |
| 843 | if (*copy == '$') |
| 844 | return decode_dollar (copy, funfirstline, default_symtab, |
| 845 | canonical, file_symtab); |
| 846 | |
| 847 | /* Look up that token as a variable. |
| 848 | If file specified, use that file's per-file block to start with. */ |
| 849 | |
| 850 | return decode_variable (copy, funfirstline, canonical, |
| 851 | file_symtab, not_found_ptr); |
| 852 | } |
| 853 | |
| 854 | |
| 855 | |
| 856 | /* Now, more helper functions for decode_line_1. Some conventions |
| 857 | that these functions follow: |
| 858 | |
| 859 | Decode_line_1 typically passes along some of its arguments or local |
| 860 | variables to the subfunctions. It passes the variables by |
| 861 | reference if they are modified by the subfunction, and by value |
| 862 | otherwise. |
| 863 | |
| 864 | Some of the functions have side effects that don't arise from |
| 865 | variables that are passed by reference. In particular, if a |
| 866 | function is passed ARGPTR as an argument, it modifies what ARGPTR |
| 867 | points to; typically, it advances *ARGPTR past whatever substring |
| 868 | it has just looked at. (If it doesn't modify *ARGPTR, then the |
| 869 | function gets passed *ARGPTR instead, which is then called ARG: see |
| 870 | set_flags, for example.) Also, functions that return a struct |
| 871 | symtabs_and_lines may modify CANONICAL, as in the description of |
| 872 | decode_line_1. |
| 873 | |
| 874 | If a function returns a struct symtabs_and_lines, then that struct |
| 875 | will immediately make its way up the call chain to be returned by |
| 876 | decode_line_1. In particular, all of the functions decode_XXX |
| 877 | calculate the appropriate struct symtabs_and_lines, under the |
| 878 | assumption that their argument is of the form XXX. */ |
| 879 | |
| 880 | /* First, some functions to initialize stuff at the beggining of the |
| 881 | function. */ |
| 882 | |
| 883 | static void |
| 884 | initialize_defaults (struct symtab **default_symtab, int *default_line) |
| 885 | { |
| 886 | if (*default_symtab == 0) |
| 887 | { |
| 888 | /* Use whatever we have for the default source line. We don't use |
| 889 | get_current_or_default_symtab_and_line as it can recurse and call |
| 890 | us back! */ |
| 891 | struct symtab_and_line cursal = |
| 892 | get_current_source_symtab_and_line (); |
| 893 | |
| 894 | *default_symtab = cursal.symtab; |
| 895 | *default_line = cursal.line; |
| 896 | } |
| 897 | } |
| 898 | |
| 899 | static void |
| 900 | set_flags (char *arg, int *is_quoted, char **paren_pointer) |
| 901 | { |
| 902 | char *ii; |
| 903 | int has_if = 0; |
| 904 | |
| 905 | /* 'has_if' is for the syntax: |
| 906 | (gdb) break foo if (a==b) |
| 907 | */ |
| 908 | if ((ii = strstr (arg, " if ")) != NULL((void*)0) || |
| 909 | (ii = strstr (arg, "\tif ")) != NULL((void*)0) || |
| 910 | (ii = strstr (arg, " if\t")) != NULL((void*)0) || |
| 911 | (ii = strstr (arg, "\tif\t")) != NULL((void*)0) || |
| 912 | (ii = strstr (arg, " if(")) != NULL((void*)0) || |
| 913 | (ii = strstr (arg, "\tif( ")) != NULL((void*)0)) |
| 914 | has_if = 1; |
| 915 | /* Temporarily zap out "if (condition)" to not confuse the |
| 916 | parenthesis-checking code below. This is undone below. Do not |
| 917 | change ii!! */ |
| 918 | if (has_if) |
| 919 | { |
| 920 | *ii = '\0'; |
| 921 | } |
| 922 | |
| 923 | *is_quoted = (*arg |
| 924 | && strchr (get_gdb_completer_quote_characters (), |
| 925 | *arg) != NULL((void*)0)); |
| 926 | |
| 927 | *paren_pointer = strchr (arg, '('); |
| 928 | if (*paren_pointer != NULL((void*)0)) |
| 929 | *paren_pointer = strrchr (*paren_pointer, ')'); |
| 930 | |
| 931 | /* Now that we're safely past the paren_pointer check, put back " if |
| 932 | (condition)" so outer layers can see it. */ |
| 933 | if (has_if) |
| 934 | *ii = ' '; |
| 935 | } |
| 936 | |
| 937 | |
| 938 | |
| 939 | /* Decode arg of the form *PC. */ |
| 940 | |
| 941 | static struct symtabs_and_lines |
| 942 | decode_indirect (char **argptr) |
| 943 | { |
| 944 | struct symtabs_and_lines values; |
| 945 | CORE_ADDR pc; |
| 946 | |
| 947 | (*argptr)++; |
| 948 | pc = parse_and_eval_address_1 (argptr); |
| 949 | |
| 950 | values.sals = (struct symtab_and_line *) |
| 951 | xmalloc (sizeof (struct symtab_and_line)); |
| 952 | |
| 953 | values.nelts = 1; |
| 954 | values.sals[0] = find_pc_line (pc, 0); |
| 955 | values.sals[0].pc = pc; |
| 956 | values.sals[0].section = find_pc_overlay (pc); |
| 957 | |
| 958 | return values; |
| 959 | } |
| 960 | |
| 961 | |
| 962 | |
| 963 | /* Locate the first half of the linespec, ending in a colon, period, |
| 964 | or whitespace. (More or less.) Also, check to see if *ARGPTR is |
| 965 | enclosed in double quotes; if so, set is_quote_enclosed, advance |
| 966 | ARGPTR past that and zero out the trailing double quote. |
| 967 | If ARGPTR is just a simple name like "main", p will point to "" |
| 968 | at the end. */ |
| 969 | |
| 970 | static char * |
| 971 | locate_first_half (char **argptr, int *is_quote_enclosed) |
