| 1 | /* Parser for linespec for the GNU debugger, GDB. |
| 2 | |
| 3 | Copyright (C) 1986-2015 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "symtab.h" |
| 22 | #include "frame.h" |
| 23 | #include "command.h" |
| 24 | #include "symfile.h" |
| 25 | #include "objfiles.h" |
| 26 | #include "source.h" |
| 27 | #include "demangle.h" |
| 28 | #include "value.h" |
| 29 | #include "completer.h" |
| 30 | #include "cp-abi.h" |
| 31 | #include "cp-support.h" |
| 32 | #include "parser-defs.h" |
| 33 | #include "block.h" |
| 34 | #include "objc-lang.h" |
| 35 | #include "linespec.h" |
| 36 | #include "language.h" |
| 37 | #include "interps.h" |
| 38 | #include "mi/mi-cmds.h" |
| 39 | #include "target.h" |
| 40 | #include "arch-utils.h" |
| 41 | #include <ctype.h> |
| 42 | #include "cli/cli-utils.h" |
| 43 | #include "filenames.h" |
| 44 | #include "ada-lang.h" |
| 45 | #include "stack.h" |
| 46 | |
| 47 | typedef struct symbol *symbolp; |
| 48 | DEF_VEC_P (symbolp); |
| 49 | |
| 50 | typedef struct type *typep; |
| 51 | DEF_VEC_P (typep); |
| 52 | |
| 53 | /* An address entry is used to ensure that any given location is only |
| 54 | added to the result a single time. It holds an address and the |
| 55 | program space from which the address came. */ |
| 56 | |
| 57 | struct address_entry |
| 58 | { |
| 59 | struct program_space *pspace; |
| 60 | CORE_ADDR addr; |
| 61 | }; |
| 62 | |
| 63 | typedef struct bound_minimal_symbol bound_minimal_symbol_d; |
| 64 | |
| 65 | DEF_VEC_O (bound_minimal_symbol_d); |
| 66 | |
| 67 | /* An enumeration of possible signs for a line offset. */ |
| 68 | enum offset_relative_sign |
| 69 | { |
| 70 | /* No sign */ |
| 71 | LINE_OFFSET_NONE, |
| 72 | |
| 73 | /* A plus sign ("+") */ |
| 74 | LINE_OFFSET_PLUS, |
| 75 | |
| 76 | /* A minus sign ("-") */ |
| 77 | LINE_OFFSET_MINUS, |
| 78 | |
| 79 | /* A special "sign" for unspecified offset. */ |
| 80 | LINE_OFFSET_UNKNOWN |
| 81 | }; |
| 82 | |
| 83 | /* A line offset in a linespec. */ |
| 84 | |
| 85 | struct line_offset |
| 86 | { |
| 87 | /* Line offset and any specified sign. */ |
| 88 | int offset; |
| 89 | enum offset_relative_sign sign; |
| 90 | }; |
| 91 | |
| 92 | /* A linespec. Elements of this structure are filled in by a parser |
| 93 | (either parse_linespec or some other function). The structure is |
| 94 | then converted into SALs by convert_linespec_to_sals. */ |
| 95 | |
| 96 | struct linespec |
| 97 | { |
| 98 | /* An expression and the resulting PC. Specifying an expression |
| 99 | currently precludes the use of other members. */ |
| 100 | |
| 101 | /* The expression entered by the user. */ |
| 102 | const char *expression; |
| 103 | |
| 104 | /* The resulting PC expression derived from evaluating EXPRESSION. */ |
| 105 | CORE_ADDR expr_pc; |
| 106 | |
| 107 | /* Any specified file symtabs. */ |
| 108 | |
| 109 | /* The user-supplied source filename or NULL if none was specified. */ |
| 110 | const char *source_filename; |
| 111 | |
| 112 | /* The list of symtabs to search to which to limit the search. May not |
| 113 | be NULL. If SOURCE_FILENAME is NULL (no user-specified filename), |
| 114 | FILE_SYMTABS should contain one single NULL member. This will |
| 115 | cause the code to use the default symtab. */ |
| 116 | VEC (symtab_ptr) *file_symtabs; |
| 117 | |
| 118 | /* The name of a function or method and any matching symbols. */ |
| 119 | |
| 120 | /* The user-specified function name. If no function name was |
| 121 | supplied, this may be NULL. */ |
| 122 | const char *function_name; |
| 123 | |
| 124 | /* A list of matching function symbols and minimal symbols. Both lists |
| 125 | may be NULL if no matching symbols were found. */ |
| 126 | VEC (symbolp) *function_symbols; |
| 127 | VEC (bound_minimal_symbol_d) *minimal_symbols; |
| 128 | |
| 129 | /* The name of a label and matching symbols. */ |
| 130 | |
| 131 | /* The user-specified label name. */ |
| 132 | const char *label_name; |
| 133 | |
| 134 | /* A structure of matching label symbols and the corresponding |
| 135 | function symbol in which the label was found. Both may be NULL |
| 136 | or both must be non-NULL. */ |
| 137 | struct |
| 138 | { |
| 139 | VEC (symbolp) *label_symbols; |
| 140 | VEC (symbolp) *function_symbols; |
| 141 | } labels; |
| 142 | |
| 143 | /* Line offset. It may be LINE_OFFSET_UNKNOWN, meaning that no |
| 144 | offset was specified. */ |
| 145 | struct line_offset line_offset; |
| 146 | }; |
| 147 | typedef struct linespec *linespec_p; |
| 148 | |
| 149 | /* A canonical linespec represented as a symtab-related string. |
| 150 | |
| 151 | Each entry represents the "SYMTAB:SUFFIX" linespec string. |
| 152 | SYMTAB can be converted for example by symtab_to_fullname or |
| 153 | symtab_to_filename_for_display as needed. */ |
| 154 | |
| 155 | struct linespec_canonical_name |
| 156 | { |
| 157 | /* Remaining text part of the linespec string. */ |
| 158 | char *suffix; |
| 159 | |
| 160 | /* If NULL then SUFFIX is the whole linespec string. */ |
| 161 | struct symtab *symtab; |
| 162 | }; |
| 163 | |
| 164 | /* An instance of this is used to keep all state while linespec |
| 165 | operates. This instance is passed around as a 'this' pointer to |
| 166 | the various implementation methods. */ |
| 167 | |
| 168 | struct linespec_state |
| 169 | { |
| 170 | /* The language in use during linespec processing. */ |
| 171 | const struct language_defn *language; |
| 172 | |
| 173 | /* The program space as seen when the module was entered. */ |
| 174 | struct program_space *program_space; |
| 175 | |
| 176 | /* The default symtab to use, if no other symtab is specified. */ |
| 177 | struct symtab *default_symtab; |
| 178 | |
| 179 | /* The default line to use. */ |
| 180 | int default_line; |
| 181 | |
| 182 | /* The 'funfirstline' value that was passed in to decode_line_1 or |
| 183 | decode_line_full. */ |
| 184 | int funfirstline; |
| 185 | |
| 186 | /* Nonzero if we are running in 'list' mode; see decode_line_list. */ |
| 187 | int list_mode; |
| 188 | |
| 189 | /* The 'canonical' value passed to decode_line_full, or NULL. */ |
| 190 | struct linespec_result *canonical; |
| 191 | |
| 192 | /* Canonical strings that mirror the symtabs_and_lines result. */ |
| 193 | struct linespec_canonical_name *canonical_names; |
| 194 | |
| 195 | /* This is a set of address_entry objects which is used to prevent |
| 196 | duplicate symbols from being entered into the result. */ |
| 197 | htab_t addr_set; |
| 198 | }; |
| 199 | |
| 200 | /* This is a helper object that is used when collecting symbols into a |
| 201 | result. */ |
| 202 | |
| 203 | struct collect_info |
| 204 | { |
| 205 | /* The linespec object in use. */ |
| 206 | struct linespec_state *state; |
| 207 | |
| 208 | /* A list of symtabs to which to restrict matches. */ |
| 209 | VEC (symtab_ptr) *file_symtabs; |
| 210 | |
| 211 | /* The result being accumulated. */ |
| 212 | struct |
| 213 | { |
| 214 | VEC (symbolp) *symbols; |
| 215 | VEC (bound_minimal_symbol_d) *minimal_symbols; |
| 216 | } result; |
| 217 | }; |
| 218 | |
| 219 | /* Token types */ |
| 220 | |
| 221 | enum ls_token_type |
| 222 | { |
| 223 | /* A keyword */ |
| 224 | LSTOKEN_KEYWORD = 0, |
| 225 | |
| 226 | /* A colon "separator" */ |
| 227 | LSTOKEN_COLON, |
| 228 | |
| 229 | /* A string */ |
| 230 | LSTOKEN_STRING, |
| 231 | |
| 232 | /* A number */ |
| 233 | LSTOKEN_NUMBER, |
| 234 | |
| 235 | /* A comma */ |
| 236 | LSTOKEN_COMMA, |
| 237 | |
| 238 | /* EOI (end of input) */ |
| 239 | LSTOKEN_EOI, |
| 240 | |
| 241 | /* Consumed token */ |
| 242 | LSTOKEN_CONSUMED |
| 243 | }; |
| 244 | typedef enum ls_token_type linespec_token_type; |
| 245 | |
| 246 | /* List of keywords */ |
| 247 | |
| 248 | static const char * const linespec_keywords[] = { "if", "thread", "task" }; |
| 249 | |
| 250 | /* A token of the linespec lexer */ |
| 251 | |
| 252 | struct ls_token |
| 253 | { |
| 254 | /* The type of the token */ |
| 255 | linespec_token_type type; |
| 256 | |
| 257 | /* Data for the token */ |
| 258 | union |
| 259 | { |
| 260 | /* A string, given as a stoken */ |
| 261 | struct stoken string; |
| 262 | |
| 263 | /* A keyword */ |
| 264 | const char *keyword; |
| 265 | } data; |
| 266 | }; |
| 267 | typedef struct ls_token linespec_token; |
| 268 | |
| 269 | #define LS_TOKEN_STOKEN(TOK) (TOK).data.string |
| 270 | #define LS_TOKEN_KEYWORD(TOK) (TOK).data.keyword |
| 271 | |
| 272 | /* An instance of the linespec parser. */ |
| 273 | |
| 274 | struct ls_parser |
| 275 | { |
| 276 | /* Lexer internal data */ |
| 277 | struct |
| 278 | { |
| 279 | /* Save head of input stream. */ |
| 280 | const char *saved_arg; |
| 281 | |
| 282 | /* Head of the input stream. */ |
| 283 | const char **stream; |
| 284 | #define PARSER_STREAM(P) (*(P)->lexer.stream) |
| 285 | |
| 286 | /* The current token. */ |
| 287 | linespec_token current; |
| 288 | } lexer; |
| 289 | |
| 290 | /* Is the entire linespec quote-enclosed? */ |
| 291 | int is_quote_enclosed; |
| 292 | |
| 293 | /* Is a keyword syntactically valid at this point? |
| 294 | In, e.g., "break thread thread 1", the leading "keyword" must not |
| 295 | be interpreted as such. */ |
| 296 | int keyword_ok; |
| 297 | |
| 298 | /* The state of the parse. */ |
| 299 | struct linespec_state state; |
| 300 | #define PARSER_STATE(PPTR) (&(PPTR)->state) |
| 301 | |
| 302 | /* The result of the parse. */ |
| 303 | struct linespec result; |
| 304 | #define PARSER_RESULT(PPTR) (&(PPTR)->result) |
| 305 | }; |
| 306 | typedef struct ls_parser linespec_parser; |
| 307 | |
| 308 | /* Prototypes for local functions. */ |
| 309 | |
| 310 | static void iterate_over_file_blocks (struct symtab *symtab, |
| 311 | const char *name, domain_enum domain, |
| 312 | symbol_found_callback_ftype *callback, |
| 313 | void *data); |
| 314 | |
| 315 | static void initialize_defaults (struct symtab **default_symtab, |
| 316 | int *default_line); |
| 317 | |
| 318 | static CORE_ADDR linespec_expression_to_pc (const char **exp_ptr); |
| 319 | |
| 320 | static struct symtabs_and_lines decode_objc (struct linespec_state *self, |
| 321 | linespec_p ls, |
| 322 | const char **argptr); |
| 323 | |
| 324 | static VEC (symtab_ptr) *symtabs_from_filename (const char *); |
| 325 | |
| 326 | static VEC (symbolp) *find_label_symbols (struct linespec_state *self, |
| 327 | VEC (symbolp) *function_symbols, |
| 328 | VEC (symbolp) **label_funcs_ret, |
| 329 | const char *name); |
| 330 | |
| 331 | static void find_linespec_symbols (struct linespec_state *self, |
| 332 | VEC (symtab_ptr) *file_symtabs, |
| 333 | const char *name, |
| 334 | VEC (symbolp) **symbols, |
| 335 | VEC (bound_minimal_symbol_d) **minsyms); |
| 336 | |
| 337 | static struct line_offset |
| 338 | linespec_parse_variable (struct linespec_state *self, |
| 339 | const char *variable); |
| 340 | |
| 341 | static int symbol_to_sal (struct symtab_and_line *result, |
| 342 | int funfirstline, struct symbol *sym); |
| 343 | |
| 344 | static void add_matching_symbols_to_info (const char *name, |
| 345 | struct collect_info *info, |
| 346 | struct program_space *pspace); |
| 347 | |
| 348 | static void add_all_symbol_names_from_pspace (struct collect_info *info, |
| 349 | struct program_space *pspace, |
| 350 | VEC (const_char_ptr) *names); |
| 351 | |
| 352 | static VEC (symtab_ptr) *collect_symtabs_from_filename (const char *file); |
| 353 | |
| 354 | static void decode_digits_ordinary (struct linespec_state *self, |
| 355 | linespec_p ls, |
| 356 | int line, |
| 357 | struct symtabs_and_lines *sals, |
| 358 | struct linetable_entry **best_entry); |
| 359 | |
| 360 | static void decode_digits_list_mode (struct linespec_state *self, |
| 361 | linespec_p ls, |
| 362 | struct symtabs_and_lines *values, |
| 363 | struct symtab_and_line val); |
| 364 | |
| 365 | static void minsym_found (struct linespec_state *self, struct objfile *objfile, |
| 366 | struct minimal_symbol *msymbol, |
| 367 | struct symtabs_and_lines *result); |
| 368 | |
| 369 | static int compare_symbols (const void *a, const void *b); |
| 370 | |
| 371 | static int compare_msymbols (const void *a, const void *b); |
| 372 | |
| 373 | static const char *find_toplevel_char (const char *s, char c); |
| 374 | |
| 375 | /* Permitted quote characters for the parser. This is different from the |
| 376 | completer's quote characters to allow backward compatibility with the |
| 377 | previous parser. */ |
| 378 | static const char *const linespec_quote_characters = "\"\'"; |
| 379 | |
| 380 | /* Lexer functions. */ |
| 381 | |
| 382 | /* Lex a number from the input in PARSER. This only supports |
| 383 | decimal numbers. |
| 384 | |
| 385 | Return true if input is decimal numbers. Return false if not. */ |
| 386 | |
| 387 | static int |
| 388 | linespec_lexer_lex_number (linespec_parser *parser, linespec_token *tokenp) |
| 389 | { |
| 390 | tokenp->type = LSTOKEN_NUMBER; |
| 391 | LS_TOKEN_STOKEN (*tokenp).length = 0; |
| 392 | LS_TOKEN_STOKEN (*tokenp).ptr = PARSER_STREAM (parser); |
| 393 | |
| 394 | /* Keep any sign at the start of the stream. */ |
| 395 | if (*PARSER_STREAM (parser) == '+' || *PARSER_STREAM (parser) == '-') |
| 396 | { |
| 397 | ++LS_TOKEN_STOKEN (*tokenp).length; |
| 398 | ++(PARSER_STREAM (parser)); |
| 399 | } |
| 400 | |
| 401 | while (isdigit (*PARSER_STREAM (parser))) |
| 402 | { |
| 403 | ++LS_TOKEN_STOKEN (*tokenp).length; |
| 404 | ++(PARSER_STREAM (parser)); |
| 405 | } |
| 406 | |
| 407 | /* If the next character in the input buffer is not a space, comma, |
| 408 | quote, or colon, this input does not represent a number. */ |
| 409 | if (*PARSER_STREAM (parser) != '\0' |
| 410 | && !isspace (*PARSER_STREAM (parser)) && *PARSER_STREAM (parser) != ',' |
| 411 | && *PARSER_STREAM (parser) != ':' |
| 412 | && !strchr (linespec_quote_characters, *PARSER_STREAM (parser))) |
| 413 | { |
| 414 | PARSER_STREAM (parser) = LS_TOKEN_STOKEN (*tokenp).ptr; |
| 415 | return 0; |
| 416 | } |
| 417 | |
| 418 | return 1; |
| 419 | } |
| 420 | |
| 421 | /* Does P represent one of the keywords? If so, return |
| 422 | the keyword. If not, return NULL. */ |
| 423 | |
| 424 | static const char * |
| 425 | linespec_lexer_lex_keyword (const char *p) |
| 426 | { |
| 427 | int i; |
| 428 | |
| 429 | if (p != NULL) |
| 430 | { |
| 431 | for (i = 0; i < ARRAY_SIZE (linespec_keywords); ++i) |
| 432 | { |
| 433 | int len = strlen (linespec_keywords[i]); |
| 434 | |
| 435 | /* If P begins with one of the keywords and the next |
| 436 | character is not a valid identifier character, |
| 437 | we have found a keyword. */ |
| 438 | if (strncmp (p, linespec_keywords[i], len) == 0 |
| 439 | && !(isalnum (p[len]) || p[len] == '_')) |
| 440 | return linespec_keywords[i]; |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | return NULL; |
| 445 | } |
| 446 | |
| 447 | /* Does STRING represent an Ada operator? If so, return the length |
| 448 | of the decoded operator name. If not, return 0. */ |
| 449 | |
| 450 | static int |
| 451 | is_ada_operator (const char *string) |
| 452 | { |
| 453 | const struct ada_opname_map *mapping; |
| 454 | |
| 455 | for (mapping = ada_opname_table; |
| 456 | mapping->encoded != NULL |
| 457 | && strncmp (mapping->decoded, string, |
| 458 | strlen (mapping->decoded)) != 0; ++mapping) |
| 459 | ; |
| 460 | |
| 461 | return mapping->decoded == NULL ? 0 : strlen (mapping->decoded); |
| 462 | } |
| 463 | |
| 464 | /* Find QUOTE_CHAR in STRING, accounting for the ':' terminal. Return |
| 465 | the location of QUOTE_CHAR, or NULL if not found. */ |
| 466 | |
| 467 | static const char * |
| 468 | skip_quote_char (const char *string, char quote_char) |
| 469 | { |
| 470 | const char *p, *last; |
| 471 | |
| 472 | p = last = find_toplevel_char (string, quote_char); |
| 473 | while (p && *p != '\0' && *p != ':') |
| 474 | { |
| 475 | p = find_toplevel_char (p, quote_char); |
| 476 | if (p != NULL) |
| 477 | last = p++; |
| 478 | } |
| 479 | |
| 480 | return last; |
| 481 | } |
| 482 | |
| 483 | /* Make a writable copy of the string given in TOKEN, trimming |
| 484 | any trailing whitespace. */ |
| 485 | |
| 486 | static char * |
| 487 | copy_token_string (linespec_token token) |
| 488 | { |
| 489 | char *str, *s; |
| 490 | |
| 491 | if (token.type == LSTOKEN_KEYWORD) |
| 492 | return xstrdup (LS_TOKEN_KEYWORD (token)); |
| 493 | |
| 494 | str = savestring (LS_TOKEN_STOKEN (token).ptr, |
| 495 | LS_TOKEN_STOKEN (token).length); |
| 496 | s = remove_trailing_whitespace (str, str + LS_TOKEN_STOKEN (token).length); |
| 497 | *s = '\0'; |
| 498 | |
| 499 | return str; |
| 500 | } |
| 501 | |
| 502 | /* Does P represent the end of a quote-enclosed linespec? */ |
| 503 | |
| 504 | static int |
| 505 | is_closing_quote_enclosed (const char *p) |
| 506 | { |
| 507 | if (strchr (linespec_quote_characters, *p)) |
| 508 | ++p; |
| 509 | p = skip_spaces ((char *) p); |
| 510 | return (*p == '\0' || linespec_lexer_lex_keyword (p)); |