| 972 | { |
| 973 | char *ii; |
| 974 | char *p, *p1; |
| 975 | int has_comma; |
| 976 | |
| 977 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM |
| 978 | and we must isolate the first half. Outer layers will call again later |
| 979 | for the second half. |
| 980 | |
| 981 | Don't count commas that appear in argument lists of overloaded |
| 982 | functions, or in quoted strings. It's stupid to go to this much |
| 983 | trouble when the rest of the function is such an obvious roach hotel. */ |
| 984 | ii = find_toplevel_char (*argptr, ','); |
| 985 | has_comma = (ii != 0); |
| 986 | |
| 987 | /* Temporarily zap out second half to not confuse the code below. |
| 988 | This is undone below. Do not change ii!! */ |
| 989 | if (has_comma) |
| 990 | { |
| 991 | *ii = '\0'; |
| 992 | } |
| 993 | |
| 994 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION. May also be |
| 995 | CLASS::MEMBER, or NAMESPACE::NAME. Look for ':', but ignore |
| 996 | inside of <>. */ |
| 997 | |
| 998 | p = *argptr; |
| 999 | if (p[0] == '"') |
| 1000 | { |
| 1001 | *is_quote_enclosed = 1; |
| 1002 | (*argptr)++; |
| 1003 | p++; |
| 1004 | } |
| 1005 | else |
| 1006 | *is_quote_enclosed = 0; |
| 1007 | for (; *p; p++) |
| 1008 | { |
| 1009 | if (p[0] == '<') |
| 1010 | { |
| 1011 | char *temp_end = find_template_name_end (p); |
| 1012 | if (!temp_end) |
| 1013 | error ("malformed template specification in command"); |
| 1014 | p = temp_end; |
| 1015 | } |
| 1016 | /* Check for a colon and a plus or minus and a [ (which |
| 1017 | indicates an Objective-C method) */ |
| 1018 | if (is_objc_method_format (p)) |
| 1019 | { |
| 1020 | break; |
| 1021 | } |
| 1022 | /* Check for the end of the first half of the linespec. End of |
| 1023 | line, a tab, a double colon or the last single colon, or a |
| 1024 | space. But if enclosed in double quotes we do not break on |
| 1025 | enclosed spaces. */ |
| 1026 | if (!*p |
| 1027 | || p[0] == '\t' |
| 1028 | || ((p[0] == ':') |
| 1029 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL((void*)0)))) |
| 1030 | || ((p[0] == ' ') && !*is_quote_enclosed)) |
| 1031 | break; |
| 1032 | if (p[0] == '.' && strchr (p, ':') == NULL((void*)0)) |
| 1033 | { |
| 1034 | /* Java qualified method. Find the *last* '.', since the |
| 1035 | others are package qualifiers. */ |
| 1036 | for (p1 = p; *p1; p1++) |
| 1037 | { |
| 1038 | if (*p1 == '.') |
| 1039 | p = p1; |
| 1040 | } |
| 1041 | break; |
| 1042 | } |
| 1043 | } |
| 1044 | while (p[0] == ' ' || p[0] == '\t') |
| 1045 | p++; |
| 1046 | |
| 1047 | /* If the closing double quote was left at the end, remove it. */ |
| 1048 | if (*is_quote_enclosed) |
| 1049 | { |
| 1050 | char *closing_quote = strchr (p - 1, '"'); |
| 1051 | if (closing_quote && closing_quote[1] == '\0') |
| 1052 | *closing_quote = '\0'; |
| 1053 | } |
| 1054 | |
| 1055 | /* Now that we've safely parsed the first half, put back ',' so |
| 1056 | outer layers can see it. */ |
| 1057 | if (has_comma) |
| 1058 | *ii = ','; |
| 1059 | |
| 1060 | return p; |
| 1061 | } |
| 1062 | |
| 1063 | |
| 1064 | |
| 1065 | /* Here's where we recognise an Objective-C Selector. An Objective C |
| 1066 | selector may be implemented by more than one class, therefore it |
| 1067 | may represent more than one method/function. This gives us a |
| 1068 | situation somewhat analogous to C++ overloading. If there's more |
| 1069 | than one method that could represent the selector, then use some of |
| 1070 | the existing C++ code to let the user choose one. */ |
| 1071 | |
| 1072 | struct symtabs_and_lines |
| 1073 | decode_objc (char **argptr, int funfirstline, struct symtab *file_symtab, |
| 1074 | char ***canonical, char *saved_arg) |
| 1075 | { |
| 1076 | struct symtabs_and_lines values; |
| 1077 | struct symbol **sym_arr = NULL((void*)0); |
| 1078 | struct symbol *sym = NULL((void*)0); |
| 1079 | char *copy = NULL((void*)0); |
| 1080 | struct block *block = NULL((void*)0); |
| 1081 | int i1 = 0; |
| 1082 | int i2 = 0; |
| 1083 | |
| 1084 | values.sals = NULL((void*)0); |
| 1085 | values.nelts = 0; |
| 1086 | |
| 1087 | if (file_symtab != NULL((void*)0)) |
| 1088 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab), STATIC_BLOCK)((file_symtab)->blockvector)->block[STATIC_BLOCK]; |
| 1089 | else |
| 1090 | block = get_selected_block (0); |
| 1091 | |
| 1092 | copy = find_imps (file_symtab, block, *argptr, NULL((void*)0), &i1, &i2); |
Value stored to 'copy' is never read | |
| 1093 | |
| 1094 | if (i1 > 0) |
| 1095 | { |
| 1096 | sym_arr = (struct symbol **) alloca ((i1 + 1) * sizeof (struct symbol *))__builtin_alloca((i1 + 1) * sizeof (struct symbol *)); |
| 1097 | sym_arr[i1] = 0; |
| 1098 | |
| 1099 | copy = find_imps (file_symtab, block, *argptr, sym_arr, &i1, &i2); |
| 1100 | *argptr = copy; |
| 1101 | } |
| 1102 | |
| 1103 | /* i1 now represents the TOTAL number of matches found. |
| 1104 | i2 represents how many HIGH-LEVEL (struct symbol) matches, |
| 1105 | which will come first in the sym_arr array. Any low-level |
| 1106 | (minimal_symbol) matches will follow those. */ |
| 1107 | |
| 1108 | if (i1 == 1) |
| 1109 | { |
| 1110 | if (i2 > 0) |
| 1111 | { |
| 1112 | /* Already a struct symbol. */ |
| 1113 | sym = sym_arr[0]; |
| 1114 | } |
| 1115 | else |
| 1116 | { |
| 1117 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (sym_arr[0])(sym_arr[0])->ginfo.value.address); |
| 1118 | if ((sym != NULL((void*)0)) && strcmp (SYMBOL_LINKAGE_NAME (sym_arr[0])(sym_arr[0])->ginfo.name, SYMBOL_LINKAGE_NAME (sym)(sym)->ginfo.name) != 0) |
| 1119 | { |
| 1120 | warning ("debugging symbol \"%s\" does not match selector; ignoring", SYMBOL_LINKAGE_NAME (sym)(sym)->ginfo.name); |
| 1121 | sym = NULL((void*)0); |
| 1122 | } |
| 1123 | } |
| 1124 | |
| 1125 | values.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); |
| 1126 | values.nelts = 1; |
| 1127 | |
| 1128 | if (sym && SYMBOL_CLASS (sym)(sym)->aclass == LOC_BLOCK) |
| 1129 | { |
| 1130 | /* Canonicalize this, so it remains resolved for dylib loads. */ |
| 1131 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
| 1132 | build_canonical_line_spec (values.sals, SYMBOL_NATURAL_NAME (sym)(symbol_natural_name (&(sym)->ginfo)), canonical); |
| 1133 | } |
| 1134 | else |
| 1135 | { |
| 1136 | /* The only match was a non-debuggable symbol. */ |
| 1137 | values.sals[0].symtab = 0; |
| 1138 | values.sals[0].line = 0; |
| 1139 | values.sals[0].end = 0; |
| 1140 | values.sals[0].pc = SYMBOL_VALUE_ADDRESS (sym_arr[0])(sym_arr[0])->ginfo.value.address; |
| 1141 | } |
| 1142 | return values; |
| 1143 | } |
| 1144 | |
| 1145 | if (i1 > 1) |
| 1146 | { |
| 1147 | /* More than one match. The user must choose one or more. */ |
| 1148 | return decode_line_2 (sym_arr, i2, funfirstline, canonical); |
| 1149 | } |
| 1150 | |
| 1151 | return values; |
| 1152 | } |
| 1153 | |
| 1154 | /* This handles C++ and Java compound data structures. P should point |
| 1155 | at the first component separator, i.e. double-colon or period. As |
| 1156 | an example, on entrance to this function we could have ARGPTR |
| 1157 | pointing to "AAA::inA::fun" and P pointing to "::inA::fun". */ |
| 1158 | |
| 1159 | static struct symtabs_and_lines |
| 1160 | decode_compound (char **argptr, int funfirstline, char ***canonical, |
| 1161 | char *saved_arg, char *p) |
| 1162 | { |
| 1163 | struct symtabs_and_lines values; |
| 1164 | char *p2; |
| 1165 | char *saved_arg2 = *argptr; |
| 1166 | char *temp_end; |
| 1167 | struct symbol *sym; |
| 1168 | /* The symtab that SYM was found in. */ |
| 1169 | struct symtab *sym_symtab; |
| 1170 | char *copy; |
| 1171 | struct symbol *sym_class; |
| 1172 | struct symbol **sym_arr; |
| 1173 | struct type *t; |
| 1174 | |
| 1175 | /* First check for "global" namespace specification, of the form |
| 1176 | "::foo". If found, skip over the colons and jump to normal |
| 1177 | symbol processing. I.e. the whole line specification starts with |
| 1178 | "::" (note the condition that *argptr == p). */ |
| 1179 | if (p[0] == ':' |
| 1180 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) |
| 1181 | saved_arg2 += 2; |
| 1182 | |
| 1183 | /* Given our example "AAA::inA::fun", we have two cases to consider: |
| 1184 | |
| 1185 | 1) AAA::inA is the name of a class. In that case, presumably it |
| 1186 | has a method called "fun"; we then look up that method using |
| 1187 | find_method. |
| 1188 | |
| 1189 | 2) AAA::inA isn't the name of a class. In that case, either the |
| 1190 | user made a typo or AAA::inA is the name of a namespace. |
| 1191 | Either way, we just look up AAA::inA::fun with lookup_symbol. |
| 1192 | |
| 1193 | Thus, our first task is to find everything before the last set of |
| 1194 | double-colons and figure out if it's the name of a class. So we |
| 1195 | first loop through all of the double-colons. */ |
| 1196 | |
| 1197 | p2 = p; /* Save for restart. */ |
| 1198 | |
| 1199 | /* This is very messy. Following the example above we have now the |
| 1200 | following pointers: |
| 1201 | p -> "::inA::fun" |
| 1202 | argptr -> "AAA::inA::fun |
| 1203 | saved_arg -> "AAA::inA::fun |
| 1204 | saved_arg2 -> "AAA::inA::fun |
| 1205 | p2 -> "::inA::fun". */ |
| 1206 | |
| 1207 | /* In the loop below, with these strings, we'll make 2 passes, each |
| 1208 | is marked in comments.*/ |
| 1209 | |
| 1210 | while (1) |
| 1211 | { |
| 1212 | /* Move pointer up to next possible class/namespace token. */ |
| 1213 | |
| 1214 | p = p2 + 1; /* Restart with old value +1. */ |
| 1215 | |
| 1216 | /* PASS1: at this point p2->"::inA::fun", so p->":inA::fun", |
| 1217 | i.e. if there is a double-colon, p will now point to the |
| 1218 | second colon. */ |
| 1219 | /* PASS2: p2->"::fun", p->":fun" */ |
| 1220 | |
| 1221 | /* Move pointer ahead to next double-colon. */ |
| 1222 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) |
| 1223 | { |
| 1224 | if (p[0] == '<') |
| 1225 | { |
| 1226 | temp_end = find_template_name_end (p); |
| 1227 | if (!temp_end) |
| 1228 | error ("malformed template specification in command"); |