| 511 | } |
| 512 | |
| 513 | /* Find the end of the parameter list that starts with *INPUT. |
| 514 | This helper function assists with lexing string segments |
| 515 | which might contain valid (non-terminating) commas. */ |
| 516 | |
| 517 | static const char * |
| 518 | find_parameter_list_end (const char *input) |
| 519 | { |
| 520 | char end_char, start_char; |
| 521 | int depth; |
| 522 | const char *p; |
| 523 | |
| 524 | start_char = *input; |
| 525 | if (start_char == '(') |
| 526 | end_char = ')'; |
| 527 | else if (start_char == '<') |
| 528 | end_char = '>'; |
| 529 | else |
| 530 | return NULL; |
| 531 | |
| 532 | p = input; |
| 533 | depth = 0; |
| 534 | while (*p) |
| 535 | { |
| 536 | if (*p == start_char) |
| 537 | ++depth; |
| 538 | else if (*p == end_char) |
| 539 | { |
| 540 | if (--depth == 0) |
| 541 | { |
| 542 | ++p; |
| 543 | break; |
| 544 | } |
| 545 | } |
| 546 | ++p; |
| 547 | } |
| 548 | |
| 549 | return p; |
| 550 | } |
| 551 | |
| 552 | |
| 553 | /* Lex a string from the input in PARSER. */ |
| 554 | |
| 555 | static linespec_token |
| 556 | linespec_lexer_lex_string (linespec_parser *parser) |
| 557 | { |
| 558 | linespec_token token; |
| 559 | const char *start = PARSER_STREAM (parser); |
| 560 | |
| 561 | token.type = LSTOKEN_STRING; |
| 562 | |
| 563 | /* If the input stream starts with a quote character, skip to the next |
| 564 | quote character, regardless of the content. */ |
| 565 | if (strchr (linespec_quote_characters, *PARSER_STREAM (parser))) |
| 566 | { |
| 567 | const char *end; |
| 568 | char quote_char = *PARSER_STREAM (parser); |
| 569 | |
| 570 | /* Special case: Ada operators. */ |
| 571 | if (PARSER_STATE (parser)->language->la_language == language_ada |
| 572 | && quote_char == '\"') |
| 573 | { |
| 574 | int len = is_ada_operator (PARSER_STREAM (parser)); |
| 575 | |
| 576 | if (len != 0) |
| 577 | { |
| 578 | /* The input is an Ada operator. Return the quoted string |
| 579 | as-is. */ |
| 580 | LS_TOKEN_STOKEN (token).ptr = PARSER_STREAM (parser); |
| 581 | LS_TOKEN_STOKEN (token).length = len; |
| 582 | PARSER_STREAM (parser) += len; |
| 583 | return token; |
| 584 | } |
| 585 | |
| 586 | /* The input does not represent an Ada operator -- fall through |
| 587 | to normal quoted string handling. */ |
| 588 | } |
| 589 | |
| 590 | /* Skip past the beginning quote. */ |
| 591 | ++(PARSER_STREAM (parser)); |
| 592 | |
| 593 | /* Mark the start of the string. */ |
| 594 | LS_TOKEN_STOKEN (token).ptr = PARSER_STREAM (parser); |
| 595 | |
| 596 | /* Skip to the ending quote. */ |
| 597 | end = skip_quote_char (PARSER_STREAM (parser), quote_char); |
| 598 | |
| 599 | /* Error if the input did not terminate properly. */ |
| 600 | if (end == NULL) |
| 601 | error (_("unmatched quote")); |
| 602 | |
| 603 | /* Skip over the ending quote and mark the length of the string. */ |
| 604 | PARSER_STREAM (parser) = (char *) ++end; |
| 605 | LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - 2 - start; |
| 606 | } |
| 607 | else |
| 608 | { |
| 609 | const char *p; |
| 610 | |
| 611 | /* Otherwise, only identifier characters are permitted. |
| 612 | Spaces are the exception. In general, we keep spaces, |
| 613 | but only if the next characters in the input do not resolve |
| 614 | to one of the keywords. |
| 615 | |
| 616 | This allows users to forgo quoting CV-qualifiers, template arguments, |
| 617 | and similar common language constructs. */ |
| 618 | |
| 619 | while (1) |
| 620 | { |
| 621 | if (isspace (*PARSER_STREAM (parser))) |
| 622 | { |
| 623 | p = skip_spaces_const (PARSER_STREAM (parser)); |
| 624 | /* When we get here we know we've found something followed by |
| 625 | a space (we skip over parens and templates below). |
| 626 | So if we find a keyword now, we know it is a keyword and not, |
| 627 | say, a function name. */ |
| 628 | if (linespec_lexer_lex_keyword (p) != NULL) |
| 629 | { |
| 630 | LS_TOKEN_STOKEN (token).ptr = start; |
| 631 | LS_TOKEN_STOKEN (token).length |
| 632 | = PARSER_STREAM (parser) - start; |
| 633 | return token; |
| 634 | } |
| 635 | |
| 636 | /* Advance past the whitespace. */ |
| 637 | PARSER_STREAM (parser) = p; |
| 638 | } |
| 639 | |
| 640 | /* If the next character is EOI or (single) ':', the |
| 641 | string is complete; return the token. */ |
| 642 | if (*PARSER_STREAM (parser) == 0) |
| 643 | { |
| 644 | LS_TOKEN_STOKEN (token).ptr = start; |
| 645 | LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start; |
| 646 | return token; |
| 647 | } |
| 648 | else if (PARSER_STREAM (parser)[0] == ':') |
| 649 | { |
| 650 | /* Do not tokenize the C++ scope operator. */ |
| 651 | if (PARSER_STREAM (parser)[1] == ':') |
| 652 | ++(PARSER_STREAM (parser)); |
| 653 | |
| 654 | /* Do not tokenify if the input length so far is one |
| 655 | (i.e, a single-letter drive name) and the next character |
| 656 | is a directory separator. This allows Windows-style |
| 657 | paths to be recognized as filenames without quoting it. */ |
| 658 | else if ((PARSER_STREAM (parser) - start) != 1 |
| 659 | || !IS_DIR_SEPARATOR (PARSER_STREAM (parser)[1])) |
| 660 | { |
| 661 | LS_TOKEN_STOKEN (token).ptr = start; |
| 662 | LS_TOKEN_STOKEN (token).length |
| 663 | = PARSER_STREAM (parser) - start; |
| 664 | return token; |
| 665 | } |
| 666 | } |
| 667 | /* Special case: permit quote-enclosed linespecs. */ |
| 668 | else if (parser->is_quote_enclosed |
| 669 | && strchr (linespec_quote_characters, |
| 670 | *PARSER_STREAM (parser)) |
| 671 | && is_closing_quote_enclosed (PARSER_STREAM (parser))) |
| 672 | { |
| 673 | LS_TOKEN_STOKEN (token).ptr = start; |
| 674 | LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start; |
| 675 | return token; |
| 676 | } |
| 677 | /* Because commas may terminate a linespec and appear in |
| 678 | the middle of valid string input, special cases for |
| 679 | '<' and '(' are necessary. */ |
| 680 | else if (*PARSER_STREAM (parser) == '<' |
| 681 | || *PARSER_STREAM (parser) == '(') |
| 682 | { |
| 683 | const char *p; |
| 684 | |
| 685 | p = find_parameter_list_end (PARSER_STREAM (parser)); |
| 686 | if (p != NULL) |
| 687 | { |
| 688 | PARSER_STREAM (parser) = p; |
| 689 | continue; |
| 690 | } |
| 691 | } |
| 692 | /* Commas are terminators, but not if they are part of an |
| 693 | operator name. */ |
| 694 | else if (*PARSER_STREAM (parser) == ',') |
| 695 | { |
| 696 | if ((PARSER_STATE (parser)->language->la_language |
| 697 | == language_cplus) |
| 698 | && (PARSER_STREAM (parser) - start) > 8 |
| 699 | /* strlen ("operator") */) |
| 700 | { |
| 701 | char *p = strstr (start, "operator"); |
| 702 | |
| 703 | if (p != NULL && is_operator_name (p)) |
| 704 | { |
| 705 | /* This is an operator name. Keep going. */ |
| 706 | ++(PARSER_STREAM (parser)); |
| 707 | continue; |
| 708 | } |
| 709 | } |
| 710 | |
| 711 | /* Comma terminates the string. */ |
| 712 | LS_TOKEN_STOKEN (token).ptr = start; |
| 713 | LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start; |
| 714 | return token; |
| 715 | } |
| 716 | |
| 717 | /* Advance the stream. */ |
| 718 | ++(PARSER_STREAM (parser)); |
| 719 | } |
| 720 | } |
| 721 | |
| 722 | return token; |
| 723 | } |
| 724 | |
| 725 | /* Lex a single linespec token from PARSER. */ |
| 726 | |
| 727 | static linespec_token |
| 728 | linespec_lexer_lex_one (linespec_parser *parser) |
| 729 | { |
| 730 | const char *keyword; |
| 731 | |
| 732 | if (parser->lexer.current.type == LSTOKEN_CONSUMED) |
| 733 | { |
| 734 | /* Skip any whitespace. */ |
| 735 | PARSER_STREAM (parser) = skip_spaces_const (PARSER_STREAM (parser)); |
| 736 | |
| 737 | /* Check for a keyword, they end the linespec. */ |
| 738 | keyword = NULL; |
| 739 | if (parser->keyword_ok) |
| 740 | keyword = linespec_lexer_lex_keyword (PARSER_STREAM (parser)); |
| 741 | if (keyword != NULL) |
| 742 | { |
| 743 | parser->lexer.current.type = LSTOKEN_KEYWORD; |
| 744 | LS_TOKEN_KEYWORD (parser->lexer.current) = keyword; |
| 745 | return parser->lexer.current; |
| 746 | } |
| 747 | |
| 748 | /* Handle other tokens. */ |
| 749 | switch (*PARSER_STREAM (parser)) |
| 750 | { |
| 751 | case 0: |
| 752 | parser->lexer.current.type = LSTOKEN_EOI; |
| 753 | break; |
| 754 | |
| 755 | case '+': case '-': |
| 756 | case '0': case '1': case '2': case '3': case '4': |
| 757 | case '5': case '6': case '7': case '8': case '9': |
| 758 | if (!linespec_lexer_lex_number (parser, &(parser->lexer.current))) |
| 759 | parser->lexer.current = linespec_lexer_lex_string (parser); |
| 760 | break; |
| 761 | |
| 762 | case ':': |
| 763 | /* If we have a scope operator, lex the input as a string. |
| 764 | Otherwise, return LSTOKEN_COLON. */ |
| 765 | if (PARSER_STREAM (parser)[1] == ':') |
| 766 | parser->lexer.current = linespec_lexer_lex_string (parser); |
| 767 | else |
| 768 | { |
| 769 | parser->lexer.current.type = LSTOKEN_COLON; |
| 770 | ++(PARSER_STREAM (parser)); |
| 771 | } |
| 772 | break; |
| 773 | |
| 774 | case '\'': case '\"': |
| 775 | /* Special case: permit quote-enclosed linespecs. */ |
| 776 | if (parser->is_quote_enclosed |
| 777 | && is_closing_quote_enclosed (PARSER_STREAM (parser))) |
| 778 | { |
| 779 | ++(PARSER_STREAM (parser)); |
| 780 | parser->lexer.current.type = LSTOKEN_EOI; |
| 781 | } |
| 782 | else |
| 783 | parser->lexer.current = linespec_lexer_lex_string (parser); |
| 784 | break; |
| 785 | |
| 786 | case ',': |
| 787 | parser->lexer.current.type = LSTOKEN_COMMA; |
| 788 | LS_TOKEN_STOKEN (parser->lexer.current).ptr |
| 789 | = PARSER_STREAM (parser); |
| 790 | LS_TOKEN_STOKEN (parser->lexer.current).length = 1; |
| 791 | ++(PARSER_STREAM (parser)); |
| 792 | break; |
| 793 | |
| 794 | default: |
| 795 | /* If the input is not a number, it must be a string. |
| 796 | [Keywords were already considered above.] */ |
| 797 | parser->lexer.current = linespec_lexer_lex_string (parser); |
| 798 | break; |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | return parser->lexer.current; |
| 803 | } |
| 804 | |
| 805 | /* Consume the current token and return the next token in PARSER's |
| 806 | input stream. */ |
| 807 | |
| 808 | static linespec_token |
| 809 | linespec_lexer_consume_token (linespec_parser *parser) |
| 810 | { |
| 811 | parser->lexer.current.type = LSTOKEN_CONSUMED; |
| 812 | return linespec_lexer_lex_one (parser); |
| 813 | } |
| 814 | |
| 815 | /* Return the next token without consuming the current token. */ |
| 816 | |
| 817 | static linespec_token |
| 818 | linespec_lexer_peek_token (linespec_parser *parser) |
| 819 | { |
| 820 | linespec_token next; |
| 821 | const char *saved_stream = PARSER_STREAM (parser); |
| 822 | linespec_token saved_token = parser->lexer.current; |
| 823 | |
| 824 | next = linespec_lexer_consume_token (parser); |
| 825 | PARSER_STREAM (parser) = saved_stream; |
| 826 | parser->lexer.current = saved_token; |
| 827 | return next; |
| 828 | } |
| 829 | |
| 830 | /* Helper functions. */ |
| 831 | |
| 832 | /* Add SAL to SALS. */ |
| 833 | |
| 834 | static void |
| 835 | add_sal_to_sals_basic (struct symtabs_and_lines *sals, |
| 836 | struct symtab_and_line *sal) |
| 837 | { |
| 838 | ++sals->nelts; |
| 839 | sals->sals = xrealloc (sals->sals, sals->nelts * sizeof (sals->sals[0])); |
| 840 | sals->sals[sals->nelts - 1] = *sal; |
| 841 | } |
| 842 | |
| 843 | /* Add SAL to SALS, and also update SELF->CANONICAL_NAMES to reflect |
| 844 | the new sal, if needed. If not NULL, SYMNAME is the name of the |
| 845 | symbol to use when constructing the new canonical name. |
| 846 | |
| 847 | If LITERAL_CANONICAL is non-zero, SYMNAME will be used as the |
| 848 | canonical name for the SAL. */ |
| 849 | |
| 850 | static void |
| 851 | add_sal_to_sals (struct linespec_state *self, |
| 852 | struct symtabs_and_lines *sals, |
| 853 | struct symtab_and_line *sal, |
| 854 | const char *symname, int literal_canonical) |
| 855 | { |
| 856 | add_sal_to_sals_basic (sals, sal); |
| 857 | |
| 858 | if (self->canonical) |
| 859 | { |
| 860 | struct linespec_canonical_name *canonical; |
| 861 | |
| 862 | self->canonical_names = xrealloc (self->canonical_names, |
| 863 | (sals->nelts |
| 864 | * sizeof (*self->canonical_names))); |
| 865 | canonical = &self->canonical_names[sals->nelts - 1]; |
| 866 | if (!literal_canonical && sal->symtab) |
| 867 | { |
| 868 | const char *fullname = symtab_to_fullname (sal->symtab); |
| 869 | |
| 870 | /* Note that the filter doesn't have to be a valid linespec |
| 871 | input. We only apply the ":LINE" treatment to Ada for |
| 872 | the time being. */ |
| 873 | if (symname != NULL && sal->line != 0 |
| 874 | && self->language->la_language == language_ada) |
| 875 | canonical->suffix = xstrprintf ("%s:%d", symname, sal->line); |
| 876 | else if (symname != NULL) |
| 877 | canonical->suffix = xstrdup (symname); |
| 878 | else |
| 879 | canonical->suffix = xstrprintf ("%d", sal->line); |
| 880 | canonical->symtab = sal->symtab; |
| 881 | } |
| 882 | else |
| 883 | { |
| 884 | if (symname != NULL) |
| 885 | canonical->suffix = xstrdup (symname); |
| 886 | else |
| 887 | canonical->suffix = xstrdup ("<unknown>"); |
| 888 | canonical->symtab = NULL; |
| 889 | } |
| 890 | } |
| 891 | } |
| 892 | |
| 893 | /* A hash function for address_entry. */ |
| 894 | |
| 895 | static hashval_t |
| 896 | hash_address_entry (const void *p) |
| 897 | { |
| 898 | const struct address_entry *aep = p; |
| 899 | hashval_t hash; |
| 900 | |
| 901 | hash = iterative_hash_object (aep->pspace, 0); |
| 902 | return iterative_hash_object (aep->addr, hash); |
| 903 | } |
| 904 | |
| 905 | /* An equality function for address_entry. */ |
| 906 | |
| 907 | static int |
| 908 | eq_address_entry (const void *a, const void *b) |
| 909 | { |
| 910 | const struct address_entry *aea = a; |
| 911 | const struct address_entry *aeb = b; |
| 912 | |
| 913 | return aea->pspace == aeb->pspace && aea->addr == aeb->addr; |
| 914 | } |
| 915 | |
| 916 | /* Check whether the address, represented by PSPACE and ADDR, is |
| 917 | already in the set. If so, return 0. Otherwise, add it and return |
| 918 | 1. */ |
| 919 | |
| 920 | static int |
| 921 | maybe_add_address (htab_t set, struct program_space *pspace, CORE_ADDR addr) |
| 922 | { |
| 923 | struct address_entry e, *p; |
| 924 | void **slot; |
| 925 | |
| 926 | e.pspace = pspace; |
| 927 | e.addr = addr; |
| 928 | slot = htab_find_slot (set, &e, INSERT); |
| 929 | if (*slot) |
| 930 | return 0; |
| 931 | |
| 932 | p = XNEW (struct address_entry); |
| 933 | memcpy (p, &e, sizeof (struct address_entry)); |
| 934 | *slot = p; |
| 935 | |
| 936 | return 1; |
| 937 | } |
| 938 | |
| 939 | /* A callback function and the additional data to call it with. */ |
| 940 | |
| 941 | struct symbol_and_data_callback |
| 942 | { |
| 943 | /* The callback to use. */ |
| 944 | symbol_found_callback_ftype *callback; |
| 945 | |
| 946 | /* Data to be passed to the callback. */ |
| 947 | void *data; |
| 948 | }; |
| 949 | |
| 950 | /* A helper for iterate_over_all_matching_symtabs that is used to |
| 951 | restrict calls to another callback to symbols representing inline |
| 952 | symbols only. */ |
| 953 | |
| 954 | static int |
| 955 | iterate_inline_only (struct symbol *sym, void *d) |
| 956 | { |
| 957 | if (SYMBOL_INLINED (sym)) |
| 958 | { |
| 959 | struct symbol_and_data_callback *cad = d; |
| 960 | |
| 961 | return cad->callback (sym, cad->data); |
| 962 | } |
| 963 | return 1; /* Continue iterating. */ |
| 964 | } |
| 965 | |
| 966 | /* Some data for the expand_symtabs_matching callback. */ |
| 967 | |
| 968 | struct symbol_matcher_data |
| 969 | { |
| 970 | /* The lookup name against which symbol name should be compared. */ |
| 971 | const char *lookup_name; |
| 972 | |
| 973 | /* The routine to be used for comparison. */ |
| 974 | symbol_name_cmp_ftype symbol_name_cmp; |
| 975 | }; |
| 976 | |
| 977 | /* A helper for iterate_over_all_matching_symtabs that is passed as a |
| 978 | callback to the expand_symtabs_matching method. */ |
| 979 | |
| 980 | static int |
| 981 | iterate_name_matcher (const char *name, void *d) |
| 982 | { |
| 983 | const struct symbol_matcher_data *data = d; |
| 984 | |
| 985 | if (data->symbol_name_cmp (name, data->lookup_name) == 0) |
| 986 | return 1; /* Expand this symbol's symbol table. */ |
| 987 | return 0; /* Skip this symbol. */ |
| 988 | } |
| 989 | |
| 990 | /* A helper that walks over all matching symtabs in all objfiles and |
| 991 | calls CALLBACK for each symbol matching NAME. If SEARCH_PSPACE is |
| 992 | not NULL, then the search is restricted to just that program |
| 993 | space. If INCLUDE_INLINE is nonzero then symbols representing |
| 994 | inlined instances of functions will be included in the result. */ |
| 995 | |
| 996 | static void |
| 997 | iterate_over_all_matching_symtabs (struct linespec_state *state, |
| 998 | const char *name, |
| 999 | const domain_enum domain, |
| 1000 | symbol_found_callback_ftype *callback, |