| 1229 | p = temp_end; |
| 1230 | } |
| 1231 | /* Note that, since, at the start of this loop, p would be |
| 1232 | pointing to the second colon in a double-colon, we only |
| 1233 | satisfy the condition below if there is another |
| 1234 | double-colon to the right (after). I.e. there is another |
| 1235 | component that can be a class or a namespace. I.e, if at |
| 1236 | the beginning of this loop (PASS1), we had |
| 1237 | p->":inA::fun", we'll trigger this when p has been |
| 1238 | advanced to point to "::fun". */ |
| 1239 | /* PASS2: we will not trigger this. */ |
| 1240 | else if ((p[0] == ':') && (p[1] == ':')) |
| 1241 | break; /* Found double-colon. */ |
| 1242 | else |
| 1243 | /* PASS2: We'll keep getting here, until p->"", at which point |
| 1244 | we exit this loop. */ |
| 1245 | p++; |
| 1246 | } |
| 1247 | |
| 1248 | if (*p != ':') |
| 1249 | break; /* Out of the while (1). This would happen |
| 1250 | for instance if we have looked up |
| 1251 | unsuccessfully all the components of the |
| 1252 | string, and p->""(PASS2) */ |
| 1253 | |
| 1254 | /* We get here if p points to ' ', '\t', '\'', "::" or ""(i.e |
| 1255 | string ended). */ |
| 1256 | /* Save restart for next time around. */ |
| 1257 | p2 = p; |
| 1258 | /* Restore argptr as it was on entry to this function. */ |
| 1259 | *argptr = saved_arg2; |
| 1260 | /* PASS1: at this point p->"::fun" argptr->"AAA::inA::fun", |
| 1261 | p2->"::fun". */ |
| 1262 | |
| 1263 | /* All ready for next pass through the loop. */ |
| 1264 | } /* while (1) */ |
| 1265 | |
| 1266 | |
| 1267 | /* Start of lookup in the symbol tables. */ |
| 1268 | |
| 1269 | /* Lookup in the symbol table the substring between argptr and |
| 1270 | p. Note, this call changes the value of argptr. */ |
| 1271 | /* Before the call, argptr->"AAA::inA::fun", |
| 1272 | p->"", p2->"::fun". After the call: argptr->"fun", p, p2 |
| 1273 | unchanged. */ |
| 1274 | sym_class = lookup_prefix_sym (argptr, p2); |
| 1275 | |
| 1276 | /* If sym_class has been found, and if "AAA::inA" is a class, then |
| 1277 | we're in case 1 above. So we look up "fun" as a method of that |
| 1278 | class. */ |
| 1279 | if (sym_class && |
| 1280 | (t = check_typedef (SYMBOL_TYPE (sym_class)(sym_class)->type), |
| 1281 | (TYPE_CODE (t)(t)->main_type->code == TYPE_CODE_STRUCT |
| 1282 | || TYPE_CODE (t)(t)->main_type->code == TYPE_CODE_UNION))) |
| 1283 | { |
| 1284 | /* Arg token is not digits => try it as a function name. |
| 1285 | Find the next token (everything up to end or next |
| 1286 | blank). */ |
| 1287 | if (**argptr |
| 1288 | && strchr (get_gdb_completer_quote_characters (), |
| 1289 | **argptr) != NULL((void*)0)) |
| 1290 | { |
| 1291 | p = skip_quoted (*argptr); |
| 1292 | *argptr = *argptr + 1; |
| 1293 | } |
| 1294 | else |
| 1295 | { |
| 1296 | /* At this point argptr->"fun". */ |
| 1297 | p = *argptr; |
| 1298 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') |
| 1299 | p++; |
| 1300 | /* At this point p->"". String ended. */ |
| 1301 | } |
| 1302 | |
| 1303 | /* Allocate our own copy of the substring between argptr and |
| 1304 | p. */ |
| 1305 | copy = (char *) alloca (p - *argptr + 1)__builtin_alloca(p - *argptr + 1); |
| 1306 | memcpy (copy, *argptr, p - *argptr); |
| 1307 | copy[p - *argptr] = '\0'; |
| 1308 | if (p != *argptr |
| 1309 | && copy[p - *argptr - 1] |
| 1310 | && strchr (get_gdb_completer_quote_characters (), |
| 1311 | copy[p - *argptr - 1]) != NULL((void*)0)) |
| 1312 | copy[p - *argptr - 1] = '\0'; |
| 1313 | |
| 1314 | /* At this point copy->"fun", p->"" */ |
| 1315 | |
| 1316 | /* No line number may be specified. */ |
| 1317 | while (*p == ' ' || *p == '\t') |
| 1318 | p++; |
| 1319 | *argptr = p; |
| 1320 | /* At this point arptr->"". */ |
| 1321 | |
| 1322 | /* Look for copy as a method of sym_class. */ |
| 1323 | /* At this point copy->"fun", sym_class is "AAA:inA", |
| 1324 | saved_arg->"AAA::inA::fun". This concludes the scanning of |
| 1325 | the string for possible components matches. If we find it |
| 1326 | here, we return. If not, and we are at the and of the string, |
| 1327 | we'll lookup the whole string in the symbol tables. */ |
| 1328 | |
| 1329 | return find_method (funfirstline, canonical, saved_arg, |
| 1330 | copy, t, sym_class); |
| 1331 | |
| 1332 | } /* End if symbol found */ |
| 1333 | |
| 1334 | |
| 1335 | /* We couldn't find a class, so we're in case 2 above. We check the |
| 1336 | entire name as a symbol instead. */ |
| 1337 | |
| 1338 | copy = (char *) alloca (p - saved_arg2 + 1)__builtin_alloca(p - saved_arg2 + 1); |
| 1339 | memcpy (copy, saved_arg2, p - saved_arg2); |
| 1340 | /* Note: if is_quoted should be true, we snuff out quote here |
| 1341 | anyway. */ |
| 1342 | copy[p - saved_arg2] = '\000'; |
| 1343 | /* Set argptr to skip over the name. */ |
| 1344 | *argptr = (*p == '\'') ? p + 1 : p; |
| 1345 | |
| 1346 | /* Look up entire name */ |
| 1347 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0, &sym_symtab); |