| 1001 | void *data, |
| 1002 | struct program_space *search_pspace, |
| 1003 | int include_inline) |
| 1004 | { |
| 1005 | struct objfile *objfile; |
| 1006 | struct program_space *pspace; |
| 1007 | struct symbol_matcher_data matcher_data; |
| 1008 | |
| 1009 | matcher_data.lookup_name = name; |
| 1010 | matcher_data.symbol_name_cmp = |
| 1011 | state->language->la_get_symbol_name_cmp != NULL |
| 1012 | ? state->language->la_get_symbol_name_cmp (name) |
| 1013 | : strcmp_iw; |
| 1014 | |
| 1015 | ALL_PSPACES (pspace) |
| 1016 | { |
| 1017 | if (search_pspace != NULL && search_pspace != pspace) |
| 1018 | continue; |
| 1019 | if (pspace->executing_startup) |
| 1020 | continue; |
| 1021 | |
| 1022 | set_current_program_space (pspace); |
| 1023 | |
| 1024 | ALL_OBJFILES (objfile) |
| 1025 | { |
| 1026 | struct compunit_symtab *cu; |
| 1027 | |
| 1028 | if (objfile->sf) |
| 1029 | objfile->sf->qf->expand_symtabs_matching (objfile, NULL, |
| 1030 | iterate_name_matcher, |
| 1031 | ALL_DOMAIN, |
| 1032 | &matcher_data); |
| 1033 | |
| 1034 | ALL_OBJFILE_COMPUNITS (objfile, cu) |
| 1035 | { |
| 1036 | struct symtab *symtab = COMPUNIT_FILETABS (cu); |
| 1037 | |
| 1038 | iterate_over_file_blocks (symtab, name, domain, callback, data); |
| 1039 | |
| 1040 | if (include_inline) |
| 1041 | { |
| 1042 | struct symbol_and_data_callback cad = { callback, data }; |
| 1043 | struct block *block; |
| 1044 | int i; |
| 1045 | |
| 1046 | for (i = FIRST_LOCAL_BLOCK; |
| 1047 | i < BLOCKVECTOR_NBLOCKS (SYMTAB_BLOCKVECTOR (symtab)); |
| 1048 | i++) |
| 1049 | { |
| 1050 | block = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symtab), i); |
| 1051 | state->language->la_iterate_over_symbols |
| 1052 | (block, name, domain, iterate_inline_only, &cad); |
| 1053 | } |
| 1054 | } |
| 1055 | } |
| 1056 | } |
| 1057 | } |
| 1058 | } |
| 1059 | |
| 1060 | /* Returns the block to be used for symbol searches from |
| 1061 | the current location. */ |
| 1062 | |
| 1063 | static const struct block * |
| 1064 | get_current_search_block (void) |
| 1065 | { |
| 1066 | const struct block *block; |
| 1067 | enum language save_language; |
| 1068 | |
| 1069 | /* get_selected_block can change the current language when there is |
| 1070 | no selected frame yet. */ |
| 1071 | save_language = current_language->la_language; |
| 1072 | block = get_selected_block (0); |
| 1073 | set_language (save_language); |
| 1074 | |
| 1075 | return block; |
| 1076 | } |
| 1077 | |
| 1078 | /* Iterate over static and global blocks. */ |
| 1079 | |
| 1080 | static void |
| 1081 | iterate_over_file_blocks (struct symtab *symtab, |
| 1082 | const char *name, domain_enum domain, |
| 1083 | symbol_found_callback_ftype *callback, void *data) |
| 1084 | { |
| 1085 | struct block *block; |
| 1086 | |
| 1087 | for (block = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symtab), STATIC_BLOCK); |
| 1088 | block != NULL; |
| 1089 | block = BLOCK_SUPERBLOCK (block)) |
| 1090 | LA_ITERATE_OVER_SYMBOLS (block, name, domain, callback, data); |
| 1091 | } |
| 1092 | |
| 1093 | /* A helper for find_method. This finds all methods in type T which |
| 1094 | match NAME. It adds matching symbol names to RESULT_NAMES, and |
| 1095 | adds T's direct superclasses to SUPERCLASSES. */ |
| 1096 | |
| 1097 | static void |
| 1098 | find_methods (struct type *t, const char *name, |
| 1099 | VEC (const_char_ptr) **result_names, |
| 1100 | VEC (typep) **superclasses) |
| 1101 | { |
| 1102 | int ibase; |
| 1103 | const char *class_name = type_name_no_tag (t); |
| 1104 | |
| 1105 | /* Ignore this class if it doesn't have a name. This is ugly, but |
| 1106 | unless we figure out how to get the physname without the name of |
| 1107 | the class, then the loop can't do any good. */ |
| 1108 | if (class_name) |
| 1109 | { |
| 1110 | int method_counter; |
| 1111 | |
| 1112 | CHECK_TYPEDEF (t); |
| 1113 | |
| 1114 | /* Loop over each method name. At this level, all overloads of a name |
| 1115 | are counted as a single name. There is an inner loop which loops over |
| 1116 | each overload. */ |
| 1117 | |
| 1118 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; |
| 1119 | method_counter >= 0; |
| 1120 | --method_counter) |
| 1121 | { |
| 1122 | const char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); |
| 1123 | char dem_opname[64]; |
| 1124 | |
| 1125 | if (strncmp (method_name, "__", 2) == 0 || |
| 1126 | strncmp (method_name, "op", 2) == 0 || |
| 1127 | strncmp (method_name, "type", 4) == 0) |
| 1128 | { |
| 1129 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) |
| 1130 | method_name = dem_opname; |
| 1131 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) |
| 1132 | method_name = dem_opname; |
| 1133 | } |
| 1134 | |
| 1135 | if (strcmp_iw (method_name, name) == 0) |
| 1136 | { |
| 1137 | int field_counter; |
| 1138 | |
| 1139 | for (field_counter = (TYPE_FN_FIELDLIST_LENGTH (t, method_counter) |
| 1140 | - 1); |
| 1141 | field_counter >= 0; |
| 1142 | --field_counter) |
| 1143 | { |
| 1144 | struct fn_field *f; |
| 1145 | const char *phys_name; |
| 1146 | |
| 1147 | f = TYPE_FN_FIELDLIST1 (t, method_counter); |
| 1148 | if (TYPE_FN_FIELD_STUB (f, field_counter)) |
| 1149 | continue; |
| 1150 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); |
| 1151 | VEC_safe_push (const_char_ptr, *result_names, phys_name); |
| 1152 | } |
| 1153 | } |
| 1154 | } |
| 1155 | } |
| 1156 | |
| 1157 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) |
| 1158 | VEC_safe_push (typep, *superclasses, TYPE_BASECLASS (t, ibase)); |
| 1159 | } |
| 1160 | |
| 1161 | /* Find an instance of the character C in the string S that is outside |
| 1162 | of all parenthesis pairs, single-quoted strings, and double-quoted |
| 1163 | strings. Also, ignore the char within a template name, like a ',' |
| 1164 | within foo<int, int>. */ |
| 1165 | |
| 1166 | static const char * |
| 1167 | find_toplevel_char (const char *s, char c) |
| 1168 | { |
| 1169 | int quoted = 0; /* zero if we're not in quotes; |
| 1170 | '"' if we're in a double-quoted string; |
| 1171 | '\'' if we're in a single-quoted string. */ |
| 1172 | int depth = 0; /* Number of unclosed parens we've seen. */ |
| 1173 | const char *scan; |
| 1174 | |
| 1175 | for (scan = s; *scan; scan++) |
| 1176 | { |
| 1177 | if (quoted) |
| 1178 | { |
| 1179 | if (*scan == quoted) |
| 1180 | quoted = 0; |
| 1181 | else if (*scan == '\\' && *(scan + 1)) |
| 1182 | scan++; |
| 1183 | } |
| 1184 | else if (*scan == c && ! quoted && depth == 0) |
| 1185 | return scan; |
| 1186 | else if (*scan == '"' || *scan == '\'') |
| 1187 | quoted = *scan; |
| 1188 | else if (*scan == '(' || *scan == '<') |
| 1189 | depth++; |
| 1190 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
| 1191 | depth--; |
| 1192 | } |
| 1193 | |
| 1194 | return 0; |
| 1195 | } |
| 1196 | |
| 1197 | /* The string equivalent of find_toplevel_char. Returns a pointer |
| 1198 | to the location of NEEDLE in HAYSTACK, ignoring any occurrences |
| 1199 | inside "()" and "<>". Returns NULL if NEEDLE was not found. */ |
| 1200 | |
| 1201 | static const char * |
| 1202 | find_toplevel_string (const char *haystack, const char *needle) |
| 1203 | { |
| 1204 | const char *s = haystack; |
| 1205 | |
| 1206 | do |
| 1207 | { |
| 1208 | s = find_toplevel_char (s, *needle); |
| 1209 | |
| 1210 | if (s != NULL) |
| 1211 | { |
| 1212 | /* Found first char in HAYSTACK; check rest of string. */ |
| 1213 | if (strncmp (s, needle, strlen (needle)) == 0) |
| 1214 | return s; |
| 1215 | |
| 1216 | /* Didn't find it; loop over HAYSTACK, looking for the next |
| 1217 | instance of the first character of NEEDLE. */ |
| 1218 | ++s; |
| 1219 | } |
| 1220 | } |
| 1221 | while (s != NULL && *s != '\0'); |
| 1222 | |
| 1223 | /* NEEDLE was not found in HAYSTACK. */ |
| 1224 | return NULL; |
| 1225 | } |
| 1226 | |
| 1227 | /* Convert CANONICAL to its string representation using |
| 1228 | symtab_to_fullname for SYMTAB. The caller must xfree the result. */ |
| 1229 | |
| 1230 | static char * |
| 1231 | canonical_to_fullform (const struct linespec_canonical_name *canonical) |
| 1232 | { |
| 1233 | if (canonical->symtab == NULL) |
| 1234 | return xstrdup (canonical->suffix); |
| 1235 | else |
| 1236 | return xstrprintf ("%s:%s", symtab_to_fullname (canonical->symtab), |
| 1237 | canonical->suffix); |
| 1238 | } |
| 1239 | |
| 1240 | /* Given FILTERS, a list of canonical names, filter the sals in RESULT |
| 1241 | and store the result in SELF->CANONICAL. */ |
| 1242 | |
| 1243 | static void |
| 1244 | filter_results (struct linespec_state *self, |
| 1245 | struct symtabs_and_lines *result, |
| 1246 | VEC (const_char_ptr) *filters) |
| 1247 | { |
| 1248 | int i; |
| 1249 | const char *name; |
| 1250 | |
| 1251 | for (i = 0; VEC_iterate (const_char_ptr, filters, i, name); ++i) |
| 1252 | { |
| 1253 | struct linespec_sals lsal; |
| 1254 | int j; |
| 1255 | |
| 1256 | memset (&lsal, 0, sizeof (lsal)); |
| 1257 | |
| 1258 | for (j = 0; j < result->nelts; ++j) |
| 1259 | { |
| 1260 | const struct linespec_canonical_name *canonical; |
| 1261 | char *fullform; |
| 1262 | struct cleanup *cleanup; |
| 1263 | |
| 1264 | canonical = &self->canonical_names[j]; |
| 1265 | fullform = canonical_to_fullform (canonical); |
| 1266 | cleanup = make_cleanup (xfree, fullform); |
| 1267 | |
| 1268 | if (strcmp (name, fullform) == 0) |
| 1269 | add_sal_to_sals_basic (&lsal.sals, &result->sals[j]); |
| 1270 | |
| 1271 | do_cleanups (cleanup); |
| 1272 | } |
| 1273 | |
| 1274 | if (lsal.sals.nelts > 0) |
| 1275 | { |
| 1276 | lsal.canonical = xstrdup (name); |
| 1277 | VEC_safe_push (linespec_sals, self->canonical->sals, &lsal); |
| 1278 | } |
| 1279 | } |
| 1280 | |
| 1281 | self->canonical->pre_expanded = 0; |
| 1282 | } |
| 1283 | |
| 1284 | /* Store RESULT into SELF->CANONICAL. */ |
| 1285 | |
| 1286 | static void |
| 1287 | convert_results_to_lsals (struct linespec_state *self, |
| 1288 | struct symtabs_and_lines *result) |
| 1289 | { |
| 1290 | struct linespec_sals lsal; |
| 1291 | |
| 1292 | lsal.canonical = NULL; |
| 1293 | lsal.sals = *result; |
| 1294 | VEC_safe_push (linespec_sals, self->canonical->sals, &lsal); |
| 1295 | } |
| 1296 | |
| 1297 | /* A structure that contains two string representations of a struct |
| 1298 | linespec_canonical_name: |
| 1299 | - one where the the symtab's fullname is used; |
| 1300 | - one where the filename followed the "set filename-display" |
| 1301 | setting. */ |
| 1302 | |
| 1303 | struct decode_line_2_item |
| 1304 | { |
| 1305 | /* The form using symtab_to_fullname. |
| 1306 | It must be xfree'ed after use. */ |
| 1307 | char *fullform; |
| 1308 | |
| 1309 | /* The form using symtab_to_filename_for_display. |
| 1310 | It must be xfree'ed after use. */ |
| 1311 | char *displayform; |
| 1312 | |
| 1313 | /* Field is initialized to zero and it is set to one if the user |
| 1314 | requested breakpoint for this entry. */ |
| 1315 | unsigned int selected : 1; |
| 1316 | }; |
| 1317 | |
| 1318 | /* Helper for qsort to sort decode_line_2_item entries by DISPLAYFORM and |
| 1319 | secondarily by FULLFORM. */ |
| 1320 | |
| 1321 | static int |
| 1322 | decode_line_2_compare_items (const void *ap, const void *bp) |
| 1323 | { |
| 1324 | const struct decode_line_2_item *a = ap; |
| 1325 | const struct decode_line_2_item *b = bp; |
| 1326 | int retval; |
| 1327 | |
| 1328 | retval = strcmp (a->displayform, b->displayform); |
| 1329 | if (retval != 0) |
| 1330 | return retval; |
| 1331 | |
| 1332 | return strcmp (a->fullform, b->fullform); |
| 1333 | } |
| 1334 | |
| 1335 | /* Handle multiple results in RESULT depending on SELECT_MODE. This |
| 1336 | will either return normally, throw an exception on multiple |
| 1337 | results, or present a menu to the user. On return, the SALS vector |
| 1338 | in SELF->CANONICAL is set up properly. */ |
| 1339 | |
| 1340 | static void |
| 1341 | decode_line_2 (struct linespec_state *self, |
| 1342 | struct symtabs_and_lines *result, |
| 1343 | const char *select_mode) |
| 1344 | { |
| 1345 | char *args, *prompt; |
| 1346 | int i; |
| 1347 | struct cleanup *old_chain; |
| 1348 | VEC (const_char_ptr) *filters = NULL; |
| 1349 | struct get_number_or_range_state state; |
| 1350 | struct decode_line_2_item *items; |
| 1351 | int items_count; |
| 1352 | |
| 1353 | gdb_assert (select_mode != multiple_symbols_all); |
| 1354 | gdb_assert (self->canonical != NULL); |
| 1355 | gdb_assert (result->nelts >= 1); |
| 1356 | |
| 1357 | old_chain = make_cleanup (VEC_cleanup (const_char_ptr), &filters); |
| 1358 | |
| 1359 | /* Prepare ITEMS array. */ |
| 1360 | items_count = result->nelts; |
| 1361 | items = xmalloc (sizeof (*items) * items_count); |
| 1362 | make_cleanup (xfree, items); |
| 1363 | for (i = 0; i < items_count; ++i) |
| 1364 | { |
| 1365 | const struct linespec_canonical_name *canonical; |
| 1366 | struct decode_line_2_item *item; |
| 1367 | |
| 1368 | canonical = &self->canonical_names[i]; |
| 1369 | gdb_assert (canonical->suffix != NULL); |
| 1370 | item = &items[i]; |
| 1371 | |
| 1372 | item->fullform = canonical_to_fullform (canonical); |
| 1373 | make_cleanup (xfree, item->fullform); |
| 1374 | |
| 1375 | if (canonical->symtab == NULL) |
| 1376 | item->displayform = canonical->suffix; |
| 1377 | else |
| 1378 | { |
| 1379 | const char *fn_for_display; |
| 1380 | |
| 1381 | fn_for_display = symtab_to_filename_for_display (canonical->symtab); |
| 1382 | item->displayform = xstrprintf ("%s:%s", fn_for_display, |
| 1383 | canonical->suffix); |
| 1384 | make_cleanup (xfree, item->displayform); |
| 1385 | } |
| 1386 | |
| 1387 | item->selected = 0; |
| 1388 | } |
| 1389 | |
| 1390 | /* Sort the list of method names. */ |
| 1391 | qsort (items, items_count, sizeof (*items), decode_line_2_compare_items); |
| 1392 | |
| 1393 | /* Remove entries with the same FULLFORM. */ |
| 1394 | if (items_count >= 2) |
| 1395 | { |
| 1396 | struct decode_line_2_item *dst, *src; |
| 1397 | |
| 1398 | dst = items; |
| 1399 | for (src = &items[1]; src < &items[items_count]; src++) |
| 1400 | if (strcmp (src->fullform, dst->fullform) != 0) |
| 1401 | *++dst = *src; |
| 1402 | items_count = dst + 1 - items; |
| 1403 | } |
| 1404 | |
| 1405 | if (select_mode == multiple_symbols_cancel && items_count > 1) |
| 1406 | error (_("canceled because the command is ambiguous\n" |
| 1407 | "See set/show multiple-symbol.")); |
| 1408 | |
| 1409 | if (select_mode == multiple_symbols_all || items_count == 1) |
| 1410 | { |
| 1411 | do_cleanups (old_chain); |
| 1412 | convert_results_to_lsals (self, result); |
| 1413 | return; |
| 1414 | } |
| 1415 | |
| 1416 | printf_unfiltered (_("[0] cancel\n[1] all\n")); |
| 1417 | for (i = 0; i < items_count; i++) |
| 1418 | printf_unfiltered ("[%d] %s\n", i + 2, items[i].displayform); |
| 1419 | |
| 1420 | prompt = getenv ("PS2"); |
| 1421 | if (prompt == NULL) |
| 1422 | { |
| 1423 | prompt = "> "; |
| 1424 | } |
| 1425 | args = command_line_input (prompt, 0, "overload-choice"); |
| 1426 | |
| 1427 | if (args == 0 || *args == 0) |
| 1428 | error_no_arg (_("one or more choice numbers")); |
| 1429 | |
| 1430 | init_number_or_range (&state, args); |
| 1431 | while (!state.finished) |
| 1432 | { |
| 1433 | int num; |
| 1434 | |
| 1435 | num = get_number_or_range (&state); |
| 1436 | |
| 1437 | if (num == 0) |
| 1438 | error (_("canceled")); |
| 1439 | else if (num == 1) |
| 1440 | { |
| 1441 | /* We intentionally make this result in a single breakpoint, |
| 1442 | contrary to what older versions of gdb did. The |
| 1443 | rationale is that this lets a user get the |
| 1444 | multiple_symbols_all behavior even with the 'ask' |
| 1445 | setting; and he can get separate breakpoints by entering |
| 1446 | "2-57" at the query. */ |
| 1447 | do_cleanups (old_chain); |
| 1448 | convert_results_to_lsals (self, result); |
| 1449 | return; |
| 1450 | } |
| 1451 | |
| 1452 | num -= 2; |
| 1453 | if (num >= items_count) |
| 1454 | printf_unfiltered (_("No choice number %d.\n"), num); |
| 1455 | else |
| 1456 | { |
| 1457 | struct decode_line_2_item *item = &items[num]; |
| 1458 | |
| 1459 | if (!item->selected) |
| 1460 | { |
| 1461 | VEC_safe_push (const_char_ptr, filters, item->fullform); |
| 1462 | item->selected = 1; |
| 1463 | } |
| 1464 | else |
| 1465 | { |
| 1466 | printf_unfiltered (_("duplicate request for %d ignored.\n"), |
| 1467 | num + 2); |
| 1468 | } |
| 1469 | } |
| 1470 | } |
| 1471 | |
| 1472 | filter_results (self, result, filters); |
| 1473 | do_cleanups (old_chain); |
| 1474 | } |
| 1475 | |
| 1476 | \f |
| 1477 | |
| 1478 | /* The parser of linespec itself. */ |
| 1479 | |
| 1480 | /* Throw an appropriate error when SYMBOL is not found (optionally in |
| 1481 | FILENAME). */ |
| 1482 | |
| 1483 | static void ATTRIBUTE_NORETURN |
| 1484 | symbol_not_found_error (const char *symbol, const char *filename) |
| 1485 | { |
| 1486 | if (symbol == NULL) |
| 1487 | symbol = ""; |