| 1348 | if (sym) |
| 1349 | return symbol_found (funfirstline, canonical, copy, sym, |
| 1350 | NULL((void*)0), sym_symtab); |
| 1351 | |
| 1352 | /* Couldn't find any interpretation as classes/namespaces, so give |
| 1353 | up. The quotes are important if copy is empty. */ |
| 1354 | cplusplus_error (saved_arg, |
| 1355 | "Can't find member of namespace, class, struct, or union named \"%s\"\n", |
| 1356 | copy); |
| 1357 | } |
| 1358 | |
| 1359 | /* Next come some helper functions for decode_compound. */ |
| 1360 | |
| 1361 | /* Return the symbol corresponding to the substring of *ARGPTR ending |
| 1362 | at P, allowing whitespace. Also, advance *ARGPTR past the symbol |
| 1363 | name in question, the compound object separator ("::" or "."), and |
| 1364 | whitespace. Note that *ARGPTR is changed whether or not the |
| 1365 | lookup_symbol call finds anything (i.e we return NULL). As an |
| 1366 | example, say ARGPTR is "AAA::inA::fun" and P is "::inA::fun". */ |
| 1367 | |
| 1368 | static struct symbol * |
| 1369 | lookup_prefix_sym (char **argptr, char *p) |
| 1370 | { |
| 1371 | char *p1; |
| 1372 | char *copy; |
| 1373 | |
| 1374 | /* Extract the class name. */ |
| 1375 | p1 = p; |
| 1376 | while (p != *argptr && p[-1] == ' ') |
| 1377 | --p; |
| 1378 | copy = (char *) alloca (p - *argptr + 1)__builtin_alloca(p - *argptr + 1); |
| 1379 | memcpy (copy, *argptr, p - *argptr); |
| 1380 | copy[p - *argptr] = 0; |
| 1381 | |
| 1382 | /* Discard the class name from the argptr. */ |
| 1383 | p = p1 + (p1[0] == ':' ? 2 : 1); |
| 1384 | while (*p == ' ' || *p == '\t') |
| 1385 | p++; |
| 1386 | *argptr = p; |
| 1387 | |
| 1388 | /* At this point p1->"::inA::fun", p->"inA::fun" copy->"AAA", |
| 1389 | argptr->"inA::fun" */ |
| 1390 | |
| 1391 | return lookup_symbol (copy, 0, STRUCT_DOMAIN, 0, |
| 1392 | (struct symtab **) NULL((void*)0)); |
| 1393 | } |
| 1394 | |
| 1395 | /* This finds the method COPY in the class whose type is T and whose |
| 1396 | symbol is SYM_CLASS. */ |
| 1397 | |
| 1398 | static struct symtabs_and_lines |
| 1399 | find_method (int funfirstline, char ***canonical, char *saved_arg, |
| 1400 | char *copy, struct type *t, struct symbol *sym_class) |
| 1401 | { |
| 1402 | struct symtabs_and_lines values; |
| 1403 | struct symbol *sym = 0; |
| 1404 | int i1; /* Counter for the symbol array. */ |
| 1405 | struct symbol **sym_arr = alloca (total_number_of_methods (t)__builtin_alloca(total_number_of_methods (t) * sizeof (struct symbol *)) |
| 1406 | * sizeof (struct symbol *))__builtin_alloca(total_number_of_methods (t) * sizeof (struct symbol *)); |
| 1407 | |
| 1408 | /* Find all methods with a matching name, and put them in |
| 1409 | sym_arr. */ |
| 1410 | |
| 1411 | i1 = collect_methods (copy, t, sym_arr); |
| 1412 | |
| 1413 | if (i1 == 1) |
| 1414 | { |
| 1415 | /* There is exactly one field with that name. */ |
| 1416 | sym = sym_arr[0]; |
| 1417 | |
| 1418 | if (sym && SYMBOL_CLASS (sym)(sym)->aclass == LOC_BLOCK) |
| 1419 | { |
| 1420 | values.sals = (struct symtab_and_line *) |
| 1421 | xmalloc (sizeof (struct symtab_and_line)); |
| 1422 | values.nelts = 1; |
| 1423 | values.sals[0] = find_function_start_sal (sym, |
| 1424 | funfirstline); |
| 1425 | } |
| 1426 | else |
| 1427 | { |
| 1428 | values.nelts = 0; |
| 1429 | } |
| 1430 | return values; |
| 1431 | } |
| 1432 | if (i1 > 0) |
| 1433 | { |
| 1434 | /* There is more than one field with that name |
| 1435 | (overloaded). Ask the user which one to use. */ |
| 1436 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); |
| 1437 | } |
| 1438 | else |
| 1439 | { |
| 1440 | char *tmp; |
| 1441 | |
| 1442 | if (is_operator_name (copy)) |
| 1443 | { |
| 1444 | tmp = (char *) alloca (strlen (copy + 3) + 9)__builtin_alloca(strlen (copy + 3) + 9); |
| 1445 | strcpy (tmp, "operator "); |
| 1446 | strcat (tmp, copy + 3); |
| 1447 | } |
| 1448 | else |
| 1449 | tmp = copy; |
| 1450 | if (tmp[0] == '~') |
| 1451 | cplusplus_error (saved_arg, |
| 1452 | "the class `%s' does not have destructor defined\n", |
| 1453 | SYMBOL_PRINT_NAME (sym_class)(demangle ? (symbol_natural_name (&(sym_class)->ginfo) ) : (sym_class)->ginfo.name)); |
| 1454 | else |
| 1455 | cplusplus_error (saved_arg, |
| 1456 | "the class %s does not have any method named %s\n", |
| 1457 | SYMBOL_PRINT_NAME (sym_class)(demangle ? (symbol_natural_name (&(sym_class)->ginfo) ) : (sym_class)->ginfo.name), tmp); |
| 1458 | } |
| 1459 | } |
| 1460 | |
| 1461 | /* Find all methods named COPY in the class whose type is T, and put |
| 1462 | them in SYM_ARR. Return the number of methods found. */ |
| 1463 | |
| 1464 | static int |
| 1465 | collect_methods (char *copy, struct type *t, |
| 1466 | struct symbol **sym_arr) |
| 1467 | { |
| 1468 | int i1 = 0; /* Counter for the symbol array. */ |
| 1469 | |
| 1470 | if (destructor_name_p (copy, t)) |
| 1471 | { |
| 1472 | /* Destructors are a special case. */ |
| 1473 | int m_index, f_index; |
| 1474 | |
| 1475 | if (get_destructor_fn_field (t, &m_index, &f_index)) |