| 1488 | |
| 1489 | if (!have_full_symbols () |
| 1490 | && !have_partial_symbols () |
| 1491 | && !have_minimal_symbols ()) |
| 1492 | throw_error (NOT_FOUND_ERROR, |
| 1493 | _("No symbol table is loaded. Use the \"file\" command.")); |
| 1494 | |
| 1495 | /* If SYMBOL starts with '$', the user attempted to either lookup |
| 1496 | a function/variable in his code starting with '$' or an internal |
| 1497 | variable of that name. Since we do not know which, be concise and |
| 1498 | explain both possibilities. */ |
| 1499 | if (*symbol == '$') |
| 1500 | { |
| 1501 | if (filename) |
| 1502 | throw_error (NOT_FOUND_ERROR, |
| 1503 | _("Undefined convenience variable or function \"%s\" " |
| 1504 | "not defined in \"%s\"."), symbol, filename); |
| 1505 | else |
| 1506 | throw_error (NOT_FOUND_ERROR, |
| 1507 | _("Undefined convenience variable or function \"%s\" " |
| 1508 | "not defined."), symbol); |
| 1509 | } |
| 1510 | else |
| 1511 | { |
| 1512 | if (filename) |
| 1513 | throw_error (NOT_FOUND_ERROR, |
| 1514 | _("Function \"%s\" not defined in \"%s\"."), |
| 1515 | symbol, filename); |
| 1516 | else |
| 1517 | throw_error (NOT_FOUND_ERROR, |
| 1518 | _("Function \"%s\" not defined."), symbol); |
| 1519 | } |
| 1520 | } |
| 1521 | |
| 1522 | /* Throw an appropriate error when an unexpected token is encountered |
| 1523 | in the input. */ |
| 1524 | |
| 1525 | static void ATTRIBUTE_NORETURN |
| 1526 | unexpected_linespec_error (linespec_parser *parser) |
| 1527 | { |
| 1528 | linespec_token token; |
| 1529 | static const char * token_type_strings[] |
| 1530 | = {"keyword", "colon", "string", "number", "comma", "end of input"}; |
| 1531 | |
| 1532 | /* Get the token that generated the error. */ |
| 1533 | token = linespec_lexer_lex_one (parser); |
| 1534 | |
| 1535 | /* Finally, throw the error. */ |
| 1536 | if (token.type == LSTOKEN_STRING || token.type == LSTOKEN_NUMBER |
| 1537 | || token.type == LSTOKEN_KEYWORD) |
| 1538 | { |
| 1539 | char *string; |
| 1540 | struct cleanup *cleanup; |
| 1541 | |
| 1542 | string = copy_token_string (token); |
| 1543 | cleanup = make_cleanup (xfree, string); |
| 1544 | throw_error (GENERIC_ERROR, |
| 1545 | _("malformed linespec error: unexpected %s, \"%s\""), |
| 1546 | token_type_strings[token.type], string); |
| 1547 | } |
| 1548 | else |
| 1549 | throw_error (GENERIC_ERROR, |
| 1550 | _("malformed linespec error: unexpected %s"), |
| 1551 | token_type_strings[token.type]); |
| 1552 | } |
| 1553 | |
| 1554 | /* Parse and return a line offset in STRING. */ |
| 1555 | |
| 1556 | static struct line_offset |
| 1557 | linespec_parse_line_offset (const char *string) |
| 1558 | { |
| 1559 | struct line_offset line_offset = {0, LINE_OFFSET_NONE}; |
| 1560 | |
| 1561 | if (*string == '+') |
| 1562 | { |
| 1563 | line_offset.sign = LINE_OFFSET_PLUS; |
| 1564 | ++string; |
| 1565 | } |
| 1566 | else if (*string == '-') |
| 1567 | { |
| 1568 | line_offset.sign = LINE_OFFSET_MINUS; |
| 1569 | ++string; |
| 1570 | } |
| 1571 | |
| 1572 | /* Right now, we only allow base 10 for offsets. */ |
| 1573 | line_offset.offset = atoi (string); |
| 1574 | return line_offset; |
| 1575 | } |
| 1576 | |
| 1577 | /* Parse the basic_spec in PARSER's input. */ |
| 1578 | |
| 1579 | static void |
| 1580 | linespec_parse_basic (linespec_parser *parser) |
| 1581 | { |
| 1582 | char *name; |
| 1583 | linespec_token token; |
| 1584 | VEC (symbolp) *symbols, *labels; |
| 1585 | VEC (bound_minimal_symbol_d) *minimal_symbols; |
| 1586 | struct cleanup *cleanup; |
| 1587 | |
| 1588 | /* Get the next token. */ |
| 1589 | token = linespec_lexer_lex_one (parser); |
| 1590 | |
| 1591 | /* If it is EOI or KEYWORD, issue an error. */ |
| 1592 | if (token.type == LSTOKEN_KEYWORD || token.type == LSTOKEN_EOI) |
| 1593 | unexpected_linespec_error (parser); |
| 1594 | /* If it is a LSTOKEN_NUMBER, we have an offset. */ |
| 1595 | else if (token.type == LSTOKEN_NUMBER) |
| 1596 | { |
| 1597 | /* Record the line offset and get the next token. */ |
| 1598 | name = copy_token_string (token); |
| 1599 | cleanup = make_cleanup (xfree, name); |
| 1600 | PARSER_RESULT (parser)->line_offset = linespec_parse_line_offset (name); |
| 1601 | do_cleanups (cleanup); |
| 1602 | |
| 1603 | /* Get the next token. */ |
| 1604 | token = linespec_lexer_consume_token (parser); |
| 1605 | |
| 1606 | /* If the next token is a comma, stop parsing and return. */ |
| 1607 | if (token.type == LSTOKEN_COMMA) |
| 1608 | return; |
| 1609 | |
| 1610 | /* If the next token is anything but EOI or KEYWORD, issue |
| 1611 | an error. */ |
| 1612 | if (token.type != LSTOKEN_KEYWORD && token.type != LSTOKEN_EOI) |
| 1613 | unexpected_linespec_error (parser); |
| 1614 | } |
| 1615 | |
| 1616 | if (token.type == LSTOKEN_KEYWORD || token.type == LSTOKEN_EOI) |
| 1617 | return; |
| 1618 | |
| 1619 | /* Next token must be LSTOKEN_STRING. */ |
| 1620 | if (token.type != LSTOKEN_STRING) |
| 1621 | unexpected_linespec_error (parser); |
| 1622 | |
| 1623 | /* The current token will contain the name of a function, method, |
| 1624 | or label. */ |
| 1625 | name = copy_token_string (token); |
| 1626 | cleanup = make_cleanup (xfree, name); |
| 1627 | |
| 1628 | /* Try looking it up as a function/method. */ |
| 1629 | find_linespec_symbols (PARSER_STATE (parser), |
| 1630 | PARSER_RESULT (parser)->file_symtabs, name, |
| 1631 | &symbols, &minimal_symbols); |
| 1632 | |
| 1633 | if (symbols != NULL || minimal_symbols != NULL) |
| 1634 | { |
| 1635 | PARSER_RESULT (parser)->function_symbols = symbols; |
| 1636 | PARSER_RESULT (parser)->minimal_symbols = minimal_symbols; |
| 1637 | PARSER_RESULT (parser)->function_name = name; |
| 1638 | symbols = NULL; |
| 1639 | discard_cleanups (cleanup); |
| 1640 | } |
| 1641 | else |
| 1642 | { |
| 1643 | /* NAME was not a function or a method. So it must be a label |
| 1644 | name or user specified variable like "break foo.c:$zippo". */ |
| 1645 | labels = find_label_symbols (PARSER_STATE (parser), NULL, |
| 1646 | &symbols, name); |
| 1647 | if (labels != NULL) |
| 1648 | { |
| 1649 | PARSER_RESULT (parser)->labels.label_symbols = labels; |
| 1650 | PARSER_RESULT (parser)->labels.function_symbols = symbols; |
| 1651 | PARSER_RESULT (parser)->label_name = name; |
| 1652 | symbols = NULL; |
| 1653 | discard_cleanups (cleanup); |
| 1654 | } |
| 1655 | else if (token.type == LSTOKEN_STRING |
| 1656 | && *LS_TOKEN_STOKEN (token).ptr == '$') |
| 1657 | { |
| 1658 | /* User specified a convenience variable or history value. */ |
| 1659 | PARSER_RESULT (parser)->line_offset |
| 1660 | = linespec_parse_variable (PARSER_STATE (parser), name); |
| 1661 | |
| 1662 | if (PARSER_RESULT (parser)->line_offset.sign == LINE_OFFSET_UNKNOWN) |
| 1663 | { |
| 1664 | /* The user-specified variable was not valid. Do not |
| 1665 | throw an error here. parse_linespec will do it for us. */ |
| 1666 | PARSER_RESULT (parser)->function_name = name; |
| 1667 | discard_cleanups (cleanup); |
| 1668 | return; |
| 1669 | } |
| 1670 | |
| 1671 | /* The convenience variable/history value parsed correctly. |
| 1672 | NAME is no longer needed. */ |
| 1673 | do_cleanups (cleanup); |
| 1674 | } |
| 1675 | else |
| 1676 | { |
| 1677 | /* The name is also not a label. Abort parsing. Do not throw |
| 1678 | an error here. parse_linespec will do it for us. */ |
| 1679 | |
| 1680 | /* Save a copy of the name we were trying to lookup. */ |
| 1681 | PARSER_RESULT (parser)->function_name = name; |
| 1682 | discard_cleanups (cleanup); |
| 1683 | return; |
| 1684 | } |
| 1685 | } |
| 1686 | |
| 1687 | /* Get the next token. */ |
| 1688 | token = linespec_lexer_consume_token (parser); |
| 1689 | |
| 1690 | if (token.type == LSTOKEN_COLON) |
| 1691 | { |
| 1692 | /* User specified a label or a lineno. */ |
| 1693 | token = linespec_lexer_consume_token (parser); |
| 1694 | |
| 1695 | if (token.type == LSTOKEN_NUMBER) |
| 1696 | { |
| 1697 | /* User specified an offset. Record the line offset and |
| 1698 | get the next token. */ |
| 1699 | name = copy_token_string (token); |
| 1700 | cleanup = make_cleanup (xfree, name); |
| 1701 | PARSER_RESULT (parser)->line_offset |
| 1702 | = linespec_parse_line_offset (name); |
| 1703 | do_cleanups (cleanup); |
| 1704 | |
| 1705 | /* Ge the next token. */ |
| 1706 | token = linespec_lexer_consume_token (parser); |
| 1707 | } |
| 1708 | else if (token.type == LSTOKEN_STRING) |
| 1709 | { |
| 1710 | /* Grab a copy of the label's name and look it up. */ |
| 1711 | name = copy_token_string (token); |
| 1712 | cleanup = make_cleanup (xfree, name); |
| 1713 | labels = find_label_symbols (PARSER_STATE (parser), |
| 1714 | PARSER_RESULT (parser)->function_symbols, |
| 1715 | &symbols, name); |
| 1716 | |
| 1717 | if (labels != NULL) |
| 1718 | { |
| 1719 | PARSER_RESULT (parser)->labels.label_symbols = labels; |
| 1720 | PARSER_RESULT (parser)->labels.function_symbols = symbols; |
| 1721 | PARSER_RESULT (parser)->label_name = name; |
| 1722 | symbols = NULL; |
| 1723 | discard_cleanups (cleanup); |
| 1724 | } |
| 1725 | else |
| 1726 | { |
| 1727 | /* We don't know what it was, but it isn't a label. */ |
| 1728 | throw_error (NOT_FOUND_ERROR, |
| 1729 | _("No label \"%s\" defined in function \"%s\"."), |
| 1730 | name, PARSER_RESULT (parser)->function_name); |
| 1731 | } |
| 1732 | |
| 1733 | /* Check for a line offset. */ |
| 1734 | token = linespec_lexer_consume_token (parser); |
| 1735 | if (token.type == LSTOKEN_COLON) |
| 1736 | { |
| 1737 | /* Get the next token. */ |
| 1738 | token = linespec_lexer_consume_token (parser); |
| 1739 | |
| 1740 | /* It must be a line offset. */ |
| 1741 | if (token.type != LSTOKEN_NUMBER) |
| 1742 | unexpected_linespec_error (parser); |
| 1743 | |
| 1744 | /* Record the lione offset and get the next token. */ |
| 1745 | name = copy_token_string (token); |
| 1746 | cleanup = make_cleanup (xfree, name); |
| 1747 | |
| 1748 | PARSER_RESULT (parser)->line_offset |
| 1749 | = linespec_parse_line_offset (name); |
| 1750 | do_cleanups (cleanup); |
| 1751 | |
| 1752 | /* Get the next token. */ |
| 1753 | token = linespec_lexer_consume_token (parser); |
| 1754 | } |
| 1755 | } |
| 1756 | else |
| 1757 | { |
| 1758 | /* Trailing ':' in the input. Issue an error. */ |
| 1759 | unexpected_linespec_error (parser); |
| 1760 | } |
| 1761 | } |
| 1762 | } |
| 1763 | |
| 1764 | /* Canonicalize the linespec contained in LS. The result is saved into |
| 1765 | STATE->canonical. */ |
| 1766 | |
| 1767 | static void |
| 1768 | canonicalize_linespec (struct linespec_state *state, linespec_p ls) |
| 1769 | { |
| 1770 | /* If canonicalization was not requested, no need to do anything. */ |
| 1771 | if (!state->canonical) |
| 1772 | return; |
| 1773 | |
| 1774 | /* Shortcut expressions, which can only appear by themselves. */ |
| 1775 | if (ls->expression != NULL) |
| 1776 | state->canonical->addr_string = xstrdup (ls->expression); |
| 1777 | else |
| 1778 | { |
| 1779 | struct ui_file *buf; |
| 1780 | int need_colon = 0; |
| 1781 | |
| 1782 | buf = mem_fileopen (); |
| 1783 | if (ls->source_filename) |
| 1784 | { |
| 1785 | fputs_unfiltered (ls->source_filename, buf); |
| 1786 | need_colon = 1; |
| 1787 | } |
| 1788 | |
| 1789 | if (ls->function_name) |
| 1790 | { |
| 1791 | if (need_colon) |
| 1792 | fputc_unfiltered (':', buf); |
| 1793 | fputs_unfiltered (ls->function_name, buf); |
| 1794 | need_colon = 1; |
| 1795 | } |
| 1796 | |
| 1797 | if (ls->label_name) |
| 1798 | { |
| 1799 | if (need_colon) |
| 1800 | fputc_unfiltered (':', buf); |
| 1801 | |
| 1802 | if (ls->function_name == NULL) |
| 1803 | { |
| 1804 | struct symbol *s; |
| 1805 | |
| 1806 | /* No function was specified, so add the symbol name. */ |
| 1807 | gdb_assert (ls->labels.function_symbols != NULL |
| 1808 | && (VEC_length (symbolp, ls->labels.function_symbols) |
| 1809 | == 1)); |
| 1810 | s = VEC_index (symbolp, ls->labels.function_symbols, 0); |
| 1811 | fputs_unfiltered (SYMBOL_NATURAL_NAME (s), buf); |
| 1812 | fputc_unfiltered (':', buf); |
| 1813 | } |
| 1814 | |
| 1815 | fputs_unfiltered (ls->label_name, buf); |
| 1816 | need_colon = 1; |
| 1817 | state->canonical->special_display = 1; |
| 1818 | } |
| 1819 | |
| 1820 | if (ls->line_offset.sign != LINE_OFFSET_UNKNOWN) |
| 1821 | { |
| 1822 | if (need_colon) |
| 1823 | fputc_unfiltered (':', buf); |
| 1824 | fprintf_filtered (buf, "%s%d", |
| 1825 | (ls->line_offset.sign == LINE_OFFSET_NONE ? "" |
| 1826 | : (ls->line_offset.sign |
| 1827 | == LINE_OFFSET_PLUS ? "+" : "-")), |
| 1828 | ls->line_offset.offset); |
| 1829 | } |
| 1830 | |
| 1831 | state->canonical->addr_string = ui_file_xstrdup (buf, NULL); |
| 1832 | ui_file_delete (buf); |
| 1833 | } |
| 1834 | } |
| 1835 | |
| 1836 | /* Given a line offset in LS, construct the relevant SALs. */ |
| 1837 | |
| 1838 | static struct symtabs_and_lines |
| 1839 | create_sals_line_offset (struct linespec_state *self, |
| 1840 | linespec_p ls) |
| 1841 | { |
| 1842 | struct symtabs_and_lines values; |
| 1843 | struct symtab_and_line val; |
| 1844 | int use_default = 0; |
| 1845 | |
| 1846 | init_sal (&val); |
| 1847 | values.sals = NULL; |
| 1848 | values.nelts = 0; |
| 1849 | |
| 1850 | /* This is where we need to make sure we have good defaults. |
| 1851 | We must guarantee that this section of code is never executed |
| 1852 | when we are called with just a function name, since |
| 1853 | set_default_source_symtab_and_line uses |
| 1854 | select_source_symtab that calls us with such an argument. */ |
| 1855 | |
| 1856 | if (VEC_length (symtab_ptr, ls->file_symtabs) == 1 |
| 1857 | && VEC_index (symtab_ptr, ls->file_symtabs, 0) == NULL) |
| 1858 | { |
| 1859 | const char *fullname; |
| 1860 | |
| 1861 | set_current_program_space (self->program_space); |
| 1862 | |
| 1863 | /* Make sure we have at least a default source line. */ |
| 1864 | set_default_source_symtab_and_line (); |
| 1865 | initialize_defaults (&self->default_symtab, &self->default_line); |
| 1866 | fullname = symtab_to_fullname (self->default_symtab); |
| 1867 | VEC_pop (symtab_ptr, ls->file_symtabs); |
| 1868 | VEC_free (symtab_ptr, ls->file_symtabs); |
| 1869 | ls->file_symtabs = collect_symtabs_from_filename (fullname); |
| 1870 | use_default = 1; |
| 1871 | } |
| 1872 | |
| 1873 | val.line = ls->line_offset.offset; |
| 1874 | switch (ls->line_offset.sign) |
| 1875 | { |
| 1876 | case LINE_OFFSET_PLUS: |
| 1877 | if (ls->line_offset.offset == 0) |
| 1878 | val.line = 5; |
| 1879 | if (use_default) |
| 1880 | val.line = self->default_line + val.line; |
| 1881 | break; |
| 1882 | |
| 1883 | case LINE_OFFSET_MINUS: |
| 1884 | if (ls->line_offset.offset == 0) |
| 1885 | val.line = 15; |
| 1886 | if (use_default) |
| 1887 | val.line = self->default_line - val.line; |
| 1888 | else |
| 1889 | val.line = -val.line; |
| 1890 | break; |
| 1891 | |
| 1892 | case LINE_OFFSET_NONE: |
| 1893 | break; /* No need to adjust val.line. */ |
| 1894 | } |
| 1895 | |
| 1896 | if (self->list_mode) |
| 1897 | decode_digits_list_mode (self, ls, &values, val); |
| 1898 | else |
| 1899 | { |
| 1900 | struct linetable_entry *best_entry = NULL; |
| 1901 | int *filter; |
| 1902 | const struct block **blocks; |
| 1903 | struct cleanup *cleanup; |
| 1904 | struct symtabs_and_lines intermediate_results; |
| 1905 | int i, j; |
| 1906 | |
| 1907 | intermediate_results.sals = NULL; |
| 1908 | intermediate_results.nelts = 0; |
| 1909 | |
| 1910 | decode_digits_ordinary (self, ls, val.line, &intermediate_results, |
| 1911 | &best_entry); |
| 1912 | if (intermediate_results.nelts == 0 && best_entry != NULL) |
| 1913 | decode_digits_ordinary (self, ls, best_entry->line, |
| 1914 | &intermediate_results, &best_entry); |
| 1915 | |
| 1916 | cleanup = make_cleanup (xfree, intermediate_results.sals); |
| 1917 | |
| 1918 | /* For optimized code, the compiler can scatter one source line |
| 1919 | across disjoint ranges of PC values, even when no duplicate |
| 1920 | functions or inline functions are involved. For example, |
| 1921 | 'for (;;)' inside a non-template, non-inline, and non-ctor-or-dtor |
| 1922 | function can result in two PC ranges. In this case, we don't |
| 1923 | want to set a breakpoint on the first PC of each range. To filter |
| 1924 | such cases, we use containing blocks -- for each PC found |
| 1925 | above, we see if there are other PCs that are in the same |
| 1926 | block. If yes, the other PCs are filtered out. */ |
| 1927 | |
| 1928 | filter = XNEWVEC (int, intermediate_results.nelts); |
| 1929 | make_cleanup (xfree, filter); |
| 1930 | blocks = XNEWVEC (const struct block *, intermediate_results.nelts); |
| 1931 | make_cleanup (xfree, blocks); |
| 1932 | |
| 1933 | for (i = 0; i < intermediate_results.nelts; ++i) |
| 1934 | { |
| 1935 | set_current_program_space (intermediate_results.sals[i].pspace); |
| 1936 | |
| 1937 | filter[i] = 1; |
| 1938 | blocks[i] = block_for_pc_sect (intermediate_results.sals[i].pc, |
| 1939 | intermediate_results.sals[i].section); |
| 1940 | } |
| 1941 | |
| 1942 | for (i = 0; i < intermediate_results.nelts; ++i) |
| 1943 | { |
| 1944 | if (blocks[i] != NULL) |
| 1945 | for (j = i + 1; j < intermediate_results.nelts; ++j) |
| 1946 | { |
| 1947 | if (blocks[j] == blocks[i]) |
| 1948 | { |
| 1949 | filter[j] = 0; |
| 1950 | break; |
| 1951 | } |
| 1952 | } |
| 1953 | } |
| 1954 | |
| 1955 | for (i = 0; i < intermediate_results.nelts; ++i) |
| 1956 | if (filter[i]) |
| 1957 | { |
| 1958 | struct symbol *sym = (blocks[i] |
| 1959 | ? block_containing_function (blocks[i]) |
| 1960 | : NULL); |
| 1961 | |
| 1962 | if (self->funfirstline) |
| 1963 | skip_prologue_sal (&intermediate_results.sals[i]); |
| 1964 | /* Make sure the line matches the request, not what was |
| 1965 | found. */ |
| 1966 | intermediate_results.sals[i].line = val.line; |
| 1967 | add_sal_to_sals (self, &values, &intermediate_results.sals[i], |
| 1968 | sym ? SYMBOL_NATURAL_NAME (sym) : NULL, 0); |
| 1969 | } |
| 1970 | |
| 1971 | do_cleanups (cleanup); |
| 1972 | } |
| 1973 | |
| 1974 | if (values.nelts == 0) |
| 1975 | { |
| 1976 | if (ls->source_filename) |
| 1977 | throw_error (NOT_FOUND_ERROR, _("No line %d in file \"%s\"."), |
| 1978 | val.line, ls->source_filename); |
| 1979 | else |
| 1980 | throw_error (NOT_FOUND_ERROR, _("No line %d in the current file."), |
| 1981 | val.line); |
| 1982 | } |
| 1983 | |
| 1984 | return values; |
| 1985 | } |
| 1986 | |
| 1987 | /* Create and return SALs from the linespec LS. */ |
| 1988 | |
| 1989 | static struct symtabs_and_lines |
| 1990 | convert_linespec_to_sals (struct linespec_state *state, linespec_p ls) |
| 1991 | { |
| 1992 | struct symtabs_and_lines sals = {NULL, 0}; |
| 1993 | |
| 1994 | if (ls->expression != NULL) |
| 1995 | { |
| 1996 | struct symtab_and_line sal; |
| 1997 | |
| 1998 | /* We have an expression. No other attribute is allowed. */ |
| 1999 | sal = find_pc_line (ls->expr_pc, 0); |
| 2000 | sal.pc = ls->expr_pc; |
| 2001 | sal.section = find_pc_overlay (ls->expr_pc); |
| 2002 | sal.explicit_pc = 1; |
| 2003 | add_sal_to_sals (state, &sals, &sal, ls->expression, 1); |
| 2004 | } |
| 2005 | else if (ls->labels.label_symbols != NULL) |
| 2006 | { |
| 2007 | /* We have just a bunch of functions/methods or labels. */ |
| 2008 | int i; |
| 2009 | struct symtab_and_line sal; |
| 2010 | struct symbol *sym; |
| 2011 | |
| 2012 | for (i = 0; VEC_iterate (symbolp, ls->labels.label_symbols, i, sym); ++i) |
| 2013 | { |
| 2014 | struct program_space *pspace = SYMTAB_PSPACE (symbol_symtab (sym)); |
| 2015 | |
| 2016 | if (symbol_to_sal (&sal, state->funfirstline, sym) |
| 2017 | && maybe_add_address (state->addr_set, pspace, sal.pc)) |
| 2018 | add_sal_to_sals (state, &sals, &sal, |
| 2019 | SYMBOL_NATURAL_NAME (sym), 0); |
| 2020 | } |
| 2021 | } |
| 2022 | else if (ls->function_symbols != NULL || ls->minimal_symbols != NULL) |
| 2023 | { |
| 2024 | /* We have just a bunch of functions and/or methods. */ |
| 2025 | int i; |
| 2026 | struct symtab_and_line sal; |
| 2027 | struct symbol *sym; |
| 2028 | bound_minimal_symbol_d *elem; |
| 2029 | struct program_space *pspace; |
| 2030 | |
| 2031 | if (ls->function_symbols != NULL) |
| 2032 | { |
| 2033 | /* Sort symbols so that symbols with the same program space are next |
| 2034 | to each other. */ |
| 2035 | qsort (VEC_address (symbolp, ls->function_symbols), |
| 2036 | VEC_length (symbolp, ls->function_symbols), |
| 2037 | sizeof (symbolp), compare_symbols); |
| 2038 | |
| 2039 | for (i = 0; VEC_iterate (symbolp, ls->function_symbols, i, sym); ++i) |
| 2040 | { |
| 2041 | pspace = SYMTAB_PSPACE (symbol_symtab (sym)); |
| 2042 | set_current_program_space (pspace); |
| 2043 | if (symbol_to_sal (&sal, state->funfirstline, sym) |
| 2044 | && maybe_add_address (state->addr_set, pspace, sal.pc)) |
| 2045 | add_sal_to_sals (state, &sals, &sal, |
| 2046 | SYMBOL_NATURAL_NAME (sym), 0); |
| 2047 | } |
| 2048 | } |
| 2049 | |
| 2050 | if (ls->minimal_symbols != NULL) |
| 2051 | { |
| 2052 | /* Sort minimal symbols by program space, too. */ |
| 2053 | qsort (VEC_address (bound_minimal_symbol_d, ls->minimal_symbols), |
| 2054 | VEC_length (bound_minimal_symbol_d, ls->minimal_symbols), |
| 2055 | sizeof (bound_minimal_symbol_d), compare_msymbols); |
| 2056 | |
| 2057 | for (i = 0; |
| 2058 | VEC_iterate (bound_minimal_symbol_d, ls->minimal_symbols, |
| 2059 | i, elem); |
| 2060 | ++i) |
| 2061 | { |
| 2062 | pspace = elem->objfile->pspace; |
| 2063 | set_current_program_space (pspace); |
| 2064 | minsym_found (state, elem->objfile, elem->minsym, &sals); |
| 2065 | } |
| 2066 | } |
| 2067 | } |
| 2068 | else if (ls->line_offset.sign != LINE_OFFSET_UNKNOWN) |
| 2069 | { |
| 2070 | /* Only an offset was specified. */ |
| 2071 | sals = create_sals_line_offset (state, ls); |
| 2072 | |
| 2073 | /* Make sure we have a filename for canonicalization. */ |
| 2074 | if (ls->source_filename == NULL) |
| 2075 | { |
| 2076 | const char *fullname = symtab_to_fullname (state->default_symtab); |
| 2077 | |
| 2078 | /* It may be more appropriate to keep DEFAULT_SYMTAB in its symtab |
| 2079 | form so that displaying SOURCE_FILENAME can follow the current |
| 2080 | FILENAME_DISPLAY_STRING setting. But as it is used only rarely |
| 2081 | it has been kept for code simplicity only in absolute form. */ |
| 2082 | ls->source_filename = xstrdup (fullname); |
| 2083 | } |
| 2084 | } |
| 2085 | else |
| 2086 | { |
| 2087 | /* We haven't found any results... */ |
| 2088 | return sals; |
| 2089 | } |
| 2090 | |
| 2091 | canonicalize_linespec (state, ls); |
| 2092 | |
| 2093 | if (sals.nelts > 0 && state->canonical != NULL) |
| 2094 | state->canonical->pre_expanded = 1; |
| 2095 | |
| 2096 | return sals; |
| 2097 | } |
| 2098 | |
| 2099 | /* Parse a string that specifies a linespec. |
| 2100 | Pass the address of a char * variable; that variable will be |
| 2101 | advanced over the characters actually parsed. |
| 2102 | |
| 2103 | The basic grammar of linespecs: |
| 2104 | |
| 2105 | linespec -> expr_spec | var_spec | basic_spec |
| 2106 | expr_spec -> '*' STRING |
| 2107 | var_spec -> '$' (STRING | NUMBER) |
| 2108 | |
| 2109 | basic_spec -> file_offset_spec | function_spec | label_spec |
| 2110 | file_offset_spec -> opt_file_spec offset_spec |
| 2111 | function_spec -> opt_file_spec function_name_spec opt_label_spec |
| 2112 | label_spec -> label_name_spec |
| 2113 | |
| 2114 | opt_file_spec -> "" | file_name_spec ':' |
| 2115 | opt_label_spec -> "" | ':' label_name_spec |
| 2116 | |
| 2117 | file_name_spec -> STRING |
| 2118 | function_name_spec -> STRING |
| 2119 | label_name_spec -> STRING |
| 2120 | function_name_spec -> STRING |
| 2121 | offset_spec -> NUMBER |
| 2122 | -> '+' NUMBER |
| 2123 | -> '-' NUMBER |
| 2124 | |
| 2125 | This may all be followed by several keywords such as "if EXPR", |
| 2126 | which we ignore. |
| 2127 | |
| 2128 | A comma will terminate parsing. |
| 2129 | |
| 2130 | The function may be an undebuggable function found in minimal symbol table. |
| 2131 | |
| 2132 | If the argument FUNFIRSTLINE is nonzero, we want the first line |
| 2133 | of real code inside a function when a function is specified, and it is |
| 2134 | not OK to specify a variable or type to get its line number. |
| 2135 | |
| 2136 | DEFAULT_SYMTAB specifies the file to use if none is specified. |
| 2137 | It defaults to current_source_symtab. |
| 2138 | DEFAULT_LINE specifies the line number to use for relative |
| 2139 | line numbers (that start with signs). Defaults to current_source_line. |
| 2140 | If CANONICAL is non-NULL, store an array of strings containing the canonical |
| 2141 | line specs there if necessary. Currently overloaded member functions and |
| 2142 | line numbers or static functions without a filename yield a canonical |
| 2143 | line spec. The array and the line spec strings are allocated on the heap, |
| 2144 | it is the callers responsibility to free them. |
| 2145 | |
| 2146 | Note that it is possible to return zero for the symtab |
| 2147 | if no file is validly specified. Callers must check that. |
| 2148 | Also, the line number returned may be invalid. */ |
| 2149 | |
| 2150 | /* Parse the linespec in ARGPTR. */ |
| 2151 | |
| 2152 | static struct symtabs_and_lines |
| 2153 | parse_linespec (linespec_parser *parser, const char **argptr) |
| 2154 | { |
| 2155 | linespec_token token; |
| 2156 | struct symtabs_and_lines values; |
| 2157 | volatile struct gdb_exception file_exception; |
| 2158 | struct cleanup *cleanup; |
| 2159 | |
| 2160 | /* A special case to start. It has become quite popular for |
| 2161 | IDEs to work around bugs in the previous parser by quoting |
| 2162 | the entire linespec, so we attempt to deal with this nicely. */ |
| 2163 | parser->is_quote_enclosed = 0; |
| 2164 | if (!is_ada_operator (*argptr) |
| 2165 | && strchr (linespec_quote_characters, **argptr) != NULL) |
| 2166 | { |
| 2167 | const char *end; |
| 2168 | |
| 2169 | end = skip_quote_char (*argptr + 1, **argptr); |
| 2170 | if (end != NULL && is_closing_quote_enclosed (end)) |
| 2171 | { |
| 2172 | /* Here's the special case. Skip ARGPTR past the initial |
| 2173 | quote. */ |
| 2174 | ++(*argptr); |
| 2175 | parser->is_quote_enclosed = 1; |
| 2176 | } |
| 2177 | } |
| 2178 | |
| 2179 | /* A keyword at the start cannot be interpreted as such. |
| 2180 | Consider "b thread thread 42". */ |
| 2181 | parser->keyword_ok = 0; |
| 2182 | |
| 2183 | parser->lexer.saved_arg = *argptr; |
| 2184 | parser->lexer.stream = argptr; |
| 2185 | file_exception.reason = 0; |
| 2186 | |
| 2187 | /* Initialize the default symtab and line offset. */ |
| 2188 | initialize_defaults (&PARSER_STATE (parser)->default_symtab, |
| 2189 | &PARSER_STATE (parser)->default_line); |
| 2190 | |
| 2191 | /* Objective-C shortcut. */ |
| 2192 | values = decode_objc (PARSER_STATE (parser), PARSER_RESULT (parser), argptr); |
| 2193 | if (values.sals != NULL) |
| 2194 | return values; |
| 2195 | |
| 2196 | /* Start parsing. */ |
| 2197 | |
| 2198 | /* Get the first token. */ |
| 2199 | token = linespec_lexer_lex_one (parser); |
| 2200 | |
| 2201 | /* It must be either LSTOKEN_STRING or LSTOKEN_NUMBER. */ |
| 2202 | if (token.type == LSTOKEN_STRING && *LS_TOKEN_STOKEN (token).ptr == '*') |
| 2203 | { |
| 2204 | char *expr; |
| 2205 | const char *copy; |
| 2206 | |
| 2207 | /* User specified an expression, *EXPR. */ |
| 2208 | copy = expr = copy_token_string (token); |
| 2209 | cleanup = make_cleanup (xfree, expr); |
| 2210 | PARSER_RESULT (parser)->expr_pc = linespec_expression_to_pc (©); |
| 2211 | discard_cleanups (cleanup); |
| 2212 | PARSER_RESULT (parser)->expression = expr; |
| 2213 | |
| 2214 | /* This is a little hacky/tricky. If linespec_expression_to_pc |
| 2215 | did not evaluate the entire token, then we must find the |
| 2216 | string COPY inside the original token buffer. */ |
| 2217 | if (*copy != '\0') |
| 2218 | { |
| 2219 | PARSER_STREAM (parser) = strstr (parser->lexer.saved_arg, copy); |
| 2220 | gdb_assert (PARSER_STREAM (parser) != NULL); |
| 2221 | } |
| 2222 | |
| 2223 | /* Consume the token. */ |
| 2224 | linespec_lexer_consume_token (parser); |
| 2225 | |
| 2226 | goto convert_to_sals; |
| 2227 | } |
| 2228 | else if (token.type == LSTOKEN_STRING && *LS_TOKEN_STOKEN (token).ptr == '$') |
| 2229 | { |
| 2230 | char *var; |
| 2231 | |
| 2232 | /* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */ |
| 2233 | VEC_safe_push (symtab_ptr, PARSER_RESULT (parser)->file_symtabs, NULL); |
| 2234 | |
| 2235 | /* User specified a convenience variable or history value. */ |
| 2236 | var = copy_token_string (token); |
| 2237 | cleanup = make_cleanup (xfree, var); |
| 2238 | PARSER_RESULT (parser)->line_offset |
| 2239 | = linespec_parse_variable (PARSER_STATE (parser), var); |
| 2240 | do_cleanups (cleanup); |
| 2241 | |
| 2242 | /* If a line_offset wasn't found (VAR is the name of a user |
| 2243 | variable/function), then skip to normal symbol processing. */ |
| 2244 | if (PARSER_RESULT (parser)->line_offset.sign != LINE_OFFSET_UNKNOWN) |
| 2245 | { |
| 2246 | /* Consume this token. */ |
| 2247 | linespec_lexer_consume_token (parser); |
| 2248 | |
| 2249 | goto convert_to_sals; |
| 2250 | } |
| 2251 | } |
| 2252 | else if (token.type != LSTOKEN_STRING && token.type != LSTOKEN_NUMBER) |
| 2253 | unexpected_linespec_error (parser); |
| 2254 | |
| 2255 | /* Now we can recognize keywords. */ |
| 2256 | parser->keyword_ok = 1; |
| 2257 | |
| 2258 | /* Shortcut: If the next token is not LSTOKEN_COLON, we know that |
| 2259 | this token cannot represent a filename. */ |
| 2260 | token = linespec_lexer_peek_token (parser); |
| 2261 | |
| 2262 | if (token.type == LSTOKEN_COLON) |
| 2263 | { |
| 2264 | char *user_filename; |
| 2265 | |
| 2266 | /* Get the current token again and extract the filename. */ |
| 2267 | token = linespec_lexer_lex_one (parser); |
| 2268 | user_filename = copy_token_string (token); |
| 2269 | |
| 2270 | /* Check if the input is a filename. */ |
| 2271 | TRY_CATCH (file_exception, RETURN_MASK_ERROR) |
| 2272 | { |
| 2273 | PARSER_RESULT (parser)->file_symtabs |
| 2274 | = symtabs_from_filename (user_filename); |
| 2275 | } |
| 2276 | |
| 2277 | if (file_exception.reason >= 0) |
| 2278 | { |
| 2279 | /* Symtabs were found for the file. Record the filename. */ |
| 2280 | PARSER_RESULT (parser)->source_filename = user_filename; |
| 2281 | |
| 2282 | /* Get the next token. */ |
| 2283 | token = linespec_lexer_consume_token (parser); |
| 2284 | |
| 2285 | /* This is LSTOKEN_COLON; consume it. */ |
| 2286 | linespec_lexer_consume_token (parser); |
| 2287 | } |
| 2288 | else |
| 2289 | { |
| 2290 | /* No symtabs found -- discard user_filename. */ |
| 2291 | xfree (user_filename); |
| 2292 | |
| 2293 | /* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */ |
| 2294 | VEC_safe_push (symtab_ptr, PARSER_RESULT (parser)->file_symtabs, NULL); |
| 2295 | } |
| 2296 | } |
| 2297 | /* If the next token is not EOI, KEYWORD, or COMMA, issue an error. */ |
| 2298 | else if (token.type != LSTOKEN_EOI && token.type != LSTOKEN_KEYWORD |
| 2299 | && token.type != LSTOKEN_COMMA) |
| 2300 | { |
| 2301 | /* TOKEN is the _next_ token, not the one currently in the parser. |
| 2302 | Consuming the token will give the correct error message. */ |
| 2303 | linespec_lexer_consume_token (parser); |
| 2304 | unexpected_linespec_error (parser); |
| 2305 | } |
| 2306 | else |
| 2307 | { |
| 2308 | /* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */ |
| 2309 | VEC_safe_push (symtab_ptr, PARSER_RESULT (parser)->file_symtabs, NULL); |
| 2310 | } |
| 2311 | |
| 2312 | /* Parse the rest of the linespec. */ |
| 2313 | linespec_parse_basic (parser); |
| 2314 | |
| 2315 | if (PARSER_RESULT (parser)->function_symbols == NULL |
| 2316 | && PARSER_RESULT (parser)->labels.label_symbols == NULL |
| 2317 | && PARSER_RESULT (parser)->line_offset.sign == LINE_OFFSET_UNKNOWN |
| 2318 | && PARSER_RESULT (parser)->minimal_symbols == NULL) |
| 2319 | { |
| 2320 | /* The linespec didn't parse. Re-throw the file exception if |
| 2321 | there was one. */ |
| 2322 | if (file_exception.reason < 0) |
| 2323 | throw_exception (file_exception); |
| 2324 | |
| 2325 | /* Otherwise, the symbol is not found. */ |
| 2326 | symbol_not_found_error (PARSER_RESULT (parser)->function_name, |
| 2327 | PARSER_RESULT (parser)->source_filename); |
| 2328 | } |
| 2329 | |
| 2330 | convert_to_sals: |
| 2331 | |
| 2332 | /* Get the last token and record how much of the input was parsed, |
| 2333 | if necessary. */ |
| 2334 | token = linespec_lexer_lex_one (parser); |
| 2335 | if (token.type != LSTOKEN_EOI && token.type != LSTOKEN_KEYWORD) |
| 2336 | PARSER_STREAM (parser) = LS_TOKEN_STOKEN (token).ptr; |
| 2337 | |
| 2338 | /* Convert the data in PARSER_RESULT to SALs. */ |
| 2339 | values = convert_linespec_to_sals (PARSER_STATE (parser), |
| 2340 | PARSER_RESULT (parser)); |
| 2341 | |
| 2342 | return values; |
| 2343 | } |
| 2344 | |
| 2345 | |
| 2346 | /* A constructor for linespec_state. */ |
| 2347 | |
| 2348 | static void |
| 2349 | linespec_state_constructor (struct linespec_state *self, |
| 2350 | int flags, const struct language_defn *language, |
| 2351 | struct symtab *default_symtab, |
| 2352 | int default_line, |
| 2353 | struct linespec_result *canonical) |
| 2354 | { |
| 2355 | memset (self, 0, sizeof (*self)); |
| 2356 | self->language = language; |
| 2357 | self->funfirstline = (flags & DECODE_LINE_FUNFIRSTLINE) ? 1 : 0; |
| 2358 | self->list_mode = (flags & DECODE_LINE_LIST_MODE) ? 1 : 0; |
| 2359 | self->default_symtab = default_symtab; |
| 2360 | self->default_line = default_line; |
| 2361 | self->canonical = canonical; |
| 2362 | self->program_space = current_program_space; |
| 2363 | self->addr_set = htab_create_alloc (10, hash_address_entry, eq_address_entry, |
| 2364 | xfree, xcalloc, xfree); |
| 2365 | } |
| 2366 | |