| 1476 | { |
| 1477 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [m_index].fn_fields; |
| 1478 | |
| 1479 | sym_arr[i1] = |
| 1480 | lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index)(f)[f_index].physname, |
| 1481 | NULL((void*)0), VAR_DOMAIN, (int *) NULL((void*)0), |
| 1482 | (struct symtab **) NULL((void*)0)); |
| 1483 | if (sym_arr[i1]) |
| 1484 | i1++; |
| 1485 | } |
| 1486 | } |
| 1487 | else |
| 1488 | i1 = find_methods (t, copy, sym_arr); |
| 1489 | |
| 1490 | return i1; |
| 1491 | } |
| 1492 | |
| 1493 | |
| 1494 | |
| 1495 | /* Return the symtab associated to the filename given by the substring |
| 1496 | of *ARGPTR ending at P, and advance ARGPTR past that filename. If |
| 1497 | NOT_FOUND_PTR is not null and the source file is not found, store |
| 1498 | boolean true at the location pointed to and do not issue an |
| 1499 | error message. */ |
| 1500 | |
| 1501 | static struct symtab * |
| 1502 | symtab_from_filename (char **argptr, char *p, int is_quote_enclosed, |
| 1503 | int *not_found_ptr) |
| 1504 | { |
| 1505 | char *p1; |
| 1506 | char *copy; |
| 1507 | struct symtab *file_symtab; |
| 1508 | |
| 1509 | p1 = p; |
| 1510 | while (p != *argptr && p[-1] == ' ') |
| 1511 | --p; |
| 1512 | if ((*p == '"') && is_quote_enclosed) |
| 1513 | --p; |
| 1514 | copy = (char *) alloca (p - *argptr + 1)__builtin_alloca(p - *argptr + 1); |
| 1515 | memcpy (copy, *argptr, p - *argptr); |
| 1516 | /* It may have the ending quote right after the file name. */ |
| 1517 | if (is_quote_enclosed && copy[p - *argptr - 1] == '"') |
| 1518 | copy[p - *argptr - 1] = 0; |
| 1519 | else |
| 1520 | copy[p - *argptr] = 0; |
| 1521 | |
| 1522 | /* Find that file's data. */ |
| 1523 | file_symtab = lookup_symtab (copy); |
| 1524 | if (file_symtab == 0) |
| 1525 | { |
| 1526 | if (!have_full_symbols () && !have_partial_symbols ()) |
| 1527 | error ("No symbol table is loaded. Use the \"file\" command."); |
| 1528 | if (not_found_ptr) |
| 1529 | { |
| 1530 | *not_found_ptr = 1; |
| 1531 | /* The caller has indicated that it wishes quiet notification of any |
| 1532 | error where the function or file is not found. A call to |
| 1533 | error_silent causes an error to occur, but it does not issue |
| 1534 | the supplied message. The message can be manually output by |
| 1535 | the caller, if desired. This is used, for example, when |
| 1536 | attempting to set breakpoints for functions in shared libraries |
| 1537 | that have not yet been loaded. */ |
| 1538 | error_silent ("No source file named %s.", copy); |
| 1539 | } |
| 1540 | error ("No source file named %s.", copy); |
| 1541 | } |
| 1542 | |
| 1543 | /* Discard the file name from the arg. */ |
| 1544 | p = p1 + 1; |
| 1545 | while (*p == ' ' || *p == '\t') |
| 1546 | p++; |
| 1547 | *argptr = p; |
| 1548 | |
| 1549 | return file_symtab; |
| 1550 | } |
| 1551 | |
| 1552 | |
| 1553 | |
| 1554 | /* This decodes a line where the argument is all digits (possibly |
| 1555 | preceded by a sign). Q should point to the end of those digits; |
| 1556 | the other arguments are as usual. */ |
| 1557 | |
| 1558 | static struct symtabs_and_lines |
| 1559 | decode_all_digits (char **argptr, struct symtab *default_symtab, |
| 1560 | int default_line, char ***canonical, |
| 1561 | struct symtab *file_symtab, char *q) |
| 1562 | |
| 1563 | { |
| 1564 | struct symtabs_and_lines values; |
| 1565 | struct symtab_and_line val; |
| 1566 | |
| 1567 | enum sign |
| 1568 | { |
| 1569 | none, plus, minus |
| 1570 | } |
| 1571 | sign = none; |
| 1572 | |
| 1573 | /* We might need a canonical line spec if no file was specified. */ |
| 1574 | int need_canonical = (file_symtab == 0) ? 1 : 0; |
| 1575 | |
| 1576 | init_sal (&val); |
| 1577 | |
| 1578 | /* This is where we need to make sure that we have good defaults. |
| 1579 | We must guarantee that this section of code is never executed |
| 1580 | when we are called with just a function name, since |
| 1581 | set_default_source_symtab_and_line uses |
| 1582 | select_source_symtab that calls us with such an argument. */ |
| 1583 | |
| 1584 | if (file_symtab == 0 && default_symtab == 0) |
| 1585 | { |
| 1586 | /* Make sure we have at least a default source file. */ |
| 1587 | set_default_source_symtab_and_line (); |
| 1588 | initialize_defaults (&default_symtab, &default_line); |
| 1589 | } |
| 1590 | |
| 1591 | if (**argptr == '+') |
| 1592 | sign = plus, (*argptr)++; |
| 1593 | else if (**argptr == '-') |
| 1594 | sign = minus, (*argptr)++; |
| 1595 | val.line = atoi (*argptr); |
| 1596 | switch (sign) |
| 1597 | { |
| 1598 | case plus: |
| 1599 | if (q == *argptr) |
| 1600 | val.line = 5; |
| 1601 | if (file_symtab == 0) |
| 1602 | val.line = default_line + val.line; |
| 1603 | break; |
| 1604 | case minus: |
| 1605 | if (q == *argptr) |
| 1606 | val.line = 15; |
| 1607 | if (file_symtab == 0) |
| 1608 | val.line = default_line - val.line; |
| 1609 | else |
| 1610 | val.line = 1; |
| 1611 | break; |
| 1612 | case none: |
| 1613 | break; /* No need to adjust val.line. */ |