| 2367 | /* Initialize a new linespec parser. */ |
| 2368 | |
| 2369 | static void |
| 2370 | linespec_parser_new (linespec_parser *parser, |
| 2371 | int flags, const struct language_defn *language, |
| 2372 | struct symtab *default_symtab, |
| 2373 | int default_line, |
| 2374 | struct linespec_result *canonical) |
| 2375 | { |
| 2376 | parser->lexer.current.type = LSTOKEN_CONSUMED; |
| 2377 | memset (PARSER_RESULT (parser), 0, sizeof (struct linespec)); |
| 2378 | PARSER_RESULT (parser)->line_offset.sign = LINE_OFFSET_UNKNOWN; |
| 2379 | linespec_state_constructor (PARSER_STATE (parser), flags, language, |
| 2380 | default_symtab, default_line, canonical); |
| 2381 | } |
| 2382 | |
| 2383 | /* A destructor for linespec_state. */ |
| 2384 | |
| 2385 | static void |
| 2386 | linespec_state_destructor (struct linespec_state *self) |
| 2387 | { |
| 2388 | htab_delete (self->addr_set); |
| 2389 | } |
| 2390 | |
| 2391 | /* Delete a linespec parser. */ |
| 2392 | |
| 2393 | static void |
| 2394 | linespec_parser_delete (void *arg) |
| 2395 | { |
| 2396 | linespec_parser *parser = (linespec_parser *) arg; |
| 2397 | |
| 2398 | xfree ((char *) PARSER_RESULT (parser)->expression); |
| 2399 | xfree ((char *) PARSER_RESULT (parser)->source_filename); |
| 2400 | xfree ((char *) PARSER_RESULT (parser)->label_name); |
| 2401 | xfree ((char *) PARSER_RESULT (parser)->function_name); |
| 2402 | |
| 2403 | if (PARSER_RESULT (parser)->file_symtabs != NULL) |
| 2404 | VEC_free (symtab_ptr, PARSER_RESULT (parser)->file_symtabs); |
| 2405 | |
| 2406 | if (PARSER_RESULT (parser)->function_symbols != NULL) |
| 2407 | VEC_free (symbolp, PARSER_RESULT (parser)->function_symbols); |
| 2408 | |
| 2409 | if (PARSER_RESULT (parser)->minimal_symbols != NULL) |
| 2410 | VEC_free (bound_minimal_symbol_d, PARSER_RESULT (parser)->minimal_symbols); |
| 2411 | |
| 2412 | if (PARSER_RESULT (parser)->labels.label_symbols != NULL) |
| 2413 | VEC_free (symbolp, PARSER_RESULT (parser)->labels.label_symbols); |
| 2414 | |
| 2415 | if (PARSER_RESULT (parser)->labels.function_symbols != NULL) |
| 2416 | VEC_free (symbolp, PARSER_RESULT (parser)->labels.function_symbols); |
| 2417 | |
| 2418 | linespec_state_destructor (PARSER_STATE (parser)); |
| 2419 | } |
| 2420 | |
| 2421 | /* See linespec.h. */ |
| 2422 | |
| 2423 | void |
| 2424 | decode_line_full (char **argptr, int flags, |
| 2425 | struct symtab *default_symtab, |
| 2426 | int default_line, struct linespec_result *canonical, |
| 2427 | const char *select_mode, |
| 2428 | const char *filter) |
| 2429 | { |
| 2430 | struct symtabs_and_lines result; |
| 2431 | struct cleanup *cleanups; |
| 2432 | VEC (const_char_ptr) *filters = NULL; |
| 2433 | linespec_parser parser; |
| 2434 | struct linespec_state *state; |
| 2435 | const char *copy, *orig; |
| 2436 | |
| 2437 | gdb_assert (canonical != NULL); |
| 2438 | /* The filter only makes sense for 'all'. */ |
| 2439 | gdb_assert (filter == NULL || select_mode == multiple_symbols_all); |
| 2440 | gdb_assert (select_mode == NULL |
| 2441 | || select_mode == multiple_symbols_all |
| 2442 | || select_mode == multiple_symbols_ask |
| 2443 | || select_mode == multiple_symbols_cancel); |
| 2444 | gdb_assert ((flags & DECODE_LINE_LIST_MODE) == 0); |
| 2445 | |
| 2446 | linespec_parser_new (&parser, flags, current_language, default_symtab, |
| 2447 | default_line, canonical); |
| 2448 | cleanups = make_cleanup (linespec_parser_delete, &parser); |
| 2449 | save_current_program_space (); |
| 2450 | |
| 2451 | orig = copy = *argptr; |
| 2452 | result = parse_linespec (&parser, ©); |
| 2453 | *argptr += copy - orig; |
| 2454 | state = PARSER_STATE (&parser); |
| 2455 | |
| 2456 | gdb_assert (result.nelts == 1 || canonical->pre_expanded); |
| 2457 | gdb_assert (canonical->addr_string != NULL); |
| 2458 | canonical->pre_expanded = 1; |
| 2459 | |
| 2460 | /* Arrange for allocated canonical names to be freed. */ |
| 2461 | if (result.nelts > 0) |
| 2462 | { |
| 2463 | int i; |
| 2464 | |
| 2465 | make_cleanup (xfree, state->canonical_names); |
| 2466 | for (i = 0; i < result.nelts; ++i) |
| 2467 | { |
| 2468 | gdb_assert (state->canonical_names[i].suffix != NULL); |
| 2469 | make_cleanup (xfree, state->canonical_names[i].suffix); |
| 2470 | } |
| 2471 | } |
| 2472 | |
| 2473 | if (select_mode == NULL) |
| 2474 | { |
| 2475 | if (ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ()))) |
| 2476 | select_mode = multiple_symbols_all; |
| 2477 | else |
| 2478 | select_mode = multiple_symbols_select_mode (); |
| 2479 | } |
| 2480 | |
| 2481 | if (select_mode == multiple_symbols_all) |
| 2482 | { |
| 2483 | if (filter != NULL) |
| 2484 | { |
| 2485 | make_cleanup (VEC_cleanup (const_char_ptr), &filters); |
| 2486 | VEC_safe_push (const_char_ptr, filters, filter); |
| 2487 | filter_results (state, &result, filters); |
| 2488 | } |
| 2489 | else |
| 2490 | convert_results_to_lsals (state, &result); |
| 2491 | } |
| 2492 | else |
| 2493 | decode_line_2 (state, &result, select_mode); |
| 2494 | |
| 2495 | do_cleanups (cleanups); |
| 2496 | } |
| 2497 | |
| 2498 | /* See linespec.h. */ |
| 2499 | |
| 2500 | struct symtabs_and_lines |
| 2501 | decode_line_1 (char **argptr, int flags, |
| 2502 | struct symtab *default_symtab, |
| 2503 | int default_line) |
| 2504 | { |
| 2505 | struct symtabs_and_lines result; |
| 2506 | linespec_parser parser; |
| 2507 | struct cleanup *cleanups; |
| 2508 | const char *copy, *orig; |
| 2509 | |
| 2510 | linespec_parser_new (&parser, flags, current_language, default_symtab, |
| 2511 | default_line, NULL); |
| 2512 | cleanups = make_cleanup (linespec_parser_delete, &parser); |
| 2513 | save_current_program_space (); |
| 2514 | |
| 2515 | orig = copy = *argptr; |
| 2516 | result = parse_linespec (&parser, ©); |
| 2517 | *argptr += copy - orig; |
| 2518 | |
| 2519 | do_cleanups (cleanups); |
| 2520 | return result; |
| 2521 | } |
| 2522 | |
| 2523 | /* See linespec.h. */ |
| 2524 | |
| 2525 | struct symtabs_and_lines |
| 2526 | decode_line_with_current_source (char *string, int flags) |
| 2527 | { |
| 2528 | struct symtabs_and_lines sals; |
| 2529 | struct symtab_and_line cursal; |
| 2530 | |
| 2531 | if (string == 0) |
| 2532 | error (_("Empty line specification.")); |
| 2533 | |
| 2534 | /* We use whatever is set as the current source line. We do not try |
| 2535 | and get a default source symtab+line or it will recursively call us! */ |
| 2536 | cursal = get_current_source_symtab_and_line (); |
| 2537 | |
| 2538 | sals = decode_line_1 (&string, flags, |
| 2539 | cursal.symtab, cursal.line); |
| 2540 | |
| 2541 | if (*string) |
| 2542 | error (_("Junk at end of line specification: %s"), string); |
| 2543 | return sals; |
| 2544 | } |
| 2545 | |
| 2546 | /* See linespec.h. */ |
| 2547 | |
| 2548 | struct symtabs_and_lines |
| 2549 | decode_line_with_last_displayed (char *string, int flags) |
| 2550 | { |
| 2551 | struct symtabs_and_lines sals; |
| 2552 | |
| 2553 | if (string == 0) |
| 2554 | error (_("Empty line specification.")); |
| 2555 | |
| 2556 | if (last_displayed_sal_is_valid ()) |
| 2557 | sals = decode_line_1 (&string, flags, |
| 2558 | get_last_displayed_symtab (), |
| 2559 | get_last_displayed_line ()); |
| 2560 | else |
| 2561 | sals = decode_line_1 (&string, flags, (struct symtab *) NULL, 0); |
| 2562 | |
| 2563 | if (*string) |
| 2564 | error (_("Junk at end of line specification: %s"), string); |
| 2565 | return sals; |
| 2566 | } |
| 2567 | |
| 2568 | \f |
| 2569 | |
| 2570 | /* First, some functions to initialize stuff at the beggining of the |
| 2571 | function. */ |
| 2572 | |
| 2573 | static void |
| 2574 | initialize_defaults (struct symtab **default_symtab, int *default_line) |
| 2575 | { |
| 2576 | if (*default_symtab == 0) |
| 2577 | { |
| 2578 | /* Use whatever we have for the default source line. We don't use |
| 2579 | get_current_or_default_symtab_and_line as it can recurse and call |
| 2580 | us back! */ |
| 2581 | struct symtab_and_line cursal = |
| 2582 | get_current_source_symtab_and_line (); |
| 2583 | |
| 2584 | *default_symtab = cursal.symtab; |
| 2585 | *default_line = cursal.line; |
| 2586 | } |
| 2587 | } |
| 2588 | |
| 2589 | \f |
| 2590 | |
| 2591 | /* Evaluate the expression pointed to by EXP_PTR into a CORE_ADDR, |
| 2592 | advancing EXP_PTR past any parsed text. */ |
| 2593 | |
| 2594 | static CORE_ADDR |
| 2595 | linespec_expression_to_pc (const char **exp_ptr) |
| 2596 | { |
| 2597 | if (current_program_space->executing_startup) |
| 2598 | /* The error message doesn't really matter, because this case |
| 2599 | should only hit during breakpoint reset. */ |
| 2600 | throw_error (NOT_FOUND_ERROR, _("cannot evaluate expressions while " |
| 2601 | "program space is in startup")); |
| 2602 | |
| 2603 | (*exp_ptr)++; |
| 2604 | return value_as_address (parse_to_comma_and_eval (exp_ptr)); |
| 2605 | } |
| 2606 | |
| 2607 | \f |
| 2608 | |
| 2609 | /* Here's where we recognise an Objective-C Selector. An Objective C |
| 2610 | selector may be implemented by more than one class, therefore it |
| 2611 | may represent more than one method/function. This gives us a |
| 2612 | situation somewhat analogous to C++ overloading. If there's more |
| 2613 | than one method that could represent the selector, then use some of |
| 2614 | the existing C++ code to let the user choose one. */ |
| 2615 | |
| 2616 | static struct symtabs_and_lines |
| 2617 | decode_objc (struct linespec_state *self, linespec_p ls, const char **argptr) |
| 2618 | { |
| 2619 | struct collect_info info; |
| 2620 | VEC (const_char_ptr) *symbol_names = NULL; |
| 2621 | struct symtabs_and_lines values; |
| 2622 | const char *new_argptr; |
| 2623 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (const_char_ptr), |
| 2624 | &symbol_names); |
| 2625 | |
| 2626 | info.state = self; |
| 2627 | info.file_symtabs = NULL; |
| 2628 | VEC_safe_push (symtab_ptr, info.file_symtabs, NULL); |
| 2629 | make_cleanup (VEC_cleanup (symtab_ptr), &info.file_symtabs); |
| 2630 | info.result.symbols = NULL; |
| 2631 | info.result.minimal_symbols = NULL; |
| 2632 | values.nelts = 0; |
| 2633 | values.sals = NULL; |
| 2634 | |
| 2635 | new_argptr = find_imps (*argptr, &symbol_names); |
| 2636 | if (VEC_empty (const_char_ptr, symbol_names)) |
| 2637 | { |
| 2638 | do_cleanups (cleanup); |
| 2639 | return values; |
| 2640 | } |
| 2641 | |
| 2642 | add_all_symbol_names_from_pspace (&info, NULL, symbol_names); |
| 2643 | |
| 2644 | if (!VEC_empty (symbolp, info.result.symbols) |
| 2645 | || !VEC_empty (bound_minimal_symbol_d, info.result.minimal_symbols)) |
| 2646 | { |
| 2647 | char *saved_arg; |
| 2648 | |
| 2649 | saved_arg = alloca (new_argptr - *argptr + 1); |
| 2650 | memcpy (saved_arg, *argptr, new_argptr - *argptr); |
| 2651 | saved_arg[new_argptr - *argptr] = '\0'; |
| 2652 | |
| 2653 | ls->function_name = xstrdup (saved_arg); |
| 2654 | ls->function_symbols = info.result.symbols; |
| 2655 | ls->minimal_symbols = info.result.minimal_symbols; |
| 2656 | values = convert_linespec_to_sals (self, ls); |
| 2657 | |
| 2658 | if (self->canonical) |
| 2659 | { |
| 2660 | self->canonical->pre_expanded = 1; |
| 2661 | if (ls->source_filename) |
| 2662 | self->canonical->addr_string |
| 2663 | = xstrprintf ("%s:%s", ls->source_filename, saved_arg); |
| 2664 | else |
| 2665 | self->canonical->addr_string = xstrdup (saved_arg); |
| 2666 | } |
| 2667 | } |
| 2668 | |
| 2669 | *argptr = new_argptr; |
| 2670 | |
| 2671 | do_cleanups (cleanup); |
| 2672 | |
| 2673 | return values; |
| 2674 | } |
| 2675 | |
| 2676 | /* An instance of this type is used when collecting prefix symbols for |
| 2677 | decode_compound. */ |
| 2678 | |
| 2679 | struct decode_compound_collector |
| 2680 | { |
| 2681 | /* The result vector. */ |
| 2682 | VEC (symbolp) *symbols; |
| 2683 | |
| 2684 | /* A hash table of all symbols we found. We use this to avoid |
| 2685 | adding any symbol more than once. */ |
| 2686 | htab_t unique_syms; |
| 2687 | }; |
| 2688 | |
| 2689 | /* A callback for iterate_over_symbols that is used by |
| 2690 | lookup_prefix_sym to collect type symbols. */ |
| 2691 | |
| 2692 | static int |
| 2693 | collect_one_symbol (struct symbol *sym, void *d) |
| 2694 | { |
| 2695 | struct decode_compound_collector *collector = d; |
| 2696 | void **slot; |
| 2697 | struct type *t; |
| 2698 | |
| 2699 | if (SYMBOL_CLASS (sym) != LOC_TYPEDEF) |
| 2700 | return 1; /* Continue iterating. */ |
| 2701 | |
| 2702 | t = SYMBOL_TYPE (sym); |
| 2703 | CHECK_TYPEDEF (t); |
| 2704 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
| 2705 | && TYPE_CODE (t) != TYPE_CODE_UNION |
| 2706 | && TYPE_CODE (t) != TYPE_CODE_NAMESPACE) |
| 2707 | return 1; /* Continue iterating. */ |
| 2708 | |
| 2709 | slot = htab_find_slot (collector->unique_syms, sym, INSERT); |
| 2710 | if (!*slot) |
| 2711 | { |
| 2712 | *slot = sym; |
| 2713 | VEC_safe_push (symbolp, collector->symbols, sym); |
| 2714 | } |
| 2715 | |
| 2716 | return 1; /* Continue iterating. */ |
| 2717 | } |
| 2718 | |
| 2719 | /* Return any symbols corresponding to CLASS_NAME in FILE_SYMTABS. */ |
| 2720 | |
| 2721 | static VEC (symbolp) * |
| 2722 | lookup_prefix_sym (struct linespec_state *state, VEC (symtab_ptr) *file_symtabs, |
| 2723 | const char *class_name) |
| 2724 | { |
| 2725 | int ix; |
| 2726 | struct symtab *elt; |
| 2727 | struct decode_compound_collector collector; |
| 2728 | struct cleanup *outer; |
| 2729 | struct cleanup *cleanup; |
| 2730 | |
| 2731 | collector.symbols = NULL; |
| 2732 | outer = make_cleanup (VEC_cleanup (symbolp), &collector.symbols); |
| 2733 | |
| 2734 | collector.unique_syms = htab_create_alloc (1, htab_hash_pointer, |
| 2735 | htab_eq_pointer, NULL, |
| 2736 | xcalloc, xfree); |
| 2737 | cleanup = make_cleanup_htab_delete (collector.unique_syms); |
| 2738 | |
| 2739 | for (ix = 0; VEC_iterate (symtab_ptr, file_symtabs, ix, elt); ++ix) |
| 2740 | { |
| 2741 | if (elt == NULL) |
| 2742 | { |
| 2743 | iterate_over_all_matching_symtabs (state, class_name, STRUCT_DOMAIN, |
| 2744 | collect_one_symbol, &collector, |
| 2745 | NULL, 0); |
| 2746 | iterate_over_all_matching_symtabs (state, class_name, VAR_DOMAIN, |
| 2747 | collect_one_symbol, &collector, |
| 2748 | NULL, 0); |
| 2749 | } |
| 2750 | else |
| 2751 | { |
| 2752 | /* Program spaces that are executing startup should have |
| 2753 | been filtered out earlier. */ |
| 2754 | gdb_assert (!SYMTAB_PSPACE (elt)->executing_startup); |
| 2755 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 2756 | iterate_over_file_blocks (elt, class_name, STRUCT_DOMAIN, |
| 2757 | collect_one_symbol, &collector); |
| 2758 | iterate_over_file_blocks (elt, class_name, VAR_DOMAIN, |
| 2759 | collect_one_symbol, &collector); |
| 2760 | } |
| 2761 | } |
| 2762 | |
| 2763 | do_cleanups (cleanup); |
| 2764 | discard_cleanups (outer); |
| 2765 | return collector.symbols; |
| 2766 | } |
| 2767 | |
| 2768 | /* A qsort comparison function for symbols. The resulting order does |
| 2769 | not actually matter; we just need to be able to sort them so that |
| 2770 | symbols with the same program space end up next to each other. */ |
| 2771 | |
| 2772 | static int |
| 2773 | compare_symbols (const void *a, const void *b) |
| 2774 | { |
| 2775 | struct symbol * const *sa = a; |
| 2776 | struct symbol * const *sb = b; |
| 2777 | uintptr_t uia, uib; |
| 2778 | |
| 2779 | uia = (uintptr_t) SYMTAB_PSPACE (symbol_symtab (*sa)); |
| 2780 | uib = (uintptr_t) SYMTAB_PSPACE (symbol_symtab (*sb)); |
| 2781 | |
| 2782 | if (uia < uib) |
| 2783 | return -1; |
| 2784 | if (uia > uib) |
| 2785 | return 1; |
| 2786 | |
| 2787 | uia = (uintptr_t) *sa; |
| 2788 | uib = (uintptr_t) *sb; |
| 2789 | |
| 2790 | if (uia < uib) |
| 2791 | return -1; |
| 2792 | if (uia > uib) |
| 2793 | return 1; |
| 2794 | |
| 2795 | return 0; |
| 2796 | } |
| 2797 | |
| 2798 | /* Like compare_symbols but for minimal symbols. */ |
| 2799 | |
| 2800 | static int |
| 2801 | compare_msymbols (const void *a, const void *b) |
| 2802 | { |
| 2803 | const struct bound_minimal_symbol *sa = a; |
| 2804 | const struct bound_minimal_symbol *sb = b; |
| 2805 | uintptr_t uia, uib; |
| 2806 | |
| 2807 | uia = (uintptr_t) sa->objfile->pspace; |
| 2808 | uib = (uintptr_t) sa->objfile->pspace; |
| 2809 | |
| 2810 | if (uia < uib) |
| 2811 | return -1; |
| 2812 | if (uia > uib) |
| 2813 | return 1; |
| 2814 | |
| 2815 | uia = (uintptr_t) sa->minsym; |
| 2816 | uib = (uintptr_t) sb->minsym; |
| 2817 | |
| 2818 | if (uia < uib) |
| 2819 | return -1; |
| 2820 | if (uia > uib) |
| 2821 | return 1; |
| 2822 | |
| 2823 | return 0; |
| 2824 | } |
| 2825 | |
| 2826 | /* Look for all the matching instances of each symbol in NAMES. Only |
| 2827 | instances from PSPACE are considered; other program spaces are |
| 2828 | handled by our caller. If PSPACE is NULL, then all program spaces |
| 2829 | are considered. Results are stored into INFO. */ |
| 2830 | |
| 2831 | static void |
| 2832 | add_all_symbol_names_from_pspace (struct collect_info *info, |
| 2833 | struct program_space *pspace, |
| 2834 | VEC (const_char_ptr) *names) |
| 2835 | { |
| 2836 | int ix; |
| 2837 | const char *iter; |
| 2838 | |
| 2839 | for (ix = 0; VEC_iterate (const_char_ptr, names, ix, iter); ++ix) |
| 2840 | add_matching_symbols_to_info (iter, info, pspace); |
| 2841 | } |
| 2842 | |
| 2843 | static void |
| 2844 | find_superclass_methods (VEC (typep) *superclasses, |
| 2845 | const char *name, |
| 2846 | VEC (const_char_ptr) **result_names) |
| 2847 | { |
| 2848 | int old_len = VEC_length (const_char_ptr, *result_names); |
| 2849 | VEC (typep) *iter_classes; |
| 2850 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
| 2851 | |
| 2852 | iter_classes = superclasses; |
| 2853 | while (1) |
| 2854 | { |
| 2855 | VEC (typep) *new_supers = NULL; |
| 2856 | int ix; |
| 2857 | struct type *t; |
| 2858 | |
| 2859 | make_cleanup (VEC_cleanup (typep), &new_supers); |
| 2860 | for (ix = 0; VEC_iterate (typep, iter_classes, ix, t); ++ix) |
| 2861 | find_methods (t, name, result_names, &new_supers); |
| 2862 | |
| 2863 | if (VEC_length (const_char_ptr, *result_names) != old_len |
| 2864 | || VEC_empty (typep, new_supers)) |
| 2865 | break; |
| 2866 | |
| 2867 | iter_classes = new_supers; |
| 2868 | } |
| 2869 | |
| 2870 | do_cleanups (cleanup); |
| 2871 | } |
| 2872 | |
| 2873 | /* This finds the method METHOD_NAME in the class CLASS_NAME whose type is |
| 2874 | given by one of the symbols in SYM_CLASSES. Matches are returned |
| 2875 | in SYMBOLS (for debug symbols) and MINSYMS (for minimal symbols). */ |
| 2876 | |
| 2877 | static void |
| 2878 | find_method (struct linespec_state *self, VEC (symtab_ptr) *file_symtabs, |
| 2879 | const char *class_name, const char *method_name, |
| 2880 | VEC (symbolp) *sym_classes, VEC (symbolp) **symbols, |
| 2881 | VEC (bound_minimal_symbol_d) **minsyms) |
| 2882 | { |
| 2883 | struct symbol *sym; |
| 2884 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
| 2885 | int ix; |
| 2886 | int last_result_len; |
| 2887 | VEC (typep) *superclass_vec; |
| 2888 | VEC (const_char_ptr) *result_names; |
| 2889 | struct collect_info info; |
| 2890 | |
| 2891 | /* Sort symbols so that symbols with the same program space are next |
| 2892 | to each other. */ |
| 2893 | qsort (VEC_address (symbolp, sym_classes), |
| 2894 | VEC_length (symbolp, sym_classes), |
| 2895 | sizeof (symbolp), |
| 2896 | compare_symbols); |
| 2897 | |
| 2898 | info.state = self; |
| 2899 | info.file_symtabs = file_symtabs; |
| 2900 | info.result.symbols = NULL; |
| 2901 | info.result.minimal_symbols = NULL; |
| 2902 | |
| 2903 | /* Iterate over all the types, looking for the names of existing |
| 2904 | methods matching METHOD_NAME. If we cannot find a direct method in a |
| 2905 | given program space, then we consider inherited methods; this is |
| 2906 | not ideal (ideal would be to respect C++ hiding rules), but it |
| 2907 | seems good enough and is what GDB has historically done. We only |
| 2908 | need to collect the names because later we find all symbols with |
| 2909 | those names. This loop is written in a somewhat funny way |
| 2910 | because we collect data across the program space before deciding |
| 2911 | what to do. */ |
| 2912 | superclass_vec = NULL; |
| 2913 | make_cleanup (VEC_cleanup (typep), &superclass_vec); |
| 2914 | result_names = NULL; |
| 2915 | make_cleanup (VEC_cleanup (const_char_ptr), &result_names); |
| 2916 | last_result_len = 0; |
| 2917 | for (ix = 0; VEC_iterate (symbolp, sym_classes, ix, sym); ++ix) |
| 2918 | { |
| 2919 | struct type *t; |
| 2920 | struct program_space *pspace; |
| 2921 | |
| 2922 | /* Program spaces that are executing startup should have |
| 2923 | been filtered out earlier. */ |
| 2924 | pspace = SYMTAB_PSPACE (symbol_symtab (sym)); |
| 2925 | gdb_assert (!pspace->executing_startup); |
| 2926 | set_current_program_space (pspace); |
| 2927 | t = check_typedef (SYMBOL_TYPE (sym)); |
| 2928 | find_methods (t, method_name, &result_names, &superclass_vec); |
| 2929 | |
| 2930 | /* Handle all items from a single program space at once; and be |
| 2931 | sure not to miss the last batch. */ |
| 2932 | if (ix == VEC_length (symbolp, sym_classes) - 1 |
| 2933 | || (pspace |
| 2934 | != SYMTAB_PSPACE (symbol_symtab (VEC_index (symbolp, sym_classes, |
| 2935 | ix + 1))))) |
| 2936 | { |
| 2937 | /* If we did not find a direct implementation anywhere in |
| 2938 | this program space, consider superclasses. */ |
| 2939 | if (VEC_length (const_char_ptr, result_names) == last_result_len) |
| 2940 | find_superclass_methods (superclass_vec, method_name, |
| 2941 | &result_names); |
| 2942 | |
| 2943 | /* We have a list of candidate symbol names, so now we |
| 2944 | iterate over the symbol tables looking for all |
| 2945 | matches in this pspace. */ |
| 2946 | add_all_symbol_names_from_pspace (&info, pspace, result_names); |
| 2947 | |
| 2948 | VEC_truncate (typep, superclass_vec, 0); |
| 2949 | last_result_len = VEC_length (const_char_ptr, result_names); |
| 2950 | } |
| 2951 | } |
| 2952 | |
| 2953 | if (!VEC_empty (symbolp, info.result.symbols) |
| 2954 | || !VEC_empty (bound_minimal_symbol_d, info.result.minimal_symbols)) |
| 2955 | { |
| 2956 | *symbols = info.result.symbols; |
| 2957 | *minsyms = info.result.minimal_symbols; |
| 2958 | do_cleanups (cleanup); |
| 2959 | return; |
| 2960 | } |
| 2961 | |
| 2962 | /* Throw an NOT_FOUND_ERROR. This will be caught by the caller |
| 2963 | and other attempts to locate the symbol will be made. */ |
| 2964 | throw_error (NOT_FOUND_ERROR, _("see caller, this text doesn't matter")); |
| 2965 | } |
| 2966 | |
| 2967 | \f |
| 2968 | |
| 2969 | /* This object is used when collecting all matching symtabs. */ |
| 2970 | |
| 2971 | struct symtab_collector |
| 2972 | { |
| 2973 | /* The result vector of symtabs. */ |
| 2974 | VEC (symtab_ptr) *symtabs; |
| 2975 | |
| 2976 | /* This is used to ensure the symtabs are unique. */ |
| 2977 | htab_t symtab_table; |
| 2978 | }; |
| 2979 | |
| 2980 | /* Callback for iterate_over_symtabs. */ |
| 2981 | |
| 2982 | static int |
| 2983 | add_symtabs_to_list (struct symtab *symtab, void *d) |
| 2984 | { |
| 2985 | struct symtab_collector *data = d; |
| 2986 | void **slot; |
| 2987 | |
| 2988 | slot = htab_find_slot (data->symtab_table, symtab, INSERT); |
| 2989 | if (!*slot) |
| 2990 | { |
| 2991 | *slot = symtab; |
| 2992 | VEC_safe_push (symtab_ptr, data->symtabs, symtab); |
| 2993 | } |
| 2994 | |
| 2995 | return 0; |
| 2996 | } |
| 2997 | |
| 2998 | /* Given a file name, return a VEC of all matching symtabs. */ |
| 2999 | |
| 3000 | static VEC (symtab_ptr) * |
| 3001 | collect_symtabs_from_filename (const char *file) |
| 3002 | { |
| 3003 | struct symtab_collector collector; |
| 3004 | struct cleanup *cleanups; |
| 3005 | struct program_space *pspace; |
| 3006 | |
| 3007 | collector.symtabs = NULL; |
| 3008 | collector.symtab_table = htab_create (1, htab_hash_pointer, htab_eq_pointer, |
| 3009 | NULL); |
| 3010 | cleanups = make_cleanup_htab_delete (collector.symtab_table); |
| 3011 | |
| 3012 | /* Find that file's data. */ |
| 3013 | ALL_PSPACES (pspace) |
| 3014 | { |
| 3015 | if (pspace->executing_startup) |
| 3016 | continue; |
| 3017 | |
| 3018 | set_current_program_space (pspace); |
| 3019 | iterate_over_symtabs (file, add_symtabs_to_list, &collector); |
| 3020 | } |
| 3021 | |
| 3022 | do_cleanups (cleanups); |
| 3023 | return collector.symtabs; |
| 3024 | } |
| 3025 | |
| 3026 | /* Return all the symtabs associated to the FILENAME. */ |
| 3027 | |
| 3028 | static VEC (symtab_ptr) * |
| 3029 | symtabs_from_filename (const char *filename) |
| 3030 | { |
| 3031 | VEC (symtab_ptr) *result; |
| 3032 | |
| 3033 | result = collect_symtabs_from_filename (filename); |
| 3034 | |
| 3035 | if (VEC_empty (symtab_ptr, result)) |
| 3036 | { |
| 3037 | if (!have_full_symbols () && !have_partial_symbols ()) |
| 3038 | throw_error (NOT_FOUND_ERROR, |
| 3039 | _("No symbol table is loaded. " |
| 3040 | "Use the \"file\" command.")); |
| 3041 | throw_error (NOT_FOUND_ERROR, _("No source file named %s."), filename); |
| 3042 | } |
| 3043 | |
| 3044 | return result; |
| 3045 | } |
| 3046 | |
| 3047 | /* Look up a function symbol named NAME in symtabs FILE_SYMTABS. Matching |
| 3048 | debug symbols are returned in SYMBOLS. Matching minimal symbols are |
| 3049 | returned in MINSYMS. */ |
| 3050 | |
| 3051 | static void |
| 3052 | find_function_symbols (struct linespec_state *state, |
| 3053 | VEC (symtab_ptr) *file_symtabs, const char *name, |
| 3054 | VEC (symbolp) **symbols, |
| 3055 | VEC (bound_minimal_symbol_d) **minsyms) |
| 3056 | { |
| 3057 | struct collect_info info; |
| 3058 | VEC (const_char_ptr) *symbol_names = NULL; |
| 3059 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (const_char_ptr), |
| 3060 | &symbol_names); |
| 3061 | |
| 3062 | info.state = state; |
| 3063 | info.result.symbols = NULL; |
| 3064 | info.result.minimal_symbols = NULL; |
| 3065 | info.file_symtabs = file_symtabs; |
| 3066 | |
| 3067 | /* Try NAME as an Objective-C selector. */ |
| 3068 | find_imps (name, &symbol_names); |
| 3069 | if (!VEC_empty (const_char_ptr, symbol_names)) |
| 3070 | add_all_symbol_names_from_pspace (&info, NULL, symbol_names); |
| 3071 | else |
| 3072 | add_matching_symbols_to_info (name, &info, NULL); |
| 3073 | |
| 3074 | do_cleanups (cleanup); |
| 3075 | |
| 3076 | if (VEC_empty (symbolp, info.result.symbols)) |
| 3077 | { |
| 3078 | VEC_free (symbolp, info.result.symbols); |
| 3079 | *symbols = NULL; |
| 3080 | } |
| 3081 | else |
| 3082 | *symbols = info.result.symbols; |
| 3083 | |
| 3084 | if (VEC_empty (bound_minimal_symbol_d, info.result.minimal_symbols)) |
| 3085 | { |
| 3086 | VEC_free (bound_minimal_symbol_d, info.result.minimal_symbols); |
| 3087 | *minsyms = NULL; |
| 3088 | } |
| 3089 | else |
| 3090 | *minsyms = info.result.minimal_symbols; |
| 3091 | } |
| 3092 | |
| 3093 | /* Find all symbols named NAME in FILE_SYMTABS, returning debug symbols |
| 3094 | in SYMBOLS and minimal symbols in MINSYMS. */ |
| 3095 | |
| 3096 | static void |
| 3097 | find_linespec_symbols (struct linespec_state *state, |
| 3098 | VEC (symtab_ptr) *file_symtabs, |
| 3099 | const char *name, |
| 3100 | VEC (symbolp) **symbols, |
| 3101 | VEC (bound_minimal_symbol_d) **minsyms) |
| 3102 | { |
| 3103 | struct cleanup *cleanup; |
| 3104 | char *canon; |
| 3105 | const char *lookup_name; |
| 3106 | volatile struct gdb_exception except; |
| 3107 | |
| 3108 | cleanup = demangle_for_lookup (name, state->language->la_language, |
| 3109 | &lookup_name); |
| 3110 | if (state->language->la_language == language_ada) |
| 3111 | { |
| 3112 | /* In Ada, the symbol lookups are performed using the encoded |
| 3113 | name rather than the demangled name. */ |
| 3114 | lookup_name = ada_name_for_lookup (name); |
| 3115 | make_cleanup (xfree, (void *) lookup_name); |
| 3116 | } |
| 3117 | |
| 3118 | canon = cp_canonicalize_string_no_typedefs (lookup_name); |
| 3119 | if (canon != NULL) |
| 3120 | { |
| 3121 | lookup_name = canon; |
| 3122 | make_cleanup (xfree, canon); |
| 3123 | } |
| 3124 | |
| 3125 | /* It's important to not call expand_symtabs_matching unnecessarily |
| 3126 | as it can really slow things down (by unnecessarily expanding |
| 3127 | potentially 1000s of symtabs, which when debugging some apps can |
| 3128 | cost 100s of seconds). Avoid this to some extent by *first* calling |
| 3129 | find_function_symbols, and only if that doesn't find anything |
| 3130 | *then* call find_method. This handles two important cases: |
| 3131 | 1) break (anonymous namespace)::foo |
| 3132 | 2) break class::method where method is in class (and not a baseclass) */ |
| 3133 | |
| 3134 | find_function_symbols (state, file_symtabs, lookup_name, |
| 3135 | symbols, minsyms); |
| 3136 | |
| 3137 | /* If we were unable to locate a symbol of the same name, try dividing |
| 3138 | the name into class and method names and searching the class and its |
| 3139 | baseclasses. */ |
| 3140 | if (VEC_empty (symbolp, *symbols) |
| 3141 | && VEC_empty (bound_minimal_symbol_d, *minsyms)) |
| 3142 | { |
| 3143 | char *klass, *method; |
| 3144 | const char *last, *p, *scope_op; |
| 3145 | VEC (symbolp) *classes; |
| 3146 | |
| 3147 | /* See if we can find a scope operator and break this symbol |
| 3148 | name into namespaces${SCOPE_OPERATOR}class_name and method_name. */ |
| 3149 | scope_op = "::"; |
| 3150 | p = find_toplevel_string (lookup_name, scope_op); |
| 3151 | if (p == NULL) |
| 3152 | { |
| 3153 | /* No C++ scope operator. Try Java. */ |
| 3154 | scope_op = "."; |
| 3155 | p = find_toplevel_string (lookup_name, scope_op); |
| 3156 | } |
| 3157 | |
| 3158 | last = NULL; |
| 3159 | while (p != NULL) |
| 3160 | { |
| 3161 | last = p; |
| 3162 | p = find_toplevel_string (p + strlen (scope_op), scope_op); |
| 3163 | } |
| 3164 | |
| 3165 | /* If no scope operator was found, there is nothing more we can do; |
| 3166 | we already attempted to lookup the entire name as a symbol |
| 3167 | and failed. */ |
| 3168 | if (last == NULL) |
| 3169 | { |
| 3170 | do_cleanups (cleanup); |
| 3171 | return; |
| 3172 | } |
| 3173 | |
| 3174 | /* LOOKUP_NAME points to the class name. |
| 3175 | LAST points to the method name. */ |
| 3176 | klass = xmalloc ((last - lookup_name + 1) * sizeof (char)); |
| 3177 | make_cleanup (xfree, klass); |
| 3178 | strncpy (klass, lookup_name, last - lookup_name); |
| 3179 | klass[last - lookup_name] = '\0'; |
| 3180 | |
| 3181 | /* Skip past the scope operator. */ |
| 3182 | last += strlen (scope_op); |
| 3183 | method = xmalloc ((strlen (last) + 1) * sizeof (char)); |
| 3184 | make_cleanup (xfree, method); |
| 3185 | strcpy (method, last); |
| 3186 | |
| 3187 | /* Find a list of classes named KLASS. */ |
| 3188 | classes = lookup_prefix_sym (state, file_symtabs, klass); |
| 3189 | make_cleanup (VEC_cleanup (symbolp), &classes); |
| 3190 | |
| 3191 | if (!VEC_empty (symbolp, classes)) |
| 3192 | { |
| 3193 | /* Now locate a list of suitable methods named METHOD. */ |
| 3194 | TRY_CATCH (except, RETURN_MASK_ERROR) |
| 3195 | { |
| 3196 | find_method (state, file_symtabs, klass, method, classes, |
| 3197 | symbols, minsyms); |
| 3198 | } |
| 3199 | |
| 3200 | /* If successful, we're done. If NOT_FOUND_ERROR |
| 3201 | was not thrown, rethrow the exception that we did get. */ |
| 3202 | if (except.reason < 0 && except.error != NOT_FOUND_ERROR) |
| 3203 | throw_exception (except); |
| 3204 | } |
| 3205 | } |
| 3206 | |
| 3207 | do_cleanups (cleanup); |
| 3208 | } |
| 3209 | |
| 3210 | /* Return all labels named NAME in FUNCTION_SYMBOLS. Return the |
| 3211 | actual function symbol in which the label was found in LABEL_FUNC_RET. */ |
| 3212 | |
| 3213 | static VEC (symbolp) * |
| 3214 | find_label_symbols (struct linespec_state *self, |
| 3215 | VEC (symbolp) *function_symbols, |
| 3216 | VEC (symbolp) **label_funcs_ret, const char *name) |
| 3217 | { |
| 3218 | int ix; |
| 3219 | const struct block *block; |
| 3220 | struct symbol *sym; |
| 3221 | struct symbol *fn_sym; |
| 3222 | VEC (symbolp) *result = NULL; |
| 3223 | |
| 3224 | if (function_symbols == NULL) |
| 3225 | { |
| 3226 | set_current_program_space (self->program_space); |
| 3227 | block = get_current_search_block (); |
| 3228 | |
| 3229 | for (; |
| 3230 | block && !BLOCK_FUNCTION (block); |
| 3231 | block = BLOCK_SUPERBLOCK (block)) |
| 3232 | ; |
| 3233 | if (!block) |
| 3234 | return NULL; |
| 3235 | fn_sym = BLOCK_FUNCTION (block); |
| 3236 | |
| 3237 | sym = lookup_symbol (name, block, LABEL_DOMAIN, 0); |
| 3238 | |
| 3239 | if (sym != NULL) |
| 3240 | { |
| 3241 | VEC_safe_push (symbolp, result, sym); |
| 3242 | VEC_safe_push (symbolp, *label_funcs_ret, fn_sym); |
| 3243 | } |
| 3244 | } |
| 3245 | else |
| 3246 | { |
| 3247 | for (ix = 0; |
| 3248 | VEC_iterate (symbolp, function_symbols, ix, fn_sym); ++ix) |
| 3249 | { |
| 3250 | set_current_program_space (SYMTAB_PSPACE (symbol_symtab (fn_sym))); |
| 3251 | block = SYMBOL_BLOCK_VALUE (fn_sym); |
| 3252 | sym = lookup_symbol (name, block, LABEL_DOMAIN, 0); |
| 3253 | |
| 3254 | if (sym != NULL) |
| 3255 | { |
| 3256 | VEC_safe_push (symbolp, result, sym); |
| 3257 | VEC_safe_push (symbolp, *label_funcs_ret, fn_sym); |
| 3258 | } |
| 3259 | } |
| 3260 | } |
| 3261 | |
| 3262 | return result; |
| 3263 | } |
| 3264 | |
| 3265 | \f |
| 3266 | |
| 3267 | /* A helper for create_sals_line_offset that handles the 'list_mode' case. */ |
| 3268 | |
| 3269 | static void |
| 3270 | decode_digits_list_mode (struct linespec_state *self, |
| 3271 | linespec_p ls, |
| 3272 | struct symtabs_and_lines *values, |
| 3273 | struct symtab_and_line val) |
| 3274 | { |
| 3275 | int ix; |
| 3276 | struct symtab *elt; |
| 3277 | |
| 3278 | gdb_assert (self->list_mode); |
| 3279 | |
| 3280 | for (ix = 0; VEC_iterate (symtab_ptr, ls->file_symtabs, ix, elt); |
| 3281 | ++ix) |