| 1614 | } |
| 1615 | |
| 1616 | while (*q == ' ' || *q == '\t') |
| 1617 | q++; |
| 1618 | *argptr = q; |
| 1619 | if (file_symtab == 0) |
| 1620 | file_symtab = default_symtab; |
| 1621 | |
| 1622 | /* It is possible that this source file has more than one symtab, |
| 1623 | and that the new line number specification has moved us from the |
| 1624 | default (in file_symtab) to a new one. */ |
| 1625 | val.symtab = find_line_symtab (file_symtab, val.line, NULL((void*)0), NULL((void*)0)); |
| 1626 | if (val.symtab == 0) |
| 1627 | val.symtab = file_symtab; |
| 1628 | |
| 1629 | val.pc = 0; |
| 1630 | values.sals = (struct symtab_and_line *) |
| 1631 | xmalloc (sizeof (struct symtab_and_line)); |
| 1632 | values.sals[0] = val; |
| 1633 | values.nelts = 1; |
| 1634 | if (need_canonical) |
| 1635 | build_canonical_line_spec (values.sals, NULL((void*)0), canonical); |
| 1636 | return values; |
| 1637 | } |
| 1638 | |
| 1639 | |
| 1640 | |
| 1641 | /* Decode a linespec starting with a dollar sign. */ |
| 1642 | |
| 1643 | static struct symtabs_and_lines |
| 1644 | decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab, |
| 1645 | char ***canonical, struct symtab *file_symtab) |
| 1646 | { |
| 1647 | struct value *valx; |
| 1648 | int index = 0; |
| 1649 | int need_canonical = 0; |
| 1650 | struct symtabs_and_lines values; |
| 1651 | struct symtab_and_line val; |
| 1652 | char *p; |
| 1653 | struct symbol *sym; |
| 1654 | /* The symtab that SYM was found in. */ |
| 1655 | struct symtab *sym_symtab; |
| 1656 | struct minimal_symbol *msymbol; |
| 1657 | |
| 1658 | p = (copy[1] == '$') ? copy + 2 : copy + 1; |
| 1659 | while (*p >= '0' && *p <= '9') |
| 1660 | p++; |
| 1661 | if (!*p) /* Reached end of token without hitting non-digit. */ |
| 1662 | { |
| 1663 | /* We have a value history reference. */ |
| 1664 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); |
| 1665 | valx = access_value_history ((copy[1] == '$') ? -index : index); |
| 1666 | if (TYPE_CODE (VALUE_TYPE (valx))((valx)->type)->main_type->code != TYPE_CODE_INT) |
| 1667 | error ("History values used in line specs must have integer values."); |
| 1668 | } |
| 1669 | else |
| 1670 | { |
| 1671 | /* Not all digits -- may be user variable/function or a |
| 1672 | convenience variable. */ |
| 1673 | |
| 1674 | /* Look up entire name as a symbol first. */ |
| 1675 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0, &sym_symtab); |
| 1676 | file_symtab = (struct symtab *) 0; |
| 1677 | need_canonical = 1; |
| 1678 | /* Symbol was found --> jump to normal symbol processing. */ |
| 1679 | if (sym) |
| 1680 | return symbol_found (funfirstline, canonical, copy, sym, |
| 1681 | NULL((void*)0), sym_symtab); |
| 1682 | |
| 1683 | /* If symbol was not found, look in minimal symbol tables. */ |
| 1684 | msymbol = lookup_minimal_symbol (copy, NULL((void*)0), NULL((void*)0)); |
| 1685 | /* Min symbol was found --> jump to minsym processing. */ |
| 1686 | if (msymbol) |
| 1687 | return minsym_found (funfirstline, msymbol); |
| 1688 | |
| 1689 | /* Not a user variable or function -- must be convenience variable. */ |
| 1690 | need_canonical = (file_symtab == 0) ? 1 : 0; |
| 1691 | valx = value_of_internalvar (lookup_internalvar (copy + 1)); |
| 1692 | if (TYPE_CODE (VALUE_TYPE (valx))((valx)->type)->main_type->code != TYPE_CODE_INT) |
| 1693 | error ("Convenience variables used in line specs must have integer values."); |
| 1694 | } |
| 1695 | |
| 1696 | init_sal (&val); |
| 1697 | |
| 1698 | /* Either history value or convenience value from above, in valx. */ |
| 1699 | val.symtab = file_symtab ? file_symtab : default_symtab; |
| 1700 | val.line = value_as_long (valx); |
| 1701 | val.pc = 0; |
| 1702 | |
| 1703 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); |
| 1704 | values.sals[0] = val; |
| 1705 | values.nelts = 1; |
| 1706 | |
| 1707 | if (need_canonical) |
| 1708 | build_canonical_line_spec (values.sals, NULL((void*)0), canonical); |
| 1709 | |
| 1710 | return values; |
| 1711 | } |
| 1712 | |
| 1713 | |
| 1714 | |
| 1715 | /* Decode a linespec that's a variable. If FILE_SYMTAB is non-NULL, |
| 1716 | look in that symtab's static variables first. If NOT_FOUND_PTR is not NULL and |
| 1717 | the function cannot be found, store boolean true in the location pointed to |
| 1718 | and do not issue an error message. */ |
| 1719 | |
| 1720 | static struct symtabs_and_lines |
| 1721 | decode_variable (char *copy, int funfirstline, char ***canonical, |
| 1722 | struct symtab *file_symtab, int *not_found_ptr) |
| 1723 | { |
| 1724 | struct symbol *sym; |
| 1725 | /* The symtab that SYM was found in. */ |
| 1726 | struct symtab *sym_symtab; |
| 1727 | |
| 1728 | struct minimal_symbol *msymbol; |
| 1729 | |
| 1730 | sym = lookup_symbol (copy, |
| 1731 | (file_symtab |
| 1732 | ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab),((file_symtab)->blockvector)->block[STATIC_BLOCK] |
| 1733 | STATIC_BLOCK)((file_symtab)->blockvector)->block[STATIC_BLOCK] |
| 1734 | : get_selected_block (0)), |
| 1735 | VAR_DOMAIN, 0, &sym_symtab); |
| 1736 | |
| 1737 | if (sym != NULL((void*)0)) |
| 1738 | return symbol_found (funfirstline, canonical, copy, sym, |
| 1739 | file_symtab, sym_symtab); |
| 1740 | |
| 1741 | msymbol = lookup_minimal_symbol (copy, NULL((void*)0), NULL((void*)0)); |
| 1742 | |
| 1743 | if (msymbol != NULL((void*)0)) |
| 1744 | return minsym_found (funfirstline, msymbol); |
| 1745 | |
| 1746 | if (!have_full_symbols () && |
| 1747 | !have_partial_symbols () && !have_minimal_symbols ()) |
| 1748 | error ("No symbol table is loaded. Use the \"file\" command."); |
| 1749 | |
| 1750 | if (not_found_ptr) |
| 1751 | { |
| 1752 | *not_found_ptr = 1; |
| 1753 | /* The caller has indicated that it wishes quiet notification of any |
| 1754 | error where the function or file is not found. A call to |
| 1755 | error_silent causes an error to occur, but it does not issue |
| 1756 | the supplied message. The message can be manually output by |
| 1757 | the caller, if desired. This is used, for example, when |
| 1758 | attempting to set breakpoints for functions in shared libraries |
| 1759 | that have not yet been loaded. */ |
| 1760 | error_silent ("Function \"%s\" not defined.", copy); |
| 1761 | } |
| 1762 | |
| 1763 | error ("Function \"%s\" not defined.", copy); |
| 1764 | } |
| 1765 | |
| 1766 | |
| 1767 | |
| 1768 | |
| 1769 | /* Now come some functions that are called from multiple places within |
| 1770 | decode_line_1. */ |
| 1771 | |
| 1772 | /* We've found a symbol SYM to associate with our linespec; build a |
| 1773 | corresponding struct symtabs_and_lines. */ |
| 1774 | |
| 1775 | static struct symtabs_and_lines |
| 1776 | symbol_found (int funfirstline, char ***canonical, char *copy, |
| 1777 | struct symbol *sym, struct symtab *file_symtab, |
| 1778 | struct symtab *sym_symtab) |
| 1779 | { |
| 1780 | struct symtabs_and_lines values; |
| 1781 | |
| 1782 | if (SYMBOL_CLASS (sym)(sym)->aclass == LOC_BLOCK) |
| 1783 | { |
| 1784 | /* Arg is the name of a function */ |
| 1785 | values.sals = (struct symtab_and_line *) |
| 1786 | xmalloc (sizeof (struct symtab_and_line)); |
| 1787 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
| 1788 | values.nelts = 1; |
| 1789 | |
| 1790 | /* Don't use the SYMBOL_LINE; if used at all it points to |
| 1791 | the line containing the parameters or thereabouts, not |
| 1792 | the first line of code. */ |
| 1793 | |
| 1794 | /* We might need a canonical line spec if it is a static |
| 1795 | function. */ |
| 1796 | if (file_symtab == 0) |
| 1797 | { |
| 1798 | struct blockvector *bv = BLOCKVECTOR (sym_symtab)(sym_symtab)->blockvector; |
| 1799 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)(bv)->block[STATIC_BLOCK]; |
| 1800 | if (lookup_block_symbol (b, copy, NULL((void*)0), VAR_DOMAIN) != NULL((void*)0)) |
| 1801 | build_canonical_line_spec (values.sals, copy, canonical); |
| 1802 | } |
| 1803 | return values; |
| 1804 | } |
| 1805 | else |
| 1806 | { |
| 1807 | if (funfirstline) |
| 1808 | error ("\"%s\" is not a function", copy); |
| 1809 | else if (SYMBOL_LINE (sym)(sym)->line != 0) |
| 1810 | { |
| 1811 | /* We know its line number. */ |
| 1812 | values.sals = (struct symtab_and_line *) |
| 1813 | xmalloc (sizeof (struct symtab_and_line)); |
| 1814 | values.nelts = 1; |
| 1815 | memset (&values.sals[0], 0, sizeof (values.sals[0])); |
| 1816 | values.sals[0].symtab = sym_symtab; |
| 1817 | values.sals[0].line = SYMBOL_LINE (sym)(sym)->line; |
| 1818 | return values; |
| 1819 | } |
| 1820 | else |
| 1821 | /* This can happen if it is compiled with a compiler which doesn't |
| 1822 | put out line numbers for variables. */ |
| 1823 | /* FIXME: Shouldn't we just set .line and .symtab to zero |
| 1824 | and return? For example, "info line foo" could print |
| 1825 | the address. */ |
| 1826 | error ("Line number not known for symbol \"%s\"", copy); |
| 1827 | } |
| 1828 | } |
| 1829 | |
| 1830 | /* We've found a minimal symbol MSYMBOL to associate with our |
| 1831 | linespec; build a corresponding struct symtabs_and_lines. */ |
| 1832 | |
| 1833 | static struct symtabs_and_lines |
| 1834 | minsym_found (int funfirstline, struct minimal_symbol *msymbol) |
| 1835 | { |
| 1836 | struct symtabs_and_lines values; |
| 1837 | |
| 1838 | values.sals = (struct symtab_and_line *) |
| 1839 | xmalloc (sizeof (struct symtab_and_line)); |
| 1840 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol)(msymbol)->ginfo.value.address, |
| 1841 | (struct bfd_section *) 0, 0); |
| 1842 | values.sals[0].section = SYMBOL_BFD_SECTION (msymbol)(msymbol)->ginfo.bfd_section; |
| 1843 | if (funfirstline) |
| 1844 | { |
| 1845 | values.sals[0].pc += DEPRECATED_FUNCTION_START_OFFSET(gdbarch_deprecated_function_start_offset (current_gdbarch)); |
| 1846 | values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc)(gdbarch_skip_prologue (current_gdbarch, values.sals[0].pc)); |
| 1847 | } |
| 1848 | values.nelts = 1; |
| 1849 | return values; |
| 1850 | } |