| 3282 | { |
| 3283 | /* The logic above should ensure this. */ |
| 3284 | gdb_assert (elt != NULL); |
| 3285 | |
| 3286 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 3287 | |
| 3288 | /* Simplistic search just for the list command. */ |
| 3289 | val.symtab = find_line_symtab (elt, val.line, NULL, NULL); |
| 3290 | if (val.symtab == NULL) |
| 3291 | val.symtab = elt; |
| 3292 | val.pspace = SYMTAB_PSPACE (elt); |
| 3293 | val.pc = 0; |
| 3294 | val.explicit_line = 1; |
| 3295 | |
| 3296 | add_sal_to_sals (self, values, &val, NULL, 0); |
| 3297 | } |
| 3298 | } |
| 3299 | |
| 3300 | /* A helper for create_sals_line_offset that iterates over the symtabs, |
| 3301 | adding lines to the VEC. */ |
| 3302 | |
| 3303 | static void |
| 3304 | decode_digits_ordinary (struct linespec_state *self, |
| 3305 | linespec_p ls, |
| 3306 | int line, |
| 3307 | struct symtabs_and_lines *sals, |
| 3308 | struct linetable_entry **best_entry) |
| 3309 | { |
| 3310 | int ix; |
| 3311 | struct symtab *elt; |
| 3312 | |
| 3313 | for (ix = 0; VEC_iterate (symtab_ptr, ls->file_symtabs, ix, elt); ++ix) |
| 3314 | { |
| 3315 | int i; |
| 3316 | VEC (CORE_ADDR) *pcs; |
| 3317 | CORE_ADDR pc; |
| 3318 | |
| 3319 | /* The logic above should ensure this. */ |
| 3320 | gdb_assert (elt != NULL); |
| 3321 | |
| 3322 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 3323 | |
| 3324 | pcs = find_pcs_for_symtab_line (elt, line, best_entry); |
| 3325 | for (i = 0; VEC_iterate (CORE_ADDR, pcs, i, pc); ++i) |
| 3326 | { |
| 3327 | struct symtab_and_line sal; |
| 3328 | |
| 3329 | init_sal (&sal); |
| 3330 | sal.pspace = SYMTAB_PSPACE (elt); |
| 3331 | sal.symtab = elt; |
| 3332 | sal.line = line; |
| 3333 | sal.pc = pc; |
| 3334 | add_sal_to_sals_basic (sals, &sal); |
| 3335 | } |
| 3336 | |
| 3337 | VEC_free (CORE_ADDR, pcs); |
| 3338 | } |
| 3339 | } |
| 3340 | |
| 3341 | \f |
| 3342 | |
| 3343 | /* Return the line offset represented by VARIABLE. */ |
| 3344 | |
| 3345 | static struct line_offset |
| 3346 | linespec_parse_variable (struct linespec_state *self, const char *variable) |
| 3347 | { |
| 3348 | int index = 0; |
| 3349 | const char *p; |
| 3350 | struct line_offset offset = {0, LINE_OFFSET_NONE}; |
| 3351 | |
| 3352 | p = (variable[1] == '$') ? variable + 2 : variable + 1; |
| 3353 | if (*p == '$') |
| 3354 | ++p; |
| 3355 | while (*p >= '0' && *p <= '9') |
| 3356 | ++p; |
| 3357 | if (!*p) /* Reached end of token without hitting non-digit. */ |
| 3358 | { |
| 3359 | /* We have a value history reference. */ |
| 3360 | struct value *val_history; |
| 3361 | |
| 3362 | sscanf ((variable[1] == '$') ? variable + 2 : variable + 1, "%d", &index); |
| 3363 | val_history |
| 3364 | = access_value_history ((variable[1] == '$') ? -index : index); |
| 3365 | if (TYPE_CODE (value_type (val_history)) != TYPE_CODE_INT) |
| 3366 | error (_("History values used in line " |
| 3367 | "specs must have integer values.")); |
| 3368 | offset.offset = value_as_long (val_history); |
| 3369 | } |
| 3370 | else |
| 3371 | { |
| 3372 | /* Not all digits -- may be user variable/function or a |
| 3373 | convenience variable. */ |
| 3374 | LONGEST valx; |
| 3375 | struct internalvar *ivar; |
| 3376 | |
| 3377 | /* Try it as a convenience variable. If it is not a convenience |
| 3378 | variable, return and allow normal symbol lookup to occur. */ |
| 3379 | ivar = lookup_only_internalvar (variable + 1); |
| 3380 | if (ivar == NULL) |
| 3381 | /* No internal variable with that name. Mark the offset |
| 3382 | as unknown to allow the name to be looked up as a symbol. */ |
| 3383 | offset.sign = LINE_OFFSET_UNKNOWN; |
| 3384 | else |
| 3385 | { |
| 3386 | /* We found a valid variable name. If it is not an integer, |
| 3387 | throw an error. */ |
| 3388 | if (!get_internalvar_integer (ivar, &valx)) |
| 3389 | error (_("Convenience variables used in line " |
| 3390 | "specs must have integer values.")); |
| 3391 | else |
| 3392 | offset.offset = valx; |
| 3393 | } |
| 3394 | } |
| 3395 | |
| 3396 | return offset; |
| 3397 | } |
| 3398 | \f |
| 3399 | |
| 3400 | /* A callback used to possibly add a symbol to the results. */ |
| 3401 | |
| 3402 | static int |
| 3403 | collect_symbols (struct symbol *sym, void *data) |
| 3404 | { |
| 3405 | struct collect_info *info = data; |
| 3406 | |
| 3407 | /* In list mode, add all matching symbols, regardless of class. |
| 3408 | This allows the user to type "list a_global_variable". */ |
| 3409 | if (SYMBOL_CLASS (sym) == LOC_BLOCK || info->state->list_mode) |
| 3410 | VEC_safe_push (symbolp, info->result.symbols, sym); |
| 3411 | return 1; /* Continue iterating. */ |
| 3412 | } |
| 3413 | |
| 3414 | /* We've found a minimal symbol MSYMBOL in OBJFILE to associate with our |
| 3415 | linespec; return the SAL in RESULT. */ |
| 3416 | |
| 3417 | static void |
| 3418 | minsym_found (struct linespec_state *self, struct objfile *objfile, |
| 3419 | struct minimal_symbol *msymbol, |
| 3420 | struct symtabs_and_lines *result) |
| 3421 | { |
| 3422 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
| 3423 | CORE_ADDR pc; |
| 3424 | struct symtab_and_line sal; |
| 3425 | |
| 3426 | sal = find_pc_sect_line (MSYMBOL_VALUE_ADDRESS (objfile, msymbol), |
| 3427 | (struct obj_section *) 0, 0); |
| 3428 | sal.section = MSYMBOL_OBJ_SECTION (objfile, msymbol); |
| 3429 | |
| 3430 | /* The minimal symbol might point to a function descriptor; |
| 3431 | resolve it to the actual code address instead. */ |
| 3432 | pc = gdbarch_convert_from_func_ptr_addr (gdbarch, sal.pc, ¤t_target); |
| 3433 | if (pc != sal.pc) |
| 3434 | sal = find_pc_sect_line (pc, NULL, 0); |
| 3435 | |
| 3436 | if (self->funfirstline) |
| 3437 | skip_prologue_sal (&sal); |
| 3438 | |
| 3439 | if (maybe_add_address (self->addr_set, objfile->pspace, sal.pc)) |
| 3440 | add_sal_to_sals (self, result, &sal, MSYMBOL_NATURAL_NAME (msymbol), 0); |
| 3441 | } |
| 3442 | |
| 3443 | /* A helper struct to pass some data through |
| 3444 | iterate_over_minimal_symbols. */ |
| 3445 | |
| 3446 | struct collect_minsyms |
| 3447 | { |
| 3448 | /* The objfile we're examining. */ |
| 3449 | struct objfile *objfile; |
| 3450 | |
| 3451 | /* Only search the given symtab, or NULL to search for all symbols. */ |
| 3452 | struct symtab *symtab; |
| 3453 | |
| 3454 | /* The funfirstline setting from the initial call. */ |
| 3455 | int funfirstline; |
| 3456 | |
| 3457 | /* The list_mode setting from the initial call. */ |
| 3458 | int list_mode; |
| 3459 | |
| 3460 | /* The resulting symbols. */ |
| 3461 | VEC (bound_minimal_symbol_d) *msyms; |
| 3462 | }; |
| 3463 | |
| 3464 | /* A helper function to classify a minimal_symbol_type according to |
| 3465 | priority. */ |
| 3466 | |
| 3467 | static int |
| 3468 | classify_mtype (enum minimal_symbol_type t) |
| 3469 | { |
| 3470 | switch (t) |
| 3471 | { |
| 3472 | case mst_file_text: |
| 3473 | case mst_file_data: |
| 3474 | case mst_file_bss: |
| 3475 | /* Intermediate priority. */ |
| 3476 | return 1; |
| 3477 | |
| 3478 | case mst_solib_trampoline: |
| 3479 | /* Lowest priority. */ |
| 3480 | return 2; |
| 3481 | |
| 3482 | default: |
| 3483 | /* Highest priority. */ |
| 3484 | return 0; |
| 3485 | } |
| 3486 | } |
| 3487 | |
| 3488 | /* Callback for qsort that sorts symbols by priority. */ |
| 3489 | |
| 3490 | static int |
| 3491 | compare_msyms (const void *a, const void *b) |
| 3492 | { |
| 3493 | const bound_minimal_symbol_d *moa = a; |
| 3494 | const bound_minimal_symbol_d *mob = b; |
| 3495 | enum minimal_symbol_type ta = MSYMBOL_TYPE (moa->minsym); |
| 3496 | enum minimal_symbol_type tb = MSYMBOL_TYPE (mob->minsym); |
| 3497 | |
| 3498 | return classify_mtype (ta) - classify_mtype (tb); |
| 3499 | } |
| 3500 | |
| 3501 | /* Callback for iterate_over_minimal_symbols that adds the symbol to |
| 3502 | the result. */ |
| 3503 | |
| 3504 | static void |
| 3505 | add_minsym (struct minimal_symbol *minsym, void *d) |
| 3506 | { |
| 3507 | struct collect_minsyms *info = d; |
| 3508 | bound_minimal_symbol_d mo; |
| 3509 | |
| 3510 | mo.minsym = minsym; |
| 3511 | mo.objfile = info->objfile; |
| 3512 | |
| 3513 | if (info->symtab != NULL) |
| 3514 | { |
| 3515 | CORE_ADDR pc; |
| 3516 | struct symtab_and_line sal; |
| 3517 | struct gdbarch *gdbarch = get_objfile_arch (info->objfile); |
| 3518 | |
| 3519 | sal = find_pc_sect_line (MSYMBOL_VALUE_ADDRESS (info->objfile, minsym), |
| 3520 | NULL, 0); |
| 3521 | sal.section = MSYMBOL_OBJ_SECTION (info->objfile, minsym); |
| 3522 | pc |
| 3523 | = gdbarch_convert_from_func_ptr_addr (gdbarch, sal.pc, ¤t_target); |
| 3524 | if (pc != sal.pc) |
| 3525 | sal = find_pc_sect_line (pc, NULL, 0); |
| 3526 | |
| 3527 | if (info->symtab != sal.symtab) |
| 3528 | return; |
| 3529 | } |
| 3530 | |
| 3531 | /* Exclude data symbols when looking for breakpoint locations. */ |
| 3532 | if (!info->list_mode) |
| 3533 | switch (minsym->type) |
| 3534 | { |
| 3535 | case mst_slot_got_plt: |
| 3536 | case mst_data: |
| 3537 | case mst_bss: |
| 3538 | case mst_abs: |
| 3539 | case mst_file_data: |
| 3540 | case mst_file_bss: |
| 3541 | { |
| 3542 | /* Make sure this minsym is not a function descriptor |
| 3543 | before we decide to discard it. */ |
| 3544 | struct gdbarch *gdbarch = get_objfile_arch (info->objfile); |
| 3545 | CORE_ADDR addr = gdbarch_convert_from_func_ptr_addr |
| 3546 | (gdbarch, BMSYMBOL_VALUE_ADDRESS (mo), |
| 3547 | ¤t_target); |
| 3548 | |
| 3549 | if (addr == BMSYMBOL_VALUE_ADDRESS (mo)) |
| 3550 | return; |
| 3551 | } |
| 3552 | } |
| 3553 | |
| 3554 | VEC_safe_push (bound_minimal_symbol_d, info->msyms, &mo); |
| 3555 | } |
| 3556 | |
| 3557 | /* Search for minimal symbols called NAME. If SEARCH_PSPACE |
| 3558 | is not NULL, the search is restricted to just that program |
| 3559 | space. |
| 3560 | |
| 3561 | If SYMTAB is NULL, search all objfiles, otherwise |
| 3562 | restrict results to the given SYMTAB. */ |
| 3563 | |
| 3564 | static void |
| 3565 | search_minsyms_for_name (struct collect_info *info, const char *name, |
| 3566 | struct program_space *search_pspace, |
| 3567 | struct symtab *symtab) |
| 3568 | { |
| 3569 | struct collect_minsyms local; |
| 3570 | struct cleanup *cleanup; |
| 3571 | |
| 3572 | memset (&local, 0, sizeof (local)); |
| 3573 | local.funfirstline = info->state->funfirstline; |
| 3574 | local.list_mode = info->state->list_mode; |
| 3575 | local.symtab = symtab; |
| 3576 | |
| 3577 | cleanup = make_cleanup (VEC_cleanup (bound_minimal_symbol_d), &local.msyms); |
| 3578 | |
| 3579 | if (symtab == NULL) |
| 3580 | { |
| 3581 | struct program_space *pspace; |
| 3582 | |
| 3583 | ALL_PSPACES (pspace) |
| 3584 | { |
| 3585 | struct objfile *objfile; |
| 3586 | |
| 3587 | if (search_pspace != NULL && search_pspace != pspace) |
| 3588 | continue; |
| 3589 | if (pspace->executing_startup) |
| 3590 | continue; |
| 3591 | |
| 3592 | set_current_program_space (pspace); |
| 3593 | |
| 3594 | ALL_OBJFILES (objfile) |
| 3595 | { |
| 3596 | local.objfile = objfile; |
| 3597 | iterate_over_minimal_symbols (objfile, name, add_minsym, &local); |
| 3598 | } |
| 3599 | } |
| 3600 | } |
| 3601 | else |
| 3602 | { |
| 3603 | if (search_pspace == NULL || SYMTAB_PSPACE (symtab) == search_pspace) |
| 3604 | { |
| 3605 | set_current_program_space (SYMTAB_PSPACE (symtab)); |
| 3606 | local.objfile = SYMTAB_OBJFILE(symtab); |
| 3607 | iterate_over_minimal_symbols (local.objfile, name, add_minsym, |
| 3608 | &local); |
| 3609 | } |
| 3610 | } |
| 3611 | |
| 3612 | if (!VEC_empty (bound_minimal_symbol_d, local.msyms)) |
| 3613 | { |
| 3614 | int classification; |
| 3615 | int ix; |
| 3616 | bound_minimal_symbol_d *item; |
| 3617 | |
| 3618 | qsort (VEC_address (bound_minimal_symbol_d, local.msyms), |
| 3619 | VEC_length (bound_minimal_symbol_d, local.msyms), |
| 3620 | sizeof (bound_minimal_symbol_d), |
| 3621 | compare_msyms); |
| 3622 | |
| 3623 | /* Now the minsyms are in classification order. So, we walk |
| 3624 | over them and process just the minsyms with the same |
| 3625 | classification as the very first minsym in the list. */ |
| 3626 | item = VEC_index (bound_minimal_symbol_d, local.msyms, 0); |
| 3627 | classification = classify_mtype (MSYMBOL_TYPE (item->minsym)); |
| 3628 | |
| 3629 | for (ix = 0; |
| 3630 | VEC_iterate (bound_minimal_symbol_d, local.msyms, ix, item); |
| 3631 | ++ix) |
| 3632 | { |
| 3633 | if (classify_mtype (MSYMBOL_TYPE (item->minsym)) != classification) |
| 3634 | break; |
| 3635 | |
| 3636 | VEC_safe_push (bound_minimal_symbol_d, |
| 3637 | info->result.minimal_symbols, item); |
| 3638 | } |
| 3639 | } |
| 3640 | |
| 3641 | do_cleanups (cleanup); |
| 3642 | } |
| 3643 | |
| 3644 | /* A helper function to add all symbols matching NAME to INFO. If |
| 3645 | PSPACE is not NULL, the search is restricted to just that program |
| 3646 | space. */ |
| 3647 | |
| 3648 | static void |
| 3649 | add_matching_symbols_to_info (const char *name, |
| 3650 | struct collect_info *info, |
| 3651 | struct program_space *pspace) |
| 3652 | { |
| 3653 | int ix; |
| 3654 | struct symtab *elt; |
| 3655 | |
| 3656 | for (ix = 0; VEC_iterate (symtab_ptr, info->file_symtabs, ix, elt); ++ix) |
| 3657 | { |
| 3658 | if (elt == NULL) |
| 3659 | { |
| 3660 | iterate_over_all_matching_symtabs (info->state, name, VAR_DOMAIN, |
| 3661 | collect_symbols, info, |
| 3662 | pspace, 1); |
| 3663 | search_minsyms_for_name (info, name, pspace, NULL); |
| 3664 | } |
| 3665 | else if (pspace == NULL || pspace == SYMTAB_PSPACE (elt)) |
| 3666 | { |
| 3667 | int prev_len = VEC_length (symbolp, info->result.symbols); |
| 3668 | |
| 3669 | /* Program spaces that are executing startup should have |
| 3670 | been filtered out earlier. */ |
| 3671 | gdb_assert (!SYMTAB_PSPACE (elt)->executing_startup); |
| 3672 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 3673 | iterate_over_file_blocks (elt, name, VAR_DOMAIN, |
| 3674 | collect_symbols, info); |
| 3675 | |
| 3676 | /* If no new symbols were found in this iteration and this symtab |
| 3677 | is in assembler, we might actually be looking for a label for |
| 3678 | which we don't have debug info. Check for a minimal symbol in |
| 3679 | this case. */ |
| 3680 | if (prev_len == VEC_length (symbolp, info->result.symbols) |
| 3681 | && elt->language == language_asm) |
| 3682 | search_minsyms_for_name (info, name, pspace, elt); |
| 3683 | } |
| 3684 | } |
| 3685 | } |
| 3686 | |
| 3687 | \f |
| 3688 | |
| 3689 | /* Now come some functions that are called from multiple places within |
| 3690 | decode_line_1. */ |
| 3691 | |
| 3692 | static int |
| 3693 | symbol_to_sal (struct symtab_and_line *result, |
| 3694 | int funfirstline, struct symbol *sym) |
| 3695 | { |
| 3696 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
| 3697 | { |
| 3698 | *result = find_function_start_sal (sym, funfirstline); |
| 3699 | return 1; |
| 3700 | } |
| 3701 | else |
| 3702 | { |
| 3703 | if (SYMBOL_CLASS (sym) == LOC_LABEL && SYMBOL_VALUE_ADDRESS (sym) != 0) |
| 3704 | { |
| 3705 | init_sal (result); |
| 3706 | result->symtab = symbol_symtab (sym); |
| 3707 | result->line = SYMBOL_LINE (sym); |
| 3708 | result->pc = SYMBOL_VALUE_ADDRESS (sym); |
| 3709 | result->pspace = SYMTAB_PSPACE (result->symtab); |
| 3710 | result->explicit_pc = 1; |
| 3711 | return 1; |
| 3712 | } |
| 3713 | else if (funfirstline) |
| 3714 | { |
| 3715 | /* Nothing. */ |
| 3716 | } |
| 3717 | else if (SYMBOL_LINE (sym) != 0) |
| 3718 | { |
| 3719 | /* We know its line number. */ |
| 3720 | init_sal (result); |
| 3721 | result->symtab = symbol_symtab (sym); |
| 3722 | result->line = SYMBOL_LINE (sym); |
| 3723 | result->pspace = SYMTAB_PSPACE (result->symtab); |
| 3724 | return 1; |
| 3725 | } |
| 3726 | } |
| 3727 | |
| 3728 | return 0; |
| 3729 | } |
| 3730 | |
| 3731 | /* See the comment in linespec.h. */ |
| 3732 | |
| 3733 | void |
| 3734 | init_linespec_result (struct linespec_result *lr) |
| 3735 | { |
| 3736 | memset (lr, 0, sizeof (*lr)); |
| 3737 | } |
| 3738 | |
| 3739 | /* See the comment in linespec.h. */ |
| 3740 | |
| 3741 | void |
| 3742 | destroy_linespec_result (struct linespec_result *ls) |
| 3743 | { |
| 3744 | int i; |
| 3745 | struct linespec_sals *lsal; |
| 3746 | |
| 3747 | xfree (ls->addr_string); |
| 3748 | for (i = 0; VEC_iterate (linespec_sals, ls->sals, i, lsal); ++i) |
| 3749 | { |
| 3750 | xfree (lsal->canonical); |
| 3751 | xfree (lsal->sals.sals); |
| 3752 | } |
| 3753 | VEC_free (linespec_sals, ls->sals); |
| 3754 | } |
| 3755 | |
| 3756 | /* Cleanup function for a linespec_result. */ |
| 3757 | |
| 3758 | static void |
| 3759 | cleanup_linespec_result (void *a) |
| 3760 | { |
| 3761 | destroy_linespec_result (a); |
| 3762 | } |
| 3763 | |
| 3764 | /* See the comment in linespec.h. */ |
| 3765 | |
| 3766 | struct cleanup * |
| 3767 | make_cleanup_destroy_linespec_result (struct linespec_result *ls) |
| 3768 | { |
| 3769 | return make_cleanup (cleanup_linespec_result, ls); |
| 3770 | } |